/mandos/release : revision 237.7.749

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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.Callable

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except AttributeError:

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class abc:

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Callable = collections.Callable

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collections.abc = abc

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del abc

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# Add shlex.quote if it does not exist

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try:

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shlex.quote

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except AttributeError:

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shlex.quote = re.escape

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# Show warnings by default

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if not sys.warnoptions:

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if sys.version_info < (3, 2):

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configparser.Configparser = configparser.SafeConfigParser

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version = "1.8.16"

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version = "1.8.9"

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stored_state_file = "clients.pickle"

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

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logger = logging.getLogger()

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

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syslogger = None

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facility=logging.handlers.SysLogHandler.LOG_DAEMON,

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address="/dev/log"))

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syslogger.setFormatter(logging.Formatter

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

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" %(message)s"))

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log.addHandler(syslogger)

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

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' %(message)s'))

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logger.addHandler(syslogger)

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if debug:

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console = logging.StreamHandler()

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

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" [%(process)d]:"

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" %(levelname)s:"

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" %(message)s"))

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log.addHandler(console)

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log.setLevel(level)

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

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' [%(process)d]:'

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' %(levelname)s:'

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' %(message)s'))

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logger.addHandler(console)

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logger.setLevel(level)

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class PGPError(Exception):

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except OSError as e:

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if e.errno != errno.ENOENT:

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raise

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self.gnupgargs = ["--batch",

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"--homedir", self.tempdir,

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"--force-mdc",

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"--quiet"]

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self.gnupgargs = ['--batch',

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'--homedir', self.tempdir,

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'--force-mdc',

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'--quiet']

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

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

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

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dir=self.tempdir) as passfile:

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passfile.write(passphrase)

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passfile.flush()

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

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"--passphrase-file",

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

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'--passphrase-file',

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passfile.name]

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+ self.gnupgargs,

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stdin=subprocess.PIPE,

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dir=self.tempdir) as passfile:

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passfile.write(passphrase)

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passfile.flush()

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

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"--passphrase-file",

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

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'--passphrase-file',

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passfile.name]

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+ self.gnupgargs,

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stdin=subprocess.PIPE,

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Attributes:

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

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Used to optionally bind to the specified interface.

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name: string; Example: "Mandos"

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

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name: string; Example: 'Mandos'

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

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

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port: integer; what port to announce

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TXT: list of strings; TXT record for the service

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def rename(self, remove=True):

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

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if self.rename_count >= self.max_renames:

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

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" after %i retries, exiting.",

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self.rename_count)

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

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" after %i retries, exiting.",

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self.rename_count)

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raise AvahiServiceError("Too many renames")

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self.name = str(

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self.server.GetAlternativeServiceName(self.name))

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self.rename_count += 1

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

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self.name)

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

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self.name)

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if remove:

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self.remove()

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try:

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except dbus.exceptions.DBusException as error:

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if (error.get_dbus_name()

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

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

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

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return self.rename(remove=False)

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else:

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

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

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self.cleanup()

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os._exit(1)

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403

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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)

486

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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510

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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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546

OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h

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# Types

565

class _session_int(ctypes.Structure):

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class session_int(ctypes.Structure):

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_fields_ = []

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session_t = ctypes.POINTER(_session_int)

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session_t = ctypes.POINTER(session_int)

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569

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class certificate_credentials_st(ctypes.Structure):

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_fields_ = []

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certificate_type_t = ctypes.c_int

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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)),

561

('size', ctypes.c_uint)]

578

562

579

class _openpgp_crt_int(ctypes.Structure):

563

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

593

577

# gnutls.strerror()

594

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self.code = code

595

579

if message is None and code is not None:

596

message = gnutls.strerror(code).decode(

597

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

580

message = gnutls.strerror(code)

598

581

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

599

582

message, *args)

600

583

601

584

class CertificateSecurityError(Error):

602

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pass

603

586

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

587

# Classes

630

class Credentials(With_from_param):

588

class Credentials:

631

589

def __init__(self):

632

self._as_parameter_ = gnutls.certificate_credentials_t()

633

gnutls.certificate_allocate_credentials(self)

590

self._c_object = gnutls.certificate_credentials_t()

591

gnutls.certificate_allocate_credentials(

592

ctypes.byref(self._c_object))

634

593

self.type = gnutls.CRD_CERTIFICATE

635

594

636

595

def __del__(self):

637

gnutls.certificate_free_credentials(self)

596

gnutls.certificate_free_credentials(self._c_object)

638

597

639

class ClientSession(With_from_param):

598

class ClientSession:

640

599

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

641

self._as_parameter_ = gnutls.session_t()

600

self._c_object = gnutls.session_t()

642

601

gnutls_flags = gnutls.CLIENT

643

602

if gnutls.check_version(b"3.5.6"):

644

603

gnutls_flags |= gnutls.NO_TICKETS

645

604

if gnutls.has_rawpk:

646

605

gnutls_flags |= gnutls.ENABLE_RAWPK

647

gnutls.init(self, gnutls_flags)

606

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

648

607

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)

608

gnutls.set_default_priority(self._c_object)

609

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

610

gnutls.handshake_set_private_extensions(self._c_object,

611

True)

652

612

self.socket = socket

653

613

if credentials is None:

654

614

credentials = gnutls.Credentials()

655

gnutls.credentials_set(self, credentials.type,

656

credentials)

615

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

616

ctypes.cast(credentials._c_object,

617

ctypes.c_void_p))

657

618

self.credentials = credentials

658

619

659

620

def __del__(self):

660

gnutls.deinit(self)

621

gnutls.deinit(self._c_object)

661

622

662

623

def handshake(self):

663

return gnutls.handshake(self)

624

return gnutls.handshake(self._c_object)

664

625

665

626

def send(self, data):

666

627

data = bytes(data)

667

628

data_len = len(data)

668

629

while data_len > 0:

669

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

630

data_len -= gnutls.record_send(self._c_object,

631

data[-data_len:],

670

632

data_len)

671

633

672

634

def bye(self):

673

return gnutls.bye(self, gnutls.SHUT_RDWR)

635

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

674

636

675

637

# Error handling functions

676

638

def _error_code(result):

677

639

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

678

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

679

if result >= gnutls.E_SUCCESS:

640

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

641

if result >= 0:

680

642

return result

681

643

if result == gnutls.E_NO_CERTIFICATE_FOUND:

682

644

raise gnutls.CertificateSecurityError(code=result)

683

645

raise gnutls.Error(code=result)

684

646

685

def _retry_on_error(result, func, arguments,

686

_error_code=_error_code):

647

def _retry_on_error(result, func, arguments):

687

648

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

688

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

689

while result < gnutls.E_SUCCESS:

649

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

650

while result < 0:

690

651

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

691

652

return _error_code(result)

692

653

result = func(*arguments)

697

658

698

659

# Functions

699

660

priority_set_direct = _library.gnutls_priority_set_direct

700

priority_set_direct.argtypes = [ClientSession, ctypes.c_char_p,

661

priority_set_direct.argtypes = [session_t, ctypes.c_char_p,

701

662

ctypes.POINTER(ctypes.c_char_p)]

702

663

priority_set_direct.restype = _error_code

703

664

704

665

init = _library.gnutls_init

705

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

666

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

706

667

init.restype = _error_code

707

668

708

669

set_default_priority = _library.gnutls_set_default_priority

709

set_default_priority.argtypes = [ClientSession]

670

set_default_priority.argtypes = [session_t]

710

671

set_default_priority.restype = _error_code

711

672

712

673

record_send = _library.gnutls_record_send

713

record_send.argtypes = [ClientSession, ctypes.c_void_p,

674

record_send.argtypes = [session_t, ctypes.c_void_p,

714

675

ctypes.c_size_t]

715

676

record_send.restype = ctypes.c_ssize_t

716

677

record_send.errcheck = _retry_on_error

718

679

certificate_allocate_credentials = (

719

680

_library.gnutls_certificate_allocate_credentials)

720

681

certificate_allocate_credentials.argtypes = [

721

PointerTo(Credentials)]

682

ctypes.POINTER(certificate_credentials_t)]

722

683

certificate_allocate_credentials.restype = _error_code

723

684

724

685

certificate_free_credentials = (

725

686

_library.gnutls_certificate_free_credentials)

726

certificate_free_credentials.argtypes = [Credentials]

687

certificate_free_credentials.argtypes = [

688

certificate_credentials_t]

727

689

certificate_free_credentials.restype = None

728

690

729

691

handshake_set_private_extensions = (

730

692

_library.gnutls_handshake_set_private_extensions)

731

handshake_set_private_extensions.argtypes = [ClientSession,

693

handshake_set_private_extensions.argtypes = [session_t,

732

694

ctypes.c_int]

733

695

handshake_set_private_extensions.restype = None

734

696

735

697

credentials_set = _library.gnutls_credentials_set

736

credentials_set.argtypes = [ClientSession, credentials_type_t,

737

CastToVoidPointer(Credentials)]

698

credentials_set.argtypes = [session_t, credentials_type_t,

699

ctypes.c_void_p]

738

700

credentials_set.restype = _error_code

739

701

740

702

strerror = _library.gnutls_strerror

742

704

strerror.restype = ctypes.c_char_p

743

705

744

706

certificate_type_get = _library.gnutls_certificate_type_get

745

certificate_type_get.argtypes = [ClientSession]

707

certificate_type_get.argtypes = [session_t]

746

708

certificate_type_get.restype = _error_code

747

709

748

710

certificate_get_peers = _library.gnutls_certificate_get_peers

749

certificate_get_peers.argtypes = [ClientSession,

711

certificate_get_peers.argtypes = [session_t,

750

712

ctypes.POINTER(ctypes.c_uint)]

751

713

certificate_get_peers.restype = ctypes.POINTER(datum_t)

752

714

759

721

global_set_log_function.restype = None

760

722

761

723

deinit = _library.gnutls_deinit

762

deinit.argtypes = [ClientSession]

724

deinit.argtypes = [session_t]

763

725

deinit.restype = None

764

726

765

727

handshake = _library.gnutls_handshake

766

handshake.argtypes = [ClientSession]

767

handshake.restype = ctypes.c_int

728

handshake.argtypes = [session_t]

729

handshake.restype = _error_code

768

730

handshake.errcheck = _retry_on_error

769

731

770

732

transport_set_ptr = _library.gnutls_transport_set_ptr

771

transport_set_ptr.argtypes = [ClientSession, transport_ptr_t]

733

transport_set_ptr.argtypes = [session_t, transport_ptr_t]

772

734

transport_set_ptr.restype = None

773

735

774

736

bye = _library.gnutls_bye

775

bye.argtypes = [ClientSession, close_request_t]

776

bye.restype = ctypes.c_int

737

bye.argtypes = [session_t, close_request_t]

738

bye.restype = _error_code

777

739

bye.errcheck = _retry_on_error

778

740

779

741

check_version = _library.gnutls_check_version

796

758

797

759

x509_crt_fmt_t = ctypes.c_int

798

760

799

# All the function declarations below are from

800

# gnutls/abstract.h

761

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

801

762

pubkey_init = _library.gnutls_pubkey_init

802

763

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

803

764

pubkey_init.restype = _error_code

817

778

pubkey_deinit.argtypes = [pubkey_t]

818

779

pubkey_deinit.restype = None

819

780

else:

820

# All the function declarations below are from

821

# gnutls/openpgp.h

781

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

822

782

823

783

openpgp_crt_init = _library.gnutls_openpgp_crt_init

824

784

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

830

790

openpgp_crt_fmt_t]

831

791

openpgp_crt_import.restype = _error_code

832

792

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

]

793

openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self

794

openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,

795

ctypes.POINTER(ctypes.c_uint)]

840

796

openpgp_crt_verify_self.restype = _error_code

841

797

842

798

openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit

853

809

854

810

if check_version(b"3.6.4"):

855

811

certificate_type_get2 = _library.gnutls_certificate_type_get2

856

certificate_type_get2.argtypes = [ClientSession, ctypes.c_int]

812

certificate_type_get2.argtypes = [session_t, ctypes.c_int]

857

813

certificate_type_get2.restype = _error_code

858

814

859

815

# Remove non-public functions

875

831

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

876

832

877

833

Attributes:

878

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

834

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

879

835

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

880

836

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

881

837

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

882

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

838

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

883

839

running.

884

840

checker_callback_tag: a GLib event source tag, or None

885

841

checker_command: string; External command which is run to check

961

917

# key_id() and fingerprint() functions

962

918

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

963

919

.replace(" ", ""))

964

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

965

"").upper()

920

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

966

921

.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

922

if "secret" in section:

973

923

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

974

924

.encode("utf-8"),

1015

965

self.last_enabled = None

1016

966

self.expires = None

1017

967

1018

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

1019

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

1020

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

968

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

969

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

970

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

1021

971

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

1022

972

datetime.datetime.utcnow())

1023

973

1051

1001

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

1052

1002

# Already enabled

1053

1003

return

1004

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

1054

1005

self.enabled = True

1055

1006

self.last_enabled = datetime.datetime.utcnow()

1056

1007

self.init_checker()

1061

1012

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

1062

1013

return False

1063

1014

if not quiet:

1064

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

1015

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

1065

1016

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

1066

1017

GLib.source_remove(self.disable_initiator_tag)

1067

1018

self.disable_initiator_tag = None

1079

1030

def __del__(self):

1080

1031

self.disable()

1081

1032

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.

1033

def init_checker(self):

1034

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

1035

# and every interval from then on.

1087

1036

if self.checker_initiator_tag is not None:

1088

1037

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

1038

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

1039

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

1040

+ 1)),

1041

self.start_checker)

1042

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

1106

1043

if self.disable_initiator_tag is not None:

1107

1044

GLib.source_remove(self.disable_initiator_tag)

1108

1045

self.disable_initiator_tag = GLib.timeout_add(

1109

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

1110

self.disable)

1046

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

1047

# Also start a new checker *right now*.

1048

self.start_checker()

1111

1049

1112

1050

def checker_callback(self, source, condition, connection,

1113

1051

command):

1124

1062

self.last_checker_status = returncode

1125

1063

self.last_checker_signal = None

1126

1064

if self.last_checker_status == 0:

1127

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

1065

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

1066

vars(self))

1128

1067

self.checked_ok()

1129

1068

else:

1130

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

1069

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

1131

1070

else:

1132

1071

self.last_checker_status = -1

1133

1072

self.last_checker_signal = -returncode

1134

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

1073

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

1074

vars(self))

1135

1075

return False

1136

1076

1137

1077

def checked_ok(self):

1156

1096

def need_approval(self):

1157

1097

self.last_approval_request = datetime.datetime.utcnow()

1158

1098

1159

def start_checker(self, start_was_randomized=False):

1099

def start_checker(self):

1160

1100

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

1161

1101

1162

1102

If a checker already exists, leave it running and do

1171

1111

# should be.

1172

1112

1173

1113

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

1174

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

1114

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

1175

1115

self.checker.join()

1176

1116

self.checker = None

1177

1117

# Start a new checker if needed

1178

1118

if self.checker is None:

1179

1119

# Escape attributes for the shell

1180

1120

escaped_attrs = {

1181

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

1121

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

1182

1122

for attr in self.runtime_expansions}

1183

1123

try:

1184

1124

command = self.checker_command % escaped_attrs

1185

1125

except TypeError as error:

1186

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

1187

self.checker_command, exc_info=error)

1126

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

1127

self.checker_command,

1128

exc_info=error)

1188

1129

return True # Try again later

1189

1130

self.current_checker_command = command

1190

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

1131

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

1132

self.name)

1191

1133

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

1192

1134

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

1193

1135

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

1212

1154

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

1213

1155

GLib.PRIORITY_DEFAULT, GLib.IO_IN,

1214

1156

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

1157

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

1227

1158

return True

1228

1159

1233

1164

self.checker_callback_tag = None

1234

1165

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

1235

1166

return

1236

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

1167

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

1237

1168

self.checker.terminate()

1238

1169

self.checker = None

1239

1170

1266

1197

func._dbus_name = func.__name__

1267

1198

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

1268

1199

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

1269

func._dbus_get_args_options = {"byte_arrays": byte_arrays}

1200

func._dbus_get_args_options = {'byte_arrays': byte_arrays}

1270

1201

return func

1271

1202

1272

1203

return decorator

1361

1292

1362

1293

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1363

1294

out_signature="s",

1364

path_keyword="object_path",

1365

connection_keyword="connection")

1295

path_keyword='object_path',

1296

connection_keyword='connection')

1366

1297

def Introspect(self, object_path, connection):

1367

1298

"""Overloading of standard D-Bus method.

1368

1299

1417

1348

document.unlink()

1418

1349

except (AttributeError, xml.dom.DOMException,

1419

1350

xml.parsers.expat.ExpatError) as error:

1420

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

1421

exc_info=error)

1351

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

1352

exc_info=error)

1422

1353

return xmlstring

1423

1354

1424

1355

1521

1452

1522

1453

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1523

1454

out_signature="s",

1524

path_keyword="object_path",

1525

connection_keyword="connection")

1455

path_keyword='object_path',

1456

connection_keyword='connection')

1526

1457

def Introspect(self, object_path, connection):

1527

1458

"""Overloading of standard D-Bus method.

1528

1459

1584

1515

document.unlink()

1585

1516

except (AttributeError, xml.dom.DOMException,

1586

1517

xml.parsers.expat.ExpatError) as error:

1587

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

1588

exc_info=error)

1518

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

1519

exc_info=error)

1589

1520

return xmlstring

1590

1521

1591

1522

1623

1554

1624

1555

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1625

1556

out_signature="s",

1626

path_keyword="object_path",

1627

connection_keyword="connection")

1557

path_keyword='object_path',

1558

connection_keyword='connection')

1628

1559

def Introspect(self, object_path, connection):

1629

1560

"""Overloading of standard D-Bus method.

1630

1561

1655

1586

document.unlink()

1656

1587

except (AttributeError, xml.dom.DOMException,

1657

1588

xml.parsers.expat.ExpatError) as error:

1658

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

1659

exc_info=error)

1589

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

1590

exc_info=error)

1660

1591

return xmlstring

1661

1592

1662

1593

2296

2227

class ProxyClient:

2297

2228

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

2298

2229

self._pipe = child_pipe

2299

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

2230

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

2300

2231

if not self._pipe.recv():

2301

2232

raise KeyError(key_id or fpr)

2302

2233

2303

2234

def __getattribute__(self, name):

2304

if name == "_pipe":

2235

if name == '_pipe':

2305

2236

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

2306

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

2237

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

2307

2238

data = self._pipe.recv()

2308

if data[0] == "data":

2239

if data[0] == 'data':

2309

2240

return data[1]

2310

if data[0] == "function":

2241

if data[0] == 'function':

2311

2242

2312

2243

def func(*args, **kwargs):

2313

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

2244

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

2314

2245

return self._pipe.recv()[1]

2315

2246

2316

2247

return func

2317

2248

2318

2249

def __setattr__(self, name, value):

2319

if name == "_pipe":

2250

if name == '_pipe':

2320

2251

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

2321

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

2252

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

2322

2253

2323

2254

2324

2255

class ClientHandler(socketserver.BaseRequestHandler, object):

2329

2260

2330

2261

def handle(self):

2331

2262

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())

2263

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

2264

str(self.client_address))

2265

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

2266

self.server.child_pipe.fileno())

2335

2267

2336

2268

session = gnutls.ClientSession(self.request)

2337

2269

2338

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

2270

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

2339

2271

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

2340

2272

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

2341

2273

# "+DHE-DSS"))

2343

2275

priority = self.server.gnutls_priority

2344

2276

if priority is None:

2345

2277

priority = "NORMAL"

2346

gnutls.priority_set_direct(session,

2347

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

2278

gnutls.priority_set_direct(session._c_object,

2279

priority.encode("utf-8"),

2280

None)

2348

2281

2349

2282

# Start communication using the Mandos protocol

2350

2283

# Get protocol number

2351

2284

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

2352

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

2285

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

2353

2286

try:

2354

2287

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

2355

2288

raise RuntimeError(line)

2356

2289

except (ValueError, IndexError, RuntimeError) as error:

2357

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

2290

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

2358

2291

return

2359

2292

2360

2293

# Start GnuTLS connection

2361

2294

try:

2362

2295

session.handshake()

2363

2296

except gnutls.Error as error:

2364

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

2297

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

2365

2298

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

2366

2299

# established. Just abandon the request.

2367

2300

return

2368

log.debug("Handshake succeeded")

2301

logger.debug("Handshake succeeded")

2369

2302

2370

2303

approval_required = False

2371

2304

try:

2375

2308

key_id = self.key_id(

2376

2309

self.peer_certificate(session))

2377

2310

except (TypeError, gnutls.Error) as error:

2378

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

2311

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

2379

2312

return

2380

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

2381

key_id.decode("utf-8",

2382

errors="replace"))

2313

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

2383

2314

2384

2315

else:

2385

2316

key_id = b""

2387

2318

fpr = self.fingerprint(

2388

2319

self.peer_certificate(session))

2389

2320

except (TypeError, gnutls.Error) as error:

2390

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

2321

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

2391

2322

return

2392

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

2323

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

2393

2324

2394

2325

try:

2395

2326

client = ProxyClient(child_pipe, key_id, fpr,

2404

2335

2405

2336

while True:

2406

2337

if not client.enabled:

2407

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

2338

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

2339

client.name)

2408

2340

if self.server.use_dbus:

2409

2341

# Emit D-Bus signal

2410

2342

client.Rejected("Disabled")

2414

2346

# We are approved or approval is disabled

2415

2347

break

2416

2348

elif client.approved is None:

2417

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

2418

client.name)

2349

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

2350

client.name)

2419

2351

if self.server.use_dbus:

2420

2352

# Emit D-Bus signal

2421

2353

client.NeedApproval(

2422

2354

client.approval_delay.total_seconds()

2423

2355

* 1000, client.approved_by_default)

2424

2356

else:

2425

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

2426

client.name)

2357

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

2358

client.name)

2427

2359

if self.server.use_dbus:

2428

2360

# Emit D-Bus signal

2429

2361

client.Rejected("Denied")

2437

2369

time2 = datetime.datetime.now()

2438

2370

if (time2 - time) >= delay:

2439

2371

if not client.approved_by_default:

2440

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

2441

" waiting for approval",

2442

client.name)

2372

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

2373

" waiting for approval",

2374

client.name)

2443

2375

if self.server.use_dbus:

2444

2376

# Emit D-Bus signal

2445

2377

client.Rejected("Approval timed out")

2452

2384

try:

2453

2385

session.send(client.secret)

2454

2386

except gnutls.Error as error:

2455

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

2387

logger.warning("gnutls send failed",

2388

exc_info=error)

2456

2389

return

2457

2390

2458

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

2391

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

2459

2392

# bump the timeout using extended_timeout

2460

2393

client.bump_timeout(client.extended_timeout)

2461

2394

if self.server.use_dbus:

2468

2401

try:

2469

2402

session.bye()

2470

2403

except gnutls.Error as error:

2471

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

2404

logger.warning("GnuTLS bye failed",

2405

exc_info=error)

2472

2406

2473

2407

@staticmethod

2474

2408

def peer_certificate(session):

2475

2409

"Return the peer's certificate as a bytestring"

2476

2410

try:

2477

cert_type = gnutls.certificate_type_get2(

2478

session, gnutls.CTYPE_PEERS)

2411

cert_type = gnutls.certificate_type_get2(session._c_object,

2412

gnutls.CTYPE_PEERS)

2479

2413

except AttributeError:

2480

cert_type = gnutls.certificate_type_get(session)

2414

cert_type = gnutls.certificate_type_get(session._c_object)

2481

2415

if gnutls.has_rawpk:

2482

2416

valid_cert_types = frozenset((gnutls.CRT_RAWPK,))

2483

2417

else:

2484

2418

valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))

2485

2419

# If not a valid certificate type...

2486

2420

if cert_type not in valid_cert_types:

2487

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

2488

valid_cert_types)

2421

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

2422

valid_cert_types)

2489

2423

# ...return invalid data

2490

2424

return b""

2491

2425

list_size = ctypes.c_uint(1)

2492

2426

cert_list = (gnutls.certificate_get_peers

2493

(session, ctypes.byref(list_size)))

2427

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

2494

2428

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

2495

2429

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

2496

2430

if list_size.value == 0:

2518

2452

buf = ctypes.create_string_buffer(32)

2519

2453

buf_len = ctypes.c_size_t(len(buf))

2520

2454

# 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))

2455

gnutls.pubkey_get_key_id(pubkey,

2456

gnutls.KEYID_USE_SHA256,

2457

ctypes.cast(ctypes.byref(buf),

2458

ctypes.POINTER(ctypes.c_ubyte)),

2459

ctypes.byref(buf_len))

2527

2460

# Deinit the certificate

2528

2461

gnutls.pubkey_deinit(pubkey)

2529

2462

2610

2543

2611

2544

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

2612

2545

socketserver.TCPServer):

2613

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

2546

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

2614

2547

2615

2548

Attributes:

2616

2549

enabled: Boolean; whether this server is activated yet

2667

2600

if SO_BINDTODEVICE is None:

2668

2601

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

2669

2602

# common enough.

2670

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

2603

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

2671

2604

SO_BINDTODEVICE = 25

2672

2605

try:

2673

2606

self.socket.setsockopt(

2675

2608

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

2676

2609

except socket.error as error:

2677

2610

if error.errno == errno.EPERM:

2678

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

2679

self.interface)

2611

logger.error("No permission to bind to"

2612

" interface %s", self.interface)

2680

2613

elif error.errno == errno.ENOPROTOOPT:

2681

log.error("SO_BINDTODEVICE not available; cannot"

2682

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

2614

logger.error("SO_BINDTODEVICE not available;"

2615

" cannot bind to interface %s",

2616

self.interface)

2683

2617

elif error.errno == errno.ENODEV:

2684

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

2685

" bind", self.interface)

2618

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

2619

" cannot bind", self.interface)

2686

2620

else:

2687

2621

raise

2688

2622

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

2767

2701

request = parent_pipe.recv()

2768

2702

command = request[0]

2769

2703

2770

if command == "init":

2704

if command == 'init':

2771

2705

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

2772

2706

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

2773

2707

address = request[3]

2774

2708

2775

2709

for c in self.clients.values():

2776

if key_id == ("E3B0C44298FC1C149AFBF4C8996FB924"

2777

"27AE41E4649B934CA495991B7852B855"):

2710

if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":

2778

2711

continue

2779

2712

if key_id and c.key_id == key_id:

2780

2713

client = c

2783

2716

client = c

2784

2717

break

2785

2718

else:

2786

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

2787

" %s", key_id or fpr, address)

2719

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

2720

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

2788

2721

if self.use_dbus:

2789

2722

# Emit D-Bus signal

2790

2723

mandos_dbus_service.ClientNotFound(key_id or fpr,

2803

2736

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

2804

2737

# same fileno

2805

2738

return False

2806

if command == "funcall":

2739

if command == 'funcall':

2807

2740

funcname = request[1]

2808

2741

args = request[2]

2809

2742

kwargs = request[3]

2810

2743

2811

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

2744

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

2812

2745

funcname)(*args,

2813

2746

**kwargs)))

2814

2747

2815

if command == "getattr":

2748

if command == 'getattr':

2816

2749

attrname = request[1]

2817

2750

if isinstance(client_object.__getattribute__(attrname),

2818

collections.abc.Callable):

2819

parent_pipe.send(("function", ))

2751

collections.Callable):

2752

parent_pipe.send(('function', ))

2820

2753

else:

2821

2754

parent_pipe.send((

2822

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

2755

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

2823

2756

2824

if command == "setattr":

2757

if command == 'setattr':

2825

2758

attrname = request[1]

2826

2759

value = request[2]

2827

2760

setattr(client_object, attrname, value)

2832

2765

def rfc3339_duration_to_delta(duration):

2833

2766

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

2834

2767

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

2768

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

2769

True

2770

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

2771

True

2772

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

2773

True

2774

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

2775

True

2776

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

2777

True

2778

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

2779

True

2780

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

2781

True

2851

2782

"""

2852

2783

2853

2784

# Parsing an RFC 3339 duration with regular expressions is not

2933

2864

def string_to_delta(interval):

2934

2865

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

2935

2866

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)

2867

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

2868

True

2869

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

2870

True

2871

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

2872

True

2873

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

2874

True

2875

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

2876

True

2877

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

2947

2878

True

2948

2879

"""

2949

2880

3153

3084

3154

3085

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

3155

3086

syslogger.setFormatter(

3156

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

3157

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

3087

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

3088

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

3158

3089

server_settings["servicename"])))

3159

3090

3160

3091

# Parse config file with clients

3184

3115

try:

3185

3116

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

3186

3117

except IOError as e:

3187

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

3188

exc_info=e)

3118

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

3119

exc_info=e)

3189

3120

3190

3121

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

3191

3122

("mandos", "mandos"),

3202

3133

try:

3203

3134

os.setgid(gid)

3204

3135

os.setuid(uid)

3205

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

3136

if debug:

3137

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

3138

gid))

3206

3139

except OSError as error:

3207

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

3208

os.strerror(error.errno))

3140

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

3141

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

3209

3142

if error.errno != errno.EPERM:

3210

3143

raise

3211

3144

3218

3151

3219

3152

@gnutls.log_func

3220

3153

def debug_gnutls(level, string):

3221

log.debug("GnuTLS: %s",

3222

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

3154

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

3223

3155

3224

3156

gnutls.global_set_log_function(debug_gnutls)

3225

3157

3254

3186

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

3255

3187

do_not_queue=True)

3256

3188

except dbus.exceptions.DBusException as e:

3257

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

3189

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

3258

3190

use_dbus = False

3259

3191

server_settings["use_dbus"] = False

3260

3192

tcp_server.use_dbus = False

3345

3277

os.remove(stored_state_path)

3346

3278

except IOError as e:

3347

3279

if e.errno == errno.ENOENT:

3348

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

3349

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

3280

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

3281

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

3350

3282

else:

3351

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

3352

exc_info=e)

3283

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

3284

exc_info=e)

3353

3285

raise

3354

3286

except EOFError as e:

3355

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

3356

exc_info=e)

3287

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

3288

"EOFError:",

3289

exc_info=e)

3357

3290

3358

3291

with PGPEngine() as pgp:

3359

3292

for client_name, client in clients_data.items():

3386

3319

if client["enabled"]:

3387

3320

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

3388

3321

if not client["last_checked_ok"]:

3389

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

3390

" never performed a successful"

3391

" checker", client_name)

3322

logger.warning(

3323

"disabling client {} - Client never "

3324

"performed a successful checker".format(

3325

client_name))

3392

3326

client["enabled"] = False

3393

3327

elif client["last_checker_status"] != 0:

3394

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

3395

" last checker failed with error"

3396

" code %s", client_name,

3397

client["last_checker_status"])

3328

logger.warning(

3329

"disabling client {} - Client last"

3330

" checker failed with error code"

3331

" {}".format(

3332

client_name,

3333

client["last_checker_status"]))

3398

3334

client["enabled"] = False

3399

3335

else:

3400

3336

client["expires"] = (

3401

3337

datetime.datetime.utcnow()

3402

3338

+ client["timeout"])

3403

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

3404

" enabled", client_name)

3339

logger.debug("Last checker succeeded,"

3340

" keeping {} enabled".format(

3341

client_name))

3405

3342

try:

3406

3343

client["secret"] = pgp.decrypt(

3407

3344

client["encrypted_secret"],

3408

3345

client_settings[client_name]["secret"])

3409

3346

except PGPError:

3410

3347

# If decryption fails, we use secret from new settings

3411

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

3412

client_name)

3348

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

3349

client_name))

3413

3350

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

3414

3351

["secret"])

3415

3352

3429

3366

server_settings=server_settings)

3430

3367

3431

3368

if not tcp_server.clients:

3432

log.warning("No clients defined")

3369

logger.warning("No clients defined")

3433

3370

3434

3371

if not foreground:

3435

3372

if pidfile is not None:

3438

3375

with pidfile:

3439

3376

print(pid, file=pidfile)

3440

3377

except IOError:

3441

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

3442

pidfilename, pid)

3378

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

3379

pidfilename, pid)

3443

3380

del pidfile

3444

3381

del pidfilename

3445

3382

3595

3532

3596

3533

try:

3597

3534

with tempfile.NamedTemporaryFile(

3598

mode="wb",

3535

mode='wb',

3599

3536

suffix=".pickle",

3600

prefix="clients-",

3537

prefix='clients-',

3601

3538

dir=os.path.dirname(stored_state_path),

3602

3539

delete=False) as stored_state:

3603

3540

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

3611

3548

except NameError:

3612

3549

pass

3613

3550

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

3614

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

3615

os.strerror(e.errno))

3551

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

3552

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

3616

3553

else:

3617

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

3618

exc_info=e)

3554

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

3555

exc_info=e)

3619

3556

raise

3620

3557

3621

3558

# Delete all clients, and settings from config

3638

3575

mandos_dbus_service.client_added_signal(client)

3639

3576

# Need to initiate checking of clients

3640

3577

if client.enabled:

3641

client.init_checker(randomize_start=True)

3578

client.init_checker()

3642

3579

3643

3580

tcp_server.enable()

3644

3581

tcp_server.server_activate()

3647

3584

if zeroconf:

3648

3585

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

3649

3586

if use_ipv6:

3650

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

3651

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

3587

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

3588

" flowinfo %d, scope_id %d",

3589

*tcp_server.socket.getsockname())

3652

3590

else: # IPv4

3653

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

3654

*tcp_server.socket.getsockname())

3591

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

3592

*tcp_server.socket.getsockname())

3655

3593

3656

3594

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

3657

3595

3661

3599

try:

3662

3600

service.activate()

3663

3601

except dbus.exceptions.DBusException as error:

3664

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

3602

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

3665

3603

cleanup()

3666

3604

sys.exit(1)

3667

3605

# End of Avahi example code

3672

3610

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

3673

3611

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

3674

3612

3675

log.debug("Starting main loop")

3613

logger.debug("Starting main loop")

3676

3614

main_loop.run()

3677

3615

except AvahiError as error:

3678

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

3616

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

3679

3617

cleanup()

3680

3618

sys.exit(1)

3681

3619

except KeyboardInterrupt:

3682

3620

if debug:

3683

3621

print("", file=sys.stderr)

3684

log.debug("Server received KeyboardInterrupt")

3685

log.debug("Server exiting")

3622

logger.debug("Server received KeyboardInterrupt")

3623

logger.debug("Server exiting")

3686

3624

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

3687

3625

cleanup()

3688

3626

3689

3627

3690

def parse_test_args():

3691

# type: () -> argparse.Namespace

3628

def should_only_run_tests():

3692

3629

parser = argparse.ArgumentParser(add_help=False)

3693

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

3694

parser.add_argument("--prefix", )

3630

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

3695

3631

args, unknown_args = parser.parse_known_args()

3696

if args.check:

3697

# Remove test options from sys.argv

3632

run_tests = args.check

3633

if run_tests:

3634

# Remove --check argument from sys.argv

3698

3635

sys.argv[1:] = unknown_args

3699

return args

3636

return run_tests

3700

3637

3701

3638

# Add all tests from doctest strings

3702

3639

def load_tests(loader, tests, none):

3704

3641

tests.addTests(doctest.DocTestSuite())

3705

3642

return tests

3706

3643

3707

if __name__ == "__main__":

3708

options = parse_test_args()

3644

if __name__ == '__main__':

3709

3645

try:

3710

if options.check:

3711

extra_test_prefix = options.prefix

3712

if extra_test_prefix is not None:

3713

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

3714

.result.wasSuccessful()):

3715

sys.exit(1)

3716

class ExtraTestLoader(unittest.TestLoader):

3717

testMethodPrefix = extra_test_prefix

3718

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

3719

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

3720

else:

3721

unittest.main(argv=[""])

3646

if should_only_run_tests():

3647

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

3648

unittest.main()

3722

3649

else:

3723

3650

main()

3724

3651

finally:

3725

3652

logging.shutdown()

3726

3727

# Local Variables:

3728

# run-tests:

3729

# (lambda (&optional extra)

3730

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

3731

# extra))

3732

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

3733

# (funcall remove-test-window)

3734

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

3735

# run-tests-in-test-buffer:

3736

# (lambda (dir &optional extra)

3737

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

3738

# (setq buffer-read-only nil

3739

# default-directory dir)

3740

# (erase-buffer)

3741

# (compilation-mode))

3742

# (let ((process-result

3743

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

3744

# (process-file-shell-command

3745

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

3746

# (and (numberp process-result)

3747

# (= process-result 0))))

3748

# get-command-line:

3749

# (lambda (&optional extra)

3750

# (let ((quoted-script

3751

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

3752

# (format

3753

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

3754

# quoted-script)))

3755

# get-script-name:

3756

# (lambda ()

3757

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

3758

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

3759

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

3760

# (buffer-file-name))))

3761

# remove-test-window:

3762

# (lambda ()

3763

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

3764

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

3765

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

3766

# (lambda ()

3767

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

3768

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

3769

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

3770

# (display-buffer-overriding-action

3771

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

3772

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

3773

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

3774

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

3775

# eval:

3776

# (progn

3777

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

3778

# (funcall run-tests t)))

3779

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

3780

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

3781

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

3782

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

3783

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

3784

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

3785

# End: