/mandos/trunk : revision 1194

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#!/usr/bin/python3 -bI

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

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

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#

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

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#

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

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#

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# Everything else is

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#

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# This file is part of Mandos.

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#

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#

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

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#

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from __future__ import (division, absolute_import, print_function,

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unicode_literals)

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except ImportError:

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pass

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import sys

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import unittest

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import argparse

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import logging

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import os

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try:

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import SocketServer as socketserver

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except ImportError:

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import socketserver

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import socket

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import argparse

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import datetime

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import errno

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try:

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import ConfigParser as configparser

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except ImportError:

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import configparser

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import sys

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import re

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import os

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import signal

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import subprocess

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import atexit

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import stat

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import logging

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import logging.handlers

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import pwd

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import contextlib

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import itertools

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import collections

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import codecs

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import random

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import shlex

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import unittest

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import dbus

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import dbus.service

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if sys.version_info.major == 2:

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__metaclass__ = type

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str = unicode

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input = raw_input

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

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try:

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collections.abc.Callable

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except AttributeError:

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class abc:

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Callable = collections.Callable

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collections.abc = abc

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del abc

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# Add shlex.quote if it does not exist

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try:

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shlex.quote

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except AttributeError:

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shlex.quote = re.escape

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# Show warnings by default

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if not sys.warnoptions:

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if sys.version_info < (3, 2):

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configparser.Configparser = configparser.SafeConfigParser

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version = "1.8.16"

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version = "1.8.9"

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stored_state_file = "clients.pickle"

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

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logger = logging.getLogger()

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

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syslogger = None

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facility=logging.handlers.SysLogHandler.LOG_DAEMON,

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address="/dev/log"))

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syslogger.setFormatter(logging.Formatter

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

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" %(message)s"))

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log.addHandler(syslogger)

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

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' %(message)s'))

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logger.addHandler(syslogger)

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if debug:

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console = logging.StreamHandler()

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

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" [%(process)d]:"

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" %(levelname)s:"

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" %(message)s"))

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log.addHandler(console)

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log.setLevel(level)

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

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' [%(process)d]:'

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' %(levelname)s:'

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' %(message)s'))

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logger.addHandler(console)

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logger.setLevel(level)

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class PGPError(Exception):

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except OSError as e:

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if e.errno != errno.ENOENT:

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raise

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self.gnupgargs = ["--batch",

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"--homedir", self.tempdir,

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"--force-mdc",

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"--quiet"]

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self.gnupgargs = ['--batch',

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'--homedir', self.tempdir,

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'--force-mdc',

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'--quiet']

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

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

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

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dir=self.tempdir) as passfile:

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passfile.write(passphrase)

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passfile.flush()

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

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"--passphrase-file",

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

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'--passphrase-file',

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passfile.name]

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+ self.gnupgargs,

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stdin=subprocess.PIPE,

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dir=self.tempdir) as passfile:

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passfile.write(passphrase)

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passfile.flush()

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

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"--passphrase-file",

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

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'--passphrase-file',

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passfile.name]

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+ self.gnupgargs,

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stdin=subprocess.PIPE,

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Attributes:

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

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Used to optionally bind to the specified interface.

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name: string; Example: "Mandos"

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

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name: string; Example: 'Mandos'

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

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

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port: integer; what port to announce

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TXT: list of strings; TXT record for the service

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def rename(self, remove=True):

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

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if self.rename_count >= self.max_renames:

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

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" after %i retries, exiting.",

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self.rename_count)

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

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" after %i retries, exiting.",

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self.rename_count)

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raise AvahiServiceError("Too many renames")

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self.name = str(

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self.server.GetAlternativeServiceName(self.name))

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self.rename_count += 1

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

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self.name)

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

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self.name)

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if remove:

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self.remove()

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try:

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except dbus.exceptions.DBusException as error:

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if (error.get_dbus_name()

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

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

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

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return self.rename(remove=False)

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else:

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

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

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self.cleanup()

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os._exit(1)

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avahi.DBUS_INTERFACE_ENTRY_GROUP)

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self.entry_group_state_changed_match = (

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self.group.connect_to_signal(

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"StateChanged", self.entry_group_state_changed))

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

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self.name, self.type)

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'StateChanged', self.entry_group_state_changed))

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

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self.name, self.type)

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self.group.AddService(

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self.interface,

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self.protocol,

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def entry_group_state_changed(self, state, error):

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

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

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

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if state == avahi.ENTRY_GROUP_ESTABLISHED:

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log.debug("Zeroconf service established.")

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logger.debug("Zeroconf service established.")

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elif state == avahi.ENTRY_GROUP_COLLISION:

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

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

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self.rename()

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elif state == avahi.ENTRY_GROUP_FAILURE:

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

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str(error))

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

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str(error))

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

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def cleanup(self):

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

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

478

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

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

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bad_states = {

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avahi.SERVER_INVALID: "Zeroconf server invalid",

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avahi.SERVER_REGISTERING: None,

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if state in bad_states:

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if bad_states[state] is not None:

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if error is None:

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log.error(bad_states[state])

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logger.error(bad_states[state])

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else:

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

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

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self.cleanup()

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elif state == avahi.SERVER_RUNNING:

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try:

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except dbus.exceptions.DBusException as error:

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if (error.get_dbus_name()

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

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

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logger.info("Local Zeroconf service name"

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" collision.")

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return self.rename(remove=False)

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else:

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

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

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self.cleanup()

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os._exit(1)

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else:

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if error is None:

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

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

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else:

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

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

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def activate(self):

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

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class AvahiServiceToSyslog(AvahiService):

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

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

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

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**kwargs)

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

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syslogger.setFormatter(logging.Formatter(

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

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

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.format(self.name)))

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return ret

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OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h

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# Types

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class _session_int(ctypes.Structure):

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class session_int(ctypes.Structure):

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_fields_ = []

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session_t = ctypes.POINTER(_session_int)

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session_t = ctypes.POINTER(session_int)

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569

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class certificate_credentials_st(ctypes.Structure):

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_fields_ = []

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certificate_type_t = ctypes.c_int

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class datum_t(ctypes.Structure):

576

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

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("size", ctypes.c_uint)]

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

560

('size', ctypes.c_uint)]

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561

579

class _openpgp_crt_int(ctypes.Structure):

562

class openpgp_crt_int(ctypes.Structure):

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_fields_ = []

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openpgp_crt_t = ctypes.POINTER(_openpgp_crt_int)

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openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)

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openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h

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

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credentials_type_t = ctypes.c_int

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# gnutls.strerror()

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self.code = code

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if message is None and code is not None:

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message = gnutls.strerror(code).decode(

597

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

579

message = gnutls.strerror(code)

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

599

581

message, *args)

600

582

601

583

class CertificateSecurityError(Error):

602

584

pass

603

585

604

class PointerTo:

605

def __init__(self, cls):

606

self.cls = cls

607

608

def from_param(self, obj):

609

if not isinstance(obj, self.cls):

610

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

611

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

612

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

613

614

class CastToVoidPointer:

615

def __init__(self, cls):

616

self.cls = cls

617

618

def from_param(self, obj):

619

if not isinstance(obj, self.cls):

620

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

621

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

622

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

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624

class With_from_param:

625

@classmethod

626

def from_param(cls, obj):

627

return obj._as_parameter_

628

629

586

# Classes

630

class Credentials(With_from_param):

587

class Credentials:

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588

def __init__(self):

632

self._as_parameter_ = gnutls.certificate_credentials_t()

633

gnutls.certificate_allocate_credentials(self)

589

self._c_object = gnutls.certificate_credentials_t()

590

gnutls.certificate_allocate_credentials(

591

ctypes.byref(self._c_object))

634

592

self.type = gnutls.CRD_CERTIFICATE

635

593

636

594

def __del__(self):

637

gnutls.certificate_free_credentials(self)

595

gnutls.certificate_free_credentials(self._c_object)

638

596

639

class ClientSession(With_from_param):

597

class ClientSession:

640

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

641

self._as_parameter_ = gnutls.session_t()

599

self._c_object = gnutls.session_t()

642

600

gnutls_flags = gnutls.CLIENT

643

601

if gnutls.check_version(b"3.5.6"):

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602

gnutls_flags |= gnutls.NO_TICKETS

645

603

if gnutls.has_rawpk:

646

604

gnutls_flags |= gnutls.ENABLE_RAWPK

647

gnutls.init(self, gnutls_flags)

605

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

648

606

del gnutls_flags

649

gnutls.set_default_priority(self)

650

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

651

gnutls.handshake_set_private_extensions(self, True)

607

gnutls.set_default_priority(self._c_object)

608

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

609

gnutls.handshake_set_private_extensions(self._c_object,

610

True)

652

611

self.socket = socket

653

612

if credentials is None:

654

613

credentials = gnutls.Credentials()

655

gnutls.credentials_set(self, credentials.type,

656

credentials)

614

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

615

ctypes.cast(credentials._c_object,

616

ctypes.c_void_p))

657

617

self.credentials = credentials

658

618

659

619

def __del__(self):

660

gnutls.deinit(self)

620

gnutls.deinit(self._c_object)

661

621

662

622

def handshake(self):

663

return gnutls.handshake(self)

623

return gnutls.handshake(self._c_object)

664

624

665

625

def send(self, data):

666

626

data = bytes(data)

667

627

data_len = len(data)

668

628

while data_len > 0:

669

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

629

data_len -= gnutls.record_send(self._c_object,

630

data[-data_len:],

670

631

data_len)

671

632

672

633

def bye(self):

673

return gnutls.bye(self, gnutls.SHUT_RDWR)

634

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

674

635

675

636

# Error handling functions

676

637

def _error_code(result):

677

638

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

678

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

679

if result >= gnutls.E_SUCCESS:

639

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

640

if result >= 0:

680

641

return result

681

642

if result == gnutls.E_NO_CERTIFICATE_FOUND:

682

643

raise gnutls.CertificateSecurityError(code=result)

683

644

raise gnutls.Error(code=result)

684

645

685

def _retry_on_error(result, func, arguments,

686

_error_code=_error_code):

646

def _retry_on_error(result, func, arguments):

687

647

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

688

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

689

while result < gnutls.E_SUCCESS:

648

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

649

while result < 0:

690

650

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

691

651

return _error_code(result)

692

652

result = func(*arguments)

697

657

698

658

# Functions

699

659

priority_set_direct = _library.gnutls_priority_set_direct

700

priority_set_direct.argtypes = [ClientSession, ctypes.c_char_p,

660

priority_set_direct.argtypes = [session_t, ctypes.c_char_p,

701

661

ctypes.POINTER(ctypes.c_char_p)]

702

662

priority_set_direct.restype = _error_code

703

663

704

664

init = _library.gnutls_init

705

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

665

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

706

666

init.restype = _error_code

707

667

708

668

set_default_priority = _library.gnutls_set_default_priority

709

set_default_priority.argtypes = [ClientSession]

669

set_default_priority.argtypes = [session_t]

710

670

set_default_priority.restype = _error_code

711

671

712

672

record_send = _library.gnutls_record_send

713

record_send.argtypes = [ClientSession, ctypes.c_void_p,

673

record_send.argtypes = [session_t, ctypes.c_void_p,

714

674

ctypes.c_size_t]

715

675

record_send.restype = ctypes.c_ssize_t

716

676

record_send.errcheck = _retry_on_error

718

678

certificate_allocate_credentials = (

719

679

_library.gnutls_certificate_allocate_credentials)

720

680

certificate_allocate_credentials.argtypes = [

721

PointerTo(Credentials)]

681

ctypes.POINTER(certificate_credentials_t)]

722

682

certificate_allocate_credentials.restype = _error_code

723

683

724

684

certificate_free_credentials = (

725

685

_library.gnutls_certificate_free_credentials)

726

certificate_free_credentials.argtypes = [Credentials]

686

certificate_free_credentials.argtypes = [

687

certificate_credentials_t]

727

688

certificate_free_credentials.restype = None

728

689

729

690

handshake_set_private_extensions = (

730

691

_library.gnutls_handshake_set_private_extensions)

731

handshake_set_private_extensions.argtypes = [ClientSession,

692

handshake_set_private_extensions.argtypes = [session_t,

732

693

ctypes.c_int]

733

694

handshake_set_private_extensions.restype = None

734

695

735

696

credentials_set = _library.gnutls_credentials_set

736

credentials_set.argtypes = [ClientSession, credentials_type_t,

737

CastToVoidPointer(Credentials)]

697

credentials_set.argtypes = [session_t, credentials_type_t,

698

ctypes.c_void_p]

738

699

credentials_set.restype = _error_code

739

700

740

701

strerror = _library.gnutls_strerror

742

703

strerror.restype = ctypes.c_char_p

743

704

744

705

certificate_type_get = _library.gnutls_certificate_type_get

745

certificate_type_get.argtypes = [ClientSession]

706

certificate_type_get.argtypes = [session_t]

746

707

certificate_type_get.restype = _error_code

747

708

748

709

certificate_get_peers = _library.gnutls_certificate_get_peers

749

certificate_get_peers.argtypes = [ClientSession,

710

certificate_get_peers.argtypes = [session_t,

750

711

ctypes.POINTER(ctypes.c_uint)]

751

712

certificate_get_peers.restype = ctypes.POINTER(datum_t)

752

713

759

720

global_set_log_function.restype = None

760

721

761

722

deinit = _library.gnutls_deinit

762

deinit.argtypes = [ClientSession]

723

deinit.argtypes = [session_t]

763

724

deinit.restype = None

764

725

765

726

handshake = _library.gnutls_handshake

766

handshake.argtypes = [ClientSession]

767

handshake.restype = ctypes.c_int

727

handshake.argtypes = [session_t]

728

handshake.restype = _error_code

768

729

handshake.errcheck = _retry_on_error

769

730

770

731

transport_set_ptr = _library.gnutls_transport_set_ptr

771

transport_set_ptr.argtypes = [ClientSession, transport_ptr_t]

732

transport_set_ptr.argtypes = [session_t, transport_ptr_t]

772

733

transport_set_ptr.restype = None

773

734

774

735

bye = _library.gnutls_bye

775

bye.argtypes = [ClientSession, close_request_t]

776

bye.restype = ctypes.c_int

736

bye.argtypes = [session_t, close_request_t]

737

bye.restype = _error_code

777

738

bye.errcheck = _retry_on_error

778

739

779

740

check_version = _library.gnutls_check_version

796

757

797

758

x509_crt_fmt_t = ctypes.c_int

798

759

799

# All the function declarations below are from

800

# gnutls/abstract.h

760

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

801

761

pubkey_init = _library.gnutls_pubkey_init

802

762

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

803

763

pubkey_init.restype = _error_code

817

777

pubkey_deinit.argtypes = [pubkey_t]

818

778

pubkey_deinit.restype = None

819

779

else:

820

# All the function declarations below are from

821

# gnutls/openpgp.h

780

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

822

781

823

782

openpgp_crt_init = _library.gnutls_openpgp_crt_init

824

783

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

830

789

openpgp_crt_fmt_t]

831

790

openpgp_crt_import.restype = _error_code

832

791

833

openpgp_crt_verify_self = \

834

_library.gnutls_openpgp_crt_verify_self

835

openpgp_crt_verify_self.argtypes = [

836

openpgp_crt_t,

837

ctypes.c_uint,

838

ctypes.POINTER(ctypes.c_uint),

839

]

792

openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self

793

openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,

794

ctypes.POINTER(ctypes.c_uint)]

840

795

openpgp_crt_verify_self.restype = _error_code

841

796

842

797

openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit

853

808

854

809

if check_version(b"3.6.4"):

855

810

certificate_type_get2 = _library.gnutls_certificate_type_get2

856

certificate_type_get2.argtypes = [ClientSession, ctypes.c_int]

811

certificate_type_get2.argtypes = [session_t, ctypes.c_int]

857

812

certificate_type_get2.restype = _error_code

858

813

859

814

# Remove non-public functions

875

830

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

876

831

877

832

Attributes:

878

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

833

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

879

834

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

880

835

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

881

836

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

882

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

837

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

883

838

running.

884

839

checker_callback_tag: a GLib event source tag, or None

885

840

checker_command: string; External command which is run to check

961

916

# key_id() and fingerprint() functions

962

917

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

963

918

.replace(" ", ""))

964

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

965

"").upper()

919

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

966

920

.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

921

if "secret" in section:

973

922

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

974

923

.encode("utf-8"),

1015

964

self.last_enabled = None

1016

965

self.expires = None

1017

966

1018

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

1019

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

1020

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

967

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

968

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

969

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

1021

970

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

1022

971

datetime.datetime.utcnow())

1023

972

1051

1000

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

1052

1001

# Already enabled

1053

1002

return

1003

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

1054

1004

self.enabled = True

1055

1005

self.last_enabled = datetime.datetime.utcnow()

1056

1006

self.init_checker()

1061

1011

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

1062

1012

return False

1063

1013

if not quiet:

1064

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

1014

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

1065

1015

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

1066

1016

GLib.source_remove(self.disable_initiator_tag)

1067

1017

self.disable_initiator_tag = None

1079

1029

def __del__(self):

1080

1030

self.disable()

1081

1031

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.

1032

def init_checker(self):

1033

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

1034

# and every interval from then on.

1087

1035

if self.checker_initiator_tag is not None:

1088

1036

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

1037

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

1038

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

1039

self.start_checker)

1040

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

1106

1041

if self.disable_initiator_tag is not None:

1107

1042

GLib.source_remove(self.disable_initiator_tag)

1108

1043

self.disable_initiator_tag = GLib.timeout_add(

1109

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

1110

self.disable)

1044

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

1045

# Also start a new checker *right now*.

1046

self.start_checker()

1111

1047

1112

1048

def checker_callback(self, source, condition, connection,

1113

1049

command):

1124

1060

self.last_checker_status = returncode

1125

1061

self.last_checker_signal = None

1126

1062

if self.last_checker_status == 0:

1127

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

1063

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

1064

vars(self))

1128

1065

self.checked_ok()

1129

1066

else:

1130

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

1067

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

1131

1068

else:

1132

1069

self.last_checker_status = -1

1133

1070

self.last_checker_signal = -returncode

1134

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

1071

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

1072

vars(self))

1135

1073

return False

1136

1074

1137

1075

def checked_ok(self):

1156

1094

def need_approval(self):

1157

1095

self.last_approval_request = datetime.datetime.utcnow()

1158

1096

1159

def start_checker(self, start_was_randomized=False):

1097

def start_checker(self):

1160

1098

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

1161

1099

1162

1100

If a checker already exists, leave it running and do

1171

1109

# should be.

1172

1110

1173

1111

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

1174

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

1112

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

1175

1113

self.checker.join()

1176

1114

self.checker = None

1177

1115

# Start a new checker if needed

1178

1116

if self.checker is None:

1179

1117

# Escape attributes for the shell

1180

1118

escaped_attrs = {

1181

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

1119

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

1182

1120

for attr in self.runtime_expansions}

1183

1121

try:

1184

1122

command = self.checker_command % escaped_attrs

1185

1123

except TypeError as error:

1186

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

1187

self.checker_command, exc_info=error)

1124

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

1125

self.checker_command,

1126

exc_info=error)

1188

1127

return True # Try again later

1189

1128

self.current_checker_command = command

1190

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

1129

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

1130

self.name)

1191

1131

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

1192

1132

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

1193

1133

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

1212

1152

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

1213

1153

GLib.PRIORITY_DEFAULT, GLib.IO_IN,

1214

1154

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

1155

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

1227

1156

return True

1228

1157

1233

1162

self.checker_callback_tag = None

1234

1163

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

1235

1164

return

1236

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

1165

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

1237

1166

self.checker.terminate()

1238

1167

self.checker = None

1239

1168

1266

1195

func._dbus_name = func.__name__

1267

1196

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

1268

1197

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

1269

func._dbus_get_args_options = {"byte_arrays": byte_arrays}

1198

func._dbus_get_args_options = {'byte_arrays': byte_arrays}

1270

1199

return func

1271

1200

1272

1201

return decorator

1361

1290

1362

1291

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1363

1292

out_signature="s",

1364

path_keyword="object_path",

1365

connection_keyword="connection")

1293

path_keyword='object_path',

1294

connection_keyword='connection')

1366

1295

def Introspect(self, object_path, connection):

1367

1296

"""Overloading of standard D-Bus method.

1368

1297

1417

1346

document.unlink()

1418

1347

except (AttributeError, xml.dom.DOMException,

1419

1348

xml.parsers.expat.ExpatError) as error:

1420

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

1421

exc_info=error)

1349

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

1350

exc_info=error)

1422

1351

return xmlstring

1423

1352

1424

1353

1521

1450

1522

1451

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1523

1452

out_signature="s",

1524

path_keyword="object_path",

1525

connection_keyword="connection")

1453

path_keyword='object_path',

1454

connection_keyword='connection')

1526

1455

def Introspect(self, object_path, connection):

1527

1456

"""Overloading of standard D-Bus method.

1528

1457

1584

1513

document.unlink()

1585

1514

except (AttributeError, xml.dom.DOMException,

1586

1515

xml.parsers.expat.ExpatError) as error:

1587

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

1588

exc_info=error)

1516

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

1517

exc_info=error)

1589

1518

return xmlstring

1590

1519

1591

1520

1623

1552

1624

1553

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1625

1554

out_signature="s",

1626

path_keyword="object_path",

1627

connection_keyword="connection")

1555

path_keyword='object_path',

1556

connection_keyword='connection')

1628

1557

def Introspect(self, object_path, connection):

1629

1558

"""Overloading of standard D-Bus method.

1630

1559

1655

1584

document.unlink()

1656

1585

except (AttributeError, xml.dom.DOMException,

1657

1586

xml.parsers.expat.ExpatError) as error:

1658

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

1659

exc_info=error)

1587

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

1588

exc_info=error)

1660

1589

return xmlstring

1661

1590

1662

1591

2296

2225

class ProxyClient:

2297

2226

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

2298

2227

self._pipe = child_pipe

2299

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

2228

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

2300

2229

if not self._pipe.recv():

2301

2230

raise KeyError(key_id or fpr)

2302

2231

2303

2232

def __getattribute__(self, name):

2304

if name == "_pipe":

2233

if name == '_pipe':

2305

2234

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

2306

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

2235

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

2307

2236

data = self._pipe.recv()

2308

if data[0] == "data":

2237

if data[0] == 'data':

2309

2238

return data[1]

2310

if data[0] == "function":

2239

if data[0] == 'function':

2311

2240

2312

2241

def func(*args, **kwargs):

2313

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

2242

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

2314

2243

return self._pipe.recv()[1]

2315

2244

2316

2245

return func

2317

2246

2318

2247

def __setattr__(self, name, value):

2319

if name == "_pipe":

2248

if name == '_pipe':

2320

2249

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

2321

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

2250

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

2322

2251

2323

2252

2324

2253

class ClientHandler(socketserver.BaseRequestHandler, object):

2329

2258

2330

2259

def handle(self):

2331

2260

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())

2261

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

2262

str(self.client_address))

2263

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

2264

self.server.child_pipe.fileno())

2335

2265

2336

2266

session = gnutls.ClientSession(self.request)

2337

2267

2338

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

2268

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

2339

2269

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

2340

2270

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

2341

2271

# "+DHE-DSS"))

2343

2273

priority = self.server.gnutls_priority

2344

2274

if priority is None:

2345

2275

priority = "NORMAL"

2346

gnutls.priority_set_direct(session,

2347

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

2276

gnutls.priority_set_direct(session._c_object,

2277

priority.encode("utf-8"),

2278

None)

2348

2279

2349

2280

# Start communication using the Mandos protocol

2350

2281

# Get protocol number

2351

2282

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

2352

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

2283

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

2353

2284

try:

2354

2285

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

2355

2286

raise RuntimeError(line)

2356

2287

except (ValueError, IndexError, RuntimeError) as error:

2357

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

2288

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

2358

2289

return

2359

2290

2360

2291

# Start GnuTLS connection

2361

2292

try:

2362

2293

session.handshake()

2363

2294

except gnutls.Error as error:

2364

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

2295

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

2365

2296

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

2366

2297

# established. Just abandon the request.

2367

2298

return

2368

log.debug("Handshake succeeded")

2299

logger.debug("Handshake succeeded")

2369

2300

2370

2301

approval_required = False

2371

2302

try:

2375

2306

key_id = self.key_id(

2376

2307

self.peer_certificate(session))

2377

2308

except (TypeError, gnutls.Error) as error:

2378

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

2309

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

2379

2310

return

2380

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

2381

key_id.decode("utf-8",

2382

errors="replace"))

2311

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

2383

2312

2384

2313

else:

2385

2314

key_id = b""

2387

2316

fpr = self.fingerprint(

2388

2317

self.peer_certificate(session))

2389

2318

except (TypeError, gnutls.Error) as error:

2390

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

2319

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

2391

2320

return

2392

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

2321

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

2393

2322

2394

2323

try:

2395

2324

client = ProxyClient(child_pipe, key_id, fpr,

2404

2333

2405

2334

while True:

2406

2335

if not client.enabled:

2407

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

2336

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

2337

client.name)

2408

2338

if self.server.use_dbus:

2409

2339

# Emit D-Bus signal

2410

2340

client.Rejected("Disabled")

2414

2344

# We are approved or approval is disabled

2415

2345

break

2416

2346

elif client.approved is None:

2417

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

2418

client.name)

2347

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

2348

client.name)

2419

2349

if self.server.use_dbus:

2420

2350

# Emit D-Bus signal

2421

2351

client.NeedApproval(

2422

2352

client.approval_delay.total_seconds()

2423

2353

* 1000, client.approved_by_default)

2424

2354

else:

2425

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

2426

client.name)

2355

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

2356

client.name)

2427

2357

if self.server.use_dbus:

2428

2358

# Emit D-Bus signal

2429

2359

client.Rejected("Denied")

2437

2367

time2 = datetime.datetime.now()

2438

2368

if (time2 - time) >= delay:

2439

2369

if not client.approved_by_default:

2440

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

2441

" waiting for approval",

2442

client.name)

2370

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

2371

" waiting for approval",

2372

client.name)

2443

2373

if self.server.use_dbus:

2444

2374

# Emit D-Bus signal

2445

2375

client.Rejected("Approval timed out")

2452

2382

try:

2453

2383

session.send(client.secret)

2454

2384

except gnutls.Error as error:

2455

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

2385

logger.warning("gnutls send failed",

2386

exc_info=error)

2456

2387

return

2457

2388

2458

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

2389

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

2459

2390

# bump the timeout using extended_timeout

2460

2391

client.bump_timeout(client.extended_timeout)

2461

2392

if self.server.use_dbus:

2468

2399

try:

2469

2400

session.bye()

2470

2401

except gnutls.Error as error:

2471

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

2402

logger.warning("GnuTLS bye failed",

2403

exc_info=error)

2472

2404

2473

2405

@staticmethod

2474

2406

def peer_certificate(session):

2475

2407

"Return the peer's certificate as a bytestring"

2476

2408

try:

2477

cert_type = gnutls.certificate_type_get2(

2478

session, gnutls.CTYPE_PEERS)

2409

cert_type = gnutls.certificate_type_get2(session._c_object,

2410

gnutls.CTYPE_PEERS)

2479

2411

except AttributeError:

2480

cert_type = gnutls.certificate_type_get(session)

2412

cert_type = gnutls.certificate_type_get(session._c_object)

2481

2413

if gnutls.has_rawpk:

2482

2414

valid_cert_types = frozenset((gnutls.CRT_RAWPK,))

2483

2415

else:

2484

2416

valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))

2485

2417

# If not a valid certificate type...

2486

2418

if cert_type not in valid_cert_types:

2487

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

2488

valid_cert_types)

2419

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

2420

valid_cert_types)

2489

2421

# ...return invalid data

2490

2422

return b""

2491

2423

list_size = ctypes.c_uint(1)

2492

2424

cert_list = (gnutls.certificate_get_peers

2493

(session, ctypes.byref(list_size)))

2425

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

2494

2426

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

2495

2427

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

2496

2428

if list_size.value == 0:

2518

2450

buf = ctypes.create_string_buffer(32)

2519

2451

buf_len = ctypes.c_size_t(len(buf))

2520

2452

# 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))

2453

gnutls.pubkey_get_key_id(pubkey,

2454

gnutls.KEYID_USE_SHA256,

2455

ctypes.cast(ctypes.byref(buf),

2456

ctypes.POINTER(ctypes.c_ubyte)),

2457

ctypes.byref(buf_len))

2527

2458

# Deinit the certificate

2528

2459

gnutls.pubkey_deinit(pubkey)

2529

2460

2610

2541

2611

2542

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

2612

2543

socketserver.TCPServer):

2613

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

2544

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

2614

2545

2615

2546

Attributes:

2616

2547

enabled: Boolean; whether this server is activated yet

2667

2598

if SO_BINDTODEVICE is None:

2668

2599

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

2669

2600

# common enough.

2670

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

2601

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

2671

2602

SO_BINDTODEVICE = 25

2672

2603

try:

2673

2604

self.socket.setsockopt(

2675

2606

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

2676

2607

except socket.error as error:

2677

2608

if error.errno == errno.EPERM:

2678

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

2679

self.interface)

2609

logger.error("No permission to bind to"

2610

" interface %s", self.interface)

2680

2611

elif error.errno == errno.ENOPROTOOPT:

2681

log.error("SO_BINDTODEVICE not available; cannot"

2682

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

2612

logger.error("SO_BINDTODEVICE not available;"

2613

" cannot bind to interface %s",

2614

self.interface)

2683

2615

elif error.errno == errno.ENODEV:

2684

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

2685

" bind", self.interface)

2616

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

2617

" cannot bind", self.interface)

2686

2618

else:

2687

2619

raise

2688

2620

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

2767

2699

request = parent_pipe.recv()

2768

2700

command = request[0]

2769

2701

2770

if command == "init":

2702

if command == 'init':

2771

2703

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

2772

2704

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

2773

2705

address = request[3]

2774

2706

2775

2707

for c in self.clients.values():

2776

if key_id == ("E3B0C44298FC1C149AFBF4C8996FB924"

2777

"27AE41E4649B934CA495991B7852B855"):

2708

if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":

2778

2709

continue

2779

2710

if key_id and c.key_id == key_id:

2780

2711

client = c

2783

2714

client = c

2784

2715

break

2785

2716

else:

2786

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

2787

" %s", key_id or fpr, address)

2717

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

2718

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

2788

2719

if self.use_dbus:

2789

2720

# Emit D-Bus signal

2790

2721

mandos_dbus_service.ClientNotFound(key_id or fpr,

2803

2734

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

2804

2735

# same fileno

2805

2736

return False

2806

if command == "funcall":

2737

if command == 'funcall':

2807

2738

funcname = request[1]

2808

2739

args = request[2]

2809

2740

kwargs = request[3]

2810

2741

2811

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

2742

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

2812

2743

funcname)(*args,

2813

2744

**kwargs)))

2814

2745

2815

if command == "getattr":

2746

if command == 'getattr':

2816

2747

attrname = request[1]

2817

2748

if isinstance(client_object.__getattribute__(attrname),

2818

collections.abc.Callable):

2819

parent_pipe.send(("function", ))

2749

collections.Callable):

2750

parent_pipe.send(('function', ))

2820

2751

else:

2821

2752

parent_pipe.send((

2822

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

2753

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

2823

2754

2824

if command == "setattr":

2755

if command == 'setattr':

2825

2756

attrname = request[1]

2826

2757

value = request[2]

2827

2758

setattr(client_object, attrname, value)

2832

2763

def rfc3339_duration_to_delta(duration):

2833

2764

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

2834

2765

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

2766

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

2767

True

2768

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

2769

True

2770

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

2771

True

2772

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

2773

True

2774

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

2775

True

2776

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

2777

True

2778

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

2779

True

2851

2780

"""

2852

2781

2853

2782

# Parsing an RFC 3339 duration with regular expressions is not

2933

2862

def string_to_delta(interval):

2934

2863

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

2935

2864

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)

2865

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

2866

True

2867

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

2868

True

2869

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

2870

True

2871

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

2872

True

2873

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

2874

True

2875

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

2947

2876

True

2948

2877

"""

2949

2878

3153

3082

3154

3083

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

3155

3084

syslogger.setFormatter(

3156

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

3157

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

3085

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

3086

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

3158

3087

server_settings["servicename"])))

3159

3088

3160

3089

# Parse config file with clients

3184

3113

try:

3185

3114

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

3186

3115

except IOError as e:

3187

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

3188

exc_info=e)

3116

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

3117

exc_info=e)

3189

3118

3190

3119

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

3191

3120

("mandos", "mandos"),

3202

3131

try:

3203

3132

os.setgid(gid)

3204

3133

os.setuid(uid)

3205

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

3134

if debug:

3135

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

3136

gid))

3206

3137

except OSError as error:

3207

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

3208

os.strerror(error.errno))

3138

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

3139

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

3209

3140

if error.errno != errno.EPERM:

3210

3141

raise

3211

3142

3218

3149

3219

3150

@gnutls.log_func

3220

3151

def debug_gnutls(level, string):

3221

log.debug("GnuTLS: %s",

3222

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

3152

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

3223

3153

3224

3154

gnutls.global_set_log_function(debug_gnutls)

3225

3155

3254

3184

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

3255

3185

do_not_queue=True)

3256

3186

except dbus.exceptions.DBusException as e:

3257

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

3187

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

3258

3188

use_dbus = False

3259

3189

server_settings["use_dbus"] = False

3260

3190

tcp_server.use_dbus = False

3345

3275

os.remove(stored_state_path)

3346

3276

except IOError as e:

3347

3277

if e.errno == errno.ENOENT:

3348

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

3349

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

3278

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

3279

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

3350

3280

else:

3351

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

3352

exc_info=e)

3281

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

3282

exc_info=e)

3353

3283

raise

3354

3284

except EOFError as e:

3355

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

3356

exc_info=e)

3285

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

3286

"EOFError:",

3287

exc_info=e)

3357

3288

3358

3289

with PGPEngine() as pgp:

3359

3290

for client_name, client in clients_data.items():

3386

3317

if client["enabled"]:

3387

3318

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

3388

3319

if not client["last_checked_ok"]:

3389

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

3390

" never performed a successful"

3391

" checker", client_name)

3320

logger.warning(

3321

"disabling client {} - Client never "

3322

"performed a successful checker".format(

3323

client_name))

3392

3324

client["enabled"] = False

3393

3325

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"])

3326

logger.warning(

3327

"disabling client {} - Client last"

3328

" checker failed with error code"

3329

" {}".format(

3330

client_name,

3331

client["last_checker_status"]))

3398

3332

client["enabled"] = False

3399

3333

else:

3400

3334

client["expires"] = (

3401

3335

datetime.datetime.utcnow()

3402

3336

+ client["timeout"])

3403

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

3404

" enabled", client_name)

3337

logger.debug("Last checker succeeded,"

3338

" keeping {} enabled".format(

3339

client_name))

3405

3340

try:

3406

3341

client["secret"] = pgp.decrypt(

3407

3342

client["encrypted_secret"],

3408

3343

client_settings[client_name]["secret"])

3409

3344

except PGPError:

3410

3345

# If decryption fails, we use secret from new settings

3411

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

3412

client_name)

3346

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

3347

client_name))

3413

3348

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

3414

3349

["secret"])

3415

3350

3429

3364

server_settings=server_settings)

3430

3365

3431

3366

if not tcp_server.clients:

3432

log.warning("No clients defined")

3367

logger.warning("No clients defined")

3433

3368

3434

3369

if not foreground:

3435

3370

if pidfile is not None:

3438

3373

with pidfile:

3439

3374

print(pid, file=pidfile)

3440

3375

except IOError:

3441

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

3442

pidfilename, pid)

3376

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

3377

pidfilename, pid)

3443

3378

del pidfile

3444

3379

del pidfilename

3445

3380

3595

3530

3596

3531

try:

3597

3532

with tempfile.NamedTemporaryFile(

3598

mode="wb",

3533

mode='wb',

3599

3534

suffix=".pickle",

3600

prefix="clients-",

3535

prefix='clients-',

3601

3536

dir=os.path.dirname(stored_state_path),

3602

3537

delete=False) as stored_state:

3603

3538

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

3611

3546

except NameError:

3612

3547

pass

3613

3548

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

3614

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

3615

os.strerror(e.errno))

3549

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

3550

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

3616

3551

else:

3617

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

3618

exc_info=e)

3552

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

3553

exc_info=e)

3619

3554

raise

3620

3555

3621

3556

# Delete all clients, and settings from config

3638

3573

mandos_dbus_service.client_added_signal(client)

3639

3574

# Need to initiate checking of clients

3640

3575

if client.enabled:

3641

client.init_checker(randomize_start=True)

3576

client.init_checker()

3642

3577

3643

3578

tcp_server.enable()

3644

3579

tcp_server.server_activate()

3647

3582

if zeroconf:

3648

3583

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

3649

3584

if use_ipv6:

3650

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

3651

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

3585

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

3586

" flowinfo %d, scope_id %d",

3587

*tcp_server.socket.getsockname())

3652

3588

else: # IPv4

3653

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

3654

*tcp_server.socket.getsockname())

3589

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

3590

*tcp_server.socket.getsockname())

3655

3591

3656

3592

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

3657

3593

3661

3597

try:

3662

3598

service.activate()

3663

3599

except dbus.exceptions.DBusException as error:

3664

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

3600

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

3665

3601

cleanup()

3666

3602

sys.exit(1)

3667

3603

# End of Avahi example code

3672

3608

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

3673

3609

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

3674

3610

3675

log.debug("Starting main loop")

3611

logger.debug("Starting main loop")

3676

3612

main_loop.run()

3677

3613

except AvahiError as error:

3678

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

3614

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

3679

3615

cleanup()

3680

3616

sys.exit(1)

3681

3617

except KeyboardInterrupt:

3682

3618

if debug:

3683

3619

print("", file=sys.stderr)

3684

log.debug("Server received KeyboardInterrupt")

3685

log.debug("Server exiting")

3620

logger.debug("Server received KeyboardInterrupt")

3621

logger.debug("Server exiting")

3686

3622

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

3687

3623

cleanup()

3688

3624

3689

3625

3690

def parse_test_args():

3691

# type: () -> argparse.Namespace

3626

def should_only_run_tests():

3692

3627

parser = argparse.ArgumentParser(add_help=False)

3693

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

3694

parser.add_argument("--prefix", )

3628

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

3695

3629

args, unknown_args = parser.parse_known_args()

3696

if args.check:

3697

# Remove test options from sys.argv

3630

run_tests = args.check

3631

if run_tests:

3632

# Remove --check argument from sys.argv

3698

3633

sys.argv[1:] = unknown_args

3699

return args

3634

return run_tests

3700

3635

3701

3636

# Add all tests from doctest strings

3702

3637

def load_tests(loader, tests, none):

3704

3639

tests.addTests(doctest.DocTestSuite())

3705

3640

return tests

3706

3641

3707

if __name__ == "__main__":

3708

options = parse_test_args()

3642

if __name__ == '__main__':

3709

3643

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=[""])

3644

if should_only_run_tests():

3645

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

3646

unittest.main()

3722

3647

else:

3723

3648

main()

3724

3649

finally:

3725

3650

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: