/mandos/trunk : revision 1274

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#!/usr/bin/python3 -bI

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

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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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# No value found

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SO_BINDTODEVICE = None

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if sys.version_info.major == 2:

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str = unicode

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if sys.version_info < (3, 2):

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configparser.Configparser = configparser.SafeConfigParser

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version = "1.8.9"

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version = "1.8.16"

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stored_state_file = "clients.pickle"

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logger = logging.getLogger()

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

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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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logger.addHandler(syslogger)

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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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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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logger.addHandler(console)

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logger.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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log.addHandler(console)

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

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self.name)

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

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

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return self.rename(remove=False)

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else:

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

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

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

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if state == avahi.ENTRY_GROUP_ESTABLISHED:

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logger.debug("Zeroconf service established.")

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log.debug("Zeroconf service established.")

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elif state == avahi.ENTRY_GROUP_COLLISION:

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

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

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str(error))

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log.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"""

463

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

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log.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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logger.error(bad_states[state])

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log.error(bad_states[state])

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else:

475

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

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log.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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logger.info("Local Zeroconf service name"

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" collision.")

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

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return self.rename(remove=False)

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else:

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

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

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

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else:

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

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

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510

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, **kwargs)

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

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**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

550

class session_int(ctypes.Structure):

565

class _session_int(ctypes.Structure):

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566

_fields_ = []

552

session_t = ctypes.POINTER(session_int)

567

session_t = ctypes.POINTER(_session_int)

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568

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569

class certificate_credentials_st(ctypes.Structure):

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570

_fields_ = []

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certificate_type_t = ctypes.c_int

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574

560

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class datum_t(ctypes.Structure):

561

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

562

('size', ctypes.c_uint)]

576

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

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("size", ctypes.c_uint)]

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578

564

class openpgp_crt_int(ctypes.Structure):

579

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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582

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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584

credentials_type_t = ctypes.c_int

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593

# gnutls.strerror()

579

594

self.code = code

580

595

if message is None and code is not None:

581

message = gnutls.strerror(code)

596

message = gnutls.strerror(code).decode(

597

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

582

598

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

583

599

message, *args)

584

600

585

601

class CertificateSecurityError(Error):

586

602

pass

587

603

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

588

629

# Classes

589

class Credentials:

630

class Credentials(With_from_param):

590

631

def __init__(self):

591

self._c_object = gnutls.certificate_credentials_t()

592

gnutls.certificate_allocate_credentials(

593

ctypes.byref(self._c_object))

632

self._as_parameter_ = gnutls.certificate_credentials_t()

633

gnutls.certificate_allocate_credentials(self)

594

634

self.type = gnutls.CRD_CERTIFICATE

595

635

596

636

def __del__(self):

597

gnutls.certificate_free_credentials(self._c_object)

637

gnutls.certificate_free_credentials(self)

598

638

599

class ClientSession:

639

class ClientSession(With_from_param):

600

640

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

601

self._c_object = gnutls.session_t()

641

self._as_parameter_ = gnutls.session_t()

602

642

gnutls_flags = gnutls.CLIENT

603

643

if gnutls.check_version(b"3.5.6"):

604

644

gnutls_flags |= gnutls.NO_TICKETS

605

645

if gnutls.has_rawpk:

606

646

gnutls_flags |= gnutls.ENABLE_RAWPK

607

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

647

gnutls.init(self, gnutls_flags)

608

648

del gnutls_flags

609

gnutls.set_default_priority(self._c_object)

610

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

611

gnutls.handshake_set_private_extensions(self._c_object,

612

True)

649

gnutls.set_default_priority(self)

650

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

651

gnutls.handshake_set_private_extensions(self, True)

613

652

self.socket = socket

614

653

if credentials is None:

615

654

credentials = gnutls.Credentials()

616

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

617

ctypes.cast(credentials._c_object,

618

ctypes.c_void_p))

655

gnutls.credentials_set(self, credentials.type,

656

credentials)

619

657

self.credentials = credentials

620

658

621

659

def __del__(self):

622

gnutls.deinit(self._c_object)

660

gnutls.deinit(self)

623

661

624

662

def handshake(self):

625

return gnutls.handshake(self._c_object)

663

return gnutls.handshake(self)

626

664

627

665

def send(self, data):

628

666

data = bytes(data)

629

667

data_len = len(data)

630

668

while data_len > 0:

631

data_len -= gnutls.record_send(self._c_object,

632

data[-data_len:],

669

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

633

670

data_len)

634

671

635

672

def bye(self):

636

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

673

return gnutls.bye(self, gnutls.SHUT_RDWR)

637

674

638

675

# Error handling functions

639

676

def _error_code(result):

640

677

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

641

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

642

if result >= 0:

678

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

679

if result >= gnutls.E_SUCCESS:

643

680

return result

644

681

if result == gnutls.E_NO_CERTIFICATE_FOUND:

645

682

raise gnutls.CertificateSecurityError(code=result)

646

683

raise gnutls.Error(code=result)

647

684

648

def _retry_on_error(result, func, arguments):

685

def _retry_on_error(result, func, arguments,

686

_error_code=_error_code):

649

687

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

650

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

651

while result < 0:

688

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

689

while result < gnutls.E_SUCCESS:

652

690

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

653

691

return _error_code(result)

654

692

result = func(*arguments)

659

697

660

698

# Functions

661

699

priority_set_direct = _library.gnutls_priority_set_direct

662

priority_set_direct.argtypes = [session_t, ctypes.c_char_p,

700

priority_set_direct.argtypes = [ClientSession, ctypes.c_char_p,

663

701

ctypes.POINTER(ctypes.c_char_p)]

664

702

priority_set_direct.restype = _error_code

665

703

666

704

init = _library.gnutls_init

667

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

705

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

668

706

init.restype = _error_code

669

707

670

708

set_default_priority = _library.gnutls_set_default_priority

671

set_default_priority.argtypes = [session_t]

709

set_default_priority.argtypes = [ClientSession]

672

710

set_default_priority.restype = _error_code

673

711

674

712

record_send = _library.gnutls_record_send

675

record_send.argtypes = [session_t, ctypes.c_void_p,

713

record_send.argtypes = [ClientSession, ctypes.c_void_p,

676

714

ctypes.c_size_t]

677

715

record_send.restype = ctypes.c_ssize_t

678

716

record_send.errcheck = _retry_on_error

680

718

certificate_allocate_credentials = (

681

719

_library.gnutls_certificate_allocate_credentials)

682

720

certificate_allocate_credentials.argtypes = [

683

ctypes.POINTER(certificate_credentials_t)]

721

PointerTo(Credentials)]

684

722

certificate_allocate_credentials.restype = _error_code

685

723

686

724

certificate_free_credentials = (

687

725

_library.gnutls_certificate_free_credentials)

688

certificate_free_credentials.argtypes = [

689

certificate_credentials_t]

726

certificate_free_credentials.argtypes = [Credentials]

690

727

certificate_free_credentials.restype = None

691

728

692

729

handshake_set_private_extensions = (

693

730

_library.gnutls_handshake_set_private_extensions)

694

handshake_set_private_extensions.argtypes = [session_t,

731

handshake_set_private_extensions.argtypes = [ClientSession,

695

732

ctypes.c_int]

696

733

handshake_set_private_extensions.restype = None

697

734

698

735

credentials_set = _library.gnutls_credentials_set

699

credentials_set.argtypes = [session_t, credentials_type_t,

700

ctypes.c_void_p]

736

credentials_set.argtypes = [ClientSession, credentials_type_t,

737

CastToVoidPointer(Credentials)]

701

738

credentials_set.restype = _error_code

702

739

703

740

strerror = _library.gnutls_strerror

705

742

strerror.restype = ctypes.c_char_p

706

743

707

744

certificate_type_get = _library.gnutls_certificate_type_get

708

certificate_type_get.argtypes = [session_t]

745

certificate_type_get.argtypes = [ClientSession]

709

746

certificate_type_get.restype = _error_code

710

747

711

748

certificate_get_peers = _library.gnutls_certificate_get_peers

712

certificate_get_peers.argtypes = [session_t,

749

certificate_get_peers.argtypes = [ClientSession,

713

750

ctypes.POINTER(ctypes.c_uint)]

714

751

certificate_get_peers.restype = ctypes.POINTER(datum_t)

715

752

722

759

global_set_log_function.restype = None

723

760

724

761

deinit = _library.gnutls_deinit

725

deinit.argtypes = [session_t]

762

deinit.argtypes = [ClientSession]

726

763

deinit.restype = None

727

764

728

765

handshake = _library.gnutls_handshake

729

handshake.argtypes = [session_t]

730

handshake.restype = _error_code

766

handshake.argtypes = [ClientSession]

767

handshake.restype = ctypes.c_int

731

768

handshake.errcheck = _retry_on_error

732

769

733

770

transport_set_ptr = _library.gnutls_transport_set_ptr

734

transport_set_ptr.argtypes = [session_t, transport_ptr_t]

771

transport_set_ptr.argtypes = [ClientSession, transport_ptr_t]

735

772

transport_set_ptr.restype = None

736

773

737

774

bye = _library.gnutls_bye

738

bye.argtypes = [session_t, close_request_t]

739

bye.restype = _error_code

775

bye.argtypes = [ClientSession, close_request_t]

776

bye.restype = ctypes.c_int

740

777

bye.errcheck = _retry_on_error

741

778

742

779

check_version = _library.gnutls_check_version

759

796

760

797

x509_crt_fmt_t = ctypes.c_int

761

798

762

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

799

# All the function declarations below are from

800

# gnutls/abstract.h

763

801

pubkey_init = _library.gnutls_pubkey_init

764

802

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

765

803

pubkey_init.restype = _error_code

779

817

pubkey_deinit.argtypes = [pubkey_t]

780

818

pubkey_deinit.restype = None

781

819

else:

782

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

820

# All the function declarations below are from

821

# gnutls/openpgp.h

783

822

784

823

openpgp_crt_init = _library.gnutls_openpgp_crt_init

785

824

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

791

830

openpgp_crt_fmt_t]

792

831

openpgp_crt_import.restype = _error_code

793

832

794

openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self

795

openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,

796

ctypes.POINTER(ctypes.c_uint)]

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

]

797

840

openpgp_crt_verify_self.restype = _error_code

798

841

799

842

openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit

810

853

811

854

if check_version(b"3.6.4"):

812

855

certificate_type_get2 = _library.gnutls_certificate_type_get2

813

certificate_type_get2.argtypes = [session_t, ctypes.c_int]

856

certificate_type_get2.argtypes = [ClientSession, ctypes.c_int]

814

857

certificate_type_get2.restype = _error_code

815

858

816

859

# Remove non-public functions

832

875

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

833

876

834

877

Attributes:

835

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

878

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

836

879

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

837

880

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

838

881

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

839

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

882

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

840

883

running.

841

884

checker_callback_tag: a GLib event source tag, or None

842

885

checker_command: string; External command which is run to check

966

1009

self.last_enabled = None

967

1010

self.expires = None

968

1011

969

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

970

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

971

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

1012

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

1013

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

1014

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

972

1015

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

973

1016

datetime.datetime.utcnow())

974

1017

1002

1045

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

1003

1046

# Already enabled

1004

1047

return

1005

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

1006

1048

self.enabled = True

1007

1049

self.last_enabled = datetime.datetime.utcnow()

1008

1050

self.init_checker()

1013

1055

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

1014

1056

return False

1015

1057

if not quiet:

1016

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

1058

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

1017

1059

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

1018

1060

GLib.source_remove(self.disable_initiator_tag)

1019

1061

self.disable_initiator_tag = None

1031

1073

def __del__(self):

1032

1074

self.disable()

1033

1075

1034

def init_checker(self):

1035

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

1036

# and every interval from then on.

1076

def init_checker(self, randomize_start=False):

1077

# Schedule a new checker to be started a randomly selected

1078

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

1079

# the startup of checkers over time when the server is

1080

# started.

1037

1081

if self.checker_initiator_tag is not None:

1038

1082

GLib.source_remove(self.checker_initiator_tag)

1083

interval_milliseconds = int(self.interval.total_seconds()

1084

* 1000)

1085

if randomize_start:

1086

delay_milliseconds = random.randrange(

1087

interval_milliseconds + 1)

1088

else:

1089

delay_milliseconds = interval_milliseconds

1039

1090

self.checker_initiator_tag = GLib.timeout_add(

1040

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

1041

self.start_checker)

1042

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

1091

delay_milliseconds, self.start_checker, randomize_start)

1092

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

1093

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

1094

# expire at the soonest one interval after a checker was

1095

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

1096

# time might have to be extended.

1097

now = datetime.datetime.utcnow()

1098

self.expires = now + delay + self.interval

1099

# Schedule a disable() at expire time

1043

1100

if self.disable_initiator_tag is not None:

1044

1101

GLib.source_remove(self.disable_initiator_tag)

1045

1102

self.disable_initiator_tag = GLib.timeout_add(

1046

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

1047

# Also start a new checker *right now*.

1048

self.start_checker()

1103

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

1104

self.disable)

1049

1105

1050

1106

def checker_callback(self, source, condition, connection,

1051

1107

command):

1062

1118

self.last_checker_status = returncode

1063

1119

self.last_checker_signal = None

1064

1120

if self.last_checker_status == 0:

1065

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

1066

vars(self))

1121

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

1067

1122

self.checked_ok()

1068

1123

else:

1069

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

1124

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

1070

1125

else:

1071

1126

self.last_checker_status = -1

1072

1127

self.last_checker_signal = -returncode

1073

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

1074

vars(self))

1128

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

1075

1129

return False

1076

1130

1077

1131

def checked_ok(self):

1096

1150

def need_approval(self):

1097

1151

self.last_approval_request = datetime.datetime.utcnow()

1098

1152

1099

def start_checker(self):

1153

def start_checker(self, start_was_randomized=False):

1100

1154

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

1101

1155

1102

1156

If a checker already exists, leave it running and do

1111

1165

# should be.

1112

1166

1113

1167

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

1114

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

1168

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

1115

1169

self.checker.join()

1116

1170

self.checker = None

1117

1171

# Start a new checker if needed

1118

1172

if self.checker is None:

1119

1173

# Escape attributes for the shell

1120

1174

escaped_attrs = {

1121

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

1175

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

1122

1176

for attr in self.runtime_expansions}

1123

1177

try:

1124

1178

command = self.checker_command % escaped_attrs

1125

1179

except TypeError as error:

1126

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

1127

self.checker_command,

1128

exc_info=error)

1180

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

1181

self.checker_command, exc_info=error)

1129

1182

return True # Try again later

1130

1183

self.current_checker_command = command

1131

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

1132

self.name)

1184

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

1133

1185

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

1134

1186

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

1135

1187

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

1154

1206

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

1155

1207

GLib.PRIORITY_DEFAULT, GLib.IO_IN,

1156

1208

self.checker_callback, pipe[0], command)

1209

if start_was_randomized:

1210

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

1211

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

1212

# interval from then on.

1213

now = datetime.datetime.utcnow()

1214

self.checker_initiator_tag = GLib.timeout_add(

1215

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

1216

self.start_checker)

1217

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

1218

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

1219

return False

1157

1220

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

1158

1221

return True

1159

1222

1164

1227

self.checker_callback_tag = None

1165

1228

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

1166

1229

return

1167

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

1230

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

1168

1231

self.checker.terminate()

1169

1232

self.checker = None

1170

1233

1197

1260

func._dbus_name = func.__name__

1198

1261

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

1199

1262

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

1200

func._dbus_get_args_options = {'byte_arrays': byte_arrays}

1263

func._dbus_get_args_options = {"byte_arrays": byte_arrays}

1201

1264

return func

1202

1265

1203

1266

return decorator

1292

1355

1293

1356

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1294

1357

out_signature="s",

1295

path_keyword='object_path',

1296

connection_keyword='connection')

1358

path_keyword="object_path",

1359

connection_keyword="connection")

1297

1360

def Introspect(self, object_path, connection):

1298

1361

"""Overloading of standard D-Bus method.

1299

1362

1348

1411

document.unlink()

1349

1412

except (AttributeError, xml.dom.DOMException,

1350

1413

xml.parsers.expat.ExpatError) as error:

1351

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

1352

exc_info=error)

1414

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

1415

exc_info=error)

1353

1416

return xmlstring

1354

1417

1355

1418

1413

1476

raise ValueError("Byte arrays not supported for non-"

1414

1477

"'ay' signature {!r}"

1415

1478

.format(prop._dbus_signature))

1416

value = dbus.ByteArray(b''.join(chr(byte)

1417

for byte in value))

1479

value = dbus.ByteArray(bytes(value))

1418

1480

prop(value)

1419

1481

1420

1482

@dbus.service.method(dbus.PROPERTIES_IFACE,

1453

1515

1454

1516

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1455

1517

out_signature="s",

1456

path_keyword='object_path',

1457

connection_keyword='connection')

1518

path_keyword="object_path",

1519

connection_keyword="connection")

1458

1520

def Introspect(self, object_path, connection):

1459

1521

"""Overloading of standard D-Bus method.

1460

1522

1516

1578

document.unlink()

1517

1579

except (AttributeError, xml.dom.DOMException,

1518

1580

xml.parsers.expat.ExpatError) as error:

1519

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

1520

exc_info=error)

1581

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

1582

exc_info=error)

1521

1583

return xmlstring

1522

1584

1523

1585

1555

1617

1556

1618

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1557

1619

out_signature="s",

1558

path_keyword='object_path',

1559

connection_keyword='connection')

1620

path_keyword="object_path",

1621

connection_keyword="connection")

1560

1622

def Introspect(self, object_path, connection):

1561

1623

"""Overloading of standard D-Bus method.

1562

1624

1587

1649

document.unlink()

1588

1650

except (AttributeError, xml.dom.DOMException,

1589

1651

xml.parsers.expat.ExpatError) as error:

1590

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

1591

exc_info=error)

1652

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

1653

exc_info=error)

1592

1654

return xmlstring

1593

1655

1594

1656

2228

2290

class ProxyClient:

2229

2291

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

2230

2292

self._pipe = child_pipe

2231

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

2293

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

2232

2294

if not self._pipe.recv():

2233

2295

raise KeyError(key_id or fpr)

2234

2296

2235

2297

def __getattribute__(self, name):

2236

if name == '_pipe':

2298

if name == "_pipe":

2237

2299

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

2238

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

2300

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

2239

2301

data = self._pipe.recv()

2240

if data[0] == 'data':

2302

if data[0] == "data":

2241

2303

return data[1]

2242

if data[0] == 'function':

2304

if data[0] == "function":

2243

2305

2244

2306

def func(*args, **kwargs):

2245

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

2307

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

2246

2308

return self._pipe.recv()[1]

2247

2309

2248

2310

return func

2249

2311

2250

2312

def __setattr__(self, name, value):

2251

if name == '_pipe':

2313

if name == "_pipe":

2252

2314

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

2253

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

2315

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

2254

2316

2255

2317

2256

2318

class ClientHandler(socketserver.BaseRequestHandler, object):

2261

2323

2262

2324

def handle(self):

2263

2325

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

2264

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

2265

str(self.client_address))

2266

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

2267

self.server.child_pipe.fileno())

2326

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

2327

str(self.client_address))

2328

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

2268

2329

2269

2330

session = gnutls.ClientSession(self.request)

2270

2331

2271

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

2332

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

2272

2333

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

2273

2334

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

2274

2335

# "+DHE-DSS"))

2276

2337

priority = self.server.gnutls_priority

2277

2338

if priority is None:

2278

2339

priority = "NORMAL"

2279

gnutls.priority_set_direct(session._c_object,

2280

priority.encode("utf-8"),

2281

None)

2340

gnutls.priority_set_direct(session,

2341

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

2282

2342

2283

2343

# Start communication using the Mandos protocol

2284

2344

# Get protocol number

2285

2345

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

2286

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

2346

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

2287

2347

try:

2288

2348

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

2289

2349

raise RuntimeError(line)

2290

2350

except (ValueError, IndexError, RuntimeError) as error:

2291

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

2351

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

2292

2352

return

2293

2353

2294

2354

# Start GnuTLS connection

2295

2355

try:

2296

2356

session.handshake()

2297

2357

except gnutls.Error as error:

2298

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

2358

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

2299

2359

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

2300

2360

# established. Just abandon the request.

2301

2361

return

2302

logger.debug("Handshake succeeded")

2362

log.debug("Handshake succeeded")

2303

2363

2304

2364

approval_required = False

2305

2365

try:

2309

2369

key_id = self.key_id(

2310

2370

self.peer_certificate(session))

2311

2371

except (TypeError, gnutls.Error) as error:

2312

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

2372

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

2313

2373

return

2314

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

2374

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

2375

key_id.decode("utf-8",

2376

errors="replace"))

2315

2377

2316

2378

else:

2317

2379

key_id = b""

2319

2381

fpr = self.fingerprint(

2320

2382

self.peer_certificate(session))

2321

2383

except (TypeError, gnutls.Error) as error:

2322

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

2384

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

2323

2385

return

2324

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

2386

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

2325

2387

2326

2388

try:

2327

2389

client = ProxyClient(child_pipe, key_id, fpr,

2336

2398

2337

2399

while True:

2338

2400

if not client.enabled:

2339

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

2340

client.name)

2401

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

2341

2402

if self.server.use_dbus:

2342

2403

# Emit D-Bus signal

2343

2404

client.Rejected("Disabled")

2347

2408

# We are approved or approval is disabled

2348

2409

break

2349

2410

elif client.approved is None:

2350

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

2351

client.name)

2411

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

2412

client.name)

2352

2413

if self.server.use_dbus:

2353

2414

# Emit D-Bus signal

2354

2415

client.NeedApproval(

2355

2416

client.approval_delay.total_seconds()

2356

2417

* 1000, client.approved_by_default)

2357

2418

else:

2358

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

2359

client.name)

2419

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

2420

client.name)

2360

2421

if self.server.use_dbus:

2361

2422

# Emit D-Bus signal

2362

2423

client.Rejected("Denied")

2370

2431

time2 = datetime.datetime.now()

2371

2432

if (time2 - time) >= delay:

2372

2433

if not client.approved_by_default:

2373

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

2374

" waiting for approval",

2375

client.name)

2434

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

2435

" waiting for approval",

2436

client.name)

2376

2437

if self.server.use_dbus:

2377

2438

# Emit D-Bus signal

2378

2439

client.Rejected("Approval timed out")

2385

2446

try:

2386

2447

session.send(client.secret)

2387

2448

except gnutls.Error as error:

2388

logger.warning("gnutls send failed",

2389

exc_info=error)

2449

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

2390

2450

return

2391

2451

2392

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

2452

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

2393

2453

# bump the timeout using extended_timeout

2394

2454

client.bump_timeout(client.extended_timeout)

2395

2455

if self.server.use_dbus:

2402

2462

try:

2403

2463

session.bye()

2404

2464

except gnutls.Error as error:

2405

logger.warning("GnuTLS bye failed",

2406

exc_info=error)

2465

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

2407

2466

2408

2467

@staticmethod

2409

2468

def peer_certificate(session):

2410

2469

"Return the peer's certificate as a bytestring"

2411

2470

try:

2412

cert_type = gnutls.certificate_type_get2(session._c_object,

2413

gnutls.CTYPE_PEERS)

2471

cert_type = gnutls.certificate_type_get2(

2472

session, gnutls.CTYPE_PEERS)

2414

2473

except AttributeError:

2415

cert_type = gnutls.certificate_type_get(session._c_object)

2474

cert_type = gnutls.certificate_type_get(session)

2416

2475

if gnutls.has_rawpk:

2417

2476

valid_cert_types = frozenset((gnutls.CRT_RAWPK,))

2418

2477

else:

2419

2478

valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))

2420

2479

# If not a valid certificate type...

2421

2480

if cert_type not in valid_cert_types:

2422

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

2423

valid_cert_types)

2481

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

2482

valid_cert_types)

2424

2483

# ...return invalid data

2425

2484

return b""

2426

2485

list_size = ctypes.c_uint(1)

2427

2486

cert_list = (gnutls.certificate_get_peers

2428

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

2487

(session, ctypes.byref(list_size)))

2429

2488

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

2430

2489

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

2431

2490

if list_size.value == 0:

2453

2512

buf = ctypes.create_string_buffer(32)

2454

2513

buf_len = ctypes.c_size_t(len(buf))

2455

2514

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

2456

gnutls.pubkey_get_key_id(pubkey,

2457

gnutls.KEYID_USE_SHA256,

2458

ctypes.cast(ctypes.byref(buf),

2459

ctypes.POINTER(ctypes.c_ubyte)),

2460

ctypes.byref(buf_len))

2515

gnutls.pubkey_get_key_id(

2516

pubkey,

2517

gnutls.KEYID_USE_SHA256,

2518

ctypes.cast(ctypes.byref(buf),

2519

ctypes.POINTER(ctypes.c_ubyte)),

2520

ctypes.byref(buf_len))

2461

2521

# Deinit the certificate

2462

2522

gnutls.pubkey_deinit(pubkey)

2463

2523

2544

2604

2545

2605

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

2546

2606

socketserver.TCPServer):

2547

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

2607

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

2548

2608

2549

2609

Attributes:

2550

2610

enabled: Boolean; whether this server is activated yet

2601

2661

if SO_BINDTODEVICE is None:

2602

2662

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

2603

2663

# common enough.

2604

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

2664

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

2605

2665

SO_BINDTODEVICE = 25

2606

2666

try:

2607

2667

self.socket.setsockopt(

2609

2669

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

2610

2670

except socket.error as error:

2611

2671

if error.errno == errno.EPERM:

2612

logger.error("No permission to bind to"

2613

" interface %s", self.interface)

2672

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

2673

self.interface)

2614

2674

elif error.errno == errno.ENOPROTOOPT:

2615

logger.error("SO_BINDTODEVICE not available;"

2616

" cannot bind to interface %s",

2617

self.interface)

2675

log.error("SO_BINDTODEVICE not available; cannot"

2676

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

2618

2677

elif error.errno == errno.ENODEV:

2619

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

2620

" cannot bind", self.interface)

2678

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

2679

" bind", self.interface)

2621

2680

else:

2622

2681

raise

2623

2682

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

2702

2761

request = parent_pipe.recv()

2703

2762

command = request[0]

2704

2763

2705

if command == 'init':

2764

if command == "init":

2706

2765

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

2707

2766

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

2708

2767

address = request[3]

2709

2768

2710

2769

for c in self.clients.values():

2711

if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":

2770

if key_id == ("E3B0C44298FC1C149AFBF4C8996FB924"

2771

"27AE41E4649B934CA495991B7852B855"):

2712

2772

continue

2713

2773

if key_id and c.key_id == key_id:

2714

2774

client = c

2717

2777

client = c

2718

2778

break

2719

2779

else:

2720

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

2721

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

2780

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

2781

" %s", key_id or fpr, address)

2722

2782

if self.use_dbus:

2723

2783

# Emit D-Bus signal

2724

2784

mandos_dbus_service.ClientNotFound(key_id or fpr,

2737

2797

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

2738

2798

# same fileno

2739

2799

return False

2740

if command == 'funcall':

2800

if command == "funcall":

2741

2801

funcname = request[1]

2742

2802

args = request[2]

2743

2803

kwargs = request[3]

2744

2804

2745

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

2805

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

2746

2806

funcname)(*args,

2747

2807

**kwargs)))

2748

2808

2749

if command == 'getattr':

2809

if command == "getattr":

2750

2810

attrname = request[1]

2751

2811

if isinstance(client_object.__getattribute__(attrname),

2752

collections.Callable):

2753

parent_pipe.send(('function', ))

2812

collections.abc.Callable):

2813

parent_pipe.send(("function", ))

2754

2814

else:

2755

2815

parent_pipe.send((

2756

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

2816

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

2757

2817

2758

if command == 'setattr':

2818

if command == "setattr":

2759

2819

attrname = request[1]

2760

2820

value = request[2]

2761

2821

setattr(client_object, attrname, value)

2766

2826

def rfc3339_duration_to_delta(duration):

2767

2827

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

2768

2828

2769

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

2770

True

2771

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

2772

True

2773

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

2774

True

2775

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

2776

True

2777

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

2778

True

2779

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

2780

True

2781

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

2782

True

2829

>>> timedelta = datetime.timedelta

2830

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

2831

True

2832

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

2833

True

2834

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

2835

True

2836

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

2837

True

2838

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

2839

True

2840

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

2841

True

2842

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

2843

True

2844

>>> del timedelta

2783

2845

"""

2784

2846

2785

2847

# Parsing an RFC 3339 duration with regular expressions is not

2865

2927

def string_to_delta(interval):

2866

2928

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

2867

2929

2868

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

2869

True

2870

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

2871

True

2872

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

2873

True

2874

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

2875

True

2876

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

2877

True

2878

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

2930

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

2931

True

2932

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

2933

True

2934

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

2935

True

2936

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

2937

True

2938

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

2939

True

2940

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

2879

2941

True

2880

2942

"""

2881

2943

3085

3147

3086

3148

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

3087

3149

syslogger.setFormatter(

3088

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

3089

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

3150

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

3151

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

3090

3152

server_settings["servicename"])))

3091

3153

3092

3154

# Parse config file with clients

3116

3178

try:

3117

3179

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

3118

3180

except IOError as e:

3119

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

3120

exc_info=e)

3181

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

3182

exc_info=e)

3121

3183

3122

3184

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

3123

3185

("mandos", "mandos"),

3134

3196

try:

3135

3197

os.setgid(gid)

3136

3198

os.setuid(uid)

3137

if debug:

3138

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

3139

gid))

3199

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

3140

3200

except OSError as error:

3141

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

3142

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

3201

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

3202

os.strerror(error.errno))

3143

3203

if error.errno != errno.EPERM:

3144

3204

raise

3145

3205

3152

3212

3153

3213

@gnutls.log_func

3154

3214

def debug_gnutls(level, string):

3155

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

3215

log.debug("GnuTLS: %s",

3216

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

3156

3217

3157

3218

gnutls.global_set_log_function(debug_gnutls)

3158

3219

3187

3248

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

3188

3249

do_not_queue=True)

3189

3250

except dbus.exceptions.DBusException as e:

3190

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

3251

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

3191

3252

use_dbus = False

3192

3253

server_settings["use_dbus"] = False

3193

3254

tcp_server.use_dbus = False

3278

3339

os.remove(stored_state_path)

3279

3340

except IOError as e:

3280

3341

if e.errno == errno.ENOENT:

3281

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

3282

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

3342

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

3343

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

3283

3344

else:

3284

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

3285

exc_info=e)

3345

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

3346

exc_info=e)

3286

3347

raise

3287

3348

except EOFError as e:

3288

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

3289

"EOFError:",

3290

exc_info=e)

3349

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

3350

exc_info=e)

3291

3351

3292

3352

with PGPEngine() as pgp:

3293

3353

for client_name, client in clients_data.items():

3320

3380

if client["enabled"]:

3321

3381

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

3322

3382

if not client["last_checked_ok"]:

3323

logger.warning(

3324

"disabling client {} - Client never "

3325

"performed a successful checker".format(

3326

client_name))

3383

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

3384

" never performed a successful"

3385

" checker", client_name)

3327

3386

client["enabled"] = False

3328

3387

elif client["last_checker_status"] != 0:

3329

logger.warning(

3330

"disabling client {} - Client last"

3331

" checker failed with error code"

3332

" {}".format(

3333

client_name,

3334

client["last_checker_status"]))

3388

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

3389

" last checker failed with error"

3390

" code %s", client_name,

3391

client["last_checker_status"])

3335

3392

client["enabled"] = False

3336

3393

else:

3337

3394

client["expires"] = (

3338

3395

datetime.datetime.utcnow()

3339

3396

+ client["timeout"])

3340

logger.debug("Last checker succeeded,"

3341

" keeping {} enabled".format(

3342

client_name))

3397

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

3398

" enabled", client_name)

3343

3399

try:

3344

3400

client["secret"] = pgp.decrypt(

3345

3401

client["encrypted_secret"],

3346

3402

client_settings[client_name]["secret"])

3347

3403

except PGPError:

3348

3404

# If decryption fails, we use secret from new settings

3349

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

3350

client_name))

3405

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

3406

client_name)

3351

3407

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

3352

3408

["secret"])

3353

3409

3367

3423

server_settings=server_settings)

3368

3424

3369

3425

if not tcp_server.clients:

3370

logger.warning("No clients defined")

3426

log.warning("No clients defined")

3371

3427

3372

3428

if not foreground:

3373

3429

if pidfile is not None:

3376

3432

with pidfile:

3377

3433

print(pid, file=pidfile)

3378

3434

except IOError:

3379

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

3380

pidfilename, pid)

3435

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

3436

pidfilename, pid)

3381

3437

del pidfile

3382

3438

del pidfilename

3383

3439

3533

3589

3534

3590

try:

3535

3591

with tempfile.NamedTemporaryFile(

3536

mode='wb',

3592

mode="wb",

3537

3593

suffix=".pickle",

3538

prefix='clients-',

3594

prefix="clients-",

3539

3595

dir=os.path.dirname(stored_state_path),

3540

3596

delete=False) as stored_state:

3541

3597

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

3549

3605

except NameError:

3550

3606

pass

3551

3607

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

3552

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

3553

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

3608

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

3609

os.strerror(e.errno))

3554

3610

else:

3555

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

3556

exc_info=e)

3611

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

3612

exc_info=e)

3557

3613

raise

3558

3614

3559

3615

# Delete all clients, and settings from config

3576

3632

mandos_dbus_service.client_added_signal(client)

3577

3633

# Need to initiate checking of clients

3578

3634

if client.enabled:

3579

client.init_checker()

3635

client.init_checker(randomize_start=True)

3580

3636

3581

3637

tcp_server.enable()

3582

3638

tcp_server.server_activate()

3585

3641

if zeroconf:

3586

3642

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

3587

3643

if use_ipv6:

3588

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

3589

" flowinfo %d, scope_id %d",

3590

*tcp_server.socket.getsockname())

3644

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

3645

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

3591

3646

else: # IPv4

3592

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

3593

*tcp_server.socket.getsockname())

3647

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

3648

*tcp_server.socket.getsockname())

3594

3649

3595

3650

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

3596

3651

3600

3655

try:

3601

3656

service.activate()

3602

3657

except dbus.exceptions.DBusException as error:

3603

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

3658

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

3604

3659

cleanup()

3605

3660

sys.exit(1)

3606

3661

# End of Avahi example code

3611

3666

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

3612

3667

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

3613

3668

3614

logger.debug("Starting main loop")

3669

log.debug("Starting main loop")

3615

3670

main_loop.run()

3616

3671

except AvahiError as error:

3617

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

3672

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

3618

3673

cleanup()

3619

3674

sys.exit(1)

3620

3675

except KeyboardInterrupt:

3621

3676

if debug:

3622

3677

print("", file=sys.stderr)

3623

logger.debug("Server received KeyboardInterrupt")

3624

logger.debug("Server exiting")

3678

log.debug("Server received KeyboardInterrupt")

3679

log.debug("Server exiting")

3625

3680

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

3626

3681

cleanup()

3627

3682

3628

3683

3629

def should_only_run_tests():

3684

def parse_test_args():

3685

# type: () -> argparse.Namespace

3630

3686

parser = argparse.ArgumentParser(add_help=False)

3631

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

3687

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

3688

parser.add_argument("--prefix", )

3632

3689

args, unknown_args = parser.parse_known_args()

3633

run_tests = args.check

3634

if run_tests:

3635

# Remove --check argument from sys.argv

3690

if args.check:

3691

# Remove test options from sys.argv

3636

3692

sys.argv[1:] = unknown_args

3637

return run_tests

3693

return args

3638

3694

3639

3695

# Add all tests from doctest strings

3640

3696

def load_tests(loader, tests, none):

3642

3698

tests.addTests(doctest.DocTestSuite())

3643

3699

return tests

3644

3700

3645

if __name__ == '__main__':

3701

if __name__ == "__main__":

3702

options = parse_test_args()

3646

3703

try:

3647

if should_only_run_tests():

3648

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

3649

unittest.main()

3704

if options.check:

3705

extra_test_prefix = options.prefix

3706

if extra_test_prefix is not None:

3707

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

3708

.result.wasSuccessful()):

3709

sys.exit(1)

3710

class ExtraTestLoader(unittest.TestLoader):

3711

testMethodPrefix = extra_test_prefix

3712

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

3713

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

3714

else:

3715

unittest.main(argv=[""])

3650

3716

else:

3651

3717

main()

3652

3718

finally:

3653

3719

logging.shutdown()

3720

3721

# Local Variables:

3722

# run-tests:

3723

# (lambda (&optional extra)

3724

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

3725

# extra))

3726

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

3727

# (funcall remove-test-window)

3728

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

3729

# run-tests-in-test-buffer:

3730

# (lambda (dir &optional extra)

3731

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

3732

# (setq buffer-read-only nil

3733

# default-directory dir)

3734

# (erase-buffer)

3735

# (compilation-mode))

3736

# (let ((process-result

3737

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

3738

# (process-file-shell-command

3739

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

3740

# (and (numberp process-result)

3741

# (= process-result 0))))

3742

# get-command-line:

3743

# (lambda (&optional extra)

3744

# (let ((quoted-script

3745

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

3746

# (format

3747

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

3748

# quoted-script)))

3749

# get-script-name:

3750

# (lambda ()

3751

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

3752

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

3753

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

3754

# (buffer-file-name))))

3755

# remove-test-window:

3756

# (lambda ()

3757

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

3758

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

3759

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

3760

# (lambda ()

3761

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

3762

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

3763

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

3764

# (display-buffer-overriding-action

3765

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

3766

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

3767

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

3768

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

3769

# eval:

3770

# (progn

3771

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

3772

# (funcall run-tests t)))

3773

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

3774

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

3775

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

3776

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

3777

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

3778

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

3779

# End: