/mandos/trunk : revision 1288

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#!/usr/bin/python

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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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#!/usr/bin/python3 -bI

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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 = "1.8.8"

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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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output = subprocess.check_output(["gpgconf"])

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for line in output.splitlines():

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name, text, path = line.split(b":")

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if name == "gpg":

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if name == b"gpg":

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self.gpg = path

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break

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

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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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def __enter__(self):

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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:

492

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"""

512

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'

529

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

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530

.format(self.name)))

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531

return ret

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532

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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):

551

566

_fields_ = []

552

session_t = ctypes.POINTER(session_int)

567

session_t = ctypes.POINTER(_session_int)

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568

554

569

class certificate_credentials_st(ctypes.Structure):

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570

_fields_ = []

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573

certificate_type_t = ctypes.c_int

559

574

560

575

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)),

577

("size", ctypes.c_uint)]

563

578

564

class openpgp_crt_int(ctypes.Structure):

579

class _openpgp_crt_int(ctypes.Structure):

565

580

_fields_ = []

566

openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)

581

openpgp_crt_t = ctypes.POINTER(_openpgp_crt_int)

567

582

openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h

568

583

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

569

584

credentials_type_t = ctypes.c_int

578

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

918

961

# key_id() and fingerprint() functions

919

962

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

920

963

.replace(" ", ""))

921

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

964

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

965

"").upper()

922

966

.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

923

972

if "secret" in section:

924

973

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

925

974

.encode("utf-8"),

966

1015

self.last_enabled = None

967

1016

self.expires = None

968

1017

969

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

970

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

971

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

1018

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

1019

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

1020

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

972

1021

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

973

1022

datetime.datetime.utcnow())

974

1023

1002

1051

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

1003

1052

# Already enabled

1004

1053

return

1005

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

1006

1054

self.enabled = True

1007

1055

self.last_enabled = datetime.datetime.utcnow()

1008

1056

self.init_checker()

1013

1061

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

1014

1062

return False

1015

1063

if not quiet:

1016

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

1064

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

1017

1065

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

1018

1066

GLib.source_remove(self.disable_initiator_tag)

1019

1067

self.disable_initiator_tag = None

1031

1079

def __del__(self):

1032

1080

self.disable()

1033

1081

1034

def init_checker(self):

1035

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

1036

# and every interval from then on.

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.

1037

1087

if self.checker_initiator_tag is not None:

1038

1088

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

1039

1096

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

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

1043

1106

if self.disable_initiator_tag is not None:

1044

1107

GLib.source_remove(self.disable_initiator_tag)

1045

1108

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()

1109

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

1110

self.disable)

1049

1111

1050

1112

def checker_callback(self, source, condition, connection,

1051

1113

command):

1053

1115

# Read return code from connection (see call_pipe)

1054

1116

returncode = connection.recv()

1055

1117

connection.close()

1056

self.checker.join()

1118

if self.checker is not None:

1119

self.checker.join()

1057

1120

self.checker_callback_tag = None

1058

1121

self.checker = None

1059

1122

1061

1124

self.last_checker_status = returncode

1062

1125

self.last_checker_signal = None

1063

1126

if self.last_checker_status == 0:

1064

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

1065

vars(self))

1127

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

1066

1128

self.checked_ok()

1067

1129

else:

1068

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

1130

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

1069

1131

else:

1070

1132

self.last_checker_status = -1

1071

1133

self.last_checker_signal = -returncode

1072

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

1073

vars(self))

1134

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

1074

1135

return False

1075

1136

1076

1137

def checked_ok(self):

1095

1156

def need_approval(self):

1096

1157

self.last_approval_request = datetime.datetime.utcnow()

1097

1158

1098

def start_checker(self):

1159

def start_checker(self, start_was_randomized=False):

1099

1160

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

1100

1161

1101

1162

If a checker already exists, leave it running and do

1110

1171

# should be.

1111

1172

1112

1173

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

1113

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

1174

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

1114

1175

self.checker.join()

1115

1176

self.checker = None

1116

1177

# Start a new checker if needed

1117

1178

if self.checker is None:

1118

1179

# Escape attributes for the shell

1119

1180

escaped_attrs = {

1120

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

1181

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

1121

1182

for attr in self.runtime_expansions}

1122

1183

try:

1123

1184

command = self.checker_command % escaped_attrs

1124

1185

except TypeError as error:

1125

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

1126

self.checker_command,

1127

exc_info=error)

1186

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

1187

self.checker_command, exc_info=error)

1128

1188

return True # Try again later

1129

1189

self.current_checker_command = command

1130

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

1131

self.name)

1190

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

1132

1191

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

1133

1192

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

1134

1193

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

1153

1212

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

1154

1213

GLib.PRIORITY_DEFAULT, GLib.IO_IN,

1155

1214

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

1156

1226

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

1157

1227

return True

1158

1228

1163

1233

self.checker_callback_tag = None

1164

1234

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

1165

1235

return

1166

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

1236

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

1167

1237

self.checker.terminate()

1168

1238

self.checker = None

1169

1239

1196

1266

func._dbus_name = func.__name__

1197

1267

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

1198

1268

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

1199

func._dbus_get_args_options = {'byte_arrays': byte_arrays}

1269

func._dbus_get_args_options = {"byte_arrays": byte_arrays}

1200

1270

return func

1201

1271

1202

1272

return decorator

1291

1361

1292

1362

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1293

1363

out_signature="s",

1294

path_keyword='object_path',

1295

connection_keyword='connection')

1364

path_keyword="object_path",

1365

connection_keyword="connection")

1296

1366

def Introspect(self, object_path, connection):

1297

1367

"""Overloading of standard D-Bus method.

1298

1368

1347

1417

document.unlink()

1348

1418

except (AttributeError, xml.dom.DOMException,

1349

1419

xml.parsers.expat.ExpatError) as error:

1350

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

1351

exc_info=error)

1420

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

1421

exc_info=error)

1352

1422

return xmlstring

1353

1423

1354

1424

1412

1482

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

1413

1483

"'ay' signature {!r}"

1414

1484

.format(prop._dbus_signature))

1415

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

1416

for byte in value))

1485

value = dbus.ByteArray(bytes(value))

1417

1486

prop(value)

1418

1487

1419

1488

@dbus.service.method(dbus.PROPERTIES_IFACE,

1452

1521

1453

1522

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1454

1523

out_signature="s",

1455

path_keyword='object_path',

1456

connection_keyword='connection')

1524

path_keyword="object_path",

1525

connection_keyword="connection")

1457

1526

def Introspect(self, object_path, connection):

1458

1527

"""Overloading of standard D-Bus method.

1459

1528

1515

1584

document.unlink()

1516

1585

except (AttributeError, xml.dom.DOMException,

1517

1586

xml.parsers.expat.ExpatError) as error:

1518

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

1519

exc_info=error)

1587

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

1588

exc_info=error)

1520

1589

return xmlstring

1521

1590

1522

1591

1554

1623

1555

1624

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1556

1625

out_signature="s",

1557

path_keyword='object_path',

1558

connection_keyword='connection')

1626

path_keyword="object_path",

1627

connection_keyword="connection")

1559

1628

def Introspect(self, object_path, connection):

1560

1629

"""Overloading of standard D-Bus method.

1561

1630

1586

1655

document.unlink()

1587

1656

except (AttributeError, xml.dom.DOMException,

1588

1657

xml.parsers.expat.ExpatError) as error:

1589

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

1590

exc_info=error)

1658

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

1659

exc_info=error)

1591

1660

return xmlstring

1592

1661

1593

1662

2227

2296

class ProxyClient:

2228

2297

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

2229

2298

self._pipe = child_pipe

2230

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

2299

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

2231

2300

if not self._pipe.recv():

2232

2301

raise KeyError(key_id or fpr)

2233

2302

2234

2303

def __getattribute__(self, name):

2235

if name == '_pipe':

2304

if name == "_pipe":

2236

2305

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

2237

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

2306

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

2238

2307

data = self._pipe.recv()

2239

if data[0] == 'data':

2308

if data[0] == "data":

2240

2309

return data[1]

2241

if data[0] == 'function':

2310

if data[0] == "function":

2242

2311

2243

2312

def func(*args, **kwargs):

2244

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

2313

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

2245

2314

return self._pipe.recv()[1]

2246

2315

2247

2316

return func

2248

2317

2249

2318

def __setattr__(self, name, value):

2250

if name == '_pipe':

2319

if name == "_pipe":

2251

2320

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

2252

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

2321

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

2253

2322

2254

2323

2255

2324

class ClientHandler(socketserver.BaseRequestHandler, object):

2260

2329

2261

2330

def handle(self):

2262

2331

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

2263

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

2264

str(self.client_address))

2265

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

2266

self.server.child_pipe.fileno())

2332

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

2333

str(self.client_address))

2334

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

2267

2335

2268

2336

session = gnutls.ClientSession(self.request)

2269

2337

2270

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

2338

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

2271

2339

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

2272

2340

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

2273

2341

# "+DHE-DSS"))

2275

2343

priority = self.server.gnutls_priority

2276

2344

if priority is None:

2277

2345

priority = "NORMAL"

2278

gnutls.priority_set_direct(session._c_object,

2279

priority.encode("utf-8"),

2280

None)

2346

gnutls.priority_set_direct(session,

2347

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

2281

2348

2282

2349

# Start communication using the Mandos protocol

2283

2350

# Get protocol number

2284

2351

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

2285

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

2352

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

2286

2353

try:

2287

2354

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

2288

2355

raise RuntimeError(line)

2289

2356

except (ValueError, IndexError, RuntimeError) as error:

2290

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

2357

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

2291

2358

return

2292

2359

2293

2360

# Start GnuTLS connection

2294

2361

try:

2295

2362

session.handshake()

2296

2363

except gnutls.Error as error:

2297

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

2364

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

2298

2365

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

2299

2366

# established. Just abandon the request.

2300

2367

return

2301

logger.debug("Handshake succeeded")

2368

log.debug("Handshake succeeded")

2302

2369

2303

2370

approval_required = False

2304

2371

try:

2308

2375

key_id = self.key_id(

2309

2376

self.peer_certificate(session))

2310

2377

except (TypeError, gnutls.Error) as error:

2311

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

2378

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

2312

2379

return

2313

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

2380

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

2381

key_id.decode("utf-8",

2382

errors="replace"))

2314

2383

2315

2384

else:

2316

2385

key_id = b""

2318

2387

fpr = self.fingerprint(

2319

2388

self.peer_certificate(session))

2320

2389

except (TypeError, gnutls.Error) as error:

2321

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

2390

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

2322

2391

return

2323

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

2392

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

2324

2393

2325

2394

try:

2326

2395

client = ProxyClient(child_pipe, key_id, fpr,

2335

2404

2336

2405

while True:

2337

2406

if not client.enabled:

2338

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

2339

client.name)

2407

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

2340

2408

if self.server.use_dbus:

2341

2409

# Emit D-Bus signal

2342

2410

client.Rejected("Disabled")

2346

2414

# We are approved or approval is disabled

2347

2415

break

2348

2416

elif client.approved is None:

2349

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

2350

client.name)

2417

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

2418

client.name)

2351

2419

if self.server.use_dbus:

2352

2420

# Emit D-Bus signal

2353

2421

client.NeedApproval(

2354

2422

client.approval_delay.total_seconds()

2355

2423

* 1000, client.approved_by_default)

2356

2424

else:

2357

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

2358

client.name)

2425

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

2426

client.name)

2359

2427

if self.server.use_dbus:

2360

2428

# Emit D-Bus signal

2361

2429

client.Rejected("Denied")

2369

2437

time2 = datetime.datetime.now()

2370

2438

if (time2 - time) >= delay:

2371

2439

if not client.approved_by_default:

2372

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

2373

" waiting for approval",

2374

client.name)

2440

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

2441

" waiting for approval",

2442

client.name)

2375

2443

if self.server.use_dbus:

2376

2444

# Emit D-Bus signal

2377

2445

client.Rejected("Approval timed out")

2384

2452

try:

2385

2453

session.send(client.secret)

2386

2454

except gnutls.Error as error:

2387

logger.warning("gnutls send failed",

2388

exc_info=error)

2455

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

2389

2456

return

2390

2457

2391

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

2458

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

2392

2459

# bump the timeout using extended_timeout

2393

2460

client.bump_timeout(client.extended_timeout)

2394

2461

if self.server.use_dbus:

2401

2468

try:

2402

2469

session.bye()

2403

2470

except gnutls.Error as error:

2404

logger.warning("GnuTLS bye failed",

2405

exc_info=error)

2471

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

2406

2472

2407

2473

@staticmethod

2408

2474

def peer_certificate(session):

2409

2475

"Return the peer's certificate as a bytestring"

2410

2476

try:

2411

cert_type = gnutls.certificate_type_get2(session._c_object,

2412

gnutls.CTYPE_PEERS)

2477

cert_type = gnutls.certificate_type_get2(

2478

session, gnutls.CTYPE_PEERS)

2413

2479

except AttributeError:

2414

cert_type = gnutls.certificate_type_get(session._c_object)

2480

cert_type = gnutls.certificate_type_get(session)

2415

2481

if gnutls.has_rawpk:

2416

2482

valid_cert_types = frozenset((gnutls.CRT_RAWPK,))

2417

2483

else:

2418

2484

valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))

2419

2485

# If not a valid certificate type...

2420

2486

if cert_type not in valid_cert_types:

2421

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

2422

valid_cert_types)

2487

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

2488

valid_cert_types)

2423

2489

# ...return invalid data

2424

2490

return b""

2425

2491

list_size = ctypes.c_uint(1)

2426

2492

cert_list = (gnutls.certificate_get_peers

2427

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

2493

(session, ctypes.byref(list_size)))

2428

2494

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

2429

2495

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

2430

2496

if list_size.value == 0:

2452

2518

buf = ctypes.create_string_buffer(32)

2453

2519

buf_len = ctypes.c_size_t(len(buf))

2454

2520

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

2455

gnutls.pubkey_get_key_id(pubkey,

2456

gnutls.KEYID_USE_SHA256,

2457

ctypes.cast(ctypes.byref(buf),

2458

ctypes.POINTER(ctypes.c_ubyte)),

2459

ctypes.byref(buf_len))

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))

2460

2527

# Deinit the certificate

2461

2528

gnutls.pubkey_deinit(pubkey)

2462

2529

2543

2610

2544

2611

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

2545

2612

socketserver.TCPServer):

2546

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

2613

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

2547

2614

2548

2615

Attributes:

2549

2616

enabled: Boolean; whether this server is activated yet

2600

2667

if SO_BINDTODEVICE is None:

2601

2668

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

2602

2669

# common enough.

2603

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

2670

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

2604

2671

SO_BINDTODEVICE = 25

2605

2672

try:

2606

2673

self.socket.setsockopt(

2608

2675

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

2609

2676

except socket.error as error:

2610

2677

if error.errno == errno.EPERM:

2611

logger.error("No permission to bind to"

2612

" interface %s", self.interface)

2678

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

2679

self.interface)

2613

2680

elif error.errno == errno.ENOPROTOOPT:

2614

logger.error("SO_BINDTODEVICE not available;"

2615

" cannot bind to interface %s",

2616

self.interface)

2681

log.error("SO_BINDTODEVICE not available; cannot"

2682

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

2617

2683

elif error.errno == errno.ENODEV:

2618

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

2619

" cannot bind", self.interface)

2684

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

2685

" bind", self.interface)

2620

2686

else:

2621

2687

raise

2622

2688

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

2701

2767

request = parent_pipe.recv()

2702

2768

command = request[0]

2703

2769

2704

if command == 'init':

2770

if command == "init":

2705

2771

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

2706

2772

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

2707

2773

address = request[3]

2708

2774

2709

2775

for c in self.clients.values():

2710

if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":

2776

if key_id == ("E3B0C44298FC1C149AFBF4C8996FB924"

2777

"27AE41E4649B934CA495991B7852B855"):

2711

2778

continue

2712

2779

if key_id and c.key_id == key_id:

2713

2780

client = c

2716

2783

client = c

2717

2784

break

2718

2785

else:

2719

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

2720

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

2786

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

2787

" %s", key_id or fpr, address)

2721

2788

if self.use_dbus:

2722

2789

# Emit D-Bus signal

2723

2790

mandos_dbus_service.ClientNotFound(key_id or fpr,

2736

2803

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

2737

2804

# same fileno

2738

2805

return False

2739

if command == 'funcall':

2806

if command == "funcall":

2740

2807

funcname = request[1]

2741

2808

args = request[2]

2742

2809

kwargs = request[3]

2743

2810

2744

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

2811

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

2745

2812

funcname)(*args,

2746

2813

**kwargs)))

2747

2814

2748

if command == 'getattr':

2815

if command == "getattr":

2749

2816

attrname = request[1]

2750

2817

if isinstance(client_object.__getattribute__(attrname),

2751

collections.Callable):

2752

parent_pipe.send(('function', ))

2818

collections.abc.Callable):

2819

parent_pipe.send(("function", ))

2753

2820

else:

2754

2821

parent_pipe.send((

2755

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

2822

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

2756

2823

2757

if command == 'setattr':

2824

if command == "setattr":

2758

2825

attrname = request[1]

2759

2826

value = request[2]

2760

2827

setattr(client_object, attrname, value)

2765

2832

def rfc3339_duration_to_delta(duration):

2766

2833

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

2767

2834

2768

>>> rfc3339_duration_to_delta("P7D")

2769

datetime.timedelta(7)

2770

>>> rfc3339_duration_to_delta("PT60S")

2771

datetime.timedelta(0, 60)

2772

>>> rfc3339_duration_to_delta("PT60M")

2773

datetime.timedelta(0, 3600)

2774

>>> rfc3339_duration_to_delta("PT24H")

2775

datetime.timedelta(1)

2776

>>> rfc3339_duration_to_delta("P1W")

2777

datetime.timedelta(7)

2778

>>> rfc3339_duration_to_delta("PT5M30S")

2779

datetime.timedelta(0, 330)

2780

>>> rfc3339_duration_to_delta("P1DT3M20S")

2781

datetime.timedelta(1, 200)

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

2782

2851

"""

2783

2852

2784

2853

# Parsing an RFC 3339 duration with regular expressions is not

2864

2933

def string_to_delta(interval):

2865

2934

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

2866

2935

2867

>>> string_to_delta('7d')

2868

datetime.timedelta(7)

2869

>>> string_to_delta('60s')

2870

datetime.timedelta(0, 60)

2871

>>> string_to_delta('60m')

2872

datetime.timedelta(0, 3600)

2873

>>> string_to_delta('24h')

2874

datetime.timedelta(1)

2875

>>> string_to_delta('1w')

2876

datetime.timedelta(7)

2877

>>> string_to_delta('5m 30s')

2878

datetime.timedelta(0, 330)

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)

2947

True

2879

2948

"""

2880

2949

2881

2950

try:

3084

3153

3085

3154

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

3086

3155

syslogger.setFormatter(

3087

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

3088

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

3156

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

3157

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

3089

3158

server_settings["servicename"])))

3090

3159

3091

3160

# Parse config file with clients

3115

3184

try:

3116

3185

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

3117

3186

except IOError as e:

3118

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

3119

exc_info=e)

3187

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

3188

exc_info=e)

3120

3189

3121

3190

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

3122

3191

("mandos", "mandos"),

3133

3202

try:

3134

3203

os.setgid(gid)

3135

3204

os.setuid(uid)

3136

if debug:

3137

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

3138

gid))

3205

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

3139

3206

except OSError as error:

3140

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

3141

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

3207

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

3208

os.strerror(error.errno))

3142

3209

if error.errno != errno.EPERM:

3143

3210

raise

3144

3211

3151

3218

3152

3219

@gnutls.log_func

3153

3220

def debug_gnutls(level, string):

3154

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

3221

log.debug("GnuTLS: %s",

3222

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

3155

3223

3156

3224

gnutls.global_set_log_function(debug_gnutls)

3157

3225

3186

3254

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

3187

3255

do_not_queue=True)

3188

3256

except dbus.exceptions.DBusException as e:

3189

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

3257

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

3190

3258

use_dbus = False

3191

3259

server_settings["use_dbus"] = False

3192

3260

tcp_server.use_dbus = False

3251

3319

if isinstance(s, bytes)

3252

3320

else s) for s in

3253

3321

value["client_structure"]]

3254

# .name & .host

3255

for k in ("name", "host"):

3322

# .name, .host, and .checker_command

3323

for k in ("name", "host", "checker_command"):

3256

3324

if isinstance(value[k], bytes):

3257

3325

value[k] = value[k].decode("utf-8")

3258

3326

if "key_id" not in value:

3268

3336

for key, value in

3269

3337

bytes_old_client_settings.items()}

3270

3338

del bytes_old_client_settings

3271

# .host

3339

# .host and .checker_command

3272

3340

for value in old_client_settings.values():

3273

if isinstance(value["host"], bytes):

3274

value["host"] = (value["host"]

3275

.decode("utf-8"))

3341

for attribute in ("host", "checker_command"):

3342

if isinstance(value[attribute], bytes):

3343

value[attribute] = (value[attribute]

3344

.decode("utf-8"))

3276

3345

os.remove(stored_state_path)

3277

3346

except IOError as e:

3278

3347

if e.errno == errno.ENOENT:

3279

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

3280

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

3348

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

3349

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

3281

3350

else:

3282

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

3283

exc_info=e)

3351

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

3352

exc_info=e)

3284

3353

raise

3285

3354

except EOFError as e:

3286

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

3287

"EOFError:",

3288

exc_info=e)

3355

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

3356

exc_info=e)

3289

3357

3290

3358

with PGPEngine() as pgp:

3291

3359

for client_name, client in clients_data.items():

3318

3386

if client["enabled"]:

3319

3387

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

3320

3388

if not client["last_checked_ok"]:

3321

logger.warning(

3322

"disabling client {} - Client never "

3323

"performed a successful checker".format(

3324

client_name))

3389

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

3390

" never performed a successful"

3391

" checker", client_name)

3325

3392

client["enabled"] = False

3326

3393

elif client["last_checker_status"] != 0:

3327

logger.warning(

3328

"disabling client {} - Client last"

3329

" checker failed with error code"

3330

" {}".format(

3331

client_name,

3332

client["last_checker_status"]))

3394

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

3395

" last checker failed with error"

3396

" code %s", client_name,

3397

client["last_checker_status"])

3333

3398

client["enabled"] = False

3334

3399

else:

3335

3400

client["expires"] = (

3336

3401

datetime.datetime.utcnow()

3337

3402

+ client["timeout"])

3338

logger.debug("Last checker succeeded,"

3339

" keeping {} enabled".format(

3340

client_name))

3403

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

3404

" enabled", client_name)

3341

3405

try:

3342

3406

client["secret"] = pgp.decrypt(

3343

3407

client["encrypted_secret"],

3344

3408

client_settings[client_name]["secret"])

3345

3409

except PGPError:

3346

3410

# If decryption fails, we use secret from new settings

3347

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

3348

client_name))

3411

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

3412

client_name)

3349

3413

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

3350

3414

["secret"])

3351

3415

3365

3429

server_settings=server_settings)

3366

3430

3367

3431

if not tcp_server.clients:

3368

logger.warning("No clients defined")

3432

log.warning("No clients defined")

3369

3433

3370

3434

if not foreground:

3371

3435

if pidfile is not None:

3374

3438

with pidfile:

3375

3439

print(pid, file=pidfile)

3376

3440

except IOError:

3377

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

3378

pidfilename, pid)

3441

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

3442

pidfilename, pid)

3379

3443

del pidfile

3380

3444

del pidfilename

3381

3445

3531

3595

3532

3596

try:

3533

3597

with tempfile.NamedTemporaryFile(

3534

mode='wb',

3598

mode="wb",

3535

3599

suffix=".pickle",

3536

prefix='clients-',

3600

prefix="clients-",

3537

3601

dir=os.path.dirname(stored_state_path),

3538

3602

delete=False) as stored_state:

3539

3603

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

3547

3611

except NameError:

3548

3612

pass

3549

3613

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

3550

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

3551

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

3614

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

3615

os.strerror(e.errno))

3552

3616

else:

3553

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

3554

exc_info=e)

3617

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

3618

exc_info=e)

3555

3619

raise

3556

3620

3557

3621

# Delete all clients, and settings from config

3574

3638

mandos_dbus_service.client_added_signal(client)

3575

3639

# Need to initiate checking of clients

3576

3640

if client.enabled:

3577

client.init_checker()

3641

client.init_checker(randomize_start=True)

3578

3642

3579

3643

tcp_server.enable()

3580

3644

tcp_server.server_activate()

3583

3647

if zeroconf:

3584

3648

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

3585

3649

if use_ipv6:

3586

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

3587

" flowinfo %d, scope_id %d",

3588

*tcp_server.socket.getsockname())

3650

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

3651

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

3589

3652

else: # IPv4

3590

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

3591

*tcp_server.socket.getsockname())

3653

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

3654

*tcp_server.socket.getsockname())

3592

3655

3593

3656

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

3594

3657

3598

3661

try:

3599

3662

service.activate()

3600

3663

except dbus.exceptions.DBusException as error:

3601

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

3664

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

3602

3665

cleanup()

3603

3666

sys.exit(1)

3604

3667

# End of Avahi example code

3609

3672

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

3610

3673

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

3611

3674

3612

logger.debug("Starting main loop")

3675

log.debug("Starting main loop")

3613

3676

main_loop.run()

3614

3677

except AvahiError as error:

3615

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

3678

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

3616

3679

cleanup()

3617

3680

sys.exit(1)

3618

3681

except KeyboardInterrupt:

3619

3682

if debug:

3620

3683

print("", file=sys.stderr)

3621

logger.debug("Server received KeyboardInterrupt")

3622

logger.debug("Server exiting")

3684

log.debug("Server received KeyboardInterrupt")

3685

log.debug("Server exiting")

3623

3686

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

3624

3687

cleanup()

3625

3688

3626

3689

3627

def should_only_run_tests():

3690

def parse_test_args():

3691

# type: () -> argparse.Namespace

3628

3692

parser = argparse.ArgumentParser(add_help=False)

3629

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

3693

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

3694

parser.add_argument("--prefix", )

3630

3695

args, unknown_args = parser.parse_known_args()

3631

run_tests = args.check

3632

if run_tests:

3633

# Remove --check argument from sys.argv

3696

if args.check:

3697

# Remove test options from sys.argv

3634

3698

sys.argv[1:] = unknown_args

3635

return run_tests

3699

return args

3636

3700

3637

3701

# Add all tests from doctest strings

3638

3702

def load_tests(loader, tests, none):

3640

3704

tests.addTests(doctest.DocTestSuite())

3641

3705

return tests

3642

3706

3643

if __name__ == '__main__':

3707

if __name__ == "__main__":

3708

options = parse_test_args()

3644

3709

try:

3645

if should_only_run_tests():

3646

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

3647

unittest.main()

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=[""])

3648

3722

else:

3649

3723

main()

3650

3724

finally:

3651

3725

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: