/mandos/release : revision 237.7.77

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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 program is free software: you can redistribute it and/or modify

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# it under the terms of the GNU General Public License as published by

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from __future__ import (division, absolute_import, print_function,

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unicode_literals)

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from future_builtins import *

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import SocketServer as socketserver

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import socket

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import argparse

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import types

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import binascii

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import tempfile

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import itertools

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import dbus

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import dbus.service

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except ImportError:

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SO_BINDTODEVICE = None

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version = "1.5.5"

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version = "1.4.1"

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stored_state_file = "clients.pickle"

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logger = logging.getLogger()

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return interface_index

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def initlogger(debug, level=logging.WARNING):

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def initlogger(level=logging.WARNING):

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"""init logger and add loglevel"""

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syslogger.setFormatter(logging.Formatter

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' %(message)s'))

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logger.addHandler(syslogger)

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if debug:

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console = logging.StreamHandler()

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

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' [%(process)d]:'

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' %(levelname)s:'

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' %(message)s'))

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logger.addHandler(console)

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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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self.gnupg.options.meta_interactive = False

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self.gnupg.options.homedir = self.tempdir

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self.gnupg.options.extra_args.extend(['--force-mdc',

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'--quiet',

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'--no-use-agent'])

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'--quiet'])

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def __enter__(self):

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return self

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def __exit__(self, exc_type, exc_value, traceback):

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def __exit__ (self, exc_type, exc_value, traceback):

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self._cleanup()

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return False

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def encrypt(self, data, password):

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self.gnupg.passphrase = self.password_encode(password)

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with open(os.devnull, "w") as devnull:

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with open(os.devnull) as devnull:

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try:

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proc = self.gnupg.run(['--symmetric'],

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create_fhs=['stdin', 'stdout'],

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def decrypt(self, data, password):

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self.gnupg.passphrase = self.password_encode(password)

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with open(os.devnull, "w") as devnull:

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with open(os.devnull) as devnull:

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try:

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proc = self.gnupg.run(['--decrypt'],

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create_fhs=['stdin', 'stdout'],

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attach_fhs={'stderr': devnull})

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with contextlib.closing(proc.handles['stdin']) as f:

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with contextlib.closing(proc.handles['stdin'] ) as f:

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f.write(data)

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with contextlib.closing(proc.handles['stdout']) as f:

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decrypted_plaintext = f.read()

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return decrypted_plaintext

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class AvahiError(Exception):

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def __init__(self, value, *args, **kwargs):

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self.value = value

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server: D-Bus Server

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bus: dbus.SystemBus()

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"""

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def __init__(self, interface = avahi.IF_UNSPEC, name = None,

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servicetype = None, port = None, TXT = None,

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domain = "", host = "", max_renames = 32768,

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self.server = None

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self.bus = bus

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self.entry_group_state_changed_match = None

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def rename(self):

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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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try:

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self.add()

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except dbus.exceptions.DBusException as error:

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

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logger.critical("DBusException: %s", error)

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self.cleanup()

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os._exit(1)

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self.rename_count += 1

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def remove(self):

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

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if self.entry_group_state_changed_match is not None:

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self.entry_group_state_changed_match = None

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if self.group is not None:

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self.group.Reset()

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def add(self):

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

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self.remove()

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dbus.UInt16(self.port),

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avahi.string_array_to_txt_array(self.TXT))

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self.group.Commit()

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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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elif state == avahi.ENTRY_GROUP_FAILURE:

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

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unicode(error))

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raise AvahiGroupError("State changed: {0!s}"

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.format(error))

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raise AvahiGroupError("State changed: %s"

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% unicode(error))

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def cleanup(self):

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

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if self.group is not None:

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pass

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self.group = None

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self.remove()

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

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

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

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logger.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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def activate(self):

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

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if self.server is None:

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self.server_state_changed)

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self.server_state_changed(self.server.GetState())

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class AvahiServiceToSyslog(AvahiService):

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def rename(self):

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

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ret = AvahiService.rename(self)

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syslogger.setFormatter(logging.Formatter

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('Mandos ({0}) [%(process)d]:'

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

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.format(self.name)))

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

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

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% self.name))

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return ret

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def timedelta_to_milliseconds(td):

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"Convert a datetime.timedelta() to milliseconds"

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return ((td.days * 24 * 60 * 60 * 1000)

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+ (td.seconds * 1000)

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+ (td.microseconds // 1000))

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class Client(object):

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

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last_checked_ok: datetime.datetime(); (UTC) or None

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last_checker_status: integer between 0 and 255 reflecting exit

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status of last checker. -1 reflects crashed

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checker, -2 means no checker completed yet.

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checker, or None.

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last_enabled: datetime.datetime(); (UTC) or None

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name: string; from the config file, used in log messages and

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D-Bus identifiers

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secret: bytestring; sent verbatim (over TLS) to client

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timeout: datetime.timedelta(); How long from last_checked_ok

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until this client is disabled

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extended_timeout: extra long timeout when secret has been sent

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extended_timeout: extra long timeout when password has been sent

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runtime_expansions: Allowed attributes for runtime expansion.

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expires: datetime.datetime(); time (UTC) when a client will be

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disabled, or None

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"""

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runtime_expansions = ("approval_delay", "approval_duration",

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"created", "enabled", "expires",

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"fingerprint", "host", "interval",

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"last_approval_request", "last_checked_ok",

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"created", "enabled", "fingerprint",

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"host", "interval", "last_checked_ok",

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"last_enabled", "name", "timeout")

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client_defaults = { "timeout": "5m",

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"extended_timeout": "15m",

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def approval_delay_milliseconds(self):

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return timedelta_to_milliseconds(self.approval_delay)

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@staticmethod

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def config_parser(config):

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"""Construct a new dict of client settings of this form:

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""" Construct a new dict of client settings of this form:

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{ client_name: {setting_name: value, ...}, ...}

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with exceptions for any special settings as defined above.

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NOTE: Must be a pure function. Must return the same result

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value given the same arguments.

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"""

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with exceptions for any special settings as defined above"""

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settings = {}

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for client_name in config.sections():

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section = dict(config.items(client_name))

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# Reformat values from string types to Python types

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client["approved_by_default"] = config.getboolean(

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client_name, "approved_by_default")

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client["enabled"] = config.getboolean(client_name,

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"enabled")

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client["enabled"] = config.getboolean(client_name, "enabled")

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

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.replace(" ", ""))

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"rb") as secfile:

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client["secret"] = secfile.read()

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else:

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raise TypeError("No secret or secfile for section {0}"

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.format(section))

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raise TypeError("No secret or secfile for section %s"

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% section)

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client["timeout"] = string_to_delta(section["timeout"])

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client["extended_timeout"] = string_to_delta(

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section["extended_timeout"])

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client["checker_command"] = section["checker"]

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client["last_approval_request"] = None

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client["last_checked_ok"] = None

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client["last_checker_status"] = -2

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client["last_checker_status"] = None

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if client["enabled"]:

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client["last_enabled"] = datetime.datetime.utcnow()

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client["expires"] = (datetime.datetime.utcnow()

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+ client["timeout"])

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else:

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client["last_enabled"] = None

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client["expires"] = None

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return settings

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def __init__(self, settings, name = None):

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"""Note: the 'checker' key in 'config' sets the

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'checker_command' attribute and *not* the 'checker'

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attribute."""

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self.name = name

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# adding all client settings

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for setting, value in settings.iteritems():

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setattr(self, setting, value)

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if self.enabled:

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if not hasattr(self, "last_enabled"):

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self.last_enabled = datetime.datetime.utcnow()

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if not hasattr(self, "expires"):

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

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+ self.timeout)

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else:

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self.last_enabled = None

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self.expires = None

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

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# Uppercase and remove spaces from fingerprint for later

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# comparison purposes with return value from the fingerprint()

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# function

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

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

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datetime.datetime.utcnow())

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self.created = settings.get("created", datetime.datetime.utcnow())

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# attributes specific for this server instance

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self.checker = None

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self.checker_initiator_tag = None

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

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# Already enabled

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return

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self.send_changedstate()

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

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self.enabled = True

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self.last_enabled = datetime.datetime.utcnow()

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self.init_checker()

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self.send_changedstate()

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def disable(self, quiet=True):

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"""Disable this client."""

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

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return False

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if not quiet:

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self.send_changedstate()

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if not quiet:

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

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

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

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gobject.source_remove(self.disable_initiator_tag)

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self.disable_initiator_tag = None

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self.expires = None

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

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

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gobject.source_remove(self.checker_initiator_tag)

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self.checker_initiator_tag = None

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self.stop_checker()

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self.enabled = False

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if not quiet:

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self.send_changedstate()

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# Do not run this again if called by a gobject.timeout_add

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return False

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def init_checker(self):

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

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# and every interval from then on.

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if self.checker_initiator_tag is not None:

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gobject.source_remove(self.checker_initiator_tag)

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self.checker_initiator_tag = (gobject.timeout_add

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(self.interval_milliseconds(),

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self.start_checker))

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

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if self.disable_initiator_tag is not None:

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gobject.source_remove(self.disable_initiator_tag)

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self.disable_initiator_tag = (gobject.timeout_add

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(self.timeout_milliseconds(),

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self.disable))

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

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vars(self))

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def checked_ok(self):

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"""Assert that the client has been seen, alive and well."""

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self.last_checked_ok = datetime.datetime.utcnow()

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self.last_checker_status = 0

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self.bump_timeout()

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def bump_timeout(self, timeout=None):

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"""Bump up the timeout for this client."""

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def checked_ok(self, timeout=None):

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"""Bump up the timeout for this client.

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This should only be called when the client has been seen,

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alive and well.

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"""

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if timeout is None:

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timeout = self.timeout

627

self.last_checked_ok = datetime.datetime.utcnow()

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if self.disable_initiator_tag is not None:

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gobject.source_remove(self.disable_initiator_tag)

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self.disable_initiator_tag = None

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

657

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self.disable_initiator_tag = (gobject.timeout_add

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(timedelta_to_milliseconds

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642

If a checker already exists, leave it running and do

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nothing."""

670

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# The reason for not killing a running checker is that if we

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# did that, and if a checker (for some reason) started running

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# slowly and taking more than 'interval' time, then the client

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# would inevitably timeout, since no checker would get a

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# chance to run to completion. If we instead leave running

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# did that, then if a checker (for some reason) started

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# running slowly and taking more than 'interval' time, the

647

# client would inevitably timeout, since no checker would get

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# a chance to run to completion. If we instead leave running

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# checkers alone, the checker would have to take more time

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# than 'timeout' for the client to be disabled, which is as it

677

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# should be.

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self.current_checker_command)

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# Start a new checker if needed

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if self.checker is None:

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# Escape attributes for the shell

695

escaped_attrs = dict(

696

(attr, re.escape(unicode(getattr(self, attr))))

697

for attr in

698

self.runtime_expansions)

699

668

try:

700

command = self.checker_command % escaped_attrs

701

except TypeError as error:

702

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

703

self.checker_command, exc_info=error)

704

return True # Try again later

669

# In case checker_command has exactly one % operator

670

command = self.checker_command % self.host

671

except TypeError:

672

# Escape attributes for the shell

673

escaped_attrs = dict(

674

(attr,

675

re.escape(unicode(str(getattr(self, attr, "")),

676

errors=

677

'replace')))

678

for attr in

679

self.runtime_expansions)

680

681

try:

682

command = self.checker_command % escaped_attrs

683

except TypeError as error:

684

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

685

' %s', self.checker_command, error)

686

return True # Try again later

705

687

self.current_checker_command = command

706

688

try:

707

689

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

713

695

self.checker = subprocess.Popen(command,

714

696

close_fds=True,

715

697

shell=True, cwd="/")

698

self.checker_callback_tag = (gobject.child_watch_add

699

(self.checker.pid,

700

self.checker_callback,

701

data=command))

702

# The checker may have completed before the gobject

703

# watch was added. Check for this.

704

pid, status = os.waitpid(self.checker.pid, os.WNOHANG)

705

if pid:

706

gobject.source_remove(self.checker_callback_tag)

707

self.checker_callback(pid, status, command)

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708

except OSError as error:

717

logger.error("Failed to start subprocess",

718

exc_info=error)

719

self.checker_callback_tag = (gobject.child_watch_add

720

(self.checker.pid,

721

self.checker_callback,

722

data=command))

723

# The checker may have completed before the gobject

724

# watch was added. Check for this.

725

pid, status = os.waitpid(self.checker.pid, os.WNOHANG)

726

if pid:

727

gobject.source_remove(self.checker_callback_tag)

728

self.checker_callback(pid, status, command)

709

logger.error("Failed to start subprocess: %s",

710

error)

729

711

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

730

712

return True

731

713

738

720

return

739

721

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

740

722

try:

741

self.checker.terminate()

723

os.kill(self.checker.pid, signal.SIGTERM)

742

724

#time.sleep(0.5)

743

725

#if self.checker.poll() is None:

744

# self.checker.kill()

726

# os.kill(self.checker.pid, signal.SIGKILL)

745

727

except OSError as error:

746

728

if error.errno != errno.ESRCH: # No such process

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729

raise

764

746

# "Set" method, so we fail early here:

765

747

if byte_arrays and signature != "ay":

766

748

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

767

" signature {0!r}".format(signature))

749

" signature %r" % signature)

768

750

def decorator(func):

769

751

func._dbus_is_property = True

770

752

func._dbus_interface = dbus_interface

778

760

return decorator

779

761

780

762

781

def dbus_interface_annotations(dbus_interface):

782

"""Decorator for marking functions returning interface annotations

783

784

Usage:

785

786

@dbus_interface_annotations("org.example.Interface")

787

def _foo(self): # Function name does not matter

788

return {"org.freedesktop.DBus.Deprecated": "true",

789

"org.freedesktop.DBus.Property.EmitsChangedSignal":

790

"false"}

791

"""

792

def decorator(func):

793

func._dbus_is_interface = True

794

func._dbus_interface = dbus_interface

795

func._dbus_name = dbus_interface

796

return func

797

return decorator

798

799

800

def dbus_annotations(annotations):

801

"""Decorator to annotate D-Bus methods, signals or properties

802

Usage:

803

804

@dbus_service_property("org.example.Interface", signature="b",

805

access="r")

806

@dbus_annotations({{"org.freedesktop.DBus.Deprecated": "true",

807

"org.freedesktop.DBus.Property."

808

"EmitsChangedSignal": "false"})

809

def Property_dbus_property(self):

810

return dbus.Boolean(False)

811

"""

812

def decorator(func):

813

func._dbus_annotations = annotations

814

return func

815

return decorator

816

817

818

763

class DBusPropertyException(dbus.exceptions.DBusException):

819

764

"""A base class for D-Bus property-related exceptions

820

765

"""

843

788

"""

844

789

845

790

@staticmethod

846

def _is_dbus_thing(thing):

847

"""Returns a function testing if an attribute is a D-Bus thing

848

849

If called like _is_dbus_thing("method") it returns a function

850

suitable for use as predicate to inspect.getmembers().

851

"""

852

return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),

853

False)

791

def _is_dbus_property(obj):

792

return getattr(obj, "_dbus_is_property", False)

854

793

855

def _get_all_dbus_things(self, thing):

794

def _get_all_dbus_properties(self):

856

795

"""Returns a generator of (name, attribute) pairs

857

796

"""

858

return ((getattr(athing.__get__(self), "_dbus_name",

859

name),

860

athing.__get__(self))

797

return ((prop.__get__(self)._dbus_name, prop.__get__(self))

861

798

for cls in self.__class__.__mro__

862

for name, athing in

863

inspect.getmembers(cls,

864

self._is_dbus_thing(thing)))

799

for name, prop in

800

inspect.getmembers(cls, self._is_dbus_property))

865

801

866

802

def _get_dbus_property(self, interface_name, property_name):

867

803

"""Returns a bound method if one exists which is a D-Bus

869

805

"""

870

806

for cls in self.__class__.__mro__:

871

807

for name, value in (inspect.getmembers

872

(cls,

873

self._is_dbus_thing("property"))):

808

(cls, self._is_dbus_property)):

874

809

if (value._dbus_name == property_name

875

810

and value._dbus_interface == interface_name):

876

811

return value.__get__(self)

905

840

# signatures other than "ay".

906

841

if prop._dbus_signature != "ay":

907

842

raise ValueError

908

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

909

for byte in value))

843

value = dbus.ByteArray(''.join(unichr(byte)

844

for byte in value))

910

845

prop(value)

911

846

912

847

@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",

918

853

Note: Will not include properties with access="write".

919

854

"""

920

855

properties = {}

921

for name, prop in self._get_all_dbus_things("property"):

856

for name, prop in self._get_all_dbus_properties():

922

857

if (interface_name

923

858

and interface_name != prop._dbus_interface):

924

859

# Interface non-empty but did not match

939

874

path_keyword='object_path',

940

875

connection_keyword='connection')

941

876

def Introspect(self, object_path, connection):

942

"""Overloading of standard D-Bus method.

943

944

Inserts property tags and interface annotation tags.

877

"""Standard D-Bus method, overloaded to insert property tags.

945

878

"""

946

879

xmlstring = dbus.service.Object.Introspect(self, object_path,

947

880

connection)

954

887

e.setAttribute("access", prop._dbus_access)

955

888

return e

956

889

for if_tag in document.getElementsByTagName("interface"):

957

# Add property tags

958

890

for tag in (make_tag(document, name, prop)

959

891

for name, prop

960

in self._get_all_dbus_things("property")

892

in self._get_all_dbus_properties()

961

893

if prop._dbus_interface

962

894

== if_tag.getAttribute("name")):

963

895

if_tag.appendChild(tag)

964

# Add annotation tags

965

for typ in ("method", "signal", "property"):

966

for tag in if_tag.getElementsByTagName(typ):

967

annots = dict()

968

for name, prop in (self.

969

_get_all_dbus_things(typ)):

970

if (name == tag.getAttribute("name")

971

and prop._dbus_interface

972

== if_tag.getAttribute("name")):

973

annots.update(getattr

974

(prop,

975

"_dbus_annotations",

976

{}))

977

for name, value in annots.iteritems():

978

ann_tag = document.createElement(

979

"annotation")

980

ann_tag.setAttribute("name", name)

981

ann_tag.setAttribute("value", value)

982

tag.appendChild(ann_tag)

983

# Add interface annotation tags

984

for annotation, value in dict(

985

itertools.chain.from_iterable(

986

annotations().iteritems()

987

for name, annotations in

988

self._get_all_dbus_things("interface")

989

if name == if_tag.getAttribute("name")

990

)).iteritems():

991

ann_tag = document.createElement("annotation")

992

ann_tag.setAttribute("name", annotation)

993

ann_tag.setAttribute("value", value)

994

if_tag.appendChild(ann_tag)

995

896

# Add the names to the return values for the

996

897

# "org.freedesktop.DBus.Properties" methods

997

898

if (if_tag.getAttribute("name")

1012

913

except (AttributeError, xml.dom.DOMException,

1013

914

xml.parsers.expat.ExpatError) as error:

1014

915

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

1015

exc_info=error)

916

error)

1016

917

return xmlstring

1017

918

1018

919

1019

def datetime_to_dbus(dt, variant_level=0):

920

def datetime_to_dbus (dt, variant_level=0):

1020

921

"""Convert a UTC datetime.datetime() to a D-Bus type."""

1021

922

if dt is None:

1022

923

return dbus.String("", variant_level = variant_level)

1024

925

variant_level=variant_level)

1025

926

1026

927

1027

def alternate_dbus_interfaces(alt_interface_names, deprecate=True):

1028

"""A class decorator; applied to a subclass of

1029

dbus.service.Object, it will add alternate D-Bus attributes with

1030

interface names according to the "alt_interface_names" mapping.

1031

Usage:

1032

1033

@alternate_dbus_interfaces({"org.example.Interface":

1034

"net.example.AlternateInterface"})

1035

class SampleDBusObject(dbus.service.Object):

1036

@dbus.service.method("org.example.Interface")

1037

def SampleDBusMethod():

1038

pass

1039

1040

The above "SampleDBusMethod" on "SampleDBusObject" will be

1041

reachable via two interfaces: "org.example.Interface" and

1042

"net.example.AlternateInterface", the latter of which will have

1043

its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to

1044

"true", unless "deprecate" is passed with a False value.

1045

1046

This works for methods and signals, and also for D-Bus properties

1047

(from DBusObjectWithProperties) and interfaces (from the

1048

dbus_interface_annotations decorator).

928

class AlternateDBusNamesMetaclass(DBusObjectWithProperties

929

.__metaclass__):

930

"""Applied to an empty subclass of a D-Bus object, this metaclass

931

will add additional D-Bus attributes matching a certain pattern.

1049

932

"""

1050

def wrapper(cls):

1051

for orig_interface_name, alt_interface_name in (

1052

alt_interface_names.iteritems()):

1053

attr = {}

1054

interface_names = set()

1055

# Go though all attributes of the class

1056

for attrname, attribute in inspect.getmembers(cls):

933

def __new__(mcs, name, bases, attr):

934

# Go through all the base classes which could have D-Bus

935

# methods, signals, or properties in them

936

for base in (b for b in bases

937

if issubclass(b, dbus.service.Object)):

938

# Go though all attributes of the base class

939

for attrname, attribute in inspect.getmembers(base):

1057

940

# Ignore non-D-Bus attributes, and D-Bus attributes

1058

941

# with the wrong interface name

1059

942

if (not hasattr(attribute, "_dbus_interface")

1060

943

or not attribute._dbus_interface

1061

.startswith(orig_interface_name)):

944

.startswith("se.recompile.Mandos")):

1062

945

continue

1063

946

# Create an alternate D-Bus interface name based on

1064

947

# the current name

1065

948

alt_interface = (attribute._dbus_interface

1066

.replace(orig_interface_name,

1067

alt_interface_name))

1068

interface_names.add(alt_interface)

949

.replace("se.recompile.Mandos",

950

"se.bsnet.fukt.Mandos"))

1069

951

# Is this a D-Bus signal?

1070

952

if getattr(attribute, "_dbus_is_signal", False):

1071

953

# Extract the original non-method function by

1086

968

nonmethod_func.func_name,

1087

969

nonmethod_func.func_defaults,

1088

970

nonmethod_func.func_closure)))

1089

# Copy annotations, if any

1090

try:

1091

new_function._dbus_annotations = (

1092

dict(attribute._dbus_annotations))

1093

except AttributeError:

1094

pass

1095

971

# Define a creator of a function to call both the

1096

# original and alternate functions, so both the

1097

# original and alternate signals gets sent when

1098

# the function is called

972

# old and new functions, so both the old and new

973

# signals gets sent when the function is called

1099

974

def fixscope(func1, func2):

1100

975

"""This function is a scope container to pass

1101

976

func1 and func2 to the "call_both" function

1108

983

return call_both

1109

984

# Create the "call_both" function and add it to

1110

985

# the class

1111

attr[attrname] = fixscope(attribute, new_function)

986

attr[attrname] = fixscope(attribute,

987

new_function)

1112

988

# Is this a D-Bus method?

1113

989

elif getattr(attribute, "_dbus_is_method", False):

1114

990

# Create a new, but exactly alike, function

1125

1001

attribute.func_name,

1126

1002

attribute.func_defaults,

1127

1003

attribute.func_closure)))

1128

# Copy annotations, if any

1129

try:

1130

attr[attrname]._dbus_annotations = (

1131

dict(attribute._dbus_annotations))

1132

except AttributeError:

1133

pass

1134

1004

# Is this a D-Bus property?

1135

1005

elif getattr(attribute, "_dbus_is_property", False):

1136

1006

# Create a new, but exactly alike, function

1150

1020

attribute.func_name,

1151

1021

attribute.func_defaults,

1152

1022

attribute.func_closure)))

1153

# Copy annotations, if any

1154

try:

1155

attr[attrname]._dbus_annotations = (

1156

dict(attribute._dbus_annotations))

1157

except AttributeError:

1158

pass

1159

# Is this a D-Bus interface?

1160

elif getattr(attribute, "_dbus_is_interface", False):

1161

# Create a new, but exactly alike, function

1162

# object. Decorate it to be a new D-Bus interface

1163

# with the alternate D-Bus interface name. Add it

1164

# to the class.

1165

attr[attrname] = (dbus_interface_annotations

1166

(alt_interface)

1167

(types.FunctionType

1168

(attribute.func_code,

1169

attribute.func_globals,

1170

attribute.func_name,

1171

attribute.func_defaults,

1172

attribute.func_closure)))

1173

if deprecate:

1174

# Deprecate all alternate interfaces

1175

iname="_AlternateDBusNames_interface_annotation{0}"

1176

for interface_name in interface_names:

1177

@dbus_interface_annotations(interface_name)

1178

def func(self):

1179

return { "org.freedesktop.DBus.Deprecated":

1180

"true" }

1181

# Find an unused name

1182

for aname in (iname.format(i)

1183

for i in itertools.count()):

1184

if aname not in attr:

1185

attr[aname] = func

1186

break

1187

if interface_names:

1188

# Replace the class with a new subclass of it with

1189

# methods, signals, etc. as created above.

1190

cls = type(b"{0}Alternate".format(cls.__name__),

1191

(cls,), attr)

1192

return cls

1193

return wrapper

1194

1195

1196

@alternate_dbus_interfaces({"se.recompile.Mandos":

1197

"se.bsnet.fukt.Mandos"})

1023

return type.__new__(mcs, name, bases, attr)

1024

1025

1198

1026

class ClientDBus(Client, DBusObjectWithProperties):

1199

1027

"""A Client class using D-Bus

1200

1028

1211

1039

def __init__(self, bus = None, *args, **kwargs):

1212

1040

self.bus = bus

1213

1041

Client.__init__(self, *args, **kwargs)

1042

self._approvals_pending = 0

1043

1044

self._approvals_pending = 0

1214

1045

# Only now, when this client is initialized, can it show up on

1215

1046

# the D-Bus

1216

1047

client_object_name = unicode(self.name).translate(

1220

1051

("/clients/" + client_object_name))

1221

1052

DBusObjectWithProperties.__init__(self, self.bus,

1222

1053

self.dbus_object_path)

1223

1054

1224

1055

def notifychangeproperty(transform_func,

1225

1056

dbus_name, type_func=lambda x: x,

1226

1057

variant_level=1):

1249

1080

1250

1081

return property(lambda self: getattr(self, attrname), setter)

1251

1082

1083

1252

1084

expires = notifychangeproperty(datetime_to_dbus, "Expires")

1253

1085

approvals_pending = notifychangeproperty(dbus.Boolean,

1254

1086

"ApprovalPending",

1261

1093

checker is not None)

1262

1094

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1263

1095

"LastCheckedOK")

1264

last_checker_status = notifychangeproperty(dbus.Int16,

1265

"LastCheckerStatus")

1266

1096

last_approval_request = notifychangeproperty(

1267

1097

datetime_to_dbus, "LastApprovalRequest")

1268

1098

approved_by_default = notifychangeproperty(dbus.Boolean,

1336

1166

return False

1337

1167

1338

1168

def approve(self, value=True):

1169

self.send_changedstate()

1339

1170

self.approved = value

1340

1171

gobject.timeout_add(timedelta_to_milliseconds

1341

1172

(self.approval_duration),

1342

1173

self._reset_approved)

1343

self.send_changedstate()

1174

1344

1175

1345

1176

## D-Bus methods, signals & properties

1346

1177

_interface = "se.recompile.Mandos.Client"

1347

1178

1348

## Interfaces

1349

1350

@dbus_interface_annotations(_interface)

1351

def _foo(self):

1352

return { "org.freedesktop.DBus.Property.EmitsChangedSignal":

1353

"false"}

1354

1355

1179

## Signals

1356

1180

1357

1181

# CheckerCompleted - signal

1393

1217

"D-Bus signal"

1394

1218

return self.need_approval()

1395

1219

1220

# NeRwequest - signal

1221

@dbus.service.signal(_interface, signature="s")

1222

def NewRequest(self, ip):

1223

"""D-Bus signal

1224

Is sent after a client request a password.

1225

"""

1226

pass

1227

1396

1228

## Methods

1397

1229

1398

1230

# Approve - method

1508

1340

return

1509

1341

return datetime_to_dbus(self.last_checked_ok)

1510

1342

1511

# LastCheckerStatus - property

1512

@dbus_service_property(_interface, signature="n",

1513

access="read")

1514

def LastCheckerStatus_dbus_property(self):

1515

return dbus.Int16(self.last_checker_status)

1516

1517

1343

# Expires - property

1518

1344

@dbus_service_property(_interface, signature="s", access="read")

1519

1345

def Expires_dbus_property(self):

1530

1356

def Timeout_dbus_property(self, value=None):

1531

1357

if value is None: # get

1532

1358

return dbus.UInt64(self.timeout_milliseconds())

1533

old_timeout = self.timeout

1534

1359

self.timeout = datetime.timedelta(0, 0, 0, value)

1535

# Reschedule disabling

1536

if self.enabled:

1537

now = datetime.datetime.utcnow()

1538

self.expires += self.timeout - old_timeout

1539

if self.expires <= now:

1540

# The timeout has passed

1541

self.disable()

1542

else:

1543

if (getattr(self, "disable_initiator_tag", None)

1544

is None):

1545

return

1546

gobject.source_remove(self.disable_initiator_tag)

1547

self.disable_initiator_tag = (

1548

gobject.timeout_add(

1549

timedelta_to_milliseconds(self.expires - now),

1550

self.disable))

1360

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

1361

return

1362

# Reschedule timeout

1363

gobject.source_remove(self.disable_initiator_tag)

1364

self.disable_initiator_tag = None

1365

self.expires = None

1366

time_to_die = timedelta_to_milliseconds((self

1367

.last_checked_ok

1368

+ self.timeout)

1369

- datetime.datetime

1370

.utcnow())

1371

if time_to_die <= 0:

1372

# The timeout has passed

1373

self.disable()

1374

else:

1375

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

1376

+ datetime.timedelta(milliseconds =

1377

time_to_die))

1378

self.disable_initiator_tag = (gobject.timeout_add

1379

(time_to_die, self.disable))

1551

1380

1552

1381

# ExtendedTimeout - property

1553

1382

@dbus_service_property(_interface, signature="t",

1632

1461

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

1633

1462

1634

1463

1464

class ClientDBusTransitional(ClientDBus):

1465

__metaclass__ = AlternateDBusNamesMetaclass

1466

1467

1635

1468

class ClientHandler(socketserver.BaseRequestHandler, object):

1636

1469

"""A class to handle client connections.

1637

1470

1705

1538

except KeyError:

1706

1539

return

1707

1540

1541

if self.server.use_dbus:

1542

# Emit D-Bus signal

1543

client.NewRequest(str(self.client_address))

1544

1708

1545

if client.approval_delay:

1709

1546

delay = client.approval_delay

1710

1547

client.approvals_pending += 1

1741

1578

#wait until timeout or approved

1742

1579

time = datetime.datetime.now()

1743

1580

client.changedstate.acquire()

1744

client.changedstate.wait(

1745

float(timedelta_to_milliseconds(delay)

1746

/ 1000))

1581

(client.changedstate.wait

1582

(float(client.timedelta_to_milliseconds(delay)

1583

/ 1000)))

1747

1584

client.changedstate.release()

1748

1585

time2 = datetime.datetime.now()

1749

1586

if (time2 - time) >= delay:

1765

1602

try:

1766

1603

sent = session.send(client.secret[sent_size:])

1767

1604

except gnutls.errors.GNUTLSError as error:

1768

logger.warning("gnutls send failed",

1769

exc_info=error)

1605

logger.warning("gnutls send failed")

1770

1606

return

1771

1607

logger.debug("Sent: %d, remaining: %d",

1772

1608

sent, len(client.secret)

1775

1611

1776

1612

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

1777

1613

# bump the timeout using extended_timeout

1778

client.bump_timeout(client.extended_timeout)

1614

client.checked_ok(client.extended_timeout)

1779

1615

if self.server.use_dbus:

1780

1616

# Emit D-Bus signal

1781

1617

client.GotSecret()

1786

1622

try:

1787

1623

session.bye()

1788

1624

except gnutls.errors.GNUTLSError as error:

1789

logger.warning("GnuTLS bye failed",

1790

exc_info=error)

1625

logger.warning("GnuTLS bye failed")

1791

1626

1792

1627

@staticmethod

1793

1628

def peer_certificate(session):

1865

1700

def process_request(self, request, address):

1866

1701

"""Start a new process to process the request."""

1867

1702

proc = multiprocessing.Process(target = self.sub_process_main,

1868

args = (request, address))

1703

args = (request,

1704

address))

1869

1705

proc.start()

1870

1706

return proc

1871

1707

1899

1735

use_ipv6: Boolean; to use IPv6 or not

1900

1736

"""

1901

1737

def __init__(self, server_address, RequestHandlerClass,

1902

interface=None, use_ipv6=True, socketfd=None):

1903

"""If socketfd is set, use that file descriptor instead of

1904

creating a new one with socket.socket().

1905

"""

1738

interface=None, use_ipv6=True):

1906

1739

self.interface = interface

1907

1740

if use_ipv6:

1908

1741

self.address_family = socket.AF_INET6

1909

if socketfd is not None:

1910

# Save the file descriptor

1911

self.socketfd = socketfd

1912

# Save the original socket.socket() function

1913

self.socket_socket = socket.socket

1914

# To implement --socket, we monkey patch socket.socket.

1915

#

1916

# (When socketserver.TCPServer is a new-style class, we

1917

# could make self.socket into a property instead of monkey

1918

# patching socket.socket.)

1919

#

1920

# Create a one-time-only replacement for socket.socket()

1921

@functools.wraps(socket.socket)

1922

def socket_wrapper(*args, **kwargs):

1923

# Restore original function so subsequent calls are

1924

# not affected.

1925

socket.socket = self.socket_socket

1926

del self.socket_socket

1927

# This time only, return a new socket object from the

1928

# saved file descriptor.

1929

return socket.fromfd(self.socketfd, *args, **kwargs)

1930

# Replace socket.socket() function with wrapper

1931

socket.socket = socket_wrapper

1932

# The socketserver.TCPServer.__init__ will call

1933

# socket.socket(), which might be our replacement,

1934

# socket_wrapper(), if socketfd was set.

1935

1742

socketserver.TCPServer.__init__(self, server_address,

1936

1743

RequestHandlerClass)

1937

1938

1744

def server_bind(self):

1939

1745

"""This overrides the normal server_bind() function

1940

1746

to bind to an interface if one was specified, and also NOT to

1948

1754

try:

1949

1755

self.socket.setsockopt(socket.SOL_SOCKET,

1950

1756

SO_BINDTODEVICE,

1951

str(self.interface + '\0'))

1757

str(self.interface

1758

+ '\0'))

1952

1759

except socket.error as error:

1953

if error.errno == errno.EPERM:

1954

logger.error("No permission to bind to"

1955

" interface %s", self.interface)

1956

elif error.errno == errno.ENOPROTOOPT:

1760

if error[0] == errno.EPERM:

1761

logger.error("No permission to"

1762

" bind to interface %s",

1763

self.interface)

1764

elif error[0] == errno.ENOPROTOOPT:

1957

1765

logger.error("SO_BINDTODEVICE not available;"

1958

1766

" cannot bind to interface %s",

1959

1767

self.interface)

1960

elif error.errno == errno.ENODEV:

1961

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

1962

" cannot bind", self.interface)

1963

1768

else:

1964

1769

raise

1965

1770

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

1995

1800

"""

1996

1801

def __init__(self, server_address, RequestHandlerClass,

1997

1802

interface=None, use_ipv6=True, clients=None,

1998

gnutls_priority=None, use_dbus=True, socketfd=None):

1803

gnutls_priority=None, use_dbus=True):

1999

1804

self.enabled = False

2000

1805

self.clients = clients

2001

1806

if self.clients is None:

2005

1810

IPv6_TCPServer.__init__(self, server_address,

2006

1811

RequestHandlerClass,

2007

1812

interface = interface,

2008

use_ipv6 = use_ipv6,

2009

socketfd = socketfd)

1813

use_ipv6 = use_ipv6)

2010

1814

def server_activate(self):

2011

1815

if self.enabled:

2012

1816

return socketserver.TCPServer.server_activate(self)

2025

1829

2026

1830

def handle_ipc(self, source, condition, parent_pipe=None,

2027

1831

proc = None, client_object=None):

1832

condition_names = {

1833

gobject.IO_IN: "IN", # There is data to read.

1834

gobject.IO_OUT: "OUT", # Data can be written (without

1835

# blocking).

1836

gobject.IO_PRI: "PRI", # There is urgent data to read.

1837

gobject.IO_ERR: "ERR", # Error condition.

1838

gobject.IO_HUP: "HUP" # Hung up (the connection has been

1839

# broken, usually for pipes and

1840

# sockets).

1841

}

1842

conditions_string = ' | '.join(name

1843

for cond, name in

1844

condition_names.iteritems()

1845

if cond & condition)

2028

1846

# error, or the other end of multiprocessing.Pipe has closed

2029

if condition & (gobject.IO_ERR | gobject.IO_HUP):

1847

if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):

2030

1848

# Wait for other process to exit

2031

1849

proc.join()

2032

1850

return False

2122

1940

elif suffix == "w":

2123

1941

delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)

2124

1942

else:

2125

raise ValueError("Unknown suffix {0!r}"

2126

.format(suffix))

1943

raise ValueError("Unknown suffix %r" % suffix)

2127

1944

except (ValueError, IndexError) as e:

2128

1945

raise ValueError(*(e.args))

2129

1946

timevalue += delta

2143

1960

sys.exit()

2144

1961

if not noclose:

2145

1962

# Close all standard open file descriptors

2146

null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)

1963

null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)

2147

1964

if not stat.S_ISCHR(os.fstat(null).st_mode):

2148

1965

raise OSError(errno.ENODEV,

2149

"{0} not a character device"

2150

.format(os.devnull))

1966

"%s not a character device"

1967

% os.path.devnull)

2151

1968

os.dup2(null, sys.stdin.fileno())

2152

1969

os.dup2(null, sys.stdout.fileno())

2153

1970

os.dup2(null, sys.stderr.fileno())

2162

1979

2163

1980

parser = argparse.ArgumentParser()

2164

1981

parser.add_argument("-v", "--version", action="version",

2165

version = "%(prog)s {0}".format(version),

1982

version = "%%(prog)s %s" % version,

2166

1983

help="show version number and exit")

2167

1984

parser.add_argument("-i", "--interface", metavar="IF",

2168

1985

help="Bind to interface IF")

2193

2010

parser.add_argument("--no-restore", action="store_false",

2194

2011

dest="restore", help="Do not restore stored"

2195

2012

" state")

2196

parser.add_argument("--socket", type=int,

2197

help="Specify a file descriptor to a network"

2198

" socket to use instead of creating one")

2199

2013

parser.add_argument("--statedir", metavar="DIR",

2200

2014

help="Directory to save/restore state in")

2201

parser.add_argument("--foreground", action="store_true",

2202

help="Run in foreground")

2203

2015

2204

2016

options = parser.parse_args()

2205

2017

2220

2032

"use_ipv6": "True",

2221

2033

"debuglevel": "",

2222

2034

"restore": "True",

2223

"socket": "",

2224

"statedir": "/var/lib/mandos",

2225

"foreground": "False",

2035

"statedir": "/var/lib/mandos"

2226

2036

}

2227

2037

2228

2038

# Parse config file for server-global settings

2233

2043

# Convert the SafeConfigParser object to a dict

2234

2044

server_settings = server_config.defaults()

2235

2045

# Use the appropriate methods on the non-string config options

2236

for option in ("debug", "use_dbus", "use_ipv6", "foreground"):

2046

for option in ("debug", "use_dbus", "use_ipv6"):

2237

2047

server_settings[option] = server_config.getboolean("DEFAULT",

2238

2048

option)

2239

2049

if server_settings["port"]:

2240

2050

server_settings["port"] = server_config.getint("DEFAULT",

2241

2051

"port")

2242

if server_settings["socket"]:

2243

server_settings["socket"] = server_config.getint("DEFAULT",

2244

"socket")

2245

# Later, stdin will, and stdout and stderr might, be dup'ed

2246

# over with an opened os.devnull. But we don't want this to

2247

# happen with a supplied network socket.

2248

if 0 <= server_settings["socket"] <= 2:

2249

server_settings["socket"] = os.dup(server_settings

2250

["socket"])

2251

2052

del server_config

2252

2053

2253

2054

# Override the settings from the config file with command line

2255

2056

for option in ("interface", "address", "port", "debug",

2256

2057

"priority", "servicename", "configdir",

2257

2058

"use_dbus", "use_ipv6", "debuglevel", "restore",

2258

"statedir", "socket", "foreground"):

2059

"statedir"):

2259

2060

value = getattr(options, option)

2260

2061

if value is not None:

2261

2062

server_settings[option] = value

2264

2065

for option in server_settings.keys():

2265

2066

if type(server_settings[option]) is str:

2266

2067

server_settings[option] = unicode(server_settings[option])

2267

# Debug implies foreground

2268

if server_settings["debug"]:

2269

server_settings["foreground"] = True

2270

2068

# Now we have our good server settings in "server_settings"

2271

2069

2272

2070

##################################################################

2278

2076

use_ipv6 = server_settings["use_ipv6"]

2279

2077

stored_state_path = os.path.join(server_settings["statedir"],

2280

2078

stored_state_file)

2281

foreground = server_settings["foreground"]

2282

2079

2283

2080

if debug:

2284

initlogger(debug, logging.DEBUG)

2081

initlogger(logging.DEBUG)

2285

2082

else:

2286

2083

if not debuglevel:

2287

initlogger(debug)

2084

initlogger()

2288

2085

else:

2289

2086

level = getattr(logging, debuglevel.upper())

2290

initlogger(debug, level)

2087

initlogger(level)

2291

2088

2292

2089

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

2293

2090

syslogger.setFormatter(logging.Formatter

2294

('Mandos ({0}) [%(process)d]:'

2295

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

2296

.format(server_settings

2297

["servicename"])))

2091

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

2092

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

2093

% server_settings["servicename"]))

2298

2094

2299

2095

# Parse config file with clients

2300

client_config = configparser.SafeConfigParser(Client

2301

.client_defaults)

2096

client_config = configparser.SafeConfigParser(Client.client_defaults)

2302

2097

client_config.read(os.path.join(server_settings["configdir"],

2303

2098

"clients.conf"))

2304

2099

2313

2108

use_ipv6=use_ipv6,

2314

2109

gnutls_priority=

2315

2110

server_settings["priority"],

2316

use_dbus=use_dbus,

2317

socketfd=(server_settings["socket"]

2318

or None))

2319

if not foreground:

2111

use_dbus=use_dbus)

2112

if not debug:

2320

2113

pidfilename = "/var/run/mandos.pid"

2321

pidfile = None

2322

2114

try:

2323

2115

pidfile = open(pidfilename, "w")

2324

except IOError as e:

2325

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

2326

exc_info=e)

2116

except IOError:

2117

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

2327

2118

2328

for name in ("_mandos", "mandos", "nobody"):

2119

try:

2120

uid = pwd.getpwnam("_mandos").pw_uid

2121

gid = pwd.getpwnam("_mandos").pw_gid

2122

except KeyError:

2329

2123

try:

2330

uid = pwd.getpwnam(name).pw_uid

2331

gid = pwd.getpwnam(name).pw_gid

2332

break

2124

uid = pwd.getpwnam("mandos").pw_uid

2125

gid = pwd.getpwnam("mandos").pw_gid

2333

2126

except KeyError:

2334

continue

2335

else:

2336

uid = 65534

2337

gid = 65534

2127

try:

2128

uid = pwd.getpwnam("nobody").pw_uid

2129

gid = pwd.getpwnam("nobody").pw_gid

2130

except KeyError:

2131

uid = 65534

2132

gid = 65534

2338

2133

try:

2339

2134

os.setgid(gid)

2340

2135

os.setuid(uid)

2341

2136

except OSError as error:

2342

if error.errno != errno.EPERM:

2137

if error[0] != errno.EPERM:

2343

2138

raise error

2344

2139

2345

2140

if debug:

2357

2152

.gnutls_global_set_log_function(debug_gnutls))

2358

2153

2359

2154

# Redirect stdin so all checkers get /dev/null

2360

null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)

2155

null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)

2361

2156

os.dup2(null, sys.stdin.fileno())

2362

2157

if null > 2:

2363

2158

os.close(null)

2159

else:

2160

# No console logging

2161

logger.removeHandler(console)

2364

2162

2365

2163

# Need to fork before connecting to D-Bus

2366

if not foreground:

2164

if not debug:

2367

2165

# Close all input and output, do double fork, etc.

2368

2166

daemon()

2369

2167

2370

# multiprocessing will use threads, so before we use gobject we

2371

# need to inform gobject that threads will be used.

2372

2168

gobject.threads_init()

2373

2169

2374

2170

global main_loop

2375

2171

# From the Avahi example code

2376

DBusGMainLoop(set_as_default=True)

2172

DBusGMainLoop(set_as_default=True )

2377

2173

main_loop = gobject.MainLoop()

2378

2174

bus = dbus.SystemBus()

2379

2175

# End of Avahi example code

2385

2181

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

2386

2182

do_not_queue=True))

2387

2183

except dbus.exceptions.NameExistsException as e:

2388

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

2184

logger.error(unicode(e) + ", disabling D-Bus")

2389

2185

use_dbus = False

2390

2186

server_settings["use_dbus"] = False

2391

2187

tcp_server.use_dbus = False

2403

2199

2404

2200

client_class = Client

2405

2201

if use_dbus:

2406

client_class = functools.partial(ClientDBus, bus = bus)

2202

client_class = functools.partial(ClientDBusTransitional,

2203

bus = bus)

2407

2204

2408

2205

client_settings = Client.config_parser(client_config)

2409

2206

old_client_settings = {}

2417

2214

(stored_state))

2418

2215

os.remove(stored_state_path)

2419

2216

except IOError as e:

2420

if e.errno == errno.ENOENT:

2421

logger.warning("Could not load persistent state: {0}"

2422

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

2423

else:

2424

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

2425

exc_info=e)

2217

logger.warning("Could not load persistent state: {0}"

2218

.format(e))

2219

if e.errno != errno.ENOENT:

2426

2220

raise

2427

2221

except EOFError as e:

2428

2222

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

2429

"EOFError:", exc_info=e)

2223

"EOFError: {0}".format(e))

2430

2224

2431

2225

with PGPEngine() as pgp:

2432

2226

for client_name, client in clients_data.iteritems():

2449

2243

2450

2244

# Clients who has passed its expire date can still be

2451

2245

# enabled if its last checker was successful. Clients

2452

# whose checker succeeded before we stored its state is

2453

# assumed to have successfully run all checkers during

2454

# downtime.

2246

# whose checker failed before we stored its state is

2247

# assumed to have failed all checkers during downtime.

2455

2248

if client["enabled"]:

2456

2249

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

2457

2250

if not client["last_checked_ok"]:

2458

2251

logger.warning(

2459

2252

"disabling client {0} - Client never "

2460

"performed a successful checker"

2461

.format(client_name))

2253

"performed a successfull checker"

2254

.format(client["name"]))

2462

2255

client["enabled"] = False

2463

2256

elif client["last_checker_status"] != 0:

2464

2257

logger.warning(

2465

2258

"disabling client {0} - Client "

2466

2259

"last checker failed with error code {1}"

2467

.format(client_name,

2260

.format(client["name"],

2468

2261

client["last_checker_status"]))

2469

2262

client["enabled"] = False

2470

2263

else:

2471

2264

client["expires"] = (datetime.datetime

2472

2265

.utcnow()

2473

2266

+ client["timeout"])

2474

logger.debug("Last checker succeeded,"

2475

" keeping {0} enabled"

2476

.format(client_name))

2267

2477

2268

try:

2478

2269

client["secret"] = (

2479

2270

pgp.decrypt(client["encrypted_secret"],

2485

2276

.format(client_name))

2486

2277

client["secret"] = (

2487

2278

client_settings[client_name]["secret"])

2279

2488

2280

2489

2281

# Add/remove clients based on new changes made to config

2490

for client_name in (set(old_client_settings)

2491

- set(client_settings)):

2282

for client_name in set(old_client_settings) - set(client_settings):

2492

2283

del clients_data[client_name]

2493

for client_name in (set(client_settings)

2494

- set(old_client_settings)):

2284

for client_name in set(client_settings) - set(old_client_settings):

2495

2285

clients_data[client_name] = client_settings[client_name]

2496

2497

# Create all client objects

2286

2287

# Create clients all clients

2498

2288

for client_name, client in clients_data.iteritems():

2499

2289

tcp_server.clients[client_name] = client_class(

2500

2290

name = client_name, settings = client)

2501

2291

2502

2292

if not tcp_server.clients:

2503

2293

logger.warning("No clients defined")

2504

2505

if not foreground:

2506

if pidfile is not None:

2507

try:

2508

with pidfile:

2509

pid = os.getpid()

2510

pidfile.write(str(pid) + "\n".encode("utf-8"))

2511

except IOError:

2512

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

2513

pidfilename, pid)

2514

del pidfile

2294

2295

if not debug:

2296

try:

2297

with pidfile:

2298

pid = os.getpid()

2299

pidfile.write(str(pid) + "\n".encode("utf-8"))

2300

del pidfile

2301

except IOError:

2302

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

2303

pidfilename, pid)

2304

except NameError:

2305

# "pidfile" was never created

2306

pass

2515

2307

del pidfilename

2308

signal.signal(signal.SIGINT, signal.SIG_IGN)

2516

2309

2517

2310

signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())

2518

2311

signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())

2519

2312

2520

2313

if use_dbus:

2521

@alternate_dbus_interfaces({"se.recompile.Mandos":

2522

"se.bsnet.fukt.Mandos"})

2523

class MandosDBusService(DBusObjectWithProperties):

2314

class MandosDBusService(dbus.service.Object):

2524

2315

"""A D-Bus proxy object"""

2525

2316

def __init__(self):

2526

2317

dbus.service.Object.__init__(self, bus, "/")

2527

2318

_interface = "se.recompile.Mandos"

2528

2319

2529

@dbus_interface_annotations(_interface)

2530

def _foo(self):

2531

return { "org.freedesktop.DBus.Property"

2532

".EmitsChangedSignal":

2533

"false"}

2534

2535

2320

@dbus.service.signal(_interface, signature="o")

2536

2321

def ClientAdded(self, objpath):

2537

2322

"D-Bus signal"

2579

2364

2580

2365

del _interface

2581

2366

2582

mandos_dbus_service = MandosDBusService()

2367

class MandosDBusServiceTransitional(MandosDBusService):

2368

__metaclass__ = AlternateDBusNamesMetaclass

2369

mandos_dbus_service = MandosDBusServiceTransitional()

2583

2370

2584

2371

def cleanup():

2585

2372

"Cleanup function; run on exit"

2618

2405

del client_settings[client.name]["secret"]

2619

2406

2620

2407

try:

2621

with (tempfile.NamedTemporaryFile

2622

(mode='wb', suffix=".pickle", prefix='clients-',

2623

dir=os.path.dirname(stored_state_path),

2624

delete=False)) as stored_state:

2408

tempfd, tempname = tempfile.mkstemp(suffix=".pickle",

2409

prefix="clients-",

2410

dir=os.path.dirname

2411

(stored_state_path))

2412

with os.fdopen(tempfd, "wb") as stored_state:

2625

2413

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

2626

tempname=stored_state.name

2627

2414

os.rename(tempname, stored_state_path)

2628

2415

except (IOError, OSError) as e:

2629

if not debug:

2630

try:

2631

os.remove(tempname)

2632

except NameError:

2633

pass

2634

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

2635

logger.warning("Could not save persistent state: {0}"

2636

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

2637

else:

2638

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

2639

exc_info=e)

2640

raise e

2416

logger.warning("Could not save persistent state: {0}"

2417

.format(e))

2418

if e.errno not in set((errno.ENOENT, errno.EACCES,

2419

errno.EEXIST)):

2420

raise

2641

2421

2642

2422

# Delete all clients, and settings from config

2643

2423

while tcp_server.clients:

2670

2450

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

2671

2451

if use_ipv6:

2672

2452

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

2673

" flowinfo %d, scope_id %d",

2674

*tcp_server.socket.getsockname())

2453

" flowinfo %d, scope_id %d"

2454

% tcp_server.socket.getsockname())

2675

2455

else: # IPv4

2676

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

2677

*tcp_server.socket.getsockname())

2456

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

2457

% tcp_server.socket.getsockname())

2678

2458

2679

2459

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

2680

2460

2683

2463

try:

2684

2464

service.activate()

2685

2465

except dbus.exceptions.DBusException as error:

2686

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

2466

logger.critical("DBusException: %s", error)

2687

2467

cleanup()

2688

2468

sys.exit(1)

2689

2469

# End of Avahi example code

2696

2476

logger.debug("Starting main loop")

2697

2477

main_loop.run()

2698

2478

except AvahiError as error:

2699

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

2479

logger.critical("AvahiError: %s", error)

2700

2480

cleanup()

2701

2481

sys.exit(1)

2702

2482

except KeyboardInterrupt: