/mandos/release : revision 237.7.380

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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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try:

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from future_builtins import *

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except ImportError:

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pass

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import SocketServer as socketserver

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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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import gnutls.crypto

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import gnutls.connection

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import gnutls.errors

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import gnutls.library.functions

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import gnutls.library.constants

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import gnutls.library.types

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import ConfigParser as configparser

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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 struct

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import fcntl

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import functools

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import cPickle as pickle

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try:

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import cPickle as pickle

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except ImportError:

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import pickle

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import multiprocessing

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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 collections

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import codecs

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import dbus

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import dbus.service

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import gobject

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import avahi

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from gi.repository import GLib

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from dbus.mainloop.glib import DBusGMainLoop

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import ctypes

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import ctypes.util

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import xml.dom.minidom

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import inspect

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import GnuPGInterface

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try:

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SO_BINDTODEVICE = socket.SO_BINDTODEVICE

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except ImportError:

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SO_BINDTODEVICE = None

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version = "1.6.0"

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if sys.version_info.major == 2:

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str = unicode

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version = "1.7.6"

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stored_state_file = "clients.pickle"

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logger = logging.getLogger()

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syslogger = (logging.handlers.SysLogHandler

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(facility = logging.handlers.SysLogHandler.LOG_DAEMON,

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address = str("/dev/log")))

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syslogger = None

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try:

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if_nametoindex = (ctypes.cdll.LoadLibrary

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(ctypes.util.find_library("c"))

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.if_nametoindex)

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if_nametoindex = ctypes.cdll.LoadLibrary(

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ctypes.util.find_library("c")).if_nametoindex

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except (OSError, AttributeError):

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def if_nametoindex(interface):

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"Get an interface index the hard way, i.e. using fcntl()"

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SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h

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with contextlib.closing(socket.socket()) as s:

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ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

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struct.pack(str("16s16x"),

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interface))

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interface_index = struct.unpack(str("I"),

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ifreq[16:20])[0]

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struct.pack(b"16s16x", interface))

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interface_index = struct.unpack("I", ifreq[16:20])[0]

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return interface_index

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def copy_function(func):

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"""Make a copy of a function"""

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if sys.version_info.major == 2:

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return types.FunctionType(func.func_code,

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func.func_globals,

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func.func_name,

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func.func_defaults,

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func.func_closure)

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else:

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return types.FunctionType(func.__code__,

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func.__globals__,

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func.__name__,

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func.__defaults__,

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func.__closure__)

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

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"""init logger and add loglevel"""

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global syslogger

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syslogger = (logging.handlers.SysLogHandler(

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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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class PGPEngine(object):

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"""A simple class for OpenPGP symmetric encryption & decryption"""

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def __init__(self):

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self.gnupg = GnuPGInterface.GnuPG()

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self.tempdir = tempfile.mkdtemp(prefix="mandos-")

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self.gnupg = GnuPGInterface.GnuPG()

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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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self.gpg = "gpg"

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try:

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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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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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'--no-use-agent']

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def __enter__(self):

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return self

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def password_encode(self, password):

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# Passphrase can not be empty and can not contain newlines or

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# NUL bytes. So we prefix it and hex encode it.

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return b"mandos" + binascii.hexlify(password)

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encoded = b"mandos" + binascii.hexlify(password)

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if len(encoded) > 2048:

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# GnuPG can't handle long passwords, so encode differently

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encoded = (b"mandos" + password.replace(b"\\", b"\\\\")

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.replace(b"\n", b"\\n")

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.replace(b"\0", b"\\x00"))

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return encoded

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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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try:

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

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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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f.write(data)

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

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ciphertext = f.read()

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proc.wait()

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except IOError as e:

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raise PGPError(e)

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self.gnupg.passphrase = None

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passphrase = self.password_encode(password)

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with tempfile.NamedTemporaryFile(

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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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passfile.name]

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+ self.gnupgargs,

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stdin = subprocess.PIPE,

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stdout = subprocess.PIPE,

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stderr = subprocess.PIPE)

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ciphertext, err = proc.communicate(input = data)

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if proc.returncode != 0:

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raise PGPError(err)

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return ciphertext

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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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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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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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proc.wait()

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except IOError as e:

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raise PGPError(e)

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self.gnupg.passphrase = None

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passphrase = self.password_encode(password)

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with tempfile.NamedTemporaryFile(

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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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passfile.name]

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+ self.gnupgargs,

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stdin = subprocess.PIPE,

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stdout = subprocess.PIPE,

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stderr = subprocess.PIPE)

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decrypted_plaintext, err = proc.communicate(input = data)

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if proc.returncode != 0:

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raise PGPError(err)

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return decrypted_plaintext

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# Pretend that we have an Avahi module

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class Avahi(object):

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"""This isn't so much a class as it is a module-like namespace.

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It is instantiated once, and simulates having an Avahi module."""

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IF_UNSPEC = -1 # avahi-common/address.h

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PROTO_UNSPEC = -1 # avahi-common/address.h

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PROTO_INET = 0 # avahi-common/address.h

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PROTO_INET6 = 1 # avahi-common/address.h

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DBUS_NAME = "org.freedesktop.Avahi"

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DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"

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DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"

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DBUS_PATH_SERVER = "/"

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def string_array_to_txt_array(self, t):

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return dbus.Array((dbus.ByteArray(s.encode("utf-8"))

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for s in t), signature="ay")

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ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h

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ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h

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ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h

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SERVER_INVALID = 0 # avahi-common/defs.h

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SERVER_REGISTERING = 1 # avahi-common/defs.h

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SERVER_RUNNING = 2 # avahi-common/defs.h

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SERVER_COLLISION = 3 # avahi-common/defs.h

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SERVER_FAILURE = 4 # avahi-common/defs.h

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avahi = Avahi()

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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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super(AvahiError, self).__init__(value, *args, **kwargs)

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def __unicode__(self):

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return unicode(repr(self.value))

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return super(AvahiError, self).__init__(value, *args,

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**kwargs)

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class AvahiServiceError(AvahiError):

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pass

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class AvahiGroupError(AvahiError):

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pass

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bus: dbus.SystemBus()

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315

"""

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316

250

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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protocol = avahi.PROTO_UNSPEC, bus = None):

317

def __init__(self,

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interface = avahi.IF_UNSPEC,

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name = None,

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servicetype = None,

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port = None,

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TXT = None,

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domain = "",

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host = "",

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max_renames = 32768,

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protocol = avahi.PROTO_UNSPEC,

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bus = None):

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self.interface = interface

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self.name = name

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self.type = servicetype

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self.bus = bus

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self.entry_group_state_changed_match = None

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342

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def rename(self):

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def rename(self, remove=True):

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

271

345

if self.rename_count >= self.max_renames:

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

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347

" 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 = unicode(self.server

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.GetAlternativeServiceName(self.name))

350

self.name = str(

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self.server.GetAlternativeServiceName(self.name))

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self.rename_count += 1

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353

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

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354

self.name)

280

self.remove()

355

if remove:

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self.remove()

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357

try:

282

358

self.add()

283

359

except dbus.exceptions.DBusException as error:

284

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

285

self.cleanup()

286

os._exit(1)

287

self.rename_count += 1

360

if (error.get_dbus_name()

361

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

362

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

363

return self.rename(remove=False)

364

else:

365

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

366

self.cleanup()

367

os._exit(1)

288

368

289

369

def remove(self):

290

370

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

328

408

self.rename()

329

409

elif state == avahi.ENTRY_GROUP_FAILURE:

330

410

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

331

unicode(error))

332

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

333

.format(error))

411

str(error))

412

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

334

413

335

414

def cleanup(self):

336

415

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

346

425

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

347

426

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

348

427

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

349

bad_states = { avahi.SERVER_INVALID:

350

"Zeroconf server invalid",

351

avahi.SERVER_REGISTERING: None,

352

avahi.SERVER_COLLISION:

353

"Zeroconf server name collision",

354

avahi.SERVER_FAILURE:

355

"Zeroconf server failure" }

428

bad_states = {

429

avahi.SERVER_INVALID: "Zeroconf server invalid",

430

avahi.SERVER_REGISTERING: None,

431

avahi.SERVER_COLLISION: "Zeroconf server name collision",

432

avahi.SERVER_FAILURE: "Zeroconf server failure",

433

}

356

434

if state in bad_states:

357

435

if bad_states[state] is not None:

358

436

if error is None:

361

439

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

362

440

self.cleanup()

363

441

elif state == avahi.SERVER_RUNNING:

364

self.add()

442

try:

443

self.add()

444

except dbus.exceptions.DBusException as error:

445

if (error.get_dbus_name()

446

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

447

logger.info("Local Zeroconf service name"

448

" collision.")

449

return self.rename(remove=False)

450

else:

451

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

452

self.cleanup()

453

os._exit(1)

365

454

else:

366

455

if error is None:

367

456

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

377

466

follow_name_owner_changes=True),

378

467

avahi.DBUS_INTERFACE_SERVER)

379

468

self.server.connect_to_signal("StateChanged",

380

self.server_state_changed)

469

self.server_state_changed)

381

470

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

382

471

383

472

384

473

class AvahiServiceToSyslog(AvahiService):

385

def rename(self):

474

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

386

475

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

387

ret = AvahiService.rename(self)

388

syslogger.setFormatter(logging.Formatter

389

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

390

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

391

.format(self.name)))

476

ret = AvahiService.rename(self, *args, **kwargs)

477

syslogger.setFormatter(logging.Formatter(

478

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

479

.format(self.name)))

392

480

return ret

393

481

394

395

def timedelta_to_milliseconds(td):

396

"Convert a datetime.timedelta() to milliseconds"

397

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

398

+ (td.seconds * 1000)

399

+ (td.microseconds // 1000))

400

482

# Pretend that we have a GnuTLS module

483

class GnuTLS(object):

484

"""This isn't so much a class as it is a module-like namespace.

485

It is instantiated once, and simulates having a GnuTLS module."""

486

487

_library = ctypes.cdll.LoadLibrary(

488

ctypes.util.find_library("gnutls"))

489

_need_version = b"3.3.0"

490

def __init__(self):

491

# Need to use class name "GnuTLS" here, since this method is

492

# called before the assignment to the "gnutls" global variable

493

# happens.

494

if GnuTLS.check_version(self._need_version) is None:

495

raise GnuTLS.Error("Needs GnuTLS {} or later"

496

.format(self._need_version))

497

498

# Unless otherwise indicated, the constants and types below are

499

# all from the gnutls/gnutls.h C header file.

500

501

# Constants

502

E_SUCCESS = 0

503

E_INTERRUPTED = -52

504

E_AGAIN = -28

505

CRT_OPENPGP = 2

506

CLIENT = 2

507

SHUT_RDWR = 0

508

CRD_CERTIFICATE = 1

509

E_NO_CERTIFICATE_FOUND = -49

510

OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h

511

512

# Types

513

class session_int(ctypes.Structure):

514

_fields_ = []

515

session_t = ctypes.POINTER(session_int)

516

class certificate_credentials_st(ctypes.Structure):

517

_fields_ = []

518

certificate_credentials_t = ctypes.POINTER(

519

certificate_credentials_st)

520

certificate_type_t = ctypes.c_int

521

class datum_t(ctypes.Structure):

522

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

523

('size', ctypes.c_uint)]

524

class openpgp_crt_int(ctypes.Structure):

525

_fields_ = []

526

openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)

527

openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h

528

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

529

credentials_type_t = ctypes.c_int

530

transport_ptr_t = ctypes.c_void_p

531

close_request_t = ctypes.c_int

532

533

# Exceptions

534

class Error(Exception):

535

# We need to use the class name "GnuTLS" here, since this

536

# exception might be raised from within GnuTLS.__init__,

537

# which is called before the assignment to the "gnutls"

538

# global variable has happened.

539

def __init__(self, message = None, code = None, args=()):

540

# Default usage is by a message string, but if a return

541

# code is passed, convert it to a string with

542

# gnutls.strerror()

543

self.code = code

544

if message is None and code is not None:

545

message = GnuTLS.strerror(code)

546

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

547

message, *args)

548

549

class CertificateSecurityError(Error):

550

pass

551

552

# Classes

553

class Credentials(object):

554

def __init__(self):

555

self._c_object = gnutls.certificate_credentials_t()

556

gnutls.certificate_allocate_credentials(

557

ctypes.byref(self._c_object))

558

self.type = gnutls.CRD_CERTIFICATE

559

560

def __del__(self):

561

gnutls.certificate_free_credentials(self._c_object)

562

563

class ClientSession(object):

564

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

565

self._c_object = gnutls.session_t()

566

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

567

gnutls.set_default_priority(self._c_object)

568

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

569

gnutls.handshake_set_private_extensions(self._c_object,

570

True)

571

self.socket = socket

572

if credentials is None:

573

credentials = gnutls.Credentials()

574

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

575

ctypes.cast(credentials._c_object,

576

ctypes.c_void_p))

577

self.credentials = credentials

578

579

def __del__(self):

580

gnutls.deinit(self._c_object)

581

582

def handshake(self):

583

return gnutls.handshake(self._c_object)

584

585

def send(self, data):

586

data = bytes(data)

587

data_len = len(data)

588

while data_len > 0:

589

data_len -= gnutls.record_send(self._c_object,

590

data[-data_len:],

591

data_len)

592

593

def bye(self):

594

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

595

596

# Error handling functions

597

def _error_code(result):

598

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

599

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

600

if result >= 0:

601

return result

602

if result == gnutls.E_NO_CERTIFICATE_FOUND:

603

raise gnutls.CertificateSecurityError(code = result)

604

raise gnutls.Error(code = result)

605

606

def _retry_on_error(result, func, arguments):

607

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

608

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

609

while result < 0:

610

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

611

return _error_code(result)

612

result = func(*arguments)

613

return result

614

615

# Unless otherwise indicated, the function declarations below are

616

# all from the gnutls/gnutls.h C header file.

617

618

# Functions

619

priority_set_direct = _library.gnutls_priority_set_direct

620

priority_set_direct.argtypes = [session_t, ctypes.c_char_p,

621

ctypes.POINTER(ctypes.c_char_p)]

622

priority_set_direct.restype = _error_code

623

624

init = _library.gnutls_init

625

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

626

init.restype = _error_code

627

628

set_default_priority = _library.gnutls_set_default_priority

629

set_default_priority.argtypes = [session_t]

630

set_default_priority.restype = _error_code

631

632

record_send = _library.gnutls_record_send

633

record_send.argtypes = [session_t, ctypes.c_void_p,

634

ctypes.c_size_t]

635

record_send.restype = ctypes.c_ssize_t

636

record_send.errcheck = _retry_on_error

637

638

certificate_allocate_credentials = (

639

_library.gnutls_certificate_allocate_credentials)

640

certificate_allocate_credentials.argtypes = [

641

ctypes.POINTER(certificate_credentials_t)]

642

certificate_allocate_credentials.restype = _error_code

643

644

certificate_free_credentials = (

645

_library.gnutls_certificate_free_credentials)

646

certificate_free_credentials.argtypes = [certificate_credentials_t]

647

certificate_free_credentials.restype = None

648

649

handshake_set_private_extensions = (

650

_library.gnutls_handshake_set_private_extensions)

651

handshake_set_private_extensions.argtypes = [session_t,

652

ctypes.c_int]

653

handshake_set_private_extensions.restype = None

654

655

credentials_set = _library.gnutls_credentials_set

656

credentials_set.argtypes = [session_t, credentials_type_t,

657

ctypes.c_void_p]

658

credentials_set.restype = _error_code

659

660

strerror = _library.gnutls_strerror

661

strerror.argtypes = [ctypes.c_int]

662

strerror.restype = ctypes.c_char_p

663

664

certificate_type_get = _library.gnutls_certificate_type_get

665

certificate_type_get.argtypes = [session_t]

666

certificate_type_get.restype = _error_code

667

668

certificate_get_peers = _library.gnutls_certificate_get_peers

669

certificate_get_peers.argtypes = [session_t,

670

ctypes.POINTER(ctypes.c_uint)]

671

certificate_get_peers.restype = ctypes.POINTER(datum_t)

672

673

global_set_log_level = _library.gnutls_global_set_log_level

674

global_set_log_level.argtypes = [ctypes.c_int]

675

global_set_log_level.restype = None

676

677

global_set_log_function = _library.gnutls_global_set_log_function

678

global_set_log_function.argtypes = [log_func]

679

global_set_log_function.restype = None

680

681

deinit = _library.gnutls_deinit

682

deinit.argtypes = [session_t]

683

deinit.restype = None

684

685

handshake = _library.gnutls_handshake

686

handshake.argtypes = [session_t]

687

handshake.restype = _error_code

688

handshake.errcheck = _retry_on_error

689

690

transport_set_ptr = _library.gnutls_transport_set_ptr

691

transport_set_ptr.argtypes = [session_t, transport_ptr_t]

692

transport_set_ptr.restype = None

693

694

bye = _library.gnutls_bye

695

bye.argtypes = [session_t, close_request_t]

696

bye.restype = _error_code

697

bye.errcheck = _retry_on_error

698

699

check_version = _library.gnutls_check_version

700

check_version.argtypes = [ctypes.c_char_p]

701

check_version.restype = ctypes.c_char_p

702

703

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

704

705

openpgp_crt_init = _library.gnutls_openpgp_crt_init

706

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

707

openpgp_crt_init.restype = _error_code

708

709

openpgp_crt_import = _library.gnutls_openpgp_crt_import

710

openpgp_crt_import.argtypes = [openpgp_crt_t,

711

ctypes.POINTER(datum_t),

712

openpgp_crt_fmt_t]

713

openpgp_crt_import.restype = _error_code

714

715

openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self

716

openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,

717

ctypes.POINTER(ctypes.c_uint)]

718

openpgp_crt_verify_self.restype = _error_code

719

720

openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit

721

openpgp_crt_deinit.argtypes = [openpgp_crt_t]

722

openpgp_crt_deinit.restype = None

723

724

openpgp_crt_get_fingerprint = (

725

_library.gnutls_openpgp_crt_get_fingerprint)

726

openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,

727

ctypes.c_void_p,

728

ctypes.POINTER(

729

ctypes.c_size_t)]

730

openpgp_crt_get_fingerprint.restype = _error_code

731

732

# Remove non-public functions

733

del _error_code, _retry_on_error

734

# Create the global "gnutls" object, simulating a module

735

gnutls = GnuTLS()

736

737

def call_pipe(connection, # : multiprocessing.Connection

738

func, *args, **kwargs):

739

"""This function is meant to be called by multiprocessing.Process

740

741

This function runs func(*args, **kwargs), and writes the resulting

742

return value on the provided multiprocessing.Connection.

743

"""

744

connection.send(func(*args, **kwargs))

745

connection.close()

401

746

402

747

class Client(object):

403

748

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

409

754

checker: subprocess.Popen(); a running checker process used

410

755

to see if the client lives.

411

756

'None' if no process is running.

412

checker_callback_tag: a gobject event source tag, or None

757

checker_callback_tag: a GLib event source tag, or None

413

758

checker_command: string; External command which is run to check

414

759

if client lives. %() expansions are done at

415

760

runtime with vars(self) as dict, so that for

416

761

instance %(name)s can be used in the command.

417

checker_initiator_tag: a gobject event source tag, or None

762

checker_initiator_tag: a GLib event source tag, or None

418

763

created: datetime.datetime(); (UTC) object creation

419

764

client_structure: Object describing what attributes a client has

420

765

and is used for storing the client at exit

421

766

current_checker_command: string; current running checker_command

422

disable_initiator_tag: a gobject event source tag, or None

767

disable_initiator_tag: a GLib event source tag, or None

423

768

enabled: bool()

424

769

fingerprint: string (40 or 32 hexadecimal digits); used to

425

770

uniquely identify the client

430

775

last_checker_status: integer between 0 and 255 reflecting exit

431

776

status of last checker. -1 reflects crashed

432

777

checker, -2 means no checker completed yet.

778

last_checker_signal: The signal which killed the last checker, if

779

last_checker_status is -1

433

780

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

434

781

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

435

782

D-Bus identifiers

440

787

runtime_expansions: Allowed attributes for runtime expansion.

441

788

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

442

789

disabled, or None

790

server_settings: The server_settings dict from main()

443

791

"""

444

792

445

793

runtime_expansions = ("approval_delay", "approval_duration",

447

795

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

448

796

"last_approval_request", "last_checked_ok",

449

797

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

450

client_defaults = { "timeout": "PT5M",

451

"extended_timeout": "PT15M",

452

"interval": "PT2M",

453

"checker": "fping -q -- %%(host)s",

454

"host": "",

455

"approval_delay": "PT0S",

456

"approval_duration": "PT1S",

457

"approved_by_default": "True",

458

"enabled": "True",

459

}

460

461

def timeout_milliseconds(self):

462

"Return the 'timeout' attribute in milliseconds"

463

return timedelta_to_milliseconds(self.timeout)

464

465

def extended_timeout_milliseconds(self):

466

"Return the 'extended_timeout' attribute in milliseconds"

467

return timedelta_to_milliseconds(self.extended_timeout)

468

469

def interval_milliseconds(self):

470

"Return the 'interval' attribute in milliseconds"

471

return timedelta_to_milliseconds(self.interval)

472

473

def approval_delay_milliseconds(self):

474

return timedelta_to_milliseconds(self.approval_delay)

798

client_defaults = {

799

"timeout": "PT5M",

800

"extended_timeout": "PT15M",

801

"interval": "PT2M",

802

"checker": "fping -q -- %%(host)s",

803

"host": "",

804

"approval_delay": "PT0S",

805

"approval_duration": "PT1S",

806

"approved_by_default": "True",

807

"enabled": "True",

808

}

475

809

476

810

@staticmethod

477

811

def config_parser(config):

493

827

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

494

828

"enabled")

495

829

830

# Uppercase and remove spaces from fingerprint for later

831

# comparison purposes with return value from the

832

# fingerprint() function

496

833

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

497

834

.replace(" ", ""))

498

835

if "secret" in section:

499

client["secret"] = section["secret"].decode("base64")

836

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

837

.encode("utf-8"),

838

"base64")

500

839

elif "secfile" in section:

501

840

with open(os.path.expanduser(os.path.expandvars

502

841

(section["secfile"])),

503

842

"rb") as secfile:

504

843

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

505

844

else:

506

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

845

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

507

846

.format(section))

508

847

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

509

848

client["extended_timeout"] = string_to_delta(

520

859

521

860

return settings

522

861

523

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

862

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

524

863

self.name = name

864

if server_settings is None:

865

server_settings = {}

866

self.server_settings = server_settings

525

867

# adding all client settings

526

for setting, value in settings.iteritems():

868

for setting, value in settings.items():

527

869

setattr(self, setting, value)

528

870

529

871

if self.enabled:

537

879

self.expires = None

538

880

539

881

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

540

# Uppercase and remove spaces from fingerprint for later

541

# comparison purposes with return value from the fingerprint()

542

# function

543

882

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

544

883

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

545

884

datetime.datetime.utcnow())

552

891

self.current_checker_command = None

553

892

self.approved = None

554

893

self.approvals_pending = 0

555

self.changedstate = (multiprocessing_manager

556

.Condition(multiprocessing_manager

557

.Lock()))

558

self.client_structure = [attr for attr in

559

self.__dict__.iterkeys()

894

self.changedstate = multiprocessing_manager.Condition(

895

multiprocessing_manager.Lock())

896

self.client_structure = [attr

897

for attr in self.__dict__.keys()

560

898

if not attr.startswith("_")]

561

899

self.client_structure.append("client_structure")

562

900

563

for name, t in inspect.getmembers(type(self),

564

lambda obj:

565

isinstance(obj,

566

property)):

901

for name, t in inspect.getmembers(

902

type(self), lambda obj: isinstance(obj, property)):

567

903

if not name.startswith("_"):

568

904

self.client_structure.append(name)

569

905

590

926

if not quiet:

591

927

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

592

928

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

593

gobject.source_remove(self.disable_initiator_tag)

929

GLib.source_remove(self.disable_initiator_tag)

594

930

self.disable_initiator_tag = None

595

931

self.expires = None

596

932

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

597

gobject.source_remove(self.checker_initiator_tag)

933

GLib.source_remove(self.checker_initiator_tag)

598

934

self.checker_initiator_tag = None

599

935

self.stop_checker()

600

936

self.enabled = False

601

937

if not quiet:

602

938

self.send_changedstate()

603

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

939

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

604

940

return False

605

941

606

942

def __del__(self):

610

946

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

611

947

# and every interval from then on.

612

948

if self.checker_initiator_tag is not None:

613

gobject.source_remove(self.checker_initiator_tag)

614

self.checker_initiator_tag = (gobject.timeout_add

615

(self.interval_milliseconds(),

616

self.start_checker))

949

GLib.source_remove(self.checker_initiator_tag)

950

self.checker_initiator_tag = GLib.timeout_add(

951

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

952

self.start_checker)

617

953

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

618

954

if self.disable_initiator_tag is not None:

619

gobject.source_remove(self.disable_initiator_tag)

620

self.disable_initiator_tag = (gobject.timeout_add

621

(self.timeout_milliseconds(),

622

self.disable))

955

GLib.source_remove(self.disable_initiator_tag)

956

self.disable_initiator_tag = GLib.timeout_add(

957

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

623

958

# Also start a new checker *right now*.

624

959

self.start_checker()

625

960

626

def checker_callback(self, pid, condition, command):

961

def checker_callback(self, source, condition, connection,

962

command):

627

963

"""The checker has completed, so take appropriate actions."""

628

964

self.checker_callback_tag = None

629

965

self.checker = None

630

if os.WIFEXITED(condition):

631

self.last_checker_status = os.WEXITSTATUS(condition)

966

# Read return code from connection (see call_pipe)

967

returncode = connection.recv()

968

connection.close()

969

970

if returncode >= 0:

971

self.last_checker_status = returncode

972

self.last_checker_signal = None

632

973

if self.last_checker_status == 0:

633

974

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

634

975

vars(self))

635

976

self.checked_ok()

636

977

else:

637

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

638

vars(self))

978

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

639

979

else:

640

980

self.last_checker_status = -1

981

self.last_checker_signal = -returncode

641

982

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

642

983

vars(self))

984

return False

643

985

644

986

def checked_ok(self):

645

987

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

646

988

self.last_checked_ok = datetime.datetime.utcnow()

647

989

self.last_checker_status = 0

990

self.last_checker_signal = None

648

991

self.bump_timeout()

649

992

650

993

def bump_timeout(self, timeout=None):

652

995

if timeout is None:

653

996

timeout = self.timeout

654

997

if self.disable_initiator_tag is not None:

655

gobject.source_remove(self.disable_initiator_tag)

998

GLib.source_remove(self.disable_initiator_tag)

656

999

self.disable_initiator_tag = None

657

1000

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

658

self.disable_initiator_tag = (gobject.timeout_add

659

(timedelta_to_milliseconds

660

(timeout), self.disable))

1001

self.disable_initiator_tag = GLib.timeout_add(

1002

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

661

1003

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

662

1004

663

1005

def need_approval(self):

677

1019

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

678

1020

# should be.

679

1021

680

# If a checker exists, make sure it is not a zombie

681

try:

682

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

683

except (AttributeError, OSError) as error:

684

if (isinstance(error, OSError)

685

and error.errno != errno.ECHILD):

686

raise error

687

else:

688

if pid:

689

logger.warning("Checker was a zombie")

690

gobject.source_remove(self.checker_callback_tag)

691

self.checker_callback(pid, status,

692

self.current_checker_command)

1022

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

1023

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

1024

self.checker.join()

1025

self.checker = None

693

1026

# Start a new checker if needed

694

1027

if self.checker is None:

695

1028

# Escape attributes for the shell

696

escaped_attrs = dict(

697

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

698

for attr in

699

self.runtime_expansions)

1029

escaped_attrs = {

1030

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

1031

for attr in self.runtime_expansions }

700

1032

try:

701

1033

command = self.checker_command % escaped_attrs

702

1034

except TypeError as error:

703

1035

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

704

self.checker_command, exc_info=error)

705

return True # Try again later

1036

self.checker_command,

1037

exc_info=error)

1038

return True # Try again later

706

1039

self.current_checker_command = command

707

try:

708

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

709

command, self.name)

710

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

711

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

712

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

713

# always replaced by /dev/null.)

714

self.checker = subprocess.Popen(command,

715

close_fds=True,

716

shell=True, cwd="/")

717

except OSError as error:

718

logger.error("Failed to start subprocess",

719

exc_info=error)

720

return True

721

self.checker_callback_tag = (gobject.child_watch_add

722

(self.checker.pid,

723

self.checker_callback,

724

data=command))

725

# The checker may have completed before the gobject

726

# watch was added. Check for this.

727

try:

728

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

729

except OSError as error:

730

if error.errno == errno.ECHILD:

731

# This should never happen

732

logger.error("Child process vanished",

733

exc_info=error)

734

return True

735

raise

736

if pid:

737

gobject.source_remove(self.checker_callback_tag)

738

self.checker_callback(pid, status, command)

739

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

1040

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

1041

self.name)

1042

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

1043

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

1044

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

1045

# always replaced by /dev/null.)

1046

# The exception is when not debugging but nevertheless

1047

# running in the foreground; use the previously

1048

# created wnull.

1049

popen_args = { "close_fds": True,

1050

"shell": True,

1051

"cwd": "/" }

1052

if (not self.server_settings["debug"]

1053

and self.server_settings["foreground"]):

1054

popen_args.update({"stdout": wnull,

1055

"stderr": wnull })

1056

pipe = multiprocessing.Pipe(duplex = False)

1057

self.checker = multiprocessing.Process(

1058

target = call_pipe,

1059

args = (pipe[1], subprocess.call, command),

1060

kwargs = popen_args)

1061

self.checker.start()

1062

self.checker_callback_tag = GLib.io_add_watch(

1063

pipe[0].fileno(), GLib.IO_IN,

1064

self.checker_callback, pipe[0], command)

1065

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

740

1066

return True

741

1067

742

1068

def stop_checker(self):

743

1069

"""Force the checker process, if any, to stop."""

744

1070

if self.checker_callback_tag:

745

gobject.source_remove(self.checker_callback_tag)

1071

GLib.source_remove(self.checker_callback_tag)

746

1072

self.checker_callback_tag = None

747

1073

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

748

1074

return

749

1075

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

750

try:

751

self.checker.terminate()

752

#time.sleep(0.5)

753

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

754

# self.checker.kill()

755

except OSError as error:

756

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

757

raise

1076

self.checker.terminate()

758

1077

self.checker = None

759

1078

760

1079

761

def dbus_service_property(dbus_interface, signature="v",

762

access="readwrite", byte_arrays=False):

1080

def dbus_service_property(dbus_interface,

1081

signature="v",

1082

access="readwrite",

1083

byte_arrays=False):

763

1084

"""Decorators for marking methods of a DBusObjectWithProperties to

764

1085

become properties on the D-Bus.

765

1086

774

1095

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

775

1096

if byte_arrays and signature != "ay":

776

1097

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

777

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

1098

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

1099

778

1100

def decorator(func):

779

1101

func._dbus_is_property = True

780

1102

func._dbus_interface = dbus_interface

785

1107

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

786

1108

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

787

1109

return func

1110

788

1111

return decorator

789

1112

790

1113

799

1122

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

800

1123

"false"}

801

1124

"""

1125

802

1126

def decorator(func):

803

1127

func._dbus_is_interface = True

804

1128

func._dbus_interface = dbus_interface

805

1129

func._dbus_name = dbus_interface

806

1130

return func

1131

807

1132

return decorator

808

1133

809

1134

811

1136

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

812

1137

Usage:

813

1138

1139

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

1140

"org.freedesktop.DBus.Property."

1141

"EmitsChangedSignal": "false"})

814

1142

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

815

1143

access="r")

816

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

817

"org.freedesktop.DBus.Property."

818

"EmitsChangedSignal": "false"})

819

1144

def Property_dbus_property(self):

820

1145

return dbus.Boolean(False)

1146

1147

See also the DBusObjectWithAnnotations class.

821

1148

"""

1149

822

1150

def decorator(func):

823

1151

func._dbus_annotations = annotations

824

1152

return func

1153

825

1154

return decorator

826

1155

827

1156

828

1157

class DBusPropertyException(dbus.exceptions.DBusException):

829

1158

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

830

1159

"""

831

def __unicode__(self):

832

return unicode(str(self))

1160

pass

833

1161

834

1162

835

1163

class DBusPropertyAccessException(DBusPropertyException):

844

1172

pass

845

1173

846

1174

847

class DBusObjectWithProperties(dbus.service.Object):

848

"""A D-Bus object with properties.

1175

class DBusObjectWithAnnotations(dbus.service.Object):

1176

"""A D-Bus object with annotations.

849

1177

850

Classes inheriting from this can use the dbus_service_property

851

decorator to expose methods as D-Bus properties. It exposes the

852

standard Get(), Set(), and GetAll() methods on the D-Bus.

1178

Classes inheriting from this can use the dbus_annotations

1179

decorator to add annotations to methods or signals.

853

1180

"""

854

1181

855

1182

@staticmethod

859

1186

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

860

1187

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

861

1188

"""

862

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

1189

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

863

1190

False)

864

1191

865

1192

def _get_all_dbus_things(self, thing):

866

1193

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

867

1194

"""

868

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

869

name),

1195

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

870

1196

athing.__get__(self))

871

1197

for cls in self.__class__.__mro__

872

1198

for name, athing in

873

inspect.getmembers(cls,

874

self._is_dbus_thing(thing)))

1199

inspect.getmembers(cls, self._is_dbus_thing(thing)))

1200

1201

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1202

out_signature = "s",

1203

path_keyword = 'object_path',

1204

connection_keyword = 'connection')

1205

def Introspect(self, object_path, connection):

1206

"""Overloading of standard D-Bus method.

1207

1208

Inserts annotation tags on methods and signals.

1209

"""

1210

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

1211

connection)

1212

try:

1213

document = xml.dom.minidom.parseString(xmlstring)

1214

1215

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

1216

# Add annotation tags

1217

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

1218

for tag in if_tag.getElementsByTagName(typ):

1219

annots = dict()

1220

for name, prop in (self.

1221

_get_all_dbus_things(typ)):

1222

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

1223

and prop._dbus_interface

1224

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

1225

annots.update(getattr(

1226

prop, "_dbus_annotations", {}))

1227

for name, value in annots.items():

1228

ann_tag = document.createElement(

1229

"annotation")

1230

ann_tag.setAttribute("name", name)

1231

ann_tag.setAttribute("value", value)

1232

tag.appendChild(ann_tag)

1233

# Add interface annotation tags

1234

for annotation, value in dict(

1235

itertools.chain.from_iterable(

1236

annotations().items()

1237

for name, annotations

1238

in self._get_all_dbus_things("interface")

1239

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

1240

)).items():

1241

ann_tag = document.createElement("annotation")

1242

ann_tag.setAttribute("name", annotation)

1243

ann_tag.setAttribute("value", value)

1244

if_tag.appendChild(ann_tag)

1245

# Fix argument name for the Introspect method itself

1246

if (if_tag.getAttribute("name")

1247

== dbus.INTROSPECTABLE_IFACE):

1248

for cn in if_tag.getElementsByTagName("method"):

1249

if cn.getAttribute("name") == "Introspect":

1250

for arg in cn.getElementsByTagName("arg"):

1251

if (arg.getAttribute("direction")

1252

== "out"):

1253

arg.setAttribute("name",

1254

"xml_data")

1255

xmlstring = document.toxml("utf-8")

1256

document.unlink()

1257

except (AttributeError, xml.dom.DOMException,

1258

xml.parsers.expat.ExpatError) as error:

1259

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

1260

exc_info=error)

1261

return xmlstring

1262

1263

1264

class DBusObjectWithProperties(DBusObjectWithAnnotations):

1265

"""A D-Bus object with properties.

1266

1267

Classes inheriting from this can use the dbus_service_property

1268

decorator to expose methods as D-Bus properties. It exposes the

1269

standard Get(), Set(), and GetAll() methods on the D-Bus.

1270

"""

875

1271

876

1272

def _get_dbus_property(self, interface_name, property_name):

877

1273

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

878

1274

property with the specified name and interface.

879

1275

"""

880

for cls in self.__class__.__mro__:

881

for name, value in (inspect.getmembers

882

(cls,

883

self._is_dbus_thing("property"))):

1276

for cls in self.__class__.__mro__:

1277

for name, value in inspect.getmembers(

1278

cls, self._is_dbus_thing("property")):

884

1279

if (value._dbus_name == property_name

885

1280

and value._dbus_interface == interface_name):

886

1281

return value.__get__(self)

887

1282

888

1283

# No such property

889

raise DBusPropertyNotFound(self.dbus_object_path + ":"

890

+ interface_name + "."

891

+ property_name)

892

893

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

1284

raise DBusPropertyNotFound("{}:{}.{}".format(

1285

self.dbus_object_path, interface_name, property_name))

1286

1287

@classmethod

1288

def _get_all_interface_names(cls):

1289

"""Get a sequence of all interfaces supported by an object"""

1290

return (name for name in set(getattr(getattr(x, attr),

1291

"_dbus_interface", None)

1292

for x in (inspect.getmro(cls))

1293

for attr in dir(x))

1294

if name is not None)

1295

1296

@dbus.service.method(dbus.PROPERTIES_IFACE,

1297

in_signature="ss",

894

1298

out_signature="v")

895

1299

def Get(self, interface_name, property_name):

896

1300

"""Standard D-Bus property Get() method, see D-Bus standard.

914

1318

# The byte_arrays option is not supported yet on

915

1319

# signatures other than "ay".

916

1320

if prop._dbus_signature != "ay":

917

raise ValueError

1321

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

1322

"'ay' signature {!r}"

1323

.format(prop._dbus_signature))

918

1324

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

919

1325

for byte in value))

920

1326

prop(value)

921

1327

922

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

1328

@dbus.service.method(dbus.PROPERTIES_IFACE,

1329

in_signature="s",

923

1330

out_signature="a{sv}")

924

1331

def GetAll(self, interface_name):

925

1332

"""Standard D-Bus property GetAll() method, see D-Bus

940

1347

if not hasattr(value, "variant_level"):

941

1348

properties[name] = value

942

1349

continue

943

properties[name] = type(value)(value, variant_level=

944

value.variant_level+1)

1350

properties[name] = type(value)(

1351

value, variant_level = value.variant_level + 1)

945

1352

return dbus.Dictionary(properties, signature="sv")

946

1353

1354

@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")

1355

def PropertiesChanged(self, interface_name, changed_properties,

1356

invalidated_properties):

1357

"""Standard D-Bus PropertiesChanged() signal, see D-Bus

1358

standard.

1359

"""

1360

pass

1361

947

1362

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

948

1363

out_signature="s",

949

1364

path_keyword='object_path',

953

1368

954

1369

Inserts property tags and interface annotation tags.

955

1370

"""

956

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

957

connection)

1371

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1372

object_path,

1373

connection)

958

1374

try:

959

1375

document = xml.dom.minidom.parseString(xmlstring)

1376

960

1377

def make_tag(document, name, prop):

961

1378

e = document.createElement("property")

962

1379

e.setAttribute("name", name)

963

1380

e.setAttribute("type", prop._dbus_signature)

964

1381

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

965

1382

return e

1383

966

1384

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

967

1385

# Add property tags

968

1386

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

971

1389

if prop._dbus_interface

972

1390

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

973

1391

if_tag.appendChild(tag)

974

# Add annotation tags

975

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

976

for tag in if_tag.getElementsByTagName(typ):

977

annots = dict()

978

for name, prop in (self.

979

_get_all_dbus_things(typ)):

980

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

981

and prop._dbus_interface

982

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

983

annots.update(getattr

984

(prop,

985

"_dbus_annotations",

986

{}))

987

for name, value in annots.iteritems():

988

ann_tag = document.createElement(

989

"annotation")

990

ann_tag.setAttribute("name", name)

991

ann_tag.setAttribute("value", value)

992

tag.appendChild(ann_tag)

993

# Add interface annotation tags

994

for annotation, value in dict(

995

itertools.chain.from_iterable(

996

annotations().iteritems()

997

for name, annotations in

998

self._get_all_dbus_things("interface")

999

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

1000

)).iteritems():

1001

ann_tag = document.createElement("annotation")

1002

ann_tag.setAttribute("name", annotation)

1003

ann_tag.setAttribute("value", value)

1004

if_tag.appendChild(ann_tag)

1392

# Add annotation tags for properties

1393

for tag in if_tag.getElementsByTagName("property"):

1394

annots = dict()

1395

for name, prop in self._get_all_dbus_things(

1396

"property"):

1397

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

1398

and prop._dbus_interface

1399

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

1400

annots.update(getattr(

1401

prop, "_dbus_annotations", {}))

1402

for name, value in annots.items():

1403

ann_tag = document.createElement(

1404

"annotation")

1405

ann_tag.setAttribute("name", name)

1406

ann_tag.setAttribute("value", value)

1407

tag.appendChild(ann_tag)

1005

1408

# Add the names to the return values for the

1006

1409

# "org.freedesktop.DBus.Properties" methods

1007

1410

if (if_tag.getAttribute("name")

1025

1428

exc_info=error)

1026

1429

return xmlstring

1027

1430

1431

try:

1432

dbus.OBJECT_MANAGER_IFACE

1433

except AttributeError:

1434

dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"

1435

1436

class DBusObjectWithObjectManager(DBusObjectWithAnnotations):

1437

"""A D-Bus object with an ObjectManager.

1438

1439

Classes inheriting from this exposes the standard

1440

GetManagedObjects call and the InterfacesAdded and

1441

InterfacesRemoved signals on the standard

1442

"org.freedesktop.DBus.ObjectManager" interface.

1443

1444

Note: No signals are sent automatically; they must be sent

1445

manually.

1446

"""

1447

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

1448

out_signature = "a{oa{sa{sv}}}")

1449

def GetManagedObjects(self):

1450

"""This function must be overridden"""

1451

raise NotImplementedError()

1452

1453

@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,

1454

signature = "oa{sa{sv}}")

1455

def InterfacesAdded(self, object_path, interfaces_and_properties):

1456

pass

1457

1458

@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature = "oas")

1459

def InterfacesRemoved(self, object_path, interfaces):

1460

pass

1461

1462

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1463

out_signature = "s",

1464

path_keyword = 'object_path',

1465

connection_keyword = 'connection')

1466

def Introspect(self, object_path, connection):

1467

"""Overloading of standard D-Bus method.

1468

1469

Override return argument name of GetManagedObjects to be

1470

"objpath_interfaces_and_properties"

1471

"""

1472

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1473

object_path,

1474

connection)

1475

try:

1476

document = xml.dom.minidom.parseString(xmlstring)

1477

1478

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

1479

# Fix argument name for the GetManagedObjects method

1480

if (if_tag.getAttribute("name")

1481

== dbus.OBJECT_MANAGER_IFACE):

1482

for cn in if_tag.getElementsByTagName("method"):

1483

if (cn.getAttribute("name")

1484

== "GetManagedObjects"):

1485

for arg in cn.getElementsByTagName("arg"):

1486

if (arg.getAttribute("direction")

1487

== "out"):

1488

arg.setAttribute(

1489

"name",

1490

"objpath_interfaces"

1491

"_and_properties")

1492

xmlstring = document.toxml("utf-8")

1493

document.unlink()

1494

except (AttributeError, xml.dom.DOMException,

1495

xml.parsers.expat.ExpatError) as error:

1496

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

1497

exc_info = error)

1498

return xmlstring

1028

1499

1029

1500

def datetime_to_dbus(dt, variant_level=0):

1030

1501

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

1031

1502

if dt is None:

1032

1503

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

1033

return dbus.String(dt.isoformat(),

1034

variant_level=variant_level)

1504

return dbus.String(dt.isoformat(), variant_level=variant_level)

1035

1505

1036

1506

1037

1507

def alternate_dbus_interfaces(alt_interface_names, deprecate=True):

1057

1527

(from DBusObjectWithProperties) and interfaces (from the

1058

1528

dbus_interface_annotations decorator).

1059

1529

"""

1530

1060

1531

def wrapper(cls):

1061

1532

for orig_interface_name, alt_interface_name in (

1062

alt_interface_names.iteritems()):

1533

alt_interface_names.items()):

1063

1534

attr = {}

1064

1535

interface_names = set()

1065

1536

# Go though all attributes of the class

1067

1538

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

1068

1539

# with the wrong interface name

1069

1540

if (not hasattr(attribute, "_dbus_interface")

1070

or not attribute._dbus_interface

1071

.startswith(orig_interface_name)):

1541

or not attribute._dbus_interface.startswith(

1542

orig_interface_name)):

1072

1543

continue

1073

1544

# Create an alternate D-Bus interface name based on

1074

1545

# the current name

1075

alt_interface = (attribute._dbus_interface

1076

.replace(orig_interface_name,

1077

alt_interface_name))

1546

alt_interface = attribute._dbus_interface.replace(

1547

orig_interface_name, alt_interface_name)

1078

1548

interface_names.add(alt_interface)

1079

1549

# Is this a D-Bus signal?

1080

1550

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

1081

1551

# Extract the original non-method undecorated

1082

1552

# function by black magic

1083

nonmethod_func = (dict(

1553

if sys.version_info.major == 2:

1554

nonmethod_func = (dict(

1084

1555

zip(attribute.func_code.co_freevars,

1085

attribute.__closure__))["func"]

1086

.cell_contents)

1556

attribute.__closure__))

1557

["func"].cell_contents)

1558

else:

1559

nonmethod_func = (dict(

1560

zip(attribute.__code__.co_freevars,

1561

attribute.__closure__))

1562

["func"].cell_contents)

1087

1563

# Create a new, but exactly alike, function

1088

1564

# object, and decorate it to be a new D-Bus signal

1089

1565

# with the alternate D-Bus interface name

1090

new_function = (dbus.service.signal

1091

(alt_interface,

1092

attribute._dbus_signature)

1093

(types.FunctionType(

1094

nonmethod_func.func_code,

1095

nonmethod_func.func_globals,

1096

nonmethod_func.func_name,

1097

nonmethod_func.func_defaults,

1098

nonmethod_func.func_closure)))

1566

new_function = copy_function(nonmethod_func)

1567

new_function = (dbus.service.signal(

1568

alt_interface,

1569

attribute._dbus_signature)(new_function))

1099

1570

# Copy annotations, if any

1100

1571

try:

1101

new_function._dbus_annotations = (

1102

dict(attribute._dbus_annotations))

1572

new_function._dbus_annotations = dict(

1573

attribute._dbus_annotations)

1103

1574

except AttributeError:

1104

1575

pass

1105

1576

# Define a creator of a function to call both the

1110

1581

"""This function is a scope container to pass

1111

1582

func1 and func2 to the "call_both" function

1112

1583

outside of its arguments"""

1584

1585

@functools.wraps(func2)

1113

1586

def call_both(*args, **kwargs):

1114

1587

"""This function will emit two D-Bus

1115

1588

signals by calling func1 and func2"""

1116

1589

func1(*args, **kwargs)

1117

1590

func2(*args, **kwargs)

1591

# Make wrapper function look like a D-Bus signal

1592

for name, attr in inspect.getmembers(func2):

1593

if name.startswith("_dbus_"):

1594

setattr(call_both, name, attr)

1595

1118

1596

return call_both

1119

1597

# Create the "call_both" function and add it to

1120

1598

# the class

1125

1603

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

1126

1604

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

1127

1605

# to the class.

1128

attr[attrname] = (dbus.service.method

1129

(alt_interface,

1130

attribute._dbus_in_signature,

1131

attribute._dbus_out_signature)

1132

(types.FunctionType

1133

(attribute.func_code,

1134

attribute.func_globals,

1135

attribute.func_name,

1136

attribute.func_defaults,

1137

attribute.func_closure)))

1606

attr[attrname] = (

1607

dbus.service.method(

1608

alt_interface,

1609

attribute._dbus_in_signature,

1610

attribute._dbus_out_signature)

1611

(copy_function(attribute)))

1138

1612

# Copy annotations, if any

1139

1613

try:

1140

attr[attrname]._dbus_annotations = (

1141

dict(attribute._dbus_annotations))

1614

attr[attrname]._dbus_annotations = dict(

1615

attribute._dbus_annotations)

1142

1616

except AttributeError:

1143

1617

pass

1144

1618

# Is this a D-Bus property?

1147

1621

# object, and decorate it to be a new D-Bus

1148

1622

# property with the alternate D-Bus interface

1149

1623

# name. Add it to the class.

1150

attr[attrname] = (dbus_service_property

1151

(alt_interface,

1152

attribute._dbus_signature,

1153

attribute._dbus_access,

1154

attribute

1155

._dbus_get_args_options

1156

["byte_arrays"])

1157

(types.FunctionType

1158

(attribute.func_code,

1159

attribute.func_globals,

1160

attribute.func_name,

1161

attribute.func_defaults,

1162

attribute.func_closure)))

1624

attr[attrname] = (dbus_service_property(

1625

alt_interface, attribute._dbus_signature,

1626

attribute._dbus_access,

1627

attribute._dbus_get_args_options

1628

["byte_arrays"])

1629

(copy_function(attribute)))

1163

1630

# Copy annotations, if any

1164

1631

try:

1165

attr[attrname]._dbus_annotations = (

1166

dict(attribute._dbus_annotations))

1632

attr[attrname]._dbus_annotations = dict(

1633

attribute._dbus_annotations)

1167

1634

except AttributeError:

1168

1635

pass

1169

1636

# Is this a D-Bus interface?

1172

1639

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

1173

1640

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

1174

1641

# to the class.

1175

attr[attrname] = (dbus_interface_annotations

1176

(alt_interface)

1177

(types.FunctionType

1178

(attribute.func_code,

1179

attribute.func_globals,

1180

attribute.func_name,

1181

attribute.func_defaults,

1182

attribute.func_closure)))

1642

attr[attrname] = (

1643

dbus_interface_annotations(alt_interface)

1644

(copy_function(attribute)))

1183

1645

if deprecate:

1184

1646

# Deprecate all alternate interfaces

1185

iname="_AlternateDBusNames_interface_annotation{0}"

1647

iname="_AlternateDBusNames_interface_annotation{}"

1186

1648

for interface_name in interface_names:

1649

1187

1650

@dbus_interface_annotations(interface_name)

1188

1651

def func(self):

1189

1652

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

1190

"true" }

1653

"true" }

1191

1654

# Find an unused name

1192

1655

for aname in (iname.format(i)

1193

1656

for i in itertools.count()):

1197

1660

if interface_names:

1198

1661

# Replace the class with a new subclass of it with

1199

1662

# methods, signals, etc. as created above.

1200

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

1201

(cls,), attr)

1663

if sys.version_info.major == 2:

1664

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

1665

(cls, ), attr)

1666

else:

1667

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

1668

(cls, ), attr)

1202

1669

return cls

1670

1203

1671

return wrapper

1204

1672

1205

1673

1206

1674

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

1207

"se.bsnet.fukt.Mandos"})

1675

"se.bsnet.fukt.Mandos"})

1208

1676

class ClientDBus(Client, DBusObjectWithProperties):

1209

1677

"""A Client class using D-Bus

1210

1678

1214

1682

"""

1215

1683

1216

1684

runtime_expansions = (Client.runtime_expansions

1217

+ ("dbus_object_path",))

1685

+ ("dbus_object_path", ))

1686

1687

_interface = "se.recompile.Mandos.Client"

1218

1688

1219

1689

# dbus.service.Object doesn't use super(), so we can't either.

1220

1690

1223

1693

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

1224

1694

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

1225

1695

# the D-Bus

1226

client_object_name = unicode(self.name).translate(

1696

client_object_name = str(self.name).translate(

1227

1697

{ord("."): ord("_"),

1228

1698

ord("-"): ord("_")})

1229

self.dbus_object_path = (dbus.ObjectPath

1230

("/clients/" + client_object_name))

1699

self.dbus_object_path = dbus.ObjectPath(

1700

"/clients/" + client_object_name)

1231

1701

DBusObjectWithProperties.__init__(self, self.bus,

1232

1702

self.dbus_object_path)

1233

1703

1234

def notifychangeproperty(transform_func,

1235

dbus_name, type_func=lambda x: x,

1236

variant_level=1):

1704

def notifychangeproperty(transform_func, dbus_name,

1705

type_func=lambda x: x,

1706

variant_level=1,

1707

invalidate_only=False,

1708

_interface=_interface):

1237

1709

""" Modify a variable so that it's a property which announces

1238

1710

its changes to DBus.

1239

1711

1244

1716

to the D-Bus. Default: no transform

1245

1717

variant_level: D-Bus variant level. Default: 1

1246

1718

"""

1247

attrname = "_{0}".format(dbus_name)

1719

attrname = "_{}".format(dbus_name)

1720

1248

1721

def setter(self, value):

1249

1722

if hasattr(self, "dbus_object_path"):

1250

1723

if (not hasattr(self, attrname) or

1251

1724

type_func(getattr(self, attrname, None))

1252

1725

!= type_func(value)):

1253

dbus_value = transform_func(type_func(value),

1254

variant_level

1255

=variant_level)

1256

self.PropertyChanged(dbus.String(dbus_name),

1257

dbus_value)

1726

if invalidate_only:

1727

self.PropertiesChanged(

1728

_interface, dbus.Dictionary(),

1729

dbus.Array((dbus_name, )))

1730

else:

1731

dbus_value = transform_func(

1732

type_func(value),

1733

variant_level = variant_level)

1734

self.PropertyChanged(dbus.String(dbus_name),

1735

dbus_value)

1736

self.PropertiesChanged(

1737

_interface,

1738

dbus.Dictionary({ dbus.String(dbus_name):

1739

dbus_value }),

1740

dbus.Array())

1258

1741

setattr(self, attrname, value)

1259

1742

1260

1743

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

1266

1749

enabled = notifychangeproperty(dbus.Boolean, "Enabled")

1267

1750

last_enabled = notifychangeproperty(datetime_to_dbus,

1268

1751

"LastEnabled")

1269

checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",

1270

type_func = lambda checker:

1271

checker is not None)

1752

checker = notifychangeproperty(

1753

dbus.Boolean, "CheckerRunning",

1754

type_func = lambda checker: checker is not None)

1272

1755

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1273

1756

"LastCheckedOK")

1274

1757

last_checker_status = notifychangeproperty(dbus.Int16,

1277

1760

datetime_to_dbus, "LastApprovalRequest")

1278

1761

approved_by_default = notifychangeproperty(dbus.Boolean,

1279

1762

"ApprovedByDefault")

1280

approval_delay = notifychangeproperty(dbus.UInt64,

1281

"ApprovalDelay",

1282

type_func =

1283

timedelta_to_milliseconds)

1763

approval_delay = notifychangeproperty(

1764

dbus.UInt64, "ApprovalDelay",

1765

type_func = lambda td: td.total_seconds() * 1000)

1284

1766

approval_duration = notifychangeproperty(

1285

1767

dbus.UInt64, "ApprovalDuration",

1286

type_func = timedelta_to_milliseconds)

1768

type_func = lambda td: td.total_seconds() * 1000)

1287

1769

host = notifychangeproperty(dbus.String, "Host")

1288

timeout = notifychangeproperty(dbus.UInt64, "Timeout",

1289

type_func =

1290

timedelta_to_milliseconds)

1770

timeout = notifychangeproperty(

1771

dbus.UInt64, "Timeout",

1772

type_func = lambda td: td.total_seconds() * 1000)

1291

1773

extended_timeout = notifychangeproperty(

1292

1774

dbus.UInt64, "ExtendedTimeout",

1293

type_func = timedelta_to_milliseconds)

1294

interval = notifychangeproperty(dbus.UInt64,

1295

"Interval",

1296

type_func =

1297

timedelta_to_milliseconds)

1775

type_func = lambda td: td.total_seconds() * 1000)

1776

interval = notifychangeproperty(

1777

dbus.UInt64, "Interval",

1778

type_func = lambda td: td.total_seconds() * 1000)

1298

1779

checker_command = notifychangeproperty(dbus.String, "Checker")

1780

secret = notifychangeproperty(dbus.ByteArray, "Secret",

1781

invalidate_only=True)

1299

1782

1300

1783

del notifychangeproperty

1301

1784

1308

1791

DBusObjectWithProperties.__del__(self, *args, **kwargs)

1309

1792

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

1310

1793

1311

def checker_callback(self, pid, condition, command,

1312

*args, **kwargs):

1313

self.checker_callback_tag = None

1314

self.checker = None

1315

if os.WIFEXITED(condition):

1316

exitstatus = os.WEXITSTATUS(condition)

1794

def checker_callback(self, source, condition,

1795

connection, command, *args, **kwargs):

1796

ret = Client.checker_callback(self, source, condition,

1797

connection, command, *args,

1798

**kwargs)

1799

exitstatus = self.last_checker_status

1800

if exitstatus >= 0:

1317

1801

# Emit D-Bus signal

1318

1802

self.CheckerCompleted(dbus.Int16(exitstatus),

1319

dbus.Int64(condition),

1803

# This is specific to GNU libC

1804

dbus.Int64(exitstatus << 8),

1320

1805

dbus.String(command))

1321

1806

else:

1322

1807

# Emit D-Bus signal

1323

1808

self.CheckerCompleted(dbus.Int16(-1),

1324

dbus.Int64(condition),

1809

dbus.Int64(

1810

# This is specific to GNU libC

1811

(exitstatus << 8)

1812

| self.last_checker_signal),

1325

1813

dbus.String(command))

1326

1327

return Client.checker_callback(self, pid, condition, command,

1328

*args, **kwargs)

1814

return ret

1329

1815

1330

1816

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

1331

old_checker = self.checker

1332

if self.checker is not None:

1333

old_checker_pid = self.checker.pid

1334

else:

1335

old_checker_pid = None

1817

old_checker_pid = getattr(self.checker, "pid", None)

1336

1818

r = Client.start_checker(self, *args, **kwargs)

1337

1819

# Only if new checker process was started

1338

1820

if (self.checker is not None

1347

1829

1348

1830

def approve(self, value=True):

1349

1831

self.approved = value

1350

gobject.timeout_add(timedelta_to_milliseconds

1351

(self.approval_duration),

1352

self._reset_approved)

1832

GLib.timeout_add(int(self.approval_duration.total_seconds()

1833

* 1000), self._reset_approved)

1353

1834

self.send_changedstate()

1354

1835

1355

1836

## D-Bus methods, signals & properties

1356

_interface = "se.recompile.Mandos.Client"

1357

1837

1358

1838

## Interfaces

1359

1839

1360

@dbus_interface_annotations(_interface)

1361

def _foo(self):

1362

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

1363

"false"}

1364

1365

1840

## Signals

1366

1841

1367

1842

# CheckerCompleted - signal

1377

1852

pass

1378

1853

1379

1854

# PropertyChanged - signal

1855

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

1380

1856

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

1381

1857

def PropertyChanged(self, property, value):

1382

1858

"D-Bus signal"

1416

1892

self.checked_ok()

1417

1893

1418

1894

# Enable - method

1895

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

1419

1896

@dbus.service.method(_interface)

1420

1897

def Enable(self):

1421

1898

"D-Bus method"

1422

1899

self.enable()

1423

1900

1424

1901

# StartChecker - method

1902

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

1425

1903

@dbus.service.method(_interface)

1426

1904

def StartChecker(self):

1427

1905

"D-Bus method"

1428

1906

self.start_checker()

1429

1907

1430

1908

# Disable - method

1909

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

1431

1910

@dbus.service.method(_interface)

1432

1911

def Disable(self):

1433

1912

"D-Bus method"

1434

1913

self.disable()

1435

1914

1436

1915

# StopChecker - method

1916

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

1437

1917

@dbus.service.method(_interface)

1438

1918

def StopChecker(self):

1439

1919

self.stop_checker()

1446

1926

return dbus.Boolean(bool(self.approvals_pending))

1447

1927

1448

1928

# ApprovedByDefault - property

1449

@dbus_service_property(_interface, signature="b",

1929

@dbus_service_property(_interface,

1930

signature="b",

1450

1931

access="readwrite")

1451

1932

def ApprovedByDefault_dbus_property(self, value=None):

1452

1933

if value is None: # get

1454

1935

self.approved_by_default = bool(value)

1455

1936

1456

1937

# ApprovalDelay - property

1457

@dbus_service_property(_interface, signature="t",

1938

@dbus_service_property(_interface,

1939

signature="t",

1458

1940

access="readwrite")

1459

1941

def ApprovalDelay_dbus_property(self, value=None):

1460

1942

if value is None: # get

1461

return dbus.UInt64(self.approval_delay_milliseconds())

1943

return dbus.UInt64(self.approval_delay.total_seconds()

1944

* 1000)

1462

1945

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

1463

1946

1464

1947

# ApprovalDuration - property

1465

@dbus_service_property(_interface, signature="t",

1948

@dbus_service_property(_interface,

1949

signature="t",

1466

1950

access="readwrite")

1467

1951

def ApprovalDuration_dbus_property(self, value=None):

1468

1952

if value is None: # get

1469

return dbus.UInt64(timedelta_to_milliseconds(

1470

self.approval_duration))

1953

return dbus.UInt64(self.approval_duration.total_seconds()

1954

* 1000)

1471

1955

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

1472

1956

1473

1957

# Name - property

1958

@dbus_annotations(

1959

{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})

1474

1960

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

1475

1961

def Name_dbus_property(self):

1476

1962

return dbus.String(self.name)

1477

1963

1478

1964

# Fingerprint - property

1965

@dbus_annotations(

1966

{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})

1479

1967

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

1480

1968

def Fingerprint_dbus_property(self):

1481

1969

return dbus.String(self.fingerprint)

1482

1970

1483

1971

# Host - property

1484

@dbus_service_property(_interface, signature="s",

1972

@dbus_service_property(_interface,

1973

signature="s",

1485

1974

access="readwrite")

1486

1975

def Host_dbus_property(self, value=None):

1487

1976

if value is None: # get

1488

1977

return dbus.String(self.host)

1489

self.host = unicode(value)

1978

self.host = str(value)

1490

1979

1491

1980

# Created - property

1981

@dbus_annotations(

1982

{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})

1492

1983

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

1493

1984

def Created_dbus_property(self):

1494

1985

return datetime_to_dbus(self.created)

1499

1990

return datetime_to_dbus(self.last_enabled)

1500

1991

1501

1992

# Enabled - property

1502

@dbus_service_property(_interface, signature="b",

1993

@dbus_service_property(_interface,

1994

signature="b",

1503

1995

access="readwrite")

1504

1996

def Enabled_dbus_property(self, value=None):

1505

1997

if value is None: # get

1510

2002

self.disable()

1511

2003

1512

2004

# LastCheckedOK - property

1513

@dbus_service_property(_interface, signature="s",

2005

@dbus_service_property(_interface,

2006

signature="s",

1514

2007

access="readwrite")

1515

2008

def LastCheckedOK_dbus_property(self, value=None):

1516

2009

if value is not None:

1519

2012

return datetime_to_dbus(self.last_checked_ok)

1520

2013

1521

2014

# LastCheckerStatus - property

1522

@dbus_service_property(_interface, signature="n",

1523

access="read")

2015

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

1524

2016

def LastCheckerStatus_dbus_property(self):

1525

2017

return dbus.Int16(self.last_checker_status)

1526

2018

1535

2027

return datetime_to_dbus(self.last_approval_request)

1536

2028

1537

2029

# Timeout - property

1538

@dbus_service_property(_interface, signature="t",

2030

@dbus_service_property(_interface,

2031

signature="t",

1539

2032

access="readwrite")

1540

2033

def Timeout_dbus_property(self, value=None):

1541

2034

if value is None: # get

1542

return dbus.UInt64(self.timeout_milliseconds())

2035

return dbus.UInt64(self.timeout.total_seconds() * 1000)

1543

2036

old_timeout = self.timeout

1544

2037

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

1545

2038

# Reschedule disabling

1553

2046

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

1554

2047

is None):

1555

2048

return

1556

gobject.source_remove(self.disable_initiator_tag)

1557

self.disable_initiator_tag = (

1558

gobject.timeout_add(

1559

timedelta_to_milliseconds(self.expires - now),

1560

self.disable))

2049

GLib.source_remove(self.disable_initiator_tag)

2050

self.disable_initiator_tag = GLib.timeout_add(

2051

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

2052

self.disable)

1561

2053

1562

2054

# ExtendedTimeout - property

1563

@dbus_service_property(_interface, signature="t",

2055

@dbus_service_property(_interface,

2056

signature="t",

1564

2057

access="readwrite")

1565

2058

def ExtendedTimeout_dbus_property(self, value=None):

1566

2059

if value is None: # get

1567

return dbus.UInt64(self.extended_timeout_milliseconds())

2060

return dbus.UInt64(self.extended_timeout.total_seconds()

2061

* 1000)

1568

2062

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

1569

2063

1570

2064

# Interval - property

1571

@dbus_service_property(_interface, signature="t",

2065

@dbus_service_property(_interface,

2066

signature="t",

1572

2067

access="readwrite")

1573

2068

def Interval_dbus_property(self, value=None):

1574

2069

if value is None: # get

1575

return dbus.UInt64(self.interval_milliseconds())

2070

return dbus.UInt64(self.interval.total_seconds() * 1000)

1576

2071

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

1577

2072

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

1578

2073

return

1579

2074

if self.enabled:

1580

2075

# Reschedule checker run

1581

gobject.source_remove(self.checker_initiator_tag)

1582

self.checker_initiator_tag = (gobject.timeout_add

1583

(value, self.start_checker))

1584

self.start_checker() # Start one now, too

2076

GLib.source_remove(self.checker_initiator_tag)

2077

self.checker_initiator_tag = GLib.timeout_add(

2078

value, self.start_checker)

2079

self.start_checker() # Start one now, too

1585

2080

1586

2081

# Checker - property

1587

@dbus_service_property(_interface, signature="s",

2082

@dbus_service_property(_interface,

2083

signature="s",

1588

2084

access="readwrite")

1589

2085

def Checker_dbus_property(self, value=None):

1590

2086

if value is None: # get

1591

2087

return dbus.String(self.checker_command)

1592

self.checker_command = unicode(value)

2088

self.checker_command = str(value)

1593

2089

1594

2090

# CheckerRunning - property

1595

@dbus_service_property(_interface, signature="b",

2091

@dbus_service_property(_interface,

2092

signature="b",

1596

2093

access="readwrite")

1597

2094

def CheckerRunning_dbus_property(self, value=None):

1598

2095

if value is None: # get

1603

2100

self.stop_checker()

1604

2101

1605

2102

# ObjectPath - property

2103

@dbus_annotations(

2104

{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",

2105

"org.freedesktop.DBus.Deprecated": "true"})

1606

2106

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

1607

2107

def ObjectPath_dbus_property(self):

1608

2108

return self.dbus_object_path # is already a dbus.ObjectPath

1609

2109

1610

2110

# Secret = property

1611

@dbus_service_property(_interface, signature="ay",

1612

access="write", byte_arrays=True)

2111

@dbus_annotations(

2112

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

2113

"invalidates"})

2114

@dbus_service_property(_interface,

2115

signature="ay",

2116

access="write",

2117

byte_arrays=True)

1613

2118

def Secret_dbus_property(self, value):

1614

self.secret = str(value)

2119

self.secret = bytes(value)

1615

2120

1616

2121

del _interface

1617

2122

1621

2126

self._pipe = child_pipe

1622

2127

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

1623

2128

if not self._pipe.recv():

1624

raise KeyError()

2129

raise KeyError(fpr)

1625

2130

1626

2131

def __getattribute__(self, name):

1627

2132

if name == '_pipe':

1631

2136

if data[0] == 'data':

1632

2137

return data[1]

1633

2138

if data[0] == 'function':

2139

1634

2140

def func(*args, **kwargs):

1635

2141

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

1636

2142

return self._pipe.recv()[1]

2143

1637

2144

return func

1638

2145

1639

2146

def __setattr__(self, name, value):

1651

2158

def handle(self):

1652

2159

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

1653

2160

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

1654

unicode(self.client_address))

2161

str(self.client_address))

1655

2162

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

1656

2163

self.server.child_pipe.fileno())

1657

2164

1658

session = (gnutls.connection

1659

.ClientSession(self.request,

1660

gnutls.connection

1661

.X509Credentials()))

1662

1663

# Note: gnutls.connection.X509Credentials is really a

1664

# generic GnuTLS certificate credentials object so long as

1665

# no X.509 keys are added to it. Therefore, we can use it

1666

# here despite using OpenPGP certificates.

2165

session = gnutls.ClientSession(self.request)

1667

2166

1668

2167

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

1669

2168

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

1673

2172

priority = self.server.gnutls_priority

1674

2173

if priority is None:

1675

2174

priority = "NORMAL"

1676

(gnutls.library.functions

1677

.gnutls_priority_set_direct(session._c_object,

1678

priority, None))

2175

gnutls.priority_set_direct(session._c_object, priority,

2176

None)

1679

2177

1680

2178

# Start communication using the Mandos protocol

1681

2179

# Get protocol number

1683

2181

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

1684

2182

try:

1685

2183

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

1686

raise RuntimeError

2184

raise RuntimeError(line)

1687

2185

except (ValueError, IndexError, RuntimeError) as error:

1688

2186

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

1689

2187

return

1691

2189

# Start GnuTLS connection

1692

2190

try:

1693

2191

session.handshake()

1694

except gnutls.errors.GNUTLSError as error:

2192

except gnutls.Error as error:

1695

2193

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

1696

2194

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

1697

2195

# established. Just abandon the request.

1701

2199

approval_required = False

1702

2200

try:

1703

2201

try:

1704

fpr = self.fingerprint(self.peer_certificate

1705

(session))

1706

except (TypeError,

1707

gnutls.errors.GNUTLSError) as error:

2202

fpr = self.fingerprint(

2203

self.peer_certificate(session))

2204

except (TypeError, gnutls.Error) as error:

1708

2205

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

1709

2206

return

1710

2207

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

1723

2220

while True:

1724

2221

if not client.enabled:

1725

2222

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

1726

client.name)

2223

client.name)

1727

2224

if self.server.use_dbus:

1728

2225

# Emit D-Bus signal

1729

2226

client.Rejected("Disabled")

1738

2235

if self.server.use_dbus:

1739

2236

# Emit D-Bus signal

1740

2237

client.NeedApproval(

1741

client.approval_delay_milliseconds(),

1742

client.approved_by_default)

2238

client.approval_delay.total_seconds()

2239

* 1000, client.approved_by_default)

1743

2240

else:

1744

2241

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

1745

2242

client.name)

1751

2248

#wait until timeout or approved

1752

2249

time = datetime.datetime.now()

1753

2250

client.changedstate.acquire()

1754

client.changedstate.wait(

1755

float(timedelta_to_milliseconds(delay)

1756

/ 1000))

2251

client.changedstate.wait(delay.total_seconds())

1757

2252

client.changedstate.release()

1758

2253

time2 = datetime.datetime.now()

1759

2254

if (time2 - time) >= delay:

1770

2265

else:

1771

2266

delay -= time2 - time

1772

2267

1773

sent_size = 0

1774

while sent_size < len(client.secret):

1775

try:

1776

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

1777

except gnutls.errors.GNUTLSError as error:

1778

logger.warning("gnutls send failed",

1779

exc_info=error)

1780

return

1781

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

1782

sent, len(client.secret)

1783

- (sent_size + sent))

1784

sent_size += sent

2268

try:

2269

session.send(client.secret)

2270

except gnutls.Error as error:

2271

logger.warning("gnutls send failed",

2272

exc_info = error)

2273

return

1785

2274

1786

2275

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

1787

2276

# bump the timeout using extended_timeout

1795

2284

client.approvals_pending -= 1

1796

2285

try:

1797

2286

session.bye()

1798

except gnutls.errors.GNUTLSError as error:

2287

except gnutls.Error as error:

1799

2288

logger.warning("GnuTLS bye failed",

1800

2289

exc_info=error)

1801

2290

1803

2292

def peer_certificate(session):

1804

2293

"Return the peer's OpenPGP certificate as a bytestring"

1805

2294

# If not an OpenPGP certificate...

1806

if (gnutls.library.functions

1807

.gnutls_certificate_type_get(session._c_object)

1808

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

1809

# ...do the normal thing

1810

return session.peer_certificate

2295

if (gnutls.certificate_type_get(session._c_object)

2296

!= gnutls.CRT_OPENPGP):

2297

# ...return invalid data

2298

return b""

1811

2299

list_size = ctypes.c_uint(1)

1812

cert_list = (gnutls.library.functions

1813

.gnutls_certificate_get_peers

2300

cert_list = (gnutls.certificate_get_peers

1814

2301

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

1815

2302

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

1816

raise gnutls.errors.GNUTLSError("error getting peer"

1817

" certificate")

2303

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

1818

2304

if list_size.value == 0:

1819

2305

return None

1820

2306

cert = cert_list[0]

1824

2310

def fingerprint(openpgp):

1825

2311

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

1826

2312

# New GnuTLS "datum" with the OpenPGP public key

1827

datum = (gnutls.library.types

1828

.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),

1829

ctypes.POINTER

1830

(ctypes.c_ubyte)),

1831

ctypes.c_uint(len(openpgp))))

2313

datum = gnutls.datum_t(

2314

ctypes.cast(ctypes.c_char_p(openpgp),

2315

ctypes.POINTER(ctypes.c_ubyte)),

2316

ctypes.c_uint(len(openpgp)))

1832

2317

# New empty GnuTLS certificate

1833

crt = gnutls.library.types.gnutls_openpgp_crt_t()

1834

(gnutls.library.functions

1835

.gnutls_openpgp_crt_init(ctypes.byref(crt)))

2318

crt = gnutls.openpgp_crt_t()

2319

gnutls.openpgp_crt_init(ctypes.byref(crt))

1836

2320

# Import the OpenPGP public key into the certificate

1837

(gnutls.library.functions

1838

.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),

1839

gnutls.library.constants

1840

.GNUTLS_OPENPGP_FMT_RAW))

2321

gnutls.openpgp_crt_import(crt, ctypes.byref(datum),

2322

gnutls.OPENPGP_FMT_RAW)

1841

2323

# Verify the self signature in the key

1842

2324

crtverify = ctypes.c_uint()

1843

(gnutls.library.functions

1844

.gnutls_openpgp_crt_verify_self(crt, 0,

1845

ctypes.byref(crtverify)))

2325

gnutls.openpgp_crt_verify_self(crt, 0,

2326

ctypes.byref(crtverify))

1846

2327

if crtverify.value != 0:

1847

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1848

raise (gnutls.errors.CertificateSecurityError

1849

("Verify failed"))

2328

gnutls.openpgp_crt_deinit(crt)

2329

raise gnutls.CertificateSecurityError("Verify failed")

1850

2330

# New buffer for the fingerprint

1851

2331

buf = ctypes.create_string_buffer(20)

1852

2332

buf_len = ctypes.c_size_t()

1853

2333

# Get the fingerprint from the certificate into the buffer

1854

(gnutls.library.functions

1855

.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),

1856

ctypes.byref(buf_len)))

2334

gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),

2335

ctypes.byref(buf_len))

1857

2336

# Deinit the certificate

1858

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

2337

gnutls.openpgp_crt_deinit(crt)

1859

2338

# Convert the buffer to a Python bytestring

1860

2339

fpr = ctypes.string_at(buf, buf_len.value)

1861

2340

# Convert the bytestring to hexadecimal notation

1865

2344

1866

2345

class MultiprocessingMixIn(object):

1867

2346

"""Like socketserver.ThreadingMixIn, but with multiprocessing"""

2347

1868

2348

def sub_process_main(self, request, address):

1869

2349

try:

1870

2350

self.finish_request(request, address)

1882

2362

1883

2363

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

1884

2364

""" adds a pipe to the MixIn """

2365

1885

2366

def process_request(self, request, client_address):

1886

2367

"""Overrides and wraps the original process_request().

1887

2368

1896

2377

1897

2378

def add_pipe(self, parent_pipe, proc):

1898

2379

"""Dummy function; override as necessary"""

1899

raise NotImplementedError

2380

raise NotImplementedError()

1900

2381

1901

2382

1902

2383

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

1908

2389

interface: None or a network interface name (string)

1909

2390

use_ipv6: Boolean; to use IPv6 or not

1910

2391

"""

2392

1911

2393

def __init__(self, server_address, RequestHandlerClass,

1912

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

2394

interface=None,

2395

use_ipv6=True,

2396

socketfd=None):

1913

2397

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

1914

2398

creating a new one with socket.socket().

1915

2399

"""

1956

2440

self.interface)

1957

2441

else:

1958

2442

try:

1959

self.socket.setsockopt(socket.SOL_SOCKET,

1960

SO_BINDTODEVICE,

1961

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

2443

self.socket.setsockopt(

2444

socket.SOL_SOCKET, SO_BINDTODEVICE,

2445

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

1962

2446

except socket.error as error:

1963

2447

if error.errno == errno.EPERM:

1964

2448

logger.error("No permission to bind to"

1978

2462

if self.address_family == socket.AF_INET6:

1979

2463

any_address = "::" # in6addr_any

1980

2464

else:

1981

any_address = socket.INADDR_ANY

2465

any_address = "0.0.0.0" # INADDR_ANY

1982

2466

self.server_address = (any_address,

1983

2467

self.server_address[1])

1984

2468

elif not self.server_address[1]:

1985

self.server_address = (self.server_address[0],

1986

0)

2469

self.server_address = (self.server_address[0], 0)

1987

2470

# if self.interface:

1988

2471

# self.server_address = (self.server_address[0],

1989

2472

# 0, # port

2001

2484

gnutls_priority GnuTLS priority string

2002

2485

use_dbus: Boolean; to emit D-Bus signals or not

2003

2486

2004

Assumes a gobject.MainLoop event loop.

2487

Assumes a GLib.MainLoop event loop.

2005

2488

"""

2489

2006

2490

def __init__(self, server_address, RequestHandlerClass,

2007

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

2008

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

2491

interface=None,

2492

use_ipv6=True,

2493

clients=None,

2494

gnutls_priority=None,

2495

use_dbus=True,

2496

socketfd=None):

2009

2497

self.enabled = False

2010

2498

self.clients = clients

2011

2499

if self.clients is None:

2017

2505

interface = interface,

2018

2506

use_ipv6 = use_ipv6,

2019

2507

socketfd = socketfd)

2508

2020

2509

def server_activate(self):

2021

2510

if self.enabled:

2022

2511

return socketserver.TCPServer.server_activate(self)

2026

2515

2027

2516

def add_pipe(self, parent_pipe, proc):

2028

2517

# Call "handle_ipc" for both data and EOF events

2029

gobject.io_add_watch(parent_pipe.fileno(),

2030

gobject.IO_IN | gobject.IO_HUP,

2031

functools.partial(self.handle_ipc,

2032

parent_pipe =

2033

parent_pipe,

2034

proc = proc))

2518

GLib.io_add_watch(

2519

parent_pipe.fileno(),

2520

GLib.IO_IN | GLib.IO_HUP,

2521

functools.partial(self.handle_ipc,

2522

parent_pipe = parent_pipe,

2523

proc = proc))

2035

2524

2036

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

2037

proc = None, client_object=None):

2525

def handle_ipc(self, source, condition,

2526

parent_pipe=None,

2527

proc = None,

2528

client_object=None):

2038

2529

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

2039

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

2530

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

2040

2531

# Wait for other process to exit

2041

2532

proc.join()

2042

2533

return False

2049

2540

fpr = request[1]

2050

2541

address = request[2]

2051

2542

2052

for c in self.clients.itervalues():

2543

for c in self.clients.values():

2053

2544

if c.fingerprint == fpr:

2054

2545

client = c

2055

2546

break

2063

2554

parent_pipe.send(False)

2064

2555

return False

2065

2556

2066

gobject.io_add_watch(parent_pipe.fileno(),

2067

gobject.IO_IN | gobject.IO_HUP,

2068

functools.partial(self.handle_ipc,

2069

parent_pipe =

2070

parent_pipe,

2071

proc = proc,

2072

client_object =

2073

client))

2557

GLib.io_add_watch(

2558

parent_pipe.fileno(),

2559

GLib.IO_IN | GLib.IO_HUP,

2560

functools.partial(self.handle_ipc,

2561

parent_pipe = parent_pipe,

2562

proc = proc,

2563

client_object = client))

2074

2564

parent_pipe.send(True)

2075

2565

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

2076

2566

# same fileno

2082

2572

2083

2573

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

2084

2574

funcname)(*args,

2085

**kwargs)))

2575

**kwargs)))

2086

2576

2087

2577

if command == 'getattr':

2088

2578

attrname = request[1]

2089

if callable(client_object.__getattribute__(attrname)):

2090

parent_pipe.send(('function',))

2579

if isinstance(client_object.__getattribute__(attrname),

2580

collections.Callable):

2581

parent_pipe.send(('function', ))

2091

2582

else:

2092

parent_pipe.send(('data', client_object

2093

.__getattribute__(attrname)))

2583

parent_pipe.send((

2584

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

2094

2585

2095

2586

if command == 'setattr':

2096

2587

attrname = request[1]

2127

2618

# avoid excessive use of external libraries.

2128

2619

2129

2620

# New type for defining tokens, syntax, and semantics all-in-one

2130

Token = collections.namedtuple("Token",

2131

("regexp", # To match token; if

2132

# "value" is not None,

2133

# must have a "group"

2134

# containing digits

2135

"value", # datetime.timedelta or

2136

# None

2137

"followers")) # Tokens valid after

2138

# this token

2621

Token = collections.namedtuple("Token", (

2622

"regexp", # To match token; if "value" is not None, must have

2623

# a "group" containing digits

2624

"value", # datetime.timedelta or None

2625

"followers")) # Tokens valid after this token

2139

2626

# RFC 3339 "duration" tokens, syntax, and semantics; taken from

2140

2627

# the "duration" ABNF definition in RFC 3339, Appendix A.

2141

2628

token_end = Token(re.compile(r"$"), None, frozenset())

2142

2629

token_second = Token(re.compile(r"(\d+)S"),

2143

2630

datetime.timedelta(seconds=1),

2144

frozenset((token_end,)))

2631

frozenset((token_end, )))

2145

2632

token_minute = Token(re.compile(r"(\d+)M"),

2146

2633

datetime.timedelta(minutes=1),

2147

2634

frozenset((token_second, token_end)))

2163

2650

frozenset((token_month, token_end)))

2164

2651

token_week = Token(re.compile(r"(\d+)W"),

2165

2652

datetime.timedelta(weeks=1),

2166

frozenset((token_end,)))

2653

frozenset((token_end, )))

2167

2654

token_duration = Token(re.compile(r"P"), None,

2168

2655

frozenset((token_year, token_month,

2169

2656

token_day, token_time,

2170

token_week))),

2657

token_week)))

2171

2658

# Define starting values

2172

2659

value = datetime.timedelta() # Value so far

2173

2660

found_token = None

2174

followers = frozenset(token_duration,) # Following valid tokens

2661

followers = frozenset((token_duration, )) # Following valid tokens

2175

2662

s = duration # String left to parse

2176

2663

# Loop until end token is found

2177

2664

while found_token is not token_end:

2194

2681

break

2195

2682

else:

2196

2683

# No currently valid tokens were found

2197

raise ValueError("Invalid RFC 3339 duration")

2684

raise ValueError("Invalid RFC 3339 duration: {!r}"

2685

.format(duration))

2198

2686

# End token found

2199

2687

return value

2200

2688

2224

2712

timevalue = datetime.timedelta(0)

2225

2713

for s in interval.split():

2226

2714

try:

2227

suffix = unicode(s[-1])

2715

suffix = s[-1]

2228

2716

value = int(s[:-1])

2229

2717

if suffix == "d":

2230

2718

delta = datetime.timedelta(value)

2237

2725

elif suffix == "w":

2238

2726

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

2239

2727

else:

2240

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

2241

.format(suffix))

2242

except (ValueError, IndexError) as e:

2728

raise ValueError("Unknown suffix {!r}".format(suffix))

2729

except IndexError as e:

2243

2730

raise ValueError(*(e.args))

2244

2731

timevalue += delta

2245

2732

return timevalue

2261

2748

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

2262

2749

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

2263

2750

raise OSError(errno.ENODEV,

2264

"{0} not a character device"

2751

"{} not a character device"

2265

2752

.format(os.devnull))

2266

2753

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

2267

2754

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

2277

2764

2278

2765

parser = argparse.ArgumentParser()

2279

2766

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

2280

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

2767

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

2281

2768

help="show version number and exit")

2282

2769

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

2283

2770

help="Bind to interface IF")

2289

2776

help="Run self-test")

2290

2777

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

2291

2778

help="Debug mode; run in foreground and log"

2292

" to terminal")

2779

" to terminal", default=None)

2293

2780

parser.add_argument("--debuglevel", metavar="LEVEL",

2294

2781

help="Debug level for stdout output")

2295

2782

parser.add_argument("--priority", help="GnuTLS"

2302

2789

" files")

2303

2790

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

2304

2791

dest="use_dbus", help="Do not provide D-Bus"

2305

" system bus interface")

2792

" system bus interface", default=None)

2306

2793

parser.add_argument("--no-ipv6", action="store_false",

2307

dest="use_ipv6", help="Do not use IPv6")

2794

dest="use_ipv6", help="Do not use IPv6",

2795

default=None)

2308

2796

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

2309

2797

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

2310

" state")

2798

" state", default=None)

2311

2799

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

2312

2800

help="Specify a file descriptor to a network"

2313

2801

" socket to use instead of creating one")

2314

2802

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

2315

2803

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

2316

2804

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

2317

help="Run in foreground")

2805

help="Run in foreground", default=None)

2806

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

2807

dest="zeroconf", help="Do not use Zeroconf",

2808

default=None)

2318

2809

2319

2810

options = parser.parse_args()

2320

2811

2321

2812

if options.check:

2322

2813

import doctest

2323

doctest.testmod()

2324

sys.exit()

2814

fail_count, test_count = doctest.testmod()

2815

sys.exit(os.EX_OK if fail_count == 0 else 1)

2325

2816

2326

2817

# Default values for config file for server-global settings

2327

2818

server_defaults = { "interface": "",

2329

2820

"port": "",

2330

2821

"debug": "False",

2331

2822

"priority":

2332

"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",

2823

"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"

2824

":+SIGN-DSA-SHA256",

2333

2825

"servicename": "Mandos",

2334

2826

"use_dbus": "True",

2335

2827

"use_ipv6": "True",

2338

2830

"socket": "",

2339

2831

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

2340

2832

"foreground": "False",

2341

}

2833

"zeroconf": "True",

2834

}

2342

2835

2343

2836

# Parse config file for server-global settings

2344

2837

server_config = configparser.SafeConfigParser(server_defaults)

2345

2838

del server_defaults

2346

server_config.read(os.path.join(options.configdir,

2347

"mandos.conf"))

2839

server_config.read(os.path.join(options.configdir, "mandos.conf"))

2348

2840

# Convert the SafeConfigParser object to a dict

2349

2841

server_settings = server_config.defaults()

2350

2842

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

2368

2860

# Override the settings from the config file with command line

2369

2861

# options, if set.

2370

2862

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

2371

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

2372

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

2373

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

2863

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

2864

"use_ipv6", "debuglevel", "restore", "statedir",

2865

"socket", "foreground", "zeroconf"):

2374

2866

value = getattr(options, option)

2375

2867

if value is not None:

2376

2868

server_settings[option] = value

2377

2869

del options

2378

2870

# Force all strings to be unicode

2379

2871

for option in server_settings.keys():

2380

if type(server_settings[option]) is str:

2381

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

2872

if isinstance(server_settings[option], bytes):

2873

server_settings[option] = (server_settings[option]

2874

.decode("utf-8"))

2875

# Force all boolean options to be boolean

2876

for option in ("debug", "use_dbus", "use_ipv6", "restore",

2877

"foreground", "zeroconf"):

2878

server_settings[option] = bool(server_settings[option])

2382

2879

# Debug implies foreground

2383

2880

if server_settings["debug"]:

2384

2881

server_settings["foreground"] = True

2386

2883

2387

2884

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

2388

2885

2886

if (not server_settings["zeroconf"]

2887

and not (server_settings["port"]

2888

or server_settings["socket"] != "")):

2889

parser.error("Needs port or socket to work without Zeroconf")

2890

2389

2891

# For convenience

2390

2892

debug = server_settings["debug"]

2391

2893

debuglevel = server_settings["debuglevel"]

2394

2896

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

2395

2897

stored_state_file)

2396

2898

foreground = server_settings["foreground"]

2899

zeroconf = server_settings["zeroconf"]

2397

2900

2398

2901

if debug:

2399

2902

initlogger(debug, logging.DEBUG)

2405

2908

initlogger(debug, level)

2406

2909

2407

2910

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

2408

syslogger.setFormatter(logging.Formatter

2409

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

2410

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

2411

.format(server_settings

2412

["servicename"])))

2911

syslogger.setFormatter(

2912

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

2913

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

2914

server_settings["servicename"])))

2413

2915

2414

2916

# Parse config file with clients

2415

2917

client_config = configparser.SafeConfigParser(Client

2420

2922

global mandos_dbus_service

2421

2923

mandos_dbus_service = None

2422

2924

2423

tcp_server = MandosServer((server_settings["address"],

2424

server_settings["port"]),

2425

ClientHandler,

2426

interface=(server_settings["interface"]

2427

or None),

2428

use_ipv6=use_ipv6,

2429

gnutls_priority=

2430

server_settings["priority"],

2431

use_dbus=use_dbus,

2432

socketfd=(server_settings["socket"]

2433

or None))

2925

socketfd = None

2926

if server_settings["socket"] != "":

2927

socketfd = server_settings["socket"]

2928

tcp_server = MandosServer(

2929

(server_settings["address"], server_settings["port"]),

2930

ClientHandler,

2931

interface=(server_settings["interface"] or None),

2932

use_ipv6=use_ipv6,

2933

gnutls_priority=server_settings["priority"],

2934

use_dbus=use_dbus,

2935

socketfd=socketfd)

2434

2936

if not foreground:

2435

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

2937

pidfilename = "/run/mandos.pid"

2938

if not os.path.isdir("/run/."):

2939

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

2436

2940

pidfile = None

2437

2941

try:

2438

pidfile = open(pidfilename, "w")

2942

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

2439

2943

except IOError as e:

2440

2944

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

2441

2945

exc_info=e)

2442

2946

2443

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

2947

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

2948

("mandos", "mandos"),

2949

("nobody", "nogroup")):

2444

2950

try:

2445

2951

uid = pwd.getpwnam(name).pw_uid

2446

gid = pwd.getpwnam(name).pw_gid

2952

gid = pwd.getpwnam(group).pw_gid

2447

2953

break

2448

2954

except KeyError:

2449

2955

continue

2453

2959

try:

2454

2960

os.setgid(gid)

2455

2961

os.setuid(uid)

2962

if debug:

2963

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

2964

gid))

2456

2965

except OSError as error:

2966

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

2967

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

2457

2968

if error.errno != errno.EPERM:

2458

raise error

2969

raise

2459

2970

2460

2971

if debug:

2461

2972

# Enable all possible GnuTLS debugging

2462

2973

2463

2974

# "Use a log level over 10 to enable all debugging options."

2464

2975

# - GnuTLS manual

2465

gnutls.library.functions.gnutls_global_set_log_level(11)

2976

gnutls.global_set_log_level(11)

2466

2977

2467

@gnutls.library.types.gnutls_log_func

2978

@gnutls.log_func

2468

2979

def debug_gnutls(level, string):

2469

2980

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

2470

2981

2471

(gnutls.library.functions

2472

.gnutls_global_set_log_function(debug_gnutls))

2982

gnutls.global_set_log_function(debug_gnutls)

2473

2983

2474

2984

# Redirect stdin so all checkers get /dev/null

2475

2985

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

2482

2992

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

2483

2993

daemon()

2484

2994

2485

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

2486

# need to inform gobject that threads will be used.

2487

gobject.threads_init()

2995

# multiprocessing will use threads, so before we use GLib we need

2996

# to inform GLib that threads will be used.

2997

GLib.threads_init()

2488

2998

2489

2999

global main_loop

2490

3000

# From the Avahi example code

2491

3001

DBusGMainLoop(set_as_default=True)

2492

main_loop = gobject.MainLoop()

3002

main_loop = GLib.MainLoop()

2493

3003

bus = dbus.SystemBus()

2494

3004

# End of Avahi example code

2495

3005

if use_dbus:

2496

3006

try:

2497

3007

bus_name = dbus.service.BusName("se.recompile.Mandos",

2498

bus, do_not_queue=True)

2499

old_bus_name = (dbus.service.BusName

2500

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

2501

do_not_queue=True))

2502

except dbus.exceptions.NameExistsException as e:

3008

bus,

3009

do_not_queue=True)

3010

old_bus_name = dbus.service.BusName(

3011

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

3012

do_not_queue=True)

3013

except dbus.exceptions.DBusException as e:

2503

3014

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

2504

3015

use_dbus = False

2505

3016

server_settings["use_dbus"] = False

2506

3017

tcp_server.use_dbus = False

2507

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2508

service = AvahiServiceToSyslog(name =

2509

server_settings["servicename"],

2510

servicetype = "_mandos._tcp",

2511

protocol = protocol, bus = bus)

2512

if server_settings["interface"]:

2513

service.interface = (if_nametoindex

2514

(str(server_settings["interface"])))

3018

if zeroconf:

3019

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

3020

service = AvahiServiceToSyslog(

3021

name = server_settings["servicename"],

3022

servicetype = "_mandos._tcp",

3023

protocol = protocol,

3024

bus = bus)

3025

if server_settings["interface"]:

3026

service.interface = if_nametoindex(

3027

server_settings["interface"].encode("utf-8"))

2515

3028

2516

3029

global multiprocessing_manager

2517

3030

multiprocessing_manager = multiprocessing.Manager()

2524

3037

old_client_settings = {}

2525

3038

clients_data = {}

2526

3039

3040

# This is used to redirect stdout and stderr for checker processes

3041

global wnull

3042

wnull = open(os.devnull, "w") # A writable /dev/null

3043

# Only used if server is running in foreground but not in debug

3044

# mode

3045

if debug or not foreground:

3046

wnull.close()

3047

2527

3048

# Get client data and settings from last running state.

2528

3049

if server_settings["restore"]:

2529

3050

try:

2530

3051

with open(stored_state_path, "rb") as stored_state:

2531

clients_data, old_client_settings = (pickle.load

2532

(stored_state))

3052

if sys.version_info.major == 2:

3053

clients_data, old_client_settings = pickle.load(

3054

stored_state)

3055

else:

3056

bytes_clients_data, bytes_old_client_settings = (

3057

pickle.load(stored_state, encoding = "bytes"))

3058

### Fix bytes to strings

3059

## clients_data

3060

# .keys()

3061

clients_data = { (key.decode("utf-8")

3062

if isinstance(key, bytes)

3063

else key): value

3064

for key, value in

3065

bytes_clients_data.items() }

3066

del bytes_clients_data

3067

for key in clients_data:

3068

value = { (k.decode("utf-8")

3069

if isinstance(k, bytes) else k): v

3070

for k, v in

3071

clients_data[key].items() }

3072

clients_data[key] = value

3073

# .client_structure

3074

value["client_structure"] = [

3075

(s.decode("utf-8")

3076

if isinstance(s, bytes)

3077

else s) for s in

3078

value["client_structure"] ]

3079

# .name & .host

3080

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

3081

if isinstance(value[k], bytes):

3082

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

3083

## old_client_settings

3084

# .keys()

3085

old_client_settings = {

3086

(key.decode("utf-8")

3087

if isinstance(key, bytes)

3088

else key): value

3089

for key, value in

3090

bytes_old_client_settings.items() }

3091

del bytes_old_client_settings

3092

# .host

3093

for value in old_client_settings.values():

3094

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

3095

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

3096

.decode("utf-8"))

2533

3097

os.remove(stored_state_path)

2534

3098

except IOError as e:

2535

3099

if e.errno == errno.ENOENT:

2536

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

2537

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

3100

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

3101

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

2538

3102

else:

2539

3103

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

2540

3104

exc_info=e)

2541

3105

raise

2542

3106

except EOFError as e:

2543

3107

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

2544

"EOFError:", exc_info=e)

3108

"EOFError:",

3109

exc_info=e)

2545

3110

2546

3111

with PGPEngine() as pgp:

2547

for client_name, client in clients_data.iteritems():

3112

for client_name, client in clients_data.items():

3113

# Skip removed clients

3114

if client_name not in client_settings:

3115

continue

3116

2548

3117

# Decide which value to use after restoring saved state.

2549

3118

# We have three different values: Old config file,

2550

3119

# new config file, and saved state.

2555

3124

# For each value in new config, check if it

2556

3125

# differs from the old config value (Except for

2557

3126

# the "secret" attribute)

2558

if (name != "secret" and

2559

value != old_client_settings[client_name]

2560

[name]):

3127

if (name != "secret"

3128

and (value !=

3129

old_client_settings[client_name][name])):

2561

3130

client[name] = value

2562

3131

except KeyError:

2563

3132

pass

2564

3133

2565

3134

# Clients who has passed its expire date can still be

2566

# enabled if its last checker was successful. Clients

3135

# enabled if its last checker was successful. A Client

2567

3136

# whose checker succeeded before we stored its state is

2568

3137

# assumed to have successfully run all checkers during

2569

3138

# downtime.

2571

3140

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

2572

3141

if not client["last_checked_ok"]:

2573

3142

logger.warning(

2574

"disabling client {0} - Client never "

2575

"performed a successful checker"

2576

.format(client_name))

3143

"disabling client {} - Client never "

3144

"performed a successful checker".format(

3145

client_name))

2577

3146

client["enabled"] = False

2578

3147

elif client["last_checker_status"] != 0:

2579

3148

logger.warning(

2580

"disabling client {0} - Client "

2581

"last checker failed with error code {1}"

2582

.format(client_name,

2583

client["last_checker_status"]))

3149

"disabling client {} - Client last"

3150

" checker failed with error code"

3151

" {}".format(

3152

client_name,

3153

client["last_checker_status"]))

2584

3154

client["enabled"] = False

2585

3155

else:

2586

client["expires"] = (datetime.datetime

2587

.utcnow()

2588

+ client["timeout"])

3156

client["expires"] = (

3157

datetime.datetime.utcnow()

3158

+ client["timeout"])

2589

3159

logger.debug("Last checker succeeded,"

2590

" keeping {0} enabled"

2591

.format(client_name))

3160

" keeping {} enabled".format(

3161

client_name))

2592

3162

try:

2593

client["secret"] = (

2594

pgp.decrypt(client["encrypted_secret"],

2595

client_settings[client_name]

2596

["secret"]))

3163

client["secret"] = pgp.decrypt(

3164

client["encrypted_secret"],

3165

client_settings[client_name]["secret"])

2597

3166

except PGPError:

2598

3167

# If decryption fails, we use secret from new settings

2599

logger.debug("Failed to decrypt {0} old secret"

2600

.format(client_name))

2601

client["secret"] = (

2602

client_settings[client_name]["secret"])

3168

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

3169

client_name))

3170

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

3171

["secret"])

2603

3172

2604

3173

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

2605

3174

for client_name in (set(old_client_settings)

2610

3179

clients_data[client_name] = client_settings[client_name]

2611

3180

2612

3181

# Create all client objects

2613

for client_name, client in clients_data.iteritems():

3182

for client_name, client in clients_data.items():

2614

3183

tcp_server.clients[client_name] = client_class(

2615

name = client_name, settings = client)

3184

name = client_name,

3185

settings = client,

3186

server_settings = server_settings)

2616

3187

2617

3188

if not tcp_server.clients:

2618

3189

logger.warning("No clients defined")

2619

3190

2620

3191

if not foreground:

2621

3192

if pidfile is not None:

3193

pid = os.getpid()

2622

3194

try:

2623

3195

with pidfile:

2624

pid = os.getpid()

2625

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

3196

print(pid, file=pidfile)

2626

3197

except IOError:

2627

3198

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

2628

3199

pidfilename, pid)

2629

3200

del pidfile

2630

3201

del pidfilename

2631

3202

2632

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

2633

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

3203

for termsig in (signal.SIGHUP, signal.SIGTERM):

3204

GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,

3205

lambda: main_loop.quit() and False)

2634

3206

2635

3207

if use_dbus:

2636

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

2637

"se.bsnet.fukt.Mandos"})

2638

class MandosDBusService(DBusObjectWithProperties):

3208

3209

@alternate_dbus_interfaces(

3210

{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })

3211

class MandosDBusService(DBusObjectWithObjectManager):

2639

3212

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

3213

2640

3214

def __init__(self):

2641

3215

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

3216

2642

3217

_interface = "se.recompile.Mandos"

2643

3218

2644

@dbus_interface_annotations(_interface)

2645

def _foo(self):

2646

return { "org.freedesktop.DBus.Property"

2647

".EmitsChangedSignal":

2648

"false"}

2649

2650

3219

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

2651

3220

def ClientAdded(self, objpath):

2652

3221

"D-Bus signal"

2657

3226

"D-Bus signal"

2658

3227

pass

2659

3228

3229

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

3230

"true"})

2660

3231

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

2661

3232

def ClientRemoved(self, objpath, name):

2662

3233

"D-Bus signal"

2663

3234

pass

2664

3235

3236

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

3237

"true"})

2665

3238

@dbus.service.method(_interface, out_signature="ao")

2666

3239

def GetAllClients(self):

2667

3240

"D-Bus method"

2668

return dbus.Array(c.dbus_object_path

2669

for c in

2670

tcp_server.clients.itervalues())

3241

return dbus.Array(c.dbus_object_path for c in

3242

tcp_server.clients.values())

2671

3243

3244

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

3245

"true"})

2672

3246

@dbus.service.method(_interface,

2673

3247

out_signature="a{oa{sv}}")

2674

3248

def GetAllClientsWithProperties(self):

2675

3249

"D-Bus method"

2676

3250

return dbus.Dictionary(

2677

((c.dbus_object_path, c.GetAll(""))

2678

for c in tcp_server.clients.itervalues()),

3251

{ c.dbus_object_path: c.GetAll(

3252

"se.recompile.Mandos.Client")

3253

for c in tcp_server.clients.values() },

2679

3254

signature="oa{sv}")

2680

3255

2681

3256

@dbus.service.method(_interface, in_signature="o")

2682

3257

def RemoveClient(self, object_path):

2683

3258

"D-Bus method"

2684

for c in tcp_server.clients.itervalues():

3259

for c in tcp_server.clients.values():

2685

3260

if c.dbus_object_path == object_path:

2686

3261

del tcp_server.clients[c.name]

2687

3262

c.remove_from_connection()

2688

# Don't signal anything except ClientRemoved

3263

# Don't signal the disabling

2689

3264

c.disable(quiet=True)

2690

# Emit D-Bus signal

2691

self.ClientRemoved(object_path, c.name)

3265

# Emit D-Bus signal for removal

3266

self.client_removed_signal(c)

2692

3267

return

2693

3268

raise KeyError(object_path)

2694

3269

2695

3270

del _interface

3271

3272

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

3273

out_signature = "a{oa{sa{sv}}}")

3274

def GetManagedObjects(self):

3275

"""D-Bus method"""

3276

return dbus.Dictionary(

3277

{ client.dbus_object_path:

3278

dbus.Dictionary(

3279

{ interface: client.GetAll(interface)

3280

for interface in

3281

client._get_all_interface_names()})

3282

for client in tcp_server.clients.values()})

3283

3284

def client_added_signal(self, client):

3285

"""Send the new standard signal and the old signal"""

3286

if use_dbus:

3287

# New standard signal

3288

self.InterfacesAdded(

3289

client.dbus_object_path,

3290

dbus.Dictionary(

3291

{ interface: client.GetAll(interface)

3292

for interface in

3293

client._get_all_interface_names()}))

3294

# Old signal

3295

self.ClientAdded(client.dbus_object_path)

3296

3297

def client_removed_signal(self, client):

3298

"""Send the new standard signal and the old signal"""

3299

if use_dbus:

3300

# New standard signal

3301

self.InterfacesRemoved(

3302

client.dbus_object_path,

3303

client._get_all_interface_names())

3304

# Old signal

3305

self.ClientRemoved(client.dbus_object_path,

3306

client.name)

2696

3307

2697

3308

mandos_dbus_service = MandosDBusService()

2698

3309

2699

3310

def cleanup():

2700

3311

"Cleanup function; run on exit"

2701

service.cleanup()

3312

if zeroconf:

3313

service.cleanup()

2702

3314

2703

3315

multiprocessing.active_children()

3316

wnull.close()

2704

3317

if not (tcp_server.clients or client_settings):

2705

3318

return

2706

3319

2709

3322

# removed/edited, old secret will thus be unrecovable.

2710

3323

clients = {}

2711

3324

with PGPEngine() as pgp:

2712

for client in tcp_server.clients.itervalues():

3325

for client in tcp_server.clients.values():

2713

3326

key = client_settings[client.name]["secret"]

2714

3327

client.encrypted_secret = pgp.encrypt(client.secret,

2715

3328

key)

2717

3330

2718

3331

# A list of attributes that can not be pickled

2719

3332

# + secret.

2720

exclude = set(("bus", "changedstate", "secret",

2721

"checker"))

2722

for name, typ in (inspect.getmembers

2723

(dbus.service.Object)):

3333

exclude = { "bus", "changedstate", "secret",

3334

"checker", "server_settings" }

3335

for name, typ in inspect.getmembers(dbus.service

3336

.Object):

2724

3337

exclude.add(name)

2725

3338

2726

3339

client_dict["encrypted_secret"] = (client

2733

3346

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

2734

3347

2735

3348

try:

2736

with (tempfile.NamedTemporaryFile

2737

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

2738

dir=os.path.dirname(stored_state_path),

2739

delete=False)) as stored_state:

2740

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

2741

tempname=stored_state.name

3349

with tempfile.NamedTemporaryFile(

3350

mode='wb',

3351

suffix=".pickle",

3352

prefix='clients-',

3353

dir=os.path.dirname(stored_state_path),

3354

delete=False) as stored_state:

3355

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

3356

protocol = 2)

3357

tempname = stored_state.name

2742

3358

os.rename(tempname, stored_state_path)

2743

3359

except (IOError, OSError) as e:

2744

3360

if not debug:

2747

3363

except NameError:

2748

3364

pass

2749

3365

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

2750

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

3366

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

2751

3367

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

2752

3368

else:

2753

3369

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

2754

3370

exc_info=e)

2755

raise e

3371

raise

2756

3372

2757

3373

# Delete all clients, and settings from config

2758

3374

while tcp_server.clients:

2759

3375

name, client = tcp_server.clients.popitem()

2760

3376

if use_dbus:

2761

3377

client.remove_from_connection()

2762

# Don't signal anything except ClientRemoved

3378

# Don't signal the disabling

2763

3379

client.disable(quiet=True)

3380

# Emit D-Bus signal for removal

2764

3381

if use_dbus:

2765

# Emit D-Bus signal

2766

mandos_dbus_service.ClientRemoved(client

2767

.dbus_object_path,

2768

client.name)

3382

mandos_dbus_service.client_removed_signal(client)

2769

3383

client_settings.clear()

2770

3384

2771

3385

atexit.register(cleanup)

2772

3386

2773

for client in tcp_server.clients.itervalues():

3387

for client in tcp_server.clients.values():

2774

3388

if use_dbus:

2775

# Emit D-Bus signal

2776

mandos_dbus_service.ClientAdded(client.dbus_object_path)

3389

# Emit D-Bus signal for adding

3390

mandos_dbus_service.client_added_signal(client)

2777

3391

# Need to initiate checking of clients

2778

3392

if client.enabled:

2779

3393

client.init_checker()

2782

3396

tcp_server.server_activate()

2783

3397

2784

3398

# Find out what port we got

2785

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

3399

if zeroconf:

3400

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

2786

3401

if use_ipv6:

2787

3402

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

2788

3403

" flowinfo %d, scope_id %d",

2794

3409

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

2795

3410

2796

3411

try:

2797

# From the Avahi example code

2798

try:

2799

service.activate()

2800

except dbus.exceptions.DBusException as error:

2801

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

2802

cleanup()

2803

sys.exit(1)

2804

# End of Avahi example code

3412

if zeroconf:

3413

# From the Avahi example code

3414

try:

3415

service.activate()

3416

except dbus.exceptions.DBusException as error:

3417

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

3418

cleanup()

3419

sys.exit(1)

3420

# End of Avahi example code

2805

3421

2806

gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,

2807

lambda *args, **kwargs:

2808

(tcp_server.handle_request

2809

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

3422

GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,

3423

lambda *args, **kwargs:

3424

(tcp_server.handle_request

3425

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

2810

3426

2811

3427

logger.debug("Starting main loop")

2812

3428

main_loop.run()

2822

3438

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

2823

3439

cleanup()

2824

3440

3441

2825

3442

if __name__ == '__main__':

2826

3443

main()