/mandos/release : revision 237.7.127

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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_builtins import *

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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 SocketServer as socketserver

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import socket

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import argparse

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import datetime

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import errno

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try:

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import ConfigParser as configparser

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except ImportError:

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import configparser

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import 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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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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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 cPickle as 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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try:

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import gobject

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except ImportError:

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from gi.repository import GObject as gobject

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import gobject

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import avahi

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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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if sys.version_info.major == 2:

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str = unicode

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version = "1.7.3"

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version = "1.5.3"

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stored_state_file = "clients.pickle"

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logger = logging.getLogger()

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syslogger = None

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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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try:

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if_nametoindex = ctypes.cdll.LoadLibrary(

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

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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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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(b"16s16x", interface))

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

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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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return interface_index

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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.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(":")

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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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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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def __enter__(self):

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return self

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

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

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self._cleanup()

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return False

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

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def encrypt(self, data, password):

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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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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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return ciphertext

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def decrypt(self, data, password):

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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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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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return decrypted_plaintext

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class AvahiError(Exception):

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

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self.value = value

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

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**kwargs)

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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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class AvahiServiceError(AvahiError):

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pass

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class AvahiGroupError(AvahiError):

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pass

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Used to optionally bind to the specified interface.

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name: string; Example: 'Mandos'

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

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

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See <http://www.dns-sd.org/ServiceTypes.html>

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port: integer; what port to announce

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TXT: list of strings; TXT record for the service

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domain: string; Domain to publish on, default to .local if empty.

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bus: dbus.SystemBus()

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"""

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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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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):

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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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def rename(self, remove=True):

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def rename(self):

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

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if self.rename_count >= self.max_renames:

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

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" after %i retries, exiting.",

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self.rename_count)

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raise AvahiServiceError("Too many renames")

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self.name = str(

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self.server.GetAlternativeServiceName(self.name))

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self.rename_count += 1

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self.name = unicode(self.server

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.GetAlternativeServiceName(self.name))

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

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self.name)

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if remove:

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self.remove()

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self.remove()

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try:

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self.add()

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except dbus.exceptions.DBusException as error:

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if (error.get_dbus_name()

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

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

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return self.rename(remove=False)

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else:

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

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self.cleanup()

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os._exit(1)

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

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self.cleanup()

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os._exit(1)

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self.rename_count += 1

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def remove(self):

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

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self.rename()

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elif state == avahi.ENTRY_GROUP_FAILURE:

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

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str(error))

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

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unicode(error))

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

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.format(error))

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def cleanup(self):

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

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

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

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

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bad_states = {

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avahi.SERVER_INVALID: "Zeroconf server invalid",

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avahi.SERVER_REGISTERING: None,

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avahi.SERVER_COLLISION: "Zeroconf server name collision",

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avahi.SERVER_FAILURE: "Zeroconf server failure",

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}

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bad_states = { avahi.SERVER_INVALID:

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"Zeroconf server invalid",

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avahi.SERVER_REGISTERING: None,

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avahi.SERVER_COLLISION:

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"Zeroconf server name collision",

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avahi.SERVER_FAILURE:

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"Zeroconf server failure" }

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if state in bad_states:

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if bad_states[state] is not None:

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if error is None:

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

401

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self.cleanup()

402

362

elif state == avahi.SERVER_RUNNING:

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try:

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self.add()

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except dbus.exceptions.DBusException as error:

406

if (error.get_dbus_name()

407

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

408

logger.info("Local Zeroconf service name"

409

" collision.")

410

return self.rename(remove=False)

411

else:

412

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

413

self.cleanup()

414

os._exit(1)

363

self.add()

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364

else:

416

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if error is None:

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

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376

follow_name_owner_changes=True),

428

377

avahi.DBUS_INTERFACE_SERVER)

429

378

self.server.connect_to_signal("StateChanged",

430

self.server_state_changed)

379

self.server_state_changed)

431

380

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

432

381

433

434

382

class AvahiServiceToSyslog(AvahiService):

435

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

383

def rename(self):

436

384

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

437

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

438

syslogger.setFormatter(logging.Formatter(

439

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

440

.format(self.name)))

385

ret = AvahiService.rename(self)

386

syslogger.setFormatter(logging.Formatter

387

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

388

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

389

.format(self.name)))

441

390

return ret

442

391

443

# Pretend that we have a GnuTLS module

444

class GnuTLS(object):

445

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

446

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

447

448

_library = ctypes.cdll.LoadLibrary(

449

ctypes.util.find_library("gnutls"))

450

_need_version = "3.3.0"

451

def __init__(self):

452

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

453

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

454

# happens.

455

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

456

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

457

.format(self._need_version))

458

459

# Unless otherwise indicated, the constants and types below are

460

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

461

462

# Constants

463

E_SUCCESS = 0

464

E_INTERRUPTED = -52

465

E_AGAIN = -28

466

CRT_OPENPGP = 2

467

CLIENT = 2

468

SHUT_RDWR = 0

469

CRD_CERTIFICATE = 1

470

E_NO_CERTIFICATE_FOUND = -49

471

OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h

472

473

# Types

474

class session_int(ctypes.Structure):

475

_fields_ = []

476

session_t = ctypes.POINTER(session_int)

477

class certificate_credentials_st(ctypes.Structure):

478

_fields_ = []

479

certificate_credentials_t = ctypes.POINTER(

480

certificate_credentials_st)

481

certificate_type_t = ctypes.c_int

482

class datum_t(ctypes.Structure):

483

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

484

('size', ctypes.c_uint)]

485

class openpgp_crt_int(ctypes.Structure):

486

_fields_ = []

487

openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)

488

openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h

489

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

490

credentials_type_t = ctypes.c_int #

491

transport_ptr_t = ctypes.c_void_p

492

close_request_t = ctypes.c_int

493

494

# Exceptions

495

class Error(Exception):

496

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

497

# exception might be raised from within GnuTLS.__init__,

498

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

499

# global variable has happened.

500

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

501

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

502

# code is passed, convert it to a string with

503

# gnutls.strerror()

504

self.code = code

505

if message is None and code is not None:

506

message = GnuTLS.strerror(code)

507

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

508

message, *args)

509

510

class CertificateSecurityError(Error):

511

pass

512

513

# Classes

514

class Credentials(object):

515

def __init__(self):

516

self._c_object = gnutls.certificate_credentials_t()

517

gnutls.certificate_allocate_credentials(

518

ctypes.byref(self._c_object))

519

self.type = gnutls.CRD_CERTIFICATE

520

521

def __del__(self):

522

gnutls.certificate_free_credentials(self._c_object)

523

524

class ClientSession(object):

525

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

526

self._c_object = gnutls.session_t()

527

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

528

gnutls.set_default_priority(self._c_object)

529

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

530

gnutls.handshake_set_private_extensions(self._c_object,

531

True)

532

self.socket = socket

533

if credentials is None:

534

credentials = gnutls.Credentials()

535

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

536

ctypes.cast(credentials._c_object,

537

ctypes.c_void_p))

538

self.credentials = credentials

539

540

def __del__(self):

541

gnutls.deinit(self._c_object)

542

543

def handshake(self):

544

return gnutls.handshake(self._c_object)

545

546

def send(self, data):

547

data = bytes(data)

548

data_len = len(data)

549

while data_len > 0:

550

data_len -= gnutls.record_send(self._c_object,

551

data[-data_len:],

552

data_len)

553

554

def bye(self):

555

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

556

557

# Error handling functions

558

def _error_code(result):

559

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

560

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

561

if result >= 0:

562

return result

563

if result == gnutls.E_NO_CERTIFICATE_FOUND:

564

raise gnutls.CertificateSecurityError(code = result)

565

raise gnutls.Error(code = result)

566

567

def _retry_on_error(result, func, arguments):

568

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

569

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

570

while result < 0:

571

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

572

return _error_code(result)

573

result = func(*arguments)

574

return result

575

576

# Unless otherwise indicated, the function declarations below are

577

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

578

579

# Functions

580

priority_set_direct = _library.gnutls_priority_set_direct

581

priority_set_direct.argtypes = [session_t, ctypes.c_char_p,

582

ctypes.POINTER(ctypes.c_char_p)]

583

priority_set_direct.restype = _error_code

584

585

init = _library.gnutls_init

586

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

587

init.restype = _error_code

588

589

set_default_priority = _library.gnutls_set_default_priority

590

set_default_priority.argtypes = [session_t]

591

set_default_priority.restype = _error_code

592

593

record_send = _library.gnutls_record_send

594

record_send.argtypes = [session_t, ctypes.c_void_p,

595

ctypes.c_size_t]

596

record_send.restype = ctypes.c_ssize_t

597

record_send.errcheck = _retry_on_error

598

599

certificate_allocate_credentials = (

600

_library.gnutls_certificate_allocate_credentials)

601

certificate_allocate_credentials.argtypes = [

602

ctypes.POINTER(certificate_credentials_t)]

603

certificate_allocate_credentials.restype = _error_code

604

605

certificate_free_credentials = (

606

_library.gnutls_certificate_free_credentials)

607

certificate_free_credentials.argtypes = [certificate_credentials_t]

608

certificate_free_credentials.restype = None

609

610

handshake_set_private_extensions = (

611

_library.gnutls_handshake_set_private_extensions)

612

handshake_set_private_extensions.argtypes = [session_t,

613

ctypes.c_int]

614

handshake_set_private_extensions.restype = None

615

616

credentials_set = _library.gnutls_credentials_set

617

credentials_set.argtypes = [session_t, credentials_type_t,

618

ctypes.c_void_p]

619

credentials_set.restype = _error_code

620

621

strerror = _library.gnutls_strerror

622

strerror.argtypes = [ctypes.c_int]

623

strerror.restype = ctypes.c_char_p

624

625

certificate_type_get = _library.gnutls_certificate_type_get

626

certificate_type_get.argtypes = [session_t]

627

certificate_type_get.restype = _error_code

628

629

certificate_get_peers = _library.gnutls_certificate_get_peers

630

certificate_get_peers.argtypes = [session_t,

631

ctypes.POINTER(ctypes.c_uint)]

632

certificate_get_peers.restype = ctypes.POINTER(datum_t)

633

634

global_set_log_level = _library.gnutls_global_set_log_level

635

global_set_log_level.argtypes = [ctypes.c_int]

636

global_set_log_level.restype = None

637

638

global_set_log_function = _library.gnutls_global_set_log_function

639

global_set_log_function.argtypes = [log_func]

640

global_set_log_function.restype = None

641

642

deinit = _library.gnutls_deinit

643

deinit.argtypes = [session_t]

644

deinit.restype = None

645

646

handshake = _library.gnutls_handshake

647

handshake.argtypes = [session_t]

648

handshake.restype = _error_code

649

handshake.errcheck = _retry_on_error

650

651

transport_set_ptr = _library.gnutls_transport_set_ptr

652

transport_set_ptr.argtypes = [session_t, transport_ptr_t]

653

transport_set_ptr.restype = None

654

655

bye = _library.gnutls_bye

656

bye.argtypes = [session_t, close_request_t]

657

bye.restype = _error_code

658

bye.errcheck = _retry_on_error

659

660

check_version = _library.gnutls_check_version

661

check_version.argtypes = [ctypes.c_char_p]

662

check_version.restype = ctypes.c_char_p

663

664

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

665

666

openpgp_crt_init = _library.gnutls_openpgp_crt_init

667

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

668

openpgp_crt_init.restype = _error_code

669

670

openpgp_crt_import = _library.gnutls_openpgp_crt_import

671

openpgp_crt_import.argtypes = [openpgp_crt_t,

672

ctypes.POINTER(datum_t),

673

openpgp_crt_fmt_t]

674

openpgp_crt_import.restype = _error_code

675

676

openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self

677

openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,

678

ctypes.POINTER(ctypes.c_uint)]

679

openpgp_crt_verify_self.restype = _error_code

680

681

openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit

682

openpgp_crt_deinit.argtypes = [openpgp_crt_t]

683

openpgp_crt_deinit.restype = None

684

685

openpgp_crt_get_fingerprint = (

686

_library.gnutls_openpgp_crt_get_fingerprint)

687

openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,

688

ctypes.c_void_p,

689

ctypes.POINTER(

690

ctypes.c_size_t)]

691

openpgp_crt_get_fingerprint.restype = _error_code

692

693

# Remove non-public functions

694

del _error_code, _retry_on_error

695

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

696

gnutls = GnuTLS()

697

698

def call_pipe(connection, # : multiprocessing.Connection

699

func, *args, **kwargs):

700

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

701

702

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

703

return value on the provided multiprocessing.Connection.

704

"""

705

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

706

connection.close()

392

def timedelta_to_milliseconds(td):

393

"Convert a datetime.timedelta() to milliseconds"

394

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

395

+ (td.seconds * 1000)

396

+ (td.microseconds // 1000))

707

397

708

398

class Client(object):

709

399

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

736

426

last_checker_status: integer between 0 and 255 reflecting exit

737

427

status of last checker. -1 reflects crashed

738

428

checker, -2 means no checker completed yet.

739

last_checker_signal: The signal which killed the last checker, if

740

last_checker_status is -1

741

429

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

742

430

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

743

431

D-Bus identifiers

748

436

runtime_expansions: Allowed attributes for runtime expansion.

749

437

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

750

438

disabled, or None

751

server_settings: The server_settings dict from main()

752

439

"""

753

440

754

441

runtime_expansions = ("approval_delay", "approval_duration",

755

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

756

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

757

"last_approval_request", "last_checked_ok",

442

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

443

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

758

444

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

759

client_defaults = {

760

"timeout": "PT5M",

761

"extended_timeout": "PT15M",

762

"interval": "PT2M",

763

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

764

"host": "",

765

"approval_delay": "PT0S",

766

"approval_duration": "PT1S",

767

"approved_by_default": "True",

768

"enabled": "True",

769

}

445

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

446

"extended_timeout": "15m",

447

"interval": "2m",

448

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

449

"host": "",

450

"approval_delay": "0s",

451

"approval_duration": "1s",

452

"approved_by_default": "True",

453

"enabled": "True",

454

}

455

456

def timeout_milliseconds(self):

457

"Return the 'timeout' attribute in milliseconds"

458

return timedelta_to_milliseconds(self.timeout)

459

460

def extended_timeout_milliseconds(self):

461

"Return the 'extended_timeout' attribute in milliseconds"

462

return timedelta_to_milliseconds(self.extended_timeout)

463

464

def interval_milliseconds(self):

465

"Return the 'interval' attribute in milliseconds"

466

return timedelta_to_milliseconds(self.interval)

467

468

def approval_delay_milliseconds(self):

469

return timedelta_to_milliseconds(self.approval_delay)

770

470

771

471

@staticmethod

772

472

def config_parser(config):

788

488

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

789

489

"enabled")

790

490

791

# Uppercase and remove spaces from fingerprint for later

792

# comparison purposes with return value from the

793

# fingerprint() function

794

491

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

795

492

.replace(" ", ""))

796

493

if "secret" in section:

801

498

"rb") as secfile:

802

499

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

803

500

else:

804

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

501

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

805

502

.format(section))

806

503

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

807

504

client["extended_timeout"] = string_to_delta(

818

515

819

516

return settings

820

517

821

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

518

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

822

519

self.name = name

823

if server_settings is None:

824

server_settings = {}

825

self.server_settings = server_settings

826

520

# adding all client settings

827

for setting, value in settings.items():

521

for setting, value in settings.iteritems():

828

522

setattr(self, setting, value)

829

523

830

524

if self.enabled:

838

532

self.expires = None

839

533

840

534

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

535

# Uppercase and remove spaces from fingerprint for later

536

# comparison purposes with return value from the fingerprint()

537

# function

841

538

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

842

539

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

843

540

datetime.datetime.utcnow())

850

547

self.current_checker_command = None

851

548

self.approved = None

852

549

self.approvals_pending = 0

853

self.changedstate = multiprocessing_manager.Condition(

854

multiprocessing_manager.Lock())

855

self.client_structure = [attr

856

for attr in self.__dict__.iterkeys()

550

self.changedstate = (multiprocessing_manager

551

.Condition(multiprocessing_manager

552

.Lock()))

553

self.client_structure = [attr for attr in

554

self.__dict__.iterkeys()

857

555

if not attr.startswith("_")]

858

556

self.client_structure.append("client_structure")

859

557

860

for name, t in inspect.getmembers(

861

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

558

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

559

lambda obj:

560

isinstance(obj,

561

property)):

862

562

if not name.startswith("_"):

863

563

self.client_structure.append(name)

864

564

872

572

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

873

573

# Already enabled

874

574

return

575

self.send_changedstate()

875

576

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

876

577

self.enabled = True

877

578

self.last_enabled = datetime.datetime.utcnow()

878

579

self.init_checker()

879

self.send_changedstate()

880

580

881

581

def disable(self, quiet=True):

882

582

"""Disable this client."""

883

583

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

884

584

return False

885

585

if not quiet:

586

self.send_changedstate()

587

if not quiet:

886

588

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

887

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

589

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

888

590

gobject.source_remove(self.disable_initiator_tag)

889

591

self.disable_initiator_tag = None

890

592

self.expires = None

891

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

593

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

892

594

gobject.source_remove(self.checker_initiator_tag)

893

595

self.checker_initiator_tag = None

894

596

self.stop_checker()

895

597

self.enabled = False

896

if not quiet:

897

self.send_changedstate()

898

598

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

899

599

return False

900

600

904

604

def init_checker(self):

905

605

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

906

606

# and every interval from then on.

907

if self.checker_initiator_tag is not None:

908

gobject.source_remove(self.checker_initiator_tag)

909

self.checker_initiator_tag = gobject.timeout_add(

910

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

911

self.start_checker)

607

self.checker_initiator_tag = (gobject.timeout_add

608

(self.interval_milliseconds(),

609

self.start_checker))

912

610

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

913

if self.disable_initiator_tag is not None:

914

gobject.source_remove(self.disable_initiator_tag)

915

self.disable_initiator_tag = gobject.timeout_add(

916

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

611

self.disable_initiator_tag = (gobject.timeout_add

612

(self.timeout_milliseconds(),

613

self.disable))

917

614

# Also start a new checker *right now*.

918

615

self.start_checker()

919

616

920

def checker_callback(self, source, condition, connection,

921

command):

617

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

922

618

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

923

619

self.checker_callback_tag = None

924

620

self.checker = None

925

# Read return code from connection (see call_pipe)

926

returncode = connection.recv()

927

connection.close()

928

929

if returncode >= 0:

930

self.last_checker_status = returncode

931

self.last_checker_signal = None

621

if os.WIFEXITED(condition):

622

self.last_checker_status = os.WEXITSTATUS(condition)

932

623

if self.last_checker_status == 0:

933

624

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

934

625

vars(self))

935

626

self.checked_ok()

936

627

else:

937

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

628

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

629

vars(self))

938

630

else:

939

631

self.last_checker_status = -1

940

self.last_checker_signal = -returncode

941

632

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

942

633

vars(self))

943

return False

944

634

945

635

def checked_ok(self):

946

636

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

947

637

self.last_checked_ok = datetime.datetime.utcnow()

948

638

self.last_checker_status = 0

949

self.last_checker_signal = None

950

639

self.bump_timeout()

951

640

952

641

def bump_timeout(self, timeout=None):

955

644

timeout = self.timeout

956

645

if self.disable_initiator_tag is not None:

957

646

gobject.source_remove(self.disable_initiator_tag)

958

self.disable_initiator_tag = None

959

647

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

960

self.disable_initiator_tag = gobject.timeout_add(

961

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

648

self.disable_initiator_tag = (gobject.timeout_add

649

(timedelta_to_milliseconds

650

(timeout), self.disable))

962

651

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

963

652

964

653

def need_approval(self):

978

667

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

979

668

# should be.

980

669

981

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

982

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

983

self.checker.join()

984

self.checker = None

670

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

671

try:

672

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

673

except (AttributeError, OSError) as error:

674

if (isinstance(error, OSError)

675

and error.errno != errno.ECHILD):

676

raise error

677

else:

678

if pid:

679

logger.warning("Checker was a zombie")

680

gobject.source_remove(self.checker_callback_tag)

681

self.checker_callback(pid, status,

682

self.current_checker_command)

985

683

# Start a new checker if needed

986

684

if self.checker is None:

987

# Escape attributes for the shell

988

escaped_attrs = {

989

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

990

for attr in self.runtime_expansions }

991

try:

992

command = self.checker_command % escaped_attrs

993

except TypeError as error:

994

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

995

self.checker_command,

685

try:

686

# In case checker_command has exactly one % operator

687

command = self.checker_command % self.host

688

except TypeError:

689

# Escape attributes for the shell

690

escaped_attrs = dict(

691

(attr,

692

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

693

errors=

694

'replace')))

695

for attr in

696

self.runtime_expansions)

697

698

try:

699

command = self.checker_command % escaped_attrs

700

except TypeError as error:

701

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

702

self.checker_command, exc_info=error)

703

return True # Try again later

704

self.current_checker_command = command

705

try:

706

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

707

command, self.name)

708

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

709

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

710

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

711

# always replaced by /dev/null.)

712

self.checker = subprocess.Popen(command,

713

close_fds=True,

714

shell=True, cwd="/")

715

self.checker_callback_tag = (gobject.child_watch_add

716

(self.checker.pid,

717

self.checker_callback,

718

data=command))

719

# The checker may have completed before the gobject

720

# watch was added. Check for this.

721

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

722

if pid:

723

gobject.source_remove(self.checker_callback_tag)

724

self.checker_callback(pid, status, command)

725

except OSError as error:

726

logger.error("Failed to start subprocess",

996

727

exc_info=error)

997

return True # Try again later

998

self.current_checker_command = command

999

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

1000

self.name)

1001

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

1002

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

1003

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

1004

# always replaced by /dev/null.)

1005

# The exception is when not debugging but nevertheless

1006

# running in the foreground; use the previously

1007

# created wnull.

1008

popen_args = { "close_fds": True,

1009

"shell": True,

1010

"cwd": "/" }

1011

if (not self.server_settings["debug"]

1012

and self.server_settings["foreground"]):

1013

popen_args.update({"stdout": wnull,

1014

"stderr": wnull })

1015

pipe = multiprocessing.Pipe(duplex = False)

1016

self.checker = multiprocessing.Process(

1017

target = call_pipe,

1018

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

1019

kwargs = popen_args)

1020

self.checker.start()

1021

self.checker_callback_tag = gobject.io_add_watch(

1022

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

1023

self.checker_callback, pipe[0], command)

1024

728

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

1025

729

return True

1026

730

1032

736

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

1033

737

return

1034

738

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

1035

self.checker.terminate()

739

try:

740

self.checker.terminate()

741

#time.sleep(0.5)

742

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

743

# self.checker.kill()

744

except OSError as error:

745

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

746

raise

1036

747

self.checker = None

1037

748

1038

749

1039

def dbus_service_property(dbus_interface,

1040

signature="v",

1041

access="readwrite",

1042

byte_arrays=False):

750

def dbus_service_property(dbus_interface, signature="v",

751

access="readwrite", byte_arrays=False):

1043

752

"""Decorators for marking methods of a DBusObjectWithProperties to

1044

753

become properties on the D-Bus.

1045

754

1054

763

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

1055

764

if byte_arrays and signature != "ay":

1056

765

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

1057

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

1058

766

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

1059

767

def decorator(func):

1060

768

func._dbus_is_property = True

1061

769

func._dbus_interface = dbus_interface

1066

774

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

1067

775

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

1068

776

return func

1069

1070

777

return decorator

1071

778

1072

779

1081

788

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

1082

789

"false"}

1083

790

"""

1084

1085

791

def decorator(func):

1086

792

func._dbus_is_interface = True

1087

793

func._dbus_interface = dbus_interface

1088

794

func._dbus_name = dbus_interface

1089

795

return func

1090

1091

796

return decorator

1092

797

1093

798

1095

800

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

1096

801

Usage:

1097

802

1098

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

1099

"org.freedesktop.DBus.Property."

1100

"EmitsChangedSignal": "false"})

1101

803

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

1102

804

access="r")

805

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

806

"org.freedesktop.DBus.Property."

807

"EmitsChangedSignal": "false"})

1103

808

def Property_dbus_property(self):

1104

809

return dbus.Boolean(False)

1105

1106

See also the DBusObjectWithAnnotations class.

1107

810

"""

1108

1109

811

def decorator(func):

1110

812

func._dbus_annotations = annotations

1111

813

return func

1112

1113

814

return decorator

1114

815

1115

816

1116

817

class DBusPropertyException(dbus.exceptions.DBusException):

1117

818

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

1118

819

"""

1119

pass

820

def __unicode__(self):

821

return unicode(str(self))

1120

822

1121

823

1122

824

class DBusPropertyAccessException(DBusPropertyException):

1131

833

pass

1132

834

1133

835

1134

class DBusObjectWithAnnotations(dbus.service.Object):

1135

"""A D-Bus object with annotations.

836

class DBusObjectWithProperties(dbus.service.Object):

837

"""A D-Bus object with properties.

1136

838

1137

Classes inheriting from this can use the dbus_annotations

1138

decorator to add annotations to methods or signals.

839

Classes inheriting from this can use the dbus_service_property

840

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

841

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

1139

842

"""

1140

843

1141

844

@staticmethod

1145

848

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

1146

849

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

1147

850

"""

1148

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

851

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

1149

852

False)

1150

853

1151

854

def _get_all_dbus_things(self, thing):

1152

855

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

1153

856

"""

1154

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

857

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

858

name),

1155

859

athing.__get__(self))

1156

860

for cls in self.__class__.__mro__

1157

861

for name, athing in

1158

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

1159

1160

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1161

out_signature = "s",

1162

path_keyword = 'object_path',

1163

connection_keyword = 'connection')

1164

def Introspect(self, object_path, connection):

1165

"""Overloading of standard D-Bus method.

1166

1167

Inserts annotation tags on methods and signals.

1168

"""

1169

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

1170

connection)

1171

try:

1172

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

1173

1174

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

1175

# Add annotation tags

1176

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

1177

for tag in if_tag.getElementsByTagName(typ):

1178

annots = dict()

1179

for name, prop in (self.

1180

_get_all_dbus_things(typ)):

1181

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

1182

and prop._dbus_interface

1183

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

1184

annots.update(getattr(

1185

prop, "_dbus_annotations", {}))

1186

for name, value in annots.items():

1187

ann_tag = document.createElement(

1188

"annotation")

1189

ann_tag.setAttribute("name", name)

1190

ann_tag.setAttribute("value", value)

1191

tag.appendChild(ann_tag)

1192

# Add interface annotation tags

1193

for annotation, value in dict(

1194

itertools.chain.from_iterable(

1195

annotations().items()

1196

for name, annotations

1197

in self._get_all_dbus_things("interface")

1198

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

1199

)).items():

1200

ann_tag = document.createElement("annotation")

1201

ann_tag.setAttribute("name", annotation)

1202

ann_tag.setAttribute("value", value)

1203

if_tag.appendChild(ann_tag)

1204

# Fix argument name for the Introspect method itself

1205

if (if_tag.getAttribute("name")

1206

== dbus.INTROSPECTABLE_IFACE):

1207

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

1208

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

1209

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

1210

if (arg.getAttribute("direction")

1211

== "out"):

1212

arg.setAttribute("name",

1213

"xml_data")

1214

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

1215

document.unlink()

1216

except (AttributeError, xml.dom.DOMException,

1217

xml.parsers.expat.ExpatError) as error:

1218

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

1219

exc_info=error)

1220

return xmlstring

1221

1222

1223

class DBusObjectWithProperties(DBusObjectWithAnnotations):

1224

"""A D-Bus object with properties.

1225

1226

Classes inheriting from this can use the dbus_service_property

1227

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

1228

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

1229

"""

862

inspect.getmembers(cls,

863

self._is_dbus_thing(thing)))

1230

864

1231

865

def _get_dbus_property(self, interface_name, property_name):

1232

866

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

1233

867

property with the specified name and interface.

1234

868

"""

1235

for cls in self.__class__.__mro__:

1236

for name, value in inspect.getmembers(

1237

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

869

for cls in self.__class__.__mro__:

870

for name, value in (inspect.getmembers

871

(cls,

872

self._is_dbus_thing("property"))):

1238

873

if (value._dbus_name == property_name

1239

874

and value._dbus_interface == interface_name):

1240

875

return value.__get__(self)

1241

876

1242

877

# No such property

1243

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

1244

self.dbus_object_path, interface_name, property_name))

1245

1246

@classmethod

1247

def _get_all_interface_names(cls):

1248

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

1249

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

1250

"_dbus_interface", None)

1251

for x in (inspect.getmro(cls))

1252

for attr in dir(x))

1253

if name is not None)

1254

1255

@dbus.service.method(dbus.PROPERTIES_IFACE,

1256

in_signature="ss",

878

raise DBusPropertyNotFound(self.dbus_object_path + ":"

879

+ interface_name + "."

880

+ property_name)

881

882

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

1257

883

out_signature="v")

1258

884

def Get(self, interface_name, property_name):

1259

885

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

1277

903

# The byte_arrays option is not supported yet on

1278

904

# signatures other than "ay".

1279

905

if prop._dbus_signature != "ay":

1280

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

1281

"'ay' signature {!r}"

1282

.format(prop._dbus_signature))

906

raise ValueError

1283

907

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

1284

908

for byte in value))

1285

909

prop(value)

1286

910

1287

@dbus.service.method(dbus.PROPERTIES_IFACE,

1288

in_signature="s",

911

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

1289

912

out_signature="a{sv}")

1290

913

def GetAll(self, interface_name):

1291

914

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

1306

929

if not hasattr(value, "variant_level"):

1307

930

properties[name] = value

1308

931

continue

1309

properties[name] = type(value)(

1310

value, variant_level = value.variant_level + 1)

932

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

933

value.variant_level+1)

1311

934

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

1312

935

1313

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

1314

def PropertiesChanged(self, interface_name, changed_properties,

1315

invalidated_properties):

1316

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

1317

standard.

1318

"""

1319

pass

1320

1321

936

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1322

937

out_signature="s",

1323

938

path_keyword='object_path',

1327

942

1328

943

Inserts property tags and interface annotation tags.

1329

944

"""

1330

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1331

object_path,

1332

connection)

945

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

946

connection)

1333

947

try:

1334

948

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

1335

1336

949

def make_tag(document, name, prop):

1337

950

e = document.createElement("property")

1338

951

e.setAttribute("name", name)

1339

952

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

1340

953

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

1341

954

return e

1342

1343

955

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

1344

956

# Add property tags

1345

957

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

1348

960

if prop._dbus_interface

1349

961

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

1350

962

if_tag.appendChild(tag)

1351

# Add annotation tags for properties

1352

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

1353

annots = dict()

1354

for name, prop in self._get_all_dbus_things(

1355

"property"):

1356

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

1357

and prop._dbus_interface

1358

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

1359

annots.update(getattr(

1360

prop, "_dbus_annotations", {}))

1361

for name, value in annots.items():

1362

ann_tag = document.createElement(

1363

"annotation")

1364

ann_tag.setAttribute("name", name)

1365

ann_tag.setAttribute("value", value)

1366

tag.appendChild(ann_tag)

963

# Add annotation tags

964

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

965

for tag in if_tag.getElementsByTagName(typ):

966

annots = dict()

967

for name, prop in (self.

968

_get_all_dbus_things(typ)):

969

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

970

and prop._dbus_interface

971

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

972

annots.update(getattr

973

(prop,

974

"_dbus_annotations",

975

{}))

976

for name, value in annots.iteritems():

977

ann_tag = document.createElement(

978

"annotation")

979

ann_tag.setAttribute("name", name)

980

ann_tag.setAttribute("value", value)

981

tag.appendChild(ann_tag)

982

# Add interface annotation tags

983

for annotation, value in dict(

984

itertools.chain.from_iterable(

985

annotations().iteritems()

986

for name, annotations in

987

self._get_all_dbus_things("interface")

988

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

989

)).iteritems():

990

ann_tag = document.createElement("annotation")

991

ann_tag.setAttribute("name", annotation)

992

ann_tag.setAttribute("value", value)

993

if_tag.appendChild(ann_tag)

1367

994

# Add the names to the return values for the

1368

995

# "org.freedesktop.DBus.Properties" methods

1369

996

if (if_tag.getAttribute("name")

1387

1014

exc_info=error)

1388

1015

return xmlstring

1389

1016

1390

try:

1391

dbus.OBJECT_MANAGER_IFACE

1392

except AttributeError:

1393

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

1394

1395

class DBusObjectWithObjectManager(DBusObjectWithAnnotations):

1396

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

1397

1398

Classes inheriting from this exposes the standard

1399

GetManagedObjects call and the InterfacesAdded and

1400

InterfacesRemoved signals on the standard

1401

"org.freedesktop.DBus.ObjectManager" interface.

1402

1403

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

1404

manually.

1405

"""

1406

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

1407

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

1408

def GetManagedObjects(self):

1409

"""This function must be overridden"""

1410

raise NotImplementedError()

1411

1412

@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,

1413

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

1414

def InterfacesAdded(self, object_path, interfaces_and_properties):

1415

pass

1416

1417

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

1418

def InterfacesRemoved(self, object_path, interfaces):

1419

pass

1420

1421

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1422

out_signature = "s",

1423

path_keyword = 'object_path',

1424

connection_keyword = 'connection')

1425

def Introspect(self, object_path, connection):

1426

"""Overloading of standard D-Bus method.

1427

1428

Override return argument name of GetManagedObjects to be

1429

"objpath_interfaces_and_properties"

1430

"""

1431

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1432

object_path,

1433

connection)

1434

try:

1435

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

1436

1437

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

1438

# Fix argument name for the GetManagedObjects method

1439

if (if_tag.getAttribute("name")

1440

== dbus.OBJECT_MANAGER_IFACE):

1441

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

1442

if (cn.getAttribute("name")

1443

== "GetManagedObjects"):

1444

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

1445

if (arg.getAttribute("direction")

1446

== "out"):

1447

arg.setAttribute(

1448

"name",

1449

"objpath_interfaces"

1450

"_and_properties")

1451

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

1452

document.unlink()

1453

except (AttributeError, xml.dom.DOMException,

1454

xml.parsers.expat.ExpatError) as error:

1455

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

1456

exc_info = error)

1457

return xmlstring

1458

1459

def datetime_to_dbus(dt, variant_level=0):

1017

1018

def datetime_to_dbus (dt, variant_level=0):

1460

1019

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

1461

1020

if dt is None:

1462

1021

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

1463

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

1022

return dbus.String(dt.isoformat(),

1023

variant_level=variant_level)

1464

1024

1465

1025

1466

1026

def alternate_dbus_interfaces(alt_interface_names, deprecate=True):

1469

1029

interface names according to the "alt_interface_names" mapping.

1470

1030

Usage:

1471

1031

1472

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

1473

"net.example.AlternateInterface"})

1032

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

1033

"net.example.AlternateInterface"})

1474

1034

class SampleDBusObject(dbus.service.Object):

1475

1035

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

1476

1036

def SampleDBusMethod():

1486

1046

(from DBusObjectWithProperties) and interfaces (from the

1487

1047

dbus_interface_annotations decorator).

1488

1048

"""

1489

1490

1049

def wrapper(cls):

1491

1050

for orig_interface_name, alt_interface_name in (

1492

alt_interface_names.items()):

1051

alt_interface_names.iteritems()):

1493

1052

attr = {}

1494

1053

interface_names = set()

1495

1054

# Go though all attributes of the class

1497

1056

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

1498

1057

# with the wrong interface name

1499

1058

if (not hasattr(attribute, "_dbus_interface")

1500

or not attribute._dbus_interface.startswith(

1501

orig_interface_name)):

1059

or not attribute._dbus_interface

1060

.startswith(orig_interface_name)):

1502

1061

continue

1503

1062

# Create an alternate D-Bus interface name based on

1504

1063

# the current name

1505

alt_interface = attribute._dbus_interface.replace(

1506

orig_interface_name, alt_interface_name)

1064

alt_interface = (attribute._dbus_interface

1065

.replace(orig_interface_name,

1066

alt_interface_name))

1507

1067

interface_names.add(alt_interface)

1508

1068

# Is this a D-Bus signal?

1509

1069

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

1510

if sys.version_info.major == 2:

1511

# Extract the original non-method undecorated

1512

# function by black magic

1513

nonmethod_func = (dict(

1070

# Extract the original non-method function by

1071

# black magic

1072

nonmethod_func = (dict(

1514

1073

zip(attribute.func_code.co_freevars,

1515

attribute.__closure__))

1516

["func"].cell_contents)

1517

else:

1518

nonmethod_func = attribute

1074

attribute.__closure__))["func"]

1075

.cell_contents)

1519

1076

# Create a new, but exactly alike, function

1520

1077

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

1521

1078

# with the alternate D-Bus interface name

1522

if sys.version_info.major == 2:

1523

new_function = types.FunctionType(

1524

nonmethod_func.func_code,

1525

nonmethod_func.func_globals,

1526

nonmethod_func.func_name,

1527

nonmethod_func.func_defaults,

1528

nonmethod_func.func_closure)

1529

else:

1530

new_function = types.FunctionType(

1531

nonmethod_func.__code__,

1532

nonmethod_func.__globals__,

1533

nonmethod_func.__name__,

1534

nonmethod_func.__defaults__,

1535

nonmethod_func.__closure__)

1536

new_function = (dbus.service.signal(

1537

alt_interface,

1538

attribute._dbus_signature)(new_function))

1079

new_function = (dbus.service.signal

1080

(alt_interface,

1081

attribute._dbus_signature)

1082

(types.FunctionType(

1083

nonmethod_func.func_code,

1084

nonmethod_func.func_globals,

1085

nonmethod_func.func_name,

1086

nonmethod_func.func_defaults,

1087

nonmethod_func.func_closure)))

1539

1088

# Copy annotations, if any

1540

1089

try:

1541

new_function._dbus_annotations = dict(

1542

attribute._dbus_annotations)

1090

new_function._dbus_annotations = (

1091

dict(attribute._dbus_annotations))

1543

1092

except AttributeError:

1544

1093

pass

1545

1094

# Define a creator of a function to call both the

1550

1099

"""This function is a scope container to pass

1551

1100

func1 and func2 to the "call_both" function

1552

1101

outside of its arguments"""

1553

1554

@functools.wraps(func2)

1555

1102

def call_both(*args, **kwargs):

1556

1103

"""This function will emit two D-Bus

1557

1104

signals by calling func1 and func2"""

1558

1105

func1(*args, **kwargs)

1559

1106

func2(*args, **kwargs)

1560

# Make wrapper function look like a D-Bus signal

1561

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

1562

if name.startswith("_dbus_"):

1563

setattr(call_both, name, attr)

1564

1565

1107

return call_both

1566

1108

# Create the "call_both" function and add it to

1567

1109

# the class

1572

1114

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

1573

1115

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

1574

1116

# to the class.

1575

attr[attrname] = (

1576

dbus.service.method(

1577

alt_interface,

1578

attribute._dbus_in_signature,

1579

attribute._dbus_out_signature)

1580

(types.FunctionType(attribute.func_code,

1581

attribute.func_globals,

1582

attribute.func_name,

1583

attribute.func_defaults,

1584

attribute.func_closure)))

1117

attr[attrname] = (dbus.service.method

1118

(alt_interface,

1119

attribute._dbus_in_signature,

1120

attribute._dbus_out_signature)

1121

(types.FunctionType

1122

(attribute.func_code,

1123

attribute.func_globals,

1124

attribute.func_name,

1125

attribute.func_defaults,

1126

attribute.func_closure)))

1585

1127

# Copy annotations, if any

1586

1128

try:

1587

attr[attrname]._dbus_annotations = dict(

1588

attribute._dbus_annotations)

1129

attr[attrname]._dbus_annotations = (

1130

dict(attribute._dbus_annotations))

1589

1131

except AttributeError:

1590

1132

pass

1591

1133

# Is this a D-Bus property?

1594

1136

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

1595

1137

# property with the alternate D-Bus interface

1596

1138

# name. Add it to the class.

1597

attr[attrname] = (dbus_service_property(

1598

alt_interface, attribute._dbus_signature,

1599

attribute._dbus_access,

1600

attribute._dbus_get_args_options

1601

["byte_arrays"])

1602

(types.FunctionType(

1603

attribute.func_code,

1604

attribute.func_globals,

1605

attribute.func_name,

1606

attribute.func_defaults,

1607

attribute.func_closure)))

1139

attr[attrname] = (dbus_service_property

1140

(alt_interface,

1141

attribute._dbus_signature,

1142

attribute._dbus_access,

1143

attribute

1144

._dbus_get_args_options

1145

["byte_arrays"])

1146

(types.FunctionType

1147

(attribute.func_code,

1148

attribute.func_globals,

1149

attribute.func_name,

1150

attribute.func_defaults,

1151

attribute.func_closure)))

1608

1152

# Copy annotations, if any

1609

1153

try:

1610

attr[attrname]._dbus_annotations = dict(

1611

attribute._dbus_annotations)

1154

attr[attrname]._dbus_annotations = (

1155

dict(attribute._dbus_annotations))

1612

1156

except AttributeError:

1613

1157

pass

1614

1158

# Is this a D-Bus interface?

1617

1161

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

1618

1162

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

1619

1163

# to the class.

1620

attr[attrname] = (

1621

dbus_interface_annotations(alt_interface)

1622

(types.FunctionType(attribute.func_code,

1623

attribute.func_globals,

1624

attribute.func_name,

1625

attribute.func_defaults,

1626

attribute.func_closure)))

1164

attr[attrname] = (dbus_interface_annotations

1165

(alt_interface)

1166

(types.FunctionType

1167

(attribute.func_code,

1168

attribute.func_globals,

1169

attribute.func_name,

1170

attribute.func_defaults,

1171

attribute.func_closure)))

1627

1172

if deprecate:

1628

1173

# Deprecate all alternate interfaces

1629

iname="_AlternateDBusNames_interface_annotation{}"

1174

iname="_AlternateDBusNames_interface_annotation{0}"

1630

1175

for interface_name in interface_names:

1631

1632

1176

@dbus_interface_annotations(interface_name)

1633

1177

def func(self):

1634

1178

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

1635

"true" }

1179

"true" }

1636

1180

# Find an unused name

1637

1181

for aname in (iname.format(i)

1638

1182

for i in itertools.count()):

1642

1186

if interface_names:

1643

1187

# Replace the class with a new subclass of it with

1644

1188

# methods, signals, etc. as created above.

1645

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

1646

(cls, ), attr)

1189

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

1190

(cls,), attr)

1647

1191

return cls

1648

1649

1192

return wrapper

1650

1193

1651

1194

1652

1195

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

1653

"se.bsnet.fukt.Mandos"})

1196

"se.bsnet.fukt.Mandos"})

1654

1197

class ClientDBus(Client, DBusObjectWithProperties):

1655

1198

"""A Client class using D-Bus

1656

1199

1660

1203

"""

1661

1204

1662

1205

runtime_expansions = (Client.runtime_expansions

1663

+ ("dbus_object_path", ))

1664

1665

_interface = "se.recompile.Mandos.Client"

1206

+ ("dbus_object_path",))

1666

1207

1667

1208

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

1668

1209

1671

1212

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

1672

1213

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

1673

1214

# the D-Bus

1674

client_object_name = str(self.name).translate(

1215

client_object_name = unicode(self.name).translate(

1675

1216

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

1676

1217

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

1677

self.dbus_object_path = dbus.ObjectPath(

1678

"/clients/" + client_object_name)

1218

self.dbus_object_path = (dbus.ObjectPath

1219

("/clients/" + client_object_name))

1679

1220

DBusObjectWithProperties.__init__(self, self.bus,

1680

1221

self.dbus_object_path)

1681

1222

1682

def notifychangeproperty(transform_func, dbus_name,

1683

type_func=lambda x: x,

1684

variant_level=1,

1685

invalidate_only=False,

1686

_interface=_interface):

1223

def notifychangeproperty(transform_func,

1224

dbus_name, type_func=lambda x: x,

1225

variant_level=1):

1687

1226

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

1688

1227

its changes to DBus.

1689

1228

1694

1233

to the D-Bus. Default: no transform

1695

1234

variant_level: D-Bus variant level. Default: 1

1696

1235

"""

1697

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

1698

1236

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

1699

1237

def setter(self, value):

1700

1238

if hasattr(self, "dbus_object_path"):

1701

1239

if (not hasattr(self, attrname) or

1702

1240

type_func(getattr(self, attrname, None))

1703

1241

!= type_func(value)):

1704

if invalidate_only:

1705

self.PropertiesChanged(

1706

_interface, dbus.Dictionary(),

1707

dbus.Array((dbus_name, )))

1708

else:

1709

dbus_value = transform_func(

1710

type_func(value),

1711

variant_level = variant_level)

1712

self.PropertyChanged(dbus.String(dbus_name),

1713

dbus_value)

1714

self.PropertiesChanged(

1715

_interface,

1716

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

1717

dbus_value }),

1718

dbus.Array())

1242

dbus_value = transform_func(type_func(value),

1243

variant_level

1244

=variant_level)

1245

self.PropertyChanged(dbus.String(dbus_name),

1246

dbus_value)

1719

1247

setattr(self, attrname, value)

1720

1248

1721

1249

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

1727

1255

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

1728

1256

last_enabled = notifychangeproperty(datetime_to_dbus,

1729

1257

"LastEnabled")

1730

checker = notifychangeproperty(

1731

dbus.Boolean, "CheckerRunning",

1732

type_func = lambda checker: checker is not None)

1258

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

1259

type_func = lambda checker:

1260

checker is not None)

1733

1261

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1734

1262

"LastCheckedOK")

1735

1263

last_checker_status = notifychangeproperty(dbus.Int16,

1738

1266

datetime_to_dbus, "LastApprovalRequest")

1739

1267

approved_by_default = notifychangeproperty(dbus.Boolean,

1740

1268

"ApprovedByDefault")

1741

approval_delay = notifychangeproperty(

1742

dbus.UInt64, "ApprovalDelay",

1743

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

1269

approval_delay = notifychangeproperty(dbus.UInt64,

1270

"ApprovalDelay",

1271

type_func =

1272

timedelta_to_milliseconds)

1744

1273

approval_duration = notifychangeproperty(

1745

1274

dbus.UInt64, "ApprovalDuration",

1746

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

1275

type_func = timedelta_to_milliseconds)

1747

1276

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

1748

timeout = notifychangeproperty(

1749

dbus.UInt64, "Timeout",

1750

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

1277

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

1278

type_func =

1279

timedelta_to_milliseconds)

1751

1280

extended_timeout = notifychangeproperty(

1752

1281

dbus.UInt64, "ExtendedTimeout",

1753

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

1754

interval = notifychangeproperty(

1755

dbus.UInt64, "Interval",

1756

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

1282

type_func = timedelta_to_milliseconds)

1283

interval = notifychangeproperty(dbus.UInt64,

1284

"Interval",

1285

type_func =

1286

timedelta_to_milliseconds)

1757

1287

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

1758

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

1759

invalidate_only=True)

1760

1288

1761

1289

del notifychangeproperty

1762

1290

1769

1297

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

1770

1298

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

1771

1299

1772

def checker_callback(self, source, condition,

1773

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

1774

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

1775

connection, command, *args,

1776

**kwargs)

1777

exitstatus = self.last_checker_status

1778

if exitstatus >= 0:

1300

def checker_callback(self, pid, condition, command,

1301

*args, **kwargs):

1302

self.checker_callback_tag = None

1303

self.checker = None

1304

if os.WIFEXITED(condition):

1305

exitstatus = os.WEXITSTATUS(condition)

1779

1306

# Emit D-Bus signal

1780

1307

self.CheckerCompleted(dbus.Int16(exitstatus),

1781

# This is specific to GNU libC

1782

dbus.Int64(exitstatus << 8),

1308

dbus.Int64(condition),

1783

1309

dbus.String(command))

1784

1310

else:

1785

1311

# Emit D-Bus signal

1786

1312

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

1787

dbus.Int64(

1788

# This is specific to GNU libC

1789

(exitstatus << 8)

1790

| self.last_checker_signal),

1313

dbus.Int64(condition),

1791

1314

dbus.String(command))

1792

return ret

1315

1316

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

1317

*args, **kwargs)

1793

1318

1794

1319

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

1795

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

1320

old_checker = self.checker

1321

if self.checker is not None:

1322

old_checker_pid = self.checker.pid

1323

else:

1324

old_checker_pid = None

1796

1325

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

1797

1326

# Only if new checker process was started

1798

1327

if (self.checker is not None

1806

1335

return False

1807

1336

1808

1337

def approve(self, value=True):

1338

self.send_changedstate()

1809

1339

self.approved = value

1810

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

1811

* 1000), self._reset_approved)

1812

self.send_changedstate()

1340

gobject.timeout_add(timedelta_to_milliseconds

1341

(self.approval_duration),

1342

self._reset_approved)

1813

1343

1814

1344

## D-Bus methods, signals & properties

1345

_interface = "se.recompile.Mandos.Client"

1815

1346

1816

1347

## Interfaces

1817

1348

1349

@dbus_interface_annotations(_interface)

1350

def _foo(self):

1351

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

1352

"false"}

1353

1818

1354

## Signals

1819

1355

1820

1356

# CheckerCompleted - signal

1830

1366

pass

1831

1367

1832

1368

# PropertyChanged - signal

1833

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

1834

1369

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

1835

1370

def PropertyChanged(self, property, value):

1836

1371

"D-Bus signal"

1870

1405

self.checked_ok()

1871

1406

1872

1407

# Enable - method

1873

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

1874

1408

@dbus.service.method(_interface)

1875

1409

def Enable(self):

1876

1410

"D-Bus method"

1877

1411

self.enable()

1878

1412

1879

1413

# StartChecker - method

1880

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

1881

1414

@dbus.service.method(_interface)

1882

1415

def StartChecker(self):

1883

1416

"D-Bus method"

1884

1417

self.start_checker()

1885

1418

1886

1419

# Disable - method

1887

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

1888

1420

@dbus.service.method(_interface)

1889

1421

def Disable(self):

1890

1422

"D-Bus method"

1891

1423

self.disable()

1892

1424

1893

1425

# StopChecker - method

1894

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

1895

1426

@dbus.service.method(_interface)

1896

1427

def StopChecker(self):

1897

1428

self.stop_checker()

1904

1435

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

1905

1436

1906

1437

# ApprovedByDefault - property

1907

@dbus_service_property(_interface,

1908

signature="b",

1438

@dbus_service_property(_interface, signature="b",

1909

1439

access="readwrite")

1910

1440

def ApprovedByDefault_dbus_property(self, value=None):

1911

1441

if value is None: # get

1913

1443

self.approved_by_default = bool(value)

1914

1444

1915

1445

# ApprovalDelay - property

1916

@dbus_service_property(_interface,

1917

signature="t",

1446

@dbus_service_property(_interface, signature="t",

1918

1447

access="readwrite")

1919

1448

def ApprovalDelay_dbus_property(self, value=None):

1920

1449

if value is None: # get

1921

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

1922

* 1000)

1450

return dbus.UInt64(self.approval_delay_milliseconds())

1923

1451

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

1924

1452

1925

1453

# ApprovalDuration - property

1926

@dbus_service_property(_interface,

1927

signature="t",

1454

@dbus_service_property(_interface, signature="t",

1928

1455

access="readwrite")

1929

1456

def ApprovalDuration_dbus_property(self, value=None):

1930

1457

if value is None: # get

1931

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

1932

* 1000)

1458

return dbus.UInt64(timedelta_to_milliseconds(

1459

self.approval_duration))

1933

1460

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

1934

1461

1935

1462

# Name - property

1936

@dbus_annotations(

1937

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

1938

1463

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

1939

1464

def Name_dbus_property(self):

1940

1465

return dbus.String(self.name)

1941

1466

1942

1467

# Fingerprint - property

1943

@dbus_annotations(

1944

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

1945

1468

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

1946

1469

def Fingerprint_dbus_property(self):

1947

1470

return dbus.String(self.fingerprint)

1948

1471

1949

1472

# Host - property

1950

@dbus_service_property(_interface,

1951

signature="s",

1473

@dbus_service_property(_interface, signature="s",

1952

1474

access="readwrite")

1953

1475

def Host_dbus_property(self, value=None):

1954

1476

if value is None: # get

1955

1477

return dbus.String(self.host)

1956

self.host = str(value)

1478

self.host = unicode(value)

1957

1479

1958

1480

# Created - property

1959

@dbus_annotations(

1960

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

1961

1481

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

1962

1482

def Created_dbus_property(self):

1963

1483

return datetime_to_dbus(self.created)

1968

1488

return datetime_to_dbus(self.last_enabled)

1969

1489

1970

1490

# Enabled - property

1971

@dbus_service_property(_interface,

1972

signature="b",

1491

@dbus_service_property(_interface, signature="b",

1973

1492

access="readwrite")

1974

1493

def Enabled_dbus_property(self, value=None):

1975

1494

if value is None: # get

1980

1499

self.disable()

1981

1500

1982

1501

# LastCheckedOK - property

1983

@dbus_service_property(_interface,

1984

signature="s",

1502

@dbus_service_property(_interface, signature="s",

1985

1503

access="readwrite")

1986

1504

def LastCheckedOK_dbus_property(self, value=None):

1987

1505

if value is not None:

1990

1508

return datetime_to_dbus(self.last_checked_ok)

1991

1509

1992

1510

# LastCheckerStatus - property

1993

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

1511

@dbus_service_property(_interface, signature="n",

1512

access="read")

1994

1513

def LastCheckerStatus_dbus_property(self):

1995

1514

return dbus.Int16(self.last_checker_status)

1996

1515

2005

1524

return datetime_to_dbus(self.last_approval_request)

2006

1525

2007

1526

# Timeout - property

2008

@dbus_service_property(_interface,

2009

signature="t",

1527

@dbus_service_property(_interface, signature="t",

2010

1528

access="readwrite")

2011

1529

def Timeout_dbus_property(self, value=None):

2012

1530

if value is None: # get

2013

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

2014

old_timeout = self.timeout

1531

return dbus.UInt64(self.timeout_milliseconds())

2015

1532

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

2016

# Reschedule disabling

1533

# Reschedule timeout

2017

1534

if self.enabled:

2018

1535

now = datetime.datetime.utcnow()

2019

self.expires += self.timeout - old_timeout

2020

if self.expires <= now:

1536

time_to_die = timedelta_to_milliseconds(

1537

(self.last_checked_ok + self.timeout) - now)

1538

if time_to_die <= 0:

2021

1539

# The timeout has passed

2022

1540

self.disable()

2023

1541

else:

1542

self.expires = (now +

1543

datetime.timedelta(milliseconds =

1544

time_to_die))

2024

1545

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

2025

1546

is None):

2026

1547

return

2027

1548

gobject.source_remove(self.disable_initiator_tag)

2028

self.disable_initiator_tag = gobject.timeout_add(

2029

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

2030

self.disable)

1549

self.disable_initiator_tag = (gobject.timeout_add

1550

(time_to_die,

1551

self.disable))

2031

1552

2032

1553

# ExtendedTimeout - property

2033

@dbus_service_property(_interface,

2034

signature="t",

1554

@dbus_service_property(_interface, signature="t",

2035

1555

access="readwrite")

2036

1556

def ExtendedTimeout_dbus_property(self, value=None):

2037

1557

if value is None: # get

2038

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

2039

* 1000)

1558

return dbus.UInt64(self.extended_timeout_milliseconds())

2040

1559

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

2041

1560

2042

1561

# Interval - property

2043

@dbus_service_property(_interface,

2044

signature="t",

1562

@dbus_service_property(_interface, signature="t",

2045

1563

access="readwrite")

2046

1564

def Interval_dbus_property(self, value=None):

2047

1565

if value is None: # get

2048

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

1566

return dbus.UInt64(self.interval_milliseconds())

2049

1567

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

2050

1568

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

2051

1569

return

2052

1570

if self.enabled:

2053

1571

# Reschedule checker run

2054

1572

gobject.source_remove(self.checker_initiator_tag)

2055

self.checker_initiator_tag = gobject.timeout_add(

2056

value, self.start_checker)

2057

self.start_checker() # Start one now, too

1573

self.checker_initiator_tag = (gobject.timeout_add

1574

(value, self.start_checker))

1575

self.start_checker() # Start one now, too

2058

1576

2059

1577

# Checker - property

2060

@dbus_service_property(_interface,

2061

signature="s",

1578

@dbus_service_property(_interface, signature="s",

2062

1579

access="readwrite")

2063

1580

def Checker_dbus_property(self, value=None):

2064

1581

if value is None: # get

2065

1582

return dbus.String(self.checker_command)

2066

self.checker_command = str(value)

1583

self.checker_command = unicode(value)

2067

1584

2068

1585

# CheckerRunning - property

2069

@dbus_service_property(_interface,

2070

signature="b",

1586

@dbus_service_property(_interface, signature="b",

2071

1587

access="readwrite")

2072

1588

def CheckerRunning_dbus_property(self, value=None):

2073

1589

if value is None: # get

2078

1594

self.stop_checker()

2079

1595

2080

1596

# ObjectPath - property

2081

@dbus_annotations(

2082

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

2083

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

2084

1597

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

2085

1598

def ObjectPath_dbus_property(self):

2086

1599

return self.dbus_object_path # is already a dbus.ObjectPath

2087

1600

2088

1601

# Secret = property

2089

@dbus_annotations(

2090

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

2091

"invalidates"})

2092

@dbus_service_property(_interface,

2093

signature="ay",

2094

access="write",

2095

byte_arrays=True)

1602

@dbus_service_property(_interface, signature="ay",

1603

access="write", byte_arrays=True)

2096

1604

def Secret_dbus_property(self, value):

2097

self.secret = bytes(value)

1605

self.secret = str(value)

2098

1606

2099

1607

del _interface

2100

1608

2104

1612

self._pipe = child_pipe

2105

1613

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

2106

1614

if not self._pipe.recv():

2107

raise KeyError(fpr)

1615

raise KeyError()

2108

1616

2109

1617

def __getattribute__(self, name):

2110

1618

if name == '_pipe':

2114

1622

if data[0] == 'data':

2115

1623

return data[1]

2116

1624

if data[0] == 'function':

2117

2118

1625

def func(*args, **kwargs):

2119

1626

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

2120

1627

return self._pipe.recv()[1]

2121

2122

1628

return func

2123

1629

2124

1630

def __setattr__(self, name, value):

2136

1642

def handle(self):

2137

1643

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

2138

1644

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

2139

str(self.client_address))

1645

unicode(self.client_address))

2140

1646

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

2141

1647

self.server.child_pipe.fileno())

2142

1648

2143

session = gnutls.ClientSession(self.request)

1649

session = (gnutls.connection

1650

.ClientSession(self.request,

1651

gnutls.connection

1652

.X509Credentials()))

1653

1654

# Note: gnutls.connection.X509Credentials is really a

1655

# generic GnuTLS certificate credentials object so long as

1656

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

1657

# here despite using OpenPGP certificates.

2144

1658

2145

1659

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

2146

1660

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

2150

1664

priority = self.server.gnutls_priority

2151

1665

if priority is None:

2152

1666

priority = "NORMAL"

2153

gnutls.priority_set_direct(session._c_object, priority,

2154

None)

1667

(gnutls.library.functions

1668

.gnutls_priority_set_direct(session._c_object,

1669

priority, None))

2155

1670

2156

1671

# Start communication using the Mandos protocol

2157

1672

# Get protocol number

2159

1674

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

2160

1675

try:

2161

1676

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

2162

raise RuntimeError(line)

1677

raise RuntimeError

2163

1678

except (ValueError, IndexError, RuntimeError) as error:

2164

1679

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

2165

1680

return

2167

1682

# Start GnuTLS connection

2168

1683

try:

2169

1684

session.handshake()

2170

except gnutls.Error as error:

1685

except gnutls.errors.GNUTLSError as error:

2171

1686

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

2172

1687

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

2173

1688

# established. Just abandon the request.

2177

1692

approval_required = False

2178

1693

try:

2179

1694

try:

2180

fpr = self.fingerprint(

2181

self.peer_certificate(session))

2182

except (TypeError, gnutls.Error) as error:

1695

fpr = self.fingerprint(self.peer_certificate

1696

(session))

1697

except (TypeError,

1698

gnutls.errors.GNUTLSError) as error:

2183

1699

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

2184

1700

return

2185

1701

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

2198

1714

while True:

2199

1715

if not client.enabled:

2200

1716

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

2201

client.name)

1717

client.name)

2202

1718

if self.server.use_dbus:

2203

1719

# Emit D-Bus signal

2204

1720

client.Rejected("Disabled")

2213

1729

if self.server.use_dbus:

2214

1730

# Emit D-Bus signal

2215

1731

client.NeedApproval(

2216

client.approval_delay.total_seconds()

2217

* 1000, client.approved_by_default)

1732

client.approval_delay_milliseconds(),

1733

client.approved_by_default)

2218

1734

else:

2219

1735

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

2220

1736

client.name)

2226

1742

#wait until timeout or approved

2227

1743

time = datetime.datetime.now()

2228

1744

client.changedstate.acquire()

2229

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

1745

(client.changedstate.wait

1746

(float(client.timedelta_to_milliseconds(delay)

1747

/ 1000)))

2230

1748

client.changedstate.release()

2231

1749

time2 = datetime.datetime.now()

2232

1750

if (time2 - time) >= delay:

2243

1761

else:

2244

1762

delay -= time2 - time

2245

1763

2246

try:

2247

session.send(client.secret)

2248

except gnutls.Error as error:

2249

logger.warning("gnutls send failed",

2250

exc_info = error)

2251

return

1764

sent_size = 0

1765

while sent_size < len(client.secret):

1766

try:

1767

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

1768

except gnutls.errors.GNUTLSError as error:

1769

logger.warning("gnutls send failed",

1770

exc_info=error)

1771

return

1772

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

1773

sent, len(client.secret)

1774

- (sent_size + sent))

1775

sent_size += sent

2252

1776

2253

1777

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

2254

1778

# bump the timeout using extended_timeout

2262

1786

client.approvals_pending -= 1

2263

1787

try:

2264

1788

session.bye()

2265

except gnutls.Error as error:

1789

except gnutls.errors.GNUTLSError as error:

2266

1790

logger.warning("GnuTLS bye failed",

2267

1791

exc_info=error)

2268

1792

2270

1794

def peer_certificate(session):

2271

1795

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

2272

1796

# If not an OpenPGP certificate...

2273

if (gnutls.certificate_type_get(session._c_object)

2274

!= gnutls.CRT_OPENPGP):

2275

# ...return invalid data

2276

return b""

1797

if (gnutls.library.functions

1798

.gnutls_certificate_type_get(session._c_object)

1799

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

1800

# ...do the normal thing

1801

return session.peer_certificate

2277

1802

list_size = ctypes.c_uint(1)

2278

cert_list = (gnutls.certificate_get_peers

1803

cert_list = (gnutls.library.functions

1804

.gnutls_certificate_get_peers

2279

1805

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

2280

1806

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

2281

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

1807

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

1808

" certificate")

2282

1809

if list_size.value == 0:

2283

1810

return None

2284

1811

cert = cert_list[0]

2288

1815

def fingerprint(openpgp):

2289

1816

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

2290

1817

# New GnuTLS "datum" with the OpenPGP public key

2291

datum = gnutls.datum_t(

2292

ctypes.cast(ctypes.c_char_p(openpgp),

2293

ctypes.POINTER(ctypes.c_ubyte)),

2294

ctypes.c_uint(len(openpgp)))

1818

datum = (gnutls.library.types

1819

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

1820

ctypes.POINTER

1821

(ctypes.c_ubyte)),

1822

ctypes.c_uint(len(openpgp))))

2295

1823

# New empty GnuTLS certificate

2296

crt = gnutls.openpgp_crt_t()

2297

gnutls.openpgp_crt_init(ctypes.byref(crt))

1824

crt = gnutls.library.types.gnutls_openpgp_crt_t()

1825

(gnutls.library.functions

1826

.gnutls_openpgp_crt_init(ctypes.byref(crt)))

2298

1827

# Import the OpenPGP public key into the certificate

2299

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

2300

gnutls.OPENPGP_FMT_RAW)

1828

(gnutls.library.functions

1829

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

1830

gnutls.library.constants

1831

.GNUTLS_OPENPGP_FMT_RAW))

2301

1832

# Verify the self signature in the key

2302

1833

crtverify = ctypes.c_uint()

2303

gnutls.openpgp_crt_verify_self(crt, 0,

2304

ctypes.byref(crtverify))

1834

(gnutls.library.functions

1835

.gnutls_openpgp_crt_verify_self(crt, 0,

1836

ctypes.byref(crtverify)))

2305

1837

if crtverify.value != 0:

2306

gnutls.openpgp_crt_deinit(crt)

2307

raise gnutls.CertificateSecurityError("Verify failed")

1838

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1839

raise (gnutls.errors.CertificateSecurityError

1840

("Verify failed"))

2308

1841

# New buffer for the fingerprint

2309

1842

buf = ctypes.create_string_buffer(20)

2310

1843

buf_len = ctypes.c_size_t()

2311

1844

# Get the fingerprint from the certificate into the buffer

2312

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

2313

ctypes.byref(buf_len))

1845

(gnutls.library.functions

1846

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

1847

ctypes.byref(buf_len)))

2314

1848

# Deinit the certificate

2315

gnutls.openpgp_crt_deinit(crt)

1849

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

2316

1850

# Convert the buffer to a Python bytestring

2317

1851

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

2318

1852

# Convert the bytestring to hexadecimal notation

2322

1856

2323

1857

class MultiprocessingMixIn(object):

2324

1858

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

2325

2326

1859

def sub_process_main(self, request, address):

2327

1860

try:

2328

1861

self.finish_request(request, address)

2340

1873

2341

1874

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

2342

1875

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

2343

2344

1876

def process_request(self, request, client_address):

2345

1877

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

2346

1878

2355

1887

2356

1888

def add_pipe(self, parent_pipe, proc):

2357

1889

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

2358

raise NotImplementedError()

1890

raise NotImplementedError

2359

1891

2360

1892

2361

1893

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

2367

1899

interface: None or a network interface name (string)

2368

1900

use_ipv6: Boolean; to use IPv6 or not

2369

1901

"""

2370

2371

1902

def __init__(self, server_address, RequestHandlerClass,

2372

interface=None,

2373

use_ipv6=True,

2374

socketfd=None):

2375

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

2376

creating a new one with socket.socket().

2377

"""

1903

interface=None, use_ipv6=True):

2378

1904

self.interface = interface

2379

1905

if use_ipv6:

2380

1906

self.address_family = socket.AF_INET6

2381

if socketfd is not None:

2382

# Save the file descriptor

2383

self.socketfd = socketfd

2384

# Save the original socket.socket() function

2385

self.socket_socket = socket.socket

2386

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

2387

#

2388

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

2389

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

2390

# patching socket.socket.)

2391

#

2392

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

2393

@functools.wraps(socket.socket)

2394

def socket_wrapper(*args, **kwargs):

2395

# Restore original function so subsequent calls are

2396

# not affected.

2397

socket.socket = self.socket_socket

2398

del self.socket_socket

2399

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

2400

# saved file descriptor.

2401

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

2402

# Replace socket.socket() function with wrapper

2403

socket.socket = socket_wrapper

2404

# The socketserver.TCPServer.__init__ will call

2405

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

2406

# socket_wrapper(), if socketfd was set.

2407

1907

socketserver.TCPServer.__init__(self, server_address,

2408

1908

RequestHandlerClass)

2409

2410

1909

def server_bind(self):

2411

1910

"""This overrides the normal server_bind() function

2412

1911

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

2418

1917

self.interface)

2419

1918

else:

2420

1919

try:

2421

self.socket.setsockopt(

2422

socket.SOL_SOCKET, SO_BINDTODEVICE,

2423

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

1920

self.socket.setsockopt(socket.SOL_SOCKET,

1921

SO_BINDTODEVICE,

1922

str(self.interface

1923

+ '\0'))

2424

1924

except socket.error as error:

2425

if error.errno == errno.EPERM:

2426

logger.error("No permission to bind to"

2427

" interface %s", self.interface)

2428

elif error.errno == errno.ENOPROTOOPT:

1925

if error[0] == errno.EPERM:

1926

logger.error("No permission to"

1927

" bind to interface %s",

1928

self.interface)

1929

elif error[0] == errno.ENOPROTOOPT:

2429

1930

logger.error("SO_BINDTODEVICE not available;"

2430

1931

" cannot bind to interface %s",

2431

1932

self.interface)

2432

elif error.errno == errno.ENODEV:

2433

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

2434

" cannot bind", self.interface)

2435

1933

else:

2436

1934

raise

2437

1935

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

2440

1938

if self.address_family == socket.AF_INET6:

2441

1939

any_address = "::" # in6addr_any

2442

1940

else:

2443

any_address = "0.0.0.0" # INADDR_ANY

1941

any_address = socket.INADDR_ANY

2444

1942

self.server_address = (any_address,

2445

1943

self.server_address[1])

2446

1944

elif not self.server_address[1]:

2447

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

1945

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

1946

0)

2448

1947

# if self.interface:

2449

1948

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

2450

1949

# 0, # port

2464

1963

2465

1964

Assumes a gobject.MainLoop event loop.

2466

1965

"""

2467

2468

1966

def __init__(self, server_address, RequestHandlerClass,

2469

interface=None,

2470

use_ipv6=True,

2471

clients=None,

2472

gnutls_priority=None,

2473

use_dbus=True,

2474

socketfd=None):

1967

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

1968

gnutls_priority=None, use_dbus=True):

2475

1969

self.enabled = False

2476

1970

self.clients = clients

2477

1971

if self.clients is None:

2481

1975

IPv6_TCPServer.__init__(self, server_address,

2482

1976

RequestHandlerClass,

2483

1977

interface = interface,

2484

use_ipv6 = use_ipv6,

2485

socketfd = socketfd)

2486

1978

use_ipv6 = use_ipv6)

2487

1979

def server_activate(self):

2488

1980

if self.enabled:

2489

1981

return socketserver.TCPServer.server_activate(self)

2493

1985

2494

1986

def add_pipe(self, parent_pipe, proc):

2495

1987

# Call "handle_ipc" for both data and EOF events

2496

gobject.io_add_watch(

2497

parent_pipe.fileno(),

2498

gobject.IO_IN | gobject.IO_HUP,

2499

functools.partial(self.handle_ipc,

2500

parent_pipe = parent_pipe,

2501

proc = proc))

1988

gobject.io_add_watch(parent_pipe.fileno(),

1989

gobject.IO_IN | gobject.IO_HUP,

1990

functools.partial(self.handle_ipc,

1991

parent_pipe =

1992

parent_pipe,

1993

proc = proc))

2502

1994

2503

def handle_ipc(self, source, condition,

2504

parent_pipe=None,

2505

proc = None,

2506

client_object=None):

1995

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

1996

proc = None, client_object=None):

2507

1997

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

2508

1998

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

2509

1999

# Wait for other process to exit

2532

2022

parent_pipe.send(False)

2533

2023

return False

2534

2024

2535

gobject.io_add_watch(

2536

parent_pipe.fileno(),

2537

gobject.IO_IN | gobject.IO_HUP,

2538

functools.partial(self.handle_ipc,

2539

parent_pipe = parent_pipe,

2540

proc = proc,

2541

client_object = client))

2025

gobject.io_add_watch(parent_pipe.fileno(),

2026

gobject.IO_IN | gobject.IO_HUP,

2027

functools.partial(self.handle_ipc,

2028

parent_pipe =

2029

parent_pipe,

2030

proc = proc,

2031

client_object =

2032

client))

2542

2033

parent_pipe.send(True)

2543

2034

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

2544

2035

# same fileno

2550

2041

2551

2042

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

2552

2043

funcname)(*args,

2553

**kwargs)))

2044

**kwargs)))

2554

2045

2555

2046

if command == 'getattr':

2556

2047

attrname = request[1]

2557

if isinstance(client_object.__getattribute__(attrname),

2558

collections.Callable):

2559

parent_pipe.send(('function', ))

2048

if callable(client_object.__getattribute__(attrname)):

2049

parent_pipe.send(('function',))

2560

2050

else:

2561

parent_pipe.send((

2562

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

2051

parent_pipe.send(('data', client_object

2052

.__getattribute__(attrname)))

2563

2053

2564

2054

if command == 'setattr':

2565

2055

attrname = request[1]

2569

2059

return True

2570

2060

2571

2061

2572

def rfc3339_duration_to_delta(duration):

2573

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

2574

2575

>>> rfc3339_duration_to_delta("P7D")

2576

datetime.timedelta(7)

2577

>>> rfc3339_duration_to_delta("PT60S")

2578

datetime.timedelta(0, 60)

2579

>>> rfc3339_duration_to_delta("PT60M")

2580

datetime.timedelta(0, 3600)

2581

>>> rfc3339_duration_to_delta("PT24H")

2582

datetime.timedelta(1)

2583

>>> rfc3339_duration_to_delta("P1W")

2584

datetime.timedelta(7)

2585

>>> rfc3339_duration_to_delta("PT5M30S")

2586

datetime.timedelta(0, 330)

2587

>>> rfc3339_duration_to_delta("P1DT3M20S")

2588

datetime.timedelta(1, 200)

2589

"""

2590

2591

# Parsing an RFC 3339 duration with regular expressions is not

2592

# possible - there would have to be multiple places for the same

2593

# values, like seconds. The current code, while more esoteric, is

2594

# cleaner without depending on a parsing library. If Python had a

2595

# built-in library for parsing we would use it, but we'd like to

2596

# avoid excessive use of external libraries.

2597

2598

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

2599

Token = collections.namedtuple("Token", (

2600

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

2601

# a "group" containing digits

2602

"value", # datetime.timedelta or None

2603

"followers")) # Tokens valid after this token

2604

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

2605

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

2606

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

2607

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

2608

datetime.timedelta(seconds=1),

2609

frozenset((token_end, )))

2610

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

2611

datetime.timedelta(minutes=1),

2612

frozenset((token_second, token_end)))

2613

token_hour = Token(re.compile(r"(\d+)H"),

2614

datetime.timedelta(hours=1),

2615

frozenset((token_minute, token_end)))

2616

token_time = Token(re.compile(r"T"),

2617

None,

2618

frozenset((token_hour, token_minute,

2619

token_second)))

2620

token_day = Token(re.compile(r"(\d+)D"),

2621

datetime.timedelta(days=1),

2622

frozenset((token_time, token_end)))

2623

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

2624

datetime.timedelta(weeks=4),

2625

frozenset((token_day, token_end)))

2626

token_year = Token(re.compile(r"(\d+)Y"),

2627

datetime.timedelta(weeks=52),

2628

frozenset((token_month, token_end)))

2629

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

2630

datetime.timedelta(weeks=1),

2631

frozenset((token_end, )))

2632

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

2633

frozenset((token_year, token_month,

2634

token_day, token_time,

2635

token_week)))

2636

# Define starting values

2637

value = datetime.timedelta() # Value so far

2638

found_token = None

2639

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

2640

s = duration # String left to parse

2641

# Loop until end token is found

2642

while found_token is not token_end:

2643

# Search for any currently valid tokens

2644

for token in followers:

2645

match = token.regexp.match(s)

2646

if match is not None:

2647

# Token found

2648

if token.value is not None:

2649

# Value found, parse digits

2650

factor = int(match.group(1), 10)

2651

# Add to value so far

2652

value += factor * token.value

2653

# Strip token from string

2654

s = token.regexp.sub("", s, 1)

2655

# Go to found token

2656

found_token = token

2657

# Set valid next tokens

2658

followers = found_token.followers

2659

break

2660

else:

2661

# No currently valid tokens were found

2662

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

2663

.format(duration))

2664

# End token found

2665

return value

2666

2667

2668

2062

def string_to_delta(interval):

2669

2063

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

2670

2064

2681

2075

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

2682

2076

datetime.timedelta(0, 330)

2683

2077

"""

2684

2685

try:

2686

return rfc3339_duration_to_delta(interval)

2687

except ValueError:

2688

pass

2689

2690

2078

timevalue = datetime.timedelta(0)

2691

2079

for s in interval.split():

2692

2080

try:

2693

suffix = s[-1]

2081

suffix = unicode(s[-1])

2694

2082

value = int(s[:-1])

2695

2083

if suffix == "d":

2696

2084

delta = datetime.timedelta(value)

2703

2091

elif suffix == "w":

2704

2092

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

2705

2093

else:

2706

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

2707

except IndexError as e:

2094

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

2095

.format(suffix))

2096

except (ValueError, IndexError) as e:

2708

2097

raise ValueError(*(e.args))

2709

2098

timevalue += delta

2710

2099

return timevalue

2726

2115

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

2727

2116

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

2728

2117

raise OSError(errno.ENODEV,

2729

"{} not a character device"

2118

"{0} not a character device"

2730

2119

.format(os.devnull))

2731

2120

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

2732

2121

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

2742

2131

2743

2132

parser = argparse.ArgumentParser()

2744

2133

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

2745

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

2134

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

2746

2135

help="show version number and exit")

2747

2136

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

2748

2137

help="Bind to interface IF")

2754

2143

help="Run self-test")

2755

2144

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

2756

2145

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

2757

" to terminal", default=None)

2146

" to terminal")

2758

2147

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

2759

2148

help="Debug level for stdout output")

2760

2149

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

2767

2156

" files")

2768

2157

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

2769

2158

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

2770

" system bus interface", default=None)

2159

" system bus interface")

2771

2160

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

2772

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

2773

default=None)

2161

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

2774

2162

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

2775

2163

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

2776

" state", default=None)

2777

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

2778

help="Specify a file descriptor to a network"

2779

" socket to use instead of creating one")

2164

" state")

2780

2165

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

2781

2166

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

2782

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

2783

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

2784

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

2785

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

2786

default=None)

2787

2167

2788

2168

options = parser.parse_args()

2789

2169

2790

2170

if options.check:

2791

2171

import doctest

2792

fail_count, test_count = doctest.testmod()

2793

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

2172

doctest.testmod()

2173

sys.exit()

2794

2174

2795

2175

# Default values for config file for server-global settings

2796

2176

server_defaults = { "interface": "",

2798

2178

"port": "",

2799

2179

"debug": "False",

2800

2180

"priority":

2801

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

2802

":+SIGN-DSA-SHA256",

2181

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

2803

2182

"servicename": "Mandos",

2804

2183

"use_dbus": "True",

2805

2184

"use_ipv6": "True",

2806

2185

"debuglevel": "",

2807

2186

"restore": "True",

2808

"socket": "",

2809

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

2810

"foreground": "False",

2811

"zeroconf": "True",

2812

}

2187

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

2188

}

2813

2189

2814

2190

# Parse config file for server-global settings

2815

2191

server_config = configparser.SafeConfigParser(server_defaults)

2816

2192

del server_defaults

2817

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

2193

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

2194

"mandos.conf"))

2818

2195

# Convert the SafeConfigParser object to a dict

2819

2196

server_settings = server_config.defaults()

2820

2197

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

2821

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

2198

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

2822

2199

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

2823

2200

option)

2824

2201

if server_settings["port"]:

2825

2202

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

2826

2203

"port")

2827

if server_settings["socket"]:

2828

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

2829

"socket")

2830

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

2831

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

2832

# happen with a supplied network socket.

2833

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

2834

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

2835

["socket"])

2836

2204

del server_config

2837

2205

2838

2206

# Override the settings from the config file with command line

2839

2207

# options, if set.

2840

2208

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

2841

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

2842

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

2843

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

2209

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

2210

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

2211

"statedir"):

2844

2212

value = getattr(options, option)

2845

2213

if value is not None:

2846

2214

server_settings[option] = value

2847

2215

del options

2848

2216

# Force all strings to be unicode

2849

2217

for option in server_settings.keys():

2850

if isinstance(server_settings[option], bytes):

2851

server_settings[option] = (server_settings[option]

2852

.decode("utf-8"))

2853

# Force all boolean options to be boolean

2854

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

2855

"foreground", "zeroconf"):

2856

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

2857

# Debug implies foreground

2858

if server_settings["debug"]:

2859

server_settings["foreground"] = True

2218

if type(server_settings[option]) is str:

2219

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

2860

2220

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

2861

2221

2862

2222

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

2863

2223

2864

if (not server_settings["zeroconf"]

2865

and not (server_settings["port"]

2866

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

2867

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

2868

2869

2224

# For convenience

2870

2225

debug = server_settings["debug"]

2871

2226

debuglevel = server_settings["debuglevel"]

2873

2228

use_ipv6 = server_settings["use_ipv6"]

2874

2229

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

2875

2230

stored_state_file)

2876

foreground = server_settings["foreground"]

2877

zeroconf = server_settings["zeroconf"]

2878

2231

2879

2232

if debug:

2880

2233

initlogger(debug, logging.DEBUG)

2886

2239

initlogger(debug, level)

2887

2240

2888

2241

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

2889

syslogger.setFormatter(

2890

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

2891

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

2892

server_settings["servicename"])))

2242

syslogger.setFormatter(logging.Formatter

2243

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

2244

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

2245

.format(server_settings

2246

["servicename"])))

2893

2247

2894

2248

# Parse config file with clients

2895

2249

client_config = configparser.SafeConfigParser(Client

2900

2254

global mandos_dbus_service

2901

2255

mandos_dbus_service = None

2902

2256

2903

socketfd = None

2904

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

2905

socketfd = server_settings["socket"]

2906

tcp_server = MandosServer(

2907

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

2908

ClientHandler,

2909

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

2910

use_ipv6=use_ipv6,

2911

gnutls_priority=server_settings["priority"],

2912

use_dbus=use_dbus,

2913

socketfd=socketfd)

2914

if not foreground:

2915

pidfilename = "/run/mandos.pid"

2916

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

2917

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

2918

pidfile = None

2257

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

2258

server_settings["port"]),

2259

ClientHandler,

2260

interface=(server_settings["interface"]

2261

or None),

2262

use_ipv6=use_ipv6,

2263

gnutls_priority=

2264

server_settings["priority"],

2265

use_dbus=use_dbus)

2266

if not debug:

2267

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

2919

2268

try:

2920

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

2269

pidfile = open(pidfilename, "w")

2921

2270

except IOError as e:

2922

2271

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

2923

2272

exc_info=e)

2924

2273

2925

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

2926

("mandos", "mandos"),

2927

("nobody", "nogroup")):

2274

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

2928

2275

try:

2929

2276

uid = pwd.getpwnam(name).pw_uid

2930

gid = pwd.getpwnam(group).pw_gid

2277

gid = pwd.getpwnam(name).pw_gid

2931

2278

break

2932

2279

except KeyError:

2933

2280

continue

2938

2285

os.setgid(gid)

2939

2286

os.setuid(uid)

2940

2287

except OSError as error:

2941

if error.errno != errno.EPERM:

2942

raise

2288

if error[0] != errno.EPERM:

2289

raise error

2943

2290

2944

2291

if debug:

2945

2292

# Enable all possible GnuTLS debugging

2946

2293

2947

2294

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

2948

2295

# - GnuTLS manual

2949

gnutls.global_set_log_level(11)

2296

gnutls.library.functions.gnutls_global_set_log_level(11)

2950

2297

2951

@gnutls.log_func

2298

@gnutls.library.types.gnutls_log_func

2952

2299

def debug_gnutls(level, string):

2953

2300

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

2954

2301

2955

gnutls.global_set_log_function(debug_gnutls)

2302

(gnutls.library.functions

2303

.gnutls_global_set_log_function(debug_gnutls))

2956

2304

2957

2305

# Redirect stdin so all checkers get /dev/null

2958

2306

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

2961

2309

os.close(null)

2962

2310

2963

2311

# Need to fork before connecting to D-Bus

2964

if not foreground:

2312

if not debug:

2965

2313

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

2966

2314

daemon()

2967

2315

2968

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

2969

# need to inform gobject that threads will be used.

2970

2316

gobject.threads_init()

2971

2317

2972

2318

global main_loop

2978

2324

if use_dbus:

2979

2325

try:

2980

2326

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

2981

bus,

2982

do_not_queue=True)

2983

old_bus_name = dbus.service.BusName(

2984

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

2985

do_not_queue=True)

2986

except dbus.exceptions.DBusException as e:

2327

bus, do_not_queue=True)

2328

old_bus_name = (dbus.service.BusName

2329

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

2330

do_not_queue=True))

2331

except dbus.exceptions.NameExistsException as e:

2987

2332

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

2988

2333

use_dbus = False

2989

2334

server_settings["use_dbus"] = False

2990

2335

tcp_server.use_dbus = False

2991

if zeroconf:

2992

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2993

service = AvahiServiceToSyslog(

2994

name = server_settings["servicename"],

2995

servicetype = "_mandos._tcp",

2996

protocol = protocol,

2997

bus = bus)

2998

if server_settings["interface"]:

2999

service.interface = if_nametoindex(

3000

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

2336

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2337

service = AvahiServiceToSyslog(name =

2338

server_settings["servicename"],

2339

servicetype = "_mandos._tcp",

2340

protocol = protocol, bus = bus)

2341

if server_settings["interface"]:

2342

service.interface = (if_nametoindex

2343

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

3001

2344

3002

2345

global multiprocessing_manager

3003

2346

multiprocessing_manager = multiprocessing.Manager()

3010

2353

old_client_settings = {}

3011

2354

clients_data = {}

3012

2355

3013

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

3014

global wnull

3015

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

3016

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

3017

# mode

3018

if debug or not foreground:

3019

wnull.close()

3020

3021

2356

# Get client data and settings from last running state.

3022

2357

if server_settings["restore"]:

3023

2358

try:

3024

2359

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

3025

clients_data, old_client_settings = pickle.load(

3026

stored_state)

2360

clients_data, old_client_settings = (pickle.load

2361

(stored_state))

3027

2362

os.remove(stored_state_path)

3028

2363

except IOError as e:

3029

2364

if e.errno == errno.ENOENT:

3030

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

3031

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

2365

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

2366

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

3032

2367

else:

3033

2368

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

3034

2369

exc_info=e)

3035

2370

raise

3036

2371

except EOFError as e:

3037

2372

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

3038

"EOFError:",

3039

exc_info=e)

2373

"EOFError:", exc_info=e)

3040

2374

3041

2375

with PGPEngine() as pgp:

3042

for client_name, client in clients_data.items():

3043

# Skip removed clients

3044

if client_name not in client_settings:

3045

continue

3046

2376

for client_name, client in clients_data.iteritems():

3047

2377

# Decide which value to use after restoring saved state.

3048

2378

# We have three different values: Old config file,

3049

2379

# new config file, and saved state.

3054

2384

# For each value in new config, check if it

3055

2385

# differs from the old config value (Except for

3056

2386

# the "secret" attribute)

3057

if (name != "secret"

3058

and (value !=

3059

old_client_settings[client_name][name])):

2387

if (name != "secret" and

2388

value != old_client_settings[client_name]

2389

[name]):

3060

2390

client[name] = value

3061

2391

except KeyError:

3062

2392

pass

3063

2393

3064

2394

# Clients who has passed its expire date can still be

3065

# enabled if its last checker was successful. A Client

2395

# enabled if its last checker was successful. Clients

3066

2396

# whose checker succeeded before we stored its state is

3067

2397

# assumed to have successfully run all checkers during

3068

2398

# downtime.

3070

2400

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

3071

2401

if not client["last_checked_ok"]:

3072

2402

logger.warning(

3073

"disabling client {} - Client never "

3074

"performed a successful checker".format(

3075

client_name))

2403

"disabling client {0} - Client never "

2404

"performed a successful checker"

2405

.format(client_name))

3076

2406

client["enabled"] = False

3077

2407

elif client["last_checker_status"] != 0:

3078

2408

logger.warning(

3079

"disabling client {} - Client last"

3080

" checker failed with error code"

3081

" {}".format(

3082

client_name,

3083

client["last_checker_status"]))

2409

"disabling client {0} - Client "

2410

"last checker failed with error code {1}"

2411

.format(client_name,

2412

client["last_checker_status"]))

3084

2413

client["enabled"] = False

3085

2414

else:

3086

client["expires"] = (

3087

datetime.datetime.utcnow()

3088

+ client["timeout"])

2415

client["expires"] = (datetime.datetime

2416

.utcnow()

2417

+ client["timeout"])

3089

2418

logger.debug("Last checker succeeded,"

3090

" keeping {} enabled".format(

3091

client_name))

2419

" keeping {0} enabled"

2420

.format(client_name))

3092

2421

try:

3093

client["secret"] = pgp.decrypt(

3094

client["encrypted_secret"],

3095

client_settings[client_name]["secret"])

2422

client["secret"] = (

2423

pgp.decrypt(client["encrypted_secret"],

2424

client_settings[client_name]

2425

["secret"]))

3096

2426

except PGPError:

3097

2427

# If decryption fails, we use secret from new settings

3098

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

3099

client_name))

3100

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

3101

["secret"])

2428

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

2429

.format(client_name))

2430

client["secret"] = (

2431

client_settings[client_name]["secret"])

3102

2432

3103

2433

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

3104

2434

for client_name in (set(old_client_settings)

3109

2439

clients_data[client_name] = client_settings[client_name]

3110

2440

3111

2441

# Create all client objects

3112

for client_name, client in clients_data.items():

2442

for client_name, client in clients_data.iteritems():

3113

2443

tcp_server.clients[client_name] = client_class(

3114

name = client_name,

3115

settings = client,

3116

server_settings = server_settings)

2444

name = client_name, settings = client)

3117

2445

3118

2446

if not tcp_server.clients:

3119

2447

logger.warning("No clients defined")

3120

2448

3121

if not foreground:

3122

if pidfile is not None:

3123

pid = os.getpid()

3124

try:

3125

with pidfile:

3126

print(pid, file=pidfile)

3127

except IOError:

3128

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

3129

pidfilename, pid)

3130

del pidfile

2449

if not debug:

2450

try:

2451

with pidfile:

2452

pid = os.getpid()

2453

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

2454

del pidfile

2455

except IOError:

2456

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

2457

pidfilename, pid)

2458

except NameError:

2459

# "pidfile" was never created

2460

pass

3131

2461

del pidfilename

2462

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

3132

2463

3133

2464

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

3134

2465

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

3135

2466

3136

2467

if use_dbus:

3137

3138

@alternate_dbus_interfaces(

3139

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

3140

class MandosDBusService(DBusObjectWithObjectManager):

2468

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

2469

"se.bsnet.fukt.Mandos"})

2470

class MandosDBusService(DBusObjectWithProperties):

3141

2471

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

3142

3143

2472

def __init__(self):

3144

2473

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

3145

3146

2474

_interface = "se.recompile.Mandos"

3147

2475

2476

@dbus_interface_annotations(_interface)

2477

def _foo(self):

2478

return { "org.freedesktop.DBus.Property"

2479

".EmitsChangedSignal":

2480

"false"}

2481

3148

2482

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

3149

2483

def ClientAdded(self, objpath):

3150

2484

"D-Bus signal"

3155

2489

"D-Bus signal"

3156

2490

pass

3157

2491

3158

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

3159

"true"})

3160

2492

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

3161

2493

def ClientRemoved(self, objpath, name):

3162

2494

"D-Bus signal"

3163

2495

pass

3164

2496

3165

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

3166

"true"})

3167

2497

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

3168

2498

def GetAllClients(self):

3169

2499

"D-Bus method"

3170

return dbus.Array(c.dbus_object_path for c in

2500

return dbus.Array(c.dbus_object_path

2501

for c in

3171

2502

tcp_server.clients.itervalues())

3172

2503

3173

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

3174

"true"})

3175

2504

@dbus.service.method(_interface,

3176

2505

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

3177

2506

def GetAllClientsWithProperties(self):

3178

2507

"D-Bus method"

3179

2508

return dbus.Dictionary(

3180

{ c.dbus_object_path: c.GetAll(

3181

"se.recompile.Mandos.Client")

3182

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

2509

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

2510

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

3183

2511

signature="oa{sv}")

3184

2512

3185

2513

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

3189

2517

if c.dbus_object_path == object_path:

3190

2518

del tcp_server.clients[c.name]

3191

2519

c.remove_from_connection()

3192

# Don't signal the disabling

2520

# Don't signal anything except ClientRemoved

3193

2521

c.disable(quiet=True)

3194

# Emit D-Bus signal for removal

3195

self.client_removed_signal(c)

2522

# Emit D-Bus signal

2523

self.ClientRemoved(object_path, c.name)

3196

2524

return

3197

2525

raise KeyError(object_path)

3198

2526

3199

2527

del _interface

3200

3201

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

3202

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

3203

def GetManagedObjects(self):

3204

"""D-Bus method"""

3205

return dbus.Dictionary(

3206

{ client.dbus_object_path:

3207

dbus.Dictionary(

3208

{ interface: client.GetAll(interface)

3209

for interface in

3210

client._get_all_interface_names()})

3211

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

3212

3213

def client_added_signal(self, client):

3214

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

3215

if use_dbus:

3216

# New standard signal

3217

self.InterfacesAdded(

3218

client.dbus_object_path,

3219

dbus.Dictionary(

3220

{ interface: client.GetAll(interface)

3221

for interface in

3222

client._get_all_interface_names()}))

3223

# Old signal

3224

self.ClientAdded(client.dbus_object_path)

3225

3226

def client_removed_signal(self, client):

3227

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

3228

if use_dbus:

3229

# New standard signal

3230

self.InterfacesRemoved(

3231

client.dbus_object_path,

3232

client._get_all_interface_names())

3233

# Old signal

3234

self.ClientRemoved(client.dbus_object_path,

3235

client.name)

3236

2528

3237

2529

mandos_dbus_service = MandosDBusService()

3238

2530

3239

2531

def cleanup():

3240

2532

"Cleanup function; run on exit"

3241

if zeroconf:

3242

service.cleanup()

2533

service.cleanup()

3243

2534

3244

2535

multiprocessing.active_children()

3245

wnull.close()

3246

2536

if not (tcp_server.clients or client_settings):

3247

2537

return

3248

2538

3259

2549

3260

2550

# A list of attributes that can not be pickled

3261

2551

# + secret.

3262

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

3263

"checker", "server_settings" }

3264

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

3265

.Object):

2552

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

2553

"checker"))

2554

for name, typ in (inspect.getmembers

2555

(dbus.service.Object)):

3266

2556

exclude.add(name)

3267

2557

3268

2558

client_dict["encrypted_secret"] = (client

3275

2565

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

3276

2566

3277

2567

try:

3278

with tempfile.NamedTemporaryFile(

3279

mode='wb',

3280

suffix=".pickle",

3281

prefix='clients-',

3282

dir=os.path.dirname(stored_state_path),

3283

delete=False) as stored_state:

2568

with (tempfile.NamedTemporaryFile

2569

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

2570

dir=os.path.dirname(stored_state_path),

2571

delete=False)) as stored_state:

3284

2572

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

3285

tempname = stored_state.name

2573

tempname=stored_state.name

3286

2574

os.rename(tempname, stored_state_path)

3287

2575

except (IOError, OSError) as e:

3288

2576

if not debug:

3291

2579

except NameError:

3292

2580

pass

3293

2581

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

3294

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

2582

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

3295

2583

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

3296

2584

else:

3297

2585

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

3298

2586

exc_info=e)

3299

raise

2587

raise e

3300

2588

3301

2589

# Delete all clients, and settings from config

3302

2590

while tcp_server.clients:

3303

2591

name, client = tcp_server.clients.popitem()

3304

2592

if use_dbus:

3305

2593

client.remove_from_connection()

3306

# Don't signal the disabling

2594

# Don't signal anything except ClientRemoved

3307

2595

client.disable(quiet=True)

3308

# Emit D-Bus signal for removal

3309

2596

if use_dbus:

3310

mandos_dbus_service.client_removed_signal(client)

2597

# Emit D-Bus signal

2598

mandos_dbus_service.ClientRemoved(client

2599

.dbus_object_path,

2600

client.name)

3311

2601

client_settings.clear()

3312

2602

3313

2603

atexit.register(cleanup)

3314

2604

3315

2605

for client in tcp_server.clients.itervalues():

3316

2606

if use_dbus:

3317

# Emit D-Bus signal for adding

3318

mandos_dbus_service.client_added_signal(client)

2607

# Emit D-Bus signal

2608

mandos_dbus_service.ClientAdded(client.dbus_object_path)

3319

2609

# Need to initiate checking of clients

3320

2610

if client.enabled:

3321

2611

client.init_checker()

3324

2614

tcp_server.server_activate()

3325

2615

3326

2616

# Find out what port we got

3327

if zeroconf:

3328

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

2617

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

3329

2618

if use_ipv6:

3330

2619

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

3331

2620

" flowinfo %d, scope_id %d",

3337

2626

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

3338

2627

3339

2628

try:

3340

if zeroconf:

3341

# From the Avahi example code

3342

try:

3343

service.activate()

3344

except dbus.exceptions.DBusException as error:

3345

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

3346

cleanup()

3347

sys.exit(1)

3348

# End of Avahi example code

2629

# From the Avahi example code

2630

try:

2631

service.activate()

2632

except dbus.exceptions.DBusException as error:

2633

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

2634

cleanup()

2635

sys.exit(1)

2636

# End of Avahi example code

3349

2637

3350

2638

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

3351

2639

lambda *args, **kwargs:

3366

2654

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

3367

2655

cleanup()

3368

2656

3369

3370

2657

if __name__ == '__main__':

3371

2658

main()