/mandos/release : revision 237.7.333

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#!/usr/bin/python3 -b

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# -*- mode: python; after-save-hook: (lambda () (let ((command (if (fboundp 'file-local-name) (file-local-name (buffer-file-name)) (or (file-remote-p (buffer-file-name) 'localname) (buffer-file-name))))) (if (= (progn (if (get-buffer "*Test*") (kill-buffer "*Test*")) (process-file-shell-command (format "%s --check" (shell-quote-argument command)) nil "*Test*")) 0) (let ((w (get-buffer-window "*Test*"))) (if w (delete-window w))) (progn (with-current-buffer "*Test*" (compilation-mode)) (display-buffer "*Test*" '(display-buffer-in-side-window)))))); coding: utf-8 -*-

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#

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#!/usr/bin/python2.7

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# -*- mode: python; coding: utf-8 -*-

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#

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# Mandos server - give out binary blobs to connecting clients.

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#

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#

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# This program is partly derived from an example program for an Avahi

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# service publisher, downloaded from

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# <http://avahi.org/wiki/PythonPublishExample>. This includes the

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# methods "add", "remove", "server_state_changed",

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# "entry_group_state_changed", "cleanup", and "activate" in the

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# "AvahiService" class, and some lines in "main".

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#

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#

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# Everything else is

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#

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# This file is part of Mandos.

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#

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

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

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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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# the Free Software Foundation, either version 3 of the License, or

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# (at your option) any later version.

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#

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# Mandos is distributed in the hope that it will be useful, but

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# WITHOUT ANY WARRANTY; without even the implied warranty of

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# This program is distributed in the hope that it will be useful,

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# but WITHOUT ANY WARRANTY; without even the implied warranty of

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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

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# GNU General Public License for more details.

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#

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#

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# You should have received a copy of the GNU General Public License

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# along with Mandos. If not, see <http://www.gnu.org/licenses/>.

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#

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# along with this program. If not, see

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# <http://www.gnu.org/licenses/>.

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#

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# Contact the authors at <mandos@recompile.se>.

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#

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#

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from __future__ import (division, absolute_import, print_function,

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unicode_literals)

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try:

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from future_builtins import *

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except ImportError:

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pass

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from future_builtins import *

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38

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try:

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40

import SocketServer as socketserver

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44

import argparse

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import datetime

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46

import errno

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import gnutls.crypto

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import gnutls.connection

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import gnutls.errors

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import gnutls.library.functions

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import gnutls.library.constants

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import gnutls.library.types

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53

try:

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import ConfigParser as configparser

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55

except ImportError:

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import itertools

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import collections

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import codecs

80

import unittest

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import dbus

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import dbus.service

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import gi

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from gi.repository import GLib

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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 avahi

86

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from dbus.mainloop.glib import DBusGMainLoop

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91

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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95

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if sys.version_info.major == 2:

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__metaclass__ = type

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# Show warnings by default

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if not sys.warnoptions:

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import warnings

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warnings.simplefilter("default")

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100

# Try to find the value of SO_BINDTODEVICE:

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try:

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# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and

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# newer, and it is also the most natural place for it:

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SO_BINDTODEVICE = socket.SO_BINDTODEVICE

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98

except AttributeError:

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99

try:

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# This is where SO_BINDTODEVICE was up to and including Python

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# 2.6, and also 3.2:

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from IN import SO_BINDTODEVICE

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except ImportError:

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# In Python 2.7 it seems to have been removed entirely.

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# Try running the C preprocessor:

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try:

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cc = subprocess.Popen(["cc", "--language=c", "-E",

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"/dev/stdin"],

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stdin=subprocess.PIPE,

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stdout=subprocess.PIPE)

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stdout = cc.communicate(

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"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]

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SO_BINDTODEVICE = int(stdout.splitlines()[-1])

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except (OSError, ValueError, IndexError):

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# No value found

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SO_BINDTODEVICE = None

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SO_BINDTODEVICE = None

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if sys.version_info.major == 2:

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str = unicode

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if sys.version_info < (3, 2):

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configparser.Configparser = configparser.SafeConfigParser

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version = "1.8.8"

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version = "1.6.9"

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stored_state_file = "clients.pickle"

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logger = logging.getLogger()

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logging.captureWarnings(True) # Show warnings via the logging system

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syslogger = None

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try:

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if_nametoindex = ctypes.cdll.LoadLibrary(

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

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def copy_function(func):

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

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if sys.version_info.major == 2:

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return types.FunctionType(func.func_code,

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func.func_globals,

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func.func_name,

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func.func_defaults,

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func.func_closure)

161

else:

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return types.FunctionType(func.__code__,

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func.__globals__,

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func.__name__,

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func.__defaults__,

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func.__closure__)

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168

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128

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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facility = logging.handlers.SysLogHandler.LOG_DAEMON,

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address = "/dev/log"))

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syslogger.setFormatter(logging.Formatter

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

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' %(message)s'))

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logger.addHandler(syslogger)

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if debug:

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console = logging.StreamHandler()

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

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pass

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153

195

154

196

class PGPEngine:

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class PGPEngine(object):

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

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157

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def __init__(self):

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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(b":")

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if name == "gpg":

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self.gpg = path

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break

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except OSError as e:

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if e.errno != errno.ENOENT:

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raise

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160

self.gnupgargs = ['--batch',

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'--homedir', self.tempdir,

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'--home', self.tempdir,

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'--force-mdc',

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'--quiet']

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# Only GPG version 1 has the --no-use-agent option.

217

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

218

self.gnupgargs.append("--no-use-agent")

219

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'--quiet',

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'--no-use-agent']

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220

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def __enter__(self):

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167

return self

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168

223

169

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

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170

self._cleanup()

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return False

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227

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def __del__(self):

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self._cleanup()

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175

230

176

def _cleanup(self):

231

177

if self.tempdir is not None:

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# Delete contents of tempdir

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for root, dirs, files in os.walk(self.tempdir,

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topdown=False):

180

topdown = False):

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for filename in files:

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os.remove(os.path.join(root, filename))

237

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for dirname in dirs:

239

185

# Remove tempdir

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os.rmdir(self.tempdir)

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187

self.tempdir = None

242

188

243

189

def password_encode(self, password):

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

245

191

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

250

196

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

251

197

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

252

198

return encoded

253

199

254

200

def encrypt(self, data, password):

255

201

passphrase = self.password_encode(password)

256

202

with tempfile.NamedTemporaryFile(

257

203

dir=self.tempdir) as passfile:

258

204

passfile.write(passphrase)

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205

passfile.flush()

260

proc = subprocess.Popen([self.gpg, '--symmetric',

206

proc = subprocess.Popen(['gpg', '--symmetric',

261

207

'--passphrase-file',

262

208

passfile.name]

263

209

+ self.gnupgargs,

264

stdin=subprocess.PIPE,

265

stdout=subprocess.PIPE,

266

stderr=subprocess.PIPE)

267

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

210

stdin = subprocess.PIPE,

211

stdout = subprocess.PIPE,

212

stderr = subprocess.PIPE)

213

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

268

214

if proc.returncode != 0:

269

215

raise PGPError(err)

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216

return ciphertext

271

217

272

218

def decrypt(self, data, password):

273

219

passphrase = self.password_encode(password)

274

220

with tempfile.NamedTemporaryFile(

275

dir=self.tempdir) as passfile:

221

dir = self.tempdir) as passfile:

276

222

passfile.write(passphrase)

277

223

passfile.flush()

278

proc = subprocess.Popen([self.gpg, '--decrypt',

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proc = subprocess.Popen(['gpg', '--decrypt',

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225

'--passphrase-file',

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226

passfile.name]

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227

+ self.gnupgargs,

282

stdin=subprocess.PIPE,

283

stdout=subprocess.PIPE,

284

stderr=subprocess.PIPE)

285

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

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stdin = subprocess.PIPE,

229

stdout = subprocess.PIPE,

230

stderr = subprocess.PIPE)

231

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

286

232

if proc.returncode != 0:

287

233

raise PGPError(err)

288

234

return decrypted_plaintext

289

235

290

236

291

# Pretend that we have an Avahi module

292

class avahi:

293

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

294

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

295

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

296

PROTO_INET = 0 # avahi-common/address.h

297

PROTO_INET6 = 1 # avahi-common/address.h

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DBUS_NAME = "org.freedesktop.Avahi"

299

DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"

300

DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"

301

DBUS_PATH_SERVER = "/"

302

303

@staticmethod

304

def string_array_to_txt_array(t):

305

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

306

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

307

ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h

308

ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h

309

ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h

310

SERVER_INVALID = 0 # avahi-common/defs.h

311

SERVER_REGISTERING = 1 # avahi-common/defs.h

312

SERVER_RUNNING = 2 # avahi-common/defs.h

313

SERVER_COLLISION = 3 # avahi-common/defs.h

314

SERVER_FAILURE = 4 # avahi-common/defs.h

315

316

317

237

class AvahiError(Exception):

318

238

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

319

239

self.value = value

329

249

pass

330

250

331

251

332

class AvahiService:

252

class AvahiService(object):

333

253

"""An Avahi (Zeroconf) service.

334

254

335

255

Attributes:

336

256

interface: integer; avahi.IF_UNSPEC or an interface index.

337

257

Used to optionally bind to the specified interface.

349

269

server: D-Bus Server

350

270

bus: dbus.SystemBus()

351

271

"""

352

272

353

273

def __init__(self,

354

interface=avahi.IF_UNSPEC,

355

name=None,

356

servicetype=None,

357

port=None,

358

TXT=None,

359

domain="",

360

host="",

361

max_renames=32768,

362

protocol=avahi.PROTO_UNSPEC,

363

bus=None):

274

interface = avahi.IF_UNSPEC,

275

name = None,

276

servicetype = None,

277

port = None,

278

TXT = None,

279

domain = "",

280

host = "",

281

max_renames = 32768,

282

protocol = avahi.PROTO_UNSPEC,

283

bus = None):

364

284

self.interface = interface

365

285

self.name = name

366

286

self.type = servicetype

375

295

self.server = None

376

296

self.bus = bus

377

297

self.entry_group_state_changed_match = None

378

298

379

299

def rename(self, remove=True):

380

300

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

381

301

if self.rename_count >= self.max_renames:

401

321

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

402

322

self.cleanup()

403

323

os._exit(1)

404

324

405

325

def remove(self):

406

326

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

407

327

if self.entry_group_state_changed_match is not None:

409

329

self.entry_group_state_changed_match = None

410

330

if self.group is not None:

411

331

self.group.Reset()

412

332

413

333

def add(self):

414

334

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

415

335

self.remove()

432

352

dbus.UInt16(self.port),

433

353

avahi.string_array_to_txt_array(self.TXT))

434

354

self.group.Commit()

435

355

436

356

def entry_group_state_changed(self, state, error):

437

357

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

438

358

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

439

359

440

360

if state == avahi.ENTRY_GROUP_ESTABLISHED:

441

361

logger.debug("Zeroconf service established.")

442

362

elif state == avahi.ENTRY_GROUP_COLLISION:

446

366

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

447

367

str(error))

448

368

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

449

369

450

370

def cleanup(self):

451

371

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

452

372

if self.group is not None:

457

377

pass

458

378

self.group = None

459

379

self.remove()

460

380

461

381

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

462

382

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

463

383

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

492

412

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

493

413

else:

494

414

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

495

415

496

416

def activate(self):

497

417

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

498

418

if self.server is None:

509

429

class AvahiServiceToSyslog(AvahiService):

510

430

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

511

431

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

512

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

432

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

513

433

syslogger.setFormatter(logging.Formatter(

514

434

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

515

435

.format(self.name)))

516

436

return ret

517

437

518

519

# Pretend that we have a GnuTLS module

520

class gnutls:

521

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

522

523

library = ctypes.util.find_library("gnutls")

524

if library is None:

525

library = ctypes.util.find_library("gnutls-deb0")

526

_library = ctypes.cdll.LoadLibrary(library)

527

del library

528

529

# Unless otherwise indicated, the constants and types below are

530

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

531

532

# Constants

533

E_SUCCESS = 0

534

E_INTERRUPTED = -52

535

E_AGAIN = -28

536

CRT_OPENPGP = 2

537

CRT_RAWPK = 3

538

CLIENT = 2

539

SHUT_RDWR = 0

540

CRD_CERTIFICATE = 1

541

E_NO_CERTIFICATE_FOUND = -49

542

X509_FMT_DER = 0

543

NO_TICKETS = 1<<10

544

ENABLE_RAWPK = 1<<18

545

CTYPE_PEERS = 3

546

KEYID_USE_SHA256 = 1 # gnutls/x509.h

547

OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h

548

549

# Types

550

class session_int(ctypes.Structure):

551

_fields_ = []

552

session_t = ctypes.POINTER(session_int)

553

554

class certificate_credentials_st(ctypes.Structure):

555

_fields_ = []

556

certificate_credentials_t = ctypes.POINTER(

557

certificate_credentials_st)

558

certificate_type_t = ctypes.c_int

559

560

class datum_t(ctypes.Structure):

561

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

562

('size', ctypes.c_uint)]

563

564

class openpgp_crt_int(ctypes.Structure):

565

_fields_ = []

566

openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)

567

openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h

568

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

569

credentials_type_t = ctypes.c_int

570

transport_ptr_t = ctypes.c_void_p

571

close_request_t = ctypes.c_int

572

573

# Exceptions

574

class Error(Exception):

575

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

576

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

577

# code is passed, convert it to a string with

578

# gnutls.strerror()

579

self.code = code

580

if message is None and code is not None:

581

message = gnutls.strerror(code)

582

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

583

message, *args)

584

585

class CertificateSecurityError(Error):

586

pass

587

588

# Classes

589

class Credentials:

590

def __init__(self):

591

self._c_object = gnutls.certificate_credentials_t()

592

gnutls.certificate_allocate_credentials(

593

ctypes.byref(self._c_object))

594

self.type = gnutls.CRD_CERTIFICATE

595

596

def __del__(self):

597

gnutls.certificate_free_credentials(self._c_object)

598

599

class ClientSession:

600

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

601

self._c_object = gnutls.session_t()

602

gnutls_flags = gnutls.CLIENT

603

if gnutls.check_version(b"3.5.6"):

604

gnutls_flags |= gnutls.NO_TICKETS

605

if gnutls.has_rawpk:

606

gnutls_flags |= gnutls.ENABLE_RAWPK

607

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

608

del gnutls_flags

609

gnutls.set_default_priority(self._c_object)

610

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

611

gnutls.handshake_set_private_extensions(self._c_object,

612

True)

613

self.socket = socket

614

if credentials is None:

615

credentials = gnutls.Credentials()

616

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

617

ctypes.cast(credentials._c_object,

618

ctypes.c_void_p))

619

self.credentials = credentials

620

621

def __del__(self):

622

gnutls.deinit(self._c_object)

623

624

def handshake(self):

625

return gnutls.handshake(self._c_object)

626

627

def send(self, data):

628

data = bytes(data)

629

data_len = len(data)

630

while data_len > 0:

631

data_len -= gnutls.record_send(self._c_object,

632

data[-data_len:],

633

data_len)

634

635

def bye(self):

636

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

637

638

# Error handling functions

639

def _error_code(result):

640

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

641

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

642

if result >= 0:

643

return result

644

if result == gnutls.E_NO_CERTIFICATE_FOUND:

645

raise gnutls.CertificateSecurityError(code=result)

646

raise gnutls.Error(code=result)

647

648

def _retry_on_error(result, func, arguments):

649

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

650

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

651

while result < 0:

652

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

653

return _error_code(result)

654

result = func(*arguments)

655

return result

656

657

# Unless otherwise indicated, the function declarations below are

658

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

659

660

# Functions

661

priority_set_direct = _library.gnutls_priority_set_direct

662

priority_set_direct.argtypes = [session_t, ctypes.c_char_p,

663

ctypes.POINTER(ctypes.c_char_p)]

664

priority_set_direct.restype = _error_code

665

666

init = _library.gnutls_init

667

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

668

init.restype = _error_code

669

670

set_default_priority = _library.gnutls_set_default_priority

671

set_default_priority.argtypes = [session_t]

672

set_default_priority.restype = _error_code

673

674

record_send = _library.gnutls_record_send

675

record_send.argtypes = [session_t, ctypes.c_void_p,

676

ctypes.c_size_t]

677

record_send.restype = ctypes.c_ssize_t

678

record_send.errcheck = _retry_on_error

679

680

certificate_allocate_credentials = (

681

_library.gnutls_certificate_allocate_credentials)

682

certificate_allocate_credentials.argtypes = [

683

ctypes.POINTER(certificate_credentials_t)]

684

certificate_allocate_credentials.restype = _error_code

685

686

certificate_free_credentials = (

687

_library.gnutls_certificate_free_credentials)

688

certificate_free_credentials.argtypes = [

689

certificate_credentials_t]

690

certificate_free_credentials.restype = None

691

692

handshake_set_private_extensions = (

693

_library.gnutls_handshake_set_private_extensions)

694

handshake_set_private_extensions.argtypes = [session_t,

695

ctypes.c_int]

696

handshake_set_private_extensions.restype = None

697

698

credentials_set = _library.gnutls_credentials_set

699

credentials_set.argtypes = [session_t, credentials_type_t,

700

ctypes.c_void_p]

701

credentials_set.restype = _error_code

702

703

strerror = _library.gnutls_strerror

704

strerror.argtypes = [ctypes.c_int]

705

strerror.restype = ctypes.c_char_p

706

707

certificate_type_get = _library.gnutls_certificate_type_get

708

certificate_type_get.argtypes = [session_t]

709

certificate_type_get.restype = _error_code

710

711

certificate_get_peers = _library.gnutls_certificate_get_peers

712

certificate_get_peers.argtypes = [session_t,

713

ctypes.POINTER(ctypes.c_uint)]

714

certificate_get_peers.restype = ctypes.POINTER(datum_t)

715

716

global_set_log_level = _library.gnutls_global_set_log_level

717

global_set_log_level.argtypes = [ctypes.c_int]

718

global_set_log_level.restype = None

719

720

global_set_log_function = _library.gnutls_global_set_log_function

721

global_set_log_function.argtypes = [log_func]

722

global_set_log_function.restype = None

723

724

deinit = _library.gnutls_deinit

725

deinit.argtypes = [session_t]

726

deinit.restype = None

727

728

handshake = _library.gnutls_handshake

729

handshake.argtypes = [session_t]

730

handshake.restype = _error_code

731

handshake.errcheck = _retry_on_error

732

733

transport_set_ptr = _library.gnutls_transport_set_ptr

734

transport_set_ptr.argtypes = [session_t, transport_ptr_t]

735

transport_set_ptr.restype = None

736

737

bye = _library.gnutls_bye

738

bye.argtypes = [session_t, close_request_t]

739

bye.restype = _error_code

740

bye.errcheck = _retry_on_error

741

742

check_version = _library.gnutls_check_version

743

check_version.argtypes = [ctypes.c_char_p]

744

check_version.restype = ctypes.c_char_p

745

746

_need_version = b"3.3.0"

747

if check_version(_need_version) is None:

748

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

749

.format(_need_version))

750

751

_tls_rawpk_version = b"3.6.6"

752

has_rawpk = bool(check_version(_tls_rawpk_version))

753

754

if has_rawpk:

755

# Types

756

class pubkey_st(ctypes.Structure):

757

_fields = []

758

pubkey_t = ctypes.POINTER(pubkey_st)

759

760

x509_crt_fmt_t = ctypes.c_int

761

762

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

763

pubkey_init = _library.gnutls_pubkey_init

764

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

765

pubkey_init.restype = _error_code

766

767

pubkey_import = _library.gnutls_pubkey_import

768

pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),

769

x509_crt_fmt_t]

770

pubkey_import.restype = _error_code

771

772

pubkey_get_key_id = _library.gnutls_pubkey_get_key_id

773

pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,

774

ctypes.POINTER(ctypes.c_ubyte),

775

ctypes.POINTER(ctypes.c_size_t)]

776

pubkey_get_key_id.restype = _error_code

777

778

pubkey_deinit = _library.gnutls_pubkey_deinit

779

pubkey_deinit.argtypes = [pubkey_t]

780

pubkey_deinit.restype = None

781

else:

782

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

783

784

openpgp_crt_init = _library.gnutls_openpgp_crt_init

785

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

786

openpgp_crt_init.restype = _error_code

787

788

openpgp_crt_import = _library.gnutls_openpgp_crt_import

789

openpgp_crt_import.argtypes = [openpgp_crt_t,

790

ctypes.POINTER(datum_t),

791

openpgp_crt_fmt_t]

792

openpgp_crt_import.restype = _error_code

793

794

openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self

795

openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,

796

ctypes.POINTER(ctypes.c_uint)]

797

openpgp_crt_verify_self.restype = _error_code

798

799

openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit

800

openpgp_crt_deinit.argtypes = [openpgp_crt_t]

801

openpgp_crt_deinit.restype = None

802

803

openpgp_crt_get_fingerprint = (

804

_library.gnutls_openpgp_crt_get_fingerprint)

805

openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,

806

ctypes.c_void_p,

807

ctypes.POINTER(

808

ctypes.c_size_t)]

809

openpgp_crt_get_fingerprint.restype = _error_code

810

811

if check_version(b"3.6.4"):

812

certificate_type_get2 = _library.gnutls_certificate_type_get2

813

certificate_type_get2.argtypes = [session_t, ctypes.c_int]

814

certificate_type_get2.restype = _error_code

815

816

# Remove non-public functions

817

del _error_code, _retry_on_error

818

819

820

438

def call_pipe(connection, # : multiprocessing.Connection

821

439

func, *args, **kwargs):

822

440

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

823

441

824

442

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

825

443

return value on the provided multiprocessing.Connection.

826

444

"""

827

445

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

828

446

connection.close()

829

447

830

831

class Client:

448

class Client(object):

832

449

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

833

450

834

451

Attributes:

835

452

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

836

453

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

837

454

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

838

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

839

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

840

running.

841

checker_callback_tag: a GLib event source tag, or None

455

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

456

to see if the client lives.

457

'None' if no process is running.

458

checker_callback_tag: a gobject event source tag, or None

842

459

checker_command: string; External command which is run to check

843

460

if client lives. %() expansions are done at

844

461

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

845

462

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

846

checker_initiator_tag: a GLib event source tag, or None

463

checker_initiator_tag: a gobject event source tag, or None

847

464

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

848

465

client_structure: Object describing what attributes a client has

849

466

and is used for storing the client at exit

850

467

current_checker_command: string; current running checker_command

851

disable_initiator_tag: a GLib event source tag, or None

468

disable_initiator_tag: a gobject event source tag, or None

852

469

enabled: bool()

853

470

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

854

uniquely identify an OpenPGP client

855

key_id: string (64 hexadecimal digits); used to uniquely identify

856

a client using raw public keys

471

uniquely identify the client

857

472

host: string; available for use by the checker command

858

473

interval: datetime.timedelta(); How often to start a new checker

859

474

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

875

490

disabled, or None

876

491

server_settings: The server_settings dict from main()

877

492

"""

878

493

879

494

runtime_expansions = ("approval_delay", "approval_duration",

880

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

495

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

881

496

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

882

497

"last_approval_request", "last_checked_ok",

883

498

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

892

507

"approved_by_default": "True",

893

508

"enabled": "True",

894

509

}

895

510

896

511

@staticmethod

897

512

def config_parser(config):

898

513

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

905

520

for client_name in config.sections():

906

521

section = dict(config.items(client_name))

907

522

client = settings[client_name] = {}

908

523

909

524

client["host"] = section["host"]

910

525

# Reformat values from string types to Python types

911

526

client["approved_by_default"] = config.getboolean(

912

527

client_name, "approved_by_default")

913

528

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

914

529

"enabled")

915

916

# Uppercase and remove spaces from key_id and fingerprint

917

# for later comparison purposes with return value from the

918

# key_id() and fingerprint() functions

919

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

920

.replace(" ", ""))

530

531

# Uppercase and remove spaces from fingerprint for later

532

# comparison purposes with return value from the

533

# fingerprint() function

921

534

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

922

535

.replace(" ", ""))

923

536

if "secret" in section:

924

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

925

.encode("utf-8"),

926

"base64")

537

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

927

538

elif "secfile" in section:

928

539

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

929

540

(section["secfile"])),

944

555

client["last_approval_request"] = None

945

556

client["last_checked_ok"] = None

946

557

client["last_checker_status"] = -2

947

558

948

559

return settings

949

950

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

560

561

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

951

562

self.name = name

952

563

if server_settings is None:

953

564

server_settings = {}

955

566

# adding all client settings

956

567

for setting, value in settings.items():

957

568

setattr(self, setting, value)

958

569

959

570

if self.enabled:

960

571

if not hasattr(self, "last_enabled"):

961

572

self.last_enabled = datetime.datetime.utcnow()

965

576

else:

966

577

self.last_enabled = None

967

578

self.expires = None

968

579

969

580

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

970

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

971

581

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

972

582

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

973

583

datetime.datetime.utcnow())

974

584

975

585

# attributes specific for this server instance

976

586

self.checker = None

977

587

self.checker_initiator_tag = None

983

593

self.changedstate = multiprocessing_manager.Condition(

984

594

multiprocessing_manager.Lock())

985

595

self.client_structure = [attr

986

for attr in self.__dict__.keys()

596

for attr in self.__dict__.iterkeys()

987

597

if not attr.startswith("_")]

988

598

self.client_structure.append("client_structure")

989

599

990

600

for name, t in inspect.getmembers(

991

601

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

992

602

if not name.startswith("_"):

993

603

self.client_structure.append(name)

994

604

995

605

# Send notice to process children that client state has changed

996

606

def send_changedstate(self):

997

607

with self.changedstate:

998

608

self.changedstate.notify_all()

999

609

1000

610

def enable(self):

1001

611

"""Start this client's checker and timeout hooks"""

1002

612

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

1007

617

self.last_enabled = datetime.datetime.utcnow()

1008

618

self.init_checker()

1009

619

self.send_changedstate()

1010

620

1011

621

def disable(self, quiet=True):

1012

622

"""Disable this client."""

1013

623

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

1015

625

if not quiet:

1016

626

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

1017

627

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

1018

GLib.source_remove(self.disable_initiator_tag)

628

gobject.source_remove(self.disable_initiator_tag)

1019

629

self.disable_initiator_tag = None

1020

630

self.expires = None

1021

631

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

1022

GLib.source_remove(self.checker_initiator_tag)

632

gobject.source_remove(self.checker_initiator_tag)

1023

633

self.checker_initiator_tag = None

1024

634

self.stop_checker()

1025

635

self.enabled = False

1026

636

if not quiet:

1027

637

self.send_changedstate()

1028

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

638

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

1029

639

return False

1030

640

1031

641

def __del__(self):

1032

642

self.disable()

1033

643

1034

644

def init_checker(self):

1035

645

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

1036

646

# and every interval from then on.

1037

647

if self.checker_initiator_tag is not None:

1038

GLib.source_remove(self.checker_initiator_tag)

1039

self.checker_initiator_tag = GLib.timeout_add(

648

gobject.source_remove(self.checker_initiator_tag)

649

self.checker_initiator_tag = gobject.timeout_add(

1040

650

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

1041

651

self.start_checker)

1042

652

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

1043

653

if self.disable_initiator_tag is not None:

1044

GLib.source_remove(self.disable_initiator_tag)

1045

self.disable_initiator_tag = GLib.timeout_add(

654

gobject.source_remove(self.disable_initiator_tag)

655

self.disable_initiator_tag = gobject.timeout_add(

1046

656

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

1047

657

# Also start a new checker *right now*.

1048

658

self.start_checker()

1049

659

1050

660

def checker_callback(self, source, condition, connection,

1051

661

command):

1052

662

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

663

self.checker_callback_tag = None

664

self.checker = None

1053

665

# Read return code from connection (see call_pipe)

1054

666

returncode = connection.recv()

1055

667

connection.close()

1056

self.checker.join()

1057

self.checker_callback_tag = None

1058

self.checker = None

1059

668

1060

669

if returncode >= 0:

1061

670

self.last_checker_status = returncode

1062

671

self.last_checker_signal = None

1072

681

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

1073

682

vars(self))

1074

683

return False

1075

684

1076

685

def checked_ok(self):

1077

686

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

1078

687

self.last_checked_ok = datetime.datetime.utcnow()

1079

688

self.last_checker_status = 0

1080

689

self.last_checker_signal = None

1081

690

self.bump_timeout()

1082

691

1083

692

def bump_timeout(self, timeout=None):

1084

693

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

1085

694

if timeout is None:

1086

695

timeout = self.timeout

1087

696

if self.disable_initiator_tag is not None:

1088

GLib.source_remove(self.disable_initiator_tag)

697

gobject.source_remove(self.disable_initiator_tag)

1089

698

self.disable_initiator_tag = None

1090

699

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

1091

self.disable_initiator_tag = GLib.timeout_add(

700

self.disable_initiator_tag = gobject.timeout_add(

1092

701

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

1093

702

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

1094

703

1095

704

def need_approval(self):

1096

705

self.last_approval_request = datetime.datetime.utcnow()

1097

706

1098

707

def start_checker(self):

1099

708

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

1100

709

1101

710

If a checker already exists, leave it running and do

1102

711

nothing."""

1103

712

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

1108

717

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

1109

718

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

1110

719

# should be.

1111

720

1112

721

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

1113

722

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

1114

723

self.checker.join()

1118

727

# Escape attributes for the shell

1119

728

escaped_attrs = {

1120

729

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

1121

for attr in self.runtime_expansions}

730

for attr in self.runtime_expansions }

1122

731

try:

1123

732

command = self.checker_command % escaped_attrs

1124

733

except TypeError as error:

1136

745

# The exception is when not debugging but nevertheless

1137

746

# running in the foreground; use the previously

1138

747

# created wnull.

1139

popen_args = {"close_fds": True,

1140

"shell": True,

1141

"cwd": "/"}

748

popen_args = { "close_fds": True,

749

"shell": True,

750

"cwd": "/" }

1142

751

if (not self.server_settings["debug"]

1143

752

and self.server_settings["foreground"]):

1144

753

popen_args.update({"stdout": wnull,

1145

"stderr": wnull})

1146

pipe = multiprocessing.Pipe(duplex=False)

754

"stderr": wnull })

755

pipe = multiprocessing.Pipe(duplex = False)

1147

756

self.checker = multiprocessing.Process(

1148

target=call_pipe,

1149

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

1150

kwargs=popen_args)

757

target = call_pipe,

758

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

759

kwargs = popen_args)

1151

760

self.checker.start()

1152

self.checker_callback_tag = GLib.io_add_watch(

1153

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

1154

GLib.PRIORITY_DEFAULT, GLib.IO_IN,

761

self.checker_callback_tag = gobject.io_add_watch(

762

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

1155

763

self.checker_callback, pipe[0], command)

1156

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

764

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

1157

765

return True

1158

766

1159

767

def stop_checker(self):

1160

768

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

1161

769

if self.checker_callback_tag:

1162

GLib.source_remove(self.checker_callback_tag)

770

gobject.source_remove(self.checker_callback_tag)

1163

771

self.checker_callback_tag = None

1164

772

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

1165

773

return

1174

782

byte_arrays=False):

1175

783

"""Decorators for marking methods of a DBusObjectWithProperties to

1176

784

become properties on the D-Bus.

1177

785

1178

786

The decorated method will be called with no arguments by "Get"

1179

787

and with one argument by "Set".

1180

788

1181

789

The parameters, where they are supported, are the same as

1182

790

dbus.service.method, except there is only "signature", since the

1183

791

type from Get() and the type sent to Set() is the same.

1187

795

if byte_arrays and signature != "ay":

1188

796

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

1189

797

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

1190

798

1191

799

def decorator(func):

1192

800

func._dbus_is_property = True

1193

801

func._dbus_interface = dbus_interface

1196

804

func._dbus_name = func.__name__

1197

805

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

1198

806

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

1199

func._dbus_get_args_options = {'byte_arrays': byte_arrays}

807

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

1200

808

return func

1201

809

1202

810

return decorator

1203

811

1204

812

1205

813

def dbus_interface_annotations(dbus_interface):

1206

814

"""Decorator for marking functions returning interface annotations

1207

815

1208

816

Usage:

1209

817

1210

818

@dbus_interface_annotations("org.example.Interface")

1211

819

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

1212

820

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

1213

821

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

1214

822

"false"}

1215

823

"""

1216

824

1217

825

def decorator(func):

1218

826

func._dbus_is_interface = True

1219

827

func._dbus_interface = dbus_interface

1220

828

func._dbus_name = dbus_interface

1221

829

return func

1222

830

1223

831

return decorator

1224

832

1225

833

1226

834

def dbus_annotations(annotations):

1227

835

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

1228

836

Usage:

1229

837

1230

838

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

1231

839

"org.freedesktop.DBus.Property."

1232

840

"EmitsChangedSignal": "false"})

1234

842

access="r")

1235

843

def Property_dbus_property(self):

1236

844

return dbus.Boolean(False)

1237

845

1238

846

See also the DBusObjectWithAnnotations class.

1239

847

"""

1240

848

1241

849

def decorator(func):

1242

850

func._dbus_annotations = annotations

1243

851

return func

1244

852

1245

853

return decorator

1246

854

1247

855

1265

873

1266

874

class DBusObjectWithAnnotations(dbus.service.Object):

1267

875

"""A D-Bus object with annotations.

1268

876

1269

877

Classes inheriting from this can use the dbus_annotations

1270

878

decorator to add annotations to methods or signals.

1271

879

"""

1272

880

1273

881

@staticmethod

1274

882

def _is_dbus_thing(thing):

1275

883

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

1276

884

1277

885

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

1278

886

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

1279

887

"""

1280

888

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

1281

889

False)

1282

890

1283

891

def _get_all_dbus_things(self, thing):

1284

892

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

1285

893

"""

1288

896

for cls in self.__class__.__mro__

1289

897

for name, athing in

1290

898

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

1291

899

1292

900

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1293

out_signature="s",

1294

path_keyword='object_path',

1295

connection_keyword='connection')

901

out_signature = "s",

902

path_keyword = 'object_path',

903

connection_keyword = 'connection')

1296

904

def Introspect(self, object_path, connection):

1297

905

"""Overloading of standard D-Bus method.

1298

906

1299

907

Inserts annotation tags on methods and signals.

1300

908

"""

1301

909

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

1302

910

connection)

1303

911

try:

1304

912

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

1305

913

1306

914

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

1307

915

# Add annotation tags

1308

916

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

1335

943

if_tag.appendChild(ann_tag)

1336

944

# Fix argument name for the Introspect method itself

1337

945

if (if_tag.getAttribute("name")

1338

== dbus.INTROSPECTABLE_IFACE):

946

== dbus.INTROSPECTABLE_IFACE):

1339

947

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

1340

948

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

1341

949

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

1354

962

1355

963

class DBusObjectWithProperties(DBusObjectWithAnnotations):

1356

964

"""A D-Bus object with properties.

1357

965

1358

966

Classes inheriting from this can use the dbus_service_property

1359

967

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

1360

968

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

1361

969

"""

1362

970

1363

971

def _get_dbus_property(self, interface_name, property_name):

1364

972

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

1365

973

property with the specified name and interface.

1370

978

if (value._dbus_name == property_name

1371

979

and value._dbus_interface == interface_name):

1372

980

return value.__get__(self)

1373

981

1374

982

# No such property

1375

983

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

1376

984

self.dbus_object_path, interface_name, property_name))

1377

985

1378

986

@classmethod

1379

987

def _get_all_interface_names(cls):

1380

988

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

1383

991

for x in (inspect.getmro(cls))

1384

992

for attr in dir(x))

1385

993

if name is not None)

1386

994

1387

995

@dbus.service.method(dbus.PROPERTIES_IFACE,

1388

996

in_signature="ss",

1389

997

out_signature="v")

1397

1005

if not hasattr(value, "variant_level"):

1398

1006

return value

1399

1007

return type(value)(value, variant_level=value.variant_level+1)

1400

1008

1401

1009

@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")

1402

1010

def Set(self, interface_name, property_name, value):

1403

1011

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

1415

1023

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

1416

1024

for byte in value))

1417

1025

prop(value)

1418

1026

1419

1027

@dbus.service.method(dbus.PROPERTIES_IFACE,

1420

1028

in_signature="s",

1421

1029

out_signature="a{sv}")

1422

1030

def GetAll(self, interface_name):

1423

1031

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

1424

1032

standard.

1425

1033

1426

1034

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

1427

1035

"""

1428

1036

properties = {}

1439

1047

properties[name] = value

1440

1048

continue

1441

1049

properties[name] = type(value)(

1442

value, variant_level=value.variant_level + 1)

1050

value, variant_level = value.variant_level + 1)

1443

1051

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

1444

1052

1445

1053

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

1446

1054

def PropertiesChanged(self, interface_name, changed_properties,

1447

1055

invalidated_properties):

1449

1057

standard.

1450

1058

"""

1451

1059

pass

1452

1060

1453

1061

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1454

1062

out_signature="s",

1455

1063

path_keyword='object_path',

1456

1064

connection_keyword='connection')

1457

1065

def Introspect(self, object_path, connection):

1458

1066

"""Overloading of standard D-Bus method.

1459

1067

1460

1068

Inserts property tags and interface annotation tags.

1461

1069

"""

1462

1070

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1464

1072

connection)

1465

1073

try:

1466

1074

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

1467

1075

1468

1076

def make_tag(document, name, prop):

1469

1077

e = document.createElement("property")

1470

1078

e.setAttribute("name", name)

1471

1079

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

1472

1080

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

1473

1081

return e

1474

1082

1475

1083

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

1476

1084

# Add property tags

1477

1085

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

1519

1127

exc_info=error)

1520

1128

return xmlstring

1521

1129

1522

1523

1130

try:

1524

1131

dbus.OBJECT_MANAGER_IFACE

1525

1132

except AttributeError:

1526

1133

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

1527

1134

1528

1529

1135

class DBusObjectWithObjectManager(DBusObjectWithAnnotations):

1530

1136

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

1531

1137

1532

1138

Classes inheriting from this exposes the standard

1533

1139

GetManagedObjects call and the InterfacesAdded and

1534

1140

InterfacesRemoved signals on the standard

1535

1141

"org.freedesktop.DBus.ObjectManager" interface.

1536

1142

1537

1143

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

1538

1144

manually.

1539

1145

"""

1540

1146

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

1541

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

1147

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

1542

1148

def GetManagedObjects(self):

1543

1149

"""This function must be overridden"""

1544

1150

raise NotImplementedError()

1545

1151

1546

1152

@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,

1547

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

1153

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

1548

1154

def InterfacesAdded(self, object_path, interfaces_and_properties):

1549

1155

pass

1550

1551

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

1156

1157

@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,

1158

signature = "oas")

1552

1159

def InterfacesRemoved(self, object_path, interfaces):

1553

1160

pass

1554

1161

1555

1162

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1556

out_signature="s",

1557

path_keyword='object_path',

1558

connection_keyword='connection')

1163

out_signature = "s",

1164

path_keyword = 'object_path',

1165

connection_keyword = 'connection')

1559

1166

def Introspect(self, object_path, connection):

1560

1167

"""Overloading of standard D-Bus method.

1561

1168

1562

1169

Override return argument name of GetManagedObjects to be

1563

1170

"objpath_interfaces_and_properties"

1564

1171

"""

1565

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1566

object_path,

1567

connection)

1172

xmlstring = DBusObjectWithAnnotations(self, object_path,

1173

connection)

1568

1174

try:

1569

1175

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

1570

1176

1571

1177

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

1572

1178

# Fix argument name for the GetManagedObjects method

1573

1179

if (if_tag.getAttribute("name")

1574

== dbus.OBJECT_MANAGER_IFACE):

1180

== dbus.OBJECT_MANAGER_IFACE):

1575

1181

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

1576

1182

if (cn.getAttribute("name")

1577

1183

== "GetManagedObjects"):

1587

1193

except (AttributeError, xml.dom.DOMException,

1588

1194

xml.parsers.expat.ExpatError) as error:

1589

1195

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

1590

exc_info=error)

1196

exc_info = error)

1591

1197

return xmlstring

1592

1198

1593

1594

1199

def datetime_to_dbus(dt, variant_level=0):

1595

1200

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

1596

1201

if dt is None:

1597

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

1202

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

1598

1203

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

1599

1204

1600

1205

1603

1208

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

1604

1209

interface names according to the "alt_interface_names" mapping.

1605

1210

Usage:

1606

1211

1607

1212

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

1608

1213

"net.example.AlternateInterface"})

1609

1214

class SampleDBusObject(dbus.service.Object):

1610

1215

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

1611

1216

def SampleDBusMethod():

1612

1217

pass

1613

1218

1614

1219

The above "SampleDBusMethod" on "SampleDBusObject" will be

1615

1220

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

1616

1221

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

1617

1222

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

1618

1223

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

1619

1224

1620

1225

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

1621

1226

(from DBusObjectWithProperties) and interfaces (from the

1622

1227

dbus_interface_annotations decorator).

1623

1228

"""

1624

1229

1625

1230

def wrapper(cls):

1626

1231

for orig_interface_name, alt_interface_name in (

1627

1232

alt_interface_names.items()):

1642

1247

interface_names.add(alt_interface)

1643

1248

# Is this a D-Bus signal?

1644

1249

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

1645

# Extract the original non-method undecorated

1646

# function by black magic

1647

1250

if sys.version_info.major == 2:

1251

# Extract the original non-method undecorated

1252

# function by black magic

1648

1253

nonmethod_func = (dict(

1649

1254

zip(attribute.func_code.co_freevars,

1650

1255

attribute.__closure__))

1651

1256

["func"].cell_contents)

1652

1257

else:

1653

nonmethod_func = (dict(

1654

zip(attribute.__code__.co_freevars,

1655

attribute.__closure__))

1656

["func"].cell_contents)

1258

nonmethod_func = attribute

1657

1259

# Create a new, but exactly alike, function

1658

1260

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

1659

1261

# with the alternate D-Bus interface name

1660

new_function = copy_function(nonmethod_func)

1262

if sys.version_info.major == 2:

1263

new_function = types.FunctionType(

1264

nonmethod_func.func_code,

1265

nonmethod_func.func_globals,

1266

nonmethod_func.func_name,

1267

nonmethod_func.func_defaults,

1268

nonmethod_func.func_closure)

1269

else:

1270

new_function = types.FunctionType(

1271

nonmethod_func.__code__,

1272

nonmethod_func.__globals__,

1273

nonmethod_func.__name__,

1274

nonmethod_func.__defaults__,

1275

nonmethod_func.__closure__)

1661

1276

new_function = (dbus.service.signal(

1662

1277

alt_interface,

1663

1278

attribute._dbus_signature)(new_function))

1667

1282

attribute._dbus_annotations)

1668

1283

except AttributeError:

1669

1284

pass

1670

1671

1285

# Define a creator of a function to call both the

1672

1286

# original and alternate functions, so both the

1673

1287

# original and alternate signals gets sent when

1676

1290

"""This function is a scope container to pass

1677

1291

func1 and func2 to the "call_both" function

1678

1292

outside of its arguments"""

1679

1680

@functools.wraps(func2)

1293

1681

1294

def call_both(*args, **kwargs):

1682

1295

"""This function will emit two D-Bus

1683

1296

signals by calling func1 and func2"""

1684

1297

func1(*args, **kwargs)

1685

1298

func2(*args, **kwargs)

1686

# Make wrapper function look like a D-Bus

1687

# signal

1688

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

1689

if name.startswith("_dbus_"):

1690

setattr(call_both, name, attr)

1691

1299

1692

1300

return call_both

1693

1301

# Create the "call_both" function and add it to

1694

1302

# the class

1704

1312

alt_interface,

1705

1313

attribute._dbus_in_signature,

1706

1314

attribute._dbus_out_signature)

1707

(copy_function(attribute)))

1315

(types.FunctionType(attribute.func_code,

1316

attribute.func_globals,

1317

attribute.func_name,

1318

attribute.func_defaults,

1319

attribute.func_closure)))

1708

1320

# Copy annotations, if any

1709

1321

try:

1710

1322

attr[attrname]._dbus_annotations = dict(

1722

1334

attribute._dbus_access,

1723

1335

attribute._dbus_get_args_options

1724

1336

["byte_arrays"])

1725

(copy_function(attribute)))

1337

(types.FunctionType(

1338

attribute.func_code,

1339

attribute.func_globals,

1340

attribute.func_name,

1341

attribute.func_defaults,

1342

attribute.func_closure)))

1726

1343

# Copy annotations, if any

1727

1344

try:

1728

1345

attr[attrname]._dbus_annotations = dict(

1737

1354

# to the class.

1738

1355

attr[attrname] = (

1739

1356

dbus_interface_annotations(alt_interface)

1740

(copy_function(attribute)))

1357

(types.FunctionType(attribute.func_code,

1358

attribute.func_globals,

1359

attribute.func_name,

1360

attribute.func_defaults,

1361

attribute.func_closure)))

1741

1362

if deprecate:

1742

1363

# Deprecate all alternate interfaces

1743

iname = "_AlternateDBusNames_interface_annotation{}"

1364

iname="_AlternateDBusNames_interface_annotation{}"

1744

1365

for interface_name in interface_names:

1745

1366

1746

1367

@dbus_interface_annotations(interface_name)

1747

1368

def func(self):

1748

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

1749

"true"}

1369

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

1370

"true" }

1750

1371

# Find an unused name

1751

1372

for aname in (iname.format(i)

1752

1373

for i in itertools.count()):

1756

1377

if interface_names:

1757

1378

# Replace the class with a new subclass of it with

1758

1379

# methods, signals, etc. as created above.

1759

if sys.version_info.major == 2:

1760

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

1761

(cls, ), attr)

1762

else:

1763

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

1764

(cls, ), attr)

1380

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

1381

(cls, ), attr)

1765

1382

return cls

1766

1383

1767

1384

return wrapper

1768

1385

1769

1386

1771

1388

"se.bsnet.fukt.Mandos"})

1772

1389

class ClientDBus(Client, DBusObjectWithProperties):

1773

1390

"""A Client class using D-Bus

1774

1391

1775

1392

Attributes:

1776

1393

dbus_object_path: dbus.ObjectPath

1777

1394

bus: dbus.SystemBus()

1778

1395

"""

1779

1396

1780

1397

runtime_expansions = (Client.runtime_expansions

1781

1398

+ ("dbus_object_path", ))

1782

1399

1783

1400

_interface = "se.recompile.Mandos.Client"

1784

1401

1785

1402

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

1786

1787

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

1403

1404

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

1788

1405

self.bus = bus

1789

1406

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

1790

1407

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

1796

1413

"/clients/" + client_object_name)

1797

1414

DBusObjectWithProperties.__init__(self, self.bus,

1798

1415

self.dbus_object_path)

1799

1416

1800

1417

def notifychangeproperty(transform_func, dbus_name,

1801

1418

type_func=lambda x: x,

1802

1419

variant_level=1,

1804

1421

_interface=_interface):

1805

1422

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

1806

1423

its changes to DBus.

1807

1424

1808

1425

transform_fun: Function that takes a value and a variant_level

1809

1426

and transforms it to a D-Bus type.

1810

1427

dbus_name: D-Bus name of the variable

1813

1430

variant_level: D-Bus variant level. Default: 1

1814

1431

"""

1815

1432

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

1816

1433

1817

1434

def setter(self, value):

1818

1435

if hasattr(self, "dbus_object_path"):

1819

1436

if (not hasattr(self, attrname) or

1826

1443

else:

1827

1444

dbus_value = transform_func(

1828

1445

type_func(value),

1829

variant_level=variant_level)

1446

variant_level = variant_level)

1830

1447

self.PropertyChanged(dbus.String(dbus_name),

1831

1448

dbus_value)

1832

1449

self.PropertiesChanged(

1833

1450

_interface,

1834

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

1835

dbus_value}),

1451

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

1452

dbus_value }),

1836

1453

dbus.Array())

1837

1454

setattr(self, attrname, value)

1838

1455

1839

1456

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

1840

1457

1841

1458

expires = notifychangeproperty(datetime_to_dbus, "Expires")

1842

1459

approvals_pending = notifychangeproperty(dbus.Boolean,

1843

1460

"ApprovalPending",

1844

type_func=bool)

1461

type_func = bool)

1845

1462

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

1846

1463

last_enabled = notifychangeproperty(datetime_to_dbus,

1847

1464

"LastEnabled")

1848

1465

checker = notifychangeproperty(

1849

1466

dbus.Boolean, "CheckerRunning",

1850

type_func=lambda checker: checker is not None)

1467

type_func = lambda checker: checker is not None)

1851

1468

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1852

1469

"LastCheckedOK")

1853

1470

last_checker_status = notifychangeproperty(dbus.Int16,

1858

1475

"ApprovedByDefault")

1859

1476

approval_delay = notifychangeproperty(

1860

1477

dbus.UInt64, "ApprovalDelay",

1861

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

1478

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

1862

1479

approval_duration = notifychangeproperty(

1863

1480

dbus.UInt64, "ApprovalDuration",

1864

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

1481

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

1865

1482

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

1866

1483

timeout = notifychangeproperty(

1867

1484

dbus.UInt64, "Timeout",

1868

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

1485

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

1869

1486

extended_timeout = notifychangeproperty(

1870

1487

dbus.UInt64, "ExtendedTimeout",

1871

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

1488

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

1872

1489

interval = notifychangeproperty(

1873

1490

dbus.UInt64, "Interval",

1874

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

1491

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

1875

1492

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

1876

1493

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

1877

1494

invalidate_only=True)

1878

1495

1879

1496

del notifychangeproperty

1880

1497

1881

1498

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

1882

1499

try:

1883

1500

self.remove_from_connection()

1886

1503

if hasattr(DBusObjectWithProperties, "__del__"):

1887

1504

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

1888

1505

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

1889

1506

1890

1507

def checker_callback(self, source, condition,

1891

1508

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

1892

1509

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

1908

1525

| self.last_checker_signal),

1909

1526

dbus.String(command))

1910

1527

return ret

1911

1528

1912

1529

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

1913

1530

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

1914

1531

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

1918

1535

# Emit D-Bus signal

1919

1536

self.CheckerStarted(self.current_checker_command)

1920

1537

return r

1921

1538

1922

1539

def _reset_approved(self):

1923

1540

self.approved = None

1924

1541

return False

1925

1542

1926

1543

def approve(self, value=True):

1927

1544

self.approved = value

1928

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

1929

* 1000), self._reset_approved)

1545

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

1546

* 1000), self._reset_approved)

1930

1547

self.send_changedstate()

1931

1932

# D-Bus methods, signals & properties

1933

1934

# Interfaces

1935

1936

# Signals

1937

1548

1549

## D-Bus methods, signals & properties

1550

1551

## Interfaces

1552

1553

## Signals

1554

1938

1555

# CheckerCompleted - signal

1939

1556

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

1940

1557

def CheckerCompleted(self, exitcode, waitstatus, command):

1941

1558

"D-Bus signal"

1942

1559

pass

1943

1560

1944

1561

# CheckerStarted - signal

1945

1562

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

1946

1563

def CheckerStarted(self, command):

1947

1564

"D-Bus signal"

1948

1565

pass

1949

1566

1950

1567

# PropertyChanged - signal

1951

1568

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

1952

1569

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

1953

1570

def PropertyChanged(self, property, value):

1954

1571

"D-Bus signal"

1955

1572

pass

1956

1573

1957

1574

# GotSecret - signal

1958

1575

@dbus.service.signal(_interface)

1959

1576

def GotSecret(self):

1962

1579

server to mandos-client

1963

1580

"""

1964

1581

pass

1965

1582

1966

1583

# Rejected - signal

1967

1584

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

1968

1585

def Rejected(self, reason):

1969

1586

"D-Bus signal"

1970

1587

pass

1971

1588

1972

1589

# NeedApproval - signal

1973

1590

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

1974

1591

def NeedApproval(self, timeout, default):

1975

1592

"D-Bus signal"

1976

1593

return self.need_approval()

1977

1978

# Methods

1979

1594

1595

## Methods

1596

1980

1597

# Approve - method

1981

1598

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

1982

1599

def Approve(self, value):

1983

1600

self.approve(value)

1984

1601

1985

1602

# CheckedOK - method

1986

1603

@dbus.service.method(_interface)

1987

1604

def CheckedOK(self):

1988

1605

self.checked_ok()

1989

1606

1990

1607

# Enable - method

1991

1608

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

1992

1609

@dbus.service.method(_interface)

1993

1610

def Enable(self):

1994

1611

"D-Bus method"

1995

1612

self.enable()

1996

1613

1997

1614

# StartChecker - method

1998

1615

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

1999

1616

@dbus.service.method(_interface)

2000

1617

def StartChecker(self):

2001

1618

"D-Bus method"

2002

1619

self.start_checker()

2003

1620

2004

1621

# Disable - method

2005

1622

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

2006

1623

@dbus.service.method(_interface)

2007

1624

def Disable(self):

2008

1625

"D-Bus method"

2009

1626

self.disable()

2010

1627

2011

1628

# StopChecker - method

2012

1629

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

2013

1630

@dbus.service.method(_interface)

2014

1631

def StopChecker(self):

2015

1632

self.stop_checker()

2016

2017

# Properties

2018

1633

1634

## Properties

1635

2019

1636

# ApprovalPending - property

2020

1637

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

2021

1638

def ApprovalPending_dbus_property(self):

2022

1639

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

2023

1640

2024

1641

# ApprovedByDefault - property

2025

1642

@dbus_service_property(_interface,

2026

1643

signature="b",

2029

1646

if value is None: # get

2030

1647

return dbus.Boolean(self.approved_by_default)

2031

1648

self.approved_by_default = bool(value)

2032

1649

2033

1650

# ApprovalDelay - property

2034

1651

@dbus_service_property(_interface,

2035

1652

signature="t",

2039

1656

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

2040

1657

* 1000)

2041

1658

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

2042

1659

2043

1660

# ApprovalDuration - property

2044

1661

@dbus_service_property(_interface,

2045

1662

signature="t",

2049

1666

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

2050

1667

* 1000)

2051

1668

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

2052

1669

2053

1670

# Name - property

2054

1671

@dbus_annotations(

2055

1672

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

2056

1673

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

2057

1674

def Name_dbus_property(self):

2058

1675

return dbus.String(self.name)

2059

2060

# KeyID - property

2061

@dbus_annotations(

2062

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

2063

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

2064

def KeyID_dbus_property(self):

2065

return dbus.String(self.key_id)

2066

1676

2067

1677

# Fingerprint - property

2068

1678

@dbus_annotations(

2069

1679

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

2070

1680

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

2071

1681

def Fingerprint_dbus_property(self):

2072

1682

return dbus.String(self.fingerprint)

2073

1683

2074

1684

# Host - property

2075

1685

@dbus_service_property(_interface,

2076

1686

signature="s",

2079

1689

if value is None: # get

2080

1690

return dbus.String(self.host)

2081

1691

self.host = str(value)

2082

1692

2083

1693

# Created - property

2084

1694

@dbus_annotations(

2085

1695

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

2086

1696

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

2087

1697

def Created_dbus_property(self):

2088

1698

return datetime_to_dbus(self.created)

2089

1699

2090

1700

# LastEnabled - property

2091

1701

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

2092

1702

def LastEnabled_dbus_property(self):

2093

1703

return datetime_to_dbus(self.last_enabled)

2094

1704

2095

1705

# Enabled - property

2096

1706

@dbus_service_property(_interface,

2097

1707

signature="b",

2103

1713

self.enable()

2104

1714

else:

2105

1715

self.disable()

2106

1716

2107

1717

# LastCheckedOK - property

2108

1718

@dbus_service_property(_interface,

2109

1719

signature="s",

2113

1723

self.checked_ok()

2114

1724

return

2115

1725

return datetime_to_dbus(self.last_checked_ok)

2116

1726

2117

1727

# LastCheckerStatus - property

2118

1728

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

2119

1729

def LastCheckerStatus_dbus_property(self):

2120

1730

return dbus.Int16(self.last_checker_status)

2121

1731

2122

1732

# Expires - property

2123

1733

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

2124

1734

def Expires_dbus_property(self):

2125

1735

return datetime_to_dbus(self.expires)

2126

1736

2127

1737

# LastApprovalRequest - property

2128

1738

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

2129

1739

def LastApprovalRequest_dbus_property(self):

2130

1740

return datetime_to_dbus(self.last_approval_request)

2131

1741

2132

1742

# Timeout - property

2133

1743

@dbus_service_property(_interface,

2134

1744

signature="t",

2149

1759

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

2150

1760

is None):

2151

1761

return

2152

GLib.source_remove(self.disable_initiator_tag)

2153

self.disable_initiator_tag = GLib.timeout_add(

1762

gobject.source_remove(self.disable_initiator_tag)

1763

self.disable_initiator_tag = gobject.timeout_add(

2154

1764

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

2155

1765

self.disable)

2156

1766

2157

1767

# ExtendedTimeout - property

2158

1768

@dbus_service_property(_interface,

2159

1769

signature="t",

2163

1773

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

2164

1774

* 1000)

2165

1775

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

2166

1776

2167

1777

# Interval - property

2168

1778

@dbus_service_property(_interface,

2169

1779

signature="t",

2176

1786

return

2177

1787

if self.enabled:

2178

1788

# Reschedule checker run

2179

GLib.source_remove(self.checker_initiator_tag)

2180

self.checker_initiator_tag = GLib.timeout_add(

1789

gobject.source_remove(self.checker_initiator_tag)

1790

self.checker_initiator_tag = gobject.timeout_add(

2181

1791

value, self.start_checker)

2182

self.start_checker() # Start one now, too

2183

1792

self.start_checker() # Start one now, too

1793

2184

1794

# Checker - property

2185

1795

@dbus_service_property(_interface,

2186

1796

signature="s",

2189

1799

if value is None: # get

2190

1800

return dbus.String(self.checker_command)

2191

1801

self.checker_command = str(value)

2192

1802

2193

1803

# CheckerRunning - property

2194

1804

@dbus_service_property(_interface,

2195

1805

signature="b",

2201

1811

self.start_checker()

2202

1812

else:

2203

1813

self.stop_checker()

2204

1814

2205

1815

# ObjectPath - property

2206

1816

@dbus_annotations(

2207

1817

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

2208

1818

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

2209

1819

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

2210

1820

def ObjectPath_dbus_property(self):

2211

return self.dbus_object_path # is already a dbus.ObjectPath

2212

1821

return self.dbus_object_path # is already a dbus.ObjectPath

1822

2213

1823

# Secret = property

2214

1824

@dbus_annotations(

2215

1825

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

2220

1830

byte_arrays=True)

2221

1831

def Secret_dbus_property(self, value):

2222

1832

self.secret = bytes(value)

2223

1833

2224

1834

del _interface

2225

1835

2226

1836

2227

class ProxyClient:

2228

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

1837

class ProxyClient(object):

1838

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

2229

1839

self._pipe = child_pipe

2230

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

1840

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

2231

1841

if not self._pipe.recv():

2232

raise KeyError(key_id or fpr)

2233

1842

raise KeyError(fpr)

1843

2234

1844

def __getattribute__(self, name):

2235

1845

if name == '_pipe':

2236

1846

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

2239

1849

if data[0] == 'data':

2240

1850

return data[1]

2241

1851

if data[0] == 'function':

2242

1852

2243

1853

def func(*args, **kwargs):

2244

1854

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

2245

1855

return self._pipe.recv()[1]

2246

1856

2247

1857

return func

2248

1858

2249

1859

def __setattr__(self, name, value):

2250

1860

if name == '_pipe':

2251

1861

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

2254

1864

2255

1865

class ClientHandler(socketserver.BaseRequestHandler, object):

2256

1866

"""A class to handle client connections.

2257

1867

2258

1868

Instantiated once for each connection to handle it.

2259

1869

Note: This will run in its own forked process."""

2260

1870

2261

1871

def handle(self):

2262

1872

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

2263

1873

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

2264

1874

str(self.client_address))

2265

1875

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

2266

1876

self.server.child_pipe.fileno())

2267

2268

session = gnutls.ClientSession(self.request)

2269

2270

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

2271

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

2272

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

2273

# "+DHE-DSS"))

1877

1878

session = gnutls.connection.ClientSession(

1879

self.request, gnutls.connection .X509Credentials())

1880

1881

# Note: gnutls.connection.X509Credentials is really a

1882

# generic GnuTLS certificate credentials object so long as

1883

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

1884

# here despite using OpenPGP certificates.

1885

1886

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

1887

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

1888

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

1889

# "+DHE-DSS"))

2274

1890

# Use a fallback default, since this MUST be set.

2275

1891

priority = self.server.gnutls_priority

2276

1892

if priority is None:

2277

1893

priority = "NORMAL"

2278

gnutls.priority_set_direct(session._c_object,

2279

priority.encode("utf-8"),

2280

None)

2281

1894

gnutls.library.functions.gnutls_priority_set_direct(

1895

session._c_object, priority, None)

1896

2282

1897

# Start communication using the Mandos protocol

2283

1898

# Get protocol number

2284

1899

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

2289

1904

except (ValueError, IndexError, RuntimeError) as error:

2290

1905

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

2291

1906

return

2292

1907

2293

1908

# Start GnuTLS connection

2294

1909

try:

2295

1910

session.handshake()

2296

except gnutls.Error as error:

1911

except gnutls.errors.GNUTLSError as error:

2297

1912

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

2298

1913

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

2299

1914

# established. Just abandon the request.

2300

1915

return

2301

1916

logger.debug("Handshake succeeded")

2302

1917

2303

1918

approval_required = False

2304

1919

try:

2305

if gnutls.has_rawpk:

2306

fpr = b""

2307

try:

2308

key_id = self.key_id(

2309

self.peer_certificate(session))

2310

except (TypeError, gnutls.Error) as error:

2311

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

2312

return

2313

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

2314

2315

else:

2316

key_id = b""

2317

try:

2318

fpr = self.fingerprint(

2319

self.peer_certificate(session))

2320

except (TypeError, gnutls.Error) as error:

2321

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

2322

return

2323

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

2324

2325

try:

2326

client = ProxyClient(child_pipe, key_id, fpr,

1920

try:

1921

fpr = self.fingerprint(

1922

self.peer_certificate(session))

1923

except (TypeError,

1924

gnutls.errors.GNUTLSError) as error:

1925

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

1926

return

1927

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

1928

1929

try:

1930

client = ProxyClient(child_pipe, fpr,

2327

1931

self.client_address)

2328

1932

except KeyError:

2329

1933

return

2330

1934

2331

1935

if client.approval_delay:

2332

1936

delay = client.approval_delay

2333

1937

client.approvals_pending += 1

2334

1938

approval_required = True

2335

1939

2336

1940

while True:

2337

1941

if not client.enabled:

2338

1942

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

2341

1945

# Emit D-Bus signal

2342

1946

client.Rejected("Disabled")

2343

1947

return

2344

1948

2345

1949

if client.approved or not client.approval_delay:

2346

# We are approved or approval is disabled

1950

#We are approved or approval is disabled

2347

1951

break

2348

1952

elif client.approved is None:

2349

1953

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

2360

1964

# Emit D-Bus signal

2361

1965

client.Rejected("Denied")

2362

1966

return

2363

2364

# wait until timeout or approved

1967

1968

#wait until timeout or approved

2365

1969

time = datetime.datetime.now()

2366

1970

client.changedstate.acquire()

2367

1971

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

2380

1984

break

2381

1985

else:

2382

1986

delay -= time2 - time

2383

2384

try:

2385

session.send(client.secret)

2386

except gnutls.Error as error:

2387

logger.warning("gnutls send failed",

2388

exc_info=error)

2389

return

2390

1987

1988

sent_size = 0

1989

while sent_size < len(client.secret):

1990

try:

1991

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

1992

except gnutls.errors.GNUTLSError as error:

1993

logger.warning("gnutls send failed",

1994

exc_info=error)

1995

return

1996

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

1997

len(client.secret) - (sent_size

1998

+ sent))

1999

sent_size += sent

2000

2391

2001

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

2392

2002

# bump the timeout using extended_timeout

2393

2003

client.bump_timeout(client.extended_timeout)

2394

2004

if self.server.use_dbus:

2395

2005

# Emit D-Bus signal

2396

2006

client.GotSecret()

2397

2007

2398

2008

finally:

2399

2009

if approval_required:

2400

2010

client.approvals_pending -= 1

2401

2011

try:

2402

2012

session.bye()

2403

except gnutls.Error as error:

2013

except gnutls.errors.GNUTLSError as error:

2404

2014

logger.warning("GnuTLS bye failed",

2405

2015

exc_info=error)

2406

2016

2407

2017

@staticmethod

2408

2018

def peer_certificate(session):

2409

"Return the peer's certificate as a bytestring"

2410

try:

2411

cert_type = gnutls.certificate_type_get2(session._c_object,

2412

gnutls.CTYPE_PEERS)

2413

except AttributeError:

2414

cert_type = gnutls.certificate_type_get(session._c_object)

2415

if gnutls.has_rawpk:

2416

valid_cert_types = frozenset((gnutls.CRT_RAWPK,))

2417

else:

2418

valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))

2419

# If not a valid certificate type...

2420

if cert_type not in valid_cert_types:

2421

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

2422

valid_cert_types)

2423

# ...return invalid data

2424

return b""

2019

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

2020

# If not an OpenPGP certificate...

2021

if (gnutls.library.functions.gnutls_certificate_type_get(

2022

session._c_object)

2023

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

2024

# ...do the normal thing

2025

return session.peer_certificate

2425

2026

list_size = ctypes.c_uint(1)

2426

cert_list = (gnutls.certificate_get_peers

2027

cert_list = (gnutls.library.functions

2028

.gnutls_certificate_get_peers

2427

2029

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

2428

2030

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

2429

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

2031

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

2032

" certificate")

2430

2033

if list_size.value == 0:

2431

2034

return None

2432

2035

cert = cert_list[0]

2433

2036

return ctypes.string_at(cert.data, cert.size)

2434

2435

@staticmethod

2436

def key_id(certificate):

2437

"Convert a certificate bytestring to a hexdigit key ID"

2438

# New GnuTLS "datum" with the public key

2439

datum = gnutls.datum_t(

2440

ctypes.cast(ctypes.c_char_p(certificate),

2441

ctypes.POINTER(ctypes.c_ubyte)),

2442

ctypes.c_uint(len(certificate)))

2443

# XXX all these need to be created in the gnutls "module"

2444

# New empty GnuTLS certificate

2445

pubkey = gnutls.pubkey_t()

2446

gnutls.pubkey_init(ctypes.byref(pubkey))

2447

# Import the raw public key into the certificate

2448

gnutls.pubkey_import(pubkey,

2449

ctypes.byref(datum),

2450

gnutls.X509_FMT_DER)

2451

# New buffer for the key ID

2452

buf = ctypes.create_string_buffer(32)

2453

buf_len = ctypes.c_size_t(len(buf))

2454

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

2455

gnutls.pubkey_get_key_id(pubkey,

2456

gnutls.KEYID_USE_SHA256,

2457

ctypes.cast(ctypes.byref(buf),

2458

ctypes.POINTER(ctypes.c_ubyte)),

2459

ctypes.byref(buf_len))

2460

# Deinit the certificate

2461

gnutls.pubkey_deinit(pubkey)

2462

2463

# Convert the buffer to a Python bytestring

2464

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

2465

# Convert the bytestring to hexadecimal notation

2466

hex_key_id = binascii.hexlify(key_id).upper()

2467

return hex_key_id

2468

2037

2469

2038

@staticmethod

2470

2039

def fingerprint(openpgp):

2471

2040

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

2472

2041

# New GnuTLS "datum" with the OpenPGP public key

2473

datum = gnutls.datum_t(

2042

datum = gnutls.library.types.gnutls_datum_t(

2474

2043

ctypes.cast(ctypes.c_char_p(openpgp),

2475

2044

ctypes.POINTER(ctypes.c_ubyte)),

2476

2045

ctypes.c_uint(len(openpgp)))

2477

2046

# New empty GnuTLS certificate

2478

crt = gnutls.openpgp_crt_t()

2479

gnutls.openpgp_crt_init(ctypes.byref(crt))

2047

crt = gnutls.library.types.gnutls_openpgp_crt_t()

2048

gnutls.library.functions.gnutls_openpgp_crt_init(

2049

ctypes.byref(crt))

2480

2050

# Import the OpenPGP public key into the certificate

2481

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

2482

gnutls.OPENPGP_FMT_RAW)

2051

gnutls.library.functions.gnutls_openpgp_crt_import(

2052

crt, ctypes.byref(datum),

2053

gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)

2483

2054

# Verify the self signature in the key

2484

2055

crtverify = ctypes.c_uint()

2485

gnutls.openpgp_crt_verify_self(crt, 0,

2486

ctypes.byref(crtverify))

2056

gnutls.library.functions.gnutls_openpgp_crt_verify_self(

2057

crt, 0, ctypes.byref(crtverify))

2487

2058

if crtverify.value != 0:

2488

gnutls.openpgp_crt_deinit(crt)

2489

raise gnutls.CertificateSecurityError(code

2490

=crtverify.value)

2059

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

2060

raise gnutls.errors.CertificateSecurityError(

2061

"Verify failed")

2491

2062

# New buffer for the fingerprint

2492

2063

buf = ctypes.create_string_buffer(20)

2493

2064

buf_len = ctypes.c_size_t()

2494

2065

# Get the fingerprint from the certificate into the buffer

2495

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

2496

ctypes.byref(buf_len))

2066

gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint(

2067

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

2497

2068

# Deinit the certificate

2498

gnutls.openpgp_crt_deinit(crt)

2069

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

2499

2070

# Convert the buffer to a Python bytestring

2500

2071

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

2501

2072

# Convert the bytestring to hexadecimal notation

2503

2074

return hex_fpr

2504

2075

2505

2076

2506

class MultiprocessingMixIn:

2077

class MultiprocessingMixIn(object):

2507

2078

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

2508

2079

2509

2080

def sub_process_main(self, request, address):

2510

2081

try:

2511

2082

self.finish_request(request, address)

2512

2083

except Exception:

2513

2084

self.handle_error(request, address)

2514

2085

self.close_request(request)

2515

2086

2516

2087

def process_request(self, request, address):

2517

2088

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

2518

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

2519

args=(request, address))

2089

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

2090

args = (request, address))

2520

2091

proc.start()

2521

2092

return proc

2522

2093

2523

2094

2524

class MultiprocessingMixInWithPipe(MultiprocessingMixIn):

2095

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

2525

2096

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

2526

2097

2527

2098

def process_request(self, request, client_address):

2528

2099

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

2529

2100

2530

2101

This function creates a new pipe in self.pipe

2531

2102

"""

2532

2103

parent_pipe, self.child_pipe = multiprocessing.Pipe()

2533

2104

2534

2105

proc = MultiprocessingMixIn.process_request(self, request,

2535

2106

client_address)

2536

2107

self.child_pipe.close()

2537

2108

self.add_pipe(parent_pipe, proc)

2538

2109

2539

2110

def add_pipe(self, parent_pipe, proc):

2540

2111

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

2541

2112

raise NotImplementedError()

2542

2113

2543

2114

2544

2115

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

2545

socketserver.TCPServer):

2116

socketserver.TCPServer, object):

2546

2117

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

2547

2118

2548

2119

Attributes:

2549

2120

enabled: Boolean; whether this server is activated yet

2550

2121

interface: None or a network interface name (string)

2551

2122

use_ipv6: Boolean; to use IPv6 or not

2552

2123

"""

2553

2124

2554

2125

def __init__(self, server_address, RequestHandlerClass,

2555

2126

interface=None,

2556

2127

use_ipv6=True,

2566

2137

self.socketfd = socketfd

2567

2138

# Save the original socket.socket() function

2568

2139

self.socket_socket = socket.socket

2569

2570

2140

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

2571

#

2141

#

2572

2142

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

2573

2143

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

2574

2144

# patching socket.socket.)

2575

#

2145

#

2576

2146

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

2577

2147

@functools.wraps(socket.socket)

2578

2148

def socket_wrapper(*args, **kwargs):

2590

2160

# socket_wrapper(), if socketfd was set.

2591

2161

socketserver.TCPServer.__init__(self, server_address,

2592

2162

RequestHandlerClass)

2593

2163

2594

2164

def server_bind(self):

2595

2165

"""This overrides the normal server_bind() function

2596

2166

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

2597

2167

bind to an address or port if they were not specified."""

2598

global SO_BINDTODEVICE

2599

2168

if self.interface is not None:

2600

2169

if SO_BINDTODEVICE is None:

2601

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

2602

# common enough.

2603

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

2604

SO_BINDTODEVICE = 25

2605

try:

2606

self.socket.setsockopt(

2607

socket.SOL_SOCKET, SO_BINDTODEVICE,

2608

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

2609

except socket.error as error:

2610

if error.errno == errno.EPERM:

2611

logger.error("No permission to bind to"

2612

" interface %s", self.interface)

2613

elif error.errno == errno.ENOPROTOOPT:

2614

logger.error("SO_BINDTODEVICE not available;"

2615

" cannot bind to interface %s",

2616

self.interface)

2617

elif error.errno == errno.ENODEV:

2618

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

2619

" cannot bind", self.interface)

2620

else:

2621

raise

2170

logger.error("SO_BINDTODEVICE does not exist;"

2171

" cannot bind to interface %s",

2172

self.interface)

2173

else:

2174

try:

2175

self.socket.setsockopt(

2176

socket.SOL_SOCKET, SO_BINDTODEVICE,

2177

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

2178

except socket.error as error:

2179

if error.errno == errno.EPERM:

2180

logger.error("No permission to bind to"

2181

" interface %s", self.interface)

2182

elif error.errno == errno.ENOPROTOOPT:

2183

logger.error("SO_BINDTODEVICE not available;"

2184

" cannot bind to interface %s",

2185

self.interface)

2186

elif error.errno == errno.ENODEV:

2187

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

2188

" cannot bind", self.interface)

2189

else:

2190

raise

2622

2191

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

2623

2192

if self.server_address[0] or self.server_address[1]:

2624

if self.server_address[1]:

2625

self.allow_reuse_address = True

2626

2193

if not self.server_address[0]:

2627

2194

if self.address_family == socket.AF_INET6:

2628

any_address = "::" # in6addr_any

2195

any_address = "::" # in6addr_any

2629

2196

else:

2630

any_address = "0.0.0.0" # INADDR_ANY

2197

any_address = "0.0.0.0" # INADDR_ANY

2631

2198

self.server_address = (any_address,

2632

2199

self.server_address[1])

2633

2200

elif not self.server_address[1]:

2643

2210

2644

2211

class MandosServer(IPv6_TCPServer):

2645

2212

"""Mandos server.

2646

2213

2647

2214

Attributes:

2648

2215

clients: set of Client objects

2649

2216

gnutls_priority GnuTLS priority string

2650

2217

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

2651

2652

Assumes a GLib.MainLoop event loop.

2218

2219

Assumes a gobject.MainLoop event loop.

2653

2220

"""

2654

2221

2655

2222

def __init__(self, server_address, RequestHandlerClass,

2656

2223

interface=None,

2657

2224

use_ipv6=True,

2667

2234

self.gnutls_priority = gnutls_priority

2668

2235

IPv6_TCPServer.__init__(self, server_address,

2669

2236

RequestHandlerClass,

2670

interface=interface,

2671

use_ipv6=use_ipv6,

2672

socketfd=socketfd)

2673

2237

interface = interface,

2238

use_ipv6 = use_ipv6,

2239

socketfd = socketfd)

2240

2674

2241

def server_activate(self):

2675

2242

if self.enabled:

2676

2243

return socketserver.TCPServer.server_activate(self)

2677

2244

2678

2245

def enable(self):

2679

2246

self.enabled = True

2680

2247

2681

2248

def add_pipe(self, parent_pipe, proc):

2682

2249

# Call "handle_ipc" for both data and EOF events

2683

GLib.io_add_watch(

2684

GLib.IOChannel.unix_new(parent_pipe.fileno()),

2685

GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,

2250

gobject.io_add_watch(

2251

parent_pipe.fileno(),

2252

gobject.IO_IN | gobject.IO_HUP,

2686

2253

functools.partial(self.handle_ipc,

2687

parent_pipe=parent_pipe,

2688

proc=proc))

2689

2254

parent_pipe = parent_pipe,

2255

proc = proc))

2256

2690

2257

def handle_ipc(self, source, condition,

2691

2258

parent_pipe=None,

2692

proc=None,

2259

proc = None,

2693

2260

client_object=None):

2694

2261

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

2695

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

2262

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

2696

2263

# Wait for other process to exit

2697

2264

proc.join()

2698

2265

return False

2699

2266

2700

2267

# Read a request from the child

2701

2268

request = parent_pipe.recv()

2702

2269

command = request[0]

2703

2270

2704

2271

if command == 'init':

2705

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

2706

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

2707

address = request[3]

2708

2709

for c in self.clients.values():

2710

if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":

2711

continue

2712

if key_id and c.key_id == key_id:

2713

client = c

2714

break

2715

if fpr and c.fingerprint == fpr:

2272

fpr = request[1]

2273

address = request[2]

2274

2275

for c in self.clients.itervalues():

2276

if c.fingerprint == fpr:

2716

2277

client = c

2717

2278

break

2718

2279

else:

2719

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

2720

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

2280

logger.info("Client not found for fingerprint: %s, ad"

2281

"dress: %s", fpr, address)

2721

2282

if self.use_dbus:

2722

2283

# Emit D-Bus signal

2723

mandos_dbus_service.ClientNotFound(key_id or fpr,

2284

mandos_dbus_service.ClientNotFound(fpr,

2724

2285

address[0])

2725

2286

parent_pipe.send(False)

2726

2287

return False

2727

2728

GLib.io_add_watch(

2729

GLib.IOChannel.unix_new(parent_pipe.fileno()),

2730

GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,

2288

2289

gobject.io_add_watch(

2290

parent_pipe.fileno(),

2291

gobject.IO_IN | gobject.IO_HUP,

2731

2292

functools.partial(self.handle_ipc,

2732

parent_pipe=parent_pipe,

2733

proc=proc,

2734

client_object=client))

2293

parent_pipe = parent_pipe,

2294

proc = proc,

2295

client_object = client))

2735

2296

parent_pipe.send(True)

2736

2297

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

2737

2298

# same fileno

2740

2301

funcname = request[1]

2741

2302

args = request[2]

2742

2303

kwargs = request[3]

2743

2304

2744

2305

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

2745

2306

funcname)(*args,

2746

2307

**kwargs)))

2747

2308

2748

2309

if command == 'getattr':

2749

2310

attrname = request[1]

2750

2311

if isinstance(client_object.__getattribute__(attrname),

2753

2314

else:

2754

2315

parent_pipe.send((

2755

2316

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

2756

2317

2757

2318

if command == 'setattr':

2758

2319

attrname = request[1]

2759

2320

value = request[2]

2760

2321

setattr(client_object, attrname, value)

2761

2322

2762

2323

return True

2763

2324

2764

2325

2765

2326

def rfc3339_duration_to_delta(duration):

2766

2327

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

2767

2768

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

2769

True

2770

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

2771

True

2772

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

2773

True

2774

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

2775

True

2776

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

2777

True

2778

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

2779

True

2780

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

2781

True

2328

2329

>>> rfc3339_duration_to_delta("P7D")

2330

datetime.timedelta(7)

2331

>>> rfc3339_duration_to_delta("PT60S")

2332

datetime.timedelta(0, 60)

2333

>>> rfc3339_duration_to_delta("PT60M")

2334

datetime.timedelta(0, 3600)

2335

>>> rfc3339_duration_to_delta("PT24H")

2336

datetime.timedelta(1)

2337

>>> rfc3339_duration_to_delta("P1W")

2338

datetime.timedelta(7)

2339

>>> rfc3339_duration_to_delta("PT5M30S")

2340

datetime.timedelta(0, 330)

2341

>>> rfc3339_duration_to_delta("P1DT3M20S")

2342

datetime.timedelta(1, 200)

2782

2343

"""

2783

2344

2784

2345

# Parsing an RFC 3339 duration with regular expressions is not

2785

2346

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

2786

2347

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

2787

2348

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

2788

2349

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

2789

2350

# avoid excessive use of external libraries.

2790

2351

2791

2352

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

2792

2353

Token = collections.namedtuple("Token", (

2793

2354

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

2826

2387

frozenset((token_year, token_month,

2827

2388

token_day, token_time,

2828

2389

token_week)))

2829

# Define starting values:

2830

# Value so far

2831

value = datetime.timedelta()

2390

# Define starting values

2391

value = datetime.timedelta() # Value so far

2832

2392

found_token = None

2833

# Following valid tokens

2834

followers = frozenset((token_duration, ))

2835

# String left to parse

2836

s = duration

2393

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

2394

s = duration # String left to parse

2837

2395

# Loop until end token is found

2838

2396

while found_token is not token_end:

2839

2397

# Search for any currently valid tokens

2863

2421

2864

2422

def string_to_delta(interval):

2865

2423

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

2866

2867

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

2868

True

2869

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

2870

True

2871

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

2872

True

2873

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

2874

True

2875

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

2876

True

2877

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

2878

True

2424

2425

>>> string_to_delta('7d')

2426

datetime.timedelta(7)

2427

>>> string_to_delta('60s')

2428

datetime.timedelta(0, 60)

2429

>>> string_to_delta('60m')

2430

datetime.timedelta(0, 3600)

2431

>>> string_to_delta('24h')

2432

datetime.timedelta(1)

2433

>>> string_to_delta('1w')

2434

datetime.timedelta(7)

2435

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

2436

datetime.timedelta(0, 330)

2879

2437

"""

2880

2438

2881

2439

try:

2882

2440

return rfc3339_duration_to_delta(interval)

2883

2441

except ValueError:

2884

2442

pass

2885

2443

2886

2444

timevalue = datetime.timedelta(0)

2887

2445

for s in interval.split():

2888

2446

try:

2906

2464

return timevalue

2907

2465

2908

2466

2909

def daemon(nochdir=False, noclose=False):

2467

def daemon(nochdir = False, noclose = False):

2910

2468

"""See daemon(3). Standard BSD Unix function.

2911

2469

2912

2470

This should really exist as os.daemon, but it doesn't (yet)."""

2913

2471

if os.fork():

2914

2472

sys.exit()

2932

2490

2933

2491

2934

2492

def main():

2935

2493

2936

2494

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

2937

2495

# Parsing of options, both command line and config file

2938

2496

2939

2497

parser = argparse.ArgumentParser()

2940

2498

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

2941

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

2499

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

2942

2500

help="show version number and exit")

2943

2501

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

2944

2502

help="Bind to interface IF")

2980

2538

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

2981

2539

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

2982

2540

default=None)

2983

2541

2984

2542

options = parser.parse_args()

2985

2543

2544

if options.check:

2545

import doctest

2546

fail_count, test_count = doctest.testmod()

2547

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

2548

2986

2549

# Default values for config file for server-global settings

2987

if gnutls.has_rawpk:

2988

priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"

2989

":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")

2990

else:

2991

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

2992

":+SIGN-DSA-SHA256")

2993

server_defaults = {"interface": "",

2994

"address": "",

2995

"port": "",

2996

"debug": "False",

2997

"priority": priority,

2998

"servicename": "Mandos",

2999

"use_dbus": "True",

3000

"use_ipv6": "True",

3001

"debuglevel": "",

3002

"restore": "True",

3003

"socket": "",

3004

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

3005

"foreground": "False",

3006

"zeroconf": "True",

3007

}

3008

del priority

3009

2550

server_defaults = { "interface": "",

2551

"address": "",

2552

"port": "",

2553

"debug": "False",

2554

"priority":

2555

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

2556

":+SIGN-DSA-SHA256",

2557

"servicename": "Mandos",

2558

"use_dbus": "True",

2559

"use_ipv6": "True",

2560

"debuglevel": "",

2561

"restore": "True",

2562

"socket": "",

2563

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

2564

"foreground": "False",

2565

"zeroconf": "True",

2566

}

2567

3010

2568

# Parse config file for server-global settings

3011

server_config = configparser.ConfigParser(server_defaults)

2569

server_config = configparser.SafeConfigParser(server_defaults)

3012

2570

del server_defaults

3013

2571

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

3014

# Convert the ConfigParser object to a dict

2572

# Convert the SafeConfigParser object to a dict

3015

2573

server_settings = server_config.defaults()

3016

2574

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

3017

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

3018

"foreground", "zeroconf"):

2575

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

3019

2576

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

3020

2577

option)

3021

2578

if server_settings["port"]:

3031

2588

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

3032

2589

["socket"])

3033

2590

del server_config

3034

2591

3035

2592

# Override the settings from the config file with command line

3036

2593

# options, if set.

3037

2594

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

3055

2612

if server_settings["debug"]:

3056

2613

server_settings["foreground"] = True

3057

2614

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

3058

2615

3059

2616

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

3060

2617

3061

2618

if (not server_settings["zeroconf"]

3062

2619

and not (server_settings["port"]

3063

2620

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

3064

2621

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

3065

2622

3066

2623

# For convenience

3067

2624

debug = server_settings["debug"]

3068

2625

debuglevel = server_settings["debuglevel"]

3072

2629

stored_state_file)

3073

2630

foreground = server_settings["foreground"]

3074

2631

zeroconf = server_settings["zeroconf"]

3075

2632

3076

2633

if debug:

3077

2634

initlogger(debug, logging.DEBUG)

3078

2635

else:

3081

2638

else:

3082

2639

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

3083

2640

initlogger(debug, level)

3084

2641

3085

2642

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

3086

2643

syslogger.setFormatter(

3087

2644

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

3088

2645

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

3089

2646

server_settings["servicename"])))

3090

2647

3091

2648

# Parse config file with clients

3092

client_config = configparser.ConfigParser(Client.client_defaults)

2649

client_config = configparser.SafeConfigParser(Client

2650

.client_defaults)

3093

2651

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

3094

2652

"clients.conf"))

3095

2653

3096

2654

global mandos_dbus_service

3097

2655

mandos_dbus_service = None

3098

2656

3099

2657

socketfd = None

3100

2658

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

3101

2659

socketfd = server_settings["socket"]

3117

2675

except IOError as e:

3118

2676

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

3119

2677

exc_info=e)

3120

3121

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

3122

("mandos", "mandos"),

3123

("nobody", "nogroup")):

2678

2679

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

3124

2680

try:

3125

2681

uid = pwd.getpwnam(name).pw_uid

3126

gid = pwd.getpwnam(group).pw_gid

2682

gid = pwd.getpwnam(name).pw_gid

3127

2683

break

3128

2684

except KeyError:

3129

2685

continue

3133

2689

try:

3134

2690

os.setgid(gid)

3135

2691

os.setuid(uid)

3136

if debug:

3137

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

3138

gid))

3139

2692

except OSError as error:

3140

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

3141

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

3142

2693

if error.errno != errno.EPERM:

3143

2694

raise

3144

2695

3145

2696

if debug:

3146

2697

# Enable all possible GnuTLS debugging

3147

2698

3148

2699

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

3149

2700

# - GnuTLS manual

3150

gnutls.global_set_log_level(11)

3151

3152

@gnutls.log_func

2701

gnutls.library.functions.gnutls_global_set_log_level(11)

2702

2703

@gnutls.library.types.gnutls_log_func

3153

2704

def debug_gnutls(level, string):

3154

2705

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

3155

3156

gnutls.global_set_log_function(debug_gnutls)

3157

2706

2707

gnutls.library.functions.gnutls_global_set_log_function(

2708

debug_gnutls)

2709

3158

2710

# Redirect stdin so all checkers get /dev/null

3159

2711

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

3160

2712

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

3161

2713

if null > 2:

3162

2714

os.close(null)

3163

2715

3164

2716

# Need to fork before connecting to D-Bus

3165

2717

if not foreground:

3166

2718

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

3167

2719

daemon()

3168

3169

if gi.version_info < (3, 10, 2):

3170

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

3171

# need to inform GLib that threads will be used.

3172

GLib.threads_init()

3173

2720

2721

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

2722

# need to inform gobject that threads will be used.

2723

gobject.threads_init()

2724

3174

2725

global main_loop

3175

2726

# From the Avahi example code

3176

2727

DBusGMainLoop(set_as_default=True)

3177

main_loop = GLib.MainLoop()

2728

main_loop = gobject.MainLoop()

3178

2729

bus = dbus.SystemBus()

3179

2730

# End of Avahi example code

3180

2731

if use_dbus:

3193

2744

if zeroconf:

3194

2745

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

3195

2746

service = AvahiServiceToSyslog(

3196

name=server_settings["servicename"],

3197

servicetype="_mandos._tcp",

3198

protocol=protocol,

3199

bus=bus)

2747

name = server_settings["servicename"],

2748

servicetype = "_mandos._tcp",

2749

protocol = protocol,

2750

bus = bus)

3200

2751

if server_settings["interface"]:

3201

2752

service.interface = if_nametoindex(

3202

2753

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

3203

2754

3204

2755

global multiprocessing_manager

3205

2756

multiprocessing_manager = multiprocessing.Manager()

3206

2757

3207

2758

client_class = Client

3208

2759

if use_dbus:

3209

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

3210

2760

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

2761

3211

2762

client_settings = Client.config_parser(client_config)

3212

2763

old_client_settings = {}

3213

2764

clients_data = {}

3214

2765

3215

2766

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

3216

2767

global wnull

3217

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

2768

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

3218

2769

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

3219

2770

# mode

3220

2771

if debug or not foreground:

3221

2772

wnull.close()

3222

2773

3223

2774

# Get client data and settings from last running state.

3224

2775

if server_settings["restore"]:

3225

2776

try:

3226

2777

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

3227

if sys.version_info.major == 2:

3228

clients_data, old_client_settings = pickle.load(

3229

stored_state)

3230

else:

3231

bytes_clients_data, bytes_old_client_settings = (

3232

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

3233

# Fix bytes to strings

3234

# clients_data

3235

# .keys()

3236

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

3237

if isinstance(key, bytes)

3238

else key): value

3239

for key, value in

3240

bytes_clients_data.items()}

3241

del bytes_clients_data

3242

for key in clients_data:

3243

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

3244

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

3245

for k, v in

3246

clients_data[key].items()}

3247

clients_data[key] = value

3248

# .client_structure

3249

value["client_structure"] = [

3250

(s.decode("utf-8")

3251

if isinstance(s, bytes)

3252

else s) for s in

3253

value["client_structure"]]

3254

# .name & .host

3255

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

3256

if isinstance(value[k], bytes):

3257

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

3258

if "key_id" not in value:

3259

value["key_id"] = ""

3260

elif "fingerprint" not in value:

3261

value["fingerprint"] = ""

3262

# old_client_settings

3263

# .keys()

3264

old_client_settings = {

3265

(key.decode("utf-8")

3266

if isinstance(key, bytes)

3267

else key): value

3268

for key, value in

3269

bytes_old_client_settings.items()}

3270

del bytes_old_client_settings

3271

# .host

3272

for value in old_client_settings.values():

3273

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

3274

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

3275

.decode("utf-8"))

2778

clients_data, old_client_settings = pickle.load(

2779

stored_state)

3276

2780

os.remove(stored_state_path)

3277

2781

except IOError as e:

3278

2782

if e.errno == errno.ENOENT:

3286

2790

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

3287

2791

"EOFError:",

3288

2792

exc_info=e)

3289

2793

3290

2794

with PGPEngine() as pgp:

3291

2795

for client_name, client in clients_data.items():

3292

2796

# Skip removed clients

3293

2797

if client_name not in client_settings:

3294

2798

continue

3295

2799

3296

2800

# Decide which value to use after restoring saved state.

3297

2801

# We have three different values: Old config file,

3298

2802

# new config file, and saved state.

3309

2813

client[name] = value

3310

2814

except KeyError:

3311

2815

pass

3312

2816

3313

2817

# Clients who has passed its expire date can still be

3314

2818

# enabled if its last checker was successful. A Client

3315

2819

# whose checker succeeded before we stored its state is

3348

2852

client_name))

3349

2853

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

3350

2854

["secret"])

3351

2855

3352

2856

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

3353

2857

for client_name in (set(old_client_settings)

3354

2858

- set(client_settings)):

3356

2860

for client_name in (set(client_settings)

3357

2861

- set(old_client_settings)):

3358

2862

clients_data[client_name] = client_settings[client_name]

3359

2863

3360

2864

# Create all client objects

3361

2865

for client_name, client in clients_data.items():

3362

2866

tcp_server.clients[client_name] = client_class(

3363

name=client_name,

3364

settings=client,

3365

server_settings=server_settings)

3366

2867

name = client_name,

2868

settings = client,

2869

server_settings = server_settings)

2870

3367

2871

if not tcp_server.clients:

3368

2872

logger.warning("No clients defined")

3369

2873

3370

2874

if not foreground:

3371

2875

if pidfile is not None:

3372

2876

pid = os.getpid()

3378

2882

pidfilename, pid)

3379

2883

del pidfile

3380

2884

del pidfilename

3381

3382

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

3383

GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,

3384

lambda: main_loop.quit() and False)

3385

2885

2886

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

2887

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

2888

3386

2889

if use_dbus:

3387

2890

3388

2891

@alternate_dbus_interfaces(

3389

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

2892

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

3390

2893

class MandosDBusService(DBusObjectWithObjectManager):

3391

2894

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

3392

2895

3393

2896

def __init__(self):

3394

2897

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

3395

2898

3396

2899

_interface = "se.recompile.Mandos"

3397

2900

3398

2901

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

3399

2902

def ClientAdded(self, objpath):

3400

2903

"D-Bus signal"

3401

2904

pass

3402

2905

3403

2906

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

3404

def ClientNotFound(self, key_id, address):

2907

def ClientNotFound(self, fingerprint, address):

3405

2908

"D-Bus signal"

3406

2909

pass

3407

2910

3408

2911

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

3409

2912

"true"})

3410

2913

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

3411

2914

def ClientRemoved(self, objpath, name):

3412

2915

"D-Bus signal"

3413

2916

pass

3414

2917

3415

2918

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

3416

2919

"true"})

3417

2920

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

3418

2921

def GetAllClients(self):

3419

2922

"D-Bus method"

3420

2923

return dbus.Array(c.dbus_object_path for c in

3421

tcp_server.clients.values())

3422

2924

tcp_server.clients.itervalues())

2925

3423

2926

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

3424

2927

"true"})

3425

2928

@dbus.service.method(_interface,

3427

2930

def GetAllClientsWithProperties(self):

3428

2931

"D-Bus method"

3429

2932

return dbus.Dictionary(

3430

{c.dbus_object_path: c.GetAll(

2933

{ c.dbus_object_path: c.GetAll(

3431

2934

"se.recompile.Mandos.Client")

3432

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

2935

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

3433

2936

signature="oa{sv}")

3434

2937

3435

2938

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

3436

2939

def RemoveClient(self, object_path):

3437

2940

"D-Bus method"

3438

for c in tcp_server.clients.values():

2941

for c in tcp_server.clients.itervalues():

3439

2942

if c.dbus_object_path == object_path:

3440

2943

del tcp_server.clients[c.name]

3441

2944

c.remove_from_connection()

3445

2948

self.client_removed_signal(c)

3446

2949

return

3447

2950

raise KeyError(object_path)

3448

2951

3449

2952

del _interface

3450

2953

3451

2954

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

3452

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

2955

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

3453

2956

def GetManagedObjects(self):

3454

2957

"""D-Bus method"""

3455

2958

return dbus.Dictionary(

3456

{client.dbus_object_path:

3457

dbus.Dictionary(

3458

{interface: client.GetAll(interface)

3459

for interface in

3460

client._get_all_interface_names()})

3461

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

3462

2959

{ client.dbus_object_path:

2960

dbus.Dictionary(

2961

{ interface: client.GetAll(interface)

2962

for interface in

2963

client._get_all_interface_names()})

2964

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

2965

3463

2966

def client_added_signal(self, client):

3464

2967

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

3465

2968

if use_dbus:

3467

2970

self.InterfacesAdded(

3468

2971

client.dbus_object_path,

3469

2972

dbus.Dictionary(

3470

{interface: client.GetAll(interface)

3471

for interface in

3472

client._get_all_interface_names()}))

2973

{ interface: client.GetAll(interface)

2974

for interface in

2975

client._get_all_interface_names()}))

3473

2976

# Old signal

3474

2977

self.ClientAdded(client.dbus_object_path)

3475

2978

3476

2979

def client_removed_signal(self, client):

3477

2980

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

3478

2981

if use_dbus:

3483

2986

# Old signal

3484

2987

self.ClientRemoved(client.dbus_object_path,

3485

2988

client.name)

3486

2989

3487

2990

mandos_dbus_service = MandosDBusService()

3488

3489

# Save modules to variables to exempt the modules from being

3490

# unloaded before the function registered with atexit() is run.

3491

mp = multiprocessing

3492

wn = wnull

3493

2991

3494

2992

def cleanup():

3495

2993

"Cleanup function; run on exit"

3496

2994

if zeroconf:

3497

2995

service.cleanup()

3498

3499

mp.active_children()

3500

wn.close()

2996

2997

multiprocessing.active_children()

2998

wnull.close()

3501

2999

if not (tcp_server.clients or client_settings):

3502

3000

return

3503

3001

3504

3002

# Store client before exiting. Secrets are encrypted with key

3505

3003

# based on what config file has. If config file is

3506

3004

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

3507

3005

clients = {}

3508

3006

with PGPEngine() as pgp:

3509

for client in tcp_server.clients.values():

3007

for client in tcp_server.clients.itervalues():

3510

3008

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

3511

3009

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

3512

3010

key)

3513

3011

client_dict = {}

3514

3012

3515

3013

# A list of attributes that can not be pickled

3516

3014

# + secret.

3517

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

3518

"checker", "server_settings"}

3015

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

3016

"checker", "server_settings" }

3519

3017

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

3520

3018

.Object):

3521

3019

exclude.add(name)

3522

3020

3523

3021

client_dict["encrypted_secret"] = (client

3524

3022

.encrypted_secret)

3525

3023

for attr in client.client_structure:

3526

3024

if attr not in exclude:

3527

3025

client_dict[attr] = getattr(client, attr)

3528

3026

3529

3027

clients[client.name] = client_dict

3530

3028

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

3531

3029

3532

3030

try:

3533

3031

with tempfile.NamedTemporaryFile(

3534

3032

mode='wb',

3536

3034

prefix='clients-',

3537

3035

dir=os.path.dirname(stored_state_path),

3538

3036

delete=False) as stored_state:

3539

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

3540

protocol=2)

3037

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

3541

3038

tempname = stored_state.name

3542

3039

os.rename(tempname, stored_state_path)

3543

3040

except (IOError, OSError) as e:

3553

3050

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

3554

3051

exc_info=e)

3555

3052

raise

3556

3053

3557

3054

# Delete all clients, and settings from config

3558

3055

while tcp_server.clients:

3559

3056

name, client = tcp_server.clients.popitem()

3562

3059

# Don't signal the disabling

3563

3060

client.disable(quiet=True)

3564

3061

# Emit D-Bus signal for removal

3565

if use_dbus:

3566

mandos_dbus_service.client_removed_signal(client)

3062

mandos_dbus_service.client_removed_signal(client)

3567

3063

client_settings.clear()

3568

3064

3569

3065

atexit.register(cleanup)

3570

3571

for client in tcp_server.clients.values():

3066

3067

for client in tcp_server.clients.itervalues():

3572

3068

if use_dbus:

3573

3069

# Emit D-Bus signal for adding

3574

3070

mandos_dbus_service.client_added_signal(client)

3575

3071

# Need to initiate checking of clients

3576

3072

if client.enabled:

3577

3073

client.init_checker()

3578

3074

3579

3075

tcp_server.enable()

3580

3076

tcp_server.server_activate()

3581

3077

3582

3078

# Find out what port we got

3583

3079

if zeroconf:

3584

3080

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

3589

3085

else: # IPv4

3590

3086

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

3591

3087

*tcp_server.socket.getsockname())

3592

3593

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

3594

3088

3089

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

3090

3595

3091

try:

3596

3092

if zeroconf:

3597

3093

# From the Avahi example code

3602

3098

cleanup()

3603

3099

sys.exit(1)

3604

3100

# End of Avahi example code

3605

3606

GLib.io_add_watch(

3607

GLib.IOChannel.unix_new(tcp_server.fileno()),

3608

GLib.PRIORITY_DEFAULT, GLib.IO_IN,

3609

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

3610

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

3611

3101

3102

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

3103

lambda *args, **kwargs:

3104

(tcp_server.handle_request

3105

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

3106

3612

3107

logger.debug("Starting main loop")

3613

3108

main_loop.run()

3614

3109

except AvahiError as error:

3623

3118

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

3624

3119

cleanup()

3625

3120

3626

3627

def should_only_run_tests():

3628

parser = argparse.ArgumentParser(add_help=False)

3629

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

3630

args, unknown_args = parser.parse_known_args()

3631

run_tests = args.check

3632

if run_tests:

3633

# Remove --check argument from sys.argv

3634

sys.argv[1:] = unknown_args

3635

return run_tests

3636

3637

# Add all tests from doctest strings

3638

def load_tests(loader, tests, none):

3639

import doctest

3640

tests.addTests(doctest.DocTestSuite())

3641

return tests

3642

3121

3643

3122

if __name__ == '__main__':

3644

try:

3645

if should_only_run_tests():

3646

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

3647

unittest.main()

3648

else:

3649

main()

3650

finally:

3651

logging.shutdown()

3123

main()