/mandos/trunk : revision 237.4.138

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#!/usr/bin/python

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

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#

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#!/usr/bin/python3 -bI

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# -*- coding: utf-8; lexical-binding: t -*-

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#

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

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#

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#

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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 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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15

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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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# 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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# 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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# 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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# 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 this program. If not, see

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

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#

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# along with Mandos. If not, see <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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from future_builtins import *

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try:

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from future_builtins import *

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except ImportError:

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pass

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41

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import SocketServer as socketserver

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import sys

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import unittest

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import argparse

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import logging

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import os

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try:

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import SocketServer as socketserver

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except ImportError:

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import socketserver

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import socket

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import argparse

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52

import datetime

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import errno

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import gnutls.crypto

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import gnutls.connection

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import gnutls.errors

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import gnutls.library.functions

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import gnutls.library.constants

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import gnutls.library.types

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import ConfigParser as configparser

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import sys

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try:

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import ConfigParser as configparser

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except ImportError:

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import configparser

52

58

import re

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import os

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59

import signal

55

60

import subprocess

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61

import atexit

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62

import stat

58

import logging

59

63

import logging.handlers

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64

import pwd

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65

import contextlib

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66

import struct

63

67

import fcntl

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68

import functools

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import cPickle as pickle

69

try:

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import cPickle as pickle

71

except ImportError:

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import pickle

66

73

import multiprocessing

67

74

import types

68

75

import binascii

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76

import tempfile

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import itertools

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78

import collections

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import codecs

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import random

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import shlex

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82

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import dbus

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import dbus.service

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import gobject

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import avahi

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import gi

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from gi.repository import GLib

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87

from dbus.mainloop.glib import DBusGMainLoop

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import ctypes

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89

import ctypes.util

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import xml.dom.minidom

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import inspect

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92

83

try:

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if sys.version_info.major == 2:

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__metaclass__ = type

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str = unicode

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input = raw_input

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98

# Add collections.abc.Callable if it does not exist

99

try:

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collections.abc.Callable

101

except AttributeError:

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class abc:

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Callable = collections.Callable

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collections.abc = abc

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del abc

106

107

# Add shlex.quote if it does not exist

108

try:

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shlex.quote

110

except AttributeError:

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shlex.quote = re.escape

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113

# Show warnings by default

114

if not sys.warnoptions:

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import warnings

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warnings.simplefilter("default")

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118

# Try to find the value of SO_BINDTODEVICE:

119

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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122

SO_BINDTODEVICE = socket.SO_BINDTODEVICE

85

123

except AttributeError:

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124

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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128

except ImportError:

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SO_BINDTODEVICE = None

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version = "1.6.4"

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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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if sys.version_info < (3, 2):

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configparser.Configparser = configparser.SafeConfigParser

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146

version = "1.8.15"

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stored_state_file = "clients.pickle"

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148

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logger = logging.getLogger()

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log = logging.getLogger(os.path.basename(sys.argv[0]))

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

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syslogger = None

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152

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try:

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if_nametoindex = (ctypes.cdll.LoadLibrary

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

100

.if_nametoindex)

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if_nametoindex = ctypes.cdll.LoadLibrary(

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

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except (OSError, AttributeError):

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102

158

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

105

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

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ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

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

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interface))

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

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ifreq[16:20])[0]

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

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

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return interface_index

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166

113

167

168

def copy_function(func):

169

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

170

if sys.version_info.major == 2:

171

return types.FunctionType(func.func_code,

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func.func_globals,

173

func.func_name,

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func.func_defaults,

175

func.func_closure)

176

else:

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return types.FunctionType(func.__code__,

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func.__globals__,

179

func.__name__,

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func.__defaults__,

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func.__closure__)

182

183

114

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

115

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"""init logger and add loglevel"""

116

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syslogger = (logging.handlers.SysLogHandler

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(facility =

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logging.handlers.SysLogHandler.LOG_DAEMON,

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

186

187

global syslogger

188

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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191

syslogger.setFormatter(logging.Formatter

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

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' %(message)s'))

124

logger.addHandler(syslogger)

125

192

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

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" %(message)s"))

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log.addHandler(syslogger)

195

126

196

if debug:

127

197

console = logging.StreamHandler()

128

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

129

' [%(process)d]:'

130

' %(levelname)s:'

131

' %(message)s'))

132

logger.addHandler(console)

133

logger.setLevel(level)

198

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

199

" [%(process)d]:"

200

" %(levelname)s:"

201

" %(message)s"))

202

log.addHandler(console)

203

log.setLevel(level)

134

204

135

205

136

206

class PGPError(Exception):

138

208

pass

139

209

140

210

141

class PGPEngine(object):

211

class PGPEngine:

142

212

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

213

143

214

def __init__(self):

144

215

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

145

self.gnupgargs = ['--batch',

146

'--home', self.tempdir,

147

'--force-mdc',

148

'--quiet',

149

'--no-use-agent']

150

216

self.gpg = "gpg"

217

try:

218

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

219

for line in output.splitlines():

220

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

221

if name == b"gpg":

222

self.gpg = path

223

break

224

except OSError as e:

225

if e.errno != errno.ENOENT:

226

raise

227

self.gnupgargs = ["--batch",

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"--homedir", self.tempdir,

229

"--force-mdc",

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"--quiet"]

231

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

232

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

233

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

234

151

235

def __enter__(self):

152

236

return self

153

237

154

238

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

155

239

self._cleanup()

156

240

return False

157

241

158

242

def __del__(self):

159

243

self._cleanup()

160

244

161

245

def _cleanup(self):

162

246

if self.tempdir is not None:

163

247

# Delete contents of tempdir

164

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

165

topdown = False):

249

topdown=False):

166

250

for filename in files:

167

251

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

168

252

for dirname in dirs:

170

254

# Remove tempdir

171

255

os.rmdir(self.tempdir)

172

256

self.tempdir = None

173

257

174

258

def password_encode(self, password):

175

259

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

176

260

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

181

265

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

182

266

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

183

267

return encoded

184

268

185

269

def encrypt(self, data, password):

186

270

passphrase = self.password_encode(password)

187

with tempfile.NamedTemporaryFile(dir=self.tempdir

188

) as passfile:

271

with tempfile.NamedTemporaryFile(

272

dir=self.tempdir) as passfile:

189

273

passfile.write(passphrase)

190

274

passfile.flush()

191

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

192

'--passphrase-file',

275

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

276

"--passphrase-file",

193

277

passfile.name]

194

278

+ self.gnupgargs,

195

stdin = subprocess.PIPE,

196

stdout = subprocess.PIPE,

197

stderr = subprocess.PIPE)

198

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

279

stdin=subprocess.PIPE,

280

stdout=subprocess.PIPE,

281

stderr=subprocess.PIPE)

282

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

199

283

if proc.returncode != 0:

200

284

raise PGPError(err)

201

285

return ciphertext

202

286

203

287

def decrypt(self, data, password):

204

288

passphrase = self.password_encode(password)

205

with tempfile.NamedTemporaryFile(dir = self.tempdir

206

) as passfile:

289

with tempfile.NamedTemporaryFile(

290

dir=self.tempdir) as passfile:

207

291

passfile.write(passphrase)

208

292

passfile.flush()

209

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

210

'--passphrase-file',

293

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

294

"--passphrase-file",

211

295

passfile.name]

212

296

+ self.gnupgargs,

213

stdin = subprocess.PIPE,

214

stdout = subprocess.PIPE,

215

stderr = subprocess.PIPE)

216

decrypted_plaintext, err = proc.communicate(input

217

= data)

297

stdin=subprocess.PIPE,

298

stdout=subprocess.PIPE,

299

stderr=subprocess.PIPE)

300

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

218

301

if proc.returncode != 0:

219

302

raise PGPError(err)

220

303

return decrypted_plaintext

221

304

222

305

306

# Pretend that we have an Avahi module

307

class avahi:

308

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

309

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

310

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

311

PROTO_INET = 0 # avahi-common/address.h

312

PROTO_INET6 = 1 # avahi-common/address.h

313

DBUS_NAME = "org.freedesktop.Avahi"

314

DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"

315

DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"

316

DBUS_PATH_SERVER = "/"

317

318

@staticmethod

319

def string_array_to_txt_array(t):

320

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

321

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

322

ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h

323

ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h

324

ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h

325

SERVER_INVALID = 0 # avahi-common/defs.h

326

SERVER_REGISTERING = 1 # avahi-common/defs.h

327

SERVER_RUNNING = 2 # avahi-common/defs.h

328

SERVER_COLLISION = 3 # avahi-common/defs.h

329

SERVER_FAILURE = 4 # avahi-common/defs.h

330

331

223

332

class AvahiError(Exception):

224

333

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

225

334

self.value = value

226

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

227

def __unicode__(self):

228

return unicode(repr(self.value))

335

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

336

**kwargs)

337

229

338

230

339

class AvahiServiceError(AvahiError):

231

340

pass

232

341

342

233

343

class AvahiGroupError(AvahiError):

234

344

pass

235

345

236

346

237

class AvahiService(object):

347

class AvahiService:

238

348

"""An Avahi (Zeroconf) service.

239

349

240

350

Attributes:

241

351

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

242

352

Used to optionally bind to the specified interface.

243

244

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

353

354

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

245

355

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

246

356

port: integer; what port to announce

247

357

TXT: list of strings; TXT record for the service

254

364

server: D-Bus Server

255

365

bus: dbus.SystemBus()

256

366

"""

257

258

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

259

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

260

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

261

protocol = avahi.PROTO_UNSPEC, bus = None):

367

368

def __init__(self,

369

interface=avahi.IF_UNSPEC,

370

name=None,

371

servicetype=None,

372

port=None,

373

TXT=None,

374

domain="",

375

host="",

376

max_renames=32768,

377

protocol=avahi.PROTO_UNSPEC,

378

bus=None):

262

379

self.interface = interface

263

380

self.name = name

264

381

self.type = servicetype

273

390

self.server = None

274

391

self.bus = bus

275

392

self.entry_group_state_changed_match = None

276

277

def rename(self):

393

394

def rename(self, remove=True):

278

395

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

279

396

if self.rename_count >= self.max_renames:

280

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

281

" after %i retries, exiting.",

282

self.rename_count)

397

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

398

" after %i retries, exiting.",

399

self.rename_count)

283

400

raise AvahiServiceError("Too many renames")

284

self.name = unicode(self.server

285

.GetAlternativeServiceName(self.name))

286

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

287

self.name)

288

self.remove()

289

try:

290

self.add()

291

except dbus.exceptions.DBusException as error:

292

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

293

self.cleanup()

294

os._exit(1)

401

self.name = str(

402

self.server.GetAlternativeServiceName(self.name))

295

403

self.rename_count += 1

296

404

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

405

self.name)

406

if remove:

407

self.remove()

408

try:

409

self.add()

410

except dbus.exceptions.DBusException as error:

411

if (error.get_dbus_name()

412

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

413

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

414

return self.rename(remove=False)

415

else:

416

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

417

self.cleanup()

418

os._exit(1)

419

297

420

def remove(self):

298

421

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

299

422

if self.entry_group_state_changed_match is not None:

301

424

self.entry_group_state_changed_match = None

302

425

if self.group is not None:

303

426

self.group.Reset()

304

427

305

428

def add(self):

306

429

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

307

430

self.remove()

312

435

avahi.DBUS_INTERFACE_ENTRY_GROUP)

313

436

self.entry_group_state_changed_match = (

314

437

self.group.connect_to_signal(

315

'StateChanged', self.entry_group_state_changed))

316

logger.debug("Adding Zeroconf service '%s' of type '%s' ...",

317

self.name, self.type)

438

"StateChanged", self.entry_group_state_changed))

439

log.debug("Adding Zeroconf service '%s' of type '%s' ...",

440

self.name, self.type)

318

441

self.group.AddService(

319

442

self.interface,

320

443

self.protocol,

324

447

dbus.UInt16(self.port),

325

448

avahi.string_array_to_txt_array(self.TXT))

326

449

self.group.Commit()

327

450

328

451

def entry_group_state_changed(self, state, error):

329

452

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

330

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

331

453

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

454

332

455

if state == avahi.ENTRY_GROUP_ESTABLISHED:

333

logger.debug("Zeroconf service established.")

456

log.debug("Zeroconf service established.")

334

457

elif state == avahi.ENTRY_GROUP_COLLISION:

335

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

458

log.info("Zeroconf service name collision.")

336

459

self.rename()

337

460

elif state == avahi.ENTRY_GROUP_FAILURE:

338

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

339

unicode(error))

340

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

341

.format(error))

342

461

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

462

str(error))

463

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

464

343

465

def cleanup(self):

344

466

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

345

467

if self.group is not None:

350

472

pass

351

473

self.group = None

352

474

self.remove()

353

475

354

476

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

355

477

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

356

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

357

bad_states = { avahi.SERVER_INVALID:

358

"Zeroconf server invalid",

359

avahi.SERVER_REGISTERING: None,

360

avahi.SERVER_COLLISION:

361

"Zeroconf server name collision",

362

avahi.SERVER_FAILURE:

363

"Zeroconf server failure" }

478

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

479

bad_states = {

480

avahi.SERVER_INVALID: "Zeroconf server invalid",

481

avahi.SERVER_REGISTERING: None,

482

avahi.SERVER_COLLISION: "Zeroconf server name collision",

483

avahi.SERVER_FAILURE: "Zeroconf server failure",

484

}

364

485

if state in bad_states:

365

486

if bad_states[state] is not None:

366

487

if error is None:

367

logger.error(bad_states[state])

488

log.error(bad_states[state])

368

489

else:

369

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

490

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

370

491

self.cleanup()

371

492

elif state == avahi.SERVER_RUNNING:

372

self.add()

493

try:

494

self.add()

495

except dbus.exceptions.DBusException as error:

496

if (error.get_dbus_name()

497

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

498

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

499

return self.rename(remove=False)

500

else:

501

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

502

self.cleanup()

503

os._exit(1)

373

504

else:

374

505

if error is None:

375

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

506

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

376

507

else:

377

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

378

508

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

509

379

510

def activate(self):

380

511

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

381

512

if self.server is None:

385

516

follow_name_owner_changes=True),

386

517

avahi.DBUS_INTERFACE_SERVER)

387

518

self.server.connect_to_signal("StateChanged",

388

self.server_state_changed)

519

self.server_state_changed)

389

520

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

390

521

391

522

392

523

class AvahiServiceToSyslog(AvahiService):

393

def rename(self):

524

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

394

525

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

395

ret = AvahiService.rename(self)

396

syslogger.setFormatter(logging.Formatter

397

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

398

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

399

.format(self.name)))

526

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

527

**kwargs)

528

syslogger.setFormatter(logging.Formatter(

529

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

530

.format(self.name)))

400

531

return ret

401

532

402

533

403

def timedelta_to_milliseconds(td):

404

"Convert a datetime.timedelta() to milliseconds"

405

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

406

+ (td.seconds * 1000)

407

+ (td.microseconds // 1000))

408

409

410

class Client(object):

534

# Pretend that we have a GnuTLS module

535

class gnutls:

536

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

537

538

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

539

if library is None:

540

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

541

_library = ctypes.cdll.LoadLibrary(library)

542

del library

543

544

# Unless otherwise indicated, the constants and types below are

545

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

546

547

# Constants

548

E_SUCCESS = 0

549

E_INTERRUPTED = -52

550

E_AGAIN = -28

551

CRT_OPENPGP = 2

552

CRT_RAWPK = 3

553

CLIENT = 2

554

SHUT_RDWR = 0

555

CRD_CERTIFICATE = 1

556

E_NO_CERTIFICATE_FOUND = -49

557

X509_FMT_DER = 0

558

NO_TICKETS = 1<<10

559

ENABLE_RAWPK = 1<<18

560

CTYPE_PEERS = 3

561

KEYID_USE_SHA256 = 1 # gnutls/x509.h

562

OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h

563

564

# Types

565

class _session_int(ctypes.Structure):

566

_fields_ = []

567

session_t = ctypes.POINTER(_session_int)

568

569

class certificate_credentials_st(ctypes.Structure):

570

_fields_ = []

571

certificate_credentials_t = ctypes.POINTER(

572

certificate_credentials_st)

573

certificate_type_t = ctypes.c_int

574

575

class datum_t(ctypes.Structure):

576

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

577

("size", ctypes.c_uint)]

578

579

class _openpgp_crt_int(ctypes.Structure):

580

_fields_ = []

581

openpgp_crt_t = ctypes.POINTER(_openpgp_crt_int)

582

openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h

583

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

584

credentials_type_t = ctypes.c_int

585

transport_ptr_t = ctypes.c_void_p

586

close_request_t = ctypes.c_int

587

588

# Exceptions

589

class Error(Exception):

590

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

591

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

592

# code is passed, convert it to a string with

593

# gnutls.strerror()

594

self.code = code

595

if message is None and code is not None:

596

message = gnutls.strerror(code).decode(

597

"utf-8", errors="replace")

598

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

599

message, *args)

600

601

class CertificateSecurityError(Error):

602

pass

603

604

class PointerTo:

605

def __init__(self, cls):

606

self.cls = cls

607

608

def from_param(self, obj):

609

if not isinstance(obj, self.cls):

610

raise TypeError("Not of type {}: {!r}"

611

.format(self.cls.__name__, obj))

612

return ctypes.byref(obj.from_param(obj))

613

614

class CastToVoidPointer:

615

def __init__(self, cls):

616

self.cls = cls

617

618

def from_param(self, obj):

619

if not isinstance(obj, self.cls):

620

raise TypeError("Not of type {}: {!r}"

621

.format(self.cls.__name__, obj))

622

return ctypes.cast(obj.from_param(obj), ctypes.c_void_p)

623

624

class With_from_param:

625

@classmethod

626

def from_param(cls, obj):

627

return obj._as_parameter_

628

629

# Classes

630

class Credentials(With_from_param):

631

def __init__(self):

632

self._as_parameter_ = gnutls.certificate_credentials_t()

633

gnutls.certificate_allocate_credentials(self)

634

self.type = gnutls.CRD_CERTIFICATE

635

636

def __del__(self):

637

gnutls.certificate_free_credentials(self)

638

639

class ClientSession(With_from_param):

640

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

641

self._as_parameter_ = gnutls.session_t()

642

gnutls_flags = gnutls.CLIENT

643

if gnutls.check_version(b"3.5.6"):

644

gnutls_flags |= gnutls.NO_TICKETS

645

if gnutls.has_rawpk:

646

gnutls_flags |= gnutls.ENABLE_RAWPK

647

gnutls.init(self, gnutls_flags)

648

del gnutls_flags

649

gnutls.set_default_priority(self)

650

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

651

gnutls.handshake_set_private_extensions(self, True)

652

self.socket = socket

653

if credentials is None:

654

credentials = gnutls.Credentials()

655

gnutls.credentials_set(self, credentials.type,

656

credentials)

657

self.credentials = credentials

658

659

def __del__(self):

660

gnutls.deinit(self)

661

662

def handshake(self):

663

return gnutls.handshake(self)

664

665

def send(self, data):

666

data = bytes(data)

667

data_len = len(data)

668

while data_len > 0:

669

data_len -= gnutls.record_send(self, data[-data_len:],

670

data_len)

671

672

def bye(self):

673

return gnutls.bye(self, gnutls.SHUT_RDWR)

674

675

# Error handling functions

676

def _error_code(result):

677

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

678

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

679

if result >= gnutls.E_SUCCESS:

680

return result

681

if result == gnutls.E_NO_CERTIFICATE_FOUND:

682

raise gnutls.CertificateSecurityError(code=result)

683

raise gnutls.Error(code=result)

684

685

def _retry_on_error(result, func, arguments,

686

_error_code=_error_code):

687

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

688

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

689

while result < gnutls.E_SUCCESS:

690

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

691

return _error_code(result)

692

result = func(*arguments)

693

return result

694

695

# Unless otherwise indicated, the function declarations below are

696

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

697

698

# Functions

699

priority_set_direct = _library.gnutls_priority_set_direct

700

priority_set_direct.argtypes = [ClientSession, ctypes.c_char_p,

701

ctypes.POINTER(ctypes.c_char_p)]

702

priority_set_direct.restype = _error_code

703

704

init = _library.gnutls_init

705

init.argtypes = [PointerTo(ClientSession), ctypes.c_int]

706

init.restype = _error_code

707

708

set_default_priority = _library.gnutls_set_default_priority

709

set_default_priority.argtypes = [ClientSession]

710

set_default_priority.restype = _error_code

711

712

record_send = _library.gnutls_record_send

713

record_send.argtypes = [ClientSession, ctypes.c_void_p,

714

ctypes.c_size_t]

715

record_send.restype = ctypes.c_ssize_t

716

record_send.errcheck = _retry_on_error

717

718

certificate_allocate_credentials = (

719

_library.gnutls_certificate_allocate_credentials)

720

certificate_allocate_credentials.argtypes = [

721

PointerTo(Credentials)]

722

certificate_allocate_credentials.restype = _error_code

723

724

certificate_free_credentials = (

725

_library.gnutls_certificate_free_credentials)

726

certificate_free_credentials.argtypes = [Credentials]

727

certificate_free_credentials.restype = None

728

729

handshake_set_private_extensions = (

730

_library.gnutls_handshake_set_private_extensions)

731

handshake_set_private_extensions.argtypes = [ClientSession,

732

ctypes.c_int]

733

handshake_set_private_extensions.restype = None

734

735

credentials_set = _library.gnutls_credentials_set

736

credentials_set.argtypes = [ClientSession, credentials_type_t,

737

CastToVoidPointer(Credentials)]

738

credentials_set.restype = _error_code

739

740

strerror = _library.gnutls_strerror

741

strerror.argtypes = [ctypes.c_int]

742

strerror.restype = ctypes.c_char_p

743

744

certificate_type_get = _library.gnutls_certificate_type_get

745

certificate_type_get.argtypes = [ClientSession]

746

certificate_type_get.restype = _error_code

747

748

certificate_get_peers = _library.gnutls_certificate_get_peers

749

certificate_get_peers.argtypes = [ClientSession,

750

ctypes.POINTER(ctypes.c_uint)]

751

certificate_get_peers.restype = ctypes.POINTER(datum_t)

752

753

global_set_log_level = _library.gnutls_global_set_log_level

754

global_set_log_level.argtypes = [ctypes.c_int]

755

global_set_log_level.restype = None

756

757

global_set_log_function = _library.gnutls_global_set_log_function

758

global_set_log_function.argtypes = [log_func]

759

global_set_log_function.restype = None

760

761

deinit = _library.gnutls_deinit

762

deinit.argtypes = [ClientSession]

763

deinit.restype = None

764

765

handshake = _library.gnutls_handshake

766

handshake.argtypes = [ClientSession]

767

handshake.restype = ctypes.c_int

768

handshake.errcheck = _retry_on_error

769

770

transport_set_ptr = _library.gnutls_transport_set_ptr

771

transport_set_ptr.argtypes = [ClientSession, transport_ptr_t]

772

transport_set_ptr.restype = None

773

774

bye = _library.gnutls_bye

775

bye.argtypes = [ClientSession, close_request_t]

776

bye.restype = ctypes.c_int

777

bye.errcheck = _retry_on_error

778

779

check_version = _library.gnutls_check_version

780

check_version.argtypes = [ctypes.c_char_p]

781

check_version.restype = ctypes.c_char_p

782

783

_need_version = b"3.3.0"

784

if check_version(_need_version) is None:

785

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

786

.format(_need_version))

787

788

_tls_rawpk_version = b"3.6.6"

789

has_rawpk = bool(check_version(_tls_rawpk_version))

790

791

if has_rawpk:

792

# Types

793

class pubkey_st(ctypes.Structure):

794

_fields = []

795

pubkey_t = ctypes.POINTER(pubkey_st)

796

797

x509_crt_fmt_t = ctypes.c_int

798

799

# All the function declarations below are from

800

# gnutls/abstract.h

801

pubkey_init = _library.gnutls_pubkey_init

802

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

803

pubkey_init.restype = _error_code

804

805

pubkey_import = _library.gnutls_pubkey_import

806

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

807

x509_crt_fmt_t]

808

pubkey_import.restype = _error_code

809

810

pubkey_get_key_id = _library.gnutls_pubkey_get_key_id

811

pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,

812

ctypes.POINTER(ctypes.c_ubyte),

813

ctypes.POINTER(ctypes.c_size_t)]

814

pubkey_get_key_id.restype = _error_code

815

816

pubkey_deinit = _library.gnutls_pubkey_deinit

817

pubkey_deinit.argtypes = [pubkey_t]

818

pubkey_deinit.restype = None

819

else:

820

# All the function declarations below are from

821

# gnutls/openpgp.h

822

823

openpgp_crt_init = _library.gnutls_openpgp_crt_init

824

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

825

openpgp_crt_init.restype = _error_code

826

827

openpgp_crt_import = _library.gnutls_openpgp_crt_import

828

openpgp_crt_import.argtypes = [openpgp_crt_t,

829

ctypes.POINTER(datum_t),

830

openpgp_crt_fmt_t]

831

openpgp_crt_import.restype = _error_code

832

833

openpgp_crt_verify_self = \

834

_library.gnutls_openpgp_crt_verify_self

835

openpgp_crt_verify_self.argtypes = [

836

openpgp_crt_t,

837

ctypes.c_uint,

838

ctypes.POINTER(ctypes.c_uint),

839

]

840

openpgp_crt_verify_self.restype = _error_code

841

842

openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit

843

openpgp_crt_deinit.argtypes = [openpgp_crt_t]

844

openpgp_crt_deinit.restype = None

845

846

openpgp_crt_get_fingerprint = (

847

_library.gnutls_openpgp_crt_get_fingerprint)

848

openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,

849

ctypes.c_void_p,

850

ctypes.POINTER(

851

ctypes.c_size_t)]

852

openpgp_crt_get_fingerprint.restype = _error_code

853

854

if check_version(b"3.6.4"):

855

certificate_type_get2 = _library.gnutls_certificate_type_get2

856

certificate_type_get2.argtypes = [ClientSession, ctypes.c_int]

857

certificate_type_get2.restype = _error_code

858

859

# Remove non-public functions

860

del _error_code, _retry_on_error

861

862

863

def call_pipe(connection, # : multiprocessing.Connection

864

func, *args, **kwargs):

865

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

866

867

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

868

return value on the provided multiprocessing.Connection.

869

"""

870

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

871

connection.close()

872

873

874

class Client:

411

875

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

412

876

413

877

Attributes:

414

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

878

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

415

879

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

416

880

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

417

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

418

to see if the client lives.

419

'None' if no process is running.

420

checker_callback_tag: a gobject event source tag, or None

881

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

882

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

883

running.

884

checker_callback_tag: a GLib event source tag, or None

421

885

checker_command: string; External command which is run to check

422

886

if client lives. %() expansions are done at

423

887

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

424

888

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

425

checker_initiator_tag: a gobject event source tag, or None

889

checker_initiator_tag: a GLib event source tag, or None

426

890

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

427

891

client_structure: Object describing what attributes a client has

428

892

and is used for storing the client at exit

429

893

current_checker_command: string; current running checker_command

430

disable_initiator_tag: a gobject event source tag, or None

894

disable_initiator_tag: a GLib event source tag, or None

431

895

enabled: bool()

432

896

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

433

uniquely identify the client

897

uniquely identify an OpenPGP client

898

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

899

a client using raw public keys

434

900

host: string; available for use by the checker command

435

901

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

436

902

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

438

904

last_checker_status: integer between 0 and 255 reflecting exit

439

905

status of last checker. -1 reflects crashed

440

906

checker, -2 means no checker completed yet.

907

last_checker_signal: The signal which killed the last checker, if

908

last_checker_status is -1

441

909

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

442

910

443

911

D-Bus identifiers

450

918

disabled, or None

451

919

server_settings: The server_settings dict from main()

452

920

"""

453

921

454

922

runtime_expansions = ("approval_delay", "approval_duration",

455

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

923

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

456

924

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

457

925

"last_approval_request", "last_checked_ok",

458

926

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

459

client_defaults = { "timeout": "PT5M",

460

"extended_timeout": "PT15M",

461

"interval": "PT2M",

462

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

463

"host": "",

464

"approval_delay": "PT0S",

465

"approval_duration": "PT1S",

466

"approved_by_default": "True",

467

"enabled": "True",

468

}

469

470

def timeout_milliseconds(self):

471

"Return the 'timeout' attribute in milliseconds"

472

return timedelta_to_milliseconds(self.timeout)

473

474

def extended_timeout_milliseconds(self):

475

"Return the 'extended_timeout' attribute in milliseconds"

476

return timedelta_to_milliseconds(self.extended_timeout)

477

478

def interval_milliseconds(self):

479

"Return the 'interval' attribute in milliseconds"

480

return timedelta_to_milliseconds(self.interval)

481

482

def approval_delay_milliseconds(self):

483

return timedelta_to_milliseconds(self.approval_delay)

484

927

client_defaults = {

928

"timeout": "PT5M",

929

"extended_timeout": "PT15M",

930

"interval": "PT2M",

931

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

932

"host": "",

933

"approval_delay": "PT0S",

934

"approval_duration": "PT1S",

935

"approved_by_default": "True",

936

"enabled": "True",

937

}

938

485

939

@staticmethod

486

940

def config_parser(config):

487

941

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

494

948

for client_name in config.sections():

495

949

section = dict(config.items(client_name))

496

950

client = settings[client_name] = {}

497

951

498

952

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

499

953

# Reformat values from string types to Python types

500

954

client["approved_by_default"] = config.getboolean(

501

955

client_name, "approved_by_default")

502

956

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

503

957

"enabled")

504

958

959

# Uppercase and remove spaces from key_id and fingerprint

960

# for later comparison purposes with return value from the

961

# key_id() and fingerprint() functions

962

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

963

.replace(" ", ""))

505

964

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

506

965

.replace(" ", ""))

507

966

if "secret" in section:

508

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

967

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

968

.encode("utf-8"),

969

"base64")

509

970

elif "secfile" in section:

510

971

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

511

972

(section["secfile"])),

512

973

"rb") as secfile:

513

974

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

514

975

else:

515

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

976

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

516

977

.format(section))

517

978

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

518

979

client["extended_timeout"] = string_to_delta(

526

987

client["last_approval_request"] = None

527

988

client["last_checked_ok"] = None

528

989

client["last_checker_status"] = -2

529

990

530

991

return settings

531

532

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

992

993

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

533

994

self.name = name

534

995

if server_settings is None:

535

996

server_settings = {}

536

997

self.server_settings = server_settings

537

998

# adding all client settings

538

for setting, value in settings.iteritems():

999

for setting, value in settings.items():

539

1000

setattr(self, setting, value)

540

1001

541

1002

if self.enabled:

542

1003

if not hasattr(self, "last_enabled"):

543

1004

self.last_enabled = datetime.datetime.utcnow()

547

1008

else:

548

1009

self.last_enabled = None

549

1010

self.expires = None

550

551

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

552

# Uppercase and remove spaces from fingerprint for later

553

# comparison purposes with return value from the fingerprint()

554

# function

555

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

1011

1012

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

1013

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

1014

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

556

1015

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

557

1016

datetime.datetime.utcnow())

558

1017

559

1018

# attributes specific for this server instance

560

1019

self.checker = None

561

1020

self.checker_initiator_tag = None

564

1023

self.current_checker_command = None

565

1024

self.approved = None

566

1025

self.approvals_pending = 0

567

self.changedstate = (multiprocessing_manager

568

.Condition(multiprocessing_manager

569

.Lock()))

570

self.client_structure = [attr for attr in

571

self.__dict__.iterkeys()

1026

self.changedstate = multiprocessing_manager.Condition(

1027

multiprocessing_manager.Lock())

1028

self.client_structure = [attr

1029

for attr in self.__dict__.keys()

572

1030

if not attr.startswith("_")]

573

1031

self.client_structure.append("client_structure")

574

575

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

576

lambda obj:

577

isinstance(obj,

578

property)):

1032

1033

for name, t in inspect.getmembers(

1034

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

579

1035

if not name.startswith("_"):

580

1036

self.client_structure.append(name)

581

1037

582

1038

# Send notice to process children that client state has changed

583

1039

def send_changedstate(self):

584

1040

with self.changedstate:

585

1041

self.changedstate.notify_all()

586

1042

587

1043

def enable(self):

588

1044

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

589

1045

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

594

1050

self.last_enabled = datetime.datetime.utcnow()

595

1051

self.init_checker()

596

1052

self.send_changedstate()

597

1053

598

1054

def disable(self, quiet=True):

599

1055

"""Disable this client."""

600

1056

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

601

1057

return False

602

1058

if not quiet:

603

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

1059

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

604

1060

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

605

gobject.source_remove(self.disable_initiator_tag)

1061

GLib.source_remove(self.disable_initiator_tag)

606

1062

self.disable_initiator_tag = None

607

1063

self.expires = None

608

1064

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

609

gobject.source_remove(self.checker_initiator_tag)

1065

GLib.source_remove(self.checker_initiator_tag)

610

1066

self.checker_initiator_tag = None

611

1067

self.stop_checker()

612

1068

self.enabled = False

613

1069

if not quiet:

614

1070

self.send_changedstate()

615

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

1071

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

616

1072

return False

617

1073

618

1074

def __del__(self):

619

1075

self.disable()

620

1076

621

1077

def init_checker(self):

622

1078

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

623

1079

# and every interval from then on.

624

1080

if self.checker_initiator_tag is not None:

625

gobject.source_remove(self.checker_initiator_tag)

626

self.checker_initiator_tag = (gobject.timeout_add

627

(self.interval_milliseconds(),

628

self.start_checker))

1081

GLib.source_remove(self.checker_initiator_tag)

1082

self.checker_initiator_tag = GLib.timeout_add(

1083

random.randrange(int(self.interval.total_seconds() * 1000

1084

+ 1)),

1085

self.start_checker)

629

1086

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

630

1087

if self.disable_initiator_tag is not None:

631

gobject.source_remove(self.disable_initiator_tag)

632

self.disable_initiator_tag = (gobject.timeout_add

633

(self.timeout_milliseconds(),

634

self.disable))

1088

GLib.source_remove(self.disable_initiator_tag)

1089

self.disable_initiator_tag = GLib.timeout_add(

1090

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

635

1091

# Also start a new checker *right now*.

636

1092

self.start_checker()

637

638

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

1093

1094

def checker_callback(self, source, condition, connection,

1095

command):

639

1096

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

1097

# Read return code from connection (see call_pipe)

1098

returncode = connection.recv()

1099

connection.close()

1100

if self.checker is not None:

1101

self.checker.join()

640

1102

self.checker_callback_tag = None

641

1103

self.checker = None

642

if os.WIFEXITED(condition):

643

self.last_checker_status = os.WEXITSTATUS(condition)

1104

1105

if returncode >= 0:

1106

self.last_checker_status = returncode

1107

self.last_checker_signal = None

644

1108

if self.last_checker_status == 0:

645

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

646

vars(self))

1109

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

647

1110

self.checked_ok()

648

1111

else:

649

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

650

vars(self))

1112

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

651

1113

else:

652

1114

self.last_checker_status = -1

653

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

654

vars(self))

655

1115

self.last_checker_signal = -returncode

1116

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

1117

return False

1118

656

1119

def checked_ok(self):

657

1120

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

658

1121

self.last_checked_ok = datetime.datetime.utcnow()

659

1122

self.last_checker_status = 0

1123

self.last_checker_signal = None

660

1124

self.bump_timeout()

661

1125

662

1126

def bump_timeout(self, timeout=None):

663

1127

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

664

1128

if timeout is None:

665

1129

timeout = self.timeout

666

1130

if self.disable_initiator_tag is not None:

667

gobject.source_remove(self.disable_initiator_tag)

1131

GLib.source_remove(self.disable_initiator_tag)

668

1132

self.disable_initiator_tag = None

669

1133

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

670

self.disable_initiator_tag = (gobject.timeout_add

671

(timedelta_to_milliseconds

672

(timeout), self.disable))

1134

self.disable_initiator_tag = GLib.timeout_add(

1135

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

673

1136

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

674

1137

675

1138

def need_approval(self):

676

1139

self.last_approval_request = datetime.datetime.utcnow()

677

1140

678

1141

def start_checker(self):

679

1142

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

680

1143

681

1144

If a checker already exists, leave it running and do

682

1145

nothing."""

683

1146

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

688

1151

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

689

1152

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

690

1153

# should be.

691

692

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

693

try:

694

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

695

except AttributeError:

696

pass

697

except OSError as error:

698

if error.errno != errno.ECHILD:

699

raise

700

else:

701

if pid:

702

logger.warning("Checker was a zombie")

703

gobject.source_remove(self.checker_callback_tag)

704

self.checker_callback(pid, status,

705

self.current_checker_command)

1154

1155

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

1156

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

1157

self.checker.join()

1158

self.checker = None

706

1159

# Start a new checker if needed

707

1160

if self.checker is None:

708

1161

# Escape attributes for the shell

709

escaped_attrs = dict(

710

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

711

for attr in

712

self.runtime_expansions)

1162

escaped_attrs = {

1163

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

1164

for attr in self.runtime_expansions}

713

1165

try:

714

1166

command = self.checker_command % escaped_attrs

715

1167

except TypeError as error:

716

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

717

self.checker_command, exc_info=error)

718

return True # Try again later

1168

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

1169

self.checker_command, exc_info=error)

1170

return True # Try again later

719

1171

self.current_checker_command = command

720

try:

721

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

722

command, self.name)

723

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

724

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

725

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

726

# always replaced by /dev/null.)

727

# The exception is when not debugging but nevertheless

728

# running in the foreground; use the previously

729

# created wnull.

730

popen_args = {}

731

if (not self.server_settings["debug"]

732

and self.server_settings["foreground"]):

733

popen_args.update({"stdout": wnull,

734

"stderr": wnull })

735

self.checker = subprocess.Popen(command,

736

close_fds=True,

737

shell=True, cwd="/",

738

**popen_args)

739

except OSError as error:

740

logger.error("Failed to start subprocess",

741

exc_info=error)

742

return True

743

self.checker_callback_tag = (gobject.child_watch_add

744

(self.checker.pid,

745

self.checker_callback,

746

data=command))

747

# The checker may have completed before the gobject

748

# watch was added. Check for this.

749

try:

750

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

751

except OSError as error:

752

if error.errno == errno.ECHILD:

753

# This should never happen

754

logger.error("Child process vanished",

755

exc_info=error)

756

return True

757

raise

758

if pid:

759

gobject.source_remove(self.checker_callback_tag)

760

self.checker_callback(pid, status, command)

761

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

1172

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

1173

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

1174

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

1175

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

1176

# always replaced by /dev/null.)

1177

# The exception is when not debugging but nevertheless

1178

# running in the foreground; use the previously

1179

# created wnull.

1180

popen_args = {"close_fds": True,

1181

"shell": True,

1182

"cwd": "/"}

1183

if (not self.server_settings["debug"]

1184

and self.server_settings["foreground"]):

1185

popen_args.update({"stdout": wnull,

1186

"stderr": wnull})

1187

pipe = multiprocessing.Pipe(duplex=False)

1188

self.checker = multiprocessing.Process(

1189

target=call_pipe,

1190

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

1191

kwargs=popen_args)

1192

self.checker.start()

1193

self.checker_callback_tag = GLib.io_add_watch(

1194

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

1195

GLib.PRIORITY_DEFAULT, GLib.IO_IN,

1196

self.checker_callback, pipe[0], command)

1197

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

762

1198

return True

763

1199

764

1200

def stop_checker(self):

765

1201

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

766

1202

if self.checker_callback_tag:

767

gobject.source_remove(self.checker_callback_tag)

1203

GLib.source_remove(self.checker_callback_tag)

768

1204

self.checker_callback_tag = None

769

1205

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

770

1206

return

771

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

772

try:

773

self.checker.terminate()

774

#time.sleep(0.5)

775

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

776

# self.checker.kill()

777

except OSError as error:

778

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

779

raise

1207

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

1208

self.checker.terminate()

780

1209

self.checker = None

781

1210

782

1211

783

def dbus_service_property(dbus_interface, signature="v",

784

access="readwrite", byte_arrays=False):

1212

def dbus_service_property(dbus_interface,

1213

signature="v",

1214

access="readwrite",

1215

byte_arrays=False):

785

1216

"""Decorators for marking methods of a DBusObjectWithProperties to

786

1217

become properties on the D-Bus.

787

1218

788

1219

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

789

1220

and with one argument by "Set".

790

1221

791

1222

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

792

1223

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

793

1224

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

796

1227

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

797

1228

if byte_arrays and signature != "ay":

798

1229

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

799

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

1230

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

1231

800

1232

def decorator(func):

801

1233

func._dbus_is_property = True

802

1234

func._dbus_interface = dbus_interface

805

1237

func._dbus_name = func.__name__

806

1238

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

807

1239

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

808

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

1240

func._dbus_get_args_options = {"byte_arrays": byte_arrays}

809

1241

return func

1242

810

1243

return decorator

811

1244

812

1245

813

1246

def dbus_interface_annotations(dbus_interface):

814

1247

"""Decorator for marking functions returning interface annotations

815

1248

816

1249

Usage:

817

1250

818

1251

@dbus_interface_annotations("org.example.Interface")

819

1252

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

820

1253

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

821

1254

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

822

1255

"false"}

823

1256

"""

1257

824

1258

def decorator(func):

825

1259

func._dbus_is_interface = True

826

1260

func._dbus_interface = dbus_interface

827

1261

func._dbus_name = dbus_interface

828

1262

return func

1263

829

1264

return decorator

830

1265

831

1266

832

1267

def dbus_annotations(annotations):

833

1268

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

834

1269

Usage:

835

1270

1271

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

1272

"org.freedesktop.DBus.Property."

1273

"EmitsChangedSignal": "false"})

836

1274

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

837

1275

access="r")

838

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

839

"org.freedesktop.DBus.Property."

840

"EmitsChangedSignal": "false"})

841

1276

def Property_dbus_property(self):

842

1277

return dbus.Boolean(False)

1278

1279

See also the DBusObjectWithAnnotations class.

843

1280

"""

1281

844

1282

def decorator(func):

845

1283

func._dbus_annotations = annotations

846

1284

return func

1285

847

1286

return decorator

848

1287

849

1288

850

1289

class DBusPropertyException(dbus.exceptions.DBusException):

851

1290

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

852

1291

"""

853

def __unicode__(self):

854

return unicode(str(self))

1292

pass

855

1293

856

1294

857

1295

class DBusPropertyAccessException(DBusPropertyException):

866

1304

pass

867

1305

868

1306

869

class DBusObjectWithProperties(dbus.service.Object):

870

"""A D-Bus object with properties.

871

872

Classes inheriting from this can use the dbus_service_property

873

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

874

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

1307

class DBusObjectWithAnnotations(dbus.service.Object):

1308

"""A D-Bus object with annotations.

1309

1310

Classes inheriting from this can use the dbus_annotations

1311

decorator to add annotations to methods or signals.

875

1312

"""

876

1313

877

1314

@staticmethod

878

1315

def _is_dbus_thing(thing):

879

1316

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

880

1317

881

1318

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

882

1319

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

883

1320

"""

884

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

1321

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

885

1322

False)

886

1323

887

1324

def _get_all_dbus_things(self, thing):

888

1325

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

889

1326

"""

890

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

891

name),

1327

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

892

1328

athing.__get__(self))

893

1329

for cls in self.__class__.__mro__

894

1330

for name, athing in

895

inspect.getmembers(cls,

896

self._is_dbus_thing(thing)))

897

1331

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

1332

1333

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1334

out_signature="s",

1335

path_keyword="object_path",

1336

connection_keyword="connection")

1337

def Introspect(self, object_path, connection):

1338

"""Overloading of standard D-Bus method.

1339

1340

Inserts annotation tags on methods and signals.

1341

"""

1342

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

1343

connection)

1344

try:

1345

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

1346

1347

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

1348

# Add annotation tags

1349

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

1350

for tag in if_tag.getElementsByTagName(typ):

1351

annots = dict()

1352

for name, prop in (self.

1353

_get_all_dbus_things(typ)):

1354

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

1355

and prop._dbus_interface

1356

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

1357

annots.update(getattr(

1358

prop, "_dbus_annotations", {}))

1359

for name, value in annots.items():

1360

ann_tag = document.createElement(

1361

"annotation")

1362

ann_tag.setAttribute("name", name)

1363

ann_tag.setAttribute("value", value)

1364

tag.appendChild(ann_tag)

1365

# Add interface annotation tags

1366

for annotation, value in dict(

1367

itertools.chain.from_iterable(

1368

annotations().items()

1369

for name, annotations

1370

in self._get_all_dbus_things("interface")

1371

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

1372

)).items():

1373

ann_tag = document.createElement("annotation")

1374

ann_tag.setAttribute("name", annotation)

1375

ann_tag.setAttribute("value", value)

1376

if_tag.appendChild(ann_tag)

1377

# Fix argument name for the Introspect method itself

1378

if (if_tag.getAttribute("name")

1379

== dbus.INTROSPECTABLE_IFACE):

1380

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

1381

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

1382

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

1383

if (arg.getAttribute("direction")

1384

== "out"):

1385

arg.setAttribute("name",

1386

"xml_data")

1387

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

1388

document.unlink()

1389

except (AttributeError, xml.dom.DOMException,

1390

xml.parsers.expat.ExpatError) as error:

1391

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

1392

exc_info=error)

1393

return xmlstring

1394

1395

1396

class DBusObjectWithProperties(DBusObjectWithAnnotations):

1397

"""A D-Bus object with properties.

1398

1399

Classes inheriting from this can use the dbus_service_property

1400

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

1401

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

1402

"""

1403

898

1404

def _get_dbus_property(self, interface_name, property_name):

899

1405

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

900

1406

property with the specified name and interface.

901

1407

"""

902

for cls in self.__class__.__mro__:

903

for name, value in (inspect.getmembers

904

(cls,

905

self._is_dbus_thing("property"))):

1408

for cls in self.__class__.__mro__:

1409

for name, value in inspect.getmembers(

1410

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

906

1411

if (value._dbus_name == property_name

907

1412

and value._dbus_interface == interface_name):

908

1413

return value.__get__(self)

909

1414

910

1415

# No such property

911

raise DBusPropertyNotFound(self.dbus_object_path + ":"

912

+ interface_name + "."

913

+ property_name)

914

915

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

1416

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

1417

self.dbus_object_path, interface_name, property_name))

1418

1419

@classmethod

1420

def _get_all_interface_names(cls):

1421

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

1422

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

1423

"_dbus_interface", None)

1424

for x in (inspect.getmro(cls))

1425

for attr in dir(x))

1426

if name is not None)

1427

1428

@dbus.service.method(dbus.PROPERTIES_IFACE,

1429

in_signature="ss",

916

1430

out_signature="v")

917

1431

def Get(self, interface_name, property_name):

918

1432

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

924

1438

if not hasattr(value, "variant_level"):

925

1439

return value

926

1440

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

927

1441

928

1442

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

929

1443

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

930

1444

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

937

1451

# signatures other than "ay".

938

1452

if prop._dbus_signature != "ay":

939

1453

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

940

"'ay' signature {0!r}"

1454

"'ay' signature {!r}"

941

1455

.format(prop._dbus_signature))

942

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

943

for byte in value))

1456

value = dbus.ByteArray(bytes(value))

944

1457

prop(value)

945

946

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

1458

1459

@dbus.service.method(dbus.PROPERTIES_IFACE,

1460

in_signature="s",

947

1461

out_signature="a{sv}")

948

1462

def GetAll(self, interface_name):

949

1463

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

950

1464

standard.

951

1465

952

1466

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

953

1467

"""

954

1468

properties = {}

964

1478

if not hasattr(value, "variant_level"):

965

1479

properties[name] = value

966

1480

continue

967

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

968

value.variant_level+1)

1481

properties[name] = type(value)(

1482

value, variant_level=value.variant_level + 1)

969

1483

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

970

1484

1485

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

1486

def PropertiesChanged(self, interface_name, changed_properties,

1487

invalidated_properties):

1488

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

1489

standard.

1490

"""

1491

pass

1492

971

1493

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

972

1494

out_signature="s",

973

path_keyword='object_path',

974

connection_keyword='connection')

1495

path_keyword="object_path",

1496

connection_keyword="connection")

975

1497

def Introspect(self, object_path, connection):

976

1498

"""Overloading of standard D-Bus method.

977

1499

978

1500

Inserts property tags and interface annotation tags.

979

1501

"""

980

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

981

connection)

1502

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1503

object_path,

1504

connection)

982

1505

try:

983

1506

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

1507

984

1508

def make_tag(document, name, prop):

985

1509

e = document.createElement("property")

986

1510

e.setAttribute("name", name)

987

1511

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

988

1512

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

989

1513

return e

1514

990

1515

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

991

1516

# Add property tags

992

1517

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

995

1520

if prop._dbus_interface

996

1521

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

997

1522

if_tag.appendChild(tag)

998

# Add annotation tags

999

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

1000

for tag in if_tag.getElementsByTagName(typ):

1001

annots = dict()

1002

for name, prop in (self.

1003

_get_all_dbus_things(typ)):

1004

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

1005

and prop._dbus_interface

1006

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

1007

annots.update(getattr

1008

(prop,

1009

"_dbus_annotations",

1010

{}))

1011

for name, value in annots.iteritems():

1012

ann_tag = document.createElement(

1013

"annotation")

1014

ann_tag.setAttribute("name", name)

1015

ann_tag.setAttribute("value", value)

1016

tag.appendChild(ann_tag)

1017

# Add interface annotation tags

1018

for annotation, value in dict(

1019

itertools.chain.from_iterable(

1020

annotations().iteritems()

1021

for name, annotations in

1022

self._get_all_dbus_things("interface")

1023

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

1024

)).iteritems():

1025

ann_tag = document.createElement("annotation")

1026

ann_tag.setAttribute("name", annotation)

1027

ann_tag.setAttribute("value", value)

1028

if_tag.appendChild(ann_tag)

1523

# Add annotation tags for properties

1524

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

1525

annots = dict()

1526

for name, prop in self._get_all_dbus_things(

1527

"property"):

1528

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

1529

and prop._dbus_interface

1530

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

1531

annots.update(getattr(

1532

prop, "_dbus_annotations", {}))

1533

for name, value in annots.items():

1534

ann_tag = document.createElement(

1535

"annotation")

1536

ann_tag.setAttribute("name", name)

1537

ann_tag.setAttribute("value", value)

1538

tag.appendChild(ann_tag)

1029

1539

# Add the names to the return values for the

1030

1540

# "org.freedesktop.DBus.Properties" methods

1031

1541

if (if_tag.getAttribute("name")

1045

1555

document.unlink()

1046

1556

except (AttributeError, xml.dom.DOMException,

1047

1557

xml.parsers.expat.ExpatError) as error:

1048

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

1049

exc_info=error)

1558

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

1559

exc_info=error)

1560

return xmlstring

1561

1562

1563

try:

1564

dbus.OBJECT_MANAGER_IFACE

1565

except AttributeError:

1566

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

1567

1568

1569

class DBusObjectWithObjectManager(DBusObjectWithAnnotations):

1570

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

1571

1572

Classes inheriting from this exposes the standard

1573

GetManagedObjects call and the InterfacesAdded and

1574

InterfacesRemoved signals on the standard

1575

"org.freedesktop.DBus.ObjectManager" interface.

1576

1577

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

1578

manually.

1579

"""

1580

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

1581

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

1582

def GetManagedObjects(self):

1583

"""This function must be overridden"""

1584

raise NotImplementedError()

1585

1586

@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,

1587

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

1588

def InterfacesAdded(self, object_path, interfaces_and_properties):

1589

pass

1590

1591

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

1592

def InterfacesRemoved(self, object_path, interfaces):

1593

pass

1594

1595

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1596

out_signature="s",

1597

path_keyword="object_path",

1598

connection_keyword="connection")

1599

def Introspect(self, object_path, connection):

1600

"""Overloading of standard D-Bus method.

1601

1602

Override return argument name of GetManagedObjects to be

1603

"objpath_interfaces_and_properties"

1604

"""

1605

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1606

object_path,

1607

connection)

1608

try:

1609

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

1610

1611

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

1612

# Fix argument name for the GetManagedObjects method

1613

if (if_tag.getAttribute("name")

1614

== dbus.OBJECT_MANAGER_IFACE):

1615

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

1616

if (cn.getAttribute("name")

1617

== "GetManagedObjects"):

1618

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

1619

if (arg.getAttribute("direction")

1620

== "out"):

1621

arg.setAttribute(

1622

"name",

1623

"objpath_interfaces"

1624

"_and_properties")

1625

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

1626

document.unlink()

1627

except (AttributeError, xml.dom.DOMException,

1628

xml.parsers.expat.ExpatError) as error:

1629

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

1630

exc_info=error)

1050

1631

return xmlstring

1051

1632

1052

1633

1053

1634

def datetime_to_dbus(dt, variant_level=0):

1054

1635

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

1055

1636

if dt is None:

1056

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

1057

return dbus.String(dt.isoformat(),

1058

variant_level=variant_level)

1637

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

1638

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

1059

1639

1060

1640

1061

1641

def alternate_dbus_interfaces(alt_interface_names, deprecate=True):

1063

1643

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

1064

1644

interface names according to the "alt_interface_names" mapping.

1065

1645

Usage:

1066

1646

1067

1647

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

1068

1648

"net.example.AlternateInterface"})

1069

1649

class SampleDBusObject(dbus.service.Object):

1070

1650

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

1071

1651

def SampleDBusMethod():

1072

1652

pass

1073

1653

1074

1654

The above "SampleDBusMethod" on "SampleDBusObject" will be

1075

1655

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

1076

1656

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

1077

1657

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

1078

1658

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

1079

1659

1080

1660

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

1081

1661

(from DBusObjectWithProperties) and interfaces (from the

1082

1662

dbus_interface_annotations decorator).

1083

1663

"""

1664

1084

1665

def wrapper(cls):

1085

1666

for orig_interface_name, alt_interface_name in (

1086

alt_interface_names.iteritems()):

1667

alt_interface_names.items()):

1087

1668

attr = {}

1088

1669

interface_names = set()

1089

1670

# Go though all attributes of the class

1091

1672

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

1092

1673

# with the wrong interface name

1093

1674

if (not hasattr(attribute, "_dbus_interface")

1094

or not attribute._dbus_interface

1095

.startswith(orig_interface_name)):

1675

or not attribute._dbus_interface.startswith(

1676

orig_interface_name)):

1096

1677

continue

1097

1678

# Create an alternate D-Bus interface name based on

1098

1679

# the current name

1099

alt_interface = (attribute._dbus_interface

1100

.replace(orig_interface_name,

1101

alt_interface_name))

1680

alt_interface = attribute._dbus_interface.replace(

1681

orig_interface_name, alt_interface_name)

1102

1682

interface_names.add(alt_interface)

1103

1683

# Is this a D-Bus signal?

1104

1684

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

1105

1685

# Extract the original non-method undecorated

1106

1686

# function by black magic

1107

nonmethod_func = (dict(

1687

if sys.version_info.major == 2:

1688

nonmethod_func = (dict(

1108

1689

zip(attribute.func_code.co_freevars,

1109

attribute.__closure__))["func"]

1110

.cell_contents)

1690

attribute.__closure__))

1691

["func"].cell_contents)

1692

else:

1693

nonmethod_func = (dict(

1694

zip(attribute.__code__.co_freevars,

1695

attribute.__closure__))

1696

["func"].cell_contents)

1111

1697

# Create a new, but exactly alike, function

1112

1698

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

1113

1699

# with the alternate D-Bus interface name

1114

new_function = (dbus.service.signal

1115

(alt_interface,

1116

attribute._dbus_signature)

1117

(types.FunctionType(

1118

nonmethod_func.func_code,

1119

nonmethod_func.func_globals,

1120

nonmethod_func.func_name,

1121

nonmethod_func.func_defaults,

1122

nonmethod_func.func_closure)))

1700

new_function = copy_function(nonmethod_func)

1701

new_function = (dbus.service.signal(

1702

alt_interface,

1703

attribute._dbus_signature)(new_function))

1123

1704

# Copy annotations, if any

1124

1705

try:

1125

new_function._dbus_annotations = (

1126

dict(attribute._dbus_annotations))

1706

new_function._dbus_annotations = dict(

1707

attribute._dbus_annotations)

1127

1708

except AttributeError:

1128

1709

pass

1710

1129

1711

# Define a creator of a function to call both the

1130

1712

# original and alternate functions, so both the

1131

1713

# original and alternate signals gets sent when

1134

1716

"""This function is a scope container to pass

1135

1717

func1 and func2 to the "call_both" function

1136

1718

outside of its arguments"""

1719

1720

@functools.wraps(func2)

1137

1721

def call_both(*args, **kwargs):

1138

1722

"""This function will emit two D-Bus

1139

1723

signals by calling func1 and func2"""

1140

1724

func1(*args, **kwargs)

1141

1725

func2(*args, **kwargs)

1726

# Make wrapper function look like a D-Bus

1727

# signal

1728

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

1729

if name.startswith("_dbus_"):

1730

setattr(call_both, name, attr)

1731

1142

1732

return call_both

1143

1733

# Create the "call_both" function and add it to

1144

1734

# the class

1149

1739

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

1150

1740

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

1151

1741

# to the class.

1152

attr[attrname] = (dbus.service.method

1153

(alt_interface,

1154

attribute._dbus_in_signature,

1155

attribute._dbus_out_signature)

1156

(types.FunctionType

1157

(attribute.func_code,

1158

attribute.func_globals,

1159

attribute.func_name,

1160

attribute.func_defaults,

1161

attribute.func_closure)))

1742

attr[attrname] = (

1743

dbus.service.method(

1744

alt_interface,

1745

attribute._dbus_in_signature,

1746

attribute._dbus_out_signature)

1747

(copy_function(attribute)))

1162

1748

# Copy annotations, if any

1163

1749

try:

1164

attr[attrname]._dbus_annotations = (

1165

dict(attribute._dbus_annotations))

1750

attr[attrname]._dbus_annotations = dict(

1751

attribute._dbus_annotations)

1166

1752

except AttributeError:

1167

1753

pass

1168

1754

# Is this a D-Bus property?

1171

1757

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

1172

1758

# property with the alternate D-Bus interface

1173

1759

# name. Add it to the class.

1174

attr[attrname] = (dbus_service_property

1175

(alt_interface,

1176

attribute._dbus_signature,

1177

attribute._dbus_access,

1178

attribute

1179

._dbus_get_args_options

1180

["byte_arrays"])

1181

(types.FunctionType

1182

(attribute.func_code,

1183

attribute.func_globals,

1184

attribute.func_name,

1185

attribute.func_defaults,

1186

attribute.func_closure)))

1760

attr[attrname] = (dbus_service_property(

1761

alt_interface, attribute._dbus_signature,

1762

attribute._dbus_access,

1763

attribute._dbus_get_args_options

1764

["byte_arrays"])

1765

(copy_function(attribute)))

1187

1766

# Copy annotations, if any

1188

1767

try:

1189

attr[attrname]._dbus_annotations = (

1190

dict(attribute._dbus_annotations))

1768

attr[attrname]._dbus_annotations = dict(

1769

attribute._dbus_annotations)

1191

1770

except AttributeError:

1192

1771

pass

1193

1772

# Is this a D-Bus interface?

1196

1775

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

1197

1776

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

1198

1777

# to the class.

1199

attr[attrname] = (dbus_interface_annotations

1200

(alt_interface)

1201

(types.FunctionType

1202

(attribute.func_code,

1203

attribute.func_globals,

1204

attribute.func_name,

1205

attribute.func_defaults,

1206

attribute.func_closure)))

1778

attr[attrname] = (

1779

dbus_interface_annotations(alt_interface)

1780

(copy_function(attribute)))

1207

1781

if deprecate:

1208

1782

# Deprecate all alternate interfaces

1209

iname="_AlternateDBusNames_interface_annotation{0}"

1783

iname = "_AlternateDBusNames_interface_annotation{}"

1210

1784

for interface_name in interface_names:

1785

1211

1786

@dbus_interface_annotations(interface_name)

1212

1787

def func(self):

1213

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

1214

"true" }

1788

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

1789

"true"}

1215

1790

# Find an unused name

1216

1791

for aname in (iname.format(i)

1217

1792

for i in itertools.count()):

1221

1796

if interface_names:

1222

1797

# Replace the class with a new subclass of it with

1223

1798

# methods, signals, etc. as created above.

1224

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

1225

(cls,), attr)

1799

if sys.version_info.major == 2:

1800

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

1801

(cls, ), attr)

1802

else:

1803

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

1804

(cls, ), attr)

1226

1805

return cls

1806

1227

1807

return wrapper

1228

1808

1229

1809

1230

1810

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

1231

"se.bsnet.fukt.Mandos"})

1811

"se.bsnet.fukt.Mandos"})

1232

1812

class ClientDBus(Client, DBusObjectWithProperties):

1233

1813

"""A Client class using D-Bus

1234

1814

1235

1815

Attributes:

1236

1816

dbus_object_path: dbus.ObjectPath

1237

1817

bus: dbus.SystemBus()

1238

1818

"""

1239

1819

1240

1820

runtime_expansions = (Client.runtime_expansions

1241

+ ("dbus_object_path",))

1242

1821

+ ("dbus_object_path", ))

1822

1823

_interface = "se.recompile.Mandos.Client"

1824

1243

1825

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

1244

1245

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

1826

1827

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

1246

1828

self.bus = bus

1247

1829

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

1248

1830

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

1249

1831

# the D-Bus

1250

client_object_name = unicode(self.name).translate(

1832

client_object_name = str(self.name).translate(

1251

1833

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

1252

1834

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

1253

self.dbus_object_path = (dbus.ObjectPath

1254

("/clients/" + client_object_name))

1835

self.dbus_object_path = dbus.ObjectPath(

1836

"/clients/" + client_object_name)

1255

1837

DBusObjectWithProperties.__init__(self, self.bus,

1256

1838

self.dbus_object_path)

1257

1258

def notifychangeproperty(transform_func,

1259

dbus_name, type_func=lambda x: x,

1260

variant_level=1):

1839

1840

def notifychangeproperty(transform_func, dbus_name,

1841

type_func=lambda x: x,

1842

variant_level=1,

1843

invalidate_only=False,

1844

_interface=_interface):

1261

1845

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

1262

1846

its changes to DBus.

1263

1847

1264

1848

transform_fun: Function that takes a value and a variant_level

1265

1849

and transforms it to a D-Bus type.

1266

1850

dbus_name: D-Bus name of the variable

1268

1852

to the D-Bus. Default: no transform

1269

1853

variant_level: D-Bus variant level. Default: 1

1270

1854

"""

1271

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

1855

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

1856

1272

1857

def setter(self, value):

1273

1858

if hasattr(self, "dbus_object_path"):

1274

1859

if (not hasattr(self, attrname) or

1275

1860

type_func(getattr(self, attrname, None))

1276

1861

!= type_func(value)):

1277

dbus_value = transform_func(type_func(value),

1278

variant_level

1279

=variant_level)

1280

self.PropertyChanged(dbus.String(dbus_name),

1281

dbus_value)

1862

if invalidate_only:

1863

self.PropertiesChanged(

1864

_interface, dbus.Dictionary(),

1865

dbus.Array((dbus_name, )))

1866

else:

1867

dbus_value = transform_func(

1868

type_func(value),

1869

variant_level=variant_level)

1870

self.PropertyChanged(dbus.String(dbus_name),

1871

dbus_value)

1872

self.PropertiesChanged(

1873

_interface,

1874

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

1875

dbus_value}),

1876

dbus.Array())

1282

1877

setattr(self, attrname, value)

1283

1878

1284

1879

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

1285

1880

1286

1881

expires = notifychangeproperty(datetime_to_dbus, "Expires")

1287

1882

approvals_pending = notifychangeproperty(dbus.Boolean,

1288

1883

"ApprovalPending",

1289

type_func = bool)

1884

type_func=bool)

1290

1885

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

1291

1886

last_enabled = notifychangeproperty(datetime_to_dbus,

1292

1887

"LastEnabled")

1293

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

1294

type_func = lambda checker:

1295

checker is not None)

1888

checker = notifychangeproperty(

1889

dbus.Boolean, "CheckerRunning",

1890

type_func=lambda checker: checker is not None)

1296

1891

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1297

1892

"LastCheckedOK")

1298

1893

last_checker_status = notifychangeproperty(dbus.Int16,

1301

1896

datetime_to_dbus, "LastApprovalRequest")

1302

1897

approved_by_default = notifychangeproperty(dbus.Boolean,

1303

1898

"ApprovedByDefault")

1304

approval_delay = notifychangeproperty(dbus.UInt64,

1305

"ApprovalDelay",

1306

type_func =

1307

timedelta_to_milliseconds)

1899

approval_delay = notifychangeproperty(

1900

dbus.UInt64, "ApprovalDelay",

1901

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

1308

1902

approval_duration = notifychangeproperty(

1309

1903

dbus.UInt64, "ApprovalDuration",

1310

type_func = timedelta_to_milliseconds)

1904

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

1311

1905

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

1312

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

1313

type_func =

1314

timedelta_to_milliseconds)

1906

timeout = notifychangeproperty(

1907

dbus.UInt64, "Timeout",

1908

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

1315

1909

extended_timeout = notifychangeproperty(

1316

1910

dbus.UInt64, "ExtendedTimeout",

1317

type_func = timedelta_to_milliseconds)

1318

interval = notifychangeproperty(dbus.UInt64,

1319

"Interval",

1320

type_func =

1321

timedelta_to_milliseconds)

1911

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

1912

interval = notifychangeproperty(

1913

dbus.UInt64, "Interval",

1914

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

1322

1915

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

1323

1916

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

1917

invalidate_only=True)

1918

1324

1919

del notifychangeproperty

1325

1920

1326

1921

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

1327

1922

try:

1328

1923

self.remove_from_connection()

1331

1926

if hasattr(DBusObjectWithProperties, "__del__"):

1332

1927

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

1333

1928

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

1334

1335

def checker_callback(self, pid, condition, command,

1336

*args, **kwargs):

1337

self.checker_callback_tag = None

1338

self.checker = None

1339

if os.WIFEXITED(condition):

1340

exitstatus = os.WEXITSTATUS(condition)

1929

1930

def checker_callback(self, source, condition,

1931

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

1932

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

1933

connection, command, *args,

1934

**kwargs)

1935

exitstatus = self.last_checker_status

1936

if exitstatus >= 0:

1341

1937

# Emit D-Bus signal

1342

1938

self.CheckerCompleted(dbus.Int16(exitstatus),

1343

dbus.Int64(condition),

1939

# This is specific to GNU libC

1940

dbus.Int64(exitstatus << 8),

1344

1941

dbus.String(command))

1345

1942

else:

1346

1943

# Emit D-Bus signal

1347

1944

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

1348

dbus.Int64(condition),

1945

dbus.Int64(

1946

# This is specific to GNU libC

1947

(exitstatus << 8)

1948

| self.last_checker_signal),

1349

1949

dbus.String(command))

1350

1351

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

1352

*args, **kwargs)

1353

1950

return ret

1951

1354

1952

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

1355

old_checker = self.checker

1356

if self.checker is not None:

1357

old_checker_pid = self.checker.pid

1358

else:

1359

old_checker_pid = None

1953

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

1360

1954

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

1361

1955

# Only if new checker process was started

1362

1956

if (self.checker is not None

1364

1958

# Emit D-Bus signal

1365

1959

self.CheckerStarted(self.current_checker_command)

1366

1960

return r

1367

1961

1368

1962

def _reset_approved(self):

1369

1963

self.approved = None

1370

1964

return False

1371

1965

1372

1966

def approve(self, value=True):

1373

1967

self.approved = value

1374

gobject.timeout_add(timedelta_to_milliseconds

1375

(self.approval_duration),

1376

self._reset_approved)

1968

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

1969

* 1000), self._reset_approved)

1377

1970

self.send_changedstate()

1378

1379

## D-Bus methods, signals & properties

1380

_interface = "se.recompile.Mandos.Client"

1381

1382

## Interfaces

1383

1384

@dbus_interface_annotations(_interface)

1385

def _foo(self):

1386

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

1387

"false"}

1388

1389

## Signals

1390

1971

1972

# D-Bus methods, signals & properties

1973

1974

# Interfaces

1975

1976

# Signals

1977

1391

1978

# CheckerCompleted - signal

1392

1979

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

1393

1980

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

1394

1981

"D-Bus signal"

1395

1982

pass

1396

1983

1397

1984

# CheckerStarted - signal

1398

1985

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

1399

1986

def CheckerStarted(self, command):

1400

1987

"D-Bus signal"

1401

1988

pass

1402

1989

1403

1990

# PropertyChanged - signal

1991

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

1404

1992

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

1405

1993

def PropertyChanged(self, property, value):

1406

1994

"D-Bus signal"

1407

1995

pass

1408

1996

1409

1997

# GotSecret - signal

1410

1998

@dbus.service.signal(_interface)

1411

1999

def GotSecret(self):

1414

2002

server to mandos-client

1415

2003

"""

1416

2004

pass

1417

2005

1418

2006

# Rejected - signal

1419

2007

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

1420

2008

def Rejected(self, reason):

1421

2009

"D-Bus signal"

1422

2010

pass

1423

2011

1424

2012

# NeedApproval - signal

1425

2013

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

1426

2014

def NeedApproval(self, timeout, default):

1427

2015

"D-Bus signal"

1428

2016

return self.need_approval()

1429

1430

## Methods

1431

2017

2018

# Methods

2019

1432

2020

# Approve - method

1433

2021

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

1434

2022

def Approve(self, value):

1435

2023

self.approve(value)

1436

2024

1437

2025

# CheckedOK - method

1438

2026

@dbus.service.method(_interface)

1439

2027

def CheckedOK(self):

1440

2028

self.checked_ok()

1441

2029

1442

2030

# Enable - method

2031

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

1443

2032

@dbus.service.method(_interface)

1444

2033

def Enable(self):

1445

2034

"D-Bus method"

1446

2035

self.enable()

1447

2036

1448

2037

# StartChecker - method

2038

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

1449

2039

@dbus.service.method(_interface)

1450

2040

def StartChecker(self):

1451

2041

"D-Bus method"

1452

2042

self.start_checker()

1453

2043

1454

2044

# Disable - method

2045

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

1455

2046

@dbus.service.method(_interface)

1456

2047

def Disable(self):

1457

2048

"D-Bus method"

1458

2049

self.disable()

1459

2050

1460

2051

# StopChecker - method

2052

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

1461

2053

@dbus.service.method(_interface)

1462

2054

def StopChecker(self):

1463

2055

self.stop_checker()

1464

1465

## Properties

1466

2056

2057

# Properties

2058

1467

2059

# ApprovalPending - property

1468

2060

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

1469

2061

def ApprovalPending_dbus_property(self):

1470

2062

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

1471

2063

1472

2064

# ApprovedByDefault - property

1473

@dbus_service_property(_interface, signature="b",

2065

@dbus_service_property(_interface,

2066

signature="b",

1474

2067

access="readwrite")

1475

2068

def ApprovedByDefault_dbus_property(self, value=None):

1476

2069

if value is None: # get

1477

2070

return dbus.Boolean(self.approved_by_default)

1478

2071

self.approved_by_default = bool(value)

1479

2072

1480

2073

# ApprovalDelay - property

1481

@dbus_service_property(_interface, signature="t",

2074

@dbus_service_property(_interface,

2075

signature="t",

1482

2076

access="readwrite")

1483

2077

def ApprovalDelay_dbus_property(self, value=None):

1484

2078

if value is None: # get

1485

return dbus.UInt64(self.approval_delay_milliseconds())

2079

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

2080

* 1000)

1486

2081

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

1487

2082

1488

2083

# ApprovalDuration - property

1489

@dbus_service_property(_interface, signature="t",

2084

@dbus_service_property(_interface,

2085

signature="t",

1490

2086

access="readwrite")

1491

2087

def ApprovalDuration_dbus_property(self, value=None):

1492

2088

if value is None: # get

1493

return dbus.UInt64(timedelta_to_milliseconds(

1494

self.approval_duration))

2089

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

2090

* 1000)

1495

2091

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

1496

2092

1497

2093

# Name - property

2094

@dbus_annotations(

2095

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

1498

2096

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

1499

2097

def Name_dbus_property(self):

1500

2098

return dbus.String(self.name)

1501

2099

2100

# KeyID - property

2101

@dbus_annotations(

2102

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

2103

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

2104

def KeyID_dbus_property(self):

2105

return dbus.String(self.key_id)

2106

1502

2107

# Fingerprint - property

2108

@dbus_annotations(

2109

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

1503

2110

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

1504

2111

def Fingerprint_dbus_property(self):

1505

2112

return dbus.String(self.fingerprint)

1506

2113

1507

2114

# Host - property

1508

@dbus_service_property(_interface, signature="s",

2115

@dbus_service_property(_interface,

2116

signature="s",

1509

2117

access="readwrite")

1510

2118

def Host_dbus_property(self, value=None):

1511

2119

if value is None: # get

1512

2120

return dbus.String(self.host)

1513

self.host = unicode(value)

1514

2121

self.host = str(value)

2122

1515

2123

# Created - property

2124

@dbus_annotations(

2125

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

1516

2126

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

1517

2127

def Created_dbus_property(self):

1518

2128

return datetime_to_dbus(self.created)

1519

2129

1520

2130

# LastEnabled - property

1521

2131

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

1522

2132

def LastEnabled_dbus_property(self):

1523

2133

return datetime_to_dbus(self.last_enabled)

1524

2134

1525

2135

# Enabled - property

1526

@dbus_service_property(_interface, signature="b",

2136

@dbus_service_property(_interface,

2137

signature="b",

1527

2138

access="readwrite")

1528

2139

def Enabled_dbus_property(self, value=None):

1529

2140

if value is None: # get

1532

2143

self.enable()

1533

2144

else:

1534

2145

self.disable()

1535

2146

1536

2147

# LastCheckedOK - property

1537

@dbus_service_property(_interface, signature="s",

2148

@dbus_service_property(_interface,

2149

signature="s",

1538

2150

access="readwrite")

1539

2151

def LastCheckedOK_dbus_property(self, value=None):

1540

2152

if value is not None:

1541

2153

self.checked_ok()

1542

2154

return

1543

2155

return datetime_to_dbus(self.last_checked_ok)

1544

2156

1545

2157

# LastCheckerStatus - property

1546

@dbus_service_property(_interface, signature="n",

1547

access="read")

2158

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

1548

2159

def LastCheckerStatus_dbus_property(self):

1549

2160

return dbus.Int16(self.last_checker_status)

1550

2161

1551

2162

# Expires - property

1552

2163

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

1553

2164

def Expires_dbus_property(self):

1554

2165

return datetime_to_dbus(self.expires)

1555

2166

1556

2167

# LastApprovalRequest - property

1557

2168

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

1558

2169

def LastApprovalRequest_dbus_property(self):

1559

2170

return datetime_to_dbus(self.last_approval_request)

1560

2171

1561

2172

# Timeout - property

1562

@dbus_service_property(_interface, signature="t",

2173

@dbus_service_property(_interface,

2174

signature="t",

1563

2175

access="readwrite")

1564

2176

def Timeout_dbus_property(self, value=None):

1565

2177

if value is None: # get

1566

return dbus.UInt64(self.timeout_milliseconds())

2178

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

1567

2179

old_timeout = self.timeout

1568

2180

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

1569

2181

# Reschedule disabling

1577

2189

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

1578

2190

is None):

1579

2191

return

1580

gobject.source_remove(self.disable_initiator_tag)

1581

self.disable_initiator_tag = (

1582

gobject.timeout_add(

1583

timedelta_to_milliseconds(self.expires - now),

1584

self.disable))

1585

2192

GLib.source_remove(self.disable_initiator_tag)

2193

self.disable_initiator_tag = GLib.timeout_add(

2194

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

2195

self.disable)

2196

1586

2197

# ExtendedTimeout - property

1587

@dbus_service_property(_interface, signature="t",

2198

@dbus_service_property(_interface,

2199

signature="t",

1588

2200

access="readwrite")

1589

2201

def ExtendedTimeout_dbus_property(self, value=None):

1590

2202

if value is None: # get

1591

return dbus.UInt64(self.extended_timeout_milliseconds())

2203

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

2204

* 1000)

1592

2205

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

1593

2206

1594

2207

# Interval - property

1595

@dbus_service_property(_interface, signature="t",

2208

@dbus_service_property(_interface,

2209

signature="t",

1596

2210

access="readwrite")

1597

2211

def Interval_dbus_property(self, value=None):

1598

2212

if value is None: # get

1599

return dbus.UInt64(self.interval_milliseconds())

2213

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

1600

2214

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

1601

2215

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

1602

2216

return

1603

2217

if self.enabled:

1604

2218

# Reschedule checker run

1605

gobject.source_remove(self.checker_initiator_tag)

1606

self.checker_initiator_tag = (gobject.timeout_add

1607

(value, self.start_checker))

1608

self.start_checker() # Start one now, too

1609

2219

GLib.source_remove(self.checker_initiator_tag)

2220

self.checker_initiator_tag = GLib.timeout_add(

2221

value, self.start_checker)

2222

self.start_checker() # Start one now, too

2223

1610

2224

# Checker - property

1611

@dbus_service_property(_interface, signature="s",

2225

@dbus_service_property(_interface,

2226

signature="s",

1612

2227

access="readwrite")

1613

2228

def Checker_dbus_property(self, value=None):

1614

2229

if value is None: # get

1615

2230

return dbus.String(self.checker_command)

1616

self.checker_command = unicode(value)

1617

2231

self.checker_command = str(value)

2232

1618

2233

# CheckerRunning - property

1619

@dbus_service_property(_interface, signature="b",

2234

@dbus_service_property(_interface,

2235

signature="b",

1620

2236

access="readwrite")

1621

2237

def CheckerRunning_dbus_property(self, value=None):

1622

2238

if value is None: # get

1625

2241

self.start_checker()

1626

2242

else:

1627

2243

self.stop_checker()

1628

2244

1629

2245

# ObjectPath - property

2246

@dbus_annotations(

2247

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

2248

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

1630

2249

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

1631

2250

def ObjectPath_dbus_property(self):

1632

return self.dbus_object_path # is already a dbus.ObjectPath

1633

2251

return self.dbus_object_path # is already a dbus.ObjectPath

2252

1634

2253

# Secret = property

1635

@dbus_service_property(_interface, signature="ay",

1636

access="write", byte_arrays=True)

2254

@dbus_annotations(

2255

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

2256

"invalidates"})

2257

@dbus_service_property(_interface,

2258

signature="ay",

2259

access="write",

2260

byte_arrays=True)

1637

2261

def Secret_dbus_property(self, value):

1638

self.secret = str(value)

1639

2262

self.secret = bytes(value)

2263

1640

2264

del _interface

1641

2265

1642

2266

1643

class ProxyClient(object):

1644

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

2267

class ProxyClient:

2268

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

1645

2269

self._pipe = child_pipe

1646

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

2270

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

1647

2271

if not self._pipe.recv():

1648

raise KeyError()

1649

2272

raise KeyError(key_id or fpr)

2273

1650

2274

def __getattribute__(self, name):

1651

if name == '_pipe':

2275

if name == "_pipe":

1652

2276

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

1653

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

2277

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

1654

2278

data = self._pipe.recv()

1655

if data[0] == 'data':

2279

if data[0] == "data":

1656

2280

return data[1]

1657

if data[0] == 'function':

2281

if data[0] == "function":

2282

1658

2283

def func(*args, **kwargs):

1659

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

2284

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

1660

2285

return self._pipe.recv()[1]

2286

1661

2287

return func

1662

2288

1663

2289

def __setattr__(self, name, value):

1664

if name == '_pipe':

2290

if name == "_pipe":

1665

2291

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

1666

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

2292

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

1667

2293

1668

2294

1669

2295

class ClientHandler(socketserver.BaseRequestHandler, object):

1670

2296

"""A class to handle client connections.

1671

2297

1672

2298

Instantiated once for each connection to handle it.

1673

2299

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

1674

2300

1675

2301

def handle(self):

1676

2302

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

1677

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

1678

unicode(self.client_address))

1679

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

1680

self.server.child_pipe.fileno())

1681

1682

session = (gnutls.connection

1683

.ClientSession(self.request,

1684

gnutls.connection

1685

.X509Credentials()))

1686

1687

# Note: gnutls.connection.X509Credentials is really a

1688

# generic GnuTLS certificate credentials object so long as

1689

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

1690

# here despite using OpenPGP certificates.

1691

1692

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

1693

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

1694

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

1695

# "+DHE-DSS"))

2303

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

2304

str(self.client_address))

2305

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

2306

2307

session = gnutls.ClientSession(self.request)

2308

2309

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

2310

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

2311

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

2312

# "+DHE-DSS"))

1696

2313

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

1697

2314

priority = self.server.gnutls_priority

1698

2315

if priority is None:

1699

2316

priority = "NORMAL"

1700

(gnutls.library.functions

1701

.gnutls_priority_set_direct(session._c_object,

1702

priority, None))

1703

2317

gnutls.priority_set_direct(session,

2318

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

2319

1704

2320

# Start communication using the Mandos protocol

1705

2321

# Get protocol number

1706

2322

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

1707

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

2323

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

1708

2324

try:

1709

2325

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

1710

2326

raise RuntimeError(line)

1711

2327

except (ValueError, IndexError, RuntimeError) as error:

1712

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

2328

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

1713

2329

return

1714

2330

1715

2331

# Start GnuTLS connection

1716

2332

try:

1717

2333

session.handshake()

1718

except gnutls.errors.GNUTLSError as error:

1719

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

2334

except gnutls.Error as error:

2335

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

1720

2336

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

1721

2337

# established. Just abandon the request.

1722

2338

return

1723

logger.debug("Handshake succeeded")

1724

2339

log.debug("Handshake succeeded")

2340

1725

2341

approval_required = False

1726

2342

try:

1727

try:

1728

fpr = self.fingerprint(self.peer_certificate

1729

(session))

1730

except (TypeError,

1731

gnutls.errors.GNUTLSError) as error:

1732

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

1733

return

1734

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

1735

1736

try:

1737

client = ProxyClient(child_pipe, fpr,

2343

if gnutls.has_rawpk:

2344

fpr = b""

2345

try:

2346

key_id = self.key_id(

2347

self.peer_certificate(session))

2348

except (TypeError, gnutls.Error) as error:

2349

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

2350

return

2351

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

2352

key_id.decode("utf-8",

2353

errors="replace"))

2354

2355

else:

2356

key_id = b""

2357

try:

2358

fpr = self.fingerprint(

2359

self.peer_certificate(session))

2360

except (TypeError, gnutls.Error) as error:

2361

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

2362

return

2363

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

2364

2365

try:

2366

client = ProxyClient(child_pipe, key_id, fpr,

1738

2367

self.client_address)

1739

2368

except KeyError:

1740

2369

return

1741

2370

1742

2371

if client.approval_delay:

1743

2372

delay = client.approval_delay

1744

2373

client.approvals_pending += 1

1745

2374

approval_required = True

1746

2375

1747

2376

while True:

1748

2377

if not client.enabled:

1749

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

1750

client.name)

2378

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

1751

2379

if self.server.use_dbus:

1752

2380

# Emit D-Bus signal

1753

2381

client.Rejected("Disabled")

1754

2382

return

1755

2383

1756

2384

if client.approved or not client.approval_delay:

1757

#We are approved or approval is disabled

2385

# We are approved or approval is disabled

1758

2386

break

1759

2387

elif client.approved is None:

1760

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

2388

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

2389

client.name)

2390

if self.server.use_dbus:

2391

# Emit D-Bus signal

2392

client.NeedApproval(

2393

client.approval_delay.total_seconds()

2394

* 1000, client.approved_by_default)

2395

else:

2396

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

1761

2397

client.name)

1762

2398

if self.server.use_dbus:

1763

2399

# Emit D-Bus signal

1764

client.NeedApproval(

1765

client.approval_delay_milliseconds(),

1766

client.approved_by_default)

1767

else:

1768

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

1769

client.name)

1770

if self.server.use_dbus:

1771

# Emit D-Bus signal

1772

2400

client.Rejected("Denied")

1773

2401

return

1774

1775

#wait until timeout or approved

2402

2403

# wait until timeout or approved

1776

2404

time = datetime.datetime.now()

1777

2405

client.changedstate.acquire()

1778

client.changedstate.wait(

1779

float(timedelta_to_milliseconds(delay)

1780

/ 1000))

2406

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

1781

2407

client.changedstate.release()

1782

2408

time2 = datetime.datetime.now()

1783

2409

if (time2 - time) >= delay:

1784

2410

if not client.approved_by_default:

1785

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

1786

" waiting for approval",

1787

client.name)

2411

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

2412

" waiting for approval",

2413

client.name)

1788

2414

if self.server.use_dbus:

1789

2415

# Emit D-Bus signal

1790

2416

client.Rejected("Approval timed out")

1793

2419

break

1794

2420

else:

1795

2421

delay -= time2 - time

1796

1797

sent_size = 0

1798

while sent_size < len(client.secret):

1799

try:

1800

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

1801

except gnutls.errors.GNUTLSError as error:

1802

logger.warning("gnutls send failed",

1803

exc_info=error)

1804

return

1805

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

1806

sent, len(client.secret)

1807

- (sent_size + sent))

1808

sent_size += sent

1809

1810

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

2422

2423

try:

2424

session.send(client.secret)

2425

except gnutls.Error as error:

2426

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

2427

return

2428

2429

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

1811

2430

# bump the timeout using extended_timeout

1812

2431

client.bump_timeout(client.extended_timeout)

1813

2432

if self.server.use_dbus:

1814

2433

# Emit D-Bus signal

1815

2434

client.GotSecret()

1816

2435

1817

2436

finally:

1818

2437

if approval_required:

1819

2438

client.approvals_pending -= 1

1820

2439

try:

1821

2440

session.bye()

1822

except gnutls.errors.GNUTLSError as error:

1823

logger.warning("GnuTLS bye failed",

1824

exc_info=error)

1825

2441

except gnutls.Error as error:

2442

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

2443

1826

2444

@staticmethod

1827

2445

def peer_certificate(session):

1828

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

1829

# If not an OpenPGP certificate...

1830

if (gnutls.library.functions

1831

.gnutls_certificate_type_get(session._c_object)

1832

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

1833

# ...do the normal thing

1834

return session.peer_certificate

2446

"Return the peer's certificate as a bytestring"

2447

try:

2448

cert_type = gnutls.certificate_type_get2(

2449

session, gnutls.CTYPE_PEERS)

2450

except AttributeError:

2451

cert_type = gnutls.certificate_type_get(session)

2452

if gnutls.has_rawpk:

2453

valid_cert_types = frozenset((gnutls.CRT_RAWPK,))

2454

else:

2455

valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))

2456

# If not a valid certificate type...

2457

if cert_type not in valid_cert_types:

2458

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

2459

valid_cert_types)

2460

# ...return invalid data

2461

return b""

1835

2462

list_size = ctypes.c_uint(1)

1836

cert_list = (gnutls.library.functions

1837

.gnutls_certificate_get_peers

1838

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

2463

cert_list = (gnutls.certificate_get_peers

2464

(session, ctypes.byref(list_size)))

1839

2465

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

1840

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

1841

" certificate")

2466

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

1842

2467

if list_size.value == 0:

1843

2468

return None

1844

2469

cert = cert_list[0]

1845

2470

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

1846

2471

2472

@staticmethod

2473

def key_id(certificate):

2474

"Convert a certificate bytestring to a hexdigit key ID"

2475

# New GnuTLS "datum" with the public key

2476

datum = gnutls.datum_t(

2477

ctypes.cast(ctypes.c_char_p(certificate),

2478

ctypes.POINTER(ctypes.c_ubyte)),

2479

ctypes.c_uint(len(certificate)))

2480

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

2481

# New empty GnuTLS certificate

2482

pubkey = gnutls.pubkey_t()

2483

gnutls.pubkey_init(ctypes.byref(pubkey))

2484

# Import the raw public key into the certificate

2485

gnutls.pubkey_import(pubkey,

2486

ctypes.byref(datum),

2487

gnutls.X509_FMT_DER)

2488

# New buffer for the key ID

2489

buf = ctypes.create_string_buffer(32)

2490

buf_len = ctypes.c_size_t(len(buf))

2491

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

2492

gnutls.pubkey_get_key_id(

2493

pubkey,

2494

gnutls.KEYID_USE_SHA256,

2495

ctypes.cast(ctypes.byref(buf),

2496

ctypes.POINTER(ctypes.c_ubyte)),

2497

ctypes.byref(buf_len))

2498

# Deinit the certificate

2499

gnutls.pubkey_deinit(pubkey)

2500

2501

# Convert the buffer to a Python bytestring

2502

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

2503

# Convert the bytestring to hexadecimal notation

2504

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

2505

return hex_key_id

2506

1847

2507

@staticmethod

1848

2508

def fingerprint(openpgp):

1849

2509

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

1850

2510

# New GnuTLS "datum" with the OpenPGP public key

1851

datum = (gnutls.library.types

1852

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

1853

ctypes.POINTER

1854

(ctypes.c_ubyte)),

1855

ctypes.c_uint(len(openpgp))))

2511

datum = gnutls.datum_t(

2512

ctypes.cast(ctypes.c_char_p(openpgp),

2513

ctypes.POINTER(ctypes.c_ubyte)),

2514

ctypes.c_uint(len(openpgp)))

1856

2515

# New empty GnuTLS certificate

1857

crt = gnutls.library.types.gnutls_openpgp_crt_t()

1858

(gnutls.library.functions

1859

.gnutls_openpgp_crt_init(ctypes.byref(crt)))

2516

crt = gnutls.openpgp_crt_t()

2517

gnutls.openpgp_crt_init(ctypes.byref(crt))

1860

2518

# Import the OpenPGP public key into the certificate

1861

(gnutls.library.functions

1862

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

1863

gnutls.library.constants

1864

.GNUTLS_OPENPGP_FMT_RAW))

2519

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

2520

gnutls.OPENPGP_FMT_RAW)

1865

2521

# Verify the self signature in the key

1866

2522

crtverify = ctypes.c_uint()

1867

(gnutls.library.functions

1868

.gnutls_openpgp_crt_verify_self(crt, 0,

1869

ctypes.byref(crtverify)))

2523

gnutls.openpgp_crt_verify_self(crt, 0,

2524

ctypes.byref(crtverify))

1870

2525

if crtverify.value != 0:

1871

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1872

raise (gnutls.errors.CertificateSecurityError

1873

("Verify failed"))

2526

gnutls.openpgp_crt_deinit(crt)

2527

raise gnutls.CertificateSecurityError(code

2528

=crtverify.value)

1874

2529

# New buffer for the fingerprint

1875

2530

buf = ctypes.create_string_buffer(20)

1876

2531

buf_len = ctypes.c_size_t()

1877

2532

# Get the fingerprint from the certificate into the buffer

1878

(gnutls.library.functions

1879

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

1880

ctypes.byref(buf_len)))

2533

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

2534

ctypes.byref(buf_len))

1881

2535

# Deinit the certificate

1882

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

2536

gnutls.openpgp_crt_deinit(crt)

1883

2537

# Convert the buffer to a Python bytestring

1884

2538

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

1885

2539

# Convert the bytestring to hexadecimal notation

1887

2541

return hex_fpr

1888

2542

1889

2543

1890

class MultiprocessingMixIn(object):

2544

class MultiprocessingMixIn:

1891

2545

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

2546

1892

2547

def sub_process_main(self, request, address):

1893

2548

try:

1894

2549

self.finish_request(request, address)

1895

2550

except Exception:

1896

2551

self.handle_error(request, address)

1897

2552

self.close_request(request)

1898

2553

1899

2554

def process_request(self, request, address):

1900

2555

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

1901

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

1902

args = (request, address))

2556

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

2557

args=(request, address))

1903

2558

proc.start()

1904

2559

return proc

1905

2560

1906

2561

1907

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

2562

class MultiprocessingMixInWithPipe(MultiprocessingMixIn):

1908

2563

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

2564

1909

2565

def process_request(self, request, client_address):

1910

2566

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

1911

2567

1912

2568

This function creates a new pipe in self.pipe

1913

2569

"""

1914

2570

parent_pipe, self.child_pipe = multiprocessing.Pipe()

1915

2571

1916

2572

proc = MultiprocessingMixIn.process_request(self, request,

1917

2573

client_address)

1918

2574

self.child_pipe.close()

1919

2575

self.add_pipe(parent_pipe, proc)

1920

2576

1921

2577

def add_pipe(self, parent_pipe, proc):

1922

2578

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

1923

2579

raise NotImplementedError()

1924

2580

1925

2581

1926

2582

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

1927

socketserver.TCPServer, object):

1928

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

1929

2583

socketserver.TCPServer):

2584

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

2585

1930

2586

Attributes:

1931

2587

enabled: Boolean; whether this server is activated yet

1932

2588

interface: None or a network interface name (string)

1933

2589

use_ipv6: Boolean; to use IPv6 or not

1934

2590

"""

2591

1935

2592

def __init__(self, server_address, RequestHandlerClass,

1936

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

2593

interface=None,

2594

use_ipv6=True,

2595

socketfd=None):

1937

2596

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

1938

2597

creating a new one with socket.socket().

1939

2598

"""

1945

2604

self.socketfd = socketfd

1946

2605

# Save the original socket.socket() function

1947

2606

self.socket_socket = socket.socket

2607

1948

2608

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

1949

#

2609

#

1950

2610

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

1951

2611

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

1952

2612

# patching socket.socket.)

1953

#

2613

#

1954

2614

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

1955

2615

@functools.wraps(socket.socket)

1956

2616

def socket_wrapper(*args, **kwargs):

1968

2628

# socket_wrapper(), if socketfd was set.

1969

2629

socketserver.TCPServer.__init__(self, server_address,

1970

2630

RequestHandlerClass)

1971

2631

1972

2632

def server_bind(self):

1973

2633

"""This overrides the normal server_bind() function

1974

2634

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

1975

2635

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

2636

global SO_BINDTODEVICE

1976

2637

if self.interface is not None:

1977

2638

if SO_BINDTODEVICE is None:

1978

logger.error("SO_BINDTODEVICE does not exist;"

1979

" cannot bind to interface %s",

1980

self.interface)

1981

else:

1982

try:

1983

self.socket.setsockopt(socket.SOL_SOCKET,

1984

SO_BINDTODEVICE,

1985

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

1986

except socket.error as error:

1987

if error.errno == errno.EPERM:

1988

logger.error("No permission to bind to"

1989

" interface %s", self.interface)

1990

elif error.errno == errno.ENOPROTOOPT:

1991

logger.error("SO_BINDTODEVICE not available;"

1992

" cannot bind to interface %s",

1993

self.interface)

1994

elif error.errno == errno.ENODEV:

1995

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

1996

" cannot bind", self.interface)

1997

else:

1998

raise

2639

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

2640

# common enough.

2641

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

2642

SO_BINDTODEVICE = 25

2643

try:

2644

self.socket.setsockopt(

2645

socket.SOL_SOCKET, SO_BINDTODEVICE,

2646

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

2647

except socket.error as error:

2648

if error.errno == errno.EPERM:

2649

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

2650

self.interface)

2651

elif error.errno == errno.ENOPROTOOPT:

2652

log.error("SO_BINDTODEVICE not available; cannot"

2653

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

2654

elif error.errno == errno.ENODEV:

2655

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

2656

" bind", self.interface)

2657

else:

2658

raise

1999

2659

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

2000

2660

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

2661

if self.server_address[1]:

2662

self.allow_reuse_address = True

2001

2663

if not self.server_address[0]:

2002

2664

if self.address_family == socket.AF_INET6:

2003

any_address = "::" # in6addr_any

2665

any_address = "::" # in6addr_any

2004

2666

else:

2005

any_address = "0.0.0.0" # INADDR_ANY

2667

any_address = "0.0.0.0" # INADDR_ANY

2006

2668

self.server_address = (any_address,

2007

2669

self.server_address[1])

2008

2670

elif not self.server_address[1]:

2009

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

2010

0)

2671

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

2011

2672

# if self.interface:

2012

2673

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

2013

2674

# 0, # port

2019

2680

2020

2681

class MandosServer(IPv6_TCPServer):

2021

2682

"""Mandos server.

2022

2683

2023

2684

Attributes:

2024

2685

clients: set of Client objects

2025

2686

gnutls_priority GnuTLS priority string

2026

2687

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

2027

2028

Assumes a gobject.MainLoop event loop.

2688

2689

Assumes a GLib.MainLoop event loop.

2029

2690

"""

2691

2030

2692

def __init__(self, server_address, RequestHandlerClass,

2031

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

2032

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

2693

interface=None,

2694

use_ipv6=True,

2695

clients=None,

2696

gnutls_priority=None,

2697

use_dbus=True,

2698

socketfd=None):

2033

2699

self.enabled = False

2034

2700

self.clients = clients

2035

2701

if self.clients is None:

2038

2704

self.gnutls_priority = gnutls_priority

2039

2705

IPv6_TCPServer.__init__(self, server_address,

2040

2706

RequestHandlerClass,

2041

interface = interface,

2042

use_ipv6 = use_ipv6,

2043

socketfd = socketfd)

2707

interface=interface,

2708

use_ipv6=use_ipv6,

2709

socketfd=socketfd)

2710

2044

2711

def server_activate(self):

2045

2712

if self.enabled:

2046

2713

return socketserver.TCPServer.server_activate(self)

2047

2714

2048

2715

def enable(self):

2049

2716

self.enabled = True

2050

2717

2051

2718

def add_pipe(self, parent_pipe, proc):

2052

2719

# Call "handle_ipc" for both data and EOF events

2053

gobject.io_add_watch(parent_pipe.fileno(),

2054

gobject.IO_IN | gobject.IO_HUP,

2055

functools.partial(self.handle_ipc,

2056

parent_pipe =

2057

parent_pipe,

2058

proc = proc))

2059

2060

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

2061

proc = None, client_object=None):

2720

GLib.io_add_watch(

2721

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

2722

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

2723

functools.partial(self.handle_ipc,

2724

parent_pipe=parent_pipe,

2725

proc=proc))

2726

2727

def handle_ipc(self, source, condition,

2728

parent_pipe=None,

2729

proc=None,

2730

client_object=None):

2062

2731

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

2063

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

2732

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

2064

2733

# Wait for other process to exit

2065

2734

proc.join()

2066

2735

return False

2067

2736

2068

2737

# Read a request from the child

2069

2738

request = parent_pipe.recv()

2070

2739

command = request[0]

2071

2072

if command == 'init':

2073

fpr = request[1]

2074

address = request[2]

2075

2076

for c in self.clients.itervalues():

2077

if c.fingerprint == fpr:

2740

2741

if command == "init":

2742

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

2743

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

2744

address = request[3]

2745

2746

for c in self.clients.values():

2747

if key_id == ("E3B0C44298FC1C149AFBF4C8996FB924"

2748

"27AE41E4649B934CA495991B7852B855"):

2749

continue

2750

if key_id and c.key_id == key_id:

2751

client = c

2752

break

2753

if fpr and c.fingerprint == fpr:

2078

2754

client = c

2079

2755

break

2080

2756

else:

2081

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

2082

"dress: %s", fpr, address)

2757

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

2758

" %s", key_id or fpr, address)

2083

2759

if self.use_dbus:

2084

2760

# Emit D-Bus signal

2085

mandos_dbus_service.ClientNotFound(fpr,

2761

mandos_dbus_service.ClientNotFound(key_id or fpr,

2086

2762

address[0])

2087

2763

parent_pipe.send(False)

2088

2764

return False

2089

2090

gobject.io_add_watch(parent_pipe.fileno(),

2091

gobject.IO_IN | gobject.IO_HUP,

2092

functools.partial(self.handle_ipc,

2093

parent_pipe =

2094

parent_pipe,

2095

proc = proc,

2096

client_object =

2097

client))

2765

2766

GLib.io_add_watch(

2767

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

2768

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

2769

functools.partial(self.handle_ipc,

2770

parent_pipe=parent_pipe,

2771

proc=proc,

2772

client_object=client))

2098

2773

parent_pipe.send(True)

2099

2774

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

2100

2775

# same fileno

2101

2776

return False

2102

if command == 'funcall':

2777

if command == "funcall":

2103

2778

funcname = request[1]

2104

2779

args = request[2]

2105

2780

kwargs = request[3]

2106

2107

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

2781

2782

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

2108

2783

funcname)(*args,

2109

**kwargs)))

2110

2111

if command == 'getattr':

2784

**kwargs)))

2785

2786

if command == "getattr":

2112

2787

attrname = request[1]

2113

if callable(client_object.__getattribute__(attrname)):

2114

parent_pipe.send(('function',))

2788

if isinstance(client_object.__getattribute__(attrname),

2789

collections.abc.Callable):

2790

parent_pipe.send(("function", ))

2115

2791

else:

2116

parent_pipe.send(('data', client_object

2117

.__getattribute__(attrname)))

2118

2119

if command == 'setattr':

2792

parent_pipe.send((

2793

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

2794

2795

if command == "setattr":

2120

2796

attrname = request[1]

2121

2797

value = request[2]

2122

2798

setattr(client_object, attrname, value)

2123

2799

2124

2800

return True

2125

2801

2126

2802

2127

2803

def rfc3339_duration_to_delta(duration):

2128

2804

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

2129

2130

>>> rfc3339_duration_to_delta("P7D")

2131

datetime.timedelta(7)

2132

>>> rfc3339_duration_to_delta("PT60S")

2133

datetime.timedelta(0, 60)

2134

>>> rfc3339_duration_to_delta("PT60M")

2135

datetime.timedelta(0, 3600)

2136

>>> rfc3339_duration_to_delta("PT24H")

2137

datetime.timedelta(1)

2138

>>> rfc3339_duration_to_delta("P1W")

2139

datetime.timedelta(7)

2140

>>> rfc3339_duration_to_delta("PT5M30S")

2141

datetime.timedelta(0, 330)

2142

>>> rfc3339_duration_to_delta("P1DT3M20S")

2143

datetime.timedelta(1, 200)

2805

2806

>>> timedelta = datetime.timedelta

2807

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

2808

True

2809

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

2810

True

2811

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

2812

True

2813

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

2814

True

2815

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

2816

True

2817

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

2818

True

2819

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

2820

True

2821

>>> del timedelta

2144

2822

"""

2145

2823

2146

2824

# Parsing an RFC 3339 duration with regular expressions is not

2147

2825

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

2148

2826

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

2149

2827

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

2150

2828

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

2151

2829

# avoid excessive use of external libraries.

2152

2830

2153

2831

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

2154

Token = collections.namedtuple("Token",

2155

("regexp", # To match token; if

2156

# "value" is not None,

2157

# must have a "group"

2158

# containing digits

2159

"value", # datetime.timedelta or

2160

# None

2161

"followers")) # Tokens valid after

2162

# this token

2832

Token = collections.namedtuple("Token", (

2833

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

2834

# a "group" containing digits

2835

"value", # datetime.timedelta or None

2836

"followers")) # Tokens valid after this token

2163

2837

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

2164

2838

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

2165

2839

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

2166

2840

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

2167

2841

datetime.timedelta(seconds=1),

2168

frozenset((token_end,)))

2842

frozenset((token_end, )))

2169

2843

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

2170

2844

datetime.timedelta(minutes=1),

2171

2845

frozenset((token_second, token_end)))

2187

2861

frozenset((token_month, token_end)))

2188

2862

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

2189

2863

datetime.timedelta(weeks=1),

2190

frozenset((token_end,)))

2864

frozenset((token_end, )))

2191

2865

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

2192

2866

frozenset((token_year, token_month,

2193

2867

token_day, token_time,

2194

token_week))),

2195

# Define starting values

2196

value = datetime.timedelta() # Value so far

2868

token_week)))

2869

# Define starting values:

2870

# Value so far

2871

value = datetime.timedelta()

2197

2872

found_token = None

2198

followers = frozenset(token_duration,) # Following valid tokens

2199

s = duration # String left to parse

2873

# Following valid tokens

2874

followers = frozenset((token_duration, ))

2875

# String left to parse

2876

s = duration

2200

2877

# Loop until end token is found

2201

2878

while found_token is not token_end:

2202

2879

# Search for any currently valid tokens

2218

2895

break

2219

2896

else:

2220

2897

# No currently valid tokens were found

2221

raise ValueError("Invalid RFC 3339 duration")

2898

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

2899

.format(duration))

2222

2900

# End token found

2223

2901

return value

2224

2902

2225

2903

2226

2904

def string_to_delta(interval):

2227

2905

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

2228

2229

>>> string_to_delta('7d')

2230

datetime.timedelta(7)

2231

>>> string_to_delta('60s')

2232

datetime.timedelta(0, 60)

2233

>>> string_to_delta('60m')

2234

datetime.timedelta(0, 3600)

2235

>>> string_to_delta('24h')

2236

datetime.timedelta(1)

2237

>>> string_to_delta('1w')

2238

datetime.timedelta(7)

2239

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

2240

datetime.timedelta(0, 330)

2906

2907

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

2908

True

2909

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

2910

True

2911

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

2912

True

2913

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

2914

True

2915

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

2916

True

2917

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

2918

True

2241

2919

"""

2242

2920

2243

2921

try:

2244

2922

return rfc3339_duration_to_delta(interval)

2245

2923

except ValueError:

2246

2924

pass

2247

2925

2248

2926

timevalue = datetime.timedelta(0)

2249

2927

for s in interval.split():

2250

2928

try:

2251

suffix = unicode(s[-1])

2929

suffix = s[-1]

2252

2930

value = int(s[:-1])

2253

2931

if suffix == "d":

2254

2932

delta = datetime.timedelta(value)

2261

2939

elif suffix == "w":

2262

2940

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

2263

2941

else:

2264

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

2265

.format(suffix))

2942

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

2266

2943

except IndexError as e:

2267

2944

raise ValueError(*(e.args))

2268

2945

timevalue += delta

2269

2946

return timevalue

2270

2947

2271

2948

2272

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

2949

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

2273

2950

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

2274

2951

2275

2952

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

2276

2953

if os.fork():

2277

2954

sys.exit()

2285

2962

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

2286

2963

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

2287

2964

raise OSError(errno.ENODEV,

2288

"{0} not a character device"

2965

"{} not a character device"

2289

2966

.format(os.devnull))

2290

2967

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

2291

2968

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

2295

2972

2296

2973

2297

2974

def main():

2298

2975

2299

2976

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

2300

2977

# Parsing of options, both command line and config file

2301

2978

2302

2979

parser = argparse.ArgumentParser()

2303

2980

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

2304

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

2981

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

2305

2982

help="show version number and exit")

2306

2983

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

2307

2984

help="Bind to interface IF")

2340

3017

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

2341

3018

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

2342

3019

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

2343

3020

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

3021

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

3022

default=None)

3023

2344

3024

options = parser.parse_args()

2345

2346

if options.check:

2347

import doctest

2348

fail_count, test_count = doctest.testmod()

2349

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

2350

3025

2351

3026

# Default values for config file for server-global settings

2352

server_defaults = { "interface": "",

2353

"address": "",

2354

"port": "",

2355

"debug": "False",

2356

"priority":

2357

"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:+SIGN-RSA-SHA224:+SIGN-RSA-RMD160",

2358

"servicename": "Mandos",

2359

"use_dbus": "True",

2360

"use_ipv6": "True",

2361

"debuglevel": "",

2362

"restore": "True",

2363

"socket": "",

2364

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

2365

"foreground": "False",

2366

}

2367

3027

if gnutls.has_rawpk:

3028

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

3029

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

3030

else:

3031

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

3032

":+SIGN-DSA-SHA256")

3033

server_defaults = {"interface": "",

3034

"address": "",

3035

"port": "",

3036

"debug": "False",

3037

"priority": priority,

3038

"servicename": "Mandos",

3039

"use_dbus": "True",

3040

"use_ipv6": "True",

3041

"debuglevel": "",

3042

"restore": "True",

3043

"socket": "",

3044

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

3045

"foreground": "False",

3046

"zeroconf": "True",

3047

}

3048

del priority

3049

2368

3050

# Parse config file for server-global settings

2369

server_config = configparser.SafeConfigParser(server_defaults)

3051

server_config = configparser.ConfigParser(server_defaults)

2370

3052

del server_defaults

2371

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

2372

"mandos.conf"))

2373

# Convert the SafeConfigParser object to a dict

3053

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

3054

# Convert the ConfigParser object to a dict

2374

3055

server_settings = server_config.defaults()

2375

3056

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

2376

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

3057

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

3058

"foreground", "zeroconf"):

2377

3059

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

2378

3060

option)

2379

3061

if server_settings["port"]:

2389

3071

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

2390

3072

["socket"])

2391

3073

del server_config

2392

3074

2393

3075

# Override the settings from the config file with command line

2394

3076

# options, if set.

2395

3077

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

2396

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

2397

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

2398

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

3078

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

3079

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

3080

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

2399

3081

value = getattr(options, option)

2400

3082

if value is not None:

2401

3083

server_settings[option] = value

2402

3084

del options

2403

3085

# Force all strings to be unicode

2404

3086

for option in server_settings.keys():

2405

if type(server_settings[option]) is str:

2406

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

3087

if isinstance(server_settings[option], bytes):

3088

server_settings[option] = (server_settings[option]

3089

.decode("utf-8"))

2407

3090

# Force all boolean options to be boolean

2408

3091

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

2409

"foreground"):

3092

"foreground", "zeroconf"):

2410

3093

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

2411

3094

# Debug implies foreground

2412

3095

if server_settings["debug"]:

2413

3096

server_settings["foreground"] = True

2414

3097

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

2415

3098

2416

3099

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

2417

3100

3101

if (not server_settings["zeroconf"]

3102

and not (server_settings["port"]

3103

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

3104

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

3105

2418

3106

# For convenience

2419

3107

debug = server_settings["debug"]

2420

3108

debuglevel = server_settings["debuglevel"]

2423

3111

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

2424

3112

stored_state_file)

2425

3113

foreground = server_settings["foreground"]

2426

3114

zeroconf = server_settings["zeroconf"]

3115

2427

3116

if debug:

2428

3117

initlogger(debug, logging.DEBUG)

2429

3118

else:

2432

3121

else:

2433

3122

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

2434

3123

initlogger(debug, level)

2435

3124

2436

3125

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

2437

syslogger.setFormatter(logging.Formatter

2438

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

2439

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

2440

.format(server_settings

2441

["servicename"])))

2442

3126

syslogger.setFormatter(

3127

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

3128

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

3129

server_settings["servicename"])))

3130

2443

3131

# Parse config file with clients

2444

client_config = configparser.SafeConfigParser(Client

2445

.client_defaults)

3132

client_config = configparser.ConfigParser(Client.client_defaults)

2446

3133

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

2447

3134

"clients.conf"))

2448

3135

2449

3136

global mandos_dbus_service

2450

3137

mandos_dbus_service = None

2451

2452

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

2453

server_settings["port"]),

2454

ClientHandler,

2455

interface=(server_settings["interface"]

2456

or None),

2457

use_ipv6=use_ipv6,

2458

gnutls_priority=

2459

server_settings["priority"],

2460

use_dbus=use_dbus,

2461

socketfd=(server_settings["socket"]

2462

or None))

3138

3139

socketfd = None

3140

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

3141

socketfd = server_settings["socket"]

3142

tcp_server = MandosServer(

3143

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

3144

ClientHandler,

3145

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

3146

use_ipv6=use_ipv6,

3147

gnutls_priority=server_settings["priority"],

3148

use_dbus=use_dbus,

3149

socketfd=socketfd)

2463

3150

if not foreground:

2464

3151

pidfilename = "/run/mandos.pid"

2465

3152

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

2466

3153

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

2467

3154

pidfile = None

2468

3155

try:

2469

pidfile = open(pidfilename, "w")

3156

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

2470

3157

except IOError as e:

2471

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

2472

exc_info=e)

2473

2474

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

3158

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

3159

exc_info=e)

3160

3161

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

3162

("mandos", "mandos"),

3163

("nobody", "nogroup")):

2475

3164

try:

2476

3165

uid = pwd.getpwnam(name).pw_uid

2477

gid = pwd.getpwnam(name).pw_gid

3166

gid = pwd.getpwnam(group).pw_gid

2478

3167

break

2479

3168

except KeyError:

2480

3169

continue

2484

3173

try:

2485

3174

os.setgid(gid)

2486

3175

os.setuid(uid)

3176

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

2487

3177

except OSError as error:

3178

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

3179

os.strerror(error.errno))

2488

3180

if error.errno != errno.EPERM:

2489

3181

raise

2490

3182

2491

3183

if debug:

2492

3184

# Enable all possible GnuTLS debugging

2493

3185

2494

3186

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

2495

3187

# - GnuTLS manual

2496

gnutls.library.functions.gnutls_global_set_log_level(11)

2497

2498

@gnutls.library.types.gnutls_log_func

3188

gnutls.global_set_log_level(11)

3189

3190

@gnutls.log_func

2499

3191

def debug_gnutls(level, string):

2500

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

2501

2502

(gnutls.library.functions

2503

.gnutls_global_set_log_function(debug_gnutls))

2504

3192

log.debug("GnuTLS: %s",

3193

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

3194

3195

gnutls.global_set_log_function(debug_gnutls)

3196

2505

3197

# Redirect stdin so all checkers get /dev/null

2506

3198

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

2507

3199

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

2508

3200

if null > 2:

2509

3201

os.close(null)

2510

3202

2511

3203

# Need to fork before connecting to D-Bus

2512

3204

if not foreground:

2513

3205

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

2514

3206

daemon()

2515

2516

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

2517

# need to inform gobject that threads will be used.

2518

gobject.threads_init()

2519

3207

3208

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

3209

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

3210

# need to inform GLib that threads will be used.

3211

GLib.threads_init()

3212

2520

3213

global main_loop

2521

3214

# From the Avahi example code

2522

3215

DBusGMainLoop(set_as_default=True)

2523

main_loop = gobject.MainLoop()

3216

main_loop = GLib.MainLoop()

2524

3217

bus = dbus.SystemBus()

2525

3218

# End of Avahi example code

2526

3219

if use_dbus:

2527

3220

try:

2528

3221

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

2529

bus, do_not_queue=True)

2530

old_bus_name = (dbus.service.BusName

2531

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

2532

do_not_queue=True))

2533

except dbus.exceptions.NameExistsException as e:

2534

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

3222

bus,

3223

do_not_queue=True)

3224

old_bus_name = dbus.service.BusName(

3225

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

3226

do_not_queue=True)

3227

except dbus.exceptions.DBusException as e:

3228

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

2535

3229

use_dbus = False

2536

3230

server_settings["use_dbus"] = False

2537

3231

tcp_server.use_dbus = False

2538

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2539

service = AvahiServiceToSyslog(name =

2540

server_settings["servicename"],

2541

servicetype = "_mandos._tcp",

2542

protocol = protocol, bus = bus)

2543

if server_settings["interface"]:

2544

service.interface = (if_nametoindex

2545

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

2546

3232

if zeroconf:

3233

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

3234

service = AvahiServiceToSyslog(

3235

name=server_settings["servicename"],

3236

servicetype="_mandos._tcp",

3237

protocol=protocol,

3238

bus=bus)

3239

if server_settings["interface"]:

3240

service.interface = if_nametoindex(

3241

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

3242

2547

3243

global multiprocessing_manager

2548

3244

multiprocessing_manager = multiprocessing.Manager()

2549

3245

2550

3246

client_class = Client

2551

3247

if use_dbus:

2552

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

2553

3248

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

3249

2554

3250

client_settings = Client.config_parser(client_config)

2555

3251

old_client_settings = {}

2556

3252

clients_data = {}

2557

3253

2558

3254

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

2559

3255

global wnull

2560

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

3256

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

2561

3257

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

2562

3258

# mode

2563

3259

if debug or not foreground:

2564

3260

wnull.close()

2565

3261

2566

3262

# Get client data and settings from last running state.

2567

3263

if server_settings["restore"]:

2568

3264

try:

2569

3265

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

2570

clients_data, old_client_settings = (pickle.load

2571

(stored_state))

3266

if sys.version_info.major == 2:

3267

clients_data, old_client_settings = pickle.load(

3268

stored_state)

3269

else:

3270

bytes_clients_data, bytes_old_client_settings = (

3271

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

3272

# Fix bytes to strings

3273

# clients_data

3274

# .keys()

3275

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

3276

if isinstance(key, bytes)

3277

else key): value

3278

for key, value in

3279

bytes_clients_data.items()}

3280

del bytes_clients_data

3281

for key in clients_data:

3282

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

3283

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

3284

for k, v in

3285

clients_data[key].items()}

3286

clients_data[key] = value

3287

# .client_structure

3288

value["client_structure"] = [

3289

(s.decode("utf-8")

3290

if isinstance(s, bytes)

3291

else s) for s in

3292

value["client_structure"]]

3293

# .name, .host, and .checker_command

3294

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

3295

if isinstance(value[k], bytes):

3296

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

3297

if "key_id" not in value:

3298

value["key_id"] = ""

3299

elif "fingerprint" not in value:

3300

value["fingerprint"] = ""

3301

# old_client_settings

3302

# .keys()

3303

old_client_settings = {

3304

(key.decode("utf-8")

3305

if isinstance(key, bytes)

3306

else key): value

3307

for key, value in

3308

bytes_old_client_settings.items()}

3309

del bytes_old_client_settings

3310

# .host and .checker_command

3311

for value in old_client_settings.values():

3312

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

3313

if isinstance(value[attribute], bytes):

3314

value[attribute] = (value[attribute]

3315

.decode("utf-8"))

2572

3316

os.remove(stored_state_path)

2573

3317

except IOError as e:

2574

3318

if e.errno == errno.ENOENT:

2575

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

2576

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

3319

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

3320

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

2577

3321

else:

2578

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

2579

exc_info=e)

3322

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

3323

exc_info=e)

2580

3324

raise

2581

3325

except EOFError as e:

2582

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

2583

"EOFError:", exc_info=e)

2584

3326

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

3327

exc_info=e)

3328

2585

3329

with PGPEngine() as pgp:

2586

for client_name, client in clients_data.iteritems():

3330

for client_name, client in clients_data.items():

2587

3331

# Skip removed clients

2588

3332

if client_name not in client_settings:

2589

3333

continue

2590

3334

2591

3335

# Decide which value to use after restoring saved state.

2592

3336

# We have three different values: Old config file,

2593

3337

# new config file, and saved state.

2598

3342

# For each value in new config, check if it

2599

3343

# differs from the old config value (Except for

2600

3344

# the "secret" attribute)

2601

if (name != "secret" and

2602

value != old_client_settings[client_name]

2603

[name]):

3345

if (name != "secret"

3346

and (value !=

3347

old_client_settings[client_name][name])):

2604

3348

client[name] = value

2605

3349

except KeyError:

2606

3350

pass

2607

3351

2608

3352

# Clients who has passed its expire date can still be

2609

# enabled if its last checker was successful. Clients

3353

# enabled if its last checker was successful. A Client

2610

3354

# whose checker succeeded before we stored its state is

2611

3355

# assumed to have successfully run all checkers during

2612

3356

# downtime.

2613

3357

if client["enabled"]:

2614

3358

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

2615

3359

if not client["last_checked_ok"]:

2616

logger.warning(

2617

"disabling client {0} - Client never "

2618

"performed a successful checker"

2619

.format(client_name))

3360

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

3361

" never performed a successful"

3362

" checker", client_name)

2620

3363

client["enabled"] = False

2621

3364

elif client["last_checker_status"] != 0:

2622

logger.warning(

2623

"disabling client {0} - Client "

2624

"last checker failed with error code {1}"

2625

.format(client_name,

2626

client["last_checker_status"]))

3365

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

3366

" last checker failed with error"

3367

" code %s", client_name,

3368

client["last_checker_status"])

2627

3369

client["enabled"] = False

2628

3370

else:

2629

client["expires"] = (datetime.datetime

2630

.utcnow()

2631

+ client["timeout"])

2632

logger.debug("Last checker succeeded,"

2633

" keeping {0} enabled"

2634

.format(client_name))

3371

client["expires"] = (

3372

datetime.datetime.utcnow()

3373

+ client["timeout"])

3374

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

3375

" enabled", client_name)

2635

3376

try:

2636

client["secret"] = (

2637

pgp.decrypt(client["encrypted_secret"],

2638

client_settings[client_name]

2639

["secret"]))

3377

client["secret"] = pgp.decrypt(

3378

client["encrypted_secret"],

3379

client_settings[client_name]["secret"])

2640

3380

except PGPError:

2641

3381

# If decryption fails, we use secret from new settings

2642

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

2643

.format(client_name))

2644

client["secret"] = (

2645

client_settings[client_name]["secret"])

2646

3382

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

3383

client_name)

3384

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

3385

["secret"])

3386

2647

3387

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

2648

3388

for client_name in (set(old_client_settings)

2649

3389

- set(client_settings)):

2651

3391

for client_name in (set(client_settings)

2652

3392

- set(old_client_settings)):

2653

3393

clients_data[client_name] = client_settings[client_name]

2654

3394

2655

3395

# Create all client objects

2656

for client_name, client in clients_data.iteritems():

3396

for client_name, client in clients_data.items():

2657

3397

tcp_server.clients[client_name] = client_class(

2658

name = client_name, settings = client,

2659

server_settings = server_settings)

2660

3398

name=client_name,

3399

settings=client,

3400

server_settings=server_settings)

3401

2661

3402

if not tcp_server.clients:

2662

logger.warning("No clients defined")

2663

3403

log.warning("No clients defined")

3404

2664

3405

if not foreground:

2665

3406

if pidfile is not None:

3407

pid = os.getpid()

2666

3408

try:

2667

3409

with pidfile:

2668

pid = os.getpid()

2669

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

3410

print(pid, file=pidfile)

2670

3411

except IOError:

2671

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

2672

pidfilename, pid)

3412

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

3413

pidfilename, pid)

2673

3414

del pidfile

2674

3415

del pidfilename

2675

2676

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

2677

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

2678

3416

3417

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

3418

GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,

3419

lambda: main_loop.quit() and False)

3420

2679

3421

if use_dbus:

2680

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

2681

"se.bsnet.fukt.Mandos"})

2682

class MandosDBusService(DBusObjectWithProperties):

3422

3423

@alternate_dbus_interfaces(

3424

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

3425

class MandosDBusService(DBusObjectWithObjectManager):

2683

3426

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

3427

2684

3428

def __init__(self):

2685

3429

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

3430

2686

3431

_interface = "se.recompile.Mandos"

2687

2688

@dbus_interface_annotations(_interface)

2689

def _foo(self):

2690

return { "org.freedesktop.DBus.Property"

2691

".EmitsChangedSignal":

2692

"false"}

2693

3432

2694

3433

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

2695

3434

def ClientAdded(self, objpath):

2696

3435

"D-Bus signal"

2697

3436

pass

2698

3437

2699

3438

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

2700

def ClientNotFound(self, fingerprint, address):

3439

def ClientNotFound(self, key_id, address):

2701

3440

"D-Bus signal"

2702

3441

pass

2703

3442

3443

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

3444

"true"})

2704

3445

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

2705

3446

def ClientRemoved(self, objpath, name):

2706

3447

"D-Bus signal"

2707

3448

pass

2708

3449

3450

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

3451

"true"})

2709

3452

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

2710

3453

def GetAllClients(self):

2711

3454

"D-Bus method"

2712

return dbus.Array(c.dbus_object_path

2713

for c in

2714

tcp_server.clients.itervalues())

2715

3455

return dbus.Array(c.dbus_object_path for c in

3456

tcp_server.clients.values())

3457

3458

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

3459

"true"})

2716

3460

@dbus.service.method(_interface,

2717

3461

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

2718

3462

def GetAllClientsWithProperties(self):

2719

3463

"D-Bus method"

2720

3464

return dbus.Dictionary(

2721

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

2722

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

3465

{c.dbus_object_path: c.GetAll(

3466

"se.recompile.Mandos.Client")

3467

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

2723

3468

signature="oa{sv}")

2724

3469

2725

3470

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

2726

3471

def RemoveClient(self, object_path):

2727

3472

"D-Bus method"

2728

for c in tcp_server.clients.itervalues():

3473

for c in tcp_server.clients.values():

2729

3474

if c.dbus_object_path == object_path:

2730

3475

del tcp_server.clients[c.name]

2731

3476

c.remove_from_connection()

2732

# Don't signal anything except ClientRemoved

3477

# Don't signal the disabling

2733

3478

c.disable(quiet=True)

2734

# Emit D-Bus signal

2735

self.ClientRemoved(object_path, c.name)

3479

# Emit D-Bus signal for removal

3480

self.client_removed_signal(c)

2736

3481

return

2737

3482

raise KeyError(object_path)

2738

3483

2739

3484

del _interface

2740

3485

3486

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

3487

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

3488

def GetManagedObjects(self):

3489

"""D-Bus method"""

3490

return dbus.Dictionary(

3491

{client.dbus_object_path:

3492

dbus.Dictionary(

3493

{interface: client.GetAll(interface)

3494

for interface in

3495

client._get_all_interface_names()})

3496

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

3497

3498

def client_added_signal(self, client):

3499

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

3500

if use_dbus:

3501

# New standard signal

3502

self.InterfacesAdded(

3503

client.dbus_object_path,

3504

dbus.Dictionary(

3505

{interface: client.GetAll(interface)

3506

for interface in

3507

client._get_all_interface_names()}))

3508

# Old signal

3509

self.ClientAdded(client.dbus_object_path)

3510

3511

def client_removed_signal(self, client):

3512

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

3513

if use_dbus:

3514

# New standard signal

3515

self.InterfacesRemoved(

3516

client.dbus_object_path,

3517

client._get_all_interface_names())

3518

# Old signal

3519

self.ClientRemoved(client.dbus_object_path,

3520

client.name)

3521

2741

3522

mandos_dbus_service = MandosDBusService()

2742

3523

3524

# Save modules to variables to exempt the modules from being

3525

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

3526

mp = multiprocessing

3527

wn = wnull

3528

2743

3529

def cleanup():

2744

3530

"Cleanup function; run on exit"

2745

service.cleanup()

2746

2747

multiprocessing.active_children()

2748

wnull.close()

3531

if zeroconf:

3532

service.cleanup()

3533

3534

mp.active_children()

3535

wn.close()

2749

3536

if not (tcp_server.clients or client_settings):

2750

3537

return

2751

3538

2752

3539

# Store client before exiting. Secrets are encrypted with key

2753

3540

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

2754

3541

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

2755

3542

clients = {}

2756

3543

with PGPEngine() as pgp:

2757

for client in tcp_server.clients.itervalues():

3544

for client in tcp_server.clients.values():

2758

3545

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

2759

3546

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

2760

3547

key)

2761

3548

client_dict = {}

2762

3549

2763

3550

# A list of attributes that can not be pickled

2764

3551

# + secret.

2765

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

2766

"checker", "server_settings"))

2767

for name, typ in (inspect.getmembers

2768

(dbus.service.Object)):

3552

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

3553

"checker", "server_settings"}

3554

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

3555

.Object):

2769

3556

exclude.add(name)

2770

3557

2771

3558

client_dict["encrypted_secret"] = (client

2772

3559

.encrypted_secret)

2773

3560

for attr in client.client_structure:

2774

3561

if attr not in exclude:

2775

3562

client_dict[attr] = getattr(client, attr)

2776

3563

2777

3564

clients[client.name] = client_dict

2778

3565

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

2779

3566

2780

3567

try:

2781

with (tempfile.NamedTemporaryFile

2782

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

2783

dir=os.path.dirname(stored_state_path),

2784

delete=False)) as stored_state:

2785

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

2786

tempname=stored_state.name

3568

with tempfile.NamedTemporaryFile(

3569

mode="wb",

3570

suffix=".pickle",

3571

prefix="clients-",

3572

dir=os.path.dirname(stored_state_path),

3573

delete=False) as stored_state:

3574

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

3575

protocol=2)

3576

tempname = stored_state.name

2787

3577

os.rename(tempname, stored_state_path)

2788

3578

except (IOError, OSError) as e:

2789

3579

if not debug:

2792

3582

except NameError:

2793

3583

pass

2794

3584

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

2795

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

2796

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

3585

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

3586

os.strerror(e.errno))

2797

3587

else:

2798

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

2799

exc_info=e)

3588

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

3589

exc_info=e)

2800

3590

raise

2801

3591

2802

3592

# Delete all clients, and settings from config

2803

3593

while tcp_server.clients:

2804

3594

name, client = tcp_server.clients.popitem()

2805

3595

if use_dbus:

2806

3596

client.remove_from_connection()

2807

# Don't signal anything except ClientRemoved

3597

# Don't signal the disabling

2808

3598

client.disable(quiet=True)

3599

# Emit D-Bus signal for removal

2809

3600

if use_dbus:

2810

# Emit D-Bus signal

2811

mandos_dbus_service.ClientRemoved(client

2812

.dbus_object_path,

2813

client.name)

3601

mandos_dbus_service.client_removed_signal(client)

2814

3602

client_settings.clear()

2815

3603

2816

3604

atexit.register(cleanup)

2817

2818

for client in tcp_server.clients.itervalues():

3605

3606

for client in tcp_server.clients.values():

2819

3607

if use_dbus:

2820

# Emit D-Bus signal

2821

mandos_dbus_service.ClientAdded(client.dbus_object_path)

3608

# Emit D-Bus signal for adding

3609

mandos_dbus_service.client_added_signal(client)

2822

3610

# Need to initiate checking of clients

2823

3611

if client.enabled:

2824

3612

client.init_checker()

2825

3613

2826

3614

tcp_server.enable()

2827

3615

tcp_server.server_activate()

2828

3616

2829

3617

# Find out what port we got

2830

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

3618

if zeroconf:

3619

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

2831

3620

if use_ipv6:

2832

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

2833

" flowinfo %d, scope_id %d",

2834

*tcp_server.socket.getsockname())

3621

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

3622

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

2835

3623

else: # IPv4

2836

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

2837

*tcp_server.socket.getsockname())

2838

2839

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

2840

3624

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

3625

*tcp_server.socket.getsockname())

3626

3627

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

3628

2841

3629

try:

2842

# From the Avahi example code

2843

try:

2844

service.activate()

2845

except dbus.exceptions.DBusException as error:

2846

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

2847

cleanup()

2848

sys.exit(1)

2849

# End of Avahi example code

2850

2851

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

2852

lambda *args, **kwargs:

2853

(tcp_server.handle_request

2854

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

2855

2856

logger.debug("Starting main loop")

3630

if zeroconf:

3631

# From the Avahi example code

3632

try:

3633

service.activate()

3634

except dbus.exceptions.DBusException as error:

3635

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

3636

cleanup()

3637

sys.exit(1)

3638

# End of Avahi example code

3639

3640

GLib.io_add_watch(

3641

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

3642

GLib.PRIORITY_DEFAULT, GLib.IO_IN,

3643

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

3644

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

3645

3646

log.debug("Starting main loop")

2857

3647

main_loop.run()

2858

3648

except AvahiError as error:

2859

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

3649

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

2860

3650

cleanup()

2861

3651

sys.exit(1)

2862

3652

except KeyboardInterrupt:

2863

3653

if debug:

2864

3654

print("", file=sys.stderr)

2865

logger.debug("Server received KeyboardInterrupt")

2866

logger.debug("Server exiting")

3655

log.debug("Server received KeyboardInterrupt")

3656

log.debug("Server exiting")

2867

3657

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

2868

3658

cleanup()

2869

3659

2870

if __name__ == '__main__':

2871

main()

3660

3661

def parse_test_args():

3662

# type: () -> argparse.Namespace

3663

parser = argparse.ArgumentParser(add_help=False)

3664

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

3665

parser.add_argument("--prefix", )

3666

args, unknown_args = parser.parse_known_args()

3667

if args.check:

3668

# Remove test options from sys.argv

3669

sys.argv[1:] = unknown_args

3670

return args

3671

3672

# Add all tests from doctest strings

3673

def load_tests(loader, tests, none):

3674

import doctest

3675

tests.addTests(doctest.DocTestSuite())

3676

return tests

3677

3678

if __name__ == "__main__":

3679

options = parse_test_args()

3680

try:

3681

if options.check:

3682

extra_test_prefix = options.prefix

3683

if extra_test_prefix is not None:

3684

if not (unittest.main(argv=[""], exit=False)

3685

.result.wasSuccessful()):

3686

sys.exit(1)

3687

class ExtraTestLoader(unittest.TestLoader):

3688

testMethodPrefix = extra_test_prefix

3689

# Call using ./scriptname --test [--verbose]

3690

unittest.main(argv=[""], testLoader=ExtraTestLoader())

3691

else:

3692

unittest.main(argv=[""])

3693

else:

3694

main()

3695

finally:

3696

logging.shutdown()

3697

3698

# Local Variables:

3699

# run-tests:

3700

# (lambda (&optional extra)

3701

# (if (not (funcall run-tests-in-test-buffer default-directory

3702

# extra))

3703

# (funcall show-test-buffer-in-test-window)

3704

# (funcall remove-test-window)

3705

# (if extra (message "Extra tests run successfully!"))))

3706

# run-tests-in-test-buffer:

3707

# (lambda (dir &optional extra)

3708

# (with-current-buffer (get-buffer-create "*Test*")

3709

# (setq buffer-read-only nil

3710

# default-directory dir)

3711

# (erase-buffer)

3712

# (compilation-mode))

3713

# (let ((process-result

3714

# (let ((inhibit-read-only t))

3715

# (process-file-shell-command

3716

# (funcall get-command-line extra) nil "*Test*"))))

3717

# (and (numberp process-result)

3718

# (= process-result 0))))

3719

# get-command-line:

3720

# (lambda (&optional extra)

3721

# (let ((quoted-script

3722

# (shell-quote-argument (funcall get-script-name))))

3723

# (format

3724

# (concat "%s --check" (if extra " --prefix=atest" ""))

3725

# quoted-script)))

3726

# get-script-name:

3727

# (lambda ()

3728

# (if (fboundp 'file-local-name)

3729

# (file-local-name (buffer-file-name))

3730

# (or (file-remote-p (buffer-file-name) 'localname)

3731

# (buffer-file-name))))

3732

# remove-test-window:

3733

# (lambda ()

3734

# (let ((test-window (get-buffer-window "*Test*")))

3735

# (if test-window (delete-window test-window))))

3736

# show-test-buffer-in-test-window:

3737

# (lambda ()

3738

# (when (not (get-buffer-window-list "*Test*"))

3739

# (setq next-error-last-buffer (get-buffer "*Test*"))

3740

# (let* ((side (if (>= (window-width) 146) 'right 'bottom))

3741

# (display-buffer-overriding-action

3742

# `((display-buffer-in-side-window) (side . ,side)

3743

# (window-height . fit-window-to-buffer)

3744

# (window-width . fit-window-to-buffer))))

3745

# (display-buffer "*Test*"))))

3746

# eval:

3747

# (progn

3748

# (let* ((run-extra-tests (lambda () (interactive)

3749

# (funcall run-tests t)))

3750

# (inner-keymap `(keymap (116 . ,run-extra-tests))) ; t

3751

# (outer-keymap `(keymap (3 . ,inner-keymap)))) ; C-c

3752

# (setq minor-mode-overriding-map-alist

3753

# (cons `(run-tests . ,outer-keymap)

3754

# minor-mode-overriding-map-alist)))

3755

# (add-hook 'after-save-hook run-tests 90 t))

3756

# End: