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- Committer: Björn Påhlsson
- Date: 2011-11-11 14:14:24 UTC
- mto: (518.2.5 persistent-state-gpgme)
- mto: This revision was merged to the branch mainline in revision 524.
- Revision ID: belorn@fukt.bsnet.se-20111111141424-405blpt3kwrla6lw
new signal: NewRequest(IP_address)
Sent when a client ask for its password
Sent when a client ask for its password
- files added:
- DBUS-API
- debian/source
- files modified:
- .bzrignore
added
removed
mandos
11
11
# "AvahiService" class, and some lines in "main".
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12
#
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# Everything else is
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# Copyright © 2008,2009 Teddy Hogeborn
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# Copyright © 2008,2009 Björn Påhlsson
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# Copyright © 2008-2011 Teddy Hogeborn
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# Copyright © 2008-2011 Björn Påhlsson
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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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# along with this program. If not, see
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# <http://www.gnu.org/licenses/>.
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#
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# Contact the authors at <mandos@fukt.bsnet.se>.
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# Contact the authors at <mandos@recompile.se>.
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#
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from __future__ import division, with_statement, absolute_import
34
from __future__ import (division, absolute_import, print_function,
35
unicode_literals)
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36
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import SocketServer as socketserver
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import socket
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import optparse
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import argparse
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import datetime
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import errno
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import gnutls.crypto
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import logging
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import logging.handlers
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import pwd
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from contextlib import closing
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import contextlib
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import struct
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import fcntl
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import functools
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import cPickle as pickle
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import multiprocessing
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import types
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import hashlib
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import dbus
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import dbus.service
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74
import ctypes.util
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import xml.dom.minidom
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import inspect
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import Crypto.Cipher.AES
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78
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try:
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80
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
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85
SO_BINDTODEVICE = None
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version = "1.0.14"
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logger = logging.Logger(u'mandos')
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version = "1.4.1"
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logger = logging.getLogger()
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stored_state_path = "/var/lib/mandos/clients.pickle"
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85
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syslogger = (logging.handlers.SysLogHandler
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(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
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address = "/dev/log"))
95
address = str("/dev/log")))
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syslogger.setFormatter(logging.Formatter
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(u'Mandos [%(process)d]: %(levelname)s:'
90
u' %(message)s'))
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('Mandos [%(process)d]: %(levelname)s:'
98
' %(message)s'))
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logger.addHandler(syslogger)
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100
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console = logging.StreamHandler()
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console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
95
u' %(levelname)s:'
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u' %(message)s'))
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console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
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' [%(process)d]:'
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' %(levelname)s:'
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' %(message)s'))
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logger.addHandler(console)
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class AvahiError(Exception):
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def __init__(self, value, *args, **kwargs):
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self.value = value
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126
Attributes:
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interface: integer; avahi.IF_UNSPEC or an interface index.
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128
Used to optionally bind to the specified interface.
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name: string; Example: u'Mandos'
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type: string; Example: u'_mandos._tcp'.
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name: string; Example: 'Mandos'
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type: string; Example: '_mandos._tcp'.
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See <http://www.dns-sd.org/ServiceTypes.html>
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port: integer; what port to announce
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TXT: list of strings; TXT record for the service
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142
"""
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def __init__(self, interface = avahi.IF_UNSPEC, name = None,
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servicetype = None, port = None, TXT = None,
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domain = u"", host = u"", max_renames = 32768,
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domain = "", host = "", max_renames = 32768,
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protocol = avahi.PROTO_UNSPEC, bus = None):
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self.interface = interface
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self.name = name
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157
self.group = None # our entry group
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self.server = None
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self.bus = bus
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self.entry_group_state_changed_match = None
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def rename(self):
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"""Derived from the Avahi example code"""
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if self.rename_count >= self.max_renames:
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logger.critical(u"No suitable Zeroconf service name found"
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u" after %i retries, exiting.",
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logger.critical("No suitable Zeroconf service name found"
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" after %i retries, exiting.",
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self.rename_count)
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raise AvahiServiceError(u"Too many renames")
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self.name = self.server.GetAlternativeServiceName(self.name)
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logger.info(u"Changing Zeroconf service name to %r ...",
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unicode(self.name))
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syslogger.setFormatter(logging.Formatter
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(u'Mandos (%s) [%%(process)d]:'
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u' %%(levelname)s: %%(message)s'
163
% self.name))
167
raise AvahiServiceError("Too many renames")
168
self.name = unicode(self.server
169
.GetAlternativeServiceName(self.name))
170
logger.info("Changing Zeroconf service name to %r ...",
171
self.name)
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172
self.remove()
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self.add()
173
try:
174
self.add()
175
except dbus.exceptions.DBusException as error:
176
logger.critical("DBusException: %s", error)
177
self.cleanup()
178
os._exit(1)
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self.rename_count += 1
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180
def remove(self):
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"""Derived from the Avahi example code"""
182
if self.entry_group_state_changed_match is not None:
183
self.entry_group_state_changed_match.remove()
184
self.entry_group_state_changed_match = None
169
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if self.group is not None:
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self.group.Reset()
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def add(self):
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"""Derived from the Avahi example code"""
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self.remove()
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if self.group is None:
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191
self.group = dbus.Interface(
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self.bus.get_object(avahi.DBUS_NAME,
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193
self.server.EntryGroupNew()),
177
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avahi.DBUS_INTERFACE_ENTRY_GROUP)
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self.group.connect_to_signal('StateChanged',
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self
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.entry_group_state_changed)
181
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
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self.entry_group_state_changed_match = (
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self.group.connect_to_signal(
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'StateChanged', self.entry_group_state_changed))
198
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
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self.name, self.type)
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self.group.AddService(
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self.interface,
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self.group.Commit()
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def entry_group_state_changed(self, state, error):
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"""Derived from the Avahi example code"""
194
logger.debug(u"Avahi state change: %i", state)
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logger.debug("Avahi entry group state change: %i", state)
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if state == avahi.ENTRY_GROUP_ESTABLISHED:
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logger.debug(u"Zeroconf service established.")
214
logger.debug("Zeroconf service established.")
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215
elif state == avahi.ENTRY_GROUP_COLLISION:
199
logger.warning(u"Zeroconf service name collision.")
216
logger.info("Zeroconf service name collision.")
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self.rename()
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elif state == avahi.ENTRY_GROUP_FAILURE:
202
logger.critical(u"Avahi: Error in group state changed %s",
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logger.critical("Avahi: Error in group state changed %s",
203
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unicode(error))
204
raise AvahiGroupError(u"State changed: %s"
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raise AvahiGroupError("State changed: %s"
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% unicode(error))
206
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def cleanup(self):
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"""Derived from the Avahi example code"""
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if self.group is not None:
209
self.group.Free()
226
try:
227
self.group.Free()
228
except (dbus.exceptions.UnknownMethodException,
229
dbus.exceptions.DBusException) as e:
230
pass
210
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self.group = None
211
def server_state_changed(self, state):
232
self.remove()
233
def server_state_changed(self, state, error=None):
212
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"""Derived from the Avahi example code"""
213
if state == avahi.SERVER_COLLISION:
214
logger.error(u"Zeroconf server name collision")
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self.remove()
235
logger.debug("Avahi server state change: %i", state)
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bad_states = { avahi.SERVER_INVALID:
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"Zeroconf server invalid",
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avahi.SERVER_REGISTERING: None,
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avahi.SERVER_COLLISION:
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"Zeroconf server name collision",
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avahi.SERVER_FAILURE:
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"Zeroconf server failure" }
243
if state in bad_states:
244
if bad_states[state] is not None:
245
if error is None:
246
logger.error(bad_states[state])
247
else:
248
logger.error(bad_states[state] + ": %r", error)
249
self.cleanup()
216
250
elif state == avahi.SERVER_RUNNING:
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self.add()
252
else:
253
if error is None:
254
logger.debug("Unknown state: %r", state)
255
else:
256
logger.debug("Unknown state: %r: %r", state, error)
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def activate(self):
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"""Derived from the Avahi example code"""
220
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if self.server is None:
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self.server = dbus.Interface(
222
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self.bus.get_object(avahi.DBUS_NAME,
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avahi.DBUS_PATH_SERVER),
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avahi.DBUS_PATH_SERVER,
263
follow_name_owner_changes=True),
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264
avahi.DBUS_INTERFACE_SERVER)
225
self.server.connect_to_signal(u"StateChanged",
265
self.server.connect_to_signal("StateChanged",
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self.server_state_changed)
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self.server_state_changed(self.server.GetState())
228
268
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class AvahiServiceToSyslog(AvahiService):
270
def rename(self):
271
"""Add the new name to the syslog messages"""
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ret = AvahiService.rename(self)
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syslogger.setFormatter(logging.Formatter
274
('Mandos (%s) [%%(process)d]:'
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' %%(levelname)s: %%(message)s'
276
% self.name))
277
return ret
229
278
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def _timedelta_to_milliseconds(td):
280
"Convert a datetime.timedelta() to milliseconds"
281
return ((td.days * 24 * 60 * 60 * 1000)
282
+ (td.seconds * 1000)
283
+ (td.microseconds // 1000))
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230
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class Client(object):
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"""A representation of a client host served by this server.
232
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233
288
Attributes:
234
name: string; from the config file, used in log messages and
235
D-Bus identifiers
236
fingerprint: string (40 or 32 hexadecimal digits); used to
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uniquely identify the client
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secret: bytestring; sent verbatim (over TLS) to client
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host: string; available for use by the checker command
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created: datetime.datetime(); (UTC) object creation
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last_enabled: datetime.datetime(); (UTC)
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enabled: bool()
243
last_checked_ok: datetime.datetime(); (UTC) or None
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timeout: datetime.timedelta(); How long from last_checked_ok
245
until this client is invalid
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interval: datetime.timedelta(); How often to start a new checker
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disable_hook: If set, called by disable() as disable_hook(self)
289
_approved: bool(); 'None' if not yet approved/disapproved
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approval_delay: datetime.timedelta(); Time to wait for approval
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approval_duration: datetime.timedelta(); Duration of one approval
248
292
checker: subprocess.Popen(); a running checker process used
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293
to see if the client lives.
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'None' if no process is running.
251
checker_initiator_tag: a gobject event source tag, or None
252
disable_initiator_tag: - '' -
253
checker_callback_tag: - '' -
254
checker_command: string; External command which is run to check if
255
client lives. %() expansions are done at
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checker_callback_tag: a gobject event source tag, or None
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checker_command: string; External command which is run to check
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if client lives. %() expansions are done at
256
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runtime with vars(self) as dict, so that for
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299
instance %(name)s can be used in the command.
300
checker_initiator_tag: a gobject event source tag, or None
301
created: datetime.datetime(); (UTC) object creation
302
client_structure: Object describing what attributes a client has
303
and is used for storing the client at exit
258
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current_checker_command: string; current running checker_command
305
disable_initiator_tag: a gobject event source tag, or None
306
enabled: bool()
307
fingerprint: string (40 or 32 hexadecimal digits); used to
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uniquely identify the client
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host: string; available for use by the checker command
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interval: datetime.timedelta(); How often to start a new checker
311
last_approval_request: datetime.datetime(); (UTC) or None
312
last_checked_ok: datetime.datetime(); (UTC) or None
313
last_checker_status: integer between 0 and 255 reflecting exit status
314
of last checker. -1 reflect crashed checker,
315
or None.
316
last_enabled: datetime.datetime(); (UTC)
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name: string; from the config file, used in log messages and
318
D-Bus identifiers
319
secret: bytestring; sent verbatim (over TLS) to client
320
timeout: datetime.timedelta(); How long from last_checked_ok
321
until this client is disabled
322
extended_timeout: extra long timeout when password has been sent
323
runtime_expansions: Allowed attributes for runtime expansion.
324
expires: datetime.datetime(); time (UTC) when a client will be
325
disabled, or None
259
326
"""
260
327
261
@staticmethod
262
def _timedelta_to_milliseconds(td):
263
"Convert a datetime.timedelta() to milliseconds"
264
return ((td.days * 24 * 60 * 60 * 1000)
265
+ (td.seconds * 1000)
266
+ (td.microseconds // 1000))
328
runtime_expansions = ("approval_delay", "approval_duration",
329
"created", "enabled", "fingerprint",
330
"host", "interval", "last_checked_ok",
331
"last_enabled", "name", "timeout")
267
332
268
333
def timeout_milliseconds(self):
269
334
"Return the 'timeout' attribute in milliseconds"
270
return self._timedelta_to_milliseconds(self.timeout)
335
return _timedelta_to_milliseconds(self.timeout)
336
337
def extended_timeout_milliseconds(self):
338
"Return the 'extended_timeout' attribute in milliseconds"
339
return _timedelta_to_milliseconds(self.extended_timeout)
271
340
272
341
def interval_milliseconds(self):
273
342
"Return the 'interval' attribute in milliseconds"
274
return self._timedelta_to_milliseconds(self.interval)
275
276
def __init__(self, name = None, disable_hook=None, config=None):
343
return _timedelta_to_milliseconds(self.interval)
344
345
def approval_delay_milliseconds(self):
346
return _timedelta_to_milliseconds(self.approval_delay)
347
348
def __init__(self, name = None, config=None):
277
349
"""Note: the 'checker' key in 'config' sets the
278
350
'checker_command' attribute and *not* the 'checker'
279
351
attribute."""
280
352
self.name = name
281
353
if config is None:
282
354
config = {}
283
logger.debug(u"Creating client %r", self.name)
355
logger.debug("Creating client %r", self.name)
284
356
# Uppercase and remove spaces from fingerprint for later
285
357
# comparison purposes with return value from the fingerprint()
286
358
# function
287
self.fingerprint = (config[u"fingerprint"].upper()
288
.replace(u" ", u""))
289
logger.debug(u" Fingerprint: %s", self.fingerprint)
290
if u"secret" in config:
291
self.secret = config[u"secret"].decode(u"base64")
292
elif u"secfile" in config:
293
with closing(open(os.path.expanduser
294
(os.path.expandvars
295
(config[u"secfile"])),
296
"rb")) as secfile:
359
self.fingerprint = (config["fingerprint"].upper()
360
.replace(" ", ""))
361
logger.debug(" Fingerprint: %s", self.fingerprint)
362
if "secret" in config:
363
self.secret = config["secret"].decode("base64")
364
elif "secfile" in config:
365
with open(os.path.expanduser(os.path.expandvars
366
(config["secfile"])),
367
"rb") as secfile:
297
368
self.secret = secfile.read()
298
369
else:
299
raise TypeError(u"No secret or secfile for client %s"
370
raise TypeError("No secret or secfile for client %s"
300
371
% self.name)
301
self.host = config.get(u"host", u"")
372
self.host = config.get("host", "")
302
373
self.created = datetime.datetime.utcnow()
303
self.enabled = False
304
self.last_enabled = None
374
self.enabled = True
375
self.last_approval_request = None
376
self.last_enabled = datetime.datetime.utcnow()
305
377
self.last_checked_ok = None
306
self.timeout = string_to_delta(config[u"timeout"])
307
self.interval = string_to_delta(config[u"interval"])
308
self.disable_hook = disable_hook
378
self.last_checker_status = None
379
self.timeout = string_to_delta(config["timeout"])
380
self.extended_timeout = string_to_delta(config
381
["extended_timeout"])
382
self.interval = string_to_delta(config["interval"])
309
383
self.checker = None
310
384
self.checker_initiator_tag = None
311
385
self.disable_initiator_tag = None
386
self.expires = datetime.datetime.utcnow() + self.timeout
312
387
self.checker_callback_tag = None
313
self.checker_command = config[u"checker"]
388
self.checker_command = config["checker"]
314
389
self.current_checker_command = None
315
self.last_connect = None
390
self._approved = None
391
self.approved_by_default = config.get("approved_by_default",
392
True)
393
self.approvals_pending = 0
394
self.approval_delay = string_to_delta(
395
config["approval_delay"])
396
self.approval_duration = string_to_delta(
397
config["approval_duration"])
398
self.changedstate = (multiprocessing_manager
399
.Condition(multiprocessing_manager
400
.Lock()))
401
self.client_structure = [attr for attr in self.__dict__.iterkeys() if not attr.startswith("_")]
402
self.client_structure.append("client_structure")
403
404
405
for name, t in inspect.getmembers(type(self),
406
lambda obj: isinstance(obj, property)):
407
if not name.startswith("_"):
408
self.client_structure.append(name)
409
410
# Send notice to process children that client state has changed
411
def send_changedstate(self):
412
with self.changedstate:
413
self.changedstate.notify_all()
316
414
317
415
def enable(self):
318
416
"""Start this client's checker and timeout hooks"""
319
if getattr(self, u"enabled", False):
417
if getattr(self, "enabled", False):
320
418
# Already enabled
321
419
return
420
self.send_changedstate()
421
self.expires = datetime.datetime.utcnow() + self.timeout
422
self.enabled = True
322
423
self.last_enabled = datetime.datetime.utcnow()
424
self.init_checker()
425
426
def disable(self, quiet=True):
427
"""Disable this client."""
428
if not getattr(self, "enabled", False):
429
return False
430
if not quiet:
431
self.send_changedstate()
432
if not quiet:
433
logger.info("Disabling client %s", self.name)
434
if getattr(self, "disable_initiator_tag", False):
435
gobject.source_remove(self.disable_initiator_tag)
436
self.disable_initiator_tag = None
437
self.expires = None
438
if getattr(self, "checker_initiator_tag", False):
439
gobject.source_remove(self.checker_initiator_tag)
440
self.checker_initiator_tag = None
441
self.stop_checker()
442
self.enabled = False
443
# Do not run this again if called by a gobject.timeout_add
444
return False
445
446
def __del__(self):
447
self.disable()
448
449
def init_checker(self):
323
450
# Schedule a new checker to be started an 'interval' from now,
324
451
# and every interval from then on.
325
452
self.checker_initiator_tag = (gobject.timeout_add
329
456
self.disable_initiator_tag = (gobject.timeout_add
330
457
(self.timeout_milliseconds(),
331
458
self.disable))
332
self.enabled = True
333
459
# Also start a new checker *right now*.
334
460
self.start_checker()
335
336
def disable(self, quiet=True):
337
"""Disable this client."""
338
if not getattr(self, "enabled", False):
339
return False
340
if not quiet:
341
logger.info(u"Disabling client %s", self.name)
342
if getattr(self, u"disable_initiator_tag", False):
343
gobject.source_remove(self.disable_initiator_tag)
344
self.disable_initiator_tag = None
345
if getattr(self, u"checker_initiator_tag", False):
346
gobject.source_remove(self.checker_initiator_tag)
347
self.checker_initiator_tag = None
348
self.stop_checker()
349
if self.disable_hook:
350
self.disable_hook(self)
351
self.enabled = False
352
# Do not run this again if called by a gobject.timeout_add
353
return False
354
355
def __del__(self):
356
self.disable_hook = None
357
self.disable()
358
461
462
359
463
def checker_callback(self, pid, condition, command):
360
464
"""The checker has completed, so take appropriate actions."""
361
465
self.checker_callback_tag = None
362
466
self.checker = None
363
467
if os.WIFEXITED(condition):
364
exitstatus = os.WEXITSTATUS(condition)
365
if exitstatus == 0:
366
logger.info(u"Checker for %(name)s succeeded",
468
self.last_checker_status = os.WEXITSTATUS(condition)
469
if self.last_checker_status == 0:
470
logger.info("Checker for %(name)s succeeded",
367
471
vars(self))
368
472
self.checked_ok()
369
473
else:
370
logger.info(u"Checker for %(name)s failed",
474
logger.info("Checker for %(name)s failed",
371
475
vars(self))
372
476
else:
373
logger.warning(u"Checker for %(name)s crashed?",
477
self.last_checker_status = -1
478
logger.warning("Checker for %(name)s crashed?",
374
479
vars(self))
375
480
376
def checked_ok(self):
481
def checked_ok(self, timeout=None):
377
482
"""Bump up the timeout for this client.
378
483
379
484
This should only be called when the client has been seen,
380
485
alive and well.
381
486
"""
487
if timeout is None:
488
timeout = self.timeout
382
489
self.last_checked_ok = datetime.datetime.utcnow()
383
gobject.source_remove(self.disable_initiator_tag)
384
self.disable_initiator_tag = (gobject.timeout_add
385
(self.timeout_milliseconds(),
386
self.disable))
490
if self.disable_initiator_tag is not None:
491
gobject.source_remove(self.disable_initiator_tag)
492
if getattr(self, "enabled", False):
493
self.disable_initiator_tag = (gobject.timeout_add
494
(_timedelta_to_milliseconds
495
(timeout), self.disable))
496
self.expires = datetime.datetime.utcnow() + timeout
497
498
def need_approval(self):
499
self.last_approval_request = datetime.datetime.utcnow()
387
500
388
501
def start_checker(self):
389
502
"""Start a new checker subprocess if one is not running.
396
509
# client would inevitably timeout, since no checker would get
397
510
# a chance to run to completion. If we instead leave running
398
511
# checkers alone, the checker would have to take more time
399
# than 'timeout' for the client to be declared invalid, which
400
# is as it should be.
512
# than 'timeout' for the client to be disabled, which is as it
513
# should be.
401
514
402
515
# If a checker exists, make sure it is not a zombie
403
516
try:
404
517
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
405
except (AttributeError, OSError), error:
518
except (AttributeError, OSError) as error:
406
519
if (isinstance(error, OSError)
407
520
and error.errno != errno.ECHILD):
408
521
raise error
409
522
else:
410
523
if pid:
411
logger.warning(u"Checker was a zombie")
524
logger.warning("Checker was a zombie")
412
525
gobject.source_remove(self.checker_callback_tag)
413
526
self.checker_callback(pid, status,
414
527
self.current_checker_command)
419
532
command = self.checker_command % self.host
420
533
except TypeError:
421
534
# Escape attributes for the shell
422
escaped_attrs = dict((key,
423
re.escape(unicode(str(val),
424
errors=
425
u'replace')))
426
for key, val in
427
vars(self).iteritems())
535
escaped_attrs = dict(
536
(attr,
537
re.escape(unicode(str(getattr(self, attr, "")),
538
errors=
539
'replace')))
540
for attr in
541
self.runtime_expansions)
542
428
543
try:
429
544
command = self.checker_command % escaped_attrs
430
except TypeError, error:
431
logger.error(u'Could not format string "%s":'
432
u' %s', self.checker_command, error)
545
except TypeError as error:
546
logger.error('Could not format string "%s":'
547
' %s', self.checker_command, error)
433
548
return True # Try again later
434
549
self.current_checker_command = command
435
550
try:
436
logger.info(u"Starting checker %r for %s",
551
logger.info("Starting checker %r for %s",
437
552
command, self.name)
438
553
# We don't need to redirect stdout and stderr, since
439
554
# in normal mode, that is already done by daemon(),
441
556
# always replaced by /dev/null.)
442
557
self.checker = subprocess.Popen(command,
443
558
close_fds=True,
444
shell=True, cwd=u"/")
559
shell=True, cwd="/")
445
560
self.checker_callback_tag = (gobject.child_watch_add
446
561
(self.checker.pid,
447
562
self.checker_callback,
452
567
if pid:
453
568
gobject.source_remove(self.checker_callback_tag)
454
569
self.checker_callback(pid, status, command)
455
except OSError, error:
456
logger.error(u"Failed to start subprocess: %s",
570
except OSError as error:
571
logger.error("Failed to start subprocess: %s",
457
572
error)
458
573
# Re-run this periodically if run by gobject.timeout_add
459
574
return True
463
578
if self.checker_callback_tag:
464
579
gobject.source_remove(self.checker_callback_tag)
465
580
self.checker_callback_tag = None
466
if getattr(self, u"checker", None) is None:
581
if getattr(self, "checker", None) is None:
467
582
return
468
logger.debug(u"Stopping checker for %(name)s", vars(self))
583
logger.debug("Stopping checker for %(name)s", vars(self))
469
584
try:
470
585
os.kill(self.checker.pid, signal.SIGTERM)
471
586
#time.sleep(0.5)
472
587
#if self.checker.poll() is None:
473
588
# os.kill(self.checker.pid, signal.SIGKILL)
474
except OSError, error:
589
except OSError as error:
475
590
if error.errno != errno.ESRCH: # No such process
476
591
raise
477
592
self.checker = None
478
479
def still_valid(self):
480
"""Has the timeout not yet passed for this client?"""
481
if not getattr(self, u"enabled", False):
482
return False
483
now = datetime.datetime.utcnow()
484
if self.last_checked_ok is None:
485
return now < (self.created + self.timeout)
593
594
# Encrypts a client secret and stores it in a varible encrypted_secret
595
def encrypt_secret(self, key):
596
# Encryption-key need to be of a specific size, so we hash inputed key
597
hasheng = hashlib.sha256()
598
hasheng.update(key)
599
encryptionkey = hasheng.digest()
600
601
# Create validation hash so we know at decryption if it was sucessful
602
hasheng = hashlib.sha256()
603
hasheng.update(self.secret)
604
validationhash = hasheng.digest()
605
606
# Encrypt secret
607
iv = os.urandom(Crypto.Cipher.AES.block_size)
608
ciphereng = Crypto.Cipher.AES.new(encryptionkey,
609
Crypto.Cipher.AES.MODE_CFB, iv)
610
ciphertext = ciphereng.encrypt(validationhash+self.secret)
611
self.encrypted_secret = (ciphertext, iv)
612
613
# Decrypt a encrypted client secret
614
def decrypt_secret(self, key):
615
# Decryption-key need to be of a specific size, so we hash inputed key
616
hasheng = hashlib.sha256()
617
hasheng.update(key)
618
encryptionkey = hasheng.digest()
619
620
# Decrypt encrypted secret
621
ciphertext, iv = self.encrypted_secret
622
ciphereng = Crypto.Cipher.AES.new(encryptionkey,
623
Crypto.Cipher.AES.MODE_CFB, iv)
624
plain = ciphereng.decrypt(ciphertext)
625
626
# Validate decrypted secret to know if it was succesful
627
hasheng = hashlib.sha256()
628
validationhash = plain[:hasheng.digest_size]
629
secret = plain[hasheng.digest_size:]
630
hasheng.update(secret)
631
632
# if validation fails, we use key as new secret. Otherwhise, we use
633
# the decrypted secret
634
if hasheng.digest() == validationhash:
635
self.secret = secret
486
636
else:
487
return now < (self.last_checked_ok + self.timeout)
488
489
490
def dbus_service_property(dbus_interface, signature=u"v",
491
access=u"readwrite", byte_arrays=False):
637
self.secret = key
638
del self.encrypted_secret
639
640
641
def dbus_service_property(dbus_interface, signature="v",
642
access="readwrite", byte_arrays=False):
492
643
"""Decorators for marking methods of a DBusObjectWithProperties to
493
644
become properties on the D-Bus.
494
645
499
650
dbus.service.method, except there is only "signature", since the
500
651
type from Get() and the type sent to Set() is the same.
501
652
"""
653
# Encoding deeply encoded byte arrays is not supported yet by the
654
# "Set" method, so we fail early here:
655
if byte_arrays and signature != "ay":
656
raise ValueError("Byte arrays not supported for non-'ay'"
657
" signature %r" % signature)
502
658
def decorator(func):
503
659
func._dbus_is_property = True
504
660
func._dbus_interface = dbus_interface
505
661
func._dbus_signature = signature
506
662
func._dbus_access = access
507
663
func._dbus_name = func.__name__
508
if func._dbus_name.endswith(u"_dbus_property"):
664
if func._dbus_name.endswith("_dbus_property"):
509
665
func._dbus_name = func._dbus_name[:-14]
510
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
666
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
511
667
return func
512
668
return decorator
513
669
533
689
534
690
class DBusObjectWithProperties(dbus.service.Object):
535
691
"""A D-Bus object with properties.
536
692
537
693
Classes inheriting from this can use the dbus_service_property
538
694
decorator to expose methods as D-Bus properties. It exposes the
539
695
standard Get(), Set(), and GetAll() methods on the D-Bus.
541
697
542
698
@staticmethod
543
699
def _is_dbus_property(obj):
544
return getattr(obj, u"_dbus_is_property", False)
700
return getattr(obj, "_dbus_is_property", False)
545
701
546
702
def _get_all_dbus_properties(self):
547
703
"""Returns a generator of (name, attribute) pairs
548
704
"""
549
return ((prop._dbus_name, prop)
705
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
706
for cls in self.__class__.__mro__
550
707
for name, prop in
551
inspect.getmembers(self, self._is_dbus_property))
708
inspect.getmembers(cls, self._is_dbus_property))
552
709
553
710
def _get_dbus_property(self, interface_name, property_name):
554
711
"""Returns a bound method if one exists which is a D-Bus
555
712
property with the specified name and interface.
556
713
"""
557
for name in (property_name,
558
property_name + u"_dbus_property"):
559
prop = getattr(self, name, None)
560
if (prop is None
561
or not self._is_dbus_property(prop)
562
or prop._dbus_name != property_name
563
or (interface_name and prop._dbus_interface
564
and interface_name != prop._dbus_interface)):
565
continue
566
return prop
714
for cls in self.__class__.__mro__:
715
for name, value in (inspect.getmembers
716
(cls, self._is_dbus_property)):
717
if (value._dbus_name == property_name
718
and value._dbus_interface == interface_name):
719
return value.__get__(self)
720
567
721
# No such property
568
raise DBusPropertyNotFound(self.dbus_object_path + u":"
569
+ interface_name + u"."
722
raise DBusPropertyNotFound(self.dbus_object_path + ":"
723
+ interface_name + "."
570
724
+ property_name)
571
725
572
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
573
out_signature=u"v")
726
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
727
out_signature="v")
574
728
def Get(self, interface_name, property_name):
575
729
"""Standard D-Bus property Get() method, see D-Bus standard.
576
730
"""
577
731
prop = self._get_dbus_property(interface_name, property_name)
578
if prop._dbus_access == u"write":
732
if prop._dbus_access == "write":
579
733
raise DBusPropertyAccessException(property_name)
580
734
value = prop()
581
if not hasattr(value, u"variant_level"):
735
if not hasattr(value, "variant_level"):
582
736
return value
583
737
return type(value)(value, variant_level=value.variant_level+1)
584
738
585
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
739
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
586
740
def Set(self, interface_name, property_name, value):
587
741
"""Standard D-Bus property Set() method, see D-Bus standard.
588
742
"""
589
743
prop = self._get_dbus_property(interface_name, property_name)
590
if prop._dbus_access == u"read":
744
if prop._dbus_access == "read":
591
745
raise DBusPropertyAccessException(property_name)
592
if prop._dbus_get_args_options[u"byte_arrays"]:
746
if prop._dbus_get_args_options["byte_arrays"]:
747
# The byte_arrays option is not supported yet on
748
# signatures other than "ay".
749
if prop._dbus_signature != "ay":
750
raise ValueError
593
751
value = dbus.ByteArray(''.join(unichr(byte)
594
752
for byte in value))
595
753
prop(value)
596
754
597
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
598
out_signature=u"a{sv}")
755
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
756
out_signature="a{sv}")
599
757
def GetAll(self, interface_name):
600
758
"""Standard D-Bus property GetAll() method, see D-Bus
601
759
standard.
602
760
603
761
Note: Will not include properties with access="write".
604
762
"""
605
763
all = {}
609
767
# Interface non-empty but did not match
610
768
continue
611
769
# Ignore write-only properties
612
if prop._dbus_access == u"write":
770
if prop._dbus_access == "write":
613
771
continue
614
772
value = prop()
615
if not hasattr(value, u"variant_level"):
773
if not hasattr(value, "variant_level"):
616
774
all[name] = value
617
775
continue
618
776
all[name] = type(value)(value, variant_level=
619
777
value.variant_level+1)
620
return dbus.Dictionary(all, signature=u"sv")
778
return dbus.Dictionary(all, signature="sv")
621
779
622
780
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
623
out_signature=u"s",
781
out_signature="s",
624
782
path_keyword='object_path',
625
783
connection_keyword='connection')
626
784
def Introspect(self, object_path, connection):
631
789
try:
632
790
document = xml.dom.minidom.parseString(xmlstring)
633
791
def make_tag(document, name, prop):
634
e = document.createElement(u"property")
635
e.setAttribute(u"name", name)
636
e.setAttribute(u"type", prop._dbus_signature)
637
e.setAttribute(u"access", prop._dbus_access)
792
e = document.createElement("property")
793
e.setAttribute("name", name)
794
e.setAttribute("type", prop._dbus_signature)
795
e.setAttribute("access", prop._dbus_access)
638
796
return e
639
for if_tag in document.getElementsByTagName(u"interface"):
797
for if_tag in document.getElementsByTagName("interface"):
640
798
for tag in (make_tag(document, name, prop)
641
799
for name, prop
642
800
in self._get_all_dbus_properties()
643
801
if prop._dbus_interface
644
== if_tag.getAttribute(u"name")):
802
== if_tag.getAttribute("name")):
645
803
if_tag.appendChild(tag)
646
804
# Add the names to the return values for the
647
805
# "org.freedesktop.DBus.Properties" methods
648
if (if_tag.getAttribute(u"name")
649
== u"org.freedesktop.DBus.Properties"):
650
for cn in if_tag.getElementsByTagName(u"method"):
651
if cn.getAttribute(u"name") == u"Get":
652
for arg in cn.getElementsByTagName(u"arg"):
653
if (arg.getAttribute(u"direction")
654
== u"out"):
655
arg.setAttribute(u"name", u"value")
656
elif cn.getAttribute(u"name") == u"GetAll":
657
for arg in cn.getElementsByTagName(u"arg"):
658
if (arg.getAttribute(u"direction")
659
== u"out"):
660
arg.setAttribute(u"name", u"props")
661
xmlstring = document.toxml(u"utf-8")
806
if (if_tag.getAttribute("name")
807
== "org.freedesktop.DBus.Properties"):
808
for cn in if_tag.getElementsByTagName("method"):
809
if cn.getAttribute("name") == "Get":
810
for arg in cn.getElementsByTagName("arg"):
811
if (arg.getAttribute("direction")
812
== "out"):
813
arg.setAttribute("name", "value")
814
elif cn.getAttribute("name") == "GetAll":
815
for arg in cn.getElementsByTagName("arg"):
816
if (arg.getAttribute("direction")
817
== "out"):
818
arg.setAttribute("name", "props")
819
xmlstring = document.toxml("utf-8")
662
820
document.unlink()
663
821
except (AttributeError, xml.dom.DOMException,
664
xml.parsers.expat.ExpatError), error:
665
logger.error(u"Failed to override Introspection method",
822
xml.parsers.expat.ExpatError) as error:
823
logger.error("Failed to override Introspection method",
666
824
error)
667
825
return xmlstring
668
826
669
827
828
def datetime_to_dbus (dt, variant_level=0):
829
"""Convert a UTC datetime.datetime() to a D-Bus type."""
830
if dt is None:
831
return dbus.String("", variant_level = variant_level)
832
return dbus.String(dt.isoformat(),
833
variant_level=variant_level)
834
835
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
836
.__metaclass__):
837
"""Applied to an empty subclass of a D-Bus object, this metaclass
838
will add additional D-Bus attributes matching a certain pattern.
839
"""
840
def __new__(mcs, name, bases, attr):
841
# Go through all the base classes which could have D-Bus
842
# methods, signals, or properties in them
843
for base in (b for b in bases
844
if issubclass(b, dbus.service.Object)):
845
# Go though all attributes of the base class
846
for attrname, attribute in inspect.getmembers(base):
847
# Ignore non-D-Bus attributes, and D-Bus attributes
848
# with the wrong interface name
849
if (not hasattr(attribute, "_dbus_interface")
850
or not attribute._dbus_interface
851
.startswith("se.recompile.Mandos")):
852
continue
853
# Create an alternate D-Bus interface name based on
854
# the current name
855
alt_interface = (attribute._dbus_interface
856
.replace("se.recompile.Mandos",
857
"se.bsnet.fukt.Mandos"))
858
# Is this a D-Bus signal?
859
if getattr(attribute, "_dbus_is_signal", False):
860
# Extract the original non-method function by
861
# black magic
862
nonmethod_func = (dict(
863
zip(attribute.func_code.co_freevars,
864
attribute.__closure__))["func"]
865
.cell_contents)
866
# Create a new, but exactly alike, function
867
# object, and decorate it to be a new D-Bus signal
868
# with the alternate D-Bus interface name
869
new_function = (dbus.service.signal
870
(alt_interface,
871
attribute._dbus_signature)
872
(types.FunctionType(
873
nonmethod_func.func_code,
874
nonmethod_func.func_globals,
875
nonmethod_func.func_name,
876
nonmethod_func.func_defaults,
877
nonmethod_func.func_closure)))
878
# Define a creator of a function to call both the
879
# old and new functions, so both the old and new
880
# signals gets sent when the function is called
881
def fixscope(func1, func2):
882
"""This function is a scope container to pass
883
func1 and func2 to the "call_both" function
884
outside of its arguments"""
885
def call_both(*args, **kwargs):
886
"""This function will emit two D-Bus
887
signals by calling func1 and func2"""
888
func1(*args, **kwargs)
889
func2(*args, **kwargs)
890
return call_both
891
# Create the "call_both" function and add it to
892
# the class
893
attr[attrname] = fixscope(attribute,
894
new_function)
895
# Is this a D-Bus method?
896
elif getattr(attribute, "_dbus_is_method", False):
897
# Create a new, but exactly alike, function
898
# object. Decorate it to be a new D-Bus method
899
# with the alternate D-Bus interface name. Add it
900
# to the class.
901
attr[attrname] = (dbus.service.method
902
(alt_interface,
903
attribute._dbus_in_signature,
904
attribute._dbus_out_signature)
905
(types.FunctionType
906
(attribute.func_code,
907
attribute.func_globals,
908
attribute.func_name,
909
attribute.func_defaults,
910
attribute.func_closure)))
911
# Is this a D-Bus property?
912
elif getattr(attribute, "_dbus_is_property", False):
913
# Create a new, but exactly alike, function
914
# object, and decorate it to be a new D-Bus
915
# property with the alternate D-Bus interface
916
# name. Add it to the class.
917
attr[attrname] = (dbus_service_property
918
(alt_interface,
919
attribute._dbus_signature,
920
attribute._dbus_access,
921
attribute
922
._dbus_get_args_options
923
["byte_arrays"])
924
(types.FunctionType
925
(attribute.func_code,
926
attribute.func_globals,
927
attribute.func_name,
928
attribute.func_defaults,
929
attribute.func_closure)))
930
return type.__new__(mcs, name, bases, attr)
931
670
932
class ClientDBus(Client, DBusObjectWithProperties):
671
933
"""A Client class using D-Bus
672
934
674
936
dbus_object_path: dbus.ObjectPath
675
937
bus: dbus.SystemBus()
676
938
"""
939
940
runtime_expansions = (Client.runtime_expansions
941
+ ("dbus_object_path",))
942
677
943
# dbus.service.Object doesn't use super(), so we can't either.
678
944
679
945
def __init__(self, bus = None, *args, **kwargs):
680
946
self.bus = bus
681
947
Client.__init__(self, *args, **kwargs)
948
949
self._approvals_pending = 0
682
950
# Only now, when this client is initialized, can it show up on
683
951
# the D-Bus
952
client_object_name = unicode(self.name).translate(
953
{ord("."): ord("_"),
954
ord("-"): ord("_")})
684
955
self.dbus_object_path = (dbus.ObjectPath
685
(u"/clients/"
686
+ self.name.replace(u".", u"_")))
956
("/clients/" + client_object_name))
687
957
DBusObjectWithProperties.__init__(self, self.bus,
688
958
self.dbus_object_path)
689
690
@staticmethod
691
def _datetime_to_dbus(dt, variant_level=0):
692
"""Convert a UTC datetime.datetime() to a D-Bus type."""
693
return dbus.String(dt.isoformat(),
694
variant_level=variant_level)
695
696
def enable(self):
697
oldstate = getattr(self, u"enabled", False)
698
r = Client.enable(self)
699
if oldstate != self.enabled:
700
# Emit D-Bus signals
701
self.PropertyChanged(dbus.String(u"enabled"),
702
dbus.Boolean(True, variant_level=1))
703
self.PropertyChanged(
704
dbus.String(u"last_enabled"),
705
self._datetime_to_dbus(self.last_enabled,
706
variant_level=1))
707
return r
708
709
def disable(self, quiet = False):
710
oldstate = getattr(self, u"enabled", False)
711
r = Client.disable(self, quiet=quiet)
712
if not quiet and oldstate != self.enabled:
713
# Emit D-Bus signal
714
self.PropertyChanged(dbus.String(u"enabled"),
715
dbus.Boolean(False, variant_level=1))
716
return r
959
960
def notifychangeproperty(transform_func,
961
dbus_name, type_func=lambda x: x,
962
variant_level=1):
963
""" Modify a variable so that it's a property which announces
964
its changes to DBus.
965
966
transform_fun: Function that takes a value and a variant_level
967
and transforms it to a D-Bus type.
968
dbus_name: D-Bus name of the variable
969
type_func: Function that transform the value before sending it
970
to the D-Bus. Default: no transform
971
variant_level: D-Bus variant level. Default: 1
972
"""
973
attrname = "_{0}".format(dbus_name)
974
def setter(self, value):
975
if hasattr(self, "dbus_object_path"):
976
if (not hasattr(self, attrname) or
977
type_func(getattr(self, attrname, None))
978
!= type_func(value)):
979
dbus_value = transform_func(type_func(value),
980
variant_level
981
=variant_level)
982
self.PropertyChanged(dbus.String(dbus_name),
983
dbus_value)
984
setattr(self, attrname, value)
985
986
return property(lambda self: getattr(self, attrname), setter)
987
988
989
expires = notifychangeproperty(datetime_to_dbus, "Expires")
990
approvals_pending = notifychangeproperty(dbus.Boolean,
991
"ApprovalPending",
992
type_func = bool)
993
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
994
last_enabled = notifychangeproperty(datetime_to_dbus,
995
"LastEnabled")
996
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
997
type_func = lambda checker:
998
checker is not None)
999
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1000
"LastCheckedOK")
1001
last_approval_request = notifychangeproperty(
1002
datetime_to_dbus, "LastApprovalRequest")
1003
approved_by_default = notifychangeproperty(dbus.Boolean,
1004
"ApprovedByDefault")
1005
approval_delay = notifychangeproperty(dbus.UInt16,
1006
"ApprovalDelay",
1007
type_func =
1008
_timedelta_to_milliseconds)
1009
approval_duration = notifychangeproperty(
1010
dbus.UInt16, "ApprovalDuration",
1011
type_func = _timedelta_to_milliseconds)
1012
host = notifychangeproperty(dbus.String, "Host")
1013
timeout = notifychangeproperty(dbus.UInt16, "Timeout",
1014
type_func =
1015
_timedelta_to_milliseconds)
1016
extended_timeout = notifychangeproperty(
1017
dbus.UInt16, "ExtendedTimeout",
1018
type_func = _timedelta_to_milliseconds)
1019
interval = notifychangeproperty(dbus.UInt16,
1020
"Interval",
1021
type_func =
1022
_timedelta_to_milliseconds)
1023
checker_command = notifychangeproperty(dbus.String, "Checker")
1024
1025
del notifychangeproperty
717
1026
718
1027
def __del__(self, *args, **kwargs):
719
1028
try:
720
1029
self.remove_from_connection()
721
1030
except LookupError:
722
1031
pass
723
if hasattr(DBusObjectWithProperties, u"__del__"):
1032
if hasattr(DBusObjectWithProperties, "__del__"):
724
1033
DBusObjectWithProperties.__del__(self, *args, **kwargs)
725
1034
Client.__del__(self, *args, **kwargs)
726
1035
728
1037
*args, **kwargs):
729
1038
self.checker_callback_tag = None
730
1039
self.checker = None
731
# Emit D-Bus signal
732
self.PropertyChanged(dbus.String(u"checker_running"),
733
dbus.Boolean(False, variant_level=1))
734
1040
if os.WIFEXITED(condition):
735
1041
exitstatus = os.WEXITSTATUS(condition)
736
1042
# Emit D-Bus signal
746
1052
return Client.checker_callback(self, pid, condition, command,
747
1053
*args, **kwargs)
748
1054
749
def checked_ok(self, *args, **kwargs):
750
r = Client.checked_ok(self, *args, **kwargs)
751
# Emit D-Bus signal
752
self.PropertyChanged(
753
dbus.String(u"last_checked_ok"),
754
(self._datetime_to_dbus(self.last_checked_ok,
755
variant_level=1)))
756
return r
757
758
1055
def start_checker(self, *args, **kwargs):
759
1056
old_checker = self.checker
760
1057
if self.checker is not None:
767
1064
and old_checker_pid != self.checker.pid):
768
1065
# Emit D-Bus signal
769
1066
self.CheckerStarted(self.current_checker_command)
770
self.PropertyChanged(
771
dbus.String(u"checker_running"),
772
dbus.Boolean(True, variant_level=1))
773
return r
774
775
def stop_checker(self, *args, **kwargs):
776
old_checker = getattr(self, u"checker", None)
777
r = Client.stop_checker(self, *args, **kwargs)
778
if (old_checker is not None
779
and getattr(self, u"checker", None) is None):
780
self.PropertyChanged(dbus.String(u"checker_running"),
781
dbus.Boolean(False, variant_level=1))
782
return r
783
784
## D-Bus methods & signals
785
_interface = u"se.bsnet.fukt.Mandos.Client"
786
787
# CheckedOK - method
788
@dbus.service.method(_interface)
789
def CheckedOK(self):
790
return self.checked_ok()
1067
return r
1068
1069
def _reset_approved(self):
1070
self._approved = None
1071
return False
1072
1073
def approve(self, value=True):
1074
self.send_changedstate()
1075
self._approved = value
1076
gobject.timeout_add(_timedelta_to_milliseconds
1077
(self.approval_duration),
1078
self._reset_approved)
1079
1080
1081
## D-Bus methods, signals & properties
1082
_interface = "se.recompile.Mandos.Client"
1083
1084
## Signals
791
1085
792
1086
# CheckerCompleted - signal
793
@dbus.service.signal(_interface, signature=u"nxs")
1087
@dbus.service.signal(_interface, signature="nxs")
794
1088
def CheckerCompleted(self, exitcode, waitstatus, command):
795
1089
"D-Bus signal"
796
1090
pass
797
1091
798
1092
# CheckerStarted - signal
799
@dbus.service.signal(_interface, signature=u"s")
1093
@dbus.service.signal(_interface, signature="s")
800
1094
def CheckerStarted(self, command):
801
1095
"D-Bus signal"
802
1096
pass
803
1097
804
1098
# PropertyChanged - signal
805
@dbus.service.signal(_interface, signature=u"sv")
1099
@dbus.service.signal(_interface, signature="sv")
806
1100
def PropertyChanged(self, property, value):
807
1101
"D-Bus signal"
808
1102
pass
810
1104
# GotSecret - signal
811
1105
@dbus.service.signal(_interface)
812
1106
def GotSecret(self):
813
"D-Bus signal"
1107
"""D-Bus signal
1108
Is sent after a successful transfer of secret from the Mandos
1109
server to mandos-client
1110
"""
814
1111
pass
815
1112
816
1113
# Rejected - signal
817
@dbus.service.signal(_interface)
818
def Rejected(self):
819
"D-Bus signal"
820
pass
1114
@dbus.service.signal(_interface, signature="s")
1115
def Rejected(self, reason):
1116
"D-Bus signal"
1117
pass
1118
1119
# NeedApproval - signal
1120
@dbus.service.signal(_interface, signature="tb")
1121
def NeedApproval(self, timeout, default):
1122
"D-Bus signal"
1123
return self.need_approval()
1124
1125
# NeRwequest - signal
1126
@dbus.service.signal(_interface, signature="s")
1127
def NewRequest(self, ip):
1128
"""D-Bus signal
1129
Is sent after a client request a password.
1130
"""
1131
pass
1132
1133
## Methods
1134
1135
# Approve - method
1136
@dbus.service.method(_interface, in_signature="b")
1137
def Approve(self, value):
1138
self.approve(value)
1139
1140
# CheckedOK - method
1141
@dbus.service.method(_interface)
1142
def CheckedOK(self):
1143
self.checked_ok()
821
1144
822
1145
# Enable - method
823
1146
@dbus.service.method(_interface)
842
1165
def StopChecker(self):
843
1166
self.stop_checker()
844
1167
845
# name - property
846
@dbus_service_property(_interface, signature=u"s", access=u"read")
847
def name_dbus_property(self):
1168
## Properties
1169
1170
# ApprovalPending - property
1171
@dbus_service_property(_interface, signature="b", access="read")
1172
def ApprovalPending_dbus_property(self):
1173
return dbus.Boolean(bool(self.approvals_pending))
1174
1175
# ApprovedByDefault - property
1176
@dbus_service_property(_interface, signature="b",
1177
access="readwrite")
1178
def ApprovedByDefault_dbus_property(self, value=None):
1179
if value is None: # get
1180
return dbus.Boolean(self.approved_by_default)
1181
self.approved_by_default = bool(value)
1182
1183
# ApprovalDelay - property
1184
@dbus_service_property(_interface, signature="t",
1185
access="readwrite")
1186
def ApprovalDelay_dbus_property(self, value=None):
1187
if value is None: # get
1188
return dbus.UInt64(self.approval_delay_milliseconds())
1189
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1190
1191
# ApprovalDuration - property
1192
@dbus_service_property(_interface, signature="t",
1193
access="readwrite")
1194
def ApprovalDuration_dbus_property(self, value=None):
1195
if value is None: # get
1196
return dbus.UInt64(_timedelta_to_milliseconds(
1197
self.approval_duration))
1198
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1199
1200
# Name - property
1201
@dbus_service_property(_interface, signature="s", access="read")
1202
def Name_dbus_property(self):
848
1203
return dbus.String(self.name)
849
1204
850
# fingerprint - property
851
@dbus_service_property(_interface, signature=u"s", access=u"read")
852
def fingerprint_dbus_property(self):
1205
# Fingerprint - property
1206
@dbus_service_property(_interface, signature="s", access="read")
1207
def Fingerprint_dbus_property(self):
853
1208
return dbus.String(self.fingerprint)
854
1209
855
# host - property
856
@dbus_service_property(_interface, signature=u"s",
857
access=u"readwrite")
858
def host_dbus_property(self, value=None):
1210
# Host - property
1211
@dbus_service_property(_interface, signature="s",
1212
access="readwrite")
1213
def Host_dbus_property(self, value=None):
859
1214
if value is None: # get
860
1215
return dbus.String(self.host)
861
1216
self.host = value
862
# Emit D-Bus signal
863
self.PropertyChanged(dbus.String(u"host"),
864
dbus.String(value, variant_level=1))
865
866
# created - property
867
@dbus_service_property(_interface, signature=u"s", access=u"read")
868
def created_dbus_property(self):
869
return dbus.String(self._datetime_to_dbus(self.created))
870
871
# last_enabled - property
872
@dbus_service_property(_interface, signature=u"s", access=u"read")
873
def last_enabled_dbus_property(self):
874
if self.last_enabled is None:
875
return dbus.String(u"")
876
return dbus.String(self._datetime_to_dbus(self.last_enabled))
877
878
# enabled - property
879
@dbus_service_property(_interface, signature=u"b",
880
access=u"readwrite")
881
def enabled_dbus_property(self, value=None):
1217
1218
# Created - property
1219
@dbus_service_property(_interface, signature="s", access="read")
1220
def Created_dbus_property(self):
1221
return dbus.String(datetime_to_dbus(self.created))
1222
1223
# LastEnabled - property
1224
@dbus_service_property(_interface, signature="s", access="read")
1225
def LastEnabled_dbus_property(self):
1226
return datetime_to_dbus(self.last_enabled)
1227
1228
# Enabled - property
1229
@dbus_service_property(_interface, signature="b",
1230
access="readwrite")
1231
def Enabled_dbus_property(self, value=None):
882
1232
if value is None: # get
883
1233
return dbus.Boolean(self.enabled)
884
1234
if value:
886
1236
else:
887
1237
self.disable()
888
1238
889
# last_checked_ok - property
890
@dbus_service_property(_interface, signature=u"s",
891
access=u"readwrite")
892
def last_checked_ok_dbus_property(self, value=None):
1239
# LastCheckedOK - property
1240
@dbus_service_property(_interface, signature="s",
1241
access="readwrite")
1242
def LastCheckedOK_dbus_property(self, value=None):
893
1243
if value is not None:
894
1244
self.checked_ok()
895
1245
return
896
if self.last_checked_ok is None:
897
return dbus.String(u"")
898
return dbus.String(self._datetime_to_dbus(self
899
.last_checked_ok))
900
901
# timeout - property
902
@dbus_service_property(_interface, signature=u"t",
903
access=u"readwrite")
904
def timeout_dbus_property(self, value=None):
1246
return datetime_to_dbus(self.last_checked_ok)
1247
1248
# Expires - property
1249
@dbus_service_property(_interface, signature="s", access="read")
1250
def Expires_dbus_property(self):
1251
return datetime_to_dbus(self.expires)
1252
1253
# LastApprovalRequest - property
1254
@dbus_service_property(_interface, signature="s", access="read")
1255
def LastApprovalRequest_dbus_property(self):
1256
return datetime_to_dbus(self.last_approval_request)
1257
1258
# Timeout - property
1259
@dbus_service_property(_interface, signature="t",
1260
access="readwrite")
1261
def Timeout_dbus_property(self, value=None):
905
1262
if value is None: # get
906
1263
return dbus.UInt64(self.timeout_milliseconds())
907
1264
self.timeout = datetime.timedelta(0, 0, 0, value)
908
# Emit D-Bus signal
909
self.PropertyChanged(dbus.String(u"timeout"),
910
dbus.UInt64(value, variant_level=1))
911
if getattr(self, u"disable_initiator_tag", None) is None:
1265
if getattr(self, "disable_initiator_tag", None) is None:
912
1266
return
913
1267
# Reschedule timeout
914
1268
gobject.source_remove(self.disable_initiator_tag)
915
1269
self.disable_initiator_tag = None
916
time_to_die = (self.
917
_timedelta_to_milliseconds((self
918
.last_checked_ok
919
+ self.timeout)
920
- datetime.datetime
921
.utcnow()))
1270
self.expires = None
1271
time_to_die = _timedelta_to_milliseconds((self
1272
.last_checked_ok
1273
+ self.timeout)
1274
- datetime.datetime
1275
.utcnow())
922
1276
if time_to_die <= 0:
923
1277
# The timeout has passed
924
1278
self.disable()
925
1279
else:
1280
self.expires = (datetime.datetime.utcnow()
1281
+ datetime.timedelta(milliseconds =
1282
time_to_die))
926
1283
self.disable_initiator_tag = (gobject.timeout_add
927
1284
(time_to_die, self.disable))
928
1285
929
# interval - property
930
@dbus_service_property(_interface, signature=u"t",
931
access=u"readwrite")
932
def interval_dbus_property(self, value=None):
1286
# ExtendedTimeout - property
1287
@dbus_service_property(_interface, signature="t",
1288
access="readwrite")
1289
def ExtendedTimeout_dbus_property(self, value=None):
1290
if value is None: # get
1291
return dbus.UInt64(self.extended_timeout_milliseconds())
1292
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1293
1294
# Interval - property
1295
@dbus_service_property(_interface, signature="t",
1296
access="readwrite")
1297
def Interval_dbus_property(self, value=None):
933
1298
if value is None: # get
934
1299
return dbus.UInt64(self.interval_milliseconds())
935
1300
self.interval = datetime.timedelta(0, 0, 0, value)
936
# Emit D-Bus signal
937
self.PropertyChanged(dbus.String(u"interval"),
938
dbus.UInt64(value, variant_level=1))
939
if getattr(self, u"checker_initiator_tag", None) is None:
1301
if getattr(self, "checker_initiator_tag", None) is None:
940
1302
return
941
1303
# Reschedule checker run
942
1304
gobject.source_remove(self.checker_initiator_tag)
943
1305
self.checker_initiator_tag = (gobject.timeout_add
944
1306
(value, self.start_checker))
945
1307
self.start_checker() # Start one now, too
946
947
# checker - property
948
@dbus_service_property(_interface, signature=u"s",
949
access=u"readwrite")
950
def checker_dbus_property(self, value=None):
1308
1309
# Checker - property
1310
@dbus_service_property(_interface, signature="s",
1311
access="readwrite")
1312
def Checker_dbus_property(self, value=None):
951
1313
if value is None: # get
952
1314
return dbus.String(self.checker_command)
953
1315
self.checker_command = value
954
# Emit D-Bus signal
955
self.PropertyChanged(dbus.String(u"checker"),
956
dbus.String(self.checker_command,
957
variant_level=1))
958
1316
959
# checker_running - property
960
@dbus_service_property(_interface, signature=u"b",
961
access=u"readwrite")
962
def checker_running_dbus_property(self, value=None):
1317
# CheckerRunning - property
1318
@dbus_service_property(_interface, signature="b",
1319
access="readwrite")
1320
def CheckerRunning_dbus_property(self, value=None):
963
1321
if value is None: # get
964
1322
return dbus.Boolean(self.checker is not None)
965
1323
if value:
967
1325
else:
968
1326
self.stop_checker()
969
1327
970
# object_path - property
971
@dbus_service_property(_interface, signature=u"o", access=u"read")
972
def object_path_dbus_property(self):
1328
# ObjectPath - property
1329
@dbus_service_property(_interface, signature="o", access="read")
1330
def ObjectPath_dbus_property(self):
973
1331
return self.dbus_object_path # is already a dbus.ObjectPath
974
1332
975
# secret = property
976
@dbus_service_property(_interface, signature=u"ay",
977
access=u"write", byte_arrays=True)
978
def secret_dbus_property(self, value):
1333
# Secret = property
1334
@dbus_service_property(_interface, signature="ay",
1335
access="write", byte_arrays=True)
1336
def Secret_dbus_property(self, value):
979
1337
self.secret = str(value)
980
1338
981
1339
del _interface
982
1340
983
1341
1342
class ProxyClient(object):
1343
def __init__(self, child_pipe, fpr, address):
1344
self._pipe = child_pipe
1345
self._pipe.send(('init', fpr, address))
1346
if not self._pipe.recv():
1347
raise KeyError()
1348
1349
def __getattribute__(self, name):
1350
if(name == '_pipe'):
1351
return super(ProxyClient, self).__getattribute__(name)
1352
self._pipe.send(('getattr', name))
1353
data = self._pipe.recv()
1354
if data[0] == 'data':
1355
return data[1]
1356
if data[0] == 'function':
1357
def func(*args, **kwargs):
1358
self._pipe.send(('funcall', name, args, kwargs))
1359
return self._pipe.recv()[1]
1360
return func
1361
1362
def __setattr__(self, name, value):
1363
if(name == '_pipe'):
1364
return super(ProxyClient, self).__setattr__(name, value)
1365
self._pipe.send(('setattr', name, value))
1366
1367
class ClientDBusTransitional(ClientDBus):
1368
__metaclass__ = AlternateDBusNamesMetaclass
1369
984
1370
class ClientHandler(socketserver.BaseRequestHandler, object):
985
1371
"""A class to handle client connections.
986
1372
988
1374
Note: This will run in its own forked process."""
989
1375
990
1376
def handle(self):
991
logger.info(u"TCP connection from: %s",
992
unicode(self.client_address))
993
logger.debug(u"IPC Pipe FD: %d", self.server.pipe[1])
994
# Open IPC pipe to parent process
995
with closing(os.fdopen(self.server.pipe[1], u"w", 1)) as ipc:
1377
with contextlib.closing(self.server.child_pipe) as child_pipe:
1378
logger.info("TCP connection from: %s",
1379
unicode(self.client_address))
1380
logger.debug("Pipe FD: %d",
1381
self.server.child_pipe.fileno())
1382
996
1383
session = (gnutls.connection
997
1384
.ClientSession(self.request,
998
1385
gnutls.connection
999
1386
.X509Credentials()))
1000
1387
1001
line = self.request.makefile().readline()
1002
logger.debug(u"Protocol version: %r", line)
1003
try:
1004
if int(line.strip().split()[0]) > 1:
1005
raise RuntimeError
1006
except (ValueError, IndexError, RuntimeError), error:
1007
logger.error(u"Unknown protocol version: %s", error)
1008
return
1009
1010
1388
# Note: gnutls.connection.X509Credentials is really a
1011
1389
# generic GnuTLS certificate credentials object so long as
1012
1390
# no X.509 keys are added to it. Therefore, we can use it
1013
1391
# here despite using OpenPGP certificates.
1014
1392
1015
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1016
# u"+AES-256-CBC", u"+SHA1",
1017
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1018
# u"+DHE-DSS"))
1393
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1394
# "+AES-256-CBC", "+SHA1",
1395
# "+COMP-NULL", "+CTYPE-OPENPGP",
1396
# "+DHE-DSS"))
1019
1397
# Use a fallback default, since this MUST be set.
1020
1398
priority = self.server.gnutls_priority
1021
1399
if priority is None:
1022
priority = u"NORMAL"
1400
priority = "NORMAL"
1023
1401
(gnutls.library.functions
1024
1402
.gnutls_priority_set_direct(session._c_object,
1025
1403
priority, None))
1026
1404
1405
# Start communication using the Mandos protocol
1406
# Get protocol number
1407
line = self.request.makefile().readline()
1408
logger.debug("Protocol version: %r", line)
1409
try:
1410
if int(line.strip().split()[0]) > 1:
1411
raise RuntimeError
1412
except (ValueError, IndexError, RuntimeError) as error:
1413
logger.error("Unknown protocol version: %s", error)
1414
return
1415
1416
# Start GnuTLS connection
1027
1417
try:
1028
1418
session.handshake()
1029
except gnutls.errors.GNUTLSError, error:
1030
logger.warning(u"Handshake failed: %s", error)
1419
except gnutls.errors.GNUTLSError as error:
1420
logger.warning("Handshake failed: %s", error)
1031
1421
# Do not run session.bye() here: the session is not
1032
1422
# established. Just abandon the request.
1033
1423
return
1034
logger.debug(u"Handshake succeeded")
1424
logger.debug("Handshake succeeded")
1425
1426
approval_required = False
1035
1427
try:
1036
fpr = self.fingerprint(self.peer_certificate(session))
1037
except (TypeError, gnutls.errors.GNUTLSError), error:
1038
logger.warning(u"Bad certificate: %s", error)
1039
session.bye()
1040
return
1041
logger.debug(u"Fingerprint: %s", fpr)
1428
try:
1429
fpr = self.fingerprint(self.peer_certificate
1430
(session))
1431
except (TypeError,
1432
gnutls.errors.GNUTLSError) as error:
1433
logger.warning("Bad certificate: %s", error)
1434
return
1435
logger.debug("Fingerprint: %s", fpr)
1436
if self.server.use_dbus:
1437
# Emit D-Bus signal
1438
client.NewRequest(str(self.client_address))
1439
1440
try:
1441
client = ProxyClient(child_pipe, fpr,
1442
self.client_address)
1443
except KeyError:
1444
return
1445
1446
if client.approval_delay:
1447
delay = client.approval_delay
1448
client.approvals_pending += 1
1449
approval_required = True
1450
1451
while True:
1452
if not client.enabled:
1453
logger.info("Client %s is disabled",
1454
client.name)
1455
if self.server.use_dbus:
1456
# Emit D-Bus signal
1457
client.Rejected("Disabled")
1458
return
1459
1460
if client._approved or not client.approval_delay:
1461
#We are approved or approval is disabled
1462
break
1463
elif client._approved is None:
1464
logger.info("Client %s needs approval",
1465
client.name)
1466
if self.server.use_dbus:
1467
# Emit D-Bus signal
1468
client.NeedApproval(
1469
client.approval_delay_milliseconds(),
1470
client.approved_by_default)
1471
else:
1472
logger.warning("Client %s was not approved",
1473
client.name)
1474
if self.server.use_dbus:
1475
# Emit D-Bus signal
1476
client.Rejected("Denied")
1477
return
1478
1479
#wait until timeout or approved
1480
time = datetime.datetime.now()
1481
client.changedstate.acquire()
1482
(client.changedstate.wait
1483
(float(client._timedelta_to_milliseconds(delay)
1484
/ 1000)))
1485
client.changedstate.release()
1486
time2 = datetime.datetime.now()
1487
if (time2 - time) >= delay:
1488
if not client.approved_by_default:
1489
logger.warning("Client %s timed out while"
1490
" waiting for approval",
1491
client.name)
1492
if self.server.use_dbus:
1493
# Emit D-Bus signal
1494
client.Rejected("Approval timed out")
1495
return
1496
else:
1497
break
1498
else:
1499
delay -= time2 - time
1500
1501
sent_size = 0
1502
while sent_size < len(client.secret):
1503
try:
1504
sent = session.send(client.secret[sent_size:])
1505
except gnutls.errors.GNUTLSError as error:
1506
logger.warning("gnutls send failed")
1507
return
1508
logger.debug("Sent: %d, remaining: %d",
1509
sent, len(client.secret)
1510
- (sent_size + sent))
1511
sent_size += sent
1512
1513
logger.info("Sending secret to %s", client.name)
1514
# bump the timeout using extended_timeout
1515
client.checked_ok(client.extended_timeout)
1516
if self.server.use_dbus:
1517
# Emit D-Bus signal
1518
client.GotSecret()
1042
1519
1043
for c in self.server.clients:
1044
if c.fingerprint == fpr:
1045
client = c
1046
break
1047
else:
1048
ipc.write(u"NOTFOUND %s %s\n"
1049
% (fpr, unicode(self.client_address)))
1050
session.bye()
1051
return
1052
# Have to check if client.still_valid(), since it is
1053
# possible that the client timed out while establishing
1054
# the GnuTLS session.
1055
if not client.still_valid():
1056
ipc.write(u"INVALID %s\n" % client.name)
1057
session.bye()
1058
return
1059
ipc.write(u"SENDING %s\n" % client.name)
1060
sent_size = 0
1061
while sent_size < len(client.secret):
1062
sent = session.send(client.secret[sent_size:])
1063
logger.debug(u"Sent: %d, remaining: %d",
1064
sent, len(client.secret)
1065
- (sent_size + sent))
1066
sent_size += sent
1067
session.bye()
1520
finally:
1521
if approval_required:
1522
client.approvals_pending -= 1
1523
try:
1524
session.bye()
1525
except gnutls.errors.GNUTLSError as error:
1526
logger.warning("GnuTLS bye failed")
1068
1527
1069
1528
@staticmethod
1070
1529
def peer_certificate(session):
1080
1539
.gnutls_certificate_get_peers
1081
1540
(session._c_object, ctypes.byref(list_size)))
1082
1541
if not bool(cert_list) and list_size.value != 0:
1083
raise gnutls.errors.GNUTLSError(u"error getting peer"
1084
u" certificate")
1542
raise gnutls.errors.GNUTLSError("error getting peer"
1543
" certificate")
1085
1544
if list_size.value == 0:
1086
1545
return None
1087
1546
cert = cert_list[0]
1113
1572
if crtverify.value != 0:
1114
1573
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1115
1574
raise (gnutls.errors.CertificateSecurityError
1116
(u"Verify failed"))
1575
("Verify failed"))
1117
1576
# New buffer for the fingerprint
1118
1577
buf = ctypes.create_string_buffer(20)
1119
1578
buf_len = ctypes.c_size_t()
1126
1585
# Convert the buffer to a Python bytestring
1127
1586
fpr = ctypes.string_at(buf, buf_len.value)
1128
1587
# Convert the bytestring to hexadecimal notation
1129
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1588
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
1130
1589
return hex_fpr
1131
1590
1132
1591
1133
class ForkingMixInWithPipe(socketserver.ForkingMixIn, object):
1134
"""Like socketserver.ForkingMixIn, but also pass a pipe."""
1592
class MultiprocessingMixIn(object):
1593
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
1594
def sub_process_main(self, request, address):
1595
try:
1596
self.finish_request(request, address)
1597
except:
1598
self.handle_error(request, address)
1599
self.close_request(request)
1600
1601
def process_request(self, request, address):
1602
"""Start a new process to process the request."""
1603
proc = multiprocessing.Process(target = self.sub_process_main,
1604
args = (request,
1605
address))
1606
proc.start()
1607
return proc
1608
1609
1610
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1611
""" adds a pipe to the MixIn """
1135
1612
def process_request(self, request, client_address):
1136
1613
"""Overrides and wraps the original process_request().
1137
1614
1138
1615
This function creates a new pipe in self.pipe
1139
1616
"""
1140
self.pipe = os.pipe()
1141
super(ForkingMixInWithPipe,
1142
self).process_request(request, client_address)
1143
os.close(self.pipe[1]) # close write end
1144
self.add_pipe(self.pipe[0])
1145
def add_pipe(self, pipe):
1617
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1618
1619
proc = MultiprocessingMixIn.process_request(self, request,
1620
client_address)
1621
self.child_pipe.close()
1622
self.add_pipe(parent_pipe, proc)
1623
1624
def add_pipe(self, parent_pipe, proc):
1146
1625
"""Dummy function; override as necessary"""
1147
os.close(pipe)
1148
1149
1150
class IPv6_TCPServer(ForkingMixInWithPipe,
1626
raise NotImplementedError
1627
1628
1629
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1151
1630
socketserver.TCPServer, object):
1152
1631
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1153
1632
1169
1648
bind to an address or port if they were not specified."""
1170
1649
if self.interface is not None:
1171
1650
if SO_BINDTODEVICE is None:
1172
logger.error(u"SO_BINDTODEVICE does not exist;"
1173
u" cannot bind to interface %s",
1651
logger.error("SO_BINDTODEVICE does not exist;"
1652
" cannot bind to interface %s",
1174
1653
self.interface)
1175
1654
else:
1176
1655
try:
1177
1656
self.socket.setsockopt(socket.SOL_SOCKET,
1178
1657
SO_BINDTODEVICE,
1179
1658
str(self.interface
1180
+ u'\0'))
1181
except socket.error, error:
1659
+ '\0'))
1660
except socket.error as error:
1182
1661
if error[0] == errno.EPERM:
1183
logger.error(u"No permission to"
1184
u" bind to interface %s",
1662
logger.error("No permission to"
1663
" bind to interface %s",
1185
1664
self.interface)
1186
1665
elif error[0] == errno.ENOPROTOOPT:
1187
logger.error(u"SO_BINDTODEVICE not available;"
1188
u" cannot bind to interface %s",
1666
logger.error("SO_BINDTODEVICE not available;"
1667
" cannot bind to interface %s",
1189
1668
self.interface)
1190
1669
else:
1191
1670
raise
1193
1672
if self.server_address[0] or self.server_address[1]:
1194
1673
if not self.server_address[0]:
1195
1674
if self.address_family == socket.AF_INET6:
1196
any_address = u"::" # in6addr_any
1675
any_address = "::" # in6addr_any
1197
1676
else:
1198
1677
any_address = socket.INADDR_ANY
1199
1678
self.server_address = (any_address,
1226
1705
self.enabled = False
1227
1706
self.clients = clients
1228
1707
if self.clients is None:
1229
self.clients = set()
1708
self.clients = {}
1230
1709
self.use_dbus = use_dbus
1231
1710
self.gnutls_priority = gnutls_priority
1232
1711
IPv6_TCPServer.__init__(self, server_address,
1236
1715
def server_activate(self):
1237
1716
if self.enabled:
1238
1717
return socketserver.TCPServer.server_activate(self)
1718
1239
1719
def enable(self):
1240
1720
self.enabled = True
1241
def add_pipe(self, pipe):
1721
1722
def add_pipe(self, parent_pipe, proc):
1242
1723
# Call "handle_ipc" for both data and EOF events
1243
gobject.io_add_watch(pipe, gobject.IO_IN | gobject.IO_HUP,
1244
self.handle_ipc)
1245
def handle_ipc(self, source, condition, file_objects={}):
1724
gobject.io_add_watch(parent_pipe.fileno(),
1725
gobject.IO_IN | gobject.IO_HUP,
1726
functools.partial(self.handle_ipc,
1727
parent_pipe =
1728
parent_pipe,
1729
proc = proc))
1730
1731
def handle_ipc(self, source, condition, parent_pipe=None,
1732
proc = None, client_object=None):
1246
1733
condition_names = {
1247
gobject.IO_IN: u"IN", # There is data to read.
1248
gobject.IO_OUT: u"OUT", # Data can be written (without
1734
gobject.IO_IN: "IN", # There is data to read.
1735
gobject.IO_OUT: "OUT", # Data can be written (without
1249
1736
# blocking).
1250
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1251
gobject.IO_ERR: u"ERR", # Error condition.
1252
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1737
gobject.IO_PRI: "PRI", # There is urgent data to read.
1738
gobject.IO_ERR: "ERR", # Error condition.
1739
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1253
1740
# broken, usually for pipes and
1254
1741
# sockets).
1255
1742
}
1257
1744
for cond, name in
1258
1745
condition_names.iteritems()
1259
1746
if cond & condition)
1260
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1261
conditions_string)
1262
1263
# Turn the pipe file descriptor into a Python file object
1264
if source not in file_objects:
1265
file_objects[source] = os.fdopen(source, u"r", 1)
1266
1267
# Read a line from the file object
1268
cmdline = file_objects[source].readline()
1269
if not cmdline: # Empty line means end of file
1270
# close the IPC pipe
1271
file_objects[source].close()
1272
del file_objects[source]
1273
1274
# Stop calling this function
1275
return False
1276
1277
logger.debug(u"IPC command: %r", cmdline)
1278
1279
# Parse and act on command
1280
cmd, args = cmdline.rstrip(u"\r\n").split(None, 1)
1281
1282
if cmd == u"NOTFOUND":
1283
fpr, address = args.split(None, 1)
1284
logger.warning(u"Client not found for fingerprint: %s, ad"
1285
u"dress: %s", fpr, address)
1286
if self.use_dbus:
1287
# Emit D-Bus signal
1288
mandos_dbus_service.ClientNotFound(fpr, address)
1289
elif cmd == u"INVALID":
1290
for client in self.clients:
1291
if client.name == args:
1292
logger.warning(u"Client %s is invalid", args)
1293
if self.use_dbus:
1294
# Emit D-Bus signal
1295
client.Rejected()
1296
break
1297
else:
1298
logger.error(u"Unknown client %s is invalid", args)
1299
elif cmd == u"SENDING":
1300
for client in self.clients:
1301
if client.name == args:
1302
logger.info(u"Sending secret to %s", client.name)
1303
client.checked_ok()
1304
if self.use_dbus:
1305
# Emit D-Bus signal
1306
client.GotSecret()
1307
break
1308
else:
1309
logger.error(u"Sending secret to unknown client %s",
1310
args)
1311
else:
1312
logger.error(u"Unknown IPC command: %r", cmdline)
1313
1314
# Keep calling this function
1747
# error, or the other end of multiprocessing.Pipe has closed
1748
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
1749
# Wait for other process to exit
1750
proc.join()
1751
return False
1752
1753
# Read a request from the child
1754
request = parent_pipe.recv()
1755
command = request[0]
1756
1757
if command == 'init':
1758
fpr = request[1]
1759
address = request[2]
1760
1761
for c in self.clients.itervalues():
1762
if c.fingerprint == fpr:
1763
client = c
1764
break
1765
else:
1766
logger.info("Client not found for fingerprint: %s, ad"
1767
"dress: %s", fpr, address)
1768
if self.use_dbus:
1769
# Emit D-Bus signal
1770
mandos_dbus_service.ClientNotFound(fpr,
1771
address[0])
1772
parent_pipe.send(False)
1773
return False
1774
1775
gobject.io_add_watch(parent_pipe.fileno(),
1776
gobject.IO_IN | gobject.IO_HUP,
1777
functools.partial(self.handle_ipc,
1778
parent_pipe =
1779
parent_pipe,
1780
proc = proc,
1781
client_object =
1782
client))
1783
parent_pipe.send(True)
1784
# remove the old hook in favor of the new above hook on
1785
# same fileno
1786
return False
1787
if command == 'funcall':
1788
funcname = request[1]
1789
args = request[2]
1790
kwargs = request[3]
1791
1792
parent_pipe.send(('data', getattr(client_object,
1793
funcname)(*args,
1794
**kwargs)))
1795
1796
if command == 'getattr':
1797
attrname = request[1]
1798
if callable(client_object.__getattribute__(attrname)):
1799
parent_pipe.send(('function',))
1800
else:
1801
parent_pipe.send(('data', client_object
1802
.__getattribute__(attrname)))
1803
1804
if command == 'setattr':
1805
attrname = request[1]
1806
value = request[2]
1807
setattr(client_object, attrname, value)
1808
1315
1809
return True
1316
1810
1317
1811
1318
1812
def string_to_delta(interval):
1319
1813
"""Parse a string and return a datetime.timedelta
1320
1814
1321
>>> string_to_delta(u'7d')
1815
>>> string_to_delta('7d')
1322
1816
datetime.timedelta(7)
1323
>>> string_to_delta(u'60s')
1817
>>> string_to_delta('60s')
1324
1818
datetime.timedelta(0, 60)
1325
>>> string_to_delta(u'60m')
1819
>>> string_to_delta('60m')
1326
1820
datetime.timedelta(0, 3600)
1327
>>> string_to_delta(u'24h')
1821
>>> string_to_delta('24h')
1328
1822
datetime.timedelta(1)
1329
>>> string_to_delta(u'1w')
1823
>>> string_to_delta('1w')
1330
1824
datetime.timedelta(7)
1331
>>> string_to_delta(u'5m 30s')
1825
>>> string_to_delta('5m 30s')
1332
1826
datetime.timedelta(0, 330)
1333
1827
"""
1334
1828
timevalue = datetime.timedelta(0)
1336
1830
try:
1337
1831
suffix = unicode(s[-1])
1338
1832
value = int(s[:-1])
1339
if suffix == u"d":
1833
if suffix == "d":
1340
1834
delta = datetime.timedelta(value)
1341
elif suffix == u"s":
1835
elif suffix == "s":
1342
1836
delta = datetime.timedelta(0, value)
1343
elif suffix == u"m":
1837
elif suffix == "m":
1344
1838
delta = datetime.timedelta(0, 0, 0, 0, value)
1345
elif suffix == u"h":
1839
elif suffix == "h":
1346
1840
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1347
elif suffix == u"w":
1841
elif suffix == "w":
1348
1842
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1349
1843
else:
1350
raise ValueError(u"Unknown suffix %r" % suffix)
1351
except (ValueError, IndexError), e:
1352
raise ValueError(e.message)
1844
raise ValueError("Unknown suffix %r" % suffix)
1845
except (ValueError, IndexError) as e:
1846
raise ValueError(*(e.args))
1353
1847
timevalue += delta
1354
1848
return timevalue
1355
1849
1361
1855
global if_nametoindex
1362
1856
try:
1363
1857
if_nametoindex = (ctypes.cdll.LoadLibrary
1364
(ctypes.util.find_library(u"c"))
1858
(ctypes.util.find_library("c"))
1365
1859
.if_nametoindex)
1366
1860
except (OSError, AttributeError):
1367
logger.warning(u"Doing if_nametoindex the hard way")
1861
logger.warning("Doing if_nametoindex the hard way")
1368
1862
def if_nametoindex(interface):
1369
1863
"Get an interface index the hard way, i.e. using fcntl()"
1370
1864
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1371
with closing(socket.socket()) as s:
1865
with contextlib.closing(socket.socket()) as s:
1372
1866
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1373
struct.pack(str(u"16s16x"),
1867
struct.pack(str("16s16x"),
1374
1868
interface))
1375
interface_index = struct.unpack(str(u"I"),
1869
interface_index = struct.unpack(str("I"),
1376
1870
ifreq[16:20])[0]
1377
1871
return interface_index
1378
1872
return if_nametoindex(interface)
1386
1880
sys.exit()
1387
1881
os.setsid()
1388
1882
if not nochdir:
1389
os.chdir(u"/")
1883
os.chdir("/")
1390
1884
if os.fork():
1391
1885
sys.exit()
1392
1886
if not noclose:
1394
1888
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1395
1889
if not stat.S_ISCHR(os.fstat(null).st_mode):
1396
1890
raise OSError(errno.ENODEV,
1397
u"%s not a character device"
1891
"%s not a character device"
1398
1892
% os.path.devnull)
1399
1893
os.dup2(null, sys.stdin.fileno())
1400
1894
os.dup2(null, sys.stdout.fileno())
1408
1902
##################################################################
1409
1903
# Parsing of options, both command line and config file
1410
1904
1411
parser = optparse.OptionParser(version = "%%prog %s" % version)
1412
parser.add_option("-i", u"--interface", type=u"string",
1413
metavar="IF", help=u"Bind to interface IF")
1414
parser.add_option("-a", u"--address", type=u"string",
1415
help=u"Address to listen for requests on")
1416
parser.add_option("-p", u"--port", type=u"int",
1417
help=u"Port number to receive requests on")
1418
parser.add_option("--check", action=u"store_true",
1419
help=u"Run self-test")
1420
parser.add_option("--debug", action=u"store_true",
1421
help=u"Debug mode; run in foreground and log to"
1422
u" terminal")
1423
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1424
u" priority string (see GnuTLS documentation)")
1425
parser.add_option("--servicename", type=u"string",
1426
metavar=u"NAME", help=u"Zeroconf service name")
1427
parser.add_option("--configdir", type=u"string",
1428
default=u"/etc/mandos", metavar=u"DIR",
1429
help=u"Directory to search for configuration"
1430
u" files")
1431
parser.add_option("--no-dbus", action=u"store_false",
1432
dest=u"use_dbus", help=u"Do not provide D-Bus"
1433
u" system bus interface")
1434
parser.add_option("--no-ipv6", action=u"store_false",
1435
dest=u"use_ipv6", help=u"Do not use IPv6")
1436
options = parser.parse_args()[0]
1905
parser = argparse.ArgumentParser()
1906
parser.add_argument("-v", "--version", action="version",
1907
version = "%%(prog)s %s" % version,
1908
help="show version number and exit")
1909
parser.add_argument("-i", "--interface", metavar="IF",
1910
help="Bind to interface IF")
1911
parser.add_argument("-a", "--address",
1912
help="Address to listen for requests on")
1913
parser.add_argument("-p", "--port", type=int,
1914
help="Port number to receive requests on")
1915
parser.add_argument("--check", action="store_true",
1916
help="Run self-test")
1917
parser.add_argument("--debug", action="store_true",
1918
help="Debug mode; run in foreground and log"
1919
" to terminal")
1920
parser.add_argument("--debuglevel", metavar="LEVEL",
1921
help="Debug level for stdout output")
1922
parser.add_argument("--priority", help="GnuTLS"
1923
" priority string (see GnuTLS documentation)")
1924
parser.add_argument("--servicename",
1925
metavar="NAME", help="Zeroconf service name")
1926
parser.add_argument("--configdir",
1927
default="/etc/mandos", metavar="DIR",
1928
help="Directory to search for configuration"
1929
" files")
1930
parser.add_argument("--no-dbus", action="store_false",
1931
dest="use_dbus", help="Do not provide D-Bus"
1932
" system bus interface")
1933
parser.add_argument("--no-ipv6", action="store_false",
1934
dest="use_ipv6", help="Do not use IPv6")
1935
parser.add_argument("--no-restore", action="store_false",
1936
dest="restore", help="Do not restore stored state",
1937
default=True)
1938
1939
options = parser.parse_args()
1437
1940
1438
1941
if options.check:
1439
1942
import doctest
1441
1944
sys.exit()
1442
1945
1443
1946
# Default values for config file for server-global settings
1444
server_defaults = { u"interface": u"",
1445
u"address": u"",
1446
u"port": u"",
1447
u"debug": u"False",
1448
u"priority":
1449
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1450
u"servicename": u"Mandos",
1451
u"use_dbus": u"True",
1452
u"use_ipv6": u"True",
1947
server_defaults = { "interface": "",
1948
"address": "",
1949
"port": "",
1950
"debug": "False",
1951
"priority":
1952
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1953
"servicename": "Mandos",
1954
"use_dbus": "True",
1955
"use_ipv6": "True",
1956
"debuglevel": "",
1453
1957
}
1454
1958
1455
1959
# Parse config file for server-global settings
1456
1960
server_config = configparser.SafeConfigParser(server_defaults)
1457
1961
del server_defaults
1458
1962
server_config.read(os.path.join(options.configdir,
1459
u"mandos.conf"))
1963
"mandos.conf"))
1460
1964
# Convert the SafeConfigParser object to a dict
1461
1965
server_settings = server_config.defaults()
1462
1966
# Use the appropriate methods on the non-string config options
1463
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1464
server_settings[option] = server_config.getboolean(u"DEFAULT",
1967
for option in ("debug", "use_dbus", "use_ipv6"):
1968
server_settings[option] = server_config.getboolean("DEFAULT",
1465
1969
option)
1466
1970
if server_settings["port"]:
1467
server_settings["port"] = server_config.getint(u"DEFAULT",
1468
u"port")
1971
server_settings["port"] = server_config.getint("DEFAULT",
1972
"port")
1469
1973
del server_config
1470
1974
1471
1975
# Override the settings from the config file with command line
1472
1976
# options, if set.
1473
for option in (u"interface", u"address", u"port", u"debug",
1474
u"priority", u"servicename", u"configdir",
1475
u"use_dbus", u"use_ipv6"):
1977
for option in ("interface", "address", "port", "debug",
1978
"priority", "servicename", "configdir",
1979
"use_dbus", "use_ipv6", "debuglevel", "restore"):
1476
1980
value = getattr(options, option)
1477
1981
if value is not None:
1478
1982
server_settings[option] = value
1486
1990
##################################################################
1487
1991
1488
1992
# For convenience
1489
debug = server_settings[u"debug"]
1490
use_dbus = server_settings[u"use_dbus"]
1491
use_ipv6 = server_settings[u"use_ipv6"]
1492
1493
if not debug:
1494
syslogger.setLevel(logging.WARNING)
1495
console.setLevel(logging.WARNING)
1496
1497
if server_settings[u"servicename"] != u"Mandos":
1993
debug = server_settings["debug"]
1994
debuglevel = server_settings["debuglevel"]
1995
use_dbus = server_settings["use_dbus"]
1996
use_ipv6 = server_settings["use_ipv6"]
1997
1998
if server_settings["servicename"] != "Mandos":
1498
1999
syslogger.setFormatter(logging.Formatter
1499
(u'Mandos (%s) [%%(process)d]:'
1500
u' %%(levelname)s: %%(message)s'
1501
% server_settings[u"servicename"]))
2000
('Mandos (%s) [%%(process)d]:'
2001
' %%(levelname)s: %%(message)s'
2002
% server_settings["servicename"]))
1502
2003
1503
2004
# Parse config file with clients
1504
client_defaults = { u"timeout": u"1h",
1505
u"interval": u"5m",
1506
u"checker": u"fping -q -- %%(host)s",
1507
u"host": u"",
2005
client_defaults = { "timeout": "5m",
2006
"extended_timeout": "15m",
2007
"interval": "2m",
2008
"checker": "fping -q -- %%(host)s",
2009
"host": "",
2010
"approval_delay": "0s",
2011
"approval_duration": "1s",
1508
2012
}
1509
2013
client_config = configparser.SafeConfigParser(client_defaults)
1510
client_config.read(os.path.join(server_settings[u"configdir"],
1511
u"clients.conf"))
2014
client_config.read(os.path.join(server_settings["configdir"],
2015
"clients.conf"))
1512
2016
1513
2017
global mandos_dbus_service
1514
2018
mandos_dbus_service = None
1515
2019
1516
tcp_server = MandosServer((server_settings[u"address"],
1517
server_settings[u"port"]),
2020
tcp_server = MandosServer((server_settings["address"],
2021
server_settings["port"]),
1518
2022
ClientHandler,
1519
interface=server_settings[u"interface"],
2023
interface=(server_settings["interface"]
2024
or None),
1520
2025
use_ipv6=use_ipv6,
1521
2026
gnutls_priority=
1522
server_settings[u"priority"],
2027
server_settings["priority"],
1523
2028
use_dbus=use_dbus)
1524
pidfilename = u"/var/run/mandos.pid"
1525
try:
1526
pidfile = open(pidfilename, u"w")
1527
except IOError:
1528
logger.error(u"Could not open file %r", pidfilename)
2029
if not debug:
2030
pidfilename = "/var/run/mandos.pid"
2031
try:
2032
pidfile = open(pidfilename, "w")
2033
except IOError:
2034
logger.error("Could not open file %r", pidfilename)
1529
2035
1530
2036
try:
1531
uid = pwd.getpwnam(u"_mandos").pw_uid
1532
gid = pwd.getpwnam(u"_mandos").pw_gid
2037
uid = pwd.getpwnam("_mandos").pw_uid
2038
gid = pwd.getpwnam("_mandos").pw_gid
1533
2039
except KeyError:
1534
2040
try:
1535
uid = pwd.getpwnam(u"mandos").pw_uid
1536
gid = pwd.getpwnam(u"mandos").pw_gid
2041
uid = pwd.getpwnam("mandos").pw_uid
2042
gid = pwd.getpwnam("mandos").pw_gid
1537
2043
except KeyError:
1538
2044
try:
1539
uid = pwd.getpwnam(u"nobody").pw_uid
1540
gid = pwd.getpwnam(u"nobody").pw_gid
2045
uid = pwd.getpwnam("nobody").pw_uid
2046
gid = pwd.getpwnam("nobody").pw_gid
1541
2047
except KeyError:
1542
2048
uid = 65534
1543
2049
gid = 65534
1544
2050
try:
1545
2051
os.setgid(gid)
1546
2052
os.setuid(uid)
1547
except OSError, error:
2053
except OSError as error:
1548
2054
if error[0] != errno.EPERM:
1549
2055
raise error
1550
2056
1551
# Enable all possible GnuTLS debugging
2057
if not debug and not debuglevel:
2058
logger.setLevel(logging.WARNING)
2059
if debuglevel:
2060
level = getattr(logging, debuglevel.upper())
2061
logger.setLevel(level)
2062
1552
2063
if debug:
2064
logger.setLevel(logging.DEBUG)
2065
# Enable all possible GnuTLS debugging
2066
1553
2067
# "Use a log level over 10 to enable all debugging options."
1554
2068
# - GnuTLS manual
1555
2069
gnutls.library.functions.gnutls_global_set_log_level(11)
1556
2070
1557
2071
@gnutls.library.types.gnutls_log_func
1558
2072
def debug_gnutls(level, string):
1559
logger.debug(u"GnuTLS: %s", string[:-1])
2073
logger.debug("GnuTLS: %s", string[:-1])
1560
2074
1561
2075
(gnutls.library.functions
1562
2076
.gnutls_global_set_log_function(debug_gnutls))
2077
2078
# Redirect stdin so all checkers get /dev/null
2079
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2080
os.dup2(null, sys.stdin.fileno())
2081
if null > 2:
2082
os.close(null)
2083
else:
2084
# No console logging
2085
logger.removeHandler(console)
2086
2087
# Need to fork before connecting to D-Bus
2088
if not debug:
2089
# Close all input and output, do double fork, etc.
2090
daemon()
1563
2091
1564
2092
global main_loop
1565
2093
# From the Avahi example code
1569
2097
# End of Avahi example code
1570
2098
if use_dbus:
1571
2099
try:
1572
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
2100
bus_name = dbus.service.BusName("se.recompile.Mandos",
1573
2101
bus, do_not_queue=True)
1574
except dbus.exceptions.NameExistsException, e:
1575
logger.error(unicode(e) + u", disabling D-Bus")
2102
old_bus_name = (dbus.service.BusName
2103
("se.bsnet.fukt.Mandos", bus,
2104
do_not_queue=True))
2105
except dbus.exceptions.NameExistsException as e:
2106
logger.error(unicode(e) + ", disabling D-Bus")
1576
2107
use_dbus = False
1577
server_settings[u"use_dbus"] = False
2108
server_settings["use_dbus"] = False
1578
2109
tcp_server.use_dbus = False
1579
2110
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1580
service = AvahiService(name = server_settings[u"servicename"],
1581
servicetype = u"_mandos._tcp",
1582
protocol = protocol, bus = bus)
2111
service = AvahiServiceToSyslog(name =
2112
server_settings["servicename"],
2113
servicetype = "_mandos._tcp",
2114
protocol = protocol, bus = bus)
1583
2115
if server_settings["interface"]:
1584
2116
service.interface = (if_nametoindex
1585
(str(server_settings[u"interface"])))
2117
(str(server_settings["interface"])))
2118
2119
global multiprocessing_manager
2120
multiprocessing_manager = multiprocessing.Manager()
1586
2121
1587
2122
client_class = Client
1588
2123
if use_dbus:
1589
client_class = functools.partial(ClientDBus, bus = bus)
1590
tcp_server.clients.update(set(
1591
client_class(name = section,
1592
config= dict(client_config.items(section)))
1593
for section in client_config.sections()))
2124
client_class = functools.partial(ClientDBusTransitional,
2125
bus = bus)
2126
2127
special_settings = {
2128
# Some settings need to be accessd by special methods;
2129
# booleans need .getboolean(), etc. Here is a list of them:
2130
"approved_by_default":
2131
lambda section:
2132
client_config.getboolean(section, "approved_by_default"),
2133
}
2134
# Construct a new dict of client settings of this form:
2135
# { client_name: {setting_name: value, ...}, ...}
2136
# with exceptions for any special settings as defined above
2137
client_settings = dict((clientname,
2138
dict((setting,
2139
(value if setting not in special_settings
2140
else special_settings[setting](clientname)))
2141
for setting, value in client_config.items(clientname)))
2142
for clientname in client_config.sections())
2143
2144
old_client_settings = {}
2145
clients_data = []
2146
2147
# Get client data and settings from last running state.
2148
if server_settings["restore"]:
2149
try:
2150
with open(stored_state_path, "rb") as stored_state:
2151
clients_data, old_client_settings = pickle.load(stored_state)
2152
os.remove(stored_state_path)
2153
except IOError as e:
2154
logger.warning("Could not load persistant state: {0}".format(e))
2155
if e.errno != errno.ENOENT:
2156
raise
2157
2158
for client in clients_data:
2159
client_name = client["name"]
2160
2161
# Decide which value to use after restoring saved state.
2162
# We have three different values: Old config file,
2163
# new config file, and saved state.
2164
# New config value takes precedence if it differs from old
2165
# config value, otherwise use saved state.
2166
for name, value in client_settings[client_name].items():
2167
try:
2168
# For each value in new config, check if it differs
2169
# from the old config value (Except for the "secret"
2170
# attribute)
2171
if name != "secret" and value != old_client_settings[client_name][name]:
2172
setattr(client, name, value)
2173
except KeyError:
2174
pass
2175
2176
# Clients who has passed its expire date, can still be enabled if its
2177
# last checker was sucessful. Clients who checkers failed before we
2178
# stored it state is asumed to had failed checker during downtime.
2179
if client["enabled"] and client["last_checked_ok"]:
2180
if ((datetime.datetime.utcnow() - client["last_checked_ok"])
2181
> client["interval"]):
2182
if client["last_checker_status"] != 0:
2183
client["enabled"] = False
2184
else:
2185
client["expires"] = datetime.datetime.utcnow() + client["timeout"]
2186
2187
client["changedstate"] = (multiprocessing_manager
2188
.Condition(multiprocessing_manager
2189
.Lock()))
2190
if use_dbus:
2191
new_client = ClientDBusTransitional.__new__(ClientDBusTransitional)
2192
tcp_server.clients[client_name] = new_client
2193
new_client.bus = bus
2194
for name, value in client.iteritems():
2195
setattr(new_client, name, value)
2196
client_object_name = unicode(client_name).translate(
2197
{ord("."): ord("_"),
2198
ord("-"): ord("_")})
2199
new_client.dbus_object_path = (dbus.ObjectPath
2200
("/clients/" + client_object_name))
2201
DBusObjectWithProperties.__init__(new_client,
2202
new_client.bus,
2203
new_client.dbus_object_path)
2204
else:
2205
tcp_server.clients[client_name] = Client.__new__(Client)
2206
for name, value in client.iteritems():
2207
setattr(tcp_server.clients[client_name], name, value)
2208
2209
tcp_server.clients[client_name].decrypt_secret(
2210
client_settings[client_name]["secret"])
2211
2212
# Create/remove clients based on new changes made to config
2213
for clientname in set(old_client_settings) - set(client_settings):
2214
del tcp_server.clients[clientname]
2215
for clientname in set(client_settings) - set(old_client_settings):
2216
tcp_server.clients[clientname] = (client_class(name = clientname,
2217
config =
2218
client_settings
2219
[clientname]))
2220
2221
1594
2222
if not tcp_server.clients:
1595
logger.warning(u"No clients defined")
1596
1597
if debug:
1598
# Redirect stdin so all checkers get /dev/null
1599
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1600
os.dup2(null, sys.stdin.fileno())
1601
if null > 2:
1602
os.close(null)
1603
else:
1604
# No console logging
1605
logger.removeHandler(console)
1606
# Close all input and output, do double fork, etc.
1607
daemon()
1608
1609
try:
1610
with closing(pidfile):
1611
pid = os.getpid()
1612
pidfile.write(str(pid) + "\n")
1613
del pidfile
1614
except IOError:
1615
logger.error(u"Could not write to file %r with PID %d",
1616
pidfilename, pid)
1617
except NameError:
1618
# "pidfile" was never created
1619
pass
1620
del pidfilename
1621
2223
logger.warning("No clients defined")
2224
1622
2225
if not debug:
2226
try:
2227
with pidfile:
2228
pid = os.getpid()
2229
pidfile.write(str(pid) + "\n".encode("utf-8"))
2230
del pidfile
2231
except IOError:
2232
logger.error("Could not write to file %r with PID %d",
2233
pidfilename, pid)
2234
except NameError:
2235
# "pidfile" was never created
2236
pass
2237
del pidfilename
2238
1623
2239
signal.signal(signal.SIGINT, signal.SIG_IGN)
2240
1624
2241
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1625
2242
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1626
2243
1628
2245
class MandosDBusService(dbus.service.Object):
1629
2246
"""A D-Bus proxy object"""
1630
2247
def __init__(self):
1631
dbus.service.Object.__init__(self, bus, u"/")
1632
_interface = u"se.bsnet.fukt.Mandos"
2248
dbus.service.Object.__init__(self, bus, "/")
2249
_interface = "se.recompile.Mandos"
1633
2250
1634
@dbus.service.signal(_interface, signature=u"oa{sv}")
1635
def ClientAdded(self, objpath, properties):
2251
@dbus.service.signal(_interface, signature="o")
2252
def ClientAdded(self, objpath):
1636
2253
"D-Bus signal"
1637
2254
pass
1638
2255
1639
@dbus.service.signal(_interface, signature=u"ss")
2256
@dbus.service.signal(_interface, signature="ss")
1640
2257
def ClientNotFound(self, fingerprint, address):
1641
2258
"D-Bus signal"
1642
2259
pass
1643
2260
1644
@dbus.service.signal(_interface, signature=u"os")
2261
@dbus.service.signal(_interface, signature="os")
1645
2262
def ClientRemoved(self, objpath, name):
1646
2263
"D-Bus signal"
1647
2264
pass
1648
2265
1649
@dbus.service.method(_interface, out_signature=u"ao")
2266
@dbus.service.method(_interface, out_signature="ao")
1650
2267
def GetAllClients(self):
1651
2268
"D-Bus method"
1652
2269
return dbus.Array(c.dbus_object_path
1653
for c in tcp_server.clients)
2270
for c in
2271
tcp_server.clients.itervalues())
1654
2272
1655
2273
@dbus.service.method(_interface,
1656
out_signature=u"a{oa{sv}}")
2274
out_signature="a{oa{sv}}")
1657
2275
def GetAllClientsWithProperties(self):
1658
2276
"D-Bus method"
1659
2277
return dbus.Dictionary(
1660
((c.dbus_object_path, c.GetAll(u""))
1661
for c in tcp_server.clients),
1662
signature=u"oa{sv}")
2278
((c.dbus_object_path, c.GetAll(""))
2279
for c in tcp_server.clients.itervalues()),
2280
signature="oa{sv}")
1663
2281
1664
@dbus.service.method(_interface, in_signature=u"o")
2282
@dbus.service.method(_interface, in_signature="o")
1665
2283
def RemoveClient(self, object_path):
1666
2284
"D-Bus method"
1667
for c in tcp_server.clients:
2285
for c in tcp_server.clients.itervalues():
1668
2286
if c.dbus_object_path == object_path:
1669
tcp_server.clients.remove(c)
2287
del tcp_server.clients[c.name]
1670
2288
c.remove_from_connection()
1671
2289
# Don't signal anything except ClientRemoved
1672
2290
c.disable(quiet=True)
1677
2295
1678
2296
del _interface
1679
2297
1680
mandos_dbus_service = MandosDBusService()
2298
class MandosDBusServiceTransitional(MandosDBusService):
2299
__metaclass__ = AlternateDBusNamesMetaclass
2300
mandos_dbus_service = MandosDBusServiceTransitional()
1681
2301
1682
2302
def cleanup():
1683
2303
"Cleanup function; run on exit"
1684
2304
service.cleanup()
1685
2305
2306
multiprocessing.active_children()
2307
if not (tcp_server.clients or client_settings):
2308
return
2309
2310
# Store client before exiting. Secrets are encrypted with key based
2311
# on what config file has. If config file is removed/edited, old
2312
# secret will thus be unrecovable.
2313
clients = []
2314
for client in tcp_server.clients.itervalues():
2315
client.encrypt_secret(client_settings[client.name]["secret"])
2316
2317
client_dict = {}
2318
2319
# A list of attributes that will not be stored when shuting down.
2320
exclude = set(("bus", "changedstate", "secret"))
2321
for name, typ in inspect.getmembers(dbus.service.Object):
2322
exclude.add(name)
2323
2324
client_dict["encrypted_secret"] = client.encrypted_secret
2325
for attr in client.client_structure:
2326
if attr not in exclude:
2327
client_dict[attr] = getattr(client, attr)
2328
2329
clients.append(client_dict)
2330
del client_settings[client.name]["secret"]
2331
2332
try:
2333
with os.fdopen(os.open(stored_state_path, os.O_CREAT|os.O_WRONLY|os.O_TRUNC, 0600), "wb") as stored_state:
2334
pickle.dump((clients, client_settings), stored_state)
2335
except IOError as e:
2336
logger.warning("Could not save persistant state: {0}".format(e))
2337
if e.errno != errno.ENOENT:
2338
raise
2339
2340
# Delete all clients, and settings from config
1686
2341
while tcp_server.clients:
1687
client = tcp_server.clients.pop()
2342
name, client = tcp_server.clients.popitem()
1688
2343
if use_dbus:
1689
2344
client.remove_from_connection()
1690
client.disable_hook = None
1691
2345
# Don't signal anything except ClientRemoved
1692
2346
client.disable(quiet=True)
1693
2347
if use_dbus:
1694
2348
# Emit D-Bus signal
1695
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
2349
mandos_dbus_service.ClientRemoved(client
2350
.dbus_object_path,
1696
2351
client.name)
2352
client_settings.clear()
1697
2353
1698
2354
atexit.register(cleanup)
1699
2355
1700
for client in tcp_server.clients:
2356
for client in tcp_server.clients.itervalues():
1701
2357
if use_dbus:
1702
2358
# Emit D-Bus signal
1703
mandos_dbus_service.ClientAdded(client.dbus_object_path,
1704
client.GetAll(u""))
1705
client.enable()
2359
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2360
# Need to initiate checking of clients
2361
if client.enabled:
2362
client.init_checker()
2363
1706
2364
1707
2365
tcp_server.enable()
1708
2366
tcp_server.server_activate()
1710
2368
# Find out what port we got
1711
2369
service.port = tcp_server.socket.getsockname()[1]
1712
2370
if use_ipv6:
1713
logger.info(u"Now listening on address %r, port %d,"
2371
logger.info("Now listening on address %r, port %d,"
1714
2372
" flowinfo %d, scope_id %d"
1715
2373
% tcp_server.socket.getsockname())
1716
2374
else: # IPv4
1717
logger.info(u"Now listening on address %r, port %d"
2375
logger.info("Now listening on address %r, port %d"
1718
2376
% tcp_server.socket.getsockname())
1719
2377
1720
2378
#service.interface = tcp_server.socket.getsockname()[3]
1723
2381
# From the Avahi example code
1724
2382
try:
1725
2383
service.activate()
1726
except dbus.exceptions.DBusException, error:
1727
logger.critical(u"DBusException: %s", error)
2384
except dbus.exceptions.DBusException as error:
2385
logger.critical("DBusException: %s", error)
1728
2386
cleanup()
1729
2387
sys.exit(1)
1730
2388
# End of Avahi example code
1734
2392
(tcp_server.handle_request
1735
2393
(*args[2:], **kwargs) or True))
1736
2394
1737
logger.debug(u"Starting main loop")
2395
logger.debug("Starting main loop")
1738
2396
main_loop.run()
1739
except AvahiError, error:
1740
logger.critical(u"AvahiError: %s", error)
2397
except AvahiError as error:
2398
logger.critical("AvahiError: %s", error)
1741
2399
cleanup()
1742
2400
sys.exit(1)
1743
2401
except KeyboardInterrupt:
1744
2402
if debug:
1745
print >> sys.stderr
1746
logger.debug(u"Server received KeyboardInterrupt")
1747
logger.debug(u"Server exiting")
2403
print("", file=sys.stderr)
2404
logger.debug("Server received KeyboardInterrupt")
2405
logger.debug("Server exiting")
1748
2406
# Must run before the D-Bus bus name gets deregistered
1749
2407
cleanup()
1750
2408
2409
1751
2410
if __name__ == '__main__':
1752
2411
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0