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- Committer: Teddy Hogeborn
- Date: 2009-09-17 11:42:12 UTC
- Revision ID: teddy@fukt.bsnet.se-20090917114212-bmb2eq0c3modtgme
* TODO: Updated.
- files removed:
- DBUS-API
- debian/source
- files modified:
- .bzrignore
added
removed
mandos
11
11
# "AvahiService" class, and some lines in "main".
12
12
#
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# Everything else is
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# Copyright © 2008-2011 Teddy Hogeborn
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# Copyright © 2008-2011 Björn Påhlsson
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# Copyright © 2008,2009 Teddy Hogeborn
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# Copyright © 2008,2009 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@recompile.se>.
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# Contact the authors at <mandos@fukt.bsnet.se>.
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#
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33
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from __future__ import (division, absolute_import, print_function,
35
unicode_literals)
34
from __future__ import division, with_statement, absolute_import
36
35
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import SocketServer as socketserver
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import socket
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import argparse
38
import optparse
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import datetime
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40
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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import contextlib
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from contextlib import closing
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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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62
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import dbus
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import dbus.service
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from dbus.mainloop.glib import DBusGMainLoop
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import ctypes
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69
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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70
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try:
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SO_BINDTODEVICE = socket.SO_BINDTODEVICE
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SO_BINDTODEVICE = None
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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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version = "1.0.11"
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logger = logging.Logger(u'mandos')
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syslogger = (logging.handlers.SysLogHandler
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(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
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address = str("/dev/log")))
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address = "/dev/log"))
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syslogger.setFormatter(logging.Formatter
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('Mandos [%(process)d]: %(levelname)s:'
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' %(message)s'))
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(u'Mandos [%(process)d]: %(levelname)s:'
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u' %(message)s'))
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logger.addHandler(syslogger)
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console = logging.StreamHandler()
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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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console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
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u' %(levelname)s:'
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u' %(message)s'))
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logger.addHandler(console)
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108
109
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class AvahiError(Exception):
110
98
def __init__(self, value, *args, **kwargs):
111
99
self.value = value
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114
Attributes:
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interface: integer; avahi.IF_UNSPEC or an interface index.
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Used to optionally bind to the specified interface.
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name: string; Example: 'Mandos'
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type: string; Example: '_mandos._tcp'.
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name: string; Example: u'Mandos'
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type: string; Example: u'_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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130
"""
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def __init__(self, interface = avahi.IF_UNSPEC, name = None,
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servicetype = None, port = None, TXT = None,
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domain = "", host = "", max_renames = 32768,
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domain = u"", host = u"", max_renames = 32768,
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protocol = avahi.PROTO_UNSPEC, bus = None):
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self.interface = interface
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self.name = name
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self.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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148
def rename(self):
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"""Derived from the Avahi example code"""
163
150
if self.rename_count >= self.max_renames:
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logger.critical("No suitable Zeroconf service name found"
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" after %i retries, exiting.",
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logger.critical(u"No suitable Zeroconf service name found"
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u" after %i retries, exiting.",
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153
self.rename_count)
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raise AvahiServiceError("Too many renames")
168
self.name = unicode(self.server
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.GetAlternativeServiceName(self.name))
170
logger.info("Changing Zeroconf service name to %r ...",
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self.name)
154
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'
161
% self.name))
172
162
self.remove()
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)
163
self.add()
179
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self.rename_count += 1
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165
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
185
167
if self.group is not None:
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168
self.group.Reset()
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169
def add(self):
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170
"""Derived from the Avahi example code"""
189
self.remove()
190
171
if self.group is None:
191
172
self.group = dbus.Interface(
192
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self.bus.get_object(avahi.DBUS_NAME,
193
174
self.server.EntryGroupNew()),
194
175
avahi.DBUS_INTERFACE_ENTRY_GROUP)
195
self.entry_group_state_changed_match = (
196
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' ...",
176
self.group.connect_to_signal('StateChanged',
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self.entry_group_state_changed)
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logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
199
179
self.name, self.type)
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self.group.AddService(
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self.interface,
208
188
self.group.Commit()
209
189
def entry_group_state_changed(self, state, error):
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"""Derived from the Avahi example code"""
211
logger.debug("Avahi entry group state change: %i", state)
191
logger.debug(u"Avahi state change: %i", state)
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if state == avahi.ENTRY_GROUP_ESTABLISHED:
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logger.debug("Zeroconf service established.")
194
logger.debug(u"Zeroconf service established.")
215
195
elif state == avahi.ENTRY_GROUP_COLLISION:
216
logger.info("Zeroconf service name collision.")
196
logger.warning(u"Zeroconf service name collision.")
217
197
self.rename()
218
198
elif state == avahi.ENTRY_GROUP_FAILURE:
219
logger.critical("Avahi: Error in group state changed %s",
199
logger.critical(u"Avahi: Error in group state changed %s",
220
200
unicode(error))
221
raise AvahiGroupError("State changed: %s"
201
raise AvahiGroupError(u"State changed: %s"
222
202
% unicode(error))
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def cleanup(self):
224
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"""Derived from the Avahi example code"""
225
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if self.group is not None:
226
try:
227
self.group.Free()
228
except (dbus.exceptions.UnknownMethodException,
229
dbus.exceptions.DBusException) as e:
230
pass
206
self.group.Free()
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self.group = None
232
self.remove()
233
def server_state_changed(self, state, error=None):
208
def server_state_changed(self, state):
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"""Derived from the Avahi example code"""
235
logger.debug("Avahi server state change: %i", state)
236
bad_states = { avahi.SERVER_INVALID:
237
"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()
210
if state == avahi.SERVER_COLLISION:
211
logger.error(u"Zeroconf server name collision")
212
self.remove()
250
213
elif state == avahi.SERVER_RUNNING:
251
214
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)
257
215
def activate(self):
258
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"""Derived from the Avahi example code"""
259
217
if self.server is None:
260
218
self.server = dbus.Interface(
261
219
self.bus.get_object(avahi.DBUS_NAME,
262
avahi.DBUS_PATH_SERVER,
263
follow_name_owner_changes=True),
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avahi.DBUS_PATH_SERVER),
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221
avahi.DBUS_INTERFACE_SERVER)
265
self.server.connect_to_signal("StateChanged",
222
self.server.connect_to_signal(u"StateChanged",
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223
self.server_state_changed)
267
224
self.server_state_changed(self.server.GetState())
268
225
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class AvahiServiceToSyslog(AvahiService):
270
def rename(self):
271
"""Add the new name to the syslog messages"""
272
ret = AvahiService.rename(self)
273
syslogger.setFormatter(logging.Formatter
274
('Mandos (%s) [%%(process)d]:'
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' %%(levelname)s: %%(message)s'
276
% self.name))
277
return ret
278
226
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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))
284
285
227
class Client(object):
286
228
"""A representation of a client host served by this server.
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229
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Attributes:
289
_approved: bool(); 'None' if not yet approved/disapproved
290
approval_delay: datetime.timedelta(); Time to wait for approval
291
approval_duration: datetime.timedelta(); Duration of one approval
231
name: string; from the config file, used in log messages and
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D-Bus identifiers
233
fingerprint: string (40 or 32 hexadecimal digits); used to
234
uniquely identify the client
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secret: bytestring; sent verbatim (over TLS) to client
236
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)
239
enabled: bool()
240
last_checked_ok: datetime.datetime(); (UTC) or None
241
timeout: datetime.timedelta(); How long from last_checked_ok
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until this client is invalid
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interval: datetime.timedelta(); How often to start a new checker
244
disable_hook: If set, called by disable() as disable_hook(self)
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checker: subprocess.Popen(); a running checker process used
293
246
to see if the client lives.
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'None' if no process is running.
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checker_callback_tag: a gobject event source tag, or None
296
checker_command: string; External command which is run to check
297
if client lives. %() expansions are done at
248
checker_initiator_tag: a gobject event source tag, or None
249
disable_initiator_tag: - '' -
250
checker_callback_tag: - '' -
251
checker_command: string; External command which is run to check if
252
client lives. %() expansions are done at
298
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runtime with vars(self) as dict, so that for
299
254
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
304
255
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
308
uniquely identify the client
309
host: string; available for use by the checker command
310
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)
317
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
326
256
"""
327
257
328
runtime_expansions = ("approval_delay", "approval_duration",
329
"created", "enabled", "fingerprint",
330
"host", "interval", "last_checked_ok",
331
"last_enabled", "name", "timeout")
258
@staticmethod
259
def _datetime_to_milliseconds(dt):
260
"Convert a datetime.datetime() to milliseconds"
261
return ((dt.days * 24 * 60 * 60 * 1000)
262
+ (dt.seconds * 1000)
263
+ (dt.microseconds // 1000))
332
264
333
265
def timeout_milliseconds(self):
334
266
"Return the 'timeout' attribute in milliseconds"
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)
267
return self._datetime_to_milliseconds(self.timeout)
340
268
341
269
def interval_milliseconds(self):
342
270
"Return the 'interval' attribute in milliseconds"
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):
271
return self._datetime_to_milliseconds(self.interval)
272
273
def __init__(self, name = None, disable_hook=None, config=None):
349
274
"""Note: the 'checker' key in 'config' sets the
350
275
'checker_command' attribute and *not* the 'checker'
351
276
attribute."""
352
277
self.name = name
353
278
if config is None:
354
279
config = {}
355
logger.debug("Creating client %r", self.name)
280
logger.debug(u"Creating client %r", self.name)
356
281
# Uppercase and remove spaces from fingerprint for later
357
282
# comparison purposes with return value from the fingerprint()
358
283
# function
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:
284
self.fingerprint = (config[u"fingerprint"].upper()
285
.replace(u" ", u""))
286
logger.debug(u" Fingerprint: %s", self.fingerprint)
287
if u"secret" in config:
288
self.secret = config[u"secret"].decode(u"base64")
289
elif u"secfile" in config:
290
with closing(open(os.path.expanduser
291
(os.path.expandvars
292
(config[u"secfile"])))) as secfile:
368
293
self.secret = secfile.read()
369
294
else:
370
raise TypeError("No secret or secfile for client %s"
295
raise TypeError(u"No secret or secfile for client %s"
371
296
% self.name)
372
self.host = config.get("host", "")
297
self.host = config.get(u"host", u"")
373
298
self.created = datetime.datetime.utcnow()
374
self.enabled = True
375
self.last_approval_request = None
376
self.last_enabled = datetime.datetime.utcnow()
299
self.enabled = False
300
self.last_enabled = None
377
301
self.last_checked_ok = None
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"])
302
self.timeout = string_to_delta(config[u"timeout"])
303
self.interval = string_to_delta(config[u"interval"])
304
self.disable_hook = disable_hook
383
305
self.checker = None
384
306
self.checker_initiator_tag = None
385
307
self.disable_initiator_tag = None
386
self.expires = datetime.datetime.utcnow() + self.timeout
387
308
self.checker_callback_tag = None
388
self.checker_command = config["checker"]
309
self.checker_command = config[u"checker"]
389
310
self.current_checker_command = 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()
311
self.last_connect = None
414
312
415
313
def enable(self):
416
314
"""Start this client's checker and timeout hooks"""
417
if getattr(self, "enabled", False):
315
if getattr(self, u"enabled", False):
418
316
# Already enabled
419
317
return
420
self.send_changedstate()
421
self.expires = datetime.datetime.utcnow() + self.timeout
318
self.last_enabled = datetime.datetime.utcnow()
319
# Schedule a new checker to be started an 'interval' from now,
320
# and every interval from then on.
321
self.checker_initiator_tag = (gobject.timeout_add
322
(self.interval_milliseconds(),
323
self.start_checker))
324
# Also start a new checker *right now*.
325
self.start_checker()
326
# Schedule a disable() when 'timeout' has passed
327
self.disable_initiator_tag = (gobject.timeout_add
328
(self.timeout_milliseconds(),
329
self.disable))
422
330
self.enabled = True
423
self.last_enabled = datetime.datetime.utcnow()
424
self.init_checker()
425
331
426
def disable(self, quiet=True):
332
def disable(self):
427
333
"""Disable this client."""
428
334
if not getattr(self, "enabled", False):
429
335
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):
336
logger.info(u"Disabling client %s", self.name)
337
if getattr(self, u"disable_initiator_tag", False):
435
338
gobject.source_remove(self.disable_initiator_tag)
436
339
self.disable_initiator_tag = None
437
self.expires = None
438
if getattr(self, "checker_initiator_tag", False):
340
if getattr(self, u"checker_initiator_tag", False):
439
341
gobject.source_remove(self.checker_initiator_tag)
440
342
self.checker_initiator_tag = None
441
343
self.stop_checker()
344
if self.disable_hook:
345
self.disable_hook(self)
442
346
self.enabled = False
443
347
# Do not run this again if called by a gobject.timeout_add
444
348
return False
445
349
446
350
def __del__(self):
351
self.disable_hook = None
447
352
self.disable()
448
449
def init_checker(self):
450
# Schedule a new checker to be started an 'interval' from now,
451
# and every interval from then on.
452
self.checker_initiator_tag = (gobject.timeout_add
453
(self.interval_milliseconds(),
454
self.start_checker))
455
# Schedule a disable() when 'timeout' has passed
456
self.disable_initiator_tag = (gobject.timeout_add
457
(self.timeout_milliseconds(),
458
self.disable))
459
# Also start a new checker *right now*.
460
self.start_checker()
461
462
353
463
354
def checker_callback(self, pid, condition, command):
464
355
"""The checker has completed, so take appropriate actions."""
465
356
self.checker_callback_tag = None
466
357
self.checker = None
467
358
if os.WIFEXITED(condition):
468
self.last_checker_status = os.WEXITSTATUS(condition)
469
if self.last_checker_status == 0:
470
logger.info("Checker for %(name)s succeeded",
359
exitstatus = os.WEXITSTATUS(condition)
360
if exitstatus == 0:
361
logger.info(u"Checker for %(name)s succeeded",
471
362
vars(self))
472
363
self.checked_ok()
473
364
else:
474
logger.info("Checker for %(name)s failed",
365
logger.info(u"Checker for %(name)s failed",
475
366
vars(self))
476
367
else:
477
self.last_checker_status = -1
478
logger.warning("Checker for %(name)s crashed?",
368
logger.warning(u"Checker for %(name)s crashed?",
479
369
vars(self))
480
370
481
def checked_ok(self, timeout=None):
371
def checked_ok(self):
482
372
"""Bump up the timeout for this client.
483
373
484
374
This should only be called when the client has been seen,
485
375
alive and well.
486
376
"""
487
if timeout is None:
488
timeout = self.timeout
489
377
self.last_checked_ok = datetime.datetime.utcnow()
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()
378
gobject.source_remove(self.disable_initiator_tag)
379
self.disable_initiator_tag = (gobject.timeout_add
380
(self.timeout_milliseconds(),
381
self.disable))
500
382
501
383
def start_checker(self):
502
384
"""Start a new checker subprocess if one is not running.
509
391
# client would inevitably timeout, since no checker would get
510
392
# a chance to run to completion. If we instead leave running
511
393
# checkers alone, the checker would have to take more time
512
# than 'timeout' for the client to be disabled, which is as it
513
# should be.
394
# than 'timeout' for the client to be declared invalid, which
395
# is as it should be.
514
396
515
397
# If a checker exists, make sure it is not a zombie
516
try:
398
if self.checker is not None:
517
399
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
518
except (AttributeError, OSError) as error:
519
if (isinstance(error, OSError)
520
and error.errno != errno.ECHILD):
521
raise error
522
else:
523
400
if pid:
524
logger.warning("Checker was a zombie")
401
logger.warning(u"Checker was a zombie")
525
402
gobject.source_remove(self.checker_callback_tag)
526
403
self.checker_callback(pid, status,
527
404
self.current_checker_command)
532
409
command = self.checker_command % self.host
533
410
except TypeError:
534
411
# Escape attributes for the shell
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
412
escaped_attrs = dict((key,
413
re.escape(unicode(str(val),
414
errors=
415
u'replace')))
416
for key, val in
417
vars(self).iteritems())
543
418
try:
544
419
command = self.checker_command % escaped_attrs
545
except TypeError as error:
546
logger.error('Could not format string "%s":'
547
' %s', self.checker_command, error)
420
except TypeError, error:
421
logger.error(u'Could not format string "%s":'
422
u' %s', self.checker_command, error)
548
423
return True # Try again later
549
424
self.current_checker_command = command
550
425
try:
551
logger.info("Starting checker %r for %s",
426
logger.info(u"Starting checker %r for %s",
552
427
command, self.name)
553
428
# We don't need to redirect stdout and stderr, since
554
429
# in normal mode, that is already done by daemon(),
556
431
# always replaced by /dev/null.)
557
432
self.checker = subprocess.Popen(command,
558
433
close_fds=True,
559
shell=True, cwd="/")
434
shell=True, cwd=u"/")
560
435
self.checker_callback_tag = (gobject.child_watch_add
561
436
(self.checker.pid,
562
437
self.checker_callback,
567
442
if pid:
568
443
gobject.source_remove(self.checker_callback_tag)
569
444
self.checker_callback(pid, status, command)
570
except OSError as error:
571
logger.error("Failed to start subprocess: %s",
445
except OSError, error:
446
logger.error(u"Failed to start subprocess: %s",
572
447
error)
573
448
# Re-run this periodically if run by gobject.timeout_add
574
449
return True
578
453
if self.checker_callback_tag:
579
454
gobject.source_remove(self.checker_callback_tag)
580
455
self.checker_callback_tag = None
581
if getattr(self, "checker", None) is None:
456
if getattr(self, u"checker", None) is None:
582
457
return
583
logger.debug("Stopping checker for %(name)s", vars(self))
458
logger.debug(u"Stopping checker for %(name)s", vars(self))
584
459
try:
585
460
os.kill(self.checker.pid, signal.SIGTERM)
586
#time.sleep(0.5)
461
#os.sleep(0.5)
587
462
#if self.checker.poll() is None:
588
463
# os.kill(self.checker.pid, signal.SIGKILL)
589
except OSError as error:
464
except OSError, error:
590
465
if error.errno != errno.ESRCH: # No such process
591
466
raise
592
467
self.checker = None
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
468
469
def still_valid(self):
470
"""Has the timeout not yet passed for this client?"""
471
if not getattr(self, u"enabled", False):
472
return False
473
now = datetime.datetime.utcnow()
474
if self.last_checked_ok is None:
475
return now < (self.created + self.timeout)
636
476
else:
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):
643
"""Decorators for marking methods of a DBusObjectWithProperties to
644
become properties on the D-Bus.
645
646
The decorated method will be called with no arguments by "Get"
647
and with one argument by "Set".
648
649
The parameters, where they are supported, are the same as
650
dbus.service.method, except there is only "signature", since the
651
type from Get() and the type sent to Set() is the same.
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)
658
def decorator(func):
659
func._dbus_is_property = True
660
func._dbus_interface = dbus_interface
661
func._dbus_signature = signature
662
func._dbus_access = access
663
func._dbus_name = func.__name__
664
if func._dbus_name.endswith("_dbus_property"):
665
func._dbus_name = func._dbus_name[:-14]
666
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
667
return func
668
return decorator
669
670
671
class DBusPropertyException(dbus.exceptions.DBusException):
672
"""A base class for D-Bus property-related exceptions
673
"""
674
def __unicode__(self):
675
return unicode(str(self))
676
677
678
class DBusPropertyAccessException(DBusPropertyException):
679
"""A property's access permissions disallows an operation.
680
"""
681
pass
682
683
684
class DBusPropertyNotFound(DBusPropertyException):
685
"""An attempt was made to access a non-existing property.
686
"""
687
pass
688
689
690
class DBusObjectWithProperties(dbus.service.Object):
691
"""A D-Bus object with properties.
692
693
Classes inheriting from this can use the dbus_service_property
694
decorator to expose methods as D-Bus properties. It exposes the
695
standard Get(), Set(), and GetAll() methods on the D-Bus.
696
"""
697
698
@staticmethod
699
def _is_dbus_property(obj):
700
return getattr(obj, "_dbus_is_property", False)
701
702
def _get_all_dbus_properties(self):
703
"""Returns a generator of (name, attribute) pairs
704
"""
705
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
706
for cls in self.__class__.__mro__
707
for name, prop in
708
inspect.getmembers(cls, self._is_dbus_property))
709
710
def _get_dbus_property(self, interface_name, property_name):
711
"""Returns a bound method if one exists which is a D-Bus
712
property with the specified name and interface.
713
"""
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
721
# No such property
722
raise DBusPropertyNotFound(self.dbus_object_path + ":"
723
+ interface_name + "."
724
+ property_name)
725
726
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
727
out_signature="v")
728
def Get(self, interface_name, property_name):
729
"""Standard D-Bus property Get() method, see D-Bus standard.
730
"""
731
prop = self._get_dbus_property(interface_name, property_name)
732
if prop._dbus_access == "write":
733
raise DBusPropertyAccessException(property_name)
734
value = prop()
735
if not hasattr(value, "variant_level"):
736
return value
737
return type(value)(value, variant_level=value.variant_level+1)
738
739
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
740
def Set(self, interface_name, property_name, value):
741
"""Standard D-Bus property Set() method, see D-Bus standard.
742
"""
743
prop = self._get_dbus_property(interface_name, property_name)
744
if prop._dbus_access == "read":
745
raise DBusPropertyAccessException(property_name)
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
751
value = dbus.ByteArray(''.join(unichr(byte)
752
for byte in value))
753
prop(value)
754
755
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
756
out_signature="a{sv}")
757
def GetAll(self, interface_name):
758
"""Standard D-Bus property GetAll() method, see D-Bus
759
standard.
760
761
Note: Will not include properties with access="write".
762
"""
763
all = {}
764
for name, prop in self._get_all_dbus_properties():
765
if (interface_name
766
and interface_name != prop._dbus_interface):
767
# Interface non-empty but did not match
768
continue
769
# Ignore write-only properties
770
if prop._dbus_access == "write":
771
continue
772
value = prop()
773
if not hasattr(value, "variant_level"):
774
all[name] = value
775
continue
776
all[name] = type(value)(value, variant_level=
777
value.variant_level+1)
778
return dbus.Dictionary(all, signature="sv")
779
780
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
781
out_signature="s",
782
path_keyword='object_path',
783
connection_keyword='connection')
784
def Introspect(self, object_path, connection):
785
"""Standard D-Bus method, overloaded to insert property tags.
786
"""
787
xmlstring = dbus.service.Object.Introspect(self, object_path,
788
connection)
789
try:
790
document = xml.dom.minidom.parseString(xmlstring)
791
def make_tag(document, name, prop):
792
e = document.createElement("property")
793
e.setAttribute("name", name)
794
e.setAttribute("type", prop._dbus_signature)
795
e.setAttribute("access", prop._dbus_access)
796
return e
797
for if_tag in document.getElementsByTagName("interface"):
798
for tag in (make_tag(document, name, prop)
799
for name, prop
800
in self._get_all_dbus_properties()
801
if prop._dbus_interface
802
== if_tag.getAttribute("name")):
803
if_tag.appendChild(tag)
804
# Add the names to the return values for the
805
# "org.freedesktop.DBus.Properties" methods
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")
820
document.unlink()
821
except (AttributeError, xml.dom.DOMException,
822
xml.parsers.expat.ExpatError) as error:
823
logger.error("Failed to override Introspection method",
824
error)
825
return xmlstring
826
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
932
class ClientDBus(Client, DBusObjectWithProperties):
477
return now < (self.last_checked_ok + self.timeout)
478
479
480
class ClientDBus(Client, dbus.service.Object):
933
481
"""A Client class using D-Bus
934
482
935
483
Attributes:
936
484
dbus_object_path: dbus.ObjectPath
937
485
bus: dbus.SystemBus()
938
486
"""
939
940
runtime_expansions = (Client.runtime_expansions
941
+ ("dbus_object_path",))
942
943
487
# dbus.service.Object doesn't use super(), so we can't either.
944
488
945
489
def __init__(self, bus = None, *args, **kwargs):
946
490
self.bus = bus
947
491
Client.__init__(self, *args, **kwargs)
948
949
self._approvals_pending = 0
950
492
# Only now, when this client is initialized, can it show up on
951
493
# the D-Bus
952
client_object_name = unicode(self.name).translate(
953
{ord("."): ord("_"),
954
ord("-"): ord("_")})
955
494
self.dbus_object_path = (dbus.ObjectPath
956
("/clients/" + client_object_name))
957
DBusObjectWithProperties.__init__(self, self.bus,
958
self.dbus_object_path)
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
495
(u"/clients/"
496
+ self.name.replace(u".", u"_")))
497
dbus.service.Object.__init__(self, self.bus,
498
self.dbus_object_path)
499
500
@staticmethod
501
def _datetime_to_dbus(dt, variant_level=0):
502
"""Convert a UTC datetime.datetime() to a D-Bus type."""
503
return dbus.String(dt.isoformat(),
504
variant_level=variant_level)
505
506
def enable(self):
507
oldstate = getattr(self, u"enabled", False)
508
r = Client.enable(self)
509
if oldstate != self.enabled:
510
# Emit D-Bus signals
511
self.PropertyChanged(dbus.String(u"enabled"),
512
dbus.Boolean(True, variant_level=1))
513
self.PropertyChanged(
514
dbus.String(u"last_enabled"),
515
self._datetime_to_dbus(self.last_enabled,
516
variant_level=1))
517
return r
518
519
def disable(self, signal = True):
520
oldstate = getattr(self, u"enabled", False)
521
r = Client.disable(self)
522
if signal and oldstate != self.enabled:
523
# Emit D-Bus signal
524
self.PropertyChanged(dbus.String(u"enabled"),
525
dbus.Boolean(False, variant_level=1))
526
return r
1026
527
1027
528
def __del__(self, *args, **kwargs):
1028
529
try:
1029
530
self.remove_from_connection()
1030
531
except LookupError:
1031
532
pass
1032
if hasattr(DBusObjectWithProperties, "__del__"):
1033
DBusObjectWithProperties.__del__(self, *args, **kwargs)
533
if hasattr(dbus.service.Object, u"__del__"):
534
dbus.service.Object.__del__(self, *args, **kwargs)
1034
535
Client.__del__(self, *args, **kwargs)
1035
536
1036
537
def checker_callback(self, pid, condition, command,
1037
538
*args, **kwargs):
1038
539
self.checker_callback_tag = None
1039
540
self.checker = None
541
# Emit D-Bus signal
542
self.PropertyChanged(dbus.String(u"checker_running"),
543
dbus.Boolean(False, variant_level=1))
1040
544
if os.WIFEXITED(condition):
1041
545
exitstatus = os.WEXITSTATUS(condition)
1042
546
# Emit D-Bus signal
1052
556
return Client.checker_callback(self, pid, condition, command,
1053
557
*args, **kwargs)
1054
558
559
def checked_ok(self, *args, **kwargs):
560
r = Client.checked_ok(self, *args, **kwargs)
561
# Emit D-Bus signal
562
self.PropertyChanged(
563
dbus.String(u"last_checked_ok"),
564
(self._datetime_to_dbus(self.last_checked_ok,
565
variant_level=1)))
566
return r
567
1055
568
def start_checker(self, *args, **kwargs):
1056
569
old_checker = self.checker
1057
570
if self.checker is not None:
1064
577
and old_checker_pid != self.checker.pid):
1065
578
# Emit D-Bus signal
1066
579
self.CheckerStarted(self.current_checker_command)
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
580
self.PropertyChanged(
581
dbus.String(u"checker_running"),
582
dbus.Boolean(True, variant_level=1))
583
return r
584
585
def stop_checker(self, *args, **kwargs):
586
old_checker = getattr(self, u"checker", None)
587
r = Client.stop_checker(self, *args, **kwargs)
588
if (old_checker is not None
589
and getattr(self, u"checker", None) is None):
590
self.PropertyChanged(dbus.String(u"checker_running"),
591
dbus.Boolean(False, variant_level=1))
592
return r
593
594
## D-Bus methods & signals
595
_interface = u"se.bsnet.fukt.Mandos.Client"
596
597
# CheckedOK - method
598
@dbus.service.method(_interface)
599
def CheckedOK(self):
600
return self.checked_ok()
1085
601
1086
602
# CheckerCompleted - signal
1087
@dbus.service.signal(_interface, signature="nxs")
603
@dbus.service.signal(_interface, signature=u"nxs")
1088
604
def CheckerCompleted(self, exitcode, waitstatus, command):
1089
605
"D-Bus signal"
1090
606
pass
1091
607
1092
608
# CheckerStarted - signal
1093
@dbus.service.signal(_interface, signature="s")
609
@dbus.service.signal(_interface, signature=u"s")
1094
610
def CheckerStarted(self, command):
1095
611
"D-Bus signal"
1096
612
pass
1097
613
614
# GetAllProperties - method
615
@dbus.service.method(_interface, out_signature=u"a{sv}")
616
def GetAllProperties(self):
617
"D-Bus method"
618
return dbus.Dictionary({
619
dbus.String(u"name"):
620
dbus.String(self.name, variant_level=1),
621
dbus.String(u"fingerprint"):
622
dbus.String(self.fingerprint, variant_level=1),
623
dbus.String(u"host"):
624
dbus.String(self.host, variant_level=1),
625
dbus.String(u"created"):
626
self._datetime_to_dbus(self.created,
627
variant_level=1),
628
dbus.String(u"last_enabled"):
629
(self._datetime_to_dbus(self.last_enabled,
630
variant_level=1)
631
if self.last_enabled is not None
632
else dbus.Boolean(False, variant_level=1)),
633
dbus.String(u"enabled"):
634
dbus.Boolean(self.enabled, variant_level=1),
635
dbus.String(u"last_checked_ok"):
636
(self._datetime_to_dbus(self.last_checked_ok,
637
variant_level=1)
638
if self.last_checked_ok is not None
639
else dbus.Boolean (False, variant_level=1)),
640
dbus.String(u"timeout"):
641
dbus.UInt64(self.timeout_milliseconds(),
642
variant_level=1),
643
dbus.String(u"interval"):
644
dbus.UInt64(self.interval_milliseconds(),
645
variant_level=1),
646
dbus.String(u"checker"):
647
dbus.String(self.checker_command,
648
variant_level=1),
649
dbus.String(u"checker_running"):
650
dbus.Boolean(self.checker is not None,
651
variant_level=1),
652
dbus.String(u"object_path"):
653
dbus.ObjectPath(self.dbus_object_path,
654
variant_level=1)
655
}, signature=u"sv")
656
657
# IsStillValid - method
658
@dbus.service.method(_interface, out_signature=u"b")
659
def IsStillValid(self):
660
return self.still_valid()
661
1098
662
# PropertyChanged - signal
1099
@dbus.service.signal(_interface, signature="sv")
663
@dbus.service.signal(_interface, signature=u"sv")
1100
664
def PropertyChanged(self, property, value):
1101
665
"D-Bus signal"
1102
666
pass
1103
667
1104
# GotSecret - signal
668
# ReceivedSecret - signal
1105
669
@dbus.service.signal(_interface)
1106
def GotSecret(self):
1107
"""D-Bus signal
1108
Is sent after a successful transfer of secret from the Mandos
1109
server to mandos-client
1110
"""
670
def ReceivedSecret(self):
671
"D-Bus signal"
1111
672
pass
1112
673
1113
674
# Rejected - signal
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()
675
@dbus.service.signal(_interface)
676
def Rejected(self):
677
"D-Bus signal"
678
pass
679
680
# SetChecker - method
681
@dbus.service.method(_interface, in_signature=u"s")
682
def SetChecker(self, checker):
683
"D-Bus setter method"
684
self.checker_command = checker
685
# Emit D-Bus signal
686
self.PropertyChanged(dbus.String(u"checker"),
687
dbus.String(self.checker_command,
688
variant_level=1))
689
690
# SetHost - method
691
@dbus.service.method(_interface, in_signature=u"s")
692
def SetHost(self, host):
693
"D-Bus setter method"
694
self.host = host
695
# Emit D-Bus signal
696
self.PropertyChanged(dbus.String(u"host"),
697
dbus.String(self.host, variant_level=1))
698
699
# SetInterval - method
700
@dbus.service.method(_interface, in_signature=u"t")
701
def SetInterval(self, milliseconds):
702
self.interval = datetime.timedelta(0, 0, 0, milliseconds)
703
# Emit D-Bus signal
704
self.PropertyChanged(dbus.String(u"interval"),
705
(dbus.UInt64(self.interval_milliseconds(),
706
variant_level=1)))
707
708
# SetSecret - method
709
@dbus.service.method(_interface, in_signature=u"ay",
710
byte_arrays=True)
711
def SetSecret(self, secret):
712
"D-Bus setter method"
713
self.secret = str(secret)
714
715
# SetTimeout - method
716
@dbus.service.method(_interface, in_signature=u"t")
717
def SetTimeout(self, milliseconds):
718
self.timeout = datetime.timedelta(0, 0, 0, milliseconds)
719
# Emit D-Bus signal
720
self.PropertyChanged(dbus.String(u"timeout"),
721
(dbus.UInt64(self.timeout_milliseconds(),
722
variant_level=1)))
1144
723
1145
724
# Enable - method
1146
725
@dbus.service.method(_interface)
1165
744
def StopChecker(self):
1166
745
self.stop_checker()
1167
746
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):
1203
return dbus.String(self.name)
1204
1205
# Fingerprint - property
1206
@dbus_service_property(_interface, signature="s", access="read")
1207
def Fingerprint_dbus_property(self):
1208
return dbus.String(self.fingerprint)
1209
1210
# Host - property
1211
@dbus_service_property(_interface, signature="s",
1212
access="readwrite")
1213
def Host_dbus_property(self, value=None):
1214
if value is None: # get
1215
return dbus.String(self.host)
1216
self.host = value
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):
1232
if value is None: # get
1233
return dbus.Boolean(self.enabled)
1234
if value:
1235
self.enable()
1236
else:
1237
self.disable()
1238
1239
# LastCheckedOK - property
1240
@dbus_service_property(_interface, signature="s",
1241
access="readwrite")
1242
def LastCheckedOK_dbus_property(self, value=None):
1243
if value is not None:
1244
self.checked_ok()
1245
return
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):
1262
if value is None: # get
1263
return dbus.UInt64(self.timeout_milliseconds())
1264
self.timeout = datetime.timedelta(0, 0, 0, value)
1265
if getattr(self, "disable_initiator_tag", None) is None:
1266
return
1267
# Reschedule timeout
1268
gobject.source_remove(self.disable_initiator_tag)
1269
self.disable_initiator_tag = None
1270
self.expires = None
1271
time_to_die = _timedelta_to_milliseconds((self
1272
.last_checked_ok
1273
+ self.timeout)
1274
- datetime.datetime
1275
.utcnow())
1276
if time_to_die <= 0:
1277
# The timeout has passed
1278
self.disable()
1279
else:
1280
self.expires = (datetime.datetime.utcnow()
1281
+ datetime.timedelta(milliseconds =
1282
time_to_die))
1283
self.disable_initiator_tag = (gobject.timeout_add
1284
(time_to_die, self.disable))
1285
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):
1298
if value is None: # get
1299
return dbus.UInt64(self.interval_milliseconds())
1300
self.interval = datetime.timedelta(0, 0, 0, value)
1301
if getattr(self, "checker_initiator_tag", None) is None:
1302
return
1303
# Reschedule checker run
1304
gobject.source_remove(self.checker_initiator_tag)
1305
self.checker_initiator_tag = (gobject.timeout_add
1306
(value, self.start_checker))
1307
self.start_checker() # Start one now, too
1308
1309
# Checker - property
1310
@dbus_service_property(_interface, signature="s",
1311
access="readwrite")
1312
def Checker_dbus_property(self, value=None):
1313
if value is None: # get
1314
return dbus.String(self.checker_command)
1315
self.checker_command = value
1316
1317
# CheckerRunning - property
1318
@dbus_service_property(_interface, signature="b",
1319
access="readwrite")
1320
def CheckerRunning_dbus_property(self, value=None):
1321
if value is None: # get
1322
return dbus.Boolean(self.checker is not None)
1323
if value:
1324
self.start_checker()
1325
else:
1326
self.stop_checker()
1327
1328
# ObjectPath - property
1329
@dbus_service_property(_interface, signature="o", access="read")
1330
def ObjectPath_dbus_property(self):
1331
return self.dbus_object_path # is already a dbus.ObjectPath
1332
1333
# Secret = property
1334
@dbus_service_property(_interface, signature="ay",
1335
access="write", byte_arrays=True)
1336
def Secret_dbus_property(self, value):
1337
self.secret = str(value)
1338
1339
747
del _interface
1340
748
1341
749
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
1370
750
class ClientHandler(socketserver.BaseRequestHandler, object):
1371
751
"""A class to handle client connections.
1372
752
1374
754
Note: This will run in its own forked process."""
1375
755
1376
756
def handle(self):
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
757
logger.info(u"TCP connection from: %s",
758
unicode(self.client_address))
759
logger.debug(u"IPC Pipe FD: %d", self.server.pipe[1])
760
# Open IPC pipe to parent process
761
with closing(os.fdopen(self.server.pipe[1], u"w", 1)) as ipc:
1383
762
session = (gnutls.connection
1384
763
.ClientSession(self.request,
1385
764
gnutls.connection
1386
765
.X509Credentials()))
1387
766
767
line = self.request.makefile().readline()
768
logger.debug(u"Protocol version: %r", line)
769
try:
770
if int(line.strip().split()[0]) > 1:
771
raise RuntimeError
772
except (ValueError, IndexError, RuntimeError), error:
773
logger.error(u"Unknown protocol version: %s", error)
774
return
775
1388
776
# Note: gnutls.connection.X509Credentials is really a
1389
777
# generic GnuTLS certificate credentials object so long as
1390
778
# no X.509 keys are added to it. Therefore, we can use it
1391
779
# here despite using OpenPGP certificates.
1392
780
1393
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1394
# "+AES-256-CBC", "+SHA1",
1395
# "+COMP-NULL", "+CTYPE-OPENPGP",
1396
# "+DHE-DSS"))
781
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
782
# u"+AES-256-CBC", u"+SHA1",
783
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
784
# u"+DHE-DSS"))
1397
785
# Use a fallback default, since this MUST be set.
1398
786
priority = self.server.gnutls_priority
1399
787
if priority is None:
1400
priority = "NORMAL"
788
priority = u"NORMAL"
1401
789
(gnutls.library.functions
1402
790
.gnutls_priority_set_direct(session._c_object,
1403
791
priority, None))
1404
792
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
1417
793
try:
1418
794
session.handshake()
1419
except gnutls.errors.GNUTLSError as error:
1420
logger.warning("Handshake failed: %s", error)
795
except gnutls.errors.GNUTLSError, error:
796
logger.warning(u"Handshake failed: %s", error)
1421
797
# Do not run session.bye() here: the session is not
1422
798
# established. Just abandon the request.
1423
799
return
1424
logger.debug("Handshake succeeded")
1425
1426
approval_required = False
800
logger.debug(u"Handshake succeeded")
1427
801
try:
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()
802
fpr = self.fingerprint(self.peer_certificate(session))
803
except (TypeError, gnutls.errors.GNUTLSError), error:
804
logger.warning(u"Bad certificate: %s", error)
805
session.bye()
806
return
807
logger.debug(u"Fingerprint: %s", fpr)
1519
808
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")
809
for c in self.server.clients:
810
if c.fingerprint == fpr:
811
client = c
812
break
813
else:
814
ipc.write(u"NOTFOUND %s %s\n"
815
% (fpr, unicode(self.client_address)))
816
session.bye()
817
return
818
# Have to check if client.still_valid(), since it is
819
# possible that the client timed out while establishing
820
# the GnuTLS session.
821
if not client.still_valid():
822
ipc.write(u"INVALID %s\n" % client.name)
823
session.bye()
824
return
825
ipc.write(u"SENDING %s\n" % client.name)
826
sent_size = 0
827
while sent_size < len(client.secret):
828
sent = session.send(client.secret[sent_size:])
829
logger.debug(u"Sent: %d, remaining: %d",
830
sent, len(client.secret)
831
- (sent_size + sent))
832
sent_size += sent
833
session.bye()
1527
834
1528
835
@staticmethod
1529
836
def peer_certificate(session):
1539
846
.gnutls_certificate_get_peers
1540
847
(session._c_object, ctypes.byref(list_size)))
1541
848
if not bool(cert_list) and list_size.value != 0:
1542
raise gnutls.errors.GNUTLSError("error getting peer"
1543
" certificate")
849
raise gnutls.errors.GNUTLSError(u"error getting peer"
850
u" certificate")
1544
851
if list_size.value == 0:
1545
852
return None
1546
853
cert = cert_list[0]
1572
879
if crtverify.value != 0:
1573
880
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1574
881
raise (gnutls.errors.CertificateSecurityError
1575
("Verify failed"))
882
(u"Verify failed"))
1576
883
# New buffer for the fingerprint
1577
884
buf = ctypes.create_string_buffer(20)
1578
885
buf_len = ctypes.c_size_t()
1585
892
# Convert the buffer to a Python bytestring
1586
893
fpr = ctypes.string_at(buf, buf_len.value)
1587
894
# Convert the bytestring to hexadecimal notation
1588
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
895
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1589
896
return hex_fpr
1590
897
1591
898
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 """
899
class ForkingMixInWithPipe(socketserver.ForkingMixIn, object):
900
"""Like socketserver.ForkingMixIn, but also pass a pipe."""
1612
901
def process_request(self, request, client_address):
1613
902
"""Overrides and wraps the original process_request().
1614
903
1615
904
This function creates a new pipe in self.pipe
1616
905
"""
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):
906
self.pipe = os.pipe()
907
super(ForkingMixInWithPipe,
908
self).process_request(request, client_address)
909
os.close(self.pipe[1]) # close write end
910
self.add_pipe(self.pipe[0])
911
def add_pipe(self, pipe):
1625
912
"""Dummy function; override as necessary"""
1626
raise NotImplementedError
1627
1628
1629
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
913
os.close(pipe)
914
915
916
class IPv6_TCPServer(ForkingMixInWithPipe,
1630
917
socketserver.TCPServer, object):
1631
918
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1632
919
1648
935
bind to an address or port if they were not specified."""
1649
936
if self.interface is not None:
1650
937
if SO_BINDTODEVICE is None:
1651
logger.error("SO_BINDTODEVICE does not exist;"
1652
" cannot bind to interface %s",
938
logger.error(u"SO_BINDTODEVICE does not exist;"
939
u" cannot bind to interface %s",
1653
940
self.interface)
1654
941
else:
1655
942
try:
1656
943
self.socket.setsockopt(socket.SOL_SOCKET,
1657
944
SO_BINDTODEVICE,
1658
945
str(self.interface
1659
+ '\0'))
1660
except socket.error as error:
946
+ u'\0'))
947
except socket.error, error:
1661
948
if error[0] == errno.EPERM:
1662
logger.error("No permission to"
1663
" bind to interface %s",
949
logger.error(u"No permission to"
950
u" bind to interface %s",
1664
951
self.interface)
1665
952
elif error[0] == errno.ENOPROTOOPT:
1666
logger.error("SO_BINDTODEVICE not available;"
1667
" cannot bind to interface %s",
953
logger.error(u"SO_BINDTODEVICE not available;"
954
u" cannot bind to interface %s",
1668
955
self.interface)
1669
956
else:
1670
957
raise
1672
959
if self.server_address[0] or self.server_address[1]:
1673
960
if not self.server_address[0]:
1674
961
if self.address_family == socket.AF_INET6:
1675
any_address = "::" # in6addr_any
962
any_address = u"::" # in6addr_any
1676
963
else:
1677
964
any_address = socket.INADDR_ANY
1678
965
self.server_address = (any_address,
1696
983
clients: set of Client objects
1697
984
gnutls_priority GnuTLS priority string
1698
985
use_dbus: Boolean; to emit D-Bus signals or not
986
clients: set of Client objects
987
gnutls_priority GnuTLS priority string
988
use_dbus: Boolean; to emit D-Bus signals or not
1699
989
1700
990
Assumes a gobject.MainLoop event loop.
1701
991
"""
1705
995
self.enabled = False
1706
996
self.clients = clients
1707
997
if self.clients is None:
1708
self.clients = {}
998
self.clients = set()
1709
999
self.use_dbus = use_dbus
1710
1000
self.gnutls_priority = gnutls_priority
1711
1001
IPv6_TCPServer.__init__(self, server_address,
1715
1005
def server_activate(self):
1716
1006
if self.enabled:
1717
1007
return socketserver.TCPServer.server_activate(self)
1718
1719
1008
def enable(self):
1720
1009
self.enabled = True
1721
1722
def add_pipe(self, parent_pipe, proc):
1010
def add_pipe(self, pipe):
1723
1011
# Call "handle_ipc" for both data and EOF events
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):
1012
gobject.io_add_watch(pipe, gobject.IO_IN | gobject.IO_HUP,
1013
self.handle_ipc)
1014
def handle_ipc(self, source, condition, file_objects={}):
1733
1015
condition_names = {
1734
gobject.IO_IN: "IN", # There is data to read.
1735
gobject.IO_OUT: "OUT", # Data can be written (without
1016
gobject.IO_IN: u"IN", # There is data to read.
1017
gobject.IO_OUT: u"OUT", # Data can be written (without
1736
1018
# blocking).
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
1019
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1020
gobject.IO_ERR: u"ERR", # Error condition.
1021
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1740
1022
# broken, usually for pipes and
1741
1023
# sockets).
1742
1024
}
1744
1026
for cond, name in
1745
1027
condition_names.iteritems()
1746
1028
if cond & condition)
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
1029
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1030
conditions_string)
1031
1032
# Turn the pipe file descriptor into a Python file object
1033
if source not in file_objects:
1034
file_objects[source] = os.fdopen(source, u"r", 1)
1035
1036
# Read a line from the file object
1037
cmdline = file_objects[source].readline()
1038
if not cmdline: # Empty line means end of file
1039
# close the IPC pipe
1040
file_objects[source].close()
1041
del file_objects[source]
1042
1043
# Stop calling this function
1044
return False
1045
1046
logger.debug(u"IPC command: %r", cmdline)
1047
1048
# Parse and act on command
1049
cmd, args = cmdline.rstrip(u"\r\n").split(None, 1)
1050
1051
if cmd == u"NOTFOUND":
1052
logger.warning(u"Client not found for fingerprint: %s",
1053
args)
1054
if self.use_dbus:
1055
# Emit D-Bus signal
1056
mandos_dbus_service.ClientNotFound(args)
1057
elif cmd == u"INVALID":
1058
for client in self.clients:
1059
if client.name == args:
1060
logger.warning(u"Client %s is invalid", args)
1061
if self.use_dbus:
1062
# Emit D-Bus signal
1063
client.Rejected()
1064
break
1065
else:
1066
logger.error(u"Unknown client %s is invalid", args)
1067
elif cmd == u"SENDING":
1068
for client in self.clients:
1069
if client.name == args:
1070
logger.info(u"Sending secret to %s", client.name)
1071
client.checked_ok()
1072
if self.use_dbus:
1073
# Emit D-Bus signal
1074
client.ReceivedSecret()
1075
break
1076
else:
1077
logger.error(u"Sending secret to unknown client %s",
1078
args)
1079
else:
1080
logger.error(u"Unknown IPC command: %r", cmdline)
1081
1082
# Keep calling this function
1809
1083
return True
1810
1084
1811
1085
1812
1086
def string_to_delta(interval):
1813
1087
"""Parse a string and return a datetime.timedelta
1814
1088
1815
>>> string_to_delta('7d')
1089
>>> string_to_delta(u'7d')
1816
1090
datetime.timedelta(7)
1817
>>> string_to_delta('60s')
1091
>>> string_to_delta(u'60s')
1818
1092
datetime.timedelta(0, 60)
1819
>>> string_to_delta('60m')
1093
>>> string_to_delta(u'60m')
1820
1094
datetime.timedelta(0, 3600)
1821
>>> string_to_delta('24h')
1095
>>> string_to_delta(u'24h')
1822
1096
datetime.timedelta(1)
1823
>>> string_to_delta('1w')
1097
>>> string_to_delta(u'1w')
1824
1098
datetime.timedelta(7)
1825
>>> string_to_delta('5m 30s')
1099
>>> string_to_delta(u'5m 30s')
1826
1100
datetime.timedelta(0, 330)
1827
1101
"""
1828
1102
timevalue = datetime.timedelta(0)
1830
1104
try:
1831
1105
suffix = unicode(s[-1])
1832
1106
value = int(s[:-1])
1833
if suffix == "d":
1107
if suffix == u"d":
1834
1108
delta = datetime.timedelta(value)
1835
elif suffix == "s":
1109
elif suffix == u"s":
1836
1110
delta = datetime.timedelta(0, value)
1837
elif suffix == "m":
1111
elif suffix == u"m":
1838
1112
delta = datetime.timedelta(0, 0, 0, 0, value)
1839
elif suffix == "h":
1113
elif suffix == u"h":
1840
1114
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1841
elif suffix == "w":
1115
elif suffix == u"w":
1842
1116
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1843
1117
else:
1844
raise ValueError("Unknown suffix %r" % suffix)
1845
except (ValueError, IndexError) as e:
1846
raise ValueError(*(e.args))
1118
raise ValueError
1119
except (ValueError, IndexError):
1120
raise ValueError
1847
1121
timevalue += delta
1848
1122
return timevalue
1849
1123
1855
1129
global if_nametoindex
1856
1130
try:
1857
1131
if_nametoindex = (ctypes.cdll.LoadLibrary
1858
(ctypes.util.find_library("c"))
1132
(ctypes.util.find_library(u"c"))
1859
1133
.if_nametoindex)
1860
1134
except (OSError, AttributeError):
1861
logger.warning("Doing if_nametoindex the hard way")
1135
logger.warning(u"Doing if_nametoindex the hard way")
1862
1136
def if_nametoindex(interface):
1863
1137
"Get an interface index the hard way, i.e. using fcntl()"
1864
1138
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1865
with contextlib.closing(socket.socket()) as s:
1139
with closing(socket.socket()) as s:
1866
1140
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1867
struct.pack(str("16s16x"),
1141
struct.pack(str(u"16s16x"),
1868
1142
interface))
1869
interface_index = struct.unpack(str("I"),
1143
interface_index = struct.unpack(str(u"I"),
1870
1144
ifreq[16:20])[0]
1871
1145
return interface_index
1872
1146
return if_nametoindex(interface)
1880
1154
sys.exit()
1881
1155
os.setsid()
1882
1156
if not nochdir:
1883
os.chdir("/")
1157
os.chdir(u"/")
1884
1158
if os.fork():
1885
1159
sys.exit()
1886
1160
if not noclose:
1888
1162
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1889
1163
if not stat.S_ISCHR(os.fstat(null).st_mode):
1890
1164
raise OSError(errno.ENODEV,
1891
"%s not a character device"
1892
% os.path.devnull)
1165
u"/dev/null not a character device")
1893
1166
os.dup2(null, sys.stdin.fileno())
1894
1167
os.dup2(null, sys.stdout.fileno())
1895
1168
os.dup2(null, sys.stderr.fileno())
1899
1172
1900
1173
def main():
1901
1174
1902
##################################################################
1175
######################################################################
1903
1176
# Parsing of options, both command line and config file
1904
1177
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()
1178
parser = optparse.OptionParser(version = "%%prog %s" % version)
1179
parser.add_option("-i", u"--interface", type=u"string",
1180
metavar="IF", help=u"Bind to interface IF")
1181
parser.add_option("-a", u"--address", type=u"string",
1182
help=u"Address to listen for requests on")
1183
parser.add_option("-p", u"--port", type=u"int",
1184
help=u"Port number to receive requests on")
1185
parser.add_option("--check", action=u"store_true",
1186
help=u"Run self-test")
1187
parser.add_option("--debug", action=u"store_true",
1188
help=u"Debug mode; run in foreground and log to"
1189
u" terminal")
1190
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1191
u" priority string (see GnuTLS documentation)")
1192
parser.add_option("--servicename", type=u"string",
1193
metavar=u"NAME", help=u"Zeroconf service name")
1194
parser.add_option("--configdir", type=u"string",
1195
default=u"/etc/mandos", metavar=u"DIR",
1196
help=u"Directory to search for configuration"
1197
u" files")
1198
parser.add_option("--no-dbus", action=u"store_false",
1199
dest=u"use_dbus", help=u"Do not provide D-Bus"
1200
u" system bus interface")
1201
parser.add_option("--no-ipv6", action=u"store_false",
1202
dest=u"use_ipv6", help=u"Do not use IPv6")
1203
options = parser.parse_args()[0]
1940
1204
1941
1205
if options.check:
1942
1206
import doctest
1944
1208
sys.exit()
1945
1209
1946
1210
# Default values for config file for server-global settings
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": "",
1211
server_defaults = { u"interface": u"",
1212
u"address": u"",
1213
u"port": u"",
1214
u"debug": u"False",
1215
u"priority":
1216
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1217
u"servicename": u"Mandos",
1218
u"use_dbus": u"True",
1219
u"use_ipv6": u"True",
1957
1220
}
1958
1221
1959
1222
# Parse config file for server-global settings
1960
1223
server_config = configparser.SafeConfigParser(server_defaults)
1961
1224
del server_defaults
1962
1225
server_config.read(os.path.join(options.configdir,
1963
"mandos.conf"))
1226
u"mandos.conf"))
1964
1227
# Convert the SafeConfigParser object to a dict
1965
1228
server_settings = server_config.defaults()
1966
1229
# Use the appropriate methods on the non-string config options
1967
for option in ("debug", "use_dbus", "use_ipv6"):
1968
server_settings[option] = server_config.getboolean("DEFAULT",
1230
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1231
server_settings[option] = server_config.getboolean(u"DEFAULT",
1969
1232
option)
1970
1233
if server_settings["port"]:
1971
server_settings["port"] = server_config.getint("DEFAULT",
1972
"port")
1234
server_settings["port"] = server_config.getint(u"DEFAULT",
1235
u"port")
1973
1236
del server_config
1974
1237
1975
1238
# Override the settings from the config file with command line
1976
1239
# options, if set.
1977
for option in ("interface", "address", "port", "debug",
1978
"priority", "servicename", "configdir",
1979
"use_dbus", "use_ipv6", "debuglevel", "restore"):
1240
for option in (u"interface", u"address", u"port", u"debug",
1241
u"priority", u"servicename", u"configdir",
1242
u"use_dbus", u"use_ipv6"):
1980
1243
value = getattr(options, option)
1981
1244
if value is not None:
1982
1245
server_settings[option] = value
1990
1253
##################################################################
1991
1254
1992
1255
# For convenience
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":
1256
debug = server_settings[u"debug"]
1257
use_dbus = server_settings[u"use_dbus"]
1258
use_ipv6 = server_settings[u"use_ipv6"]
1259
1260
if not debug:
1261
syslogger.setLevel(logging.WARNING)
1262
console.setLevel(logging.WARNING)
1263
1264
if server_settings[u"servicename"] != u"Mandos":
1999
1265
syslogger.setFormatter(logging.Formatter
2000
('Mandos (%s) [%%(process)d]:'
2001
' %%(levelname)s: %%(message)s'
2002
% server_settings["servicename"]))
1266
(u'Mandos (%s) [%%(process)d]:'
1267
u' %%(levelname)s: %%(message)s'
1268
% server_settings[u"servicename"]))
2003
1269
2004
1270
# Parse config file with clients
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",
1271
client_defaults = { u"timeout": u"1h",
1272
u"interval": u"5m",
1273
u"checker": u"fping -q -- %%(host)s",
1274
u"host": u"",
2012
1275
}
2013
1276
client_config = configparser.SafeConfigParser(client_defaults)
2014
client_config.read(os.path.join(server_settings["configdir"],
2015
"clients.conf"))
1277
client_config.read(os.path.join(server_settings[u"configdir"],
1278
u"clients.conf"))
2016
1279
2017
1280
global mandos_dbus_service
2018
1281
mandos_dbus_service = None
2019
1282
2020
tcp_server = MandosServer((server_settings["address"],
2021
server_settings["port"]),
1283
tcp_server = MandosServer((server_settings[u"address"],
1284
server_settings[u"port"]),
2022
1285
ClientHandler,
2023
interface=(server_settings["interface"]
2024
or None),
1286
interface=server_settings[u"interface"],
2025
1287
use_ipv6=use_ipv6,
2026
1288
gnutls_priority=
2027
server_settings["priority"],
1289
server_settings[u"priority"],
2028
1290
use_dbus=use_dbus)
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)
1291
pidfilename = u"/var/run/mandos.pid"
1292
try:
1293
pidfile = open(pidfilename, u"w")
1294
except IOError:
1295
logger.error(u"Could not open file %r", pidfilename)
2035
1296
2036
1297
try:
2037
uid = pwd.getpwnam("_mandos").pw_uid
2038
gid = pwd.getpwnam("_mandos").pw_gid
1298
uid = pwd.getpwnam(u"_mandos").pw_uid
1299
gid = pwd.getpwnam(u"_mandos").pw_gid
2039
1300
except KeyError:
2040
1301
try:
2041
uid = pwd.getpwnam("mandos").pw_uid
2042
gid = pwd.getpwnam("mandos").pw_gid
1302
uid = pwd.getpwnam(u"mandos").pw_uid
1303
gid = pwd.getpwnam(u"mandos").pw_gid
2043
1304
except KeyError:
2044
1305
try:
2045
uid = pwd.getpwnam("nobody").pw_uid
2046
gid = pwd.getpwnam("nobody").pw_gid
1306
uid = pwd.getpwnam(u"nobody").pw_uid
1307
gid = pwd.getpwnam(u"nobody").pw_gid
2047
1308
except KeyError:
2048
1309
uid = 65534
2049
1310
gid = 65534
2050
1311
try:
2051
1312
os.setgid(gid)
2052
1313
os.setuid(uid)
2053
except OSError as error:
1314
except OSError, error:
2054
1315
if error[0] != errno.EPERM:
2055
1316
raise error
2056
1317
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
1318
# Enable all possible GnuTLS debugging
2063
1319
if debug:
2064
logger.setLevel(logging.DEBUG)
2065
# Enable all possible GnuTLS debugging
2066
2067
1320
# "Use a log level over 10 to enable all debugging options."
2068
1321
# - GnuTLS manual
2069
1322
gnutls.library.functions.gnutls_global_set_log_level(11)
2070
1323
2071
1324
@gnutls.library.types.gnutls_log_func
2072
1325
def debug_gnutls(level, string):
2073
logger.debug("GnuTLS: %s", string[:-1])
1326
logger.debug(u"GnuTLS: %s", string[:-1])
2074
1327
2075
1328
(gnutls.library.functions
2076
1329
.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()
2091
1330
2092
1331
global main_loop
2093
1332
# From the Avahi example code
2096
1335
bus = dbus.SystemBus()
2097
1336
# End of Avahi example code
2098
1337
if use_dbus:
2099
try:
2100
bus_name = dbus.service.BusName("se.recompile.Mandos",
2101
bus, do_not_queue=True)
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")
2107
use_dbus = False
2108
server_settings["use_dbus"] = False
2109
tcp_server.use_dbus = False
1338
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos", bus)
2110
1339
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2111
service = AvahiServiceToSyslog(name =
2112
server_settings["servicename"],
2113
servicetype = "_mandos._tcp",
2114
protocol = protocol, bus = bus)
1340
service = AvahiService(name = server_settings[u"servicename"],
1341
servicetype = u"_mandos._tcp",
1342
protocol = protocol, bus = bus)
2115
1343
if server_settings["interface"]:
2116
1344
service.interface = (if_nametoindex
2117
(str(server_settings["interface"])))
2118
2119
global multiprocessing_manager
2120
multiprocessing_manager = multiprocessing.Manager()
1345
(str(server_settings[u"interface"])))
2121
1346
2122
1347
client_class = Client
2123
1348
if use_dbus:
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
1349
client_class = functools.partial(ClientDBus, bus = bus)
1350
tcp_server.clients.update(set(
1351
client_class(name = section,
1352
config= dict(client_config.items(section)))
1353
for section in client_config.sections()))
2222
1354
if not tcp_server.clients:
2223
logger.warning("No clients defined")
1355
logger.warning(u"No clients defined")
1356
1357
if debug:
1358
# Redirect stdin so all checkers get /dev/null
1359
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1360
os.dup2(null, sys.stdin.fileno())
1361
if null > 2:
1362
os.close(null)
1363
else:
1364
# No console logging
1365
logger.removeHandler(console)
1366
# Close all input and output, do double fork, etc.
1367
daemon()
1368
1369
try:
1370
with closing(pidfile):
1371
pid = os.getpid()
1372
pidfile.write(str(pid) + "\n")
1373
del pidfile
1374
except IOError:
1375
logger.error(u"Could not write to file %r with PID %d",
1376
pidfilename, pid)
1377
except NameError:
1378
# "pidfile" was never created
1379
pass
1380
del pidfilename
1381
1382
def cleanup():
1383
"Cleanup function; run on exit"
1384
service.cleanup()
2224
1385
1386
while tcp_server.clients:
1387
client = tcp_server.clients.pop()
1388
client.disable_hook = None
1389
client.disable()
1390
1391
atexit.register(cleanup)
1392
2225
1393
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
2239
1394
signal.signal(signal.SIGINT, signal.SIG_IGN)
2240
2241
1395
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2242
1396
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2243
1397
2245
1399
class MandosDBusService(dbus.service.Object):
2246
1400
"""A D-Bus proxy object"""
2247
1401
def __init__(self):
2248
dbus.service.Object.__init__(self, bus, "/")
2249
_interface = "se.recompile.Mandos"
2250
2251
@dbus.service.signal(_interface, signature="o")
2252
def ClientAdded(self, objpath):
2253
"D-Bus signal"
2254
pass
2255
2256
@dbus.service.signal(_interface, signature="ss")
2257
def ClientNotFound(self, fingerprint, address):
2258
"D-Bus signal"
2259
pass
2260
2261
@dbus.service.signal(_interface, signature="os")
1402
dbus.service.Object.__init__(self, bus, u"/")
1403
_interface = u"se.bsnet.fukt.Mandos"
1404
1405
@dbus.service.signal(_interface, signature=u"oa{sv}")
1406
def ClientAdded(self, objpath, properties):
1407
"D-Bus signal"
1408
pass
1409
1410
@dbus.service.signal(_interface, signature=u"s")
1411
def ClientNotFound(self, fingerprint):
1412
"D-Bus signal"
1413
pass
1414
1415
@dbus.service.signal(_interface, signature=u"os")
2262
1416
def ClientRemoved(self, objpath, name):
2263
1417
"D-Bus signal"
2264
1418
pass
2265
1419
2266
@dbus.service.method(_interface, out_signature="ao")
1420
@dbus.service.method(_interface, out_signature=u"ao")
2267
1421
def GetAllClients(self):
2268
1422
"D-Bus method"
2269
1423
return dbus.Array(c.dbus_object_path
2270
for c in
2271
tcp_server.clients.itervalues())
1424
for c in tcp_server.clients)
2272
1425
2273
1426
@dbus.service.method(_interface,
2274
out_signature="a{oa{sv}}")
1427
out_signature=u"a{oa{sv}}")
2275
1428
def GetAllClientsWithProperties(self):
2276
1429
"D-Bus method"
2277
1430
return dbus.Dictionary(
2278
((c.dbus_object_path, c.GetAll(""))
2279
for c in tcp_server.clients.itervalues()),
2280
signature="oa{sv}")
1431
((c.dbus_object_path, c.GetAllProperties())
1432
for c in tcp_server.clients),
1433
signature=u"oa{sv}")
2281
1434
2282
@dbus.service.method(_interface, in_signature="o")
1435
@dbus.service.method(_interface, in_signature=u"o")
2283
1436
def RemoveClient(self, object_path):
2284
1437
"D-Bus method"
2285
for c in tcp_server.clients.itervalues():
1438
for c in tcp_server.clients:
2286
1439
if c.dbus_object_path == object_path:
2287
del tcp_server.clients[c.name]
1440
tcp_server.clients.remove(c)
2288
1441
c.remove_from_connection()
2289
1442
# Don't signal anything except ClientRemoved
2290
c.disable(quiet=True)
1443
c.disable(signal=False)
2291
1444
# Emit D-Bus signal
2292
1445
self.ClientRemoved(object_path, c.name)
2293
1446
return
2294
raise KeyError(object_path)
1447
raise KeyError
2295
1448
2296
1449
del _interface
2297
1450
2298
class MandosDBusServiceTransitional(MandosDBusService):
2299
__metaclass__ = AlternateDBusNamesMetaclass
2300
mandos_dbus_service = MandosDBusServiceTransitional()
2301
2302
def cleanup():
2303
"Cleanup function; run on exit"
2304
service.cleanup()
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
2341
while tcp_server.clients:
2342
name, client = tcp_server.clients.popitem()
2343
if use_dbus:
2344
client.remove_from_connection()
2345
# Don't signal anything except ClientRemoved
2346
client.disable(quiet=True)
2347
if use_dbus:
2348
# Emit D-Bus signal
2349
mandos_dbus_service.ClientRemoved(client
2350
.dbus_object_path,
2351
client.name)
2352
client_settings.clear()
2353
2354
atexit.register(cleanup)
2355
2356
for client in tcp_server.clients.itervalues():
1451
mandos_dbus_service = MandosDBusService()
1452
1453
for client in tcp_server.clients:
2357
1454
if use_dbus:
2358
1455
# Emit D-Bus signal
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
1456
mandos_dbus_service.ClientAdded(client.dbus_object_path,
1457
client.GetAllProperties())
1458
client.enable()
2364
1459
2365
1460
tcp_server.enable()
2366
1461
tcp_server.server_activate()
2368
1463
# Find out what port we got
2369
1464
service.port = tcp_server.socket.getsockname()[1]
2370
1465
if use_ipv6:
2371
logger.info("Now listening on address %r, port %d,"
1466
logger.info(u"Now listening on address %r, port %d,"
2372
1467
" flowinfo %d, scope_id %d"
2373
1468
% tcp_server.socket.getsockname())
2374
1469
else: # IPv4
2375
logger.info("Now listening on address %r, port %d"
1470
logger.info(u"Now listening on address %r, port %d"
2376
1471
% tcp_server.socket.getsockname())
2377
1472
2378
1473
#service.interface = tcp_server.socket.getsockname()[3]
2381
1476
# From the Avahi example code
2382
1477
try:
2383
1478
service.activate()
2384
except dbus.exceptions.DBusException as error:
2385
logger.critical("DBusException: %s", error)
2386
cleanup()
1479
except dbus.exceptions.DBusException, error:
1480
logger.critical(u"DBusException: %s", error)
2387
1481
sys.exit(1)
2388
1482
# End of Avahi example code
2389
1483
2392
1486
(tcp_server.handle_request
2393
1487
(*args[2:], **kwargs) or True))
2394
1488
2395
logger.debug("Starting main loop")
1489
logger.debug(u"Starting main loop")
2396
1490
main_loop.run()
2397
except AvahiError as error:
2398
logger.critical("AvahiError: %s", error)
2399
cleanup()
1491
except AvahiError, error:
1492
logger.critical(u"AvahiError: %s", error)
2400
1493
sys.exit(1)
2401
1494
except KeyboardInterrupt:
2402
1495
if debug:
2403
print("", file=sys.stderr)
2404
logger.debug("Server received KeyboardInterrupt")
2405
logger.debug("Server exiting")
2406
# Must run before the D-Bus bus name gets deregistered
2407
cleanup()
2408
1496
print >> sys.stderr
1497
logger.debug(u"Server received KeyboardInterrupt")
1498
logger.debug(u"Server exiting")
2409
1499
2410
1500
if __name__ == '__main__':
2411
1501
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0