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- Committer: Teddy Hogeborn
- Date: 2011-07-16 00:29:19 UTC
- Revision ID: teddy@fukt.bsnet.se-20110716002919-r77yikuiulj42o40
* initramfs-tools-script: Abort if plugin-runner is missing. Removed
workaround for Debian bug #633582; the
workaround required getopt, which can not be
guaranteed.
* plugin-runner.c (main): Work around Debian bug #633582.
* plugins.d/mandos-client.c (main): - '' -
workaround for Debian bug #633582; the
workaround required getopt, which can not be
guaranteed.
* plugin-runner.c (main): Work around Debian bug #633582.
* plugins.d/mandos-client.c (main): - '' -
- files added:
- DBUS-API
- debian/source
- files modified:
- .bzrignore
added
removed
mandos
11
11
# "AvahiService" class, and some lines in "main".
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#
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# Everything else is
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# Copyright © 2008,2009 Teddy Hogeborn
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# Copyright © 2008,2009 Björn Påhlsson
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# Copyright © 2008-2011 Teddy Hogeborn
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# Copyright © 2008-2011 Björn Påhlsson
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# Contact the authors at <mandos@fukt.bsnet.se>.
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#
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from __future__ import division, with_statement, absolute_import
34
from __future__ import (division, absolute_import, print_function,
35
unicode_literals)
35
36
36
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import SocketServer as socketserver
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import socket
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import optparse
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import argparse
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import datetime
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import errno
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import gnutls.crypto
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import logging
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import logging.handlers
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import pwd
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from contextlib import closing
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import contextlib
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import struct
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import fcntl
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import functools
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import cPickle as pickle
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import multiprocessing
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65
63
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import dbus
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import dbus.service
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SO_BINDTODEVICE = None
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version = "1.0.12"
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version = "1.3.0"
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86
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logger = logging.Logger(u'mandos')
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#logger = logging.getLogger('mandos')
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logger = logging.Logger('mandos')
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syslogger = (logging.handlers.SysLogHandler
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(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
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address = "/dev/log"))
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address = str("/dev/log")))
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syslogger.setFormatter(logging.Formatter
89
(u'Mandos [%(process)d]: %(levelname)s:'
90
u' %(message)s'))
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('Mandos [%(process)d]: %(levelname)s:'
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' %(message)s'))
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logger.addHandler(syslogger)
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console = logging.StreamHandler()
94
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
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u' %(levelname)s:'
96
u' %(message)s'))
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console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'
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' %(levelname)s:'
100
' %(message)s'))
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logger.addHandler(console)
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class AvahiError(Exception):
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120
Attributes:
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121
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: u'Mandos'
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type: string; Example: u'_mandos._tcp'.
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name: string; Example: 'Mandos'
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type: string; Example: '_mandos._tcp'.
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125
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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136
"""
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def __init__(self, interface = avahi.IF_UNSPEC, name = None,
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servicetype = None, port = None, TXT = None,
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domain = u"", host = u"", max_renames = 32768,
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domain = "", host = "", max_renames = 32768,
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protocol = avahi.PROTO_UNSPEC, bus = None):
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self.interface = interface
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self.name = name
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self.group = None # our entry group
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self.server = None
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self.bus = bus
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self.entry_group_state_changed_match = None
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def rename(self):
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"""Derived from the Avahi example code"""
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if self.rename_count >= self.max_renames:
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logger.critical(u"No suitable Zeroconf service name found"
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u" after %i retries, exiting.",
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logger.critical("No suitable Zeroconf service name found"
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" after %i retries, exiting.",
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self.rename_count)
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raise AvahiServiceError(u"Too many renames")
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self.name = self.server.GetAlternativeServiceName(self.name)
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logger.info(u"Changing Zeroconf service name to %r ...",
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unicode(self.name))
161
raise AvahiServiceError("Too many renames")
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self.name = unicode(self.server.GetAlternativeServiceName(self.name))
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logger.info("Changing Zeroconf service name to %r ...",
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self.name)
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syslogger.setFormatter(logging.Formatter
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(u'Mandos (%s) [%%(process)d]:'
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u' %%(levelname)s: %%(message)s'
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('Mandos (%s) [%%(process)d]:'
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' %%(levelname)s: %%(message)s'
163
168
% self.name))
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self.remove()
165
self.add()
170
try:
171
self.add()
172
except dbus.exceptions.DBusException as error:
173
logger.critical("DBusException: %s", error)
174
self.cleanup()
175
os._exit(1)
166
176
self.rename_count += 1
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def remove(self):
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"""Derived from the Avahi example code"""
179
if self.entry_group_state_changed_match is not None:
180
self.entry_group_state_changed_match.remove()
181
self.entry_group_state_changed_match = None
169
182
if self.group is not None:
170
183
self.group.Reset()
171
184
def add(self):
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"""Derived from the Avahi example code"""
186
self.remove()
173
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if self.group is None:
174
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self.group = dbus.Interface(
175
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self.bus.get_object(avahi.DBUS_NAME,
176
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self.server.EntryGroupNew()),
177
191
avahi.DBUS_INTERFACE_ENTRY_GROUP)
178
self.group.connect_to_signal('StateChanged',
179
self
180
.entry_group_state_changed)
181
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
192
self.entry_group_state_changed_match = (
193
self.group.connect_to_signal(
194
'StateChanged', self .entry_group_state_changed))
195
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
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self.name, self.type)
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self.group.AddService(
184
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self.interface,
191
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self.group.Commit()
192
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def entry_group_state_changed(self, state, error):
193
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"""Derived from the Avahi example code"""
194
logger.debug(u"Avahi state change: %i", state)
208
logger.debug("Avahi entry group state change: %i", state)
195
209
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if state == avahi.ENTRY_GROUP_ESTABLISHED:
197
logger.debug(u"Zeroconf service established.")
211
logger.debug("Zeroconf service established.")
198
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elif state == avahi.ENTRY_GROUP_COLLISION:
199
logger.warning(u"Zeroconf service name collision.")
213
logger.info("Zeroconf service name collision.")
200
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self.rename()
201
215
elif state == avahi.ENTRY_GROUP_FAILURE:
202
logger.critical(u"Avahi: Error in group state changed %s",
216
logger.critical("Avahi: Error in group state changed %s",
203
217
unicode(error))
204
raise AvahiGroupError(u"State changed: %s"
218
raise AvahiGroupError("State changed: %s"
205
219
% unicode(error))
206
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def cleanup(self):
207
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"""Derived from the Avahi example code"""
208
222
if self.group is not None:
209
self.group.Free()
223
try:
224
self.group.Free()
225
except (dbus.exceptions.UnknownMethodException,
226
dbus.exceptions.DBusException) as e:
227
pass
210
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self.group = None
211
def server_state_changed(self, state):
229
self.remove()
230
def server_state_changed(self, state, error=None):
212
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"""Derived from the Avahi example code"""
213
if state == avahi.SERVER_COLLISION:
214
logger.error(u"Zeroconf server name collision")
215
self.remove()
232
logger.debug("Avahi server state change: %i", state)
233
bad_states = { avahi.SERVER_INVALID:
234
"Zeroconf server invalid",
235
avahi.SERVER_REGISTERING: None,
236
avahi.SERVER_COLLISION:
237
"Zeroconf server name collision",
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avahi.SERVER_FAILURE:
239
"Zeroconf server failure" }
240
if state in bad_states:
241
if bad_states[state] is not None:
242
if error is None:
243
logger.error(bad_states[state])
244
else:
245
logger.error(bad_states[state] + ": %r", error)
246
self.cleanup()
216
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elif state == avahi.SERVER_RUNNING:
217
248
self.add()
249
else:
250
if error is None:
251
logger.debug("Unknown state: %r", state)
252
else:
253
logger.debug("Unknown state: %r: %r", state, error)
218
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def activate(self):
219
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"""Derived from the Avahi example code"""
220
256
if self.server is None:
221
257
self.server = dbus.Interface(
222
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self.bus.get_object(avahi.DBUS_NAME,
223
avahi.DBUS_PATH_SERVER),
259
avahi.DBUS_PATH_SERVER,
260
follow_name_owner_changes=True),
224
261
avahi.DBUS_INTERFACE_SERVER)
225
self.server.connect_to_signal(u"StateChanged",
262
self.server.connect_to_signal("StateChanged",
226
263
self.server_state_changed)
227
264
self.server_state_changed(self.server.GetState())
228
265
231
268
"""A representation of a client host served by this server.
232
269
233
270
Attributes:
234
name: string; from the config file, used in log messages and
235
D-Bus identifiers
236
fingerprint: string (40 or 32 hexadecimal digits); used to
237
uniquely identify the client
238
secret: bytestring; sent verbatim (over TLS) to client
239
host: string; available for use by the checker command
240
created: datetime.datetime(); (UTC) object creation
241
last_enabled: datetime.datetime(); (UTC)
242
enabled: bool()
243
last_checked_ok: datetime.datetime(); (UTC) or None
244
timeout: datetime.timedelta(); How long from last_checked_ok
245
until this client is invalid
246
interval: datetime.timedelta(); How often to start a new checker
247
disable_hook: If set, called by disable() as disable_hook(self)
271
_approved: bool(); 'None' if not yet approved/disapproved
272
approval_delay: datetime.timedelta(); Time to wait for approval
273
approval_duration: datetime.timedelta(); Duration of one approval
248
274
checker: subprocess.Popen(); a running checker process used
249
275
to see if the client lives.
250
276
'None' if no process is running.
251
checker_initiator_tag: a gobject event source tag, or None
252
disable_initiator_tag: - '' -
253
checker_callback_tag: - '' -
254
checker_command: string; External command which is run to check if
255
client lives. %() expansions are done at
277
checker_callback_tag: a gobject event source tag, or None
278
checker_command: string; External command which is run to check
279
if client lives. %() expansions are done at
256
280
runtime with vars(self) as dict, so that for
257
281
instance %(name)s can be used in the command.
282
checker_initiator_tag: a gobject event source tag, or None
283
created: datetime.datetime(); (UTC) object creation
258
284
current_checker_command: string; current running checker_command
285
disable_hook: If set, called by disable() as disable_hook(self)
286
disable_initiator_tag: a gobject event source tag, or None
287
enabled: bool()
288
fingerprint: string (40 or 32 hexadecimal digits); used to
289
uniquely identify the client
290
host: string; available for use by the checker command
291
interval: datetime.timedelta(); How often to start a new checker
292
last_approval_request: datetime.datetime(); (UTC) or None
293
last_checked_ok: datetime.datetime(); (UTC) or None
294
last_enabled: datetime.datetime(); (UTC)
295
name: string; from the config file, used in log messages and
296
D-Bus identifiers
297
secret: bytestring; sent verbatim (over TLS) to client
298
timeout: datetime.timedelta(); How long from last_checked_ok
299
until this client is disabled
300
runtime_expansions: Allowed attributes for runtime expansion.
259
301
"""
260
302
303
runtime_expansions = ("approval_delay", "approval_duration",
304
"created", "enabled", "fingerprint",
305
"host", "interval", "last_checked_ok",
306
"last_enabled", "name", "timeout")
307
261
308
@staticmethod
262
309
def _timedelta_to_milliseconds(td):
263
310
"Convert a datetime.timedelta() to milliseconds"
272
319
def interval_milliseconds(self):
273
320
"Return the 'interval' attribute in milliseconds"
274
321
return self._timedelta_to_milliseconds(self.interval)
322
323
def approval_delay_milliseconds(self):
324
return self._timedelta_to_milliseconds(self.approval_delay)
275
325
276
326
def __init__(self, name = None, disable_hook=None, config=None):
277
327
"""Note: the 'checker' key in 'config' sets the
280
330
self.name = name
281
331
if config is None:
282
332
config = {}
283
logger.debug(u"Creating client %r", self.name)
333
logger.debug("Creating client %r", self.name)
284
334
# Uppercase and remove spaces from fingerprint for later
285
335
# comparison purposes with return value from the fingerprint()
286
336
# function
287
self.fingerprint = (config[u"fingerprint"].upper()
288
.replace(u" ", u""))
289
logger.debug(u" Fingerprint: %s", self.fingerprint)
290
if u"secret" in config:
291
self.secret = config[u"secret"].decode(u"base64")
292
elif u"secfile" in config:
293
with closing(open(os.path.expanduser
294
(os.path.expandvars
295
(config[u"secfile"])))) as secfile:
337
self.fingerprint = (config["fingerprint"].upper()
338
.replace(" ", ""))
339
logger.debug(" Fingerprint: %s", self.fingerprint)
340
if "secret" in config:
341
self.secret = config["secret"].decode("base64")
342
elif "secfile" in config:
343
with open(os.path.expanduser(os.path.expandvars
344
(config["secfile"])),
345
"rb") as secfile:
296
346
self.secret = secfile.read()
297
347
else:
298
raise TypeError(u"No secret or secfile for client %s"
348
raise TypeError("No secret or secfile for client %s"
299
349
% self.name)
300
self.host = config.get(u"host", u"")
350
self.host = config.get("host", "")
301
351
self.created = datetime.datetime.utcnow()
302
352
self.enabled = False
353
self.last_approval_request = None
303
354
self.last_enabled = None
304
355
self.last_checked_ok = None
305
self.timeout = string_to_delta(config[u"timeout"])
306
self.interval = string_to_delta(config[u"interval"])
356
self.timeout = string_to_delta(config["timeout"])
357
self.interval = string_to_delta(config["interval"])
307
358
self.disable_hook = disable_hook
308
359
self.checker = None
309
360
self.checker_initiator_tag = None
310
361
self.disable_initiator_tag = None
311
362
self.checker_callback_tag = None
312
self.checker_command = config[u"checker"]
363
self.checker_command = config["checker"]
313
364
self.current_checker_command = None
314
365
self.last_connect = None
366
self._approved = None
367
self.approved_by_default = config.get("approved_by_default",
368
True)
369
self.approvals_pending = 0
370
self.approval_delay = string_to_delta(
371
config["approval_delay"])
372
self.approval_duration = string_to_delta(
373
config["approval_duration"])
374
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
315
375
376
def send_changedstate(self):
377
self.changedstate.acquire()
378
self.changedstate.notify_all()
379
self.changedstate.release()
380
316
381
def enable(self):
317
382
"""Start this client's checker and timeout hooks"""
318
if getattr(self, u"enabled", False):
383
if getattr(self, "enabled", False):
319
384
# Already enabled
320
385
return
386
self.send_changedstate()
321
387
self.last_enabled = datetime.datetime.utcnow()
322
388
# Schedule a new checker to be started an 'interval' from now,
323
389
# and every interval from then on.
324
390
self.checker_initiator_tag = (gobject.timeout_add
325
391
(self.interval_milliseconds(),
326
392
self.start_checker))
327
# Also start a new checker *right now*.
328
self.start_checker()
329
393
# Schedule a disable() when 'timeout' has passed
330
394
self.disable_initiator_tag = (gobject.timeout_add
331
395
(self.timeout_milliseconds(),
332
396
self.disable))
333
397
self.enabled = True
398
# Also start a new checker *right now*.
399
self.start_checker()
334
400
335
def disable(self):
401
def disable(self, quiet=True):
336
402
"""Disable this client."""
337
403
if not getattr(self, "enabled", False):
338
404
return False
339
logger.info(u"Disabling client %s", self.name)
340
if getattr(self, u"disable_initiator_tag", False):
405
if not quiet:
406
self.send_changedstate()
407
if not quiet:
408
logger.info("Disabling client %s", self.name)
409
if getattr(self, "disable_initiator_tag", False):
341
410
gobject.source_remove(self.disable_initiator_tag)
342
411
self.disable_initiator_tag = None
343
if getattr(self, u"checker_initiator_tag", False):
412
if getattr(self, "checker_initiator_tag", False):
344
413
gobject.source_remove(self.checker_initiator_tag)
345
414
self.checker_initiator_tag = None
346
415
self.stop_checker()
361
430
if os.WIFEXITED(condition):
362
431
exitstatus = os.WEXITSTATUS(condition)
363
432
if exitstatus == 0:
364
logger.info(u"Checker for %(name)s succeeded",
433
logger.info("Checker for %(name)s succeeded",
365
434
vars(self))
366
435
self.checked_ok()
367
436
else:
368
logger.info(u"Checker for %(name)s failed",
437
logger.info("Checker for %(name)s failed",
369
438
vars(self))
370
439
else:
371
logger.warning(u"Checker for %(name)s crashed?",
440
logger.warning("Checker for %(name)s crashed?",
372
441
vars(self))
373
442
374
443
def checked_ok(self):
383
452
(self.timeout_milliseconds(),
384
453
self.disable))
385
454
455
def need_approval(self):
456
self.last_approval_request = datetime.datetime.utcnow()
457
386
458
def start_checker(self):
387
459
"""Start a new checker subprocess if one is not running.
388
460
394
466
# client would inevitably timeout, since no checker would get
395
467
# a chance to run to completion. If we instead leave running
396
468
# checkers alone, the checker would have to take more time
397
# than 'timeout' for the client to be declared invalid, which
398
# is as it should be.
469
# than 'timeout' for the client to be disabled, which is as it
470
# should be.
399
471
400
472
# If a checker exists, make sure it is not a zombie
401
if self.checker is not None:
473
try:
402
474
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
475
except (AttributeError, OSError) as error:
476
if (isinstance(error, OSError)
477
and error.errno != errno.ECHILD):
478
raise error
479
else:
403
480
if pid:
404
logger.warning(u"Checker was a zombie")
481
logger.warning("Checker was a zombie")
405
482
gobject.source_remove(self.checker_callback_tag)
406
483
self.checker_callback(pid, status,
407
484
self.current_checker_command)
412
489
command = self.checker_command % self.host
413
490
except TypeError:
414
491
# Escape attributes for the shell
415
escaped_attrs = dict((key,
416
re.escape(unicode(str(val),
417
errors=
418
u'replace')))
419
for key, val in
420
vars(self).iteritems())
492
escaped_attrs = dict(
493
(attr,
494
re.escape(unicode(str(getattr(self, attr, "")),
495
errors=
496
'replace')))
497
for attr in
498
self.runtime_expansions)
499
421
500
try:
422
501
command = self.checker_command % escaped_attrs
423
except TypeError, error:
424
logger.error(u'Could not format string "%s":'
425
u' %s', self.checker_command, error)
502
except TypeError as error:
503
logger.error('Could not format string "%s":'
504
' %s', self.checker_command, error)
426
505
return True # Try again later
427
506
self.current_checker_command = command
428
507
try:
429
logger.info(u"Starting checker %r for %s",
508
logger.info("Starting checker %r for %s",
430
509
command, self.name)
431
510
# We don't need to redirect stdout and stderr, since
432
511
# in normal mode, that is already done by daemon(),
434
513
# always replaced by /dev/null.)
435
514
self.checker = subprocess.Popen(command,
436
515
close_fds=True,
437
shell=True, cwd=u"/")
516
shell=True, cwd="/")
438
517
self.checker_callback_tag = (gobject.child_watch_add
439
518
(self.checker.pid,
440
519
self.checker_callback,
445
524
if pid:
446
525
gobject.source_remove(self.checker_callback_tag)
447
526
self.checker_callback(pid, status, command)
448
except OSError, error:
449
logger.error(u"Failed to start subprocess: %s",
527
except OSError as error:
528
logger.error("Failed to start subprocess: %s",
450
529
error)
451
530
# Re-run this periodically if run by gobject.timeout_add
452
531
return True
456
535
if self.checker_callback_tag:
457
536
gobject.source_remove(self.checker_callback_tag)
458
537
self.checker_callback_tag = None
459
if getattr(self, u"checker", None) is None:
538
if getattr(self, "checker", None) is None:
460
539
return
461
logger.debug(u"Stopping checker for %(name)s", vars(self))
540
logger.debug("Stopping checker for %(name)s", vars(self))
462
541
try:
463
542
os.kill(self.checker.pid, signal.SIGTERM)
464
#os.sleep(0.5)
543
#time.sleep(0.5)
465
544
#if self.checker.poll() is None:
466
545
# os.kill(self.checker.pid, signal.SIGKILL)
467
except OSError, error:
546
except OSError as error:
468
547
if error.errno != errno.ESRCH: # No such process
469
548
raise
470
549
self.checker = None
471
472
def still_valid(self):
473
"""Has the timeout not yet passed for this client?"""
474
if not getattr(self, u"enabled", False):
475
return False
476
now = datetime.datetime.utcnow()
477
if self.last_checked_ok is None:
478
return now < (self.created + self.timeout)
479
else:
480
return now < (self.last_checked_ok + self.timeout)
481
482
483
def dbus_service_property(dbus_interface, signature=u"v",
484
access=u"readwrite", byte_arrays=False):
550
551
def dbus_service_property(dbus_interface, signature="v",
552
access="readwrite", byte_arrays=False):
485
553
"""Decorators for marking methods of a DBusObjectWithProperties to
486
554
become properties on the D-Bus.
487
555
492
560
dbus.service.method, except there is only "signature", since the
493
561
type from Get() and the type sent to Set() is the same.
494
562
"""
563
# Encoding deeply encoded byte arrays is not supported yet by the
564
# "Set" method, so we fail early here:
565
if byte_arrays and signature != "ay":
566
raise ValueError("Byte arrays not supported for non-'ay'"
567
" signature %r" % signature)
495
568
def decorator(func):
496
569
func._dbus_is_property = True
497
570
func._dbus_interface = dbus_interface
498
571
func._dbus_signature = signature
499
572
func._dbus_access = access
500
573
func._dbus_name = func.__name__
501
if func._dbus_name.endswith(u"_dbus_property"):
574
if func._dbus_name.endswith("_dbus_property"):
502
575
func._dbus_name = func._dbus_name[:-14]
503
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
576
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
504
577
return func
505
578
return decorator
506
579
534
607
535
608
@staticmethod
536
609
def _is_dbus_property(obj):
537
return getattr(obj, u"_dbus_is_property", False)
610
return getattr(obj, "_dbus_is_property", False)
538
611
539
612
def _get_all_dbus_properties(self):
540
613
"""Returns a generator of (name, attribute) pairs
548
621
property with the specified name and interface.
549
622
"""
550
623
for name in (property_name,
551
property_name + u"_dbus_property"):
624
property_name + "_dbus_property"):
552
625
prop = getattr(self, name, None)
553
626
if (prop is None
554
627
or not self._is_dbus_property(prop)
558
631
continue
559
632
return prop
560
633
# No such property
561
raise DBusPropertyNotFound(self.dbus_object_path + u":"
562
+ interface_name + u"."
634
raise DBusPropertyNotFound(self.dbus_object_path + ":"
635
+ interface_name + "."
563
636
+ property_name)
564
637
565
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
566
out_signature=u"v")
638
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
639
out_signature="v")
567
640
def Get(self, interface_name, property_name):
568
641
"""Standard D-Bus property Get() method, see D-Bus standard.
569
642
"""
570
643
prop = self._get_dbus_property(interface_name, property_name)
571
if prop._dbus_access == u"write":
644
if prop._dbus_access == "write":
572
645
raise DBusPropertyAccessException(property_name)
573
646
value = prop()
574
if not hasattr(value, u"variant_level"):
647
if not hasattr(value, "variant_level"):
575
648
return value
576
649
return type(value)(value, variant_level=value.variant_level+1)
577
650
578
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
651
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
579
652
def Set(self, interface_name, property_name, value):
580
653
"""Standard D-Bus property Set() method, see D-Bus standard.
581
654
"""
582
655
prop = self._get_dbus_property(interface_name, property_name)
583
if prop._dbus_access == u"read":
656
if prop._dbus_access == "read":
584
657
raise DBusPropertyAccessException(property_name)
585
if prop._dbus_get_args_options[u"byte_arrays"]:
658
if prop._dbus_get_args_options["byte_arrays"]:
659
# The byte_arrays option is not supported yet on
660
# signatures other than "ay".
661
if prop._dbus_signature != "ay":
662
raise ValueError
586
663
value = dbus.ByteArray(''.join(unichr(byte)
587
664
for byte in value))
588
665
prop(value)
589
666
590
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
591
out_signature=u"a{sv}")
667
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
668
out_signature="a{sv}")
592
669
def GetAll(self, interface_name):
593
670
"""Standard D-Bus property GetAll() method, see D-Bus
594
671
standard.
602
679
# Interface non-empty but did not match
603
680
continue
604
681
# Ignore write-only properties
605
if prop._dbus_access == u"write":
682
if prop._dbus_access == "write":
606
683
continue
607
684
value = prop()
608
if not hasattr(value, u"variant_level"):
685
if not hasattr(value, "variant_level"):
609
686
all[name] = value
610
687
continue
611
688
all[name] = type(value)(value, variant_level=
612
689
value.variant_level+1)
613
return dbus.Dictionary(all, signature=u"sv")
690
return dbus.Dictionary(all, signature="sv")
614
691
615
692
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
616
out_signature=u"s",
693
out_signature="s",
617
694
path_keyword='object_path',
618
695
connection_keyword='connection')
619
696
def Introspect(self, object_path, connection):
620
697
"""Standard D-Bus method, overloaded to insert property tags.
621
698
"""
622
699
xmlstring = dbus.service.Object.Introspect(self, object_path,
623
connection)
624
document = xml.dom.minidom.parseString(xmlstring)
625
del xmlstring
626
def make_tag(document, name, prop):
627
e = document.createElement(u"property")
628
e.setAttribute(u"name", name)
629
e.setAttribute(u"type", prop._dbus_signature)
630
e.setAttribute(u"access", prop._dbus_access)
631
return e
632
for if_tag in document.getElementsByTagName(u"interface"):
633
for tag in (make_tag(document, name, prop)
634
for name, prop
635
in self._get_all_dbus_properties()
636
if prop._dbus_interface
637
== if_tag.getAttribute(u"name")):
638
if_tag.appendChild(tag)
639
xmlstring = document.toxml(u"utf-8")
640
document.unlink()
700
connection)
701
try:
702
document = xml.dom.minidom.parseString(xmlstring)
703
def make_tag(document, name, prop):
704
e = document.createElement("property")
705
e.setAttribute("name", name)
706
e.setAttribute("type", prop._dbus_signature)
707
e.setAttribute("access", prop._dbus_access)
708
return e
709
for if_tag in document.getElementsByTagName("interface"):
710
for tag in (make_tag(document, name, prop)
711
for name, prop
712
in self._get_all_dbus_properties()
713
if prop._dbus_interface
714
== if_tag.getAttribute("name")):
715
if_tag.appendChild(tag)
716
# Add the names to the return values for the
717
# "org.freedesktop.DBus.Properties" methods
718
if (if_tag.getAttribute("name")
719
== "org.freedesktop.DBus.Properties"):
720
for cn in if_tag.getElementsByTagName("method"):
721
if cn.getAttribute("name") == "Get":
722
for arg in cn.getElementsByTagName("arg"):
723
if (arg.getAttribute("direction")
724
== "out"):
725
arg.setAttribute("name", "value")
726
elif cn.getAttribute("name") == "GetAll":
727
for arg in cn.getElementsByTagName("arg"):
728
if (arg.getAttribute("direction")
729
== "out"):
730
arg.setAttribute("name", "props")
731
xmlstring = document.toxml("utf-8")
732
document.unlink()
733
except (AttributeError, xml.dom.DOMException,
734
xml.parsers.expat.ExpatError) as error:
735
logger.error("Failed to override Introspection method",
736
error)
641
737
return xmlstring
642
738
643
739
648
744
dbus_object_path: dbus.ObjectPath
649
745
bus: dbus.SystemBus()
650
746
"""
747
748
runtime_expansions = (Client.runtime_expansions
749
+ ("dbus_object_path",))
750
651
751
# dbus.service.Object doesn't use super(), so we can't either.
652
752
653
753
def __init__(self, bus = None, *args, **kwargs):
754
self._approvals_pending = 0
654
755
self.bus = bus
655
756
Client.__init__(self, *args, **kwargs)
656
757
# Only now, when this client is initialized, can it show up on
657
758
# the D-Bus
759
client_object_name = unicode(self.name).translate(
760
{ord("."): ord("_"),
761
ord("-"): ord("_")})
658
762
self.dbus_object_path = (dbus.ObjectPath
659
(u"/clients/"
660
+ self.name.replace(u".", u"_")))
763
("/clients/" + client_object_name))
661
764
DBusObjectWithProperties.__init__(self, self.bus,
662
765
self.dbus_object_path)
766
767
def _get_approvals_pending(self):
768
return self._approvals_pending
769
def _set_approvals_pending(self, value):
770
old_value = self._approvals_pending
771
self._approvals_pending = value
772
bval = bool(value)
773
if (hasattr(self, "dbus_object_path")
774
and bval is not bool(old_value)):
775
dbus_bool = dbus.Boolean(bval, variant_level=1)
776
self.PropertyChanged(dbus.String("ApprovalPending"),
777
dbus_bool)
778
779
approvals_pending = property(_get_approvals_pending,
780
_set_approvals_pending)
781
del _get_approvals_pending, _set_approvals_pending
663
782
664
783
@staticmethod
665
784
def _datetime_to_dbus(dt, variant_level=0):
668
787
variant_level=variant_level)
669
788
670
789
def enable(self):
671
oldstate = getattr(self, u"enabled", False)
790
oldstate = getattr(self, "enabled", False)
672
791
r = Client.enable(self)
673
792
if oldstate != self.enabled:
674
793
# Emit D-Bus signals
675
self.PropertyChanged(dbus.String(u"enabled"),
794
self.PropertyChanged(dbus.String("Enabled"),
676
795
dbus.Boolean(True, variant_level=1))
677
796
self.PropertyChanged(
678
dbus.String(u"last_enabled"),
797
dbus.String("LastEnabled"),
679
798
self._datetime_to_dbus(self.last_enabled,
680
799
variant_level=1))
681
800
return r
682
801
683
def disable(self, signal = True):
684
oldstate = getattr(self, u"enabled", False)
685
r = Client.disable(self)
686
if signal and oldstate != self.enabled:
802
def disable(self, quiet = False):
803
oldstate = getattr(self, "enabled", False)
804
r = Client.disable(self, quiet=quiet)
805
if not quiet and oldstate != self.enabled:
687
806
# Emit D-Bus signal
688
self.PropertyChanged(dbus.String(u"enabled"),
807
self.PropertyChanged(dbus.String("Enabled"),
689
808
dbus.Boolean(False, variant_level=1))
690
809
return r
691
810
694
813
self.remove_from_connection()
695
814
except LookupError:
696
815
pass
697
if hasattr(DBusObjectWithProperties, u"__del__"):
816
if hasattr(DBusObjectWithProperties, "__del__"):
698
817
DBusObjectWithProperties.__del__(self, *args, **kwargs)
699
818
Client.__del__(self, *args, **kwargs)
700
819
703
822
self.checker_callback_tag = None
704
823
self.checker = None
705
824
# Emit D-Bus signal
706
self.PropertyChanged(dbus.String(u"checker_running"),
825
self.PropertyChanged(dbus.String("CheckerRunning"),
707
826
dbus.Boolean(False, variant_level=1))
708
827
if os.WIFEXITED(condition):
709
828
exitstatus = os.WEXITSTATUS(condition)
721
840
*args, **kwargs)
722
841
723
842
def checked_ok(self, *args, **kwargs):
724
r = Client.checked_ok(self, *args, **kwargs)
843
Client.checked_ok(self, *args, **kwargs)
725
844
# Emit D-Bus signal
726
845
self.PropertyChanged(
727
dbus.String(u"last_checked_ok"),
846
dbus.String("LastCheckedOK"),
728
847
(self._datetime_to_dbus(self.last_checked_ok,
729
848
variant_level=1)))
849
850
def need_approval(self, *args, **kwargs):
851
r = Client.need_approval(self, *args, **kwargs)
852
# Emit D-Bus signal
853
self.PropertyChanged(
854
dbus.String("LastApprovalRequest"),
855
(self._datetime_to_dbus(self.last_approval_request,
856
variant_level=1)))
730
857
return r
731
858
732
859
def start_checker(self, *args, **kwargs):
742
869
# Emit D-Bus signal
743
870
self.CheckerStarted(self.current_checker_command)
744
871
self.PropertyChanged(
745
dbus.String(u"checker_running"),
872
dbus.String("CheckerRunning"),
746
873
dbus.Boolean(True, variant_level=1))
747
874
return r
748
875
749
876
def stop_checker(self, *args, **kwargs):
750
old_checker = getattr(self, u"checker", None)
877
old_checker = getattr(self, "checker", None)
751
878
r = Client.stop_checker(self, *args, **kwargs)
752
879
if (old_checker is not None
753
and getattr(self, u"checker", None) is None):
754
self.PropertyChanged(dbus.String(u"checker_running"),
880
and getattr(self, "checker", None) is None):
881
self.PropertyChanged(dbus.String("CheckerRunning"),
755
882
dbus.Boolean(False, variant_level=1))
756
883
return r
757
758
## D-Bus methods & signals
759
_interface = u"se.bsnet.fukt.Mandos.Client"
884
885
def _reset_approved(self):
886
self._approved = None
887
return False
888
889
def approve(self, value=True):
890
self.send_changedstate()
891
self._approved = value
892
gobject.timeout_add(self._timedelta_to_milliseconds
893
(self.approval_duration),
894
self._reset_approved)
895
896
897
## D-Bus methods, signals & properties
898
_interface = "se.bsnet.fukt.Mandos.Client"
899
900
## Signals
760
901
761
902
# CheckerCompleted - signal
762
@dbus.service.signal(_interface, signature=u"nxs")
903
@dbus.service.signal(_interface, signature="nxs")
763
904
def CheckerCompleted(self, exitcode, waitstatus, command):
764
905
"D-Bus signal"
765
906
pass
766
907
767
908
# CheckerStarted - signal
768
@dbus.service.signal(_interface, signature=u"s")
909
@dbus.service.signal(_interface, signature="s")
769
910
def CheckerStarted(self, command):
770
911
"D-Bus signal"
771
912
pass
772
913
773
914
# PropertyChanged - signal
774
@dbus.service.signal(_interface, signature=u"sv")
915
@dbus.service.signal(_interface, signature="sv")
775
916
def PropertyChanged(self, property, value):
776
917
"D-Bus signal"
777
918
pass
778
919
779
# ReceivedSecret - signal
920
# GotSecret - signal
780
921
@dbus.service.signal(_interface)
781
def ReceivedSecret(self):
782
"D-Bus signal"
922
def GotSecret(self):
923
"""D-Bus signal
924
Is sent after a successful transfer of secret from the Mandos
925
server to mandos-client
926
"""
783
927
pass
784
928
785
929
# Rejected - signal
786
@dbus.service.signal(_interface)
787
def Rejected(self):
930
@dbus.service.signal(_interface, signature="s")
931
def Rejected(self, reason):
788
932
"D-Bus signal"
789
933
pass
790
934
791
# name - property
792
@dbus_service_property(_interface, signature=u"s", access=u"read")
793
def name_dbus_property(self):
935
# NeedApproval - signal
936
@dbus.service.signal(_interface, signature="tb")
937
def NeedApproval(self, timeout, default):
938
"D-Bus signal"
939
return self.need_approval()
940
941
## Methods
942
943
# Approve - method
944
@dbus.service.method(_interface, in_signature="b")
945
def Approve(self, value):
946
self.approve(value)
947
948
# CheckedOK - method
949
@dbus.service.method(_interface)
950
def CheckedOK(self):
951
self.checked_ok()
952
953
# Enable - method
954
@dbus.service.method(_interface)
955
def Enable(self):
956
"D-Bus method"
957
self.enable()
958
959
# StartChecker - method
960
@dbus.service.method(_interface)
961
def StartChecker(self):
962
"D-Bus method"
963
self.start_checker()
964
965
# Disable - method
966
@dbus.service.method(_interface)
967
def Disable(self):
968
"D-Bus method"
969
self.disable()
970
971
# StopChecker - method
972
@dbus.service.method(_interface)
973
def StopChecker(self):
974
self.stop_checker()
975
976
## Properties
977
978
# ApprovalPending - property
979
@dbus_service_property(_interface, signature="b", access="read")
980
def ApprovalPending_dbus_property(self):
981
return dbus.Boolean(bool(self.approvals_pending))
982
983
# ApprovedByDefault - property
984
@dbus_service_property(_interface, signature="b",
985
access="readwrite")
986
def ApprovedByDefault_dbus_property(self, value=None):
987
if value is None: # get
988
return dbus.Boolean(self.approved_by_default)
989
self.approved_by_default = bool(value)
990
# Emit D-Bus signal
991
self.PropertyChanged(dbus.String("ApprovedByDefault"),
992
dbus.Boolean(value, variant_level=1))
993
994
# ApprovalDelay - property
995
@dbus_service_property(_interface, signature="t",
996
access="readwrite")
997
def ApprovalDelay_dbus_property(self, value=None):
998
if value is None: # get
999
return dbus.UInt64(self.approval_delay_milliseconds())
1000
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1001
# Emit D-Bus signal
1002
self.PropertyChanged(dbus.String("ApprovalDelay"),
1003
dbus.UInt64(value, variant_level=1))
1004
1005
# ApprovalDuration - property
1006
@dbus_service_property(_interface, signature="t",
1007
access="readwrite")
1008
def ApprovalDuration_dbus_property(self, value=None):
1009
if value is None: # get
1010
return dbus.UInt64(self._timedelta_to_milliseconds(
1011
self.approval_duration))
1012
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1013
# Emit D-Bus signal
1014
self.PropertyChanged(dbus.String("ApprovalDuration"),
1015
dbus.UInt64(value, variant_level=1))
1016
1017
# Name - property
1018
@dbus_service_property(_interface, signature="s", access="read")
1019
def Name_dbus_property(self):
794
1020
return dbus.String(self.name)
795
1021
796
# fingerprint - property
797
@dbus_service_property(_interface, signature=u"s", access=u"read")
798
def fingerprint_dbus_property(self):
1022
# Fingerprint - property
1023
@dbus_service_property(_interface, signature="s", access="read")
1024
def Fingerprint_dbus_property(self):
799
1025
return dbus.String(self.fingerprint)
800
1026
801
# host - property
802
@dbus_service_property(_interface, signature=u"s",
803
access=u"readwrite")
804
def host_dbus_property(self, value=None):
1027
# Host - property
1028
@dbus_service_property(_interface, signature="s",
1029
access="readwrite")
1030
def Host_dbus_property(self, value=None):
805
1031
if value is None: # get
806
1032
return dbus.String(self.host)
807
1033
self.host = value
808
1034
# Emit D-Bus signal
809
self.PropertyChanged(dbus.String(u"host"),
1035
self.PropertyChanged(dbus.String("Host"),
810
1036
dbus.String(value, variant_level=1))
811
1037
812
# created - property
813
@dbus_service_property(_interface, signature=u"s", access=u"read")
814
def created_dbus_property(self):
1038
# Created - property
1039
@dbus_service_property(_interface, signature="s", access="read")
1040
def Created_dbus_property(self):
815
1041
return dbus.String(self._datetime_to_dbus(self.created))
816
1042
817
# last_enabled - property
818
@dbus_service_property(_interface, signature=u"s", access=u"read")
819
def last_enabled_dbus_property(self):
1043
# LastEnabled - property
1044
@dbus_service_property(_interface, signature="s", access="read")
1045
def LastEnabled_dbus_property(self):
820
1046
if self.last_enabled is None:
821
return dbus.String(u"")
1047
return dbus.String("")
822
1048
return dbus.String(self._datetime_to_dbus(self.last_enabled))
823
1049
824
# enabled - property
825
@dbus_service_property(_interface, signature=u"b",
826
access=u"readwrite")
827
def enabled_dbus_property(self, value=None):
1050
# Enabled - property
1051
@dbus_service_property(_interface, signature="b",
1052
access="readwrite")
1053
def Enabled_dbus_property(self, value=None):
828
1054
if value is None: # get
829
1055
return dbus.Boolean(self.enabled)
830
1056
if value:
832
1058
else:
833
1059
self.disable()
834
1060
835
# last_checked_ok - property
836
@dbus_service_property(_interface, signature=u"s", access=u"read")
837
def last_checked_ok_dbus_property(self):
1061
# LastCheckedOK - property
1062
@dbus_service_property(_interface, signature="s",
1063
access="readwrite")
1064
def LastCheckedOK_dbus_property(self, value=None):
1065
if value is not None:
1066
self.checked_ok()
1067
return
838
1068
if self.last_checked_ok is None:
839
return dbus.String(u"")
1069
return dbus.String("")
840
1070
return dbus.String(self._datetime_to_dbus(self
841
1071
.last_checked_ok))
842
1072
843
# timeout - property
844
@dbus_service_property(_interface, signature=u"t",
845
access=u"readwrite")
846
def timeout_dbus_property(self, value=None):
1073
# LastApprovalRequest - property
1074
@dbus_service_property(_interface, signature="s", access="read")
1075
def LastApprovalRequest_dbus_property(self):
1076
if self.last_approval_request is None:
1077
return dbus.String("")
1078
return dbus.String(self.
1079
_datetime_to_dbus(self
1080
.last_approval_request))
1081
1082
# Timeout - property
1083
@dbus_service_property(_interface, signature="t",
1084
access="readwrite")
1085
def Timeout_dbus_property(self, value=None):
847
1086
if value is None: # get
848
1087
return dbus.UInt64(self.timeout_milliseconds())
849
1088
self.timeout = datetime.timedelta(0, 0, 0, value)
850
1089
# Emit D-Bus signal
851
self.PropertyChanged(dbus.String(u"timeout"),
1090
self.PropertyChanged(dbus.String("Timeout"),
852
1091
dbus.UInt64(value, variant_level=1))
853
if getattr(self, u"disable_initiator_tag", None) is None:
1092
if getattr(self, "disable_initiator_tag", None) is None:
854
1093
return
855
1094
# Reschedule timeout
856
1095
gobject.source_remove(self.disable_initiator_tag)
868
1107
self.disable_initiator_tag = (gobject.timeout_add
869
1108
(time_to_die, self.disable))
870
1109
871
# interval - property
872
@dbus_service_property(_interface, signature=u"t",
873
access=u"readwrite")
874
def interval_dbus_property(self, value=None):
1110
# Interval - property
1111
@dbus_service_property(_interface, signature="t",
1112
access="readwrite")
1113
def Interval_dbus_property(self, value=None):
875
1114
if value is None: # get
876
1115
return dbus.UInt64(self.interval_milliseconds())
877
1116
self.interval = datetime.timedelta(0, 0, 0, value)
878
1117
# Emit D-Bus signal
879
self.PropertyChanged(dbus.String(u"interval"),
1118
self.PropertyChanged(dbus.String("Interval"),
880
1119
dbus.UInt64(value, variant_level=1))
881
if getattr(self, u"checker_initiator_tag", None) is None:
1120
if getattr(self, "checker_initiator_tag", None) is None:
882
1121
return
883
1122
# Reschedule checker run
884
1123
gobject.source_remove(self.checker_initiator_tag)
886
1125
(value, self.start_checker))
887
1126
self.start_checker() # Start one now, too
888
1127
889
# checker - property
890
@dbus_service_property(_interface, signature=u"s",
891
access=u"readwrite")
892
def checker_dbus_property(self, value=None):
1128
# Checker - property
1129
@dbus_service_property(_interface, signature="s",
1130
access="readwrite")
1131
def Checker_dbus_property(self, value=None):
893
1132
if value is None: # get
894
1133
return dbus.String(self.checker_command)
895
1134
self.checker_command = value
896
1135
# Emit D-Bus signal
897
self.PropertyChanged(dbus.String(u"checker"),
1136
self.PropertyChanged(dbus.String("Checker"),
898
1137
dbus.String(self.checker_command,
899
1138
variant_level=1))
900
1139
901
# checker_running - property
902
@dbus_service_property(_interface, signature=u"b",
903
access=u"readwrite")
904
def checker_running_dbus_property(self, value=None):
1140
# CheckerRunning - property
1141
@dbus_service_property(_interface, signature="b",
1142
access="readwrite")
1143
def CheckerRunning_dbus_property(self, value=None):
905
1144
if value is None: # get
906
1145
return dbus.Boolean(self.checker is not None)
907
1146
if value:
909
1148
else:
910
1149
self.stop_checker()
911
1150
912
# object_path - property
913
@dbus_service_property(_interface, signature=u"o", access=u"read")
914
def object_path_dbus_property(self):
1151
# ObjectPath - property
1152
@dbus_service_property(_interface, signature="o", access="read")
1153
def ObjectPath_dbus_property(self):
915
1154
return self.dbus_object_path # is already a dbus.ObjectPath
916
1155
917
# secret = property xxx
918
@dbus_service_property(_interface, signature=u"ay",
919
access=u"write", byte_arrays=True)
920
def secret_dbus_property(self, value):
1156
# Secret = property
1157
@dbus_service_property(_interface, signature="ay",
1158
access="write", byte_arrays=True)
1159
def Secret_dbus_property(self, value):
921
1160
self.secret = str(value)
922
1161
923
1162
del _interface
924
1163
925
1164
1165
class ProxyClient(object):
1166
def __init__(self, child_pipe, fpr, address):
1167
self._pipe = child_pipe
1168
self._pipe.send(('init', fpr, address))
1169
if not self._pipe.recv():
1170
raise KeyError()
1171
1172
def __getattribute__(self, name):
1173
if(name == '_pipe'):
1174
return super(ProxyClient, self).__getattribute__(name)
1175
self._pipe.send(('getattr', name))
1176
data = self._pipe.recv()
1177
if data[0] == 'data':
1178
return data[1]
1179
if data[0] == 'function':
1180
def func(*args, **kwargs):
1181
self._pipe.send(('funcall', name, args, kwargs))
1182
return self._pipe.recv()[1]
1183
return func
1184
1185
def __setattr__(self, name, value):
1186
if(name == '_pipe'):
1187
return super(ProxyClient, self).__setattr__(name, value)
1188
self._pipe.send(('setattr', name, value))
1189
1190
926
1191
class ClientHandler(socketserver.BaseRequestHandler, object):
927
1192
"""A class to handle client connections.
928
1193
930
1195
Note: This will run in its own forked process."""
931
1196
932
1197
def handle(self):
933
logger.info(u"TCP connection from: %s",
934
unicode(self.client_address))
935
logger.debug(u"IPC Pipe FD: %d", self.server.pipe[1])
936
# Open IPC pipe to parent process
937
with closing(os.fdopen(self.server.pipe[1], u"w", 1)) as ipc:
1198
with contextlib.closing(self.server.child_pipe) as child_pipe:
1199
logger.info("TCP connection from: %s",
1200
unicode(self.client_address))
1201
logger.debug("Pipe FD: %d",
1202
self.server.child_pipe.fileno())
1203
938
1204
session = (gnutls.connection
939
1205
.ClientSession(self.request,
940
1206
gnutls.connection
941
1207
.X509Credentials()))
942
943
line = self.request.makefile().readline()
944
logger.debug(u"Protocol version: %r", line)
945
try:
946
if int(line.strip().split()[0]) > 1:
947
raise RuntimeError
948
except (ValueError, IndexError, RuntimeError), error:
949
logger.error(u"Unknown protocol version: %s", error)
950
return
951
1208
952
1209
# Note: gnutls.connection.X509Credentials is really a
953
1210
# generic GnuTLS certificate credentials object so long as
954
1211
# no X.509 keys are added to it. Therefore, we can use it
955
1212
# here despite using OpenPGP certificates.
956
957
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
958
# u"+AES-256-CBC", u"+SHA1",
959
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
960
# u"+DHE-DSS"))
1213
1214
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1215
# "+AES-256-CBC", "+SHA1",
1216
# "+COMP-NULL", "+CTYPE-OPENPGP",
1217
# "+DHE-DSS"))
961
1218
# Use a fallback default, since this MUST be set.
962
1219
priority = self.server.gnutls_priority
963
1220
if priority is None:
964
priority = u"NORMAL"
1221
priority = "NORMAL"
965
1222
(gnutls.library.functions
966
1223
.gnutls_priority_set_direct(session._c_object,
967
1224
priority, None))
968
1225
1226
# Start communication using the Mandos protocol
1227
# Get protocol number
1228
line = self.request.makefile().readline()
1229
logger.debug("Protocol version: %r", line)
1230
try:
1231
if int(line.strip().split()[0]) > 1:
1232
raise RuntimeError
1233
except (ValueError, IndexError, RuntimeError) as error:
1234
logger.error("Unknown protocol version: %s", error)
1235
return
1236
1237
# Start GnuTLS connection
969
1238
try:
970
1239
session.handshake()
971
except gnutls.errors.GNUTLSError, error:
972
logger.warning(u"Handshake failed: %s", error)
1240
except gnutls.errors.GNUTLSError as error:
1241
logger.warning("Handshake failed: %s", error)
973
1242
# Do not run session.bye() here: the session is not
974
1243
# established. Just abandon the request.
975
1244
return
976
logger.debug(u"Handshake succeeded")
1245
logger.debug("Handshake succeeded")
1246
1247
approval_required = False
977
1248
try:
978
fpr = self.fingerprint(self.peer_certificate(session))
979
except (TypeError, gnutls.errors.GNUTLSError), error:
980
logger.warning(u"Bad certificate: %s", error)
981
session.bye()
982
return
983
logger.debug(u"Fingerprint: %s", fpr)
1249
try:
1250
fpr = self.fingerprint(self.peer_certificate
1251
(session))
1252
except (TypeError,
1253
gnutls.errors.GNUTLSError) as error:
1254
logger.warning("Bad certificate: %s", error)
1255
return
1256
logger.debug("Fingerprint: %s", fpr)
1257
1258
try:
1259
client = ProxyClient(child_pipe, fpr,
1260
self.client_address)
1261
except KeyError:
1262
return
1263
1264
if client.approval_delay:
1265
delay = client.approval_delay
1266
client.approvals_pending += 1
1267
approval_required = True
1268
1269
while True:
1270
if not client.enabled:
1271
logger.info("Client %s is disabled",
1272
client.name)
1273
if self.server.use_dbus:
1274
# Emit D-Bus signal
1275
client.Rejected("Disabled")
1276
return
1277
1278
if client._approved or not client.approval_delay:
1279
#We are approved or approval is disabled
1280
break
1281
elif client._approved is None:
1282
logger.info("Client %s needs approval",
1283
client.name)
1284
if self.server.use_dbus:
1285
# Emit D-Bus signal
1286
client.NeedApproval(
1287
client.approval_delay_milliseconds(),
1288
client.approved_by_default)
1289
else:
1290
logger.warning("Client %s was not approved",
1291
client.name)
1292
if self.server.use_dbus:
1293
# Emit D-Bus signal
1294
client.Rejected("Denied")
1295
return
1296
1297
#wait until timeout or approved
1298
#x = float(client._timedelta_to_milliseconds(delay))
1299
time = datetime.datetime.now()
1300
client.changedstate.acquire()
1301
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
1302
client.changedstate.release()
1303
time2 = datetime.datetime.now()
1304
if (time2 - time) >= delay:
1305
if not client.approved_by_default:
1306
logger.warning("Client %s timed out while"
1307
" waiting for approval",
1308
client.name)
1309
if self.server.use_dbus:
1310
# Emit D-Bus signal
1311
client.Rejected("Approval timed out")
1312
return
1313
else:
1314
break
1315
else:
1316
delay -= time2 - time
1317
1318
sent_size = 0
1319
while sent_size < len(client.secret):
1320
try:
1321
sent = session.send(client.secret[sent_size:])
1322
except gnutls.errors.GNUTLSError as error:
1323
logger.warning("gnutls send failed")
1324
return
1325
logger.debug("Sent: %d, remaining: %d",
1326
sent, len(client.secret)
1327
- (sent_size + sent))
1328
sent_size += sent
1329
1330
logger.info("Sending secret to %s", client.name)
1331
# bump the timeout as if seen
1332
client.checked_ok()
1333
if self.server.use_dbus:
1334
# Emit D-Bus signal
1335
client.GotSecret()
984
1336
985
for c in self.server.clients:
986
if c.fingerprint == fpr:
987
client = c
988
break
989
else:
990
ipc.write(u"NOTFOUND %s %s\n"
991
% (fpr, unicode(self.client_address)))
992
session.bye()
993
return
994
# Have to check if client.still_valid(), since it is
995
# possible that the client timed out while establishing
996
# the GnuTLS session.
997
if not client.still_valid():
998
ipc.write(u"INVALID %s\n" % client.name)
999
session.bye()
1000
return
1001
ipc.write(u"SENDING %s\n" % client.name)
1002
sent_size = 0
1003
while sent_size < len(client.secret):
1004
sent = session.send(client.secret[sent_size:])
1005
logger.debug(u"Sent: %d, remaining: %d",
1006
sent, len(client.secret)
1007
- (sent_size + sent))
1008
sent_size += sent
1009
session.bye()
1337
finally:
1338
if approval_required:
1339
client.approvals_pending -= 1
1340
try:
1341
session.bye()
1342
except gnutls.errors.GNUTLSError as error:
1343
logger.warning("GnuTLS bye failed")
1010
1344
1011
1345
@staticmethod
1012
1346
def peer_certificate(session):
1022
1356
.gnutls_certificate_get_peers
1023
1357
(session._c_object, ctypes.byref(list_size)))
1024
1358
if not bool(cert_list) and list_size.value != 0:
1025
raise gnutls.errors.GNUTLSError(u"error getting peer"
1026
u" certificate")
1359
raise gnutls.errors.GNUTLSError("error getting peer"
1360
" certificate")
1027
1361
if list_size.value == 0:
1028
1362
return None
1029
1363
cert = cert_list[0]
1055
1389
if crtverify.value != 0:
1056
1390
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1057
1391
raise (gnutls.errors.CertificateSecurityError
1058
(u"Verify failed"))
1392
("Verify failed"))
1059
1393
# New buffer for the fingerprint
1060
1394
buf = ctypes.create_string_buffer(20)
1061
1395
buf_len = ctypes.c_size_t()
1068
1402
# Convert the buffer to a Python bytestring
1069
1403
fpr = ctypes.string_at(buf, buf_len.value)
1070
1404
# Convert the bytestring to hexadecimal notation
1071
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1405
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
1072
1406
return hex_fpr
1073
1407
1074
1408
1075
class ForkingMixInWithPipe(socketserver.ForkingMixIn, object):
1076
"""Like socketserver.ForkingMixIn, but also pass a pipe."""
1409
class MultiprocessingMixIn(object):
1410
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
1411
def sub_process_main(self, request, address):
1412
try:
1413
self.finish_request(request, address)
1414
except:
1415
self.handle_error(request, address)
1416
self.close_request(request)
1417
1418
def process_request(self, request, address):
1419
"""Start a new process to process the request."""
1420
multiprocessing.Process(target = self.sub_process_main,
1421
args = (request, address)).start()
1422
1423
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1424
""" adds a pipe to the MixIn """
1077
1425
def process_request(self, request, client_address):
1078
1426
"""Overrides and wraps the original process_request().
1079
1427
1080
1428
This function creates a new pipe in self.pipe
1081
1429
"""
1082
self.pipe = os.pipe()
1083
super(ForkingMixInWithPipe,
1430
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1431
1432
super(MultiprocessingMixInWithPipe,
1084
1433
self).process_request(request, client_address)
1085
os.close(self.pipe[1]) # close write end
1086
self.add_pipe(self.pipe[0])
1087
def add_pipe(self, pipe):
1434
self.child_pipe.close()
1435
self.add_pipe(parent_pipe)
1436
1437
def add_pipe(self, parent_pipe):
1088
1438
"""Dummy function; override as necessary"""
1089
os.close(pipe)
1090
1091
1092
class IPv6_TCPServer(ForkingMixInWithPipe,
1439
raise NotImplementedError
1440
1441
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1093
1442
socketserver.TCPServer, object):
1094
1443
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1095
1444
1111
1460
bind to an address or port if they were not specified."""
1112
1461
if self.interface is not None:
1113
1462
if SO_BINDTODEVICE is None:
1114
logger.error(u"SO_BINDTODEVICE does not exist;"
1115
u" cannot bind to interface %s",
1463
logger.error("SO_BINDTODEVICE does not exist;"
1464
" cannot bind to interface %s",
1116
1465
self.interface)
1117
1466
else:
1118
1467
try:
1119
1468
self.socket.setsockopt(socket.SOL_SOCKET,
1120
1469
SO_BINDTODEVICE,
1121
1470
str(self.interface
1122
+ u'\0'))
1123
except socket.error, error:
1471
+ '\0'))
1472
except socket.error as error:
1124
1473
if error[0] == errno.EPERM:
1125
logger.error(u"No permission to"
1126
u" bind to interface %s",
1474
logger.error("No permission to"
1475
" bind to interface %s",
1127
1476
self.interface)
1128
1477
elif error[0] == errno.ENOPROTOOPT:
1129
logger.error(u"SO_BINDTODEVICE not available;"
1130
u" cannot bind to interface %s",
1478
logger.error("SO_BINDTODEVICE not available;"
1479
" cannot bind to interface %s",
1131
1480
self.interface)
1132
1481
else:
1133
1482
raise
1135
1484
if self.server_address[0] or self.server_address[1]:
1136
1485
if not self.server_address[0]:
1137
1486
if self.address_family == socket.AF_INET6:
1138
any_address = u"::" # in6addr_any
1487
any_address = "::" # in6addr_any
1139
1488
else:
1140
1489
any_address = socket.INADDR_ANY
1141
1490
self.server_address = (any_address,
1180
1529
return socketserver.TCPServer.server_activate(self)
1181
1530
def enable(self):
1182
1531
self.enabled = True
1183
def add_pipe(self, pipe):
1532
def add_pipe(self, parent_pipe):
1184
1533
# Call "handle_ipc" for both data and EOF events
1185
gobject.io_add_watch(pipe, gobject.IO_IN | gobject.IO_HUP,
1186
self.handle_ipc)
1187
def handle_ipc(self, source, condition, file_objects={}):
1534
gobject.io_add_watch(parent_pipe.fileno(),
1535
gobject.IO_IN | gobject.IO_HUP,
1536
functools.partial(self.handle_ipc,
1537
parent_pipe = parent_pipe))
1538
1539
def handle_ipc(self, source, condition, parent_pipe=None,
1540
client_object=None):
1188
1541
condition_names = {
1189
gobject.IO_IN: u"IN", # There is data to read.
1190
gobject.IO_OUT: u"OUT", # Data can be written (without
1542
gobject.IO_IN: "IN", # There is data to read.
1543
gobject.IO_OUT: "OUT", # Data can be written (without
1191
1544
# blocking).
1192
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1193
gobject.IO_ERR: u"ERR", # Error condition.
1194
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1545
gobject.IO_PRI: "PRI", # There is urgent data to read.
1546
gobject.IO_ERR: "ERR", # Error condition.
1547
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1195
1548
# broken, usually for pipes and
1196
1549
# sockets).
1197
1550
}
1199
1552
for cond, name in
1200
1553
condition_names.iteritems()
1201
1554
if cond & condition)
1202
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1203
conditions_string)
1204
1205
# Turn the pipe file descriptor into a Python file object
1206
if source not in file_objects:
1207
file_objects[source] = os.fdopen(source, u"r", 1)
1208
1209
# Read a line from the file object
1210
cmdline = file_objects[source].readline()
1211
if not cmdline: # Empty line means end of file
1212
# close the IPC pipe
1213
file_objects[source].close()
1214
del file_objects[source]
1215
1216
# Stop calling this function
1217
return False
1218
1219
logger.debug(u"IPC command: %r", cmdline)
1220
1221
# Parse and act on command
1222
cmd, args = cmdline.rstrip(u"\r\n").split(None, 1)
1223
1224
if cmd == u"NOTFOUND":
1225
logger.warning(u"Client not found for fingerprint: %s",
1226
args)
1227
if self.use_dbus:
1228
# Emit D-Bus signal
1229
mandos_dbus_service.ClientNotFound(args)
1230
elif cmd == u"INVALID":
1231
for client in self.clients:
1232
if client.name == args:
1233
logger.warning(u"Client %s is invalid", args)
1234
if self.use_dbus:
1235
# Emit D-Bus signal
1236
client.Rejected()
1237
break
1238
else:
1239
logger.error(u"Unknown client %s is invalid", args)
1240
elif cmd == u"SENDING":
1241
for client in self.clients:
1242
if client.name == args:
1243
logger.info(u"Sending secret to %s", client.name)
1244
client.checked_ok()
1245
if self.use_dbus:
1246
# Emit D-Bus signal
1247
client.ReceivedSecret()
1248
break
1249
else:
1250
logger.error(u"Sending secret to unknown client %s",
1251
args)
1252
else:
1253
logger.error(u"Unknown IPC command: %r", cmdline)
1254
1255
# Keep calling this function
1555
# error or the other end of multiprocessing.Pipe has closed
1556
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
1557
return False
1558
1559
# Read a request from the child
1560
request = parent_pipe.recv()
1561
command = request[0]
1562
1563
if command == 'init':
1564
fpr = request[1]
1565
address = request[2]
1566
1567
for c in self.clients:
1568
if c.fingerprint == fpr:
1569
client = c
1570
break
1571
else:
1572
logger.info("Client not found for fingerprint: %s, ad"
1573
"dress: %s", fpr, address)
1574
if self.use_dbus:
1575
# Emit D-Bus signal
1576
mandos_dbus_service.ClientNotFound(fpr, address[0])
1577
parent_pipe.send(False)
1578
return False
1579
1580
gobject.io_add_watch(parent_pipe.fileno(),
1581
gobject.IO_IN | gobject.IO_HUP,
1582
functools.partial(self.handle_ipc,
1583
parent_pipe = parent_pipe,
1584
client_object = client))
1585
parent_pipe.send(True)
1586
# remove the old hook in favor of the new above hook on same fileno
1587
return False
1588
if command == 'funcall':
1589
funcname = request[1]
1590
args = request[2]
1591
kwargs = request[3]
1592
1593
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
1594
1595
if command == 'getattr':
1596
attrname = request[1]
1597
if callable(client_object.__getattribute__(attrname)):
1598
parent_pipe.send(('function',))
1599
else:
1600
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
1601
1602
if command == 'setattr':
1603
attrname = request[1]
1604
value = request[2]
1605
setattr(client_object, attrname, value)
1606
1256
1607
return True
1257
1608
1258
1609
1259
1610
def string_to_delta(interval):
1260
1611
"""Parse a string and return a datetime.timedelta
1261
1612
1262
>>> string_to_delta(u'7d')
1613
>>> string_to_delta('7d')
1263
1614
datetime.timedelta(7)
1264
>>> string_to_delta(u'60s')
1615
>>> string_to_delta('60s')
1265
1616
datetime.timedelta(0, 60)
1266
>>> string_to_delta(u'60m')
1617
>>> string_to_delta('60m')
1267
1618
datetime.timedelta(0, 3600)
1268
>>> string_to_delta(u'24h')
1619
>>> string_to_delta('24h')
1269
1620
datetime.timedelta(1)
1270
>>> string_to_delta(u'1w')
1621
>>> string_to_delta('1w')
1271
1622
datetime.timedelta(7)
1272
>>> string_to_delta(u'5m 30s')
1623
>>> string_to_delta('5m 30s')
1273
1624
datetime.timedelta(0, 330)
1274
1625
"""
1275
1626
timevalue = datetime.timedelta(0)
1277
1628
try:
1278
1629
suffix = unicode(s[-1])
1279
1630
value = int(s[:-1])
1280
if suffix == u"d":
1631
if suffix == "d":
1281
1632
delta = datetime.timedelta(value)
1282
elif suffix == u"s":
1633
elif suffix == "s":
1283
1634
delta = datetime.timedelta(0, value)
1284
elif suffix == u"m":
1635
elif suffix == "m":
1285
1636
delta = datetime.timedelta(0, 0, 0, 0, value)
1286
elif suffix == u"h":
1637
elif suffix == "h":
1287
1638
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1288
elif suffix == u"w":
1639
elif suffix == "w":
1289
1640
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1290
1641
else:
1291
raise ValueError
1292
except (ValueError, IndexError):
1293
raise ValueError
1642
raise ValueError("Unknown suffix %r" % suffix)
1643
except (ValueError, IndexError) as e:
1644
raise ValueError(*(e.args))
1294
1645
timevalue += delta
1295
1646
return timevalue
1296
1647
1302
1653
global if_nametoindex
1303
1654
try:
1304
1655
if_nametoindex = (ctypes.cdll.LoadLibrary
1305
(ctypes.util.find_library(u"c"))
1656
(ctypes.util.find_library("c"))
1306
1657
.if_nametoindex)
1307
1658
except (OSError, AttributeError):
1308
logger.warning(u"Doing if_nametoindex the hard way")
1659
logger.warning("Doing if_nametoindex the hard way")
1309
1660
def if_nametoindex(interface):
1310
1661
"Get an interface index the hard way, i.e. using fcntl()"
1311
1662
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1312
with closing(socket.socket()) as s:
1663
with contextlib.closing(socket.socket()) as s:
1313
1664
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1314
struct.pack(str(u"16s16x"),
1665
struct.pack(str("16s16x"),
1315
1666
interface))
1316
interface_index = struct.unpack(str(u"I"),
1667
interface_index = struct.unpack(str("I"),
1317
1668
ifreq[16:20])[0]
1318
1669
return interface_index
1319
1670
return if_nametoindex(interface)
1327
1678
sys.exit()
1328
1679
os.setsid()
1329
1680
if not nochdir:
1330
os.chdir(u"/")
1681
os.chdir("/")
1331
1682
if os.fork():
1332
1683
sys.exit()
1333
1684
if not noclose:
1335
1686
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1336
1687
if not stat.S_ISCHR(os.fstat(null).st_mode):
1337
1688
raise OSError(errno.ENODEV,
1338
u"/dev/null not a character device")
1689
"%s not a character device"
1690
% os.path.devnull)
1339
1691
os.dup2(null, sys.stdin.fileno())
1340
1692
os.dup2(null, sys.stdout.fileno())
1341
1693
os.dup2(null, sys.stderr.fileno())
1348
1700
##################################################################
1349
1701
# Parsing of options, both command line and config file
1350
1702
1351
parser = optparse.OptionParser(version = "%%prog %s" % version)
1352
parser.add_option("-i", u"--interface", type=u"string",
1353
metavar="IF", help=u"Bind to interface IF")
1354
parser.add_option("-a", u"--address", type=u"string",
1355
help=u"Address to listen for requests on")
1356
parser.add_option("-p", u"--port", type=u"int",
1357
help=u"Port number to receive requests on")
1358
parser.add_option("--check", action=u"store_true",
1359
help=u"Run self-test")
1360
parser.add_option("--debug", action=u"store_true",
1361
help=u"Debug mode; run in foreground and log to"
1362
u" terminal")
1363
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1364
u" priority string (see GnuTLS documentation)")
1365
parser.add_option("--servicename", type=u"string",
1366
metavar=u"NAME", help=u"Zeroconf service name")
1367
parser.add_option("--configdir", type=u"string",
1368
default=u"/etc/mandos", metavar=u"DIR",
1369
help=u"Directory to search for configuration"
1370
u" files")
1371
parser.add_option("--no-dbus", action=u"store_false",
1372
dest=u"use_dbus", help=u"Do not provide D-Bus"
1373
u" system bus interface")
1374
parser.add_option("--no-ipv6", action=u"store_false",
1375
dest=u"use_ipv6", help=u"Do not use IPv6")
1376
options = parser.parse_args()[0]
1703
parser = argparse.ArgumentParser()
1704
parser.add_argument("-v", "--version", action="version",
1705
version = "%%(prog)s %s" % version,
1706
help="show version number and exit")
1707
parser.add_argument("-i", "--interface", metavar="IF",
1708
help="Bind to interface IF")
1709
parser.add_argument("-a", "--address",
1710
help="Address to listen for requests on")
1711
parser.add_argument("-p", "--port", type=int,
1712
help="Port number to receive requests on")
1713
parser.add_argument("--check", action="store_true",
1714
help="Run self-test")
1715
parser.add_argument("--debug", action="store_true",
1716
help="Debug mode; run in foreground and log"
1717
" to terminal")
1718
parser.add_argument("--debuglevel", metavar="LEVEL",
1719
help="Debug level for stdout output")
1720
parser.add_argument("--priority", help="GnuTLS"
1721
" priority string (see GnuTLS documentation)")
1722
parser.add_argument("--servicename",
1723
metavar="NAME", help="Zeroconf service name")
1724
parser.add_argument("--configdir",
1725
default="/etc/mandos", metavar="DIR",
1726
help="Directory to search for configuration"
1727
" files")
1728
parser.add_argument("--no-dbus", action="store_false",
1729
dest="use_dbus", help="Do not provide D-Bus"
1730
" system bus interface")
1731
parser.add_argument("--no-ipv6", action="store_false",
1732
dest="use_ipv6", help="Do not use IPv6")
1733
options = parser.parse_args()
1377
1734
1378
1735
if options.check:
1379
1736
import doctest
1381
1738
sys.exit()
1382
1739
1383
1740
# Default values for config file for server-global settings
1384
server_defaults = { u"interface": u"",
1385
u"address": u"",
1386
u"port": u"",
1387
u"debug": u"False",
1388
u"priority":
1389
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1390
u"servicename": u"Mandos",
1391
u"use_dbus": u"True",
1392
u"use_ipv6": u"True",
1741
server_defaults = { "interface": "",
1742
"address": "",
1743
"port": "",
1744
"debug": "False",
1745
"priority":
1746
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1747
"servicename": "Mandos",
1748
"use_dbus": "True",
1749
"use_ipv6": "True",
1750
"debuglevel": "",
1393
1751
}
1394
1752
1395
1753
# Parse config file for server-global settings
1396
1754
server_config = configparser.SafeConfigParser(server_defaults)
1397
1755
del server_defaults
1398
1756
server_config.read(os.path.join(options.configdir,
1399
u"mandos.conf"))
1757
"mandos.conf"))
1400
1758
# Convert the SafeConfigParser object to a dict
1401
1759
server_settings = server_config.defaults()
1402
1760
# Use the appropriate methods on the non-string config options
1403
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1404
server_settings[option] = server_config.getboolean(u"DEFAULT",
1761
for option in ("debug", "use_dbus", "use_ipv6"):
1762
server_settings[option] = server_config.getboolean("DEFAULT",
1405
1763
option)
1406
1764
if server_settings["port"]:
1407
server_settings["port"] = server_config.getint(u"DEFAULT",
1408
u"port")
1765
server_settings["port"] = server_config.getint("DEFAULT",
1766
"port")
1409
1767
del server_config
1410
1768
1411
1769
# Override the settings from the config file with command line
1412
1770
# options, if set.
1413
for option in (u"interface", u"address", u"port", u"debug",
1414
u"priority", u"servicename", u"configdir",
1415
u"use_dbus", u"use_ipv6"):
1771
for option in ("interface", "address", "port", "debug",
1772
"priority", "servicename", "configdir",
1773
"use_dbus", "use_ipv6", "debuglevel"):
1416
1774
value = getattr(options, option)
1417
1775
if value is not None:
1418
1776
server_settings[option] = value
1426
1784
##################################################################
1427
1785
1428
1786
# For convenience
1429
debug = server_settings[u"debug"]
1430
use_dbus = server_settings[u"use_dbus"]
1431
use_ipv6 = server_settings[u"use_ipv6"]
1432
1433
if not debug:
1434
syslogger.setLevel(logging.WARNING)
1435
console.setLevel(logging.WARNING)
1436
1437
if server_settings[u"servicename"] != u"Mandos":
1787
debug = server_settings["debug"]
1788
debuglevel = server_settings["debuglevel"]
1789
use_dbus = server_settings["use_dbus"]
1790
use_ipv6 = server_settings["use_ipv6"]
1791
1792
if server_settings["servicename"] != "Mandos":
1438
1793
syslogger.setFormatter(logging.Formatter
1439
(u'Mandos (%s) [%%(process)d]:'
1440
u' %%(levelname)s: %%(message)s'
1441
% server_settings[u"servicename"]))
1794
('Mandos (%s) [%%(process)d]:'
1795
' %%(levelname)s: %%(message)s'
1796
% server_settings["servicename"]))
1442
1797
1443
1798
# Parse config file with clients
1444
client_defaults = { u"timeout": u"1h",
1445
u"interval": u"5m",
1446
u"checker": u"fping -q -- %%(host)s",
1447
u"host": u"",
1799
client_defaults = { "timeout": "1h",
1800
"interval": "5m",
1801
"checker": "fping -q -- %%(host)s",
1802
"host": "",
1803
"approval_delay": "0s",
1804
"approval_duration": "1s",
1448
1805
}
1449
1806
client_config = configparser.SafeConfigParser(client_defaults)
1450
client_config.read(os.path.join(server_settings[u"configdir"],
1451
u"clients.conf"))
1807
client_config.read(os.path.join(server_settings["configdir"],
1808
"clients.conf"))
1452
1809
1453
1810
global mandos_dbus_service
1454
1811
mandos_dbus_service = None
1455
1812
1456
tcp_server = MandosServer((server_settings[u"address"],
1457
server_settings[u"port"]),
1813
tcp_server = MandosServer((server_settings["address"],
1814
server_settings["port"]),
1458
1815
ClientHandler,
1459
interface=server_settings[u"interface"],
1816
interface=(server_settings["interface"]
1817
or None),
1460
1818
use_ipv6=use_ipv6,
1461
1819
gnutls_priority=
1462
server_settings[u"priority"],
1820
server_settings["priority"],
1463
1821
use_dbus=use_dbus)
1464
pidfilename = u"/var/run/mandos.pid"
1465
try:
1466
pidfile = open(pidfilename, u"w")
1467
except IOError:
1468
logger.error(u"Could not open file %r", pidfilename)
1822
if not debug:
1823
pidfilename = "/var/run/mandos.pid"
1824
try:
1825
pidfile = open(pidfilename, "w")
1826
except IOError:
1827
logger.error("Could not open file %r", pidfilename)
1469
1828
1470
1829
try:
1471
uid = pwd.getpwnam(u"_mandos").pw_uid
1472
gid = pwd.getpwnam(u"_mandos").pw_gid
1830
uid = pwd.getpwnam("_mandos").pw_uid
1831
gid = pwd.getpwnam("_mandos").pw_gid
1473
1832
except KeyError:
1474
1833
try:
1475
uid = pwd.getpwnam(u"mandos").pw_uid
1476
gid = pwd.getpwnam(u"mandos").pw_gid
1834
uid = pwd.getpwnam("mandos").pw_uid
1835
gid = pwd.getpwnam("mandos").pw_gid
1477
1836
except KeyError:
1478
1837
try:
1479
uid = pwd.getpwnam(u"nobody").pw_uid
1480
gid = pwd.getpwnam(u"nobody").pw_gid
1838
uid = pwd.getpwnam("nobody").pw_uid
1839
gid = pwd.getpwnam("nobody").pw_gid
1481
1840
except KeyError:
1482
1841
uid = 65534
1483
1842
gid = 65534
1484
1843
try:
1485
1844
os.setgid(gid)
1486
1845
os.setuid(uid)
1487
except OSError, error:
1846
except OSError as error:
1488
1847
if error[0] != errno.EPERM:
1489
1848
raise error
1490
1849
1491
# Enable all possible GnuTLS debugging
1850
if not debug and not debuglevel:
1851
syslogger.setLevel(logging.WARNING)
1852
console.setLevel(logging.WARNING)
1853
if debuglevel:
1854
level = getattr(logging, debuglevel.upper())
1855
syslogger.setLevel(level)
1856
console.setLevel(level)
1857
1492
1858
if debug:
1859
# Enable all possible GnuTLS debugging
1860
1493
1861
# "Use a log level over 10 to enable all debugging options."
1494
1862
# - GnuTLS manual
1495
1863
gnutls.library.functions.gnutls_global_set_log_level(11)
1496
1864
1497
1865
@gnutls.library.types.gnutls_log_func
1498
1866
def debug_gnutls(level, string):
1499
logger.debug(u"GnuTLS: %s", string[:-1])
1867
logger.debug("GnuTLS: %s", string[:-1])
1500
1868
1501
1869
(gnutls.library.functions
1502
1870
.gnutls_global_set_log_function(debug_gnutls))
1871
1872
# Redirect stdin so all checkers get /dev/null
1873
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1874
os.dup2(null, sys.stdin.fileno())
1875
if null > 2:
1876
os.close(null)
1877
else:
1878
# No console logging
1879
logger.removeHandler(console)
1880
1881
# Need to fork before connecting to D-Bus
1882
if not debug:
1883
# Close all input and output, do double fork, etc.
1884
daemon()
1503
1885
1504
1886
global main_loop
1505
1887
# From the Avahi example code
1508
1890
bus = dbus.SystemBus()
1509
1891
# End of Avahi example code
1510
1892
if use_dbus:
1511
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos", bus)
1893
try:
1894
bus_name = dbus.service.BusName("se.bsnet.fukt.Mandos",
1895
bus, do_not_queue=True)
1896
except dbus.exceptions.NameExistsException as e:
1897
logger.error(unicode(e) + ", disabling D-Bus")
1898
use_dbus = False
1899
server_settings["use_dbus"] = False
1900
tcp_server.use_dbus = False
1512
1901
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1513
service = AvahiService(name = server_settings[u"servicename"],
1514
servicetype = u"_mandos._tcp",
1902
service = AvahiService(name = server_settings["servicename"],
1903
servicetype = "_mandos._tcp",
1515
1904
protocol = protocol, bus = bus)
1516
1905
if server_settings["interface"]:
1517
1906
service.interface = (if_nametoindex
1518
(str(server_settings[u"interface"])))
1907
(str(server_settings["interface"])))
1908
1909
global multiprocessing_manager
1910
multiprocessing_manager = multiprocessing.Manager()
1519
1911
1520
1912
client_class = Client
1521
1913
if use_dbus:
1522
1914
client_class = functools.partial(ClientDBus, bus = bus)
1915
def client_config_items(config, section):
1916
special_settings = {
1917
"approved_by_default":
1918
lambda: config.getboolean(section,
1919
"approved_by_default"),
1920
}
1921
for name, value in config.items(section):
1922
try:
1923
yield (name, special_settings[name]())
1924
except KeyError:
1925
yield (name, value)
1926
1523
1927
tcp_server.clients.update(set(
1524
1928
client_class(name = section,
1525
config= dict(client_config.items(section)))
1929
config= dict(client_config_items(
1930
client_config, section)))
1526
1931
for section in client_config.sections()))
1527
1932
if not tcp_server.clients:
1528
logger.warning(u"No clients defined")
1529
1530
if debug:
1531
# Redirect stdin so all checkers get /dev/null
1532
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1533
os.dup2(null, sys.stdin.fileno())
1534
if null > 2:
1535
os.close(null)
1536
else:
1537
# No console logging
1538
logger.removeHandler(console)
1539
# Close all input and output, do double fork, etc.
1540
daemon()
1541
1542
try:
1543
with closing(pidfile):
1544
pid = os.getpid()
1545
pidfile.write(str(pid) + "\n")
1546
del pidfile
1547
except IOError:
1548
logger.error(u"Could not write to file %r with PID %d",
1549
pidfilename, pid)
1550
except NameError:
1551
# "pidfile" was never created
1552
pass
1553
del pidfilename
1554
1555
def cleanup():
1556
"Cleanup function; run on exit"
1557
service.cleanup()
1933
logger.warning("No clients defined")
1558
1934
1559
while tcp_server.clients:
1560
client = tcp_server.clients.pop()
1561
client.disable_hook = None
1562
client.disable()
1563
1564
atexit.register(cleanup)
1565
1566
1935
if not debug:
1936
try:
1937
with pidfile:
1938
pid = os.getpid()
1939
pidfile.write(str(pid) + "\n".encode("utf-8"))
1940
del pidfile
1941
except IOError:
1942
logger.error("Could not write to file %r with PID %d",
1943
pidfilename, pid)
1944
except NameError:
1945
# "pidfile" was never created
1946
pass
1947
del pidfilename
1948
1567
1949
signal.signal(signal.SIGINT, signal.SIG_IGN)
1950
1568
1951
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1569
1952
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1570
1953
1572
1955
class MandosDBusService(dbus.service.Object):
1573
1956
"""A D-Bus proxy object"""
1574
1957
def __init__(self):
1575
dbus.service.Object.__init__(self, bus, u"/")
1576
_interface = u"se.bsnet.fukt.Mandos"
1577
1578
@dbus.service.signal(_interface, signature=u"oa{sv}")
1579
def ClientAdded(self, objpath, properties):
1580
"D-Bus signal"
1581
pass
1582
1583
@dbus.service.signal(_interface, signature=u"s")
1584
def ClientNotFound(self, fingerprint):
1585
"D-Bus signal"
1586
pass
1587
1588
@dbus.service.signal(_interface, signature=u"os")
1958
dbus.service.Object.__init__(self, bus, "/")
1959
_interface = "se.bsnet.fukt.Mandos"
1960
1961
@dbus.service.signal(_interface, signature="o")
1962
def ClientAdded(self, objpath):
1963
"D-Bus signal"
1964
pass
1965
1966
@dbus.service.signal(_interface, signature="ss")
1967
def ClientNotFound(self, fingerprint, address):
1968
"D-Bus signal"
1969
pass
1970
1971
@dbus.service.signal(_interface, signature="os")
1589
1972
def ClientRemoved(self, objpath, name):
1590
1973
"D-Bus signal"
1591
1974
pass
1592
1975
1593
@dbus.service.method(_interface, out_signature=u"ao")
1976
@dbus.service.method(_interface, out_signature="ao")
1594
1977
def GetAllClients(self):
1595
1978
"D-Bus method"
1596
1979
return dbus.Array(c.dbus_object_path
1597
1980
for c in tcp_server.clients)
1598
1981
1599
1982
@dbus.service.method(_interface,
1600
out_signature=u"a{oa{sv}}")
1983
out_signature="a{oa{sv}}")
1601
1984
def GetAllClientsWithProperties(self):
1602
1985
"D-Bus method"
1603
1986
return dbus.Dictionary(
1604
((c.dbus_object_path, c.GetAll(u""))
1987
((c.dbus_object_path, c.GetAll(""))
1605
1988
for c in tcp_server.clients),
1606
signature=u"oa{sv}")
1989
signature="oa{sv}")
1607
1990
1608
@dbus.service.method(_interface, in_signature=u"o")
1991
@dbus.service.method(_interface, in_signature="o")
1609
1992
def RemoveClient(self, object_path):
1610
1993
"D-Bus method"
1611
1994
for c in tcp_server.clients:
1613
1996
tcp_server.clients.remove(c)
1614
1997
c.remove_from_connection()
1615
1998
# Don't signal anything except ClientRemoved
1616
c.disable(signal=False)
1999
c.disable(quiet=True)
1617
2000
# Emit D-Bus signal
1618
2001
self.ClientRemoved(object_path, c.name)
1619
2002
return
1620
raise KeyError
2003
raise KeyError(object_path)
1621
2004
1622
2005
del _interface
1623
2006
1624
2007
mandos_dbus_service = MandosDBusService()
1625
2008
2009
def cleanup():
2010
"Cleanup function; run on exit"
2011
service.cleanup()
2012
2013
while tcp_server.clients:
2014
client = tcp_server.clients.pop()
2015
if use_dbus:
2016
client.remove_from_connection()
2017
client.disable_hook = None
2018
# Don't signal anything except ClientRemoved
2019
client.disable(quiet=True)
2020
if use_dbus:
2021
# Emit D-Bus signal
2022
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
2023
client.name)
2024
2025
atexit.register(cleanup)
2026
1626
2027
for client in tcp_server.clients:
1627
2028
if use_dbus:
1628
2029
# Emit D-Bus signal
1629
mandos_dbus_service.ClientAdded(client.dbus_object_path,
1630
client.GetAll(u""))
2030
mandos_dbus_service.ClientAdded(client.dbus_object_path)
1631
2031
client.enable()
1632
2032
1633
2033
tcp_server.enable()
1636
2036
# Find out what port we got
1637
2037
service.port = tcp_server.socket.getsockname()[1]
1638
2038
if use_ipv6:
1639
logger.info(u"Now listening on address %r, port %d,"
2039
logger.info("Now listening on address %r, port %d,"
1640
2040
" flowinfo %d, scope_id %d"
1641
2041
% tcp_server.socket.getsockname())
1642
2042
else: # IPv4
1643
logger.info(u"Now listening on address %r, port %d"
2043
logger.info("Now listening on address %r, port %d"
1644
2044
% tcp_server.socket.getsockname())
1645
2045
1646
2046
#service.interface = tcp_server.socket.getsockname()[3]
1649
2049
# From the Avahi example code
1650
2050
try:
1651
2051
service.activate()
1652
except dbus.exceptions.DBusException, error:
1653
logger.critical(u"DBusException: %s", error)
2052
except dbus.exceptions.DBusException as error:
2053
logger.critical("DBusException: %s", error)
2054
cleanup()
1654
2055
sys.exit(1)
1655
2056
# End of Avahi example code
1656
2057
1659
2060
(tcp_server.handle_request
1660
2061
(*args[2:], **kwargs) or True))
1661
2062
1662
logger.debug(u"Starting main loop")
2063
logger.debug("Starting main loop")
1663
2064
main_loop.run()
1664
except AvahiError, error:
1665
logger.critical(u"AvahiError: %s", error)
2065
except AvahiError as error:
2066
logger.critical("AvahiError: %s", error)
2067
cleanup()
1666
2068
sys.exit(1)
1667
2069
except KeyboardInterrupt:
1668
2070
if debug:
1669
print >> sys.stderr
1670
logger.debug(u"Server received KeyboardInterrupt")
1671
logger.debug(u"Server exiting")
2071
print("", file=sys.stderr)
2072
logger.debug("Server received KeyboardInterrupt")
2073
logger.debug("Server exiting")
2074
# Must run before the D-Bus bus name gets deregistered
2075
cleanup()
1672
2076
1673
2077
if __name__ == '__main__':
1674
2078
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0