147
151
self.group = None # our entry group
148
152
self.server = None
154
self.entry_group_state_changed_match = None
150
155
def rename(self):
151
156
"""Derived from the Avahi example code"""
152
157
if self.rename_count >= self.max_renames:
153
logger.critical(u"No suitable Zeroconf service name found"
154
u" after %i retries, exiting.",
158
logger.critical("No suitable Zeroconf service name found"
159
" after %i retries, exiting.",
155
160
self.rename_count)
156
raise AvahiServiceError(u"Too many renames")
157
self.name = self.server.GetAlternativeServiceName(self.name)
158
logger.info(u"Changing Zeroconf service name to %r ...",
161
raise AvahiServiceError("Too many renames")
162
self.name = unicode(self.server.GetAlternativeServiceName(self.name))
163
logger.info("Changing Zeroconf service name to %r ...",
160
165
syslogger.setFormatter(logging.Formatter
161
(u'Mandos (%s) [%%(process)d]:'
162
u' %%(levelname)s: %%(message)s'
166
('Mandos (%s) [%%(process)d]:'
167
' %%(levelname)s: %%(message)s'
172
except dbus.exceptions.DBusException as error:
173
logger.critical("DBusException: %s", error)
166
176
self.rename_count += 1
167
177
def remove(self):
168
178
"""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()
172
185
"""Derived from the Avahi example code"""
173
187
if self.group is None:
174
188
self.group = dbus.Interface(
175
189
self.bus.get_object(avahi.DBUS_NAME,
176
190
self.server.EntryGroupNew()),
177
191
avahi.DBUS_INTERFACE_ENTRY_GROUP)
178
self.group.connect_to_signal('StateChanged',
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' ...",
182
196
self.name, self.type)
183
197
self.group.AddService(
191
205
self.group.Commit()
192
206
def entry_group_state_changed(self, state, error):
193
207
"""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)
196
210
if state == avahi.ENTRY_GROUP_ESTABLISHED:
197
logger.debug(u"Zeroconf service established.")
211
logger.debug("Zeroconf service established.")
198
212
elif state == avahi.ENTRY_GROUP_COLLISION:
199
logger.warning(u"Zeroconf service name collision.")
213
logger.info("Zeroconf service name collision.")
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",
204
raise AvahiGroupError(u"State changed: %s"
218
raise AvahiGroupError("State changed: %s"
205
219
% unicode(error))
206
220
def cleanup(self):
207
221
"""Derived from the Avahi example code"""
208
222
if self.group is not None:
225
except (dbus.exceptions.UnknownMethodException,
226
dbus.exceptions.DBusException) as e:
210
228
self.group = None
211
def server_state_changed(self, state):
230
def server_state_changed(self, state, error=None):
212
231
"""Derived from the Avahi example code"""
213
if state == avahi.SERVER_COLLISION:
214
logger.error(u"Zeroconf server name collision")
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",
238
avahi.SERVER_FAILURE:
239
"Zeroconf server failure" }
240
if state in bad_states:
241
if bad_states[state] is not None:
243
logger.error(bad_states[state])
245
logger.error(bad_states[state] + ": %r", error)
216
247
elif state == avahi.SERVER_RUNNING:
251
logger.debug("Unknown state: %r", state)
253
logger.debug("Unknown state: %r: %r", state, error)
218
254
def activate(self):
219
255
"""Derived from the Avahi example code"""
220
256
if self.server is None:
221
257
self.server = dbus.Interface(
222
258
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())
231
268
"""A representation of a client host served by this server.
234
name: string; from the config file, used in log messages and
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)
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
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
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
extended_timeout: extra long timeout when password has been sent
301
runtime_expansions: Allowed attributes for runtime expansion.
302
expires: datetime.datetime(); time (UTC) when a client will be
306
runtime_expansions = ("approval_delay", "approval_duration",
307
"created", "enabled", "fingerprint",
308
"host", "interval", "last_checked_ok",
309
"last_enabled", "name", "timeout")
262
312
def _timedelta_to_milliseconds(td):
263
313
"Convert a datetime.timedelta() to milliseconds"
281
338
if config is None:
283
logger.debug(u"Creating client %r", self.name)
340
logger.debug("Creating client %r", self.name)
284
341
# Uppercase and remove spaces from fingerprint for later
285
342
# comparison purposes with return value from the fingerprint()
287
self.fingerprint = (config[u"fingerprint"].upper()
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
295
(config[u"secfile"])),
344
self.fingerprint = (config["fingerprint"].upper()
346
logger.debug(" Fingerprint: %s", self.fingerprint)
347
if "secret" in config:
348
self.secret = config["secret"].decode("base64")
349
elif "secfile" in config:
350
with open(os.path.expanduser(os.path.expandvars
351
(config["secfile"])),
297
353
self.secret = secfile.read()
299
raise TypeError(u"No secret or secfile for client %s"
355
raise TypeError("No secret or secfile for client %s"
301
self.host = config.get(u"host", u"")
357
self.host = config.get("host", "")
302
358
self.created = datetime.datetime.utcnow()
303
359
self.enabled = False
360
self.last_approval_request = None
304
361
self.last_enabled = None
305
362
self.last_checked_ok = None
306
self.timeout = string_to_delta(config[u"timeout"])
307
self.interval = string_to_delta(config[u"interval"])
363
self.timeout = string_to_delta(config["timeout"])
364
self.extended_timeout = string_to_delta(config["extended_timeout"])
365
self.interval = string_to_delta(config["interval"])
308
366
self.disable_hook = disable_hook
309
367
self.checker = None
310
368
self.checker_initiator_tag = None
311
369
self.disable_initiator_tag = None
312
371
self.checker_callback_tag = None
313
self.checker_command = config[u"checker"]
372
self.checker_command = config["checker"]
314
373
self.current_checker_command = None
315
374
self.last_connect = None
375
self._approved = None
376
self.approved_by_default = config.get("approved_by_default",
378
self.approvals_pending = 0
379
self.approval_delay = string_to_delta(
380
config["approval_delay"])
381
self.approval_duration = string_to_delta(
382
config["approval_duration"])
383
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
385
def send_changedstate(self):
386
self.changedstate.acquire()
387
self.changedstate.notify_all()
388
self.changedstate.release()
317
390
def enable(self):
318
391
"""Start this client's checker and timeout hooks"""
319
if getattr(self, u"enabled", False):
392
if getattr(self, "enabled", False):
320
393
# Already enabled
395
self.send_changedstate()
322
396
self.last_enabled = datetime.datetime.utcnow()
323
397
# Schedule a new checker to be started an 'interval' from now,
324
398
# and every interval from then on.
363
441
if os.WIFEXITED(condition):
364
442
exitstatus = os.WEXITSTATUS(condition)
365
443
if exitstatus == 0:
366
logger.info(u"Checker for %(name)s succeeded",
444
logger.info("Checker for %(name)s succeeded",
368
446
self.checked_ok()
370
logger.info(u"Checker for %(name)s failed",
448
logger.info("Checker for %(name)s failed",
373
logger.warning(u"Checker for %(name)s crashed?",
451
logger.warning("Checker for %(name)s crashed?",
376
def checked_ok(self):
454
def checked_ok(self, timeout=None):
377
455
"""Bump up the timeout for this client.
379
457
This should only be called when the client has been seen,
461
timeout = self.timeout
382
462
self.last_checked_ok = datetime.datetime.utcnow()
383
463
gobject.source_remove(self.disable_initiator_tag)
464
self.expires = datetime.datetime.utcnow() + timeout
384
465
self.disable_initiator_tag = (gobject.timeout_add
385
(self.timeout_milliseconds(),
466
(self._timedelta_to_milliseconds(timeout),
469
def need_approval(self):
470
self.last_approval_request = datetime.datetime.utcnow()
388
472
def start_checker(self):
389
473
"""Start a new checker subprocess if one is not running.
419
503
command = self.checker_command % self.host
420
504
except TypeError:
421
505
# Escape attributes for the shell
422
escaped_attrs = dict((key,
423
re.escape(unicode(str(val),
427
vars(self).iteritems())
506
escaped_attrs = dict(
508
re.escape(unicode(str(getattr(self, attr, "")),
512
self.runtime_expansions)
429
515
command = self.checker_command % escaped_attrs
430
except TypeError, error:
431
logger.error(u'Could not format string "%s":'
432
u' %s', self.checker_command, error)
516
except TypeError as error:
517
logger.error('Could not format string "%s":'
518
' %s', self.checker_command, error)
433
519
return True # Try again later
434
520
self.current_checker_command = command
436
logger.info(u"Starting checker %r for %s",
522
logger.info("Starting checker %r for %s",
437
523
command, self.name)
438
524
# We don't need to redirect stdout and stderr, since
439
525
# in normal mode, that is already done by daemon(),
463
549
if self.checker_callback_tag:
464
550
gobject.source_remove(self.checker_callback_tag)
465
551
self.checker_callback_tag = None
466
if getattr(self, u"checker", None) is None:
552
if getattr(self, "checker", None) is None:
468
logger.debug(u"Stopping checker for %(name)s", vars(self))
554
logger.debug("Stopping checker for %(name)s", vars(self))
470
556
os.kill(self.checker.pid, signal.SIGTERM)
472
558
#if self.checker.poll() is None:
473
559
# os.kill(self.checker.pid, signal.SIGKILL)
474
except OSError, error:
560
except OSError as error:
475
561
if error.errno != errno.ESRCH: # No such process
477
563
self.checker = None
479
def still_valid(self):
480
"""Has the timeout not yet passed for this client?"""
481
if not getattr(self, u"enabled", False):
483
now = datetime.datetime.utcnow()
484
if self.last_checked_ok is None:
485
return now < (self.created + self.timeout)
487
return now < (self.last_checked_ok + self.timeout)
490
def dbus_service_property(dbus_interface, signature=u"v",
491
access=u"readwrite", byte_arrays=False):
565
def dbus_service_property(dbus_interface, signature="v",
566
access="readwrite", byte_arrays=False):
492
567
"""Decorators for marking methods of a DBusObjectWithProperties to
493
568
become properties on the D-Bus.
567
647
# No such property
568
raise DBusPropertyNotFound(self.dbus_object_path + u":"
569
+ interface_name + u"."
648
raise DBusPropertyNotFound(self.dbus_object_path + ":"
649
+ interface_name + "."
572
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
652
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
574
654
def Get(self, interface_name, property_name):
575
655
"""Standard D-Bus property Get() method, see D-Bus standard.
577
657
prop = self._get_dbus_property(interface_name, property_name)
578
if prop._dbus_access == u"write":
658
if prop._dbus_access == "write":
579
659
raise DBusPropertyAccessException(property_name)
581
if not hasattr(value, u"variant_level"):
661
if not hasattr(value, "variant_level"):
583
663
return type(value)(value, variant_level=value.variant_level+1)
585
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
665
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
586
666
def Set(self, interface_name, property_name, value):
587
667
"""Standard D-Bus property Set() method, see D-Bus standard.
589
669
prop = self._get_dbus_property(interface_name, property_name)
590
if prop._dbus_access == u"read":
670
if prop._dbus_access == "read":
591
671
raise DBusPropertyAccessException(property_name)
592
if prop._dbus_get_args_options[u"byte_arrays"]:
672
if prop._dbus_get_args_options["byte_arrays"]:
673
# The byte_arrays option is not supported yet on
674
# signatures other than "ay".
675
if prop._dbus_signature != "ay":
593
677
value = dbus.ByteArray(''.join(unichr(byte)
594
678
for byte in value))
597
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
598
out_signature=u"a{sv}")
681
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
682
out_signature="a{sv}")
599
683
def GetAll(self, interface_name):
600
684
"""Standard D-Bus property GetAll() method, see D-Bus
632
716
document = xml.dom.minidom.parseString(xmlstring)
633
717
def make_tag(document, name, prop):
634
e = document.createElement(u"property")
635
e.setAttribute(u"name", name)
636
e.setAttribute(u"type", prop._dbus_signature)
637
e.setAttribute(u"access", prop._dbus_access)
718
e = document.createElement("property")
719
e.setAttribute("name", name)
720
e.setAttribute("type", prop._dbus_signature)
721
e.setAttribute("access", prop._dbus_access)
639
for if_tag in document.getElementsByTagName(u"interface"):
723
for if_tag in document.getElementsByTagName("interface"):
640
724
for tag in (make_tag(document, name, prop)
642
726
in self._get_all_dbus_properties()
643
727
if prop._dbus_interface
644
== if_tag.getAttribute(u"name")):
728
== if_tag.getAttribute("name")):
645
729
if_tag.appendChild(tag)
646
730
# Add the names to the return values for the
647
731
# "org.freedesktop.DBus.Properties" methods
648
if (if_tag.getAttribute(u"name")
649
== u"org.freedesktop.DBus.Properties"):
650
for cn in if_tag.getElementsByTagName(u"method"):
651
if cn.getAttribute(u"name") == u"Get":
652
for arg in cn.getElementsByTagName(u"arg"):
653
if (arg.getAttribute(u"direction")
655
arg.setAttribute(u"name", u"value")
656
elif cn.getAttribute(u"name") == u"GetAll":
657
for arg in cn.getElementsByTagName(u"arg"):
658
if (arg.getAttribute(u"direction")
660
arg.setAttribute(u"name", u"props")
661
xmlstring = document.toxml(u"utf-8")
732
if (if_tag.getAttribute("name")
733
== "org.freedesktop.DBus.Properties"):
734
for cn in if_tag.getElementsByTagName("method"):
735
if cn.getAttribute("name") == "Get":
736
for arg in cn.getElementsByTagName("arg"):
737
if (arg.getAttribute("direction")
739
arg.setAttribute("name", "value")
740
elif cn.getAttribute("name") == "GetAll":
741
for arg in cn.getElementsByTagName("arg"):
742
if (arg.getAttribute("direction")
744
arg.setAttribute("name", "props")
745
xmlstring = document.toxml("utf-8")
662
746
document.unlink()
663
747
except (AttributeError, xml.dom.DOMException,
664
xml.parsers.expat.ExpatError), error:
665
logger.error(u"Failed to override Introspection method",
748
xml.parsers.expat.ExpatError) as error:
749
logger.error("Failed to override Introspection method",
674
758
dbus_object_path: dbus.ObjectPath
675
759
bus: dbus.SystemBus()
762
runtime_expansions = (Client.runtime_expansions
763
+ ("dbus_object_path",))
677
765
# dbus.service.Object doesn't use super(), so we can't either.
679
767
def __init__(self, bus = None, *args, **kwargs):
768
self._approvals_pending = 0
681
770
Client.__init__(self, *args, **kwargs)
682
771
# Only now, when this client is initialized, can it show up on
773
client_object_name = unicode(self.name).translate(
684
776
self.dbus_object_path = (dbus.ObjectPath
686
+ self.name.replace(u".", u"_")))
777
("/clients/" + client_object_name))
687
778
DBusObjectWithProperties.__init__(self, self.bus,
688
779
self.dbus_object_path)
780
def _set_expires(self, value):
781
old_value = getattr(self, "_expires", None)
782
self._expires = value
783
if hasattr(self, "dbus_object_path") and old_value != value:
784
dbus_time = (self._datetime_to_dbus(self._expires,
786
self.PropertyChanged(dbus.String("Expires"),
788
expires = property(lambda self: self._expires, _set_expires)
791
def _get_approvals_pending(self):
792
return self._approvals_pending
793
def _set_approvals_pending(self, value):
794
old_value = self._approvals_pending
795
self._approvals_pending = value
797
if (hasattr(self, "dbus_object_path")
798
and bval is not bool(old_value)):
799
dbus_bool = dbus.Boolean(bval, variant_level=1)
800
self.PropertyChanged(dbus.String("ApprovalPending"),
803
approvals_pending = property(_get_approvals_pending,
804
_set_approvals_pending)
805
del _get_approvals_pending, _set_approvals_pending
691
808
def _datetime_to_dbus(dt, variant_level=0):
692
809
"""Convert a UTC datetime.datetime() to a D-Bus type."""
811
return dbus.String("", variant_level = variant_level)
693
812
return dbus.String(dt.isoformat(),
694
813
variant_level=variant_level)
696
815
def enable(self):
697
oldstate = getattr(self, u"enabled", False)
816
oldstate = getattr(self, "enabled", False)
698
817
r = Client.enable(self)
699
818
if oldstate != self.enabled:
700
819
# Emit D-Bus signals
701
self.PropertyChanged(dbus.String(u"enabled"),
820
self.PropertyChanged(dbus.String("Enabled"),
702
821
dbus.Boolean(True, variant_level=1))
703
822
self.PropertyChanged(
704
dbus.String(u"last_enabled"),
823
dbus.String("LastEnabled"),
705
824
self._datetime_to_dbus(self.last_enabled,
706
825
variant_level=1))
709
828
def disable(self, quiet = False):
710
oldstate = getattr(self, u"enabled", False)
829
oldstate = getattr(self, "enabled", False)
711
830
r = Client.disable(self, quiet=quiet)
712
831
if not quiet and oldstate != self.enabled:
713
832
# Emit D-Bus signal
714
self.PropertyChanged(dbus.String(u"enabled"),
833
self.PropertyChanged(dbus.String("Enabled"),
715
834
dbus.Boolean(False, variant_level=1))
768
895
# Emit D-Bus signal
769
896
self.CheckerStarted(self.current_checker_command)
770
897
self.PropertyChanged(
771
dbus.String(u"checker_running"),
898
dbus.String("CheckerRunning"),
772
899
dbus.Boolean(True, variant_level=1))
775
902
def stop_checker(self, *args, **kwargs):
776
old_checker = getattr(self, u"checker", None)
903
old_checker = getattr(self, "checker", None)
777
904
r = Client.stop_checker(self, *args, **kwargs)
778
905
if (old_checker is not None
779
and getattr(self, u"checker", None) is None):
780
self.PropertyChanged(dbus.String(u"checker_running"),
906
and getattr(self, "checker", None) is None):
907
self.PropertyChanged(dbus.String("CheckerRunning"),
781
908
dbus.Boolean(False, variant_level=1))
784
## D-Bus methods & signals
785
_interface = u"se.bsnet.fukt.Mandos.Client"
788
@dbus.service.method(_interface)
790
return self.checked_ok()
911
def _reset_approved(self):
912
self._approved = None
915
def approve(self, value=True):
916
self.send_changedstate()
917
self._approved = value
918
gobject.timeout_add(self._timedelta_to_milliseconds
919
(self.approval_duration),
920
self._reset_approved)
923
## D-Bus methods, signals & properties
924
_interface = "se.bsnet.fukt.Mandos.Client"
792
928
# CheckerCompleted - signal
793
@dbus.service.signal(_interface, signature=u"nxs")
929
@dbus.service.signal(_interface, signature="nxs")
794
930
def CheckerCompleted(self, exitcode, waitstatus, command):
798
934
# CheckerStarted - signal
799
@dbus.service.signal(_interface, signature=u"s")
935
@dbus.service.signal(_interface, signature="s")
800
936
def CheckerStarted(self, command):
804
940
# PropertyChanged - signal
805
@dbus.service.signal(_interface, signature=u"sv")
941
@dbus.service.signal(_interface, signature="sv")
806
942
def PropertyChanged(self, property, value):
842
999
def StopChecker(self):
843
1000
self.stop_checker()
846
@dbus_service_property(_interface, signature=u"s", access=u"read")
847
def name_dbus_property(self):
1004
# ApprovalPending - property
1005
@dbus_service_property(_interface, signature="b", access="read")
1006
def ApprovalPending_dbus_property(self):
1007
return dbus.Boolean(bool(self.approvals_pending))
1009
# ApprovedByDefault - property
1010
@dbus_service_property(_interface, signature="b",
1012
def ApprovedByDefault_dbus_property(self, value=None):
1013
if value is None: # get
1014
return dbus.Boolean(self.approved_by_default)
1015
old_value = self.approved_by_default
1016
self.approved_by_default = bool(value)
1018
if old_value != self.approved_by_default:
1019
self.PropertyChanged(dbus.String("ApprovedByDefault"),
1020
dbus.Boolean(value, variant_level=1))
1022
# ApprovalDelay - property
1023
@dbus_service_property(_interface, signature="t",
1025
def ApprovalDelay_dbus_property(self, value=None):
1026
if value is None: # get
1027
return dbus.UInt64(self.approval_delay_milliseconds())
1028
old_value = self.approval_delay
1029
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1031
if old_value != self.approval_delay:
1032
self.PropertyChanged(dbus.String("ApprovalDelay"),
1033
dbus.UInt64(value, variant_level=1))
1035
# ApprovalDuration - property
1036
@dbus_service_property(_interface, signature="t",
1038
def ApprovalDuration_dbus_property(self, value=None):
1039
if value is None: # get
1040
return dbus.UInt64(self._timedelta_to_milliseconds(
1041
self.approval_duration))
1042
old_value = self.approval_duration
1043
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1045
if old_value != self.approval_duration:
1046
self.PropertyChanged(dbus.String("ApprovalDuration"),
1047
dbus.UInt64(value, variant_level=1))
1050
@dbus_service_property(_interface, signature="s", access="read")
1051
def Name_dbus_property(self):
848
1052
return dbus.String(self.name)
850
# fingerprint - property
851
@dbus_service_property(_interface, signature=u"s", access=u"read")
852
def fingerprint_dbus_property(self):
1054
# Fingerprint - property
1055
@dbus_service_property(_interface, signature="s", access="read")
1056
def Fingerprint_dbus_property(self):
853
1057
return dbus.String(self.fingerprint)
856
@dbus_service_property(_interface, signature=u"s",
858
def host_dbus_property(self, value=None):
1060
@dbus_service_property(_interface, signature="s",
1062
def Host_dbus_property(self, value=None):
859
1063
if value is None: # get
860
1064
return dbus.String(self.host)
1065
old_value = self.host
861
1066
self.host = value
862
1067
# Emit D-Bus signal
863
self.PropertyChanged(dbus.String(u"host"),
864
dbus.String(value, variant_level=1))
1068
if old_value != self.host:
1069
self.PropertyChanged(dbus.String("Host"),
1070
dbus.String(value, variant_level=1))
867
@dbus_service_property(_interface, signature=u"s", access=u"read")
868
def created_dbus_property(self):
1072
# Created - property
1073
@dbus_service_property(_interface, signature="s", access="read")
1074
def Created_dbus_property(self):
869
1075
return dbus.String(self._datetime_to_dbus(self.created))
871
# last_enabled - property
872
@dbus_service_property(_interface, signature=u"s", access=u"read")
873
def last_enabled_dbus_property(self):
874
if self.last_enabled is None:
875
return dbus.String(u"")
876
return dbus.String(self._datetime_to_dbus(self.last_enabled))
1077
# LastEnabled - property
1078
@dbus_service_property(_interface, signature="s", access="read")
1079
def LastEnabled_dbus_property(self):
1080
return self._datetime_to_dbus(self.last_enabled)
879
@dbus_service_property(_interface, signature=u"b",
881
def enabled_dbus_property(self, value=None):
1082
# Enabled - property
1083
@dbus_service_property(_interface, signature="b",
1085
def Enabled_dbus_property(self, value=None):
882
1086
if value is None: # get
883
1087
return dbus.Boolean(self.enabled)
889
# last_checked_ok - property
890
@dbus_service_property(_interface, signature=u"s",
892
def last_checked_ok_dbus_property(self, value=None):
1093
# LastCheckedOK - property
1094
@dbus_service_property(_interface, signature="s",
1096
def LastCheckedOK_dbus_property(self, value=None):
893
1097
if value is not None:
894
1098
self.checked_ok()
896
if self.last_checked_ok is None:
897
return dbus.String(u"")
898
return dbus.String(self._datetime_to_dbus(self
902
@dbus_service_property(_interface, signature=u"t",
904
def timeout_dbus_property(self, value=None):
1100
return self._datetime_to_dbus(self.last_checked_ok)
1102
# Expires - property
1103
@dbus_service_property(_interface, signature="s", access="read")
1104
def Expires_dbus_property(self):
1105
return self._datetime_to_dbus(self.expires)
1107
# LastApprovalRequest - property
1108
@dbus_service_property(_interface, signature="s", access="read")
1109
def LastApprovalRequest_dbus_property(self):
1110
return self._datetime_to_dbus(self.last_approval_request)
1112
# Timeout - property
1113
@dbus_service_property(_interface, signature="t",
1115
def Timeout_dbus_property(self, value=None):
905
1116
if value is None: # get
906
1117
return dbus.UInt64(self.timeout_milliseconds())
1118
old_value = self.timeout
907
1119
self.timeout = datetime.timedelta(0, 0, 0, value)
908
1120
# Emit D-Bus signal
909
self.PropertyChanged(dbus.String(u"timeout"),
910
dbus.UInt64(value, variant_level=1))
911
if getattr(self, u"disable_initiator_tag", None) is None:
1121
if old_value != self.timeout:
1122
self.PropertyChanged(dbus.String("Timeout"),
1123
dbus.UInt64(value, variant_level=1))
1124
if getattr(self, "disable_initiator_tag", None) is None:
913
1126
# Reschedule timeout
914
1127
gobject.source_remove(self.disable_initiator_tag)
915
1128
self.disable_initiator_tag = None
916
1130
time_to_die = (self.
917
1131
_timedelta_to_milliseconds((self
918
1132
.last_checked_ok
923
1137
# The timeout has passed
1140
self.expires = (datetime.datetime.utcnow()
1141
+ datetime.timedelta(milliseconds = time_to_die))
926
1142
self.disable_initiator_tag = (gobject.timeout_add
927
1143
(time_to_die, self.disable))
929
# interval - property
930
@dbus_service_property(_interface, signature=u"t",
932
def interval_dbus_property(self, value=None):
1145
# ExtendedTimeout - property
1146
@dbus_service_property(_interface, signature="t",
1148
def ExtendedTimeout_dbus_property(self, value=None):
1149
if value is None: # get
1150
return dbus.UInt64(self.extended_timeout_milliseconds())
1151
old_value = self.extended_timeout
1152
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1154
if old_value != self.extended_timeout:
1155
self.PropertyChanged(dbus.String("ExtendedTimeout"),
1156
dbus.UInt64(value, variant_level=1))
1158
# Interval - property
1159
@dbus_service_property(_interface, signature="t",
1161
def Interval_dbus_property(self, value=None):
933
1162
if value is None: # get
934
1163
return dbus.UInt64(self.interval_milliseconds())
1164
old_value = self.interval
935
1165
self.interval = datetime.timedelta(0, 0, 0, value)
936
1166
# Emit D-Bus signal
937
self.PropertyChanged(dbus.String(u"interval"),
938
dbus.UInt64(value, variant_level=1))
939
if getattr(self, u"checker_initiator_tag", None) is None:
1167
if old_value != self.interval:
1168
self.PropertyChanged(dbus.String("Interval"),
1169
dbus.UInt64(value, variant_level=1))
1170
if getattr(self, "checker_initiator_tag", None) is None:
941
1172
# Reschedule checker run
942
1173
gobject.source_remove(self.checker_initiator_tag)
944
1175
(value, self.start_checker))
945
1176
self.start_checker() # Start one now, too
948
@dbus_service_property(_interface, signature=u"s",
950
def checker_dbus_property(self, value=None):
1178
# Checker - property
1179
@dbus_service_property(_interface, signature="s",
1181
def Checker_dbus_property(self, value=None):
951
1182
if value is None: # get
952
1183
return dbus.String(self.checker_command)
1184
old_value = self.checker_command
953
1185
self.checker_command = value
954
1186
# Emit D-Bus signal
955
self.PropertyChanged(dbus.String(u"checker"),
956
dbus.String(self.checker_command,
1187
if old_value != self.checker_command:
1188
self.PropertyChanged(dbus.String("Checker"),
1189
dbus.String(self.checker_command,
959
# checker_running - property
960
@dbus_service_property(_interface, signature=u"b",
962
def checker_running_dbus_property(self, value=None):
1192
# CheckerRunning - property
1193
@dbus_service_property(_interface, signature="b",
1195
def CheckerRunning_dbus_property(self, value=None):
963
1196
if value is None: # get
964
1197
return dbus.Boolean(self.checker is not None)
968
1201
self.stop_checker()
970
# object_path - property
971
@dbus_service_property(_interface, signature=u"o", access=u"read")
972
def object_path_dbus_property(self):
1203
# ObjectPath - property
1204
@dbus_service_property(_interface, signature="o", access="read")
1205
def ObjectPath_dbus_property(self):
973
1206
return self.dbus_object_path # is already a dbus.ObjectPath
976
@dbus_service_property(_interface, signature=u"ay",
977
access=u"write", byte_arrays=True)
978
def secret_dbus_property(self, value):
1209
@dbus_service_property(_interface, signature="ay",
1210
access="write", byte_arrays=True)
1211
def Secret_dbus_property(self, value):
979
1212
self.secret = str(value)
1217
class ProxyClient(object):
1218
def __init__(self, child_pipe, fpr, address):
1219
self._pipe = child_pipe
1220
self._pipe.send(('init', fpr, address))
1221
if not self._pipe.recv():
1224
def __getattribute__(self, name):
1225
if(name == '_pipe'):
1226
return super(ProxyClient, self).__getattribute__(name)
1227
self._pipe.send(('getattr', name))
1228
data = self._pipe.recv()
1229
if data[0] == 'data':
1231
if data[0] == 'function':
1232
def func(*args, **kwargs):
1233
self._pipe.send(('funcall', name, args, kwargs))
1234
return self._pipe.recv()[1]
1237
def __setattr__(self, name, value):
1238
if(name == '_pipe'):
1239
return super(ProxyClient, self).__setattr__(name, value)
1240
self._pipe.send(('setattr', name, value))
984
1243
class ClientHandler(socketserver.BaseRequestHandler, object):
985
1244
"""A class to handle client connections.
988
1247
Note: This will run in its own forked process."""
990
1249
def handle(self):
991
logger.info(u"TCP connection from: %s",
992
unicode(self.client_address))
993
logger.debug(u"IPC Pipe FD: %d", self.server.pipe[1])
994
# Open IPC pipe to parent process
995
with closing(os.fdopen(self.server.pipe[1], u"w", 1)) as ipc:
1250
with contextlib.closing(self.server.child_pipe) as child_pipe:
1251
logger.info("TCP connection from: %s",
1252
unicode(self.client_address))
1253
logger.debug("Pipe FD: %d",
1254
self.server.child_pipe.fileno())
996
1256
session = (gnutls.connection
997
1257
.ClientSession(self.request,
998
1258
gnutls.connection
999
1259
.X509Credentials()))
1001
line = self.request.makefile().readline()
1002
logger.debug(u"Protocol version: %r", line)
1004
if int(line.strip().split()[0]) > 1:
1006
except (ValueError, IndexError, RuntimeError), error:
1007
logger.error(u"Unknown protocol version: %s", error)
1010
1261
# Note: gnutls.connection.X509Credentials is really a
1011
1262
# generic GnuTLS certificate credentials object so long as
1012
1263
# no X.509 keys are added to it. Therefore, we can use it
1013
1264
# here despite using OpenPGP certificates.
1015
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1016
# u"+AES-256-CBC", u"+SHA1",
1017
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1266
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1267
# "+AES-256-CBC", "+SHA1",
1268
# "+COMP-NULL", "+CTYPE-OPENPGP",
1019
1270
# Use a fallback default, since this MUST be set.
1020
1271
priority = self.server.gnutls_priority
1021
1272
if priority is None:
1022
priority = u"NORMAL"
1023
1274
(gnutls.library.functions
1024
1275
.gnutls_priority_set_direct(session._c_object,
1025
1276
priority, None))
1278
# Start communication using the Mandos protocol
1279
# Get protocol number
1280
line = self.request.makefile().readline()
1281
logger.debug("Protocol version: %r", line)
1283
if int(line.strip().split()[0]) > 1:
1285
except (ValueError, IndexError, RuntimeError) as error:
1286
logger.error("Unknown protocol version: %s", error)
1289
# Start GnuTLS connection
1028
1291
session.handshake()
1029
except gnutls.errors.GNUTLSError, error:
1030
logger.warning(u"Handshake failed: %s", error)
1292
except gnutls.errors.GNUTLSError as error:
1293
logger.warning("Handshake failed: %s", error)
1031
1294
# Do not run session.bye() here: the session is not
1032
1295
# established. Just abandon the request.
1034
logger.debug(u"Handshake succeeded")
1297
logger.debug("Handshake succeeded")
1299
approval_required = False
1036
fpr = self.fingerprint(self.peer_certificate(session))
1037
except (TypeError, gnutls.errors.GNUTLSError), error:
1038
logger.warning(u"Bad certificate: %s", error)
1041
logger.debug(u"Fingerprint: %s", fpr)
1302
fpr = self.fingerprint(self.peer_certificate
1305
gnutls.errors.GNUTLSError) as error:
1306
logger.warning("Bad certificate: %s", error)
1308
logger.debug("Fingerprint: %s", fpr)
1311
client = ProxyClient(child_pipe, fpr,
1312
self.client_address)
1316
if client.approval_delay:
1317
delay = client.approval_delay
1318
client.approvals_pending += 1
1319
approval_required = True
1322
if not client.enabled:
1323
logger.info("Client %s is disabled",
1325
if self.server.use_dbus:
1327
client.Rejected("Disabled")
1330
if client._approved or not client.approval_delay:
1331
#We are approved or approval is disabled
1333
elif client._approved is None:
1334
logger.info("Client %s needs approval",
1336
if self.server.use_dbus:
1338
client.NeedApproval(
1339
client.approval_delay_milliseconds(),
1340
client.approved_by_default)
1342
logger.warning("Client %s was not approved",
1344
if self.server.use_dbus:
1346
client.Rejected("Denied")
1349
#wait until timeout or approved
1350
#x = float(client._timedelta_to_milliseconds(delay))
1351
time = datetime.datetime.now()
1352
client.changedstate.acquire()
1353
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
1354
client.changedstate.release()
1355
time2 = datetime.datetime.now()
1356
if (time2 - time) >= delay:
1357
if not client.approved_by_default:
1358
logger.warning("Client %s timed out while"
1359
" waiting for approval",
1361
if self.server.use_dbus:
1363
client.Rejected("Approval timed out")
1368
delay -= time2 - time
1371
while sent_size < len(client.secret):
1373
sent = session.send(client.secret[sent_size:])
1374
except gnutls.errors.GNUTLSError as error:
1375
logger.warning("gnutls send failed")
1377
logger.debug("Sent: %d, remaining: %d",
1378
sent, len(client.secret)
1379
- (sent_size + sent))
1382
logger.info("Sending secret to %s", client.name)
1383
# bump the timeout as if seen
1384
client.checked_ok(client.extended_timeout)
1385
if self.server.use_dbus:
1043
for c in self.server.clients:
1044
if c.fingerprint == fpr:
1048
ipc.write(u"NOTFOUND %s %s\n"
1049
% (fpr, unicode(self.client_address)))
1052
# Have to check if client.still_valid(), since it is
1053
# possible that the client timed out while establishing
1054
# the GnuTLS session.
1055
if not client.still_valid():
1056
ipc.write(u"INVALID %s\n" % client.name)
1059
ipc.write(u"SENDING %s\n" % client.name)
1061
while sent_size < len(client.secret):
1062
sent = session.send(client.secret[sent_size:])
1063
logger.debug(u"Sent: %d, remaining: %d",
1064
sent, len(client.secret)
1065
- (sent_size + sent))
1390
if approval_required:
1391
client.approvals_pending -= 1
1394
except gnutls.errors.GNUTLSError as error:
1395
logger.warning("GnuTLS bye failed")
1070
1398
def peer_certificate(session):
1126
1454
# Convert the buffer to a Python bytestring
1127
1455
fpr = ctypes.string_at(buf, buf_len.value)
1128
1456
# Convert the bytestring to hexadecimal notation
1129
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1457
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
1133
class ForkingMixInWithPipe(socketserver.ForkingMixIn, object):
1134
"""Like socketserver.ForkingMixIn, but also pass a pipe."""
1461
class MultiprocessingMixIn(object):
1462
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
1463
def sub_process_main(self, request, address):
1465
self.finish_request(request, address)
1467
self.handle_error(request, address)
1468
self.close_request(request)
1470
def process_request(self, request, address):
1471
"""Start a new process to process the request."""
1472
multiprocessing.Process(target = self.sub_process_main,
1473
args = (request, address)).start()
1475
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1476
""" adds a pipe to the MixIn """
1135
1477
def process_request(self, request, client_address):
1136
1478
"""Overrides and wraps the original process_request().
1138
1480
This function creates a new pipe in self.pipe
1140
self.pipe = os.pipe()
1141
super(ForkingMixInWithPipe,
1482
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1484
super(MultiprocessingMixInWithPipe,
1142
1485
self).process_request(request, client_address)
1143
os.close(self.pipe[1]) # close write end
1144
self.add_pipe(self.pipe[0])
1145
def add_pipe(self, pipe):
1486
self.child_pipe.close()
1487
self.add_pipe(parent_pipe)
1489
def add_pipe(self, parent_pipe):
1146
1490
"""Dummy function; override as necessary"""
1150
class IPv6_TCPServer(ForkingMixInWithPipe,
1491
raise NotImplementedError
1493
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1151
1494
socketserver.TCPServer, object):
1152
1495
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1238
1581
return socketserver.TCPServer.server_activate(self)
1239
1582
def enable(self):
1240
1583
self.enabled = True
1241
def add_pipe(self, pipe):
1584
def add_pipe(self, parent_pipe):
1242
1585
# Call "handle_ipc" for both data and EOF events
1243
gobject.io_add_watch(pipe, gobject.IO_IN | gobject.IO_HUP,
1245
def handle_ipc(self, source, condition, file_objects={}):
1586
gobject.io_add_watch(parent_pipe.fileno(),
1587
gobject.IO_IN | gobject.IO_HUP,
1588
functools.partial(self.handle_ipc,
1589
parent_pipe = parent_pipe))
1591
def handle_ipc(self, source, condition, parent_pipe=None,
1592
client_object=None):
1246
1593
condition_names = {
1247
gobject.IO_IN: u"IN", # There is data to read.
1248
gobject.IO_OUT: u"OUT", # Data can be written (without
1594
gobject.IO_IN: "IN", # There is data to read.
1595
gobject.IO_OUT: "OUT", # Data can be written (without
1250
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1251
gobject.IO_ERR: u"ERR", # Error condition.
1252
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1597
gobject.IO_PRI: "PRI", # There is urgent data to read.
1598
gobject.IO_ERR: "ERR", # Error condition.
1599
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1253
1600
# broken, usually for pipes and
1257
1604
for cond, name in
1258
1605
condition_names.iteritems()
1259
1606
if cond & condition)
1260
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1263
# Turn the pipe file descriptor into a Python file object
1264
if source not in file_objects:
1265
file_objects[source] = os.fdopen(source, u"r", 1)
1267
# Read a line from the file object
1268
cmdline = file_objects[source].readline()
1269
if not cmdline: # Empty line means end of file
1270
# close the IPC pipe
1271
file_objects[source].close()
1272
del file_objects[source]
1274
# Stop calling this function
1277
logger.debug(u"IPC command: %r", cmdline)
1279
# Parse and act on command
1280
cmd, args = cmdline.rstrip(u"\r\n").split(None, 1)
1282
if cmd == u"NOTFOUND":
1283
fpr, address = args.split(None, 1)
1284
logger.warning(u"Client not found for fingerprint: %s, ad"
1285
u"dress: %s", fpr, address)
1288
mandos_dbus_service.ClientNotFound(fpr, address)
1289
elif cmd == u"INVALID":
1290
for client in self.clients:
1291
if client.name == args:
1292
logger.warning(u"Client %s is invalid", args)
1298
logger.error(u"Unknown client %s is invalid", args)
1299
elif cmd == u"SENDING":
1300
for client in self.clients:
1301
if client.name == args:
1302
logger.info(u"Sending secret to %s", client.name)
1309
logger.error(u"Sending secret to unknown client %s",
1312
logger.error(u"Unknown IPC command: %r", cmdline)
1314
# Keep calling this function
1607
# error or the other end of multiprocessing.Pipe has closed
1608
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
1611
# Read a request from the child
1612
request = parent_pipe.recv()
1613
command = request[0]
1615
if command == 'init':
1617
address = request[2]
1619
for c in self.clients:
1620
if c.fingerprint == fpr:
1624
logger.info("Client not found for fingerprint: %s, ad"
1625
"dress: %s", fpr, address)
1628
mandos_dbus_service.ClientNotFound(fpr, address[0])
1629
parent_pipe.send(False)
1632
gobject.io_add_watch(parent_pipe.fileno(),
1633
gobject.IO_IN | gobject.IO_HUP,
1634
functools.partial(self.handle_ipc,
1635
parent_pipe = parent_pipe,
1636
client_object = client))
1637
parent_pipe.send(True)
1638
# remove the old hook in favor of the new above hook on same fileno
1640
if command == 'funcall':
1641
funcname = request[1]
1645
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
1647
if command == 'getattr':
1648
attrname = request[1]
1649
if callable(client_object.__getattribute__(attrname)):
1650
parent_pipe.send(('function',))
1652
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
1654
if command == 'setattr':
1655
attrname = request[1]
1657
setattr(client_object, attrname, value)
1318
1662
def string_to_delta(interval):
1319
1663
"""Parse a string and return a datetime.timedelta
1321
>>> string_to_delta(u'7d')
1665
>>> string_to_delta('7d')
1322
1666
datetime.timedelta(7)
1323
>>> string_to_delta(u'60s')
1667
>>> string_to_delta('60s')
1324
1668
datetime.timedelta(0, 60)
1325
>>> string_to_delta(u'60m')
1669
>>> string_to_delta('60m')
1326
1670
datetime.timedelta(0, 3600)
1327
>>> string_to_delta(u'24h')
1671
>>> string_to_delta('24h')
1328
1672
datetime.timedelta(1)
1329
>>> string_to_delta(u'1w')
1673
>>> string_to_delta('1w')
1330
1674
datetime.timedelta(7)
1331
>>> string_to_delta(u'5m 30s')
1675
>>> string_to_delta('5m 30s')
1332
1676
datetime.timedelta(0, 330)
1334
1678
timevalue = datetime.timedelta(0)
1408
1752
##################################################################
1409
1753
# Parsing of options, both command line and config file
1411
parser = optparse.OptionParser(version = "%%prog %s" % version)
1412
parser.add_option("-i", u"--interface", type=u"string",
1413
metavar="IF", help=u"Bind to interface IF")
1414
parser.add_option("-a", u"--address", type=u"string",
1415
help=u"Address to listen for requests on")
1416
parser.add_option("-p", u"--port", type=u"int",
1417
help=u"Port number to receive requests on")
1418
parser.add_option("--check", action=u"store_true",
1419
help=u"Run self-test")
1420
parser.add_option("--debug", action=u"store_true",
1421
help=u"Debug mode; run in foreground and log to"
1423
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1424
u" priority string (see GnuTLS documentation)")
1425
parser.add_option("--servicename", type=u"string",
1426
metavar=u"NAME", help=u"Zeroconf service name")
1427
parser.add_option("--configdir", type=u"string",
1428
default=u"/etc/mandos", metavar=u"DIR",
1429
help=u"Directory to search for configuration"
1431
parser.add_option("--no-dbus", action=u"store_false",
1432
dest=u"use_dbus", help=u"Do not provide D-Bus"
1433
u" system bus interface")
1434
parser.add_option("--no-ipv6", action=u"store_false",
1435
dest=u"use_ipv6", help=u"Do not use IPv6")
1436
options = parser.parse_args()[0]
1755
parser = argparse.ArgumentParser()
1756
parser.add_argument("-v", "--version", action="version",
1757
version = "%%(prog)s %s" % version,
1758
help="show version number and exit")
1759
parser.add_argument("-i", "--interface", metavar="IF",
1760
help="Bind to interface IF")
1761
parser.add_argument("-a", "--address",
1762
help="Address to listen for requests on")
1763
parser.add_argument("-p", "--port", type=int,
1764
help="Port number to receive requests on")
1765
parser.add_argument("--check", action="store_true",
1766
help="Run self-test")
1767
parser.add_argument("--debug", action="store_true",
1768
help="Debug mode; run in foreground and log"
1770
parser.add_argument("--debuglevel", metavar="LEVEL",
1771
help="Debug level for stdout output")
1772
parser.add_argument("--priority", help="GnuTLS"
1773
" priority string (see GnuTLS documentation)")
1774
parser.add_argument("--servicename",
1775
metavar="NAME", help="Zeroconf service name")
1776
parser.add_argument("--configdir",
1777
default="/etc/mandos", metavar="DIR",
1778
help="Directory to search for configuration"
1780
parser.add_argument("--no-dbus", action="store_false",
1781
dest="use_dbus", help="Do not provide D-Bus"
1782
" system bus interface")
1783
parser.add_argument("--no-ipv6", action="store_false",
1784
dest="use_ipv6", help="Do not use IPv6")
1785
options = parser.parse_args()
1438
1787
if options.check:
1443
1792
# Default values for config file for server-global settings
1444
server_defaults = { u"interface": u"",
1449
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1450
u"servicename": u"Mandos",
1451
u"use_dbus": u"True",
1452
u"use_ipv6": u"True",
1793
server_defaults = { "interface": "",
1798
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1799
"servicename": "Mandos",
1455
1805
# Parse config file for server-global settings
1456
1806
server_config = configparser.SafeConfigParser(server_defaults)
1457
1807
del server_defaults
1458
1808
server_config.read(os.path.join(options.configdir,
1460
1810
# Convert the SafeConfigParser object to a dict
1461
1811
server_settings = server_config.defaults()
1462
1812
# Use the appropriate methods on the non-string config options
1463
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1464
server_settings[option] = server_config.getboolean(u"DEFAULT",
1813
for option in ("debug", "use_dbus", "use_ipv6"):
1814
server_settings[option] = server_config.getboolean("DEFAULT",
1466
1816
if server_settings["port"]:
1467
server_settings["port"] = server_config.getint(u"DEFAULT",
1817
server_settings["port"] = server_config.getint("DEFAULT",
1469
1819
del server_config
1471
1821
# Override the settings from the config file with command line
1472
1822
# options, if set.
1473
for option in (u"interface", u"address", u"port", u"debug",
1474
u"priority", u"servicename", u"configdir",
1475
u"use_dbus", u"use_ipv6"):
1823
for option in ("interface", "address", "port", "debug",
1824
"priority", "servicename", "configdir",
1825
"use_dbus", "use_ipv6", "debuglevel"):
1476
1826
value = getattr(options, option)
1477
1827
if value is not None:
1478
1828
server_settings[option] = value
1486
1836
##################################################################
1488
1838
# For convenience
1489
debug = server_settings[u"debug"]
1490
use_dbus = server_settings[u"use_dbus"]
1491
use_ipv6 = server_settings[u"use_ipv6"]
1494
syslogger.setLevel(logging.WARNING)
1495
console.setLevel(logging.WARNING)
1497
if server_settings[u"servicename"] != u"Mandos":
1839
debug = server_settings["debug"]
1840
debuglevel = server_settings["debuglevel"]
1841
use_dbus = server_settings["use_dbus"]
1842
use_ipv6 = server_settings["use_ipv6"]
1844
if server_settings["servicename"] != "Mandos":
1498
1845
syslogger.setFormatter(logging.Formatter
1499
(u'Mandos (%s) [%%(process)d]:'
1500
u' %%(levelname)s: %%(message)s'
1501
% server_settings[u"servicename"]))
1846
('Mandos (%s) [%%(process)d]:'
1847
' %%(levelname)s: %%(message)s'
1848
% server_settings["servicename"]))
1503
1850
# Parse config file with clients
1504
client_defaults = { u"timeout": u"1h",
1506
u"checker": u"fping -q -- %%(host)s",
1851
client_defaults = { "timeout": "5m",
1852
"extended_timeout": "15m",
1854
"checker": "fping -q -- %%(host)s",
1856
"approval_delay": "0s",
1857
"approval_duration": "1s",
1509
1859
client_config = configparser.SafeConfigParser(client_defaults)
1510
client_config.read(os.path.join(server_settings[u"configdir"],
1860
client_config.read(os.path.join(server_settings["configdir"],
1513
1863
global mandos_dbus_service
1514
1864
mandos_dbus_service = None
1516
tcp_server = MandosServer((server_settings[u"address"],
1517
server_settings[u"port"]),
1866
tcp_server = MandosServer((server_settings["address"],
1867
server_settings["port"]),
1519
interface=server_settings[u"interface"],
1869
interface=(server_settings["interface"]
1520
1871
use_ipv6=use_ipv6,
1521
1872
gnutls_priority=
1522
server_settings[u"priority"],
1873
server_settings["priority"],
1523
1874
use_dbus=use_dbus)
1524
pidfilename = u"/var/run/mandos.pid"
1526
pidfile = open(pidfilename, u"w")
1528
logger.error(u"Could not open file %r", pidfilename)
1876
pidfilename = "/var/run/mandos.pid"
1878
pidfile = open(pidfilename, "w")
1880
logger.error("Could not open file %r", pidfilename)
1531
uid = pwd.getpwnam(u"_mandos").pw_uid
1532
gid = pwd.getpwnam(u"_mandos").pw_gid
1883
uid = pwd.getpwnam("_mandos").pw_uid
1884
gid = pwd.getpwnam("_mandos").pw_gid
1533
1885
except KeyError:
1535
uid = pwd.getpwnam(u"mandos").pw_uid
1536
gid = pwd.getpwnam(u"mandos").pw_gid
1887
uid = pwd.getpwnam("mandos").pw_uid
1888
gid = pwd.getpwnam("mandos").pw_gid
1537
1889
except KeyError:
1539
uid = pwd.getpwnam(u"nobody").pw_uid
1540
gid = pwd.getpwnam(u"nobody").pw_gid
1891
uid = pwd.getpwnam("nobody").pw_uid
1892
gid = pwd.getpwnam("nobody").pw_gid
1541
1893
except KeyError:
1547
except OSError, error:
1899
except OSError as error:
1548
1900
if error[0] != errno.EPERM:
1551
# Enable all possible GnuTLS debugging
1903
if not debug and not debuglevel:
1904
syslogger.setLevel(logging.WARNING)
1905
console.setLevel(logging.WARNING)
1907
level = getattr(logging, debuglevel.upper())
1908
syslogger.setLevel(level)
1909
console.setLevel(level)
1912
# Enable all possible GnuTLS debugging
1553
1914
# "Use a log level over 10 to enable all debugging options."
1554
1915
# - GnuTLS manual
1555
1916
gnutls.library.functions.gnutls_global_set_log_level(11)
1557
1918
@gnutls.library.types.gnutls_log_func
1558
1919
def debug_gnutls(level, string):
1559
logger.debug(u"GnuTLS: %s", string[:-1])
1920
logger.debug("GnuTLS: %s", string[:-1])
1561
1922
(gnutls.library.functions
1562
1923
.gnutls_global_set_log_function(debug_gnutls))
1925
# Redirect stdin so all checkers get /dev/null
1926
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1927
os.dup2(null, sys.stdin.fileno())
1931
# No console logging
1932
logger.removeHandler(console)
1934
# Need to fork before connecting to D-Bus
1936
# Close all input and output, do double fork, etc.
1564
1939
global main_loop
1565
1940
# From the Avahi example code
1569
1944
# End of Avahi example code
1572
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
1947
bus_name = dbus.service.BusName("se.bsnet.fukt.Mandos",
1573
1948
bus, do_not_queue=True)
1574
except dbus.exceptions.NameExistsException, e:
1575
logger.error(unicode(e) + u", disabling D-Bus")
1949
except dbus.exceptions.NameExistsException as e:
1950
logger.error(unicode(e) + ", disabling D-Bus")
1576
1951
use_dbus = False
1577
server_settings[u"use_dbus"] = False
1952
server_settings["use_dbus"] = False
1578
1953
tcp_server.use_dbus = False
1579
1954
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1580
service = AvahiService(name = server_settings[u"servicename"],
1581
servicetype = u"_mandos._tcp",
1955
service = AvahiService(name = server_settings["servicename"],
1956
servicetype = "_mandos._tcp",
1582
1957
protocol = protocol, bus = bus)
1583
1958
if server_settings["interface"]:
1584
1959
service.interface = (if_nametoindex
1585
(str(server_settings[u"interface"])))
1960
(str(server_settings["interface"])))
1962
global multiprocessing_manager
1963
multiprocessing_manager = multiprocessing.Manager()
1587
1965
client_class = Client
1589
1967
client_class = functools.partial(ClientDBus, bus = bus)
1968
def client_config_items(config, section):
1969
special_settings = {
1970
"approved_by_default":
1971
lambda: config.getboolean(section,
1972
"approved_by_default"),
1974
for name, value in config.items(section):
1976
yield (name, special_settings[name]())
1590
1980
tcp_server.clients.update(set(
1591
1981
client_class(name = section,
1592
config= dict(client_config.items(section)))
1982
config= dict(client_config_items(
1983
client_config, section)))
1593
1984
for section in client_config.sections()))
1594
1985
if not tcp_server.clients:
1595
logger.warning(u"No clients defined")
1598
# Redirect stdin so all checkers get /dev/null
1599
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1600
os.dup2(null, sys.stdin.fileno())
1604
# No console logging
1605
logger.removeHandler(console)
1606
# Close all input and output, do double fork, etc.
1610
with closing(pidfile):
1612
pidfile.write(str(pid) + "\n")
1615
logger.error(u"Could not write to file %r with PID %d",
1618
# "pidfile" was never created
1986
logger.warning("No clients defined")
1992
pidfile.write(str(pid) + "\n".encode("utf-8"))
1995
logger.error("Could not write to file %r with PID %d",
1998
# "pidfile" was never created
1623
2002
signal.signal(signal.SIGINT, signal.SIG_IGN)
1624
2004
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1625
2005
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1628
2008
class MandosDBusService(dbus.service.Object):
1629
2009
"""A D-Bus proxy object"""
1630
2010
def __init__(self):
1631
dbus.service.Object.__init__(self, bus, u"/")
1632
_interface = u"se.bsnet.fukt.Mandos"
2011
dbus.service.Object.__init__(self, bus, "/")
2012
_interface = "se.bsnet.fukt.Mandos"
1634
@dbus.service.signal(_interface, signature=u"oa{sv}")
1635
def ClientAdded(self, objpath, properties):
2014
@dbus.service.signal(_interface, signature="o")
2015
def ClientAdded(self, objpath):
1639
@dbus.service.signal(_interface, signature=u"ss")
2019
@dbus.service.signal(_interface, signature="ss")
1640
2020
def ClientNotFound(self, fingerprint, address):
1644
@dbus.service.signal(_interface, signature=u"os")
2024
@dbus.service.signal(_interface, signature="os")
1645
2025
def ClientRemoved(self, objpath, name):
1649
@dbus.service.method(_interface, out_signature=u"ao")
2029
@dbus.service.method(_interface, out_signature="ao")
1650
2030
def GetAllClients(self):
1652
2032
return dbus.Array(c.dbus_object_path
1653
2033
for c in tcp_server.clients)
1655
2035
@dbus.service.method(_interface,
1656
out_signature=u"a{oa{sv}}")
2036
out_signature="a{oa{sv}}")
1657
2037
def GetAllClientsWithProperties(self):
1659
2039
return dbus.Dictionary(
1660
((c.dbus_object_path, c.GetAll(u""))
2040
((c.dbus_object_path, c.GetAll(""))
1661
2041
for c in tcp_server.clients),
1662
signature=u"oa{sv}")
1664
@dbus.service.method(_interface, in_signature=u"o")
2044
@dbus.service.method(_interface, in_signature="o")
1665
2045
def RemoveClient(self, object_path):
1667
2047
for c in tcp_server.clients: