147
152
self.group = None # our entry group
148
153
self.server = None
155
self.entry_group_state_changed_match = None
150
156
def rename(self):
151
157
"""Derived from the Avahi example code"""
152
158
if self.rename_count >= self.max_renames:
153
logger.critical(u"No suitable Zeroconf service name found"
154
u" after %i retries, exiting.",
159
logger.critical("No suitable Zeroconf service name found"
160
" after %i retries, exiting.",
155
161
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 ...",
162
raise AvahiServiceError("Too many renames")
163
self.name = unicode(self.server
164
.GetAlternativeServiceName(self.name))
165
logger.info("Changing Zeroconf service name to %r ...",
160
167
syslogger.setFormatter(logging.Formatter
161
(u'Mandos (%s) [%%(process)d]:'
162
u' %%(levelname)s: %%(message)s'
168
('Mandos (%s) [%%(process)d]:'
169
' %%(levelname)s: %%(message)s'
174
except dbus.exceptions.DBusException as error:
175
logger.critical("DBusException: %s", error)
166
178
self.rename_count += 1
167
179
def remove(self):
168
180
"""Derived from the Avahi example code"""
181
if self.entry_group_state_changed_match is not None:
182
self.entry_group_state_changed_match.remove()
183
self.entry_group_state_changed_match = None
169
184
if self.group is not None:
170
185
self.group.Reset()
172
187
"""Derived from the Avahi example code"""
173
189
if self.group is None:
174
190
self.group = dbus.Interface(
175
191
self.bus.get_object(avahi.DBUS_NAME,
176
192
self.server.EntryGroupNew()),
177
193
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' ...",
194
self.entry_group_state_changed_match = (
195
self.group.connect_to_signal(
196
'StateChanged', self .entry_group_state_changed))
197
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
182
198
self.name, self.type)
183
199
self.group.AddService(
191
207
self.group.Commit()
192
208
def entry_group_state_changed(self, state, error):
193
209
"""Derived from the Avahi example code"""
194
logger.debug(u"Avahi state change: %i", state)
210
logger.debug("Avahi entry group state change: %i", state)
196
212
if state == avahi.ENTRY_GROUP_ESTABLISHED:
197
logger.debug(u"Zeroconf service established.")
213
logger.debug("Zeroconf service established.")
198
214
elif state == avahi.ENTRY_GROUP_COLLISION:
199
logger.warning(u"Zeroconf service name collision.")
215
logger.info("Zeroconf service name collision.")
201
217
elif state == avahi.ENTRY_GROUP_FAILURE:
202
logger.critical(u"Avahi: Error in group state changed %s",
218
logger.critical("Avahi: Error in group state changed %s",
204
raise AvahiGroupError(u"State changed: %s"
220
raise AvahiGroupError("State changed: %s"
205
221
% unicode(error))
206
222
def cleanup(self):
207
223
"""Derived from the Avahi example code"""
208
224
if self.group is not None:
227
except (dbus.exceptions.UnknownMethodException,
228
dbus.exceptions.DBusException) as e:
210
230
self.group = None
211
def server_state_changed(self, state):
232
def server_state_changed(self, state, error=None):
212
233
"""Derived from the Avahi example code"""
213
if state == avahi.SERVER_COLLISION:
214
logger.error(u"Zeroconf server name collision")
234
logger.debug("Avahi server state change: %i", state)
235
bad_states = { avahi.SERVER_INVALID:
236
"Zeroconf server invalid",
237
avahi.SERVER_REGISTERING: None,
238
avahi.SERVER_COLLISION:
239
"Zeroconf server name collision",
240
avahi.SERVER_FAILURE:
241
"Zeroconf server failure" }
242
if state in bad_states:
243
if bad_states[state] is not None:
245
logger.error(bad_states[state])
247
logger.error(bad_states[state] + ": %r", error)
216
249
elif state == avahi.SERVER_RUNNING:
253
logger.debug("Unknown state: %r", state)
255
logger.debug("Unknown state: %r: %r", state, error)
218
256
def activate(self):
219
257
"""Derived from the Avahi example code"""
220
258
if self.server is None:
221
259
self.server = dbus.Interface(
222
260
self.bus.get_object(avahi.DBUS_NAME,
223
avahi.DBUS_PATH_SERVER),
261
avahi.DBUS_PATH_SERVER,
262
follow_name_owner_changes=True),
224
263
avahi.DBUS_INTERFACE_SERVER)
225
self.server.connect_to_signal(u"StateChanged",
264
self.server.connect_to_signal("StateChanged",
226
265
self.server_state_changed)
227
266
self.server_state_changed(self.server.GetState())
269
def _timedelta_to_milliseconds(td):
270
"Convert a datetime.timedelta() to milliseconds"
271
return ((td.days * 24 * 60 * 60 * 1000)
272
+ (td.seconds * 1000)
273
+ (td.microseconds // 1000))
230
275
class Client(object):
231
276
"""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)
279
_approved: bool(); 'None' if not yet approved/disapproved
280
approval_delay: datetime.timedelta(); Time to wait for approval
281
approval_duration: datetime.timedelta(); Duration of one approval
248
282
checker: subprocess.Popen(); a running checker process used
249
283
to see if the client lives.
250
284
'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
285
checker_callback_tag: a gobject event source tag, or None
286
checker_command: string; External command which is run to check
287
if client lives. %() expansions are done at
256
288
runtime with vars(self) as dict, so that for
257
289
instance %(name)s can be used in the command.
290
checker_initiator_tag: a gobject event source tag, or None
291
created: datetime.datetime(); (UTC) object creation
258
292
current_checker_command: string; current running checker_command
293
disable_hook: If set, called by disable() as disable_hook(self)
294
disable_initiator_tag: a gobject event source tag, or None
296
fingerprint: string (40 or 32 hexadecimal digits); used to
297
uniquely identify the client
298
host: string; available for use by the checker command
299
interval: datetime.timedelta(); How often to start a new checker
300
last_approval_request: datetime.datetime(); (UTC) or None
301
last_checked_ok: datetime.datetime(); (UTC) or None
302
last_enabled: datetime.datetime(); (UTC)
303
name: string; from the config file, used in log messages and
305
secret: bytestring; sent verbatim (over TLS) to client
306
timeout: datetime.timedelta(); How long from last_checked_ok
307
until this client is disabled
308
extended_timeout: extra long timeout when password has been sent
309
runtime_expansions: Allowed attributes for runtime expansion.
310
expires: datetime.datetime(); time (UTC) when a client will be
262
def _timedelta_to_milliseconds(td):
263
"Convert a datetime.timedelta() to milliseconds"
264
return ((td.days * 24 * 60 * 60 * 1000)
265
+ (td.seconds * 1000)
266
+ (td.microseconds // 1000))
314
runtime_expansions = ("approval_delay", "approval_duration",
315
"created", "enabled", "fingerprint",
316
"host", "interval", "last_checked_ok",
317
"last_enabled", "name", "timeout")
268
319
def timeout_milliseconds(self):
269
320
"Return the 'timeout' attribute in milliseconds"
270
return self._timedelta_to_milliseconds(self.timeout)
321
return _timedelta_to_milliseconds(self.timeout)
323
def extended_timeout_milliseconds(self):
324
"Return the 'extended_timeout' attribute in milliseconds"
325
return _timedelta_to_milliseconds(self.extended_timeout)
272
327
def interval_milliseconds(self):
273
328
"Return the 'interval' attribute in milliseconds"
274
return self._timedelta_to_milliseconds(self.interval)
329
return _timedelta_to_milliseconds(self.interval)
331
def approval_delay_milliseconds(self):
332
return _timedelta_to_milliseconds(self.approval_delay)
276
334
def __init__(self, name = None, disable_hook=None, config=None):
277
335
"""Note: the 'checker' key in 'config' sets the
281
339
if config is None:
283
logger.debug(u"Creating client %r", self.name)
341
logger.debug("Creating client %r", self.name)
284
342
# Uppercase and remove spaces from fingerprint for later
285
343
# 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"])),
345
self.fingerprint = (config["fingerprint"].upper()
347
logger.debug(" Fingerprint: %s", self.fingerprint)
348
if "secret" in config:
349
self.secret = config["secret"].decode("base64")
350
elif "secfile" in config:
351
with open(os.path.expanduser(os.path.expandvars
352
(config["secfile"])),
297
354
self.secret = secfile.read()
299
raise TypeError(u"No secret or secfile for client %s"
356
raise TypeError("No secret or secfile for client %s"
301
self.host = config.get(u"host", u"")
358
self.host = config.get("host", "")
302
359
self.created = datetime.datetime.utcnow()
303
360
self.enabled = False
361
self.last_approval_request = None
304
362
self.last_enabled = None
305
363
self.last_checked_ok = None
306
self.timeout = string_to_delta(config[u"timeout"])
307
self.interval = string_to_delta(config[u"interval"])
364
self.timeout = string_to_delta(config["timeout"])
365
self.extended_timeout = string_to_delta(config
366
["extended_timeout"])
367
self.interval = string_to_delta(config["interval"])
308
368
self.disable_hook = disable_hook
309
369
self.checker = None
310
370
self.checker_initiator_tag = None
311
371
self.disable_initiator_tag = None
312
373
self.checker_callback_tag = None
313
self.checker_command = config[u"checker"]
374
self.checker_command = config["checker"]
314
375
self.current_checker_command = None
315
376
self.last_connect = None
377
self._approved = None
378
self.approved_by_default = config.get("approved_by_default",
380
self.approvals_pending = 0
381
self.approval_delay = string_to_delta(
382
config["approval_delay"])
383
self.approval_duration = string_to_delta(
384
config["approval_duration"])
385
self.changedstate = (multiprocessing_manager
386
.Condition(multiprocessing_manager
389
def send_changedstate(self):
390
self.changedstate.acquire()
391
self.changedstate.notify_all()
392
self.changedstate.release()
317
394
def enable(self):
318
395
"""Start this client's checker and timeout hooks"""
319
if getattr(self, u"enabled", False):
396
if getattr(self, "enabled", False):
320
397
# Already enabled
322
self.last_enabled = datetime.datetime.utcnow()
399
self.send_changedstate()
323
400
# Schedule a new checker to be started an 'interval' from now,
324
401
# and every interval from then on.
325
402
self.checker_initiator_tag = (gobject.timeout_add
326
403
(self.interval_milliseconds(),
327
404
self.start_checker))
328
405
# Schedule a disable() when 'timeout' has passed
406
self.expires = datetime.datetime.utcnow() + self.timeout
329
407
self.disable_initiator_tag = (gobject.timeout_add
330
408
(self.timeout_milliseconds(),
332
410
self.enabled = True
411
self.last_enabled = datetime.datetime.utcnow()
333
412
# Also start a new checker *right now*.
334
413
self.start_checker()
463
553
if self.checker_callback_tag:
464
554
gobject.source_remove(self.checker_callback_tag)
465
555
self.checker_callback_tag = None
466
if getattr(self, u"checker", None) is None:
556
if getattr(self, "checker", None) is None:
468
logger.debug(u"Stopping checker for %(name)s", vars(self))
558
logger.debug("Stopping checker for %(name)s", vars(self))
470
560
os.kill(self.checker.pid, signal.SIGTERM)
472
562
#if self.checker.poll() is None:
473
563
# os.kill(self.checker.pid, signal.SIGKILL)
474
except OSError, error:
564
except OSError as error:
475
565
if error.errno != errno.ESRCH: # No such process
477
567
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):
570
def dbus_service_property(dbus_interface, signature="v",
571
access="readwrite", byte_arrays=False):
492
572
"""Decorators for marking methods of a DBusObjectWithProperties to
493
573
become properties on the D-Bus.
543
628
def _is_dbus_property(obj):
544
return getattr(obj, u"_dbus_is_property", False)
629
return getattr(obj, "_dbus_is_property", False)
546
631
def _get_all_dbus_properties(self):
547
632
"""Returns a generator of (name, attribute) pairs
549
return ((prop._dbus_name, prop)
634
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
635
for cls in self.__class__.__mro__
550
636
for name, prop in
551
inspect.getmembers(self, self._is_dbus_property))
637
inspect.getmembers(cls, self._is_dbus_property))
553
639
def _get_dbus_property(self, interface_name, property_name):
554
640
"""Returns a bound method if one exists which is a D-Bus
555
641
property with the specified name and interface.
557
for name in (property_name,
558
property_name + u"_dbus_property"):
559
prop = getattr(self, name, None)
561
or not self._is_dbus_property(prop)
562
or prop._dbus_name != property_name
563
or (interface_name and prop._dbus_interface
564
and interface_name != prop._dbus_interface)):
643
for cls in self.__class__.__mro__:
644
for name, value in (inspect.getmembers
645
(cls, self._is_dbus_property)):
646
if (value._dbus_name == property_name
647
and value._dbus_interface == interface_name):
648
return value.__get__(self)
567
650
# No such property
568
raise DBusPropertyNotFound(self.dbus_object_path + u":"
569
+ interface_name + u"."
651
raise DBusPropertyNotFound(self.dbus_object_path + ":"
652
+ interface_name + "."
572
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
655
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
574
657
def Get(self, interface_name, property_name):
575
658
"""Standard D-Bus property Get() method, see D-Bus standard.
577
660
prop = self._get_dbus_property(interface_name, property_name)
578
if prop._dbus_access == u"write":
661
if prop._dbus_access == "write":
579
662
raise DBusPropertyAccessException(property_name)
581
if not hasattr(value, u"variant_level"):
664
if not hasattr(value, "variant_level"):
583
666
return type(value)(value, variant_level=value.variant_level+1)
585
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
668
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
586
669
def Set(self, interface_name, property_name, value):
587
670
"""Standard D-Bus property Set() method, see D-Bus standard.
589
672
prop = self._get_dbus_property(interface_name, property_name)
590
if prop._dbus_access == u"read":
673
if prop._dbus_access == "read":
591
674
raise DBusPropertyAccessException(property_name)
592
if prop._dbus_get_args_options[u"byte_arrays"]:
675
if prop._dbus_get_args_options["byte_arrays"]:
676
# The byte_arrays option is not supported yet on
677
# signatures other than "ay".
678
if prop._dbus_signature != "ay":
593
680
value = dbus.ByteArray(''.join(unichr(byte)
594
681
for byte in value))
597
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
598
out_signature=u"a{sv}")
684
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
685
out_signature="a{sv}")
599
686
def GetAll(self, interface_name):
600
687
"""Standard D-Bus property GetAll() method, see D-Bus
603
690
Note: Will not include properties with access="write".
632
719
document = xml.dom.minidom.parseString(xmlstring)
633
720
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)
721
e = document.createElement("property")
722
e.setAttribute("name", name)
723
e.setAttribute("type", prop._dbus_signature)
724
e.setAttribute("access", prop._dbus_access)
639
for if_tag in document.getElementsByTagName(u"interface"):
726
for if_tag in document.getElementsByTagName("interface"):
640
727
for tag in (make_tag(document, name, prop)
642
729
in self._get_all_dbus_properties()
643
730
if prop._dbus_interface
644
== if_tag.getAttribute(u"name")):
731
== if_tag.getAttribute("name")):
645
732
if_tag.appendChild(tag)
646
733
# Add the names to the return values for the
647
734
# "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")
735
if (if_tag.getAttribute("name")
736
== "org.freedesktop.DBus.Properties"):
737
for cn in if_tag.getElementsByTagName("method"):
738
if cn.getAttribute("name") == "Get":
739
for arg in cn.getElementsByTagName("arg"):
740
if (arg.getAttribute("direction")
742
arg.setAttribute("name", "value")
743
elif cn.getAttribute("name") == "GetAll":
744
for arg in cn.getElementsByTagName("arg"):
745
if (arg.getAttribute("direction")
747
arg.setAttribute("name", "props")
748
xmlstring = document.toxml("utf-8")
662
749
document.unlink()
663
750
except (AttributeError, xml.dom.DOMException,
664
xml.parsers.expat.ExpatError), error:
665
logger.error(u"Failed to override Introspection method",
751
xml.parsers.expat.ExpatError) as error:
752
logger.error("Failed to override Introspection method",
757
def datetime_to_dbus (dt, variant_level=0):
758
"""Convert a UTC datetime.datetime() to a D-Bus type."""
760
return dbus.String("", variant_level = variant_level)
761
return dbus.String(dt.isoformat(),
762
variant_level=variant_level)
764
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
766
"""Applied to an empty subclass of a D-Bus object, this metaclass
767
will add additional D-Bus attributes matching a certain pattern.
769
def __new__(mcs, name, bases, attr):
770
# Go through all the base classes which could have D-Bus
771
# methods, signals, or properties in them
772
for base in (b for b in bases
773
if issubclass(b, dbus.service.Object)):
774
# Go though all attributes of the base class
775
for attrname, attribute in inspect.getmembers(base):
776
# Ignore non-D-Bus attributes, and D-Bus attributes
777
# with the wrong interface name
778
if (not hasattr(attribute, "_dbus_interface")
779
or not attribute._dbus_interface
780
.startswith("se.recompile.Mandos")):
782
# Create an alternate D-Bus interface name based on
784
alt_interface = (attribute._dbus_interface
785
.replace("se.recompile.Mandos",
786
"se.bsnet.fukt.Mandos"))
787
# Is this a D-Bus signal?
788
if getattr(attribute, "_dbus_is_signal", False):
789
# Extract the original non-method function by
791
nonmethod_func = (dict(
792
zip(attribute.func_code.co_freevars,
793
attribute.__closure__))["func"]
795
# Create a new, but exactly alike, function
796
# object, and decorate it to be a new D-Bus signal
797
# with the alternate D-Bus interface name
798
new_function = (dbus.service.signal
800
attribute._dbus_signature)
802
nonmethod_func.func_code,
803
nonmethod_func.func_globals,
804
nonmethod_func.func_name,
805
nonmethod_func.func_defaults,
806
nonmethod_func.func_closure)))
807
# Define a creator of a function to call both the
808
# old and new functions, so both the old and new
809
# signals gets sent when the function is called
810
def fixscope(func1, func2):
811
"""This function is a scope container to pass
812
func1 and func2 to the "call_both" function
813
outside of its arguments"""
814
def call_both(*args, **kwargs):
815
"""This function will emit two D-Bus
816
signals by calling func1 and func2"""
817
func1(*args, **kwargs)
818
func2(*args, **kwargs)
820
# Create the "call_both" function and add it to
822
attr[attrname] = fixscope(attribute,
824
# Is this a D-Bus method?
825
elif getattr(attribute, "_dbus_is_method", False):
826
# Create a new, but exactly alike, function
827
# object. Decorate it to be a new D-Bus method
828
# with the alternate D-Bus interface name. Add it
830
attr[attrname] = (dbus.service.method
832
attribute._dbus_in_signature,
833
attribute._dbus_out_signature)
835
(attribute.func_code,
836
attribute.func_globals,
838
attribute.func_defaults,
839
attribute.func_closure)))
840
# Is this a D-Bus property?
841
elif getattr(attribute, "_dbus_is_property", False):
842
# Create a new, but exactly alike, function
843
# object, and decorate it to be a new D-Bus
844
# property with the alternate D-Bus interface
845
# name. Add it to the class.
846
attr[attrname] = (dbus_service_property
848
attribute._dbus_signature,
849
attribute._dbus_access,
851
._dbus_get_args_options
854
(attribute.func_code,
855
attribute.func_globals,
857
attribute.func_defaults,
858
attribute.func_closure)))
859
return type.__new__(mcs, name, bases, attr)
670
861
class ClientDBus(Client, DBusObjectWithProperties):
671
862
"""A Client class using D-Bus
674
865
dbus_object_path: dbus.ObjectPath
675
866
bus: dbus.SystemBus()
869
runtime_expansions = (Client.runtime_expansions
870
+ ("dbus_object_path",))
677
872
# dbus.service.Object doesn't use super(), so we can't either.
679
874
def __init__(self, bus = None, *args, **kwargs):
875
self._approvals_pending = 0
681
877
Client.__init__(self, *args, **kwargs)
682
878
# Only now, when this client is initialized, can it show up on
880
client_object_name = unicode(self.name).translate(
684
883
self.dbus_object_path = (dbus.ObjectPath
686
+ self.name.replace(u".", u"_")))
884
("/clients/" + client_object_name))
687
885
DBusObjectWithProperties.__init__(self, self.bus,
688
886
self.dbus_object_path)
691
def _datetime_to_dbus(dt, variant_level=0):
692
"""Convert a UTC datetime.datetime() to a D-Bus type."""
693
return dbus.String(dt.isoformat(),
694
variant_level=variant_level)
697
oldstate = getattr(self, u"enabled", False)
698
r = Client.enable(self)
699
if oldstate != self.enabled:
701
self.PropertyChanged(dbus.String(u"enabled"),
702
dbus.Boolean(True, variant_level=1))
703
self.PropertyChanged(
704
dbus.String(u"last_enabled"),
705
self._datetime_to_dbus(self.last_enabled,
709
def disable(self, quiet = False):
710
oldstate = getattr(self, u"enabled", False)
711
r = Client.disable(self, log=signal)
712
if not quiet and oldstate != self.enabled:
714
self.PropertyChanged(dbus.String(u"enabled"),
715
dbus.Boolean(False, variant_level=1))
888
def notifychangeproperty(transform_func,
889
dbus_name, type_func=lambda x: x,
891
""" Modify a variable so that it's a property which announces
894
transform_fun: Function that takes a value and transforms it
896
dbus_name: D-Bus name of the variable
897
type_func: Function that transform the value before sending it
898
to the D-Bus. Default: no transform
899
variant_level: D-Bus variant level. Default: 1
902
def setter(self, value):
903
old_value = real_value[0]
904
real_value[0] = value
905
if hasattr(self, "dbus_object_path"):
906
if type_func(old_value) != type_func(real_value[0]):
907
dbus_value = transform_func(type_func
910
self.PropertyChanged(dbus.String(dbus_name),
913
return property(lambda self: real_value[0], setter)
916
expires = notifychangeproperty(datetime_to_dbus, "Expires")
917
approvals_pending = notifychangeproperty(dbus.Boolean,
920
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
921
last_enabled = notifychangeproperty(datetime_to_dbus,
923
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
924
type_func = lambda checker:
926
last_checked_ok = notifychangeproperty(datetime_to_dbus,
928
last_approval_request = notifychangeproperty(
929
datetime_to_dbus, "LastApprovalRequest")
930
approved_by_default = notifychangeproperty(dbus.Boolean,
932
approval_delay = notifychangeproperty(dbus.UInt16,
935
_timedelta_to_milliseconds)
936
approval_duration = notifychangeproperty(
937
dbus.UInt16, "ApprovalDuration",
938
type_func = _timedelta_to_milliseconds)
939
host = notifychangeproperty(dbus.String, "Host")
940
timeout = notifychangeproperty(dbus.UInt16, "Timeout",
942
_timedelta_to_milliseconds)
943
extended_timeout = notifychangeproperty(
944
dbus.UInt16, "ExtendedTimeout",
945
type_func = _timedelta_to_milliseconds)
946
interval = notifychangeproperty(dbus.UInt16,
949
_timedelta_to_milliseconds)
950
checker_command = notifychangeproperty(dbus.String, "Checker")
952
del notifychangeproperty
718
954
def __del__(self, *args, **kwargs):
720
956
self.remove_from_connection()
721
957
except LookupError:
723
if hasattr(DBusObjectWithProperties, u"__del__"):
959
if hasattr(DBusObjectWithProperties, "__del__"):
724
960
DBusObjectWithProperties.__del__(self, *args, **kwargs)
725
961
Client.__del__(self, *args, **kwargs)
767
991
and old_checker_pid != self.checker.pid):
768
992
# Emit D-Bus signal
769
993
self.CheckerStarted(self.current_checker_command)
770
self.PropertyChanged(
771
dbus.String(u"checker_running"),
772
dbus.Boolean(True, variant_level=1))
775
def stop_checker(self, *args, **kwargs):
776
old_checker = getattr(self, u"checker", None)
777
r = Client.stop_checker(self, *args, **kwargs)
778
if (old_checker is not None
779
and getattr(self, u"checker", None) is None):
780
self.PropertyChanged(dbus.String(u"checker_running"),
781
dbus.Boolean(False, variant_level=1))
784
## D-Bus methods & signals
785
_interface = u"se.bsnet.fukt.Mandos.Client"
788
@dbus.service.method(_interface)
790
return self.checked_ok()
996
def _reset_approved(self):
997
self._approved = None
1000
def approve(self, value=True):
1001
self.send_changedstate()
1002
self._approved = value
1003
gobject.timeout_add(_timedelta_to_milliseconds
1004
(self.approval_duration),
1005
self._reset_approved)
1008
## D-Bus methods, signals & properties
1009
_interface = "se.recompile.Mandos.Client"
792
1013
# CheckerCompleted - signal
793
@dbus.service.signal(_interface, signature=u"nxs")
1014
@dbus.service.signal(_interface, signature="nxs")
794
1015
def CheckerCompleted(self, exitcode, waitstatus, command):
798
1019
# CheckerStarted - signal
799
@dbus.service.signal(_interface, signature=u"s")
1020
@dbus.service.signal(_interface, signature="s")
800
1021
def CheckerStarted(self, command):
804
1025
# PropertyChanged - signal
805
@dbus.service.signal(_interface, signature=u"sv")
1026
@dbus.service.signal(_interface, signature="sv")
806
1027
def PropertyChanged(self, property, value):
842
1084
def StopChecker(self):
843
1085
self.stop_checker()
846
@dbus_service_property(_interface, signature=u"s", access=u"read")
847
def name_dbus_property(self):
1089
# ApprovalPending - property
1090
@dbus_service_property(_interface, signature="b", access="read")
1091
def ApprovalPending_dbus_property(self):
1092
return dbus.Boolean(bool(self.approvals_pending))
1094
# ApprovedByDefault - property
1095
@dbus_service_property(_interface, signature="b",
1097
def ApprovedByDefault_dbus_property(self, value=None):
1098
if value is None: # get
1099
return dbus.Boolean(self.approved_by_default)
1100
self.approved_by_default = bool(value)
1102
# ApprovalDelay - property
1103
@dbus_service_property(_interface, signature="t",
1105
def ApprovalDelay_dbus_property(self, value=None):
1106
if value is None: # get
1107
return dbus.UInt64(self.approval_delay_milliseconds())
1108
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1110
# ApprovalDuration - property
1111
@dbus_service_property(_interface, signature="t",
1113
def ApprovalDuration_dbus_property(self, value=None):
1114
if value is None: # get
1115
return dbus.UInt64(_timedelta_to_milliseconds(
1116
self.approval_duration))
1117
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1120
@dbus_service_property(_interface, signature="s", access="read")
1121
def Name_dbus_property(self):
848
1122
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):
1124
# Fingerprint - property
1125
@dbus_service_property(_interface, signature="s", access="read")
1126
def Fingerprint_dbus_property(self):
853
1127
return dbus.String(self.fingerprint)
856
@dbus_service_property(_interface, signature=u"s",
858
def host_dbus_property(self, value=None):
1130
@dbus_service_property(_interface, signature="s",
1132
def Host_dbus_property(self, value=None):
859
1133
if value is None: # get
860
1134
return dbus.String(self.host)
861
1135
self.host = value
863
self.PropertyChanged(dbus.String(u"host"),
864
dbus.String(value, variant_level=1))
867
@dbus_service_property(_interface, signature=u"s", access=u"read")
868
def created_dbus_property(self):
869
return dbus.String(self._datetime_to_dbus(self.created))
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))
879
@dbus_service_property(_interface, signature=u"b",
881
def enabled_dbus_property(self, value=None):
1137
# Created - property
1138
@dbus_service_property(_interface, signature="s", access="read")
1139
def Created_dbus_property(self):
1140
return dbus.String(datetime_to_dbus(self.created))
1142
# LastEnabled - property
1143
@dbus_service_property(_interface, signature="s", access="read")
1144
def LastEnabled_dbus_property(self):
1145
return datetime_to_dbus(self.last_enabled)
1147
# Enabled - property
1148
@dbus_service_property(_interface, signature="b",
1150
def Enabled_dbus_property(self, value=None):
882
1151
if value is None: # get
883
1152
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):
1158
# LastCheckedOK - property
1159
@dbus_service_property(_interface, signature="s",
1161
def LastCheckedOK_dbus_property(self, value=None):
893
1162
if value is not None:
894
1163
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):
1165
return datetime_to_dbus(self.last_checked_ok)
1167
# Expires - property
1168
@dbus_service_property(_interface, signature="s", access="read")
1169
def Expires_dbus_property(self):
1170
return datetime_to_dbus(self.expires)
1172
# LastApprovalRequest - property
1173
@dbus_service_property(_interface, signature="s", access="read")
1174
def LastApprovalRequest_dbus_property(self):
1175
return datetime_to_dbus(self.last_approval_request)
1177
# Timeout - property
1178
@dbus_service_property(_interface, signature="t",
1180
def Timeout_dbus_property(self, value=None):
905
1181
if value is None: # get
906
1182
return dbus.UInt64(self.timeout_milliseconds())
907
1183
self.timeout = datetime.timedelta(0, 0, 0, value)
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:
1184
if getattr(self, "disable_initiator_tag", None) is None:
913
1186
# Reschedule timeout
914
1187
gobject.source_remove(self.disable_initiator_tag)
915
1188
self.disable_initiator_tag = None
916
1190
time_to_die = (self.
917
1191
_timedelta_to_milliseconds((self
918
1192
.last_checked_ok
923
1197
# The timeout has passed
1200
self.expires = (datetime.datetime.utcnow()
1201
+ datetime.timedelta(milliseconds =
926
1203
self.disable_initiator_tag = (gobject.timeout_add
927
1204
(time_to_die, self.disable))
929
# interval - property
930
@dbus_service_property(_interface, signature=u"t",
932
def interval_dbus_property(self, value=None):
1206
# ExtendedTimeout - property
1207
@dbus_service_property(_interface, signature="t",
1209
def ExtendedTimeout_dbus_property(self, value=None):
1210
if value is None: # get
1211
return dbus.UInt64(self.extended_timeout_milliseconds())
1212
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1214
# Interval - property
1215
@dbus_service_property(_interface, signature="t",
1217
def Interval_dbus_property(self, value=None):
933
1218
if value is None: # get
934
1219
return dbus.UInt64(self.interval_milliseconds())
935
1220
self.interval = datetime.timedelta(0, 0, 0, value)
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:
1221
if getattr(self, "checker_initiator_tag", None) is None:
941
1223
# Reschedule checker run
942
1224
gobject.source_remove(self.checker_initiator_tag)
943
1225
self.checker_initiator_tag = (gobject.timeout_add
944
1226
(value, self.start_checker))
945
1227
self.start_checker() # Start one now, too
948
@dbus_service_property(_interface, signature=u"s",
950
def checker_dbus_property(self, value=None):
1229
# Checker - property
1230
@dbus_service_property(_interface, signature="s",
1232
def Checker_dbus_property(self, value=None):
951
1233
if value is None: # get
952
1234
return dbus.String(self.checker_command)
953
1235
self.checker_command = value
955
self.PropertyChanged(dbus.String(u"checker"),
956
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):
1237
# CheckerRunning - property
1238
@dbus_service_property(_interface, signature="b",
1240
def CheckerRunning_dbus_property(self, value=None):
963
1241
if value is None: # get
964
1242
return dbus.Boolean(self.checker is not None)
968
1246
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):
1248
# ObjectPath - property
1249
@dbus_service_property(_interface, signature="o", access="read")
1250
def ObjectPath_dbus_property(self):
973
1251
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):
1254
@dbus_service_property(_interface, signature="ay",
1255
access="write", byte_arrays=True)
1256
def Secret_dbus_property(self, value):
979
1257
self.secret = str(value)
1262
class ProxyClient(object):
1263
def __init__(self, child_pipe, fpr, address):
1264
self._pipe = child_pipe
1265
self._pipe.send(('init', fpr, address))
1266
if not self._pipe.recv():
1269
def __getattribute__(self, name):
1270
if(name == '_pipe'):
1271
return super(ProxyClient, self).__getattribute__(name)
1272
self._pipe.send(('getattr', name))
1273
data = self._pipe.recv()
1274
if data[0] == 'data':
1276
if data[0] == 'function':
1277
def func(*args, **kwargs):
1278
self._pipe.send(('funcall', name, args, kwargs))
1279
return self._pipe.recv()[1]
1282
def __setattr__(self, name, value):
1283
if(name == '_pipe'):
1284
return super(ProxyClient, self).__setattr__(name, value)
1285
self._pipe.send(('setattr', name, value))
1287
class ClientDBusTransitional(ClientDBus):
1288
__metaclass__ = AlternateDBusNamesMetaclass
984
1290
class ClientHandler(socketserver.BaseRequestHandler, object):
985
1291
"""A class to handle client connections.
988
1294
Note: This will run in its own forked process."""
990
1296
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:
1297
with contextlib.closing(self.server.child_pipe) as child_pipe:
1298
logger.info("TCP connection from: %s",
1299
unicode(self.client_address))
1300
logger.debug("Pipe FD: %d",
1301
self.server.child_pipe.fileno())
996
1303
session = (gnutls.connection
997
1304
.ClientSession(self.request,
998
1305
gnutls.connection
999
1306
.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
1308
# Note: gnutls.connection.X509Credentials is really a
1011
1309
# generic GnuTLS certificate credentials object so long as
1012
1310
# no X.509 keys are added to it. Therefore, we can use it
1013
1311
# 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",
1313
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1314
# "+AES-256-CBC", "+SHA1",
1315
# "+COMP-NULL", "+CTYPE-OPENPGP",
1019
1317
# Use a fallback default, since this MUST be set.
1020
1318
priority = self.server.gnutls_priority
1021
1319
if priority is None:
1022
priority = u"NORMAL"
1023
1321
(gnutls.library.functions
1024
1322
.gnutls_priority_set_direct(session._c_object,
1025
1323
priority, None))
1325
# Start communication using the Mandos protocol
1326
# Get protocol number
1327
line = self.request.makefile().readline()
1328
logger.debug("Protocol version: %r", line)
1330
if int(line.strip().split()[0]) > 1:
1332
except (ValueError, IndexError, RuntimeError) as error:
1333
logger.error("Unknown protocol version: %s", error)
1336
# Start GnuTLS connection
1028
1338
session.handshake()
1029
except gnutls.errors.GNUTLSError, error:
1030
logger.warning(u"Handshake failed: %s", error)
1339
except gnutls.errors.GNUTLSError as error:
1340
logger.warning("Handshake failed: %s", error)
1031
1341
# Do not run session.bye() here: the session is not
1032
1342
# established. Just abandon the request.
1034
logger.debug(u"Handshake succeeded")
1344
logger.debug("Handshake succeeded")
1346
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)
1349
fpr = self.fingerprint(self.peer_certificate
1352
gnutls.errors.GNUTLSError) as error:
1353
logger.warning("Bad certificate: %s", error)
1355
logger.debug("Fingerprint: %s", fpr)
1358
client = ProxyClient(child_pipe, fpr,
1359
self.client_address)
1363
if client.approval_delay:
1364
delay = client.approval_delay
1365
client.approvals_pending += 1
1366
approval_required = True
1369
if not client.enabled:
1370
logger.info("Client %s is disabled",
1372
if self.server.use_dbus:
1374
client.Rejected("Disabled")
1377
if client._approved or not client.approval_delay:
1378
#We are approved or approval is disabled
1380
elif client._approved is None:
1381
logger.info("Client %s needs approval",
1383
if self.server.use_dbus:
1385
client.NeedApproval(
1386
client.approval_delay_milliseconds(),
1387
client.approved_by_default)
1389
logger.warning("Client %s was not approved",
1391
if self.server.use_dbus:
1393
client.Rejected("Denied")
1396
#wait until timeout or approved
1398
# ._timedelta_to_milliseconds(delay))
1399
time = datetime.datetime.now()
1400
client.changedstate.acquire()
1401
(client.changedstate.wait
1402
(float(client._timedelta_to_milliseconds(delay)
1404
client.changedstate.release()
1405
time2 = datetime.datetime.now()
1406
if (time2 - time) >= delay:
1407
if not client.approved_by_default:
1408
logger.warning("Client %s timed out while"
1409
" waiting for approval",
1411
if self.server.use_dbus:
1413
client.Rejected("Approval timed out")
1418
delay -= time2 - time
1421
while sent_size < len(client.secret):
1423
sent = session.send(client.secret[sent_size:])
1424
except gnutls.errors.GNUTLSError as error:
1425
logger.warning("gnutls send failed")
1427
logger.debug("Sent: %d, remaining: %d",
1428
sent, len(client.secret)
1429
- (sent_size + sent))
1432
logger.info("Sending secret to %s", client.name)
1433
# bump the timeout as if seen
1434
client.checked_ok(client.extended_timeout)
1435
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))
1440
if approval_required:
1441
client.approvals_pending -= 1
1444
except gnutls.errors.GNUTLSError as error:
1445
logger.warning("GnuTLS bye failed")
1070
1448
def peer_certificate(session):
1126
1504
# Convert the buffer to a Python bytestring
1127
1505
fpr = ctypes.string_at(buf, buf_len.value)
1128
1506
# Convert the bytestring to hexadecimal notation
1129
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1507
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."""
1511
class MultiprocessingMixIn(object):
1512
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
1513
def sub_process_main(self, request, address):
1515
self.finish_request(request, address)
1517
self.handle_error(request, address)
1518
self.close_request(request)
1520
def process_request(self, request, address):
1521
"""Start a new process to process the request."""
1522
multiprocessing.Process(target = self.sub_process_main,
1523
args = (request, address)).start()
1526
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1527
""" adds a pipe to the MixIn """
1135
1528
def process_request(self, request, client_address):
1136
1529
"""Overrides and wraps the original process_request().
1138
1531
This function creates a new pipe in self.pipe
1140
self.pipe = os.pipe()
1141
super(ForkingMixInWithPipe,
1533
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1535
super(MultiprocessingMixInWithPipe,
1142
1536
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):
1537
self.child_pipe.close()
1538
self.add_pipe(parent_pipe)
1540
def add_pipe(self, parent_pipe):
1146
1541
"""Dummy function; override as necessary"""
1150
class IPv6_TCPServer(ForkingMixInWithPipe,
1542
raise NotImplementedError
1545
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1151
1546
socketserver.TCPServer, object):
1152
1547
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1238
1633
return socketserver.TCPServer.server_activate(self)
1239
1634
def enable(self):
1240
1635
self.enabled = True
1241
def add_pipe(self, pipe):
1636
def add_pipe(self, parent_pipe):
1242
1637
# 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={}):
1638
gobject.io_add_watch(parent_pipe.fileno(),
1639
gobject.IO_IN | gobject.IO_HUP,
1640
functools.partial(self.handle_ipc,
1644
def handle_ipc(self, source, condition, parent_pipe=None,
1645
client_object=None):
1246
1646
condition_names = {
1247
gobject.IO_IN: u"IN", # There is data to read.
1248
gobject.IO_OUT: u"OUT", # Data can be written (without
1647
gobject.IO_IN: "IN", # There is data to read.
1648
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
1650
gobject.IO_PRI: "PRI", # There is urgent data to read.
1651
gobject.IO_ERR: "ERR", # Error condition.
1652
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1253
1653
# broken, usually for pipes and
1257
1657
for cond, name in
1258
1658
condition_names.iteritems()
1259
1659
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
logger.warning(u"Client not found for fingerprint: %s",
1287
mandos_dbus_service.ClientNotFound(args)
1288
elif cmd == u"INVALID":
1289
for client in self.clients:
1290
if client.name == args:
1291
logger.warning(u"Client %s is invalid", args)
1297
logger.error(u"Unknown client %s is invalid", args)
1298
elif cmd == u"SENDING":
1299
for client in self.clients:
1300
if client.name == args:
1301
logger.info(u"Sending secret to %s", client.name)
1308
logger.error(u"Sending secret to unknown client %s",
1311
logger.error(u"Unknown IPC command: %r", cmdline)
1313
# Keep calling this function
1660
# error or the other end of multiprocessing.Pipe has closed
1661
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
1664
# Read a request from the child
1665
request = parent_pipe.recv()
1666
command = request[0]
1668
if command == 'init':
1670
address = request[2]
1672
for c in self.clients:
1673
if c.fingerprint == fpr:
1677
logger.info("Client not found for fingerprint: %s, ad"
1678
"dress: %s", fpr, address)
1681
mandos_dbus_service.ClientNotFound(fpr,
1683
parent_pipe.send(False)
1686
gobject.io_add_watch(parent_pipe.fileno(),
1687
gobject.IO_IN | gobject.IO_HUP,
1688
functools.partial(self.handle_ipc,
1693
parent_pipe.send(True)
1694
# remove the old hook in favor of the new above hook on
1697
if command == 'funcall':
1698
funcname = request[1]
1702
parent_pipe.send(('data', getattr(client_object,
1706
if command == 'getattr':
1707
attrname = request[1]
1708
if callable(client_object.__getattribute__(attrname)):
1709
parent_pipe.send(('function',))
1711
parent_pipe.send(('data', client_object
1712
.__getattribute__(attrname)))
1714
if command == 'setattr':
1715
attrname = request[1]
1717
setattr(client_object, attrname, value)
1317
1722
def string_to_delta(interval):
1318
1723
"""Parse a string and return a datetime.timedelta
1320
>>> string_to_delta(u'7d')
1725
>>> string_to_delta('7d')
1321
1726
datetime.timedelta(7)
1322
>>> string_to_delta(u'60s')
1727
>>> string_to_delta('60s')
1323
1728
datetime.timedelta(0, 60)
1324
>>> string_to_delta(u'60m')
1729
>>> string_to_delta('60m')
1325
1730
datetime.timedelta(0, 3600)
1326
>>> string_to_delta(u'24h')
1731
>>> string_to_delta('24h')
1327
1732
datetime.timedelta(1)
1328
>>> string_to_delta(u'1w')
1733
>>> string_to_delta('1w')
1329
1734
datetime.timedelta(7)
1330
>>> string_to_delta(u'5m 30s')
1735
>>> string_to_delta('5m 30s')
1331
1736
datetime.timedelta(0, 330)
1333
1738
timevalue = datetime.timedelta(0)
1407
1812
##################################################################
1408
1813
# Parsing of options, both command line and config file
1410
parser = optparse.OptionParser(version = "%%prog %s" % version)
1411
parser.add_option("-i", u"--interface", type=u"string",
1412
metavar="IF", help=u"Bind to interface IF")
1413
parser.add_option("-a", u"--address", type=u"string",
1414
help=u"Address to listen for requests on")
1415
parser.add_option("-p", u"--port", type=u"int",
1416
help=u"Port number to receive requests on")
1417
parser.add_option("--check", action=u"store_true",
1418
help=u"Run self-test")
1419
parser.add_option("--debug", action=u"store_true",
1420
help=u"Debug mode; run in foreground and log to"
1422
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1423
u" priority string (see GnuTLS documentation)")
1424
parser.add_option("--servicename", type=u"string",
1425
metavar=u"NAME", help=u"Zeroconf service name")
1426
parser.add_option("--configdir", type=u"string",
1427
default=u"/etc/mandos", metavar=u"DIR",
1428
help=u"Directory to search for configuration"
1430
parser.add_option("--no-dbus", action=u"store_false",
1431
dest=u"use_dbus", help=u"Do not provide D-Bus"
1432
u" system bus interface")
1433
parser.add_option("--no-ipv6", action=u"store_false",
1434
dest=u"use_ipv6", help=u"Do not use IPv6")
1435
options = parser.parse_args()[0]
1815
parser = argparse.ArgumentParser()
1816
parser.add_argument("-v", "--version", action="version",
1817
version = "%%(prog)s %s" % version,
1818
help="show version number and exit")
1819
parser.add_argument("-i", "--interface", metavar="IF",
1820
help="Bind to interface IF")
1821
parser.add_argument("-a", "--address",
1822
help="Address to listen for requests on")
1823
parser.add_argument("-p", "--port", type=int,
1824
help="Port number to receive requests on")
1825
parser.add_argument("--check", action="store_true",
1826
help="Run self-test")
1827
parser.add_argument("--debug", action="store_true",
1828
help="Debug mode; run in foreground and log"
1830
parser.add_argument("--debuglevel", metavar="LEVEL",
1831
help="Debug level for stdout output")
1832
parser.add_argument("--priority", help="GnuTLS"
1833
" priority string (see GnuTLS documentation)")
1834
parser.add_argument("--servicename",
1835
metavar="NAME", help="Zeroconf service name")
1836
parser.add_argument("--configdir",
1837
default="/etc/mandos", metavar="DIR",
1838
help="Directory to search for configuration"
1840
parser.add_argument("--no-dbus", action="store_false",
1841
dest="use_dbus", help="Do not provide D-Bus"
1842
" system bus interface")
1843
parser.add_argument("--no-ipv6", action="store_false",
1844
dest="use_ipv6", help="Do not use IPv6")
1845
options = parser.parse_args()
1437
1847
if options.check:
1442
1852
# Default values for config file for server-global settings
1443
server_defaults = { u"interface": u"",
1448
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1449
u"servicename": u"Mandos",
1450
u"use_dbus": u"True",
1451
u"use_ipv6": u"True",
1853
server_defaults = { "interface": "",
1858
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1859
"servicename": "Mandos",
1454
1865
# Parse config file for server-global settings
1455
1866
server_config = configparser.SafeConfigParser(server_defaults)
1456
1867
del server_defaults
1457
1868
server_config.read(os.path.join(options.configdir,
1459
1870
# Convert the SafeConfigParser object to a dict
1460
1871
server_settings = server_config.defaults()
1461
1872
# Use the appropriate methods on the non-string config options
1462
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1463
server_settings[option] = server_config.getboolean(u"DEFAULT",
1873
for option in ("debug", "use_dbus", "use_ipv6"):
1874
server_settings[option] = server_config.getboolean("DEFAULT",
1465
1876
if server_settings["port"]:
1466
server_settings["port"] = server_config.getint(u"DEFAULT",
1877
server_settings["port"] = server_config.getint("DEFAULT",
1468
1879
del server_config
1470
1881
# Override the settings from the config file with command line
1471
1882
# options, if set.
1472
for option in (u"interface", u"address", u"port", u"debug",
1473
u"priority", u"servicename", u"configdir",
1474
u"use_dbus", u"use_ipv6"):
1883
for option in ("interface", "address", "port", "debug",
1884
"priority", "servicename", "configdir",
1885
"use_dbus", "use_ipv6", "debuglevel"):
1475
1886
value = getattr(options, option)
1476
1887
if value is not None:
1477
1888
server_settings[option] = value
1485
1896
##################################################################
1487
1898
# For convenience
1488
debug = server_settings[u"debug"]
1489
use_dbus = server_settings[u"use_dbus"]
1490
use_ipv6 = server_settings[u"use_ipv6"]
1493
syslogger.setLevel(logging.WARNING)
1494
console.setLevel(logging.WARNING)
1496
if server_settings[u"servicename"] != u"Mandos":
1899
debug = server_settings["debug"]
1900
debuglevel = server_settings["debuglevel"]
1901
use_dbus = server_settings["use_dbus"]
1902
use_ipv6 = server_settings["use_ipv6"]
1904
if server_settings["servicename"] != "Mandos":
1497
1905
syslogger.setFormatter(logging.Formatter
1498
(u'Mandos (%s) [%%(process)d]:'
1499
u' %%(levelname)s: %%(message)s'
1500
% server_settings[u"servicename"]))
1906
('Mandos (%s) [%%(process)d]:'
1907
' %%(levelname)s: %%(message)s'
1908
% server_settings["servicename"]))
1502
1910
# Parse config file with clients
1503
client_defaults = { u"timeout": u"1h",
1505
u"checker": u"fping -q -- %%(host)s",
1911
client_defaults = { "timeout": "5m",
1912
"extended_timeout": "15m",
1914
"checker": "fping -q -- %%(host)s",
1916
"approval_delay": "0s",
1917
"approval_duration": "1s",
1508
1919
client_config = configparser.SafeConfigParser(client_defaults)
1509
client_config.read(os.path.join(server_settings[u"configdir"],
1920
client_config.read(os.path.join(server_settings["configdir"],
1512
1923
global mandos_dbus_service
1513
1924
mandos_dbus_service = None
1515
tcp_server = MandosServer((server_settings[u"address"],
1516
server_settings[u"port"]),
1926
tcp_server = MandosServer((server_settings["address"],
1927
server_settings["port"]),
1518
interface=server_settings[u"interface"],
1929
interface=(server_settings["interface"]
1519
1931
use_ipv6=use_ipv6,
1520
1932
gnutls_priority=
1521
server_settings[u"priority"],
1933
server_settings["priority"],
1522
1934
use_dbus=use_dbus)
1523
pidfilename = u"/var/run/mandos.pid"
1525
pidfile = open(pidfilename, u"w")
1527
logger.error(u"Could not open file %r", pidfilename)
1936
pidfilename = "/var/run/mandos.pid"
1938
pidfile = open(pidfilename, "w")
1940
logger.error("Could not open file %r", pidfilename)
1530
uid = pwd.getpwnam(u"_mandos").pw_uid
1531
gid = pwd.getpwnam(u"_mandos").pw_gid
1943
uid = pwd.getpwnam("_mandos").pw_uid
1944
gid = pwd.getpwnam("_mandos").pw_gid
1532
1945
except KeyError:
1534
uid = pwd.getpwnam(u"mandos").pw_uid
1535
gid = pwd.getpwnam(u"mandos").pw_gid
1947
uid = pwd.getpwnam("mandos").pw_uid
1948
gid = pwd.getpwnam("mandos").pw_gid
1536
1949
except KeyError:
1538
uid = pwd.getpwnam(u"nobody").pw_uid
1539
gid = pwd.getpwnam(u"nobody").pw_gid
1951
uid = pwd.getpwnam("nobody").pw_uid
1952
gid = pwd.getpwnam("nobody").pw_gid
1540
1953
except KeyError:
1546
except OSError, error:
1959
except OSError as error:
1547
1960
if error[0] != errno.EPERM:
1550
# Enable all possible GnuTLS debugging
1963
if not debug and not debuglevel:
1964
syslogger.setLevel(logging.WARNING)
1965
console.setLevel(logging.WARNING)
1967
level = getattr(logging, debuglevel.upper())
1968
syslogger.setLevel(level)
1969
console.setLevel(level)
1972
# Enable all possible GnuTLS debugging
1552
1974
# "Use a log level over 10 to enable all debugging options."
1553
1975
# - GnuTLS manual
1554
1976
gnutls.library.functions.gnutls_global_set_log_level(11)
1556
1978
@gnutls.library.types.gnutls_log_func
1557
1979
def debug_gnutls(level, string):
1558
logger.debug(u"GnuTLS: %s", string[:-1])
1980
logger.debug("GnuTLS: %s", string[:-1])
1560
1982
(gnutls.library.functions
1561
1983
.gnutls_global_set_log_function(debug_gnutls))
1985
# Redirect stdin so all checkers get /dev/null
1986
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1987
os.dup2(null, sys.stdin.fileno())
1991
# No console logging
1992
logger.removeHandler(console)
1994
# Need to fork before connecting to D-Bus
1996
# Close all input and output, do double fork, etc.
1563
1999
global main_loop
1564
2000
# From the Avahi example code
1568
2004
# End of Avahi example code
1571
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
2007
bus_name = dbus.service.BusName("se.recompile.Mandos",
1572
2008
bus, do_not_queue=True)
1573
except dbus.exceptions.NameExistsException, e:
1574
logger.error(unicode(e) + u", disabling D-Bus")
2009
old_bus_name = (dbus.service.BusName
2010
("se.bsnet.fukt.Mandos", bus,
2012
except dbus.exceptions.NameExistsException as e:
2013
logger.error(unicode(e) + ", disabling D-Bus")
1575
2014
use_dbus = False
1576
server_settings[u"use_dbus"] = False
2015
server_settings["use_dbus"] = False
1577
2016
tcp_server.use_dbus = False
1578
2017
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1579
service = AvahiService(name = server_settings[u"servicename"],
1580
servicetype = u"_mandos._tcp",
2018
service = AvahiService(name = server_settings["servicename"],
2019
servicetype = "_mandos._tcp",
1581
2020
protocol = protocol, bus = bus)
1582
2021
if server_settings["interface"]:
1583
2022
service.interface = (if_nametoindex
1584
(str(server_settings[u"interface"])))
2023
(str(server_settings["interface"])))
2025
global multiprocessing_manager
2026
multiprocessing_manager = multiprocessing.Manager()
1586
2028
client_class = Client
1588
client_class = functools.partial(ClientDBus, bus = bus)
2030
client_class = functools.partial(ClientDBusTransitional,
2032
def client_config_items(config, section):
2033
special_settings = {
2034
"approved_by_default":
2035
lambda: config.getboolean(section,
2036
"approved_by_default"),
2038
for name, value in config.items(section):
2040
yield (name, special_settings[name]())
1589
2044
tcp_server.clients.update(set(
1590
2045
client_class(name = section,
1591
config= dict(client_config.items(section)))
2046
config= dict(client_config_items(
2047
client_config, section)))
1592
2048
for section in client_config.sections()))
1593
2049
if not tcp_server.clients:
1594
logger.warning(u"No clients defined")
1597
# Redirect stdin so all checkers get /dev/null
1598
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1599
os.dup2(null, sys.stdin.fileno())
1603
# No console logging
1604
logger.removeHandler(console)
1605
# Close all input and output, do double fork, etc.
1609
with closing(pidfile):
1611
pidfile.write(str(pid) + "\n")
1614
logger.error(u"Could not write to file %r with PID %d",
1617
# "pidfile" was never created
2050
logger.warning("No clients defined")
2056
pidfile.write(str(pid) + "\n".encode("utf-8"))
2059
logger.error("Could not write to file %r with PID %d",
2062
# "pidfile" was never created
1622
2066
signal.signal(signal.SIGINT, signal.SIG_IGN)
1623
2068
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1624
2069
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1627
2072
class MandosDBusService(dbus.service.Object):
1628
2073
"""A D-Bus proxy object"""
1629
2074
def __init__(self):
1630
dbus.service.Object.__init__(self, bus, u"/")
1631
_interface = u"se.bsnet.fukt.Mandos"
1633
@dbus.service.signal(_interface, signature=u"oa{sv}")
1634
def ClientAdded(self, objpath, properties):
1638
@dbus.service.signal(_interface, signature=u"s")
1639
def ClientNotFound(self, fingerprint):
1643
@dbus.service.signal(_interface, signature=u"os")
2075
dbus.service.Object.__init__(self, bus, "/")
2076
_interface = "se.recompile.Mandos"
2078
@dbus.service.signal(_interface, signature="o")
2079
def ClientAdded(self, objpath):
2083
@dbus.service.signal(_interface, signature="ss")
2084
def ClientNotFound(self, fingerprint, address):
2088
@dbus.service.signal(_interface, signature="os")
1644
2089
def ClientRemoved(self, objpath, name):
1648
@dbus.service.method(_interface, out_signature=u"ao")
2093
@dbus.service.method(_interface, out_signature="ao")
1649
2094
def GetAllClients(self):
1651
2096
return dbus.Array(c.dbus_object_path
1652
2097
for c in tcp_server.clients)
1654
2099
@dbus.service.method(_interface,
1655
out_signature=u"a{oa{sv}}")
2100
out_signature="a{oa{sv}}")
1656
2101
def GetAllClientsWithProperties(self):
1658
2103
return dbus.Dictionary(
1659
((c.dbus_object_path, c.GetAll(u""))
2104
((c.dbus_object_path, c.GetAll(""))
1660
2105
for c in tcp_server.clients),
1661
signature=u"oa{sv}")
1663
@dbus.service.method(_interface, in_signature=u"o")
2108
@dbus.service.method(_interface, in_signature="o")
1664
2109
def RemoveClient(self, object_path):
1666
2111
for c in tcp_server.clients: