148
140
self.rename_count = 0
149
141
self.max_renames = max_renames
150
142
self.protocol = protocol
151
self.group = None # our entry group
154
self.entry_group_state_changed_match = None
155
143
def rename(self):
156
144
"""Derived from the Avahi example code"""
157
145
if self.rename_count >= self.max_renames:
158
logger.critical("No suitable Zeroconf service name found"
159
" after %i retries, exiting.",
146
logger.critical(u"No suitable Zeroconf service name found"
147
u" after %i retries, exiting.",
160
148
self.rename_count)
161
raise AvahiServiceError("Too many renames")
162
self.name = unicode(self.server.GetAlternativeServiceName(self.name))
163
logger.info("Changing Zeroconf service name to %r ...",
149
raise AvahiServiceError(u"Too many renames")
150
self.name = server.GetAlternativeServiceName(self.name)
151
logger.info(u"Changing Zeroconf service name to %r ...",
165
153
syslogger.setFormatter(logging.Formatter
166
('Mandos (%s) [%%(process)d]:'
167
' %%(levelname)s: %%(message)s'
154
(u'Mandos (%s) [%%(process)d]:'
155
u' %%(levelname)s: %%(message)s'
172
except dbus.exceptions.DBusException as error:
173
logger.critical("DBusException: %s", error)
176
159
self.rename_count += 1
177
160
def remove(self):
178
161
"""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
182
if self.group is not None:
162
if group is not None:
185
165
"""Derived from the Avahi example code"""
187
if self.group is None:
188
self.group = dbus.Interface(
189
self.bus.get_object(avahi.DBUS_NAME,
190
self.server.EntryGroupNew()),
191
avahi.DBUS_INTERFACE_ENTRY_GROUP)
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' ...",
196
self.name, self.type)
197
self.group.AddService(
200
dbus.UInt32(0), # flags
201
self.name, self.type,
202
self.domain, self.host,
203
dbus.UInt16(self.port),
204
avahi.string_array_to_txt_array(self.TXT))
206
def entry_group_state_changed(self, state, error):
207
"""Derived from the Avahi example code"""
208
logger.debug("Avahi entry group state change: %i", state)
210
if state == avahi.ENTRY_GROUP_ESTABLISHED:
211
logger.debug("Zeroconf service established.")
212
elif state == avahi.ENTRY_GROUP_COLLISION:
213
logger.info("Zeroconf service name collision.")
215
elif state == avahi.ENTRY_GROUP_FAILURE:
216
logger.critical("Avahi: Error in group state changed %s",
218
raise AvahiGroupError("State changed: %s"
221
"""Derived from the Avahi example code"""
222
if self.group is not None:
225
except (dbus.exceptions.UnknownMethodException,
226
dbus.exceptions.DBusException) as e:
230
def server_state_changed(self, state, error=None):
231
"""Derived from the Avahi example code"""
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)
247
elif state == avahi.SERVER_RUNNING:
251
logger.debug("Unknown state: %r", state)
253
logger.debug("Unknown state: %r: %r", state, error)
255
"""Derived from the Avahi example code"""
256
if self.server is None:
257
self.server = dbus.Interface(
258
self.bus.get_object(avahi.DBUS_NAME,
259
avahi.DBUS_PATH_SERVER,
260
follow_name_owner_changes=True),
261
avahi.DBUS_INTERFACE_SERVER)
262
self.server.connect_to_signal("StateChanged",
263
self.server_state_changed)
264
self.server_state_changed(self.server.GetState())
267
def _timedelta_to_milliseconds(td):
268
"Convert a datetime.timedelta() to milliseconds"
269
return ((td.days * 24 * 60 * 60 * 1000)
270
+ (td.seconds * 1000)
271
+ (td.microseconds // 1000))
168
group = dbus.Interface(bus.get_object
170
server.EntryGroupNew()),
171
avahi.DBUS_INTERFACE_ENTRY_GROUP)
172
group.connect_to_signal('StateChanged',
173
entry_group_state_changed)
174
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
175
service.name, service.type)
177
self.interface, # interface
178
self.protocol, # protocol
179
dbus.UInt32(0), # flags
180
self.name, self.type,
181
self.domain, self.host,
182
dbus.UInt16(self.port),
183
avahi.string_array_to_txt_array(self.TXT))
186
# From the Avahi example code:
187
group = None # our entry group
188
# End of Avahi example code
191
def _datetime_to_dbus(dt, variant_level=0):
192
"""Convert a UTC datetime.datetime() to a D-Bus type."""
193
return dbus.String(dt.isoformat(), variant_level=variant_level)
273
196
class Client(object):
274
197
"""A representation of a client host served by this server.
277
_approved: bool(); 'None' if not yet approved/disapproved
278
approval_delay: datetime.timedelta(); Time to wait for approval
279
approval_duration: datetime.timedelta(); Duration of one approval
200
name: string; from the config file, used in log messages and
202
fingerprint: string (40 or 32 hexadecimal digits); used to
203
uniquely identify the client
204
secret: bytestring; sent verbatim (over TLS) to client
205
host: string; available for use by the checker command
206
created: datetime.datetime(); (UTC) object creation
207
last_enabled: datetime.datetime(); (UTC)
209
last_checked_ok: datetime.datetime(); (UTC) or None
210
timeout: datetime.timedelta(); How long from last_checked_ok
211
until this client is invalid
212
interval: datetime.timedelta(); How often to start a new checker
213
disable_hook: If set, called by disable() as disable_hook(self)
280
214
checker: subprocess.Popen(); a running checker process used
281
215
to see if the client lives.
282
216
'None' if no process is running.
283
checker_callback_tag: a gobject event source tag, or None
284
checker_command: string; External command which is run to check
285
if client lives. %() expansions are done at
217
checker_initiator_tag: a gobject event source tag, or None
218
disable_initiator_tag: - '' -
219
checker_callback_tag: - '' -
220
checker_command: string; External command which is run to check if
221
client lives. %() expansions are done at
286
222
runtime with vars(self) as dict, so that for
287
223
instance %(name)s can be used in the command.
288
checker_initiator_tag: a gobject event source tag, or None
289
created: datetime.datetime(); (UTC) object creation
290
224
current_checker_command: string; current running checker_command
291
disable_hook: If set, called by disable() as disable_hook(self)
292
disable_initiator_tag: a gobject event source tag, or None
294
fingerprint: string (40 or 32 hexadecimal digits); used to
295
uniquely identify the client
296
host: string; available for use by the checker command
297
interval: datetime.timedelta(); How often to start a new checker
298
last_approval_request: datetime.datetime(); (UTC) or None
299
last_checked_ok: datetime.datetime(); (UTC) or None
300
last_enabled: datetime.datetime(); (UTC)
301
name: string; from the config file, used in log messages and
303
secret: bytestring; sent verbatim (over TLS) to client
304
timeout: datetime.timedelta(); How long from last_checked_ok
305
until this client is disabled
306
extended_timeout: extra long timeout when password has been sent
307
runtime_expansions: Allowed attributes for runtime expansion.
308
expires: datetime.datetime(); time (UTC) when a client will be
312
runtime_expansions = ("approval_delay", "approval_duration",
313
"created", "enabled", "fingerprint",
314
"host", "interval", "last_checked_ok",
315
"last_enabled", "name", "timeout")
228
def _datetime_to_milliseconds(dt):
229
"Convert a datetime.datetime() to milliseconds"
230
return ((dt.days * 24 * 60 * 60 * 1000)
231
+ (dt.seconds * 1000)
232
+ (dt.microseconds // 1000))
317
234
def timeout_milliseconds(self):
318
235
"Return the 'timeout' attribute in milliseconds"
319
return _timedelta_to_milliseconds(self.timeout)
321
def extended_timeout_milliseconds(self):
322
"Return the 'extended_timeout' attribute in milliseconds"
323
return _timedelta_to_milliseconds(self.extended_timeout)
236
return self._datetime_to_milliseconds(self.timeout)
325
238
def interval_milliseconds(self):
326
239
"Return the 'interval' attribute in milliseconds"
327
return _timedelta_to_milliseconds(self.interval)
329
def approval_delay_milliseconds(self):
330
return _timedelta_to_milliseconds(self.approval_delay)
240
return self._datetime_to_milliseconds(self.interval)
332
242
def __init__(self, name = None, disable_hook=None, config=None):
333
243
"""Note: the 'checker' key in 'config' sets the
337
247
if config is None:
339
logger.debug("Creating client %r", self.name)
249
logger.debug(u"Creating client %r", self.name)
340
250
# Uppercase and remove spaces from fingerprint for later
341
251
# comparison purposes with return value from the fingerprint()
343
self.fingerprint = (config["fingerprint"].upper()
345
logger.debug(" Fingerprint: %s", self.fingerprint)
346
if "secret" in config:
347
self.secret = config["secret"].decode("base64")
348
elif "secfile" in config:
349
with open(os.path.expanduser(os.path.expandvars
350
(config["secfile"])),
253
self.fingerprint = (config[u"fingerprint"].upper()
255
logger.debug(u" Fingerprint: %s", self.fingerprint)
256
if u"secret" in config:
257
self.secret = config[u"secret"].decode(u"base64")
258
elif u"secfile" in config:
259
with closing(open(os.path.expanduser
261
(config[u"secfile"])))) as secfile:
352
262
self.secret = secfile.read()
354
raise TypeError("No secret or secfile for client %s"
264
raise TypeError(u"No secret or secfile for client %s"
356
self.host = config.get("host", "")
266
self.host = config.get(u"host", u"")
357
267
self.created = datetime.datetime.utcnow()
358
268
self.enabled = False
359
self.last_approval_request = None
360
269
self.last_enabled = None
361
270
self.last_checked_ok = None
362
self.timeout = string_to_delta(config["timeout"])
363
self.extended_timeout = string_to_delta(config["extended_timeout"])
364
self.interval = string_to_delta(config["interval"])
271
self.timeout = string_to_delta(config[u"timeout"])
272
self.interval = string_to_delta(config[u"interval"])
365
273
self.disable_hook = disable_hook
366
274
self.checker = None
367
275
self.checker_initiator_tag = None
368
276
self.disable_initiator_tag = None
370
277
self.checker_callback_tag = None
371
self.checker_command = config["checker"]
278
self.checker_command = config[u"checker"]
372
279
self.current_checker_command = None
373
280
self.last_connect = None
374
self._approved = None
375
self.approved_by_default = config.get("approved_by_default",
377
self.approvals_pending = 0
378
self.approval_delay = string_to_delta(
379
config["approval_delay"])
380
self.approval_duration = string_to_delta(
381
config["approval_duration"])
382
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
384
def send_changedstate(self):
385
self.changedstate.acquire()
386
self.changedstate.notify_all()
387
self.changedstate.release()
389
282
def enable(self):
390
283
"""Start this client's checker and timeout hooks"""
391
if getattr(self, "enabled", False):
394
self.send_changedstate()
284
self.last_enabled = datetime.datetime.utcnow()
395
285
# Schedule a new checker to be started an 'interval' from now,
396
286
# and every interval from then on.
397
287
self.checker_initiator_tag = (gobject.timeout_add
398
288
(self.interval_milliseconds(),
399
289
self.start_checker))
290
# Also start a new checker *right now*.
400
292
# Schedule a disable() when 'timeout' has passed
401
self.expires = datetime.datetime.utcnow() + self.timeout
402
293
self.disable_initiator_tag = (gobject.timeout_add
403
294
(self.timeout_milliseconds(),
405
296
self.enabled = True
406
self.last_enabled = datetime.datetime.utcnow()
407
# Also start a new checker *right now*.
410
def disable(self, quiet=True):
411
299
"""Disable this client."""
412
300
if not getattr(self, "enabled", False):
415
self.send_changedstate()
417
logger.info("Disabling client %s", self.name)
418
if getattr(self, "disable_initiator_tag", False):
302
logger.info(u"Disabling client %s", self.name)
303
if getattr(self, u"disable_initiator_tag", False):
419
304
gobject.source_remove(self.disable_initiator_tag)
420
305
self.disable_initiator_tag = None
422
if getattr(self, "checker_initiator_tag", False):
306
if getattr(self, u"checker_initiator_tag", False):
423
307
gobject.source_remove(self.checker_initiator_tag)
424
308
self.checker_initiator_tag = None
425
309
self.stop_checker()
548
419
if self.checker_callback_tag:
549
420
gobject.source_remove(self.checker_callback_tag)
550
421
self.checker_callback_tag = None
551
if getattr(self, "checker", None) is None:
422
if getattr(self, u"checker", None) is None:
553
logger.debug("Stopping checker for %(name)s", vars(self))
424
logger.debug(u"Stopping checker for %(name)s", vars(self))
555
426
os.kill(self.checker.pid, signal.SIGTERM)
557
428
#if self.checker.poll() is None:
558
429
# os.kill(self.checker.pid, signal.SIGKILL)
559
except OSError as error:
430
except OSError, error:
560
431
if error.errno != errno.ESRCH: # No such process
562
433
self.checker = None
564
def dbus_service_property(dbus_interface, signature="v",
565
access="readwrite", byte_arrays=False):
566
"""Decorators for marking methods of a DBusObjectWithProperties to
567
become properties on the D-Bus.
569
The decorated method will be called with no arguments by "Get"
570
and with one argument by "Set".
572
The parameters, where they are supported, are the same as
573
dbus.service.method, except there is only "signature", since the
574
type from Get() and the type sent to Set() is the same.
576
# Encoding deeply encoded byte arrays is not supported yet by the
577
# "Set" method, so we fail early here:
578
if byte_arrays and signature != "ay":
579
raise ValueError("Byte arrays not supported for non-'ay'"
580
" signature %r" % signature)
582
func._dbus_is_property = True
583
func._dbus_interface = dbus_interface
584
func._dbus_signature = signature
585
func._dbus_access = access
586
func._dbus_name = func.__name__
587
if func._dbus_name.endswith("_dbus_property"):
588
func._dbus_name = func._dbus_name[:-14]
589
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
594
class DBusPropertyException(dbus.exceptions.DBusException):
595
"""A base class for D-Bus property-related exceptions
597
def __unicode__(self):
598
return unicode(str(self))
601
class DBusPropertyAccessException(DBusPropertyException):
602
"""A property's access permissions disallows an operation.
607
class DBusPropertyNotFound(DBusPropertyException):
608
"""An attempt was made to access a non-existing property.
613
class DBusObjectWithProperties(dbus.service.Object):
614
"""A D-Bus object with properties.
616
Classes inheriting from this can use the dbus_service_property
617
decorator to expose methods as D-Bus properties. It exposes the
618
standard Get(), Set(), and GetAll() methods on the D-Bus.
622
def _is_dbus_property(obj):
623
return getattr(obj, "_dbus_is_property", False)
625
def _get_all_dbus_properties(self):
626
"""Returns a generator of (name, attribute) pairs
628
return ((prop._dbus_name, prop)
630
inspect.getmembers(self, self._is_dbus_property))
632
def _get_dbus_property(self, interface_name, property_name):
633
"""Returns a bound method if one exists which is a D-Bus
634
property with the specified name and interface.
636
for name in (property_name,
637
property_name + "_dbus_property"):
638
prop = getattr(self, name, None)
640
or not self._is_dbus_property(prop)
641
or prop._dbus_name != property_name
642
or (interface_name and prop._dbus_interface
643
and interface_name != prop._dbus_interface)):
647
raise DBusPropertyNotFound(self.dbus_object_path + ":"
648
+ interface_name + "."
651
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
653
def Get(self, interface_name, property_name):
654
"""Standard D-Bus property Get() method, see D-Bus standard.
656
prop = self._get_dbus_property(interface_name, property_name)
657
if prop._dbus_access == "write":
658
raise DBusPropertyAccessException(property_name)
660
if not hasattr(value, "variant_level"):
662
return type(value)(value, variant_level=value.variant_level+1)
664
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
665
def Set(self, interface_name, property_name, value):
666
"""Standard D-Bus property Set() method, see D-Bus standard.
668
prop = self._get_dbus_property(interface_name, property_name)
669
if prop._dbus_access == "read":
670
raise DBusPropertyAccessException(property_name)
671
if prop._dbus_get_args_options["byte_arrays"]:
672
# The byte_arrays option is not supported yet on
673
# signatures other than "ay".
674
if prop._dbus_signature != "ay":
676
value = dbus.ByteArray(''.join(unichr(byte)
680
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
681
out_signature="a{sv}")
682
def GetAll(self, interface_name):
683
"""Standard D-Bus property GetAll() method, see D-Bus
686
Note: Will not include properties with access="write".
689
for name, prop in self._get_all_dbus_properties():
691
and interface_name != prop._dbus_interface):
692
# Interface non-empty but did not match
694
# Ignore write-only properties
695
if prop._dbus_access == "write":
698
if not hasattr(value, "variant_level"):
701
all[name] = type(value)(value, variant_level=
702
value.variant_level+1)
703
return dbus.Dictionary(all, signature="sv")
705
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
707
path_keyword='object_path',
708
connection_keyword='connection')
709
def Introspect(self, object_path, connection):
710
"""Standard D-Bus method, overloaded to insert property tags.
712
xmlstring = dbus.service.Object.Introspect(self, object_path,
715
document = xml.dom.minidom.parseString(xmlstring)
716
def make_tag(document, name, prop):
717
e = document.createElement("property")
718
e.setAttribute("name", name)
719
e.setAttribute("type", prop._dbus_signature)
720
e.setAttribute("access", prop._dbus_access)
722
for if_tag in document.getElementsByTagName("interface"):
723
for tag in (make_tag(document, name, prop)
725
in self._get_all_dbus_properties()
726
if prop._dbus_interface
727
== if_tag.getAttribute("name")):
728
if_tag.appendChild(tag)
729
# Add the names to the return values for the
730
# "org.freedesktop.DBus.Properties" methods
731
if (if_tag.getAttribute("name")
732
== "org.freedesktop.DBus.Properties"):
733
for cn in if_tag.getElementsByTagName("method"):
734
if cn.getAttribute("name") == "Get":
735
for arg in cn.getElementsByTagName("arg"):
736
if (arg.getAttribute("direction")
738
arg.setAttribute("name", "value")
739
elif cn.getAttribute("name") == "GetAll":
740
for arg in cn.getElementsByTagName("arg"):
741
if (arg.getAttribute("direction")
743
arg.setAttribute("name", "props")
744
xmlstring = document.toxml("utf-8")
746
except (AttributeError, xml.dom.DOMException,
747
xml.parsers.expat.ExpatError) as error:
748
logger.error("Failed to override Introspection method",
753
def datetime_to_dbus (dt, variant_level=0):
754
"""Convert a UTC datetime.datetime() to a D-Bus type."""
756
return dbus.String("", variant_level = variant_level)
757
return dbus.String(dt.isoformat(),
758
variant_level=variant_level)
760
class ClientDBus(Client, DBusObjectWithProperties):
435
def still_valid(self):
436
"""Has the timeout not yet passed for this client?"""
437
if not getattr(self, u"enabled", False):
439
now = datetime.datetime.utcnow()
440
if self.last_checked_ok is None:
441
return now < (self.created + self.timeout)
443
return now < (self.last_checked_ok + self.timeout)
446
class ClientDBus(Client, dbus.service.Object):
761
447
"""A Client class using D-Bus
764
dbus_object_path: dbus.ObjectPath
765
bus: dbus.SystemBus()
450
dbus_object_path: dbus.ObjectPath ; only set if self.use_dbus
768
runtime_expansions = (Client.runtime_expansions
769
+ ("dbus_object_path",))
771
452
# dbus.service.Object doesn't use super(), so we can't either.
773
def __init__(self, bus = None, *args, **kwargs):
774
self._approvals_pending = 0
454
def __init__(self, *args, **kwargs):
776
455
Client.__init__(self, *args, **kwargs)
777
456
# Only now, when this client is initialized, can it show up on
779
client_object_name = unicode(self.name).translate(
782
458
self.dbus_object_path = (dbus.ObjectPath
783
("/clients/" + client_object_name))
784
DBusObjectWithProperties.__init__(self, self.bus,
785
self.dbus_object_path)
787
def notifychangeproperty(transform_func,
788
dbus_name, type_func=lambda x: x,
790
""" Modify a variable so that its a property that announce its
792
transform_fun: Function that takes a value and transform it to
794
dbus_name: DBus name of the variable
795
type_func: Function that transform the value before sending it
797
variant_level: DBus variant level. default: 1
800
def setter(self, value):
801
old_value = real_value[0]
802
real_value[0] = value
803
if hasattr(self, "dbus_object_path"):
804
if type_func(old_value) != type_func(real_value[0]):
805
dbus_value = transform_func(type_func(real_value[0]),
807
self.PropertyChanged(dbus.String(dbus_name),
810
return property(lambda self: real_value[0], setter)
813
expires = notifychangeproperty(datetime_to_dbus, "Expires")
814
approvals_pending = notifychangeproperty(dbus.Boolean,
817
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
818
last_enabled = notifychangeproperty(datetime_to_dbus,
820
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
821
type_func = lambda checker: checker is not None)
822
last_checked_ok = notifychangeproperty(datetime_to_dbus,
824
last_approval_request = notifychangeproperty(datetime_to_dbus,
825
"LastApprovalRequest")
826
approved_by_default = notifychangeproperty(dbus.Boolean,
828
approval_delay = notifychangeproperty(dbus.UInt16, "ApprovalDelay",
829
type_func = _timedelta_to_milliseconds)
830
approval_duration = notifychangeproperty(dbus.UInt16, "ApprovalDuration",
831
type_func = _timedelta_to_milliseconds)
832
host = notifychangeproperty(dbus.String, "Host")
833
timeout = notifychangeproperty(dbus.UInt16, "Timeout",
834
type_func = _timedelta_to_milliseconds)
835
extended_timeout = notifychangeproperty(dbus.UInt16, "ExtendedTimeout",
836
type_func = _timedelta_to_milliseconds)
837
interval = notifychangeproperty(dbus.UInt16, "Interval",
838
type_func = _timedelta_to_milliseconds)
839
checker_command = notifychangeproperty(dbus.String, "Checker")
460
+ self.name.replace(u".", u"_")))
461
dbus.service.Object.__init__(self, bus,
462
self.dbus_object_path)
464
oldstate = getattr(self, u"enabled", False)
465
r = Client.enable(self)
466
if oldstate != self.enabled:
468
self.PropertyChanged(dbus.String(u"enabled"),
469
dbus.Boolean(True, variant_level=1))
470
self.PropertyChanged(dbus.String(u"last_enabled"),
471
(_datetime_to_dbus(self.last_enabled,
841
del notifychangeproperty
475
def disable(self, signal = True):
476
oldstate = getattr(self, u"enabled", False)
477
r = Client.disable(self)
478
if signal and oldstate != self.enabled:
480
self.PropertyChanged(dbus.String(u"enabled"),
481
dbus.Boolean(False, variant_level=1))
843
484
def __del__(self, *args, **kwargs):
845
486
self.remove_from_connection()
846
487
except LookupError:
848
if hasattr(DBusObjectWithProperties, "__del__"):
849
DBusObjectWithProperties.__del__(self, *args, **kwargs)
489
if hasattr(dbus.service.Object, u"__del__"):
490
dbus.service.Object.__del__(self, *args, **kwargs)
850
491
Client.__del__(self, *args, **kwargs)
852
493
def checker_callback(self, pid, condition, command,
853
494
*args, **kwargs):
854
495
self.checker_callback_tag = None
855
496
self.checker = None
498
self.PropertyChanged(dbus.String(u"checker_running"),
499
dbus.Boolean(False, variant_level=1))
856
500
if os.WIFEXITED(condition):
857
501
exitstatus = os.WEXITSTATUS(condition)
858
502
# Emit D-Bus signal
880
533
and old_checker_pid != self.checker.pid):
881
534
# Emit D-Bus signal
882
535
self.CheckerStarted(self.current_checker_command)
885
def _reset_approved(self):
886
self._approved = None
889
def approve(self, value=True):
890
self.send_changedstate()
891
self._approved = value
892
gobject.timeout_add(_timedelta_to_milliseconds
893
(self.approval_duration),
894
self._reset_approved)
897
## D-Bus methods, signals & properties
898
_interface = "se.bsnet.fukt.Mandos.Client"
536
self.PropertyChanged(
537
dbus.String(u"checker_running"),
538
dbus.Boolean(True, variant_level=1))
541
def stop_checker(self, *args, **kwargs):
542
old_checker = getattr(self, u"checker", None)
543
r = Client.stop_checker(self, *args, **kwargs)
544
if (old_checker is not None
545
and getattr(self, u"checker", None) is None):
546
self.PropertyChanged(dbus.String(u"checker_running"),
547
dbus.Boolean(False, variant_level=1))
550
## D-Bus methods & signals
551
_interface = u"se.bsnet.fukt.Mandos.Client"
554
@dbus.service.method(_interface)
556
return self.checked_ok()
902
558
# CheckerCompleted - signal
903
@dbus.service.signal(_interface, signature="nxs")
559
@dbus.service.signal(_interface, signature=u"nxs")
904
560
def CheckerCompleted(self, exitcode, waitstatus, command):
908
564
# CheckerStarted - signal
909
@dbus.service.signal(_interface, signature="s")
565
@dbus.service.signal(_interface, signature=u"s")
910
566
def CheckerStarted(self, command):
570
# GetAllProperties - method
571
@dbus.service.method(_interface, out_signature=u"a{sv}")
572
def GetAllProperties(self):
574
return dbus.Dictionary({
575
dbus.String(u"name"):
576
dbus.String(self.name, variant_level=1),
577
dbus.String(u"fingerprint"):
578
dbus.String(self.fingerprint, variant_level=1),
579
dbus.String(u"host"):
580
dbus.String(self.host, variant_level=1),
581
dbus.String(u"created"):
582
_datetime_to_dbus(self.created, variant_level=1),
583
dbus.String(u"last_enabled"):
584
(_datetime_to_dbus(self.last_enabled,
586
if self.last_enabled is not None
587
else dbus.Boolean(False, variant_level=1)),
588
dbus.String(u"enabled"):
589
dbus.Boolean(self.enabled, variant_level=1),
590
dbus.String(u"last_checked_ok"):
591
(_datetime_to_dbus(self.last_checked_ok,
593
if self.last_checked_ok is not None
594
else dbus.Boolean (False, variant_level=1)),
595
dbus.String(u"timeout"):
596
dbus.UInt64(self.timeout_milliseconds(),
598
dbus.String(u"interval"):
599
dbus.UInt64(self.interval_milliseconds(),
601
dbus.String(u"checker"):
602
dbus.String(self.checker_command,
604
dbus.String(u"checker_running"):
605
dbus.Boolean(self.checker is not None,
607
dbus.String(u"object_path"):
608
dbus.ObjectPath(self.dbus_object_path,
612
# IsStillValid - method
613
@dbus.service.method(_interface, out_signature=u"b")
614
def IsStillValid(self):
615
return self.still_valid()
914
617
# PropertyChanged - signal
915
@dbus.service.signal(_interface, signature="sv")
618
@dbus.service.signal(_interface, signature=u"sv")
916
619
def PropertyChanged(self, property, value):
623
# ReceivedSecret - signal
921
624
@dbus.service.signal(_interface)
924
Is sent after a successful transfer of secret from the Mandos
925
server to mandos-client
625
def ReceivedSecret(self):
929
629
# Rejected - signal
930
@dbus.service.signal(_interface, signature="s")
931
def Rejected(self, reason):
630
@dbus.service.signal(_interface)
935
# NeedApproval - signal
936
@dbus.service.signal(_interface, signature="tb")
937
def NeedApproval(self, timeout, default):
939
return self.need_approval()
944
@dbus.service.method(_interface, in_signature="b")
945
def Approve(self, value):
949
@dbus.service.method(_interface)
635
# SetChecker - method
636
@dbus.service.method(_interface, in_signature=u"s")
637
def SetChecker(self, checker):
638
"D-Bus setter method"
639
self.checker_command = checker
641
self.PropertyChanged(dbus.String(u"checker"),
642
dbus.String(self.checker_command,
646
@dbus.service.method(_interface, in_signature=u"s")
647
def SetHost(self, host):
648
"D-Bus setter method"
651
self.PropertyChanged(dbus.String(u"host"),
652
dbus.String(self.host, variant_level=1))
654
# SetInterval - method
655
@dbus.service.method(_interface, in_signature=u"t")
656
def SetInterval(self, milliseconds):
657
self.interval = datetime.timedelta(0, 0, 0, milliseconds)
659
self.PropertyChanged(dbus.String(u"interval"),
660
(dbus.UInt64(self.interval_milliseconds(),
664
@dbus.service.method(_interface, in_signature=u"ay",
666
def SetSecret(self, secret):
667
"D-Bus setter method"
668
self.secret = str(secret)
670
# SetTimeout - method
671
@dbus.service.method(_interface, in_signature=u"t")
672
def SetTimeout(self, milliseconds):
673
self.timeout = datetime.timedelta(0, 0, 0, milliseconds)
675
self.PropertyChanged(dbus.String(u"timeout"),
676
(dbus.UInt64(self.timeout_milliseconds(),
953
679
# Enable - method
954
680
@dbus.service.method(_interface)
973
699
def StopChecker(self):
974
700
self.stop_checker()
978
# ApprovalPending - property
979
@dbus_service_property(_interface, signature="b", access="read")
980
def ApprovalPending_dbus_property(self):
981
return dbus.Boolean(bool(self.approvals_pending))
983
# ApprovedByDefault - property
984
@dbus_service_property(_interface, signature="b",
986
def ApprovedByDefault_dbus_property(self, value=None):
987
if value is None: # get
988
return dbus.Boolean(self.approved_by_default)
989
self.approved_by_default = bool(value)
991
# ApprovalDelay - property
992
@dbus_service_property(_interface, signature="t",
994
def ApprovalDelay_dbus_property(self, value=None):
995
if value is None: # get
996
return dbus.UInt64(self.approval_delay_milliseconds())
997
self.approval_delay = datetime.timedelta(0, 0, 0, value)
999
# ApprovalDuration - property
1000
@dbus_service_property(_interface, signature="t",
1002
def ApprovalDuration_dbus_property(self, value=None):
1003
if value is None: # get
1004
return dbus.UInt64(_timedelta_to_milliseconds(
1005
self.approval_duration))
1006
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1009
@dbus_service_property(_interface, signature="s", access="read")
1010
def Name_dbus_property(self):
1011
return dbus.String(self.name)
1013
# Fingerprint - property
1014
@dbus_service_property(_interface, signature="s", access="read")
1015
def Fingerprint_dbus_property(self):
1016
return dbus.String(self.fingerprint)
1019
@dbus_service_property(_interface, signature="s",
1021
def Host_dbus_property(self, value=None):
1022
if value is None: # get
1023
return dbus.String(self.host)
1026
# Created - property
1027
@dbus_service_property(_interface, signature="s", access="read")
1028
def Created_dbus_property(self):
1029
return dbus.String(datetime_to_dbus(self.created))
1031
# LastEnabled - property
1032
@dbus_service_property(_interface, signature="s", access="read")
1033
def LastEnabled_dbus_property(self):
1034
return datetime_to_dbus(self.last_enabled)
1036
# Enabled - property
1037
@dbus_service_property(_interface, signature="b",
1039
def Enabled_dbus_property(self, value=None):
1040
if value is None: # get
1041
return dbus.Boolean(self.enabled)
1047
# LastCheckedOK - property
1048
@dbus_service_property(_interface, signature="s",
1050
def LastCheckedOK_dbus_property(self, value=None):
1051
if value is not None:
1054
return datetime_to_dbus(self.last_checked_ok)
1056
# Expires - property
1057
@dbus_service_property(_interface, signature="s", access="read")
1058
def Expires_dbus_property(self):
1059
return datetime_to_dbus(self.expires)
1061
# LastApprovalRequest - property
1062
@dbus_service_property(_interface, signature="s", access="read")
1063
def LastApprovalRequest_dbus_property(self):
1064
return datetime_to_dbus(self.last_approval_request)
1066
# Timeout - property
1067
@dbus_service_property(_interface, signature="t",
1069
def Timeout_dbus_property(self, value=None):
1070
if value is None: # get
1071
return dbus.UInt64(self.timeout_milliseconds())
1072
self.timeout = datetime.timedelta(0, 0, 0, value)
1073
if getattr(self, "disable_initiator_tag", None) is None:
1075
# Reschedule timeout
1076
gobject.source_remove(self.disable_initiator_tag)
1077
self.disable_initiator_tag = None
1079
time_to_die = (self.
1080
_timedelta_to_milliseconds((self
1085
if time_to_die <= 0:
1086
# The timeout has passed
1089
self.expires = (datetime.datetime.utcnow()
1090
+ datetime.timedelta(milliseconds = time_to_die))
1091
self.disable_initiator_tag = (gobject.timeout_add
1092
(time_to_die, self.disable))
1094
# ExtendedTimeout - property
1095
@dbus_service_property(_interface, signature="t",
1097
def ExtendedTimeout_dbus_property(self, value=None):
1098
if value is None: # get
1099
return dbus.UInt64(self.extended_timeout_milliseconds())
1100
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1102
# Interval - property
1103
@dbus_service_property(_interface, signature="t",
1105
def Interval_dbus_property(self, value=None):
1106
if value is None: # get
1107
return dbus.UInt64(self.interval_milliseconds())
1108
self.interval = datetime.timedelta(0, 0, 0, value)
1109
if getattr(self, "checker_initiator_tag", None) is None:
1111
# Reschedule checker run
1112
gobject.source_remove(self.checker_initiator_tag)
1113
self.checker_initiator_tag = (gobject.timeout_add
1114
(value, self.start_checker))
1115
self.start_checker() # Start one now, too
1117
# Checker - property
1118
@dbus_service_property(_interface, signature="s",
1120
def Checker_dbus_property(self, value=None):
1121
if value is None: # get
1122
return dbus.String(self.checker_command)
1123
self.checker_command = value
1125
# CheckerRunning - property
1126
@dbus_service_property(_interface, signature="b",
1128
def CheckerRunning_dbus_property(self, value=None):
1129
if value is None: # get
1130
return dbus.Boolean(self.checker is not None)
1132
self.start_checker()
1136
# ObjectPath - property
1137
@dbus_service_property(_interface, signature="o", access="read")
1138
def ObjectPath_dbus_property(self):
1139
return self.dbus_object_path # is already a dbus.ObjectPath
1142
@dbus_service_property(_interface, signature="ay",
1143
access="write", byte_arrays=True)
1144
def Secret_dbus_property(self, value):
1145
self.secret = str(value)
1150
class ProxyClient(object):
1151
def __init__(self, child_pipe, fpr, address):
1152
self._pipe = child_pipe
1153
self._pipe.send(('init', fpr, address))
1154
if not self._pipe.recv():
1157
def __getattribute__(self, name):
1158
if(name == '_pipe'):
1159
return super(ProxyClient, self).__getattribute__(name)
1160
self._pipe.send(('getattr', name))
1161
data = self._pipe.recv()
1162
if data[0] == 'data':
1164
if data[0] == 'function':
1165
def func(*args, **kwargs):
1166
self._pipe.send(('funcall', name, args, kwargs))
1167
return self._pipe.recv()[1]
1170
def __setattr__(self, name, value):
1171
if(name == '_pipe'):
1172
return super(ProxyClient, self).__setattr__(name, value)
1173
self._pipe.send(('setattr', name, value))
1176
class ClientHandler(socketserver.BaseRequestHandler, object):
705
class ClientHandler(SocketServer.BaseRequestHandler, object):
1177
706
"""A class to handle client connections.
1179
708
Instantiated once for each connection to handle it.
1180
709
Note: This will run in its own forked process."""
1182
711
def handle(self):
1183
with contextlib.closing(self.server.child_pipe) as child_pipe:
1184
logger.info("TCP connection from: %s",
1185
unicode(self.client_address))
1186
logger.debug("Pipe FD: %d",
1187
self.server.child_pipe.fileno())
712
logger.info(u"TCP connection from: %s",
713
unicode(self.client_address))
714
logger.debug(u"IPC Pipe FD: %d", self.server.pipe[1])
715
# Open IPC pipe to parent process
716
with closing(os.fdopen(self.server.pipe[1], u"w", 1)) as ipc:
1189
717
session = (gnutls.connection
1190
718
.ClientSession(self.request,
1191
719
gnutls.connection
1192
720
.X509Credentials()))
722
line = self.request.makefile().readline()
723
logger.debug(u"Protocol version: %r", line)
725
if int(line.strip().split()[0]) > 1:
727
except (ValueError, IndexError, RuntimeError), error:
728
logger.error(u"Unknown protocol version: %s", error)
1194
731
# Note: gnutls.connection.X509Credentials is really a
1195
732
# generic GnuTLS certificate credentials object so long as
1196
733
# no X.509 keys are added to it. Therefore, we can use it
1197
734
# here despite using OpenPGP certificates.
1199
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1200
# "+AES-256-CBC", "+SHA1",
1201
# "+COMP-NULL", "+CTYPE-OPENPGP",
736
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
737
# u"+AES-256-CBC", u"+SHA1",
738
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1203
740
# Use a fallback default, since this MUST be set.
1204
741
priority = self.server.gnutls_priority
1205
742
if priority is None:
1207
744
(gnutls.library.functions
1208
745
.gnutls_priority_set_direct(session._c_object,
1209
746
priority, None))
1211
# Start communication using the Mandos protocol
1212
# Get protocol number
1213
line = self.request.makefile().readline()
1214
logger.debug("Protocol version: %r", line)
1216
if int(line.strip().split()[0]) > 1:
1218
except (ValueError, IndexError, RuntimeError) as error:
1219
logger.error("Unknown protocol version: %s", error)
1222
# Start GnuTLS connection
1224
749
session.handshake()
1225
except gnutls.errors.GNUTLSError as error:
1226
logger.warning("Handshake failed: %s", error)
750
except gnutls.errors.GNUTLSError, error:
751
logger.warning(u"Handshake failed: %s", error)
1227
752
# Do not run session.bye() here: the session is not
1228
753
# established. Just abandon the request.
1230
logger.debug("Handshake succeeded")
1232
approval_required = False
755
logger.debug(u"Handshake succeeded")
1235
fpr = self.fingerprint(self.peer_certificate
1238
gnutls.errors.GNUTLSError) as error:
1239
logger.warning("Bad certificate: %s", error)
1241
logger.debug("Fingerprint: %s", fpr)
1244
client = ProxyClient(child_pipe, fpr,
1245
self.client_address)
1249
if client.approval_delay:
1250
delay = client.approval_delay
1251
client.approvals_pending += 1
1252
approval_required = True
1255
if not client.enabled:
1256
logger.info("Client %s is disabled",
1258
if self.server.use_dbus:
1260
client.Rejected("Disabled")
1263
if client._approved or not client.approval_delay:
1264
#We are approved or approval is disabled
1266
elif client._approved is None:
1267
logger.info("Client %s needs approval",
1269
if self.server.use_dbus:
1271
client.NeedApproval(
1272
client.approval_delay_milliseconds(),
1273
client.approved_by_default)
1275
logger.warning("Client %s was not approved",
1277
if self.server.use_dbus:
1279
client.Rejected("Denied")
1282
#wait until timeout or approved
1283
#x = float(client._timedelta_to_milliseconds(delay))
1284
time = datetime.datetime.now()
1285
client.changedstate.acquire()
1286
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
1287
client.changedstate.release()
1288
time2 = datetime.datetime.now()
1289
if (time2 - time) >= delay:
1290
if not client.approved_by_default:
1291
logger.warning("Client %s timed out while"
1292
" waiting for approval",
1294
if self.server.use_dbus:
1296
client.Rejected("Approval timed out")
1301
delay -= time2 - time
1304
while sent_size < len(client.secret):
1306
sent = session.send(client.secret[sent_size:])
1307
except gnutls.errors.GNUTLSError as error:
1308
logger.warning("gnutls send failed")
1310
logger.debug("Sent: %d, remaining: %d",
1311
sent, len(client.secret)
1312
- (sent_size + sent))
1315
logger.info("Sending secret to %s", client.name)
1316
# bump the timeout as if seen
1317
client.checked_ok(client.extended_timeout)
1318
if self.server.use_dbus:
757
fpr = self.fingerprint(self.peer_certificate(session))
758
except (TypeError, gnutls.errors.GNUTLSError), error:
759
logger.warning(u"Bad certificate: %s", error)
762
logger.debug(u"Fingerprint: %s", fpr)
1323
if approval_required:
1324
client.approvals_pending -= 1
1327
except gnutls.errors.GNUTLSError as error:
1328
logger.warning("GnuTLS bye failed")
764
for c in self.server.clients:
765
if c.fingerprint == fpr:
769
ipc.write(u"NOTFOUND %s\n" % fpr)
772
# Have to check if client.still_valid(), since it is
773
# possible that the client timed out while establishing
774
# the GnuTLS session.
775
if not client.still_valid():
776
ipc.write(u"INVALID %s\n" % client.name)
779
ipc.write(u"SENDING %s\n" % client.name)
781
while sent_size < len(client.secret):
782
sent = session.send(client.secret[sent_size:])
783
logger.debug(u"Sent: %d, remaining: %d",
784
sent, len(client.secret)
785
- (sent_size + sent))
1331
790
def peer_certificate(session):
1387
846
# Convert the buffer to a Python bytestring
1388
847
fpr = ctypes.string_at(buf, buf_len.value)
1389
848
# Convert the bytestring to hexadecimal notation
1390
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
849
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1394
class MultiprocessingMixIn(object):
1395
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
1396
def sub_process_main(self, request, address):
1398
self.finish_request(request, address)
1400
self.handle_error(request, address)
1401
self.close_request(request)
1403
def process_request(self, request, address):
1404
"""Start a new process to process the request."""
1405
multiprocessing.Process(target = self.sub_process_main,
1406
args = (request, address)).start()
1408
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1409
""" adds a pipe to the MixIn """
853
class ForkingMixInWithPipe(SocketServer.ForkingMixIn, object):
854
"""Like SocketServer.ForkingMixIn, but also pass a pipe.
856
Assumes a gobject.MainLoop event loop.
1410
858
def process_request(self, request, client_address):
1411
859
"""Overrides and wraps the original process_request().
1413
This function creates a new pipe in self.pipe
861
This function creates a new pipe in self.pipe
1415
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1417
super(MultiprocessingMixInWithPipe,
863
self.pipe = os.pipe()
864
super(ForkingMixInWithPipe,
1418
865
self).process_request(request, client_address)
1419
self.child_pipe.close()
1420
self.add_pipe(parent_pipe)
1422
def add_pipe(self, parent_pipe):
866
os.close(self.pipe[1]) # close write end
867
# Call "handle_ipc" for both data and EOF events
868
gobject.io_add_watch(self.pipe[0],
869
gobject.IO_IN | gobject.IO_HUP,
871
def handle_ipc(source, condition):
1423
872
"""Dummy function; override as necessary"""
1424
raise NotImplementedError
1426
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1427
socketserver.TCPServer, object):
877
class IPv6_TCPServer(ForkingMixInWithPipe,
878
SocketServer.TCPServer, object):
1428
879
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1431
882
enabled: Boolean; whether this server is activated yet
1432
883
interface: None or a network interface name (string)
1433
884
use_ipv6: Boolean; to use IPv6 or not
886
clients: Set() of Client objects
887
gnutls_priority GnuTLS priority string
888
use_dbus: Boolean; to emit D-Bus signals or not
1435
890
def __init__(self, server_address, RequestHandlerClass,
1436
interface=None, use_ipv6=True):
891
interface=None, use_ipv6=True, clients=None,
892
gnutls_priority=None, use_dbus=True):
1437
894
self.interface = interface
1439
896
self.address_family = socket.AF_INET6
1440
socketserver.TCPServer.__init__(self, server_address,
897
self.clients = clients
898
self.use_dbus = use_dbus
899
self.gnutls_priority = gnutls_priority
900
SocketServer.TCPServer.__init__(self, server_address,
1441
901
RequestHandlerClass)
1442
902
def server_bind(self):
1443
903
"""This overrides the normal server_bind() function
1444
904
to bind to an interface if one was specified, and also NOT to
1445
905
bind to an address or port if they were not specified."""
1446
906
if self.interface is not None:
1447
if SO_BINDTODEVICE is None:
1448
logger.error("SO_BINDTODEVICE does not exist;"
1449
" cannot bind to interface %s",
1453
self.socket.setsockopt(socket.SOL_SOCKET,
1457
except socket.error as error:
1458
if error[0] == errno.EPERM:
1459
logger.error("No permission to"
1460
" bind to interface %s",
1462
elif error[0] == errno.ENOPROTOOPT:
1463
logger.error("SO_BINDTODEVICE not available;"
1464
" cannot bind to interface %s",
908
self.socket.setsockopt(socket.SOL_SOCKET,
910
str(self.interface + u'\0'))
911
except socket.error, error:
912
if error[0] == errno.EPERM:
913
logger.error(u"No permission to"
914
u" bind to interface %s",
1468
918
# Only bind(2) the socket if we really need to.
1469
919
if self.server_address[0] or self.server_address[1]:
1470
920
if not self.server_address[0]:
1471
921
if self.address_family == socket.AF_INET6:
1472
any_address = "::" # in6addr_any
922
any_address = u"::" # in6addr_any
1474
924
any_address = socket.INADDR_ANY
1475
925
self.server_address = (any_address,
1537
954
for cond, name in
1538
955
condition_names.iteritems()
1539
956
if cond & condition)
1540
# error or the other end of multiprocessing.Pipe has closed
1541
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
1544
# Read a request from the child
1545
request = parent_pipe.recv()
1546
command = request[0]
1548
if command == 'init':
1550
address = request[2]
1552
for c in self.clients:
1553
if c.fingerprint == fpr:
1557
logger.info("Client not found for fingerprint: %s, ad"
1558
"dress: %s", fpr, address)
1561
mandos_dbus_service.ClientNotFound(fpr, address[0])
1562
parent_pipe.send(False)
1565
gobject.io_add_watch(parent_pipe.fileno(),
1566
gobject.IO_IN | gobject.IO_HUP,
1567
functools.partial(self.handle_ipc,
1568
parent_pipe = parent_pipe,
1569
client_object = client))
1570
parent_pipe.send(True)
1571
# remove the old hook in favor of the new above hook on same fileno
1573
if command == 'funcall':
1574
funcname = request[1]
1578
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
1580
if command == 'getattr':
1581
attrname = request[1]
1582
if callable(client_object.__getattribute__(attrname)):
1583
parent_pipe.send(('function',))
1585
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
1587
if command == 'setattr':
1588
attrname = request[1]
1590
setattr(client_object, attrname, value)
957
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
960
# Turn the pipe file descriptor into a Python file object
961
if source not in file_objects:
962
file_objects[source] = os.fdopen(source, u"r", 1)
964
# Read a line from the file object
965
cmdline = file_objects[source].readline()
966
if not cmdline: # Empty line means end of file
968
file_objects[source].close()
969
del file_objects[source]
971
# Stop calling this function
974
logger.debug(u"IPC command: %r", cmdline)
976
# Parse and act on command
977
cmd, args = cmdline.rstrip(u"\r\n").split(None, 1)
979
if cmd == u"NOTFOUND":
980
logger.warning(u"Client not found for fingerprint: %s",
984
mandos_dbus_service.ClientNotFound(args)
985
elif cmd == u"INVALID":
986
for client in self.clients:
987
if client.name == args:
988
logger.warning(u"Client %s is invalid", args)
994
logger.error(u"Unknown client %s is invalid", args)
995
elif cmd == u"SENDING":
996
for client in self.clients:
997
if client.name == args:
998
logger.info(u"Sending secret to %s", client.name)
1002
client.ReceivedSecret()
1005
logger.error(u"Sending secret to unknown client %s",
1008
logger.error(u"Unknown IPC command: %r", cmdline)
1010
# Keep calling this function
1595
1014
def string_to_delta(interval):
1596
1015
"""Parse a string and return a datetime.timedelta
1598
>>> string_to_delta('7d')
1017
>>> string_to_delta(u'7d')
1599
1018
datetime.timedelta(7)
1600
>>> string_to_delta('60s')
1019
>>> string_to_delta(u'60s')
1601
1020
datetime.timedelta(0, 60)
1602
>>> string_to_delta('60m')
1021
>>> string_to_delta(u'60m')
1603
1022
datetime.timedelta(0, 3600)
1604
>>> string_to_delta('24h')
1023
>>> string_to_delta(u'24h')
1605
1024
datetime.timedelta(1)
1606
>>> string_to_delta('1w')
1025
>>> string_to_delta(u'1w')
1607
1026
datetime.timedelta(7)
1608
>>> string_to_delta('5m 30s')
1027
>>> string_to_delta(u'5m 30s')
1609
1028
datetime.timedelta(0, 330)
1611
1030
timevalue = datetime.timedelta(0)
1685
##################################################################
1126
######################################################################
1686
1127
# Parsing of options, both command line and config file
1688
parser = argparse.ArgumentParser()
1689
parser.add_argument("-v", "--version", action="version",
1690
version = "%%(prog)s %s" % version,
1691
help="show version number and exit")
1692
parser.add_argument("-i", "--interface", metavar="IF",
1693
help="Bind to interface IF")
1694
parser.add_argument("-a", "--address",
1695
help="Address to listen for requests on")
1696
parser.add_argument("-p", "--port", type=int,
1697
help="Port number to receive requests on")
1698
parser.add_argument("--check", action="store_true",
1699
help="Run self-test")
1700
parser.add_argument("--debug", action="store_true",
1701
help="Debug mode; run in foreground and log"
1703
parser.add_argument("--debuglevel", metavar="LEVEL",
1704
help="Debug level for stdout output")
1705
parser.add_argument("--priority", help="GnuTLS"
1706
" priority string (see GnuTLS documentation)")
1707
parser.add_argument("--servicename",
1708
metavar="NAME", help="Zeroconf service name")
1709
parser.add_argument("--configdir",
1710
default="/etc/mandos", metavar="DIR",
1711
help="Directory to search for configuration"
1713
parser.add_argument("--no-dbus", action="store_false",
1714
dest="use_dbus", help="Do not provide D-Bus"
1715
" system bus interface")
1716
parser.add_argument("--no-ipv6", action="store_false",
1717
dest="use_ipv6", help="Do not use IPv6")
1718
options = parser.parse_args()
1129
parser = optparse.OptionParser(version = "%%prog %s" % version)
1130
parser.add_option("-i", u"--interface", type=u"string",
1131
metavar="IF", help=u"Bind to interface IF")
1132
parser.add_option("-a", u"--address", type=u"string",
1133
help=u"Address to listen for requests on")
1134
parser.add_option("-p", u"--port", type=u"int",
1135
help=u"Port number to receive requests on")
1136
parser.add_option("--check", action=u"store_true",
1137
help=u"Run self-test")
1138
parser.add_option("--debug", action=u"store_true",
1139
help=u"Debug mode; run in foreground and log to"
1141
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1142
u" priority string (see GnuTLS documentation)")
1143
parser.add_option("--servicename", type=u"string",
1144
metavar=u"NAME", help=u"Zeroconf service name")
1145
parser.add_option("--configdir", type=u"string",
1146
default=u"/etc/mandos", metavar=u"DIR",
1147
help=u"Directory to search for configuration"
1149
parser.add_option("--no-dbus", action=u"store_false",
1150
dest=u"use_dbus", help=u"Do not provide D-Bus"
1151
u" system bus interface")
1152
parser.add_option("--no-ipv6", action=u"store_false",
1153
dest=u"use_ipv6", help=u"Do not use IPv6")
1154
options = parser.parse_args()[0]
1720
1156
if options.check:
1769
1204
##################################################################
1771
1206
# For convenience
1772
debug = server_settings["debug"]
1773
debuglevel = server_settings["debuglevel"]
1774
use_dbus = server_settings["use_dbus"]
1775
use_ipv6 = server_settings["use_ipv6"]
1777
if server_settings["servicename"] != "Mandos":
1207
debug = server_settings[u"debug"]
1208
use_dbus = server_settings[u"use_dbus"]
1209
use_ipv6 = server_settings[u"use_ipv6"]
1212
syslogger.setLevel(logging.WARNING)
1213
console.setLevel(logging.WARNING)
1215
if server_settings[u"servicename"] != u"Mandos":
1778
1216
syslogger.setFormatter(logging.Formatter
1779
('Mandos (%s) [%%(process)d]:'
1780
' %%(levelname)s: %%(message)s'
1781
% server_settings["servicename"]))
1217
(u'Mandos (%s) [%%(process)d]:'
1218
u' %%(levelname)s: %%(message)s'
1219
% server_settings[u"servicename"]))
1783
1221
# Parse config file with clients
1784
client_defaults = { "timeout": "5m",
1785
"extended_timeout": "15m",
1787
"checker": "fping -q -- %%(host)s",
1789
"approval_delay": "0s",
1790
"approval_duration": "1s",
1222
client_defaults = { u"timeout": u"1h",
1224
u"checker": u"fping -q -- %%(host)s",
1792
client_config = configparser.SafeConfigParser(client_defaults)
1793
client_config.read(os.path.join(server_settings["configdir"],
1227
client_config = ConfigParser.SafeConfigParser(client_defaults)
1228
client_config.read(os.path.join(server_settings[u"configdir"],
1796
1231
global mandos_dbus_service
1797
1232
mandos_dbus_service = None
1799
tcp_server = MandosServer((server_settings["address"],
1800
server_settings["port"]),
1802
interface=(server_settings["interface"]
1806
server_settings["priority"],
1809
pidfilename = "/var/run/mandos.pid"
1811
pidfile = open(pidfilename, "w")
1813
logger.error("Could not open file %r", pidfilename)
1235
tcp_server = IPv6_TCPServer((server_settings[u"address"],
1236
server_settings[u"port"]),
1239
server_settings[u"interface"],
1243
server_settings[u"priority"],
1245
pidfilename = u"/var/run/mandos.pid"
1247
pidfile = open(pidfilename, u"w")
1249
logger.error(u"Could not open file %r", pidfilename)
1816
uid = pwd.getpwnam("_mandos").pw_uid
1817
gid = pwd.getpwnam("_mandos").pw_gid
1252
uid = pwd.getpwnam(u"_mandos").pw_uid
1253
gid = pwd.getpwnam(u"_mandos").pw_gid
1818
1254
except KeyError:
1820
uid = pwd.getpwnam("mandos").pw_uid
1821
gid = pwd.getpwnam("mandos").pw_gid
1256
uid = pwd.getpwnam(u"mandos").pw_uid
1257
gid = pwd.getpwnam(u"mandos").pw_gid
1822
1258
except KeyError:
1824
uid = pwd.getpwnam("nobody").pw_uid
1825
gid = pwd.getpwnam("nobody").pw_gid
1260
uid = pwd.getpwnam(u"nobody").pw_uid
1261
gid = pwd.getpwnam(u"nobody").pw_gid
1826
1262
except KeyError:
1832
except OSError as error:
1268
except OSError, error:
1833
1269
if error[0] != errno.EPERM:
1836
if not debug and not debuglevel:
1837
syslogger.setLevel(logging.WARNING)
1838
console.setLevel(logging.WARNING)
1840
level = getattr(logging, debuglevel.upper())
1841
syslogger.setLevel(level)
1842
console.setLevel(level)
1272
# Enable all possible GnuTLS debugging
1845
# Enable all possible GnuTLS debugging
1847
1274
# "Use a log level over 10 to enable all debugging options."
1848
1275
# - GnuTLS manual
1849
1276
gnutls.library.functions.gnutls_global_set_log_level(11)
1851
1278
@gnutls.library.types.gnutls_log_func
1852
1279
def debug_gnutls(level, string):
1853
logger.debug("GnuTLS: %s", string[:-1])
1280
logger.debug(u"GnuTLS: %s", string[:-1])
1855
1282
(gnutls.library.functions
1856
1283
.gnutls_global_set_log_function(debug_gnutls))
1858
# Redirect stdin so all checkers get /dev/null
1859
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1860
os.dup2(null, sys.stdin.fileno())
1864
# No console logging
1865
logger.removeHandler(console)
1867
# Need to fork before connecting to D-Bus
1869
# Close all input and output, do double fork, etc.
1286
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1287
service = AvahiService(name = server_settings[u"servicename"],
1288
servicetype = u"_mandos._tcp",
1289
protocol = protocol)
1290
if server_settings["interface"]:
1291
service.interface = (if_nametoindex
1292
(str(server_settings[u"interface"])))
1872
1294
global main_loop
1873
1297
# From the Avahi example code
1874
1298
DBusGMainLoop(set_as_default=True )
1875
1299
main_loop = gobject.MainLoop()
1876
1300
bus = dbus.SystemBus()
1301
server = dbus.Interface(bus.get_object(avahi.DBUS_NAME,
1302
avahi.DBUS_PATH_SERVER),
1303
avahi.DBUS_INTERFACE_SERVER)
1877
1304
# End of Avahi example code
1880
bus_name = dbus.service.BusName("se.bsnet.fukt.Mandos",
1881
bus, do_not_queue=True)
1882
except dbus.exceptions.NameExistsException as e:
1883
logger.error(unicode(e) + ", disabling D-Bus")
1885
server_settings["use_dbus"] = False
1886
tcp_server.use_dbus = False
1887
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1888
service = AvahiService(name = server_settings["servicename"],
1889
servicetype = "_mandos._tcp",
1890
protocol = protocol, bus = bus)
1891
if server_settings["interface"]:
1892
service.interface = (if_nametoindex
1893
(str(server_settings["interface"])))
1895
global multiprocessing_manager
1896
multiprocessing_manager = multiprocessing.Manager()
1306
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos", bus)
1898
1308
client_class = Client
1900
client_class = functools.partial(ClientDBus, bus = bus)
1901
def client_config_items(config, section):
1902
special_settings = {
1903
"approved_by_default":
1904
lambda: config.getboolean(section,
1905
"approved_by_default"),
1907
for name, value in config.items(section):
1909
yield (name, special_settings[name]())
1913
tcp_server.clients.update(set(
1310
client_class = ClientDBus
1914
1312
client_class(name = section,
1915
config= dict(client_config_items(
1916
client_config, section)))
1313
config= dict(client_config.items(section)))
1917
1314
for section in client_config.sections()))
1918
if not tcp_server.clients:
1919
logger.warning("No clients defined")
1316
logger.warning(u"No clients defined")
1319
# Redirect stdin so all checkers get /dev/null
1320
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1321
os.dup2(null, sys.stdin.fileno())
1325
# No console logging
1326
logger.removeHandler(console)
1327
# Close all input and output, do double fork, etc.
1331
with closing(pidfile):
1333
pidfile.write(str(pid) + "\n")
1336
logger.error(u"Could not write to file %r with PID %d",
1339
# "pidfile" was never created
1344
"Cleanup function; run on exit"
1346
# From the Avahi example code
1347
if not group is None:
1350
# End of Avahi example code
1353
client = clients.pop()
1354
client.disable_hook = None
1357
atexit.register(cleanup)
1925
pidfile.write(str(pid) + "\n".encode("utf-8"))
1928
logger.error("Could not write to file %r with PID %d",
1931
# "pidfile" was never created
1935
1360
signal.signal(signal.SIGINT, signal.SIG_IGN)
1937
1361
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1938
1362
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1941
1365
class MandosDBusService(dbus.service.Object):
1942
1366
"""A D-Bus proxy object"""
1943
1367
def __init__(self):
1944
dbus.service.Object.__init__(self, bus, "/")
1945
_interface = "se.bsnet.fukt.Mandos"
1947
@dbus.service.signal(_interface, signature="o")
1948
def ClientAdded(self, objpath):
1952
@dbus.service.signal(_interface, signature="ss")
1953
def ClientNotFound(self, fingerprint, address):
1957
@dbus.service.signal(_interface, signature="os")
1368
dbus.service.Object.__init__(self, bus, u"/")
1369
_interface = u"se.bsnet.fukt.Mandos"
1371
@dbus.service.signal(_interface, signature=u"oa{sv}")
1372
def ClientAdded(self, objpath, properties):
1376
@dbus.service.signal(_interface, signature=u"s")
1377
def ClientNotFound(self, fingerprint):
1381
@dbus.service.signal(_interface, signature=u"os")
1958
1382
def ClientRemoved(self, objpath, name):
1962
@dbus.service.method(_interface, out_signature="ao")
1386
@dbus.service.method(_interface, out_signature=u"ao")
1963
1387
def GetAllClients(self):
1965
return dbus.Array(c.dbus_object_path
1966
for c in tcp_server.clients)
1389
return dbus.Array(c.dbus_object_path for c in clients)
1968
1391
@dbus.service.method(_interface,
1969
out_signature="a{oa{sv}}")
1392
out_signature=u"a{oa{sv}}")
1970
1393
def GetAllClientsWithProperties(self):
1972
1395
return dbus.Dictionary(
1973
((c.dbus_object_path, c.GetAll(""))
1974
for c in tcp_server.clients),
1396
((c.dbus_object_path, c.GetAllProperties())
1398
signature=u"oa{sv}")
1977
@dbus.service.method(_interface, in_signature="o")
1400
@dbus.service.method(_interface, in_signature=u"o")
1978
1401
def RemoveClient(self, object_path):
1980
for c in tcp_server.clients:
1981
1404
if c.dbus_object_path == object_path:
1982
tcp_server.clients.remove(c)
1983
1406
c.remove_from_connection()
1984
1407
# Don't signal anything except ClientRemoved
1985
c.disable(quiet=True)
1408
c.disable(signal=False)
1986
1409
# Emit D-Bus signal
1987
1410
self.ClientRemoved(object_path, c.name)
1989
raise KeyError(object_path)
1993
1416
mandos_dbus_service = MandosDBusService()
1996
"Cleanup function; run on exit"
1999
while tcp_server.clients:
2000
client = tcp_server.clients.pop()
2002
client.remove_from_connection()
2003
client.disable_hook = None
2004
# Don't signal anything except ClientRemoved
2005
client.disable(quiet=True)
2008
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
2011
atexit.register(cleanup)
2013
for client in tcp_server.clients:
1418
for client in clients:
2015
1420
# Emit D-Bus signal
2016
mandos_dbus_service.ClientAdded(client.dbus_object_path)
1421
mandos_dbus_service.ClientAdded(client.dbus_object_path,
1422
client.GetAllProperties())
2017
1423
client.enable()
2019
1425
tcp_server.enable()