109
345
max_renames: integer; maximum number of renames
110
346
rename_count: integer; counter so we only rename after collisions
111
347
a sensible number of times
348
group: D-Bus Entry Group
350
bus: dbus.SystemBus()
113
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
114
servicetype = None, port = None, TXT = None, domain = "",
115
host = "", max_renames = 32768):
354
interface=avahi.IF_UNSPEC,
362
protocol=avahi.PROTO_UNSPEC,
116
364
self.interface = interface
118
366
self.type = servicetype
368
self.TXT = TXT if TXT is not None else []
124
369
self.domain = domain
126
371
self.rename_count = 0
127
372
self.max_renames = max_renames
373
self.protocol = protocol
374
self.group = None # our entry group
377
self.entry_group_state_changed_match = None
379
def rename(self, remove=True):
129
380
"""Derived from the Avahi example code"""
130
381
if self.rename_count >= self.max_renames:
131
logger.critical(u"No suitable Zeroconf service name found"
132
u" after %i retries, exiting.",
382
logger.critical("No suitable Zeroconf service name found"
383
" after %i retries, exiting.",
133
384
self.rename_count)
134
385
raise AvahiServiceError("Too many renames")
135
self.name = server.GetAlternativeServiceName(self.name)
136
logger.info(u"Changing Zeroconf service name to %r ...",
138
syslogger.setFormatter(logging.Formatter\
139
('Mandos (%s): %%(levelname)s:'
140
' %%(message)s' % self.name))
387
self.server.GetAlternativeServiceName(self.name))
143
388
self.rename_count += 1
389
logger.info("Changing Zeroconf service name to %r ...",
395
except dbus.exceptions.DBusException as error:
396
if (error.get_dbus_name()
397
== "org.freedesktop.Avahi.CollisionError"):
398
logger.info("Local Zeroconf service name collision.")
399
return self.rename(remove=False)
401
logger.critical("D-Bus Exception", exc_info=error)
144
405
def remove(self):
145
406
"""Derived from the Avahi example code"""
146
if group is not None:
407
if self.entry_group_state_changed_match is not None:
408
self.entry_group_state_changed_match.remove()
409
self.entry_group_state_changed_match = None
410
if self.group is not None:
149
414
"""Derived from the Avahi example code"""
152
group = dbus.Interface\
153
(bus.get_object(avahi.DBUS_NAME,
154
server.EntryGroupNew()),
155
avahi.DBUS_INTERFACE_ENTRY_GROUP)
156
group.connect_to_signal('StateChanged',
157
entry_group_state_changed)
158
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
159
service.name, service.type)
161
self.interface, # interface
162
avahi.PROTO_INET6, # protocol
163
dbus.UInt32(0), # flags
164
self.name, self.type,
165
self.domain, self.host,
166
dbus.UInt16(self.port),
167
avahi.string_array_to_txt_array(self.TXT))
170
# From the Avahi example code:
171
group = None # our entry group
172
# End of Avahi example code
175
class Client(dbus.service.Object):
416
if self.group is None:
417
self.group = dbus.Interface(
418
self.bus.get_object(avahi.DBUS_NAME,
419
self.server.EntryGroupNew()),
420
avahi.DBUS_INTERFACE_ENTRY_GROUP)
421
self.entry_group_state_changed_match = (
422
self.group.connect_to_signal(
423
'StateChanged', self.entry_group_state_changed))
424
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
425
self.name, self.type)
426
self.group.AddService(
429
dbus.UInt32(0), # flags
430
self.name, self.type,
431
self.domain, self.host,
432
dbus.UInt16(self.port),
433
avahi.string_array_to_txt_array(self.TXT))
436
def entry_group_state_changed(self, state, error):
437
"""Derived from the Avahi example code"""
438
logger.debug("Avahi entry group state change: %i", state)
440
if state == avahi.ENTRY_GROUP_ESTABLISHED:
441
logger.debug("Zeroconf service established.")
442
elif state == avahi.ENTRY_GROUP_COLLISION:
443
logger.info("Zeroconf service name collision.")
445
elif state == avahi.ENTRY_GROUP_FAILURE:
446
logger.critical("Avahi: Error in group state changed %s",
448
raise AvahiGroupError("State changed: {!s}".format(error))
451
"""Derived from the Avahi example code"""
452
if self.group is not None:
455
except (dbus.exceptions.UnknownMethodException,
456
dbus.exceptions.DBusException):
461
def server_state_changed(self, state, error=None):
462
"""Derived from the Avahi example code"""
463
logger.debug("Avahi server state change: %i", state)
465
avahi.SERVER_INVALID: "Zeroconf server invalid",
466
avahi.SERVER_REGISTERING: None,
467
avahi.SERVER_COLLISION: "Zeroconf server name collision",
468
avahi.SERVER_FAILURE: "Zeroconf server failure",
470
if state in bad_states:
471
if bad_states[state] is not None:
473
logger.error(bad_states[state])
475
logger.error(bad_states[state] + ": %r", error)
477
elif state == avahi.SERVER_RUNNING:
480
except dbus.exceptions.DBusException as error:
481
if (error.get_dbus_name()
482
== "org.freedesktop.Avahi.CollisionError"):
483
logger.info("Local Zeroconf service name"
485
return self.rename(remove=False)
487
logger.critical("D-Bus Exception", exc_info=error)
492
logger.debug("Unknown state: %r", state)
494
logger.debug("Unknown state: %r: %r", state, error)
497
"""Derived from the Avahi example code"""
498
if self.server is None:
499
self.server = dbus.Interface(
500
self.bus.get_object(avahi.DBUS_NAME,
501
avahi.DBUS_PATH_SERVER,
502
follow_name_owner_changes=True),
503
avahi.DBUS_INTERFACE_SERVER)
504
self.server.connect_to_signal("StateChanged",
505
self.server_state_changed)
506
self.server_state_changed(self.server.GetState())
509
class AvahiServiceToSyslog(AvahiService):
510
def rename(self, *args, **kwargs):
511
"""Add the new name to the syslog messages"""
512
ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
513
syslogger.setFormatter(logging.Formatter(
514
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
519
# Pretend that we have a GnuTLS module
521
"""This isn't so much a class as it is a module-like namespace."""
523
library = ctypes.util.find_library("gnutls")
525
library = ctypes.util.find_library("gnutls-deb0")
526
_library = ctypes.cdll.LoadLibrary(library)
529
# Unless otherwise indicated, the constants and types below are
530
# all from the gnutls/gnutls.h C header file.
541
E_NO_CERTIFICATE_FOUND = -49
546
KEYID_USE_SHA256 = 1 # gnutls/x509.h
547
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
550
class session_int(ctypes.Structure):
552
session_t = ctypes.POINTER(session_int)
554
class certificate_credentials_st(ctypes.Structure):
556
certificate_credentials_t = ctypes.POINTER(
557
certificate_credentials_st)
558
certificate_type_t = ctypes.c_int
560
class datum_t(ctypes.Structure):
561
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
562
('size', ctypes.c_uint)]
564
class openpgp_crt_int(ctypes.Structure):
566
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
567
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
568
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
569
credentials_type_t = ctypes.c_int
570
transport_ptr_t = ctypes.c_void_p
571
close_request_t = ctypes.c_int
574
class Error(Exception):
575
def __init__(self, message=None, code=None, args=()):
576
# Default usage is by a message string, but if a return
577
# code is passed, convert it to a string with
580
if message is None and code is not None:
581
message = gnutls.strerror(code)
582
return super(gnutls.Error, self).__init__(
585
class CertificateSecurityError(Error):
591
self._c_object = gnutls.certificate_credentials_t()
592
gnutls.certificate_allocate_credentials(
593
ctypes.byref(self._c_object))
594
self.type = gnutls.CRD_CERTIFICATE
597
gnutls.certificate_free_credentials(self._c_object)
600
def __init__(self, socket, credentials=None):
601
self._c_object = gnutls.session_t()
602
gnutls_flags = gnutls.CLIENT
603
if gnutls.check_version(b"3.5.6"):
604
gnutls_flags |= gnutls.NO_TICKETS
606
gnutls_flags |= gnutls.ENABLE_RAWPK
607
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
609
gnutls.set_default_priority(self._c_object)
610
gnutls.transport_set_ptr(self._c_object, socket.fileno())
611
gnutls.handshake_set_private_extensions(self._c_object,
614
if credentials is None:
615
credentials = gnutls.Credentials()
616
gnutls.credentials_set(self._c_object, credentials.type,
617
ctypes.cast(credentials._c_object,
619
self.credentials = credentials
622
gnutls.deinit(self._c_object)
625
return gnutls.handshake(self._c_object)
627
def send(self, data):
631
data_len -= gnutls.record_send(self._c_object,
636
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
638
# Error handling functions
639
def _error_code(result):
640
"""A function to raise exceptions on errors, suitable
641
for the 'restype' attribute on ctypes functions"""
644
if result == gnutls.E_NO_CERTIFICATE_FOUND:
645
raise gnutls.CertificateSecurityError(code=result)
646
raise gnutls.Error(code=result)
648
def _retry_on_error(result, func, arguments):
649
"""A function to retry on some errors, suitable
650
for the 'errcheck' attribute on ctypes functions"""
652
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
653
return _error_code(result)
654
result = func(*arguments)
657
# Unless otherwise indicated, the function declarations below are
658
# all from the gnutls/gnutls.h C header file.
661
priority_set_direct = _library.gnutls_priority_set_direct
662
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
663
ctypes.POINTER(ctypes.c_char_p)]
664
priority_set_direct.restype = _error_code
666
init = _library.gnutls_init
667
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
668
init.restype = _error_code
670
set_default_priority = _library.gnutls_set_default_priority
671
set_default_priority.argtypes = [session_t]
672
set_default_priority.restype = _error_code
674
record_send = _library.gnutls_record_send
675
record_send.argtypes = [session_t, ctypes.c_void_p,
677
record_send.restype = ctypes.c_ssize_t
678
record_send.errcheck = _retry_on_error
680
certificate_allocate_credentials = (
681
_library.gnutls_certificate_allocate_credentials)
682
certificate_allocate_credentials.argtypes = [
683
ctypes.POINTER(certificate_credentials_t)]
684
certificate_allocate_credentials.restype = _error_code
686
certificate_free_credentials = (
687
_library.gnutls_certificate_free_credentials)
688
certificate_free_credentials.argtypes = [
689
certificate_credentials_t]
690
certificate_free_credentials.restype = None
692
handshake_set_private_extensions = (
693
_library.gnutls_handshake_set_private_extensions)
694
handshake_set_private_extensions.argtypes = [session_t,
696
handshake_set_private_extensions.restype = None
698
credentials_set = _library.gnutls_credentials_set
699
credentials_set.argtypes = [session_t, credentials_type_t,
701
credentials_set.restype = _error_code
703
strerror = _library.gnutls_strerror
704
strerror.argtypes = [ctypes.c_int]
705
strerror.restype = ctypes.c_char_p
707
certificate_type_get = _library.gnutls_certificate_type_get
708
certificate_type_get.argtypes = [session_t]
709
certificate_type_get.restype = _error_code
711
certificate_get_peers = _library.gnutls_certificate_get_peers
712
certificate_get_peers.argtypes = [session_t,
713
ctypes.POINTER(ctypes.c_uint)]
714
certificate_get_peers.restype = ctypes.POINTER(datum_t)
716
global_set_log_level = _library.gnutls_global_set_log_level
717
global_set_log_level.argtypes = [ctypes.c_int]
718
global_set_log_level.restype = None
720
global_set_log_function = _library.gnutls_global_set_log_function
721
global_set_log_function.argtypes = [log_func]
722
global_set_log_function.restype = None
724
deinit = _library.gnutls_deinit
725
deinit.argtypes = [session_t]
726
deinit.restype = None
728
handshake = _library.gnutls_handshake
729
handshake.argtypes = [session_t]
730
handshake.restype = _error_code
731
handshake.errcheck = _retry_on_error
733
transport_set_ptr = _library.gnutls_transport_set_ptr
734
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
735
transport_set_ptr.restype = None
737
bye = _library.gnutls_bye
738
bye.argtypes = [session_t, close_request_t]
739
bye.restype = _error_code
740
bye.errcheck = _retry_on_error
742
check_version = _library.gnutls_check_version
743
check_version.argtypes = [ctypes.c_char_p]
744
check_version.restype = ctypes.c_char_p
746
_need_version = b"3.3.0"
747
if check_version(_need_version) is None:
748
raise self.Error("Needs GnuTLS {} or later"
749
.format(_need_version))
751
_tls_rawpk_version = b"3.6.6"
752
has_rawpk = bool(check_version(_tls_rawpk_version))
756
class pubkey_st(ctypes.Structure):
758
pubkey_t = ctypes.POINTER(pubkey_st)
760
x509_crt_fmt_t = ctypes.c_int
762
# All the function declarations below are from gnutls/abstract.h
763
pubkey_init = _library.gnutls_pubkey_init
764
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
765
pubkey_init.restype = _error_code
767
pubkey_import = _library.gnutls_pubkey_import
768
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
770
pubkey_import.restype = _error_code
772
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
773
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
774
ctypes.POINTER(ctypes.c_ubyte),
775
ctypes.POINTER(ctypes.c_size_t)]
776
pubkey_get_key_id.restype = _error_code
778
pubkey_deinit = _library.gnutls_pubkey_deinit
779
pubkey_deinit.argtypes = [pubkey_t]
780
pubkey_deinit.restype = None
782
# All the function declarations below are from gnutls/openpgp.h
784
openpgp_crt_init = _library.gnutls_openpgp_crt_init
785
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
786
openpgp_crt_init.restype = _error_code
788
openpgp_crt_import = _library.gnutls_openpgp_crt_import
789
openpgp_crt_import.argtypes = [openpgp_crt_t,
790
ctypes.POINTER(datum_t),
792
openpgp_crt_import.restype = _error_code
794
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
795
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
796
ctypes.POINTER(ctypes.c_uint)]
797
openpgp_crt_verify_self.restype = _error_code
799
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
800
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
801
openpgp_crt_deinit.restype = None
803
openpgp_crt_get_fingerprint = (
804
_library.gnutls_openpgp_crt_get_fingerprint)
805
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
809
openpgp_crt_get_fingerprint.restype = _error_code
811
if check_version(b"3.6.4"):
812
certificate_type_get2 = _library.gnutls_certificate_type_get2
813
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
814
certificate_type_get2.restype = _error_code
816
# Remove non-public functions
817
del _error_code, _retry_on_error
820
def call_pipe(connection, # : multiprocessing.Connection
821
func, *args, **kwargs):
822
"""This function is meant to be called by multiprocessing.Process
824
This function runs func(*args, **kwargs), and writes the resulting
825
return value on the provided multiprocessing.Connection.
827
connection.send(func(*args, **kwargs))
176
832
"""A representation of a client host served by this server.
178
name: string; from the config file, used in log messages
179
fingerprint: string (40 or 32 hexadecimal digits); used to
180
uniquely identify the client
181
secret: bytestring; sent verbatim (over TLS) to client
182
host: string; available for use by the checker command
183
created: datetime.datetime(); object creation, not client host
185
last_checked_ok: datetime.datetime() or None if not yet checked OK
186
timeout: datetime.timedelta(); How long from last_checked_ok
187
until this client is invalid
188
interval: datetime.timedelta(); How often to start a new checker
189
stop_hook: If set, called by stop() as stop_hook(self)
190
checker: subprocess.Popen(); a running checker process used
191
to see if the client lives.
192
'None' if no process is running.
193
checker_initiator_tag: a gobject event source tag, or None
194
stop_initiator_tag: - '' -
195
checker_callback_tag: - '' -
196
checker_command: string; External command which is run to check if
197
client lives. %() expansions are done at
835
approved: bool(); 'None' if not yet approved/disapproved
836
approval_delay: datetime.timedelta(); Time to wait for approval
837
approval_duration: datetime.timedelta(); Duration of one approval
838
checker: multiprocessing.Process(); a running checker process used
839
to see if the client lives. 'None' if no process is
841
checker_callback_tag: a GLib event source tag, or None
842
checker_command: string; External command which is run to check
843
if client lives. %() expansions are done at
198
844
runtime with vars(self) as dict, so that for
199
845
instance %(name)s can be used in the command.
201
_timeout: Real variable for 'timeout'
202
_interval: Real variable for 'interval'
203
_timeout_milliseconds: Used when calling gobject.timeout_add()
204
_interval_milliseconds: - '' -
846
checker_initiator_tag: a GLib event source tag, or None
847
created: datetime.datetime(); (UTC) object creation
848
client_structure: Object describing what attributes a client has
849
and is used for storing the client at exit
850
current_checker_command: string; current running checker_command
851
disable_initiator_tag: a GLib event source tag, or None
853
fingerprint: string (40 or 32 hexadecimal digits); used to
854
uniquely identify an OpenPGP client
855
key_id: string (64 hexadecimal digits); used to uniquely identify
856
a client using raw public keys
857
host: string; available for use by the checker command
858
interval: datetime.timedelta(); How often to start a new checker
859
last_approval_request: datetime.datetime(); (UTC) or None
860
last_checked_ok: datetime.datetime(); (UTC) or None
861
last_checker_status: integer between 0 and 255 reflecting exit
862
status of last checker. -1 reflects crashed
863
checker, -2 means no checker completed yet.
864
last_checker_signal: The signal which killed the last checker, if
865
last_checker_status is -1
866
last_enabled: datetime.datetime(); (UTC) or None
867
name: string; from the config file, used in log messages and
869
secret: bytestring; sent verbatim (over TLS) to client
870
timeout: datetime.timedelta(); How long from last_checked_ok
871
until this client is disabled
872
extended_timeout: extra long timeout when secret has been sent
873
runtime_expansions: Allowed attributes for runtime expansion.
874
expires: datetime.datetime(); time (UTC) when a client will be
876
server_settings: The server_settings dict from main()
206
interface = u"org.mandos_system.Mandos.Clients"
208
@dbus.service.method(interface, out_signature="s")
210
"D-Bus getter method"
213
@dbus.service.method(interface, out_signature="s")
214
def getFingerprint(self):
215
"D-Bus getter method"
216
return self.fingerprint
218
@dbus.service.method(interface, in_signature="ay",
220
def setSecret(self, secret):
221
"D-Bus setter method"
224
def _set_timeout(self, timeout):
225
"Setter function for the 'timeout' attribute"
226
self._timeout = timeout
227
self._timeout_milliseconds = ((self.timeout.days
228
* 24 * 60 * 60 * 1000)
229
+ (self.timeout.seconds * 1000)
230
+ (self.timeout.microseconds
233
self.TimeoutChanged(self._timeout_milliseconds)
234
timeout = property(lambda self: self._timeout, _set_timeout)
237
@dbus.service.method(interface, out_signature="t")
238
def getTimeout(self):
239
"D-Bus getter method"
240
return self._timeout_milliseconds
242
@dbus.service.signal(interface, signature="t")
243
def TimeoutChanged(self, t):
247
def _set_interval(self, interval):
248
"Setter function for the 'interval' attribute"
249
self._interval = interval
250
self._interval_milliseconds = ((self.interval.days
251
* 24 * 60 * 60 * 1000)
252
+ (self.interval.seconds
254
+ (self.interval.microseconds
257
self.IntervalChanged(self._interval_milliseconds)
258
interval = property(lambda self: self._interval, _set_interval)
261
@dbus.service.method(interface, out_signature="t")
262
def getInterval(self):
263
"D-Bus getter method"
264
return self._interval_milliseconds
266
@dbus.service.signal(interface, signature="t")
267
def IntervalChanged(self, t):
271
def __init__(self, name = None, stop_hook=None, config=None):
272
"""Note: the 'checker' key in 'config' sets the
273
'checker_command' attribute and *not* the 'checker'
275
dbus.service.Object.__init__(self, bus,
277
% name.replace(".", "_"))
879
runtime_expansions = ("approval_delay", "approval_duration",
880
"created", "enabled", "expires", "key_id",
881
"fingerprint", "host", "interval",
882
"last_approval_request", "last_checked_ok",
883
"last_enabled", "name", "timeout")
886
"extended_timeout": "PT15M",
888
"checker": "fping -q -- %%(host)s",
890
"approval_delay": "PT0S",
891
"approval_duration": "PT1S",
892
"approved_by_default": "True",
897
def config_parser(config):
898
"""Construct a new dict of client settings of this form:
899
{ client_name: {setting_name: value, ...}, ...}
900
with exceptions for any special settings as defined above.
901
NOTE: Must be a pure function. Must return the same result
902
value given the same arguments.
905
for client_name in config.sections():
906
section = dict(config.items(client_name))
907
client = settings[client_name] = {}
909
client["host"] = section["host"]
910
# Reformat values from string types to Python types
911
client["approved_by_default"] = config.getboolean(
912
client_name, "approved_by_default")
913
client["enabled"] = config.getboolean(client_name,
916
# Uppercase and remove spaces from key_id and fingerprint
917
# for later comparison purposes with return value from the
918
# key_id() and fingerprint() functions
919
client["key_id"] = (section.get("key_id", "").upper()
921
client["fingerprint"] = (section["fingerprint"].upper()
923
if "secret" in section:
924
client["secret"] = codecs.decode(section["secret"]
927
elif "secfile" in section:
928
with open(os.path.expanduser(os.path.expandvars
929
(section["secfile"])),
931
client["secret"] = secfile.read()
933
raise TypeError("No secret or secfile for section {}"
935
client["timeout"] = string_to_delta(section["timeout"])
936
client["extended_timeout"] = string_to_delta(
937
section["extended_timeout"])
938
client["interval"] = string_to_delta(section["interval"])
939
client["approval_delay"] = string_to_delta(
940
section["approval_delay"])
941
client["approval_duration"] = string_to_delta(
942
section["approval_duration"])
943
client["checker_command"] = section["checker"]
944
client["last_approval_request"] = None
945
client["last_checked_ok"] = None
946
client["last_checker_status"] = -2
950
def __init__(self, settings, name=None, server_settings=None):
281
logger.debug(u"Creating client %r", self.name)
282
# Uppercase and remove spaces from fingerprint for later
283
# comparison purposes with return value from the fingerprint()
285
self.fingerprint = config["fingerprint"].upper()\
287
logger.debug(u" Fingerprint: %s", self.fingerprint)
288
if "secret" in config:
289
self.secret = config["secret"].decode(u"base64")
290
elif "secfile" in config:
291
with closing(open(os.path.expanduser
293
(config["secfile"])))) \
295
self.secret = secfile.read()
952
if server_settings is None:
954
self.server_settings = server_settings
955
# adding all client settings
956
for setting, value in settings.items():
957
setattr(self, setting, value)
960
if not hasattr(self, "last_enabled"):
961
self.last_enabled = datetime.datetime.utcnow()
962
if not hasattr(self, "expires"):
963
self.expires = (datetime.datetime.utcnow()
297
raise TypeError(u"No secret or secfile for client %s"
299
self.host = config.get("host", "")
300
self.created = datetime.datetime.now()
302
self.last_checked_ok = None
303
self.timeout = string_to_delta(config["timeout"])
304
self.interval = string_to_delta(config["interval"])
305
self.stop_hook = stop_hook
966
self.last_enabled = None
969
logger.debug("Creating client %r", self.name)
970
logger.debug(" Key ID: %s", self.key_id)
971
logger.debug(" Fingerprint: %s", self.fingerprint)
972
self.created = settings.get("created",
973
datetime.datetime.utcnow())
975
# attributes specific for this server instance
306
976
self.checker = None
307
977
self.checker_initiator_tag = None
308
self.stop_initiator_tag = None
978
self.disable_initiator_tag = None
309
979
self.checker_callback_tag = None
310
self.check_command = config["checker"]
980
self.current_checker_command = None
982
self.approvals_pending = 0
983
self.changedstate = multiprocessing_manager.Condition(
984
multiprocessing_manager.Lock())
985
self.client_structure = [attr
986
for attr in self.__dict__.keys()
987
if not attr.startswith("_")]
988
self.client_structure.append("client_structure")
990
for name, t in inspect.getmembers(
991
type(self), lambda obj: isinstance(obj, property)):
992
if not name.startswith("_"):
993
self.client_structure.append(name)
995
# Send notice to process children that client state has changed
996
def send_changedstate(self):
997
with self.changedstate:
998
self.changedstate.notify_all()
313
1001
"""Start this client's checker and timeout hooks"""
1002
if getattr(self, "enabled", False):
1005
self.expires = datetime.datetime.utcnow() + self.timeout
1007
self.last_enabled = datetime.datetime.utcnow()
1009
self.send_changedstate()
1011
def disable(self, quiet=True):
1012
"""Disable this client."""
1013
if not getattr(self, "enabled", False):
1016
logger.info("Disabling client %s", self.name)
1017
if getattr(self, "disable_initiator_tag", None) is not None:
1018
GLib.source_remove(self.disable_initiator_tag)
1019
self.disable_initiator_tag = None
1021
if getattr(self, "checker_initiator_tag", None) is not None:
1022
GLib.source_remove(self.checker_initiator_tag)
1023
self.checker_initiator_tag = None
1025
self.enabled = False
1027
self.send_changedstate()
1028
# Do not run this again if called by a GLib.timeout_add
1034
def init_checker(self):
315
1035
# Schedule a new checker to be started an 'interval' from now,
316
1036
# and every interval from then on.
317
self.checker_initiator_tag = gobject.timeout_add\
318
(self._interval_milliseconds,
1037
if self.checker_initiator_tag is not None:
1038
GLib.source_remove(self.checker_initiator_tag)
1039
self.checker_initiator_tag = GLib.timeout_add(
1040
int(self.interval.total_seconds() * 1000),
1042
# Schedule a disable() when 'timeout' has passed
1043
if self.disable_initiator_tag is not None:
1044
GLib.source_remove(self.disable_initiator_tag)
1045
self.disable_initiator_tag = GLib.timeout_add(
1046
int(self.timeout.total_seconds() * 1000), self.disable)
320
1047
# Also start a new checker *right now*.
321
1048
self.start_checker()
322
# Schedule a stop() when 'timeout' has passed
323
self.stop_initiator_tag = gobject.timeout_add\
324
(self._timeout_milliseconds,
327
self.StateChanged(True)
329
@dbus.service.signal(interface, signature="b")
330
def StateChanged(self, started):
335
"""Stop this client."""
336
if getattr(self, "started", False):
337
logger.info(u"Stopping client %s", self.name)
340
if getattr(self, "stop_initiator_tag", False):
341
gobject.source_remove(self.stop_initiator_tag)
342
self.stop_initiator_tag = None
343
if getattr(self, "checker_initiator_tag", False):
344
gobject.source_remove(self.checker_initiator_tag)
345
self.checker_initiator_tag = None
350
self.StateChanged(False)
351
# Do not run this again if called by a gobject.timeout_add
354
Stop = dbus.service.method(interface)(stop)
357
self.stop_hook = None
360
def checker_callback(self, pid, condition):
1050
def checker_callback(self, source, condition, connection,
361
1052
"""The checker has completed, so take appropriate actions."""
1053
# Read return code from connection (see call_pipe)
1054
returncode = connection.recv()
1056
if self.checker is not None:
362
1058
self.checker_callback_tag = None
363
1059
self.checker = None
364
if os.WIFEXITED(condition) \
365
and (os.WEXITSTATUS(condition) == 0):
366
logger.info(u"Checker for %(name)s succeeded",
369
self.CheckerCompleted(True)
371
elif not os.WIFEXITED(condition):
372
logger.warning(u"Checker for %(name)s crashed?",
1062
self.last_checker_status = returncode
1063
self.last_checker_signal = None
1064
if self.last_checker_status == 0:
1065
logger.info("Checker for %(name)s succeeded",
1069
logger.info("Checker for %(name)s failed", vars(self))
1071
self.last_checker_status = -1
1072
self.last_checker_signal = -returncode
1073
logger.warning("Checker for %(name)s crashed?",
375
self.CheckerCompleted(False)
377
logger.info(u"Checker for %(name)s failed",
380
self.CheckerCompleted(False)
382
@dbus.service.signal(interface, signature="b")
383
def CheckerCompleted(self, success):
387
def bump_timeout(self):
388
"""Bump up the timeout for this client.
389
This should only be called when the client has been seen,
392
self.last_checked_ok = datetime.datetime.now()
393
gobject.source_remove(self.stop_initiator_tag)
394
self.stop_initiator_tag = gobject.timeout_add\
395
(self._timeout_milliseconds, self.stop)
397
bumpTimeout = dbus.service.method(interface)(bump_timeout)
1077
def checked_ok(self):
1078
"""Assert that the client has been seen, alive and well."""
1079
self.last_checked_ok = datetime.datetime.utcnow()
1080
self.last_checker_status = 0
1081
self.last_checker_signal = None
1084
def bump_timeout(self, timeout=None):
1085
"""Bump up the timeout for this client."""
1087
timeout = self.timeout
1088
if self.disable_initiator_tag is not None:
1089
GLib.source_remove(self.disable_initiator_tag)
1090
self.disable_initiator_tag = None
1091
if getattr(self, "enabled", False):
1092
self.disable_initiator_tag = GLib.timeout_add(
1093
int(timeout.total_seconds() * 1000), self.disable)
1094
self.expires = datetime.datetime.utcnow() + timeout
1096
def need_approval(self):
1097
self.last_approval_request = datetime.datetime.utcnow()
399
1099
def start_checker(self):
400
1100
"""Start a new checker subprocess if one is not running.
401
1102
If a checker already exists, leave it running and do
403
1104
# The reason for not killing a running checker is that if we
404
# did that, then if a checker (for some reason) started
405
# running slowly and taking more than 'interval' time, the
406
# client would inevitably timeout, since no checker would get
407
# a chance to run to completion. If we instead leave running
1105
# did that, and if a checker (for some reason) started running
1106
# slowly and taking more than 'interval' time, then the client
1107
# would inevitably timeout, since no checker would get a
1108
# chance to run to completion. If we instead leave running
408
1109
# checkers alone, the checker would have to take more time
409
# than 'timeout' for the client to be declared invalid, which
410
# is as it should be.
1110
# than 'timeout' for the client to be disabled, which is as it
1113
if self.checker is not None and not self.checker.is_alive():
1114
logger.warning("Checker was not alive; joining")
1117
# Start a new checker if needed
411
1118
if self.checker is None:
413
# In case check_command has exactly one % operator
414
command = self.check_command % self.host
416
# Escape attributes for the shell
417
escaped_attrs = dict((key, re.escape(str(val)))
419
vars(self).iteritems())
421
command = self.check_command % escaped_attrs
422
except TypeError, error:
423
logger.error(u'Could not format string "%s":'
424
u' %s', self.check_command, error)
425
return True # Try again later
427
logger.info(u"Starting checker %r for %s",
429
# We don't need to redirect stdout and stderr, since
430
# in normal mode, that is already done by daemon(),
431
# and in debug mode we don't want to. (Stdin is
432
# always replaced by /dev/null.)
433
self.checker = subprocess.Popen(command,
436
self.checker_callback_tag = gobject.child_watch_add\
438
self.checker_callback)
440
self.CheckerStarted(command)
441
except OSError, error:
442
logger.error(u"Failed to start subprocess: %s",
444
# Re-run this periodically if run by gobject.timeout_add
1119
# Escape attributes for the shell
1121
attr: re.escape(str(getattr(self, attr)))
1122
for attr in self.runtime_expansions}
1124
command = self.checker_command % escaped_attrs
1125
except TypeError as error:
1126
logger.error('Could not format string "%s"',
1127
self.checker_command,
1129
return True # Try again later
1130
self.current_checker_command = command
1131
logger.info("Starting checker %r for %s", command,
1133
# We don't need to redirect stdout and stderr, since
1134
# in normal mode, that is already done by daemon(),
1135
# and in debug mode we don't want to. (Stdin is
1136
# always replaced by /dev/null.)
1137
# The exception is when not debugging but nevertheless
1138
# running in the foreground; use the previously
1140
popen_args = {"close_fds": True,
1143
if (not self.server_settings["debug"]
1144
and self.server_settings["foreground"]):
1145
popen_args.update({"stdout": wnull,
1147
pipe = multiprocessing.Pipe(duplex=False)
1148
self.checker = multiprocessing.Process(
1150
args=(pipe[1], subprocess.call, command),
1152
self.checker.start()
1153
self.checker_callback_tag = GLib.io_add_watch(
1154
GLib.IOChannel.unix_new(pipe[0].fileno()),
1155
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
1156
self.checker_callback, pipe[0], command)
1157
# Re-run this periodically if run by GLib.timeout_add
447
@dbus.service.signal(interface, signature="s")
448
def CheckerStarted(self, command):
451
@dbus.service.method(interface, out_signature="b")
452
def checkerIsRunning(self):
453
"D-Bus getter method"
454
return self.checker is not None
456
1160
def stop_checker(self):
457
1161
"""Force the checker process, if any, to stop."""
458
1162
if self.checker_callback_tag:
459
gobject.source_remove(self.checker_callback_tag)
1163
GLib.source_remove(self.checker_callback_tag)
460
1164
self.checker_callback_tag = None
461
1165
if getattr(self, "checker", None) is None:
463
logger.debug(u"Stopping checker for %(name)s", vars(self))
465
os.kill(self.checker.pid, signal.SIGTERM)
467
#if self.checker.poll() is None:
468
# os.kill(self.checker.pid, signal.SIGKILL)
469
except OSError, error:
470
if error.errno != errno.ESRCH: # No such process
1167
logger.debug("Stopping checker for %(name)s", vars(self))
1168
self.checker.terminate()
472
1169
self.checker = None
474
StopChecker = dbus.service.method(interface)(stop_checker)
476
def still_valid(self):
477
"""Has the timeout not yet passed for this client?"""
480
now = datetime.datetime.now()
481
if self.last_checked_ok is None:
482
return now < (self.created + self.timeout)
484
return now < (self.last_checked_ok + self.timeout)
486
stillValid = dbus.service.method(interface, out_signature="b")\
492
def peer_certificate(session):
493
"Return the peer's OpenPGP certificate as a bytestring"
494
# If not an OpenPGP certificate...
495
if gnutls.library.functions.gnutls_certificate_type_get\
496
(session._c_object) \
497
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP:
498
# ...do the normal thing
499
return session.peer_certificate
500
list_size = ctypes.c_uint()
501
cert_list = gnutls.library.functions.gnutls_certificate_get_peers\
502
(session._c_object, ctypes.byref(list_size))
503
if list_size.value == 0:
506
return ctypes.string_at(cert.data, cert.size)
509
def fingerprint(openpgp):
510
"Convert an OpenPGP bytestring to a hexdigit fingerprint string"
511
# New GnuTLS "datum" with the OpenPGP public key
512
datum = gnutls.library.types.gnutls_datum_t\
513
(ctypes.cast(ctypes.c_char_p(openpgp),
514
ctypes.POINTER(ctypes.c_ubyte)),
515
ctypes.c_uint(len(openpgp)))
516
# New empty GnuTLS certificate
517
crt = gnutls.library.types.gnutls_openpgp_crt_t()
518
gnutls.library.functions.gnutls_openpgp_crt_init\
520
# Import the OpenPGP public key into the certificate
521
gnutls.library.functions.gnutls_openpgp_crt_import\
522
(crt, ctypes.byref(datum),
523
gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)
524
# Verify the self signature in the key
525
crtverify = ctypes.c_uint()
526
gnutls.library.functions.gnutls_openpgp_crt_verify_self\
527
(crt, 0, ctypes.byref(crtverify))
528
if crtverify.value != 0:
529
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
530
raise gnutls.errors.CertificateSecurityError("Verify failed")
531
# New buffer for the fingerprint
532
buf = ctypes.create_string_buffer(20)
533
buf_len = ctypes.c_size_t()
534
# Get the fingerprint from the certificate into the buffer
535
gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint\
536
(crt, ctypes.byref(buf), ctypes.byref(buf_len))
537
# Deinit the certificate
538
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
539
# Convert the buffer to a Python bytestring
540
fpr = ctypes.string_at(buf, buf_len.value)
541
# Convert the bytestring to hexadecimal notation
542
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
546
class TCP_handler(SocketServer.BaseRequestHandler, object):
547
"""A TCP request handler class.
548
Instantiated by IPv6_TCPServer for each request to handle it.
1172
def dbus_service_property(dbus_interface,
1176
"""Decorators for marking methods of a DBusObjectWithProperties to
1177
become properties on the D-Bus.
1179
The decorated method will be called with no arguments by "Get"
1180
and with one argument by "Set".
1182
The parameters, where they are supported, are the same as
1183
dbus.service.method, except there is only "signature", since the
1184
type from Get() and the type sent to Set() is the same.
1186
# Encoding deeply encoded byte arrays is not supported yet by the
1187
# "Set" method, so we fail early here:
1188
if byte_arrays and signature != "ay":
1189
raise ValueError("Byte arrays not supported for non-'ay'"
1190
" signature {!r}".format(signature))
1192
def decorator(func):
1193
func._dbus_is_property = True
1194
func._dbus_interface = dbus_interface
1195
func._dbus_signature = signature
1196
func._dbus_access = access
1197
func._dbus_name = func.__name__
1198
if func._dbus_name.endswith("_dbus_property"):
1199
func._dbus_name = func._dbus_name[:-14]
1200
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
1206
def dbus_interface_annotations(dbus_interface):
1207
"""Decorator for marking functions returning interface annotations
1211
@dbus_interface_annotations("org.example.Interface")
1212
def _foo(self): # Function name does not matter
1213
return {"org.freedesktop.DBus.Deprecated": "true",
1214
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1218
def decorator(func):
1219
func._dbus_is_interface = True
1220
func._dbus_interface = dbus_interface
1221
func._dbus_name = dbus_interface
1227
def dbus_annotations(annotations):
1228
"""Decorator to annotate D-Bus methods, signals or properties
1231
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1232
"org.freedesktop.DBus.Property."
1233
"EmitsChangedSignal": "false"})
1234
@dbus_service_property("org.example.Interface", signature="b",
1236
def Property_dbus_property(self):
1237
return dbus.Boolean(False)
1239
See also the DBusObjectWithAnnotations class.
1242
def decorator(func):
1243
func._dbus_annotations = annotations
1249
class DBusPropertyException(dbus.exceptions.DBusException):
1250
"""A base class for D-Bus property-related exceptions
1255
class DBusPropertyAccessException(DBusPropertyException):
1256
"""A property's access permissions disallows an operation.
1261
class DBusPropertyNotFound(DBusPropertyException):
1262
"""An attempt was made to access a non-existing property.
1267
class DBusObjectWithAnnotations(dbus.service.Object):
1268
"""A D-Bus object with annotations.
1270
Classes inheriting from this can use the dbus_annotations
1271
decorator to add annotations to methods or signals.
1275
def _is_dbus_thing(thing):
1276
"""Returns a function testing if an attribute is a D-Bus thing
1278
If called like _is_dbus_thing("method") it returns a function
1279
suitable for use as predicate to inspect.getmembers().
1281
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1284
def _get_all_dbus_things(self, thing):
1285
"""Returns a generator of (name, attribute) pairs
1287
return ((getattr(athing.__get__(self), "_dbus_name", name),
1288
athing.__get__(self))
1289
for cls in self.__class__.__mro__
1291
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1293
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1295
path_keyword='object_path',
1296
connection_keyword='connection')
1297
def Introspect(self, object_path, connection):
1298
"""Overloading of standard D-Bus method.
1300
Inserts annotation tags on methods and signals.
1302
xmlstring = dbus.service.Object.Introspect(self, object_path,
1305
document = xml.dom.minidom.parseString(xmlstring)
1307
for if_tag in document.getElementsByTagName("interface"):
1308
# Add annotation tags
1309
for typ in ("method", "signal"):
1310
for tag in if_tag.getElementsByTagName(typ):
1312
for name, prop in (self.
1313
_get_all_dbus_things(typ)):
1314
if (name == tag.getAttribute("name")
1315
and prop._dbus_interface
1316
== if_tag.getAttribute("name")):
1317
annots.update(getattr(
1318
prop, "_dbus_annotations", {}))
1319
for name, value in annots.items():
1320
ann_tag = document.createElement(
1322
ann_tag.setAttribute("name", name)
1323
ann_tag.setAttribute("value", value)
1324
tag.appendChild(ann_tag)
1325
# Add interface annotation tags
1326
for annotation, value in dict(
1327
itertools.chain.from_iterable(
1328
annotations().items()
1329
for name, annotations
1330
in self._get_all_dbus_things("interface")
1331
if name == if_tag.getAttribute("name")
1333
ann_tag = document.createElement("annotation")
1334
ann_tag.setAttribute("name", annotation)
1335
ann_tag.setAttribute("value", value)
1336
if_tag.appendChild(ann_tag)
1337
# Fix argument name for the Introspect method itself
1338
if (if_tag.getAttribute("name")
1339
== dbus.INTROSPECTABLE_IFACE):
1340
for cn in if_tag.getElementsByTagName("method"):
1341
if cn.getAttribute("name") == "Introspect":
1342
for arg in cn.getElementsByTagName("arg"):
1343
if (arg.getAttribute("direction")
1345
arg.setAttribute("name",
1347
xmlstring = document.toxml("utf-8")
1349
except (AttributeError, xml.dom.DOMException,
1350
xml.parsers.expat.ExpatError) as error:
1351
logger.error("Failed to override Introspection method",
1356
class DBusObjectWithProperties(DBusObjectWithAnnotations):
1357
"""A D-Bus object with properties.
1359
Classes inheriting from this can use the dbus_service_property
1360
decorator to expose methods as D-Bus properties. It exposes the
1361
standard Get(), Set(), and GetAll() methods on the D-Bus.
1364
def _get_dbus_property(self, interface_name, property_name):
1365
"""Returns a bound method if one exists which is a D-Bus
1366
property with the specified name and interface.
1368
for cls in self.__class__.__mro__:
1369
for name, value in inspect.getmembers(
1370
cls, self._is_dbus_thing("property")):
1371
if (value._dbus_name == property_name
1372
and value._dbus_interface == interface_name):
1373
return value.__get__(self)
1376
raise DBusPropertyNotFound("{}:{}.{}".format(
1377
self.dbus_object_path, interface_name, property_name))
1380
def _get_all_interface_names(cls):
1381
"""Get a sequence of all interfaces supported by an object"""
1382
return (name for name in set(getattr(getattr(x, attr),
1383
"_dbus_interface", None)
1384
for x in (inspect.getmro(cls))
1386
if name is not None)
1388
@dbus.service.method(dbus.PROPERTIES_IFACE,
1391
def Get(self, interface_name, property_name):
1392
"""Standard D-Bus property Get() method, see D-Bus standard.
1394
prop = self._get_dbus_property(interface_name, property_name)
1395
if prop._dbus_access == "write":
1396
raise DBusPropertyAccessException(property_name)
1398
if not hasattr(value, "variant_level"):
1400
return type(value)(value, variant_level=value.variant_level+1)
1402
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
1403
def Set(self, interface_name, property_name, value):
1404
"""Standard D-Bus property Set() method, see D-Bus standard.
1406
prop = self._get_dbus_property(interface_name, property_name)
1407
if prop._dbus_access == "read":
1408
raise DBusPropertyAccessException(property_name)
1409
if prop._dbus_get_args_options["byte_arrays"]:
1410
# The byte_arrays option is not supported yet on
1411
# signatures other than "ay".
1412
if prop._dbus_signature != "ay":
1413
raise ValueError("Byte arrays not supported for non-"
1414
"'ay' signature {!r}"
1415
.format(prop._dbus_signature))
1416
value = dbus.ByteArray(bytes(value))
1419
@dbus.service.method(dbus.PROPERTIES_IFACE,
1421
out_signature="a{sv}")
1422
def GetAll(self, interface_name):
1423
"""Standard D-Bus property GetAll() method, see D-Bus
1426
Note: Will not include properties with access="write".
1429
for name, prop in self._get_all_dbus_things("property"):
1431
and interface_name != prop._dbus_interface):
1432
# Interface non-empty but did not match
1434
# Ignore write-only properties
1435
if prop._dbus_access == "write":
1438
if not hasattr(value, "variant_level"):
1439
properties[name] = value
1441
properties[name] = type(value)(
1442
value, variant_level=value.variant_level + 1)
1443
return dbus.Dictionary(properties, signature="sv")
1445
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1446
def PropertiesChanged(self, interface_name, changed_properties,
1447
invalidated_properties):
1448
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1453
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1455
path_keyword='object_path',
1456
connection_keyword='connection')
1457
def Introspect(self, object_path, connection):
1458
"""Overloading of standard D-Bus method.
1460
Inserts property tags and interface annotation tags.
1462
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1466
document = xml.dom.minidom.parseString(xmlstring)
1468
def make_tag(document, name, prop):
1469
e = document.createElement("property")
1470
e.setAttribute("name", name)
1471
e.setAttribute("type", prop._dbus_signature)
1472
e.setAttribute("access", prop._dbus_access)
1475
for if_tag in document.getElementsByTagName("interface"):
1477
for tag in (make_tag(document, name, prop)
1479
in self._get_all_dbus_things("property")
1480
if prop._dbus_interface
1481
== if_tag.getAttribute("name")):
1482
if_tag.appendChild(tag)
1483
# Add annotation tags for properties
1484
for tag in if_tag.getElementsByTagName("property"):
1486
for name, prop in self._get_all_dbus_things(
1488
if (name == tag.getAttribute("name")
1489
and prop._dbus_interface
1490
== if_tag.getAttribute("name")):
1491
annots.update(getattr(
1492
prop, "_dbus_annotations", {}))
1493
for name, value in annots.items():
1494
ann_tag = document.createElement(
1496
ann_tag.setAttribute("name", name)
1497
ann_tag.setAttribute("value", value)
1498
tag.appendChild(ann_tag)
1499
# Add the names to the return values for the
1500
# "org.freedesktop.DBus.Properties" methods
1501
if (if_tag.getAttribute("name")
1502
== "org.freedesktop.DBus.Properties"):
1503
for cn in if_tag.getElementsByTagName("method"):
1504
if cn.getAttribute("name") == "Get":
1505
for arg in cn.getElementsByTagName("arg"):
1506
if (arg.getAttribute("direction")
1508
arg.setAttribute("name", "value")
1509
elif cn.getAttribute("name") == "GetAll":
1510
for arg in cn.getElementsByTagName("arg"):
1511
if (arg.getAttribute("direction")
1513
arg.setAttribute("name", "props")
1514
xmlstring = document.toxml("utf-8")
1516
except (AttributeError, xml.dom.DOMException,
1517
xml.parsers.expat.ExpatError) as error:
1518
logger.error("Failed to override Introspection method",
1524
dbus.OBJECT_MANAGER_IFACE
1525
except AttributeError:
1526
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1529
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1530
"""A D-Bus object with an ObjectManager.
1532
Classes inheriting from this exposes the standard
1533
GetManagedObjects call and the InterfacesAdded and
1534
InterfacesRemoved signals on the standard
1535
"org.freedesktop.DBus.ObjectManager" interface.
1537
Note: No signals are sent automatically; they must be sent
1540
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1541
out_signature="a{oa{sa{sv}}}")
1542
def GetManagedObjects(self):
1543
"""This function must be overridden"""
1544
raise NotImplementedError()
1546
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1547
signature="oa{sa{sv}}")
1548
def InterfacesAdded(self, object_path, interfaces_and_properties):
1551
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1552
def InterfacesRemoved(self, object_path, interfaces):
1555
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1557
path_keyword='object_path',
1558
connection_keyword='connection')
1559
def Introspect(self, object_path, connection):
1560
"""Overloading of standard D-Bus method.
1562
Override return argument name of GetManagedObjects to be
1563
"objpath_interfaces_and_properties"
1565
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1569
document = xml.dom.minidom.parseString(xmlstring)
1571
for if_tag in document.getElementsByTagName("interface"):
1572
# Fix argument name for the GetManagedObjects method
1573
if (if_tag.getAttribute("name")
1574
== dbus.OBJECT_MANAGER_IFACE):
1575
for cn in if_tag.getElementsByTagName("method"):
1576
if (cn.getAttribute("name")
1577
== "GetManagedObjects"):
1578
for arg in cn.getElementsByTagName("arg"):
1579
if (arg.getAttribute("direction")
1583
"objpath_interfaces"
1585
xmlstring = document.toxml("utf-8")
1587
except (AttributeError, xml.dom.DOMException,
1588
xml.parsers.expat.ExpatError) as error:
1589
logger.error("Failed to override Introspection method",
1594
def datetime_to_dbus(dt, variant_level=0):
1595
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1597
return dbus.String("", variant_level=variant_level)
1598
return dbus.String(dt.isoformat(), variant_level=variant_level)
1601
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1602
"""A class decorator; applied to a subclass of
1603
dbus.service.Object, it will add alternate D-Bus attributes with
1604
interface names according to the "alt_interface_names" mapping.
1607
@alternate_dbus_interfaces({"org.example.Interface":
1608
"net.example.AlternateInterface"})
1609
class SampleDBusObject(dbus.service.Object):
1610
@dbus.service.method("org.example.Interface")
1611
def SampleDBusMethod():
1614
The above "SampleDBusMethod" on "SampleDBusObject" will be
1615
reachable via two interfaces: "org.example.Interface" and
1616
"net.example.AlternateInterface", the latter of which will have
1617
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1618
"true", unless "deprecate" is passed with a False value.
1620
This works for methods and signals, and also for D-Bus properties
1621
(from DBusObjectWithProperties) and interfaces (from the
1622
dbus_interface_annotations decorator).
1626
for orig_interface_name, alt_interface_name in (
1627
alt_interface_names.items()):
1629
interface_names = set()
1630
# Go though all attributes of the class
1631
for attrname, attribute in inspect.getmembers(cls):
1632
# Ignore non-D-Bus attributes, and D-Bus attributes
1633
# with the wrong interface name
1634
if (not hasattr(attribute, "_dbus_interface")
1635
or not attribute._dbus_interface.startswith(
1636
orig_interface_name)):
1638
# Create an alternate D-Bus interface name based on
1640
alt_interface = attribute._dbus_interface.replace(
1641
orig_interface_name, alt_interface_name)
1642
interface_names.add(alt_interface)
1643
# Is this a D-Bus signal?
1644
if getattr(attribute, "_dbus_is_signal", False):
1645
# Extract the original non-method undecorated
1646
# function by black magic
1647
if sys.version_info.major == 2:
1648
nonmethod_func = (dict(
1649
zip(attribute.func_code.co_freevars,
1650
attribute.__closure__))
1651
["func"].cell_contents)
1653
nonmethod_func = (dict(
1654
zip(attribute.__code__.co_freevars,
1655
attribute.__closure__))
1656
["func"].cell_contents)
1657
# Create a new, but exactly alike, function
1658
# object, and decorate it to be a new D-Bus signal
1659
# with the alternate D-Bus interface name
1660
new_function = copy_function(nonmethod_func)
1661
new_function = (dbus.service.signal(
1663
attribute._dbus_signature)(new_function))
1664
# Copy annotations, if any
1666
new_function._dbus_annotations = dict(
1667
attribute._dbus_annotations)
1668
except AttributeError:
1671
# Define a creator of a function to call both the
1672
# original and alternate functions, so both the
1673
# original and alternate signals gets sent when
1674
# the function is called
1675
def fixscope(func1, func2):
1676
"""This function is a scope container to pass
1677
func1 and func2 to the "call_both" function
1678
outside of its arguments"""
1680
@functools.wraps(func2)
1681
def call_both(*args, **kwargs):
1682
"""This function will emit two D-Bus
1683
signals by calling func1 and func2"""
1684
func1(*args, **kwargs)
1685
func2(*args, **kwargs)
1686
# Make wrapper function look like a D-Bus
1688
for name, attr in inspect.getmembers(func2):
1689
if name.startswith("_dbus_"):
1690
setattr(call_both, name, attr)
1693
# Create the "call_both" function and add it to
1695
attr[attrname] = fixscope(attribute, new_function)
1696
# Is this a D-Bus method?
1697
elif getattr(attribute, "_dbus_is_method", False):
1698
# Create a new, but exactly alike, function
1699
# object. Decorate it to be a new D-Bus method
1700
# with the alternate D-Bus interface name. Add it
1703
dbus.service.method(
1705
attribute._dbus_in_signature,
1706
attribute._dbus_out_signature)
1707
(copy_function(attribute)))
1708
# Copy annotations, if any
1710
attr[attrname]._dbus_annotations = dict(
1711
attribute._dbus_annotations)
1712
except AttributeError:
1714
# Is this a D-Bus property?
1715
elif getattr(attribute, "_dbus_is_property", False):
1716
# Create a new, but exactly alike, function
1717
# object, and decorate it to be a new D-Bus
1718
# property with the alternate D-Bus interface
1719
# name. Add it to the class.
1720
attr[attrname] = (dbus_service_property(
1721
alt_interface, attribute._dbus_signature,
1722
attribute._dbus_access,
1723
attribute._dbus_get_args_options
1725
(copy_function(attribute)))
1726
# Copy annotations, if any
1728
attr[attrname]._dbus_annotations = dict(
1729
attribute._dbus_annotations)
1730
except AttributeError:
1732
# Is this a D-Bus interface?
1733
elif getattr(attribute, "_dbus_is_interface", False):
1734
# Create a new, but exactly alike, function
1735
# object. Decorate it to be a new D-Bus interface
1736
# with the alternate D-Bus interface name. Add it
1739
dbus_interface_annotations(alt_interface)
1740
(copy_function(attribute)))
1742
# Deprecate all alternate interfaces
1743
iname = "_AlternateDBusNames_interface_annotation{}"
1744
for interface_name in interface_names:
1746
@dbus_interface_annotations(interface_name)
1748
return {"org.freedesktop.DBus.Deprecated":
1750
# Find an unused name
1751
for aname in (iname.format(i)
1752
for i in itertools.count()):
1753
if aname not in attr:
1757
# Replace the class with a new subclass of it with
1758
# methods, signals, etc. as created above.
1759
if sys.version_info.major == 2:
1760
cls = type(b"{}Alternate".format(cls.__name__),
1763
cls = type("{}Alternate".format(cls.__name__),
1770
@alternate_dbus_interfaces({"se.recompile.Mandos":
1771
"se.bsnet.fukt.Mandos"})
1772
class ClientDBus(Client, DBusObjectWithProperties):
1773
"""A Client class using D-Bus
1776
dbus_object_path: dbus.ObjectPath
1777
bus: dbus.SystemBus()
1780
runtime_expansions = (Client.runtime_expansions
1781
+ ("dbus_object_path", ))
1783
_interface = "se.recompile.Mandos.Client"
1785
# dbus.service.Object doesn't use super(), so we can't either.
1787
def __init__(self, bus=None, *args, **kwargs):
1789
Client.__init__(self, *args, **kwargs)
1790
# Only now, when this client is initialized, can it show up on
1792
client_object_name = str(self.name).translate(
1793
{ord("."): ord("_"),
1794
ord("-"): ord("_")})
1795
self.dbus_object_path = dbus.ObjectPath(
1796
"/clients/" + client_object_name)
1797
DBusObjectWithProperties.__init__(self, self.bus,
1798
self.dbus_object_path)
1800
def notifychangeproperty(transform_func, dbus_name,
1801
type_func=lambda x: x,
1803
invalidate_only=False,
1804
_interface=_interface):
1805
""" Modify a variable so that it's a property which announces
1806
its changes to DBus.
1808
transform_fun: Function that takes a value and a variant_level
1809
and transforms it to a D-Bus type.
1810
dbus_name: D-Bus name of the variable
1811
type_func: Function that transform the value before sending it
1812
to the D-Bus. Default: no transform
1813
variant_level: D-Bus variant level. Default: 1
1815
attrname = "_{}".format(dbus_name)
1817
def setter(self, value):
1818
if hasattr(self, "dbus_object_path"):
1819
if (not hasattr(self, attrname) or
1820
type_func(getattr(self, attrname, None))
1821
!= type_func(value)):
1823
self.PropertiesChanged(
1824
_interface, dbus.Dictionary(),
1825
dbus.Array((dbus_name, )))
1827
dbus_value = transform_func(
1829
variant_level=variant_level)
1830
self.PropertyChanged(dbus.String(dbus_name),
1832
self.PropertiesChanged(
1834
dbus.Dictionary({dbus.String(dbus_name):
1837
setattr(self, attrname, value)
1839
return property(lambda self: getattr(self, attrname), setter)
1841
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1842
approvals_pending = notifychangeproperty(dbus.Boolean,
1845
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1846
last_enabled = notifychangeproperty(datetime_to_dbus,
1848
checker = notifychangeproperty(
1849
dbus.Boolean, "CheckerRunning",
1850
type_func=lambda checker: checker is not None)
1851
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1853
last_checker_status = notifychangeproperty(dbus.Int16,
1854
"LastCheckerStatus")
1855
last_approval_request = notifychangeproperty(
1856
datetime_to_dbus, "LastApprovalRequest")
1857
approved_by_default = notifychangeproperty(dbus.Boolean,
1858
"ApprovedByDefault")
1859
approval_delay = notifychangeproperty(
1860
dbus.UInt64, "ApprovalDelay",
1861
type_func=lambda td: td.total_seconds() * 1000)
1862
approval_duration = notifychangeproperty(
1863
dbus.UInt64, "ApprovalDuration",
1864
type_func=lambda td: td.total_seconds() * 1000)
1865
host = notifychangeproperty(dbus.String, "Host")
1866
timeout = notifychangeproperty(
1867
dbus.UInt64, "Timeout",
1868
type_func=lambda td: td.total_seconds() * 1000)
1869
extended_timeout = notifychangeproperty(
1870
dbus.UInt64, "ExtendedTimeout",
1871
type_func=lambda td: td.total_seconds() * 1000)
1872
interval = notifychangeproperty(
1873
dbus.UInt64, "Interval",
1874
type_func=lambda td: td.total_seconds() * 1000)
1875
checker_command = notifychangeproperty(dbus.String, "Checker")
1876
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1877
invalidate_only=True)
1879
del notifychangeproperty
1881
def __del__(self, *args, **kwargs):
1883
self.remove_from_connection()
1886
if hasattr(DBusObjectWithProperties, "__del__"):
1887
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1888
Client.__del__(self, *args, **kwargs)
1890
def checker_callback(self, source, condition,
1891
connection, command, *args, **kwargs):
1892
ret = Client.checker_callback(self, source, condition,
1893
connection, command, *args,
1895
exitstatus = self.last_checker_status
1898
self.CheckerCompleted(dbus.Int16(exitstatus),
1899
# This is specific to GNU libC
1900
dbus.Int64(exitstatus << 8),
1901
dbus.String(command))
1904
self.CheckerCompleted(dbus.Int16(-1),
1906
# This is specific to GNU libC
1908
| self.last_checker_signal),
1909
dbus.String(command))
1912
def start_checker(self, *args, **kwargs):
1913
old_checker_pid = getattr(self.checker, "pid", None)
1914
r = Client.start_checker(self, *args, **kwargs)
1915
# Only if new checker process was started
1916
if (self.checker is not None
1917
and old_checker_pid != self.checker.pid):
1919
self.CheckerStarted(self.current_checker_command)
1922
def _reset_approved(self):
1923
self.approved = None
1926
def approve(self, value=True):
1927
self.approved = value
1928
GLib.timeout_add(int(self.approval_duration.total_seconds()
1929
* 1000), self._reset_approved)
1930
self.send_changedstate()
1932
# D-Bus methods, signals & properties
1938
# CheckerCompleted - signal
1939
@dbus.service.signal(_interface, signature="nxs")
1940
def CheckerCompleted(self, exitcode, waitstatus, command):
1944
# CheckerStarted - signal
1945
@dbus.service.signal(_interface, signature="s")
1946
def CheckerStarted(self, command):
1950
# PropertyChanged - signal
1951
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1952
@dbus.service.signal(_interface, signature="sv")
1953
def PropertyChanged(self, property, value):
1957
# GotSecret - signal
1958
@dbus.service.signal(_interface)
1959
def GotSecret(self):
1961
Is sent after a successful transfer of secret from the Mandos
1962
server to mandos-client
1967
@dbus.service.signal(_interface, signature="s")
1968
def Rejected(self, reason):
1972
# NeedApproval - signal
1973
@dbus.service.signal(_interface, signature="tb")
1974
def NeedApproval(self, timeout, default):
1976
return self.need_approval()
1981
@dbus.service.method(_interface, in_signature="b")
1982
def Approve(self, value):
1985
# CheckedOK - method
1986
@dbus.service.method(_interface)
1987
def CheckedOK(self):
1991
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1992
@dbus.service.method(_interface)
1997
# StartChecker - method
1998
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1999
@dbus.service.method(_interface)
2000
def StartChecker(self):
2002
self.start_checker()
2005
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2006
@dbus.service.method(_interface)
2011
# StopChecker - method
2012
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2013
@dbus.service.method(_interface)
2014
def StopChecker(self):
2019
# ApprovalPending - property
2020
@dbus_service_property(_interface, signature="b", access="read")
2021
def ApprovalPending_dbus_property(self):
2022
return dbus.Boolean(bool(self.approvals_pending))
2024
# ApprovedByDefault - property
2025
@dbus_service_property(_interface,
2028
def ApprovedByDefault_dbus_property(self, value=None):
2029
if value is None: # get
2030
return dbus.Boolean(self.approved_by_default)
2031
self.approved_by_default = bool(value)
2033
# ApprovalDelay - property
2034
@dbus_service_property(_interface,
2037
def ApprovalDelay_dbus_property(self, value=None):
2038
if value is None: # get
2039
return dbus.UInt64(self.approval_delay.total_seconds()
2041
self.approval_delay = datetime.timedelta(0, 0, 0, value)
2043
# ApprovalDuration - property
2044
@dbus_service_property(_interface,
2047
def ApprovalDuration_dbus_property(self, value=None):
2048
if value is None: # get
2049
return dbus.UInt64(self.approval_duration.total_seconds()
2051
self.approval_duration = datetime.timedelta(0, 0, 0, value)
2055
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2056
@dbus_service_property(_interface, signature="s", access="read")
2057
def Name_dbus_property(self):
2058
return dbus.String(self.name)
2062
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2063
@dbus_service_property(_interface, signature="s", access="read")
2064
def KeyID_dbus_property(self):
2065
return dbus.String(self.key_id)
2067
# Fingerprint - property
2069
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2070
@dbus_service_property(_interface, signature="s", access="read")
2071
def Fingerprint_dbus_property(self):
2072
return dbus.String(self.fingerprint)
2075
@dbus_service_property(_interface,
2078
def Host_dbus_property(self, value=None):
2079
if value is None: # get
2080
return dbus.String(self.host)
2081
self.host = str(value)
2083
# Created - property
2085
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2086
@dbus_service_property(_interface, signature="s", access="read")
2087
def Created_dbus_property(self):
2088
return datetime_to_dbus(self.created)
2090
# LastEnabled - property
2091
@dbus_service_property(_interface, signature="s", access="read")
2092
def LastEnabled_dbus_property(self):
2093
return datetime_to_dbus(self.last_enabled)
2095
# Enabled - property
2096
@dbus_service_property(_interface,
2099
def Enabled_dbus_property(self, value=None):
2100
if value is None: # get
2101
return dbus.Boolean(self.enabled)
2107
# LastCheckedOK - property
2108
@dbus_service_property(_interface,
2111
def LastCheckedOK_dbus_property(self, value=None):
2112
if value is not None:
2115
return datetime_to_dbus(self.last_checked_ok)
2117
# LastCheckerStatus - property
2118
@dbus_service_property(_interface, signature="n", access="read")
2119
def LastCheckerStatus_dbus_property(self):
2120
return dbus.Int16(self.last_checker_status)
2122
# Expires - property
2123
@dbus_service_property(_interface, signature="s", access="read")
2124
def Expires_dbus_property(self):
2125
return datetime_to_dbus(self.expires)
2127
# LastApprovalRequest - property
2128
@dbus_service_property(_interface, signature="s", access="read")
2129
def LastApprovalRequest_dbus_property(self):
2130
return datetime_to_dbus(self.last_approval_request)
2132
# Timeout - property
2133
@dbus_service_property(_interface,
2136
def Timeout_dbus_property(self, value=None):
2137
if value is None: # get
2138
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2139
old_timeout = self.timeout
2140
self.timeout = datetime.timedelta(0, 0, 0, value)
2141
# Reschedule disabling
2143
now = datetime.datetime.utcnow()
2144
self.expires += self.timeout - old_timeout
2145
if self.expires <= now:
2146
# The timeout has passed
2149
if (getattr(self, "disable_initiator_tag", None)
2152
GLib.source_remove(self.disable_initiator_tag)
2153
self.disable_initiator_tag = GLib.timeout_add(
2154
int((self.expires - now).total_seconds() * 1000),
2157
# ExtendedTimeout - property
2158
@dbus_service_property(_interface,
2161
def ExtendedTimeout_dbus_property(self, value=None):
2162
if value is None: # get
2163
return dbus.UInt64(self.extended_timeout.total_seconds()
2165
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2167
# Interval - property
2168
@dbus_service_property(_interface,
2171
def Interval_dbus_property(self, value=None):
2172
if value is None: # get
2173
return dbus.UInt64(self.interval.total_seconds() * 1000)
2174
self.interval = datetime.timedelta(0, 0, 0, value)
2175
if getattr(self, "checker_initiator_tag", None) is None:
2178
# Reschedule checker run
2179
GLib.source_remove(self.checker_initiator_tag)
2180
self.checker_initiator_tag = GLib.timeout_add(
2181
value, self.start_checker)
2182
self.start_checker() # Start one now, too
2184
# Checker - property
2185
@dbus_service_property(_interface,
2188
def Checker_dbus_property(self, value=None):
2189
if value is None: # get
2190
return dbus.String(self.checker_command)
2191
self.checker_command = str(value)
2193
# CheckerRunning - property
2194
@dbus_service_property(_interface,
2197
def CheckerRunning_dbus_property(self, value=None):
2198
if value is None: # get
2199
return dbus.Boolean(self.checker is not None)
2201
self.start_checker()
2205
# ObjectPath - property
2207
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2208
"org.freedesktop.DBus.Deprecated": "true"})
2209
@dbus_service_property(_interface, signature="o", access="read")
2210
def ObjectPath_dbus_property(self):
2211
return self.dbus_object_path # is already a dbus.ObjectPath
2215
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2217
@dbus_service_property(_interface,
2221
def Secret_dbus_property(self, value):
2222
self.secret = bytes(value)
2228
def __init__(self, child_pipe, key_id, fpr, address):
2229
self._pipe = child_pipe
2230
self._pipe.send(('init', key_id, fpr, address))
2231
if not self._pipe.recv():
2232
raise KeyError(key_id or fpr)
2234
def __getattribute__(self, name):
2236
return super(ProxyClient, self).__getattribute__(name)
2237
self._pipe.send(('getattr', name))
2238
data = self._pipe.recv()
2239
if data[0] == 'data':
2241
if data[0] == 'function':
2243
def func(*args, **kwargs):
2244
self._pipe.send(('funcall', name, args, kwargs))
2245
return self._pipe.recv()[1]
2249
def __setattr__(self, name, value):
2251
return super(ProxyClient, self).__setattr__(name, value)
2252
self._pipe.send(('setattr', name, value))
2255
class ClientHandler(socketserver.BaseRequestHandler, object):
2256
"""A class to handle client connections.
2258
Instantiated once for each connection to handle it.
549
2259
Note: This will run in its own forked process."""
551
2261
def handle(self):
552
logger.info(u"TCP connection from: %s",
553
unicode(self.client_address))
554
session = gnutls.connection.ClientSession\
555
(self.request, gnutls.connection.X509Credentials())
557
line = self.request.makefile().readline()
558
logger.debug(u"Protocol version: %r", line)
560
if int(line.strip().split()[0]) > 1:
562
except (ValueError, IndexError, RuntimeError), error:
563
logger.error(u"Unknown protocol version: %s", error)
566
# Note: gnutls.connection.X509Credentials is really a generic
567
# GnuTLS certificate credentials object so long as no X.509
568
# keys are added to it. Therefore, we can use it here despite
569
# using OpenPGP certificates.
571
#priority = ':'.join(("NONE", "+VERS-TLS1.1", "+AES-256-CBC",
572
# "+SHA1", "+COMP-NULL", "+CTYPE-OPENPGP",
574
# Use a fallback default, since this MUST be set.
575
priority = self.server.settings.get("priority", "NORMAL")
576
gnutls.library.functions.gnutls_priority_set_direct\
577
(session._c_object, priority, None)
581
except gnutls.errors.GNUTLSError, error:
582
logger.warning(u"Handshake failed: %s", error)
583
# Do not run session.bye() here: the session is not
584
# established. Just abandon the request.
587
fpr = fingerprint(peer_certificate(session))
588
except (TypeError, gnutls.errors.GNUTLSError), error:
589
logger.warning(u"Bad certificate: %s", error)
592
logger.debug(u"Fingerprint: %s", fpr)
594
for c in self.server.clients:
595
if c.fingerprint == fpr:
599
logger.warning(u"Client not found for fingerprint: %s",
603
# Have to check if client.still_valid(), since it is possible
604
# that the client timed out while establishing the GnuTLS
606
if not client.still_valid():
607
logger.warning(u"Client %(name)s is invalid",
611
## This won't work here, since we're in a fork.
612
# client.bump_timeout()
614
while sent_size < len(client.secret):
615
sent = session.send(client.secret[sent_size:])
616
logger.debug(u"Sent: %d, remaining: %d",
617
sent, len(client.secret)
618
- (sent_size + sent))
623
class IPv6_TCPServer(SocketServer.ForkingMixIn,
624
SocketServer.TCPServer, object):
625
"""IPv6 TCP server. Accepts 'None' as address and/or port.
2262
with contextlib.closing(self.server.child_pipe) as child_pipe:
2263
logger.info("TCP connection from: %s",
2264
str(self.client_address))
2265
logger.debug("Pipe FD: %d",
2266
self.server.child_pipe.fileno())
2268
session = gnutls.ClientSession(self.request)
2270
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2271
# "+AES-256-CBC", "+SHA1",
2272
# "+COMP-NULL", "+CTYPE-OPENPGP",
2274
# Use a fallback default, since this MUST be set.
2275
priority = self.server.gnutls_priority
2276
if priority is None:
2278
gnutls.priority_set_direct(session._c_object,
2279
priority.encode("utf-8"),
2282
# Start communication using the Mandos protocol
2283
# Get protocol number
2284
line = self.request.makefile().readline()
2285
logger.debug("Protocol version: %r", line)
2287
if int(line.strip().split()[0]) > 1:
2288
raise RuntimeError(line)
2289
except (ValueError, IndexError, RuntimeError) as error:
2290
logger.error("Unknown protocol version: %s", error)
2293
# Start GnuTLS connection
2296
except gnutls.Error as error:
2297
logger.warning("Handshake failed: %s", error)
2298
# Do not run session.bye() here: the session is not
2299
# established. Just abandon the request.
2301
logger.debug("Handshake succeeded")
2303
approval_required = False
2305
if gnutls.has_rawpk:
2308
key_id = self.key_id(
2309
self.peer_certificate(session))
2310
except (TypeError, gnutls.Error) as error:
2311
logger.warning("Bad certificate: %s", error)
2313
logger.debug("Key ID: %s", key_id)
2318
fpr = self.fingerprint(
2319
self.peer_certificate(session))
2320
except (TypeError, gnutls.Error) as error:
2321
logger.warning("Bad certificate: %s", error)
2323
logger.debug("Fingerprint: %s", fpr)
2326
client = ProxyClient(child_pipe, key_id, fpr,
2327
self.client_address)
2331
if client.approval_delay:
2332
delay = client.approval_delay
2333
client.approvals_pending += 1
2334
approval_required = True
2337
if not client.enabled:
2338
logger.info("Client %s is disabled",
2340
if self.server.use_dbus:
2342
client.Rejected("Disabled")
2345
if client.approved or not client.approval_delay:
2346
# We are approved or approval is disabled
2348
elif client.approved is None:
2349
logger.info("Client %s needs approval",
2351
if self.server.use_dbus:
2353
client.NeedApproval(
2354
client.approval_delay.total_seconds()
2355
* 1000, client.approved_by_default)
2357
logger.warning("Client %s was not approved",
2359
if self.server.use_dbus:
2361
client.Rejected("Denied")
2364
# wait until timeout or approved
2365
time = datetime.datetime.now()
2366
client.changedstate.acquire()
2367
client.changedstate.wait(delay.total_seconds())
2368
client.changedstate.release()
2369
time2 = datetime.datetime.now()
2370
if (time2 - time) >= delay:
2371
if not client.approved_by_default:
2372
logger.warning("Client %s timed out while"
2373
" waiting for approval",
2375
if self.server.use_dbus:
2377
client.Rejected("Approval timed out")
2382
delay -= time2 - time
2385
session.send(client.secret)
2386
except gnutls.Error as error:
2387
logger.warning("gnutls send failed",
2391
logger.info("Sending secret to %s", client.name)
2392
# bump the timeout using extended_timeout
2393
client.bump_timeout(client.extended_timeout)
2394
if self.server.use_dbus:
2399
if approval_required:
2400
client.approvals_pending -= 1
2403
except gnutls.Error as error:
2404
logger.warning("GnuTLS bye failed",
2408
def peer_certificate(session):
2409
"Return the peer's certificate as a bytestring"
2411
cert_type = gnutls.certificate_type_get2(session._c_object,
2413
except AttributeError:
2414
cert_type = gnutls.certificate_type_get(session._c_object)
2415
if gnutls.has_rawpk:
2416
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2418
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2419
# If not a valid certificate type...
2420
if cert_type not in valid_cert_types:
2421
logger.info("Cert type %r not in %r", cert_type,
2423
# ...return invalid data
2425
list_size = ctypes.c_uint(1)
2426
cert_list = (gnutls.certificate_get_peers
2427
(session._c_object, ctypes.byref(list_size)))
2428
if not bool(cert_list) and list_size.value != 0:
2429
raise gnutls.Error("error getting peer certificate")
2430
if list_size.value == 0:
2433
return ctypes.string_at(cert.data, cert.size)
2436
def key_id(certificate):
2437
"Convert a certificate bytestring to a hexdigit key ID"
2438
# New GnuTLS "datum" with the public key
2439
datum = gnutls.datum_t(
2440
ctypes.cast(ctypes.c_char_p(certificate),
2441
ctypes.POINTER(ctypes.c_ubyte)),
2442
ctypes.c_uint(len(certificate)))
2443
# XXX all these need to be created in the gnutls "module"
2444
# New empty GnuTLS certificate
2445
pubkey = gnutls.pubkey_t()
2446
gnutls.pubkey_init(ctypes.byref(pubkey))
2447
# Import the raw public key into the certificate
2448
gnutls.pubkey_import(pubkey,
2449
ctypes.byref(datum),
2450
gnutls.X509_FMT_DER)
2451
# New buffer for the key ID
2452
buf = ctypes.create_string_buffer(32)
2453
buf_len = ctypes.c_size_t(len(buf))
2454
# Get the key ID from the raw public key into the buffer
2455
gnutls.pubkey_get_key_id(pubkey,
2456
gnutls.KEYID_USE_SHA256,
2457
ctypes.cast(ctypes.byref(buf),
2458
ctypes.POINTER(ctypes.c_ubyte)),
2459
ctypes.byref(buf_len))
2460
# Deinit the certificate
2461
gnutls.pubkey_deinit(pubkey)
2463
# Convert the buffer to a Python bytestring
2464
key_id = ctypes.string_at(buf, buf_len.value)
2465
# Convert the bytestring to hexadecimal notation
2466
hex_key_id = binascii.hexlify(key_id).upper()
2470
def fingerprint(openpgp):
2471
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2472
# New GnuTLS "datum" with the OpenPGP public key
2473
datum = gnutls.datum_t(
2474
ctypes.cast(ctypes.c_char_p(openpgp),
2475
ctypes.POINTER(ctypes.c_ubyte)),
2476
ctypes.c_uint(len(openpgp)))
2477
# New empty GnuTLS certificate
2478
crt = gnutls.openpgp_crt_t()
2479
gnutls.openpgp_crt_init(ctypes.byref(crt))
2480
# Import the OpenPGP public key into the certificate
2481
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2482
gnutls.OPENPGP_FMT_RAW)
2483
# Verify the self signature in the key
2484
crtverify = ctypes.c_uint()
2485
gnutls.openpgp_crt_verify_self(crt, 0,
2486
ctypes.byref(crtverify))
2487
if crtverify.value != 0:
2488
gnutls.openpgp_crt_deinit(crt)
2489
raise gnutls.CertificateSecurityError(code
2491
# New buffer for the fingerprint
2492
buf = ctypes.create_string_buffer(20)
2493
buf_len = ctypes.c_size_t()
2494
# Get the fingerprint from the certificate into the buffer
2495
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2496
ctypes.byref(buf_len))
2497
# Deinit the certificate
2498
gnutls.openpgp_crt_deinit(crt)
2499
# Convert the buffer to a Python bytestring
2500
fpr = ctypes.string_at(buf, buf_len.value)
2501
# Convert the bytestring to hexadecimal notation
2502
hex_fpr = binascii.hexlify(fpr).upper()
2506
class MultiprocessingMixIn:
2507
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2509
def sub_process_main(self, request, address):
2511
self.finish_request(request, address)
2513
self.handle_error(request, address)
2514
self.close_request(request)
2516
def process_request(self, request, address):
2517
"""Start a new process to process the request."""
2518
proc = multiprocessing.Process(target=self.sub_process_main,
2519
args=(request, address))
2524
class MultiprocessingMixInWithPipe(MultiprocessingMixIn):
2525
""" adds a pipe to the MixIn """
2527
def process_request(self, request, client_address):
2528
"""Overrides and wraps the original process_request().
2530
This function creates a new pipe in self.pipe
2532
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2534
proc = MultiprocessingMixIn.process_request(self, request,
2536
self.child_pipe.close()
2537
self.add_pipe(parent_pipe, proc)
2539
def add_pipe(self, parent_pipe, proc):
2540
"""Dummy function; override as necessary"""
2541
raise NotImplementedError()
2544
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2545
socketserver.TCPServer):
2546
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
627
settings: Server settings
628
clients: Set() of Client objects
629
2549
enabled: Boolean; whether this server is activated yet
2550
interface: None or a network interface name (string)
2551
use_ipv6: Boolean; to use IPv6 or not
631
address_family = socket.AF_INET6
632
def __init__(self, *args, **kwargs):
633
if "settings" in kwargs:
634
self.settings = kwargs["settings"]
635
del kwargs["settings"]
636
if "clients" in kwargs:
637
self.clients = kwargs["clients"]
638
del kwargs["clients"]
640
super(IPv6_TCPServer, self).__init__(*args, **kwargs)
2554
def __init__(self, server_address, RequestHandlerClass,
2558
"""If socketfd is set, use that file descriptor instead of
2559
creating a new one with socket.socket().
2561
self.interface = interface
2563
self.address_family = socket.AF_INET6
2564
if socketfd is not None:
2565
# Save the file descriptor
2566
self.socketfd = socketfd
2567
# Save the original socket.socket() function
2568
self.socket_socket = socket.socket
2570
# To implement --socket, we monkey patch socket.socket.
2572
# (When socketserver.TCPServer is a new-style class, we
2573
# could make self.socket into a property instead of monkey
2574
# patching socket.socket.)
2576
# Create a one-time-only replacement for socket.socket()
2577
@functools.wraps(socket.socket)
2578
def socket_wrapper(*args, **kwargs):
2579
# Restore original function so subsequent calls are
2581
socket.socket = self.socket_socket
2582
del self.socket_socket
2583
# This time only, return a new socket object from the
2584
# saved file descriptor.
2585
return socket.fromfd(self.socketfd, *args, **kwargs)
2586
# Replace socket.socket() function with wrapper
2587
socket.socket = socket_wrapper
2588
# The socketserver.TCPServer.__init__ will call
2589
# socket.socket(), which might be our replacement,
2590
# socket_wrapper(), if socketfd was set.
2591
socketserver.TCPServer.__init__(self, server_address,
2592
RequestHandlerClass)
641
2594
def server_bind(self):
642
2595
"""This overrides the normal server_bind() function
643
2596
to bind to an interface if one was specified, and also NOT to
644
2597
bind to an address or port if they were not specified."""
645
if self.settings["interface"]:
646
# 25 is from /usr/include/asm-i486/socket.h
647
SO_BINDTODEVICE = getattr(socket, "SO_BINDTODEVICE", 25)
2598
global SO_BINDTODEVICE
2599
if self.interface is not None:
2600
if SO_BINDTODEVICE is None:
2601
# Fall back to a hard-coded value which seems to be
2603
logger.warning("SO_BINDTODEVICE not found, trying 25")
2604
SO_BINDTODEVICE = 25
649
self.socket.setsockopt(socket.SOL_SOCKET,
651
self.settings["interface"])
652
except socket.error, error:
653
if error[0] == errno.EPERM:
654
logger.error(u"No permission to"
655
u" bind to interface %s",
656
self.settings["interface"])
2606
self.socket.setsockopt(
2607
socket.SOL_SOCKET, SO_BINDTODEVICE,
2608
(self.interface + "\0").encode("utf-8"))
2609
except socket.error as error:
2610
if error.errno == errno.EPERM:
2611
logger.error("No permission to bind to"
2612
" interface %s", self.interface)
2613
elif error.errno == errno.ENOPROTOOPT:
2614
logger.error("SO_BINDTODEVICE not available;"
2615
" cannot bind to interface %s",
2617
elif error.errno == errno.ENODEV:
2618
logger.error("Interface %s does not exist,"
2619
" cannot bind", self.interface)
659
2622
# Only bind(2) the socket if we really need to.
660
2623
if self.server_address[0] or self.server_address[1]:
2624
if self.server_address[1]:
2625
self.allow_reuse_address = True
661
2626
if not self.server_address[0]:
663
self.server_address = (in6addr_any,
2627
if self.address_family == socket.AF_INET6:
2628
any_address = "::" # in6addr_any
2630
any_address = "0.0.0.0" # INADDR_ANY
2631
self.server_address = (any_address,
664
2632
self.server_address[1])
665
2633
elif not self.server_address[1]:
666
self.server_address = (self.server_address[0],
668
# if self.settings["interface"]:
2634
self.server_address = (self.server_address[0], 0)
2635
# if self.interface:
669
2636
# self.server_address = (self.server_address[0],
672
2639
# if_nametoindex
675
return super(IPv6_TCPServer, self).server_bind()
2641
return socketserver.TCPServer.server_bind(self)
2644
class MandosServer(IPv6_TCPServer):
2648
clients: set of Client objects
2649
gnutls_priority GnuTLS priority string
2650
use_dbus: Boolean; to emit D-Bus signals or not
2652
Assumes a GLib.MainLoop event loop.
2655
def __init__(self, server_address, RequestHandlerClass,
2659
gnutls_priority=None,
2662
self.enabled = False
2663
self.clients = clients
2664
if self.clients is None:
2666
self.use_dbus = use_dbus
2667
self.gnutls_priority = gnutls_priority
2668
IPv6_TCPServer.__init__(self, server_address,
2669
RequestHandlerClass,
2670
interface=interface,
676
2674
def server_activate(self):
677
2675
if self.enabled:
678
return super(IPv6_TCPServer, self).server_activate()
2676
return socketserver.TCPServer.server_activate(self)
679
2678
def enable(self):
680
2679
self.enabled = True
2681
def add_pipe(self, parent_pipe, proc):
2682
# Call "handle_ipc" for both data and EOF events
2684
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2685
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2686
functools.partial(self.handle_ipc,
2687
parent_pipe=parent_pipe,
2690
def handle_ipc(self, source, condition,
2693
client_object=None):
2694
# error, or the other end of multiprocessing.Pipe has closed
2695
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2696
# Wait for other process to exit
2700
# Read a request from the child
2701
request = parent_pipe.recv()
2702
command = request[0]
2704
if command == 'init':
2705
key_id = request[1].decode("ascii")
2706
fpr = request[2].decode("ascii")
2707
address = request[3]
2709
for c in self.clients.values():
2710
if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2712
if key_id and c.key_id == key_id:
2715
if fpr and c.fingerprint == fpr:
2719
logger.info("Client not found for key ID: %s, address"
2720
": %s", key_id or fpr, address)
2723
mandos_dbus_service.ClientNotFound(key_id or fpr,
2725
parent_pipe.send(False)
2729
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2730
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2731
functools.partial(self.handle_ipc,
2732
parent_pipe=parent_pipe,
2734
client_object=client))
2735
parent_pipe.send(True)
2736
# remove the old hook in favor of the new above hook on
2739
if command == 'funcall':
2740
funcname = request[1]
2744
parent_pipe.send(('data', getattr(client_object,
2748
if command == 'getattr':
2749
attrname = request[1]
2750
if isinstance(client_object.__getattribute__(attrname),
2751
collections.Callable):
2752
parent_pipe.send(('function', ))
2755
'data', client_object.__getattribute__(attrname)))
2757
if command == 'setattr':
2758
attrname = request[1]
2760
setattr(client_object, attrname, value)
2765
def rfc3339_duration_to_delta(duration):
2766
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2768
>>> rfc3339_duration_to_delta("P7D") == datetime.timedelta(7)
2770
>>> rfc3339_duration_to_delta("PT60S") == datetime.timedelta(0, 60)
2772
>>> rfc3339_duration_to_delta("PT60M") == datetime.timedelta(0, 3600)
2774
>>> rfc3339_duration_to_delta("PT24H") == datetime.timedelta(1)
2776
>>> rfc3339_duration_to_delta("P1W") == datetime.timedelta(7)
2778
>>> rfc3339_duration_to_delta("PT5M30S") == datetime.timedelta(0, 330)
2780
>>> rfc3339_duration_to_delta("P1DT3M20S") == datetime.timedelta(1, 200)
2784
# Parsing an RFC 3339 duration with regular expressions is not
2785
# possible - there would have to be multiple places for the same
2786
# values, like seconds. The current code, while more esoteric, is
2787
# cleaner without depending on a parsing library. If Python had a
2788
# built-in library for parsing we would use it, but we'd like to
2789
# avoid excessive use of external libraries.
2791
# New type for defining tokens, syntax, and semantics all-in-one
2792
Token = collections.namedtuple("Token", (
2793
"regexp", # To match token; if "value" is not None, must have
2794
# a "group" containing digits
2795
"value", # datetime.timedelta or None
2796
"followers")) # Tokens valid after this token
2797
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2798
# the "duration" ABNF definition in RFC 3339, Appendix A.
2799
token_end = Token(re.compile(r"$"), None, frozenset())
2800
token_second = Token(re.compile(r"(\d+)S"),
2801
datetime.timedelta(seconds=1),
2802
frozenset((token_end, )))
2803
token_minute = Token(re.compile(r"(\d+)M"),
2804
datetime.timedelta(minutes=1),
2805
frozenset((token_second, token_end)))
2806
token_hour = Token(re.compile(r"(\d+)H"),
2807
datetime.timedelta(hours=1),
2808
frozenset((token_minute, token_end)))
2809
token_time = Token(re.compile(r"T"),
2811
frozenset((token_hour, token_minute,
2813
token_day = Token(re.compile(r"(\d+)D"),
2814
datetime.timedelta(days=1),
2815
frozenset((token_time, token_end)))
2816
token_month = Token(re.compile(r"(\d+)M"),
2817
datetime.timedelta(weeks=4),
2818
frozenset((token_day, token_end)))
2819
token_year = Token(re.compile(r"(\d+)Y"),
2820
datetime.timedelta(weeks=52),
2821
frozenset((token_month, token_end)))
2822
token_week = Token(re.compile(r"(\d+)W"),
2823
datetime.timedelta(weeks=1),
2824
frozenset((token_end, )))
2825
token_duration = Token(re.compile(r"P"), None,
2826
frozenset((token_year, token_month,
2827
token_day, token_time,
2829
# Define starting values:
2831
value = datetime.timedelta()
2833
# Following valid tokens
2834
followers = frozenset((token_duration, ))
2835
# String left to parse
2837
# Loop until end token is found
2838
while found_token is not token_end:
2839
# Search for any currently valid tokens
2840
for token in followers:
2841
match = token.regexp.match(s)
2842
if match is not None:
2844
if token.value is not None:
2845
# Value found, parse digits
2846
factor = int(match.group(1), 10)
2847
# Add to value so far
2848
value += factor * token.value
2849
# Strip token from string
2850
s = token.regexp.sub("", s, 1)
2853
# Set valid next tokens
2854
followers = found_token.followers
2857
# No currently valid tokens were found
2858
raise ValueError("Invalid RFC 3339 duration: {!r}"
683
2864
def string_to_delta(interval):
684
2865
"""Parse a string and return a datetime.timedelta
686
>>> string_to_delta('7d')
687
datetime.timedelta(7)
688
>>> string_to_delta('60s')
689
datetime.timedelta(0, 60)
690
>>> string_to_delta('60m')
691
datetime.timedelta(0, 3600)
692
>>> string_to_delta('24h')
693
datetime.timedelta(1)
694
>>> string_to_delta(u'1w')
695
datetime.timedelta(7)
696
>>> string_to_delta('5m 30s')
697
datetime.timedelta(0, 330)
2867
>>> string_to_delta('7d') == datetime.timedelta(7)
2869
>>> string_to_delta('60s') == datetime.timedelta(0, 60)
2871
>>> string_to_delta('60m') == datetime.timedelta(0, 3600)
2873
>>> string_to_delta('24h') == datetime.timedelta(1)
2875
>>> string_to_delta('1w') == datetime.timedelta(7)
2877
>>> string_to_delta('5m 30s') == datetime.timedelta(0, 330)
2882
return rfc3339_duration_to_delta(interval)
699
2886
timevalue = datetime.timedelta(0)
700
2887
for s in interval.split():
702
suffix = unicode(s[-1])
703
2890
value = int(s[:-1])
705
2892
delta = datetime.timedelta(value)
707
2894
delta = datetime.timedelta(0, value)
709
2896
delta = datetime.timedelta(0, 0, 0, 0, value)
711
2898
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
713
2900
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
716
except (ValueError, IndexError):
2902
raise ValueError("Unknown suffix {!r}".format(suffix))
2903
except IndexError as e:
2904
raise ValueError(*(e.args))
718
2905
timevalue += delta
719
2906
return timevalue
722
def server_state_changed(state):
723
"""Derived from the Avahi example code"""
724
if state == avahi.SERVER_COLLISION:
725
logger.error(u"Zeroconf server name collision")
727
elif state == avahi.SERVER_RUNNING:
731
def entry_group_state_changed(state, error):
732
"""Derived from the Avahi example code"""
733
logger.debug(u"Avahi state change: %i", state)
735
if state == avahi.ENTRY_GROUP_ESTABLISHED:
736
logger.debug(u"Zeroconf service established.")
737
elif state == avahi.ENTRY_GROUP_COLLISION:
738
logger.warning(u"Zeroconf service name collision.")
740
elif state == avahi.ENTRY_GROUP_FAILURE:
741
logger.critical(u"Avahi: Error in group state changed %s",
743
raise AvahiGroupError("State changed: %s", str(error))
745
def if_nametoindex(interface):
746
"""Call the C function if_nametoindex(), or equivalent"""
747
global if_nametoindex
749
if_nametoindex = ctypes.cdll.LoadLibrary\
750
(ctypes.util.find_library("c")).if_nametoindex
751
except (OSError, AttributeError):
752
if "struct" not in sys.modules:
754
if "fcntl" not in sys.modules:
756
def if_nametoindex(interface):
757
"Get an interface index the hard way, i.e. using fcntl()"
758
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
759
with closing(socket.socket()) as s:
760
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
761
struct.pack("16s16x", interface))
762
interface_index = struct.unpack("I", ifreq[16:20])[0]
763
return interface_index
764
return if_nametoindex(interface)
767
def daemon(nochdir = False, noclose = False):
2909
def daemon(nochdir=False, noclose=False):
768
2910
"""See daemon(3). Standard BSD Unix function.
769
2912
This should really exist as os.daemon, but it doesn't (yet)."""
791
parser = OptionParser(version = "%%prog %s" % version)
792
parser.add_option("-i", "--interface", type="string",
793
metavar="IF", help="Bind to interface IF")
794
parser.add_option("-a", "--address", type="string",
795
help="Address to listen for requests on")
796
parser.add_option("-p", "--port", type="int",
797
help="Port number to receive requests on")
798
parser.add_option("--check", action="store_true", default=False,
799
help="Run self-test")
800
parser.add_option("--debug", action="store_true",
801
help="Debug mode; run in foreground and log to"
803
parser.add_option("--priority", type="string", help="GnuTLS"
804
" priority string (see GnuTLS documentation)")
805
parser.add_option("--servicename", type="string", metavar="NAME",
806
help="Zeroconf service name")
807
parser.add_option("--configdir", type="string",
808
default="/etc/mandos", metavar="DIR",
809
help="Directory to search for configuration"
811
options = parser.parse_args()[0]
2936
##################################################################
2937
# Parsing of options, both command line and config file
2939
parser = argparse.ArgumentParser()
2940
parser.add_argument("-v", "--version", action="version",
2941
version="%(prog)s {}".format(version),
2942
help="show version number and exit")
2943
parser.add_argument("-i", "--interface", metavar="IF",
2944
help="Bind to interface IF")
2945
parser.add_argument("-a", "--address",
2946
help="Address to listen for requests on")
2947
parser.add_argument("-p", "--port", type=int,
2948
help="Port number to receive requests on")
2949
parser.add_argument("--check", action="store_true",
2950
help="Run self-test")
2951
parser.add_argument("--debug", action="store_true",
2952
help="Debug mode; run in foreground and log"
2953
" to terminal", default=None)
2954
parser.add_argument("--debuglevel", metavar="LEVEL",
2955
help="Debug level for stdout output")
2956
parser.add_argument("--priority", help="GnuTLS"
2957
" priority string (see GnuTLS documentation)")
2958
parser.add_argument("--servicename",
2959
metavar="NAME", help="Zeroconf service name")
2960
parser.add_argument("--configdir",
2961
default="/etc/mandos", metavar="DIR",
2962
help="Directory to search for configuration"
2964
parser.add_argument("--no-dbus", action="store_false",
2965
dest="use_dbus", help="Do not provide D-Bus"
2966
" system bus interface", default=None)
2967
parser.add_argument("--no-ipv6", action="store_false",
2968
dest="use_ipv6", help="Do not use IPv6",
2970
parser.add_argument("--no-restore", action="store_false",
2971
dest="restore", help="Do not restore stored"
2972
" state", default=None)
2973
parser.add_argument("--socket", type=int,
2974
help="Specify a file descriptor to a network"
2975
" socket to use instead of creating one")
2976
parser.add_argument("--statedir", metavar="DIR",
2977
help="Directory to save/restore state in")
2978
parser.add_argument("--foreground", action="store_true",
2979
help="Run in foreground", default=None)
2980
parser.add_argument("--no-zeroconf", action="store_false",
2981
dest="zeroconf", help="Do not use Zeroconf",
2984
options = parser.parse_args()
818
2986
# Default values for config file for server-global settings
819
server_defaults = { "interface": "",
824
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
825
"servicename": "Mandos",
2987
if gnutls.has_rawpk:
2988
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
2989
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
2991
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2992
":+SIGN-DSA-SHA256")
2993
server_defaults = {"interface": "",
2997
"priority": priority,
2998
"servicename": "Mandos",
3004
"statedir": "/var/lib/mandos",
3005
"foreground": "False",
828
3010
# Parse config file for server-global settings
829
server_config = ConfigParser.SafeConfigParser(server_defaults)
3011
server_config = configparser.ConfigParser(server_defaults)
830
3012
del server_defaults
831
3013
server_config.read(os.path.join(options.configdir, "mandos.conf"))
832
# Convert the SafeConfigParser object to a dict
3014
# Convert the ConfigParser object to a dict
833
3015
server_settings = server_config.defaults()
834
# Use getboolean on the boolean config option
835
server_settings["debug"] = server_config.getboolean\
3016
# Use the appropriate methods on the non-string config options
3017
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3018
"foreground", "zeroconf"):
3019
server_settings[option] = server_config.getboolean("DEFAULT",
3021
if server_settings["port"]:
3022
server_settings["port"] = server_config.getint("DEFAULT",
3024
if server_settings["socket"]:
3025
server_settings["socket"] = server_config.getint("DEFAULT",
3027
# Later, stdin will, and stdout and stderr might, be dup'ed
3028
# over with an opened os.devnull. But we don't want this to
3029
# happen with a supplied network socket.
3030
if 0 <= server_settings["socket"] <= 2:
3031
server_settings["socket"] = os.dup(server_settings
837
3033
del server_config
839
3035
# Override the settings from the config file with command line
840
3036
# options, if set.
841
3037
for option in ("interface", "address", "port", "debug",
842
"priority", "servicename", "configdir"):
3038
"priority", "servicename", "configdir", "use_dbus",
3039
"use_ipv6", "debuglevel", "restore", "statedir",
3040
"socket", "foreground", "zeroconf"):
843
3041
value = getattr(options, option)
844
3042
if value is not None:
845
3043
server_settings[option] = value
3045
# Force all strings to be unicode
3046
for option in server_settings.keys():
3047
if isinstance(server_settings[option], bytes):
3048
server_settings[option] = (server_settings[option]
3050
# Force all boolean options to be boolean
3051
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3052
"foreground", "zeroconf"):
3053
server_settings[option] = bool(server_settings[option])
3054
# Debug implies foreground
3055
if server_settings["debug"]:
3056
server_settings["foreground"] = True
847
3057
# Now we have our good server settings in "server_settings"
3059
##################################################################
3061
if (not server_settings["zeroconf"]
3062
and not (server_settings["port"]
3063
or server_settings["socket"] != "")):
3064
parser.error("Needs port or socket to work without Zeroconf")
849
3067
debug = server_settings["debug"]
852
syslogger.setLevel(logging.WARNING)
853
console.setLevel(logging.WARNING)
3068
debuglevel = server_settings["debuglevel"]
3069
use_dbus = server_settings["use_dbus"]
3070
use_ipv6 = server_settings["use_ipv6"]
3071
stored_state_path = os.path.join(server_settings["statedir"],
3073
foreground = server_settings["foreground"]
3074
zeroconf = server_settings["zeroconf"]
3077
initlogger(debug, logging.DEBUG)
3082
level = getattr(logging, debuglevel.upper())
3083
initlogger(debug, level)
855
3085
if server_settings["servicename"] != "Mandos":
856
syslogger.setFormatter(logging.Formatter\
857
('Mandos (%s): %%(levelname)s:'
859
% server_settings["servicename"]))
3086
syslogger.setFormatter(
3087
logging.Formatter('Mandos ({}) [%(process)d]:'
3088
' %(levelname)s: %(message)s'.format(
3089
server_settings["servicename"])))
861
3091
# Parse config file with clients
862
client_defaults = { "timeout": "1h",
864
"checker": "fping -q -- %(host)s",
867
client_config = ConfigParser.SafeConfigParser(client_defaults)
3092
client_config = configparser.ConfigParser(Client.client_defaults)
868
3093
client_config.read(os.path.join(server_settings["configdir"],
869
3094
"clients.conf"))
872
tcp_server = IPv6_TCPServer((server_settings["address"],
873
server_settings["port"]),
875
settings=server_settings,
877
pidfilename = "/var/run/mandos.pid"
879
pidfile = open(pidfilename, "w")
880
except IOError, error:
881
logger.error("Could not open file %r", pidfilename)
886
uid = pwd.getpwnam("mandos").pw_uid
889
uid = pwd.getpwnam("nobody").pw_uid
893
gid = pwd.getpwnam("mandos").pw_gid
896
gid = pwd.getpwnam("nogroup").pw_gid
3096
global mandos_dbus_service
3097
mandos_dbus_service = None
3100
if server_settings["socket"] != "":
3101
socketfd = server_settings["socket"]
3102
tcp_server = MandosServer(
3103
(server_settings["address"], server_settings["port"]),
3105
interface=(server_settings["interface"] or None),
3107
gnutls_priority=server_settings["priority"],
3111
pidfilename = "/run/mandos.pid"
3112
if not os.path.isdir("/run/."):
3113
pidfilename = "/var/run/mandos.pid"
3116
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3117
except IOError as e:
3118
logger.error("Could not open file %r", pidfilename,
3121
for name, group in (("_mandos", "_mandos"),
3122
("mandos", "mandos"),
3123
("nobody", "nogroup")):
3125
uid = pwd.getpwnam(name).pw_uid
3126
gid = pwd.getpwnam(group).pw_gid
902
except OSError, error:
903
if error[0] != errno.EPERM:
907
service = AvahiService(name = server_settings["servicename"],
908
servicetype = "_mandos._tcp", )
909
if server_settings["interface"]:
910
service.interface = if_nametoindex\
911
(server_settings["interface"])
3137
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3139
except OSError as error:
3140
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3141
.format(uid, gid, os.strerror(error.errno)))
3142
if error.errno != errno.EPERM:
3146
# Enable all possible GnuTLS debugging
3148
# "Use a log level over 10 to enable all debugging options."
3150
gnutls.global_set_log_level(11)
3153
def debug_gnutls(level, string):
3154
logger.debug("GnuTLS: %s", string[:-1])
3156
gnutls.global_set_log_function(debug_gnutls)
3158
# Redirect stdin so all checkers get /dev/null
3159
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
3160
os.dup2(null, sys.stdin.fileno())
3164
# Need to fork before connecting to D-Bus
3166
# Close all input and output, do double fork, etc.
3169
if gi.version_info < (3, 10, 2):
3170
# multiprocessing will use threads, so before we use GLib we
3171
# need to inform GLib that threads will be used.
913
3174
global main_loop
916
3175
# From the Avahi example code
917
DBusGMainLoop(set_as_default=True )
918
main_loop = gobject.MainLoop()
3176
DBusGMainLoop(set_as_default=True)
3177
main_loop = GLib.MainLoop()
919
3178
bus = dbus.SystemBus()
920
server = dbus.Interface(bus.get_object(avahi.DBUS_NAME,
921
avahi.DBUS_PATH_SERVER),
922
avahi.DBUS_INTERFACE_SERVER)
923
3179
# End of Avahi example code
925
def remove_from_clients(client):
926
clients.remove(client)
928
logger.critical(u"No clients left, exiting")
931
clients.update(Set(Client(name = section,
932
stop_hook = remove_from_clients,
934
= dict(client_config.items(section)))
935
for section in client_config.sections()))
937
logger.critical(u"No clients defined")
941
# Redirect stdin so all checkers get /dev/null
942
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
943
os.dup2(null, sys.stdin.fileno())
948
logger.removeHandler(console)
949
# Close all input and output, do double fork, etc.
954
pidfile.write(str(pid) + "\n")
3182
bus_name = dbus.service.BusName("se.recompile.Mandos",
3185
old_bus_name = dbus.service.BusName(
3186
"se.bsnet.fukt.Mandos", bus,
3188
except dbus.exceptions.DBusException as e:
3189
logger.error("Disabling D-Bus:", exc_info=e)
3191
server_settings["use_dbus"] = False
3192
tcp_server.use_dbus = False
3194
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3195
service = AvahiServiceToSyslog(
3196
name=server_settings["servicename"],
3197
servicetype="_mandos._tcp",
3200
if server_settings["interface"]:
3201
service.interface = if_nametoindex(
3202
server_settings["interface"].encode("utf-8"))
3204
global multiprocessing_manager
3205
multiprocessing_manager = multiprocessing.Manager()
3207
client_class = Client
3209
client_class = functools.partial(ClientDBus, bus=bus)
3211
client_settings = Client.config_parser(client_config)
3212
old_client_settings = {}
3215
# This is used to redirect stdout and stderr for checker processes
3217
wnull = open(os.devnull, "w") # A writable /dev/null
3218
# Only used if server is running in foreground but not in debug
3220
if debug or not foreground:
3223
# Get client data and settings from last running state.
3224
if server_settings["restore"]:
3226
with open(stored_state_path, "rb") as stored_state:
3227
if sys.version_info.major == 2:
3228
clients_data, old_client_settings = pickle.load(
3231
bytes_clients_data, bytes_old_client_settings = (
3232
pickle.load(stored_state, encoding="bytes"))
3233
# Fix bytes to strings
3236
clients_data = {(key.decode("utf-8")
3237
if isinstance(key, bytes)
3240
bytes_clients_data.items()}
3241
del bytes_clients_data
3242
for key in clients_data:
3243
value = {(k.decode("utf-8")
3244
if isinstance(k, bytes) else k): v
3246
clients_data[key].items()}
3247
clients_data[key] = value
3249
value["client_structure"] = [
3251
if isinstance(s, bytes)
3253
value["client_structure"]]
3254
# .name, .host, and .checker_command
3255
for k in ("name", "host", "checker_command"):
3256
if isinstance(value[k], bytes):
3257
value[k] = value[k].decode("utf-8")
3258
if "key_id" not in value:
3259
value["key_id"] = ""
3260
elif "fingerprint" not in value:
3261
value["fingerprint"] = ""
3262
# old_client_settings
3264
old_client_settings = {
3265
(key.decode("utf-8")
3266
if isinstance(key, bytes)
3269
bytes_old_client_settings.items()}
3270
del bytes_old_client_settings
3271
# .host and .checker_command
3272
for value in old_client_settings.values():
3273
for attribute in ("host", "checker_command"):
3274
if isinstance(value[attribute], bytes):
3275
value[attribute] = (value[attribute]
3277
os.remove(stored_state_path)
3278
except IOError as e:
3279
if e.errno == errno.ENOENT:
3280
logger.warning("Could not load persistent state:"
3281
" {}".format(os.strerror(e.errno)))
3283
logger.critical("Could not load persistent state:",
3286
except EOFError as e:
3287
logger.warning("Could not load persistent state: "
3291
with PGPEngine() as pgp:
3292
for client_name, client in clients_data.items():
3293
# Skip removed clients
3294
if client_name not in client_settings:
3297
# Decide which value to use after restoring saved state.
3298
# We have three different values: Old config file,
3299
# new config file, and saved state.
3300
# New config value takes precedence if it differs from old
3301
# config value, otherwise use saved state.
3302
for name, value in client_settings[client_name].items():
3304
# For each value in new config, check if it
3305
# differs from the old config value (Except for
3306
# the "secret" attribute)
3307
if (name != "secret"
3309
old_client_settings[client_name][name])):
3310
client[name] = value
3314
# Clients who has passed its expire date can still be
3315
# enabled if its last checker was successful. A Client
3316
# whose checker succeeded before we stored its state is
3317
# assumed to have successfully run all checkers during
3319
if client["enabled"]:
3320
if datetime.datetime.utcnow() >= client["expires"]:
3321
if not client["last_checked_ok"]:
3323
"disabling client {} - Client never "
3324
"performed a successful checker".format(
3326
client["enabled"] = False
3327
elif client["last_checker_status"] != 0:
3329
"disabling client {} - Client last"
3330
" checker failed with error code"
3333
client["last_checker_status"]))
3334
client["enabled"] = False
3336
client["expires"] = (
3337
datetime.datetime.utcnow()
3338
+ client["timeout"])
3339
logger.debug("Last checker succeeded,"
3340
" keeping {} enabled".format(
3343
client["secret"] = pgp.decrypt(
3344
client["encrypted_secret"],
3345
client_settings[client_name]["secret"])
3347
# If decryption fails, we use secret from new settings
3348
logger.debug("Failed to decrypt {} old secret".format(
3350
client["secret"] = (client_settings[client_name]
3353
# Add/remove clients based on new changes made to config
3354
for client_name in (set(old_client_settings)
3355
- set(client_settings)):
3356
del clients_data[client_name]
3357
for client_name in (set(client_settings)
3358
- set(old_client_settings)):
3359
clients_data[client_name] = client_settings[client_name]
3361
# Create all client objects
3362
for client_name, client in clients_data.items():
3363
tcp_server.clients[client_name] = client_class(
3366
server_settings=server_settings)
3368
if not tcp_server.clients:
3369
logger.warning("No clients defined")
3372
if pidfile is not None:
3376
print(pid, file=pidfile)
3378
logger.error("Could not write to file %r with PID %d",
958
logger.error(u"Could not write to file %r with PID %d",
961
# "pidfile" was never created
3383
for termsig in (signal.SIGHUP, signal.SIGTERM):
3384
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3385
lambda: main_loop.quit() and False)
3389
@alternate_dbus_interfaces(
3390
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3391
class MandosDBusService(DBusObjectWithObjectManager):
3392
"""A D-Bus proxy object"""
3395
dbus.service.Object.__init__(self, bus, "/")
3397
_interface = "se.recompile.Mandos"
3399
@dbus.service.signal(_interface, signature="o")
3400
def ClientAdded(self, objpath):
3404
@dbus.service.signal(_interface, signature="ss")
3405
def ClientNotFound(self, key_id, address):
3409
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3411
@dbus.service.signal(_interface, signature="os")
3412
def ClientRemoved(self, objpath, name):
3416
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3418
@dbus.service.method(_interface, out_signature="ao")
3419
def GetAllClients(self):
3421
return dbus.Array(c.dbus_object_path for c in
3422
tcp_server.clients.values())
3424
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3426
@dbus.service.method(_interface,
3427
out_signature="a{oa{sv}}")
3428
def GetAllClientsWithProperties(self):
3430
return dbus.Dictionary(
3431
{c.dbus_object_path: c.GetAll(
3432
"se.recompile.Mandos.Client")
3433
for c in tcp_server.clients.values()},
3436
@dbus.service.method(_interface, in_signature="o")
3437
def RemoveClient(self, object_path):
3439
for c in tcp_server.clients.values():
3440
if c.dbus_object_path == object_path:
3441
del tcp_server.clients[c.name]
3442
c.remove_from_connection()
3443
# Don't signal the disabling
3444
c.disable(quiet=True)
3445
# Emit D-Bus signal for removal
3446
self.client_removed_signal(c)
3448
raise KeyError(object_path)
3452
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3453
out_signature="a{oa{sa{sv}}}")
3454
def GetManagedObjects(self):
3456
return dbus.Dictionary(
3457
{client.dbus_object_path:
3459
{interface: client.GetAll(interface)
3461
client._get_all_interface_names()})
3462
for client in tcp_server.clients.values()})
3464
def client_added_signal(self, client):
3465
"""Send the new standard signal and the old signal"""
3467
# New standard signal
3468
self.InterfacesAdded(
3469
client.dbus_object_path,
3471
{interface: client.GetAll(interface)
3473
client._get_all_interface_names()}))
3475
self.ClientAdded(client.dbus_object_path)
3477
def client_removed_signal(self, client):
3478
"""Send the new standard signal and the old signal"""
3480
# New standard signal
3481
self.InterfacesRemoved(
3482
client.dbus_object_path,
3483
client._get_all_interface_names())
3485
self.ClientRemoved(client.dbus_object_path,
3488
mandos_dbus_service = MandosDBusService()
3490
# Save modules to variables to exempt the modules from being
3491
# unloaded before the function registered with atexit() is run.
3492
mp = multiprocessing
966
3496
"Cleanup function; run on exit"
968
# From the Avahi example code
969
if not group is None:
972
# End of Avahi example code
975
client = clients.pop()
976
client.stop_hook = None
3500
mp.active_children()
3502
if not (tcp_server.clients or client_settings):
3505
# Store client before exiting. Secrets are encrypted with key
3506
# based on what config file has. If config file is
3507
# removed/edited, old secret will thus be unrecovable.
3509
with PGPEngine() as pgp:
3510
for client in tcp_server.clients.values():
3511
key = client_settings[client.name]["secret"]
3512
client.encrypted_secret = pgp.encrypt(client.secret,
3516
# A list of attributes that can not be pickled
3518
exclude = {"bus", "changedstate", "secret",
3519
"checker", "server_settings"}
3520
for name, typ in inspect.getmembers(dbus.service
3524
client_dict["encrypted_secret"] = (client
3526
for attr in client.client_structure:
3527
if attr not in exclude:
3528
client_dict[attr] = getattr(client, attr)
3530
clients[client.name] = client_dict
3531
del client_settings[client.name]["secret"]
3534
with tempfile.NamedTemporaryFile(
3538
dir=os.path.dirname(stored_state_path),
3539
delete=False) as stored_state:
3540
pickle.dump((clients, client_settings), stored_state,
3542
tempname = stored_state.name
3543
os.rename(tempname, stored_state_path)
3544
except (IOError, OSError) as e:
3550
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3551
logger.warning("Could not save persistent state: {}"
3552
.format(os.strerror(e.errno)))
3554
logger.warning("Could not save persistent state:",
3558
# Delete all clients, and settings from config
3559
while tcp_server.clients:
3560
name, client = tcp_server.clients.popitem()
3562
client.remove_from_connection()
3563
# Don't signal the disabling
3564
client.disable(quiet=True)
3565
# Emit D-Bus signal for removal
3567
mandos_dbus_service.client_removed_signal(client)
3568
client_settings.clear()
979
3570
atexit.register(cleanup)
982
signal.signal(signal.SIGINT, signal.SIG_IGN)
983
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
984
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
986
for client in clients:
3572
for client in tcp_server.clients.values():
3574
# Emit D-Bus signal for adding
3575
mandos_dbus_service.client_added_signal(client)
3576
# Need to initiate checking of clients
3578
client.init_checker()
989
3580
tcp_server.enable()
990
3581
tcp_server.server_activate()
992
3583
# Find out what port we got
993
service.port = tcp_server.socket.getsockname()[1]
994
logger.info(u"Now listening on address %r, port %d, flowinfo %d,"
995
u" scope_id %d" % tcp_server.socket.getsockname())
997
#service.interface = tcp_server.socket.getsockname()[3]
3585
service.port = tcp_server.socket.getsockname()[1]
3587
logger.info("Now listening on address %r, port %d,"
3588
" flowinfo %d, scope_id %d",
3589
*tcp_server.socket.getsockname())
3591
logger.info("Now listening on address %r, port %d",
3592
*tcp_server.socket.getsockname())
3594
# service.interface = tcp_server.socket.getsockname()[3]
1000
# From the Avahi example code
1001
server.connect_to_signal("StateChanged", server_state_changed)
1003
server_state_changed(server.GetState())
1004
except dbus.exceptions.DBusException, error:
1005
logger.critical(u"DBusException: %s", error)
1007
# End of Avahi example code
1009
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
1010
lambda *args, **kwargs:
1011
tcp_server.handle_request\
1012
(*args[2:], **kwargs) or True)
1014
logger.debug(u"Starting main loop")
3598
# From the Avahi example code
3601
except dbus.exceptions.DBusException as error:
3602
logger.critical("D-Bus Exception", exc_info=error)
3605
# End of Avahi example code
3608
GLib.IOChannel.unix_new(tcp_server.fileno()),
3609
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
3610
lambda *args, **kwargs: (tcp_server.handle_request
3611
(*args[2:], **kwargs) or True))
3613
logger.debug("Starting main loop")
1015
3614
main_loop.run()
1016
except AvahiError, error:
1017
logger.critical(u"AvahiError: %s" + unicode(error))
3615
except AvahiError as error:
3616
logger.critical("Avahi Error", exc_info=error)
1019
3619
except KeyboardInterrupt:
3621
print("", file=sys.stderr)
3622
logger.debug("Server received KeyboardInterrupt")
3623
logger.debug("Server exiting")
3624
# Must run before the D-Bus bus name gets deregistered
3628
def should_only_run_tests():
3629
parser = argparse.ArgumentParser(add_help=False)
3630
parser.add_argument("--check", action='store_true')
3631
args, unknown_args = parser.parse_known_args()
3632
run_tests = args.check
3634
# Remove --check argument from sys.argv
3635
sys.argv[1:] = unknown_args
3638
# Add all tests from doctest strings
3639
def load_tests(loader, tests, none):
3641
tests.addTests(doctest.DocTestSuite())
1023
3644
if __name__ == '__main__':
3646
if should_only_run_tests():
3647
# Call using ./mandos --check [--verbose]