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(b''.join(chr(byte)
1420
@dbus.service.method(dbus.PROPERTIES_IFACE,
1422
out_signature="a{sv}")
1423
def GetAll(self, interface_name):
1424
"""Standard D-Bus property GetAll() method, see D-Bus
1427
Note: Will not include properties with access="write".
1430
for name, prop in self._get_all_dbus_things("property"):
1432
and interface_name != prop._dbus_interface):
1433
# Interface non-empty but did not match
1435
# Ignore write-only properties
1436
if prop._dbus_access == "write":
1439
if not hasattr(value, "variant_level"):
1440
properties[name] = value
1442
properties[name] = type(value)(
1443
value, variant_level=value.variant_level + 1)
1444
return dbus.Dictionary(properties, signature="sv")
1446
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1447
def PropertiesChanged(self, interface_name, changed_properties,
1448
invalidated_properties):
1449
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1454
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1456
path_keyword='object_path',
1457
connection_keyword='connection')
1458
def Introspect(self, object_path, connection):
1459
"""Overloading of standard D-Bus method.
1461
Inserts property tags and interface annotation tags.
1463
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1467
document = xml.dom.minidom.parseString(xmlstring)
1469
def make_tag(document, name, prop):
1470
e = document.createElement("property")
1471
e.setAttribute("name", name)
1472
e.setAttribute("type", prop._dbus_signature)
1473
e.setAttribute("access", prop._dbus_access)
1476
for if_tag in document.getElementsByTagName("interface"):
1478
for tag in (make_tag(document, name, prop)
1480
in self._get_all_dbus_things("property")
1481
if prop._dbus_interface
1482
== if_tag.getAttribute("name")):
1483
if_tag.appendChild(tag)
1484
# Add annotation tags for properties
1485
for tag in if_tag.getElementsByTagName("property"):
1487
for name, prop in self._get_all_dbus_things(
1489
if (name == tag.getAttribute("name")
1490
and prop._dbus_interface
1491
== if_tag.getAttribute("name")):
1492
annots.update(getattr(
1493
prop, "_dbus_annotations", {}))
1494
for name, value in annots.items():
1495
ann_tag = document.createElement(
1497
ann_tag.setAttribute("name", name)
1498
ann_tag.setAttribute("value", value)
1499
tag.appendChild(ann_tag)
1500
# Add the names to the return values for the
1501
# "org.freedesktop.DBus.Properties" methods
1502
if (if_tag.getAttribute("name")
1503
== "org.freedesktop.DBus.Properties"):
1504
for cn in if_tag.getElementsByTagName("method"):
1505
if cn.getAttribute("name") == "Get":
1506
for arg in cn.getElementsByTagName("arg"):
1507
if (arg.getAttribute("direction")
1509
arg.setAttribute("name", "value")
1510
elif cn.getAttribute("name") == "GetAll":
1511
for arg in cn.getElementsByTagName("arg"):
1512
if (arg.getAttribute("direction")
1514
arg.setAttribute("name", "props")
1515
xmlstring = document.toxml("utf-8")
1517
except (AttributeError, xml.dom.DOMException,
1518
xml.parsers.expat.ExpatError) as error:
1519
logger.error("Failed to override Introspection method",
1525
dbus.OBJECT_MANAGER_IFACE
1526
except AttributeError:
1527
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1530
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1531
"""A D-Bus object with an ObjectManager.
1533
Classes inheriting from this exposes the standard
1534
GetManagedObjects call and the InterfacesAdded and
1535
InterfacesRemoved signals on the standard
1536
"org.freedesktop.DBus.ObjectManager" interface.
1538
Note: No signals are sent automatically; they must be sent
1541
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1542
out_signature="a{oa{sa{sv}}}")
1543
def GetManagedObjects(self):
1544
"""This function must be overridden"""
1545
raise NotImplementedError()
1547
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1548
signature="oa{sa{sv}}")
1549
def InterfacesAdded(self, object_path, interfaces_and_properties):
1552
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1553
def InterfacesRemoved(self, object_path, interfaces):
1556
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1558
path_keyword='object_path',
1559
connection_keyword='connection')
1560
def Introspect(self, object_path, connection):
1561
"""Overloading of standard D-Bus method.
1563
Override return argument name of GetManagedObjects to be
1564
"objpath_interfaces_and_properties"
1566
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1570
document = xml.dom.minidom.parseString(xmlstring)
1572
for if_tag in document.getElementsByTagName("interface"):
1573
# Fix argument name for the GetManagedObjects method
1574
if (if_tag.getAttribute("name")
1575
== dbus.OBJECT_MANAGER_IFACE):
1576
for cn in if_tag.getElementsByTagName("method"):
1577
if (cn.getAttribute("name")
1578
== "GetManagedObjects"):
1579
for arg in cn.getElementsByTagName("arg"):
1580
if (arg.getAttribute("direction")
1584
"objpath_interfaces"
1586
xmlstring = document.toxml("utf-8")
1588
except (AttributeError, xml.dom.DOMException,
1589
xml.parsers.expat.ExpatError) as error:
1590
logger.error("Failed to override Introspection method",
1595
def datetime_to_dbus(dt, variant_level=0):
1596
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1598
return dbus.String("", variant_level=variant_level)
1599
return dbus.String(dt.isoformat(), variant_level=variant_level)
1602
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1603
"""A class decorator; applied to a subclass of
1604
dbus.service.Object, it will add alternate D-Bus attributes with
1605
interface names according to the "alt_interface_names" mapping.
1608
@alternate_dbus_interfaces({"org.example.Interface":
1609
"net.example.AlternateInterface"})
1610
class SampleDBusObject(dbus.service.Object):
1611
@dbus.service.method("org.example.Interface")
1612
def SampleDBusMethod():
1615
The above "SampleDBusMethod" on "SampleDBusObject" will be
1616
reachable via two interfaces: "org.example.Interface" and
1617
"net.example.AlternateInterface", the latter of which will have
1618
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1619
"true", unless "deprecate" is passed with a False value.
1621
This works for methods and signals, and also for D-Bus properties
1622
(from DBusObjectWithProperties) and interfaces (from the
1623
dbus_interface_annotations decorator).
1627
for orig_interface_name, alt_interface_name in (
1628
alt_interface_names.items()):
1630
interface_names = set()
1631
# Go though all attributes of the class
1632
for attrname, attribute in inspect.getmembers(cls):
1633
# Ignore non-D-Bus attributes, and D-Bus attributes
1634
# with the wrong interface name
1635
if (not hasattr(attribute, "_dbus_interface")
1636
or not attribute._dbus_interface.startswith(
1637
orig_interface_name)):
1639
# Create an alternate D-Bus interface name based on
1641
alt_interface = attribute._dbus_interface.replace(
1642
orig_interface_name, alt_interface_name)
1643
interface_names.add(alt_interface)
1644
# Is this a D-Bus signal?
1645
if getattr(attribute, "_dbus_is_signal", False):
1646
# Extract the original non-method undecorated
1647
# function by black magic
1648
if sys.version_info.major == 2:
1649
nonmethod_func = (dict(
1650
zip(attribute.func_code.co_freevars,
1651
attribute.__closure__))
1652
["func"].cell_contents)
1654
nonmethod_func = (dict(
1655
zip(attribute.__code__.co_freevars,
1656
attribute.__closure__))
1657
["func"].cell_contents)
1658
# Create a new, but exactly alike, function
1659
# object, and decorate it to be a new D-Bus signal
1660
# with the alternate D-Bus interface name
1661
new_function = copy_function(nonmethod_func)
1662
new_function = (dbus.service.signal(
1664
attribute._dbus_signature)(new_function))
1665
# Copy annotations, if any
1667
new_function._dbus_annotations = dict(
1668
attribute._dbus_annotations)
1669
except AttributeError:
1672
# Define a creator of a function to call both the
1673
# original and alternate functions, so both the
1674
# original and alternate signals gets sent when
1675
# the function is called
1676
def fixscope(func1, func2):
1677
"""This function is a scope container to pass
1678
func1 and func2 to the "call_both" function
1679
outside of its arguments"""
1681
@functools.wraps(func2)
1682
def call_both(*args, **kwargs):
1683
"""This function will emit two D-Bus
1684
signals by calling func1 and func2"""
1685
func1(*args, **kwargs)
1686
func2(*args, **kwargs)
1687
# Make wrapper function look like a D-Bus
1689
for name, attr in inspect.getmembers(func2):
1690
if name.startswith("_dbus_"):
1691
setattr(call_both, name, attr)
1694
# Create the "call_both" function and add it to
1696
attr[attrname] = fixscope(attribute, new_function)
1697
# Is this a D-Bus method?
1698
elif getattr(attribute, "_dbus_is_method", False):
1699
# Create a new, but exactly alike, function
1700
# object. Decorate it to be a new D-Bus method
1701
# with the alternate D-Bus interface name. Add it
1704
dbus.service.method(
1706
attribute._dbus_in_signature,
1707
attribute._dbus_out_signature)
1708
(copy_function(attribute)))
1709
# Copy annotations, if any
1711
attr[attrname]._dbus_annotations = dict(
1712
attribute._dbus_annotations)
1713
except AttributeError:
1715
# Is this a D-Bus property?
1716
elif getattr(attribute, "_dbus_is_property", False):
1717
# Create a new, but exactly alike, function
1718
# object, and decorate it to be a new D-Bus
1719
# property with the alternate D-Bus interface
1720
# name. Add it to the class.
1721
attr[attrname] = (dbus_service_property(
1722
alt_interface, attribute._dbus_signature,
1723
attribute._dbus_access,
1724
attribute._dbus_get_args_options
1726
(copy_function(attribute)))
1727
# Copy annotations, if any
1729
attr[attrname]._dbus_annotations = dict(
1730
attribute._dbus_annotations)
1731
except AttributeError:
1733
# Is this a D-Bus interface?
1734
elif getattr(attribute, "_dbus_is_interface", False):
1735
# Create a new, but exactly alike, function
1736
# object. Decorate it to be a new D-Bus interface
1737
# with the alternate D-Bus interface name. Add it
1740
dbus_interface_annotations(alt_interface)
1741
(copy_function(attribute)))
1743
# Deprecate all alternate interfaces
1744
iname = "_AlternateDBusNames_interface_annotation{}"
1745
for interface_name in interface_names:
1747
@dbus_interface_annotations(interface_name)
1749
return {"org.freedesktop.DBus.Deprecated":
1751
# Find an unused name
1752
for aname in (iname.format(i)
1753
for i in itertools.count()):
1754
if aname not in attr:
1758
# Replace the class with a new subclass of it with
1759
# methods, signals, etc. as created above.
1760
if sys.version_info.major == 2:
1761
cls = type(b"{}Alternate".format(cls.__name__),
1764
cls = type("{}Alternate".format(cls.__name__),
1771
@alternate_dbus_interfaces({"se.recompile.Mandos":
1772
"se.bsnet.fukt.Mandos"})
1773
class ClientDBus(Client, DBusObjectWithProperties):
1774
"""A Client class using D-Bus
1777
dbus_object_path: dbus.ObjectPath
1778
bus: dbus.SystemBus()
1781
runtime_expansions = (Client.runtime_expansions
1782
+ ("dbus_object_path", ))
1784
_interface = "se.recompile.Mandos.Client"
1786
# dbus.service.Object doesn't use super(), so we can't either.
1788
def __init__(self, bus=None, *args, **kwargs):
1790
Client.__init__(self, *args, **kwargs)
1791
# Only now, when this client is initialized, can it show up on
1793
client_object_name = str(self.name).translate(
1794
{ord("."): ord("_"),
1795
ord("-"): ord("_")})
1796
self.dbus_object_path = dbus.ObjectPath(
1797
"/clients/" + client_object_name)
1798
DBusObjectWithProperties.__init__(self, self.bus,
1799
self.dbus_object_path)
1801
def notifychangeproperty(transform_func, dbus_name,
1802
type_func=lambda x: x,
1804
invalidate_only=False,
1805
_interface=_interface):
1806
""" Modify a variable so that it's a property which announces
1807
its changes to DBus.
1809
transform_fun: Function that takes a value and a variant_level
1810
and transforms it to a D-Bus type.
1811
dbus_name: D-Bus name of the variable
1812
type_func: Function that transform the value before sending it
1813
to the D-Bus. Default: no transform
1814
variant_level: D-Bus variant level. Default: 1
1816
attrname = "_{}".format(dbus_name)
1818
def setter(self, value):
1819
if hasattr(self, "dbus_object_path"):
1820
if (not hasattr(self, attrname) or
1821
type_func(getattr(self, attrname, None))
1822
!= type_func(value)):
1824
self.PropertiesChanged(
1825
_interface, dbus.Dictionary(),
1826
dbus.Array((dbus_name, )))
1828
dbus_value = transform_func(
1830
variant_level=variant_level)
1831
self.PropertyChanged(dbus.String(dbus_name),
1833
self.PropertiesChanged(
1835
dbus.Dictionary({dbus.String(dbus_name):
1838
setattr(self, attrname, value)
1840
return property(lambda self: getattr(self, attrname), setter)
1842
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1843
approvals_pending = notifychangeproperty(dbus.Boolean,
1846
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1847
last_enabled = notifychangeproperty(datetime_to_dbus,
1849
checker = notifychangeproperty(
1850
dbus.Boolean, "CheckerRunning",
1851
type_func=lambda checker: checker is not None)
1852
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1854
last_checker_status = notifychangeproperty(dbus.Int16,
1855
"LastCheckerStatus")
1856
last_approval_request = notifychangeproperty(
1857
datetime_to_dbus, "LastApprovalRequest")
1858
approved_by_default = notifychangeproperty(dbus.Boolean,
1859
"ApprovedByDefault")
1860
approval_delay = notifychangeproperty(
1861
dbus.UInt64, "ApprovalDelay",
1862
type_func=lambda td: td.total_seconds() * 1000)
1863
approval_duration = notifychangeproperty(
1864
dbus.UInt64, "ApprovalDuration",
1865
type_func=lambda td: td.total_seconds() * 1000)
1866
host = notifychangeproperty(dbus.String, "Host")
1867
timeout = notifychangeproperty(
1868
dbus.UInt64, "Timeout",
1869
type_func=lambda td: td.total_seconds() * 1000)
1870
extended_timeout = notifychangeproperty(
1871
dbus.UInt64, "ExtendedTimeout",
1872
type_func=lambda td: td.total_seconds() * 1000)
1873
interval = notifychangeproperty(
1874
dbus.UInt64, "Interval",
1875
type_func=lambda td: td.total_seconds() * 1000)
1876
checker_command = notifychangeproperty(dbus.String, "Checker")
1877
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1878
invalidate_only=True)
1880
del notifychangeproperty
1882
def __del__(self, *args, **kwargs):
1884
self.remove_from_connection()
1887
if hasattr(DBusObjectWithProperties, "__del__"):
1888
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1889
Client.__del__(self, *args, **kwargs)
1891
def checker_callback(self, source, condition,
1892
connection, command, *args, **kwargs):
1893
ret = Client.checker_callback(self, source, condition,
1894
connection, command, *args,
1896
exitstatus = self.last_checker_status
1899
self.CheckerCompleted(dbus.Int16(exitstatus),
1900
# This is specific to GNU libC
1901
dbus.Int64(exitstatus << 8),
1902
dbus.String(command))
1905
self.CheckerCompleted(dbus.Int16(-1),
1907
# This is specific to GNU libC
1909
| self.last_checker_signal),
1910
dbus.String(command))
1913
def start_checker(self, *args, **kwargs):
1914
old_checker_pid = getattr(self.checker, "pid", None)
1915
r = Client.start_checker(self, *args, **kwargs)
1916
# Only if new checker process was started
1917
if (self.checker is not None
1918
and old_checker_pid != self.checker.pid):
1920
self.CheckerStarted(self.current_checker_command)
1923
def _reset_approved(self):
1924
self.approved = None
1927
def approve(self, value=True):
1928
self.approved = value
1929
GLib.timeout_add(int(self.approval_duration.total_seconds()
1930
* 1000), self._reset_approved)
1931
self.send_changedstate()
1933
# D-Bus methods, signals & properties
1939
# CheckerCompleted - signal
1940
@dbus.service.signal(_interface, signature="nxs")
1941
def CheckerCompleted(self, exitcode, waitstatus, command):
1945
# CheckerStarted - signal
1946
@dbus.service.signal(_interface, signature="s")
1947
def CheckerStarted(self, command):
1951
# PropertyChanged - signal
1952
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1953
@dbus.service.signal(_interface, signature="sv")
1954
def PropertyChanged(self, property, value):
1958
# GotSecret - signal
1959
@dbus.service.signal(_interface)
1960
def GotSecret(self):
1962
Is sent after a successful transfer of secret from the Mandos
1963
server to mandos-client
1968
@dbus.service.signal(_interface, signature="s")
1969
def Rejected(self, reason):
1973
# NeedApproval - signal
1974
@dbus.service.signal(_interface, signature="tb")
1975
def NeedApproval(self, timeout, default):
1977
return self.need_approval()
1982
@dbus.service.method(_interface, in_signature="b")
1983
def Approve(self, value):
1986
# CheckedOK - method
1987
@dbus.service.method(_interface)
1988
def CheckedOK(self):
1992
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1993
@dbus.service.method(_interface)
1998
# StartChecker - method
1999
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2000
@dbus.service.method(_interface)
2001
def StartChecker(self):
2003
self.start_checker()
2006
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2007
@dbus.service.method(_interface)
2012
# StopChecker - method
2013
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2014
@dbus.service.method(_interface)
2015
def StopChecker(self):
2020
# ApprovalPending - property
2021
@dbus_service_property(_interface, signature="b", access="read")
2022
def ApprovalPending_dbus_property(self):
2023
return dbus.Boolean(bool(self.approvals_pending))
2025
# ApprovedByDefault - property
2026
@dbus_service_property(_interface,
2029
def ApprovedByDefault_dbus_property(self, value=None):
2030
if value is None: # get
2031
return dbus.Boolean(self.approved_by_default)
2032
self.approved_by_default = bool(value)
2034
# ApprovalDelay - property
2035
@dbus_service_property(_interface,
2038
def ApprovalDelay_dbus_property(self, value=None):
2039
if value is None: # get
2040
return dbus.UInt64(self.approval_delay.total_seconds()
2042
self.approval_delay = datetime.timedelta(0, 0, 0, value)
2044
# ApprovalDuration - property
2045
@dbus_service_property(_interface,
2048
def ApprovalDuration_dbus_property(self, value=None):
2049
if value is None: # get
2050
return dbus.UInt64(self.approval_duration.total_seconds()
2052
self.approval_duration = datetime.timedelta(0, 0, 0, value)
2056
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2057
@dbus_service_property(_interface, signature="s", access="read")
2058
def Name_dbus_property(self):
2059
return dbus.String(self.name)
2063
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2064
@dbus_service_property(_interface, signature="s", access="read")
2065
def KeyID_dbus_property(self):
2066
return dbus.String(self.key_id)
2068
# Fingerprint - property
2070
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2071
@dbus_service_property(_interface, signature="s", access="read")
2072
def Fingerprint_dbus_property(self):
2073
return dbus.String(self.fingerprint)
2076
@dbus_service_property(_interface,
2079
def Host_dbus_property(self, value=None):
2080
if value is None: # get
2081
return dbus.String(self.host)
2082
self.host = str(value)
2084
# Created - property
2086
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2087
@dbus_service_property(_interface, signature="s", access="read")
2088
def Created_dbus_property(self):
2089
return datetime_to_dbus(self.created)
2091
# LastEnabled - property
2092
@dbus_service_property(_interface, signature="s", access="read")
2093
def LastEnabled_dbus_property(self):
2094
return datetime_to_dbus(self.last_enabled)
2096
# Enabled - property
2097
@dbus_service_property(_interface,
2100
def Enabled_dbus_property(self, value=None):
2101
if value is None: # get
2102
return dbus.Boolean(self.enabled)
2108
# LastCheckedOK - property
2109
@dbus_service_property(_interface,
2112
def LastCheckedOK_dbus_property(self, value=None):
2113
if value is not None:
2116
return datetime_to_dbus(self.last_checked_ok)
2118
# LastCheckerStatus - property
2119
@dbus_service_property(_interface, signature="n", access="read")
2120
def LastCheckerStatus_dbus_property(self):
2121
return dbus.Int16(self.last_checker_status)
2123
# Expires - property
2124
@dbus_service_property(_interface, signature="s", access="read")
2125
def Expires_dbus_property(self):
2126
return datetime_to_dbus(self.expires)
2128
# LastApprovalRequest - property
2129
@dbus_service_property(_interface, signature="s", access="read")
2130
def LastApprovalRequest_dbus_property(self):
2131
return datetime_to_dbus(self.last_approval_request)
2133
# Timeout - property
2134
@dbus_service_property(_interface,
2137
def Timeout_dbus_property(self, value=None):
2138
if value is None: # get
2139
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2140
old_timeout = self.timeout
2141
self.timeout = datetime.timedelta(0, 0, 0, value)
2142
# Reschedule disabling
2144
now = datetime.datetime.utcnow()
2145
self.expires += self.timeout - old_timeout
2146
if self.expires <= now:
2147
# The timeout has passed
2150
if (getattr(self, "disable_initiator_tag", None)
2153
GLib.source_remove(self.disable_initiator_tag)
2154
self.disable_initiator_tag = GLib.timeout_add(
2155
int((self.expires - now).total_seconds() * 1000),
2158
# ExtendedTimeout - property
2159
@dbus_service_property(_interface,
2162
def ExtendedTimeout_dbus_property(self, value=None):
2163
if value is None: # get
2164
return dbus.UInt64(self.extended_timeout.total_seconds()
2166
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2168
# Interval - property
2169
@dbus_service_property(_interface,
2172
def Interval_dbus_property(self, value=None):
2173
if value is None: # get
2174
return dbus.UInt64(self.interval.total_seconds() * 1000)
2175
self.interval = datetime.timedelta(0, 0, 0, value)
2176
if getattr(self, "checker_initiator_tag", None) is None:
2179
# Reschedule checker run
2180
GLib.source_remove(self.checker_initiator_tag)
2181
self.checker_initiator_tag = GLib.timeout_add(
2182
value, self.start_checker)
2183
self.start_checker() # Start one now, too
2185
# Checker - property
2186
@dbus_service_property(_interface,
2189
def Checker_dbus_property(self, value=None):
2190
if value is None: # get
2191
return dbus.String(self.checker_command)
2192
self.checker_command = str(value)
2194
# CheckerRunning - property
2195
@dbus_service_property(_interface,
2198
def CheckerRunning_dbus_property(self, value=None):
2199
if value is None: # get
2200
return dbus.Boolean(self.checker is not None)
2202
self.start_checker()
2206
# ObjectPath - property
2208
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2209
"org.freedesktop.DBus.Deprecated": "true"})
2210
@dbus_service_property(_interface, signature="o", access="read")
2211
def ObjectPath_dbus_property(self):
2212
return self.dbus_object_path # is already a dbus.ObjectPath
2216
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2218
@dbus_service_property(_interface,
2222
def Secret_dbus_property(self, value):
2223
self.secret = bytes(value)
2229
def __init__(self, child_pipe, key_id, fpr, address):
2230
self._pipe = child_pipe
2231
self._pipe.send(('init', key_id, fpr, address))
2232
if not self._pipe.recv():
2233
raise KeyError(key_id or fpr)
2235
def __getattribute__(self, name):
2237
return super(ProxyClient, self).__getattribute__(name)
2238
self._pipe.send(('getattr', name))
2239
data = self._pipe.recv()
2240
if data[0] == 'data':
2242
if data[0] == 'function':
2244
def func(*args, **kwargs):
2245
self._pipe.send(('funcall', name, args, kwargs))
2246
return self._pipe.recv()[1]
2250
def __setattr__(self, name, value):
2252
return super(ProxyClient, self).__setattr__(name, value)
2253
self._pipe.send(('setattr', name, value))
2256
class ClientHandler(socketserver.BaseRequestHandler, object):
2257
"""A class to handle client connections.
2259
Instantiated once for each connection to handle it.
549
2260
Note: This will run in its own forked process."""
551
2262
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.
2263
with contextlib.closing(self.server.child_pipe) as child_pipe:
2264
logger.info("TCP connection from: %s",
2265
str(self.client_address))
2266
logger.debug("Pipe FD: %d",
2267
self.server.child_pipe.fileno())
2269
session = gnutls.ClientSession(self.request)
2271
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2272
# "+AES-256-CBC", "+SHA1",
2273
# "+COMP-NULL", "+CTYPE-OPENPGP",
2275
# Use a fallback default, since this MUST be set.
2276
priority = self.server.gnutls_priority
2277
if priority is None:
2279
gnutls.priority_set_direct(session._c_object,
2280
priority.encode("utf-8"),
2283
# Start communication using the Mandos protocol
2284
# Get protocol number
2285
line = self.request.makefile().readline()
2286
logger.debug("Protocol version: %r", line)
2288
if int(line.strip().split()[0]) > 1:
2289
raise RuntimeError(line)
2290
except (ValueError, IndexError, RuntimeError) as error:
2291
logger.error("Unknown protocol version: %s", error)
2294
# Start GnuTLS connection
2297
except gnutls.Error as error:
2298
logger.warning("Handshake failed: %s", error)
2299
# Do not run session.bye() here: the session is not
2300
# established. Just abandon the request.
2302
logger.debug("Handshake succeeded")
2304
approval_required = False
2306
if gnutls.has_rawpk:
2309
key_id = self.key_id(
2310
self.peer_certificate(session))
2311
except (TypeError, gnutls.Error) as error:
2312
logger.warning("Bad certificate: %s", error)
2314
logger.debug("Key ID: %s", key_id)
2319
fpr = self.fingerprint(
2320
self.peer_certificate(session))
2321
except (TypeError, gnutls.Error) as error:
2322
logger.warning("Bad certificate: %s", error)
2324
logger.debug("Fingerprint: %s", fpr)
2327
client = ProxyClient(child_pipe, key_id, fpr,
2328
self.client_address)
2332
if client.approval_delay:
2333
delay = client.approval_delay
2334
client.approvals_pending += 1
2335
approval_required = True
2338
if not client.enabled:
2339
logger.info("Client %s is disabled",
2341
if self.server.use_dbus:
2343
client.Rejected("Disabled")
2346
if client.approved or not client.approval_delay:
2347
# We are approved or approval is disabled
2349
elif client.approved is None:
2350
logger.info("Client %s needs approval",
2352
if self.server.use_dbus:
2354
client.NeedApproval(
2355
client.approval_delay.total_seconds()
2356
* 1000, client.approved_by_default)
2358
logger.warning("Client %s was not approved",
2360
if self.server.use_dbus:
2362
client.Rejected("Denied")
2365
# wait until timeout or approved
2366
time = datetime.datetime.now()
2367
client.changedstate.acquire()
2368
client.changedstate.wait(delay.total_seconds())
2369
client.changedstate.release()
2370
time2 = datetime.datetime.now()
2371
if (time2 - time) >= delay:
2372
if not client.approved_by_default:
2373
logger.warning("Client %s timed out while"
2374
" waiting for approval",
2376
if self.server.use_dbus:
2378
client.Rejected("Approval timed out")
2383
delay -= time2 - time
2386
session.send(client.secret)
2387
except gnutls.Error as error:
2388
logger.warning("gnutls send failed",
2392
logger.info("Sending secret to %s", client.name)
2393
# bump the timeout using extended_timeout
2394
client.bump_timeout(client.extended_timeout)
2395
if self.server.use_dbus:
2400
if approval_required:
2401
client.approvals_pending -= 1
2404
except gnutls.Error as error:
2405
logger.warning("GnuTLS bye failed",
2409
def peer_certificate(session):
2410
"Return the peer's certificate as a bytestring"
2412
cert_type = gnutls.certificate_type_get2(session._c_object,
2414
except AttributeError:
2415
cert_type = gnutls.certificate_type_get(session._c_object)
2416
if gnutls.has_rawpk:
2417
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2419
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2420
# If not a valid certificate type...
2421
if cert_type not in valid_cert_types:
2422
logger.info("Cert type %r not in %r", cert_type,
2424
# ...return invalid data
2426
list_size = ctypes.c_uint(1)
2427
cert_list = (gnutls.certificate_get_peers
2428
(session._c_object, ctypes.byref(list_size)))
2429
if not bool(cert_list) and list_size.value != 0:
2430
raise gnutls.Error("error getting peer certificate")
2431
if list_size.value == 0:
2434
return ctypes.string_at(cert.data, cert.size)
2437
def key_id(certificate):
2438
"Convert a certificate bytestring to a hexdigit key ID"
2439
# New GnuTLS "datum" with the public key
2440
datum = gnutls.datum_t(
2441
ctypes.cast(ctypes.c_char_p(certificate),
2442
ctypes.POINTER(ctypes.c_ubyte)),
2443
ctypes.c_uint(len(certificate)))
2444
# XXX all these need to be created in the gnutls "module"
2445
# New empty GnuTLS certificate
2446
pubkey = gnutls.pubkey_t()
2447
gnutls.pubkey_init(ctypes.byref(pubkey))
2448
# Import the raw public key into the certificate
2449
gnutls.pubkey_import(pubkey,
2450
ctypes.byref(datum),
2451
gnutls.X509_FMT_DER)
2452
# New buffer for the key ID
2453
buf = ctypes.create_string_buffer(32)
2454
buf_len = ctypes.c_size_t(len(buf))
2455
# Get the key ID from the raw public key into the buffer
2456
gnutls.pubkey_get_key_id(pubkey,
2457
gnutls.KEYID_USE_SHA256,
2458
ctypes.cast(ctypes.byref(buf),
2459
ctypes.POINTER(ctypes.c_ubyte)),
2460
ctypes.byref(buf_len))
2461
# Deinit the certificate
2462
gnutls.pubkey_deinit(pubkey)
2464
# Convert the buffer to a Python bytestring
2465
key_id = ctypes.string_at(buf, buf_len.value)
2466
# Convert the bytestring to hexadecimal notation
2467
hex_key_id = binascii.hexlify(key_id).upper()
2471
def fingerprint(openpgp):
2472
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2473
# New GnuTLS "datum" with the OpenPGP public key
2474
datum = gnutls.datum_t(
2475
ctypes.cast(ctypes.c_char_p(openpgp),
2476
ctypes.POINTER(ctypes.c_ubyte)),
2477
ctypes.c_uint(len(openpgp)))
2478
# New empty GnuTLS certificate
2479
crt = gnutls.openpgp_crt_t()
2480
gnutls.openpgp_crt_init(ctypes.byref(crt))
2481
# Import the OpenPGP public key into the certificate
2482
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2483
gnutls.OPENPGP_FMT_RAW)
2484
# Verify the self signature in the key
2485
crtverify = ctypes.c_uint()
2486
gnutls.openpgp_crt_verify_self(crt, 0,
2487
ctypes.byref(crtverify))
2488
if crtverify.value != 0:
2489
gnutls.openpgp_crt_deinit(crt)
2490
raise gnutls.CertificateSecurityError(code
2492
# New buffer for the fingerprint
2493
buf = ctypes.create_string_buffer(20)
2494
buf_len = ctypes.c_size_t()
2495
# Get the fingerprint from the certificate into the buffer
2496
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2497
ctypes.byref(buf_len))
2498
# Deinit the certificate
2499
gnutls.openpgp_crt_deinit(crt)
2500
# Convert the buffer to a Python bytestring
2501
fpr = ctypes.string_at(buf, buf_len.value)
2502
# Convert the bytestring to hexadecimal notation
2503
hex_fpr = binascii.hexlify(fpr).upper()
2507
class MultiprocessingMixIn:
2508
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2510
def sub_process_main(self, request, address):
2512
self.finish_request(request, address)
2514
self.handle_error(request, address)
2515
self.close_request(request)
2517
def process_request(self, request, address):
2518
"""Start a new process to process the request."""
2519
proc = multiprocessing.Process(target=self.sub_process_main,
2520
args=(request, address))
2525
class MultiprocessingMixInWithPipe(MultiprocessingMixIn):
2526
""" adds a pipe to the MixIn """
2528
def process_request(self, request, client_address):
2529
"""Overrides and wraps the original process_request().
2531
This function creates a new pipe in self.pipe
2533
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2535
proc = MultiprocessingMixIn.process_request(self, request,
2537
self.child_pipe.close()
2538
self.add_pipe(parent_pipe, proc)
2540
def add_pipe(self, parent_pipe, proc):
2541
"""Dummy function; override as necessary"""
2542
raise NotImplementedError()
2545
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2546
socketserver.TCPServer):
2547
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
627
settings: Server settings
628
clients: Set() of Client objects
629
2550
enabled: Boolean; whether this server is activated yet
2551
interface: None or a network interface name (string)
2552
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)
2555
def __init__(self, server_address, RequestHandlerClass,
2559
"""If socketfd is set, use that file descriptor instead of
2560
creating a new one with socket.socket().
2562
self.interface = interface
2564
self.address_family = socket.AF_INET6
2565
if socketfd is not None:
2566
# Save the file descriptor
2567
self.socketfd = socketfd
2568
# Save the original socket.socket() function
2569
self.socket_socket = socket.socket
2571
# To implement --socket, we monkey patch socket.socket.
2573
# (When socketserver.TCPServer is a new-style class, we
2574
# could make self.socket into a property instead of monkey
2575
# patching socket.socket.)
2577
# Create a one-time-only replacement for socket.socket()
2578
@functools.wraps(socket.socket)
2579
def socket_wrapper(*args, **kwargs):
2580
# Restore original function so subsequent calls are
2582
socket.socket = self.socket_socket
2583
del self.socket_socket
2584
# This time only, return a new socket object from the
2585
# saved file descriptor.
2586
return socket.fromfd(self.socketfd, *args, **kwargs)
2587
# Replace socket.socket() function with wrapper
2588
socket.socket = socket_wrapper
2589
# The socketserver.TCPServer.__init__ will call
2590
# socket.socket(), which might be our replacement,
2591
# socket_wrapper(), if socketfd was set.
2592
socketserver.TCPServer.__init__(self, server_address,
2593
RequestHandlerClass)
641
2595
def server_bind(self):
642
2596
"""This overrides the normal server_bind() function
643
2597
to bind to an interface if one was specified, and also NOT to
644
2598
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)
2599
global SO_BINDTODEVICE
2600
if self.interface is not None:
2601
if SO_BINDTODEVICE is None:
2602
# Fall back to a hard-coded value which seems to be
2604
logger.warning("SO_BINDTODEVICE not found, trying 25")
2605
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"])
2607
self.socket.setsockopt(
2608
socket.SOL_SOCKET, SO_BINDTODEVICE,
2609
(self.interface + "\0").encode("utf-8"))
2610
except socket.error as error:
2611
if error.errno == errno.EPERM:
2612
logger.error("No permission to bind to"
2613
" interface %s", self.interface)
2614
elif error.errno == errno.ENOPROTOOPT:
2615
logger.error("SO_BINDTODEVICE not available;"
2616
" cannot bind to interface %s",
2618
elif error.errno == errno.ENODEV:
2619
logger.error("Interface %s does not exist,"
2620
" cannot bind", self.interface)
659
2623
# Only bind(2) the socket if we really need to.
660
2624
if self.server_address[0] or self.server_address[1]:
2625
if self.server_address[1]:
2626
self.allow_reuse_address = True
661
2627
if not self.server_address[0]:
663
self.server_address = (in6addr_any,
2628
if self.address_family == socket.AF_INET6:
2629
any_address = "::" # in6addr_any
2631
any_address = "0.0.0.0" # INADDR_ANY
2632
self.server_address = (any_address,
664
2633
self.server_address[1])
665
2634
elif not self.server_address[1]:
666
self.server_address = (self.server_address[0],
668
# if self.settings["interface"]:
2635
self.server_address = (self.server_address[0], 0)
2636
# if self.interface:
669
2637
# self.server_address = (self.server_address[0],
672
2640
# if_nametoindex
675
return super(IPv6_TCPServer, self).server_bind()
2642
return socketserver.TCPServer.server_bind(self)
2645
class MandosServer(IPv6_TCPServer):
2649
clients: set of Client objects
2650
gnutls_priority GnuTLS priority string
2651
use_dbus: Boolean; to emit D-Bus signals or not
2653
Assumes a GLib.MainLoop event loop.
2656
def __init__(self, server_address, RequestHandlerClass,
2660
gnutls_priority=None,
2663
self.enabled = False
2664
self.clients = clients
2665
if self.clients is None:
2667
self.use_dbus = use_dbus
2668
self.gnutls_priority = gnutls_priority
2669
IPv6_TCPServer.__init__(self, server_address,
2670
RequestHandlerClass,
2671
interface=interface,
676
2675
def server_activate(self):
677
2676
if self.enabled:
678
return super(IPv6_TCPServer, self).server_activate()
2677
return socketserver.TCPServer.server_activate(self)
679
2679
def enable(self):
680
2680
self.enabled = True
2682
def add_pipe(self, parent_pipe, proc):
2683
# Call "handle_ipc" for both data and EOF events
2685
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2686
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2687
functools.partial(self.handle_ipc,
2688
parent_pipe=parent_pipe,
2691
def handle_ipc(self, source, condition,
2694
client_object=None):
2695
# error, or the other end of multiprocessing.Pipe has closed
2696
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2697
# Wait for other process to exit
2701
# Read a request from the child
2702
request = parent_pipe.recv()
2703
command = request[0]
2705
if command == 'init':
2706
key_id = request[1].decode("ascii")
2707
fpr = request[2].decode("ascii")
2708
address = request[3]
2710
for c in self.clients.values():
2711
if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2713
if key_id and c.key_id == key_id:
2716
if fpr and c.fingerprint == fpr:
2720
logger.info("Client not found for key ID: %s, address"
2721
": %s", key_id or fpr, address)
2724
mandos_dbus_service.ClientNotFound(key_id or fpr,
2726
parent_pipe.send(False)
2730
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2731
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2732
functools.partial(self.handle_ipc,
2733
parent_pipe=parent_pipe,
2735
client_object=client))
2736
parent_pipe.send(True)
2737
# remove the old hook in favor of the new above hook on
2740
if command == 'funcall':
2741
funcname = request[1]
2745
parent_pipe.send(('data', getattr(client_object,
2749
if command == 'getattr':
2750
attrname = request[1]
2751
if isinstance(client_object.__getattribute__(attrname),
2752
collections.Callable):
2753
parent_pipe.send(('function', ))
2756
'data', client_object.__getattribute__(attrname)))
2758
if command == 'setattr':
2759
attrname = request[1]
2761
setattr(client_object, attrname, value)
2766
def rfc3339_duration_to_delta(duration):
2767
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2769
>>> rfc3339_duration_to_delta("P7D") == datetime.timedelta(7)
2771
>>> rfc3339_duration_to_delta("PT60S") == datetime.timedelta(0, 60)
2773
>>> rfc3339_duration_to_delta("PT60M") == datetime.timedelta(0, 3600)
2775
>>> rfc3339_duration_to_delta("PT24H") == datetime.timedelta(1)
2777
>>> rfc3339_duration_to_delta("P1W") == datetime.timedelta(7)
2779
>>> rfc3339_duration_to_delta("PT5M30S") == datetime.timedelta(0, 330)
2781
>>> rfc3339_duration_to_delta("P1DT3M20S") == datetime.timedelta(1, 200)
2785
# Parsing an RFC 3339 duration with regular expressions is not
2786
# possible - there would have to be multiple places for the same
2787
# values, like seconds. The current code, while more esoteric, is
2788
# cleaner without depending on a parsing library. If Python had a
2789
# built-in library for parsing we would use it, but we'd like to
2790
# avoid excessive use of external libraries.
2792
# New type for defining tokens, syntax, and semantics all-in-one
2793
Token = collections.namedtuple("Token", (
2794
"regexp", # To match token; if "value" is not None, must have
2795
# a "group" containing digits
2796
"value", # datetime.timedelta or None
2797
"followers")) # Tokens valid after this token
2798
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2799
# the "duration" ABNF definition in RFC 3339, Appendix A.
2800
token_end = Token(re.compile(r"$"), None, frozenset())
2801
token_second = Token(re.compile(r"(\d+)S"),
2802
datetime.timedelta(seconds=1),
2803
frozenset((token_end, )))
2804
token_minute = Token(re.compile(r"(\d+)M"),
2805
datetime.timedelta(minutes=1),
2806
frozenset((token_second, token_end)))
2807
token_hour = Token(re.compile(r"(\d+)H"),
2808
datetime.timedelta(hours=1),
2809
frozenset((token_minute, token_end)))
2810
token_time = Token(re.compile(r"T"),
2812
frozenset((token_hour, token_minute,
2814
token_day = Token(re.compile(r"(\d+)D"),
2815
datetime.timedelta(days=1),
2816
frozenset((token_time, token_end)))
2817
token_month = Token(re.compile(r"(\d+)M"),
2818
datetime.timedelta(weeks=4),
2819
frozenset((token_day, token_end)))
2820
token_year = Token(re.compile(r"(\d+)Y"),
2821
datetime.timedelta(weeks=52),
2822
frozenset((token_month, token_end)))
2823
token_week = Token(re.compile(r"(\d+)W"),
2824
datetime.timedelta(weeks=1),
2825
frozenset((token_end, )))
2826
token_duration = Token(re.compile(r"P"), None,
2827
frozenset((token_year, token_month,
2828
token_day, token_time,
2830
# Define starting values:
2832
value = datetime.timedelta()
2834
# Following valid tokens
2835
followers = frozenset((token_duration, ))
2836
# String left to parse
2838
# Loop until end token is found
2839
while found_token is not token_end:
2840
# Search for any currently valid tokens
2841
for token in followers:
2842
match = token.regexp.match(s)
2843
if match is not None:
2845
if token.value is not None:
2846
# Value found, parse digits
2847
factor = int(match.group(1), 10)
2848
# Add to value so far
2849
value += factor * token.value
2850
# Strip token from string
2851
s = token.regexp.sub("", s, 1)
2854
# Set valid next tokens
2855
followers = found_token.followers
2858
# No currently valid tokens were found
2859
raise ValueError("Invalid RFC 3339 duration: {!r}"
683
2865
def string_to_delta(interval):
684
2866
"""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)
2868
>>> string_to_delta('7d') == datetime.timedelta(7)
2870
>>> string_to_delta('60s') == datetime.timedelta(0, 60)
2872
>>> string_to_delta('60m') == datetime.timedelta(0, 3600)
2874
>>> string_to_delta('24h') == datetime.timedelta(1)
2876
>>> string_to_delta('1w') == datetime.timedelta(7)
2878
>>> string_to_delta('5m 30s') == datetime.timedelta(0, 330)
2883
return rfc3339_duration_to_delta(interval)
699
2887
timevalue = datetime.timedelta(0)
700
2888
for s in interval.split():
702
suffix = unicode(s[-1])
703
2891
value = int(s[:-1])
705
2893
delta = datetime.timedelta(value)
707
2895
delta = datetime.timedelta(0, value)
709
2897
delta = datetime.timedelta(0, 0, 0, 0, value)
711
2899
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
713
2901
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
716
except (ValueError, IndexError):
2903
raise ValueError("Unknown suffix {!r}".format(suffix))
2904
except IndexError as e:
2905
raise ValueError(*(e.args))
718
2906
timevalue += delta
719
2907
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):
2910
def daemon(nochdir=False, noclose=False):
768
2911
"""See daemon(3). Standard BSD Unix function.
769
2913
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]
2937
##################################################################
2938
# Parsing of options, both command line and config file
2940
parser = argparse.ArgumentParser()
2941
parser.add_argument("-v", "--version", action="version",
2942
version="%(prog)s {}".format(version),
2943
help="show version number and exit")
2944
parser.add_argument("-i", "--interface", metavar="IF",
2945
help="Bind to interface IF")
2946
parser.add_argument("-a", "--address",
2947
help="Address to listen for requests on")
2948
parser.add_argument("-p", "--port", type=int,
2949
help="Port number to receive requests on")
2950
parser.add_argument("--check", action="store_true",
2951
help="Run self-test")
2952
parser.add_argument("--debug", action="store_true",
2953
help="Debug mode; run in foreground and log"
2954
" to terminal", default=None)
2955
parser.add_argument("--debuglevel", metavar="LEVEL",
2956
help="Debug level for stdout output")
2957
parser.add_argument("--priority", help="GnuTLS"
2958
" priority string (see GnuTLS documentation)")
2959
parser.add_argument("--servicename",
2960
metavar="NAME", help="Zeroconf service name")
2961
parser.add_argument("--configdir",
2962
default="/etc/mandos", metavar="DIR",
2963
help="Directory to search for configuration"
2965
parser.add_argument("--no-dbus", action="store_false",
2966
dest="use_dbus", help="Do not provide D-Bus"
2967
" system bus interface", default=None)
2968
parser.add_argument("--no-ipv6", action="store_false",
2969
dest="use_ipv6", help="Do not use IPv6",
2971
parser.add_argument("--no-restore", action="store_false",
2972
dest="restore", help="Do not restore stored"
2973
" state", default=None)
2974
parser.add_argument("--socket", type=int,
2975
help="Specify a file descriptor to a network"
2976
" socket to use instead of creating one")
2977
parser.add_argument("--statedir", metavar="DIR",
2978
help="Directory to save/restore state in")
2979
parser.add_argument("--foreground", action="store_true",
2980
help="Run in foreground", default=None)
2981
parser.add_argument("--no-zeroconf", action="store_false",
2982
dest="zeroconf", help="Do not use Zeroconf",
2985
options = parser.parse_args()
818
2987
# Default values for config file for server-global settings
819
server_defaults = { "interface": "",
824
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
825
"servicename": "Mandos",
2988
if gnutls.has_rawpk:
2989
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
2990
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
2992
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2993
":+SIGN-DSA-SHA256")
2994
server_defaults = {"interface": "",
2998
"priority": priority,
2999
"servicename": "Mandos",
3005
"statedir": "/var/lib/mandos",
3006
"foreground": "False",
828
3011
# Parse config file for server-global settings
829
server_config = ConfigParser.SafeConfigParser(server_defaults)
3012
server_config = configparser.ConfigParser(server_defaults)
830
3013
del server_defaults
831
3014
server_config.read(os.path.join(options.configdir, "mandos.conf"))
832
# Convert the SafeConfigParser object to a dict
3015
# Convert the ConfigParser object to a dict
833
3016
server_settings = server_config.defaults()
834
# Use getboolean on the boolean config option
835
server_settings["debug"] = server_config.getboolean\
3017
# Use the appropriate methods on the non-string config options
3018
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3019
"foreground", "zeroconf"):
3020
server_settings[option] = server_config.getboolean("DEFAULT",
3022
if server_settings["port"]:
3023
server_settings["port"] = server_config.getint("DEFAULT",
3025
if server_settings["socket"]:
3026
server_settings["socket"] = server_config.getint("DEFAULT",
3028
# Later, stdin will, and stdout and stderr might, be dup'ed
3029
# over with an opened os.devnull. But we don't want this to
3030
# happen with a supplied network socket.
3031
if 0 <= server_settings["socket"] <= 2:
3032
server_settings["socket"] = os.dup(server_settings
837
3034
del server_config
839
3036
# Override the settings from the config file with command line
840
3037
# options, if set.
841
3038
for option in ("interface", "address", "port", "debug",
842
"priority", "servicename", "configdir"):
3039
"priority", "servicename", "configdir", "use_dbus",
3040
"use_ipv6", "debuglevel", "restore", "statedir",
3041
"socket", "foreground", "zeroconf"):
843
3042
value = getattr(options, option)
844
3043
if value is not None:
845
3044
server_settings[option] = value
3046
# Force all strings to be unicode
3047
for option in server_settings.keys():
3048
if isinstance(server_settings[option], bytes):
3049
server_settings[option] = (server_settings[option]
3051
# Force all boolean options to be boolean
3052
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3053
"foreground", "zeroconf"):
3054
server_settings[option] = bool(server_settings[option])
3055
# Debug implies foreground
3056
if server_settings["debug"]:
3057
server_settings["foreground"] = True
847
3058
# Now we have our good server settings in "server_settings"
3060
##################################################################
3062
if (not server_settings["zeroconf"]
3063
and not (server_settings["port"]
3064
or server_settings["socket"] != "")):
3065
parser.error("Needs port or socket to work without Zeroconf")
849
3068
debug = server_settings["debug"]
852
syslogger.setLevel(logging.WARNING)
853
console.setLevel(logging.WARNING)
3069
debuglevel = server_settings["debuglevel"]
3070
use_dbus = server_settings["use_dbus"]
3071
use_ipv6 = server_settings["use_ipv6"]
3072
stored_state_path = os.path.join(server_settings["statedir"],
3074
foreground = server_settings["foreground"]
3075
zeroconf = server_settings["zeroconf"]
3078
initlogger(debug, logging.DEBUG)
3083
level = getattr(logging, debuglevel.upper())
3084
initlogger(debug, level)
855
3086
if server_settings["servicename"] != "Mandos":
856
syslogger.setFormatter(logging.Formatter\
857
('Mandos (%s): %%(levelname)s:'
859
% server_settings["servicename"]))
3087
syslogger.setFormatter(
3088
logging.Formatter('Mandos ({}) [%(process)d]:'
3089
' %(levelname)s: %(message)s'.format(
3090
server_settings["servicename"])))
861
3092
# Parse config file with clients
862
client_defaults = { "timeout": "1h",
864
"checker": "fping -q -- %(host)s",
867
client_config = ConfigParser.SafeConfigParser(client_defaults)
3093
client_config = configparser.ConfigParser(Client.client_defaults)
868
3094
client_config.read(os.path.join(server_settings["configdir"],
869
3095
"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
3097
global mandos_dbus_service
3098
mandos_dbus_service = None
3101
if server_settings["socket"] != "":
3102
socketfd = server_settings["socket"]
3103
tcp_server = MandosServer(
3104
(server_settings["address"], server_settings["port"]),
3106
interface=(server_settings["interface"] or None),
3108
gnutls_priority=server_settings["priority"],
3112
pidfilename = "/run/mandos.pid"
3113
if not os.path.isdir("/run/."):
3114
pidfilename = "/var/run/mandos.pid"
3117
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3118
except IOError as e:
3119
logger.error("Could not open file %r", pidfilename,
3122
for name, group in (("_mandos", "_mandos"),
3123
("mandos", "mandos"),
3124
("nobody", "nogroup")):
3126
uid = pwd.getpwnam(name).pw_uid
3127
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"])
3138
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3140
except OSError as error:
3141
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3142
.format(uid, gid, os.strerror(error.errno)))
3143
if error.errno != errno.EPERM:
3147
# Enable all possible GnuTLS debugging
3149
# "Use a log level over 10 to enable all debugging options."
3151
gnutls.global_set_log_level(11)
3154
def debug_gnutls(level, string):
3155
logger.debug("GnuTLS: %s", string[:-1])
3157
gnutls.global_set_log_function(debug_gnutls)
3159
# Redirect stdin so all checkers get /dev/null
3160
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
3161
os.dup2(null, sys.stdin.fileno())
3165
# Need to fork before connecting to D-Bus
3167
# Close all input and output, do double fork, etc.
3170
if gi.version_info < (3, 10, 2):
3171
# multiprocessing will use threads, so before we use GLib we
3172
# need to inform GLib that threads will be used.
913
3175
global main_loop
916
3176
# From the Avahi example code
917
DBusGMainLoop(set_as_default=True )
918
main_loop = gobject.MainLoop()
3177
DBusGMainLoop(set_as_default=True)
3178
main_loop = GLib.MainLoop()
919
3179
bus = dbus.SystemBus()
920
server = dbus.Interface(bus.get_object(avahi.DBUS_NAME,
921
avahi.DBUS_PATH_SERVER),
922
avahi.DBUS_INTERFACE_SERVER)
923
3180
# 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")
3183
bus_name = dbus.service.BusName("se.recompile.Mandos",
3186
old_bus_name = dbus.service.BusName(
3187
"se.bsnet.fukt.Mandos", bus,
3189
except dbus.exceptions.DBusException as e:
3190
logger.error("Disabling D-Bus:", exc_info=e)
3192
server_settings["use_dbus"] = False
3193
tcp_server.use_dbus = False
3195
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3196
service = AvahiServiceToSyslog(
3197
name=server_settings["servicename"],
3198
servicetype="_mandos._tcp",
3201
if server_settings["interface"]:
3202
service.interface = if_nametoindex(
3203
server_settings["interface"].encode("utf-8"))
3205
global multiprocessing_manager
3206
multiprocessing_manager = multiprocessing.Manager()
3208
client_class = Client
3210
client_class = functools.partial(ClientDBus, bus=bus)
3212
client_settings = Client.config_parser(client_config)
3213
old_client_settings = {}
3216
# This is used to redirect stdout and stderr for checker processes
3218
wnull = open(os.devnull, "w") # A writable /dev/null
3219
# Only used if server is running in foreground but not in debug
3221
if debug or not foreground:
3224
# Get client data and settings from last running state.
3225
if server_settings["restore"]:
3227
with open(stored_state_path, "rb") as stored_state:
3228
if sys.version_info.major == 2:
3229
clients_data, old_client_settings = pickle.load(
3232
bytes_clients_data, bytes_old_client_settings = (
3233
pickle.load(stored_state, encoding="bytes"))
3234
# Fix bytes to strings
3237
clients_data = {(key.decode("utf-8")
3238
if isinstance(key, bytes)
3241
bytes_clients_data.items()}
3242
del bytes_clients_data
3243
for key in clients_data:
3244
value = {(k.decode("utf-8")
3245
if isinstance(k, bytes) else k): v
3247
clients_data[key].items()}
3248
clients_data[key] = value
3250
value["client_structure"] = [
3252
if isinstance(s, bytes)
3254
value["client_structure"]]
3255
# .name, .host, and .checker_command
3256
for k in ("name", "host", "checker_command"):
3257
if isinstance(value[k], bytes):
3258
value[k] = value[k].decode("utf-8")
3259
if "key_id" not in value:
3260
value["key_id"] = ""
3261
elif "fingerprint" not in value:
3262
value["fingerprint"] = ""
3263
# old_client_settings
3265
old_client_settings = {
3266
(key.decode("utf-8")
3267
if isinstance(key, bytes)
3270
bytes_old_client_settings.items()}
3271
del bytes_old_client_settings
3272
# .host and .checker_command
3273
for value in old_client_settings.values():
3274
for attribute in ("host", "checker_command"):
3275
if isinstance(value[attribute], bytes):
3276
value[attribute] = (value[attribute]
3278
os.remove(stored_state_path)
3279
except IOError as e:
3280
if e.errno == errno.ENOENT:
3281
logger.warning("Could not load persistent state:"
3282
" {}".format(os.strerror(e.errno)))
3284
logger.critical("Could not load persistent state:",
3287
except EOFError as e:
3288
logger.warning("Could not load persistent state: "
3292
with PGPEngine() as pgp:
3293
for client_name, client in clients_data.items():
3294
# Skip removed clients
3295
if client_name not in client_settings:
3298
# Decide which value to use after restoring saved state.
3299
# We have three different values: Old config file,
3300
# new config file, and saved state.
3301
# New config value takes precedence if it differs from old
3302
# config value, otherwise use saved state.
3303
for name, value in client_settings[client_name].items():
3305
# For each value in new config, check if it
3306
# differs from the old config value (Except for
3307
# the "secret" attribute)
3308
if (name != "secret"
3310
old_client_settings[client_name][name])):
3311
client[name] = value
3315
# Clients who has passed its expire date can still be
3316
# enabled if its last checker was successful. A Client
3317
# whose checker succeeded before we stored its state is
3318
# assumed to have successfully run all checkers during
3320
if client["enabled"]:
3321
if datetime.datetime.utcnow() >= client["expires"]:
3322
if not client["last_checked_ok"]:
3324
"disabling client {} - Client never "
3325
"performed a successful checker".format(
3327
client["enabled"] = False
3328
elif client["last_checker_status"] != 0:
3330
"disabling client {} - Client last"
3331
" checker failed with error code"
3334
client["last_checker_status"]))
3335
client["enabled"] = False
3337
client["expires"] = (
3338
datetime.datetime.utcnow()
3339
+ client["timeout"])
3340
logger.debug("Last checker succeeded,"
3341
" keeping {} enabled".format(
3344
client["secret"] = pgp.decrypt(
3345
client["encrypted_secret"],
3346
client_settings[client_name]["secret"])
3348
# If decryption fails, we use secret from new settings
3349
logger.debug("Failed to decrypt {} old secret".format(
3351
client["secret"] = (client_settings[client_name]
3354
# Add/remove clients based on new changes made to config
3355
for client_name in (set(old_client_settings)
3356
- set(client_settings)):
3357
del clients_data[client_name]
3358
for client_name in (set(client_settings)
3359
- set(old_client_settings)):
3360
clients_data[client_name] = client_settings[client_name]
3362
# Create all client objects
3363
for client_name, client in clients_data.items():
3364
tcp_server.clients[client_name] = client_class(
3367
server_settings=server_settings)
3369
if not tcp_server.clients:
3370
logger.warning("No clients defined")
3373
if pidfile is not None:
3377
print(pid, file=pidfile)
3379
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
3384
for termsig in (signal.SIGHUP, signal.SIGTERM):
3385
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3386
lambda: main_loop.quit() and False)
3390
@alternate_dbus_interfaces(
3391
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3392
class MandosDBusService(DBusObjectWithObjectManager):
3393
"""A D-Bus proxy object"""
3396
dbus.service.Object.__init__(self, bus, "/")
3398
_interface = "se.recompile.Mandos"
3400
@dbus.service.signal(_interface, signature="o")
3401
def ClientAdded(self, objpath):
3405
@dbus.service.signal(_interface, signature="ss")
3406
def ClientNotFound(self, key_id, address):
3410
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3412
@dbus.service.signal(_interface, signature="os")
3413
def ClientRemoved(self, objpath, name):
3417
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3419
@dbus.service.method(_interface, out_signature="ao")
3420
def GetAllClients(self):
3422
return dbus.Array(c.dbus_object_path for c in
3423
tcp_server.clients.values())
3425
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3427
@dbus.service.method(_interface,
3428
out_signature="a{oa{sv}}")
3429
def GetAllClientsWithProperties(self):
3431
return dbus.Dictionary(
3432
{c.dbus_object_path: c.GetAll(
3433
"se.recompile.Mandos.Client")
3434
for c in tcp_server.clients.values()},
3437
@dbus.service.method(_interface, in_signature="o")
3438
def RemoveClient(self, object_path):
3440
for c in tcp_server.clients.values():
3441
if c.dbus_object_path == object_path:
3442
del tcp_server.clients[c.name]
3443
c.remove_from_connection()
3444
# Don't signal the disabling
3445
c.disable(quiet=True)
3446
# Emit D-Bus signal for removal
3447
self.client_removed_signal(c)
3449
raise KeyError(object_path)
3453
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3454
out_signature="a{oa{sa{sv}}}")
3455
def GetManagedObjects(self):
3457
return dbus.Dictionary(
3458
{client.dbus_object_path:
3460
{interface: client.GetAll(interface)
3462
client._get_all_interface_names()})
3463
for client in tcp_server.clients.values()})
3465
def client_added_signal(self, client):
3466
"""Send the new standard signal and the old signal"""
3468
# New standard signal
3469
self.InterfacesAdded(
3470
client.dbus_object_path,
3472
{interface: client.GetAll(interface)
3474
client._get_all_interface_names()}))
3476
self.ClientAdded(client.dbus_object_path)
3478
def client_removed_signal(self, client):
3479
"""Send the new standard signal and the old signal"""
3481
# New standard signal
3482
self.InterfacesRemoved(
3483
client.dbus_object_path,
3484
client._get_all_interface_names())
3486
self.ClientRemoved(client.dbus_object_path,
3489
mandos_dbus_service = MandosDBusService()
3491
# Save modules to variables to exempt the modules from being
3492
# unloaded before the function registered with atexit() is run.
3493
mp = multiprocessing
966
3497
"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
3501
mp.active_children()
3503
if not (tcp_server.clients or client_settings):
3506
# Store client before exiting. Secrets are encrypted with key
3507
# based on what config file has. If config file is
3508
# removed/edited, old secret will thus be unrecovable.
3510
with PGPEngine() as pgp:
3511
for client in tcp_server.clients.values():
3512
key = client_settings[client.name]["secret"]
3513
client.encrypted_secret = pgp.encrypt(client.secret,
3517
# A list of attributes that can not be pickled
3519
exclude = {"bus", "changedstate", "secret",
3520
"checker", "server_settings"}
3521
for name, typ in inspect.getmembers(dbus.service
3525
client_dict["encrypted_secret"] = (client
3527
for attr in client.client_structure:
3528
if attr not in exclude:
3529
client_dict[attr] = getattr(client, attr)
3531
clients[client.name] = client_dict
3532
del client_settings[client.name]["secret"]
3535
with tempfile.NamedTemporaryFile(
3539
dir=os.path.dirname(stored_state_path),
3540
delete=False) as stored_state:
3541
pickle.dump((clients, client_settings), stored_state,
3543
tempname = stored_state.name
3544
os.rename(tempname, stored_state_path)
3545
except (IOError, OSError) as e:
3551
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3552
logger.warning("Could not save persistent state: {}"
3553
.format(os.strerror(e.errno)))
3555
logger.warning("Could not save persistent state:",
3559
# Delete all clients, and settings from config
3560
while tcp_server.clients:
3561
name, client = tcp_server.clients.popitem()
3563
client.remove_from_connection()
3564
# Don't signal the disabling
3565
client.disable(quiet=True)
3566
# Emit D-Bus signal for removal
3568
mandos_dbus_service.client_removed_signal(client)
3569
client_settings.clear()
979
3571
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:
3573
for client in tcp_server.clients.values():
3575
# Emit D-Bus signal for adding
3576
mandos_dbus_service.client_added_signal(client)
3577
# Need to initiate checking of clients
3579
client.init_checker()
989
3581
tcp_server.enable()
990
3582
tcp_server.server_activate()
992
3584
# 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]
3586
service.port = tcp_server.socket.getsockname()[1]
3588
logger.info("Now listening on address %r, port %d,"
3589
" flowinfo %d, scope_id %d",
3590
*tcp_server.socket.getsockname())
3592
logger.info("Now listening on address %r, port %d",
3593
*tcp_server.socket.getsockname())
3595
# 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")
3599
# From the Avahi example code
3602
except dbus.exceptions.DBusException as error:
3603
logger.critical("D-Bus Exception", exc_info=error)
3606
# End of Avahi example code
3609
GLib.IOChannel.unix_new(tcp_server.fileno()),
3610
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
3611
lambda *args, **kwargs: (tcp_server.handle_request
3612
(*args[2:], **kwargs) or True))
3614
logger.debug("Starting main loop")
1015
3615
main_loop.run()
1016
except AvahiError, error:
1017
logger.critical(u"AvahiError: %s" + unicode(error))
3616
except AvahiError as error:
3617
logger.critical("Avahi Error", exc_info=error)
1019
3620
except KeyboardInterrupt:
3622
print("", file=sys.stderr)
3623
logger.debug("Server received KeyboardInterrupt")
3624
logger.debug("Server exiting")
3625
# Must run before the D-Bus bus name gets deregistered
3629
def should_only_run_tests():
3630
parser = argparse.ArgumentParser(add_help=False)
3631
parser.add_argument("--check", action='store_true')
3632
args, unknown_args = parser.parse_known_args()
3633
run_tests = args.check
3635
# Remove --check argument from sys.argv
3636
sys.argv[1:] = unknown_args
3639
# Add all tests from doctest strings
3640
def load_tests(loader, tests, none):
3642
tests.addTests(doctest.DocTestSuite())
1023
3645
if __name__ == '__main__':
3647
if should_only_run_tests():
3648
# Call using ./mandos --check [--verbose]