86
82
SO_BINDTODEVICE = None
90
stored_state_file = "clients.pickle"
92
logger = logging.getLogger()
87
#logger = logging.getLogger('mandos')
88
logger = logging.Logger('mandos')
93
89
syslogger = (logging.handlers.SysLogHandler
94
90
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
95
91
address = str("/dev/log")))
98
if_nametoindex = (ctypes.cdll.LoadLibrary
99
(ctypes.util.find_library("c"))
101
except (OSError, AttributeError):
102
def if_nametoindex(interface):
103
"Get an interface index the hard way, i.e. using fcntl()"
104
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
105
with contextlib.closing(socket.socket()) as s:
106
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
107
struct.pack(str("16s16x"),
109
interface_index = struct.unpack(str("I"),
111
return interface_index
114
def initlogger(level=logging.WARNING):
115
"""init logger and add loglevel"""
117
syslogger.setFormatter(logging.Formatter
118
('Mandos [%(process)d]: %(levelname)s:'
120
logger.addHandler(syslogger)
122
console = logging.StreamHandler()
123
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
127
logger.addHandler(console)
128
logger.setLevel(level)
131
class PGPError(Exception):
132
"""Exception if encryption/decryption fails"""
136
class PGPEngine(object):
137
"""A simple class for OpenPGP symmetric encryption & decryption"""
139
self.gnupg = GnuPGInterface.GnuPG()
140
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
141
self.gnupg = GnuPGInterface.GnuPG()
142
self.gnupg.options.meta_interactive = False
143
self.gnupg.options.homedir = self.tempdir
144
self.gnupg.options.extra_args.extend(['--force-mdc',
150
def __exit__ (self, exc_type, exc_value, traceback):
158
if self.tempdir is not None:
159
# Delete contents of tempdir
160
for root, dirs, files in os.walk(self.tempdir,
162
for filename in files:
163
os.remove(os.path.join(root, filename))
165
os.rmdir(os.path.join(root, dirname))
167
os.rmdir(self.tempdir)
170
def password_encode(self, password):
171
# Passphrase can not be empty and can not contain newlines or
172
# NUL bytes. So we prefix it and hex encode it.
173
return b"mandos" + binascii.hexlify(password)
175
def encrypt(self, data, password):
176
self.gnupg.passphrase = self.password_encode(password)
177
with open(os.devnull) as devnull:
179
proc = self.gnupg.run(['--symmetric'],
180
create_fhs=['stdin', 'stdout'],
181
attach_fhs={'stderr': devnull})
182
with contextlib.closing(proc.handles['stdin']) as f:
184
with contextlib.closing(proc.handles['stdout']) as f:
185
ciphertext = f.read()
189
self.gnupg.passphrase = None
192
def decrypt(self, data, password):
193
self.gnupg.passphrase = self.password_encode(password)
194
with open(os.devnull) as devnull:
196
proc = self.gnupg.run(['--decrypt'],
197
create_fhs=['stdin', 'stdout'],
198
attach_fhs={'stderr': devnull})
199
with contextlib.closing(proc.handles['stdin'] ) as f:
201
with contextlib.closing(proc.handles['stdout']) as f:
202
decrypted_plaintext = f.read()
206
self.gnupg.passphrase = None
207
return decrypted_plaintext
92
syslogger.setFormatter(logging.Formatter
93
('Mandos [%(process)d]: %(levelname)s:'
95
logger.addHandler(syslogger)
97
console = logging.StreamHandler()
98
console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'
101
logger.addHandler(console)
211
103
class AvahiError(Exception):
212
104
def __init__(self, value, *args, **kwargs):
368
263
self.server_state_changed)
369
264
self.server_state_changed(self.server.GetState())
371
class AvahiServiceToSyslog(AvahiService):
373
"""Add the new name to the syslog messages"""
374
ret = AvahiService.rename(self)
375
syslogger.setFormatter(logging.Formatter
376
('Mandos (%s) [%%(process)d]:'
377
' %%(levelname)s: %%(message)s'
381
def timedelta_to_milliseconds(td):
382
"Convert a datetime.timedelta() to milliseconds"
383
return ((td.days * 24 * 60 * 60 * 1000)
384
+ (td.seconds * 1000)
385
+ (td.microseconds // 1000))
387
267
class Client(object):
388
268
"""A representation of a client host served by this server.
391
approved: bool(); 'None' if not yet approved/disapproved
271
_approved: bool(); 'None' if not yet approved/disapproved
392
272
approval_delay: datetime.timedelta(); Time to wait for approval
393
273
approval_duration: datetime.timedelta(); Duration of one approval
394
274
checker: subprocess.Popen(); a running checker process used
412
291
interval: datetime.timedelta(); How often to start a new checker
413
292
last_approval_request: datetime.datetime(); (UTC) or None
414
293
last_checked_ok: datetime.datetime(); (UTC) or None
416
last_checker_status: integer between 0 and 255 reflecting exit
417
status of last checker. -1 reflects crashed
419
last_enabled: datetime.datetime(); (UTC) or None
294
last_enabled: datetime.datetime(); (UTC)
420
295
name: string; from the config file, used in log messages and
421
296
D-Bus identifiers
422
297
secret: bytestring; sent verbatim (over TLS) to client
423
298
timeout: datetime.timedelta(); How long from last_checked_ok
424
299
until this client is disabled
425
extended_timeout: extra long timeout when password has been sent
426
300
runtime_expansions: Allowed attributes for runtime expansion.
427
expires: datetime.datetime(); time (UTC) when a client will be
431
303
runtime_expansions = ("approval_delay", "approval_duration",
433
305
"host", "interval", "last_checked_ok",
434
306
"last_enabled", "name", "timeout")
309
def _timedelta_to_milliseconds(td):
310
"Convert a datetime.timedelta() to milliseconds"
311
return ((td.days * 24 * 60 * 60 * 1000)
312
+ (td.seconds * 1000)
313
+ (td.microseconds // 1000))
436
315
def timeout_milliseconds(self):
437
316
"Return the 'timeout' attribute in milliseconds"
438
return timedelta_to_milliseconds(self.timeout)
440
def extended_timeout_milliseconds(self):
441
"Return the 'extended_timeout' attribute in milliseconds"
442
return timedelta_to_milliseconds(self.extended_timeout)
317
return self._timedelta_to_milliseconds(self.timeout)
444
319
def interval_milliseconds(self):
445
320
"Return the 'interval' attribute in milliseconds"
446
return timedelta_to_milliseconds(self.interval)
321
return self._timedelta_to_milliseconds(self.interval)
448
323
def approval_delay_milliseconds(self):
449
return timedelta_to_milliseconds(self.approval_delay)
324
return self._timedelta_to_milliseconds(self.approval_delay)
451
def __init__(self, name = None, config=None):
326
def __init__(self, name = None, disable_hook=None, config=None):
452
327
"""Note: the 'checker' key in 'config' sets the
453
328
'checker_command' attribute and *not* the 'checker'
475
350
self.host = config.get("host", "")
476
351
self.created = datetime.datetime.utcnow()
477
self.enabled = config.get("enabled", True)
478
353
self.last_approval_request = None
480
self.last_enabled = datetime.datetime.utcnow()
482
self.last_enabled = None
354
self.last_enabled = None
483
355
self.last_checked_ok = None
484
self.last_checker_status = None
485
356
self.timeout = string_to_delta(config["timeout"])
486
self.extended_timeout = string_to_delta(config
487
["extended_timeout"])
488
357
self.interval = string_to_delta(config["interval"])
358
self.disable_hook = disable_hook
489
359
self.checker = None
490
360
self.checker_initiator_tag = None
491
361
self.disable_initiator_tag = None
493
self.expires = datetime.datetime.utcnow() + self.timeout
496
362
self.checker_callback_tag = None
497
363
self.checker_command = config["checker"]
498
364
self.current_checker_command = None
365
self.last_connect = None
366
self._approved = None
500
367
self.approved_by_default = config.get("approved_by_default",
502
369
self.approvals_pending = 0
504
371
config["approval_delay"])
505
372
self.approval_duration = string_to_delta(
506
373
config["approval_duration"])
507
self.changedstate = (multiprocessing_manager
508
.Condition(multiprocessing_manager
510
self.client_structure = [attr for attr in
511
self.__dict__.iterkeys()
512
if not attr.startswith("_")]
513
self.client_structure.append("client_structure")
515
for name, t in inspect.getmembers(type(self),
519
if not name.startswith("_"):
520
self.client_structure.append(name)
374
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
522
# Send notice to process children that client state has changed
523
376
def send_changedstate(self):
524
with self.changedstate:
525
self.changedstate.notify_all()
377
self.changedstate.acquire()
378
self.changedstate.notify_all()
379
self.changedstate.release()
527
381
def enable(self):
528
382
"""Start this client's checker and timeout hooks"""
529
383
if getattr(self, "enabled", False):
530
384
# Already enabled
532
386
self.send_changedstate()
533
self.expires = datetime.datetime.utcnow() + self.timeout
535
387
self.last_enabled = datetime.datetime.utcnow()
388
# Schedule a new checker to be started an 'interval' from now,
389
# and every interval from then on.
390
self.checker_initiator_tag = (gobject.timeout_add
391
(self.interval_milliseconds(),
393
# Schedule a disable() when 'timeout' has passed
394
self.disable_initiator_tag = (gobject.timeout_add
395
(self.timeout_milliseconds(),
398
# Also start a new checker *right now*.
538
401
def disable(self, quiet=True):
539
402
"""Disable this client."""
546
409
if getattr(self, "disable_initiator_tag", False):
547
410
gobject.source_remove(self.disable_initiator_tag)
548
411
self.disable_initiator_tag = None
550
412
if getattr(self, "checker_initiator_tag", False):
551
413
gobject.source_remove(self.checker_initiator_tag)
552
414
self.checker_initiator_tag = None
553
415
self.stop_checker()
416
if self.disable_hook:
417
self.disable_hook(self)
554
418
self.enabled = False
555
419
# Do not run this again if called by a gobject.timeout_add
558
422
def __del__(self):
423
self.disable_hook = None
561
def init_checker(self):
562
# Schedule a new checker to be started an 'interval' from now,
563
# and every interval from then on.
564
self.checker_initiator_tag = (gobject.timeout_add
565
(self.interval_milliseconds(),
567
# Schedule a disable() when 'timeout' has passed
568
self.disable_initiator_tag = (gobject.timeout_add
569
(self.timeout_milliseconds(),
571
# Also start a new checker *right now*.
574
426
def checker_callback(self, pid, condition, command):
575
427
"""The checker has completed, so take appropriate actions."""
576
428
self.checker_callback_tag = None
577
429
self.checker = None
578
430
if os.WIFEXITED(condition):
579
self.last_checker_status = os.WEXITSTATUS(condition)
580
if self.last_checker_status == 0:
431
exitstatus = os.WEXITSTATUS(condition)
581
433
logger.info("Checker for %(name)s succeeded",
583
435
self.checked_ok()
585
437
logger.info("Checker for %(name)s failed",
588
self.last_checker_status = -1
589
440
logger.warning("Checker for %(name)s crashed?",
592
def checked_ok(self, timeout=None):
443
def checked_ok(self):
593
444
"""Bump up the timeout for this client.
595
446
This should only be called when the client has been seen,
599
timeout = self.timeout
600
449
self.last_checked_ok = datetime.datetime.utcnow()
601
if self.disable_initiator_tag is not None:
602
gobject.source_remove(self.disable_initiator_tag)
603
if getattr(self, "enabled", False):
604
self.disable_initiator_tag = (gobject.timeout_add
605
(timedelta_to_milliseconds
606
(timeout), self.disable))
607
self.expires = datetime.datetime.utcnow() + timeout
450
gobject.source_remove(self.disable_initiator_tag)
451
self.disable_initiator_tag = (gobject.timeout_add
452
(self.timeout_milliseconds(),
609
455
def need_approval(self):
610
456
self.last_approval_request = datetime.datetime.utcnow()
767
612
def _get_all_dbus_properties(self):
768
613
"""Returns a generator of (name, attribute) pairs
770
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
771
for cls in self.__class__.__mro__
615
return ((prop._dbus_name, prop)
772
616
for name, prop in
773
inspect.getmembers(cls, self._is_dbus_property))
617
inspect.getmembers(self, self._is_dbus_property))
775
619
def _get_dbus_property(self, interface_name, property_name):
776
620
"""Returns a bound method if one exists which is a D-Bus
777
621
property with the specified name and interface.
779
for cls in self.__class__.__mro__:
780
for name, value in (inspect.getmembers
781
(cls, self._is_dbus_property)):
782
if (value._dbus_name == property_name
783
and value._dbus_interface == interface_name):
784
return value.__get__(self)
623
for name in (property_name,
624
property_name + "_dbus_property"):
625
prop = getattr(self, name, None)
627
or not self._is_dbus_property(prop)
628
or prop._dbus_name != property_name
629
or (interface_name and prop._dbus_interface
630
and interface_name != prop._dbus_interface)):
786
633
# No such property
787
634
raise DBusPropertyNotFound(self.dbus_object_path + ":"
788
635
+ interface_name + "."
893
def datetime_to_dbus (dt, variant_level=0):
894
"""Convert a UTC datetime.datetime() to a D-Bus type."""
896
return dbus.String("", variant_level = variant_level)
897
return dbus.String(dt.isoformat(),
898
variant_level=variant_level)
901
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
903
"""Applied to an empty subclass of a D-Bus object, this metaclass
904
will add additional D-Bus attributes matching a certain pattern.
906
def __new__(mcs, name, bases, attr):
907
# Go through all the base classes which could have D-Bus
908
# methods, signals, or properties in them
909
for base in (b for b in bases
910
if issubclass(b, dbus.service.Object)):
911
# Go though all attributes of the base class
912
for attrname, attribute in inspect.getmembers(base):
913
# Ignore non-D-Bus attributes, and D-Bus attributes
914
# with the wrong interface name
915
if (not hasattr(attribute, "_dbus_interface")
916
or not attribute._dbus_interface
917
.startswith("se.recompile.Mandos")):
919
# Create an alternate D-Bus interface name based on
921
alt_interface = (attribute._dbus_interface
922
.replace("se.recompile.Mandos",
923
"se.bsnet.fukt.Mandos"))
924
# Is this a D-Bus signal?
925
if getattr(attribute, "_dbus_is_signal", False):
926
# Extract the original non-method function by
928
nonmethod_func = (dict(
929
zip(attribute.func_code.co_freevars,
930
attribute.__closure__))["func"]
932
# Create a new, but exactly alike, function
933
# object, and decorate it to be a new D-Bus signal
934
# with the alternate D-Bus interface name
935
new_function = (dbus.service.signal
937
attribute._dbus_signature)
939
nonmethod_func.func_code,
940
nonmethod_func.func_globals,
941
nonmethod_func.func_name,
942
nonmethod_func.func_defaults,
943
nonmethod_func.func_closure)))
944
# Define a creator of a function to call both the
945
# old and new functions, so both the old and new
946
# signals gets sent when the function is called
947
def fixscope(func1, func2):
948
"""This function is a scope container to pass
949
func1 and func2 to the "call_both" function
950
outside of its arguments"""
951
def call_both(*args, **kwargs):
952
"""This function will emit two D-Bus
953
signals by calling func1 and func2"""
954
func1(*args, **kwargs)
955
func2(*args, **kwargs)
957
# Create the "call_both" function and add it to
959
attr[attrname] = fixscope(attribute,
961
# Is this a D-Bus method?
962
elif getattr(attribute, "_dbus_is_method", False):
963
# Create a new, but exactly alike, function
964
# object. Decorate it to be a new D-Bus method
965
# with the alternate D-Bus interface name. Add it
967
attr[attrname] = (dbus.service.method
969
attribute._dbus_in_signature,
970
attribute._dbus_out_signature)
972
(attribute.func_code,
973
attribute.func_globals,
975
attribute.func_defaults,
976
attribute.func_closure)))
977
# Is this a D-Bus property?
978
elif getattr(attribute, "_dbus_is_property", False):
979
# Create a new, but exactly alike, function
980
# object, and decorate it to be a new D-Bus
981
# property with the alternate D-Bus interface
982
# name. Add it to the class.
983
attr[attrname] = (dbus_service_property
985
attribute._dbus_signature,
986
attribute._dbus_access,
988
._dbus_get_args_options
991
(attribute.func_code,
992
attribute.func_globals,
994
attribute.func_defaults,
995
attribute.func_closure)))
996
return type.__new__(mcs, name, bases, attr)
999
740
class ClientDBus(Client, DBusObjectWithProperties):
1000
741
"""A Client class using D-Bus
1024
764
DBusObjectWithProperties.__init__(self, self.bus,
1025
765
self.dbus_object_path)
1027
def notifychangeproperty(transform_func,
1028
dbus_name, type_func=lambda x: x,
1030
""" Modify a variable so that it's a property which announces
1031
its changes to DBus.
1033
transform_fun: Function that takes a value and a variant_level
1034
and transforms it to a D-Bus type.
1035
dbus_name: D-Bus name of the variable
1036
type_func: Function that transform the value before sending it
1037
to the D-Bus. Default: no transform
1038
variant_level: D-Bus variant level. Default: 1
1040
attrname = "_{0}".format(dbus_name)
1041
def setter(self, value):
1042
if hasattr(self, "dbus_object_path"):
1043
if (not hasattr(self, attrname) or
1044
type_func(getattr(self, attrname, None))
1045
!= type_func(value)):
1046
dbus_value = transform_func(type_func(value),
1049
self.PropertyChanged(dbus.String(dbus_name),
1051
setattr(self, attrname, value)
1053
return property(lambda self: getattr(self, attrname), setter)
1056
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1057
approvals_pending = notifychangeproperty(dbus.Boolean,
1060
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1061
last_enabled = notifychangeproperty(datetime_to_dbus,
1063
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1064
type_func = lambda checker:
1065
checker is not None)
1066
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1068
last_approval_request = notifychangeproperty(
1069
datetime_to_dbus, "LastApprovalRequest")
1070
approved_by_default = notifychangeproperty(dbus.Boolean,
1071
"ApprovedByDefault")
1072
approval_delay = notifychangeproperty(dbus.UInt16,
1075
timedelta_to_milliseconds)
1076
approval_duration = notifychangeproperty(
1077
dbus.UInt16, "ApprovalDuration",
1078
type_func = timedelta_to_milliseconds)
1079
host = notifychangeproperty(dbus.String, "Host")
1080
timeout = notifychangeproperty(dbus.UInt16, "Timeout",
1082
timedelta_to_milliseconds)
1083
extended_timeout = notifychangeproperty(
1084
dbus.UInt16, "ExtendedTimeout",
1085
type_func = timedelta_to_milliseconds)
1086
interval = notifychangeproperty(dbus.UInt16,
1089
timedelta_to_milliseconds)
1090
checker_command = notifychangeproperty(dbus.String, "Checker")
1092
del notifychangeproperty
767
def _get_approvals_pending(self):
768
return self._approvals_pending
769
def _set_approvals_pending(self, value):
770
old_value = self._approvals_pending
771
self._approvals_pending = value
773
if (hasattr(self, "dbus_object_path")
774
and bval is not bool(old_value)):
775
dbus_bool = dbus.Boolean(bval, variant_level=1)
776
self.PropertyChanged(dbus.String("ApprovalPending"),
779
approvals_pending = property(_get_approvals_pending,
780
_set_approvals_pending)
781
del _get_approvals_pending, _set_approvals_pending
784
def _datetime_to_dbus(dt, variant_level=0):
785
"""Convert a UTC datetime.datetime() to a D-Bus type."""
786
return dbus.String(dt.isoformat(),
787
variant_level=variant_level)
790
oldstate = getattr(self, "enabled", False)
791
r = Client.enable(self)
792
if oldstate != self.enabled:
794
self.PropertyChanged(dbus.String("Enabled"),
795
dbus.Boolean(True, variant_level=1))
796
self.PropertyChanged(
797
dbus.String("LastEnabled"),
798
self._datetime_to_dbus(self.last_enabled,
802
def disable(self, quiet = False):
803
oldstate = getattr(self, "enabled", False)
804
r = Client.disable(self, quiet=quiet)
805
if not quiet and oldstate != self.enabled:
807
self.PropertyChanged(dbus.String("Enabled"),
808
dbus.Boolean(False, variant_level=1))
1094
811
def __del__(self, *args, **kwargs):
1119
839
return Client.checker_callback(self, pid, condition, command,
1120
840
*args, **kwargs)
842
def checked_ok(self, *args, **kwargs):
843
Client.checked_ok(self, *args, **kwargs)
845
self.PropertyChanged(
846
dbus.String("LastCheckedOK"),
847
(self._datetime_to_dbus(self.last_checked_ok,
850
def need_approval(self, *args, **kwargs):
851
r = Client.need_approval(self, *args, **kwargs)
853
self.PropertyChanged(
854
dbus.String("LastApprovalRequest"),
855
(self._datetime_to_dbus(self.last_approval_request,
1122
859
def start_checker(self, *args, **kwargs):
1123
860
old_checker = self.checker
1124
861
if self.checker is not None:
1131
868
and old_checker_pid != self.checker.pid):
1132
869
# Emit D-Bus signal
1133
870
self.CheckerStarted(self.current_checker_command)
871
self.PropertyChanged(
872
dbus.String("CheckerRunning"),
873
dbus.Boolean(True, variant_level=1))
876
def stop_checker(self, *args, **kwargs):
877
old_checker = getattr(self, "checker", None)
878
r = Client.stop_checker(self, *args, **kwargs)
879
if (old_checker is not None
880
and getattr(self, "checker", None) is None):
881
self.PropertyChanged(dbus.String("CheckerRunning"),
882
dbus.Boolean(False, variant_level=1))
1136
885
def _reset_approved(self):
1137
self.approved = None
886
self._approved = None
1140
889
def approve(self, value=True):
1141
890
self.send_changedstate()
1142
self.approved = value
1143
gobject.timeout_add(timedelta_to_milliseconds
891
self._approved = value
892
gobject.timeout_add(self._timedelta_to_milliseconds
1144
893
(self.approval_duration),
1145
894
self._reset_approved)
1148
897
## D-Bus methods, signals & properties
1149
_interface = "se.recompile.Mandos.Client"
898
_interface = "se.bsnet.fukt.Mandos.Client"
1254
998
if value is None: # get
1255
999
return dbus.UInt64(self.approval_delay_milliseconds())
1256
1000
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1002
self.PropertyChanged(dbus.String("ApprovalDelay"),
1003
dbus.UInt64(value, variant_level=1))
1258
1005
# ApprovalDuration - property
1259
1006
@dbus_service_property(_interface, signature="t",
1260
1007
access="readwrite")
1261
1008
def ApprovalDuration_dbus_property(self, value=None):
1262
1009
if value is None: # get
1263
return dbus.UInt64(timedelta_to_milliseconds(
1010
return dbus.UInt64(self._timedelta_to_milliseconds(
1264
1011
self.approval_duration))
1265
1012
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1014
self.PropertyChanged(dbus.String("ApprovalDuration"),
1015
dbus.UInt64(value, variant_level=1))
1267
1017
# Name - property
1268
1018
@dbus_service_property(_interface, signature="s", access="read")
1281
1031
if value is None: # get
1282
1032
return dbus.String(self.host)
1283
1033
self.host = value
1035
self.PropertyChanged(dbus.String("Host"),
1036
dbus.String(value, variant_level=1))
1285
1038
# Created - property
1286
1039
@dbus_service_property(_interface, signature="s", access="read")
1287
1040
def Created_dbus_property(self):
1288
return datetime_to_dbus(self.created)
1041
return dbus.String(self._datetime_to_dbus(self.created))
1290
1043
# LastEnabled - property
1291
1044
@dbus_service_property(_interface, signature="s", access="read")
1292
1045
def LastEnabled_dbus_property(self):
1293
return datetime_to_dbus(self.last_enabled)
1046
if self.last_enabled is None:
1047
return dbus.String("")
1048
return dbus.String(self._datetime_to_dbus(self.last_enabled))
1295
1050
# Enabled - property
1296
1051
@dbus_service_property(_interface, signature="b",
1329
1086
if value is None: # get
1330
1087
return dbus.UInt64(self.timeout_milliseconds())
1331
1088
self.timeout = datetime.timedelta(0, 0, 0, value)
1090
self.PropertyChanged(dbus.String("Timeout"),
1091
dbus.UInt64(value, variant_level=1))
1332
1092
if getattr(self, "disable_initiator_tag", None) is None:
1334
1094
# Reschedule timeout
1335
1095
gobject.source_remove(self.disable_initiator_tag)
1336
1096
self.disable_initiator_tag = None
1338
time_to_die = timedelta_to_milliseconds((self
1097
time_to_die = (self.
1098
_timedelta_to_milliseconds((self
1343
1103
if time_to_die <= 0:
1344
1104
# The timeout has passed
1347
self.expires = (datetime.datetime.utcnow()
1348
+ datetime.timedelta(milliseconds =
1350
1107
self.disable_initiator_tag = (gobject.timeout_add
1351
1108
(time_to_die, self.disable))
1353
# ExtendedTimeout - property
1354
@dbus_service_property(_interface, signature="t",
1356
def ExtendedTimeout_dbus_property(self, value=None):
1357
if value is None: # get
1358
return dbus.UInt64(self.extended_timeout_milliseconds())
1359
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1361
1110
# Interval - property
1362
1111
@dbus_service_property(_interface, signature="t",
1363
1112
access="readwrite")
1365
1114
if value is None: # get
1366
1115
return dbus.UInt64(self.interval_milliseconds())
1367
1116
self.interval = datetime.timedelta(0, 0, 0, value)
1118
self.PropertyChanged(dbus.String("Interval"),
1119
dbus.UInt64(value, variant_level=1))
1368
1120
if getattr(self, "checker_initiator_tag", None) is None:
1371
# Reschedule checker run
1372
gobject.source_remove(self.checker_initiator_tag)
1373
self.checker_initiator_tag = (gobject.timeout_add
1374
(value, self.start_checker))
1375
self.start_checker() # Start one now, too
1122
# Reschedule checker run
1123
gobject.source_remove(self.checker_initiator_tag)
1124
self.checker_initiator_tag = (gobject.timeout_add
1125
(value, self.start_checker))
1126
self.start_checker() # Start one now, too
1377
1128
# Checker - property
1378
1129
@dbus_service_property(_interface, signature="s",
1379
1130
access="readwrite")
1449
1200
unicode(self.client_address))
1450
1201
logger.debug("Pipe FD: %d",
1451
1202
self.server.child_pipe.fileno())
1453
1204
session = (gnutls.connection
1454
1205
.ClientSession(self.request,
1455
1206
gnutls.connection
1456
1207
.X509Credentials()))
1458
1209
# Note: gnutls.connection.X509Credentials is really a
1459
1210
# generic GnuTLS certificate credentials object so long as
1460
1211
# no X.509 keys are added to it. Therefore, we can use it
1461
1212
# here despite using OpenPGP certificates.
1463
1214
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1464
1215
# "+AES-256-CBC", "+SHA1",
1465
1216
# "+COMP-NULL", "+CTYPE-OPENPGP",
1686
1428
This function creates a new pipe in self.pipe
1688
1430
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1690
proc = MultiprocessingMixIn.process_request(self, request,
1432
super(MultiprocessingMixInWithPipe,
1433
self).process_request(request, client_address)
1692
1434
self.child_pipe.close()
1693
self.add_pipe(parent_pipe, proc)
1695
def add_pipe(self, parent_pipe, proc):
1435
self.add_pipe(parent_pipe)
1437
def add_pipe(self, parent_pipe):
1696
1438
"""Dummy function; override as necessary"""
1697
1439
raise NotImplementedError
1700
1441
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1701
1442
socketserver.TCPServer, object):
1702
1443
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1786
1527
def server_activate(self):
1787
1528
if self.enabled:
1788
1529
return socketserver.TCPServer.server_activate(self)
1790
1530
def enable(self):
1791
1531
self.enabled = True
1793
def add_pipe(self, parent_pipe, proc):
1532
def add_pipe(self, parent_pipe):
1794
1533
# Call "handle_ipc" for both data and EOF events
1795
1534
gobject.io_add_watch(parent_pipe.fileno(),
1796
1535
gobject.IO_IN | gobject.IO_HUP,
1797
1536
functools.partial(self.handle_ipc,
1537
parent_pipe = parent_pipe))
1802
1539
def handle_ipc(self, source, condition, parent_pipe=None,
1803
proc = None, client_object=None):
1540
client_object=None):
1804
1541
condition_names = {
1805
1542
gobject.IO_IN: "IN", # There is data to read.
1806
1543
gobject.IO_OUT: "OUT", # Data can be written (without
1829
1564
fpr = request[1]
1830
1565
address = request[2]
1832
for c in self.clients.itervalues():
1567
for c in self.clients:
1833
1568
if c.fingerprint == fpr:
1837
logger.info("Client not found for fingerprint: %s, ad"
1838
"dress: %s", fpr, address)
1572
logger.warning("Client not found for fingerprint: %s, ad"
1573
"dress: %s", fpr, address)
1839
1574
if self.use_dbus:
1840
1575
# Emit D-Bus signal
1841
mandos_dbus_service.ClientNotFound(fpr,
1576
mandos_dbus_service.ClientNotFound(fpr, address[0])
1843
1577
parent_pipe.send(False)
1846
1580
gobject.io_add_watch(parent_pipe.fileno(),
1847
1581
gobject.IO_IN | gobject.IO_HUP,
1848
1582
functools.partial(self.handle_ipc,
1583
parent_pipe = parent_pipe,
1584
client_object = client))
1854
1585
parent_pipe.send(True)
1855
# remove the old hook in favor of the new above hook on
1586
# remove the old hook in favor of the new above hook on same fileno
1858
1588
if command == 'funcall':
1859
1589
funcname = request[1]
1860
1590
args = request[2]
1861
1591
kwargs = request[3]
1863
parent_pipe.send(('data', getattr(client_object,
1593
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
1867
1595
if command == 'getattr':
1868
1596
attrname = request[1]
1869
1597
if callable(client_object.__getattribute__(attrname)):
1870
1598
parent_pipe.send(('function',))
1872
parent_pipe.send(('data', client_object
1873
.__getattribute__(attrname)))
1600
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
1875
1602
if command == 'setattr':
1876
1603
attrname = request[1]
1877
1604
value = request[2]
1878
1605
setattr(client_object, attrname, value)
1919
1646
return timevalue
1649
def if_nametoindex(interface):
1650
"""Call the C function if_nametoindex(), or equivalent
1652
Note: This function cannot accept a unicode string."""
1653
global if_nametoindex
1655
if_nametoindex = (ctypes.cdll.LoadLibrary
1656
(ctypes.util.find_library("c"))
1658
except (OSError, AttributeError):
1659
logger.warning("Doing if_nametoindex the hard way")
1660
def if_nametoindex(interface):
1661
"Get an interface index the hard way, i.e. using fcntl()"
1662
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1663
with contextlib.closing(socket.socket()) as s:
1664
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1665
struct.pack(str("16s16x"),
1667
interface_index = struct.unpack(str("I"),
1669
return interface_index
1670
return if_nametoindex(interface)
1922
1673
def daemon(nochdir = False, noclose = False):
1923
1674
"""See daemon(3). Standard BSD Unix function.
2153
1891
# End of Avahi example code
2156
bus_name = dbus.service.BusName("se.recompile.Mandos",
1894
bus_name = dbus.service.BusName("se.bsnet.fukt.Mandos",
2157
1895
bus, do_not_queue=True)
2158
old_bus_name = (dbus.service.BusName
2159
("se.bsnet.fukt.Mandos", bus,
2161
1896
except dbus.exceptions.NameExistsException as e:
2162
1897
logger.error(unicode(e) + ", disabling D-Bus")
2163
1898
use_dbus = False
2164
1899
server_settings["use_dbus"] = False
2165
1900
tcp_server.use_dbus = False
2166
1901
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2167
service = AvahiServiceToSyslog(name =
2168
server_settings["servicename"],
2169
servicetype = "_mandos._tcp",
2170
protocol = protocol, bus = bus)
1902
service = AvahiService(name = server_settings["servicename"],
1903
servicetype = "_mandos._tcp",
1904
protocol = protocol, bus = bus)
2171
1905
if server_settings["interface"]:
2172
1906
service.interface = (if_nametoindex
2173
1907
(str(server_settings["interface"])))
2178
1912
client_class = Client
2180
client_class = functools.partial(ClientDBusTransitional,
2183
special_settings = {
2184
# Some settings need to be accessd by special methods;
2185
# booleans need .getboolean(), etc. Here is a list of them:
2186
"approved_by_default":
2188
client_config.getboolean(section, "approved_by_default"),
2191
client_config.getboolean(section, "enabled"),
2193
# Construct a new dict of client settings of this form:
2194
# { client_name: {setting_name: value, ...}, ...}
2195
# with exceptions for any special settings as defined above
2196
client_settings = dict((clientname,
2199
if setting not in special_settings
2200
else special_settings[setting]
2202
for setting, value in
2203
client_config.items(clientname)))
2204
for clientname in client_config.sections())
2206
old_client_settings = {}
2209
# Get client data and settings from last running state.
2210
if server_settings["restore"]:
2212
with open(stored_state_path, "rb") as stored_state:
2213
clients_data, old_client_settings = (pickle.load
2215
os.remove(stored_state_path)
2216
except IOError as e:
2217
logger.warning("Could not load persistent state: {0}"
2219
if e.errno != errno.ENOENT:
2222
with PGPEngine() as pgp:
2223
for client in clients_data:
2224
client_name = client["name"]
2226
# Decide which value to use after restoring saved state.
2227
# We have three different values: Old config file,
2228
# new config file, and saved state.
2229
# New config value takes precedence if it differs from old
2230
# config value, otherwise use saved state.
2231
for name, value in client_settings[client_name].items():
2233
# For each value in new config, check if it
2234
# differs from the old config value (Except for
2235
# the "secret" attribute)
2236
if (name != "secret" and
2237
value != old_client_settings[client_name]
2239
setattr(client, name, value)
2243
# Clients who has passed its expire date can still be
2244
# enabled if its last checker was sucessful. Clients
2245
# whose checker failed before we stored its state is
2246
# assumed to have failed all checkers during downtime.
2247
if client["enabled"] and client["last_checked_ok"]:
2248
if ((datetime.datetime.utcnow()
2249
- client["last_checked_ok"])
2250
> client["interval"]):
2251
if client["last_checker_status"] != 0:
2252
client["enabled"] = False
2254
client["expires"] = (datetime.datetime
2256
+ client["timeout"])
2258
client["changedstate"] = (multiprocessing_manager
2260
(multiprocessing_manager
2263
new_client = (ClientDBusTransitional.__new__
2264
(ClientDBusTransitional))
2265
tcp_server.clients[client_name] = new_client
2266
new_client.bus = bus
2267
for name, value in client.iteritems():
2268
setattr(new_client, name, value)
2269
client_object_name = unicode(client_name).translate(
2270
{ord("."): ord("_"),
2271
ord("-"): ord("_")})
2272
new_client.dbus_object_path = (dbus.ObjectPath
2274
+ client_object_name))
2275
DBusObjectWithProperties.__init__(new_client,
2280
tcp_server.clients[client_name] = (Client.__new__
2282
for name, value in client.iteritems():
2283
setattr(tcp_server.clients[client_name],
1914
client_class = functools.partial(ClientDBus, bus = bus)
1915
def client_config_items(config, section):
1916
special_settings = {
1917
"approved_by_default":
1918
lambda: config.getboolean(section,
1919
"approved_by_default"),
1921
for name, value in config.items(section):
2287
tcp_server.clients[client_name].secret = (
2288
pgp.decrypt(tcp_server.clients[client_name]
2290
client_settings[client_name]
2293
# If decryption fails, we use secret from new settings
2294
logger.debug("Failed to decrypt {0} old secret"
2295
.format(client_name))
2296
tcp_server.clients[client_name].secret = (
2297
client_settings[client_name]["secret"])
2299
# Create/remove clients based on new changes made to config
2300
for clientname in set(old_client_settings) - set(client_settings):
2301
del tcp_server.clients[clientname]
2302
for clientname in set(client_settings) - set(old_client_settings):
2303
tcp_server.clients[clientname] = (client_class(name
1923
yield (name, special_settings[name]())
1927
tcp_server.clients.update(set(
1928
client_class(name = section,
1929
config= dict(client_config_items(
1930
client_config, section)))
1931
for section in client_config.sections()))
2309
1932
if not tcp_server.clients:
2310
1933
logger.warning("No clients defined")
2385
class MandosDBusServiceTransitional(MandosDBusService):
2386
__metaclass__ = AlternateDBusNamesMetaclass
2387
mandos_dbus_service = MandosDBusServiceTransitional()
2007
mandos_dbus_service = MandosDBusService()
2390
2010
"Cleanup function; run on exit"
2391
2011
service.cleanup()
2393
multiprocessing.active_children()
2394
if not (tcp_server.clients or client_settings):
2397
# Store client before exiting. Secrets are encrypted with key
2398
# based on what config file has. If config file is
2399
# removed/edited, old secret will thus be unrecovable.
2401
with PGPEngine() as pgp:
2402
for client in tcp_server.clients.itervalues():
2403
key = client_settings[client.name]["secret"]
2404
client.encrypted_secret = pgp.encrypt(client.secret,
2408
# A list of attributes that will not be stored when
2410
exclude = set(("bus", "changedstate", "secret"))
2411
for name, typ in (inspect.getmembers
2412
(dbus.service.Object)):
2415
client_dict["encrypted_secret"] = (client
2417
for attr in client.client_structure:
2418
if attr not in exclude:
2419
client_dict[attr] = getattr(client, attr)
2421
clients.append(client_dict)
2422
del client_settings[client.name]["secret"]
2425
with os.fdopen(os.open(stored_state_path,
2426
os.O_CREAT|os.O_WRONLY|os.O_TRUNC,
2427
0600), "wb") as stored_state:
2428
pickle.dump((clients, client_settings), stored_state)
2429
except (IOError, OSError) as e:
2430
logger.warning("Could not save persistent state: {0}"
2432
if e.errno not in (errno.ENOENT, errno.EACCES):
2435
# Delete all clients, and settings from config
2436
2013
while tcp_server.clients:
2437
name, client = tcp_server.clients.popitem()
2014
client = tcp_server.clients.pop()
2439
2016
client.remove_from_connection()
2017
client.disable_hook = None
2440
2018
# Don't signal anything except ClientRemoved
2441
2019
client.disable(quiet=True)
2443
2021
# Emit D-Bus signal
2444
mandos_dbus_service.ClientRemoved(client
2022
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
2447
client_settings.clear()
2449
2025
atexit.register(cleanup)
2451
for client in tcp_server.clients.itervalues():
2027
for client in tcp_server.clients:
2453
2029
# Emit D-Bus signal
2454
2030
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2455
# Need to initiate checking of clients
2457
client.init_checker()
2459
2033
tcp_server.enable()
2460
2034
tcp_server.server_activate()