85
81
except ImportError:
86
82
SO_BINDTODEVICE = None
89
stored_state_file = "clients.pickle"
91
logger = logging.getLogger()
87
#logger = logging.getLogger('mandos')
88
logger = logging.Logger('mandos')
92
89
syslogger = (logging.handlers.SysLogHandler
93
90
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
94
91
address = str("/dev/log")))
97
if_nametoindex = (ctypes.cdll.LoadLibrary
98
(ctypes.util.find_library("c"))
100
except (OSError, AttributeError):
101
def if_nametoindex(interface):
102
"Get an interface index the hard way, i.e. using fcntl()"
103
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
104
with contextlib.closing(socket.socket()) as s:
105
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
106
struct.pack(str("16s16x"),
108
interface_index = struct.unpack(str("I"),
110
return interface_index
113
def initlogger(debug, level=logging.WARNING):
114
"""init logger and add loglevel"""
116
syslogger.setFormatter(logging.Formatter
117
('Mandos [%(process)d]: %(levelname)s:'
119
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):
267
158
" after %i retries, exiting.",
268
159
self.rename_count)
269
160
raise AvahiServiceError("Too many renames")
270
self.name = unicode(self.server
271
.GetAlternativeServiceName(self.name))
161
self.name = unicode(self.server.GetAlternativeServiceName(self.name))
272
162
logger.info("Changing Zeroconf service name to %r ...",
164
syslogger.setFormatter(logging.Formatter
165
('Mandos (%s) [%%(process)d]:'
166
' %%(levelname)s: %%(message)s'
277
except dbus.exceptions.DBusException as error:
171
except dbus.exceptions.DBusException, error:
278
172
logger.critical("DBusException: %s", error)
281
175
self.rename_count += 1
282
176
def remove(self):
283
177
"""Derived from the Avahi example code"""
284
if self.entry_group_state_changed_match is not None:
285
self.entry_group_state_changed_match.remove()
286
self.entry_group_state_changed_match = None
287
178
if self.group is not None:
288
179
self.group.Reset()
290
181
"""Derived from the Avahi example code"""
292
182
if self.group is None:
293
183
self.group = dbus.Interface(
294
184
self.bus.get_object(avahi.DBUS_NAME,
295
185
self.server.EntryGroupNew()),
296
186
avahi.DBUS_INTERFACE_ENTRY_GROUP)
297
self.entry_group_state_changed_match = (
298
self.group.connect_to_signal(
299
'StateChanged', self.entry_group_state_changed))
187
self.group.connect_to_signal('StateChanged',
189
.entry_group_state_changed)
300
190
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
301
191
self.name, self.type)
302
192
self.group.AddService(
325
215
def cleanup(self):
326
216
"""Derived from the Avahi example code"""
327
217
if self.group is not None:
330
except (dbus.exceptions.UnknownMethodException,
331
dbus.exceptions.DBusException):
333
219
self.group = None
335
def server_state_changed(self, state, error=None):
220
def server_state_changed(self, state):
336
221
"""Derived from the Avahi example code"""
337
222
logger.debug("Avahi server state change: %i", state)
338
bad_states = { avahi.SERVER_INVALID:
339
"Zeroconf server invalid",
340
avahi.SERVER_REGISTERING: None,
341
avahi.SERVER_COLLISION:
342
"Zeroconf server name collision",
343
avahi.SERVER_FAILURE:
344
"Zeroconf server failure" }
345
if state in bad_states:
346
if bad_states[state] is not None:
348
logger.error(bad_states[state])
350
logger.error(bad_states[state] + ": %r", error)
223
if state == avahi.SERVER_COLLISION:
224
logger.error("Zeroconf server name collision")
352
226
elif state == avahi.SERVER_RUNNING:
356
logger.debug("Unknown state: %r", state)
358
logger.debug("Unknown state: %r: %r", state, error)
359
228
def activate(self):
360
229
"""Derived from the Avahi example code"""
361
230
if self.server is None:
362
231
self.server = dbus.Interface(
363
232
self.bus.get_object(avahi.DBUS_NAME,
364
avahi.DBUS_PATH_SERVER,
365
follow_name_owner_changes=True),
233
avahi.DBUS_PATH_SERVER),
366
234
avahi.DBUS_INTERFACE_SERVER)
367
235
self.server.connect_to_signal("StateChanged",
368
236
self.server_state_changed)
369
237
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
240
class Client(object):
388
241
"""A representation of a client host served by this server.
391
approved: bool(); 'None' if not yet approved/disapproved
244
_approved: bool(); 'None' if not yet approved/disapproved
392
245
approval_delay: datetime.timedelta(); Time to wait for approval
393
246
approval_duration: datetime.timedelta(); Duration of one approval
394
247
checker: subprocess.Popen(); a running checker process used
412
264
interval: datetime.timedelta(); How often to start a new checker
413
265
last_approval_request: datetime.datetime(); (UTC) or None
414
266
last_checked_ok: datetime.datetime(); (UTC) or None
415
last_checker_status: integer between 0 and 255 reflecting exit
416
status of last checker. -1 reflects crashed
418
last_enabled: datetime.datetime(); (UTC) or None
267
last_enabled: datetime.datetime(); (UTC)
419
268
name: string; from the config file, used in log messages and
420
269
D-Bus identifiers
421
270
secret: bytestring; sent verbatim (over TLS) to client
422
271
timeout: datetime.timedelta(); How long from last_checked_ok
423
272
until this client is disabled
424
extended_timeout: extra long timeout when password has been sent
425
273
runtime_expansions: Allowed attributes for runtime expansion.
426
expires: datetime.datetime(); time (UTC) when a client will be
430
276
runtime_expansions = ("approval_delay", "approval_duration",
431
277
"created", "enabled", "fingerprint",
432
278
"host", "interval", "last_checked_ok",
433
279
"last_enabled", "name", "timeout")
434
client_defaults = { "timeout": "5m",
435
"extended_timeout": "15m",
437
"checker": "fping -q -- %%(host)s",
439
"approval_delay": "0s",
440
"approval_duration": "1s",
441
"approved_by_default": "True",
282
def _timedelta_to_milliseconds(td):
283
"Convert a datetime.timedelta() to milliseconds"
284
return ((td.days * 24 * 60 * 60 * 1000)
285
+ (td.seconds * 1000)
286
+ (td.microseconds // 1000))
445
288
def timeout_milliseconds(self):
446
289
"Return the 'timeout' attribute in milliseconds"
447
return timedelta_to_milliseconds(self.timeout)
449
def extended_timeout_milliseconds(self):
450
"Return the 'extended_timeout' attribute in milliseconds"
451
return timedelta_to_milliseconds(self.extended_timeout)
290
return self._timedelta_to_milliseconds(self.timeout)
453
292
def interval_milliseconds(self):
454
293
"Return the 'interval' attribute in milliseconds"
455
return timedelta_to_milliseconds(self.interval)
294
return self._timedelta_to_milliseconds(self.interval)
457
296
def approval_delay_milliseconds(self):
458
return timedelta_to_milliseconds(self.approval_delay)
461
def config_parser(config):
462
""" Construct a new dict of client settings of this form:
463
{ client_name: {setting_name: value, ...}, ...}
464
with exceptions for any special settings as defined above"""
466
for client_name in config.sections():
467
section = dict(config.items(client_name))
468
client = settings[client_name] = {}
470
client["host"] = section["host"]
471
# Reformat values from string types to Python types
472
client["approved_by_default"] = config.getboolean(
473
client_name, "approved_by_default")
474
client["enabled"] = config.getboolean(client_name, "enabled")
476
client["fingerprint"] = (section["fingerprint"].upper()
478
if "secret" in section:
479
client["secret"] = section["secret"].decode("base64")
480
elif "secfile" in section:
481
with open(os.path.expanduser(os.path.expandvars
482
(section["secfile"])),
484
client["secret"] = secfile.read()
486
raise TypeError("No secret or secfile for section %s"
488
client["timeout"] = string_to_delta(section["timeout"])
489
client["extended_timeout"] = string_to_delta(
490
section["extended_timeout"])
491
client["interval"] = string_to_delta(section["interval"])
492
client["approval_delay"] = string_to_delta(
493
section["approval_delay"])
494
client["approval_duration"] = string_to_delta(
495
section["approval_duration"])
496
client["checker_command"] = section["checker"]
497
client["last_approval_request"] = None
498
client["last_checked_ok"] = None
499
client["last_checker_status"] = None
500
if client["enabled"]:
501
client["last_enabled"] = datetime.datetime.utcnow()
502
client["expires"] = (datetime.datetime.utcnow()
505
client["last_enabled"] = None
506
client["expires"] = None
511
def __init__(self, settings, name = None):
297
return self._timedelta_to_milliseconds(self.approval_delay)
299
def __init__(self, name = None, disable_hook=None, config=None):
512
300
"""Note: the 'checker' key in 'config' sets the
513
301
'checker_command' attribute and *not* the 'checker'
516
# adding all client settings
517
for setting, value in settings.iteritems():
518
setattr(self, setting, value)
520
306
logger.debug("Creating client %r", self.name)
521
307
# Uppercase and remove spaces from fingerprint for later
522
308
# comparison purposes with return value from the fingerprint()
310
self.fingerprint = (config["fingerprint"].upper()
524
312
logger.debug(" Fingerprint: %s", self.fingerprint)
525
self.created = settings.get("created", datetime.datetime.utcnow())
527
# attributes specific for this server instance
313
if "secret" in config:
314
self.secret = config["secret"].decode("base64")
315
elif "secfile" in config:
316
with open(os.path.expanduser(os.path.expandvars
317
(config["secfile"])),
319
self.secret = secfile.read()
321
raise TypeError("No secret or secfile for client %s"
323
self.host = config.get("host", "")
324
self.created = datetime.datetime.utcnow()
326
self.last_approval_request = None
327
self.last_enabled = None
328
self.last_checked_ok = None
329
self.timeout = string_to_delta(config["timeout"])
330
self.interval = string_to_delta(config["interval"])
331
self.disable_hook = disable_hook
528
332
self.checker = None
529
333
self.checker_initiator_tag = None
530
334
self.disable_initiator_tag = None
531
335
self.checker_callback_tag = None
336
self.checker_command = config["checker"]
532
337
self.current_checker_command = None
338
self.last_connect = None
339
self._approved = None
340
self.approved_by_default = config.get("approved_by_default",
534
342
self.approvals_pending = 0
535
self.changedstate = (multiprocessing_manager
536
.Condition(multiprocessing_manager
538
self.client_structure = [attr for attr in
539
self.__dict__.iterkeys()
540
if not attr.startswith("_")]
541
self.client_structure.append("client_structure")
543
for name, t in inspect.getmembers(type(self),
547
if not name.startswith("_"):
548
self.client_structure.append(name)
343
self.approval_delay = string_to_delta(
344
config["approval_delay"])
345
self.approval_duration = string_to_delta(
346
config["approval_duration"])
347
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
550
# Send notice to process children that client state has changed
551
349
def send_changedstate(self):
552
with self.changedstate:
553
self.changedstate.notify_all()
350
self.changedstate.acquire()
351
self.changedstate.notify_all()
352
self.changedstate.release()
555
354
def enable(self):
556
355
"""Start this client's checker and timeout hooks"""
557
356
if getattr(self, "enabled", False):
558
357
# Already enabled
560
359
self.send_changedstate()
561
self.expires = datetime.datetime.utcnow() + self.timeout
563
360
self.last_enabled = datetime.datetime.utcnow()
361
# Schedule a new checker to be started an 'interval' from now,
362
# and every interval from then on.
363
self.checker_initiator_tag = (gobject.timeout_add
364
(self.interval_milliseconds(),
366
# Schedule a disable() when 'timeout' has passed
367
self.disable_initiator_tag = (gobject.timeout_add
368
(self.timeout_milliseconds(),
371
# Also start a new checker *right now*.
566
374
def disable(self, quiet=True):
567
375
"""Disable this client."""
795
585
def _get_all_dbus_properties(self):
796
586
"""Returns a generator of (name, attribute) pairs
798
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
799
for cls in self.__class__.__mro__
588
return ((prop._dbus_name, prop)
800
589
for name, prop in
801
inspect.getmembers(cls, self._is_dbus_property))
590
inspect.getmembers(self, self._is_dbus_property))
803
592
def _get_dbus_property(self, interface_name, property_name):
804
593
"""Returns a bound method if one exists which is a D-Bus
805
594
property with the specified name and interface.
807
for cls in self.__class__.__mro__:
808
for name, value in (inspect.getmembers
809
(cls, self._is_dbus_property)):
810
if (value._dbus_name == property_name
811
and value._dbus_interface == interface_name):
812
return value.__get__(self)
596
for name in (property_name,
597
property_name + "_dbus_property"):
598
prop = getattr(self, name, None)
600
or not self._is_dbus_property(prop)
601
or prop._dbus_name != property_name
602
or (interface_name and prop._dbus_interface
603
and interface_name != prop._dbus_interface)):
814
606
# No such property
815
607
raise DBusPropertyNotFound(self.dbus_object_path + ":"
816
608
+ interface_name + "."
912
704
xmlstring = document.toxml("utf-8")
913
705
document.unlink()
914
706
except (AttributeError, xml.dom.DOMException,
915
xml.parsers.expat.ExpatError) as error:
707
xml.parsers.expat.ExpatError), error:
916
708
logger.error("Failed to override Introspection method",
921
def datetime_to_dbus (dt, variant_level=0):
922
"""Convert a UTC datetime.datetime() to a D-Bus type."""
924
return dbus.String("", variant_level = variant_level)
925
return dbus.String(dt.isoformat(),
926
variant_level=variant_level)
929
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
931
"""Applied to an empty subclass of a D-Bus object, this metaclass
932
will add additional D-Bus attributes matching a certain pattern.
934
def __new__(mcs, name, bases, attr):
935
# Go through all the base classes which could have D-Bus
936
# methods, signals, or properties in them
937
for base in (b for b in bases
938
if issubclass(b, dbus.service.Object)):
939
# Go though all attributes of the base class
940
for attrname, attribute in inspect.getmembers(base):
941
# Ignore non-D-Bus attributes, and D-Bus attributes
942
# with the wrong interface name
943
if (not hasattr(attribute, "_dbus_interface")
944
or not attribute._dbus_interface
945
.startswith("se.recompile.Mandos")):
947
# Create an alternate D-Bus interface name based on
949
alt_interface = (attribute._dbus_interface
950
.replace("se.recompile.Mandos",
951
"se.bsnet.fukt.Mandos"))
952
# Is this a D-Bus signal?
953
if getattr(attribute, "_dbus_is_signal", False):
954
# Extract the original non-method function by
956
nonmethod_func = (dict(
957
zip(attribute.func_code.co_freevars,
958
attribute.__closure__))["func"]
960
# Create a new, but exactly alike, function
961
# object, and decorate it to be a new D-Bus signal
962
# with the alternate D-Bus interface name
963
new_function = (dbus.service.signal
965
attribute._dbus_signature)
967
nonmethod_func.func_code,
968
nonmethod_func.func_globals,
969
nonmethod_func.func_name,
970
nonmethod_func.func_defaults,
971
nonmethod_func.func_closure)))
972
# Define a creator of a function to call both the
973
# old and new functions, so both the old and new
974
# signals gets sent when the function is called
975
def fixscope(func1, func2):
976
"""This function is a scope container to pass
977
func1 and func2 to the "call_both" function
978
outside of its arguments"""
979
def call_both(*args, **kwargs):
980
"""This function will emit two D-Bus
981
signals by calling func1 and func2"""
982
func1(*args, **kwargs)
983
func2(*args, **kwargs)
985
# Create the "call_both" function and add it to
987
attr[attrname] = fixscope(attribute,
989
# Is this a D-Bus method?
990
elif getattr(attribute, "_dbus_is_method", False):
991
# Create a new, but exactly alike, function
992
# object. Decorate it to be a new D-Bus method
993
# with the alternate D-Bus interface name. Add it
995
attr[attrname] = (dbus.service.method
997
attribute._dbus_in_signature,
998
attribute._dbus_out_signature)
1000
(attribute.func_code,
1001
attribute.func_globals,
1002
attribute.func_name,
1003
attribute.func_defaults,
1004
attribute.func_closure)))
1005
# Is this a D-Bus property?
1006
elif getattr(attribute, "_dbus_is_property", False):
1007
# Create a new, but exactly alike, function
1008
# object, and decorate it to be a new D-Bus
1009
# property with the alternate D-Bus interface
1010
# name. Add it to the class.
1011
attr[attrname] = (dbus_service_property
1013
attribute._dbus_signature,
1014
attribute._dbus_access,
1016
._dbus_get_args_options
1019
(attribute.func_code,
1020
attribute.func_globals,
1021
attribute.func_name,
1022
attribute.func_defaults,
1023
attribute.func_closure)))
1024
return type.__new__(mcs, name, bases, attr)
1027
713
class ClientDBus(Client, DBusObjectWithProperties):
1028
714
"""A Client class using D-Bus
1053
737
DBusObjectWithProperties.__init__(self, self.bus,
1054
738
self.dbus_object_path)
1056
def notifychangeproperty(transform_func,
1057
dbus_name, type_func=lambda x: x,
1059
""" Modify a variable so that it's a property which announces
1060
its changes to DBus.
1062
transform_fun: Function that takes a value and a variant_level
1063
and transforms it to a D-Bus type.
1064
dbus_name: D-Bus name of the variable
1065
type_func: Function that transform the value before sending it
1066
to the D-Bus. Default: no transform
1067
variant_level: D-Bus variant level. Default: 1
1069
attrname = "_{0}".format(dbus_name)
1070
def setter(self, value):
1071
if hasattr(self, "dbus_object_path"):
1072
if (not hasattr(self, attrname) or
1073
type_func(getattr(self, attrname, None))
1074
!= type_func(value)):
1075
dbus_value = transform_func(type_func(value),
1078
self.PropertyChanged(dbus.String(dbus_name),
1080
setattr(self, attrname, value)
1082
return property(lambda self: getattr(self, attrname), setter)
1085
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1086
approvals_pending = notifychangeproperty(dbus.Boolean,
1089
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1090
last_enabled = notifychangeproperty(datetime_to_dbus,
1092
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1093
type_func = lambda checker:
1094
checker is not None)
1095
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1097
last_approval_request = notifychangeproperty(
1098
datetime_to_dbus, "LastApprovalRequest")
1099
approved_by_default = notifychangeproperty(dbus.Boolean,
1100
"ApprovedByDefault")
1101
approval_delay = notifychangeproperty(dbus.UInt64,
1104
timedelta_to_milliseconds)
1105
approval_duration = notifychangeproperty(
1106
dbus.UInt64, "ApprovalDuration",
1107
type_func = timedelta_to_milliseconds)
1108
host = notifychangeproperty(dbus.String, "Host")
1109
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1111
timedelta_to_milliseconds)
1112
extended_timeout = notifychangeproperty(
1113
dbus.UInt64, "ExtendedTimeout",
1114
type_func = timedelta_to_milliseconds)
1115
interval = notifychangeproperty(dbus.UInt64,
1118
timedelta_to_milliseconds)
1119
checker_command = notifychangeproperty(dbus.String, "Checker")
1121
del notifychangeproperty
740
def _get_approvals_pending(self):
741
return self._approvals_pending
742
def _set_approvals_pending(self, value):
743
old_value = self._approvals_pending
744
self._approvals_pending = value
746
if (hasattr(self, "dbus_object_path")
747
and bval is not bool(old_value)):
748
dbus_bool = dbus.Boolean(bval, variant_level=1)
749
self.PropertyChanged(dbus.String("ApprovalPending"),
752
approvals_pending = property(_get_approvals_pending,
753
_set_approvals_pending)
754
del _get_approvals_pending, _set_approvals_pending
757
def _datetime_to_dbus(dt, variant_level=0):
758
"""Convert a UTC datetime.datetime() to a D-Bus type."""
759
return dbus.String(dt.isoformat(),
760
variant_level=variant_level)
763
oldstate = getattr(self, "enabled", False)
764
r = Client.enable(self)
765
if oldstate != self.enabled:
767
self.PropertyChanged(dbus.String("Enabled"),
768
dbus.Boolean(True, variant_level=1))
769
self.PropertyChanged(
770
dbus.String("LastEnabled"),
771
self._datetime_to_dbus(self.last_enabled,
775
def disable(self, quiet = False):
776
oldstate = getattr(self, "enabled", False)
777
r = Client.disable(self, quiet=quiet)
778
if not quiet and oldstate != self.enabled:
780
self.PropertyChanged(dbus.String("Enabled"),
781
dbus.Boolean(False, variant_level=1))
1123
784
def __del__(self, *args, **kwargs):
1394
1088
if value is None: # get
1395
1089
return dbus.UInt64(self.interval_milliseconds())
1396
1090
self.interval = datetime.timedelta(0, 0, 0, value)
1092
self.PropertyChanged(dbus.String("Interval"),
1093
dbus.UInt64(value, variant_level=1))
1397
1094
if getattr(self, "checker_initiator_tag", None) is None:
1400
# Reschedule checker run
1401
gobject.source_remove(self.checker_initiator_tag)
1402
self.checker_initiator_tag = (gobject.timeout_add
1403
(value, self.start_checker))
1404
self.start_checker() # Start one now, too
1096
# Reschedule checker run
1097
gobject.source_remove(self.checker_initiator_tag)
1098
self.checker_initiator_tag = (gobject.timeout_add
1099
(value, self.start_checker))
1100
self.start_checker() # Start one now, too
1406
1102
# Checker - property
1407
1103
@dbus_service_property(_interface, signature="s",
1408
1104
access="readwrite")
1409
1105
def Checker_dbus_property(self, value=None):
1410
1106
if value is None: # get
1411
1107
return dbus.String(self.checker_command)
1412
self.checker_command = unicode(value)
1108
self.checker_command = value
1110
self.PropertyChanged(dbus.String("Checker"),
1111
dbus.String(self.checker_command,
1414
1114
# CheckerRunning - property
1415
1115
@dbus_service_property(_interface, signature="b",
1858
1537
fpr = request[1]
1859
1538
address = request[2]
1861
for c in self.clients.itervalues():
1540
for c in self.clients:
1862
1541
if c.fingerprint == fpr:
1866
logger.info("Client not found for fingerprint: %s, ad"
1867
"dress: %s", fpr, address)
1545
logger.warning("Client not found for fingerprint: %s, ad"
1546
"dress: %s", fpr, address)
1868
1547
if self.use_dbus:
1869
1548
# Emit D-Bus signal
1870
mandos_dbus_service.ClientNotFound(fpr,
1549
mandos_dbus_service.ClientNotFound(fpr, address[0])
1872
1550
parent_pipe.send(False)
1875
1553
gobject.io_add_watch(parent_pipe.fileno(),
1876
1554
gobject.IO_IN | gobject.IO_HUP,
1877
1555
functools.partial(self.handle_ipc,
1556
parent_pipe = parent_pipe,
1557
client_object = client))
1883
1558
parent_pipe.send(True)
1884
# remove the old hook in favor of the new above hook on
1559
# remove the old hook in favor of the new above hook on same fileno
1887
1561
if command == 'funcall':
1888
1562
funcname = request[1]
1889
1563
args = request[2]
1890
1564
kwargs = request[3]
1892
parent_pipe.send(('data', getattr(client_object,
1566
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
1896
1568
if command == 'getattr':
1897
1569
attrname = request[1]
1898
1570
if callable(client_object.__getattribute__(attrname)):
1899
1571
parent_pipe.send(('function',))
1901
parent_pipe.send(('data', client_object
1902
.__getattribute__(attrname)))
1573
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
1904
1575
if command == 'setattr':
1905
1576
attrname = request[1]
1906
1577
value = request[2]
1907
1578
setattr(client_object, attrname, value)
1942
1613
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1944
1615
raise ValueError("Unknown suffix %r" % suffix)
1945
except (ValueError, IndexError) as e:
1616
except (ValueError, IndexError), e:
1946
1617
raise ValueError(*(e.args))
1947
1618
timevalue += delta
1948
1619
return timevalue
1622
def if_nametoindex(interface):
1623
"""Call the C function if_nametoindex(), or equivalent
1625
Note: This function cannot accept a unicode string."""
1626
global if_nametoindex
1628
if_nametoindex = (ctypes.cdll.LoadLibrary
1629
(ctypes.util.find_library("c"))
1631
except (OSError, AttributeError):
1632
logger.warning("Doing if_nametoindex the hard way")
1633
def if_nametoindex(interface):
1634
"Get an interface index the hard way, i.e. using fcntl()"
1635
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1636
with contextlib.closing(socket.socket()) as s:
1637
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1638
struct.pack(str("16s16x"),
1640
interface_index = struct.unpack(str("I"),
1642
return interface_index
1643
return if_nametoindex(interface)
1951
1646
def daemon(nochdir = False, noclose = False):
1952
1647
"""See daemon(3). Standard BSD Unix function.
2198
1885
client_class = Client
2200
client_class = functools.partial(ClientDBusTransitional,
2203
client_settings = Client.config_parser(client_config)
2204
old_client_settings = {}
2207
# Get client data and settings from last running state.
2208
if server_settings["restore"]:
2210
with open(stored_state_path, "rb") as stored_state:
2211
clients_data, old_client_settings = (pickle.load
2213
os.remove(stored_state_path)
2214
except IOError as e:
2215
logger.warning("Could not load persistent state: {0}"
2217
if e.errno != errno.ENOENT:
2219
except EOFError as e:
2220
logger.warning("Could not load persistent state: "
2221
"EOFError: {0}".format(e))
2223
with PGPEngine() as pgp:
2224
for client_name, client in clients_data.iteritems():
2225
# Decide which value to use after restoring saved state.
2226
# We have three different values: Old config file,
2227
# new config file, and saved state.
2228
# New config value takes precedence if it differs from old
2229
# config value, otherwise use saved state.
2230
for name, value in client_settings[client_name].items():
2232
# For each value in new config, check if it
2233
# differs from the old config value (Except for
2234
# the "secret" attribute)
2235
if (name != "secret" and
2236
value != old_client_settings[client_name]
2238
client[name] = value
2242
# Clients who has passed its expire date can still be
2243
# enabled if its last checker was successful. Clients
2244
# whose checker failed before we stored its state is
2245
# assumed to have failed all checkers during downtime.
2246
if client["enabled"]:
2247
if datetime.datetime.utcnow() >= client["expires"]:
2248
if not client["last_checked_ok"]:
2250
"disabling client {0} - Client never "
2251
"performed a successfull checker"
2252
.format(client["name"]))
2253
client["enabled"] = False
2254
elif client["last_checker_status"] != 0:
2256
"disabling client {0} - Client "
2257
"last checker failed with error code {1}"
2258
.format(client["name"],
2259
client["last_checker_status"]))
2260
client["enabled"] = False
2262
client["expires"] = (datetime.datetime
2264
+ client["timeout"])
1887
client_class = functools.partial(ClientDBus, bus = bus)
1888
def client_config_items(config, section):
1889
special_settings = {
1890
"approved_by_default":
1891
lambda: config.getboolean(section,
1892
"approved_by_default"),
1894
for name, value in config.items(section):
2267
client["secret"] = (
2268
pgp.decrypt(client["encrypted_secret"],
2269
client_settings[client_name]
2272
# If decryption fails, we use secret from new settings
2273
logger.debug("Failed to decrypt {0} old secret"
2274
.format(client_name))
2275
client["secret"] = (
2276
client_settings[client_name]["secret"])
2279
# Add/remove clients based on new changes made to config
2280
for client_name in set(old_client_settings) - set(client_settings):
2281
del clients_data[client_name]
2282
for client_name in set(client_settings) - set(old_client_settings):
2283
clients_data[client_name] = client_settings[client_name]
2285
# Create clients all clients
2286
for client_name, client in clients_data.iteritems():
2287
tcp_server.clients[client_name] = client_class(
2288
name = client_name, settings = client)
1896
yield (name, special_settings[name]())
1900
tcp_server.clients.update(set(
1901
client_class(name = section,
1902
config= dict(client_config_items(
1903
client_config, section)))
1904
for section in client_config.sections()))
2290
1905
if not tcp_server.clients:
2291
1906
logger.warning("No clients defined")
2365
class MandosDBusServiceTransitional(MandosDBusService):
2366
__metaclass__ = AlternateDBusNamesMetaclass
2367
mandos_dbus_service = MandosDBusServiceTransitional()
1980
mandos_dbus_service = MandosDBusService()
2370
1983
"Cleanup function; run on exit"
2371
1984
service.cleanup()
2373
multiprocessing.active_children()
2374
if not (tcp_server.clients or client_settings):
2377
# Store client before exiting. Secrets are encrypted with key
2378
# based on what config file has. If config file is
2379
# removed/edited, old secret will thus be unrecovable.
2381
with PGPEngine() as pgp:
2382
for client in tcp_server.clients.itervalues():
2383
key = client_settings[client.name]["secret"]
2384
client.encrypted_secret = pgp.encrypt(client.secret,
2388
# A list of attributes that can not be pickled
2390
exclude = set(("bus", "changedstate", "secret",
2392
for name, typ in (inspect.getmembers
2393
(dbus.service.Object)):
2396
client_dict["encrypted_secret"] = (client
2398
for attr in client.client_structure:
2399
if attr not in exclude:
2400
client_dict[attr] = getattr(client, attr)
2402
clients[client.name] = client_dict
2403
del client_settings[client.name]["secret"]
2406
tempfd, tempname = tempfile.mkstemp(suffix=".pickle",
2409
(stored_state_path))
2410
with os.fdopen(tempfd, "wb") as stored_state:
2411
pickle.dump((clients, client_settings), stored_state)
2412
os.rename(tempname, stored_state_path)
2413
except (IOError, OSError) as e:
2414
logger.warning("Could not save persistent state: {0}"
2421
if e.errno not in set((errno.ENOENT, errno.EACCES,
2425
# Delete all clients, and settings from config
2426
1986
while tcp_server.clients:
2427
name, client = tcp_server.clients.popitem()
1987
client = tcp_server.clients.pop()
2429
1989
client.remove_from_connection()
1990
client.disable_hook = None
2430
1991
# Don't signal anything except ClientRemoved
2431
1992
client.disable(quiet=True)
2433
1994
# Emit D-Bus signal
2434
mandos_dbus_service.ClientRemoved(client
1995
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
2437
client_settings.clear()
2439
1998
atexit.register(cleanup)
2441
for client in tcp_server.clients.itervalues():
2000
for client in tcp_server.clients:
2443
2002
# Emit D-Bus signal
2444
2003
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2445
# Need to initiate checking of clients
2447
client.init_checker()
2449
2006
tcp_server.enable()
2450
2007
tcp_server.server_activate()