86
81
except ImportError:
87
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(debug, level=logging.WARNING):
115
"""init logger and add loglevel"""
117
syslogger.setFormatter(logging.Formatter
118
('Mandos [%(process)d]: %(levelname)s:'
120
logger.addHandler(syslogger)
123
console = logging.StreamHandler()
124
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
128
logger.addHandler(console)
129
logger.setLevel(level)
132
class PGPError(Exception):
133
"""Exception if encryption/decryption fails"""
137
class PGPEngine(object):
138
"""A simple class for OpenPGP symmetric encryption & decryption"""
140
self.gnupg = GnuPGInterface.GnuPG()
141
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
142
self.gnupg = GnuPGInterface.GnuPG()
143
self.gnupg.options.meta_interactive = False
144
self.gnupg.options.homedir = self.tempdir
145
self.gnupg.options.extra_args.extend(['--force-mdc',
152
def __exit__ (self, exc_type, exc_value, traceback):
160
if self.tempdir is not None:
161
# Delete contents of tempdir
162
for root, dirs, files in os.walk(self.tempdir,
164
for filename in files:
165
os.remove(os.path.join(root, filename))
167
os.rmdir(os.path.join(root, dirname))
169
os.rmdir(self.tempdir)
172
def password_encode(self, password):
173
# Passphrase can not be empty and can not contain newlines or
174
# NUL bytes. So we prefix it and hex encode it.
175
return b"mandos" + binascii.hexlify(password)
177
def encrypt(self, data, password):
178
self.gnupg.passphrase = self.password_encode(password)
179
with open(os.devnull, "w") as devnull:
181
proc = self.gnupg.run(['--symmetric'],
182
create_fhs=['stdin', 'stdout'],
183
attach_fhs={'stderr': devnull})
184
with contextlib.closing(proc.handles['stdin']) as f:
186
with contextlib.closing(proc.handles['stdout']) as f:
187
ciphertext = f.read()
191
self.gnupg.passphrase = None
194
def decrypt(self, data, password):
195
self.gnupg.passphrase = self.password_encode(password)
196
with open(os.devnull, "w") as devnull:
198
proc = self.gnupg.run(['--decrypt'],
199
create_fhs=['stdin', 'stdout'],
200
attach_fhs={'stderr': devnull})
201
with contextlib.closing(proc.handles['stdin']) as f:
203
with contextlib.closing(proc.handles['stdout']) as f:
204
decrypted_plaintext = f.read()
208
self.gnupg.passphrase = None
209
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)
212
103
class AvahiError(Exception):
213
104
def __init__(self, value, *args, **kwargs):
421
291
interval: datetime.timedelta(); How often to start a new checker
422
292
last_approval_request: datetime.datetime(); (UTC) or None
423
293
last_checked_ok: datetime.datetime(); (UTC) or None
424
last_checker_status: integer between 0 and 255 reflecting exit
425
status of last checker. -1 reflects crashed
426
checker, -2 means no checker completed yet.
427
last_enabled: datetime.datetime(); (UTC) or None
294
last_enabled: datetime.datetime(); (UTC)
428
295
name: string; from the config file, used in log messages and
429
296
D-Bus identifiers
430
297
secret: bytestring; sent verbatim (over TLS) to client
431
298
timeout: datetime.timedelta(); How long from last_checked_ok
432
299
until this client is disabled
433
extended_timeout: extra long timeout when secret has been sent
434
300
runtime_expansions: Allowed attributes for runtime expansion.
435
expires: datetime.datetime(); time (UTC) when a client will be
439
303
runtime_expansions = ("approval_delay", "approval_duration",
440
304
"created", "enabled", "fingerprint",
441
305
"host", "interval", "last_checked_ok",
442
306
"last_enabled", "name", "timeout")
443
client_defaults = { "timeout": "5m",
444
"extended_timeout": "15m",
446
"checker": "fping -q -- %%(host)s",
448
"approval_delay": "0s",
449
"approval_duration": "1s",
450
"approved_by_default": "True",
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))
454
315
def timeout_milliseconds(self):
455
316
"Return the 'timeout' attribute in milliseconds"
456
return timedelta_to_milliseconds(self.timeout)
458
def extended_timeout_milliseconds(self):
459
"Return the 'extended_timeout' attribute in milliseconds"
460
return timedelta_to_milliseconds(self.extended_timeout)
317
return self._timedelta_to_milliseconds(self.timeout)
462
319
def interval_milliseconds(self):
463
320
"Return the 'interval' attribute in milliseconds"
464
return timedelta_to_milliseconds(self.interval)
321
return self._timedelta_to_milliseconds(self.interval)
466
323
def approval_delay_milliseconds(self):
467
return timedelta_to_milliseconds(self.approval_delay)
470
def config_parser(config):
471
"""Construct a new dict of client settings of this form:
472
{ client_name: {setting_name: value, ...}, ...}
473
with exceptions for any special settings as defined above.
474
NOTE: Must be a pure function. Must return the same result
475
value given the same arguments.
478
for client_name in config.sections():
479
section = dict(config.items(client_name))
480
client = settings[client_name] = {}
482
client["host"] = section["host"]
483
# Reformat values from string types to Python types
484
client["approved_by_default"] = config.getboolean(
485
client_name, "approved_by_default")
486
client["enabled"] = config.getboolean(client_name,
489
client["fingerprint"] = (section["fingerprint"].upper()
491
if "secret" in section:
492
client["secret"] = section["secret"].decode("base64")
493
elif "secfile" in section:
494
with open(os.path.expanduser(os.path.expandvars
495
(section["secfile"])),
497
client["secret"] = secfile.read()
499
raise TypeError("No secret or secfile for section {0}"
501
client["timeout"] = string_to_delta(section["timeout"])
502
client["extended_timeout"] = string_to_delta(
503
section["extended_timeout"])
504
client["interval"] = string_to_delta(section["interval"])
505
client["approval_delay"] = string_to_delta(
506
section["approval_delay"])
507
client["approval_duration"] = string_to_delta(
508
section["approval_duration"])
509
client["checker_command"] = section["checker"]
510
client["last_approval_request"] = None
511
client["last_checked_ok"] = None
512
client["last_checker_status"] = -2
516
def __init__(self, settings, name = None):
324
return self._timedelta_to_milliseconds(self.approval_delay)
326
def __init__(self, name = None, disable_hook=None, config=None):
327
"""Note: the 'checker' key in 'config' sets the
328
'checker_command' attribute and *not* the 'checker'
518
# adding all client settings
519
for setting, value in settings.iteritems():
520
setattr(self, setting, value)
523
if not hasattr(self, "last_enabled"):
524
self.last_enabled = datetime.datetime.utcnow()
525
if not hasattr(self, "expires"):
526
self.expires = (datetime.datetime.utcnow()
529
self.last_enabled = None
532
333
logger.debug("Creating client %r", self.name)
533
334
# Uppercase and remove spaces from fingerprint for later
534
335
# comparison purposes with return value from the fingerprint()
337
self.fingerprint = (config["fingerprint"].upper()
536
339
logger.debug(" Fingerprint: %s", self.fingerprint)
537
self.created = settings.get("created",
538
datetime.datetime.utcnow())
540
# attributes specific for this server instance
340
if "secret" in config:
341
self.secret = config["secret"].decode("base64")
342
elif "secfile" in config:
343
with open(os.path.expanduser(os.path.expandvars
344
(config["secfile"])),
346
self.secret = secfile.read()
348
raise TypeError("No secret or secfile for client %s"
350
self.host = config.get("host", "")
351
self.created = datetime.datetime.utcnow()
353
self.last_approval_request = None
354
self.last_enabled = None
355
self.last_checked_ok = None
356
self.timeout = string_to_delta(config["timeout"])
357
self.interval = string_to_delta(config["interval"])
358
self.disable_hook = disable_hook
541
359
self.checker = None
542
360
self.checker_initiator_tag = None
543
361
self.disable_initiator_tag = None
544
362
self.checker_callback_tag = None
363
self.checker_command = config["checker"]
545
364
self.current_checker_command = None
365
self.last_connect = None
366
self._approved = None
367
self.approved_by_default = config.get("approved_by_default",
547
369
self.approvals_pending = 0
548
self.changedstate = (multiprocessing_manager
549
.Condition(multiprocessing_manager
551
self.client_structure = [attr for attr in
552
self.__dict__.iterkeys()
553
if not attr.startswith("_")]
554
self.client_structure.append("client_structure")
556
for name, t in inspect.getmembers(type(self),
560
if not name.startswith("_"):
561
self.client_structure.append(name)
370
self.approval_delay = string_to_delta(
371
config["approval_delay"])
372
self.approval_duration = string_to_delta(
373
config["approval_duration"])
374
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
563
# Send notice to process children that client state has changed
564
376
def send_changedstate(self):
565
with self.changedstate:
566
self.changedstate.notify_all()
377
self.changedstate.acquire()
378
self.changedstate.notify_all()
379
self.changedstate.release()
568
381
def enable(self):
569
382
"""Start this client's checker and timeout hooks"""
570
383
if getattr(self, "enabled", False):
571
384
# Already enabled
573
386
self.send_changedstate()
574
self.expires = datetime.datetime.utcnow() + self.timeout
576
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*.
579
401
def disable(self, quiet=True):
580
402
"""Disable this client."""
834
600
class DBusObjectWithProperties(dbus.service.Object):
835
601
"""A D-Bus object with properties.
837
603
Classes inheriting from this can use the dbus_service_property
838
604
decorator to expose methods as D-Bus properties. It exposes the
839
605
standard Get(), Set(), and GetAll() methods on the D-Bus.
843
def _is_dbus_thing(thing):
844
"""Returns a function testing if an attribute is a D-Bus thing
846
If called like _is_dbus_thing("method") it returns a function
847
suitable for use as predicate to inspect.getmembers().
849
return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),
609
def _is_dbus_property(obj):
610
return getattr(obj, "_dbus_is_property", False)
852
def _get_all_dbus_things(self, thing):
612
def _get_all_dbus_properties(self):
853
613
"""Returns a generator of (name, attribute) pairs
855
return ((getattr(athing.__get__(self), "_dbus_name",
857
athing.__get__(self))
858
for cls in self.__class__.__mro__
860
inspect.getmembers(cls,
861
self._is_dbus_thing(thing)))
615
return ((prop._dbus_name, prop)
617
inspect.getmembers(self, self._is_dbus_property))
863
619
def _get_dbus_property(self, interface_name, property_name):
864
620
"""Returns a bound method if one exists which is a D-Bus
865
621
property with the specified name and interface.
867
for cls in self.__class__.__mro__:
868
for name, value in (inspect.getmembers
870
self._is_dbus_thing("property"))):
871
if (value._dbus_name == property_name
872
and value._dbus_interface == interface_name):
873
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)):
875
633
# No such property
876
634
raise DBusPropertyNotFound(self.dbus_object_path + ":"
877
635
+ interface_name + "."
951
707
e.setAttribute("access", prop._dbus_access)
953
709
for if_tag in document.getElementsByTagName("interface"):
955
710
for tag in (make_tag(document, name, prop)
957
in self._get_all_dbus_things("property")
712
in self._get_all_dbus_properties()
958
713
if prop._dbus_interface
959
714
== if_tag.getAttribute("name")):
960
715
if_tag.appendChild(tag)
961
# Add annotation tags
962
for typ in ("method", "signal", "property"):
963
for tag in if_tag.getElementsByTagName(typ):
965
for name, prop in (self.
966
_get_all_dbus_things(typ)):
967
if (name == tag.getAttribute("name")
968
and prop._dbus_interface
969
== if_tag.getAttribute("name")):
970
annots.update(getattr
974
for name, value in annots.iteritems():
975
ann_tag = document.createElement(
977
ann_tag.setAttribute("name", name)
978
ann_tag.setAttribute("value", value)
979
tag.appendChild(ann_tag)
980
# Add interface annotation tags
981
for annotation, value in dict(
983
*(annotations().iteritems()
984
for name, annotations in
985
self._get_all_dbus_things("interface")
986
if name == if_tag.getAttribute("name")
988
ann_tag = document.createElement("annotation")
989
ann_tag.setAttribute("name", annotation)
990
ann_tag.setAttribute("value", value)
991
if_tag.appendChild(ann_tag)
992
716
# Add the names to the return values for the
993
717
# "org.freedesktop.DBus.Properties" methods
994
718
if (if_tag.getAttribute("name")
1009
733
except (AttributeError, xml.dom.DOMException,
1010
734
xml.parsers.expat.ExpatError) as error:
1011
735
logger.error("Failed to override Introspection method",
1013
737
return xmlstring
1016
def datetime_to_dbus (dt, variant_level=0):
1017
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1019
return dbus.String("", variant_level = variant_level)
1020
return dbus.String(dt.isoformat(),
1021
variant_level=variant_level)
1024
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1025
"""A class decorator; applied to a subclass of
1026
dbus.service.Object, it will add alternate D-Bus attributes with
1027
interface names according to the "alt_interface_names" mapping.
1030
@alternate_dbus_names({"org.example.Interface":
1031
"net.example.AlternateInterface"})
1032
class SampleDBusObject(dbus.service.Object):
1033
@dbus.service.method("org.example.Interface")
1034
def SampleDBusMethod():
1037
The above "SampleDBusMethod" on "SampleDBusObject" will be
1038
reachable via two interfaces: "org.example.Interface" and
1039
"net.example.AlternateInterface", the latter of which will have
1040
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1041
"true", unless "deprecate" is passed with a False value.
1043
This works for methods and signals, and also for D-Bus properties
1044
(from DBusObjectWithProperties) and interfaces (from the
1045
dbus_interface_annotations decorator).
1048
for orig_interface_name, alt_interface_name in (
1049
alt_interface_names.iteritems()):
1051
interface_names = set()
1052
# Go though all attributes of the class
1053
for attrname, attribute in inspect.getmembers(cls):
1054
# Ignore non-D-Bus attributes, and D-Bus attributes
1055
# with the wrong interface name
1056
if (not hasattr(attribute, "_dbus_interface")
1057
or not attribute._dbus_interface
1058
.startswith(orig_interface_name)):
1060
# Create an alternate D-Bus interface name based on
1062
alt_interface = (attribute._dbus_interface
1063
.replace(orig_interface_name,
1064
alt_interface_name))
1065
interface_names.add(alt_interface)
1066
# Is this a D-Bus signal?
1067
if getattr(attribute, "_dbus_is_signal", False):
1068
# Extract the original non-method function by
1070
nonmethod_func = (dict(
1071
zip(attribute.func_code.co_freevars,
1072
attribute.__closure__))["func"]
1074
# Create a new, but exactly alike, function
1075
# object, and decorate it to be a new D-Bus signal
1076
# with the alternate D-Bus interface name
1077
new_function = (dbus.service.signal
1079
attribute._dbus_signature)
1080
(types.FunctionType(
1081
nonmethod_func.func_code,
1082
nonmethod_func.func_globals,
1083
nonmethod_func.func_name,
1084
nonmethod_func.func_defaults,
1085
nonmethod_func.func_closure)))
1086
# Copy annotations, if any
1088
new_function._dbus_annotations = (
1089
dict(attribute._dbus_annotations))
1090
except AttributeError:
1092
# Define a creator of a function to call both the
1093
# original and alternate functions, so both the
1094
# original and alternate signals gets sent when
1095
# the function is called
1096
def fixscope(func1, func2):
1097
"""This function is a scope container to pass
1098
func1 and func2 to the "call_both" function
1099
outside of its arguments"""
1100
def call_both(*args, **kwargs):
1101
"""This function will emit two D-Bus
1102
signals by calling func1 and func2"""
1103
func1(*args, **kwargs)
1104
func2(*args, **kwargs)
1106
# Create the "call_both" function and add it to
1108
attr[attrname] = fixscope(attribute, new_function)
1109
# Is this a D-Bus method?
1110
elif getattr(attribute, "_dbus_is_method", False):
1111
# Create a new, but exactly alike, function
1112
# object. Decorate it to be a new D-Bus method
1113
# with the alternate D-Bus interface name. Add it
1115
attr[attrname] = (dbus.service.method
1117
attribute._dbus_in_signature,
1118
attribute._dbus_out_signature)
1120
(attribute.func_code,
1121
attribute.func_globals,
1122
attribute.func_name,
1123
attribute.func_defaults,
1124
attribute.func_closure)))
1125
# Copy annotations, if any
1127
attr[attrname]._dbus_annotations = (
1128
dict(attribute._dbus_annotations))
1129
except AttributeError:
1131
# Is this a D-Bus property?
1132
elif getattr(attribute, "_dbus_is_property", False):
1133
# Create a new, but exactly alike, function
1134
# object, and decorate it to be a new D-Bus
1135
# property with the alternate D-Bus interface
1136
# name. Add it to the class.
1137
attr[attrname] = (dbus_service_property
1139
attribute._dbus_signature,
1140
attribute._dbus_access,
1142
._dbus_get_args_options
1145
(attribute.func_code,
1146
attribute.func_globals,
1147
attribute.func_name,
1148
attribute.func_defaults,
1149
attribute.func_closure)))
1150
# Copy annotations, if any
1152
attr[attrname]._dbus_annotations = (
1153
dict(attribute._dbus_annotations))
1154
except AttributeError:
1156
# Is this a D-Bus interface?
1157
elif getattr(attribute, "_dbus_is_interface", False):
1158
# Create a new, but exactly alike, function
1159
# object. Decorate it to be a new D-Bus interface
1160
# with the alternate D-Bus interface name. Add it
1162
attr[attrname] = (dbus_interface_annotations
1165
(attribute.func_code,
1166
attribute.func_globals,
1167
attribute.func_name,
1168
attribute.func_defaults,
1169
attribute.func_closure)))
1171
# Deprecate all alternate interfaces
1172
iname="_AlternateDBusNames_interface_annotation{0}"
1173
for interface_name in interface_names:
1174
@dbus_interface_annotations(interface_name)
1176
return { "org.freedesktop.DBus.Deprecated":
1178
# Find an unused name
1179
for aname in (iname.format(i)
1180
for i in itertools.count()):
1181
if aname not in attr:
1185
# Replace the class with a new subclass of it with
1186
# methods, signals, etc. as created above.
1187
cls = type(b"{0}Alternate".format(cls.__name__),
1193
@alternate_dbus_interfaces({"se.recompile.Mandos":
1194
"se.bsnet.fukt.Mandos"})
1195
740
class ClientDBus(Client, DBusObjectWithProperties):
1196
741
"""A Client class using D-Bus
1217
763
("/clients/" + client_object_name))
1218
764
DBusObjectWithProperties.__init__(self, self.bus,
1219
765
self.dbus_object_path)
1221
def notifychangeproperty(transform_func,
1222
dbus_name, type_func=lambda x: x,
1224
""" Modify a variable so that it's a property which announces
1225
its changes to DBus.
1227
transform_fun: Function that takes a value and a variant_level
1228
and transforms it to a D-Bus type.
1229
dbus_name: D-Bus name of the variable
1230
type_func: Function that transform the value before sending it
1231
to the D-Bus. Default: no transform
1232
variant_level: D-Bus variant level. Default: 1
1234
attrname = "_{0}".format(dbus_name)
1235
def setter(self, value):
1236
if hasattr(self, "dbus_object_path"):
1237
if (not hasattr(self, attrname) or
1238
type_func(getattr(self, attrname, None))
1239
!= type_func(value)):
1240
dbus_value = transform_func(type_func(value),
1243
self.PropertyChanged(dbus.String(dbus_name),
1245
setattr(self, attrname, value)
1247
return property(lambda self: getattr(self, attrname), setter)
1249
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1250
approvals_pending = notifychangeproperty(dbus.Boolean,
1253
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1254
last_enabled = notifychangeproperty(datetime_to_dbus,
1256
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1257
type_func = lambda checker:
1258
checker is not None)
1259
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1261
last_checker_status = notifychangeproperty(dbus.Int16,
1262
"LastCheckerStatus")
1263
last_approval_request = notifychangeproperty(
1264
datetime_to_dbus, "LastApprovalRequest")
1265
approved_by_default = notifychangeproperty(dbus.Boolean,
1266
"ApprovedByDefault")
1267
approval_delay = notifychangeproperty(dbus.UInt64,
1270
timedelta_to_milliseconds)
1271
approval_duration = notifychangeproperty(
1272
dbus.UInt64, "ApprovalDuration",
1273
type_func = timedelta_to_milliseconds)
1274
host = notifychangeproperty(dbus.String, "Host")
1275
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1277
timedelta_to_milliseconds)
1278
extended_timeout = notifychangeproperty(
1279
dbus.UInt64, "ExtendedTimeout",
1280
type_func = timedelta_to_milliseconds)
1281
interval = notifychangeproperty(dbus.UInt64,
1284
timedelta_to_milliseconds)
1285
checker_command = notifychangeproperty(dbus.String, "Checker")
1287
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))
1289
811
def __del__(self, *args, **kwargs):
1528
1086
if value is None: # get
1529
1087
return dbus.UInt64(self.timeout_milliseconds())
1530
1088
self.timeout = datetime.timedelta(0, 0, 0, value)
1090
self.PropertyChanged(dbus.String("Timeout"),
1091
dbus.UInt64(value, variant_level=1))
1092
if getattr(self, "disable_initiator_tag", None) is None:
1531
1094
# Reschedule timeout
1533
now = datetime.datetime.utcnow()
1534
time_to_die = timedelta_to_milliseconds(
1535
(self.last_checked_ok + self.timeout) - now)
1536
if time_to_die <= 0:
1537
# The timeout has passed
1540
self.expires = (now +
1541
datetime.timedelta(milliseconds =
1543
if (getattr(self, "disable_initiator_tag", None)
1546
gobject.source_remove(self.disable_initiator_tag)
1547
self.disable_initiator_tag = (gobject.timeout_add
1551
# ExtendedTimeout - property
1552
@dbus_service_property(_interface, signature="t",
1554
def ExtendedTimeout_dbus_property(self, value=None):
1555
if value is None: # get
1556
return dbus.UInt64(self.extended_timeout_milliseconds())
1557
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1095
gobject.source_remove(self.disable_initiator_tag)
1096
self.disable_initiator_tag = None
1097
time_to_die = (self.
1098
_timedelta_to_milliseconds((self
1103
if time_to_die <= 0:
1104
# The timeout has passed
1107
self.disable_initiator_tag = (gobject.timeout_add
1108
(time_to_die, self.disable))
1559
1110
# Interval - property
1560
1111
@dbus_service_property(_interface, signature="t",
1563
1114
if value is None: # get
1564
1115
return dbus.UInt64(self.interval_milliseconds())
1565
1116
self.interval = datetime.timedelta(0, 0, 0, value)
1118
self.PropertyChanged(dbus.String("Interval"),
1119
dbus.UInt64(value, variant_level=1))
1566
1120
if getattr(self, "checker_initiator_tag", None) is None:
1569
# Reschedule checker run
1570
gobject.source_remove(self.checker_initiator_tag)
1571
self.checker_initiator_tag = (gobject.timeout_add
1572
(value, self.start_checker))
1573
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
1575
1128
# Checker - property
1576
1129
@dbus_service_property(_interface, signature="s",
1577
1130
access="readwrite")
1578
1131
def Checker_dbus_property(self, value=None):
1579
1132
if value is None: # get
1580
1133
return dbus.String(self.checker_command)
1581
self.checker_command = unicode(value)
1134
self.checker_command = value
1136
self.PropertyChanged(dbus.String("Checker"),
1137
dbus.String(self.checker_command,
1583
1140
# CheckerRunning - property
1584
1141
@dbus_service_property(_interface, signature="b",
2316
1870
.gnutls_global_set_log_function(debug_gnutls))
2318
1872
# Redirect stdin so all checkers get /dev/null
2319
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1873
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2320
1874
os.dup2(null, sys.stdin.fileno())
1878
# No console logging
1879
logger.removeHandler(console)
2324
1881
# Need to fork before connecting to D-Bus
2326
1883
# Close all input and output, do double fork, etc.
2329
gobject.threads_init()
2331
1886
global main_loop
2332
1887
# From the Avahi example code
2333
DBusGMainLoop(set_as_default=True)
1888
DBusGMainLoop(set_as_default=True )
2334
1889
main_loop = gobject.MainLoop()
2335
1890
bus = dbus.SystemBus()
2336
1891
# End of Avahi example code
2339
bus_name = dbus.service.BusName("se.recompile.Mandos",
1894
bus_name = dbus.service.BusName("se.bsnet.fukt.Mandos",
2340
1895
bus, do_not_queue=True)
2341
old_bus_name = (dbus.service.BusName
2342
("se.bsnet.fukt.Mandos", bus,
2344
1896
except dbus.exceptions.NameExistsException as e:
2345
logger.error("Disabling D-Bus:", exc_info=e)
1897
logger.error(unicode(e) + ", disabling D-Bus")
2346
1898
use_dbus = False
2347
1899
server_settings["use_dbus"] = False
2348
1900
tcp_server.use_dbus = False
2349
1901
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2350
service = AvahiServiceToSyslog(name =
2351
server_settings["servicename"],
2352
servicetype = "_mandos._tcp",
2353
protocol = protocol, bus = bus)
1902
service = AvahiService(name = server_settings["servicename"],
1903
servicetype = "_mandos._tcp",
1904
protocol = protocol, bus = bus)
2354
1905
if server_settings["interface"]:
2355
1906
service.interface = (if_nametoindex
2356
1907
(str(server_settings["interface"])))
2361
1912
client_class = Client
2363
1914
client_class = functools.partial(ClientDBus, bus = bus)
2365
client_settings = Client.config_parser(client_config)
2366
old_client_settings = {}
2369
# Get client data and settings from last running state.
2370
if server_settings["restore"]:
2372
with open(stored_state_path, "rb") as stored_state:
2373
clients_data, old_client_settings = (pickle.load
2375
os.remove(stored_state_path)
2376
except IOError as e:
2377
if e.errno == errno.ENOENT:
2378
logger.warning("Could not load persistent state: {0}"
2379
.format(os.strerror(e.errno)))
2381
logger.critical("Could not load persistent state:",
2384
except EOFError as e:
2385
logger.warning("Could not load persistent state: "
2386
"EOFError:", exc_info=e)
2388
with PGPEngine() as pgp:
2389
for client_name, client in clients_data.iteritems():
2390
# Decide which value to use after restoring saved state.
2391
# We have three different values: Old config file,
2392
# new config file, and saved state.
2393
# New config value takes precedence if it differs from old
2394
# config value, otherwise use saved state.
2395
for name, value in client_settings[client_name].items():
2397
# For each value in new config, check if it
2398
# differs from the old config value (Except for
2399
# the "secret" attribute)
2400
if (name != "secret" and
2401
value != old_client_settings[client_name]
2403
client[name] = value
2407
# Clients who has passed its expire date can still be
2408
# enabled if its last checker was successful. Clients
2409
# whose checker succeeded before we stored its state is
2410
# assumed to have successfully run all checkers during
2412
if client["enabled"]:
2413
if datetime.datetime.utcnow() >= client["expires"]:
2414
if not client["last_checked_ok"]:
2416
"disabling client {0} - Client never "
2417
"performed a successful checker"
2418
.format(client_name))
2419
client["enabled"] = False
2420
elif client["last_checker_status"] != 0:
2422
"disabling client {0} - Client "
2423
"last checker failed with error code {1}"
2424
.format(client_name,
2425
client["last_checker_status"]))
2426
client["enabled"] = False
2428
client["expires"] = (datetime.datetime
2430
+ client["timeout"])
2431
logger.debug("Last checker succeeded,"
2432
" keeping {0} enabled"
2433
.format(client_name))
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):
2435
client["secret"] = (
2436
pgp.decrypt(client["encrypted_secret"],
2437
client_settings[client_name]
2440
# If decryption fails, we use secret from new settings
2441
logger.debug("Failed to decrypt {0} old secret"
2442
.format(client_name))
2443
client["secret"] = (
2444
client_settings[client_name]["secret"])
2446
# Add/remove clients based on new changes made to config
2447
for client_name in (set(old_client_settings)
2448
- set(client_settings)):
2449
del clients_data[client_name]
2450
for client_name in (set(client_settings)
2451
- set(old_client_settings)):
2452
clients_data[client_name] = client_settings[client_name]
2454
# Create all client objects
2455
for client_name, client in clients_data.iteritems():
2456
tcp_server.clients[client_name] = client_class(
2457
name = client_name, settings = client)
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()))
2459
1932
if not tcp_server.clients:
2460
1933
logger.warning("No clients defined")
2545
2010
"Cleanup function; run on exit"
2546
2011
service.cleanup()
2548
multiprocessing.active_children()
2549
if not (tcp_server.clients or client_settings):
2552
# Store client before exiting. Secrets are encrypted with key
2553
# based on what config file has. If config file is
2554
# removed/edited, old secret will thus be unrecovable.
2556
with PGPEngine() as pgp:
2557
for client in tcp_server.clients.itervalues():
2558
key = client_settings[client.name]["secret"]
2559
client.encrypted_secret = pgp.encrypt(client.secret,
2563
# A list of attributes that can not be pickled
2565
exclude = set(("bus", "changedstate", "secret",
2567
for name, typ in (inspect.getmembers
2568
(dbus.service.Object)):
2571
client_dict["encrypted_secret"] = (client
2573
for attr in client.client_structure:
2574
if attr not in exclude:
2575
client_dict[attr] = getattr(client, attr)
2577
clients[client.name] = client_dict
2578
del client_settings[client.name]["secret"]
2581
tempfd, tempname = tempfile.mkstemp(suffix=".pickle",
2584
(stored_state_path))
2585
with os.fdopen(tempfd, "wb") as stored_state:
2586
pickle.dump((clients, client_settings), stored_state)
2587
os.rename(tempname, stored_state_path)
2588
except (IOError, OSError) as e:
2594
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
2595
logger.warning("Could not save persistent state: {0}"
2596
.format(os.strerror(e.errno)))
2598
logger.warning("Could not save persistent state:",
2602
# Delete all clients, and settings from config
2603
2013
while tcp_server.clients:
2604
name, client = tcp_server.clients.popitem()
2014
client = tcp_server.clients.pop()
2606
2016
client.remove_from_connection()
2017
client.disable_hook = None
2607
2018
# Don't signal anything except ClientRemoved
2608
2019
client.disable(quiet=True)
2610
2021
# Emit D-Bus signal
2611
mandos_dbus_service.ClientRemoved(client
2022
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
2614
client_settings.clear()
2616
2025
atexit.register(cleanup)
2618
for client in tcp_server.clients.itervalues():
2027
for client in tcp_server.clients:
2620
2029
# Emit D-Bus signal
2621
2030
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2622
# Need to initiate checking of clients
2624
client.init_checker()
2626
2033
tcp_server.enable()
2627
2034
tcp_server.server_activate()