82
86
except ImportError:
83
87
SO_BINDTODEVICE = None
88
#logger = logging.getLogger('mandos')
89
logger = logging.Logger('mandos')
90
stored_state_file = "clients.pickle"
92
logger = logging.getLogger()
90
93
syslogger = (logging.handlers.SysLogHandler
91
94
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
92
95
address = str("/dev/log")))
93
syslogger.setFormatter(logging.Formatter
94
('Mandos [%(process)d]: %(levelname)s:'
96
logger.addHandler(syslogger)
98
console = logging.StreamHandler()
99
console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'
102
logger.addHandler(console)
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
104
213
class AvahiError(Exception):
105
214
def __init__(self, value, *args, **kwargs):
314
433
"created", "enabled", "fingerprint",
315
434
"host", "interval", "last_checked_ok",
316
435
"last_enabled", "name", "timeout")
436
client_defaults = { "timeout": "5m",
437
"extended_timeout": "15m",
439
"checker": "fping -q -- %%(host)s",
441
"approval_delay": "0s",
442
"approval_duration": "1s",
443
"approved_by_default": "True",
318
447
def timeout_milliseconds(self):
319
448
"Return the 'timeout' attribute in milliseconds"
320
return _timedelta_to_milliseconds(self.timeout)
449
return timedelta_to_milliseconds(self.timeout)
322
451
def extended_timeout_milliseconds(self):
323
452
"Return the 'extended_timeout' attribute in milliseconds"
324
return _timedelta_to_milliseconds(self.extended_timeout)
453
return timedelta_to_milliseconds(self.extended_timeout)
326
455
def interval_milliseconds(self):
327
456
"Return the 'interval' attribute in milliseconds"
328
return _timedelta_to_milliseconds(self.interval)
457
return timedelta_to_milliseconds(self.interval)
330
459
def approval_delay_milliseconds(self):
331
return _timedelta_to_milliseconds(self.approval_delay)
333
def __init__(self, name = None, disable_hook=None, config=None):
460
return timedelta_to_milliseconds(self.approval_delay)
463
def config_parser(config):
464
"""Construct a new dict of client settings of this form:
465
{ client_name: {setting_name: value, ...}, ...}
466
with exceptions for any special settings as defined above.
467
NOTE: Must be a pure function. Must return the same result
468
value given the same arguments.
471
for client_name in config.sections():
472
section = dict(config.items(client_name))
473
client = settings[client_name] = {}
475
client["host"] = section["host"]
476
# Reformat values from string types to Python types
477
client["approved_by_default"] = config.getboolean(
478
client_name, "approved_by_default")
479
client["enabled"] = config.getboolean(client_name,
482
client["fingerprint"] = (section["fingerprint"].upper()
484
if "secret" in section:
485
client["secret"] = section["secret"].decode("base64")
486
elif "secfile" in section:
487
with open(os.path.expanduser(os.path.expandvars
488
(section["secfile"])),
490
client["secret"] = secfile.read()
492
raise TypeError("No secret or secfile for section {0}"
494
client["timeout"] = string_to_delta(section["timeout"])
495
client["extended_timeout"] = string_to_delta(
496
section["extended_timeout"])
497
client["interval"] = string_to_delta(section["interval"])
498
client["approval_delay"] = string_to_delta(
499
section["approval_delay"])
500
client["approval_duration"] = string_to_delta(
501
section["approval_duration"])
502
client["checker_command"] = section["checker"]
503
client["last_approval_request"] = None
504
client["last_checked_ok"] = None
505
client["last_checker_status"] = -2
510
def __init__(self, settings, name = None):
334
511
"""Note: the 'checker' key in 'config' sets the
335
512
'checker_command' attribute and *not* the 'checker'
515
# adding all client settings
516
for setting, value in settings.iteritems():
517
setattr(self, setting, value)
520
if not hasattr(self, "last_enabled"):
521
self.last_enabled = datetime.datetime.utcnow()
522
if not hasattr(self, "expires"):
523
self.expires = (datetime.datetime.utcnow()
526
self.last_enabled = None
340
529
logger.debug("Creating client %r", self.name)
341
530
# Uppercase and remove spaces from fingerprint for later
342
531
# comparison purposes with return value from the fingerprint()
344
self.fingerprint = (config["fingerprint"].upper()
346
533
logger.debug(" Fingerprint: %s", self.fingerprint)
347
if "secret" in config:
348
self.secret = config["secret"].decode("base64")
349
elif "secfile" in config:
350
with open(os.path.expanduser(os.path.expandvars
351
(config["secfile"])),
353
self.secret = secfile.read()
355
raise TypeError("No secret or secfile for client %s"
357
self.host = config.get("host", "")
358
self.created = datetime.datetime.utcnow()
360
self.last_approval_request = None
361
self.last_enabled = None
362
self.last_checked_ok = None
363
self.timeout = string_to_delta(config["timeout"])
364
self.extended_timeout = string_to_delta(config["extended_timeout"])
365
self.interval = string_to_delta(config["interval"])
366
self.disable_hook = disable_hook
534
self.created = settings.get("created",
535
datetime.datetime.utcnow())
537
# attributes specific for this server instance
367
538
self.checker = None
368
539
self.checker_initiator_tag = None
369
540
self.disable_initiator_tag = None
371
541
self.checker_callback_tag = None
372
self.checker_command = config["checker"]
373
542
self.current_checker_command = None
374
self.last_connect = None
375
self._approved = None
376
self.approved_by_default = config.get("approved_by_default",
378
544
self.approvals_pending = 0
379
self.approval_delay = string_to_delta(
380
config["approval_delay"])
381
self.approval_duration = string_to_delta(
382
config["approval_duration"])
383
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
545
self.changedstate = (multiprocessing_manager
546
.Condition(multiprocessing_manager
548
self.client_structure = [attr for attr in
549
self.__dict__.iterkeys()
550
if not attr.startswith("_")]
551
self.client_structure.append("client_structure")
553
for name, t in inspect.getmembers(type(self),
557
if not name.startswith("_"):
558
self.client_structure.append(name)
560
# Send notice to process children that client state has changed
385
561
def send_changedstate(self):
386
self.changedstate.acquire()
387
self.changedstate.notify_all()
388
self.changedstate.release()
562
with self.changedstate:
563
self.changedstate.notify_all()
390
565
def enable(self):
391
566
"""Start this client's checker and timeout hooks"""
392
567
if getattr(self, "enabled", False):
393
568
# Already enabled
395
570
self.send_changedstate()
396
# Schedule a new checker to be started an 'interval' from now,
397
# and every interval from then on.
398
self.checker_initiator_tag = (gobject.timeout_add
399
(self.interval_milliseconds(),
401
# Schedule a disable() when 'timeout' has passed
402
571
self.expires = datetime.datetime.utcnow() + self.timeout
403
self.disable_initiator_tag = (gobject.timeout_add
404
(self.timeout_milliseconds(),
406
572
self.enabled = True
407
573
self.last_enabled = datetime.datetime.utcnow()
408
# Also start a new checker *right now*.
411
576
def disable(self, quiet=True):
412
577
"""Disable this client."""
448
623
logger.info("Checker for %(name)s failed",
626
self.last_checker_status = -1
451
627
logger.warning("Checker for %(name)s crashed?",
454
def checked_ok(self, timeout=None):
455
"""Bump up the timeout for this client.
457
This should only be called when the client has been seen,
630
def checked_ok(self):
631
"""Assert that the client has been seen, alive and well."""
632
self.last_checked_ok = datetime.datetime.utcnow()
633
self.last_checker_status = 0
636
def bump_timeout(self, timeout=None):
637
"""Bump up the timeout for this client."""
460
638
if timeout is None:
461
639
timeout = self.timeout
462
self.last_checked_ok = datetime.datetime.utcnow()
463
gobject.source_remove(self.disable_initiator_tag)
464
self.expires = datetime.datetime.utcnow() + timeout
465
self.disable_initiator_tag = (gobject.timeout_add
466
(_timedelta_to_milliseconds(timeout),
640
if self.disable_initiator_tag is not None:
641
gobject.source_remove(self.disable_initiator_tag)
642
if getattr(self, "enabled", False):
643
self.disable_initiator_tag = (gobject.timeout_add
644
(timedelta_to_milliseconds
645
(timeout), self.disable))
646
self.expires = datetime.datetime.utcnow() + timeout
469
648
def need_approval(self):
470
649
self.last_approval_request = datetime.datetime.utcnow()
624
def _is_dbus_property(obj):
625
return getattr(obj, "_dbus_is_property", False)
840
def _is_dbus_thing(thing):
841
"""Returns a function testing if an attribute is a D-Bus thing
843
If called like _is_dbus_thing("method") it returns a function
844
suitable for use as predicate to inspect.getmembers().
846
return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),
627
def _get_all_dbus_properties(self):
849
def _get_all_dbus_things(self, thing):
628
850
"""Returns a generator of (name, attribute) pairs
630
return ((prop._dbus_name, prop)
632
inspect.getmembers(self, self._is_dbus_property))
852
return ((getattr(athing.__get__(self), "_dbus_name",
854
athing.__get__(self))
855
for cls in self.__class__.__mro__
857
inspect.getmembers(cls,
858
self._is_dbus_thing(thing)))
634
# def _get_dbus_property(self, interface_name, property_name):
635
# """Returns a bound method if one exists which is a D-Bus
636
# property with the specified name and interface.
638
# print("get_property({0!r}, {1!r}".format(interface_name, property_name),file=sys.stderr)
639
# print(dir(self), sys.stderr)
640
# for name in (property_name,
641
# property_name + "_dbus_property"):
642
# prop = getattr(self, name, None)
644
# or not self._is_dbus_property(prop)
645
# or prop._dbus_name != property_name
646
# or (interface_name and prop._dbus_interface
647
# and interface_name != prop._dbus_interface)):
651
# raise DBusPropertyNotFound(self.dbus_object_path + ":"
652
# + interface_name + "."
655
860
def _get_dbus_property(self, interface_name, property_name):
656
861
"""Returns a bound method if one exists which is a D-Bus
657
862
property with the specified name and interface.
659
for name, value in inspect.getmembers(self, self._is_dbus_property):
660
if value._dbus_name == property_name and value._dbus_interface == interface_name:
864
for cls in self.__class__.__mro__:
865
for name, value in (inspect.getmembers
867
self._is_dbus_thing("property"))):
868
if (value._dbus_name == property_name
869
and value._dbus_interface == interface_name):
870
return value.__get__(self)
663
872
# No such property
664
873
raise DBusPropertyNotFound(self.dbus_object_path + ":"
665
874
+ interface_name + "."
669
877
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
670
878
out_signature="v")
738
948
e.setAttribute("access", prop._dbus_access)
740
950
for if_tag in document.getElementsByTagName("interface"):
741
952
for tag in (make_tag(document, name, prop)
743
in self._get_all_dbus_properties()
954
in self._get_all_dbus_things("property")
744
955
if prop._dbus_interface
745
956
== if_tag.getAttribute("name")):
746
957
if_tag.appendChild(tag)
958
# Add annotation tags
959
for typ in ("method", "signal", "property"):
960
for tag in if_tag.getElementsByTagName(typ):
962
for name, prop in (self.
963
_get_all_dbus_things(typ)):
964
if (name == tag.getAttribute("name")
965
and prop._dbus_interface
966
== if_tag.getAttribute("name")):
967
annots.update(getattr
971
for name, value in annots.iteritems():
972
ann_tag = document.createElement(
974
ann_tag.setAttribute("name", name)
975
ann_tag.setAttribute("value", value)
976
tag.appendChild(ann_tag)
977
# Add interface annotation tags
978
for annotation, value in dict(
980
*(annotations().iteritems()
981
for name, annotations in
982
self._get_all_dbus_things("interface")
983
if name == if_tag.getAttribute("name")
985
ann_tag = document.createElement("annotation")
986
ann_tag.setAttribute("name", annotation)
987
ann_tag.setAttribute("value", value)
988
if_tag.appendChild(ann_tag)
747
989
# Add the names to the return values for the
748
990
# "org.freedesktop.DBus.Properties" methods
749
991
if (if_tag.getAttribute("name")
775
1017
return dbus.String(dt.isoformat(),
776
1018
variant_level=variant_level)
778
class transitional_clientdbus(DBusObjectWithProperties.__metaclass__):
1021
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
1023
"""Applied to an empty subclass of a D-Bus object, this metaclass
1024
will add additional D-Bus attributes matching a certain pattern.
779
1026
def __new__(mcs, name, bases, attr):
780
for key, old_dbusobj in attr.items():
781
new_interface = getattr(old_dbusobj, "_dbus_interface", "").replace("se.bsnet.fukt.", "se.recompile.")
782
if getattr(old_dbusobj, "_dbus_is_signal", False):
783
unwrappedfunc = dict(zip(old_dbusobj.func_code.co_freevars,
784
old_dbusobj.__closure__))["func"].cell_contents
785
newfunc = types.FunctionType(unwrappedfunc.func_code,
786
unwrappedfunc.func_globals,
787
unwrappedfunc.func_name,
788
unwrappedfunc.func_defaults,
789
unwrappedfunc.func_closure)
790
new_dbusfunc = dbus.service.signal(
791
new_interface, old_dbusobj._dbus_signature)(newfunc)
792
attr["_transitional_{0}_1".format(key)] = new_dbusfunc
793
attr["_transitional_{0}_0".format(key)] = old_dbusobj
794
def fixscope(func1, func2):
795
def newcall(*args, **kwargs):
796
func1(*args, **kwargs)
797
func2(*args, **kwargs)
800
attr[key] = fixscope(
801
old_dbusobj, attr["_transitional_{0}_1".format(key)])
803
if getattr(old_dbusobj, "_dbus_is_method", False):
804
new_dbusfunc = (dbus.service.method
806
old_dbusobj._dbus_in_signature,
807
old_dbusobj._dbus_out_signature)
809
(old_dbusobj.func_code,
810
old_dbusobj.func_globals,
811
old_dbusobj.func_name,
812
old_dbusobj.func_defaults,
813
old_dbusobj.func_closure)))
815
attr["_transitional_{0}".format(key)] = new_dbusfunc
816
if getattr(old_dbusobj, "_dbus_is_property", False):
817
new_dbusfunc = (dbus_service_property
819
old_dbusobj._dbus_signature,
820
old_dbusobj._dbus_access,
821
old_dbusobj._dbus_get_args_options["byte_arrays"])
823
(old_dbusobj.func_code,
824
old_dbusobj.func_globals,
825
old_dbusobj.func_name,
826
old_dbusobj.func_defaults,
827
old_dbusobj.func_closure)))
829
attr["_transitional_{0}".format(key)] = new_dbusfunc
1027
# Go through all the base classes which could have D-Bus
1028
# methods, signals, or properties in them
1029
old_interface_names = []
1030
for base in (b for b in bases
1031
if issubclass(b, dbus.service.Object)):
1032
# Go though all attributes of the base class
1033
for attrname, attribute in inspect.getmembers(base):
1034
# Ignore non-D-Bus attributes, and D-Bus attributes
1035
# with the wrong interface name
1036
if (not hasattr(attribute, "_dbus_interface")
1037
or not attribute._dbus_interface
1038
.startswith("se.recompile.Mandos")):
1040
# Create an alternate D-Bus interface name based on
1042
alt_interface = (attribute._dbus_interface
1043
.replace("se.recompile.Mandos",
1044
"se.bsnet.fukt.Mandos"))
1045
if alt_interface != attribute._dbus_interface:
1046
old_interface_names.append(alt_interface)
1047
# Is this a D-Bus signal?
1048
if getattr(attribute, "_dbus_is_signal", False):
1049
# Extract the original non-method function by
1051
nonmethod_func = (dict(
1052
zip(attribute.func_code.co_freevars,
1053
attribute.__closure__))["func"]
1055
# Create a new, but exactly alike, function
1056
# object, and decorate it to be a new D-Bus signal
1057
# with the alternate D-Bus interface name
1058
new_function = (dbus.service.signal
1060
attribute._dbus_signature)
1061
(types.FunctionType(
1062
nonmethod_func.func_code,
1063
nonmethod_func.func_globals,
1064
nonmethod_func.func_name,
1065
nonmethod_func.func_defaults,
1066
nonmethod_func.func_closure)))
1067
# Copy annotations, if any
1069
new_function._dbus_annotations = (
1070
dict(attribute._dbus_annotations))
1071
except AttributeError:
1073
# Define a creator of a function to call both the
1074
# old and new functions, so both the old and new
1075
# signals gets sent when the function is called
1076
def fixscope(func1, func2):
1077
"""This function is a scope container to pass
1078
func1 and func2 to the "call_both" function
1079
outside of its arguments"""
1080
def call_both(*args, **kwargs):
1081
"""This function will emit two D-Bus
1082
signals by calling func1 and func2"""
1083
func1(*args, **kwargs)
1084
func2(*args, **kwargs)
1086
# Create the "call_both" function and add it to
1088
attr[attrname] = fixscope(attribute,
1090
# Is this a D-Bus method?
1091
elif getattr(attribute, "_dbus_is_method", False):
1092
# Create a new, but exactly alike, function
1093
# object. Decorate it to be a new D-Bus method
1094
# with the alternate D-Bus interface name. Add it
1096
attr[attrname] = (dbus.service.method
1098
attribute._dbus_in_signature,
1099
attribute._dbus_out_signature)
1101
(attribute.func_code,
1102
attribute.func_globals,
1103
attribute.func_name,
1104
attribute.func_defaults,
1105
attribute.func_closure)))
1106
# Copy annotations, if any
1108
attr[attrname]._dbus_annotations = (
1109
dict(attribute._dbus_annotations))
1110
except AttributeError:
1112
# Is this a D-Bus property?
1113
elif getattr(attribute, "_dbus_is_property", False):
1114
# Create a new, but exactly alike, function
1115
# object, and decorate it to be a new D-Bus
1116
# property with the alternate D-Bus interface
1117
# name. Add it to the class.
1118
attr[attrname] = (dbus_service_property
1120
attribute._dbus_signature,
1121
attribute._dbus_access,
1123
._dbus_get_args_options
1126
(attribute.func_code,
1127
attribute.func_globals,
1128
attribute.func_name,
1129
attribute.func_defaults,
1130
attribute.func_closure)))
1131
# Copy annotations, if any
1133
attr[attrname]._dbus_annotations = (
1134
dict(attribute._dbus_annotations))
1135
except AttributeError:
1137
# Is this a D-Bus interface?
1138
elif getattr(attribute, "_dbus_is_interface", False):
1139
# Create a new, but exactly alike, function
1140
# object. Decorate it to be a new D-Bus interface
1141
# with the alternate D-Bus interface name. Add it
1143
attr[attrname] = (dbus_interface_annotations
1146
(attribute.func_code,
1147
attribute.func_globals,
1148
attribute.func_name,
1149
attribute.func_defaults,
1150
attribute.func_closure)))
1151
# Deprecate all old interfaces
1152
basename="_AlternateDBusNamesMetaclass_interface_annotation{0}"
1153
for old_interface_name in old_interface_names:
1154
@dbus_interface_annotations(old_interface_name)
1156
return { "org.freedesktop.DBus.Deprecated": "true" }
1157
# Find an unused name
1158
for aname in (basename.format(i) for i in
1160
if aname not in attr:
830
1163
return type.__new__(mcs, name, bases, attr)
832
1166
class ClientDBus(Client, DBusObjectWithProperties):
833
1167
"""A Client class using D-Bus
861
1192
def notifychangeproperty(transform_func,
862
1193
dbus_name, type_func=lambda x: x,
863
1194
variant_level=1):
864
""" Modify a variable so that its a property that announce its
866
transform_fun: Function that takes a value and transform it to
868
dbus_name: DBus name of the variable
1195
""" Modify a variable so that it's a property which announces
1196
its changes to DBus.
1198
transform_fun: Function that takes a value and a variant_level
1199
and transforms it to a D-Bus type.
1200
dbus_name: D-Bus name of the variable
869
1201
type_func: Function that transform the value before sending it
871
variant_level: DBus variant level. default: 1
1202
to the D-Bus. Default: no transform
1203
variant_level: D-Bus variant level. Default: 1
1205
attrname = "_{0}".format(dbus_name)
874
1206
def setter(self, value):
875
old_value = real_value[0]
876
real_value[0] = value
877
1207
if hasattr(self, "dbus_object_path"):
878
if type_func(old_value) != type_func(real_value[0]):
879
dbus_value = transform_func(type_func(real_value[0]),
1208
if (not hasattr(self, attrname) or
1209
type_func(getattr(self, attrname, None))
1210
!= type_func(value)):
1211
dbus_value = transform_func(type_func(value),
881
1214
self.PropertyChanged(dbus.String(dbus_name),
1216
setattr(self, attrname, value)
884
return property(lambda self: real_value[0], setter)
1218
return property(lambda self: getattr(self, attrname), setter)
887
1221
expires = notifychangeproperty(datetime_to_dbus, "Expires")
892
1226
last_enabled = notifychangeproperty(datetime_to_dbus,
894
1228
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
895
type_func = lambda checker: checker is not None)
1229
type_func = lambda checker:
1230
checker is not None)
896
1231
last_checked_ok = notifychangeproperty(datetime_to_dbus,
897
1232
"LastCheckedOK")
898
last_approval_request = notifychangeproperty(datetime_to_dbus,
899
"LastApprovalRequest")
1233
last_checker_status = notifychangeproperty(dbus.Int16,
1234
"LastCheckerStatus")
1235
last_approval_request = notifychangeproperty(
1236
datetime_to_dbus, "LastApprovalRequest")
900
1237
approved_by_default = notifychangeproperty(dbus.Boolean,
901
1238
"ApprovedByDefault")
902
approval_delay = notifychangeproperty(dbus.UInt16, "ApprovalDelay",
903
type_func = _timedelta_to_milliseconds)
904
approval_duration = notifychangeproperty(dbus.UInt16, "ApprovalDuration",
905
type_func = _timedelta_to_milliseconds)
1239
approval_delay = notifychangeproperty(dbus.UInt64,
1242
timedelta_to_milliseconds)
1243
approval_duration = notifychangeproperty(
1244
dbus.UInt64, "ApprovalDuration",
1245
type_func = timedelta_to_milliseconds)
906
1246
host = notifychangeproperty(dbus.String, "Host")
907
timeout = notifychangeproperty(dbus.UInt16, "Timeout",
908
type_func = _timedelta_to_milliseconds)
909
extended_timeout = notifychangeproperty(dbus.UInt16, "ExtendedTimeout",
910
type_func = _timedelta_to_milliseconds)
911
interval = notifychangeproperty(dbus.UInt16, "Interval",
912
type_func = _timedelta_to_milliseconds)
1247
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1249
timedelta_to_milliseconds)
1250
extended_timeout = notifychangeproperty(
1251
dbus.UInt64, "ExtendedTimeout",
1252
type_func = timedelta_to_milliseconds)
1253
interval = notifychangeproperty(dbus.UInt64,
1256
timedelta_to_milliseconds)
913
1257
checker_command = notifychangeproperty(dbus.String, "Checker")
915
1259
del notifychangeproperty
1700
2079
elif suffix == "w":
1701
2080
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1703
raise ValueError("Unknown suffix %r" % suffix)
2082
raise ValueError("Unknown suffix {0!r}"
1704
2084
except (ValueError, IndexError) as e:
1705
2085
raise ValueError(*(e.args))
1706
2086
timevalue += delta
1707
2087
return timevalue
1710
def if_nametoindex(interface):
1711
"""Call the C function if_nametoindex(), or equivalent
1713
Note: This function cannot accept a unicode string."""
1714
global if_nametoindex
1716
if_nametoindex = (ctypes.cdll.LoadLibrary
1717
(ctypes.util.find_library("c"))
1719
except (OSError, AttributeError):
1720
logger.warning("Doing if_nametoindex the hard way")
1721
def if_nametoindex(interface):
1722
"Get an interface index the hard way, i.e. using fcntl()"
1723
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1724
with contextlib.closing(socket.socket()) as s:
1725
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1726
struct.pack(str("16s16x"),
1728
interface_index = struct.unpack(str("I"),
1730
return interface_index
1731
return if_nametoindex(interface)
1734
2090
def daemon(nochdir = False, noclose = False):
1735
2091
"""See daemon(3). Standard BSD Unix function.
1932
2290
.gnutls_global_set_log_function(debug_gnutls))
1934
2292
# Redirect stdin so all checkers get /dev/null
1935
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2293
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1936
2294
os.dup2(null, sys.stdin.fileno())
1940
# No console logging
1941
logger.removeHandler(console)
1943
2298
# Need to fork before connecting to D-Bus
1945
2300
# Close all input and output, do double fork, etc.
2303
gobject.threads_init()
1948
2305
global main_loop
1949
2306
# From the Avahi example code
1950
DBusGMainLoop(set_as_default=True )
2307
DBusGMainLoop(set_as_default=True)
1951
2308
main_loop = gobject.MainLoop()
1952
2309
bus = dbus.SystemBus()
1953
2310
# End of Avahi example code
1956
bus_name = dbus.service.BusName("se.bsnet.fukt.Mandos",
1957
bus, do_not_queue=True)
1958
bus_name2 = dbus.service.BusName("se.recompile.Mandos",
1959
bus, do_not_queue=True)
2313
bus_name = dbus.service.BusName("se.recompile.Mandos",
2314
bus, do_not_queue=True)
2315
old_bus_name = (dbus.service.BusName
2316
("se.bsnet.fukt.Mandos", bus,
1960
2318
except dbus.exceptions.NameExistsException as e:
1961
2319
logger.error(unicode(e) + ", disabling D-Bus")
1962
2320
use_dbus = False
1963
2321
server_settings["use_dbus"] = False
1964
2322
tcp_server.use_dbus = False
1965
2323
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1966
service = AvahiService(name = server_settings["servicename"],
1967
servicetype = "_mandos._tcp",
1968
protocol = protocol, bus = bus)
2324
service = AvahiServiceToSyslog(name =
2325
server_settings["servicename"],
2326
servicetype = "_mandos._tcp",
2327
protocol = protocol, bus = bus)
1969
2328
if server_settings["interface"]:
1970
2329
service.interface = (if_nametoindex
1971
2330
(str(server_settings["interface"])))
1976
2335
client_class = Client
1978
client_class = functools.partial(ClientDBus, bus = bus)
1979
def client_config_items(config, section):
1980
special_settings = {
1981
"approved_by_default":
1982
lambda: config.getboolean(section,
1983
"approved_by_default"),
1985
for name, value in config.items(section):
2337
client_class = functools.partial(ClientDBusTransitional,
2340
client_settings = Client.config_parser(client_config)
2341
old_client_settings = {}
2344
# Get client data and settings from last running state.
2345
if server_settings["restore"]:
2347
with open(stored_state_path, "rb") as stored_state:
2348
clients_data, old_client_settings = (pickle.load
2350
os.remove(stored_state_path)
2351
except IOError as e:
2352
logger.warning("Could not load persistent state: {0}"
2354
if e.errno != errno.ENOENT:
2356
except EOFError as e:
2357
logger.warning("Could not load persistent state: "
2358
"EOFError: {0}".format(e))
2360
with PGPEngine() as pgp:
2361
for client_name, client in clients_data.iteritems():
2362
# Decide which value to use after restoring saved state.
2363
# We have three different values: Old config file,
2364
# new config file, and saved state.
2365
# New config value takes precedence if it differs from old
2366
# config value, otherwise use saved state.
2367
for name, value in client_settings[client_name].items():
2369
# For each value in new config, check if it
2370
# differs from the old config value (Except for
2371
# the "secret" attribute)
2372
if (name != "secret" and
2373
value != old_client_settings[client_name]
2375
client[name] = value
2379
# Clients who has passed its expire date can still be
2380
# enabled if its last checker was successful. Clients
2381
# whose checker succeeded before we stored its state is
2382
# assumed to have successfully run all checkers during
2384
if client["enabled"]:
2385
if datetime.datetime.utcnow() >= client["expires"]:
2386
if not client["last_checked_ok"]:
2388
"disabling client {0} - Client never "
2389
"performed a successful checker"
2390
.format(client_name))
2391
client["enabled"] = False
2392
elif client["last_checker_status"] != 0:
2394
"disabling client {0} - Client "
2395
"last checker failed with error code {1}"
2396
.format(client_name,
2397
client["last_checker_status"]))
2398
client["enabled"] = False
2400
client["expires"] = (datetime.datetime
2402
+ client["timeout"])
2403
logger.debug("Last checker succeeded,"
2404
" keeping {0} enabled"
2405
.format(client_name))
1987
yield (name, special_settings[name]())
1991
tcp_server.clients.update(set(
1992
client_class(name = section,
1993
config= dict(client_config_items(
1994
client_config, section)))
1995
for section in client_config.sections()))
2407
client["secret"] = (
2408
pgp.decrypt(client["encrypted_secret"],
2409
client_settings[client_name]
2412
# If decryption fails, we use secret from new settings
2413
logger.debug("Failed to decrypt {0} old secret"
2414
.format(client_name))
2415
client["secret"] = (
2416
client_settings[client_name]["secret"])
2419
# Add/remove clients based on new changes made to config
2420
for client_name in (set(old_client_settings)
2421
- set(client_settings)):
2422
del clients_data[client_name]
2423
for client_name in (set(client_settings)
2424
- set(old_client_settings)):
2425
clients_data[client_name] = client_settings[client_name]
2427
# Create all client objects
2428
for client_name, client in clients_data.iteritems():
2429
tcp_server.clients[client_name] = client_class(
2430
name = client_name, settings = client)
1996
2432
if not tcp_server.clients:
1997
2433
logger.warning("No clients defined")
2071
mandos_dbus_service = MandosDBusService()
2513
class MandosDBusServiceTransitional(MandosDBusService):
2514
__metaclass__ = AlternateDBusNamesMetaclass
2515
mandos_dbus_service = MandosDBusServiceTransitional()
2074
2518
"Cleanup function; run on exit"
2075
2519
service.cleanup()
2521
multiprocessing.active_children()
2522
if not (tcp_server.clients or client_settings):
2525
# Store client before exiting. Secrets are encrypted with key
2526
# based on what config file has. If config file is
2527
# removed/edited, old secret will thus be unrecovable.
2529
with PGPEngine() as pgp:
2530
for client in tcp_server.clients.itervalues():
2531
key = client_settings[client.name]["secret"]
2532
client.encrypted_secret = pgp.encrypt(client.secret,
2536
# A list of attributes that can not be pickled
2538
exclude = set(("bus", "changedstate", "secret",
2540
for name, typ in (inspect.getmembers
2541
(dbus.service.Object)):
2544
client_dict["encrypted_secret"] = (client
2546
for attr in client.client_structure:
2547
if attr not in exclude:
2548
client_dict[attr] = getattr(client, attr)
2550
clients[client.name] = client_dict
2551
del client_settings[client.name]["secret"]
2554
tempfd, tempname = tempfile.mkstemp(suffix=".pickle",
2557
(stored_state_path))
2558
with os.fdopen(tempfd, "wb") as stored_state:
2559
pickle.dump((clients, client_settings), stored_state)
2560
os.rename(tempname, stored_state_path)
2561
except (IOError, OSError) as e:
2562
logger.warning("Could not save persistent state: {0}"
2569
if e.errno not in set((errno.ENOENT, errno.EACCES,
2573
# Delete all clients, and settings from config
2077
2574
while tcp_server.clients:
2078
client = tcp_server.clients.pop()
2575
name, client = tcp_server.clients.popitem()
2080
2577
client.remove_from_connection()
2081
client.disable_hook = None
2082
2578
# Don't signal anything except ClientRemoved
2083
2579
client.disable(quiet=True)
2085
2581
# Emit D-Bus signal
2086
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
2582
mandos_dbus_service.ClientRemoved(client
2585
client_settings.clear()
2089
2587
atexit.register(cleanup)
2091
for client in tcp_server.clients:
2589
for client in tcp_server.clients.itervalues():
2093
2591
# Emit D-Bus signal
2094
2592
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2593
# Need to initiate checking of clients
2595
client.init_checker()
2097
2597
tcp_server.enable()
2098
2598
tcp_server.server_activate()