171
189
def password_encode(self, password):
172
190
# Passphrase can not be empty and can not contain newlines or
173
191
# NUL bytes. So we prefix it and hex encode it.
174
return b"mandos" + binascii.hexlify(password)
192
encoded = b"mandos" + binascii.hexlify(password)
193
if len(encoded) > 2048:
194
# GnuPG can't handle long passwords, so encode differently
195
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
196
.replace(b"\n", b"\\n")
197
.replace(b"\0", b"\\x00"))
176
200
def encrypt(self, data, password):
177
self.gnupg.passphrase = self.password_encode(password)
178
with open(os.devnull) as devnull:
180
proc = self.gnupg.run(['--symmetric'],
181
create_fhs=['stdin', 'stdout'],
182
attach_fhs={'stderr': devnull})
183
with contextlib.closing(proc.handles['stdin']) as f:
185
with contextlib.closing(proc.handles['stdout']) as f:
186
ciphertext = f.read()
190
self.gnupg.passphrase = None
201
passphrase = self.password_encode(password)
202
with tempfile.NamedTemporaryFile(
203
dir=self.tempdir) as passfile:
204
passfile.write(passphrase)
206
proc = subprocess.Popen(['gpg', '--symmetric',
210
stdin = subprocess.PIPE,
211
stdout = subprocess.PIPE,
212
stderr = subprocess.PIPE)
213
ciphertext, err = proc.communicate(input = data)
214
if proc.returncode != 0:
191
216
return ciphertext
193
218
def decrypt(self, data, password):
194
self.gnupg.passphrase = self.password_encode(password)
195
with open(os.devnull) as devnull:
197
proc = self.gnupg.run(['--decrypt'],
198
create_fhs=['stdin', 'stdout'],
199
attach_fhs={'stderr': devnull})
200
with contextlib.closing(proc.handles['stdin'] ) as f:
202
with contextlib.closing(proc.handles['stdout']) as f:
203
decrypted_plaintext = f.read()
207
self.gnupg.passphrase = None
219
passphrase = self.password_encode(password)
220
with tempfile.NamedTemporaryFile(
221
dir = self.tempdir) as passfile:
222
passfile.write(passphrase)
224
proc = subprocess.Popen(['gpg', '--decrypt',
228
stdin = subprocess.PIPE,
229
stdout = subprocess.PIPE,
230
stderr = subprocess.PIPE)
231
decrypted_plaintext, err = proc.communicate(input = data)
232
if proc.returncode != 0:
208
234
return decrypted_plaintext
212
237
class AvahiError(Exception):
213
238
def __init__(self, value, *args, **kwargs):
214
239
self.value = value
215
super(AvahiError, self).__init__(value, *args, **kwargs)
216
def __unicode__(self):
217
return unicode(repr(self.value))
240
return super(AvahiError, self).__init__(value, *args,
219
244
class AvahiServiceError(AvahiError):
222
248
class AvahiGroupError(AvahiError):
415
475
last_checked_ok: datetime.datetime(); (UTC) or None
416
476
last_checker_status: integer between 0 and 255 reflecting exit
417
477
status of last checker. -1 reflects crashed
478
checker, -2 means no checker completed yet.
479
last_checker_signal: The signal which killed the last checker, if
480
last_checker_status is -1
419
481
last_enabled: datetime.datetime(); (UTC) or None
420
482
name: string; from the config file, used in log messages and
421
483
D-Bus identifiers
422
484
secret: bytestring; sent verbatim (over TLS) to client
423
485
timeout: datetime.timedelta(); How long from last_checked_ok
424
486
until this client is disabled
425
extended_timeout: extra long timeout when password has been sent
487
extended_timeout: extra long timeout when secret has been sent
426
488
runtime_expansions: Allowed attributes for runtime expansion.
427
489
expires: datetime.datetime(); time (UTC) when a client will be
428
490
disabled, or None
491
server_settings: The server_settings dict from main()
431
494
runtime_expansions = ("approval_delay", "approval_duration",
432
"created", "enabled", "fingerprint",
433
"host", "interval", "last_checked_ok",
495
"created", "enabled", "expires",
496
"fingerprint", "host", "interval",
497
"last_approval_request", "last_checked_ok",
434
498
"last_enabled", "name", "timeout")
435
client_defaults = { "timeout": "5m",
436
"extended_timeout": "15m",
438
"checker": "fping -q -- %%(host)s",
440
"approval_delay": "0s",
441
"approval_duration": "1s",
442
"approved_by_default": "True",
446
def timeout_milliseconds(self):
447
"Return the 'timeout' attribute in milliseconds"
448
return timedelta_to_milliseconds(self.timeout)
450
def extended_timeout_milliseconds(self):
451
"Return the 'extended_timeout' attribute in milliseconds"
452
return timedelta_to_milliseconds(self.extended_timeout)
454
def interval_milliseconds(self):
455
"Return the 'interval' attribute in milliseconds"
456
return timedelta_to_milliseconds(self.interval)
458
def approval_delay_milliseconds(self):
459
return timedelta_to_milliseconds(self.approval_delay)
501
"extended_timeout": "PT15M",
503
"checker": "fping -q -- %%(host)s",
505
"approval_delay": "PT0S",
506
"approval_duration": "PT1S",
507
"approved_by_default": "True",
462
512
def config_parser(config):
463
513
"""Construct a new dict of client settings of this form:
598
644
def init_checker(self):
599
645
# Schedule a new checker to be started an 'interval' from now,
600
646
# and every interval from then on.
601
self.checker_initiator_tag = (gobject.timeout_add
602
(self.interval_milliseconds(),
647
if self.checker_initiator_tag is not None:
648
gobject.source_remove(self.checker_initiator_tag)
649
self.checker_initiator_tag = gobject.timeout_add(
650
int(self.interval.total_seconds() * 1000),
604
652
# Schedule a disable() when 'timeout' has passed
605
self.disable_initiator_tag = (gobject.timeout_add
606
(self.timeout_milliseconds(),
653
if self.disable_initiator_tag is not None:
654
gobject.source_remove(self.disable_initiator_tag)
655
self.disable_initiator_tag = gobject.timeout_add(
656
int(self.timeout.total_seconds() * 1000), self.disable)
608
657
# Also start a new checker *right now*.
609
658
self.start_checker()
611
def checker_callback(self, pid, condition, command):
660
def checker_callback(self, source, condition, connection,
612
662
"""The checker has completed, so take appropriate actions."""
613
663
self.checker_callback_tag = None
614
664
self.checker = None
615
if os.WIFEXITED(condition):
616
self.last_checker_status = os.WEXITSTATUS(condition)
665
# Read return code from connection (see call_pipe)
666
returncode = connection.recv()
670
self.last_checker_status = returncode
671
self.last_checker_signal = None
617
672
if self.last_checker_status == 0:
618
673
logger.info("Checker for %(name)s succeeded",
620
675
self.checked_ok()
622
logger.info("Checker for %(name)s failed",
677
logger.info("Checker for %(name)s failed", vars(self))
625
679
self.last_checker_status = -1
680
self.last_checker_signal = -returncode
626
681
logger.warning("Checker for %(name)s crashed?",
629
def checked_ok(self, timeout=None):
630
"""Bump up the timeout for this client.
632
This should only be called when the client has been seen,
685
def checked_ok(self):
686
"""Assert that the client has been seen, alive and well."""
687
self.last_checked_ok = datetime.datetime.utcnow()
688
self.last_checker_status = 0
689
self.last_checker_signal = None
692
def bump_timeout(self, timeout=None):
693
"""Bump up the timeout for this client."""
635
694
if timeout is None:
636
695
timeout = self.timeout
637
self.last_checked_ok = datetime.datetime.utcnow()
638
696
if self.disable_initiator_tag is not None:
639
697
gobject.source_remove(self.disable_initiator_tag)
698
self.disable_initiator_tag = None
640
699
if getattr(self, "enabled", False):
641
self.disable_initiator_tag = (gobject.timeout_add
642
(timedelta_to_milliseconds
643
(timeout), self.disable))
700
self.disable_initiator_tag = gobject.timeout_add(
701
int(timeout.total_seconds() * 1000), self.disable)
644
702
self.expires = datetime.datetime.utcnow() + timeout
646
704
def need_approval(self):
652
710
If a checker already exists, leave it running and do
654
712
# The reason for not killing a running checker is that if we
655
# did that, then if a checker (for some reason) started
656
# running slowly and taking more than 'interval' time, the
657
# client would inevitably timeout, since no checker would get
658
# a chance to run to completion. If we instead leave running
713
# did that, and if a checker (for some reason) started running
714
# slowly and taking more than 'interval' time, then the client
715
# would inevitably timeout, since no checker would get a
716
# chance to run to completion. If we instead leave running
659
717
# checkers alone, the checker would have to take more time
660
718
# than 'timeout' for the client to be disabled, which is as it
663
# If a checker exists, make sure it is not a zombie
665
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
666
except (AttributeError, OSError) as error:
667
if (isinstance(error, OSError)
668
and error.errno != errno.ECHILD):
672
logger.warning("Checker was a zombie")
673
gobject.source_remove(self.checker_callback_tag)
674
self.checker_callback(pid, status,
675
self.current_checker_command)
721
if self.checker is not None and not self.checker.is_alive():
722
logger.warning("Checker was not alive; joining")
676
725
# Start a new checker if needed
677
726
if self.checker is None:
727
# Escape attributes for the shell
729
attr: re.escape(str(getattr(self, attr)))
730
for attr in self.runtime_expansions }
679
# In case checker_command has exactly one % operator
680
command = self.checker_command % self.host
682
# Escape attributes for the shell
683
escaped_attrs = dict(
685
re.escape(unicode(str(getattr(self, attr, "")),
689
self.runtime_expansions)
692
command = self.checker_command % escaped_attrs
693
except TypeError as error:
694
logger.error('Could not format string "%s":'
695
' %s', self.checker_command, error)
696
return True # Try again later
732
command = self.checker_command % escaped_attrs
733
except TypeError as error:
734
logger.error('Could not format string "%s"',
735
self.checker_command,
737
return True # Try again later
697
738
self.current_checker_command = command
699
logger.info("Starting checker %r for %s",
701
# We don't need to redirect stdout and stderr, since
702
# in normal mode, that is already done by daemon(),
703
# and in debug mode we don't want to. (Stdin is
704
# always replaced by /dev/null.)
705
self.checker = subprocess.Popen(command,
708
self.checker_callback_tag = (gobject.child_watch_add
710
self.checker_callback,
712
# The checker may have completed before the gobject
713
# watch was added. Check for this.
714
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
716
gobject.source_remove(self.checker_callback_tag)
717
self.checker_callback(pid, status, command)
718
except OSError as error:
719
logger.error("Failed to start subprocess: %s",
739
logger.info("Starting checker %r for %s", command,
741
# We don't need to redirect stdout and stderr, since
742
# in normal mode, that is already done by daemon(),
743
# and in debug mode we don't want to. (Stdin is
744
# always replaced by /dev/null.)
745
# The exception is when not debugging but nevertheless
746
# running in the foreground; use the previously
748
popen_args = { "close_fds": True,
751
if (not self.server_settings["debug"]
752
and self.server_settings["foreground"]):
753
popen_args.update({"stdout": wnull,
755
pipe = multiprocessing.Pipe(duplex = False)
756
self.checker = multiprocessing.Process(
758
args = (pipe[1], subprocess.call, command),
761
self.checker_callback_tag = gobject.io_add_watch(
762
pipe[0].fileno(), gobject.IO_IN,
763
self.checker_callback, pipe[0], command)
721
764
# Re-run this periodically if run by gobject.timeout_add
801
def _is_dbus_property(obj):
802
return getattr(obj, "_dbus_is_property", False)
881
def _is_dbus_thing(thing):
882
"""Returns a function testing if an attribute is a D-Bus thing
884
If called like _is_dbus_thing("method") it returns a function
885
suitable for use as predicate to inspect.getmembers().
887
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
804
def _get_all_dbus_properties(self):
890
def _get_all_dbus_things(self, thing):
805
891
"""Returns a generator of (name, attribute) pairs
807
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
893
return ((getattr(athing.__get__(self), "_dbus_name", name),
894
athing.__get__(self))
808
895
for cls in self.__class__.__mro__
810
inspect.getmembers(cls, self._is_dbus_property))
897
inspect.getmembers(cls, self._is_dbus_thing(thing)))
812
899
def _get_dbus_property(self, interface_name, property_name):
813
900
"""Returns a bound method if one exists which is a D-Bus
814
901
property with the specified name and interface.
816
for cls in self.__class__.__mro__:
817
for name, value in (inspect.getmembers
818
(cls, self._is_dbus_property)):
903
for cls in self.__class__.__mro__:
904
for name, value in inspect.getmembers(
905
cls, self._is_dbus_thing("property")):
819
906
if (value._dbus_name == property_name
820
907
and value._dbus_interface == interface_name):
821
908
return value.__get__(self)
823
910
# No such property
824
raise DBusPropertyNotFound(self.dbus_object_path + ":"
825
+ interface_name + "."
911
raise DBusPropertyNotFound("{}:{}.{}".format(
912
self.dbus_object_path, interface_name, property_name))
828
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
914
@dbus.service.method(dbus.PROPERTIES_IFACE,
829
916
out_signature="v")
830
917
def Get(self, interface_name, property_name):
831
918
"""Standard D-Bus property Get() method, see D-Bus standard.
875
965
if not hasattr(value, "variant_level"):
876
966
properties[name] = value
878
properties[name] = type(value)(value, variant_level=
879
value.variant_level+1)
968
properties[name] = type(value)(
969
value, variant_level = value.variant_level + 1)
880
970
return dbus.Dictionary(properties, signature="sv")
972
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
973
def PropertiesChanged(self, interface_name, changed_properties,
974
invalidated_properties):
975
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
882
980
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
883
981
out_signature="s",
884
982
path_keyword='object_path',
885
983
connection_keyword='connection')
886
984
def Introspect(self, object_path, connection):
887
"""Standard D-Bus method, overloaded to insert property tags.
985
"""Overloading of standard D-Bus method.
987
Inserts property tags and interface annotation tags.
889
989
xmlstring = dbus.service.Object.Introspect(self, object_path,
892
992
document = xml.dom.minidom.parseString(xmlstring)
893
994
def make_tag(document, name, prop):
894
995
e = document.createElement("property")
895
996
e.setAttribute("name", name)
896
997
e.setAttribute("type", prop._dbus_signature)
897
998
e.setAttribute("access", prop._dbus_access)
899
1001
for if_tag in document.getElementsByTagName("interface"):
900
1003
for tag in (make_tag(document, name, prop)
902
in self._get_all_dbus_properties()
1005
in self._get_all_dbus_things("property")
903
1006
if prop._dbus_interface
904
1007
== if_tag.getAttribute("name")):
905
1008
if_tag.appendChild(tag)
1009
# Add annotation tags
1010
for typ in ("method", "signal", "property"):
1011
for tag in if_tag.getElementsByTagName(typ):
1013
for name, prop in (self.
1014
_get_all_dbus_things(typ)):
1015
if (name == tag.getAttribute("name")
1016
and prop._dbus_interface
1017
== if_tag.getAttribute("name")):
1018
annots.update(getattr(
1019
prop, "_dbus_annotations", {}))
1020
for name, value in annots.items():
1021
ann_tag = document.createElement(
1023
ann_tag.setAttribute("name", name)
1024
ann_tag.setAttribute("value", value)
1025
tag.appendChild(ann_tag)
1026
# Add interface annotation tags
1027
for annotation, value in dict(
1028
itertools.chain.from_iterable(
1029
annotations().items()
1030
for name, annotations
1031
in self._get_all_dbus_things("interface")
1032
if name == if_tag.getAttribute("name")
1034
ann_tag = document.createElement("annotation")
1035
ann_tag.setAttribute("name", annotation)
1036
ann_tag.setAttribute("value", value)
1037
if_tag.appendChild(ann_tag)
906
1038
# Add the names to the return values for the
907
1039
# "org.freedesktop.DBus.Properties" methods
908
1040
if (if_tag.getAttribute("name")
923
1055
except (AttributeError, xml.dom.DOMException,
924
1056
xml.parsers.expat.ExpatError) as error:
925
1057
logger.error("Failed to override Introspection method",
927
1059
return xmlstring
930
def datetime_to_dbus (dt, variant_level=0):
1062
def datetime_to_dbus(dt, variant_level=0):
931
1063
"""Convert a UTC datetime.datetime() to a D-Bus type."""
933
1065
return dbus.String("", variant_level = variant_level)
934
return dbus.String(dt.isoformat(),
935
variant_level=variant_level)
938
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
940
"""Applied to an empty subclass of a D-Bus object, this metaclass
941
will add additional D-Bus attributes matching a certain pattern.
1066
return dbus.String(dt.isoformat(), variant_level=variant_level)
1069
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1070
"""A class decorator; applied to a subclass of
1071
dbus.service.Object, it will add alternate D-Bus attributes with
1072
interface names according to the "alt_interface_names" mapping.
1075
@alternate_dbus_interfaces({"org.example.Interface":
1076
"net.example.AlternateInterface"})
1077
class SampleDBusObject(dbus.service.Object):
1078
@dbus.service.method("org.example.Interface")
1079
def SampleDBusMethod():
1082
The above "SampleDBusMethod" on "SampleDBusObject" will be
1083
reachable via two interfaces: "org.example.Interface" and
1084
"net.example.AlternateInterface", the latter of which will have
1085
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1086
"true", unless "deprecate" is passed with a False value.
1088
This works for methods and signals, and also for D-Bus properties
1089
(from DBusObjectWithProperties) and interfaces (from the
1090
dbus_interface_annotations decorator).
943
def __new__(mcs, name, bases, attr):
944
# Go through all the base classes which could have D-Bus
945
# methods, signals, or properties in them
946
for base in (b for b in bases
947
if issubclass(b, dbus.service.Object)):
948
# Go though all attributes of the base class
949
for attrname, attribute in inspect.getmembers(base):
1094
for orig_interface_name, alt_interface_name in (
1095
alt_interface_names.items()):
1097
interface_names = set()
1098
# Go though all attributes of the class
1099
for attrname, attribute in inspect.getmembers(cls):
950
1100
# Ignore non-D-Bus attributes, and D-Bus attributes
951
1101
# with the wrong interface name
952
1102
if (not hasattr(attribute, "_dbus_interface")
953
or not attribute._dbus_interface
954
.startswith("se.recompile.Mandos")):
1103
or not attribute._dbus_interface.startswith(
1104
orig_interface_name)):
956
1106
# Create an alternate D-Bus interface name based on
957
1107
# the current name
958
alt_interface = (attribute._dbus_interface
959
.replace("se.recompile.Mandos",
960
"se.bsnet.fukt.Mandos"))
1108
alt_interface = attribute._dbus_interface.replace(
1109
orig_interface_name, alt_interface_name)
1110
interface_names.add(alt_interface)
961
1111
# Is this a D-Bus signal?
962
1112
if getattr(attribute, "_dbus_is_signal", False):
963
# Extract the original non-method function by
965
nonmethod_func = (dict(
1113
if sys.version_info.major == 2:
1114
# Extract the original non-method undecorated
1115
# function by black magic
1116
nonmethod_func = (dict(
966
1117
zip(attribute.func_code.co_freevars,
967
attribute.__closure__))["func"]
1118
attribute.__closure__))
1119
["func"].cell_contents)
1121
nonmethod_func = attribute
969
1122
# Create a new, but exactly alike, function
970
1123
# object, and decorate it to be a new D-Bus signal
971
1124
# with the alternate D-Bus interface name
972
new_function = (dbus.service.signal
974
attribute._dbus_signature)
976
nonmethod_func.func_code,
977
nonmethod_func.func_globals,
978
nonmethod_func.func_name,
979
nonmethod_func.func_defaults,
980
nonmethod_func.func_closure)))
1125
if sys.version_info.major == 2:
1126
new_function = types.FunctionType(
1127
nonmethod_func.func_code,
1128
nonmethod_func.func_globals,
1129
nonmethod_func.func_name,
1130
nonmethod_func.func_defaults,
1131
nonmethod_func.func_closure)
1133
new_function = types.FunctionType(
1134
nonmethod_func.__code__,
1135
nonmethod_func.__globals__,
1136
nonmethod_func.__name__,
1137
nonmethod_func.__defaults__,
1138
nonmethod_func.__closure__)
1139
new_function = (dbus.service.signal(
1141
attribute._dbus_signature)(new_function))
1142
# Copy annotations, if any
1144
new_function._dbus_annotations = dict(
1145
attribute._dbus_annotations)
1146
except AttributeError:
981
1148
# Define a creator of a function to call both the
982
# old and new functions, so both the old and new
983
# signals gets sent when the function is called
1149
# original and alternate functions, so both the
1150
# original and alternate signals gets sent when
1151
# the function is called
984
1152
def fixscope(func1, func2):
985
1153
"""This function is a scope container to pass
986
1154
func1 and func2 to the "call_both" function
987
1155
outside of its arguments"""
988
1157
def call_both(*args, **kwargs):
989
1158
"""This function will emit two D-Bus
990
1159
signals by calling func1 and func2"""
991
1160
func1(*args, **kwargs)
992
1161
func2(*args, **kwargs)
993
1163
return call_both
994
1164
# Create the "call_both" function and add it to
996
attr[attrname] = fixscope(attribute,
1166
attr[attrname] = fixscope(attribute, new_function)
998
1167
# Is this a D-Bus method?
999
1168
elif getattr(attribute, "_dbus_is_method", False):
1000
1169
# Create a new, but exactly alike, function
1001
1170
# object. Decorate it to be a new D-Bus method
1002
1171
# with the alternate D-Bus interface name. Add it
1003
1172
# to the class.
1004
attr[attrname] = (dbus.service.method
1006
attribute._dbus_in_signature,
1007
attribute._dbus_out_signature)
1009
(attribute.func_code,
1010
attribute.func_globals,
1011
attribute.func_name,
1012
attribute.func_defaults,
1013
attribute.func_closure)))
1174
dbus.service.method(
1176
attribute._dbus_in_signature,
1177
attribute._dbus_out_signature)
1178
(types.FunctionType(attribute.func_code,
1179
attribute.func_globals,
1180
attribute.func_name,
1181
attribute.func_defaults,
1182
attribute.func_closure)))
1183
# Copy annotations, if any
1185
attr[attrname]._dbus_annotations = dict(
1186
attribute._dbus_annotations)
1187
except AttributeError:
1014
1189
# Is this a D-Bus property?
1015
1190
elif getattr(attribute, "_dbus_is_property", False):
1016
1191
# Create a new, but exactly alike, function
1017
1192
# object, and decorate it to be a new D-Bus
1018
1193
# property with the alternate D-Bus interface
1019
1194
# name. Add it to the class.
1020
attr[attrname] = (dbus_service_property
1022
attribute._dbus_signature,
1023
attribute._dbus_access,
1025
._dbus_get_args_options
1028
(attribute.func_code,
1029
attribute.func_globals,
1030
attribute.func_name,
1031
attribute.func_defaults,
1032
attribute.func_closure)))
1033
return type.__new__(mcs, name, bases, attr)
1195
attr[attrname] = (dbus_service_property(
1196
alt_interface, attribute._dbus_signature,
1197
attribute._dbus_access,
1198
attribute._dbus_get_args_options
1200
(types.FunctionType(
1201
attribute.func_code,
1202
attribute.func_globals,
1203
attribute.func_name,
1204
attribute.func_defaults,
1205
attribute.func_closure)))
1206
# Copy annotations, if any
1208
attr[attrname]._dbus_annotations = dict(
1209
attribute._dbus_annotations)
1210
except AttributeError:
1212
# Is this a D-Bus interface?
1213
elif getattr(attribute, "_dbus_is_interface", False):
1214
# Create a new, but exactly alike, function
1215
# object. Decorate it to be a new D-Bus interface
1216
# with the alternate D-Bus interface name. Add it
1219
dbus_interface_annotations(alt_interface)
1220
(types.FunctionType(attribute.func_code,
1221
attribute.func_globals,
1222
attribute.func_name,
1223
attribute.func_defaults,
1224
attribute.func_closure)))
1226
# Deprecate all alternate interfaces
1227
iname="_AlternateDBusNames_interface_annotation{}"
1228
for interface_name in interface_names:
1230
@dbus_interface_annotations(interface_name)
1232
return { "org.freedesktop.DBus.Deprecated":
1234
# Find an unused name
1235
for aname in (iname.format(i)
1236
for i in itertools.count()):
1237
if aname not in attr:
1241
# Replace the class with a new subclass of it with
1242
# methods, signals, etc. as created above.
1243
cls = type(b"{}Alternate".format(cls.__name__),
1250
@alternate_dbus_interfaces({"se.recompile.Mandos":
1251
"se.bsnet.fukt.Mandos"})
1036
1252
class ClientDBus(Client, DBusObjectWithProperties):
1037
1253
"""A Client class using D-Bus
1098
1325
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1099
1326
last_enabled = notifychangeproperty(datetime_to_dbus,
1101
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1102
type_func = lambda checker:
1103
checker is not None)
1328
checker = notifychangeproperty(
1329
dbus.Boolean, "CheckerRunning",
1330
type_func = lambda checker: checker is not None)
1104
1331
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1105
1332
"LastCheckedOK")
1333
last_checker_status = notifychangeproperty(dbus.Int16,
1334
"LastCheckerStatus")
1106
1335
last_approval_request = notifychangeproperty(
1107
1336
datetime_to_dbus, "LastApprovalRequest")
1108
1337
approved_by_default = notifychangeproperty(dbus.Boolean,
1109
1338
"ApprovedByDefault")
1110
approval_delay = notifychangeproperty(dbus.UInt64,
1113
timedelta_to_milliseconds)
1339
approval_delay = notifychangeproperty(
1340
dbus.UInt64, "ApprovalDelay",
1341
type_func = lambda td: td.total_seconds() * 1000)
1114
1342
approval_duration = notifychangeproperty(
1115
1343
dbus.UInt64, "ApprovalDuration",
1116
type_func = timedelta_to_milliseconds)
1344
type_func = lambda td: td.total_seconds() * 1000)
1117
1345
host = notifychangeproperty(dbus.String, "Host")
1118
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1120
timedelta_to_milliseconds)
1346
timeout = notifychangeproperty(
1347
dbus.UInt64, "Timeout",
1348
type_func = lambda td: td.total_seconds() * 1000)
1121
1349
extended_timeout = notifychangeproperty(
1122
1350
dbus.UInt64, "ExtendedTimeout",
1123
type_func = timedelta_to_milliseconds)
1124
interval = notifychangeproperty(dbus.UInt64,
1127
timedelta_to_milliseconds)
1351
type_func = lambda td: td.total_seconds() * 1000)
1352
interval = notifychangeproperty(
1353
dbus.UInt64, "Interval",
1354
type_func = lambda td: td.total_seconds() * 1000)
1128
1355
checker_command = notifychangeproperty(dbus.String, "Checker")
1356
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1357
invalidate_only=True)
1130
1359
del notifychangeproperty
1138
1367
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1139
1368
Client.__del__(self, *args, **kwargs)
1141
def checker_callback(self, pid, condition, command,
1143
self.checker_callback_tag = None
1145
if os.WIFEXITED(condition):
1146
exitstatus = os.WEXITSTATUS(condition)
1370
def checker_callback(self, source, condition,
1371
connection, command, *args, **kwargs):
1372
ret = Client.checker_callback(self, source, condition,
1373
connection, command, *args,
1375
exitstatus = self.last_checker_status
1147
1377
# Emit D-Bus signal
1148
1378
self.CheckerCompleted(dbus.Int16(exitstatus),
1149
dbus.Int64(condition),
1150
1380
dbus.String(command))
1152
1382
# Emit D-Bus signal
1153
1383
self.CheckerCompleted(dbus.Int16(-1),
1154
dbus.Int64(condition),
1385
self.last_checker_signal),
1155
1386
dbus.String(command))
1157
return Client.checker_callback(self, pid, condition, command,
1160
1389
def start_checker(self, *args, **kwargs):
1161
old_checker = self.checker
1162
if self.checker is not None:
1163
old_checker_pid = self.checker.pid
1165
old_checker_pid = None
1390
old_checker_pid = getattr(self.checker, "pid", None)
1166
1391
r = Client.start_checker(self, *args, **kwargs)
1167
1392
# Only if new checker process was started
1168
1393
if (self.checker is not None
1361
1590
return datetime_to_dbus(self.last_approval_request)
1363
1592
# Timeout - property
1364
@dbus_service_property(_interface, signature="t",
1593
@dbus_service_property(_interface,
1365
1595
access="readwrite")
1366
1596
def Timeout_dbus_property(self, value=None):
1367
1597
if value is None: # get
1368
return dbus.UInt64(self.timeout_milliseconds())
1598
return dbus.UInt64(self.timeout.total_seconds() * 1000)
1599
old_timeout = self.timeout
1369
1600
self.timeout = datetime.timedelta(0, 0, 0, value)
1370
# Reschedule timeout
1601
# Reschedule disabling
1371
1602
if self.enabled:
1372
1603
now = datetime.datetime.utcnow()
1373
time_to_die = timedelta_to_milliseconds(
1374
(self.last_checked_ok + self.timeout) - now)
1375
if time_to_die <= 0:
1604
self.expires += self.timeout - old_timeout
1605
if self.expires <= now:
1376
1606
# The timeout has passed
1379
self.expires = (now +
1380
datetime.timedelta(milliseconds =
1382
1609
if (getattr(self, "disable_initiator_tag", None)
1385
1612
gobject.source_remove(self.disable_initiator_tag)
1386
self.disable_initiator_tag = (gobject.timeout_add
1613
self.disable_initiator_tag = gobject.timeout_add(
1614
int((self.expires - now).total_seconds() * 1000),
1390
1617
# ExtendedTimeout - property
1391
@dbus_service_property(_interface, signature="t",
1618
@dbus_service_property(_interface,
1392
1620
access="readwrite")
1393
1621
def ExtendedTimeout_dbus_property(self, value=None):
1394
1622
if value is None: # get
1395
return dbus.UInt64(self.extended_timeout_milliseconds())
1623
return dbus.UInt64(self.extended_timeout.total_seconds()
1396
1625
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1398
1627
# Interval - property
1399
@dbus_service_property(_interface, signature="t",
1628
@dbus_service_property(_interface,
1400
1630
access="readwrite")
1401
1631
def Interval_dbus_property(self, value=None):
1402
1632
if value is None: # get
1403
return dbus.UInt64(self.interval_milliseconds())
1633
return dbus.UInt64(self.interval.total_seconds() * 1000)
1404
1634
self.interval = datetime.timedelta(0, 0, 0, value)
1405
1635
if getattr(self, "checker_initiator_tag", None) is None:
1407
1637
if self.enabled:
1408
1638
# Reschedule checker run
1409
1639
gobject.source_remove(self.checker_initiator_tag)
1410
self.checker_initiator_tag = (gobject.timeout_add
1411
(value, self.start_checker))
1412
self.start_checker() # Start one now, too
1640
self.checker_initiator_tag = gobject.timeout_add(
1641
value, self.start_checker)
1642
self.start_checker() # Start one now, too
1414
1644
# Checker - property
1415
@dbus_service_property(_interface, signature="s",
1645
@dbus_service_property(_interface,
1416
1647
access="readwrite")
1417
1648
def Checker_dbus_property(self, value=None):
1418
1649
if value is None: # get
1419
1650
return dbus.String(self.checker_command)
1420
self.checker_command = unicode(value)
1651
self.checker_command = str(value)
1422
1653
# CheckerRunning - property
1423
@dbus_service_property(_interface, signature="b",
1654
@dbus_service_property(_interface,
1424
1656
access="readwrite")
1425
1657
def CheckerRunning_dbus_property(self, value=None):
1426
1658
if value is None: # get
1658
1883
def fingerprint(openpgp):
1659
1884
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1660
1885
# New GnuTLS "datum" with the OpenPGP public key
1661
datum = (gnutls.library.types
1662
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1665
ctypes.c_uint(len(openpgp))))
1886
datum = gnutls.library.types.gnutls_datum_t(
1887
ctypes.cast(ctypes.c_char_p(openpgp),
1888
ctypes.POINTER(ctypes.c_ubyte)),
1889
ctypes.c_uint(len(openpgp)))
1666
1890
# New empty GnuTLS certificate
1667
1891
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1668
(gnutls.library.functions
1669
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
1892
gnutls.library.functions.gnutls_openpgp_crt_init(
1670
1894
# Import the OpenPGP public key into the certificate
1671
(gnutls.library.functions
1672
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1673
gnutls.library.constants
1674
.GNUTLS_OPENPGP_FMT_RAW))
1895
gnutls.library.functions.gnutls_openpgp_crt_import(
1896
crt, ctypes.byref(datum),
1897
gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)
1675
1898
# Verify the self signature in the key
1676
1899
crtverify = ctypes.c_uint()
1677
(gnutls.library.functions
1678
.gnutls_openpgp_crt_verify_self(crt, 0,
1679
ctypes.byref(crtverify)))
1900
gnutls.library.functions.gnutls_openpgp_crt_verify_self(
1901
crt, 0, ctypes.byref(crtverify))
1680
1902
if crtverify.value != 0:
1681
1903
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1682
raise (gnutls.errors.CertificateSecurityError
1904
raise gnutls.errors.CertificateSecurityError(
1684
1906
# New buffer for the fingerprint
1685
1907
buf = ctypes.create_string_buffer(20)
1686
1908
buf_len = ctypes.c_size_t()
1687
1909
# Get the fingerprint from the certificate into the buffer
1688
(gnutls.library.functions
1689
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1690
ctypes.byref(buf_len)))
1910
gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint(
1911
crt, ctypes.byref(buf), ctypes.byref(buf_len))
1691
1912
# Deinit the certificate
1692
1913
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1693
1914
# Convert the buffer to a Python bytestring
1743
1965
interface: None or a network interface name (string)
1744
1966
use_ipv6: Boolean; to use IPv6 or not
1746
1969
def __init__(self, server_address, RequestHandlerClass,
1747
interface=None, use_ipv6=True):
1973
"""If socketfd is set, use that file descriptor instead of
1974
creating a new one with socket.socket().
1748
1976
self.interface = interface
1750
1978
self.address_family = socket.AF_INET6
1979
if socketfd is not None:
1980
# Save the file descriptor
1981
self.socketfd = socketfd
1982
# Save the original socket.socket() function
1983
self.socket_socket = socket.socket
1984
# To implement --socket, we monkey patch socket.socket.
1986
# (When socketserver.TCPServer is a new-style class, we
1987
# could make self.socket into a property instead of monkey
1988
# patching socket.socket.)
1990
# Create a one-time-only replacement for socket.socket()
1991
@functools.wraps(socket.socket)
1992
def socket_wrapper(*args, **kwargs):
1993
# Restore original function so subsequent calls are
1995
socket.socket = self.socket_socket
1996
del self.socket_socket
1997
# This time only, return a new socket object from the
1998
# saved file descriptor.
1999
return socket.fromfd(self.socketfd, *args, **kwargs)
2000
# Replace socket.socket() function with wrapper
2001
socket.socket = socket_wrapper
2002
# The socketserver.TCPServer.__init__ will call
2003
# socket.socket(), which might be our replacement,
2004
# socket_wrapper(), if socketfd was set.
1751
2005
socketserver.TCPServer.__init__(self, server_address,
1752
2006
RequestHandlerClass)
1753
2008
def server_bind(self):
1754
2009
"""This overrides the normal server_bind() function
1755
2010
to bind to an interface if one was specified, and also NOT to
2170
def rfc3339_duration_to_delta(duration):
2171
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2173
>>> rfc3339_duration_to_delta("P7D")
2174
datetime.timedelta(7)
2175
>>> rfc3339_duration_to_delta("PT60S")
2176
datetime.timedelta(0, 60)
2177
>>> rfc3339_duration_to_delta("PT60M")
2178
datetime.timedelta(0, 3600)
2179
>>> rfc3339_duration_to_delta("PT24H")
2180
datetime.timedelta(1)
2181
>>> rfc3339_duration_to_delta("P1W")
2182
datetime.timedelta(7)
2183
>>> rfc3339_duration_to_delta("PT5M30S")
2184
datetime.timedelta(0, 330)
2185
>>> rfc3339_duration_to_delta("P1DT3M20S")
2186
datetime.timedelta(1, 200)
2189
# Parsing an RFC 3339 duration with regular expressions is not
2190
# possible - there would have to be multiple places for the same
2191
# values, like seconds. The current code, while more esoteric, is
2192
# cleaner without depending on a parsing library. If Python had a
2193
# built-in library for parsing we would use it, but we'd like to
2194
# avoid excessive use of external libraries.
2196
# New type for defining tokens, syntax, and semantics all-in-one
2197
Token = collections.namedtuple("Token", (
2198
"regexp", # To match token; if "value" is not None, must have
2199
# a "group" containing digits
2200
"value", # datetime.timedelta or None
2201
"followers")) # Tokens valid after this token
2202
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2203
# the "duration" ABNF definition in RFC 3339, Appendix A.
2204
token_end = Token(re.compile(r"$"), None, frozenset())
2205
token_second = Token(re.compile(r"(\d+)S"),
2206
datetime.timedelta(seconds=1),
2207
frozenset((token_end, )))
2208
token_minute = Token(re.compile(r"(\d+)M"),
2209
datetime.timedelta(minutes=1),
2210
frozenset((token_second, token_end)))
2211
token_hour = Token(re.compile(r"(\d+)H"),
2212
datetime.timedelta(hours=1),
2213
frozenset((token_minute, token_end)))
2214
token_time = Token(re.compile(r"T"),
2216
frozenset((token_hour, token_minute,
2218
token_day = Token(re.compile(r"(\d+)D"),
2219
datetime.timedelta(days=1),
2220
frozenset((token_time, token_end)))
2221
token_month = Token(re.compile(r"(\d+)M"),
2222
datetime.timedelta(weeks=4),
2223
frozenset((token_day, token_end)))
2224
token_year = Token(re.compile(r"(\d+)Y"),
2225
datetime.timedelta(weeks=52),
2226
frozenset((token_month, token_end)))
2227
token_week = Token(re.compile(r"(\d+)W"),
2228
datetime.timedelta(weeks=1),
2229
frozenset((token_end, )))
2230
token_duration = Token(re.compile(r"P"), None,
2231
frozenset((token_year, token_month,
2232
token_day, token_time,
2234
# Define starting values
2235
value = datetime.timedelta() # Value so far
2237
followers = frozenset((token_duration, )) # Following valid tokens
2238
s = duration # String left to parse
2239
# Loop until end token is found
2240
while found_token is not token_end:
2241
# Search for any currently valid tokens
2242
for token in followers:
2243
match = token.regexp.match(s)
2244
if match is not None:
2246
if token.value is not None:
2247
# Value found, parse digits
2248
factor = int(match.group(1), 10)
2249
# Add to value so far
2250
value += factor * token.value
2251
# Strip token from string
2252
s = token.regexp.sub("", s, 1)
2255
# Set valid next tokens
2256
followers = found_token.followers
2259
# No currently valid tokens were found
2260
raise ValueError("Invalid RFC 3339 duration: {!r}"
1920
2266
def string_to_delta(interval):
1921
2267
"""Parse a string and return a datetime.timedelta
2036
2397
"debug": "False",
2038
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2399
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2400
":+SIGN-RSA-SHA224:+SIGN-RSA-RMD160",
2039
2401
"servicename": "Mandos",
2040
2402
"use_dbus": "True",
2041
2403
"use_ipv6": "True",
2042
2404
"debuglevel": "",
2043
2405
"restore": "True",
2044
"statedir": "/var/lib/mandos"
2407
"statedir": "/var/lib/mandos",
2408
"foreground": "False",
2047
2412
# Parse config file for server-global settings
2048
2413
server_config = configparser.SafeConfigParser(server_defaults)
2049
2414
del server_defaults
2050
server_config.read(os.path.join(options.configdir,
2415
server_config.read(os.path.join(options.configdir, "mandos.conf"))
2052
2416
# Convert the SafeConfigParser object to a dict
2053
2417
server_settings = server_config.defaults()
2054
2418
# Use the appropriate methods on the non-string config options
2055
for option in ("debug", "use_dbus", "use_ipv6"):
2419
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
2056
2420
server_settings[option] = server_config.getboolean("DEFAULT",
2058
2422
if server_settings["port"]:
2059
2423
server_settings["port"] = server_config.getint("DEFAULT",
2425
if server_settings["socket"]:
2426
server_settings["socket"] = server_config.getint("DEFAULT",
2428
# Later, stdin will, and stdout and stderr might, be dup'ed
2429
# over with an opened os.devnull. But we don't want this to
2430
# happen with a supplied network socket.
2431
if 0 <= server_settings["socket"] <= 2:
2432
server_settings["socket"] = os.dup(server_settings
2061
2434
del server_config
2063
2436
# Override the settings from the config file with command line
2064
2437
# options, if set.
2065
2438
for option in ("interface", "address", "port", "debug",
2066
"priority", "servicename", "configdir",
2067
"use_dbus", "use_ipv6", "debuglevel", "restore",
2439
"priority", "servicename", "configdir", "use_dbus",
2440
"use_ipv6", "debuglevel", "restore", "statedir",
2441
"socket", "foreground", "zeroconf"):
2069
2442
value = getattr(options, option)
2070
2443
if value is not None:
2071
2444
server_settings[option] = value
2073
2446
# Force all strings to be unicode
2074
2447
for option in server_settings.keys():
2075
if type(server_settings[option]) is str:
2076
server_settings[option] = unicode(server_settings[option])
2448
if isinstance(server_settings[option], bytes):
2449
server_settings[option] = (server_settings[option]
2451
# Force all boolean options to be boolean
2452
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2453
"foreground", "zeroconf"):
2454
server_settings[option] = bool(server_settings[option])
2455
# Debug implies foreground
2456
if server_settings["debug"]:
2457
server_settings["foreground"] = True
2077
2458
# Now we have our good server settings in "server_settings"
2079
2460
##################################################################
2462
if (not server_settings["zeroconf"]
2463
and not (server_settings["port"]
2464
or server_settings["socket"] != "")):
2465
parser.error("Needs port or socket to work without Zeroconf")
2081
2467
# For convenience
2082
2468
debug = server_settings["debug"]
2083
2469
debuglevel = server_settings["debuglevel"]
2110
2498
global mandos_dbus_service
2111
2499
mandos_dbus_service = None
2113
tcp_server = MandosServer((server_settings["address"],
2114
server_settings["port"]),
2116
interface=(server_settings["interface"]
2120
server_settings["priority"],
2123
pidfilename = "/var/run/mandos.pid"
2502
if server_settings["socket"] != "":
2503
socketfd = server_settings["socket"]
2504
tcp_server = MandosServer(
2505
(server_settings["address"], server_settings["port"]),
2507
interface=(server_settings["interface"] or None),
2509
gnutls_priority=server_settings["priority"],
2513
pidfilename = "/run/mandos.pid"
2514
if not os.path.isdir("/run/."):
2515
pidfilename = "/var/run/mandos.pid"
2125
pidfile = open(pidfilename, "w")
2127
logger.error("Could not open file %r", pidfilename)
2518
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2519
except IOError as e:
2520
logger.error("Could not open file %r", pidfilename,
2130
uid = pwd.getpwnam("_mandos").pw_uid
2131
gid = pwd.getpwnam("_mandos").pw_gid
2523
for name in ("_mandos", "mandos", "nobody"):
2134
uid = pwd.getpwnam("mandos").pw_uid
2135
gid = pwd.getpwnam("mandos").pw_gid
2525
uid = pwd.getpwnam(name).pw_uid
2526
gid = pwd.getpwnam(name).pw_gid
2136
2528
except KeyError:
2138
uid = pwd.getpwnam("nobody").pw_uid
2139
gid = pwd.getpwnam("nobody").pw_gid
2146
2536
except OSError as error:
2147
if error[0] != errno.EPERM:
2537
if error.errno != errno.EPERM:
2151
2541
# Enable all possible GnuTLS debugging
2158
2548
def debug_gnutls(level, string):
2159
2549
logger.debug("GnuTLS: %s", string[:-1])
2161
(gnutls.library.functions
2162
.gnutls_global_set_log_function(debug_gnutls))
2551
gnutls.library.functions.gnutls_global_set_log_function(
2164
2554
# Redirect stdin so all checkers get /dev/null
2165
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2555
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2166
2556
os.dup2(null, sys.stdin.fileno())
2170
2560
# Need to fork before connecting to D-Bus
2172
2562
# Close all input and output, do double fork, etc.
2565
# multiprocessing will use threads, so before we use gobject we
2566
# need to inform gobject that threads will be used.
2175
2567
gobject.threads_init()
2177
2569
global main_loop
2178
2570
# From the Avahi example code
2179
DBusGMainLoop(set_as_default=True )
2571
DBusGMainLoop(set_as_default=True)
2180
2572
main_loop = gobject.MainLoop()
2181
2573
bus = dbus.SystemBus()
2182
2574
# End of Avahi example code
2185
2577
bus_name = dbus.service.BusName("se.recompile.Mandos",
2186
bus, do_not_queue=True)
2187
old_bus_name = (dbus.service.BusName
2188
("se.bsnet.fukt.Mandos", bus,
2190
except dbus.exceptions.NameExistsException as e:
2191
logger.error(unicode(e) + ", disabling D-Bus")
2580
old_bus_name = dbus.service.BusName(
2581
"se.bsnet.fukt.Mandos", bus,
2583
except dbus.exceptions.DBusException as e:
2584
logger.error("Disabling D-Bus:", exc_info=e)
2192
2585
use_dbus = False
2193
2586
server_settings["use_dbus"] = False
2194
2587
tcp_server.use_dbus = False
2195
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2196
service = AvahiServiceToSyslog(name =
2197
server_settings["servicename"],
2198
servicetype = "_mandos._tcp",
2199
protocol = protocol, bus = bus)
2200
if server_settings["interface"]:
2201
service.interface = (if_nametoindex
2202
(str(server_settings["interface"])))
2589
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2590
service = AvahiServiceToSyslog(
2591
name = server_settings["servicename"],
2592
servicetype = "_mandos._tcp",
2593
protocol = protocol,
2595
if server_settings["interface"]:
2596
service.interface = if_nametoindex(
2597
server_settings["interface"].encode("utf-8"))
2204
2599
global multiprocessing_manager
2205
2600
multiprocessing_manager = multiprocessing.Manager()
2207
2602
client_class = Client
2209
client_class = functools.partial(ClientDBusTransitional,
2604
client_class = functools.partial(ClientDBus, bus = bus)
2212
2606
client_settings = Client.config_parser(client_config)
2213
2607
old_client_settings = {}
2214
2608
clients_data = {}
2610
# This is used to redirect stdout and stderr for checker processes
2612
wnull = open(os.devnull, "w") # A writable /dev/null
2613
# Only used if server is running in foreground but not in debug
2615
if debug or not foreground:
2216
2618
# Get client data and settings from last running state.
2217
2619
if server_settings["restore"]:
2219
2621
with open(stored_state_path, "rb") as stored_state:
2220
clients_data, old_client_settings = (pickle.load
2622
clients_data, old_client_settings = pickle.load(
2222
2624
os.remove(stored_state_path)
2223
2625
except IOError as e:
2224
logger.warning("Could not load persistent state: {0}"
2226
if e.errno != errno.ENOENT:
2626
if e.errno == errno.ENOENT:
2627
logger.warning("Could not load persistent state:"
2628
" {}".format(os.strerror(e.errno)))
2630
logger.critical("Could not load persistent state:",
2228
2633
except EOFError as e:
2229
2634
logger.warning("Could not load persistent state: "
2230
"EOFError: {0}".format(e))
2232
2638
with PGPEngine() as pgp:
2233
for client_name, client in clients_data.iteritems():
2639
for client_name, client in clients_data.items():
2640
# Skip removed clients
2641
if client_name not in client_settings:
2234
2644
# Decide which value to use after restoring saved state.
2235
2645
# We have three different values: Old config file,
2236
2646
# new config file, and saved state.
2241
2651
# For each value in new config, check if it
2242
2652
# differs from the old config value (Except for
2243
2653
# the "secret" attribute)
2244
if (name != "secret" and
2245
value != old_client_settings[client_name]
2654
if (name != "secret"
2656
old_client_settings[client_name][name])):
2247
2657
client[name] = value
2248
2658
except KeyError:
2251
2661
# Clients who has passed its expire date can still be
2252
# enabled if its last checker was successful. Clients
2253
# whose checker failed before we stored its state is
2254
# assumed to have failed all checkers during downtime.
2662
# enabled if its last checker was successful. A Client
2663
# whose checker succeeded before we stored its state is
2664
# assumed to have successfully run all checkers during
2255
2666
if client["enabled"]:
2256
2667
if datetime.datetime.utcnow() >= client["expires"]:
2257
2668
if not client["last_checked_ok"]:
2258
2669
logger.warning(
2259
"disabling client {0} - Client never "
2260
"performed a successfull checker"
2261
.format(client["name"]))
2670
"disabling client {} - Client never "
2671
"performed a successful checker".format(
2262
2673
client["enabled"] = False
2263
2674
elif client["last_checker_status"] != 0:
2264
2675
logger.warning(
2265
"disabling client {0} - Client "
2266
"last checker failed with error code {1}"
2267
.format(client["name"],
2268
client["last_checker_status"]))
2676
"disabling client {} - Client last"
2677
" checker failed with error code"
2680
client["last_checker_status"]))
2269
2681
client["enabled"] = False
2271
client["expires"] = (datetime.datetime
2273
+ client["timeout"])
2683
client["expires"] = (
2684
datetime.datetime.utcnow()
2685
+ client["timeout"])
2274
2686
logger.debug("Last checker succeeded,"
2275
" keeping {0} enabled"
2276
.format(client["name"]))
2687
" keeping {} enabled".format(
2278
client["secret"] = (
2279
pgp.decrypt(client["encrypted_secret"],
2280
client_settings[client_name]
2690
client["secret"] = pgp.decrypt(
2691
client["encrypted_secret"],
2692
client_settings[client_name]["secret"])
2282
2693
except PGPError:
2283
2694
# If decryption fails, we use secret from new settings
2284
logger.debug("Failed to decrypt {0} old secret"
2285
.format(client_name))
2286
client["secret"] = (
2287
client_settings[client_name]["secret"])
2695
logger.debug("Failed to decrypt {} old secret".format(
2697
client["secret"] = (client_settings[client_name]
2290
2700
# Add/remove clients based on new changes made to config
2291
2701
for client_name in (set(old_client_settings)
2294
2704
for client_name in (set(client_settings)
2295
2705
- set(old_client_settings)):
2296
2706
clients_data[client_name] = client_settings[client_name]
2298
# Create clients all clients
2299
for client_name, client in clients_data.iteritems():
2708
# Create all client objects
2709
for client_name, client in clients_data.items():
2300
2710
tcp_server.clients[client_name] = client_class(
2301
name = client_name, settings = client)
2713
server_settings = server_settings)
2303
2715
if not tcp_server.clients:
2304
2716
logger.warning("No clients defined")
2310
pidfile.write(str(pid) + "\n".encode("utf-8"))
2313
logger.error("Could not write to file %r with PID %d",
2316
# "pidfile" was never created
2719
if pidfile is not None:
2723
print(pid, file=pidfile)
2725
logger.error("Could not write to file %r with PID %d",
2318
2728
del pidfilename
2319
signal.signal(signal.SIGINT, signal.SIG_IGN)
2321
2730
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2322
2731
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2325
class MandosDBusService(dbus.service.Object):
2735
@alternate_dbus_interfaces(
2736
{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
2737
class MandosDBusService(DBusObjectWithProperties):
2326
2738
"""A D-Bus proxy object"""
2327
2740
def __init__(self):
2328
2741
dbus.service.Object.__init__(self, bus, "/")
2329
2743
_interface = "se.recompile.Mandos"
2745
@dbus_interface_annotations(_interface)
2748
"org.freedesktop.DBus.Property.EmitsChangedSignal":
2331
2751
@dbus.service.signal(_interface, signature="o")
2332
2752
def ClientAdded(self, objpath):