101
85
except ImportError:
102
86
SO_BINDTODEVICE = None
104
if sys.version_info.major == 2:
108
89
stored_state_file = "clients.pickle"
110
91
logger = logging.getLogger()
92
syslogger = (logging.handlers.SysLogHandler
93
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
94
address = str("/dev/log")))
114
if_nametoindex = ctypes.cdll.LoadLibrary(
115
ctypes.util.find_library("c")).if_nametoindex
97
if_nametoindex = (ctypes.cdll.LoadLibrary
98
(ctypes.util.find_library("c"))
116
100
except (OSError, AttributeError):
118
101
def if_nametoindex(interface):
119
102
"Get an interface index the hard way, i.e. using fcntl()"
120
103
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
121
104
with contextlib.closing(socket.socket()) as s:
122
105
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
123
struct.pack(b"16s16x", interface))
124
interface_index = struct.unpack("I", ifreq[16:20])[0]
106
struct.pack(str("16s16x"),
108
interface_index = struct.unpack(str("I"),
125
110
return interface_index
128
def initlogger(debug, level=logging.WARNING):
113
def initlogger(level=logging.WARNING):
129
114
"""init logger and add loglevel"""
132
syslogger = (logging.handlers.SysLogHandler(
133
facility = logging.handlers.SysLogHandler.LOG_DAEMON,
134
address = "/dev/log"))
135
116
syslogger.setFormatter(logging.Formatter
136
117
('Mandos [%(process)d]: %(levelname)s:'
138
119
logger.addHandler(syslogger)
141
console = logging.StreamHandler()
142
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
146
logger.addHandler(console)
121
console = logging.StreamHandler()
122
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
126
logger.addHandler(console)
147
127
logger.setLevel(level)
189
169
def password_encode(self, password):
190
170
# Passphrase can not be empty and can not contain newlines or
191
171
# NUL bytes. So we prefix it and hex encode it.
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"))
172
return b"mandos" + binascii.hexlify(password)
200
174
def encrypt(self, data, password):
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:
175
self.gnupg.passphrase = self.password_encode(password)
176
with open(os.devnull) as devnull:
178
proc = self.gnupg.run(['--symmetric'],
179
create_fhs=['stdin', 'stdout'],
180
attach_fhs={'stderr': devnull})
181
with contextlib.closing(proc.handles['stdin']) as f:
183
with contextlib.closing(proc.handles['stdout']) as f:
184
ciphertext = f.read()
188
self.gnupg.passphrase = None
216
189
return ciphertext
218
191
def decrypt(self, data, password):
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:
192
self.gnupg.passphrase = self.password_encode(password)
193
with open(os.devnull) as devnull:
195
proc = self.gnupg.run(['--decrypt'],
196
create_fhs=['stdin', 'stdout'],
197
attach_fhs={'stderr': devnull})
198
with contextlib.closing(proc.handles['stdin'] ) as f:
200
with contextlib.closing(proc.handles['stdout']) as f:
201
decrypted_plaintext = f.read()
205
self.gnupg.passphrase = None
234
206
return decrypted_plaintext
237
210
class AvahiError(Exception):
238
211
def __init__(self, value, *args, **kwargs):
239
212
self.value = value
240
return super(AvahiError, self).__init__(value, *args,
213
super(AvahiError, self).__init__(value, *args, **kwargs)
214
def __unicode__(self):
215
return unicode(repr(self.value))
244
217
class AvahiServiceError(AvahiError):
248
220
class AvahiGroupError(AvahiError):
475
413
last_checked_ok: datetime.datetime(); (UTC) or None
476
414
last_checker_status: integer between 0 and 255 reflecting exit
477
415
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
481
417
last_enabled: datetime.datetime(); (UTC) or None
482
418
name: string; from the config file, used in log messages and
483
419
D-Bus identifiers
484
420
secret: bytestring; sent verbatim (over TLS) to client
485
421
timeout: datetime.timedelta(); How long from last_checked_ok
486
422
until this client is disabled
487
extended_timeout: extra long timeout when secret has been sent
423
extended_timeout: extra long timeout when password has been sent
488
424
runtime_expansions: Allowed attributes for runtime expansion.
489
425
expires: datetime.datetime(); time (UTC) when a client will be
490
426
disabled, or None
491
server_settings: The server_settings dict from main()
494
429
runtime_expansions = ("approval_delay", "approval_duration",
495
"created", "enabled", "expires",
496
"fingerprint", "host", "interval",
497
"last_approval_request", "last_checked_ok",
430
"created", "enabled", "fingerprint",
431
"host", "interval", "last_checked_ok",
498
432
"last_enabled", "name", "timeout")
501
"extended_timeout": "PT15M",
503
"checker": "fping -q -- %%(host)s",
505
"approval_delay": "PT0S",
506
"approval_duration": "PT1S",
507
"approved_by_default": "True",
433
client_defaults = { "timeout": "5m",
434
"extended_timeout": "15m",
436
"checker": "fping -q -- %%(host)s",
438
"approval_delay": "0s",
439
"approval_duration": "1s",
440
"approved_by_default": "True",
444
def timeout_milliseconds(self):
445
"Return the 'timeout' attribute in milliseconds"
446
return timedelta_to_milliseconds(self.timeout)
448
def extended_timeout_milliseconds(self):
449
"Return the 'extended_timeout' attribute in milliseconds"
450
return timedelta_to_milliseconds(self.extended_timeout)
452
def interval_milliseconds(self):
453
"Return the 'interval' attribute in milliseconds"
454
return timedelta_to_milliseconds(self.interval)
456
def approval_delay_milliseconds(self):
457
return timedelta_to_milliseconds(self.approval_delay)
512
460
def config_parser(config):
513
"""Construct a new dict of client settings of this form:
461
""" Construct a new dict of client settings of this form:
514
462
{ client_name: {setting_name: value, ...}, ...}
515
with exceptions for any special settings as defined above.
516
NOTE: Must be a pure function. Must return the same result
517
value given the same arguments.
463
with exceptions for any special settings as defined above"""
520
465
for client_name in config.sections():
521
466
section = dict(config.items(client_name))
554
495
client["checker_command"] = section["checker"]
555
496
client["last_approval_request"] = None
556
497
client["last_checked_ok"] = None
557
client["last_checker_status"] = -2
498
client["last_checker_status"] = None
499
if client["enabled"]:
500
client["last_enabled"] = datetime.datetime.utcnow()
501
client["expires"] = (datetime.datetime.utcnow()
504
client["last_enabled"] = None
505
client["expires"] = None
561
def __init__(self, settings, name = None, server_settings=None):
510
def __init__(self, settings, name = None):
511
"""Note: the 'checker' key in 'config' sets the
512
'checker_command' attribute and *not* the 'checker'
563
if server_settings is None:
565
self.server_settings = server_settings
566
515
# adding all client settings
567
for setting, value in settings.items():
516
for setting, value in settings.iteritems():
568
517
setattr(self, setting, value)
571
if not hasattr(self, "last_enabled"):
572
self.last_enabled = datetime.datetime.utcnow()
573
if not hasattr(self, "expires"):
574
self.expires = (datetime.datetime.utcnow()
577
self.last_enabled = None
580
519
logger.debug("Creating client %r", self.name)
520
# Uppercase and remove spaces from fingerprint for later
521
# comparison purposes with return value from the fingerprint()
581
523
logger.debug(" Fingerprint: %s", self.fingerprint)
582
self.created = settings.get("created",
583
datetime.datetime.utcnow())
524
self.created = settings.get("created", datetime.datetime.utcnow())
585
526
# attributes specific for this server instance
586
527
self.checker = None
587
528
self.checker_initiator_tag = None
644
588
def init_checker(self):
645
589
# Schedule a new checker to be started an 'interval' from now,
646
590
# and every interval from then on.
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),
591
self.checker_initiator_tag = (gobject.timeout_add
592
(self.interval_milliseconds(),
652
594
# Schedule a disable() when 'timeout' has passed
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)
595
self.disable_initiator_tag = (gobject.timeout_add
596
(self.timeout_milliseconds(),
657
598
# Also start a new checker *right now*.
658
599
self.start_checker()
660
def checker_callback(self, source, condition, connection,
601
def checker_callback(self, pid, condition, command):
662
602
"""The checker has completed, so take appropriate actions."""
663
603
self.checker_callback_tag = None
664
604
self.checker = None
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
605
if os.WIFEXITED(condition):
606
self.last_checker_status = os.WEXITSTATUS(condition)
672
607
if self.last_checker_status == 0:
673
608
logger.info("Checker for %(name)s succeeded",
675
610
self.checked_ok()
677
logger.info("Checker for %(name)s failed", vars(self))
612
logger.info("Checker for %(name)s failed",
679
615
self.last_checker_status = -1
680
self.last_checker_signal = -returncode
681
616
logger.warning("Checker for %(name)s crashed?",
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."""
619
def checked_ok(self, timeout=None):
620
"""Bump up the timeout for this client.
622
This should only be called when the client has been seen,
694
625
if timeout is None:
695
626
timeout = self.timeout
627
self.last_checked_ok = datetime.datetime.utcnow()
696
628
if self.disable_initiator_tag is not None:
697
629
gobject.source_remove(self.disable_initiator_tag)
698
self.disable_initiator_tag = None
699
630
if getattr(self, "enabled", False):
700
self.disable_initiator_tag = gobject.timeout_add(
701
int(timeout.total_seconds() * 1000), self.disable)
631
self.disable_initiator_tag = (gobject.timeout_add
632
(timedelta_to_milliseconds
633
(timeout), self.disable))
702
634
self.expires = datetime.datetime.utcnow() + timeout
704
636
def need_approval(self):
710
642
If a checker already exists, leave it running and do
712
644
# The reason for not killing a running checker is that if we
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
645
# did that, then if a checker (for some reason) started
646
# running slowly and taking more than 'interval' time, the
647
# client would inevitably timeout, since no checker would get
648
# a chance to run to completion. If we instead leave running
717
649
# checkers alone, the checker would have to take more time
718
650
# than 'timeout' for the client to be disabled, which is as it
721
if self.checker is not None and not self.checker.is_alive():
722
logger.warning("Checker was not alive; joining")
653
# If a checker exists, make sure it is not a zombie
655
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
656
except (AttributeError, OSError) as error:
657
if (isinstance(error, OSError)
658
and error.errno != errno.ECHILD):
662
logger.warning("Checker was a zombie")
663
gobject.source_remove(self.checker_callback_tag)
664
self.checker_callback(pid, status,
665
self.current_checker_command)
725
666
# Start a new checker if needed
726
667
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 }
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
669
# In case checker_command has exactly one % operator
670
command = self.checker_command % self.host
672
# Escape attributes for the shell
673
escaped_attrs = dict(
675
re.escape(unicode(str(getattr(self, attr, "")),
679
self.runtime_expansions)
682
command = self.checker_command % escaped_attrs
683
except TypeError as error:
684
logger.error('Could not format string "%s":'
685
' %s', self.checker_command, error)
686
return True # Try again later
738
687
self.current_checker_command = command
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)
689
logger.info("Starting checker %r for %s",
691
# We don't need to redirect stdout and stderr, since
692
# in normal mode, that is already done by daemon(),
693
# and in debug mode we don't want to. (Stdin is
694
# always replaced by /dev/null.)
695
self.checker = subprocess.Popen(command,
698
self.checker_callback_tag = (gobject.child_watch_add
700
self.checker_callback,
702
# The checker may have completed before the gobject
703
# watch was added. Check for this.
704
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
706
gobject.source_remove(self.checker_callback_tag)
707
self.checker_callback(pid, status, command)
708
except OSError as error:
709
logger.error("Failed to start subprocess: %s",
764
711
# Re-run this periodically if run by gobject.timeout_add
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),
791
def _is_dbus_property(obj):
792
return getattr(obj, "_dbus_is_property", False)
890
def _get_all_dbus_things(self, thing):
794
def _get_all_dbus_properties(self):
891
795
"""Returns a generator of (name, attribute) pairs
893
return ((getattr(athing.__get__(self), "_dbus_name", name),
894
athing.__get__(self))
797
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
895
798
for cls in self.__class__.__mro__
897
inspect.getmembers(cls, self._is_dbus_thing(thing)))
800
inspect.getmembers(cls, self._is_dbus_property))
899
802
def _get_dbus_property(self, interface_name, property_name):
900
803
"""Returns a bound method if one exists which is a D-Bus
901
804
property with the specified name and interface.
903
for cls in self.__class__.__mro__:
904
for name, value in inspect.getmembers(
905
cls, self._is_dbus_thing("property")):
806
for cls in self.__class__.__mro__:
807
for name, value in (inspect.getmembers
808
(cls, self._is_dbus_property)):
906
809
if (value._dbus_name == property_name
907
810
and value._dbus_interface == interface_name):
908
811
return value.__get__(self)
910
813
# No such property
911
raise DBusPropertyNotFound("{}:{}.{}".format(
912
self.dbus_object_path, interface_name, property_name))
814
raise DBusPropertyNotFound(self.dbus_object_path + ":"
815
+ interface_name + "."
914
@dbus.service.method(dbus.PROPERTIES_IFACE,
818
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
916
819
out_signature="v")
917
820
def Get(self, interface_name, property_name):
918
821
"""Standard D-Bus property Get() method, see D-Bus standard.
965
865
if not hasattr(value, "variant_level"):
966
866
properties[name] = value
968
properties[name] = type(value)(
969
value, variant_level = value.variant_level + 1)
868
properties[name] = type(value)(value, variant_level=
869
value.variant_level+1)
970
870
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
980
872
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
981
873
out_signature="s",
982
874
path_keyword='object_path',
983
875
connection_keyword='connection')
984
876
def Introspect(self, object_path, connection):
985
"""Overloading of standard D-Bus method.
987
Inserts property tags and interface annotation tags.
877
"""Standard D-Bus method, overloaded to insert property tags.
989
879
xmlstring = dbus.service.Object.Introspect(self, object_path,
992
882
document = xml.dom.minidom.parseString(xmlstring)
994
883
def make_tag(document, name, prop):
995
884
e = document.createElement("property")
996
885
e.setAttribute("name", name)
997
886
e.setAttribute("type", prop._dbus_signature)
998
887
e.setAttribute("access", prop._dbus_access)
1001
889
for if_tag in document.getElementsByTagName("interface"):
1003
890
for tag in (make_tag(document, name, prop)
1005
in self._get_all_dbus_things("property")
892
in self._get_all_dbus_properties()
1006
893
if prop._dbus_interface
1007
894
== if_tag.getAttribute("name")):
1008
895
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)
1038
896
# Add the names to the return values for the
1039
897
# "org.freedesktop.DBus.Properties" methods
1040
898
if (if_tag.getAttribute("name")
1055
913
except (AttributeError, xml.dom.DOMException,
1056
914
xml.parsers.expat.ExpatError) as error:
1057
915
logger.error("Failed to override Introspection method",
1059
917
return xmlstring
1062
def datetime_to_dbus(dt, variant_level=0):
920
def datetime_to_dbus (dt, variant_level=0):
1063
921
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1065
923
return dbus.String("", variant_level = variant_level)
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).
924
return dbus.String(dt.isoformat(),
925
variant_level=variant_level)
928
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
930
"""Applied to an empty subclass of a D-Bus object, this metaclass
931
will add additional D-Bus attributes matching a certain pattern.
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):
933
def __new__(mcs, name, bases, attr):
934
# Go through all the base classes which could have D-Bus
935
# methods, signals, or properties in them
936
for base in (b for b in bases
937
if issubclass(b, dbus.service.Object)):
938
# Go though all attributes of the base class
939
for attrname, attribute in inspect.getmembers(base):
1100
940
# Ignore non-D-Bus attributes, and D-Bus attributes
1101
941
# with the wrong interface name
1102
942
if (not hasattr(attribute, "_dbus_interface")
1103
or not attribute._dbus_interface.startswith(
1104
orig_interface_name)):
943
or not attribute._dbus_interface
944
.startswith("se.recompile.Mandos")):
1106
946
# Create an alternate D-Bus interface name based on
1107
947
# the current name
1108
alt_interface = attribute._dbus_interface.replace(
1109
orig_interface_name, alt_interface_name)
1110
interface_names.add(alt_interface)
948
alt_interface = (attribute._dbus_interface
949
.replace("se.recompile.Mandos",
950
"se.bsnet.fukt.Mandos"))
1111
951
# Is this a D-Bus signal?
1112
952
if getattr(attribute, "_dbus_is_signal", False):
1113
if sys.version_info.major == 2:
1114
# Extract the original non-method undecorated
1115
# function by black magic
1116
nonmethod_func = (dict(
953
# Extract the original non-method function by
955
nonmethod_func = (dict(
1117
956
zip(attribute.func_code.co_freevars,
1118
attribute.__closure__))
1119
["func"].cell_contents)
1121
nonmethod_func = attribute
957
attribute.__closure__))["func"]
1122
959
# Create a new, but exactly alike, function
1123
960
# object, and decorate it to be a new D-Bus signal
1124
961
# with the alternate D-Bus interface name
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:
962
new_function = (dbus.service.signal
964
attribute._dbus_signature)
966
nonmethod_func.func_code,
967
nonmethod_func.func_globals,
968
nonmethod_func.func_name,
969
nonmethod_func.func_defaults,
970
nonmethod_func.func_closure)))
1148
971
# Define a creator of a function to call both the
1149
# original and alternate functions, so both the
1150
# original and alternate signals gets sent when
1151
# the function is called
972
# old and new functions, so both the old and new
973
# signals gets sent when the function is called
1152
974
def fixscope(func1, func2):
1153
975
"""This function is a scope container to pass
1154
976
func1 and func2 to the "call_both" function
1155
977
outside of its arguments"""
1157
978
def call_both(*args, **kwargs):
1158
979
"""This function will emit two D-Bus
1159
980
signals by calling func1 and func2"""
1160
981
func1(*args, **kwargs)
1161
982
func2(*args, **kwargs)
1163
983
return call_both
1164
984
# Create the "call_both" function and add it to
1166
attr[attrname] = fixscope(attribute, new_function)
986
attr[attrname] = fixscope(attribute,
1167
988
# Is this a D-Bus method?
1168
989
elif getattr(attribute, "_dbus_is_method", False):
1169
990
# Create a new, but exactly alike, function
1170
991
# object. Decorate it to be a new D-Bus method
1171
992
# with the alternate D-Bus interface name. Add it
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:
994
attr[attrname] = (dbus.service.method
996
attribute._dbus_in_signature,
997
attribute._dbus_out_signature)
999
(attribute.func_code,
1000
attribute.func_globals,
1001
attribute.func_name,
1002
attribute.func_defaults,
1003
attribute.func_closure)))
1189
1004
# Is this a D-Bus property?
1190
1005
elif getattr(attribute, "_dbus_is_property", False):
1191
1006
# Create a new, but exactly alike, function
1192
1007
# object, and decorate it to be a new D-Bus
1193
1008
# property with the alternate D-Bus interface
1194
1009
# name. Add it to the class.
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"})
1010
attr[attrname] = (dbus_service_property
1012
attribute._dbus_signature,
1013
attribute._dbus_access,
1015
._dbus_get_args_options
1018
(attribute.func_code,
1019
attribute.func_globals,
1020
attribute.func_name,
1021
attribute.func_defaults,
1022
attribute.func_closure)))
1023
return type.__new__(mcs, name, bases, attr)
1252
1026
class ClientDBus(Client, DBusObjectWithProperties):
1253
1027
"""A Client class using D-Bus
1325
1088
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1326
1089
last_enabled = notifychangeproperty(datetime_to_dbus,
1328
checker = notifychangeproperty(
1329
dbus.Boolean, "CheckerRunning",
1330
type_func = lambda checker: checker is not None)
1091
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1092
type_func = lambda checker:
1093
checker is not None)
1331
1094
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1332
1095
"LastCheckedOK")
1333
last_checker_status = notifychangeproperty(dbus.Int16,
1334
"LastCheckerStatus")
1335
1096
last_approval_request = notifychangeproperty(
1336
1097
datetime_to_dbus, "LastApprovalRequest")
1337
1098
approved_by_default = notifychangeproperty(dbus.Boolean,
1338
1099
"ApprovedByDefault")
1339
approval_delay = notifychangeproperty(
1340
dbus.UInt64, "ApprovalDelay",
1341
type_func = lambda td: td.total_seconds() * 1000)
1100
approval_delay = notifychangeproperty(dbus.UInt64,
1103
timedelta_to_milliseconds)
1342
1104
approval_duration = notifychangeproperty(
1343
1105
dbus.UInt64, "ApprovalDuration",
1344
type_func = lambda td: td.total_seconds() * 1000)
1106
type_func = timedelta_to_milliseconds)
1345
1107
host = notifychangeproperty(dbus.String, "Host")
1346
timeout = notifychangeproperty(
1347
dbus.UInt64, "Timeout",
1348
type_func = lambda td: td.total_seconds() * 1000)
1108
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1110
timedelta_to_milliseconds)
1349
1111
extended_timeout = notifychangeproperty(
1350
1112
dbus.UInt64, "ExtendedTimeout",
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)
1113
type_func = timedelta_to_milliseconds)
1114
interval = notifychangeproperty(dbus.UInt64,
1117
timedelta_to_milliseconds)
1355
1118
checker_command = notifychangeproperty(dbus.String, "Checker")
1356
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1357
invalidate_only=True)
1359
1120
del notifychangeproperty
1367
1128
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1368
1129
Client.__del__(self, *args, **kwargs)
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
1131
def checker_callback(self, pid, condition, command,
1133
self.checker_callback_tag = None
1135
if os.WIFEXITED(condition):
1136
exitstatus = os.WEXITSTATUS(condition)
1377
1137
# Emit D-Bus signal
1378
1138
self.CheckerCompleted(dbus.Int16(exitstatus),
1139
dbus.Int64(condition),
1380
1140
dbus.String(command))
1382
1142
# Emit D-Bus signal
1383
1143
self.CheckerCompleted(dbus.Int16(-1),
1385
self.last_checker_signal),
1144
dbus.Int64(condition),
1386
1145
dbus.String(command))
1147
return Client.checker_callback(self, pid, condition, command,
1389
1150
def start_checker(self, *args, **kwargs):
1390
old_checker_pid = getattr(self.checker, "pid", None)
1151
old_checker = self.checker
1152
if self.checker is not None:
1153
old_checker_pid = self.checker.pid
1155
old_checker_pid = None
1391
1156
r = Client.start_checker(self, *args, **kwargs)
1392
1157
# Only if new checker process was started
1393
1158
if (self.checker is not None
1590
1351
return datetime_to_dbus(self.last_approval_request)
1592
1353
# Timeout - property
1593
@dbus_service_property(_interface,
1354
@dbus_service_property(_interface, signature="t",
1595
1355
access="readwrite")
1596
1356
def Timeout_dbus_property(self, value=None):
1597
1357
if value is None: # get
1598
return dbus.UInt64(self.timeout.total_seconds() * 1000)
1599
old_timeout = self.timeout
1358
return dbus.UInt64(self.timeout_milliseconds())
1600
1359
self.timeout = datetime.timedelta(0, 0, 0, value)
1601
# Reschedule disabling
1603
now = datetime.datetime.utcnow()
1604
self.expires += self.timeout - old_timeout
1605
if self.expires <= now:
1606
# The timeout has passed
1609
if (getattr(self, "disable_initiator_tag", None)
1612
gobject.source_remove(self.disable_initiator_tag)
1613
self.disable_initiator_tag = gobject.timeout_add(
1614
int((self.expires - now).total_seconds() * 1000),
1360
if getattr(self, "disable_initiator_tag", None) is None:
1362
# Reschedule timeout
1363
gobject.source_remove(self.disable_initiator_tag)
1364
self.disable_initiator_tag = None
1366
time_to_die = timedelta_to_milliseconds((self
1371
if time_to_die <= 0:
1372
# The timeout has passed
1375
self.expires = (datetime.datetime.utcnow()
1376
+ datetime.timedelta(milliseconds =
1378
self.disable_initiator_tag = (gobject.timeout_add
1379
(time_to_die, self.disable))
1617
1381
# ExtendedTimeout - property
1618
@dbus_service_property(_interface,
1382
@dbus_service_property(_interface, signature="t",
1620
1383
access="readwrite")
1621
1384
def ExtendedTimeout_dbus_property(self, value=None):
1622
1385
if value is None: # get
1623
return dbus.UInt64(self.extended_timeout.total_seconds()
1386
return dbus.UInt64(self.extended_timeout_milliseconds())
1625
1387
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1627
1389
# Interval - property
1628
@dbus_service_property(_interface,
1390
@dbus_service_property(_interface, signature="t",
1630
1391
access="readwrite")
1631
1392
def Interval_dbus_property(self, value=None):
1632
1393
if value is None: # get
1633
return dbus.UInt64(self.interval.total_seconds() * 1000)
1394
return dbus.UInt64(self.interval_milliseconds())
1634
1395
self.interval = datetime.timedelta(0, 0, 0, value)
1635
1396
if getattr(self, "checker_initiator_tag", None) is None:
1637
1398
if self.enabled:
1638
1399
# Reschedule checker run
1639
1400
gobject.source_remove(self.checker_initiator_tag)
1640
self.checker_initiator_tag = gobject.timeout_add(
1641
value, self.start_checker)
1642
self.start_checker() # Start one now, too
1401
self.checker_initiator_tag = (gobject.timeout_add
1402
(value, self.start_checker))
1403
self.start_checker() # Start one now, too
1644
1405
# Checker - property
1645
@dbus_service_property(_interface,
1406
@dbus_service_property(_interface, signature="s",
1647
1407
access="readwrite")
1648
1408
def Checker_dbus_property(self, value=None):
1649
1409
if value is None: # get
1650
1410
return dbus.String(self.checker_command)
1651
self.checker_command = str(value)
1411
self.checker_command = unicode(value)
1653
1413
# CheckerRunning - property
1654
@dbus_service_property(_interface,
1414
@dbus_service_property(_interface, signature="b",
1656
1415
access="readwrite")
1657
1416
def CheckerRunning_dbus_property(self, value=None):
1658
1417
if value is None: # get
1883
1649
def fingerprint(openpgp):
1884
1650
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1885
1651
# New GnuTLS "datum" with the OpenPGP public key
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)))
1652
datum = (gnutls.library.types
1653
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1656
ctypes.c_uint(len(openpgp))))
1890
1657
# New empty GnuTLS certificate
1891
1658
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1892
gnutls.library.functions.gnutls_openpgp_crt_init(
1659
(gnutls.library.functions
1660
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
1894
1661
# Import the OpenPGP public key into the certificate
1895
gnutls.library.functions.gnutls_openpgp_crt_import(
1896
crt, ctypes.byref(datum),
1897
gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)
1662
(gnutls.library.functions
1663
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1664
gnutls.library.constants
1665
.GNUTLS_OPENPGP_FMT_RAW))
1898
1666
# Verify the self signature in the key
1899
1667
crtverify = ctypes.c_uint()
1900
gnutls.library.functions.gnutls_openpgp_crt_verify_self(
1901
crt, 0, ctypes.byref(crtverify))
1668
(gnutls.library.functions
1669
.gnutls_openpgp_crt_verify_self(crt, 0,
1670
ctypes.byref(crtverify)))
1902
1671
if crtverify.value != 0:
1903
1672
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1904
raise gnutls.errors.CertificateSecurityError(
1673
raise (gnutls.errors.CertificateSecurityError
1906
1675
# New buffer for the fingerprint
1907
1676
buf = ctypes.create_string_buffer(20)
1908
1677
buf_len = ctypes.c_size_t()
1909
1678
# Get the fingerprint from the certificate into the buffer
1910
gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint(
1911
crt, ctypes.byref(buf), ctypes.byref(buf_len))
1679
(gnutls.library.functions
1680
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1681
ctypes.byref(buf_len)))
1912
1682
# Deinit the certificate
1913
1683
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1914
1684
# Convert the buffer to a Python bytestring
1965
1734
interface: None or a network interface name (string)
1966
1735
use_ipv6: Boolean; to use IPv6 or not
1969
1737
def __init__(self, server_address, RequestHandlerClass,
1973
"""If socketfd is set, use that file descriptor instead of
1974
creating a new one with socket.socket().
1738
interface=None, use_ipv6=True):
1976
1739
self.interface = interface
1978
1741
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.
2005
1742
socketserver.TCPServer.__init__(self, server_address,
2006
1743
RequestHandlerClass)
2008
1744
def server_bind(self):
2009
1745
"""This overrides the normal server_bind() function
2010
1746
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}"
2266
1911
def string_to_delta(interval):
2267
1912
"""Parse a string and return a datetime.timedelta
2397
2027
"debug": "False",
2399
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2400
":+SIGN-DSA-SHA256",
2029
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2401
2030
"servicename": "Mandos",
2402
2031
"use_dbus": "True",
2403
2032
"use_ipv6": "True",
2404
2033
"debuglevel": "",
2405
2034
"restore": "True",
2407
"statedir": "/var/lib/mandos",
2408
"foreground": "False",
2035
"statedir": "/var/lib/mandos"
2412
2038
# Parse config file for server-global settings
2413
2039
server_config = configparser.SafeConfigParser(server_defaults)
2414
2040
del server_defaults
2415
server_config.read(os.path.join(options.configdir, "mandos.conf"))
2041
server_config.read(os.path.join(options.configdir,
2416
2043
# Convert the SafeConfigParser object to a dict
2417
2044
server_settings = server_config.defaults()
2418
2045
# Use the appropriate methods on the non-string config options
2419
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
2046
for option in ("debug", "use_dbus", "use_ipv6"):
2420
2047
server_settings[option] = server_config.getboolean("DEFAULT",
2422
2049
if server_settings["port"]:
2423
2050
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
2434
2052
del server_config
2436
2054
# Override the settings from the config file with command line
2437
2055
# options, if set.
2438
2056
for option in ("interface", "address", "port", "debug",
2439
"priority", "servicename", "configdir", "use_dbus",
2440
"use_ipv6", "debuglevel", "restore", "statedir",
2441
"socket", "foreground", "zeroconf"):
2057
"priority", "servicename", "configdir",
2058
"use_dbus", "use_ipv6", "debuglevel", "restore",
2442
2060
value = getattr(options, option)
2443
2061
if value is not None:
2444
2062
server_settings[option] = value
2446
2064
# Force all strings to be unicode
2447
2065
for option in server_settings.keys():
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
2066
if type(server_settings[option]) is str:
2067
server_settings[option] = unicode(server_settings[option])
2458
2068
# Now we have our good server settings in "server_settings"
2460
2070
##################################################################
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")
2467
2072
# For convenience
2468
2073
debug = server_settings["debug"]
2469
2074
debuglevel = server_settings["debuglevel"]
2471
2076
use_ipv6 = server_settings["use_ipv6"]
2472
2077
stored_state_path = os.path.join(server_settings["statedir"],
2473
2078
stored_state_file)
2474
foreground = server_settings["foreground"]
2475
zeroconf = server_settings["zeroconf"]
2478
initlogger(debug, logging.DEBUG)
2081
initlogger(logging.DEBUG)
2480
2083
if not debuglevel:
2483
2086
level = getattr(logging, debuglevel.upper())
2484
initlogger(debug, level)
2486
2089
if server_settings["servicename"] != "Mandos":
2487
syslogger.setFormatter(
2488
logging.Formatter('Mandos ({}) [%(process)d]:'
2489
' %(levelname)s: %(message)s'.format(
2490
server_settings["servicename"])))
2090
syslogger.setFormatter(logging.Formatter
2091
('Mandos (%s) [%%(process)d]:'
2092
' %%(levelname)s: %%(message)s'
2093
% server_settings["servicename"]))
2492
2095
# Parse config file with clients
2493
client_config = configparser.SafeConfigParser(Client
2096
client_config = configparser.SafeConfigParser(Client.client_defaults)
2495
2097
client_config.read(os.path.join(server_settings["configdir"],
2496
2098
"clients.conf"))
2498
2100
global mandos_dbus_service
2499
2101
mandos_dbus_service = None
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"
2103
tcp_server = MandosServer((server_settings["address"],
2104
server_settings["port"]),
2106
interface=(server_settings["interface"]
2110
server_settings["priority"],
2113
pidfilename = "/var/run/mandos.pid"
2518
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2519
except IOError as e:
2520
logger.error("Could not open file %r", pidfilename,
2115
pidfile = open(pidfilename, "w")
2117
logger.error("Could not open file %r", pidfilename)
2523
for name in ("_mandos", "mandos", "nobody"):
2120
uid = pwd.getpwnam("_mandos").pw_uid
2121
gid = pwd.getpwnam("_mandos").pw_gid
2525
uid = pwd.getpwnam(name).pw_uid
2526
gid = pwd.getpwnam(name).pw_gid
2124
uid = pwd.getpwnam("mandos").pw_uid
2125
gid = pwd.getpwnam("mandos").pw_gid
2528
2126
except KeyError:
2128
uid = pwd.getpwnam("nobody").pw_uid
2129
gid = pwd.getpwnam("nobody").pw_gid
2536
2136
except OSError as error:
2537
if error.errno != errno.EPERM:
2137
if error[0] != errno.EPERM:
2541
2141
# Enable all possible GnuTLS debugging
2548
2148
def debug_gnutls(level, string):
2549
2149
logger.debug("GnuTLS: %s", string[:-1])
2551
gnutls.library.functions.gnutls_global_set_log_function(
2151
(gnutls.library.functions
2152
.gnutls_global_set_log_function(debug_gnutls))
2554
2154
# Redirect stdin so all checkers get /dev/null
2555
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2155
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2556
2156
os.dup2(null, sys.stdin.fileno())
2160
# No console logging
2161
logger.removeHandler(console)
2560
2163
# Need to fork before connecting to D-Bus
2562
2165
# 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.
2567
gobject.threads_init()
2569
2168
global main_loop
2570
2169
# From the Avahi example code
2571
DBusGMainLoop(set_as_default=True)
2170
DBusGMainLoop(set_as_default=True )
2572
2171
main_loop = gobject.MainLoop()
2573
2172
bus = dbus.SystemBus()
2574
2173
# End of Avahi example code
2577
2176
bus_name = dbus.service.BusName("se.recompile.Mandos",
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)
2177
bus, do_not_queue=True)
2178
old_bus_name = (dbus.service.BusName
2179
("se.bsnet.fukt.Mandos", bus,
2181
except dbus.exceptions.NameExistsException as e:
2182
logger.error(unicode(e) + ", disabling D-Bus")
2585
2183
use_dbus = False
2586
2184
server_settings["use_dbus"] = False
2587
2185
tcp_server.use_dbus = False
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"))
2186
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2187
service = AvahiServiceToSyslog(name =
2188
server_settings["servicename"],
2189
servicetype = "_mandos._tcp",
2190
protocol = protocol, bus = bus)
2191
if server_settings["interface"]:
2192
service.interface = (if_nametoindex
2193
(str(server_settings["interface"])))
2599
2195
global multiprocessing_manager
2600
2196
multiprocessing_manager = multiprocessing.Manager()
2602
2198
client_class = Client
2604
client_class = functools.partial(ClientDBus, bus = bus)
2200
client_class = functools.partial(ClientDBusTransitional,
2606
2203
client_settings = Client.config_parser(client_config)
2607
2204
old_client_settings = {}
2608
2205
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:
2618
2207
# Get client data and settings from last running state.
2619
2208
if server_settings["restore"]:
2621
2210
with open(stored_state_path, "rb") as stored_state:
2622
clients_data, old_client_settings = pickle.load(
2211
clients_data, old_client_settings = (pickle.load
2624
2213
os.remove(stored_state_path)
2625
2214
except IOError as e:
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:",
2215
logger.warning("Could not load persistent state: {0}"
2217
if e.errno != errno.ENOENT:
2633
except EOFError as e:
2634
logger.warning("Could not load persistent state: "
2638
2220
with PGPEngine() as pgp:
2639
for client_name, client in clients_data.items():
2640
# Skip removed clients
2641
if client_name not in client_settings:
2221
for client_name, client in clients_data.iteritems():
2644
2222
# Decide which value to use after restoring saved state.
2645
2223
# We have three different values: Old config file,
2646
2224
# new config file, and saved state.
2651
2229
# For each value in new config, check if it
2652
2230
# differs from the old config value (Except for
2653
2231
# the "secret" attribute)
2654
if (name != "secret"
2656
old_client_settings[client_name][name])):
2232
if (name != "secret" and
2233
value != old_client_settings[client_name]
2657
2235
client[name] = value
2658
2236
except KeyError:
2661
2239
# Clients who has passed its expire date can still be
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
2240
# enabled if its last checker was successful. Clients
2241
# whose checker failed before we stored its state is
2242
# assumed to have failed all checkers during downtime.
2666
2243
if client["enabled"]:
2667
2244
if datetime.datetime.utcnow() >= client["expires"]:
2668
2245
if not client["last_checked_ok"]:
2669
2246
logger.warning(
2670
"disabling client {} - Client never "
2671
"performed a successful checker".format(
2247
"disabling client {0} - Client never "
2248
"performed a successfull checker"
2249
.format(client["name"]))
2673
2250
client["enabled"] = False
2674
2251
elif client["last_checker_status"] != 0:
2675
2252
logger.warning(
2676
"disabling client {} - Client last"
2677
" checker failed with error code"
2680
client["last_checker_status"]))
2253
"disabling client {0} - Client "
2254
"last checker failed with error code {1}"
2255
.format(client["name"],
2256
client["last_checker_status"]))
2681
2257
client["enabled"] = False
2683
client["expires"] = (
2684
datetime.datetime.utcnow()
2685
+ client["timeout"])
2686
logger.debug("Last checker succeeded,"
2687
" keeping {} enabled".format(
2259
client["expires"] = (datetime.datetime
2261
+ client["timeout"])
2690
client["secret"] = pgp.decrypt(
2691
client["encrypted_secret"],
2692
client_settings[client_name]["secret"])
2264
client["secret"] = (
2265
pgp.decrypt(client["encrypted_secret"],
2266
client_settings[client_name]
2693
2268
except PGPError:
2694
2269
# If decryption fails, we use secret from new settings
2695
logger.debug("Failed to decrypt {} old secret".format(
2697
client["secret"] = (client_settings[client_name]
2270
logger.debug("Failed to decrypt {0} old secret"
2271
.format(client_name))
2272
client["secret"] = (
2273
client_settings[client_name]["secret"])
2700
2276
# Add/remove clients based on new changes made to config
2701
for client_name in (set(old_client_settings)
2702
- set(client_settings)):
2277
for client_name in set(old_client_settings) - set(client_settings):
2703
2278
del clients_data[client_name]
2704
for client_name in (set(client_settings)
2705
- set(old_client_settings)):
2279
for client_name in set(client_settings) - set(old_client_settings):
2706
2280
clients_data[client_name] = client_settings[client_name]
2708
# Create all client objects
2709
for client_name, client in clients_data.items():
2282
# Create clients all clients
2283
for client_name, client in clients_data.iteritems():
2710
2284
tcp_server.clients[client_name] = client_class(
2713
server_settings = server_settings)
2285
name = client_name, settings = client)
2715
2287
if not tcp_server.clients:
2716
2288
logger.warning("No clients defined")
2719
if pidfile is not None:
2723
print(pid, file=pidfile)
2725
logger.error("Could not write to file %r with PID %d",
2294
pidfile.write(str(pid) + "\n".encode("utf-8"))
2297
logger.error("Could not write to file %r with PID %d",
2300
# "pidfile" was never created
2728
2302
del pidfilename
2303
signal.signal(signal.SIGINT, signal.SIG_IGN)
2730
2305
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2731
2306
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2735
@alternate_dbus_interfaces(
2736
{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
2737
class MandosDBusService(DBusObjectWithProperties):
2309
class MandosDBusService(dbus.service.Object):
2738
2310
"""A D-Bus proxy object"""
2740
2311
def __init__(self):
2741
2312
dbus.service.Object.__init__(self, bus, "/")
2743
2313
_interface = "se.recompile.Mandos"
2745
@dbus_interface_annotations(_interface)
2748
"org.freedesktop.DBus.Property.EmitsChangedSignal":
2751
2315
@dbus.service.signal(_interface, signature="o")
2752
2316
def ClientAdded(self, objpath):