101
86
except ImportError:
102
87
SO_BINDTODEVICE = None
104
if sys.version_info.major == 2:
108
90
stored_state_file = "clients.pickle"
110
92
logger = logging.getLogger()
93
syslogger = (logging.handlers.SysLogHandler
94
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
95
address = str("/dev/log")))
114
if_nametoindex = ctypes.cdll.LoadLibrary(
115
ctypes.util.find_library("c")).if_nametoindex
98
if_nametoindex = (ctypes.cdll.LoadLibrary
99
(ctypes.util.find_library("c"))
116
101
except (OSError, AttributeError):
118
102
def if_nametoindex(interface):
119
103
"Get an interface index the hard way, i.e. using fcntl()"
120
104
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
121
105
with contextlib.closing(socket.socket()) as s:
122
106
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
123
struct.pack(b"16s16x", interface))
124
interface_index = struct.unpack("I", ifreq[16:20])[0]
107
struct.pack(str("16s16x"),
109
interface_index = struct.unpack(str("I"),
125
111
return interface_index
128
114
def initlogger(debug, level=logging.WARNING):
129
115
"""init logger and add loglevel"""
132
syslogger = (logging.handlers.SysLogHandler(
133
facility = logging.handlers.SysLogHandler.LOG_DAEMON,
134
address = "/dev/log"))
135
117
syslogger.setFormatter(logging.Formatter
136
118
('Mandos [%(process)d]: %(levelname)s:'
189
172
def password_encode(self, password):
190
173
# Passphrase can not be empty and can not contain newlines or
191
174
# 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"))
175
return b"mandos" + binascii.hexlify(password)
200
177
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:
178
self.gnupg.passphrase = self.password_encode(password)
179
with open(os.devnull, "w") as devnull:
181
proc = self.gnupg.run(['--symmetric'],
182
create_fhs=['stdin', 'stdout'],
183
attach_fhs={'stderr': devnull})
184
with contextlib.closing(proc.handles['stdin']) as f:
186
with contextlib.closing(proc.handles['stdout']) as f:
187
ciphertext = f.read()
191
self.gnupg.passphrase = None
216
192
return ciphertext
218
194
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:
195
self.gnupg.passphrase = self.password_encode(password)
196
with open(os.devnull, "w") as devnull:
198
proc = self.gnupg.run(['--decrypt'],
199
create_fhs=['stdin', 'stdout'],
200
attach_fhs={'stderr': devnull})
201
with contextlib.closing(proc.handles['stdin']) as f:
203
with contextlib.closing(proc.handles['stdout']) as f:
204
decrypted_plaintext = f.read()
208
self.gnupg.passphrase = None
234
209
return decrypted_plaintext
237
212
class AvahiError(Exception):
238
213
def __init__(self, value, *args, **kwargs):
239
214
self.value = value
240
return super(AvahiError, self).__init__(value, *args,
215
super(AvahiError, self).__init__(value, *args, **kwargs)
216
def __unicode__(self):
217
return unicode(repr(self.value))
244
219
class AvahiServiceError(AvahiError):
248
222
class AvahiGroupError(AvahiError):
297
264
self.entry_group_state_changed_match = None
299
def rename(self, remove=True):
300
267
"""Derived from the Avahi example code"""
301
268
if self.rename_count >= self.max_renames:
302
269
logger.critical("No suitable Zeroconf service name found"
303
270
" after %i retries, exiting.",
304
271
self.rename_count)
305
272
raise AvahiServiceError("Too many renames")
307
self.server.GetAlternativeServiceName(self.name))
308
self.rename_count += 1
273
self.name = unicode(self.server
274
.GetAlternativeServiceName(self.name))
309
275
logger.info("Changing Zeroconf service name to %r ...",
315
280
except dbus.exceptions.DBusException as error:
316
if (error.get_dbus_name()
317
== "org.freedesktop.Avahi.CollisionError"):
318
logger.info("Local Zeroconf service name collision.")
319
return self.rename(remove=False)
321
logger.critical("D-Bus Exception", exc_info=error)
281
logger.critical("D-Bus Exception", exc_info=error)
284
self.rename_count += 1
325
286
def remove(self):
326
287
"""Derived from the Avahi example code"""
381
343
def server_state_changed(self, state, error=None):
382
344
"""Derived from the Avahi example code"""
383
345
logger.debug("Avahi server state change: %i", state)
385
avahi.SERVER_INVALID: "Zeroconf server invalid",
386
avahi.SERVER_REGISTERING: None,
387
avahi.SERVER_COLLISION: "Zeroconf server name collision",
388
avahi.SERVER_FAILURE: "Zeroconf server failure",
346
bad_states = { avahi.SERVER_INVALID:
347
"Zeroconf server invalid",
348
avahi.SERVER_REGISTERING: None,
349
avahi.SERVER_COLLISION:
350
"Zeroconf server name collision",
351
avahi.SERVER_FAILURE:
352
"Zeroconf server failure" }
390
353
if state in bad_states:
391
354
if bad_states[state] is not None:
392
355
if error is None:
411
374
follow_name_owner_changes=True),
412
375
avahi.DBUS_INTERFACE_SERVER)
413
376
self.server.connect_to_signal("StateChanged",
414
self.server_state_changed)
377
self.server_state_changed)
415
378
self.server_state_changed(self.server.GetState())
418
380
class AvahiServiceToSyslog(AvahiService):
419
def rename(self, *args, **kwargs):
420
382
"""Add the new name to the syslog messages"""
421
ret = AvahiService.rename(self, *args, **kwargs)
422
syslogger.setFormatter(logging.Formatter(
423
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
383
ret = AvahiService.rename(self)
384
syslogger.setFormatter(logging.Formatter
385
('Mandos ({0}) [%(process)d]:'
386
' %(levelname)s: %(message)s'
427
def call_pipe(connection, # : multiprocessing.Connection
428
func, *args, **kwargs):
429
"""This function is meant to be called by multiprocessing.Process
431
This function runs func(*args, **kwargs), and writes the resulting
432
return value on the provided multiprocessing.Connection.
434
connection.send(func(*args, **kwargs))
390
def timedelta_to_milliseconds(td):
391
"Convert a datetime.timedelta() to milliseconds"
392
return ((td.days * 24 * 60 * 60 * 1000)
393
+ (td.seconds * 1000)
394
+ (td.microseconds // 1000))
437
396
class Client(object):
438
397
"""A representation of a client host served by this server.
477
434
runtime_expansions: Allowed attributes for runtime expansion.
478
435
expires: datetime.datetime(); time (UTC) when a client will be
479
436
disabled, or None
480
server_settings: The server_settings dict from main()
483
439
runtime_expansions = ("approval_delay", "approval_duration",
484
"created", "enabled", "expires",
485
"fingerprint", "host", "interval",
486
"last_approval_request", "last_checked_ok",
440
"created", "enabled", "fingerprint",
441
"host", "interval", "last_checked_ok",
487
442
"last_enabled", "name", "timeout")
490
"extended_timeout": "PT15M",
492
"checker": "fping -q -- %%(host)s",
494
"approval_delay": "PT0S",
495
"approval_duration": "PT1S",
496
"approved_by_default": "True",
443
client_defaults = { "timeout": "5m",
444
"extended_timeout": "15m",
446
"checker": "fping -q -- %%(host)s",
448
"approval_delay": "0s",
449
"approval_duration": "1s",
450
"approved_by_default": "True",
454
def timeout_milliseconds(self):
455
"Return the 'timeout' attribute in milliseconds"
456
return timedelta_to_milliseconds(self.timeout)
458
def extended_timeout_milliseconds(self):
459
"Return the 'extended_timeout' attribute in milliseconds"
460
return timedelta_to_milliseconds(self.extended_timeout)
462
def interval_milliseconds(self):
463
"Return the 'interval' attribute in milliseconds"
464
return timedelta_to_milliseconds(self.interval)
466
def approval_delay_milliseconds(self):
467
return timedelta_to_milliseconds(self.approval_delay)
501
470
def config_parser(config):
579
545
self.current_checker_command = None
580
546
self.approved = None
581
547
self.approvals_pending = 0
582
self.changedstate = multiprocessing_manager.Condition(
583
multiprocessing_manager.Lock())
584
self.client_structure = [attr
585
for attr in self.__dict__.iterkeys()
548
self.changedstate = (multiprocessing_manager
549
.Condition(multiprocessing_manager
551
self.client_structure = [attr for attr in
552
self.__dict__.iterkeys()
586
553
if not attr.startswith("_")]
587
554
self.client_structure.append("client_structure")
589
for name, t in inspect.getmembers(
590
type(self), lambda obj: isinstance(obj, property)):
556
for name, t in inspect.getmembers(type(self),
591
560
if not name.startswith("_"):
592
561
self.client_structure.append(name)
601
570
if getattr(self, "enabled", False):
602
571
# Already enabled
573
self.send_changedstate()
604
574
self.expires = datetime.datetime.utcnow() + self.timeout
605
575
self.enabled = True
606
576
self.last_enabled = datetime.datetime.utcnow()
607
577
self.init_checker()
608
self.send_changedstate()
610
579
def disable(self, quiet=True):
611
580
"""Disable this client."""
612
581
if not getattr(self, "enabled", False):
584
self.send_changedstate()
615
586
logger.info("Disabling client %s", self.name)
616
if getattr(self, "disable_initiator_tag", None) is not None:
587
if getattr(self, "disable_initiator_tag", False):
617
588
gobject.source_remove(self.disable_initiator_tag)
618
589
self.disable_initiator_tag = None
619
590
self.expires = None
620
if getattr(self, "checker_initiator_tag", None) is not None:
591
if getattr(self, "checker_initiator_tag", False):
621
592
gobject.source_remove(self.checker_initiator_tag)
622
593
self.checker_initiator_tag = None
623
594
self.stop_checker()
624
595
self.enabled = False
626
self.send_changedstate()
627
596
# Do not run this again if called by a gobject.timeout_add
633
602
def init_checker(self):
634
603
# Schedule a new checker to be started an 'interval' from now,
635
604
# and every interval from then on.
636
if self.checker_initiator_tag is not None:
637
gobject.source_remove(self.checker_initiator_tag)
638
self.checker_initiator_tag = gobject.timeout_add(
639
int(self.interval.total_seconds() * 1000),
605
self.checker_initiator_tag = (gobject.timeout_add
606
(self.interval_milliseconds(),
641
608
# Schedule a disable() when 'timeout' has passed
642
if self.disable_initiator_tag is not None:
643
gobject.source_remove(self.disable_initiator_tag)
644
self.disable_initiator_tag = gobject.timeout_add(
645
int(self.timeout.total_seconds() * 1000), self.disable)
609
self.disable_initiator_tag = (gobject.timeout_add
610
(self.timeout_milliseconds(),
646
612
# Also start a new checker *right now*.
647
613
self.start_checker()
649
def checker_callback(self, source, condition, connection,
615
def checker_callback(self, pid, condition, command):
651
616
"""The checker has completed, so take appropriate actions."""
652
617
self.checker_callback_tag = None
653
618
self.checker = None
654
# Read return code from connection (see call_pipe)
655
returncode = connection.recv()
659
self.last_checker_status = returncode
660
self.last_checker_signal = None
619
if os.WIFEXITED(condition):
620
self.last_checker_status = os.WEXITSTATUS(condition)
661
621
if self.last_checker_status == 0:
662
622
logger.info("Checker for %(name)s succeeded",
664
624
self.checked_ok()
666
logger.info("Checker for %(name)s failed", vars(self))
626
logger.info("Checker for %(name)s failed",
668
629
self.last_checker_status = -1
669
self.last_checker_signal = -returncode
670
630
logger.warning("Checker for %(name)s crashed?",
674
633
def checked_ok(self):
675
634
"""Assert that the client has been seen, alive and well."""
676
635
self.last_checked_ok = datetime.datetime.utcnow()
677
636
self.last_checker_status = 0
678
self.last_checker_signal = None
679
637
self.bump_timeout()
681
639
def bump_timeout(self, timeout=None):
699
657
If a checker already exists, leave it running and do
701
659
# The reason for not killing a running checker is that if we
702
# did that, and if a checker (for some reason) started running
703
# slowly and taking more than 'interval' time, then the client
704
# would inevitably timeout, since no checker would get a
705
# chance to run to completion. If we instead leave running
660
# did that, then if a checker (for some reason) started
661
# running slowly and taking more than 'interval' time, the
662
# client would inevitably timeout, since no checker would get
663
# a chance to run to completion. If we instead leave running
706
664
# checkers alone, the checker would have to take more time
707
665
# than 'timeout' for the client to be disabled, which is as it
710
if self.checker is not None and not self.checker.is_alive():
711
logger.warning("Checker was not alive; joining")
668
# If a checker exists, make sure it is not a zombie
670
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
671
except (AttributeError, OSError) as error:
672
if (isinstance(error, OSError)
673
and error.errno != errno.ECHILD):
677
logger.warning("Checker was a zombie")
678
gobject.source_remove(self.checker_callback_tag)
679
self.checker_callback(pid, status,
680
self.current_checker_command)
714
681
# Start a new checker if needed
715
682
if self.checker is None:
716
# Escape attributes for the shell
718
attr: re.escape(str(getattr(self, attr)))
719
for attr in self.runtime_expansions }
721
command = self.checker_command % escaped_attrs
722
except TypeError as error:
723
logger.error('Could not format string "%s"',
724
self.checker_command,
684
# In case checker_command has exactly one % operator
685
command = self.checker_command % self.host
687
# Escape attributes for the shell
688
escaped_attrs = dict(
690
re.escape(unicode(str(getattr(self, attr, "")),
694
self.runtime_expansions)
697
command = self.checker_command % escaped_attrs
698
except TypeError as error:
699
logger.error('Could not format string "%s"',
700
self.checker_command, exc_info=error)
701
return True # Try again later
702
self.current_checker_command = command
704
logger.info("Starting checker %r for %s",
706
# We don't need to redirect stdout and stderr, since
707
# in normal mode, that is already done by daemon(),
708
# and in debug mode we don't want to. (Stdin is
709
# always replaced by /dev/null.)
710
self.checker = subprocess.Popen(command,
713
self.checker_callback_tag = (gobject.child_watch_add
715
self.checker_callback,
717
# The checker may have completed before the gobject
718
# watch was added. Check for this.
719
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
721
gobject.source_remove(self.checker_callback_tag)
722
self.checker_callback(pid, status, command)
723
except OSError as error:
724
logger.error("Failed to start subprocess",
726
return True # Try again later
727
self.current_checker_command = command
728
logger.info("Starting checker %r for %s", command,
730
# We don't need to redirect stdout and stderr, since
731
# in normal mode, that is already done by daemon(),
732
# and in debug mode we don't want to. (Stdin is
733
# always replaced by /dev/null.)
734
# The exception is when not debugging but nevertheless
735
# running in the foreground; use the previously
737
popen_args = { "close_fds": True,
740
if (not self.server_settings["debug"]
741
and self.server_settings["foreground"]):
742
popen_args.update({"stdout": wnull,
744
pipe = multiprocessing.Pipe(duplex = False)
745
self.checker = multiprocessing.Process(
747
args = (pipe[1], subprocess.call, command),
750
self.checker_callback_tag = gobject.io_add_watch(
751
pipe[0].fileno(), gobject.IO_IN,
752
self.checker_callback, pipe[0], command)
753
726
# Re-run this periodically if run by gobject.timeout_add
824
798
"""Decorator to annotate D-Bus methods, signals or properties
827
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
828
"org.freedesktop.DBus.Property."
829
"EmitsChangedSignal": "false"})
830
801
@dbus_service_property("org.example.Interface", signature="b",
803
@dbus_annotations({{"org.freedesktop.DBus.Deprecated": "true",
804
"org.freedesktop.DBus.Property."
805
"EmitsChangedSignal": "false"})
832
806
def Property_dbus_property(self):
833
807
return dbus.Boolean(False)
836
809
def decorator(func):
837
810
func._dbus_annotations = annotations
843
815
class DBusPropertyException(dbus.exceptions.DBusException):
844
816
"""A base class for D-Bus property-related exceptions
818
def __unicode__(self):
819
return unicode(str(self))
849
822
class DBusPropertyAccessException(DBusPropertyException):
873
846
If called like _is_dbus_thing("method") it returns a function
874
847
suitable for use as predicate to inspect.getmembers().
876
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
849
return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),
879
852
def _get_all_dbus_things(self, thing):
880
853
"""Returns a generator of (name, attribute) pairs
882
return ((getattr(athing.__get__(self), "_dbus_name", name),
855
return ((getattr(athing.__get__(self), "_dbus_name",
883
857
athing.__get__(self))
884
858
for cls in self.__class__.__mro__
885
859
for name, athing in
886
inspect.getmembers(cls, self._is_dbus_thing(thing)))
860
inspect.getmembers(cls,
861
self._is_dbus_thing(thing)))
888
863
def _get_dbus_property(self, interface_name, property_name):
889
864
"""Returns a bound method if one exists which is a D-Bus
890
865
property with the specified name and interface.
892
for cls in self.__class__.__mro__:
893
for name, value in inspect.getmembers(
894
cls, self._is_dbus_thing("property")):
867
for cls in self.__class__.__mro__:
868
for name, value in (inspect.getmembers
870
self._is_dbus_thing("property"))):
895
871
if (value._dbus_name == property_name
896
872
and value._dbus_interface == interface_name):
897
873
return value.__get__(self)
899
875
# No such property
900
raise DBusPropertyNotFound("{}:{}.{}".format(
901
self.dbus_object_path, interface_name, property_name))
876
raise DBusPropertyNotFound(self.dbus_object_path + ":"
877
+ interface_name + "."
903
@dbus.service.method(dbus.PROPERTIES_IFACE,
880
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
905
881
out_signature="v")
906
882
def Get(self, interface_name, property_name):
907
883
"""Standard D-Bus property Get() method, see D-Bus standard.
1089
1054
# Ignore non-D-Bus attributes, and D-Bus attributes
1090
1055
# with the wrong interface name
1091
1056
if (not hasattr(attribute, "_dbus_interface")
1092
or not attribute._dbus_interface.startswith(
1093
orig_interface_name)):
1057
or not attribute._dbus_interface
1058
.startswith(orig_interface_name)):
1095
1060
# Create an alternate D-Bus interface name based on
1096
1061
# the current name
1097
alt_interface = attribute._dbus_interface.replace(
1098
orig_interface_name, alt_interface_name)
1062
alt_interface = (attribute._dbus_interface
1063
.replace(orig_interface_name,
1064
alt_interface_name))
1099
1065
interface_names.add(alt_interface)
1100
1066
# Is this a D-Bus signal?
1101
1067
if getattr(attribute, "_dbus_is_signal", False):
1102
if sys.version_info.major == 2:
1103
# Extract the original non-method undecorated
1104
# function by black magic
1105
nonmethod_func = (dict(
1068
# Extract the original non-method function by
1070
nonmethod_func = (dict(
1106
1071
zip(attribute.func_code.co_freevars,
1107
attribute.__closure__))
1108
["func"].cell_contents)
1110
nonmethod_func = attribute
1072
attribute.__closure__))["func"]
1111
1074
# Create a new, but exactly alike, function
1112
1075
# object, and decorate it to be a new D-Bus signal
1113
1076
# with the alternate D-Bus interface name
1114
if sys.version_info.major == 2:
1115
new_function = types.FunctionType(
1116
nonmethod_func.func_code,
1117
nonmethod_func.func_globals,
1118
nonmethod_func.func_name,
1119
nonmethod_func.func_defaults,
1120
nonmethod_func.func_closure)
1122
new_function = types.FunctionType(
1123
nonmethod_func.__code__,
1124
nonmethod_func.__globals__,
1125
nonmethod_func.__name__,
1126
nonmethod_func.__defaults__,
1127
nonmethod_func.__closure__)
1128
new_function = (dbus.service.signal(
1130
attribute._dbus_signature)(new_function))
1077
new_function = (dbus.service.signal
1079
attribute._dbus_signature)
1080
(types.FunctionType(
1081
nonmethod_func.func_code,
1082
nonmethod_func.func_globals,
1083
nonmethod_func.func_name,
1084
nonmethod_func.func_defaults,
1085
nonmethod_func.func_closure)))
1131
1086
# Copy annotations, if any
1133
new_function._dbus_annotations = dict(
1134
attribute._dbus_annotations)
1088
new_function._dbus_annotations = (
1089
dict(attribute._dbus_annotations))
1135
1090
except AttributeError:
1137
1092
# Define a creator of a function to call both the
1159
1112
# object. Decorate it to be a new D-Bus method
1160
1113
# with the alternate D-Bus interface name. Add it
1161
1114
# to the class.
1163
dbus.service.method(
1165
attribute._dbus_in_signature,
1166
attribute._dbus_out_signature)
1167
(types.FunctionType(attribute.func_code,
1168
attribute.func_globals,
1169
attribute.func_name,
1170
attribute.func_defaults,
1171
attribute.func_closure)))
1115
attr[attrname] = (dbus.service.method
1117
attribute._dbus_in_signature,
1118
attribute._dbus_out_signature)
1120
(attribute.func_code,
1121
attribute.func_globals,
1122
attribute.func_name,
1123
attribute.func_defaults,
1124
attribute.func_closure)))
1172
1125
# Copy annotations, if any
1174
attr[attrname]._dbus_annotations = dict(
1175
attribute._dbus_annotations)
1127
attr[attrname]._dbus_annotations = (
1128
dict(attribute._dbus_annotations))
1176
1129
except AttributeError:
1178
1131
# Is this a D-Bus property?
1181
1134
# object, and decorate it to be a new D-Bus
1182
1135
# property with the alternate D-Bus interface
1183
1136
# name. Add it to the class.
1184
attr[attrname] = (dbus_service_property(
1185
alt_interface, attribute._dbus_signature,
1186
attribute._dbus_access,
1187
attribute._dbus_get_args_options
1189
(types.FunctionType(
1190
attribute.func_code,
1191
attribute.func_globals,
1192
attribute.func_name,
1193
attribute.func_defaults,
1194
attribute.func_closure)))
1137
attr[attrname] = (dbus_service_property
1139
attribute._dbus_signature,
1140
attribute._dbus_access,
1142
._dbus_get_args_options
1145
(attribute.func_code,
1146
attribute.func_globals,
1147
attribute.func_name,
1148
attribute.func_defaults,
1149
attribute.func_closure)))
1195
1150
# Copy annotations, if any
1197
attr[attrname]._dbus_annotations = dict(
1198
attribute._dbus_annotations)
1152
attr[attrname]._dbus_annotations = (
1153
dict(attribute._dbus_annotations))
1199
1154
except AttributeError:
1201
1156
# Is this a D-Bus interface?
1258
1210
Client.__init__(self, *args, **kwargs)
1259
1211
# Only now, when this client is initialized, can it show up on
1261
client_object_name = str(self.name).translate(
1213
client_object_name = unicode(self.name).translate(
1262
1214
{ord("."): ord("_"),
1263
1215
ord("-"): ord("_")})
1264
self.dbus_object_path = dbus.ObjectPath(
1265
"/clients/" + client_object_name)
1216
self.dbus_object_path = (dbus.ObjectPath
1217
("/clients/" + client_object_name))
1266
1218
DBusObjectWithProperties.__init__(self, self.bus,
1267
1219
self.dbus_object_path)
1269
def notifychangeproperty(transform_func, dbus_name,
1270
type_func=lambda x: x,
1272
invalidate_only=False,
1273
_interface=_interface):
1221
def notifychangeproperty(transform_func,
1222
dbus_name, type_func=lambda x: x,
1274
1224
""" Modify a variable so that it's a property which announces
1275
1225
its changes to DBus.
1281
1231
to the D-Bus. Default: no transform
1282
1232
variant_level: D-Bus variant level. Default: 1
1284
attrname = "_{}".format(dbus_name)
1234
attrname = "_{0}".format(dbus_name)
1286
1235
def setter(self, value):
1287
1236
if hasattr(self, "dbus_object_path"):
1288
1237
if (not hasattr(self, attrname) or
1289
1238
type_func(getattr(self, attrname, None))
1290
1239
!= type_func(value)):
1292
self.PropertiesChanged(
1293
_interface, dbus.Dictionary(),
1294
dbus.Array((dbus_name, )))
1296
dbus_value = transform_func(
1298
variant_level = variant_level)
1299
self.PropertyChanged(dbus.String(dbus_name),
1301
self.PropertiesChanged(
1303
dbus.Dictionary({ dbus.String(dbus_name):
1240
dbus_value = transform_func(type_func(value),
1243
self.PropertyChanged(dbus.String(dbus_name),
1306
1245
setattr(self, attrname, value)
1308
1247
return property(lambda self: getattr(self, attrname), setter)
1325
1264
datetime_to_dbus, "LastApprovalRequest")
1326
1265
approved_by_default = notifychangeproperty(dbus.Boolean,
1327
1266
"ApprovedByDefault")
1328
approval_delay = notifychangeproperty(
1329
dbus.UInt64, "ApprovalDelay",
1330
type_func = lambda td: td.total_seconds() * 1000)
1267
approval_delay = notifychangeproperty(dbus.UInt64,
1270
timedelta_to_milliseconds)
1331
1271
approval_duration = notifychangeproperty(
1332
1272
dbus.UInt64, "ApprovalDuration",
1333
type_func = lambda td: td.total_seconds() * 1000)
1273
type_func = timedelta_to_milliseconds)
1334
1274
host = notifychangeproperty(dbus.String, "Host")
1335
timeout = notifychangeproperty(
1336
dbus.UInt64, "Timeout",
1337
type_func = lambda td: td.total_seconds() * 1000)
1275
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1277
timedelta_to_milliseconds)
1338
1278
extended_timeout = notifychangeproperty(
1339
1279
dbus.UInt64, "ExtendedTimeout",
1340
type_func = lambda td: td.total_seconds() * 1000)
1341
interval = notifychangeproperty(
1342
dbus.UInt64, "Interval",
1343
type_func = lambda td: td.total_seconds() * 1000)
1280
type_func = timedelta_to_milliseconds)
1281
interval = notifychangeproperty(dbus.UInt64,
1284
timedelta_to_milliseconds)
1344
1285
checker_command = notifychangeproperty(dbus.String, "Checker")
1345
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1346
invalidate_only=True)
1348
1287
del notifychangeproperty
1356
1295
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1357
1296
Client.__del__(self, *args, **kwargs)
1359
def checker_callback(self, source, condition,
1360
connection, command, *args, **kwargs):
1361
ret = Client.checker_callback(self, source, condition,
1362
connection, command, *args,
1364
exitstatus = self.last_checker_status
1298
def checker_callback(self, pid, condition, command,
1300
self.checker_callback_tag = None
1302
if os.WIFEXITED(condition):
1303
exitstatus = os.WEXITSTATUS(condition)
1366
1304
# Emit D-Bus signal
1367
1305
self.CheckerCompleted(dbus.Int16(exitstatus),
1306
dbus.Int64(condition),
1369
1307
dbus.String(command))
1371
1309
# Emit D-Bus signal
1372
1310
self.CheckerCompleted(dbus.Int16(-1),
1374
self.last_checker_signal),
1311
dbus.Int64(condition),
1375
1312
dbus.String(command))
1314
return Client.checker_callback(self, pid, condition, command,
1378
1317
def start_checker(self, *args, **kwargs):
1379
old_checker_pid = getattr(self.checker, "pid", None)
1318
old_checker = self.checker
1319
if self.checker is not None:
1320
old_checker_pid = self.checker.pid
1322
old_checker_pid = None
1380
1323
r = Client.start_checker(self, *args, **kwargs)
1381
1324
# Only if new checker process was started
1382
1325
if (self.checker is not None
1493
1441
self.approved_by_default = bool(value)
1495
1443
# ApprovalDelay - property
1496
@dbus_service_property(_interface,
1444
@dbus_service_property(_interface, signature="t",
1498
1445
access="readwrite")
1499
1446
def ApprovalDelay_dbus_property(self, value=None):
1500
1447
if value is None: # get
1501
return dbus.UInt64(self.approval_delay.total_seconds()
1448
return dbus.UInt64(self.approval_delay_milliseconds())
1503
1449
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1505
1451
# ApprovalDuration - property
1506
@dbus_service_property(_interface,
1452
@dbus_service_property(_interface, signature="t",
1508
1453
access="readwrite")
1509
1454
def ApprovalDuration_dbus_property(self, value=None):
1510
1455
if value is None: # get
1511
return dbus.UInt64(self.approval_duration.total_seconds()
1456
return dbus.UInt64(timedelta_to_milliseconds(
1457
self.approval_duration))
1513
1458
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1515
1460
# Name - property
1579
1522
return datetime_to_dbus(self.last_approval_request)
1581
1524
# Timeout - property
1582
@dbus_service_property(_interface,
1525
@dbus_service_property(_interface, signature="t",
1584
1526
access="readwrite")
1585
1527
def Timeout_dbus_property(self, value=None):
1586
1528
if value is None: # get
1587
return dbus.UInt64(self.timeout.total_seconds() * 1000)
1588
old_timeout = self.timeout
1529
return dbus.UInt64(self.timeout_milliseconds())
1589
1530
self.timeout = datetime.timedelta(0, 0, 0, value)
1590
# Reschedule disabling
1531
# Reschedule timeout
1591
1532
if self.enabled:
1592
1533
now = datetime.datetime.utcnow()
1593
self.expires += self.timeout - old_timeout
1594
if self.expires <= now:
1534
time_to_die = timedelta_to_milliseconds(
1535
(self.last_checked_ok + self.timeout) - now)
1536
if time_to_die <= 0:
1595
1537
# The timeout has passed
1540
self.expires = (now +
1541
datetime.timedelta(milliseconds =
1598
1543
if (getattr(self, "disable_initiator_tag", None)
1601
1546
gobject.source_remove(self.disable_initiator_tag)
1602
self.disable_initiator_tag = gobject.timeout_add(
1603
int((self.expires - now).total_seconds() * 1000),
1547
self.disable_initiator_tag = (gobject.timeout_add
1606
1551
# ExtendedTimeout - property
1607
@dbus_service_property(_interface,
1552
@dbus_service_property(_interface, signature="t",
1609
1553
access="readwrite")
1610
1554
def ExtendedTimeout_dbus_property(self, value=None):
1611
1555
if value is None: # get
1612
return dbus.UInt64(self.extended_timeout.total_seconds()
1556
return dbus.UInt64(self.extended_timeout_milliseconds())
1614
1557
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1616
1559
# Interval - property
1617
@dbus_service_property(_interface,
1560
@dbus_service_property(_interface, signature="t",
1619
1561
access="readwrite")
1620
1562
def Interval_dbus_property(self, value=None):
1621
1563
if value is None: # get
1622
return dbus.UInt64(self.interval.total_seconds() * 1000)
1564
return dbus.UInt64(self.interval_milliseconds())
1623
1565
self.interval = datetime.timedelta(0, 0, 0, value)
1624
1566
if getattr(self, "checker_initiator_tag", None) is None:
1626
1568
if self.enabled:
1627
1569
# Reschedule checker run
1628
1570
gobject.source_remove(self.checker_initiator_tag)
1629
self.checker_initiator_tag = gobject.timeout_add(
1630
value, self.start_checker)
1631
self.start_checker() # Start one now, too
1571
self.checker_initiator_tag = (gobject.timeout_add
1572
(value, self.start_checker))
1573
self.start_checker() # Start one now, too
1633
1575
# Checker - property
1634
@dbus_service_property(_interface,
1576
@dbus_service_property(_interface, signature="s",
1636
1577
access="readwrite")
1637
1578
def Checker_dbus_property(self, value=None):
1638
1579
if value is None: # get
1639
1580
return dbus.String(self.checker_command)
1640
self.checker_command = str(value)
1581
self.checker_command = unicode(value)
1642
1583
# CheckerRunning - property
1643
@dbus_service_property(_interface,
1584
@dbus_service_property(_interface, signature="b",
1645
1585
access="readwrite")
1646
1586
def CheckerRunning_dbus_property(self, value=None):
1647
1587
if value is None: # get
1872
1813
def fingerprint(openpgp):
1873
1814
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1874
1815
# New GnuTLS "datum" with the OpenPGP public key
1875
datum = gnutls.library.types.gnutls_datum_t(
1876
ctypes.cast(ctypes.c_char_p(openpgp),
1877
ctypes.POINTER(ctypes.c_ubyte)),
1878
ctypes.c_uint(len(openpgp)))
1816
datum = (gnutls.library.types
1817
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1820
ctypes.c_uint(len(openpgp))))
1879
1821
# New empty GnuTLS certificate
1880
1822
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1881
gnutls.library.functions.gnutls_openpgp_crt_init(
1823
(gnutls.library.functions
1824
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
1883
1825
# Import the OpenPGP public key into the certificate
1884
gnutls.library.functions.gnutls_openpgp_crt_import(
1885
crt, ctypes.byref(datum),
1886
gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)
1826
(gnutls.library.functions
1827
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1828
gnutls.library.constants
1829
.GNUTLS_OPENPGP_FMT_RAW))
1887
1830
# Verify the self signature in the key
1888
1831
crtverify = ctypes.c_uint()
1889
gnutls.library.functions.gnutls_openpgp_crt_verify_self(
1890
crt, 0, ctypes.byref(crtverify))
1832
(gnutls.library.functions
1833
.gnutls_openpgp_crt_verify_self(crt, 0,
1834
ctypes.byref(crtverify)))
1891
1835
if crtverify.value != 0:
1892
1836
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1893
raise gnutls.errors.CertificateSecurityError(
1837
raise (gnutls.errors.CertificateSecurityError
1895
1839
# New buffer for the fingerprint
1896
1840
buf = ctypes.create_string_buffer(20)
1897
1841
buf_len = ctypes.c_size_t()
1898
1842
# Get the fingerprint from the certificate into the buffer
1899
gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint(
1900
crt, ctypes.byref(buf), ctypes.byref(buf_len))
1843
(gnutls.library.functions
1844
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1845
ctypes.byref(buf_len)))
1901
1846
# Deinit the certificate
1902
1847
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1903
1848
# Convert the buffer to a Python bytestring
1954
1898
interface: None or a network interface name (string)
1955
1899
use_ipv6: Boolean; to use IPv6 or not
1958
1901
def __init__(self, server_address, RequestHandlerClass,
1962
"""If socketfd is set, use that file descriptor instead of
1963
creating a new one with socket.socket().
1902
interface=None, use_ipv6=True):
1965
1903
self.interface = interface
1967
1905
self.address_family = socket.AF_INET6
1968
if socketfd is not None:
1969
# Save the file descriptor
1970
self.socketfd = socketfd
1971
# Save the original socket.socket() function
1972
self.socket_socket = socket.socket
1973
# To implement --socket, we monkey patch socket.socket.
1975
# (When socketserver.TCPServer is a new-style class, we
1976
# could make self.socket into a property instead of monkey
1977
# patching socket.socket.)
1979
# Create a one-time-only replacement for socket.socket()
1980
@functools.wraps(socket.socket)
1981
def socket_wrapper(*args, **kwargs):
1982
# Restore original function so subsequent calls are
1984
socket.socket = self.socket_socket
1985
del self.socket_socket
1986
# This time only, return a new socket object from the
1987
# saved file descriptor.
1988
return socket.fromfd(self.socketfd, *args, **kwargs)
1989
# Replace socket.socket() function with wrapper
1990
socket.socket = socket_wrapper
1991
# The socketserver.TCPServer.__init__ will call
1992
# socket.socket(), which might be our replacement,
1993
# socket_wrapper(), if socketfd was set.
1994
1906
socketserver.TCPServer.__init__(self, server_address,
1995
1907
RequestHandlerClass)
1997
1908
def server_bind(self):
1998
1909
"""This overrides the normal server_bind() function
1999
1910
to bind to an interface if one was specified, and also NOT to
2005
1916
self.interface)
2008
self.socket.setsockopt(
2009
socket.SOL_SOCKET, SO_BINDTODEVICE,
2010
(self.interface + "\0").encode("utf-8"))
1919
self.socket.setsockopt(socket.SOL_SOCKET,
2011
1923
except socket.error as error:
2012
if error.errno == errno.EPERM:
2013
logger.error("No permission to bind to"
2014
" interface %s", self.interface)
2015
elif error.errno == errno.ENOPROTOOPT:
1924
if error[0] == errno.EPERM:
1925
logger.error("No permission to"
1926
" bind to interface %s",
1928
elif error[0] == errno.ENOPROTOOPT:
2016
1929
logger.error("SO_BINDTODEVICE not available;"
2017
1930
" cannot bind to interface %s",
2018
1931
self.interface)
2019
elif error.errno == errno.ENODEV:
2020
logger.error("Interface %s does not exist,"
2021
" cannot bind", self.interface)
2024
1934
# Only bind(2) the socket if we really need to.
2081
1985
def add_pipe(self, parent_pipe, proc):
2082
1986
# Call "handle_ipc" for both data and EOF events
2083
gobject.io_add_watch(
2084
parent_pipe.fileno(),
2085
gobject.IO_IN | gobject.IO_HUP,
2086
functools.partial(self.handle_ipc,
2087
parent_pipe = parent_pipe,
1987
gobject.io_add_watch(parent_pipe.fileno(),
1988
gobject.IO_IN | gobject.IO_HUP,
1989
functools.partial(self.handle_ipc,
2090
def handle_ipc(self, source, condition,
2093
client_object=None):
1994
def handle_ipc(self, source, condition, parent_pipe=None,
1995
proc = None, client_object=None):
1997
gobject.IO_IN: "IN", # There is data to read.
1998
gobject.IO_OUT: "OUT", # Data can be written (without
2000
gobject.IO_PRI: "PRI", # There is urgent data to read.
2001
gobject.IO_ERR: "ERR", # Error condition.
2002
gobject.IO_HUP: "HUP" # Hung up (the connection has been
2003
# broken, usually for pipes and
2006
conditions_string = ' | '.join(name
2008
condition_names.iteritems()
2009
if cond & condition)
2094
2010
# error, or the other end of multiprocessing.Pipe has closed
2095
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2011
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2096
2012
# Wait for other process to exit
2159
def rfc3339_duration_to_delta(duration):
2160
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2162
>>> rfc3339_duration_to_delta("P7D")
2163
datetime.timedelta(7)
2164
>>> rfc3339_duration_to_delta("PT60S")
2165
datetime.timedelta(0, 60)
2166
>>> rfc3339_duration_to_delta("PT60M")
2167
datetime.timedelta(0, 3600)
2168
>>> rfc3339_duration_to_delta("PT24H")
2169
datetime.timedelta(1)
2170
>>> rfc3339_duration_to_delta("P1W")
2171
datetime.timedelta(7)
2172
>>> rfc3339_duration_to_delta("PT5M30S")
2173
datetime.timedelta(0, 330)
2174
>>> rfc3339_duration_to_delta("P1DT3M20S")
2175
datetime.timedelta(1, 200)
2178
# Parsing an RFC 3339 duration with regular expressions is not
2179
# possible - there would have to be multiple places for the same
2180
# values, like seconds. The current code, while more esoteric, is
2181
# cleaner without depending on a parsing library. If Python had a
2182
# built-in library for parsing we would use it, but we'd like to
2183
# avoid excessive use of external libraries.
2185
# New type for defining tokens, syntax, and semantics all-in-one
2186
Token = collections.namedtuple("Token", (
2187
"regexp", # To match token; if "value" is not None, must have
2188
# a "group" containing digits
2189
"value", # datetime.timedelta or None
2190
"followers")) # Tokens valid after this token
2191
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2192
# the "duration" ABNF definition in RFC 3339, Appendix A.
2193
token_end = Token(re.compile(r"$"), None, frozenset())
2194
token_second = Token(re.compile(r"(\d+)S"),
2195
datetime.timedelta(seconds=1),
2196
frozenset((token_end, )))
2197
token_minute = Token(re.compile(r"(\d+)M"),
2198
datetime.timedelta(minutes=1),
2199
frozenset((token_second, token_end)))
2200
token_hour = Token(re.compile(r"(\d+)H"),
2201
datetime.timedelta(hours=1),
2202
frozenset((token_minute, token_end)))
2203
token_time = Token(re.compile(r"T"),
2205
frozenset((token_hour, token_minute,
2207
token_day = Token(re.compile(r"(\d+)D"),
2208
datetime.timedelta(days=1),
2209
frozenset((token_time, token_end)))
2210
token_month = Token(re.compile(r"(\d+)M"),
2211
datetime.timedelta(weeks=4),
2212
frozenset((token_day, token_end)))
2213
token_year = Token(re.compile(r"(\d+)Y"),
2214
datetime.timedelta(weeks=52),
2215
frozenset((token_month, token_end)))
2216
token_week = Token(re.compile(r"(\d+)W"),
2217
datetime.timedelta(weeks=1),
2218
frozenset((token_end, )))
2219
token_duration = Token(re.compile(r"P"), None,
2220
frozenset((token_year, token_month,
2221
token_day, token_time,
2223
# Define starting values
2224
value = datetime.timedelta() # Value so far
2226
followers = frozenset((token_duration, )) # Following valid tokens
2227
s = duration # String left to parse
2228
# Loop until end token is found
2229
while found_token is not token_end:
2230
# Search for any currently valid tokens
2231
for token in followers:
2232
match = token.regexp.match(s)
2233
if match is not None:
2235
if token.value is not None:
2236
# Value found, parse digits
2237
factor = int(match.group(1), 10)
2238
# Add to value so far
2239
value += factor * token.value
2240
# Strip token from string
2241
s = token.regexp.sub("", s, 1)
2244
# Set valid next tokens
2245
followers = found_token.followers
2248
# No currently valid tokens were found
2249
raise ValueError("Invalid RFC 3339 duration: {!r}"
2255
2075
def string_to_delta(interval):
2256
2076
"""Parse a string and return a datetime.timedelta
2355
2170
parser.add_argument("--no-dbus", action="store_false",
2356
2171
dest="use_dbus", help="Do not provide D-Bus"
2357
" system bus interface", default=None)
2172
" system bus interface")
2358
2173
parser.add_argument("--no-ipv6", action="store_false",
2359
dest="use_ipv6", help="Do not use IPv6",
2174
dest="use_ipv6", help="Do not use IPv6")
2361
2175
parser.add_argument("--no-restore", action="store_false",
2362
2176
dest="restore", help="Do not restore stored"
2363
" state", default=None)
2364
parser.add_argument("--socket", type=int,
2365
help="Specify a file descriptor to a network"
2366
" socket to use instead of creating one")
2367
2178
parser.add_argument("--statedir", metavar="DIR",
2368
2179
help="Directory to save/restore state in")
2369
parser.add_argument("--foreground", action="store_true",
2370
help="Run in foreground", default=None)
2371
parser.add_argument("--no-zeroconf", action="store_false",
2372
dest="zeroconf", help="Do not use Zeroconf",
2375
2181
options = parser.parse_args()
2377
2183
if options.check:
2379
fail_count, test_count = doctest.testmod()
2380
sys.exit(os.EX_OK if fail_count == 0 else 1)
2382
2188
# Default values for config file for server-global settings
2383
2189
server_defaults = { "interface": "",
2386
2192
"debug": "False",
2388
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2389
":+SIGN-RSA-SHA224:+SIGN-RSA-RMD160",
2194
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2390
2195
"servicename": "Mandos",
2391
2196
"use_dbus": "True",
2392
2197
"use_ipv6": "True",
2393
2198
"debuglevel": "",
2394
2199
"restore": "True",
2396
"statedir": "/var/lib/mandos",
2397
"foreground": "False",
2200
"statedir": "/var/lib/mandos"
2401
2203
# Parse config file for server-global settings
2402
2204
server_config = configparser.SafeConfigParser(server_defaults)
2403
2205
del server_defaults
2404
server_config.read(os.path.join(options.configdir, "mandos.conf"))
2206
server_config.read(os.path.join(options.configdir,
2405
2208
# Convert the SafeConfigParser object to a dict
2406
2209
server_settings = server_config.defaults()
2407
2210
# Use the appropriate methods on the non-string config options
2408
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
2211
for option in ("debug", "use_dbus", "use_ipv6"):
2409
2212
server_settings[option] = server_config.getboolean("DEFAULT",
2411
2214
if server_settings["port"]:
2412
2215
server_settings["port"] = server_config.getint("DEFAULT",
2414
if server_settings["socket"]:
2415
server_settings["socket"] = server_config.getint("DEFAULT",
2417
# Later, stdin will, and stdout and stderr might, be dup'ed
2418
# over with an opened os.devnull. But we don't want this to
2419
# happen with a supplied network socket.
2420
if 0 <= server_settings["socket"] <= 2:
2421
server_settings["socket"] = os.dup(server_settings
2423
2217
del server_config
2425
2219
# Override the settings from the config file with command line
2426
2220
# options, if set.
2427
2221
for option in ("interface", "address", "port", "debug",
2428
"priority", "servicename", "configdir", "use_dbus",
2429
"use_ipv6", "debuglevel", "restore", "statedir",
2430
"socket", "foreground", "zeroconf"):
2222
"priority", "servicename", "configdir",
2223
"use_dbus", "use_ipv6", "debuglevel", "restore",
2431
2225
value = getattr(options, option)
2432
2226
if value is not None:
2433
2227
server_settings[option] = value
2435
2229
# Force all strings to be unicode
2436
2230
for option in server_settings.keys():
2437
if isinstance(server_settings[option], bytes):
2438
server_settings[option] = (server_settings[option]
2440
# Force all boolean options to be boolean
2441
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2442
"foreground", "zeroconf"):
2443
server_settings[option] = bool(server_settings[option])
2444
# Debug implies foreground
2445
if server_settings["debug"]:
2446
server_settings["foreground"] = True
2231
if type(server_settings[option]) is str:
2232
server_settings[option] = unicode(server_settings[option])
2447
2233
# Now we have our good server settings in "server_settings"
2449
2235
##################################################################
2451
if (not server_settings["zeroconf"]
2452
and not (server_settings["port"]
2453
or server_settings["socket"] != "")):
2454
parser.error("Needs port or socket to work without Zeroconf")
2456
2237
# For convenience
2457
2238
debug = server_settings["debug"]
2458
2239
debuglevel = server_settings["debuglevel"]
2487
2267
global mandos_dbus_service
2488
2268
mandos_dbus_service = None
2491
if server_settings["socket"] != "":
2492
socketfd = server_settings["socket"]
2493
tcp_server = MandosServer(
2494
(server_settings["address"], server_settings["port"]),
2496
interface=(server_settings["interface"] or None),
2498
gnutls_priority=server_settings["priority"],
2502
pidfilename = "/run/mandos.pid"
2503
if not os.path.isdir("/run/."):
2504
pidfilename = "/var/run/mandos.pid"
2270
tcp_server = MandosServer((server_settings["address"],
2271
server_settings["port"]),
2273
interface=(server_settings["interface"]
2277
server_settings["priority"],
2280
pidfilename = "/var/run/mandos.pid"
2507
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2282
pidfile = open(pidfilename, "w")
2508
2283
except IOError as e:
2509
2284
logger.error("Could not open file %r", pidfilename,
2566
2339
bus_name = dbus.service.BusName("se.recompile.Mandos",
2569
old_bus_name = dbus.service.BusName(
2570
"se.bsnet.fukt.Mandos", bus,
2572
except dbus.exceptions.DBusException as e:
2340
bus, do_not_queue=True)
2341
old_bus_name = (dbus.service.BusName
2342
("se.bsnet.fukt.Mandos", bus,
2344
except dbus.exceptions.NameExistsException as e:
2573
2345
logger.error("Disabling D-Bus:", exc_info=e)
2574
2346
use_dbus = False
2575
2347
server_settings["use_dbus"] = False
2576
2348
tcp_server.use_dbus = False
2578
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2579
service = AvahiServiceToSyslog(
2580
name = server_settings["servicename"],
2581
servicetype = "_mandos._tcp",
2582
protocol = protocol,
2584
if server_settings["interface"]:
2585
service.interface = if_nametoindex(
2586
server_settings["interface"].encode("utf-8"))
2349
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2350
service = AvahiServiceToSyslog(name =
2351
server_settings["servicename"],
2352
servicetype = "_mandos._tcp",
2353
protocol = protocol, bus = bus)
2354
if server_settings["interface"]:
2355
service.interface = (if_nametoindex
2356
(str(server_settings["interface"])))
2588
2358
global multiprocessing_manager
2589
2359
multiprocessing_manager = multiprocessing.Manager()
2596
2366
old_client_settings = {}
2597
2367
clients_data = {}
2599
# This is used to redirect stdout and stderr for checker processes
2601
wnull = open(os.devnull, "w") # A writable /dev/null
2602
# Only used if server is running in foreground but not in debug
2604
if debug or not foreground:
2607
2369
# Get client data and settings from last running state.
2608
2370
if server_settings["restore"]:
2610
2372
with open(stored_state_path, "rb") as stored_state:
2611
clients_data, old_client_settings = pickle.load(
2373
clients_data, old_client_settings = (pickle.load
2613
2375
os.remove(stored_state_path)
2614
2376
except IOError as e:
2615
2377
if e.errno == errno.ENOENT:
2616
logger.warning("Could not load persistent state:"
2617
" {}".format(os.strerror(e.errno)))
2378
logger.warning("Could not load persistent state: {0}"
2379
.format(os.strerror(e.errno)))
2619
2381
logger.critical("Could not load persistent state:",
2622
2384
except EOFError as e:
2623
2385
logger.warning("Could not load persistent state: "
2386
"EOFError:", exc_info=e)
2627
2388
with PGPEngine() as pgp:
2628
for client_name, client in clients_data.items():
2629
# Skip removed clients
2630
if client_name not in client_settings:
2389
for client_name, client in clients_data.iteritems():
2633
2390
# Decide which value to use after restoring saved state.
2634
2391
# We have three different values: Old config file,
2635
2392
# new config file, and saved state.
2656
2413
if datetime.datetime.utcnow() >= client["expires"]:
2657
2414
if not client["last_checked_ok"]:
2658
2415
logger.warning(
2659
"disabling client {} - Client never "
2660
"performed a successful checker".format(
2416
"disabling client {0} - Client never "
2417
"performed a successful checker"
2418
.format(client_name))
2662
2419
client["enabled"] = False
2663
2420
elif client["last_checker_status"] != 0:
2664
2421
logger.warning(
2665
"disabling client {} - Client last"
2666
" checker failed with error code"
2669
client["last_checker_status"]))
2422
"disabling client {0} - Client "
2423
"last checker failed with error code {1}"
2424
.format(client_name,
2425
client["last_checker_status"]))
2670
2426
client["enabled"] = False
2672
client["expires"] = (
2673
datetime.datetime.utcnow()
2674
+ client["timeout"])
2428
client["expires"] = (datetime.datetime
2430
+ client["timeout"])
2675
2431
logger.debug("Last checker succeeded,"
2676
" keeping {} enabled".format(
2432
" keeping {0} enabled"
2433
.format(client_name))
2679
client["secret"] = pgp.decrypt(
2680
client["encrypted_secret"],
2681
client_settings[client_name]["secret"])
2435
client["secret"] = (
2436
pgp.decrypt(client["encrypted_secret"],
2437
client_settings[client_name]
2682
2439
except PGPError:
2683
2440
# If decryption fails, we use secret from new settings
2684
logger.debug("Failed to decrypt {} old secret".format(
2686
client["secret"] = (client_settings[client_name]
2441
logger.debug("Failed to decrypt {0} old secret"
2442
.format(client_name))
2443
client["secret"] = (
2444
client_settings[client_name]["secret"])
2689
2446
# Add/remove clients based on new changes made to config
2690
2447
for client_name in (set(old_client_settings)
2695
2452
clients_data[client_name] = client_settings[client_name]
2697
2454
# Create all client objects
2698
for client_name, client in clients_data.items():
2455
for client_name, client in clients_data.iteritems():
2699
2456
tcp_server.clients[client_name] = client_class(
2702
server_settings = server_settings)
2457
name = client_name, settings = client)
2704
2459
if not tcp_server.clients:
2705
2460
logger.warning("No clients defined")
2708
if pidfile is not None:
2712
print(pid, file=pidfile)
2714
logger.error("Could not write to file %r with PID %d",
2466
pidfile.write(str(pid) + "\n".encode("utf-8"))
2469
logger.error("Could not write to file %r with PID %d",
2472
# "pidfile" was never created
2717
2474
del pidfilename
2475
signal.signal(signal.SIGINT, signal.SIG_IGN)
2719
2477
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2720
2478
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2724
@alternate_dbus_interfaces(
2725
{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
2481
@alternate_dbus_interfaces({"se.recompile.Mandos":
2482
"se.bsnet.fukt.Mandos"})
2726
2483
class MandosDBusService(DBusObjectWithProperties):
2727
2484
"""A D-Bus proxy object"""
2729
2485
def __init__(self):
2730
2486
dbus.service.Object.__init__(self, bus, "/")
2732
2487
_interface = "se.recompile.Mandos"
2734
2489
@dbus_interface_annotations(_interface)
2735
2490
def _foo(self):
2737
"org.freedesktop.DBus.Property.EmitsChangedSignal":
2491
return { "org.freedesktop.DBus.Property"
2492
".EmitsChangedSignal":
2740
2495
@dbus.service.signal(_interface, signature="o")
2741
2496
def ClientAdded(self, objpath):