101
88
except ImportError:
102
89
SO_BINDTODEVICE = None
104
if sys.version_info.major == 2:
108
92
stored_state_file = "clients.pickle"
110
94
logger = logging.getLogger()
95
syslogger = (logging.handlers.SysLogHandler
96
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
97
address = str("/dev/log")))
114
if_nametoindex = ctypes.cdll.LoadLibrary(
115
ctypes.util.find_library("c")).if_nametoindex
100
if_nametoindex = (ctypes.cdll.LoadLibrary
101
(ctypes.util.find_library("c"))
116
103
except (OSError, AttributeError):
118
104
def if_nametoindex(interface):
119
105
"Get an interface index the hard way, i.e. using fcntl()"
120
106
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
121
107
with contextlib.closing(socket.socket()) as s:
122
108
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
123
struct.pack(b"16s16x", interface))
124
interface_index = struct.unpack("I", ifreq[16:20])[0]
109
struct.pack(str("16s16x"),
111
interface_index = struct.unpack(str("I"),
125
113
return interface_index
128
116
def initlogger(debug, level=logging.WARNING):
129
117
"""init logger and add loglevel"""
132
syslogger = (logging.handlers.SysLogHandler(
133
facility = logging.handlers.SysLogHandler.LOG_DAEMON,
134
address = "/dev/log"))
135
119
syslogger.setFormatter(logging.Formatter
136
120
('Mandos [%(process)d]: %(levelname)s:'
189
174
def password_encode(self, password):
190
175
# Passphrase can not be empty and can not contain newlines or
191
176
# 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"))
177
return b"mandos" + binascii.hexlify(password)
200
179
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:
180
self.gnupg.passphrase = self.password_encode(password)
181
with open(os.devnull, "w") as devnull:
183
proc = self.gnupg.run(['--symmetric'],
184
create_fhs=['stdin', 'stdout'],
185
attach_fhs={'stderr': devnull})
186
with contextlib.closing(proc.handles['stdin']) as f:
188
with contextlib.closing(proc.handles['stdout']) as f:
189
ciphertext = f.read()
193
self.gnupg.passphrase = None
216
194
return ciphertext
218
196
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:
197
self.gnupg.passphrase = self.password_encode(password)
198
with open(os.devnull, "w") as devnull:
200
proc = self.gnupg.run(['--decrypt'],
201
create_fhs=['stdin', 'stdout'],
202
attach_fhs={'stderr': devnull})
203
with contextlib.closing(proc.handles['stdin']) as f:
205
with contextlib.closing(proc.handles['stdout']) as f:
206
decrypted_plaintext = f.read()
210
self.gnupg.passphrase = None
234
211
return decrypted_plaintext
237
214
class AvahiError(Exception):
238
215
def __init__(self, value, *args, **kwargs):
239
216
self.value = value
240
return super(AvahiError, self).__init__(value, *args,
217
super(AvahiError, self).__init__(value, *args, **kwargs)
218
def __unicode__(self):
219
return unicode(repr(self.value))
244
221
class AvahiServiceError(AvahiError):
248
224
class AvahiGroupError(AvahiError):
297
266
self.entry_group_state_changed_match = None
299
def rename(self, remove=True):
300
269
"""Derived from the Avahi example code"""
301
270
if self.rename_count >= self.max_renames:
302
271
logger.critical("No suitable Zeroconf service name found"
303
272
" after %i retries, exiting.",
304
273
self.rename_count)
305
274
raise AvahiServiceError("Too many renames")
307
self.server.GetAlternativeServiceName(self.name))
308
self.rename_count += 1
275
self.name = unicode(self.server
276
.GetAlternativeServiceName(self.name))
309
277
logger.info("Changing Zeroconf service name to %r ...",
315
282
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)
283
logger.critical("D-Bus Exception", exc_info=error)
286
self.rename_count += 1
325
288
def remove(self):
326
289
"""Derived from the Avahi example code"""
381
345
def server_state_changed(self, state, error=None):
382
346
"""Derived from the Avahi example code"""
383
347
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",
348
bad_states = { avahi.SERVER_INVALID:
349
"Zeroconf server invalid",
350
avahi.SERVER_REGISTERING: None,
351
avahi.SERVER_COLLISION:
352
"Zeroconf server name collision",
353
avahi.SERVER_FAILURE:
354
"Zeroconf server failure" }
390
355
if state in bad_states:
391
356
if bad_states[state] is not None:
392
357
if error is None:
411
376
follow_name_owner_changes=True),
412
377
avahi.DBUS_INTERFACE_SERVER)
413
378
self.server.connect_to_signal("StateChanged",
414
self.server_state_changed)
379
self.server_state_changed)
415
380
self.server_state_changed(self.server.GetState())
418
382
class AvahiServiceToSyslog(AvahiService):
419
def rename(self, *args, **kwargs):
420
384
"""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'
385
ret = AvahiService.rename(self)
386
syslogger.setFormatter(logging.Formatter
387
('Mandos ({0}) [%(process)d]:'
388
' %(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))
392
def timedelta_to_milliseconds(td):
393
"Convert a datetime.timedelta() to milliseconds"
394
return ((td.days * 24 * 60 * 60 * 1000)
395
+ (td.seconds * 1000)
396
+ (td.microseconds // 1000))
437
398
class Client(object):
438
399
"""A representation of a client host served by this server.
477
436
runtime_expansions: Allowed attributes for runtime expansion.
478
437
expires: datetime.datetime(); time (UTC) when a client will be
479
438
disabled, or None
480
server_settings: The server_settings dict from main()
483
441
runtime_expansions = ("approval_delay", "approval_duration",
484
"created", "enabled", "expires",
485
"fingerprint", "host", "interval",
486
"last_approval_request", "last_checked_ok",
442
"created", "enabled", "fingerprint",
443
"host", "interval", "last_checked_ok",
487
444
"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",
445
client_defaults = { "timeout": "5m",
446
"extended_timeout": "15m",
448
"checker": "fping -q -- %%(host)s",
450
"approval_delay": "0s",
451
"approval_duration": "1s",
452
"approved_by_default": "True",
456
def timeout_milliseconds(self):
457
"Return the 'timeout' attribute in milliseconds"
458
return timedelta_to_milliseconds(self.timeout)
460
def extended_timeout_milliseconds(self):
461
"Return the 'extended_timeout' attribute in milliseconds"
462
return timedelta_to_milliseconds(self.extended_timeout)
464
def interval_milliseconds(self):
465
"Return the 'interval' attribute in milliseconds"
466
return timedelta_to_milliseconds(self.interval)
468
def approval_delay_milliseconds(self):
469
return timedelta_to_milliseconds(self.approval_delay)
501
472
def config_parser(config):
579
547
self.current_checker_command = None
580
548
self.approved = None
581
549
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()
550
self.changedstate = (multiprocessing_manager
551
.Condition(multiprocessing_manager
553
self.client_structure = [attr for attr in
554
self.__dict__.iterkeys()
586
555
if not attr.startswith("_")]
587
556
self.client_structure.append("client_structure")
589
for name, t in inspect.getmembers(
590
type(self), lambda obj: isinstance(obj, property)):
558
for name, t in inspect.getmembers(type(self),
591
562
if not name.startswith("_"):
592
563
self.client_structure.append(name)
635
606
# and every interval from then on.
636
607
if self.checker_initiator_tag is not None:
637
608
gobject.source_remove(self.checker_initiator_tag)
638
self.checker_initiator_tag = gobject.timeout_add(
639
int(self.interval.total_seconds() * 1000),
609
self.checker_initiator_tag = (gobject.timeout_add
610
(self.interval_milliseconds(),
641
612
# Schedule a disable() when 'timeout' has passed
642
613
if self.disable_initiator_tag is not None:
643
614
gobject.source_remove(self.disable_initiator_tag)
644
self.disable_initiator_tag = gobject.timeout_add(
645
int(self.timeout.total_seconds() * 1000), self.disable)
615
self.disable_initiator_tag = (gobject.timeout_add
616
(self.timeout_milliseconds(),
646
618
# Also start a new checker *right now*.
647
619
self.start_checker()
649
def checker_callback(self, source, condition, connection,
621
def checker_callback(self, pid, condition, command):
651
622
"""The checker has completed, so take appropriate actions."""
652
623
self.checker_callback_tag = None
653
624
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
625
if os.WIFEXITED(condition):
626
self.last_checker_status = os.WEXITSTATUS(condition)
661
627
if self.last_checker_status == 0:
662
628
logger.info("Checker for %(name)s succeeded",
664
630
self.checked_ok()
666
logger.info("Checker for %(name)s failed", vars(self))
632
logger.info("Checker for %(name)s failed",
668
635
self.last_checker_status = -1
669
self.last_checker_signal = -returncode
670
636
logger.warning("Checker for %(name)s crashed?",
674
639
def checked_ok(self):
675
640
"""Assert that the client has been seen, alive and well."""
676
641
self.last_checked_ok = datetime.datetime.utcnow()
677
642
self.last_checker_status = 0
678
self.last_checker_signal = None
679
643
self.bump_timeout()
681
645
def bump_timeout(self, timeout=None):
707
672
# 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")
675
# If a checker exists, make sure it is not a zombie
677
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
678
except (AttributeError, OSError) as error:
679
if (isinstance(error, OSError)
680
and error.errno != errno.ECHILD):
684
logger.warning("Checker was a zombie")
685
gobject.source_remove(self.checker_callback_tag)
686
self.checker_callback(pid, status,
687
self.current_checker_command)
714
688
# Start a new checker if needed
715
689
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,
691
# In case checker_command has exactly one % operator
692
command = self.checker_command % self.host
694
# Escape attributes for the shell
695
escaped_attrs = dict(
697
re.escape(unicode(str(getattr(self, attr, "")),
701
self.runtime_expansions)
704
command = self.checker_command % escaped_attrs
705
except TypeError as error:
706
logger.error('Could not format string "%s"',
707
self.checker_command, exc_info=error)
708
return True # Try again later
709
self.current_checker_command = command
711
logger.info("Starting checker %r for %s",
713
# We don't need to redirect stdout and stderr, since
714
# in normal mode, that is already done by daemon(),
715
# and in debug mode we don't want to. (Stdin is
716
# always replaced by /dev/null.)
717
self.checker = subprocess.Popen(command,
720
self.checker_callback_tag = (gobject.child_watch_add
722
self.checker_callback,
724
# The checker may have completed before the gobject
725
# watch was added. Check for this.
726
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
728
gobject.source_remove(self.checker_callback_tag)
729
self.checker_callback(pid, status, command)
730
except OSError as error:
731
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
733
# Re-run this periodically if run by gobject.timeout_add
824
805
"""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
808
@dbus_service_property("org.example.Interface", signature="b",
810
@dbus_annotations({{"org.freedesktop.DBus.Deprecated": "true",
811
"org.freedesktop.DBus.Property."
812
"EmitsChangedSignal": "false"})
832
813
def Property_dbus_property(self):
833
814
return dbus.Boolean(False)
836
816
def decorator(func):
837
817
func._dbus_annotations = annotations
843
822
class DBusPropertyException(dbus.exceptions.DBusException):
844
823
"""A base class for D-Bus property-related exceptions
825
def __unicode__(self):
826
return unicode(str(self))
849
829
class DBusPropertyAccessException(DBusPropertyException):
873
853
If called like _is_dbus_thing("method") it returns a function
874
854
suitable for use as predicate to inspect.getmembers().
876
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
856
return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),
879
859
def _get_all_dbus_things(self, thing):
880
860
"""Returns a generator of (name, attribute) pairs
882
return ((getattr(athing.__get__(self), "_dbus_name", name),
862
return ((getattr(athing.__get__(self), "_dbus_name",
883
864
athing.__get__(self))
884
865
for cls in self.__class__.__mro__
885
866
for name, athing in
886
inspect.getmembers(cls, self._is_dbus_thing(thing)))
867
inspect.getmembers(cls,
868
self._is_dbus_thing(thing)))
888
870
def _get_dbus_property(self, interface_name, property_name):
889
871
"""Returns a bound method if one exists which is a D-Bus
890
872
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")):
874
for cls in self.__class__.__mro__:
875
for name, value in (inspect.getmembers
877
self._is_dbus_thing("property"))):
895
878
if (value._dbus_name == property_name
896
879
and value._dbus_interface == interface_name):
897
880
return value.__get__(self)
899
882
# No such property
900
raise DBusPropertyNotFound("{}:{}.{}".format(
901
self.dbus_object_path, interface_name, property_name))
883
raise DBusPropertyNotFound(self.dbus_object_path + ":"
884
+ interface_name + "."
903
@dbus.service.method(dbus.PROPERTIES_IFACE,
887
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
905
888
out_signature="v")
906
889
def Get(self, interface_name, property_name):
907
890
"""Standard D-Bus property Get() method, see D-Bus standard.
1089
1061
# Ignore non-D-Bus attributes, and D-Bus attributes
1090
1062
# with the wrong interface name
1091
1063
if (not hasattr(attribute, "_dbus_interface")
1092
or not attribute._dbus_interface.startswith(
1093
orig_interface_name)):
1064
or not attribute._dbus_interface
1065
.startswith(orig_interface_name)):
1095
1067
# Create an alternate D-Bus interface name based on
1096
1068
# the current name
1097
alt_interface = attribute._dbus_interface.replace(
1098
orig_interface_name, alt_interface_name)
1069
alt_interface = (attribute._dbus_interface
1070
.replace(orig_interface_name,
1071
alt_interface_name))
1099
1072
interface_names.add(alt_interface)
1100
1073
# Is this a D-Bus signal?
1101
1074
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(
1075
# Extract the original non-method function by
1077
nonmethod_func = (dict(
1106
1078
zip(attribute.func_code.co_freevars,
1107
attribute.__closure__))
1108
["func"].cell_contents)
1110
nonmethod_func = attribute
1079
attribute.__closure__))["func"]
1111
1081
# Create a new, but exactly alike, function
1112
1082
# object, and decorate it to be a new D-Bus signal
1113
1083
# 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))
1084
new_function = (dbus.service.signal
1086
attribute._dbus_signature)
1087
(types.FunctionType(
1088
nonmethod_func.func_code,
1089
nonmethod_func.func_globals,
1090
nonmethod_func.func_name,
1091
nonmethod_func.func_defaults,
1092
nonmethod_func.func_closure)))
1131
1093
# Copy annotations, if any
1133
new_function._dbus_annotations = dict(
1134
attribute._dbus_annotations)
1095
new_function._dbus_annotations = (
1096
dict(attribute._dbus_annotations))
1135
1097
except AttributeError:
1137
1099
# Define a creator of a function to call both the
1159
1119
# object. Decorate it to be a new D-Bus method
1160
1120
# with the alternate D-Bus interface name. Add it
1161
1121
# 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)))
1122
attr[attrname] = (dbus.service.method
1124
attribute._dbus_in_signature,
1125
attribute._dbus_out_signature)
1127
(attribute.func_code,
1128
attribute.func_globals,
1129
attribute.func_name,
1130
attribute.func_defaults,
1131
attribute.func_closure)))
1172
1132
# Copy annotations, if any
1174
attr[attrname]._dbus_annotations = dict(
1175
attribute._dbus_annotations)
1134
attr[attrname]._dbus_annotations = (
1135
dict(attribute._dbus_annotations))
1176
1136
except AttributeError:
1178
1138
# Is this a D-Bus property?
1181
1141
# object, and decorate it to be a new D-Bus
1182
1142
# property with the alternate D-Bus interface
1183
1143
# 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)))
1144
attr[attrname] = (dbus_service_property
1146
attribute._dbus_signature,
1147
attribute._dbus_access,
1149
._dbus_get_args_options
1152
(attribute.func_code,
1153
attribute.func_globals,
1154
attribute.func_name,
1155
attribute.func_defaults,
1156
attribute.func_closure)))
1195
1157
# Copy annotations, if any
1197
attr[attrname]._dbus_annotations = dict(
1198
attribute._dbus_annotations)
1159
attr[attrname]._dbus_annotations = (
1160
dict(attribute._dbus_annotations))
1199
1161
except AttributeError:
1201
1163
# Is this a D-Bus interface?
1204
1166
# object. Decorate it to be a new D-Bus interface
1205
1167
# with the alternate D-Bus interface name. Add it
1206
1168
# to the class.
1208
dbus_interface_annotations(alt_interface)
1209
(types.FunctionType(attribute.func_code,
1210
attribute.func_globals,
1211
attribute.func_name,
1212
attribute.func_defaults,
1213
attribute.func_closure)))
1169
attr[attrname] = (dbus_interface_annotations
1172
(attribute.func_code,
1173
attribute.func_globals,
1174
attribute.func_name,
1175
attribute.func_defaults,
1176
attribute.func_closure)))
1215
1178
# Deprecate all alternate interfaces
1216
iname="_AlternateDBusNames_interface_annotation{}"
1179
iname="_AlternateDBusNames_interface_annotation{0}"
1217
1180
for interface_name in interface_names:
1219
1181
@dbus_interface_annotations(interface_name)
1220
1182
def func(self):
1221
1183
return { "org.freedesktop.DBus.Deprecated":
1223
1185
# Find an unused name
1224
1186
for aname in (iname.format(i)
1225
1187
for i in itertools.count()):
1258
1217
Client.__init__(self, *args, **kwargs)
1259
1218
# Only now, when this client is initialized, can it show up on
1261
client_object_name = str(self.name).translate(
1220
client_object_name = unicode(self.name).translate(
1262
1221
{ord("."): ord("_"),
1263
1222
ord("-"): ord("_")})
1264
self.dbus_object_path = dbus.ObjectPath(
1265
"/clients/" + client_object_name)
1223
self.dbus_object_path = (dbus.ObjectPath
1224
("/clients/" + client_object_name))
1266
1225
DBusObjectWithProperties.__init__(self, self.bus,
1267
1226
self.dbus_object_path)
1269
def notifychangeproperty(transform_func, dbus_name,
1270
type_func=lambda x: x,
1272
invalidate_only=False,
1273
_interface=_interface):
1228
def notifychangeproperty(transform_func,
1229
dbus_name, type_func=lambda x: x,
1274
1231
""" Modify a variable so that it's a property which announces
1275
1232
its changes to DBus.
1281
1238
to the D-Bus. Default: no transform
1282
1239
variant_level: D-Bus variant level. Default: 1
1284
attrname = "_{}".format(dbus_name)
1241
attrname = "_{0}".format(dbus_name)
1286
1242
def setter(self, value):
1287
1243
if hasattr(self, "dbus_object_path"):
1288
1244
if (not hasattr(self, attrname) or
1289
1245
type_func(getattr(self, attrname, None))
1290
1246
!= 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):
1247
dbus_value = transform_func(type_func(value),
1250
self.PropertyChanged(dbus.String(dbus_name),
1306
1252
setattr(self, attrname, value)
1308
1254
return property(lambda self: getattr(self, attrname), setter)
1325
1271
datetime_to_dbus, "LastApprovalRequest")
1326
1272
approved_by_default = notifychangeproperty(dbus.Boolean,
1327
1273
"ApprovedByDefault")
1328
approval_delay = notifychangeproperty(
1329
dbus.UInt64, "ApprovalDelay",
1330
type_func = lambda td: td.total_seconds() * 1000)
1274
approval_delay = notifychangeproperty(dbus.UInt64,
1277
timedelta_to_milliseconds)
1331
1278
approval_duration = notifychangeproperty(
1332
1279
dbus.UInt64, "ApprovalDuration",
1333
type_func = lambda td: td.total_seconds() * 1000)
1280
type_func = timedelta_to_milliseconds)
1334
1281
host = notifychangeproperty(dbus.String, "Host")
1335
timeout = notifychangeproperty(
1336
dbus.UInt64, "Timeout",
1337
type_func = lambda td: td.total_seconds() * 1000)
1282
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1284
timedelta_to_milliseconds)
1338
1285
extended_timeout = notifychangeproperty(
1339
1286
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)
1287
type_func = timedelta_to_milliseconds)
1288
interval = notifychangeproperty(dbus.UInt64,
1291
timedelta_to_milliseconds)
1344
1292
checker_command = notifychangeproperty(dbus.String, "Checker")
1345
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1346
invalidate_only=True)
1348
1294
del notifychangeproperty
1356
1302
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1357
1303
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
1305
def checker_callback(self, pid, condition, command,
1307
self.checker_callback_tag = None
1309
if os.WIFEXITED(condition):
1310
exitstatus = os.WEXITSTATUS(condition)
1366
1311
# Emit D-Bus signal
1367
1312
self.CheckerCompleted(dbus.Int16(exitstatus),
1313
dbus.Int64(condition),
1369
1314
dbus.String(command))
1371
1316
# Emit D-Bus signal
1372
1317
self.CheckerCompleted(dbus.Int16(-1),
1374
self.last_checker_signal),
1318
dbus.Int64(condition),
1375
1319
dbus.String(command))
1321
return Client.checker_callback(self, pid, condition, command,
1378
1324
def start_checker(self, *args, **kwargs):
1379
old_checker_pid = getattr(self.checker, "pid", None)
1325
old_checker = self.checker
1326
if self.checker is not None:
1327
old_checker_pid = self.checker.pid
1329
old_checker_pid = None
1380
1330
r = Client.start_checker(self, *args, **kwargs)
1381
1331
# Only if new checker process was started
1382
1332
if (self.checker is not None
1493
1448
self.approved_by_default = bool(value)
1495
1450
# ApprovalDelay - property
1496
@dbus_service_property(_interface,
1451
@dbus_service_property(_interface, signature="t",
1498
1452
access="readwrite")
1499
1453
def ApprovalDelay_dbus_property(self, value=None):
1500
1454
if value is None: # get
1501
return dbus.UInt64(self.approval_delay.total_seconds()
1455
return dbus.UInt64(self.approval_delay_milliseconds())
1503
1456
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1505
1458
# ApprovalDuration - property
1506
@dbus_service_property(_interface,
1459
@dbus_service_property(_interface, signature="t",
1508
1460
access="readwrite")
1509
1461
def ApprovalDuration_dbus_property(self, value=None):
1510
1462
if value is None: # get
1511
return dbus.UInt64(self.approval_duration.total_seconds()
1463
return dbus.UInt64(timedelta_to_milliseconds(
1464
self.approval_duration))
1513
1465
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1515
1467
# Name - property
1601
1550
gobject.source_remove(self.disable_initiator_tag)
1602
self.disable_initiator_tag = gobject.timeout_add(
1603
int((self.expires - now).total_seconds() * 1000),
1551
self.disable_initiator_tag = (
1552
gobject.timeout_add(
1553
timedelta_to_milliseconds(self.expires - now),
1606
1556
# ExtendedTimeout - property
1607
@dbus_service_property(_interface,
1557
@dbus_service_property(_interface, signature="t",
1609
1558
access="readwrite")
1610
1559
def ExtendedTimeout_dbus_property(self, value=None):
1611
1560
if value is None: # get
1612
return dbus.UInt64(self.extended_timeout.total_seconds()
1561
return dbus.UInt64(self.extended_timeout_milliseconds())
1614
1562
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1616
1564
# Interval - property
1617
@dbus_service_property(_interface,
1565
@dbus_service_property(_interface, signature="t",
1619
1566
access="readwrite")
1620
1567
def Interval_dbus_property(self, value=None):
1621
1568
if value is None: # get
1622
return dbus.UInt64(self.interval.total_seconds() * 1000)
1569
return dbus.UInt64(self.interval_milliseconds())
1623
1570
self.interval = datetime.timedelta(0, 0, 0, value)
1624
1571
if getattr(self, "checker_initiator_tag", None) is None:
1626
1573
if self.enabled:
1627
1574
# Reschedule checker run
1628
1575
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
1576
self.checker_initiator_tag = (gobject.timeout_add
1577
(value, self.start_checker))
1578
self.start_checker() # Start one now, too
1633
1580
# Checker - property
1634
@dbus_service_property(_interface,
1581
@dbus_service_property(_interface, signature="s",
1636
1582
access="readwrite")
1637
1583
def Checker_dbus_property(self, value=None):
1638
1584
if value is None: # get
1639
1585
return dbus.String(self.checker_command)
1640
self.checker_command = str(value)
1586
self.checker_command = unicode(value)
1642
1588
# CheckerRunning - property
1643
@dbus_service_property(_interface,
1589
@dbus_service_property(_interface, signature="b",
1645
1590
access="readwrite")
1646
1591
def CheckerRunning_dbus_property(self, value=None):
1647
1592
if value is None: # get
1872
1818
def fingerprint(openpgp):
1873
1819
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1874
1820
# 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)))
1821
datum = (gnutls.library.types
1822
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1825
ctypes.c_uint(len(openpgp))))
1879
1826
# New empty GnuTLS certificate
1880
1827
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1881
gnutls.library.functions.gnutls_openpgp_crt_init(
1828
(gnutls.library.functions
1829
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
1883
1830
# 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)
1831
(gnutls.library.functions
1832
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1833
gnutls.library.constants
1834
.GNUTLS_OPENPGP_FMT_RAW))
1887
1835
# Verify the self signature in the key
1888
1836
crtverify = ctypes.c_uint()
1889
gnutls.library.functions.gnutls_openpgp_crt_verify_self(
1890
crt, 0, ctypes.byref(crtverify))
1837
(gnutls.library.functions
1838
.gnutls_openpgp_crt_verify_self(crt, 0,
1839
ctypes.byref(crtverify)))
1891
1840
if crtverify.value != 0:
1892
1841
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1893
raise gnutls.errors.CertificateSecurityError(
1842
raise (gnutls.errors.CertificateSecurityError
1895
1844
# New buffer for the fingerprint
1896
1845
buf = ctypes.create_string_buffer(20)
1897
1846
buf_len = ctypes.c_size_t()
1898
1847
# 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))
1848
(gnutls.library.functions
1849
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1850
ctypes.byref(buf_len)))
1901
1851
# Deinit the certificate
1902
1852
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1903
1853
# Convert the buffer to a Python bytestring
1954
1902
interface: None or a network interface name (string)
1955
1903
use_ipv6: Boolean; to use IPv6 or not
1958
1905
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().
1906
interface=None, use_ipv6=True):
1965
1907
self.interface = interface
1967
1909
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
1910
socketserver.TCPServer.__init__(self, server_address,
1995
1911
RequestHandlerClass)
1997
1912
def server_bind(self):
1998
1913
"""This overrides the normal server_bind() function
1999
1914
to bind to an interface if one was specified, and also NOT to
2005
1920
self.interface)
2008
self.socket.setsockopt(
2009
socket.SOL_SOCKET, SO_BINDTODEVICE,
2010
(self.interface + "\0").encode("utf-8"))
1923
self.socket.setsockopt(socket.SOL_SOCKET,
2011
1927
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:
1928
if error[0] == errno.EPERM:
1929
logger.error("No permission to"
1930
" bind to interface %s",
1932
elif error[0] == errno.ENOPROTOOPT:
2016
1933
logger.error("SO_BINDTODEVICE not available;"
2017
1934
" cannot bind to interface %s",
2018
1935
self.interface)
2019
elif error.errno == errno.ENODEV:
2020
logger.error("Interface %s does not exist,"
2021
" cannot bind", self.interface)
2024
1938
# Only bind(2) the socket if we really need to.
2081
1989
def add_pipe(self, parent_pipe, proc):
2082
1990
# 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,
1991
gobject.io_add_watch(parent_pipe.fileno(),
1992
gobject.IO_IN | gobject.IO_HUP,
1993
functools.partial(self.handle_ipc,
2090
def handle_ipc(self, source, condition,
2093
client_object=None):
1998
def handle_ipc(self, source, condition, parent_pipe=None,
1999
proc = None, client_object=None):
2094
2000
# error, or the other end of multiprocessing.Pipe has closed
2095
2001
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2096
2002
# 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
2065
def string_to_delta(interval):
2256
2066
"""Parse a string and return a datetime.timedelta
2355
2160
parser.add_argument("--no-dbus", action="store_false",
2356
2161
dest="use_dbus", help="Do not provide D-Bus"
2357
" system bus interface", default=None)
2162
" system bus interface")
2358
2163
parser.add_argument("--no-ipv6", action="store_false",
2359
dest="use_ipv6", help="Do not use IPv6",
2164
dest="use_ipv6", help="Do not use IPv6")
2361
2165
parser.add_argument("--no-restore", action="store_false",
2362
2166
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
2168
parser.add_argument("--statedir", metavar="DIR",
2368
2169
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
2171
options = parser.parse_args()
2377
2173
if options.check:
2379
fail_count, test_count = doctest.testmod()
2380
sys.exit(os.EX_OK if fail_count == 0 else 1)
2382
2178
# Default values for config file for server-global settings
2383
2179
server_defaults = { "interface": "",
2386
2182
"debug": "False",
2388
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2389
":+SIGN-RSA-SHA224:+SIGN-RSA-RMD160",
2184
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2390
2185
"servicename": "Mandos",
2391
2186
"use_dbus": "True",
2392
2187
"use_ipv6": "True",
2393
2188
"debuglevel": "",
2394
2189
"restore": "True",
2396
"statedir": "/var/lib/mandos",
2397
"foreground": "False",
2190
"statedir": "/var/lib/mandos"
2401
2193
# Parse config file for server-global settings
2402
2194
server_config = configparser.SafeConfigParser(server_defaults)
2403
2195
del server_defaults
2404
server_config.read(os.path.join(options.configdir, "mandos.conf"))
2196
server_config.read(os.path.join(options.configdir,
2405
2198
# Convert the SafeConfigParser object to a dict
2406
2199
server_settings = server_config.defaults()
2407
2200
# Use the appropriate methods on the non-string config options
2408
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
2201
for option in ("debug", "use_dbus", "use_ipv6"):
2409
2202
server_settings[option] = server_config.getboolean("DEFAULT",
2411
2204
if server_settings["port"]:
2412
2205
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
2207
del server_config
2425
2209
# Override the settings from the config file with command line
2426
2210
# options, if set.
2427
2211
for option in ("interface", "address", "port", "debug",
2428
"priority", "servicename", "configdir", "use_dbus",
2429
"use_ipv6", "debuglevel", "restore", "statedir",
2430
"socket", "foreground", "zeroconf"):
2212
"priority", "servicename", "configdir",
2213
"use_dbus", "use_ipv6", "debuglevel", "restore",
2431
2215
value = getattr(options, option)
2432
2216
if value is not None:
2433
2217
server_settings[option] = value
2435
2219
# Force all strings to be unicode
2436
2220
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
2221
if type(server_settings[option]) is str:
2222
server_settings[option] = unicode(server_settings[option])
2447
2223
# Now we have our good server settings in "server_settings"
2449
2225
##################################################################
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
2227
# For convenience
2457
2228
debug = server_settings["debug"]
2458
2229
debuglevel = server_settings["debuglevel"]
2487
2257
global mandos_dbus_service
2488
2258
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"
2260
tcp_server = MandosServer((server_settings["address"],
2261
server_settings["port"]),
2263
interface=(server_settings["interface"]
2267
server_settings["priority"],
2270
pidfilename = "/var/run/mandos.pid"
2507
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2272
pidfile = open(pidfilename, "w")
2508
2273
except IOError as e:
2509
2274
logger.error("Could not open file %r", pidfilename,
2566
2329
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:
2330
bus, do_not_queue=True)
2331
old_bus_name = (dbus.service.BusName
2332
("se.bsnet.fukt.Mandos", bus,
2334
except dbus.exceptions.NameExistsException as e:
2573
2335
logger.error("Disabling D-Bus:", exc_info=e)
2574
2336
use_dbus = False
2575
2337
server_settings["use_dbus"] = False
2576
2338
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"))
2339
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2340
service = AvahiServiceToSyslog(name =
2341
server_settings["servicename"],
2342
servicetype = "_mandos._tcp",
2343
protocol = protocol, bus = bus)
2344
if server_settings["interface"]:
2345
service.interface = (if_nametoindex
2346
(str(server_settings["interface"])))
2588
2348
global multiprocessing_manager
2589
2349
multiprocessing_manager = multiprocessing.Manager()
2596
2356
old_client_settings = {}
2597
2357
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
2359
# Get client data and settings from last running state.
2608
2360
if server_settings["restore"]:
2610
2362
with open(stored_state_path, "rb") as stored_state:
2611
clients_data, old_client_settings = pickle.load(
2363
clients_data, old_client_settings = (pickle.load
2613
2365
os.remove(stored_state_path)
2614
2366
except IOError as e:
2615
2367
if e.errno == errno.ENOENT:
2616
logger.warning("Could not load persistent state:"
2617
" {}".format(os.strerror(e.errno)))
2368
logger.warning("Could not load persistent state: {0}"
2369
.format(os.strerror(e.errno)))
2619
2371
logger.critical("Could not load persistent state:",
2622
2374
except EOFError as e:
2623
2375
logger.warning("Could not load persistent state: "
2376
"EOFError:", exc_info=e)
2627
2378
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:
2379
for client_name, client in clients_data.iteritems():
2633
2380
# Decide which value to use after restoring saved state.
2634
2381
# We have three different values: Old config file,
2635
2382
# new config file, and saved state.
2656
2403
if datetime.datetime.utcnow() >= client["expires"]:
2657
2404
if not client["last_checked_ok"]:
2658
2405
logger.warning(
2659
"disabling client {} - Client never "
2660
"performed a successful checker".format(
2406
"disabling client {0} - Client never "
2407
"performed a successful checker"
2408
.format(client_name))
2662
2409
client["enabled"] = False
2663
2410
elif client["last_checker_status"] != 0:
2664
2411
logger.warning(
2665
"disabling client {} - Client last"
2666
" checker failed with error code"
2669
client["last_checker_status"]))
2412
"disabling client {0} - Client "
2413
"last checker failed with error code {1}"
2414
.format(client_name,
2415
client["last_checker_status"]))
2670
2416
client["enabled"] = False
2672
client["expires"] = (
2673
datetime.datetime.utcnow()
2674
+ client["timeout"])
2418
client["expires"] = (datetime.datetime
2420
+ client["timeout"])
2675
2421
logger.debug("Last checker succeeded,"
2676
" keeping {} enabled".format(
2422
" keeping {0} enabled"
2423
.format(client_name))
2679
client["secret"] = pgp.decrypt(
2680
client["encrypted_secret"],
2681
client_settings[client_name]["secret"])
2425
client["secret"] = (
2426
pgp.decrypt(client["encrypted_secret"],
2427
client_settings[client_name]
2682
2429
except PGPError:
2683
2430
# 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]
2431
logger.debug("Failed to decrypt {0} old secret"
2432
.format(client_name))
2433
client["secret"] = (
2434
client_settings[client_name]["secret"])
2689
2436
# Add/remove clients based on new changes made to config
2690
2437
for client_name in (set(old_client_settings)
2695
2442
clients_data[client_name] = client_settings[client_name]
2697
2444
# Create all client objects
2698
for client_name, client in clients_data.items():
2445
for client_name, client in clients_data.iteritems():
2699
2446
tcp_server.clients[client_name] = client_class(
2702
server_settings = server_settings)
2447
name = client_name, settings = client)
2704
2449
if not tcp_server.clients:
2705
2450
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",
2456
pidfile.write(str(pid) + "\n".encode("utf-8"))
2459
logger.error("Could not write to file %r with PID %d",
2462
# "pidfile" was never created
2717
2464
del pidfilename
2465
signal.signal(signal.SIGINT, signal.SIG_IGN)
2719
2467
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2720
2468
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2724
@alternate_dbus_interfaces(
2725
{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
2471
@alternate_dbus_interfaces({"se.recompile.Mandos":
2472
"se.bsnet.fukt.Mandos"})
2726
2473
class MandosDBusService(DBusObjectWithProperties):
2727
2474
"""A D-Bus proxy object"""
2729
2475
def __init__(self):
2730
2476
dbus.service.Object.__init__(self, bus, "/")
2732
2477
_interface = "se.recompile.Mandos"
2734
2479
@dbus_interface_annotations(_interface)
2735
2480
def _foo(self):
2737
"org.freedesktop.DBus.Property.EmitsChangedSignal":
2481
return { "org.freedesktop.DBus.Property"
2482
".EmitsChangedSignal":
2740
2485
@dbus.service.signal(_interface, signature="o")
2741
2486
def ClientAdded(self, objpath):
2824
2568
del client_settings[client.name]["secret"]
2827
with tempfile.NamedTemporaryFile(
2831
dir=os.path.dirname(stored_state_path),
2832
delete=False) as stored_state:
2571
with (tempfile.NamedTemporaryFile
2572
(mode='wb', suffix=".pickle", prefix='clients-',
2573
dir=os.path.dirname(stored_state_path),
2574
delete=False)) as stored_state:
2833
2575
pickle.dump((clients, client_settings), stored_state)
2834
tempname = stored_state.name
2576
tempname=stored_state.name
2835
2577
os.rename(tempname, stored_state_path)
2836
2578
except (IOError, OSError) as e: