11
11
# "AvahiService" class, and some lines in "main".
13
13
# Everything else is
14
# Copyright © 2008-2014 Teddy Hogeborn
15
# Copyright © 2008-2014 Björn Påhlsson
14
# Copyright © 2008-2015 Teddy Hogeborn
15
# Copyright © 2008-2015 Björn Påhlsson
17
17
# This program is free software: you can redistribute it and/or modify
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18
# it under the terms of the GNU General Public License as published by
101
if_nametoindex = (ctypes.cdll.LoadLibrary
102
(ctypes.util.find_library("c"))
101
if_nametoindex = ctypes.cdll.LoadLibrary(
102
ctypes.util.find_library("c")).if_nametoindex
104
103
except (OSError, AttributeError):
105
105
def if_nametoindex(interface):
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106
"Get an interface index the hard way, i.e. using fcntl()"
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107
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
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"""init logger and add loglevel"""
119
syslogger = (logging.handlers.SysLogHandler
121
logging.handlers.SysLogHandler.LOG_DAEMON,
122
address = "/dev/log"))
119
syslogger = (logging.handlers.SysLogHandler(
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facility = logging.handlers.SysLogHandler.LOG_DAEMON,
121
address = "/dev/log"))
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syslogger.setFormatter(logging.Formatter
124
123
('Mandos [%(process)d]: %(levelname)s:'
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def encrypt(self, data, password):
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passphrase = self.password_encode(password)
189
with tempfile.NamedTemporaryFile(dir=self.tempdir
189
with tempfile.NamedTemporaryFile(
190
dir=self.tempdir) as passfile:
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passfile.write(passphrase)
193
193
proc = subprocess.Popen(['gpg', '--symmetric',
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def decrypt(self, data, password):
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passphrase = self.password_encode(password)
207
with tempfile.NamedTemporaryFile(dir = self.tempdir
207
with tempfile.NamedTemporaryFile(
208
dir = self.tempdir) as passfile:
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passfile.write(passphrase)
211
211
proc = subprocess.Popen(['gpg', '--decrypt',
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257
bus: dbus.SystemBus()
259
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
260
servicetype = None, port = None, TXT = None,
261
domain = "", host = "", max_renames = 32768,
262
protocol = avahi.PROTO_UNSPEC, bus = None):
261
interface = avahi.IF_UNSPEC,
269
protocol = avahi.PROTO_UNSPEC,
263
271
self.interface = interface
265
273
self.type = servicetype
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290
" after %i retries, exiting.",
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self.rename_count)
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raise AvahiServiceError("Too many renames")
285
self.name = str(self.server
286
.GetAlternativeServiceName(self.name))
294
self.server.GetAlternativeServiceName(self.name))
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self.rename_count += 1
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logger.info("Changing Zeroconf service name to %r ...",
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368
def server_state_changed(self, state, error=None):
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369
"""Derived from the Avahi example code"""
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logger.debug("Avahi server state change: %i", state)
364
bad_states = { avahi.SERVER_INVALID:
365
"Zeroconf server invalid",
366
avahi.SERVER_REGISTERING: None,
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avahi.SERVER_COLLISION:
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"Zeroconf server name collision",
369
avahi.SERVER_FAILURE:
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"Zeroconf server failure" }
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avahi.SERVER_INVALID: "Zeroconf server invalid",
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avahi.SERVER_REGISTERING: None,
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avahi.SERVER_COLLISION: "Zeroconf server name collision",
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avahi.SERVER_FAILURE: "Zeroconf server failure",
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if state in bad_states:
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if bad_states[state] is not None:
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if error is None:
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follow_name_owner_changes=True),
393
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avahi.DBUS_INTERFACE_SERVER)
394
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self.server.connect_to_signal("StateChanged",
395
self.server_state_changed)
401
self.server_state_changed)
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self.server_state_changed(self.server.GetState())
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def rename(self, *args, **kwargs):
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"""Add the new name to the syslog messages"""
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ret = AvahiService.rename(self, *args, **kwargs)
403
syslogger.setFormatter(logging.Formatter
404
('Mandos ({}) [%(process)d]:'
405
' %(levelname)s: %(message)s'
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syslogger.setFormatter(logging.Formatter(
410
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
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"fingerprint", "host", "interval",
457
462
"last_approval_request", "last_checked_ok",
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"last_enabled", "name", "timeout")
459
client_defaults = { "timeout": "PT5M",
460
"extended_timeout": "PT15M",
462
"checker": "fping -q -- %%(host)s",
464
"approval_delay": "PT0S",
465
"approval_duration": "PT1S",
466
"approved_by_default": "True",
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"extended_timeout": "PT15M",
468
"checker": "fping -q -- %%(host)s",
470
"approval_delay": "PT0S",
471
"approval_duration": "PT1S",
472
"approved_by_default": "True",
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477
def config_parser(config):
549
555
self.current_checker_command = None
550
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self.approved = None
551
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self.approvals_pending = 0
552
self.changedstate = (multiprocessing_manager
553
.Condition(multiprocessing_manager
555
self.client_structure = [attr for attr in
556
self.__dict__.iterkeys()
558
self.changedstate = multiprocessing_manager.Condition(
559
multiprocessing_manager.Lock())
560
self.client_structure = [attr
561
for attr in self.__dict__.iterkeys()
557
562
if not attr.startswith("_")]
558
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self.client_structure.append("client_structure")
560
for name, t in inspect.getmembers(type(self),
565
for name, t in inspect.getmembers(
566
type(self), lambda obj: isinstance(obj, property)):
564
567
if not name.startswith("_"):
565
568
self.client_structure.append(name)
608
611
# and every interval from then on.
609
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if self.checker_initiator_tag is not None:
610
613
gobject.source_remove(self.checker_initiator_tag)
611
self.checker_initiator_tag = (gobject.timeout_add
613
.total_seconds() * 1000),
614
self.checker_initiator_tag = gobject.timeout_add(
615
int(self.interval.total_seconds() * 1000),
615
617
# Schedule a disable() when 'timeout' has passed
616
618
if self.disable_initiator_tag is not None:
617
619
gobject.source_remove(self.disable_initiator_tag)
618
self.disable_initiator_tag = (gobject.timeout_add
620
.total_seconds() * 1000),
620
self.disable_initiator_tag = gobject.timeout_add(
621
int(self.timeout.total_seconds() * 1000), self.disable)
622
622
# Also start a new checker *right now*.
623
623
self.start_checker()
654
653
gobject.source_remove(self.disable_initiator_tag)
655
654
self.disable_initiator_tag = None
656
655
if getattr(self, "enabled", False):
657
self.disable_initiator_tag = (gobject.timeout_add
658
(int(timeout.total_seconds()
659
* 1000), self.disable))
656
self.disable_initiator_tag = gobject.timeout_add(
657
int(timeout.total_seconds() * 1000), self.disable)
660
658
self.expires = datetime.datetime.utcnow() + timeout
662
660
def need_approval(self):
693
691
# Start a new checker if needed
694
692
if self.checker is None:
695
693
# Escape attributes for the shell
696
escaped_attrs = { attr:
697
re.escape(str(getattr(self, attr)))
698
for attr in self.runtime_expansions }
695
attr: re.escape(str(getattr(self, attr)))
696
for attr in self.runtime_expansions }
700
698
command = self.checker_command % escaped_attrs
701
699
except TypeError as error:
702
700
logger.error('Could not format string "%s"',
703
self.checker_command, exc_info=error)
704
return True # Try again later
701
self.checker_command,
703
return True # Try again later
705
704
self.current_checker_command = command
707
logger.info("Starting checker %r for %s",
706
logger.info("Starting checker %r for %s", command,
709
708
# We don't need to redirect stdout and stderr, since
710
709
# in normal mode, that is already done by daemon(),
711
710
# and in debug mode we don't want to. (Stdin is
720
719
"stderr": wnull })
721
720
self.checker = subprocess.Popen(command,
725
725
except OSError as error:
726
726
logger.error("Failed to start subprocess",
729
self.checker_callback_tag = (gobject.child_watch_add
731
self.checker_callback,
729
self.checker_callback_tag = gobject.child_watch_add(
730
self.checker.pid, self.checker_callback, data=command)
733
731
# The checker may have completed before the gobject
734
732
# watch was added. Check for this.
766
764
self.checker = None
769
def dbus_service_property(dbus_interface, signature="v",
770
access="readwrite", byte_arrays=False):
767
def dbus_service_property(dbus_interface,
771
771
"""Decorators for marking methods of a DBusObjectWithProperties to
772
772
become properties on the D-Bus.
871
878
def _get_all_dbus_things(self, thing):
872
879
"""Returns a generator of (name, attribute) pairs
874
return ((getattr(athing.__get__(self), "_dbus_name",
881
return ((getattr(athing.__get__(self), "_dbus_name", name),
876
882
athing.__get__(self))
877
883
for cls in self.__class__.__mro__
878
884
for name, athing in
879
inspect.getmembers(cls,
880
self._is_dbus_thing(thing)))
885
inspect.getmembers(cls, self._is_dbus_thing(thing)))
882
887
def _get_dbus_property(self, interface_name, property_name):
883
888
"""Returns a bound method if one exists which is a D-Bus
884
889
property with the specified name and interface.
886
for cls in self.__class__.__mro__:
887
for name, value in (inspect.getmembers
889
self._is_dbus_thing("property"))):
891
for cls in self.__class__.__mro__:
892
for name, value in inspect.getmembers(
893
cls, self._is_dbus_thing("property")):
890
894
if (value._dbus_name == property_name
891
895
and value._dbus_interface == interface_name):
892
896
return value.__get__(self)
894
898
# No such property
895
raise DBusPropertyNotFound(self.dbus_object_path + ":"
896
+ interface_name + "."
899
raise DBusPropertyNotFound("{}:{}.{}".format(
900
self.dbus_object_path, interface_name, property_name))
899
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
902
@dbus.service.method(dbus.PROPERTIES_IFACE,
900
904
out_signature="v")
901
905
def Get(self, interface_name, property_name):
902
906
"""Standard D-Bus property Get() method, see D-Bus standard.
948
953
if not hasattr(value, "variant_level"):
949
954
properties[name] = value
951
properties[name] = type(value)(value, variant_level=
952
value.variant_level+1)
956
properties[name] = type(value)(
957
value, variant_level = value.variant_level + 1)
953
958
return dbus.Dictionary(properties, signature="sv")
955
960
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
975
980
document = xml.dom.minidom.parseString(xmlstring)
976
982
def make_tag(document, name, prop):
977
983
e = document.createElement("property")
978
984
e.setAttribute("name", name)
979
985
e.setAttribute("type", prop._dbus_signature)
980
986
e.setAttribute("access", prop._dbus_access)
982
989
for if_tag in document.getElementsByTagName("interface"):
983
990
# Add property tags
984
991
for tag in (make_tag(document, name, prop)
1046
1051
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1048
1053
return dbus.String("", variant_level = variant_level)
1049
return dbus.String(dt.isoformat(),
1050
variant_level=variant_level)
1054
return dbus.String(dt.isoformat(), variant_level=variant_level)
1053
1057
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1083
1088
# Ignore non-D-Bus attributes, and D-Bus attributes
1084
1089
# with the wrong interface name
1085
1090
if (not hasattr(attribute, "_dbus_interface")
1086
or not attribute._dbus_interface
1087
.startswith(orig_interface_name)):
1091
or not attribute._dbus_interface.startswith(
1092
orig_interface_name)):
1089
1094
# Create an alternate D-Bus interface name based on
1090
1095
# the current name
1091
alt_interface = (attribute._dbus_interface
1092
.replace(orig_interface_name,
1093
alt_interface_name))
1096
alt_interface = attribute._dbus_interface.replace(
1097
orig_interface_name, alt_interface_name)
1094
1098
interface_names.add(alt_interface)
1095
1099
# Is this a D-Bus signal?
1096
1100
if getattr(attribute, "_dbus_is_signal", False):
1097
1101
# Extract the original non-method undecorated
1098
1102
# function by black magic
1099
1103
nonmethod_func = (dict(
1100
zip(attribute.func_code.co_freevars,
1101
attribute.__closure__))["func"]
1104
zip(attribute.func_code.co_freevars,
1105
attribute.__closure__))
1106
["func"].cell_contents)
1103
1107
# Create a new, but exactly alike, function
1104
1108
# object, and decorate it to be a new D-Bus signal
1105
1109
# with the alternate D-Bus interface name
1106
new_function = (dbus.service.signal
1108
attribute._dbus_signature)
1110
new_function = (dbus.service.signal(
1111
alt_interface, attribute._dbus_signature)
1109
1112
(types.FunctionType(
1110
nonmethod_func.func_code,
1111
nonmethod_func.func_globals,
1112
nonmethod_func.func_name,
1113
nonmethod_func.func_defaults,
1114
nonmethod_func.func_closure)))
1113
nonmethod_func.func_code,
1114
nonmethod_func.func_globals,
1115
nonmethod_func.func_name,
1116
nonmethod_func.func_defaults,
1117
nonmethod_func.func_closure)))
1115
1118
# Copy annotations, if any
1117
new_function._dbus_annotations = (
1118
dict(attribute._dbus_annotations))
1120
new_function._dbus_annotations = dict(
1121
attribute._dbus_annotations)
1119
1122
except AttributeError:
1121
1124
# Define a creator of a function to call both the
1126
1129
"""This function is a scope container to pass
1127
1130
func1 and func2 to the "call_both" function
1128
1131
outside of its arguments"""
1129
1133
def call_both(*args, **kwargs):
1130
1134
"""This function will emit two D-Bus
1131
1135
signals by calling func1 and func2"""
1132
1136
func1(*args, **kwargs)
1133
1137
func2(*args, **kwargs)
1134
1139
return call_both
1135
1140
# Create the "call_both" function and add it to
1141
1146
# object. Decorate it to be a new D-Bus method
1142
1147
# with the alternate D-Bus interface name. Add it
1143
1148
# to the class.
1144
attr[attrname] = (dbus.service.method
1146
attribute._dbus_in_signature,
1147
attribute._dbus_out_signature)
1149
(attribute.func_code,
1150
attribute.func_globals,
1151
attribute.func_name,
1152
attribute.func_defaults,
1153
attribute.func_closure)))
1150
dbus.service.method(
1152
attribute._dbus_in_signature,
1153
attribute._dbus_out_signature)
1154
(types.FunctionType(attribute.func_code,
1155
attribute.func_globals,
1156
attribute.func_name,
1157
attribute.func_defaults,
1158
attribute.func_closure)))
1154
1159
# Copy annotations, if any
1156
attr[attrname]._dbus_annotations = (
1157
dict(attribute._dbus_annotations))
1161
attr[attrname]._dbus_annotations = dict(
1162
attribute._dbus_annotations)
1158
1163
except AttributeError:
1160
1165
# Is this a D-Bus property?
1163
1168
# object, and decorate it to be a new D-Bus
1164
1169
# property with the alternate D-Bus interface
1165
1170
# name. Add it to the class.
1166
attr[attrname] = (dbus_service_property
1168
attribute._dbus_signature,
1169
attribute._dbus_access,
1171
._dbus_get_args_options
1174
(attribute.func_code,
1175
attribute.func_globals,
1176
attribute.func_name,
1177
attribute.func_defaults,
1178
attribute.func_closure)))
1171
attr[attrname] = (dbus_service_property(
1172
alt_interface, attribute._dbus_signature,
1173
attribute._dbus_access,
1174
attribute._dbus_get_args_options
1176
(types.FunctionType(
1177
attribute.func_code,
1178
attribute.func_globals,
1179
attribute.func_name,
1180
attribute.func_defaults,
1181
attribute.func_closure)))
1179
1182
# Copy annotations, if any
1181
attr[attrname]._dbus_annotations = (
1182
dict(attribute._dbus_annotations))
1184
attr[attrname]._dbus_annotations = dict(
1185
attribute._dbus_annotations)
1183
1186
except AttributeError:
1185
1188
# Is this a D-Bus interface?
1188
1191
# object. Decorate it to be a new D-Bus interface
1189
1192
# with the alternate D-Bus interface name. Add it
1190
1193
# to the class.
1191
attr[attrname] = (dbus_interface_annotations
1194
(attribute.func_code,
1195
attribute.func_globals,
1196
attribute.func_name,
1197
attribute.func_defaults,
1198
attribute.func_closure)))
1195
dbus_interface_annotations(alt_interface)
1196
(types.FunctionType(attribute.func_code,
1197
attribute.func_globals,
1198
attribute.func_name,
1199
attribute.func_defaults,
1200
attribute.func_closure)))
1200
1202
# Deprecate all alternate interfaces
1201
1203
iname="_AlternateDBusNames_interface_annotation{}"
1202
1204
for interface_name in interface_names:
1203
1206
@dbus_interface_annotations(interface_name)
1204
1207
def func(self):
1205
1208
return { "org.freedesktop.DBus.Deprecated":
1207
1210
# Find an unused name
1208
1211
for aname in (iname.format(i)
1209
1212
for i in itertools.count()):
1214
1217
# Replace the class with a new subclass of it with
1215
1218
# methods, signals, etc. as created above.
1216
1219
cls = type(b"{}Alternate".format(cls.__name__),
1222
1226
@alternate_dbus_interfaces({"se.recompile.Mandos":
1223
"se.bsnet.fukt.Mandos"})
1227
"se.bsnet.fukt.Mandos"})
1224
1228
class ClientDBus(Client, DBusObjectWithProperties):
1225
1229
"""A Client class using D-Bus
1244
1248
client_object_name = str(self.name).translate(
1245
1249
{ord("."): ord("_"),
1246
1250
ord("-"): ord("_")})
1247
self.dbus_object_path = (dbus.ObjectPath
1248
("/clients/" + client_object_name))
1251
self.dbus_object_path = dbus.ObjectPath(
1252
"/clients/" + client_object_name)
1249
1253
DBusObjectWithProperties.__init__(self, self.bus,
1250
1254
self.dbus_object_path)
1252
def notifychangeproperty(transform_func,
1253
dbus_name, type_func=lambda x: x,
1254
variant_level=1, invalidate_only=False,
1256
def notifychangeproperty(transform_func, dbus_name,
1257
type_func=lambda x: x,
1259
invalidate_only=False,
1255
1260
_interface=_interface):
1256
1261
""" Modify a variable so that it's a property which announces
1257
1262
its changes to DBus.
1264
1269
variant_level: D-Bus variant level. Default: 1
1266
1271
attrname = "_{}".format(dbus_name)
1267
1273
def setter(self, value):
1268
1274
if hasattr(self, "dbus_object_path"):
1269
1275
if (not hasattr(self, attrname) or
1270
1276
type_func(getattr(self, attrname, None))
1271
1277
!= type_func(value)):
1272
1278
if invalidate_only:
1273
self.PropertiesChanged(_interface,
1279
self.PropertiesChanged(
1280
_interface, dbus.Dictionary(),
1281
dbus.Array((dbus_name, )))
1278
dbus_value = transform_func(type_func(value),
1283
dbus_value = transform_func(
1285
variant_level = variant_level)
1281
1286
self.PropertyChanged(dbus.String(dbus_name),
1283
self.PropertiesChanged(_interface,
1285
dbus.String(dbus_name):
1286
dbus_value }), dbus.Array())
1288
self.PropertiesChanged(
1290
dbus.Dictionary({ dbus.String(dbus_name):
1287
1293
setattr(self, attrname, value)
1289
1295
return property(lambda self: getattr(self, attrname), setter)
1295
1301
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1296
1302
last_enabled = notifychangeproperty(datetime_to_dbus,
1298
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1299
type_func = lambda checker:
1300
checker is not None)
1304
checker = notifychangeproperty(
1305
dbus.Boolean, "CheckerRunning",
1306
type_func = lambda checker: checker is not None)
1301
1307
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1302
1308
"LastCheckedOK")
1303
1309
last_checker_status = notifychangeproperty(dbus.Int16,
1306
1312
datetime_to_dbus, "LastApprovalRequest")
1307
1313
approved_by_default = notifychangeproperty(dbus.Boolean,
1308
1314
"ApprovedByDefault")
1309
approval_delay = notifychangeproperty(dbus.UInt64,
1312
lambda td: td.total_seconds()
1315
approval_delay = notifychangeproperty(
1316
dbus.UInt64, "ApprovalDelay",
1317
type_func = lambda td: td.total_seconds() * 1000)
1314
1318
approval_duration = notifychangeproperty(
1315
1319
dbus.UInt64, "ApprovalDuration",
1316
1320
type_func = lambda td: td.total_seconds() * 1000)
1317
1321
host = notifychangeproperty(dbus.String, "Host")
1318
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1319
type_func = lambda td:
1320
td.total_seconds() * 1000)
1322
timeout = notifychangeproperty(
1323
dbus.UInt64, "Timeout",
1324
type_func = lambda td: td.total_seconds() * 1000)
1321
1325
extended_timeout = notifychangeproperty(
1322
1326
dbus.UInt64, "ExtendedTimeout",
1323
1327
type_func = lambda td: td.total_seconds() * 1000)
1324
interval = notifychangeproperty(dbus.UInt64,
1327
lambda td: td.total_seconds()
1328
interval = notifychangeproperty(
1329
dbus.UInt64, "Interval",
1330
type_func = lambda td: td.total_seconds() * 1000)
1329
1331
checker_command = notifychangeproperty(dbus.String, "Checker")
1330
1332
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1331
1333
invalidate_only=True)
1469
1471
return dbus.Boolean(bool(self.approvals_pending))
1471
1473
# ApprovedByDefault - property
1472
@dbus_service_property(_interface, signature="b",
1474
@dbus_service_property(_interface,
1473
1476
access="readwrite")
1474
1477
def ApprovedByDefault_dbus_property(self, value=None):
1475
1478
if value is None: # get
1477
1480
self.approved_by_default = bool(value)
1479
1482
# ApprovalDelay - property
1480
@dbus_service_property(_interface, signature="t",
1483
@dbus_service_property(_interface,
1481
1485
access="readwrite")
1482
1486
def ApprovalDelay_dbus_property(self, value=None):
1483
1487
if value is None: # get
1486
1490
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1488
1492
# ApprovalDuration - property
1489
@dbus_service_property(_interface, signature="t",
1493
@dbus_service_property(_interface,
1490
1495
access="readwrite")
1491
1496
def ApprovalDuration_dbus_property(self, value=None):
1492
1497
if value is None: # get
1543
1551
return datetime_to_dbus(self.last_checked_ok)
1545
1553
# LastCheckerStatus - property
1546
@dbus_service_property(_interface, signature="n",
1554
@dbus_service_property(_interface, signature="n", access="read")
1548
1555
def LastCheckerStatus_dbus_property(self):
1549
1556
return dbus.Int16(self.last_checker_status)
1580
1588
gobject.source_remove(self.disable_initiator_tag)
1581
self.disable_initiator_tag = (
1582
gobject.timeout_add(
1583
int((self.expires - now).total_seconds()
1584
* 1000), self.disable))
1589
self.disable_initiator_tag = gobject.timeout_add(
1590
int((self.expires - now).total_seconds() * 1000),
1586
1593
# ExtendedTimeout - property
1587
@dbus_service_property(_interface, signature="t",
1594
@dbus_service_property(_interface,
1588
1596
access="readwrite")
1589
1597
def ExtendedTimeout_dbus_property(self, value=None):
1590
1598
if value is None: # get
1593
1601
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1595
1603
# Interval - property
1596
@dbus_service_property(_interface, signature="t",
1604
@dbus_service_property(_interface,
1597
1606
access="readwrite")
1598
1607
def Interval_dbus_property(self, value=None):
1599
1608
if value is None: # get
1604
1613
if self.enabled:
1605
1614
# Reschedule checker run
1606
1615
gobject.source_remove(self.checker_initiator_tag)
1607
self.checker_initiator_tag = (gobject.timeout_add
1608
(value, self.start_checker))
1609
self.start_checker() # Start one now, too
1616
self.checker_initiator_tag = gobject.timeout_add(
1617
value, self.start_checker)
1618
self.start_checker() # Start one now, too
1611
1620
# Checker - property
1612
@dbus_service_property(_interface, signature="s",
1621
@dbus_service_property(_interface,
1613
1623
access="readwrite")
1614
1624
def Checker_dbus_property(self, value=None):
1615
1625
if value is None: # get
1633
1644
return self.dbus_object_path # is already a dbus.ObjectPath
1635
1646
# Secret = property
1636
@dbus_service_property(_interface, signature="ay",
1637
access="write", byte_arrays=True)
1647
@dbus_service_property(_interface,
1638
1651
def Secret_dbus_property(self, value):
1639
1652
self.secret = bytes(value)
1656
1669
if data[0] == 'data':
1658
1671
if data[0] == 'function':
1659
1673
def func(*args, **kwargs):
1660
1674
self._pipe.send(('funcall', name, args, kwargs))
1661
1675
return self._pipe.recv()[1]
1664
1679
def __setattr__(self, name, value):
1680
1695
logger.debug("Pipe FD: %d",
1681
1696
self.server.child_pipe.fileno())
1683
session = (gnutls.connection
1684
.ClientSession(self.request,
1686
.X509Credentials()))
1698
session = gnutls.connection.ClientSession(
1699
self.request, gnutls.connection .X509Credentials())
1688
1701
# Note: gnutls.connection.X509Credentials is really a
1689
1702
# generic GnuTLS certificate credentials object so long as
1698
1711
priority = self.server.gnutls_priority
1699
1712
if priority is None:
1700
1713
priority = "NORMAL"
1701
(gnutls.library.functions
1702
.gnutls_priority_set_direct(session._c_object,
1714
gnutls.library.functions.gnutls_priority_set_direct(
1715
session._c_object, priority, None)
1705
1717
# Start communication using the Mandos protocol
1706
1718
# Get protocol number
1801
1813
logger.warning("gnutls send failed",
1802
1814
exc_info=error)
1804
logger.debug("Sent: %d, remaining: %d",
1805
sent, len(client.secret)
1806
- (sent_size + sent))
1816
logger.debug("Sent: %d, remaining: %d", sent,
1817
len(client.secret) - (sent_size
1807
1819
sent_size += sent
1809
1821
logger.info("Sending secret to %s", client.name)
1826
1838
def peer_certificate(session):
1827
1839
"Return the peer's OpenPGP certificate as a bytestring"
1828
1840
# If not an OpenPGP certificate...
1829
if (gnutls.library.functions
1830
.gnutls_certificate_type_get(session._c_object)
1841
if (gnutls.library.functions.gnutls_certificate_type_get(
1831
1843
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1832
1844
# ...do the normal thing
1833
1845
return session.peer_certificate
1847
1859
def fingerprint(openpgp):
1848
1860
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1849
1861
# New GnuTLS "datum" with the OpenPGP public key
1850
datum = (gnutls.library.types
1851
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1854
ctypes.c_uint(len(openpgp))))
1862
datum = gnutls.library.types.gnutls_datum_t(
1863
ctypes.cast(ctypes.c_char_p(openpgp),
1864
ctypes.POINTER(ctypes.c_ubyte)),
1865
ctypes.c_uint(len(openpgp)))
1855
1866
# New empty GnuTLS certificate
1856
1867
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1857
(gnutls.library.functions
1858
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
1868
gnutls.library.functions.gnutls_openpgp_crt_init(
1859
1870
# Import the OpenPGP public key into the certificate
1860
(gnutls.library.functions
1861
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1862
gnutls.library.constants
1863
.GNUTLS_OPENPGP_FMT_RAW))
1871
gnutls.library.functions.gnutls_openpgp_crt_import(
1872
crt, ctypes.byref(datum),
1873
gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)
1864
1874
# Verify the self signature in the key
1865
1875
crtverify = ctypes.c_uint()
1866
(gnutls.library.functions
1867
.gnutls_openpgp_crt_verify_self(crt, 0,
1868
ctypes.byref(crtverify)))
1876
gnutls.library.functions.gnutls_openpgp_crt_verify_self(
1877
crt, 0, ctypes.byref(crtverify))
1869
1878
if crtverify.value != 0:
1870
1879
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1871
raise (gnutls.errors.CertificateSecurityError
1880
raise gnutls.errors.CertificateSecurityError(
1873
1882
# New buffer for the fingerprint
1874
1883
buf = ctypes.create_string_buffer(20)
1875
1884
buf_len = ctypes.c_size_t()
1876
1885
# Get the fingerprint from the certificate into the buffer
1877
(gnutls.library.functions
1878
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1879
ctypes.byref(buf_len)))
1886
gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint(
1887
crt, ctypes.byref(buf), ctypes.byref(buf_len))
1880
1888
# Deinit the certificate
1881
1889
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1882
1890
# Convert the buffer to a Python bytestring
1931
1941
interface: None or a network interface name (string)
1932
1942
use_ipv6: Boolean; to use IPv6 or not
1934
1945
def __init__(self, server_address, RequestHandlerClass,
1935
interface=None, use_ipv6=True, socketfd=None):
1936
1949
"""If socketfd is set, use that file descriptor instead of
1937
1950
creating a new one with socket.socket().
1979
1992
self.interface)
1982
self.socket.setsockopt(socket.SOL_SOCKET,
1984
(self.interface + "\0")
1995
self.socket.setsockopt(
1996
socket.SOL_SOCKET, SO_BINDTODEVICE,
1997
(self.interface + "\0").encode("utf-8"))
1986
1998
except socket.error as error:
1987
1999
if error.errno == errno.EPERM:
1988
2000
logger.error("No permission to bind to"
2006
2018
self.server_address = (any_address,
2007
2019
self.server_address[1])
2008
2020
elif not self.server_address[1]:
2009
self.server_address = (self.server_address[0],
2021
self.server_address = (self.server_address[0], 0)
2011
2022
# if self.interface:
2012
2023
# self.server_address = (self.server_address[0],
2028
2039
Assumes a gobject.MainLoop event loop.
2030
2042
def __init__(self, server_address, RequestHandlerClass,
2031
interface=None, use_ipv6=True, clients=None,
2032
gnutls_priority=None, use_dbus=True, socketfd=None):
2046
gnutls_priority=None,
2033
2049
self.enabled = False
2034
2050
self.clients = clients
2035
2051
if self.clients is None:
2051
2068
def add_pipe(self, parent_pipe, proc):
2052
2069
# Call "handle_ipc" for both data and EOF events
2053
gobject.io_add_watch(parent_pipe.fileno(),
2054
gobject.IO_IN | gobject.IO_HUP,
2055
functools.partial(self.handle_ipc,
2070
gobject.io_add_watch(
2071
parent_pipe.fileno(),
2072
gobject.IO_IN | gobject.IO_HUP,
2073
functools.partial(self.handle_ipc,
2074
parent_pipe = parent_pipe,
2060
def handle_ipc(self, source, condition, parent_pipe=None,
2061
proc = None, client_object=None):
2077
def handle_ipc(self, source, condition,
2080
client_object=None):
2062
2081
# error, or the other end of multiprocessing.Pipe has closed
2063
2082
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2064
2083
# Wait for other process to exit
2087
2106
parent_pipe.send(False)
2090
gobject.io_add_watch(parent_pipe.fileno(),
2091
gobject.IO_IN | gobject.IO_HUP,
2092
functools.partial(self.handle_ipc,
2109
gobject.io_add_watch(
2110
parent_pipe.fileno(),
2111
gobject.IO_IN | gobject.IO_HUP,
2112
functools.partial(self.handle_ipc,
2113
parent_pipe = parent_pipe,
2115
client_object = client))
2098
2116
parent_pipe.send(True)
2099
2117
# remove the old hook in favor of the new above hook on
2107
2125
parent_pipe.send(('data', getattr(client_object,
2108
2126
funcname)(*args,
2111
2129
if command == 'getattr':
2112
2130
attrname = request[1]
2113
2131
if callable(client_object.__getattribute__(attrname)):
2114
parent_pipe.send(('function',))
2132
parent_pipe.send(('function', ))
2116
parent_pipe.send(('data', client_object
2117
.__getattribute__(attrname)))
2135
'data', client_object.__getattribute__(attrname)))
2119
2137
if command == 'setattr':
2120
2138
attrname = request[1]
2161
2179
"followers")) # Tokens valid after
2181
Token = collections.namedtuple("Token", (
2182
"regexp", # To match token; if "value" is not None, must have
2183
# a "group" containing digits
2184
"value", # datetime.timedelta or None
2185
"followers")) # Tokens valid after this token
2163
2186
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2164
2187
# the "duration" ABNF definition in RFC 3339, Appendix A.
2165
2188
token_end = Token(re.compile(r"$"), None, frozenset())
2166
2189
token_second = Token(re.compile(r"(\d+)S"),
2167
2190
datetime.timedelta(seconds=1),
2168
frozenset((token_end,)))
2191
frozenset((token_end, )))
2169
2192
token_minute = Token(re.compile(r"(\d+)M"),
2170
2193
datetime.timedelta(minutes=1),
2171
2194
frozenset((token_second, token_end)))
2187
2210
frozenset((token_month, token_end)))
2188
2211
token_week = Token(re.compile(r"(\d+)W"),
2189
2212
datetime.timedelta(weeks=1),
2190
frozenset((token_end,)))
2213
frozenset((token_end, )))
2191
2214
token_duration = Token(re.compile(r"P"), None,
2192
2215
frozenset((token_year, token_month,
2193
2216
token_day, token_time,
2284
2306
# Close all standard open file descriptors
2285
2307
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2286
2308
if not stat.S_ISCHR(os.fstat(null).st_mode):
2287
raise OSError(errno.ENODEV, "{} not a character device"
2309
raise OSError(errno.ENODEV,
2310
"{} not a character device"
2288
2311
.format(os.devnull))
2289
2312
os.dup2(null, sys.stdin.fileno())
2290
2313
os.dup2(null, sys.stdout.fileno())
2367
2390
"statedir": "/var/lib/mandos",
2368
2391
"foreground": "False",
2369
2392
"zeroconf": "True",
2372
2395
# Parse config file for server-global settings
2373
2396
server_config = configparser.SafeConfigParser(server_defaults)
2374
2397
del server_defaults
2375
server_config.read(os.path.join(options.configdir,
2398
server_config.read(os.path.join(options.configdir, "mandos.conf"))
2377
2399
# Convert the SafeConfigParser object to a dict
2378
2400
server_settings = server_config.defaults()
2379
2401
# Use the appropriate methods on the non-string config options
2397
2419
# Override the settings from the config file with command line
2398
2420
# options, if set.
2399
2421
for option in ("interface", "address", "port", "debug",
2400
"priority", "servicename", "configdir",
2401
"use_dbus", "use_ipv6", "debuglevel", "restore",
2402
"statedir", "socket", "foreground", "zeroconf"):
2422
"priority", "servicename", "configdir", "use_dbus",
2423
"use_ipv6", "debuglevel", "restore", "statedir",
2424
"socket", "foreground", "zeroconf"):
2403
2425
value = getattr(options, option)
2404
2426
if value is not None:
2405
2427
server_settings[option] = value
2421
2443
##################################################################
2423
if (not server_settings["zeroconf"] and
2424
not (server_settings["port"]
2425
or server_settings["socket"] != "")):
2426
parser.error("Needs port or socket to work without"
2445
if (not server_settings["zeroconf"]
2446
and not (server_settings["port"]
2447
or server_settings["socket"] != "")):
2448
parser.error("Needs port or socket to work without Zeroconf")
2429
2450
# For convenience
2430
2451
debug = server_settings["debug"]
2446
2467
initlogger(debug, level)
2448
2469
if server_settings["servicename"] != "Mandos":
2449
syslogger.setFormatter(logging.Formatter
2450
('Mandos ({}) [%(process)d]:'
2451
' %(levelname)s: %(message)s'
2452
.format(server_settings
2470
syslogger.setFormatter(
2471
logging.Formatter('Mandos ({}) [%(process)d]:'
2472
' %(levelname)s: %(message)s'.format(
2473
server_settings["servicename"])))
2455
2475
# Parse config file with clients
2456
2476
client_config = configparser.SafeConfigParser(Client
2464
2484
socketfd = None
2465
2485
if server_settings["socket"] != "":
2466
2486
socketfd = server_settings["socket"]
2467
tcp_server = MandosServer((server_settings["address"],
2468
server_settings["port"]),
2470
interface=(server_settings["interface"]
2474
server_settings["priority"],
2487
tcp_server = MandosServer(
2488
(server_settings["address"], server_settings["port"]),
2490
interface=(server_settings["interface"] or None),
2492
gnutls_priority=server_settings["priority"],
2477
2495
if not foreground:
2478
2496
pidfilename = "/run/mandos.pid"
2479
2497
if not os.path.isdir("/run/."):
2513
2531
def debug_gnutls(level, string):
2514
2532
logger.debug("GnuTLS: %s", string[:-1])
2516
(gnutls.library.functions
2517
.gnutls_global_set_log_function(debug_gnutls))
2534
gnutls.library.functions.gnutls_global_set_log_function(
2519
2537
# Redirect stdin so all checkers get /dev/null
2520
2538
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2542
2560
bus_name = dbus.service.BusName("se.recompile.Mandos",
2543
bus, do_not_queue=True)
2544
old_bus_name = (dbus.service.BusName
2545
("se.bsnet.fukt.Mandos", bus,
2563
old_bus_name = dbus.service.BusName(
2564
"se.bsnet.fukt.Mandos", bus,
2547
2566
except dbus.exceptions.NameExistsException as e:
2548
2567
logger.error("Disabling D-Bus:", exc_info=e)
2549
2568
use_dbus = False
2551
2570
tcp_server.use_dbus = False
2553
2572
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2554
service = AvahiServiceToSyslog(name =
2555
server_settings["servicename"],
2556
servicetype = "_mandos._tcp",
2557
protocol = protocol, bus = bus)
2573
service = AvahiServiceToSyslog(
2574
name = server_settings["servicename"],
2575
servicetype = "_mandos._tcp",
2576
protocol = protocol,
2558
2578
if server_settings["interface"]:
2559
service.interface = (if_nametoindex
2560
(server_settings["interface"]
2579
service.interface = if_nametoindex(
2580
server_settings["interface"].encode("utf-8"))
2563
2582
global multiprocessing_manager
2564
2583
multiprocessing_manager = multiprocessing.Manager()
2583
2602
if server_settings["restore"]:
2585
2604
with open(stored_state_path, "rb") as stored_state:
2586
clients_data, old_client_settings = (pickle.load
2605
clients_data, old_client_settings = pickle.load(
2588
2607
os.remove(stored_state_path)
2589
2608
except IOError as e:
2590
2609
if e.errno == errno.ENOENT:
2591
logger.warning("Could not load persistent state: {}"
2592
.format(os.strerror(e.errno)))
2610
logger.warning("Could not load persistent state:"
2611
" {}".format(os.strerror(e.errno)))
2594
2613
logger.critical("Could not load persistent state:",
2597
2616
except EOFError as e:
2598
2617
logger.warning("Could not load persistent state: "
2599
"EOFError:", exc_info=e)
2601
2621
with PGPEngine() as pgp:
2602
2622
for client_name, client in clients_data.items():
2631
2651
if not client["last_checked_ok"]:
2632
2652
logger.warning(
2633
2653
"disabling client {} - Client never "
2634
"performed a successful checker"
2635
.format(client_name))
2654
"performed a successful checker".format(
2636
2656
client["enabled"] = False
2637
2657
elif client["last_checker_status"] != 0:
2638
2658
logger.warning(
2639
2659
"disabling client {} - Client last"
2640
" checker failed with error code {}"
2641
.format(client_name,
2642
client["last_checker_status"]))
2660
" checker failed with error code"
2663
client["last_checker_status"]))
2643
2664
client["enabled"] = False
2645
client["expires"] = (datetime.datetime
2647
+ client["timeout"])
2666
client["expires"] = (
2667
datetime.datetime.utcnow()
2668
+ client["timeout"])
2648
2669
logger.debug("Last checker succeeded,"
2649
" keeping {} enabled"
2650
.format(client_name))
2670
" keeping {} enabled".format(
2652
client["secret"] = (
2653
pgp.decrypt(client["encrypted_secret"],
2654
client_settings[client_name]
2673
client["secret"] = pgp.decrypt(
2674
client["encrypted_secret"],
2675
client_settings[client_name]["secret"])
2656
2676
except PGPError:
2657
2677
# If decryption fails, we use secret from new settings
2658
logger.debug("Failed to decrypt {} old secret"
2659
.format(client_name))
2660
client["secret"] = (
2661
client_settings[client_name]["secret"])
2678
logger.debug("Failed to decrypt {} old secret".format(
2680
client["secret"] = (client_settings[client_name]
2663
2683
# Add/remove clients based on new changes made to config
2664
2684
for client_name in (set(old_client_settings)
2671
2691
# Create all client objects
2672
2692
for client_name, client in clients_data.items():
2673
2693
tcp_server.clients[client_name] = client_class(
2674
name = client_name, settings = client,
2675
2696
server_settings = server_settings)
2677
2698
if not tcp_server.clients:
2693
2714
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2696
@alternate_dbus_interfaces({"se.recompile.Mandos":
2697
"se.bsnet.fukt.Mandos"})
2718
@alternate_dbus_interfaces(
2719
{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
2698
2720
class MandosDBusService(DBusObjectWithProperties):
2699
2721
"""A D-Bus proxy object"""
2700
2723
def __init__(self):
2701
2724
dbus.service.Object.__init__(self, bus, "/")
2702
2726
_interface = "se.recompile.Mandos"
2704
2728
@dbus_interface_annotations(_interface)
2705
2729
def _foo(self):
2706
return { "org.freedesktop.DBus.Property"
2707
".EmitsChangedSignal":
2731
"org.freedesktop.DBus.Property.EmitsChangedSignal":
2710
2734
@dbus.service.signal(_interface, signature="o")
2711
2735
def ClientAdded(self, objpath):
2782
2805
exclude = { "bus", "changedstate", "secret",
2783
2806
"checker", "server_settings" }
2784
for name, typ in (inspect.getmembers
2785
(dbus.service.Object)):
2807
for name, typ in inspect.getmembers(dbus.service
2786
2809
exclude.add(name)
2788
2811
client_dict["encrypted_secret"] = (client
2795
2818
del client_settings[client.name]["secret"]
2798
with (tempfile.NamedTemporaryFile
2799
(mode='wb', suffix=".pickle", prefix='clients-',
2800
dir=os.path.dirname(stored_state_path),
2801
delete=False)) as stored_state:
2821
with tempfile.NamedTemporaryFile(
2825
dir=os.path.dirname(stored_state_path),
2826
delete=False) as stored_state:
2802
2827
pickle.dump((clients, client_settings), stored_state)
2803
tempname=stored_state.name
2828
tempname = stored_state.name
2804
2829
os.rename(tempname, stored_state_path)
2805
2830
except (IOError, OSError) as e: