124
148
self.rename_count = 0
125
149
self.max_renames = max_renames
150
self.protocol = protocol
151
self.group = None # our entry group
126
154
def rename(self):
127
155
"""Derived from the Avahi example code"""
128
156
if self.rename_count >= self.max_renames:
129
logger.critical(u"No suitable Zeroconf service name found"
130
u" after %i retries, exiting.",
157
logger.critical("No suitable Zeroconf service name found"
158
" after %i retries, exiting.",
131
159
self.rename_count)
132
raise AvahiServiceError(u"Too many renames")
133
self.name = server.GetAlternativeServiceName(self.name)
134
logger.info(u"Changing Zeroconf service name to %r ...",
160
raise AvahiServiceError("Too many renames")
161
self.name = unicode(self.server.GetAlternativeServiceName(self.name))
162
logger.info("Changing Zeroconf service name to %r ...",
136
164
syslogger.setFormatter(logging.Formatter
137
('Mandos (%s): %%(levelname)s:'
138
' %%(message)s' % self.name))
165
('Mandos (%s) [%%(process)d]:'
166
' %%(levelname)s: %%(message)s'
171
except dbus.exceptions.DBusException, error:
172
logger.critical("DBusException: %s", error)
141
175
self.rename_count += 1
142
176
def remove(self):
143
177
"""Derived from the Avahi example code"""
144
if group is not None:
178
if self.group is not None:
147
181
"""Derived from the Avahi example code"""
150
group = dbus.Interface(bus.get_object
152
server.EntryGroupNew()),
153
avahi.DBUS_INTERFACE_ENTRY_GROUP)
154
group.connect_to_signal('StateChanged',
155
entry_group_state_changed)
156
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
157
service.name, service.type)
159
self.interface, # interface
160
avahi.PROTO_INET6, # protocol
161
dbus.UInt32(0), # flags
162
self.name, self.type,
163
self.domain, self.host,
164
dbus.UInt16(self.port),
165
avahi.string_array_to_txt_array(self.TXT))
168
# From the Avahi example code:
169
group = None # our entry group
170
# End of Avahi example code
173
def _datetime_to_dbus(dt, variant_level=0):
174
"""Convert a UTC datetime.datetime() to a D-Bus type."""
175
return dbus.String(dt.isoformat(), variant_level=variant_level)
178
class Client(dbus.service.Object):
182
if self.group is None:
183
self.group = dbus.Interface(
184
self.bus.get_object(avahi.DBUS_NAME,
185
self.server.EntryGroupNew()),
186
avahi.DBUS_INTERFACE_ENTRY_GROUP)
187
self.group.connect_to_signal('StateChanged',
189
.entry_group_state_changed)
190
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
191
self.name, self.type)
192
self.group.AddService(
195
dbus.UInt32(0), # flags
196
self.name, self.type,
197
self.domain, self.host,
198
dbus.UInt16(self.port),
199
avahi.string_array_to_txt_array(self.TXT))
201
def entry_group_state_changed(self, state, error):
202
"""Derived from the Avahi example code"""
203
logger.debug("Avahi entry group state change: %i", state)
205
if state == avahi.ENTRY_GROUP_ESTABLISHED:
206
logger.debug("Zeroconf service established.")
207
elif state == avahi.ENTRY_GROUP_COLLISION:
208
logger.info("Zeroconf service name collision.")
210
elif state == avahi.ENTRY_GROUP_FAILURE:
211
logger.critical("Avahi: Error in group state changed %s",
213
raise AvahiGroupError("State changed: %s"
216
"""Derived from the Avahi example code"""
217
if self.group is not None:
220
def server_state_changed(self, state):
221
"""Derived from the Avahi example code"""
222
logger.debug("Avahi server state change: %i", state)
223
if state == avahi.SERVER_COLLISION:
224
logger.error("Zeroconf server name collision")
226
elif state == avahi.SERVER_RUNNING:
229
"""Derived from the Avahi example code"""
230
if self.server is None:
231
self.server = dbus.Interface(
232
self.bus.get_object(avahi.DBUS_NAME,
233
avahi.DBUS_PATH_SERVER),
234
avahi.DBUS_INTERFACE_SERVER)
235
self.server.connect_to_signal("StateChanged",
236
self.server_state_changed)
237
self.server_state_changed(self.server.GetState())
240
class Client(object):
179
241
"""A representation of a client host served by this server.
181
name: string; from the config file, used in log messages
244
_approved: bool(); 'None' if not yet approved/disapproved
245
approval_delay: datetime.timedelta(); Time to wait for approval
246
approval_duration: datetime.timedelta(); Duration of one approval
247
checker: subprocess.Popen(); a running checker process used
248
to see if the client lives.
249
'None' if no process is running.
250
checker_callback_tag: a gobject event source tag, or None
251
checker_command: string; External command which is run to check
252
if client lives. %() expansions are done at
253
runtime with vars(self) as dict, so that for
254
instance %(name)s can be used in the command.
255
checker_initiator_tag: a gobject event source tag, or None
256
created: datetime.datetime(); (UTC) object creation
257
current_checker_command: string; current running checker_command
258
disable_hook: If set, called by disable() as disable_hook(self)
259
disable_initiator_tag: a gobject event source tag, or None
182
261
fingerprint: string (40 or 32 hexadecimal digits); used to
183
262
uniquely identify the client
184
secret: bytestring; sent verbatim (over TLS) to client
185
263
host: string; available for use by the checker command
186
created: datetime.datetime(); (UTC) object creation
264
interval: datetime.timedelta(); How often to start a new checker
265
last_approval_request: datetime.datetime(); (UTC) or None
266
last_checked_ok: datetime.datetime(); (UTC) or None
187
267
last_enabled: datetime.datetime(); (UTC)
189
last_checked_ok: datetime.datetime(); (UTC) or None
268
name: string; from the config file, used in log messages and
270
secret: bytestring; sent verbatim (over TLS) to client
190
271
timeout: datetime.timedelta(); How long from last_checked_ok
191
until this client is invalid
192
interval: datetime.timedelta(); How often to start a new checker
193
disable_hook: If set, called by disable() as disable_hook(self)
194
checker: subprocess.Popen(); a running checker process used
195
to see if the client lives.
196
'None' if no process is running.
197
checker_initiator_tag: a gobject event source tag, or None
198
disable_initiator_tag: - '' -
199
checker_callback_tag: - '' -
200
checker_command: string; External command which is run to check if
201
client lives. %() expansions are done at
202
runtime with vars(self) as dict, so that for
203
instance %(name)s can be used in the command.
204
use_dbus: bool(); Whether to provide D-Bus interface and signals
205
dbus_object_path: dbus.ObjectPath ; only set if self.use_dbus
272
until this client is disabled
273
runtime_expansions: Allowed attributes for runtime expansion.
276
runtime_expansions = ("approval_delay", "approval_duration",
277
"created", "enabled", "fingerprint",
278
"host", "interval", "last_checked_ok",
279
"last_enabled", "name", "timeout")
282
def _timedelta_to_milliseconds(td):
283
"Convert a datetime.timedelta() to milliseconds"
284
return ((td.days * 24 * 60 * 60 * 1000)
285
+ (td.seconds * 1000)
286
+ (td.microseconds // 1000))
207
288
def timeout_milliseconds(self):
208
289
"Return the 'timeout' attribute in milliseconds"
209
return ((self.timeout.days * 24 * 60 * 60 * 1000)
210
+ (self.timeout.seconds * 1000)
211
+ (self.timeout.microseconds // 1000))
290
return self._timedelta_to_milliseconds(self.timeout)
213
292
def interval_milliseconds(self):
214
293
"Return the 'interval' attribute in milliseconds"
215
return ((self.interval.days * 24 * 60 * 60 * 1000)
216
+ (self.interval.seconds * 1000)
217
+ (self.interval.microseconds // 1000))
294
return self._timedelta_to_milliseconds(self.interval)
296
def approval_delay_milliseconds(self):
297
return self._timedelta_to_milliseconds(self.approval_delay)
219
def __init__(self, name = None, disable_hook=None, config=None,
299
def __init__(self, name = None, disable_hook=None, config=None):
221
300
"""Note: the 'checker' key in 'config' sets the
222
301
'checker_command' attribute and *not* the 'checker'
225
304
if config is None:
227
logger.debug(u"Creating client %r", self.name)
228
self.use_dbus = use_dbus
230
self.dbus_object_path = (dbus.ObjectPath
232
+ self.name.replace(".", "_")))
233
dbus.service.Object.__init__(self, bus,
234
self.dbus_object_path)
306
logger.debug("Creating client %r", self.name)
235
307
# Uppercase and remove spaces from fingerprint for later
236
308
# comparison purposes with return value from the fingerprint()
238
310
self.fingerprint = (config["fingerprint"].upper()
240
logger.debug(u" Fingerprint: %s", self.fingerprint)
312
logger.debug(" Fingerprint: %s", self.fingerprint)
241
313
if "secret" in config:
242
self.secret = config["secret"].decode(u"base64")
314
self.secret = config["secret"].decode("base64")
243
315
elif "secfile" in config:
244
with closing(open(os.path.expanduser
246
(config["secfile"])))) as secfile:
316
with open(os.path.expanduser(os.path.expandvars
317
(config["secfile"])),
247
319
self.secret = secfile.read()
249
raise TypeError(u"No secret or secfile for client %s"
321
raise TypeError("No secret or secfile for client %s"
251
323
self.host = config.get("host", "")
252
324
self.created = datetime.datetime.utcnow()
253
325
self.enabled = False
326
self.last_approval_request = None
254
327
self.last_enabled = None
255
328
self.last_checked_ok = None
256
329
self.timeout = string_to_delta(config["timeout"])
423
510
self.checker_callback_tag = None
424
511
if getattr(self, "checker", None) is None:
426
logger.debug(u"Stopping checker for %(name)s", vars(self))
513
logger.debug("Stopping checker for %(name)s", vars(self))
428
515
os.kill(self.checker.pid, signal.SIGTERM)
430
517
#if self.checker.poll() is None:
431
518
# os.kill(self.checker.pid, signal.SIGKILL)
432
519
except OSError, error:
433
520
if error.errno != errno.ESRCH: # No such process
435
522
self.checker = None
437
self.PropertyChanged(dbus.String(u"checker_running"),
438
dbus.Boolean(False, variant_level=1))
440
def still_valid(self):
441
"""Has the timeout not yet passed for this client?"""
442
if not getattr(self, "enabled", False):
444
now = datetime.datetime.utcnow()
445
if self.last_checked_ok is None:
446
return now < (self.created + self.timeout)
448
return now < (self.last_checked_ok + self.timeout)
450
## D-Bus methods & signals
451
_interface = u"org.mandos_system.Mandos.Client"
453
# BumpTimeout - method
454
BumpTimeout = dbus.service.method(_interface)(bump_timeout)
455
BumpTimeout.__name__ = "BumpTimeout"
524
def dbus_service_property(dbus_interface, signature="v",
525
access="readwrite", byte_arrays=False):
526
"""Decorators for marking methods of a DBusObjectWithProperties to
527
become properties on the D-Bus.
529
The decorated method will be called with no arguments by "Get"
530
and with one argument by "Set".
532
The parameters, where they are supported, are the same as
533
dbus.service.method, except there is only "signature", since the
534
type from Get() and the type sent to Set() is the same.
536
# Encoding deeply encoded byte arrays is not supported yet by the
537
# "Set" method, so we fail early here:
538
if byte_arrays and signature != "ay":
539
raise ValueError("Byte arrays not supported for non-'ay'"
540
" signature %r" % signature)
542
func._dbus_is_property = True
543
func._dbus_interface = dbus_interface
544
func._dbus_signature = signature
545
func._dbus_access = access
546
func._dbus_name = func.__name__
547
if func._dbus_name.endswith("_dbus_property"):
548
func._dbus_name = func._dbus_name[:-14]
549
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
554
class DBusPropertyException(dbus.exceptions.DBusException):
555
"""A base class for D-Bus property-related exceptions
557
def __unicode__(self):
558
return unicode(str(self))
561
class DBusPropertyAccessException(DBusPropertyException):
562
"""A property's access permissions disallows an operation.
567
class DBusPropertyNotFound(DBusPropertyException):
568
"""An attempt was made to access a non-existing property.
573
class DBusObjectWithProperties(dbus.service.Object):
574
"""A D-Bus object with properties.
576
Classes inheriting from this can use the dbus_service_property
577
decorator to expose methods as D-Bus properties. It exposes the
578
standard Get(), Set(), and GetAll() methods on the D-Bus.
582
def _is_dbus_property(obj):
583
return getattr(obj, "_dbus_is_property", False)
585
def _get_all_dbus_properties(self):
586
"""Returns a generator of (name, attribute) pairs
588
return ((prop._dbus_name, prop)
590
inspect.getmembers(self, self._is_dbus_property))
592
def _get_dbus_property(self, interface_name, property_name):
593
"""Returns a bound method if one exists which is a D-Bus
594
property with the specified name and interface.
596
for name in (property_name,
597
property_name + "_dbus_property"):
598
prop = getattr(self, name, None)
600
or not self._is_dbus_property(prop)
601
or prop._dbus_name != property_name
602
or (interface_name and prop._dbus_interface
603
and interface_name != prop._dbus_interface)):
607
raise DBusPropertyNotFound(self.dbus_object_path + ":"
608
+ interface_name + "."
611
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
613
def Get(self, interface_name, property_name):
614
"""Standard D-Bus property Get() method, see D-Bus standard.
616
prop = self._get_dbus_property(interface_name, property_name)
617
if prop._dbus_access == "write":
618
raise DBusPropertyAccessException(property_name)
620
if not hasattr(value, "variant_level"):
622
return type(value)(value, variant_level=value.variant_level+1)
624
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
625
def Set(self, interface_name, property_name, value):
626
"""Standard D-Bus property Set() method, see D-Bus standard.
628
prop = self._get_dbus_property(interface_name, property_name)
629
if prop._dbus_access == "read":
630
raise DBusPropertyAccessException(property_name)
631
if prop._dbus_get_args_options["byte_arrays"]:
632
# The byte_arrays option is not supported yet on
633
# signatures other than "ay".
634
if prop._dbus_signature != "ay":
636
value = dbus.ByteArray(''.join(unichr(byte)
640
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
641
out_signature="a{sv}")
642
def GetAll(self, interface_name):
643
"""Standard D-Bus property GetAll() method, see D-Bus
646
Note: Will not include properties with access="write".
649
for name, prop in self._get_all_dbus_properties():
651
and interface_name != prop._dbus_interface):
652
# Interface non-empty but did not match
654
# Ignore write-only properties
655
if prop._dbus_access == "write":
658
if not hasattr(value, "variant_level"):
661
all[name] = type(value)(value, variant_level=
662
value.variant_level+1)
663
return dbus.Dictionary(all, signature="sv")
665
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
667
path_keyword='object_path',
668
connection_keyword='connection')
669
def Introspect(self, object_path, connection):
670
"""Standard D-Bus method, overloaded to insert property tags.
672
xmlstring = dbus.service.Object.Introspect(self, object_path,
675
document = xml.dom.minidom.parseString(xmlstring)
676
def make_tag(document, name, prop):
677
e = document.createElement("property")
678
e.setAttribute("name", name)
679
e.setAttribute("type", prop._dbus_signature)
680
e.setAttribute("access", prop._dbus_access)
682
for if_tag in document.getElementsByTagName("interface"):
683
for tag in (make_tag(document, name, prop)
685
in self._get_all_dbus_properties()
686
if prop._dbus_interface
687
== if_tag.getAttribute("name")):
688
if_tag.appendChild(tag)
689
# Add the names to the return values for the
690
# "org.freedesktop.DBus.Properties" methods
691
if (if_tag.getAttribute("name")
692
== "org.freedesktop.DBus.Properties"):
693
for cn in if_tag.getElementsByTagName("method"):
694
if cn.getAttribute("name") == "Get":
695
for arg in cn.getElementsByTagName("arg"):
696
if (arg.getAttribute("direction")
698
arg.setAttribute("name", "value")
699
elif cn.getAttribute("name") == "GetAll":
700
for arg in cn.getElementsByTagName("arg"):
701
if (arg.getAttribute("direction")
703
arg.setAttribute("name", "props")
704
xmlstring = document.toxml("utf-8")
706
except (AttributeError, xml.dom.DOMException,
707
xml.parsers.expat.ExpatError), error:
708
logger.error("Failed to override Introspection method",
713
class ClientDBus(Client, DBusObjectWithProperties):
714
"""A Client class using D-Bus
717
dbus_object_path: dbus.ObjectPath
718
bus: dbus.SystemBus()
721
runtime_expansions = (Client.runtime_expansions
722
+ ("dbus_object_path",))
724
# dbus.service.Object doesn't use super(), so we can't either.
726
def __init__(self, bus = None, *args, **kwargs):
727
self._approvals_pending = 0
729
Client.__init__(self, *args, **kwargs)
730
# Only now, when this client is initialized, can it show up on
732
client_object_name = unicode(self.name).translate(
735
self.dbus_object_path = (dbus.ObjectPath
736
("/clients/" + client_object_name))
737
DBusObjectWithProperties.__init__(self, self.bus,
738
self.dbus_object_path)
740
def _get_approvals_pending(self):
741
return self._approvals_pending
742
def _set_approvals_pending(self, value):
743
old_value = self._approvals_pending
744
self._approvals_pending = value
746
if (hasattr(self, "dbus_object_path")
747
and bval is not bool(old_value)):
748
dbus_bool = dbus.Boolean(bval, variant_level=1)
749
self.PropertyChanged(dbus.String("ApprovalPending"),
752
approvals_pending = property(_get_approvals_pending,
753
_set_approvals_pending)
754
del _get_approvals_pending, _set_approvals_pending
757
def _datetime_to_dbus(dt, variant_level=0):
758
"""Convert a UTC datetime.datetime() to a D-Bus type."""
759
return dbus.String(dt.isoformat(),
760
variant_level=variant_level)
763
oldstate = getattr(self, "enabled", False)
764
r = Client.enable(self)
765
if oldstate != self.enabled:
767
self.PropertyChanged(dbus.String("Enabled"),
768
dbus.Boolean(True, variant_level=1))
769
self.PropertyChanged(
770
dbus.String("LastEnabled"),
771
self._datetime_to_dbus(self.last_enabled,
775
def disable(self, quiet = False):
776
oldstate = getattr(self, "enabled", False)
777
r = Client.disable(self, quiet=quiet)
778
if not quiet and oldstate != self.enabled:
780
self.PropertyChanged(dbus.String("Enabled"),
781
dbus.Boolean(False, variant_level=1))
784
def __del__(self, *args, **kwargs):
786
self.remove_from_connection()
789
if hasattr(DBusObjectWithProperties, "__del__"):
790
DBusObjectWithProperties.__del__(self, *args, **kwargs)
791
Client.__del__(self, *args, **kwargs)
793
def checker_callback(self, pid, condition, command,
795
self.checker_callback_tag = None
798
self.PropertyChanged(dbus.String("CheckerRunning"),
799
dbus.Boolean(False, variant_level=1))
800
if os.WIFEXITED(condition):
801
exitstatus = os.WEXITSTATUS(condition)
803
self.CheckerCompleted(dbus.Int16(exitstatus),
804
dbus.Int64(condition),
805
dbus.String(command))
808
self.CheckerCompleted(dbus.Int16(-1),
809
dbus.Int64(condition),
810
dbus.String(command))
812
return Client.checker_callback(self, pid, condition, command,
815
def checked_ok(self, *args, **kwargs):
816
r = Client.checked_ok(self, *args, **kwargs)
818
self.PropertyChanged(
819
dbus.String("LastCheckedOK"),
820
(self._datetime_to_dbus(self.last_checked_ok,
824
def need_approval(self, *args, **kwargs):
825
r = Client.need_approval(self, *args, **kwargs)
827
self.PropertyChanged(
828
dbus.String("LastApprovalRequest"),
829
(self._datetime_to_dbus(self.last_approval_request,
833
def start_checker(self, *args, **kwargs):
834
old_checker = self.checker
835
if self.checker is not None:
836
old_checker_pid = self.checker.pid
838
old_checker_pid = None
839
r = Client.start_checker(self, *args, **kwargs)
840
# Only if new checker process was started
841
if (self.checker is not None
842
and old_checker_pid != self.checker.pid):
844
self.CheckerStarted(self.current_checker_command)
845
self.PropertyChanged(
846
dbus.String("CheckerRunning"),
847
dbus.Boolean(True, variant_level=1))
850
def stop_checker(self, *args, **kwargs):
851
old_checker = getattr(self, "checker", None)
852
r = Client.stop_checker(self, *args, **kwargs)
853
if (old_checker is not None
854
and getattr(self, "checker", None) is None):
855
self.PropertyChanged(dbus.String("CheckerRunning"),
856
dbus.Boolean(False, variant_level=1))
859
def _reset_approved(self):
860
self._approved = None
863
def approve(self, value=True):
864
self.send_changedstate()
865
self._approved = value
866
gobject.timeout_add(self._timedelta_to_milliseconds
867
(self.approval_duration),
868
self._reset_approved)
871
## D-Bus methods, signals & properties
872
_interface = "se.bsnet.fukt.Mandos.Client"
457
876
# CheckerCompleted - signal
458
@dbus.service.signal(_interface, signature="bqs")
459
def CheckerCompleted(self, success, condition, command):
877
@dbus.service.signal(_interface, signature="nxs")
878
def CheckerCompleted(self, exitcode, waitstatus, command):
579
945
# StopChecker - method
580
StopChecker = dbus.service.method(_interface)(stop_checker)
581
StopChecker.__name__ = "StopChecker"
946
@dbus.service.method(_interface)
947
def StopChecker(self):
952
# ApprovalPending - property
953
@dbus_service_property(_interface, signature="b", access="read")
954
def ApprovalPending_dbus_property(self):
955
return dbus.Boolean(bool(self.approvals_pending))
957
# ApprovedByDefault - property
958
@dbus_service_property(_interface, signature="b",
960
def ApprovedByDefault_dbus_property(self, value=None):
961
if value is None: # get
962
return dbus.Boolean(self.approved_by_default)
963
self.approved_by_default = bool(value)
965
self.PropertyChanged(dbus.String("ApprovedByDefault"),
966
dbus.Boolean(value, variant_level=1))
968
# ApprovalDelay - property
969
@dbus_service_property(_interface, signature="t",
971
def ApprovalDelay_dbus_property(self, value=None):
972
if value is None: # get
973
return dbus.UInt64(self.approval_delay_milliseconds())
974
self.approval_delay = datetime.timedelta(0, 0, 0, value)
976
self.PropertyChanged(dbus.String("ApprovalDelay"),
977
dbus.UInt64(value, variant_level=1))
979
# ApprovalDuration - property
980
@dbus_service_property(_interface, signature="t",
982
def ApprovalDuration_dbus_property(self, value=None):
983
if value is None: # get
984
return dbus.UInt64(self._timedelta_to_milliseconds(
985
self.approval_duration))
986
self.approval_duration = datetime.timedelta(0, 0, 0, value)
988
self.PropertyChanged(dbus.String("ApprovalDuration"),
989
dbus.UInt64(value, variant_level=1))
992
@dbus_service_property(_interface, signature="s", access="read")
993
def Name_dbus_property(self):
994
return dbus.String(self.name)
996
# Fingerprint - property
997
@dbus_service_property(_interface, signature="s", access="read")
998
def Fingerprint_dbus_property(self):
999
return dbus.String(self.fingerprint)
1002
@dbus_service_property(_interface, signature="s",
1004
def Host_dbus_property(self, value=None):
1005
if value is None: # get
1006
return dbus.String(self.host)
1009
self.PropertyChanged(dbus.String("Host"),
1010
dbus.String(value, variant_level=1))
1012
# Created - property
1013
@dbus_service_property(_interface, signature="s", access="read")
1014
def Created_dbus_property(self):
1015
return dbus.String(self._datetime_to_dbus(self.created))
1017
# LastEnabled - property
1018
@dbus_service_property(_interface, signature="s", access="read")
1019
def LastEnabled_dbus_property(self):
1020
if self.last_enabled is None:
1021
return dbus.String("")
1022
return dbus.String(self._datetime_to_dbus(self.last_enabled))
1024
# Enabled - property
1025
@dbus_service_property(_interface, signature="b",
1027
def Enabled_dbus_property(self, value=None):
1028
if value is None: # get
1029
return dbus.Boolean(self.enabled)
1035
# LastCheckedOK - property
1036
@dbus_service_property(_interface, signature="s",
1038
def LastCheckedOK_dbus_property(self, value=None):
1039
if value is not None:
1042
if self.last_checked_ok is None:
1043
return dbus.String("")
1044
return dbus.String(self._datetime_to_dbus(self
1047
# LastApprovalRequest - property
1048
@dbus_service_property(_interface, signature="s", access="read")
1049
def LastApprovalRequest_dbus_property(self):
1050
if self.last_approval_request is None:
1051
return dbus.String("")
1052
return dbus.String(self.
1053
_datetime_to_dbus(self
1054
.last_approval_request))
1056
# Timeout - property
1057
@dbus_service_property(_interface, signature="t",
1059
def Timeout_dbus_property(self, value=None):
1060
if value is None: # get
1061
return dbus.UInt64(self.timeout_milliseconds())
1062
self.timeout = datetime.timedelta(0, 0, 0, value)
1064
self.PropertyChanged(dbus.String("Timeout"),
1065
dbus.UInt64(value, variant_level=1))
1066
if getattr(self, "disable_initiator_tag", None) is None:
1068
# Reschedule timeout
1069
gobject.source_remove(self.disable_initiator_tag)
1070
self.disable_initiator_tag = None
1071
time_to_die = (self.
1072
_timedelta_to_milliseconds((self
1077
if time_to_die <= 0:
1078
# The timeout has passed
1081
self.disable_initiator_tag = (gobject.timeout_add
1082
(time_to_die, self.disable))
1084
# Interval - property
1085
@dbus_service_property(_interface, signature="t",
1087
def Interval_dbus_property(self, value=None):
1088
if value is None: # get
1089
return dbus.UInt64(self.interval_milliseconds())
1090
self.interval = datetime.timedelta(0, 0, 0, value)
1092
self.PropertyChanged(dbus.String("Interval"),
1093
dbus.UInt64(value, variant_level=1))
1094
if getattr(self, "checker_initiator_tag", None) is None:
1096
# Reschedule checker run
1097
gobject.source_remove(self.checker_initiator_tag)
1098
self.checker_initiator_tag = (gobject.timeout_add
1099
(value, self.start_checker))
1100
self.start_checker() # Start one now, too
1102
# Checker - property
1103
@dbus_service_property(_interface, signature="s",
1105
def Checker_dbus_property(self, value=None):
1106
if value is None: # get
1107
return dbus.String(self.checker_command)
1108
self.checker_command = value
1110
self.PropertyChanged(dbus.String("Checker"),
1111
dbus.String(self.checker_command,
1114
# CheckerRunning - property
1115
@dbus_service_property(_interface, signature="b",
1117
def CheckerRunning_dbus_property(self, value=None):
1118
if value is None: # get
1119
return dbus.Boolean(self.checker is not None)
1121
self.start_checker()
1125
# ObjectPath - property
1126
@dbus_service_property(_interface, signature="o", access="read")
1127
def ObjectPath_dbus_property(self):
1128
return self.dbus_object_path # is already a dbus.ObjectPath
1131
@dbus_service_property(_interface, signature="ay",
1132
access="write", byte_arrays=True)
1133
def Secret_dbus_property(self, value):
1134
self.secret = str(value)
586
def peer_certificate(session):
587
"Return the peer's OpenPGP certificate as a bytestring"
588
# If not an OpenPGP certificate...
589
if (gnutls.library.functions
590
.gnutls_certificate_type_get(session._c_object)
591
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
592
# ...do the normal thing
593
return session.peer_certificate
594
list_size = ctypes.c_uint()
595
cert_list = (gnutls.library.functions
596
.gnutls_certificate_get_peers
597
(session._c_object, ctypes.byref(list_size)))
598
if list_size.value == 0:
601
return ctypes.string_at(cert.data, cert.size)
604
def fingerprint(openpgp):
605
"Convert an OpenPGP bytestring to a hexdigit fingerprint string"
606
# New GnuTLS "datum" with the OpenPGP public key
607
datum = (gnutls.library.types
608
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
611
ctypes.c_uint(len(openpgp))))
612
# New empty GnuTLS certificate
613
crt = gnutls.library.types.gnutls_openpgp_crt_t()
614
(gnutls.library.functions
615
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
616
# Import the OpenPGP public key into the certificate
617
(gnutls.library.functions
618
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
619
gnutls.library.constants
620
.GNUTLS_OPENPGP_FMT_RAW))
621
# Verify the self signature in the key
622
crtverify = ctypes.c_uint()
623
(gnutls.library.functions
624
.gnutls_openpgp_crt_verify_self(crt, 0, ctypes.byref(crtverify)))
625
if crtverify.value != 0:
626
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
627
raise gnutls.errors.CertificateSecurityError("Verify failed")
628
# New buffer for the fingerprint
629
buf = ctypes.create_string_buffer(20)
630
buf_len = ctypes.c_size_t()
631
# Get the fingerprint from the certificate into the buffer
632
(gnutls.library.functions
633
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
634
ctypes.byref(buf_len)))
635
# Deinit the certificate
636
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
637
# Convert the buffer to a Python bytestring
638
fpr = ctypes.string_at(buf, buf_len.value)
639
# Convert the bytestring to hexadecimal notation
640
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
644
class TCP_handler(SocketServer.BaseRequestHandler, object):
645
"""A TCP request handler class.
646
Instantiated by IPv6_TCPServer for each request to handle it.
1139
class ProxyClient(object):
1140
def __init__(self, child_pipe, fpr, address):
1141
self._pipe = child_pipe
1142
self._pipe.send(('init', fpr, address))
1143
if not self._pipe.recv():
1146
def __getattribute__(self, name):
1147
if(name == '_pipe'):
1148
return super(ProxyClient, self).__getattribute__(name)
1149
self._pipe.send(('getattr', name))
1150
data = self._pipe.recv()
1151
if data[0] == 'data':
1153
if data[0] == 'function':
1154
def func(*args, **kwargs):
1155
self._pipe.send(('funcall', name, args, kwargs))
1156
return self._pipe.recv()[1]
1159
def __setattr__(self, name, value):
1160
if(name == '_pipe'):
1161
return super(ProxyClient, self).__setattr__(name, value)
1162
self._pipe.send(('setattr', name, value))
1165
class ClientHandler(socketserver.BaseRequestHandler, object):
1166
"""A class to handle client connections.
1168
Instantiated once for each connection to handle it.
647
1169
Note: This will run in its own forked process."""
649
1171
def handle(self):
650
logger.info(u"TCP connection from: %s",
651
unicode(self.client_address))
652
session = (gnutls.connection
653
.ClientSession(self.request,
657
line = self.request.makefile().readline()
658
logger.debug(u"Protocol version: %r", line)
660
if int(line.strip().split()[0]) > 1:
662
except (ValueError, IndexError, RuntimeError), error:
663
logger.error(u"Unknown protocol version: %s", error)
666
# Note: gnutls.connection.X509Credentials is really a generic
667
# GnuTLS certificate credentials object so long as no X.509
668
# keys are added to it. Therefore, we can use it here despite
669
# using OpenPGP certificates.
671
#priority = ':'.join(("NONE", "+VERS-TLS1.1", "+AES-256-CBC",
672
# "+SHA1", "+COMP-NULL", "+CTYPE-OPENPGP",
674
# Use a fallback default, since this MUST be set.
675
priority = self.server.settings.get("priority", "NORMAL")
676
(gnutls.library.functions
677
.gnutls_priority_set_direct(session._c_object,
682
except gnutls.errors.GNUTLSError, error:
683
logger.warning(u"Handshake failed: %s", error)
684
# Do not run session.bye() here: the session is not
685
# established. Just abandon the request.
688
fpr = fingerprint(peer_certificate(session))
689
except (TypeError, gnutls.errors.GNUTLSError), error:
690
logger.warning(u"Bad certificate: %s", error)
693
logger.debug(u"Fingerprint: %s", fpr)
694
for c in self.server.clients:
695
if c.fingerprint == fpr:
699
logger.warning(u"Client not found for fingerprint: %s",
703
# Have to check if client.still_valid(), since it is possible
704
# that the client timed out while establishing the GnuTLS
706
if not client.still_valid():
707
logger.warning(u"Client %(name)s is invalid",
711
## This won't work here, since we're in a fork.
712
# client.bump_timeout()
714
while sent_size < len(client.secret):
715
sent = session.send(client.secret[sent_size:])
716
logger.debug(u"Sent: %d, remaining: %d",
717
sent, len(client.secret)
718
- (sent_size + sent))
723
class IPv6_TCPServer(SocketServer.ForkingMixIn,
724
SocketServer.TCPServer, object):
725
"""IPv6 TCP server. Accepts 'None' as address and/or port.
1172
with contextlib.closing(self.server.child_pipe) as child_pipe:
1173
logger.info("TCP connection from: %s",
1174
unicode(self.client_address))
1175
logger.debug("Pipe FD: %d",
1176
self.server.child_pipe.fileno())
1178
session = (gnutls.connection
1179
.ClientSession(self.request,
1181
.X509Credentials()))
1183
# Note: gnutls.connection.X509Credentials is really a
1184
# generic GnuTLS certificate credentials object so long as
1185
# no X.509 keys are added to it. Therefore, we can use it
1186
# here despite using OpenPGP certificates.
1188
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1189
# "+AES-256-CBC", "+SHA1",
1190
# "+COMP-NULL", "+CTYPE-OPENPGP",
1192
# Use a fallback default, since this MUST be set.
1193
priority = self.server.gnutls_priority
1194
if priority is None:
1196
(gnutls.library.functions
1197
.gnutls_priority_set_direct(session._c_object,
1200
# Start communication using the Mandos protocol
1201
# Get protocol number
1202
line = self.request.makefile().readline()
1203
logger.debug("Protocol version: %r", line)
1205
if int(line.strip().split()[0]) > 1:
1207
except (ValueError, IndexError, RuntimeError), error:
1208
logger.error("Unknown protocol version: %s", error)
1211
# Start GnuTLS connection
1214
except gnutls.errors.GNUTLSError, error:
1215
logger.warning("Handshake failed: %s", error)
1216
# Do not run session.bye() here: the session is not
1217
# established. Just abandon the request.
1219
logger.debug("Handshake succeeded")
1221
approval_required = False
1224
fpr = self.fingerprint(self.peer_certificate
1226
except (TypeError, gnutls.errors.GNUTLSError), error:
1227
logger.warning("Bad certificate: %s", error)
1229
logger.debug("Fingerprint: %s", fpr)
1232
client = ProxyClient(child_pipe, fpr,
1233
self.client_address)
1237
if client.approval_delay:
1238
delay = client.approval_delay
1239
client.approvals_pending += 1
1240
approval_required = True
1243
if not client.enabled:
1244
logger.warning("Client %s is disabled",
1246
if self.server.use_dbus:
1248
client.Rejected("Disabled")
1251
if client._approved or not client.approval_delay:
1252
#We are approved or approval is disabled
1254
elif client._approved is None:
1255
logger.info("Client %s needs approval",
1257
if self.server.use_dbus:
1259
client.NeedApproval(
1260
client.approval_delay_milliseconds(),
1261
client.approved_by_default)
1263
logger.warning("Client %s was not approved",
1265
if self.server.use_dbus:
1267
client.Rejected("Denied")
1270
#wait until timeout or approved
1271
#x = float(client._timedelta_to_milliseconds(delay))
1272
time = datetime.datetime.now()
1273
client.changedstate.acquire()
1274
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
1275
client.changedstate.release()
1276
time2 = datetime.datetime.now()
1277
if (time2 - time) >= delay:
1278
if not client.approved_by_default:
1279
logger.warning("Client %s timed out while"
1280
" waiting for approval",
1282
if self.server.use_dbus:
1284
client.Rejected("Approval timed out")
1289
delay -= time2 - time
1292
while sent_size < len(client.secret):
1294
sent = session.send(client.secret[sent_size:])
1295
except (gnutls.errors.GNUTLSError), error:
1296
logger.warning("gnutls send failed")
1298
logger.debug("Sent: %d, remaining: %d",
1299
sent, len(client.secret)
1300
- (sent_size + sent))
1303
logger.info("Sending secret to %s", client.name)
1304
# bump the timeout as if seen
1306
if self.server.use_dbus:
1311
if approval_required:
1312
client.approvals_pending -= 1
1315
except (gnutls.errors.GNUTLSError), error:
1316
logger.warning("GnuTLS bye failed")
1319
def peer_certificate(session):
1320
"Return the peer's OpenPGP certificate as a bytestring"
1321
# If not an OpenPGP certificate...
1322
if (gnutls.library.functions
1323
.gnutls_certificate_type_get(session._c_object)
1324
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1325
# ...do the normal thing
1326
return session.peer_certificate
1327
list_size = ctypes.c_uint(1)
1328
cert_list = (gnutls.library.functions
1329
.gnutls_certificate_get_peers
1330
(session._c_object, ctypes.byref(list_size)))
1331
if not bool(cert_list) and list_size.value != 0:
1332
raise gnutls.errors.GNUTLSError("error getting peer"
1334
if list_size.value == 0:
1337
return ctypes.string_at(cert.data, cert.size)
1340
def fingerprint(openpgp):
1341
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1342
# New GnuTLS "datum" with the OpenPGP public key
1343
datum = (gnutls.library.types
1344
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1347
ctypes.c_uint(len(openpgp))))
1348
# New empty GnuTLS certificate
1349
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1350
(gnutls.library.functions
1351
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
1352
# Import the OpenPGP public key into the certificate
1353
(gnutls.library.functions
1354
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1355
gnutls.library.constants
1356
.GNUTLS_OPENPGP_FMT_RAW))
1357
# Verify the self signature in the key
1358
crtverify = ctypes.c_uint()
1359
(gnutls.library.functions
1360
.gnutls_openpgp_crt_verify_self(crt, 0,
1361
ctypes.byref(crtverify)))
1362
if crtverify.value != 0:
1363
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1364
raise (gnutls.errors.CertificateSecurityError
1366
# New buffer for the fingerprint
1367
buf = ctypes.create_string_buffer(20)
1368
buf_len = ctypes.c_size_t()
1369
# Get the fingerprint from the certificate into the buffer
1370
(gnutls.library.functions
1371
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1372
ctypes.byref(buf_len)))
1373
# Deinit the certificate
1374
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1375
# Convert the buffer to a Python bytestring
1376
fpr = ctypes.string_at(buf, buf_len.value)
1377
# Convert the bytestring to hexadecimal notation
1378
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
1382
class MultiprocessingMixIn(object):
1383
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
1384
def sub_process_main(self, request, address):
1386
self.finish_request(request, address)
1388
self.handle_error(request, address)
1389
self.close_request(request)
1391
def process_request(self, request, address):
1392
"""Start a new process to process the request."""
1393
multiprocessing.Process(target = self.sub_process_main,
1394
args = (request, address)).start()
1396
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1397
""" adds a pipe to the MixIn """
1398
def process_request(self, request, client_address):
1399
"""Overrides and wraps the original process_request().
1401
This function creates a new pipe in self.pipe
1403
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1405
super(MultiprocessingMixInWithPipe,
1406
self).process_request(request, client_address)
1407
self.child_pipe.close()
1408
self.add_pipe(parent_pipe)
1410
def add_pipe(self, parent_pipe):
1411
"""Dummy function; override as necessary"""
1412
raise NotImplementedError
1414
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1415
socketserver.TCPServer, object):
1416
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
727
settings: Server settings
728
clients: Set() of Client objects
729
1419
enabled: Boolean; whether this server is activated yet
1420
interface: None or a network interface name (string)
1421
use_ipv6: Boolean; to use IPv6 or not
731
address_family = socket.AF_INET6
732
def __init__(self, *args, **kwargs):
733
if "settings" in kwargs:
734
self.settings = kwargs["settings"]
735
del kwargs["settings"]
736
if "clients" in kwargs:
737
self.clients = kwargs["clients"]
738
del kwargs["clients"]
740
super(IPv6_TCPServer, self).__init__(*args, **kwargs)
1423
def __init__(self, server_address, RequestHandlerClass,
1424
interface=None, use_ipv6=True):
1425
self.interface = interface
1427
self.address_family = socket.AF_INET6
1428
socketserver.TCPServer.__init__(self, server_address,
1429
RequestHandlerClass)
741
1430
def server_bind(self):
742
1431
"""This overrides the normal server_bind() function
743
1432
to bind to an interface if one was specified, and also NOT to
744
1433
bind to an address or port if they were not specified."""
745
if self.settings["interface"]:
746
# 25 is from /usr/include/asm-i486/socket.h
747
SO_BINDTODEVICE = getattr(socket, "SO_BINDTODEVICE", 25)
749
self.socket.setsockopt(socket.SOL_SOCKET,
751
self.settings["interface"])
752
except socket.error, error:
753
if error[0] == errno.EPERM:
754
logger.error(u"No permission to"
755
u" bind to interface %s",
756
self.settings["interface"])
1434
if self.interface is not None:
1435
if SO_BINDTODEVICE is None:
1436
logger.error("SO_BINDTODEVICE does not exist;"
1437
" cannot bind to interface %s",
1441
self.socket.setsockopt(socket.SOL_SOCKET,
1445
except socket.error, error:
1446
if error[0] == errno.EPERM:
1447
logger.error("No permission to"
1448
" bind to interface %s",
1450
elif error[0] == errno.ENOPROTOOPT:
1451
logger.error("SO_BINDTODEVICE not available;"
1452
" cannot bind to interface %s",
759
1456
# Only bind(2) the socket if we really need to.
760
1457
if self.server_address[0] or self.server_address[1]:
761
1458
if not self.server_address[0]:
763
self.server_address = (in6addr_any,
1459
if self.address_family == socket.AF_INET6:
1460
any_address = "::" # in6addr_any
1462
any_address = socket.INADDR_ANY
1463
self.server_address = (any_address,
764
1464
self.server_address[1])
765
1465
elif not self.server_address[1]:
766
1466
self.server_address = (self.server_address[0],
768
# if self.settings["interface"]:
1468
# if self.interface:
769
1469
# self.server_address = (self.server_address[0],
772
1472
# if_nametoindex
775
return super(IPv6_TCPServer, self).server_bind()
1474
return socketserver.TCPServer.server_bind(self)
1477
class MandosServer(IPv6_TCPServer):
1481
clients: set of Client objects
1482
gnutls_priority GnuTLS priority string
1483
use_dbus: Boolean; to emit D-Bus signals or not
1485
Assumes a gobject.MainLoop event loop.
1487
def __init__(self, server_address, RequestHandlerClass,
1488
interface=None, use_ipv6=True, clients=None,
1489
gnutls_priority=None, use_dbus=True):
1490
self.enabled = False
1491
self.clients = clients
1492
if self.clients is None:
1493
self.clients = set()
1494
self.use_dbus = use_dbus
1495
self.gnutls_priority = gnutls_priority
1496
IPv6_TCPServer.__init__(self, server_address,
1497
RequestHandlerClass,
1498
interface = interface,
1499
use_ipv6 = use_ipv6)
776
1500
def server_activate(self):
777
1501
if self.enabled:
778
return super(IPv6_TCPServer, self).server_activate()
1502
return socketserver.TCPServer.server_activate(self)
779
1503
def enable(self):
780
1504
self.enabled = True
1505
def add_pipe(self, parent_pipe):
1506
# Call "handle_ipc" for both data and EOF events
1507
gobject.io_add_watch(parent_pipe.fileno(),
1508
gobject.IO_IN | gobject.IO_HUP,
1509
functools.partial(self.handle_ipc,
1510
parent_pipe = parent_pipe))
1512
def handle_ipc(self, source, condition, parent_pipe=None,
1513
client_object=None):
1515
gobject.IO_IN: "IN", # There is data to read.
1516
gobject.IO_OUT: "OUT", # Data can be written (without
1518
gobject.IO_PRI: "PRI", # There is urgent data to read.
1519
gobject.IO_ERR: "ERR", # Error condition.
1520
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1521
# broken, usually for pipes and
1524
conditions_string = ' | '.join(name
1526
condition_names.iteritems()
1527
if cond & condition)
1528
# error or the other end of multiprocessing.Pipe has closed
1529
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
1532
# Read a request from the child
1533
request = parent_pipe.recv()
1534
command = request[0]
1536
if command == 'init':
1538
address = request[2]
1540
for c in self.clients:
1541
if c.fingerprint == fpr:
1545
logger.warning("Client not found for fingerprint: %s, ad"
1546
"dress: %s", fpr, address)
1549
mandos_dbus_service.ClientNotFound(fpr, address[0])
1550
parent_pipe.send(False)
1553
gobject.io_add_watch(parent_pipe.fileno(),
1554
gobject.IO_IN | gobject.IO_HUP,
1555
functools.partial(self.handle_ipc,
1556
parent_pipe = parent_pipe,
1557
client_object = client))
1558
parent_pipe.send(True)
1559
# remove the old hook in favor of the new above hook on same fileno
1561
if command == 'funcall':
1562
funcname = request[1]
1566
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
1568
if command == 'getattr':
1569
attrname = request[1]
1570
if callable(client_object.__getattribute__(attrname)):
1571
parent_pipe.send(('function',))
1573
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
1575
if command == 'setattr':
1576
attrname = request[1]
1578
setattr(client_object, attrname, value)
783
1583
def string_to_delta(interval):
784
1584
"""Parse a string and return a datetime.timedelta
786
1586
>>> string_to_delta('7d')
787
1587
datetime.timedelta(7)
788
1588
>>> string_to_delta('60s')
928
1719
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
929
1720
"servicename": "Mandos",
930
1721
"use_dbus": "True",
933
1726
# Parse config file for server-global settings
934
server_config = ConfigParser.SafeConfigParser(server_defaults)
1727
server_config = configparser.SafeConfigParser(server_defaults)
935
1728
del server_defaults
936
server_config.read(os.path.join(options.configdir, "mandos.conf"))
1729
server_config.read(os.path.join(options.configdir,
937
1731
# Convert the SafeConfigParser object to a dict
938
1732
server_settings = server_config.defaults()
939
# Use getboolean on the boolean config options
940
server_settings["debug"] = (server_config.getboolean
941
("DEFAULT", "debug"))
942
server_settings["use_dbus"] = (server_config.getboolean
943
("DEFAULT", "use_dbus"))
1733
# Use the appropriate methods on the non-string config options
1734
for option in ("debug", "use_dbus", "use_ipv6"):
1735
server_settings[option] = server_config.getboolean("DEFAULT",
1737
if server_settings["port"]:
1738
server_settings["port"] = server_config.getint("DEFAULT",
944
1740
del server_config
946
1742
# Override the settings from the config file with command line
947
1743
# options, if set.
948
1744
for option in ("interface", "address", "port", "debug",
949
1745
"priority", "servicename", "configdir",
1746
"use_dbus", "use_ipv6", "debuglevel"):
951
1747
value = getattr(options, option)
952
1748
if value is not None:
953
1749
server_settings[option] = value
1751
# Force all strings to be unicode
1752
for option in server_settings.keys():
1753
if type(server_settings[option]) is str:
1754
server_settings[option] = unicode(server_settings[option])
955
1755
# Now we have our good server settings in "server_settings"
1757
##################################################################
957
1759
# For convenience
958
1760
debug = server_settings["debug"]
1761
debuglevel = server_settings["debuglevel"]
959
1762
use_dbus = server_settings["use_dbus"]
963
syslogger.setLevel(logging.WARNING)
964
console.setLevel(logging.WARNING)
1763
use_ipv6 = server_settings["use_ipv6"]
966
1765
if server_settings["servicename"] != "Mandos":
967
1766
syslogger.setFormatter(logging.Formatter
968
('Mandos (%s): %%(levelname)s:'
1767
('Mandos (%s) [%%(process)d]:'
1768
' %%(levelname)s: %%(message)s'
970
1769
% server_settings["servicename"]))
972
1771
# Parse config file with clients
973
1772
client_defaults = { "timeout": "1h",
974
1773
"interval": "5m",
975
"checker": "fping -q -- %(host)s",
1774
"checker": "fping -q -- %%(host)s",
1776
"approval_delay": "0s",
1777
"approval_duration": "1s",
978
client_config = ConfigParser.SafeConfigParser(client_defaults)
1779
client_config = configparser.SafeConfigParser(client_defaults)
979
1780
client_config.read(os.path.join(server_settings["configdir"],
980
1781
"clients.conf"))
983
tcp_server = IPv6_TCPServer((server_settings["address"],
984
server_settings["port"]),
986
settings=server_settings,
988
pidfilename = "/var/run/mandos.pid"
990
pidfile = open(pidfilename, "w")
991
except IOError, error:
992
logger.error("Could not open file %r", pidfilename)
1783
global mandos_dbus_service
1784
mandos_dbus_service = None
1786
tcp_server = MandosServer((server_settings["address"],
1787
server_settings["port"]),
1789
interface=(server_settings["interface"]
1793
server_settings["priority"],
1796
pidfilename = "/var/run/mandos.pid"
1798
pidfile = open(pidfilename, "w")
1800
logger.error("Could not open file %r", pidfilename)
995
1803
uid = pwd.getpwnam("_mandos").pw_uid
1804
gid = pwd.getpwnam("_mandos").pw_gid
996
1805
except KeyError:
998
1807
uid = pwd.getpwnam("mandos").pw_uid
1808
gid = pwd.getpwnam("mandos").pw_gid
999
1809
except KeyError:
1001
1811
uid = pwd.getpwnam("nobody").pw_uid
1812
gid = pwd.getpwnam("nobody").pw_gid
1002
1813
except KeyError:
1005
gid = pwd.getpwnam("_mandos").pw_gid
1008
gid = pwd.getpwnam("mandos").pw_gid
1011
gid = pwd.getpwnam("nogroup").pw_gid
1017
1819
except OSError, error:
1018
1820
if error[0] != errno.EPERM:
1022
service = AvahiService(name = server_settings["servicename"],
1023
servicetype = "_mandos._tcp", )
1024
if server_settings["interface"]:
1025
service.interface = (if_nametoindex
1026
(server_settings["interface"]))
1031
# From the Avahi example code
1032
DBusGMainLoop(set_as_default=True )
1033
main_loop = gobject.MainLoop()
1034
bus = dbus.SystemBus()
1035
server = dbus.Interface(bus.get_object(avahi.DBUS_NAME,
1036
avahi.DBUS_PATH_SERVER),
1037
avahi.DBUS_INTERFACE_SERVER)
1038
# End of Avahi example code
1040
bus_name = dbus.service.BusName(u"org.mandos-system.Mandos",
1043
clients.update(Set(Client(name = section,
1045
= dict(client_config.items(section)),
1046
use_dbus = use_dbus)
1047
for section in client_config.sections()))
1049
logger.warning(u"No clients defined")
1823
if not debug and not debuglevel:
1824
syslogger.setLevel(logging.WARNING)
1825
console.setLevel(logging.WARNING)
1827
level = getattr(logging, debuglevel.upper())
1828
syslogger.setLevel(level)
1829
console.setLevel(level)
1832
# Enable all possible GnuTLS debugging
1834
# "Use a log level over 10 to enable all debugging options."
1836
gnutls.library.functions.gnutls_global_set_log_level(11)
1838
@gnutls.library.types.gnutls_log_func
1839
def debug_gnutls(level, string):
1840
logger.debug("GnuTLS: %s", string[:-1])
1842
(gnutls.library.functions
1843
.gnutls_global_set_log_function(debug_gnutls))
1052
1845
# Redirect stdin so all checkers get /dev/null
1053
1846
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1054
1847
os.dup2(null, sys.stdin.fileno())
1058
1851
# No console logging
1059
1852
logger.removeHandler(console)
1854
# Need to fork before connecting to D-Bus
1060
1856
# Close all input and output, do double fork, etc.
1065
pidfile.write(str(pid) + "\n")
1069
logger.error(u"Could not write to file %r with PID %d",
1072
# "pidfile" was never created
1077
"Cleanup function; run on exit"
1079
# From the Avahi example code
1080
if not group is None:
1083
# End of Avahi example code
1860
# From the Avahi example code
1861
DBusGMainLoop(set_as_default=True )
1862
main_loop = gobject.MainLoop()
1863
bus = dbus.SystemBus()
1864
# End of Avahi example code
1867
bus_name = dbus.service.BusName("se.bsnet.fukt.Mandos",
1868
bus, do_not_queue=True)
1869
except dbus.exceptions.NameExistsException, e:
1870
logger.error(unicode(e) + ", disabling D-Bus")
1872
server_settings["use_dbus"] = False
1873
tcp_server.use_dbus = False
1874
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1875
service = AvahiService(name = server_settings["servicename"],
1876
servicetype = "_mandos._tcp",
1877
protocol = protocol, bus = bus)
1878
if server_settings["interface"]:
1879
service.interface = (if_nametoindex
1880
(str(server_settings["interface"])))
1882
global multiprocessing_manager
1883
multiprocessing_manager = multiprocessing.Manager()
1885
client_class = Client
1887
client_class = functools.partial(ClientDBus, bus = bus)
1888
def client_config_items(config, section):
1889
special_settings = {
1890
"approved_by_default":
1891
lambda: config.getboolean(section,
1892
"approved_by_default"),
1894
for name, value in config.items(section):
1896
yield (name, special_settings[name]())
1900
tcp_server.clients.update(set(
1901
client_class(name = section,
1902
config= dict(client_config_items(
1903
client_config, section)))
1904
for section in client_config.sections()))
1905
if not tcp_server.clients:
1906
logger.warning("No clients defined")
1086
client = clients.pop()
1087
client.disable_hook = None
1090
atexit.register(cleanup)
1912
pidfile.write(str(pid) + "\n".encode("utf-8"))
1915
logger.error("Could not write to file %r with PID %d",
1918
# "pidfile" was never created
1093
1922
signal.signal(signal.SIGINT, signal.SIG_IGN)
1094
1924
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1095
1925
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1098
class MandosServer(dbus.service.Object):
1928
class MandosDBusService(dbus.service.Object):
1099
1929
"""A D-Bus proxy object"""
1100
1930
def __init__(self):
1101
dbus.service.Object.__init__(self, bus,
1103
_interface = u"org.mandos_system.Mandos"
1105
@dbus.service.signal(_interface, signature="oa{sv}")
1106
def ClientAdded(self, objpath, properties):
1931
dbus.service.Object.__init__(self, bus, "/")
1932
_interface = "se.bsnet.fukt.Mandos"
1110
1934
@dbus.service.signal(_interface, signature="o")
1111
def ClientRemoved(self, objpath):
1935
def ClientAdded(self, objpath):
1939
@dbus.service.signal(_interface, signature="ss")
1940
def ClientNotFound(self, fingerprint, address):
1944
@dbus.service.signal(_interface, signature="os")
1945
def ClientRemoved(self, objpath, name):
1115
1949
@dbus.service.method(_interface, out_signature="ao")
1116
1950
def GetAllClients(self):
1117
return dbus.Array(c.dbus_object_path for c in clients)
1119
@dbus.service.method(_interface, out_signature="a{oa{sv}}")
1952
return dbus.Array(c.dbus_object_path
1953
for c in tcp_server.clients)
1955
@dbus.service.method(_interface,
1956
out_signature="a{oa{sv}}")
1120
1957
def GetAllClientsWithProperties(self):
1121
1959
return dbus.Dictionary(
1122
((c.dbus_object_path, c.GetAllProperties())
1960
((c.dbus_object_path, c.GetAll(""))
1961
for c in tcp_server.clients),
1124
1962
signature="oa{sv}")
1126
1964
@dbus.service.method(_interface, in_signature="o")
1127
1965
def RemoveClient(self, object_path):
1967
for c in tcp_server.clients:
1129
1968
if c.dbus_object_path == object_path:
1969
tcp_server.clients.remove(c)
1970
c.remove_from_connection()
1131
1971
# Don't signal anything except ClientRemoved
1972
c.disable(quiet=True)
1134
1973
# Emit D-Bus signal
1135
self.ClientRemoved(object_path)
1974
self.ClientRemoved(object_path, c.name)
1138
@dbus.service.method(_interface)
1976
raise KeyError(object_path)
1144
mandos_server = MandosServer()
1146
for client in clients:
1980
mandos_dbus_service = MandosDBusService()
1983
"Cleanup function; run on exit"
1986
while tcp_server.clients:
1987
client = tcp_server.clients.pop()
1989
client.remove_from_connection()
1990
client.disable_hook = None
1991
# Don't signal anything except ClientRemoved
1992
client.disable(quiet=True)
1995
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
1998
atexit.register(cleanup)
2000
for client in tcp_server.clients:
1148
2002
# Emit D-Bus signal
1149
mandos_server.ClientAdded(client.dbus_object_path,
1150
client.GetAllProperties())
2003
mandos_dbus_service.ClientAdded(client.dbus_object_path)
1151
2004
client.enable()
1153
2006
tcp_server.enable()