88
101
except ImportError:
89
102
SO_BINDTODEVICE = None
104
if sys.version_info.major == 2:
92
108
stored_state_file = "clients.pickle"
94
110
logger = logging.getLogger()
95
syslogger = (logging.handlers.SysLogHandler
96
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
97
address = str("/dev/log")))
100
if_nametoindex = (ctypes.cdll.LoadLibrary
101
(ctypes.util.find_library("c"))
114
if_nametoindex = ctypes.cdll.LoadLibrary(
115
ctypes.util.find_library("c")).if_nametoindex
103
116
except (OSError, AttributeError):
104
118
def if_nametoindex(interface):
105
119
"Get an interface index the hard way, i.e. using fcntl()"
106
120
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
107
121
with contextlib.closing(socket.socket()) as s:
108
122
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
109
struct.pack(str("16s16x"),
111
interface_index = struct.unpack(str("I"),
123
struct.pack(b"16s16x", interface))
124
interface_index = struct.unpack("I", ifreq[16:20])[0]
113
125
return interface_index
116
128
def initlogger(debug, level=logging.WARNING):
117
129
"""init logger and add loglevel"""
132
syslogger = (logging.handlers.SysLogHandler(
133
facility = logging.handlers.SysLogHandler.LOG_DAEMON,
134
address = "/dev/log"))
119
135
syslogger.setFormatter(logging.Formatter
120
136
('Mandos [%(process)d]: %(levelname)s:'
174
189
def password_encode(self, password):
175
190
# Passphrase can not be empty and can not contain newlines or
176
191
# NUL bytes. So we prefix it and hex encode it.
177
return b"mandos" + binascii.hexlify(password)
192
encoded = b"mandos" + binascii.hexlify(password)
193
if len(encoded) > 2048:
194
# GnuPG can't handle long passwords, so encode differently
195
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
196
.replace(b"\n", b"\\n")
197
.replace(b"\0", b"\\x00"))
179
200
def encrypt(self, data, password):
180
self.gnupg.passphrase = self.password_encode(password)
181
with open(os.devnull, "w") as devnull:
183
proc = self.gnupg.run(['--symmetric'],
184
create_fhs=['stdin', 'stdout'],
185
attach_fhs={'stderr': devnull})
186
with contextlib.closing(proc.handles['stdin']) as f:
188
with contextlib.closing(proc.handles['stdout']) as f:
189
ciphertext = f.read()
193
self.gnupg.passphrase = None
201
passphrase = self.password_encode(password)
202
with tempfile.NamedTemporaryFile(
203
dir=self.tempdir) as passfile:
204
passfile.write(passphrase)
206
proc = subprocess.Popen(['gpg', '--symmetric',
210
stdin = subprocess.PIPE,
211
stdout = subprocess.PIPE,
212
stderr = subprocess.PIPE)
213
ciphertext, err = proc.communicate(input = data)
214
if proc.returncode != 0:
194
216
return ciphertext
196
218
def decrypt(self, data, password):
197
self.gnupg.passphrase = self.password_encode(password)
198
with open(os.devnull, "w") as devnull:
200
proc = self.gnupg.run(['--decrypt'],
201
create_fhs=['stdin', 'stdout'],
202
attach_fhs={'stderr': devnull})
203
with contextlib.closing(proc.handles['stdin']) as f:
205
with contextlib.closing(proc.handles['stdout']) as f:
206
decrypted_plaintext = f.read()
210
self.gnupg.passphrase = None
219
passphrase = self.password_encode(password)
220
with tempfile.NamedTemporaryFile(
221
dir = self.tempdir) as passfile:
222
passfile.write(passphrase)
224
proc = subprocess.Popen(['gpg', '--decrypt',
228
stdin = subprocess.PIPE,
229
stdout = subprocess.PIPE,
230
stderr = subprocess.PIPE)
231
decrypted_plaintext, err = proc.communicate(input = data)
232
if proc.returncode != 0:
211
234
return decrypted_plaintext
214
237
class AvahiError(Exception):
215
238
def __init__(self, value, *args, **kwargs):
216
239
self.value = value
217
super(AvahiError, self).__init__(value, *args, **kwargs)
218
def __unicode__(self):
219
return unicode(repr(self.value))
240
return super(AvahiError, self).__init__(value, *args,
221
244
class AvahiServiceError(AvahiError):
224
248
class AvahiGroupError(AvahiError):
266
297
self.entry_group_state_changed_match = None
299
def rename(self, remove=True):
269
300
"""Derived from the Avahi example code"""
270
301
if self.rename_count >= self.max_renames:
271
302
logger.critical("No suitable Zeroconf service name found"
272
303
" after %i retries, exiting.",
273
304
self.rename_count)
274
305
raise AvahiServiceError("Too many renames")
275
self.name = unicode(self.server
276
.GetAlternativeServiceName(self.name))
307
self.server.GetAlternativeServiceName(self.name))
308
self.rename_count += 1
277
309
logger.info("Changing Zeroconf service name to %r ...",
282
315
except dbus.exceptions.DBusException as error:
283
logger.critical("D-Bus Exception", exc_info=error)
286
self.rename_count += 1
316
if (error.get_dbus_name()
317
== "org.freedesktop.Avahi.CollisionError"):
318
logger.info("Local Zeroconf service name collision.")
319
return self.rename(remove=False)
321
logger.critical("D-Bus Exception", exc_info=error)
288
325
def remove(self):
289
326
"""Derived from the Avahi example code"""
345
381
def server_state_changed(self, state, error=None):
346
382
"""Derived from the Avahi example code"""
347
383
logger.debug("Avahi server state change: %i", state)
348
bad_states = { avahi.SERVER_INVALID:
349
"Zeroconf server invalid",
350
avahi.SERVER_REGISTERING: None,
351
avahi.SERVER_COLLISION:
352
"Zeroconf server name collision",
353
avahi.SERVER_FAILURE:
354
"Zeroconf server failure" }
385
avahi.SERVER_INVALID: "Zeroconf server invalid",
386
avahi.SERVER_REGISTERING: None,
387
avahi.SERVER_COLLISION: "Zeroconf server name collision",
388
avahi.SERVER_FAILURE: "Zeroconf server failure",
355
390
if state in bad_states:
356
391
if bad_states[state] is not None:
357
392
if error is None:
376
422
follow_name_owner_changes=True),
377
423
avahi.DBUS_INTERFACE_SERVER)
378
424
self.server.connect_to_signal("StateChanged",
379
self.server_state_changed)
425
self.server_state_changed)
380
426
self.server_state_changed(self.server.GetState())
382
429
class AvahiServiceToSyslog(AvahiService):
430
def rename(self, *args, **kwargs):
384
431
"""Add the new name to the syslog messages"""
385
ret = AvahiService.rename(self)
386
syslogger.setFormatter(logging.Formatter
387
('Mandos ({0}) [%(process)d]:'
388
' %(levelname)s: %(message)s'
432
ret = AvahiService.rename(self, *args, **kwargs)
433
syslogger.setFormatter(logging.Formatter(
434
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
392
def timedelta_to_milliseconds(td):
393
"Convert a datetime.timedelta() to milliseconds"
394
return ((td.days * 24 * 60 * 60 * 1000)
395
+ (td.seconds * 1000)
396
+ (td.microseconds // 1000))
438
def call_pipe(connection, # : multiprocessing.Connection
439
func, *args, **kwargs):
440
"""This function is meant to be called by multiprocessing.Process
442
This function runs func(*args, **kwargs), and writes the resulting
443
return value on the provided multiprocessing.Connection.
445
connection.send(func(*args, **kwargs))
398
448
class Client(object):
399
449
"""A representation of a client host served by this server.
436
488
runtime_expansions: Allowed attributes for runtime expansion.
437
489
expires: datetime.datetime(); time (UTC) when a client will be
438
490
disabled, or None
491
server_settings: The server_settings dict from main()
441
494
runtime_expansions = ("approval_delay", "approval_duration",
442
"created", "enabled", "fingerprint",
443
"host", "interval", "last_checked_ok",
495
"created", "enabled", "expires",
496
"fingerprint", "host", "interval",
497
"last_approval_request", "last_checked_ok",
444
498
"last_enabled", "name", "timeout")
445
client_defaults = { "timeout": "5m",
446
"extended_timeout": "15m",
448
"checker": "fping -q -- %%(host)s",
450
"approval_delay": "0s",
451
"approval_duration": "1s",
452
"approved_by_default": "True",
456
def timeout_milliseconds(self):
457
"Return the 'timeout' attribute in milliseconds"
458
return timedelta_to_milliseconds(self.timeout)
460
def extended_timeout_milliseconds(self):
461
"Return the 'extended_timeout' attribute in milliseconds"
462
return timedelta_to_milliseconds(self.extended_timeout)
464
def interval_milliseconds(self):
465
"Return the 'interval' attribute in milliseconds"
466
return timedelta_to_milliseconds(self.interval)
468
def approval_delay_milliseconds(self):
469
return timedelta_to_milliseconds(self.approval_delay)
501
"extended_timeout": "PT15M",
503
"checker": "fping -q -- %%(host)s",
505
"approval_delay": "PT0S",
506
"approval_duration": "PT1S",
507
"approved_by_default": "True",
472
512
def config_parser(config):
547
590
self.current_checker_command = None
548
591
self.approved = None
549
592
self.approvals_pending = 0
550
self.changedstate = (multiprocessing_manager
551
.Condition(multiprocessing_manager
553
self.client_structure = [attr for attr in
554
self.__dict__.iterkeys()
593
self.changedstate = multiprocessing_manager.Condition(
594
multiprocessing_manager.Lock())
595
self.client_structure = [attr
596
for attr in self.__dict__.iterkeys()
555
597
if not attr.startswith("_")]
556
598
self.client_structure.append("client_structure")
558
for name, t in inspect.getmembers(type(self),
600
for name, t in inspect.getmembers(
601
type(self), lambda obj: isinstance(obj, property)):
562
602
if not name.startswith("_"):
563
603
self.client_structure.append(name)
572
612
if getattr(self, "enabled", False):
573
613
# Already enabled
575
self.send_changedstate()
576
615
self.expires = datetime.datetime.utcnow() + self.timeout
577
616
self.enabled = True
578
617
self.last_enabled = datetime.datetime.utcnow()
579
618
self.init_checker()
619
self.send_changedstate()
581
621
def disable(self, quiet=True):
582
622
"""Disable this client."""
583
623
if not getattr(self, "enabled", False):
586
self.send_changedstate()
588
626
logger.info("Disabling client %s", self.name)
589
if getattr(self, "disable_initiator_tag", False):
627
if getattr(self, "disable_initiator_tag", None) is not None:
590
628
gobject.source_remove(self.disable_initiator_tag)
591
629
self.disable_initiator_tag = None
592
630
self.expires = None
593
if getattr(self, "checker_initiator_tag", False):
631
if getattr(self, "checker_initiator_tag", None) is not None:
594
632
gobject.source_remove(self.checker_initiator_tag)
595
633
self.checker_initiator_tag = None
596
634
self.stop_checker()
597
635
self.enabled = False
637
self.send_changedstate()
598
638
# Do not run this again if called by a gobject.timeout_add
604
644
def init_checker(self):
605
645
# Schedule a new checker to be started an 'interval' from now,
606
646
# and every interval from then on.
607
self.checker_initiator_tag = (gobject.timeout_add
608
(self.interval_milliseconds(),
647
if self.checker_initiator_tag is not None:
648
gobject.source_remove(self.checker_initiator_tag)
649
self.checker_initiator_tag = gobject.timeout_add(
650
int(self.interval.total_seconds() * 1000),
610
652
# Schedule a disable() when 'timeout' has passed
611
self.disable_initiator_tag = (gobject.timeout_add
612
(self.timeout_milliseconds(),
653
if self.disable_initiator_tag is not None:
654
gobject.source_remove(self.disable_initiator_tag)
655
self.disable_initiator_tag = gobject.timeout_add(
656
int(self.timeout.total_seconds() * 1000), self.disable)
614
657
# Also start a new checker *right now*.
615
658
self.start_checker()
617
def checker_callback(self, pid, condition, command):
660
def checker_callback(self, source, condition, connection,
618
662
"""The checker has completed, so take appropriate actions."""
619
663
self.checker_callback_tag = None
620
664
self.checker = None
621
if os.WIFEXITED(condition):
622
self.last_checker_status = os.WEXITSTATUS(condition)
665
# Read return code from connection (see call_pipe)
666
returncode = connection.recv()
670
self.last_checker_status = returncode
671
self.last_checker_signal = None
623
672
if self.last_checker_status == 0:
624
673
logger.info("Checker for %(name)s succeeded",
626
675
self.checked_ok()
628
logger.info("Checker for %(name)s failed",
677
logger.info("Checker for %(name)s failed", vars(self))
631
679
self.last_checker_status = -1
680
self.last_checker_signal = -returncode
632
681
logger.warning("Checker for %(name)s crashed?",
635
685
def checked_ok(self):
636
686
"""Assert that the client has been seen, alive and well."""
637
687
self.last_checked_ok = datetime.datetime.utcnow()
638
688
self.last_checker_status = 0
689
self.last_checker_signal = None
639
690
self.bump_timeout()
641
692
def bump_timeout(self, timeout=None):
667
718
# than 'timeout' for the client to be disabled, which is as it
670
# If a checker exists, make sure it is not a zombie
672
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
673
except (AttributeError, OSError) as error:
674
if (isinstance(error, OSError)
675
and error.errno != errno.ECHILD):
679
logger.warning("Checker was a zombie")
680
gobject.source_remove(self.checker_callback_tag)
681
self.checker_callback(pid, status,
682
self.current_checker_command)
721
if self.checker is not None and not self.checker.is_alive():
722
logger.warning("Checker was not alive; joining")
683
725
# Start a new checker if needed
684
726
if self.checker is None:
727
# Escape attributes for the shell
729
attr: re.escape(str(getattr(self, attr)))
730
for attr in self.runtime_expansions }
686
# In case checker_command has exactly one % operator
687
command = self.checker_command % self.host
689
# Escape attributes for the shell
690
escaped_attrs = dict(
692
re.escape(unicode(str(getattr(self, attr, "")),
696
self.runtime_expansions)
699
command = self.checker_command % escaped_attrs
700
except TypeError as error:
701
logger.error('Could not format string "%s"',
702
self.checker_command, exc_info=error)
703
return True # Try again later
732
command = self.checker_command % escaped_attrs
733
except TypeError as error:
734
logger.error('Could not format string "%s"',
735
self.checker_command,
737
return True # Try again later
704
738
self.current_checker_command = command
706
logger.info("Starting checker %r for %s",
708
# We don't need to redirect stdout and stderr, since
709
# in normal mode, that is already done by daemon(),
710
# and in debug mode we don't want to. (Stdin is
711
# always replaced by /dev/null.)
712
self.checker = subprocess.Popen(command,
715
self.checker_callback_tag = (gobject.child_watch_add
717
self.checker_callback,
719
# The checker may have completed before the gobject
720
# watch was added. Check for this.
721
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
723
gobject.source_remove(self.checker_callback_tag)
724
self.checker_callback(pid, status, command)
725
except OSError as error:
726
logger.error("Failed to start subprocess",
739
logger.info("Starting checker %r for %s", command,
741
# We don't need to redirect stdout and stderr, since
742
# in normal mode, that is already done by daemon(),
743
# and in debug mode we don't want to. (Stdin is
744
# always replaced by /dev/null.)
745
# The exception is when not debugging but nevertheless
746
# running in the foreground; use the previously
748
popen_args = { "close_fds": True,
751
if (not self.server_settings["debug"]
752
and self.server_settings["foreground"]):
753
popen_args.update({"stdout": wnull,
755
pipe = multiprocessing.Pipe(duplex = False)
756
self.checker = multiprocessing.Process(
758
args = (pipe[1], subprocess.call, command),
761
self.checker_callback_tag = gobject.io_add_watch(
762
pipe[0].fileno(), gobject.IO_IN,
763
self.checker_callback, pipe[0], command)
728
764
# Re-run this periodically if run by gobject.timeout_add
800
835
"""Decorator to annotate D-Bus methods, signals or properties
838
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
839
"org.freedesktop.DBus.Property."
840
"EmitsChangedSignal": "false"})
803
841
@dbus_service_property("org.example.Interface", signature="b",
805
@dbus_annotations({{"org.freedesktop.DBus.Deprecated": "true",
806
"org.freedesktop.DBus.Property."
807
"EmitsChangedSignal": "false"})
808
843
def Property_dbus_property(self):
809
844
return dbus.Boolean(False)
846
See also the DBusObjectWithAnnotations class.
811
849
def decorator(func):
812
850
func._dbus_annotations = annotations
817
856
class DBusPropertyException(dbus.exceptions.DBusException):
818
857
"""A base class for D-Bus property-related exceptions
820
def __unicode__(self):
821
return unicode(str(self))
824
862
class DBusPropertyAccessException(DBusPropertyException):
848
885
If called like _is_dbus_thing("method") it returns a function
849
886
suitable for use as predicate to inspect.getmembers().
851
return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),
888
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
854
891
def _get_all_dbus_things(self, thing):
855
892
"""Returns a generator of (name, attribute) pairs
857
return ((getattr(athing.__get__(self), "_dbus_name",
894
return ((getattr(athing.__get__(self), "_dbus_name", name),
859
895
athing.__get__(self))
860
896
for cls in self.__class__.__mro__
861
897
for name, athing in
862
inspect.getmembers(cls,
863
self._is_dbus_thing(thing)))
898
inspect.getmembers(cls, self._is_dbus_thing(thing)))
900
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
902
path_keyword = 'object_path',
903
connection_keyword = 'connection')
904
def Introspect(self, object_path, connection):
905
"""Overloading of standard D-Bus method.
907
Inserts annotation tags on methods and signals.
909
xmlstring = dbus.service.Object.Introspect(self, object_path,
912
document = xml.dom.minidom.parseString(xmlstring)
914
for if_tag in document.getElementsByTagName("interface"):
915
# Add annotation tags
916
for typ in ("method", "signal"):
917
for tag in if_tag.getElementsByTagName(typ):
919
for name, prop in (self.
920
_get_all_dbus_things(typ)):
921
if (name == tag.getAttribute("name")
922
and prop._dbus_interface
923
== if_tag.getAttribute("name")):
924
annots.update(getattr(
925
prop, "_dbus_annotations", {}))
926
for name, value in annots.items():
927
ann_tag = document.createElement(
929
ann_tag.setAttribute("name", name)
930
ann_tag.setAttribute("value", value)
931
tag.appendChild(ann_tag)
932
# Add interface annotation tags
933
for annotation, value in dict(
934
itertools.chain.from_iterable(
935
annotations().items()
936
for name, annotations
937
in self._get_all_dbus_things("interface")
938
if name == if_tag.getAttribute("name")
940
ann_tag = document.createElement("annotation")
941
ann_tag.setAttribute("name", annotation)
942
ann_tag.setAttribute("value", value)
943
if_tag.appendChild(ann_tag)
944
# Fix argument name for the Introspect method itself
945
if (if_tag.getAttribute("name")
946
== dbus.INTROSPECTABLE_IFACE):
947
for cn in if_tag.getElementsByTagName("method"):
948
if cn.getAttribute("name") == "Introspect":
949
for arg in cn.getElementsByTagName("arg"):
950
if (arg.getAttribute("direction")
952
arg.setAttribute("name",
954
xmlstring = document.toxml("utf-8")
956
except (AttributeError, xml.dom.DOMException,
957
xml.parsers.expat.ExpatError) as error:
958
logger.error("Failed to override Introspection method",
963
class DBusObjectWithProperties(DBusObjectWithAnnotations):
964
"""A D-Bus object with properties.
966
Classes inheriting from this can use the dbus_service_property
967
decorator to expose methods as D-Bus properties. It exposes the
968
standard Get(), Set(), and GetAll() methods on the D-Bus.
865
971
def _get_dbus_property(self, interface_name, property_name):
866
972
"""Returns a bound method if one exists which is a D-Bus
867
973
property with the specified name and interface.
869
for cls in self.__class__.__mro__:
870
for name, value in (inspect.getmembers
872
self._is_dbus_thing("property"))):
975
for cls in self.__class__.__mro__:
976
for name, value in inspect.getmembers(
977
cls, self._is_dbus_thing("property")):
873
978
if (value._dbus_name == property_name
874
979
and value._dbus_interface == interface_name):
875
980
return value.__get__(self)
877
982
# No such property
878
raise DBusPropertyNotFound(self.dbus_object_path + ":"
879
+ interface_name + "."
983
raise DBusPropertyNotFound("{}:{}.{}".format(
984
self.dbus_object_path, interface_name, property_name))
882
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
986
@dbus.service.method(dbus.PROPERTIES_IFACE,
883
988
out_signature="v")
884
989
def Get(self, interface_name, property_name):
885
990
"""Standard D-Bus property Get() method, see D-Bus standard.
943
1059
Inserts property tags and interface annotation tags.
945
xmlstring = dbus.service.Object.Introspect(self, object_path,
1061
xmlstring = DBusObjectWithAnnotations.Introspect(self,
948
1065
document = xml.dom.minidom.parseString(xmlstring)
949
1067
def make_tag(document, name, prop):
950
1068
e = document.createElement("property")
951
1069
e.setAttribute("name", name)
952
1070
e.setAttribute("type", prop._dbus_signature)
953
1071
e.setAttribute("access", prop._dbus_access)
955
1074
for if_tag in document.getElementsByTagName("interface"):
956
1075
# Add property tags
957
1076
for tag in (make_tag(document, name, prop)
960
1079
if prop._dbus_interface
961
1080
== if_tag.getAttribute("name")):
962
1081
if_tag.appendChild(tag)
963
# Add annotation tags
964
for typ in ("method", "signal", "property"):
965
for tag in if_tag.getElementsByTagName(typ):
967
for name, prop in (self.
968
_get_all_dbus_things(typ)):
969
if (name == tag.getAttribute("name")
970
and prop._dbus_interface
971
== if_tag.getAttribute("name")):
972
annots.update(getattr
976
for name, value in annots.iteritems():
977
ann_tag = document.createElement(
979
ann_tag.setAttribute("name", name)
980
ann_tag.setAttribute("value", value)
981
tag.appendChild(ann_tag)
982
# Add interface annotation tags
983
for annotation, value in dict(
984
itertools.chain.from_iterable(
985
annotations().iteritems()
986
for name, annotations in
987
self._get_all_dbus_things("interface")
988
if name == if_tag.getAttribute("name")
990
ann_tag = document.createElement("annotation")
991
ann_tag.setAttribute("name", annotation)
992
ann_tag.setAttribute("value", value)
993
if_tag.appendChild(ann_tag)
1082
# Add annotation tags for properties
1083
for tag in if_tag.getElementsByTagName("property"):
1085
for name, prop in self._get_all_dbus_things(
1087
if (name == tag.getAttribute("name")
1088
and prop._dbus_interface
1089
== if_tag.getAttribute("name")):
1090
annots.update(getattr(
1091
prop, "_dbus_annotations", {}))
1092
for name, value in annots.items():
1093
ann_tag = document.createElement(
1095
ann_tag.setAttribute("name", name)
1096
ann_tag.setAttribute("value", value)
1097
tag.appendChild(ann_tag)
994
1098
# Add the names to the return values for the
995
1099
# "org.freedesktop.DBus.Properties" methods
996
1100
if (if_tag.getAttribute("name")
1056
1160
# Ignore non-D-Bus attributes, and D-Bus attributes
1057
1161
# with the wrong interface name
1058
1162
if (not hasattr(attribute, "_dbus_interface")
1059
or not attribute._dbus_interface
1060
.startswith(orig_interface_name)):
1163
or not attribute._dbus_interface.startswith(
1164
orig_interface_name)):
1062
1166
# Create an alternate D-Bus interface name based on
1063
1167
# the current name
1064
alt_interface = (attribute._dbus_interface
1065
.replace(orig_interface_name,
1066
alt_interface_name))
1168
alt_interface = attribute._dbus_interface.replace(
1169
orig_interface_name, alt_interface_name)
1067
1170
interface_names.add(alt_interface)
1068
1171
# Is this a D-Bus signal?
1069
1172
if getattr(attribute, "_dbus_is_signal", False):
1070
# Extract the original non-method function by
1072
nonmethod_func = (dict(
1173
if sys.version_info.major == 2:
1174
# Extract the original non-method undecorated
1175
# function by black magic
1176
nonmethod_func = (dict(
1073
1177
zip(attribute.func_code.co_freevars,
1074
attribute.__closure__))["func"]
1178
attribute.__closure__))
1179
["func"].cell_contents)
1181
nonmethod_func = attribute
1076
1182
# Create a new, but exactly alike, function
1077
1183
# object, and decorate it to be a new D-Bus signal
1078
1184
# with the alternate D-Bus interface name
1079
new_function = (dbus.service.signal
1081
attribute._dbus_signature)
1082
(types.FunctionType(
1083
nonmethod_func.func_code,
1084
nonmethod_func.func_globals,
1085
nonmethod_func.func_name,
1086
nonmethod_func.func_defaults,
1087
nonmethod_func.func_closure)))
1185
if sys.version_info.major == 2:
1186
new_function = types.FunctionType(
1187
nonmethod_func.func_code,
1188
nonmethod_func.func_globals,
1189
nonmethod_func.func_name,
1190
nonmethod_func.func_defaults,
1191
nonmethod_func.func_closure)
1193
new_function = types.FunctionType(
1194
nonmethod_func.__code__,
1195
nonmethod_func.__globals__,
1196
nonmethod_func.__name__,
1197
nonmethod_func.__defaults__,
1198
nonmethod_func.__closure__)
1199
new_function = (dbus.service.signal(
1201
attribute._dbus_signature)(new_function))
1088
1202
# Copy annotations, if any
1090
new_function._dbus_annotations = (
1091
dict(attribute._dbus_annotations))
1204
new_function._dbus_annotations = dict(
1205
attribute._dbus_annotations)
1092
1206
except AttributeError:
1094
1208
# Define a creator of a function to call both the
1114
1230
# object. Decorate it to be a new D-Bus method
1115
1231
# with the alternate D-Bus interface name. Add it
1116
1232
# to the class.
1117
attr[attrname] = (dbus.service.method
1119
attribute._dbus_in_signature,
1120
attribute._dbus_out_signature)
1122
(attribute.func_code,
1123
attribute.func_globals,
1124
attribute.func_name,
1125
attribute.func_defaults,
1126
attribute.func_closure)))
1234
dbus.service.method(
1236
attribute._dbus_in_signature,
1237
attribute._dbus_out_signature)
1238
(types.FunctionType(attribute.func_code,
1239
attribute.func_globals,
1240
attribute.func_name,
1241
attribute.func_defaults,
1242
attribute.func_closure)))
1127
1243
# Copy annotations, if any
1129
attr[attrname]._dbus_annotations = (
1130
dict(attribute._dbus_annotations))
1245
attr[attrname]._dbus_annotations = dict(
1246
attribute._dbus_annotations)
1131
1247
except AttributeError:
1133
1249
# Is this a D-Bus property?
1136
1252
# object, and decorate it to be a new D-Bus
1137
1253
# property with the alternate D-Bus interface
1138
1254
# name. Add it to the class.
1139
attr[attrname] = (dbus_service_property
1141
attribute._dbus_signature,
1142
attribute._dbus_access,
1144
._dbus_get_args_options
1147
(attribute.func_code,
1148
attribute.func_globals,
1149
attribute.func_name,
1150
attribute.func_defaults,
1151
attribute.func_closure)))
1255
attr[attrname] = (dbus_service_property(
1256
alt_interface, attribute._dbus_signature,
1257
attribute._dbus_access,
1258
attribute._dbus_get_args_options
1260
(types.FunctionType(
1261
attribute.func_code,
1262
attribute.func_globals,
1263
attribute.func_name,
1264
attribute.func_defaults,
1265
attribute.func_closure)))
1152
1266
# Copy annotations, if any
1154
attr[attrname]._dbus_annotations = (
1155
dict(attribute._dbus_annotations))
1268
attr[attrname]._dbus_annotations = dict(
1269
attribute._dbus_annotations)
1156
1270
except AttributeError:
1158
1272
# Is this a D-Bus interface?
1212
1329
Client.__init__(self, *args, **kwargs)
1213
1330
# Only now, when this client is initialized, can it show up on
1215
client_object_name = unicode(self.name).translate(
1332
client_object_name = str(self.name).translate(
1216
1333
{ord("."): ord("_"),
1217
1334
ord("-"): ord("_")})
1218
self.dbus_object_path = (dbus.ObjectPath
1219
("/clients/" + client_object_name))
1335
self.dbus_object_path = dbus.ObjectPath(
1336
"/clients/" + client_object_name)
1220
1337
DBusObjectWithProperties.__init__(self, self.bus,
1221
1338
self.dbus_object_path)
1223
def notifychangeproperty(transform_func,
1224
dbus_name, type_func=lambda x: x,
1340
def notifychangeproperty(transform_func, dbus_name,
1341
type_func=lambda x: x,
1343
invalidate_only=False,
1344
_interface=_interface):
1226
1345
""" Modify a variable so that it's a property which announces
1227
1346
its changes to DBus.
1233
1352
to the D-Bus. Default: no transform
1234
1353
variant_level: D-Bus variant level. Default: 1
1236
attrname = "_{0}".format(dbus_name)
1355
attrname = "_{}".format(dbus_name)
1237
1357
def setter(self, value):
1238
1358
if hasattr(self, "dbus_object_path"):
1239
1359
if (not hasattr(self, attrname) or
1240
1360
type_func(getattr(self, attrname, None))
1241
1361
!= type_func(value)):
1242
dbus_value = transform_func(type_func(value),
1245
self.PropertyChanged(dbus.String(dbus_name),
1363
self.PropertiesChanged(
1364
_interface, dbus.Dictionary(),
1365
dbus.Array((dbus_name, )))
1367
dbus_value = transform_func(
1369
variant_level = variant_level)
1370
self.PropertyChanged(dbus.String(dbus_name),
1372
self.PropertiesChanged(
1374
dbus.Dictionary({ dbus.String(dbus_name):
1247
1377
setattr(self, attrname, value)
1249
1379
return property(lambda self: getattr(self, attrname), setter)
1266
1396
datetime_to_dbus, "LastApprovalRequest")
1267
1397
approved_by_default = notifychangeproperty(dbus.Boolean,
1268
1398
"ApprovedByDefault")
1269
approval_delay = notifychangeproperty(dbus.UInt64,
1272
timedelta_to_milliseconds)
1399
approval_delay = notifychangeproperty(
1400
dbus.UInt64, "ApprovalDelay",
1401
type_func = lambda td: td.total_seconds() * 1000)
1273
1402
approval_duration = notifychangeproperty(
1274
1403
dbus.UInt64, "ApprovalDuration",
1275
type_func = timedelta_to_milliseconds)
1404
type_func = lambda td: td.total_seconds() * 1000)
1276
1405
host = notifychangeproperty(dbus.String, "Host")
1277
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1279
timedelta_to_milliseconds)
1406
timeout = notifychangeproperty(
1407
dbus.UInt64, "Timeout",
1408
type_func = lambda td: td.total_seconds() * 1000)
1280
1409
extended_timeout = notifychangeproperty(
1281
1410
dbus.UInt64, "ExtendedTimeout",
1282
type_func = timedelta_to_milliseconds)
1283
interval = notifychangeproperty(dbus.UInt64,
1286
timedelta_to_milliseconds)
1411
type_func = lambda td: td.total_seconds() * 1000)
1412
interval = notifychangeproperty(
1413
dbus.UInt64, "Interval",
1414
type_func = lambda td: td.total_seconds() * 1000)
1287
1415
checker_command = notifychangeproperty(dbus.String, "Checker")
1416
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1417
invalidate_only=True)
1289
1419
del notifychangeproperty
1297
1427
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1298
1428
Client.__del__(self, *args, **kwargs)
1300
def checker_callback(self, pid, condition, command,
1302
self.checker_callback_tag = None
1304
if os.WIFEXITED(condition):
1305
exitstatus = os.WEXITSTATUS(condition)
1430
def checker_callback(self, source, condition,
1431
connection, command, *args, **kwargs):
1432
ret = Client.checker_callback(self, source, condition,
1433
connection, command, *args,
1435
exitstatus = self.last_checker_status
1306
1437
# Emit D-Bus signal
1307
1438
self.CheckerCompleted(dbus.Int16(exitstatus),
1308
dbus.Int64(condition),
1439
# This is specific to GNU libC
1440
dbus.Int64(exitstatus << 8),
1309
1441
dbus.String(command))
1311
1443
# Emit D-Bus signal
1312
1444
self.CheckerCompleted(dbus.Int16(-1),
1313
dbus.Int64(condition),
1446
# This is specific to GNU libC
1448
| self.last_checker_signal),
1314
1449
dbus.String(command))
1316
return Client.checker_callback(self, pid, condition, command,
1319
1452
def start_checker(self, *args, **kwargs):
1320
old_checker = self.checker
1321
if self.checker is not None:
1322
old_checker_pid = self.checker.pid
1324
old_checker_pid = None
1453
old_checker_pid = getattr(self.checker, "pid", None)
1325
1454
r = Client.start_checker(self, *args, **kwargs)
1326
1455
# Only if new checker process was started
1327
1456
if (self.checker is not None
1443
1571
self.approved_by_default = bool(value)
1445
1573
# ApprovalDelay - property
1446
@dbus_service_property(_interface, signature="t",
1574
@dbus_service_property(_interface,
1447
1576
access="readwrite")
1448
1577
def ApprovalDelay_dbus_property(self, value=None):
1449
1578
if value is None: # get
1450
return dbus.UInt64(self.approval_delay_milliseconds())
1579
return dbus.UInt64(self.approval_delay.total_seconds()
1451
1581
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1453
1583
# ApprovalDuration - property
1454
@dbus_service_property(_interface, signature="t",
1584
@dbus_service_property(_interface,
1455
1586
access="readwrite")
1456
1587
def ApprovalDuration_dbus_property(self, value=None):
1457
1588
if value is None: # get
1458
return dbus.UInt64(timedelta_to_milliseconds(
1459
self.approval_duration))
1589
return dbus.UInt64(self.approval_duration.total_seconds()
1460
1591
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1462
1593
# Name - property
1595
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1463
1596
@dbus_service_property(_interface, signature="s", access="read")
1464
1597
def Name_dbus_property(self):
1465
1598
return dbus.String(self.name)
1467
1600
# Fingerprint - property
1602
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1468
1603
@dbus_service_property(_interface, signature="s", access="read")
1469
1604
def Fingerprint_dbus_property(self):
1470
1605
return dbus.String(self.fingerprint)
1472
1607
# Host - property
1473
@dbus_service_property(_interface, signature="s",
1608
@dbus_service_property(_interface,
1474
1610
access="readwrite")
1475
1611
def Host_dbus_property(self, value=None):
1476
1612
if value is None: # get
1477
1613
return dbus.String(self.host)
1478
self.host = unicode(value)
1614
self.host = str(value)
1480
1616
# Created - property
1618
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1481
1619
@dbus_service_property(_interface, signature="s", access="read")
1482
1620
def Created_dbus_property(self):
1483
1621
return datetime_to_dbus(self.created)
1524
1663
return datetime_to_dbus(self.last_approval_request)
1526
1665
# Timeout - property
1527
@dbus_service_property(_interface, signature="t",
1666
@dbus_service_property(_interface,
1528
1668
access="readwrite")
1529
1669
def Timeout_dbus_property(self, value=None):
1530
1670
if value is None: # get
1531
return dbus.UInt64(self.timeout_milliseconds())
1671
return dbus.UInt64(self.timeout.total_seconds() * 1000)
1672
old_timeout = self.timeout
1532
1673
self.timeout = datetime.timedelta(0, 0, 0, value)
1533
# Reschedule timeout
1674
# Reschedule disabling
1534
1675
if self.enabled:
1535
1676
now = datetime.datetime.utcnow()
1536
time_to_die = timedelta_to_milliseconds(
1537
(self.last_checked_ok + self.timeout) - now)
1538
if time_to_die <= 0:
1677
self.expires += self.timeout - old_timeout
1678
if self.expires <= now:
1539
1679
# The timeout has passed
1542
self.expires = (now +
1543
datetime.timedelta(milliseconds =
1545
1682
if (getattr(self, "disable_initiator_tag", None)
1548
1685
gobject.source_remove(self.disable_initiator_tag)
1549
self.disable_initiator_tag = (gobject.timeout_add
1686
self.disable_initiator_tag = gobject.timeout_add(
1687
int((self.expires - now).total_seconds() * 1000),
1553
1690
# ExtendedTimeout - property
1554
@dbus_service_property(_interface, signature="t",
1691
@dbus_service_property(_interface,
1555
1693
access="readwrite")
1556
1694
def ExtendedTimeout_dbus_property(self, value=None):
1557
1695
if value is None: # get
1558
return dbus.UInt64(self.extended_timeout_milliseconds())
1696
return dbus.UInt64(self.extended_timeout.total_seconds()
1559
1698
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1561
1700
# Interval - property
1562
@dbus_service_property(_interface, signature="t",
1701
@dbus_service_property(_interface,
1563
1703
access="readwrite")
1564
1704
def Interval_dbus_property(self, value=None):
1565
1705
if value is None: # get
1566
return dbus.UInt64(self.interval_milliseconds())
1706
return dbus.UInt64(self.interval.total_seconds() * 1000)
1567
1707
self.interval = datetime.timedelta(0, 0, 0, value)
1568
1708
if getattr(self, "checker_initiator_tag", None) is None:
1570
1710
if self.enabled:
1571
1711
# Reschedule checker run
1572
1712
gobject.source_remove(self.checker_initiator_tag)
1573
self.checker_initiator_tag = (gobject.timeout_add
1574
(value, self.start_checker))
1575
self.start_checker() # Start one now, too
1713
self.checker_initiator_tag = gobject.timeout_add(
1714
value, self.start_checker)
1715
self.start_checker() # Start one now, too
1577
1717
# Checker - property
1578
@dbus_service_property(_interface, signature="s",
1718
@dbus_service_property(_interface,
1579
1720
access="readwrite")
1580
1721
def Checker_dbus_property(self, value=None):
1581
1722
if value is None: # get
1582
1723
return dbus.String(self.checker_command)
1583
self.checker_command = unicode(value)
1724
self.checker_command = str(value)
1585
1726
# CheckerRunning - property
1586
@dbus_service_property(_interface, signature="b",
1727
@dbus_service_property(_interface,
1587
1729
access="readwrite")
1588
1730
def CheckerRunning_dbus_property(self, value=None):
1589
1731
if value is None: # get
1815
1962
def fingerprint(openpgp):
1816
1963
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1817
1964
# New GnuTLS "datum" with the OpenPGP public key
1818
datum = (gnutls.library.types
1819
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1822
ctypes.c_uint(len(openpgp))))
1965
datum = gnutls.library.types.gnutls_datum_t(
1966
ctypes.cast(ctypes.c_char_p(openpgp),
1967
ctypes.POINTER(ctypes.c_ubyte)),
1968
ctypes.c_uint(len(openpgp)))
1823
1969
# New empty GnuTLS certificate
1824
1970
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1825
(gnutls.library.functions
1826
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
1971
gnutls.library.functions.gnutls_openpgp_crt_init(
1827
1973
# Import the OpenPGP public key into the certificate
1828
(gnutls.library.functions
1829
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1830
gnutls.library.constants
1831
.GNUTLS_OPENPGP_FMT_RAW))
1974
gnutls.library.functions.gnutls_openpgp_crt_import(
1975
crt, ctypes.byref(datum),
1976
gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)
1832
1977
# Verify the self signature in the key
1833
1978
crtverify = ctypes.c_uint()
1834
(gnutls.library.functions
1835
.gnutls_openpgp_crt_verify_self(crt, 0,
1836
ctypes.byref(crtverify)))
1979
gnutls.library.functions.gnutls_openpgp_crt_verify_self(
1980
crt, 0, ctypes.byref(crtverify))
1837
1981
if crtverify.value != 0:
1838
1982
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1839
raise (gnutls.errors.CertificateSecurityError
1983
raise gnutls.errors.CertificateSecurityError(
1841
1985
# New buffer for the fingerprint
1842
1986
buf = ctypes.create_string_buffer(20)
1843
1987
buf_len = ctypes.c_size_t()
1844
1988
# Get the fingerprint from the certificate into the buffer
1845
(gnutls.library.functions
1846
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1847
ctypes.byref(buf_len)))
1989
gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint(
1990
crt, ctypes.byref(buf), ctypes.byref(buf_len))
1848
1991
# Deinit the certificate
1849
1992
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1850
1993
# Convert the buffer to a Python bytestring
1899
2044
interface: None or a network interface name (string)
1900
2045
use_ipv6: Boolean; to use IPv6 or not
1902
2048
def __init__(self, server_address, RequestHandlerClass,
1903
interface=None, use_ipv6=True):
2052
"""If socketfd is set, use that file descriptor instead of
2053
creating a new one with socket.socket().
1904
2055
self.interface = interface
1906
2057
self.address_family = socket.AF_INET6
2058
if socketfd is not None:
2059
# Save the file descriptor
2060
self.socketfd = socketfd
2061
# Save the original socket.socket() function
2062
self.socket_socket = socket.socket
2063
# To implement --socket, we monkey patch socket.socket.
2065
# (When socketserver.TCPServer is a new-style class, we
2066
# could make self.socket into a property instead of monkey
2067
# patching socket.socket.)
2069
# Create a one-time-only replacement for socket.socket()
2070
@functools.wraps(socket.socket)
2071
def socket_wrapper(*args, **kwargs):
2072
# Restore original function so subsequent calls are
2074
socket.socket = self.socket_socket
2075
del self.socket_socket
2076
# This time only, return a new socket object from the
2077
# saved file descriptor.
2078
return socket.fromfd(self.socketfd, *args, **kwargs)
2079
# Replace socket.socket() function with wrapper
2080
socket.socket = socket_wrapper
2081
# The socketserver.TCPServer.__init__ will call
2082
# socket.socket(), which might be our replacement,
2083
# socket_wrapper(), if socketfd was set.
1907
2084
socketserver.TCPServer.__init__(self, server_address,
1908
2085
RequestHandlerClass)
1909
2087
def server_bind(self):
1910
2088
"""This overrides the normal server_bind() function
1911
2089
to bind to an interface if one was specified, and also NOT to
1917
2095
self.interface)
1920
self.socket.setsockopt(socket.SOL_SOCKET,
2098
self.socket.setsockopt(
2099
socket.SOL_SOCKET, SO_BINDTODEVICE,
2100
(self.interface + "\0").encode("utf-8"))
1924
2101
except socket.error as error:
1925
if error[0] == errno.EPERM:
1926
logger.error("No permission to"
1927
" bind to interface %s",
1929
elif error[0] == errno.ENOPROTOOPT:
2102
if error.errno == errno.EPERM:
2103
logger.error("No permission to bind to"
2104
" interface %s", self.interface)
2105
elif error.errno == errno.ENOPROTOOPT:
1930
2106
logger.error("SO_BINDTODEVICE not available;"
1931
2107
" cannot bind to interface %s",
1932
2108
self.interface)
2109
elif error.errno == errno.ENODEV:
2110
logger.error("Interface %s does not exist,"
2111
" cannot bind", self.interface)
1935
2114
# Only bind(2) the socket if we really need to.
1986
2171
def add_pipe(self, parent_pipe, proc):
1987
2172
# Call "handle_ipc" for both data and EOF events
1988
gobject.io_add_watch(parent_pipe.fileno(),
1989
gobject.IO_IN | gobject.IO_HUP,
1990
functools.partial(self.handle_ipc,
2173
gobject.io_add_watch(
2174
parent_pipe.fileno(),
2175
gobject.IO_IN | gobject.IO_HUP,
2176
functools.partial(self.handle_ipc,
2177
parent_pipe = parent_pipe,
1995
def handle_ipc(self, source, condition, parent_pipe=None,
1996
proc = None, client_object=None):
2180
def handle_ipc(self, source, condition,
2183
client_object=None):
1997
2184
# error, or the other end of multiprocessing.Pipe has closed
1998
2185
if condition & (gobject.IO_ERR | gobject.IO_HUP):
1999
2186
# Wait for other process to exit
2249
def rfc3339_duration_to_delta(duration):
2250
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2252
>>> rfc3339_duration_to_delta("P7D")
2253
datetime.timedelta(7)
2254
>>> rfc3339_duration_to_delta("PT60S")
2255
datetime.timedelta(0, 60)
2256
>>> rfc3339_duration_to_delta("PT60M")
2257
datetime.timedelta(0, 3600)
2258
>>> rfc3339_duration_to_delta("PT24H")
2259
datetime.timedelta(1)
2260
>>> rfc3339_duration_to_delta("P1W")
2261
datetime.timedelta(7)
2262
>>> rfc3339_duration_to_delta("PT5M30S")
2263
datetime.timedelta(0, 330)
2264
>>> rfc3339_duration_to_delta("P1DT3M20S")
2265
datetime.timedelta(1, 200)
2268
# Parsing an RFC 3339 duration with regular expressions is not
2269
# possible - there would have to be multiple places for the same
2270
# values, like seconds. The current code, while more esoteric, is
2271
# cleaner without depending on a parsing library. If Python had a
2272
# built-in library for parsing we would use it, but we'd like to
2273
# avoid excessive use of external libraries.
2275
# New type for defining tokens, syntax, and semantics all-in-one
2276
Token = collections.namedtuple("Token", (
2277
"regexp", # To match token; if "value" is not None, must have
2278
# a "group" containing digits
2279
"value", # datetime.timedelta or None
2280
"followers")) # Tokens valid after this token
2281
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2282
# the "duration" ABNF definition in RFC 3339, Appendix A.
2283
token_end = Token(re.compile(r"$"), None, frozenset())
2284
token_second = Token(re.compile(r"(\d+)S"),
2285
datetime.timedelta(seconds=1),
2286
frozenset((token_end, )))
2287
token_minute = Token(re.compile(r"(\d+)M"),
2288
datetime.timedelta(minutes=1),
2289
frozenset((token_second, token_end)))
2290
token_hour = Token(re.compile(r"(\d+)H"),
2291
datetime.timedelta(hours=1),
2292
frozenset((token_minute, token_end)))
2293
token_time = Token(re.compile(r"T"),
2295
frozenset((token_hour, token_minute,
2297
token_day = Token(re.compile(r"(\d+)D"),
2298
datetime.timedelta(days=1),
2299
frozenset((token_time, token_end)))
2300
token_month = Token(re.compile(r"(\d+)M"),
2301
datetime.timedelta(weeks=4),
2302
frozenset((token_day, token_end)))
2303
token_year = Token(re.compile(r"(\d+)Y"),
2304
datetime.timedelta(weeks=52),
2305
frozenset((token_month, token_end)))
2306
token_week = Token(re.compile(r"(\d+)W"),
2307
datetime.timedelta(weeks=1),
2308
frozenset((token_end, )))
2309
token_duration = Token(re.compile(r"P"), None,
2310
frozenset((token_year, token_month,
2311
token_day, token_time,
2313
# Define starting values
2314
value = datetime.timedelta() # Value so far
2316
followers = frozenset((token_duration, )) # Following valid tokens
2317
s = duration # String left to parse
2318
# Loop until end token is found
2319
while found_token is not token_end:
2320
# Search for any currently valid tokens
2321
for token in followers:
2322
match = token.regexp.match(s)
2323
if match is not None:
2325
if token.value is not None:
2326
# Value found, parse digits
2327
factor = int(match.group(1), 10)
2328
# Add to value so far
2329
value += factor * token.value
2330
# Strip token from string
2331
s = token.regexp.sub("", s, 1)
2334
# Set valid next tokens
2335
followers = found_token.followers
2338
# No currently valid tokens were found
2339
raise ValueError("Invalid RFC 3339 duration: {!r}"
2062
2345
def string_to_delta(interval):
2063
2346
"""Parse a string and return a datetime.timedelta
2157
2445
parser.add_argument("--no-dbus", action="store_false",
2158
2446
dest="use_dbus", help="Do not provide D-Bus"
2159
" system bus interface")
2447
" system bus interface", default=None)
2160
2448
parser.add_argument("--no-ipv6", action="store_false",
2161
dest="use_ipv6", help="Do not use IPv6")
2449
dest="use_ipv6", help="Do not use IPv6",
2162
2451
parser.add_argument("--no-restore", action="store_false",
2163
2452
dest="restore", help="Do not restore stored"
2453
" state", default=None)
2454
parser.add_argument("--socket", type=int,
2455
help="Specify a file descriptor to a network"
2456
" socket to use instead of creating one")
2165
2457
parser.add_argument("--statedir", metavar="DIR",
2166
2458
help="Directory to save/restore state in")
2459
parser.add_argument("--foreground", action="store_true",
2460
help="Run in foreground", default=None)
2461
parser.add_argument("--no-zeroconf", action="store_false",
2462
dest="zeroconf", help="Do not use Zeroconf",
2168
2465
options = parser.parse_args()
2170
2467
if options.check:
2469
fail_count, test_count = doctest.testmod()
2470
sys.exit(os.EX_OK if fail_count == 0 else 1)
2175
2472
# Default values for config file for server-global settings
2176
2473
server_defaults = { "interface": "",
2179
2476
"debug": "False",
2181
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2478
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2479
":+SIGN-DSA-SHA256",
2182
2480
"servicename": "Mandos",
2183
2481
"use_dbus": "True",
2184
2482
"use_ipv6": "True",
2185
2483
"debuglevel": "",
2186
2484
"restore": "True",
2187
"statedir": "/var/lib/mandos"
2486
"statedir": "/var/lib/mandos",
2487
"foreground": "False",
2190
2491
# Parse config file for server-global settings
2191
2492
server_config = configparser.SafeConfigParser(server_defaults)
2192
2493
del server_defaults
2193
server_config.read(os.path.join(options.configdir,
2494
server_config.read(os.path.join(options.configdir, "mandos.conf"))
2195
2495
# Convert the SafeConfigParser object to a dict
2196
2496
server_settings = server_config.defaults()
2197
2497
# Use the appropriate methods on the non-string config options
2198
for option in ("debug", "use_dbus", "use_ipv6"):
2498
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
2199
2499
server_settings[option] = server_config.getboolean("DEFAULT",
2201
2501
if server_settings["port"]:
2202
2502
server_settings["port"] = server_config.getint("DEFAULT",
2504
if server_settings["socket"]:
2505
server_settings["socket"] = server_config.getint("DEFAULT",
2507
# Later, stdin will, and stdout and stderr might, be dup'ed
2508
# over with an opened os.devnull. But we don't want this to
2509
# happen with a supplied network socket.
2510
if 0 <= server_settings["socket"] <= 2:
2511
server_settings["socket"] = os.dup(server_settings
2204
2513
del server_config
2206
2515
# Override the settings from the config file with command line
2207
2516
# options, if set.
2208
2517
for option in ("interface", "address", "port", "debug",
2209
"priority", "servicename", "configdir",
2210
"use_dbus", "use_ipv6", "debuglevel", "restore",
2518
"priority", "servicename", "configdir", "use_dbus",
2519
"use_ipv6", "debuglevel", "restore", "statedir",
2520
"socket", "foreground", "zeroconf"):
2212
2521
value = getattr(options, option)
2213
2522
if value is not None:
2214
2523
server_settings[option] = value
2216
2525
# Force all strings to be unicode
2217
2526
for option in server_settings.keys():
2218
if type(server_settings[option]) is str:
2219
server_settings[option] = unicode(server_settings[option])
2527
if isinstance(server_settings[option], bytes):
2528
server_settings[option] = (server_settings[option]
2530
# Force all boolean options to be boolean
2531
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2532
"foreground", "zeroconf"):
2533
server_settings[option] = bool(server_settings[option])
2534
# Debug implies foreground
2535
if server_settings["debug"]:
2536
server_settings["foreground"] = True
2220
2537
# Now we have our good server settings in "server_settings"
2222
2539
##################################################################
2541
if (not server_settings["zeroconf"]
2542
and not (server_settings["port"]
2543
or server_settings["socket"] != "")):
2544
parser.error("Needs port or socket to work without Zeroconf")
2224
2546
# For convenience
2225
2547
debug = server_settings["debug"]
2226
2548
debuglevel = server_settings["debuglevel"]
2254
2577
global mandos_dbus_service
2255
2578
mandos_dbus_service = None
2257
tcp_server = MandosServer((server_settings["address"],
2258
server_settings["port"]),
2260
interface=(server_settings["interface"]
2264
server_settings["priority"],
2267
pidfilename = "/var/run/mandos.pid"
2581
if server_settings["socket"] != "":
2582
socketfd = server_settings["socket"]
2583
tcp_server = MandosServer(
2584
(server_settings["address"], server_settings["port"]),
2586
interface=(server_settings["interface"] or None),
2588
gnutls_priority=server_settings["priority"],
2592
pidfilename = "/run/mandos.pid"
2593
if not os.path.isdir("/run/."):
2594
pidfilename = "/var/run/mandos.pid"
2269
pidfile = open(pidfilename, "w")
2597
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2270
2598
except IOError as e:
2271
2599
logger.error("Could not open file %r", pidfilename,
2326
2656
bus_name = dbus.service.BusName("se.recompile.Mandos",
2327
bus, do_not_queue=True)
2328
old_bus_name = (dbus.service.BusName
2329
("se.bsnet.fukt.Mandos", bus,
2331
except dbus.exceptions.NameExistsException as e:
2659
old_bus_name = dbus.service.BusName(
2660
"se.bsnet.fukt.Mandos", bus,
2662
except dbus.exceptions.DBusException as e:
2332
2663
logger.error("Disabling D-Bus:", exc_info=e)
2333
2664
use_dbus = False
2334
2665
server_settings["use_dbus"] = False
2335
2666
tcp_server.use_dbus = False
2336
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2337
service = AvahiServiceToSyslog(name =
2338
server_settings["servicename"],
2339
servicetype = "_mandos._tcp",
2340
protocol = protocol, bus = bus)
2341
if server_settings["interface"]:
2342
service.interface = (if_nametoindex
2343
(str(server_settings["interface"])))
2668
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2669
service = AvahiServiceToSyslog(
2670
name = server_settings["servicename"],
2671
servicetype = "_mandos._tcp",
2672
protocol = protocol,
2674
if server_settings["interface"]:
2675
service.interface = if_nametoindex(
2676
server_settings["interface"].encode("utf-8"))
2345
2678
global multiprocessing_manager
2346
2679
multiprocessing_manager = multiprocessing.Manager()
2353
2686
old_client_settings = {}
2354
2687
clients_data = {}
2689
# This is used to redirect stdout and stderr for checker processes
2691
wnull = open(os.devnull, "w") # A writable /dev/null
2692
# Only used if server is running in foreground but not in debug
2694
if debug or not foreground:
2356
2697
# Get client data and settings from last running state.
2357
2698
if server_settings["restore"]:
2359
2700
with open(stored_state_path, "rb") as stored_state:
2360
clients_data, old_client_settings = (pickle.load
2701
clients_data, old_client_settings = pickle.load(
2362
2703
os.remove(stored_state_path)
2363
2704
except IOError as e:
2364
2705
if e.errno == errno.ENOENT:
2365
logger.warning("Could not load persistent state: {0}"
2366
.format(os.strerror(e.errno)))
2706
logger.warning("Could not load persistent state:"
2707
" {}".format(os.strerror(e.errno)))
2368
2709
logger.critical("Could not load persistent state:",
2371
2712
except EOFError as e:
2372
2713
logger.warning("Could not load persistent state: "
2373
"EOFError:", exc_info=e)
2375
2717
with PGPEngine() as pgp:
2376
for client_name, client in clients_data.iteritems():
2718
for client_name, client in clients_data.items():
2719
# Skip removed clients
2720
if client_name not in client_settings:
2377
2723
# Decide which value to use after restoring saved state.
2378
2724
# We have three different values: Old config file,
2379
2725
# new config file, and saved state.
2400
2746
if datetime.datetime.utcnow() >= client["expires"]:
2401
2747
if not client["last_checked_ok"]:
2402
2748
logger.warning(
2403
"disabling client {0} - Client never "
2404
"performed a successful checker"
2405
.format(client_name))
2749
"disabling client {} - Client never "
2750
"performed a successful checker".format(
2406
2752
client["enabled"] = False
2407
2753
elif client["last_checker_status"] != 0:
2408
2754
logger.warning(
2409
"disabling client {0} - Client "
2410
"last checker failed with error code {1}"
2411
.format(client_name,
2412
client["last_checker_status"]))
2755
"disabling client {} - Client last"
2756
" checker failed with error code"
2759
client["last_checker_status"]))
2413
2760
client["enabled"] = False
2415
client["expires"] = (datetime.datetime
2417
+ client["timeout"])
2762
client["expires"] = (
2763
datetime.datetime.utcnow()
2764
+ client["timeout"])
2418
2765
logger.debug("Last checker succeeded,"
2419
" keeping {0} enabled"
2420
.format(client_name))
2766
" keeping {} enabled".format(
2422
client["secret"] = (
2423
pgp.decrypt(client["encrypted_secret"],
2424
client_settings[client_name]
2769
client["secret"] = pgp.decrypt(
2770
client["encrypted_secret"],
2771
client_settings[client_name]["secret"])
2426
2772
except PGPError:
2427
2773
# If decryption fails, we use secret from new settings
2428
logger.debug("Failed to decrypt {0} old secret"
2429
.format(client_name))
2430
client["secret"] = (
2431
client_settings[client_name]["secret"])
2774
logger.debug("Failed to decrypt {} old secret".format(
2776
client["secret"] = (client_settings[client_name]
2433
2779
# Add/remove clients based on new changes made to config
2434
2780
for client_name in (set(old_client_settings)
2439
2785
clients_data[client_name] = client_settings[client_name]
2441
2787
# Create all client objects
2442
for client_name, client in clients_data.iteritems():
2788
for client_name, client in clients_data.items():
2443
2789
tcp_server.clients[client_name] = client_class(
2444
name = client_name, settings = client)
2792
server_settings = server_settings)
2446
2794
if not tcp_server.clients:
2447
2795
logger.warning("No clients defined")
2453
pidfile.write(str(pid) + "\n".encode("utf-8"))
2456
logger.error("Could not write to file %r with PID %d",
2459
# "pidfile" was never created
2798
if pidfile is not None:
2802
print(pid, file=pidfile)
2804
logger.error("Could not write to file %r with PID %d",
2461
2807
del pidfilename
2462
signal.signal(signal.SIGINT, signal.SIG_IGN)
2464
2809
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2465
2810
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2468
@alternate_dbus_interfaces({"se.recompile.Mandos":
2469
"se.bsnet.fukt.Mandos"})
2470
class MandosDBusService(DBusObjectWithProperties):
2814
@alternate_dbus_interfaces(
2815
{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
2816
class MandosDBusService(DBusObjectWithAnnotations):
2471
2817
"""A D-Bus proxy object"""
2472
2819
def __init__(self):
2473
2820
dbus.service.Object.__init__(self, bus, "/")
2474
2822
_interface = "se.recompile.Mandos"
2476
@dbus_interface_annotations(_interface)
2478
return { "org.freedesktop.DBus.Property"
2479
".EmitsChangedSignal":
2482
2824
@dbus.service.signal(_interface, signature="o")
2483
2825
def ClientAdded(self, objpath):
2565
2908
del client_settings[client.name]["secret"]
2568
with (tempfile.NamedTemporaryFile
2569
(mode='wb', suffix=".pickle", prefix='clients-',
2570
dir=os.path.dirname(stored_state_path),
2571
delete=False)) as stored_state:
2911
with tempfile.NamedTemporaryFile(
2915
dir=os.path.dirname(stored_state_path),
2916
delete=False) as stored_state:
2572
2917
pickle.dump((clients, client_settings), stored_state)
2573
tempname=stored_state.name
2918
tempname = stored_state.name
2574
2919
os.rename(tempname, stored_state_path)
2575
2920
except (IOError, OSError) as e: