101
85
except ImportError:
102
86
SO_BINDTODEVICE = None
104
if sys.version_info.major == 2:
108
90
stored_state_file = "clients.pickle"
110
92
logger = logging.getLogger()
93
syslogger = (logging.handlers.SysLogHandler
94
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
95
address = str("/dev/log")))
114
if_nametoindex = ctypes.cdll.LoadLibrary(
115
ctypes.util.find_library("c")).if_nametoindex
98
if_nametoindex = (ctypes.cdll.LoadLibrary
99
(ctypes.util.find_library("c"))
116
101
except (OSError, AttributeError):
118
102
def if_nametoindex(interface):
119
103
"Get an interface index the hard way, i.e. using fcntl()"
120
104
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
121
105
with contextlib.closing(socket.socket()) as s:
122
106
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
123
struct.pack(b"16s16x", interface))
124
interface_index = struct.unpack("I", ifreq[16:20])[0]
107
struct.pack(str("16s16x"),
109
interface_index = struct.unpack(str("I"),
125
111
return interface_index
128
def initlogger(debug, level=logging.WARNING):
114
def initlogger(level=logging.WARNING):
129
115
"""init logger and add loglevel"""
132
syslogger = (logging.handlers.SysLogHandler(
133
facility = logging.handlers.SysLogHandler.LOG_DAEMON,
134
address = "/dev/log"))
135
117
syslogger.setFormatter(logging.Formatter
136
118
('Mandos [%(process)d]: %(levelname)s:'
138
120
logger.addHandler(syslogger)
141
console = logging.StreamHandler()
142
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
146
logger.addHandler(console)
122
console = logging.StreamHandler()
123
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
127
logger.addHandler(console)
147
128
logger.setLevel(level)
150
class PGPError(Exception):
151
"""Exception if encryption/decryption fails"""
131
class CryptoError(Exception):
155
class PGPEngine(object):
135
class Crypto(object):
156
136
"""A simple class for OpenPGP symmetric encryption & decryption"""
158
137
def __init__(self):
138
self.gnupg = GnuPGInterface.GnuPG()
159
139
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
160
self.gnupgargs = ['--batch',
161
'--home', self.tempdir,
140
self.gnupg = GnuPGInterface.GnuPG()
141
self.gnupg.options.meta_interactive = False
142
self.gnupg.options.homedir = self.tempdir
143
self.gnupg.options.extra_args.extend(['--force-mdc',
166
146
def __enter__(self):
169
def __exit__(self, exc_type, exc_value, traceback):
149
def __exit__ (self, exc_type, exc_value, traceback):
189
169
def password_encode(self, password):
190
170
# Passphrase can not be empty and can not contain newlines or
191
171
# NUL bytes. So we prefix it and hex encode it.
192
encoded = b"mandos" + binascii.hexlify(password)
193
if len(encoded) > 2048:
194
# GnuPG can't handle long passwords, so encode differently
195
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
196
.replace(b"\n", b"\\n")
197
.replace(b"\0", b"\\x00"))
172
return b"mandos" + binascii.hexlify(password)
200
174
def encrypt(self, data, password):
201
passphrase = self.password_encode(password)
202
with tempfile.NamedTemporaryFile(
203
dir=self.tempdir) as passfile:
204
passfile.write(passphrase)
206
proc = subprocess.Popen(['gpg', '--symmetric',
210
stdin = subprocess.PIPE,
211
stdout = subprocess.PIPE,
212
stderr = subprocess.PIPE)
213
ciphertext, err = proc.communicate(input = data)
214
if proc.returncode != 0:
175
self.gnupg.passphrase = self.password_encode(password)
176
with open(os.devnull) as devnull:
178
proc = self.gnupg.run(['--symmetric'],
179
create_fhs=['stdin', 'stdout'],
180
attach_fhs={'stderr': devnull})
181
with contextlib.closing(proc.handles['stdin']) as f:
183
with contextlib.closing(proc.handles['stdout']) as f:
184
ciphertext = f.read()
188
self.gnupg.passphrase = None
216
189
return ciphertext
218
191
def decrypt(self, data, password):
219
passphrase = self.password_encode(password)
220
with tempfile.NamedTemporaryFile(
221
dir = self.tempdir) as passfile:
222
passfile.write(passphrase)
224
proc = subprocess.Popen(['gpg', '--decrypt',
228
stdin = subprocess.PIPE,
229
stdout = subprocess.PIPE,
230
stderr = subprocess.PIPE)
231
decrypted_plaintext, err = proc.communicate(input = data)
232
if proc.returncode != 0:
192
self.gnupg.passphrase = self.password_encode(password)
193
with open(os.devnull) as devnull:
195
proc = self.gnupg.run(['--decrypt'],
196
create_fhs=['stdin', 'stdout'],
197
attach_fhs={'stderr': devnull})
198
with contextlib.closing(proc.handles['stdin'] ) as f:
200
with contextlib.closing(proc.handles['stdout']) as f:
201
decrypted_plaintext = f.read()
205
self.gnupg.passphrase = None
234
206
return decrypted_plaintext
237
210
class AvahiError(Exception):
238
211
def __init__(self, value, *args, **kwargs):
239
212
self.value = value
240
return super(AvahiError, self).__init__(value, *args,
213
super(AvahiError, self).__init__(value, *args, **kwargs)
214
def __unicode__(self):
215
return unicode(repr(self.value))
244
217
class AvahiServiceError(AvahiError):
248
220
class AvahiGroupError(AvahiError):
453
411
interval: datetime.timedelta(); How often to start a new checker
454
412
last_approval_request: datetime.datetime(); (UTC) or None
455
413
last_checked_ok: datetime.datetime(); (UTC) or None
456
415
last_checker_status: integer between 0 and 255 reflecting exit
457
416
status of last checker. -1 reflects crashed
458
checker, -2 means no checker completed yet.
459
418
last_enabled: datetime.datetime(); (UTC) or None
460
419
name: string; from the config file, used in log messages and
461
420
D-Bus identifiers
462
421
secret: bytestring; sent verbatim (over TLS) to client
463
422
timeout: datetime.timedelta(); How long from last_checked_ok
464
423
until this client is disabled
465
extended_timeout: extra long timeout when secret has been sent
424
extended_timeout: extra long timeout when password has been sent
466
425
runtime_expansions: Allowed attributes for runtime expansion.
467
426
expires: datetime.datetime(); time (UTC) when a client will be
468
427
disabled, or None
469
server_settings: The server_settings dict from main()
472
430
runtime_expansions = ("approval_delay", "approval_duration",
473
"created", "enabled", "expires",
474
"fingerprint", "host", "interval",
475
"last_approval_request", "last_checked_ok",
431
"created", "enabled", "fingerprint",
432
"host", "interval", "last_checked_ok",
476
433
"last_enabled", "name", "timeout")
479
"extended_timeout": "PT15M",
481
"checker": "fping -q -- %%(host)s",
483
"approval_delay": "PT0S",
484
"approval_duration": "PT1S",
485
"approved_by_default": "True",
490
def config_parser(config):
491
"""Construct a new dict of client settings of this form:
492
{ client_name: {setting_name: value, ...}, ...}
493
with exceptions for any special settings as defined above.
494
NOTE: Must be a pure function. Must return the same result
495
value given the same arguments.
498
for client_name in config.sections():
499
section = dict(config.items(client_name))
500
client = settings[client_name] = {}
502
client["host"] = section["host"]
503
# Reformat values from string types to Python types
504
client["approved_by_default"] = config.getboolean(
505
client_name, "approved_by_default")
506
client["enabled"] = config.getboolean(client_name,
509
# Uppercase and remove spaces from fingerprint for later
510
# comparison purposes with return value from the
511
# fingerprint() function
512
client["fingerprint"] = (section["fingerprint"].upper()
514
if "secret" in section:
515
client["secret"] = section["secret"].decode("base64")
516
elif "secfile" in section:
517
with open(os.path.expanduser(os.path.expandvars
518
(section["secfile"])),
520
client["secret"] = secfile.read()
522
raise TypeError("No secret or secfile for section {}"
524
client["timeout"] = string_to_delta(section["timeout"])
525
client["extended_timeout"] = string_to_delta(
526
section["extended_timeout"])
527
client["interval"] = string_to_delta(section["interval"])
528
client["approval_delay"] = string_to_delta(
529
section["approval_delay"])
530
client["approval_duration"] = string_to_delta(
531
section["approval_duration"])
532
client["checker_command"] = section["checker"]
533
client["last_approval_request"] = None
534
client["last_checked_ok"] = None
535
client["last_checker_status"] = -2
539
def __init__(self, settings, name = None, server_settings=None):
435
def timeout_milliseconds(self):
436
"Return the 'timeout' attribute in milliseconds"
437
return _timedelta_to_milliseconds(self.timeout)
439
def extended_timeout_milliseconds(self):
440
"Return the 'extended_timeout' attribute in milliseconds"
441
return _timedelta_to_milliseconds(self.extended_timeout)
443
def interval_milliseconds(self):
444
"Return the 'interval' attribute in milliseconds"
445
return _timedelta_to_milliseconds(self.interval)
447
def approval_delay_milliseconds(self):
448
return _timedelta_to_milliseconds(self.approval_delay)
450
def __init__(self, name = None, config=None):
451
"""Note: the 'checker' key in 'config' sets the
452
'checker_command' attribute and *not* the 'checker'
541
if server_settings is None:
543
self.server_settings = server_settings
544
# adding all client settings
545
for setting, value in settings.items():
546
setattr(self, setting, value)
549
if not hasattr(self, "last_enabled"):
550
self.last_enabled = datetime.datetime.utcnow()
551
if not hasattr(self, "expires"):
552
self.expires = (datetime.datetime.utcnow()
555
self.last_enabled = None
558
457
logger.debug("Creating client %r", self.name)
458
# Uppercase and remove spaces from fingerprint for later
459
# comparison purposes with return value from the fingerprint()
461
self.fingerprint = (config["fingerprint"].upper()
559
463
logger.debug(" Fingerprint: %s", self.fingerprint)
560
self.created = settings.get("created",
561
datetime.datetime.utcnow())
563
# attributes specific for this server instance
464
if "secret" in config:
465
self.secret = config["secret"].decode("base64")
466
elif "secfile" in config:
467
with open(os.path.expanduser(os.path.expandvars
468
(config["secfile"])),
470
self.secret = secfile.read()
472
raise TypeError("No secret or secfile for client %s"
474
self.host = config.get("host", "")
475
self.created = datetime.datetime.utcnow()
476
self.enabled = config.get("enabled", True)
477
self.last_approval_request = None
479
self.last_enabled = datetime.datetime.utcnow()
481
self.last_enabled = None
482
self.last_checked_ok = None
483
self.last_checker_status = None
484
self.timeout = string_to_delta(config["timeout"])
485
self.extended_timeout = string_to_delta(config
486
["extended_timeout"])
487
self.interval = string_to_delta(config["interval"])
564
488
self.checker = None
565
489
self.checker_initiator_tag = None
566
490
self.disable_initiator_tag = None
492
self.expires = datetime.datetime.utcnow() + self.timeout
567
495
self.checker_callback_tag = None
496
self.checker_command = config["checker"]
568
497
self.current_checker_command = None
498
self._approved = None
499
self.approved_by_default = config.get("approved_by_default",
570
501
self.approvals_pending = 0
571
self.changedstate = multiprocessing_manager.Condition(
572
multiprocessing_manager.Lock())
573
self.client_structure = [attr
574
for attr in self.__dict__.iterkeys()
502
self.approval_delay = string_to_delta(
503
config["approval_delay"])
504
self.approval_duration = string_to_delta(
505
config["approval_duration"])
506
self.changedstate = (multiprocessing_manager
507
.Condition(multiprocessing_manager
509
self.client_structure = [attr for attr in
510
self.__dict__.iterkeys()
575
511
if not attr.startswith("_")]
576
512
self.client_structure.append("client_structure")
578
for name, t in inspect.getmembers(
579
type(self), lambda obj: isinstance(obj, property)):
514
for name, t in inspect.getmembers(type(self),
580
518
if not name.startswith("_"):
581
519
self.client_structure.append(name)
640
575
self.checker_callback_tag = None
641
576
self.checker = None
642
577
if os.WIFEXITED(condition):
643
self.last_checker_status = os.WEXITSTATUS(condition)
578
self.last_checker_status = os.WEXITSTATUS(condition)
644
579
if self.last_checker_status == 0:
645
580
logger.info("Checker for %(name)s succeeded",
647
582
self.checked_ok()
649
logger.info("Checker for %(name)s failed", vars(self))
584
logger.info("Checker for %(name)s failed",
651
587
self.last_checker_status = -1
652
588
logger.warning("Checker for %(name)s crashed?",
655
def checked_ok(self):
656
"""Assert that the client has been seen, alive and well."""
657
self.last_checked_ok = datetime.datetime.utcnow()
658
self.last_checker_status = 0
661
def bump_timeout(self, timeout=None):
662
"""Bump up the timeout for this client."""
591
def checked_ok(self, timeout=None):
592
"""Bump up the timeout for this client.
594
This should only be called when the client has been seen,
663
597
if timeout is None:
664
598
timeout = self.timeout
599
self.last_checked_ok = datetime.datetime.utcnow()
665
600
if self.disable_initiator_tag is not None:
666
601
gobject.source_remove(self.disable_initiator_tag)
667
self.disable_initiator_tag = None
668
602
if getattr(self, "enabled", False):
669
self.disable_initiator_tag = gobject.timeout_add(
670
int(timeout.total_seconds() * 1000), self.disable)
603
self.disable_initiator_tag = (gobject.timeout_add
604
(_timedelta_to_milliseconds
605
(timeout), self.disable))
671
606
self.expires = datetime.datetime.utcnow() + timeout
673
608
def need_approval(self):
703
637
self.current_checker_command)
704
638
# Start a new checker if needed
705
639
if self.checker is None:
706
# Escape attributes for the shell
708
attr: re.escape(str(getattr(self, attr)))
709
for attr in self.runtime_expansions }
711
command = self.checker_command % escaped_attrs
712
except TypeError as error:
713
logger.error('Could not format string "%s"',
714
self.checker_command,
716
return True # Try again later
641
# In case checker_command has exactly one % operator
642
command = self.checker_command % self.host
644
# Escape attributes for the shell
645
escaped_attrs = dict(
647
re.escape(unicode(str(getattr(self, attr, "")),
651
self.runtime_expansions)
654
command = self.checker_command % escaped_attrs
655
except TypeError as error:
656
logger.error('Could not format string "%s":'
657
' %s', self.checker_command, error)
658
return True # Try again later
717
659
self.current_checker_command = command
719
logger.info("Starting checker %r for %s", command,
661
logger.info("Starting checker %r for %s",
721
663
# We don't need to redirect stdout and stderr, since
722
664
# in normal mode, that is already done by daemon(),
723
665
# and in debug mode we don't want to. (Stdin is
724
666
# always replaced by /dev/null.)
725
# The exception is when not debugging but nevertheless
726
# running in the foreground; use the previously
729
if (not self.server_settings["debug"]
730
and self.server_settings["foreground"]):
731
popen_args.update({"stdout": wnull,
733
667
self.checker = subprocess.Popen(command,
738
except OSError as error:
739
logger.error("Failed to start subprocess",
742
self.checker_callback_tag = gobject.child_watch_add(
743
self.checker.pid, self.checker_callback, data=command)
744
# The checker may have completed before the gobject
745
# watch was added. Check for this.
670
self.checker_callback_tag = (gobject.child_watch_add
672
self.checker_callback,
674
# The checker may have completed before the gobject
675
# watch was added. Check for this.
747
676
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
678
gobject.source_remove(self.checker_callback_tag)
679
self.checker_callback(pid, status, command)
748
680
except OSError as error:
749
if error.errno == errno.ECHILD:
750
# This should never happen
751
logger.error("Child process vanished",
756
gobject.source_remove(self.checker_callback_tag)
757
self.checker_callback(pid, status, command)
681
logger.error("Failed to start subprocess: %s",
758
683
# Re-run this periodically if run by gobject.timeout_add
882
def _is_dbus_thing(thing):
883
"""Returns a function testing if an attribute is a D-Bus thing
885
If called like _is_dbus_thing("method") it returns a function
886
suitable for use as predicate to inspect.getmembers().
888
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
763
def _is_dbus_property(obj):
764
return getattr(obj, "_dbus_is_property", False)
891
def _get_all_dbus_things(self, thing):
766
def _get_all_dbus_properties(self):
892
767
"""Returns a generator of (name, attribute) pairs
894
return ((getattr(athing.__get__(self), "_dbus_name", name),
895
athing.__get__(self))
769
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
896
770
for cls in self.__class__.__mro__
898
inspect.getmembers(cls, self._is_dbus_thing(thing)))
772
inspect.getmembers(cls, self._is_dbus_property))
900
774
def _get_dbus_property(self, interface_name, property_name):
901
775
"""Returns a bound method if one exists which is a D-Bus
902
776
property with the specified name and interface.
904
for cls in self.__class__.__mro__:
905
for name, value in inspect.getmembers(
906
cls, self._is_dbus_thing("property")):
778
for cls in self.__class__.__mro__:
779
for name, value in (inspect.getmembers
780
(cls, self._is_dbus_property)):
907
781
if (value._dbus_name == property_name
908
782
and value._dbus_interface == interface_name):
909
783
return value.__get__(self)
911
785
# No such property
912
raise DBusPropertyNotFound("{}:{}.{}".format(
913
self.dbus_object_path, interface_name, property_name))
786
raise DBusPropertyNotFound(self.dbus_object_path + ":"
787
+ interface_name + "."
915
@dbus.service.method(dbus.PROPERTIES_IFACE,
790
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
917
791
out_signature="v")
918
792
def Get(self, interface_name, property_name):
919
793
"""Standard D-Bus property Get() method, see D-Bus standard.
966
837
if not hasattr(value, "variant_level"):
967
838
properties[name] = value
969
properties[name] = type(value)(
970
value, variant_level = value.variant_level + 1)
840
properties[name] = type(value)(value, variant_level=
841
value.variant_level+1)
971
842
return dbus.Dictionary(properties, signature="sv")
973
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
974
def PropertiesChanged(self, interface_name, changed_properties,
975
invalidated_properties):
976
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
981
844
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
982
845
out_signature="s",
983
846
path_keyword='object_path',
984
847
connection_keyword='connection')
985
848
def Introspect(self, object_path, connection):
986
"""Overloading of standard D-Bus method.
988
Inserts property tags and interface annotation tags.
849
"""Standard D-Bus method, overloaded to insert property tags.
990
851
xmlstring = dbus.service.Object.Introspect(self, object_path,
993
854
document = xml.dom.minidom.parseString(xmlstring)
995
855
def make_tag(document, name, prop):
996
856
e = document.createElement("property")
997
857
e.setAttribute("name", name)
998
858
e.setAttribute("type", prop._dbus_signature)
999
859
e.setAttribute("access", prop._dbus_access)
1002
861
for if_tag in document.getElementsByTagName("interface"):
1004
862
for tag in (make_tag(document, name, prop)
1006
in self._get_all_dbus_things("property")
864
in self._get_all_dbus_properties()
1007
865
if prop._dbus_interface
1008
866
== if_tag.getAttribute("name")):
1009
867
if_tag.appendChild(tag)
1010
# Add annotation tags
1011
for typ in ("method", "signal", "property"):
1012
for tag in if_tag.getElementsByTagName(typ):
1014
for name, prop in (self.
1015
_get_all_dbus_things(typ)):
1016
if (name == tag.getAttribute("name")
1017
and prop._dbus_interface
1018
== if_tag.getAttribute("name")):
1019
annots.update(getattr(
1020
prop, "_dbus_annotations", {}))
1021
for name, value in annots.items():
1022
ann_tag = document.createElement(
1024
ann_tag.setAttribute("name", name)
1025
ann_tag.setAttribute("value", value)
1026
tag.appendChild(ann_tag)
1027
# Add interface annotation tags
1028
for annotation, value in dict(
1029
itertools.chain.from_iterable(
1030
annotations().items()
1031
for name, annotations
1032
in self._get_all_dbus_things("interface")
1033
if name == if_tag.getAttribute("name")
1035
ann_tag = document.createElement("annotation")
1036
ann_tag.setAttribute("name", annotation)
1037
ann_tag.setAttribute("value", value)
1038
if_tag.appendChild(ann_tag)
1039
868
# Add the names to the return values for the
1040
869
# "org.freedesktop.DBus.Properties" methods
1041
870
if (if_tag.getAttribute("name")
1056
885
except (AttributeError, xml.dom.DOMException,
1057
886
xml.parsers.expat.ExpatError) as error:
1058
887
logger.error("Failed to override Introspection method",
1060
889
return xmlstring
1063
def datetime_to_dbus(dt, variant_level=0):
892
def datetime_to_dbus (dt, variant_level=0):
1064
893
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1066
895
return dbus.String("", variant_level = variant_level)
1067
return dbus.String(dt.isoformat(), variant_level=variant_level)
1070
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1071
"""A class decorator; applied to a subclass of
1072
dbus.service.Object, it will add alternate D-Bus attributes with
1073
interface names according to the "alt_interface_names" mapping.
1076
@alternate_dbus_interfaces({"org.example.Interface":
1077
"net.example.AlternateInterface"})
1078
class SampleDBusObject(dbus.service.Object):
1079
@dbus.service.method("org.example.Interface")
1080
def SampleDBusMethod():
1083
The above "SampleDBusMethod" on "SampleDBusObject" will be
1084
reachable via two interfaces: "org.example.Interface" and
1085
"net.example.AlternateInterface", the latter of which will have
1086
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1087
"true", unless "deprecate" is passed with a False value.
1089
This works for methods and signals, and also for D-Bus properties
1090
(from DBusObjectWithProperties) and interfaces (from the
1091
dbus_interface_annotations decorator).
896
return dbus.String(dt.isoformat(),
897
variant_level=variant_level)
900
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
902
"""Applied to an empty subclass of a D-Bus object, this metaclass
903
will add additional D-Bus attributes matching a certain pattern.
1095
for orig_interface_name, alt_interface_name in (
1096
alt_interface_names.items()):
1098
interface_names = set()
1099
# Go though all attributes of the class
1100
for attrname, attribute in inspect.getmembers(cls):
905
def __new__(mcs, name, bases, attr):
906
# Go through all the base classes which could have D-Bus
907
# methods, signals, or properties in them
908
for base in (b for b in bases
909
if issubclass(b, dbus.service.Object)):
910
# Go though all attributes of the base class
911
for attrname, attribute in inspect.getmembers(base):
1101
912
# Ignore non-D-Bus attributes, and D-Bus attributes
1102
913
# with the wrong interface name
1103
914
if (not hasattr(attribute, "_dbus_interface")
1104
or not attribute._dbus_interface.startswith(
1105
orig_interface_name)):
915
or not attribute._dbus_interface
916
.startswith("se.recompile.Mandos")):
1107
918
# Create an alternate D-Bus interface name based on
1108
919
# the current name
1109
alt_interface = attribute._dbus_interface.replace(
1110
orig_interface_name, alt_interface_name)
1111
interface_names.add(alt_interface)
920
alt_interface = (attribute._dbus_interface
921
.replace("se.recompile.Mandos",
922
"se.bsnet.fukt.Mandos"))
1112
923
# Is this a D-Bus signal?
1113
924
if getattr(attribute, "_dbus_is_signal", False):
1114
# Extract the original non-method undecorated
1115
# function by black magic
925
# Extract the original non-method function by
1116
927
nonmethod_func = (dict(
1117
zip(attribute.func_code.co_freevars,
1118
attribute.__closure__))
1119
["func"].cell_contents)
928
zip(attribute.func_code.co_freevars,
929
attribute.__closure__))["func"]
1120
931
# Create a new, but exactly alike, function
1121
932
# object, and decorate it to be a new D-Bus signal
1122
933
# with the alternate D-Bus interface name
1123
new_function = (dbus.service.signal(
1124
alt_interface, attribute._dbus_signature)
934
new_function = (dbus.service.signal
936
attribute._dbus_signature)
1125
937
(types.FunctionType(
1126
nonmethod_func.func_code,
1127
nonmethod_func.func_globals,
1128
nonmethod_func.func_name,
1129
nonmethod_func.func_defaults,
1130
nonmethod_func.func_closure)))
1131
# Copy annotations, if any
1133
new_function._dbus_annotations = dict(
1134
attribute._dbus_annotations)
1135
except AttributeError:
938
nonmethod_func.func_code,
939
nonmethod_func.func_globals,
940
nonmethod_func.func_name,
941
nonmethod_func.func_defaults,
942
nonmethod_func.func_closure)))
1137
943
# Define a creator of a function to call both the
1138
# original and alternate functions, so both the
1139
# original and alternate signals gets sent when
1140
# the function is called
944
# old and new functions, so both the old and new
945
# signals gets sent when the function is called
1141
946
def fixscope(func1, func2):
1142
947
"""This function is a scope container to pass
1143
948
func1 and func2 to the "call_both" function
1144
949
outside of its arguments"""
1146
950
def call_both(*args, **kwargs):
1147
951
"""This function will emit two D-Bus
1148
952
signals by calling func1 and func2"""
1149
953
func1(*args, **kwargs)
1150
954
func2(*args, **kwargs)
1152
955
return call_both
1153
956
# Create the "call_both" function and add it to
1155
attr[attrname] = fixscope(attribute, new_function)
958
attr[attrname] = fixscope(attribute,
1156
960
# Is this a D-Bus method?
1157
961
elif getattr(attribute, "_dbus_is_method", False):
1158
962
# Create a new, but exactly alike, function
1159
963
# object. Decorate it to be a new D-Bus method
1160
964
# with the alternate D-Bus interface name. Add it
1163
dbus.service.method(
1165
attribute._dbus_in_signature,
1166
attribute._dbus_out_signature)
1167
(types.FunctionType(attribute.func_code,
1168
attribute.func_globals,
1169
attribute.func_name,
1170
attribute.func_defaults,
1171
attribute.func_closure)))
1172
# Copy annotations, if any
1174
attr[attrname]._dbus_annotations = dict(
1175
attribute._dbus_annotations)
1176
except AttributeError:
966
attr[attrname] = (dbus.service.method
968
attribute._dbus_in_signature,
969
attribute._dbus_out_signature)
971
(attribute.func_code,
972
attribute.func_globals,
974
attribute.func_defaults,
975
attribute.func_closure)))
1178
976
# Is this a D-Bus property?
1179
977
elif getattr(attribute, "_dbus_is_property", False):
1180
978
# Create a new, but exactly alike, function
1181
979
# object, and decorate it to be a new D-Bus
1182
980
# property with the alternate D-Bus interface
1183
981
# name. Add it to the class.
1184
attr[attrname] = (dbus_service_property(
1185
alt_interface, attribute._dbus_signature,
1186
attribute._dbus_access,
1187
attribute._dbus_get_args_options
1189
(types.FunctionType(
1190
attribute.func_code,
1191
attribute.func_globals,
1192
attribute.func_name,
1193
attribute.func_defaults,
1194
attribute.func_closure)))
1195
# Copy annotations, if any
1197
attr[attrname]._dbus_annotations = dict(
1198
attribute._dbus_annotations)
1199
except AttributeError:
1201
# Is this a D-Bus interface?
1202
elif getattr(attribute, "_dbus_is_interface", False):
1203
# Create a new, but exactly alike, function
1204
# object. Decorate it to be a new D-Bus interface
1205
# with the alternate D-Bus interface name. Add it
1208
dbus_interface_annotations(alt_interface)
1209
(types.FunctionType(attribute.func_code,
1210
attribute.func_globals,
1211
attribute.func_name,
1212
attribute.func_defaults,
1213
attribute.func_closure)))
1215
# Deprecate all alternate interfaces
1216
iname="_AlternateDBusNames_interface_annotation{}"
1217
for interface_name in interface_names:
1219
@dbus_interface_annotations(interface_name)
1221
return { "org.freedesktop.DBus.Deprecated":
1223
# Find an unused name
1224
for aname in (iname.format(i)
1225
for i in itertools.count()):
1226
if aname not in attr:
1230
# Replace the class with a new subclass of it with
1231
# methods, signals, etc. as created above.
1232
cls = type(b"{}Alternate".format(cls.__name__),
1239
@alternate_dbus_interfaces({"se.recompile.Mandos":
1240
"se.bsnet.fukt.Mandos"})
982
attr[attrname] = (dbus_service_property
984
attribute._dbus_signature,
985
attribute._dbus_access,
987
._dbus_get_args_options
990
(attribute.func_code,
991
attribute.func_globals,
993
attribute.func_defaults,
994
attribute.func_closure)))
995
return type.__new__(mcs, name, bases, attr)
1241
998
class ClientDBus(Client, DBusObjectWithProperties):
1242
999
"""A Client class using D-Bus
1314
1059
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1315
1060
last_enabled = notifychangeproperty(datetime_to_dbus,
1317
checker = notifychangeproperty(
1318
dbus.Boolean, "CheckerRunning",
1319
type_func = lambda checker: checker is not None)
1062
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1063
type_func = lambda checker:
1064
checker is not None)
1320
1065
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1321
1066
"LastCheckedOK")
1322
last_checker_status = notifychangeproperty(dbus.Int16,
1323
"LastCheckerStatus")
1324
1067
last_approval_request = notifychangeproperty(
1325
1068
datetime_to_dbus, "LastApprovalRequest")
1326
1069
approved_by_default = notifychangeproperty(dbus.Boolean,
1327
1070
"ApprovedByDefault")
1328
approval_delay = notifychangeproperty(
1329
dbus.UInt64, "ApprovalDelay",
1330
type_func = lambda td: td.total_seconds() * 1000)
1071
approval_delay = notifychangeproperty(dbus.UInt16,
1074
_timedelta_to_milliseconds)
1331
1075
approval_duration = notifychangeproperty(
1332
dbus.UInt64, "ApprovalDuration",
1333
type_func = lambda td: td.total_seconds() * 1000)
1076
dbus.UInt16, "ApprovalDuration",
1077
type_func = _timedelta_to_milliseconds)
1334
1078
host = notifychangeproperty(dbus.String, "Host")
1335
timeout = notifychangeproperty(
1336
dbus.UInt64, "Timeout",
1337
type_func = lambda td: td.total_seconds() * 1000)
1079
timeout = notifychangeproperty(dbus.UInt16, "Timeout",
1081
_timedelta_to_milliseconds)
1338
1082
extended_timeout = notifychangeproperty(
1339
dbus.UInt64, "ExtendedTimeout",
1340
type_func = lambda td: td.total_seconds() * 1000)
1341
interval = notifychangeproperty(
1342
dbus.UInt64, "Interval",
1343
type_func = lambda td: td.total_seconds() * 1000)
1083
dbus.UInt16, "ExtendedTimeout",
1084
type_func = _timedelta_to_milliseconds)
1085
interval = notifychangeproperty(dbus.UInt16,
1088
_timedelta_to_milliseconds)
1344
1089
checker_command = notifychangeproperty(dbus.String, "Checker")
1345
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1346
invalidate_only=True)
1348
1091
del notifychangeproperty
1579
1322
return datetime_to_dbus(self.last_approval_request)
1581
1324
# Timeout - property
1582
@dbus_service_property(_interface,
1325
@dbus_service_property(_interface, signature="t",
1584
1326
access="readwrite")
1585
1327
def Timeout_dbus_property(self, value=None):
1586
1328
if value is None: # get
1587
return dbus.UInt64(self.timeout.total_seconds() * 1000)
1588
old_timeout = self.timeout
1329
return dbus.UInt64(self.timeout_milliseconds())
1589
1330
self.timeout = datetime.timedelta(0, 0, 0, value)
1590
# Reschedule disabling
1592
now = datetime.datetime.utcnow()
1593
self.expires += self.timeout - old_timeout
1594
if self.expires <= now:
1595
# The timeout has passed
1598
if (getattr(self, "disable_initiator_tag", None)
1601
gobject.source_remove(self.disable_initiator_tag)
1602
self.disable_initiator_tag = gobject.timeout_add(
1603
int((self.expires - now).total_seconds() * 1000),
1331
if getattr(self, "disable_initiator_tag", None) is None:
1333
# Reschedule timeout
1334
gobject.source_remove(self.disable_initiator_tag)
1335
self.disable_initiator_tag = None
1337
time_to_die = _timedelta_to_milliseconds((self
1342
if time_to_die <= 0:
1343
# The timeout has passed
1346
self.expires = (datetime.datetime.utcnow()
1347
+ datetime.timedelta(milliseconds =
1349
self.disable_initiator_tag = (gobject.timeout_add
1350
(time_to_die, self.disable))
1606
1352
# ExtendedTimeout - property
1607
@dbus_service_property(_interface,
1353
@dbus_service_property(_interface, signature="t",
1609
1354
access="readwrite")
1610
1355
def ExtendedTimeout_dbus_property(self, value=None):
1611
1356
if value is None: # get
1612
return dbus.UInt64(self.extended_timeout.total_seconds()
1357
return dbus.UInt64(self.extended_timeout_milliseconds())
1614
1358
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1616
1360
# Interval - property
1617
@dbus_service_property(_interface,
1361
@dbus_service_property(_interface, signature="t",
1619
1362
access="readwrite")
1620
1363
def Interval_dbus_property(self, value=None):
1621
1364
if value is None: # get
1622
return dbus.UInt64(self.interval.total_seconds() * 1000)
1365
return dbus.UInt64(self.interval_milliseconds())
1623
1366
self.interval = datetime.timedelta(0, 0, 0, value)
1624
1367
if getattr(self, "checker_initiator_tag", None) is None:
1626
1369
if self.enabled:
1627
1370
# Reschedule checker run
1628
1371
gobject.source_remove(self.checker_initiator_tag)
1629
self.checker_initiator_tag = gobject.timeout_add(
1630
value, self.start_checker)
1631
self.start_checker() # Start one now, too
1372
self.checker_initiator_tag = (gobject.timeout_add
1373
(value, self.start_checker))
1374
self.start_checker() # Start one now, too
1633
1376
# Checker - property
1634
@dbus_service_property(_interface,
1377
@dbus_service_property(_interface, signature="s",
1636
1378
access="readwrite")
1637
1379
def Checker_dbus_property(self, value=None):
1638
1380
if value is None: # get
1639
1381
return dbus.String(self.checker_command)
1640
self.checker_command = str(value)
1382
self.checker_command = value
1642
1384
# CheckerRunning - property
1643
@dbus_service_property(_interface,
1385
@dbus_service_property(_interface, signature="b",
1645
1386
access="readwrite")
1646
1387
def CheckerRunning_dbus_property(self, value=None):
1647
1388
if value is None: # get
1872
1619
def fingerprint(openpgp):
1873
1620
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1874
1621
# New GnuTLS "datum" with the OpenPGP public key
1875
datum = gnutls.library.types.gnutls_datum_t(
1876
ctypes.cast(ctypes.c_char_p(openpgp),
1877
ctypes.POINTER(ctypes.c_ubyte)),
1878
ctypes.c_uint(len(openpgp)))
1622
datum = (gnutls.library.types
1623
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1626
ctypes.c_uint(len(openpgp))))
1879
1627
# New empty GnuTLS certificate
1880
1628
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1881
gnutls.library.functions.gnutls_openpgp_crt_init(
1629
(gnutls.library.functions
1630
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
1883
1631
# Import the OpenPGP public key into the certificate
1884
gnutls.library.functions.gnutls_openpgp_crt_import(
1885
crt, ctypes.byref(datum),
1886
gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)
1632
(gnutls.library.functions
1633
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1634
gnutls.library.constants
1635
.GNUTLS_OPENPGP_FMT_RAW))
1887
1636
# Verify the self signature in the key
1888
1637
crtverify = ctypes.c_uint()
1889
gnutls.library.functions.gnutls_openpgp_crt_verify_self(
1890
crt, 0, ctypes.byref(crtverify))
1638
(gnutls.library.functions
1639
.gnutls_openpgp_crt_verify_self(crt, 0,
1640
ctypes.byref(crtverify)))
1891
1641
if crtverify.value != 0:
1892
1642
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1893
raise gnutls.errors.CertificateSecurityError(
1643
raise (gnutls.errors.CertificateSecurityError
1895
1645
# New buffer for the fingerprint
1896
1646
buf = ctypes.create_string_buffer(20)
1897
1647
buf_len = ctypes.c_size_t()
1898
1648
# Get the fingerprint from the certificate into the buffer
1899
gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint(
1900
crt, ctypes.byref(buf), ctypes.byref(buf_len))
1649
(gnutls.library.functions
1650
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1651
ctypes.byref(buf_len)))
1901
1652
# Deinit the certificate
1902
1653
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1903
1654
# Convert the buffer to a Python bytestring
1954
1704
interface: None or a network interface name (string)
1955
1705
use_ipv6: Boolean; to use IPv6 or not
1958
1707
def __init__(self, server_address, RequestHandlerClass,
1962
"""If socketfd is set, use that file descriptor instead of
1963
creating a new one with socket.socket().
1708
interface=None, use_ipv6=True):
1965
1709
self.interface = interface
1967
1711
self.address_family = socket.AF_INET6
1968
if socketfd is not None:
1969
# Save the file descriptor
1970
self.socketfd = socketfd
1971
# Save the original socket.socket() function
1972
self.socket_socket = socket.socket
1973
# To implement --socket, we monkey patch socket.socket.
1975
# (When socketserver.TCPServer is a new-style class, we
1976
# could make self.socket into a property instead of monkey
1977
# patching socket.socket.)
1979
# Create a one-time-only replacement for socket.socket()
1980
@functools.wraps(socket.socket)
1981
def socket_wrapper(*args, **kwargs):
1982
# Restore original function so subsequent calls are
1984
socket.socket = self.socket_socket
1985
del self.socket_socket
1986
# This time only, return a new socket object from the
1987
# saved file descriptor.
1988
return socket.fromfd(self.socketfd, *args, **kwargs)
1989
# Replace socket.socket() function with wrapper
1990
socket.socket = socket_wrapper
1991
# The socketserver.TCPServer.__init__ will call
1992
# socket.socket(), which might be our replacement,
1993
# socket_wrapper(), if socketfd was set.
1994
1712
socketserver.TCPServer.__init__(self, server_address,
1995
1713
RequestHandlerClass)
1997
1714
def server_bind(self):
1998
1715
"""This overrides the normal server_bind() function
1999
1716
to bind to an interface if one was specified, and also NOT to
2158
def rfc3339_duration_to_delta(duration):
2159
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2161
>>> rfc3339_duration_to_delta("P7D")
2162
datetime.timedelta(7)
2163
>>> rfc3339_duration_to_delta("PT60S")
2164
datetime.timedelta(0, 60)
2165
>>> rfc3339_duration_to_delta("PT60M")
2166
datetime.timedelta(0, 3600)
2167
>>> rfc3339_duration_to_delta("PT24H")
2168
datetime.timedelta(1)
2169
>>> rfc3339_duration_to_delta("P1W")
2170
datetime.timedelta(7)
2171
>>> rfc3339_duration_to_delta("PT5M30S")
2172
datetime.timedelta(0, 330)
2173
>>> rfc3339_duration_to_delta("P1DT3M20S")
2174
datetime.timedelta(1, 200)
2177
# Parsing an RFC 3339 duration with regular expressions is not
2178
# possible - there would have to be multiple places for the same
2179
# values, like seconds. The current code, while more esoteric, is
2180
# cleaner without depending on a parsing library. If Python had a
2181
# built-in library for parsing we would use it, but we'd like to
2182
# avoid excessive use of external libraries.
2184
# New type for defining tokens, syntax, and semantics all-in-one
2185
Token = collections.namedtuple("Token",
2186
("regexp", # To match token; if
2187
# "value" is not None,
2188
# must have a "group"
2190
"value", # datetime.timedelta or
2192
"followers")) # Tokens valid after
2194
Token = collections.namedtuple("Token", (
2195
"regexp", # To match token; if "value" is not None, must have
2196
# a "group" containing digits
2197
"value", # datetime.timedelta or None
2198
"followers")) # Tokens valid after this token
2199
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2200
# the "duration" ABNF definition in RFC 3339, Appendix A.
2201
token_end = Token(re.compile(r"$"), None, frozenset())
2202
token_second = Token(re.compile(r"(\d+)S"),
2203
datetime.timedelta(seconds=1),
2204
frozenset((token_end, )))
2205
token_minute = Token(re.compile(r"(\d+)M"),
2206
datetime.timedelta(minutes=1),
2207
frozenset((token_second, token_end)))
2208
token_hour = Token(re.compile(r"(\d+)H"),
2209
datetime.timedelta(hours=1),
2210
frozenset((token_minute, token_end)))
2211
token_time = Token(re.compile(r"T"),
2213
frozenset((token_hour, token_minute,
2215
token_day = Token(re.compile(r"(\d+)D"),
2216
datetime.timedelta(days=1),
2217
frozenset((token_time, token_end)))
2218
token_month = Token(re.compile(r"(\d+)M"),
2219
datetime.timedelta(weeks=4),
2220
frozenset((token_day, token_end)))
2221
token_year = Token(re.compile(r"(\d+)Y"),
2222
datetime.timedelta(weeks=52),
2223
frozenset((token_month, token_end)))
2224
token_week = Token(re.compile(r"(\d+)W"),
2225
datetime.timedelta(weeks=1),
2226
frozenset((token_end, )))
2227
token_duration = Token(re.compile(r"P"), None,
2228
frozenset((token_year, token_month,
2229
token_day, token_time,
2231
# Define starting values
2232
value = datetime.timedelta() # Value so far
2234
followers = frozenset((token_duration,)) # Following valid tokens
2235
s = duration # String left to parse
2236
# Loop until end token is found
2237
while found_token is not token_end:
2238
# Search for any currently valid tokens
2239
for token in followers:
2240
match = token.regexp.match(s)
2241
if match is not None:
2243
if token.value is not None:
2244
# Value found, parse digits
2245
factor = int(match.group(1), 10)
2246
# Add to value so far
2247
value += factor * token.value
2248
# Strip token from string
2249
s = token.regexp.sub("", s, 1)
2252
# Set valid next tokens
2253
followers = found_token.followers
2256
# No currently valid tokens were found
2257
raise ValueError("Invalid RFC 3339 duration")
2262
1881
def string_to_delta(interval):
2263
1882
"""Parse a string and return a datetime.timedelta
2393
1997
"debug": "False",
2395
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2396
":+SIGN-RSA-SHA224:+SIGN-RSA-RMD160",
1999
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2397
2000
"servicename": "Mandos",
2398
2001
"use_dbus": "True",
2399
2002
"use_ipv6": "True",
2400
2003
"debuglevel": "",
2401
2004
"restore": "True",
2403
"statedir": "/var/lib/mandos",
2404
"foreground": "False",
2005
"statedir": "/var/lib/mandos"
2408
2008
# Parse config file for server-global settings
2409
2009
server_config = configparser.SafeConfigParser(server_defaults)
2410
2010
del server_defaults
2411
server_config.read(os.path.join(options.configdir, "mandos.conf"))
2011
server_config.read(os.path.join(options.configdir,
2412
2013
# Convert the SafeConfigParser object to a dict
2413
2014
server_settings = server_config.defaults()
2414
2015
# Use the appropriate methods on the non-string config options
2415
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
2016
for option in ("debug", "use_dbus", "use_ipv6"):
2416
2017
server_settings[option] = server_config.getboolean("DEFAULT",
2418
2019
if server_settings["port"]:
2419
2020
server_settings["port"] = server_config.getint("DEFAULT",
2421
if server_settings["socket"]:
2422
server_settings["socket"] = server_config.getint("DEFAULT",
2424
# Later, stdin will, and stdout and stderr might, be dup'ed
2425
# over with an opened os.devnull. But we don't want this to
2426
# happen with a supplied network socket.
2427
if 0 <= server_settings["socket"] <= 2:
2428
server_settings["socket"] = os.dup(server_settings
2430
2022
del server_config
2432
2024
# Override the settings from the config file with command line
2433
2025
# options, if set.
2434
2026
for option in ("interface", "address", "port", "debug",
2435
"priority", "servicename", "configdir", "use_dbus",
2436
"use_ipv6", "debuglevel", "restore", "statedir",
2437
"socket", "foreground", "zeroconf"):
2027
"priority", "servicename", "configdir",
2028
"use_dbus", "use_ipv6", "debuglevel", "restore",
2438
2030
value = getattr(options, option)
2439
2031
if value is not None:
2440
2032
server_settings[option] = value
2442
2034
# Force all strings to be unicode
2443
2035
for option in server_settings.keys():
2444
if isinstance(server_settings[option], bytes):
2445
server_settings[option] = (server_settings[option]
2447
# Force all boolean options to be boolean
2448
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2449
"foreground", "zeroconf"):
2450
server_settings[option] = bool(server_settings[option])
2451
# Debug implies foreground
2452
if server_settings["debug"]:
2453
server_settings["foreground"] = True
2036
if type(server_settings[option]) is str:
2037
server_settings[option] = unicode(server_settings[option])
2454
2038
# Now we have our good server settings in "server_settings"
2456
2040
##################################################################
2458
if (not server_settings["zeroconf"]
2459
and not (server_settings["port"]
2460
or server_settings["socket"] != "")):
2461
parser.error("Needs port or socket to work without Zeroconf")
2463
2042
# For convenience
2464
2043
debug = server_settings["debug"]
2465
2044
debuglevel = server_settings["debuglevel"]
2467
2046
use_ipv6 = server_settings["use_ipv6"]
2468
2047
stored_state_path = os.path.join(server_settings["statedir"],
2469
2048
stored_state_file)
2470
foreground = server_settings["foreground"]
2471
zeroconf = server_settings["zeroconf"]
2474
initlogger(debug, logging.DEBUG)
2051
initlogger(logging.DEBUG)
2476
2053
if not debuglevel:
2479
2056
level = getattr(logging, debuglevel.upper())
2480
initlogger(debug, level)
2482
2059
if server_settings["servicename"] != "Mandos":
2483
syslogger.setFormatter(
2484
logging.Formatter('Mandos ({}) [%(process)d]:'
2485
' %(levelname)s: %(message)s'.format(
2486
server_settings["servicename"])))
2060
syslogger.setFormatter(logging.Formatter
2061
('Mandos (%s) [%%(process)d]:'
2062
' %%(levelname)s: %%(message)s'
2063
% server_settings["servicename"]))
2488
2065
# Parse config file with clients
2489
client_config = configparser.SafeConfigParser(Client
2066
client_defaults = { "timeout": "5m",
2067
"extended_timeout": "15m",
2069
"checker": "fping -q -- %%(host)s",
2071
"approval_delay": "0s",
2072
"approval_duration": "1s",
2074
client_config = configparser.SafeConfigParser(client_defaults)
2491
2075
client_config.read(os.path.join(server_settings["configdir"],
2492
2076
"clients.conf"))
2494
2078
global mandos_dbus_service
2495
2079
mandos_dbus_service = None
2498
if server_settings["socket"] != "":
2499
socketfd = server_settings["socket"]
2500
tcp_server = MandosServer(
2501
(server_settings["address"], server_settings["port"]),
2503
interface=(server_settings["interface"] or None),
2505
gnutls_priority=server_settings["priority"],
2509
pidfilename = "/run/mandos.pid"
2510
if not os.path.isdir("/run/."):
2511
pidfilename = "/var/run/mandos.pid"
2081
tcp_server = MandosServer((server_settings["address"],
2082
server_settings["port"]),
2084
interface=(server_settings["interface"]
2088
server_settings["priority"],
2091
pidfilename = "/var/run/mandos.pid"
2514
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2515
except IOError as e:
2516
logger.error("Could not open file %r", pidfilename,
2093
pidfile = open(pidfilename, "w")
2095
logger.error("Could not open file %r", pidfilename)
2519
for name in ("_mandos", "mandos", "nobody"):
2098
uid = pwd.getpwnam("_mandos").pw_uid
2099
gid = pwd.getpwnam("_mandos").pw_gid
2521
uid = pwd.getpwnam(name).pw_uid
2522
gid = pwd.getpwnam(name).pw_gid
2102
uid = pwd.getpwnam("mandos").pw_uid
2103
gid = pwd.getpwnam("mandos").pw_gid
2524
2104
except KeyError:
2106
uid = pwd.getpwnam("nobody").pw_uid
2107
gid = pwd.getpwnam("nobody").pw_gid
2532
2114
except OSError as error:
2533
if error.errno != errno.EPERM:
2115
if error[0] != errno.EPERM:
2537
2119
# Enable all possible GnuTLS debugging
2544
2126
def debug_gnutls(level, string):
2545
2127
logger.debug("GnuTLS: %s", string[:-1])
2547
gnutls.library.functions.gnutls_global_set_log_function(
2129
(gnutls.library.functions
2130
.gnutls_global_set_log_function(debug_gnutls))
2550
2132
# Redirect stdin so all checkers get /dev/null
2551
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2133
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2552
2134
os.dup2(null, sys.stdin.fileno())
2138
# No console logging
2139
logger.removeHandler(console)
2556
2141
# Need to fork before connecting to D-Bus
2558
2143
# Close all input and output, do double fork, etc.
2561
# multiprocessing will use threads, so before we use gobject we
2562
# need to inform gobject that threads will be used.
2563
gobject.threads_init()
2565
2146
global main_loop
2566
2147
# From the Avahi example code
2567
DBusGMainLoop(set_as_default=True)
2148
DBusGMainLoop(set_as_default=True )
2568
2149
main_loop = gobject.MainLoop()
2569
2150
bus = dbus.SystemBus()
2570
2151
# End of Avahi example code
2573
2154
bus_name = dbus.service.BusName("se.recompile.Mandos",
2576
old_bus_name = dbus.service.BusName(
2577
"se.bsnet.fukt.Mandos", bus,
2579
except dbus.exceptions.DBusException as e:
2580
logger.error("Disabling D-Bus:", exc_info=e)
2155
bus, do_not_queue=True)
2156
old_bus_name = (dbus.service.BusName
2157
("se.bsnet.fukt.Mandos", bus,
2159
except dbus.exceptions.NameExistsException as e:
2160
logger.error(unicode(e) + ", disabling D-Bus")
2581
2161
use_dbus = False
2582
2162
server_settings["use_dbus"] = False
2583
2163
tcp_server.use_dbus = False
2585
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2586
service = AvahiServiceToSyslog(
2587
name = server_settings["servicename"],
2588
servicetype = "_mandos._tcp",
2589
protocol = protocol,
2591
if server_settings["interface"]:
2592
service.interface = if_nametoindex(
2593
server_settings["interface"].encode("utf-8"))
2164
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2165
service = AvahiServiceToSyslog(name =
2166
server_settings["servicename"],
2167
servicetype = "_mandos._tcp",
2168
protocol = protocol, bus = bus)
2169
if server_settings["interface"]:
2170
service.interface = (if_nametoindex
2171
(str(server_settings["interface"])))
2595
2173
global multiprocessing_manager
2596
2174
multiprocessing_manager = multiprocessing.Manager()
2598
2176
client_class = Client
2600
client_class = functools.partial(ClientDBus, bus = bus)
2602
client_settings = Client.config_parser(client_config)
2178
client_class = functools.partial(ClientDBusTransitional,
2181
special_settings = {
2182
# Some settings need to be accessd by special methods;
2183
# booleans need .getboolean(), etc. Here is a list of them:
2184
"approved_by_default":
2186
client_config.getboolean(section, "approved_by_default"),
2189
client_config.getboolean(section, "enabled"),
2191
# Construct a new dict of client settings of this form:
2192
# { client_name: {setting_name: value, ...}, ...}
2193
# with exceptions for any special settings as defined above
2194
client_settings = dict((clientname,
2197
if setting not in special_settings
2198
else special_settings[setting]
2200
for setting, value in
2201
client_config.items(clientname)))
2202
for clientname in client_config.sections())
2603
2204
old_client_settings = {}
2606
# This is used to redirect stdout and stderr for checker processes
2608
wnull = open(os.devnull, "w") # A writable /dev/null
2609
# Only used if server is running in foreground but not in debug
2611
if debug or not foreground:
2614
2207
# Get client data and settings from last running state.
2615
2208
if server_settings["restore"]:
2617
2210
with open(stored_state_path, "rb") as stored_state:
2618
clients_data, old_client_settings = pickle.load(
2211
clients_data, old_client_settings = (pickle.load
2620
2213
os.remove(stored_state_path)
2621
2214
except IOError as e:
2622
if e.errno == errno.ENOENT:
2623
logger.warning("Could not load persistent state:"
2624
" {}".format(os.strerror(e.errno)))
2626
logger.critical("Could not load persistent state:",
2215
logger.warning("Could not load persistent state: {0}"
2217
if e.errno != errno.ENOENT:
2629
except EOFError as e:
2630
logger.warning("Could not load persistent state: "
2634
with PGPEngine() as pgp:
2635
for client_name, client in clients_data.items():
2636
# Skip removed clients
2637
if client_name not in client_settings:
2220
with Crypto() as crypt:
2221
for client in clients_data:
2222
client_name = client["name"]
2640
2224
# Decide which value to use after restoring saved state.
2641
2225
# We have three different values: Old config file,
2647
2231
# For each value in new config, check if it
2648
2232
# differs from the old config value (Except for
2649
2233
# the "secret" attribute)
2650
if (name != "secret"
2652
old_client_settings[client_name][name])):
2653
client[name] = value
2234
if (name != "secret" and
2235
value != old_client_settings[client_name]
2237
setattr(client, name, value)
2654
2238
except KeyError:
2657
2241
# Clients who has passed its expire date can still be
2658
# enabled if its last checker was successful. Clients
2659
# whose checker succeeded before we stored its state is
2660
# assumed to have successfully run all checkers during
2662
if client["enabled"]:
2663
if datetime.datetime.utcnow() >= client["expires"]:
2664
if not client["last_checked_ok"]:
2666
"disabling client {} - Client never "
2667
"performed a successful checker".format(
2669
client["enabled"] = False
2670
elif client["last_checker_status"] != 0:
2672
"disabling client {} - Client last"
2673
" checker failed with error code"
2676
client["last_checker_status"]))
2242
# enabled if its last checker was sucessful. Clients
2243
# whose checker failed before we stored its state is
2244
# assumed to have failed all checkers during downtime.
2245
if client["enabled"] and client["last_checked_ok"]:
2246
if ((datetime.datetime.utcnow()
2247
- client["last_checked_ok"])
2248
> client["interval"]):
2249
if client["last_checker_status"] != 0:
2677
2250
client["enabled"] = False
2679
client["expires"] = (
2680
datetime.datetime.utcnow()
2681
+ client["timeout"])
2682
logger.debug("Last checker succeeded,"
2683
" keeping {} enabled".format(
2252
client["expires"] = (datetime.datetime
2254
+ client["timeout"])
2256
client["changedstate"] = (multiprocessing_manager
2258
(multiprocessing_manager
2261
new_client = (ClientDBusTransitional.__new__
2262
(ClientDBusTransitional))
2263
tcp_server.clients[client_name] = new_client
2264
new_client.bus = bus
2265
for name, value in client.iteritems():
2266
setattr(new_client, name, value)
2267
client_object_name = unicode(client_name).translate(
2268
{ord("."): ord("_"),
2269
ord("-"): ord("_")})
2270
new_client.dbus_object_path = (dbus.ObjectPath
2272
+ client_object_name))
2273
DBusObjectWithProperties.__init__(new_client,
2278
tcp_server.clients[client_name] = (Client.__new__
2280
for name, value in client.iteritems():
2281
setattr(tcp_server.clients[client_name],
2686
client["secret"] = pgp.decrypt(
2687
client["encrypted_secret"],
2285
tcp_server.clients[client_name].secret = (
2286
crypt.decrypt(tcp_server.clients[client_name]
2288
client_settings[client_name]
2291
# If decryption fails, we use secret from new settings
2292
tcp_server.clients[client_name].secret = (
2688
2293
client_settings[client_name]["secret"])
2690
# If decryption fails, we use secret from new settings
2691
logger.debug("Failed to decrypt {} old secret".format(
2693
client["secret"] = (client_settings[client_name]
2696
# Add/remove clients based on new changes made to config
2697
for client_name in (set(old_client_settings)
2698
- set(client_settings)):
2699
del clients_data[client_name]
2700
for client_name in (set(client_settings)
2701
- set(old_client_settings)):
2702
clients_data[client_name] = client_settings[client_name]
2704
# Create all client objects
2705
for client_name, client in clients_data.items():
2706
tcp_server.clients[client_name] = client_class(
2709
server_settings = server_settings)
2295
# Create/remove clients based on new changes made to config
2296
for clientname in set(old_client_settings) - set(client_settings):
2297
del tcp_server.clients[clientname]
2298
for clientname in set(client_settings) - set(old_client_settings):
2299
tcp_server.clients[clientname] = (client_class(name
2711
2305
if not tcp_server.clients:
2712
2306
logger.warning("No clients defined")
2715
if pidfile is not None:
2719
print(pid, file=pidfile)
2721
logger.error("Could not write to file %r with PID %d",
2312
pidfile.write(str(pid) + "\n".encode("utf-8"))
2315
logger.error("Could not write to file %r with PID %d",
2318
# "pidfile" was never created
2724
2320
del pidfilename
2322
signal.signal(signal.SIGINT, signal.SIG_IGN)
2726
2324
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2727
2325
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2731
@alternate_dbus_interfaces(
2732
{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
2733
class MandosDBusService(DBusObjectWithProperties):
2328
class MandosDBusService(dbus.service.Object):
2734
2329
"""A D-Bus proxy object"""
2736
2330
def __init__(self):
2737
2331
dbus.service.Object.__init__(self, bus, "/")
2739
2332
_interface = "se.recompile.Mandos"
2741
@dbus_interface_annotations(_interface)
2744
"org.freedesktop.DBus.Property.EmitsChangedSignal":
2747
2334
@dbus.service.signal(_interface, signature="o")
2748
2335
def ClientAdded(self, objpath):