194
172
def password_encode(self, password):
195
173
# Passphrase can not be empty and can not contain newlines or
196
174
# NUL bytes. So we prefix it and hex encode it.
197
encoded = b"mandos" + binascii.hexlify(password)
198
if len(encoded) > 2048:
199
# GnuPG can't handle long passwords, so encode differently
200
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
201
.replace(b"\n", b"\\n")
202
.replace(b"\0", b"\\x00"))
175
return b"mandos" + binascii.hexlify(password)
205
177
def encrypt(self, data, password):
206
passphrase = self.password_encode(password)
207
with tempfile.NamedTemporaryFile(
208
dir=self.tempdir) as passfile:
209
passfile.write(passphrase)
211
proc = subprocess.Popen([self.gpg, '--symmetric',
215
stdin = subprocess.PIPE,
216
stdout = subprocess.PIPE,
217
stderr = subprocess.PIPE)
218
ciphertext, err = proc.communicate(input = data)
219
if proc.returncode != 0:
178
self.gnupg.passphrase = self.password_encode(password)
179
with open(os.devnull, "w") as devnull:
181
proc = self.gnupg.run(['--symmetric'],
182
create_fhs=['stdin', 'stdout'],
183
attach_fhs={'stderr': devnull})
184
with contextlib.closing(proc.handles['stdin']) as f:
186
with contextlib.closing(proc.handles['stdout']) as f:
187
ciphertext = f.read()
191
self.gnupg.passphrase = None
221
192
return ciphertext
223
194
def decrypt(self, data, password):
224
passphrase = self.password_encode(password)
225
with tempfile.NamedTemporaryFile(
226
dir = self.tempdir) as passfile:
227
passfile.write(passphrase)
229
proc = subprocess.Popen([self.gpg, '--decrypt',
233
stdin = subprocess.PIPE,
234
stdout = subprocess.PIPE,
235
stderr = subprocess.PIPE)
236
decrypted_plaintext, err = proc.communicate(input = data)
237
if proc.returncode != 0:
195
self.gnupg.passphrase = self.password_encode(password)
196
with open(os.devnull, "w") as devnull:
198
proc = self.gnupg.run(['--decrypt'],
199
create_fhs=['stdin', 'stdout'],
200
attach_fhs={'stderr': devnull})
201
with contextlib.closing(proc.handles['stdin']) as f:
203
with contextlib.closing(proc.handles['stdout']) as f:
204
decrypted_plaintext = f.read()
208
self.gnupg.passphrase = None
239
209
return decrypted_plaintext
242
213
class AvahiError(Exception):
243
214
def __init__(self, value, *args, **kwargs):
244
215
self.value = value
245
return super(AvahiError, self).__init__(value, *args,
216
super(AvahiError, self).__init__(value, *args, **kwargs)
217
def __unicode__(self):
218
return unicode(repr(self.value))
249
220
class AvahiServiceError(AvahiError):
253
223
class AvahiGroupError(AvahiError):
427
367
follow_name_owner_changes=True),
428
368
avahi.DBUS_INTERFACE_SERVER)
429
369
self.server.connect_to_signal("StateChanged",
430
self.server_state_changed)
370
self.server_state_changed)
431
371
self.server_state_changed(self.server.GetState())
434
373
class AvahiServiceToSyslog(AvahiService):
435
def rename(self, *args, **kwargs):
436
375
"""Add the new name to the syslog messages"""
437
ret = AvahiService.rename(self, *args, **kwargs)
438
syslogger.setFormatter(logging.Formatter(
439
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
376
ret = AvahiService.rename(self)
377
syslogger.setFormatter(logging.Formatter
378
('Mandos (%s) [%%(process)d]:'
379
' %%(levelname)s: %%(message)s'
443
# Pretend that we have a GnuTLS module
444
class GnuTLS(object):
445
"""This isn't so much a class as it is a module-like namespace.
446
It is instantiated once, and simulates having a GnuTLS module."""
448
_library = ctypes.cdll.LoadLibrary(
449
ctypes.util.find_library("gnutls"))
450
_need_version = "3.3.0"
452
# Need to use class name "GnuTLS" here, since this method is
453
# called before the assignment to the "gnutls" global variable
455
if GnuTLS.check_version(self._need_version) is None:
456
raise GnuTLS.Error("Needs GnuTLS {} or later"
457
.format(self._need_version))
459
# Unless otherwise indicated, the constants and types below are
460
# all from the gnutls/gnutls.h C header file.
470
E_NO_CERTIFICATE_FOUND = -49
471
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
474
class session_int(ctypes.Structure):
476
session_t = ctypes.POINTER(session_int)
477
class certificate_credentials_st(ctypes.Structure):
479
certificate_credentials_t = ctypes.POINTER(
480
certificate_credentials_st)
481
certificate_type_t = ctypes.c_int
482
class datum_t(ctypes.Structure):
483
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
484
('size', ctypes.c_uint)]
485
class openpgp_crt_int(ctypes.Structure):
487
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
488
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
489
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
490
credentials_type_t = ctypes.c_int
491
transport_ptr_t = ctypes.c_void_p
492
close_request_t = ctypes.c_int
495
class Error(Exception):
496
# We need to use the class name "GnuTLS" here, since this
497
# exception might be raised from within GnuTLS.__init__,
498
# which is called before the assignment to the "gnutls"
499
# global variable has happened.
500
def __init__(self, message = None, code = None, args=()):
501
# Default usage is by a message string, but if a return
502
# code is passed, convert it to a string with
505
if message is None and code is not None:
506
message = GnuTLS.strerror(code)
507
return super(GnuTLS.Error, self).__init__(
510
class CertificateSecurityError(Error):
514
class Credentials(object):
516
self._c_object = gnutls.certificate_credentials_t()
517
gnutls.certificate_allocate_credentials(
518
ctypes.byref(self._c_object))
519
self.type = gnutls.CRD_CERTIFICATE
522
gnutls.certificate_free_credentials(self._c_object)
524
class ClientSession(object):
525
def __init__(self, socket, credentials = None):
526
self._c_object = gnutls.session_t()
527
gnutls.init(ctypes.byref(self._c_object), gnutls.CLIENT)
528
gnutls.set_default_priority(self._c_object)
529
gnutls.transport_set_ptr(self._c_object, socket.fileno())
530
gnutls.handshake_set_private_extensions(self._c_object,
533
if credentials is None:
534
credentials = gnutls.Credentials()
535
gnutls.credentials_set(self._c_object, credentials.type,
536
ctypes.cast(credentials._c_object,
538
self.credentials = credentials
541
gnutls.deinit(self._c_object)
544
return gnutls.handshake(self._c_object)
546
def send(self, data):
550
data_len -= gnutls.record_send(self._c_object,
555
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
557
# Error handling functions
558
def _error_code(result):
559
"""A function to raise exceptions on errors, suitable
560
for the 'restype' attribute on ctypes functions"""
563
if result == gnutls.E_NO_CERTIFICATE_FOUND:
564
raise gnutls.CertificateSecurityError(code = result)
565
raise gnutls.Error(code = result)
567
def _retry_on_error(result, func, arguments):
568
"""A function to retry on some errors, suitable
569
for the 'errcheck' attribute on ctypes functions"""
571
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
572
return _error_code(result)
573
result = func(*arguments)
576
# Unless otherwise indicated, the function declarations below are
577
# all from the gnutls/gnutls.h C header file.
580
priority_set_direct = _library.gnutls_priority_set_direct
581
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
582
ctypes.POINTER(ctypes.c_char_p)]
583
priority_set_direct.restype = _error_code
585
init = _library.gnutls_init
586
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
587
init.restype = _error_code
589
set_default_priority = _library.gnutls_set_default_priority
590
set_default_priority.argtypes = [session_t]
591
set_default_priority.restype = _error_code
593
record_send = _library.gnutls_record_send
594
record_send.argtypes = [session_t, ctypes.c_void_p,
596
record_send.restype = ctypes.c_ssize_t
597
record_send.errcheck = _retry_on_error
599
certificate_allocate_credentials = (
600
_library.gnutls_certificate_allocate_credentials)
601
certificate_allocate_credentials.argtypes = [
602
ctypes.POINTER(certificate_credentials_t)]
603
certificate_allocate_credentials.restype = _error_code
605
certificate_free_credentials = (
606
_library.gnutls_certificate_free_credentials)
607
certificate_free_credentials.argtypes = [certificate_credentials_t]
608
certificate_free_credentials.restype = None
610
handshake_set_private_extensions = (
611
_library.gnutls_handshake_set_private_extensions)
612
handshake_set_private_extensions.argtypes = [session_t,
614
handshake_set_private_extensions.restype = None
616
credentials_set = _library.gnutls_credentials_set
617
credentials_set.argtypes = [session_t, credentials_type_t,
619
credentials_set.restype = _error_code
621
strerror = _library.gnutls_strerror
622
strerror.argtypes = [ctypes.c_int]
623
strerror.restype = ctypes.c_char_p
625
certificate_type_get = _library.gnutls_certificate_type_get
626
certificate_type_get.argtypes = [session_t]
627
certificate_type_get.restype = _error_code
629
certificate_get_peers = _library.gnutls_certificate_get_peers
630
certificate_get_peers.argtypes = [session_t,
631
ctypes.POINTER(ctypes.c_uint)]
632
certificate_get_peers.restype = ctypes.POINTER(datum_t)
634
global_set_log_level = _library.gnutls_global_set_log_level
635
global_set_log_level.argtypes = [ctypes.c_int]
636
global_set_log_level.restype = None
638
global_set_log_function = _library.gnutls_global_set_log_function
639
global_set_log_function.argtypes = [log_func]
640
global_set_log_function.restype = None
642
deinit = _library.gnutls_deinit
643
deinit.argtypes = [session_t]
644
deinit.restype = None
646
handshake = _library.gnutls_handshake
647
handshake.argtypes = [session_t]
648
handshake.restype = _error_code
649
handshake.errcheck = _retry_on_error
651
transport_set_ptr = _library.gnutls_transport_set_ptr
652
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
653
transport_set_ptr.restype = None
655
bye = _library.gnutls_bye
656
bye.argtypes = [session_t, close_request_t]
657
bye.restype = _error_code
658
bye.errcheck = _retry_on_error
660
check_version = _library.gnutls_check_version
661
check_version.argtypes = [ctypes.c_char_p]
662
check_version.restype = ctypes.c_char_p
664
# All the function declarations below are from gnutls/openpgp.h
666
openpgp_crt_init = _library.gnutls_openpgp_crt_init
667
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
668
openpgp_crt_init.restype = _error_code
670
openpgp_crt_import = _library.gnutls_openpgp_crt_import
671
openpgp_crt_import.argtypes = [openpgp_crt_t,
672
ctypes.POINTER(datum_t),
674
openpgp_crt_import.restype = _error_code
676
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
677
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
678
ctypes.POINTER(ctypes.c_uint)]
679
openpgp_crt_verify_self.restype = _error_code
681
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
682
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
683
openpgp_crt_deinit.restype = None
685
openpgp_crt_get_fingerprint = (
686
_library.gnutls_openpgp_crt_get_fingerprint)
687
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
691
openpgp_crt_get_fingerprint.restype = _error_code
693
# Remove non-public functions
694
del _error_code, _retry_on_error
695
# Create the global "gnutls" object, simulating a module
698
def call_pipe(connection, # : multiprocessing.Connection
699
func, *args, **kwargs):
700
"""This function is meant to be called by multiprocessing.Process
702
This function runs func(*args, **kwargs), and writes the resulting
703
return value on the provided multiprocessing.Connection.
705
connection.send(func(*args, **kwargs))
383
def timedelta_to_milliseconds(td):
384
"Convert a datetime.timedelta() to milliseconds"
385
return ((td.days * 24 * 60 * 60 * 1000)
386
+ (td.seconds * 1000)
387
+ (td.microseconds // 1000))
708
389
class Client(object):
709
390
"""A representation of a client host served by this server.
748
427
runtime_expansions: Allowed attributes for runtime expansion.
749
428
expires: datetime.datetime(); time (UTC) when a client will be
750
429
disabled, or None
751
server_settings: The server_settings dict from main()
754
432
runtime_expansions = ("approval_delay", "approval_duration",
755
"created", "enabled", "expires",
756
"fingerprint", "host", "interval",
757
"last_approval_request", "last_checked_ok",
433
"created", "enabled", "fingerprint",
434
"host", "interval", "last_checked_ok",
758
435
"last_enabled", "name", "timeout")
761
"extended_timeout": "PT15M",
763
"checker": "fping -q -- %%(host)s",
765
"approval_delay": "PT0S",
766
"approval_duration": "PT1S",
767
"approved_by_default": "True",
436
client_defaults = { "timeout": "5m",
437
"extended_timeout": "15m",
439
"checker": "fping -q -- %%(host)s",
441
"approval_delay": "0s",
442
"approval_duration": "1s",
443
"approved_by_default": "True",
447
def timeout_milliseconds(self):
448
"Return the 'timeout' attribute in milliseconds"
449
return timedelta_to_milliseconds(self.timeout)
451
def extended_timeout_milliseconds(self):
452
"Return the 'extended_timeout' attribute in milliseconds"
453
return timedelta_to_milliseconds(self.extended_timeout)
455
def interval_milliseconds(self):
456
"Return the 'interval' attribute in milliseconds"
457
return timedelta_to_milliseconds(self.interval)
459
def approval_delay_milliseconds(self):
460
return timedelta_to_milliseconds(self.approval_delay)
772
463
def config_parser(config):
773
464
"""Construct a new dict of client settings of this form:
904
599
def init_checker(self):
905
600
# Schedule a new checker to be started an 'interval' from now,
906
601
# and every interval from then on.
907
if self.checker_initiator_tag is not None:
908
GObject.source_remove(self.checker_initiator_tag)
909
self.checker_initiator_tag = GObject.timeout_add(
910
int(self.interval.total_seconds() * 1000),
602
self.checker_initiator_tag = (gobject.timeout_add
603
(self.interval_milliseconds(),
912
605
# Schedule a disable() when 'timeout' has passed
913
if self.disable_initiator_tag is not None:
914
GObject.source_remove(self.disable_initiator_tag)
915
self.disable_initiator_tag = GObject.timeout_add(
916
int(self.timeout.total_seconds() * 1000), self.disable)
606
self.disable_initiator_tag = (gobject.timeout_add
607
(self.timeout_milliseconds(),
917
609
# Also start a new checker *right now*.
918
610
self.start_checker()
920
def checker_callback(self, source, condition, connection,
612
def checker_callback(self, pid, condition, command):
922
613
"""The checker has completed, so take appropriate actions."""
923
614
self.checker_callback_tag = None
924
615
self.checker = None
925
# Read return code from connection (see call_pipe)
926
returncode = connection.recv()
930
self.last_checker_status = returncode
931
self.last_checker_signal = None
616
if os.WIFEXITED(condition):
617
self.last_checker_status = os.WEXITSTATUS(condition)
932
618
if self.last_checker_status == 0:
933
619
logger.info("Checker for %(name)s succeeded",
935
621
self.checked_ok()
937
logger.info("Checker for %(name)s failed", vars(self))
623
logger.info("Checker for %(name)s failed",
939
626
self.last_checker_status = -1
940
self.last_checker_signal = -returncode
941
627
logger.warning("Checker for %(name)s crashed?",
945
630
def checked_ok(self):
946
631
"""Assert that the client has been seen, alive and well."""
947
632
self.last_checked_ok = datetime.datetime.utcnow()
948
633
self.last_checker_status = 0
949
self.last_checker_signal = None
950
634
self.bump_timeout()
952
636
def bump_timeout(self, timeout=None):
970
654
If a checker already exists, leave it running and do
972
656
# The reason for not killing a running checker is that if we
973
# did that, and if a checker (for some reason) started running
974
# slowly and taking more than 'interval' time, then the client
975
# would inevitably timeout, since no checker would get a
976
# chance to run to completion. If we instead leave running
657
# did that, then if a checker (for some reason) started
658
# running slowly and taking more than 'interval' time, the
659
# client would inevitably timeout, since no checker would get
660
# a chance to run to completion. If we instead leave running
977
661
# checkers alone, the checker would have to take more time
978
662
# than 'timeout' for the client to be disabled, which is as it
981
if self.checker is not None and not self.checker.is_alive():
982
logger.warning("Checker was not alive; joining")
665
# If a checker exists, make sure it is not a zombie
667
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
668
except (AttributeError, OSError) as error:
669
if (isinstance(error, OSError)
670
and error.errno != errno.ECHILD):
674
logger.warning("Checker was a zombie")
675
gobject.source_remove(self.checker_callback_tag)
676
self.checker_callback(pid, status,
677
self.current_checker_command)
985
678
# Start a new checker if needed
986
679
if self.checker is None:
987
# Escape attributes for the shell
989
attr: re.escape(str(getattr(self, attr)))
990
for attr in self.runtime_expansions }
992
command = self.checker_command % escaped_attrs
993
except TypeError as error:
994
logger.error('Could not format string "%s"',
995
self.checker_command,
997
return True # Try again later
681
# In case checker_command has exactly one % operator
682
command = self.checker_command % self.host
684
# Escape attributes for the shell
685
escaped_attrs = dict(
687
re.escape(unicode(str(getattr(self, attr, "")),
691
self.runtime_expansions)
694
command = self.checker_command % escaped_attrs
695
except TypeError as error:
696
logger.error('Could not format string "%s":'
697
' %s', self.checker_command, error)
698
return True # Try again later
998
699
self.current_checker_command = command
999
logger.info("Starting checker %r for %s", command,
1001
# We don't need to redirect stdout and stderr, since
1002
# in normal mode, that is already done by daemon(),
1003
# and in debug mode we don't want to. (Stdin is
1004
# always replaced by /dev/null.)
1005
# The exception is when not debugging but nevertheless
1006
# running in the foreground; use the previously
1008
popen_args = { "close_fds": True,
1011
if (not self.server_settings["debug"]
1012
and self.server_settings["foreground"]):
1013
popen_args.update({"stdout": wnull,
1015
pipe = multiprocessing.Pipe(duplex = False)
1016
self.checker = multiprocessing.Process(
1018
args = (pipe[1], subprocess.call, command),
1019
kwargs = popen_args)
1020
self.checker.start()
1021
self.checker_callback_tag = GObject.io_add_watch(
1022
pipe[0].fileno(), GObject.IO_IN,
1023
self.checker_callback, pipe[0], command)
1024
# Re-run this periodically if run by GObject.timeout_add
701
logger.info("Starting checker %r for %s",
703
# We don't need to redirect stdout and stderr, since
704
# in normal mode, that is already done by daemon(),
705
# and in debug mode we don't want to. (Stdin is
706
# always replaced by /dev/null.)
707
self.checker = subprocess.Popen(command,
710
self.checker_callback_tag = (gobject.child_watch_add
712
self.checker_callback,
714
# The checker may have completed before the gobject
715
# watch was added. Check for this.
716
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
718
gobject.source_remove(self.checker_callback_tag)
719
self.checker_callback(pid, status, command)
720
except OSError as error:
721
logger.error("Failed to start subprocess: %s",
723
# Re-run this periodically if run by gobject.timeout_add
1027
726
def stop_checker(self):
1028
727
"""Force the checker process, if any, to stop."""
1029
728
if self.checker_callback_tag:
1030
GObject.source_remove(self.checker_callback_tag)
729
gobject.source_remove(self.checker_callback_tag)
1031
730
self.checker_callback_tag = None
1032
731
if getattr(self, "checker", None) is None:
1034
733
logger.debug("Stopping checker for %(name)s", vars(self))
1035
self.checker.terminate()
735
os.kill(self.checker.pid, signal.SIGTERM)
737
#if self.checker.poll() is None:
738
# os.kill(self.checker.pid, signal.SIGKILL)
739
except OSError as error:
740
if error.errno != errno.ESRCH: # No such process
1036
742
self.checker = None
1039
def dbus_service_property(dbus_interface,
745
def dbus_service_property(dbus_interface, signature="v",
746
access="readwrite", byte_arrays=False):
1043
747
"""Decorators for marking methods of a DBusObjectWithProperties to
1044
748
become properties on the D-Bus.
1145
843
If called like _is_dbus_thing("method") it returns a function
1146
844
suitable for use as predicate to inspect.getmembers().
1148
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
846
return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),
1151
849
def _get_all_dbus_things(self, thing):
1152
850
"""Returns a generator of (name, attribute) pairs
1154
return ((getattr(athing.__get__(self), "_dbus_name", name),
852
return ((getattr(athing.__get__(self), "_dbus_name",
1155
854
athing.__get__(self))
1156
855
for cls in self.__class__.__mro__
1157
856
for name, athing in
1158
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1160
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1161
out_signature = "s",
1162
path_keyword = 'object_path',
1163
connection_keyword = 'connection')
1164
def Introspect(self, object_path, connection):
1165
"""Overloading of standard D-Bus method.
1167
Inserts annotation tags on methods and signals.
1169
xmlstring = dbus.service.Object.Introspect(self, object_path,
1172
document = xml.dom.minidom.parseString(xmlstring)
1174
for if_tag in document.getElementsByTagName("interface"):
1175
# Add annotation tags
1176
for typ in ("method", "signal"):
1177
for tag in if_tag.getElementsByTagName(typ):
1179
for name, prop in (self.
1180
_get_all_dbus_things(typ)):
1181
if (name == tag.getAttribute("name")
1182
and prop._dbus_interface
1183
== if_tag.getAttribute("name")):
1184
annots.update(getattr(
1185
prop, "_dbus_annotations", {}))
1186
for name, value in annots.items():
1187
ann_tag = document.createElement(
1189
ann_tag.setAttribute("name", name)
1190
ann_tag.setAttribute("value", value)
1191
tag.appendChild(ann_tag)
1192
# Add interface annotation tags
1193
for annotation, value in dict(
1194
itertools.chain.from_iterable(
1195
annotations().items()
1196
for name, annotations
1197
in self._get_all_dbus_things("interface")
1198
if name == if_tag.getAttribute("name")
1200
ann_tag = document.createElement("annotation")
1201
ann_tag.setAttribute("name", annotation)
1202
ann_tag.setAttribute("value", value)
1203
if_tag.appendChild(ann_tag)
1204
# Fix argument name for the Introspect method itself
1205
if (if_tag.getAttribute("name")
1206
== dbus.INTROSPECTABLE_IFACE):
1207
for cn in if_tag.getElementsByTagName("method"):
1208
if cn.getAttribute("name") == "Introspect":
1209
for arg in cn.getElementsByTagName("arg"):
1210
if (arg.getAttribute("direction")
1212
arg.setAttribute("name",
1214
xmlstring = document.toxml("utf-8")
1216
except (AttributeError, xml.dom.DOMException,
1217
xml.parsers.expat.ExpatError) as error:
1218
logger.error("Failed to override Introspection method",
1223
class DBusObjectWithProperties(DBusObjectWithAnnotations):
1224
"""A D-Bus object with properties.
1226
Classes inheriting from this can use the dbus_service_property
1227
decorator to expose methods as D-Bus properties. It exposes the
1228
standard Get(), Set(), and GetAll() methods on the D-Bus.
857
inspect.getmembers(cls,
858
self._is_dbus_thing(thing)))
1231
860
def _get_dbus_property(self, interface_name, property_name):
1232
861
"""Returns a bound method if one exists which is a D-Bus
1233
862
property with the specified name and interface.
1235
for cls in self.__class__.__mro__:
1236
for name, value in inspect.getmembers(
1237
cls, self._is_dbus_thing("property")):
864
for cls in self.__class__.__mro__:
865
for name, value in (inspect.getmembers
867
self._is_dbus_thing("property"))):
1238
868
if (value._dbus_name == property_name
1239
869
and value._dbus_interface == interface_name):
1240
870
return value.__get__(self)
1242
872
# No such property
1243
raise DBusPropertyNotFound("{}:{}.{}".format(
1244
self.dbus_object_path, interface_name, property_name))
1247
def _get_all_interface_names(cls):
1248
"""Get a sequence of all interfaces supported by an object"""
1249
return (name for name in set(getattr(getattr(x, attr),
1250
"_dbus_interface", None)
1251
for x in (inspect.getmro(cls))
1253
if name is not None)
1255
@dbus.service.method(dbus.PROPERTIES_IFACE,
873
raise DBusPropertyNotFound(self.dbus_object_path + ":"
874
+ interface_name + "."
877
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1257
878
out_signature="v")
1258
879
def Get(self, interface_name, property_name):
1259
880
"""Standard D-Bus property Get() method, see D-Bus standard.
1384
1006
except (AttributeError, xml.dom.DOMException,
1385
1007
xml.parsers.expat.ExpatError) as error:
1386
1008
logger.error("Failed to override Introspection method",
1391
dbus.OBJECT_MANAGER_IFACE
1392
except AttributeError:
1393
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1395
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1396
"""A D-Bus object with an ObjectManager.
1398
Classes inheriting from this exposes the standard
1399
GetManagedObjects call and the InterfacesAdded and
1400
InterfacesRemoved signals on the standard
1401
"org.freedesktop.DBus.ObjectManager" interface.
1403
Note: No signals are sent automatically; they must be sent
1406
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1407
out_signature = "a{oa{sa{sv}}}")
1408
def GetManagedObjects(self):
1409
"""This function must be overridden"""
1410
raise NotImplementedError()
1412
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1413
signature = "oa{sa{sv}}")
1414
def InterfacesAdded(self, object_path, interfaces_and_properties):
1417
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature = "oas")
1418
def InterfacesRemoved(self, object_path, interfaces):
1421
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1422
out_signature = "s",
1423
path_keyword = 'object_path',
1424
connection_keyword = 'connection')
1425
def Introspect(self, object_path, connection):
1426
"""Overloading of standard D-Bus method.
1428
Override return argument name of GetManagedObjects to be
1429
"objpath_interfaces_and_properties"
1431
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1435
document = xml.dom.minidom.parseString(xmlstring)
1437
for if_tag in document.getElementsByTagName("interface"):
1438
# Fix argument name for the GetManagedObjects method
1439
if (if_tag.getAttribute("name")
1440
== dbus.OBJECT_MANAGER_IFACE):
1441
for cn in if_tag.getElementsByTagName("method"):
1442
if (cn.getAttribute("name")
1443
== "GetManagedObjects"):
1444
for arg in cn.getElementsByTagName("arg"):
1445
if (arg.getAttribute("direction")
1449
"objpath_interfaces"
1451
xmlstring = document.toxml("utf-8")
1453
except (AttributeError, xml.dom.DOMException,
1454
xml.parsers.expat.ExpatError) as error:
1455
logger.error("Failed to override Introspection method",
1459
def datetime_to_dbus(dt, variant_level=0):
1013
def datetime_to_dbus (dt, variant_level=0):
1460
1014
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1462
1016
return dbus.String("", variant_level = variant_level)
1463
return dbus.String(dt.isoformat(), variant_level=variant_level)
1466
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1467
"""A class decorator; applied to a subclass of
1468
dbus.service.Object, it will add alternate D-Bus attributes with
1469
interface names according to the "alt_interface_names" mapping.
1472
@alternate_dbus_interfaces({"org.example.Interface":
1473
"net.example.AlternateInterface"})
1474
class SampleDBusObject(dbus.service.Object):
1475
@dbus.service.method("org.example.Interface")
1476
def SampleDBusMethod():
1479
The above "SampleDBusMethod" on "SampleDBusObject" will be
1480
reachable via two interfaces: "org.example.Interface" and
1481
"net.example.AlternateInterface", the latter of which will have
1482
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1483
"true", unless "deprecate" is passed with a False value.
1485
This works for methods and signals, and also for D-Bus properties
1486
(from DBusObjectWithProperties) and interfaces (from the
1487
dbus_interface_annotations decorator).
1017
return dbus.String(dt.isoformat(),
1018
variant_level=variant_level)
1021
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
1023
"""Applied to an empty subclass of a D-Bus object, this metaclass
1024
will add additional D-Bus attributes matching a certain pattern.
1491
for orig_interface_name, alt_interface_name in (
1492
alt_interface_names.items()):
1494
interface_names = set()
1495
# Go though all attributes of the class
1496
for attrname, attribute in inspect.getmembers(cls):
1026
def __new__(mcs, name, bases, attr):
1027
# Go through all the base classes which could have D-Bus
1028
# methods, signals, or properties in them
1029
old_interface_names = []
1030
for base in (b for b in bases
1031
if issubclass(b, dbus.service.Object)):
1032
# Go though all attributes of the base class
1033
for attrname, attribute in inspect.getmembers(base):
1497
1034
# Ignore non-D-Bus attributes, and D-Bus attributes
1498
1035
# with the wrong interface name
1499
1036
if (not hasattr(attribute, "_dbus_interface")
1500
or not attribute._dbus_interface.startswith(
1501
orig_interface_name)):
1037
or not attribute._dbus_interface
1038
.startswith("se.recompile.Mandos")):
1503
1040
# Create an alternate D-Bus interface name based on
1504
1041
# the current name
1505
alt_interface = attribute._dbus_interface.replace(
1506
orig_interface_name, alt_interface_name)
1507
interface_names.add(alt_interface)
1042
alt_interface = (attribute._dbus_interface
1043
.replace("se.recompile.Mandos",
1044
"se.bsnet.fukt.Mandos"))
1045
if alt_interface != attribute._dbus_interface:
1046
old_interface_names.append(alt_interface)
1508
1047
# Is this a D-Bus signal?
1509
1048
if getattr(attribute, "_dbus_is_signal", False):
1510
if sys.version_info.major == 2:
1511
# Extract the original non-method undecorated
1512
# function by black magic
1513
nonmethod_func = (dict(
1049
# Extract the original non-method function by
1051
nonmethod_func = (dict(
1514
1052
zip(attribute.func_code.co_freevars,
1515
attribute.__closure__))
1516
["func"].cell_contents)
1518
nonmethod_func = attribute
1053
attribute.__closure__))["func"]
1519
1055
# Create a new, but exactly alike, function
1520
1056
# object, and decorate it to be a new D-Bus signal
1521
1057
# with the alternate D-Bus interface name
1522
if sys.version_info.major == 2:
1523
new_function = types.FunctionType(
1524
nonmethod_func.func_code,
1525
nonmethod_func.func_globals,
1526
nonmethod_func.func_name,
1527
nonmethod_func.func_defaults,
1528
nonmethod_func.func_closure)
1530
new_function = types.FunctionType(
1531
nonmethod_func.__code__,
1532
nonmethod_func.__globals__,
1533
nonmethod_func.__name__,
1534
nonmethod_func.__defaults__,
1535
nonmethod_func.__closure__)
1536
new_function = (dbus.service.signal(
1538
attribute._dbus_signature)(new_function))
1058
new_function = (dbus.service.signal
1060
attribute._dbus_signature)
1061
(types.FunctionType(
1062
nonmethod_func.func_code,
1063
nonmethod_func.func_globals,
1064
nonmethod_func.func_name,
1065
nonmethod_func.func_defaults,
1066
nonmethod_func.func_closure)))
1539
1067
# Copy annotations, if any
1541
new_function._dbus_annotations = dict(
1542
attribute._dbus_annotations)
1069
new_function._dbus_annotations = (
1070
dict(attribute._dbus_annotations))
1543
1071
except AttributeError:
1545
1073
# Define a creator of a function to call both the
1546
# original and alternate functions, so both the
1547
# original and alternate signals gets sent when
1548
# the function is called
1074
# old and new functions, so both the old and new
1075
# signals gets sent when the function is called
1549
1076
def fixscope(func1, func2):
1550
1077
"""This function is a scope container to pass
1551
1078
func1 and func2 to the "call_both" function
1552
1079
outside of its arguments"""
1554
@functools.wraps(func2)
1555
1080
def call_both(*args, **kwargs):
1556
1081
"""This function will emit two D-Bus
1557
1082
signals by calling func1 and func2"""
1558
1083
func1(*args, **kwargs)
1559
1084
func2(*args, **kwargs)
1560
# Make wrapper function look like a D-Bus signal
1561
for name, attr in inspect.getmembers(func2):
1562
if name.startswith("_dbus_"):
1563
setattr(call_both, name, attr)
1565
1085
return call_both
1566
1086
# Create the "call_both" function and add it to
1568
attr[attrname] = fixscope(attribute, new_function)
1088
attr[attrname] = fixscope(attribute,
1569
1090
# Is this a D-Bus method?
1570
1091
elif getattr(attribute, "_dbus_is_method", False):
1571
1092
# Create a new, but exactly alike, function
1572
1093
# object. Decorate it to be a new D-Bus method
1573
1094
# with the alternate D-Bus interface name. Add it
1574
1095
# to the class.
1576
dbus.service.method(
1578
attribute._dbus_in_signature,
1579
attribute._dbus_out_signature)
1580
(types.FunctionType(attribute.func_code,
1581
attribute.func_globals,
1582
attribute.func_name,
1583
attribute.func_defaults,
1584
attribute.func_closure)))
1096
attr[attrname] = (dbus.service.method
1098
attribute._dbus_in_signature,
1099
attribute._dbus_out_signature)
1101
(attribute.func_code,
1102
attribute.func_globals,
1103
attribute.func_name,
1104
attribute.func_defaults,
1105
attribute.func_closure)))
1585
1106
# Copy annotations, if any
1587
attr[attrname]._dbus_annotations = dict(
1588
attribute._dbus_annotations)
1108
attr[attrname]._dbus_annotations = (
1109
dict(attribute._dbus_annotations))
1589
1110
except AttributeError:
1591
1112
# Is this a D-Bus property?
1769
1267
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1770
1268
Client.__del__(self, *args, **kwargs)
1772
def checker_callback(self, source, condition,
1773
connection, command, *args, **kwargs):
1774
ret = Client.checker_callback(self, source, condition,
1775
connection, command, *args,
1777
exitstatus = self.last_checker_status
1270
def checker_callback(self, pid, condition, command,
1272
self.checker_callback_tag = None
1274
if os.WIFEXITED(condition):
1275
exitstatus = os.WEXITSTATUS(condition)
1779
1276
# Emit D-Bus signal
1780
1277
self.CheckerCompleted(dbus.Int16(exitstatus),
1781
# This is specific to GNU libC
1782
dbus.Int64(exitstatus << 8),
1278
dbus.Int64(condition),
1783
1279
dbus.String(command))
1785
1281
# Emit D-Bus signal
1786
1282
self.CheckerCompleted(dbus.Int16(-1),
1788
# This is specific to GNU libC
1790
| self.last_checker_signal),
1283
dbus.Int64(condition),
1791
1284
dbus.String(command))
1286
return Client.checker_callback(self, pid, condition, command,
1794
1289
def start_checker(self, *args, **kwargs):
1795
old_checker_pid = getattr(self.checker, "pid", None)
1290
old_checker = self.checker
1291
if self.checker is not None:
1292
old_checker_pid = self.checker.pid
1294
old_checker_pid = None
1796
1295
r = Client.start_checker(self, *args, **kwargs)
1797
1296
# Only if new checker process was started
1798
1297
if (self.checker is not None
1913
1414
self.approved_by_default = bool(value)
1915
1416
# ApprovalDelay - property
1916
@dbus_service_property(_interface,
1417
@dbus_service_property(_interface, signature="t",
1918
1418
access="readwrite")
1919
1419
def ApprovalDelay_dbus_property(self, value=None):
1920
1420
if value is None: # get
1921
return dbus.UInt64(self.approval_delay.total_seconds()
1421
return dbus.UInt64(self.approval_delay_milliseconds())
1923
1422
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1925
1424
# ApprovalDuration - property
1926
@dbus_service_property(_interface,
1425
@dbus_service_property(_interface, signature="t",
1928
1426
access="readwrite")
1929
1427
def ApprovalDuration_dbus_property(self, value=None):
1930
1428
if value is None: # get
1931
return dbus.UInt64(self.approval_duration.total_seconds()
1429
return dbus.UInt64(timedelta_to_milliseconds(
1430
self.approval_duration))
1933
1431
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1935
1433
# Name - property
1937
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1938
1434
@dbus_service_property(_interface, signature="s", access="read")
1939
1435
def Name_dbus_property(self):
1940
1436
return dbus.String(self.name)
1942
1438
# Fingerprint - property
1944
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1945
1439
@dbus_service_property(_interface, signature="s", access="read")
1946
1440
def Fingerprint_dbus_property(self):
1947
1441
return dbus.String(self.fingerprint)
1949
1443
# Host - property
1950
@dbus_service_property(_interface,
1444
@dbus_service_property(_interface, signature="s",
1952
1445
access="readwrite")
1953
1446
def Host_dbus_property(self, value=None):
1954
1447
if value is None: # get
1955
1448
return dbus.String(self.host)
1956
self.host = str(value)
1449
self.host = unicode(value)
1958
1451
# Created - property
1960
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1961
1452
@dbus_service_property(_interface, signature="s", access="read")
1962
1453
def Created_dbus_property(self):
1963
1454
return datetime_to_dbus(self.created)
2005
1495
return datetime_to_dbus(self.last_approval_request)
2007
1497
# Timeout - property
2008
@dbus_service_property(_interface,
1498
@dbus_service_property(_interface, signature="t",
2010
1499
access="readwrite")
2011
1500
def Timeout_dbus_property(self, value=None):
2012
1501
if value is None: # get
2013
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2014
old_timeout = self.timeout
1502
return dbus.UInt64(self.timeout_milliseconds())
2015
1503
self.timeout = datetime.timedelta(0, 0, 0, value)
2016
# Reschedule disabling
1504
# Reschedule timeout
2017
1505
if self.enabled:
2018
1506
now = datetime.datetime.utcnow()
2019
self.expires += self.timeout - old_timeout
2020
if self.expires <= now:
1507
time_to_die = timedelta_to_milliseconds(
1508
(self.last_checked_ok + self.timeout) - now)
1509
if time_to_die <= 0:
2021
1510
# The timeout has passed
1513
self.expires = (now +
1514
datetime.timedelta(milliseconds =
2024
1516
if (getattr(self, "disable_initiator_tag", None)
2027
GObject.source_remove(self.disable_initiator_tag)
2028
self.disable_initiator_tag = GObject.timeout_add(
2029
int((self.expires - now).total_seconds() * 1000),
1519
gobject.source_remove(self.disable_initiator_tag)
1520
self.disable_initiator_tag = (gobject.timeout_add
2032
1524
# ExtendedTimeout - property
2033
@dbus_service_property(_interface,
1525
@dbus_service_property(_interface, signature="t",
2035
1526
access="readwrite")
2036
1527
def ExtendedTimeout_dbus_property(self, value=None):
2037
1528
if value is None: # get
2038
return dbus.UInt64(self.extended_timeout.total_seconds()
1529
return dbus.UInt64(self.extended_timeout_milliseconds())
2040
1530
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2042
1532
# Interval - property
2043
@dbus_service_property(_interface,
1533
@dbus_service_property(_interface, signature="t",
2045
1534
access="readwrite")
2046
1535
def Interval_dbus_property(self, value=None):
2047
1536
if value is None: # get
2048
return dbus.UInt64(self.interval.total_seconds() * 1000)
1537
return dbus.UInt64(self.interval_milliseconds())
2049
1538
self.interval = datetime.timedelta(0, 0, 0, value)
2050
1539
if getattr(self, "checker_initiator_tag", None) is None:
2052
1541
if self.enabled:
2053
1542
# Reschedule checker run
2054
GObject.source_remove(self.checker_initiator_tag)
2055
self.checker_initiator_tag = GObject.timeout_add(
2056
value, self.start_checker)
2057
self.start_checker() # Start one now, too
1543
gobject.source_remove(self.checker_initiator_tag)
1544
self.checker_initiator_tag = (gobject.timeout_add
1545
(value, self.start_checker))
1546
self.start_checker() # Start one now, too
2059
1548
# Checker - property
2060
@dbus_service_property(_interface,
1549
@dbus_service_property(_interface, signature="s",
2062
1550
access="readwrite")
2063
1551
def Checker_dbus_property(self, value=None):
2064
1552
if value is None: # get
2065
1553
return dbus.String(self.checker_command)
2066
self.checker_command = str(value)
1554
self.checker_command = unicode(value)
2068
1556
# CheckerRunning - property
2069
@dbus_service_property(_interface,
1557
@dbus_service_property(_interface, signature="b",
2071
1558
access="readwrite")
2072
1559
def CheckerRunning_dbus_property(self, value=None):
2073
1560
if value is None: # get
2288
1788
def fingerprint(openpgp):
2289
1789
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2290
1790
# New GnuTLS "datum" with the OpenPGP public key
2291
datum = gnutls.datum_t(
2292
ctypes.cast(ctypes.c_char_p(openpgp),
2293
ctypes.POINTER(ctypes.c_ubyte)),
2294
ctypes.c_uint(len(openpgp)))
1791
datum = (gnutls.library.types
1792
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1795
ctypes.c_uint(len(openpgp))))
2295
1796
# New empty GnuTLS certificate
2296
crt = gnutls.openpgp_crt_t()
2297
gnutls.openpgp_crt_init(ctypes.byref(crt))
1797
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1798
(gnutls.library.functions
1799
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2298
1800
# Import the OpenPGP public key into the certificate
2299
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2300
gnutls.OPENPGP_FMT_RAW)
1801
(gnutls.library.functions
1802
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1803
gnutls.library.constants
1804
.GNUTLS_OPENPGP_FMT_RAW))
2301
1805
# Verify the self signature in the key
2302
1806
crtverify = ctypes.c_uint()
2303
gnutls.openpgp_crt_verify_self(crt, 0,
2304
ctypes.byref(crtverify))
1807
(gnutls.library.functions
1808
.gnutls_openpgp_crt_verify_self(crt, 0,
1809
ctypes.byref(crtverify)))
2305
1810
if crtverify.value != 0:
2306
gnutls.openpgp_crt_deinit(crt)
2307
raise gnutls.CertificateSecurityError("Verify failed")
1811
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1812
raise (gnutls.errors.CertificateSecurityError
2308
1814
# New buffer for the fingerprint
2309
1815
buf = ctypes.create_string_buffer(20)
2310
1816
buf_len = ctypes.c_size_t()
2311
1817
# Get the fingerprint from the certificate into the buffer
2312
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2313
ctypes.byref(buf_len))
1818
(gnutls.library.functions
1819
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1820
ctypes.byref(buf_len)))
2314
1821
# Deinit the certificate
2315
gnutls.openpgp_crt_deinit(crt)
1822
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2316
1823
# Convert the buffer to a Python bytestring
2317
1824
fpr = ctypes.string_at(buf, buf_len.value)
2318
1825
# Convert the bytestring to hexadecimal notation
2572
def rfc3339_duration_to_delta(duration):
2573
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2575
>>> rfc3339_duration_to_delta("P7D")
2576
datetime.timedelta(7)
2577
>>> rfc3339_duration_to_delta("PT60S")
2578
datetime.timedelta(0, 60)
2579
>>> rfc3339_duration_to_delta("PT60M")
2580
datetime.timedelta(0, 3600)
2581
>>> rfc3339_duration_to_delta("PT24H")
2582
datetime.timedelta(1)
2583
>>> rfc3339_duration_to_delta("P1W")
2584
datetime.timedelta(7)
2585
>>> rfc3339_duration_to_delta("PT5M30S")
2586
datetime.timedelta(0, 330)
2587
>>> rfc3339_duration_to_delta("P1DT3M20S")
2588
datetime.timedelta(1, 200)
2591
# Parsing an RFC 3339 duration with regular expressions is not
2592
# possible - there would have to be multiple places for the same
2593
# values, like seconds. The current code, while more esoteric, is
2594
# cleaner without depending on a parsing library. If Python had a
2595
# built-in library for parsing we would use it, but we'd like to
2596
# avoid excessive use of external libraries.
2598
# New type for defining tokens, syntax, and semantics all-in-one
2599
Token = collections.namedtuple("Token", (
2600
"regexp", # To match token; if "value" is not None, must have
2601
# a "group" containing digits
2602
"value", # datetime.timedelta or None
2603
"followers")) # Tokens valid after this token
2604
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2605
# the "duration" ABNF definition in RFC 3339, Appendix A.
2606
token_end = Token(re.compile(r"$"), None, frozenset())
2607
token_second = Token(re.compile(r"(\d+)S"),
2608
datetime.timedelta(seconds=1),
2609
frozenset((token_end, )))
2610
token_minute = Token(re.compile(r"(\d+)M"),
2611
datetime.timedelta(minutes=1),
2612
frozenset((token_second, token_end)))
2613
token_hour = Token(re.compile(r"(\d+)H"),
2614
datetime.timedelta(hours=1),
2615
frozenset((token_minute, token_end)))
2616
token_time = Token(re.compile(r"T"),
2618
frozenset((token_hour, token_minute,
2620
token_day = Token(re.compile(r"(\d+)D"),
2621
datetime.timedelta(days=1),
2622
frozenset((token_time, token_end)))
2623
token_month = Token(re.compile(r"(\d+)M"),
2624
datetime.timedelta(weeks=4),
2625
frozenset((token_day, token_end)))
2626
token_year = Token(re.compile(r"(\d+)Y"),
2627
datetime.timedelta(weeks=52),
2628
frozenset((token_month, token_end)))
2629
token_week = Token(re.compile(r"(\d+)W"),
2630
datetime.timedelta(weeks=1),
2631
frozenset((token_end, )))
2632
token_duration = Token(re.compile(r"P"), None,
2633
frozenset((token_year, token_month,
2634
token_day, token_time,
2636
# Define starting values
2637
value = datetime.timedelta() # Value so far
2639
followers = frozenset((token_duration, )) # Following valid tokens
2640
s = duration # String left to parse
2641
# Loop until end token is found
2642
while found_token is not token_end:
2643
# Search for any currently valid tokens
2644
for token in followers:
2645
match = token.regexp.match(s)
2646
if match is not None:
2648
if token.value is not None:
2649
# Value found, parse digits
2650
factor = int(match.group(1), 10)
2651
# Add to value so far
2652
value += factor * token.value
2653
# Strip token from string
2654
s = token.regexp.sub("", s, 1)
2657
# Set valid next tokens
2658
followers = found_token.followers
2661
# No currently valid tokens were found
2662
raise ValueError("Invalid RFC 3339 duration: {!r}"
2668
2050
def string_to_delta(interval):
2669
2051
"""Parse a string and return a datetime.timedelta
2799
2166
"debug": "False",
2801
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2802
":+SIGN-DSA-SHA256",
2168
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2803
2169
"servicename": "Mandos",
2804
2170
"use_dbus": "True",
2805
2171
"use_ipv6": "True",
2806
2172
"debuglevel": "",
2807
2173
"restore": "True",
2809
"statedir": "/var/lib/mandos",
2810
"foreground": "False",
2174
"statedir": "/var/lib/mandos"
2814
2177
# Parse config file for server-global settings
2815
2178
server_config = configparser.SafeConfigParser(server_defaults)
2816
2179
del server_defaults
2817
server_config.read(os.path.join(options.configdir, "mandos.conf"))
2180
server_config.read(os.path.join(options.configdir,
2818
2182
# Convert the SafeConfigParser object to a dict
2819
2183
server_settings = server_config.defaults()
2820
2184
# Use the appropriate methods on the non-string config options
2821
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
2185
for option in ("debug", "use_dbus", "use_ipv6"):
2822
2186
server_settings[option] = server_config.getboolean("DEFAULT",
2824
2188
if server_settings["port"]:
2825
2189
server_settings["port"] = server_config.getint("DEFAULT",
2827
if server_settings["socket"]:
2828
server_settings["socket"] = server_config.getint("DEFAULT",
2830
# Later, stdin will, and stdout and stderr might, be dup'ed
2831
# over with an opened os.devnull. But we don't want this to
2832
# happen with a supplied network socket.
2833
if 0 <= server_settings["socket"] <= 2:
2834
server_settings["socket"] = os.dup(server_settings
2836
2191
del server_config
2838
2193
# Override the settings from the config file with command line
2839
2194
# options, if set.
2840
2195
for option in ("interface", "address", "port", "debug",
2841
"priority", "servicename", "configdir", "use_dbus",
2842
"use_ipv6", "debuglevel", "restore", "statedir",
2843
"socket", "foreground", "zeroconf"):
2196
"priority", "servicename", "configdir",
2197
"use_dbus", "use_ipv6", "debuglevel", "restore",
2844
2199
value = getattr(options, option)
2845
2200
if value is not None:
2846
2201
server_settings[option] = value
2848
2203
# Force all strings to be unicode
2849
2204
for option in server_settings.keys():
2850
if isinstance(server_settings[option], bytes):
2851
server_settings[option] = (server_settings[option]
2853
# Force all boolean options to be boolean
2854
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2855
"foreground", "zeroconf"):
2856
server_settings[option] = bool(server_settings[option])
2857
# Debug implies foreground
2858
if server_settings["debug"]:
2859
server_settings["foreground"] = True
2205
if type(server_settings[option]) is str:
2206
server_settings[option] = unicode(server_settings[option])
2860
2207
# Now we have our good server settings in "server_settings"
2862
2209
##################################################################
2864
if (not server_settings["zeroconf"]
2865
and not (server_settings["port"]
2866
or server_settings["socket"] != "")):
2867
parser.error("Needs port or socket to work without Zeroconf")
2869
2211
# For convenience
2870
2212
debug = server_settings["debug"]
2871
2213
debuglevel = server_settings["debuglevel"]
2900
2240
global mandos_dbus_service
2901
2241
mandos_dbus_service = None
2904
if server_settings["socket"] != "":
2905
socketfd = server_settings["socket"]
2906
tcp_server = MandosServer(
2907
(server_settings["address"], server_settings["port"]),
2909
interface=(server_settings["interface"] or None),
2911
gnutls_priority=server_settings["priority"],
2915
pidfilename = "/run/mandos.pid"
2916
if not os.path.isdir("/run/."):
2917
pidfilename = "/var/run/mandos.pid"
2243
tcp_server = MandosServer((server_settings["address"],
2244
server_settings["port"]),
2246
interface=(server_settings["interface"]
2250
server_settings["priority"],
2253
pidfilename = "/var/run/mandos.pid"
2920
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2921
except IOError as e:
2922
logger.error("Could not open file %r", pidfilename,
2255
pidfile = open(pidfilename, "w")
2257
logger.error("Could not open file %r", pidfilename)
2925
for name, group in (("_mandos", "_mandos"),
2926
("mandos", "mandos"),
2927
("nobody", "nogroup")):
2260
uid = pwd.getpwnam("_mandos").pw_uid
2261
gid = pwd.getpwnam("_mandos").pw_gid
2929
uid = pwd.getpwnam(name).pw_uid
2930
gid = pwd.getpwnam(group).pw_gid
2264
uid = pwd.getpwnam("mandos").pw_uid
2265
gid = pwd.getpwnam("mandos").pw_gid
2932
2266
except KeyError:
2268
uid = pwd.getpwnam("nobody").pw_uid
2269
gid = pwd.getpwnam("nobody").pw_gid
2940
2276
except OSError as error:
2941
if error.errno != errno.EPERM:
2277
if error[0] != errno.EPERM:
2945
2281
# Enable all possible GnuTLS debugging
2947
2283
# "Use a log level over 10 to enable all debugging options."
2948
2284
# - GnuTLS manual
2949
gnutls.global_set_log_level(11)
2285
gnutls.library.functions.gnutls_global_set_log_level(11)
2287
@gnutls.library.types.gnutls_log_func
2952
2288
def debug_gnutls(level, string):
2953
2289
logger.debug("GnuTLS: %s", string[:-1])
2955
gnutls.global_set_log_function(debug_gnutls)
2291
(gnutls.library.functions
2292
.gnutls_global_set_log_function(debug_gnutls))
2957
2294
# Redirect stdin so all checkers get /dev/null
2958
2295
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2963
2300
# Need to fork before connecting to D-Bus
2965
2302
# Close all input and output, do double fork, etc.
2968
# multiprocessing will use threads, so before we use GObject we
2969
# need to inform GObject that threads will be used.
2970
GObject.threads_init()
2305
gobject.threads_init()
2972
2307
global main_loop
2973
2308
# From the Avahi example code
2974
2309
DBusGMainLoop(set_as_default=True)
2975
main_loop = GObject.MainLoop()
2310
main_loop = gobject.MainLoop()
2976
2311
bus = dbus.SystemBus()
2977
2312
# End of Avahi example code
2980
2315
bus_name = dbus.service.BusName("se.recompile.Mandos",
2983
old_bus_name = dbus.service.BusName(
2984
"se.bsnet.fukt.Mandos", bus,
2986
except dbus.exceptions.DBusException as e:
2987
logger.error("Disabling D-Bus:", exc_info=e)
2316
bus, do_not_queue=True)
2317
old_bus_name = (dbus.service.BusName
2318
("se.bsnet.fukt.Mandos", bus,
2320
except dbus.exceptions.NameExistsException as e:
2321
logger.error(unicode(e) + ", disabling D-Bus")
2988
2322
use_dbus = False
2989
2323
server_settings["use_dbus"] = False
2990
2324
tcp_server.use_dbus = False
2992
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2993
service = AvahiServiceToSyslog(
2994
name = server_settings["servicename"],
2995
servicetype = "_mandos._tcp",
2996
protocol = protocol,
2998
if server_settings["interface"]:
2999
service.interface = if_nametoindex(
3000
server_settings["interface"].encode("utf-8"))
2325
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2326
service = AvahiServiceToSyslog(name =
2327
server_settings["servicename"],
2328
servicetype = "_mandos._tcp",
2329
protocol = protocol, bus = bus)
2330
if server_settings["interface"]:
2331
service.interface = (if_nametoindex
2332
(str(server_settings["interface"])))
3002
2334
global multiprocessing_manager
3003
2335
multiprocessing_manager = multiprocessing.Manager()
3005
2337
client_class = Client
3007
client_class = functools.partial(ClientDBus, bus = bus)
2339
client_class = functools.partial(ClientDBusTransitional,
3009
2342
client_settings = Client.config_parser(client_config)
3010
2343
old_client_settings = {}
3011
2344
clients_data = {}
3013
# This is used to redirect stdout and stderr for checker processes
3015
wnull = open(os.devnull, "w") # A writable /dev/null
3016
# Only used if server is running in foreground but not in debug
3018
if debug or not foreground:
3021
2346
# Get client data and settings from last running state.
3022
2347
if server_settings["restore"]:
3024
2349
with open(stored_state_path, "rb") as stored_state:
3025
clients_data, old_client_settings = pickle.load(
2350
clients_data, old_client_settings = (pickle.load
3027
2352
os.remove(stored_state_path)
3028
2353
except IOError as e:
3029
if e.errno == errno.ENOENT:
3030
logger.warning("Could not load persistent state:"
3031
" {}".format(os.strerror(e.errno)))
3033
logger.critical("Could not load persistent state:",
2354
logger.warning("Could not load persistent state: {0}"
2356
if e.errno != errno.ENOENT:
3036
2358
except EOFError as e:
3037
2359
logger.warning("Could not load persistent state: "
2360
"EOFError: {0}".format(e))
3041
2362
with PGPEngine() as pgp:
3042
for client_name, client in clients_data.items():
3043
# Skip removed clients
3044
if client_name not in client_settings:
2363
for client_name, client in clients_data.iteritems():
3047
2364
# Decide which value to use after restoring saved state.
3048
2365
# We have three different values: Old config file,
3049
2366
# new config file, and saved state.