133
152
u" after %i retries, exiting.",
134
153
self.rename_count)
135
154
raise AvahiServiceError(u"Too many renames")
136
self.name = server.GetAlternativeServiceName(self.name)
155
self.name = self.server.GetAlternativeServiceName(self.name)
137
156
logger.info(u"Changing Zeroconf service name to %r ...",
139
158
syslogger.setFormatter(logging.Formatter
140
('Mandos (%s): %%(levelname)s:'
141
' %%(message)s' % self.name))
159
(u'Mandos (%s) [%%(process)d]:'
160
u' %%(levelname)s: %%(message)s'
144
164
self.rename_count += 1
145
165
def remove(self):
146
166
"""Derived from the Avahi example code"""
147
if group is not None:
167
if self.group is not None:
150
170
"""Derived from the Avahi example code"""
153
group = dbus.Interface(bus.get_object
155
server.EntryGroupNew()),
156
avahi.DBUS_INTERFACE_ENTRY_GROUP)
157
group.connect_to_signal('StateChanged',
158
entry_group_state_changed)
171
if self.group is None:
172
self.group = dbus.Interface(
173
self.bus.get_object(avahi.DBUS_NAME,
174
self.server.EntryGroupNew()),
175
avahi.DBUS_INTERFACE_ENTRY_GROUP)
176
self.group.connect_to_signal('StateChanged',
177
self.entry_group_state_changed)
159
178
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
160
service.name, service.type)
162
self.interface, # interface
163
self.protocol, # protocol
164
dbus.UInt32(0), # flags
165
self.name, self.type,
166
self.domain, self.host,
167
dbus.UInt16(self.port),
168
avahi.string_array_to_txt_array(self.TXT))
171
# From the Avahi example code:
172
group = None # our entry group
173
# End of Avahi example code
176
def _datetime_to_dbus(dt, variant_level=0):
177
"""Convert a UTC datetime.datetime() to a D-Bus type."""
178
return dbus.String(dt.isoformat(), variant_level=variant_level)
181
class Client(dbus.service.Object):
179
self.name, self.type)
180
self.group.AddService(
183
dbus.UInt32(0), # flags
184
self.name, self.type,
185
self.domain, self.host,
186
dbus.UInt16(self.port),
187
avahi.string_array_to_txt_array(self.TXT))
189
def entry_group_state_changed(self, state, error):
190
"""Derived from the Avahi example code"""
191
logger.debug(u"Avahi state change: %i", state)
193
if state == avahi.ENTRY_GROUP_ESTABLISHED:
194
logger.debug(u"Zeroconf service established.")
195
elif state == avahi.ENTRY_GROUP_COLLISION:
196
logger.warning(u"Zeroconf service name collision.")
198
elif state == avahi.ENTRY_GROUP_FAILURE:
199
logger.critical(u"Avahi: Error in group state changed %s",
201
raise AvahiGroupError(u"State changed: %s"
204
"""Derived from the Avahi example code"""
205
if self.group is not None:
208
def server_state_changed(self, state):
209
"""Derived from the Avahi example code"""
210
if state == avahi.SERVER_COLLISION:
211
logger.error(u"Zeroconf server name collision")
213
elif state == avahi.SERVER_RUNNING:
216
"""Derived from the Avahi example code"""
217
if self.server is None:
218
self.server = dbus.Interface(
219
self.bus.get_object(avahi.DBUS_NAME,
220
avahi.DBUS_PATH_SERVER),
221
avahi.DBUS_INTERFACE_SERVER)
222
self.server.connect_to_signal(u"StateChanged",
223
self.server_state_changed)
224
self.server_state_changed(self.server.GetState())
227
class Client(object):
182
228
"""A representation of a client host served by this server.
184
231
name: string; from the config file, used in log messages and
185
232
D-Bus identifiers
456
465
if error.errno != errno.ESRCH: # No such process
458
467
self.checker = None
460
self.PropertyChanged(dbus.String(u"checker_running"),
461
dbus.Boolean(False, variant_level=1))
463
469
def still_valid(self):
464
470
"""Has the timeout not yet passed for this client?"""
465
if not getattr(self, "enabled", False):
471
if not getattr(self, u"enabled", False):
467
473
now = datetime.datetime.utcnow()
468
474
if self.last_checked_ok is None:
469
475
return now < (self.created + self.timeout)
471
477
return now < (self.last_checked_ok + self.timeout)
480
class ClientDBus(Client, dbus.service.Object):
481
"""A Client class using D-Bus
484
dbus_object_path: dbus.ObjectPath
485
bus: dbus.SystemBus()
487
# dbus.service.Object doesn't use super(), so we can't either.
489
def __init__(self, bus = None, *args, **kwargs):
491
Client.__init__(self, *args, **kwargs)
492
# Only now, when this client is initialized, can it show up on
494
self.dbus_object_path = (dbus.ObjectPath
496
+ self.name.replace(u".", u"_")))
497
dbus.service.Object.__init__(self, self.bus,
498
self.dbus_object_path)
501
def _datetime_to_dbus(dt, variant_level=0):
502
"""Convert a UTC datetime.datetime() to a D-Bus type."""
503
return dbus.String(dt.isoformat(),
504
variant_level=variant_level)
507
oldstate = getattr(self, u"enabled", False)
508
r = Client.enable(self)
509
if oldstate != self.enabled:
511
self.PropertyChanged(dbus.String(u"enabled"),
512
dbus.Boolean(True, variant_level=1))
513
self.PropertyChanged(
514
dbus.String(u"last_enabled"),
515
self._datetime_to_dbus(self.last_enabled,
519
def disable(self, signal = True):
520
oldstate = getattr(self, u"enabled", False)
521
r = Client.disable(self)
522
if signal and oldstate != self.enabled:
524
self.PropertyChanged(dbus.String(u"enabled"),
525
dbus.Boolean(False, variant_level=1))
528
def __del__(self, *args, **kwargs):
530
self.remove_from_connection()
533
if hasattr(dbus.service.Object, u"__del__"):
534
dbus.service.Object.__del__(self, *args, **kwargs)
535
Client.__del__(self, *args, **kwargs)
537
def checker_callback(self, pid, condition, command,
539
self.checker_callback_tag = None
542
self.PropertyChanged(dbus.String(u"checker_running"),
543
dbus.Boolean(False, variant_level=1))
544
if os.WIFEXITED(condition):
545
exitstatus = os.WEXITSTATUS(condition)
547
self.CheckerCompleted(dbus.Int16(exitstatus),
548
dbus.Int64(condition),
549
dbus.String(command))
552
self.CheckerCompleted(dbus.Int16(-1),
553
dbus.Int64(condition),
554
dbus.String(command))
556
return Client.checker_callback(self, pid, condition, command,
559
def checked_ok(self, *args, **kwargs):
560
r = Client.checked_ok(self, *args, **kwargs)
562
self.PropertyChanged(
563
dbus.String(u"last_checked_ok"),
564
(self._datetime_to_dbus(self.last_checked_ok,
568
def start_checker(self, *args, **kwargs):
569
old_checker = self.checker
570
if self.checker is not None:
571
old_checker_pid = self.checker.pid
573
old_checker_pid = None
574
r = Client.start_checker(self, *args, **kwargs)
575
# Only if new checker process was started
576
if (self.checker is not None
577
and old_checker_pid != self.checker.pid):
579
self.CheckerStarted(self.current_checker_command)
580
self.PropertyChanged(
581
dbus.String(u"checker_running"),
582
dbus.Boolean(True, variant_level=1))
585
def stop_checker(self, *args, **kwargs):
586
old_checker = getattr(self, u"checker", None)
587
r = Client.stop_checker(self, *args, **kwargs)
588
if (old_checker is not None
589
and getattr(self, u"checker", None) is None):
590
self.PropertyChanged(dbus.String(u"checker_running"),
591
dbus.Boolean(False, variant_level=1))
473
594
## D-Bus methods & signals
474
595
_interface = u"se.bsnet.fukt.Mandos.Client"
476
597
# CheckedOK - method
477
CheckedOK = dbus.service.method(_interface)(checked_ok)
478
CheckedOK.__name__ = "CheckedOK"
598
@dbus.service.method(_interface)
600
return self.checked_ok()
480
602
# CheckerCompleted - signal
481
@dbus.service.signal(_interface, signature="nxs")
603
@dbus.service.signal(_interface, signature=u"nxs")
482
604
def CheckerCompleted(self, exitcode, waitstatus, command):
486
608
# CheckerStarted - signal
487
@dbus.service.signal(_interface, signature="s")
609
@dbus.service.signal(_interface, signature=u"s")
488
610
def CheckerStarted(self, command):
492
614
# GetAllProperties - method
493
@dbus.service.method(_interface, out_signature="a{sv}")
615
@dbus.service.method(_interface, out_signature=u"a{sv}")
494
616
def GetAllProperties(self):
496
618
return dbus.Dictionary({
619
dbus.String(u"name"):
498
620
dbus.String(self.name, variant_level=1),
499
dbus.String("fingerprint"):
621
dbus.String(u"fingerprint"):
500
622
dbus.String(self.fingerprint, variant_level=1),
623
dbus.String(u"host"):
502
624
dbus.String(self.host, variant_level=1),
503
dbus.String("created"):
504
_datetime_to_dbus(self.created, variant_level=1),
505
dbus.String("last_enabled"):
506
(_datetime_to_dbus(self.last_enabled,
625
dbus.String(u"created"):
626
self._datetime_to_dbus(self.created,
628
dbus.String(u"last_enabled"):
629
(self._datetime_to_dbus(self.last_enabled,
508
631
if self.last_enabled is not None
509
632
else dbus.Boolean(False, variant_level=1)),
510
dbus.String("enabled"):
633
dbus.String(u"enabled"):
511
634
dbus.Boolean(self.enabled, variant_level=1),
512
dbus.String("last_checked_ok"):
513
(_datetime_to_dbus(self.last_checked_ok,
635
dbus.String(u"last_checked_ok"):
636
(self._datetime_to_dbus(self.last_checked_ok,
515
638
if self.last_checked_ok is not None
516
639
else dbus.Boolean (False, variant_level=1)),
517
dbus.String("timeout"):
640
dbus.String(u"timeout"):
518
641
dbus.UInt64(self.timeout_milliseconds(),
519
642
variant_level=1),
520
dbus.String("interval"):
643
dbus.String(u"interval"):
521
644
dbus.UInt64(self.interval_milliseconds(),
522
645
variant_level=1),
523
dbus.String("checker"):
646
dbus.String(u"checker"):
524
647
dbus.String(self.checker_command,
525
648
variant_level=1),
526
dbus.String("checker_running"):
649
dbus.String(u"checker_running"):
527
650
dbus.Boolean(self.checker is not None,
528
651
variant_level=1),
529
dbus.String("object_path"):
652
dbus.String(u"object_path"):
530
653
dbus.ObjectPath(self.dbus_object_path,
534
657
# IsStillValid - method
535
IsStillValid = (dbus.service.method(_interface, out_signature="b")
537
IsStillValid.__name__ = "IsStillValid"
658
@dbus.service.method(_interface, out_signature=u"b")
659
def IsStillValid(self):
660
return self.still_valid()
539
662
# PropertyChanged - signal
540
@dbus.service.signal(_interface, signature="sv")
663
@dbus.service.signal(_interface, signature=u"sv")
541
664
def PropertyChanged(self, property, value):
668
# ReceivedSecret - signal
669
@dbus.service.signal(_interface)
670
def ReceivedSecret(self):
675
@dbus.service.signal(_interface)
545
680
# SetChecker - method
546
@dbus.service.method(_interface, in_signature="s")
681
@dbus.service.method(_interface, in_signature=u"s")
547
682
def SetChecker(self, checker):
548
683
"D-Bus setter method"
549
684
self.checker_command = checker
605
742
# StopChecker - method
606
StopChecker = dbus.service.method(_interface)(stop_checker)
607
StopChecker.__name__ = "StopChecker"
743
@dbus.service.method(_interface)
744
def StopChecker(self):
612
def peer_certificate(session):
613
"Return the peer's OpenPGP certificate as a bytestring"
614
# If not an OpenPGP certificate...
615
if (gnutls.library.functions
616
.gnutls_certificate_type_get(session._c_object)
617
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
618
# ...do the normal thing
619
return session.peer_certificate
620
list_size = ctypes.c_uint(1)
621
cert_list = (gnutls.library.functions
622
.gnutls_certificate_get_peers
623
(session._c_object, ctypes.byref(list_size)))
624
if not bool(cert_list) and list_size.value != 0:
625
raise gnutls.errors.GNUTLSError("error getting peer"
627
if list_size.value == 0:
630
return ctypes.string_at(cert.data, cert.size)
633
def fingerprint(openpgp):
634
"Convert an OpenPGP bytestring to a hexdigit fingerprint string"
635
# New GnuTLS "datum" with the OpenPGP public key
636
datum = (gnutls.library.types
637
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
640
ctypes.c_uint(len(openpgp))))
641
# New empty GnuTLS certificate
642
crt = gnutls.library.types.gnutls_openpgp_crt_t()
643
(gnutls.library.functions
644
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
645
# Import the OpenPGP public key into the certificate
646
(gnutls.library.functions
647
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
648
gnutls.library.constants
649
.GNUTLS_OPENPGP_FMT_RAW))
650
# Verify the self signature in the key
651
crtverify = ctypes.c_uint()
652
(gnutls.library.functions
653
.gnutls_openpgp_crt_verify_self(crt, 0, ctypes.byref(crtverify)))
654
if crtverify.value != 0:
655
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
656
raise gnutls.errors.CertificateSecurityError("Verify failed")
657
# New buffer for the fingerprint
658
buf = ctypes.create_string_buffer(20)
659
buf_len = ctypes.c_size_t()
660
# Get the fingerprint from the certificate into the buffer
661
(gnutls.library.functions
662
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
663
ctypes.byref(buf_len)))
664
# Deinit the certificate
665
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
666
# Convert the buffer to a Python bytestring
667
fpr = ctypes.string_at(buf, buf_len.value)
668
# Convert the bytestring to hexadecimal notation
669
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
673
class TCP_handler(SocketServer.BaseRequestHandler, object):
674
"""A TCP request handler class.
675
Instantiated by IPv6_TCPServer for each request to handle it.
750
class ClientHandler(socketserver.BaseRequestHandler, object):
751
"""A class to handle client connections.
753
Instantiated once for each connection to handle it.
676
754
Note: This will run in its own forked process."""
678
756
def handle(self):
679
757
logger.info(u"TCP connection from: %s",
680
758
unicode(self.client_address))
681
session = (gnutls.connection
682
.ClientSession(self.request,
686
line = self.request.makefile().readline()
687
logger.debug(u"Protocol version: %r", line)
689
if int(line.strip().split()[0]) > 1:
691
except (ValueError, IndexError, RuntimeError), error:
692
logger.error(u"Unknown protocol version: %s", error)
695
# Note: gnutls.connection.X509Credentials is really a generic
696
# GnuTLS certificate credentials object so long as no X.509
697
# keys are added to it. Therefore, we can use it here despite
698
# using OpenPGP certificates.
700
#priority = ':'.join(("NONE", "+VERS-TLS1.1", "+AES-256-CBC",
701
# "+SHA1", "+COMP-NULL", "+CTYPE-OPENPGP",
703
# Use a fallback default, since this MUST be set.
704
priority = self.server.settings.get("priority", "NORMAL")
705
(gnutls.library.functions
706
.gnutls_priority_set_direct(session._c_object,
711
except gnutls.errors.GNUTLSError, error:
712
logger.warning(u"Handshake failed: %s", error)
713
# Do not run session.bye() here: the session is not
714
# established. Just abandon the request.
716
logger.debug(u"Handshake succeeded")
718
fpr = fingerprint(peer_certificate(session))
719
except (TypeError, gnutls.errors.GNUTLSError), error:
720
logger.warning(u"Bad certificate: %s", error)
723
logger.debug(u"Fingerprint: %s", fpr)
725
for c in self.server.clients:
726
if c.fingerprint == fpr:
730
logger.warning(u"Client not found for fingerprint: %s",
734
# Have to check if client.still_valid(), since it is possible
735
# that the client timed out while establishing the GnuTLS
737
if not client.still_valid():
738
logger.warning(u"Client %(name)s is invalid",
742
## This won't work here, since we're in a fork.
743
# client.checked_ok()
745
while sent_size < len(client.secret):
746
sent = session.send(client.secret[sent_size:])
747
logger.debug(u"Sent: %d, remaining: %d",
748
sent, len(client.secret)
749
- (sent_size + sent))
754
class IPv6_TCPServer(SocketServer.ForkingMixIn,
755
SocketServer.TCPServer, object):
759
logger.debug(u"IPC Pipe FD: %d", self.server.pipe[1])
760
# Open IPC pipe to parent process
761
with closing(os.fdopen(self.server.pipe[1], u"w", 1)) as ipc:
762
session = (gnutls.connection
763
.ClientSession(self.request,
767
line = self.request.makefile().readline()
768
logger.debug(u"Protocol version: %r", line)
770
if int(line.strip().split()[0]) > 1:
772
except (ValueError, IndexError, RuntimeError), error:
773
logger.error(u"Unknown protocol version: %s", error)
776
# Note: gnutls.connection.X509Credentials is really a
777
# generic GnuTLS certificate credentials object so long as
778
# no X.509 keys are added to it. Therefore, we can use it
779
# here despite using OpenPGP certificates.
781
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
782
# u"+AES-256-CBC", u"+SHA1",
783
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
785
# Use a fallback default, since this MUST be set.
786
priority = self.server.gnutls_priority
789
(gnutls.library.functions
790
.gnutls_priority_set_direct(session._c_object,
795
except gnutls.errors.GNUTLSError, error:
796
logger.warning(u"Handshake failed: %s", error)
797
# Do not run session.bye() here: the session is not
798
# established. Just abandon the request.
800
logger.debug(u"Handshake succeeded")
802
fpr = self.fingerprint(self.peer_certificate(session))
803
except (TypeError, gnutls.errors.GNUTLSError), error:
804
logger.warning(u"Bad certificate: %s", error)
807
logger.debug(u"Fingerprint: %s", fpr)
809
for c in self.server.clients:
810
if c.fingerprint == fpr:
814
ipc.write(u"NOTFOUND %s %s\n"
815
% (fpr, unicode(self.client_address)))
818
# Have to check if client.still_valid(), since it is
819
# possible that the client timed out while establishing
820
# the GnuTLS session.
821
if not client.still_valid():
822
ipc.write(u"INVALID %s\n" % client.name)
825
ipc.write(u"SENDING %s\n" % client.name)
827
while sent_size < len(client.secret):
828
sent = session.send(client.secret[sent_size:])
829
logger.debug(u"Sent: %d, remaining: %d",
830
sent, len(client.secret)
831
- (sent_size + sent))
836
def peer_certificate(session):
837
"Return the peer's OpenPGP certificate as a bytestring"
838
# If not an OpenPGP certificate...
839
if (gnutls.library.functions
840
.gnutls_certificate_type_get(session._c_object)
841
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
842
# ...do the normal thing
843
return session.peer_certificate
844
list_size = ctypes.c_uint(1)
845
cert_list = (gnutls.library.functions
846
.gnutls_certificate_get_peers
847
(session._c_object, ctypes.byref(list_size)))
848
if not bool(cert_list) and list_size.value != 0:
849
raise gnutls.errors.GNUTLSError(u"error getting peer"
851
if list_size.value == 0:
854
return ctypes.string_at(cert.data, cert.size)
857
def fingerprint(openpgp):
858
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
859
# New GnuTLS "datum" with the OpenPGP public key
860
datum = (gnutls.library.types
861
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
864
ctypes.c_uint(len(openpgp))))
865
# New empty GnuTLS certificate
866
crt = gnutls.library.types.gnutls_openpgp_crt_t()
867
(gnutls.library.functions
868
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
869
# Import the OpenPGP public key into the certificate
870
(gnutls.library.functions
871
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
872
gnutls.library.constants
873
.GNUTLS_OPENPGP_FMT_RAW))
874
# Verify the self signature in the key
875
crtverify = ctypes.c_uint()
876
(gnutls.library.functions
877
.gnutls_openpgp_crt_verify_self(crt, 0,
878
ctypes.byref(crtverify)))
879
if crtverify.value != 0:
880
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
881
raise (gnutls.errors.CertificateSecurityError
883
# New buffer for the fingerprint
884
buf = ctypes.create_string_buffer(20)
885
buf_len = ctypes.c_size_t()
886
# Get the fingerprint from the certificate into the buffer
887
(gnutls.library.functions
888
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
889
ctypes.byref(buf_len)))
890
# Deinit the certificate
891
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
892
# Convert the buffer to a Python bytestring
893
fpr = ctypes.string_at(buf, buf_len.value)
894
# Convert the bytestring to hexadecimal notation
895
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
899
class ForkingMixInWithPipe(socketserver.ForkingMixIn, object):
900
"""Like socketserver.ForkingMixIn, but also pass a pipe."""
901
def process_request(self, request, client_address):
902
"""Overrides and wraps the original process_request().
904
This function creates a new pipe in self.pipe
906
self.pipe = os.pipe()
907
super(ForkingMixInWithPipe,
908
self).process_request(request, client_address)
909
os.close(self.pipe[1]) # close write end
910
self.add_pipe(self.pipe[0])
911
def add_pipe(self, pipe):
912
"""Dummy function; override as necessary"""
916
class IPv6_TCPServer(ForkingMixInWithPipe,
917
socketserver.TCPServer, object):
756
918
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
758
settings: Server settings
759
clients: Set() of Client objects
760
921
enabled: Boolean; whether this server is activated yet
922
interface: None or a network interface name (string)
923
use_ipv6: Boolean; to use IPv6 or not
762
address_family = socket.AF_INET6
763
def __init__(self, *args, **kwargs):
764
if "settings" in kwargs:
765
self.settings = kwargs["settings"]
766
del kwargs["settings"]
767
if "clients" in kwargs:
768
self.clients = kwargs["clients"]
769
del kwargs["clients"]
770
if "use_ipv6" in kwargs:
771
if not kwargs["use_ipv6"]:
772
self.address_family = socket.AF_INET
773
del kwargs["use_ipv6"]
775
super(IPv6_TCPServer, self).__init__(*args, **kwargs)
925
def __init__(self, server_address, RequestHandlerClass,
926
interface=None, use_ipv6=True):
927
self.interface = interface
929
self.address_family = socket.AF_INET6
930
socketserver.TCPServer.__init__(self, server_address,
776
932
def server_bind(self):
777
933
"""This overrides the normal server_bind() function
778
934
to bind to an interface if one was specified, and also NOT to
779
935
bind to an address or port if they were not specified."""
780
if self.settings["interface"]:
781
# 25 is from /usr/include/asm-i486/socket.h
782
SO_BINDTODEVICE = getattr(socket, "SO_BINDTODEVICE", 25)
784
self.socket.setsockopt(socket.SOL_SOCKET,
786
self.settings["interface"])
787
except socket.error, error:
788
if error[0] == errno.EPERM:
789
logger.error(u"No permission to"
790
u" bind to interface %s",
791
self.settings["interface"])
936
if self.interface is not None:
937
if SO_BINDTODEVICE is None:
938
logger.error(u"SO_BINDTODEVICE does not exist;"
939
u" cannot bind to interface %s",
943
self.socket.setsockopt(socket.SOL_SOCKET,
947
except socket.error, error:
948
if error[0] == errno.EPERM:
949
logger.error(u"No permission to"
950
u" bind to interface %s",
952
elif error[0] == errno.ENOPROTOOPT:
953
logger.error(u"SO_BINDTODEVICE not available;"
954
u" cannot bind to interface %s",
794
958
# Only bind(2) the socket if we really need to.
795
959
if self.server_address[0] or self.server_address[1]:
796
960
if not self.server_address[0]:
797
961
if self.address_family == socket.AF_INET6:
798
any_address = "::" # in6addr_any
962
any_address = u"::" # in6addr_any
800
964
any_address = socket.INADDR_ANY
801
965
self.server_address = (any_address,
803
967
elif not self.server_address[1]:
804
968
self.server_address = (self.server_address[0],
806
# if self.settings["interface"]:
807
971
# self.server_address = (self.server_address[0],
813
return super(IPv6_TCPServer, self).server_bind()
976
return socketserver.TCPServer.server_bind(self)
979
class MandosServer(IPv6_TCPServer):
983
clients: set of Client objects
984
gnutls_priority GnuTLS priority string
985
use_dbus: Boolean; to emit D-Bus signals or not
986
clients: set of Client objects
987
gnutls_priority GnuTLS priority string
988
use_dbus: Boolean; to emit D-Bus signals or not
990
Assumes a gobject.MainLoop event loop.
992
def __init__(self, server_address, RequestHandlerClass,
993
interface=None, use_ipv6=True, clients=None,
994
gnutls_priority=None, use_dbus=True):
996
self.clients = clients
997
if self.clients is None:
999
self.use_dbus = use_dbus
1000
self.gnutls_priority = gnutls_priority
1001
IPv6_TCPServer.__init__(self, server_address,
1002
RequestHandlerClass,
1003
interface = interface,
1004
use_ipv6 = use_ipv6)
814
1005
def server_activate(self):
815
1006
if self.enabled:
816
return super(IPv6_TCPServer, self).server_activate()
1007
return socketserver.TCPServer.server_activate(self)
817
1008
def enable(self):
818
1009
self.enabled = True
1010
def add_pipe(self, pipe):
1011
# Call "handle_ipc" for both data and EOF events
1012
gobject.io_add_watch(pipe, gobject.IO_IN | gobject.IO_HUP,
1014
def handle_ipc(self, source, condition, file_objects={}):
1016
gobject.IO_IN: u"IN", # There is data to read.
1017
gobject.IO_OUT: u"OUT", # Data can be written (without
1019
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1020
gobject.IO_ERR: u"ERR", # Error condition.
1021
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1022
# broken, usually for pipes and
1025
conditions_string = ' | '.join(name
1027
condition_names.iteritems()
1028
if cond & condition)
1029
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1032
# Turn the pipe file descriptor into a Python file object
1033
if source not in file_objects:
1034
file_objects[source] = os.fdopen(source, u"r", 1)
1036
# Read a line from the file object
1037
cmdline = file_objects[source].readline()
1038
if not cmdline: # Empty line means end of file
1039
# close the IPC pipe
1040
file_objects[source].close()
1041
del file_objects[source]
1043
# Stop calling this function
1046
logger.debug(u"IPC command: %r", cmdline)
1048
# Parse and act on command
1049
cmd, args = cmdline.rstrip(u"\r\n").split(None, 1)
1051
if cmd == u"NOTFOUND":
1052
logger.warning(u"Client not found for fingerprint: %s",
1056
mandos_dbus_service.ClientNotFound(args)
1057
elif cmd == u"INVALID":
1058
for client in self.clients:
1059
if client.name == args:
1060
logger.warning(u"Client %s is invalid", args)
1066
logger.error(u"Unknown client %s is invalid", args)
1067
elif cmd == u"SENDING":
1068
for client in self.clients:
1069
if client.name == args:
1070
logger.info(u"Sending secret to %s", client.name)
1074
client.ReceivedSecret()
1077
logger.error(u"Sending secret to unknown client %s",
1080
logger.error(u"Unknown IPC command: %r", cmdline)
1082
# Keep calling this function
821
1086
def string_to_delta(interval):
822
1087
"""Parse a string and return a datetime.timedelta
824
>>> string_to_delta('7d')
1089
>>> string_to_delta(u'7d')
825
1090
datetime.timedelta(7)
826
>>> string_to_delta('60s')
1091
>>> string_to_delta(u'60s')
827
1092
datetime.timedelta(0, 60)
828
>>> string_to_delta('60m')
1093
>>> string_to_delta(u'60m')
829
1094
datetime.timedelta(0, 3600)
830
>>> string_to_delta('24h')
1095
>>> string_to_delta(u'24h')
831
1096
datetime.timedelta(1)
832
1097
>>> string_to_delta(u'1w')
833
1098
datetime.timedelta(7)
834
>>> string_to_delta('5m 30s')
1099
>>> string_to_delta(u'5m 30s')
835
1100
datetime.timedelta(0, 330)
837
1102
timevalue = datetime.timedelta(0)
1175
######################################################################
1176
# Parsing of options, both command line and config file
930
1178
parser = optparse.OptionParser(version = "%%prog %s" % version)
931
parser.add_option("-i", "--interface", type="string",
932
metavar="IF", help="Bind to interface IF")
933
parser.add_option("-a", "--address", type="string",
934
help="Address to listen for requests on")
935
parser.add_option("-p", "--port", type="int",
936
help="Port number to receive requests on")
937
parser.add_option("--check", action="store_true",
938
help="Run self-test")
939
parser.add_option("--debug", action="store_true",
940
help="Debug mode; run in foreground and log to"
942
parser.add_option("--priority", type="string", help="GnuTLS"
943
" priority string (see GnuTLS documentation)")
944
parser.add_option("--servicename", type="string", metavar="NAME",
945
help="Zeroconf service name")
946
parser.add_option("--configdir", type="string",
947
default="/etc/mandos", metavar="DIR",
948
help="Directory to search for configuration"
950
parser.add_option("--no-dbus", action="store_false",
952
help=optparse.SUPPRESS_HELP) # XXX: Not done yet
953
parser.add_option("--no-ipv6", action="store_false",
954
dest="use_ipv6", help="Do not use IPv6")
1179
parser.add_option("-i", u"--interface", type=u"string",
1180
metavar="IF", help=u"Bind to interface IF")
1181
parser.add_option("-a", u"--address", type=u"string",
1182
help=u"Address to listen for requests on")
1183
parser.add_option("-p", u"--port", type=u"int",
1184
help=u"Port number to receive requests on")
1185
parser.add_option("--check", action=u"store_true",
1186
help=u"Run self-test")
1187
parser.add_option("--debug", action=u"store_true",
1188
help=u"Debug mode; run in foreground and log to"
1190
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1191
u" priority string (see GnuTLS documentation)")
1192
parser.add_option("--servicename", type=u"string",
1193
metavar=u"NAME", help=u"Zeroconf service name")
1194
parser.add_option("--configdir", type=u"string",
1195
default=u"/etc/mandos", metavar=u"DIR",
1196
help=u"Directory to search for configuration"
1198
parser.add_option("--no-dbus", action=u"store_false",
1199
dest=u"use_dbus", help=u"Do not provide D-Bus"
1200
u" system bus interface")
1201
parser.add_option("--no-ipv6", action=u"store_false",
1202
dest=u"use_ipv6", help=u"Do not use IPv6")
955
1203
options = parser.parse_args()[0]
957
1205
if options.check:
962
1210
# Default values for config file for server-global settings
963
server_defaults = { "interface": "",
968
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
969
"servicename": "Mandos",
1211
server_defaults = { u"interface": u"",
1216
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1217
u"servicename": u"Mandos",
1218
u"use_dbus": u"True",
1219
u"use_ipv6": u"True",
974
1222
# Parse config file for server-global settings
975
server_config = ConfigParser.SafeConfigParser(server_defaults)
1223
server_config = configparser.SafeConfigParser(server_defaults)
976
1224
del server_defaults
977
server_config.read(os.path.join(options.configdir, "mandos.conf"))
1225
server_config.read(os.path.join(options.configdir,
978
1227
# Convert the SafeConfigParser object to a dict
979
1228
server_settings = server_config.defaults()
980
1229
# Use the appropriate methods on the non-string config options
981
server_settings["debug"] = server_config.getboolean("DEFAULT",
983
server_settings["use_dbus"] = server_config.getboolean("DEFAULT",
985
server_settings["use_ipv6"] = server_config.getboolean("DEFAULT",
1230
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1231
server_settings[option] = server_config.getboolean(u"DEFAULT",
987
1233
if server_settings["port"]:
988
server_settings["port"] = server_config.getint("DEFAULT",
1234
server_settings["port"] = server_config.getint(u"DEFAULT",
990
1236
del server_config
992
1238
# Override the settings from the config file with command line
993
1239
# options, if set.
994
for option in ("interface", "address", "port", "debug",
995
"priority", "servicename", "configdir",
996
"use_dbus", "use_ipv6"):
1240
for option in (u"interface", u"address", u"port", u"debug",
1241
u"priority", u"servicename", u"configdir",
1242
u"use_dbus", u"use_ipv6"):
997
1243
value = getattr(options, option)
998
1244
if value is not None:
999
1245
server_settings[option] = value
1247
# Force all strings to be unicode
1248
for option in server_settings.keys():
1249
if type(server_settings[option]) is str:
1250
server_settings[option] = unicode(server_settings[option])
1001
1251
# Now we have our good server settings in "server_settings"
1253
##################################################################
1003
1255
# For convenience
1004
debug = server_settings["debug"]
1005
use_dbus = server_settings["use_dbus"]
1006
use_dbus = False # XXX: Not done yet
1007
use_ipv6 = server_settings["use_ipv6"]
1256
debug = server_settings[u"debug"]
1257
use_dbus = server_settings[u"use_dbus"]
1258
use_ipv6 = server_settings[u"use_ipv6"]
1010
1261
syslogger.setLevel(logging.WARNING)
1011
1262
console.setLevel(logging.WARNING)
1013
if server_settings["servicename"] != "Mandos":
1264
if server_settings[u"servicename"] != u"Mandos":
1014
1265
syslogger.setFormatter(logging.Formatter
1015
('Mandos (%s): %%(levelname)s:'
1017
% server_settings["servicename"]))
1266
(u'Mandos (%s) [%%(process)d]:'
1267
u' %%(levelname)s: %%(message)s'
1268
% server_settings[u"servicename"]))
1019
1270
# Parse config file with clients
1020
client_defaults = { "timeout": "1h",
1022
"checker": "fping -q -- %%(host)s",
1271
client_defaults = { u"timeout": u"1h",
1273
u"checker": u"fping -q -- %%(host)s",
1025
client_config = ConfigParser.SafeConfigParser(client_defaults)
1026
client_config.read(os.path.join(server_settings["configdir"],
1030
tcp_server = IPv6_TCPServer((server_settings["address"],
1031
server_settings["port"]),
1033
settings=server_settings,
1034
clients=clients, use_ipv6=use_ipv6)
1035
pidfilename = "/var/run/mandos.pid"
1276
client_config = configparser.SafeConfigParser(client_defaults)
1277
client_config.read(os.path.join(server_settings[u"configdir"],
1280
global mandos_dbus_service
1281
mandos_dbus_service = None
1283
tcp_server = MandosServer((server_settings[u"address"],
1284
server_settings[u"port"]),
1286
interface=server_settings[u"interface"],
1289
server_settings[u"priority"],
1291
pidfilename = u"/var/run/mandos.pid"
1037
pidfile = open(pidfilename, "w")
1293
pidfile = open(pidfilename, u"w")
1038
1294
except IOError:
1039
logger.error("Could not open file %r", pidfilename)
1295
logger.error(u"Could not open file %r", pidfilename)
1042
uid = pwd.getpwnam("_mandos").pw_uid
1043
gid = pwd.getpwnam("_mandos").pw_gid
1298
uid = pwd.getpwnam(u"_mandos").pw_uid
1299
gid = pwd.getpwnam(u"_mandos").pw_gid
1044
1300
except KeyError:
1046
uid = pwd.getpwnam("mandos").pw_uid
1047
gid = pwd.getpwnam("mandos").pw_gid
1302
uid = pwd.getpwnam(u"mandos").pw_uid
1303
gid = pwd.getpwnam(u"mandos").pw_gid
1048
1304
except KeyError:
1050
uid = pwd.getpwnam("nobody").pw_uid
1051
gid = pwd.getpwnam("nogroup").pw_gid
1306
uid = pwd.getpwnam(u"nobody").pw_uid
1307
gid = pwd.getpwnam(u"nobody").pw_gid
1052
1308
except KeyError: