154
157
u" after %i retries, exiting.",
155
158
self.rename_count)
156
159
raise AvahiServiceError(u"Too many renames")
157
self.name = self.server.GetAlternativeServiceName(self.name)
160
self.name = unicode(self.server.GetAlternativeServiceName(self.name))
158
161
logger.info(u"Changing Zeroconf service name to %r ...",
160
163
syslogger.setFormatter(logging.Formatter
161
164
(u'Mandos (%s) [%%(process)d]:'
162
165
u' %%(levelname)s: %%(message)s'
170
except dbus.exceptions.DBusException, error:
171
logger.critical(u"DBusException: %s", error)
166
174
self.rename_count += 1
167
175
def remove(self):
168
176
"""Derived from the Avahi example code"""
231
240
"""A representation of a client host served by this server.
234
name: string; from the config file, used in log messages and
236
fingerprint: string (40 or 32 hexadecimal digits); used to
237
uniquely identify the client
238
secret: bytestring; sent verbatim (over TLS) to client
239
host: string; available for use by the checker command
240
created: datetime.datetime(); (UTC) object creation
241
last_enabled: datetime.datetime(); (UTC)
243
last_checked_ok: datetime.datetime(); (UTC) or None
244
timeout: datetime.timedelta(); How long from last_checked_ok
245
until this client is invalid
246
interval: datetime.timedelta(); How often to start a new checker
247
disable_hook: If set, called by disable() as disable_hook(self)
243
_approved: bool(); 'None' if not yet approved/disapproved
244
approval_delay: datetime.timedelta(); Time to wait for approval
245
approval_duration: datetime.timedelta(); Duration of one approval
248
246
checker: subprocess.Popen(); a running checker process used
249
247
to see if the client lives.
250
248
'None' if no process is running.
251
checker_initiator_tag: a gobject event source tag, or None
252
disable_initiator_tag: - '' -
253
checker_callback_tag: - '' -
254
checker_command: string; External command which is run to check if
255
client lives. %() expansions are done at
249
checker_callback_tag: a gobject event source tag, or None
250
checker_command: string; External command which is run to check
251
if client lives. %() expansions are done at
256
252
runtime with vars(self) as dict, so that for
257
253
instance %(name)s can be used in the command.
254
checker_initiator_tag: a gobject event source tag, or None
255
created: datetime.datetime(); (UTC) object creation
258
256
current_checker_command: string; current running checker_command
257
disable_hook: If set, called by disable() as disable_hook(self)
258
disable_initiator_tag: a gobject event source tag, or None
260
fingerprint: string (40 or 32 hexadecimal digits); used to
261
uniquely identify the client
262
host: string; available for use by the checker command
263
interval: datetime.timedelta(); How often to start a new checker
264
last_approval_request: datetime.datetime(); (UTC) or None
265
last_checked_ok: datetime.datetime(); (UTC) or None
266
last_enabled: datetime.datetime(); (UTC)
267
name: string; from the config file, used in log messages and
269
secret: bytestring; sent verbatim (over TLS) to client
270
timeout: datetime.timedelta(); How long from last_checked_ok
271
until this client is disabled
272
runtime_expansions: Allowed attributes for runtime expansion.
275
runtime_expansions = (u"approval_delay", u"approval_duration",
276
u"created", u"enabled", u"fingerprint",
277
u"host", u"interval", u"last_checked_ok",
278
u"last_enabled", u"name", u"timeout")
262
281
def _timedelta_to_milliseconds(td):
263
282
"Convert a datetime.timedelta() to milliseconds"
313
335
self.checker_command = config[u"checker"]
314
336
self.current_checker_command = None
315
337
self.last_connect = None
338
self._approved = None
339
self.approved_by_default = config.get(u"approved_by_default",
341
self.approvals_pending = 0
342
self.approval_delay = string_to_delta(
343
config[u"approval_delay"])
344
self.approval_duration = string_to_delta(
345
config[u"approval_duration"])
346
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
348
def send_changedstate(self):
349
self.changedstate.acquire()
350
self.changedstate.notify_all()
351
self.changedstate.release()
317
353
def enable(self):
318
354
"""Start this client's checker and timeout hooks"""
319
355
if getattr(self, u"enabled", False):
320
356
# Already enabled
358
self.send_changedstate()
322
359
self.last_enabled = datetime.datetime.utcnow()
323
360
# Schedule a new checker to be started an 'interval' from now,
324
361
# and every interval from then on.
475
519
if error.errno != errno.ESRCH: # No such process
477
521
self.checker = None
479
def still_valid(self):
480
"""Has the timeout not yet passed for this client?"""
481
if not getattr(self, u"enabled", False):
483
now = datetime.datetime.utcnow()
484
if self.last_checked_ok is None:
485
return now < (self.created + self.timeout)
487
return now < (self.last_checked_ok + self.timeout)
490
523
def dbus_service_property(dbus_interface, signature=u"v",
491
524
access=u"readwrite", byte_arrays=False):
674
716
dbus_object_path: dbus.ObjectPath
675
717
bus: dbus.SystemBus()
720
runtime_expansions = (Client.runtime_expansions
721
+ (u"dbus_object_path",))
677
723
# dbus.service.Object doesn't use super(), so we can't either.
679
725
def __init__(self, bus = None, *args, **kwargs):
726
self._approvals_pending = 0
681
728
Client.__init__(self, *args, **kwargs)
682
729
# Only now, when this client is initialized, can it show up on
731
client_object_name = unicode(self.name).translate(
732
{ord(u"."): ord(u"_"),
733
ord(u"-"): ord(u"_")})
684
734
self.dbus_object_path = (dbus.ObjectPath
686
+ self.name.replace(u".", u"_")))
735
(u"/clients/" + client_object_name))
687
736
DBusObjectWithProperties.__init__(self, self.bus,
688
737
self.dbus_object_path)
739
def _get_approvals_pending(self):
740
return self._approvals_pending
741
def _set_approvals_pending(self, value):
742
old_value = self._approvals_pending
743
self._approvals_pending = value
745
if (hasattr(self, "dbus_object_path")
746
and bval is not bool(old_value)):
747
dbus_bool = dbus.Boolean(bval, variant_level=1)
748
self.PropertyChanged(dbus.String(u"ApprovalPending"),
751
approvals_pending = property(_get_approvals_pending,
752
_set_approvals_pending)
753
del _get_approvals_pending, _set_approvals_pending
691
756
def _datetime_to_dbus(dt, variant_level=0):
750
815
r = Client.checked_ok(self, *args, **kwargs)
751
816
# Emit D-Bus signal
752
817
self.PropertyChanged(
753
dbus.String(u"last_checked_ok"),
818
dbus.String(u"LastCheckedOK"),
754
819
(self._datetime_to_dbus(self.last_checked_ok,
755
820
variant_level=1)))
823
def need_approval(self, *args, **kwargs):
824
r = Client.need_approval(self, *args, **kwargs)
826
self.PropertyChanged(
827
dbus.String(u"LastApprovalRequest"),
828
(self._datetime_to_dbus(self.last_approval_request,
758
832
def start_checker(self, *args, **kwargs):
759
833
old_checker = self.checker
760
834
if self.checker is not None:
777
851
r = Client.stop_checker(self, *args, **kwargs)
778
852
if (old_checker is not None
779
853
and getattr(self, u"checker", None) is None):
780
self.PropertyChanged(dbus.String(u"checker_running"),
854
self.PropertyChanged(dbus.String(u"CheckerRunning"),
781
855
dbus.Boolean(False, variant_level=1))
784
## D-Bus methods & signals
858
def _reset_approved(self):
859
self._approved = None
862
def approve(self, value=True):
863
self.send_changedstate()
864
self._approved = value
865
gobject.timeout_add(self._timedelta_to_milliseconds
866
(self.approval_duration),
867
self._reset_approved)
870
## D-Bus methods, signals & properties
785
871
_interface = u"se.bsnet.fukt.Mandos.Client"
788
@dbus.service.method(_interface)
790
return self.checked_ok()
792
875
# CheckerCompleted - signal
793
876
@dbus.service.signal(_interface, signature=u"nxs")
810
893
# GotSecret - signal
811
894
@dbus.service.signal(_interface)
812
895
def GotSecret(self):
897
Is sent after a successful transfer of secret from the Mandos
898
server to mandos-client
816
902
# Rejected - signal
817
@dbus.service.signal(_interface)
903
@dbus.service.signal(_interface, signature=u"s")
904
def Rejected(self, reason):
908
# NeedApproval - signal
909
@dbus.service.signal(_interface, signature=u"tb")
910
def NeedApproval(self, timeout, default):
912
return self.need_approval()
917
@dbus.service.method(_interface, in_signature=u"b")
918
def Approve(self, value):
922
@dbus.service.method(_interface)
924
return self.checked_ok()
822
926
# Enable - method
823
927
@dbus.service.method(_interface)
824
928
def Enable(self):
842
946
def StopChecker(self):
843
947
self.stop_checker()
951
# ApprovalPending - property
952
@dbus_service_property(_interface, signature=u"b", access=u"read")
953
def ApprovalPending_dbus_property(self):
954
return dbus.Boolean(bool(self.approvals_pending))
956
# ApprovedByDefault - property
957
@dbus_service_property(_interface, signature=u"b",
959
def ApprovedByDefault_dbus_property(self, value=None):
960
if value is None: # get
961
return dbus.Boolean(self.approved_by_default)
962
self.approved_by_default = bool(value)
964
self.PropertyChanged(dbus.String(u"ApprovedByDefault"),
965
dbus.Boolean(value, variant_level=1))
967
# ApprovalDelay - property
968
@dbus_service_property(_interface, signature=u"t",
970
def ApprovalDelay_dbus_property(self, value=None):
971
if value is None: # get
972
return dbus.UInt64(self.approval_delay_milliseconds())
973
self.approval_delay = datetime.timedelta(0, 0, 0, value)
975
self.PropertyChanged(dbus.String(u"ApprovalDelay"),
976
dbus.UInt64(value, variant_level=1))
978
# ApprovalDuration - property
979
@dbus_service_property(_interface, signature=u"t",
981
def ApprovalDuration_dbus_property(self, value=None):
982
if value is None: # get
983
return dbus.UInt64(self._timedelta_to_milliseconds(
984
self.approval_duration))
985
self.approval_duration = datetime.timedelta(0, 0, 0, value)
987
self.PropertyChanged(dbus.String(u"ApprovalDuration"),
988
dbus.UInt64(value, variant_level=1))
846
991
@dbus_service_property(_interface, signature=u"s", access=u"read")
847
def name_dbus_property(self):
992
def Name_dbus_property(self):
848
993
return dbus.String(self.name)
850
# fingerprint - property
995
# Fingerprint - property
851
996
@dbus_service_property(_interface, signature=u"s", access=u"read")
852
def fingerprint_dbus_property(self):
997
def Fingerprint_dbus_property(self):
853
998
return dbus.String(self.fingerprint)
856
1001
@dbus_service_property(_interface, signature=u"s",
857
1002
access=u"readwrite")
858
def host_dbus_property(self, value=None):
1003
def Host_dbus_property(self, value=None):
859
1004
if value is None: # get
860
1005
return dbus.String(self.host)
861
1006
self.host = value
862
1007
# Emit D-Bus signal
863
self.PropertyChanged(dbus.String(u"host"),
1008
self.PropertyChanged(dbus.String(u"Host"),
864
1009
dbus.String(value, variant_level=1))
1011
# Created - property
867
1012
@dbus_service_property(_interface, signature=u"s", access=u"read")
868
def created_dbus_property(self):
1013
def Created_dbus_property(self):
869
1014
return dbus.String(self._datetime_to_dbus(self.created))
871
# last_enabled - property
1016
# LastEnabled - property
872
1017
@dbus_service_property(_interface, signature=u"s", access=u"read")
873
def last_enabled_dbus_property(self):
1018
def LastEnabled_dbus_property(self):
874
1019
if self.last_enabled is None:
875
1020
return dbus.String(u"")
876
1021
return dbus.String(self._datetime_to_dbus(self.last_enabled))
1023
# Enabled - property
879
1024
@dbus_service_property(_interface, signature=u"b",
880
1025
access=u"readwrite")
881
def enabled_dbus_property(self, value=None):
1026
def Enabled_dbus_property(self, value=None):
882
1027
if value is None: # get
883
1028
return dbus.Boolean(self.enabled)
898
1043
return dbus.String(self._datetime_to_dbus(self
899
1044
.last_checked_ok))
1046
# LastApprovalRequest - property
1047
@dbus_service_property(_interface, signature=u"s", access=u"read")
1048
def LastApprovalRequest_dbus_property(self):
1049
if self.last_approval_request is None:
1050
return dbus.String(u"")
1051
return dbus.String(self.
1052
_datetime_to_dbus(self
1053
.last_approval_request))
1055
# Timeout - property
902
1056
@dbus_service_property(_interface, signature=u"t",
903
1057
access=u"readwrite")
904
def timeout_dbus_property(self, value=None):
1058
def Timeout_dbus_property(self, value=None):
905
1059
if value is None: # get
906
1060
return dbus.UInt64(self.timeout_milliseconds())
907
1061
self.timeout = datetime.timedelta(0, 0, 0, value)
908
1062
# Emit D-Bus signal
909
self.PropertyChanged(dbus.String(u"timeout"),
1063
self.PropertyChanged(dbus.String(u"Timeout"),
910
1064
dbus.UInt64(value, variant_level=1))
911
1065
if getattr(self, u"disable_initiator_tag", None) is None:
926
1080
self.disable_initiator_tag = (gobject.timeout_add
927
1081
(time_to_die, self.disable))
929
# interval - property
1083
# Interval - property
930
1084
@dbus_service_property(_interface, signature=u"t",
931
1085
access=u"readwrite")
932
def interval_dbus_property(self, value=None):
1086
def Interval_dbus_property(self, value=None):
933
1087
if value is None: # get
934
1088
return dbus.UInt64(self.interval_milliseconds())
935
1089
self.interval = datetime.timedelta(0, 0, 0, value)
936
1090
# Emit D-Bus signal
937
self.PropertyChanged(dbus.String(u"interval"),
1091
self.PropertyChanged(dbus.String(u"Interval"),
938
1092
dbus.UInt64(value, variant_level=1))
939
1093
if getattr(self, u"checker_initiator_tag", None) is None:
944
1098
(value, self.start_checker))
945
1099
self.start_checker() # Start one now, too
1101
# Checker - property
948
1102
@dbus_service_property(_interface, signature=u"s",
949
1103
access=u"readwrite")
950
def checker_dbus_property(self, value=None):
1104
def Checker_dbus_property(self, value=None):
951
1105
if value is None: # get
952
1106
return dbus.String(self.checker_command)
953
1107
self.checker_command = value
954
1108
# Emit D-Bus signal
955
self.PropertyChanged(dbus.String(u"checker"),
1109
self.PropertyChanged(dbus.String(u"Checker"),
956
1110
dbus.String(self.checker_command,
957
1111
variant_level=1))
959
# checker_running - property
1113
# CheckerRunning - property
960
1114
@dbus_service_property(_interface, signature=u"b",
961
1115
access=u"readwrite")
962
def checker_running_dbus_property(self, value=None):
1116
def CheckerRunning_dbus_property(self, value=None):
963
1117
if value is None: # get
964
1118
return dbus.Boolean(self.checker is not None)
968
1122
self.stop_checker()
970
# object_path - property
1124
# ObjectPath - property
971
1125
@dbus_service_property(_interface, signature=u"o", access=u"read")
972
def object_path_dbus_property(self):
1126
def ObjectPath_dbus_property(self):
973
1127
return self.dbus_object_path # is already a dbus.ObjectPath
976
1130
@dbus_service_property(_interface, signature=u"ay",
977
1131
access=u"write", byte_arrays=True)
978
def secret_dbus_property(self, value):
1132
def Secret_dbus_property(self, value):
979
1133
self.secret = str(value)
1138
class ProxyClient(object):
1139
def __init__(self, child_pipe, fpr, address):
1140
self._pipe = child_pipe
1141
self._pipe.send(('init', fpr, address))
1142
if not self._pipe.recv():
1145
def __getattribute__(self, name):
1146
if(name == '_pipe'):
1147
return super(ProxyClient, self).__getattribute__(name)
1148
self._pipe.send(('getattr', name))
1149
data = self._pipe.recv()
1150
if data[0] == 'data':
1152
if data[0] == 'function':
1153
def func(*args, **kwargs):
1154
self._pipe.send(('funcall', name, args, kwargs))
1155
return self._pipe.recv()[1]
1158
def __setattr__(self, name, value):
1159
if(name == '_pipe'):
1160
return super(ProxyClient, self).__setattr__(name, value)
1161
self._pipe.send(('setattr', name, value))
984
1164
class ClientHandler(socketserver.BaseRequestHandler, object):
985
1165
"""A class to handle client connections.
988
1168
Note: This will run in its own forked process."""
990
1170
def handle(self):
991
logger.info(u"TCP connection from: %s",
992
unicode(self.client_address))
993
logger.debug(u"IPC Pipe FD: %d", self.server.pipe[1])
994
# Open IPC pipe to parent process
995
with closing(os.fdopen(self.server.pipe[1], u"w", 1)) as ipc:
1171
with contextlib.closing(self.server.child_pipe) as child_pipe:
1172
logger.info(u"TCP connection from: %s",
1173
unicode(self.client_address))
1174
logger.debug(u"Pipe FD: %d",
1175
self.server.child_pipe.fileno())
996
1177
session = (gnutls.connection
997
1178
.ClientSession(self.request,
998
1179
gnutls.connection
999
1180
.X509Credentials()))
1001
line = self.request.makefile().readline()
1002
logger.debug(u"Protocol version: %r", line)
1004
if int(line.strip().split()[0]) > 1:
1006
except (ValueError, IndexError, RuntimeError), error:
1007
logger.error(u"Unknown protocol version: %s", error)
1010
1182
# Note: gnutls.connection.X509Credentials is really a
1011
1183
# generic GnuTLS certificate credentials object so long as
1012
1184
# no X.509 keys are added to it. Therefore, we can use it
1013
1185
# here despite using OpenPGP certificates.
1015
1187
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1016
1188
# u"+AES-256-CBC", u"+SHA1",
1017
1189
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1023
1195
(gnutls.library.functions
1024
1196
.gnutls_priority_set_direct(session._c_object,
1025
1197
priority, None))
1199
# Start communication using the Mandos protocol
1200
# Get protocol number
1201
line = self.request.makefile().readline()
1202
logger.debug(u"Protocol version: %r", line)
1204
if int(line.strip().split()[0]) > 1:
1206
except (ValueError, IndexError, RuntimeError), error:
1207
logger.error(u"Unknown protocol version: %s", error)
1210
# Start GnuTLS connection
1028
1212
session.handshake()
1029
1213
except gnutls.errors.GNUTLSError, error:
1032
1216
# established. Just abandon the request.
1034
1218
logger.debug(u"Handshake succeeded")
1220
approval_required = False
1036
fpr = self.fingerprint(self.peer_certificate(session))
1037
except (TypeError, gnutls.errors.GNUTLSError), error:
1038
logger.warning(u"Bad certificate: %s", error)
1041
logger.debug(u"Fingerprint: %s", fpr)
1223
fpr = self.fingerprint(self.peer_certificate
1225
except (TypeError, gnutls.errors.GNUTLSError), error:
1226
logger.warning(u"Bad certificate: %s", error)
1228
logger.debug(u"Fingerprint: %s", fpr)
1231
client = ProxyClient(child_pipe, fpr,
1232
self.client_address)
1236
if client.approval_delay:
1237
delay = client.approval_delay
1238
client.approvals_pending += 1
1239
approval_required = True
1242
if not client.enabled:
1243
logger.warning(u"Client %s is disabled",
1245
if self.server.use_dbus:
1247
client.Rejected("Disabled")
1250
if client._approved or not client.approval_delay:
1251
#We are approved or approval is disabled
1253
elif client._approved is None:
1254
logger.info(u"Client %s needs approval",
1256
if self.server.use_dbus:
1258
client.NeedApproval(
1259
client.approval_delay_milliseconds(),
1260
client.approved_by_default)
1262
logger.warning(u"Client %s was not approved",
1264
if self.server.use_dbus:
1266
client.Rejected("Denied")
1269
#wait until timeout or approved
1270
#x = float(client._timedelta_to_milliseconds(delay))
1271
time = datetime.datetime.now()
1272
client.changedstate.acquire()
1273
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
1274
client.changedstate.release()
1275
time2 = datetime.datetime.now()
1276
if (time2 - time) >= delay:
1277
if not client.approved_by_default:
1278
logger.warning("Client %s timed out while"
1279
" waiting for approval",
1281
if self.server.use_dbus:
1283
client.Rejected("Approval timed out")
1288
delay -= time2 - time
1291
while sent_size < len(client.secret):
1293
sent = session.send(client.secret[sent_size:])
1294
except (gnutls.errors.GNUTLSError), error:
1295
logger.warning("gnutls send failed")
1297
logger.debug(u"Sent: %d, remaining: %d",
1298
sent, len(client.secret)
1299
- (sent_size + sent))
1302
logger.info(u"Sending secret to %s", client.name)
1303
# bump the timeout as if seen
1305
if self.server.use_dbus:
1043
for c in self.server.clients:
1044
if c.fingerprint == fpr:
1048
ipc.write(u"NOTFOUND %s %s\n"
1049
% (fpr, unicode(self.client_address)))
1052
# Have to check if client.still_valid(), since it is
1053
# possible that the client timed out while establishing
1054
# the GnuTLS session.
1055
if not client.still_valid():
1056
ipc.write(u"INVALID %s\n" % client.name)
1059
ipc.write(u"SENDING %s\n" % client.name)
1061
while sent_size < len(client.secret):
1062
sent = session.send(client.secret[sent_size:])
1063
logger.debug(u"Sent: %d, remaining: %d",
1064
sent, len(client.secret)
1065
- (sent_size + sent))
1310
if approval_required:
1311
client.approvals_pending -= 1
1314
except (gnutls.errors.GNUTLSError), error:
1315
logger.warning("GnuTLS bye failed")
1070
1318
def peer_certificate(session):
1133
class ForkingMixInWithPipe(socketserver.ForkingMixIn, object):
1134
"""Like socketserver.ForkingMixIn, but also pass a pipe."""
1381
class MultiprocessingMixIn(object):
1382
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
1383
def sub_process_main(self, request, address):
1385
self.finish_request(request, address)
1387
self.handle_error(request, address)
1388
self.close_request(request)
1390
def process_request(self, request, address):
1391
"""Start a new process to process the request."""
1392
multiprocessing.Process(target = self.sub_process_main,
1393
args = (request, address)).start()
1395
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1396
""" adds a pipe to the MixIn """
1135
1397
def process_request(self, request, client_address):
1136
1398
"""Overrides and wraps the original process_request().
1138
1400
This function creates a new pipe in self.pipe
1140
self.pipe = os.pipe()
1141
super(ForkingMixInWithPipe,
1402
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1404
super(MultiprocessingMixInWithPipe,
1142
1405
self).process_request(request, client_address)
1143
os.close(self.pipe[1]) # close write end
1144
self.add_pipe(self.pipe[0])
1145
def add_pipe(self, pipe):
1406
self.child_pipe.close()
1407
self.add_pipe(parent_pipe)
1409
def add_pipe(self, parent_pipe):
1146
1410
"""Dummy function; override as necessary"""
1150
class IPv6_TCPServer(ForkingMixInWithPipe,
1413
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1151
1414
socketserver.TCPServer, object):
1152
1415
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1238
1501
return socketserver.TCPServer.server_activate(self)
1239
1502
def enable(self):
1240
1503
self.enabled = True
1241
def add_pipe(self, pipe):
1504
def add_pipe(self, parent_pipe):
1242
1505
# Call "handle_ipc" for both data and EOF events
1243
gobject.io_add_watch(pipe, gobject.IO_IN | gobject.IO_HUP,
1245
def handle_ipc(self, source, condition, file_objects={}):
1506
gobject.io_add_watch(parent_pipe.fileno(),
1507
gobject.IO_IN | gobject.IO_HUP,
1508
functools.partial(self.handle_ipc,
1509
parent_pipe = parent_pipe))
1511
def handle_ipc(self, source, condition, parent_pipe=None,
1512
client_object=None):
1246
1513
condition_names = {
1247
1514
gobject.IO_IN: u"IN", # There is data to read.
1248
1515
gobject.IO_OUT: u"OUT", # Data can be written (without
1257
1524
for cond, name in
1258
1525
condition_names.iteritems()
1259
1526
if cond & condition)
1260
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1263
# Turn the pipe file descriptor into a Python file object
1264
if source not in file_objects:
1265
file_objects[source] = os.fdopen(source, u"r", 1)
1267
# Read a line from the file object
1268
cmdline = file_objects[source].readline()
1269
if not cmdline: # Empty line means end of file
1270
# close the IPC pipe
1271
file_objects[source].close()
1272
del file_objects[source]
1274
# Stop calling this function
1277
logger.debug(u"IPC command: %r", cmdline)
1279
# Parse and act on command
1280
cmd, args = cmdline.rstrip(u"\r\n").split(None, 1)
1282
if cmd == u"NOTFOUND":
1283
fpr, address = args.split(None, 1)
1284
logger.warning(u"Client not found for fingerprint: %s, ad"
1285
u"dress: %s", fpr, address)
1288
mandos_dbus_service.ClientNotFound(fpr, address)
1289
elif cmd == u"INVALID":
1290
for client in self.clients:
1291
if client.name == args:
1292
logger.warning(u"Client %s is invalid", args)
1298
logger.error(u"Unknown client %s is invalid", args)
1299
elif cmd == u"SENDING":
1300
for client in self.clients:
1301
if client.name == args:
1302
logger.info(u"Sending secret to %s", client.name)
1309
logger.error(u"Sending secret to unknown client %s",
1312
logger.error(u"Unknown IPC command: %r", cmdline)
1314
# Keep calling this function
1527
# error or the other end of multiprocessing.Pipe has closed
1528
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
1531
# Read a request from the child
1532
request = parent_pipe.recv()
1533
command = request[0]
1535
if command == 'init':
1537
address = request[2]
1539
for c in self.clients:
1540
if c.fingerprint == fpr:
1544
logger.warning(u"Client not found for fingerprint: %s, ad"
1545
u"dress: %s", fpr, address)
1548
mandos_dbus_service.ClientNotFound(fpr, address[0])
1549
parent_pipe.send(False)
1552
gobject.io_add_watch(parent_pipe.fileno(),
1553
gobject.IO_IN | gobject.IO_HUP,
1554
functools.partial(self.handle_ipc,
1555
parent_pipe = parent_pipe,
1556
client_object = client))
1557
parent_pipe.send(True)
1558
# remove the old hook in favor of the new above hook on same fileno
1560
if command == 'funcall':
1561
funcname = request[1]
1565
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
1567
if command == 'getattr':
1568
attrname = request[1]
1569
if callable(client_object.__getattribute__(attrname)):
1570
parent_pipe.send(('function',))
1572
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
1574
if command == 'setattr':
1575
attrname = request[1]
1577
setattr(client_object, attrname, value)
1516
1782
tcp_server = MandosServer((server_settings[u"address"],
1517
1783
server_settings[u"port"]),
1519
interface=server_settings[u"interface"],
1785
interface=(server_settings[u"interface"]
1520
1787
use_ipv6=use_ipv6,
1521
1788
gnutls_priority=
1522
1789
server_settings[u"priority"],
1523
1790
use_dbus=use_dbus)
1524
pidfilename = u"/var/run/mandos.pid"
1526
pidfile = open(pidfilename, u"w")
1528
logger.error(u"Could not open file %r", pidfilename)
1792
pidfilename = u"/var/run/mandos.pid"
1794
pidfile = open(pidfilename, u"w")
1796
logger.error(u"Could not open file %r", pidfilename)
1531
1799
uid = pwd.getpwnam(u"_mandos").pw_uid
1583
1870
if server_settings["interface"]:
1584
1871
service.interface = (if_nametoindex
1585
1872
(str(server_settings[u"interface"])))
1875
# Close all input and output, do double fork, etc.
1878
global multiprocessing_manager
1879
multiprocessing_manager = multiprocessing.Manager()
1587
1881
client_class = Client
1589
1883
client_class = functools.partial(ClientDBus, bus = bus)
1884
def client_config_items(config, section):
1885
special_settings = {
1886
"approved_by_default":
1887
lambda: config.getboolean(section,
1888
"approved_by_default"),
1890
for name, value in config.items(section):
1892
yield (name, special_settings[name]())
1590
1896
tcp_server.clients.update(set(
1591
1897
client_class(name = section,
1592
config= dict(client_config.items(section)))
1898
config= dict(client_config_items(
1899
client_config, section)))
1593
1900
for section in client_config.sections()))
1594
1901
if not tcp_server.clients:
1595
1902
logger.warning(u"No clients defined")
1598
# Redirect stdin so all checkers get /dev/null
1599
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1600
os.dup2(null, sys.stdin.fileno())
1604
# No console logging
1605
logger.removeHandler(console)
1606
# Close all input and output, do double fork, etc.
1610
with closing(pidfile):
1612
pidfile.write(str(pid) + "\n")
1615
logger.error(u"Could not write to file %r with PID %d",
1618
# "pidfile" was never created
1908
pidfile.write(str(pid) + "\n")
1911
logger.error(u"Could not write to file %r with PID %d",
1914
# "pidfile" was never created
1623
1918
signal.signal(signal.SIGINT, signal.SIG_IGN)
1624
1920
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1625
1921
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())