104
126
max_renames: integer; maximum number of renames
105
127
rename_count: integer; counter so we only rename after collisions
106
128
a sensible number of times
129
group: D-Bus Entry Group
131
bus: dbus.SystemBus()
108
133
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
109
type = None, port = None, TXT = None, domain = "",
110
host = "", max_renames = 32768):
134
servicetype = None, port = None, TXT = None,
135
domain = u"", host = u"", max_renames = 32768,
136
protocol = avahi.PROTO_UNSPEC, bus = None):
111
137
self.interface = interface
139
self.type = servicetype
141
self.TXT = TXT if TXT is not None else []
119
142
self.domain = domain
121
144
self.rename_count = 0
145
self.max_renames = max_renames
146
self.protocol = protocol
147
self.group = None # our entry group
122
150
def rename(self):
123
151
"""Derived from the Avahi example code"""
124
152
if self.rename_count >= self.max_renames:
125
logger.critical(u"No suitable service name found after %i"
126
u" retries, exiting.", rename_count)
127
raise AvahiServiceError("Too many renames")
128
name = server.GetAlternativeServiceName(name)
129
logger.error(u"Changing name to %r ...", name)
130
syslogger.setFormatter(logging.Formatter\
131
('Mandos (%s): %%(levelname)s:'
132
' %%(message)s' % name))
153
logger.critical(u"No suitable Zeroconf service name found"
154
u" after %i retries, exiting.",
156
raise AvahiServiceError(u"Too many renames")
157
self.name = self.server.GetAlternativeServiceName(self.name)
158
logger.info(u"Changing Zeroconf service name to %r ...",
160
syslogger.setFormatter(logging.Formatter
161
(u'Mandos (%s) [%%(process)d]:'
162
u' %%(levelname)s: %%(message)s'
135
166
self.rename_count += 1
136
167
def remove(self):
137
168
"""Derived from the Avahi example code"""
138
if group is not None:
169
if self.group is not None:
141
172
"""Derived from the Avahi example code"""
144
group = dbus.Interface\
145
(bus.get_object(avahi.DBUS_NAME,
146
server.EntryGroupNew()),
147
avahi.DBUS_INTERFACE_ENTRY_GROUP)
148
group.connect_to_signal('StateChanged',
149
entry_group_state_changed)
150
logger.debug(u"Adding service '%s' of type '%s' ...",
151
service.name, service.type)
153
self.interface, # interface
154
avahi.PROTO_INET6, # protocol
155
dbus.UInt32(0), # flags
156
self.name, self.type,
157
self.domain, self.host,
158
dbus.UInt16(self.port),
159
avahi.string_array_to_txt_array(self.TXT))
162
# From the Avahi example code:
163
group = None # our entry group
164
# End of Avahi example code
173
if self.group is None:
174
self.group = dbus.Interface(
175
self.bus.get_object(avahi.DBUS_NAME,
176
self.server.EntryGroupNew()),
177
avahi.DBUS_INTERFACE_ENTRY_GROUP)
178
self.group.connect_to_signal('StateChanged',
180
.entry_group_state_changed)
181
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
182
self.name, self.type)
183
self.group.AddService(
186
dbus.UInt32(0), # flags
187
self.name, self.type,
188
self.domain, self.host,
189
dbus.UInt16(self.port),
190
avahi.string_array_to_txt_array(self.TXT))
192
def entry_group_state_changed(self, state, error):
193
"""Derived from the Avahi example code"""
194
logger.debug(u"Avahi state change: %i", state)
196
if state == avahi.ENTRY_GROUP_ESTABLISHED:
197
logger.debug(u"Zeroconf service established.")
198
elif state == avahi.ENTRY_GROUP_COLLISION:
199
logger.warning(u"Zeroconf service name collision.")
201
elif state == avahi.ENTRY_GROUP_FAILURE:
202
logger.critical(u"Avahi: Error in group state changed %s",
204
raise AvahiGroupError(u"State changed: %s"
207
"""Derived from the Avahi example code"""
208
if self.group is not None:
211
def server_state_changed(self, state):
212
"""Derived from the Avahi example code"""
213
if state == avahi.SERVER_COLLISION:
214
logger.error(u"Zeroconf server name collision")
216
elif state == avahi.SERVER_RUNNING:
219
"""Derived from the Avahi example code"""
220
if self.server is None:
221
self.server = dbus.Interface(
222
self.bus.get_object(avahi.DBUS_NAME,
223
avahi.DBUS_PATH_SERVER),
224
avahi.DBUS_INTERFACE_SERVER)
225
self.server.connect_to_signal(u"StateChanged",
226
self.server_state_changed)
227
self.server_state_changed(self.server.GetState())
167
230
class Client(object):
168
231
"""A representation of a client host served by this server.
170
name: string; from the config file, used in log messages
234
name: string; from the config file, used in log messages and
171
236
fingerprint: string (40 or 32 hexadecimal digits); used to
172
237
uniquely identify the client
173
secret: bytestring; sent verbatim (over TLS) to client
174
host: string; available for use by the checker command
175
created: datetime.datetime(); object creation, not client host
176
last_checked_ok: datetime.datetime() or None if not yet checked OK
177
timeout: datetime.timedelta(); How long from last_checked_ok
178
until this client is invalid
179
interval: datetime.timedelta(); How often to start a new checker
180
stop_hook: If set, called by stop() as stop_hook(self)
181
checker: subprocess.Popen(); a running checker process used
182
to see if the client lives.
183
'None' if no process is running.
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)
248
checker: subprocess.Popen(); a running checker process used
249
to see if the client lives.
250
'None' if no process is running.
184
251
checker_initiator_tag: a gobject event source tag, or None
185
stop_initiator_tag: - '' -
252
disable_initiator_tag: - '' -
186
253
checker_callback_tag: - '' -
187
254
checker_command: string; External command which is run to check if
188
255
client lives. %() expansions are done at
189
256
runtime with vars(self) as dict, so that for
190
257
instance %(name)s can be used in the command.
192
_timeout: Real variable for 'timeout'
193
_interval: Real variable for 'interval'
194
_timeout_milliseconds: Used when calling gobject.timeout_add()
195
_interval_milliseconds: - '' -
258
current_checker_command: string; current running checker_command
197
def _set_timeout(self, timeout):
198
"Setter function for 'timeout' attribute"
199
self._timeout = timeout
200
self._timeout_milliseconds = ((self.timeout.days
201
* 24 * 60 * 60 * 1000)
202
+ (self.timeout.seconds * 1000)
203
+ (self.timeout.microseconds
205
timeout = property(lambda self: self._timeout,
208
def _set_interval(self, interval):
209
"Setter function for 'interval' attribute"
210
self._interval = interval
211
self._interval_milliseconds = ((self.interval.days
212
* 24 * 60 * 60 * 1000)
213
+ (self.interval.seconds
215
+ (self.interval.microseconds
217
interval = property(lambda self: self._interval,
220
def __init__(self, name = None, stop_hook=None, config={}):
262
def _timedelta_to_milliseconds(td):
263
"Convert a datetime.timedelta() to milliseconds"
264
return ((td.days * 24 * 60 * 60 * 1000)
265
+ (td.seconds * 1000)
266
+ (td.microseconds // 1000))
268
def timeout_milliseconds(self):
269
"Return the 'timeout' attribute in milliseconds"
270
return self._timedelta_to_milliseconds(self.timeout)
272
def interval_milliseconds(self):
273
"Return the 'interval' attribute in milliseconds"
274
return self._timedelta_to_milliseconds(self.interval)
276
def __init__(self, name = None, disable_hook=None, config=None):
221
277
"""Note: the 'checker' key in 'config' sets the
222
278
'checker_command' attribute and *not* the 'checker'
225
283
logger.debug(u"Creating client %r", self.name)
226
284
# Uppercase and remove spaces from fingerprint for later
227
285
# comparison purposes with return value from the fingerprint()
229
self.fingerprint = config["fingerprint"].upper()\
287
self.fingerprint = (config[u"fingerprint"].upper()
231
289
logger.debug(u" Fingerprint: %s", self.fingerprint)
232
if "secret" in config:
233
self.secret = config["secret"].decode(u"base64")
234
elif "secfile" in config:
235
sf = open(config["secfile"])
236
self.secret = sf.read()
290
if u"secret" in config:
291
self.secret = config[u"secret"].decode(u"base64")
292
elif u"secfile" in config:
293
with closing(open(os.path.expanduser
295
(config[u"secfile"])),
297
self.secret = secfile.read()
239
299
raise TypeError(u"No secret or secfile for client %s"
241
self.host = config.get("host", "")
242
self.created = datetime.datetime.now()
301
self.host = config.get(u"host", u"")
302
self.created = datetime.datetime.utcnow()
304
self.last_enabled = None
243
305
self.last_checked_ok = None
244
self.timeout = string_to_delta(config["timeout"])
245
self.interval = string_to_delta(config["interval"])
246
self.stop_hook = stop_hook
306
self.timeout = string_to_delta(config[u"timeout"])
307
self.interval = string_to_delta(config[u"interval"])
308
self.disable_hook = disable_hook
247
309
self.checker = None
248
310
self.checker_initiator_tag = None
249
self.stop_initiator_tag = None
311
self.disable_initiator_tag = None
250
312
self.checker_callback_tag = None
251
self.check_command = config["checker"]
313
self.checker_command = config[u"checker"]
314
self.current_checker_command = None
315
self.last_connect = None
253
318
"""Start this client's checker and timeout hooks"""
319
if getattr(self, u"enabled", False):
322
self.last_enabled = datetime.datetime.utcnow()
254
323
# Schedule a new checker to be started an 'interval' from now,
255
324
# and every interval from then on.
256
self.checker_initiator_tag = gobject.timeout_add\
257
(self._interval_milliseconds,
325
self.checker_initiator_tag = (gobject.timeout_add
326
(self.interval_milliseconds(),
259
328
# Also start a new checker *right now*.
260
329
self.start_checker()
261
# Schedule a stop() when 'timeout' has passed
262
self.stop_initiator_tag = gobject.timeout_add\
263
(self._timeout_milliseconds,
267
The possibility that a client might be restarted is left open,
268
but not currently used."""
269
# If this client doesn't have a secret, it is already stopped.
270
if hasattr(self, "secret") and self.secret:
271
logger.info(u"Stopping client %s", self.name)
330
# Schedule a disable() when 'timeout' has passed
331
self.disable_initiator_tag = (gobject.timeout_add
332
(self.timeout_milliseconds(),
337
"""Disable this client."""
338
if not getattr(self, "enabled", False):
275
if getattr(self, "stop_initiator_tag", False):
276
gobject.source_remove(self.stop_initiator_tag)
277
self.stop_initiator_tag = None
278
if getattr(self, "checker_initiator_tag", False):
340
logger.info(u"Disabling client %s", self.name)
341
if getattr(self, u"disable_initiator_tag", False):
342
gobject.source_remove(self.disable_initiator_tag)
343
self.disable_initiator_tag = None
344
if getattr(self, u"checker_initiator_tag", False):
279
345
gobject.source_remove(self.checker_initiator_tag)
280
346
self.checker_initiator_tag = None
281
347
self.stop_checker()
348
if self.disable_hook:
349
self.disable_hook(self)
284
351
# Do not run this again if called by a gobject.timeout_add
286
354
def __del__(self):
287
self.stop_hook = None
289
def checker_callback(self, pid, condition):
355
self.disable_hook = None
358
def checker_callback(self, pid, condition, command):
290
359
"""The checker has completed, so take appropriate actions."""
291
now = datetime.datetime.now()
292
360
self.checker_callback_tag = None
293
361
self.checker = None
294
if os.WIFEXITED(condition) \
295
and (os.WEXITSTATUS(condition) == 0):
296
logger.info(u"Checker for %(name)s succeeded",
298
self.last_checked_ok = now
299
gobject.source_remove(self.stop_initiator_tag)
300
self.stop_initiator_tag = gobject.timeout_add\
301
(self._timeout_milliseconds,
303
elif not os.WIFEXITED(condition):
362
if os.WIFEXITED(condition):
363
exitstatus = os.WEXITSTATUS(condition)
365
logger.info(u"Checker for %(name)s succeeded",
369
logger.info(u"Checker for %(name)s failed",
304
372
logger.warning(u"Checker for %(name)s crashed?",
307
logger.info(u"Checker for %(name)s failed",
375
def checked_ok(self):
376
"""Bump up the timeout for this client.
378
This should only be called when the client has been seen,
381
self.last_checked_ok = datetime.datetime.utcnow()
382
gobject.source_remove(self.disable_initiator_tag)
383
self.disable_initiator_tag = (gobject.timeout_add
384
(self.timeout_milliseconds(),
309
387
def start_checker(self):
310
388
"""Start a new checker subprocess if one is not running.
311
390
If a checker already exists, leave it running and do
313
392
# The reason for not killing a running checker is that if we
364
474
if error.errno != errno.ESRCH: # No such process
366
476
self.checker = None
367
478
def still_valid(self):
368
479
"""Has the timeout not yet passed for this client?"""
369
now = datetime.datetime.now()
480
if not getattr(self, u"enabled", False):
482
now = datetime.datetime.utcnow()
370
483
if self.last_checked_ok is None:
371
484
return now < (self.created + self.timeout)
373
486
return now < (self.last_checked_ok + self.timeout)
376
def peer_certificate(session):
377
"Return the peer's OpenPGP certificate as a bytestring"
378
# If not an OpenPGP certificate...
379
if gnutls.library.functions.gnutls_certificate_type_get\
380
(session._c_object) \
381
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP:
382
# ...do the normal thing
383
return session.peer_certificate
384
list_size = ctypes.c_uint()
385
cert_list = gnutls.library.functions.gnutls_certificate_get_peers\
386
(session._c_object, ctypes.byref(list_size))
387
if list_size.value == 0:
390
return ctypes.string_at(cert.data, cert.size)
393
def fingerprint(openpgp):
394
"Convert an OpenPGP bytestring to a hexdigit fingerprint string"
395
# New GnuTLS "datum" with the OpenPGP public key
396
datum = gnutls.library.types.gnutls_datum_t\
397
(ctypes.cast(ctypes.c_char_p(openpgp),
398
ctypes.POINTER(ctypes.c_ubyte)),
399
ctypes.c_uint(len(openpgp)))
400
# New empty GnuTLS certificate
401
crt = gnutls.library.types.gnutls_openpgp_crt_t()
402
gnutls.library.functions.gnutls_openpgp_crt_init\
404
# Import the OpenPGP public key into the certificate
405
gnutls.library.functions.gnutls_openpgp_crt_import\
406
(crt, ctypes.byref(datum),
407
gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)
408
# New buffer for the fingerprint
409
buffer = ctypes.create_string_buffer(20)
410
buffer_length = ctypes.c_size_t()
411
# Get the fingerprint from the certificate into the buffer
412
gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint\
413
(crt, ctypes.byref(buffer), ctypes.byref(buffer_length))
414
# Deinit the certificate
415
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
416
# Convert the buffer to a Python bytestring
417
fpr = ctypes.string_at(buffer, buffer_length.value)
418
# Convert the bytestring to hexadecimal notation
419
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
423
class tcp_handler(SocketServer.BaseRequestHandler, object):
424
"""A TCP request handler class.
425
Instantiated by IPv6_TCPServer for each request to handle it.
489
def dbus_service_property(dbus_interface, signature=u"v",
490
access=u"readwrite", byte_arrays=False):
491
"""Decorators for marking methods of a DBusObjectWithProperties to
492
become properties on the D-Bus.
494
The decorated method will be called with no arguments by "Get"
495
and with one argument by "Set".
497
The parameters, where they are supported, are the same as
498
dbus.service.method, except there is only "signature", since the
499
type from Get() and the type sent to Set() is the same.
502
func._dbus_is_property = True
503
func._dbus_interface = dbus_interface
504
func._dbus_signature = signature
505
func._dbus_access = access
506
func._dbus_name = func.__name__
507
if func._dbus_name.endswith(u"_dbus_property"):
508
func._dbus_name = func._dbus_name[:-14]
509
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
514
class DBusPropertyException(dbus.exceptions.DBusException):
515
"""A base class for D-Bus property-related exceptions
517
def __unicode__(self):
518
return unicode(str(self))
521
class DBusPropertyAccessException(DBusPropertyException):
522
"""A property's access permissions disallows an operation.
527
class DBusPropertyNotFound(DBusPropertyException):
528
"""An attempt was made to access a non-existing property.
533
class DBusObjectWithProperties(dbus.service.Object):
534
"""A D-Bus object with properties.
536
Classes inheriting from this can use the dbus_service_property
537
decorator to expose methods as D-Bus properties. It exposes the
538
standard Get(), Set(), and GetAll() methods on the D-Bus.
542
def _is_dbus_property(obj):
543
return getattr(obj, u"_dbus_is_property", False)
545
def _get_all_dbus_properties(self):
546
"""Returns a generator of (name, attribute) pairs
548
return ((prop._dbus_name, prop)
550
inspect.getmembers(self, self._is_dbus_property))
552
def _get_dbus_property(self, interface_name, property_name):
553
"""Returns a bound method if one exists which is a D-Bus
554
property with the specified name and interface.
556
for name in (property_name,
557
property_name + u"_dbus_property"):
558
prop = getattr(self, name, None)
560
or not self._is_dbus_property(prop)
561
or prop._dbus_name != property_name
562
or (interface_name and prop._dbus_interface
563
and interface_name != prop._dbus_interface)):
567
raise DBusPropertyNotFound(self.dbus_object_path + u":"
568
+ interface_name + u"."
571
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
573
def Get(self, interface_name, property_name):
574
"""Standard D-Bus property Get() method, see D-Bus standard.
576
prop = self._get_dbus_property(interface_name, property_name)
577
if prop._dbus_access == u"write":
578
raise DBusPropertyAccessException(property_name)
580
if not hasattr(value, u"variant_level"):
582
return type(value)(value, variant_level=value.variant_level+1)
584
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
585
def Set(self, interface_name, property_name, value):
586
"""Standard D-Bus property Set() method, see D-Bus standard.
588
prop = self._get_dbus_property(interface_name, property_name)
589
if prop._dbus_access == u"read":
590
raise DBusPropertyAccessException(property_name)
591
if prop._dbus_get_args_options[u"byte_arrays"]:
592
value = dbus.ByteArray(''.join(unichr(byte)
596
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
597
out_signature=u"a{sv}")
598
def GetAll(self, interface_name):
599
"""Standard D-Bus property GetAll() method, see D-Bus
602
Note: Will not include properties with access="write".
605
for name, prop in self._get_all_dbus_properties():
607
and interface_name != prop._dbus_interface):
608
# Interface non-empty but did not match
610
# Ignore write-only properties
611
if prop._dbus_access == u"write":
614
if not hasattr(value, u"variant_level"):
617
all[name] = type(value)(value, variant_level=
618
value.variant_level+1)
619
return dbus.Dictionary(all, signature=u"sv")
621
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
623
path_keyword='object_path',
624
connection_keyword='connection')
625
def Introspect(self, object_path, connection):
626
"""Standard D-Bus method, overloaded to insert property tags.
628
xmlstring = dbus.service.Object.Introspect(self, object_path,
631
document = xml.dom.minidom.parseString(xmlstring)
632
def make_tag(document, name, prop):
633
e = document.createElement(u"property")
634
e.setAttribute(u"name", name)
635
e.setAttribute(u"type", prop._dbus_signature)
636
e.setAttribute(u"access", prop._dbus_access)
638
for if_tag in document.getElementsByTagName(u"interface"):
639
for tag in (make_tag(document, name, prop)
641
in self._get_all_dbus_properties()
642
if prop._dbus_interface
643
== if_tag.getAttribute(u"name")):
644
if_tag.appendChild(tag)
645
# Add the names to the return values for the
646
# "org.freedesktop.DBus.Properties" methods
647
if (if_tag.getAttribute(u"name")
648
== u"org.freedesktop.DBus.Properties"):
649
for cn in if_tag.getElementsByTagName(u"method"):
650
if cn.getAttribute(u"name") == u"Get":
651
for arg in cn.getElementsByTagName(u"arg"):
652
if (arg.getAttribute(u"direction")
654
arg.setAttribute(u"name", u"value")
655
elif cn.getAttribute(u"name") == u"GetAll":
656
for arg in cn.getElementsByTagName(u"arg"):
657
if (arg.getAttribute(u"direction")
659
arg.setAttribute(u"name", u"props")
660
xmlstring = document.toxml(u"utf-8")
662
except (AttributeError, xml.dom.DOMException,
663
xml.parsers.expat.ExpatError), error:
664
logger.error(u"Failed to override Introspection method",
669
class ClientDBus(Client, DBusObjectWithProperties):
670
"""A Client class using D-Bus
673
dbus_object_path: dbus.ObjectPath
674
bus: dbus.SystemBus()
676
# dbus.service.Object doesn't use super(), so we can't either.
678
def __init__(self, bus = None, *args, **kwargs):
680
Client.__init__(self, *args, **kwargs)
681
# Only now, when this client is initialized, can it show up on
683
self.dbus_object_path = (dbus.ObjectPath
685
+ self.name.replace(u".", u"_")))
686
DBusObjectWithProperties.__init__(self, self.bus,
687
self.dbus_object_path)
690
def _datetime_to_dbus(dt, variant_level=0):
691
"""Convert a UTC datetime.datetime() to a D-Bus type."""
692
return dbus.String(dt.isoformat(),
693
variant_level=variant_level)
696
oldstate = getattr(self, u"enabled", False)
697
r = Client.enable(self)
698
if oldstate != self.enabled:
700
self.PropertyChanged(dbus.String(u"enabled"),
701
dbus.Boolean(True, variant_level=1))
702
self.PropertyChanged(
703
dbus.String(u"last_enabled"),
704
self._datetime_to_dbus(self.last_enabled,
708
def disable(self, signal = True):
709
oldstate = getattr(self, u"enabled", False)
710
r = Client.disable(self)
711
if signal and oldstate != self.enabled:
713
self.PropertyChanged(dbus.String(u"enabled"),
714
dbus.Boolean(False, variant_level=1))
717
def __del__(self, *args, **kwargs):
719
self.remove_from_connection()
722
if hasattr(DBusObjectWithProperties, u"__del__"):
723
DBusObjectWithProperties.__del__(self, *args, **kwargs)
724
Client.__del__(self, *args, **kwargs)
726
def checker_callback(self, pid, condition, command,
728
self.checker_callback_tag = None
731
self.PropertyChanged(dbus.String(u"checker_running"),
732
dbus.Boolean(False, variant_level=1))
733
if os.WIFEXITED(condition):
734
exitstatus = os.WEXITSTATUS(condition)
736
self.CheckerCompleted(dbus.Int16(exitstatus),
737
dbus.Int64(condition),
738
dbus.String(command))
741
self.CheckerCompleted(dbus.Int16(-1),
742
dbus.Int64(condition),
743
dbus.String(command))
745
return Client.checker_callback(self, pid, condition, command,
748
def checked_ok(self, *args, **kwargs):
749
r = Client.checked_ok(self, *args, **kwargs)
751
self.PropertyChanged(
752
dbus.String(u"last_checked_ok"),
753
(self._datetime_to_dbus(self.last_checked_ok,
757
def start_checker(self, *args, **kwargs):
758
old_checker = self.checker
759
if self.checker is not None:
760
old_checker_pid = self.checker.pid
762
old_checker_pid = None
763
r = Client.start_checker(self, *args, **kwargs)
764
# Only if new checker process was started
765
if (self.checker is not None
766
and old_checker_pid != self.checker.pid):
768
self.CheckerStarted(self.current_checker_command)
769
self.PropertyChanged(
770
dbus.String(u"checker_running"),
771
dbus.Boolean(True, variant_level=1))
774
def stop_checker(self, *args, **kwargs):
775
old_checker = getattr(self, u"checker", None)
776
r = Client.stop_checker(self, *args, **kwargs)
777
if (old_checker is not None
778
and getattr(self, u"checker", None) is None):
779
self.PropertyChanged(dbus.String(u"checker_running"),
780
dbus.Boolean(False, variant_level=1))
783
## D-Bus methods & signals
784
_interface = u"se.bsnet.fukt.Mandos.Client"
787
@dbus.service.method(_interface)
789
return self.checked_ok()
791
# CheckerCompleted - signal
792
@dbus.service.signal(_interface, signature=u"nxs")
793
def CheckerCompleted(self, exitcode, waitstatus, command):
797
# CheckerStarted - signal
798
@dbus.service.signal(_interface, signature=u"s")
799
def CheckerStarted(self, command):
803
# PropertyChanged - signal
804
@dbus.service.signal(_interface, signature=u"sv")
805
def PropertyChanged(self, property, value):
810
@dbus.service.signal(_interface)
816
@dbus.service.signal(_interface)
822
@dbus.service.method(_interface)
827
# StartChecker - method
828
@dbus.service.method(_interface)
829
def StartChecker(self):
834
@dbus.service.method(_interface)
839
# StopChecker - method
840
@dbus.service.method(_interface)
841
def StopChecker(self):
845
@dbus_service_property(_interface, signature=u"s", access=u"read")
846
def name_dbus_property(self):
847
return dbus.String(self.name)
849
# fingerprint - property
850
@dbus_service_property(_interface, signature=u"s", access=u"read")
851
def fingerprint_dbus_property(self):
852
return dbus.String(self.fingerprint)
855
@dbus_service_property(_interface, signature=u"s",
857
def host_dbus_property(self, value=None):
858
if value is None: # get
859
return dbus.String(self.host)
862
self.PropertyChanged(dbus.String(u"host"),
863
dbus.String(value, variant_level=1))
866
@dbus_service_property(_interface, signature=u"s", access=u"read")
867
def created_dbus_property(self):
868
return dbus.String(self._datetime_to_dbus(self.created))
870
# last_enabled - property
871
@dbus_service_property(_interface, signature=u"s", access=u"read")
872
def last_enabled_dbus_property(self):
873
if self.last_enabled is None:
874
return dbus.String(u"")
875
return dbus.String(self._datetime_to_dbus(self.last_enabled))
878
@dbus_service_property(_interface, signature=u"b",
880
def enabled_dbus_property(self, value=None):
881
if value is None: # get
882
return dbus.Boolean(self.enabled)
888
# last_checked_ok - property
889
@dbus_service_property(_interface, signature=u"s",
891
def last_checked_ok_dbus_property(self, value=None):
892
if value is not None:
895
if self.last_checked_ok is None:
896
return dbus.String(u"")
897
return dbus.String(self._datetime_to_dbus(self
901
@dbus_service_property(_interface, signature=u"t",
903
def timeout_dbus_property(self, value=None):
904
if value is None: # get
905
return dbus.UInt64(self.timeout_milliseconds())
906
self.timeout = datetime.timedelta(0, 0, 0, value)
908
self.PropertyChanged(dbus.String(u"timeout"),
909
dbus.UInt64(value, variant_level=1))
910
if getattr(self, u"disable_initiator_tag", None) is None:
913
gobject.source_remove(self.disable_initiator_tag)
914
self.disable_initiator_tag = None
916
_timedelta_to_milliseconds((self
922
# The timeout has passed
925
self.disable_initiator_tag = (gobject.timeout_add
926
(time_to_die, self.disable))
928
# interval - property
929
@dbus_service_property(_interface, signature=u"t",
931
def interval_dbus_property(self, value=None):
932
if value is None: # get
933
return dbus.UInt64(self.interval_milliseconds())
934
self.interval = datetime.timedelta(0, 0, 0, value)
936
self.PropertyChanged(dbus.String(u"interval"),
937
dbus.UInt64(value, variant_level=1))
938
if getattr(self, u"checker_initiator_tag", None) is None:
940
# Reschedule checker run
941
gobject.source_remove(self.checker_initiator_tag)
942
self.checker_initiator_tag = (gobject.timeout_add
943
(value, self.start_checker))
944
self.start_checker() # Start one now, too
947
@dbus_service_property(_interface, signature=u"s",
949
def checker_dbus_property(self, value=None):
950
if value is None: # get
951
return dbus.String(self.checker_command)
952
self.checker_command = value
954
self.PropertyChanged(dbus.String(u"checker"),
955
dbus.String(self.checker_command,
958
# checker_running - property
959
@dbus_service_property(_interface, signature=u"b",
961
def checker_running_dbus_property(self, value=None):
962
if value is None: # get
963
return dbus.Boolean(self.checker is not None)
969
# object_path - property
970
@dbus_service_property(_interface, signature=u"o", access=u"read")
971
def object_path_dbus_property(self):
972
return self.dbus_object_path # is already a dbus.ObjectPath
975
@dbus_service_property(_interface, signature=u"ay",
976
access=u"write", byte_arrays=True)
977
def secret_dbus_property(self, value):
978
self.secret = str(value)
983
class ClientHandler(socketserver.BaseRequestHandler, object):
984
"""A class to handle client connections.
986
Instantiated once for each connection to handle it.
426
987
Note: This will run in its own forked process."""
428
989
def handle(self):
429
990
logger.info(u"TCP connection from: %s",
430
unicode(self.client_address))
431
session = gnutls.connection.ClientSession\
432
(self.request, gnutls.connection.X509Credentials())
434
line = self.request.makefile().readline()
435
logger.debug(u"Protocol version: %r", line)
437
if int(line.strip().split()[0]) > 1:
439
except (ValueError, IndexError, RuntimeError), error:
440
logger.error(u"Unknown protocol version: %s", error)
443
# Note: gnutls.connection.X509Credentials is really a generic
444
# GnuTLS certificate credentials object so long as no X.509
445
# keys are added to it. Therefore, we can use it here despite
446
# using OpenPGP certificates.
448
#priority = ':'.join(("NONE", "+VERS-TLS1.1", "+AES-256-CBC",
449
# "+SHA1", "+COMP-NULL", "+CTYPE-OPENPGP",
451
priority = "NORMAL" # Fallback default, since this
453
if self.server.settings["priority"]:
454
priority = self.server.settings["priority"]
455
gnutls.library.functions.gnutls_priority_set_direct\
456
(session._c_object, priority, None);
460
except gnutls.errors.GNUTLSError, error:
461
logger.warning(u"Handshake failed: %s", error)
462
# Do not run session.bye() here: the session is not
463
# established. Just abandon the request.
466
fpr = fingerprint(peer_certificate(session))
467
except (TypeError, gnutls.errors.GNUTLSError), error:
468
logger.warning(u"Bad certificate: %s", error)
471
logger.debug(u"Fingerprint: %s", fpr)
473
for c in self.server.clients:
474
if c.fingerprint == fpr:
478
logger.warning(u"Client not found for fingerprint: %s",
482
# Have to check if client.still_valid(), since it is possible
483
# that the client timed out while establishing the GnuTLS
485
if not client.still_valid():
486
logger.warning(u"Client %(name)s is invalid",
491
while sent_size < len(client.secret):
492
sent = session.send(client.secret[sent_size:])
493
logger.debug(u"Sent: %d, remaining: %d",
494
sent, len(client.secret)
495
- (sent_size + sent))
500
class IPv6_TCPServer(SocketServer.ForkingTCPServer, object):
501
"""IPv6 TCP server. Accepts 'None' as address and/or port.
991
unicode(self.client_address))
992
logger.debug(u"IPC Pipe FD: %d", self.server.pipe[1])
993
# Open IPC pipe to parent process
994
with closing(os.fdopen(self.server.pipe[1], u"w", 1)) as ipc:
995
session = (gnutls.connection
996
.ClientSession(self.request,
1000
line = self.request.makefile().readline()
1001
logger.debug(u"Protocol version: %r", line)
1003
if int(line.strip().split()[0]) > 1:
1005
except (ValueError, IndexError, RuntimeError), error:
1006
logger.error(u"Unknown protocol version: %s", error)
1009
# Note: gnutls.connection.X509Credentials is really a
1010
# generic GnuTLS certificate credentials object so long as
1011
# no X.509 keys are added to it. Therefore, we can use it
1012
# here despite using OpenPGP certificates.
1014
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1015
# u"+AES-256-CBC", u"+SHA1",
1016
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1018
# Use a fallback default, since this MUST be set.
1019
priority = self.server.gnutls_priority
1020
if priority is None:
1021
priority = u"NORMAL"
1022
(gnutls.library.functions
1023
.gnutls_priority_set_direct(session._c_object,
1028
except gnutls.errors.GNUTLSError, error:
1029
logger.warning(u"Handshake failed: %s", error)
1030
# Do not run session.bye() here: the session is not
1031
# established. Just abandon the request.
1033
logger.debug(u"Handshake succeeded")
1035
fpr = self.fingerprint(self.peer_certificate(session))
1036
except (TypeError, gnutls.errors.GNUTLSError), error:
1037
logger.warning(u"Bad certificate: %s", error)
1040
logger.debug(u"Fingerprint: %s", fpr)
1042
for c in self.server.clients:
1043
if c.fingerprint == fpr:
1047
ipc.write(u"NOTFOUND %s %s\n"
1048
% (fpr, unicode(self.client_address)))
1051
# Have to check if client.still_valid(), since it is
1052
# possible that the client timed out while establishing
1053
# the GnuTLS session.
1054
if not client.still_valid():
1055
ipc.write(u"INVALID %s\n" % client.name)
1058
ipc.write(u"SENDING %s\n" % client.name)
1060
while sent_size < len(client.secret):
1061
sent = session.send(client.secret[sent_size:])
1062
logger.debug(u"Sent: %d, remaining: %d",
1063
sent, len(client.secret)
1064
- (sent_size + sent))
1069
def peer_certificate(session):
1070
"Return the peer's OpenPGP certificate as a bytestring"
1071
# If not an OpenPGP certificate...
1072
if (gnutls.library.functions
1073
.gnutls_certificate_type_get(session._c_object)
1074
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1075
# ...do the normal thing
1076
return session.peer_certificate
1077
list_size = ctypes.c_uint(1)
1078
cert_list = (gnutls.library.functions
1079
.gnutls_certificate_get_peers
1080
(session._c_object, ctypes.byref(list_size)))
1081
if not bool(cert_list) and list_size.value != 0:
1082
raise gnutls.errors.GNUTLSError(u"error getting peer"
1084
if list_size.value == 0:
1087
return ctypes.string_at(cert.data, cert.size)
1090
def fingerprint(openpgp):
1091
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1092
# New GnuTLS "datum" with the OpenPGP public key
1093
datum = (gnutls.library.types
1094
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1097
ctypes.c_uint(len(openpgp))))
1098
# New empty GnuTLS certificate
1099
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1100
(gnutls.library.functions
1101
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
1102
# Import the OpenPGP public key into the certificate
1103
(gnutls.library.functions
1104
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1105
gnutls.library.constants
1106
.GNUTLS_OPENPGP_FMT_RAW))
1107
# Verify the self signature in the key
1108
crtverify = ctypes.c_uint()
1109
(gnutls.library.functions
1110
.gnutls_openpgp_crt_verify_self(crt, 0,
1111
ctypes.byref(crtverify)))
1112
if crtverify.value != 0:
1113
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1114
raise (gnutls.errors.CertificateSecurityError
1116
# New buffer for the fingerprint
1117
buf = ctypes.create_string_buffer(20)
1118
buf_len = ctypes.c_size_t()
1119
# Get the fingerprint from the certificate into the buffer
1120
(gnutls.library.functions
1121
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1122
ctypes.byref(buf_len)))
1123
# Deinit the certificate
1124
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1125
# Convert the buffer to a Python bytestring
1126
fpr = ctypes.string_at(buf, buf_len.value)
1127
# Convert the bytestring to hexadecimal notation
1128
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1132
class ForkingMixInWithPipe(socketserver.ForkingMixIn, object):
1133
"""Like socketserver.ForkingMixIn, but also pass a pipe."""
1134
def process_request(self, request, client_address):
1135
"""Overrides and wraps the original process_request().
1137
This function creates a new pipe in self.pipe
1139
self.pipe = os.pipe()
1140
super(ForkingMixInWithPipe,
1141
self).process_request(request, client_address)
1142
os.close(self.pipe[1]) # close write end
1143
self.add_pipe(self.pipe[0])
1144
def add_pipe(self, pipe):
1145
"""Dummy function; override as necessary"""
1149
class IPv6_TCPServer(ForkingMixInWithPipe,
1150
socketserver.TCPServer, object):
1151
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
503
settings: Server settings
504
clients: Set() of Client objects
1154
enabled: Boolean; whether this server is activated yet
1155
interface: None or a network interface name (string)
1156
use_ipv6: Boolean; to use IPv6 or not
506
address_family = socket.AF_INET6
507
def __init__(self, *args, **kwargs):
508
if "settings" in kwargs:
509
self.settings = kwargs["settings"]
510
del kwargs["settings"]
511
if "clients" in kwargs:
512
self.clients = kwargs["clients"]
513
del kwargs["clients"]
514
return super(type(self), self).__init__(*args, **kwargs)
1158
def __init__(self, server_address, RequestHandlerClass,
1159
interface=None, use_ipv6=True):
1160
self.interface = interface
1162
self.address_family = socket.AF_INET6
1163
socketserver.TCPServer.__init__(self, server_address,
1164
RequestHandlerClass)
515
1165
def server_bind(self):
516
1166
"""This overrides the normal server_bind() function
517
1167
to bind to an interface if one was specified, and also NOT to
518
1168
bind to an address or port if they were not specified."""
519
if self.settings["interface"]:
520
# 25 is from /usr/include/asm-i486/socket.h
521
SO_BINDTODEVICE = getattr(socket, "SO_BINDTODEVICE", 25)
523
self.socket.setsockopt(socket.SOL_SOCKET,
525
self.settings["interface"])
526
except socket.error, error:
527
if error[0] == errno.EPERM:
528
logger.error(u"No permission to"
529
u" bind to interface %s",
530
self.settings["interface"])
1169
if self.interface is not None:
1170
if SO_BINDTODEVICE is None:
1171
logger.error(u"SO_BINDTODEVICE does not exist;"
1172
u" cannot bind to interface %s",
1176
self.socket.setsockopt(socket.SOL_SOCKET,
1180
except socket.error, error:
1181
if error[0] == errno.EPERM:
1182
logger.error(u"No permission to"
1183
u" bind to interface %s",
1185
elif error[0] == errno.ENOPROTOOPT:
1186
logger.error(u"SO_BINDTODEVICE not available;"
1187
u" cannot bind to interface %s",
533
1191
# Only bind(2) the socket if we really need to.
534
1192
if self.server_address[0] or self.server_address[1]:
535
1193
if not self.server_address[0]:
537
self.server_address = (in6addr_any,
1194
if self.address_family == socket.AF_INET6:
1195
any_address = u"::" # in6addr_any
1197
any_address = socket.INADDR_ANY
1198
self.server_address = (any_address,
538
1199
self.server_address[1])
539
1200
elif not self.server_address[1]:
540
1201
self.server_address = (self.server_address[0],
542
# if self.settings["interface"]:
1203
# if self.interface:
543
1204
# self.server_address = (self.server_address[0],
546
1207
# if_nametoindex
549
return super(type(self), self).server_bind()
1209
return socketserver.TCPServer.server_bind(self)
1212
class MandosServer(IPv6_TCPServer):
1216
clients: set of Client objects
1217
gnutls_priority GnuTLS priority string
1218
use_dbus: Boolean; to emit D-Bus signals or not
1220
Assumes a gobject.MainLoop event loop.
1222
def __init__(self, server_address, RequestHandlerClass,
1223
interface=None, use_ipv6=True, clients=None,
1224
gnutls_priority=None, use_dbus=True):
1225
self.enabled = False
1226
self.clients = clients
1227
if self.clients is None:
1228
self.clients = set()
1229
self.use_dbus = use_dbus
1230
self.gnutls_priority = gnutls_priority
1231
IPv6_TCPServer.__init__(self, server_address,
1232
RequestHandlerClass,
1233
interface = interface,
1234
use_ipv6 = use_ipv6)
1235
def server_activate(self):
1237
return socketserver.TCPServer.server_activate(self)
1240
def add_pipe(self, pipe):
1241
# Call "handle_ipc" for both data and EOF events
1242
gobject.io_add_watch(pipe, gobject.IO_IN | gobject.IO_HUP,
1244
def handle_ipc(self, source, condition, file_objects={}):
1246
gobject.IO_IN: u"IN", # There is data to read.
1247
gobject.IO_OUT: u"OUT", # Data can be written (without
1249
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1250
gobject.IO_ERR: u"ERR", # Error condition.
1251
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1252
# broken, usually for pipes and
1255
conditions_string = ' | '.join(name
1257
condition_names.iteritems()
1258
if cond & condition)
1259
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1262
# Turn the pipe file descriptor into a Python file object
1263
if source not in file_objects:
1264
file_objects[source] = os.fdopen(source, u"r", 1)
1266
# Read a line from the file object
1267
cmdline = file_objects[source].readline()
1268
if not cmdline: # Empty line means end of file
1269
# close the IPC pipe
1270
file_objects[source].close()
1271
del file_objects[source]
1273
# Stop calling this function
1276
logger.debug(u"IPC command: %r", cmdline)
1278
# Parse and act on command
1279
cmd, args = cmdline.rstrip(u"\r\n").split(None, 1)
1281
if cmd == u"NOTFOUND":
1282
logger.warning(u"Client not found for fingerprint: %s",
1286
mandos_dbus_service.ClientNotFound(args)
1287
elif cmd == u"INVALID":
1288
for client in self.clients:
1289
if client.name == args:
1290
logger.warning(u"Client %s is invalid", args)
1296
logger.error(u"Unknown client %s is invalid", args)
1297
elif cmd == u"SENDING":
1298
for client in self.clients:
1299
if client.name == args:
1300
logger.info(u"Sending secret to %s", client.name)
1307
logger.error(u"Sending secret to unknown client %s",
1310
logger.error(u"Unknown IPC command: %r", cmdline)
1312
# Keep calling this function
552
1316
def string_to_delta(interval):
553
1317
"""Parse a string and return a datetime.timedelta
555
>>> string_to_delta('7d')
1319
>>> string_to_delta(u'7d')
556
1320
datetime.timedelta(7)
557
>>> string_to_delta('60s')
1321
>>> string_to_delta(u'60s')
558
1322
datetime.timedelta(0, 60)
559
>>> string_to_delta('60m')
1323
>>> string_to_delta(u'60m')
560
1324
datetime.timedelta(0, 3600)
561
>>> string_to_delta('24h')
1325
>>> string_to_delta(u'24h')
562
1326
datetime.timedelta(1)
563
1327
>>> string_to_delta(u'1w')
564
1328
datetime.timedelta(7)
1329
>>> string_to_delta(u'5m 30s')
1330
datetime.timedelta(0, 330)
567
suffix=unicode(interval[-1])
568
value=int(interval[:-1])
570
delta = datetime.timedelta(value)
572
delta = datetime.timedelta(0, value)
574
delta = datetime.timedelta(0, 0, 0, 0, value)
576
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
578
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1332
timevalue = datetime.timedelta(0)
1333
for s in interval.split():
1335
suffix = unicode(s[-1])
1338
delta = datetime.timedelta(value)
1339
elif suffix == u"s":
1340
delta = datetime.timedelta(0, value)
1341
elif suffix == u"m":
1342
delta = datetime.timedelta(0, 0, 0, 0, value)
1343
elif suffix == u"h":
1344
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1345
elif suffix == u"w":
1346
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1349
except (ValueError, IndexError):
580
1350
raise ValueError
581
except (ValueError, IndexError):
586
def server_state_changed(state):
587
"""Derived from the Avahi example code"""
588
if state == avahi.SERVER_COLLISION:
589
logger.error(u"Server name collision")
591
elif state == avahi.SERVER_RUNNING:
595
def entry_group_state_changed(state, error):
596
"""Derived from the Avahi example code"""
597
logger.debug(u"state change: %i", state)
599
if state == avahi.ENTRY_GROUP_ESTABLISHED:
600
logger.debug(u"Service established.")
601
elif state == avahi.ENTRY_GROUP_COLLISION:
602
logger.warning(u"Service name collision.")
604
elif state == avahi.ENTRY_GROUP_FAILURE:
605
logger.critical(u"Error in group state changed %s",
607
raise AvahiGroupError("State changed: %s", str(error))
609
1355
def if_nametoindex(interface):
610
"""Call the C function if_nametoindex(), or equivalent"""
1356
"""Call the C function if_nametoindex(), or equivalent
1358
Note: This function cannot accept a unicode string."""
611
1359
global if_nametoindex
613
if "ctypes.util" not in sys.modules:
615
if_nametoindex = ctypes.cdll.LoadLibrary\
616
(ctypes.util.find_library("c")).if_nametoindex
1361
if_nametoindex = (ctypes.cdll.LoadLibrary
1362
(ctypes.util.find_library(u"c"))
617
1364
except (OSError, AttributeError):
618
if "struct" not in sys.modules:
620
if "fcntl" not in sys.modules:
1365
logger.warning(u"Doing if_nametoindex the hard way")
622
1366
def if_nametoindex(interface):
623
1367
"Get an interface index the hard way, i.e. using fcntl()"
624
1368
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
626
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
627
struct.pack("16s16x", interface))
629
interface_index = struct.unpack("I", ifreq[16:20])[0]
1369
with closing(socket.socket()) as s:
1370
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1371
struct.pack(str(u"16s16x"),
1373
interface_index = struct.unpack(str(u"I"),
630
1375
return interface_index
631
1376
return if_nametoindex(interface)
634
1379
def daemon(nochdir = False, noclose = False):
635
1380
"""See daemon(3). Standard BSD Unix function.
636
1382
This should really exist as os.daemon, but it doesn't (yet)."""
688
1441
# Default values for config file for server-global settings
689
server_defaults = { "interface": "",
694
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
695
"servicename": "Mandos",
1442
server_defaults = { u"interface": u"",
1447
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1448
u"servicename": u"Mandos",
1449
u"use_dbus": u"True",
1450
u"use_ipv6": u"True",
698
1453
# Parse config file for server-global settings
699
server_config = ConfigParser.SafeConfigParser(server_defaults)
1454
server_config = configparser.SafeConfigParser(server_defaults)
700
1455
del server_defaults
701
server_config.read(os.path.join(options.configdir, "mandos.conf"))
702
server_section = "server"
1456
server_config.read(os.path.join(options.configdir,
703
1458
# Convert the SafeConfigParser object to a dict
704
server_settings = dict(server_config.items(server_section))
705
# Use getboolean on the boolean config option
706
server_settings["debug"] = server_config.getboolean\
707
(server_section, "debug")
1459
server_settings = server_config.defaults()
1460
# Use the appropriate methods on the non-string config options
1461
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1462
server_settings[option] = server_config.getboolean(u"DEFAULT",
1464
if server_settings["port"]:
1465
server_settings["port"] = server_config.getint(u"DEFAULT",
708
1467
del server_config
710
1469
# Override the settings from the config file with command line
711
1470
# options, if set.
712
for option in ("interface", "address", "port", "debug",
713
"priority", "servicename", "configdir"):
1471
for option in (u"interface", u"address", u"port", u"debug",
1472
u"priority", u"servicename", u"configdir",
1473
u"use_dbus", u"use_ipv6"):
714
1474
value = getattr(options, option)
715
1475
if value is not None:
716
1476
server_settings[option] = value
1478
# Force all strings to be unicode
1479
for option in server_settings.keys():
1480
if type(server_settings[option]) is str:
1481
server_settings[option] = unicode(server_settings[option])
718
1482
# Now we have our good server settings in "server_settings"
720
debug = server_settings["debug"]
1484
##################################################################
1487
debug = server_settings[u"debug"]
1488
use_dbus = server_settings[u"use_dbus"]
1489
use_ipv6 = server_settings[u"use_ipv6"]
723
1492
syslogger.setLevel(logging.WARNING)
724
1493
console.setLevel(logging.WARNING)
726
if server_settings["servicename"] != "Mandos":
727
syslogger.setFormatter(logging.Formatter\
728
('Mandos (%s): %%(levelname)s:'
730
% server_settings["servicename"]))
1495
if server_settings[u"servicename"] != u"Mandos":
1496
syslogger.setFormatter(logging.Formatter
1497
(u'Mandos (%s) [%%(process)d]:'
1498
u' %%(levelname)s: %%(message)s'
1499
% server_settings[u"servicename"]))
732
1501
# Parse config file with clients
733
client_defaults = { "timeout": "1h",
735
"checker": "fping -q -- %%(host)s",
1502
client_defaults = { u"timeout": u"1h",
1504
u"checker": u"fping -q -- %%(host)s",
737
client_config = ConfigParser.SafeConfigParser(client_defaults)
738
client_config.read(os.path.join(server_settings["configdir"],
742
service = AvahiService(name = server_settings["servicename"],
743
type = "_mandos._tcp", );
744
if server_settings["interface"]:
745
service.interface = if_nametoindex(server_settings["interface"])
1507
client_config = configparser.SafeConfigParser(client_defaults)
1508
client_config.read(os.path.join(server_settings[u"configdir"],
1511
global mandos_dbus_service
1512
mandos_dbus_service = None
1514
tcp_server = MandosServer((server_settings[u"address"],
1515
server_settings[u"port"]),
1517
interface=server_settings[u"interface"],
1520
server_settings[u"priority"],
1522
pidfilename = u"/var/run/mandos.pid"
1524
pidfile = open(pidfilename, u"w")
1526
logger.error(u"Could not open file %r", pidfilename)
1529
uid = pwd.getpwnam(u"_mandos").pw_uid
1530
gid = pwd.getpwnam(u"_mandos").pw_gid
1533
uid = pwd.getpwnam(u"mandos").pw_uid
1534
gid = pwd.getpwnam(u"mandos").pw_gid
1537
uid = pwd.getpwnam(u"nobody").pw_uid
1538
gid = pwd.getpwnam(u"nobody").pw_gid
1545
except OSError, error:
1546
if error[0] != errno.EPERM:
1549
# Enable all possible GnuTLS debugging
1551
# "Use a log level over 10 to enable all debugging options."
1553
gnutls.library.functions.gnutls_global_set_log_level(11)
1555
@gnutls.library.types.gnutls_log_func
1556
def debug_gnutls(level, string):
1557
logger.debug(u"GnuTLS: %s", string[:-1])
1559
(gnutls.library.functions
1560
.gnutls_global_set_log_function(debug_gnutls))
747
1562
global main_loop
750
1563
# From the Avahi example code
751
1564
DBusGMainLoop(set_as_default=True )
752
1565
main_loop = gobject.MainLoop()
753
1566
bus = dbus.SystemBus()
754
server = dbus.Interface(
755
bus.get_object( avahi.DBUS_NAME, avahi.DBUS_PATH_SERVER ),
756
avahi.DBUS_INTERFACE_SERVER )
757
1567
# End of Avahi example code
760
def remove_from_clients(client):
761
clients.remove(client)
763
logger.critical(u"No clients left, exiting")
766
clients.update(Set(Client(name = section,
767
stop_hook = remove_from_clients,
769
= dict(client_config.items(section)))
770
for section in client_config.sections()))
772
logger.critical(u"No clients defined")
1569
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos", bus)
1570
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1571
service = AvahiService(name = server_settings[u"servicename"],
1572
servicetype = u"_mandos._tcp",
1573
protocol = protocol, bus = bus)
1574
if server_settings["interface"]:
1575
service.interface = (if_nametoindex
1576
(str(server_settings[u"interface"])))
1578
client_class = Client
1580
client_class = functools.partial(ClientDBus, bus = bus)
1581
tcp_server.clients.update(set(
1582
client_class(name = section,
1583
config= dict(client_config.items(section)))
1584
for section in client_config.sections()))
1585
if not tcp_server.clients:
1586
logger.warning(u"No clients defined")
1589
# Redirect stdin so all checkers get /dev/null
1590
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1591
os.dup2(null, sys.stdin.fileno())
1595
# No console logging
776
1596
logger.removeHandler(console)
1597
# Close all input and output, do double fork, etc.
779
pidfilename = "/var/run/mandos/mandos.pid"
782
pidfile = open(pidfilename, "w")
783
pidfile.write(str(pid) + "\n")
1601
with closing(pidfile):
1603
pidfile.write(str(pid) + "\n")
787
logger.error(u"Could not write %s file with PID %d",
788
pidfilename, os.getpid())
1606
logger.error(u"Could not write to file %r with PID %d",
1609
# "pidfile" was never created
791
1614
"Cleanup function; run on exit"
793
# From the Avahi example code
794
if not group is None:
797
# End of Avahi example code
800
client = clients.pop()
801
client.stop_hook = None
1617
while tcp_server.clients:
1618
client = tcp_server.clients.pop()
1619
client.disable_hook = None
804
1622
atexit.register(cleanup)