45
44
import gnutls.library.functions
46
45
import gnutls.library.constants
47
46
import gnutls.library.types
48
import ConfigParser as configparser
57
57
import logging.handlers
63
import cPickle as pickle
64
import multiprocessing
71
62
from dbus.mainloop.glib import DBusGMainLoop
74
import xml.dom.minidom
78
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
79
except AttributeError:
81
from IN import SO_BINDTODEVICE
83
SO_BINDTODEVICE = None
88
#logger = logging.getLogger('mandos')
65
# Brief description of the operation of this program:
67
# This server announces itself as a Zeroconf service. Connecting
68
# clients use the TLS protocol, with the unusual quirk that this
69
# server program acts as a TLS "client" while the connecting clients
70
# acts as a TLS "server". The clients (acting as a TLS "server") must
71
# supply an OpenPGP certificate, and the fingerprint of this
72
# certificate is used by this server to look up (in a list read from a
73
# file at start time) which binary blob to give the client. No other
74
# authentication or authorization is done by this server.
89
77
logger = logging.Logger('mandos')
90
syslogger = (logging.handlers.SysLogHandler
91
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
92
address = str("/dev/log")))
93
syslogger.setFormatter(logging.Formatter
94
('Mandos [%(process)d]: %(levelname)s:'
78
syslogger = logging.handlers.SysLogHandler\
79
(facility = logging.handlers.SysLogHandler.LOG_DAEMON)
80
syslogger.setFormatter(logging.Formatter\
81
('%(levelname)s: %(message)s'))
96
82
logger.addHandler(syslogger)
98
console = logging.StreamHandler()
99
console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'
102
logger.addHandler(console)
104
class AvahiError(Exception):
105
def __init__(self, value, *args, **kwargs):
107
super(AvahiError, self).__init__(value, *args, **kwargs)
108
def __unicode__(self):
109
return unicode(repr(self.value))
111
class AvahiServiceError(AvahiError):
114
class AvahiGroupError(AvahiError):
118
class AvahiService(object):
119
"""An Avahi (Zeroconf) service.
122
interface: integer; avahi.IF_UNSPEC or an interface index.
123
Used to optionally bind to the specified interface.
124
name: string; Example: 'Mandos'
125
type: string; Example: '_mandos._tcp'.
126
See <http://www.dns-sd.org/ServiceTypes.html>
127
port: integer; what port to announce
128
TXT: list of strings; TXT record for the service
129
domain: string; Domain to publish on, default to .local if empty.
130
host: string; Host to publish records for, default is localhost
131
max_renames: integer; maximum number of renames
132
rename_count: integer; counter so we only rename after collisions
133
a sensible number of times
134
group: D-Bus Entry Group
136
bus: dbus.SystemBus()
138
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
139
servicetype = None, port = None, TXT = None,
140
domain = "", host = "", max_renames = 32768,
141
protocol = avahi.PROTO_UNSPEC, bus = None):
142
self.interface = interface
144
self.type = servicetype
146
self.TXT = TXT if TXT is not None else []
149
self.rename_count = 0
150
self.max_renames = max_renames
151
self.protocol = protocol
152
self.group = None # our entry group
155
self.entry_group_state_changed_match = None
157
"""Derived from the Avahi example code"""
158
if self.rename_count >= self.max_renames:
159
logger.critical("No suitable Zeroconf service name found"
160
" after %i retries, exiting.",
162
raise AvahiServiceError("Too many renames")
163
self.name = unicode(self.server
164
.GetAlternativeServiceName(self.name))
165
logger.info("Changing Zeroconf service name to %r ...",
167
syslogger.setFormatter(logging.Formatter
168
('Mandos (%s) [%%(process)d]:'
169
' %%(levelname)s: %%(message)s'
174
except dbus.exceptions.DBusException as error:
175
logger.critical("DBusException: %s", error)
178
self.rename_count += 1
180
"""Derived from the Avahi example code"""
181
if self.entry_group_state_changed_match is not None:
182
self.entry_group_state_changed_match.remove()
183
self.entry_group_state_changed_match = None
184
if self.group is not None:
187
"""Derived from the Avahi example code"""
189
if self.group is None:
190
self.group = dbus.Interface(
191
self.bus.get_object(avahi.DBUS_NAME,
192
self.server.EntryGroupNew()),
193
avahi.DBUS_INTERFACE_ENTRY_GROUP)
194
self.entry_group_state_changed_match = (
195
self.group.connect_to_signal(
196
'StateChanged', self .entry_group_state_changed))
197
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
198
self.name, self.type)
199
self.group.AddService(
202
dbus.UInt32(0), # flags
203
self.name, self.type,
204
self.domain, self.host,
205
dbus.UInt16(self.port),
206
avahi.string_array_to_txt_array(self.TXT))
208
def entry_group_state_changed(self, state, error):
209
"""Derived from the Avahi example code"""
210
logger.debug("Avahi entry group state change: %i", state)
212
if state == avahi.ENTRY_GROUP_ESTABLISHED:
213
logger.debug("Zeroconf service established.")
214
elif state == avahi.ENTRY_GROUP_COLLISION:
215
logger.info("Zeroconf service name collision.")
217
elif state == avahi.ENTRY_GROUP_FAILURE:
218
logger.critical("Avahi: Error in group state changed %s",
220
raise AvahiGroupError("State changed: %s"
223
"""Derived from the Avahi example code"""
224
if self.group is not None:
227
except (dbus.exceptions.UnknownMethodException,
228
dbus.exceptions.DBusException) as e:
232
def server_state_changed(self, state, error=None):
233
"""Derived from the Avahi example code"""
234
logger.debug("Avahi server state change: %i", state)
235
bad_states = { avahi.SERVER_INVALID:
236
"Zeroconf server invalid",
237
avahi.SERVER_REGISTERING: None,
238
avahi.SERVER_COLLISION:
239
"Zeroconf server name collision",
240
avahi.SERVER_FAILURE:
241
"Zeroconf server failure" }
242
if state in bad_states:
243
if bad_states[state] is not None:
245
logger.error(bad_states[state])
247
logger.error(bad_states[state] + ": %r", error)
249
elif state == avahi.SERVER_RUNNING:
253
logger.debug("Unknown state: %r", state)
255
logger.debug("Unknown state: %r: %r", state, error)
257
"""Derived from the Avahi example code"""
258
if self.server is None:
259
self.server = dbus.Interface(
260
self.bus.get_object(avahi.DBUS_NAME,
261
avahi.DBUS_PATH_SERVER,
262
follow_name_owner_changes=True),
263
avahi.DBUS_INTERFACE_SERVER)
264
self.server.connect_to_signal("StateChanged",
265
self.server_state_changed)
266
self.server_state_changed(self.server.GetState())
269
def _timedelta_to_milliseconds(td):
270
"Convert a datetime.timedelta() to milliseconds"
271
return ((td.days * 24 * 60 * 60 * 1000)
272
+ (td.seconds * 1000)
273
+ (td.microseconds // 1000))
85
# This variable is used to optionally bind to a specified interface.
86
# It is a global variable to fit in with the other variables from the
88
serviceInterface = avahi.IF_UNSPEC
89
# From the Avahi example code:
91
serviceType = "_mandos._tcp" # http://www.dns-sd.org/ServiceTypes.html
92
servicePort = None # Not known at startup
93
serviceTXT = [] # TXT record for the service
94
domain = "" # Domain to publish on, default to .local
95
host = "" # Host to publish records for, default to localhost
96
group = None #our entry group
97
rename_count = 12 # Counter so we only rename after collisions a
98
# sensible number of times
99
# End of Avahi example code
275
102
class Client(object):
276
103
"""A representation of a client host served by this server.
279
_approved: bool(); 'None' if not yet approved/disapproved
280
approval_delay: datetime.timedelta(); Time to wait for approval
281
approval_duration: datetime.timedelta(); Duration of one approval
282
checker: subprocess.Popen(); a running checker process used
283
to see if the client lives.
284
'None' if no process is running.
285
checker_callback_tag: a gobject event source tag, or None
286
checker_command: string; External command which is run to check
287
if client lives. %() expansions are done at
105
name: string; from the config file, used in log messages
106
fingerprint: string (40 or 32 hexadecimal digits); used to
107
uniquely identify the client
108
secret: bytestring; sent verbatim (over TLS) to client
109
fqdn: string (FQDN); available for use by the checker command
110
created: datetime.datetime()
111
last_seen: datetime.datetime() or None if not yet seen
112
timeout: datetime.timedelta(); How long from last_seen until
113
this client is invalid
114
interval: datetime.timedelta(); How often to start a new checker
115
stop_hook: If set, called by stop() as stop_hook(self)
116
checker: subprocess.Popen(); a running checker process used
117
to see if the client lives.
118
Is None if no process is running.
119
checker_initiator_tag: a gobject event source tag, or None
120
stop_initiator_tag: - '' -
121
checker_callback_tag: - '' -
122
checker_command: string; External command which is run to check if
123
client lives. %()s expansions are done at
288
124
runtime with vars(self) as dict, so that for
289
125
instance %(name)s can be used in the command.
290
checker_initiator_tag: a gobject event source tag, or None
291
created: datetime.datetime(); (UTC) object creation
292
current_checker_command: string; current running checker_command
293
disable_hook: If set, called by disable() as disable_hook(self)
294
disable_initiator_tag: a gobject event source tag, or None
296
fingerprint: string (40 or 32 hexadecimal digits); used to
297
uniquely identify the client
298
host: string; available for use by the checker command
299
interval: datetime.timedelta(); How often to start a new checker
300
last_approval_request: datetime.datetime(); (UTC) or None
301
last_checked_ok: datetime.datetime(); (UTC) or None
302
last_enabled: datetime.datetime(); (UTC)
303
name: string; from the config file, used in log messages and
305
secret: bytestring; sent verbatim (over TLS) to client
306
timeout: datetime.timedelta(); How long from last_checked_ok
307
until this client is disabled
308
extended_timeout: extra long timeout when password has been sent
309
runtime_expansions: Allowed attributes for runtime expansion.
310
expires: datetime.datetime(); time (UTC) when a client will be
127
_timeout: Real variable for 'timeout'
128
_interval: Real variable for 'interval'
129
_timeout_milliseconds: Used by gobject.timeout_add()
130
_interval_milliseconds: - '' -
314
runtime_expansions = ("approval_delay", "approval_duration",
315
"created", "enabled", "fingerprint",
316
"host", "interval", "last_checked_ok",
317
"last_enabled", "name", "timeout")
319
def timeout_milliseconds(self):
320
"Return the 'timeout' attribute in milliseconds"
321
return _timedelta_to_milliseconds(self.timeout)
323
def extended_timeout_milliseconds(self):
324
"Return the 'extended_timeout' attribute in milliseconds"
325
return _timedelta_to_milliseconds(self.extended_timeout)
327
def interval_milliseconds(self):
328
"Return the 'interval' attribute in milliseconds"
329
return _timedelta_to_milliseconds(self.interval)
331
def approval_delay_milliseconds(self):
332
return _timedelta_to_milliseconds(self.approval_delay)
334
def __init__(self, name = None, disable_hook=None, config=None):
335
"""Note: the 'checker' key in 'config' sets the
336
'checker_command' attribute and *not* the 'checker'
132
def _set_timeout(self, timeout):
133
"Setter function for 'timeout' attribute"
134
self._timeout = timeout
135
self._timeout_milliseconds = ((self.timeout.days
136
* 24 * 60 * 60 * 1000)
137
+ (self.timeout.seconds * 1000)
138
+ (self.timeout.microseconds
140
timeout = property(lambda self: self._timeout,
143
def _set_interval(self, interval):
144
"Setter function for 'interval' attribute"
145
self._interval = interval
146
self._interval_milliseconds = ((self.interval.days
147
* 24 * 60 * 60 * 1000)
148
+ (self.interval.seconds
150
+ (self.interval.microseconds
152
interval = property(lambda self: self._interval,
155
def __init__(self, name=None, stop_hook=None, fingerprint=None,
156
secret=None, secfile=None, fqdn=None, timeout=None,
157
interval=-1, checker=None):
158
"""Note: the 'checker' argument sets the 'checker_command'
159
attribute and not the 'checker' attribute.."""
341
logger.debug("Creating client %r", self.name)
342
# Uppercase and remove spaces from fingerprint for later
343
# comparison purposes with return value from the fingerprint()
345
self.fingerprint = (config["fingerprint"].upper()
347
logger.debug(" Fingerprint: %s", self.fingerprint)
348
if "secret" in config:
349
self.secret = config["secret"].decode("base64")
350
elif "secfile" in config:
351
with open(os.path.expanduser(os.path.expandvars
352
(config["secfile"])),
354
self.secret = secfile.read()
161
logger.debug(u"Creating client %r", self.name)
162
# Uppercase and remove spaces from fingerprint
163
# for later comparison purposes with return value of
164
# the fingerprint() function
165
self.fingerprint = fingerprint.upper().replace(u" ", u"")
166
logger.debug(u" Fingerprint: %s", self.fingerprint)
168
self.secret = secret.decode(u"base64")
171
self.secret = sf.read()
356
raise TypeError("No secret or secfile for client %s"
358
self.host = config.get("host", "")
359
self.created = datetime.datetime.utcnow()
361
self.last_approval_request = None
362
self.last_enabled = None
363
self.last_checked_ok = None
364
self.timeout = string_to_delta(config["timeout"])
365
self.extended_timeout = string_to_delta(config
366
["extended_timeout"])
367
self.interval = string_to_delta(config["interval"])
368
self.disable_hook = disable_hook
174
raise RuntimeError(u"No secret or secfile for client %s"
176
self.fqdn = fqdn # string
177
self.created = datetime.datetime.now()
178
self.last_seen = None
179
self.timeout = string_to_delta(timeout)
180
self.interval = string_to_delta(interval)
181
self.stop_hook = stop_hook
369
182
self.checker = None
370
183
self.checker_initiator_tag = None
371
self.disable_initiator_tag = None
184
self.stop_initiator_tag = None
373
185
self.checker_callback_tag = None
374
self.checker_command = config["checker"]
375
self.current_checker_command = None
376
self.last_connect = None
377
self._approved = None
378
self.approved_by_default = config.get("approved_by_default",
380
self.approvals_pending = 0
381
self.approval_delay = string_to_delta(
382
config["approval_delay"])
383
self.approval_duration = string_to_delta(
384
config["approval_duration"])
385
self.changedstate = (multiprocessing_manager
386
.Condition(multiprocessing_manager
389
def send_changedstate(self):
390
self.changedstate.acquire()
391
self.changedstate.notify_all()
392
self.changedstate.release()
186
self.check_command = checker
395
188
"""Start this client's checker and timeout hooks"""
396
if getattr(self, "enabled", False):
399
self.send_changedstate()
400
189
# Schedule a new checker to be started an 'interval' from now,
401
190
# and every interval from then on.
402
self.checker_initiator_tag = (gobject.timeout_add
403
(self.interval_milliseconds(),
405
# Schedule a disable() when 'timeout' has passed
406
self.expires = datetime.datetime.utcnow() + self.timeout
407
self.disable_initiator_tag = (gobject.timeout_add
408
(self.timeout_milliseconds(),
411
self.last_enabled = datetime.datetime.utcnow()
191
self.checker_initiator_tag = gobject.timeout_add\
192
(self._interval_milliseconds,
412
194
# Also start a new checker *right now*.
413
195
self.start_checker()
415
def disable(self, quiet=True):
416
"""Disable this client."""
417
if not getattr(self, "enabled", False):
196
# Schedule a stop() when 'timeout' has passed
197
self.stop_initiator_tag = gobject.timeout_add\
198
(self._timeout_milliseconds,
202
The possibility that this client might be restarted is left
203
open, but not currently used."""
204
# If this client doesn't have a secret, it is already stopped.
206
logger.debug(u"Stopping client %s", self.name)
420
self.send_changedstate()
422
logger.info("Disabling client %s", self.name)
423
if getattr(self, "disable_initiator_tag", False):
424
gobject.source_remove(self.disable_initiator_tag)
425
self.disable_initiator_tag = None
427
if getattr(self, "checker_initiator_tag", False):
210
if hasattr(self, "stop_initiator_tag") \
211
and self.stop_initiator_tag:
212
gobject.source_remove(self.stop_initiator_tag)
213
self.stop_initiator_tag = None
214
if hasattr(self, "checker_initiator_tag") \
215
and self.checker_initiator_tag:
428
216
gobject.source_remove(self.checker_initiator_tag)
429
217
self.checker_initiator_tag = None
430
218
self.stop_checker()
431
if self.disable_hook:
432
self.disable_hook(self)
434
221
# Do not run this again if called by a gobject.timeout_add
437
223
def __del__(self):
438
self.disable_hook = None
441
def checker_callback(self, pid, condition, command):
224
self.stop_hook = None
226
def checker_callback(self, pid, condition):
442
227
"""The checker has completed, so take appropriate actions."""
228
now = datetime.datetime.now()
443
229
self.checker_callback_tag = None
444
230
self.checker = None
445
if os.WIFEXITED(condition):
446
exitstatus = os.WEXITSTATUS(condition)
448
logger.info("Checker for %(name)s succeeded",
452
logger.info("Checker for %(name)s failed",
455
logger.warning("Checker for %(name)s crashed?",
231
if os.WIFEXITED(condition) \
232
and (os.WEXITSTATUS(condition) == 0):
233
logger.debug(u"Checker for %(name)s succeeded",
236
gobject.source_remove(self.stop_initiator_tag)
237
self.stop_initiator_tag = gobject.timeout_add\
238
(self._timeout_milliseconds,
240
elif not os.WIFEXITED(condition):
241
logger.warning(u"Checker for %(name)s crashed?",
458
def checked_ok(self, timeout=None):
459
"""Bump up the timeout for this client.
461
This should only be called when the client has been seen,
465
timeout = self.timeout
466
self.last_checked_ok = datetime.datetime.utcnow()
467
if self.disable_initiator_tag is not None:
468
gobject.source_remove(self.disable_initiator_tag)
469
if getattr(self, "enabled", False):
470
self.disable_initiator_tag = (gobject.timeout_add
471
(_timedelta_to_milliseconds
472
(timeout), self.disable))
473
self.expires = datetime.datetime.utcnow() + timeout
475
def need_approval(self):
476
self.last_approval_request = datetime.datetime.utcnow()
244
logger.debug(u"Checker for %(name)s failed",
478
246
def start_checker(self):
479
247
"""Start a new checker subprocess if one is not running.
481
248
If a checker already exists, leave it running and do
483
250
# The reason for not killing a running checker is that if we
486
253
# client would inevitably timeout, since no checker would get
487
254
# a chance to run to completion. If we instead leave running
488
255
# checkers alone, the checker would have to take more time
489
# than 'timeout' for the client to be disabled, which is as it
492
# If a checker exists, make sure it is not a zombie
494
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
495
except (AttributeError, OSError) as error:
496
if (isinstance(error, OSError)
497
and error.errno != errno.ECHILD):
501
logger.warning("Checker was a zombie")
502
gobject.source_remove(self.checker_callback_tag)
503
self.checker_callback(pid, status,
504
self.current_checker_command)
505
# Start a new checker if needed
256
# than 'timeout' for the client to be declared invalid, which
257
# is as it should be.
506
258
if self.checker is None:
508
# In case checker_command has exactly one % operator
509
command = self.checker_command % self.host
260
command = self.check_command % self.fqdn
510
261
except TypeError:
511
# Escape attributes for the shell
512
escaped_attrs = dict(
514
re.escape(unicode(str(getattr(self, attr, "")),
518
self.runtime_expansions)
262
escaped_attrs = dict((key, re.escape(str(val)))
264
vars(self).iteritems())
521
command = self.checker_command % escaped_attrs
522
except TypeError as error:
523
logger.error('Could not format string "%s":'
524
' %s', self.checker_command, error)
266
command = self.check_command % escaped_attrs
267
except TypeError, error:
268
logger.critical(u'Could not format string "%s":'
269
u' %s', self.check_command, error)
525
270
return True # Try again later
526
self.current_checker_command = command
528
logger.info("Starting checker %r for %s",
530
# We don't need to redirect stdout and stderr, since
531
# in normal mode, that is already done by daemon(),
532
# and in debug mode we don't want to. (Stdin is
533
# always replaced by /dev/null.)
534
self.checker = subprocess.Popen(command,
537
self.checker_callback_tag = (gobject.child_watch_add
539
self.checker_callback,
541
# The checker may have completed before the gobject
542
# watch was added. Check for this.
543
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
545
gobject.source_remove(self.checker_callback_tag)
546
self.checker_callback(pid, status, command)
547
except OSError as error:
548
logger.error("Failed to start subprocess: %s",
272
logger.debug(u"Starting checker %r for %s",
274
self.checker = subprocess.\
276
close_fds=True, shell=True,
278
self.checker_callback_tag = gobject.child_watch_add\
280
self.checker_callback)
281
except subprocess.OSError, error:
282
logger.error(u"Failed to start subprocess: %s",
550
284
# Re-run this periodically if run by gobject.timeout_add
553
286
def stop_checker(self):
554
287
"""Force the checker process, if any, to stop."""
555
288
if self.checker_callback_tag:
556
289
gobject.source_remove(self.checker_callback_tag)
557
290
self.checker_callback_tag = None
558
if getattr(self, "checker", None) is None:
291
if not hasattr(self, "checker") or self.checker is None:
560
293
logger.debug("Stopping checker for %(name)s", vars(self))
562
295
os.kill(self.checker.pid, signal.SIGTERM)
564
297
#if self.checker.poll() is None:
565
298
# os.kill(self.checker.pid, signal.SIGKILL)
566
except OSError as error:
567
if error.errno != errno.ESRCH: # No such process
299
except OSError, error:
300
if error.errno != errno.ESRCH:
569
302
self.checker = None
572
def dbus_service_property(dbus_interface, signature="v",
573
access="readwrite", byte_arrays=False):
574
"""Decorators for marking methods of a DBusObjectWithProperties to
575
become properties on the D-Bus.
577
The decorated method will be called with no arguments by "Get"
578
and with one argument by "Set".
580
The parameters, where they are supported, are the same as
581
dbus.service.method, except there is only "signature", since the
582
type from Get() and the type sent to Set() is the same.
584
# Encoding deeply encoded byte arrays is not supported yet by the
585
# "Set" method, so we fail early here:
586
if byte_arrays and signature != "ay":
587
raise ValueError("Byte arrays not supported for non-'ay'"
588
" signature %r" % signature)
590
func._dbus_is_property = True
591
func._dbus_interface = dbus_interface
592
func._dbus_signature = signature
593
func._dbus_access = access
594
func._dbus_name = func.__name__
595
if func._dbus_name.endswith("_dbus_property"):
596
func._dbus_name = func._dbus_name[:-14]
597
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
602
class DBusPropertyException(dbus.exceptions.DBusException):
603
"""A base class for D-Bus property-related exceptions
605
def __unicode__(self):
606
return unicode(str(self))
609
class DBusPropertyAccessException(DBusPropertyException):
610
"""A property's access permissions disallows an operation.
615
class DBusPropertyNotFound(DBusPropertyException):
616
"""An attempt was made to access a non-existing property.
621
class DBusObjectWithProperties(dbus.service.Object):
622
"""A D-Bus object with properties.
624
Classes inheriting from this can use the dbus_service_property
625
decorator to expose methods as D-Bus properties. It exposes the
626
standard Get(), Set(), and GetAll() methods on the D-Bus.
630
def _is_dbus_property(obj):
631
return getattr(obj, "_dbus_is_property", False)
633
def _get_all_dbus_properties(self):
634
"""Returns a generator of (name, attribute) pairs
636
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
637
for cls in self.__class__.__mro__
639
inspect.getmembers(cls, self._is_dbus_property))
641
def _get_dbus_property(self, interface_name, property_name):
642
"""Returns a bound method if one exists which is a D-Bus
643
property with the specified name and interface.
645
for cls in self.__class__.__mro__:
646
for name, value in (inspect.getmembers
647
(cls, self._is_dbus_property)):
648
if (value._dbus_name == property_name
649
and value._dbus_interface == interface_name):
650
return value.__get__(self)
653
raise DBusPropertyNotFound(self.dbus_object_path + ":"
654
+ interface_name + "."
657
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
659
def Get(self, interface_name, property_name):
660
"""Standard D-Bus property Get() method, see D-Bus standard.
662
prop = self._get_dbus_property(interface_name, property_name)
663
if prop._dbus_access == "write":
664
raise DBusPropertyAccessException(property_name)
666
if not hasattr(value, "variant_level"):
668
return type(value)(value, variant_level=value.variant_level+1)
670
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
671
def Set(self, interface_name, property_name, value):
672
"""Standard D-Bus property Set() method, see D-Bus standard.
674
prop = self._get_dbus_property(interface_name, property_name)
675
if prop._dbus_access == "read":
676
raise DBusPropertyAccessException(property_name)
677
if prop._dbus_get_args_options["byte_arrays"]:
678
# The byte_arrays option is not supported yet on
679
# signatures other than "ay".
680
if prop._dbus_signature != "ay":
682
value = dbus.ByteArray(''.join(unichr(byte)
686
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
687
out_signature="a{sv}")
688
def GetAll(self, interface_name):
689
"""Standard D-Bus property GetAll() method, see D-Bus
692
Note: Will not include properties with access="write".
695
for name, prop in self._get_all_dbus_properties():
697
and interface_name != prop._dbus_interface):
698
# Interface non-empty but did not match
700
# Ignore write-only properties
701
if prop._dbus_access == "write":
704
if not hasattr(value, "variant_level"):
707
all[name] = type(value)(value, variant_level=
708
value.variant_level+1)
709
return dbus.Dictionary(all, signature="sv")
711
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
713
path_keyword='object_path',
714
connection_keyword='connection')
715
def Introspect(self, object_path, connection):
716
"""Standard D-Bus method, overloaded to insert property tags.
718
xmlstring = dbus.service.Object.Introspect(self, object_path,
721
document = xml.dom.minidom.parseString(xmlstring)
722
def make_tag(document, name, prop):
723
e = document.createElement("property")
724
e.setAttribute("name", name)
725
e.setAttribute("type", prop._dbus_signature)
726
e.setAttribute("access", prop._dbus_access)
728
for if_tag in document.getElementsByTagName("interface"):
729
for tag in (make_tag(document, name, prop)
731
in self._get_all_dbus_properties()
732
if prop._dbus_interface
733
== if_tag.getAttribute("name")):
734
if_tag.appendChild(tag)
735
# Add the names to the return values for the
736
# "org.freedesktop.DBus.Properties" methods
737
if (if_tag.getAttribute("name")
738
== "org.freedesktop.DBus.Properties"):
739
for cn in if_tag.getElementsByTagName("method"):
740
if cn.getAttribute("name") == "Get":
741
for arg in cn.getElementsByTagName("arg"):
742
if (arg.getAttribute("direction")
744
arg.setAttribute("name", "value")
745
elif cn.getAttribute("name") == "GetAll":
746
for arg in cn.getElementsByTagName("arg"):
747
if (arg.getAttribute("direction")
749
arg.setAttribute("name", "props")
750
xmlstring = document.toxml("utf-8")
752
except (AttributeError, xml.dom.DOMException,
753
xml.parsers.expat.ExpatError) as error:
754
logger.error("Failed to override Introspection method",
759
def datetime_to_dbus (dt, variant_level=0):
760
"""Convert a UTC datetime.datetime() to a D-Bus type."""
762
return dbus.String("", variant_level = variant_level)
763
return dbus.String(dt.isoformat(),
764
variant_level=variant_level)
766
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
768
"""Applied to an empty subclass of a D-Bus object, this metaclass
769
will add additional D-Bus attributes matching a certain pattern.
771
def __new__(mcs, name, bases, attr):
772
# Go through all the base classes which could have D-Bus
773
# methods, signals, or properties in them
774
for base in (b for b in bases
775
if issubclass(b, dbus.service.Object)):
776
# Go though all attributes of the base class
777
for attrname, attribute in inspect.getmembers(base):
778
# Ignore non-D-Bus attributes, and D-Bus attributes
779
# with the wrong interface name
780
if (not hasattr(attribute, "_dbus_interface")
781
or not attribute._dbus_interface
782
.startswith("se.recompile.Mandos")):
784
# Create an alternate D-Bus interface name based on
786
alt_interface = (attribute._dbus_interface
787
.replace("se.recompile.Mandos",
788
"se.bsnet.fukt.Mandos"))
789
# Is this a D-Bus signal?
790
if getattr(attribute, "_dbus_is_signal", False):
791
# Extract the original non-method function by
793
nonmethod_func = (dict(
794
zip(attribute.func_code.co_freevars,
795
attribute.__closure__))["func"]
797
# Create a new, but exactly alike, function
798
# object, and decorate it to be a new D-Bus signal
799
# with the alternate D-Bus interface name
800
new_function = (dbus.service.signal
802
attribute._dbus_signature)
804
nonmethod_func.func_code,
805
nonmethod_func.func_globals,
806
nonmethod_func.func_name,
807
nonmethod_func.func_defaults,
808
nonmethod_func.func_closure)))
809
# Define a creator of a function to call both the
810
# old and new functions, so both the old and new
811
# signals gets sent when the function is called
812
def fixscope(func1, func2):
813
"""This function is a scope container to pass
814
func1 and func2 to the "call_both" function
815
outside of its arguments"""
816
def call_both(*args, **kwargs):
817
"""This function will emit two D-Bus
818
signals by calling func1 and func2"""
819
func1(*args, **kwargs)
820
func2(*args, **kwargs)
822
# Create the "call_both" function and add it to
824
attr[attrname] = fixscope(attribute,
826
# Is this a D-Bus method?
827
elif getattr(attribute, "_dbus_is_method", False):
828
# Create a new, but exactly alike, function
829
# object. Decorate it to be a new D-Bus method
830
# with the alternate D-Bus interface name. Add it
832
attr[attrname] = (dbus.service.method
834
attribute._dbus_in_signature,
835
attribute._dbus_out_signature)
837
(attribute.func_code,
838
attribute.func_globals,
840
attribute.func_defaults,
841
attribute.func_closure)))
842
# Is this a D-Bus property?
843
elif getattr(attribute, "_dbus_is_property", False):
844
# Create a new, but exactly alike, function
845
# object, and decorate it to be a new D-Bus
846
# property with the alternate D-Bus interface
847
# name. Add it to the class.
848
attr[attrname] = (dbus_service_property
850
attribute._dbus_signature,
851
attribute._dbus_access,
853
._dbus_get_args_options
856
(attribute.func_code,
857
attribute.func_globals,
859
attribute.func_defaults,
860
attribute.func_closure)))
861
return type.__new__(mcs, name, bases, attr)
863
class ClientDBus(Client, DBusObjectWithProperties):
864
"""A Client class using D-Bus
867
dbus_object_path: dbus.ObjectPath
868
bus: dbus.SystemBus()
871
runtime_expansions = (Client.runtime_expansions
872
+ ("dbus_object_path",))
874
# dbus.service.Object doesn't use super(), so we can't either.
876
def __init__(self, bus = None, *args, **kwargs):
877
self._approvals_pending = 0
879
Client.__init__(self, *args, **kwargs)
880
# Only now, when this client is initialized, can it show up on
882
client_object_name = unicode(self.name).translate(
885
self.dbus_object_path = (dbus.ObjectPath
886
("/clients/" + client_object_name))
887
DBusObjectWithProperties.__init__(self, self.bus,
888
self.dbus_object_path)
890
def notifychangeproperty(transform_func,
891
dbus_name, type_func=lambda x: x,
893
""" Modify a variable so that it's a property which announces
896
transform_fun: Function that takes a value and a variant_level
897
and transforms it to a D-Bus type.
898
dbus_name: D-Bus name of the variable
899
type_func: Function that transform the value before sending it
900
to the D-Bus. Default: no transform
901
variant_level: D-Bus variant level. Default: 1
903
attrname = "_{0}".format(dbus_name)
904
def setter(self, value):
905
if hasattr(self, "dbus_object_path"):
906
if (not hasattr(self, attrname) or
907
type_func(getattr(self, attrname, None))
908
!= type_func(value)):
909
dbus_value = transform_func(type_func(value),
912
self.PropertyChanged(dbus.String(dbus_name),
914
setattr(self, attrname, value)
916
return property(lambda self: getattr(self, attrname), setter)
919
expires = notifychangeproperty(datetime_to_dbus, "Expires")
920
approvals_pending = notifychangeproperty(dbus.Boolean,
923
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
924
last_enabled = notifychangeproperty(datetime_to_dbus,
926
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
927
type_func = lambda checker:
929
last_checked_ok = notifychangeproperty(datetime_to_dbus,
931
last_approval_request = notifychangeproperty(
932
datetime_to_dbus, "LastApprovalRequest")
933
approved_by_default = notifychangeproperty(dbus.Boolean,
935
approval_delay = notifychangeproperty(dbus.UInt16,
938
_timedelta_to_milliseconds)
939
approval_duration = notifychangeproperty(
940
dbus.UInt16, "ApprovalDuration",
941
type_func = _timedelta_to_milliseconds)
942
host = notifychangeproperty(dbus.String, "Host")
943
timeout = notifychangeproperty(dbus.UInt16, "Timeout",
945
_timedelta_to_milliseconds)
946
extended_timeout = notifychangeproperty(
947
dbus.UInt16, "ExtendedTimeout",
948
type_func = _timedelta_to_milliseconds)
949
interval = notifychangeproperty(dbus.UInt16,
952
_timedelta_to_milliseconds)
953
checker_command = notifychangeproperty(dbus.String, "Checker")
955
del notifychangeproperty
957
def __del__(self, *args, **kwargs):
959
self.remove_from_connection()
962
if hasattr(DBusObjectWithProperties, "__del__"):
963
DBusObjectWithProperties.__del__(self, *args, **kwargs)
964
Client.__del__(self, *args, **kwargs)
966
def checker_callback(self, pid, condition, command,
968
self.checker_callback_tag = None
970
if os.WIFEXITED(condition):
971
exitstatus = os.WEXITSTATUS(condition)
973
self.CheckerCompleted(dbus.Int16(exitstatus),
974
dbus.Int64(condition),
975
dbus.String(command))
978
self.CheckerCompleted(dbus.Int16(-1),
979
dbus.Int64(condition),
980
dbus.String(command))
982
return Client.checker_callback(self, pid, condition, command,
985
def start_checker(self, *args, **kwargs):
986
old_checker = self.checker
987
if self.checker is not None:
988
old_checker_pid = self.checker.pid
990
old_checker_pid = None
991
r = Client.start_checker(self, *args, **kwargs)
992
# Only if new checker process was started
993
if (self.checker is not None
994
and old_checker_pid != self.checker.pid):
996
self.CheckerStarted(self.current_checker_command)
999
def _reset_approved(self):
1000
self._approved = None
1003
def approve(self, value=True):
1004
self.send_changedstate()
1005
self._approved = value
1006
gobject.timeout_add(_timedelta_to_milliseconds
1007
(self.approval_duration),
1008
self._reset_approved)
1011
## D-Bus methods, signals & properties
1012
_interface = "se.recompile.Mandos.Client"
1016
# CheckerCompleted - signal
1017
@dbus.service.signal(_interface, signature="nxs")
1018
def CheckerCompleted(self, exitcode, waitstatus, command):
1022
# CheckerStarted - signal
1023
@dbus.service.signal(_interface, signature="s")
1024
def CheckerStarted(self, command):
1028
# PropertyChanged - signal
1029
@dbus.service.signal(_interface, signature="sv")
1030
def PropertyChanged(self, property, value):
1034
# GotSecret - signal
1035
@dbus.service.signal(_interface)
1036
def GotSecret(self):
1038
Is sent after a successful transfer of secret from the Mandos
1039
server to mandos-client
1044
@dbus.service.signal(_interface, signature="s")
1045
def Rejected(self, reason):
1049
# NeedApproval - signal
1050
@dbus.service.signal(_interface, signature="tb")
1051
def NeedApproval(self, timeout, default):
1053
return self.need_approval()
1058
@dbus.service.method(_interface, in_signature="b")
1059
def Approve(self, value):
1062
# CheckedOK - method
1063
@dbus.service.method(_interface)
1064
def CheckedOK(self):
1068
@dbus.service.method(_interface)
1073
# StartChecker - method
1074
@dbus.service.method(_interface)
1075
def StartChecker(self):
1077
self.start_checker()
1080
@dbus.service.method(_interface)
1085
# StopChecker - method
1086
@dbus.service.method(_interface)
1087
def StopChecker(self):
1092
# ApprovalPending - property
1093
@dbus_service_property(_interface, signature="b", access="read")
1094
def ApprovalPending_dbus_property(self):
1095
return dbus.Boolean(bool(self.approvals_pending))
1097
# ApprovedByDefault - property
1098
@dbus_service_property(_interface, signature="b",
1100
def ApprovedByDefault_dbus_property(self, value=None):
1101
if value is None: # get
1102
return dbus.Boolean(self.approved_by_default)
1103
self.approved_by_default = bool(value)
1105
# ApprovalDelay - property
1106
@dbus_service_property(_interface, signature="t",
1108
def ApprovalDelay_dbus_property(self, value=None):
1109
if value is None: # get
1110
return dbus.UInt64(self.approval_delay_milliseconds())
1111
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1113
# ApprovalDuration - property
1114
@dbus_service_property(_interface, signature="t",
1116
def ApprovalDuration_dbus_property(self, value=None):
1117
if value is None: # get
1118
return dbus.UInt64(_timedelta_to_milliseconds(
1119
self.approval_duration))
1120
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1123
@dbus_service_property(_interface, signature="s", access="read")
1124
def Name_dbus_property(self):
1125
return dbus.String(self.name)
1127
# Fingerprint - property
1128
@dbus_service_property(_interface, signature="s", access="read")
1129
def Fingerprint_dbus_property(self):
1130
return dbus.String(self.fingerprint)
1133
@dbus_service_property(_interface, signature="s",
1135
def Host_dbus_property(self, value=None):
1136
if value is None: # get
1137
return dbus.String(self.host)
1140
# Created - property
1141
@dbus_service_property(_interface, signature="s", access="read")
1142
def Created_dbus_property(self):
1143
return dbus.String(datetime_to_dbus(self.created))
1145
# LastEnabled - property
1146
@dbus_service_property(_interface, signature="s", access="read")
1147
def LastEnabled_dbus_property(self):
1148
return datetime_to_dbus(self.last_enabled)
1150
# Enabled - property
1151
@dbus_service_property(_interface, signature="b",
1153
def Enabled_dbus_property(self, value=None):
1154
if value is None: # get
1155
return dbus.Boolean(self.enabled)
1161
# LastCheckedOK - property
1162
@dbus_service_property(_interface, signature="s",
1164
def LastCheckedOK_dbus_property(self, value=None):
1165
if value is not None:
1168
return datetime_to_dbus(self.last_checked_ok)
1170
# Expires - property
1171
@dbus_service_property(_interface, signature="s", access="read")
1172
def Expires_dbus_property(self):
1173
return datetime_to_dbus(self.expires)
1175
# LastApprovalRequest - property
1176
@dbus_service_property(_interface, signature="s", access="read")
1177
def LastApprovalRequest_dbus_property(self):
1178
return datetime_to_dbus(self.last_approval_request)
1180
# Timeout - property
1181
@dbus_service_property(_interface, signature="t",
1183
def Timeout_dbus_property(self, value=None):
1184
if value is None: # get
1185
return dbus.UInt64(self.timeout_milliseconds())
1186
self.timeout = datetime.timedelta(0, 0, 0, value)
1187
if getattr(self, "disable_initiator_tag", None) is None:
1189
# Reschedule timeout
1190
gobject.source_remove(self.disable_initiator_tag)
1191
self.disable_initiator_tag = None
1193
time_to_die = _timedelta_to_milliseconds((self
1198
if time_to_die <= 0:
1199
# The timeout has passed
1202
self.expires = (datetime.datetime.utcnow()
1203
+ datetime.timedelta(milliseconds =
1205
self.disable_initiator_tag = (gobject.timeout_add
1206
(time_to_die, self.disable))
1208
# ExtendedTimeout - property
1209
@dbus_service_property(_interface, signature="t",
1211
def ExtendedTimeout_dbus_property(self, value=None):
1212
if value is None: # get
1213
return dbus.UInt64(self.extended_timeout_milliseconds())
1214
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1216
# Interval - property
1217
@dbus_service_property(_interface, signature="t",
1219
def Interval_dbus_property(self, value=None):
1220
if value is None: # get
1221
return dbus.UInt64(self.interval_milliseconds())
1222
self.interval = datetime.timedelta(0, 0, 0, value)
1223
if getattr(self, "checker_initiator_tag", None) is None:
1225
# Reschedule checker run
1226
gobject.source_remove(self.checker_initiator_tag)
1227
self.checker_initiator_tag = (gobject.timeout_add
1228
(value, self.start_checker))
1229
self.start_checker() # Start one now, too
1231
# Checker - property
1232
@dbus_service_property(_interface, signature="s",
1234
def Checker_dbus_property(self, value=None):
1235
if value is None: # get
1236
return dbus.String(self.checker_command)
1237
self.checker_command = value
1239
# CheckerRunning - property
1240
@dbus_service_property(_interface, signature="b",
1242
def CheckerRunning_dbus_property(self, value=None):
1243
if value is None: # get
1244
return dbus.Boolean(self.checker is not None)
1246
self.start_checker()
1250
# ObjectPath - property
1251
@dbus_service_property(_interface, signature="o", access="read")
1252
def ObjectPath_dbus_property(self):
1253
return self.dbus_object_path # is already a dbus.ObjectPath
1256
@dbus_service_property(_interface, signature="ay",
1257
access="write", byte_arrays=True)
1258
def Secret_dbus_property(self, value):
1259
self.secret = str(value)
1264
class ProxyClient(object):
1265
def __init__(self, child_pipe, fpr, address):
1266
self._pipe = child_pipe
1267
self._pipe.send(('init', fpr, address))
1268
if not self._pipe.recv():
1271
def __getattribute__(self, name):
1272
if(name == '_pipe'):
1273
return super(ProxyClient, self).__getattribute__(name)
1274
self._pipe.send(('getattr', name))
1275
data = self._pipe.recv()
1276
if data[0] == 'data':
1278
if data[0] == 'function':
1279
def func(*args, **kwargs):
1280
self._pipe.send(('funcall', name, args, kwargs))
1281
return self._pipe.recv()[1]
1284
def __setattr__(self, name, value):
1285
if(name == '_pipe'):
1286
return super(ProxyClient, self).__setattr__(name, value)
1287
self._pipe.send(('setattr', name, value))
1289
class ClientDBusTransitional(ClientDBus):
1290
__metaclass__ = AlternateDBusNamesMetaclass
1292
class ClientHandler(socketserver.BaseRequestHandler, object):
1293
"""A class to handle client connections.
1295
Instantiated once for each connection to handle it.
303
def still_valid(self, now=None):
304
"""Has the timeout not yet passed for this client?"""
306
now = datetime.datetime.now()
307
if self.last_seen is None:
308
return now < (self.created + self.timeout)
310
return now < (self.last_seen + self.timeout)
313
def peer_certificate(session):
314
"Return the peer's OpenPGP certificate as a bytestring"
315
# If not an OpenPGP certificate...
316
if gnutls.library.functions.gnutls_certificate_type_get\
317
(session._c_object) \
318
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP:
319
# ...do the normal thing
320
return session.peer_certificate
321
list_size = ctypes.c_uint()
322
cert_list = gnutls.library.functions.gnutls_certificate_get_peers\
323
(session._c_object, ctypes.byref(list_size))
324
if list_size.value == 0:
327
return ctypes.string_at(cert.data, cert.size)
330
def fingerprint(openpgp):
331
"Convert an OpenPGP bytestring to a hexdigit fingerprint string"
332
# New empty GnuTLS certificate
333
crt = gnutls.library.types.gnutls_openpgp_crt_t()
334
gnutls.library.functions.gnutls_openpgp_crt_init\
336
# New GnuTLS "datum" with the OpenPGP public key
337
datum = gnutls.library.types.gnutls_datum_t\
338
(ctypes.cast(ctypes.c_char_p(openpgp),
339
ctypes.POINTER(ctypes.c_ubyte)),
340
ctypes.c_uint(len(openpgp)))
341
# Import the OpenPGP public key into the certificate
342
ret = gnutls.library.functions.gnutls_openpgp_crt_import\
345
gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)
346
# New buffer for the fingerprint
347
buffer = ctypes.create_string_buffer(20)
348
buffer_length = ctypes.c_size_t()
349
# Get the fingerprint from the certificate into the buffer
350
gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint\
351
(crt, ctypes.byref(buffer), ctypes.byref(buffer_length))
352
# Deinit the certificate
353
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
354
# Convert the buffer to a Python bytestring
355
fpr = ctypes.string_at(buffer, buffer_length.value)
356
# Convert the bytestring to hexadecimal notation
357
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
361
class tcp_handler(SocketServer.BaseRequestHandler, object):
362
"""A TCP request handler class.
363
Instantiated by IPv6_TCPServer for each request to handle it.
1296
364
Note: This will run in its own forked process."""
1298
366
def handle(self):
1299
with contextlib.closing(self.server.child_pipe) as child_pipe:
1300
logger.info("TCP connection from: %s",
1301
unicode(self.client_address))
1302
logger.debug("Pipe FD: %d",
1303
self.server.child_pipe.fileno())
1305
session = (gnutls.connection
1306
.ClientSession(self.request,
1308
.X509Credentials()))
1310
# Note: gnutls.connection.X509Credentials is really a
1311
# generic GnuTLS certificate credentials object so long as
1312
# no X.509 keys are added to it. Therefore, we can use it
1313
# here despite using OpenPGP certificates.
1315
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1316
# "+AES-256-CBC", "+SHA1",
1317
# "+COMP-NULL", "+CTYPE-OPENPGP",
1319
# Use a fallback default, since this MUST be set.
1320
priority = self.server.gnutls_priority
1321
if priority is None:
1323
(gnutls.library.functions
1324
.gnutls_priority_set_direct(session._c_object,
1327
# Start communication using the Mandos protocol
1328
# Get protocol number
1329
line = self.request.makefile().readline()
1330
logger.debug("Protocol version: %r", line)
1332
if int(line.strip().split()[0]) > 1:
1334
except (ValueError, IndexError, RuntimeError) as error:
1335
logger.error("Unknown protocol version: %s", error)
1338
# Start GnuTLS connection
1341
except gnutls.errors.GNUTLSError as error:
1342
logger.warning("Handshake failed: %s", error)
1343
# Do not run session.bye() here: the session is not
1344
# established. Just abandon the request.
1346
logger.debug("Handshake succeeded")
1348
approval_required = False
1351
fpr = self.fingerprint(self.peer_certificate
1354
gnutls.errors.GNUTLSError) as error:
1355
logger.warning("Bad certificate: %s", error)
1357
logger.debug("Fingerprint: %s", fpr)
1360
client = ProxyClient(child_pipe, fpr,
1361
self.client_address)
1365
if client.approval_delay:
1366
delay = client.approval_delay
1367
client.approvals_pending += 1
1368
approval_required = True
1371
if not client.enabled:
1372
logger.info("Client %s is disabled",
1374
if self.server.use_dbus:
1376
client.Rejected("Disabled")
1379
if client._approved or not client.approval_delay:
1380
#We are approved or approval is disabled
1382
elif client._approved is None:
1383
logger.info("Client %s needs approval",
1385
if self.server.use_dbus:
1387
client.NeedApproval(
1388
client.approval_delay_milliseconds(),
1389
client.approved_by_default)
1391
logger.warning("Client %s was not approved",
1393
if self.server.use_dbus:
1395
client.Rejected("Denied")
1398
#wait until timeout or approved
1399
time = datetime.datetime.now()
1400
client.changedstate.acquire()
1401
(client.changedstate.wait
1402
(float(client._timedelta_to_milliseconds(delay)
1404
client.changedstate.release()
1405
time2 = datetime.datetime.now()
1406
if (time2 - time) >= delay:
1407
if not client.approved_by_default:
1408
logger.warning("Client %s timed out while"
1409
" waiting for approval",
1411
if self.server.use_dbus:
1413
client.Rejected("Approval timed out")
1418
delay -= time2 - time
1421
while sent_size < len(client.secret):
1423
sent = session.send(client.secret[sent_size:])
1424
except gnutls.errors.GNUTLSError as error:
1425
logger.warning("gnutls send failed")
1427
logger.debug("Sent: %d, remaining: %d",
1428
sent, len(client.secret)
1429
- (sent_size + sent))
1432
logger.info("Sending secret to %s", client.name)
1433
# bump the timeout using extended_timeout
1434
client.checked_ok(client.extended_timeout)
1435
if self.server.use_dbus:
1440
if approval_required:
1441
client.approvals_pending -= 1
1444
except gnutls.errors.GNUTLSError as error:
1445
logger.warning("GnuTLS bye failed")
1448
def peer_certificate(session):
1449
"Return the peer's OpenPGP certificate as a bytestring"
1450
# If not an OpenPGP certificate...
1451
if (gnutls.library.functions
1452
.gnutls_certificate_type_get(session._c_object)
1453
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1454
# ...do the normal thing
1455
return session.peer_certificate
1456
list_size = ctypes.c_uint(1)
1457
cert_list = (gnutls.library.functions
1458
.gnutls_certificate_get_peers
1459
(session._c_object, ctypes.byref(list_size)))
1460
if not bool(cert_list) and list_size.value != 0:
1461
raise gnutls.errors.GNUTLSError("error getting peer"
1463
if list_size.value == 0:
1466
return ctypes.string_at(cert.data, cert.size)
1469
def fingerprint(openpgp):
1470
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1471
# New GnuTLS "datum" with the OpenPGP public key
1472
datum = (gnutls.library.types
1473
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1476
ctypes.c_uint(len(openpgp))))
1477
# New empty GnuTLS certificate
1478
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1479
(gnutls.library.functions
1480
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
1481
# Import the OpenPGP public key into the certificate
1482
(gnutls.library.functions
1483
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1484
gnutls.library.constants
1485
.GNUTLS_OPENPGP_FMT_RAW))
1486
# Verify the self signature in the key
1487
crtverify = ctypes.c_uint()
1488
(gnutls.library.functions
1489
.gnutls_openpgp_crt_verify_self(crt, 0,
1490
ctypes.byref(crtverify)))
1491
if crtverify.value != 0:
1492
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1493
raise (gnutls.errors.CertificateSecurityError
1495
# New buffer for the fingerprint
1496
buf = ctypes.create_string_buffer(20)
1497
buf_len = ctypes.c_size_t()
1498
# Get the fingerprint from the certificate into the buffer
1499
(gnutls.library.functions
1500
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1501
ctypes.byref(buf_len)))
1502
# Deinit the certificate
1503
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1504
# Convert the buffer to a Python bytestring
1505
fpr = ctypes.string_at(buf, buf_len.value)
1506
# Convert the bytestring to hexadecimal notation
1507
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
1511
class MultiprocessingMixIn(object):
1512
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
1513
def sub_process_main(self, request, address):
1515
self.finish_request(request, address)
1517
self.handle_error(request, address)
1518
self.close_request(request)
1520
def process_request(self, request, address):
1521
"""Start a new process to process the request."""
1522
proc = multiprocessing.Process(target = self.sub_process_main,
1529
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1530
""" adds a pipe to the MixIn """
1531
def process_request(self, request, client_address):
1532
"""Overrides and wraps the original process_request().
1534
This function creates a new pipe in self.pipe
1536
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1538
proc = MultiprocessingMixIn.process_request(self, request,
1540
self.child_pipe.close()
1541
self.add_pipe(parent_pipe, proc)
1543
def add_pipe(self, parent_pipe, proc):
1544
"""Dummy function; override as necessary"""
1545
raise NotImplementedError
1548
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1549
socketserver.TCPServer, object):
1550
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
367
logger.debug(u"TCP connection from: %s",
368
unicode(self.client_address))
369
session = gnutls.connection.ClientSession(self.request,
373
#priority = ':'.join(("NONE", "+VERS-TLS1.1", "+AES-256-CBC",
374
# "+SHA1", "+COMP-NULL", "+CTYPE-OPENPGP",
377
if self.server.options.priority:
378
priority = self.server.options.priority
379
gnutls.library.functions.gnutls_priority_set_direct\
380
(session._c_object, priority, None);
384
except gnutls.errors.GNUTLSError, error:
385
logger.debug(u"Handshake failed: %s", error)
386
# Do not run session.bye() here: the session is not
387
# established. Just abandon the request.
390
fpr = fingerprint(peer_certificate(session))
391
except (TypeError, gnutls.errors.GNUTLSError), error:
392
logger.debug(u"Bad certificate: %s", error)
395
logger.debug(u"Fingerprint: %s", fpr)
397
for c in self.server.clients:
398
if c.fingerprint == fpr:
401
# Have to check if client.still_valid(), since it is possible
402
# that the client timed out while establishing the GnuTLS
404
if (not client) or (not client.still_valid()):
406
logger.debug(u"Client %(name)s is invalid",
409
logger.debug(u"Client not found for fingerprint: %s",
414
while sent_size < len(client.secret):
415
sent = session.send(client.secret[sent_size:])
416
logger.debug(u"Sent: %d, remaining: %d",
417
sent, len(client.secret)
418
- (sent_size + sent))
423
class IPv6_TCPServer(SocketServer.ForkingTCPServer, object):
424
"""IPv6 TCP server. Accepts 'None' as address and/or port.
1553
enabled: Boolean; whether this server is activated yet
1554
interface: None or a network interface name (string)
1555
use_ipv6: Boolean; to use IPv6 or not
426
options: Command line options
427
clients: Set() of Client objects
1557
def __init__(self, server_address, RequestHandlerClass,
1558
interface=None, use_ipv6=True):
1559
self.interface = interface
1561
self.address_family = socket.AF_INET6
1562
socketserver.TCPServer.__init__(self, server_address,
1563
RequestHandlerClass)
429
address_family = socket.AF_INET6
430
def __init__(self, *args, **kwargs):
431
if "options" in kwargs:
432
self.options = kwargs["options"]
433
del kwargs["options"]
434
if "clients" in kwargs:
435
self.clients = kwargs["clients"]
436
del kwargs["clients"]
437
return super(type(self), self).__init__(*args, **kwargs)
1564
438
def server_bind(self):
1565
439
"""This overrides the normal server_bind() function
1566
440
to bind to an interface if one was specified, and also NOT to
1567
441
bind to an address or port if they were not specified."""
1568
if self.interface is not None:
1569
if SO_BINDTODEVICE is None:
1570
logger.error("SO_BINDTODEVICE does not exist;"
1571
" cannot bind to interface %s",
1575
self.socket.setsockopt(socket.SOL_SOCKET,
1579
except socket.error as error:
1580
if error[0] == errno.EPERM:
1581
logger.error("No permission to"
1582
" bind to interface %s",
1584
elif error[0] == errno.ENOPROTOOPT:
1585
logger.error("SO_BINDTODEVICE not available;"
1586
" cannot bind to interface %s",
442
if self.options.interface:
443
if not hasattr(socket, "SO_BINDTODEVICE"):
444
# From /usr/include/asm-i486/socket.h
445
socket.SO_BINDTODEVICE = 25
447
self.socket.setsockopt(socket.SOL_SOCKET,
448
socket.SO_BINDTODEVICE,
449
self.options.interface)
450
except socket.error, error:
451
if error[0] == errno.EPERM:
452
logger.warning(u"No permission to"
453
u" bind to interface %s",
454
self.options.interface)
1590
457
# Only bind(2) the socket if we really need to.
1591
458
if self.server_address[0] or self.server_address[1]:
1592
459
if not self.server_address[0]:
1593
if self.address_family == socket.AF_INET6:
1594
any_address = "::" # in6addr_any
1596
any_address = socket.INADDR_ANY
1597
self.server_address = (any_address,
461
self.server_address = (in6addr_any,
1598
462
self.server_address[1])
1599
elif not self.server_address[1]:
463
elif self.server_address[1] is None:
1600
464
self.server_address = (self.server_address[0],
1602
# if self.interface:
1603
# self.server_address = (self.server_address[0],
1608
return socketserver.TCPServer.server_bind(self)
1611
class MandosServer(IPv6_TCPServer):
1615
clients: set of Client objects
1616
gnutls_priority GnuTLS priority string
1617
use_dbus: Boolean; to emit D-Bus signals or not
1619
Assumes a gobject.MainLoop event loop.
1621
def __init__(self, server_address, RequestHandlerClass,
1622
interface=None, use_ipv6=True, clients=None,
1623
gnutls_priority=None, use_dbus=True):
1624
self.enabled = False
1625
self.clients = clients
1626
if self.clients is None:
1627
self.clients = set()
1628
self.use_dbus = use_dbus
1629
self.gnutls_priority = gnutls_priority
1630
IPv6_TCPServer.__init__(self, server_address,
1631
RequestHandlerClass,
1632
interface = interface,
1633
use_ipv6 = use_ipv6)
1634
def server_activate(self):
1636
return socketserver.TCPServer.server_activate(self)
1641
def add_pipe(self, parent_pipe, proc):
1642
# Call "handle_ipc" for both data and EOF events
1643
gobject.io_add_watch(parent_pipe.fileno(),
1644
gobject.IO_IN | gobject.IO_HUP,
1645
functools.partial(self.handle_ipc,
1650
def handle_ipc(self, source, condition, parent_pipe=None,
1651
proc = None, client_object=None):
1653
gobject.IO_IN: "IN", # There is data to read.
1654
gobject.IO_OUT: "OUT", # Data can be written (without
1656
gobject.IO_PRI: "PRI", # There is urgent data to read.
1657
gobject.IO_ERR: "ERR", # Error condition.
1658
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1659
# broken, usually for pipes and
1662
conditions_string = ' | '.join(name
1664
condition_names.iteritems()
1665
if cond & condition)
1666
# error, or the other end of multiprocessing.Pipe has closed
1667
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
1668
# Wait for other process to exit
1672
# Read a request from the child
1673
request = parent_pipe.recv()
1674
command = request[0]
1676
if command == 'init':
1678
address = request[2]
1680
for c in self.clients:
1681
if c.fingerprint == fpr:
1685
logger.info("Client not found for fingerprint: %s, ad"
1686
"dress: %s", fpr, address)
1689
mandos_dbus_service.ClientNotFound(fpr,
1691
parent_pipe.send(False)
1694
gobject.io_add_watch(parent_pipe.fileno(),
1695
gobject.IO_IN | gobject.IO_HUP,
1696
functools.partial(self.handle_ipc,
1702
parent_pipe.send(True)
1703
# remove the old hook in favor of the new above hook on
1706
if command == 'funcall':
1707
funcname = request[1]
1711
parent_pipe.send(('data', getattr(client_object,
1715
if command == 'getattr':
1716
attrname = request[1]
1717
if callable(client_object.__getattribute__(attrname)):
1718
parent_pipe.send(('function',))
1720
parent_pipe.send(('data', client_object
1721
.__getattribute__(attrname)))
1723
if command == 'setattr':
1724
attrname = request[1]
1726
setattr(client_object, attrname, value)
466
return super(type(self), self).server_bind()
1731
469
def string_to_delta(interval):
1732
470
"""Parse a string and return a datetime.timedelta
1734
472
>>> string_to_delta('7d')
1735
473
datetime.timedelta(7)
1736
474
>>> string_to_delta('60s')
613
def killme(status = 0):
614
logger.debug("Stopping server with exit status %d", status)
616
if main_loop_started:
1821
##################################################################
1822
# Parsing of options, both command line and config file
1824
parser = argparse.ArgumentParser()
1825
parser.add_argument("-v", "--version", action="version",
1826
version = "%%(prog)s %s" % version,
1827
help="show version number and exit")
1828
parser.add_argument("-i", "--interface", metavar="IF",
1829
help="Bind to interface IF")
1830
parser.add_argument("-a", "--address",
1831
help="Address to listen for requests on")
1832
parser.add_argument("-p", "--port", type=int,
1833
help="Port number to receive requests on")
1834
parser.add_argument("--check", action="store_true",
1835
help="Run self-test")
1836
parser.add_argument("--debug", action="store_true",
1837
help="Debug mode; run in foreground and log"
1839
parser.add_argument("--debuglevel", metavar="LEVEL",
1840
help="Debug level for stdout output")
1841
parser.add_argument("--priority", help="GnuTLS"
1842
" priority string (see GnuTLS documentation)")
1843
parser.add_argument("--servicename",
1844
metavar="NAME", help="Zeroconf service name")
1845
parser.add_argument("--configdir",
1846
default="/etc/mandos", metavar="DIR",
1847
help="Directory to search for configuration"
1849
parser.add_argument("--no-dbus", action="store_false",
1850
dest="use_dbus", help="Do not provide D-Bus"
1851
" system bus interface")
1852
parser.add_argument("--no-ipv6", action="store_false",
1853
dest="use_ipv6", help="Do not use IPv6")
1854
options = parser.parse_args()
625
global main_loop_started
626
main_loop_started = False
628
parser = OptionParser()
629
parser.add_option("-i", "--interface", type="string",
630
default=None, metavar="IF",
631
help="Bind to interface IF")
632
parser.add_option("-a", "--address", type="string", default=None,
633
help="Address to listen for requests on")
634
parser.add_option("-p", "--port", type="int", default=None,
635
help="Port number to receive requests on")
636
parser.add_option("--check", action="store_true", default=False,
637
help="Run self-test")
638
parser.add_option("--debug", action="store_true", default=False,
640
parser.add_option("--priority", type="string",
642
help="GnuTLS priority string"
643
" (see GnuTLS documentation)")
644
parser.add_option("--servicename", type="string",
645
default="Mandos", help="Zeroconf service name")
646
(options, args) = parser.parse_args()
1856
648
if options.check:
1858
650
doctest.testmod()
1861
# Default values for config file for server-global settings
1862
server_defaults = { "interface": "",
1867
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1868
"servicename": "Mandos",
1874
# Parse config file for server-global settings
1875
server_config = configparser.SafeConfigParser(server_defaults)
1877
server_config.read(os.path.join(options.configdir,
1879
# Convert the SafeConfigParser object to a dict
1880
server_settings = server_config.defaults()
1881
# Use the appropriate methods on the non-string config options
1882
for option in ("debug", "use_dbus", "use_ipv6"):
1883
server_settings[option] = server_config.getboolean("DEFAULT",
1885
if server_settings["port"]:
1886
server_settings["port"] = server_config.getint("DEFAULT",
1890
# Override the settings from the config file with command line
1892
for option in ("interface", "address", "port", "debug",
1893
"priority", "servicename", "configdir",
1894
"use_dbus", "use_ipv6", "debuglevel"):
1895
value = getattr(options, option)
1896
if value is not None:
1897
server_settings[option] = value
1899
# Force all strings to be unicode
1900
for option in server_settings.keys():
1901
if type(server_settings[option]) is str:
1902
server_settings[option] = unicode(server_settings[option])
1903
# Now we have our good server settings in "server_settings"
1905
##################################################################
1908
debug = server_settings["debug"]
1909
debuglevel = server_settings["debuglevel"]
1910
use_dbus = server_settings["use_dbus"]
1911
use_ipv6 = server_settings["use_ipv6"]
1913
if server_settings["servicename"] != "Mandos":
1914
syslogger.setFormatter(logging.Formatter
1915
('Mandos (%s) [%%(process)d]:'
1916
' %%(levelname)s: %%(message)s'
1917
% server_settings["servicename"]))
1919
# Parse config file with clients
1920
client_defaults = { "timeout": "5m",
1921
"extended_timeout": "15m",
1923
"checker": "fping -q -- %%(host)s",
1925
"approval_delay": "0s",
1926
"approval_duration": "1s",
1928
client_config = configparser.SafeConfigParser(client_defaults)
1929
client_config.read(os.path.join(server_settings["configdir"],
1932
global mandos_dbus_service
1933
mandos_dbus_service = None
1935
tcp_server = MandosServer((server_settings["address"],
1936
server_settings["port"]),
1938
interface=(server_settings["interface"]
1942
server_settings["priority"],
1945
pidfilename = "/var/run/mandos.pid"
1947
pidfile = open(pidfilename, "w")
1949
logger.error("Could not open file %r", pidfilename)
1952
uid = pwd.getpwnam("_mandos").pw_uid
1953
gid = pwd.getpwnam("_mandos").pw_gid
1956
uid = pwd.getpwnam("mandos").pw_uid
1957
gid = pwd.getpwnam("mandos").pw_gid
1960
uid = pwd.getpwnam("nobody").pw_uid
1961
gid = pwd.getpwnam("nobody").pw_gid
1968
except OSError as error:
1969
if error[0] != errno.EPERM:
1972
if not debug and not debuglevel:
1973
syslogger.setLevel(logging.WARNING)
1974
console.setLevel(logging.WARNING)
1976
level = getattr(logging, debuglevel.upper())
1977
syslogger.setLevel(level)
1978
console.setLevel(level)
1981
# Enable all possible GnuTLS debugging
1983
# "Use a log level over 10 to enable all debugging options."
1985
gnutls.library.functions.gnutls_global_set_log_level(11)
1987
@gnutls.library.types.gnutls_log_func
1988
def debug_gnutls(level, string):
1989
logger.debug("GnuTLS: %s", string[:-1])
1991
(gnutls.library.functions
1992
.gnutls_global_set_log_function(debug_gnutls))
1994
# Redirect stdin so all checkers get /dev/null
1995
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1996
os.dup2(null, sys.stdin.fileno())
2000
# No console logging
2001
logger.removeHandler(console)
2003
# Need to fork before connecting to D-Bus
2005
# Close all input and output, do double fork, etc.
654
defaults = { "timeout": "1h",
656
"checker": "fping -q -- %%(fqdn)s",
658
client_config = ConfigParser.SafeConfigParser(defaults)
659
#client_config.readfp(open("global.conf"), "global.conf")
660
client_config.read("mandos-clients.conf")
663
serviceName = options.servicename;
2008
665
global main_loop
2009
668
# From the Avahi example code
2010
669
DBusGMainLoop(set_as_default=True )
2011
670
main_loop = gobject.MainLoop()
2012
671
bus = dbus.SystemBus()
672
server = dbus.Interface(
673
bus.get_object( avahi.DBUS_NAME, avahi.DBUS_PATH_SERVER ),
674
avahi.DBUS_INTERFACE_SERVER )
2013
675
# End of Avahi example code
2016
bus_name = dbus.service.BusName("se.recompile.Mandos",
2017
bus, do_not_queue=True)
2018
old_bus_name = (dbus.service.BusName
2019
("se.bsnet.fukt.Mandos", bus,
2021
except dbus.exceptions.NameExistsException as e:
2022
logger.error(unicode(e) + ", disabling D-Bus")
2024
server_settings["use_dbus"] = False
2025
tcp_server.use_dbus = False
2026
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2027
service = AvahiService(name = server_settings["servicename"],
2028
servicetype = "_mandos._tcp",
2029
protocol = protocol, bus = bus)
2030
if server_settings["interface"]:
2031
service.interface = (if_nametoindex
2032
(str(server_settings["interface"])))
2034
global multiprocessing_manager
2035
multiprocessing_manager = multiprocessing.Manager()
2037
client_class = Client
2039
client_class = functools.partial(ClientDBusTransitional,
2041
def client_config_items(config, section):
2042
special_settings = {
2043
"approved_by_default":
2044
lambda: config.getboolean(section,
2045
"approved_by_default"),
2047
for name, value in config.items(section):
2049
yield (name, special_settings[name]())
2053
tcp_server.clients.update(set(
2054
client_class(name = section,
2055
config= dict(client_config_items(
2056
client_config, section)))
2057
for section in client_config.sections()))
2058
if not tcp_server.clients:
2059
logger.warning("No clients defined")
677
debug = options.debug
680
console = logging.StreamHandler()
681
# console.setLevel(logging.DEBUG)
682
console.setFormatter(logging.Formatter\
683
('%(levelname)s: %(message)s'))
684
logger.addHandler(console)
688
def remove_from_clients(client):
689
clients.remove(client)
691
logger.debug(u"No clients left, exiting")
694
clients.update(Set(Client(name=section,
695
stop_hook = remove_from_clients,
696
**(dict(client_config\
698
for section in client_config.sections()))
2065
pidfile.write(str(pid) + "\n".encode("utf-8"))
2068
logger.error("Could not write to file %r with PID %d",
2071
# "pidfile" was never created
2075
signal.signal(signal.SIGINT, signal.SIG_IGN)
2077
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2078
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2081
class MandosDBusService(dbus.service.Object):
2082
"""A D-Bus proxy object"""
2084
dbus.service.Object.__init__(self, bus, "/")
2085
_interface = "se.recompile.Mandos"
2087
@dbus.service.signal(_interface, signature="o")
2088
def ClientAdded(self, objpath):
2092
@dbus.service.signal(_interface, signature="ss")
2093
def ClientNotFound(self, fingerprint, address):
2097
@dbus.service.signal(_interface, signature="os")
2098
def ClientRemoved(self, objpath, name):
2102
@dbus.service.method(_interface, out_signature="ao")
2103
def GetAllClients(self):
2105
return dbus.Array(c.dbus_object_path
2106
for c in tcp_server.clients)
2108
@dbus.service.method(_interface,
2109
out_signature="a{oa{sv}}")
2110
def GetAllClientsWithProperties(self):
2112
return dbus.Dictionary(
2113
((c.dbus_object_path, c.GetAll(""))
2114
for c in tcp_server.clients),
2117
@dbus.service.method(_interface, in_signature="o")
2118
def RemoveClient(self, object_path):
2120
for c in tcp_server.clients:
2121
if c.dbus_object_path == object_path:
2122
tcp_server.clients.remove(c)
2123
c.remove_from_connection()
2124
# Don't signal anything except ClientRemoved
2125
c.disable(quiet=True)
2127
self.ClientRemoved(object_path, c.name)
2129
raise KeyError(object_path)
2133
class MandosDBusServiceTransitional(MandosDBusService):
2134
__metaclass__ = AlternateDBusNamesMetaclass
2135
mandos_dbus_service = MandosDBusServiceTransitional()
2138
704
"Cleanup function; run on exit"
2141
multiprocessing.active_children()
2142
while tcp_server.clients:
2143
client = tcp_server.clients.pop()
2145
client.remove_from_connection()
2146
client.disable_hook = None
2147
# Don't signal anything except ClientRemoved
2148
client.disable(quiet=True)
2151
mandos_dbus_service.ClientRemoved(client
2155
atexit.register(cleanup)
2157
for client in tcp_server.clients:
2160
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2164
tcp_server.server_activate()
2166
# Find out what port we got
2167
service.port = tcp_server.socket.getsockname()[1]
2169
logger.info("Now listening on address %r, port %d,"
2170
" flowinfo %d, scope_id %d"
2171
% tcp_server.socket.getsockname())
2173
logger.info("Now listening on address %r, port %d"
2174
% tcp_server.socket.getsockname())
2176
#service.interface = tcp_server.socket.getsockname()[3]
2179
706
# From the Avahi example code
2182
except dbus.exceptions.DBusException as error:
2183
logger.critical("DBusException: %s", error)
707
if not group is None:
2186
710
# End of Avahi example code
2188
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2189
lambda *args, **kwargs:
2190
(tcp_server.handle_request
2191
(*args[2:], **kwargs) or True))
713
client = clients.pop()
714
client.stop_hook = None
717
atexit.register(cleanup)
720
signal.signal(signal.SIGINT, signal.SIG_IGN)
721
signal.signal(signal.SIGHUP, lambda signum, frame: killme())
722
signal.signal(signal.SIGTERM, lambda signum, frame: killme())
724
for client in clients:
727
tcp_server = IPv6_TCPServer((options.address, options.port),
731
# Find out what random port we got
733
servicePort = tcp_server.socket.getsockname()[1]
734
logger.debug(u"Now listening on port %d", servicePort)
736
if options.interface is not None:
737
global serviceInterface
738
serviceInterface = if_nametoindex(options.interface)
740
# From the Avahi example code
741
server.connect_to_signal("StateChanged", server_state_changed)
743
server_state_changed(server.GetState())
744
except dbus.exceptions.DBusException, error:
745
logger.critical(u"DBusException: %s", error)
747
# End of Avahi example code
749
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
750
lambda *args, **kwargs:
751
tcp_server.handle_request(*args[2:],
2193
754
logger.debug("Starting main loop")
755
main_loop_started = True
2195
except AvahiError as error:
2196
logger.critical("AvahiError: %s", error)
2199
757
except KeyboardInterrupt:
2201
print("", file=sys.stderr)
2202
logger.debug("Server received KeyboardInterrupt")
2203
logger.debug("Server exiting")
2204
# Must run before the D-Bus bus name gets deregistered
2208
763
if __name__ == '__main__':