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- Committer: Teddy Hogeborn
- Date: 2009-04-01 03:37:45 UTC
- Revision ID: teddy@fukt.bsnet.se-20090401033745-c89k6bij5opdm1rk
* mandos (ClientDBus.__del__): Bug fix: Correct mispasted code, and do
not try to call
dbus.service.Object.__del__() if it
does not exist.
(ClientDBus.start_checker): Simplify logic.
not try to call
dbus.service.Object.__del__() if it
does not exist.
(ClientDBus.start_checker): Simplify logic.
- files removed:
- dbus-mandos.conf
- files modified:
- Makefile
added
removed
mandos
6
6
# This program is partly derived from an example program for an Avahi
7
7
# service publisher, downloaded from
8
8
# <http://avahi.org/wiki/PythonPublishExample>. This includes the
9
# methods "add", "remove", "server_state_changed",
10
# "entry_group_state_changed", "cleanup", and "activate" in the
11
# "AvahiService" class, and some lines in "main".
9
# methods "add" and "remove" in the "AvahiService" class, the
10
# "server_state_changed" and "entry_group_state_changed" functions,
11
# and some lines in "main".
12
12
#
13
13
# Everything else is
14
14
# Copyright © 2008,2009 Teddy Hogeborn
33
33
34
34
from __future__ import division, with_statement, absolute_import
35
35
36
import SocketServer as socketserver
36
import SocketServer
37
37
import socket
38
38
import optparse
39
39
import datetime
44
44
import gnutls.library.functions
45
45
import gnutls.library.constants
46
46
import gnutls.library.types
47
import ConfigParser as configparser
47
import ConfigParser
48
48
import sys
49
49
import re
50
50
import os
51
51
import signal
52
from sets import Set
52
53
import subprocess
53
54
import atexit
54
55
import stat
55
56
import logging
56
57
import logging.handlers
57
58
import pwd
58
import contextlib
59
import struct
60
import fcntl
61
import functools
62
import cPickle as pickle
63
import select
59
from contextlib import closing
64
60
65
61
import dbus
66
62
import dbus.service
69
65
from dbus.mainloop.glib import DBusGMainLoop
70
66
import ctypes
71
67
import ctypes.util
72
import xml.dom.minidom
73
import inspect
74
75
try:
76
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
77
except AttributeError:
78
try:
79
from IN import SO_BINDTODEVICE
80
except ImportError:
81
SO_BINDTODEVICE = None
82
83
84
version = "1.0.14"
85
86
logger = logging.Logger(u'mandos')
68
69
version = "1.0.8"
70
71
logger = logging.Logger('mandos')
87
72
syslogger = (logging.handlers.SysLogHandler
88
73
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
89
74
address = "/dev/log"))
90
75
syslogger.setFormatter(logging.Formatter
91
(u'Mandos [%(process)d]: %(levelname)s:'
92
u' %(message)s'))
76
('Mandos [%(process)d]: %(levelname)s:'
77
' %(message)s'))
93
78
logger.addHandler(syslogger)
94
79
95
80
console = logging.StreamHandler()
96
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
97
u' %(levelname)s:'
98
u' %(message)s'))
81
console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'
82
' %(levelname)s: %(message)s'))
99
83
logger.addHandler(console)
100
84
101
85
class AvahiError(Exception):
114
98
115
99
class AvahiService(object):
116
100
"""An Avahi (Zeroconf) service.
117
118
101
Attributes:
119
102
interface: integer; avahi.IF_UNSPEC or an interface index.
120
103
Used to optionally bind to the specified interface.
121
name: string; Example: u'Mandos'
122
type: string; Example: u'_mandos._tcp'.
104
name: string; Example: 'Mandos'
105
type: string; Example: '_mandos._tcp'.
123
106
See <http://www.dns-sd.org/ServiceTypes.html>
124
107
port: integer; what port to announce
125
108
TXT: list of strings; TXT record for the service
128
111
max_renames: integer; maximum number of renames
129
112
rename_count: integer; counter so we only rename after collisions
130
113
a sensible number of times
131
group: D-Bus Entry Group
132
server: D-Bus Server
133
bus: dbus.SystemBus()
134
114
"""
135
115
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
136
116
servicetype = None, port = None, TXT = None,
137
domain = u"", host = u"", max_renames = 32768,
138
protocol = avahi.PROTO_UNSPEC, bus = None):
117
domain = "", host = "", max_renames = 32768,
118
protocol = avahi.PROTO_UNSPEC):
139
119
self.interface = interface
140
120
self.name = name
141
121
self.type = servicetype
146
126
self.rename_count = 0
147
127
self.max_renames = max_renames
148
128
self.protocol = protocol
149
self.group = None # our entry group
150
self.server = None
151
self.bus = bus
152
129
def rename(self):
153
130
"""Derived from the Avahi example code"""
154
131
if self.rename_count >= self.max_renames:
156
133
u" after %i retries, exiting.",
157
134
self.rename_count)
158
135
raise AvahiServiceError(u"Too many renames")
159
self.name = self.server.GetAlternativeServiceName(self.name)
136
self.name = server.GetAlternativeServiceName(self.name)
160
137
logger.info(u"Changing Zeroconf service name to %r ...",
161
unicode(self.name))
138
str(self.name))
162
139
syslogger.setFormatter(logging.Formatter
163
(u'Mandos (%s) [%%(process)d]:'
164
u' %%(levelname)s: %%(message)s'
140
('Mandos (%s) [%%(process)d]:'
141
' %%(levelname)s: %%(message)s'
165
142
% self.name))
166
143
self.remove()
167
144
self.add()
168
145
self.rename_count += 1
169
146
def remove(self):
170
147
"""Derived from the Avahi example code"""
171
if self.group is not None:
172
self.group.Reset()
148
if group is not None:
149
group.Reset()
173
150
def add(self):
174
151
"""Derived from the Avahi example code"""
175
if self.group is None:
176
self.group = dbus.Interface(
177
self.bus.get_object(avahi.DBUS_NAME,
178
self.server.EntryGroupNew()),
179
avahi.DBUS_INTERFACE_ENTRY_GROUP)
180
self.group.connect_to_signal('StateChanged',
181
self
182
.entry_group_state_changed)
152
global group
153
if group is None:
154
group = dbus.Interface(bus.get_object
155
(avahi.DBUS_NAME,
156
server.EntryGroupNew()),
157
avahi.DBUS_INTERFACE_ENTRY_GROUP)
158
group.connect_to_signal('StateChanged',
159
entry_group_state_changed)
183
160
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
184
self.name, self.type)
185
self.group.AddService(
186
self.interface,
187
self.protocol,
188
dbus.UInt32(0), # flags
189
self.name, self.type,
190
self.domain, self.host,
191
dbus.UInt16(self.port),
192
avahi.string_array_to_txt_array(self.TXT))
193
self.group.Commit()
194
def entry_group_state_changed(self, state, error):
195
"""Derived from the Avahi example code"""
196
logger.debug(u"Avahi entry group state change: %i", state)
197
198
if state == avahi.ENTRY_GROUP_ESTABLISHED:
199
logger.debug(u"Zeroconf service established.")
200
elif state == avahi.ENTRY_GROUP_COLLISION:
201
logger.warning(u"Zeroconf service name collision.")
202
self.rename()
203
elif state == avahi.ENTRY_GROUP_FAILURE:
204
logger.critical(u"Avahi: Error in group state changed %s",
205
unicode(error))
206
raise AvahiGroupError(u"State changed: %s"
207
% unicode(error))
208
def cleanup(self):
209
"""Derived from the Avahi example code"""
210
if self.group is not None:
211
self.group.Free()
212
self.group = None
213
def server_state_changed(self, state):
214
"""Derived from the Avahi example code"""
215
logger.debug(u"Avahi server state change: %i", state)
216
if state == avahi.SERVER_COLLISION:
217
logger.error(u"Zeroconf server name collision")
218
self.remove()
219
elif state == avahi.SERVER_RUNNING:
220
self.add()
221
def activate(self):
222
"""Derived from the Avahi example code"""
223
if self.server is None:
224
self.server = dbus.Interface(
225
self.bus.get_object(avahi.DBUS_NAME,
226
avahi.DBUS_PATH_SERVER),
227
avahi.DBUS_INTERFACE_SERVER)
228
self.server.connect_to_signal(u"StateChanged",
229
self.server_state_changed)
230
self.server_state_changed(self.server.GetState())
161
service.name, service.type)
162
group.AddService(
163
self.interface, # interface
164
self.protocol, # protocol
165
dbus.UInt32(0), # flags
166
self.name, self.type,
167
self.domain, self.host,
168
dbus.UInt16(self.port),
169
avahi.string_array_to_txt_array(self.TXT))
170
group.Commit()
171
172
# From the Avahi example code:
173
group = None # our entry group
174
# End of Avahi example code
175
176
177
def _datetime_to_dbus(dt, variant_level=0):
178
"""Convert a UTC datetime.datetime() to a D-Bus type."""
179
return dbus.String(dt.isoformat(), variant_level=variant_level)
231
180
232
181
233
182
class Client(object):
234
183
"""A representation of a client host served by this server.
235
236
184
Attributes:
237
185
name: string; from the config file, used in log messages and
238
186
D-Bus identifiers
245
193
enabled: bool()
246
194
last_checked_ok: datetime.datetime(); (UTC) or None
247
195
timeout: datetime.timedelta(); How long from last_checked_ok
248
until this client is disabled
196
until this client is invalid
249
197
interval: datetime.timedelta(); How often to start a new checker
250
198
disable_hook: If set, called by disable() as disable_hook(self)
251
199
checker: subprocess.Popen(); a running checker process used
252
200
to see if the client lives.
253
201
'None' if no process is running.
254
202
checker_initiator_tag: a gobject event source tag, or None
255
disable_initiator_tag: - '' -
203
disable_initiator_tag: - '' -
256
204
checker_callback_tag: - '' -
257
205
checker_command: string; External command which is run to check if
258
206
client lives. %() expansions are done at
260
208
instance %(name)s can be used in the command.
261
209
current_checker_command: string; current running checker_command
262
210
"""
263
264
@staticmethod
265
def _timedelta_to_milliseconds(td):
266
"Convert a datetime.timedelta() to milliseconds"
267
return ((td.days * 24 * 60 * 60 * 1000)
268
+ (td.seconds * 1000)
269
+ (td.microseconds // 1000))
270
271
211
def timeout_milliseconds(self):
272
212
"Return the 'timeout' attribute in milliseconds"
273
return self._timedelta_to_milliseconds(self.timeout)
213
return ((self.timeout.days * 24 * 60 * 60 * 1000)
214
+ (self.timeout.seconds * 1000)
215
+ (self.timeout.microseconds // 1000))
274
216
275
217
def interval_milliseconds(self):
276
218
"Return the 'interval' attribute in milliseconds"
277
return self._timedelta_to_milliseconds(self.interval)
219
return ((self.interval.days * 24 * 60 * 60 * 1000)
220
+ (self.interval.seconds * 1000)
221
+ (self.interval.microseconds // 1000))
278
222
279
223
def __init__(self, name = None, disable_hook=None, config=None):
280
224
"""Note: the 'checker' key in 'config' sets the
287
231
# Uppercase and remove spaces from fingerprint for later
288
232
# comparison purposes with return value from the fingerprint()
289
233
# function
290
self.fingerprint = (config[u"fingerprint"].upper()
234
self.fingerprint = (config["fingerprint"].upper()
291
235
.replace(u" ", u""))
292
236
logger.debug(u" Fingerprint: %s", self.fingerprint)
293
if u"secret" in config:
294
self.secret = config[u"secret"].decode(u"base64")
295
elif u"secfile" in config:
296
with open(os.path.expanduser(os.path.expandvars
297
(config[u"secfile"])),
298
"rb") as secfile:
237
if "secret" in config:
238
self.secret = config["secret"].decode(u"base64")
239
elif "secfile" in config:
240
with closing(open(os.path.expanduser
241
(os.path.expandvars
242
(config["secfile"])))) as secfile:
299
243
self.secret = secfile.read()
300
244
else:
301
245
raise TypeError(u"No secret or secfile for client %s"
302
246
% self.name)
303
self.host = config.get(u"host", u"")
247
self.host = config.get("host", "")
304
248
self.created = datetime.datetime.utcnow()
305
249
self.enabled = False
306
250
self.last_enabled = None
307
251
self.last_checked_ok = None
308
self.timeout = string_to_delta(config[u"timeout"])
309
self.interval = string_to_delta(config[u"interval"])
252
self.timeout = string_to_delta(config["timeout"])
253
self.interval = string_to_delta(config["interval"])
310
254
self.disable_hook = disable_hook
311
255
self.checker = None
312
256
self.checker_initiator_tag = None
313
257
self.disable_initiator_tag = None
314
258
self.checker_callback_tag = None
315
self.checker_command = config[u"checker"]
259
self.checker_command = config["checker"]
316
260
self.current_checker_command = None
317
261
self.last_connect = None
318
262
319
263
def enable(self):
320
264
"""Start this client's checker and timeout hooks"""
321
if getattr(self, u"enabled", False):
322
# Already enabled
323
return
324
265
self.last_enabled = datetime.datetime.utcnow()
325
266
# Schedule a new checker to be started an 'interval' from now,
326
267
# and every interval from then on.
327
268
self.checker_initiator_tag = (gobject.timeout_add
328
269
(self.interval_milliseconds(),
329
270
self.start_checker))
271
# Also start a new checker *right now*.
272
self.start_checker()
330
273
# Schedule a disable() when 'timeout' has passed
331
274
self.disable_initiator_tag = (gobject.timeout_add
332
275
(self.timeout_milliseconds(),
333
276
self.disable))
334
277
self.enabled = True
335
# Also start a new checker *right now*.
336
self.start_checker()
337
278
338
def disable(self, quiet=True):
279
def disable(self):
339
280
"""Disable this client."""
340
281
if not getattr(self, "enabled", False):
341
282
return False
342
if not quiet:
343
logger.info(u"Disabling client %s", self.name)
344
if getattr(self, u"disable_initiator_tag", False):
283
logger.info(u"Disabling client %s", self.name)
284
if getattr(self, "disable_initiator_tag", False):
345
285
gobject.source_remove(self.disable_initiator_tag)
346
286
self.disable_initiator_tag = None
347
if getattr(self, u"checker_initiator_tag", False):
287
if getattr(self, "checker_initiator_tag", False):
348
288
gobject.source_remove(self.checker_initiator_tag)
349
289
self.checker_initiator_tag = None
350
290
self.stop_checker()
377
317
378
318
def checked_ok(self):
379
319
"""Bump up the timeout for this client.
380
381
320
This should only be called when the client has been seen,
382
321
alive and well.
383
322
"""
389
328
390
329
def start_checker(self):
391
330
"""Start a new checker subprocess if one is not running.
392
393
331
If a checker already exists, leave it running and do
394
332
nothing."""
395
333
# The reason for not killing a running checker is that if we
398
336
# client would inevitably timeout, since no checker would get
399
337
# a chance to run to completion. If we instead leave running
400
338
# checkers alone, the checker would have to take more time
401
# than 'timeout' for the client to be disabled, which is as it
402
# should be.
339
# than 'timeout' for the client to be declared invalid, which
340
# is as it should be.
403
341
404
342
# If a checker exists, make sure it is not a zombie
405
try:
343
if self.checker is not None:
406
344
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
407
except (AttributeError, OSError), error:
408
if (isinstance(error, OSError)
409
and error.errno != errno.ECHILD):
410
raise error
411
else:
412
345
if pid:
413
logger.warning(u"Checker was a zombie")
346
logger.warning("Checker was a zombie")
414
347
gobject.source_remove(self.checker_callback_tag)
415
348
self.checker_callback(pid, status,
416
349
self.current_checker_command)
421
354
command = self.checker_command % self.host
422
355
except TypeError:
423
356
# Escape attributes for the shell
424
escaped_attrs = dict((key,
425
re.escape(unicode(str(val),
426
errors=
427
u'replace')))
357
escaped_attrs = dict((key, re.escape(str(val)))
428
358
for key, val in
429
359
vars(self).iteritems())
430
360
try:
443
373
# always replaced by /dev/null.)
444
374
self.checker = subprocess.Popen(command,
445
375
close_fds=True,
446
shell=True, cwd=u"/")
376
shell=True, cwd="/")
447
377
self.checker_callback_tag = (gobject.child_watch_add
448
378
(self.checker.pid,
449
379
self.checker_callback,
465
395
if self.checker_callback_tag:
466
396
gobject.source_remove(self.checker_callback_tag)
467
397
self.checker_callback_tag = None
468
if getattr(self, u"checker", None) is None:
398
if getattr(self, "checker", None) is None:
469
399
return
470
400
logger.debug(u"Stopping checker for %(name)s", vars(self))
471
401
try:
472
402
os.kill(self.checker.pid, signal.SIGTERM)
473
#time.sleep(0.5)
403
#os.sleep(0.5)
474
404
#if self.checker.poll() is None:
475
405
# os.kill(self.checker.pid, signal.SIGKILL)
476
406
except OSError, error:
477
407
if error.errno != errno.ESRCH: # No such process
478
408
raise
479
409
self.checker = None
480
481
482
def dbus_service_property(dbus_interface, signature=u"v",
483
access=u"readwrite", byte_arrays=False):
484
"""Decorators for marking methods of a DBusObjectWithProperties to
485
become properties on the D-Bus.
486
487
The decorated method will be called with no arguments by "Get"
488
and with one argument by "Set".
489
490
The parameters, where they are supported, are the same as
491
dbus.service.method, except there is only "signature", since the
492
type from Get() and the type sent to Set() is the same.
493
"""
494
# Encoding deeply encoded byte arrays is not supported yet by the
495
# "Set" method, so we fail early here:
496
if byte_arrays and signature != u"ay":
497
raise ValueError(u"Byte arrays not supported for non-'ay'"
498
u" signature %r" % signature)
499
def decorator(func):
500
func._dbus_is_property = True
501
func._dbus_interface = dbus_interface
502
func._dbus_signature = signature
503
func._dbus_access = access
504
func._dbus_name = func.__name__
505
if func._dbus_name.endswith(u"_dbus_property"):
506
func._dbus_name = func._dbus_name[:-14]
507
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
508
return func
509
return decorator
510
511
512
class DBusPropertyException(dbus.exceptions.DBusException):
513
"""A base class for D-Bus property-related exceptions
514
"""
515
def __unicode__(self):
516
return unicode(str(self))
517
518
519
class DBusPropertyAccessException(DBusPropertyException):
520
"""A property's access permissions disallows an operation.
521
"""
522
pass
523
524
525
class DBusPropertyNotFound(DBusPropertyException):
526
"""An attempt was made to access a non-existing property.
527
"""
528
pass
529
530
531
class DBusObjectWithProperties(dbus.service.Object):
532
"""A D-Bus object with properties.
533
534
Classes inheriting from this can use the dbus_service_property
535
decorator to expose methods as D-Bus properties. It exposes the
536
standard Get(), Set(), and GetAll() methods on the D-Bus.
537
"""
538
539
@staticmethod
540
def _is_dbus_property(obj):
541
return getattr(obj, u"_dbus_is_property", False)
542
543
def _get_all_dbus_properties(self):
544
"""Returns a generator of (name, attribute) pairs
545
"""
546
return ((prop._dbus_name, prop)
547
for name, prop in
548
inspect.getmembers(self, self._is_dbus_property))
549
550
def _get_dbus_property(self, interface_name, property_name):
551
"""Returns a bound method if one exists which is a D-Bus
552
property with the specified name and interface.
553
"""
554
for name in (property_name,
555
property_name + u"_dbus_property"):
556
prop = getattr(self, name, None)
557
if (prop is None
558
or not self._is_dbus_property(prop)
559
or prop._dbus_name != property_name
560
or (interface_name and prop._dbus_interface
561
and interface_name != prop._dbus_interface)):
562
continue
563
return prop
564
# No such property
565
raise DBusPropertyNotFound(self.dbus_object_path + u":"
566
+ interface_name + u"."
567
+ property_name)
568
569
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
570
out_signature=u"v")
571
def Get(self, interface_name, property_name):
572
"""Standard D-Bus property Get() method, see D-Bus standard.
573
"""
574
prop = self._get_dbus_property(interface_name, property_name)
575
if prop._dbus_access == u"write":
576
raise DBusPropertyAccessException(property_name)
577
value = prop()
578
if not hasattr(value, u"variant_level"):
579
return value
580
return type(value)(value, variant_level=value.variant_level+1)
581
582
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
583
def Set(self, interface_name, property_name, value):
584
"""Standard D-Bus property Set() method, see D-Bus standard.
585
"""
586
prop = self._get_dbus_property(interface_name, property_name)
587
if prop._dbus_access == u"read":
588
raise DBusPropertyAccessException(property_name)
589
if prop._dbus_get_args_options[u"byte_arrays"]:
590
# The byte_arrays option is not supported yet on
591
# signatures other than "ay".
592
if prop._dbus_signature != u"ay":
593
raise ValueError
594
value = dbus.ByteArray(''.join(unichr(byte)
595
for byte in value))
596
prop(value)
597
598
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
599
out_signature=u"a{sv}")
600
def GetAll(self, interface_name):
601
"""Standard D-Bus property GetAll() method, see D-Bus
602
standard.
603
604
Note: Will not include properties with access="write".
605
"""
606
all = {}
607
for name, prop in self._get_all_dbus_properties():
608
if (interface_name
609
and interface_name != prop._dbus_interface):
610
# Interface non-empty but did not match
611
continue
612
# Ignore write-only properties
613
if prop._dbus_access == u"write":
614
continue
615
value = prop()
616
if not hasattr(value, u"variant_level"):
617
all[name] = value
618
continue
619
all[name] = type(value)(value, variant_level=
620
value.variant_level+1)
621
return dbus.Dictionary(all, signature=u"sv")
622
623
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
624
out_signature=u"s",
625
path_keyword='object_path',
626
connection_keyword='connection')
627
def Introspect(self, object_path, connection):
628
"""Standard D-Bus method, overloaded to insert property tags.
629
"""
630
xmlstring = dbus.service.Object.Introspect(self, object_path,
631
connection)
632
try:
633
document = xml.dom.minidom.parseString(xmlstring)
634
def make_tag(document, name, prop):
635
e = document.createElement(u"property")
636
e.setAttribute(u"name", name)
637
e.setAttribute(u"type", prop._dbus_signature)
638
e.setAttribute(u"access", prop._dbus_access)
639
return e
640
for if_tag in document.getElementsByTagName(u"interface"):
641
for tag in (make_tag(document, name, prop)
642
for name, prop
643
in self._get_all_dbus_properties()
644
if prop._dbus_interface
645
== if_tag.getAttribute(u"name")):
646
if_tag.appendChild(tag)
647
# Add the names to the return values for the
648
# "org.freedesktop.DBus.Properties" methods
649
if (if_tag.getAttribute(u"name")
650
== u"org.freedesktop.DBus.Properties"):
651
for cn in if_tag.getElementsByTagName(u"method"):
652
if cn.getAttribute(u"name") == u"Get":
653
for arg in cn.getElementsByTagName(u"arg"):
654
if (arg.getAttribute(u"direction")
655
== u"out"):
656
arg.setAttribute(u"name", u"value")
657
elif cn.getAttribute(u"name") == u"GetAll":
658
for arg in cn.getElementsByTagName(u"arg"):
659
if (arg.getAttribute(u"direction")
660
== u"out"):
661
arg.setAttribute(u"name", u"props")
662
xmlstring = document.toxml(u"utf-8")
663
document.unlink()
664
except (AttributeError, xml.dom.DOMException,
665
xml.parsers.expat.ExpatError), error:
666
logger.error(u"Failed to override Introspection method",
667
error)
668
return xmlstring
669
670
671
class ClientDBus(Client, DBusObjectWithProperties):
410
411
def still_valid(self):
412
"""Has the timeout not yet passed for this client?"""
413
if not getattr(self, "enabled", False):
414
return False
415
now = datetime.datetime.utcnow()
416
if self.last_checked_ok is None:
417
return now < (self.created + self.timeout)
418
else:
419
return now < (self.last_checked_ok + self.timeout)
420
421
422
class ClientDBus(Client, dbus.service.Object):
672
423
"""A Client class using D-Bus
673
674
424
Attributes:
675
dbus_object_path: dbus.ObjectPath
676
bus: dbus.SystemBus()
425
dbus_object_path: dbus.ObjectPath ; only set if self.use_dbus
677
426
"""
678
427
# dbus.service.Object doesn't use super(), so we can't either.
679
428
680
def __init__(self, bus = None, *args, **kwargs):
681
self.bus = bus
429
def __init__(self, *args, **kwargs):
682
430
Client.__init__(self, *args, **kwargs)
683
431
# Only now, when this client is initialized, can it show up on
684
432
# the D-Bus
685
433
self.dbus_object_path = (dbus.ObjectPath
686
(u"/clients/"
687
+ self.name.replace(u".", u"_")))
688
DBusObjectWithProperties.__init__(self, self.bus,
689
self.dbus_object_path)
690
691
@staticmethod
692
def _datetime_to_dbus(dt, variant_level=0):
693
"""Convert a UTC datetime.datetime() to a D-Bus type."""
694
return dbus.String(dt.isoformat(),
695
variant_level=variant_level)
696
434
("/clients/"
435
+ self.name.replace(".", "_")))
436
dbus.service.Object.__init__(self, bus,
437
self.dbus_object_path)
697
438
def enable(self):
698
oldstate = getattr(self, u"enabled", False)
439
oldstate = getattr(self, "enabled", False)
699
440
r = Client.enable(self)
700
441
if oldstate != self.enabled:
701
442
# Emit D-Bus signals
702
443
self.PropertyChanged(dbus.String(u"enabled"),
703
444
dbus.Boolean(True, variant_level=1))
704
self.PropertyChanged(
705
dbus.String(u"last_enabled"),
706
self._datetime_to_dbus(self.last_enabled,
707
variant_level=1))
445
self.PropertyChanged(dbus.String(u"last_enabled"),
446
(_datetime_to_dbus(self.last_enabled,
447
variant_level=1)))
708
448
return r
709
449
710
def disable(self, quiet = False):
711
oldstate = getattr(self, u"enabled", False)
712
r = Client.disable(self, quiet=quiet)
713
if not quiet and oldstate != self.enabled:
450
def disable(self, signal = True):
451
oldstate = getattr(self, "enabled", False)
452
r = Client.disable(self)
453
if signal and oldstate != self.enabled:
714
454
# Emit D-Bus signal
715
455
self.PropertyChanged(dbus.String(u"enabled"),
716
456
dbus.Boolean(False, variant_level=1))
721
461
self.remove_from_connection()
722
462
except LookupError:
723
463
pass
724
if hasattr(DBusObjectWithProperties, u"__del__"):
725
DBusObjectWithProperties.__del__(self, *args, **kwargs)
464
if hasattr(dbus.service.Object, "__del__"):
465
dbus.service.Object.__del__(self, *args, **kwargs)
726
466
Client.__del__(self, *args, **kwargs)
727
467
728
468
def checker_callback(self, pid, condition, command,
752
492
# Emit D-Bus signal
753
493
self.PropertyChanged(
754
494
dbus.String(u"last_checked_ok"),
755
(self._datetime_to_dbus(self.last_checked_ok,
756
variant_level=1)))
495
(_datetime_to_dbus(self.last_checked_ok,
496
variant_level=1)))
757
497
return r
758
498
759
499
def start_checker(self, *args, **kwargs):
769
509
# Emit D-Bus signal
770
510
self.CheckerStarted(self.current_checker_command)
771
511
self.PropertyChanged(
772
dbus.String(u"checker_running"),
512
dbus.String("checker_running"),
773
513
dbus.Boolean(True, variant_level=1))
774
514
return r
775
515
776
516
def stop_checker(self, *args, **kwargs):
777
old_checker = getattr(self, u"checker", None)
517
old_checker = getattr(self, "checker", None)
778
518
r = Client.stop_checker(self, *args, **kwargs)
779
519
if (old_checker is not None
780
and getattr(self, u"checker", None) is None):
520
and getattr(self, "checker", None) is None):
781
521
self.PropertyChanged(dbus.String(u"checker_running"),
782
522
dbus.Boolean(False, variant_level=1))
783
523
return r
784
524
785
## D-Bus methods, signals & properties
525
## D-Bus methods & signals
786
526
_interface = u"se.bsnet.fukt.Mandos.Client"
787
527
788
## Signals
528
# CheckedOK - method
529
CheckedOK = dbus.service.method(_interface)(checked_ok)
530
CheckedOK.__name__ = "CheckedOK"
789
531
790
532
# CheckerCompleted - signal
791
@dbus.service.signal(_interface, signature=u"nxs")
533
@dbus.service.signal(_interface, signature="nxs")
792
534
def CheckerCompleted(self, exitcode, waitstatus, command):
793
535
"D-Bus signal"
794
536
pass
795
537
796
538
# CheckerStarted - signal
797
@dbus.service.signal(_interface, signature=u"s")
539
@dbus.service.signal(_interface, signature="s")
798
540
def CheckerStarted(self, command):
799
541
"D-Bus signal"
800
542
pass
801
543
544
# GetAllProperties - method
545
@dbus.service.method(_interface, out_signature="a{sv}")
546
def GetAllProperties(self):
547
"D-Bus method"
548
return dbus.Dictionary({
549
dbus.String("name"):
550
dbus.String(self.name, variant_level=1),
551
dbus.String("fingerprint"):
552
dbus.String(self.fingerprint, variant_level=1),
553
dbus.String("host"):
554
dbus.String(self.host, variant_level=1),
555
dbus.String("created"):
556
_datetime_to_dbus(self.created, variant_level=1),
557
dbus.String("last_enabled"):
558
(_datetime_to_dbus(self.last_enabled,
559
variant_level=1)
560
if self.last_enabled is not None
561
else dbus.Boolean(False, variant_level=1)),
562
dbus.String("enabled"):
563
dbus.Boolean(self.enabled, variant_level=1),
564
dbus.String("last_checked_ok"):
565
(_datetime_to_dbus(self.last_checked_ok,
566
variant_level=1)
567
if self.last_checked_ok is not None
568
else dbus.Boolean (False, variant_level=1)),
569
dbus.String("timeout"):
570
dbus.UInt64(self.timeout_milliseconds(),
571
variant_level=1),
572
dbus.String("interval"):
573
dbus.UInt64(self.interval_milliseconds(),
574
variant_level=1),
575
dbus.String("checker"):
576
dbus.String(self.checker_command,
577
variant_level=1),
578
dbus.String("checker_running"):
579
dbus.Boolean(self.checker is not None,
580
variant_level=1),
581
dbus.String("object_path"):
582
dbus.ObjectPath(self.dbus_object_path,
583
variant_level=1)
584
}, signature="sv")
585
586
# IsStillValid - method
587
@dbus.service.method(_interface, out_signature="b")
588
def IsStillValid(self):
589
return self.still_valid()
590
802
591
# PropertyChanged - signal
803
@dbus.service.signal(_interface, signature=u"sv")
592
@dbus.service.signal(_interface, signature="sv")
804
593
def PropertyChanged(self, property, value):
805
594
"D-Bus signal"
806
595
pass
807
596
808
# GotSecret - signal
597
# ReceivedSecret - signal
809
598
@dbus.service.signal(_interface)
810
def GotSecret(self):
599
def ReceivedSecret(self):
811
600
"D-Bus signal"
812
601
pass
813
602
817
606
"D-Bus signal"
818
607
pass
819
608
820
## Methods
821
822
# CheckedOK - method
823
@dbus.service.method(_interface)
824
def CheckedOK(self):
825
return self.checked_ok()
609
# SetChecker - method
610
@dbus.service.method(_interface, in_signature="s")
611
def SetChecker(self, checker):
612
"D-Bus setter method"
613
self.checker_command = checker
614
# Emit D-Bus signal
615
self.PropertyChanged(dbus.String(u"checker"),
616
dbus.String(self.checker_command,
617
variant_level=1))
618
619
# SetHost - method
620
@dbus.service.method(_interface, in_signature="s")
621
def SetHost(self, host):
622
"D-Bus setter method"
623
self.host = host
624
# Emit D-Bus signal
625
self.PropertyChanged(dbus.String(u"host"),
626
dbus.String(self.host, variant_level=1))
627
628
# SetInterval - method
629
@dbus.service.method(_interface, in_signature="t")
630
def SetInterval(self, milliseconds):
631
self.interval = datetime.timedelta(0, 0, 0, milliseconds)
632
# Emit D-Bus signal
633
self.PropertyChanged(dbus.String(u"interval"),
634
(dbus.UInt64(self.interval_milliseconds(),
635
variant_level=1)))
636
637
# SetSecret - method
638
@dbus.service.method(_interface, in_signature="ay",
639
byte_arrays=True)
640
def SetSecret(self, secret):
641
"D-Bus setter method"
642
self.secret = str(secret)
643
644
# SetTimeout - method
645
@dbus.service.method(_interface, in_signature="t")
646
def SetTimeout(self, milliseconds):
647
self.timeout = datetime.timedelta(0, 0, 0, milliseconds)
648
# Emit D-Bus signal
649
self.PropertyChanged(dbus.String(u"timeout"),
650
(dbus.UInt64(self.timeout_milliseconds(),
651
variant_level=1)))
826
652
827
653
# Enable - method
828
@dbus.service.method(_interface)
829
def Enable(self):
830
"D-Bus method"
831
self.enable()
654
Enable = dbus.service.method(_interface)(enable)
655
Enable.__name__ = "Enable"
832
656
833
657
# StartChecker - method
834
658
@dbus.service.method(_interface)
843
667
self.disable()
844
668
845
669
# StopChecker - method
846
@dbus.service.method(_interface)
847
def StopChecker(self):
848
self.stop_checker()
849
850
## Properties
851
852
# name - property
853
@dbus_service_property(_interface, signature=u"s", access=u"read")
854
def name_dbus_property(self):
855
return dbus.String(self.name)
856
857
# fingerprint - property
858
@dbus_service_property(_interface, signature=u"s", access=u"read")
859
def fingerprint_dbus_property(self):
860
return dbus.String(self.fingerprint)
861
862
# host - property
863
@dbus_service_property(_interface, signature=u"s",
864
access=u"readwrite")
865
def host_dbus_property(self, value=None):
866
if value is None: # get
867
return dbus.String(self.host)
868
self.host = value
869
# Emit D-Bus signal
870
self.PropertyChanged(dbus.String(u"host"),
871
dbus.String(value, variant_level=1))
872
873
# created - property
874
@dbus_service_property(_interface, signature=u"s", access=u"read")
875
def created_dbus_property(self):
876
return dbus.String(self._datetime_to_dbus(self.created))
877
878
# last_enabled - property
879
@dbus_service_property(_interface, signature=u"s", access=u"read")
880
def last_enabled_dbus_property(self):
881
if self.last_enabled is None:
882
return dbus.String(u"")
883
return dbus.String(self._datetime_to_dbus(self.last_enabled))
884
885
# enabled - property
886
@dbus_service_property(_interface, signature=u"b",
887
access=u"readwrite")
888
def enabled_dbus_property(self, value=None):
889
if value is None: # get
890
return dbus.Boolean(self.enabled)
891
if value:
892
self.enable()
893
else:
894
self.disable()
895
896
# last_checked_ok - property
897
@dbus_service_property(_interface, signature=u"s",
898
access=u"readwrite")
899
def last_checked_ok_dbus_property(self, value=None):
900
if value is not None:
901
self.checked_ok()
902
return
903
if self.last_checked_ok is None:
904
return dbus.String(u"")
905
return dbus.String(self._datetime_to_dbus(self
906
.last_checked_ok))
907
908
# timeout - property
909
@dbus_service_property(_interface, signature=u"t",
910
access=u"readwrite")
911
def timeout_dbus_property(self, value=None):
912
if value is None: # get
913
return dbus.UInt64(self.timeout_milliseconds())
914
self.timeout = datetime.timedelta(0, 0, 0, value)
915
# Emit D-Bus signal
916
self.PropertyChanged(dbus.String(u"timeout"),
917
dbus.UInt64(value, variant_level=1))
918
if getattr(self, u"disable_initiator_tag", None) is None:
919
return
920
# Reschedule timeout
921
gobject.source_remove(self.disable_initiator_tag)
922
self.disable_initiator_tag = None
923
time_to_die = (self.
924
_timedelta_to_milliseconds((self
925
.last_checked_ok
926
+ self.timeout)
927
- datetime.datetime
928
.utcnow()))
929
if time_to_die <= 0:
930
# The timeout has passed
931
self.disable()
932
else:
933
self.disable_initiator_tag = (gobject.timeout_add
934
(time_to_die, self.disable))
935
936
# interval - property
937
@dbus_service_property(_interface, signature=u"t",
938
access=u"readwrite")
939
def interval_dbus_property(self, value=None):
940
if value is None: # get
941
return dbus.UInt64(self.interval_milliseconds())
942
self.interval = datetime.timedelta(0, 0, 0, value)
943
# Emit D-Bus signal
944
self.PropertyChanged(dbus.String(u"interval"),
945
dbus.UInt64(value, variant_level=1))
946
if getattr(self, u"checker_initiator_tag", None) is None:
947
return
948
# Reschedule checker run
949
gobject.source_remove(self.checker_initiator_tag)
950
self.checker_initiator_tag = (gobject.timeout_add
951
(value, self.start_checker))
952
self.start_checker() # Start one now, too
953
954
# checker - property
955
@dbus_service_property(_interface, signature=u"s",
956
access=u"readwrite")
957
def checker_dbus_property(self, value=None):
958
if value is None: # get
959
return dbus.String(self.checker_command)
960
self.checker_command = value
961
# Emit D-Bus signal
962
self.PropertyChanged(dbus.String(u"checker"),
963
dbus.String(self.checker_command,
964
variant_level=1))
965
966
# checker_running - property
967
@dbus_service_property(_interface, signature=u"b",
968
access=u"readwrite")
969
def checker_running_dbus_property(self, value=None):
970
if value is None: # get
971
return dbus.Boolean(self.checker is not None)
972
if value:
973
self.start_checker()
974
else:
975
self.stop_checker()
976
977
# object_path - property
978
@dbus_service_property(_interface, signature=u"o", access=u"read")
979
def object_path_dbus_property(self):
980
return self.dbus_object_path # is already a dbus.ObjectPath
981
982
# secret = property
983
@dbus_service_property(_interface, signature=u"ay",
984
access=u"write", byte_arrays=True)
985
def secret_dbus_property(self, value):
986
self.secret = str(value)
670
StopChecker = dbus.service.method(_interface)(stop_checker)
671
StopChecker.__name__ = "StopChecker"
987
672
988
673
del _interface
989
674
990
675
991
class ClientHandler(socketserver.BaseRequestHandler, object):
992
"""A class to handle client connections.
993
994
Instantiated once for each connection to handle it.
676
def peer_certificate(session):
677
"Return the peer's OpenPGP certificate as a bytestring"
678
# If not an OpenPGP certificate...
679
if (gnutls.library.functions
680
.gnutls_certificate_type_get(session._c_object)
681
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
682
# ...do the normal thing
683
return session.peer_certificate
684
list_size = ctypes.c_uint(1)
685
cert_list = (gnutls.library.functions
686
.gnutls_certificate_get_peers
687
(session._c_object, ctypes.byref(list_size)))
688
if not bool(cert_list) and list_size.value != 0:
689
raise gnutls.errors.GNUTLSError("error getting peer"
690
" certificate")
691
if list_size.value == 0:
692
return None
693
cert = cert_list[0]
694
return ctypes.string_at(cert.data, cert.size)
695
696
697
def fingerprint(openpgp):
698
"Convert an OpenPGP bytestring to a hexdigit fingerprint string"
699
# New GnuTLS "datum" with the OpenPGP public key
700
datum = (gnutls.library.types
701
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
702
ctypes.POINTER
703
(ctypes.c_ubyte)),
704
ctypes.c_uint(len(openpgp))))
705
# New empty GnuTLS certificate
706
crt = gnutls.library.types.gnutls_openpgp_crt_t()
707
(gnutls.library.functions
708
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
709
# Import the OpenPGP public key into the certificate
710
(gnutls.library.functions
711
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
712
gnutls.library.constants
713
.GNUTLS_OPENPGP_FMT_RAW))
714
# Verify the self signature in the key
715
crtverify = ctypes.c_uint()
716
(gnutls.library.functions
717
.gnutls_openpgp_crt_verify_self(crt, 0, ctypes.byref(crtverify)))
718
if crtverify.value != 0:
719
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
720
raise gnutls.errors.CertificateSecurityError("Verify failed")
721
# New buffer for the fingerprint
722
buf = ctypes.create_string_buffer(20)
723
buf_len = ctypes.c_size_t()
724
# Get the fingerprint from the certificate into the buffer
725
(gnutls.library.functions
726
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
727
ctypes.byref(buf_len)))
728
# Deinit the certificate
729
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
730
# Convert the buffer to a Python bytestring
731
fpr = ctypes.string_at(buf, buf_len.value)
732
# Convert the bytestring to hexadecimal notation
733
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
734
return hex_fpr
735
736
737
class TCP_handler(SocketServer.BaseRequestHandler, object):
738
"""A TCP request handler class.
739
Instantiated by IPv6_TCPServer for each request to handle it.
995
740
Note: This will run in its own forked process."""
996
741
997
742
def handle(self):
998
743
logger.info(u"TCP connection from: %s",
999
744
unicode(self.client_address))
1000
logger.debug(u"IPC Pipe FD: %d",
1001
self.server.child_pipe[1].fileno())
745
logger.debug(u"IPC Pipe FD: %d", self.server.pipe[1])
1002
746
# Open IPC pipe to parent process
1003
with contextlib.nested(self.server.child_pipe[1],
1004
self.server.parent_pipe[0]
1005
) as (ipc, ipc_return):
747
with closing(os.fdopen(self.server.pipe[1], "w", 1)) as ipc:
1006
748
session = (gnutls.connection
1007
749
.ClientSession(self.request,
1008
750
gnutls.connection
1009
751
.X509Credentials()))
1010
752
753
line = self.request.makefile().readline()
754
logger.debug(u"Protocol version: %r", line)
755
try:
756
if int(line.strip().split()[0]) > 1:
757
raise RuntimeError
758
except (ValueError, IndexError, RuntimeError), error:
759
logger.error(u"Unknown protocol version: %s", error)
760
return
761
1011
762
# Note: gnutls.connection.X509Credentials is really a
1012
763
# generic GnuTLS certificate credentials object so long as
1013
764
# no X.509 keys are added to it. Therefore, we can use it
1014
765
# here despite using OpenPGP certificates.
1015
766
1016
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1017
# u"+AES-256-CBC", u"+SHA1",
1018
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1019
# u"+DHE-DSS"))
767
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
768
# "+AES-256-CBC", "+SHA1",
769
# "+COMP-NULL", "+CTYPE-OPENPGP",
770
# "+DHE-DSS"))
1020
771
# Use a fallback default, since this MUST be set.
1021
priority = self.server.gnutls_priority
1022
if priority is None:
1023
priority = u"NORMAL"
772
priority = self.server.settings.get("priority", "NORMAL")
1024
773
(gnutls.library.functions
1025
774
.gnutls_priority_set_direct(session._c_object,
1026
775
priority, None))
1027
776
1028
# Start communication using the Mandos protocol
1029
# Get protocol number
1030
line = self.request.makefile().readline()
1031
logger.debug(u"Protocol version: %r", line)
1032
try:
1033
if int(line.strip().split()[0]) > 1:
1034
raise RuntimeError
1035
except (ValueError, IndexError, RuntimeError), error:
1036
logger.error(u"Unknown protocol version: %s", error)
1037
return
1038
1039
# Start GnuTLS connection
1040
777
try:
1041
778
session.handshake()
1042
779
except gnutls.errors.GNUTLSError, error:
1046
783
return
1047
784
logger.debug(u"Handshake succeeded")
1048
785
try:
1049
try:
1050
fpr = self.fingerprint(self.peer_certificate
1051
(session))
1052
except (TypeError, gnutls.errors.GNUTLSError), error:
1053
logger.warning(u"Bad certificate: %s", error)
1054
return
1055
logger.debug(u"Fingerprint: %s", fpr)
1056
1057
for c in self.server.clients:
1058
if c.fingerprint == fpr:
1059
client = c
1060
break
1061
else:
1062
ipc.write(u"NOTFOUND %s %s\n"
1063
% (fpr, unicode(self.client_address)))
1064
return
1065
1066
class ClientProxy(object):
1067
"""Client proxy object. Not for calling methods."""
1068
def __init__(self, client):
1069
self.client = client
1070
def __getattr__(self, name):
1071
if name.startswith("ipc_"):
1072
def tempfunc():
1073
ipc.write("%s %s\n" % (name[4:].upper(),
1074
self.client.name))
1075
return tempfunc
1076
if not hasattr(self.client, name):
1077
raise AttributeError
1078
ipc.write(u"GETATTR %s %s\n"
1079
% (name, self.client.fingerprint))
1080
return pickle.load(ipc_return)
1081
clientproxy = ClientProxy(client)
1082
# Have to check if client.enabled, since it is
1083
# possible that the client was disabled since the
1084
# GnuTLS session was established.
1085
if not clientproxy.enabled:
1086
clientproxy.ipc_disabled()
1087
return
1088
1089
clientproxy.ipc_sending()
1090
sent_size = 0
1091
while sent_size < len(client.secret):
1092
sent = session.send(client.secret[sent_size:])
1093
logger.debug(u"Sent: %d, remaining: %d",
1094
sent, len(client.secret)
1095
- (sent_size + sent))
1096
sent_size += sent
1097
finally:
1098
session.bye()
1099
1100
@staticmethod
1101
def peer_certificate(session):
1102
"Return the peer's OpenPGP certificate as a bytestring"
1103
# If not an OpenPGP certificate...
1104
if (gnutls.library.functions
1105
.gnutls_certificate_type_get(session._c_object)
1106
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1107
# ...do the normal thing
1108
return session.peer_certificate
1109
list_size = ctypes.c_uint(1)
1110
cert_list = (gnutls.library.functions
1111
.gnutls_certificate_get_peers
1112
(session._c_object, ctypes.byref(list_size)))
1113
if not bool(cert_list) and list_size.value != 0:
1114
raise gnutls.errors.GNUTLSError(u"error getting peer"
1115
u" certificate")
1116
if list_size.value == 0:
1117
return None
1118
cert = cert_list[0]
1119
return ctypes.string_at(cert.data, cert.size)
1120
1121
@staticmethod
1122
def fingerprint(openpgp):
1123
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1124
# New GnuTLS "datum" with the OpenPGP public key
1125
datum = (gnutls.library.types
1126
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1127
ctypes.POINTER
1128
(ctypes.c_ubyte)),
1129
ctypes.c_uint(len(openpgp))))
1130
# New empty GnuTLS certificate
1131
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1132
(gnutls.library.functions
1133
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
1134
# Import the OpenPGP public key into the certificate
1135
(gnutls.library.functions
1136
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1137
gnutls.library.constants
1138
.GNUTLS_OPENPGP_FMT_RAW))
1139
# Verify the self signature in the key
1140
crtverify = ctypes.c_uint()
1141
(gnutls.library.functions
1142
.gnutls_openpgp_crt_verify_self(crt, 0,
1143
ctypes.byref(crtverify)))
1144
if crtverify.value != 0:
1145
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1146
raise (gnutls.errors.CertificateSecurityError
1147
(u"Verify failed"))
1148
# New buffer for the fingerprint
1149
buf = ctypes.create_string_buffer(20)
1150
buf_len = ctypes.c_size_t()
1151
# Get the fingerprint from the certificate into the buffer
1152
(gnutls.library.functions
1153
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1154
ctypes.byref(buf_len)))
1155
# Deinit the certificate
1156
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1157
# Convert the buffer to a Python bytestring
1158
fpr = ctypes.string_at(buf, buf_len.value)
1159
# Convert the bytestring to hexadecimal notation
1160
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1161
return hex_fpr
1162
1163
1164
class ForkingMixInWithPipes(socketserver.ForkingMixIn, object):
1165
"""Like socketserver.ForkingMixIn, but also pass a pipe pair."""
786
fpr = fingerprint(peer_certificate(session))
787
except (TypeError, gnutls.errors.GNUTLSError), error:
788
logger.warning(u"Bad certificate: %s", error)
789
session.bye()
790
return
791
logger.debug(u"Fingerprint: %s", fpr)
792
793
for c in self.server.clients:
794
if c.fingerprint == fpr:
795
client = c
796
break
797
else:
798
logger.warning(u"Client not found for fingerprint: %s",
799
fpr)
800
ipc.write("NOTFOUND %s\n" % fpr)
801
session.bye()
802
return
803
# Have to check if client.still_valid(), since it is
804
# possible that the client timed out while establishing
805
# the GnuTLS session.
806
if not client.still_valid():
807
logger.warning(u"Client %(name)s is invalid",
808
vars(client))
809
ipc.write("INVALID %s\n" % client.name)
810
session.bye()
811
return
812
ipc.write("SENDING %s\n" % client.name)
813
sent_size = 0
814
while sent_size < len(client.secret):
815
sent = session.send(client.secret[sent_size:])
816
logger.debug(u"Sent: %d, remaining: %d",
817
sent, len(client.secret)
818
- (sent_size + sent))
819
sent_size += sent
820
session.bye()
821
822
823
class ForkingMixInWithPipe(SocketServer.ForkingMixIn, object):
824
"""Like SocketServer.ForkingMixIn, but also pass a pipe.
825
Assumes a gobject.MainLoop event loop.
826
"""
1166
827
def process_request(self, request, client_address):
1167
"""Overrides and wraps the original process_request().
1168
1169
This function creates a new pipe in self.pipe
828
"""This overrides and wraps the original process_request().
829
This function creates a new pipe in self.pipe
1170
830
"""
1171
# Child writes to child_pipe
1172
self.child_pipe = map(os.fdopen, os.pipe(), u"rw", (1, 0))
1173
# Parent writes to parent_pipe
1174
self.parent_pipe = map(os.fdopen, os.pipe(), u"rw", (1, 0))
1175
super(ForkingMixInWithPipes,
831
self.pipe = os.pipe()
832
super(ForkingMixInWithPipe,
1176
833
self).process_request(request, client_address)
1177
# Close unused ends for parent
1178
self.parent_pipe[0].close() # close read end
1179
self.child_pipe[1].close() # close write end
1180
self.add_pipe_fds(self.child_pipe[0], self.parent_pipe[1])
1181
def add_pipe_fds(self, child_pipe_fd, parent_pipe_fd):
834
os.close(self.pipe[1]) # close write end
835
# Call "handle_ipc" for both data and EOF events
836
gobject.io_add_watch(self.pipe[0],
837
gobject.IO_IN | gobject.IO_HUP,
838
self.handle_ipc)
839
def handle_ipc(source, condition):
1182
840
"""Dummy function; override as necessary"""
1183
child_pipe_fd.close()
1184
parent_pipe_fd.close()
1185
1186
1187
class IPv6_TCPServer(ForkingMixInWithPipes,
1188
socketserver.TCPServer, object):
841
os.close(source)
842
return False
843
844
845
class IPv6_TCPServer(ForkingMixInWithPipe,
846
SocketServer.TCPServer, object):
1189
847
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1190
1191
848
Attributes:
849
settings: Server settings
850
clients: Set() of Client objects
1192
851
enabled: Boolean; whether this server is activated yet
1193
interface: None or a network interface name (string)
1194
use_ipv6: Boolean; to use IPv6 or not
1195
852
"""
1196
def __init__(self, server_address, RequestHandlerClass,
1197
interface=None, use_ipv6=True):
1198
self.interface = interface
1199
if use_ipv6:
1200
self.address_family = socket.AF_INET6
1201
socketserver.TCPServer.__init__(self, server_address,
1202
RequestHandlerClass)
853
address_family = socket.AF_INET6
854
def __init__(self, *args, **kwargs):
855
if "settings" in kwargs:
856
self.settings = kwargs["settings"]
857
del kwargs["settings"]
858
if "clients" in kwargs:
859
self.clients = kwargs["clients"]
860
del kwargs["clients"]
861
if "use_ipv6" in kwargs:
862
if not kwargs["use_ipv6"]:
863
self.address_family = socket.AF_INET
864
del kwargs["use_ipv6"]
865
self.enabled = False
866
super(IPv6_TCPServer, self).__init__(*args, **kwargs)
1203
867
def server_bind(self):
1204
868
"""This overrides the normal server_bind() function
1205
869
to bind to an interface if one was specified, and also NOT to
1206
870
bind to an address or port if they were not specified."""
1207
if self.interface is not None:
1208
if SO_BINDTODEVICE is None:
1209
logger.error(u"SO_BINDTODEVICE does not exist;"
1210
u" cannot bind to interface %s",
1211
self.interface)
1212
else:
1213
try:
1214
self.socket.setsockopt(socket.SOL_SOCKET,
1215
SO_BINDTODEVICE,
1216
str(self.interface
1217
+ u'\0'))
1218
except socket.error, error:
1219
if error[0] == errno.EPERM:
1220
logger.error(u"No permission to"
1221
u" bind to interface %s",
1222
self.interface)
1223
elif error[0] == errno.ENOPROTOOPT:
1224
logger.error(u"SO_BINDTODEVICE not available;"
1225
u" cannot bind to interface %s",
1226
self.interface)
1227
else:
1228
raise
871
if self.settings["interface"]:
872
# 25 is from /usr/include/asm-i486/socket.h
873
SO_BINDTODEVICE = getattr(socket, "SO_BINDTODEVICE", 25)
874
try:
875
self.socket.setsockopt(socket.SOL_SOCKET,
876
SO_BINDTODEVICE,
877
self.settings["interface"])
878
except socket.error, error:
879
if error[0] == errno.EPERM:
880
logger.error(u"No permission to"
881
u" bind to interface %s",
882
self.settings["interface"])
883
else:
884
raise
1229
885
# Only bind(2) the socket if we really need to.
1230
886
if self.server_address[0] or self.server_address[1]:
1231
887
if not self.server_address[0]:
1232
888
if self.address_family == socket.AF_INET6:
1233
any_address = u"::" # in6addr_any
889
any_address = "::" # in6addr_any
1234
890
else:
1235
891
any_address = socket.INADDR_ANY
1236
892
self.server_address = (any_address,
1238
894
elif not self.server_address[1]:
1239
895
self.server_address = (self.server_address[0],
1240
896
0)
1241
# if self.interface:
897
# if self.settings["interface"]:
1242
898
# self.server_address = (self.server_address[0],
1243
899
# 0, # port
1244
900
# 0, # flowinfo
1245
901
# if_nametoindex
1246
# (self.interface))
1247
return socketserver.TCPServer.server_bind(self)
1248
1249
1250
class MandosServer(IPv6_TCPServer):
1251
"""Mandos server.
1252
1253
Attributes:
1254
clients: set of Client objects
1255
gnutls_priority GnuTLS priority string
1256
use_dbus: Boolean; to emit D-Bus signals or not
1257
1258
Assumes a gobject.MainLoop event loop.
1259
"""
1260
def __init__(self, server_address, RequestHandlerClass,
1261
interface=None, use_ipv6=True, clients=None,
1262
gnutls_priority=None, use_dbus=True):
1263
self.enabled = False
1264
self.clients = clients
1265
if self.clients is None:
1266
self.clients = set()
1267
self.use_dbus = use_dbus
1268
self.gnutls_priority = gnutls_priority
1269
IPv6_TCPServer.__init__(self, server_address,
1270
RequestHandlerClass,
1271
interface = interface,
1272
use_ipv6 = use_ipv6)
902
# (self.settings
903
# ["interface"]))
904
return super(IPv6_TCPServer, self).server_bind()
1273
905
def server_activate(self):
1274
906
if self.enabled:
1275
return socketserver.TCPServer.server_activate(self)
907
return super(IPv6_TCPServer, self).server_activate()
1276
908
def enable(self):
1277
909
self.enabled = True
1278
def add_pipe_fds(self, child_pipe_fd, parent_pipe_fd):
1279
# Call "handle_ipc" for both data and EOF events
1280
gobject.io_add_watch(child_pipe_fd.fileno(),
1281
gobject.IO_IN | gobject.IO_HUP,
1282
functools.partial(self.handle_ipc,
1283
reply = parent_pipe_fd,
1284
sender= child_pipe_fd))
1285
def handle_ipc(self, source, condition, reply=None, sender=None):
910
def handle_ipc(self, source, condition, file_objects={}):
1286
911
condition_names = {
1287
gobject.IO_IN: u"IN", # There is data to read.
1288
gobject.IO_OUT: u"OUT", # Data can be written (without
1289
# blocking).
1290
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1291
gobject.IO_ERR: u"ERR", # Error condition.
1292
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1293
# broken, usually for pipes and
1294
# sockets).
912
gobject.IO_IN: "IN", # There is data to read.
913
gobject.IO_OUT: "OUT", # Data can be written (without
914
# blocking).
915
gobject.IO_PRI: "PRI", # There is urgent data to read.
916
gobject.IO_ERR: "ERR", # Error condition.
917
gobject.IO_HUP: "HUP" # Hung up (the connection has been
918
# broken, usually for pipes and
919
# sockets).
1295
920
}
1296
921
conditions_string = ' | '.join(name
1297
922
for cond, name in
1298
923
condition_names.iteritems()
1299
924
if cond & condition)
1300
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
925
logger.debug("Handling IPC: FD = %d, condition = %s", source,
1301
926
conditions_string)
1302
927
928
# Turn the pipe file descriptor into a Python file object
929
if source not in file_objects:
930
file_objects[source] = os.fdopen(source, "r", 1)
931
1303
932
# Read a line from the file object
1304
cmdline = sender.readline()
933
cmdline = file_objects[source].readline()
1305
934
if not cmdline: # Empty line means end of file
1306
# close the IPC pipes
1307
sender.close()
1308
reply.close()
935
# close the IPC pipe
936
file_objects[source].close()
937
del file_objects[source]
1309
938
1310
939
# Stop calling this function
1311
940
return False
1312
941
1313
logger.debug(u"IPC command: %r", cmdline)
942
logger.debug("IPC command: %r\n" % cmdline)
1314
943
1315
944
# Parse and act on command
1316
cmd, args = cmdline.rstrip(u"\r\n").split(None, 1)
1317
1318
if cmd == u"NOTFOUND":
1319
fpr, address = args.split(None, 1)
1320
logger.warning(u"Client not found for fingerprint: %s, ad"
1321
u"dress: %s", fpr, address)
1322
if self.use_dbus:
945
cmd, args = cmdline.split(None, 1)
946
if cmd == "NOTFOUND":
947
if self.settings["use_dbus"]:
1323
948
# Emit D-Bus signal
1324
mandos_dbus_service.ClientNotFound(fpr, address)
1325
elif cmd == u"DISABLED":
1326
for client in self.clients:
1327
if client.name == args:
1328
logger.warning(u"Client %s is disabled", args)
1329
if self.use_dbus:
949
mandos_dbus_service.ClientNotFound(args)
950
elif cmd == "INVALID":
951
if self.settings["use_dbus"]:
952
for client in self.clients:
953
if client.name == args:
1330
954
# Emit D-Bus signal
1331
955
client.Rejected()
1332
break
1333
else:
1334
logger.error(u"Unknown client %s is disabled", args)
1335
elif cmd == u"SENDING":
956
break
957
elif cmd == "SENDING":
1336
958
for client in self.clients:
1337
959
if client.name == args:
1338
logger.info(u"Sending secret to %s", client.name)
1339
960
client.checked_ok()
1340
if self.use_dbus:
961
if self.settings["use_dbus"]:
1341
962
# Emit D-Bus signal
1342
client.GotSecret()
1343
break
1344
else:
1345
logger.error(u"Sending secret to unknown client %s",
1346
args)
1347
elif cmd == u"GETATTR":
1348
attr_name, fpr = args.split(None, 1)
1349
for client in self.clients:
1350
if client.fingerprint == fpr:
1351
attr_value = getattr(client, attr_name, None)
1352
logger.debug("IPC reply: %r", attr_value)
1353
pickle.dump(attr_value, reply)
1354
break
1355
else:
1356
logger.error(u"Client %s on address %s requesting "
1357
u"attribute %s not found", fpr, address,
1358
attr_name)
1359
pickle.dump(None, reply)
963
client.ReceivedSecret()
964
break
1360
965
else:
1361
logger.error(u"Unknown IPC command: %r", cmdline)
966
logger.error("Unknown IPC command: %r", cmdline)
1362
967
1363
968
# Keep calling this function
1364
969
return True
1367
972
def string_to_delta(interval):
1368
973
"""Parse a string and return a datetime.timedelta
1369
974
1370
>>> string_to_delta(u'7d')
975
>>> string_to_delta('7d')
1371
976
datetime.timedelta(7)
1372
>>> string_to_delta(u'60s')
977
>>> string_to_delta('60s')
1373
978
datetime.timedelta(0, 60)
1374
>>> string_to_delta(u'60m')
979
>>> string_to_delta('60m')
1375
980
datetime.timedelta(0, 3600)
1376
>>> string_to_delta(u'24h')
981
>>> string_to_delta('24h')
1377
982
datetime.timedelta(1)
1378
983
>>> string_to_delta(u'1w')
1379
984
datetime.timedelta(7)
1380
>>> string_to_delta(u'5m 30s')
985
>>> string_to_delta('5m 30s')
1381
986
datetime.timedelta(0, 330)
1382
987
"""
1383
988
timevalue = datetime.timedelta(0)
1396
1001
elif suffix == u"w":
1397
1002
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1398
1003
else:
1399
raise ValueError(u"Unknown suffix %r" % suffix)
1400
except (ValueError, IndexError), e:
1401
raise ValueError(e.message)
1004
raise ValueError
1005
except (ValueError, IndexError):
1006
raise ValueError
1402
1007
timevalue += delta
1403
1008
return timevalue
1404
1009
1405
1010
1011
def server_state_changed(state):
1012
"""Derived from the Avahi example code"""
1013
if state == avahi.SERVER_COLLISION:
1014
logger.error(u"Zeroconf server name collision")
1015
service.remove()
1016
elif state == avahi.SERVER_RUNNING:
1017
service.add()
1018
1019
1020
def entry_group_state_changed(state, error):
1021
"""Derived from the Avahi example code"""
1022
logger.debug(u"Avahi state change: %i", state)
1023
1024
if state == avahi.ENTRY_GROUP_ESTABLISHED:
1025
logger.debug(u"Zeroconf service established.")
1026
elif state == avahi.ENTRY_GROUP_COLLISION:
1027
logger.warning(u"Zeroconf service name collision.")
1028
service.rename()
1029
elif state == avahi.ENTRY_GROUP_FAILURE:
1030
logger.critical(u"Avahi: Error in group state changed %s",
1031
unicode(error))
1032
raise AvahiGroupError(u"State changed: %s" % unicode(error))
1033
1406
1034
def if_nametoindex(interface):
1407
"""Call the C function if_nametoindex(), or equivalent
1408
1409
Note: This function cannot accept a unicode string."""
1035
"""Call the C function if_nametoindex(), or equivalent"""
1410
1036
global if_nametoindex
1411
1037
try:
1412
1038
if_nametoindex = (ctypes.cdll.LoadLibrary
1413
(ctypes.util.find_library(u"c"))
1039
(ctypes.util.find_library("c"))
1414
1040
.if_nametoindex)
1415
1041
except (OSError, AttributeError):
1416
logger.warning(u"Doing if_nametoindex the hard way")
1042
if "struct" not in sys.modules:
1043
import struct
1044
if "fcntl" not in sys.modules:
1045
import fcntl
1417
1046
def if_nametoindex(interface):
1418
1047
"Get an interface index the hard way, i.e. using fcntl()"
1419
1048
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1420
with contextlib.closing(socket.socket()) as s:
1049
with closing(socket.socket()) as s:
1421
1050
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1422
struct.pack(str(u"16s16x"),
1423
interface))
1424
interface_index = struct.unpack(str(u"I"),
1425
ifreq[16:20])[0]
1051
struct.pack("16s16x", interface))
1052
interface_index = struct.unpack("I", ifreq[16:20])[0]
1426
1053
return interface_index
1427
1054
return if_nametoindex(interface)
1428
1055
1429
1056
1430
1057
def daemon(nochdir = False, noclose = False):
1431
1058
"""See daemon(3). Standard BSD Unix function.
1432
1433
1059
This should really exist as os.daemon, but it doesn't (yet)."""
1434
1060
if os.fork():
1435
1061
sys.exit()
1436
1062
os.setsid()
1437
1063
if not nochdir:
1438
os.chdir(u"/")
1064
os.chdir("/")
1439
1065
if os.fork():
1440
1066
sys.exit()
1441
1067
if not noclose:
1443
1069
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1444
1070
if not stat.S_ISCHR(os.fstat(null).st_mode):
1445
1071
raise OSError(errno.ENODEV,
1446
u"%s not a character device"
1447
% os.path.devnull)
1072
"/dev/null not a character device")
1448
1073
os.dup2(null, sys.stdin.fileno())
1449
1074
os.dup2(null, sys.stdout.fileno())
1450
1075
os.dup2(null, sys.stderr.fileno())
1454
1079
1455
1080
def main():
1456
1081
1457
##################################################################
1082
######################################################################
1458
1083
# Parsing of options, both command line and config file
1459
1084
1460
1085
parser = optparse.OptionParser(version = "%%prog %s" % version)
1461
parser.add_option("-i", u"--interface", type=u"string",
1462
metavar="IF", help=u"Bind to interface IF")
1463
parser.add_option("-a", u"--address", type=u"string",
1464
help=u"Address to listen for requests on")
1465
parser.add_option("-p", u"--port", type=u"int",
1466
help=u"Port number to receive requests on")
1467
parser.add_option("--check", action=u"store_true",
1468
help=u"Run self-test")
1469
parser.add_option("--debug", action=u"store_true",
1470
help=u"Debug mode; run in foreground and log to"
1471
u" terminal")
1472
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1473
u" priority string (see GnuTLS documentation)")
1474
parser.add_option("--servicename", type=u"string",
1475
metavar=u"NAME", help=u"Zeroconf service name")
1476
parser.add_option("--configdir", type=u"string",
1477
default=u"/etc/mandos", metavar=u"DIR",
1478
help=u"Directory to search for configuration"
1479
u" files")
1480
parser.add_option("--no-dbus", action=u"store_false",
1481
dest=u"use_dbus", help=u"Do not provide D-Bus"
1482
u" system bus interface")
1483
parser.add_option("--no-ipv6", action=u"store_false",
1484
dest=u"use_ipv6", help=u"Do not use IPv6")
1086
parser.add_option("-i", "--interface", type="string",
1087
metavar="IF", help="Bind to interface IF")
1088
parser.add_option("-a", "--address", type="string",
1089
help="Address to listen for requests on")
1090
parser.add_option("-p", "--port", type="int",
1091
help="Port number to receive requests on")
1092
parser.add_option("--check", action="store_true",
1093
help="Run self-test")
1094
parser.add_option("--debug", action="store_true",
1095
help="Debug mode; run in foreground and log to"
1096
" terminal")
1097
parser.add_option("--priority", type="string", help="GnuTLS"
1098
" priority string (see GnuTLS documentation)")
1099
parser.add_option("--servicename", type="string", metavar="NAME",
1100
help="Zeroconf service name")
1101
parser.add_option("--configdir", type="string",
1102
default="/etc/mandos", metavar="DIR",
1103
help="Directory to search for configuration"
1104
" files")
1105
parser.add_option("--no-dbus", action="store_false",
1106
dest="use_dbus",
1107
help="Do not provide D-Bus system bus"
1108
" interface")
1109
parser.add_option("--no-ipv6", action="store_false",
1110
dest="use_ipv6", help="Do not use IPv6")
1485
1111
options = parser.parse_args()[0]
1486
1112
1487
1113
if options.check:
1490
1116
sys.exit()
1491
1117
1492
1118
# Default values for config file for server-global settings
1493
server_defaults = { u"interface": u"",
1494
u"address": u"",
1495
u"port": u"",
1496
u"debug": u"False",
1497
u"priority":
1498
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1499
u"servicename": u"Mandos",
1500
u"use_dbus": u"True",
1501
u"use_ipv6": u"True",
1119
server_defaults = { "interface": "",
1120
"address": "",
1121
"port": "",
1122
"debug": "False",
1123
"priority":
1124
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1125
"servicename": "Mandos",
1126
"use_dbus": "True",
1127
"use_ipv6": "True",
1502
1128
}
1503
1129
1504
1130
# Parse config file for server-global settings
1505
server_config = configparser.SafeConfigParser(server_defaults)
1131
server_config = ConfigParser.SafeConfigParser(server_defaults)
1506
1132
del server_defaults
1507
server_config.read(os.path.join(options.configdir,
1508
u"mandos.conf"))
1133
server_config.read(os.path.join(options.configdir, "mandos.conf"))
1509
1134
# Convert the SafeConfigParser object to a dict
1510
1135
server_settings = server_config.defaults()
1511
1136
# Use the appropriate methods on the non-string config options
1512
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1513
server_settings[option] = server_config.getboolean(u"DEFAULT",
1514
option)
1137
server_settings["debug"] = server_config.getboolean("DEFAULT",
1138
"debug")
1139
server_settings["use_dbus"] = server_config.getboolean("DEFAULT",
1140
"use_dbus")
1141
server_settings["use_ipv6"] = server_config.getboolean("DEFAULT",
1142
"use_ipv6")
1515
1143
if server_settings["port"]:
1516
server_settings["port"] = server_config.getint(u"DEFAULT",
1517
u"port")
1144
server_settings["port"] = server_config.getint("DEFAULT",
1145
"port")
1518
1146
del server_config
1519
1147
1520
1148
# Override the settings from the config file with command line
1521
1149
# options, if set.
1522
for option in (u"interface", u"address", u"port", u"debug",
1523
u"priority", u"servicename", u"configdir",
1524
u"use_dbus", u"use_ipv6"):
1150
for option in ("interface", "address", "port", "debug",
1151
"priority", "servicename", "configdir",
1152
"use_dbus", "use_ipv6"):
1525
1153
value = getattr(options, option)
1526
1154
if value is not None:
1527
1155
server_settings[option] = value
1528
1156
del options
1529
# Force all strings to be unicode
1530
for option in server_settings.keys():
1531
if type(server_settings[option]) is str:
1532
server_settings[option] = unicode(server_settings[option])
1533
1157
# Now we have our good server settings in "server_settings"
1534
1158
1535
1159
##################################################################
1536
1160
1537
1161
# For convenience
1538
debug = server_settings[u"debug"]
1539
use_dbus = server_settings[u"use_dbus"]
1540
use_ipv6 = server_settings[u"use_ipv6"]
1162
debug = server_settings["debug"]
1163
use_dbus = server_settings["use_dbus"]
1164
use_ipv6 = server_settings["use_ipv6"]
1541
1165
1542
1166
if not debug:
1543
1167
syslogger.setLevel(logging.WARNING)
1544
1168
console.setLevel(logging.WARNING)
1545
1169
1546
if server_settings[u"servicename"] != u"Mandos":
1170
if server_settings["servicename"] != "Mandos":
1547
1171
syslogger.setFormatter(logging.Formatter
1548
(u'Mandos (%s) [%%(process)d]:'
1549
u' %%(levelname)s: %%(message)s'
1550
% server_settings[u"servicename"]))
1172
('Mandos (%s) [%%(process)d]:'
1173
' %%(levelname)s: %%(message)s'
1174
% server_settings["servicename"]))
1551
1175
1552
1176
# Parse config file with clients
1553
client_defaults = { u"timeout": u"1h",
1554
u"interval": u"5m",
1555
u"checker": u"fping -q -- %%(host)s",
1556
u"host": u"",
1177
client_defaults = { "timeout": "1h",
1178
"interval": "5m",
1179
"checker": "fping -q -- %%(host)s",
1180
"host": "",
1557
1181
}
1558
client_config = configparser.SafeConfigParser(client_defaults)
1559
client_config.read(os.path.join(server_settings[u"configdir"],
1560
u"clients.conf"))
1561
1182
client_config = ConfigParser.SafeConfigParser(client_defaults)
1183
client_config.read(os.path.join(server_settings["configdir"],
1184
"clients.conf"))
1185
1562
1186
global mandos_dbus_service
1563
1187
mandos_dbus_service = None
1564
1188
1565
tcp_server = MandosServer((server_settings[u"address"],
1566
server_settings[u"port"]),
1567
ClientHandler,
1568
interface=server_settings[u"interface"],
1569
use_ipv6=use_ipv6,
1570
gnutls_priority=
1571
server_settings[u"priority"],
1572
use_dbus=use_dbus)
1573
pidfilename = u"/var/run/mandos.pid"
1189
clients = Set()
1190
tcp_server = IPv6_TCPServer((server_settings["address"],
1191
server_settings["port"]),
1192
TCP_handler,
1193
settings=server_settings,
1194
clients=clients, use_ipv6=use_ipv6)
1195
pidfilename = "/var/run/mandos.pid"
1574
1196
try:
1575
pidfile = open(pidfilename, u"w")
1197
pidfile = open(pidfilename, "w")
1576
1198
except IOError:
1577
logger.error(u"Could not open file %r", pidfilename)
1199
logger.error("Could not open file %r", pidfilename)
1578
1200
1579
1201
try:
1580
uid = pwd.getpwnam(u"_mandos").pw_uid
1581
gid = pwd.getpwnam(u"_mandos").pw_gid
1202
uid = pwd.getpwnam("_mandos").pw_uid
1203
gid = pwd.getpwnam("_mandos").pw_gid
1582
1204
except KeyError:
1583
1205
try:
1584
uid = pwd.getpwnam(u"mandos").pw_uid
1585
gid = pwd.getpwnam(u"mandos").pw_gid
1206
uid = pwd.getpwnam("mandos").pw_uid
1207
gid = pwd.getpwnam("mandos").pw_gid
1586
1208
except KeyError:
1587
1209
try:
1588
uid = pwd.getpwnam(u"nobody").pw_uid
1589
gid = pwd.getpwnam(u"nobody").pw_gid
1210
uid = pwd.getpwnam("nobody").pw_uid
1211
gid = pwd.getpwnam("nogroup").pw_gid
1590
1212
except KeyError:
1591
1213
uid = 65534
1592
1214
gid = 65534
1605
1227
1606
1228
@gnutls.library.types.gnutls_log_func
1607
1229
def debug_gnutls(level, string):
1608
logger.debug(u"GnuTLS: %s", string[:-1])
1230
logger.debug("GnuTLS: %s", string[:-1])
1609
1231
1610
1232
(gnutls.library.functions
1611
1233
.gnutls_global_set_log_function(debug_gnutls))
1612
1234
1235
global service
1236
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1237
service = AvahiService(name = server_settings["servicename"],
1238
servicetype = "_mandos._tcp",
1239
protocol = protocol)
1240
if server_settings["interface"]:
1241
service.interface = (if_nametoindex
1242
(server_settings["interface"]))
1243
1613
1244
global main_loop
1245
global bus
1246
global server
1614
1247
# From the Avahi example code
1615
1248
DBusGMainLoop(set_as_default=True )
1616
1249
main_loop = gobject.MainLoop()
1617
1250
bus = dbus.SystemBus()
1251
server = dbus.Interface(bus.get_object(avahi.DBUS_NAME,
1252
avahi.DBUS_PATH_SERVER),
1253
avahi.DBUS_INTERFACE_SERVER)
1618
1254
# End of Avahi example code
1619
1255
if use_dbus:
1620
try:
1621
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
1622
bus, do_not_queue=True)
1623
except dbus.exceptions.NameExistsException, e:
1624
logger.error(unicode(e) + u", disabling D-Bus")
1625
use_dbus = False
1626
server_settings[u"use_dbus"] = False
1627
tcp_server.use_dbus = False
1628
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1629
service = AvahiService(name = server_settings[u"servicename"],
1630
servicetype = u"_mandos._tcp",
1631
protocol = protocol, bus = bus)
1632
if server_settings["interface"]:
1633
service.interface = (if_nametoindex
1634
(str(server_settings[u"interface"])))
1256
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos", bus)
1635
1257
1636
1258
client_class = Client
1637
1259
if use_dbus:
1638
client_class = functools.partial(ClientDBus, bus = bus)
1639
tcp_server.clients.update(set(
1260
client_class = ClientDBus
1261
clients.update(Set(
1640
1262
client_class(name = section,
1641
1263
config= dict(client_config.items(section)))
1642
1264
for section in client_config.sections()))
1643
if not tcp_server.clients:
1265
if not clients:
1644
1266
logger.warning(u"No clients defined")
1645
1267
1646
1268
if debug:
1656
1278
daemon()
1657
1279
1658
1280
try:
1659
with pidfile:
1281
with closing(pidfile):
1660
1282
pid = os.getpid()
1661
1283
pidfile.write(str(pid) + "\n")
1662
1284
del pidfile
1668
1290
pass
1669
1291
del pidfilename
1670
1292
1293
def cleanup():
1294
"Cleanup function; run on exit"
1295
global group
1296
# From the Avahi example code
1297
if not group is None:
1298
group.Free()
1299
group = None
1300
# End of Avahi example code
1301
1302
while clients:
1303
client = clients.pop()
1304
client.disable_hook = None
1305
client.disable()
1306
1307
atexit.register(cleanup)
1308
1671
1309
if not debug:
1672
1310
signal.signal(signal.SIGINT, signal.SIG_IGN)
1673
1311
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1677
1315
class MandosDBusService(dbus.service.Object):
1678
1316
"""A D-Bus proxy object"""
1679
1317
def __init__(self):
1680
dbus.service.Object.__init__(self, bus, u"/")
1318
dbus.service.Object.__init__(self, bus, "/")
1681
1319
_interface = u"se.bsnet.fukt.Mandos"
1682
1320
1683
@dbus.service.signal(_interface, signature=u"o")
1684
def ClientAdded(self, objpath):
1685
"D-Bus signal"
1686
pass
1687
1688
@dbus.service.signal(_interface, signature=u"ss")
1689
def ClientNotFound(self, fingerprint, address):
1690
"D-Bus signal"
1691
pass
1692
1693
@dbus.service.signal(_interface, signature=u"os")
1321
@dbus.service.signal(_interface, signature="oa{sv}")
1322
def ClientAdded(self, objpath, properties):
1323
"D-Bus signal"
1324
pass
1325
1326
@dbus.service.signal(_interface, signature="s")
1327
def ClientNotFound(self, fingerprint):
1328
"D-Bus signal"
1329
pass
1330
1331
@dbus.service.signal(_interface, signature="os")
1694
1332
def ClientRemoved(self, objpath, name):
1695
1333
"D-Bus signal"
1696
1334
pass
1697
1335
1698
@dbus.service.method(_interface, out_signature=u"ao")
1336
@dbus.service.method(_interface, out_signature="ao")
1699
1337
def GetAllClients(self):
1700
1338
"D-Bus method"
1701
return dbus.Array(c.dbus_object_path
1702
for c in tcp_server.clients)
1339
return dbus.Array(c.dbus_object_path for c in clients)
1703
1340
1704
@dbus.service.method(_interface,
1705
out_signature=u"a{oa{sv}}")
1341
@dbus.service.method(_interface, out_signature="a{oa{sv}}")
1706
1342
def GetAllClientsWithProperties(self):
1707
1343
"D-Bus method"
1708
1344
return dbus.Dictionary(
1709
((c.dbus_object_path, c.GetAll(u""))
1710
for c in tcp_server.clients),
1711
signature=u"oa{sv}")
1345
((c.dbus_object_path, c.GetAllProperties())
1346
for c in clients),
1347
signature="oa{sv}")
1712
1348
1713
@dbus.service.method(_interface, in_signature=u"o")
1349
@dbus.service.method(_interface, in_signature="o")
1714
1350
def RemoveClient(self, object_path):
1715
1351
"D-Bus method"
1716
for c in tcp_server.clients:
1352
for c in clients:
1717
1353
if c.dbus_object_path == object_path:
1718
tcp_server.clients.remove(c)
1354
clients.remove(c)
1719
1355
c.remove_from_connection()
1720
1356
# Don't signal anything except ClientRemoved
1721
c.disable(quiet=True)
1357
c.disable(signal=False)
1722
1358
# Emit D-Bus signal
1723
1359
self.ClientRemoved(object_path, c.name)
1724
1360
return
1725
raise KeyError(object_path)
1361
raise KeyError
1726
1362
1727
1363
del _interface
1728
1364
1729
1365
mandos_dbus_service = MandosDBusService()
1730
1366
1731
def cleanup():
1732
"Cleanup function; run on exit"
1733
service.cleanup()
1734
1735
while tcp_server.clients:
1736
client = tcp_server.clients.pop()
1737
if use_dbus:
1738
client.remove_from_connection()
1739
client.disable_hook = None
1740
# Don't signal anything except ClientRemoved
1741
client.disable(quiet=True)
1742
if use_dbus:
1743
# Emit D-Bus signal
1744
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
1745
client.name)
1746
1747
atexit.register(cleanup)
1748
1749
for client in tcp_server.clients:
1367
for client in clients:
1750
1368
if use_dbus:
1751
1369
# Emit D-Bus signal
1752
mandos_dbus_service.ClientAdded(client.dbus_object_path)
1370
mandos_dbus_service.ClientAdded(client.dbus_object_path,
1371
client.GetAllProperties())
1753
1372
client.enable()
1754
1373
1755
1374
tcp_server.enable()
1769
1388
1770
1389
try:
1771
1390
# From the Avahi example code
1391
server.connect_to_signal("StateChanged", server_state_changed)
1772
1392
try:
1773
service.activate()
1393
server_state_changed(server.GetState())
1774
1394
except dbus.exceptions.DBusException, error:
1775
1395
logger.critical(u"DBusException: %s", error)
1776
cleanup()
1777
1396
sys.exit(1)
1778
1397
# End of Avahi example code
1779
1398
1786
1405
main_loop.run()
1787
1406
except AvahiError, error:
1788
1407
logger.critical(u"AvahiError: %s", error)
1789
cleanup()
1790
1408
sys.exit(1)
1791
1409
except KeyboardInterrupt:
1792
1410
if debug:
1793
1411
print >> sys.stderr
1794
logger.debug(u"Server received KeyboardInterrupt")
1795
logger.debug(u"Server exiting")
1796
# Must run before the D-Bus bus name gets deregistered
1797
cleanup()
1412
logger.debug("Server received KeyboardInterrupt")
1413
logger.debug("Server exiting")
1798
1414
1799
1415
if __name__ == '__main__':
1800
1416
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0