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- Committer: Björn Påhlsson
- Date: 2009-06-20 21:07:26 UTC
- mfrom: (350 mandos)
- mto: (24.1.154 mandos) (237.4.3 mandos-release)
- mto: This revision was merged to the branch mainline in revision 415.
- Revision ID: belorn@braxen-20090620210726-32wcz3of9moo8dh6
merge
- 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" and "remove" in the "AvahiService" class, the
10
# "server_state_changed" and "entry_group_state_changed" functions,
11
# and some lines in "main".
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".
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
36
import SocketServer as 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
47
import ConfigParser as configparser
48
48
import sys
49
49
import re
50
50
import os
51
51
import signal
52
from sets import Set
53
52
import subprocess
54
53
import atexit
55
54
import stat
57
56
import logging.handlers
58
57
import pwd
59
58
from contextlib import closing
59
import struct
60
import fcntl
61
import functools
60
62
61
63
import dbus
62
64
import dbus.service
66
68
import ctypes
67
69
import ctypes.util
68
70
69
version = "1.0.8"
70
71
logger = logging.Logger('mandos')
71
try:
72
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
73
except AttributeError:
74
try:
75
from IN import SO_BINDTODEVICE
76
except ImportError:
77
SO_BINDTODEVICE = None
78
79
80
version = "1.0.11"
81
82
logger = logging.Logger(u'mandos')
72
83
syslogger = (logging.handlers.SysLogHandler
73
84
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
74
85
address = "/dev/log"))
75
86
syslogger.setFormatter(logging.Formatter
76
('Mandos [%(process)d]: %(levelname)s:'
77
' %(message)s'))
87
(u'Mandos [%(process)d]: %(levelname)s:'
88
u' %(message)s'))
78
89
logger.addHandler(syslogger)
79
90
80
91
console = logging.StreamHandler()
81
console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'
82
' %(levelname)s: %(message)s'))
92
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
93
u' %(levelname)s:'
94
u' %(message)s'))
83
95
logger.addHandler(console)
84
96
85
97
class AvahiError(Exception):
98
110
99
111
class AvahiService(object):
100
112
"""An Avahi (Zeroconf) service.
113
101
114
Attributes:
102
115
interface: integer; avahi.IF_UNSPEC or an interface index.
103
116
Used to optionally bind to the specified interface.
104
name: string; Example: 'Mandos'
105
type: string; Example: '_mandos._tcp'.
117
name: string; Example: u'Mandos'
118
type: string; Example: u'_mandos._tcp'.
106
119
See <http://www.dns-sd.org/ServiceTypes.html>
107
120
port: integer; what port to announce
108
121
TXT: list of strings; TXT record for the service
111
124
max_renames: integer; maximum number of renames
112
125
rename_count: integer; counter so we only rename after collisions
113
126
a sensible number of times
127
group: D-Bus Entry Group
128
server: D-Bus Server
129
bus: dbus.SystemBus()
114
130
"""
115
131
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
116
132
servicetype = None, port = None, TXT = None,
117
domain = "", host = "", max_renames = 32768,
118
protocol = avahi.PROTO_UNSPEC):
133
domain = u"", host = u"", max_renames = 32768,
134
protocol = avahi.PROTO_UNSPEC, bus = None):
119
135
self.interface = interface
120
136
self.name = name
121
137
self.type = servicetype
126
142
self.rename_count = 0
127
143
self.max_renames = max_renames
128
144
self.protocol = protocol
145
self.group = None # our entry group
146
self.server = None
147
self.bus = bus
129
148
def rename(self):
130
149
"""Derived from the Avahi example code"""
131
150
if self.rename_count >= self.max_renames:
133
152
u" after %i retries, exiting.",
134
153
self.rename_count)
135
154
raise AvahiServiceError(u"Too many renames")
136
self.name = server.GetAlternativeServiceName(self.name)
155
self.name = self.server.GetAlternativeServiceName(self.name)
137
156
logger.info(u"Changing Zeroconf service name to %r ...",
138
str(self.name))
157
unicode(self.name))
139
158
syslogger.setFormatter(logging.Formatter
140
('Mandos (%s) [%%(process)d]:'
141
' %%(levelname)s: %%(message)s'
159
(u'Mandos (%s) [%%(process)d]:'
160
u' %%(levelname)s: %%(message)s'
142
161
% self.name))
143
162
self.remove()
144
163
self.add()
145
164
self.rename_count += 1
146
165
def remove(self):
147
166
"""Derived from the Avahi example code"""
148
if group is not None:
149
group.Reset()
167
if self.group is not None:
168
self.group.Reset()
150
169
def add(self):
151
170
"""Derived from the Avahi example code"""
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)
171
if self.group is None:
172
self.group = dbus.Interface(
173
self.bus.get_object(avahi.DBUS_NAME,
174
self.server.EntryGroupNew()),
175
avahi.DBUS_INTERFACE_ENTRY_GROUP)
176
self.group.connect_to_signal('StateChanged',
177
self.entry_group_state_changed)
160
178
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
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)
179
self.name, self.type)
180
self.group.AddService(
181
self.interface,
182
self.protocol,
183
dbus.UInt32(0), # flags
184
self.name, self.type,
185
self.domain, self.host,
186
dbus.UInt16(self.port),
187
avahi.string_array_to_txt_array(self.TXT))
188
self.group.Commit()
189
def entry_group_state_changed(self, state, error):
190
"""Derived from the Avahi example code"""
191
logger.debug(u"Avahi state change: %i", state)
192
193
if state == avahi.ENTRY_GROUP_ESTABLISHED:
194
logger.debug(u"Zeroconf service established.")
195
elif state == avahi.ENTRY_GROUP_COLLISION:
196
logger.warning(u"Zeroconf service name collision.")
197
self.rename()
198
elif state == avahi.ENTRY_GROUP_FAILURE:
199
logger.critical(u"Avahi: Error in group state changed %s",
200
unicode(error))
201
raise AvahiGroupError(u"State changed: %s"
202
% unicode(error))
203
def cleanup(self):
204
"""Derived from the Avahi example code"""
205
if self.group is not None:
206
self.group.Free()
207
self.group = None
208
def server_state_changed(self, state):
209
"""Derived from the Avahi example code"""
210
if state == avahi.SERVER_COLLISION:
211
logger.error(u"Zeroconf server name collision")
212
self.remove()
213
elif state == avahi.SERVER_RUNNING:
214
self.add()
215
def activate(self):
216
"""Derived from the Avahi example code"""
217
if self.server is None:
218
self.server = dbus.Interface(
219
self.bus.get_object(avahi.DBUS_NAME,
220
avahi.DBUS_PATH_SERVER),
221
avahi.DBUS_INTERFACE_SERVER)
222
self.server.connect_to_signal(u"StateChanged",
223
self.server_state_changed)
224
self.server_state_changed(self.server.GetState())
180
225
181
226
182
227
class Client(object):
183
228
"""A representation of a client host served by this server.
229
184
230
Attributes:
185
231
name: string; from the config file, used in log messages and
186
232
D-Bus identifiers
208
254
instance %(name)s can be used in the command.
209
255
current_checker_command: string; current running checker_command
210
256
"""
257
258
@staticmethod
259
def _datetime_to_milliseconds(dt):
260
"Convert a datetime.datetime() to milliseconds"
261
return ((dt.days * 24 * 60 * 60 * 1000)
262
+ (dt.seconds * 1000)
263
+ (dt.microseconds // 1000))
264
211
265
def timeout_milliseconds(self):
212
266
"Return the 'timeout' attribute in milliseconds"
213
return ((self.timeout.days * 24 * 60 * 60 * 1000)
214
+ (self.timeout.seconds * 1000)
215
+ (self.timeout.microseconds // 1000))
267
return self._datetime_to_milliseconds(self.timeout)
216
268
217
269
def interval_milliseconds(self):
218
270
"Return the 'interval' attribute in milliseconds"
219
return ((self.interval.days * 24 * 60 * 60 * 1000)
220
+ (self.interval.seconds * 1000)
221
+ (self.interval.microseconds // 1000))
271
return self._datetime_to_milliseconds(self.interval)
222
272
223
273
def __init__(self, name = None, disable_hook=None, config=None):
224
274
"""Note: the 'checker' key in 'config' sets the
231
281
# Uppercase and remove spaces from fingerprint for later
232
282
# comparison purposes with return value from the fingerprint()
233
283
# function
234
self.fingerprint = (config["fingerprint"].upper()
284
self.fingerprint = (config[u"fingerprint"].upper()
235
285
.replace(u" ", u""))
236
286
logger.debug(u" Fingerprint: %s", self.fingerprint)
237
if "secret" in config:
238
self.secret = config["secret"].decode(u"base64")
239
elif "secfile" in config:
287
if u"secret" in config:
288
self.secret = config[u"secret"].decode(u"base64")
289
elif u"secfile" in config:
240
290
with closing(open(os.path.expanduser
241
291
(os.path.expandvars
242
(config["secfile"])))) as secfile:
292
(config[u"secfile"])))) as secfile:
243
293
self.secret = secfile.read()
244
294
else:
245
295
raise TypeError(u"No secret or secfile for client %s"
246
296
% self.name)
247
self.host = config.get("host", "")
297
self.host = config.get(u"host", u"")
248
298
self.created = datetime.datetime.utcnow()
249
299
self.enabled = False
250
300
self.last_enabled = None
251
301
self.last_checked_ok = None
252
self.timeout = string_to_delta(config["timeout"])
253
self.interval = string_to_delta(config["interval"])
302
self.timeout = string_to_delta(config[u"timeout"])
303
self.interval = string_to_delta(config[u"interval"])
254
304
self.disable_hook = disable_hook
255
305
self.checker = None
256
306
self.checker_initiator_tag = None
257
307
self.disable_initiator_tag = None
258
308
self.checker_callback_tag = None
259
self.checker_command = config["checker"]
309
self.checker_command = config[u"checker"]
260
310
self.current_checker_command = None
261
311
self.last_connect = None
262
312
263
313
def enable(self):
264
314
"""Start this client's checker and timeout hooks"""
315
if getattr(self, u"enabled", False):
316
# Already enabled
317
return
265
318
self.last_enabled = datetime.datetime.utcnow()
266
319
# Schedule a new checker to be started an 'interval' from now,
267
320
# and every interval from then on.
281
334
if not getattr(self, "enabled", False):
282
335
return False
283
336
logger.info(u"Disabling client %s", self.name)
284
if getattr(self, "disable_initiator_tag", False):
337
if getattr(self, u"disable_initiator_tag", False):
285
338
gobject.source_remove(self.disable_initiator_tag)
286
339
self.disable_initiator_tag = None
287
if getattr(self, "checker_initiator_tag", False):
340
if getattr(self, u"checker_initiator_tag", False):
288
341
gobject.source_remove(self.checker_initiator_tag)
289
342
self.checker_initiator_tag = None
290
343
self.stop_checker()
317
370
318
371
def checked_ok(self):
319
372
"""Bump up the timeout for this client.
373
320
374
This should only be called when the client has been seen,
321
375
alive and well.
322
376
"""
328
382
329
383
def start_checker(self):
330
384
"""Start a new checker subprocess if one is not running.
385
331
386
If a checker already exists, leave it running and do
332
387
nothing."""
333
388
# The reason for not killing a running checker is that if we
343
398
if self.checker is not None:
344
399
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
345
400
if pid:
346
logger.warning("Checker was a zombie")
401
logger.warning(u"Checker was a zombie")
347
402
gobject.source_remove(self.checker_callback_tag)
348
403
self.checker_callback(pid, status,
349
404
self.current_checker_command)
354
409
command = self.checker_command % self.host
355
410
except TypeError:
356
411
# Escape attributes for the shell
357
escaped_attrs = dict((key, re.escape(str(val)))
412
escaped_attrs = dict((key,
413
re.escape(unicode(str(val),
414
errors=
415
u'replace')))
358
416
for key, val in
359
417
vars(self).iteritems())
360
418
try:
373
431
# always replaced by /dev/null.)
374
432
self.checker = subprocess.Popen(command,
375
433
close_fds=True,
376
shell=True, cwd="/")
434
shell=True, cwd=u"/")
377
435
self.checker_callback_tag = (gobject.child_watch_add
378
436
(self.checker.pid,
379
437
self.checker_callback,
395
453
if self.checker_callback_tag:
396
454
gobject.source_remove(self.checker_callback_tag)
397
455
self.checker_callback_tag = None
398
if getattr(self, "checker", None) is None:
456
if getattr(self, u"checker", None) is None:
399
457
return
400
458
logger.debug(u"Stopping checker for %(name)s", vars(self))
401
459
try:
410
468
411
469
def still_valid(self):
412
470
"""Has the timeout not yet passed for this client?"""
413
if not getattr(self, "enabled", False):
471
if not getattr(self, u"enabled", False):
414
472
return False
415
473
now = datetime.datetime.utcnow()
416
474
if self.last_checked_ok is None:
421
479
422
480
class ClientDBus(Client, dbus.service.Object):
423
481
"""A Client class using D-Bus
482
424
483
Attributes:
425
dbus_object_path: dbus.ObjectPath ; only set if self.use_dbus
484
dbus_object_path: dbus.ObjectPath
485
bus: dbus.SystemBus()
426
486
"""
427
487
# dbus.service.Object doesn't use super(), so we can't either.
428
488
429
def __init__(self, *args, **kwargs):
489
def __init__(self, bus = None, *args, **kwargs):
490
self.bus = bus
430
491
Client.__init__(self, *args, **kwargs)
431
492
# Only now, when this client is initialized, can it show up on
432
493
# the D-Bus
433
494
self.dbus_object_path = (dbus.ObjectPath
434
("/clients/"
435
+ self.name.replace(".", "_")))
436
dbus.service.Object.__init__(self, bus,
495
(u"/clients/"
496
+ self.name.replace(u".", u"_")))
497
dbus.service.Object.__init__(self, self.bus,
437
498
self.dbus_object_path)
499
500
@staticmethod
501
def _datetime_to_dbus(dt, variant_level=0):
502
"""Convert a UTC datetime.datetime() to a D-Bus type."""
503
return dbus.String(dt.isoformat(),
504
variant_level=variant_level)
505
438
506
def enable(self):
439
oldstate = getattr(self, "enabled", False)
507
oldstate = getattr(self, u"enabled", False)
440
508
r = Client.enable(self)
441
509
if oldstate != self.enabled:
442
510
# Emit D-Bus signals
443
511
self.PropertyChanged(dbus.String(u"enabled"),
444
512
dbus.Boolean(True, variant_level=1))
445
self.PropertyChanged(dbus.String(u"last_enabled"),
446
(_datetime_to_dbus(self.last_enabled,
447
variant_level=1)))
513
self.PropertyChanged(
514
dbus.String(u"last_enabled"),
515
self._datetime_to_dbus(self.last_enabled,
516
variant_level=1))
448
517
return r
449
518
450
519
def disable(self, signal = True):
451
oldstate = getattr(self, "enabled", False)
520
oldstate = getattr(self, u"enabled", False)
452
521
r = Client.disable(self)
453
522
if signal and oldstate != self.enabled:
454
523
# Emit D-Bus signal
459
528
def __del__(self, *args, **kwargs):
460
529
try:
461
530
self.remove_from_connection()
462
except org.freedesktop.DBus.Python.LookupError:
531
except LookupError:
463
532
pass
464
dbus.service.Object.__del__(self, *args, **kwargs)
533
if hasattr(dbus.service.Object, u"__del__"):
534
dbus.service.Object.__del__(self, *args, **kwargs)
465
535
Client.__del__(self, *args, **kwargs)
466
536
467
537
def checker_callback(self, pid, condition, command,
491
561
# Emit D-Bus signal
492
562
self.PropertyChanged(
493
563
dbus.String(u"last_checked_ok"),
494
(_datetime_to_dbus(self.last_checked_ok,
495
variant_level=1)))
564
(self._datetime_to_dbus(self.last_checked_ok,
565
variant_level=1)))
496
566
return r
497
567
498
568
def start_checker(self, *args, **kwargs):
502
572
else:
503
573
old_checker_pid = None
504
574
r = Client.start_checker(self, *args, **kwargs)
505
# Only emit D-Bus signal if new checker process was started
506
if ((self.checker is not None)
507
and not (old_checker is not None
508
and old_checker_pid == self.checker.pid)):
575
# Only if new checker process was started
576
if (self.checker is not None
577
and old_checker_pid != self.checker.pid):
578
# Emit D-Bus signal
509
579
self.CheckerStarted(self.current_checker_command)
510
580
self.PropertyChanged(
511
dbus.String("checker_running"),
581
dbus.String(u"checker_running"),
512
582
dbus.Boolean(True, variant_level=1))
513
583
return r
514
584
515
585
def stop_checker(self, *args, **kwargs):
516
old_checker = getattr(self, "checker", None)
586
old_checker = getattr(self, u"checker", None)
517
587
r = Client.stop_checker(self, *args, **kwargs)
518
588
if (old_checker is not None
519
and getattr(self, "checker", None) is None):
589
and getattr(self, u"checker", None) is None):
520
590
self.PropertyChanged(dbus.String(u"checker_running"),
521
591
dbus.Boolean(False, variant_level=1))
522
592
return r
525
595
_interface = u"se.bsnet.fukt.Mandos.Client"
526
596
527
597
# CheckedOK - method
528
CheckedOK = dbus.service.method(_interface)(checked_ok)
529
CheckedOK.__name__ = "CheckedOK"
598
@dbus.service.method(_interface)
599
def CheckedOK(self):
600
return self.checked_ok()
530
601
531
602
# CheckerCompleted - signal
532
@dbus.service.signal(_interface, signature="nxs")
603
@dbus.service.signal(_interface, signature=u"nxs")
533
604
def CheckerCompleted(self, exitcode, waitstatus, command):
534
605
"D-Bus signal"
535
606
pass
536
607
537
608
# CheckerStarted - signal
538
@dbus.service.signal(_interface, signature="s")
609
@dbus.service.signal(_interface, signature=u"s")
539
610
def CheckerStarted(self, command):
540
611
"D-Bus signal"
541
612
pass
542
613
543
614
# GetAllProperties - method
544
@dbus.service.method(_interface, out_signature="a{sv}")
615
@dbus.service.method(_interface, out_signature=u"a{sv}")
545
616
def GetAllProperties(self):
546
617
"D-Bus method"
547
618
return dbus.Dictionary({
548
dbus.String("name"):
619
dbus.String(u"name"):
549
620
dbus.String(self.name, variant_level=1),
550
dbus.String("fingerprint"):
621
dbus.String(u"fingerprint"):
551
622
dbus.String(self.fingerprint, variant_level=1),
552
dbus.String("host"):
623
dbus.String(u"host"):
553
624
dbus.String(self.host, variant_level=1),
554
dbus.String("created"):
555
_datetime_to_dbus(self.created, variant_level=1),
556
dbus.String("last_enabled"):
557
(_datetime_to_dbus(self.last_enabled,
558
variant_level=1)
625
dbus.String(u"created"):
626
self._datetime_to_dbus(self.created,
627
variant_level=1),
628
dbus.String(u"last_enabled"):
629
(self._datetime_to_dbus(self.last_enabled,
630
variant_level=1)
559
631
if self.last_enabled is not None
560
632
else dbus.Boolean(False, variant_level=1)),
561
dbus.String("enabled"):
633
dbus.String(u"enabled"):
562
634
dbus.Boolean(self.enabled, variant_level=1),
563
dbus.String("last_checked_ok"):
564
(_datetime_to_dbus(self.last_checked_ok,
565
variant_level=1)
635
dbus.String(u"last_checked_ok"):
636
(self._datetime_to_dbus(self.last_checked_ok,
637
variant_level=1)
566
638
if self.last_checked_ok is not None
567
639
else dbus.Boolean (False, variant_level=1)),
568
dbus.String("timeout"):
640
dbus.String(u"timeout"):
569
641
dbus.UInt64(self.timeout_milliseconds(),
570
642
variant_level=1),
571
dbus.String("interval"):
643
dbus.String(u"interval"):
572
644
dbus.UInt64(self.interval_milliseconds(),
573
645
variant_level=1),
574
dbus.String("checker"):
646
dbus.String(u"checker"):
575
647
dbus.String(self.checker_command,
576
648
variant_level=1),
577
dbus.String("checker_running"):
649
dbus.String(u"checker_running"):
578
650
dbus.Boolean(self.checker is not None,
579
651
variant_level=1),
580
dbus.String("object_path"):
652
dbus.String(u"object_path"):
581
653
dbus.ObjectPath(self.dbus_object_path,
582
654
variant_level=1)
583
}, signature="sv")
655
}, signature=u"sv")
584
656
585
657
# IsStillValid - method
586
@dbus.service.method(_interface, out_signature="b")
658
@dbus.service.method(_interface, out_signature=u"b")
587
659
def IsStillValid(self):
588
660
return self.still_valid()
589
661
590
662
# PropertyChanged - signal
591
@dbus.service.signal(_interface, signature="sv")
663
@dbus.service.signal(_interface, signature=u"sv")
592
664
def PropertyChanged(self, property, value):
593
665
"D-Bus signal"
594
666
pass
606
678
pass
607
679
608
680
# SetChecker - method
609
@dbus.service.method(_interface, in_signature="s")
681
@dbus.service.method(_interface, in_signature=u"s")
610
682
def SetChecker(self, checker):
611
683
"D-Bus setter method"
612
684
self.checker_command = checker
616
688
variant_level=1))
617
689
618
690
# SetHost - method
619
@dbus.service.method(_interface, in_signature="s")
691
@dbus.service.method(_interface, in_signature=u"s")
620
692
def SetHost(self, host):
621
693
"D-Bus setter method"
622
694
self.host = host
625
697
dbus.String(self.host, variant_level=1))
626
698
627
699
# SetInterval - method
628
@dbus.service.method(_interface, in_signature="t")
700
@dbus.service.method(_interface, in_signature=u"t")
629
701
def SetInterval(self, milliseconds):
630
702
self.interval = datetime.timedelta(0, 0, 0, milliseconds)
631
703
# Emit D-Bus signal
634
706
variant_level=1)))
635
707
636
708
# SetSecret - method
637
@dbus.service.method(_interface, in_signature="ay",
709
@dbus.service.method(_interface, in_signature=u"ay",
638
710
byte_arrays=True)
639
711
def SetSecret(self, secret):
640
712
"D-Bus setter method"
641
713
self.secret = str(secret)
642
714
643
715
# SetTimeout - method
644
@dbus.service.method(_interface, in_signature="t")
716
@dbus.service.method(_interface, in_signature=u"t")
645
717
def SetTimeout(self, milliseconds):
646
718
self.timeout = datetime.timedelta(0, 0, 0, milliseconds)
647
719
# Emit D-Bus signal
650
722
variant_level=1)))
651
723
652
724
# Enable - method
653
Enable = dbus.service.method(_interface)(enable)
654
Enable.__name__ = "Enable"
725
@dbus.service.method(_interface)
726
def Enable(self):
727
"D-Bus method"
728
self.enable()
655
729
656
730
# StartChecker - method
657
731
@dbus.service.method(_interface)
666
740
self.disable()
667
741
668
742
# StopChecker - method
669
StopChecker = dbus.service.method(_interface)(stop_checker)
670
StopChecker.__name__ = "StopChecker"
743
@dbus.service.method(_interface)
744
def StopChecker(self):
745
self.stop_checker()
671
746
672
747
del _interface
673
748
674
749
675
def peer_certificate(session):
676
"Return the peer's OpenPGP certificate as a bytestring"
677
# If not an OpenPGP certificate...
678
if (gnutls.library.functions
679
.gnutls_certificate_type_get(session._c_object)
680
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
681
# ...do the normal thing
682
return session.peer_certificate
683
list_size = ctypes.c_uint(1)
684
cert_list = (gnutls.library.functions
685
.gnutls_certificate_get_peers
686
(session._c_object, ctypes.byref(list_size)))
687
if not bool(cert_list) and list_size.value != 0:
688
raise gnutls.errors.GNUTLSError("error getting peer"
689
" certificate")
690
if list_size.value == 0:
691
return None
692
cert = cert_list[0]
693
return ctypes.string_at(cert.data, cert.size)
694
695
696
def fingerprint(openpgp):
697
"Convert an OpenPGP bytestring to a hexdigit fingerprint string"
698
# New GnuTLS "datum" with the OpenPGP public key
699
datum = (gnutls.library.types
700
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
701
ctypes.POINTER
702
(ctypes.c_ubyte)),
703
ctypes.c_uint(len(openpgp))))
704
# New empty GnuTLS certificate
705
crt = gnutls.library.types.gnutls_openpgp_crt_t()
706
(gnutls.library.functions
707
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
708
# Import the OpenPGP public key into the certificate
709
(gnutls.library.functions
710
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
711
gnutls.library.constants
712
.GNUTLS_OPENPGP_FMT_RAW))
713
# Verify the self signature in the key
714
crtverify = ctypes.c_uint()
715
(gnutls.library.functions
716
.gnutls_openpgp_crt_verify_self(crt, 0, ctypes.byref(crtverify)))
717
if crtverify.value != 0:
718
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
719
raise gnutls.errors.CertificateSecurityError("Verify failed")
720
# New buffer for the fingerprint
721
buf = ctypes.create_string_buffer(20)
722
buf_len = ctypes.c_size_t()
723
# Get the fingerprint from the certificate into the buffer
724
(gnutls.library.functions
725
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
726
ctypes.byref(buf_len)))
727
# Deinit the certificate
728
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
729
# Convert the buffer to a Python bytestring
730
fpr = ctypes.string_at(buf, buf_len.value)
731
# Convert the bytestring to hexadecimal notation
732
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
733
return hex_fpr
734
735
736
class TCP_handler(SocketServer.BaseRequestHandler, object):
737
"""A TCP request handler class.
738
Instantiated by IPv6_TCPServer for each request to handle it.
750
class ClientHandler(socketserver.BaseRequestHandler, object):
751
"""A class to handle client connections.
752
753
Instantiated once for each connection to handle it.
739
754
Note: This will run in its own forked process."""
740
755
741
756
def handle(self):
743
758
unicode(self.client_address))
744
759
logger.debug(u"IPC Pipe FD: %d", self.server.pipe[1])
745
760
# Open IPC pipe to parent process
746
with closing(os.fdopen(self.server.pipe[1], "w", 1)) as ipc:
761
with closing(os.fdopen(self.server.pipe[1], u"w", 1)) as ipc:
747
762
session = (gnutls.connection
748
763
.ClientSession(self.request,
749
764
gnutls.connection
763
778
# no X.509 keys are added to it. Therefore, we can use it
764
779
# here despite using OpenPGP certificates.
765
780
766
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
767
# "+AES-256-CBC", "+SHA1",
768
# "+COMP-NULL", "+CTYPE-OPENPGP",
769
# "+DHE-DSS"))
781
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
782
# u"+AES-256-CBC", u"+SHA1",
783
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
784
# u"+DHE-DSS"))
770
785
# Use a fallback default, since this MUST be set.
771
priority = self.server.settings.get("priority", "NORMAL")
786
priority = self.server.gnutls_priority
787
if priority is None:
788
priority = u"NORMAL"
772
789
(gnutls.library.functions
773
790
.gnutls_priority_set_direct(session._c_object,
774
791
priority, None))
782
799
return
783
800
logger.debug(u"Handshake succeeded")
784
801
try:
785
fpr = fingerprint(peer_certificate(session))
802
fpr = self.fingerprint(self.peer_certificate(session))
786
803
except (TypeError, gnutls.errors.GNUTLSError), error:
787
804
logger.warning(u"Bad certificate: %s", error)
788
805
session.bye()
794
811
client = c
795
812
break
796
813
else:
797
logger.warning(u"Client not found for fingerprint: %s",
798
fpr)
799
ipc.write("NOTFOUND %s\n" % fpr)
814
ipc.write(u"NOTFOUND %s\n" % fpr)
800
815
session.bye()
801
816
return
802
817
# Have to check if client.still_valid(), since it is
803
818
# possible that the client timed out while establishing
804
819
# the GnuTLS session.
805
820
if not client.still_valid():
806
logger.warning(u"Client %(name)s is invalid",
807
vars(client))
808
ipc.write("INVALID %s\n" % client.name)
821
ipc.write(u"INVALID %s\n" % client.name)
809
822
session.bye()
810
823
return
811
ipc.write("SENDING %s\n" % client.name)
824
ipc.write(u"SENDING %s\n" % client.name)
812
825
sent_size = 0
813
826
while sent_size < len(client.secret):
814
827
sent = session.send(client.secret[sent_size:])
817
830
- (sent_size + sent))
818
831
sent_size += sent
819
832
session.bye()
820
821
822
class ForkingMixInWithPipe(SocketServer.ForkingMixIn, object):
823
"""Like SocketServer.ForkingMixIn, but also pass a pipe.
824
Assumes a gobject.MainLoop event loop.
825
"""
833
834
@staticmethod
835
def peer_certificate(session):
836
"Return the peer's OpenPGP certificate as a bytestring"
837
# If not an OpenPGP certificate...
838
if (gnutls.library.functions
839
.gnutls_certificate_type_get(session._c_object)
840
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
841
# ...do the normal thing
842
return session.peer_certificate
843
list_size = ctypes.c_uint(1)
844
cert_list = (gnutls.library.functions
845
.gnutls_certificate_get_peers
846
(session._c_object, ctypes.byref(list_size)))
847
if not bool(cert_list) and list_size.value != 0:
848
raise gnutls.errors.GNUTLSError(u"error getting peer"
849
u" certificate")
850
if list_size.value == 0:
851
return None
852
cert = cert_list[0]
853
return ctypes.string_at(cert.data, cert.size)
854
855
@staticmethod
856
def fingerprint(openpgp):
857
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
858
# New GnuTLS "datum" with the OpenPGP public key
859
datum = (gnutls.library.types
860
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
861
ctypes.POINTER
862
(ctypes.c_ubyte)),
863
ctypes.c_uint(len(openpgp))))
864
# New empty GnuTLS certificate
865
crt = gnutls.library.types.gnutls_openpgp_crt_t()
866
(gnutls.library.functions
867
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
868
# Import the OpenPGP public key into the certificate
869
(gnutls.library.functions
870
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
871
gnutls.library.constants
872
.GNUTLS_OPENPGP_FMT_RAW))
873
# Verify the self signature in the key
874
crtverify = ctypes.c_uint()
875
(gnutls.library.functions
876
.gnutls_openpgp_crt_verify_self(crt, 0,
877
ctypes.byref(crtverify)))
878
if crtverify.value != 0:
879
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
880
raise (gnutls.errors.CertificateSecurityError
881
(u"Verify failed"))
882
# New buffer for the fingerprint
883
buf = ctypes.create_string_buffer(20)
884
buf_len = ctypes.c_size_t()
885
# Get the fingerprint from the certificate into the buffer
886
(gnutls.library.functions
887
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
888
ctypes.byref(buf_len)))
889
# Deinit the certificate
890
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
891
# Convert the buffer to a Python bytestring
892
fpr = ctypes.string_at(buf, buf_len.value)
893
# Convert the bytestring to hexadecimal notation
894
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
895
return hex_fpr
896
897
898
class ForkingMixInWithPipe(socketserver.ForkingMixIn, object):
899
"""Like socketserver.ForkingMixIn, but also pass a pipe."""
826
900
def process_request(self, request, client_address):
827
"""This overrides and wraps the original process_request().
901
"""Overrides and wraps the original process_request().
902
828
903
This function creates a new pipe in self.pipe
829
904
"""
830
905
self.pipe = os.pipe()
831
906
super(ForkingMixInWithPipe,
832
907
self).process_request(request, client_address)
833
908
os.close(self.pipe[1]) # close write end
834
# Call "handle_ipc" for both data and EOF events
835
gobject.io_add_watch(self.pipe[0],
836
gobject.IO_IN | gobject.IO_HUP,
837
self.handle_ipc)
838
def handle_ipc(source, condition):
909
self.add_pipe(self.pipe[0])
910
def add_pipe(self, pipe):
839
911
"""Dummy function; override as necessary"""
840
os.close(source)
841
return False
912
os.close(pipe)
842
913
843
914
844
915
class IPv6_TCPServer(ForkingMixInWithPipe,
845
SocketServer.TCPServer, object):
916
socketserver.TCPServer, object):
846
917
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
918
847
919
Attributes:
848
settings: Server settings
849
clients: Set() of Client objects
850
920
enabled: Boolean; whether this server is activated yet
921
interface: None or a network interface name (string)
922
use_ipv6: Boolean; to use IPv6 or not
851
923
"""
852
address_family = socket.AF_INET6
853
def __init__(self, *args, **kwargs):
854
if "settings" in kwargs:
855
self.settings = kwargs["settings"]
856
del kwargs["settings"]
857
if "clients" in kwargs:
858
self.clients = kwargs["clients"]
859
del kwargs["clients"]
860
if "use_ipv6" in kwargs:
861
if not kwargs["use_ipv6"]:
862
self.address_family = socket.AF_INET
863
del kwargs["use_ipv6"]
864
self.enabled = False
865
super(IPv6_TCPServer, self).__init__(*args, **kwargs)
924
def __init__(self, server_address, RequestHandlerClass,
925
interface=None, use_ipv6=True):
926
self.interface = interface
927
if use_ipv6:
928
self.address_family = socket.AF_INET6
929
socketserver.TCPServer.__init__(self, server_address,
930
RequestHandlerClass)
866
931
def server_bind(self):
867
932
"""This overrides the normal server_bind() function
868
933
to bind to an interface if one was specified, and also NOT to
869
934
bind to an address or port if they were not specified."""
870
if self.settings["interface"]:
871
# 25 is from /usr/include/asm-i486/socket.h
872
SO_BINDTODEVICE = getattr(socket, "SO_BINDTODEVICE", 25)
873
try:
874
self.socket.setsockopt(socket.SOL_SOCKET,
875
SO_BINDTODEVICE,
876
self.settings["interface"])
877
except socket.error, error:
878
if error[0] == errno.EPERM:
879
logger.error(u"No permission to"
880
u" bind to interface %s",
881
self.settings["interface"])
882
else:
883
raise
935
if self.interface is not None:
936
if SO_BINDTODEVICE is None:
937
logger.error(u"SO_BINDTODEVICE does not exist;"
938
u" cannot bind to interface %s",
939
self.interface)
940
else:
941
try:
942
self.socket.setsockopt(socket.SOL_SOCKET,
943
SO_BINDTODEVICE,
944
str(self.interface
945
+ u'\0'))
946
except socket.error, error:
947
if error[0] == errno.EPERM:
948
logger.error(u"No permission to"
949
u" bind to interface %s",
950
self.interface)
951
elif error[0] == errno.ENOPROTOOPT:
952
logger.error(u"SO_BINDTODEVICE not available;"
953
u" cannot bind to interface %s",
954
self.interface)
955
else:
956
raise
884
957
# Only bind(2) the socket if we really need to.
885
958
if self.server_address[0] or self.server_address[1]:
886
959
if not self.server_address[0]:
887
960
if self.address_family == socket.AF_INET6:
888
any_address = "::" # in6addr_any
961
any_address = u"::" # in6addr_any
889
962
else:
890
963
any_address = socket.INADDR_ANY
891
964
self.server_address = (any_address,
893
966
elif not self.server_address[1]:
894
967
self.server_address = (self.server_address[0],
895
968
0)
896
# if self.settings["interface"]:
969
# if self.interface:
897
970
# self.server_address = (self.server_address[0],
898
971
# 0, # port
899
972
# 0, # flowinfo
900
973
# if_nametoindex
901
# (self.settings
902
# ["interface"]))
903
return super(IPv6_TCPServer, self).server_bind()
974
# (self.interface))
975
return socketserver.TCPServer.server_bind(self)
976
977
978
class MandosServer(IPv6_TCPServer):
979
"""Mandos server.
980
981
Attributes:
982
clients: set of Client objects
983
gnutls_priority GnuTLS priority string
984
use_dbus: Boolean; to emit D-Bus signals or not
985
clients: set of Client objects
986
gnutls_priority GnuTLS priority string
987
use_dbus: Boolean; to emit D-Bus signals or not
988
989
Assumes a gobject.MainLoop event loop.
990
"""
991
def __init__(self, server_address, RequestHandlerClass,
992
interface=None, use_ipv6=True, clients=None,
993
gnutls_priority=None, use_dbus=True):
994
self.enabled = False
995
self.clients = clients
996
if self.clients is None:
997
self.clients = set()
998
self.use_dbus = use_dbus
999
self.gnutls_priority = gnutls_priority
1000
IPv6_TCPServer.__init__(self, server_address,
1001
RequestHandlerClass,
1002
interface = interface,
1003
use_ipv6 = use_ipv6)
904
1004
def server_activate(self):
905
1005
if self.enabled:
906
return super(IPv6_TCPServer, self).server_activate()
1006
return socketserver.TCPServer.server_activate(self)
907
1007
def enable(self):
908
1008
self.enabled = True
1009
def add_pipe(self, pipe):
1010
# Call "handle_ipc" for both data and EOF events
1011
gobject.io_add_watch(pipe, gobject.IO_IN | gobject.IO_HUP,
1012
self.handle_ipc)
909
1013
def handle_ipc(self, source, condition, file_objects={}):
910
1014
condition_names = {
911
gobject.IO_IN: "IN", # There is data to read.
912
gobject.IO_OUT: "OUT", # Data can be written (without
913
# blocking).
914
gobject.IO_PRI: "PRI", # There is urgent data to read.
915
gobject.IO_ERR: "ERR", # Error condition.
916
gobject.IO_HUP: "HUP" # Hung up (the connection has been
917
# broken, usually for pipes and
918
# sockets).
1015
gobject.IO_IN: u"IN", # There is data to read.
1016
gobject.IO_OUT: u"OUT", # Data can be written (without
1017
# blocking).
1018
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1019
gobject.IO_ERR: u"ERR", # Error condition.
1020
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1021
# broken, usually for pipes and
1022
# sockets).
919
1023
}
920
1024
conditions_string = ' | '.join(name
921
1025
for cond, name in
922
1026
condition_names.iteritems()
923
1027
if cond & condition)
924
logger.debug("Handling IPC: FD = %d, condition = %s", source,
1028
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
925
1029
conditions_string)
926
1030
927
1031
# Turn the pipe file descriptor into a Python file object
928
1032
if source not in file_objects:
929
file_objects[source] = os.fdopen(source, "r", 1)
1033
file_objects[source] = os.fdopen(source, u"r", 1)
930
1034
931
1035
# Read a line from the file object
932
1036
cmdline = file_objects[source].readline()
938
1042
# Stop calling this function
939
1043
return False
940
1044
941
logger.debug("IPC command: %r\n" % cmdline)
1045
logger.debug(u"IPC command: %r", cmdline)
942
1046
943
1047
# Parse and act on command
944
cmd, args = cmdline.split(None, 1)
945
if cmd == "NOTFOUND":
946
if self.settings["use_dbus"]:
1048
cmd, args = cmdline.rstrip(u"\r\n").split(None, 1)
1049
1050
if cmd == u"NOTFOUND":
1051
logger.warning(u"Client not found for fingerprint: %s",
1052
args)
1053
if self.use_dbus:
947
1054
# Emit D-Bus signal
948
1055
mandos_dbus_service.ClientNotFound(args)
949
elif cmd == "INVALID":
950
if self.settings["use_dbus"]:
951
for client in self.clients:
952
if client.name == args:
1056
elif cmd == u"INVALID":
1057
for client in self.clients:
1058
if client.name == args:
1059
logger.warning(u"Client %s is invalid", args)
1060
if self.use_dbus:
953
1061
# Emit D-Bus signal
954
1062
client.Rejected()
955
break
956
elif cmd == "SENDING":
1063
break
1064
else:
1065
logger.error(u"Unknown client %s is invalid", args)
1066
elif cmd == u"SENDING":
957
1067
for client in self.clients:
958
1068
if client.name == args:
1069
logger.info(u"Sending secret to %s", client.name)
959
1070
client.checked_ok()
960
if self.settings["use_dbus"]:
1071
if self.use_dbus:
961
1072
# Emit D-Bus signal
962
1073
client.ReceivedSecret()
963
1074
break
1075
else:
1076
logger.error(u"Sending secret to unknown client %s",
1077
args)
964
1078
else:
965
logger.error("Unknown IPC command: %r", cmdline)
1079
logger.error(u"Unknown IPC command: %r", cmdline)
966
1080
967
1081
# Keep calling this function
968
1082
return True
971
1085
def string_to_delta(interval):
972
1086
"""Parse a string and return a datetime.timedelta
973
1087
974
>>> string_to_delta('7d')
1088
>>> string_to_delta(u'7d')
975
1089
datetime.timedelta(7)
976
>>> string_to_delta('60s')
1090
>>> string_to_delta(u'60s')
977
1091
datetime.timedelta(0, 60)
978
>>> string_to_delta('60m')
1092
>>> string_to_delta(u'60m')
979
1093
datetime.timedelta(0, 3600)
980
>>> string_to_delta('24h')
1094
>>> string_to_delta(u'24h')
981
1095
datetime.timedelta(1)
982
1096
>>> string_to_delta(u'1w')
983
1097
datetime.timedelta(7)
984
>>> string_to_delta('5m 30s')
1098
>>> string_to_delta(u'5m 30s')
985
1099
datetime.timedelta(0, 330)
986
1100
"""
987
1101
timevalue = datetime.timedelta(0)
1007
1121
return timevalue
1008
1122
1009
1123
1010
def server_state_changed(state):
1011
"""Derived from the Avahi example code"""
1012
if state == avahi.SERVER_COLLISION:
1013
logger.error(u"Zeroconf server name collision")
1014
service.remove()
1015
elif state == avahi.SERVER_RUNNING:
1016
service.add()
1017
1018
1019
def entry_group_state_changed(state, error):
1020
"""Derived from the Avahi example code"""
1021
logger.debug(u"Avahi state change: %i", state)
1022
1023
if state == avahi.ENTRY_GROUP_ESTABLISHED:
1024
logger.debug(u"Zeroconf service established.")
1025
elif state == avahi.ENTRY_GROUP_COLLISION:
1026
logger.warning(u"Zeroconf service name collision.")
1027
service.rename()
1028
elif state == avahi.ENTRY_GROUP_FAILURE:
1029
logger.critical(u"Avahi: Error in group state changed %s",
1030
unicode(error))
1031
raise AvahiGroupError(u"State changed: %s" % unicode(error))
1032
1033
1124
def if_nametoindex(interface):
1034
"""Call the C function if_nametoindex(), or equivalent"""
1125
"""Call the C function if_nametoindex(), or equivalent
1126
1127
Note: This function cannot accept a unicode string."""
1035
1128
global if_nametoindex
1036
1129
try:
1037
1130
if_nametoindex = (ctypes.cdll.LoadLibrary
1038
(ctypes.util.find_library("c"))
1131
(ctypes.util.find_library(u"c"))
1039
1132
.if_nametoindex)
1040
1133
except (OSError, AttributeError):
1041
if "struct" not in sys.modules:
1042
import struct
1043
if "fcntl" not in sys.modules:
1044
import fcntl
1134
logger.warning(u"Doing if_nametoindex the hard way")
1045
1135
def if_nametoindex(interface):
1046
1136
"Get an interface index the hard way, i.e. using fcntl()"
1047
1137
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1048
1138
with closing(socket.socket()) as s:
1049
1139
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1050
struct.pack("16s16x", interface))
1051
interface_index = struct.unpack("I", ifreq[16:20])[0]
1140
struct.pack(str(u"16s16x"),
1141
interface))
1142
interface_index = struct.unpack(str(u"I"),
1143
ifreq[16:20])[0]
1052
1144
return interface_index
1053
1145
return if_nametoindex(interface)
1054
1146
1055
1147
1056
1148
def daemon(nochdir = False, noclose = False):
1057
1149
"""See daemon(3). Standard BSD Unix function.
1150
1058
1151
This should really exist as os.daemon, but it doesn't (yet)."""
1059
1152
if os.fork():
1060
1153
sys.exit()
1061
1154
os.setsid()
1062
1155
if not nochdir:
1063
os.chdir("/")
1156
os.chdir(u"/")
1064
1157
if os.fork():
1065
1158
sys.exit()
1066
1159
if not noclose:
1068
1161
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1069
1162
if not stat.S_ISCHR(os.fstat(null).st_mode):
1070
1163
raise OSError(errno.ENODEV,
1071
"/dev/null not a character device")
1164
u"/dev/null not a character device")
1072
1165
os.dup2(null, sys.stdin.fileno())
1073
1166
os.dup2(null, sys.stdout.fileno())
1074
1167
os.dup2(null, sys.stderr.fileno())
1082
1175
# Parsing of options, both command line and config file
1083
1176
1084
1177
parser = optparse.OptionParser(version = "%%prog %s" % version)
1085
parser.add_option("-i", "--interface", type="string",
1086
metavar="IF", help="Bind to interface IF")
1087
parser.add_option("-a", "--address", type="string",
1088
help="Address to listen for requests on")
1089
parser.add_option("-p", "--port", type="int",
1090
help="Port number to receive requests on")
1091
parser.add_option("--check", action="store_true",
1092
help="Run self-test")
1093
parser.add_option("--debug", action="store_true",
1094
help="Debug mode; run in foreground and log to"
1095
" terminal")
1096
parser.add_option("--priority", type="string", help="GnuTLS"
1097
" priority string (see GnuTLS documentation)")
1098
parser.add_option("--servicename", type="string", metavar="NAME",
1099
help="Zeroconf service name")
1100
parser.add_option("--configdir", type="string",
1101
default="/etc/mandos", metavar="DIR",
1102
help="Directory to search for configuration"
1103
" files")
1104
parser.add_option("--no-dbus", action="store_false",
1105
dest="use_dbus",
1106
help="Do not provide D-Bus system bus"
1107
" interface")
1108
parser.add_option("--no-ipv6", action="store_false",
1109
dest="use_ipv6", help="Do not use IPv6")
1178
parser.add_option("-i", u"--interface", type=u"string",
1179
metavar="IF", help=u"Bind to interface IF")
1180
parser.add_option("-a", u"--address", type=u"string",
1181
help=u"Address to listen for requests on")
1182
parser.add_option("-p", u"--port", type=u"int",
1183
help=u"Port number to receive requests on")
1184
parser.add_option("--check", action=u"store_true",
1185
help=u"Run self-test")
1186
parser.add_option("--debug", action=u"store_true",
1187
help=u"Debug mode; run in foreground and log to"
1188
u" terminal")
1189
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1190
u" priority string (see GnuTLS documentation)")
1191
parser.add_option("--servicename", type=u"string",
1192
metavar=u"NAME", help=u"Zeroconf service name")
1193
parser.add_option("--configdir", type=u"string",
1194
default=u"/etc/mandos", metavar=u"DIR",
1195
help=u"Directory to search for configuration"
1196
u" files")
1197
parser.add_option("--no-dbus", action=u"store_false",
1198
dest=u"use_dbus", help=u"Do not provide D-Bus"
1199
u" system bus interface")
1200
parser.add_option("--no-ipv6", action=u"store_false",
1201
dest=u"use_ipv6", help=u"Do not use IPv6")
1110
1202
options = parser.parse_args()[0]
1111
1203
1112
1204
if options.check:
1115
1207
sys.exit()
1116
1208
1117
1209
# Default values for config file for server-global settings
1118
server_defaults = { "interface": "",
1119
"address": "",
1120
"port": "",
1121
"debug": "False",
1122
"priority":
1123
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1124
"servicename": "Mandos",
1125
"use_dbus": "True",
1126
"use_ipv6": "True",
1210
server_defaults = { u"interface": u"",
1211
u"address": u"",
1212
u"port": u"",
1213
u"debug": u"False",
1214
u"priority":
1215
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1216
u"servicename": u"Mandos",
1217
u"use_dbus": u"True",
1218
u"use_ipv6": u"True",
1127
1219
}
1128
1220
1129
1221
# Parse config file for server-global settings
1130
server_config = ConfigParser.SafeConfigParser(server_defaults)
1222
server_config = configparser.SafeConfigParser(server_defaults)
1131
1223
del server_defaults
1132
server_config.read(os.path.join(options.configdir, "mandos.conf"))
1224
server_config.read(os.path.join(options.configdir,
1225
u"mandos.conf"))
1133
1226
# Convert the SafeConfigParser object to a dict
1134
1227
server_settings = server_config.defaults()
1135
1228
# Use the appropriate methods on the non-string config options
1136
server_settings["debug"] = server_config.getboolean("DEFAULT",
1137
"debug")
1138
server_settings["use_dbus"] = server_config.getboolean("DEFAULT",
1139
"use_dbus")
1140
server_settings["use_ipv6"] = server_config.getboolean("DEFAULT",
1141
"use_ipv6")
1229
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1230
server_settings[option] = server_config.getboolean(u"DEFAULT",
1231
option)
1142
1232
if server_settings["port"]:
1143
server_settings["port"] = server_config.getint("DEFAULT",
1144
"port")
1233
server_settings["port"] = server_config.getint(u"DEFAULT",
1234
u"port")
1145
1235
del server_config
1146
1236
1147
1237
# Override the settings from the config file with command line
1148
1238
# options, if set.
1149
for option in ("interface", "address", "port", "debug",
1150
"priority", "servicename", "configdir",
1151
"use_dbus", "use_ipv6"):
1239
for option in (u"interface", u"address", u"port", u"debug",
1240
u"priority", u"servicename", u"configdir",
1241
u"use_dbus", u"use_ipv6"):
1152
1242
value = getattr(options, option)
1153
1243
if value is not None:
1154
1244
server_settings[option] = value
1155
1245
del options
1246
# Force all strings to be unicode
1247
for option in server_settings.keys():
1248
if type(server_settings[option]) is str:
1249
server_settings[option] = unicode(server_settings[option])
1156
1250
# Now we have our good server settings in "server_settings"
1157
1251
1158
1252
##################################################################
1159
1253
1160
1254
# For convenience
1161
debug = server_settings["debug"]
1162
use_dbus = server_settings["use_dbus"]
1163
use_ipv6 = server_settings["use_ipv6"]
1255
debug = server_settings[u"debug"]
1256
use_dbus = server_settings[u"use_dbus"]
1257
use_ipv6 = server_settings[u"use_ipv6"]
1164
1258
1165
1259
if not debug:
1166
1260
syslogger.setLevel(logging.WARNING)
1167
1261
console.setLevel(logging.WARNING)
1168
1262
1169
if server_settings["servicename"] != "Mandos":
1263
if server_settings[u"servicename"] != u"Mandos":
1170
1264
syslogger.setFormatter(logging.Formatter
1171
('Mandos (%s) [%%(process)d]:'
1172
' %%(levelname)s: %%(message)s'
1173
% server_settings["servicename"]))
1265
(u'Mandos (%s) [%%(process)d]:'
1266
u' %%(levelname)s: %%(message)s'
1267
% server_settings[u"servicename"]))
1174
1268
1175
1269
# Parse config file with clients
1176
client_defaults = { "timeout": "1h",
1177
"interval": "5m",
1178
"checker": "fping -q -- %%(host)s",
1179
"host": "",
1270
client_defaults = { u"timeout": u"1h",
1271
u"interval": u"5m",
1272
u"checker": u"fping -q -- %%(host)s",
1273
u"host": u"",
1180
1274
}
1181
client_config = ConfigParser.SafeConfigParser(client_defaults)
1182
client_config.read(os.path.join(server_settings["configdir"],
1183
"clients.conf"))
1184
1275
client_config = configparser.SafeConfigParser(client_defaults)
1276
client_config.read(os.path.join(server_settings[u"configdir"],
1277
u"clients.conf"))
1278
1185
1279
global mandos_dbus_service
1186
1280
mandos_dbus_service = None
1187
1281
1188
clients = Set()
1189
tcp_server = IPv6_TCPServer((server_settings["address"],
1190
server_settings["port"]),
1191
TCP_handler,
1192
settings=server_settings,
1193
clients=clients, use_ipv6=use_ipv6)
1194
pidfilename = "/var/run/mandos.pid"
1282
tcp_server = MandosServer((server_settings[u"address"],
1283
server_settings[u"port"]),
1284
ClientHandler,
1285
interface=server_settings[u"interface"],
1286
use_ipv6=use_ipv6,
1287
gnutls_priority=
1288
server_settings[u"priority"],
1289
use_dbus=use_dbus)
1290
pidfilename = u"/var/run/mandos.pid"
1195
1291
try:
1196
pidfile = open(pidfilename, "w")
1292
pidfile = open(pidfilename, u"w")
1197
1293
except IOError:
1198
logger.error("Could not open file %r", pidfilename)
1294
logger.error(u"Could not open file %r", pidfilename)
1199
1295
1200
1296
try:
1201
uid = pwd.getpwnam("_mandos").pw_uid
1202
gid = pwd.getpwnam("_mandos").pw_gid
1297
uid = pwd.getpwnam(u"_mandos").pw_uid
1298
gid = pwd.getpwnam(u"_mandos").pw_gid
1203
1299
except KeyError:
1204
1300
try:
1205
uid = pwd.getpwnam("mandos").pw_uid
1206
gid = pwd.getpwnam("mandos").pw_gid
1301
uid = pwd.getpwnam(u"mandos").pw_uid
1302
gid = pwd.getpwnam(u"mandos").pw_gid
1207
1303
except KeyError:
1208
1304
try:
1209
uid = pwd.getpwnam("nobody").pw_uid
1210
gid = pwd.getpwnam("nogroup").pw_gid
1305
uid = pwd.getpwnam(u"nobody").pw_uid
1306
gid = pwd.getpwnam(u"nobody").pw_gid
1211
1307
except KeyError:
1212
1308
uid = 65534
1213
1309
gid = 65534
1226
1322
1227
1323
@gnutls.library.types.gnutls_log_func
1228
1324
def debug_gnutls(level, string):
1229
logger.debug("GnuTLS: %s", string[:-1])
1325
logger.debug(u"GnuTLS: %s", string[:-1])
1230
1326
1231
1327
(gnutls.library.functions
1232
1328
.gnutls_global_set_log_function(debug_gnutls))
1233
1329
1234
global service
1235
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1236
service = AvahiService(name = server_settings["servicename"],
1237
servicetype = "_mandos._tcp",
1238
protocol = protocol)
1239
if server_settings["interface"]:
1240
service.interface = (if_nametoindex
1241
(server_settings["interface"]))
1242
1243
1330
global main_loop
1244
global bus
1245
global server
1246
1331
# From the Avahi example code
1247
1332
DBusGMainLoop(set_as_default=True )
1248
1333
main_loop = gobject.MainLoop()
1249
1334
bus = dbus.SystemBus()
1250
server = dbus.Interface(bus.get_object(avahi.DBUS_NAME,
1251
avahi.DBUS_PATH_SERVER),
1252
avahi.DBUS_INTERFACE_SERVER)
1253
1335
# End of Avahi example code
1254
1336
if use_dbus:
1255
1337
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos", bus)
1338
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1339
service = AvahiService(name = server_settings[u"servicename"],
1340
servicetype = u"_mandos._tcp",
1341
protocol = protocol, bus = bus)
1342
if server_settings["interface"]:
1343
service.interface = (if_nametoindex
1344
(str(server_settings[u"interface"])))
1256
1345
1257
1346
client_class = Client
1258
1347
if use_dbus:
1259
client_class = ClientDBus
1260
clients.update(Set(
1348
client_class = functools.partial(ClientDBus, bus = bus)
1349
tcp_server.clients.update(set(
1261
1350
client_class(name = section,
1262
1351
config= dict(client_config.items(section)))
1263
1352
for section in client_config.sections()))
1264
if not clients:
1353
if not tcp_server.clients:
1265
1354
logger.warning(u"No clients defined")
1266
1355
1267
1356
if debug:
1291
1380
1292
1381
def cleanup():
1293
1382
"Cleanup function; run on exit"
1294
global group
1295
# From the Avahi example code
1296
if not group is None:
1297
group.Free()
1298
group = None
1299
# End of Avahi example code
1383
service.cleanup()
1300
1384
1301
while clients:
1302
client = clients.pop()
1385
while tcp_server.clients:
1386
client = tcp_server.clients.pop()
1303
1387
client.disable_hook = None
1304
1388
client.disable()
1305
1389
1314
1398
class MandosDBusService(dbus.service.Object):
1315
1399
"""A D-Bus proxy object"""
1316
1400
def __init__(self):
1317
dbus.service.Object.__init__(self, bus, "/")
1401
dbus.service.Object.__init__(self, bus, u"/")
1318
1402
_interface = u"se.bsnet.fukt.Mandos"
1319
1403
1320
@dbus.service.signal(_interface, signature="oa{sv}")
1404
@dbus.service.signal(_interface, signature=u"oa{sv}")
1321
1405
def ClientAdded(self, objpath, properties):
1322
1406
"D-Bus signal"
1323
1407
pass
1324
1408
1325
@dbus.service.signal(_interface, signature="s")
1409
@dbus.service.signal(_interface, signature=u"s")
1326
1410
def ClientNotFound(self, fingerprint):
1327
1411
"D-Bus signal"
1328
1412
pass
1329
1413
1330
@dbus.service.signal(_interface, signature="os")
1414
@dbus.service.signal(_interface, signature=u"os")
1331
1415
def ClientRemoved(self, objpath, name):
1332
1416
"D-Bus signal"
1333
1417
pass
1334
1418
1335
@dbus.service.method(_interface, out_signature="ao")
1419
@dbus.service.method(_interface, out_signature=u"ao")
1336
1420
def GetAllClients(self):
1337
1421
"D-Bus method"
1338
return dbus.Array(c.dbus_object_path for c in clients)
1422
return dbus.Array(c.dbus_object_path
1423
for c in tcp_server.clients)
1339
1424
1340
@dbus.service.method(_interface, out_signature="a{oa{sv}}")
1425
@dbus.service.method(_interface,
1426
out_signature=u"a{oa{sv}}")
1341
1427
def GetAllClientsWithProperties(self):
1342
1428
"D-Bus method"
1343
1429
return dbus.Dictionary(
1344
1430
((c.dbus_object_path, c.GetAllProperties())
1345
for c in clients),
1346
signature="oa{sv}")
1431
for c in tcp_server.clients),
1432
signature=u"oa{sv}")
1347
1433
1348
@dbus.service.method(_interface, in_signature="o")
1434
@dbus.service.method(_interface, in_signature=u"o")
1349
1435
def RemoveClient(self, object_path):
1350
1436
"D-Bus method"
1351
for c in clients:
1437
for c in tcp_server.clients:
1352
1438
if c.dbus_object_path == object_path:
1353
clients.remove(c)
1439
tcp_server.clients.remove(c)
1354
1440
c.remove_from_connection()
1355
1441
# Don't signal anything except ClientRemoved
1356
1442
c.disable(signal=False)
1363
1449
1364
1450
mandos_dbus_service = MandosDBusService()
1365
1451
1366
for client in clients:
1452
for client in tcp_server.clients:
1367
1453
if use_dbus:
1368
1454
# Emit D-Bus signal
1369
1455
mandos_dbus_service.ClientAdded(client.dbus_object_path,
1387
1473
1388
1474
try:
1389
1475
# From the Avahi example code
1390
server.connect_to_signal("StateChanged", server_state_changed)
1391
1476
try:
1392
server_state_changed(server.GetState())
1477
service.activate()
1393
1478
except dbus.exceptions.DBusException, error:
1394
1479
logger.critical(u"DBusException: %s", error)
1395
1480
sys.exit(1)
1408
1493
except KeyboardInterrupt:
1409
1494
if debug:
1410
1495
print >> sys.stderr
1411
logger.debug("Server received KeyboardInterrupt")
1412
logger.debug("Server exiting")
1496
logger.debug(u"Server received KeyboardInterrupt")
1497
logger.debug(u"Server exiting")
1413
1498
1414
1499
if __name__ == '__main__':
1415
1500
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0