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- Committer: Björn Påhlsson
- Date: 2011-11-09 17:16:03 UTC
- mfrom: (518.1.1 mandos-persistent)
- Revision ID: belorn@fukt.bsnet.se-20111109171603-srz21uoclpldp5ve
merge persistent state
- files removed:
- debian/mandos-client.examples
- debian/upstream
- network-hooks.d
- files modified:
- .bzrignore
added
removed
mandos
1
#!/usr/bin/python2.7
1
#!/usr/bin/python
2
2
# -*- mode: python; coding: utf-8 -*-
3
3
#
4
4
# Mandos server - give out binary blobs to connecting clients.
11
11
# "AvahiService" class, and some lines in "main".
12
12
#
13
13
# Everything else is
14
# Copyright © 2008-2014 Teddy Hogeborn
15
# Copyright © 2008-2014 Björn Påhlsson
14
# Copyright © 2008-2011 Teddy Hogeborn
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# Copyright © 2008-2011 Björn Påhlsson
16
16
#
17
17
# This program is free software: you can redistribute it and/or modify
18
18
# it under the terms of the GNU General Public License as published by
34
34
from __future__ import (division, absolute_import, print_function,
35
35
unicode_literals)
36
36
37
from future_builtins import *
38
39
37
import SocketServer as socketserver
40
38
import socket
41
39
import argparse
65
63
import cPickle as pickle
66
64
import multiprocessing
67
65
import types
68
import binascii
69
import tempfile
70
import itertools
71
import collections
66
import hashlib
72
67
73
68
import dbus
74
69
import dbus.service
79
74
import ctypes.util
80
75
import xml.dom.minidom
81
76
import inspect
77
import Crypto.Cipher.AES
82
78
83
79
try:
84
80
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
88
84
except ImportError:
89
85
SO_BINDTODEVICE = None
90
86
91
version = "1.6.8"
92
stored_state_file = "clients.pickle"
87
88
version = "1.4.1"
93
89
94
90
logger = logging.getLogger()
95
syslogger = None
96
97
try:
98
if_nametoindex = (ctypes.cdll.LoadLibrary
99
(ctypes.util.find_library("c"))
100
.if_nametoindex)
101
except (OSError, AttributeError):
102
def if_nametoindex(interface):
103
"Get an interface index the hard way, i.e. using fcntl()"
104
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
105
with contextlib.closing(socket.socket()) as s:
106
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
107
struct.pack(b"16s16x", interface))
108
interface_index = struct.unpack("I", ifreq[16:20])[0]
109
return interface_index
110
111
112
def initlogger(debug, level=logging.WARNING):
113
"""init logger and add loglevel"""
114
115
global syslogger
116
syslogger = (logging.handlers.SysLogHandler
117
(facility =
118
logging.handlers.SysLogHandler.LOG_DAEMON,
119
address = "/dev/log"))
120
syslogger.setFormatter(logging.Formatter
121
('Mandos [%(process)d]: %(levelname)s:'
122
' %(message)s'))
123
logger.addHandler(syslogger)
124
125
if debug:
126
console = logging.StreamHandler()
127
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
128
' [%(process)d]:'
129
' %(levelname)s:'
130
' %(message)s'))
131
logger.addHandler(console)
132
logger.setLevel(level)
133
134
135
class PGPError(Exception):
136
"""Exception if encryption/decryption fails"""
137
pass
138
139
140
class PGPEngine(object):
141
"""A simple class for OpenPGP symmetric encryption & decryption"""
142
def __init__(self):
143
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
144
self.gnupgargs = ['--batch',
145
'--home', self.tempdir,
146
'--force-mdc',
147
'--quiet',
148
'--no-use-agent']
149
150
def __enter__(self):
151
return self
152
153
def __exit__(self, exc_type, exc_value, traceback):
154
self._cleanup()
155
return False
156
157
def __del__(self):
158
self._cleanup()
159
160
def _cleanup(self):
161
if self.tempdir is not None:
162
# Delete contents of tempdir
163
for root, dirs, files in os.walk(self.tempdir,
164
topdown = False):
165
for filename in files:
166
os.remove(os.path.join(root, filename))
167
for dirname in dirs:
168
os.rmdir(os.path.join(root, dirname))
169
# Remove tempdir
170
os.rmdir(self.tempdir)
171
self.tempdir = None
172
173
def password_encode(self, password):
174
# Passphrase can not be empty and can not contain newlines or
175
# NUL bytes. So we prefix it and hex encode it.
176
encoded = b"mandos" + binascii.hexlify(password)
177
if len(encoded) > 2048:
178
# GnuPG can't handle long passwords, so encode differently
179
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
180
.replace(b"\n", b"\\n")
181
.replace(b"\0", b"\\x00"))
182
return encoded
183
184
def encrypt(self, data, password):
185
passphrase = self.password_encode(password)
186
with tempfile.NamedTemporaryFile(dir=self.tempdir
187
) as passfile:
188
passfile.write(passphrase)
189
passfile.flush()
190
proc = subprocess.Popen(['gpg', '--symmetric',
191
'--passphrase-file',
192
passfile.name]
193
+ self.gnupgargs,
194
stdin = subprocess.PIPE,
195
stdout = subprocess.PIPE,
196
stderr = subprocess.PIPE)
197
ciphertext, err = proc.communicate(input = data)
198
if proc.returncode != 0:
199
raise PGPError(err)
200
return ciphertext
201
202
def decrypt(self, data, password):
203
passphrase = self.password_encode(password)
204
with tempfile.NamedTemporaryFile(dir = self.tempdir
205
) as passfile:
206
passfile.write(passphrase)
207
passfile.flush()
208
proc = subprocess.Popen(['gpg', '--decrypt',
209
'--passphrase-file',
210
passfile.name]
211
+ self.gnupgargs,
212
stdin = subprocess.PIPE,
213
stdout = subprocess.PIPE,
214
stderr = subprocess.PIPE)
215
decrypted_plaintext, err = proc.communicate(input
216
= data)
217
if proc.returncode != 0:
218
raise PGPError(err)
219
return decrypted_plaintext
91
stored_state_path = "/var/lib/mandos/clients.pickle"
92
93
syslogger = (logging.handlers.SysLogHandler
94
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
95
address = str("/dev/log")))
96
syslogger.setFormatter(logging.Formatter
97
('Mandos [%(process)d]: %(levelname)s:'
98
' %(message)s'))
99
logger.addHandler(syslogger)
100
101
console = logging.StreamHandler()
102
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
103
' [%(process)d]:'
104
' %(levelname)s:'
105
' %(message)s'))
106
logger.addHandler(console)
220
107
221
108
222
109
class AvahiError(Exception):
223
110
def __init__(self, value, *args, **kwargs):
224
111
self.value = value
225
return super(AvahiError, self).__init__(value, *args,
226
**kwargs)
112
super(AvahiError, self).__init__(value, *args, **kwargs)
113
def __unicode__(self):
114
return unicode(repr(self.value))
227
115
228
116
class AvahiServiceError(AvahiError):
229
117
pass
240
128
Used to optionally bind to the specified interface.
241
129
name: string; Example: 'Mandos'
242
130
type: string; Example: '_mandos._tcp'.
243
See <https://www.iana.org/assignments/service-names-port-numbers>
131
See <http://www.dns-sd.org/ServiceTypes.html>
244
132
port: integer; what port to announce
245
133
TXT: list of strings; TXT record for the service
246
134
domain: string; Domain to publish on, default to .local if empty.
252
140
server: D-Bus Server
253
141
bus: dbus.SystemBus()
254
142
"""
255
256
143
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
257
144
servicetype = None, port = None, TXT = None,
258
145
domain = "", host = "", max_renames = 32768,
271
158
self.server = None
272
159
self.bus = bus
273
160
self.entry_group_state_changed_match = None
274
275
161
def rename(self):
276
162
"""Derived from the Avahi example code"""
277
163
if self.rename_count >= self.max_renames:
287
173
try:
288
174
self.add()
289
175
except dbus.exceptions.DBusException as error:
290
logger.critical("D-Bus Exception", exc_info=error)
176
logger.critical("DBusException: %s", error)
291
177
self.cleanup()
292
178
os._exit(1)
293
179
self.rename_count += 1
294
295
180
def remove(self):
296
181
"""Derived from the Avahi example code"""
297
182
if self.entry_group_state_changed_match is not None:
299
184
self.entry_group_state_changed_match = None
300
185
if self.group is not None:
301
186
self.group.Reset()
302
303
187
def add(self):
304
188
"""Derived from the Avahi example code"""
305
189
self.remove()
322
206
dbus.UInt16(self.port),
323
207
avahi.string_array_to_txt_array(self.TXT))
324
208
self.group.Commit()
325
326
209
def entry_group_state_changed(self, state, error):
327
210
"""Derived from the Avahi example code"""
328
211
logger.debug("Avahi entry group state change: %i", state)
335
218
elif state == avahi.ENTRY_GROUP_FAILURE:
336
219
logger.critical("Avahi: Error in group state changed %s",
337
220
unicode(error))
338
raise AvahiGroupError("State changed: {!s}"
339
.format(error))
340
221
raise AvahiGroupError("State changed: %s"
222
% unicode(error))
341
223
def cleanup(self):
342
224
"""Derived from the Avahi example code"""
343
225
if self.group is not None:
344
226
try:
345
227
self.group.Free()
346
228
except (dbus.exceptions.UnknownMethodException,
347
dbus.exceptions.DBusException):
229
dbus.exceptions.DBusException) as e:
348
230
pass
349
231
self.group = None
350
232
self.remove()
351
352
233
def server_state_changed(self, state, error=None):
353
234
"""Derived from the Avahi example code"""
354
235
logger.debug("Avahi server state change: %i", state)
373
254
logger.debug("Unknown state: %r", state)
374
255
else:
375
256
logger.debug("Unknown state: %r: %r", state, error)
376
377
257
def activate(self):
378
258
"""Derived from the Avahi example code"""
379
259
if self.server is None:
386
266
self.server_state_changed)
387
267
self.server_state_changed(self.server.GetState())
388
268
389
390
269
class AvahiServiceToSyslog(AvahiService):
391
270
def rename(self):
392
271
"""Add the new name to the syslog messages"""
393
272
ret = AvahiService.rename(self)
394
273
syslogger.setFormatter(logging.Formatter
395
('Mandos ({}) [%(process)d]:'
396
' %(levelname)s: %(message)s'
397
.format(self.name)))
274
('Mandos (%s) [%%(process)d]:'
275
' %%(levelname)s: %%(message)s'
276
% self.name))
398
277
return ret
399
278
400
279
def _timedelta_to_milliseconds(td):
280
"Convert a datetime.timedelta() to milliseconds"
281
return ((td.days * 24 * 60 * 60 * 1000)
282
+ (td.seconds * 1000)
283
+ (td.microseconds // 1000))
284
401
285
class Client(object):
402
286
"""A representation of a client host served by this server.
403
287
404
288
Attributes:
405
approved: bool(); 'None' if not yet approved/disapproved
289
_approved: bool(); 'None' if not yet approved/disapproved
406
290
approval_delay: datetime.timedelta(); Time to wait for approval
407
291
approval_duration: datetime.timedelta(); Duration of one approval
408
292
checker: subprocess.Popen(); a running checker process used
426
310
interval: datetime.timedelta(); How often to start a new checker
427
311
last_approval_request: datetime.datetime(); (UTC) or None
428
312
last_checked_ok: datetime.datetime(); (UTC) or None
429
last_checker_status: integer between 0 and 255 reflecting exit
430
status of last checker. -1 reflects crashed
431
checker, -2 means no checker completed yet.
432
last_enabled: datetime.datetime(); (UTC) or None
313
last_checker_status: integer between 0 and 255 reflecting exit status
314
of last checker. -1 reflect crashed checker,
315
or None.
316
last_enabled: datetime.datetime(); (UTC)
433
317
name: string; from the config file, used in log messages and
434
318
D-Bus identifiers
435
319
secret: bytestring; sent verbatim (over TLS) to client
436
320
timeout: datetime.timedelta(); How long from last_checked_ok
437
321
until this client is disabled
438
extended_timeout: extra long timeout when secret has been sent
322
extended_timeout: extra long timeout when password has been sent
439
323
runtime_expansions: Allowed attributes for runtime expansion.
440
324
expires: datetime.datetime(); time (UTC) when a client will be
441
325
disabled, or None
442
server_settings: The server_settings dict from main()
443
326
"""
444
327
445
328
runtime_expansions = ("approval_delay", "approval_duration",
446
"created", "enabled", "expires",
447
"fingerprint", "host", "interval",
448
"last_approval_request", "last_checked_ok",
329
"created", "enabled", "fingerprint",
330
"host", "interval", "last_checked_ok",
449
331
"last_enabled", "name", "timeout")
450
client_defaults = { "timeout": "PT5M",
451
"extended_timeout": "PT15M",
452
"interval": "PT2M",
453
"checker": "fping -q -- %%(host)s",
454
"host": "",
455
"approval_delay": "PT0S",
456
"approval_duration": "PT1S",
457
"approved_by_default": "True",
458
"enabled": "True",
459
}
460
461
@staticmethod
462
def config_parser(config):
463
"""Construct a new dict of client settings of this form:
464
{ client_name: {setting_name: value, ...}, ...}
465
with exceptions for any special settings as defined above.
466
NOTE: Must be a pure function. Must return the same result
467
value given the same arguments.
468
"""
469
settings = {}
470
for client_name in config.sections():
471
section = dict(config.items(client_name))
472
client = settings[client_name] = {}
473
474
client["host"] = section["host"]
475
# Reformat values from string types to Python types
476
client["approved_by_default"] = config.getboolean(
477
client_name, "approved_by_default")
478
client["enabled"] = config.getboolean(client_name,
479
"enabled")
480
481
client["fingerprint"] = (section["fingerprint"].upper()
482
.replace(" ", ""))
483
if "secret" in section:
484
client["secret"] = section["secret"].decode("base64")
485
elif "secfile" in section:
486
with open(os.path.expanduser(os.path.expandvars
487
(section["secfile"])),
488
"rb") as secfile:
489
client["secret"] = secfile.read()
490
else:
491
raise TypeError("No secret or secfile for section {}"
492
.format(section))
493
client["timeout"] = string_to_delta(section["timeout"])
494
client["extended_timeout"] = string_to_delta(
495
section["extended_timeout"])
496
client["interval"] = string_to_delta(section["interval"])
497
client["approval_delay"] = string_to_delta(
498
section["approval_delay"])
499
client["approval_duration"] = string_to_delta(
500
section["approval_duration"])
501
client["checker_command"] = section["checker"]
502
client["last_approval_request"] = None
503
client["last_checked_ok"] = None
504
client["last_checker_status"] = -2
505
506
return settings
507
508
def __init__(self, settings, name = None, server_settings=None):
332
333
def timeout_milliseconds(self):
334
"Return the 'timeout' attribute in milliseconds"
335
return _timedelta_to_milliseconds(self.timeout)
336
337
def extended_timeout_milliseconds(self):
338
"Return the 'extended_timeout' attribute in milliseconds"
339
return _timedelta_to_milliseconds(self.extended_timeout)
340
341
def interval_milliseconds(self):
342
"Return the 'interval' attribute in milliseconds"
343
return _timedelta_to_milliseconds(self.interval)
344
345
def approval_delay_milliseconds(self):
346
return _timedelta_to_milliseconds(self.approval_delay)
347
348
def __init__(self, name = None, config=None):
349
"""Note: the 'checker' key in 'config' sets the
350
'checker_command' attribute and *not* the 'checker'
351
attribute."""
509
352
self.name = name
510
if server_settings is None:
511
server_settings = {}
512
self.server_settings = server_settings
513
# adding all client settings
514
for setting, value in settings.items():
515
setattr(self, setting, value)
516
517
if self.enabled:
518
if not hasattr(self, "last_enabled"):
519
self.last_enabled = datetime.datetime.utcnow()
520
if not hasattr(self, "expires"):
521
self.expires = (datetime.datetime.utcnow()
522
+ self.timeout)
523
else:
524
self.last_enabled = None
525
self.expires = None
526
353
if config is None:
354
config = {}
527
355
logger.debug("Creating client %r", self.name)
528
356
# Uppercase and remove spaces from fingerprint for later
529
357
# comparison purposes with return value from the fingerprint()
530
358
# function
359
self.fingerprint = (config["fingerprint"].upper()
360
.replace(" ", ""))
531
361
logger.debug(" Fingerprint: %s", self.fingerprint)
532
self.created = settings.get("created",
533
datetime.datetime.utcnow())
534
535
# attributes specific for this server instance
362
if "secret" in config:
363
self.secret = config["secret"].decode("base64")
364
elif "secfile" in config:
365
with open(os.path.expanduser(os.path.expandvars
366
(config["secfile"])),
367
"rb") as secfile:
368
self.secret = secfile.read()
369
else:
370
raise TypeError("No secret or secfile for client %s"
371
% self.name)
372
self.host = config.get("host", "")
373
self.created = datetime.datetime.utcnow()
374
self.enabled = True
375
self.last_approval_request = None
376
self.last_enabled = datetime.datetime.utcnow()
377
self.last_checked_ok = None
378
self.last_checker_status = None
379
self.timeout = string_to_delta(config["timeout"])
380
self.extended_timeout = string_to_delta(config
381
["extended_timeout"])
382
self.interval = string_to_delta(config["interval"])
536
383
self.checker = None
537
384
self.checker_initiator_tag = None
538
385
self.disable_initiator_tag = None
386
self.expires = datetime.datetime.utcnow() + self.timeout
539
387
self.checker_callback_tag = None
388
self.checker_command = config["checker"]
540
389
self.current_checker_command = None
541
self.approved = None
390
self._approved = None
391
self.approved_by_default = config.get("approved_by_default",
392
True)
542
393
self.approvals_pending = 0
394
self.approval_delay = string_to_delta(
395
config["approval_delay"])
396
self.approval_duration = string_to_delta(
397
config["approval_duration"])
543
398
self.changedstate = (multiprocessing_manager
544
399
.Condition(multiprocessing_manager
545
400
.Lock()))
546
self.client_structure = [attr for attr in
547
self.__dict__.iterkeys()
548
if not attr.startswith("_")]
401
self.client_structure = [attr for attr in self.__dict__.iterkeys() if not attr.startswith("_")]
549
402
self.client_structure.append("client_structure")
550
403
404
551
405
for name, t in inspect.getmembers(type(self),
552
lambda obj:
553
isinstance(obj,
554
property)):
406
lambda obj: isinstance(obj, property)):
555
407
if not name.startswith("_"):
556
408
self.client_structure.append(name)
557
409
565
417
if getattr(self, "enabled", False):
566
418
# Already enabled
567
419
return
420
self.send_changedstate()
568
421
self.expires = datetime.datetime.utcnow() + self.timeout
569
422
self.enabled = True
570
423
self.last_enabled = datetime.datetime.utcnow()
571
424
self.init_checker()
572
self.send_changedstate()
573
425
574
426
def disable(self, quiet=True):
575
427
"""Disable this client."""
576
428
if not getattr(self, "enabled", False):
577
429
return False
578
430
if not quiet:
431
self.send_changedstate()
432
if not quiet:
579
433
logger.info("Disabling client %s", self.name)
580
if getattr(self, "disable_initiator_tag", None) is not None:
434
if getattr(self, "disable_initiator_tag", False):
581
435
gobject.source_remove(self.disable_initiator_tag)
582
436
self.disable_initiator_tag = None
583
437
self.expires = None
584
if getattr(self, "checker_initiator_tag", None) is not None:
438
if getattr(self, "checker_initiator_tag", False):
585
439
gobject.source_remove(self.checker_initiator_tag)
586
440
self.checker_initiator_tag = None
587
441
self.stop_checker()
588
442
self.enabled = False
589
if not quiet:
590
self.send_changedstate()
591
443
# Do not run this again if called by a gobject.timeout_add
592
444
return False
593
445
594
446
def __del__(self):
595
447
self.disable()
596
448
597
449
def init_checker(self):
598
450
# Schedule a new checker to be started an 'interval' from now,
599
451
# and every interval from then on.
600
if self.checker_initiator_tag is not None:
601
gobject.source_remove(self.checker_initiator_tag)
602
452
self.checker_initiator_tag = (gobject.timeout_add
603
(int(self.interval
604
.total_seconds() * 1000),
453
(self.interval_milliseconds(),
605
454
self.start_checker))
606
455
# Schedule a disable() when 'timeout' has passed
607
if self.disable_initiator_tag is not None:
608
gobject.source_remove(self.disable_initiator_tag)
609
456
self.disable_initiator_tag = (gobject.timeout_add
610
(int(self.timeout
611
.total_seconds() * 1000),
612
self.disable))
457
(self.timeout_milliseconds(),
458
self.disable))
613
459
# Also start a new checker *right now*.
614
460
self.start_checker()
615
461
462
616
463
def checker_callback(self, pid, condition, command):
617
464
"""The checker has completed, so take appropriate actions."""
618
465
self.checker_callback_tag = None
619
466
self.checker = None
620
467
if os.WIFEXITED(condition):
621
self.last_checker_status = os.WEXITSTATUS(condition)
468
self.last_checker_status = os.WEXITSTATUS(condition)
622
469
if self.last_checker_status == 0:
623
470
logger.info("Checker for %(name)s succeeded",
624
471
vars(self))
631
478
logger.warning("Checker for %(name)s crashed?",
632
479
vars(self))
633
480
634
def checked_ok(self):
635
"""Assert that the client has been seen, alive and well."""
636
self.last_checked_ok = datetime.datetime.utcnow()
637
self.last_checker_status = 0
638
self.bump_timeout()
639
640
def bump_timeout(self, timeout=None):
641
"""Bump up the timeout for this client."""
481
def checked_ok(self, timeout=None):
482
"""Bump up the timeout for this client.
483
484
This should only be called when the client has been seen,
485
alive and well.
486
"""
642
487
if timeout is None:
643
488
timeout = self.timeout
489
self.last_checked_ok = datetime.datetime.utcnow()
644
490
if self.disable_initiator_tag is not None:
645
491
gobject.source_remove(self.disable_initiator_tag)
646
self.disable_initiator_tag = None
647
492
if getattr(self, "enabled", False):
648
493
self.disable_initiator_tag = (gobject.timeout_add
649
(int(timeout.total_seconds()
650
* 1000), self.disable))
494
(_timedelta_to_milliseconds
495
(timeout), self.disable))
651
496
self.expires = datetime.datetime.utcnow() + timeout
652
497
653
498
def need_approval(self):
659
504
If a checker already exists, leave it running and do
660
505
nothing."""
661
506
# The reason for not killing a running checker is that if we
662
# did that, and if a checker (for some reason) started running
663
# slowly and taking more than 'interval' time, then the client
664
# would inevitably timeout, since no checker would get a
665
# chance to run to completion. If we instead leave running
507
# did that, then if a checker (for some reason) started
508
# running slowly and taking more than 'interval' time, the
509
# client would inevitably timeout, since no checker would get
510
# a chance to run to completion. If we instead leave running
666
511
# checkers alone, the checker would have to take more time
667
512
# than 'timeout' for the client to be disabled, which is as it
668
513
# should be.
670
515
# If a checker exists, make sure it is not a zombie
671
516
try:
672
517
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
673
except AttributeError:
674
pass
675
except OSError as error:
676
if error.errno != errno.ECHILD:
677
raise
518
except (AttributeError, OSError) as error:
519
if (isinstance(error, OSError)
520
and error.errno != errno.ECHILD):
521
raise error
678
522
else:
679
523
if pid:
680
524
logger.warning("Checker was a zombie")
683
527
self.current_checker_command)
684
528
# Start a new checker if needed
685
529
if self.checker is None:
686
# Escape attributes for the shell
687
escaped_attrs = { attr:
688
re.escape(unicode(getattr(self,
689
attr)))
690
for attr in self.runtime_expansions }
691
530
try:
692
command = self.checker_command % escaped_attrs
693
except TypeError as error:
694
logger.error('Could not format string "%s"',
695
self.checker_command, exc_info=error)
696
return True # Try again later
531
# In case checker_command has exactly one % operator
532
command = self.checker_command % self.host
533
except TypeError:
534
# Escape attributes for the shell
535
escaped_attrs = dict(
536
(attr,
537
re.escape(unicode(str(getattr(self, attr, "")),
538
errors=
539
'replace')))
540
for attr in
541
self.runtime_expansions)
542
543
try:
544
command = self.checker_command % escaped_attrs
545
except TypeError as error:
546
logger.error('Could not format string "%s":'
547
' %s', self.checker_command, error)
548
return True # Try again later
697
549
self.current_checker_command = command
698
550
try:
699
551
logger.info("Starting checker %r for %s",
702
554
# in normal mode, that is already done by daemon(),
703
555
# and in debug mode we don't want to. (Stdin is
704
556
# always replaced by /dev/null.)
705
# The exception is when not debugging but nevertheless
706
# running in the foreground; use the previously
707
# created wnull.
708
popen_args = {}
709
if (not self.server_settings["debug"]
710
and self.server_settings["foreground"]):
711
popen_args.update({"stdout": wnull,
712
"stderr": wnull })
713
557
self.checker = subprocess.Popen(command,
714
558
close_fds=True,
715
shell=True, cwd="/",
716
**popen_args)
717
except OSError as error:
718
logger.error("Failed to start subprocess",
719
exc_info=error)
720
return True
721
self.checker_callback_tag = (gobject.child_watch_add
722
(self.checker.pid,
723
self.checker_callback,
724
data=command))
725
# The checker may have completed before the gobject
726
# watch was added. Check for this.
727
try:
559
shell=True, cwd="/")
560
self.checker_callback_tag = (gobject.child_watch_add
561
(self.checker.pid,
562
self.checker_callback,
563
data=command))
564
# The checker may have completed before the gobject
565
# watch was added. Check for this.
728
566
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
567
if pid:
568
gobject.source_remove(self.checker_callback_tag)
569
self.checker_callback(pid, status, command)
729
570
except OSError as error:
730
if error.errno == errno.ECHILD:
731
# This should never happen
732
logger.error("Child process vanished",
733
exc_info=error)
734
return True
735
raise
736
if pid:
737
gobject.source_remove(self.checker_callback_tag)
738
self.checker_callback(pid, status, command)
571
logger.error("Failed to start subprocess: %s",
572
error)
739
573
# Re-run this periodically if run by gobject.timeout_add
740
574
return True
741
575
748
582
return
749
583
logger.debug("Stopping checker for %(name)s", vars(self))
750
584
try:
751
self.checker.terminate()
585
os.kill(self.checker.pid, signal.SIGTERM)
752
586
#time.sleep(0.5)
753
587
#if self.checker.poll() is None:
754
# self.checker.kill()
588
# os.kill(self.checker.pid, signal.SIGKILL)
755
589
except OSError as error:
756
590
if error.errno != errno.ESRCH: # No such process
757
591
raise
758
592
self.checker = None
759
593
594
# Encrypts a client secret and stores it in a varible encrypted_secret
595
def encrypt_secret(self, key):
596
# Encryption-key need to be of a specific size, so we hash inputed key
597
hasheng = hashlib.sha256()
598
hasheng.update(key)
599
encryptionkey = hasheng.digest()
600
601
# Create validation hash so we know at decryption if it was sucessful
602
hasheng = hashlib.sha256()
603
hasheng.update(self.secret)
604
validationhash = hasheng.digest()
605
606
# Encrypt secret
607
iv = os.urandom(Crypto.Cipher.AES.block_size)
608
ciphereng = Crypto.Cipher.AES.new(encryptionkey,
609
Crypto.Cipher.AES.MODE_CFB, iv)
610
ciphertext = ciphereng.encrypt(validationhash+self.secret)
611
self.encrypted_secret = (ciphertext, iv)
612
613
# Decrypt a encrypted client secret
614
def decrypt_secret(self, key):
615
# Decryption-key need to be of a specific size, so we hash inputed key
616
hasheng = hashlib.sha256()
617
hasheng.update(key)
618
encryptionkey = hasheng.digest()
619
620
# Decrypt encrypted secret
621
ciphertext, iv = self.encrypted_secret
622
ciphereng = Crypto.Cipher.AES.new(encryptionkey,
623
Crypto.Cipher.AES.MODE_CFB, iv)
624
plain = ciphereng.decrypt(ciphertext)
625
626
# Validate decrypted secret to know if it was succesful
627
hasheng = hashlib.sha256()
628
validationhash = plain[:hasheng.digest_size]
629
secret = plain[hasheng.digest_size:]
630
hasheng.update(secret)
631
632
# if validation fails, we use key as new secret. Otherwhise, we use
633
# the decrypted secret
634
if hasheng.digest() == validationhash:
635
self.secret = secret
636
else:
637
self.secret = key
638
del self.encrypted_secret
639
760
640
761
641
def dbus_service_property(dbus_interface, signature="v",
762
642
access="readwrite", byte_arrays=False):
774
654
# "Set" method, so we fail early here:
775
655
if byte_arrays and signature != "ay":
776
656
raise ValueError("Byte arrays not supported for non-'ay'"
777
" signature {!r}".format(signature))
657
" signature %r" % signature)
778
658
def decorator(func):
779
659
func._dbus_is_property = True
780
660
func._dbus_interface = dbus_interface
788
668
return decorator
789
669
790
670
791
def dbus_interface_annotations(dbus_interface):
792
"""Decorator for marking functions returning interface annotations
793
794
Usage:
795
796
@dbus_interface_annotations("org.example.Interface")
797
def _foo(self): # Function name does not matter
798
return {"org.freedesktop.DBus.Deprecated": "true",
799
"org.freedesktop.DBus.Property.EmitsChangedSignal":
800
"false"}
801
"""
802
def decorator(func):
803
func._dbus_is_interface = True
804
func._dbus_interface = dbus_interface
805
func._dbus_name = dbus_interface
806
return func
807
return decorator
808
809
810
def dbus_annotations(annotations):
811
"""Decorator to annotate D-Bus methods, signals or properties
812
Usage:
813
814
@dbus_service_property("org.example.Interface", signature="b",
815
access="r")
816
@dbus_annotations({{"org.freedesktop.DBus.Deprecated": "true",
817
"org.freedesktop.DBus.Property."
818
"EmitsChangedSignal": "false"})
819
def Property_dbus_property(self):
820
return dbus.Boolean(False)
821
"""
822
def decorator(func):
823
func._dbus_annotations = annotations
824
return func
825
return decorator
826
827
828
671
class DBusPropertyException(dbus.exceptions.DBusException):
829
672
"""A base class for D-Bus property-related exceptions
830
673
"""
831
pass
674
def __unicode__(self):
675
return unicode(str(self))
676
832
677
833
678
class DBusPropertyAccessException(DBusPropertyException):
834
679
"""A property's access permissions disallows an operation.
851
696
"""
852
697
853
698
@staticmethod
854
def _is_dbus_thing(thing):
855
"""Returns a function testing if an attribute is a D-Bus thing
856
857
If called like _is_dbus_thing("method") it returns a function
858
suitable for use as predicate to inspect.getmembers().
859
"""
860
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
861
False)
699
def _is_dbus_property(obj):
700
return getattr(obj, "_dbus_is_property", False)
862
701
863
def _get_all_dbus_things(self, thing):
702
def _get_all_dbus_properties(self):
864
703
"""Returns a generator of (name, attribute) pairs
865
704
"""
866
return ((getattr(athing.__get__(self), "_dbus_name",
867
name),
868
athing.__get__(self))
705
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
869
706
for cls in self.__class__.__mro__
870
for name, athing in
871
inspect.getmembers(cls,
872
self._is_dbus_thing(thing)))
707
for name, prop in
708
inspect.getmembers(cls, self._is_dbus_property))
873
709
874
710
def _get_dbus_property(self, interface_name, property_name):
875
711
"""Returns a bound method if one exists which is a D-Bus
877
713
"""
878
714
for cls in self.__class__.__mro__:
879
715
for name, value in (inspect.getmembers
880
(cls,
881
self._is_dbus_thing("property"))):
716
(cls, self._is_dbus_property)):
882
717
if (value._dbus_name == property_name
883
718
and value._dbus_interface == interface_name):
884
719
return value.__get__(self)
912
747
# The byte_arrays option is not supported yet on
913
748
# signatures other than "ay".
914
749
if prop._dbus_signature != "ay":
915
raise ValueError("Byte arrays not supported for non-"
916
"'ay' signature {!r}"
917
.format(prop._dbus_signature))
918
value = dbus.ByteArray(b''.join(chr(byte)
919
for byte in value))
750
raise ValueError
751
value = dbus.ByteArray(''.join(unichr(byte)
752
for byte in value))
920
753
prop(value)
921
754
922
755
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
927
760
928
761
Note: Will not include properties with access="write".
929
762
"""
930
properties = {}
931
for name, prop in self._get_all_dbus_things("property"):
763
all = {}
764
for name, prop in self._get_all_dbus_properties():
932
765
if (interface_name
933
766
and interface_name != prop._dbus_interface):
934
767
# Interface non-empty but did not match
938
771
continue
939
772
value = prop()
940
773
if not hasattr(value, "variant_level"):
941
properties[name] = value
774
all[name] = value
942
775
continue
943
properties[name] = type(value)(value, variant_level=
944
value.variant_level+1)
945
return dbus.Dictionary(properties, signature="sv")
776
all[name] = type(value)(value, variant_level=
777
value.variant_level+1)
778
return dbus.Dictionary(all, signature="sv")
946
779
947
780
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
948
781
out_signature="s",
949
782
path_keyword='object_path',
950
783
connection_keyword='connection')
951
784
def Introspect(self, object_path, connection):
952
"""Overloading of standard D-Bus method.
953
954
Inserts property tags and interface annotation tags.
785
"""Standard D-Bus method, overloaded to insert property tags.
955
786
"""
956
787
xmlstring = dbus.service.Object.Introspect(self, object_path,
957
788
connection)
964
795
e.setAttribute("access", prop._dbus_access)
965
796
return e
966
797
for if_tag in document.getElementsByTagName("interface"):
967
# Add property tags
968
798
for tag in (make_tag(document, name, prop)
969
799
for name, prop
970
in self._get_all_dbus_things("property")
800
in self._get_all_dbus_properties()
971
801
if prop._dbus_interface
972
802
== if_tag.getAttribute("name")):
973
803
if_tag.appendChild(tag)
974
# Add annotation tags
975
for typ in ("method", "signal", "property"):
976
for tag in if_tag.getElementsByTagName(typ):
977
annots = dict()
978
for name, prop in (self.
979
_get_all_dbus_things(typ)):
980
if (name == tag.getAttribute("name")
981
and prop._dbus_interface
982
== if_tag.getAttribute("name")):
983
annots.update(getattr
984
(prop,
985
"_dbus_annotations",
986
{}))
987
for name, value in annots.items():
988
ann_tag = document.createElement(
989
"annotation")
990
ann_tag.setAttribute("name", name)
991
ann_tag.setAttribute("value", value)
992
tag.appendChild(ann_tag)
993
# Add interface annotation tags
994
for annotation, value in dict(
995
itertools.chain.from_iterable(
996
annotations().items()
997
for name, annotations in
998
self._get_all_dbus_things("interface")
999
if name == if_tag.getAttribute("name")
1000
)).items():
1001
ann_tag = document.createElement("annotation")
1002
ann_tag.setAttribute("name", annotation)
1003
ann_tag.setAttribute("value", value)
1004
if_tag.appendChild(ann_tag)
1005
804
# Add the names to the return values for the
1006
805
# "org.freedesktop.DBus.Properties" methods
1007
806
if (if_tag.getAttribute("name")
1022
821
except (AttributeError, xml.dom.DOMException,
1023
822
xml.parsers.expat.ExpatError) as error:
1024
823
logger.error("Failed to override Introspection method",
1025
exc_info=error)
824
error)
1026
825
return xmlstring
1027
826
1028
827
1029
def datetime_to_dbus(dt, variant_level=0):
828
def datetime_to_dbus (dt, variant_level=0):
1030
829
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1031
830
if dt is None:
1032
831
return dbus.String("", variant_level = variant_level)
1033
832
return dbus.String(dt.isoformat(),
1034
833
variant_level=variant_level)
1035
834
1036
1037
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1038
"""A class decorator; applied to a subclass of
1039
dbus.service.Object, it will add alternate D-Bus attributes with
1040
interface names according to the "alt_interface_names" mapping.
1041
Usage:
1042
1043
@alternate_dbus_interfaces({"org.example.Interface":
1044
"net.example.AlternateInterface"})
1045
class SampleDBusObject(dbus.service.Object):
1046
@dbus.service.method("org.example.Interface")
1047
def SampleDBusMethod():
1048
pass
1049
1050
The above "SampleDBusMethod" on "SampleDBusObject" will be
1051
reachable via two interfaces: "org.example.Interface" and
1052
"net.example.AlternateInterface", the latter of which will have
1053
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1054
"true", unless "deprecate" is passed with a False value.
1055
1056
This works for methods and signals, and also for D-Bus properties
1057
(from DBusObjectWithProperties) and interfaces (from the
1058
dbus_interface_annotations decorator).
835
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
836
.__metaclass__):
837
"""Applied to an empty subclass of a D-Bus object, this metaclass
838
will add additional D-Bus attributes matching a certain pattern.
1059
839
"""
1060
def wrapper(cls):
1061
for orig_interface_name, alt_interface_name in (
1062
alt_interface_names.items()):
1063
attr = {}
1064
interface_names = set()
1065
# Go though all attributes of the class
1066
for attrname, attribute in inspect.getmembers(cls):
840
def __new__(mcs, name, bases, attr):
841
# Go through all the base classes which could have D-Bus
842
# methods, signals, or properties in them
843
for base in (b for b in bases
844
if issubclass(b, dbus.service.Object)):
845
# Go though all attributes of the base class
846
for attrname, attribute in inspect.getmembers(base):
1067
847
# Ignore non-D-Bus attributes, and D-Bus attributes
1068
848
# with the wrong interface name
1069
849
if (not hasattr(attribute, "_dbus_interface")
1070
850
or not attribute._dbus_interface
1071
.startswith(orig_interface_name)):
851
.startswith("se.recompile.Mandos")):
1072
852
continue
1073
853
# Create an alternate D-Bus interface name based on
1074
854
# the current name
1075
855
alt_interface = (attribute._dbus_interface
1076
.replace(orig_interface_name,
1077
alt_interface_name))
1078
interface_names.add(alt_interface)
856
.replace("se.recompile.Mandos",
857
"se.bsnet.fukt.Mandos"))
1079
858
# Is this a D-Bus signal?
1080
859
if getattr(attribute, "_dbus_is_signal", False):
1081
# Extract the original non-method undecorated
1082
# function by black magic
860
# Extract the original non-method function by
861
# black magic
1083
862
nonmethod_func = (dict(
1084
863
zip(attribute.func_code.co_freevars,
1085
864
attribute.__closure__))["func"]
1096
875
nonmethod_func.func_name,
1097
876
nonmethod_func.func_defaults,
1098
877
nonmethod_func.func_closure)))
1099
# Copy annotations, if any
1100
try:
1101
new_function._dbus_annotations = (
1102
dict(attribute._dbus_annotations))
1103
except AttributeError:
1104
pass
1105
878
# Define a creator of a function to call both the
1106
# original and alternate functions, so both the
1107
# original and alternate signals gets sent when
1108
# the function is called
879
# old and new functions, so both the old and new
880
# signals gets sent when the function is called
1109
881
def fixscope(func1, func2):
1110
882
"""This function is a scope container to pass
1111
883
func1 and func2 to the "call_both" function
1118
890
return call_both
1119
891
# Create the "call_both" function and add it to
1120
892
# the class
1121
attr[attrname] = fixscope(attribute, new_function)
893
attr[attrname] = fixscope(attribute,
894
new_function)
1122
895
# Is this a D-Bus method?
1123
896
elif getattr(attribute, "_dbus_is_method", False):
1124
897
# Create a new, but exactly alike, function
1135
908
attribute.func_name,
1136
909
attribute.func_defaults,
1137
910
attribute.func_closure)))
1138
# Copy annotations, if any
1139
try:
1140
attr[attrname]._dbus_annotations = (
1141
dict(attribute._dbus_annotations))
1142
except AttributeError:
1143
pass
1144
911
# Is this a D-Bus property?
1145
912
elif getattr(attribute, "_dbus_is_property", False):
1146
913
# Create a new, but exactly alike, function
1160
927
attribute.func_name,
1161
928
attribute.func_defaults,
1162
929
attribute.func_closure)))
1163
# Copy annotations, if any
1164
try:
1165
attr[attrname]._dbus_annotations = (
1166
dict(attribute._dbus_annotations))
1167
except AttributeError:
1168
pass
1169
# Is this a D-Bus interface?
1170
elif getattr(attribute, "_dbus_is_interface", False):
1171
# Create a new, but exactly alike, function
1172
# object. Decorate it to be a new D-Bus interface
1173
# with the alternate D-Bus interface name. Add it
1174
# to the class.
1175
attr[attrname] = (dbus_interface_annotations
1176
(alt_interface)
1177
(types.FunctionType
1178
(attribute.func_code,
1179
attribute.func_globals,
1180
attribute.func_name,
1181
attribute.func_defaults,
1182
attribute.func_closure)))
1183
if deprecate:
1184
# Deprecate all alternate interfaces
1185
iname="_AlternateDBusNames_interface_annotation{}"
1186
for interface_name in interface_names:
1187
@dbus_interface_annotations(interface_name)
1188
def func(self):
1189
return { "org.freedesktop.DBus.Deprecated":
1190
"true" }
1191
# Find an unused name
1192
for aname in (iname.format(i)
1193
for i in itertools.count()):
1194
if aname not in attr:
1195
attr[aname] = func
1196
break
1197
if interface_names:
1198
# Replace the class with a new subclass of it with
1199
# methods, signals, etc. as created above.
1200
cls = type(b"{}Alternate".format(cls.__name__),
1201
(cls,), attr)
1202
return cls
1203
return wrapper
1204
1205
1206
@alternate_dbus_interfaces({"se.recompile.Mandos":
1207
"se.bsnet.fukt.Mandos"})
930
return type.__new__(mcs, name, bases, attr)
931
1208
932
class ClientDBus(Client, DBusObjectWithProperties):
1209
933
"""A Client class using D-Bus
1210
934
1221
945
def __init__(self, bus = None, *args, **kwargs):
1222
946
self.bus = bus
1223
947
Client.__init__(self, *args, **kwargs)
948
949
self._approvals_pending = 0
1224
950
# Only now, when this client is initialized, can it show up on
1225
951
# the D-Bus
1226
952
client_object_name = unicode(self.name).translate(
1230
956
("/clients/" + client_object_name))
1231
957
DBusObjectWithProperties.__init__(self, self.bus,
1232
958
self.dbus_object_path)
1233
959
1234
960
def notifychangeproperty(transform_func,
1235
961
dbus_name, type_func=lambda x: x,
1236
962
variant_level=1):
1237
963
""" Modify a variable so that it's a property which announces
1238
964
its changes to DBus.
1239
965
1240
966
transform_fun: Function that takes a value and a variant_level
1241
967
and transforms it to a D-Bus type.
1242
968
dbus_name: D-Bus name of the variable
1244
970
to the D-Bus. Default: no transform
1245
971
variant_level: D-Bus variant level. Default: 1
1246
972
"""
1247
attrname = "_{}".format(dbus_name)
973
attrname = "_{0}".format(dbus_name)
1248
974
def setter(self, value):
1249
975
if hasattr(self, "dbus_object_path"):
1250
976
if (not hasattr(self, attrname) or
1259
985
1260
986
return property(lambda self: getattr(self, attrname), setter)
1261
987
988
1262
989
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1263
990
approvals_pending = notifychangeproperty(dbus.Boolean,
1264
991
"ApprovalPending",
1271
998
checker is not None)
1272
999
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1273
1000
"LastCheckedOK")
1274
last_checker_status = notifychangeproperty(dbus.Int16,
1275
"LastCheckerStatus")
1276
1001
last_approval_request = notifychangeproperty(
1277
1002
datetime_to_dbus, "LastApprovalRequest")
1278
1003
approved_by_default = notifychangeproperty(dbus.Boolean,
1279
1004
"ApprovedByDefault")
1280
approval_delay = notifychangeproperty(dbus.UInt64,
1005
approval_delay = notifychangeproperty(dbus.UInt16,
1281
1006
"ApprovalDelay",
1282
1007
type_func =
1283
lambda td: td.total_seconds()
1284
* 1000)
1008
_timedelta_to_milliseconds)
1285
1009
approval_duration = notifychangeproperty(
1286
dbus.UInt64, "ApprovalDuration",
1287
type_func = lambda td: td.total_seconds() * 1000)
1010
dbus.UInt16, "ApprovalDuration",
1011
type_func = _timedelta_to_milliseconds)
1288
1012
host = notifychangeproperty(dbus.String, "Host")
1289
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1290
type_func = lambda td:
1291
td.total_seconds() * 1000)
1013
timeout = notifychangeproperty(dbus.UInt16, "Timeout",
1014
type_func =
1015
_timedelta_to_milliseconds)
1292
1016
extended_timeout = notifychangeproperty(
1293
dbus.UInt64, "ExtendedTimeout",
1294
type_func = lambda td: td.total_seconds() * 1000)
1295
interval = notifychangeproperty(dbus.UInt64,
1017
dbus.UInt16, "ExtendedTimeout",
1018
type_func = _timedelta_to_milliseconds)
1019
interval = notifychangeproperty(dbus.UInt16,
1296
1020
"Interval",
1297
1021
type_func =
1298
lambda td: td.total_seconds()
1299
* 1000)
1022
_timedelta_to_milliseconds)
1300
1023
checker_command = notifychangeproperty(dbus.String, "Checker")
1301
1024
1302
1025
del notifychangeproperty
1330
1053
*args, **kwargs)
1331
1054
1332
1055
def start_checker(self, *args, **kwargs):
1333
old_checker_pid = getattr(self.checker, "pid", None)
1056
old_checker = self.checker
1057
if self.checker is not None:
1058
old_checker_pid = self.checker.pid
1059
else:
1060
old_checker_pid = None
1334
1061
r = Client.start_checker(self, *args, **kwargs)
1335
1062
# Only if new checker process was started
1336
1063
if (self.checker is not None
1340
1067
return r
1341
1068
1342
1069
def _reset_approved(self):
1343
self.approved = None
1070
self._approved = None
1344
1071
return False
1345
1072
1346
1073
def approve(self, value=True):
1347
self.approved = value
1348
gobject.timeout_add(int(self.approval_duration.total_seconds()
1349
* 1000), self._reset_approved)
1350
1074
self.send_changedstate()
1075
self._approved = value
1076
gobject.timeout_add(_timedelta_to_milliseconds
1077
(self.approval_duration),
1078
self._reset_approved)
1079
1351
1080
1352
1081
## D-Bus methods, signals & properties
1353
1082
_interface = "se.recompile.Mandos.Client"
1354
1083
1355
## Interfaces
1356
1357
@dbus_interface_annotations(_interface)
1358
def _foo(self):
1359
return { "org.freedesktop.DBus.Property.EmitsChangedSignal":
1360
"false"}
1361
1362
1084
## Signals
1363
1085
1364
1086
# CheckerCompleted - signal
1455
1177
access="readwrite")
1456
1178
def ApprovalDelay_dbus_property(self, value=None):
1457
1179
if value is None: # get
1458
return dbus.UInt64(self.approval_delay.total_seconds()
1459
* 1000)
1180
return dbus.UInt64(self.approval_delay_milliseconds())
1460
1181
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1461
1182
1462
1183
# ApprovalDuration - property
1464
1185
access="readwrite")
1465
1186
def ApprovalDuration_dbus_property(self, value=None):
1466
1187
if value is None: # get
1467
return dbus.UInt64(self.approval_duration.total_seconds()
1468
* 1000)
1188
return dbus.UInt64(_timedelta_to_milliseconds(
1189
self.approval_duration))
1469
1190
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1470
1191
1471
1192
# Name - property
1484
1205
def Host_dbus_property(self, value=None):
1485
1206
if value is None: # get
1486
1207
return dbus.String(self.host)
1487
self.host = unicode(value)
1208
self.host = value
1488
1209
1489
1210
# Created - property
1490
1211
@dbus_service_property(_interface, signature="s", access="read")
1491
1212
def Created_dbus_property(self):
1492
return datetime_to_dbus(self.created)
1213
return dbus.String(datetime_to_dbus(self.created))
1493
1214
1494
1215
# LastEnabled - property
1495
1216
@dbus_service_property(_interface, signature="s", access="read")
1516
1237
return
1517
1238
return datetime_to_dbus(self.last_checked_ok)
1518
1239
1519
# LastCheckerStatus - property
1520
@dbus_service_property(_interface, signature="n",
1521
access="read")
1522
def LastCheckerStatus_dbus_property(self):
1523
return dbus.Int16(self.last_checker_status)
1524
1525
1240
# Expires - property
1526
1241
@dbus_service_property(_interface, signature="s", access="read")
1527
1242
def Expires_dbus_property(self):
1537
1252
access="readwrite")
1538
1253
def Timeout_dbus_property(self, value=None):
1539
1254
if value is None: # get
1540
return dbus.UInt64(self.timeout.total_seconds() * 1000)
1541
old_timeout = self.timeout
1255
return dbus.UInt64(self.timeout_milliseconds())
1542
1256
self.timeout = datetime.timedelta(0, 0, 0, value)
1543
# Reschedule disabling
1544
if self.enabled:
1545
now = datetime.datetime.utcnow()
1546
self.expires += self.timeout - old_timeout
1547
if self.expires <= now:
1548
# The timeout has passed
1549
self.disable()
1550
else:
1551
if (getattr(self, "disable_initiator_tag", None)
1552
is None):
1553
return
1554
gobject.source_remove(self.disable_initiator_tag)
1555
self.disable_initiator_tag = (
1556
gobject.timeout_add(
1557
int((self.expires - now).total_seconds()
1558
* 1000), self.disable))
1257
if getattr(self, "disable_initiator_tag", None) is None:
1258
return
1259
# Reschedule timeout
1260
gobject.source_remove(self.disable_initiator_tag)
1261
self.disable_initiator_tag = None
1262
self.expires = None
1263
time_to_die = _timedelta_to_milliseconds((self
1264
.last_checked_ok
1265
+ self.timeout)
1266
- datetime.datetime
1267
.utcnow())
1268
if time_to_die <= 0:
1269
# The timeout has passed
1270
self.disable()
1271
else:
1272
self.expires = (datetime.datetime.utcnow()
1273
+ datetime.timedelta(milliseconds =
1274
time_to_die))
1275
self.disable_initiator_tag = (gobject.timeout_add
1276
(time_to_die, self.disable))
1559
1277
1560
1278
# ExtendedTimeout - property
1561
1279
@dbus_service_property(_interface, signature="t",
1562
1280
access="readwrite")
1563
1281
def ExtendedTimeout_dbus_property(self, value=None):
1564
1282
if value is None: # get
1565
return dbus.UInt64(self.extended_timeout.total_seconds()
1566
* 1000)
1283
return dbus.UInt64(self.extended_timeout_milliseconds())
1567
1284
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1568
1285
1569
1286
# Interval - property
1571
1288
access="readwrite")
1572
1289
def Interval_dbus_property(self, value=None):
1573
1290
if value is None: # get
1574
return dbus.UInt64(self.interval.total_seconds() * 1000)
1291
return dbus.UInt64(self.interval_milliseconds())
1575
1292
self.interval = datetime.timedelta(0, 0, 0, value)
1576
1293
if getattr(self, "checker_initiator_tag", None) is None:
1577
1294
return
1578
if self.enabled:
1579
# Reschedule checker run
1580
gobject.source_remove(self.checker_initiator_tag)
1581
self.checker_initiator_tag = (gobject.timeout_add
1582
(value, self.start_checker))
1583
self.start_checker() # Start one now, too
1295
# Reschedule checker run
1296
gobject.source_remove(self.checker_initiator_tag)
1297
self.checker_initiator_tag = (gobject.timeout_add
1298
(value, self.start_checker))
1299
self.start_checker() # Start one now, too
1584
1300
1585
1301
# Checker - property
1586
1302
@dbus_service_property(_interface, signature="s",
1588
1304
def Checker_dbus_property(self, value=None):
1589
1305
if value is None: # get
1590
1306
return dbus.String(self.checker_command)
1591
self.checker_command = unicode(value)
1307
self.checker_command = value
1592
1308
1593
1309
# CheckerRunning - property
1594
1310
@dbus_service_property(_interface, signature="b",
1610
1326
@dbus_service_property(_interface, signature="ay",
1611
1327
access="write", byte_arrays=True)
1612
1328
def Secret_dbus_property(self, value):
1613
self.secret = bytes(value)
1329
self.secret = str(value)
1614
1330
1615
1331
del _interface
1616
1332
1623
1339
raise KeyError()
1624
1340
1625
1341
def __getattribute__(self, name):
1626
if name == '_pipe':
1342
if(name == '_pipe'):
1627
1343
return super(ProxyClient, self).__getattribute__(name)
1628
1344
self._pipe.send(('getattr', name))
1629
1345
data = self._pipe.recv()
1636
1352
return func
1637
1353
1638
1354
def __setattr__(self, name, value):
1639
if name == '_pipe':
1355
if(name == '_pipe'):
1640
1356
return super(ProxyClient, self).__setattr__(name, value)
1641
1357
self._pipe.send(('setattr', name, value))
1642
1358
1359
class ClientDBusTransitional(ClientDBus):
1360
__metaclass__ = AlternateDBusNamesMetaclass
1643
1361
1644
1362
class ClientHandler(socketserver.BaseRequestHandler, object):
1645
1363
"""A class to handle client connections.
1682
1400
logger.debug("Protocol version: %r", line)
1683
1401
try:
1684
1402
if int(line.strip().split()[0]) > 1:
1685
raise RuntimeError(line)
1403
raise RuntimeError
1686
1404
except (ValueError, IndexError, RuntimeError) as error:
1687
1405
logger.error("Unknown protocol version: %s", error)
1688
1406
return
1728
1446
client.Rejected("Disabled")
1729
1447
return
1730
1448
1731
if client.approved or not client.approval_delay:
1449
if client._approved or not client.approval_delay:
1732
1450
#We are approved or approval is disabled
1733
1451
break
1734
elif client.approved is None:
1452
elif client._approved is None:
1735
1453
logger.info("Client %s needs approval",
1736
1454
client.name)
1737
1455
if self.server.use_dbus:
1738
1456
# Emit D-Bus signal
1739
1457
client.NeedApproval(
1740
client.approval_delay.total_seconds()
1741
* 1000, client.approved_by_default)
1458
client.approval_delay_milliseconds(),
1459
client.approved_by_default)
1742
1460
else:
1743
1461
logger.warning("Client %s was not approved",
1744
1462
client.name)
1750
1468
#wait until timeout or approved
1751
1469
time = datetime.datetime.now()
1752
1470
client.changedstate.acquire()
1753
client.changedstate.wait(delay.total_seconds())
1471
(client.changedstate.wait
1472
(float(client._timedelta_to_milliseconds(delay)
1473
/ 1000)))
1754
1474
client.changedstate.release()
1755
1475
time2 = datetime.datetime.now()
1756
1476
if (time2 - time) >= delay:
1772
1492
try:
1773
1493
sent = session.send(client.secret[sent_size:])
1774
1494
except gnutls.errors.GNUTLSError as error:
1775
logger.warning("gnutls send failed",
1776
exc_info=error)
1495
logger.warning("gnutls send failed")
1777
1496
return
1778
1497
logger.debug("Sent: %d, remaining: %d",
1779
1498
sent, len(client.secret)
1782
1501
1783
1502
logger.info("Sending secret to %s", client.name)
1784
1503
# bump the timeout using extended_timeout
1785
client.bump_timeout(client.extended_timeout)
1504
client.checked_ok(client.extended_timeout)
1786
1505
if self.server.use_dbus:
1787
1506
# Emit D-Bus signal
1788
1507
client.GotSecret()
1793
1512
try:
1794
1513
session.bye()
1795
1514
except gnutls.errors.GNUTLSError as error:
1796
logger.warning("GnuTLS bye failed",
1797
exc_info=error)
1515
logger.warning("GnuTLS bye failed")
1798
1516
1799
1517
@staticmethod
1800
1518
def peer_certificate(session):
1856
1574
# Convert the buffer to a Python bytestring
1857
1575
fpr = ctypes.string_at(buf, buf_len.value)
1858
1576
# Convert the bytestring to hexadecimal notation
1859
hex_fpr = binascii.hexlify(fpr).upper()
1577
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
1860
1578
return hex_fpr
1861
1579
1862
1580
1865
1583
def sub_process_main(self, request, address):
1866
1584
try:
1867
1585
self.finish_request(request, address)
1868
except Exception:
1586
except:
1869
1587
self.handle_error(request, address)
1870
1588
self.close_request(request)
1871
1589
1872
1590
def process_request(self, request, address):
1873
1591
"""Start a new process to process the request."""
1874
1592
proc = multiprocessing.Process(target = self.sub_process_main,
1875
args = (request, address))
1593
args = (request,
1594
address))
1876
1595
proc.start()
1877
1596
return proc
1878
1597
1893
1612
1894
1613
def add_pipe(self, parent_pipe, proc):
1895
1614
"""Dummy function; override as necessary"""
1896
raise NotImplementedError()
1615
raise NotImplementedError
1897
1616
1898
1617
1899
1618
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1906
1625
use_ipv6: Boolean; to use IPv6 or not
1907
1626
"""
1908
1627
def __init__(self, server_address, RequestHandlerClass,
1909
interface=None, use_ipv6=True, socketfd=None):
1910
"""If socketfd is set, use that file descriptor instead of
1911
creating a new one with socket.socket().
1912
"""
1628
interface=None, use_ipv6=True):
1913
1629
self.interface = interface
1914
1630
if use_ipv6:
1915
1631
self.address_family = socket.AF_INET6
1916
if socketfd is not None:
1917
# Save the file descriptor
1918
self.socketfd = socketfd
1919
# Save the original socket.socket() function
1920
self.socket_socket = socket.socket
1921
# To implement --socket, we monkey patch socket.socket.
1922
#
1923
# (When socketserver.TCPServer is a new-style class, we
1924
# could make self.socket into a property instead of monkey
1925
# patching socket.socket.)
1926
#
1927
# Create a one-time-only replacement for socket.socket()
1928
@functools.wraps(socket.socket)
1929
def socket_wrapper(*args, **kwargs):
1930
# Restore original function so subsequent calls are
1931
# not affected.
1932
socket.socket = self.socket_socket
1933
del self.socket_socket
1934
# This time only, return a new socket object from the
1935
# saved file descriptor.
1936
return socket.fromfd(self.socketfd, *args, **kwargs)
1937
# Replace socket.socket() function with wrapper
1938
socket.socket = socket_wrapper
1939
# The socketserver.TCPServer.__init__ will call
1940
# socket.socket(), which might be our replacement,
1941
# socket_wrapper(), if socketfd was set.
1942
1632
socketserver.TCPServer.__init__(self, server_address,
1943
1633
RequestHandlerClass)
1944
1945
1634
def server_bind(self):
1946
1635
"""This overrides the normal server_bind() function
1947
1636
to bind to an interface if one was specified, and also NOT to
1955
1644
try:
1956
1645
self.socket.setsockopt(socket.SOL_SOCKET,
1957
1646
SO_BINDTODEVICE,
1958
(self.interface + "\0")
1959
.encode("utf-8"))
1647
str(self.interface
1648
+ '\0'))
1960
1649
except socket.error as error:
1961
if error.errno == errno.EPERM:
1962
logger.error("No permission to bind to"
1963
" interface %s", self.interface)
1964
elif error.errno == errno.ENOPROTOOPT:
1650
if error[0] == errno.EPERM:
1651
logger.error("No permission to"
1652
" bind to interface %s",
1653
self.interface)
1654
elif error[0] == errno.ENOPROTOOPT:
1965
1655
logger.error("SO_BINDTODEVICE not available;"
1966
1656
" cannot bind to interface %s",
1967
1657
self.interface)
1968
elif error.errno == errno.ENODEV:
1969
logger.error("Interface %s does not exist,"
1970
" cannot bind", self.interface)
1971
1658
else:
1972
1659
raise
1973
1660
# Only bind(2) the socket if we really need to.
1976
1663
if self.address_family == socket.AF_INET6:
1977
1664
any_address = "::" # in6addr_any
1978
1665
else:
1979
any_address = "0.0.0.0" # INADDR_ANY
1666
any_address = socket.INADDR_ANY
1980
1667
self.server_address = (any_address,
1981
1668
self.server_address[1])
1982
1669
elif not self.server_address[1]:
2003
1690
"""
2004
1691
def __init__(self, server_address, RequestHandlerClass,
2005
1692
interface=None, use_ipv6=True, clients=None,
2006
gnutls_priority=None, use_dbus=True, socketfd=None):
1693
gnutls_priority=None, use_dbus=True):
2007
1694
self.enabled = False
2008
1695
self.clients = clients
2009
1696
if self.clients is None:
2013
1700
IPv6_TCPServer.__init__(self, server_address,
2014
1701
RequestHandlerClass,
2015
1702
interface = interface,
2016
use_ipv6 = use_ipv6,
2017
socketfd = socketfd)
1703
use_ipv6 = use_ipv6)
2018
1704
def server_activate(self):
2019
1705
if self.enabled:
2020
1706
return socketserver.TCPServer.server_activate(self)
2033
1719
2034
1720
def handle_ipc(self, source, condition, parent_pipe=None,
2035
1721
proc = None, client_object=None):
1722
condition_names = {
1723
gobject.IO_IN: "IN", # There is data to read.
1724
gobject.IO_OUT: "OUT", # Data can be written (without
1725
# blocking).
1726
gobject.IO_PRI: "PRI", # There is urgent data to read.
1727
gobject.IO_ERR: "ERR", # Error condition.
1728
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1729
# broken, usually for pipes and
1730
# sockets).
1731
}
1732
conditions_string = ' | '.join(name
1733
for cond, name in
1734
condition_names.iteritems()
1735
if cond & condition)
2036
1736
# error, or the other end of multiprocessing.Pipe has closed
2037
if condition & (gobject.IO_ERR | gobject.IO_HUP):
1737
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2038
1738
# Wait for other process to exit
2039
1739
proc.join()
2040
1740
return False
2098
1798
return True
2099
1799
2100
1800
2101
def rfc3339_duration_to_delta(duration):
2102
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2103
2104
>>> rfc3339_duration_to_delta("P7D")
2105
datetime.timedelta(7)
2106
>>> rfc3339_duration_to_delta("PT60S")
2107
datetime.timedelta(0, 60)
2108
>>> rfc3339_duration_to_delta("PT60M")
2109
datetime.timedelta(0, 3600)
2110
>>> rfc3339_duration_to_delta("PT24H")
2111
datetime.timedelta(1)
2112
>>> rfc3339_duration_to_delta("P1W")
2113
datetime.timedelta(7)
2114
>>> rfc3339_duration_to_delta("PT5M30S")
2115
datetime.timedelta(0, 330)
2116
>>> rfc3339_duration_to_delta("P1DT3M20S")
2117
datetime.timedelta(1, 200)
2118
"""
2119
2120
# Parsing an RFC 3339 duration with regular expressions is not
2121
# possible - there would have to be multiple places for the same
2122
# values, like seconds. The current code, while more esoteric, is
2123
# cleaner without depending on a parsing library. If Python had a
2124
# built-in library for parsing we would use it, but we'd like to
2125
# avoid excessive use of external libraries.
2126
2127
# New type for defining tokens, syntax, and semantics all-in-one
2128
Token = collections.namedtuple("Token",
2129
("regexp", # To match token; if
2130
# "value" is not None,
2131
# must have a "group"
2132
# containing digits
2133
"value", # datetime.timedelta or
2134
# None
2135
"followers")) # Tokens valid after
2136
# this token
2137
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2138
# the "duration" ABNF definition in RFC 3339, Appendix A.
2139
token_end = Token(re.compile(r"$"), None, frozenset())
2140
token_second = Token(re.compile(r"(\d+)S"),
2141
datetime.timedelta(seconds=1),
2142
frozenset((token_end,)))
2143
token_minute = Token(re.compile(r"(\d+)M"),
2144
datetime.timedelta(minutes=1),
2145
frozenset((token_second, token_end)))
2146
token_hour = Token(re.compile(r"(\d+)H"),
2147
datetime.timedelta(hours=1),
2148
frozenset((token_minute, token_end)))
2149
token_time = Token(re.compile(r"T"),
2150
None,
2151
frozenset((token_hour, token_minute,
2152
token_second)))
2153
token_day = Token(re.compile(r"(\d+)D"),
2154
datetime.timedelta(days=1),
2155
frozenset((token_time, token_end)))
2156
token_month = Token(re.compile(r"(\d+)M"),
2157
datetime.timedelta(weeks=4),
2158
frozenset((token_day, token_end)))
2159
token_year = Token(re.compile(r"(\d+)Y"),
2160
datetime.timedelta(weeks=52),
2161
frozenset((token_month, token_end)))
2162
token_week = Token(re.compile(r"(\d+)W"),
2163
datetime.timedelta(weeks=1),
2164
frozenset((token_end,)))
2165
token_duration = Token(re.compile(r"P"), None,
2166
frozenset((token_year, token_month,
2167
token_day, token_time,
2168
token_week)))
2169
# Define starting values
2170
value = datetime.timedelta() # Value so far
2171
found_token = None
2172
followers = frozenset((token_duration,)) # Following valid tokens
2173
s = duration # String left to parse
2174
# Loop until end token is found
2175
while found_token is not token_end:
2176
# Search for any currently valid tokens
2177
for token in followers:
2178
match = token.regexp.match(s)
2179
if match is not None:
2180
# Token found
2181
if token.value is not None:
2182
# Value found, parse digits
2183
factor = int(match.group(1), 10)
2184
# Add to value so far
2185
value += factor * token.value
2186
# Strip token from string
2187
s = token.regexp.sub("", s, 1)
2188
# Go to found token
2189
found_token = token
2190
# Set valid next tokens
2191
followers = found_token.followers
2192
break
2193
else:
2194
# No currently valid tokens were found
2195
raise ValueError("Invalid RFC 3339 duration")
2196
# End token found
2197
return value
2198
2199
2200
1801
def string_to_delta(interval):
2201
1802
"""Parse a string and return a datetime.timedelta
2202
1803
2213
1814
>>> string_to_delta('5m 30s')
2214
1815
datetime.timedelta(0, 330)
2215
1816
"""
2216
2217
try:
2218
return rfc3339_duration_to_delta(interval)
2219
except ValueError:
2220
pass
2221
2222
1817
timevalue = datetime.timedelta(0)
2223
1818
for s in interval.split():
2224
1819
try:
2225
suffix = s[-1]
1820
suffix = unicode(s[-1])
2226
1821
value = int(s[:-1])
2227
1822
if suffix == "d":
2228
1823
delta = datetime.timedelta(value)
2235
1830
elif suffix == "w":
2236
1831
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2237
1832
else:
2238
raise ValueError("Unknown suffix {!r}"
2239
.format(suffix))
2240
except IndexError as e:
1833
raise ValueError("Unknown suffix %r" % suffix)
1834
except (ValueError, IndexError) as e:
2241
1835
raise ValueError(*(e.args))
2242
1836
timevalue += delta
2243
1837
return timevalue
2244
1838
2245
1839
1840
def if_nametoindex(interface):
1841
"""Call the C function if_nametoindex(), or equivalent
1842
1843
Note: This function cannot accept a unicode string."""
1844
global if_nametoindex
1845
try:
1846
if_nametoindex = (ctypes.cdll.LoadLibrary
1847
(ctypes.util.find_library("c"))
1848
.if_nametoindex)
1849
except (OSError, AttributeError):
1850
logger.warning("Doing if_nametoindex the hard way")
1851
def if_nametoindex(interface):
1852
"Get an interface index the hard way, i.e. using fcntl()"
1853
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1854
with contextlib.closing(socket.socket()) as s:
1855
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1856
struct.pack(str("16s16x"),
1857
interface))
1858
interface_index = struct.unpack(str("I"),
1859
ifreq[16:20])[0]
1860
return interface_index
1861
return if_nametoindex(interface)
1862
1863
2246
1864
def daemon(nochdir = False, noclose = False):
2247
1865
"""See daemon(3). Standard BSD Unix function.
2248
1866
2256
1874
sys.exit()
2257
1875
if not noclose:
2258
1876
# Close all standard open file descriptors
2259
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1877
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2260
1878
if not stat.S_ISCHR(os.fstat(null).st_mode):
2261
raise OSError(errno.ENODEV, "{} not a character device"
2262
.format(os.devnull))
1879
raise OSError(errno.ENODEV,
1880
"%s not a character device"
1881
% os.path.devnull)
2263
1882
os.dup2(null, sys.stdin.fileno())
2264
1883
os.dup2(null, sys.stdout.fileno())
2265
1884
os.dup2(null, sys.stderr.fileno())
2274
1893
2275
1894
parser = argparse.ArgumentParser()
2276
1895
parser.add_argument("-v", "--version", action="version",
2277
version = "%(prog)s {}".format(version),
1896
version = "%%(prog)s %s" % version,
2278
1897
help="show version number and exit")
2279
1898
parser.add_argument("-i", "--interface", metavar="IF",
2280
1899
help="Bind to interface IF")
2286
1905
help="Run self-test")
2287
1906
parser.add_argument("--debug", action="store_true",
2288
1907
help="Debug mode; run in foreground and log"
2289
" to terminal", default=None)
1908
" to terminal")
2290
1909
parser.add_argument("--debuglevel", metavar="LEVEL",
2291
1910
help="Debug level for stdout output")
2292
1911
parser.add_argument("--priority", help="GnuTLS"
2299
1918
" files")
2300
1919
parser.add_argument("--no-dbus", action="store_false",
2301
1920
dest="use_dbus", help="Do not provide D-Bus"
2302
" system bus interface", default=None)
1921
" system bus interface")
2303
1922
parser.add_argument("--no-ipv6", action="store_false",
2304
dest="use_ipv6", help="Do not use IPv6",
2305
default=None)
1923
dest="use_ipv6", help="Do not use IPv6")
2306
1924
parser.add_argument("--no-restore", action="store_false",
2307
dest="restore", help="Do not restore stored"
2308
" state", default=None)
2309
parser.add_argument("--socket", type=int,
2310
help="Specify a file descriptor to a network"
2311
" socket to use instead of creating one")
2312
parser.add_argument("--statedir", metavar="DIR",
2313
help="Directory to save/restore state in")
2314
parser.add_argument("--foreground", action="store_true",
2315
help="Run in foreground", default=None)
2316
parser.add_argument("--no-zeroconf", action="store_false",
2317
dest="zeroconf", help="Do not use Zeroconf",
2318
default=None)
2319
1925
dest="restore", help="Do not restore stored state",
1926
default=True)
1927
2320
1928
options = parser.parse_args()
2321
1929
2322
1930
if options.check:
2323
1931
import doctest
2324
fail_count, test_count = doctest.testmod()
2325
sys.exit(os.EX_OK if fail_count == 0 else 1)
1932
doctest.testmod()
1933
sys.exit()
2326
1934
2327
1935
# Default values for config file for server-global settings
2328
1936
server_defaults = { "interface": "",
2330
1938
"port": "",
2331
1939
"debug": "False",
2332
1940
"priority":
2333
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:+SIGN-RSA-SHA224:+SIGN-RSA-RMD160",
1941
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2334
1942
"servicename": "Mandos",
2335
1943
"use_dbus": "True",
2336
1944
"use_ipv6": "True",
2337
1945
"debuglevel": "",
2338
"restore": "True",
2339
"socket": "",
2340
"statedir": "/var/lib/mandos",
2341
"foreground": "False",
2342
"zeroconf": "True",
2343
1946
}
2344
1947
2345
1948
# Parse config file for server-global settings
2350
1953
# Convert the SafeConfigParser object to a dict
2351
1954
server_settings = server_config.defaults()
2352
1955
# Use the appropriate methods on the non-string config options
2353
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
1956
for option in ("debug", "use_dbus", "use_ipv6"):
2354
1957
server_settings[option] = server_config.getboolean("DEFAULT",
2355
1958
option)
2356
1959
if server_settings["port"]:
2357
1960
server_settings["port"] = server_config.getint("DEFAULT",
2358
1961
"port")
2359
if server_settings["socket"]:
2360
server_settings["socket"] = server_config.getint("DEFAULT",
2361
"socket")
2362
# Later, stdin will, and stdout and stderr might, be dup'ed
2363
# over with an opened os.devnull. But we don't want this to
2364
# happen with a supplied network socket.
2365
if 0 <= server_settings["socket"] <= 2:
2366
server_settings["socket"] = os.dup(server_settings
2367
["socket"])
2368
1962
del server_config
2369
1963
2370
1964
# Override the settings from the config file with command line
2371
1965
# options, if set.
2372
1966
for option in ("interface", "address", "port", "debug",
2373
1967
"priority", "servicename", "configdir",
2374
"use_dbus", "use_ipv6", "debuglevel", "restore",
2375
"statedir", "socket", "foreground", "zeroconf"):
1968
"use_dbus", "use_ipv6", "debuglevel", "restore"):
2376
1969
value = getattr(options, option)
2377
1970
if value is not None:
2378
1971
server_settings[option] = value
2379
1972
del options
2380
1973
# Force all strings to be unicode
2381
1974
for option in server_settings.keys():
2382
if isinstance(server_settings[option], bytes):
2383
server_settings[option] = (server_settings[option]
2384
.decode("utf-8"))
2385
# Force all boolean options to be boolean
2386
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2387
"foreground", "zeroconf"):
2388
server_settings[option] = bool(server_settings[option])
2389
# Debug implies foreground
2390
if server_settings["debug"]:
2391
server_settings["foreground"] = True
1975
if type(server_settings[option]) is str:
1976
server_settings[option] = unicode(server_settings[option])
2392
1977
# Now we have our good server settings in "server_settings"
2393
1978
2394
1979
##################################################################
2395
1980
2396
if (not server_settings["zeroconf"] and
2397
not (server_settings["port"]
2398
or server_settings["socket"] != "")):
2399
parser.error("Needs port or socket to work without"
2400
" Zeroconf")
2401
2402
1981
# For convenience
2403
1982
debug = server_settings["debug"]
2404
1983
debuglevel = server_settings["debuglevel"]
2405
1984
use_dbus = server_settings["use_dbus"]
2406
1985
use_ipv6 = server_settings["use_ipv6"]
2407
stored_state_path = os.path.join(server_settings["statedir"],
2408
stored_state_file)
2409
foreground = server_settings["foreground"]
2410
zeroconf = server_settings["zeroconf"]
2411
2412
if debug:
2413
initlogger(debug, logging.DEBUG)
2414
else:
2415
if not debuglevel:
2416
initlogger(debug)
2417
else:
2418
level = getattr(logging, debuglevel.upper())
2419
initlogger(debug, level)
2420
1986
2421
1987
if server_settings["servicename"] != "Mandos":
2422
1988
syslogger.setFormatter(logging.Formatter
2423
('Mandos ({}) [%(process)d]:'
2424
' %(levelname)s: %(message)s'
2425
.format(server_settings
2426
["servicename"])))
1989
('Mandos (%s) [%%(process)d]:'
1990
' %%(levelname)s: %%(message)s'
1991
% server_settings["servicename"]))
2427
1992
2428
1993
# Parse config file with clients
2429
client_config = configparser.SafeConfigParser(Client
2430
.client_defaults)
1994
client_defaults = { "timeout": "5m",
1995
"extended_timeout": "15m",
1996
"interval": "2m",
1997
"checker": "fping -q -- %%(host)s",
1998
"host": "",
1999
"approval_delay": "0s",
2000
"approval_duration": "1s",
2001
}
2002
client_config = configparser.SafeConfigParser(client_defaults)
2431
2003
client_config.read(os.path.join(server_settings["configdir"],
2432
2004
"clients.conf"))
2433
2005
2434
2006
global mandos_dbus_service
2435
2007
mandos_dbus_service = None
2436
2008
2437
socketfd = None
2438
if server_settings["socket"] != "":
2439
socketfd = server_settings["socket"]
2440
2009
tcp_server = MandosServer((server_settings["address"],
2441
2010
server_settings["port"]),
2442
2011
ClientHandler,
2445
2014
use_ipv6=use_ipv6,
2446
2015
gnutls_priority=
2447
2016
server_settings["priority"],
2448
use_dbus=use_dbus,
2449
socketfd=socketfd)
2450
if not foreground:
2451
pidfilename = "/run/mandos.pid"
2452
if not os.path.isdir("/run/."):
2453
pidfilename = "/var/run/mandos.pid"
2454
pidfile = None
2017
use_dbus=use_dbus)
2018
if not debug:
2019
pidfilename = "/var/run/mandos.pid"
2455
2020
try:
2456
2021
pidfile = open(pidfilename, "w")
2457
except IOError as e:
2458
logger.error("Could not open file %r", pidfilename,
2459
exc_info=e)
2022
except IOError:
2023
logger.error("Could not open file %r", pidfilename)
2460
2024
2461
for name in ("_mandos", "mandos", "nobody"):
2025
try:
2026
uid = pwd.getpwnam("_mandos").pw_uid
2027
gid = pwd.getpwnam("_mandos").pw_gid
2028
except KeyError:
2462
2029
try:
2463
uid = pwd.getpwnam(name).pw_uid
2464
gid = pwd.getpwnam(name).pw_gid
2465
break
2030
uid = pwd.getpwnam("mandos").pw_uid
2031
gid = pwd.getpwnam("mandos").pw_gid
2466
2032
except KeyError:
2467
continue
2468
else:
2469
uid = 65534
2470
gid = 65534
2033
try:
2034
uid = pwd.getpwnam("nobody").pw_uid
2035
gid = pwd.getpwnam("nobody").pw_gid
2036
except KeyError:
2037
uid = 65534
2038
gid = 65534
2471
2039
try:
2472
2040
os.setgid(gid)
2473
2041
os.setuid(uid)
2474
2042
except OSError as error:
2475
if error.errno != errno.EPERM:
2476
raise
2043
if error[0] != errno.EPERM:
2044
raise error
2045
2046
if not debug and not debuglevel:
2047
logger.setLevel(logging.WARNING)
2048
if debuglevel:
2049
level = getattr(logging, debuglevel.upper())
2050
logger.setLevel(level)
2477
2051
2478
2052
if debug:
2053
logger.setLevel(logging.DEBUG)
2479
2054
# Enable all possible GnuTLS debugging
2480
2055
2481
2056
# "Use a log level over 10 to enable all debugging options."
2490
2065
.gnutls_global_set_log_function(debug_gnutls))
2491
2066
2492
2067
# Redirect stdin so all checkers get /dev/null
2493
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2068
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2494
2069
os.dup2(null, sys.stdin.fileno())
2495
2070
if null > 2:
2496
2071
os.close(null)
2072
else:
2073
# No console logging
2074
logger.removeHandler(console)
2497
2075
2498
2076
# Need to fork before connecting to D-Bus
2499
if not foreground:
2077
if not debug:
2500
2078
# Close all input and output, do double fork, etc.
2501
2079
daemon()
2502
2080
2503
# multiprocessing will use threads, so before we use gobject we
2504
# need to inform gobject that threads will be used.
2505
gobject.threads_init()
2506
2507
2081
global main_loop
2508
2082
# From the Avahi example code
2509
DBusGMainLoop(set_as_default=True)
2083
DBusGMainLoop(set_as_default=True )
2510
2084
main_loop = gobject.MainLoop()
2511
2085
bus = dbus.SystemBus()
2512
2086
# End of Avahi example code
2518
2092
("se.bsnet.fukt.Mandos", bus,
2519
2093
do_not_queue=True))
2520
2094
except dbus.exceptions.NameExistsException as e:
2521
logger.error("Disabling D-Bus:", exc_info=e)
2095
logger.error(unicode(e) + ", disabling D-Bus")
2522
2096
use_dbus = False
2523
2097
server_settings["use_dbus"] = False
2524
2098
tcp_server.use_dbus = False
2525
if zeroconf:
2526
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2527
service = AvahiServiceToSyslog(name =
2528
server_settings["servicename"],
2529
servicetype = "_mandos._tcp",
2530
protocol = protocol, bus = bus)
2531
if server_settings["interface"]:
2532
service.interface = (if_nametoindex
2533
(server_settings["interface"]
2534
.encode("utf-8")))
2099
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2100
service = AvahiServiceToSyslog(name =
2101
server_settings["servicename"],
2102
servicetype = "_mandos._tcp",
2103
protocol = protocol, bus = bus)
2104
if server_settings["interface"]:
2105
service.interface = (if_nametoindex
2106
(str(server_settings["interface"])))
2535
2107
2536
2108
global multiprocessing_manager
2537
2109
multiprocessing_manager = multiprocessing.Manager()
2538
2110
2539
2111
client_class = Client
2540
2112
if use_dbus:
2541
client_class = functools.partial(ClientDBus, bus = bus)
2542
2543
client_settings = Client.config_parser(client_config)
2113
client_class = functools.partial(ClientDBusTransitional,
2114
bus = bus)
2115
2116
special_settings = {
2117
# Some settings need to be accessd by special methods;
2118
# booleans need .getboolean(), etc. Here is a list of them:
2119
"approved_by_default":
2120
lambda section:
2121
client_config.getboolean(section, "approved_by_default"),
2122
}
2123
# Construct a new dict of client settings of this form:
2124
# { client_name: {setting_name: value, ...}, ...}
2125
# with exceptions for any special settings as defined above
2126
client_settings = dict((clientname,
2127
dict((setting,
2128
(value if setting not in special_settings
2129
else special_settings[setting](clientname)))
2130
for setting, value in client_config.items(clientname)))
2131
for clientname in client_config.sections())
2132
2544
2133
old_client_settings = {}
2545
clients_data = {}
2546
2547
# This is used to redirect stdout and stderr for checker processes
2548
global wnull
2549
wnull = open(os.devnull, "w") # A writable /dev/null
2550
# Only used if server is running in foreground but not in debug
2551
# mode
2552
if debug or not foreground:
2553
wnull.close()
2554
2555
# Get client data and settings from last running state.
2134
clients_data = []
2135
2136
# Get client data and settings from last running state.
2556
2137
if server_settings["restore"]:
2557
2138
try:
2558
2139
with open(stored_state_path, "rb") as stored_state:
2559
clients_data, old_client_settings = (pickle.load
2560
(stored_state))
2140
clients_data, old_client_settings = pickle.load(stored_state)
2561
2141
os.remove(stored_state_path)
2562
2142
except IOError as e:
2563
if e.errno == errno.ENOENT:
2564
logger.warning("Could not load persistent state: {}"
2565
.format(os.strerror(e.errno)))
2566
else:
2567
logger.critical("Could not load persistent state:",
2568
exc_info=e)
2143
logger.warning("Could not load persistant state: {0}".format(e))
2144
if e.errno != errno.ENOENT:
2569
2145
raise
2570
except EOFError as e:
2571
logger.warning("Could not load persistent state: "
2572
"EOFError:", exc_info=e)
2573
2574
with PGPEngine() as pgp:
2575
for client_name, client in clients_data.items():
2576
# Skip removed clients
2577
if client_name not in client_settings:
2578
continue
2579
2580
# Decide which value to use after restoring saved state.
2581
# We have three different values: Old config file,
2582
# new config file, and saved state.
2583
# New config value takes precedence if it differs from old
2584
# config value, otherwise use saved state.
2585
for name, value in client_settings[client_name].items():
2586
try:
2587
# For each value in new config, check if it
2588
# differs from the old config value (Except for
2589
# the "secret" attribute)
2590
if (name != "secret" and
2591
value != old_client_settings[client_name]
2592
[name]):
2593
client[name] = value
2594
except KeyError:
2595
pass
2596
2597
# Clients who has passed its expire date can still be
2598
# enabled if its last checker was successful. Clients
2599
# whose checker succeeded before we stored its state is
2600
# assumed to have successfully run all checkers during
2601
# downtime.
2602
if client["enabled"]:
2603
if datetime.datetime.utcnow() >= client["expires"]:
2604
if not client["last_checked_ok"]:
2605
logger.warning(
2606
"disabling client {} - Client never "
2607
"performed a successful checker"
2608
.format(client_name))
2609
client["enabled"] = False
2610
elif client["last_checker_status"] != 0:
2611
logger.warning(
2612
"disabling client {} - Client last"
2613
" checker failed with error code {}"
2614
.format(client_name,
2615
client["last_checker_status"]))
2616
client["enabled"] = False
2617
else:
2618
client["expires"] = (datetime.datetime
2619
.utcnow()
2620
+ client["timeout"])
2621
logger.debug("Last checker succeeded,"
2622
" keeping {} enabled"
2623
.format(client_name))
2146
2147
for client in clients_data:
2148
client_name = client["name"]
2149
2150
# Decide which value to use after restoring saved state.
2151
# We have three different values: Old config file,
2152
# new config file, and saved state.
2153
# New config value takes precedence if it differs from old
2154
# config value, otherwise use saved state.
2155
for name, value in client_settings[client_name].items():
2624
2156
try:
2625
client["secret"] = (
2626
pgp.decrypt(client["encrypted_secret"],
2627
client_settings[client_name]
2628
["secret"]))
2629
except PGPError:
2630
# If decryption fails, we use secret from new settings
2631
logger.debug("Failed to decrypt {} old secret"
2632
.format(client_name))
2633
client["secret"] = (
2634
client_settings[client_name]["secret"])
2635
2636
# Add/remove clients based on new changes made to config
2637
for client_name in (set(old_client_settings)
2638
- set(client_settings)):
2639
del clients_data[client_name]
2640
for client_name in (set(client_settings)
2641
- set(old_client_settings)):
2642
clients_data[client_name] = client_settings[client_name]
2643
2644
# Create all client objects
2645
for client_name, client in clients_data.items():
2646
tcp_server.clients[client_name] = client_class(
2647
name = client_name, settings = client,
2648
server_settings = server_settings)
2649
2157
# For each value in new config, check if it differs
2158
# from the old config value (Except for the "secret"
2159
# attribute)
2160
if name != "secret" and value != old_client_settings[client_name][name]:
2161
setattr(client, name, value)
2162
except KeyError:
2163
pass
2164
2165
# Clients who has passed its expire date, can still be enabled if its
2166
# last checker was sucessful. Clients who checkers failed before we
2167
# stored it state is asumed to had failed checker during downtime.
2168
if client["enabled"] and client["last_checked_ok"]:
2169
if ((datetime.datetime.utcnow() - client["last_checked_ok"])
2170
> client["interval"]):
2171
if client["last_checker_status"] != 0:
2172
client["enabled"] = False
2173
else:
2174
client["expires"] = datetime.datetime.utcnow() + client["timeout"]
2175
2176
client["changedstate"] = (multiprocessing_manager
2177
.Condition(multiprocessing_manager
2178
.Lock()))
2179
if use_dbus:
2180
new_client = ClientDBusTransitional.__new__(ClientDBusTransitional)
2181
tcp_server.clients[client_name] = new_client
2182
new_client.bus = bus
2183
for name, value in client.iteritems():
2184
setattr(new_client, name, value)
2185
client_object_name = unicode(client_name).translate(
2186
{ord("."): ord("_"),
2187
ord("-"): ord("_")})
2188
new_client.dbus_object_path = (dbus.ObjectPath
2189
("/clients/" + client_object_name))
2190
DBusObjectWithProperties.__init__(new_client,
2191
new_client.bus,
2192
new_client.dbus_object_path)
2193
else:
2194
tcp_server.clients[client_name] = Client.__new__(Client)
2195
for name, value in client.iteritems():
2196
setattr(tcp_server.clients[client_name], name, value)
2197
2198
tcp_server.clients[client_name].decrypt_secret(
2199
client_settings[client_name]["secret"])
2200
2201
# Create/remove clients based on new changes made to config
2202
for clientname in set(old_client_settings) - set(client_settings):
2203
del tcp_server.clients[clientname]
2204
for clientname in set(client_settings) - set(old_client_settings):
2205
tcp_server.clients[clientname] = (client_class(name = clientname,
2206
config =
2207
client_settings
2208
[clientname]))
2209
2210
2650
2211
if not tcp_server.clients:
2651
2212
logger.warning("No clients defined")
2652
2653
if not foreground:
2654
if pidfile is not None:
2655
try:
2656
with pidfile:
2657
pid = os.getpid()
2658
pidfile.write("{}\n".format(pid).encode("utf-8"))
2659
except IOError:
2660
logger.error("Could not write to file %r with PID %d",
2661
pidfilename, pid)
2662
del pidfile
2213
2214
if not debug:
2215
try:
2216
with pidfile:
2217
pid = os.getpid()
2218
pidfile.write(str(pid) + "\n".encode("utf-8"))
2219
del pidfile
2220
except IOError:
2221
logger.error("Could not write to file %r with PID %d",
2222
pidfilename, pid)
2223
except NameError:
2224
# "pidfile" was never created
2225
pass
2663
2226
del pidfilename
2227
2228
signal.signal(signal.SIGINT, signal.SIG_IGN)
2664
2229
2665
2230
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2666
2231
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2667
2232
2668
2233
if use_dbus:
2669
@alternate_dbus_interfaces({"se.recompile.Mandos":
2670
"se.bsnet.fukt.Mandos"})
2671
class MandosDBusService(DBusObjectWithProperties):
2234
class MandosDBusService(dbus.service.Object):
2672
2235
"""A D-Bus proxy object"""
2673
2236
def __init__(self):
2674
2237
dbus.service.Object.__init__(self, bus, "/")
2675
2238
_interface = "se.recompile.Mandos"
2676
2239
2677
@dbus_interface_annotations(_interface)
2678
def _foo(self):
2679
return { "org.freedesktop.DBus.Property"
2680
".EmitsChangedSignal":
2681
"false"}
2682
2683
2240
@dbus.service.signal(_interface, signature="o")
2684
2241
def ClientAdded(self, objpath):
2685
2242
"D-Bus signal"
2727
2284
2728
2285
del _interface
2729
2286
2730
mandos_dbus_service = MandosDBusService()
2287
class MandosDBusServiceTransitional(MandosDBusService):
2288
__metaclass__ = AlternateDBusNamesMetaclass
2289
mandos_dbus_service = MandosDBusServiceTransitional()
2731
2290
2732
2291
def cleanup():
2733
2292
"Cleanup function; run on exit"
2734
if zeroconf:
2735
service.cleanup()
2293
service.cleanup()
2736
2294
2737
2295
multiprocessing.active_children()
2738
wnull.close()
2739
2296
if not (tcp_server.clients or client_settings):
2740
2297
return
2741
2742
# Store client before exiting. Secrets are encrypted with key
2743
# based on what config file has. If config file is
2744
# removed/edited, old secret will thus be unrecovable.
2745
clients = {}
2746
with PGPEngine() as pgp:
2747
for client in tcp_server.clients.itervalues():
2748
key = client_settings[client.name]["secret"]
2749
client.encrypted_secret = pgp.encrypt(client.secret,
2750
key)
2751
client_dict = {}
2752
2753
# A list of attributes that can not be pickled
2754
# + secret.
2755
exclude = { "bus", "changedstate", "secret",
2756
"checker", "server_settings" }
2757
for name, typ in (inspect.getmembers
2758
(dbus.service.Object)):
2759
exclude.add(name)
2760
2761
client_dict["encrypted_secret"] = (client
2762
.encrypted_secret)
2763
for attr in client.client_structure:
2764
if attr not in exclude:
2765
client_dict[attr] = getattr(client, attr)
2766
2767
clients[client.name] = client_dict
2768
del client_settings[client.name]["secret"]
2769
2298
2299
# Store client before exiting. Secrets are encrypted with key based
2300
# on what config file has. If config file is removed/edited, old
2301
# secret will thus be unrecovable.
2302
clients = []
2303
for client in tcp_server.clients.itervalues():
2304
client.encrypt_secret(client_settings[client.name]["secret"])
2305
2306
client_dict = {}
2307
2308
# A list of attributes that will not be stored when shuting down.
2309
exclude = set(("bus", "changedstate", "secret"))
2310
for name, typ in inspect.getmembers(dbus.service.Object):
2311
exclude.add(name)
2312
2313
client_dict["encrypted_secret"] = client.encrypted_secret
2314
for attr in client.client_structure:
2315
if attr not in exclude:
2316
client_dict[attr] = getattr(client, attr)
2317
2318
clients.append(client_dict)
2319
del client_settings[client.name]["secret"]
2320
2770
2321
try:
2771
with (tempfile.NamedTemporaryFile
2772
(mode='wb', suffix=".pickle", prefix='clients-',
2773
dir=os.path.dirname(stored_state_path),
2774
delete=False)) as stored_state:
2322
with os.fdopen(os.open(stored_state_path, os.O_CREAT|os.O_WRONLY|os.O_TRUNC, 0600), "wb") as stored_state:
2775
2323
pickle.dump((clients, client_settings), stored_state)
2776
tempname=stored_state.name
2777
os.rename(tempname, stored_state_path)
2778
except (IOError, OSError) as e:
2779
if not debug:
2780
try:
2781
os.remove(tempname)
2782
except NameError:
2783
pass
2784
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
2785
logger.warning("Could not save persistent state: {}"
2786
.format(os.strerror(e.errno)))
2787
else:
2788
logger.warning("Could not save persistent state:",
2789
exc_info=e)
2324
except IOError as e:
2325
logger.warning("Could not save persistant state: {0}".format(e))
2326
if e.errno != errno.ENOENT:
2790
2327
raise
2791
2328
2792
2329
# Delete all clients, and settings from config
2793
2330
while tcp_server.clients:
2794
2331
name, client = tcp_server.clients.popitem()
2812
2349
# Need to initiate checking of clients
2813
2350
if client.enabled:
2814
2351
client.init_checker()
2352
2815
2353
2816
2354
tcp_server.enable()
2817
2355
tcp_server.server_activate()
2818
2356
2819
2357
# Find out what port we got
2820
if zeroconf:
2821
service.port = tcp_server.socket.getsockname()[1]
2358
service.port = tcp_server.socket.getsockname()[1]
2822
2359
if use_ipv6:
2823
2360
logger.info("Now listening on address %r, port %d,"
2824
" flowinfo %d, scope_id %d",
2825
*tcp_server.socket.getsockname())
2361
" flowinfo %d, scope_id %d"
2362
% tcp_server.socket.getsockname())
2826
2363
else: # IPv4
2827
logger.info("Now listening on address %r, port %d",
2828
*tcp_server.socket.getsockname())
2364
logger.info("Now listening on address %r, port %d"
2365
% tcp_server.socket.getsockname())
2829
2366
2830
2367
#service.interface = tcp_server.socket.getsockname()[3]
2831
2368
2832
2369
try:
2833
if zeroconf:
2834
# From the Avahi example code
2835
try:
2836
service.activate()
2837
except dbus.exceptions.DBusException as error:
2838
logger.critical("D-Bus Exception", exc_info=error)
2839
cleanup()
2840
sys.exit(1)
2841
# End of Avahi example code
2370
# From the Avahi example code
2371
try:
2372
service.activate()
2373
except dbus.exceptions.DBusException as error:
2374
logger.critical("DBusException: %s", error)
2375
cleanup()
2376
sys.exit(1)
2377
# End of Avahi example code
2842
2378
2843
2379
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2844
2380
lambda *args, **kwargs:
2848
2384
logger.debug("Starting main loop")
2849
2385
main_loop.run()
2850
2386
except AvahiError as error:
2851
logger.critical("Avahi Error", exc_info=error)
2387
logger.critical("AvahiError: %s", error)
2852
2388
cleanup()
2853
2389
sys.exit(1)
2854
2390
except KeyboardInterrupt:
2859
2395
# Must run before the D-Bus bus name gets deregistered
2860
2396
cleanup()
2861
2397
2398
2862
2399
if __name__ == '__main__':
2863
2400
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0