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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
15
# 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
if sys.version_info.major == 2:
92
str = unicode
93
87
94
version = "1.6.9"
95
stored_state_file = "clients.pickle"
88
version = "1.4.1"
96
89
97
90
logger = logging.getLogger()
98
syslogger = None
99
100
try:
101
if_nametoindex = (ctypes.cdll.LoadLibrary
102
(ctypes.util.find_library("c"))
103
.if_nametoindex)
104
except (OSError, AttributeError):
105
def if_nametoindex(interface):
106
"Get an interface index the hard way, i.e. using fcntl()"
107
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
108
with contextlib.closing(socket.socket()) as s:
109
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
110
struct.pack(b"16s16x", interface))
111
interface_index = struct.unpack("I", ifreq[16:20])[0]
112
return interface_index
113
114
115
def initlogger(debug, level=logging.WARNING):
116
"""init logger and add loglevel"""
117
118
global syslogger
119
syslogger = (logging.handlers.SysLogHandler
120
(facility =
121
logging.handlers.SysLogHandler.LOG_DAEMON,
122
address = "/dev/log"))
123
syslogger.setFormatter(logging.Formatter
124
('Mandos [%(process)d]: %(levelname)s:'
125
' %(message)s'))
126
logger.addHandler(syslogger)
127
128
if debug:
129
console = logging.StreamHandler()
130
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
131
' [%(process)d]:'
132
' %(levelname)s:'
133
' %(message)s'))
134
logger.addHandler(console)
135
logger.setLevel(level)
136
137
138
class PGPError(Exception):
139
"""Exception if encryption/decryption fails"""
140
pass
141
142
143
class PGPEngine(object):
144
"""A simple class for OpenPGP symmetric encryption & decryption"""
145
def __init__(self):
146
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
147
self.gnupgargs = ['--batch',
148
'--home', self.tempdir,
149
'--force-mdc',
150
'--quiet',
151
'--no-use-agent']
152
153
def __enter__(self):
154
return self
155
156
def __exit__(self, exc_type, exc_value, traceback):
157
self._cleanup()
158
return False
159
160
def __del__(self):
161
self._cleanup()
162
163
def _cleanup(self):
164
if self.tempdir is not None:
165
# Delete contents of tempdir
166
for root, dirs, files in os.walk(self.tempdir,
167
topdown = False):
168
for filename in files:
169
os.remove(os.path.join(root, filename))
170
for dirname in dirs:
171
os.rmdir(os.path.join(root, dirname))
172
# Remove tempdir
173
os.rmdir(self.tempdir)
174
self.tempdir = None
175
176
def password_encode(self, password):
177
# Passphrase can not be empty and can not contain newlines or
178
# NUL bytes. So we prefix it and hex encode it.
179
encoded = b"mandos" + binascii.hexlify(password)
180
if len(encoded) > 2048:
181
# GnuPG can't handle long passwords, so encode differently
182
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
183
.replace(b"\n", b"\\n")
184
.replace(b"\0", b"\\x00"))
185
return encoded
186
187
def encrypt(self, data, password):
188
passphrase = self.password_encode(password)
189
with tempfile.NamedTemporaryFile(dir=self.tempdir
190
) as passfile:
191
passfile.write(passphrase)
192
passfile.flush()
193
proc = subprocess.Popen(['gpg', '--symmetric',
194
'--passphrase-file',
195
passfile.name]
196
+ self.gnupgargs,
197
stdin = subprocess.PIPE,
198
stdout = subprocess.PIPE,
199
stderr = subprocess.PIPE)
200
ciphertext, err = proc.communicate(input = data)
201
if proc.returncode != 0:
202
raise PGPError(err)
203
return ciphertext
204
205
def decrypt(self, data, password):
206
passphrase = self.password_encode(password)
207
with tempfile.NamedTemporaryFile(dir = self.tempdir
208
) as passfile:
209
passfile.write(passphrase)
210
passfile.flush()
211
proc = subprocess.Popen(['gpg', '--decrypt',
212
'--passphrase-file',
213
passfile.name]
214
+ self.gnupgargs,
215
stdin = subprocess.PIPE,
216
stdout = subprocess.PIPE,
217
stderr = subprocess.PIPE)
218
decrypted_plaintext, err = proc.communicate(input
219
= data)
220
if proc.returncode != 0:
221
raise PGPError(err)
222
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)
223
107
224
108
225
109
class AvahiError(Exception):
226
110
def __init__(self, value, *args, **kwargs):
227
111
self.value = value
228
return super(AvahiError, self).__init__(value, *args,
229
**kwargs)
112
super(AvahiError, self).__init__(value, *args, **kwargs)
113
def __unicode__(self):
114
return unicode(repr(self.value))
230
115
231
116
class AvahiServiceError(AvahiError):
232
117
pass
243
128
Used to optionally bind to the specified interface.
244
129
name: string; Example: 'Mandos'
245
130
type: string; Example: '_mandos._tcp'.
246
See <https://www.iana.org/assignments/service-names-port-numbers>
131
See <http://www.dns-sd.org/ServiceTypes.html>
247
132
port: integer; what port to announce
248
133
TXT: list of strings; TXT record for the service
249
134
domain: string; Domain to publish on, default to .local if empty.
255
140
server: D-Bus Server
256
141
bus: dbus.SystemBus()
257
142
"""
258
259
143
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
260
144
servicetype = None, port = None, TXT = None,
261
145
domain = "", host = "", max_renames = 32768,
274
158
self.server = None
275
159
self.bus = bus
276
160
self.entry_group_state_changed_match = None
277
278
def rename(self, remove=True):
161
def rename(self):
279
162
"""Derived from the Avahi example code"""
280
163
if self.rename_count >= self.max_renames:
281
164
logger.critical("No suitable Zeroconf service name found"
282
165
" after %i retries, exiting.",
283
166
self.rename_count)
284
167
raise AvahiServiceError("Too many renames")
285
self.name = str(self.server
286
.GetAlternativeServiceName(self.name))
287
self.rename_count += 1
168
self.name = unicode(self.server
169
.GetAlternativeServiceName(self.name))
288
170
logger.info("Changing Zeroconf service name to %r ...",
289
171
self.name)
290
if remove:
291
self.remove()
172
self.remove()
292
173
try:
293
174
self.add()
294
175
except dbus.exceptions.DBusException as error:
295
if (error.get_dbus_name()
296
== "org.freedesktop.Avahi.CollisionError"):
297
logger.info("Local Zeroconf service name collision.")
298
return self.rename(remove=False)
299
else:
300
logger.critical("D-Bus Exception", exc_info=error)
301
self.cleanup()
302
os._exit(1)
303
176
logger.critical("DBusException: %s", error)
177
self.cleanup()
178
os._exit(1)
179
self.rename_count += 1
304
180
def remove(self):
305
181
"""Derived from the Avahi example code"""
306
182
if self.entry_group_state_changed_match is not None:
308
184
self.entry_group_state_changed_match = None
309
185
if self.group is not None:
310
186
self.group.Reset()
311
312
187
def add(self):
313
188
"""Derived from the Avahi example code"""
314
189
self.remove()
331
206
dbus.UInt16(self.port),
332
207
avahi.string_array_to_txt_array(self.TXT))
333
208
self.group.Commit()
334
335
209
def entry_group_state_changed(self, state, error):
336
210
"""Derived from the Avahi example code"""
337
211
logger.debug("Avahi entry group state change: %i", state)
343
217
self.rename()
344
218
elif state == avahi.ENTRY_GROUP_FAILURE:
345
219
logger.critical("Avahi: Error in group state changed %s",
346
str(error))
347
raise AvahiGroupError("State changed: {!s}"
348
.format(error))
349
220
unicode(error))
221
raise AvahiGroupError("State changed: %s"
222
% unicode(error))
350
223
def cleanup(self):
351
224
"""Derived from the Avahi example code"""
352
225
if self.group is not None:
353
226
try:
354
227
self.group.Free()
355
228
except (dbus.exceptions.UnknownMethodException,
356
dbus.exceptions.DBusException):
229
dbus.exceptions.DBusException) as e:
357
230
pass
358
231
self.group = None
359
232
self.remove()
360
361
233
def server_state_changed(self, state, error=None):
362
234
"""Derived from the Avahi example code"""
363
235
logger.debug("Avahi server state change: %i", state)
382
254
logger.debug("Unknown state: %r", state)
383
255
else:
384
256
logger.debug("Unknown state: %r: %r", state, error)
385
386
257
def activate(self):
387
258
"""Derived from the Avahi example code"""
388
259
if self.server is None:
395
266
self.server_state_changed)
396
267
self.server_state_changed(self.server.GetState())
397
268
398
399
269
class AvahiServiceToSyslog(AvahiService):
400
def rename(self, *args, **kwargs):
270
def rename(self):
401
271
"""Add the new name to the syslog messages"""
402
ret = AvahiService.rename(self, *args, **kwargs)
272
ret = AvahiService.rename(self)
403
273
syslogger.setFormatter(logging.Formatter
404
('Mandos ({}) [%(process)d]:'
405
' %(levelname)s: %(message)s'
406
.format(self.name)))
274
('Mandos (%s) [%%(process)d]:'
275
' %%(levelname)s: %%(message)s'
276
% self.name))
407
277
return ret
408
278
409
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
410
285
class Client(object):
411
286
"""A representation of a client host served by this server.
412
287
413
288
Attributes:
414
approved: bool(); 'None' if not yet approved/disapproved
289
_approved: bool(); 'None' if not yet approved/disapproved
415
290
approval_delay: datetime.timedelta(); Time to wait for approval
416
291
approval_duration: datetime.timedelta(); Duration of one approval
417
292
checker: subprocess.Popen(); a running checker process used
435
310
interval: datetime.timedelta(); How often to start a new checker
436
311
last_approval_request: datetime.datetime(); (UTC) or None
437
312
last_checked_ok: datetime.datetime(); (UTC) or None
438
last_checker_status: integer between 0 and 255 reflecting exit
439
status of last checker. -1 reflects crashed
440
checker, -2 means no checker completed yet.
441
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)
442
317
name: string; from the config file, used in log messages and
443
318
D-Bus identifiers
444
319
secret: bytestring; sent verbatim (over TLS) to client
445
320
timeout: datetime.timedelta(); How long from last_checked_ok
446
321
until this client is disabled
447
extended_timeout: extra long timeout when secret has been sent
322
extended_timeout: extra long timeout when password has been sent
448
323
runtime_expansions: Allowed attributes for runtime expansion.
449
324
expires: datetime.datetime(); time (UTC) when a client will be
450
325
disabled, or None
451
server_settings: The server_settings dict from main()
452
326
"""
453
327
454
328
runtime_expansions = ("approval_delay", "approval_duration",
455
"created", "enabled", "expires",
456
"fingerprint", "host", "interval",
457
"last_approval_request", "last_checked_ok",
329
"created", "enabled", "fingerprint",
330
"host", "interval", "last_checked_ok",
458
331
"last_enabled", "name", "timeout")
459
client_defaults = { "timeout": "PT5M",
460
"extended_timeout": "PT15M",
461
"interval": "PT2M",
462
"checker": "fping -q -- %%(host)s",
463
"host": "",
464
"approval_delay": "PT0S",
465
"approval_duration": "PT1S",
466
"approved_by_default": "True",
467
"enabled": "True",
468
}
469
470
@staticmethod
471
def config_parser(config):
472
"""Construct a new dict of client settings of this form:
473
{ client_name: {setting_name: value, ...}, ...}
474
with exceptions for any special settings as defined above.
475
NOTE: Must be a pure function. Must return the same result
476
value given the same arguments.
477
"""
478
settings = {}
479
for client_name in config.sections():
480
section = dict(config.items(client_name))
481
client = settings[client_name] = {}
482
483
client["host"] = section["host"]
484
# Reformat values from string types to Python types
485
client["approved_by_default"] = config.getboolean(
486
client_name, "approved_by_default")
487
client["enabled"] = config.getboolean(client_name,
488
"enabled")
489
490
# Uppercase and remove spaces from fingerprint for later
491
# comparison purposes with return value from the
492
# fingerprint() function
493
client["fingerprint"] = (section["fingerprint"].upper()
494
.replace(" ", ""))
495
if "secret" in section:
496
client["secret"] = section["secret"].decode("base64")
497
elif "secfile" in section:
498
with open(os.path.expanduser(os.path.expandvars
499
(section["secfile"])),
500
"rb") as secfile:
501
client["secret"] = secfile.read()
502
else:
503
raise TypeError("No secret or secfile for section {}"
504
.format(section))
505
client["timeout"] = string_to_delta(section["timeout"])
506
client["extended_timeout"] = string_to_delta(
507
section["extended_timeout"])
508
client["interval"] = string_to_delta(section["interval"])
509
client["approval_delay"] = string_to_delta(
510
section["approval_delay"])
511
client["approval_duration"] = string_to_delta(
512
section["approval_duration"])
513
client["checker_command"] = section["checker"]
514
client["last_approval_request"] = None
515
client["last_checked_ok"] = None
516
client["last_checker_status"] = -2
517
518
return settings
519
520
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."""
521
352
self.name = name
522
if server_settings is None:
523
server_settings = {}
524
self.server_settings = server_settings
525
# adding all client settings
526
for setting, value in settings.items():
527
setattr(self, setting, value)
528
529
if self.enabled:
530
if not hasattr(self, "last_enabled"):
531
self.last_enabled = datetime.datetime.utcnow()
532
if not hasattr(self, "expires"):
533
self.expires = (datetime.datetime.utcnow()
534
+ self.timeout)
535
else:
536
self.last_enabled = None
537
self.expires = None
538
353
if config is None:
354
config = {}
539
355
logger.debug("Creating client %r", self.name)
356
# Uppercase and remove spaces from fingerprint for later
357
# comparison purposes with return value from the fingerprint()
358
# function
359
self.fingerprint = (config["fingerprint"].upper()
360
.replace(" ", ""))
540
361
logger.debug(" Fingerprint: %s", self.fingerprint)
541
self.created = settings.get("created",
542
datetime.datetime.utcnow())
543
544
# 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"])
545
383
self.checker = None
546
384
self.checker_initiator_tag = None
547
385
self.disable_initiator_tag = None
386
self.expires = datetime.datetime.utcnow() + self.timeout
548
387
self.checker_callback_tag = None
388
self.checker_command = config["checker"]
549
389
self.current_checker_command = None
550
self.approved = None
390
self._approved = None
391
self.approved_by_default = config.get("approved_by_default",
392
True)
551
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"])
552
398
self.changedstate = (multiprocessing_manager
553
399
.Condition(multiprocessing_manager
554
400
.Lock()))
555
self.client_structure = [attr for attr in
556
self.__dict__.iterkeys()
557
if not attr.startswith("_")]
401
self.client_structure = [attr for attr in self.__dict__.iterkeys() if not attr.startswith("_")]
558
402
self.client_structure.append("client_structure")
559
403
404
560
405
for name, t in inspect.getmembers(type(self),
561
lambda obj:
562
isinstance(obj,
563
property)):
406
lambda obj: isinstance(obj, property)):
564
407
if not name.startswith("_"):
565
408
self.client_structure.append(name)
566
409
574
417
if getattr(self, "enabled", False):
575
418
# Already enabled
576
419
return
420
self.send_changedstate()
577
421
self.expires = datetime.datetime.utcnow() + self.timeout
578
422
self.enabled = True
579
423
self.last_enabled = datetime.datetime.utcnow()
580
424
self.init_checker()
581
self.send_changedstate()
582
425
583
426
def disable(self, quiet=True):
584
427
"""Disable this client."""
585
428
if not getattr(self, "enabled", False):
586
429
return False
587
430
if not quiet:
431
self.send_changedstate()
432
if not quiet:
588
433
logger.info("Disabling client %s", self.name)
589
if getattr(self, "disable_initiator_tag", None) is not None:
434
if getattr(self, "disable_initiator_tag", False):
590
435
gobject.source_remove(self.disable_initiator_tag)
591
436
self.disable_initiator_tag = None
592
437
self.expires = None
593
if getattr(self, "checker_initiator_tag", None) is not None:
438
if getattr(self, "checker_initiator_tag", False):
594
439
gobject.source_remove(self.checker_initiator_tag)
595
440
self.checker_initiator_tag = None
596
441
self.stop_checker()
597
442
self.enabled = False
598
if not quiet:
599
self.send_changedstate()
600
443
# Do not run this again if called by a gobject.timeout_add
601
444
return False
602
445
603
446
def __del__(self):
604
447
self.disable()
605
448
606
449
def init_checker(self):
607
450
# Schedule a new checker to be started an 'interval' from now,
608
451
# and every interval from then on.
609
if self.checker_initiator_tag is not None:
610
gobject.source_remove(self.checker_initiator_tag)
611
452
self.checker_initiator_tag = (gobject.timeout_add
612
(int(self.interval
613
.total_seconds() * 1000),
453
(self.interval_milliseconds(),
614
454
self.start_checker))
615
455
# Schedule a disable() when 'timeout' has passed
616
if self.disable_initiator_tag is not None:
617
gobject.source_remove(self.disable_initiator_tag)
618
456
self.disable_initiator_tag = (gobject.timeout_add
619
(int(self.timeout
620
.total_seconds() * 1000),
621
self.disable))
457
(self.timeout_milliseconds(),
458
self.disable))
622
459
# Also start a new checker *right now*.
623
460
self.start_checker()
624
461
462
625
463
def checker_callback(self, pid, condition, command):
626
464
"""The checker has completed, so take appropriate actions."""
627
465
self.checker_callback_tag = None
628
466
self.checker = None
629
467
if os.WIFEXITED(condition):
630
self.last_checker_status = os.WEXITSTATUS(condition)
468
self.last_checker_status = os.WEXITSTATUS(condition)
631
469
if self.last_checker_status == 0:
632
470
logger.info("Checker for %(name)s succeeded",
633
471
vars(self))
640
478
logger.warning("Checker for %(name)s crashed?",
641
479
vars(self))
642
480
643
def checked_ok(self):
644
"""Assert that the client has been seen, alive and well."""
645
self.last_checked_ok = datetime.datetime.utcnow()
646
self.last_checker_status = 0
647
self.bump_timeout()
648
649
def bump_timeout(self, timeout=None):
650
"""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
"""
651
487
if timeout is None:
652
488
timeout = self.timeout
489
self.last_checked_ok = datetime.datetime.utcnow()
653
490
if self.disable_initiator_tag is not None:
654
491
gobject.source_remove(self.disable_initiator_tag)
655
self.disable_initiator_tag = None
656
492
if getattr(self, "enabled", False):
657
493
self.disable_initiator_tag = (gobject.timeout_add
658
(int(timeout.total_seconds()
659
* 1000), self.disable))
494
(_timedelta_to_milliseconds
495
(timeout), self.disable))
660
496
self.expires = datetime.datetime.utcnow() + timeout
661
497
662
498
def need_approval(self):
668
504
If a checker already exists, leave it running and do
669
505
nothing."""
670
506
# The reason for not killing a running checker is that if we
671
# did that, and if a checker (for some reason) started running
672
# slowly and taking more than 'interval' time, then the client
673
# would inevitably timeout, since no checker would get a
674
# 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
675
511
# checkers alone, the checker would have to take more time
676
512
# than 'timeout' for the client to be disabled, which is as it
677
513
# should be.
679
515
# If a checker exists, make sure it is not a zombie
680
516
try:
681
517
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
682
except AttributeError:
683
pass
684
except OSError as error:
685
if error.errno != errno.ECHILD:
686
raise
518
except (AttributeError, OSError) as error:
519
if (isinstance(error, OSError)
520
and error.errno != errno.ECHILD):
521
raise error
687
522
else:
688
523
if pid:
689
524
logger.warning("Checker was a zombie")
692
527
self.current_checker_command)
693
528
# Start a new checker if needed
694
529
if self.checker is None:
695
# Escape attributes for the shell
696
escaped_attrs = { attr:
697
re.escape(str(getattr(self, attr)))
698
for attr in self.runtime_expansions }
699
530
try:
700
command = self.checker_command % escaped_attrs
701
except TypeError as error:
702
logger.error('Could not format string "%s"',
703
self.checker_command, exc_info=error)
704
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
705
549
self.current_checker_command = command
706
550
try:
707
551
logger.info("Starting checker %r for %s",
710
554
# in normal mode, that is already done by daemon(),
711
555
# and in debug mode we don't want to. (Stdin is
712
556
# always replaced by /dev/null.)
713
# The exception is when not debugging but nevertheless
714
# running in the foreground; use the previously
715
# created wnull.
716
popen_args = {}
717
if (not self.server_settings["debug"]
718
and self.server_settings["foreground"]):
719
popen_args.update({"stdout": wnull,
720
"stderr": wnull })
721
557
self.checker = subprocess.Popen(command,
722
558
close_fds=True,
723
shell=True, cwd="/",
724
**popen_args)
725
except OSError as error:
726
logger.error("Failed to start subprocess",
727
exc_info=error)
728
return True
729
self.checker_callback_tag = (gobject.child_watch_add
730
(self.checker.pid,
731
self.checker_callback,
732
data=command))
733
# The checker may have completed before the gobject
734
# watch was added. Check for this.
735
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.
736
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)
737
570
except OSError as error:
738
if error.errno == errno.ECHILD:
739
# This should never happen
740
logger.error("Child process vanished",
741
exc_info=error)
742
return True
743
raise
744
if pid:
745
gobject.source_remove(self.checker_callback_tag)
746
self.checker_callback(pid, status, command)
571
logger.error("Failed to start subprocess: %s",
572
error)
747
573
# Re-run this periodically if run by gobject.timeout_add
748
574
return True
749
575
756
582
return
757
583
logger.debug("Stopping checker for %(name)s", vars(self))
758
584
try:
759
self.checker.terminate()
585
os.kill(self.checker.pid, signal.SIGTERM)
760
586
#time.sleep(0.5)
761
587
#if self.checker.poll() is None:
762
# self.checker.kill()
588
# os.kill(self.checker.pid, signal.SIGKILL)
763
589
except OSError as error:
764
590
if error.errno != errno.ESRCH: # No such process
765
591
raise
766
592
self.checker = None
767
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
768
640
769
641
def dbus_service_property(dbus_interface, signature="v",
770
642
access="readwrite", byte_arrays=False):
782
654
# "Set" method, so we fail early here:
783
655
if byte_arrays and signature != "ay":
784
656
raise ValueError("Byte arrays not supported for non-'ay'"
785
" signature {!r}".format(signature))
657
" signature %r" % signature)
786
658
def decorator(func):
787
659
func._dbus_is_property = True
788
660
func._dbus_interface = dbus_interface
796
668
return decorator
797
669
798
670
799
def dbus_interface_annotations(dbus_interface):
800
"""Decorator for marking functions returning interface annotations
801
802
Usage:
803
804
@dbus_interface_annotations("org.example.Interface")
805
def _foo(self): # Function name does not matter
806
return {"org.freedesktop.DBus.Deprecated": "true",
807
"org.freedesktop.DBus.Property.EmitsChangedSignal":
808
"false"}
809
"""
810
def decorator(func):
811
func._dbus_is_interface = True
812
func._dbus_interface = dbus_interface
813
func._dbus_name = dbus_interface
814
return func
815
return decorator
816
817
818
def dbus_annotations(annotations):
819
"""Decorator to annotate D-Bus methods, signals or properties
820
Usage:
821
822
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
823
"org.freedesktop.DBus.Property."
824
"EmitsChangedSignal": "false"})
825
@dbus_service_property("org.example.Interface", signature="b",
826
access="r")
827
def Property_dbus_property(self):
828
return dbus.Boolean(False)
829
"""
830
def decorator(func):
831
func._dbus_annotations = annotations
832
return func
833
return decorator
834
835
836
671
class DBusPropertyException(dbus.exceptions.DBusException):
837
672
"""A base class for D-Bus property-related exceptions
838
673
"""
839
pass
674
def __unicode__(self):
675
return unicode(str(self))
676
840
677
841
678
class DBusPropertyAccessException(DBusPropertyException):
842
679
"""A property's access permissions disallows an operation.
859
696
"""
860
697
861
698
@staticmethod
862
def _is_dbus_thing(thing):
863
"""Returns a function testing if an attribute is a D-Bus thing
864
865
If called like _is_dbus_thing("method") it returns a function
866
suitable for use as predicate to inspect.getmembers().
867
"""
868
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
869
False)
699
def _is_dbus_property(obj):
700
return getattr(obj, "_dbus_is_property", False)
870
701
871
def _get_all_dbus_things(self, thing):
702
def _get_all_dbus_properties(self):
872
703
"""Returns a generator of (name, attribute) pairs
873
704
"""
874
return ((getattr(athing.__get__(self), "_dbus_name",
875
name),
876
athing.__get__(self))
705
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
877
706
for cls in self.__class__.__mro__
878
for name, athing in
879
inspect.getmembers(cls,
880
self._is_dbus_thing(thing)))
707
for name, prop in
708
inspect.getmembers(cls, self._is_dbus_property))
881
709
882
710
def _get_dbus_property(self, interface_name, property_name):
883
711
"""Returns a bound method if one exists which is a D-Bus
885
713
"""
886
714
for cls in self.__class__.__mro__:
887
715
for name, value in (inspect.getmembers
888
(cls,
889
self._is_dbus_thing("property"))):
716
(cls, self._is_dbus_property)):
890
717
if (value._dbus_name == property_name
891
718
and value._dbus_interface == interface_name):
892
719
return value.__get__(self)
920
747
# The byte_arrays option is not supported yet on
921
748
# signatures other than "ay".
922
749
if prop._dbus_signature != "ay":
923
raise ValueError("Byte arrays not supported for non-"
924
"'ay' signature {!r}"
925
.format(prop._dbus_signature))
926
value = dbus.ByteArray(b''.join(chr(byte)
927
for byte in value))
750
raise ValueError
751
value = dbus.ByteArray(''.join(unichr(byte)
752
for byte in value))
928
753
prop(value)
929
754
930
755
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
935
760
936
761
Note: Will not include properties with access="write".
937
762
"""
938
properties = {}
939
for name, prop in self._get_all_dbus_things("property"):
763
all = {}
764
for name, prop in self._get_all_dbus_properties():
940
765
if (interface_name
941
766
and interface_name != prop._dbus_interface):
942
767
# Interface non-empty but did not match
946
771
continue
947
772
value = prop()
948
773
if not hasattr(value, "variant_level"):
949
properties[name] = value
774
all[name] = value
950
775
continue
951
properties[name] = type(value)(value, variant_level=
952
value.variant_level+1)
953
return dbus.Dictionary(properties, signature="sv")
954
955
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
956
def PropertiesChanged(self, interface_name, changed_properties,
957
invalidated_properties):
958
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
959
standard.
960
"""
961
pass
776
all[name] = type(value)(value, variant_level=
777
value.variant_level+1)
778
return dbus.Dictionary(all, signature="sv")
962
779
963
780
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
964
781
out_signature="s",
965
782
path_keyword='object_path',
966
783
connection_keyword='connection')
967
784
def Introspect(self, object_path, connection):
968
"""Overloading of standard D-Bus method.
969
970
Inserts property tags and interface annotation tags.
785
"""Standard D-Bus method, overloaded to insert property tags.
971
786
"""
972
787
xmlstring = dbus.service.Object.Introspect(self, object_path,
973
788
connection)
980
795
e.setAttribute("access", prop._dbus_access)
981
796
return e
982
797
for if_tag in document.getElementsByTagName("interface"):
983
# Add property tags
984
798
for tag in (make_tag(document, name, prop)
985
799
for name, prop
986
in self._get_all_dbus_things("property")
800
in self._get_all_dbus_properties()
987
801
if prop._dbus_interface
988
802
== if_tag.getAttribute("name")):
989
803
if_tag.appendChild(tag)
990
# Add annotation tags
991
for typ in ("method", "signal", "property"):
992
for tag in if_tag.getElementsByTagName(typ):
993
annots = dict()
994
for name, prop in (self.
995
_get_all_dbus_things(typ)):
996
if (name == tag.getAttribute("name")
997
and prop._dbus_interface
998
== if_tag.getAttribute("name")):
999
annots.update(getattr
1000
(prop,
1001
"_dbus_annotations",
1002
{}))
1003
for name, value in annots.items():
1004
ann_tag = document.createElement(
1005
"annotation")
1006
ann_tag.setAttribute("name", name)
1007
ann_tag.setAttribute("value", value)
1008
tag.appendChild(ann_tag)
1009
# Add interface annotation tags
1010
for annotation, value in dict(
1011
itertools.chain.from_iterable(
1012
annotations().items()
1013
for name, annotations in
1014
self._get_all_dbus_things("interface")
1015
if name == if_tag.getAttribute("name")
1016
)).items():
1017
ann_tag = document.createElement("annotation")
1018
ann_tag.setAttribute("name", annotation)
1019
ann_tag.setAttribute("value", value)
1020
if_tag.appendChild(ann_tag)
1021
804
# Add the names to the return values for the
1022
805
# "org.freedesktop.DBus.Properties" methods
1023
806
if (if_tag.getAttribute("name")
1038
821
except (AttributeError, xml.dom.DOMException,
1039
822
xml.parsers.expat.ExpatError) as error:
1040
823
logger.error("Failed to override Introspection method",
1041
exc_info=error)
824
error)
1042
825
return xmlstring
1043
826
1044
827
1045
def datetime_to_dbus(dt, variant_level=0):
828
def datetime_to_dbus (dt, variant_level=0):
1046
829
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1047
830
if dt is None:
1048
831
return dbus.String("", variant_level = variant_level)
1049
832
return dbus.String(dt.isoformat(),
1050
833
variant_level=variant_level)
1051
834
1052
1053
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1054
"""A class decorator; applied to a subclass of
1055
dbus.service.Object, it will add alternate D-Bus attributes with
1056
interface names according to the "alt_interface_names" mapping.
1057
Usage:
1058
1059
@alternate_dbus_interfaces({"org.example.Interface":
1060
"net.example.AlternateInterface"})
1061
class SampleDBusObject(dbus.service.Object):
1062
@dbus.service.method("org.example.Interface")
1063
def SampleDBusMethod():
1064
pass
1065
1066
The above "SampleDBusMethod" on "SampleDBusObject" will be
1067
reachable via two interfaces: "org.example.Interface" and
1068
"net.example.AlternateInterface", the latter of which will have
1069
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1070
"true", unless "deprecate" is passed with a False value.
1071
1072
This works for methods and signals, and also for D-Bus properties
1073
(from DBusObjectWithProperties) and interfaces (from the
1074
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.
1075
839
"""
1076
def wrapper(cls):
1077
for orig_interface_name, alt_interface_name in (
1078
alt_interface_names.items()):
1079
attr = {}
1080
interface_names = set()
1081
# Go though all attributes of the class
1082
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):
1083
847
# Ignore non-D-Bus attributes, and D-Bus attributes
1084
848
# with the wrong interface name
1085
849
if (not hasattr(attribute, "_dbus_interface")
1086
850
or not attribute._dbus_interface
1087
.startswith(orig_interface_name)):
851
.startswith("se.recompile.Mandos")):
1088
852
continue
1089
853
# Create an alternate D-Bus interface name based on
1090
854
# the current name
1091
855
alt_interface = (attribute._dbus_interface
1092
.replace(orig_interface_name,
1093
alt_interface_name))
1094
interface_names.add(alt_interface)
856
.replace("se.recompile.Mandos",
857
"se.bsnet.fukt.Mandos"))
1095
858
# Is this a D-Bus signal?
1096
859
if getattr(attribute, "_dbus_is_signal", False):
1097
# Extract the original non-method undecorated
1098
# function by black magic
860
# Extract the original non-method function by
861
# black magic
1099
862
nonmethod_func = (dict(
1100
863
zip(attribute.func_code.co_freevars,
1101
864
attribute.__closure__))["func"]
1112
875
nonmethod_func.func_name,
1113
876
nonmethod_func.func_defaults,
1114
877
nonmethod_func.func_closure)))
1115
# Copy annotations, if any
1116
try:
1117
new_function._dbus_annotations = (
1118
dict(attribute._dbus_annotations))
1119
except AttributeError:
1120
pass
1121
878
# Define a creator of a function to call both the
1122
# original and alternate functions, so both the
1123
# original and alternate signals gets sent when
1124
# the function is called
879
# old and new functions, so both the old and new
880
# signals gets sent when the function is called
1125
881
def fixscope(func1, func2):
1126
882
"""This function is a scope container to pass
1127
883
func1 and func2 to the "call_both" function
1134
890
return call_both
1135
891
# Create the "call_both" function and add it to
1136
892
# the class
1137
attr[attrname] = fixscope(attribute, new_function)
893
attr[attrname] = fixscope(attribute,
894
new_function)
1138
895
# Is this a D-Bus method?
1139
896
elif getattr(attribute, "_dbus_is_method", False):
1140
897
# Create a new, but exactly alike, function
1151
908
attribute.func_name,
1152
909
attribute.func_defaults,
1153
910
attribute.func_closure)))
1154
# Copy annotations, if any
1155
try:
1156
attr[attrname]._dbus_annotations = (
1157
dict(attribute._dbus_annotations))
1158
except AttributeError:
1159
pass
1160
911
# Is this a D-Bus property?
1161
912
elif getattr(attribute, "_dbus_is_property", False):
1162
913
# Create a new, but exactly alike, function
1176
927
attribute.func_name,
1177
928
attribute.func_defaults,
1178
929
attribute.func_closure)))
1179
# Copy annotations, if any
1180
try:
1181
attr[attrname]._dbus_annotations = (
1182
dict(attribute._dbus_annotations))
1183
except AttributeError:
1184
pass
1185
# Is this a D-Bus interface?
1186
elif getattr(attribute, "_dbus_is_interface", False):
1187
# Create a new, but exactly alike, function
1188
# object. Decorate it to be a new D-Bus interface
1189
# with the alternate D-Bus interface name. Add it
1190
# to the class.
1191
attr[attrname] = (dbus_interface_annotations
1192
(alt_interface)
1193
(types.FunctionType
1194
(attribute.func_code,
1195
attribute.func_globals,
1196
attribute.func_name,
1197
attribute.func_defaults,
1198
attribute.func_closure)))
1199
if deprecate:
1200
# Deprecate all alternate interfaces
1201
iname="_AlternateDBusNames_interface_annotation{}"
1202
for interface_name in interface_names:
1203
@dbus_interface_annotations(interface_name)
1204
def func(self):
1205
return { "org.freedesktop.DBus.Deprecated":
1206
"true" }
1207
# Find an unused name
1208
for aname in (iname.format(i)
1209
for i in itertools.count()):
1210
if aname not in attr:
1211
attr[aname] = func
1212
break
1213
if interface_names:
1214
# Replace the class with a new subclass of it with
1215
# methods, signals, etc. as created above.
1216
cls = type(b"{}Alternate".format(cls.__name__),
1217
(cls,), attr)
1218
return cls
1219
return wrapper
1220
1221
1222
@alternate_dbus_interfaces({"se.recompile.Mandos":
1223
"se.bsnet.fukt.Mandos"})
930
return type.__new__(mcs, name, bases, attr)
931
1224
932
class ClientDBus(Client, DBusObjectWithProperties):
1225
933
"""A Client class using D-Bus
1226
934
1232
940
runtime_expansions = (Client.runtime_expansions
1233
941
+ ("dbus_object_path",))
1234
942
1235
_interface = "se.recompile.Mandos.Client"
1236
1237
943
# dbus.service.Object doesn't use super(), so we can't either.
1238
944
1239
945
def __init__(self, bus = None, *args, **kwargs):
1240
946
self.bus = bus
1241
947
Client.__init__(self, *args, **kwargs)
948
949
self._approvals_pending = 0
1242
950
# Only now, when this client is initialized, can it show up on
1243
951
# the D-Bus
1244
client_object_name = str(self.name).translate(
952
client_object_name = unicode(self.name).translate(
1245
953
{ord("."): ord("_"),
1246
954
ord("-"): ord("_")})
1247
955
self.dbus_object_path = (dbus.ObjectPath
1248
956
("/clients/" + client_object_name))
1249
957
DBusObjectWithProperties.__init__(self, self.bus,
1250
958
self.dbus_object_path)
1251
959
1252
960
def notifychangeproperty(transform_func,
1253
961
dbus_name, type_func=lambda x: x,
1254
variant_level=1, invalidate_only=False,
1255
_interface=_interface):
962
variant_level=1):
1256
963
""" Modify a variable so that it's a property which announces
1257
964
its changes to DBus.
1258
965
1259
966
transform_fun: Function that takes a value and a variant_level
1260
967
and transforms it to a D-Bus type.
1261
968
dbus_name: D-Bus name of the variable
1263
970
to the D-Bus. Default: no transform
1264
971
variant_level: D-Bus variant level. Default: 1
1265
972
"""
1266
attrname = "_{}".format(dbus_name)
973
attrname = "_{0}".format(dbus_name)
1267
974
def setter(self, value):
1268
975
if hasattr(self, "dbus_object_path"):
1269
976
if (not hasattr(self, attrname) or
1270
977
type_func(getattr(self, attrname, None))
1271
978
!= type_func(value)):
1272
if invalidate_only:
1273
self.PropertiesChanged(_interface,
1274
dbus.Dictionary(),
1275
dbus.Array
1276
((dbus_name,)))
1277
else:
1278
dbus_value = transform_func(type_func(value),
1279
variant_level
1280
=variant_level)
1281
self.PropertyChanged(dbus.String(dbus_name),
1282
dbus_value)
1283
self.PropertiesChanged(_interface,
1284
dbus.Dictionary({
1285
dbus.String(dbus_name):
1286
dbus_value }), dbus.Array())
979
dbus_value = transform_func(type_func(value),
980
variant_level
981
=variant_level)
982
self.PropertyChanged(dbus.String(dbus_name),
983
dbus_value)
1287
984
setattr(self, attrname, value)
1288
985
1289
986
return property(lambda self: getattr(self, attrname), setter)
1290
987
988
1291
989
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1292
990
approvals_pending = notifychangeproperty(dbus.Boolean,
1293
991
"ApprovalPending",
1300
998
checker is not None)
1301
999
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1302
1000
"LastCheckedOK")
1303
last_checker_status = notifychangeproperty(dbus.Int16,
1304
"LastCheckerStatus")
1305
1001
last_approval_request = notifychangeproperty(
1306
1002
datetime_to_dbus, "LastApprovalRequest")
1307
1003
approved_by_default = notifychangeproperty(dbus.Boolean,
1308
1004
"ApprovedByDefault")
1309
approval_delay = notifychangeproperty(dbus.UInt64,
1005
approval_delay = notifychangeproperty(dbus.UInt16,
1310
1006
"ApprovalDelay",
1311
1007
type_func =
1312
lambda td: td.total_seconds()
1313
* 1000)
1008
_timedelta_to_milliseconds)
1314
1009
approval_duration = notifychangeproperty(
1315
dbus.UInt64, "ApprovalDuration",
1316
type_func = lambda td: td.total_seconds() * 1000)
1010
dbus.UInt16, "ApprovalDuration",
1011
type_func = _timedelta_to_milliseconds)
1317
1012
host = notifychangeproperty(dbus.String, "Host")
1318
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1319
type_func = lambda td:
1320
td.total_seconds() * 1000)
1013
timeout = notifychangeproperty(dbus.UInt16, "Timeout",
1014
type_func =
1015
_timedelta_to_milliseconds)
1321
1016
extended_timeout = notifychangeproperty(
1322
dbus.UInt64, "ExtendedTimeout",
1323
type_func = lambda td: td.total_seconds() * 1000)
1324
interval = notifychangeproperty(dbus.UInt64,
1017
dbus.UInt16, "ExtendedTimeout",
1018
type_func = _timedelta_to_milliseconds)
1019
interval = notifychangeproperty(dbus.UInt16,
1325
1020
"Interval",
1326
1021
type_func =
1327
lambda td: td.total_seconds()
1328
* 1000)
1022
_timedelta_to_milliseconds)
1329
1023
checker_command = notifychangeproperty(dbus.String, "Checker")
1330
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1331
invalidate_only=True)
1332
1024
1333
1025
del notifychangeproperty
1334
1026
1361
1053
*args, **kwargs)
1362
1054
1363
1055
def start_checker(self, *args, **kwargs):
1364
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
1365
1061
r = Client.start_checker(self, *args, **kwargs)
1366
1062
# Only if new checker process was started
1367
1063
if (self.checker is not None
1371
1067
return r
1372
1068
1373
1069
def _reset_approved(self):
1374
self.approved = None
1070
self._approved = None
1375
1071
return False
1376
1072
1377
1073
def approve(self, value=True):
1378
self.approved = value
1379
gobject.timeout_add(int(self.approval_duration.total_seconds()
1380
* 1000), self._reset_approved)
1381
1074
self.send_changedstate()
1075
self._approved = value
1076
gobject.timeout_add(_timedelta_to_milliseconds
1077
(self.approval_duration),
1078
self._reset_approved)
1079
1382
1080
1383
1081
## D-Bus methods, signals & properties
1384
1385
## Interfaces
1082
_interface = "se.recompile.Mandos.Client"
1386
1083
1387
1084
## Signals
1388
1085
1399
1096
pass
1400
1097
1401
1098
# PropertyChanged - signal
1402
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1403
1099
@dbus.service.signal(_interface, signature="sv")
1404
1100
def PropertyChanged(self, property, value):
1405
1101
"D-Bus signal"
1481
1177
access="readwrite")
1482
1178
def ApprovalDelay_dbus_property(self, value=None):
1483
1179
if value is None: # get
1484
return dbus.UInt64(self.approval_delay.total_seconds()
1485
* 1000)
1180
return dbus.UInt64(self.approval_delay_milliseconds())
1486
1181
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1487
1182
1488
1183
# ApprovalDuration - property
1490
1185
access="readwrite")
1491
1186
def ApprovalDuration_dbus_property(self, value=None):
1492
1187
if value is None: # get
1493
return dbus.UInt64(self.approval_duration.total_seconds()
1494
* 1000)
1188
return dbus.UInt64(_timedelta_to_milliseconds(
1189
self.approval_duration))
1495
1190
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1496
1191
1497
1192
# Name - property
1510
1205
def Host_dbus_property(self, value=None):
1511
1206
if value is None: # get
1512
1207
return dbus.String(self.host)
1513
self.host = str(value)
1208
self.host = value
1514
1209
1515
1210
# Created - property
1516
1211
@dbus_service_property(_interface, signature="s", access="read")
1517
1212
def Created_dbus_property(self):
1518
return datetime_to_dbus(self.created)
1213
return dbus.String(datetime_to_dbus(self.created))
1519
1214
1520
1215
# LastEnabled - property
1521
1216
@dbus_service_property(_interface, signature="s", access="read")
1542
1237
return
1543
1238
return datetime_to_dbus(self.last_checked_ok)
1544
1239
1545
# LastCheckerStatus - property
1546
@dbus_service_property(_interface, signature="n",
1547
access="read")
1548
def LastCheckerStatus_dbus_property(self):
1549
return dbus.Int16(self.last_checker_status)
1550
1551
1240
# Expires - property
1552
1241
@dbus_service_property(_interface, signature="s", access="read")
1553
1242
def Expires_dbus_property(self):
1563
1252
access="readwrite")
1564
1253
def Timeout_dbus_property(self, value=None):
1565
1254
if value is None: # get
1566
return dbus.UInt64(self.timeout.total_seconds() * 1000)
1567
old_timeout = self.timeout
1255
return dbus.UInt64(self.timeout_milliseconds())
1568
1256
self.timeout = datetime.timedelta(0, 0, 0, value)
1569
# Reschedule disabling
1570
if self.enabled:
1571
now = datetime.datetime.utcnow()
1572
self.expires += self.timeout - old_timeout
1573
if self.expires <= now:
1574
# The timeout has passed
1575
self.disable()
1576
else:
1577
if (getattr(self, "disable_initiator_tag", None)
1578
is None):
1579
return
1580
gobject.source_remove(self.disable_initiator_tag)
1581
self.disable_initiator_tag = (
1582
gobject.timeout_add(
1583
int((self.expires - now).total_seconds()
1584
* 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))
1585
1277
1586
1278
# ExtendedTimeout - property
1587
1279
@dbus_service_property(_interface, signature="t",
1588
1280
access="readwrite")
1589
1281
def ExtendedTimeout_dbus_property(self, value=None):
1590
1282
if value is None: # get
1591
return dbus.UInt64(self.extended_timeout.total_seconds()
1592
* 1000)
1283
return dbus.UInt64(self.extended_timeout_milliseconds())
1593
1284
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1594
1285
1595
1286
# Interval - property
1597
1288
access="readwrite")
1598
1289
def Interval_dbus_property(self, value=None):
1599
1290
if value is None: # get
1600
return dbus.UInt64(self.interval.total_seconds() * 1000)
1291
return dbus.UInt64(self.interval_milliseconds())
1601
1292
self.interval = datetime.timedelta(0, 0, 0, value)
1602
1293
if getattr(self, "checker_initiator_tag", None) is None:
1603
1294
return
1604
if self.enabled:
1605
# Reschedule checker run
1606
gobject.source_remove(self.checker_initiator_tag)
1607
self.checker_initiator_tag = (gobject.timeout_add
1608
(value, self.start_checker))
1609
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
1610
1300
1611
1301
# Checker - property
1612
1302
@dbus_service_property(_interface, signature="s",
1614
1304
def Checker_dbus_property(self, value=None):
1615
1305
if value is None: # get
1616
1306
return dbus.String(self.checker_command)
1617
self.checker_command = str(value)
1307
self.checker_command = value
1618
1308
1619
1309
# CheckerRunning - property
1620
1310
@dbus_service_property(_interface, signature="b",
1636
1326
@dbus_service_property(_interface, signature="ay",
1637
1327
access="write", byte_arrays=True)
1638
1328
def Secret_dbus_property(self, value):
1639
self.secret = bytes(value)
1329
self.secret = str(value)
1640
1330
1641
1331
del _interface
1642
1332
1649
1339
raise KeyError()
1650
1340
1651
1341
def __getattribute__(self, name):
1652
if name == '_pipe':
1342
if(name == '_pipe'):
1653
1343
return super(ProxyClient, self).__getattribute__(name)
1654
1344
self._pipe.send(('getattr', name))
1655
1345
data = self._pipe.recv()
1662
1352
return func
1663
1353
1664
1354
def __setattr__(self, name, value):
1665
if name == '_pipe':
1355
if(name == '_pipe'):
1666
1356
return super(ProxyClient, self).__setattr__(name, value)
1667
1357
self._pipe.send(('setattr', name, value))
1668
1358
1359
class ClientDBusTransitional(ClientDBus):
1360
__metaclass__ = AlternateDBusNamesMetaclass
1669
1361
1670
1362
class ClientHandler(socketserver.BaseRequestHandler, object):
1671
1363
"""A class to handle client connections.
1676
1368
def handle(self):
1677
1369
with contextlib.closing(self.server.child_pipe) as child_pipe:
1678
1370
logger.info("TCP connection from: %s",
1679
str(self.client_address))
1371
unicode(self.client_address))
1680
1372
logger.debug("Pipe FD: %d",
1681
1373
self.server.child_pipe.fileno())
1682
1374
1708
1400
logger.debug("Protocol version: %r", line)
1709
1401
try:
1710
1402
if int(line.strip().split()[0]) > 1:
1711
raise RuntimeError(line)
1403
raise RuntimeError
1712
1404
except (ValueError, IndexError, RuntimeError) as error:
1713
1405
logger.error("Unknown protocol version: %s", error)
1714
1406
return
1754
1446
client.Rejected("Disabled")
1755
1447
return
1756
1448
1757
if client.approved or not client.approval_delay:
1449
if client._approved or not client.approval_delay:
1758
1450
#We are approved or approval is disabled
1759
1451
break
1760
elif client.approved is None:
1452
elif client._approved is None:
1761
1453
logger.info("Client %s needs approval",
1762
1454
client.name)
1763
1455
if self.server.use_dbus:
1764
1456
# Emit D-Bus signal
1765
1457
client.NeedApproval(
1766
client.approval_delay.total_seconds()
1767
* 1000, client.approved_by_default)
1458
client.approval_delay_milliseconds(),
1459
client.approved_by_default)
1768
1460
else:
1769
1461
logger.warning("Client %s was not approved",
1770
1462
client.name)
1776
1468
#wait until timeout or approved
1777
1469
time = datetime.datetime.now()
1778
1470
client.changedstate.acquire()
1779
client.changedstate.wait(delay.total_seconds())
1471
(client.changedstate.wait
1472
(float(client._timedelta_to_milliseconds(delay)
1473
/ 1000)))
1780
1474
client.changedstate.release()
1781
1475
time2 = datetime.datetime.now()
1782
1476
if (time2 - time) >= delay:
1798
1492
try:
1799
1493
sent = session.send(client.secret[sent_size:])
1800
1494
except gnutls.errors.GNUTLSError as error:
1801
logger.warning("gnutls send failed",
1802
exc_info=error)
1495
logger.warning("gnutls send failed")
1803
1496
return
1804
1497
logger.debug("Sent: %d, remaining: %d",
1805
1498
sent, len(client.secret)
1808
1501
1809
1502
logger.info("Sending secret to %s", client.name)
1810
1503
# bump the timeout using extended_timeout
1811
client.bump_timeout(client.extended_timeout)
1504
client.checked_ok(client.extended_timeout)
1812
1505
if self.server.use_dbus:
1813
1506
# Emit D-Bus signal
1814
1507
client.GotSecret()
1819
1512
try:
1820
1513
session.bye()
1821
1514
except gnutls.errors.GNUTLSError as error:
1822
logger.warning("GnuTLS bye failed",
1823
exc_info=error)
1515
logger.warning("GnuTLS bye failed")
1824
1516
1825
1517
@staticmethod
1826
1518
def peer_certificate(session):
1882
1574
# Convert the buffer to a Python bytestring
1883
1575
fpr = ctypes.string_at(buf, buf_len.value)
1884
1576
# Convert the bytestring to hexadecimal notation
1885
hex_fpr = binascii.hexlify(fpr).upper()
1577
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
1886
1578
return hex_fpr
1887
1579
1888
1580
1891
1583
def sub_process_main(self, request, address):
1892
1584
try:
1893
1585
self.finish_request(request, address)
1894
except Exception:
1586
except:
1895
1587
self.handle_error(request, address)
1896
1588
self.close_request(request)
1897
1589
1898
1590
def process_request(self, request, address):
1899
1591
"""Start a new process to process the request."""
1900
1592
proc = multiprocessing.Process(target = self.sub_process_main,
1901
args = (request, address))
1593
args = (request,
1594
address))
1902
1595
proc.start()
1903
1596
return proc
1904
1597
1919
1612
1920
1613
def add_pipe(self, parent_pipe, proc):
1921
1614
"""Dummy function; override as necessary"""
1922
raise NotImplementedError()
1615
raise NotImplementedError
1923
1616
1924
1617
1925
1618
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1932
1625
use_ipv6: Boolean; to use IPv6 or not
1933
1626
"""
1934
1627
def __init__(self, server_address, RequestHandlerClass,
1935
interface=None, use_ipv6=True, socketfd=None):
1936
"""If socketfd is set, use that file descriptor instead of
1937
creating a new one with socket.socket().
1938
"""
1628
interface=None, use_ipv6=True):
1939
1629
self.interface = interface
1940
1630
if use_ipv6:
1941
1631
self.address_family = socket.AF_INET6
1942
if socketfd is not None:
1943
# Save the file descriptor
1944
self.socketfd = socketfd
1945
# Save the original socket.socket() function
1946
self.socket_socket = socket.socket
1947
# To implement --socket, we monkey patch socket.socket.
1948
#
1949
# (When socketserver.TCPServer is a new-style class, we
1950
# could make self.socket into a property instead of monkey
1951
# patching socket.socket.)
1952
#
1953
# Create a one-time-only replacement for socket.socket()
1954
@functools.wraps(socket.socket)
1955
def socket_wrapper(*args, **kwargs):
1956
# Restore original function so subsequent calls are
1957
# not affected.
1958
socket.socket = self.socket_socket
1959
del self.socket_socket
1960
# This time only, return a new socket object from the
1961
# saved file descriptor.
1962
return socket.fromfd(self.socketfd, *args, **kwargs)
1963
# Replace socket.socket() function with wrapper
1964
socket.socket = socket_wrapper
1965
# The socketserver.TCPServer.__init__ will call
1966
# socket.socket(), which might be our replacement,
1967
# socket_wrapper(), if socketfd was set.
1968
1632
socketserver.TCPServer.__init__(self, server_address,
1969
1633
RequestHandlerClass)
1970
1971
1634
def server_bind(self):
1972
1635
"""This overrides the normal server_bind() function
1973
1636
to bind to an interface if one was specified, and also NOT to
1981
1644
try:
1982
1645
self.socket.setsockopt(socket.SOL_SOCKET,
1983
1646
SO_BINDTODEVICE,
1984
(self.interface + "\0")
1985
.encode("utf-8"))
1647
str(self.interface
1648
+ '\0'))
1986
1649
except socket.error as error:
1987
if error.errno == errno.EPERM:
1988
logger.error("No permission to bind to"
1989
" interface %s", self.interface)
1990
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:
1991
1655
logger.error("SO_BINDTODEVICE not available;"
1992
1656
" cannot bind to interface %s",
1993
1657
self.interface)
1994
elif error.errno == errno.ENODEV:
1995
logger.error("Interface %s does not exist,"
1996
" cannot bind", self.interface)
1997
1658
else:
1998
1659
raise
1999
1660
# Only bind(2) the socket if we really need to.
2002
1663
if self.address_family == socket.AF_INET6:
2003
1664
any_address = "::" # in6addr_any
2004
1665
else:
2005
any_address = "0.0.0.0" # INADDR_ANY
1666
any_address = socket.INADDR_ANY
2006
1667
self.server_address = (any_address,
2007
1668
self.server_address[1])
2008
1669
elif not self.server_address[1]:
2029
1690
"""
2030
1691
def __init__(self, server_address, RequestHandlerClass,
2031
1692
interface=None, use_ipv6=True, clients=None,
2032
gnutls_priority=None, use_dbus=True, socketfd=None):
1693
gnutls_priority=None, use_dbus=True):
2033
1694
self.enabled = False
2034
1695
self.clients = clients
2035
1696
if self.clients is None:
2039
1700
IPv6_TCPServer.__init__(self, server_address,
2040
1701
RequestHandlerClass,
2041
1702
interface = interface,
2042
use_ipv6 = use_ipv6,
2043
socketfd = socketfd)
1703
use_ipv6 = use_ipv6)
2044
1704
def server_activate(self):
2045
1705
if self.enabled:
2046
1706
return socketserver.TCPServer.server_activate(self)
2059
1719
2060
1720
def handle_ipc(self, source, condition, parent_pipe=None,
2061
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)
2062
1736
# error, or the other end of multiprocessing.Pipe has closed
2063
if condition & (gobject.IO_ERR | gobject.IO_HUP):
1737
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2064
1738
# Wait for other process to exit
2065
1739
proc.join()
2066
1740
return False
2124
1798
return True
2125
1799
2126
1800
2127
def rfc3339_duration_to_delta(duration):
2128
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2129
2130
>>> rfc3339_duration_to_delta("P7D")
2131
datetime.timedelta(7)
2132
>>> rfc3339_duration_to_delta("PT60S")
2133
datetime.timedelta(0, 60)
2134
>>> rfc3339_duration_to_delta("PT60M")
2135
datetime.timedelta(0, 3600)
2136
>>> rfc3339_duration_to_delta("PT24H")
2137
datetime.timedelta(1)
2138
>>> rfc3339_duration_to_delta("P1W")
2139
datetime.timedelta(7)
2140
>>> rfc3339_duration_to_delta("PT5M30S")
2141
datetime.timedelta(0, 330)
2142
>>> rfc3339_duration_to_delta("P1DT3M20S")
2143
datetime.timedelta(1, 200)
2144
"""
2145
2146
# Parsing an RFC 3339 duration with regular expressions is not
2147
# possible - there would have to be multiple places for the same
2148
# values, like seconds. The current code, while more esoteric, is
2149
# cleaner without depending on a parsing library. If Python had a
2150
# built-in library for parsing we would use it, but we'd like to
2151
# avoid excessive use of external libraries.
2152
2153
# New type for defining tokens, syntax, and semantics all-in-one
2154
Token = collections.namedtuple("Token",
2155
("regexp", # To match token; if
2156
# "value" is not None,
2157
# must have a "group"
2158
# containing digits
2159
"value", # datetime.timedelta or
2160
# None
2161
"followers")) # Tokens valid after
2162
# this token
2163
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2164
# the "duration" ABNF definition in RFC 3339, Appendix A.
2165
token_end = Token(re.compile(r"$"), None, frozenset())
2166
token_second = Token(re.compile(r"(\d+)S"),
2167
datetime.timedelta(seconds=1),
2168
frozenset((token_end,)))
2169
token_minute = Token(re.compile(r"(\d+)M"),
2170
datetime.timedelta(minutes=1),
2171
frozenset((token_second, token_end)))
2172
token_hour = Token(re.compile(r"(\d+)H"),
2173
datetime.timedelta(hours=1),
2174
frozenset((token_minute, token_end)))
2175
token_time = Token(re.compile(r"T"),
2176
None,
2177
frozenset((token_hour, token_minute,
2178
token_second)))
2179
token_day = Token(re.compile(r"(\d+)D"),
2180
datetime.timedelta(days=1),
2181
frozenset((token_time, token_end)))
2182
token_month = Token(re.compile(r"(\d+)M"),
2183
datetime.timedelta(weeks=4),
2184
frozenset((token_day, token_end)))
2185
token_year = Token(re.compile(r"(\d+)Y"),
2186
datetime.timedelta(weeks=52),
2187
frozenset((token_month, token_end)))
2188
token_week = Token(re.compile(r"(\d+)W"),
2189
datetime.timedelta(weeks=1),
2190
frozenset((token_end,)))
2191
token_duration = Token(re.compile(r"P"), None,
2192
frozenset((token_year, token_month,
2193
token_day, token_time,
2194
token_week)))
2195
# Define starting values
2196
value = datetime.timedelta() # Value so far
2197
found_token = None
2198
followers = frozenset((token_duration,)) # Following valid tokens
2199
s = duration # String left to parse
2200
# Loop until end token is found
2201
while found_token is not token_end:
2202
# Search for any currently valid tokens
2203
for token in followers:
2204
match = token.regexp.match(s)
2205
if match is not None:
2206
# Token found
2207
if token.value is not None:
2208
# Value found, parse digits
2209
factor = int(match.group(1), 10)
2210
# Add to value so far
2211
value += factor * token.value
2212
# Strip token from string
2213
s = token.regexp.sub("", s, 1)
2214
# Go to found token
2215
found_token = token
2216
# Set valid next tokens
2217
followers = found_token.followers
2218
break
2219
else:
2220
# No currently valid tokens were found
2221
raise ValueError("Invalid RFC 3339 duration")
2222
# End token found
2223
return value
2224
2225
2226
1801
def string_to_delta(interval):
2227
1802
"""Parse a string and return a datetime.timedelta
2228
1803
2239
1814
>>> string_to_delta('5m 30s')
2240
1815
datetime.timedelta(0, 330)
2241
1816
"""
2242
2243
try:
2244
return rfc3339_duration_to_delta(interval)
2245
except ValueError:
2246
pass
2247
2248
1817
timevalue = datetime.timedelta(0)
2249
1818
for s in interval.split():
2250
1819
try:
2251
suffix = s[-1]
1820
suffix = unicode(s[-1])
2252
1821
value = int(s[:-1])
2253
1822
if suffix == "d":
2254
1823
delta = datetime.timedelta(value)
2261
1830
elif suffix == "w":
2262
1831
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2263
1832
else:
2264
raise ValueError("Unknown suffix {!r}"
2265
.format(suffix))
2266
except IndexError as e:
1833
raise ValueError("Unknown suffix %r" % suffix)
1834
except (ValueError, IndexError) as e:
2267
1835
raise ValueError(*(e.args))
2268
1836
timevalue += delta
2269
1837
return timevalue
2270
1838
2271
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
2272
1864
def daemon(nochdir = False, noclose = False):
2273
1865
"""See daemon(3). Standard BSD Unix function.
2274
1866
2282
1874
sys.exit()
2283
1875
if not noclose:
2284
1876
# Close all standard open file descriptors
2285
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1877
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2286
1878
if not stat.S_ISCHR(os.fstat(null).st_mode):
2287
raise OSError(errno.ENODEV, "{} not a character device"
2288
.format(os.devnull))
1879
raise OSError(errno.ENODEV,
1880
"%s not a character device"
1881
% os.path.devnull)
2289
1882
os.dup2(null, sys.stdin.fileno())
2290
1883
os.dup2(null, sys.stdout.fileno())
2291
1884
os.dup2(null, sys.stderr.fileno())
2300
1893
2301
1894
parser = argparse.ArgumentParser()
2302
1895
parser.add_argument("-v", "--version", action="version",
2303
version = "%(prog)s {}".format(version),
1896
version = "%%(prog)s %s" % version,
2304
1897
help="show version number and exit")
2305
1898
parser.add_argument("-i", "--interface", metavar="IF",
2306
1899
help="Bind to interface IF")
2312
1905
help="Run self-test")
2313
1906
parser.add_argument("--debug", action="store_true",
2314
1907
help="Debug mode; run in foreground and log"
2315
" to terminal", default=None)
1908
" to terminal")
2316
1909
parser.add_argument("--debuglevel", metavar="LEVEL",
2317
1910
help="Debug level for stdout output")
2318
1911
parser.add_argument("--priority", help="GnuTLS"
2325
1918
" files")
2326
1919
parser.add_argument("--no-dbus", action="store_false",
2327
1920
dest="use_dbus", help="Do not provide D-Bus"
2328
" system bus interface", default=None)
1921
" system bus interface")
2329
1922
parser.add_argument("--no-ipv6", action="store_false",
2330
dest="use_ipv6", help="Do not use IPv6",
2331
default=None)
1923
dest="use_ipv6", help="Do not use IPv6")
2332
1924
parser.add_argument("--no-restore", action="store_false",
2333
dest="restore", help="Do not restore stored"
2334
" state", default=None)
2335
parser.add_argument("--socket", type=int,
2336
help="Specify a file descriptor to a network"
2337
" socket to use instead of creating one")
2338
parser.add_argument("--statedir", metavar="DIR",
2339
help="Directory to save/restore state in")
2340
parser.add_argument("--foreground", action="store_true",
2341
help="Run in foreground", default=None)
2342
parser.add_argument("--no-zeroconf", action="store_false",
2343
dest="zeroconf", help="Do not use Zeroconf",
2344
default=None)
2345
1925
dest="restore", help="Do not restore stored state",
1926
default=True)
1927
2346
1928
options = parser.parse_args()
2347
1929
2348
1930
if options.check:
2349
1931
import doctest
2350
fail_count, test_count = doctest.testmod()
2351
sys.exit(os.EX_OK if fail_count == 0 else 1)
1932
doctest.testmod()
1933
sys.exit()
2352
1934
2353
1935
# Default values for config file for server-global settings
2354
1936
server_defaults = { "interface": "",
2356
1938
"port": "",
2357
1939
"debug": "False",
2358
1940
"priority":
2359
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2360
":+SIGN-RSA-SHA224:+SIGN-RSA-RMD160",
1941
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2361
1942
"servicename": "Mandos",
2362
1943
"use_dbus": "True",
2363
1944
"use_ipv6": "True",
2364
1945
"debuglevel": "",
2365
"restore": "True",
2366
"socket": "",
2367
"statedir": "/var/lib/mandos",
2368
"foreground": "False",
2369
"zeroconf": "True",
2370
1946
}
2371
1947
2372
1948
# Parse config file for server-global settings
2377
1953
# Convert the SafeConfigParser object to a dict
2378
1954
server_settings = server_config.defaults()
2379
1955
# Use the appropriate methods on the non-string config options
2380
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
1956
for option in ("debug", "use_dbus", "use_ipv6"):
2381
1957
server_settings[option] = server_config.getboolean("DEFAULT",
2382
1958
option)
2383
1959
if server_settings["port"]:
2384
1960
server_settings["port"] = server_config.getint("DEFAULT",
2385
1961
"port")
2386
if server_settings["socket"]:
2387
server_settings["socket"] = server_config.getint("DEFAULT",
2388
"socket")
2389
# Later, stdin will, and stdout and stderr might, be dup'ed
2390
# over with an opened os.devnull. But we don't want this to
2391
# happen with a supplied network socket.
2392
if 0 <= server_settings["socket"] <= 2:
2393
server_settings["socket"] = os.dup(server_settings
2394
["socket"])
2395
1962
del server_config
2396
1963
2397
1964
# Override the settings from the config file with command line
2398
1965
# options, if set.
2399
1966
for option in ("interface", "address", "port", "debug",
2400
1967
"priority", "servicename", "configdir",
2401
"use_dbus", "use_ipv6", "debuglevel", "restore",
2402
"statedir", "socket", "foreground", "zeroconf"):
1968
"use_dbus", "use_ipv6", "debuglevel", "restore"):
2403
1969
value = getattr(options, option)
2404
1970
if value is not None:
2405
1971
server_settings[option] = value
2406
1972
del options
2407
1973
# Force all strings to be unicode
2408
1974
for option in server_settings.keys():
2409
if isinstance(server_settings[option], bytes):
2410
server_settings[option] = (server_settings[option]
2411
.decode("utf-8"))
2412
# Force all boolean options to be boolean
2413
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2414
"foreground", "zeroconf"):
2415
server_settings[option] = bool(server_settings[option])
2416
# Debug implies foreground
2417
if server_settings["debug"]:
2418
server_settings["foreground"] = True
1975
if type(server_settings[option]) is str:
1976
server_settings[option] = unicode(server_settings[option])
2419
1977
# Now we have our good server settings in "server_settings"
2420
1978
2421
1979
##################################################################
2422
1980
2423
if (not server_settings["zeroconf"] and
2424
not (server_settings["port"]
2425
or server_settings["socket"] != "")):
2426
parser.error("Needs port or socket to work without"
2427
" Zeroconf")
2428
2429
1981
# For convenience
2430
1982
debug = server_settings["debug"]
2431
1983
debuglevel = server_settings["debuglevel"]
2432
1984
use_dbus = server_settings["use_dbus"]
2433
1985
use_ipv6 = server_settings["use_ipv6"]
2434
stored_state_path = os.path.join(server_settings["statedir"],
2435
stored_state_file)
2436
foreground = server_settings["foreground"]
2437
zeroconf = server_settings["zeroconf"]
2438
2439
if debug:
2440
initlogger(debug, logging.DEBUG)
2441
else:
2442
if not debuglevel:
2443
initlogger(debug)
2444
else:
2445
level = getattr(logging, debuglevel.upper())
2446
initlogger(debug, level)
2447
1986
2448
1987
if server_settings["servicename"] != "Mandos":
2449
1988
syslogger.setFormatter(logging.Formatter
2450
('Mandos ({}) [%(process)d]:'
2451
' %(levelname)s: %(message)s'
2452
.format(server_settings
2453
["servicename"])))
1989
('Mandos (%s) [%%(process)d]:'
1990
' %%(levelname)s: %%(message)s'
1991
% server_settings["servicename"]))
2454
1992
2455
1993
# Parse config file with clients
2456
client_config = configparser.SafeConfigParser(Client
2457
.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)
2458
2003
client_config.read(os.path.join(server_settings["configdir"],
2459
2004
"clients.conf"))
2460
2005
2461
2006
global mandos_dbus_service
2462
2007
mandos_dbus_service = None
2463
2008
2464
socketfd = None
2465
if server_settings["socket"] != "":
2466
socketfd = server_settings["socket"]
2467
2009
tcp_server = MandosServer((server_settings["address"],
2468
2010
server_settings["port"]),
2469
2011
ClientHandler,
2472
2014
use_ipv6=use_ipv6,
2473
2015
gnutls_priority=
2474
2016
server_settings["priority"],
2475
use_dbus=use_dbus,
2476
socketfd=socketfd)
2477
if not foreground:
2478
pidfilename = "/run/mandos.pid"
2479
if not os.path.isdir("/run/."):
2480
pidfilename = "/var/run/mandos.pid"
2481
pidfile = None
2017
use_dbus=use_dbus)
2018
if not debug:
2019
pidfilename = "/var/run/mandos.pid"
2482
2020
try:
2483
2021
pidfile = open(pidfilename, "w")
2484
except IOError as e:
2485
logger.error("Could not open file %r", pidfilename,
2486
exc_info=e)
2022
except IOError:
2023
logger.error("Could not open file %r", pidfilename)
2487
2024
2488
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:
2489
2029
try:
2490
uid = pwd.getpwnam(name).pw_uid
2491
gid = pwd.getpwnam(name).pw_gid
2492
break
2030
uid = pwd.getpwnam("mandos").pw_uid
2031
gid = pwd.getpwnam("mandos").pw_gid
2493
2032
except KeyError:
2494
continue
2495
else:
2496
uid = 65534
2497
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
2498
2039
try:
2499
2040
os.setgid(gid)
2500
2041
os.setuid(uid)
2501
2042
except OSError as error:
2502
if error.errno != errno.EPERM:
2503
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)
2504
2051
2505
2052
if debug:
2053
logger.setLevel(logging.DEBUG)
2506
2054
# Enable all possible GnuTLS debugging
2507
2055
2508
2056
# "Use a log level over 10 to enable all debugging options."
2517
2065
.gnutls_global_set_log_function(debug_gnutls))
2518
2066
2519
2067
# Redirect stdin so all checkers get /dev/null
2520
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2068
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2521
2069
os.dup2(null, sys.stdin.fileno())
2522
2070
if null > 2:
2523
2071
os.close(null)
2072
else:
2073
# No console logging
2074
logger.removeHandler(console)
2524
2075
2525
2076
# Need to fork before connecting to D-Bus
2526
if not foreground:
2077
if not debug:
2527
2078
# Close all input and output, do double fork, etc.
2528
2079
daemon()
2529
2080
2530
# multiprocessing will use threads, so before we use gobject we
2531
# need to inform gobject that threads will be used.
2532
gobject.threads_init()
2533
2534
2081
global main_loop
2535
2082
# From the Avahi example code
2536
DBusGMainLoop(set_as_default=True)
2083
DBusGMainLoop(set_as_default=True )
2537
2084
main_loop = gobject.MainLoop()
2538
2085
bus = dbus.SystemBus()
2539
2086
# End of Avahi example code
2545
2092
("se.bsnet.fukt.Mandos", bus,
2546
2093
do_not_queue=True))
2547
2094
except dbus.exceptions.NameExistsException as e:
2548
logger.error("Disabling D-Bus:", exc_info=e)
2095
logger.error(unicode(e) + ", disabling D-Bus")
2549
2096
use_dbus = False
2550
2097
server_settings["use_dbus"] = False
2551
2098
tcp_server.use_dbus = False
2552
if zeroconf:
2553
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2554
service = AvahiServiceToSyslog(name =
2555
server_settings["servicename"],
2556
servicetype = "_mandos._tcp",
2557
protocol = protocol, bus = bus)
2558
if server_settings["interface"]:
2559
service.interface = (if_nametoindex
2560
(server_settings["interface"]
2561
.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"])))
2562
2107
2563
2108
global multiprocessing_manager
2564
2109
multiprocessing_manager = multiprocessing.Manager()
2565
2110
2566
2111
client_class = Client
2567
2112
if use_dbus:
2568
client_class = functools.partial(ClientDBus, bus = bus)
2569
2570
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
2571
2133
old_client_settings = {}
2572
clients_data = {}
2573
2574
# This is used to redirect stdout and stderr for checker processes
2575
global wnull
2576
wnull = open(os.devnull, "w") # A writable /dev/null
2577
# Only used if server is running in foreground but not in debug
2578
# mode
2579
if debug or not foreground:
2580
wnull.close()
2581
2582
# Get client data and settings from last running state.
2134
clients_data = []
2135
2136
# Get client data and settings from last running state.
2583
2137
if server_settings["restore"]:
2584
2138
try:
2585
2139
with open(stored_state_path, "rb") as stored_state:
2586
clients_data, old_client_settings = (pickle.load
2587
(stored_state))
2140
clients_data, old_client_settings = pickle.load(stored_state)
2588
2141
os.remove(stored_state_path)
2589
2142
except IOError as e:
2590
if e.errno == errno.ENOENT:
2591
logger.warning("Could not load persistent state: {}"
2592
.format(os.strerror(e.errno)))
2593
else:
2594
logger.critical("Could not load persistent state:",
2595
exc_info=e)
2143
logger.warning("Could not load persistant state: {0}".format(e))
2144
if e.errno != errno.ENOENT:
2596
2145
raise
2597
except EOFError as e:
2598
logger.warning("Could not load persistent state: "
2599
"EOFError:", exc_info=e)
2600
2601
with PGPEngine() as pgp:
2602
for client_name, client in clients_data.items():
2603
# Skip removed clients
2604
if client_name not in client_settings:
2605
continue
2606
2607
# Decide which value to use after restoring saved state.
2608
# We have three different values: Old config file,
2609
# new config file, and saved state.
2610
# New config value takes precedence if it differs from old
2611
# config value, otherwise use saved state.
2612
for name, value in client_settings[client_name].items():
2613
try:
2614
# For each value in new config, check if it
2615
# differs from the old config value (Except for
2616
# the "secret" attribute)
2617
if (name != "secret" and
2618
value != old_client_settings[client_name]
2619
[name]):
2620
client[name] = value
2621
except KeyError:
2622
pass
2623
2624
# Clients who has passed its expire date can still be
2625
# enabled if its last checker was successful. Clients
2626
# whose checker succeeded before we stored its state is
2627
# assumed to have successfully run all checkers during
2628
# downtime.
2629
if client["enabled"]:
2630
if datetime.datetime.utcnow() >= client["expires"]:
2631
if not client["last_checked_ok"]:
2632
logger.warning(
2633
"disabling client {} - Client never "
2634
"performed a successful checker"
2635
.format(client_name))
2636
client["enabled"] = False
2637
elif client["last_checker_status"] != 0:
2638
logger.warning(
2639
"disabling client {} - Client last"
2640
" checker failed with error code {}"
2641
.format(client_name,
2642
client["last_checker_status"]))
2643
client["enabled"] = False
2644
else:
2645
client["expires"] = (datetime.datetime
2646
.utcnow()
2647
+ client["timeout"])
2648
logger.debug("Last checker succeeded,"
2649
" keeping {} enabled"
2650
.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():
2651
2156
try:
2652
client["secret"] = (
2653
pgp.decrypt(client["encrypted_secret"],
2654
client_settings[client_name]
2655
["secret"]))
2656
except PGPError:
2657
# If decryption fails, we use secret from new settings
2658
logger.debug("Failed to decrypt {} old secret"
2659
.format(client_name))
2660
client["secret"] = (
2661
client_settings[client_name]["secret"])
2662
2663
# Add/remove clients based on new changes made to config
2664
for client_name in (set(old_client_settings)
2665
- set(client_settings)):
2666
del clients_data[client_name]
2667
for client_name in (set(client_settings)
2668
- set(old_client_settings)):
2669
clients_data[client_name] = client_settings[client_name]
2670
2671
# Create all client objects
2672
for client_name, client in clients_data.items():
2673
tcp_server.clients[client_name] = client_class(
2674
name = client_name, settings = client,
2675
server_settings = server_settings)
2676
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
2677
2211
if not tcp_server.clients:
2678
2212
logger.warning("No clients defined")
2679
2680
if not foreground:
2681
if pidfile is not None:
2682
try:
2683
with pidfile:
2684
pid = os.getpid()
2685
pidfile.write("{}\n".format(pid).encode("utf-8"))
2686
except IOError:
2687
logger.error("Could not write to file %r with PID %d",
2688
pidfilename, pid)
2689
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
2690
2226
del pidfilename
2227
2228
signal.signal(signal.SIGINT, signal.SIG_IGN)
2691
2229
2692
2230
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2693
2231
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2694
2232
2695
2233
if use_dbus:
2696
@alternate_dbus_interfaces({"se.recompile.Mandos":
2697
"se.bsnet.fukt.Mandos"})
2698
class MandosDBusService(DBusObjectWithProperties):
2234
class MandosDBusService(dbus.service.Object):
2699
2235
"""A D-Bus proxy object"""
2700
2236
def __init__(self):
2701
2237
dbus.service.Object.__init__(self, bus, "/")
2702
2238
_interface = "se.recompile.Mandos"
2703
2239
2704
@dbus_interface_annotations(_interface)
2705
def _foo(self):
2706
return { "org.freedesktop.DBus.Property"
2707
".EmitsChangedSignal":
2708
"false"}
2709
2710
2240
@dbus.service.signal(_interface, signature="o")
2711
2241
def ClientAdded(self, objpath):
2712
2242
"D-Bus signal"
2734
2264
def GetAllClientsWithProperties(self):
2735
2265
"D-Bus method"
2736
2266
return dbus.Dictionary(
2737
{ c.dbus_object_path: c.GetAll("")
2738
for c in tcp_server.clients.itervalues() },
2267
((c.dbus_object_path, c.GetAll(""))
2268
for c in tcp_server.clients.itervalues()),
2739
2269
signature="oa{sv}")
2740
2270
2741
2271
@dbus.service.method(_interface, in_signature="o")
2754
2284
2755
2285
del _interface
2756
2286
2757
mandos_dbus_service = MandosDBusService()
2287
class MandosDBusServiceTransitional(MandosDBusService):
2288
__metaclass__ = AlternateDBusNamesMetaclass
2289
mandos_dbus_service = MandosDBusServiceTransitional()
2758
2290
2759
2291
def cleanup():
2760
2292
"Cleanup function; run on exit"
2761
if zeroconf:
2762
service.cleanup()
2293
service.cleanup()
2763
2294
2764
2295
multiprocessing.active_children()
2765
wnull.close()
2766
2296
if not (tcp_server.clients or client_settings):
2767
2297
return
2768
2769
# Store client before exiting. Secrets are encrypted with key
2770
# based on what config file has. If config file is
2771
# removed/edited, old secret will thus be unrecovable.
2772
clients = {}
2773
with PGPEngine() as pgp:
2774
for client in tcp_server.clients.itervalues():
2775
key = client_settings[client.name]["secret"]
2776
client.encrypted_secret = pgp.encrypt(client.secret,
2777
key)
2778
client_dict = {}
2779
2780
# A list of attributes that can not be pickled
2781
# + secret.
2782
exclude = { "bus", "changedstate", "secret",
2783
"checker", "server_settings" }
2784
for name, typ in (inspect.getmembers
2785
(dbus.service.Object)):
2786
exclude.add(name)
2787
2788
client_dict["encrypted_secret"] = (client
2789
.encrypted_secret)
2790
for attr in client.client_structure:
2791
if attr not in exclude:
2792
client_dict[attr] = getattr(client, attr)
2793
2794
clients[client.name] = client_dict
2795
del client_settings[client.name]["secret"]
2796
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
2797
2321
try:
2798
with (tempfile.NamedTemporaryFile
2799
(mode='wb', suffix=".pickle", prefix='clients-',
2800
dir=os.path.dirname(stored_state_path),
2801
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:
2802
2323
pickle.dump((clients, client_settings), stored_state)
2803
tempname=stored_state.name
2804
os.rename(tempname, stored_state_path)
2805
except (IOError, OSError) as e:
2806
if not debug:
2807
try:
2808
os.remove(tempname)
2809
except NameError:
2810
pass
2811
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
2812
logger.warning("Could not save persistent state: {}"
2813
.format(os.strerror(e.errno)))
2814
else:
2815
logger.warning("Could not save persistent state:",
2816
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:
2817
2327
raise
2818
2328
2819
2329
# Delete all clients, and settings from config
2820
2330
while tcp_server.clients:
2821
2331
name, client = tcp_server.clients.popitem()
2839
2349
# Need to initiate checking of clients
2840
2350
if client.enabled:
2841
2351
client.init_checker()
2352
2842
2353
2843
2354
tcp_server.enable()
2844
2355
tcp_server.server_activate()
2845
2356
2846
2357
# Find out what port we got
2847
if zeroconf:
2848
service.port = tcp_server.socket.getsockname()[1]
2358
service.port = tcp_server.socket.getsockname()[1]
2849
2359
if use_ipv6:
2850
2360
logger.info("Now listening on address %r, port %d,"
2851
" flowinfo %d, scope_id %d",
2852
*tcp_server.socket.getsockname())
2361
" flowinfo %d, scope_id %d"
2362
% tcp_server.socket.getsockname())
2853
2363
else: # IPv4
2854
logger.info("Now listening on address %r, port %d",
2855
*tcp_server.socket.getsockname())
2364
logger.info("Now listening on address %r, port %d"
2365
% tcp_server.socket.getsockname())
2856
2366
2857
2367
#service.interface = tcp_server.socket.getsockname()[3]
2858
2368
2859
2369
try:
2860
if zeroconf:
2861
# From the Avahi example code
2862
try:
2863
service.activate()
2864
except dbus.exceptions.DBusException as error:
2865
logger.critical("D-Bus Exception", exc_info=error)
2866
cleanup()
2867
sys.exit(1)
2868
# 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
2869
2378
2870
2379
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2871
2380
lambda *args, **kwargs:
2875
2384
logger.debug("Starting main loop")
2876
2385
main_loop.run()
2877
2386
except AvahiError as error:
2878
logger.critical("Avahi Error", exc_info=error)
2387
logger.critical("AvahiError: %s", error)
2879
2388
cleanup()
2880
2389
sys.exit(1)
2881
2390
except KeyboardInterrupt:
2886
2395
# Must run before the D-Bus bus name gets deregistered
2887
2396
cleanup()
2888
2397
2398
2889
2399
if __name__ == '__main__':
2890
2400
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0