To get this branch, use:
bzr branch
http://bzr.recompile.se/loggerhead/mandos/trunk
« back to all changes in this revision
Viewing changes to mandos
- browse files at revision 502.1.1
- compare with another revision
- download diff
- download tarball
- view history from revision 502.1.1
- Committer: Teddy Hogeborn
- Date: 2011-09-26 21:06:14 UTC
- mto: This revision was merged to the branch mainline in revision 503.
- Revision ID: teddy@fukt.bsnet.se-20110926210614-tvxkpb6xfhkq3gc3
* mandos: White space fixes only.
- 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
28
28
# along with this program. If not, see
29
29
# <http://www.gnu.org/licenses/>.
30
30
#
31
# Contact the authors at <mandos@recompile.se>.
31
# Contact the authors at <mandos@fukt.bsnet.se>.
32
32
#
33
33
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
64
62
import functools
65
63
import cPickle as pickle
66
64
import multiprocessing
67
import types
68
import binascii
69
import tempfile
70
import itertools
71
import collections
72
65
73
66
import dbus
74
67
import dbus.service
88
81
except ImportError:
89
82
SO_BINDTODEVICE = None
90
83
91
if sys.version_info.major == 2:
92
str = unicode
93
94
version = "1.6.9"
95
stored_state_file = "clients.pickle"
96
97
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
223
84
85
version = "1.3.1"
86
87
#logger = logging.getLogger('mandos')
88
logger = logging.Logger('mandos')
89
syslogger = (logging.handlers.SysLogHandler
90
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
91
address = str("/dev/log")))
92
syslogger.setFormatter(logging.Formatter
93
('Mandos [%(process)d]: %(levelname)s:'
94
' %(message)s'))
95
logger.addHandler(syslogger)
96
97
console = logging.StreamHandler()
98
console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'
99
' %(levelname)s:'
100
' %(message)s'))
101
logger.addHandler(console)
224
102
225
103
class AvahiError(Exception):
226
104
def __init__(self, value, *args, **kwargs):
227
105
self.value = value
228
return super(AvahiError, self).__init__(value, *args,
229
**kwargs)
106
super(AvahiError, self).__init__(value, *args, **kwargs)
107
def __unicode__(self):
108
return unicode(repr(self.value))
230
109
231
110
class AvahiServiceError(AvahiError):
232
111
pass
243
122
Used to optionally bind to the specified interface.
244
123
name: string; Example: 'Mandos'
245
124
type: string; Example: '_mandos._tcp'.
246
See <https://www.iana.org/assignments/service-names-port-numbers>
125
See <http://www.dns-sd.org/ServiceTypes.html>
247
126
port: integer; what port to announce
248
127
TXT: list of strings; TXT record for the service
249
128
domain: string; Domain to publish on, default to .local if empty.
255
134
server: D-Bus Server
256
135
bus: dbus.SystemBus()
257
136
"""
258
259
137
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
260
138
servicetype = None, port = None, TXT = None,
261
139
domain = "", host = "", max_renames = 32768,
274
152
self.server = None
275
153
self.bus = bus
276
154
self.entry_group_state_changed_match = None
277
278
def rename(self, remove=True):
155
def rename(self):
279
156
"""Derived from the Avahi example code"""
280
157
if self.rename_count >= self.max_renames:
281
158
logger.critical("No suitable Zeroconf service name found"
282
159
" after %i retries, exiting.",
283
160
self.rename_count)
284
161
raise AvahiServiceError("Too many renames")
285
self.name = str(self.server
286
.GetAlternativeServiceName(self.name))
287
self.rename_count += 1
162
self.name = unicode(self.server.GetAlternativeServiceName(self.name))
288
163
logger.info("Changing Zeroconf service name to %r ...",
289
164
self.name)
290
if remove:
291
self.remove()
165
syslogger.setFormatter(logging.Formatter
166
('Mandos (%s) [%%(process)d]:'
167
' %%(levelname)s: %%(message)s'
168
% self.name))
169
self.remove()
292
170
try:
293
171
self.add()
294
172
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
173
logger.critical("DBusException: %s", error)
174
self.cleanup()
175
os._exit(1)
176
self.rename_count += 1
304
177
def remove(self):
305
178
"""Derived from the Avahi example code"""
306
179
if self.entry_group_state_changed_match is not None:
308
181
self.entry_group_state_changed_match = None
309
182
if self.group is not None:
310
183
self.group.Reset()
311
312
184
def add(self):
313
185
"""Derived from the Avahi example code"""
314
186
self.remove()
319
191
avahi.DBUS_INTERFACE_ENTRY_GROUP)
320
192
self.entry_group_state_changed_match = (
321
193
self.group.connect_to_signal(
322
'StateChanged', self.entry_group_state_changed))
194
'StateChanged', self .entry_group_state_changed))
323
195
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
324
196
self.name, self.type)
325
197
self.group.AddService(
331
203
dbus.UInt16(self.port),
332
204
avahi.string_array_to_txt_array(self.TXT))
333
205
self.group.Commit()
334
335
206
def entry_group_state_changed(self, state, error):
336
207
"""Derived from the Avahi example code"""
337
208
logger.debug("Avahi entry group state change: %i", state)
343
214
self.rename()
344
215
elif state == avahi.ENTRY_GROUP_FAILURE:
345
216
logger.critical("Avahi: Error in group state changed %s",
346
str(error))
347
raise AvahiGroupError("State changed: {!s}"
348
.format(error))
349
217
unicode(error))
218
raise AvahiGroupError("State changed: %s"
219
% unicode(error))
350
220
def cleanup(self):
351
221
"""Derived from the Avahi example code"""
352
222
if self.group is not None:
353
223
try:
354
224
self.group.Free()
355
225
except (dbus.exceptions.UnknownMethodException,
356
dbus.exceptions.DBusException):
226
dbus.exceptions.DBusException) as e:
357
227
pass
358
228
self.group = None
359
229
self.remove()
360
361
230
def server_state_changed(self, state, error=None):
362
231
"""Derived from the Avahi example code"""
363
232
logger.debug("Avahi server state change: %i", state)
382
251
logger.debug("Unknown state: %r", state)
383
252
else:
384
253
logger.debug("Unknown state: %r: %r", state, error)
385
386
254
def activate(self):
387
255
"""Derived from the Avahi example code"""
388
256
if self.server is None:
396
264
self.server_state_changed(self.server.GetState())
397
265
398
266
399
class AvahiServiceToSyslog(AvahiService):
400
def rename(self, *args, **kwargs):
401
"""Add the new name to the syslog messages"""
402
ret = AvahiService.rename(self, *args, **kwargs)
403
syslogger.setFormatter(logging.Formatter
404
('Mandos ({}) [%(process)d]:'
405
' %(levelname)s: %(message)s'
406
.format(self.name)))
407
return ret
408
409
267
def _timedelta_to_milliseconds(td):
268
"Convert a datetime.timedelta() to milliseconds"
269
return ((td.days * 24 * 60 * 60 * 1000)
270
+ (td.seconds * 1000)
271
+ (td.microseconds // 1000))
272
410
273
class Client(object):
411
274
"""A representation of a client host served by this server.
412
275
413
276
Attributes:
414
approved: bool(); 'None' if not yet approved/disapproved
277
_approved: bool(); 'None' if not yet approved/disapproved
415
278
approval_delay: datetime.timedelta(); Time to wait for approval
416
279
approval_duration: datetime.timedelta(); Duration of one approval
417
280
checker: subprocess.Popen(); a running checker process used
424
287
instance %(name)s can be used in the command.
425
288
checker_initiator_tag: a gobject event source tag, or None
426
289
created: datetime.datetime(); (UTC) object creation
427
client_structure: Object describing what attributes a client has
428
and is used for storing the client at exit
429
290
current_checker_command: string; current running checker_command
291
disable_hook: If set, called by disable() as disable_hook(self)
430
292
disable_initiator_tag: a gobject event source tag, or None
431
293
enabled: bool()
432
294
fingerprint: string (40 or 32 hexadecimal digits); used to
435
297
interval: datetime.timedelta(); How often to start a new checker
436
298
last_approval_request: datetime.datetime(); (UTC) or None
437
299
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
300
last_enabled: datetime.datetime(); (UTC)
442
301
name: string; from the config file, used in log messages and
443
302
D-Bus identifiers
444
303
secret: bytestring; sent verbatim (over TLS) to client
445
304
timeout: datetime.timedelta(); How long from last_checked_ok
446
305
until this client is disabled
447
extended_timeout: extra long timeout when secret has been sent
306
extended_timeout: extra long timeout when password has been sent
448
307
runtime_expansions: Allowed attributes for runtime expansion.
449
308
expires: datetime.datetime(); time (UTC) when a client will be
450
309
disabled, or None
451
server_settings: The server_settings dict from main()
452
310
"""
453
311
454
312
runtime_expansions = ("approval_delay", "approval_duration",
455
"created", "enabled", "expires",
456
"fingerprint", "host", "interval",
457
"last_approval_request", "last_checked_ok",
313
"created", "enabled", "fingerprint",
314
"host", "interval", "last_checked_ok",
458
315
"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):
316
317
def timeout_milliseconds(self):
318
"Return the 'timeout' attribute in milliseconds"
319
return _timedelta_to_milliseconds(self.timeout)
320
321
def extended_timeout_milliseconds(self):
322
"Return the 'extended_timeout' attribute in milliseconds"
323
return _timedelta_to_milliseconds(self.extended_timeout)
324
325
def interval_milliseconds(self):
326
"Return the 'interval' attribute in milliseconds"
327
return _timedelta_to_milliseconds(self.interval)
328
329
def approval_delay_milliseconds(self):
330
return _timedelta_to_milliseconds(self.approval_delay)
331
332
def __init__(self, name = None, disable_hook=None, config=None):
333
"""Note: the 'checker' key in 'config' sets the
334
'checker_command' attribute and *not* the 'checker'
335
attribute."""
521
336
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
337
if config is None:
338
config = {}
539
339
logger.debug("Creating client %r", self.name)
340
# Uppercase and remove spaces from fingerprint for later
341
# comparison purposes with return value from the fingerprint()
342
# function
343
self.fingerprint = (config["fingerprint"].upper()
344
.replace(" ", ""))
540
345
logger.debug(" Fingerprint: %s", self.fingerprint)
541
self.created = settings.get("created",
542
datetime.datetime.utcnow())
543
544
# attributes specific for this server instance
346
if "secret" in config:
347
self.secret = config["secret"].decode("base64")
348
elif "secfile" in config:
349
with open(os.path.expanduser(os.path.expandvars
350
(config["secfile"])),
351
"rb") as secfile:
352
self.secret = secfile.read()
353
else:
354
raise TypeError("No secret or secfile for client %s"
355
% self.name)
356
self.host = config.get("host", "")
357
self.created = datetime.datetime.utcnow()
358
self.enabled = False
359
self.last_approval_request = None
360
self.last_enabled = None
361
self.last_checked_ok = None
362
self.timeout = string_to_delta(config["timeout"])
363
self.extended_timeout = string_to_delta(config["extended_timeout"])
364
self.interval = string_to_delta(config["interval"])
365
self.disable_hook = disable_hook
545
366
self.checker = None
546
367
self.checker_initiator_tag = None
547
368
self.disable_initiator_tag = None
369
self.expires = None
548
370
self.checker_callback_tag = None
371
self.checker_command = config["checker"]
549
372
self.current_checker_command = None
550
self.approved = None
373
self.last_connect = None
374
self._approved = None
375
self.approved_by_default = config.get("approved_by_default",
376
True)
551
377
self.approvals_pending = 0
552
self.changedstate = (multiprocessing_manager
553
.Condition(multiprocessing_manager
554
.Lock()))
555
self.client_structure = [attr for attr in
556
self.__dict__.iterkeys()
557
if not attr.startswith("_")]
558
self.client_structure.append("client_structure")
559
560
for name, t in inspect.getmembers(type(self),
561
lambda obj:
562
isinstance(obj,
563
property)):
564
if not name.startswith("_"):
565
self.client_structure.append(name)
378
self.approval_delay = string_to_delta(
379
config["approval_delay"])
380
self.approval_duration = string_to_delta(
381
config["approval_duration"])
382
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
566
383
567
# Send notice to process children that client state has changed
568
384
def send_changedstate(self):
569
with self.changedstate:
570
self.changedstate.notify_all()
571
385
self.changedstate.acquire()
386
self.changedstate.notify_all()
387
self.changedstate.release()
388
572
389
def enable(self):
573
390
"""Start this client's checker and timeout hooks"""
574
391
if getattr(self, "enabled", False):
575
392
# Already enabled
576
393
return
394
self.send_changedstate()
395
# Schedule a new checker to be started an 'interval' from now,
396
# and every interval from then on.
397
self.checker_initiator_tag = (gobject.timeout_add
398
(self.interval_milliseconds(),
399
self.start_checker))
400
# Schedule a disable() when 'timeout' has passed
577
401
self.expires = datetime.datetime.utcnow() + self.timeout
402
self.disable_initiator_tag = (gobject.timeout_add
403
(self.timeout_milliseconds(),
404
self.disable))
578
405
self.enabled = True
579
406
self.last_enabled = datetime.datetime.utcnow()
580
self.init_checker()
581
self.send_changedstate()
407
# Also start a new checker *right now*.
408
self.start_checker()
582
409
583
410
def disable(self, quiet=True):
584
411
"""Disable this client."""
585
412
if not getattr(self, "enabled", False):
586
413
return False
587
414
if not quiet:
415
self.send_changedstate()
416
if not quiet:
588
417
logger.info("Disabling client %s", self.name)
589
if getattr(self, "disable_initiator_tag", None) is not None:
418
if getattr(self, "disable_initiator_tag", False):
590
419
gobject.source_remove(self.disable_initiator_tag)
591
420
self.disable_initiator_tag = None
592
421
self.expires = None
593
if getattr(self, "checker_initiator_tag", None) is not None:
422
if getattr(self, "checker_initiator_tag", False):
594
423
gobject.source_remove(self.checker_initiator_tag)
595
424
self.checker_initiator_tag = None
596
425
self.stop_checker()
426
if self.disable_hook:
427
self.disable_hook(self)
597
428
self.enabled = False
598
if not quiet:
599
self.send_changedstate()
600
429
# Do not run this again if called by a gobject.timeout_add
601
430
return False
602
431
603
432
def __del__(self):
433
self.disable_hook = None
604
434
self.disable()
605
435
606
def init_checker(self):
607
# Schedule a new checker to be started an 'interval' from now,
608
# and every interval from then on.
609
if self.checker_initiator_tag is not None:
610
gobject.source_remove(self.checker_initiator_tag)
611
self.checker_initiator_tag = (gobject.timeout_add
612
(int(self.interval
613
.total_seconds() * 1000),
614
self.start_checker))
615
# 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
self.disable_initiator_tag = (gobject.timeout_add
619
(int(self.timeout
620
.total_seconds() * 1000),
621
self.disable))
622
# Also start a new checker *right now*.
623
self.start_checker()
624
625
436
def checker_callback(self, pid, condition, command):
626
437
"""The checker has completed, so take appropriate actions."""
627
438
self.checker_callback_tag = None
628
439
self.checker = None
629
440
if os.WIFEXITED(condition):
630
self.last_checker_status = os.WEXITSTATUS(condition)
631
if self.last_checker_status == 0:
441
exitstatus = os.WEXITSTATUS(condition)
442
if exitstatus == 0:
632
443
logger.info("Checker for %(name)s succeeded",
633
444
vars(self))
634
445
self.checked_ok()
636
447
logger.info("Checker for %(name)s failed",
637
448
vars(self))
638
449
else:
639
self.last_checker_status = -1
640
450
logger.warning("Checker for %(name)s crashed?",
641
451
vars(self))
642
452
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."""
453
def checked_ok(self, timeout=None):
454
"""Bump up the timeout for this client.
455
456
This should only be called when the client has been seen,
457
alive and well.
458
"""
651
459
if timeout is None:
652
460
timeout = self.timeout
653
if self.disable_initiator_tag is not None:
654
gobject.source_remove(self.disable_initiator_tag)
655
self.disable_initiator_tag = None
656
if getattr(self, "enabled", False):
657
self.disable_initiator_tag = (gobject.timeout_add
658
(int(timeout.total_seconds()
659
* 1000), self.disable))
660
self.expires = datetime.datetime.utcnow() + timeout
461
self.last_checked_ok = datetime.datetime.utcnow()
462
gobject.source_remove(self.disable_initiator_tag)
463
self.expires = datetime.datetime.utcnow() + timeout
464
self.disable_initiator_tag = (gobject.timeout_add
465
(_timedelta_to_milliseconds(timeout),
466
self.disable))
661
467
662
468
def need_approval(self):
663
469
self.last_approval_request = datetime.datetime.utcnow()
668
474
If a checker already exists, leave it running and do
669
475
nothing."""
670
476
# 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
477
# did that, then if a checker (for some reason) started
478
# running slowly and taking more than 'interval' time, the
479
# client would inevitably timeout, since no checker would get
480
# a chance to run to completion. If we instead leave running
675
481
# checkers alone, the checker would have to take more time
676
482
# than 'timeout' for the client to be disabled, which is as it
677
483
# should be.
679
485
# If a checker exists, make sure it is not a zombie
680
486
try:
681
487
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
488
except (AttributeError, OSError) as error:
489
if (isinstance(error, OSError)
490
and error.errno != errno.ECHILD):
491
raise error
687
492
else:
688
493
if pid:
689
494
logger.warning("Checker was a zombie")
692
497
self.current_checker_command)
693
498
# Start a new checker if needed
694
499
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
500
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
501
# In case checker_command has exactly one % operator
502
command = self.checker_command % self.host
503
except TypeError:
504
# Escape attributes for the shell
505
escaped_attrs = dict(
506
(attr,
507
re.escape(unicode(str(getattr(self, attr, "")),
508
errors=
509
'replace')))
510
for attr in
511
self.runtime_expansions)
512
513
try:
514
command = self.checker_command % escaped_attrs
515
except TypeError as error:
516
logger.error('Could not format string "%s":'
517
' %s', self.checker_command, error)
518
return True # Try again later
705
519
self.current_checker_command = command
706
520
try:
707
521
logger.info("Starting checker %r for %s",
710
524
# in normal mode, that is already done by daemon(),
711
525
# and in debug mode we don't want to. (Stdin is
712
526
# 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
527
self.checker = subprocess.Popen(command,
722
528
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:
529
shell=True, cwd="/")
530
self.checker_callback_tag = (gobject.child_watch_add
531
(self.checker.pid,
532
self.checker_callback,
533
data=command))
534
# The checker may have completed before the gobject
535
# watch was added. Check for this.
736
536
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
537
if pid:
538
gobject.source_remove(self.checker_callback_tag)
539
self.checker_callback(pid, status, command)
737
540
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)
541
logger.error("Failed to start subprocess: %s",
542
error)
747
543
# Re-run this periodically if run by gobject.timeout_add
748
544
return True
749
545
756
552
return
757
553
logger.debug("Stopping checker for %(name)s", vars(self))
758
554
try:
759
self.checker.terminate()
555
os.kill(self.checker.pid, signal.SIGTERM)
760
556
#time.sleep(0.5)
761
557
#if self.checker.poll() is None:
762
# self.checker.kill()
558
# os.kill(self.checker.pid, signal.SIGKILL)
763
559
except OSError as error:
764
560
if error.errno != errno.ESRCH: # No such process
765
561
raise
782
578
# "Set" method, so we fail early here:
783
579
if byte_arrays and signature != "ay":
784
580
raise ValueError("Byte arrays not supported for non-'ay'"
785
" signature {!r}".format(signature))
581
" signature %r" % signature)
786
582
def decorator(func):
787
583
func._dbus_is_property = True
788
584
func._dbus_interface = dbus_interface
796
592
return decorator
797
593
798
594
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
595
class DBusPropertyException(dbus.exceptions.DBusException):
837
596
"""A base class for D-Bus property-related exceptions
838
597
"""
839
pass
598
def __unicode__(self):
599
return unicode(str(self))
600
840
601
841
602
class DBusPropertyAccessException(DBusPropertyException):
842
603
"""A property's access permissions disallows an operation.
859
620
"""
860
621
861
622
@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)
623
def _is_dbus_property(obj):
624
return getattr(obj, "_dbus_is_property", False)
870
625
871
def _get_all_dbus_things(self, thing):
626
def _get_all_dbus_properties(self):
872
627
"""Returns a generator of (name, attribute) pairs
873
628
"""
874
return ((getattr(athing.__get__(self), "_dbus_name",
875
name),
876
athing.__get__(self))
877
for cls in self.__class__.__mro__
878
for name, athing in
879
inspect.getmembers(cls,
880
self._is_dbus_thing(thing)))
629
return ((prop._dbus_name, prop)
630
for name, prop in
631
inspect.getmembers(self, self._is_dbus_property))
881
632
882
633
def _get_dbus_property(self, interface_name, property_name):
883
634
"""Returns a bound method if one exists which is a D-Bus
884
635
property with the specified name and interface.
885
636
"""
886
for cls in self.__class__.__mro__:
887
for name, value in (inspect.getmembers
888
(cls,
889
self._is_dbus_thing("property"))):
890
if (value._dbus_name == property_name
891
and value._dbus_interface == interface_name):
892
return value.__get__(self)
893
637
for name in (property_name,
638
property_name + "_dbus_property"):
639
prop = getattr(self, name, None)
640
if (prop is None
641
or not self._is_dbus_property(prop)
642
or prop._dbus_name != property_name
643
or (interface_name and prop._dbus_interface
644
and interface_name != prop._dbus_interface)):
645
continue
646
return prop
894
647
# No such property
895
648
raise DBusPropertyNotFound(self.dbus_object_path + ":"
896
649
+ interface_name + "."
920
673
# The byte_arrays option is not supported yet on
921
674
# signatures other than "ay".
922
675
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))
676
raise ValueError
677
value = dbus.ByteArray(''.join(unichr(byte)
678
for byte in value))
928
679
prop(value)
929
680
930
681
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
935
686
936
687
Note: Will not include properties with access="write".
937
688
"""
938
properties = {}
939
for name, prop in self._get_all_dbus_things("property"):
689
all = {}
690
for name, prop in self._get_all_dbus_properties():
940
691
if (interface_name
941
692
and interface_name != prop._dbus_interface):
942
693
# Interface non-empty but did not match
946
697
continue
947
698
value = prop()
948
699
if not hasattr(value, "variant_level"):
949
properties[name] = value
700
all[name] = value
950
701
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
702
all[name] = type(value)(value, variant_level=
703
value.variant_level+1)
704
return dbus.Dictionary(all, signature="sv")
962
705
963
706
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
964
707
out_signature="s",
965
708
path_keyword='object_path',
966
709
connection_keyword='connection')
967
710
def Introspect(self, object_path, connection):
968
"""Overloading of standard D-Bus method.
969
970
Inserts property tags and interface annotation tags.
711
"""Standard D-Bus method, overloaded to insert property tags.
971
712
"""
972
713
xmlstring = dbus.service.Object.Introspect(self, object_path,
973
714
connection)
980
721
e.setAttribute("access", prop._dbus_access)
981
722
return e
982
723
for if_tag in document.getElementsByTagName("interface"):
983
# Add property tags
984
724
for tag in (make_tag(document, name, prop)
985
725
for name, prop
986
in self._get_all_dbus_things("property")
726
in self._get_all_dbus_properties()
987
727
if prop._dbus_interface
988
728
== if_tag.getAttribute("name")):
989
729
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
730
# Add the names to the return values for the
1022
731
# "org.freedesktop.DBus.Properties" methods
1023
732
if (if_tag.getAttribute("name")
1038
747
except (AttributeError, xml.dom.DOMException,
1039
748
xml.parsers.expat.ExpatError) as error:
1040
749
logger.error("Failed to override Introspection method",
1041
exc_info=error)
750
error)
1042
751
return xmlstring
1043
752
1044
753
1045
def datetime_to_dbus(dt, variant_level=0):
754
def datetime_to_dbus (dt, variant_level=0):
1046
755
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1047
756
if dt is None:
1048
757
return dbus.String("", variant_level = variant_level)
1050
759
variant_level=variant_level)
1051
760
1052
761
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).
1075
"""
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):
1083
# Ignore non-D-Bus attributes, and D-Bus attributes
1084
# with the wrong interface name
1085
if (not hasattr(attribute, "_dbus_interface")
1086
or not attribute._dbus_interface
1087
.startswith(orig_interface_name)):
1088
continue
1089
# Create an alternate D-Bus interface name based on
1090
# the current name
1091
alt_interface = (attribute._dbus_interface
1092
.replace(orig_interface_name,
1093
alt_interface_name))
1094
interface_names.add(alt_interface)
1095
# Is this a D-Bus signal?
1096
if getattr(attribute, "_dbus_is_signal", False):
1097
# Extract the original non-method undecorated
1098
# function by black magic
1099
nonmethod_func = (dict(
1100
zip(attribute.func_code.co_freevars,
1101
attribute.__closure__))["func"]
1102
.cell_contents)
1103
# Create a new, but exactly alike, function
1104
# object, and decorate it to be a new D-Bus signal
1105
# with the alternate D-Bus interface name
1106
new_function = (dbus.service.signal
1107
(alt_interface,
1108
attribute._dbus_signature)
1109
(types.FunctionType(
1110
nonmethod_func.func_code,
1111
nonmethod_func.func_globals,
1112
nonmethod_func.func_name,
1113
nonmethod_func.func_defaults,
1114
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
# 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
1125
def fixscope(func1, func2):
1126
"""This function is a scope container to pass
1127
func1 and func2 to the "call_both" function
1128
outside of its arguments"""
1129
def call_both(*args, **kwargs):
1130
"""This function will emit two D-Bus
1131
signals by calling func1 and func2"""
1132
func1(*args, **kwargs)
1133
func2(*args, **kwargs)
1134
return call_both
1135
# Create the "call_both" function and add it to
1136
# the class
1137
attr[attrname] = fixscope(attribute, new_function)
1138
# Is this a D-Bus method?
1139
elif getattr(attribute, "_dbus_is_method", False):
1140
# Create a new, but exactly alike, function
1141
# object. Decorate it to be a new D-Bus method
1142
# with the alternate D-Bus interface name. Add it
1143
# to the class.
1144
attr[attrname] = (dbus.service.method
1145
(alt_interface,
1146
attribute._dbus_in_signature,
1147
attribute._dbus_out_signature)
1148
(types.FunctionType
1149
(attribute.func_code,
1150
attribute.func_globals,
1151
attribute.func_name,
1152
attribute.func_defaults,
1153
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
# Is this a D-Bus property?
1161
elif getattr(attribute, "_dbus_is_property", False):
1162
# Create a new, but exactly alike, function
1163
# object, and decorate it to be a new D-Bus
1164
# property with the alternate D-Bus interface
1165
# name. Add it to the class.
1166
attr[attrname] = (dbus_service_property
1167
(alt_interface,
1168
attribute._dbus_signature,
1169
attribute._dbus_access,
1170
attribute
1171
._dbus_get_args_options
1172
["byte_arrays"])
1173
(types.FunctionType
1174
(attribute.func_code,
1175
attribute.func_globals,
1176
attribute.func_name,
1177
attribute.func_defaults,
1178
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"})
1224
762
class ClientDBus(Client, DBusObjectWithProperties):
1225
763
"""A Client class using D-Bus
1226
764
1232
770
runtime_expansions = (Client.runtime_expansions
1233
771
+ ("dbus_object_path",))
1234
772
1235
_interface = "se.recompile.Mandos.Client"
1236
1237
773
# dbus.service.Object doesn't use super(), so we can't either.
1238
774
1239
775
def __init__(self, bus = None, *args, **kwargs):
776
self._approvals_pending = 0
1240
777
self.bus = bus
1241
778
Client.__init__(self, *args, **kwargs)
1242
779
# Only now, when this client is initialized, can it show up on
1243
780
# the D-Bus
1244
client_object_name = str(self.name).translate(
781
client_object_name = unicode(self.name).translate(
1245
782
{ord("."): ord("_"),
1246
783
ord("-"): ord("_")})
1247
784
self.dbus_object_path = (dbus.ObjectPath
1248
785
("/clients/" + client_object_name))
1249
786
DBusObjectWithProperties.__init__(self, self.bus,
1250
787
self.dbus_object_path)
1251
788
1252
789
def notifychangeproperty(transform_func,
1253
790
dbus_name, type_func=lambda x: x,
1254
variant_level=1, invalidate_only=False,
1255
_interface=_interface):
1256
""" Modify a variable so that it's a property which announces
1257
its changes to DBus.
1258
1259
transform_fun: Function that takes a value and a variant_level
1260
and transforms it to a D-Bus type.
1261
dbus_name: D-Bus name of the variable
791
variant_level=1):
792
""" Modify a variable so that its a property that announce its
793
changes to DBus.
794
transform_fun: Function that takes a value and transform it to
795
DBus type.
796
dbus_name: DBus name of the variable
1262
797
type_func: Function that transform the value before sending it
1263
to the D-Bus. Default: no transform
1264
variant_level: D-Bus variant level. Default: 1
798
to DBus
799
variant_level: DBus variant level. default: 1
1265
800
"""
1266
attrname = "_{}".format(dbus_name)
801
real_value = [None,]
1267
802
def setter(self, value):
803
old_value = real_value[0]
804
real_value[0] = value
1268
805
if hasattr(self, "dbus_object_path"):
1269
if (not hasattr(self, attrname) or
1270
type_func(getattr(self, attrname, None))
1271
!= 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())
1287
setattr(self, attrname, value)
806
if type_func(old_value) != type_func(real_value[0]):
807
dbus_value = transform_func(type_func(real_value[0]),
808
variant_level)
809
self.PropertyChanged(dbus.String(dbus_name),
810
dbus_value)
1288
811
1289
return property(lambda self: getattr(self, attrname), setter)
812
return property(lambda self: real_value[0], setter)
813
1290
814
1291
815
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1292
816
approvals_pending = notifychangeproperty(dbus.Boolean,
1296
820
last_enabled = notifychangeproperty(datetime_to_dbus,
1297
821
"LastEnabled")
1298
822
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1299
type_func = lambda checker:
1300
checker is not None)
823
type_func = lambda checker: checker is not None)
1301
824
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1302
825
"LastCheckedOK")
1303
last_checker_status = notifychangeproperty(dbus.Int16,
1304
"LastCheckerStatus")
1305
last_approval_request = notifychangeproperty(
1306
datetime_to_dbus, "LastApprovalRequest")
826
last_approval_request = notifychangeproperty(datetime_to_dbus,
827
"LastApprovalRequest")
1307
828
approved_by_default = notifychangeproperty(dbus.Boolean,
1308
829
"ApprovedByDefault")
1309
approval_delay = notifychangeproperty(dbus.UInt64,
1310
"ApprovalDelay",
1311
type_func =
1312
lambda td: td.total_seconds()
1313
* 1000)
1314
approval_duration = notifychangeproperty(
1315
dbus.UInt64, "ApprovalDuration",
1316
type_func = lambda td: td.total_seconds() * 1000)
830
approval_delay = notifychangeproperty(dbus.UInt16, "ApprovalDelay",
831
type_func = _timedelta_to_milliseconds)
832
approval_duration = notifychangeproperty(dbus.UInt16, "ApprovalDuration",
833
type_func = _timedelta_to_milliseconds)
1317
834
host = notifychangeproperty(dbus.String, "Host")
1318
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1319
type_func = lambda td:
1320
td.total_seconds() * 1000)
1321
extended_timeout = notifychangeproperty(
1322
dbus.UInt64, "ExtendedTimeout",
1323
type_func = lambda td: td.total_seconds() * 1000)
1324
interval = notifychangeproperty(dbus.UInt64,
1325
"Interval",
1326
type_func =
1327
lambda td: td.total_seconds()
1328
* 1000)
835
timeout = notifychangeproperty(dbus.UInt16, "Timeout",
836
type_func = _timedelta_to_milliseconds)
837
extended_timeout = notifychangeproperty(dbus.UInt16, "ExtendedTimeout",
838
type_func = _timedelta_to_milliseconds)
839
interval = notifychangeproperty(dbus.UInt16, "Interval",
840
type_func = _timedelta_to_milliseconds)
1329
841
checker_command = notifychangeproperty(dbus.String, "Checker")
1330
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1331
invalidate_only=True)
1332
842
1333
843
del notifychangeproperty
1334
844
1361
871
*args, **kwargs)
1362
872
1363
873
def start_checker(self, *args, **kwargs):
1364
old_checker_pid = getattr(self.checker, "pid", None)
874
old_checker = self.checker
875
if self.checker is not None:
876
old_checker_pid = self.checker.pid
877
else:
878
old_checker_pid = None
1365
879
r = Client.start_checker(self, *args, **kwargs)
1366
880
# Only if new checker process was started
1367
881
if (self.checker is not None
1371
885
return r
1372
886
1373
887
def _reset_approved(self):
1374
self.approved = None
888
self._approved = None
1375
889
return False
1376
890
1377
891
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
892
self.send_changedstate()
893
self._approved = value
894
gobject.timeout_add(_timedelta_to_milliseconds
895
(self.approval_duration),
896
self._reset_approved)
897
1382
898
1383
899
## D-Bus methods, signals & properties
1384
1385
## Interfaces
900
_interface = "se.bsnet.fukt.Mandos.Client"
1386
901
1387
902
## Signals
1388
903
1399
914
pass
1400
915
1401
916
# PropertyChanged - signal
1402
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1403
917
@dbus.service.signal(_interface, signature="sv")
1404
918
def PropertyChanged(self, property, value):
1405
919
"D-Bus signal"
1481
995
access="readwrite")
1482
996
def ApprovalDelay_dbus_property(self, value=None):
1483
997
if value is None: # get
1484
return dbus.UInt64(self.approval_delay.total_seconds()
1485
* 1000)
998
return dbus.UInt64(self.approval_delay_milliseconds())
1486
999
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1487
1000
1488
1001
# ApprovalDuration - property
1490
1003
access="readwrite")
1491
1004
def ApprovalDuration_dbus_property(self, value=None):
1492
1005
if value is None: # get
1493
return dbus.UInt64(self.approval_duration.total_seconds()
1494
* 1000)
1006
return dbus.UInt64(_timedelta_to_milliseconds(
1007
self.approval_duration))
1495
1008
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1496
1009
1497
1010
# Name - property
1510
1023
def Host_dbus_property(self, value=None):
1511
1024
if value is None: # get
1512
1025
return dbus.String(self.host)
1513
self.host = str(value)
1026
self.host = value
1514
1027
1515
1028
# Created - property
1516
1029
@dbus_service_property(_interface, signature="s", access="read")
1517
1030
def Created_dbus_property(self):
1518
return datetime_to_dbus(self.created)
1031
return dbus.String(datetime_to_dbus(self.created))
1519
1032
1520
1033
# LastEnabled - property
1521
1034
@dbus_service_property(_interface, signature="s", access="read")
1542
1055
return
1543
1056
return datetime_to_dbus(self.last_checked_ok)
1544
1057
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
1058
# Expires - property
1552
1059
@dbus_service_property(_interface, signature="s", access="read")
1553
1060
def Expires_dbus_property(self):
1563
1070
access="readwrite")
1564
1071
def Timeout_dbus_property(self, value=None):
1565
1072
if value is None: # get
1566
return dbus.UInt64(self.timeout.total_seconds() * 1000)
1567
old_timeout = self.timeout
1073
return dbus.UInt64(self.timeout_milliseconds())
1568
1074
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))
1075
if getattr(self, "disable_initiator_tag", None) is None:
1076
return
1077
# Reschedule timeout
1078
gobject.source_remove(self.disable_initiator_tag)
1079
self.disable_initiator_tag = None
1080
self.expires = None
1081
time_to_die = (self.
1082
_timedelta_to_milliseconds((self
1083
.last_checked_ok
1084
+ self.timeout)
1085
- datetime.datetime
1086
.utcnow()))
1087
if time_to_die <= 0:
1088
# The timeout has passed
1089
self.disable()
1090
else:
1091
self.expires = (datetime.datetime.utcnow()
1092
+ datetime.timedelta(milliseconds = time_to_die))
1093
self.disable_initiator_tag = (gobject.timeout_add
1094
(time_to_die, self.disable))
1585
1095
1586
1096
# ExtendedTimeout - property
1587
1097
@dbus_service_property(_interface, signature="t",
1588
1098
access="readwrite")
1589
1099
def ExtendedTimeout_dbus_property(self, value=None):
1590
1100
if value is None: # get
1591
return dbus.UInt64(self.extended_timeout.total_seconds()
1592
* 1000)
1101
return dbus.UInt64(self.extended_timeout_milliseconds())
1593
1102
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1594
1103
1595
1104
# Interval - property
1597
1106
access="readwrite")
1598
1107
def Interval_dbus_property(self, value=None):
1599
1108
if value is None: # get
1600
return dbus.UInt64(self.interval.total_seconds() * 1000)
1109
return dbus.UInt64(self.interval_milliseconds())
1601
1110
self.interval = datetime.timedelta(0, 0, 0, value)
1602
1111
if getattr(self, "checker_initiator_tag", None) is None:
1603
1112
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
1113
# Reschedule checker run
1114
gobject.source_remove(self.checker_initiator_tag)
1115
self.checker_initiator_tag = (gobject.timeout_add
1116
(value, self.start_checker))
1117
self.start_checker() # Start one now, too
1610
1118
1611
1119
# Checker - property
1612
1120
@dbus_service_property(_interface, signature="s",
1614
1122
def Checker_dbus_property(self, value=None):
1615
1123
if value is None: # get
1616
1124
return dbus.String(self.checker_command)
1617
self.checker_command = str(value)
1125
self.checker_command = value
1618
1126
1619
1127
# CheckerRunning - property
1620
1128
@dbus_service_property(_interface, signature="b",
1636
1144
@dbus_service_property(_interface, signature="ay",
1637
1145
access="write", byte_arrays=True)
1638
1146
def Secret_dbus_property(self, value):
1639
self.secret = bytes(value)
1147
self.secret = str(value)
1640
1148
1641
1149
del _interface
1642
1150
1649
1157
raise KeyError()
1650
1158
1651
1159
def __getattribute__(self, name):
1652
if name == '_pipe':
1160
if(name == '_pipe'):
1653
1161
return super(ProxyClient, self).__getattribute__(name)
1654
1162
self._pipe.send(('getattr', name))
1655
1163
data = self._pipe.recv()
1662
1170
return func
1663
1171
1664
1172
def __setattr__(self, name, value):
1665
if name == '_pipe':
1173
if(name == '_pipe'):
1666
1174
return super(ProxyClient, self).__setattr__(name, value)
1667
1175
self._pipe.send(('setattr', name, value))
1668
1176
1676
1184
def handle(self):
1677
1185
with contextlib.closing(self.server.child_pipe) as child_pipe:
1678
1186
logger.info("TCP connection from: %s",
1679
str(self.client_address))
1187
unicode(self.client_address))
1680
1188
logger.debug("Pipe FD: %d",
1681
1189
self.server.child_pipe.fileno())
1682
1190
1708
1216
logger.debug("Protocol version: %r", line)
1709
1217
try:
1710
1218
if int(line.strip().split()[0]) > 1:
1711
raise RuntimeError(line)
1219
raise RuntimeError
1712
1220
except (ValueError, IndexError, RuntimeError) as error:
1713
1221
logger.error("Unknown protocol version: %s", error)
1714
1222
return
1751
1259
client.name)
1752
1260
if self.server.use_dbus:
1753
1261
# Emit D-Bus signal
1754
client.Rejected("Disabled")
1262
client.Rejected("Disabled")
1755
1263
return
1756
1264
1757
if client.approved or not client.approval_delay:
1265
if client._approved or not client.approval_delay:
1758
1266
#We are approved or approval is disabled
1759
1267
break
1760
elif client.approved is None:
1268
elif client._approved is None:
1761
1269
logger.info("Client %s needs approval",
1762
1270
client.name)
1763
1271
if self.server.use_dbus:
1764
1272
# Emit D-Bus signal
1765
1273
client.NeedApproval(
1766
client.approval_delay.total_seconds()
1767
* 1000, client.approved_by_default)
1274
client.approval_delay_milliseconds(),
1275
client.approved_by_default)
1768
1276
else:
1769
1277
logger.warning("Client %s was not approved",
1770
1278
client.name)
1774
1282
return
1775
1283
1776
1284
#wait until timeout or approved
1285
#x = float(client._timedelta_to_milliseconds(delay))
1777
1286
time = datetime.datetime.now()
1778
1287
client.changedstate.acquire()
1779
client.changedstate.wait(delay.total_seconds())
1288
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
1780
1289
client.changedstate.release()
1781
1290
time2 = datetime.datetime.now()
1782
1291
if (time2 - time) >= delay:
1798
1307
try:
1799
1308
sent = session.send(client.secret[sent_size:])
1800
1309
except gnutls.errors.GNUTLSError as error:
1801
logger.warning("gnutls send failed",
1802
exc_info=error)
1310
logger.warning("gnutls send failed")
1803
1311
return
1804
1312
logger.debug("Sent: %d, remaining: %d",
1805
1313
sent, len(client.secret)
1807
1315
sent_size += sent
1808
1316
1809
1317
logger.info("Sending secret to %s", client.name)
1810
# bump the timeout using extended_timeout
1811
client.bump_timeout(client.extended_timeout)
1318
# bump the timeout as if seen
1319
client.checked_ok(client.extended_timeout)
1812
1320
if self.server.use_dbus:
1813
1321
# Emit D-Bus signal
1814
1322
client.GotSecret()
1819
1327
try:
1820
1328
session.bye()
1821
1329
except gnutls.errors.GNUTLSError as error:
1822
logger.warning("GnuTLS bye failed",
1823
exc_info=error)
1330
logger.warning("GnuTLS bye failed")
1824
1331
1825
1332
@staticmethod
1826
1333
def peer_certificate(session):
1882
1389
# Convert the buffer to a Python bytestring
1883
1390
fpr = ctypes.string_at(buf, buf_len.value)
1884
1391
# Convert the bytestring to hexadecimal notation
1885
hex_fpr = binascii.hexlify(fpr).upper()
1392
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
1886
1393
return hex_fpr
1887
1394
1888
1395
1891
1398
def sub_process_main(self, request, address):
1892
1399
try:
1893
1400
self.finish_request(request, address)
1894
except Exception:
1401
except:
1895
1402
self.handle_error(request, address)
1896
1403
self.close_request(request)
1897
1404
1898
1405
def process_request(self, request, address):
1899
1406
"""Start a new process to process the request."""
1900
proc = multiprocessing.Process(target = self.sub_process_main,
1901
args = (request, address))
1902
proc.start()
1903
return proc
1407
multiprocessing.Process(target = self.sub_process_main,
1408
args = (request, address)).start()
1904
1409
1905
1410
1906
1411
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1912
1417
"""
1913
1418
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1914
1419
1915
proc = MultiprocessingMixIn.process_request(self, request,
1916
client_address)
1420
super(MultiprocessingMixInWithPipe,
1421
self).process_request(request, client_address)
1917
1422
self.child_pipe.close()
1918
self.add_pipe(parent_pipe, proc)
1423
self.add_pipe(parent_pipe)
1919
1424
1920
def add_pipe(self, parent_pipe, proc):
1425
def add_pipe(self, parent_pipe):
1921
1426
"""Dummy function; override as necessary"""
1922
raise NotImplementedError()
1427
raise NotImplementedError
1923
1428
1924
1429
1925
1430
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1932
1437
use_ipv6: Boolean; to use IPv6 or not
1933
1438
"""
1934
1439
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
"""
1440
interface=None, use_ipv6=True):
1939
1441
self.interface = interface
1940
1442
if use_ipv6:
1941
1443
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
1444
socketserver.TCPServer.__init__(self, server_address,
1969
1445
RequestHandlerClass)
1970
1971
1446
def server_bind(self):
1972
1447
"""This overrides the normal server_bind() function
1973
1448
to bind to an interface if one was specified, and also NOT to
1981
1456
try:
1982
1457
self.socket.setsockopt(socket.SOL_SOCKET,
1983
1458
SO_BINDTODEVICE,
1984
(self.interface + "\0")
1985
.encode("utf-8"))
1459
str(self.interface
1460
+ '\0'))
1986
1461
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:
1462
if error[0] == errno.EPERM:
1463
logger.error("No permission to"
1464
" bind to interface %s",
1465
self.interface)
1466
elif error[0] == errno.ENOPROTOOPT:
1991
1467
logger.error("SO_BINDTODEVICE not available;"
1992
1468
" cannot bind to interface %s",
1993
1469
self.interface)
1994
elif error.errno == errno.ENODEV:
1995
logger.error("Interface %s does not exist,"
1996
" cannot bind", self.interface)
1997
1470
else:
1998
1471
raise
1999
1472
# Only bind(2) the socket if we really need to.
2002
1475
if self.address_family == socket.AF_INET6:
2003
1476
any_address = "::" # in6addr_any
2004
1477
else:
2005
any_address = "0.0.0.0" # INADDR_ANY
1478
any_address = socket.INADDR_ANY
2006
1479
self.server_address = (any_address,
2007
1480
self.server_address[1])
2008
1481
elif not self.server_address[1]:
2029
1502
"""
2030
1503
def __init__(self, server_address, RequestHandlerClass,
2031
1504
interface=None, use_ipv6=True, clients=None,
2032
gnutls_priority=None, use_dbus=True, socketfd=None):
1505
gnutls_priority=None, use_dbus=True):
2033
1506
self.enabled = False
2034
1507
self.clients = clients
2035
1508
if self.clients is None:
2036
self.clients = {}
1509
self.clients = set()
2037
1510
self.use_dbus = use_dbus
2038
1511
self.gnutls_priority = gnutls_priority
2039
1512
IPv6_TCPServer.__init__(self, server_address,
2040
1513
RequestHandlerClass,
2041
1514
interface = interface,
2042
use_ipv6 = use_ipv6,
2043
socketfd = socketfd)
1515
use_ipv6 = use_ipv6)
2044
1516
def server_activate(self):
2045
1517
if self.enabled:
2046
1518
return socketserver.TCPServer.server_activate(self)
2047
2048
1519
def enable(self):
2049
1520
self.enabled = True
2050
2051
def add_pipe(self, parent_pipe, proc):
1521
def add_pipe(self, parent_pipe):
2052
1522
# Call "handle_ipc" for both data and EOF events
2053
1523
gobject.io_add_watch(parent_pipe.fileno(),
2054
1524
gobject.IO_IN | gobject.IO_HUP,
2055
1525
functools.partial(self.handle_ipc,
2056
parent_pipe =
2057
parent_pipe,
2058
proc = proc))
2059
1526
parent_pipe = parent_pipe))
1527
2060
1528
def handle_ipc(self, source, condition, parent_pipe=None,
2061
proc = None, client_object=None):
2062
# error, or the other end of multiprocessing.Pipe has closed
2063
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2064
# Wait for other process to exit
2065
proc.join()
1529
client_object=None):
1530
condition_names = {
1531
gobject.IO_IN: "IN", # There is data to read.
1532
gobject.IO_OUT: "OUT", # Data can be written (without
1533
# blocking).
1534
gobject.IO_PRI: "PRI", # There is urgent data to read.
1535
gobject.IO_ERR: "ERR", # Error condition.
1536
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1537
# broken, usually for pipes and
1538
# sockets).
1539
}
1540
conditions_string = ' | '.join(name
1541
for cond, name in
1542
condition_names.iteritems()
1543
if cond & condition)
1544
# error or the other end of multiprocessing.Pipe has closed
1545
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2066
1546
return False
2067
1547
2068
1548
# Read a request from the child
2073
1553
fpr = request[1]
2074
1554
address = request[2]
2075
1555
2076
for c in self.clients.itervalues():
1556
for c in self.clients:
2077
1557
if c.fingerprint == fpr:
2078
1558
client = c
2079
1559
break
2082
1562
"dress: %s", fpr, address)
2083
1563
if self.use_dbus:
2084
1564
# Emit D-Bus signal
2085
mandos_dbus_service.ClientNotFound(fpr,
2086
address[0])
1565
mandos_dbus_service.ClientNotFound(fpr, address[0])
2087
1566
parent_pipe.send(False)
2088
1567
return False
2089
1568
2090
1569
gobject.io_add_watch(parent_pipe.fileno(),
2091
1570
gobject.IO_IN | gobject.IO_HUP,
2092
1571
functools.partial(self.handle_ipc,
2093
parent_pipe =
2094
parent_pipe,
2095
proc = proc,
2096
client_object =
2097
client))
1572
parent_pipe = parent_pipe,
1573
client_object = client))
2098
1574
parent_pipe.send(True)
2099
# remove the old hook in favor of the new above hook on
2100
# same fileno
1575
# remove the old hook in favor of the new above hook on same fileno
2101
1576
return False
2102
1577
if command == 'funcall':
2103
1578
funcname = request[1]
2104
1579
args = request[2]
2105
1580
kwargs = request[3]
2106
1581
2107
parent_pipe.send(('data', getattr(client_object,
2108
funcname)(*args,
2109
**kwargs)))
1582
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
2110
1583
2111
1584
if command == 'getattr':
2112
1585
attrname = request[1]
2113
1586
if callable(client_object.__getattribute__(attrname)):
2114
1587
parent_pipe.send(('function',))
2115
1588
else:
2116
parent_pipe.send(('data', client_object
2117
.__getattribute__(attrname)))
1589
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
2118
1590
2119
1591
if command == 'setattr':
2120
1592
attrname = request[1]
2124
1596
return True
2125
1597
2126
1598
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
1599
def string_to_delta(interval):
2227
1600
"""Parse a string and return a datetime.timedelta
2228
1601
2239
1612
>>> string_to_delta('5m 30s')
2240
1613
datetime.timedelta(0, 330)
2241
1614
"""
2242
2243
try:
2244
return rfc3339_duration_to_delta(interval)
2245
except ValueError:
2246
pass
2247
2248
1615
timevalue = datetime.timedelta(0)
2249
1616
for s in interval.split():
2250
1617
try:
2251
suffix = s[-1]
1618
suffix = unicode(s[-1])
2252
1619
value = int(s[:-1])
2253
1620
if suffix == "d":
2254
1621
delta = datetime.timedelta(value)
2261
1628
elif suffix == "w":
2262
1629
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2263
1630
else:
2264
raise ValueError("Unknown suffix {!r}"
2265
.format(suffix))
2266
except IndexError as e:
1631
raise ValueError("Unknown suffix %r" % suffix)
1632
except (ValueError, IndexError) as e:
2267
1633
raise ValueError(*(e.args))
2268
1634
timevalue += delta
2269
1635
return timevalue
2270
1636
2271
1637
1638
def if_nametoindex(interface):
1639
"""Call the C function if_nametoindex(), or equivalent
1640
1641
Note: This function cannot accept a unicode string."""
1642
global if_nametoindex
1643
try:
1644
if_nametoindex = (ctypes.cdll.LoadLibrary
1645
(ctypes.util.find_library("c"))
1646
.if_nametoindex)
1647
except (OSError, AttributeError):
1648
logger.warning("Doing if_nametoindex the hard way")
1649
def if_nametoindex(interface):
1650
"Get an interface index the hard way, i.e. using fcntl()"
1651
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1652
with contextlib.closing(socket.socket()) as s:
1653
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1654
struct.pack(str("16s16x"),
1655
interface))
1656
interface_index = struct.unpack(str("I"),
1657
ifreq[16:20])[0]
1658
return interface_index
1659
return if_nametoindex(interface)
1660
1661
2272
1662
def daemon(nochdir = False, noclose = False):
2273
1663
"""See daemon(3). Standard BSD Unix function.
2274
1664
2282
1672
sys.exit()
2283
1673
if not noclose:
2284
1674
# Close all standard open file descriptors
2285
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1675
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2286
1676
if not stat.S_ISCHR(os.fstat(null).st_mode):
2287
raise OSError(errno.ENODEV, "{} not a character device"
2288
.format(os.devnull))
1677
raise OSError(errno.ENODEV,
1678
"%s not a character device"
1679
% os.path.devnull)
2289
1680
os.dup2(null, sys.stdin.fileno())
2290
1681
os.dup2(null, sys.stdout.fileno())
2291
1682
os.dup2(null, sys.stderr.fileno())
2300
1691
2301
1692
parser = argparse.ArgumentParser()
2302
1693
parser.add_argument("-v", "--version", action="version",
2303
version = "%(prog)s {}".format(version),
1694
version = "%%(prog)s %s" % version,
2304
1695
help="show version number and exit")
2305
1696
parser.add_argument("-i", "--interface", metavar="IF",
2306
1697
help="Bind to interface IF")
2312
1703
help="Run self-test")
2313
1704
parser.add_argument("--debug", action="store_true",
2314
1705
help="Debug mode; run in foreground and log"
2315
" to terminal", default=None)
1706
" to terminal")
2316
1707
parser.add_argument("--debuglevel", metavar="LEVEL",
2317
1708
help="Debug level for stdout output")
2318
1709
parser.add_argument("--priority", help="GnuTLS"
2325
1716
" files")
2326
1717
parser.add_argument("--no-dbus", action="store_false",
2327
1718
dest="use_dbus", help="Do not provide D-Bus"
2328
" system bus interface", default=None)
1719
" system bus interface")
2329
1720
parser.add_argument("--no-ipv6", action="store_false",
2330
dest="use_ipv6", help="Do not use IPv6",
2331
default=None)
2332
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
1721
dest="use_ipv6", help="Do not use IPv6")
2346
1722
options = parser.parse_args()
2347
1723
2348
1724
if options.check:
2349
1725
import doctest
2350
fail_count, test_count = doctest.testmod()
2351
sys.exit(os.EX_OK if fail_count == 0 else 1)
1726
doctest.testmod()
1727
sys.exit()
2352
1728
2353
1729
# Default values for config file for server-global settings
2354
1730
server_defaults = { "interface": "",
2356
1732
"port": "",
2357
1733
"debug": "False",
2358
1734
"priority":
2359
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:+SIGN-RSA-SHA224:+SIGN-RSA-RMD160",
1735
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2360
1736
"servicename": "Mandos",
2361
1737
"use_dbus": "True",
2362
1738
"use_ipv6": "True",
2363
1739
"debuglevel": "",
2364
"restore": "True",
2365
"socket": "",
2366
"statedir": "/var/lib/mandos",
2367
"foreground": "False",
2368
"zeroconf": "True",
2369
1740
}
2370
1741
2371
1742
# Parse config file for server-global settings
2376
1747
# Convert the SafeConfigParser object to a dict
2377
1748
server_settings = server_config.defaults()
2378
1749
# Use the appropriate methods on the non-string config options
2379
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
1750
for option in ("debug", "use_dbus", "use_ipv6"):
2380
1751
server_settings[option] = server_config.getboolean("DEFAULT",
2381
1752
option)
2382
1753
if server_settings["port"]:
2383
1754
server_settings["port"] = server_config.getint("DEFAULT",
2384
1755
"port")
2385
if server_settings["socket"]:
2386
server_settings["socket"] = server_config.getint("DEFAULT",
2387
"socket")
2388
# Later, stdin will, and stdout and stderr might, be dup'ed
2389
# over with an opened os.devnull. But we don't want this to
2390
# happen with a supplied network socket.
2391
if 0 <= server_settings["socket"] <= 2:
2392
server_settings["socket"] = os.dup(server_settings
2393
["socket"])
2394
1756
del server_config
2395
1757
2396
1758
# Override the settings from the config file with command line
2397
1759
# options, if set.
2398
1760
for option in ("interface", "address", "port", "debug",
2399
1761
"priority", "servicename", "configdir",
2400
"use_dbus", "use_ipv6", "debuglevel", "restore",
2401
"statedir", "socket", "foreground", "zeroconf"):
1762
"use_dbus", "use_ipv6", "debuglevel"):
2402
1763
value = getattr(options, option)
2403
1764
if value is not None:
2404
1765
server_settings[option] = value
2405
1766
del options
2406
1767
# Force all strings to be unicode
2407
1768
for option in server_settings.keys():
2408
if isinstance(server_settings[option], bytes):
2409
server_settings[option] = (server_settings[option]
2410
.decode("utf-8"))
2411
# Force all boolean options to be boolean
2412
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2413
"foreground", "zeroconf"):
2414
server_settings[option] = bool(server_settings[option])
2415
# Debug implies foreground
2416
if server_settings["debug"]:
2417
server_settings["foreground"] = True
1769
if type(server_settings[option]) is str:
1770
server_settings[option] = unicode(server_settings[option])
2418
1771
# Now we have our good server settings in "server_settings"
2419
1772
2420
1773
##################################################################
2421
1774
2422
if (not server_settings["zeroconf"] and
2423
not (server_settings["port"]
2424
or server_settings["socket"] != "")):
2425
parser.error("Needs port or socket to work without"
2426
" Zeroconf")
2427
2428
1775
# For convenience
2429
1776
debug = server_settings["debug"]
2430
1777
debuglevel = server_settings["debuglevel"]
2431
1778
use_dbus = server_settings["use_dbus"]
2432
1779
use_ipv6 = server_settings["use_ipv6"]
2433
stored_state_path = os.path.join(server_settings["statedir"],
2434
stored_state_file)
2435
foreground = server_settings["foreground"]
2436
zeroconf = server_settings["zeroconf"]
2437
2438
if debug:
2439
initlogger(debug, logging.DEBUG)
2440
else:
2441
if not debuglevel:
2442
initlogger(debug)
2443
else:
2444
level = getattr(logging, debuglevel.upper())
2445
initlogger(debug, level)
2446
1780
2447
1781
if server_settings["servicename"] != "Mandos":
2448
1782
syslogger.setFormatter(logging.Formatter
2449
('Mandos ({}) [%(process)d]:'
2450
' %(levelname)s: %(message)s'
2451
.format(server_settings
2452
["servicename"])))
1783
('Mandos (%s) [%%(process)d]:'
1784
' %%(levelname)s: %%(message)s'
1785
% server_settings["servicename"]))
2453
1786
2454
1787
# Parse config file with clients
2455
client_config = configparser.SafeConfigParser(Client
2456
.client_defaults)
1788
client_defaults = { "timeout": "5m",
1789
"extended_timeout": "15m",
1790
"interval": "2m",
1791
"checker": "fping -q -- %%(host)s",
1792
"host": "",
1793
"approval_delay": "0s",
1794
"approval_duration": "1s",
1795
}
1796
client_config = configparser.SafeConfigParser(client_defaults)
2457
1797
client_config.read(os.path.join(server_settings["configdir"],
2458
1798
"clients.conf"))
2459
1799
2460
1800
global mandos_dbus_service
2461
1801
mandos_dbus_service = None
2462
1802
2463
socketfd = None
2464
if server_settings["socket"] != "":
2465
socketfd = server_settings["socket"]
2466
1803
tcp_server = MandosServer((server_settings["address"],
2467
1804
server_settings["port"]),
2468
1805
ClientHandler,
2471
1808
use_ipv6=use_ipv6,
2472
1809
gnutls_priority=
2473
1810
server_settings["priority"],
2474
use_dbus=use_dbus,
2475
socketfd=socketfd)
2476
if not foreground:
2477
pidfilename = "/run/mandos.pid"
2478
if not os.path.isdir("/run/."):
2479
pidfilename = "/var/run/mandos.pid"
2480
pidfile = None
1811
use_dbus=use_dbus)
1812
if not debug:
1813
pidfilename = "/var/run/mandos.pid"
2481
1814
try:
2482
1815
pidfile = open(pidfilename, "w")
2483
except IOError as e:
2484
logger.error("Could not open file %r", pidfilename,
2485
exc_info=e)
1816
except IOError:
1817
logger.error("Could not open file %r", pidfilename)
2486
1818
2487
for name in ("_mandos", "mandos", "nobody"):
1819
try:
1820
uid = pwd.getpwnam("_mandos").pw_uid
1821
gid = pwd.getpwnam("_mandos").pw_gid
1822
except KeyError:
2488
1823
try:
2489
uid = pwd.getpwnam(name).pw_uid
2490
gid = pwd.getpwnam(name).pw_gid
2491
break
1824
uid = pwd.getpwnam("mandos").pw_uid
1825
gid = pwd.getpwnam("mandos").pw_gid
2492
1826
except KeyError:
2493
continue
2494
else:
2495
uid = 65534
2496
gid = 65534
1827
try:
1828
uid = pwd.getpwnam("nobody").pw_uid
1829
gid = pwd.getpwnam("nobody").pw_gid
1830
except KeyError:
1831
uid = 65534
1832
gid = 65534
2497
1833
try:
2498
1834
os.setgid(gid)
2499
1835
os.setuid(uid)
2500
1836
except OSError as error:
2501
if error.errno != errno.EPERM:
2502
raise
1837
if error[0] != errno.EPERM:
1838
raise error
1839
1840
if not debug and not debuglevel:
1841
syslogger.setLevel(logging.WARNING)
1842
console.setLevel(logging.WARNING)
1843
if debuglevel:
1844
level = getattr(logging, debuglevel.upper())
1845
syslogger.setLevel(level)
1846
console.setLevel(level)
2503
1847
2504
1848
if debug:
2505
1849
# Enable all possible GnuTLS debugging
2516
1860
.gnutls_global_set_log_function(debug_gnutls))
2517
1861
2518
1862
# Redirect stdin so all checkers get /dev/null
2519
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1863
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2520
1864
os.dup2(null, sys.stdin.fileno())
2521
1865
if null > 2:
2522
1866
os.close(null)
1867
else:
1868
# No console logging
1869
logger.removeHandler(console)
2523
1870
2524
1871
# Need to fork before connecting to D-Bus
2525
if not foreground:
1872
if not debug:
2526
1873
# Close all input and output, do double fork, etc.
2527
1874
daemon()
2528
1875
2529
# multiprocessing will use threads, so before we use gobject we
2530
# need to inform gobject that threads will be used.
2531
gobject.threads_init()
2532
2533
1876
global main_loop
2534
1877
# From the Avahi example code
2535
DBusGMainLoop(set_as_default=True)
1878
DBusGMainLoop(set_as_default=True )
2536
1879
main_loop = gobject.MainLoop()
2537
1880
bus = dbus.SystemBus()
2538
1881
# End of Avahi example code
2539
1882
if use_dbus:
2540
1883
try:
2541
bus_name = dbus.service.BusName("se.recompile.Mandos",
1884
bus_name = dbus.service.BusName("se.bsnet.fukt.Mandos",
2542
1885
bus, do_not_queue=True)
2543
old_bus_name = (dbus.service.BusName
2544
("se.bsnet.fukt.Mandos", bus,
2545
do_not_queue=True))
2546
1886
except dbus.exceptions.NameExistsException as e:
2547
logger.error("Disabling D-Bus:", exc_info=e)
1887
logger.error(unicode(e) + ", disabling D-Bus")
2548
1888
use_dbus = False
2549
1889
server_settings["use_dbus"] = False
2550
1890
tcp_server.use_dbus = False
2551
if zeroconf:
2552
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2553
service = AvahiServiceToSyslog(name =
2554
server_settings["servicename"],
2555
servicetype = "_mandos._tcp",
2556
protocol = protocol, bus = bus)
2557
if server_settings["interface"]:
2558
service.interface = (if_nametoindex
2559
(server_settings["interface"]
2560
.encode("utf-8")))
1891
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1892
service = AvahiService(name = server_settings["servicename"],
1893
servicetype = "_mandos._tcp",
1894
protocol = protocol, bus = bus)
1895
if server_settings["interface"]:
1896
service.interface = (if_nametoindex
1897
(str(server_settings["interface"])))
2561
1898
2562
1899
global multiprocessing_manager
2563
1900
multiprocessing_manager = multiprocessing.Manager()
2565
1902
client_class = Client
2566
1903
if use_dbus:
2567
1904
client_class = functools.partial(ClientDBus, bus = bus)
2568
2569
client_settings = Client.config_parser(client_config)
2570
old_client_settings = {}
2571
clients_data = {}
2572
2573
# This is used to redirect stdout and stderr for checker processes
2574
global wnull
2575
wnull = open(os.devnull, "w") # A writable /dev/null
2576
# Only used if server is running in foreground but not in debug
2577
# mode
2578
if debug or not foreground:
2579
wnull.close()
2580
2581
# Get client data and settings from last running state.
2582
if server_settings["restore"]:
2583
try:
2584
with open(stored_state_path, "rb") as stored_state:
2585
clients_data, old_client_settings = (pickle.load
2586
(stored_state))
2587
os.remove(stored_state_path)
2588
except IOError as e:
2589
if e.errno == errno.ENOENT:
2590
logger.warning("Could not load persistent state: {}"
2591
.format(os.strerror(e.errno)))
2592
else:
2593
logger.critical("Could not load persistent state:",
2594
exc_info=e)
2595
raise
2596
except EOFError as e:
2597
logger.warning("Could not load persistent state: "
2598
"EOFError:", exc_info=e)
2599
2600
with PGPEngine() as pgp:
2601
for client_name, client in clients_data.items():
2602
# Skip removed clients
2603
if client_name not in client_settings:
2604
continue
2605
2606
# Decide which value to use after restoring saved state.
2607
# We have three different values: Old config file,
2608
# new config file, and saved state.
2609
# New config value takes precedence if it differs from old
2610
# config value, otherwise use saved state.
2611
for name, value in client_settings[client_name].items():
2612
try:
2613
# For each value in new config, check if it
2614
# differs from the old config value (Except for
2615
# the "secret" attribute)
2616
if (name != "secret" and
2617
value != old_client_settings[client_name]
2618
[name]):
2619
client[name] = value
2620
except KeyError:
2621
pass
2622
2623
# Clients who has passed its expire date can still be
2624
# enabled if its last checker was successful. Clients
2625
# whose checker succeeded before we stored its state is
2626
# assumed to have successfully run all checkers during
2627
# downtime.
2628
if client["enabled"]:
2629
if datetime.datetime.utcnow() >= client["expires"]:
2630
if not client["last_checked_ok"]:
2631
logger.warning(
2632
"disabling client {} - Client never "
2633
"performed a successful checker"
2634
.format(client_name))
2635
client["enabled"] = False
2636
elif client["last_checker_status"] != 0:
2637
logger.warning(
2638
"disabling client {} - Client last"
2639
" checker failed with error code {}"
2640
.format(client_name,
2641
client["last_checker_status"]))
2642
client["enabled"] = False
2643
else:
2644
client["expires"] = (datetime.datetime
2645
.utcnow()
2646
+ client["timeout"])
2647
logger.debug("Last checker succeeded,"
2648
" keeping {} enabled"
2649
.format(client_name))
1905
def client_config_items(config, section):
1906
special_settings = {
1907
"approved_by_default":
1908
lambda: config.getboolean(section,
1909
"approved_by_default"),
1910
}
1911
for name, value in config.items(section):
2650
1912
try:
2651
client["secret"] = (
2652
pgp.decrypt(client["encrypted_secret"],
2653
client_settings[client_name]
2654
["secret"]))
2655
except PGPError:
2656
# If decryption fails, we use secret from new settings
2657
logger.debug("Failed to decrypt {} old secret"
2658
.format(client_name))
2659
client["secret"] = (
2660
client_settings[client_name]["secret"])
2661
2662
# Add/remove clients based on new changes made to config
2663
for client_name in (set(old_client_settings)
2664
- set(client_settings)):
2665
del clients_data[client_name]
2666
for client_name in (set(client_settings)
2667
- set(old_client_settings)):
2668
clients_data[client_name] = client_settings[client_name]
2669
2670
# Create all client objects
2671
for client_name, client in clients_data.items():
2672
tcp_server.clients[client_name] = client_class(
2673
name = client_name, settings = client,
2674
server_settings = server_settings)
2675
1913
yield (name, special_settings[name]())
1914
except KeyError:
1915
yield (name, value)
1916
1917
tcp_server.clients.update(set(
1918
client_class(name = section,
1919
config= dict(client_config_items(
1920
client_config, section)))
1921
for section in client_config.sections()))
2676
1922
if not tcp_server.clients:
2677
1923
logger.warning("No clients defined")
2678
2679
if not foreground:
2680
if pidfile is not None:
2681
try:
2682
with pidfile:
2683
pid = os.getpid()
2684
pidfile.write("{}\n".format(pid).encode("utf-8"))
2685
except IOError:
2686
logger.error("Could not write to file %r with PID %d",
2687
pidfilename, pid)
2688
del pidfile
1924
1925
if not debug:
1926
try:
1927
with pidfile:
1928
pid = os.getpid()
1929
pidfile.write(str(pid) + "\n".encode("utf-8"))
1930
del pidfile
1931
except IOError:
1932
logger.error("Could not write to file %r with PID %d",
1933
pidfilename, pid)
1934
except NameError:
1935
# "pidfile" was never created
1936
pass
2689
1937
del pidfilename
1938
1939
signal.signal(signal.SIGINT, signal.SIG_IGN)
2690
1940
2691
1941
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2692
1942
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2693
1943
2694
1944
if use_dbus:
2695
@alternate_dbus_interfaces({"se.recompile.Mandos":
2696
"se.bsnet.fukt.Mandos"})
2697
class MandosDBusService(DBusObjectWithProperties):
1945
class MandosDBusService(dbus.service.Object):
2698
1946
"""A D-Bus proxy object"""
2699
1947
def __init__(self):
2700
1948
dbus.service.Object.__init__(self, bus, "/")
2701
_interface = "se.recompile.Mandos"
2702
2703
@dbus_interface_annotations(_interface)
2704
def _foo(self):
2705
return { "org.freedesktop.DBus.Property"
2706
".EmitsChangedSignal":
2707
"false"}
1949
_interface = "se.bsnet.fukt.Mandos"
2708
1950
2709
1951
@dbus.service.signal(_interface, signature="o")
2710
1952
def ClientAdded(self, objpath):
2725
1967
def GetAllClients(self):
2726
1968
"D-Bus method"
2727
1969
return dbus.Array(c.dbus_object_path
2728
for c in
2729
tcp_server.clients.itervalues())
1970
for c in tcp_server.clients)
2730
1971
2731
1972
@dbus.service.method(_interface,
2732
1973
out_signature="a{oa{sv}}")
2733
1974
def GetAllClientsWithProperties(self):
2734
1975
"D-Bus method"
2735
1976
return dbus.Dictionary(
2736
{ c.dbus_object_path: c.GetAll("")
2737
for c in tcp_server.clients.itervalues() },
1977
((c.dbus_object_path, c.GetAll(""))
1978
for c in tcp_server.clients),
2738
1979
signature="oa{sv}")
2739
1980
2740
1981
@dbus.service.method(_interface, in_signature="o")
2741
1982
def RemoveClient(self, object_path):
2742
1983
"D-Bus method"
2743
for c in tcp_server.clients.itervalues():
1984
for c in tcp_server.clients:
2744
1985
if c.dbus_object_path == object_path:
2745
del tcp_server.clients[c.name]
1986
tcp_server.clients.remove(c)
2746
1987
c.remove_from_connection()
2747
1988
# Don't signal anything except ClientRemoved
2748
1989
c.disable(quiet=True)
2757
1998
2758
1999
def cleanup():
2759
2000
"Cleanup function; run on exit"
2760
if zeroconf:
2761
service.cleanup()
2762
2763
multiprocessing.active_children()
2764
wnull.close()
2765
if not (tcp_server.clients or client_settings):
2766
return
2767
2768
# Store client before exiting. Secrets are encrypted with key
2769
# based on what config file has. If config file is
2770
# removed/edited, old secret will thus be unrecovable.
2771
clients = {}
2772
with PGPEngine() as pgp:
2773
for client in tcp_server.clients.itervalues():
2774
key = client_settings[client.name]["secret"]
2775
client.encrypted_secret = pgp.encrypt(client.secret,
2776
key)
2777
client_dict = {}
2778
2779
# A list of attributes that can not be pickled
2780
# + secret.
2781
exclude = { "bus", "changedstate", "secret",
2782
"checker", "server_settings" }
2783
for name, typ in (inspect.getmembers
2784
(dbus.service.Object)):
2785
exclude.add(name)
2786
2787
client_dict["encrypted_secret"] = (client
2788
.encrypted_secret)
2789
for attr in client.client_structure:
2790
if attr not in exclude:
2791
client_dict[attr] = getattr(client, attr)
2792
2793
clients[client.name] = client_dict
2794
del client_settings[client.name]["secret"]
2795
2796
try:
2797
with (tempfile.NamedTemporaryFile
2798
(mode='wb', suffix=".pickle", prefix='clients-',
2799
dir=os.path.dirname(stored_state_path),
2800
delete=False)) as stored_state:
2801
pickle.dump((clients, client_settings), stored_state)
2802
tempname=stored_state.name
2803
os.rename(tempname, stored_state_path)
2804
except (IOError, OSError) as e:
2805
if not debug:
2806
try:
2807
os.remove(tempname)
2808
except NameError:
2809
pass
2810
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
2811
logger.warning("Could not save persistent state: {}"
2812
.format(os.strerror(e.errno)))
2813
else:
2814
logger.warning("Could not save persistent state:",
2815
exc_info=e)
2816
raise
2817
2818
# Delete all clients, and settings from config
2001
service.cleanup()
2002
2819
2003
while tcp_server.clients:
2820
name, client = tcp_server.clients.popitem()
2004
client = tcp_server.clients.pop()
2821
2005
if use_dbus:
2822
2006
client.remove_from_connection()
2007
client.disable_hook = None
2823
2008
# Don't signal anything except ClientRemoved
2824
2009
client.disable(quiet=True)
2825
2010
if use_dbus:
2826
2011
# Emit D-Bus signal
2827
mandos_dbus_service.ClientRemoved(client
2828
.dbus_object_path,
2012
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
2829
2013
client.name)
2830
client_settings.clear()
2831
2014
2832
2015
atexit.register(cleanup)
2833
2016
2834
for client in tcp_server.clients.itervalues():
2017
for client in tcp_server.clients:
2835
2018
if use_dbus:
2836
2019
# Emit D-Bus signal
2837
2020
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2838
# Need to initiate checking of clients
2839
if client.enabled:
2840
client.init_checker()
2021
client.enable()
2841
2022
2842
2023
tcp_server.enable()
2843
2024
tcp_server.server_activate()
2844
2025
2845
2026
# Find out what port we got
2846
if zeroconf:
2847
service.port = tcp_server.socket.getsockname()[1]
2027
service.port = tcp_server.socket.getsockname()[1]
2848
2028
if use_ipv6:
2849
2029
logger.info("Now listening on address %r, port %d,"
2850
" flowinfo %d, scope_id %d",
2851
*tcp_server.socket.getsockname())
2030
" flowinfo %d, scope_id %d"
2031
% tcp_server.socket.getsockname())
2852
2032
else: # IPv4
2853
logger.info("Now listening on address %r, port %d",
2854
*tcp_server.socket.getsockname())
2033
logger.info("Now listening on address %r, port %d"
2034
% tcp_server.socket.getsockname())
2855
2035
2856
2036
#service.interface = tcp_server.socket.getsockname()[3]
2857
2037
2858
2038
try:
2859
if zeroconf:
2860
# From the Avahi example code
2861
try:
2862
service.activate()
2863
except dbus.exceptions.DBusException as error:
2864
logger.critical("D-Bus Exception", exc_info=error)
2865
cleanup()
2866
sys.exit(1)
2867
# End of Avahi example code
2039
# From the Avahi example code
2040
try:
2041
service.activate()
2042
except dbus.exceptions.DBusException as error:
2043
logger.critical("DBusException: %s", error)
2044
cleanup()
2045
sys.exit(1)
2046
# End of Avahi example code
2868
2047
2869
2048
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2870
2049
lambda *args, **kwargs:
2874
2053
logger.debug("Starting main loop")
2875
2054
main_loop.run()
2876
2055
except AvahiError as error:
2877
logger.critical("Avahi Error", exc_info=error)
2056
logger.critical("AvahiError: %s", error)
2878
2057
cleanup()
2879
2058
sys.exit(1)
2880
2059
except KeyboardInterrupt:
2885
2064
# Must run before the D-Bus bus name gets deregistered
2886
2065
cleanup()
2887
2066
2067
2888
2068
if __name__ == '__main__':
2889
2069
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0