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- Committer: Teddy Hogeborn
- Date: 2011-09-26 19:36:18 UTC
- mfrom: (24.1.184 mandos)
- Revision ID: teddy@fukt.bsnet.se-20110926193618-vtj5c9hena1maixx
Merge from Björn
- 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
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2
# -*- mode: python; coding: utf-8 -*-
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#
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# Mandos server - give out binary blobs to connecting clients.
11
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# "AvahiService" class, and some lines in "main".
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#
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# Everything else is
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# Copyright © 2008-2014 Teddy Hogeborn
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# Copyright © 2008-2014 Björn Påhlsson
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# Copyright © 2008-2011 Teddy Hogeborn
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# Copyright © 2008-2011 Björn Påhlsson
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# along with this program. If not, see
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# <http://www.gnu.org/licenses/>.
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#
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# Contact the authors at <mandos@recompile.se>.
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# Contact the authors at <mandos@fukt.bsnet.se>.
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#
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34
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from __future__ import (division, absolute_import, print_function,
35
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unicode_literals)
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36
37
from future_builtins import *
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39
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import SocketServer as socketserver
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import socket
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39
import argparse
64
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import functools
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63
import cPickle as pickle
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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
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SO_BINDTODEVICE = None
90
83
91
version = "1.6.7"
92
stored_state_file = "clients.pickle"
93
94
logger = logging.getLogger()
95
syslogger = None
96
97
try:
98
if_nametoindex = (ctypes.cdll.LoadLibrary
99
(ctypes.util.find_library("c"))
100
.if_nametoindex)
101
except (OSError, AttributeError):
102
def if_nametoindex(interface):
103
"Get an interface index the hard way, i.e. using fcntl()"
104
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
105
with contextlib.closing(socket.socket()) as s:
106
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
107
struct.pack(str("16s16x"),
108
interface))
109
interface_index = struct.unpack(str("I"),
110
ifreq[16:20])[0]
111
return interface_index
112
113
114
def initlogger(debug, level=logging.WARNING):
115
"""init logger and add loglevel"""
116
117
global syslogger
118
syslogger = (logging.handlers.SysLogHandler
119
(facility =
120
logging.handlers.SysLogHandler.LOG_DAEMON,
121
address = str("/dev/log")))
122
syslogger.setFormatter(logging.Formatter
123
('Mandos [%(process)d]: %(levelname)s:'
124
' %(message)s'))
125
logger.addHandler(syslogger)
126
127
if debug:
128
console = logging.StreamHandler()
129
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
130
' [%(process)d]:'
131
' %(levelname)s:'
132
' %(message)s'))
133
logger.addHandler(console)
134
logger.setLevel(level)
135
136
137
class PGPError(Exception):
138
"""Exception if encryption/decryption fails"""
139
pass
140
141
142
class PGPEngine(object):
143
"""A simple class for OpenPGP symmetric encryption & decryption"""
144
def __init__(self):
145
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
146
self.gnupgargs = ['--batch',
147
'--home', self.tempdir,
148
'--force-mdc',
149
'--quiet',
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'--no-use-agent']
151
152
def __enter__(self):
153
return self
154
155
def __exit__(self, exc_type, exc_value, traceback):
156
self._cleanup()
157
return False
158
159
def __del__(self):
160
self._cleanup()
161
162
def _cleanup(self):
163
if self.tempdir is not None:
164
# Delete contents of tempdir
165
for root, dirs, files in os.walk(self.tempdir,
166
topdown = False):
167
for filename in files:
168
os.remove(os.path.join(root, filename))
169
for dirname in dirs:
170
os.rmdir(os.path.join(root, dirname))
171
# Remove tempdir
172
os.rmdir(self.tempdir)
173
self.tempdir = None
174
175
def password_encode(self, password):
176
# Passphrase can not be empty and can not contain newlines or
177
# NUL bytes. So we prefix it and hex encode it.
178
encoded = b"mandos" + binascii.hexlify(password)
179
if len(encoded) > 2048:
180
# GnuPG can't handle long passwords, so encode differently
181
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
182
.replace(b"\n", b"\\n")
183
.replace(b"\0", b"\\x00"))
184
return encoded
185
186
def encrypt(self, data, password):
187
passphrase = self.password_encode(password)
188
with tempfile.NamedTemporaryFile(dir=self.tempdir
189
) as passfile:
190
passfile.write(passphrase)
191
passfile.flush()
192
proc = subprocess.Popen(['gpg', '--symmetric',
193
'--passphrase-file',
194
passfile.name]
195
+ self.gnupgargs,
196
stdin = subprocess.PIPE,
197
stdout = subprocess.PIPE,
198
stderr = subprocess.PIPE)
199
ciphertext, err = proc.communicate(input = data)
200
if proc.returncode != 0:
201
raise PGPError(err)
202
return ciphertext
203
204
def decrypt(self, data, password):
205
passphrase = self.password_encode(password)
206
with tempfile.NamedTemporaryFile(dir = self.tempdir
207
) as passfile:
208
passfile.write(passphrase)
209
passfile.flush()
210
proc = subprocess.Popen(['gpg', '--decrypt',
211
'--passphrase-file',
212
passfile.name]
213
+ self.gnupgargs,
214
stdin = subprocess.PIPE,
215
stdout = subprocess.PIPE,
216
stderr = subprocess.PIPE)
217
decrypted_plaintext, err = proc.communicate(input
218
= data)
219
if proc.returncode != 0:
220
raise PGPError(err)
221
return decrypted_plaintext
222
84
85
version = "1.3.1"
86
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#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
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console = logging.StreamHandler()
98
console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'
99
' %(levelname)s:'
100
' %(message)s'))
101
logger.addHandler(console)
223
102
224
103
class AvahiError(Exception):
225
104
def __init__(self, value, *args, **kwargs):
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
155
def rename(self):
279
156
"""Derived from the Avahi example code"""
280
157
if self.rename_count >= self.max_renames:
282
159
" after %i retries, exiting.",
283
160
self.rename_count)
284
161
raise AvahiServiceError("Too many renames")
285
self.name = unicode(self.server
286
.GetAlternativeServiceName(self.name))
162
self.name = unicode(self.server.GetAlternativeServiceName(self.name))
287
163
logger.info("Changing Zeroconf service name to %r ...",
288
164
self.name)
165
syslogger.setFormatter(logging.Formatter
166
('Mandos (%s) [%%(process)d]:'
167
' %%(levelname)s: %%(message)s'
168
% self.name))
289
169
self.remove()
290
170
try:
291
171
self.add()
292
172
except dbus.exceptions.DBusException as error:
293
logger.critical("D-Bus Exception", exc_info=error)
173
logger.critical("DBusException: %s", error)
294
174
self.cleanup()
295
175
os._exit(1)
296
176
self.rename_count += 1
297
298
177
def remove(self):
299
178
"""Derived from the Avahi example code"""
300
179
if self.entry_group_state_changed_match is not None:
302
181
self.entry_group_state_changed_match = None
303
182
if self.group is not None:
304
183
self.group.Reset()
305
306
184
def add(self):
307
185
"""Derived from the Avahi example code"""
308
186
self.remove()
313
191
avahi.DBUS_INTERFACE_ENTRY_GROUP)
314
192
self.entry_group_state_changed_match = (
315
193
self.group.connect_to_signal(
316
'StateChanged', self.entry_group_state_changed))
194
'StateChanged', self .entry_group_state_changed))
317
195
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
318
196
self.name, self.type)
319
197
self.group.AddService(
325
203
dbus.UInt16(self.port),
326
204
avahi.string_array_to_txt_array(self.TXT))
327
205
self.group.Commit()
328
329
206
def entry_group_state_changed(self, state, error):
330
207
"""Derived from the Avahi example code"""
331
208
logger.debug("Avahi entry group state change: %i", state)
338
215
elif state == avahi.ENTRY_GROUP_FAILURE:
339
216
logger.critical("Avahi: Error in group state changed %s",
340
217
unicode(error))
341
raise AvahiGroupError("State changed: {0!s}"
342
.format(error))
343
218
raise AvahiGroupError("State changed: %s"
219
% unicode(error))
344
220
def cleanup(self):
345
221
"""Derived from the Avahi example code"""
346
222
if self.group is not None:
347
223
try:
348
224
self.group.Free()
349
225
except (dbus.exceptions.UnknownMethodException,
350
dbus.exceptions.DBusException):
226
dbus.exceptions.DBusException) as e:
351
227
pass
352
228
self.group = None
353
229
self.remove()
354
355
230
def server_state_changed(self, state, error=None):
356
231
"""Derived from the Avahi example code"""
357
232
logger.debug("Avahi server state change: %i", state)
376
251
logger.debug("Unknown state: %r", state)
377
252
else:
378
253
logger.debug("Unknown state: %r: %r", state, error)
379
380
254
def activate(self):
381
255
"""Derived from the Avahi example code"""
382
256
if self.server is None:
390
264
self.server_state_changed(self.server.GetState())
391
265
392
266
393
class AvahiServiceToSyslog(AvahiService):
394
def rename(self):
395
"""Add the new name to the syslog messages"""
396
ret = AvahiService.rename(self)
397
syslogger.setFormatter(logging.Formatter
398
('Mandos ({0}) [%(process)d]:'
399
' %(levelname)s: %(message)s'
400
.format(self.name)))
401
return ret
402
403
404
def timedelta_to_milliseconds(td):
267
def _timedelta_to_milliseconds(td):
405
268
"Convert a datetime.timedelta() to milliseconds"
406
269
return ((td.days * 24 * 60 * 60 * 1000)
407
270
+ (td.seconds * 1000)
408
271
+ (td.microseconds // 1000))
409
410
272
411
273
class Client(object):
412
274
"""A representation of a client host served by this server.
413
275
414
276
Attributes:
415
approved: bool(); 'None' if not yet approved/disapproved
277
_approved: bool(); 'None' if not yet approved/disapproved
416
278
approval_delay: datetime.timedelta(); Time to wait for approval
417
279
approval_duration: datetime.timedelta(); Duration of one approval
418
280
checker: subprocess.Popen(); a running checker process used
425
287
instance %(name)s can be used in the command.
426
288
checker_initiator_tag: a gobject event source tag, or None
427
289
created: datetime.datetime(); (UTC) object creation
428
client_structure: Object describing what attributes a client has
429
and is used for storing the client at exit
430
290
current_checker_command: string; current running checker_command
291
disable_hook: If set, called by disable() as disable_hook(self)
431
292
disable_initiator_tag: a gobject event source tag, or None
432
293
enabled: bool()
433
294
fingerprint: string (40 or 32 hexadecimal digits); used to
436
297
interval: datetime.timedelta(); How often to start a new checker
437
298
last_approval_request: datetime.datetime(); (UTC) or None
438
299
last_checked_ok: datetime.datetime(); (UTC) or None
439
last_checker_status: integer between 0 and 255 reflecting exit
440
status of last checker. -1 reflects crashed
441
checker, -2 means no checker completed yet.
442
last_enabled: datetime.datetime(); (UTC) or None
300
last_enabled: datetime.datetime(); (UTC)
443
301
name: string; from the config file, used in log messages and
444
302
D-Bus identifiers
445
303
secret: bytestring; sent verbatim (over TLS) to client
446
304
timeout: datetime.timedelta(); How long from last_checked_ok
447
305
until this client is disabled
448
extended_timeout: extra long timeout when secret has been sent
306
extended_timeout: extra long timeout when password has been sent
449
307
runtime_expansions: Allowed attributes for runtime expansion.
450
308
expires: datetime.datetime(); time (UTC) when a client will be
451
309
disabled, or None
452
server_settings: The server_settings dict from main()
453
310
"""
454
311
455
312
runtime_expansions = ("approval_delay", "approval_duration",
456
"created", "enabled", "expires",
457
"fingerprint", "host", "interval",
458
"last_approval_request", "last_checked_ok",
313
"created", "enabled", "fingerprint",
314
"host", "interval", "last_checked_ok",
459
315
"last_enabled", "name", "timeout")
460
client_defaults = { "timeout": "PT5M",
461
"extended_timeout": "PT15M",
462
"interval": "PT2M",
463
"checker": "fping -q -- %%(host)s",
464
"host": "",
465
"approval_delay": "PT0S",
466
"approval_duration": "PT1S",
467
"approved_by_default": "True",
468
"enabled": "True",
469
}
470
316
471
317
def timeout_milliseconds(self):
472
318
"Return the 'timeout' attribute in milliseconds"
473
return timedelta_to_milliseconds(self.timeout)
474
319
return _timedelta_to_milliseconds(self.timeout)
320
475
321
def extended_timeout_milliseconds(self):
476
322
"Return the 'extended_timeout' attribute in milliseconds"
477
return timedelta_to_milliseconds(self.extended_timeout)
323
return _timedelta_to_milliseconds(self.extended_timeout)
478
324
479
325
def interval_milliseconds(self):
480
326
"Return the 'interval' attribute in milliseconds"
481
return timedelta_to_milliseconds(self.interval)
482
327
return _timedelta_to_milliseconds(self.interval)
328
483
329
def approval_delay_milliseconds(self):
484
return timedelta_to_milliseconds(self.approval_delay)
485
486
@staticmethod
487
def config_parser(config):
488
"""Construct a new dict of client settings of this form:
489
{ client_name: {setting_name: value, ...}, ...}
490
with exceptions for any special settings as defined above.
491
NOTE: Must be a pure function. Must return the same result
492
value given the same arguments.
493
"""
494
settings = {}
495
for client_name in config.sections():
496
section = dict(config.items(client_name))
497
client = settings[client_name] = {}
498
499
client["host"] = section["host"]
500
# Reformat values from string types to Python types
501
client["approved_by_default"] = config.getboolean(
502
client_name, "approved_by_default")
503
client["enabled"] = config.getboolean(client_name,
504
"enabled")
505
506
client["fingerprint"] = (section["fingerprint"].upper()
507
.replace(" ", ""))
508
if "secret" in section:
509
client["secret"] = section["secret"].decode("base64")
510
elif "secfile" in section:
511
with open(os.path.expanduser(os.path.expandvars
512
(section["secfile"])),
513
"rb") as secfile:
514
client["secret"] = secfile.read()
515
else:
516
raise TypeError("No secret or secfile for section {0}"
517
.format(section))
518
client["timeout"] = string_to_delta(section["timeout"])
519
client["extended_timeout"] = string_to_delta(
520
section["extended_timeout"])
521
client["interval"] = string_to_delta(section["interval"])
522
client["approval_delay"] = string_to_delta(
523
section["approval_delay"])
524
client["approval_duration"] = string_to_delta(
525
section["approval_duration"])
526
client["checker_command"] = section["checker"]
527
client["last_approval_request"] = None
528
client["last_checked_ok"] = None
529
client["last_checker_status"] = -2
530
531
return settings
532
533
def __init__(self, settings, name = None, server_settings=None):
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."""
534
336
self.name = name
535
if server_settings is None:
536
server_settings = {}
537
self.server_settings = server_settings
538
# adding all client settings
539
for setting, value in settings.iteritems():
540
setattr(self, setting, value)
541
542
if self.enabled:
543
if not hasattr(self, "last_enabled"):
544
self.last_enabled = datetime.datetime.utcnow()
545
if not hasattr(self, "expires"):
546
self.expires = (datetime.datetime.utcnow()
547
+ self.timeout)
548
else:
549
self.last_enabled = None
550
self.expires = None
551
337
if config is None:
338
config = {}
552
339
logger.debug("Creating client %r", self.name)
553
340
# Uppercase and remove spaces from fingerprint for later
554
341
# comparison purposes with return value from the fingerprint()
555
342
# function
343
self.fingerprint = (config["fingerprint"].upper()
344
.replace(" ", ""))
556
345
logger.debug(" Fingerprint: %s", self.fingerprint)
557
self.created = settings.get("created",
558
datetime.datetime.utcnow())
559
560
# 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
561
366
self.checker = None
562
367
self.checker_initiator_tag = None
563
368
self.disable_initiator_tag = None
369
self.expires = None
564
370
self.checker_callback_tag = None
371
self.checker_command = config["checker"]
565
372
self.current_checker_command = None
566
self.approved = None
373
self.last_connect = None
374
self._approved = None
375
self.approved_by_default = config.get("approved_by_default",
376
True)
567
377
self.approvals_pending = 0
568
self.changedstate = (multiprocessing_manager
569
.Condition(multiprocessing_manager
570
.Lock()))
571
self.client_structure = [attr for attr in
572
self.__dict__.iterkeys()
573
if not attr.startswith("_")]
574
self.client_structure.append("client_structure")
575
576
for name, t in inspect.getmembers(type(self),
577
lambda obj:
578
isinstance(obj,
579
property)):
580
if not name.startswith("_"):
581
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())
582
383
583
# Send notice to process children that client state has changed
584
384
def send_changedstate(self):
585
with self.changedstate:
586
self.changedstate.notify_all()
587
385
self.changedstate.acquire()
386
self.changedstate.notify_all()
387
self.changedstate.release()
388
588
389
def enable(self):
589
390
"""Start this client's checker and timeout hooks"""
590
391
if getattr(self, "enabled", False):
591
392
# Already enabled
592
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
593
401
self.expires = datetime.datetime.utcnow() + self.timeout
402
self.disable_initiator_tag = (gobject.timeout_add
403
(self.timeout_milliseconds(),
404
self.disable))
594
405
self.enabled = True
595
406
self.last_enabled = datetime.datetime.utcnow()
596
self.init_checker()
597
self.send_changedstate()
407
# Also start a new checker *right now*.
408
self.start_checker()
598
409
599
410
def disable(self, quiet=True):
600
411
"""Disable this client."""
601
412
if not getattr(self, "enabled", False):
602
413
return False
603
414
if not quiet:
415
self.send_changedstate()
416
if not quiet:
604
417
logger.info("Disabling client %s", self.name)
605
if getattr(self, "disable_initiator_tag", None) is not None:
418
if getattr(self, "disable_initiator_tag", False):
606
419
gobject.source_remove(self.disable_initiator_tag)
607
420
self.disable_initiator_tag = None
608
421
self.expires = None
609
if getattr(self, "checker_initiator_tag", None) is not None:
422
if getattr(self, "checker_initiator_tag", False):
610
423
gobject.source_remove(self.checker_initiator_tag)
611
424
self.checker_initiator_tag = None
612
425
self.stop_checker()
426
if self.disable_hook:
427
self.disable_hook(self)
613
428
self.enabled = False
614
if not quiet:
615
self.send_changedstate()
616
429
# Do not run this again if called by a gobject.timeout_add
617
430
return False
618
431
619
432
def __del__(self):
433
self.disable_hook = None
620
434
self.disable()
621
435
622
def init_checker(self):
623
# Schedule a new checker to be started an 'interval' from now,
624
# and every interval from then on.
625
if self.checker_initiator_tag is not None:
626
gobject.source_remove(self.checker_initiator_tag)
627
self.checker_initiator_tag = (gobject.timeout_add
628
(self.interval_milliseconds(),
629
self.start_checker))
630
# Schedule a disable() when 'timeout' has passed
631
if self.disable_initiator_tag is not None:
632
gobject.source_remove(self.disable_initiator_tag)
633
self.disable_initiator_tag = (gobject.timeout_add
634
(self.timeout_milliseconds(),
635
self.disable))
636
# Also start a new checker *right now*.
637
self.start_checker()
638
639
436
def checker_callback(self, pid, condition, command):
640
437
"""The checker has completed, so take appropriate actions."""
641
438
self.checker_callback_tag = None
642
439
self.checker = None
643
440
if os.WIFEXITED(condition):
644
self.last_checker_status = os.WEXITSTATUS(condition)
645
if self.last_checker_status == 0:
441
exitstatus = os.WEXITSTATUS(condition)
442
if exitstatus == 0:
646
443
logger.info("Checker for %(name)s succeeded",
647
444
vars(self))
648
445
self.checked_ok()
650
447
logger.info("Checker for %(name)s failed",
651
448
vars(self))
652
449
else:
653
self.last_checker_status = -1
654
450
logger.warning("Checker for %(name)s crashed?",
655
451
vars(self))
656
452
657
def checked_ok(self):
658
"""Assert that the client has been seen, alive and well."""
659
self.last_checked_ok = datetime.datetime.utcnow()
660
self.last_checker_status = 0
661
self.bump_timeout()
662
663
def bump_timeout(self, timeout=None):
664
"""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
"""
665
459
if timeout is None:
666
460
timeout = self.timeout
667
if self.disable_initiator_tag is not None:
668
gobject.source_remove(self.disable_initiator_tag)
669
self.disable_initiator_tag = None
670
if getattr(self, "enabled", False):
671
self.disable_initiator_tag = (gobject.timeout_add
672
(timedelta_to_milliseconds
673
(timeout), self.disable))
674
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))
675
467
676
468
def need_approval(self):
677
469
self.last_approval_request = datetime.datetime.utcnow()
682
474
If a checker already exists, leave it running and do
683
475
nothing."""
684
476
# The reason for not killing a running checker is that if we
685
# did that, and if a checker (for some reason) started running
686
# slowly and taking more than 'interval' time, then the client
687
# would inevitably timeout, since no checker would get a
688
# 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
689
481
# checkers alone, the checker would have to take more time
690
482
# than 'timeout' for the client to be disabled, which is as it
691
483
# should be.
693
485
# If a checker exists, make sure it is not a zombie
694
486
try:
695
487
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
696
except AttributeError:
697
pass
698
except OSError as error:
699
if error.errno != errno.ECHILD:
700
raise
488
except (AttributeError, OSError) as error:
489
if (isinstance(error, OSError)
490
and error.errno != errno.ECHILD):
491
raise error
701
492
else:
702
493
if pid:
703
494
logger.warning("Checker was a zombie")
706
497
self.current_checker_command)
707
498
# Start a new checker if needed
708
499
if self.checker is None:
709
# Escape attributes for the shell
710
escaped_attrs = dict(
711
(attr, re.escape(unicode(getattr(self, attr))))
712
for attr in
713
self.runtime_expansions)
714
500
try:
715
command = self.checker_command % escaped_attrs
716
except TypeError as error:
717
logger.error('Could not format string "%s"',
718
self.checker_command, exc_info=error)
719
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
720
519
self.current_checker_command = command
721
520
try:
722
521
logger.info("Starting checker %r for %s",
725
524
# in normal mode, that is already done by daemon(),
726
525
# and in debug mode we don't want to. (Stdin is
727
526
# always replaced by /dev/null.)
728
# The exception is when not debugging but nevertheless
729
# running in the foreground; use the previously
730
# created wnull.
731
popen_args = {}
732
if (not self.server_settings["debug"]
733
and self.server_settings["foreground"]):
734
popen_args.update({"stdout": wnull,
735
"stderr": wnull })
736
527
self.checker = subprocess.Popen(command,
737
528
close_fds=True,
738
shell=True, cwd="/",
739
**popen_args)
740
except OSError as error:
741
logger.error("Failed to start subprocess",
742
exc_info=error)
743
return True
744
self.checker_callback_tag = (gobject.child_watch_add
745
(self.checker.pid,
746
self.checker_callback,
747
data=command))
748
# The checker may have completed before the gobject
749
# watch was added. Check for this.
750
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.
751
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)
752
540
except OSError as error:
753
if error.errno == errno.ECHILD:
754
# This should never happen
755
logger.error("Child process vanished",
756
exc_info=error)
757
return True
758
raise
759
if pid:
760
gobject.source_remove(self.checker_callback_tag)
761
self.checker_callback(pid, status, command)
541
logger.error("Failed to start subprocess: %s",
542
error)
762
543
# Re-run this periodically if run by gobject.timeout_add
763
544
return True
764
545
771
552
return
772
553
logger.debug("Stopping checker for %(name)s", vars(self))
773
554
try:
774
self.checker.terminate()
555
os.kill(self.checker.pid, signal.SIGTERM)
775
556
#time.sleep(0.5)
776
557
#if self.checker.poll() is None:
777
# self.checker.kill()
558
# os.kill(self.checker.pid, signal.SIGKILL)
778
559
except OSError as error:
779
560
if error.errno != errno.ESRCH: # No such process
780
561
raise
781
562
self.checker = None
782
563
783
784
564
def dbus_service_property(dbus_interface, signature="v",
785
565
access="readwrite", byte_arrays=False):
786
566
"""Decorators for marking methods of a DBusObjectWithProperties to
797
577
# "Set" method, so we fail early here:
798
578
if byte_arrays and signature != "ay":
799
579
raise ValueError("Byte arrays not supported for non-'ay'"
800
" signature {0!r}".format(signature))
580
" signature %r" % signature)
801
581
def decorator(func):
802
582
func._dbus_is_property = True
803
583
func._dbus_interface = dbus_interface
811
591
return decorator
812
592
813
593
814
def dbus_interface_annotations(dbus_interface):
815
"""Decorator for marking functions returning interface annotations
816
817
Usage:
818
819
@dbus_interface_annotations("org.example.Interface")
820
def _foo(self): # Function name does not matter
821
return {"org.freedesktop.DBus.Deprecated": "true",
822
"org.freedesktop.DBus.Property.EmitsChangedSignal":
823
"false"}
824
"""
825
def decorator(func):
826
func._dbus_is_interface = True
827
func._dbus_interface = dbus_interface
828
func._dbus_name = dbus_interface
829
return func
830
return decorator
831
832
833
def dbus_annotations(annotations):
834
"""Decorator to annotate D-Bus methods, signals or properties
835
Usage:
836
837
@dbus_service_property("org.example.Interface", signature="b",
838
access="r")
839
@dbus_annotations({{"org.freedesktop.DBus.Deprecated": "true",
840
"org.freedesktop.DBus.Property."
841
"EmitsChangedSignal": "false"})
842
def Property_dbus_property(self):
843
return dbus.Boolean(False)
844
"""
845
def decorator(func):
846
func._dbus_annotations = annotations
847
return func
848
return decorator
849
850
851
594
class DBusPropertyException(dbus.exceptions.DBusException):
852
595
"""A base class for D-Bus property-related exceptions
853
596
"""
869
612
870
613
class DBusObjectWithProperties(dbus.service.Object):
871
614
"""A D-Bus object with properties.
872
615
873
616
Classes inheriting from this can use the dbus_service_property
874
617
decorator to expose methods as D-Bus properties. It exposes the
875
618
standard Get(), Set(), and GetAll() methods on the D-Bus.
876
619
"""
877
620
878
621
@staticmethod
879
def _is_dbus_thing(thing):
880
"""Returns a function testing if an attribute is a D-Bus thing
881
882
If called like _is_dbus_thing("method") it returns a function
883
suitable for use as predicate to inspect.getmembers().
884
"""
885
return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),
886
False)
622
def _is_dbus_property(obj):
623
return getattr(obj, "_dbus_is_property", False)
887
624
888
def _get_all_dbus_things(self, thing):
625
def _get_all_dbus_properties(self):
889
626
"""Returns a generator of (name, attribute) pairs
890
627
"""
891
return ((getattr(athing.__get__(self), "_dbus_name",
892
name),
893
athing.__get__(self))
894
for cls in self.__class__.__mro__
895
for name, athing in
896
inspect.getmembers(cls,
897
self._is_dbus_thing(thing)))
628
return ((prop._dbus_name, prop)
629
for name, prop in
630
inspect.getmembers(self, self._is_dbus_property))
898
631
899
632
def _get_dbus_property(self, interface_name, property_name):
900
633
"""Returns a bound method if one exists which is a D-Bus
901
634
property with the specified name and interface.
902
635
"""
903
for cls in self.__class__.__mro__:
904
for name, value in (inspect.getmembers
905
(cls,
906
self._is_dbus_thing("property"))):
907
if (value._dbus_name == property_name
908
and value._dbus_interface == interface_name):
909
return value.__get__(self)
910
636
for name in (property_name,
637
property_name + "_dbus_property"):
638
prop = getattr(self, name, None)
639
if (prop is None
640
or not self._is_dbus_property(prop)
641
or prop._dbus_name != property_name
642
or (interface_name and prop._dbus_interface
643
and interface_name != prop._dbus_interface)):
644
continue
645
return prop
911
646
# No such property
912
647
raise DBusPropertyNotFound(self.dbus_object_path + ":"
913
648
+ interface_name + "."
937
672
# The byte_arrays option is not supported yet on
938
673
# signatures other than "ay".
939
674
if prop._dbus_signature != "ay":
940
raise ValueError("Byte arrays not supported for non-"
941
"'ay' signature {0!r}"
942
.format(prop._dbus_signature))
943
value = dbus.ByteArray(b''.join(chr(byte)
944
for byte in value))
675
raise ValueError
676
value = dbus.ByteArray(''.join(unichr(byte)
677
for byte in value))
945
678
prop(value)
946
679
947
680
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
949
682
def GetAll(self, interface_name):
950
683
"""Standard D-Bus property GetAll() method, see D-Bus
951
684
standard.
952
685
953
686
Note: Will not include properties with access="write".
954
687
"""
955
properties = {}
956
for name, prop in self._get_all_dbus_things("property"):
688
all = {}
689
for name, prop in self._get_all_dbus_properties():
957
690
if (interface_name
958
691
and interface_name != prop._dbus_interface):
959
692
# Interface non-empty but did not match
963
696
continue
964
697
value = prop()
965
698
if not hasattr(value, "variant_level"):
966
properties[name] = value
699
all[name] = value
967
700
continue
968
properties[name] = type(value)(value, variant_level=
969
value.variant_level+1)
970
return dbus.Dictionary(properties, signature="sv")
701
all[name] = type(value)(value, variant_level=
702
value.variant_level+1)
703
return dbus.Dictionary(all, signature="sv")
971
704
972
705
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
973
706
out_signature="s",
974
707
path_keyword='object_path',
975
708
connection_keyword='connection')
976
709
def Introspect(self, object_path, connection):
977
"""Overloading of standard D-Bus method.
978
979
Inserts property tags and interface annotation tags.
710
"""Standard D-Bus method, overloaded to insert property tags.
980
711
"""
981
712
xmlstring = dbus.service.Object.Introspect(self, object_path,
982
713
connection)
989
720
e.setAttribute("access", prop._dbus_access)
990
721
return e
991
722
for if_tag in document.getElementsByTagName("interface"):
992
# Add property tags
993
723
for tag in (make_tag(document, name, prop)
994
724
for name, prop
995
in self._get_all_dbus_things("property")
725
in self._get_all_dbus_properties()
996
726
if prop._dbus_interface
997
727
== if_tag.getAttribute("name")):
998
728
if_tag.appendChild(tag)
999
# Add annotation tags
1000
for typ in ("method", "signal", "property"):
1001
for tag in if_tag.getElementsByTagName(typ):
1002
annots = dict()
1003
for name, prop in (self.
1004
_get_all_dbus_things(typ)):
1005
if (name == tag.getAttribute("name")
1006
and prop._dbus_interface
1007
== if_tag.getAttribute("name")):
1008
annots.update(getattr
1009
(prop,
1010
"_dbus_annotations",
1011
{}))
1012
for name, value in annots.iteritems():
1013
ann_tag = document.createElement(
1014
"annotation")
1015
ann_tag.setAttribute("name", name)
1016
ann_tag.setAttribute("value", value)
1017
tag.appendChild(ann_tag)
1018
# Add interface annotation tags
1019
for annotation, value in dict(
1020
itertools.chain.from_iterable(
1021
annotations().iteritems()
1022
for name, annotations in
1023
self._get_all_dbus_things("interface")
1024
if name == if_tag.getAttribute("name")
1025
)).iteritems():
1026
ann_tag = document.createElement("annotation")
1027
ann_tag.setAttribute("name", annotation)
1028
ann_tag.setAttribute("value", value)
1029
if_tag.appendChild(ann_tag)
1030
729
# Add the names to the return values for the
1031
730
# "org.freedesktop.DBus.Properties" methods
1032
731
if (if_tag.getAttribute("name")
1047
746
except (AttributeError, xml.dom.DOMException,
1048
747
xml.parsers.expat.ExpatError) as error:
1049
748
logger.error("Failed to override Introspection method",
1050
exc_info=error)
749
error)
1051
750
return xmlstring
1052
751
1053
752
1054
def datetime_to_dbus(dt, variant_level=0):
753
def datetime_to_dbus (dt, variant_level=0):
1055
754
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1056
755
if dt is None:
1057
756
return dbus.String("", variant_level = variant_level)
1058
757
return dbus.String(dt.isoformat(),
1059
758
variant_level=variant_level)
1060
759
1061
1062
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1063
"""A class decorator; applied to a subclass of
1064
dbus.service.Object, it will add alternate D-Bus attributes with
1065
interface names according to the "alt_interface_names" mapping.
1066
Usage:
1067
1068
@alternate_dbus_interfaces({"org.example.Interface":
1069
"net.example.AlternateInterface"})
1070
class SampleDBusObject(dbus.service.Object):
1071
@dbus.service.method("org.example.Interface")
1072
def SampleDBusMethod():
1073
pass
1074
1075
The above "SampleDBusMethod" on "SampleDBusObject" will be
1076
reachable via two interfaces: "org.example.Interface" and
1077
"net.example.AlternateInterface", the latter of which will have
1078
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1079
"true", unless "deprecate" is passed with a False value.
1080
1081
This works for methods and signals, and also for D-Bus properties
1082
(from DBusObjectWithProperties) and interfaces (from the
1083
dbus_interface_annotations decorator).
1084
"""
1085
def wrapper(cls):
1086
for orig_interface_name, alt_interface_name in (
1087
alt_interface_names.iteritems()):
1088
attr = {}
1089
interface_names = set()
1090
# Go though all attributes of the class
1091
for attrname, attribute in inspect.getmembers(cls):
1092
# Ignore non-D-Bus attributes, and D-Bus attributes
1093
# with the wrong interface name
1094
if (not hasattr(attribute, "_dbus_interface")
1095
or not attribute._dbus_interface
1096
.startswith(orig_interface_name)):
1097
continue
1098
# Create an alternate D-Bus interface name based on
1099
# the current name
1100
alt_interface = (attribute._dbus_interface
1101
.replace(orig_interface_name,
1102
alt_interface_name))
1103
interface_names.add(alt_interface)
1104
# Is this a D-Bus signal?
1105
if getattr(attribute, "_dbus_is_signal", False):
1106
# Extract the original non-method undecorated
1107
# function by black magic
1108
nonmethod_func = (dict(
1109
zip(attribute.func_code.co_freevars,
1110
attribute.__closure__))["func"]
1111
.cell_contents)
1112
# Create a new, but exactly alike, function
1113
# object, and decorate it to be a new D-Bus signal
1114
# with the alternate D-Bus interface name
1115
new_function = (dbus.service.signal
1116
(alt_interface,
1117
attribute._dbus_signature)
1118
(types.FunctionType(
1119
nonmethod_func.func_code,
1120
nonmethod_func.func_globals,
1121
nonmethod_func.func_name,
1122
nonmethod_func.func_defaults,
1123
nonmethod_func.func_closure)))
1124
# Copy annotations, if any
1125
try:
1126
new_function._dbus_annotations = (
1127
dict(attribute._dbus_annotations))
1128
except AttributeError:
1129
pass
1130
# Define a creator of a function to call both the
1131
# original and alternate functions, so both the
1132
# original and alternate signals gets sent when
1133
# the function is called
1134
def fixscope(func1, func2):
1135
"""This function is a scope container to pass
1136
func1 and func2 to the "call_both" function
1137
outside of its arguments"""
1138
def call_both(*args, **kwargs):
1139
"""This function will emit two D-Bus
1140
signals by calling func1 and func2"""
1141
func1(*args, **kwargs)
1142
func2(*args, **kwargs)
1143
return call_both
1144
# Create the "call_both" function and add it to
1145
# the class
1146
attr[attrname] = fixscope(attribute, new_function)
1147
# Is this a D-Bus method?
1148
elif getattr(attribute, "_dbus_is_method", False):
1149
# Create a new, but exactly alike, function
1150
# object. Decorate it to be a new D-Bus method
1151
# with the alternate D-Bus interface name. Add it
1152
# to the class.
1153
attr[attrname] = (dbus.service.method
1154
(alt_interface,
1155
attribute._dbus_in_signature,
1156
attribute._dbus_out_signature)
1157
(types.FunctionType
1158
(attribute.func_code,
1159
attribute.func_globals,
1160
attribute.func_name,
1161
attribute.func_defaults,
1162
attribute.func_closure)))
1163
# Copy annotations, if any
1164
try:
1165
attr[attrname]._dbus_annotations = (
1166
dict(attribute._dbus_annotations))
1167
except AttributeError:
1168
pass
1169
# Is this a D-Bus property?
1170
elif getattr(attribute, "_dbus_is_property", False):
1171
# Create a new, but exactly alike, function
1172
# object, and decorate it to be a new D-Bus
1173
# property with the alternate D-Bus interface
1174
# name. Add it to the class.
1175
attr[attrname] = (dbus_service_property
1176
(alt_interface,
1177
attribute._dbus_signature,
1178
attribute._dbus_access,
1179
attribute
1180
._dbus_get_args_options
1181
["byte_arrays"])
1182
(types.FunctionType
1183
(attribute.func_code,
1184
attribute.func_globals,
1185
attribute.func_name,
1186
attribute.func_defaults,
1187
attribute.func_closure)))
1188
# Copy annotations, if any
1189
try:
1190
attr[attrname]._dbus_annotations = (
1191
dict(attribute._dbus_annotations))
1192
except AttributeError:
1193
pass
1194
# Is this a D-Bus interface?
1195
elif getattr(attribute, "_dbus_is_interface", False):
1196
# Create a new, but exactly alike, function
1197
# object. Decorate it to be a new D-Bus interface
1198
# with the alternate D-Bus interface name. Add it
1199
# to the class.
1200
attr[attrname] = (dbus_interface_annotations
1201
(alt_interface)
1202
(types.FunctionType
1203
(attribute.func_code,
1204
attribute.func_globals,
1205
attribute.func_name,
1206
attribute.func_defaults,
1207
attribute.func_closure)))
1208
if deprecate:
1209
# Deprecate all alternate interfaces
1210
iname="_AlternateDBusNames_interface_annotation{0}"
1211
for interface_name in interface_names:
1212
@dbus_interface_annotations(interface_name)
1213
def func(self):
1214
return { "org.freedesktop.DBus.Deprecated":
1215
"true" }
1216
# Find an unused name
1217
for aname in (iname.format(i)
1218
for i in itertools.count()):
1219
if aname not in attr:
1220
attr[aname] = func
1221
break
1222
if interface_names:
1223
# Replace the class with a new subclass of it with
1224
# methods, signals, etc. as created above.
1225
cls = type(b"{0}Alternate".format(cls.__name__),
1226
(cls,), attr)
1227
return cls
1228
return wrapper
1229
1230
1231
@alternate_dbus_interfaces({"se.recompile.Mandos":
1232
"se.bsnet.fukt.Mandos"})
1233
760
class ClientDBus(Client, DBusObjectWithProperties):
1234
761
"""A Client class using D-Bus
1235
762
1244
771
# dbus.service.Object doesn't use super(), so we can't either.
1245
772
1246
773
def __init__(self, bus = None, *args, **kwargs):
774
self._approvals_pending = 0
1247
775
self.bus = bus
1248
776
Client.__init__(self, *args, **kwargs)
1249
777
# Only now, when this client is initialized, can it show up on
1255
783
("/clients/" + client_object_name))
1256
784
DBusObjectWithProperties.__init__(self, self.bus,
1257
785
self.dbus_object_path)
1258
786
1259
787
def notifychangeproperty(transform_func,
1260
788
dbus_name, type_func=lambda x: x,
1261
789
variant_level=1):
1262
""" Modify a variable so that it's a property which announces
1263
its changes to DBus.
1264
1265
transform_fun: Function that takes a value and a variant_level
1266
and transforms it to a D-Bus type.
1267
dbus_name: D-Bus name of the variable
790
""" Modify a variable so that its a property that announce its
791
changes to DBus.
792
transform_fun: Function that takes a value and transform it to
793
DBus type.
794
dbus_name: DBus name of the variable
1268
795
type_func: Function that transform the value before sending it
1269
to the D-Bus. Default: no transform
1270
variant_level: D-Bus variant level. Default: 1
796
to DBus
797
variant_level: DBus variant level. default: 1
1271
798
"""
1272
attrname = "_{0}".format(dbus_name)
799
real_value = [None,]
1273
800
def setter(self, value):
801
old_value = real_value[0]
802
real_value[0] = value
1274
803
if hasattr(self, "dbus_object_path"):
1275
if (not hasattr(self, attrname) or
1276
type_func(getattr(self, attrname, None))
1277
!= type_func(value)):
1278
dbus_value = transform_func(type_func(value),
1279
variant_level
1280
=variant_level)
804
if type_func(old_value) != type_func(real_value[0]):
805
dbus_value = transform_func(type_func(real_value[0]),
806
variant_level)
1281
807
self.PropertyChanged(dbus.String(dbus_name),
1282
808
dbus_value)
1283
setattr(self, attrname, value)
1284
1285
return property(lambda self: getattr(self, attrname), setter)
1286
809
810
return property(lambda self: real_value[0], setter)
811
812
1287
813
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1288
814
approvals_pending = notifychangeproperty(dbus.Boolean,
1289
815
"ApprovalPending",
1292
818
last_enabled = notifychangeproperty(datetime_to_dbus,
1293
819
"LastEnabled")
1294
820
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1295
type_func = lambda checker:
1296
checker is not None)
821
type_func = lambda checker: checker is not None)
1297
822
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1298
823
"LastCheckedOK")
1299
last_checker_status = notifychangeproperty(dbus.Int16,
1300
"LastCheckerStatus")
1301
last_approval_request = notifychangeproperty(
1302
datetime_to_dbus, "LastApprovalRequest")
824
last_approval_request = notifychangeproperty(datetime_to_dbus,
825
"LastApprovalRequest")
1303
826
approved_by_default = notifychangeproperty(dbus.Boolean,
1304
827
"ApprovedByDefault")
1305
approval_delay = notifychangeproperty(dbus.UInt64,
1306
"ApprovalDelay",
1307
type_func =
1308
timedelta_to_milliseconds)
1309
approval_duration = notifychangeproperty(
1310
dbus.UInt64, "ApprovalDuration",
1311
type_func = timedelta_to_milliseconds)
828
approval_delay = notifychangeproperty(dbus.UInt16, "ApprovalDelay",
829
type_func = _timedelta_to_milliseconds)
830
approval_duration = notifychangeproperty(dbus.UInt16, "ApprovalDuration",
831
type_func = _timedelta_to_milliseconds)
1312
832
host = notifychangeproperty(dbus.String, "Host")
1313
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1314
type_func =
1315
timedelta_to_milliseconds)
1316
extended_timeout = notifychangeproperty(
1317
dbus.UInt64, "ExtendedTimeout",
1318
type_func = timedelta_to_milliseconds)
1319
interval = notifychangeproperty(dbus.UInt64,
1320
"Interval",
1321
type_func =
1322
timedelta_to_milliseconds)
833
timeout = notifychangeproperty(dbus.UInt16, "Timeout",
834
type_func = _timedelta_to_milliseconds)
835
extended_timeout = notifychangeproperty(dbus.UInt16, "ExtendedTimeout",
836
type_func = _timedelta_to_milliseconds)
837
interval = notifychangeproperty(dbus.UInt16, "Interval",
838
type_func = _timedelta_to_milliseconds)
1323
839
checker_command = notifychangeproperty(dbus.String, "Checker")
1324
840
1325
841
del notifychangeproperty
1351
867
1352
868
return Client.checker_callback(self, pid, condition, command,
1353
869
*args, **kwargs)
1354
870
1355
871
def start_checker(self, *args, **kwargs):
1356
old_checker_pid = getattr(self.checker, "pid", None)
872
old_checker = self.checker
873
if self.checker is not None:
874
old_checker_pid = self.checker.pid
875
else:
876
old_checker_pid = None
1357
877
r = Client.start_checker(self, *args, **kwargs)
1358
878
# Only if new checker process was started
1359
879
if (self.checker is not None
1363
883
return r
1364
884
1365
885
def _reset_approved(self):
1366
self.approved = None
886
self._approved = None
1367
887
return False
1368
888
1369
889
def approve(self, value=True):
1370
self.approved = value
1371
gobject.timeout_add(timedelta_to_milliseconds
890
self.send_changedstate()
891
self._approved = value
892
gobject.timeout_add(_timedelta_to_milliseconds
1372
893
(self.approval_duration),
1373
894
self._reset_approved)
1374
self.send_changedstate()
895
1375
896
1376
897
## D-Bus methods, signals & properties
1377
_interface = "se.recompile.Mandos.Client"
1378
1379
## Interfaces
1380
1381
@dbus_interface_annotations(_interface)
1382
def _foo(self):
1383
return { "org.freedesktop.DBus.Property.EmitsChangedSignal":
1384
"false"}
898
_interface = "se.bsnet.fukt.Mandos.Client"
1385
899
1386
900
## Signals
1387
901
1487
1001
access="readwrite")
1488
1002
def ApprovalDuration_dbus_property(self, value=None):
1489
1003
if value is None: # get
1490
return dbus.UInt64(timedelta_to_milliseconds(
1004
return dbus.UInt64(_timedelta_to_milliseconds(
1491
1005
self.approval_duration))
1492
1006
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1493
1007
1507
1021
def Host_dbus_property(self, value=None):
1508
1022
if value is None: # get
1509
1023
return dbus.String(self.host)
1510
self.host = unicode(value)
1024
self.host = value
1511
1025
1512
1026
# Created - property
1513
1027
@dbus_service_property(_interface, signature="s", access="read")
1514
1028
def Created_dbus_property(self):
1515
return datetime_to_dbus(self.created)
1029
return dbus.String(datetime_to_dbus(self.created))
1516
1030
1517
1031
# LastEnabled - property
1518
1032
@dbus_service_property(_interface, signature="s", access="read")
1539
1053
return
1540
1054
return datetime_to_dbus(self.last_checked_ok)
1541
1055
1542
# LastCheckerStatus - property
1543
@dbus_service_property(_interface, signature="n",
1544
access="read")
1545
def LastCheckerStatus_dbus_property(self):
1546
return dbus.Int16(self.last_checker_status)
1547
1548
1056
# Expires - property
1549
1057
@dbus_service_property(_interface, signature="s", access="read")
1550
1058
def Expires_dbus_property(self):
1561
1069
def Timeout_dbus_property(self, value=None):
1562
1070
if value is None: # get
1563
1071
return dbus.UInt64(self.timeout_milliseconds())
1564
old_timeout = self.timeout
1565
1072
self.timeout = datetime.timedelta(0, 0, 0, value)
1566
# Reschedule disabling
1567
if self.enabled:
1568
now = datetime.datetime.utcnow()
1569
self.expires += self.timeout - old_timeout
1570
if self.expires <= now:
1571
# The timeout has passed
1572
self.disable()
1573
else:
1574
if (getattr(self, "disable_initiator_tag", None)
1575
is None):
1576
return
1577
gobject.source_remove(self.disable_initiator_tag)
1578
self.disable_initiator_tag = (
1579
gobject.timeout_add(
1580
timedelta_to_milliseconds(self.expires - now),
1581
self.disable))
1582
1073
if getattr(self, "disable_initiator_tag", None) is None:
1074
return
1075
# Reschedule timeout
1076
gobject.source_remove(self.disable_initiator_tag)
1077
self.disable_initiator_tag = None
1078
self.expires = None
1079
time_to_die = (self.
1080
_timedelta_to_milliseconds((self
1081
.last_checked_ok
1082
+ self.timeout)
1083
- datetime.datetime
1084
.utcnow()))
1085
if time_to_die <= 0:
1086
# The timeout has passed
1087
self.disable()
1088
else:
1089
self.expires = (datetime.datetime.utcnow()
1090
+ datetime.timedelta(milliseconds = time_to_die))
1091
self.disable_initiator_tag = (gobject.timeout_add
1092
(time_to_die, self.disable))
1093
1583
1094
# ExtendedTimeout - property
1584
1095
@dbus_service_property(_interface, signature="t",
1585
1096
access="readwrite")
1587
1098
if value is None: # get
1588
1099
return dbus.UInt64(self.extended_timeout_milliseconds())
1589
1100
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1590
1101
1591
1102
# Interval - property
1592
1103
@dbus_service_property(_interface, signature="t",
1593
1104
access="readwrite")
1597
1108
self.interval = datetime.timedelta(0, 0, 0, value)
1598
1109
if getattr(self, "checker_initiator_tag", None) is None:
1599
1110
return
1600
if self.enabled:
1601
# Reschedule checker run
1602
gobject.source_remove(self.checker_initiator_tag)
1603
self.checker_initiator_tag = (gobject.timeout_add
1604
(value, self.start_checker))
1605
self.start_checker() # Start one now, too
1606
1111
# Reschedule checker run
1112
gobject.source_remove(self.checker_initiator_tag)
1113
self.checker_initiator_tag = (gobject.timeout_add
1114
(value, self.start_checker))
1115
self.start_checker() # Start one now, too
1116
1607
1117
# Checker - property
1608
1118
@dbus_service_property(_interface, signature="s",
1609
1119
access="readwrite")
1610
1120
def Checker_dbus_property(self, value=None):
1611
1121
if value is None: # get
1612
1122
return dbus.String(self.checker_command)
1613
self.checker_command = unicode(value)
1123
self.checker_command = value
1614
1124
1615
1125
# CheckerRunning - property
1616
1126
@dbus_service_property(_interface, signature="b",
1643
1153
self._pipe.send(('init', fpr, address))
1644
1154
if not self._pipe.recv():
1645
1155
raise KeyError()
1646
1156
1647
1157
def __getattribute__(self, name):
1648
if name == '_pipe':
1158
if(name == '_pipe'):
1649
1159
return super(ProxyClient, self).__getattribute__(name)
1650
1160
self._pipe.send(('getattr', name))
1651
1161
data = self._pipe.recv()
1656
1166
self._pipe.send(('funcall', name, args, kwargs))
1657
1167
return self._pipe.recv()[1]
1658
1168
return func
1659
1169
1660
1170
def __setattr__(self, name, value):
1661
if name == '_pipe':
1171
if(name == '_pipe'):
1662
1172
return super(ProxyClient, self).__setattr__(name, value)
1663
1173
self._pipe.send(('setattr', name, value))
1664
1174
1675
1185
unicode(self.client_address))
1676
1186
logger.debug("Pipe FD: %d",
1677
1187
self.server.child_pipe.fileno())
1678
1188
1679
1189
session = (gnutls.connection
1680
1190
.ClientSession(self.request,
1681
1191
gnutls.connection
1682
1192
.X509Credentials()))
1683
1193
1684
1194
# Note: gnutls.connection.X509Credentials is really a
1685
1195
# generic GnuTLS certificate credentials object so long as
1686
1196
# no X.509 keys are added to it. Therefore, we can use it
1687
1197
# here despite using OpenPGP certificates.
1688
1198
1689
1199
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1690
1200
# "+AES-256-CBC", "+SHA1",
1691
1201
# "+COMP-NULL", "+CTYPE-OPENPGP",
1697
1207
(gnutls.library.functions
1698
1208
.gnutls_priority_set_direct(session._c_object,
1699
1209
priority, None))
1700
1210
1701
1211
# Start communication using the Mandos protocol
1702
1212
# Get protocol number
1703
1213
line = self.request.makefile().readline()
1704
1214
logger.debug("Protocol version: %r", line)
1705
1215
try:
1706
1216
if int(line.strip().split()[0]) > 1:
1707
raise RuntimeError(line)
1217
raise RuntimeError
1708
1218
except (ValueError, IndexError, RuntimeError) as error:
1709
1219
logger.error("Unknown protocol version: %s", error)
1710
1220
return
1711
1221
1712
1222
# Start GnuTLS connection
1713
1223
try:
1714
1224
session.handshake()
1718
1228
# established. Just abandon the request.
1719
1229
return
1720
1230
logger.debug("Handshake succeeded")
1721
1231
1722
1232
approval_required = False
1723
1233
try:
1724
1234
try:
1729
1239
logger.warning("Bad certificate: %s", error)
1730
1240
return
1731
1241
logger.debug("Fingerprint: %s", fpr)
1732
1242
1733
1243
try:
1734
1244
client = ProxyClient(child_pipe, fpr,
1735
1245
self.client_address)
1747
1257
client.name)
1748
1258
if self.server.use_dbus:
1749
1259
# Emit D-Bus signal
1750
client.Rejected("Disabled")
1260
client.Rejected("Disabled")
1751
1261
return
1752
1262
1753
if client.approved or not client.approval_delay:
1263
if client._approved or not client.approval_delay:
1754
1264
#We are approved or approval is disabled
1755
1265
break
1756
elif client.approved is None:
1266
elif client._approved is None:
1757
1267
logger.info("Client %s needs approval",
1758
1268
client.name)
1759
1269
if self.server.use_dbus:
1770
1280
return
1771
1281
1772
1282
#wait until timeout or approved
1283
#x = float(client._timedelta_to_milliseconds(delay))
1773
1284
time = datetime.datetime.now()
1774
1285
client.changedstate.acquire()
1775
client.changedstate.wait(
1776
float(timedelta_to_milliseconds(delay)
1777
/ 1000))
1286
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
1778
1287
client.changedstate.release()
1779
1288
time2 = datetime.datetime.now()
1780
1289
if (time2 - time) >= delay:
1796
1305
try:
1797
1306
sent = session.send(client.secret[sent_size:])
1798
1307
except gnutls.errors.GNUTLSError as error:
1799
logger.warning("gnutls send failed",
1800
exc_info=error)
1308
logger.warning("gnutls send failed")
1801
1309
return
1802
1310
logger.debug("Sent: %d, remaining: %d",
1803
1311
sent, len(client.secret)
1804
1312
- (sent_size + sent))
1805
1313
sent_size += sent
1806
1314
1807
1315
logger.info("Sending secret to %s", client.name)
1808
# bump the timeout using extended_timeout
1809
client.bump_timeout(client.extended_timeout)
1316
# bump the timeout as if seen
1317
client.checked_ok(client.extended_timeout)
1810
1318
if self.server.use_dbus:
1811
1319
# Emit D-Bus signal
1812
1320
client.GotSecret()
1817
1325
try:
1818
1326
session.bye()
1819
1327
except gnutls.errors.GNUTLSError as error:
1820
logger.warning("GnuTLS bye failed",
1821
exc_info=error)
1328
logger.warning("GnuTLS bye failed")
1822
1329
1823
1330
@staticmethod
1824
1331
def peer_certificate(session):
1880
1387
# Convert the buffer to a Python bytestring
1881
1388
fpr = ctypes.string_at(buf, buf_len.value)
1882
1389
# Convert the bytestring to hexadecimal notation
1883
hex_fpr = binascii.hexlify(fpr).upper()
1390
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
1884
1391
return hex_fpr
1885
1392
1886
1393
1889
1396
def sub_process_main(self, request, address):
1890
1397
try:
1891
1398
self.finish_request(request, address)
1892
except Exception:
1399
except:
1893
1400
self.handle_error(request, address)
1894
1401
self.close_request(request)
1895
1402
1896
1403
def process_request(self, request, address):
1897
1404
"""Start a new process to process the request."""
1898
proc = multiprocessing.Process(target = self.sub_process_main,
1899
args = (request, address))
1900
proc.start()
1901
return proc
1902
1405
multiprocessing.Process(target = self.sub_process_main,
1406
args = (request, address)).start()
1903
1407
1904
1408
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1905
1409
""" adds a pipe to the MixIn """
1909
1413
This function creates a new pipe in self.pipe
1910
1414
"""
1911
1415
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1912
1913
proc = MultiprocessingMixIn.process_request(self, request,
1914
client_address)
1416
1417
super(MultiprocessingMixInWithPipe,
1418
self).process_request(request, client_address)
1915
1419
self.child_pipe.close()
1916
self.add_pipe(parent_pipe, proc)
1917
1918
def add_pipe(self, parent_pipe, proc):
1420
self.add_pipe(parent_pipe)
1421
1422
def add_pipe(self, parent_pipe):
1919
1423
"""Dummy function; override as necessary"""
1920
raise NotImplementedError()
1921
1424
raise NotImplementedError
1922
1425
1923
1426
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1924
1427
socketserver.TCPServer, object):
1930
1433
use_ipv6: Boolean; to use IPv6 or not
1931
1434
"""
1932
1435
def __init__(self, server_address, RequestHandlerClass,
1933
interface=None, use_ipv6=True, socketfd=None):
1934
"""If socketfd is set, use that file descriptor instead of
1935
creating a new one with socket.socket().
1936
"""
1436
interface=None, use_ipv6=True):
1937
1437
self.interface = interface
1938
1438
if use_ipv6:
1939
1439
self.address_family = socket.AF_INET6
1940
if socketfd is not None:
1941
# Save the file descriptor
1942
self.socketfd = socketfd
1943
# Save the original socket.socket() function
1944
self.socket_socket = socket.socket
1945
# To implement --socket, we monkey patch socket.socket.
1946
#
1947
# (When socketserver.TCPServer is a new-style class, we
1948
# could make self.socket into a property instead of monkey
1949
# patching socket.socket.)
1950
#
1951
# Create a one-time-only replacement for socket.socket()
1952
@functools.wraps(socket.socket)
1953
def socket_wrapper(*args, **kwargs):
1954
# Restore original function so subsequent calls are
1955
# not affected.
1956
socket.socket = self.socket_socket
1957
del self.socket_socket
1958
# This time only, return a new socket object from the
1959
# saved file descriptor.
1960
return socket.fromfd(self.socketfd, *args, **kwargs)
1961
# Replace socket.socket() function with wrapper
1962
socket.socket = socket_wrapper
1963
# The socketserver.TCPServer.__init__ will call
1964
# socket.socket(), which might be our replacement,
1965
# socket_wrapper(), if socketfd was set.
1966
1440
socketserver.TCPServer.__init__(self, server_address,
1967
1441
RequestHandlerClass)
1968
1969
1442
def server_bind(self):
1970
1443
"""This overrides the normal server_bind() function
1971
1444
to bind to an interface if one was specified, and also NOT to
1979
1452
try:
1980
1453
self.socket.setsockopt(socket.SOL_SOCKET,
1981
1454
SO_BINDTODEVICE,
1982
str(self.interface + '\0'))
1455
str(self.interface
1456
+ '\0'))
1983
1457
except socket.error as error:
1984
if error.errno == errno.EPERM:
1985
logger.error("No permission to bind to"
1986
" interface %s", self.interface)
1987
elif error.errno == errno.ENOPROTOOPT:
1458
if error[0] == errno.EPERM:
1459
logger.error("No permission to"
1460
" bind to interface %s",
1461
self.interface)
1462
elif error[0] == errno.ENOPROTOOPT:
1988
1463
logger.error("SO_BINDTODEVICE not available;"
1989
1464
" cannot bind to interface %s",
1990
1465
self.interface)
1991
elif error.errno == errno.ENODEV:
1992
logger.error("Interface %s does not exist,"
1993
" cannot bind", self.interface)
1994
1466
else:
1995
1467
raise
1996
1468
# Only bind(2) the socket if we really need to.
1999
1471
if self.address_family == socket.AF_INET6:
2000
1472
any_address = "::" # in6addr_any
2001
1473
else:
2002
any_address = "0.0.0.0" # INADDR_ANY
1474
any_address = socket.INADDR_ANY
2003
1475
self.server_address = (any_address,
2004
1476
self.server_address[1])
2005
1477
elif not self.server_address[1]:
2026
1498
"""
2027
1499
def __init__(self, server_address, RequestHandlerClass,
2028
1500
interface=None, use_ipv6=True, clients=None,
2029
gnutls_priority=None, use_dbus=True, socketfd=None):
1501
gnutls_priority=None, use_dbus=True):
2030
1502
self.enabled = False
2031
1503
self.clients = clients
2032
1504
if self.clients is None:
2033
self.clients = {}
1505
self.clients = set()
2034
1506
self.use_dbus = use_dbus
2035
1507
self.gnutls_priority = gnutls_priority
2036
1508
IPv6_TCPServer.__init__(self, server_address,
2037
1509
RequestHandlerClass,
2038
1510
interface = interface,
2039
use_ipv6 = use_ipv6,
2040
socketfd = socketfd)
1511
use_ipv6 = use_ipv6)
2041
1512
def server_activate(self):
2042
1513
if self.enabled:
2043
1514
return socketserver.TCPServer.server_activate(self)
2044
2045
1515
def enable(self):
2046
1516
self.enabled = True
2047
2048
def add_pipe(self, parent_pipe, proc):
1517
def add_pipe(self, parent_pipe):
2049
1518
# Call "handle_ipc" for both data and EOF events
2050
1519
gobject.io_add_watch(parent_pipe.fileno(),
2051
1520
gobject.IO_IN | gobject.IO_HUP,
2052
1521
functools.partial(self.handle_ipc,
2053
parent_pipe =
2054
parent_pipe,
2055
proc = proc))
2056
1522
parent_pipe = parent_pipe))
1523
2057
1524
def handle_ipc(self, source, condition, parent_pipe=None,
2058
proc = None, client_object=None):
2059
# error, or the other end of multiprocessing.Pipe has closed
2060
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2061
# Wait for other process to exit
2062
proc.join()
1525
client_object=None):
1526
condition_names = {
1527
gobject.IO_IN: "IN", # There is data to read.
1528
gobject.IO_OUT: "OUT", # Data can be written (without
1529
# blocking).
1530
gobject.IO_PRI: "PRI", # There is urgent data to read.
1531
gobject.IO_ERR: "ERR", # Error condition.
1532
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1533
# broken, usually for pipes and
1534
# sockets).
1535
}
1536
conditions_string = ' | '.join(name
1537
for cond, name in
1538
condition_names.iteritems()
1539
if cond & condition)
1540
# error or the other end of multiprocessing.Pipe has closed
1541
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2063
1542
return False
2064
1543
2065
1544
# Read a request from the child
2070
1549
fpr = request[1]
2071
1550
address = request[2]
2072
1551
2073
for c in self.clients.itervalues():
1552
for c in self.clients:
2074
1553
if c.fingerprint == fpr:
2075
1554
client = c
2076
1555
break
2079
1558
"dress: %s", fpr, address)
2080
1559
if self.use_dbus:
2081
1560
# Emit D-Bus signal
2082
mandos_dbus_service.ClientNotFound(fpr,
2083
address[0])
1561
mandos_dbus_service.ClientNotFound(fpr, address[0])
2084
1562
parent_pipe.send(False)
2085
1563
return False
2086
1564
2087
1565
gobject.io_add_watch(parent_pipe.fileno(),
2088
1566
gobject.IO_IN | gobject.IO_HUP,
2089
1567
functools.partial(self.handle_ipc,
2090
parent_pipe =
2091
parent_pipe,
2092
proc = proc,
2093
client_object =
2094
client))
1568
parent_pipe = parent_pipe,
1569
client_object = client))
2095
1570
parent_pipe.send(True)
2096
# remove the old hook in favor of the new above hook on
2097
# same fileno
1571
# remove the old hook in favor of the new above hook on same fileno
2098
1572
return False
2099
1573
if command == 'funcall':
2100
1574
funcname = request[1]
2101
1575
args = request[2]
2102
1576
kwargs = request[3]
2103
1577
2104
parent_pipe.send(('data', getattr(client_object,
2105
funcname)(*args,
2106
**kwargs)))
2107
1578
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
1579
2108
1580
if command == 'getattr':
2109
1581
attrname = request[1]
2110
1582
if callable(client_object.__getattribute__(attrname)):
2111
1583
parent_pipe.send(('function',))
2112
1584
else:
2113
parent_pipe.send(('data', client_object
2114
.__getattribute__(attrname)))
1585
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
2115
1586
2116
1587
if command == 'setattr':
2117
1588
attrname = request[1]
2118
1589
value = request[2]
2119
1590
setattr(client_object, attrname, value)
2120
1591
2121
1592
return True
2122
1593
2123
1594
2124
def rfc3339_duration_to_delta(duration):
2125
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2126
2127
>>> rfc3339_duration_to_delta("P7D")
2128
datetime.timedelta(7)
2129
>>> rfc3339_duration_to_delta("PT60S")
2130
datetime.timedelta(0, 60)
2131
>>> rfc3339_duration_to_delta("PT60M")
2132
datetime.timedelta(0, 3600)
2133
>>> rfc3339_duration_to_delta("PT24H")
2134
datetime.timedelta(1)
2135
>>> rfc3339_duration_to_delta("P1W")
2136
datetime.timedelta(7)
2137
>>> rfc3339_duration_to_delta("PT5M30S")
2138
datetime.timedelta(0, 330)
2139
>>> rfc3339_duration_to_delta("P1DT3M20S")
2140
datetime.timedelta(1, 200)
2141
"""
2142
2143
# Parsing an RFC 3339 duration with regular expressions is not
2144
# possible - there would have to be multiple places for the same
2145
# values, like seconds. The current code, while more esoteric, is
2146
# cleaner without depending on a parsing library. If Python had a
2147
# built-in library for parsing we would use it, but we'd like to
2148
# avoid excessive use of external libraries.
2149
2150
# New type for defining tokens, syntax, and semantics all-in-one
2151
Token = collections.namedtuple("Token",
2152
("regexp", # To match token; if
2153
# "value" is not None,
2154
# must have a "group"
2155
# containing digits
2156
"value", # datetime.timedelta or
2157
# None
2158
"followers")) # Tokens valid after
2159
# this token
2160
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2161
# the "duration" ABNF definition in RFC 3339, Appendix A.
2162
token_end = Token(re.compile(r"$"), None, frozenset())
2163
token_second = Token(re.compile(r"(\d+)S"),
2164
datetime.timedelta(seconds=1),
2165
frozenset((token_end,)))
2166
token_minute = Token(re.compile(r"(\d+)M"),
2167
datetime.timedelta(minutes=1),
2168
frozenset((token_second, token_end)))
2169
token_hour = Token(re.compile(r"(\d+)H"),
2170
datetime.timedelta(hours=1),
2171
frozenset((token_minute, token_end)))
2172
token_time = Token(re.compile(r"T"),
2173
None,
2174
frozenset((token_hour, token_minute,
2175
token_second)))
2176
token_day = Token(re.compile(r"(\d+)D"),
2177
datetime.timedelta(days=1),
2178
frozenset((token_time, token_end)))
2179
token_month = Token(re.compile(r"(\d+)M"),
2180
datetime.timedelta(weeks=4),
2181
frozenset((token_day, token_end)))
2182
token_year = Token(re.compile(r"(\d+)Y"),
2183
datetime.timedelta(weeks=52),
2184
frozenset((token_month, token_end)))
2185
token_week = Token(re.compile(r"(\d+)W"),
2186
datetime.timedelta(weeks=1),
2187
frozenset((token_end,)))
2188
token_duration = Token(re.compile(r"P"), None,
2189
frozenset((token_year, token_month,
2190
token_day, token_time,
2191
token_week)))
2192
# Define starting values
2193
value = datetime.timedelta() # Value so far
2194
found_token = None
2195
followers = frozenset((token_duration,)) # Following valid tokens
2196
s = duration # String left to parse
2197
# Loop until end token is found
2198
while found_token is not token_end:
2199
# Search for any currently valid tokens
2200
for token in followers:
2201
match = token.regexp.match(s)
2202
if match is not None:
2203
# Token found
2204
if token.value is not None:
2205
# Value found, parse digits
2206
factor = int(match.group(1), 10)
2207
# Add to value so far
2208
value += factor * token.value
2209
# Strip token from string
2210
s = token.regexp.sub("", s, 1)
2211
# Go to found token
2212
found_token = token
2213
# Set valid next tokens
2214
followers = found_token.followers
2215
break
2216
else:
2217
# No currently valid tokens were found
2218
raise ValueError("Invalid RFC 3339 duration")
2219
# End token found
2220
return value
2221
2222
2223
1595
def string_to_delta(interval):
2224
1596
"""Parse a string and return a datetime.timedelta
2225
1597
2236
1608
>>> string_to_delta('5m 30s')
2237
1609
datetime.timedelta(0, 330)
2238
1610
"""
2239
2240
try:
2241
return rfc3339_duration_to_delta(interval)
2242
except ValueError:
2243
pass
2244
2245
1611
timevalue = datetime.timedelta(0)
2246
1612
for s in interval.split():
2247
1613
try:
2258
1624
elif suffix == "w":
2259
1625
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2260
1626
else:
2261
raise ValueError("Unknown suffix {0!r}"
2262
.format(suffix))
2263
except IndexError as e:
1627
raise ValueError("Unknown suffix %r" % suffix)
1628
except (ValueError, IndexError) as e:
2264
1629
raise ValueError(*(e.args))
2265
1630
timevalue += delta
2266
1631
return timevalue
2267
1632
2268
1633
1634
def if_nametoindex(interface):
1635
"""Call the C function if_nametoindex(), or equivalent
1636
1637
Note: This function cannot accept a unicode string."""
1638
global if_nametoindex
1639
try:
1640
if_nametoindex = (ctypes.cdll.LoadLibrary
1641
(ctypes.util.find_library("c"))
1642
.if_nametoindex)
1643
except (OSError, AttributeError):
1644
logger.warning("Doing if_nametoindex the hard way")
1645
def if_nametoindex(interface):
1646
"Get an interface index the hard way, i.e. using fcntl()"
1647
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1648
with contextlib.closing(socket.socket()) as s:
1649
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1650
struct.pack(str("16s16x"),
1651
interface))
1652
interface_index = struct.unpack(str("I"),
1653
ifreq[16:20])[0]
1654
return interface_index
1655
return if_nametoindex(interface)
1656
1657
2269
1658
def daemon(nochdir = False, noclose = False):
2270
1659
"""See daemon(3). Standard BSD Unix function.
2271
1660
2279
1668
sys.exit()
2280
1669
if not noclose:
2281
1670
# Close all standard open file descriptors
2282
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1671
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2283
1672
if not stat.S_ISCHR(os.fstat(null).st_mode):
2284
1673
raise OSError(errno.ENODEV,
2285
"{0} not a character device"
2286
.format(os.devnull))
1674
"%s not a character device"
1675
% os.path.devnull)
2287
1676
os.dup2(null, sys.stdin.fileno())
2288
1677
os.dup2(null, sys.stdout.fileno())
2289
1678
os.dup2(null, sys.stderr.fileno())
2298
1687
2299
1688
parser = argparse.ArgumentParser()
2300
1689
parser.add_argument("-v", "--version", action="version",
2301
version = "%(prog)s {0}".format(version),
1690
version = "%%(prog)s %s" % version,
2302
1691
help="show version number and exit")
2303
1692
parser.add_argument("-i", "--interface", metavar="IF",
2304
1693
help="Bind to interface IF")
2310
1699
help="Run self-test")
2311
1700
parser.add_argument("--debug", action="store_true",
2312
1701
help="Debug mode; run in foreground and log"
2313
" to terminal", default=None)
1702
" to terminal")
2314
1703
parser.add_argument("--debuglevel", metavar="LEVEL",
2315
1704
help="Debug level for stdout output")
2316
1705
parser.add_argument("--priority", help="GnuTLS"
2323
1712
" files")
2324
1713
parser.add_argument("--no-dbus", action="store_false",
2325
1714
dest="use_dbus", help="Do not provide D-Bus"
2326
" system bus interface", default=None)
1715
" system bus interface")
2327
1716
parser.add_argument("--no-ipv6", action="store_false",
2328
dest="use_ipv6", help="Do not use IPv6",
2329
default=None)
2330
parser.add_argument("--no-restore", action="store_false",
2331
dest="restore", help="Do not restore stored"
2332
" state", default=None)
2333
parser.add_argument("--socket", type=int,
2334
help="Specify a file descriptor to a network"
2335
" socket to use instead of creating one")
2336
parser.add_argument("--statedir", metavar="DIR",
2337
help="Directory to save/restore state in")
2338
parser.add_argument("--foreground", action="store_true",
2339
help="Run in foreground", default=None)
2340
parser.add_argument("--no-zeroconf", action="store_false",
2341
dest="zeroconf", help="Do not use Zeroconf",
2342
default=None)
2343
1717
dest="use_ipv6", help="Do not use IPv6")
2344
1718
options = parser.parse_args()
2345
1719
2346
1720
if options.check:
2347
1721
import doctest
2348
fail_count, test_count = doctest.testmod()
2349
sys.exit(os.EX_OK if fail_count == 0 else 1)
1722
doctest.testmod()
1723
sys.exit()
2350
1724
2351
1725
# Default values for config file for server-global settings
2352
1726
server_defaults = { "interface": "",
2354
1728
"port": "",
2355
1729
"debug": "False",
2356
1730
"priority":
2357
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:+SIGN-RSA-SHA224:+SIGN-RSA-RMD160",
1731
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2358
1732
"servicename": "Mandos",
2359
1733
"use_dbus": "True",
2360
1734
"use_ipv6": "True",
2361
1735
"debuglevel": "",
2362
"restore": "True",
2363
"socket": "",
2364
"statedir": "/var/lib/mandos",
2365
"foreground": "False",
2366
"zeroconf": "True",
2367
1736
}
2368
1737
2369
1738
# Parse config file for server-global settings
2374
1743
# Convert the SafeConfigParser object to a dict
2375
1744
server_settings = server_config.defaults()
2376
1745
# Use the appropriate methods on the non-string config options
2377
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
1746
for option in ("debug", "use_dbus", "use_ipv6"):
2378
1747
server_settings[option] = server_config.getboolean("DEFAULT",
2379
1748
option)
2380
1749
if server_settings["port"]:
2381
1750
server_settings["port"] = server_config.getint("DEFAULT",
2382
1751
"port")
2383
if server_settings["socket"]:
2384
server_settings["socket"] = server_config.getint("DEFAULT",
2385
"socket")
2386
# Later, stdin will, and stdout and stderr might, be dup'ed
2387
# over with an opened os.devnull. But we don't want this to
2388
# happen with a supplied network socket.
2389
if 0 <= server_settings["socket"] <= 2:
2390
server_settings["socket"] = os.dup(server_settings
2391
["socket"])
2392
1752
del server_config
2393
1753
2394
1754
# Override the settings from the config file with command line
2395
1755
# options, if set.
2396
1756
for option in ("interface", "address", "port", "debug",
2397
1757
"priority", "servicename", "configdir",
2398
"use_dbus", "use_ipv6", "debuglevel", "restore",
2399
"statedir", "socket", "foreground", "zeroconf"):
1758
"use_dbus", "use_ipv6", "debuglevel"):
2400
1759
value = getattr(options, option)
2401
1760
if value is not None:
2402
1761
server_settings[option] = value
2405
1764
for option in server_settings.keys():
2406
1765
if type(server_settings[option]) is str:
2407
1766
server_settings[option] = unicode(server_settings[option])
2408
# Force all boolean options to be boolean
2409
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2410
"foreground", "zeroconf"):
2411
server_settings[option] = bool(server_settings[option])
2412
# Debug implies foreground
2413
if server_settings["debug"]:
2414
server_settings["foreground"] = True
2415
1767
# Now we have our good server settings in "server_settings"
2416
1768
2417
1769
##################################################################
2418
1770
2419
if (not server_settings["zeroconf"] and
2420
not (server_settings["port"]
2421
or server_settings["socket"] != "")):
2422
parser.error("Needs port or socket to work without"
2423
" Zeroconf")
2424
2425
1771
# For convenience
2426
1772
debug = server_settings["debug"]
2427
1773
debuglevel = server_settings["debuglevel"]
2428
1774
use_dbus = server_settings["use_dbus"]
2429
1775
use_ipv6 = server_settings["use_ipv6"]
2430
stored_state_path = os.path.join(server_settings["statedir"],
2431
stored_state_file)
2432
foreground = server_settings["foreground"]
2433
zeroconf = server_settings["zeroconf"]
2434
2435
if debug:
2436
initlogger(debug, logging.DEBUG)
2437
else:
2438
if not debuglevel:
2439
initlogger(debug)
2440
else:
2441
level = getattr(logging, debuglevel.upper())
2442
initlogger(debug, level)
2443
1776
2444
1777
if server_settings["servicename"] != "Mandos":
2445
1778
syslogger.setFormatter(logging.Formatter
2446
('Mandos ({0}) [%(process)d]:'
2447
' %(levelname)s: %(message)s'
2448
.format(server_settings
2449
["servicename"])))
1779
('Mandos (%s) [%%(process)d]:'
1780
' %%(levelname)s: %%(message)s'
1781
% server_settings["servicename"]))
2450
1782
2451
1783
# Parse config file with clients
2452
client_config = configparser.SafeConfigParser(Client
2453
.client_defaults)
1784
client_defaults = { "timeout": "5m",
1785
"extended_timeout": "15m",
1786
"interval": "2m",
1787
"checker": "fping -q -- %%(host)s",
1788
"host": "",
1789
"approval_delay": "0s",
1790
"approval_duration": "1s",
1791
}
1792
client_config = configparser.SafeConfigParser(client_defaults)
2454
1793
client_config.read(os.path.join(server_settings["configdir"],
2455
1794
"clients.conf"))
2456
1795
2457
1796
global mandos_dbus_service
2458
1797
mandos_dbus_service = None
2459
1798
2460
socketfd = None
2461
if server_settings["socket"] != "":
2462
socketfd = server_settings["socket"]
2463
1799
tcp_server = MandosServer((server_settings["address"],
2464
1800
server_settings["port"]),
2465
1801
ClientHandler,
2468
1804
use_ipv6=use_ipv6,
2469
1805
gnutls_priority=
2470
1806
server_settings["priority"],
2471
use_dbus=use_dbus,
2472
socketfd=socketfd)
2473
if not foreground:
2474
pidfilename = "/run/mandos.pid"
2475
if not os.path.isdir("/run/."):
2476
pidfilename = "/var/run/mandos.pid"
2477
pidfile = None
1807
use_dbus=use_dbus)
1808
if not debug:
1809
pidfilename = "/var/run/mandos.pid"
2478
1810
try:
2479
1811
pidfile = open(pidfilename, "w")
2480
except IOError as e:
2481
logger.error("Could not open file %r", pidfilename,
2482
exc_info=e)
1812
except IOError:
1813
logger.error("Could not open file %r", pidfilename)
2483
1814
2484
for name in ("_mandos", "mandos", "nobody"):
1815
try:
1816
uid = pwd.getpwnam("_mandos").pw_uid
1817
gid = pwd.getpwnam("_mandos").pw_gid
1818
except KeyError:
2485
1819
try:
2486
uid = pwd.getpwnam(name).pw_uid
2487
gid = pwd.getpwnam(name).pw_gid
2488
break
1820
uid = pwd.getpwnam("mandos").pw_uid
1821
gid = pwd.getpwnam("mandos").pw_gid
2489
1822
except KeyError:
2490
continue
2491
else:
2492
uid = 65534
2493
gid = 65534
1823
try:
1824
uid = pwd.getpwnam("nobody").pw_uid
1825
gid = pwd.getpwnam("nobody").pw_gid
1826
except KeyError:
1827
uid = 65534
1828
gid = 65534
2494
1829
try:
2495
1830
os.setgid(gid)
2496
1831
os.setuid(uid)
2497
1832
except OSError as error:
2498
if error.errno != errno.EPERM:
2499
raise
1833
if error[0] != errno.EPERM:
1834
raise error
2500
1835
1836
if not debug and not debuglevel:
1837
syslogger.setLevel(logging.WARNING)
1838
console.setLevel(logging.WARNING)
1839
if debuglevel:
1840
level = getattr(logging, debuglevel.upper())
1841
syslogger.setLevel(level)
1842
console.setLevel(level)
1843
2501
1844
if debug:
2502
1845
# Enable all possible GnuTLS debugging
2503
1846
2513
1856
.gnutls_global_set_log_function(debug_gnutls))
2514
1857
2515
1858
# Redirect stdin so all checkers get /dev/null
2516
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1859
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2517
1860
os.dup2(null, sys.stdin.fileno())
2518
1861
if null > 2:
2519
1862
os.close(null)
1863
else:
1864
# No console logging
1865
logger.removeHandler(console)
2520
1866
2521
1867
# Need to fork before connecting to D-Bus
2522
if not foreground:
1868
if not debug:
2523
1869
# Close all input and output, do double fork, etc.
2524
1870
daemon()
2525
1871
2526
# multiprocessing will use threads, so before we use gobject we
2527
# need to inform gobject that threads will be used.
2528
gobject.threads_init()
2529
2530
1872
global main_loop
2531
1873
# From the Avahi example code
2532
DBusGMainLoop(set_as_default=True)
1874
DBusGMainLoop(set_as_default=True )
2533
1875
main_loop = gobject.MainLoop()
2534
1876
bus = dbus.SystemBus()
2535
1877
# End of Avahi example code
2536
1878
if use_dbus:
2537
1879
try:
2538
bus_name = dbus.service.BusName("se.recompile.Mandos",
1880
bus_name = dbus.service.BusName("se.bsnet.fukt.Mandos",
2539
1881
bus, do_not_queue=True)
2540
old_bus_name = (dbus.service.BusName
2541
("se.bsnet.fukt.Mandos", bus,
2542
do_not_queue=True))
2543
1882
except dbus.exceptions.NameExistsException as e:
2544
logger.error("Disabling D-Bus:", exc_info=e)
1883
logger.error(unicode(e) + ", disabling D-Bus")
2545
1884
use_dbus = False
2546
1885
server_settings["use_dbus"] = False
2547
1886
tcp_server.use_dbus = False
2548
if zeroconf:
2549
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2550
service = AvahiServiceToSyslog(name =
2551
server_settings["servicename"],
2552
servicetype = "_mandos._tcp",
2553
protocol = protocol, bus = bus)
2554
if server_settings["interface"]:
2555
service.interface = (if_nametoindex
2556
(str(server_settings["interface"])))
1887
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1888
service = AvahiService(name = server_settings["servicename"],
1889
servicetype = "_mandos._tcp",
1890
protocol = protocol, bus = bus)
1891
if server_settings["interface"]:
1892
service.interface = (if_nametoindex
1893
(str(server_settings["interface"])))
2557
1894
2558
1895
global multiprocessing_manager
2559
1896
multiprocessing_manager = multiprocessing.Manager()
2561
1898
client_class = Client
2562
1899
if use_dbus:
2563
1900
client_class = functools.partial(ClientDBus, bus = bus)
2564
2565
client_settings = Client.config_parser(client_config)
2566
old_client_settings = {}
2567
clients_data = {}
2568
2569
# This is used to redirect stdout and stderr for checker processes
2570
global wnull
2571
wnull = open(os.devnull, "w") # A writable /dev/null
2572
# Only used if server is running in foreground but not in debug
2573
# mode
2574
if debug or not foreground:
2575
wnull.close()
2576
2577
# Get client data and settings from last running state.
2578
if server_settings["restore"]:
2579
try:
2580
with open(stored_state_path, "rb") as stored_state:
2581
clients_data, old_client_settings = (pickle.load
2582
(stored_state))
2583
os.remove(stored_state_path)
2584
except IOError as e:
2585
if e.errno == errno.ENOENT:
2586
logger.warning("Could not load persistent state: {0}"
2587
.format(os.strerror(e.errno)))
2588
else:
2589
logger.critical("Could not load persistent state:",
2590
exc_info=e)
2591
raise
2592
except EOFError as e:
2593
logger.warning("Could not load persistent state: "
2594
"EOFError:", exc_info=e)
2595
2596
with PGPEngine() as pgp:
2597
for client_name, client in clients_data.iteritems():
2598
# Skip removed clients
2599
if client_name not in client_settings:
2600
continue
2601
2602
# Decide which value to use after restoring saved state.
2603
# We have three different values: Old config file,
2604
# new config file, and saved state.
2605
# New config value takes precedence if it differs from old
2606
# config value, otherwise use saved state.
2607
for name, value in client_settings[client_name].items():
2608
try:
2609
# For each value in new config, check if it
2610
# differs from the old config value (Except for
2611
# the "secret" attribute)
2612
if (name != "secret" and
2613
value != old_client_settings[client_name]
2614
[name]):
2615
client[name] = value
2616
except KeyError:
2617
pass
2618
2619
# Clients who has passed its expire date can still be
2620
# enabled if its last checker was successful. Clients
2621
# whose checker succeeded before we stored its state is
2622
# assumed to have successfully run all checkers during
2623
# downtime.
2624
if client["enabled"]:
2625
if datetime.datetime.utcnow() >= client["expires"]:
2626
if not client["last_checked_ok"]:
2627
logger.warning(
2628
"disabling client {0} - Client never "
2629
"performed a successful checker"
2630
.format(client_name))
2631
client["enabled"] = False
2632
elif client["last_checker_status"] != 0:
2633
logger.warning(
2634
"disabling client {0} - Client "
2635
"last checker failed with error code {1}"
2636
.format(client_name,
2637
client["last_checker_status"]))
2638
client["enabled"] = False
2639
else:
2640
client["expires"] = (datetime.datetime
2641
.utcnow()
2642
+ client["timeout"])
2643
logger.debug("Last checker succeeded,"
2644
" keeping {0} enabled"
2645
.format(client_name))
1901
def client_config_items(config, section):
1902
special_settings = {
1903
"approved_by_default":
1904
lambda: config.getboolean(section,
1905
"approved_by_default"),
1906
}
1907
for name, value in config.items(section):
2646
1908
try:
2647
client["secret"] = (
2648
pgp.decrypt(client["encrypted_secret"],
2649
client_settings[client_name]
2650
["secret"]))
2651
except PGPError:
2652
# If decryption fails, we use secret from new settings
2653
logger.debug("Failed to decrypt {0} old secret"
2654
.format(client_name))
2655
client["secret"] = (
2656
client_settings[client_name]["secret"])
2657
2658
# Add/remove clients based on new changes made to config
2659
for client_name in (set(old_client_settings)
2660
- set(client_settings)):
2661
del clients_data[client_name]
2662
for client_name in (set(client_settings)
2663
- set(old_client_settings)):
2664
clients_data[client_name] = client_settings[client_name]
2665
2666
# Create all client objects
2667
for client_name, client in clients_data.iteritems():
2668
tcp_server.clients[client_name] = client_class(
2669
name = client_name, settings = client,
2670
server_settings = server_settings)
2671
1909
yield (name, special_settings[name]())
1910
except KeyError:
1911
yield (name, value)
1912
1913
tcp_server.clients.update(set(
1914
client_class(name = section,
1915
config= dict(client_config_items(
1916
client_config, section)))
1917
for section in client_config.sections()))
2672
1918
if not tcp_server.clients:
2673
1919
logger.warning("No clients defined")
2674
2675
if not foreground:
2676
if pidfile is not None:
2677
try:
2678
with pidfile:
2679
pid = os.getpid()
2680
pidfile.write(str(pid) + "\n".encode("utf-8"))
2681
except IOError:
2682
logger.error("Could not write to file %r with PID %d",
2683
pidfilename, pid)
2684
del pidfile
1920
1921
if not debug:
1922
try:
1923
with pidfile:
1924
pid = os.getpid()
1925
pidfile.write(str(pid) + "\n".encode("utf-8"))
1926
del pidfile
1927
except IOError:
1928
logger.error("Could not write to file %r with PID %d",
1929
pidfilename, pid)
1930
except NameError:
1931
# "pidfile" was never created
1932
pass
2685
1933
del pidfilename
2686
1934
1935
signal.signal(signal.SIGINT, signal.SIG_IGN)
1936
2687
1937
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2688
1938
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2689
1939
2690
1940
if use_dbus:
2691
@alternate_dbus_interfaces({"se.recompile.Mandos":
2692
"se.bsnet.fukt.Mandos"})
2693
class MandosDBusService(DBusObjectWithProperties):
1941
class MandosDBusService(dbus.service.Object):
2694
1942
"""A D-Bus proxy object"""
2695
1943
def __init__(self):
2696
1944
dbus.service.Object.__init__(self, bus, "/")
2697
_interface = "se.recompile.Mandos"
2698
2699
@dbus_interface_annotations(_interface)
2700
def _foo(self):
2701
return { "org.freedesktop.DBus.Property"
2702
".EmitsChangedSignal":
2703
"false"}
1945
_interface = "se.bsnet.fukt.Mandos"
2704
1946
2705
1947
@dbus.service.signal(_interface, signature="o")
2706
1948
def ClientAdded(self, objpath):
2721
1963
def GetAllClients(self):
2722
1964
"D-Bus method"
2723
1965
return dbus.Array(c.dbus_object_path
2724
for c in
2725
tcp_server.clients.itervalues())
1966
for c in tcp_server.clients)
2726
1967
2727
1968
@dbus.service.method(_interface,
2728
1969
out_signature="a{oa{sv}}")
2730
1971
"D-Bus method"
2731
1972
return dbus.Dictionary(
2732
1973
((c.dbus_object_path, c.GetAll(""))
2733
for c in tcp_server.clients.itervalues()),
1974
for c in tcp_server.clients),
2734
1975
signature="oa{sv}")
2735
1976
2736
1977
@dbus.service.method(_interface, in_signature="o")
2737
1978
def RemoveClient(self, object_path):
2738
1979
"D-Bus method"
2739
for c in tcp_server.clients.itervalues():
1980
for c in tcp_server.clients:
2740
1981
if c.dbus_object_path == object_path:
2741
del tcp_server.clients[c.name]
1982
tcp_server.clients.remove(c)
2742
1983
c.remove_from_connection()
2743
1984
# Don't signal anything except ClientRemoved
2744
1985
c.disable(quiet=True)
2753
1994
2754
1995
def cleanup():
2755
1996
"Cleanup function; run on exit"
2756
if zeroconf:
2757
service.cleanup()
2758
2759
multiprocessing.active_children()
2760
wnull.close()
2761
if not (tcp_server.clients or client_settings):
2762
return
2763
2764
# Store client before exiting. Secrets are encrypted with key
2765
# based on what config file has. If config file is
2766
# removed/edited, old secret will thus be unrecovable.
2767
clients = {}
2768
with PGPEngine() as pgp:
2769
for client in tcp_server.clients.itervalues():
2770
key = client_settings[client.name]["secret"]
2771
client.encrypted_secret = pgp.encrypt(client.secret,
2772
key)
2773
client_dict = {}
2774
2775
# A list of attributes that can not be pickled
2776
# + secret.
2777
exclude = set(("bus", "changedstate", "secret",
2778
"checker", "server_settings"))
2779
for name, typ in (inspect.getmembers
2780
(dbus.service.Object)):
2781
exclude.add(name)
2782
2783
client_dict["encrypted_secret"] = (client
2784
.encrypted_secret)
2785
for attr in client.client_structure:
2786
if attr not in exclude:
2787
client_dict[attr] = getattr(client, attr)
2788
2789
clients[client.name] = client_dict
2790
del client_settings[client.name]["secret"]
2791
2792
try:
2793
with (tempfile.NamedTemporaryFile
2794
(mode='wb', suffix=".pickle", prefix='clients-',
2795
dir=os.path.dirname(stored_state_path),
2796
delete=False)) as stored_state:
2797
pickle.dump((clients, client_settings), stored_state)
2798
tempname=stored_state.name
2799
os.rename(tempname, stored_state_path)
2800
except (IOError, OSError) as e:
2801
if not debug:
2802
try:
2803
os.remove(tempname)
2804
except NameError:
2805
pass
2806
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
2807
logger.warning("Could not save persistent state: {0}"
2808
.format(os.strerror(e.errno)))
2809
else:
2810
logger.warning("Could not save persistent state:",
2811
exc_info=e)
2812
raise
2813
2814
# Delete all clients, and settings from config
1997
service.cleanup()
1998
2815
1999
while tcp_server.clients:
2816
name, client = tcp_server.clients.popitem()
2000
client = tcp_server.clients.pop()
2817
2001
if use_dbus:
2818
2002
client.remove_from_connection()
2003
client.disable_hook = None
2819
2004
# Don't signal anything except ClientRemoved
2820
2005
client.disable(quiet=True)
2821
2006
if use_dbus:
2822
2007
# Emit D-Bus signal
2823
mandos_dbus_service.ClientRemoved(client
2824
.dbus_object_path,
2008
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
2825
2009
client.name)
2826
client_settings.clear()
2827
2010
2828
2011
atexit.register(cleanup)
2829
2012
2830
for client in tcp_server.clients.itervalues():
2013
for client in tcp_server.clients:
2831
2014
if use_dbus:
2832
2015
# Emit D-Bus signal
2833
2016
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2834
# Need to initiate checking of clients
2835
if client.enabled:
2836
client.init_checker()
2017
client.enable()
2837
2018
2838
2019
tcp_server.enable()
2839
2020
tcp_server.server_activate()
2840
2021
2841
2022
# Find out what port we got
2842
if zeroconf:
2843
service.port = tcp_server.socket.getsockname()[1]
2023
service.port = tcp_server.socket.getsockname()[1]
2844
2024
if use_ipv6:
2845
2025
logger.info("Now listening on address %r, port %d,"
2846
" flowinfo %d, scope_id %d",
2847
*tcp_server.socket.getsockname())
2026
" flowinfo %d, scope_id %d"
2027
% tcp_server.socket.getsockname())
2848
2028
else: # IPv4
2849
logger.info("Now listening on address %r, port %d",
2850
*tcp_server.socket.getsockname())
2029
logger.info("Now listening on address %r, port %d"
2030
% tcp_server.socket.getsockname())
2851
2031
2852
2032
#service.interface = tcp_server.socket.getsockname()[3]
2853
2033
2854
2034
try:
2855
if zeroconf:
2856
# From the Avahi example code
2857
try:
2858
service.activate()
2859
except dbus.exceptions.DBusException as error:
2860
logger.critical("D-Bus Exception", exc_info=error)
2861
cleanup()
2862
sys.exit(1)
2863
# End of Avahi example code
2035
# From the Avahi example code
2036
try:
2037
service.activate()
2038
except dbus.exceptions.DBusException as error:
2039
logger.critical("DBusException: %s", error)
2040
cleanup()
2041
sys.exit(1)
2042
# End of Avahi example code
2864
2043
2865
2044
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2866
2045
lambda *args, **kwargs:
2870
2049
logger.debug("Starting main loop")
2871
2050
main_loop.run()
2872
2051
except AvahiError as error:
2873
logger.critical("Avahi Error", exc_info=error)
2052
logger.critical("AvahiError: %s", error)
2874
2053
cleanup()
2875
2054
sys.exit(1)
2876
2055
except KeyboardInterrupt:
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0