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- Committer: Teddy Hogeborn
- Date: 2014-07-12 13:13:28 UTC
- Revision ID: teddy@recompile.se-20140712131328-gdkvcea7f9rov7bn
mandos-client: Fix minor memory leak on memory full or clock failure.
* plugins.d/mandos-client.c (add_server): On any errors, free
new_server and its contents
before returning.
* plugins.d/mandos-client.c (add_server): On any errors, free
new_server and its contents
before returning.
- files added:
- debian/mandos-client.examples
- debian/upstream
- network-hooks.d
- files modified:
- .bzrignore
added
removed
mandos
11
11
# "AvahiService" class, and some lines in "main".
12
12
#
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13
# Everything else is
14
# Copyright © 2008-2011 Teddy Hogeborn
15
# Copyright © 2008-2011 Björn Påhlsson
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# Copyright © 2008-2014 Teddy Hogeborn
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# Copyright © 2008-2014 Björn Påhlsson
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16
#
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# This program is free software: you can redistribute it and/or modify
18
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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
29
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# <http://www.gnu.org/licenses/>.
30
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#
31
# Contact the authors at <mandos@fukt.bsnet.se>.
31
# Contact the authors at <mandos@recompile.se>.
32
32
#
33
33
34
34
from __future__ import (division, absolute_import, print_function,
35
35
unicode_literals)
36
36
37
from future_builtins import *
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37
39
import SocketServer as socketserver
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40
import socket
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41
import argparse
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64
import functools
63
65
import cPickle as pickle
64
66
import multiprocessing
67
import types
68
import binascii
69
import tempfile
70
import itertools
71
import collections
65
72
66
73
import dbus
67
74
import dbus.service
81
88
except ImportError:
82
89
SO_BINDTODEVICE = None
83
90
84
85
version = "1.3.0"
86
87
#logger = logging.getLogger('mandos')
88
logger = logging.Logger('mandos')
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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)
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97
console = logging.StreamHandler()
98
console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'
99
' %(levelname)s:'
100
' %(message)s'))
101
logger.addHandler(console)
91
version = "1.6.5"
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',
150
'--no-use-agent']
151
152
def __enter__(self):
153
return self
154
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def __exit__(self, exc_type, exc_value, traceback):
156
self._cleanup()
157
return False
158
159
def __del__(self):
160
self._cleanup()
161
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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
102
223
103
224
class AvahiError(Exception):
104
225
def __init__(self, value, *args, **kwargs):
122
243
Used to optionally bind to the specified interface.
123
244
name: string; Example: 'Mandos'
124
245
type: string; Example: '_mandos._tcp'.
125
See <http://www.dns-sd.org/ServiceTypes.html>
246
See <https://www.iana.org/assignments/service-names-port-numbers>
126
247
port: integer; what port to announce
127
248
TXT: list of strings; TXT record for the service
128
249
domain: string; Domain to publish on, default to .local if empty.
134
255
server: D-Bus Server
135
256
bus: dbus.SystemBus()
136
257
"""
258
137
259
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
138
260
servicetype = None, port = None, TXT = None,
139
261
domain = "", host = "", max_renames = 32768,
152
274
self.server = None
153
275
self.bus = bus
154
276
self.entry_group_state_changed_match = None
277
155
278
def rename(self):
156
279
"""Derived from the Avahi example code"""
157
280
if self.rename_count >= self.max_renames:
159
282
" after %i retries, exiting.",
160
283
self.rename_count)
161
284
raise AvahiServiceError("Too many renames")
162
self.name = unicode(self.server.GetAlternativeServiceName(self.name))
285
self.name = unicode(self.server
286
.GetAlternativeServiceName(self.name))
163
287
logger.info("Changing Zeroconf service name to %r ...",
164
288
self.name)
165
syslogger.setFormatter(logging.Formatter
166
('Mandos (%s) [%%(process)d]:'
167
' %%(levelname)s: %%(message)s'
168
% self.name))
169
289
self.remove()
170
290
try:
171
291
self.add()
172
292
except dbus.exceptions.DBusException as error:
173
logger.critical("DBusException: %s", error)
293
logger.critical("D-Bus Exception", exc_info=error)
174
294
self.cleanup()
175
295
os._exit(1)
176
296
self.rename_count += 1
297
177
298
def remove(self):
178
299
"""Derived from the Avahi example code"""
179
300
if self.entry_group_state_changed_match is not None:
181
302
self.entry_group_state_changed_match = None
182
303
if self.group is not None:
183
304
self.group.Reset()
305
184
306
def add(self):
185
307
"""Derived from the Avahi example code"""
186
308
self.remove()
191
313
avahi.DBUS_INTERFACE_ENTRY_GROUP)
192
314
self.entry_group_state_changed_match = (
193
315
self.group.connect_to_signal(
194
'StateChanged', self .entry_group_state_changed))
316
'StateChanged', self.entry_group_state_changed))
195
317
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
196
318
self.name, self.type)
197
319
self.group.AddService(
203
325
dbus.UInt16(self.port),
204
326
avahi.string_array_to_txt_array(self.TXT))
205
327
self.group.Commit()
328
206
329
def entry_group_state_changed(self, state, error):
207
330
"""Derived from the Avahi example code"""
208
331
logger.debug("Avahi entry group state change: %i", state)
215
338
elif state == avahi.ENTRY_GROUP_FAILURE:
216
339
logger.critical("Avahi: Error in group state changed %s",
217
340
unicode(error))
218
raise AvahiGroupError("State changed: %s"
219
% unicode(error))
341
raise AvahiGroupError("State changed: {0!s}"
342
.format(error))
343
220
344
def cleanup(self):
221
345
"""Derived from the Avahi example code"""
222
346
if self.group is not None:
223
347
try:
224
348
self.group.Free()
225
349
except (dbus.exceptions.UnknownMethodException,
226
dbus.exceptions.DBusException) as e:
350
dbus.exceptions.DBusException):
227
351
pass
228
352
self.group = None
229
353
self.remove()
354
230
355
def server_state_changed(self, state, error=None):
231
356
"""Derived from the Avahi example code"""
232
357
logger.debug("Avahi server state change: %i", state)
251
376
logger.debug("Unknown state: %r", state)
252
377
else:
253
378
logger.debug("Unknown state: %r: %r", state, error)
379
254
380
def activate(self):
255
381
"""Derived from the Avahi example code"""
256
382
if self.server is None:
264
390
self.server_state_changed(self.server.GetState())
265
391
266
392
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):
405
"Convert a datetime.timedelta() to milliseconds"
406
return ((td.days * 24 * 60 * 60 * 1000)
407
+ (td.seconds * 1000)
408
+ (td.microseconds // 1000))
409
410
267
411
class Client(object):
268
412
"""A representation of a client host served by this server.
269
413
270
414
Attributes:
271
_approved: bool(); 'None' if not yet approved/disapproved
415
approved: bool(); 'None' if not yet approved/disapproved
272
416
approval_delay: datetime.timedelta(); Time to wait for approval
273
417
approval_duration: datetime.timedelta(); Duration of one approval
274
418
checker: subprocess.Popen(); a running checker process used
281
425
instance %(name)s can be used in the command.
282
426
checker_initiator_tag: a gobject event source tag, or None
283
427
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
284
430
current_checker_command: string; current running checker_command
285
disable_hook: If set, called by disable() as disable_hook(self)
286
431
disable_initiator_tag: a gobject event source tag, or None
287
432
enabled: bool()
288
433
fingerprint: string (40 or 32 hexadecimal digits); used to
291
436
interval: datetime.timedelta(); How often to start a new checker
292
437
last_approval_request: datetime.datetime(); (UTC) or None
293
438
last_checked_ok: datetime.datetime(); (UTC) or None
294
last_enabled: datetime.datetime(); (UTC)
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
295
443
name: string; from the config file, used in log messages and
296
444
D-Bus identifiers
297
445
secret: bytestring; sent verbatim (over TLS) to client
298
446
timeout: datetime.timedelta(); How long from last_checked_ok
299
447
until this client is disabled
448
extended_timeout: extra long timeout when secret has been sent
300
449
runtime_expansions: Allowed attributes for runtime expansion.
450
expires: datetime.datetime(); time (UTC) when a client will be
451
disabled, or None
452
server_settings: The server_settings dict from main()
301
453
"""
302
454
303
455
runtime_expansions = ("approval_delay", "approval_duration",
304
"created", "enabled", "fingerprint",
305
"host", "interval", "last_checked_ok",
456
"created", "enabled", "expires",
457
"fingerprint", "host", "interval",
458
"last_approval_request", "last_checked_ok",
306
459
"last_enabled", "name", "timeout")
307
308
@staticmethod
309
def _timedelta_to_milliseconds(td):
310
"Convert a datetime.timedelta() to milliseconds"
311
return ((td.days * 24 * 60 * 60 * 1000)
312
+ (td.seconds * 1000)
313
+ (td.microseconds // 1000))
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
}
314
470
315
471
def timeout_milliseconds(self):
316
472
"Return the 'timeout' attribute in milliseconds"
317
return self._timedelta_to_milliseconds(self.timeout)
473
return timedelta_to_milliseconds(self.timeout)
474
475
def extended_timeout_milliseconds(self):
476
"Return the 'extended_timeout' attribute in milliseconds"
477
return timedelta_to_milliseconds(self.extended_timeout)
318
478
319
479
def interval_milliseconds(self):
320
480
"Return the 'interval' attribute in milliseconds"
321
return self._timedelta_to_milliseconds(self.interval)
322
481
return timedelta_to_milliseconds(self.interval)
482
323
483
def approval_delay_milliseconds(self):
324
return self._timedelta_to_milliseconds(self.approval_delay)
325
326
def __init__(self, name = None, disable_hook=None, config=None):
327
"""Note: the 'checker' key in 'config' sets the
328
'checker_command' attribute and *not* the 'checker'
329
attribute."""
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
534
self.name = name
331
if config is None:
332
config = {}
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
333
552
logger.debug("Creating client %r", self.name)
334
553
# Uppercase and remove spaces from fingerprint for later
335
554
# comparison purposes with return value from the fingerprint()
336
555
# function
337
self.fingerprint = (config["fingerprint"].upper()
338
.replace(" ", ""))
339
556
logger.debug(" Fingerprint: %s", self.fingerprint)
340
if "secret" in config:
341
self.secret = config["secret"].decode("base64")
342
elif "secfile" in config:
343
with open(os.path.expanduser(os.path.expandvars
344
(config["secfile"])),
345
"rb") as secfile:
346
self.secret = secfile.read()
347
else:
348
raise TypeError("No secret or secfile for client %s"
349
% self.name)
350
self.host = config.get("host", "")
351
self.created = datetime.datetime.utcnow()
352
self.enabled = False
353
self.last_approval_request = None
354
self.last_enabled = None
355
self.last_checked_ok = None
356
self.timeout = string_to_delta(config["timeout"])
357
self.interval = string_to_delta(config["interval"])
358
self.disable_hook = disable_hook
557
self.created = settings.get("created",
558
datetime.datetime.utcnow())
559
560
# attributes specific for this server instance
359
561
self.checker = None
360
562
self.checker_initiator_tag = None
361
563
self.disable_initiator_tag = None
362
564
self.checker_callback_tag = None
363
self.checker_command = config["checker"]
364
565
self.current_checker_command = None
365
self.last_connect = None
366
self._approved = None
367
self.approved_by_default = config.get("approved_by_default",
368
True)
566
self.approved = None
369
567
self.approvals_pending = 0
370
self.approval_delay = string_to_delta(
371
config["approval_delay"])
372
self.approval_duration = string_to_delta(
373
config["approval_duration"])
374
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
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)
375
582
583
# Send notice to process children that client state has changed
376
584
def send_changedstate(self):
377
self.changedstate.acquire()
378
self.changedstate.notify_all()
379
self.changedstate.release()
380
585
with self.changedstate:
586
self.changedstate.notify_all()
587
381
588
def enable(self):
382
589
"""Start this client's checker and timeout hooks"""
383
590
if getattr(self, "enabled", False):
384
591
# Already enabled
385
592
return
386
self.send_changedstate()
593
self.expires = datetime.datetime.utcnow() + self.timeout
594
self.enabled = True
387
595
self.last_enabled = datetime.datetime.utcnow()
596
self.init_checker()
597
self.send_changedstate()
598
599
def disable(self, quiet=True):
600
"""Disable this client."""
601
if not getattr(self, "enabled", False):
602
return False
603
if not quiet:
604
logger.info("Disabling client %s", self.name)
605
if getattr(self, "disable_initiator_tag", None) is not None:
606
gobject.source_remove(self.disable_initiator_tag)
607
self.disable_initiator_tag = None
608
self.expires = None
609
if getattr(self, "checker_initiator_tag", None) is not None:
610
gobject.source_remove(self.checker_initiator_tag)
611
self.checker_initiator_tag = None
612
self.stop_checker()
613
self.enabled = False
614
if not quiet:
615
self.send_changedstate()
616
# Do not run this again if called by a gobject.timeout_add
617
return False
618
619
def __del__(self):
620
self.disable()
621
622
def init_checker(self):
388
623
# Schedule a new checker to be started an 'interval' from now,
389
624
# and every interval from then on.
625
if self.checker_initiator_tag is not None:
626
gobject.source_remove(self.checker_initiator_tag)
390
627
self.checker_initiator_tag = (gobject.timeout_add
391
628
(self.interval_milliseconds(),
392
629
self.start_checker))
393
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)
394
633
self.disable_initiator_tag = (gobject.timeout_add
395
634
(self.timeout_milliseconds(),
396
635
self.disable))
397
self.enabled = True
398
636
# Also start a new checker *right now*.
399
637
self.start_checker()
400
638
401
def disable(self, quiet=True):
402
"""Disable this client."""
403
if not getattr(self, "enabled", False):
404
return False
405
if not quiet:
406
self.send_changedstate()
407
if not quiet:
408
logger.info("Disabling client %s", self.name)
409
if getattr(self, "disable_initiator_tag", False):
410
gobject.source_remove(self.disable_initiator_tag)
411
self.disable_initiator_tag = None
412
if getattr(self, "checker_initiator_tag", False):
413
gobject.source_remove(self.checker_initiator_tag)
414
self.checker_initiator_tag = None
415
self.stop_checker()
416
if self.disable_hook:
417
self.disable_hook(self)
418
self.enabled = False
419
# Do not run this again if called by a gobject.timeout_add
420
return False
421
422
def __del__(self):
423
self.disable_hook = None
424
self.disable()
425
426
639
def checker_callback(self, pid, condition, command):
427
640
"""The checker has completed, so take appropriate actions."""
428
641
self.checker_callback_tag = None
429
642
self.checker = None
430
643
if os.WIFEXITED(condition):
431
exitstatus = os.WEXITSTATUS(condition)
432
if exitstatus == 0:
644
self.last_checker_status = os.WEXITSTATUS(condition)
645
if self.last_checker_status == 0:
433
646
logger.info("Checker for %(name)s succeeded",
434
647
vars(self))
435
648
self.checked_ok()
437
650
logger.info("Checker for %(name)s failed",
438
651
vars(self))
439
652
else:
653
self.last_checker_status = -1
440
654
logger.warning("Checker for %(name)s crashed?",
441
655
vars(self))
442
656
443
657
def checked_ok(self):
444
"""Bump up the timeout for this client.
445
446
This should only be called when the client has been seen,
447
alive and well.
448
"""
658
"""Assert that the client has been seen, alive and well."""
449
659
self.last_checked_ok = datetime.datetime.utcnow()
450
gobject.source_remove(self.disable_initiator_tag)
451
self.disable_initiator_tag = (gobject.timeout_add
452
(self.timeout_milliseconds(),
453
self.disable))
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."""
665
if timeout is None:
666
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
454
675
455
676
def need_approval(self):
456
677
self.last_approval_request = datetime.datetime.utcnow()
461
682
If a checker already exists, leave it running and do
462
683
nothing."""
463
684
# The reason for not killing a running checker is that if we
464
# did that, then if a checker (for some reason) started
465
# running slowly and taking more than 'interval' time, the
466
# client would inevitably timeout, since no checker would get
467
# a chance to run to completion. If we instead leave running
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
468
689
# checkers alone, the checker would have to take more time
469
690
# than 'timeout' for the client to be disabled, which is as it
470
691
# should be.
472
693
# If a checker exists, make sure it is not a zombie
473
694
try:
474
695
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
475
except (AttributeError, OSError) as error:
476
if (isinstance(error, OSError)
477
and error.errno != errno.ECHILD):
478
raise error
696
except AttributeError:
697
pass
698
except OSError as error:
699
if error.errno != errno.ECHILD:
700
raise
479
701
else:
480
702
if pid:
481
703
logger.warning("Checker was a zombie")
484
706
self.current_checker_command)
485
707
# Start a new checker if needed
486
708
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)
487
714
try:
488
# In case checker_command has exactly one % operator
489
command = self.checker_command % self.host
490
except TypeError:
491
# Escape attributes for the shell
492
escaped_attrs = dict(
493
(attr,
494
re.escape(unicode(str(getattr(self, attr, "")),
495
errors=
496
'replace')))
497
for attr in
498
self.runtime_expansions)
499
500
try:
501
command = self.checker_command % escaped_attrs
502
except TypeError as error:
503
logger.error('Could not format string "%s":'
504
' %s', self.checker_command, error)
505
return True # Try again later
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
506
720
self.current_checker_command = command
507
721
try:
508
722
logger.info("Starting checker %r for %s",
511
725
# in normal mode, that is already done by daemon(),
512
726
# and in debug mode we don't want to. (Stdin is
513
727
# 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 })
514
736
self.checker = subprocess.Popen(command,
515
737
close_fds=True,
516
shell=True, cwd="/")
517
self.checker_callback_tag = (gobject.child_watch_add
518
(self.checker.pid,
519
self.checker_callback,
520
data=command))
521
# The checker may have completed before the gobject
522
# watch was added. Check for this.
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:
523
751
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
524
if pid:
525
gobject.source_remove(self.checker_callback_tag)
526
self.checker_callback(pid, status, command)
527
752
except OSError as error:
528
logger.error("Failed to start subprocess: %s",
529
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)
530
762
# Re-run this periodically if run by gobject.timeout_add
531
763
return True
532
764
539
771
return
540
772
logger.debug("Stopping checker for %(name)s", vars(self))
541
773
try:
542
os.kill(self.checker.pid, signal.SIGTERM)
774
self.checker.terminate()
543
775
#time.sleep(0.5)
544
776
#if self.checker.poll() is None:
545
# os.kill(self.checker.pid, signal.SIGKILL)
777
# self.checker.kill()
546
778
except OSError as error:
547
779
if error.errno != errno.ESRCH: # No such process
548
780
raise
549
781
self.checker = None
550
782
783
551
784
def dbus_service_property(dbus_interface, signature="v",
552
785
access="readwrite", byte_arrays=False):
553
786
"""Decorators for marking methods of a DBusObjectWithProperties to
564
797
# "Set" method, so we fail early here:
565
798
if byte_arrays and signature != "ay":
566
799
raise ValueError("Byte arrays not supported for non-'ay'"
567
" signature %r" % signature)
800
" signature {0!r}".format(signature))
568
801
def decorator(func):
569
802
func._dbus_is_property = True
570
803
func._dbus_interface = dbus_interface
578
811
return decorator
579
812
580
813
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
581
851
class DBusPropertyException(dbus.exceptions.DBusException):
582
852
"""A base class for D-Bus property-related exceptions
583
853
"""
599
869
600
870
class DBusObjectWithProperties(dbus.service.Object):
601
871
"""A D-Bus object with properties.
602
872
603
873
Classes inheriting from this can use the dbus_service_property
604
874
decorator to expose methods as D-Bus properties. It exposes the
605
875
standard Get(), Set(), and GetAll() methods on the D-Bus.
606
876
"""
607
877
608
878
@staticmethod
609
def _is_dbus_property(obj):
610
return getattr(obj, "_dbus_is_property", False)
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)
611
887
612
def _get_all_dbus_properties(self):
888
def _get_all_dbus_things(self, thing):
613
889
"""Returns a generator of (name, attribute) pairs
614
890
"""
615
return ((prop._dbus_name, prop)
616
for name, prop in
617
inspect.getmembers(self, self._is_dbus_property))
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)))
618
898
619
899
def _get_dbus_property(self, interface_name, property_name):
620
900
"""Returns a bound method if one exists which is a D-Bus
621
901
property with the specified name and interface.
622
902
"""
623
for name in (property_name,
624
property_name + "_dbus_property"):
625
prop = getattr(self, name, None)
626
if (prop is None
627
or not self._is_dbus_property(prop)
628
or prop._dbus_name != property_name
629
or (interface_name and prop._dbus_interface
630
and interface_name != prop._dbus_interface)):
631
continue
632
return prop
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
633
911
# No such property
634
912
raise DBusPropertyNotFound(self.dbus_object_path + ":"
635
913
+ interface_name + "."
659
937
# The byte_arrays option is not supported yet on
660
938
# signatures other than "ay".
661
939
if prop._dbus_signature != "ay":
662
raise ValueError
663
value = dbus.ByteArray(''.join(unichr(byte)
664
for byte in value))
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))
665
945
prop(value)
666
946
667
947
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
669
949
def GetAll(self, interface_name):
670
950
"""Standard D-Bus property GetAll() method, see D-Bus
671
951
standard.
672
952
673
953
Note: Will not include properties with access="write".
674
954
"""
675
all = {}
676
for name, prop in self._get_all_dbus_properties():
955
properties = {}
956
for name, prop in self._get_all_dbus_things("property"):
677
957
if (interface_name
678
958
and interface_name != prop._dbus_interface):
679
959
# Interface non-empty but did not match
683
963
continue
684
964
value = prop()
685
965
if not hasattr(value, "variant_level"):
686
all[name] = value
966
properties[name] = value
687
967
continue
688
all[name] = type(value)(value, variant_level=
689
value.variant_level+1)
690
return dbus.Dictionary(all, signature="sv")
968
properties[name] = type(value)(value, variant_level=
969
value.variant_level+1)
970
return dbus.Dictionary(properties, signature="sv")
691
971
692
972
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
693
973
out_signature="s",
694
974
path_keyword='object_path',
695
975
connection_keyword='connection')
696
976
def Introspect(self, object_path, connection):
697
"""Standard D-Bus method, overloaded to insert property tags.
977
"""Overloading of standard D-Bus method.
978
979
Inserts property tags and interface annotation tags.
698
980
"""
699
981
xmlstring = dbus.service.Object.Introspect(self, object_path,
700
982
connection)
707
989
e.setAttribute("access", prop._dbus_access)
708
990
return e
709
991
for if_tag in document.getElementsByTagName("interface"):
992
# Add property tags
710
993
for tag in (make_tag(document, name, prop)
711
994
for name, prop
712
in self._get_all_dbus_properties()
995
in self._get_all_dbus_things("property")
713
996
if prop._dbus_interface
714
997
== if_tag.getAttribute("name")):
715
998
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)
716
1030
# Add the names to the return values for the
717
1031
# "org.freedesktop.DBus.Properties" methods
718
1032
if (if_tag.getAttribute("name")
733
1047
except (AttributeError, xml.dom.DOMException,
734
1048
xml.parsers.expat.ExpatError) as error:
735
1049
logger.error("Failed to override Introspection method",
736
error)
1050
exc_info=error)
737
1051
return xmlstring
738
1052
739
1053
1054
def datetime_to_dbus(dt, variant_level=0):
1055
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1056
if dt is None:
1057
return dbus.String("", variant_level = variant_level)
1058
return dbus.String(dt.isoformat(),
1059
variant_level=variant_level)
1060
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"})
740
1233
class ClientDBus(Client, DBusObjectWithProperties):
741
1234
"""A Client class using D-Bus
742
1235
751
1244
# dbus.service.Object doesn't use super(), so we can't either.
752
1245
753
1246
def __init__(self, bus = None, *args, **kwargs):
754
self._approvals_pending = 0
755
1247
self.bus = bus
756
1248
Client.__init__(self, *args, **kwargs)
757
1249
# Only now, when this client is initialized, can it show up on
763
1255
("/clients/" + client_object_name))
764
1256
DBusObjectWithProperties.__init__(self, self.bus,
765
1257
self.dbus_object_path)
766
767
def _get_approvals_pending(self):
768
return self._approvals_pending
769
def _set_approvals_pending(self, value):
770
old_value = self._approvals_pending
771
self._approvals_pending = value
772
bval = bool(value)
773
if (hasattr(self, "dbus_object_path")
774
and bval is not bool(old_value)):
775
dbus_bool = dbus.Boolean(bval, variant_level=1)
776
self.PropertyChanged(dbus.String("ApprovalPending"),
777
dbus_bool)
778
779
approvals_pending = property(_get_approvals_pending,
780
_set_approvals_pending)
781
del _get_approvals_pending, _set_approvals_pending
782
783
@staticmethod
784
def _datetime_to_dbus(dt, variant_level=0):
785
"""Convert a UTC datetime.datetime() to a D-Bus type."""
786
return dbus.String(dt.isoformat(),
787
variant_level=variant_level)
788
789
def enable(self):
790
oldstate = getattr(self, "enabled", False)
791
r = Client.enable(self)
792
if oldstate != self.enabled:
793
# Emit D-Bus signals
794
self.PropertyChanged(dbus.String("Enabled"),
795
dbus.Boolean(True, variant_level=1))
796
self.PropertyChanged(
797
dbus.String("LastEnabled"),
798
self._datetime_to_dbus(self.last_enabled,
799
variant_level=1))
800
return r
801
802
def disable(self, quiet = False):
803
oldstate = getattr(self, "enabled", False)
804
r = Client.disable(self, quiet=quiet)
805
if not quiet and oldstate != self.enabled:
806
# Emit D-Bus signal
807
self.PropertyChanged(dbus.String("Enabled"),
808
dbus.Boolean(False, variant_level=1))
809
return r
1258
1259
def notifychangeproperty(transform_func,
1260
dbus_name, type_func=lambda x: x,
1261
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
1268
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
1271
"""
1272
attrname = "_{0}".format(dbus_name)
1273
def setter(self, value):
1274
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)
1281
self.PropertyChanged(dbus.String(dbus_name),
1282
dbus_value)
1283
setattr(self, attrname, value)
1284
1285
return property(lambda self: getattr(self, attrname), setter)
1286
1287
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1288
approvals_pending = notifychangeproperty(dbus.Boolean,
1289
"ApprovalPending",
1290
type_func = bool)
1291
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1292
last_enabled = notifychangeproperty(datetime_to_dbus,
1293
"LastEnabled")
1294
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1295
type_func = lambda checker:
1296
checker is not None)
1297
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1298
"LastCheckedOK")
1299
last_checker_status = notifychangeproperty(dbus.Int16,
1300
"LastCheckerStatus")
1301
last_approval_request = notifychangeproperty(
1302
datetime_to_dbus, "LastApprovalRequest")
1303
approved_by_default = notifychangeproperty(dbus.Boolean,
1304
"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)
1312
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)
1323
checker_command = notifychangeproperty(dbus.String, "Checker")
1324
1325
del notifychangeproperty
810
1326
811
1327
def __del__(self, *args, **kwargs):
812
1328
try:
821
1337
*args, **kwargs):
822
1338
self.checker_callback_tag = None
823
1339
self.checker = None
824
# Emit D-Bus signal
825
self.PropertyChanged(dbus.String("CheckerRunning"),
826
dbus.Boolean(False, variant_level=1))
827
1340
if os.WIFEXITED(condition):
828
1341
exitstatus = os.WEXITSTATUS(condition)
829
1342
# Emit D-Bus signal
839
1352
return Client.checker_callback(self, pid, condition, command,
840
1353
*args, **kwargs)
841
1354
842
def checked_ok(self, *args, **kwargs):
843
Client.checked_ok(self, *args, **kwargs)
844
# Emit D-Bus signal
845
self.PropertyChanged(
846
dbus.String("LastCheckedOK"),
847
(self._datetime_to_dbus(self.last_checked_ok,
848
variant_level=1)))
849
850
def need_approval(self, *args, **kwargs):
851
r = Client.need_approval(self, *args, **kwargs)
852
# Emit D-Bus signal
853
self.PropertyChanged(
854
dbus.String("LastApprovalRequest"),
855
(self._datetime_to_dbus(self.last_approval_request,
856
variant_level=1)))
857
return r
858
859
1355
def start_checker(self, *args, **kwargs):
860
old_checker = self.checker
861
if self.checker is not None:
862
old_checker_pid = self.checker.pid
863
else:
864
old_checker_pid = None
1356
old_checker_pid = getattr(self.checker, "pid", None)
865
1357
r = Client.start_checker(self, *args, **kwargs)
866
1358
# Only if new checker process was started
867
1359
if (self.checker is not None
868
1360
and old_checker_pid != self.checker.pid):
869
1361
# Emit D-Bus signal
870
1362
self.CheckerStarted(self.current_checker_command)
871
self.PropertyChanged(
872
dbus.String("CheckerRunning"),
873
dbus.Boolean(True, variant_level=1))
874
1363
return r
875
1364
876
def stop_checker(self, *args, **kwargs):
877
old_checker = getattr(self, "checker", None)
878
r = Client.stop_checker(self, *args, **kwargs)
879
if (old_checker is not None
880
and getattr(self, "checker", None) is None):
881
self.PropertyChanged(dbus.String("CheckerRunning"),
882
dbus.Boolean(False, variant_level=1))
883
return r
884
885
1365
def _reset_approved(self):
886
self._approved = None
1366
self.approved = None
887
1367
return False
888
1368
889
1369
def approve(self, value=True):
890
self.send_changedstate()
891
self._approved = value
892
gobject.timeout_add(self._timedelta_to_milliseconds
1370
self.approved = value
1371
gobject.timeout_add(timedelta_to_milliseconds
893
1372
(self.approval_duration),
894
1373
self._reset_approved)
895
1374
self.send_changedstate()
896
1375
897
1376
## D-Bus methods, signals & properties
898
_interface = "se.bsnet.fukt.Mandos.Client"
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"}
899
1385
900
1386
## Signals
901
1387
987
1473
if value is None: # get
988
1474
return dbus.Boolean(self.approved_by_default)
989
1475
self.approved_by_default = bool(value)
990
# Emit D-Bus signal
991
self.PropertyChanged(dbus.String("ApprovedByDefault"),
992
dbus.Boolean(value, variant_level=1))
993
1476
994
1477
# ApprovalDelay - property
995
1478
@dbus_service_property(_interface, signature="t",
998
1481
if value is None: # get
999
1482
return dbus.UInt64(self.approval_delay_milliseconds())
1000
1483
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1001
# Emit D-Bus signal
1002
self.PropertyChanged(dbus.String("ApprovalDelay"),
1003
dbus.UInt64(value, variant_level=1))
1004
1484
1005
1485
# ApprovalDuration - property
1006
1486
@dbus_service_property(_interface, signature="t",
1007
1487
access="readwrite")
1008
1488
def ApprovalDuration_dbus_property(self, value=None):
1009
1489
if value is None: # get
1010
return dbus.UInt64(self._timedelta_to_milliseconds(
1490
return dbus.UInt64(timedelta_to_milliseconds(
1011
1491
self.approval_duration))
1012
1492
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1013
# Emit D-Bus signal
1014
self.PropertyChanged(dbus.String("ApprovalDuration"),
1015
dbus.UInt64(value, variant_level=1))
1016
1493
1017
1494
# Name - property
1018
1495
@dbus_service_property(_interface, signature="s", access="read")
1030
1507
def Host_dbus_property(self, value=None):
1031
1508
if value is None: # get
1032
1509
return dbus.String(self.host)
1033
self.host = value
1034
# Emit D-Bus signal
1035
self.PropertyChanged(dbus.String("Host"),
1036
dbus.String(value, variant_level=1))
1510
self.host = unicode(value)
1037
1511
1038
1512
# Created - property
1039
1513
@dbus_service_property(_interface, signature="s", access="read")
1040
1514
def Created_dbus_property(self):
1041
return dbus.String(self._datetime_to_dbus(self.created))
1515
return datetime_to_dbus(self.created)
1042
1516
1043
1517
# LastEnabled - property
1044
1518
@dbus_service_property(_interface, signature="s", access="read")
1045
1519
def LastEnabled_dbus_property(self):
1046
if self.last_enabled is None:
1047
return dbus.String("")
1048
return dbus.String(self._datetime_to_dbus(self.last_enabled))
1520
return datetime_to_dbus(self.last_enabled)
1049
1521
1050
1522
# Enabled - property
1051
1523
@dbus_service_property(_interface, signature="b",
1065
1537
if value is not None:
1066
1538
self.checked_ok()
1067
1539
return
1068
if self.last_checked_ok is None:
1069
return dbus.String("")
1070
return dbus.String(self._datetime_to_dbus(self
1071
.last_checked_ok))
1540
return datetime_to_dbus(self.last_checked_ok)
1541
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
# Expires - property
1549
@dbus_service_property(_interface, signature="s", access="read")
1550
def Expires_dbus_property(self):
1551
return datetime_to_dbus(self.expires)
1072
1552
1073
1553
# LastApprovalRequest - property
1074
1554
@dbus_service_property(_interface, signature="s", access="read")
1075
1555
def LastApprovalRequest_dbus_property(self):
1076
if self.last_approval_request is None:
1077
return dbus.String("")
1078
return dbus.String(self.
1079
_datetime_to_dbus(self
1080
.last_approval_request))
1556
return datetime_to_dbus(self.last_approval_request)
1081
1557
1082
1558
# Timeout - property
1083
1559
@dbus_service_property(_interface, signature="t",
1085
1561
def Timeout_dbus_property(self, value=None):
1086
1562
if value is None: # get
1087
1563
return dbus.UInt64(self.timeout_milliseconds())
1564
old_timeout = self.timeout
1088
1565
self.timeout = datetime.timedelta(0, 0, 0, value)
1089
# Emit D-Bus signal
1090
self.PropertyChanged(dbus.String("Timeout"),
1091
dbus.UInt64(value, variant_level=1))
1092
if getattr(self, "disable_initiator_tag", None) is None:
1093
return
1094
# Reschedule timeout
1095
gobject.source_remove(self.disable_initiator_tag)
1096
self.disable_initiator_tag = None
1097
time_to_die = (self.
1098
_timedelta_to_milliseconds((self
1099
.last_checked_ok
1100
+ self.timeout)
1101
- datetime.datetime
1102
.utcnow()))
1103
if time_to_die <= 0:
1104
# The timeout has passed
1105
self.disable()
1106
else:
1107
self.disable_initiator_tag = (gobject.timeout_add
1108
(time_to_die, self.disable))
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
1583
# ExtendedTimeout - property
1584
@dbus_service_property(_interface, signature="t",
1585
access="readwrite")
1586
def ExtendedTimeout_dbus_property(self, value=None):
1587
if value is None: # get
1588
return dbus.UInt64(self.extended_timeout_milliseconds())
1589
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1109
1590
1110
1591
# Interval - property
1111
1592
@dbus_service_property(_interface, signature="t",
1114
1595
if value is None: # get
1115
1596
return dbus.UInt64(self.interval_milliseconds())
1116
1597
self.interval = datetime.timedelta(0, 0, 0, value)
1117
# Emit D-Bus signal
1118
self.PropertyChanged(dbus.String("Interval"),
1119
dbus.UInt64(value, variant_level=1))
1120
1598
if getattr(self, "checker_initiator_tag", None) is None:
1121
1599
return
1122
# Reschedule checker run
1123
gobject.source_remove(self.checker_initiator_tag)
1124
self.checker_initiator_tag = (gobject.timeout_add
1125
(value, self.start_checker))
1126
self.start_checker() # Start one now, too
1127
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
1128
1607
# Checker - property
1129
1608
@dbus_service_property(_interface, signature="s",
1130
1609
access="readwrite")
1131
1610
def Checker_dbus_property(self, value=None):
1132
1611
if value is None: # get
1133
1612
return dbus.String(self.checker_command)
1134
self.checker_command = value
1135
# Emit D-Bus signal
1136
self.PropertyChanged(dbus.String("Checker"),
1137
dbus.String(self.checker_command,
1138
variant_level=1))
1613
self.checker_command = unicode(value)
1139
1614
1140
1615
# CheckerRunning - property
1141
1616
@dbus_service_property(_interface, signature="b",
1168
1643
self._pipe.send(('init', fpr, address))
1169
1644
if not self._pipe.recv():
1170
1645
raise KeyError()
1171
1646
1172
1647
def __getattribute__(self, name):
1173
if(name == '_pipe'):
1648
if name == '_pipe':
1174
1649
return super(ProxyClient, self).__getattribute__(name)
1175
1650
self._pipe.send(('getattr', name))
1176
1651
data = self._pipe.recv()
1181
1656
self._pipe.send(('funcall', name, args, kwargs))
1182
1657
return self._pipe.recv()[1]
1183
1658
return func
1184
1659
1185
1660
def __setattr__(self, name, value):
1186
if(name == '_pipe'):
1661
if name == '_pipe':
1187
1662
return super(ProxyClient, self).__setattr__(name, value)
1188
1663
self._pipe.send(('setattr', name, value))
1189
1664
1200
1675
unicode(self.client_address))
1201
1676
logger.debug("Pipe FD: %d",
1202
1677
self.server.child_pipe.fileno())
1203
1678
1204
1679
session = (gnutls.connection
1205
1680
.ClientSession(self.request,
1206
1681
gnutls.connection
1207
1682
.X509Credentials()))
1208
1683
1209
1684
# Note: gnutls.connection.X509Credentials is really a
1210
1685
# generic GnuTLS certificate credentials object so long as
1211
1686
# no X.509 keys are added to it. Therefore, we can use it
1212
1687
# here despite using OpenPGP certificates.
1213
1688
1214
1689
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1215
1690
# "+AES-256-CBC", "+SHA1",
1216
1691
# "+COMP-NULL", "+CTYPE-OPENPGP",
1222
1697
(gnutls.library.functions
1223
1698
.gnutls_priority_set_direct(session._c_object,
1224
1699
priority, None))
1225
1700
1226
1701
# Start communication using the Mandos protocol
1227
1702
# Get protocol number
1228
1703
line = self.request.makefile().readline()
1229
1704
logger.debug("Protocol version: %r", line)
1230
1705
try:
1231
1706
if int(line.strip().split()[0]) > 1:
1232
raise RuntimeError
1707
raise RuntimeError(line)
1233
1708
except (ValueError, IndexError, RuntimeError) as error:
1234
1709
logger.error("Unknown protocol version: %s", error)
1235
1710
return
1236
1711
1237
1712
# Start GnuTLS connection
1238
1713
try:
1239
1714
session.handshake()
1243
1718
# established. Just abandon the request.
1244
1719
return
1245
1720
logger.debug("Handshake succeeded")
1246
1721
1247
1722
approval_required = False
1248
1723
try:
1249
1724
try:
1254
1729
logger.warning("Bad certificate: %s", error)
1255
1730
return
1256
1731
logger.debug("Fingerprint: %s", fpr)
1257
1732
1258
1733
try:
1259
1734
client = ProxyClient(child_pipe, fpr,
1260
1735
self.client_address)
1272
1747
client.name)
1273
1748
if self.server.use_dbus:
1274
1749
# Emit D-Bus signal
1275
client.Rejected("Disabled")
1750
client.Rejected("Disabled")
1276
1751
return
1277
1752
1278
if client._approved or not client.approval_delay:
1753
if client.approved or not client.approval_delay:
1279
1754
#We are approved or approval is disabled
1280
1755
break
1281
elif client._approved is None:
1756
elif client.approved is None:
1282
1757
logger.info("Client %s needs approval",
1283
1758
client.name)
1284
1759
if self.server.use_dbus:
1295
1770
return
1296
1771
1297
1772
#wait until timeout or approved
1298
#x = float(client._timedelta_to_milliseconds(delay))
1299
1773
time = datetime.datetime.now()
1300
1774
client.changedstate.acquire()
1301
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
1775
client.changedstate.wait(
1776
float(timedelta_to_milliseconds(delay)
1777
/ 1000))
1302
1778
client.changedstate.release()
1303
1779
time2 = datetime.datetime.now()
1304
1780
if (time2 - time) >= delay:
1320
1796
try:
1321
1797
sent = session.send(client.secret[sent_size:])
1322
1798
except gnutls.errors.GNUTLSError as error:
1323
logger.warning("gnutls send failed")
1799
logger.warning("gnutls send failed",
1800
exc_info=error)
1324
1801
return
1325
1802
logger.debug("Sent: %d, remaining: %d",
1326
1803
sent, len(client.secret)
1327
1804
- (sent_size + sent))
1328
1805
sent_size += sent
1329
1806
1330
1807
logger.info("Sending secret to %s", client.name)
1331
# bump the timeout as if seen
1332
client.checked_ok()
1808
# bump the timeout using extended_timeout
1809
client.bump_timeout(client.extended_timeout)
1333
1810
if self.server.use_dbus:
1334
1811
# Emit D-Bus signal
1335
1812
client.GotSecret()
1340
1817
try:
1341
1818
session.bye()
1342
1819
except gnutls.errors.GNUTLSError as error:
1343
logger.warning("GnuTLS bye failed")
1820
logger.warning("GnuTLS bye failed",
1821
exc_info=error)
1344
1822
1345
1823
@staticmethod
1346
1824
def peer_certificate(session):
1402
1880
# Convert the buffer to a Python bytestring
1403
1881
fpr = ctypes.string_at(buf, buf_len.value)
1404
1882
# Convert the bytestring to hexadecimal notation
1405
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
1883
hex_fpr = binascii.hexlify(fpr).upper()
1406
1884
return hex_fpr
1407
1885
1408
1886
1411
1889
def sub_process_main(self, request, address):
1412
1890
try:
1413
1891
self.finish_request(request, address)
1414
except:
1892
except Exception:
1415
1893
self.handle_error(request, address)
1416
1894
self.close_request(request)
1417
1895
1418
1896
def process_request(self, request, address):
1419
1897
"""Start a new process to process the request."""
1420
multiprocessing.Process(target = self.sub_process_main,
1421
args = (request, address)).start()
1898
proc = multiprocessing.Process(target = self.sub_process_main,
1899
args = (request, address))
1900
proc.start()
1901
return proc
1902
1422
1903
1423
1904
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1424
1905
""" adds a pipe to the MixIn """
1428
1909
This function creates a new pipe in self.pipe
1429
1910
"""
1430
1911
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1431
1432
super(MultiprocessingMixInWithPipe,
1433
self).process_request(request, client_address)
1912
1913
proc = MultiprocessingMixIn.process_request(self, request,
1914
client_address)
1434
1915
self.child_pipe.close()
1435
self.add_pipe(parent_pipe)
1436
1437
def add_pipe(self, parent_pipe):
1916
self.add_pipe(parent_pipe, proc)
1917
1918
def add_pipe(self, parent_pipe, proc):
1438
1919
"""Dummy function; override as necessary"""
1439
raise NotImplementedError
1920
raise NotImplementedError()
1921
1440
1922
1441
1923
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1442
1924
socketserver.TCPServer, object):
1448
1930
use_ipv6: Boolean; to use IPv6 or not
1449
1931
"""
1450
1932
def __init__(self, server_address, RequestHandlerClass,
1451
interface=None, use_ipv6=True):
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
"""
1452
1937
self.interface = interface
1453
1938
if use_ipv6:
1454
1939
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.
1455
1966
socketserver.TCPServer.__init__(self, server_address,
1456
1967
RequestHandlerClass)
1968
1457
1969
def server_bind(self):
1458
1970
"""This overrides the normal server_bind() function
1459
1971
to bind to an interface if one was specified, and also NOT to
1467
1979
try:
1468
1980
self.socket.setsockopt(socket.SOL_SOCKET,
1469
1981
SO_BINDTODEVICE,
1470
str(self.interface
1471
+ '\0'))
1982
str(self.interface + '\0'))
1472
1983
except socket.error as error:
1473
if error[0] == errno.EPERM:
1474
logger.error("No permission to"
1475
" bind to interface %s",
1476
self.interface)
1477
elif error[0] == errno.ENOPROTOOPT:
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:
1478
1988
logger.error("SO_BINDTODEVICE not available;"
1479
1989
" cannot bind to interface %s",
1480
1990
self.interface)
1991
elif error.errno == errno.ENODEV:
1992
logger.error("Interface %s does not exist,"
1993
" cannot bind", self.interface)
1481
1994
else:
1482
1995
raise
1483
1996
# Only bind(2) the socket if we really need to.
1486
1999
if self.address_family == socket.AF_INET6:
1487
2000
any_address = "::" # in6addr_any
1488
2001
else:
1489
any_address = socket.INADDR_ANY
2002
any_address = "0.0.0.0" # INADDR_ANY
1490
2003
self.server_address = (any_address,
1491
2004
self.server_address[1])
1492
2005
elif not self.server_address[1]:
1513
2026
"""
1514
2027
def __init__(self, server_address, RequestHandlerClass,
1515
2028
interface=None, use_ipv6=True, clients=None,
1516
gnutls_priority=None, use_dbus=True):
2029
gnutls_priority=None, use_dbus=True, socketfd=None):
1517
2030
self.enabled = False
1518
2031
self.clients = clients
1519
2032
if self.clients is None:
1520
self.clients = set()
2033
self.clients = {}
1521
2034
self.use_dbus = use_dbus
1522
2035
self.gnutls_priority = gnutls_priority
1523
2036
IPv6_TCPServer.__init__(self, server_address,
1524
2037
RequestHandlerClass,
1525
2038
interface = interface,
1526
use_ipv6 = use_ipv6)
2039
use_ipv6 = use_ipv6,
2040
socketfd = socketfd)
1527
2041
def server_activate(self):
1528
2042
if self.enabled:
1529
2043
return socketserver.TCPServer.server_activate(self)
2044
1530
2045
def enable(self):
1531
2046
self.enabled = True
1532
def add_pipe(self, parent_pipe):
2047
2048
def add_pipe(self, parent_pipe, proc):
1533
2049
# Call "handle_ipc" for both data and EOF events
1534
2050
gobject.io_add_watch(parent_pipe.fileno(),
1535
2051
gobject.IO_IN | gobject.IO_HUP,
1536
2052
functools.partial(self.handle_ipc,
1537
parent_pipe = parent_pipe))
1538
2053
parent_pipe =
2054
parent_pipe,
2055
proc = proc))
2056
1539
2057
def handle_ipc(self, source, condition, parent_pipe=None,
1540
client_object=None):
1541
condition_names = {
1542
gobject.IO_IN: "IN", # There is data to read.
1543
gobject.IO_OUT: "OUT", # Data can be written (without
1544
# blocking).
1545
gobject.IO_PRI: "PRI", # There is urgent data to read.
1546
gobject.IO_ERR: "ERR", # Error condition.
1547
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1548
# broken, usually for pipes and
1549
# sockets).
1550
}
1551
conditions_string = ' | '.join(name
1552
for cond, name in
1553
condition_names.iteritems()
1554
if cond & condition)
1555
# error or the other end of multiprocessing.Pipe has closed
1556
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
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()
1557
2063
return False
1558
2064
1559
2065
# Read a request from the child
1564
2070
fpr = request[1]
1565
2071
address = request[2]
1566
2072
1567
for c in self.clients:
2073
for c in self.clients.itervalues():
1568
2074
if c.fingerprint == fpr:
1569
2075
client = c
1570
2076
break
1573
2079
"dress: %s", fpr, address)
1574
2080
if self.use_dbus:
1575
2081
# Emit D-Bus signal
1576
mandos_dbus_service.ClientNotFound(fpr, address[0])
2082
mandos_dbus_service.ClientNotFound(fpr,
2083
address[0])
1577
2084
parent_pipe.send(False)
1578
2085
return False
1579
2086
1580
2087
gobject.io_add_watch(parent_pipe.fileno(),
1581
2088
gobject.IO_IN | gobject.IO_HUP,
1582
2089
functools.partial(self.handle_ipc,
1583
parent_pipe = parent_pipe,
1584
client_object = client))
2090
parent_pipe =
2091
parent_pipe,
2092
proc = proc,
2093
client_object =
2094
client))
1585
2095
parent_pipe.send(True)
1586
# remove the old hook in favor of the new above hook on same fileno
2096
# remove the old hook in favor of the new above hook on
2097
# same fileno
1587
2098
return False
1588
2099
if command == 'funcall':
1589
2100
funcname = request[1]
1590
2101
args = request[2]
1591
2102
kwargs = request[3]
1592
2103
1593
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
1594
2104
parent_pipe.send(('data', getattr(client_object,
2105
funcname)(*args,
2106
**kwargs)))
2107
1595
2108
if command == 'getattr':
1596
2109
attrname = request[1]
1597
2110
if callable(client_object.__getattribute__(attrname)):
1598
2111
parent_pipe.send(('function',))
1599
2112
else:
1600
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
2113
parent_pipe.send(('data', client_object
2114
.__getattribute__(attrname)))
1601
2115
1602
2116
if command == 'setattr':
1603
2117
attrname = request[1]
1604
2118
value = request[2]
1605
2119
setattr(client_object, attrname, value)
1606
2120
1607
2121
return True
1608
2122
1609
2123
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
1610
2223
def string_to_delta(interval):
1611
2224
"""Parse a string and return a datetime.timedelta
1612
2225
1623
2236
>>> string_to_delta('5m 30s')
1624
2237
datetime.timedelta(0, 330)
1625
2238
"""
2239
2240
try:
2241
return rfc3339_duration_to_delta(interval)
2242
except ValueError:
2243
pass
2244
1626
2245
timevalue = datetime.timedelta(0)
1627
2246
for s in interval.split():
1628
2247
try:
1639
2258
elif suffix == "w":
1640
2259
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1641
2260
else:
1642
raise ValueError("Unknown suffix %r" % suffix)
1643
except (ValueError, IndexError) as e:
2261
raise ValueError("Unknown suffix {0!r}"
2262
.format(suffix))
2263
except IndexError as e:
1644
2264
raise ValueError(*(e.args))
1645
2265
timevalue += delta
1646
2266
return timevalue
1647
2267
1648
2268
1649
def if_nametoindex(interface):
1650
"""Call the C function if_nametoindex(), or equivalent
1651
1652
Note: This function cannot accept a unicode string."""
1653
global if_nametoindex
1654
try:
1655
if_nametoindex = (ctypes.cdll.LoadLibrary
1656
(ctypes.util.find_library("c"))
1657
.if_nametoindex)
1658
except (OSError, AttributeError):
1659
logger.warning("Doing if_nametoindex the hard way")
1660
def if_nametoindex(interface):
1661
"Get an interface index the hard way, i.e. using fcntl()"
1662
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1663
with contextlib.closing(socket.socket()) as s:
1664
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1665
struct.pack(str("16s16x"),
1666
interface))
1667
interface_index = struct.unpack(str("I"),
1668
ifreq[16:20])[0]
1669
return interface_index
1670
return if_nametoindex(interface)
1671
1672
1673
2269
def daemon(nochdir = False, noclose = False):
1674
2270
"""See daemon(3). Standard BSD Unix function.
1675
2271
1683
2279
sys.exit()
1684
2280
if not noclose:
1685
2281
# Close all standard open file descriptors
1686
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2282
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1687
2283
if not stat.S_ISCHR(os.fstat(null).st_mode):
1688
2284
raise OSError(errno.ENODEV,
1689
"%s not a character device"
1690
% os.path.devnull)
2285
"{0} not a character device"
2286
.format(os.devnull))
1691
2287
os.dup2(null, sys.stdin.fileno())
1692
2288
os.dup2(null, sys.stdout.fileno())
1693
2289
os.dup2(null, sys.stderr.fileno())
1702
2298
1703
2299
parser = argparse.ArgumentParser()
1704
2300
parser.add_argument("-v", "--version", action="version",
1705
version = "%%(prog)s %s" % version,
2301
version = "%(prog)s {0}".format(version),
1706
2302
help="show version number and exit")
1707
2303
parser.add_argument("-i", "--interface", metavar="IF",
1708
2304
help="Bind to interface IF")
1714
2310
help="Run self-test")
1715
2311
parser.add_argument("--debug", action="store_true",
1716
2312
help="Debug mode; run in foreground and log"
1717
" to terminal")
2313
" to terminal", default=None)
1718
2314
parser.add_argument("--debuglevel", metavar="LEVEL",
1719
2315
help="Debug level for stdout output")
1720
2316
parser.add_argument("--priority", help="GnuTLS"
1727
2323
" files")
1728
2324
parser.add_argument("--no-dbus", action="store_false",
1729
2325
dest="use_dbus", help="Do not provide D-Bus"
1730
" system bus interface")
2326
" system bus interface", default=None)
1731
2327
parser.add_argument("--no-ipv6", action="store_false",
1732
dest="use_ipv6", help="Do not use IPv6")
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
1733
2344
options = parser.parse_args()
1734
2345
1735
2346
if options.check:
1736
2347
import doctest
1737
doctest.testmod()
1738
sys.exit()
2348
fail_count, test_count = doctest.testmod()
2349
sys.exit(os.EX_OK if fail_count == 0 else 1)
1739
2350
1740
2351
# Default values for config file for server-global settings
1741
2352
server_defaults = { "interface": "",
1743
2354
"port": "",
1744
2355
"debug": "False",
1745
2356
"priority":
1746
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2357
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:+SIGN-RSA-SHA224:+SIGN-RSA-RMD160",
1747
2358
"servicename": "Mandos",
1748
2359
"use_dbus": "True",
1749
2360
"use_ipv6": "True",
1750
2361
"debuglevel": "",
2362
"restore": "True",
2363
"socket": "",
2364
"statedir": "/var/lib/mandos",
2365
"foreground": "False",
2366
"zeroconf": "True",
1751
2367
}
1752
2368
1753
2369
# Parse config file for server-global settings
1758
2374
# Convert the SafeConfigParser object to a dict
1759
2375
server_settings = server_config.defaults()
1760
2376
# Use the appropriate methods on the non-string config options
1761
for option in ("debug", "use_dbus", "use_ipv6"):
2377
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
1762
2378
server_settings[option] = server_config.getboolean("DEFAULT",
1763
2379
option)
1764
2380
if server_settings["port"]:
1765
2381
server_settings["port"] = server_config.getint("DEFAULT",
1766
2382
"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"])
1767
2392
del server_config
1768
2393
1769
2394
# Override the settings from the config file with command line
1770
2395
# options, if set.
1771
2396
for option in ("interface", "address", "port", "debug",
1772
2397
"priority", "servicename", "configdir",
1773
"use_dbus", "use_ipv6", "debuglevel"):
2398
"use_dbus", "use_ipv6", "debuglevel", "restore",
2399
"statedir", "socket", "foreground", "zeroconf"):
1774
2400
value = getattr(options, option)
1775
2401
if value is not None:
1776
2402
server_settings[option] = value
1779
2405
for option in server_settings.keys():
1780
2406
if type(server_settings[option]) is str:
1781
2407
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
1782
2415
# Now we have our good server settings in "server_settings"
1783
2416
1784
2417
##################################################################
1785
2418
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
1786
2425
# For convenience
1787
2426
debug = server_settings["debug"]
1788
2427
debuglevel = server_settings["debuglevel"]
1789
2428
use_dbus = server_settings["use_dbus"]
1790
2429
use_ipv6 = server_settings["use_ipv6"]
1791
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
1792
2444
if server_settings["servicename"] != "Mandos":
1793
2445
syslogger.setFormatter(logging.Formatter
1794
('Mandos (%s) [%%(process)d]:'
1795
' %%(levelname)s: %%(message)s'
1796
% server_settings["servicename"]))
2446
('Mandos ({0}) [%(process)d]:'
2447
' %(levelname)s: %(message)s'
2448
.format(server_settings
2449
["servicename"])))
1797
2450
1798
2451
# Parse config file with clients
1799
client_defaults = { "timeout": "1h",
1800
"interval": "5m",
1801
"checker": "fping -q -- %%(host)s",
1802
"host": "",
1803
"approval_delay": "0s",
1804
"approval_duration": "1s",
1805
}
1806
client_config = configparser.SafeConfigParser(client_defaults)
2452
client_config = configparser.SafeConfigParser(Client
2453
.client_defaults)
1807
2454
client_config.read(os.path.join(server_settings["configdir"],
1808
2455
"clients.conf"))
1809
2456
1810
2457
global mandos_dbus_service
1811
2458
mandos_dbus_service = None
1812
2459
2460
socketfd = None
2461
if server_settings["socket"] != "":
2462
socketfd = server_settings["socket"]
1813
2463
tcp_server = MandosServer((server_settings["address"],
1814
2464
server_settings["port"]),
1815
2465
ClientHandler,
1818
2468
use_ipv6=use_ipv6,
1819
2469
gnutls_priority=
1820
2470
server_settings["priority"],
1821
use_dbus=use_dbus)
1822
if not debug:
1823
pidfilename = "/var/run/mandos.pid"
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
1824
2478
try:
1825
2479
pidfile = open(pidfilename, "w")
1826
except IOError:
1827
logger.error("Could not open file %r", pidfilename)
2480
except IOError as e:
2481
logger.error("Could not open file %r", pidfilename,
2482
exc_info=e)
1828
2483
1829
try:
1830
uid = pwd.getpwnam("_mandos").pw_uid
1831
gid = pwd.getpwnam("_mandos").pw_gid
1832
except KeyError:
2484
for name in ("_mandos", "mandos", "nobody"):
1833
2485
try:
1834
uid = pwd.getpwnam("mandos").pw_uid
1835
gid = pwd.getpwnam("mandos").pw_gid
2486
uid = pwd.getpwnam(name).pw_uid
2487
gid = pwd.getpwnam(name).pw_gid
2488
break
1836
2489
except KeyError:
1837
try:
1838
uid = pwd.getpwnam("nobody").pw_uid
1839
gid = pwd.getpwnam("nobody").pw_gid
1840
except KeyError:
1841
uid = 65534
1842
gid = 65534
2490
continue
2491
else:
2492
uid = 65534
2493
gid = 65534
1843
2494
try:
1844
2495
os.setgid(gid)
1845
2496
os.setuid(uid)
1846
2497
except OSError as error:
1847
if error[0] != errno.EPERM:
1848
raise error
2498
if error.errno != errno.EPERM:
2499
raise
1849
2500
1850
if not debug and not debuglevel:
1851
syslogger.setLevel(logging.WARNING)
1852
console.setLevel(logging.WARNING)
1853
if debuglevel:
1854
level = getattr(logging, debuglevel.upper())
1855
syslogger.setLevel(level)
1856
console.setLevel(level)
1857
1858
2501
if debug:
1859
2502
# Enable all possible GnuTLS debugging
1860
2503
1870
2513
.gnutls_global_set_log_function(debug_gnutls))
1871
2514
1872
2515
# Redirect stdin so all checkers get /dev/null
1873
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2516
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1874
2517
os.dup2(null, sys.stdin.fileno())
1875
2518
if null > 2:
1876
2519
os.close(null)
1877
else:
1878
# No console logging
1879
logger.removeHandler(console)
1880
2520
1881
2521
# Need to fork before connecting to D-Bus
1882
if not debug:
2522
if not foreground:
1883
2523
# Close all input and output, do double fork, etc.
1884
2524
daemon()
1885
2525
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
1886
2530
global main_loop
1887
2531
# From the Avahi example code
1888
DBusGMainLoop(set_as_default=True )
2532
DBusGMainLoop(set_as_default=True)
1889
2533
main_loop = gobject.MainLoop()
1890
2534
bus = dbus.SystemBus()
1891
2535
# End of Avahi example code
1892
2536
if use_dbus:
1893
2537
try:
1894
bus_name = dbus.service.BusName("se.bsnet.fukt.Mandos",
2538
bus_name = dbus.service.BusName("se.recompile.Mandos",
1895
2539
bus, do_not_queue=True)
2540
old_bus_name = (dbus.service.BusName
2541
("se.bsnet.fukt.Mandos", bus,
2542
do_not_queue=True))
1896
2543
except dbus.exceptions.NameExistsException as e:
1897
logger.error(unicode(e) + ", disabling D-Bus")
2544
logger.error("Disabling D-Bus:", exc_info=e)
1898
2545
use_dbus = False
1899
2546
server_settings["use_dbus"] = False
1900
2547
tcp_server.use_dbus = False
1901
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1902
service = AvahiService(name = server_settings["servicename"],
1903
servicetype = "_mandos._tcp",
1904
protocol = protocol, bus = bus)
1905
if server_settings["interface"]:
1906
service.interface = (if_nametoindex
1907
(str(server_settings["interface"])))
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"])))
1908
2557
1909
2558
global multiprocessing_manager
1910
2559
multiprocessing_manager = multiprocessing.Manager()
1912
2561
client_class = Client
1913
2562
if use_dbus:
1914
2563
client_class = functools.partial(ClientDBus, bus = bus)
1915
def client_config_items(config, section):
1916
special_settings = {
1917
"approved_by_default":
1918
lambda: config.getboolean(section,
1919
"approved_by_default"),
1920
}
1921
for name, value in config.items(section):
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))
1922
2646
try:
1923
yield (name, special_settings[name]())
1924
except KeyError:
1925
yield (name, value)
1926
1927
tcp_server.clients.update(set(
1928
client_class(name = section,
1929
config= dict(client_config_items(
1930
client_config, section)))
1931
for section in client_config.sections()))
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
1932
2672
if not tcp_server.clients:
1933
2673
logger.warning("No clients defined")
1934
1935
if not debug:
1936
try:
1937
with pidfile:
1938
pid = os.getpid()
1939
pidfile.write(str(pid) + "\n".encode("utf-8"))
1940
del pidfile
1941
except IOError:
1942
logger.error("Could not write to file %r with PID %d",
1943
pidfilename, pid)
1944
except NameError:
1945
# "pidfile" was never created
1946
pass
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
1947
2685
del pidfilename
1948
1949
signal.signal(signal.SIGINT, signal.SIG_IGN)
1950
2686
1951
2687
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1952
2688
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1953
2689
1954
2690
if use_dbus:
1955
class MandosDBusService(dbus.service.Object):
2691
@alternate_dbus_interfaces({"se.recompile.Mandos":
2692
"se.bsnet.fukt.Mandos"})
2693
class MandosDBusService(DBusObjectWithProperties):
1956
2694
"""A D-Bus proxy object"""
1957
2695
def __init__(self):
1958
2696
dbus.service.Object.__init__(self, bus, "/")
1959
_interface = "se.bsnet.fukt.Mandos"
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"}
1960
2704
1961
2705
@dbus.service.signal(_interface, signature="o")
1962
2706
def ClientAdded(self, objpath):
1977
2721
def GetAllClients(self):
1978
2722
"D-Bus method"
1979
2723
return dbus.Array(c.dbus_object_path
1980
for c in tcp_server.clients)
2724
for c in
2725
tcp_server.clients.itervalues())
1981
2726
1982
2727
@dbus.service.method(_interface,
1983
2728
out_signature="a{oa{sv}}")
1985
2730
"D-Bus method"
1986
2731
return dbus.Dictionary(
1987
2732
((c.dbus_object_path, c.GetAll(""))
1988
for c in tcp_server.clients),
2733
for c in tcp_server.clients.itervalues()),
1989
2734
signature="oa{sv}")
1990
2735
1991
2736
@dbus.service.method(_interface, in_signature="o")
1992
2737
def RemoveClient(self, object_path):
1993
2738
"D-Bus method"
1994
for c in tcp_server.clients:
2739
for c in tcp_server.clients.itervalues():
1995
2740
if c.dbus_object_path == object_path:
1996
tcp_server.clients.remove(c)
2741
del tcp_server.clients[c.name]
1997
2742
c.remove_from_connection()
1998
2743
# Don't signal anything except ClientRemoved
1999
2744
c.disable(quiet=True)
2008
2753
2009
2754
def cleanup():
2010
2755
"Cleanup function; run on exit"
2011
service.cleanup()
2012
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
2013
2815
while tcp_server.clients:
2014
client = tcp_server.clients.pop()
2816
name, client = tcp_server.clients.popitem()
2015
2817
if use_dbus:
2016
2818
client.remove_from_connection()
2017
client.disable_hook = None
2018
2819
# Don't signal anything except ClientRemoved
2019
2820
client.disable(quiet=True)
2020
2821
if use_dbus:
2021
2822
# Emit D-Bus signal
2022
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
2823
mandos_dbus_service.ClientRemoved(client
2824
.dbus_object_path,
2023
2825
client.name)
2826
client_settings.clear()
2024
2827
2025
2828
atexit.register(cleanup)
2026
2829
2027
for client in tcp_server.clients:
2830
for client in tcp_server.clients.itervalues():
2028
2831
if use_dbus:
2029
2832
# Emit D-Bus signal
2030
2833
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2031
client.enable()
2834
# Need to initiate checking of clients
2835
if client.enabled:
2836
client.init_checker()
2032
2837
2033
2838
tcp_server.enable()
2034
2839
tcp_server.server_activate()
2035
2840
2036
2841
# Find out what port we got
2037
service.port = tcp_server.socket.getsockname()[1]
2842
if zeroconf:
2843
service.port = tcp_server.socket.getsockname()[1]
2038
2844
if use_ipv6:
2039
2845
logger.info("Now listening on address %r, port %d,"
2040
" flowinfo %d, scope_id %d"
2041
% tcp_server.socket.getsockname())
2846
" flowinfo %d, scope_id %d",
2847
*tcp_server.socket.getsockname())
2042
2848
else: # IPv4
2043
logger.info("Now listening on address %r, port %d"
2044
% tcp_server.socket.getsockname())
2849
logger.info("Now listening on address %r, port %d",
2850
*tcp_server.socket.getsockname())
2045
2851
2046
2852
#service.interface = tcp_server.socket.getsockname()[3]
2047
2853
2048
2854
try:
2049
# From the Avahi example code
2050
try:
2051
service.activate()
2052
except dbus.exceptions.DBusException as error:
2053
logger.critical("DBusException: %s", error)
2054
cleanup()
2055
sys.exit(1)
2056
# End of Avahi example code
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
2057
2864
2058
2865
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2059
2866
lambda *args, **kwargs:
2063
2870
logger.debug("Starting main loop")
2064
2871
main_loop.run()
2065
2872
except AvahiError as error:
2066
logger.critical("AvahiError: %s", error)
2873
logger.critical("Avahi Error", exc_info=error)
2067
2874
cleanup()
2068
2875
sys.exit(1)
2069
2876
except KeyboardInterrupt:
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0