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- Committer: Teddy Hogeborn
- Date: 2011-07-16 00:29:19 UTC
- Revision ID: teddy@fukt.bsnet.se-20110716002919-r77yikuiulj42o40
* initramfs-tools-script: Abort if plugin-runner is missing. Removed
workaround for Debian bug #633582; the
workaround required getopt, which can not be
guaranteed.
* plugin-runner.c (main): Work around Debian bug #633582.
* plugins.d/mandos-client.c (main): - '' -
workaround for Debian bug #633582; the
workaround required getopt, which can not be
guaranteed.
* plugin-runner.c (main): Work around Debian bug #633582.
* plugins.d/mandos-client.c (main): - '' -
- files removed:
- debian/mandos-client.examples
- network-hooks.d
- files modified:
- .bzrignore
added
removed
mandos
11
11
# "AvahiService" class, and some lines in "main".
12
12
#
13
13
# Everything else is
14
# Copyright © 2008-2014 Teddy Hogeborn
15
# Copyright © 2008-2014 Björn Påhlsson
14
# Copyright © 2008-2011 Teddy Hogeborn
15
# Copyright © 2008-2011 Björn Påhlsson
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16
#
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# This program is free software: you can redistribute it and/or modify
18
18
# it under the terms of the GNU General Public License as published by
28
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# along with this program. If not, see
29
29
# <http://www.gnu.org/licenses/>.
30
30
#
31
# Contact the authors at <mandos@recompile.se>.
31
# Contact the authors at <mandos@fukt.bsnet.se>.
32
32
#
33
33
34
34
from __future__ import (division, absolute_import, print_function,
35
35
unicode_literals)
36
36
37
from future_builtins import *
38
39
37
import SocketServer as socketserver
40
38
import socket
41
39
import argparse
64
62
import functools
65
63
import cPickle as pickle
66
64
import multiprocessing
67
import types
68
import binascii
69
import tempfile
70
import itertools
71
import collections
72
65
73
66
import dbus
74
67
import dbus.service
88
81
except ImportError:
89
82
SO_BINDTODEVICE = None
90
83
91
version = "1.6.4"
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
syslogger = (logging.handlers.SysLogHandler
118
(facility =
119
logging.handlers.SysLogHandler.LOG_DAEMON,
120
address = str("/dev/log")))
121
syslogger.setFormatter(logging.Formatter
122
('Mandos [%(process)d]: %(levelname)s:'
123
' %(message)s'))
124
logger.addHandler(syslogger)
125
126
if debug:
127
console = logging.StreamHandler()
128
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
129
' [%(process)d]:'
130
' %(levelname)s:'
131
' %(message)s'))
132
logger.addHandler(console)
133
logger.setLevel(level)
134
135
136
class PGPError(Exception):
137
"""Exception if encryption/decryption fails"""
138
pass
139
140
141
class PGPEngine(object):
142
"""A simple class for OpenPGP symmetric encryption & decryption"""
143
def __init__(self):
144
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
145
self.gnupgargs = ['--batch',
146
'--home', self.tempdir,
147
'--force-mdc',
148
'--quiet',
149
'--no-use-agent']
150
151
def __enter__(self):
152
return self
153
154
def __exit__(self, exc_type, exc_value, traceback):
155
self._cleanup()
156
return False
157
158
def __del__(self):
159
self._cleanup()
160
161
def _cleanup(self):
162
if self.tempdir is not None:
163
# Delete contents of tempdir
164
for root, dirs, files in os.walk(self.tempdir,
165
topdown = False):
166
for filename in files:
167
os.remove(os.path.join(root, filename))
168
for dirname in dirs:
169
os.rmdir(os.path.join(root, dirname))
170
# Remove tempdir
171
os.rmdir(self.tempdir)
172
self.tempdir = None
173
174
def password_encode(self, password):
175
# Passphrase can not be empty and can not contain newlines or
176
# NUL bytes. So we prefix it and hex encode it.
177
encoded = b"mandos" + binascii.hexlify(password)
178
if len(encoded) > 2048:
179
# GnuPG can't handle long passwords, so encode differently
180
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
181
.replace(b"\n", b"\\n")
182
.replace(b"\0", b"\\x00"))
183
return encoded
184
185
def encrypt(self, data, password):
186
passphrase = self.password_encode(password)
187
with tempfile.NamedTemporaryFile(dir=self.tempdir
188
) as passfile:
189
passfile.write(passphrase)
190
passfile.flush()
191
proc = subprocess.Popen(['gpg', '--symmetric',
192
'--passphrase-file',
193
passfile.name]
194
+ self.gnupgargs,
195
stdin = subprocess.PIPE,
196
stdout = subprocess.PIPE,
197
stderr = subprocess.PIPE)
198
ciphertext, err = proc.communicate(input = data)
199
if proc.returncode != 0:
200
raise PGPError(err)
201
return ciphertext
202
203
def decrypt(self, data, password):
204
passphrase = self.password_encode(password)
205
with tempfile.NamedTemporaryFile(dir = self.tempdir
206
) as passfile:
207
passfile.write(passphrase)
208
passfile.flush()
209
proc = subprocess.Popen(['gpg', '--decrypt',
210
'--passphrase-file',
211
passfile.name]
212
+ self.gnupgargs,
213
stdin = subprocess.PIPE,
214
stdout = subprocess.PIPE,
215
stderr = subprocess.PIPE)
216
decrypted_plaintext, err = proc.communicate(input
217
= data)
218
if proc.returncode != 0:
219
raise PGPError(err)
220
return decrypted_plaintext
221
84
85
version = "1.3.0"
86
87
#logger = logging.getLogger('mandos')
88
logger = logging.Logger('mandos')
89
syslogger = (logging.handlers.SysLogHandler
90
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
91
address = str("/dev/log")))
92
syslogger.setFormatter(logging.Formatter
93
('Mandos [%(process)d]: %(levelname)s:'
94
' %(message)s'))
95
logger.addHandler(syslogger)
96
97
console = logging.StreamHandler()
98
console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'
99
' %(levelname)s:'
100
' %(message)s'))
101
logger.addHandler(console)
222
102
223
103
class AvahiError(Exception):
224
104
def __init__(self, value, *args, **kwargs):
242
122
Used to optionally bind to the specified interface.
243
123
name: string; Example: 'Mandos'
244
124
type: string; Example: '_mandos._tcp'.
245
See <https://www.iana.org/assignments/service-names-port-numbers>
125
See <http://www.dns-sd.org/ServiceTypes.html>
246
126
port: integer; what port to announce
247
127
TXT: list of strings; TXT record for the service
248
128
domain: string; Domain to publish on, default to .local if empty.
254
134
server: D-Bus Server
255
135
bus: dbus.SystemBus()
256
136
"""
257
258
137
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
259
138
servicetype = None, port = None, TXT = None,
260
139
domain = "", host = "", max_renames = 32768,
273
152
self.server = None
274
153
self.bus = bus
275
154
self.entry_group_state_changed_match = None
276
277
155
def rename(self):
278
156
"""Derived from the Avahi example code"""
279
157
if self.rename_count >= self.max_renames:
281
159
" after %i retries, exiting.",
282
160
self.rename_count)
283
161
raise AvahiServiceError("Too many renames")
284
self.name = unicode(self.server
285
.GetAlternativeServiceName(self.name))
162
self.name = unicode(self.server.GetAlternativeServiceName(self.name))
286
163
logger.info("Changing Zeroconf service name to %r ...",
287
164
self.name)
165
syslogger.setFormatter(logging.Formatter
166
('Mandos (%s) [%%(process)d]:'
167
' %%(levelname)s: %%(message)s'
168
% self.name))
288
169
self.remove()
289
170
try:
290
171
self.add()
291
172
except dbus.exceptions.DBusException as error:
292
logger.critical("D-Bus Exception", exc_info=error)
173
logger.critical("DBusException: %s", error)
293
174
self.cleanup()
294
175
os._exit(1)
295
176
self.rename_count += 1
296
297
177
def remove(self):
298
178
"""Derived from the Avahi example code"""
299
179
if self.entry_group_state_changed_match is not None:
301
181
self.entry_group_state_changed_match = None
302
182
if self.group is not None:
303
183
self.group.Reset()
304
305
184
def add(self):
306
185
"""Derived from the Avahi example code"""
307
186
self.remove()
312
191
avahi.DBUS_INTERFACE_ENTRY_GROUP)
313
192
self.entry_group_state_changed_match = (
314
193
self.group.connect_to_signal(
315
'StateChanged', self.entry_group_state_changed))
194
'StateChanged', self .entry_group_state_changed))
316
195
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
317
196
self.name, self.type)
318
197
self.group.AddService(
324
203
dbus.UInt16(self.port),
325
204
avahi.string_array_to_txt_array(self.TXT))
326
205
self.group.Commit()
327
328
206
def entry_group_state_changed(self, state, error):
329
207
"""Derived from the Avahi example code"""
330
208
logger.debug("Avahi entry group state change: %i", state)
337
215
elif state == avahi.ENTRY_GROUP_FAILURE:
338
216
logger.critical("Avahi: Error in group state changed %s",
339
217
unicode(error))
340
raise AvahiGroupError("State changed: {0!s}"
341
.format(error))
342
218
raise AvahiGroupError("State changed: %s"
219
% unicode(error))
343
220
def cleanup(self):
344
221
"""Derived from the Avahi example code"""
345
222
if self.group is not None:
346
223
try:
347
224
self.group.Free()
348
225
except (dbus.exceptions.UnknownMethodException,
349
dbus.exceptions.DBusException):
226
dbus.exceptions.DBusException) as e:
350
227
pass
351
228
self.group = None
352
229
self.remove()
353
354
230
def server_state_changed(self, state, error=None):
355
231
"""Derived from the Avahi example code"""
356
232
logger.debug("Avahi server state change: %i", state)
375
251
logger.debug("Unknown state: %r", state)
376
252
else:
377
253
logger.debug("Unknown state: %r: %r", state, error)
378
379
254
def activate(self):
380
255
"""Derived from the Avahi example code"""
381
256
if self.server is None:
389
264
self.server_state_changed(self.server.GetState())
390
265
391
266
392
class AvahiServiceToSyslog(AvahiService):
393
def rename(self):
394
"""Add the new name to the syslog messages"""
395
ret = AvahiService.rename(self)
396
syslogger.setFormatter(logging.Formatter
397
('Mandos ({0}) [%(process)d]:'
398
' %(levelname)s: %(message)s'
399
.format(self.name)))
400
return ret
401
402
403
def timedelta_to_milliseconds(td):
404
"Convert a datetime.timedelta() to milliseconds"
405
return ((td.days * 24 * 60 * 60 * 1000)
406
+ (td.seconds * 1000)
407
+ (td.microseconds // 1000))
408
409
410
267
class Client(object):
411
268
"""A representation of a client host served by this server.
412
269
413
270
Attributes:
414
approved: bool(); 'None' if not yet approved/disapproved
271
_approved: bool(); 'None' if not yet approved/disapproved
415
272
approval_delay: datetime.timedelta(); Time to wait for approval
416
273
approval_duration: datetime.timedelta(); Duration of one approval
417
274
checker: subprocess.Popen(); a running checker process used
424
281
instance %(name)s can be used in the command.
425
282
checker_initiator_tag: a gobject event source tag, or None
426
283
created: datetime.datetime(); (UTC) object creation
427
client_structure: Object describing what attributes a client has
428
and is used for storing the client at exit
429
284
current_checker_command: string; current running checker_command
285
disable_hook: If set, called by disable() as disable_hook(self)
430
286
disable_initiator_tag: a gobject event source tag, or None
431
287
enabled: bool()
432
288
fingerprint: string (40 or 32 hexadecimal digits); used to
435
291
interval: datetime.timedelta(); How often to start a new checker
436
292
last_approval_request: datetime.datetime(); (UTC) or None
437
293
last_checked_ok: datetime.datetime(); (UTC) or None
438
last_checker_status: integer between 0 and 255 reflecting exit
439
status of last checker. -1 reflects crashed
440
checker, -2 means no checker completed yet.
441
last_enabled: datetime.datetime(); (UTC) or None
294
last_enabled: datetime.datetime(); (UTC)
442
295
name: string; from the config file, used in log messages and
443
296
D-Bus identifiers
444
297
secret: bytestring; sent verbatim (over TLS) to client
445
298
timeout: datetime.timedelta(); How long from last_checked_ok
446
299
until this client is disabled
447
extended_timeout: extra long timeout when secret has been sent
448
300
runtime_expansions: Allowed attributes for runtime expansion.
449
expires: datetime.datetime(); time (UTC) when a client will be
450
disabled, or None
451
server_settings: The server_settings dict from main()
452
301
"""
453
302
454
303
runtime_expansions = ("approval_delay", "approval_duration",
455
"created", "enabled", "expires",
456
"fingerprint", "host", "interval",
457
"last_approval_request", "last_checked_ok",
304
"created", "enabled", "fingerprint",
305
"host", "interval", "last_checked_ok",
458
306
"last_enabled", "name", "timeout")
459
client_defaults = { "timeout": "PT5M",
460
"extended_timeout": "PT15M",
461
"interval": "PT2M",
462
"checker": "fping -q -- %%(host)s",
463
"host": "",
464
"approval_delay": "PT0S",
465
"approval_duration": "PT1S",
466
"approved_by_default": "True",
467
"enabled": "True",
468
}
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))
469
314
470
315
def timeout_milliseconds(self):
471
316
"Return the 'timeout' attribute in milliseconds"
472
return timedelta_to_milliseconds(self.timeout)
473
474
def extended_timeout_milliseconds(self):
475
"Return the 'extended_timeout' attribute in milliseconds"
476
return timedelta_to_milliseconds(self.extended_timeout)
317
return self._timedelta_to_milliseconds(self.timeout)
477
318
478
319
def interval_milliseconds(self):
479
320
"Return the 'interval' attribute in milliseconds"
480
return timedelta_to_milliseconds(self.interval)
481
321
return self._timedelta_to_milliseconds(self.interval)
322
482
323
def approval_delay_milliseconds(self):
483
return timedelta_to_milliseconds(self.approval_delay)
484
485
@staticmethod
486
def config_parser(config):
487
"""Construct a new dict of client settings of this form:
488
{ client_name: {setting_name: value, ...}, ...}
489
with exceptions for any special settings as defined above.
490
NOTE: Must be a pure function. Must return the same result
491
value given the same arguments.
492
"""
493
settings = {}
494
for client_name in config.sections():
495
section = dict(config.items(client_name))
496
client = settings[client_name] = {}
497
498
client["host"] = section["host"]
499
# Reformat values from string types to Python types
500
client["approved_by_default"] = config.getboolean(
501
client_name, "approved_by_default")
502
client["enabled"] = config.getboolean(client_name,
503
"enabled")
504
505
client["fingerprint"] = (section["fingerprint"].upper()
506
.replace(" ", ""))
507
if "secret" in section:
508
client["secret"] = section["secret"].decode("base64")
509
elif "secfile" in section:
510
with open(os.path.expanduser(os.path.expandvars
511
(section["secfile"])),
512
"rb") as secfile:
513
client["secret"] = secfile.read()
514
else:
515
raise TypeError("No secret or secfile for section {0}"
516
.format(section))
517
client["timeout"] = string_to_delta(section["timeout"])
518
client["extended_timeout"] = string_to_delta(
519
section["extended_timeout"])
520
client["interval"] = string_to_delta(section["interval"])
521
client["approval_delay"] = string_to_delta(
522
section["approval_delay"])
523
client["approval_duration"] = string_to_delta(
524
section["approval_duration"])
525
client["checker_command"] = section["checker"]
526
client["last_approval_request"] = None
527
client["last_checked_ok"] = None
528
client["last_checker_status"] = -2
529
530
return settings
531
532
def __init__(self, settings, name = None, server_settings=None):
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."""
533
330
self.name = name
534
if server_settings is None:
535
server_settings = {}
536
self.server_settings = server_settings
537
# adding all client settings
538
for setting, value in settings.iteritems():
539
setattr(self, setting, value)
540
541
if self.enabled:
542
if not hasattr(self, "last_enabled"):
543
self.last_enabled = datetime.datetime.utcnow()
544
if not hasattr(self, "expires"):
545
self.expires = (datetime.datetime.utcnow()
546
+ self.timeout)
547
else:
548
self.last_enabled = None
549
self.expires = None
550
331
if config is None:
332
config = {}
551
333
logger.debug("Creating client %r", self.name)
552
334
# Uppercase and remove spaces from fingerprint for later
553
335
# comparison purposes with return value from the fingerprint()
554
336
# function
337
self.fingerprint = (config["fingerprint"].upper()
338
.replace(" ", ""))
555
339
logger.debug(" Fingerprint: %s", self.fingerprint)
556
self.created = settings.get("created",
557
datetime.datetime.utcnow())
558
559
# attributes specific for this server instance
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
560
359
self.checker = None
561
360
self.checker_initiator_tag = None
562
361
self.disable_initiator_tag = None
563
362
self.checker_callback_tag = None
363
self.checker_command = config["checker"]
564
364
self.current_checker_command = None
565
self.approved = None
365
self.last_connect = None
366
self._approved = None
367
self.approved_by_default = config.get("approved_by_default",
368
True)
566
369
self.approvals_pending = 0
567
self.changedstate = (multiprocessing_manager
568
.Condition(multiprocessing_manager
569
.Lock()))
570
self.client_structure = [attr for attr in
571
self.__dict__.iterkeys()
572
if not attr.startswith("_")]
573
self.client_structure.append("client_structure")
574
575
for name, t in inspect.getmembers(type(self),
576
lambda obj:
577
isinstance(obj,
578
property)):
579
if not name.startswith("_"):
580
self.client_structure.append(name)
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())
581
375
582
# Send notice to process children that client state has changed
583
376
def send_changedstate(self):
584
with self.changedstate:
585
self.changedstate.notify_all()
586
377
self.changedstate.acquire()
378
self.changedstate.notify_all()
379
self.changedstate.release()
380
587
381
def enable(self):
588
382
"""Start this client's checker and timeout hooks"""
589
383
if getattr(self, "enabled", False):
590
384
# Already enabled
591
385
return
592
self.expires = datetime.datetime.utcnow() + self.timeout
593
self.enabled = True
386
self.send_changedstate()
594
387
self.last_enabled = datetime.datetime.utcnow()
595
self.init_checker()
596
self.send_changedstate()
597
598
def disable(self, quiet=True):
599
"""Disable this client."""
600
if not getattr(self, "enabled", False):
601
return False
602
if not quiet:
603
logger.info("Disabling client %s", self.name)
604
if getattr(self, "disable_initiator_tag", None) is not None:
605
gobject.source_remove(self.disable_initiator_tag)
606
self.disable_initiator_tag = None
607
self.expires = None
608
if getattr(self, "checker_initiator_tag", None) is not None:
609
gobject.source_remove(self.checker_initiator_tag)
610
self.checker_initiator_tag = None
611
self.stop_checker()
612
self.enabled = False
613
if not quiet:
614
self.send_changedstate()
615
# Do not run this again if called by a gobject.timeout_add
616
return False
617
618
def __del__(self):
619
self.disable()
620
621
def init_checker(self):
622
388
# Schedule a new checker to be started an 'interval' from now,
623
389
# and every interval from then on.
624
if self.checker_initiator_tag is not None:
625
gobject.source_remove(self.checker_initiator_tag)
626
390
self.checker_initiator_tag = (gobject.timeout_add
627
391
(self.interval_milliseconds(),
628
392
self.start_checker))
629
393
# Schedule a disable() when 'timeout' has passed
630
if self.disable_initiator_tag is not None:
631
gobject.source_remove(self.disable_initiator_tag)
632
394
self.disable_initiator_tag = (gobject.timeout_add
633
395
(self.timeout_milliseconds(),
634
396
self.disable))
397
self.enabled = True
635
398
# Also start a new checker *right now*.
636
399
self.start_checker()
637
400
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
638
426
def checker_callback(self, pid, condition, command):
639
427
"""The checker has completed, so take appropriate actions."""
640
428
self.checker_callback_tag = None
641
429
self.checker = None
642
430
if os.WIFEXITED(condition):
643
self.last_checker_status = os.WEXITSTATUS(condition)
644
if self.last_checker_status == 0:
431
exitstatus = os.WEXITSTATUS(condition)
432
if exitstatus == 0:
645
433
logger.info("Checker for %(name)s succeeded",
646
434
vars(self))
647
435
self.checked_ok()
649
437
logger.info("Checker for %(name)s failed",
650
438
vars(self))
651
439
else:
652
self.last_checker_status = -1
653
440
logger.warning("Checker for %(name)s crashed?",
654
441
vars(self))
655
442
656
443
def checked_ok(self):
657
"""Assert that the client has been seen, alive and well."""
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
449
self.last_checked_ok = datetime.datetime.utcnow()
659
self.last_checker_status = 0
660
self.bump_timeout()
661
662
def bump_timeout(self, timeout=None):
663
"""Bump up the timeout for this client."""
664
if timeout is None:
665
timeout = self.timeout
666
if self.disable_initiator_tag is not None:
667
gobject.source_remove(self.disable_initiator_tag)
668
self.disable_initiator_tag = None
669
if getattr(self, "enabled", False):
670
self.disable_initiator_tag = (gobject.timeout_add
671
(timedelta_to_milliseconds
672
(timeout), self.disable))
673
self.expires = datetime.datetime.utcnow() + timeout
450
gobject.source_remove(self.disable_initiator_tag)
451
self.disable_initiator_tag = (gobject.timeout_add
452
(self.timeout_milliseconds(),
453
self.disable))
674
454
675
455
def need_approval(self):
676
456
self.last_approval_request = datetime.datetime.utcnow()
681
461
If a checker already exists, leave it running and do
682
462
nothing."""
683
463
# The reason for not killing a running checker is that if we
684
# did that, and if a checker (for some reason) started running
685
# slowly and taking more than 'interval' time, then the client
686
# would inevitably timeout, since no checker would get a
687
# chance to run to completion. If we instead leave running
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
688
468
# checkers alone, the checker would have to take more time
689
469
# than 'timeout' for the client to be disabled, which is as it
690
470
# should be.
692
472
# If a checker exists, make sure it is not a zombie
693
473
try:
694
474
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
695
except AttributeError:
696
pass
697
except OSError as error:
698
if error.errno != errno.ECHILD:
699
raise
475
except (AttributeError, OSError) as error:
476
if (isinstance(error, OSError)
477
and error.errno != errno.ECHILD):
478
raise error
700
479
else:
701
480
if pid:
702
481
logger.warning("Checker was a zombie")
705
484
self.current_checker_command)
706
485
# Start a new checker if needed
707
486
if self.checker is None:
708
# Escape attributes for the shell
709
escaped_attrs = dict(
710
(attr, re.escape(unicode(getattr(self, attr))))
711
for attr in
712
self.runtime_expansions)
713
487
try:
714
command = self.checker_command % escaped_attrs
715
except TypeError as error:
716
logger.error('Could not format string "%s"',
717
self.checker_command, exc_info=error)
718
return True # Try again later
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
719
506
self.current_checker_command = command
720
507
try:
721
508
logger.info("Starting checker %r for %s",
724
511
# in normal mode, that is already done by daemon(),
725
512
# and in debug mode we don't want to. (Stdin is
726
513
# always replaced by /dev/null.)
727
# The exception is when not debugging but nevertheless
728
# running in the foreground; use the previously
729
# created wnull.
730
popen_args = {}
731
if (not self.server_settings["debug"]
732
and self.server_settings["foreground"]):
733
popen_args.update({"stdout": wnull,
734
"stderr": wnull })
735
514
self.checker = subprocess.Popen(command,
736
515
close_fds=True,
737
shell=True, cwd="/",
738
**popen_args)
739
except OSError as error:
740
logger.error("Failed to start subprocess",
741
exc_info=error)
742
return True
743
self.checker_callback_tag = (gobject.child_watch_add
744
(self.checker.pid,
745
self.checker_callback,
746
data=command))
747
# The checker may have completed before the gobject
748
# watch was added. Check for this.
749
try:
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.
750
523
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)
751
527
except OSError as error:
752
if error.errno == errno.ECHILD:
753
# This should never happen
754
logger.error("Child process vanished",
755
exc_info=error)
756
return True
757
raise
758
if pid:
759
gobject.source_remove(self.checker_callback_tag)
760
self.checker_callback(pid, status, command)
528
logger.error("Failed to start subprocess: %s",
529
error)
761
530
# Re-run this periodically if run by gobject.timeout_add
762
531
return True
763
532
770
539
return
771
540
logger.debug("Stopping checker for %(name)s", vars(self))
772
541
try:
773
self.checker.terminate()
542
os.kill(self.checker.pid, signal.SIGTERM)
774
543
#time.sleep(0.5)
775
544
#if self.checker.poll() is None:
776
# self.checker.kill()
545
# os.kill(self.checker.pid, signal.SIGKILL)
777
546
except OSError as error:
778
547
if error.errno != errno.ESRCH: # No such process
779
548
raise
780
549
self.checker = None
781
550
782
783
551
def dbus_service_property(dbus_interface, signature="v",
784
552
access="readwrite", byte_arrays=False):
785
553
"""Decorators for marking methods of a DBusObjectWithProperties to
796
564
# "Set" method, so we fail early here:
797
565
if byte_arrays and signature != "ay":
798
566
raise ValueError("Byte arrays not supported for non-'ay'"
799
" signature {0!r}".format(signature))
567
" signature %r" % signature)
800
568
def decorator(func):
801
569
func._dbus_is_property = True
802
570
func._dbus_interface = dbus_interface
810
578
return decorator
811
579
812
580
813
def dbus_interface_annotations(dbus_interface):
814
"""Decorator for marking functions returning interface annotations
815
816
Usage:
817
818
@dbus_interface_annotations("org.example.Interface")
819
def _foo(self): # Function name does not matter
820
return {"org.freedesktop.DBus.Deprecated": "true",
821
"org.freedesktop.DBus.Property.EmitsChangedSignal":
822
"false"}
823
"""
824
def decorator(func):
825
func._dbus_is_interface = True
826
func._dbus_interface = dbus_interface
827
func._dbus_name = dbus_interface
828
return func
829
return decorator
830
831
832
def dbus_annotations(annotations):
833
"""Decorator to annotate D-Bus methods, signals or properties
834
Usage:
835
836
@dbus_service_property("org.example.Interface", signature="b",
837
access="r")
838
@dbus_annotations({{"org.freedesktop.DBus.Deprecated": "true",
839
"org.freedesktop.DBus.Property."
840
"EmitsChangedSignal": "false"})
841
def Property_dbus_property(self):
842
return dbus.Boolean(False)
843
"""
844
def decorator(func):
845
func._dbus_annotations = annotations
846
return func
847
return decorator
848
849
850
581
class DBusPropertyException(dbus.exceptions.DBusException):
851
582
"""A base class for D-Bus property-related exceptions
852
583
"""
868
599
869
600
class DBusObjectWithProperties(dbus.service.Object):
870
601
"""A D-Bus object with properties.
871
602
872
603
Classes inheriting from this can use the dbus_service_property
873
604
decorator to expose methods as D-Bus properties. It exposes the
874
605
standard Get(), Set(), and GetAll() methods on the D-Bus.
875
606
"""
876
607
877
608
@staticmethod
878
def _is_dbus_thing(thing):
879
"""Returns a function testing if an attribute is a D-Bus thing
880
881
If called like _is_dbus_thing("method") it returns a function
882
suitable for use as predicate to inspect.getmembers().
883
"""
884
return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),
885
False)
609
def _is_dbus_property(obj):
610
return getattr(obj, "_dbus_is_property", False)
886
611
887
def _get_all_dbus_things(self, thing):
612
def _get_all_dbus_properties(self):
888
613
"""Returns a generator of (name, attribute) pairs
889
614
"""
890
return ((getattr(athing.__get__(self), "_dbus_name",
891
name),
892
athing.__get__(self))
893
for cls in self.__class__.__mro__
894
for name, athing in
895
inspect.getmembers(cls,
896
self._is_dbus_thing(thing)))
615
return ((prop._dbus_name, prop)
616
for name, prop in
617
inspect.getmembers(self, self._is_dbus_property))
897
618
898
619
def _get_dbus_property(self, interface_name, property_name):
899
620
"""Returns a bound method if one exists which is a D-Bus
900
621
property with the specified name and interface.
901
622
"""
902
for cls in self.__class__.__mro__:
903
for name, value in (inspect.getmembers
904
(cls,
905
self._is_dbus_thing("property"))):
906
if (value._dbus_name == property_name
907
and value._dbus_interface == interface_name):
908
return value.__get__(self)
909
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
910
633
# No such property
911
634
raise DBusPropertyNotFound(self.dbus_object_path + ":"
912
635
+ interface_name + "."
936
659
# The byte_arrays option is not supported yet on
937
660
# signatures other than "ay".
938
661
if prop._dbus_signature != "ay":
939
raise ValueError("Byte arrays not supported for non-"
940
"'ay' signature {0!r}"
941
.format(prop._dbus_signature))
942
value = dbus.ByteArray(b''.join(chr(byte)
943
for byte in value))
662
raise ValueError
663
value = dbus.ByteArray(''.join(unichr(byte)
664
for byte in value))
944
665
prop(value)
945
666
946
667
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
948
669
def GetAll(self, interface_name):
949
670
"""Standard D-Bus property GetAll() method, see D-Bus
950
671
standard.
951
672
952
673
Note: Will not include properties with access="write".
953
674
"""
954
properties = {}
955
for name, prop in self._get_all_dbus_things("property"):
675
all = {}
676
for name, prop in self._get_all_dbus_properties():
956
677
if (interface_name
957
678
and interface_name != prop._dbus_interface):
958
679
# Interface non-empty but did not match
962
683
continue
963
684
value = prop()
964
685
if not hasattr(value, "variant_level"):
965
properties[name] = value
686
all[name] = value
966
687
continue
967
properties[name] = type(value)(value, variant_level=
968
value.variant_level+1)
969
return dbus.Dictionary(properties, signature="sv")
688
all[name] = type(value)(value, variant_level=
689
value.variant_level+1)
690
return dbus.Dictionary(all, signature="sv")
970
691
971
692
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
972
693
out_signature="s",
973
694
path_keyword='object_path',
974
695
connection_keyword='connection')
975
696
def Introspect(self, object_path, connection):
976
"""Overloading of standard D-Bus method.
977
978
Inserts property tags and interface annotation tags.
697
"""Standard D-Bus method, overloaded to insert property tags.
979
698
"""
980
699
xmlstring = dbus.service.Object.Introspect(self, object_path,
981
700
connection)
988
707
e.setAttribute("access", prop._dbus_access)
989
708
return e
990
709
for if_tag in document.getElementsByTagName("interface"):
991
# Add property tags
992
710
for tag in (make_tag(document, name, prop)
993
711
for name, prop
994
in self._get_all_dbus_things("property")
712
in self._get_all_dbus_properties()
995
713
if prop._dbus_interface
996
714
== if_tag.getAttribute("name")):
997
715
if_tag.appendChild(tag)
998
# Add annotation tags
999
for typ in ("method", "signal", "property"):
1000
for tag in if_tag.getElementsByTagName(typ):
1001
annots = dict()
1002
for name, prop in (self.
1003
_get_all_dbus_things(typ)):
1004
if (name == tag.getAttribute("name")
1005
and prop._dbus_interface
1006
== if_tag.getAttribute("name")):
1007
annots.update(getattr
1008
(prop,
1009
"_dbus_annotations",
1010
{}))
1011
for name, value in annots.iteritems():
1012
ann_tag = document.createElement(
1013
"annotation")
1014
ann_tag.setAttribute("name", name)
1015
ann_tag.setAttribute("value", value)
1016
tag.appendChild(ann_tag)
1017
# Add interface annotation tags
1018
for annotation, value in dict(
1019
itertools.chain.from_iterable(
1020
annotations().iteritems()
1021
for name, annotations in
1022
self._get_all_dbus_things("interface")
1023
if name == if_tag.getAttribute("name")
1024
)).iteritems():
1025
ann_tag = document.createElement("annotation")
1026
ann_tag.setAttribute("name", annotation)
1027
ann_tag.setAttribute("value", value)
1028
if_tag.appendChild(ann_tag)
1029
716
# Add the names to the return values for the
1030
717
# "org.freedesktop.DBus.Properties" methods
1031
718
if (if_tag.getAttribute("name")
1046
733
except (AttributeError, xml.dom.DOMException,
1047
734
xml.parsers.expat.ExpatError) as error:
1048
735
logger.error("Failed to override Introspection method",
1049
exc_info=error)
736
error)
1050
737
return xmlstring
1051
738
1052
739
1053
def datetime_to_dbus(dt, variant_level=0):
1054
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1055
if dt is None:
1056
return dbus.String("", variant_level = variant_level)
1057
return dbus.String(dt.isoformat(),
1058
variant_level=variant_level)
1059
1060
1061
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1062
"""A class decorator; applied to a subclass of
1063
dbus.service.Object, it will add alternate D-Bus attributes with
1064
interface names according to the "alt_interface_names" mapping.
1065
Usage:
1066
1067
@alternate_dbus_interfaces({"org.example.Interface":
1068
"net.example.AlternateInterface"})
1069
class SampleDBusObject(dbus.service.Object):
1070
@dbus.service.method("org.example.Interface")
1071
def SampleDBusMethod():
1072
pass
1073
1074
The above "SampleDBusMethod" on "SampleDBusObject" will be
1075
reachable via two interfaces: "org.example.Interface" and
1076
"net.example.AlternateInterface", the latter of which will have
1077
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1078
"true", unless "deprecate" is passed with a False value.
1079
1080
This works for methods and signals, and also for D-Bus properties
1081
(from DBusObjectWithProperties) and interfaces (from the
1082
dbus_interface_annotations decorator).
1083
"""
1084
def wrapper(cls):
1085
for orig_interface_name, alt_interface_name in (
1086
alt_interface_names.iteritems()):
1087
attr = {}
1088
interface_names = set()
1089
# Go though all attributes of the class
1090
for attrname, attribute in inspect.getmembers(cls):
1091
# Ignore non-D-Bus attributes, and D-Bus attributes
1092
# with the wrong interface name
1093
if (not hasattr(attribute, "_dbus_interface")
1094
or not attribute._dbus_interface
1095
.startswith(orig_interface_name)):
1096
continue
1097
# Create an alternate D-Bus interface name based on
1098
# the current name
1099
alt_interface = (attribute._dbus_interface
1100
.replace(orig_interface_name,
1101
alt_interface_name))
1102
interface_names.add(alt_interface)
1103
# Is this a D-Bus signal?
1104
if getattr(attribute, "_dbus_is_signal", False):
1105
# Extract the original non-method undecorated
1106
# function by black magic
1107
nonmethod_func = (dict(
1108
zip(attribute.func_code.co_freevars,
1109
attribute.__closure__))["func"]
1110
.cell_contents)
1111
# Create a new, but exactly alike, function
1112
# object, and decorate it to be a new D-Bus signal
1113
# with the alternate D-Bus interface name
1114
new_function = (dbus.service.signal
1115
(alt_interface,
1116
attribute._dbus_signature)
1117
(types.FunctionType(
1118
nonmethod_func.func_code,
1119
nonmethod_func.func_globals,
1120
nonmethod_func.func_name,
1121
nonmethod_func.func_defaults,
1122
nonmethod_func.func_closure)))
1123
# Copy annotations, if any
1124
try:
1125
new_function._dbus_annotations = (
1126
dict(attribute._dbus_annotations))
1127
except AttributeError:
1128
pass
1129
# Define a creator of a function to call both the
1130
# original and alternate functions, so both the
1131
# original and alternate signals gets sent when
1132
# the function is called
1133
def fixscope(func1, func2):
1134
"""This function is a scope container to pass
1135
func1 and func2 to the "call_both" function
1136
outside of its arguments"""
1137
def call_both(*args, **kwargs):
1138
"""This function will emit two D-Bus
1139
signals by calling func1 and func2"""
1140
func1(*args, **kwargs)
1141
func2(*args, **kwargs)
1142
return call_both
1143
# Create the "call_both" function and add it to
1144
# the class
1145
attr[attrname] = fixscope(attribute, new_function)
1146
# Is this a D-Bus method?
1147
elif getattr(attribute, "_dbus_is_method", False):
1148
# Create a new, but exactly alike, function
1149
# object. Decorate it to be a new D-Bus method
1150
# with the alternate D-Bus interface name. Add it
1151
# to the class.
1152
attr[attrname] = (dbus.service.method
1153
(alt_interface,
1154
attribute._dbus_in_signature,
1155
attribute._dbus_out_signature)
1156
(types.FunctionType
1157
(attribute.func_code,
1158
attribute.func_globals,
1159
attribute.func_name,
1160
attribute.func_defaults,
1161
attribute.func_closure)))
1162
# Copy annotations, if any
1163
try:
1164
attr[attrname]._dbus_annotations = (
1165
dict(attribute._dbus_annotations))
1166
except AttributeError:
1167
pass
1168
# Is this a D-Bus property?
1169
elif getattr(attribute, "_dbus_is_property", False):
1170
# Create a new, but exactly alike, function
1171
# object, and decorate it to be a new D-Bus
1172
# property with the alternate D-Bus interface
1173
# name. Add it to the class.
1174
attr[attrname] = (dbus_service_property
1175
(alt_interface,
1176
attribute._dbus_signature,
1177
attribute._dbus_access,
1178
attribute
1179
._dbus_get_args_options
1180
["byte_arrays"])
1181
(types.FunctionType
1182
(attribute.func_code,
1183
attribute.func_globals,
1184
attribute.func_name,
1185
attribute.func_defaults,
1186
attribute.func_closure)))
1187
# Copy annotations, if any
1188
try:
1189
attr[attrname]._dbus_annotations = (
1190
dict(attribute._dbus_annotations))
1191
except AttributeError:
1192
pass
1193
# Is this a D-Bus interface?
1194
elif getattr(attribute, "_dbus_is_interface", False):
1195
# Create a new, but exactly alike, function
1196
# object. Decorate it to be a new D-Bus interface
1197
# with the alternate D-Bus interface name. Add it
1198
# to the class.
1199
attr[attrname] = (dbus_interface_annotations
1200
(alt_interface)
1201
(types.FunctionType
1202
(attribute.func_code,
1203
attribute.func_globals,
1204
attribute.func_name,
1205
attribute.func_defaults,
1206
attribute.func_closure)))
1207
if deprecate:
1208
# Deprecate all alternate interfaces
1209
iname="_AlternateDBusNames_interface_annotation{0}"
1210
for interface_name in interface_names:
1211
@dbus_interface_annotations(interface_name)
1212
def func(self):
1213
return { "org.freedesktop.DBus.Deprecated":
1214
"true" }
1215
# Find an unused name
1216
for aname in (iname.format(i)
1217
for i in itertools.count()):
1218
if aname not in attr:
1219
attr[aname] = func
1220
break
1221
if interface_names:
1222
# Replace the class with a new subclass of it with
1223
# methods, signals, etc. as created above.
1224
cls = type(b"{0}Alternate".format(cls.__name__),
1225
(cls,), attr)
1226
return cls
1227
return wrapper
1228
1229
1230
@alternate_dbus_interfaces({"se.recompile.Mandos":
1231
"se.bsnet.fukt.Mandos"})
1232
740
class ClientDBus(Client, DBusObjectWithProperties):
1233
741
"""A Client class using D-Bus
1234
742
1243
751
# dbus.service.Object doesn't use super(), so we can't either.
1244
752
1245
753
def __init__(self, bus = None, *args, **kwargs):
754
self._approvals_pending = 0
1246
755
self.bus = bus
1247
756
Client.__init__(self, *args, **kwargs)
1248
757
# Only now, when this client is initialized, can it show up on
1254
763
("/clients/" + client_object_name))
1255
764
DBusObjectWithProperties.__init__(self, self.bus,
1256
765
self.dbus_object_path)
1257
1258
def notifychangeproperty(transform_func,
1259
dbus_name, type_func=lambda x: x,
1260
variant_level=1):
1261
""" Modify a variable so that it's a property which announces
1262
its changes to DBus.
1263
1264
transform_fun: Function that takes a value and a variant_level
1265
and transforms it to a D-Bus type.
1266
dbus_name: D-Bus name of the variable
1267
type_func: Function that transform the value before sending it
1268
to the D-Bus. Default: no transform
1269
variant_level: D-Bus variant level. Default: 1
1270
"""
1271
attrname = "_{0}".format(dbus_name)
1272
def setter(self, value):
1273
if hasattr(self, "dbus_object_path"):
1274
if (not hasattr(self, attrname) or
1275
type_func(getattr(self, attrname, None))
1276
!= type_func(value)):
1277
dbus_value = transform_func(type_func(value),
1278
variant_level
1279
=variant_level)
1280
self.PropertyChanged(dbus.String(dbus_name),
1281
dbus_value)
1282
setattr(self, attrname, value)
1283
1284
return property(lambda self: getattr(self, attrname), setter)
1285
1286
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1287
approvals_pending = notifychangeproperty(dbus.Boolean,
1288
"ApprovalPending",
1289
type_func = bool)
1290
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1291
last_enabled = notifychangeproperty(datetime_to_dbus,
1292
"LastEnabled")
1293
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1294
type_func = lambda checker:
1295
checker is not None)
1296
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1297
"LastCheckedOK")
1298
last_checker_status = notifychangeproperty(dbus.Int16,
1299
"LastCheckerStatus")
1300
last_approval_request = notifychangeproperty(
1301
datetime_to_dbus, "LastApprovalRequest")
1302
approved_by_default = notifychangeproperty(dbus.Boolean,
1303
"ApprovedByDefault")
1304
approval_delay = notifychangeproperty(dbus.UInt64,
1305
"ApprovalDelay",
1306
type_func =
1307
timedelta_to_milliseconds)
1308
approval_duration = notifychangeproperty(
1309
dbus.UInt64, "ApprovalDuration",
1310
type_func = timedelta_to_milliseconds)
1311
host = notifychangeproperty(dbus.String, "Host")
1312
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1313
type_func =
1314
timedelta_to_milliseconds)
1315
extended_timeout = notifychangeproperty(
1316
dbus.UInt64, "ExtendedTimeout",
1317
type_func = timedelta_to_milliseconds)
1318
interval = notifychangeproperty(dbus.UInt64,
1319
"Interval",
1320
type_func =
1321
timedelta_to_milliseconds)
1322
checker_command = notifychangeproperty(dbus.String, "Checker")
1323
1324
del notifychangeproperty
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
1325
810
1326
811
def __del__(self, *args, **kwargs):
1327
812
try:
1336
821
*args, **kwargs):
1337
822
self.checker_callback_tag = None
1338
823
self.checker = None
824
# Emit D-Bus signal
825
self.PropertyChanged(dbus.String("CheckerRunning"),
826
dbus.Boolean(False, variant_level=1))
1339
827
if os.WIFEXITED(condition):
1340
828
exitstatus = os.WEXITSTATUS(condition)
1341
829
# Emit D-Bus signal
1351
839
return Client.checker_callback(self, pid, condition, command,
1352
840
*args, **kwargs)
1353
841
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
1354
859
def start_checker(self, *args, **kwargs):
1355
860
old_checker = self.checker
1356
861
if self.checker is not None:
1363
868
and old_checker_pid != self.checker.pid):
1364
869
# Emit D-Bus signal
1365
870
self.CheckerStarted(self.current_checker_command)
871
self.PropertyChanged(
872
dbus.String("CheckerRunning"),
873
dbus.Boolean(True, variant_level=1))
1366
874
return r
1367
875
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
1368
885
def _reset_approved(self):
1369
self.approved = None
886
self._approved = None
1370
887
return False
1371
888
1372
889
def approve(self, value=True):
1373
self.approved = value
1374
gobject.timeout_add(timedelta_to_milliseconds
890
self.send_changedstate()
891
self._approved = value
892
gobject.timeout_add(self._timedelta_to_milliseconds
1375
893
(self.approval_duration),
1376
894
self._reset_approved)
1377
self.send_changedstate()
895
1378
896
1379
897
## D-Bus methods, signals & properties
1380
_interface = "se.recompile.Mandos.Client"
1381
1382
## Interfaces
1383
1384
@dbus_interface_annotations(_interface)
1385
def _foo(self):
1386
return { "org.freedesktop.DBus.Property.EmitsChangedSignal":
1387
"false"}
898
_interface = "se.bsnet.fukt.Mandos.Client"
1388
899
1389
900
## Signals
1390
901
1476
987
if value is None: # get
1477
988
return dbus.Boolean(self.approved_by_default)
1478
989
self.approved_by_default = bool(value)
990
# Emit D-Bus signal
991
self.PropertyChanged(dbus.String("ApprovedByDefault"),
992
dbus.Boolean(value, variant_level=1))
1479
993
1480
994
# ApprovalDelay - property
1481
995
@dbus_service_property(_interface, signature="t",
1484
998
if value is None: # get
1485
999
return dbus.UInt64(self.approval_delay_milliseconds())
1486
1000
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))
1487
1004
1488
1005
# ApprovalDuration - property
1489
1006
@dbus_service_property(_interface, signature="t",
1490
1007
access="readwrite")
1491
1008
def ApprovalDuration_dbus_property(self, value=None):
1492
1009
if value is None: # get
1493
return dbus.UInt64(timedelta_to_milliseconds(
1010
return dbus.UInt64(self._timedelta_to_milliseconds(
1494
1011
self.approval_duration))
1495
1012
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))
1496
1016
1497
1017
# Name - property
1498
1018
@dbus_service_property(_interface, signature="s", access="read")
1510
1030
def Host_dbus_property(self, value=None):
1511
1031
if value is None: # get
1512
1032
return dbus.String(self.host)
1513
self.host = unicode(value)
1033
self.host = value
1034
# Emit D-Bus signal
1035
self.PropertyChanged(dbus.String("Host"),
1036
dbus.String(value, variant_level=1))
1514
1037
1515
1038
# Created - property
1516
1039
@dbus_service_property(_interface, signature="s", access="read")
1517
1040
def Created_dbus_property(self):
1518
return datetime_to_dbus(self.created)
1041
return dbus.String(self._datetime_to_dbus(self.created))
1519
1042
1520
1043
# LastEnabled - property
1521
1044
@dbus_service_property(_interface, signature="s", access="read")
1522
1045
def LastEnabled_dbus_property(self):
1523
return datetime_to_dbus(self.last_enabled)
1046
if self.last_enabled is None:
1047
return dbus.String("")
1048
return dbus.String(self._datetime_to_dbus(self.last_enabled))
1524
1049
1525
1050
# Enabled - property
1526
1051
@dbus_service_property(_interface, signature="b",
1540
1065
if value is not None:
1541
1066
self.checked_ok()
1542
1067
return
1543
return datetime_to_dbus(self.last_checked_ok)
1544
1545
# LastCheckerStatus - property
1546
@dbus_service_property(_interface, signature="n",
1547
access="read")
1548
def LastCheckerStatus_dbus_property(self):
1549
return dbus.Int16(self.last_checker_status)
1550
1551
# Expires - property
1552
@dbus_service_property(_interface, signature="s", access="read")
1553
def Expires_dbus_property(self):
1554
return datetime_to_dbus(self.expires)
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))
1555
1072
1556
1073
# LastApprovalRequest - property
1557
1074
@dbus_service_property(_interface, signature="s", access="read")
1558
1075
def LastApprovalRequest_dbus_property(self):
1559
return datetime_to_dbus(self.last_approval_request)
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))
1560
1081
1561
1082
# Timeout - property
1562
1083
@dbus_service_property(_interface, signature="t",
1564
1085
def Timeout_dbus_property(self, value=None):
1565
1086
if value is None: # get
1566
1087
return dbus.UInt64(self.timeout_milliseconds())
1567
old_timeout = self.timeout
1568
1088
self.timeout = datetime.timedelta(0, 0, 0, value)
1569
# Reschedule disabling
1570
if self.enabled:
1571
now = datetime.datetime.utcnow()
1572
self.expires += self.timeout - old_timeout
1573
if self.expires <= now:
1574
# The timeout has passed
1575
self.disable()
1576
else:
1577
if (getattr(self, "disable_initiator_tag", None)
1578
is None):
1579
return
1580
gobject.source_remove(self.disable_initiator_tag)
1581
self.disable_initiator_tag = (
1582
gobject.timeout_add(
1583
timedelta_to_milliseconds(self.expires - now),
1584
self.disable))
1585
1586
# ExtendedTimeout - property
1587
@dbus_service_property(_interface, signature="t",
1588
access="readwrite")
1589
def ExtendedTimeout_dbus_property(self, value=None):
1590
if value is None: # get
1591
return dbus.UInt64(self.extended_timeout_milliseconds())
1592
self.extended_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))
1593
1109
1594
1110
# Interval - property
1595
1111
@dbus_service_property(_interface, signature="t",
1598
1114
if value is None: # get
1599
1115
return dbus.UInt64(self.interval_milliseconds())
1600
1116
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))
1601
1120
if getattr(self, "checker_initiator_tag", None) is None:
1602
1121
return
1603
if self.enabled:
1604
# Reschedule checker run
1605
gobject.source_remove(self.checker_initiator_tag)
1606
self.checker_initiator_tag = (gobject.timeout_add
1607
(value, self.start_checker))
1608
self.start_checker() # Start one now, too
1609
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
1610
1128
# Checker - property
1611
1129
@dbus_service_property(_interface, signature="s",
1612
1130
access="readwrite")
1613
1131
def Checker_dbus_property(self, value=None):
1614
1132
if value is None: # get
1615
1133
return dbus.String(self.checker_command)
1616
self.checker_command = unicode(value)
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))
1617
1139
1618
1140
# CheckerRunning - property
1619
1141
@dbus_service_property(_interface, signature="b",
1646
1168
self._pipe.send(('init', fpr, address))
1647
1169
if not self._pipe.recv():
1648
1170
raise KeyError()
1649
1171
1650
1172
def __getattribute__(self, name):
1651
if name == '_pipe':
1173
if(name == '_pipe'):
1652
1174
return super(ProxyClient, self).__getattribute__(name)
1653
1175
self._pipe.send(('getattr', name))
1654
1176
data = self._pipe.recv()
1659
1181
self._pipe.send(('funcall', name, args, kwargs))
1660
1182
return self._pipe.recv()[1]
1661
1183
return func
1662
1184
1663
1185
def __setattr__(self, name, value):
1664
if name == '_pipe':
1186
if(name == '_pipe'):
1665
1187
return super(ProxyClient, self).__setattr__(name, value)
1666
1188
self._pipe.send(('setattr', name, value))
1667
1189
1678
1200
unicode(self.client_address))
1679
1201
logger.debug("Pipe FD: %d",
1680
1202
self.server.child_pipe.fileno())
1681
1203
1682
1204
session = (gnutls.connection
1683
1205
.ClientSession(self.request,
1684
1206
gnutls.connection
1685
1207
.X509Credentials()))
1686
1208
1687
1209
# Note: gnutls.connection.X509Credentials is really a
1688
1210
# generic GnuTLS certificate credentials object so long as
1689
1211
# no X.509 keys are added to it. Therefore, we can use it
1690
1212
# here despite using OpenPGP certificates.
1691
1213
1692
1214
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1693
1215
# "+AES-256-CBC", "+SHA1",
1694
1216
# "+COMP-NULL", "+CTYPE-OPENPGP",
1700
1222
(gnutls.library.functions
1701
1223
.gnutls_priority_set_direct(session._c_object,
1702
1224
priority, None))
1703
1225
1704
1226
# Start communication using the Mandos protocol
1705
1227
# Get protocol number
1706
1228
line = self.request.makefile().readline()
1707
1229
logger.debug("Protocol version: %r", line)
1708
1230
try:
1709
1231
if int(line.strip().split()[0]) > 1:
1710
raise RuntimeError(line)
1232
raise RuntimeError
1711
1233
except (ValueError, IndexError, RuntimeError) as error:
1712
1234
logger.error("Unknown protocol version: %s", error)
1713
1235
return
1714
1236
1715
1237
# Start GnuTLS connection
1716
1238
try:
1717
1239
session.handshake()
1721
1243
# established. Just abandon the request.
1722
1244
return
1723
1245
logger.debug("Handshake succeeded")
1724
1246
1725
1247
approval_required = False
1726
1248
try:
1727
1249
try:
1732
1254
logger.warning("Bad certificate: %s", error)
1733
1255
return
1734
1256
logger.debug("Fingerprint: %s", fpr)
1735
1257
1736
1258
try:
1737
1259
client = ProxyClient(child_pipe, fpr,
1738
1260
self.client_address)
1750
1272
client.name)
1751
1273
if self.server.use_dbus:
1752
1274
# Emit D-Bus signal
1753
client.Rejected("Disabled")
1275
client.Rejected("Disabled")
1754
1276
return
1755
1277
1756
if client.approved or not client.approval_delay:
1278
if client._approved or not client.approval_delay:
1757
1279
#We are approved or approval is disabled
1758
1280
break
1759
elif client.approved is None:
1281
elif client._approved is None:
1760
1282
logger.info("Client %s needs approval",
1761
1283
client.name)
1762
1284
if self.server.use_dbus:
1773
1295
return
1774
1296
1775
1297
#wait until timeout or approved
1298
#x = float(client._timedelta_to_milliseconds(delay))
1776
1299
time = datetime.datetime.now()
1777
1300
client.changedstate.acquire()
1778
client.changedstate.wait(
1779
float(timedelta_to_milliseconds(delay)
1780
/ 1000))
1301
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
1781
1302
client.changedstate.release()
1782
1303
time2 = datetime.datetime.now()
1783
1304
if (time2 - time) >= delay:
1799
1320
try:
1800
1321
sent = session.send(client.secret[sent_size:])
1801
1322
except gnutls.errors.GNUTLSError as error:
1802
logger.warning("gnutls send failed",
1803
exc_info=error)
1323
logger.warning("gnutls send failed")
1804
1324
return
1805
1325
logger.debug("Sent: %d, remaining: %d",
1806
1326
sent, len(client.secret)
1807
1327
- (sent_size + sent))
1808
1328
sent_size += sent
1809
1329
1810
1330
logger.info("Sending secret to %s", client.name)
1811
# bump the timeout using extended_timeout
1812
client.bump_timeout(client.extended_timeout)
1331
# bump the timeout as if seen
1332
client.checked_ok()
1813
1333
if self.server.use_dbus:
1814
1334
# Emit D-Bus signal
1815
1335
client.GotSecret()
1820
1340
try:
1821
1341
session.bye()
1822
1342
except gnutls.errors.GNUTLSError as error:
1823
logger.warning("GnuTLS bye failed",
1824
exc_info=error)
1343
logger.warning("GnuTLS bye failed")
1825
1344
1826
1345
@staticmethod
1827
1346
def peer_certificate(session):
1883
1402
# Convert the buffer to a Python bytestring
1884
1403
fpr = ctypes.string_at(buf, buf_len.value)
1885
1404
# Convert the bytestring to hexadecimal notation
1886
hex_fpr = binascii.hexlify(fpr).upper()
1405
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
1887
1406
return hex_fpr
1888
1407
1889
1408
1892
1411
def sub_process_main(self, request, address):
1893
1412
try:
1894
1413
self.finish_request(request, address)
1895
except Exception:
1414
except:
1896
1415
self.handle_error(request, address)
1897
1416
self.close_request(request)
1898
1417
1899
1418
def process_request(self, request, address):
1900
1419
"""Start a new process to process the request."""
1901
proc = multiprocessing.Process(target = self.sub_process_main,
1902
args = (request, address))
1903
proc.start()
1904
return proc
1905
1420
multiprocessing.Process(target = self.sub_process_main,
1421
args = (request, address)).start()
1906
1422
1907
1423
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1908
1424
""" adds a pipe to the MixIn """
1912
1428
This function creates a new pipe in self.pipe
1913
1429
"""
1914
1430
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1915
1916
proc = MultiprocessingMixIn.process_request(self, request,
1917
client_address)
1431
1432
super(MultiprocessingMixInWithPipe,
1433
self).process_request(request, client_address)
1918
1434
self.child_pipe.close()
1919
self.add_pipe(parent_pipe, proc)
1920
1921
def add_pipe(self, parent_pipe, proc):
1435
self.add_pipe(parent_pipe)
1436
1437
def add_pipe(self, parent_pipe):
1922
1438
"""Dummy function; override as necessary"""
1923
raise NotImplementedError()
1924
1439
raise NotImplementedError
1925
1440
1926
1441
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1927
1442
socketserver.TCPServer, object):
1933
1448
use_ipv6: Boolean; to use IPv6 or not
1934
1449
"""
1935
1450
def __init__(self, server_address, RequestHandlerClass,
1936
interface=None, use_ipv6=True, socketfd=None):
1937
"""If socketfd is set, use that file descriptor instead of
1938
creating a new one with socket.socket().
1939
"""
1451
interface=None, use_ipv6=True):
1940
1452
self.interface = interface
1941
1453
if use_ipv6:
1942
1454
self.address_family = socket.AF_INET6
1943
if socketfd is not None:
1944
# Save the file descriptor
1945
self.socketfd = socketfd
1946
# Save the original socket.socket() function
1947
self.socket_socket = socket.socket
1948
# To implement --socket, we monkey patch socket.socket.
1949
#
1950
# (When socketserver.TCPServer is a new-style class, we
1951
# could make self.socket into a property instead of monkey
1952
# patching socket.socket.)
1953
#
1954
# Create a one-time-only replacement for socket.socket()
1955
@functools.wraps(socket.socket)
1956
def socket_wrapper(*args, **kwargs):
1957
# Restore original function so subsequent calls are
1958
# not affected.
1959
socket.socket = self.socket_socket
1960
del self.socket_socket
1961
# This time only, return a new socket object from the
1962
# saved file descriptor.
1963
return socket.fromfd(self.socketfd, *args, **kwargs)
1964
# Replace socket.socket() function with wrapper
1965
socket.socket = socket_wrapper
1966
# The socketserver.TCPServer.__init__ will call
1967
# socket.socket(), which might be our replacement,
1968
# socket_wrapper(), if socketfd was set.
1969
1455
socketserver.TCPServer.__init__(self, server_address,
1970
1456
RequestHandlerClass)
1971
1972
1457
def server_bind(self):
1973
1458
"""This overrides the normal server_bind() function
1974
1459
to bind to an interface if one was specified, and also NOT to
1982
1467
try:
1983
1468
self.socket.setsockopt(socket.SOL_SOCKET,
1984
1469
SO_BINDTODEVICE,
1985
str(self.interface + '\0'))
1470
str(self.interface
1471
+ '\0'))
1986
1472
except socket.error as error:
1987
if error.errno == errno.EPERM:
1988
logger.error("No permission to bind to"
1989
" interface %s", self.interface)
1990
elif error.errno == errno.ENOPROTOOPT:
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:
1991
1478
logger.error("SO_BINDTODEVICE not available;"
1992
1479
" cannot bind to interface %s",
1993
1480
self.interface)
1994
elif error.errno == errno.ENODEV:
1995
logger.error("Interface %s does not exist,"
1996
" cannot bind", self.interface)
1997
1481
else:
1998
1482
raise
1999
1483
# Only bind(2) the socket if we really need to.
2002
1486
if self.address_family == socket.AF_INET6:
2003
1487
any_address = "::" # in6addr_any
2004
1488
else:
2005
any_address = "0.0.0.0" # INADDR_ANY
1489
any_address = socket.INADDR_ANY
2006
1490
self.server_address = (any_address,
2007
1491
self.server_address[1])
2008
1492
elif not self.server_address[1]:
2029
1513
"""
2030
1514
def __init__(self, server_address, RequestHandlerClass,
2031
1515
interface=None, use_ipv6=True, clients=None,
2032
gnutls_priority=None, use_dbus=True, socketfd=None):
1516
gnutls_priority=None, use_dbus=True):
2033
1517
self.enabled = False
2034
1518
self.clients = clients
2035
1519
if self.clients is None:
2036
self.clients = {}
1520
self.clients = set()
2037
1521
self.use_dbus = use_dbus
2038
1522
self.gnutls_priority = gnutls_priority
2039
1523
IPv6_TCPServer.__init__(self, server_address,
2040
1524
RequestHandlerClass,
2041
1525
interface = interface,
2042
use_ipv6 = use_ipv6,
2043
socketfd = socketfd)
1526
use_ipv6 = use_ipv6)
2044
1527
def server_activate(self):
2045
1528
if self.enabled:
2046
1529
return socketserver.TCPServer.server_activate(self)
2047
2048
1530
def enable(self):
2049
1531
self.enabled = True
2050
2051
def add_pipe(self, parent_pipe, proc):
1532
def add_pipe(self, parent_pipe):
2052
1533
# Call "handle_ipc" for both data and EOF events
2053
1534
gobject.io_add_watch(parent_pipe.fileno(),
2054
1535
gobject.IO_IN | gobject.IO_HUP,
2055
1536
functools.partial(self.handle_ipc,
2056
parent_pipe =
2057
parent_pipe,
2058
proc = proc))
2059
1537
parent_pipe = parent_pipe))
1538
2060
1539
def handle_ipc(self, source, condition, parent_pipe=None,
2061
proc = None, client_object=None):
2062
# error, or the other end of multiprocessing.Pipe has closed
2063
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2064
# Wait for other process to exit
2065
proc.join()
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):
2066
1557
return False
2067
1558
2068
1559
# Read a request from the child
2073
1564
fpr = request[1]
2074
1565
address = request[2]
2075
1566
2076
for c in self.clients.itervalues():
1567
for c in self.clients:
2077
1568
if c.fingerprint == fpr:
2078
1569
client = c
2079
1570
break
2082
1573
"dress: %s", fpr, address)
2083
1574
if self.use_dbus:
2084
1575
# Emit D-Bus signal
2085
mandos_dbus_service.ClientNotFound(fpr,
2086
address[0])
1576
mandos_dbus_service.ClientNotFound(fpr, address[0])
2087
1577
parent_pipe.send(False)
2088
1578
return False
2089
1579
2090
1580
gobject.io_add_watch(parent_pipe.fileno(),
2091
1581
gobject.IO_IN | gobject.IO_HUP,
2092
1582
functools.partial(self.handle_ipc,
2093
parent_pipe =
2094
parent_pipe,
2095
proc = proc,
2096
client_object =
2097
client))
1583
parent_pipe = parent_pipe,
1584
client_object = client))
2098
1585
parent_pipe.send(True)
2099
# remove the old hook in favor of the new above hook on
2100
# same fileno
1586
# remove the old hook in favor of the new above hook on same fileno
2101
1587
return False
2102
1588
if command == 'funcall':
2103
1589
funcname = request[1]
2104
1590
args = request[2]
2105
1591
kwargs = request[3]
2106
1592
2107
parent_pipe.send(('data', getattr(client_object,
2108
funcname)(*args,
2109
**kwargs)))
2110
1593
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
1594
2111
1595
if command == 'getattr':
2112
1596
attrname = request[1]
2113
1597
if callable(client_object.__getattribute__(attrname)):
2114
1598
parent_pipe.send(('function',))
2115
1599
else:
2116
parent_pipe.send(('data', client_object
2117
.__getattribute__(attrname)))
1600
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
2118
1601
2119
1602
if command == 'setattr':
2120
1603
attrname = request[1]
2121
1604
value = request[2]
2122
1605
setattr(client_object, attrname, value)
2123
1606
2124
1607
return True
2125
1608
2126
1609
2127
def rfc3339_duration_to_delta(duration):
2128
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2129
2130
>>> rfc3339_duration_to_delta("P7D")
2131
datetime.timedelta(7)
2132
>>> rfc3339_duration_to_delta("PT60S")
2133
datetime.timedelta(0, 60)
2134
>>> rfc3339_duration_to_delta("PT60M")
2135
datetime.timedelta(0, 3600)
2136
>>> rfc3339_duration_to_delta("PT24H")
2137
datetime.timedelta(1)
2138
>>> rfc3339_duration_to_delta("P1W")
2139
datetime.timedelta(7)
2140
>>> rfc3339_duration_to_delta("PT5M30S")
2141
datetime.timedelta(0, 330)
2142
>>> rfc3339_duration_to_delta("P1DT3M20S")
2143
datetime.timedelta(1, 200)
2144
"""
2145
2146
# Parsing an RFC 3339 duration with regular expressions is not
2147
# possible - there would have to be multiple places for the same
2148
# values, like seconds. The current code, while more esoteric, is
2149
# cleaner without depending on a parsing library. If Python had a
2150
# built-in library for parsing we would use it, but we'd like to
2151
# avoid excessive use of external libraries.
2152
2153
# New type for defining tokens, syntax, and semantics all-in-one
2154
Token = collections.namedtuple("Token",
2155
("regexp", # To match token; if
2156
# "value" is not None,
2157
# must have a "group"
2158
# containing digits
2159
"value", # datetime.timedelta or
2160
# None
2161
"followers")) # Tokens valid after
2162
# this token
2163
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2164
# the "duration" ABNF definition in RFC 3339, Appendix A.
2165
token_end = Token(re.compile(r"$"), None, frozenset())
2166
token_second = Token(re.compile(r"(\d+)S"),
2167
datetime.timedelta(seconds=1),
2168
frozenset((token_end,)))
2169
token_minute = Token(re.compile(r"(\d+)M"),
2170
datetime.timedelta(minutes=1),
2171
frozenset((token_second, token_end)))
2172
token_hour = Token(re.compile(r"(\d+)H"),
2173
datetime.timedelta(hours=1),
2174
frozenset((token_minute, token_end)))
2175
token_time = Token(re.compile(r"T"),
2176
None,
2177
frozenset((token_hour, token_minute,
2178
token_second)))
2179
token_day = Token(re.compile(r"(\d+)D"),
2180
datetime.timedelta(days=1),
2181
frozenset((token_time, token_end)))
2182
token_month = Token(re.compile(r"(\d+)M"),
2183
datetime.timedelta(weeks=4),
2184
frozenset((token_day, token_end)))
2185
token_year = Token(re.compile(r"(\d+)Y"),
2186
datetime.timedelta(weeks=52),
2187
frozenset((token_month, token_end)))
2188
token_week = Token(re.compile(r"(\d+)W"),
2189
datetime.timedelta(weeks=1),
2190
frozenset((token_end,)))
2191
token_duration = Token(re.compile(r"P"), None,
2192
frozenset((token_year, token_month,
2193
token_day, token_time,
2194
token_week))),
2195
# Define starting values
2196
value = datetime.timedelta() # Value so far
2197
found_token = None
2198
followers = frozenset(token_duration,) # Following valid tokens
2199
s = duration # String left to parse
2200
# Loop until end token is found
2201
while found_token is not token_end:
2202
# Search for any currently valid tokens
2203
for token in followers:
2204
match = token.regexp.match(s)
2205
if match is not None:
2206
# Token found
2207
if token.value is not None:
2208
# Value found, parse digits
2209
factor = int(match.group(1), 10)
2210
# Add to value so far
2211
value += factor * token.value
2212
# Strip token from string
2213
s = token.regexp.sub("", s, 1)
2214
# Go to found token
2215
found_token = token
2216
# Set valid next tokens
2217
followers = found_token.followers
2218
break
2219
else:
2220
# No currently valid tokens were found
2221
raise ValueError("Invalid RFC 3339 duration")
2222
# End token found
2223
return value
2224
2225
2226
1610
def string_to_delta(interval):
2227
1611
"""Parse a string and return a datetime.timedelta
2228
1612
2239
1623
>>> string_to_delta('5m 30s')
2240
1624
datetime.timedelta(0, 330)
2241
1625
"""
2242
2243
try:
2244
return rfc3339_duration_to_delta(interval)
2245
except ValueError:
2246
pass
2247
2248
1626
timevalue = datetime.timedelta(0)
2249
1627
for s in interval.split():
2250
1628
try:
2261
1639
elif suffix == "w":
2262
1640
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2263
1641
else:
2264
raise ValueError("Unknown suffix {0!r}"
2265
.format(suffix))
2266
except IndexError as e:
1642
raise ValueError("Unknown suffix %r" % suffix)
1643
except (ValueError, IndexError) as e:
2267
1644
raise ValueError(*(e.args))
2268
1645
timevalue += delta
2269
1646
return timevalue
2270
1647
2271
1648
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
2272
1673
def daemon(nochdir = False, noclose = False):
2273
1674
"""See daemon(3). Standard BSD Unix function.
2274
1675
2282
1683
sys.exit()
2283
1684
if not noclose:
2284
1685
# Close all standard open file descriptors
2285
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1686
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2286
1687
if not stat.S_ISCHR(os.fstat(null).st_mode):
2287
1688
raise OSError(errno.ENODEV,
2288
"{0} not a character device"
2289
.format(os.devnull))
1689
"%s not a character device"
1690
% os.path.devnull)
2290
1691
os.dup2(null, sys.stdin.fileno())
2291
1692
os.dup2(null, sys.stdout.fileno())
2292
1693
os.dup2(null, sys.stderr.fileno())
2301
1702
2302
1703
parser = argparse.ArgumentParser()
2303
1704
parser.add_argument("-v", "--version", action="version",
2304
version = "%(prog)s {0}".format(version),
1705
version = "%%(prog)s %s" % version,
2305
1706
help="show version number and exit")
2306
1707
parser.add_argument("-i", "--interface", metavar="IF",
2307
1708
help="Bind to interface IF")
2313
1714
help="Run self-test")
2314
1715
parser.add_argument("--debug", action="store_true",
2315
1716
help="Debug mode; run in foreground and log"
2316
" to terminal", default=None)
1717
" to terminal")
2317
1718
parser.add_argument("--debuglevel", metavar="LEVEL",
2318
1719
help="Debug level for stdout output")
2319
1720
parser.add_argument("--priority", help="GnuTLS"
2326
1727
" files")
2327
1728
parser.add_argument("--no-dbus", action="store_false",
2328
1729
dest="use_dbus", help="Do not provide D-Bus"
2329
" system bus interface", default=None)
1730
" system bus interface")
2330
1731
parser.add_argument("--no-ipv6", action="store_false",
2331
dest="use_ipv6", help="Do not use IPv6",
2332
default=None)
2333
parser.add_argument("--no-restore", action="store_false",
2334
dest="restore", help="Do not restore stored"
2335
" state", default=None)
2336
parser.add_argument("--socket", type=int,
2337
help="Specify a file descriptor to a network"
2338
" socket to use instead of creating one")
2339
parser.add_argument("--statedir", metavar="DIR",
2340
help="Directory to save/restore state in")
2341
parser.add_argument("--foreground", action="store_true",
2342
help="Run in foreground", default=None)
2343
1732
dest="use_ipv6", help="Do not use IPv6")
2344
1733
options = parser.parse_args()
2345
1734
2346
1735
if options.check:
2347
1736
import doctest
2348
fail_count, test_count = doctest.testmod()
2349
sys.exit(os.EX_OK if fail_count == 0 else 1)
1737
doctest.testmod()
1738
sys.exit()
2350
1739
2351
1740
# Default values for config file for server-global settings
2352
1741
server_defaults = { "interface": "",
2354
1743
"port": "",
2355
1744
"debug": "False",
2356
1745
"priority":
2357
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:+SIGN-RSA-SHA224:+SIGN-RSA-RMD160",
1746
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2358
1747
"servicename": "Mandos",
2359
1748
"use_dbus": "True",
2360
1749
"use_ipv6": "True",
2361
1750
"debuglevel": "",
2362
"restore": "True",
2363
"socket": "",
2364
"statedir": "/var/lib/mandos",
2365
"foreground": "False",
2366
1751
}
2367
1752
2368
1753
# Parse config file for server-global settings
2373
1758
# Convert the SafeConfigParser object to a dict
2374
1759
server_settings = server_config.defaults()
2375
1760
# Use the appropriate methods on the non-string config options
2376
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
1761
for option in ("debug", "use_dbus", "use_ipv6"):
2377
1762
server_settings[option] = server_config.getboolean("DEFAULT",
2378
1763
option)
2379
1764
if server_settings["port"]:
2380
1765
server_settings["port"] = server_config.getint("DEFAULT",
2381
1766
"port")
2382
if server_settings["socket"]:
2383
server_settings["socket"] = server_config.getint("DEFAULT",
2384
"socket")
2385
# Later, stdin will, and stdout and stderr might, be dup'ed
2386
# over with an opened os.devnull. But we don't want this to
2387
# happen with a supplied network socket.
2388
if 0 <= server_settings["socket"] <= 2:
2389
server_settings["socket"] = os.dup(server_settings
2390
["socket"])
2391
1767
del server_config
2392
1768
2393
1769
# Override the settings from the config file with command line
2394
1770
# options, if set.
2395
1771
for option in ("interface", "address", "port", "debug",
2396
1772
"priority", "servicename", "configdir",
2397
"use_dbus", "use_ipv6", "debuglevel", "restore",
2398
"statedir", "socket", "foreground"):
1773
"use_dbus", "use_ipv6", "debuglevel"):
2399
1774
value = getattr(options, option)
2400
1775
if value is not None:
2401
1776
server_settings[option] = value
2404
1779
for option in server_settings.keys():
2405
1780
if type(server_settings[option]) is str:
2406
1781
server_settings[option] = unicode(server_settings[option])
2407
# Force all boolean options to be boolean
2408
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2409
"foreground"):
2410
server_settings[option] = bool(server_settings[option])
2411
# Debug implies foreground
2412
if server_settings["debug"]:
2413
server_settings["foreground"] = True
2414
1782
# Now we have our good server settings in "server_settings"
2415
1783
2416
1784
##################################################################
2420
1788
debuglevel = server_settings["debuglevel"]
2421
1789
use_dbus = server_settings["use_dbus"]
2422
1790
use_ipv6 = server_settings["use_ipv6"]
2423
stored_state_path = os.path.join(server_settings["statedir"],
2424
stored_state_file)
2425
foreground = server_settings["foreground"]
2426
2427
if debug:
2428
initlogger(debug, logging.DEBUG)
2429
else:
2430
if not debuglevel:
2431
initlogger(debug)
2432
else:
2433
level = getattr(logging, debuglevel.upper())
2434
initlogger(debug, level)
2435
1791
2436
1792
if server_settings["servicename"] != "Mandos":
2437
1793
syslogger.setFormatter(logging.Formatter
2438
('Mandos ({0}) [%(process)d]:'
2439
' %(levelname)s: %(message)s'
2440
.format(server_settings
2441
["servicename"])))
1794
('Mandos (%s) [%%(process)d]:'
1795
' %%(levelname)s: %%(message)s'
1796
% server_settings["servicename"]))
2442
1797
2443
1798
# Parse config file with clients
2444
client_config = configparser.SafeConfigParser(Client
2445
.client_defaults)
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)
2446
1807
client_config.read(os.path.join(server_settings["configdir"],
2447
1808
"clients.conf"))
2448
1809
2457
1818
use_ipv6=use_ipv6,
2458
1819
gnutls_priority=
2459
1820
server_settings["priority"],
2460
use_dbus=use_dbus,
2461
socketfd=(server_settings["socket"]
2462
or None))
2463
if not foreground:
2464
pidfilename = "/run/mandos.pid"
2465
if not os.path.isdir("/run/."):
2466
pidfilename = "/var/run/mandos.pid"
2467
pidfile = None
1821
use_dbus=use_dbus)
1822
if not debug:
1823
pidfilename = "/var/run/mandos.pid"
2468
1824
try:
2469
1825
pidfile = open(pidfilename, "w")
2470
except IOError as e:
2471
logger.error("Could not open file %r", pidfilename,
2472
exc_info=e)
1826
except IOError:
1827
logger.error("Could not open file %r", pidfilename)
2473
1828
2474
for name in ("_mandos", "mandos", "nobody"):
1829
try:
1830
uid = pwd.getpwnam("_mandos").pw_uid
1831
gid = pwd.getpwnam("_mandos").pw_gid
1832
except KeyError:
2475
1833
try:
2476
uid = pwd.getpwnam(name).pw_uid
2477
gid = pwd.getpwnam(name).pw_gid
2478
break
1834
uid = pwd.getpwnam("mandos").pw_uid
1835
gid = pwd.getpwnam("mandos").pw_gid
2479
1836
except KeyError:
2480
continue
2481
else:
2482
uid = 65534
2483
gid = 65534
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
2484
1843
try:
2485
1844
os.setgid(gid)
2486
1845
os.setuid(uid)
2487
1846
except OSError as error:
2488
if error.errno != errno.EPERM:
2489
raise
1847
if error[0] != errno.EPERM:
1848
raise error
2490
1849
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
2491
1858
if debug:
2492
1859
# Enable all possible GnuTLS debugging
2493
1860
2503
1870
.gnutls_global_set_log_function(debug_gnutls))
2504
1871
2505
1872
# Redirect stdin so all checkers get /dev/null
2506
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1873
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2507
1874
os.dup2(null, sys.stdin.fileno())
2508
1875
if null > 2:
2509
1876
os.close(null)
1877
else:
1878
# No console logging
1879
logger.removeHandler(console)
2510
1880
2511
1881
# Need to fork before connecting to D-Bus
2512
if not foreground:
1882
if not debug:
2513
1883
# Close all input and output, do double fork, etc.
2514
1884
daemon()
2515
1885
2516
# multiprocessing will use threads, so before we use gobject we
2517
# need to inform gobject that threads will be used.
2518
gobject.threads_init()
2519
2520
1886
global main_loop
2521
1887
# From the Avahi example code
2522
DBusGMainLoop(set_as_default=True)
1888
DBusGMainLoop(set_as_default=True )
2523
1889
main_loop = gobject.MainLoop()
2524
1890
bus = dbus.SystemBus()
2525
1891
# End of Avahi example code
2526
1892
if use_dbus:
2527
1893
try:
2528
bus_name = dbus.service.BusName("se.recompile.Mandos",
1894
bus_name = dbus.service.BusName("se.bsnet.fukt.Mandos",
2529
1895
bus, do_not_queue=True)
2530
old_bus_name = (dbus.service.BusName
2531
("se.bsnet.fukt.Mandos", bus,
2532
do_not_queue=True))
2533
1896
except dbus.exceptions.NameExistsException as e:
2534
logger.error("Disabling D-Bus:", exc_info=e)
1897
logger.error(unicode(e) + ", disabling D-Bus")
2535
1898
use_dbus = False
2536
1899
server_settings["use_dbus"] = False
2537
1900
tcp_server.use_dbus = False
2538
1901
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2539
service = AvahiServiceToSyslog(name =
2540
server_settings["servicename"],
2541
servicetype = "_mandos._tcp",
2542
protocol = protocol, bus = bus)
1902
service = AvahiService(name = server_settings["servicename"],
1903
servicetype = "_mandos._tcp",
1904
protocol = protocol, bus = bus)
2543
1905
if server_settings["interface"]:
2544
1906
service.interface = (if_nametoindex
2545
1907
(str(server_settings["interface"])))
2550
1912
client_class = Client
2551
1913
if use_dbus:
2552
1914
client_class = functools.partial(ClientDBus, bus = bus)
2553
2554
client_settings = Client.config_parser(client_config)
2555
old_client_settings = {}
2556
clients_data = {}
2557
2558
# This is used to redirect stdout and stderr for checker processes
2559
global wnull
2560
wnull = open(os.devnull, "w") # A writable /dev/null
2561
# Only used if server is running in foreground but not in debug
2562
# mode
2563
if debug or not foreground:
2564
wnull.close()
2565
2566
# Get client data and settings from last running state.
2567
if server_settings["restore"]:
2568
try:
2569
with open(stored_state_path, "rb") as stored_state:
2570
clients_data, old_client_settings = (pickle.load
2571
(stored_state))
2572
os.remove(stored_state_path)
2573
except IOError as e:
2574
if e.errno == errno.ENOENT:
2575
logger.warning("Could not load persistent state: {0}"
2576
.format(os.strerror(e.errno)))
2577
else:
2578
logger.critical("Could not load persistent state:",
2579
exc_info=e)
2580
raise
2581
except EOFError as e:
2582
logger.warning("Could not load persistent state: "
2583
"EOFError:", exc_info=e)
2584
2585
with PGPEngine() as pgp:
2586
for client_name, client in clients_data.iteritems():
2587
# Skip removed clients
2588
if client_name not in client_settings:
2589
continue
2590
2591
# Decide which value to use after restoring saved state.
2592
# We have three different values: Old config file,
2593
# new config file, and saved state.
2594
# New config value takes precedence if it differs from old
2595
# config value, otherwise use saved state.
2596
for name, value in client_settings[client_name].items():
2597
try:
2598
# For each value in new config, check if it
2599
# differs from the old config value (Except for
2600
# the "secret" attribute)
2601
if (name != "secret" and
2602
value != old_client_settings[client_name]
2603
[name]):
2604
client[name] = value
2605
except KeyError:
2606
pass
2607
2608
# Clients who has passed its expire date can still be
2609
# enabled if its last checker was successful. Clients
2610
# whose checker succeeded before we stored its state is
2611
# assumed to have successfully run all checkers during
2612
# downtime.
2613
if client["enabled"]:
2614
if datetime.datetime.utcnow() >= client["expires"]:
2615
if not client["last_checked_ok"]:
2616
logger.warning(
2617
"disabling client {0} - Client never "
2618
"performed a successful checker"
2619
.format(client_name))
2620
client["enabled"] = False
2621
elif client["last_checker_status"] != 0:
2622
logger.warning(
2623
"disabling client {0} - Client "
2624
"last checker failed with error code {1}"
2625
.format(client_name,
2626
client["last_checker_status"]))
2627
client["enabled"] = False
2628
else:
2629
client["expires"] = (datetime.datetime
2630
.utcnow()
2631
+ client["timeout"])
2632
logger.debug("Last checker succeeded,"
2633
" keeping {0} enabled"
2634
.format(client_name))
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):
2635
1922
try:
2636
client["secret"] = (
2637
pgp.decrypt(client["encrypted_secret"],
2638
client_settings[client_name]
2639
["secret"]))
2640
except PGPError:
2641
# If decryption fails, we use secret from new settings
2642
logger.debug("Failed to decrypt {0} old secret"
2643
.format(client_name))
2644
client["secret"] = (
2645
client_settings[client_name]["secret"])
2646
2647
# Add/remove clients based on new changes made to config
2648
for client_name in (set(old_client_settings)
2649
- set(client_settings)):
2650
del clients_data[client_name]
2651
for client_name in (set(client_settings)
2652
- set(old_client_settings)):
2653
clients_data[client_name] = client_settings[client_name]
2654
2655
# Create all client objects
2656
for client_name, client in clients_data.iteritems():
2657
tcp_server.clients[client_name] = client_class(
2658
name = client_name, settings = client,
2659
server_settings = server_settings)
2660
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()))
2661
1932
if not tcp_server.clients:
2662
1933
logger.warning("No clients defined")
2663
2664
if not foreground:
2665
if pidfile is not None:
2666
try:
2667
with pidfile:
2668
pid = os.getpid()
2669
pidfile.write(str(pid) + "\n".encode("utf-8"))
2670
except IOError:
2671
logger.error("Could not write to file %r with PID %d",
2672
pidfilename, pid)
2673
del pidfile
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
1947
del pidfilename
2675
1948
1949
signal.signal(signal.SIGINT, signal.SIG_IGN)
1950
2676
1951
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2677
1952
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2678
1953
2679
1954
if use_dbus:
2680
@alternate_dbus_interfaces({"se.recompile.Mandos":
2681
"se.bsnet.fukt.Mandos"})
2682
class MandosDBusService(DBusObjectWithProperties):
1955
class MandosDBusService(dbus.service.Object):
2683
1956
"""A D-Bus proxy object"""
2684
1957
def __init__(self):
2685
1958
dbus.service.Object.__init__(self, bus, "/")
2686
_interface = "se.recompile.Mandos"
2687
2688
@dbus_interface_annotations(_interface)
2689
def _foo(self):
2690
return { "org.freedesktop.DBus.Property"
2691
".EmitsChangedSignal":
2692
"false"}
1959
_interface = "se.bsnet.fukt.Mandos"
2693
1960
2694
1961
@dbus.service.signal(_interface, signature="o")
2695
1962
def ClientAdded(self, objpath):
2710
1977
def GetAllClients(self):
2711
1978
"D-Bus method"
2712
1979
return dbus.Array(c.dbus_object_path
2713
for c in
2714
tcp_server.clients.itervalues())
1980
for c in tcp_server.clients)
2715
1981
2716
1982
@dbus.service.method(_interface,
2717
1983
out_signature="a{oa{sv}}")
2719
1985
"D-Bus method"
2720
1986
return dbus.Dictionary(
2721
1987
((c.dbus_object_path, c.GetAll(""))
2722
for c in tcp_server.clients.itervalues()),
1988
for c in tcp_server.clients),
2723
1989
signature="oa{sv}")
2724
1990
2725
1991
@dbus.service.method(_interface, in_signature="o")
2726
1992
def RemoveClient(self, object_path):
2727
1993
"D-Bus method"
2728
for c in tcp_server.clients.itervalues():
1994
for c in tcp_server.clients:
2729
1995
if c.dbus_object_path == object_path:
2730
del tcp_server.clients[c.name]
1996
tcp_server.clients.remove(c)
2731
1997
c.remove_from_connection()
2732
1998
# Don't signal anything except ClientRemoved
2733
1999
c.disable(quiet=True)
2744
2010
"Cleanup function; run on exit"
2745
2011
service.cleanup()
2746
2012
2747
multiprocessing.active_children()
2748
wnull.close()
2749
if not (tcp_server.clients or client_settings):
2750
return
2751
2752
# Store client before exiting. Secrets are encrypted with key
2753
# based on what config file has. If config file is
2754
# removed/edited, old secret will thus be unrecovable.
2755
clients = {}
2756
with PGPEngine() as pgp:
2757
for client in tcp_server.clients.itervalues():
2758
key = client_settings[client.name]["secret"]
2759
client.encrypted_secret = pgp.encrypt(client.secret,
2760
key)
2761
client_dict = {}
2762
2763
# A list of attributes that can not be pickled
2764
# + secret.
2765
exclude = set(("bus", "changedstate", "secret",
2766
"checker", "server_settings"))
2767
for name, typ in (inspect.getmembers
2768
(dbus.service.Object)):
2769
exclude.add(name)
2770
2771
client_dict["encrypted_secret"] = (client
2772
.encrypted_secret)
2773
for attr in client.client_structure:
2774
if attr not in exclude:
2775
client_dict[attr] = getattr(client, attr)
2776
2777
clients[client.name] = client_dict
2778
del client_settings[client.name]["secret"]
2779
2780
try:
2781
with (tempfile.NamedTemporaryFile
2782
(mode='wb', suffix=".pickle", prefix='clients-',
2783
dir=os.path.dirname(stored_state_path),
2784
delete=False)) as stored_state:
2785
pickle.dump((clients, client_settings), stored_state)
2786
tempname=stored_state.name
2787
os.rename(tempname, stored_state_path)
2788
except (IOError, OSError) as e:
2789
if not debug:
2790
try:
2791
os.remove(tempname)
2792
except NameError:
2793
pass
2794
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
2795
logger.warning("Could not save persistent state: {0}"
2796
.format(os.strerror(e.errno)))
2797
else:
2798
logger.warning("Could not save persistent state:",
2799
exc_info=e)
2800
raise
2801
2802
# Delete all clients, and settings from config
2803
2013
while tcp_server.clients:
2804
name, client = tcp_server.clients.popitem()
2014
client = tcp_server.clients.pop()
2805
2015
if use_dbus:
2806
2016
client.remove_from_connection()
2017
client.disable_hook = None
2807
2018
# Don't signal anything except ClientRemoved
2808
2019
client.disable(quiet=True)
2809
2020
if use_dbus:
2810
2021
# Emit D-Bus signal
2811
mandos_dbus_service.ClientRemoved(client
2812
.dbus_object_path,
2022
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
2813
2023
client.name)
2814
client_settings.clear()
2815
2024
2816
2025
atexit.register(cleanup)
2817
2026
2818
for client in tcp_server.clients.itervalues():
2027
for client in tcp_server.clients:
2819
2028
if use_dbus:
2820
2029
# Emit D-Bus signal
2821
2030
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2822
# Need to initiate checking of clients
2823
if client.enabled:
2824
client.init_checker()
2031
client.enable()
2825
2032
2826
2033
tcp_server.enable()
2827
2034
tcp_server.server_activate()
2830
2037
service.port = tcp_server.socket.getsockname()[1]
2831
2038
if use_ipv6:
2832
2039
logger.info("Now listening on address %r, port %d,"
2833
" flowinfo %d, scope_id %d",
2834
*tcp_server.socket.getsockname())
2040
" flowinfo %d, scope_id %d"
2041
% tcp_server.socket.getsockname())
2835
2042
else: # IPv4
2836
logger.info("Now listening on address %r, port %d",
2837
*tcp_server.socket.getsockname())
2043
logger.info("Now listening on address %r, port %d"
2044
% tcp_server.socket.getsockname())
2838
2045
2839
2046
#service.interface = tcp_server.socket.getsockname()[3]
2840
2047
2843
2050
try:
2844
2051
service.activate()
2845
2052
except dbus.exceptions.DBusException as error:
2846
logger.critical("D-Bus Exception", exc_info=error)
2053
logger.critical("DBusException: %s", error)
2847
2054
cleanup()
2848
2055
sys.exit(1)
2849
2056
# End of Avahi example code
2856
2063
logger.debug("Starting main loop")
2857
2064
main_loop.run()
2858
2065
except AvahiError as error:
2859
logger.critical("Avahi Error", exc_info=error)
2066
logger.critical("AvahiError: %s", error)
2860
2067
cleanup()
2861
2068
sys.exit(1)
2862
2069
except KeyboardInterrupt:
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0