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- Committer: Björn Påhlsson
- Date: 2011-10-15 16:48:03 UTC
- Revision ID: belorn@fukt.bsnet.se-20111015164803-61q3hzrv91d042mb
Tags: version-1.4.1-1
* Makefile (version): Changed to "1.4.1".
* NEWS (Version 1.4.1): New entry.
* debian/changelog (1.4.1-1): - '' -
* NEWS (Version 1.4.1): New entry.
* debian/changelog (1.4.1-1): - '' -
- 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 © 2008-2012 Teddy Hogeborn
15
# Copyright © 2008-2012 Björn Påhlsson
14
# Copyright © 2008-2011 Teddy Hogeborn
15
# Copyright © 2008-2011 Björn Påhlsson
16
16
#
17
17
# This program is free software: you can redistribute it and/or modify
18
18
# it under the terms of the GNU General Public License as published by
34
34
from __future__ import (division, absolute_import, print_function,
35
35
unicode_literals)
36
36
37
from future_builtins import *
38
39
37
import SocketServer as socketserver
40
38
import socket
41
39
import argparse
65
63
import cPickle as pickle
66
64
import multiprocessing
67
65
import types
68
import binascii
69
import tempfile
70
import itertools
71
66
72
67
import dbus
73
68
import dbus.service
78
73
import ctypes.util
79
74
import xml.dom.minidom
80
75
import inspect
81
import GnuPGInterface
82
76
83
77
try:
84
78
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
88
82
except ImportError:
89
83
SO_BINDTODEVICE = None
90
84
91
version = "1.6.0"
92
stored_state_file = "clients.pickle"
93
94
logger = logging.getLogger()
85
86
version = "1.4.1"
87
88
#logger = logging.getLogger('mandos')
89
logger = logging.Logger('mandos')
95
90
syslogger = (logging.handlers.SysLogHandler
96
91
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
97
92
address = str("/dev/log")))
98
99
try:
100
if_nametoindex = (ctypes.cdll.LoadLibrary
101
(ctypes.util.find_library("c"))
102
.if_nametoindex)
103
except (OSError, AttributeError):
104
def if_nametoindex(interface):
105
"Get an interface index the hard way, i.e. using fcntl()"
106
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
107
with contextlib.closing(socket.socket()) as s:
108
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
109
struct.pack(str("16s16x"),
110
interface))
111
interface_index = struct.unpack(str("I"),
112
ifreq[16:20])[0]
113
return interface_index
114
115
116
def initlogger(debug, level=logging.WARNING):
117
"""init logger and add loglevel"""
118
119
syslogger.setFormatter(logging.Formatter
120
('Mandos [%(process)d]: %(levelname)s:'
121
' %(message)s'))
122
logger.addHandler(syslogger)
123
124
if debug:
125
console = logging.StreamHandler()
126
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
127
' [%(process)d]:'
128
' %(levelname)s:'
129
' %(message)s'))
130
logger.addHandler(console)
131
logger.setLevel(level)
132
133
134
class PGPError(Exception):
135
"""Exception if encryption/decryption fails"""
136
pass
137
138
139
class PGPEngine(object):
140
"""A simple class for OpenPGP symmetric encryption & decryption"""
141
def __init__(self):
142
self.gnupg = GnuPGInterface.GnuPG()
143
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
144
self.gnupg = GnuPGInterface.GnuPG()
145
self.gnupg.options.meta_interactive = False
146
self.gnupg.options.homedir = self.tempdir
147
self.gnupg.options.extra_args.extend(['--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
return b"mandos" + binascii.hexlify(password)
178
179
def encrypt(self, data, password):
180
self.gnupg.passphrase = self.password_encode(password)
181
with open(os.devnull, "w") as devnull:
182
try:
183
proc = self.gnupg.run(['--symmetric'],
184
create_fhs=['stdin', 'stdout'],
185
attach_fhs={'stderr': devnull})
186
with contextlib.closing(proc.handles['stdin']) as f:
187
f.write(data)
188
with contextlib.closing(proc.handles['stdout']) as f:
189
ciphertext = f.read()
190
proc.wait()
191
except IOError as e:
192
raise PGPError(e)
193
self.gnupg.passphrase = None
194
return ciphertext
195
196
def decrypt(self, data, password):
197
self.gnupg.passphrase = self.password_encode(password)
198
with open(os.devnull, "w") as devnull:
199
try:
200
proc = self.gnupg.run(['--decrypt'],
201
create_fhs=['stdin', 'stdout'],
202
attach_fhs={'stderr': devnull})
203
with contextlib.closing(proc.handles['stdin']) as f:
204
f.write(data)
205
with contextlib.closing(proc.handles['stdout']) as f:
206
decrypted_plaintext = f.read()
207
proc.wait()
208
except IOError as e:
209
raise PGPError(e)
210
self.gnupg.passphrase = None
211
return decrypted_plaintext
212
93
syslogger.setFormatter(logging.Formatter
94
('Mandos [%(process)d]: %(levelname)s:'
95
' %(message)s'))
96
logger.addHandler(syslogger)
97
98
console = logging.StreamHandler()
99
console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'
100
' %(levelname)s:'
101
' %(message)s'))
102
logger.addHandler(console)
213
103
214
104
class AvahiError(Exception):
215
105
def __init__(self, value, *args, **kwargs):
245
135
server: D-Bus Server
246
136
bus: dbus.SystemBus()
247
137
"""
248
249
138
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
250
139
servicetype = None, port = None, TXT = None,
251
140
domain = "", host = "", max_renames = 32768,
264
153
self.server = None
265
154
self.bus = bus
266
155
self.entry_group_state_changed_match = None
267
268
156
def rename(self):
269
157
"""Derived from the Avahi example code"""
270
158
if self.rename_count >= self.max_renames:
276
164
.GetAlternativeServiceName(self.name))
277
165
logger.info("Changing Zeroconf service name to %r ...",
278
166
self.name)
167
syslogger.setFormatter(logging.Formatter
168
('Mandos (%s) [%%(process)d]:'
169
' %%(levelname)s: %%(message)s'
170
% self.name))
279
171
self.remove()
280
172
try:
281
173
self.add()
282
174
except dbus.exceptions.DBusException as error:
283
logger.critical("D-Bus Exception", exc_info=error)
175
logger.critical("DBusException: %s", error)
284
176
self.cleanup()
285
177
os._exit(1)
286
178
self.rename_count += 1
287
288
179
def remove(self):
289
180
"""Derived from the Avahi example code"""
290
181
if self.entry_group_state_changed_match is not None:
292
183
self.entry_group_state_changed_match = None
293
184
if self.group is not None:
294
185
self.group.Reset()
295
296
186
def add(self):
297
187
"""Derived from the Avahi example code"""
298
188
self.remove()
303
193
avahi.DBUS_INTERFACE_ENTRY_GROUP)
304
194
self.entry_group_state_changed_match = (
305
195
self.group.connect_to_signal(
306
'StateChanged', self.entry_group_state_changed))
196
'StateChanged', self .entry_group_state_changed))
307
197
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
308
198
self.name, self.type)
309
199
self.group.AddService(
315
205
dbus.UInt16(self.port),
316
206
avahi.string_array_to_txt_array(self.TXT))
317
207
self.group.Commit()
318
319
208
def entry_group_state_changed(self, state, error):
320
209
"""Derived from the Avahi example code"""
321
210
logger.debug("Avahi entry group state change: %i", state)
328
217
elif state == avahi.ENTRY_GROUP_FAILURE:
329
218
logger.critical("Avahi: Error in group state changed %s",
330
219
unicode(error))
331
raise AvahiGroupError("State changed: {0!s}"
332
.format(error))
333
220
raise AvahiGroupError("State changed: %s"
221
% unicode(error))
334
222
def cleanup(self):
335
223
"""Derived from the Avahi example code"""
336
224
if self.group is not None:
337
225
try:
338
226
self.group.Free()
339
227
except (dbus.exceptions.UnknownMethodException,
340
dbus.exceptions.DBusException):
228
dbus.exceptions.DBusException) as e:
341
229
pass
342
230
self.group = None
343
231
self.remove()
344
345
232
def server_state_changed(self, state, error=None):
346
233
"""Derived from the Avahi example code"""
347
234
logger.debug("Avahi server state change: %i", state)
366
253
logger.debug("Unknown state: %r", state)
367
254
else:
368
255
logger.debug("Unknown state: %r: %r", state, error)
369
370
256
def activate(self):
371
257
"""Derived from the Avahi example code"""
372
258
if self.server is None:
380
266
self.server_state_changed(self.server.GetState())
381
267
382
268
383
class AvahiServiceToSyslog(AvahiService):
384
def rename(self):
385
"""Add the new name to the syslog messages"""
386
ret = AvahiService.rename(self)
387
syslogger.setFormatter(logging.Formatter
388
('Mandos ({0}) [%(process)d]:'
389
' %(levelname)s: %(message)s'
390
.format(self.name)))
391
return ret
392
393
394
def timedelta_to_milliseconds(td):
269
def _timedelta_to_milliseconds(td):
395
270
"Convert a datetime.timedelta() to milliseconds"
396
271
return ((td.days * 24 * 60 * 60 * 1000)
397
272
+ (td.seconds * 1000)
398
273
+ (td.microseconds // 1000))
399
400
274
401
275
class Client(object):
402
276
"""A representation of a client host served by this server.
403
277
404
278
Attributes:
405
approved: bool(); 'None' if not yet approved/disapproved
279
_approved: bool(); 'None' if not yet approved/disapproved
406
280
approval_delay: datetime.timedelta(); Time to wait for approval
407
281
approval_duration: datetime.timedelta(); Duration of one approval
408
282
checker: subprocess.Popen(); a running checker process used
415
289
instance %(name)s can be used in the command.
416
290
checker_initiator_tag: a gobject event source tag, or None
417
291
created: datetime.datetime(); (UTC) object creation
418
client_structure: Object describing what attributes a client has
419
and is used for storing the client at exit
420
292
current_checker_command: string; current running checker_command
293
disable_hook: If set, called by disable() as disable_hook(self)
421
294
disable_initiator_tag: a gobject event source tag, or None
422
295
enabled: bool()
423
296
fingerprint: string (40 or 32 hexadecimal digits); used to
426
299
interval: datetime.timedelta(); How often to start a new checker
427
300
last_approval_request: datetime.datetime(); (UTC) or None
428
301
last_checked_ok: datetime.datetime(); (UTC) or None
429
last_checker_status: integer between 0 and 255 reflecting exit
430
status of last checker. -1 reflects crashed
431
checker, -2 means no checker completed yet.
432
last_enabled: datetime.datetime(); (UTC) or None
302
last_enabled: datetime.datetime(); (UTC)
433
303
name: string; from the config file, used in log messages and
434
304
D-Bus identifiers
435
305
secret: bytestring; sent verbatim (over TLS) to client
436
306
timeout: datetime.timedelta(); How long from last_checked_ok
437
307
until this client is disabled
438
extended_timeout: extra long timeout when secret has been sent
308
extended_timeout: extra long timeout when password has been sent
439
309
runtime_expansions: Allowed attributes for runtime expansion.
440
310
expires: datetime.datetime(); time (UTC) when a client will be
441
311
disabled, or None
442
312
"""
443
313
444
314
runtime_expansions = ("approval_delay", "approval_duration",
445
"created", "enabled", "expires",
446
"fingerprint", "host", "interval",
447
"last_approval_request", "last_checked_ok",
315
"created", "enabled", "fingerprint",
316
"host", "interval", "last_checked_ok",
448
317
"last_enabled", "name", "timeout")
449
client_defaults = { "timeout": "5m",
450
"extended_timeout": "15m",
451
"interval": "2m",
452
"checker": "fping -q -- %%(host)s",
453
"host": "",
454
"approval_delay": "0s",
455
"approval_duration": "1s",
456
"approved_by_default": "True",
457
"enabled": "True",
458
}
459
318
460
319
def timeout_milliseconds(self):
461
320
"Return the 'timeout' attribute in milliseconds"
462
return timedelta_to_milliseconds(self.timeout)
321
return _timedelta_to_milliseconds(self.timeout)
463
322
464
323
def extended_timeout_milliseconds(self):
465
324
"Return the 'extended_timeout' attribute in milliseconds"
466
return timedelta_to_milliseconds(self.extended_timeout)
325
return _timedelta_to_milliseconds(self.extended_timeout)
467
326
468
327
def interval_milliseconds(self):
469
328
"Return the 'interval' attribute in milliseconds"
470
return timedelta_to_milliseconds(self.interval)
329
return _timedelta_to_milliseconds(self.interval)
471
330
472
331
def approval_delay_milliseconds(self):
473
return timedelta_to_milliseconds(self.approval_delay)
474
475
@staticmethod
476
def config_parser(config):
477
"""Construct a new dict of client settings of this form:
478
{ client_name: {setting_name: value, ...}, ...}
479
with exceptions for any special settings as defined above.
480
NOTE: Must be a pure function. Must return the same result
481
value given the same arguments.
482
"""
483
settings = {}
484
for client_name in config.sections():
485
section = dict(config.items(client_name))
486
client = settings[client_name] = {}
487
488
client["host"] = section["host"]
489
# Reformat values from string types to Python types
490
client["approved_by_default"] = config.getboolean(
491
client_name, "approved_by_default")
492
client["enabled"] = config.getboolean(client_name,
493
"enabled")
494
495
client["fingerprint"] = (section["fingerprint"].upper()
496
.replace(" ", ""))
497
if "secret" in section:
498
client["secret"] = section["secret"].decode("base64")
499
elif "secfile" in section:
500
with open(os.path.expanduser(os.path.expandvars
501
(section["secfile"])),
502
"rb") as secfile:
503
client["secret"] = secfile.read()
504
else:
505
raise TypeError("No secret or secfile for section {0}"
506
.format(section))
507
client["timeout"] = string_to_delta(section["timeout"])
508
client["extended_timeout"] = string_to_delta(
509
section["extended_timeout"])
510
client["interval"] = string_to_delta(section["interval"])
511
client["approval_delay"] = string_to_delta(
512
section["approval_delay"])
513
client["approval_duration"] = string_to_delta(
514
section["approval_duration"])
515
client["checker_command"] = section["checker"]
516
client["last_approval_request"] = None
517
client["last_checked_ok"] = None
518
client["last_checker_status"] = -2
519
520
return settings
521
522
def __init__(self, settings, name = None):
332
return _timedelta_to_milliseconds(self.approval_delay)
333
334
def __init__(self, name = None, disable_hook=None, config=None):
335
"""Note: the 'checker' key in 'config' sets the
336
'checker_command' attribute and *not* the 'checker'
337
attribute."""
523
338
self.name = name
524
# adding all client settings
525
for setting, value in settings.iteritems():
526
setattr(self, setting, value)
527
528
if self.enabled:
529
if not hasattr(self, "last_enabled"):
530
self.last_enabled = datetime.datetime.utcnow()
531
if not hasattr(self, "expires"):
532
self.expires = (datetime.datetime.utcnow()
533
+ self.timeout)
534
else:
535
self.last_enabled = None
536
self.expires = None
537
339
if config is None:
340
config = {}
538
341
logger.debug("Creating client %r", self.name)
539
342
# Uppercase and remove spaces from fingerprint for later
540
343
# comparison purposes with return value from the fingerprint()
541
344
# function
345
self.fingerprint = (config["fingerprint"].upper()
346
.replace(" ", ""))
542
347
logger.debug(" Fingerprint: %s", self.fingerprint)
543
self.created = settings.get("created",
544
datetime.datetime.utcnow())
545
546
# attributes specific for this server instance
348
if "secret" in config:
349
self.secret = config["secret"].decode("base64")
350
elif "secfile" in config:
351
with open(os.path.expanduser(os.path.expandvars
352
(config["secfile"])),
353
"rb") as secfile:
354
self.secret = secfile.read()
355
else:
356
raise TypeError("No secret or secfile for client %s"
357
% self.name)
358
self.host = config.get("host", "")
359
self.created = datetime.datetime.utcnow()
360
self.enabled = False
361
self.last_approval_request = None
362
self.last_enabled = None
363
self.last_checked_ok = None
364
self.timeout = string_to_delta(config["timeout"])
365
self.extended_timeout = string_to_delta(config
366
["extended_timeout"])
367
self.interval = string_to_delta(config["interval"])
368
self.disable_hook = disable_hook
547
369
self.checker = None
548
370
self.checker_initiator_tag = None
549
371
self.disable_initiator_tag = None
372
self.expires = None
550
373
self.checker_callback_tag = None
374
self.checker_command = config["checker"]
551
375
self.current_checker_command = None
552
self.approved = None
376
self.last_connect = None
377
self._approved = None
378
self.approved_by_default = config.get("approved_by_default",
379
True)
553
380
self.approvals_pending = 0
381
self.approval_delay = string_to_delta(
382
config["approval_delay"])
383
self.approval_duration = string_to_delta(
384
config["approval_duration"])
554
385
self.changedstate = (multiprocessing_manager
555
386
.Condition(multiprocessing_manager
556
387
.Lock()))
557
self.client_structure = [attr for attr in
558
self.__dict__.iterkeys()
559
if not attr.startswith("_")]
560
self.client_structure.append("client_structure")
561
562
for name, t in inspect.getmembers(type(self),
563
lambda obj:
564
isinstance(obj,
565
property)):
566
if not name.startswith("_"):
567
self.client_structure.append(name)
568
388
569
# Send notice to process children that client state has changed
570
389
def send_changedstate(self):
571
with self.changedstate:
572
self.changedstate.notify_all()
390
self.changedstate.acquire()
391
self.changedstate.notify_all()
392
self.changedstate.release()
573
393
574
394
def enable(self):
575
395
"""Start this client's checker and timeout hooks"""
576
396
if getattr(self, "enabled", False):
577
397
# Already enabled
578
398
return
579
self.expires = datetime.datetime.utcnow() + self.timeout
580
self.enabled = True
581
self.last_enabled = datetime.datetime.utcnow()
582
self.init_checker()
583
399
self.send_changedstate()
584
585
def disable(self, quiet=True):
586
"""Disable this client."""
587
if not getattr(self, "enabled", False):
588
return False
589
if not quiet:
590
logger.info("Disabling client %s", self.name)
591
if getattr(self, "disable_initiator_tag", None) is not None:
592
gobject.source_remove(self.disable_initiator_tag)
593
self.disable_initiator_tag = None
594
self.expires = None
595
if getattr(self, "checker_initiator_tag", None) is not None:
596
gobject.source_remove(self.checker_initiator_tag)
597
self.checker_initiator_tag = None
598
self.stop_checker()
599
self.enabled = False
600
if not quiet:
601
self.send_changedstate()
602
# Do not run this again if called by a gobject.timeout_add
603
return False
604
605
def __del__(self):
606
self.disable()
607
608
def init_checker(self):
609
400
# Schedule a new checker to be started an 'interval' from now,
610
401
# and every interval from then on.
611
if self.checker_initiator_tag is not None:
612
gobject.source_remove(self.checker_initiator_tag)
613
402
self.checker_initiator_tag = (gobject.timeout_add
614
403
(self.interval_milliseconds(),
615
404
self.start_checker))
616
405
# Schedule a disable() when 'timeout' has passed
617
if self.disable_initiator_tag is not None:
618
gobject.source_remove(self.disable_initiator_tag)
406
self.expires = datetime.datetime.utcnow() + self.timeout
619
407
self.disable_initiator_tag = (gobject.timeout_add
620
408
(self.timeout_milliseconds(),
621
409
self.disable))
410
self.enabled = True
411
self.last_enabled = datetime.datetime.utcnow()
622
412
# Also start a new checker *right now*.
623
413
self.start_checker()
624
414
415
def disable(self, quiet=True):
416
"""Disable this client."""
417
if not getattr(self, "enabled", False):
418
return False
419
if not quiet:
420
self.send_changedstate()
421
if not quiet:
422
logger.info("Disabling client %s", self.name)
423
if getattr(self, "disable_initiator_tag", False):
424
gobject.source_remove(self.disable_initiator_tag)
425
self.disable_initiator_tag = None
426
self.expires = None
427
if getattr(self, "checker_initiator_tag", False):
428
gobject.source_remove(self.checker_initiator_tag)
429
self.checker_initiator_tag = None
430
self.stop_checker()
431
if self.disable_hook:
432
self.disable_hook(self)
433
self.enabled = False
434
# Do not run this again if called by a gobject.timeout_add
435
return False
436
437
def __del__(self):
438
self.disable_hook = None
439
self.disable()
440
625
441
def checker_callback(self, pid, condition, command):
626
442
"""The checker has completed, so take appropriate actions."""
627
443
self.checker_callback_tag = None
628
444
self.checker = None
629
445
if os.WIFEXITED(condition):
630
self.last_checker_status = os.WEXITSTATUS(condition)
631
if self.last_checker_status == 0:
446
exitstatus = os.WEXITSTATUS(condition)
447
if exitstatus == 0:
632
448
logger.info("Checker for %(name)s succeeded",
633
449
vars(self))
634
450
self.checked_ok()
636
452
logger.info("Checker for %(name)s failed",
637
453
vars(self))
638
454
else:
639
self.last_checker_status = -1
640
455
logger.warning("Checker for %(name)s crashed?",
641
456
vars(self))
642
457
643
def checked_ok(self):
644
"""Assert that the client has been seen, alive and well."""
645
self.last_checked_ok = datetime.datetime.utcnow()
646
self.last_checker_status = 0
647
self.bump_timeout()
648
649
def bump_timeout(self, timeout=None):
650
"""Bump up the timeout for this client."""
458
def checked_ok(self, timeout=None):
459
"""Bump up the timeout for this client.
460
461
This should only be called when the client has been seen,
462
alive and well.
463
"""
651
464
if timeout is None:
652
465
timeout = self.timeout
466
self.last_checked_ok = datetime.datetime.utcnow()
653
467
if self.disable_initiator_tag is not None:
654
468
gobject.source_remove(self.disable_initiator_tag)
655
self.disable_initiator_tag = None
656
469
if getattr(self, "enabled", False):
657
470
self.disable_initiator_tag = (gobject.timeout_add
658
(timedelta_to_milliseconds
471
(_timedelta_to_milliseconds
659
472
(timeout), self.disable))
660
473
self.expires = datetime.datetime.utcnow() + timeout
661
474
668
481
If a checker already exists, leave it running and do
669
482
nothing."""
670
483
# The reason for not killing a running checker is that if we
671
# did that, and if a checker (for some reason) started running
672
# slowly and taking more than 'interval' time, then the client
673
# would inevitably timeout, since no checker would get a
674
# chance to run to completion. If we instead leave running
484
# did that, then if a checker (for some reason) started
485
# running slowly and taking more than 'interval' time, the
486
# client would inevitably timeout, since no checker would get
487
# a chance to run to completion. If we instead leave running
675
488
# checkers alone, the checker would have to take more time
676
489
# than 'timeout' for the client to be disabled, which is as it
677
490
# should be.
691
504
self.current_checker_command)
692
505
# Start a new checker if needed
693
506
if self.checker is None:
694
# Escape attributes for the shell
695
escaped_attrs = dict(
696
(attr, re.escape(unicode(getattr(self, attr))))
697
for attr in
698
self.runtime_expansions)
699
507
try:
700
command = self.checker_command % escaped_attrs
701
except TypeError as error:
702
logger.error('Could not format string "%s"',
703
self.checker_command, exc_info=error)
704
return True # Try again later
508
# In case checker_command has exactly one % operator
509
command = self.checker_command % self.host
510
except TypeError:
511
# Escape attributes for the shell
512
escaped_attrs = dict(
513
(attr,
514
re.escape(unicode(str(getattr(self, attr, "")),
515
errors=
516
'replace')))
517
for attr in
518
self.runtime_expansions)
519
520
try:
521
command = self.checker_command % escaped_attrs
522
except TypeError as error:
523
logger.error('Could not format string "%s":'
524
' %s', self.checker_command, error)
525
return True # Try again later
705
526
self.current_checker_command = command
706
527
try:
707
528
logger.info("Starting checker %r for %s",
713
534
self.checker = subprocess.Popen(command,
714
535
close_fds=True,
715
536
shell=True, cwd="/")
537
self.checker_callback_tag = (gobject.child_watch_add
538
(self.checker.pid,
539
self.checker_callback,
540
data=command))
541
# The checker may have completed before the gobject
542
# watch was added. Check for this.
543
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
544
if pid:
545
gobject.source_remove(self.checker_callback_tag)
546
self.checker_callback(pid, status, command)
716
547
except OSError as error:
717
logger.error("Failed to start subprocess",
718
exc_info=error)
719
self.checker_callback_tag = (gobject.child_watch_add
720
(self.checker.pid,
721
self.checker_callback,
722
data=command))
723
# The checker may have completed before the gobject
724
# watch was added. Check for this.
725
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
726
if pid:
727
gobject.source_remove(self.checker_callback_tag)
728
self.checker_callback(pid, status, command)
548
logger.error("Failed to start subprocess: %s",
549
error)
729
550
# Re-run this periodically if run by gobject.timeout_add
730
551
return True
731
552
738
559
return
739
560
logger.debug("Stopping checker for %(name)s", vars(self))
740
561
try:
741
self.checker.terminate()
562
os.kill(self.checker.pid, signal.SIGTERM)
742
563
#time.sleep(0.5)
743
564
#if self.checker.poll() is None:
744
# self.checker.kill()
565
# os.kill(self.checker.pid, signal.SIGKILL)
745
566
except OSError as error:
746
567
if error.errno != errno.ESRCH: # No such process
747
568
raise
764
585
# "Set" method, so we fail early here:
765
586
if byte_arrays and signature != "ay":
766
587
raise ValueError("Byte arrays not supported for non-'ay'"
767
" signature {0!r}".format(signature))
588
" signature %r" % signature)
768
589
def decorator(func):
769
590
func._dbus_is_property = True
770
591
func._dbus_interface = dbus_interface
778
599
return decorator
779
600
780
601
781
def dbus_interface_annotations(dbus_interface):
782
"""Decorator for marking functions returning interface annotations
783
784
Usage:
785
786
@dbus_interface_annotations("org.example.Interface")
787
def _foo(self): # Function name does not matter
788
return {"org.freedesktop.DBus.Deprecated": "true",
789
"org.freedesktop.DBus.Property.EmitsChangedSignal":
790
"false"}
791
"""
792
def decorator(func):
793
func._dbus_is_interface = True
794
func._dbus_interface = dbus_interface
795
func._dbus_name = dbus_interface
796
return func
797
return decorator
798
799
800
def dbus_annotations(annotations):
801
"""Decorator to annotate D-Bus methods, signals or properties
802
Usage:
803
804
@dbus_service_property("org.example.Interface", signature="b",
805
access="r")
806
@dbus_annotations({{"org.freedesktop.DBus.Deprecated": "true",
807
"org.freedesktop.DBus.Property."
808
"EmitsChangedSignal": "false"})
809
def Property_dbus_property(self):
810
return dbus.Boolean(False)
811
"""
812
def decorator(func):
813
func._dbus_annotations = annotations
814
return func
815
return decorator
816
817
818
602
class DBusPropertyException(dbus.exceptions.DBusException):
819
603
"""A base class for D-Bus property-related exceptions
820
604
"""
843
627
"""
844
628
845
629
@staticmethod
846
def _is_dbus_thing(thing):
847
"""Returns a function testing if an attribute is a D-Bus thing
848
849
If called like _is_dbus_thing("method") it returns a function
850
suitable for use as predicate to inspect.getmembers().
851
"""
852
return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),
853
False)
630
def _is_dbus_property(obj):
631
return getattr(obj, "_dbus_is_property", False)
854
632
855
def _get_all_dbus_things(self, thing):
633
def _get_all_dbus_properties(self):
856
634
"""Returns a generator of (name, attribute) pairs
857
635
"""
858
return ((getattr(athing.__get__(self), "_dbus_name",
859
name),
860
athing.__get__(self))
636
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
861
637
for cls in self.__class__.__mro__
862
for name, athing in
863
inspect.getmembers(cls,
864
self._is_dbus_thing(thing)))
638
for name, prop in
639
inspect.getmembers(cls, self._is_dbus_property))
865
640
866
641
def _get_dbus_property(self, interface_name, property_name):
867
642
"""Returns a bound method if one exists which is a D-Bus
869
644
"""
870
645
for cls in self.__class__.__mro__:
871
646
for name, value in (inspect.getmembers
872
(cls,
873
self._is_dbus_thing("property"))):
647
(cls, self._is_dbus_property)):
874
648
if (value._dbus_name == property_name
875
649
and value._dbus_interface == interface_name):
876
650
return value.__get__(self)
905
679
# signatures other than "ay".
906
680
if prop._dbus_signature != "ay":
907
681
raise ValueError
908
value = dbus.ByteArray(b''.join(chr(byte)
909
for byte in value))
682
value = dbus.ByteArray(''.join(unichr(byte)
683
for byte in value))
910
684
prop(value)
911
685
912
686
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
917
691
918
692
Note: Will not include properties with access="write".
919
693
"""
920
properties = {}
921
for name, prop in self._get_all_dbus_things("property"):
694
all = {}
695
for name, prop in self._get_all_dbus_properties():
922
696
if (interface_name
923
697
and interface_name != prop._dbus_interface):
924
698
# Interface non-empty but did not match
928
702
continue
929
703
value = prop()
930
704
if not hasattr(value, "variant_level"):
931
properties[name] = value
705
all[name] = value
932
706
continue
933
properties[name] = type(value)(value, variant_level=
934
value.variant_level+1)
935
return dbus.Dictionary(properties, signature="sv")
707
all[name] = type(value)(value, variant_level=
708
value.variant_level+1)
709
return dbus.Dictionary(all, signature="sv")
936
710
937
711
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
938
712
out_signature="s",
939
713
path_keyword='object_path',
940
714
connection_keyword='connection')
941
715
def Introspect(self, object_path, connection):
942
"""Overloading of standard D-Bus method.
943
944
Inserts property tags and interface annotation tags.
716
"""Standard D-Bus method, overloaded to insert property tags.
945
717
"""
946
718
xmlstring = dbus.service.Object.Introspect(self, object_path,
947
719
connection)
954
726
e.setAttribute("access", prop._dbus_access)
955
727
return e
956
728
for if_tag in document.getElementsByTagName("interface"):
957
# Add property tags
958
729
for tag in (make_tag(document, name, prop)
959
730
for name, prop
960
in self._get_all_dbus_things("property")
731
in self._get_all_dbus_properties()
961
732
if prop._dbus_interface
962
733
== if_tag.getAttribute("name")):
963
734
if_tag.appendChild(tag)
964
# Add annotation tags
965
for typ in ("method", "signal", "property"):
966
for tag in if_tag.getElementsByTagName(typ):
967
annots = dict()
968
for name, prop in (self.
969
_get_all_dbus_things(typ)):
970
if (name == tag.getAttribute("name")
971
and prop._dbus_interface
972
== if_tag.getAttribute("name")):
973
annots.update(getattr
974
(prop,
975
"_dbus_annotations",
976
{}))
977
for name, value in annots.iteritems():
978
ann_tag = document.createElement(
979
"annotation")
980
ann_tag.setAttribute("name", name)
981
ann_tag.setAttribute("value", value)
982
tag.appendChild(ann_tag)
983
# Add interface annotation tags
984
for annotation, value in dict(
985
itertools.chain.from_iterable(
986
annotations().iteritems()
987
for name, annotations in
988
self._get_all_dbus_things("interface")
989
if name == if_tag.getAttribute("name")
990
)).iteritems():
991
ann_tag = document.createElement("annotation")
992
ann_tag.setAttribute("name", annotation)
993
ann_tag.setAttribute("value", value)
994
if_tag.appendChild(ann_tag)
995
735
# Add the names to the return values for the
996
736
# "org.freedesktop.DBus.Properties" methods
997
737
if (if_tag.getAttribute("name")
1012
752
except (AttributeError, xml.dom.DOMException,
1013
753
xml.parsers.expat.ExpatError) as error:
1014
754
logger.error("Failed to override Introspection method",
1015
exc_info=error)
755
error)
1016
756
return xmlstring
1017
757
1018
758
1019
def datetime_to_dbus(dt, variant_level=0):
759
def datetime_to_dbus (dt, variant_level=0):
1020
760
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1021
761
if dt is None:
1022
762
return dbus.String("", variant_level = variant_level)
1023
763
return dbus.String(dt.isoformat(),
1024
764
variant_level=variant_level)
1025
765
1026
1027
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1028
"""A class decorator; applied to a subclass of
1029
dbus.service.Object, it will add alternate D-Bus attributes with
1030
interface names according to the "alt_interface_names" mapping.
1031
Usage:
1032
1033
@alternate_dbus_interfaces({"org.example.Interface":
1034
"net.example.AlternateInterface"})
1035
class SampleDBusObject(dbus.service.Object):
1036
@dbus.service.method("org.example.Interface")
1037
def SampleDBusMethod():
1038
pass
1039
1040
The above "SampleDBusMethod" on "SampleDBusObject" will be
1041
reachable via two interfaces: "org.example.Interface" and
1042
"net.example.AlternateInterface", the latter of which will have
1043
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1044
"true", unless "deprecate" is passed with a False value.
1045
1046
This works for methods and signals, and also for D-Bus properties
1047
(from DBusObjectWithProperties) and interfaces (from the
1048
dbus_interface_annotations decorator).
766
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
767
.__metaclass__):
768
"""Applied to an empty subclass of a D-Bus object, this metaclass
769
will add additional D-Bus attributes matching a certain pattern.
1049
770
"""
1050
def wrapper(cls):
1051
for orig_interface_name, alt_interface_name in (
1052
alt_interface_names.iteritems()):
1053
attr = {}
1054
interface_names = set()
1055
# Go though all attributes of the class
1056
for attrname, attribute in inspect.getmembers(cls):
771
def __new__(mcs, name, bases, attr):
772
# Go through all the base classes which could have D-Bus
773
# methods, signals, or properties in them
774
for base in (b for b in bases
775
if issubclass(b, dbus.service.Object)):
776
# Go though all attributes of the base class
777
for attrname, attribute in inspect.getmembers(base):
1057
778
# Ignore non-D-Bus attributes, and D-Bus attributes
1058
779
# with the wrong interface name
1059
780
if (not hasattr(attribute, "_dbus_interface")
1060
781
or not attribute._dbus_interface
1061
.startswith(orig_interface_name)):
782
.startswith("se.recompile.Mandos")):
1062
783
continue
1063
784
# Create an alternate D-Bus interface name based on
1064
785
# the current name
1065
786
alt_interface = (attribute._dbus_interface
1066
.replace(orig_interface_name,
1067
alt_interface_name))
1068
interface_names.add(alt_interface)
787
.replace("se.recompile.Mandos",
788
"se.bsnet.fukt.Mandos"))
1069
789
# Is this a D-Bus signal?
1070
790
if getattr(attribute, "_dbus_is_signal", False):
1071
791
# Extract the original non-method function by
1086
806
nonmethod_func.func_name,
1087
807
nonmethod_func.func_defaults,
1088
808
nonmethod_func.func_closure)))
1089
# Copy annotations, if any
1090
try:
1091
new_function._dbus_annotations = (
1092
dict(attribute._dbus_annotations))
1093
except AttributeError:
1094
pass
1095
809
# Define a creator of a function to call both the
1096
# original and alternate functions, so both the
1097
# original and alternate signals gets sent when
1098
# the function is called
810
# old and new functions, so both the old and new
811
# signals gets sent when the function is called
1099
812
def fixscope(func1, func2):
1100
813
"""This function is a scope container to pass
1101
814
func1 and func2 to the "call_both" function
1108
821
return call_both
1109
822
# Create the "call_both" function and add it to
1110
823
# the class
1111
attr[attrname] = fixscope(attribute, new_function)
824
attr[attrname] = fixscope(attribute,
825
new_function)
1112
826
# Is this a D-Bus method?
1113
827
elif getattr(attribute, "_dbus_is_method", False):
1114
828
# Create a new, but exactly alike, function
1125
839
attribute.func_name,
1126
840
attribute.func_defaults,
1127
841
attribute.func_closure)))
1128
# Copy annotations, if any
1129
try:
1130
attr[attrname]._dbus_annotations = (
1131
dict(attribute._dbus_annotations))
1132
except AttributeError:
1133
pass
1134
842
# Is this a D-Bus property?
1135
843
elif getattr(attribute, "_dbus_is_property", False):
1136
844
# Create a new, but exactly alike, function
1150
858
attribute.func_name,
1151
859
attribute.func_defaults,
1152
860
attribute.func_closure)))
1153
# Copy annotations, if any
1154
try:
1155
attr[attrname]._dbus_annotations = (
1156
dict(attribute._dbus_annotations))
1157
except AttributeError:
1158
pass
1159
# Is this a D-Bus interface?
1160
elif getattr(attribute, "_dbus_is_interface", False):
1161
# Create a new, but exactly alike, function
1162
# object. Decorate it to be a new D-Bus interface
1163
# with the alternate D-Bus interface name. Add it
1164
# to the class.
1165
attr[attrname] = (dbus_interface_annotations
1166
(alt_interface)
1167
(types.FunctionType
1168
(attribute.func_code,
1169
attribute.func_globals,
1170
attribute.func_name,
1171
attribute.func_defaults,
1172
attribute.func_closure)))
1173
if deprecate:
1174
# Deprecate all alternate interfaces
1175
iname="_AlternateDBusNames_interface_annotation{0}"
1176
for interface_name in interface_names:
1177
@dbus_interface_annotations(interface_name)
1178
def func(self):
1179
return { "org.freedesktop.DBus.Deprecated":
1180
"true" }
1181
# Find an unused name
1182
for aname in (iname.format(i)
1183
for i in itertools.count()):
1184
if aname not in attr:
1185
attr[aname] = func
1186
break
1187
if interface_names:
1188
# Replace the class with a new subclass of it with
1189
# methods, signals, etc. as created above.
1190
cls = type(b"{0}Alternate".format(cls.__name__),
1191
(cls,), attr)
1192
return cls
1193
return wrapper
1194
1195
1196
@alternate_dbus_interfaces({"se.recompile.Mandos":
1197
"se.bsnet.fukt.Mandos"})
861
return type.__new__(mcs, name, bases, attr)
862
1198
863
class ClientDBus(Client, DBusObjectWithProperties):
1199
864
"""A Client class using D-Bus
1200
865
1209
874
# dbus.service.Object doesn't use super(), so we can't either.
1210
875
1211
876
def __init__(self, bus = None, *args, **kwargs):
877
self._approvals_pending = 0
1212
878
self.bus = bus
1213
879
Client.__init__(self, *args, **kwargs)
1214
880
# Only now, when this client is initialized, can it show up on
1220
886
("/clients/" + client_object_name))
1221
887
DBusObjectWithProperties.__init__(self, self.bus,
1222
888
self.dbus_object_path)
1223
889
1224
890
def notifychangeproperty(transform_func,
1225
891
dbus_name, type_func=lambda x: x,
1226
892
variant_level=1):
1227
893
""" Modify a variable so that it's a property which announces
1228
894
its changes to DBus.
1229
895
1230
896
transform_fun: Function that takes a value and a variant_level
1231
897
and transforms it to a D-Bus type.
1232
898
dbus_name: D-Bus name of the variable
1249
915
1250
916
return property(lambda self: getattr(self, attrname), setter)
1251
917
918
1252
919
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1253
920
approvals_pending = notifychangeproperty(dbus.Boolean,
1254
921
"ApprovalPending",
1261
928
checker is not None)
1262
929
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1263
930
"LastCheckedOK")
1264
last_checker_status = notifychangeproperty(dbus.Int16,
1265
"LastCheckerStatus")
1266
931
last_approval_request = notifychangeproperty(
1267
932
datetime_to_dbus, "LastApprovalRequest")
1268
933
approved_by_default = notifychangeproperty(dbus.Boolean,
1269
934
"ApprovedByDefault")
1270
approval_delay = notifychangeproperty(dbus.UInt64,
935
approval_delay = notifychangeproperty(dbus.UInt16,
1271
936
"ApprovalDelay",
1272
937
type_func =
1273
timedelta_to_milliseconds)
938
_timedelta_to_milliseconds)
1274
939
approval_duration = notifychangeproperty(
1275
dbus.UInt64, "ApprovalDuration",
1276
type_func = timedelta_to_milliseconds)
940
dbus.UInt16, "ApprovalDuration",
941
type_func = _timedelta_to_milliseconds)
1277
942
host = notifychangeproperty(dbus.String, "Host")
1278
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
943
timeout = notifychangeproperty(dbus.UInt16, "Timeout",
1279
944
type_func =
1280
timedelta_to_milliseconds)
945
_timedelta_to_milliseconds)
1281
946
extended_timeout = notifychangeproperty(
1282
dbus.UInt64, "ExtendedTimeout",
1283
type_func = timedelta_to_milliseconds)
1284
interval = notifychangeproperty(dbus.UInt64,
947
dbus.UInt16, "ExtendedTimeout",
948
type_func = _timedelta_to_milliseconds)
949
interval = notifychangeproperty(dbus.UInt16,
1285
950
"Interval",
1286
951
type_func =
1287
timedelta_to_milliseconds)
952
_timedelta_to_milliseconds)
1288
953
checker_command = notifychangeproperty(dbus.String, "Checker")
1289
954
1290
955
del notifychangeproperty
1332
997
return r
1333
998
1334
999
def _reset_approved(self):
1335
self.approved = None
1000
self._approved = None
1336
1001
return False
1337
1002
1338
1003
def approve(self, value=True):
1339
self.approved = value
1340
gobject.timeout_add(timedelta_to_milliseconds
1004
self.send_changedstate()
1005
self._approved = value
1006
gobject.timeout_add(_timedelta_to_milliseconds
1341
1007
(self.approval_duration),
1342
1008
self._reset_approved)
1343
self.send_changedstate()
1009
1344
1010
1345
1011
## D-Bus methods, signals & properties
1346
1012
_interface = "se.recompile.Mandos.Client"
1347
1013
1348
## Interfaces
1349
1350
@dbus_interface_annotations(_interface)
1351
def _foo(self):
1352
return { "org.freedesktop.DBus.Property.EmitsChangedSignal":
1353
"false"}
1354
1355
1014
## Signals
1356
1015
1357
1016
# CheckerCompleted - signal
1456
1115
access="readwrite")
1457
1116
def ApprovalDuration_dbus_property(self, value=None):
1458
1117
if value is None: # get
1459
return dbus.UInt64(timedelta_to_milliseconds(
1118
return dbus.UInt64(_timedelta_to_milliseconds(
1460
1119
self.approval_duration))
1461
1120
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1462
1121
1476
1135
def Host_dbus_property(self, value=None):
1477
1136
if value is None: # get
1478
1137
return dbus.String(self.host)
1479
self.host = unicode(value)
1138
self.host = value
1480
1139
1481
1140
# Created - property
1482
1141
@dbus_service_property(_interface, signature="s", access="read")
1483
1142
def Created_dbus_property(self):
1484
return datetime_to_dbus(self.created)
1143
return dbus.String(datetime_to_dbus(self.created))
1485
1144
1486
1145
# LastEnabled - property
1487
1146
@dbus_service_property(_interface, signature="s", access="read")
1508
1167
return
1509
1168
return datetime_to_dbus(self.last_checked_ok)
1510
1169
1511
# LastCheckerStatus - property
1512
@dbus_service_property(_interface, signature="n",
1513
access="read")
1514
def LastCheckerStatus_dbus_property(self):
1515
return dbus.Int16(self.last_checker_status)
1516
1517
1170
# Expires - property
1518
1171
@dbus_service_property(_interface, signature="s", access="read")
1519
1172
def Expires_dbus_property(self):
1530
1183
def Timeout_dbus_property(self, value=None):
1531
1184
if value is None: # get
1532
1185
return dbus.UInt64(self.timeout_milliseconds())
1533
old_timeout = self.timeout
1534
1186
self.timeout = datetime.timedelta(0, 0, 0, value)
1535
# Reschedule disabling
1536
if self.enabled:
1537
now = datetime.datetime.utcnow()
1538
self.expires += self.timeout - old_timeout
1539
if self.expires <= now:
1540
# The timeout has passed
1541
self.disable()
1542
else:
1543
if (getattr(self, "disable_initiator_tag", None)
1544
is None):
1545
return
1546
gobject.source_remove(self.disable_initiator_tag)
1547
self.disable_initiator_tag = (
1548
gobject.timeout_add(
1549
timedelta_to_milliseconds(self.expires - now),
1550
self.disable))
1187
if getattr(self, "disable_initiator_tag", None) is None:
1188
return
1189
# Reschedule timeout
1190
gobject.source_remove(self.disable_initiator_tag)
1191
self.disable_initiator_tag = None
1192
self.expires = None
1193
time_to_die = _timedelta_to_milliseconds((self
1194
.last_checked_ok
1195
+ self.timeout)
1196
- datetime.datetime
1197
.utcnow())
1198
if time_to_die <= 0:
1199
# The timeout has passed
1200
self.disable()
1201
else:
1202
self.expires = (datetime.datetime.utcnow()
1203
+ datetime.timedelta(milliseconds =
1204
time_to_die))
1205
self.disable_initiator_tag = (gobject.timeout_add
1206
(time_to_die, self.disable))
1551
1207
1552
1208
# ExtendedTimeout - property
1553
1209
@dbus_service_property(_interface, signature="t",
1566
1222
self.interval = datetime.timedelta(0, 0, 0, value)
1567
1223
if getattr(self, "checker_initiator_tag", None) is None:
1568
1224
return
1569
if self.enabled:
1570
# Reschedule checker run
1571
gobject.source_remove(self.checker_initiator_tag)
1572
self.checker_initiator_tag = (gobject.timeout_add
1573
(value, self.start_checker))
1574
self.start_checker() # Start one now, too
1225
# Reschedule checker run
1226
gobject.source_remove(self.checker_initiator_tag)
1227
self.checker_initiator_tag = (gobject.timeout_add
1228
(value, self.start_checker))
1229
self.start_checker() # Start one now, too
1575
1230
1576
1231
# Checker - property
1577
1232
@dbus_service_property(_interface, signature="s",
1579
1234
def Checker_dbus_property(self, value=None):
1580
1235
if value is None: # get
1581
1236
return dbus.String(self.checker_command)
1582
self.checker_command = unicode(value)
1237
self.checker_command = value
1583
1238
1584
1239
# CheckerRunning - property
1585
1240
@dbus_service_property(_interface, signature="b",
1614
1269
raise KeyError()
1615
1270
1616
1271
def __getattribute__(self, name):
1617
if name == '_pipe':
1272
if(name == '_pipe'):
1618
1273
return super(ProxyClient, self).__getattribute__(name)
1619
1274
self._pipe.send(('getattr', name))
1620
1275
data = self._pipe.recv()
1627
1282
return func
1628
1283
1629
1284
def __setattr__(self, name, value):
1630
if name == '_pipe':
1285
if(name == '_pipe'):
1631
1286
return super(ProxyClient, self).__setattr__(name, value)
1632
1287
self._pipe.send(('setattr', name, value))
1633
1288
1289
class ClientDBusTransitional(ClientDBus):
1290
__metaclass__ = AlternateDBusNamesMetaclass
1634
1291
1635
1292
class ClientHandler(socketserver.BaseRequestHandler, object):
1636
1293
"""A class to handle client connections.
1719
1376
client.Rejected("Disabled")
1720
1377
return
1721
1378
1722
if client.approved or not client.approval_delay:
1379
if client._approved or not client.approval_delay:
1723
1380
#We are approved or approval is disabled
1724
1381
break
1725
elif client.approved is None:
1382
elif client._approved is None:
1726
1383
logger.info("Client %s needs approval",
1727
1384
client.name)
1728
1385
if self.server.use_dbus:
1741
1398
#wait until timeout or approved
1742
1399
time = datetime.datetime.now()
1743
1400
client.changedstate.acquire()
1744
client.changedstate.wait(
1745
float(timedelta_to_milliseconds(delay)
1746
/ 1000))
1401
(client.changedstate.wait
1402
(float(client._timedelta_to_milliseconds(delay)
1403
/ 1000)))
1747
1404
client.changedstate.release()
1748
1405
time2 = datetime.datetime.now()
1749
1406
if (time2 - time) >= delay:
1765
1422
try:
1766
1423
sent = session.send(client.secret[sent_size:])
1767
1424
except gnutls.errors.GNUTLSError as error:
1768
logger.warning("gnutls send failed",
1769
exc_info=error)
1425
logger.warning("gnutls send failed")
1770
1426
return
1771
1427
logger.debug("Sent: %d, remaining: %d",
1772
1428
sent, len(client.secret)
1775
1431
1776
1432
logger.info("Sending secret to %s", client.name)
1777
1433
# bump the timeout using extended_timeout
1778
client.bump_timeout(client.extended_timeout)
1434
client.checked_ok(client.extended_timeout)
1779
1435
if self.server.use_dbus:
1780
1436
# Emit D-Bus signal
1781
1437
client.GotSecret()
1786
1442
try:
1787
1443
session.bye()
1788
1444
except gnutls.errors.GNUTLSError as error:
1789
logger.warning("GnuTLS bye failed",
1790
exc_info=error)
1445
logger.warning("GnuTLS bye failed")
1791
1446
1792
1447
@staticmethod
1793
1448
def peer_certificate(session):
1849
1504
# Convert the buffer to a Python bytestring
1850
1505
fpr = ctypes.string_at(buf, buf_len.value)
1851
1506
# Convert the bytestring to hexadecimal notation
1852
hex_fpr = binascii.hexlify(fpr).upper()
1507
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
1853
1508
return hex_fpr
1854
1509
1855
1510
1858
1513
def sub_process_main(self, request, address):
1859
1514
try:
1860
1515
self.finish_request(request, address)
1861
except Exception:
1516
except:
1862
1517
self.handle_error(request, address)
1863
1518
self.close_request(request)
1864
1519
1865
1520
def process_request(self, request, address):
1866
1521
"""Start a new process to process the request."""
1867
1522
proc = multiprocessing.Process(target = self.sub_process_main,
1868
args = (request, address))
1523
args = (request,
1524
address))
1869
1525
proc.start()
1870
1526
return proc
1871
1527
1899
1555
use_ipv6: Boolean; to use IPv6 or not
1900
1556
"""
1901
1557
def __init__(self, server_address, RequestHandlerClass,
1902
interface=None, use_ipv6=True, socketfd=None):
1903
"""If socketfd is set, use that file descriptor instead of
1904
creating a new one with socket.socket().
1905
"""
1558
interface=None, use_ipv6=True):
1906
1559
self.interface = interface
1907
1560
if use_ipv6:
1908
1561
self.address_family = socket.AF_INET6
1909
if socketfd is not None:
1910
# Save the file descriptor
1911
self.socketfd = socketfd
1912
# Save the original socket.socket() function
1913
self.socket_socket = socket.socket
1914
# To implement --socket, we monkey patch socket.socket.
1915
#
1916
# (When socketserver.TCPServer is a new-style class, we
1917
# could make self.socket into a property instead of monkey
1918
# patching socket.socket.)
1919
#
1920
# Create a one-time-only replacement for socket.socket()
1921
@functools.wraps(socket.socket)
1922
def socket_wrapper(*args, **kwargs):
1923
# Restore original function so subsequent calls are
1924
# not affected.
1925
socket.socket = self.socket_socket
1926
del self.socket_socket
1927
# This time only, return a new socket object from the
1928
# saved file descriptor.
1929
return socket.fromfd(self.socketfd, *args, **kwargs)
1930
# Replace socket.socket() function with wrapper
1931
socket.socket = socket_wrapper
1932
# The socketserver.TCPServer.__init__ will call
1933
# socket.socket(), which might be our replacement,
1934
# socket_wrapper(), if socketfd was set.
1935
1562
socketserver.TCPServer.__init__(self, server_address,
1936
1563
RequestHandlerClass)
1937
1938
1564
def server_bind(self):
1939
1565
"""This overrides the normal server_bind() function
1940
1566
to bind to an interface if one was specified, and also NOT to
1948
1574
try:
1949
1575
self.socket.setsockopt(socket.SOL_SOCKET,
1950
1576
SO_BINDTODEVICE,
1951
str(self.interface + '\0'))
1577
str(self.interface
1578
+ '\0'))
1952
1579
except socket.error as error:
1953
if error.errno == errno.EPERM:
1954
logger.error("No permission to bind to"
1955
" interface %s", self.interface)
1956
elif error.errno == errno.ENOPROTOOPT:
1580
if error[0] == errno.EPERM:
1581
logger.error("No permission to"
1582
" bind to interface %s",
1583
self.interface)
1584
elif error[0] == errno.ENOPROTOOPT:
1957
1585
logger.error("SO_BINDTODEVICE not available;"
1958
1586
" cannot bind to interface %s",
1959
1587
self.interface)
1960
elif error.errno == errno.ENODEV:
1961
logger.error("Interface %s does not exist,"
1962
" cannot bind", self.interface)
1963
1588
else:
1964
1589
raise
1965
1590
# Only bind(2) the socket if we really need to.
1995
1620
"""
1996
1621
def __init__(self, server_address, RequestHandlerClass,
1997
1622
interface=None, use_ipv6=True, clients=None,
1998
gnutls_priority=None, use_dbus=True, socketfd=None):
1623
gnutls_priority=None, use_dbus=True):
1999
1624
self.enabled = False
2000
1625
self.clients = clients
2001
1626
if self.clients is None:
2002
self.clients = {}
1627
self.clients = set()
2003
1628
self.use_dbus = use_dbus
2004
1629
self.gnutls_priority = gnutls_priority
2005
1630
IPv6_TCPServer.__init__(self, server_address,
2006
1631
RequestHandlerClass,
2007
1632
interface = interface,
2008
use_ipv6 = use_ipv6,
2009
socketfd = socketfd)
1633
use_ipv6 = use_ipv6)
2010
1634
def server_activate(self):
2011
1635
if self.enabled:
2012
1636
return socketserver.TCPServer.server_activate(self)
2025
1649
2026
1650
def handle_ipc(self, source, condition, parent_pipe=None,
2027
1651
proc = None, client_object=None):
1652
condition_names = {
1653
gobject.IO_IN: "IN", # There is data to read.
1654
gobject.IO_OUT: "OUT", # Data can be written (without
1655
# blocking).
1656
gobject.IO_PRI: "PRI", # There is urgent data to read.
1657
gobject.IO_ERR: "ERR", # Error condition.
1658
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1659
# broken, usually for pipes and
1660
# sockets).
1661
}
1662
conditions_string = ' | '.join(name
1663
for cond, name in
1664
condition_names.iteritems()
1665
if cond & condition)
2028
1666
# error, or the other end of multiprocessing.Pipe has closed
2029
if condition & (gobject.IO_ERR | gobject.IO_HUP):
1667
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2030
1668
# Wait for other process to exit
2031
1669
proc.join()
2032
1670
return False
2039
1677
fpr = request[1]
2040
1678
address = request[2]
2041
1679
2042
for c in self.clients.itervalues():
1680
for c in self.clients:
2043
1681
if c.fingerprint == fpr:
2044
1682
client = c
2045
1683
break
2122
1760
elif suffix == "w":
2123
1761
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2124
1762
else:
2125
raise ValueError("Unknown suffix {0!r}"
2126
.format(suffix))
1763
raise ValueError("Unknown suffix %r" % suffix)
2127
1764
except (ValueError, IndexError) as e:
2128
1765
raise ValueError(*(e.args))
2129
1766
timevalue += delta
2130
1767
return timevalue
2131
1768
2132
1769
1770
def if_nametoindex(interface):
1771
"""Call the C function if_nametoindex(), or equivalent
1772
1773
Note: This function cannot accept a unicode string."""
1774
global if_nametoindex
1775
try:
1776
if_nametoindex = (ctypes.cdll.LoadLibrary
1777
(ctypes.util.find_library("c"))
1778
.if_nametoindex)
1779
except (OSError, AttributeError):
1780
logger.warning("Doing if_nametoindex the hard way")
1781
def if_nametoindex(interface):
1782
"Get an interface index the hard way, i.e. using fcntl()"
1783
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1784
with contextlib.closing(socket.socket()) as s:
1785
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1786
struct.pack(str("16s16x"),
1787
interface))
1788
interface_index = struct.unpack(str("I"),
1789
ifreq[16:20])[0]
1790
return interface_index
1791
return if_nametoindex(interface)
1792
1793
2133
1794
def daemon(nochdir = False, noclose = False):
2134
1795
"""See daemon(3). Standard BSD Unix function.
2135
1796
2143
1804
sys.exit()
2144
1805
if not noclose:
2145
1806
# Close all standard open file descriptors
2146
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1807
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2147
1808
if not stat.S_ISCHR(os.fstat(null).st_mode):
2148
1809
raise OSError(errno.ENODEV,
2149
"{0} not a character device"
2150
.format(os.devnull))
1810
"%s not a character device"
1811
% os.path.devnull)
2151
1812
os.dup2(null, sys.stdin.fileno())
2152
1813
os.dup2(null, sys.stdout.fileno())
2153
1814
os.dup2(null, sys.stderr.fileno())
2162
1823
2163
1824
parser = argparse.ArgumentParser()
2164
1825
parser.add_argument("-v", "--version", action="version",
2165
version = "%(prog)s {0}".format(version),
1826
version = "%%(prog)s %s" % version,
2166
1827
help="show version number and exit")
2167
1828
parser.add_argument("-i", "--interface", metavar="IF",
2168
1829
help="Bind to interface IF")
2190
1851
" system bus interface")
2191
1852
parser.add_argument("--no-ipv6", action="store_false",
2192
1853
dest="use_ipv6", help="Do not use IPv6")
2193
parser.add_argument("--no-restore", action="store_false",
2194
dest="restore", help="Do not restore stored"
2195
" state")
2196
parser.add_argument("--socket", type=int,
2197
help="Specify a file descriptor to a network"
2198
" socket to use instead of creating one")
2199
parser.add_argument("--statedir", metavar="DIR",
2200
help="Directory to save/restore state in")
2201
parser.add_argument("--foreground", action="store_true",
2202
help="Run in foreground")
2203
2204
1854
options = parser.parse_args()
2205
1855
2206
1856
if options.check:
2219
1869
"use_dbus": "True",
2220
1870
"use_ipv6": "True",
2221
1871
"debuglevel": "",
2222
"restore": "True",
2223
"socket": "",
2224
"statedir": "/var/lib/mandos",
2225
"foreground": "False",
2226
1872
}
2227
1873
2228
1874
# Parse config file for server-global settings
2233
1879
# Convert the SafeConfigParser object to a dict
2234
1880
server_settings = server_config.defaults()
2235
1881
# Use the appropriate methods on the non-string config options
2236
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
1882
for option in ("debug", "use_dbus", "use_ipv6"):
2237
1883
server_settings[option] = server_config.getboolean("DEFAULT",
2238
1884
option)
2239
1885
if server_settings["port"]:
2240
1886
server_settings["port"] = server_config.getint("DEFAULT",
2241
1887
"port")
2242
if server_settings["socket"]:
2243
server_settings["socket"] = server_config.getint("DEFAULT",
2244
"socket")
2245
# Later, stdin will, and stdout and stderr might, be dup'ed
2246
# over with an opened os.devnull. But we don't want this to
2247
# happen with a supplied network socket.
2248
if 0 <= server_settings["socket"] <= 2:
2249
server_settings["socket"] = os.dup(server_settings
2250
["socket"])
2251
1888
del server_config
2252
1889
2253
1890
# Override the settings from the config file with command line
2254
1891
# options, if set.
2255
1892
for option in ("interface", "address", "port", "debug",
2256
1893
"priority", "servicename", "configdir",
2257
"use_dbus", "use_ipv6", "debuglevel", "restore",
2258
"statedir", "socket", "foreground"):
1894
"use_dbus", "use_ipv6", "debuglevel"):
2259
1895
value = getattr(options, option)
2260
1896
if value is not None:
2261
1897
server_settings[option] = value
2264
1900
for option in server_settings.keys():
2265
1901
if type(server_settings[option]) is str:
2266
1902
server_settings[option] = unicode(server_settings[option])
2267
# Debug implies foreground
2268
if server_settings["debug"]:
2269
server_settings["foreground"] = True
2270
1903
# Now we have our good server settings in "server_settings"
2271
1904
2272
1905
##################################################################
2276
1909
debuglevel = server_settings["debuglevel"]
2277
1910
use_dbus = server_settings["use_dbus"]
2278
1911
use_ipv6 = server_settings["use_ipv6"]
2279
stored_state_path = os.path.join(server_settings["statedir"],
2280
stored_state_file)
2281
foreground = server_settings["foreground"]
2282
2283
if debug:
2284
initlogger(debug, logging.DEBUG)
2285
else:
2286
if not debuglevel:
2287
initlogger(debug)
2288
else:
2289
level = getattr(logging, debuglevel.upper())
2290
initlogger(debug, level)
2291
1912
2292
1913
if server_settings["servicename"] != "Mandos":
2293
1914
syslogger.setFormatter(logging.Formatter
2294
('Mandos ({0}) [%(process)d]:'
2295
' %(levelname)s: %(message)s'
2296
.format(server_settings
2297
["servicename"])))
1915
('Mandos (%s) [%%(process)d]:'
1916
' %%(levelname)s: %%(message)s'
1917
% server_settings["servicename"]))
2298
1918
2299
1919
# Parse config file with clients
2300
client_config = configparser.SafeConfigParser(Client
2301
.client_defaults)
1920
client_defaults = { "timeout": "5m",
1921
"extended_timeout": "15m",
1922
"interval": "2m",
1923
"checker": "fping -q -- %%(host)s",
1924
"host": "",
1925
"approval_delay": "0s",
1926
"approval_duration": "1s",
1927
}
1928
client_config = configparser.SafeConfigParser(client_defaults)
2302
1929
client_config.read(os.path.join(server_settings["configdir"],
2303
1930
"clients.conf"))
2304
1931
2313
1940
use_ipv6=use_ipv6,
2314
1941
gnutls_priority=
2315
1942
server_settings["priority"],
2316
use_dbus=use_dbus,
2317
socketfd=(server_settings["socket"]
2318
or None))
2319
if not foreground:
1943
use_dbus=use_dbus)
1944
if not debug:
2320
1945
pidfilename = "/var/run/mandos.pid"
2321
pidfile = None
2322
1946
try:
2323
1947
pidfile = open(pidfilename, "w")
2324
except IOError as e:
2325
logger.error("Could not open file %r", pidfilename,
2326
exc_info=e)
1948
except IOError:
1949
logger.error("Could not open file %r", pidfilename)
2327
1950
2328
for name in ("_mandos", "mandos", "nobody"):
1951
try:
1952
uid = pwd.getpwnam("_mandos").pw_uid
1953
gid = pwd.getpwnam("_mandos").pw_gid
1954
except KeyError:
2329
1955
try:
2330
uid = pwd.getpwnam(name).pw_uid
2331
gid = pwd.getpwnam(name).pw_gid
2332
break
1956
uid = pwd.getpwnam("mandos").pw_uid
1957
gid = pwd.getpwnam("mandos").pw_gid
2333
1958
except KeyError:
2334
continue
2335
else:
2336
uid = 65534
2337
gid = 65534
1959
try:
1960
uid = pwd.getpwnam("nobody").pw_uid
1961
gid = pwd.getpwnam("nobody").pw_gid
1962
except KeyError:
1963
uid = 65534
1964
gid = 65534
2338
1965
try:
2339
1966
os.setgid(gid)
2340
1967
os.setuid(uid)
2341
1968
except OSError as error:
2342
if error.errno != errno.EPERM:
1969
if error[0] != errno.EPERM:
2343
1970
raise error
2344
1971
1972
if not debug and not debuglevel:
1973
syslogger.setLevel(logging.WARNING)
1974
console.setLevel(logging.WARNING)
1975
if debuglevel:
1976
level = getattr(logging, debuglevel.upper())
1977
syslogger.setLevel(level)
1978
console.setLevel(level)
1979
2345
1980
if debug:
2346
1981
# Enable all possible GnuTLS debugging
2347
1982
2357
1992
.gnutls_global_set_log_function(debug_gnutls))
2358
1993
2359
1994
# Redirect stdin so all checkers get /dev/null
2360
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1995
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2361
1996
os.dup2(null, sys.stdin.fileno())
2362
1997
if null > 2:
2363
1998
os.close(null)
1999
else:
2000
# No console logging
2001
logger.removeHandler(console)
2364
2002
2365
2003
# Need to fork before connecting to D-Bus
2366
if not foreground:
2004
if not debug:
2367
2005
# Close all input and output, do double fork, etc.
2368
2006
daemon()
2369
2007
2370
# multiprocessing will use threads, so before we use gobject we
2371
# need to inform gobject that threads will be used.
2372
gobject.threads_init()
2373
2374
2008
global main_loop
2375
2009
# From the Avahi example code
2376
DBusGMainLoop(set_as_default=True)
2010
DBusGMainLoop(set_as_default=True )
2377
2011
main_loop = gobject.MainLoop()
2378
2012
bus = dbus.SystemBus()
2379
2013
# End of Avahi example code
2385
2019
("se.bsnet.fukt.Mandos", bus,
2386
2020
do_not_queue=True))
2387
2021
except dbus.exceptions.NameExistsException as e:
2388
logger.error("Disabling D-Bus:", exc_info=e)
2022
logger.error(unicode(e) + ", disabling D-Bus")
2389
2023
use_dbus = False
2390
2024
server_settings["use_dbus"] = False
2391
2025
tcp_server.use_dbus = False
2392
2026
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2393
service = AvahiServiceToSyslog(name =
2394
server_settings["servicename"],
2395
servicetype = "_mandos._tcp",
2396
protocol = protocol, bus = bus)
2027
service = AvahiService(name = server_settings["servicename"],
2028
servicetype = "_mandos._tcp",
2029
protocol = protocol, bus = bus)
2397
2030
if server_settings["interface"]:
2398
2031
service.interface = (if_nametoindex
2399
2032
(str(server_settings["interface"])))
2403
2036
2404
2037
client_class = Client
2405
2038
if use_dbus:
2406
client_class = functools.partial(ClientDBus, bus = bus)
2407
2408
client_settings = Client.config_parser(client_config)
2409
old_client_settings = {}
2410
clients_data = {}
2411
2412
# Get client data and settings from last running state.
2413
if server_settings["restore"]:
2414
try:
2415
with open(stored_state_path, "rb") as stored_state:
2416
clients_data, old_client_settings = (pickle.load
2417
(stored_state))
2418
os.remove(stored_state_path)
2419
except IOError as e:
2420
if e.errno == errno.ENOENT:
2421
logger.warning("Could not load persistent state: {0}"
2422
.format(os.strerror(e.errno)))
2423
else:
2424
logger.critical("Could not load persistent state:",
2425
exc_info=e)
2426
raise
2427
except EOFError as e:
2428
logger.warning("Could not load persistent state: "
2429
"EOFError:", exc_info=e)
2430
2431
with PGPEngine() as pgp:
2432
for client_name, client in clients_data.iteritems():
2433
# Decide which value to use after restoring saved state.
2434
# We have three different values: Old config file,
2435
# new config file, and saved state.
2436
# New config value takes precedence if it differs from old
2437
# config value, otherwise use saved state.
2438
for name, value in client_settings[client_name].items():
2439
try:
2440
# For each value in new config, check if it
2441
# differs from the old config value (Except for
2442
# the "secret" attribute)
2443
if (name != "secret" and
2444
value != old_client_settings[client_name]
2445
[name]):
2446
client[name] = value
2447
except KeyError:
2448
pass
2449
2450
# Clients who has passed its expire date can still be
2451
# enabled if its last checker was successful. Clients
2452
# whose checker succeeded before we stored its state is
2453
# assumed to have successfully run all checkers during
2454
# downtime.
2455
if client["enabled"]:
2456
if datetime.datetime.utcnow() >= client["expires"]:
2457
if not client["last_checked_ok"]:
2458
logger.warning(
2459
"disabling client {0} - Client never "
2460
"performed a successful checker"
2461
.format(client_name))
2462
client["enabled"] = False
2463
elif client["last_checker_status"] != 0:
2464
logger.warning(
2465
"disabling client {0} - Client "
2466
"last checker failed with error code {1}"
2467
.format(client_name,
2468
client["last_checker_status"]))
2469
client["enabled"] = False
2470
else:
2471
client["expires"] = (datetime.datetime
2472
.utcnow()
2473
+ client["timeout"])
2474
logger.debug("Last checker succeeded,"
2475
" keeping {0} enabled"
2476
.format(client_name))
2039
client_class = functools.partial(ClientDBusTransitional,
2040
bus = bus)
2041
def client_config_items(config, section):
2042
special_settings = {
2043
"approved_by_default":
2044
lambda: config.getboolean(section,
2045
"approved_by_default"),
2046
}
2047
for name, value in config.items(section):
2477
2048
try:
2478
client["secret"] = (
2479
pgp.decrypt(client["encrypted_secret"],
2480
client_settings[client_name]
2481
["secret"]))
2482
except PGPError:
2483
# If decryption fails, we use secret from new settings
2484
logger.debug("Failed to decrypt {0} old secret"
2485
.format(client_name))
2486
client["secret"] = (
2487
client_settings[client_name]["secret"])
2488
2489
# Add/remove clients based on new changes made to config
2490
for client_name in (set(old_client_settings)
2491
- set(client_settings)):
2492
del clients_data[client_name]
2493
for client_name in (set(client_settings)
2494
- set(old_client_settings)):
2495
clients_data[client_name] = client_settings[client_name]
2496
2497
# Create all client objects
2498
for client_name, client in clients_data.iteritems():
2499
tcp_server.clients[client_name] = client_class(
2500
name = client_name, settings = client)
2501
2049
yield (name, special_settings[name]())
2050
except KeyError:
2051
yield (name, value)
2052
2053
tcp_server.clients.update(set(
2054
client_class(name = section,
2055
config= dict(client_config_items(
2056
client_config, section)))
2057
for section in client_config.sections()))
2502
2058
if not tcp_server.clients:
2503
2059
logger.warning("No clients defined")
2504
2505
if not foreground:
2506
if pidfile is not None:
2507
try:
2508
with pidfile:
2509
pid = os.getpid()
2510
pidfile.write(str(pid) + "\n".encode("utf-8"))
2511
except IOError:
2512
logger.error("Could not write to file %r with PID %d",
2513
pidfilename, pid)
2514
del pidfile
2060
2061
if not debug:
2062
try:
2063
with pidfile:
2064
pid = os.getpid()
2065
pidfile.write(str(pid) + "\n".encode("utf-8"))
2066
del pidfile
2067
except IOError:
2068
logger.error("Could not write to file %r with PID %d",
2069
pidfilename, pid)
2070
except NameError:
2071
# "pidfile" was never created
2072
pass
2515
2073
del pidfilename
2074
2075
signal.signal(signal.SIGINT, signal.SIG_IGN)
2516
2076
2517
2077
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2518
2078
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2519
2079
2520
2080
if use_dbus:
2521
@alternate_dbus_interfaces({"se.recompile.Mandos":
2522
"se.bsnet.fukt.Mandos"})
2523
class MandosDBusService(DBusObjectWithProperties):
2081
class MandosDBusService(dbus.service.Object):
2524
2082
"""A D-Bus proxy object"""
2525
2083
def __init__(self):
2526
2084
dbus.service.Object.__init__(self, bus, "/")
2527
2085
_interface = "se.recompile.Mandos"
2528
2086
2529
@dbus_interface_annotations(_interface)
2530
def _foo(self):
2531
return { "org.freedesktop.DBus.Property"
2532
".EmitsChangedSignal":
2533
"false"}
2534
2535
2087
@dbus.service.signal(_interface, signature="o")
2536
2088
def ClientAdded(self, objpath):
2537
2089
"D-Bus signal"
2551
2103
def GetAllClients(self):
2552
2104
"D-Bus method"
2553
2105
return dbus.Array(c.dbus_object_path
2554
for c in
2555
tcp_server.clients.itervalues())
2106
for c in tcp_server.clients)
2556
2107
2557
2108
@dbus.service.method(_interface,
2558
2109
out_signature="a{oa{sv}}")
2560
2111
"D-Bus method"
2561
2112
return dbus.Dictionary(
2562
2113
((c.dbus_object_path, c.GetAll(""))
2563
for c in tcp_server.clients.itervalues()),
2114
for c in tcp_server.clients),
2564
2115
signature="oa{sv}")
2565
2116
2566
2117
@dbus.service.method(_interface, in_signature="o")
2567
2118
def RemoveClient(self, object_path):
2568
2119
"D-Bus method"
2569
for c in tcp_server.clients.itervalues():
2120
for c in tcp_server.clients:
2570
2121
if c.dbus_object_path == object_path:
2571
del tcp_server.clients[c.name]
2122
tcp_server.clients.remove(c)
2572
2123
c.remove_from_connection()
2573
2124
# Don't signal anything except ClientRemoved
2574
2125
c.disable(quiet=True)
2579
2130
2580
2131
del _interface
2581
2132
2582
mandos_dbus_service = MandosDBusService()
2133
class MandosDBusServiceTransitional(MandosDBusService):
2134
__metaclass__ = AlternateDBusNamesMetaclass
2135
mandos_dbus_service = MandosDBusServiceTransitional()
2583
2136
2584
2137
def cleanup():
2585
2138
"Cleanup function; run on exit"
2586
2139
service.cleanup()
2587
2140
2588
2141
multiprocessing.active_children()
2589
if not (tcp_server.clients or client_settings):
2590
return
2591
2592
# Store client before exiting. Secrets are encrypted with key
2593
# based on what config file has. If config file is
2594
# removed/edited, old secret will thus be unrecovable.
2595
clients = {}
2596
with PGPEngine() as pgp:
2597
for client in tcp_server.clients.itervalues():
2598
key = client_settings[client.name]["secret"]
2599
client.encrypted_secret = pgp.encrypt(client.secret,
2600
key)
2601
client_dict = {}
2602
2603
# A list of attributes that can not be pickled
2604
# + secret.
2605
exclude = set(("bus", "changedstate", "secret",
2606
"checker"))
2607
for name, typ in (inspect.getmembers
2608
(dbus.service.Object)):
2609
exclude.add(name)
2610
2611
client_dict["encrypted_secret"] = (client
2612
.encrypted_secret)
2613
for attr in client.client_structure:
2614
if attr not in exclude:
2615
client_dict[attr] = getattr(client, attr)
2616
2617
clients[client.name] = client_dict
2618
del client_settings[client.name]["secret"]
2619
2620
try:
2621
with (tempfile.NamedTemporaryFile
2622
(mode='wb', suffix=".pickle", prefix='clients-',
2623
dir=os.path.dirname(stored_state_path),
2624
delete=False)) as stored_state:
2625
pickle.dump((clients, client_settings), stored_state)
2626
tempname=stored_state.name
2627
os.rename(tempname, stored_state_path)
2628
except (IOError, OSError) as e:
2629
if not debug:
2630
try:
2631
os.remove(tempname)
2632
except NameError:
2633
pass
2634
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
2635
logger.warning("Could not save persistent state: {0}"
2636
.format(os.strerror(e.errno)))
2637
else:
2638
logger.warning("Could not save persistent state:",
2639
exc_info=e)
2640
raise e
2641
2642
# Delete all clients, and settings from config
2643
2142
while tcp_server.clients:
2644
name, client = tcp_server.clients.popitem()
2143
client = tcp_server.clients.pop()
2645
2144
if use_dbus:
2646
2145
client.remove_from_connection()
2146
client.disable_hook = None
2647
2147
# Don't signal anything except ClientRemoved
2648
2148
client.disable(quiet=True)
2649
2149
if use_dbus:
2651
2151
mandos_dbus_service.ClientRemoved(client
2652
2152
.dbus_object_path,
2653
2153
client.name)
2654
client_settings.clear()
2655
2154
2656
2155
atexit.register(cleanup)
2657
2156
2658
for client in tcp_server.clients.itervalues():
2157
for client in tcp_server.clients:
2659
2158
if use_dbus:
2660
2159
# Emit D-Bus signal
2661
2160
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2662
# Need to initiate checking of clients
2663
if client.enabled:
2664
client.init_checker()
2161
client.enable()
2665
2162
2666
2163
tcp_server.enable()
2667
2164
tcp_server.server_activate()
2670
2167
service.port = tcp_server.socket.getsockname()[1]
2671
2168
if use_ipv6:
2672
2169
logger.info("Now listening on address %r, port %d,"
2673
" flowinfo %d, scope_id %d",
2674
*tcp_server.socket.getsockname())
2170
" flowinfo %d, scope_id %d"
2171
% tcp_server.socket.getsockname())
2675
2172
else: # IPv4
2676
logger.info("Now listening on address %r, port %d",
2677
*tcp_server.socket.getsockname())
2173
logger.info("Now listening on address %r, port %d"
2174
% tcp_server.socket.getsockname())
2678
2175
2679
2176
#service.interface = tcp_server.socket.getsockname()[3]
2680
2177
2683
2180
try:
2684
2181
service.activate()
2685
2182
except dbus.exceptions.DBusException as error:
2686
logger.critical("D-Bus Exception", exc_info=error)
2183
logger.critical("DBusException: %s", error)
2687
2184
cleanup()
2688
2185
sys.exit(1)
2689
2186
# End of Avahi example code
2696
2193
logger.debug("Starting main loop")
2697
2194
main_loop.run()
2698
2195
except AvahiError as error:
2699
logger.critical("Avahi Error", exc_info=error)
2196
logger.critical("AvahiError: %s", error)
2700
2197
cleanup()
2701
2198
sys.exit(1)
2702
2199
except KeyboardInterrupt:
2707
2204
# Must run before the D-Bus bus name gets deregistered
2708
2205
cleanup()
2709
2206
2207
2710
2208
if __name__ == '__main__':
2711
2209
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0