To get this branch, use:
bzr branch
http://bzr.recompile.se/loggerhead/mandos/trunk
« back to all changes in this revision
Viewing changes to mandos
- browse files at revision 482
- compare with another revision
- download diff
- download tarball
- view history from revision 482
- Committer: Teddy Hogeborn
- Date: 2011-04-02 06:37:18 UTC
- Revision ID: teddy@fukt.bsnet.se-20110402063718-13ldrcuu0t33sdc4
* mandos: Tolerate restarting Avahi servers. Also Changed to new
"except x as y" exception syntax.
(AvahiService.entry_group_state_changed_match): New; contains the
SignalMatch object.
(AvahiService.remove): Really remove the group and the signal
connection, if any.
(AvahiService.add): Always create a new group and signal connection.
(AvahiService.cleanup): Changed to simply call remove().
(AvahiService.server_state_changed): Handle and log more bad states.
(AvahiService.activate): Set "follow_name_owner_changes=True" on the
Avahi Server proxy object.
(ClientDBus.checked_ok): Do not return anything.
(ClientDBus.CheckedOK): Do not return anything, as documented.
* mandos-monitor: Call D-Bus methods asynchronously.
"except x as y" exception syntax.
(AvahiService.entry_group_state_changed_match): New; contains the
SignalMatch object.
(AvahiService.remove): Really remove the group and the signal
connection, if any.
(AvahiService.add): Always create a new group and signal connection.
(AvahiService.cleanup): Changed to simply call remove().
(AvahiService.server_state_changed): Handle and log more bad states.
(AvahiService.activate): Set "follow_name_owner_changes=True" on the
Avahi Server proxy object.
(ClientDBus.checked_ok): Do not return anything.
(ClientDBus.CheckedOK): Do not return anything, as documented.
* mandos-monitor: Call D-Bus methods asynchronously.
- 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
28
28
# along with this program. If not, see
29
29
# <http://www.gnu.org/licenses/>.
30
30
#
31
# Contact the authors at <mandos@recompile.se>.
31
# Contact the authors at <mandos@fukt.bsnet.se>.
32
32
#
33
33
34
34
from __future__ import (division, absolute_import, print_function,
35
35
unicode_literals)
36
36
37
from future_builtins import *
38
39
37
import SocketServer as socketserver
40
38
import socket
41
39
import argparse
64
62
import functools
65
63
import cPickle as pickle
66
64
import multiprocessing
67
import types
68
import binascii
69
import tempfile
70
import itertools
71
import collections
72
65
73
66
import dbus
74
67
import dbus.service
79
72
import ctypes.util
80
73
import xml.dom.minidom
81
74
import inspect
82
import GnuPGInterface
83
75
84
76
try:
85
77
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
89
81
except ImportError:
90
82
SO_BINDTODEVICE = None
91
83
92
version = "1.6.0"
93
stored_state_file = "clients.pickle"
94
95
logger = logging.getLogger()
84
85
version = "1.3.0"
86
87
#logger = logging.getLogger('mandos')
88
logger = logging.Logger('mandos')
96
89
syslogger = (logging.handlers.SysLogHandler
97
90
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
98
91
address = str("/dev/log")))
99
100
try:
101
if_nametoindex = (ctypes.cdll.LoadLibrary
102
(ctypes.util.find_library("c"))
103
.if_nametoindex)
104
except (OSError, AttributeError):
105
def if_nametoindex(interface):
106
"Get an interface index the hard way, i.e. using fcntl()"
107
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
108
with contextlib.closing(socket.socket()) as s:
109
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
110
struct.pack(str("16s16x"),
111
interface))
112
interface_index = struct.unpack(str("I"),
113
ifreq[16:20])[0]
114
return interface_index
115
116
117
def initlogger(debug, level=logging.WARNING):
118
"""init logger and add loglevel"""
119
120
syslogger.setFormatter(logging.Formatter
121
('Mandos [%(process)d]: %(levelname)s:'
122
' %(message)s'))
123
logger.addHandler(syslogger)
124
125
if debug:
126
console = logging.StreamHandler()
127
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
128
' [%(process)d]:'
129
' %(levelname)s:'
130
' %(message)s'))
131
logger.addHandler(console)
132
logger.setLevel(level)
133
134
135
class PGPError(Exception):
136
"""Exception if encryption/decryption fails"""
137
pass
138
139
140
class PGPEngine(object):
141
"""A simple class for OpenPGP symmetric encryption & decryption"""
142
def __init__(self):
143
self.gnupg = GnuPGInterface.GnuPG()
144
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
145
self.gnupg = GnuPGInterface.GnuPG()
146
self.gnupg.options.meta_interactive = False
147
self.gnupg.options.homedir = self.tempdir
148
self.gnupg.options.extra_args.extend(['--force-mdc',
149
'--quiet',
150
'--no-use-agent'])
151
152
def __enter__(self):
153
return self
154
155
def __exit__(self, exc_type, exc_value, traceback):
156
self._cleanup()
157
return False
158
159
def __del__(self):
160
self._cleanup()
161
162
def _cleanup(self):
163
if self.tempdir is not None:
164
# Delete contents of tempdir
165
for root, dirs, files in os.walk(self.tempdir,
166
topdown = False):
167
for filename in files:
168
os.remove(os.path.join(root, filename))
169
for dirname in dirs:
170
os.rmdir(os.path.join(root, dirname))
171
# Remove tempdir
172
os.rmdir(self.tempdir)
173
self.tempdir = None
174
175
def password_encode(self, password):
176
# Passphrase can not be empty and can not contain newlines or
177
# NUL bytes. So we prefix it and hex encode it.
178
return b"mandos" + binascii.hexlify(password)
179
180
def encrypt(self, data, password):
181
self.gnupg.passphrase = self.password_encode(password)
182
with open(os.devnull, "w") as devnull:
183
try:
184
proc = self.gnupg.run(['--symmetric'],
185
create_fhs=['stdin', 'stdout'],
186
attach_fhs={'stderr': devnull})
187
with contextlib.closing(proc.handles['stdin']) as f:
188
f.write(data)
189
with contextlib.closing(proc.handles['stdout']) as f:
190
ciphertext = f.read()
191
proc.wait()
192
except IOError as e:
193
raise PGPError(e)
194
self.gnupg.passphrase = None
195
return ciphertext
196
197
def decrypt(self, data, password):
198
self.gnupg.passphrase = self.password_encode(password)
199
with open(os.devnull, "w") as devnull:
200
try:
201
proc = self.gnupg.run(['--decrypt'],
202
create_fhs=['stdin', 'stdout'],
203
attach_fhs={'stderr': devnull})
204
with contextlib.closing(proc.handles['stdin']) as f:
205
f.write(data)
206
with contextlib.closing(proc.handles['stdout']) as f:
207
decrypted_plaintext = f.read()
208
proc.wait()
209
except IOError as e:
210
raise PGPError(e)
211
self.gnupg.passphrase = None
212
return decrypted_plaintext
213
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)
214
102
215
103
class AvahiError(Exception):
216
104
def __init__(self, value, *args, **kwargs):
246
134
server: D-Bus Server
247
135
bus: dbus.SystemBus()
248
136
"""
249
250
137
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
251
138
servicetype = None, port = None, TXT = None,
252
139
domain = "", host = "", max_renames = 32768,
265
152
self.server = None
266
153
self.bus = bus
267
154
self.entry_group_state_changed_match = None
268
269
155
def rename(self):
270
156
"""Derived from the Avahi example code"""
271
157
if self.rename_count >= self.max_renames:
273
159
" after %i retries, exiting.",
274
160
self.rename_count)
275
161
raise AvahiServiceError("Too many renames")
276
self.name = unicode(self.server
277
.GetAlternativeServiceName(self.name))
162
self.name = unicode(self.server.GetAlternativeServiceName(self.name))
278
163
logger.info("Changing Zeroconf service name to %r ...",
279
164
self.name)
165
syslogger.setFormatter(logging.Formatter
166
('Mandos (%s) [%%(process)d]:'
167
' %%(levelname)s: %%(message)s'
168
% self.name))
280
169
self.remove()
281
170
try:
282
171
self.add()
283
172
except dbus.exceptions.DBusException as error:
284
logger.critical("D-Bus Exception", exc_info=error)
173
logger.critical("DBusException: %s", error)
285
174
self.cleanup()
286
175
os._exit(1)
287
176
self.rename_count += 1
288
289
177
def remove(self):
290
178
"""Derived from the Avahi example code"""
179
if self.group is not None:
180
try:
181
self.group.Free()
182
except (dbus.exceptions.UnknownMethodException,
183
dbus.exceptions.DBusException) as e:
184
pass
185
self.group = None
291
186
if self.entry_group_state_changed_match is not None:
292
187
self.entry_group_state_changed_match.remove()
293
188
self.entry_group_state_changed_match = None
294
if self.group is not None:
295
self.group.Reset()
296
297
189
def add(self):
298
190
"""Derived from the Avahi example code"""
299
191
self.remove()
300
if self.group is None:
301
self.group = dbus.Interface(
302
self.bus.get_object(avahi.DBUS_NAME,
303
self.server.EntryGroupNew()),
304
avahi.DBUS_INTERFACE_ENTRY_GROUP)
192
self.group = dbus.Interface(
193
self.bus.get_object(avahi.DBUS_NAME,
194
self.server.EntryGroupNew(),
195
follow_name_owner_changes=True),
196
avahi.DBUS_INTERFACE_ENTRY_GROUP)
305
197
self.entry_group_state_changed_match = (
306
198
self.group.connect_to_signal(
307
'StateChanged', self.entry_group_state_changed))
199
'StateChanged', self .entry_group_state_changed))
308
200
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
309
201
self.name, self.type)
310
202
self.group.AddService(
316
208
dbus.UInt16(self.port),
317
209
avahi.string_array_to_txt_array(self.TXT))
318
210
self.group.Commit()
319
320
211
def entry_group_state_changed(self, state, error):
321
212
"""Derived from the Avahi example code"""
322
213
logger.debug("Avahi entry group state change: %i", state)
329
220
elif state == avahi.ENTRY_GROUP_FAILURE:
330
221
logger.critical("Avahi: Error in group state changed %s",
331
222
unicode(error))
332
raise AvahiGroupError("State changed: {0!s}"
333
.format(error))
334
223
raise AvahiGroupError("State changed: %s"
224
% unicode(error))
335
225
def cleanup(self):
336
226
"""Derived from the Avahi example code"""
337
if self.group is not None:
338
try:
339
self.group.Free()
340
except (dbus.exceptions.UnknownMethodException,
341
dbus.exceptions.DBusException):
342
pass
343
self.group = None
344
227
self.remove()
345
346
228
def server_state_changed(self, state, error=None):
347
229
"""Derived from the Avahi example code"""
348
230
logger.debug("Avahi server state change: %i", state)
354
236
avahi.SERVER_FAILURE:
355
237
"Zeroconf server failure" }
356
238
if state in bad_states:
357
if bad_states[state] is not None:
358
if error is None:
359
logger.error(bad_states[state])
360
else:
361
logger.error(bad_states[state] + ": %r", error)
362
self.cleanup()
239
if bad_states[state]:
240
logger.error(bad_states[state])
241
self.remove()
363
242
elif state == avahi.SERVER_RUNNING:
364
243
self.add()
365
244
else:
366
if error is None:
367
logger.debug("Unknown state: %r", state)
368
else:
369
logger.debug("Unknown state: %r: %r", state, error)
370
245
logger.debug("Unknown state: %r", state)
371
246
def activate(self):
372
247
"""Derived from the Avahi example code"""
373
248
if self.server is None:
381
256
self.server_state_changed(self.server.GetState())
382
257
383
258
384
class AvahiServiceToSyslog(AvahiService):
385
def rename(self):
386
"""Add the new name to the syslog messages"""
387
ret = AvahiService.rename(self)
388
syslogger.setFormatter(logging.Formatter
389
('Mandos ({0}) [%(process)d]:'
390
' %(levelname)s: %(message)s'
391
.format(self.name)))
392
return ret
393
394
395
def timedelta_to_milliseconds(td):
396
"Convert a datetime.timedelta() to milliseconds"
397
return ((td.days * 24 * 60 * 60 * 1000)
398
+ (td.seconds * 1000)
399
+ (td.microseconds // 1000))
400
401
402
259
class Client(object):
403
260
"""A representation of a client host served by this server.
404
261
405
262
Attributes:
406
approved: bool(); 'None' if not yet approved/disapproved
263
_approved: bool(); 'None' if not yet approved/disapproved
407
264
approval_delay: datetime.timedelta(); Time to wait for approval
408
265
approval_duration: datetime.timedelta(); Duration of one approval
409
266
checker: subprocess.Popen(); a running checker process used
416
273
instance %(name)s can be used in the command.
417
274
checker_initiator_tag: a gobject event source tag, or None
418
275
created: datetime.datetime(); (UTC) object creation
419
client_structure: Object describing what attributes a client has
420
and is used for storing the client at exit
421
276
current_checker_command: string; current running checker_command
277
disable_hook: If set, called by disable() as disable_hook(self)
422
278
disable_initiator_tag: a gobject event source tag, or None
423
279
enabled: bool()
424
280
fingerprint: string (40 or 32 hexadecimal digits); used to
427
283
interval: datetime.timedelta(); How often to start a new checker
428
284
last_approval_request: datetime.datetime(); (UTC) or None
429
285
last_checked_ok: datetime.datetime(); (UTC) or None
430
last_checker_status: integer between 0 and 255 reflecting exit
431
status of last checker. -1 reflects crashed
432
checker, -2 means no checker completed yet.
433
last_enabled: datetime.datetime(); (UTC) or None
286
last_enabled: datetime.datetime(); (UTC)
434
287
name: string; from the config file, used in log messages and
435
288
D-Bus identifiers
436
289
secret: bytestring; sent verbatim (over TLS) to client
437
290
timeout: datetime.timedelta(); How long from last_checked_ok
438
291
until this client is disabled
439
extended_timeout: extra long timeout when secret has been sent
440
292
runtime_expansions: Allowed attributes for runtime expansion.
441
expires: datetime.datetime(); time (UTC) when a client will be
442
disabled, or None
443
293
"""
444
294
445
295
runtime_expansions = ("approval_delay", "approval_duration",
446
"created", "enabled", "expires",
447
"fingerprint", "host", "interval",
448
"last_approval_request", "last_checked_ok",
296
"created", "enabled", "fingerprint",
297
"host", "interval", "last_checked_ok",
449
298
"last_enabled", "name", "timeout")
450
client_defaults = { "timeout": "PT5M",
451
"extended_timeout": "PT15M",
452
"interval": "PT2M",
453
"checker": "fping -q -- %%(host)s",
454
"host": "",
455
"approval_delay": "PT0S",
456
"approval_duration": "PT1S",
457
"approved_by_default": "True",
458
"enabled": "True",
459
}
299
300
@staticmethod
301
def _timedelta_to_milliseconds(td):
302
"Convert a datetime.timedelta() to milliseconds"
303
return ((td.days * 24 * 60 * 60 * 1000)
304
+ (td.seconds * 1000)
305
+ (td.microseconds // 1000))
460
306
461
307
def timeout_milliseconds(self):
462
308
"Return the 'timeout' attribute in milliseconds"
463
return timedelta_to_milliseconds(self.timeout)
464
465
def extended_timeout_milliseconds(self):
466
"Return the 'extended_timeout' attribute in milliseconds"
467
return timedelta_to_milliseconds(self.extended_timeout)
309
return self._timedelta_to_milliseconds(self.timeout)
468
310
469
311
def interval_milliseconds(self):
470
312
"Return the 'interval' attribute in milliseconds"
471
return timedelta_to_milliseconds(self.interval)
472
313
return self._timedelta_to_milliseconds(self.interval)
314
473
315
def approval_delay_milliseconds(self):
474
return timedelta_to_milliseconds(self.approval_delay)
475
476
@staticmethod
477
def config_parser(config):
478
"""Construct a new dict of client settings of this form:
479
{ client_name: {setting_name: value, ...}, ...}
480
with exceptions for any special settings as defined above.
481
NOTE: Must be a pure function. Must return the same result
482
value given the same arguments.
483
"""
484
settings = {}
485
for client_name in config.sections():
486
section = dict(config.items(client_name))
487
client = settings[client_name] = {}
488
489
client["host"] = section["host"]
490
# Reformat values from string types to Python types
491
client["approved_by_default"] = config.getboolean(
492
client_name, "approved_by_default")
493
client["enabled"] = config.getboolean(client_name,
494
"enabled")
495
496
client["fingerprint"] = (section["fingerprint"].upper()
497
.replace(" ", ""))
498
if "secret" in section:
499
client["secret"] = section["secret"].decode("base64")
500
elif "secfile" in section:
501
with open(os.path.expanduser(os.path.expandvars
502
(section["secfile"])),
503
"rb") as secfile:
504
client["secret"] = secfile.read()
505
else:
506
raise TypeError("No secret or secfile for section {0}"
507
.format(section))
508
client["timeout"] = string_to_delta(section["timeout"])
509
client["extended_timeout"] = string_to_delta(
510
section["extended_timeout"])
511
client["interval"] = string_to_delta(section["interval"])
512
client["approval_delay"] = string_to_delta(
513
section["approval_delay"])
514
client["approval_duration"] = string_to_delta(
515
section["approval_duration"])
516
client["checker_command"] = section["checker"]
517
client["last_approval_request"] = None
518
client["last_checked_ok"] = None
519
client["last_checker_status"] = -2
520
521
return settings
522
523
def __init__(self, settings, name = None):
316
return self._timedelta_to_milliseconds(self.approval_delay)
317
318
def __init__(self, name = None, disable_hook=None, config=None):
319
"""Note: the 'checker' key in 'config' sets the
320
'checker_command' attribute and *not* the 'checker'
321
attribute."""
524
322
self.name = name
525
# adding all client settings
526
for setting, value in settings.iteritems():
527
setattr(self, setting, value)
528
529
if self.enabled:
530
if not hasattr(self, "last_enabled"):
531
self.last_enabled = datetime.datetime.utcnow()
532
if not hasattr(self, "expires"):
533
self.expires = (datetime.datetime.utcnow()
534
+ self.timeout)
535
else:
536
self.last_enabled = None
537
self.expires = None
538
323
if config is None:
324
config = {}
539
325
logger.debug("Creating client %r", self.name)
540
326
# Uppercase and remove spaces from fingerprint for later
541
327
# comparison purposes with return value from the fingerprint()
542
328
# function
329
self.fingerprint = (config["fingerprint"].upper()
330
.replace(" ", ""))
543
331
logger.debug(" Fingerprint: %s", self.fingerprint)
544
self.created = settings.get("created",
545
datetime.datetime.utcnow())
546
547
# attributes specific for this server instance
332
if "secret" in config:
333
self.secret = config["secret"].decode("base64")
334
elif "secfile" in config:
335
with open(os.path.expanduser(os.path.expandvars
336
(config["secfile"])),
337
"rb") as secfile:
338
self.secret = secfile.read()
339
else:
340
raise TypeError("No secret or secfile for client %s"
341
% self.name)
342
self.host = config.get("host", "")
343
self.created = datetime.datetime.utcnow()
344
self.enabled = False
345
self.last_approval_request = None
346
self.last_enabled = None
347
self.last_checked_ok = None
348
self.timeout = string_to_delta(config["timeout"])
349
self.interval = string_to_delta(config["interval"])
350
self.disable_hook = disable_hook
548
351
self.checker = None
549
352
self.checker_initiator_tag = None
550
353
self.disable_initiator_tag = None
551
354
self.checker_callback_tag = None
355
self.checker_command = config["checker"]
552
356
self.current_checker_command = None
553
self.approved = None
357
self.last_connect = None
358
self._approved = None
359
self.approved_by_default = config.get("approved_by_default",
360
True)
554
361
self.approvals_pending = 0
555
self.changedstate = (multiprocessing_manager
556
.Condition(multiprocessing_manager
557
.Lock()))
558
self.client_structure = [attr for attr in
559
self.__dict__.iterkeys()
560
if not attr.startswith("_")]
561
self.client_structure.append("client_structure")
562
563
for name, t in inspect.getmembers(type(self),
564
lambda obj:
565
isinstance(obj,
566
property)):
567
if not name.startswith("_"):
568
self.client_structure.append(name)
362
self.approval_delay = string_to_delta(
363
config["approval_delay"])
364
self.approval_duration = string_to_delta(
365
config["approval_duration"])
366
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
569
367
570
# Send notice to process children that client state has changed
571
368
def send_changedstate(self):
572
with self.changedstate:
573
self.changedstate.notify_all()
574
369
self.changedstate.acquire()
370
self.changedstate.notify_all()
371
self.changedstate.release()
372
575
373
def enable(self):
576
374
"""Start this client's checker and timeout hooks"""
577
375
if getattr(self, "enabled", False):
578
376
# Already enabled
579
377
return
580
self.expires = datetime.datetime.utcnow() + self.timeout
581
self.enabled = True
378
self.send_changedstate()
582
379
self.last_enabled = datetime.datetime.utcnow()
583
self.init_checker()
584
self.send_changedstate()
585
586
def disable(self, quiet=True):
587
"""Disable this client."""
588
if not getattr(self, "enabled", False):
589
return False
590
if not quiet:
591
logger.info("Disabling client %s", self.name)
592
if getattr(self, "disable_initiator_tag", None) is not None:
593
gobject.source_remove(self.disable_initiator_tag)
594
self.disable_initiator_tag = None
595
self.expires = None
596
if getattr(self, "checker_initiator_tag", None) is not None:
597
gobject.source_remove(self.checker_initiator_tag)
598
self.checker_initiator_tag = None
599
self.stop_checker()
600
self.enabled = False
601
if not quiet:
602
self.send_changedstate()
603
# Do not run this again if called by a gobject.timeout_add
604
return False
605
606
def __del__(self):
607
self.disable()
608
609
def init_checker(self):
610
380
# Schedule a new checker to be started an 'interval' from now,
611
381
# and every interval from then on.
612
if self.checker_initiator_tag is not None:
613
gobject.source_remove(self.checker_initiator_tag)
614
382
self.checker_initiator_tag = (gobject.timeout_add
615
383
(self.interval_milliseconds(),
616
384
self.start_checker))
617
385
# Schedule a disable() when 'timeout' has passed
618
if self.disable_initiator_tag is not None:
619
gobject.source_remove(self.disable_initiator_tag)
620
386
self.disable_initiator_tag = (gobject.timeout_add
621
387
(self.timeout_milliseconds(),
622
388
self.disable))
389
self.enabled = True
623
390
# Also start a new checker *right now*.
624
391
self.start_checker()
625
392
393
def disable(self, quiet=True):
394
"""Disable this client."""
395
if not getattr(self, "enabled", False):
396
return False
397
if not quiet:
398
self.send_changedstate()
399
if not quiet:
400
logger.info("Disabling client %s", self.name)
401
if getattr(self, "disable_initiator_tag", False):
402
gobject.source_remove(self.disable_initiator_tag)
403
self.disable_initiator_tag = None
404
if getattr(self, "checker_initiator_tag", False):
405
gobject.source_remove(self.checker_initiator_tag)
406
self.checker_initiator_tag = None
407
self.stop_checker()
408
if self.disable_hook:
409
self.disable_hook(self)
410
self.enabled = False
411
# Do not run this again if called by a gobject.timeout_add
412
return False
413
414
def __del__(self):
415
self.disable_hook = None
416
self.disable()
417
626
418
def checker_callback(self, pid, condition, command):
627
419
"""The checker has completed, so take appropriate actions."""
628
420
self.checker_callback_tag = None
629
421
self.checker = None
630
422
if os.WIFEXITED(condition):
631
self.last_checker_status = os.WEXITSTATUS(condition)
632
if self.last_checker_status == 0:
423
exitstatus = os.WEXITSTATUS(condition)
424
if exitstatus == 0:
633
425
logger.info("Checker for %(name)s succeeded",
634
426
vars(self))
635
427
self.checked_ok()
637
429
logger.info("Checker for %(name)s failed",
638
430
vars(self))
639
431
else:
640
self.last_checker_status = -1
641
432
logger.warning("Checker for %(name)s crashed?",
642
433
vars(self))
643
434
644
435
def checked_ok(self):
645
"""Assert that the client has been seen, alive and well."""
436
"""Bump up the timeout for this client.
437
438
This should only be called when the client has been seen,
439
alive and well.
440
"""
646
441
self.last_checked_ok = datetime.datetime.utcnow()
647
self.last_checker_status = 0
648
self.bump_timeout()
649
650
def bump_timeout(self, timeout=None):
651
"""Bump up the timeout for this client."""
652
if timeout is None:
653
timeout = self.timeout
654
if self.disable_initiator_tag is not None:
655
gobject.source_remove(self.disable_initiator_tag)
656
self.disable_initiator_tag = None
657
if getattr(self, "enabled", False):
658
self.disable_initiator_tag = (gobject.timeout_add
659
(timedelta_to_milliseconds
660
(timeout), self.disable))
661
self.expires = datetime.datetime.utcnow() + timeout
442
gobject.source_remove(self.disable_initiator_tag)
443
self.disable_initiator_tag = (gobject.timeout_add
444
(self.timeout_milliseconds(),
445
self.disable))
662
446
663
447
def need_approval(self):
664
448
self.last_approval_request = datetime.datetime.utcnow()
669
453
If a checker already exists, leave it running and do
670
454
nothing."""
671
455
# The reason for not killing a running checker is that if we
672
# did that, and if a checker (for some reason) started running
673
# slowly and taking more than 'interval' time, then the client
674
# would inevitably timeout, since no checker would get a
675
# chance to run to completion. If we instead leave running
456
# did that, then if a checker (for some reason) started
457
# running slowly and taking more than 'interval' time, the
458
# client would inevitably timeout, since no checker would get
459
# a chance to run to completion. If we instead leave running
676
460
# checkers alone, the checker would have to take more time
677
461
# than 'timeout' for the client to be disabled, which is as it
678
462
# should be.
692
476
self.current_checker_command)
693
477
# Start a new checker if needed
694
478
if self.checker is None:
695
# Escape attributes for the shell
696
escaped_attrs = dict(
697
(attr, re.escape(unicode(getattr(self, attr))))
698
for attr in
699
self.runtime_expansions)
700
479
try:
701
command = self.checker_command % escaped_attrs
702
except TypeError as error:
703
logger.error('Could not format string "%s"',
704
self.checker_command, exc_info=error)
705
return True # Try again later
480
# In case checker_command has exactly one % operator
481
command = self.checker_command % self.host
482
except TypeError:
483
# Escape attributes for the shell
484
escaped_attrs = dict(
485
(attr,
486
re.escape(unicode(str(getattr(self, attr, "")),
487
errors=
488
'replace')))
489
for attr in
490
self.runtime_expansions)
491
492
try:
493
command = self.checker_command % escaped_attrs
494
except TypeError as error:
495
logger.error('Could not format string "%s":'
496
' %s', self.checker_command, error)
497
return True # Try again later
706
498
self.current_checker_command = command
707
499
try:
708
500
logger.info("Starting checker %r for %s",
714
506
self.checker = subprocess.Popen(command,
715
507
close_fds=True,
716
508
shell=True, cwd="/")
509
self.checker_callback_tag = (gobject.child_watch_add
510
(self.checker.pid,
511
self.checker_callback,
512
data=command))
513
# The checker may have completed before the gobject
514
# watch was added. Check for this.
515
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
516
if pid:
517
gobject.source_remove(self.checker_callback_tag)
518
self.checker_callback(pid, status, command)
717
519
except OSError as error:
718
logger.error("Failed to start subprocess",
719
exc_info=error)
720
self.checker_callback_tag = (gobject.child_watch_add
721
(self.checker.pid,
722
self.checker_callback,
723
data=command))
724
# The checker may have completed before the gobject
725
# watch was added. Check for this.
726
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
727
if pid:
728
gobject.source_remove(self.checker_callback_tag)
729
self.checker_callback(pid, status, command)
520
logger.error("Failed to start subprocess: %s",
521
error)
730
522
# Re-run this periodically if run by gobject.timeout_add
731
523
return True
732
524
739
531
return
740
532
logger.debug("Stopping checker for %(name)s", vars(self))
741
533
try:
742
self.checker.terminate()
534
os.kill(self.checker.pid, signal.SIGTERM)
743
535
#time.sleep(0.5)
744
536
#if self.checker.poll() is None:
745
# self.checker.kill()
537
# os.kill(self.checker.pid, signal.SIGKILL)
746
538
except OSError as error:
747
539
if error.errno != errno.ESRCH: # No such process
748
540
raise
749
541
self.checker = None
750
542
751
752
543
def dbus_service_property(dbus_interface, signature="v",
753
544
access="readwrite", byte_arrays=False):
754
545
"""Decorators for marking methods of a DBusObjectWithProperties to
765
556
# "Set" method, so we fail early here:
766
557
if byte_arrays and signature != "ay":
767
558
raise ValueError("Byte arrays not supported for non-'ay'"
768
" signature {0!r}".format(signature))
559
" signature %r" % signature)
769
560
def decorator(func):
770
561
func._dbus_is_property = True
771
562
func._dbus_interface = dbus_interface
779
570
return decorator
780
571
781
572
782
def dbus_interface_annotations(dbus_interface):
783
"""Decorator for marking functions returning interface annotations
784
785
Usage:
786
787
@dbus_interface_annotations("org.example.Interface")
788
def _foo(self): # Function name does not matter
789
return {"org.freedesktop.DBus.Deprecated": "true",
790
"org.freedesktop.DBus.Property.EmitsChangedSignal":
791
"false"}
792
"""
793
def decorator(func):
794
func._dbus_is_interface = True
795
func._dbus_interface = dbus_interface
796
func._dbus_name = dbus_interface
797
return func
798
return decorator
799
800
801
def dbus_annotations(annotations):
802
"""Decorator to annotate D-Bus methods, signals or properties
803
Usage:
804
805
@dbus_service_property("org.example.Interface", signature="b",
806
access="r")
807
@dbus_annotations({{"org.freedesktop.DBus.Deprecated": "true",
808
"org.freedesktop.DBus.Property."
809
"EmitsChangedSignal": "false"})
810
def Property_dbus_property(self):
811
return dbus.Boolean(False)
812
"""
813
def decorator(func):
814
func._dbus_annotations = annotations
815
return func
816
return decorator
817
818
819
573
class DBusPropertyException(dbus.exceptions.DBusException):
820
574
"""A base class for D-Bus property-related exceptions
821
575
"""
837
591
838
592
class DBusObjectWithProperties(dbus.service.Object):
839
593
"""A D-Bus object with properties.
840
594
841
595
Classes inheriting from this can use the dbus_service_property
842
596
decorator to expose methods as D-Bus properties. It exposes the
843
597
standard Get(), Set(), and GetAll() methods on the D-Bus.
844
598
"""
845
599
846
600
@staticmethod
847
def _is_dbus_thing(thing):
848
"""Returns a function testing if an attribute is a D-Bus thing
849
850
If called like _is_dbus_thing("method") it returns a function
851
suitable for use as predicate to inspect.getmembers().
852
"""
853
return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),
854
False)
601
def _is_dbus_property(obj):
602
return getattr(obj, "_dbus_is_property", False)
855
603
856
def _get_all_dbus_things(self, thing):
604
def _get_all_dbus_properties(self):
857
605
"""Returns a generator of (name, attribute) pairs
858
606
"""
859
return ((getattr(athing.__get__(self), "_dbus_name",
860
name),
861
athing.__get__(self))
862
for cls in self.__class__.__mro__
863
for name, athing in
864
inspect.getmembers(cls,
865
self._is_dbus_thing(thing)))
607
return ((prop._dbus_name, prop)
608
for name, prop in
609
inspect.getmembers(self, self._is_dbus_property))
866
610
867
611
def _get_dbus_property(self, interface_name, property_name):
868
612
"""Returns a bound method if one exists which is a D-Bus
869
613
property with the specified name and interface.
870
614
"""
871
for cls in self.__class__.__mro__:
872
for name, value in (inspect.getmembers
873
(cls,
874
self._is_dbus_thing("property"))):
875
if (value._dbus_name == property_name
876
and value._dbus_interface == interface_name):
877
return value.__get__(self)
878
615
for name in (property_name,
616
property_name + "_dbus_property"):
617
prop = getattr(self, name, None)
618
if (prop is None
619
or not self._is_dbus_property(prop)
620
or prop._dbus_name != property_name
621
or (interface_name and prop._dbus_interface
622
and interface_name != prop._dbus_interface)):
623
continue
624
return prop
879
625
# No such property
880
626
raise DBusPropertyNotFound(self.dbus_object_path + ":"
881
627
+ interface_name + "."
906
652
# signatures other than "ay".
907
653
if prop._dbus_signature != "ay":
908
654
raise ValueError
909
value = dbus.ByteArray(b''.join(chr(byte)
910
for byte in value))
655
value = dbus.ByteArray(''.join(unichr(byte)
656
for byte in value))
911
657
prop(value)
912
658
913
659
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
915
661
def GetAll(self, interface_name):
916
662
"""Standard D-Bus property GetAll() method, see D-Bus
917
663
standard.
918
664
919
665
Note: Will not include properties with access="write".
920
666
"""
921
properties = {}
922
for name, prop in self._get_all_dbus_things("property"):
667
all = {}
668
for name, prop in self._get_all_dbus_properties():
923
669
if (interface_name
924
670
and interface_name != prop._dbus_interface):
925
671
# Interface non-empty but did not match
929
675
continue
930
676
value = prop()
931
677
if not hasattr(value, "variant_level"):
932
properties[name] = value
678
all[name] = value
933
679
continue
934
properties[name] = type(value)(value, variant_level=
935
value.variant_level+1)
936
return dbus.Dictionary(properties, signature="sv")
680
all[name] = type(value)(value, variant_level=
681
value.variant_level+1)
682
return dbus.Dictionary(all, signature="sv")
937
683
938
684
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
939
685
out_signature="s",
940
686
path_keyword='object_path',
941
687
connection_keyword='connection')
942
688
def Introspect(self, object_path, connection):
943
"""Overloading of standard D-Bus method.
944
945
Inserts property tags and interface annotation tags.
689
"""Standard D-Bus method, overloaded to insert property tags.
946
690
"""
947
691
xmlstring = dbus.service.Object.Introspect(self, object_path,
948
692
connection)
955
699
e.setAttribute("access", prop._dbus_access)
956
700
return e
957
701
for if_tag in document.getElementsByTagName("interface"):
958
# Add property tags
959
702
for tag in (make_tag(document, name, prop)
960
703
for name, prop
961
in self._get_all_dbus_things("property")
704
in self._get_all_dbus_properties()
962
705
if prop._dbus_interface
963
706
== if_tag.getAttribute("name")):
964
707
if_tag.appendChild(tag)
965
# Add annotation tags
966
for typ in ("method", "signal", "property"):
967
for tag in if_tag.getElementsByTagName(typ):
968
annots = dict()
969
for name, prop in (self.
970
_get_all_dbus_things(typ)):
971
if (name == tag.getAttribute("name")
972
and prop._dbus_interface
973
== if_tag.getAttribute("name")):
974
annots.update(getattr
975
(prop,
976
"_dbus_annotations",
977
{}))
978
for name, value in annots.iteritems():
979
ann_tag = document.createElement(
980
"annotation")
981
ann_tag.setAttribute("name", name)
982
ann_tag.setAttribute("value", value)
983
tag.appendChild(ann_tag)
984
# Add interface annotation tags
985
for annotation, value in dict(
986
itertools.chain.from_iterable(
987
annotations().iteritems()
988
for name, annotations in
989
self._get_all_dbus_things("interface")
990
if name == if_tag.getAttribute("name")
991
)).iteritems():
992
ann_tag = document.createElement("annotation")
993
ann_tag.setAttribute("name", annotation)
994
ann_tag.setAttribute("value", value)
995
if_tag.appendChild(ann_tag)
996
708
# Add the names to the return values for the
997
709
# "org.freedesktop.DBus.Properties" methods
998
710
if (if_tag.getAttribute("name")
1013
725
except (AttributeError, xml.dom.DOMException,
1014
726
xml.parsers.expat.ExpatError) as error:
1015
727
logger.error("Failed to override Introspection method",
1016
exc_info=error)
728
error)
1017
729
return xmlstring
1018
730
1019
731
1020
def datetime_to_dbus(dt, variant_level=0):
1021
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1022
if dt is None:
1023
return dbus.String("", variant_level = variant_level)
1024
return dbus.String(dt.isoformat(),
1025
variant_level=variant_level)
1026
1027
1028
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1029
"""A class decorator; applied to a subclass of
1030
dbus.service.Object, it will add alternate D-Bus attributes with
1031
interface names according to the "alt_interface_names" mapping.
1032
Usage:
1033
1034
@alternate_dbus_interfaces({"org.example.Interface":
1035
"net.example.AlternateInterface"})
1036
class SampleDBusObject(dbus.service.Object):
1037
@dbus.service.method("org.example.Interface")
1038
def SampleDBusMethod():
1039
pass
1040
1041
The above "SampleDBusMethod" on "SampleDBusObject" will be
1042
reachable via two interfaces: "org.example.Interface" and
1043
"net.example.AlternateInterface", the latter of which will have
1044
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1045
"true", unless "deprecate" is passed with a False value.
1046
1047
This works for methods and signals, and also for D-Bus properties
1048
(from DBusObjectWithProperties) and interfaces (from the
1049
dbus_interface_annotations decorator).
1050
"""
1051
def wrapper(cls):
1052
for orig_interface_name, alt_interface_name in (
1053
alt_interface_names.iteritems()):
1054
attr = {}
1055
interface_names = set()
1056
# Go though all attributes of the class
1057
for attrname, attribute in inspect.getmembers(cls):
1058
# Ignore non-D-Bus attributes, and D-Bus attributes
1059
# with the wrong interface name
1060
if (not hasattr(attribute, "_dbus_interface")
1061
or not attribute._dbus_interface
1062
.startswith(orig_interface_name)):
1063
continue
1064
# Create an alternate D-Bus interface name based on
1065
# the current name
1066
alt_interface = (attribute._dbus_interface
1067
.replace(orig_interface_name,
1068
alt_interface_name))
1069
interface_names.add(alt_interface)
1070
# Is this a D-Bus signal?
1071
if getattr(attribute, "_dbus_is_signal", False):
1072
# Extract the original non-method function by
1073
# black magic
1074
nonmethod_func = (dict(
1075
zip(attribute.func_code.co_freevars,
1076
attribute.__closure__))["func"]
1077
.cell_contents)
1078
# Create a new, but exactly alike, function
1079
# object, and decorate it to be a new D-Bus signal
1080
# with the alternate D-Bus interface name
1081
new_function = (dbus.service.signal
1082
(alt_interface,
1083
attribute._dbus_signature)
1084
(types.FunctionType(
1085
nonmethod_func.func_code,
1086
nonmethod_func.func_globals,
1087
nonmethod_func.func_name,
1088
nonmethod_func.func_defaults,
1089
nonmethod_func.func_closure)))
1090
# Copy annotations, if any
1091
try:
1092
new_function._dbus_annotations = (
1093
dict(attribute._dbus_annotations))
1094
except AttributeError:
1095
pass
1096
# Define a creator of a function to call both the
1097
# original and alternate functions, so both the
1098
# original and alternate signals gets sent when
1099
# the function is called
1100
def fixscope(func1, func2):
1101
"""This function is a scope container to pass
1102
func1 and func2 to the "call_both" function
1103
outside of its arguments"""
1104
def call_both(*args, **kwargs):
1105
"""This function will emit two D-Bus
1106
signals by calling func1 and func2"""
1107
func1(*args, **kwargs)
1108
func2(*args, **kwargs)
1109
return call_both
1110
# Create the "call_both" function and add it to
1111
# the class
1112
attr[attrname] = fixscope(attribute, new_function)
1113
# Is this a D-Bus method?
1114
elif getattr(attribute, "_dbus_is_method", False):
1115
# Create a new, but exactly alike, function
1116
# object. Decorate it to be a new D-Bus method
1117
# with the alternate D-Bus interface name. Add it
1118
# to the class.
1119
attr[attrname] = (dbus.service.method
1120
(alt_interface,
1121
attribute._dbus_in_signature,
1122
attribute._dbus_out_signature)
1123
(types.FunctionType
1124
(attribute.func_code,
1125
attribute.func_globals,
1126
attribute.func_name,
1127
attribute.func_defaults,
1128
attribute.func_closure)))
1129
# Copy annotations, if any
1130
try:
1131
attr[attrname]._dbus_annotations = (
1132
dict(attribute._dbus_annotations))
1133
except AttributeError:
1134
pass
1135
# Is this a D-Bus property?
1136
elif getattr(attribute, "_dbus_is_property", False):
1137
# Create a new, but exactly alike, function
1138
# object, and decorate it to be a new D-Bus
1139
# property with the alternate D-Bus interface
1140
# name. Add it to the class.
1141
attr[attrname] = (dbus_service_property
1142
(alt_interface,
1143
attribute._dbus_signature,
1144
attribute._dbus_access,
1145
attribute
1146
._dbus_get_args_options
1147
["byte_arrays"])
1148
(types.FunctionType
1149
(attribute.func_code,
1150
attribute.func_globals,
1151
attribute.func_name,
1152
attribute.func_defaults,
1153
attribute.func_closure)))
1154
# Copy annotations, if any
1155
try:
1156
attr[attrname]._dbus_annotations = (
1157
dict(attribute._dbus_annotations))
1158
except AttributeError:
1159
pass
1160
# Is this a D-Bus interface?
1161
elif getattr(attribute, "_dbus_is_interface", False):
1162
# Create a new, but exactly alike, function
1163
# object. Decorate it to be a new D-Bus interface
1164
# with the alternate D-Bus interface name. Add it
1165
# to the class.
1166
attr[attrname] = (dbus_interface_annotations
1167
(alt_interface)
1168
(types.FunctionType
1169
(attribute.func_code,
1170
attribute.func_globals,
1171
attribute.func_name,
1172
attribute.func_defaults,
1173
attribute.func_closure)))
1174
if deprecate:
1175
# Deprecate all alternate interfaces
1176
iname="_AlternateDBusNames_interface_annotation{0}"
1177
for interface_name in interface_names:
1178
@dbus_interface_annotations(interface_name)
1179
def func(self):
1180
return { "org.freedesktop.DBus.Deprecated":
1181
"true" }
1182
# Find an unused name
1183
for aname in (iname.format(i)
1184
for i in itertools.count()):
1185
if aname not in attr:
1186
attr[aname] = func
1187
break
1188
if interface_names:
1189
# Replace the class with a new subclass of it with
1190
# methods, signals, etc. as created above.
1191
cls = type(b"{0}Alternate".format(cls.__name__),
1192
(cls,), attr)
1193
return cls
1194
return wrapper
1195
1196
1197
@alternate_dbus_interfaces({"se.recompile.Mandos":
1198
"se.bsnet.fukt.Mandos"})
1199
732
class ClientDBus(Client, DBusObjectWithProperties):
1200
733
"""A Client class using D-Bus
1201
734
1210
743
# dbus.service.Object doesn't use super(), so we can't either.
1211
744
1212
745
def __init__(self, bus = None, *args, **kwargs):
746
self._approvals_pending = 0
1213
747
self.bus = bus
1214
748
Client.__init__(self, *args, **kwargs)
1215
749
# Only now, when this client is initialized, can it show up on
1221
755
("/clients/" + client_object_name))
1222
756
DBusObjectWithProperties.__init__(self, self.bus,
1223
757
self.dbus_object_path)
1224
1225
def notifychangeproperty(transform_func,
1226
dbus_name, type_func=lambda x: x,
1227
variant_level=1):
1228
""" Modify a variable so that it's a property which announces
1229
its changes to DBus.
1230
1231
transform_fun: Function that takes a value and a variant_level
1232
and transforms it to a D-Bus type.
1233
dbus_name: D-Bus name of the variable
1234
type_func: Function that transform the value before sending it
1235
to the D-Bus. Default: no transform
1236
variant_level: D-Bus variant level. Default: 1
1237
"""
1238
attrname = "_{0}".format(dbus_name)
1239
def setter(self, value):
1240
if hasattr(self, "dbus_object_path"):
1241
if (not hasattr(self, attrname) or
1242
type_func(getattr(self, attrname, None))
1243
!= type_func(value)):
1244
dbus_value = transform_func(type_func(value),
1245
variant_level
1246
=variant_level)
1247
self.PropertyChanged(dbus.String(dbus_name),
1248
dbus_value)
1249
setattr(self, attrname, value)
1250
1251
return property(lambda self: getattr(self, attrname), setter)
1252
1253
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1254
approvals_pending = notifychangeproperty(dbus.Boolean,
1255
"ApprovalPending",
1256
type_func = bool)
1257
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1258
last_enabled = notifychangeproperty(datetime_to_dbus,
1259
"LastEnabled")
1260
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1261
type_func = lambda checker:
1262
checker is not None)
1263
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1264
"LastCheckedOK")
1265
last_checker_status = notifychangeproperty(dbus.Int16,
1266
"LastCheckerStatus")
1267
last_approval_request = notifychangeproperty(
1268
datetime_to_dbus, "LastApprovalRequest")
1269
approved_by_default = notifychangeproperty(dbus.Boolean,
1270
"ApprovedByDefault")
1271
approval_delay = notifychangeproperty(dbus.UInt64,
1272
"ApprovalDelay",
1273
type_func =
1274
timedelta_to_milliseconds)
1275
approval_duration = notifychangeproperty(
1276
dbus.UInt64, "ApprovalDuration",
1277
type_func = timedelta_to_milliseconds)
1278
host = notifychangeproperty(dbus.String, "Host")
1279
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1280
type_func =
1281
timedelta_to_milliseconds)
1282
extended_timeout = notifychangeproperty(
1283
dbus.UInt64, "ExtendedTimeout",
1284
type_func = timedelta_to_milliseconds)
1285
interval = notifychangeproperty(dbus.UInt64,
1286
"Interval",
1287
type_func =
1288
timedelta_to_milliseconds)
1289
checker_command = notifychangeproperty(dbus.String, "Checker")
1290
1291
del notifychangeproperty
758
759
def _get_approvals_pending(self):
760
return self._approvals_pending
761
def _set_approvals_pending(self, value):
762
old_value = self._approvals_pending
763
self._approvals_pending = value
764
bval = bool(value)
765
if (hasattr(self, "dbus_object_path")
766
and bval is not bool(old_value)):
767
dbus_bool = dbus.Boolean(bval, variant_level=1)
768
self.PropertyChanged(dbus.String("ApprovalPending"),
769
dbus_bool)
770
771
approvals_pending = property(_get_approvals_pending,
772
_set_approvals_pending)
773
del _get_approvals_pending, _set_approvals_pending
774
775
@staticmethod
776
def _datetime_to_dbus(dt, variant_level=0):
777
"""Convert a UTC datetime.datetime() to a D-Bus type."""
778
return dbus.String(dt.isoformat(),
779
variant_level=variant_level)
780
781
def enable(self):
782
oldstate = getattr(self, "enabled", False)
783
r = Client.enable(self)
784
if oldstate != self.enabled:
785
# Emit D-Bus signals
786
self.PropertyChanged(dbus.String("Enabled"),
787
dbus.Boolean(True, variant_level=1))
788
self.PropertyChanged(
789
dbus.String("LastEnabled"),
790
self._datetime_to_dbus(self.last_enabled,
791
variant_level=1))
792
return r
793
794
def disable(self, quiet = False):
795
oldstate = getattr(self, "enabled", False)
796
r = Client.disable(self, quiet=quiet)
797
if not quiet and oldstate != self.enabled:
798
# Emit D-Bus signal
799
self.PropertyChanged(dbus.String("Enabled"),
800
dbus.Boolean(False, variant_level=1))
801
return r
1292
802
1293
803
def __del__(self, *args, **kwargs):
1294
804
try:
1303
813
*args, **kwargs):
1304
814
self.checker_callback_tag = None
1305
815
self.checker = None
816
# Emit D-Bus signal
817
self.PropertyChanged(dbus.String("CheckerRunning"),
818
dbus.Boolean(False, variant_level=1))
1306
819
if os.WIFEXITED(condition):
1307
820
exitstatus = os.WEXITSTATUS(condition)
1308
821
# Emit D-Bus signal
1318
831
return Client.checker_callback(self, pid, condition, command,
1319
832
*args, **kwargs)
1320
833
834
def checked_ok(self, *args, **kwargs):
835
Client.checked_ok(self, *args, **kwargs)
836
# Emit D-Bus signal
837
self.PropertyChanged(
838
dbus.String("LastCheckedOK"),
839
(self._datetime_to_dbus(self.last_checked_ok,
840
variant_level=1)))
841
842
def need_approval(self, *args, **kwargs):
843
r = Client.need_approval(self, *args, **kwargs)
844
# Emit D-Bus signal
845
self.PropertyChanged(
846
dbus.String("LastApprovalRequest"),
847
(self._datetime_to_dbus(self.last_approval_request,
848
variant_level=1)))
849
return r
850
1321
851
def start_checker(self, *args, **kwargs):
1322
852
old_checker = self.checker
1323
853
if self.checker is not None:
1330
860
and old_checker_pid != self.checker.pid):
1331
861
# Emit D-Bus signal
1332
862
self.CheckerStarted(self.current_checker_command)
863
self.PropertyChanged(
864
dbus.String("CheckerRunning"),
865
dbus.Boolean(True, variant_level=1))
1333
866
return r
1334
867
868
def stop_checker(self, *args, **kwargs):
869
old_checker = getattr(self, "checker", None)
870
r = Client.stop_checker(self, *args, **kwargs)
871
if (old_checker is not None
872
and getattr(self, "checker", None) is None):
873
self.PropertyChanged(dbus.String("CheckerRunning"),
874
dbus.Boolean(False, variant_level=1))
875
return r
876
1335
877
def _reset_approved(self):
1336
self.approved = None
878
self._approved = None
1337
879
return False
1338
880
1339
881
def approve(self, value=True):
1340
self.approved = value
1341
gobject.timeout_add(timedelta_to_milliseconds
882
self.send_changedstate()
883
self._approved = value
884
gobject.timeout_add(self._timedelta_to_milliseconds
1342
885
(self.approval_duration),
1343
886
self._reset_approved)
1344
self.send_changedstate()
887
1345
888
1346
889
## D-Bus methods, signals & properties
1347
_interface = "se.recompile.Mandos.Client"
1348
1349
## Interfaces
1350
1351
@dbus_interface_annotations(_interface)
1352
def _foo(self):
1353
return { "org.freedesktop.DBus.Property.EmitsChangedSignal":
1354
"false"}
890
_interface = "se.bsnet.fukt.Mandos.Client"
1355
891
1356
892
## Signals
1357
893
1443
979
if value is None: # get
1444
980
return dbus.Boolean(self.approved_by_default)
1445
981
self.approved_by_default = bool(value)
982
# Emit D-Bus signal
983
self.PropertyChanged(dbus.String("ApprovedByDefault"),
984
dbus.Boolean(value, variant_level=1))
1446
985
1447
986
# ApprovalDelay - property
1448
987
@dbus_service_property(_interface, signature="t",
1451
990
if value is None: # get
1452
991
return dbus.UInt64(self.approval_delay_milliseconds())
1453
992
self.approval_delay = datetime.timedelta(0, 0, 0, value)
993
# Emit D-Bus signal
994
self.PropertyChanged(dbus.String("ApprovalDelay"),
995
dbus.UInt64(value, variant_level=1))
1454
996
1455
997
# ApprovalDuration - property
1456
998
@dbus_service_property(_interface, signature="t",
1457
999
access="readwrite")
1458
1000
def ApprovalDuration_dbus_property(self, value=None):
1459
1001
if value is None: # get
1460
return dbus.UInt64(timedelta_to_milliseconds(
1002
return dbus.UInt64(self._timedelta_to_milliseconds(
1461
1003
self.approval_duration))
1462
1004
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1005
# Emit D-Bus signal
1006
self.PropertyChanged(dbus.String("ApprovalDuration"),
1007
dbus.UInt64(value, variant_level=1))
1463
1008
1464
1009
# Name - property
1465
1010
@dbus_service_property(_interface, signature="s", access="read")
1477
1022
def Host_dbus_property(self, value=None):
1478
1023
if value is None: # get
1479
1024
return dbus.String(self.host)
1480
self.host = unicode(value)
1025
self.host = value
1026
# Emit D-Bus signal
1027
self.PropertyChanged(dbus.String("Host"),
1028
dbus.String(value, variant_level=1))
1481
1029
1482
1030
# Created - property
1483
1031
@dbus_service_property(_interface, signature="s", access="read")
1484
1032
def Created_dbus_property(self):
1485
return datetime_to_dbus(self.created)
1033
return dbus.String(self._datetime_to_dbus(self.created))
1486
1034
1487
1035
# LastEnabled - property
1488
1036
@dbus_service_property(_interface, signature="s", access="read")
1489
1037
def LastEnabled_dbus_property(self):
1490
return datetime_to_dbus(self.last_enabled)
1038
if self.last_enabled is None:
1039
return dbus.String("")
1040
return dbus.String(self._datetime_to_dbus(self.last_enabled))
1491
1041
1492
1042
# Enabled - property
1493
1043
@dbus_service_property(_interface, signature="b",
1507
1057
if value is not None:
1508
1058
self.checked_ok()
1509
1059
return
1510
return datetime_to_dbus(self.last_checked_ok)
1511
1512
# LastCheckerStatus - property
1513
@dbus_service_property(_interface, signature="n",
1514
access="read")
1515
def LastCheckerStatus_dbus_property(self):
1516
return dbus.Int16(self.last_checker_status)
1517
1518
# Expires - property
1519
@dbus_service_property(_interface, signature="s", access="read")
1520
def Expires_dbus_property(self):
1521
return datetime_to_dbus(self.expires)
1060
if self.last_checked_ok is None:
1061
return dbus.String("")
1062
return dbus.String(self._datetime_to_dbus(self
1063
.last_checked_ok))
1522
1064
1523
1065
# LastApprovalRequest - property
1524
1066
@dbus_service_property(_interface, signature="s", access="read")
1525
1067
def LastApprovalRequest_dbus_property(self):
1526
return datetime_to_dbus(self.last_approval_request)
1068
if self.last_approval_request is None:
1069
return dbus.String("")
1070
return dbus.String(self.
1071
_datetime_to_dbus(self
1072
.last_approval_request))
1527
1073
1528
1074
# Timeout - property
1529
1075
@dbus_service_property(_interface, signature="t",
1531
1077
def Timeout_dbus_property(self, value=None):
1532
1078
if value is None: # get
1533
1079
return dbus.UInt64(self.timeout_milliseconds())
1534
old_timeout = self.timeout
1535
1080
self.timeout = datetime.timedelta(0, 0, 0, value)
1536
# Reschedule disabling
1537
if self.enabled:
1538
now = datetime.datetime.utcnow()
1539
self.expires += self.timeout - old_timeout
1540
if self.expires <= now:
1541
# The timeout has passed
1542
self.disable()
1543
else:
1544
if (getattr(self, "disable_initiator_tag", None)
1545
is None):
1546
return
1547
gobject.source_remove(self.disable_initiator_tag)
1548
self.disable_initiator_tag = (
1549
gobject.timeout_add(
1550
timedelta_to_milliseconds(self.expires - now),
1551
self.disable))
1552
1553
# ExtendedTimeout - property
1554
@dbus_service_property(_interface, signature="t",
1555
access="readwrite")
1556
def ExtendedTimeout_dbus_property(self, value=None):
1557
if value is None: # get
1558
return dbus.UInt64(self.extended_timeout_milliseconds())
1559
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1081
# Emit D-Bus signal
1082
self.PropertyChanged(dbus.String("Timeout"),
1083
dbus.UInt64(value, variant_level=1))
1084
if getattr(self, "disable_initiator_tag", None) is None:
1085
return
1086
# Reschedule timeout
1087
gobject.source_remove(self.disable_initiator_tag)
1088
self.disable_initiator_tag = None
1089
time_to_die = (self.
1090
_timedelta_to_milliseconds((self
1091
.last_checked_ok
1092
+ self.timeout)
1093
- datetime.datetime
1094
.utcnow()))
1095
if time_to_die <= 0:
1096
# The timeout has passed
1097
self.disable()
1098
else:
1099
self.disable_initiator_tag = (gobject.timeout_add
1100
(time_to_die, self.disable))
1560
1101
1561
1102
# Interval - property
1562
1103
@dbus_service_property(_interface, signature="t",
1565
1106
if value is None: # get
1566
1107
return dbus.UInt64(self.interval_milliseconds())
1567
1108
self.interval = datetime.timedelta(0, 0, 0, value)
1109
# Emit D-Bus signal
1110
self.PropertyChanged(dbus.String("Interval"),
1111
dbus.UInt64(value, variant_level=1))
1568
1112
if getattr(self, "checker_initiator_tag", None) is None:
1569
1113
return
1570
if self.enabled:
1571
# Reschedule checker run
1572
gobject.source_remove(self.checker_initiator_tag)
1573
self.checker_initiator_tag = (gobject.timeout_add
1574
(value, self.start_checker))
1575
self.start_checker() # Start one now, too
1576
1114
# Reschedule checker run
1115
gobject.source_remove(self.checker_initiator_tag)
1116
self.checker_initiator_tag = (gobject.timeout_add
1117
(value, self.start_checker))
1118
self.start_checker() # Start one now, too
1119
1577
1120
# Checker - property
1578
1121
@dbus_service_property(_interface, signature="s",
1579
1122
access="readwrite")
1580
1123
def Checker_dbus_property(self, value=None):
1581
1124
if value is None: # get
1582
1125
return dbus.String(self.checker_command)
1583
self.checker_command = unicode(value)
1126
self.checker_command = value
1127
# Emit D-Bus signal
1128
self.PropertyChanged(dbus.String("Checker"),
1129
dbus.String(self.checker_command,
1130
variant_level=1))
1584
1131
1585
1132
# CheckerRunning - property
1586
1133
@dbus_service_property(_interface, signature="b",
1613
1160
self._pipe.send(('init', fpr, address))
1614
1161
if not self._pipe.recv():
1615
1162
raise KeyError()
1616
1163
1617
1164
def __getattribute__(self, name):
1618
if name == '_pipe':
1165
if(name == '_pipe'):
1619
1166
return super(ProxyClient, self).__getattribute__(name)
1620
1167
self._pipe.send(('getattr', name))
1621
1168
data = self._pipe.recv()
1626
1173
self._pipe.send(('funcall', name, args, kwargs))
1627
1174
return self._pipe.recv()[1]
1628
1175
return func
1629
1176
1630
1177
def __setattr__(self, name, value):
1631
if name == '_pipe':
1178
if(name == '_pipe'):
1632
1179
return super(ProxyClient, self).__setattr__(name, value)
1633
1180
self._pipe.send(('setattr', name, value))
1634
1181
1645
1192
unicode(self.client_address))
1646
1193
logger.debug("Pipe FD: %d",
1647
1194
self.server.child_pipe.fileno())
1648
1195
1649
1196
session = (gnutls.connection
1650
1197
.ClientSession(self.request,
1651
1198
gnutls.connection
1652
1199
.X509Credentials()))
1653
1200
1654
1201
# Note: gnutls.connection.X509Credentials is really a
1655
1202
# generic GnuTLS certificate credentials object so long as
1656
1203
# no X.509 keys are added to it. Therefore, we can use it
1657
1204
# here despite using OpenPGP certificates.
1658
1205
1659
1206
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1660
1207
# "+AES-256-CBC", "+SHA1",
1661
1208
# "+COMP-NULL", "+CTYPE-OPENPGP",
1667
1214
(gnutls.library.functions
1668
1215
.gnutls_priority_set_direct(session._c_object,
1669
1216
priority, None))
1670
1217
1671
1218
# Start communication using the Mandos protocol
1672
1219
# Get protocol number
1673
1220
line = self.request.makefile().readline()
1678
1225
except (ValueError, IndexError, RuntimeError) as error:
1679
1226
logger.error("Unknown protocol version: %s", error)
1680
1227
return
1681
1228
1682
1229
# Start GnuTLS connection
1683
1230
try:
1684
1231
session.handshake()
1688
1235
# established. Just abandon the request.
1689
1236
return
1690
1237
logger.debug("Handshake succeeded")
1691
1238
1692
1239
approval_required = False
1693
1240
try:
1694
1241
try:
1699
1246
logger.warning("Bad certificate: %s", error)
1700
1247
return
1701
1248
logger.debug("Fingerprint: %s", fpr)
1702
1249
1703
1250
try:
1704
1251
client = ProxyClient(child_pipe, fpr,
1705
1252
self.client_address)
1713
1260
1714
1261
while True:
1715
1262
if not client.enabled:
1716
logger.info("Client %s is disabled",
1263
logger.warning("Client %s is disabled",
1717
1264
client.name)
1718
1265
if self.server.use_dbus:
1719
1266
# Emit D-Bus signal
1720
client.Rejected("Disabled")
1267
client.Rejected("Disabled")
1721
1268
return
1722
1269
1723
if client.approved or not client.approval_delay:
1270
if client._approved or not client.approval_delay:
1724
1271
#We are approved or approval is disabled
1725
1272
break
1726
elif client.approved is None:
1273
elif client._approved is None:
1727
1274
logger.info("Client %s needs approval",
1728
1275
client.name)
1729
1276
if self.server.use_dbus:
1740
1287
return
1741
1288
1742
1289
#wait until timeout or approved
1290
#x = float(client._timedelta_to_milliseconds(delay))
1743
1291
time = datetime.datetime.now()
1744
1292
client.changedstate.acquire()
1745
client.changedstate.wait(
1746
float(timedelta_to_milliseconds(delay)
1747
/ 1000))
1293
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
1748
1294
client.changedstate.release()
1749
1295
time2 = datetime.datetime.now()
1750
1296
if (time2 - time) >= delay:
1766
1312
try:
1767
1313
sent = session.send(client.secret[sent_size:])
1768
1314
except gnutls.errors.GNUTLSError as error:
1769
logger.warning("gnutls send failed",
1770
exc_info=error)
1315
logger.warning("gnutls send failed")
1771
1316
return
1772
1317
logger.debug("Sent: %d, remaining: %d",
1773
1318
sent, len(client.secret)
1774
1319
- (sent_size + sent))
1775
1320
sent_size += sent
1776
1321
1777
1322
logger.info("Sending secret to %s", client.name)
1778
# bump the timeout using extended_timeout
1779
client.bump_timeout(client.extended_timeout)
1323
# bump the timeout as if seen
1324
client.checked_ok()
1780
1325
if self.server.use_dbus:
1781
1326
# Emit D-Bus signal
1782
1327
client.GotSecret()
1787
1332
try:
1788
1333
session.bye()
1789
1334
except gnutls.errors.GNUTLSError as error:
1790
logger.warning("GnuTLS bye failed",
1791
exc_info=error)
1335
logger.warning("GnuTLS bye failed")
1792
1336
1793
1337
@staticmethod
1794
1338
def peer_certificate(session):
1850
1394
# Convert the buffer to a Python bytestring
1851
1395
fpr = ctypes.string_at(buf, buf_len.value)
1852
1396
# Convert the bytestring to hexadecimal notation
1853
hex_fpr = binascii.hexlify(fpr).upper()
1397
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
1854
1398
return hex_fpr
1855
1399
1856
1400
1859
1403
def sub_process_main(self, request, address):
1860
1404
try:
1861
1405
self.finish_request(request, address)
1862
except Exception:
1406
except:
1863
1407
self.handle_error(request, address)
1864
1408
self.close_request(request)
1865
1409
1866
1410
def process_request(self, request, address):
1867
1411
"""Start a new process to process the request."""
1868
proc = multiprocessing.Process(target = self.sub_process_main,
1869
args = (request, address))
1870
proc.start()
1871
return proc
1872
1412
multiprocessing.Process(target = self.sub_process_main,
1413
args = (request, address)).start()
1873
1414
1874
1415
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1875
1416
""" adds a pipe to the MixIn """
1879
1420
This function creates a new pipe in self.pipe
1880
1421
"""
1881
1422
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1882
1883
proc = MultiprocessingMixIn.process_request(self, request,
1884
client_address)
1423
1424
super(MultiprocessingMixInWithPipe,
1425
self).process_request(request, client_address)
1885
1426
self.child_pipe.close()
1886
self.add_pipe(parent_pipe, proc)
1887
1888
def add_pipe(self, parent_pipe, proc):
1427
self.add_pipe(parent_pipe)
1428
1429
def add_pipe(self, parent_pipe):
1889
1430
"""Dummy function; override as necessary"""
1890
1431
raise NotImplementedError
1891
1432
1892
1893
1433
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1894
1434
socketserver.TCPServer, object):
1895
1435
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1900
1440
use_ipv6: Boolean; to use IPv6 or not
1901
1441
"""
1902
1442
def __init__(self, server_address, RequestHandlerClass,
1903
interface=None, use_ipv6=True, socketfd=None):
1904
"""If socketfd is set, use that file descriptor instead of
1905
creating a new one with socket.socket().
1906
"""
1443
interface=None, use_ipv6=True):
1907
1444
self.interface = interface
1908
1445
if use_ipv6:
1909
1446
self.address_family = socket.AF_INET6
1910
if socketfd is not None:
1911
# Save the file descriptor
1912
self.socketfd = socketfd
1913
# Save the original socket.socket() function
1914
self.socket_socket = socket.socket
1915
# To implement --socket, we monkey patch socket.socket.
1916
#
1917
# (When socketserver.TCPServer is a new-style class, we
1918
# could make self.socket into a property instead of monkey
1919
# patching socket.socket.)
1920
#
1921
# Create a one-time-only replacement for socket.socket()
1922
@functools.wraps(socket.socket)
1923
def socket_wrapper(*args, **kwargs):
1924
# Restore original function so subsequent calls are
1925
# not affected.
1926
socket.socket = self.socket_socket
1927
del self.socket_socket
1928
# This time only, return a new socket object from the
1929
# saved file descriptor.
1930
return socket.fromfd(self.socketfd, *args, **kwargs)
1931
# Replace socket.socket() function with wrapper
1932
socket.socket = socket_wrapper
1933
# The socketserver.TCPServer.__init__ will call
1934
# socket.socket(), which might be our replacement,
1935
# socket_wrapper(), if socketfd was set.
1936
1447
socketserver.TCPServer.__init__(self, server_address,
1937
1448
RequestHandlerClass)
1938
1939
1449
def server_bind(self):
1940
1450
"""This overrides the normal server_bind() function
1941
1451
to bind to an interface if one was specified, and also NOT to
1949
1459
try:
1950
1460
self.socket.setsockopt(socket.SOL_SOCKET,
1951
1461
SO_BINDTODEVICE,
1952
str(self.interface + '\0'))
1462
str(self.interface
1463
+ '\0'))
1953
1464
except socket.error as error:
1954
if error.errno == errno.EPERM:
1955
logger.error("No permission to bind to"
1956
" interface %s", self.interface)
1957
elif error.errno == errno.ENOPROTOOPT:
1465
if error[0] == errno.EPERM:
1466
logger.error("No permission to"
1467
" bind to interface %s",
1468
self.interface)
1469
elif error[0] == errno.ENOPROTOOPT:
1958
1470
logger.error("SO_BINDTODEVICE not available;"
1959
1471
" cannot bind to interface %s",
1960
1472
self.interface)
1961
elif error.errno == errno.ENODEV:
1962
logger.error("Interface %s does not exist,"
1963
" cannot bind", self.interface)
1964
1473
else:
1965
1474
raise
1966
1475
# Only bind(2) the socket if we really need to.
1996
1505
"""
1997
1506
def __init__(self, server_address, RequestHandlerClass,
1998
1507
interface=None, use_ipv6=True, clients=None,
1999
gnutls_priority=None, use_dbus=True, socketfd=None):
1508
gnutls_priority=None, use_dbus=True):
2000
1509
self.enabled = False
2001
1510
self.clients = clients
2002
1511
if self.clients is None:
2003
self.clients = {}
1512
self.clients = set()
2004
1513
self.use_dbus = use_dbus
2005
1514
self.gnutls_priority = gnutls_priority
2006
1515
IPv6_TCPServer.__init__(self, server_address,
2007
1516
RequestHandlerClass,
2008
1517
interface = interface,
2009
use_ipv6 = use_ipv6,
2010
socketfd = socketfd)
1518
use_ipv6 = use_ipv6)
2011
1519
def server_activate(self):
2012
1520
if self.enabled:
2013
1521
return socketserver.TCPServer.server_activate(self)
2014
2015
1522
def enable(self):
2016
1523
self.enabled = True
2017
2018
def add_pipe(self, parent_pipe, proc):
1524
def add_pipe(self, parent_pipe):
2019
1525
# Call "handle_ipc" for both data and EOF events
2020
1526
gobject.io_add_watch(parent_pipe.fileno(),
2021
1527
gobject.IO_IN | gobject.IO_HUP,
2022
1528
functools.partial(self.handle_ipc,
2023
parent_pipe =
2024
parent_pipe,
2025
proc = proc))
2026
1529
parent_pipe = parent_pipe))
1530
2027
1531
def handle_ipc(self, source, condition, parent_pipe=None,
2028
proc = None, client_object=None):
2029
# error, or the other end of multiprocessing.Pipe has closed
2030
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2031
# Wait for other process to exit
2032
proc.join()
1532
client_object=None):
1533
condition_names = {
1534
gobject.IO_IN: "IN", # There is data to read.
1535
gobject.IO_OUT: "OUT", # Data can be written (without
1536
# blocking).
1537
gobject.IO_PRI: "PRI", # There is urgent data to read.
1538
gobject.IO_ERR: "ERR", # Error condition.
1539
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1540
# broken, usually for pipes and
1541
# sockets).
1542
}
1543
conditions_string = ' | '.join(name
1544
for cond, name in
1545
condition_names.iteritems()
1546
if cond & condition)
1547
# error or the other end of multiprocessing.Pipe has closed
1548
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2033
1549
return False
2034
1550
2035
1551
# Read a request from the child
2040
1556
fpr = request[1]
2041
1557
address = request[2]
2042
1558
2043
for c in self.clients.itervalues():
1559
for c in self.clients:
2044
1560
if c.fingerprint == fpr:
2045
1561
client = c
2046
1562
break
2047
1563
else:
2048
logger.info("Client not found for fingerprint: %s, ad"
2049
"dress: %s", fpr, address)
1564
logger.warning("Client not found for fingerprint: %s, ad"
1565
"dress: %s", fpr, address)
2050
1566
if self.use_dbus:
2051
1567
# Emit D-Bus signal
2052
mandos_dbus_service.ClientNotFound(fpr,
2053
address[0])
1568
mandos_dbus_service.ClientNotFound(fpr, address[0])
2054
1569
parent_pipe.send(False)
2055
1570
return False
2056
1571
2057
1572
gobject.io_add_watch(parent_pipe.fileno(),
2058
1573
gobject.IO_IN | gobject.IO_HUP,
2059
1574
functools.partial(self.handle_ipc,
2060
parent_pipe =
2061
parent_pipe,
2062
proc = proc,
2063
client_object =
2064
client))
1575
parent_pipe = parent_pipe,
1576
client_object = client))
2065
1577
parent_pipe.send(True)
2066
# remove the old hook in favor of the new above hook on
2067
# same fileno
1578
# remove the old hook in favor of the new above hook on same fileno
2068
1579
return False
2069
1580
if command == 'funcall':
2070
1581
funcname = request[1]
2071
1582
args = request[2]
2072
1583
kwargs = request[3]
2073
1584
2074
parent_pipe.send(('data', getattr(client_object,
2075
funcname)(*args,
2076
**kwargs)))
2077
1585
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
1586
2078
1587
if command == 'getattr':
2079
1588
attrname = request[1]
2080
1589
if callable(client_object.__getattribute__(attrname)):
2081
1590
parent_pipe.send(('function',))
2082
1591
else:
2083
parent_pipe.send(('data', client_object
2084
.__getattribute__(attrname)))
1592
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
2085
1593
2086
1594
if command == 'setattr':
2087
1595
attrname = request[1]
2088
1596
value = request[2]
2089
1597
setattr(client_object, attrname, value)
2090
1598
2091
1599
return True
2092
1600
2093
1601
2094
def rfc3339_duration_to_delta(duration):
2095
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2096
2097
>>> rfc3339_duration_to_delta("P7D")
2098
datetime.timedelta(7)
2099
>>> rfc3339_duration_to_delta("PT60S")
2100
datetime.timedelta(0, 60)
2101
>>> rfc3339_duration_to_delta("PT60M")
2102
datetime.timedelta(0, 3600)
2103
>>> rfc3339_duration_to_delta("PT24H")
2104
datetime.timedelta(1)
2105
>>> rfc3339_duration_to_delta("P1W")
2106
datetime.timedelta(7)
2107
>>> rfc3339_duration_to_delta("PT5M30S")
2108
datetime.timedelta(0, 330)
2109
>>> rfc3339_duration_to_delta("P1DT3M20S")
2110
datetime.timedelta(1, 200)
2111
"""
2112
2113
# Parsing an RFC 3339 duration with regular expressions is not
2114
# possible - there would have to be multiple places for the same
2115
# values, like seconds. The current code, while more esoteric, is
2116
# cleaner without depending on a parsing library. If Python had a
2117
# built-in library for parsing we would use it, but we'd like to
2118
# avoid excessive use of external libraries.
2119
2120
# New type for defining tokens, syntax, and semantics all-in-one
2121
Token = collections.namedtuple("Token",
2122
("regexp", # To match token; if
2123
# "value" is not None,
2124
# must have a "group"
2125
# containing digits
2126
"value", # datetime.timedelta or
2127
# None
2128
"followers")) # Tokens valid after
2129
# this token
2130
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2131
# the "duration" ABNF definition in RFC 3339, Appendix A.
2132
token_end = Token(re.compile(r"$"), None, frozenset())
2133
token_second = Token(re.compile(r"(\d+)S"),
2134
datetime.timedelta(seconds=1),
2135
frozenset((token_end,)))
2136
token_minute = Token(re.compile(r"(\d+)M"),
2137
datetime.timedelta(minutes=1),
2138
frozenset((token_second, token_end)))
2139
token_hour = Token(re.compile(r"(\d+)H"),
2140
datetime.timedelta(hours=1),
2141
frozenset((token_minute, token_end)))
2142
token_time = Token(re.compile(r"T"),
2143
None,
2144
frozenset((token_hour, token_minute,
2145
token_second)))
2146
token_day = Token(re.compile(r"(\d+)D"),
2147
datetime.timedelta(days=1),
2148
frozenset((token_time, token_end)))
2149
token_month = Token(re.compile(r"(\d+)M"),
2150
datetime.timedelta(weeks=4),
2151
frozenset((token_day, token_end)))
2152
token_year = Token(re.compile(r"(\d+)Y"),
2153
datetime.timedelta(weeks=52),
2154
frozenset((token_month, token_end)))
2155
token_week = Token(re.compile(r"(\d+)W"),
2156
datetime.timedelta(weeks=1),
2157
frozenset((token_end,)))
2158
token_duration = Token(re.compile(r"P"), None,
2159
frozenset((token_year, token_month,
2160
token_day, token_time,
2161
token_week))),
2162
# Define starting values
2163
value = datetime.timedelta() # Value so far
2164
found_token = None
2165
followers = frozenset(token_duration,) # Following valid tokens
2166
s = duration # String left to parse
2167
# Loop until end token is found
2168
while found_token is not token_end:
2169
# Search for any currently valid tokens
2170
for token in followers:
2171
match = token.regexp.match(s)
2172
if match is not None:
2173
# Token found
2174
if token.value is not None:
2175
# Value found, parse digits
2176
factor = int(match.group(1), 10)
2177
# Add to value so far
2178
value += factor * token.value
2179
# Strip token from string
2180
s = token.regexp.sub("", s, 1)
2181
# Go to found token
2182
found_token = token
2183
# Set valid next tokens
2184
followers = found_token.followers
2185
break
2186
else:
2187
# No currently valid tokens were found
2188
raise ValueError("Invalid RFC 3339 duration")
2189
# End token found
2190
return value
2191
2192
2193
1602
def string_to_delta(interval):
2194
1603
"""Parse a string and return a datetime.timedelta
2195
1604
2206
1615
>>> string_to_delta('5m 30s')
2207
1616
datetime.timedelta(0, 330)
2208
1617
"""
2209
2210
try:
2211
return rfc3339_duration_to_delta(interval)
2212
except ValueError:
2213
pass
2214
2215
1618
timevalue = datetime.timedelta(0)
2216
1619
for s in interval.split():
2217
1620
try:
2228
1631
elif suffix == "w":
2229
1632
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2230
1633
else:
2231
raise ValueError("Unknown suffix {0!r}"
2232
.format(suffix))
1634
raise ValueError("Unknown suffix %r" % suffix)
2233
1635
except (ValueError, IndexError) as e:
2234
1636
raise ValueError(*(e.args))
2235
1637
timevalue += delta
2236
1638
return timevalue
2237
1639
2238
1640
1641
def if_nametoindex(interface):
1642
"""Call the C function if_nametoindex(), or equivalent
1643
1644
Note: This function cannot accept a unicode string."""
1645
global if_nametoindex
1646
try:
1647
if_nametoindex = (ctypes.cdll.LoadLibrary
1648
(ctypes.util.find_library("c"))
1649
.if_nametoindex)
1650
except (OSError, AttributeError):
1651
logger.warning("Doing if_nametoindex the hard way")
1652
def if_nametoindex(interface):
1653
"Get an interface index the hard way, i.e. using fcntl()"
1654
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1655
with contextlib.closing(socket.socket()) as s:
1656
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1657
struct.pack(str("16s16x"),
1658
interface))
1659
interface_index = struct.unpack(str("I"),
1660
ifreq[16:20])[0]
1661
return interface_index
1662
return if_nametoindex(interface)
1663
1664
2239
1665
def daemon(nochdir = False, noclose = False):
2240
1666
"""See daemon(3). Standard BSD Unix function.
2241
1667
2249
1675
sys.exit()
2250
1676
if not noclose:
2251
1677
# Close all standard open file descriptors
2252
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1678
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2253
1679
if not stat.S_ISCHR(os.fstat(null).st_mode):
2254
1680
raise OSError(errno.ENODEV,
2255
"{0} not a character device"
2256
.format(os.devnull))
1681
"%s not a character device"
1682
% os.path.devnull)
2257
1683
os.dup2(null, sys.stdin.fileno())
2258
1684
os.dup2(null, sys.stdout.fileno())
2259
1685
os.dup2(null, sys.stderr.fileno())
2268
1694
2269
1695
parser = argparse.ArgumentParser()
2270
1696
parser.add_argument("-v", "--version", action="version",
2271
version = "%(prog)s {0}".format(version),
1697
version = "%%(prog)s %s" % version,
2272
1698
help="show version number and exit")
2273
1699
parser.add_argument("-i", "--interface", metavar="IF",
2274
1700
help="Bind to interface IF")
2296
1722
" system bus interface")
2297
1723
parser.add_argument("--no-ipv6", action="store_false",
2298
1724
dest="use_ipv6", help="Do not use IPv6")
2299
parser.add_argument("--no-restore", action="store_false",
2300
dest="restore", help="Do not restore stored"
2301
" state")
2302
parser.add_argument("--socket", type=int,
2303
help="Specify a file descriptor to a network"
2304
" socket to use instead of creating one")
2305
parser.add_argument("--statedir", metavar="DIR",
2306
help="Directory to save/restore state in")
2307
parser.add_argument("--foreground", action="store_true",
2308
help="Run in foreground")
2309
2310
1725
options = parser.parse_args()
2311
1726
2312
1727
if options.check:
2325
1740
"use_dbus": "True",
2326
1741
"use_ipv6": "True",
2327
1742
"debuglevel": "",
2328
"restore": "True",
2329
"socket": "",
2330
"statedir": "/var/lib/mandos",
2331
"foreground": "False",
2332
1743
}
2333
1744
2334
1745
# Parse config file for server-global settings
2339
1750
# Convert the SafeConfigParser object to a dict
2340
1751
server_settings = server_config.defaults()
2341
1752
# Use the appropriate methods on the non-string config options
2342
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
1753
for option in ("debug", "use_dbus", "use_ipv6"):
2343
1754
server_settings[option] = server_config.getboolean("DEFAULT",
2344
1755
option)
2345
1756
if server_settings["port"]:
2346
1757
server_settings["port"] = server_config.getint("DEFAULT",
2347
1758
"port")
2348
if server_settings["socket"]:
2349
server_settings["socket"] = server_config.getint("DEFAULT",
2350
"socket")
2351
# Later, stdin will, and stdout and stderr might, be dup'ed
2352
# over with an opened os.devnull. But we don't want this to
2353
# happen with a supplied network socket.
2354
if 0 <= server_settings["socket"] <= 2:
2355
server_settings["socket"] = os.dup(server_settings
2356
["socket"])
2357
1759
del server_config
2358
1760
2359
1761
# Override the settings from the config file with command line
2360
1762
# options, if set.
2361
1763
for option in ("interface", "address", "port", "debug",
2362
1764
"priority", "servicename", "configdir",
2363
"use_dbus", "use_ipv6", "debuglevel", "restore",
2364
"statedir", "socket", "foreground"):
1765
"use_dbus", "use_ipv6", "debuglevel"):
2365
1766
value = getattr(options, option)
2366
1767
if value is not None:
2367
1768
server_settings[option] = value
2370
1771
for option in server_settings.keys():
2371
1772
if type(server_settings[option]) is str:
2372
1773
server_settings[option] = unicode(server_settings[option])
2373
# Debug implies foreground
2374
if server_settings["debug"]:
2375
server_settings["foreground"] = True
2376
1774
# Now we have our good server settings in "server_settings"
2377
1775
2378
1776
##################################################################
2382
1780
debuglevel = server_settings["debuglevel"]
2383
1781
use_dbus = server_settings["use_dbus"]
2384
1782
use_ipv6 = server_settings["use_ipv6"]
2385
stored_state_path = os.path.join(server_settings["statedir"],
2386
stored_state_file)
2387
foreground = server_settings["foreground"]
2388
2389
if debug:
2390
initlogger(debug, logging.DEBUG)
2391
else:
2392
if not debuglevel:
2393
initlogger(debug)
2394
else:
2395
level = getattr(logging, debuglevel.upper())
2396
initlogger(debug, level)
2397
1783
2398
1784
if server_settings["servicename"] != "Mandos":
2399
1785
syslogger.setFormatter(logging.Formatter
2400
('Mandos ({0}) [%(process)d]:'
2401
' %(levelname)s: %(message)s'
2402
.format(server_settings
2403
["servicename"])))
1786
('Mandos (%s) [%%(process)d]:'
1787
' %%(levelname)s: %%(message)s'
1788
% server_settings["servicename"]))
2404
1789
2405
1790
# Parse config file with clients
2406
client_config = configparser.SafeConfigParser(Client
2407
.client_defaults)
1791
client_defaults = { "timeout": "1h",
1792
"interval": "5m",
1793
"checker": "fping -q -- %%(host)s",
1794
"host": "",
1795
"approval_delay": "0s",
1796
"approval_duration": "1s",
1797
}
1798
client_config = configparser.SafeConfigParser(client_defaults)
2408
1799
client_config.read(os.path.join(server_settings["configdir"],
2409
1800
"clients.conf"))
2410
1801
2419
1810
use_ipv6=use_ipv6,
2420
1811
gnutls_priority=
2421
1812
server_settings["priority"],
2422
use_dbus=use_dbus,
2423
socketfd=(server_settings["socket"]
2424
or None))
2425
if not foreground:
1813
use_dbus=use_dbus)
1814
if not debug:
2426
1815
pidfilename = "/var/run/mandos.pid"
2427
pidfile = None
2428
1816
try:
2429
1817
pidfile = open(pidfilename, "w")
2430
except IOError as e:
2431
logger.error("Could not open file %r", pidfilename,
2432
exc_info=e)
1818
except IOError:
1819
logger.error("Could not open file %r", pidfilename)
2433
1820
2434
for name in ("_mandos", "mandos", "nobody"):
1821
try:
1822
uid = pwd.getpwnam("_mandos").pw_uid
1823
gid = pwd.getpwnam("_mandos").pw_gid
1824
except KeyError:
2435
1825
try:
2436
uid = pwd.getpwnam(name).pw_uid
2437
gid = pwd.getpwnam(name).pw_gid
2438
break
1826
uid = pwd.getpwnam("mandos").pw_uid
1827
gid = pwd.getpwnam("mandos").pw_gid
2439
1828
except KeyError:
2440
continue
2441
else:
2442
uid = 65534
2443
gid = 65534
1829
try:
1830
uid = pwd.getpwnam("nobody").pw_uid
1831
gid = pwd.getpwnam("nobody").pw_gid
1832
except KeyError:
1833
uid = 65534
1834
gid = 65534
2444
1835
try:
2445
1836
os.setgid(gid)
2446
1837
os.setuid(uid)
2447
1838
except OSError as error:
2448
if error.errno != errno.EPERM:
1839
if error[0] != errno.EPERM:
2449
1840
raise error
2450
1841
1842
if not debug and not debuglevel:
1843
syslogger.setLevel(logging.WARNING)
1844
console.setLevel(logging.WARNING)
1845
if debuglevel:
1846
level = getattr(logging, debuglevel.upper())
1847
syslogger.setLevel(level)
1848
console.setLevel(level)
1849
2451
1850
if debug:
2452
1851
# Enable all possible GnuTLS debugging
2453
1852
2463
1862
.gnutls_global_set_log_function(debug_gnutls))
2464
1863
2465
1864
# Redirect stdin so all checkers get /dev/null
2466
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1865
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2467
1866
os.dup2(null, sys.stdin.fileno())
2468
1867
if null > 2:
2469
1868
os.close(null)
1869
else:
1870
# No console logging
1871
logger.removeHandler(console)
2470
1872
2471
1873
# Need to fork before connecting to D-Bus
2472
if not foreground:
1874
if not debug:
2473
1875
# Close all input and output, do double fork, etc.
2474
1876
daemon()
2475
1877
2476
# multiprocessing will use threads, so before we use gobject we
2477
# need to inform gobject that threads will be used.
2478
gobject.threads_init()
2479
2480
1878
global main_loop
2481
1879
# From the Avahi example code
2482
DBusGMainLoop(set_as_default=True)
1880
DBusGMainLoop(set_as_default=True )
2483
1881
main_loop = gobject.MainLoop()
2484
1882
bus = dbus.SystemBus()
2485
1883
# End of Avahi example code
2486
1884
if use_dbus:
2487
1885
try:
2488
bus_name = dbus.service.BusName("se.recompile.Mandos",
1886
bus_name = dbus.service.BusName("se.bsnet.fukt.Mandos",
2489
1887
bus, do_not_queue=True)
2490
old_bus_name = (dbus.service.BusName
2491
("se.bsnet.fukt.Mandos", bus,
2492
do_not_queue=True))
2493
1888
except dbus.exceptions.NameExistsException as e:
2494
logger.error("Disabling D-Bus:", exc_info=e)
1889
logger.error(unicode(e) + ", disabling D-Bus")
2495
1890
use_dbus = False
2496
1891
server_settings["use_dbus"] = False
2497
1892
tcp_server.use_dbus = False
2498
1893
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2499
service = AvahiServiceToSyslog(name =
2500
server_settings["servicename"],
2501
servicetype = "_mandos._tcp",
2502
protocol = protocol, bus = bus)
1894
service = AvahiService(name = server_settings["servicename"],
1895
servicetype = "_mandos._tcp",
1896
protocol = protocol, bus = bus)
2503
1897
if server_settings["interface"]:
2504
1898
service.interface = (if_nametoindex
2505
1899
(str(server_settings["interface"])))
2510
1904
client_class = Client
2511
1905
if use_dbus:
2512
1906
client_class = functools.partial(ClientDBus, bus = bus)
2513
2514
client_settings = Client.config_parser(client_config)
2515
old_client_settings = {}
2516
clients_data = {}
2517
2518
# Get client data and settings from last running state.
2519
if server_settings["restore"]:
2520
try:
2521
with open(stored_state_path, "rb") as stored_state:
2522
clients_data, old_client_settings = (pickle.load
2523
(stored_state))
2524
os.remove(stored_state_path)
2525
except IOError as e:
2526
if e.errno == errno.ENOENT:
2527
logger.warning("Could not load persistent state: {0}"
2528
.format(os.strerror(e.errno)))
2529
else:
2530
logger.critical("Could not load persistent state:",
2531
exc_info=e)
2532
raise
2533
except EOFError as e:
2534
logger.warning("Could not load persistent state: "
2535
"EOFError:", exc_info=e)
2536
2537
with PGPEngine() as pgp:
2538
for client_name, client in clients_data.iteritems():
2539
# Decide which value to use after restoring saved state.
2540
# We have three different values: Old config file,
2541
# new config file, and saved state.
2542
# New config value takes precedence if it differs from old
2543
# config value, otherwise use saved state.
2544
for name, value in client_settings[client_name].items():
2545
try:
2546
# For each value in new config, check if it
2547
# differs from the old config value (Except for
2548
# the "secret" attribute)
2549
if (name != "secret" and
2550
value != old_client_settings[client_name]
2551
[name]):
2552
client[name] = value
2553
except KeyError:
2554
pass
2555
2556
# Clients who has passed its expire date can still be
2557
# enabled if its last checker was successful. Clients
2558
# whose checker succeeded before we stored its state is
2559
# assumed to have successfully run all checkers during
2560
# downtime.
2561
if client["enabled"]:
2562
if datetime.datetime.utcnow() >= client["expires"]:
2563
if not client["last_checked_ok"]:
2564
logger.warning(
2565
"disabling client {0} - Client never "
2566
"performed a successful checker"
2567
.format(client_name))
2568
client["enabled"] = False
2569
elif client["last_checker_status"] != 0:
2570
logger.warning(
2571
"disabling client {0} - Client "
2572
"last checker failed with error code {1}"
2573
.format(client_name,
2574
client["last_checker_status"]))
2575
client["enabled"] = False
2576
else:
2577
client["expires"] = (datetime.datetime
2578
.utcnow()
2579
+ client["timeout"])
2580
logger.debug("Last checker succeeded,"
2581
" keeping {0} enabled"
2582
.format(client_name))
1907
def client_config_items(config, section):
1908
special_settings = {
1909
"approved_by_default":
1910
lambda: config.getboolean(section,
1911
"approved_by_default"),
1912
}
1913
for name, value in config.items(section):
2583
1914
try:
2584
client["secret"] = (
2585
pgp.decrypt(client["encrypted_secret"],
2586
client_settings[client_name]
2587
["secret"]))
2588
except PGPError:
2589
# If decryption fails, we use secret from new settings
2590
logger.debug("Failed to decrypt {0} old secret"
2591
.format(client_name))
2592
client["secret"] = (
2593
client_settings[client_name]["secret"])
2594
2595
# Add/remove clients based on new changes made to config
2596
for client_name in (set(old_client_settings)
2597
- set(client_settings)):
2598
del clients_data[client_name]
2599
for client_name in (set(client_settings)
2600
- set(old_client_settings)):
2601
clients_data[client_name] = client_settings[client_name]
2602
2603
# Create all client objects
2604
for client_name, client in clients_data.iteritems():
2605
tcp_server.clients[client_name] = client_class(
2606
name = client_name, settings = client)
2607
1915
yield (name, special_settings[name]())
1916
except KeyError:
1917
yield (name, value)
1918
1919
tcp_server.clients.update(set(
1920
client_class(name = section,
1921
config= dict(client_config_items(
1922
client_config, section)))
1923
for section in client_config.sections()))
2608
1924
if not tcp_server.clients:
2609
1925
logger.warning("No clients defined")
2610
2611
if not foreground:
2612
if pidfile is not None:
2613
try:
2614
with pidfile:
2615
pid = os.getpid()
2616
pidfile.write(str(pid) + "\n".encode("utf-8"))
2617
except IOError:
2618
logger.error("Could not write to file %r with PID %d",
2619
pidfilename, pid)
2620
del pidfile
1926
1927
if not debug:
1928
try:
1929
with pidfile:
1930
pid = os.getpid()
1931
pidfile.write(str(pid) + "\n".encode("utf-8"))
1932
del pidfile
1933
except IOError:
1934
logger.error("Could not write to file %r with PID %d",
1935
pidfilename, pid)
1936
except NameError:
1937
# "pidfile" was never created
1938
pass
2621
1939
del pidfilename
2622
1940
1941
signal.signal(signal.SIGINT, signal.SIG_IGN)
1942
2623
1943
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2624
1944
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2625
1945
2626
1946
if use_dbus:
2627
@alternate_dbus_interfaces({"se.recompile.Mandos":
2628
"se.bsnet.fukt.Mandos"})
2629
class MandosDBusService(DBusObjectWithProperties):
1947
class MandosDBusService(dbus.service.Object):
2630
1948
"""A D-Bus proxy object"""
2631
1949
def __init__(self):
2632
1950
dbus.service.Object.__init__(self, bus, "/")
2633
_interface = "se.recompile.Mandos"
2634
2635
@dbus_interface_annotations(_interface)
2636
def _foo(self):
2637
return { "org.freedesktop.DBus.Property"
2638
".EmitsChangedSignal":
2639
"false"}
1951
_interface = "se.bsnet.fukt.Mandos"
2640
1952
2641
1953
@dbus.service.signal(_interface, signature="o")
2642
1954
def ClientAdded(self, objpath):
2657
1969
def GetAllClients(self):
2658
1970
"D-Bus method"
2659
1971
return dbus.Array(c.dbus_object_path
2660
for c in
2661
tcp_server.clients.itervalues())
1972
for c in tcp_server.clients)
2662
1973
2663
1974
@dbus.service.method(_interface,
2664
1975
out_signature="a{oa{sv}}")
2666
1977
"D-Bus method"
2667
1978
return dbus.Dictionary(
2668
1979
((c.dbus_object_path, c.GetAll(""))
2669
for c in tcp_server.clients.itervalues()),
1980
for c in tcp_server.clients),
2670
1981
signature="oa{sv}")
2671
1982
2672
1983
@dbus.service.method(_interface, in_signature="o")
2673
1984
def RemoveClient(self, object_path):
2674
1985
"D-Bus method"
2675
for c in tcp_server.clients.itervalues():
1986
for c in tcp_server.clients:
2676
1987
if c.dbus_object_path == object_path:
2677
del tcp_server.clients[c.name]
1988
tcp_server.clients.remove(c)
2678
1989
c.remove_from_connection()
2679
1990
# Don't signal anything except ClientRemoved
2680
1991
c.disable(quiet=True)
2691
2002
"Cleanup function; run on exit"
2692
2003
service.cleanup()
2693
2004
2694
multiprocessing.active_children()
2695
if not (tcp_server.clients or client_settings):
2696
return
2697
2698
# Store client before exiting. Secrets are encrypted with key
2699
# based on what config file has. If config file is
2700
# removed/edited, old secret will thus be unrecovable.
2701
clients = {}
2702
with PGPEngine() as pgp:
2703
for client in tcp_server.clients.itervalues():
2704
key = client_settings[client.name]["secret"]
2705
client.encrypted_secret = pgp.encrypt(client.secret,
2706
key)
2707
client_dict = {}
2708
2709
# A list of attributes that can not be pickled
2710
# + secret.
2711
exclude = set(("bus", "changedstate", "secret",
2712
"checker"))
2713
for name, typ in (inspect.getmembers
2714
(dbus.service.Object)):
2715
exclude.add(name)
2716
2717
client_dict["encrypted_secret"] = (client
2718
.encrypted_secret)
2719
for attr in client.client_structure:
2720
if attr not in exclude:
2721
client_dict[attr] = getattr(client, attr)
2722
2723
clients[client.name] = client_dict
2724
del client_settings[client.name]["secret"]
2725
2726
try:
2727
with (tempfile.NamedTemporaryFile
2728
(mode='wb', suffix=".pickle", prefix='clients-',
2729
dir=os.path.dirname(stored_state_path),
2730
delete=False)) as stored_state:
2731
pickle.dump((clients, client_settings), stored_state)
2732
tempname=stored_state.name
2733
os.rename(tempname, stored_state_path)
2734
except (IOError, OSError) as e:
2735
if not debug:
2736
try:
2737
os.remove(tempname)
2738
except NameError:
2739
pass
2740
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
2741
logger.warning("Could not save persistent state: {0}"
2742
.format(os.strerror(e.errno)))
2743
else:
2744
logger.warning("Could not save persistent state:",
2745
exc_info=e)
2746
raise e
2747
2748
# Delete all clients, and settings from config
2749
2005
while tcp_server.clients:
2750
name, client = tcp_server.clients.popitem()
2006
client = tcp_server.clients.pop()
2751
2007
if use_dbus:
2752
2008
client.remove_from_connection()
2009
client.disable_hook = None
2753
2010
# Don't signal anything except ClientRemoved
2754
2011
client.disable(quiet=True)
2755
2012
if use_dbus:
2756
2013
# Emit D-Bus signal
2757
mandos_dbus_service.ClientRemoved(client
2758
.dbus_object_path,
2014
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
2759
2015
client.name)
2760
client_settings.clear()
2761
2016
2762
2017
atexit.register(cleanup)
2763
2018
2764
for client in tcp_server.clients.itervalues():
2019
for client in tcp_server.clients:
2765
2020
if use_dbus:
2766
2021
# Emit D-Bus signal
2767
2022
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2768
# Need to initiate checking of clients
2769
if client.enabled:
2770
client.init_checker()
2023
client.enable()
2771
2024
2772
2025
tcp_server.enable()
2773
2026
tcp_server.server_activate()
2776
2029
service.port = tcp_server.socket.getsockname()[1]
2777
2030
if use_ipv6:
2778
2031
logger.info("Now listening on address %r, port %d,"
2779
" flowinfo %d, scope_id %d",
2780
*tcp_server.socket.getsockname())
2032
" flowinfo %d, scope_id %d"
2033
% tcp_server.socket.getsockname())
2781
2034
else: # IPv4
2782
logger.info("Now listening on address %r, port %d",
2783
*tcp_server.socket.getsockname())
2035
logger.info("Now listening on address %r, port %d"
2036
% tcp_server.socket.getsockname())
2784
2037
2785
2038
#service.interface = tcp_server.socket.getsockname()[3]
2786
2039
2789
2042
try:
2790
2043
service.activate()
2791
2044
except dbus.exceptions.DBusException as error:
2792
logger.critical("D-Bus Exception", exc_info=error)
2045
logger.critical("DBusException: %s", error)
2793
2046
cleanup()
2794
2047
sys.exit(1)
2795
2048
# End of Avahi example code
2802
2055
logger.debug("Starting main loop")
2803
2056
main_loop.run()
2804
2057
except AvahiError as error:
2805
logger.critical("Avahi Error", exc_info=error)
2058
logger.critical("AvahiError: %s", error)
2806
2059
cleanup()
2807
2060
sys.exit(1)
2808
2061
except KeyboardInterrupt:
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0