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- Committer: Teddy Hogeborn
- Date: 2011-10-02 13:47:52 UTC
- Revision ID: teddy@fukt.bsnet.se-20111002134752-c5g5ibcga4biz7ob
* plugins.d/plymouth.c (plymouth_pid): Changed to
"/run/initramfs/plymouth.pid".
(plymouth_old_pid): New; set to "/dev/.initramfs/plymouth.pid".
(get_pid): Try both 'plymouth_pid' and 'plymouth_old_pid'.
"/run/initramfs/plymouth.pid".
(plymouth_old_pid): New; set to "/dev/.initramfs/plymouth.pid".
(get_pid): Try both 'plymouth_pid' and 'plymouth_old_pid'.
- 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
65
72
66
import dbus
73
67
import dbus.service
78
72
import ctypes.util
79
73
import xml.dom.minidom
80
74
import inspect
81
import GnuPGInterface
82
75
83
76
try:
84
77
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
88
81
except ImportError:
89
82
SO_BINDTODEVICE = None
90
83
91
version = "1.5.5"
92
stored_state_file = "clients.pickle"
93
94
logger = logging.getLogger()
84
85
version = "1.3.1"
86
87
#logger = logging.getLogger('mandos')
88
logger = logging.Logger('mandos')
95
89
syslogger = (logging.handlers.SysLogHandler
96
90
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
97
91
address = str("/dev/log")))
98
99
try:
100
if_nametoindex = (ctypes.cdll.LoadLibrary
101
(ctypes.util.find_library("c"))
102
.if_nametoindex)
103
except (OSError, AttributeError):
104
def if_nametoindex(interface):
105
"Get an interface index the hard way, i.e. using fcntl()"
106
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
107
with contextlib.closing(socket.socket()) as s:
108
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
109
struct.pack(str("16s16x"),
110
interface))
111
interface_index = struct.unpack(str("I"),
112
ifreq[16:20])[0]
113
return interface_index
114
115
116
def initlogger(debug, level=logging.WARNING):
117
"""init logger and add loglevel"""
118
119
syslogger.setFormatter(logging.Formatter
120
('Mandos [%(process)d]: %(levelname)s:'
121
' %(message)s'))
122
logger.addHandler(syslogger)
123
124
if debug:
125
console = logging.StreamHandler()
126
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
127
' [%(process)d]:'
128
' %(levelname)s:'
129
' %(message)s'))
130
logger.addHandler(console)
131
logger.setLevel(level)
132
133
134
class PGPError(Exception):
135
"""Exception if encryption/decryption fails"""
136
pass
137
138
139
class PGPEngine(object):
140
"""A simple class for OpenPGP symmetric encryption & decryption"""
141
def __init__(self):
142
self.gnupg = GnuPGInterface.GnuPG()
143
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
144
self.gnupg = GnuPGInterface.GnuPG()
145
self.gnupg.options.meta_interactive = False
146
self.gnupg.options.homedir = self.tempdir
147
self.gnupg.options.extra_args.extend(['--force-mdc',
148
'--quiet',
149
'--no-use-agent'])
150
151
def __enter__(self):
152
return self
153
154
def __exit__(self, exc_type, exc_value, traceback):
155
self._cleanup()
156
return False
157
158
def __del__(self):
159
self._cleanup()
160
161
def _cleanup(self):
162
if self.tempdir is not None:
163
# Delete contents of tempdir
164
for root, dirs, files in os.walk(self.tempdir,
165
topdown = False):
166
for filename in files:
167
os.remove(os.path.join(root, filename))
168
for dirname in dirs:
169
os.rmdir(os.path.join(root, dirname))
170
# Remove tempdir
171
os.rmdir(self.tempdir)
172
self.tempdir = None
173
174
def password_encode(self, password):
175
# Passphrase can not be empty and can not contain newlines or
176
# NUL bytes. So we prefix it and hex encode it.
177
return b"mandos" + binascii.hexlify(password)
178
179
def encrypt(self, data, password):
180
self.gnupg.passphrase = self.password_encode(password)
181
with open(os.devnull, "w") as devnull:
182
try:
183
proc = self.gnupg.run(['--symmetric'],
184
create_fhs=['stdin', 'stdout'],
185
attach_fhs={'stderr': devnull})
186
with contextlib.closing(proc.handles['stdin']) as f:
187
f.write(data)
188
with contextlib.closing(proc.handles['stdout']) as f:
189
ciphertext = f.read()
190
proc.wait()
191
except IOError as e:
192
raise PGPError(e)
193
self.gnupg.passphrase = None
194
return ciphertext
195
196
def decrypt(self, data, password):
197
self.gnupg.passphrase = self.password_encode(password)
198
with open(os.devnull, "w") as devnull:
199
try:
200
proc = self.gnupg.run(['--decrypt'],
201
create_fhs=['stdin', 'stdout'],
202
attach_fhs={'stderr': devnull})
203
with contextlib.closing(proc.handles['stdin']) as f:
204
f.write(data)
205
with contextlib.closing(proc.handles['stdout']) as f:
206
decrypted_plaintext = f.read()
207
proc.wait()
208
except IOError as e:
209
raise PGPError(e)
210
self.gnupg.passphrase = None
211
return decrypted_plaintext
212
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)
213
102
214
103
class AvahiError(Exception):
215
104
def __init__(self, value, *args, **kwargs):
245
134
server: D-Bus Server
246
135
bus: dbus.SystemBus()
247
136
"""
248
249
137
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
250
138
servicetype = None, port = None, TXT = None,
251
139
domain = "", host = "", max_renames = 32768,
264
152
self.server = None
265
153
self.bus = bus
266
154
self.entry_group_state_changed_match = None
267
268
155
def rename(self):
269
156
"""Derived from the Avahi example code"""
270
157
if self.rename_count >= self.max_renames:
272
159
" after %i retries, exiting.",
273
160
self.rename_count)
274
161
raise AvahiServiceError("Too many renames")
275
self.name = unicode(self.server
276
.GetAlternativeServiceName(self.name))
162
self.name = unicode(self.server.GetAlternativeServiceName(self.name))
277
163
logger.info("Changing Zeroconf service name to %r ...",
278
164
self.name)
165
syslogger.setFormatter(logging.Formatter
166
('Mandos (%s) [%%(process)d]:'
167
' %%(levelname)s: %%(message)s'
168
% self.name))
279
169
self.remove()
280
170
try:
281
171
self.add()
282
172
except dbus.exceptions.DBusException as error:
283
logger.critical("D-Bus Exception", exc_info=error)
173
logger.critical("DBusException: %s", error)
284
174
self.cleanup()
285
175
os._exit(1)
286
176
self.rename_count += 1
287
288
177
def remove(self):
289
178
"""Derived from the Avahi example code"""
290
179
if self.entry_group_state_changed_match is not None:
292
181
self.entry_group_state_changed_match = None
293
182
if self.group is not None:
294
183
self.group.Reset()
295
296
184
def add(self):
297
185
"""Derived from the Avahi example code"""
298
186
self.remove()
303
191
avahi.DBUS_INTERFACE_ENTRY_GROUP)
304
192
self.entry_group_state_changed_match = (
305
193
self.group.connect_to_signal(
306
'StateChanged', self.entry_group_state_changed))
194
'StateChanged', self .entry_group_state_changed))
307
195
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
308
196
self.name, self.type)
309
197
self.group.AddService(
315
203
dbus.UInt16(self.port),
316
204
avahi.string_array_to_txt_array(self.TXT))
317
205
self.group.Commit()
318
319
206
def entry_group_state_changed(self, state, error):
320
207
"""Derived from the Avahi example code"""
321
208
logger.debug("Avahi entry group state change: %i", state)
328
215
elif state == avahi.ENTRY_GROUP_FAILURE:
329
216
logger.critical("Avahi: Error in group state changed %s",
330
217
unicode(error))
331
raise AvahiGroupError("State changed: {0!s}"
332
.format(error))
333
218
raise AvahiGroupError("State changed: %s"
219
% unicode(error))
334
220
def cleanup(self):
335
221
"""Derived from the Avahi example code"""
336
222
if self.group is not None:
337
223
try:
338
224
self.group.Free()
339
225
except (dbus.exceptions.UnknownMethodException,
340
dbus.exceptions.DBusException):
226
dbus.exceptions.DBusException) as e:
341
227
pass
342
228
self.group = None
343
229
self.remove()
344
345
230
def server_state_changed(self, state, error=None):
346
231
"""Derived from the Avahi example code"""
347
232
logger.debug("Avahi server state change: %i", state)
366
251
logger.debug("Unknown state: %r", state)
367
252
else:
368
253
logger.debug("Unknown state: %r: %r", state, error)
369
370
254
def activate(self):
371
255
"""Derived from the Avahi example code"""
372
256
if self.server is None:
380
264
self.server_state_changed(self.server.GetState())
381
265
382
266
383
class AvahiServiceToSyslog(AvahiService):
384
def rename(self):
385
"""Add the new name to the syslog messages"""
386
ret = AvahiService.rename(self)
387
syslogger.setFormatter(logging.Formatter
388
('Mandos ({0}) [%(process)d]:'
389
' %(levelname)s: %(message)s'
390
.format(self.name)))
391
return ret
392
393
394
def timedelta_to_milliseconds(td):
267
def _timedelta_to_milliseconds(td):
395
268
"Convert a datetime.timedelta() to milliseconds"
396
269
return ((td.days * 24 * 60 * 60 * 1000)
397
270
+ (td.seconds * 1000)
398
271
+ (td.microseconds // 1000))
399
400
272
401
273
class Client(object):
402
274
"""A representation of a client host served by this server.
403
275
404
276
Attributes:
405
approved: bool(); 'None' if not yet approved/disapproved
277
_approved: bool(); 'None' if not yet approved/disapproved
406
278
approval_delay: datetime.timedelta(); Time to wait for approval
407
279
approval_duration: datetime.timedelta(); Duration of one approval
408
280
checker: subprocess.Popen(); a running checker process used
415
287
instance %(name)s can be used in the command.
416
288
checker_initiator_tag: a gobject event source tag, or None
417
289
created: datetime.datetime(); (UTC) object creation
418
client_structure: Object describing what attributes a client has
419
and is used for storing the client at exit
420
290
current_checker_command: string; current running checker_command
291
disable_hook: If set, called by disable() as disable_hook(self)
421
292
disable_initiator_tag: a gobject event source tag, or None
422
293
enabled: bool()
423
294
fingerprint: string (40 or 32 hexadecimal digits); used to
426
297
interval: datetime.timedelta(); How often to start a new checker
427
298
last_approval_request: datetime.datetime(); (UTC) or None
428
299
last_checked_ok: datetime.datetime(); (UTC) or None
429
last_checker_status: integer between 0 and 255 reflecting exit
430
status of last checker. -1 reflects crashed
431
checker, -2 means no checker completed yet.
432
last_enabled: datetime.datetime(); (UTC) or None
300
last_enabled: datetime.datetime(); (UTC)
433
301
name: string; from the config file, used in log messages and
434
302
D-Bus identifiers
435
303
secret: bytestring; sent verbatim (over TLS) to client
436
304
timeout: datetime.timedelta(); How long from last_checked_ok
437
305
until this client is disabled
438
extended_timeout: extra long timeout when secret has been sent
306
extended_timeout: extra long timeout when password has been sent
439
307
runtime_expansions: Allowed attributes for runtime expansion.
440
308
expires: datetime.datetime(); time (UTC) when a client will be
441
309
disabled, or None
442
310
"""
443
311
444
312
runtime_expansions = ("approval_delay", "approval_duration",
445
"created", "enabled", "expires",
446
"fingerprint", "host", "interval",
447
"last_approval_request", "last_checked_ok",
313
"created", "enabled", "fingerprint",
314
"host", "interval", "last_checked_ok",
448
315
"last_enabled", "name", "timeout")
449
client_defaults = { "timeout": "5m",
450
"extended_timeout": "15m",
451
"interval": "2m",
452
"checker": "fping -q -- %%(host)s",
453
"host": "",
454
"approval_delay": "0s",
455
"approval_duration": "1s",
456
"approved_by_default": "True",
457
"enabled": "True",
458
}
459
316
460
317
def timeout_milliseconds(self):
461
318
"Return the 'timeout' attribute in milliseconds"
462
return timedelta_to_milliseconds(self.timeout)
319
return _timedelta_to_milliseconds(self.timeout)
463
320
464
321
def extended_timeout_milliseconds(self):
465
322
"Return the 'extended_timeout' attribute in milliseconds"
466
return timedelta_to_milliseconds(self.extended_timeout)
323
return _timedelta_to_milliseconds(self.extended_timeout)
467
324
468
325
def interval_milliseconds(self):
469
326
"Return the 'interval' attribute in milliseconds"
470
return timedelta_to_milliseconds(self.interval)
327
return _timedelta_to_milliseconds(self.interval)
471
328
472
329
def approval_delay_milliseconds(self):
473
return timedelta_to_milliseconds(self.approval_delay)
474
475
@staticmethod
476
def config_parser(config):
477
"""Construct a new dict of client settings of this form:
478
{ client_name: {setting_name: value, ...}, ...}
479
with exceptions for any special settings as defined above.
480
NOTE: Must be a pure function. Must return the same result
481
value given the same arguments.
482
"""
483
settings = {}
484
for client_name in config.sections():
485
section = dict(config.items(client_name))
486
client = settings[client_name] = {}
487
488
client["host"] = section["host"]
489
# Reformat values from string types to Python types
490
client["approved_by_default"] = config.getboolean(
491
client_name, "approved_by_default")
492
client["enabled"] = config.getboolean(client_name,
493
"enabled")
494
495
client["fingerprint"] = (section["fingerprint"].upper()
496
.replace(" ", ""))
497
if "secret" in section:
498
client["secret"] = section["secret"].decode("base64")
499
elif "secfile" in section:
500
with open(os.path.expanduser(os.path.expandvars
501
(section["secfile"])),
502
"rb") as secfile:
503
client["secret"] = secfile.read()
504
else:
505
raise TypeError("No secret or secfile for section {0}"
506
.format(section))
507
client["timeout"] = string_to_delta(section["timeout"])
508
client["extended_timeout"] = string_to_delta(
509
section["extended_timeout"])
510
client["interval"] = string_to_delta(section["interval"])
511
client["approval_delay"] = string_to_delta(
512
section["approval_delay"])
513
client["approval_duration"] = string_to_delta(
514
section["approval_duration"])
515
client["checker_command"] = section["checker"]
516
client["last_approval_request"] = None
517
client["last_checked_ok"] = None
518
client["last_checker_status"] = -2
519
520
return settings
521
522
def __init__(self, settings, name = None):
330
return _timedelta_to_milliseconds(self.approval_delay)
331
332
def __init__(self, name = None, disable_hook=None, config=None):
333
"""Note: the 'checker' key in 'config' sets the
334
'checker_command' attribute and *not* the 'checker'
335
attribute."""
523
336
self.name = name
524
# adding all client settings
525
for setting, value in settings.iteritems():
526
setattr(self, setting, value)
527
528
if self.enabled:
529
if not hasattr(self, "last_enabled"):
530
self.last_enabled = datetime.datetime.utcnow()
531
if not hasattr(self, "expires"):
532
self.expires = (datetime.datetime.utcnow()
533
+ self.timeout)
534
else:
535
self.last_enabled = None
536
self.expires = None
537
337
if config is None:
338
config = {}
538
339
logger.debug("Creating client %r", self.name)
539
340
# Uppercase and remove spaces from fingerprint for later
540
341
# comparison purposes with return value from the fingerprint()
541
342
# function
343
self.fingerprint = (config["fingerprint"].upper()
344
.replace(" ", ""))
542
345
logger.debug(" Fingerprint: %s", self.fingerprint)
543
self.created = settings.get("created",
544
datetime.datetime.utcnow())
545
546
# attributes specific for this server instance
346
if "secret" in config:
347
self.secret = config["secret"].decode("base64")
348
elif "secfile" in config:
349
with open(os.path.expanduser(os.path.expandvars
350
(config["secfile"])),
351
"rb") as secfile:
352
self.secret = secfile.read()
353
else:
354
raise TypeError("No secret or secfile for client %s"
355
% self.name)
356
self.host = config.get("host", "")
357
self.created = datetime.datetime.utcnow()
358
self.enabled = False
359
self.last_approval_request = None
360
self.last_enabled = None
361
self.last_checked_ok = None
362
self.timeout = string_to_delta(config["timeout"])
363
self.extended_timeout = string_to_delta(config["extended_timeout"])
364
self.interval = string_to_delta(config["interval"])
365
self.disable_hook = disable_hook
547
366
self.checker = None
548
367
self.checker_initiator_tag = None
549
368
self.disable_initiator_tag = None
369
self.expires = None
550
370
self.checker_callback_tag = None
371
self.checker_command = config["checker"]
551
372
self.current_checker_command = None
552
self.approved = None
373
self.last_connect = None
374
self._approved = None
375
self.approved_by_default = config.get("approved_by_default",
376
True)
553
377
self.approvals_pending = 0
554
self.changedstate = (multiprocessing_manager
555
.Condition(multiprocessing_manager
556
.Lock()))
557
self.client_structure = [attr for attr in
558
self.__dict__.iterkeys()
559
if not attr.startswith("_")]
560
self.client_structure.append("client_structure")
561
562
for name, t in inspect.getmembers(type(self),
563
lambda obj:
564
isinstance(obj,
565
property)):
566
if not name.startswith("_"):
567
self.client_structure.append(name)
378
self.approval_delay = string_to_delta(
379
config["approval_delay"])
380
self.approval_duration = string_to_delta(
381
config["approval_duration"])
382
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
568
383
569
# Send notice to process children that client state has changed
570
384
def send_changedstate(self):
571
with self.changedstate:
572
self.changedstate.notify_all()
573
385
self.changedstate.acquire()
386
self.changedstate.notify_all()
387
self.changedstate.release()
388
574
389
def enable(self):
575
390
"""Start this client's checker and timeout hooks"""
576
391
if getattr(self, "enabled", False):
577
392
# Already enabled
578
393
return
394
self.send_changedstate()
395
# Schedule a new checker to be started an 'interval' from now,
396
# and every interval from then on.
397
self.checker_initiator_tag = (gobject.timeout_add
398
(self.interval_milliseconds(),
399
self.start_checker))
400
# Schedule a disable() when 'timeout' has passed
579
401
self.expires = datetime.datetime.utcnow() + self.timeout
402
self.disable_initiator_tag = (gobject.timeout_add
403
(self.timeout_milliseconds(),
404
self.disable))
580
405
self.enabled = True
581
406
self.last_enabled = datetime.datetime.utcnow()
582
self.init_checker()
583
self.send_changedstate()
407
# Also start a new checker *right now*.
408
self.start_checker()
584
409
585
410
def disable(self, quiet=True):
586
411
"""Disable this client."""
587
412
if not getattr(self, "enabled", False):
588
413
return False
589
414
if not quiet:
415
self.send_changedstate()
416
if not quiet:
590
417
logger.info("Disabling client %s", self.name)
591
if getattr(self, "disable_initiator_tag", None) is not None:
418
if getattr(self, "disable_initiator_tag", False):
592
419
gobject.source_remove(self.disable_initiator_tag)
593
420
self.disable_initiator_tag = None
594
421
self.expires = None
595
if getattr(self, "checker_initiator_tag", None) is not None:
422
if getattr(self, "checker_initiator_tag", False):
596
423
gobject.source_remove(self.checker_initiator_tag)
597
424
self.checker_initiator_tag = None
598
425
self.stop_checker()
426
if self.disable_hook:
427
self.disable_hook(self)
599
428
self.enabled = False
600
if not quiet:
601
self.send_changedstate()
602
429
# Do not run this again if called by a gobject.timeout_add
603
430
return False
604
431
605
432
def __del__(self):
433
self.disable_hook = None
606
434
self.disable()
607
435
608
def init_checker(self):
609
# Schedule a new checker to be started an 'interval' from now,
610
# and every interval from then on.
611
if self.checker_initiator_tag is not None:
612
gobject.source_remove(self.checker_initiator_tag)
613
self.checker_initiator_tag = (gobject.timeout_add
614
(self.interval_milliseconds(),
615
self.start_checker))
616
# Schedule a disable() when 'timeout' has passed
617
if self.disable_initiator_tag is not None:
618
gobject.source_remove(self.disable_initiator_tag)
619
self.disable_initiator_tag = (gobject.timeout_add
620
(self.timeout_milliseconds(),
621
self.disable))
622
# Also start a new checker *right now*.
623
self.start_checker()
624
625
436
def checker_callback(self, pid, condition, command):
626
437
"""The checker has completed, so take appropriate actions."""
627
438
self.checker_callback_tag = None
628
439
self.checker = None
629
440
if os.WIFEXITED(condition):
630
self.last_checker_status = os.WEXITSTATUS(condition)
631
if self.last_checker_status == 0:
441
exitstatus = os.WEXITSTATUS(condition)
442
if exitstatus == 0:
632
443
logger.info("Checker for %(name)s succeeded",
633
444
vars(self))
634
445
self.checked_ok()
636
447
logger.info("Checker for %(name)s failed",
637
448
vars(self))
638
449
else:
639
self.last_checker_status = -1
640
450
logger.warning("Checker for %(name)s crashed?",
641
451
vars(self))
642
452
643
def checked_ok(self):
644
"""Assert that the client has been seen, alive and well."""
645
self.last_checked_ok = datetime.datetime.utcnow()
646
self.last_checker_status = 0
647
self.bump_timeout()
648
649
def bump_timeout(self, timeout=None):
650
"""Bump up the timeout for this client."""
453
def checked_ok(self, timeout=None):
454
"""Bump up the timeout for this client.
455
456
This should only be called when the client has been seen,
457
alive and well.
458
"""
651
459
if timeout is None:
652
460
timeout = self.timeout
653
if self.disable_initiator_tag is not None:
654
gobject.source_remove(self.disable_initiator_tag)
655
self.disable_initiator_tag = None
656
if getattr(self, "enabled", False):
657
self.disable_initiator_tag = (gobject.timeout_add
658
(timedelta_to_milliseconds
659
(timeout), self.disable))
660
self.expires = datetime.datetime.utcnow() + timeout
461
self.last_checked_ok = datetime.datetime.utcnow()
462
gobject.source_remove(self.disable_initiator_tag)
463
self.expires = datetime.datetime.utcnow() + timeout
464
self.disable_initiator_tag = (gobject.timeout_add
465
(_timedelta_to_milliseconds(timeout),
466
self.disable))
661
467
662
468
def need_approval(self):
663
469
self.last_approval_request = datetime.datetime.utcnow()
668
474
If a checker already exists, leave it running and do
669
475
nothing."""
670
476
# The reason for not killing a running checker is that if we
671
# did that, and if a checker (for some reason) started running
672
# slowly and taking more than 'interval' time, then the client
673
# would inevitably timeout, since no checker would get a
674
# chance to run to completion. If we instead leave running
477
# did that, then if a checker (for some reason) started
478
# running slowly and taking more than 'interval' time, the
479
# client would inevitably timeout, since no checker would get
480
# a chance to run to completion. If we instead leave running
675
481
# checkers alone, the checker would have to take more time
676
482
# than 'timeout' for the client to be disabled, which is as it
677
483
# should be.
691
497
self.current_checker_command)
692
498
# Start a new checker if needed
693
499
if self.checker is None:
694
# Escape attributes for the shell
695
escaped_attrs = dict(
696
(attr, re.escape(unicode(getattr(self, attr))))
697
for attr in
698
self.runtime_expansions)
699
500
try:
700
command = self.checker_command % escaped_attrs
701
except TypeError as error:
702
logger.error('Could not format string "%s"',
703
self.checker_command, exc_info=error)
704
return True # Try again later
501
# In case checker_command has exactly one % operator
502
command = self.checker_command % self.host
503
except TypeError:
504
# Escape attributes for the shell
505
escaped_attrs = dict(
506
(attr,
507
re.escape(unicode(str(getattr(self, attr, "")),
508
errors=
509
'replace')))
510
for attr in
511
self.runtime_expansions)
512
513
try:
514
command = self.checker_command % escaped_attrs
515
except TypeError as error:
516
logger.error('Could not format string "%s":'
517
' %s', self.checker_command, error)
518
return True # Try again later
705
519
self.current_checker_command = command
706
520
try:
707
521
logger.info("Starting checker %r for %s",
713
527
self.checker = subprocess.Popen(command,
714
528
close_fds=True,
715
529
shell=True, cwd="/")
530
self.checker_callback_tag = (gobject.child_watch_add
531
(self.checker.pid,
532
self.checker_callback,
533
data=command))
534
# The checker may have completed before the gobject
535
# watch was added. Check for this.
536
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
537
if pid:
538
gobject.source_remove(self.checker_callback_tag)
539
self.checker_callback(pid, status, command)
716
540
except OSError as error:
717
logger.error("Failed to start subprocess",
718
exc_info=error)
719
self.checker_callback_tag = (gobject.child_watch_add
720
(self.checker.pid,
721
self.checker_callback,
722
data=command))
723
# The checker may have completed before the gobject
724
# watch was added. Check for this.
725
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
726
if pid:
727
gobject.source_remove(self.checker_callback_tag)
728
self.checker_callback(pid, status, command)
541
logger.error("Failed to start subprocess: %s",
542
error)
729
543
# Re-run this periodically if run by gobject.timeout_add
730
544
return True
731
545
738
552
return
739
553
logger.debug("Stopping checker for %(name)s", vars(self))
740
554
try:
741
self.checker.terminate()
555
os.kill(self.checker.pid, signal.SIGTERM)
742
556
#time.sleep(0.5)
743
557
#if self.checker.poll() is None:
744
# self.checker.kill()
558
# os.kill(self.checker.pid, signal.SIGKILL)
745
559
except OSError as error:
746
560
if error.errno != errno.ESRCH: # No such process
747
561
raise
764
578
# "Set" method, so we fail early here:
765
579
if byte_arrays and signature != "ay":
766
580
raise ValueError("Byte arrays not supported for non-'ay'"
767
" signature {0!r}".format(signature))
581
" signature %r" % signature)
768
582
def decorator(func):
769
583
func._dbus_is_property = True
770
584
func._dbus_interface = dbus_interface
778
592
return decorator
779
593
780
594
781
def dbus_interface_annotations(dbus_interface):
782
"""Decorator for marking functions returning interface annotations
783
784
Usage:
785
786
@dbus_interface_annotations("org.example.Interface")
787
def _foo(self): # Function name does not matter
788
return {"org.freedesktop.DBus.Deprecated": "true",
789
"org.freedesktop.DBus.Property.EmitsChangedSignal":
790
"false"}
791
"""
792
def decorator(func):
793
func._dbus_is_interface = True
794
func._dbus_interface = dbus_interface
795
func._dbus_name = dbus_interface
796
return func
797
return decorator
798
799
800
def dbus_annotations(annotations):
801
"""Decorator to annotate D-Bus methods, signals or properties
802
Usage:
803
804
@dbus_service_property("org.example.Interface", signature="b",
805
access="r")
806
@dbus_annotations({{"org.freedesktop.DBus.Deprecated": "true",
807
"org.freedesktop.DBus.Property."
808
"EmitsChangedSignal": "false"})
809
def Property_dbus_property(self):
810
return dbus.Boolean(False)
811
"""
812
def decorator(func):
813
func._dbus_annotations = annotations
814
return func
815
return decorator
816
817
818
595
class DBusPropertyException(dbus.exceptions.DBusException):
819
596
"""A base class for D-Bus property-related exceptions
820
597
"""
843
620
"""
844
621
845
622
@staticmethod
846
def _is_dbus_thing(thing):
847
"""Returns a function testing if an attribute is a D-Bus thing
848
849
If called like _is_dbus_thing("method") it returns a function
850
suitable for use as predicate to inspect.getmembers().
851
"""
852
return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),
853
False)
623
def _is_dbus_property(obj):
624
return getattr(obj, "_dbus_is_property", False)
854
625
855
def _get_all_dbus_things(self, thing):
626
def _get_all_dbus_properties(self):
856
627
"""Returns a generator of (name, attribute) pairs
857
628
"""
858
return ((getattr(athing.__get__(self), "_dbus_name",
859
name),
860
athing.__get__(self))
861
for cls in self.__class__.__mro__
862
for name, athing in
863
inspect.getmembers(cls,
864
self._is_dbus_thing(thing)))
629
return ((prop._dbus_name, prop)
630
for name, prop in
631
inspect.getmembers(self, self._is_dbus_property))
865
632
866
633
def _get_dbus_property(self, interface_name, property_name):
867
634
"""Returns a bound method if one exists which is a D-Bus
868
635
property with the specified name and interface.
869
636
"""
870
for cls in self.__class__.__mro__:
871
for name, value in (inspect.getmembers
872
(cls,
873
self._is_dbus_thing("property"))):
874
if (value._dbus_name == property_name
875
and value._dbus_interface == interface_name):
876
return value.__get__(self)
877
637
for name in (property_name,
638
property_name + "_dbus_property"):
639
prop = getattr(self, name, None)
640
if (prop is None
641
or not self._is_dbus_property(prop)
642
or prop._dbus_name != property_name
643
or (interface_name and prop._dbus_interface
644
and interface_name != prop._dbus_interface)):
645
continue
646
return prop
878
647
# No such property
879
648
raise DBusPropertyNotFound(self.dbus_object_path + ":"
880
649
+ interface_name + "."
905
674
# signatures other than "ay".
906
675
if prop._dbus_signature != "ay":
907
676
raise ValueError
908
value = dbus.ByteArray(b''.join(chr(byte)
909
for byte in value))
677
value = dbus.ByteArray(''.join(unichr(byte)
678
for byte in value))
910
679
prop(value)
911
680
912
681
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
917
686
918
687
Note: Will not include properties with access="write".
919
688
"""
920
properties = {}
921
for name, prop in self._get_all_dbus_things("property"):
689
all = {}
690
for name, prop in self._get_all_dbus_properties():
922
691
if (interface_name
923
692
and interface_name != prop._dbus_interface):
924
693
# Interface non-empty but did not match
928
697
continue
929
698
value = prop()
930
699
if not hasattr(value, "variant_level"):
931
properties[name] = value
700
all[name] = value
932
701
continue
933
properties[name] = type(value)(value, variant_level=
934
value.variant_level+1)
935
return dbus.Dictionary(properties, signature="sv")
702
all[name] = type(value)(value, variant_level=
703
value.variant_level+1)
704
return dbus.Dictionary(all, signature="sv")
936
705
937
706
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
938
707
out_signature="s",
939
708
path_keyword='object_path',
940
709
connection_keyword='connection')
941
710
def Introspect(self, object_path, connection):
942
"""Overloading of standard D-Bus method.
943
944
Inserts property tags and interface annotation tags.
711
"""Standard D-Bus method, overloaded to insert property tags.
945
712
"""
946
713
xmlstring = dbus.service.Object.Introspect(self, object_path,
947
714
connection)
954
721
e.setAttribute("access", prop._dbus_access)
955
722
return e
956
723
for if_tag in document.getElementsByTagName("interface"):
957
# Add property tags
958
724
for tag in (make_tag(document, name, prop)
959
725
for name, prop
960
in self._get_all_dbus_things("property")
726
in self._get_all_dbus_properties()
961
727
if prop._dbus_interface
962
728
== if_tag.getAttribute("name")):
963
729
if_tag.appendChild(tag)
964
# Add annotation tags
965
for typ in ("method", "signal", "property"):
966
for tag in if_tag.getElementsByTagName(typ):
967
annots = dict()
968
for name, prop in (self.
969
_get_all_dbus_things(typ)):
970
if (name == tag.getAttribute("name")
971
and prop._dbus_interface
972
== if_tag.getAttribute("name")):
973
annots.update(getattr
974
(prop,
975
"_dbus_annotations",
976
{}))
977
for name, value in annots.iteritems():
978
ann_tag = document.createElement(
979
"annotation")
980
ann_tag.setAttribute("name", name)
981
ann_tag.setAttribute("value", value)
982
tag.appendChild(ann_tag)
983
# Add interface annotation tags
984
for annotation, value in dict(
985
itertools.chain.from_iterable(
986
annotations().iteritems()
987
for name, annotations in
988
self._get_all_dbus_things("interface")
989
if name == if_tag.getAttribute("name")
990
)).iteritems():
991
ann_tag = document.createElement("annotation")
992
ann_tag.setAttribute("name", annotation)
993
ann_tag.setAttribute("value", value)
994
if_tag.appendChild(ann_tag)
995
730
# Add the names to the return values for the
996
731
# "org.freedesktop.DBus.Properties" methods
997
732
if (if_tag.getAttribute("name")
1012
747
except (AttributeError, xml.dom.DOMException,
1013
748
xml.parsers.expat.ExpatError) as error:
1014
749
logger.error("Failed to override Introspection method",
1015
exc_info=error)
750
error)
1016
751
return xmlstring
1017
752
1018
753
1019
def datetime_to_dbus(dt, variant_level=0):
754
def datetime_to_dbus (dt, variant_level=0):
1020
755
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1021
756
if dt is None:
1022
757
return dbus.String("", variant_level = variant_level)
1024
759
variant_level=variant_level)
1025
760
1026
761
1027
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1028
"""A class decorator; applied to a subclass of
1029
dbus.service.Object, it will add alternate D-Bus attributes with
1030
interface names according to the "alt_interface_names" mapping.
1031
Usage:
1032
1033
@alternate_dbus_interfaces({"org.example.Interface":
1034
"net.example.AlternateInterface"})
1035
class SampleDBusObject(dbus.service.Object):
1036
@dbus.service.method("org.example.Interface")
1037
def SampleDBusMethod():
1038
pass
1039
1040
The above "SampleDBusMethod" on "SampleDBusObject" will be
1041
reachable via two interfaces: "org.example.Interface" and
1042
"net.example.AlternateInterface", the latter of which will have
1043
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1044
"true", unless "deprecate" is passed with a False value.
1045
1046
This works for methods and signals, and also for D-Bus properties
1047
(from DBusObjectWithProperties) and interfaces (from the
1048
dbus_interface_annotations decorator).
1049
"""
1050
def wrapper(cls):
1051
for orig_interface_name, alt_interface_name in (
1052
alt_interface_names.iteritems()):
1053
attr = {}
1054
interface_names = set()
1055
# Go though all attributes of the class
1056
for attrname, attribute in inspect.getmembers(cls):
1057
# Ignore non-D-Bus attributes, and D-Bus attributes
1058
# with the wrong interface name
1059
if (not hasattr(attribute, "_dbus_interface")
1060
or not attribute._dbus_interface
1061
.startswith(orig_interface_name)):
1062
continue
1063
# Create an alternate D-Bus interface name based on
1064
# the current name
1065
alt_interface = (attribute._dbus_interface
1066
.replace(orig_interface_name,
1067
alt_interface_name))
1068
interface_names.add(alt_interface)
1069
# Is this a D-Bus signal?
1070
if getattr(attribute, "_dbus_is_signal", False):
1071
# Extract the original non-method function by
1072
# black magic
1073
nonmethod_func = (dict(
1074
zip(attribute.func_code.co_freevars,
1075
attribute.__closure__))["func"]
1076
.cell_contents)
1077
# Create a new, but exactly alike, function
1078
# object, and decorate it to be a new D-Bus signal
1079
# with the alternate D-Bus interface name
1080
new_function = (dbus.service.signal
1081
(alt_interface,
1082
attribute._dbus_signature)
1083
(types.FunctionType(
1084
nonmethod_func.func_code,
1085
nonmethod_func.func_globals,
1086
nonmethod_func.func_name,
1087
nonmethod_func.func_defaults,
1088
nonmethod_func.func_closure)))
1089
# Copy annotations, if any
1090
try:
1091
new_function._dbus_annotations = (
1092
dict(attribute._dbus_annotations))
1093
except AttributeError:
1094
pass
1095
# Define a creator of a function to call both the
1096
# original and alternate functions, so both the
1097
# original and alternate signals gets sent when
1098
# the function is called
1099
def fixscope(func1, func2):
1100
"""This function is a scope container to pass
1101
func1 and func2 to the "call_both" function
1102
outside of its arguments"""
1103
def call_both(*args, **kwargs):
1104
"""This function will emit two D-Bus
1105
signals by calling func1 and func2"""
1106
func1(*args, **kwargs)
1107
func2(*args, **kwargs)
1108
return call_both
1109
# Create the "call_both" function and add it to
1110
# the class
1111
attr[attrname] = fixscope(attribute, new_function)
1112
# Is this a D-Bus method?
1113
elif getattr(attribute, "_dbus_is_method", False):
1114
# Create a new, but exactly alike, function
1115
# object. Decorate it to be a new D-Bus method
1116
# with the alternate D-Bus interface name. Add it
1117
# to the class.
1118
attr[attrname] = (dbus.service.method
1119
(alt_interface,
1120
attribute._dbus_in_signature,
1121
attribute._dbus_out_signature)
1122
(types.FunctionType
1123
(attribute.func_code,
1124
attribute.func_globals,
1125
attribute.func_name,
1126
attribute.func_defaults,
1127
attribute.func_closure)))
1128
# Copy annotations, if any
1129
try:
1130
attr[attrname]._dbus_annotations = (
1131
dict(attribute._dbus_annotations))
1132
except AttributeError:
1133
pass
1134
# Is this a D-Bus property?
1135
elif getattr(attribute, "_dbus_is_property", False):
1136
# Create a new, but exactly alike, function
1137
# object, and decorate it to be a new D-Bus
1138
# property with the alternate D-Bus interface
1139
# name. Add it to the class.
1140
attr[attrname] = (dbus_service_property
1141
(alt_interface,
1142
attribute._dbus_signature,
1143
attribute._dbus_access,
1144
attribute
1145
._dbus_get_args_options
1146
["byte_arrays"])
1147
(types.FunctionType
1148
(attribute.func_code,
1149
attribute.func_globals,
1150
attribute.func_name,
1151
attribute.func_defaults,
1152
attribute.func_closure)))
1153
# Copy annotations, if any
1154
try:
1155
attr[attrname]._dbus_annotations = (
1156
dict(attribute._dbus_annotations))
1157
except AttributeError:
1158
pass
1159
# Is this a D-Bus interface?
1160
elif getattr(attribute, "_dbus_is_interface", False):
1161
# Create a new, but exactly alike, function
1162
# object. Decorate it to be a new D-Bus interface
1163
# with the alternate D-Bus interface name. Add it
1164
# to the class.
1165
attr[attrname] = (dbus_interface_annotations
1166
(alt_interface)
1167
(types.FunctionType
1168
(attribute.func_code,
1169
attribute.func_globals,
1170
attribute.func_name,
1171
attribute.func_defaults,
1172
attribute.func_closure)))
1173
if deprecate:
1174
# Deprecate all alternate interfaces
1175
iname="_AlternateDBusNames_interface_annotation{0}"
1176
for interface_name in interface_names:
1177
@dbus_interface_annotations(interface_name)
1178
def func(self):
1179
return { "org.freedesktop.DBus.Deprecated":
1180
"true" }
1181
# Find an unused name
1182
for aname in (iname.format(i)
1183
for i in itertools.count()):
1184
if aname not in attr:
1185
attr[aname] = func
1186
break
1187
if interface_names:
1188
# Replace the class with a new subclass of it with
1189
# methods, signals, etc. as created above.
1190
cls = type(b"{0}Alternate".format(cls.__name__),
1191
(cls,), attr)
1192
return cls
1193
return wrapper
1194
1195
1196
@alternate_dbus_interfaces({"se.recompile.Mandos":
1197
"se.bsnet.fukt.Mandos"})
1198
762
class ClientDBus(Client, DBusObjectWithProperties):
1199
763
"""A Client class using D-Bus
1200
764
1209
773
# dbus.service.Object doesn't use super(), so we can't either.
1210
774
1211
775
def __init__(self, bus = None, *args, **kwargs):
776
self._approvals_pending = 0
1212
777
self.bus = bus
1213
778
Client.__init__(self, *args, **kwargs)
1214
779
# Only now, when this client is initialized, can it show up on
1220
785
("/clients/" + client_object_name))
1221
786
DBusObjectWithProperties.__init__(self, self.bus,
1222
787
self.dbus_object_path)
1223
788
1224
789
def notifychangeproperty(transform_func,
1225
790
dbus_name, type_func=lambda x: x,
1226
791
variant_level=1):
1227
""" Modify a variable so that it's a property which announces
1228
its changes to DBus.
1229
1230
transform_fun: Function that takes a value and a variant_level
1231
and transforms it to a D-Bus type.
1232
dbus_name: D-Bus name of the variable
792
""" Modify a variable so that its a property that announce its
793
changes to DBus.
794
transform_fun: Function that takes a value and transform it to
795
DBus type.
796
dbus_name: DBus name of the variable
1233
797
type_func: Function that transform the value before sending it
1234
to the D-Bus. Default: no transform
1235
variant_level: D-Bus variant level. Default: 1
798
to DBus
799
variant_level: DBus variant level. default: 1
1236
800
"""
1237
attrname = "_{0}".format(dbus_name)
801
real_value = [None,]
1238
802
def setter(self, value):
803
old_value = real_value[0]
804
real_value[0] = value
1239
805
if hasattr(self, "dbus_object_path"):
1240
if (not hasattr(self, attrname) or
1241
type_func(getattr(self, attrname, None))
1242
!= type_func(value)):
1243
dbus_value = transform_func(type_func(value),
1244
variant_level
1245
=variant_level)
806
if type_func(old_value) != type_func(real_value[0]):
807
dbus_value = transform_func(type_func(real_value[0]),
808
variant_level)
1246
809
self.PropertyChanged(dbus.String(dbus_name),
1247
810
dbus_value)
1248
setattr(self, attrname, value)
1249
811
1250
return property(lambda self: getattr(self, attrname), setter)
812
return property(lambda self: real_value[0], setter)
813
1251
814
1252
815
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1253
816
approvals_pending = notifychangeproperty(dbus.Boolean,
1257
820
last_enabled = notifychangeproperty(datetime_to_dbus,
1258
821
"LastEnabled")
1259
822
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1260
type_func = lambda checker:
1261
checker is not None)
823
type_func = lambda checker: checker is not None)
1262
824
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1263
825
"LastCheckedOK")
1264
last_checker_status = notifychangeproperty(dbus.Int16,
1265
"LastCheckerStatus")
1266
last_approval_request = notifychangeproperty(
1267
datetime_to_dbus, "LastApprovalRequest")
826
last_approval_request = notifychangeproperty(datetime_to_dbus,
827
"LastApprovalRequest")
1268
828
approved_by_default = notifychangeproperty(dbus.Boolean,
1269
829
"ApprovedByDefault")
1270
approval_delay = notifychangeproperty(dbus.UInt64,
1271
"ApprovalDelay",
1272
type_func =
1273
timedelta_to_milliseconds)
1274
approval_duration = notifychangeproperty(
1275
dbus.UInt64, "ApprovalDuration",
1276
type_func = timedelta_to_milliseconds)
830
approval_delay = notifychangeproperty(dbus.UInt16, "ApprovalDelay",
831
type_func = _timedelta_to_milliseconds)
832
approval_duration = notifychangeproperty(dbus.UInt16, "ApprovalDuration",
833
type_func = _timedelta_to_milliseconds)
1277
834
host = notifychangeproperty(dbus.String, "Host")
1278
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1279
type_func =
1280
timedelta_to_milliseconds)
1281
extended_timeout = notifychangeproperty(
1282
dbus.UInt64, "ExtendedTimeout",
1283
type_func = timedelta_to_milliseconds)
1284
interval = notifychangeproperty(dbus.UInt64,
1285
"Interval",
1286
type_func =
1287
timedelta_to_milliseconds)
835
timeout = notifychangeproperty(dbus.UInt16, "Timeout",
836
type_func = _timedelta_to_milliseconds)
837
extended_timeout = notifychangeproperty(dbus.UInt16, "ExtendedTimeout",
838
type_func = _timedelta_to_milliseconds)
839
interval = notifychangeproperty(dbus.UInt16, "Interval",
840
type_func = _timedelta_to_milliseconds)
1288
841
checker_command = notifychangeproperty(dbus.String, "Checker")
1289
842
1290
843
del notifychangeproperty
1332
885
return r
1333
886
1334
887
def _reset_approved(self):
1335
self.approved = None
888
self._approved = None
1336
889
return False
1337
890
1338
891
def approve(self, value=True):
1339
self.approved = value
1340
gobject.timeout_add(timedelta_to_milliseconds
892
self.send_changedstate()
893
self._approved = value
894
gobject.timeout_add(_timedelta_to_milliseconds
1341
895
(self.approval_duration),
1342
896
self._reset_approved)
1343
self.send_changedstate()
897
1344
898
1345
899
## D-Bus methods, signals & properties
1346
_interface = "se.recompile.Mandos.Client"
1347
1348
## Interfaces
1349
1350
@dbus_interface_annotations(_interface)
1351
def _foo(self):
1352
return { "org.freedesktop.DBus.Property.EmitsChangedSignal":
1353
"false"}
900
_interface = "se.bsnet.fukt.Mandos.Client"
1354
901
1355
902
## Signals
1356
903
1456
1003
access="readwrite")
1457
1004
def ApprovalDuration_dbus_property(self, value=None):
1458
1005
if value is None: # get
1459
return dbus.UInt64(timedelta_to_milliseconds(
1006
return dbus.UInt64(_timedelta_to_milliseconds(
1460
1007
self.approval_duration))
1461
1008
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1462
1009
1476
1023
def Host_dbus_property(self, value=None):
1477
1024
if value is None: # get
1478
1025
return dbus.String(self.host)
1479
self.host = unicode(value)
1026
self.host = value
1480
1027
1481
1028
# Created - property
1482
1029
@dbus_service_property(_interface, signature="s", access="read")
1483
1030
def Created_dbus_property(self):
1484
return datetime_to_dbus(self.created)
1031
return dbus.String(datetime_to_dbus(self.created))
1485
1032
1486
1033
# LastEnabled - property
1487
1034
@dbus_service_property(_interface, signature="s", access="read")
1508
1055
return
1509
1056
return datetime_to_dbus(self.last_checked_ok)
1510
1057
1511
# LastCheckerStatus - property
1512
@dbus_service_property(_interface, signature="n",
1513
access="read")
1514
def LastCheckerStatus_dbus_property(self):
1515
return dbus.Int16(self.last_checker_status)
1516
1517
1058
# Expires - property
1518
1059
@dbus_service_property(_interface, signature="s", access="read")
1519
1060
def Expires_dbus_property(self):
1530
1071
def Timeout_dbus_property(self, value=None):
1531
1072
if value is None: # get
1532
1073
return dbus.UInt64(self.timeout_milliseconds())
1533
old_timeout = self.timeout
1534
1074
self.timeout = datetime.timedelta(0, 0, 0, value)
1535
# Reschedule disabling
1536
if self.enabled:
1537
now = datetime.datetime.utcnow()
1538
self.expires += self.timeout - old_timeout
1539
if self.expires <= now:
1540
# The timeout has passed
1541
self.disable()
1542
else:
1543
if (getattr(self, "disable_initiator_tag", None)
1544
is None):
1545
return
1546
gobject.source_remove(self.disable_initiator_tag)
1547
self.disable_initiator_tag = (
1548
gobject.timeout_add(
1549
timedelta_to_milliseconds(self.expires - now),
1550
self.disable))
1075
if getattr(self, "disable_initiator_tag", None) is None:
1076
return
1077
# Reschedule timeout
1078
gobject.source_remove(self.disable_initiator_tag)
1079
self.disable_initiator_tag = None
1080
self.expires = None
1081
time_to_die = (self.
1082
_timedelta_to_milliseconds((self
1083
.last_checked_ok
1084
+ self.timeout)
1085
- datetime.datetime
1086
.utcnow()))
1087
if time_to_die <= 0:
1088
# The timeout has passed
1089
self.disable()
1090
else:
1091
self.expires = (datetime.datetime.utcnow()
1092
+ datetime.timedelta(milliseconds = time_to_die))
1093
self.disable_initiator_tag = (gobject.timeout_add
1094
(time_to_die, self.disable))
1551
1095
1552
1096
# ExtendedTimeout - property
1553
1097
@dbus_service_property(_interface, signature="t",
1566
1110
self.interval = datetime.timedelta(0, 0, 0, value)
1567
1111
if getattr(self, "checker_initiator_tag", None) is None:
1568
1112
return
1569
if self.enabled:
1570
# Reschedule checker run
1571
gobject.source_remove(self.checker_initiator_tag)
1572
self.checker_initiator_tag = (gobject.timeout_add
1573
(value, self.start_checker))
1574
self.start_checker() # Start one now, too
1113
# Reschedule checker run
1114
gobject.source_remove(self.checker_initiator_tag)
1115
self.checker_initiator_tag = (gobject.timeout_add
1116
(value, self.start_checker))
1117
self.start_checker() # Start one now, too
1575
1118
1576
1119
# Checker - property
1577
1120
@dbus_service_property(_interface, signature="s",
1579
1122
def Checker_dbus_property(self, value=None):
1580
1123
if value is None: # get
1581
1124
return dbus.String(self.checker_command)
1582
self.checker_command = unicode(value)
1125
self.checker_command = value
1583
1126
1584
1127
# CheckerRunning - property
1585
1128
@dbus_service_property(_interface, signature="b",
1614
1157
raise KeyError()
1615
1158
1616
1159
def __getattribute__(self, name):
1617
if name == '_pipe':
1160
if(name == '_pipe'):
1618
1161
return super(ProxyClient, self).__getattribute__(name)
1619
1162
self._pipe.send(('getattr', name))
1620
1163
data = self._pipe.recv()
1627
1170
return func
1628
1171
1629
1172
def __setattr__(self, name, value):
1630
if name == '_pipe':
1173
if(name == '_pipe'):
1631
1174
return super(ProxyClient, self).__setattr__(name, value)
1632
1175
self._pipe.send(('setattr', name, value))
1633
1176
1716
1259
client.name)
1717
1260
if self.server.use_dbus:
1718
1261
# Emit D-Bus signal
1719
client.Rejected("Disabled")
1262
client.Rejected("Disabled")
1720
1263
return
1721
1264
1722
if client.approved or not client.approval_delay:
1265
if client._approved or not client.approval_delay:
1723
1266
#We are approved or approval is disabled
1724
1267
break
1725
elif client.approved is None:
1268
elif client._approved is None:
1726
1269
logger.info("Client %s needs approval",
1727
1270
client.name)
1728
1271
if self.server.use_dbus:
1739
1282
return
1740
1283
1741
1284
#wait until timeout or approved
1285
#x = float(client._timedelta_to_milliseconds(delay))
1742
1286
time = datetime.datetime.now()
1743
1287
client.changedstate.acquire()
1744
client.changedstate.wait(
1745
float(timedelta_to_milliseconds(delay)
1746
/ 1000))
1288
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
1747
1289
client.changedstate.release()
1748
1290
time2 = datetime.datetime.now()
1749
1291
if (time2 - time) >= delay:
1765
1307
try:
1766
1308
sent = session.send(client.secret[sent_size:])
1767
1309
except gnutls.errors.GNUTLSError as error:
1768
logger.warning("gnutls send failed",
1769
exc_info=error)
1310
logger.warning("gnutls send failed")
1770
1311
return
1771
1312
logger.debug("Sent: %d, remaining: %d",
1772
1313
sent, len(client.secret)
1774
1315
sent_size += sent
1775
1316
1776
1317
logger.info("Sending secret to %s", client.name)
1777
# bump the timeout using extended_timeout
1778
client.bump_timeout(client.extended_timeout)
1318
# bump the timeout as if seen
1319
client.checked_ok(client.extended_timeout)
1779
1320
if self.server.use_dbus:
1780
1321
# Emit D-Bus signal
1781
1322
client.GotSecret()
1786
1327
try:
1787
1328
session.bye()
1788
1329
except gnutls.errors.GNUTLSError as error:
1789
logger.warning("GnuTLS bye failed",
1790
exc_info=error)
1330
logger.warning("GnuTLS bye failed")
1791
1331
1792
1332
@staticmethod
1793
1333
def peer_certificate(session):
1849
1389
# Convert the buffer to a Python bytestring
1850
1390
fpr = ctypes.string_at(buf, buf_len.value)
1851
1391
# Convert the bytestring to hexadecimal notation
1852
hex_fpr = binascii.hexlify(fpr).upper()
1392
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
1853
1393
return hex_fpr
1854
1394
1855
1395
1858
1398
def sub_process_main(self, request, address):
1859
1399
try:
1860
1400
self.finish_request(request, address)
1861
except Exception:
1401
except:
1862
1402
self.handle_error(request, address)
1863
1403
self.close_request(request)
1864
1404
1865
1405
def process_request(self, request, address):
1866
1406
"""Start a new process to process the request."""
1867
proc = multiprocessing.Process(target = self.sub_process_main,
1868
args = (request, address))
1869
proc.start()
1870
return proc
1407
multiprocessing.Process(target = self.sub_process_main,
1408
args = (request, address)).start()
1871
1409
1872
1410
1873
1411
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1879
1417
"""
1880
1418
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1881
1419
1882
proc = MultiprocessingMixIn.process_request(self, request,
1883
client_address)
1420
super(MultiprocessingMixInWithPipe,
1421
self).process_request(request, client_address)
1884
1422
self.child_pipe.close()
1885
self.add_pipe(parent_pipe, proc)
1423
self.add_pipe(parent_pipe)
1886
1424
1887
def add_pipe(self, parent_pipe, proc):
1425
def add_pipe(self, parent_pipe):
1888
1426
"""Dummy function; override as necessary"""
1889
1427
raise NotImplementedError
1890
1428
1899
1437
use_ipv6: Boolean; to use IPv6 or not
1900
1438
"""
1901
1439
def __init__(self, server_address, RequestHandlerClass,
1902
interface=None, use_ipv6=True, socketfd=None):
1903
"""If socketfd is set, use that file descriptor instead of
1904
creating a new one with socket.socket().
1905
"""
1440
interface=None, use_ipv6=True):
1906
1441
self.interface = interface
1907
1442
if use_ipv6:
1908
1443
self.address_family = socket.AF_INET6
1909
if socketfd is not None:
1910
# Save the file descriptor
1911
self.socketfd = socketfd
1912
# Save the original socket.socket() function
1913
self.socket_socket = socket.socket
1914
# To implement --socket, we monkey patch socket.socket.
1915
#
1916
# (When socketserver.TCPServer is a new-style class, we
1917
# could make self.socket into a property instead of monkey
1918
# patching socket.socket.)
1919
#
1920
# Create a one-time-only replacement for socket.socket()
1921
@functools.wraps(socket.socket)
1922
def socket_wrapper(*args, **kwargs):
1923
# Restore original function so subsequent calls are
1924
# not affected.
1925
socket.socket = self.socket_socket
1926
del self.socket_socket
1927
# This time only, return a new socket object from the
1928
# saved file descriptor.
1929
return socket.fromfd(self.socketfd, *args, **kwargs)
1930
# Replace socket.socket() function with wrapper
1931
socket.socket = socket_wrapper
1932
# The socketserver.TCPServer.__init__ will call
1933
# socket.socket(), which might be our replacement,
1934
# socket_wrapper(), if socketfd was set.
1935
1444
socketserver.TCPServer.__init__(self, server_address,
1936
1445
RequestHandlerClass)
1937
1938
1446
def server_bind(self):
1939
1447
"""This overrides the normal server_bind() function
1940
1448
to bind to an interface if one was specified, and also NOT to
1948
1456
try:
1949
1457
self.socket.setsockopt(socket.SOL_SOCKET,
1950
1458
SO_BINDTODEVICE,
1951
str(self.interface + '\0'))
1459
str(self.interface
1460
+ '\0'))
1952
1461
except socket.error as error:
1953
if error.errno == errno.EPERM:
1954
logger.error("No permission to bind to"
1955
" interface %s", self.interface)
1956
elif error.errno == errno.ENOPROTOOPT:
1462
if error[0] == errno.EPERM:
1463
logger.error("No permission to"
1464
" bind to interface %s",
1465
self.interface)
1466
elif error[0] == errno.ENOPROTOOPT:
1957
1467
logger.error("SO_BINDTODEVICE not available;"
1958
1468
" cannot bind to interface %s",
1959
1469
self.interface)
1960
elif error.errno == errno.ENODEV:
1961
logger.error("Interface %s does not exist,"
1962
" cannot bind", self.interface)
1963
1470
else:
1964
1471
raise
1965
1472
# Only bind(2) the socket if we really need to.
1995
1502
"""
1996
1503
def __init__(self, server_address, RequestHandlerClass,
1997
1504
interface=None, use_ipv6=True, clients=None,
1998
gnutls_priority=None, use_dbus=True, socketfd=None):
1505
gnutls_priority=None, use_dbus=True):
1999
1506
self.enabled = False
2000
1507
self.clients = clients
2001
1508
if self.clients is None:
2002
self.clients = {}
1509
self.clients = set()
2003
1510
self.use_dbus = use_dbus
2004
1511
self.gnutls_priority = gnutls_priority
2005
1512
IPv6_TCPServer.__init__(self, server_address,
2006
1513
RequestHandlerClass,
2007
1514
interface = interface,
2008
use_ipv6 = use_ipv6,
2009
socketfd = socketfd)
1515
use_ipv6 = use_ipv6)
2010
1516
def server_activate(self):
2011
1517
if self.enabled:
2012
1518
return socketserver.TCPServer.server_activate(self)
2013
2014
1519
def enable(self):
2015
1520
self.enabled = True
2016
2017
def add_pipe(self, parent_pipe, proc):
1521
def add_pipe(self, parent_pipe):
2018
1522
# Call "handle_ipc" for both data and EOF events
2019
1523
gobject.io_add_watch(parent_pipe.fileno(),
2020
1524
gobject.IO_IN | gobject.IO_HUP,
2021
1525
functools.partial(self.handle_ipc,
2022
parent_pipe =
2023
parent_pipe,
2024
proc = proc))
2025
1526
parent_pipe = parent_pipe))
1527
2026
1528
def handle_ipc(self, source, condition, parent_pipe=None,
2027
proc = None, client_object=None):
2028
# error, or the other end of multiprocessing.Pipe has closed
2029
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2030
# Wait for other process to exit
2031
proc.join()
1529
client_object=None):
1530
condition_names = {
1531
gobject.IO_IN: "IN", # There is data to read.
1532
gobject.IO_OUT: "OUT", # Data can be written (without
1533
# blocking).
1534
gobject.IO_PRI: "PRI", # There is urgent data to read.
1535
gobject.IO_ERR: "ERR", # Error condition.
1536
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1537
# broken, usually for pipes and
1538
# sockets).
1539
}
1540
conditions_string = ' | '.join(name
1541
for cond, name in
1542
condition_names.iteritems()
1543
if cond & condition)
1544
# error or the other end of multiprocessing.Pipe has closed
1545
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2032
1546
return False
2033
1547
2034
1548
# Read a request from the child
2039
1553
fpr = request[1]
2040
1554
address = request[2]
2041
1555
2042
for c in self.clients.itervalues():
1556
for c in self.clients:
2043
1557
if c.fingerprint == fpr:
2044
1558
client = c
2045
1559
break
2048
1562
"dress: %s", fpr, address)
2049
1563
if self.use_dbus:
2050
1564
# Emit D-Bus signal
2051
mandos_dbus_service.ClientNotFound(fpr,
2052
address[0])
1565
mandos_dbus_service.ClientNotFound(fpr, address[0])
2053
1566
parent_pipe.send(False)
2054
1567
return False
2055
1568
2056
1569
gobject.io_add_watch(parent_pipe.fileno(),
2057
1570
gobject.IO_IN | gobject.IO_HUP,
2058
1571
functools.partial(self.handle_ipc,
2059
parent_pipe =
2060
parent_pipe,
2061
proc = proc,
2062
client_object =
2063
client))
1572
parent_pipe = parent_pipe,
1573
client_object = client))
2064
1574
parent_pipe.send(True)
2065
# remove the old hook in favor of the new above hook on
2066
# same fileno
1575
# remove the old hook in favor of the new above hook on same fileno
2067
1576
return False
2068
1577
if command == 'funcall':
2069
1578
funcname = request[1]
2070
1579
args = request[2]
2071
1580
kwargs = request[3]
2072
1581
2073
parent_pipe.send(('data', getattr(client_object,
2074
funcname)(*args,
2075
**kwargs)))
1582
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
2076
1583
2077
1584
if command == 'getattr':
2078
1585
attrname = request[1]
2079
1586
if callable(client_object.__getattribute__(attrname)):
2080
1587
parent_pipe.send(('function',))
2081
1588
else:
2082
parent_pipe.send(('data', client_object
2083
.__getattribute__(attrname)))
1589
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
2084
1590
2085
1591
if command == 'setattr':
2086
1592
attrname = request[1]
2122
1628
elif suffix == "w":
2123
1629
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2124
1630
else:
2125
raise ValueError("Unknown suffix {0!r}"
2126
.format(suffix))
1631
raise ValueError("Unknown suffix %r" % suffix)
2127
1632
except (ValueError, IndexError) as e:
2128
1633
raise ValueError(*(e.args))
2129
1634
timevalue += delta
2130
1635
return timevalue
2131
1636
2132
1637
1638
def if_nametoindex(interface):
1639
"""Call the C function if_nametoindex(), or equivalent
1640
1641
Note: This function cannot accept a unicode string."""
1642
global if_nametoindex
1643
try:
1644
if_nametoindex = (ctypes.cdll.LoadLibrary
1645
(ctypes.util.find_library("c"))
1646
.if_nametoindex)
1647
except (OSError, AttributeError):
1648
logger.warning("Doing if_nametoindex the hard way")
1649
def if_nametoindex(interface):
1650
"Get an interface index the hard way, i.e. using fcntl()"
1651
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1652
with contextlib.closing(socket.socket()) as s:
1653
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1654
struct.pack(str("16s16x"),
1655
interface))
1656
interface_index = struct.unpack(str("I"),
1657
ifreq[16:20])[0]
1658
return interface_index
1659
return if_nametoindex(interface)
1660
1661
2133
1662
def daemon(nochdir = False, noclose = False):
2134
1663
"""See daemon(3). Standard BSD Unix function.
2135
1664
2143
1672
sys.exit()
2144
1673
if not noclose:
2145
1674
# Close all standard open file descriptors
2146
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1675
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2147
1676
if not stat.S_ISCHR(os.fstat(null).st_mode):
2148
1677
raise OSError(errno.ENODEV,
2149
"{0} not a character device"
2150
.format(os.devnull))
1678
"%s not a character device"
1679
% os.path.devnull)
2151
1680
os.dup2(null, sys.stdin.fileno())
2152
1681
os.dup2(null, sys.stdout.fileno())
2153
1682
os.dup2(null, sys.stderr.fileno())
2162
1691
2163
1692
parser = argparse.ArgumentParser()
2164
1693
parser.add_argument("-v", "--version", action="version",
2165
version = "%(prog)s {0}".format(version),
1694
version = "%%(prog)s %s" % version,
2166
1695
help="show version number and exit")
2167
1696
parser.add_argument("-i", "--interface", metavar="IF",
2168
1697
help="Bind to interface IF")
2190
1719
" system bus interface")
2191
1720
parser.add_argument("--no-ipv6", action="store_false",
2192
1721
dest="use_ipv6", help="Do not use IPv6")
2193
parser.add_argument("--no-restore", action="store_false",
2194
dest="restore", help="Do not restore stored"
2195
" state")
2196
parser.add_argument("--socket", type=int,
2197
help="Specify a file descriptor to a network"
2198
" socket to use instead of creating one")
2199
parser.add_argument("--statedir", metavar="DIR",
2200
help="Directory to save/restore state in")
2201
parser.add_argument("--foreground", action="store_true",
2202
help="Run in foreground")
2203
2204
1722
options = parser.parse_args()
2205
1723
2206
1724
if options.check:
2219
1737
"use_dbus": "True",
2220
1738
"use_ipv6": "True",
2221
1739
"debuglevel": "",
2222
"restore": "True",
2223
"socket": "",
2224
"statedir": "/var/lib/mandos",
2225
"foreground": "False",
2226
1740
}
2227
1741
2228
1742
# Parse config file for server-global settings
2233
1747
# Convert the SafeConfigParser object to a dict
2234
1748
server_settings = server_config.defaults()
2235
1749
# Use the appropriate methods on the non-string config options
2236
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
1750
for option in ("debug", "use_dbus", "use_ipv6"):
2237
1751
server_settings[option] = server_config.getboolean("DEFAULT",
2238
1752
option)
2239
1753
if server_settings["port"]:
2240
1754
server_settings["port"] = server_config.getint("DEFAULT",
2241
1755
"port")
2242
if server_settings["socket"]:
2243
server_settings["socket"] = server_config.getint("DEFAULT",
2244
"socket")
2245
# Later, stdin will, and stdout and stderr might, be dup'ed
2246
# over with an opened os.devnull. But we don't want this to
2247
# happen with a supplied network socket.
2248
if 0 <= server_settings["socket"] <= 2:
2249
server_settings["socket"] = os.dup(server_settings
2250
["socket"])
2251
1756
del server_config
2252
1757
2253
1758
# Override the settings from the config file with command line
2254
1759
# options, if set.
2255
1760
for option in ("interface", "address", "port", "debug",
2256
1761
"priority", "servicename", "configdir",
2257
"use_dbus", "use_ipv6", "debuglevel", "restore",
2258
"statedir", "socket", "foreground"):
1762
"use_dbus", "use_ipv6", "debuglevel"):
2259
1763
value = getattr(options, option)
2260
1764
if value is not None:
2261
1765
server_settings[option] = value
2264
1768
for option in server_settings.keys():
2265
1769
if type(server_settings[option]) is str:
2266
1770
server_settings[option] = unicode(server_settings[option])
2267
# Debug implies foreground
2268
if server_settings["debug"]:
2269
server_settings["foreground"] = True
2270
1771
# Now we have our good server settings in "server_settings"
2271
1772
2272
1773
##################################################################
2276
1777
debuglevel = server_settings["debuglevel"]
2277
1778
use_dbus = server_settings["use_dbus"]
2278
1779
use_ipv6 = server_settings["use_ipv6"]
2279
stored_state_path = os.path.join(server_settings["statedir"],
2280
stored_state_file)
2281
foreground = server_settings["foreground"]
2282
2283
if debug:
2284
initlogger(debug, logging.DEBUG)
2285
else:
2286
if not debuglevel:
2287
initlogger(debug)
2288
else:
2289
level = getattr(logging, debuglevel.upper())
2290
initlogger(debug, level)
2291
1780
2292
1781
if server_settings["servicename"] != "Mandos":
2293
1782
syslogger.setFormatter(logging.Formatter
2294
('Mandos ({0}) [%(process)d]:'
2295
' %(levelname)s: %(message)s'
2296
.format(server_settings
2297
["servicename"])))
1783
('Mandos (%s) [%%(process)d]:'
1784
' %%(levelname)s: %%(message)s'
1785
% server_settings["servicename"]))
2298
1786
2299
1787
# Parse config file with clients
2300
client_config = configparser.SafeConfigParser(Client
2301
.client_defaults)
1788
client_defaults = { "timeout": "5m",
1789
"extended_timeout": "15m",
1790
"interval": "2m",
1791
"checker": "fping -q -- %%(host)s",
1792
"host": "",
1793
"approval_delay": "0s",
1794
"approval_duration": "1s",
1795
}
1796
client_config = configparser.SafeConfigParser(client_defaults)
2302
1797
client_config.read(os.path.join(server_settings["configdir"],
2303
1798
"clients.conf"))
2304
1799
2313
1808
use_ipv6=use_ipv6,
2314
1809
gnutls_priority=
2315
1810
server_settings["priority"],
2316
use_dbus=use_dbus,
2317
socketfd=(server_settings["socket"]
2318
or None))
2319
if not foreground:
1811
use_dbus=use_dbus)
1812
if not debug:
2320
1813
pidfilename = "/var/run/mandos.pid"
2321
pidfile = None
2322
1814
try:
2323
1815
pidfile = open(pidfilename, "w")
2324
except IOError as e:
2325
logger.error("Could not open file %r", pidfilename,
2326
exc_info=e)
1816
except IOError:
1817
logger.error("Could not open file %r", pidfilename)
2327
1818
2328
for name in ("_mandos", "mandos", "nobody"):
1819
try:
1820
uid = pwd.getpwnam("_mandos").pw_uid
1821
gid = pwd.getpwnam("_mandos").pw_gid
1822
except KeyError:
2329
1823
try:
2330
uid = pwd.getpwnam(name).pw_uid
2331
gid = pwd.getpwnam(name).pw_gid
2332
break
1824
uid = pwd.getpwnam("mandos").pw_uid
1825
gid = pwd.getpwnam("mandos").pw_gid
2333
1826
except KeyError:
2334
continue
2335
else:
2336
uid = 65534
2337
gid = 65534
1827
try:
1828
uid = pwd.getpwnam("nobody").pw_uid
1829
gid = pwd.getpwnam("nobody").pw_gid
1830
except KeyError:
1831
uid = 65534
1832
gid = 65534
2338
1833
try:
2339
1834
os.setgid(gid)
2340
1835
os.setuid(uid)
2341
1836
except OSError as error:
2342
if error.errno != errno.EPERM:
1837
if error[0] != errno.EPERM:
2343
1838
raise error
2344
1839
1840
if not debug and not debuglevel:
1841
syslogger.setLevel(logging.WARNING)
1842
console.setLevel(logging.WARNING)
1843
if debuglevel:
1844
level = getattr(logging, debuglevel.upper())
1845
syslogger.setLevel(level)
1846
console.setLevel(level)
1847
2345
1848
if debug:
2346
1849
# Enable all possible GnuTLS debugging
2347
1850
2357
1860
.gnutls_global_set_log_function(debug_gnutls))
2358
1861
2359
1862
# Redirect stdin so all checkers get /dev/null
2360
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1863
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2361
1864
os.dup2(null, sys.stdin.fileno())
2362
1865
if null > 2:
2363
1866
os.close(null)
1867
else:
1868
# No console logging
1869
logger.removeHandler(console)
2364
1870
2365
1871
# Need to fork before connecting to D-Bus
2366
if not foreground:
1872
if not debug:
2367
1873
# Close all input and output, do double fork, etc.
2368
1874
daemon()
2369
1875
2370
# multiprocessing will use threads, so before we use gobject we
2371
# need to inform gobject that threads will be used.
2372
gobject.threads_init()
2373
2374
1876
global main_loop
2375
1877
# From the Avahi example code
2376
DBusGMainLoop(set_as_default=True)
1878
DBusGMainLoop(set_as_default=True )
2377
1879
main_loop = gobject.MainLoop()
2378
1880
bus = dbus.SystemBus()
2379
1881
# End of Avahi example code
2380
1882
if use_dbus:
2381
1883
try:
2382
bus_name = dbus.service.BusName("se.recompile.Mandos",
1884
bus_name = dbus.service.BusName("se.bsnet.fukt.Mandos",
2383
1885
bus, do_not_queue=True)
2384
old_bus_name = (dbus.service.BusName
2385
("se.bsnet.fukt.Mandos", bus,
2386
do_not_queue=True))
2387
1886
except dbus.exceptions.NameExistsException as e:
2388
logger.error("Disabling D-Bus:", exc_info=e)
1887
logger.error(unicode(e) + ", disabling D-Bus")
2389
1888
use_dbus = False
2390
1889
server_settings["use_dbus"] = False
2391
1890
tcp_server.use_dbus = False
2392
1891
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2393
service = AvahiServiceToSyslog(name =
2394
server_settings["servicename"],
2395
servicetype = "_mandos._tcp",
2396
protocol = protocol, bus = bus)
1892
service = AvahiService(name = server_settings["servicename"],
1893
servicetype = "_mandos._tcp",
1894
protocol = protocol, bus = bus)
2397
1895
if server_settings["interface"]:
2398
1896
service.interface = (if_nametoindex
2399
1897
(str(server_settings["interface"])))
2404
1902
client_class = Client
2405
1903
if use_dbus:
2406
1904
client_class = functools.partial(ClientDBus, bus = bus)
2407
2408
client_settings = Client.config_parser(client_config)
2409
old_client_settings = {}
2410
clients_data = {}
2411
2412
# Get client data and settings from last running state.
2413
if server_settings["restore"]:
2414
try:
2415
with open(stored_state_path, "rb") as stored_state:
2416
clients_data, old_client_settings = (pickle.load
2417
(stored_state))
2418
os.remove(stored_state_path)
2419
except IOError as e:
2420
if e.errno == errno.ENOENT:
2421
logger.warning("Could not load persistent state: {0}"
2422
.format(os.strerror(e.errno)))
2423
else:
2424
logger.critical("Could not load persistent state:",
2425
exc_info=e)
2426
raise
2427
except EOFError as e:
2428
logger.warning("Could not load persistent state: "
2429
"EOFError:", exc_info=e)
2430
2431
with PGPEngine() as pgp:
2432
for client_name, client in clients_data.iteritems():
2433
# Decide which value to use after restoring saved state.
2434
# We have three different values: Old config file,
2435
# new config file, and saved state.
2436
# New config value takes precedence if it differs from old
2437
# config value, otherwise use saved state.
2438
for name, value in client_settings[client_name].items():
2439
try:
2440
# For each value in new config, check if it
2441
# differs from the old config value (Except for
2442
# the "secret" attribute)
2443
if (name != "secret" and
2444
value != old_client_settings[client_name]
2445
[name]):
2446
client[name] = value
2447
except KeyError:
2448
pass
2449
2450
# Clients who has passed its expire date can still be
2451
# enabled if its last checker was successful. Clients
2452
# whose checker succeeded before we stored its state is
2453
# assumed to have successfully run all checkers during
2454
# downtime.
2455
if client["enabled"]:
2456
if datetime.datetime.utcnow() >= client["expires"]:
2457
if not client["last_checked_ok"]:
2458
logger.warning(
2459
"disabling client {0} - Client never "
2460
"performed a successful checker"
2461
.format(client_name))
2462
client["enabled"] = False
2463
elif client["last_checker_status"] != 0:
2464
logger.warning(
2465
"disabling client {0} - Client "
2466
"last checker failed with error code {1}"
2467
.format(client_name,
2468
client["last_checker_status"]))
2469
client["enabled"] = False
2470
else:
2471
client["expires"] = (datetime.datetime
2472
.utcnow()
2473
+ client["timeout"])
2474
logger.debug("Last checker succeeded,"
2475
" keeping {0} enabled"
2476
.format(client_name))
1905
def client_config_items(config, section):
1906
special_settings = {
1907
"approved_by_default":
1908
lambda: config.getboolean(section,
1909
"approved_by_default"),
1910
}
1911
for name, value in config.items(section):
2477
1912
try:
2478
client["secret"] = (
2479
pgp.decrypt(client["encrypted_secret"],
2480
client_settings[client_name]
2481
["secret"]))
2482
except PGPError:
2483
# If decryption fails, we use secret from new settings
2484
logger.debug("Failed to decrypt {0} old secret"
2485
.format(client_name))
2486
client["secret"] = (
2487
client_settings[client_name]["secret"])
2488
2489
# Add/remove clients based on new changes made to config
2490
for client_name in (set(old_client_settings)
2491
- set(client_settings)):
2492
del clients_data[client_name]
2493
for client_name in (set(client_settings)
2494
- set(old_client_settings)):
2495
clients_data[client_name] = client_settings[client_name]
2496
2497
# Create all client objects
2498
for client_name, client in clients_data.iteritems():
2499
tcp_server.clients[client_name] = client_class(
2500
name = client_name, settings = client)
2501
1913
yield (name, special_settings[name]())
1914
except KeyError:
1915
yield (name, value)
1916
1917
tcp_server.clients.update(set(
1918
client_class(name = section,
1919
config= dict(client_config_items(
1920
client_config, section)))
1921
for section in client_config.sections()))
2502
1922
if not tcp_server.clients:
2503
1923
logger.warning("No clients defined")
2504
2505
if not foreground:
2506
if pidfile is not None:
2507
try:
2508
with pidfile:
2509
pid = os.getpid()
2510
pidfile.write(str(pid) + "\n".encode("utf-8"))
2511
except IOError:
2512
logger.error("Could not write to file %r with PID %d",
2513
pidfilename, pid)
2514
del pidfile
1924
1925
if not debug:
1926
try:
1927
with pidfile:
1928
pid = os.getpid()
1929
pidfile.write(str(pid) + "\n".encode("utf-8"))
1930
del pidfile
1931
except IOError:
1932
logger.error("Could not write to file %r with PID %d",
1933
pidfilename, pid)
1934
except NameError:
1935
# "pidfile" was never created
1936
pass
2515
1937
del pidfilename
1938
1939
signal.signal(signal.SIGINT, signal.SIG_IGN)
2516
1940
2517
1941
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2518
1942
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2519
1943
2520
1944
if use_dbus:
2521
@alternate_dbus_interfaces({"se.recompile.Mandos":
2522
"se.bsnet.fukt.Mandos"})
2523
class MandosDBusService(DBusObjectWithProperties):
1945
class MandosDBusService(dbus.service.Object):
2524
1946
"""A D-Bus proxy object"""
2525
1947
def __init__(self):
2526
1948
dbus.service.Object.__init__(self, bus, "/")
2527
_interface = "se.recompile.Mandos"
2528
2529
@dbus_interface_annotations(_interface)
2530
def _foo(self):
2531
return { "org.freedesktop.DBus.Property"
2532
".EmitsChangedSignal":
2533
"false"}
1949
_interface = "se.bsnet.fukt.Mandos"
2534
1950
2535
1951
@dbus.service.signal(_interface, signature="o")
2536
1952
def ClientAdded(self, objpath):
2551
1967
def GetAllClients(self):
2552
1968
"D-Bus method"
2553
1969
return dbus.Array(c.dbus_object_path
2554
for c in
2555
tcp_server.clients.itervalues())
1970
for c in tcp_server.clients)
2556
1971
2557
1972
@dbus.service.method(_interface,
2558
1973
out_signature="a{oa{sv}}")
2560
1975
"D-Bus method"
2561
1976
return dbus.Dictionary(
2562
1977
((c.dbus_object_path, c.GetAll(""))
2563
for c in tcp_server.clients.itervalues()),
1978
for c in tcp_server.clients),
2564
1979
signature="oa{sv}")
2565
1980
2566
1981
@dbus.service.method(_interface, in_signature="o")
2567
1982
def RemoveClient(self, object_path):
2568
1983
"D-Bus method"
2569
for c in tcp_server.clients.itervalues():
1984
for c in tcp_server.clients:
2570
1985
if c.dbus_object_path == object_path:
2571
del tcp_server.clients[c.name]
1986
tcp_server.clients.remove(c)
2572
1987
c.remove_from_connection()
2573
1988
# Don't signal anything except ClientRemoved
2574
1989
c.disable(quiet=True)
2585
2000
"Cleanup function; run on exit"
2586
2001
service.cleanup()
2587
2002
2588
multiprocessing.active_children()
2589
if not (tcp_server.clients or client_settings):
2590
return
2591
2592
# Store client before exiting. Secrets are encrypted with key
2593
# based on what config file has. If config file is
2594
# removed/edited, old secret will thus be unrecovable.
2595
clients = {}
2596
with PGPEngine() as pgp:
2597
for client in tcp_server.clients.itervalues():
2598
key = client_settings[client.name]["secret"]
2599
client.encrypted_secret = pgp.encrypt(client.secret,
2600
key)
2601
client_dict = {}
2602
2603
# A list of attributes that can not be pickled
2604
# + secret.
2605
exclude = set(("bus", "changedstate", "secret",
2606
"checker"))
2607
for name, typ in (inspect.getmembers
2608
(dbus.service.Object)):
2609
exclude.add(name)
2610
2611
client_dict["encrypted_secret"] = (client
2612
.encrypted_secret)
2613
for attr in client.client_structure:
2614
if attr not in exclude:
2615
client_dict[attr] = getattr(client, attr)
2616
2617
clients[client.name] = client_dict
2618
del client_settings[client.name]["secret"]
2619
2620
try:
2621
with (tempfile.NamedTemporaryFile
2622
(mode='wb', suffix=".pickle", prefix='clients-',
2623
dir=os.path.dirname(stored_state_path),
2624
delete=False)) as stored_state:
2625
pickle.dump((clients, client_settings), stored_state)
2626
tempname=stored_state.name
2627
os.rename(tempname, stored_state_path)
2628
except (IOError, OSError) as e:
2629
if not debug:
2630
try:
2631
os.remove(tempname)
2632
except NameError:
2633
pass
2634
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
2635
logger.warning("Could not save persistent state: {0}"
2636
.format(os.strerror(e.errno)))
2637
else:
2638
logger.warning("Could not save persistent state:",
2639
exc_info=e)
2640
raise e
2641
2642
# Delete all clients, and settings from config
2643
2003
while tcp_server.clients:
2644
name, client = tcp_server.clients.popitem()
2004
client = tcp_server.clients.pop()
2645
2005
if use_dbus:
2646
2006
client.remove_from_connection()
2007
client.disable_hook = None
2647
2008
# Don't signal anything except ClientRemoved
2648
2009
client.disable(quiet=True)
2649
2010
if use_dbus:
2650
2011
# Emit D-Bus signal
2651
mandos_dbus_service.ClientRemoved(client
2652
.dbus_object_path,
2012
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
2653
2013
client.name)
2654
client_settings.clear()
2655
2014
2656
2015
atexit.register(cleanup)
2657
2016
2658
for client in tcp_server.clients.itervalues():
2017
for client in tcp_server.clients:
2659
2018
if use_dbus:
2660
2019
# Emit D-Bus signal
2661
2020
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2662
# Need to initiate checking of clients
2663
if client.enabled:
2664
client.init_checker()
2021
client.enable()
2665
2022
2666
2023
tcp_server.enable()
2667
2024
tcp_server.server_activate()
2670
2027
service.port = tcp_server.socket.getsockname()[1]
2671
2028
if use_ipv6:
2672
2029
logger.info("Now listening on address %r, port %d,"
2673
" flowinfo %d, scope_id %d",
2674
*tcp_server.socket.getsockname())
2030
" flowinfo %d, scope_id %d"
2031
% tcp_server.socket.getsockname())
2675
2032
else: # IPv4
2676
logger.info("Now listening on address %r, port %d",
2677
*tcp_server.socket.getsockname())
2033
logger.info("Now listening on address %r, port %d"
2034
% tcp_server.socket.getsockname())
2678
2035
2679
2036
#service.interface = tcp_server.socket.getsockname()[3]
2680
2037
2683
2040
try:
2684
2041
service.activate()
2685
2042
except dbus.exceptions.DBusException as error:
2686
logger.critical("D-Bus Exception", exc_info=error)
2043
logger.critical("DBusException: %s", error)
2687
2044
cleanup()
2688
2045
sys.exit(1)
2689
2046
# End of Avahi example code
2696
2053
logger.debug("Starting main loop")
2697
2054
main_loop.run()
2698
2055
except AvahiError as error:
2699
logger.critical("Avahi Error", exc_info=error)
2056
logger.critical("AvahiError: %s", error)
2700
2057
cleanup()
2701
2058
sys.exit(1)
2702
2059
except KeyboardInterrupt:
2707
2064
# Must run before the D-Bus bus name gets deregistered
2708
2065
cleanup()
2709
2066
2067
2710
2068
if __name__ == '__main__':
2711
2069
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0