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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
#
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# Everything else is
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# Copyright © 2008-2014 Teddy Hogeborn
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# Copyright © 2008-2014 Björn Påhlsson
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# Copyright © 2008-2011 Teddy Hogeborn
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# Copyright © 2008-2011 Björn Påhlsson
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# along with this program. If not, see
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# <http://www.gnu.org/licenses/>.
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#
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
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import SocketServer as socketserver
40
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import socket
41
39
import argparse
64
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import functools
65
63
import cPickle as pickle
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64
import multiprocessing
67
import types
68
import binascii
69
import tempfile
70
import itertools
71
import collections
72
65
73
66
import dbus
74
67
import dbus.service
88
81
except ImportError:
89
82
SO_BINDTODEVICE = None
90
83
91
version = "1.6.2"
92
stored_state_file = "clients.pickle"
93
94
logger = logging.getLogger()
84
85
version = "1.3.1"
86
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#logger = logging.getLogger('mandos')
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logger = logging.Logger('mandos')
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89
syslogger = (logging.handlers.SysLogHandler
96
90
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
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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.tempdir = tempfile.mkdtemp(prefix="mandos-")
143
self.gnupgargs = ['--batch',
144
'--home', self.tempdir,
145
'--force-mdc',
146
'--quiet',
147
'--no-use-agent']
148
149
def __enter__(self):
150
return self
151
152
def __exit__(self, exc_type, exc_value, traceback):
153
self._cleanup()
154
return False
155
156
def __del__(self):
157
self._cleanup()
158
159
def _cleanup(self):
160
if self.tempdir is not None:
161
# Delete contents of tempdir
162
for root, dirs, files in os.walk(self.tempdir,
163
topdown = False):
164
for filename in files:
165
os.remove(os.path.join(root, filename))
166
for dirname in dirs:
167
os.rmdir(os.path.join(root, dirname))
168
# Remove tempdir
169
os.rmdir(self.tempdir)
170
self.tempdir = None
171
172
def password_encode(self, password):
173
# Passphrase can not be empty and can not contain newlines or
174
# NUL bytes. So we prefix it and hex encode it.
175
encoded = b"mandos" + binascii.hexlify(password)
176
if len(encoded) > 2048:
177
# GnuPG can't handle long passwords, so encode differently
178
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
179
.replace(b"\n", b"\\n")
180
.replace(b"\0", b"\\x00"))
181
return encoded
182
183
def encrypt(self, data, password):
184
passphrase = self.password_encode(password)
185
with tempfile.NamedTemporaryFile(dir=self.tempdir
186
) as passfile:
187
passfile.write(passphrase)
188
passfile.flush()
189
proc = subprocess.Popen(['gpg', '--symmetric',
190
'--passphrase-file',
191
passfile.name]
192
+ self.gnupgargs,
193
stdin = subprocess.PIPE,
194
stdout = subprocess.PIPE,
195
stderr = subprocess.PIPE)
196
ciphertext, err = proc.communicate(input = data)
197
if proc.returncode != 0:
198
raise PGPError(err)
199
return ciphertext
200
201
def decrypt(self, data, password):
202
passphrase = self.password_encode(password)
203
with tempfile.NamedTemporaryFile(dir = self.tempdir
204
) as passfile:
205
passfile.write(passphrase)
206
passfile.flush()
207
proc = subprocess.Popen(['gpg', '--decrypt',
208
'--passphrase-file',
209
passfile.name]
210
+ self.gnupgargs,
211
stdin = subprocess.PIPE,
212
stdout = subprocess.PIPE,
213
stderr = subprocess.PIPE)
214
decrypted_plaintext, err = proc.communicate(input
215
= data)
216
if proc.returncode != 0:
217
raise PGPError(err)
218
return decrypted_plaintext
219
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)
220
102
221
103
class AvahiError(Exception):
222
104
def __init__(self, value, *args, **kwargs):
240
122
Used to optionally bind to the specified interface.
241
123
name: string; Example: 'Mandos'
242
124
type: string; Example: '_mandos._tcp'.
243
See <https://www.iana.org/assignments/service-names-port-numbers>
125
See <http://www.dns-sd.org/ServiceTypes.html>
244
126
port: integer; what port to announce
245
127
TXT: list of strings; TXT record for the service
246
128
domain: string; Domain to publish on, default to .local if empty.
252
134
server: D-Bus Server
253
135
bus: dbus.SystemBus()
254
136
"""
255
256
137
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
257
138
servicetype = None, port = None, TXT = None,
258
139
domain = "", host = "", max_renames = 32768,
271
152
self.server = None
272
153
self.bus = bus
273
154
self.entry_group_state_changed_match = None
274
275
155
def rename(self):
276
156
"""Derived from the Avahi example code"""
277
157
if self.rename_count >= self.max_renames:
279
159
" after %i retries, exiting.",
280
160
self.rename_count)
281
161
raise AvahiServiceError("Too many renames")
282
self.name = unicode(self.server
283
.GetAlternativeServiceName(self.name))
162
self.name = unicode(self.server.GetAlternativeServiceName(self.name))
284
163
logger.info("Changing Zeroconf service name to %r ...",
285
164
self.name)
165
syslogger.setFormatter(logging.Formatter
166
('Mandos (%s) [%%(process)d]:'
167
' %%(levelname)s: %%(message)s'
168
% self.name))
286
169
self.remove()
287
170
try:
288
171
self.add()
289
172
except dbus.exceptions.DBusException as error:
290
logger.critical("D-Bus Exception", exc_info=error)
173
logger.critical("DBusException: %s", error)
291
174
self.cleanup()
292
175
os._exit(1)
293
176
self.rename_count += 1
294
295
177
def remove(self):
296
178
"""Derived from the Avahi example code"""
297
179
if self.entry_group_state_changed_match is not None:
299
181
self.entry_group_state_changed_match = None
300
182
if self.group is not None:
301
183
self.group.Reset()
302
303
184
def add(self):
304
185
"""Derived from the Avahi example code"""
305
186
self.remove()
310
191
avahi.DBUS_INTERFACE_ENTRY_GROUP)
311
192
self.entry_group_state_changed_match = (
312
193
self.group.connect_to_signal(
313
'StateChanged', self.entry_group_state_changed))
194
'StateChanged', self .entry_group_state_changed))
314
195
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
315
196
self.name, self.type)
316
197
self.group.AddService(
322
203
dbus.UInt16(self.port),
323
204
avahi.string_array_to_txt_array(self.TXT))
324
205
self.group.Commit()
325
326
206
def entry_group_state_changed(self, state, error):
327
207
"""Derived from the Avahi example code"""
328
208
logger.debug("Avahi entry group state change: %i", state)
335
215
elif state == avahi.ENTRY_GROUP_FAILURE:
336
216
logger.critical("Avahi: Error in group state changed %s",
337
217
unicode(error))
338
raise AvahiGroupError("State changed: {0!s}"
339
.format(error))
340
218
raise AvahiGroupError("State changed: %s"
219
% unicode(error))
341
220
def cleanup(self):
342
221
"""Derived from the Avahi example code"""
343
222
if self.group is not None:
344
223
try:
345
224
self.group.Free()
346
225
except (dbus.exceptions.UnknownMethodException,
347
dbus.exceptions.DBusException):
226
dbus.exceptions.DBusException) as e:
348
227
pass
349
228
self.group = None
350
229
self.remove()
351
352
230
def server_state_changed(self, state, error=None):
353
231
"""Derived from the Avahi example code"""
354
232
logger.debug("Avahi server state change: %i", state)
373
251
logger.debug("Unknown state: %r", state)
374
252
else:
375
253
logger.debug("Unknown state: %r: %r", state, error)
376
377
254
def activate(self):
378
255
"""Derived from the Avahi example code"""
379
256
if self.server is None:
387
264
self.server_state_changed(self.server.GetState())
388
265
389
266
390
class AvahiServiceToSyslog(AvahiService):
391
def rename(self):
392
"""Add the new name to the syslog messages"""
393
ret = AvahiService.rename(self)
394
syslogger.setFormatter(logging.Formatter
395
('Mandos ({0}) [%(process)d]:'
396
' %(levelname)s: %(message)s'
397
.format(self.name)))
398
return ret
399
400
401
def timedelta_to_milliseconds(td):
267
def _timedelta_to_milliseconds(td):
402
268
"Convert a datetime.timedelta() to milliseconds"
403
269
return ((td.days * 24 * 60 * 60 * 1000)
404
270
+ (td.seconds * 1000)
405
271
+ (td.microseconds // 1000))
406
407
272
408
273
class Client(object):
409
274
"""A representation of a client host served by this server.
410
275
411
276
Attributes:
412
approved: bool(); 'None' if not yet approved/disapproved
277
_approved: bool(); 'None' if not yet approved/disapproved
413
278
approval_delay: datetime.timedelta(); Time to wait for approval
414
279
approval_duration: datetime.timedelta(); Duration of one approval
415
280
checker: subprocess.Popen(); a running checker process used
422
287
instance %(name)s can be used in the command.
423
288
checker_initiator_tag: a gobject event source tag, or None
424
289
created: datetime.datetime(); (UTC) object creation
425
client_structure: Object describing what attributes a client has
426
and is used for storing the client at exit
427
290
current_checker_command: string; current running checker_command
291
disable_hook: If set, called by disable() as disable_hook(self)
428
292
disable_initiator_tag: a gobject event source tag, or None
429
293
enabled: bool()
430
294
fingerprint: string (40 or 32 hexadecimal digits); used to
433
297
interval: datetime.timedelta(); How often to start a new checker
434
298
last_approval_request: datetime.datetime(); (UTC) or None
435
299
last_checked_ok: datetime.datetime(); (UTC) or None
436
last_checker_status: integer between 0 and 255 reflecting exit
437
status of last checker. -1 reflects crashed
438
checker, -2 means no checker completed yet.
439
last_enabled: datetime.datetime(); (UTC) or None
300
last_enabled: datetime.datetime(); (UTC)
440
301
name: string; from the config file, used in log messages and
441
302
D-Bus identifiers
442
303
secret: bytestring; sent verbatim (over TLS) to client
443
304
timeout: datetime.timedelta(); How long from last_checked_ok
444
305
until this client is disabled
445
extended_timeout: extra long timeout when secret has been sent
306
extended_timeout: extra long timeout when password has been sent
446
307
runtime_expansions: Allowed attributes for runtime expansion.
447
308
expires: datetime.datetime(); time (UTC) when a client will be
448
309
disabled, or None
449
server_settings: The server_settings dict from main()
450
310
"""
451
311
452
312
runtime_expansions = ("approval_delay", "approval_duration",
453
"created", "enabled", "expires",
454
"fingerprint", "host", "interval",
455
"last_approval_request", "last_checked_ok",
313
"created", "enabled", "fingerprint",
314
"host", "interval", "last_checked_ok",
456
315
"last_enabled", "name", "timeout")
457
client_defaults = { "timeout": "PT5M",
458
"extended_timeout": "PT15M",
459
"interval": "PT2M",
460
"checker": "fping -q -- %%(host)s",
461
"host": "",
462
"approval_delay": "PT0S",
463
"approval_duration": "PT1S",
464
"approved_by_default": "True",
465
"enabled": "True",
466
}
467
316
468
317
def timeout_milliseconds(self):
469
318
"Return the 'timeout' attribute in milliseconds"
470
return timedelta_to_milliseconds(self.timeout)
319
return _timedelta_to_milliseconds(self.timeout)
471
320
472
321
def extended_timeout_milliseconds(self):
473
322
"Return the 'extended_timeout' attribute in milliseconds"
474
return timedelta_to_milliseconds(self.extended_timeout)
323
return _timedelta_to_milliseconds(self.extended_timeout)
475
324
476
325
def interval_milliseconds(self):
477
326
"Return the 'interval' attribute in milliseconds"
478
return timedelta_to_milliseconds(self.interval)
327
return _timedelta_to_milliseconds(self.interval)
479
328
480
329
def approval_delay_milliseconds(self):
481
return timedelta_to_milliseconds(self.approval_delay)
482
483
@staticmethod
484
def config_parser(config):
485
"""Construct a new dict of client settings of this form:
486
{ client_name: {setting_name: value, ...}, ...}
487
with exceptions for any special settings as defined above.
488
NOTE: Must be a pure function. Must return the same result
489
value given the same arguments.
490
"""
491
settings = {}
492
for client_name in config.sections():
493
section = dict(config.items(client_name))
494
client = settings[client_name] = {}
495
496
client["host"] = section["host"]
497
# Reformat values from string types to Python types
498
client["approved_by_default"] = config.getboolean(
499
client_name, "approved_by_default")
500
client["enabled"] = config.getboolean(client_name,
501
"enabled")
502
503
client["fingerprint"] = (section["fingerprint"].upper()
504
.replace(" ", ""))
505
if "secret" in section:
506
client["secret"] = section["secret"].decode("base64")
507
elif "secfile" in section:
508
with open(os.path.expanduser(os.path.expandvars
509
(section["secfile"])),
510
"rb") as secfile:
511
client["secret"] = secfile.read()
512
else:
513
raise TypeError("No secret or secfile for section {0}"
514
.format(section))
515
client["timeout"] = string_to_delta(section["timeout"])
516
client["extended_timeout"] = string_to_delta(
517
section["extended_timeout"])
518
client["interval"] = string_to_delta(section["interval"])
519
client["approval_delay"] = string_to_delta(
520
section["approval_delay"])
521
client["approval_duration"] = string_to_delta(
522
section["approval_duration"])
523
client["checker_command"] = section["checker"]
524
client["last_approval_request"] = None
525
client["last_checked_ok"] = None
526
client["last_checker_status"] = -2
527
528
return settings
529
530
def __init__(self, settings, name = None, server_settings=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."""
531
336
self.name = name
532
if server_settings is None:
533
server_settings = {}
534
self.server_settings = server_settings
535
# adding all client settings
536
for setting, value in settings.iteritems():
537
setattr(self, setting, value)
538
539
if self.enabled:
540
if not hasattr(self, "last_enabled"):
541
self.last_enabled = datetime.datetime.utcnow()
542
if not hasattr(self, "expires"):
543
self.expires = (datetime.datetime.utcnow()
544
+ self.timeout)
545
else:
546
self.last_enabled = None
547
self.expires = None
548
337
if config is None:
338
config = {}
549
339
logger.debug("Creating client %r", self.name)
550
340
# Uppercase and remove spaces from fingerprint for later
551
341
# comparison purposes with return value from the fingerprint()
552
342
# function
343
self.fingerprint = (config["fingerprint"].upper()
344
.replace(" ", ""))
553
345
logger.debug(" Fingerprint: %s", self.fingerprint)
554
self.created = settings.get("created",
555
datetime.datetime.utcnow())
556
557
# 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
558
366
self.checker = None
559
367
self.checker_initiator_tag = None
560
368
self.disable_initiator_tag = None
369
self.expires = None
561
370
self.checker_callback_tag = None
371
self.checker_command = config["checker"]
562
372
self.current_checker_command = None
563
self.approved = None
373
self.last_connect = None
374
self._approved = None
375
self.approved_by_default = config.get("approved_by_default",
376
True)
564
377
self.approvals_pending = 0
565
self.changedstate = (multiprocessing_manager
566
.Condition(multiprocessing_manager
567
.Lock()))
568
self.client_structure = [attr for attr in
569
self.__dict__.iterkeys()
570
if not attr.startswith("_")]
571
self.client_structure.append("client_structure")
572
573
for name, t in inspect.getmembers(type(self),
574
lambda obj:
575
isinstance(obj,
576
property)):
577
if not name.startswith("_"):
578
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())
579
383
580
# Send notice to process children that client state has changed
581
384
def send_changedstate(self):
582
with self.changedstate:
583
self.changedstate.notify_all()
584
385
self.changedstate.acquire()
386
self.changedstate.notify_all()
387
self.changedstate.release()
388
585
389
def enable(self):
586
390
"""Start this client's checker and timeout hooks"""
587
391
if getattr(self, "enabled", False):
588
392
# Already enabled
589
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
590
401
self.expires = datetime.datetime.utcnow() + self.timeout
402
self.disable_initiator_tag = (gobject.timeout_add
403
(self.timeout_milliseconds(),
404
self.disable))
591
405
self.enabled = True
592
406
self.last_enabled = datetime.datetime.utcnow()
593
self.init_checker()
594
self.send_changedstate()
407
# Also start a new checker *right now*.
408
self.start_checker()
595
409
596
410
def disable(self, quiet=True):
597
411
"""Disable this client."""
598
412
if not getattr(self, "enabled", False):
599
413
return False
600
414
if not quiet:
415
self.send_changedstate()
416
if not quiet:
601
417
logger.info("Disabling client %s", self.name)
602
if getattr(self, "disable_initiator_tag", None) is not None:
418
if getattr(self, "disable_initiator_tag", False):
603
419
gobject.source_remove(self.disable_initiator_tag)
604
420
self.disable_initiator_tag = None
605
421
self.expires = None
606
if getattr(self, "checker_initiator_tag", None) is not None:
422
if getattr(self, "checker_initiator_tag", False):
607
423
gobject.source_remove(self.checker_initiator_tag)
608
424
self.checker_initiator_tag = None
609
425
self.stop_checker()
426
if self.disable_hook:
427
self.disable_hook(self)
610
428
self.enabled = False
611
if not quiet:
612
self.send_changedstate()
613
429
# Do not run this again if called by a gobject.timeout_add
614
430
return False
615
431
616
432
def __del__(self):
433
self.disable_hook = None
617
434
self.disable()
618
435
619
def init_checker(self):
620
# Schedule a new checker to be started an 'interval' from now,
621
# and every interval from then on.
622
if self.checker_initiator_tag is not None:
623
gobject.source_remove(self.checker_initiator_tag)
624
self.checker_initiator_tag = (gobject.timeout_add
625
(self.interval_milliseconds(),
626
self.start_checker))
627
# Schedule a disable() when 'timeout' has passed
628
if self.disable_initiator_tag is not None:
629
gobject.source_remove(self.disable_initiator_tag)
630
self.disable_initiator_tag = (gobject.timeout_add
631
(self.timeout_milliseconds(),
632
self.disable))
633
# Also start a new checker *right now*.
634
self.start_checker()
635
636
436
def checker_callback(self, pid, condition, command):
637
437
"""The checker has completed, so take appropriate actions."""
638
438
self.checker_callback_tag = None
639
439
self.checker = None
640
440
if os.WIFEXITED(condition):
641
self.last_checker_status = os.WEXITSTATUS(condition)
642
if self.last_checker_status == 0:
441
exitstatus = os.WEXITSTATUS(condition)
442
if exitstatus == 0:
643
443
logger.info("Checker for %(name)s succeeded",
644
444
vars(self))
645
445
self.checked_ok()
647
447
logger.info("Checker for %(name)s failed",
648
448
vars(self))
649
449
else:
650
self.last_checker_status = -1
651
450
logger.warning("Checker for %(name)s crashed?",
652
451
vars(self))
653
452
654
def checked_ok(self):
655
"""Assert that the client has been seen, alive and well."""
656
self.last_checked_ok = datetime.datetime.utcnow()
657
self.last_checker_status = 0
658
self.bump_timeout()
659
660
def bump_timeout(self, timeout=None):
661
"""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
"""
662
459
if timeout is None:
663
460
timeout = self.timeout
664
if self.disable_initiator_tag is not None:
665
gobject.source_remove(self.disable_initiator_tag)
666
self.disable_initiator_tag = None
667
if getattr(self, "enabled", False):
668
self.disable_initiator_tag = (gobject.timeout_add
669
(timedelta_to_milliseconds
670
(timeout), self.disable))
671
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))
672
467
673
468
def need_approval(self):
674
469
self.last_approval_request = datetime.datetime.utcnow()
679
474
If a checker already exists, leave it running and do
680
475
nothing."""
681
476
# The reason for not killing a running checker is that if we
682
# did that, and if a checker (for some reason) started running
683
# slowly and taking more than 'interval' time, then the client
684
# would inevitably timeout, since no checker would get a
685
# 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
686
481
# checkers alone, the checker would have to take more time
687
482
# than 'timeout' for the client to be disabled, which is as it
688
483
# should be.
690
485
# If a checker exists, make sure it is not a zombie
691
486
try:
692
487
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
693
except AttributeError:
694
pass
695
except OSError as error:
696
if error.errno != errno.ECHILD:
697
raise
488
except (AttributeError, OSError) as error:
489
if (isinstance(error, OSError)
490
and error.errno != errno.ECHILD):
491
raise error
698
492
else:
699
493
if pid:
700
494
logger.warning("Checker was a zombie")
703
497
self.current_checker_command)
704
498
# Start a new checker if needed
705
499
if self.checker is None:
706
# Escape attributes for the shell
707
escaped_attrs = dict(
708
(attr, re.escape(unicode(getattr(self, attr))))
709
for attr in
710
self.runtime_expansions)
711
500
try:
712
command = self.checker_command % escaped_attrs
713
except TypeError as error:
714
logger.error('Could not format string "%s"',
715
self.checker_command, exc_info=error)
716
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
717
519
self.current_checker_command = command
718
520
try:
719
521
logger.info("Starting checker %r for %s",
722
524
# in normal mode, that is already done by daemon(),
723
525
# and in debug mode we don't want to. (Stdin is
724
526
# always replaced by /dev/null.)
725
# The exception is when not debugging but nevertheless
726
# running in the foreground; use the previously
727
# created wnull.
728
popen_args = {}
729
if (not self.server_settings["debug"]
730
and self.server_settings["foreground"]):
731
popen_args.update({"stdout": wnull,
732
"stderr": wnull })
733
527
self.checker = subprocess.Popen(command,
734
528
close_fds=True,
735
shell=True, cwd="/",
736
**popen_args)
737
except OSError as error:
738
logger.error("Failed to start subprocess",
739
exc_info=error)
740
return True
741
self.checker_callback_tag = (gobject.child_watch_add
742
(self.checker.pid,
743
self.checker_callback,
744
data=command))
745
# The checker may have completed before the gobject
746
# watch was added. Check for this.
747
try:
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.
748
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)
749
540
except OSError as error:
750
if error.errno == errno.ECHILD:
751
# This should never happen
752
logger.error("Child process vanished",
753
exc_info=error)
754
return True
755
raise
756
if pid:
757
gobject.source_remove(self.checker_callback_tag)
758
self.checker_callback(pid, status, command)
541
logger.error("Failed to start subprocess: %s",
542
error)
759
543
# Re-run this periodically if run by gobject.timeout_add
760
544
return True
761
545
768
552
return
769
553
logger.debug("Stopping checker for %(name)s", vars(self))
770
554
try:
771
self.checker.terminate()
555
os.kill(self.checker.pid, signal.SIGTERM)
772
556
#time.sleep(0.5)
773
557
#if self.checker.poll() is None:
774
# self.checker.kill()
558
# os.kill(self.checker.pid, signal.SIGKILL)
775
559
except OSError as error:
776
560
if error.errno != errno.ESRCH: # No such process
777
561
raise
794
578
# "Set" method, so we fail early here:
795
579
if byte_arrays and signature != "ay":
796
580
raise ValueError("Byte arrays not supported for non-'ay'"
797
" signature {0!r}".format(signature))
581
" signature %r" % signature)
798
582
def decorator(func):
799
583
func._dbus_is_property = True
800
584
func._dbus_interface = dbus_interface
808
592
return decorator
809
593
810
594
811
def dbus_interface_annotations(dbus_interface):
812
"""Decorator for marking functions returning interface annotations
813
814
Usage:
815
816
@dbus_interface_annotations("org.example.Interface")
817
def _foo(self): # Function name does not matter
818
return {"org.freedesktop.DBus.Deprecated": "true",
819
"org.freedesktop.DBus.Property.EmitsChangedSignal":
820
"false"}
821
"""
822
def decorator(func):
823
func._dbus_is_interface = True
824
func._dbus_interface = dbus_interface
825
func._dbus_name = dbus_interface
826
return func
827
return decorator
828
829
830
def dbus_annotations(annotations):
831
"""Decorator to annotate D-Bus methods, signals or properties
832
Usage:
833
834
@dbus_service_property("org.example.Interface", signature="b",
835
access="r")
836
@dbus_annotations({{"org.freedesktop.DBus.Deprecated": "true",
837
"org.freedesktop.DBus.Property."
838
"EmitsChangedSignal": "false"})
839
def Property_dbus_property(self):
840
return dbus.Boolean(False)
841
"""
842
def decorator(func):
843
func._dbus_annotations = annotations
844
return func
845
return decorator
846
847
848
595
class DBusPropertyException(dbus.exceptions.DBusException):
849
596
"""A base class for D-Bus property-related exceptions
850
597
"""
873
620
"""
874
621
875
622
@staticmethod
876
def _is_dbus_thing(thing):
877
"""Returns a function testing if an attribute is a D-Bus thing
878
879
If called like _is_dbus_thing("method") it returns a function
880
suitable for use as predicate to inspect.getmembers().
881
"""
882
return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),
883
False)
623
def _is_dbus_property(obj):
624
return getattr(obj, "_dbus_is_property", False)
884
625
885
def _get_all_dbus_things(self, thing):
626
def _get_all_dbus_properties(self):
886
627
"""Returns a generator of (name, attribute) pairs
887
628
"""
888
return ((getattr(athing.__get__(self), "_dbus_name",
889
name),
890
athing.__get__(self))
891
for cls in self.__class__.__mro__
892
for name, athing in
893
inspect.getmembers(cls,
894
self._is_dbus_thing(thing)))
629
return ((prop._dbus_name, prop)
630
for name, prop in
631
inspect.getmembers(self, self._is_dbus_property))
895
632
896
633
def _get_dbus_property(self, interface_name, property_name):
897
634
"""Returns a bound method if one exists which is a D-Bus
898
635
property with the specified name and interface.
899
636
"""
900
for cls in self.__class__.__mro__:
901
for name, value in (inspect.getmembers
902
(cls,
903
self._is_dbus_thing("property"))):
904
if (value._dbus_name == property_name
905
and value._dbus_interface == interface_name):
906
return value.__get__(self)
907
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
908
647
# No such property
909
648
raise DBusPropertyNotFound(self.dbus_object_path + ":"
910
649
+ interface_name + "."
934
673
# The byte_arrays option is not supported yet on
935
674
# signatures other than "ay".
936
675
if prop._dbus_signature != "ay":
937
raise ValueError("Byte arrays not supported for non-"
938
"'ay' signature {0!r}"
939
.format(prop._dbus_signature))
940
value = dbus.ByteArray(b''.join(chr(byte)
941
for byte in value))
676
raise ValueError
677
value = dbus.ByteArray(''.join(unichr(byte)
678
for byte in value))
942
679
prop(value)
943
680
944
681
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
949
686
950
687
Note: Will not include properties with access="write".
951
688
"""
952
properties = {}
953
for name, prop in self._get_all_dbus_things("property"):
689
all = {}
690
for name, prop in self._get_all_dbus_properties():
954
691
if (interface_name
955
692
and interface_name != prop._dbus_interface):
956
693
# Interface non-empty but did not match
960
697
continue
961
698
value = prop()
962
699
if not hasattr(value, "variant_level"):
963
properties[name] = value
700
all[name] = value
964
701
continue
965
properties[name] = type(value)(value, variant_level=
966
value.variant_level+1)
967
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")
968
705
969
706
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
970
707
out_signature="s",
971
708
path_keyword='object_path',
972
709
connection_keyword='connection')
973
710
def Introspect(self, object_path, connection):
974
"""Overloading of standard D-Bus method.
975
976
Inserts property tags and interface annotation tags.
711
"""Standard D-Bus method, overloaded to insert property tags.
977
712
"""
978
713
xmlstring = dbus.service.Object.Introspect(self, object_path,
979
714
connection)
986
721
e.setAttribute("access", prop._dbus_access)
987
722
return e
988
723
for if_tag in document.getElementsByTagName("interface"):
989
# Add property tags
990
724
for tag in (make_tag(document, name, prop)
991
725
for name, prop
992
in self._get_all_dbus_things("property")
726
in self._get_all_dbus_properties()
993
727
if prop._dbus_interface
994
728
== if_tag.getAttribute("name")):
995
729
if_tag.appendChild(tag)
996
# Add annotation tags
997
for typ in ("method", "signal", "property"):
998
for tag in if_tag.getElementsByTagName(typ):
999
annots = dict()
1000
for name, prop in (self.
1001
_get_all_dbus_things(typ)):
1002
if (name == tag.getAttribute("name")
1003
and prop._dbus_interface
1004
== if_tag.getAttribute("name")):
1005
annots.update(getattr
1006
(prop,
1007
"_dbus_annotations",
1008
{}))
1009
for name, value in annots.iteritems():
1010
ann_tag = document.createElement(
1011
"annotation")
1012
ann_tag.setAttribute("name", name)
1013
ann_tag.setAttribute("value", value)
1014
tag.appendChild(ann_tag)
1015
# Add interface annotation tags
1016
for annotation, value in dict(
1017
itertools.chain.from_iterable(
1018
annotations().iteritems()
1019
for name, annotations in
1020
self._get_all_dbus_things("interface")
1021
if name == if_tag.getAttribute("name")
1022
)).iteritems():
1023
ann_tag = document.createElement("annotation")
1024
ann_tag.setAttribute("name", annotation)
1025
ann_tag.setAttribute("value", value)
1026
if_tag.appendChild(ann_tag)
1027
730
# Add the names to the return values for the
1028
731
# "org.freedesktop.DBus.Properties" methods
1029
732
if (if_tag.getAttribute("name")
1044
747
except (AttributeError, xml.dom.DOMException,
1045
748
xml.parsers.expat.ExpatError) as error:
1046
749
logger.error("Failed to override Introspection method",
1047
exc_info=error)
750
error)
1048
751
return xmlstring
1049
752
1050
753
1051
def datetime_to_dbus(dt, variant_level=0):
754
def datetime_to_dbus (dt, variant_level=0):
1052
755
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1053
756
if dt is None:
1054
757
return dbus.String("", variant_level = variant_level)
1056
759
variant_level=variant_level)
1057
760
1058
761
1059
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1060
"""A class decorator; applied to a subclass of
1061
dbus.service.Object, it will add alternate D-Bus attributes with
1062
interface names according to the "alt_interface_names" mapping.
1063
Usage:
1064
1065
@alternate_dbus_interfaces({"org.example.Interface":
1066
"net.example.AlternateInterface"})
1067
class SampleDBusObject(dbus.service.Object):
1068
@dbus.service.method("org.example.Interface")
1069
def SampleDBusMethod():
1070
pass
1071
1072
The above "SampleDBusMethod" on "SampleDBusObject" will be
1073
reachable via two interfaces: "org.example.Interface" and
1074
"net.example.AlternateInterface", the latter of which will have
1075
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1076
"true", unless "deprecate" is passed with a False value.
1077
1078
This works for methods and signals, and also for D-Bus properties
1079
(from DBusObjectWithProperties) and interfaces (from the
1080
dbus_interface_annotations decorator).
1081
"""
1082
def wrapper(cls):
1083
for orig_interface_name, alt_interface_name in (
1084
alt_interface_names.iteritems()):
1085
attr = {}
1086
interface_names = set()
1087
# Go though all attributes of the class
1088
for attrname, attribute in inspect.getmembers(cls):
1089
# Ignore non-D-Bus attributes, and D-Bus attributes
1090
# with the wrong interface name
1091
if (not hasattr(attribute, "_dbus_interface")
1092
or not attribute._dbus_interface
1093
.startswith(orig_interface_name)):
1094
continue
1095
# Create an alternate D-Bus interface name based on
1096
# the current name
1097
alt_interface = (attribute._dbus_interface
1098
.replace(orig_interface_name,
1099
alt_interface_name))
1100
interface_names.add(alt_interface)
1101
# Is this a D-Bus signal?
1102
if getattr(attribute, "_dbus_is_signal", False):
1103
# Extract the original non-method undecorated
1104
# function by black magic
1105
nonmethod_func = (dict(
1106
zip(attribute.func_code.co_freevars,
1107
attribute.__closure__))["func"]
1108
.cell_contents)
1109
# Create a new, but exactly alike, function
1110
# object, and decorate it to be a new D-Bus signal
1111
# with the alternate D-Bus interface name
1112
new_function = (dbus.service.signal
1113
(alt_interface,
1114
attribute._dbus_signature)
1115
(types.FunctionType(
1116
nonmethod_func.func_code,
1117
nonmethod_func.func_globals,
1118
nonmethod_func.func_name,
1119
nonmethod_func.func_defaults,
1120
nonmethod_func.func_closure)))
1121
# Copy annotations, if any
1122
try:
1123
new_function._dbus_annotations = (
1124
dict(attribute._dbus_annotations))
1125
except AttributeError:
1126
pass
1127
# Define a creator of a function to call both the
1128
# original and alternate functions, so both the
1129
# original and alternate signals gets sent when
1130
# the function is called
1131
def fixscope(func1, func2):
1132
"""This function is a scope container to pass
1133
func1 and func2 to the "call_both" function
1134
outside of its arguments"""
1135
def call_both(*args, **kwargs):
1136
"""This function will emit two D-Bus
1137
signals by calling func1 and func2"""
1138
func1(*args, **kwargs)
1139
func2(*args, **kwargs)
1140
return call_both
1141
# Create the "call_both" function and add it to
1142
# the class
1143
attr[attrname] = fixscope(attribute, new_function)
1144
# Is this a D-Bus method?
1145
elif getattr(attribute, "_dbus_is_method", False):
1146
# Create a new, but exactly alike, function
1147
# object. Decorate it to be a new D-Bus method
1148
# with the alternate D-Bus interface name. Add it
1149
# to the class.
1150
attr[attrname] = (dbus.service.method
1151
(alt_interface,
1152
attribute._dbus_in_signature,
1153
attribute._dbus_out_signature)
1154
(types.FunctionType
1155
(attribute.func_code,
1156
attribute.func_globals,
1157
attribute.func_name,
1158
attribute.func_defaults,
1159
attribute.func_closure)))
1160
# Copy annotations, if any
1161
try:
1162
attr[attrname]._dbus_annotations = (
1163
dict(attribute._dbus_annotations))
1164
except AttributeError:
1165
pass
1166
# Is this a D-Bus property?
1167
elif getattr(attribute, "_dbus_is_property", False):
1168
# Create a new, but exactly alike, function
1169
# object, and decorate it to be a new D-Bus
1170
# property with the alternate D-Bus interface
1171
# name. Add it to the class.
1172
attr[attrname] = (dbus_service_property
1173
(alt_interface,
1174
attribute._dbus_signature,
1175
attribute._dbus_access,
1176
attribute
1177
._dbus_get_args_options
1178
["byte_arrays"])
1179
(types.FunctionType
1180
(attribute.func_code,
1181
attribute.func_globals,
1182
attribute.func_name,
1183
attribute.func_defaults,
1184
attribute.func_closure)))
1185
# Copy annotations, if any
1186
try:
1187
attr[attrname]._dbus_annotations = (
1188
dict(attribute._dbus_annotations))
1189
except AttributeError:
1190
pass
1191
# Is this a D-Bus interface?
1192
elif getattr(attribute, "_dbus_is_interface", False):
1193
# Create a new, but exactly alike, function
1194
# object. Decorate it to be a new D-Bus interface
1195
# with the alternate D-Bus interface name. Add it
1196
# to the class.
1197
attr[attrname] = (dbus_interface_annotations
1198
(alt_interface)
1199
(types.FunctionType
1200
(attribute.func_code,
1201
attribute.func_globals,
1202
attribute.func_name,
1203
attribute.func_defaults,
1204
attribute.func_closure)))
1205
if deprecate:
1206
# Deprecate all alternate interfaces
1207
iname="_AlternateDBusNames_interface_annotation{0}"
1208
for interface_name in interface_names:
1209
@dbus_interface_annotations(interface_name)
1210
def func(self):
1211
return { "org.freedesktop.DBus.Deprecated":
1212
"true" }
1213
# Find an unused name
1214
for aname in (iname.format(i)
1215
for i in itertools.count()):
1216
if aname not in attr:
1217
attr[aname] = func
1218
break
1219
if interface_names:
1220
# Replace the class with a new subclass of it with
1221
# methods, signals, etc. as created above.
1222
cls = type(b"{0}Alternate".format(cls.__name__),
1223
(cls,), attr)
1224
return cls
1225
return wrapper
1226
1227
1228
@alternate_dbus_interfaces({"se.recompile.Mandos":
1229
"se.bsnet.fukt.Mandos"})
1230
762
class ClientDBus(Client, DBusObjectWithProperties):
1231
763
"""A Client class using D-Bus
1232
764
1241
773
# dbus.service.Object doesn't use super(), so we can't either.
1242
774
1243
775
def __init__(self, bus = None, *args, **kwargs):
776
self._approvals_pending = 0
1244
777
self.bus = bus
1245
778
Client.__init__(self, *args, **kwargs)
1246
779
# Only now, when this client is initialized, can it show up on
1252
785
("/clients/" + client_object_name))
1253
786
DBusObjectWithProperties.__init__(self, self.bus,
1254
787
self.dbus_object_path)
1255
788
1256
789
def notifychangeproperty(transform_func,
1257
790
dbus_name, type_func=lambda x: x,
1258
791
variant_level=1):
1259
""" Modify a variable so that it's a property which announces
1260
its changes to DBus.
1261
1262
transform_fun: Function that takes a value and a variant_level
1263
and transforms it to a D-Bus type.
1264
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
1265
797
type_func: Function that transform the value before sending it
1266
to the D-Bus. Default: no transform
1267
variant_level: D-Bus variant level. Default: 1
798
to DBus
799
variant_level: DBus variant level. default: 1
1268
800
"""
1269
attrname = "_{0}".format(dbus_name)
801
real_value = [None,]
1270
802
def setter(self, value):
803
old_value = real_value[0]
804
real_value[0] = value
1271
805
if hasattr(self, "dbus_object_path"):
1272
if (not hasattr(self, attrname) or
1273
type_func(getattr(self, attrname, None))
1274
!= type_func(value)):
1275
dbus_value = transform_func(type_func(value),
1276
variant_level
1277
=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)
1278
809
self.PropertyChanged(dbus.String(dbus_name),
1279
810
dbus_value)
1280
setattr(self, attrname, value)
1281
811
1282
return property(lambda self: getattr(self, attrname), setter)
812
return property(lambda self: real_value[0], setter)
813
1283
814
1284
815
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1285
816
approvals_pending = notifychangeproperty(dbus.Boolean,
1289
820
last_enabled = notifychangeproperty(datetime_to_dbus,
1290
821
"LastEnabled")
1291
822
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1292
type_func = lambda checker:
1293
checker is not None)
823
type_func = lambda checker: checker is not None)
1294
824
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1295
825
"LastCheckedOK")
1296
last_checker_status = notifychangeproperty(dbus.Int16,
1297
"LastCheckerStatus")
1298
last_approval_request = notifychangeproperty(
1299
datetime_to_dbus, "LastApprovalRequest")
826
last_approval_request = notifychangeproperty(datetime_to_dbus,
827
"LastApprovalRequest")
1300
828
approved_by_default = notifychangeproperty(dbus.Boolean,
1301
829
"ApprovedByDefault")
1302
approval_delay = notifychangeproperty(dbus.UInt64,
1303
"ApprovalDelay",
1304
type_func =
1305
timedelta_to_milliseconds)
1306
approval_duration = notifychangeproperty(
1307
dbus.UInt64, "ApprovalDuration",
1308
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)
1309
834
host = notifychangeproperty(dbus.String, "Host")
1310
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1311
type_func =
1312
timedelta_to_milliseconds)
1313
extended_timeout = notifychangeproperty(
1314
dbus.UInt64, "ExtendedTimeout",
1315
type_func = timedelta_to_milliseconds)
1316
interval = notifychangeproperty(dbus.UInt64,
1317
"Interval",
1318
type_func =
1319
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)
1320
841
checker_command = notifychangeproperty(dbus.String, "Checker")
1321
842
1322
843
del notifychangeproperty
1364
885
return r
1365
886
1366
887
def _reset_approved(self):
1367
self.approved = None
888
self._approved = None
1368
889
return False
1369
890
1370
891
def approve(self, value=True):
1371
self.approved = value
1372
gobject.timeout_add(timedelta_to_milliseconds
892
self.send_changedstate()
893
self._approved = value
894
gobject.timeout_add(_timedelta_to_milliseconds
1373
895
(self.approval_duration),
1374
896
self._reset_approved)
1375
self.send_changedstate()
897
1376
898
1377
899
## D-Bus methods, signals & properties
1378
_interface = "se.recompile.Mandos.Client"
1379
1380
## Interfaces
1381
1382
@dbus_interface_annotations(_interface)
1383
def _foo(self):
1384
return { "org.freedesktop.DBus.Property.EmitsChangedSignal":
1385
"false"}
900
_interface = "se.bsnet.fukt.Mandos.Client"
1386
901
1387
902
## Signals
1388
903
1488
1003
access="readwrite")
1489
1004
def ApprovalDuration_dbus_property(self, value=None):
1490
1005
if value is None: # get
1491
return dbus.UInt64(timedelta_to_milliseconds(
1006
return dbus.UInt64(_timedelta_to_milliseconds(
1492
1007
self.approval_duration))
1493
1008
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1494
1009
1508
1023
def Host_dbus_property(self, value=None):
1509
1024
if value is None: # get
1510
1025
return dbus.String(self.host)
1511
self.host = unicode(value)
1026
self.host = value
1512
1027
1513
1028
# Created - property
1514
1029
@dbus_service_property(_interface, signature="s", access="read")
1515
1030
def Created_dbus_property(self):
1516
return datetime_to_dbus(self.created)
1031
return dbus.String(datetime_to_dbus(self.created))
1517
1032
1518
1033
# LastEnabled - property
1519
1034
@dbus_service_property(_interface, signature="s", access="read")
1540
1055
return
1541
1056
return datetime_to_dbus(self.last_checked_ok)
1542
1057
1543
# LastCheckerStatus - property
1544
@dbus_service_property(_interface, signature="n",
1545
access="read")
1546
def LastCheckerStatus_dbus_property(self):
1547
return dbus.Int16(self.last_checker_status)
1548
1549
1058
# Expires - property
1550
1059
@dbus_service_property(_interface, signature="s", access="read")
1551
1060
def Expires_dbus_property(self):
1562
1071
def Timeout_dbus_property(self, value=None):
1563
1072
if value is None: # get
1564
1073
return dbus.UInt64(self.timeout_milliseconds())
1565
old_timeout = self.timeout
1566
1074
self.timeout = datetime.timedelta(0, 0, 0, value)
1567
# Reschedule disabling
1568
if self.enabled:
1569
now = datetime.datetime.utcnow()
1570
self.expires += self.timeout - old_timeout
1571
if self.expires <= now:
1572
# The timeout has passed
1573
self.disable()
1574
else:
1575
if (getattr(self, "disable_initiator_tag", None)
1576
is None):
1577
return
1578
gobject.source_remove(self.disable_initiator_tag)
1579
self.disable_initiator_tag = (
1580
gobject.timeout_add(
1581
timedelta_to_milliseconds(self.expires - now),
1582
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))
1583
1095
1584
1096
# ExtendedTimeout - property
1585
1097
@dbus_service_property(_interface, signature="t",
1598
1110
self.interval = datetime.timedelta(0, 0, 0, value)
1599
1111
if getattr(self, "checker_initiator_tag", None) is None:
1600
1112
return
1601
if self.enabled:
1602
# Reschedule checker run
1603
gobject.source_remove(self.checker_initiator_tag)
1604
self.checker_initiator_tag = (gobject.timeout_add
1605
(value, self.start_checker))
1606
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
1607
1118
1608
1119
# Checker - property
1609
1120
@dbus_service_property(_interface, signature="s",
1611
1122
def Checker_dbus_property(self, value=None):
1612
1123
if value is None: # get
1613
1124
return dbus.String(self.checker_command)
1614
self.checker_command = unicode(value)
1125
self.checker_command = value
1615
1126
1616
1127
# CheckerRunning - property
1617
1128
@dbus_service_property(_interface, signature="b",
1646
1157
raise KeyError()
1647
1158
1648
1159
def __getattribute__(self, name):
1649
if name == '_pipe':
1160
if(name == '_pipe'):
1650
1161
return super(ProxyClient, self).__getattribute__(name)
1651
1162
self._pipe.send(('getattr', name))
1652
1163
data = self._pipe.recv()
1659
1170
return func
1660
1171
1661
1172
def __setattr__(self, name, value):
1662
if name == '_pipe':
1173
if(name == '_pipe'):
1663
1174
return super(ProxyClient, self).__setattr__(name, value)
1664
1175
self._pipe.send(('setattr', name, value))
1665
1176
1705
1216
logger.debug("Protocol version: %r", line)
1706
1217
try:
1707
1218
if int(line.strip().split()[0]) > 1:
1708
raise RuntimeError(line)
1219
raise RuntimeError
1709
1220
except (ValueError, IndexError, RuntimeError) as error:
1710
1221
logger.error("Unknown protocol version: %s", error)
1711
1222
return
1748
1259
client.name)
1749
1260
if self.server.use_dbus:
1750
1261
# Emit D-Bus signal
1751
client.Rejected("Disabled")
1262
client.Rejected("Disabled")
1752
1263
return
1753
1264
1754
if client.approved or not client.approval_delay:
1265
if client._approved or not client.approval_delay:
1755
1266
#We are approved or approval is disabled
1756
1267
break
1757
elif client.approved is None:
1268
elif client._approved is None:
1758
1269
logger.info("Client %s needs approval",
1759
1270
client.name)
1760
1271
if self.server.use_dbus:
1771
1282
return
1772
1283
1773
1284
#wait until timeout or approved
1285
#x = float(client._timedelta_to_milliseconds(delay))
1774
1286
time = datetime.datetime.now()
1775
1287
client.changedstate.acquire()
1776
client.changedstate.wait(
1777
float(timedelta_to_milliseconds(delay)
1778
/ 1000))
1288
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
1779
1289
client.changedstate.release()
1780
1290
time2 = datetime.datetime.now()
1781
1291
if (time2 - time) >= delay:
1797
1307
try:
1798
1308
sent = session.send(client.secret[sent_size:])
1799
1309
except gnutls.errors.GNUTLSError as error:
1800
logger.warning("gnutls send failed",
1801
exc_info=error)
1310
logger.warning("gnutls send failed")
1802
1311
return
1803
1312
logger.debug("Sent: %d, remaining: %d",
1804
1313
sent, len(client.secret)
1806
1315
sent_size += sent
1807
1316
1808
1317
logger.info("Sending secret to %s", client.name)
1809
# bump the timeout using extended_timeout
1810
client.bump_timeout(client.extended_timeout)
1318
# bump the timeout as if seen
1319
client.checked_ok(client.extended_timeout)
1811
1320
if self.server.use_dbus:
1812
1321
# Emit D-Bus signal
1813
1322
client.GotSecret()
1818
1327
try:
1819
1328
session.bye()
1820
1329
except gnutls.errors.GNUTLSError as error:
1821
logger.warning("GnuTLS bye failed",
1822
exc_info=error)
1330
logger.warning("GnuTLS bye failed")
1823
1331
1824
1332
@staticmethod
1825
1333
def peer_certificate(session):
1881
1389
# Convert the buffer to a Python bytestring
1882
1390
fpr = ctypes.string_at(buf, buf_len.value)
1883
1391
# Convert the bytestring to hexadecimal notation
1884
hex_fpr = binascii.hexlify(fpr).upper()
1392
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
1885
1393
return hex_fpr
1886
1394
1887
1395
1890
1398
def sub_process_main(self, request, address):
1891
1399
try:
1892
1400
self.finish_request(request, address)
1893
except Exception:
1401
except:
1894
1402
self.handle_error(request, address)
1895
1403
self.close_request(request)
1896
1404
1897
1405
def process_request(self, request, address):
1898
1406
"""Start a new process to process the request."""
1899
proc = multiprocessing.Process(target = self.sub_process_main,
1900
args = (request, address))
1901
proc.start()
1902
return proc
1407
multiprocessing.Process(target = self.sub_process_main,
1408
args = (request, address)).start()
1903
1409
1904
1410
1905
1411
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1911
1417
"""
1912
1418
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1913
1419
1914
proc = MultiprocessingMixIn.process_request(self, request,
1915
client_address)
1420
super(MultiprocessingMixInWithPipe,
1421
self).process_request(request, client_address)
1916
1422
self.child_pipe.close()
1917
self.add_pipe(parent_pipe, proc)
1423
self.add_pipe(parent_pipe)
1918
1424
1919
def add_pipe(self, parent_pipe, proc):
1425
def add_pipe(self, parent_pipe):
1920
1426
"""Dummy function; override as necessary"""
1921
raise NotImplementedError()
1427
raise NotImplementedError
1922
1428
1923
1429
1924
1430
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1931
1437
use_ipv6: Boolean; to use IPv6 or not
1932
1438
"""
1933
1439
def __init__(self, server_address, RequestHandlerClass,
1934
interface=None, use_ipv6=True, socketfd=None):
1935
"""If socketfd is set, use that file descriptor instead of
1936
creating a new one with socket.socket().
1937
"""
1440
interface=None, use_ipv6=True):
1938
1441
self.interface = interface
1939
1442
if use_ipv6:
1940
1443
self.address_family = socket.AF_INET6
1941
if socketfd is not None:
1942
# Save the file descriptor
1943
self.socketfd = socketfd
1944
# Save the original socket.socket() function
1945
self.socket_socket = socket.socket
1946
# To implement --socket, we monkey patch socket.socket.
1947
#
1948
# (When socketserver.TCPServer is a new-style class, we
1949
# could make self.socket into a property instead of monkey
1950
# patching socket.socket.)
1951
#
1952
# Create a one-time-only replacement for socket.socket()
1953
@functools.wraps(socket.socket)
1954
def socket_wrapper(*args, **kwargs):
1955
# Restore original function so subsequent calls are
1956
# not affected.
1957
socket.socket = self.socket_socket
1958
del self.socket_socket
1959
# This time only, return a new socket object from the
1960
# saved file descriptor.
1961
return socket.fromfd(self.socketfd, *args, **kwargs)
1962
# Replace socket.socket() function with wrapper
1963
socket.socket = socket_wrapper
1964
# The socketserver.TCPServer.__init__ will call
1965
# socket.socket(), which might be our replacement,
1966
# socket_wrapper(), if socketfd was set.
1967
1444
socketserver.TCPServer.__init__(self, server_address,
1968
1445
RequestHandlerClass)
1969
1970
1446
def server_bind(self):
1971
1447
"""This overrides the normal server_bind() function
1972
1448
to bind to an interface if one was specified, and also NOT to
1980
1456
try:
1981
1457
self.socket.setsockopt(socket.SOL_SOCKET,
1982
1458
SO_BINDTODEVICE,
1983
str(self.interface + '\0'))
1459
str(self.interface
1460
+ '\0'))
1984
1461
except socket.error as error:
1985
if error.errno == errno.EPERM:
1986
logger.error("No permission to bind to"
1987
" interface %s", self.interface)
1988
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:
1989
1467
logger.error("SO_BINDTODEVICE not available;"
1990
1468
" cannot bind to interface %s",
1991
1469
self.interface)
1992
elif error.errno == errno.ENODEV:
1993
logger.error("Interface %s does not exist,"
1994
" cannot bind", self.interface)
1995
1470
else:
1996
1471
raise
1997
1472
# Only bind(2) the socket if we really need to.
2000
1475
if self.address_family == socket.AF_INET6:
2001
1476
any_address = "::" # in6addr_any
2002
1477
else:
2003
any_address = "0.0.0.0" # INADDR_ANY
1478
any_address = socket.INADDR_ANY
2004
1479
self.server_address = (any_address,
2005
1480
self.server_address[1])
2006
1481
elif not self.server_address[1]:
2027
1502
"""
2028
1503
def __init__(self, server_address, RequestHandlerClass,
2029
1504
interface=None, use_ipv6=True, clients=None,
2030
gnutls_priority=None, use_dbus=True, socketfd=None):
1505
gnutls_priority=None, use_dbus=True):
2031
1506
self.enabled = False
2032
1507
self.clients = clients
2033
1508
if self.clients is None:
2034
self.clients = {}
1509
self.clients = set()
2035
1510
self.use_dbus = use_dbus
2036
1511
self.gnutls_priority = gnutls_priority
2037
1512
IPv6_TCPServer.__init__(self, server_address,
2038
1513
RequestHandlerClass,
2039
1514
interface = interface,
2040
use_ipv6 = use_ipv6,
2041
socketfd = socketfd)
1515
use_ipv6 = use_ipv6)
2042
1516
def server_activate(self):
2043
1517
if self.enabled:
2044
1518
return socketserver.TCPServer.server_activate(self)
2045
2046
1519
def enable(self):
2047
1520
self.enabled = True
2048
2049
def add_pipe(self, parent_pipe, proc):
1521
def add_pipe(self, parent_pipe):
2050
1522
# Call "handle_ipc" for both data and EOF events
2051
1523
gobject.io_add_watch(parent_pipe.fileno(),
2052
1524
gobject.IO_IN | gobject.IO_HUP,
2053
1525
functools.partial(self.handle_ipc,
2054
parent_pipe =
2055
parent_pipe,
2056
proc = proc))
2057
1526
parent_pipe = parent_pipe))
1527
2058
1528
def handle_ipc(self, source, condition, parent_pipe=None,
2059
proc = None, client_object=None):
2060
# error, or the other end of multiprocessing.Pipe has closed
2061
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2062
# Wait for other process to exit
2063
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):
2064
1546
return False
2065
1547
2066
1548
# Read a request from the child
2071
1553
fpr = request[1]
2072
1554
address = request[2]
2073
1555
2074
for c in self.clients.itervalues():
1556
for c in self.clients:
2075
1557
if c.fingerprint == fpr:
2076
1558
client = c
2077
1559
break
2080
1562
"dress: %s", fpr, address)
2081
1563
if self.use_dbus:
2082
1564
# Emit D-Bus signal
2083
mandos_dbus_service.ClientNotFound(fpr,
2084
address[0])
1565
mandos_dbus_service.ClientNotFound(fpr, address[0])
2085
1566
parent_pipe.send(False)
2086
1567
return False
2087
1568
2088
1569
gobject.io_add_watch(parent_pipe.fileno(),
2089
1570
gobject.IO_IN | gobject.IO_HUP,
2090
1571
functools.partial(self.handle_ipc,
2091
parent_pipe =
2092
parent_pipe,
2093
proc = proc,
2094
client_object =
2095
client))
1572
parent_pipe = parent_pipe,
1573
client_object = client))
2096
1574
parent_pipe.send(True)
2097
# remove the old hook in favor of the new above hook on
2098
# same fileno
1575
# remove the old hook in favor of the new above hook on same fileno
2099
1576
return False
2100
1577
if command == 'funcall':
2101
1578
funcname = request[1]
2102
1579
args = request[2]
2103
1580
kwargs = request[3]
2104
1581
2105
parent_pipe.send(('data', getattr(client_object,
2106
funcname)(*args,
2107
**kwargs)))
1582
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
2108
1583
2109
1584
if command == 'getattr':
2110
1585
attrname = request[1]
2111
1586
if callable(client_object.__getattribute__(attrname)):
2112
1587
parent_pipe.send(('function',))
2113
1588
else:
2114
parent_pipe.send(('data', client_object
2115
.__getattribute__(attrname)))
1589
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
2116
1590
2117
1591
if command == 'setattr':
2118
1592
attrname = request[1]
2122
1596
return True
2123
1597
2124
1598
2125
def rfc3339_duration_to_delta(duration):
2126
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2127
2128
>>> rfc3339_duration_to_delta("P7D")
2129
datetime.timedelta(7)
2130
>>> rfc3339_duration_to_delta("PT60S")
2131
datetime.timedelta(0, 60)
2132
>>> rfc3339_duration_to_delta("PT60M")
2133
datetime.timedelta(0, 3600)
2134
>>> rfc3339_duration_to_delta("PT24H")
2135
datetime.timedelta(1)
2136
>>> rfc3339_duration_to_delta("P1W")
2137
datetime.timedelta(7)
2138
>>> rfc3339_duration_to_delta("PT5M30S")
2139
datetime.timedelta(0, 330)
2140
>>> rfc3339_duration_to_delta("P1DT3M20S")
2141
datetime.timedelta(1, 200)
2142
"""
2143
2144
# Parsing an RFC 3339 duration with regular expressions is not
2145
# possible - there would have to be multiple places for the same
2146
# values, like seconds. The current code, while more esoteric, is
2147
# cleaner without depending on a parsing library. If Python had a
2148
# built-in library for parsing we would use it, but we'd like to
2149
# avoid excessive use of external libraries.
2150
2151
# New type for defining tokens, syntax, and semantics all-in-one
2152
Token = collections.namedtuple("Token",
2153
("regexp", # To match token; if
2154
# "value" is not None,
2155
# must have a "group"
2156
# containing digits
2157
"value", # datetime.timedelta or
2158
# None
2159
"followers")) # Tokens valid after
2160
# this token
2161
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2162
# the "duration" ABNF definition in RFC 3339, Appendix A.
2163
token_end = Token(re.compile(r"$"), None, frozenset())
2164
token_second = Token(re.compile(r"(\d+)S"),
2165
datetime.timedelta(seconds=1),
2166
frozenset((token_end,)))
2167
token_minute = Token(re.compile(r"(\d+)M"),
2168
datetime.timedelta(minutes=1),
2169
frozenset((token_second, token_end)))
2170
token_hour = Token(re.compile(r"(\d+)H"),
2171
datetime.timedelta(hours=1),
2172
frozenset((token_minute, token_end)))
2173
token_time = Token(re.compile(r"T"),
2174
None,
2175
frozenset((token_hour, token_minute,
2176
token_second)))
2177
token_day = Token(re.compile(r"(\d+)D"),
2178
datetime.timedelta(days=1),
2179
frozenset((token_time, token_end)))
2180
token_month = Token(re.compile(r"(\d+)M"),
2181
datetime.timedelta(weeks=4),
2182
frozenset((token_day, token_end)))
2183
token_year = Token(re.compile(r"(\d+)Y"),
2184
datetime.timedelta(weeks=52),
2185
frozenset((token_month, token_end)))
2186
token_week = Token(re.compile(r"(\d+)W"),
2187
datetime.timedelta(weeks=1),
2188
frozenset((token_end,)))
2189
token_duration = Token(re.compile(r"P"), None,
2190
frozenset((token_year, token_month,
2191
token_day, token_time,
2192
token_week))),
2193
# Define starting values
2194
value = datetime.timedelta() # Value so far
2195
found_token = None
2196
followers = frozenset(token_duration,) # Following valid tokens
2197
s = duration # String left to parse
2198
# Loop until end token is found
2199
while found_token is not token_end:
2200
# Search for any currently valid tokens
2201
for token in followers:
2202
match = token.regexp.match(s)
2203
if match is not None:
2204
# Token found
2205
if token.value is not None:
2206
# Value found, parse digits
2207
factor = int(match.group(1), 10)
2208
# Add to value so far
2209
value += factor * token.value
2210
# Strip token from string
2211
s = token.regexp.sub("", s, 1)
2212
# Go to found token
2213
found_token = token
2214
# Set valid next tokens
2215
followers = found_token.followers
2216
break
2217
else:
2218
# No currently valid tokens were found
2219
raise ValueError("Invalid RFC 3339 duration")
2220
# End token found
2221
return value
2222
2223
2224
1599
def string_to_delta(interval):
2225
1600
"""Parse a string and return a datetime.timedelta
2226
1601
2237
1612
>>> string_to_delta('5m 30s')
2238
1613
datetime.timedelta(0, 330)
2239
1614
"""
2240
2241
try:
2242
return rfc3339_duration_to_delta(interval)
2243
except ValueError:
2244
pass
2245
2246
1615
timevalue = datetime.timedelta(0)
2247
1616
for s in interval.split():
2248
1617
try:
2259
1628
elif suffix == "w":
2260
1629
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2261
1630
else:
2262
raise ValueError("Unknown suffix {0!r}"
2263
.format(suffix))
2264
except IndexError as e:
1631
raise ValueError("Unknown suffix %r" % suffix)
1632
except (ValueError, IndexError) as e:
2265
1633
raise ValueError(*(e.args))
2266
1634
timevalue += delta
2267
1635
return timevalue
2268
1636
2269
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
2270
1662
def daemon(nochdir = False, noclose = False):
2271
1663
"""See daemon(3). Standard BSD Unix function.
2272
1664
2280
1672
sys.exit()
2281
1673
if not noclose:
2282
1674
# Close all standard open file descriptors
2283
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1675
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2284
1676
if not stat.S_ISCHR(os.fstat(null).st_mode):
2285
1677
raise OSError(errno.ENODEV,
2286
"{0} not a character device"
2287
.format(os.devnull))
1678
"%s not a character device"
1679
% os.path.devnull)
2288
1680
os.dup2(null, sys.stdin.fileno())
2289
1681
os.dup2(null, sys.stdout.fileno())
2290
1682
os.dup2(null, sys.stderr.fileno())
2299
1691
2300
1692
parser = argparse.ArgumentParser()
2301
1693
parser.add_argument("-v", "--version", action="version",
2302
version = "%(prog)s {0}".format(version),
1694
version = "%%(prog)s %s" % version,
2303
1695
help="show version number and exit")
2304
1696
parser.add_argument("-i", "--interface", metavar="IF",
2305
1697
help="Bind to interface IF")
2311
1703
help="Run self-test")
2312
1704
parser.add_argument("--debug", action="store_true",
2313
1705
help="Debug mode; run in foreground and log"
2314
" to terminal", default=None)
1706
" to terminal")
2315
1707
parser.add_argument("--debuglevel", metavar="LEVEL",
2316
1708
help="Debug level for stdout output")
2317
1709
parser.add_argument("--priority", help="GnuTLS"
2324
1716
" files")
2325
1717
parser.add_argument("--no-dbus", action="store_false",
2326
1718
dest="use_dbus", help="Do not provide D-Bus"
2327
" system bus interface", default=None)
1719
" system bus interface")
2328
1720
parser.add_argument("--no-ipv6", action="store_false",
2329
dest="use_ipv6", help="Do not use IPv6",
2330
default=None)
2331
parser.add_argument("--no-restore", action="store_false",
2332
dest="restore", help="Do not restore stored"
2333
" state", default=None)
2334
parser.add_argument("--socket", type=int,
2335
help="Specify a file descriptor to a network"
2336
" socket to use instead of creating one")
2337
parser.add_argument("--statedir", metavar="DIR",
2338
help="Directory to save/restore state in")
2339
parser.add_argument("--foreground", action="store_true",
2340
help="Run in foreground", default=None)
2341
1721
dest="use_ipv6", help="Do not use IPv6")
2342
1722
options = parser.parse_args()
2343
1723
2344
1724
if options.check:
2352
1732
"port": "",
2353
1733
"debug": "False",
2354
1734
"priority":
2355
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:+SIGN-RSA-SHA224:+SIGN-RSA-RMD160",
1735
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2356
1736
"servicename": "Mandos",
2357
1737
"use_dbus": "True",
2358
1738
"use_ipv6": "True",
2359
1739
"debuglevel": "",
2360
"restore": "True",
2361
"socket": "",
2362
"statedir": "/var/lib/mandos",
2363
"foreground": "False",
2364
1740
}
2365
1741
2366
1742
# Parse config file for server-global settings
2371
1747
# Convert the SafeConfigParser object to a dict
2372
1748
server_settings = server_config.defaults()
2373
1749
# Use the appropriate methods on the non-string config options
2374
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
1750
for option in ("debug", "use_dbus", "use_ipv6"):
2375
1751
server_settings[option] = server_config.getboolean("DEFAULT",
2376
1752
option)
2377
1753
if server_settings["port"]:
2378
1754
server_settings["port"] = server_config.getint("DEFAULT",
2379
1755
"port")
2380
if server_settings["socket"]:
2381
server_settings["socket"] = server_config.getint("DEFAULT",
2382
"socket")
2383
# Later, stdin will, and stdout and stderr might, be dup'ed
2384
# over with an opened os.devnull. But we don't want this to
2385
# happen with a supplied network socket.
2386
if 0 <= server_settings["socket"] <= 2:
2387
server_settings["socket"] = os.dup(server_settings
2388
["socket"])
2389
1756
del server_config
2390
1757
2391
1758
# Override the settings from the config file with command line
2392
1759
# options, if set.
2393
1760
for option in ("interface", "address", "port", "debug",
2394
1761
"priority", "servicename", "configdir",
2395
"use_dbus", "use_ipv6", "debuglevel", "restore",
2396
"statedir", "socket", "foreground"):
1762
"use_dbus", "use_ipv6", "debuglevel"):
2397
1763
value = getattr(options, option)
2398
1764
if value is not None:
2399
1765
server_settings[option] = value
2402
1768
for option in server_settings.keys():
2403
1769
if type(server_settings[option]) is str:
2404
1770
server_settings[option] = unicode(server_settings[option])
2405
# Force all boolean options to be boolean
2406
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2407
"foreground"):
2408
server_settings[option] = bool(server_settings[option])
2409
# Debug implies foreground
2410
if server_settings["debug"]:
2411
server_settings["foreground"] = True
2412
1771
# Now we have our good server settings in "server_settings"
2413
1772
2414
1773
##################################################################
2418
1777
debuglevel = server_settings["debuglevel"]
2419
1778
use_dbus = server_settings["use_dbus"]
2420
1779
use_ipv6 = server_settings["use_ipv6"]
2421
stored_state_path = os.path.join(server_settings["statedir"],
2422
stored_state_file)
2423
foreground = server_settings["foreground"]
2424
2425
if debug:
2426
initlogger(debug, logging.DEBUG)
2427
else:
2428
if not debuglevel:
2429
initlogger(debug)
2430
else:
2431
level = getattr(logging, debuglevel.upper())
2432
initlogger(debug, level)
2433
1780
2434
1781
if server_settings["servicename"] != "Mandos":
2435
1782
syslogger.setFormatter(logging.Formatter
2436
('Mandos ({0}) [%(process)d]:'
2437
' %(levelname)s: %(message)s'
2438
.format(server_settings
2439
["servicename"])))
1783
('Mandos (%s) [%%(process)d]:'
1784
' %%(levelname)s: %%(message)s'
1785
% server_settings["servicename"]))
2440
1786
2441
1787
# Parse config file with clients
2442
client_config = configparser.SafeConfigParser(Client
2443
.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)
2444
1797
client_config.read(os.path.join(server_settings["configdir"],
2445
1798
"clients.conf"))
2446
1799
2455
1808
use_ipv6=use_ipv6,
2456
1809
gnutls_priority=
2457
1810
server_settings["priority"],
2458
use_dbus=use_dbus,
2459
socketfd=(server_settings["socket"]
2460
or None))
2461
if not foreground:
2462
pidfilename = "/run/mandos.pid"
2463
if not os.path.isdir("/run/."):
2464
pidfilename = "/var/run/mandos.pid"
2465
pidfile = None
1811
use_dbus=use_dbus)
1812
if not debug:
1813
pidfilename = "/var/run/mandos.pid"
2466
1814
try:
2467
1815
pidfile = open(pidfilename, "w")
2468
except IOError as e:
2469
logger.error("Could not open file %r", pidfilename,
2470
exc_info=e)
1816
except IOError:
1817
logger.error("Could not open file %r", pidfilename)
2471
1818
2472
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:
2473
1823
try:
2474
uid = pwd.getpwnam(name).pw_uid
2475
gid = pwd.getpwnam(name).pw_gid
2476
break
1824
uid = pwd.getpwnam("mandos").pw_uid
1825
gid = pwd.getpwnam("mandos").pw_gid
2477
1826
except KeyError:
2478
continue
2479
else:
2480
uid = 65534
2481
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
2482
1833
try:
2483
1834
os.setgid(gid)
2484
1835
os.setuid(uid)
2485
1836
except OSError as error:
2486
if error.errno != errno.EPERM:
2487
raise
1837
if error[0] != errno.EPERM:
1838
raise error
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)
2488
1847
2489
1848
if debug:
2490
1849
# Enable all possible GnuTLS debugging
2501
1860
.gnutls_global_set_log_function(debug_gnutls))
2502
1861
2503
1862
# Redirect stdin so all checkers get /dev/null
2504
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1863
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2505
1864
os.dup2(null, sys.stdin.fileno())
2506
1865
if null > 2:
2507
1866
os.close(null)
1867
else:
1868
# No console logging
1869
logger.removeHandler(console)
2508
1870
2509
1871
# Need to fork before connecting to D-Bus
2510
if not foreground:
1872
if not debug:
2511
1873
# Close all input and output, do double fork, etc.
2512
1874
daemon()
2513
1875
2514
# multiprocessing will use threads, so before we use gobject we
2515
# need to inform gobject that threads will be used.
2516
gobject.threads_init()
2517
2518
1876
global main_loop
2519
1877
# From the Avahi example code
2520
DBusGMainLoop(set_as_default=True)
1878
DBusGMainLoop(set_as_default=True )
2521
1879
main_loop = gobject.MainLoop()
2522
1880
bus = dbus.SystemBus()
2523
1881
# End of Avahi example code
2524
1882
if use_dbus:
2525
1883
try:
2526
bus_name = dbus.service.BusName("se.recompile.Mandos",
1884
bus_name = dbus.service.BusName("se.bsnet.fukt.Mandos",
2527
1885
bus, do_not_queue=True)
2528
old_bus_name = (dbus.service.BusName
2529
("se.bsnet.fukt.Mandos", bus,
2530
do_not_queue=True))
2531
1886
except dbus.exceptions.NameExistsException as e:
2532
logger.error("Disabling D-Bus:", exc_info=e)
1887
logger.error(unicode(e) + ", disabling D-Bus")
2533
1888
use_dbus = False
2534
1889
server_settings["use_dbus"] = False
2535
1890
tcp_server.use_dbus = False
2536
1891
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2537
service = AvahiServiceToSyslog(name =
2538
server_settings["servicename"],
2539
servicetype = "_mandos._tcp",
2540
protocol = protocol, bus = bus)
1892
service = AvahiService(name = server_settings["servicename"],
1893
servicetype = "_mandos._tcp",
1894
protocol = protocol, bus = bus)
2541
1895
if server_settings["interface"]:
2542
1896
service.interface = (if_nametoindex
2543
1897
(str(server_settings["interface"])))
2548
1902
client_class = Client
2549
1903
if use_dbus:
2550
1904
client_class = functools.partial(ClientDBus, bus = bus)
2551
2552
client_settings = Client.config_parser(client_config)
2553
old_client_settings = {}
2554
clients_data = {}
2555
2556
# This is used to redirect stdout and stderr for checker processes
2557
global wnull
2558
wnull = open(os.devnull, "w") # A writable /dev/null
2559
# Only used if server is running in foreground but not in debug
2560
# mode
2561
if debug or not foreground:
2562
wnull.close()
2563
2564
# Get client data and settings from last running state.
2565
if server_settings["restore"]:
2566
try:
2567
with open(stored_state_path, "rb") as stored_state:
2568
clients_data, old_client_settings = (pickle.load
2569
(stored_state))
2570
os.remove(stored_state_path)
2571
except IOError as e:
2572
if e.errno == errno.ENOENT:
2573
logger.warning("Could not load persistent state: {0}"
2574
.format(os.strerror(e.errno)))
2575
else:
2576
logger.critical("Could not load persistent state:",
2577
exc_info=e)
2578
raise
2579
except EOFError as e:
2580
logger.warning("Could not load persistent state: "
2581
"EOFError:", exc_info=e)
2582
2583
with PGPEngine() as pgp:
2584
for client_name, client in clients_data.iteritems():
2585
# Skip removed clients
2586
if client_name not in client_settings:
2587
continue
2588
2589
# Decide which value to use after restoring saved state.
2590
# We have three different values: Old config file,
2591
# new config file, and saved state.
2592
# New config value takes precedence if it differs from old
2593
# config value, otherwise use saved state.
2594
for name, value in client_settings[client_name].items():
2595
try:
2596
# For each value in new config, check if it
2597
# differs from the old config value (Except for
2598
# the "secret" attribute)
2599
if (name != "secret" and
2600
value != old_client_settings[client_name]
2601
[name]):
2602
client[name] = value
2603
except KeyError:
2604
pass
2605
2606
# Clients who has passed its expire date can still be
2607
# enabled if its last checker was successful. Clients
2608
# whose checker succeeded before we stored its state is
2609
# assumed to have successfully run all checkers during
2610
# downtime.
2611
if client["enabled"]:
2612
if datetime.datetime.utcnow() >= client["expires"]:
2613
if not client["last_checked_ok"]:
2614
logger.warning(
2615
"disabling client {0} - Client never "
2616
"performed a successful checker"
2617
.format(client_name))
2618
client["enabled"] = False
2619
elif client["last_checker_status"] != 0:
2620
logger.warning(
2621
"disabling client {0} - Client "
2622
"last checker failed with error code {1}"
2623
.format(client_name,
2624
client["last_checker_status"]))
2625
client["enabled"] = False
2626
else:
2627
client["expires"] = (datetime.datetime
2628
.utcnow()
2629
+ client["timeout"])
2630
logger.debug("Last checker succeeded,"
2631
" keeping {0} enabled"
2632
.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):
2633
1912
try:
2634
client["secret"] = (
2635
pgp.decrypt(client["encrypted_secret"],
2636
client_settings[client_name]
2637
["secret"]))
2638
except PGPError:
2639
# If decryption fails, we use secret from new settings
2640
logger.debug("Failed to decrypt {0} old secret"
2641
.format(client_name))
2642
client["secret"] = (
2643
client_settings[client_name]["secret"])
2644
2645
# Add/remove clients based on new changes made to config
2646
for client_name in (set(old_client_settings)
2647
- set(client_settings)):
2648
del clients_data[client_name]
2649
for client_name in (set(client_settings)
2650
- set(old_client_settings)):
2651
clients_data[client_name] = client_settings[client_name]
2652
2653
# Create all client objects
2654
for client_name, client in clients_data.iteritems():
2655
tcp_server.clients[client_name] = client_class(
2656
name = client_name, settings = client,
2657
server_settings = server_settings)
2658
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()))
2659
1922
if not tcp_server.clients:
2660
1923
logger.warning("No clients defined")
2661
2662
if not foreground:
2663
if pidfile is not None:
2664
try:
2665
with pidfile:
2666
pid = os.getpid()
2667
pidfile.write(str(pid) + "\n".encode("utf-8"))
2668
except IOError:
2669
logger.error("Could not write to file %r with PID %d",
2670
pidfilename, pid)
2671
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
2672
1937
del pidfilename
1938
1939
signal.signal(signal.SIGINT, signal.SIG_IGN)
2673
1940
2674
1941
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2675
1942
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2676
1943
2677
1944
if use_dbus:
2678
@alternate_dbus_interfaces({"se.recompile.Mandos":
2679
"se.bsnet.fukt.Mandos"})
2680
class MandosDBusService(DBusObjectWithProperties):
1945
class MandosDBusService(dbus.service.Object):
2681
1946
"""A D-Bus proxy object"""
2682
1947
def __init__(self):
2683
1948
dbus.service.Object.__init__(self, bus, "/")
2684
_interface = "se.recompile.Mandos"
2685
2686
@dbus_interface_annotations(_interface)
2687
def _foo(self):
2688
return { "org.freedesktop.DBus.Property"
2689
".EmitsChangedSignal":
2690
"false"}
1949
_interface = "se.bsnet.fukt.Mandos"
2691
1950
2692
1951
@dbus.service.signal(_interface, signature="o")
2693
1952
def ClientAdded(self, objpath):
2708
1967
def GetAllClients(self):
2709
1968
"D-Bus method"
2710
1969
return dbus.Array(c.dbus_object_path
2711
for c in
2712
tcp_server.clients.itervalues())
1970
for c in tcp_server.clients)
2713
1971
2714
1972
@dbus.service.method(_interface,
2715
1973
out_signature="a{oa{sv}}")
2717
1975
"D-Bus method"
2718
1976
return dbus.Dictionary(
2719
1977
((c.dbus_object_path, c.GetAll(""))
2720
for c in tcp_server.clients.itervalues()),
1978
for c in tcp_server.clients),
2721
1979
signature="oa{sv}")
2722
1980
2723
1981
@dbus.service.method(_interface, in_signature="o")
2724
1982
def RemoveClient(self, object_path):
2725
1983
"D-Bus method"
2726
for c in tcp_server.clients.itervalues():
1984
for c in tcp_server.clients:
2727
1985
if c.dbus_object_path == object_path:
2728
del tcp_server.clients[c.name]
1986
tcp_server.clients.remove(c)
2729
1987
c.remove_from_connection()
2730
1988
# Don't signal anything except ClientRemoved
2731
1989
c.disable(quiet=True)
2742
2000
"Cleanup function; run on exit"
2743
2001
service.cleanup()
2744
2002
2745
multiprocessing.active_children()
2746
wnull.close()
2747
if not (tcp_server.clients or client_settings):
2748
return
2749
2750
# Store client before exiting. Secrets are encrypted with key
2751
# based on what config file has. If config file is
2752
# removed/edited, old secret will thus be unrecovable.
2753
clients = {}
2754
with PGPEngine() as pgp:
2755
for client in tcp_server.clients.itervalues():
2756
key = client_settings[client.name]["secret"]
2757
client.encrypted_secret = pgp.encrypt(client.secret,
2758
key)
2759
client_dict = {}
2760
2761
# A list of attributes that can not be pickled
2762
# + secret.
2763
exclude = set(("bus", "changedstate", "secret",
2764
"checker", "server_settings"))
2765
for name, typ in (inspect.getmembers
2766
(dbus.service.Object)):
2767
exclude.add(name)
2768
2769
client_dict["encrypted_secret"] = (client
2770
.encrypted_secret)
2771
for attr in client.client_structure:
2772
if attr not in exclude:
2773
client_dict[attr] = getattr(client, attr)
2774
2775
clients[client.name] = client_dict
2776
del client_settings[client.name]["secret"]
2777
2778
try:
2779
with (tempfile.NamedTemporaryFile
2780
(mode='wb', suffix=".pickle", prefix='clients-',
2781
dir=os.path.dirname(stored_state_path),
2782
delete=False)) as stored_state:
2783
pickle.dump((clients, client_settings), stored_state)
2784
tempname=stored_state.name
2785
os.rename(tempname, stored_state_path)
2786
except (IOError, OSError) as e:
2787
if not debug:
2788
try:
2789
os.remove(tempname)
2790
except NameError:
2791
pass
2792
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
2793
logger.warning("Could not save persistent state: {0}"
2794
.format(os.strerror(e.errno)))
2795
else:
2796
logger.warning("Could not save persistent state:",
2797
exc_info=e)
2798
raise
2799
2800
# Delete all clients, and settings from config
2801
2003
while tcp_server.clients:
2802
name, client = tcp_server.clients.popitem()
2004
client = tcp_server.clients.pop()
2803
2005
if use_dbus:
2804
2006
client.remove_from_connection()
2007
client.disable_hook = None
2805
2008
# Don't signal anything except ClientRemoved
2806
2009
client.disable(quiet=True)
2807
2010
if use_dbus:
2808
2011
# Emit D-Bus signal
2809
mandos_dbus_service.ClientRemoved(client
2810
.dbus_object_path,
2012
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
2811
2013
client.name)
2812
client_settings.clear()
2813
2014
2814
2015
atexit.register(cleanup)
2815
2016
2816
for client in tcp_server.clients.itervalues():
2017
for client in tcp_server.clients:
2817
2018
if use_dbus:
2818
2019
# Emit D-Bus signal
2819
2020
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2820
# Need to initiate checking of clients
2821
if client.enabled:
2822
client.init_checker()
2021
client.enable()
2823
2022
2824
2023
tcp_server.enable()
2825
2024
tcp_server.server_activate()
2828
2027
service.port = tcp_server.socket.getsockname()[1]
2829
2028
if use_ipv6:
2830
2029
logger.info("Now listening on address %r, port %d,"
2831
" flowinfo %d, scope_id %d",
2832
*tcp_server.socket.getsockname())
2030
" flowinfo %d, scope_id %d"
2031
% tcp_server.socket.getsockname())
2833
2032
else: # IPv4
2834
logger.info("Now listening on address %r, port %d",
2835
*tcp_server.socket.getsockname())
2033
logger.info("Now listening on address %r, port %d"
2034
% tcp_server.socket.getsockname())
2836
2035
2837
2036
#service.interface = tcp_server.socket.getsockname()[3]
2838
2037
2841
2040
try:
2842
2041
service.activate()
2843
2042
except dbus.exceptions.DBusException as error:
2844
logger.critical("D-Bus Exception", exc_info=error)
2043
logger.critical("DBusException: %s", error)
2845
2044
cleanup()
2846
2045
sys.exit(1)
2847
2046
# End of Avahi example code
2854
2053
logger.debug("Starting main loop")
2855
2054
main_loop.run()
2856
2055
except AvahiError as error:
2857
logger.critical("Avahi Error", exc_info=error)
2056
logger.critical("AvahiError: %s", error)
2858
2057
cleanup()
2859
2058
sys.exit(1)
2860
2059
except KeyboardInterrupt:
2865
2064
# Must run before the D-Bus bus name gets deregistered
2866
2065
cleanup()
2867
2066
2067
2868
2068
if __name__ == '__main__':
2869
2069
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0