To get this branch, use:
bzr branch
http://bzr.recompile.se/loggerhead/mandos/trunk
« back to all changes in this revision
Viewing changes to mandos
- browse files at revision 237.4.35
- compare with another revision
- download diff
- download tarball
- view history from revision 237.4.35
- Committer: Teddy Hogeborn
- Date: 2013-10-13 17:05:59 UTC
- mto: This revision was merged to the branch mainline in revision 625.
- Revision ID: teddy@recompile.se-20131013170559-44x665vs0pl3n8sf
Tags: version-1.6.1-1
* Makefile (version): Changed to "1.6.1".
* NEWS (Version 1.6.1): New entry.
* debian/changelog (1.6.1-1): - '' -
* NEWS (Version 1.6.1): New entry.
* debian/changelog (1.6.1-1): - '' -
- files added:
- 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 © 2008-2010 Teddy Hogeborn
15
# Copyright © 2008-2010 Björn Påhlsson
14
# Copyright © 2008-2012 Teddy Hogeborn
15
# Copyright © 2008-2012 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@fukt.bsnet.se>.
31
# Contact the authors at <mandos@recompile.se>.
32
32
#
33
33
34
from __future__ import division, with_statement, absolute_import
34
from __future__ import (division, absolute_import, print_function,
35
unicode_literals)
36
37
from future_builtins import *
35
38
36
39
import SocketServer as socketserver
37
40
import socket
38
import optparse
41
import argparse
39
42
import datetime
40
43
import errno
41
44
import gnutls.crypto
61
64
import functools
62
65
import cPickle as pickle
63
66
import multiprocessing
67
import types
68
import binascii
69
import tempfile
70
import itertools
71
import collections
64
72
65
73
import dbus
66
74
import dbus.service
80
88
except ImportError:
81
89
SO_BINDTODEVICE = None
82
90
83
84
version = "1.2.1"
85
86
#logger = logging.getLogger(u'mandos')
87
logger = logging.Logger(u'mandos')
91
version = "1.6.1"
92
stored_state_file = "clients.pickle"
93
94
logger = logging.getLogger()
88
95
syslogger = (logging.handlers.SysLogHandler
89
96
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
90
address = "/dev/log"))
91
syslogger.setFormatter(logging.Formatter
92
(u'Mandos [%(process)d]: %(levelname)s:'
93
u' %(message)s'))
94
logger.addHandler(syslogger)
95
96
console = logging.StreamHandler()
97
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
98
u' %(levelname)s:'
99
u' %(message)s'))
100
logger.addHandler(console)
97
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
return b"mandos" + binascii.hexlify(password)
176
177
def encrypt(self, data, password):
178
passphrase = self.password_encode(password)
179
with tempfile.NamedTemporaryFile(dir=self.tempdir
180
) as passfile:
181
passfile.write(passphrase)
182
passfile.flush()
183
proc = subprocess.Popen(['gpg', '--symmetric',
184
'--passphrase-file',
185
passfile.name]
186
+ self.gnupgargs,
187
stdin = subprocess.PIPE,
188
stdout = subprocess.PIPE,
189
stderr = subprocess.PIPE)
190
ciphertext, err = proc.communicate(input = data)
191
if proc.returncode != 0:
192
raise PGPError(err)
193
return ciphertext
194
195
def decrypt(self, data, password):
196
passphrase = self.password_encode(password)
197
with tempfile.NamedTemporaryFile(dir = self.tempdir
198
) as passfile:
199
passfile.write(passphrase)
200
passfile.flush()
201
proc = subprocess.Popen(['gpg', '--decrypt',
202
'--passphrase-file',
203
passfile.name]
204
+ self.gnupgargs,
205
stdin = subprocess.PIPE,
206
stdout = subprocess.PIPE,
207
stderr = subprocess.PIPE)
208
decrypted_plaintext, err = proc.communicate(input
209
= data)
210
if proc.returncode != 0:
211
raise PGPError(err)
212
return decrypted_plaintext
213
101
214
102
215
class AvahiError(Exception):
103
216
def __init__(self, value, *args, **kwargs):
119
232
Attributes:
120
233
interface: integer; avahi.IF_UNSPEC or an interface index.
121
234
Used to optionally bind to the specified interface.
122
name: string; Example: u'Mandos'
123
type: string; Example: u'_mandos._tcp'.
124
See <http://www.dns-sd.org/ServiceTypes.html>
235
name: string; Example: 'Mandos'
236
type: string; Example: '_mandos._tcp'.
237
See <https://www.iana.org/assignments/service-names-port-numbers>
125
238
port: integer; what port to announce
126
239
TXT: list of strings; TXT record for the service
127
240
domain: string; Domain to publish on, default to .local if empty.
133
246
server: D-Bus Server
134
247
bus: dbus.SystemBus()
135
248
"""
249
136
250
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
137
251
servicetype = None, port = None, TXT = None,
138
domain = u"", host = u"", max_renames = 32768,
252
domain = "", host = "", max_renames = 32768,
139
253
protocol = avahi.PROTO_UNSPEC, bus = None):
140
254
self.interface = interface
141
255
self.name = name
150
264
self.group = None # our entry group
151
265
self.server = None
152
266
self.bus = bus
267
self.entry_group_state_changed_match = None
268
153
269
def rename(self):
154
270
"""Derived from the Avahi example code"""
155
271
if self.rename_count >= self.max_renames:
156
logger.critical(u"No suitable Zeroconf service name found"
157
u" after %i retries, exiting.",
272
logger.critical("No suitable Zeroconf service name found"
273
" after %i retries, exiting.",
158
274
self.rename_count)
159
raise AvahiServiceError(u"Too many renames")
160
self.name = unicode(self.server.GetAlternativeServiceName(self.name))
161
logger.info(u"Changing Zeroconf service name to %r ...",
275
raise AvahiServiceError("Too many renames")
276
self.name = unicode(self.server
277
.GetAlternativeServiceName(self.name))
278
logger.info("Changing Zeroconf service name to %r ...",
162
279
self.name)
163
syslogger.setFormatter(logging.Formatter
164
(u'Mandos (%s) [%%(process)d]:'
165
u' %%(levelname)s: %%(message)s'
166
% self.name))
167
280
self.remove()
168
281
try:
169
282
self.add()
170
except dbus.exceptions.DBusException, error:
171
logger.critical(u"DBusException: %s", error)
283
except dbus.exceptions.DBusException as error:
284
logger.critical("D-Bus Exception", exc_info=error)
172
285
self.cleanup()
173
286
os._exit(1)
174
287
self.rename_count += 1
288
175
289
def remove(self):
176
290
"""Derived from the Avahi example code"""
291
if self.entry_group_state_changed_match is not None:
292
self.entry_group_state_changed_match.remove()
293
self.entry_group_state_changed_match = None
177
294
if self.group is not None:
178
295
self.group.Reset()
296
179
297
def add(self):
180
298
"""Derived from the Avahi example code"""
299
self.remove()
181
300
if self.group is None:
182
301
self.group = dbus.Interface(
183
302
self.bus.get_object(avahi.DBUS_NAME,
184
303
self.server.EntryGroupNew()),
185
304
avahi.DBUS_INTERFACE_ENTRY_GROUP)
186
self.group.connect_to_signal('StateChanged',
187
self
188
.entry_group_state_changed)
189
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
305
self.entry_group_state_changed_match = (
306
self.group.connect_to_signal(
307
'StateChanged', self.entry_group_state_changed))
308
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
190
309
self.name, self.type)
191
310
self.group.AddService(
192
311
self.interface,
197
316
dbus.UInt16(self.port),
198
317
avahi.string_array_to_txt_array(self.TXT))
199
318
self.group.Commit()
319
200
320
def entry_group_state_changed(self, state, error):
201
321
"""Derived from the Avahi example code"""
202
logger.debug(u"Avahi entry group state change: %i", state)
322
logger.debug("Avahi entry group state change: %i", state)
203
323
204
324
if state == avahi.ENTRY_GROUP_ESTABLISHED:
205
logger.debug(u"Zeroconf service established.")
325
logger.debug("Zeroconf service established.")
206
326
elif state == avahi.ENTRY_GROUP_COLLISION:
207
logger.warning(u"Zeroconf service name collision.")
327
logger.info("Zeroconf service name collision.")
208
328
self.rename()
209
329
elif state == avahi.ENTRY_GROUP_FAILURE:
210
logger.critical(u"Avahi: Error in group state changed %s",
330
logger.critical("Avahi: Error in group state changed %s",
211
331
unicode(error))
212
raise AvahiGroupError(u"State changed: %s"
213
% unicode(error))
332
raise AvahiGroupError("State changed: {0!s}"
333
.format(error))
334
214
335
def cleanup(self):
215
336
"""Derived from the Avahi example code"""
216
337
if self.group is not None:
217
self.group.Free()
338
try:
339
self.group.Free()
340
except (dbus.exceptions.UnknownMethodException,
341
dbus.exceptions.DBusException):
342
pass
218
343
self.group = None
219
def server_state_changed(self, state):
344
self.remove()
345
346
def server_state_changed(self, state, error=None):
220
347
"""Derived from the Avahi example code"""
221
logger.debug(u"Avahi server state change: %i", state)
222
if state == avahi.SERVER_COLLISION:
223
logger.error(u"Zeroconf server name collision")
224
self.remove()
348
logger.debug("Avahi server state change: %i", state)
349
bad_states = { avahi.SERVER_INVALID:
350
"Zeroconf server invalid",
351
avahi.SERVER_REGISTERING: None,
352
avahi.SERVER_COLLISION:
353
"Zeroconf server name collision",
354
avahi.SERVER_FAILURE:
355
"Zeroconf server failure" }
356
if state in bad_states:
357
if bad_states[state] is not None:
358
if error is None:
359
logger.error(bad_states[state])
360
else:
361
logger.error(bad_states[state] + ": %r", error)
362
self.cleanup()
225
363
elif state == avahi.SERVER_RUNNING:
226
364
self.add()
365
else:
366
if error is None:
367
logger.debug("Unknown state: %r", state)
368
else:
369
logger.debug("Unknown state: %r: %r", state, error)
370
227
371
def activate(self):
228
372
"""Derived from the Avahi example code"""
229
373
if self.server is None:
230
374
self.server = dbus.Interface(
231
375
self.bus.get_object(avahi.DBUS_NAME,
232
avahi.DBUS_PATH_SERVER),
376
avahi.DBUS_PATH_SERVER,
377
follow_name_owner_changes=True),
233
378
avahi.DBUS_INTERFACE_SERVER)
234
self.server.connect_to_signal(u"StateChanged",
379
self.server.connect_to_signal("StateChanged",
235
380
self.server_state_changed)
236
381
self.server_state_changed(self.server.GetState())
237
382
238
383
384
class AvahiServiceToSyslog(AvahiService):
385
def rename(self):
386
"""Add the new name to the syslog messages"""
387
ret = AvahiService.rename(self)
388
syslogger.setFormatter(logging.Formatter
389
('Mandos ({0}) [%(process)d]:'
390
' %(levelname)s: %(message)s'
391
.format(self.name)))
392
return ret
393
394
395
def timedelta_to_milliseconds(td):
396
"Convert a datetime.timedelta() to milliseconds"
397
return ((td.days * 24 * 60 * 60 * 1000)
398
+ (td.seconds * 1000)
399
+ (td.microseconds // 1000))
400
401
239
402
class Client(object):
240
403
"""A representation of a client host served by this server.
241
404
242
405
Attributes:
243
_approved: bool(); 'None' if not yet approved/disapproved
406
approved: bool(); 'None' if not yet approved/disapproved
244
407
approval_delay: datetime.timedelta(); Time to wait for approval
245
408
approval_duration: datetime.timedelta(); Duration of one approval
246
409
checker: subprocess.Popen(); a running checker process used
253
416
instance %(name)s can be used in the command.
254
417
checker_initiator_tag: a gobject event source tag, or None
255
418
created: datetime.datetime(); (UTC) object creation
419
client_structure: Object describing what attributes a client has
420
and is used for storing the client at exit
256
421
current_checker_command: string; current running checker_command
257
disable_hook: If set, called by disable() as disable_hook(self)
258
422
disable_initiator_tag: a gobject event source tag, or None
259
423
enabled: bool()
260
424
fingerprint: string (40 or 32 hexadecimal digits); used to
263
427
interval: datetime.timedelta(); How often to start a new checker
264
428
last_approval_request: datetime.datetime(); (UTC) or None
265
429
last_checked_ok: datetime.datetime(); (UTC) or None
266
last_enabled: datetime.datetime(); (UTC)
430
last_checker_status: integer between 0 and 255 reflecting exit
431
status of last checker. -1 reflects crashed
432
checker, -2 means no checker completed yet.
433
last_enabled: datetime.datetime(); (UTC) or None
267
434
name: string; from the config file, used in log messages and
268
435
D-Bus identifiers
269
436
secret: bytestring; sent verbatim (over TLS) to client
270
437
timeout: datetime.timedelta(); How long from last_checked_ok
271
438
until this client is disabled
439
extended_timeout: extra long timeout when secret has been sent
272
440
runtime_expansions: Allowed attributes for runtime expansion.
441
expires: datetime.datetime(); time (UTC) when a client will be
442
disabled, or None
443
server_settings: The server_settings dict from main()
273
444
"""
274
445
275
runtime_expansions = (u"approval_delay", u"approval_duration",
276
u"created", u"enabled", u"fingerprint",
277
u"host", u"interval", u"last_checked_ok",
278
u"last_enabled", u"name", u"timeout")
279
280
@staticmethod
281
def _timedelta_to_milliseconds(td):
282
"Convert a datetime.timedelta() to milliseconds"
283
return ((td.days * 24 * 60 * 60 * 1000)
284
+ (td.seconds * 1000)
285
+ (td.microseconds // 1000))
446
runtime_expansions = ("approval_delay", "approval_duration",
447
"created", "enabled", "expires",
448
"fingerprint", "host", "interval",
449
"last_approval_request", "last_checked_ok",
450
"last_enabled", "name", "timeout")
451
client_defaults = { "timeout": "PT5M",
452
"extended_timeout": "PT15M",
453
"interval": "PT2M",
454
"checker": "fping -q -- %%(host)s",
455
"host": "",
456
"approval_delay": "PT0S",
457
"approval_duration": "PT1S",
458
"approved_by_default": "True",
459
"enabled": "True",
460
}
286
461
287
462
def timeout_milliseconds(self):
288
463
"Return the 'timeout' attribute in milliseconds"
289
return self._timedelta_to_milliseconds(self.timeout)
464
return timedelta_to_milliseconds(self.timeout)
465
466
def extended_timeout_milliseconds(self):
467
"Return the 'extended_timeout' attribute in milliseconds"
468
return timedelta_to_milliseconds(self.extended_timeout)
290
469
291
470
def interval_milliseconds(self):
292
471
"Return the 'interval' attribute in milliseconds"
293
return self._timedelta_to_milliseconds(self.interval)
294
472
return timedelta_to_milliseconds(self.interval)
473
295
474
def approval_delay_milliseconds(self):
296
return self._timedelta_to_milliseconds(self.approval_delay)
297
298
def __init__(self, name = None, disable_hook=None, config=None):
299
"""Note: the 'checker' key in 'config' sets the
300
'checker_command' attribute and *not* the 'checker'
301
attribute."""
475
return timedelta_to_milliseconds(self.approval_delay)
476
477
@staticmethod
478
def config_parser(config):
479
"""Construct a new dict of client settings of this form:
480
{ client_name: {setting_name: value, ...}, ...}
481
with exceptions for any special settings as defined above.
482
NOTE: Must be a pure function. Must return the same result
483
value given the same arguments.
484
"""
485
settings = {}
486
for client_name in config.sections():
487
section = dict(config.items(client_name))
488
client = settings[client_name] = {}
489
490
client["host"] = section["host"]
491
# Reformat values from string types to Python types
492
client["approved_by_default"] = config.getboolean(
493
client_name, "approved_by_default")
494
client["enabled"] = config.getboolean(client_name,
495
"enabled")
496
497
client["fingerprint"] = (section["fingerprint"].upper()
498
.replace(" ", ""))
499
if "secret" in section:
500
client["secret"] = section["secret"].decode("base64")
501
elif "secfile" in section:
502
with open(os.path.expanduser(os.path.expandvars
503
(section["secfile"])),
504
"rb") as secfile:
505
client["secret"] = secfile.read()
506
else:
507
raise TypeError("No secret or secfile for section {0}"
508
.format(section))
509
client["timeout"] = string_to_delta(section["timeout"])
510
client["extended_timeout"] = string_to_delta(
511
section["extended_timeout"])
512
client["interval"] = string_to_delta(section["interval"])
513
client["approval_delay"] = string_to_delta(
514
section["approval_delay"])
515
client["approval_duration"] = string_to_delta(
516
section["approval_duration"])
517
client["checker_command"] = section["checker"]
518
client["last_approval_request"] = None
519
client["last_checked_ok"] = None
520
client["last_checker_status"] = -2
521
522
return settings
523
524
def __init__(self, settings, name = None, server_settings=None):
302
525
self.name = name
303
if config is None:
304
config = {}
305
logger.debug(u"Creating client %r", self.name)
526
if server_settings is None:
527
server_settings = {}
528
self.server_settings = server_settings
529
# adding all client settings
530
for setting, value in settings.iteritems():
531
setattr(self, setting, value)
532
533
if self.enabled:
534
if not hasattr(self, "last_enabled"):
535
self.last_enabled = datetime.datetime.utcnow()
536
if not hasattr(self, "expires"):
537
self.expires = (datetime.datetime.utcnow()
538
+ self.timeout)
539
else:
540
self.last_enabled = None
541
self.expires = None
542
543
logger.debug("Creating client %r", self.name)
306
544
# Uppercase and remove spaces from fingerprint for later
307
545
# comparison purposes with return value from the fingerprint()
308
546
# function
309
self.fingerprint = (config[u"fingerprint"].upper()
310
.replace(u" ", u""))
311
logger.debug(u" Fingerprint: %s", self.fingerprint)
312
if u"secret" in config:
313
self.secret = config[u"secret"].decode(u"base64")
314
elif u"secfile" in config:
315
with open(os.path.expanduser(os.path.expandvars
316
(config[u"secfile"])),
317
"rb") as secfile:
318
self.secret = secfile.read()
319
else:
320
raise TypeError(u"No secret or secfile for client %s"
321
% self.name)
322
self.host = config.get(u"host", u"")
323
self.created = datetime.datetime.utcnow()
324
self.enabled = False
325
self.last_approval_request = None
326
self.last_enabled = None
327
self.last_checked_ok = None
328
self.timeout = string_to_delta(config[u"timeout"])
329
self.interval = string_to_delta(config[u"interval"])
330
self.disable_hook = disable_hook
547
logger.debug(" Fingerprint: %s", self.fingerprint)
548
self.created = settings.get("created",
549
datetime.datetime.utcnow())
550
551
# attributes specific for this server instance
331
552
self.checker = None
332
553
self.checker_initiator_tag = None
333
554
self.disable_initiator_tag = None
334
555
self.checker_callback_tag = None
335
self.checker_command = config[u"checker"]
336
556
self.current_checker_command = None
337
self.last_connect = None
338
self._approved = None
339
self.approved_by_default = config.get(u"approved_by_default",
340
True)
557
self.approved = None
341
558
self.approvals_pending = 0
342
self.approval_delay = string_to_delta(
343
config[u"approval_delay"])
344
self.approval_duration = string_to_delta(
345
config[u"approval_duration"])
346
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
559
self.changedstate = (multiprocessing_manager
560
.Condition(multiprocessing_manager
561
.Lock()))
562
self.client_structure = [attr for attr in
563
self.__dict__.iterkeys()
564
if not attr.startswith("_")]
565
self.client_structure.append("client_structure")
566
567
for name, t in inspect.getmembers(type(self),
568
lambda obj:
569
isinstance(obj,
570
property)):
571
if not name.startswith("_"):
572
self.client_structure.append(name)
347
573
574
# Send notice to process children that client state has changed
348
575
def send_changedstate(self):
349
self.changedstate.acquire()
350
self.changedstate.notify_all()
351
self.changedstate.release()
352
576
with self.changedstate:
577
self.changedstate.notify_all()
578
353
579
def enable(self):
354
580
"""Start this client's checker and timeout hooks"""
355
if getattr(self, u"enabled", False):
581
if getattr(self, "enabled", False):
356
582
# Already enabled
357
583
return
358
self.send_changedstate()
584
self.expires = datetime.datetime.utcnow() + self.timeout
585
self.enabled = True
359
586
self.last_enabled = datetime.datetime.utcnow()
587
self.init_checker()
588
self.send_changedstate()
589
590
def disable(self, quiet=True):
591
"""Disable this client."""
592
if not getattr(self, "enabled", False):
593
return False
594
if not quiet:
595
logger.info("Disabling client %s", self.name)
596
if getattr(self, "disable_initiator_tag", None) is not None:
597
gobject.source_remove(self.disable_initiator_tag)
598
self.disable_initiator_tag = None
599
self.expires = None
600
if getattr(self, "checker_initiator_tag", None) is not None:
601
gobject.source_remove(self.checker_initiator_tag)
602
self.checker_initiator_tag = None
603
self.stop_checker()
604
self.enabled = False
605
if not quiet:
606
self.send_changedstate()
607
# Do not run this again if called by a gobject.timeout_add
608
return False
609
610
def __del__(self):
611
self.disable()
612
613
def init_checker(self):
360
614
# Schedule a new checker to be started an 'interval' from now,
361
615
# and every interval from then on.
616
if self.checker_initiator_tag is not None:
617
gobject.source_remove(self.checker_initiator_tag)
362
618
self.checker_initiator_tag = (gobject.timeout_add
363
619
(self.interval_milliseconds(),
364
620
self.start_checker))
365
621
# Schedule a disable() when 'timeout' has passed
622
if self.disable_initiator_tag is not None:
623
gobject.source_remove(self.disable_initiator_tag)
366
624
self.disable_initiator_tag = (gobject.timeout_add
367
625
(self.timeout_milliseconds(),
368
626
self.disable))
369
self.enabled = True
370
627
# Also start a new checker *right now*.
371
628
self.start_checker()
372
629
373
def disable(self, quiet=True):
374
"""Disable this client."""
375
if not getattr(self, "enabled", False):
376
return False
377
if not quiet:
378
self.send_changedstate()
379
if not quiet:
380
logger.info(u"Disabling client %s", self.name)
381
if getattr(self, u"disable_initiator_tag", False):
382
gobject.source_remove(self.disable_initiator_tag)
383
self.disable_initiator_tag = None
384
if getattr(self, u"checker_initiator_tag", False):
385
gobject.source_remove(self.checker_initiator_tag)
386
self.checker_initiator_tag = None
387
self.stop_checker()
388
if self.disable_hook:
389
self.disable_hook(self)
390
self.enabled = False
391
# Do not run this again if called by a gobject.timeout_add
392
return False
393
394
def __del__(self):
395
self.disable_hook = None
396
self.disable()
397
398
630
def checker_callback(self, pid, condition, command):
399
631
"""The checker has completed, so take appropriate actions."""
400
632
self.checker_callback_tag = None
401
633
self.checker = None
402
634
if os.WIFEXITED(condition):
403
exitstatus = os.WEXITSTATUS(condition)
404
if exitstatus == 0:
405
logger.info(u"Checker for %(name)s succeeded",
635
self.last_checker_status = os.WEXITSTATUS(condition)
636
if self.last_checker_status == 0:
637
logger.info("Checker for %(name)s succeeded",
406
638
vars(self))
407
639
self.checked_ok()
408
640
else:
409
logger.info(u"Checker for %(name)s failed",
641
logger.info("Checker for %(name)s failed",
410
642
vars(self))
411
643
else:
412
logger.warning(u"Checker for %(name)s crashed?",
644
self.last_checker_status = -1
645
logger.warning("Checker for %(name)s crashed?",
413
646
vars(self))
414
647
415
648
def checked_ok(self):
416
"""Bump up the timeout for this client.
417
418
This should only be called when the client has been seen,
419
alive and well.
420
"""
649
"""Assert that the client has been seen, alive and well."""
421
650
self.last_checked_ok = datetime.datetime.utcnow()
422
gobject.source_remove(self.disable_initiator_tag)
423
self.disable_initiator_tag = (gobject.timeout_add
424
(self.timeout_milliseconds(),
425
self.disable))
651
self.last_checker_status = 0
652
self.bump_timeout()
653
654
def bump_timeout(self, timeout=None):
655
"""Bump up the timeout for this client."""
656
if timeout is None:
657
timeout = self.timeout
658
if self.disable_initiator_tag is not None:
659
gobject.source_remove(self.disable_initiator_tag)
660
self.disable_initiator_tag = None
661
if getattr(self, "enabled", False):
662
self.disable_initiator_tag = (gobject.timeout_add
663
(timedelta_to_milliseconds
664
(timeout), self.disable))
665
self.expires = datetime.datetime.utcnow() + timeout
426
666
427
667
def need_approval(self):
428
668
self.last_approval_request = datetime.datetime.utcnow()
433
673
If a checker already exists, leave it running and do
434
674
nothing."""
435
675
# The reason for not killing a running checker is that if we
436
# did that, then if a checker (for some reason) started
437
# running slowly and taking more than 'interval' time, the
438
# client would inevitably timeout, since no checker would get
439
# a chance to run to completion. If we instead leave running
676
# did that, and if a checker (for some reason) started running
677
# slowly and taking more than 'interval' time, then the client
678
# would inevitably timeout, since no checker would get a
679
# chance to run to completion. If we instead leave running
440
680
# checkers alone, the checker would have to take more time
441
681
# than 'timeout' for the client to be disabled, which is as it
442
682
# should be.
444
684
# If a checker exists, make sure it is not a zombie
445
685
try:
446
686
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
447
except (AttributeError, OSError), error:
687
except (AttributeError, OSError) as error:
448
688
if (isinstance(error, OSError)
449
689
and error.errno != errno.ECHILD):
450
690
raise error
451
691
else:
452
692
if pid:
453
logger.warning(u"Checker was a zombie")
693
logger.warning("Checker was a zombie")
454
694
gobject.source_remove(self.checker_callback_tag)
455
695
self.checker_callback(pid, status,
456
696
self.current_checker_command)
457
697
# Start a new checker if needed
458
698
if self.checker is None:
699
# Escape attributes for the shell
700
escaped_attrs = dict(
701
(attr, re.escape(unicode(getattr(self, attr))))
702
for attr in
703
self.runtime_expansions)
459
704
try:
460
# In case checker_command has exactly one % operator
461
command = self.checker_command % self.host
462
except TypeError:
463
# Escape attributes for the shell
464
escaped_attrs = dict(
465
(attr,
466
re.escape(unicode(str(getattr(self, attr, u"")),
467
errors=
468
u'replace')))
469
for attr in
470
self.runtime_expansions)
471
472
try:
473
command = self.checker_command % escaped_attrs
474
except TypeError, error:
475
logger.error(u'Could not format string "%s":'
476
u' %s', self.checker_command, error)
477
return True # Try again later
705
command = self.checker_command % escaped_attrs
706
except TypeError as error:
707
logger.error('Could not format string "%s"',
708
self.checker_command, exc_info=error)
709
return True # Try again later
478
710
self.current_checker_command = command
479
711
try:
480
logger.info(u"Starting checker %r for %s",
712
logger.info("Starting checker %r for %s",
481
713
command, self.name)
482
714
# We don't need to redirect stdout and stderr, since
483
715
# in normal mode, that is already done by daemon(),
484
716
# and in debug mode we don't want to. (Stdin is
485
717
# always replaced by /dev/null.)
718
# The exception is when not debugging but nevertheless
719
# running in the foreground; use the previously
720
# created wnull.
721
popen_args = {}
722
if (not self.server_settings["debug"]
723
and self.server_settings["foreground"]):
724
popen_args.update({"stdout": wnull,
725
"stderr": wnull })
486
726
self.checker = subprocess.Popen(command,
487
727
close_fds=True,
488
shell=True, cwd=u"/")
489
self.checker_callback_tag = (gobject.child_watch_add
490
(self.checker.pid,
491
self.checker_callback,
492
data=command))
493
# The checker may have completed before the gobject
494
# watch was added. Check for this.
728
shell=True, cwd="/",
729
**popen_args)
730
except OSError as error:
731
logger.error("Failed to start subprocess",
732
exc_info=error)
733
return True
734
self.checker_callback_tag = (gobject.child_watch_add
735
(self.checker.pid,
736
self.checker_callback,
737
data=command))
738
# The checker may have completed before the gobject
739
# watch was added. Check for this.
740
try:
495
741
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
496
if pid:
497
gobject.source_remove(self.checker_callback_tag)
498
self.checker_callback(pid, status, command)
499
except OSError, error:
500
logger.error(u"Failed to start subprocess: %s",
501
error)
742
except OSError as error:
743
if error.errno == errno.ECHILD:
744
# This should never happen
745
logger.error("Child process vanished",
746
exc_info=error)
747
return True
748
raise
749
if pid:
750
gobject.source_remove(self.checker_callback_tag)
751
self.checker_callback(pid, status, command)
502
752
# Re-run this periodically if run by gobject.timeout_add
503
753
return True
504
754
507
757
if self.checker_callback_tag:
508
758
gobject.source_remove(self.checker_callback_tag)
509
759
self.checker_callback_tag = None
510
if getattr(self, u"checker", None) is None:
760
if getattr(self, "checker", None) is None:
511
761
return
512
logger.debug(u"Stopping checker for %(name)s", vars(self))
762
logger.debug("Stopping checker for %(name)s", vars(self))
513
763
try:
514
os.kill(self.checker.pid, signal.SIGTERM)
764
self.checker.terminate()
515
765
#time.sleep(0.5)
516
766
#if self.checker.poll() is None:
517
# os.kill(self.checker.pid, signal.SIGKILL)
518
except OSError, error:
767
# self.checker.kill()
768
except OSError as error:
519
769
if error.errno != errno.ESRCH: # No such process
520
770
raise
521
771
self.checker = None
522
772
523
def dbus_service_property(dbus_interface, signature=u"v",
524
access=u"readwrite", byte_arrays=False):
773
774
def dbus_service_property(dbus_interface, signature="v",
775
access="readwrite", byte_arrays=False):
525
776
"""Decorators for marking methods of a DBusObjectWithProperties to
526
777
become properties on the D-Bus.
527
778
534
785
"""
535
786
# Encoding deeply encoded byte arrays is not supported yet by the
536
787
# "Set" method, so we fail early here:
537
if byte_arrays and signature != u"ay":
538
raise ValueError(u"Byte arrays not supported for non-'ay'"
539
u" signature %r" % signature)
788
if byte_arrays and signature != "ay":
789
raise ValueError("Byte arrays not supported for non-'ay'"
790
" signature {0!r}".format(signature))
540
791
def decorator(func):
541
792
func._dbus_is_property = True
542
793
func._dbus_interface = dbus_interface
543
794
func._dbus_signature = signature
544
795
func._dbus_access = access
545
796
func._dbus_name = func.__name__
546
if func._dbus_name.endswith(u"_dbus_property"):
797
if func._dbus_name.endswith("_dbus_property"):
547
798
func._dbus_name = func._dbus_name[:-14]
548
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
799
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
800
return func
801
return decorator
802
803
804
def dbus_interface_annotations(dbus_interface):
805
"""Decorator for marking functions returning interface annotations
806
807
Usage:
808
809
@dbus_interface_annotations("org.example.Interface")
810
def _foo(self): # Function name does not matter
811
return {"org.freedesktop.DBus.Deprecated": "true",
812
"org.freedesktop.DBus.Property.EmitsChangedSignal":
813
"false"}
814
"""
815
def decorator(func):
816
func._dbus_is_interface = True
817
func._dbus_interface = dbus_interface
818
func._dbus_name = dbus_interface
819
return func
820
return decorator
821
822
823
def dbus_annotations(annotations):
824
"""Decorator to annotate D-Bus methods, signals or properties
825
Usage:
826
827
@dbus_service_property("org.example.Interface", signature="b",
828
access="r")
829
@dbus_annotations({{"org.freedesktop.DBus.Deprecated": "true",
830
"org.freedesktop.DBus.Property."
831
"EmitsChangedSignal": "false"})
832
def Property_dbus_property(self):
833
return dbus.Boolean(False)
834
"""
835
def decorator(func):
836
func._dbus_annotations = annotations
549
837
return func
550
838
return decorator
551
839
571
859
572
860
class DBusObjectWithProperties(dbus.service.Object):
573
861
"""A D-Bus object with properties.
574
862
575
863
Classes inheriting from this can use the dbus_service_property
576
864
decorator to expose methods as D-Bus properties. It exposes the
577
865
standard Get(), Set(), and GetAll() methods on the D-Bus.
578
866
"""
579
867
580
868
@staticmethod
581
def _is_dbus_property(obj):
582
return getattr(obj, u"_dbus_is_property", False)
869
def _is_dbus_thing(thing):
870
"""Returns a function testing if an attribute is a D-Bus thing
871
872
If called like _is_dbus_thing("method") it returns a function
873
suitable for use as predicate to inspect.getmembers().
874
"""
875
return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),
876
False)
583
877
584
def _get_all_dbus_properties(self):
878
def _get_all_dbus_things(self, thing):
585
879
"""Returns a generator of (name, attribute) pairs
586
880
"""
587
return ((prop._dbus_name, prop)
588
for name, prop in
589
inspect.getmembers(self, self._is_dbus_property))
881
return ((getattr(athing.__get__(self), "_dbus_name",
882
name),
883
athing.__get__(self))
884
for cls in self.__class__.__mro__
885
for name, athing in
886
inspect.getmembers(cls,
887
self._is_dbus_thing(thing)))
590
888
591
889
def _get_dbus_property(self, interface_name, property_name):
592
890
"""Returns a bound method if one exists which is a D-Bus
593
891
property with the specified name and interface.
594
892
"""
595
for name in (property_name,
596
property_name + u"_dbus_property"):
597
prop = getattr(self, name, None)
598
if (prop is None
599
or not self._is_dbus_property(prop)
600
or prop._dbus_name != property_name
601
or (interface_name and prop._dbus_interface
602
and interface_name != prop._dbus_interface)):
603
continue
604
return prop
893
for cls in self.__class__.__mro__:
894
for name, value in (inspect.getmembers
895
(cls,
896
self._is_dbus_thing("property"))):
897
if (value._dbus_name == property_name
898
and value._dbus_interface == interface_name):
899
return value.__get__(self)
900
605
901
# No such property
606
raise DBusPropertyNotFound(self.dbus_object_path + u":"
607
+ interface_name + u"."
902
raise DBusPropertyNotFound(self.dbus_object_path + ":"
903
+ interface_name + "."
608
904
+ property_name)
609
905
610
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
611
out_signature=u"v")
906
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
907
out_signature="v")
612
908
def Get(self, interface_name, property_name):
613
909
"""Standard D-Bus property Get() method, see D-Bus standard.
614
910
"""
615
911
prop = self._get_dbus_property(interface_name, property_name)
616
if prop._dbus_access == u"write":
912
if prop._dbus_access == "write":
617
913
raise DBusPropertyAccessException(property_name)
618
914
value = prop()
619
if not hasattr(value, u"variant_level"):
915
if not hasattr(value, "variant_level"):
620
916
return value
621
917
return type(value)(value, variant_level=value.variant_level+1)
622
918
623
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
919
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
624
920
def Set(self, interface_name, property_name, value):
625
921
"""Standard D-Bus property Set() method, see D-Bus standard.
626
922
"""
627
923
prop = self._get_dbus_property(interface_name, property_name)
628
if prop._dbus_access == u"read":
924
if prop._dbus_access == "read":
629
925
raise DBusPropertyAccessException(property_name)
630
if prop._dbus_get_args_options[u"byte_arrays"]:
926
if prop._dbus_get_args_options["byte_arrays"]:
631
927
# The byte_arrays option is not supported yet on
632
928
# signatures other than "ay".
633
if prop._dbus_signature != u"ay":
929
if prop._dbus_signature != "ay":
634
930
raise ValueError
635
value = dbus.ByteArray(''.join(unichr(byte)
636
for byte in value))
931
value = dbus.ByteArray(b''.join(chr(byte)
932
for byte in value))
637
933
prop(value)
638
934
639
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
640
out_signature=u"a{sv}")
935
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
936
out_signature="a{sv}")
641
937
def GetAll(self, interface_name):
642
938
"""Standard D-Bus property GetAll() method, see D-Bus
643
939
standard.
644
940
645
941
Note: Will not include properties with access="write".
646
942
"""
647
all = {}
648
for name, prop in self._get_all_dbus_properties():
943
properties = {}
944
for name, prop in self._get_all_dbus_things("property"):
649
945
if (interface_name
650
946
and interface_name != prop._dbus_interface):
651
947
# Interface non-empty but did not match
652
948
continue
653
949
# Ignore write-only properties
654
if prop._dbus_access == u"write":
950
if prop._dbus_access == "write":
655
951
continue
656
952
value = prop()
657
if not hasattr(value, u"variant_level"):
658
all[name] = value
953
if not hasattr(value, "variant_level"):
954
properties[name] = value
659
955
continue
660
all[name] = type(value)(value, variant_level=
661
value.variant_level+1)
662
return dbus.Dictionary(all, signature=u"sv")
956
properties[name] = type(value)(value, variant_level=
957
value.variant_level+1)
958
return dbus.Dictionary(properties, signature="sv")
663
959
664
960
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
665
out_signature=u"s",
961
out_signature="s",
666
962
path_keyword='object_path',
667
963
connection_keyword='connection')
668
964
def Introspect(self, object_path, connection):
669
"""Standard D-Bus method, overloaded to insert property tags.
965
"""Overloading of standard D-Bus method.
966
967
Inserts property tags and interface annotation tags.
670
968
"""
671
969
xmlstring = dbus.service.Object.Introspect(self, object_path,
672
970
connection)
673
971
try:
674
972
document = xml.dom.minidom.parseString(xmlstring)
675
973
def make_tag(document, name, prop):
676
e = document.createElement(u"property")
677
e.setAttribute(u"name", name)
678
e.setAttribute(u"type", prop._dbus_signature)
679
e.setAttribute(u"access", prop._dbus_access)
974
e = document.createElement("property")
975
e.setAttribute("name", name)
976
e.setAttribute("type", prop._dbus_signature)
977
e.setAttribute("access", prop._dbus_access)
680
978
return e
681
for if_tag in document.getElementsByTagName(u"interface"):
979
for if_tag in document.getElementsByTagName("interface"):
980
# Add property tags
682
981
for tag in (make_tag(document, name, prop)
683
982
for name, prop
684
in self._get_all_dbus_properties()
983
in self._get_all_dbus_things("property")
685
984
if prop._dbus_interface
686
== if_tag.getAttribute(u"name")):
985
== if_tag.getAttribute("name")):
687
986
if_tag.appendChild(tag)
987
# Add annotation tags
988
for typ in ("method", "signal", "property"):
989
for tag in if_tag.getElementsByTagName(typ):
990
annots = dict()
991
for name, prop in (self.
992
_get_all_dbus_things(typ)):
993
if (name == tag.getAttribute("name")
994
and prop._dbus_interface
995
== if_tag.getAttribute("name")):
996
annots.update(getattr
997
(prop,
998
"_dbus_annotations",
999
{}))
1000
for name, value in annots.iteritems():
1001
ann_tag = document.createElement(
1002
"annotation")
1003
ann_tag.setAttribute("name", name)
1004
ann_tag.setAttribute("value", value)
1005
tag.appendChild(ann_tag)
1006
# Add interface annotation tags
1007
for annotation, value in dict(
1008
itertools.chain.from_iterable(
1009
annotations().iteritems()
1010
for name, annotations in
1011
self._get_all_dbus_things("interface")
1012
if name == if_tag.getAttribute("name")
1013
)).iteritems():
1014
ann_tag = document.createElement("annotation")
1015
ann_tag.setAttribute("name", annotation)
1016
ann_tag.setAttribute("value", value)
1017
if_tag.appendChild(ann_tag)
688
1018
# Add the names to the return values for the
689
1019
# "org.freedesktop.DBus.Properties" methods
690
if (if_tag.getAttribute(u"name")
691
== u"org.freedesktop.DBus.Properties"):
692
for cn in if_tag.getElementsByTagName(u"method"):
693
if cn.getAttribute(u"name") == u"Get":
694
for arg in cn.getElementsByTagName(u"arg"):
695
if (arg.getAttribute(u"direction")
696
== u"out"):
697
arg.setAttribute(u"name", u"value")
698
elif cn.getAttribute(u"name") == u"GetAll":
699
for arg in cn.getElementsByTagName(u"arg"):
700
if (arg.getAttribute(u"direction")
701
== u"out"):
702
arg.setAttribute(u"name", u"props")
703
xmlstring = document.toxml(u"utf-8")
1020
if (if_tag.getAttribute("name")
1021
== "org.freedesktop.DBus.Properties"):
1022
for cn in if_tag.getElementsByTagName("method"):
1023
if cn.getAttribute("name") == "Get":
1024
for arg in cn.getElementsByTagName("arg"):
1025
if (arg.getAttribute("direction")
1026
== "out"):
1027
arg.setAttribute("name", "value")
1028
elif cn.getAttribute("name") == "GetAll":
1029
for arg in cn.getElementsByTagName("arg"):
1030
if (arg.getAttribute("direction")
1031
== "out"):
1032
arg.setAttribute("name", "props")
1033
xmlstring = document.toxml("utf-8")
704
1034
document.unlink()
705
1035
except (AttributeError, xml.dom.DOMException,
706
xml.parsers.expat.ExpatError), error:
707
logger.error(u"Failed to override Introspection method",
708
error)
1036
xml.parsers.expat.ExpatError) as error:
1037
logger.error("Failed to override Introspection method",
1038
exc_info=error)
709
1039
return xmlstring
710
1040
711
1041
1042
def datetime_to_dbus(dt, variant_level=0):
1043
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1044
if dt is None:
1045
return dbus.String("", variant_level = variant_level)
1046
return dbus.String(dt.isoformat(),
1047
variant_level=variant_level)
1048
1049
1050
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1051
"""A class decorator; applied to a subclass of
1052
dbus.service.Object, it will add alternate D-Bus attributes with
1053
interface names according to the "alt_interface_names" mapping.
1054
Usage:
1055
1056
@alternate_dbus_interfaces({"org.example.Interface":
1057
"net.example.AlternateInterface"})
1058
class SampleDBusObject(dbus.service.Object):
1059
@dbus.service.method("org.example.Interface")
1060
def SampleDBusMethod():
1061
pass
1062
1063
The above "SampleDBusMethod" on "SampleDBusObject" will be
1064
reachable via two interfaces: "org.example.Interface" and
1065
"net.example.AlternateInterface", the latter of which will have
1066
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1067
"true", unless "deprecate" is passed with a False value.
1068
1069
This works for methods and signals, and also for D-Bus properties
1070
(from DBusObjectWithProperties) and interfaces (from the
1071
dbus_interface_annotations decorator).
1072
"""
1073
def wrapper(cls):
1074
for orig_interface_name, alt_interface_name in (
1075
alt_interface_names.iteritems()):
1076
attr = {}
1077
interface_names = set()
1078
# Go though all attributes of the class
1079
for attrname, attribute in inspect.getmembers(cls):
1080
# Ignore non-D-Bus attributes, and D-Bus attributes
1081
# with the wrong interface name
1082
if (not hasattr(attribute, "_dbus_interface")
1083
or not attribute._dbus_interface
1084
.startswith(orig_interface_name)):
1085
continue
1086
# Create an alternate D-Bus interface name based on
1087
# the current name
1088
alt_interface = (attribute._dbus_interface
1089
.replace(orig_interface_name,
1090
alt_interface_name))
1091
interface_names.add(alt_interface)
1092
# Is this a D-Bus signal?
1093
if getattr(attribute, "_dbus_is_signal", False):
1094
# Extract the original non-method undecorated
1095
# function by black magic
1096
nonmethod_func = (dict(
1097
zip(attribute.func_code.co_freevars,
1098
attribute.__closure__))["func"]
1099
.cell_contents)
1100
# Create a new, but exactly alike, function
1101
# object, and decorate it to be a new D-Bus signal
1102
# with the alternate D-Bus interface name
1103
new_function = (dbus.service.signal
1104
(alt_interface,
1105
attribute._dbus_signature)
1106
(types.FunctionType(
1107
nonmethod_func.func_code,
1108
nonmethod_func.func_globals,
1109
nonmethod_func.func_name,
1110
nonmethod_func.func_defaults,
1111
nonmethod_func.func_closure)))
1112
# Copy annotations, if any
1113
try:
1114
new_function._dbus_annotations = (
1115
dict(attribute._dbus_annotations))
1116
except AttributeError:
1117
pass
1118
# Define a creator of a function to call both the
1119
# original and alternate functions, so both the
1120
# original and alternate signals gets sent when
1121
# the function is called
1122
def fixscope(func1, func2):
1123
"""This function is a scope container to pass
1124
func1 and func2 to the "call_both" function
1125
outside of its arguments"""
1126
def call_both(*args, **kwargs):
1127
"""This function will emit two D-Bus
1128
signals by calling func1 and func2"""
1129
func1(*args, **kwargs)
1130
func2(*args, **kwargs)
1131
return call_both
1132
# Create the "call_both" function and add it to
1133
# the class
1134
attr[attrname] = fixscope(attribute, new_function)
1135
# Is this a D-Bus method?
1136
elif getattr(attribute, "_dbus_is_method", False):
1137
# Create a new, but exactly alike, function
1138
# object. Decorate it to be a new D-Bus method
1139
# with the alternate D-Bus interface name. Add it
1140
# to the class.
1141
attr[attrname] = (dbus.service.method
1142
(alt_interface,
1143
attribute._dbus_in_signature,
1144
attribute._dbus_out_signature)
1145
(types.FunctionType
1146
(attribute.func_code,
1147
attribute.func_globals,
1148
attribute.func_name,
1149
attribute.func_defaults,
1150
attribute.func_closure)))
1151
# Copy annotations, if any
1152
try:
1153
attr[attrname]._dbus_annotations = (
1154
dict(attribute._dbus_annotations))
1155
except AttributeError:
1156
pass
1157
# Is this a D-Bus property?
1158
elif getattr(attribute, "_dbus_is_property", False):
1159
# Create a new, but exactly alike, function
1160
# object, and decorate it to be a new D-Bus
1161
# property with the alternate D-Bus interface
1162
# name. Add it to the class.
1163
attr[attrname] = (dbus_service_property
1164
(alt_interface,
1165
attribute._dbus_signature,
1166
attribute._dbus_access,
1167
attribute
1168
._dbus_get_args_options
1169
["byte_arrays"])
1170
(types.FunctionType
1171
(attribute.func_code,
1172
attribute.func_globals,
1173
attribute.func_name,
1174
attribute.func_defaults,
1175
attribute.func_closure)))
1176
# Copy annotations, if any
1177
try:
1178
attr[attrname]._dbus_annotations = (
1179
dict(attribute._dbus_annotations))
1180
except AttributeError:
1181
pass
1182
# Is this a D-Bus interface?
1183
elif getattr(attribute, "_dbus_is_interface", False):
1184
# Create a new, but exactly alike, function
1185
# object. Decorate it to be a new D-Bus interface
1186
# with the alternate D-Bus interface name. Add it
1187
# to the class.
1188
attr[attrname] = (dbus_interface_annotations
1189
(alt_interface)
1190
(types.FunctionType
1191
(attribute.func_code,
1192
attribute.func_globals,
1193
attribute.func_name,
1194
attribute.func_defaults,
1195
attribute.func_closure)))
1196
if deprecate:
1197
# Deprecate all alternate interfaces
1198
iname="_AlternateDBusNames_interface_annotation{0}"
1199
for interface_name in interface_names:
1200
@dbus_interface_annotations(interface_name)
1201
def func(self):
1202
return { "org.freedesktop.DBus.Deprecated":
1203
"true" }
1204
# Find an unused name
1205
for aname in (iname.format(i)
1206
for i in itertools.count()):
1207
if aname not in attr:
1208
attr[aname] = func
1209
break
1210
if interface_names:
1211
# Replace the class with a new subclass of it with
1212
# methods, signals, etc. as created above.
1213
cls = type(b"{0}Alternate".format(cls.__name__),
1214
(cls,), attr)
1215
return cls
1216
return wrapper
1217
1218
1219
@alternate_dbus_interfaces({"se.recompile.Mandos":
1220
"se.bsnet.fukt.Mandos"})
712
1221
class ClientDBus(Client, DBusObjectWithProperties):
713
1222
"""A Client class using D-Bus
714
1223
718
1227
"""
719
1228
720
1229
runtime_expansions = (Client.runtime_expansions
721
+ (u"dbus_object_path",))
1230
+ ("dbus_object_path",))
722
1231
723
1232
# dbus.service.Object doesn't use super(), so we can't either.
724
1233
725
1234
def __init__(self, bus = None, *args, **kwargs):
726
self._approvals_pending = 0
727
1235
self.bus = bus
728
1236
Client.__init__(self, *args, **kwargs)
729
1237
# Only now, when this client is initialized, can it show up on
730
1238
# the D-Bus
731
1239
client_object_name = unicode(self.name).translate(
732
{ord(u"."): ord(u"_"),
733
ord(u"-"): ord(u"_")})
1240
{ord("."): ord("_"),
1241
ord("-"): ord("_")})
734
1242
self.dbus_object_path = (dbus.ObjectPath
735
(u"/clients/" + client_object_name))
1243
("/clients/" + client_object_name))
736
1244
DBusObjectWithProperties.__init__(self, self.bus,
737
1245
self.dbus_object_path)
738
739
def _get_approvals_pending(self):
740
return self._approvals_pending
741
def _set_approvals_pending(self, value):
742
old_value = self._approvals_pending
743
self._approvals_pending = value
744
bval = bool(value)
745
if (hasattr(self, "dbus_object_path")
746
and bval is not bool(old_value)):
747
dbus_bool = dbus.Boolean(bval, variant_level=1)
748
self.PropertyChanged(dbus.String(u"ApprovalPending"),
749
dbus_bool)
750
751
approvals_pending = property(_get_approvals_pending,
752
_set_approvals_pending)
753
del _get_approvals_pending, _set_approvals_pending
754
755
@staticmethod
756
def _datetime_to_dbus(dt, variant_level=0):
757
"""Convert a UTC datetime.datetime() to a D-Bus type."""
758
return dbus.String(dt.isoformat(),
759
variant_level=variant_level)
760
761
def enable(self):
762
oldstate = getattr(self, u"enabled", False)
763
r = Client.enable(self)
764
if oldstate != self.enabled:
765
# Emit D-Bus signals
766
self.PropertyChanged(dbus.String(u"Enabled"),
767
dbus.Boolean(True, variant_level=1))
768
self.PropertyChanged(
769
dbus.String(u"LastEnabled"),
770
self._datetime_to_dbus(self.last_enabled,
771
variant_level=1))
772
return r
773
774
def disable(self, quiet = False):
775
oldstate = getattr(self, u"enabled", False)
776
r = Client.disable(self, quiet=quiet)
777
if not quiet and oldstate != self.enabled:
778
# Emit D-Bus signal
779
self.PropertyChanged(dbus.String(u"Enabled"),
780
dbus.Boolean(False, variant_level=1))
781
return r
1246
1247
def notifychangeproperty(transform_func,
1248
dbus_name, type_func=lambda x: x,
1249
variant_level=1):
1250
""" Modify a variable so that it's a property which announces
1251
its changes to DBus.
1252
1253
transform_fun: Function that takes a value and a variant_level
1254
and transforms it to a D-Bus type.
1255
dbus_name: D-Bus name of the variable
1256
type_func: Function that transform the value before sending it
1257
to the D-Bus. Default: no transform
1258
variant_level: D-Bus variant level. Default: 1
1259
"""
1260
attrname = "_{0}".format(dbus_name)
1261
def setter(self, value):
1262
if hasattr(self, "dbus_object_path"):
1263
if (not hasattr(self, attrname) or
1264
type_func(getattr(self, attrname, None))
1265
!= type_func(value)):
1266
dbus_value = transform_func(type_func(value),
1267
variant_level
1268
=variant_level)
1269
self.PropertyChanged(dbus.String(dbus_name),
1270
dbus_value)
1271
setattr(self, attrname, value)
1272
1273
return property(lambda self: getattr(self, attrname), setter)
1274
1275
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1276
approvals_pending = notifychangeproperty(dbus.Boolean,
1277
"ApprovalPending",
1278
type_func = bool)
1279
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1280
last_enabled = notifychangeproperty(datetime_to_dbus,
1281
"LastEnabled")
1282
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1283
type_func = lambda checker:
1284
checker is not None)
1285
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1286
"LastCheckedOK")
1287
last_checker_status = notifychangeproperty(dbus.Int16,
1288
"LastCheckerStatus")
1289
last_approval_request = notifychangeproperty(
1290
datetime_to_dbus, "LastApprovalRequest")
1291
approved_by_default = notifychangeproperty(dbus.Boolean,
1292
"ApprovedByDefault")
1293
approval_delay = notifychangeproperty(dbus.UInt64,
1294
"ApprovalDelay",
1295
type_func =
1296
timedelta_to_milliseconds)
1297
approval_duration = notifychangeproperty(
1298
dbus.UInt64, "ApprovalDuration",
1299
type_func = timedelta_to_milliseconds)
1300
host = notifychangeproperty(dbus.String, "Host")
1301
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1302
type_func =
1303
timedelta_to_milliseconds)
1304
extended_timeout = notifychangeproperty(
1305
dbus.UInt64, "ExtendedTimeout",
1306
type_func = timedelta_to_milliseconds)
1307
interval = notifychangeproperty(dbus.UInt64,
1308
"Interval",
1309
type_func =
1310
timedelta_to_milliseconds)
1311
checker_command = notifychangeproperty(dbus.String, "Checker")
1312
1313
del notifychangeproperty
782
1314
783
1315
def __del__(self, *args, **kwargs):
784
1316
try:
785
1317
self.remove_from_connection()
786
1318
except LookupError:
787
1319
pass
788
if hasattr(DBusObjectWithProperties, u"__del__"):
1320
if hasattr(DBusObjectWithProperties, "__del__"):
789
1321
DBusObjectWithProperties.__del__(self, *args, **kwargs)
790
1322
Client.__del__(self, *args, **kwargs)
791
1323
793
1325
*args, **kwargs):
794
1326
self.checker_callback_tag = None
795
1327
self.checker = None
796
# Emit D-Bus signal
797
self.PropertyChanged(dbus.String(u"CheckerRunning"),
798
dbus.Boolean(False, variant_level=1))
799
1328
if os.WIFEXITED(condition):
800
1329
exitstatus = os.WEXITSTATUS(condition)
801
1330
# Emit D-Bus signal
811
1340
return Client.checker_callback(self, pid, condition, command,
812
1341
*args, **kwargs)
813
1342
814
def checked_ok(self, *args, **kwargs):
815
r = Client.checked_ok(self, *args, **kwargs)
816
# Emit D-Bus signal
817
self.PropertyChanged(
818
dbus.String(u"LastCheckedOK"),
819
(self._datetime_to_dbus(self.last_checked_ok,
820
variant_level=1)))
821
return r
822
823
def need_approval(self, *args, **kwargs):
824
r = Client.need_approval(self, *args, **kwargs)
825
# Emit D-Bus signal
826
self.PropertyChanged(
827
dbus.String(u"LastApprovalRequest"),
828
(self._datetime_to_dbus(self.last_approval_request,
829
variant_level=1)))
830
return r
831
832
1343
def start_checker(self, *args, **kwargs):
833
1344
old_checker = self.checker
834
1345
if self.checker is not None:
841
1352
and old_checker_pid != self.checker.pid):
842
1353
# Emit D-Bus signal
843
1354
self.CheckerStarted(self.current_checker_command)
844
self.PropertyChanged(
845
dbus.String(u"CheckerRunning"),
846
dbus.Boolean(True, variant_level=1))
847
1355
return r
848
1356
849
def stop_checker(self, *args, **kwargs):
850
old_checker = getattr(self, u"checker", None)
851
r = Client.stop_checker(self, *args, **kwargs)
852
if (old_checker is not None
853
and getattr(self, u"checker", None) is None):
854
self.PropertyChanged(dbus.String(u"CheckerRunning"),
855
dbus.Boolean(False, variant_level=1))
856
return r
857
858
1357
def _reset_approved(self):
859
self._approved = None
1358
self.approved = None
860
1359
return False
861
1360
862
1361
def approve(self, value=True):
863
self.send_changedstate()
864
self._approved = value
865
gobject.timeout_add(self._timedelta_to_milliseconds
1362
self.approved = value
1363
gobject.timeout_add(timedelta_to_milliseconds
866
1364
(self.approval_duration),
867
1365
self._reset_approved)
868
1366
self.send_changedstate()
869
1367
870
1368
## D-Bus methods, signals & properties
871
_interface = u"se.bsnet.fukt.Mandos.Client"
1369
_interface = "se.recompile.Mandos.Client"
1370
1371
## Interfaces
1372
1373
@dbus_interface_annotations(_interface)
1374
def _foo(self):
1375
return { "org.freedesktop.DBus.Property.EmitsChangedSignal":
1376
"false"}
872
1377
873
1378
## Signals
874
1379
875
1380
# CheckerCompleted - signal
876
@dbus.service.signal(_interface, signature=u"nxs")
1381
@dbus.service.signal(_interface, signature="nxs")
877
1382
def CheckerCompleted(self, exitcode, waitstatus, command):
878
1383
"D-Bus signal"
879
1384
pass
880
1385
881
1386
# CheckerStarted - signal
882
@dbus.service.signal(_interface, signature=u"s")
1387
@dbus.service.signal(_interface, signature="s")
883
1388
def CheckerStarted(self, command):
884
1389
"D-Bus signal"
885
1390
pass
886
1391
887
1392
# PropertyChanged - signal
888
@dbus.service.signal(_interface, signature=u"sv")
1393
@dbus.service.signal(_interface, signature="sv")
889
1394
def PropertyChanged(self, property, value):
890
1395
"D-Bus signal"
891
1396
pass
900
1405
pass
901
1406
902
1407
# Rejected - signal
903
@dbus.service.signal(_interface, signature=u"s")
1408
@dbus.service.signal(_interface, signature="s")
904
1409
def Rejected(self, reason):
905
1410
"D-Bus signal"
906
1411
pass
907
1412
908
1413
# NeedApproval - signal
909
@dbus.service.signal(_interface, signature=u"tb")
1414
@dbus.service.signal(_interface, signature="tb")
910
1415
def NeedApproval(self, timeout, default):
911
1416
"D-Bus signal"
912
1417
return self.need_approval()
914
1419
## Methods
915
1420
916
1421
# Approve - method
917
@dbus.service.method(_interface, in_signature=u"b")
1422
@dbus.service.method(_interface, in_signature="b")
918
1423
def Approve(self, value):
919
1424
self.approve(value)
920
1425
921
1426
# CheckedOK - method
922
1427
@dbus.service.method(_interface)
923
1428
def CheckedOK(self):
924
return self.checked_ok()
1429
self.checked_ok()
925
1430
926
1431
# Enable - method
927
1432
@dbus.service.method(_interface)
949
1454
## Properties
950
1455
951
1456
# ApprovalPending - property
952
@dbus_service_property(_interface, signature=u"b", access=u"read")
1457
@dbus_service_property(_interface, signature="b", access="read")
953
1458
def ApprovalPending_dbus_property(self):
954
1459
return dbus.Boolean(bool(self.approvals_pending))
955
1460
956
1461
# ApprovedByDefault - property
957
@dbus_service_property(_interface, signature=u"b",
958
access=u"readwrite")
1462
@dbus_service_property(_interface, signature="b",
1463
access="readwrite")
959
1464
def ApprovedByDefault_dbus_property(self, value=None):
960
1465
if value is None: # get
961
1466
return dbus.Boolean(self.approved_by_default)
962
1467
self.approved_by_default = bool(value)
963
# Emit D-Bus signal
964
self.PropertyChanged(dbus.String(u"ApprovedByDefault"),
965
dbus.Boolean(value, variant_level=1))
966
1468
967
1469
# ApprovalDelay - property
968
@dbus_service_property(_interface, signature=u"t",
969
access=u"readwrite")
1470
@dbus_service_property(_interface, signature="t",
1471
access="readwrite")
970
1472
def ApprovalDelay_dbus_property(self, value=None):
971
1473
if value is None: # get
972
1474
return dbus.UInt64(self.approval_delay_milliseconds())
973
1475
self.approval_delay = datetime.timedelta(0, 0, 0, value)
974
# Emit D-Bus signal
975
self.PropertyChanged(dbus.String(u"ApprovalDelay"),
976
dbus.UInt64(value, variant_level=1))
977
1476
978
1477
# ApprovalDuration - property
979
@dbus_service_property(_interface, signature=u"t",
980
access=u"readwrite")
1478
@dbus_service_property(_interface, signature="t",
1479
access="readwrite")
981
1480
def ApprovalDuration_dbus_property(self, value=None):
982
1481
if value is None: # get
983
return dbus.UInt64(self._timedelta_to_milliseconds(
1482
return dbus.UInt64(timedelta_to_milliseconds(
984
1483
self.approval_duration))
985
1484
self.approval_duration = datetime.timedelta(0, 0, 0, value)
986
# Emit D-Bus signal
987
self.PropertyChanged(dbus.String(u"ApprovalDuration"),
988
dbus.UInt64(value, variant_level=1))
989
1485
990
1486
# Name - property
991
@dbus_service_property(_interface, signature=u"s", access=u"read")
1487
@dbus_service_property(_interface, signature="s", access="read")
992
1488
def Name_dbus_property(self):
993
1489
return dbus.String(self.name)
994
1490
995
1491
# Fingerprint - property
996
@dbus_service_property(_interface, signature=u"s", access=u"read")
1492
@dbus_service_property(_interface, signature="s", access="read")
997
1493
def Fingerprint_dbus_property(self):
998
1494
return dbus.String(self.fingerprint)
999
1495
1000
1496
# Host - property
1001
@dbus_service_property(_interface, signature=u"s",
1002
access=u"readwrite")
1497
@dbus_service_property(_interface, signature="s",
1498
access="readwrite")
1003
1499
def Host_dbus_property(self, value=None):
1004
1500
if value is None: # get
1005
1501
return dbus.String(self.host)
1006
self.host = value
1007
# Emit D-Bus signal
1008
self.PropertyChanged(dbus.String(u"Host"),
1009
dbus.String(value, variant_level=1))
1502
self.host = unicode(value)
1010
1503
1011
1504
# Created - property
1012
@dbus_service_property(_interface, signature=u"s", access=u"read")
1505
@dbus_service_property(_interface, signature="s", access="read")
1013
1506
def Created_dbus_property(self):
1014
return dbus.String(self._datetime_to_dbus(self.created))
1507
return datetime_to_dbus(self.created)
1015
1508
1016
1509
# LastEnabled - property
1017
@dbus_service_property(_interface, signature=u"s", access=u"read")
1510
@dbus_service_property(_interface, signature="s", access="read")
1018
1511
def LastEnabled_dbus_property(self):
1019
if self.last_enabled is None:
1020
return dbus.String(u"")
1021
return dbus.String(self._datetime_to_dbus(self.last_enabled))
1512
return datetime_to_dbus(self.last_enabled)
1022
1513
1023
1514
# Enabled - property
1024
@dbus_service_property(_interface, signature=u"b",
1025
access=u"readwrite")
1515
@dbus_service_property(_interface, signature="b",
1516
access="readwrite")
1026
1517
def Enabled_dbus_property(self, value=None):
1027
1518
if value is None: # get
1028
1519
return dbus.Boolean(self.enabled)
1032
1523
self.disable()
1033
1524
1034
1525
# LastCheckedOK - property
1035
@dbus_service_property(_interface, signature=u"s",
1036
access=u"readwrite")
1526
@dbus_service_property(_interface, signature="s",
1527
access="readwrite")
1037
1528
def LastCheckedOK_dbus_property(self, value=None):
1038
1529
if value is not None:
1039
1530
self.checked_ok()
1040
1531
return
1041
if self.last_checked_ok is None:
1042
return dbus.String(u"")
1043
return dbus.String(self._datetime_to_dbus(self
1044
.last_checked_ok))
1532
return datetime_to_dbus(self.last_checked_ok)
1533
1534
# LastCheckerStatus - property
1535
@dbus_service_property(_interface, signature="n",
1536
access="read")
1537
def LastCheckerStatus_dbus_property(self):
1538
return dbus.Int16(self.last_checker_status)
1539
1540
# Expires - property
1541
@dbus_service_property(_interface, signature="s", access="read")
1542
def Expires_dbus_property(self):
1543
return datetime_to_dbus(self.expires)
1045
1544
1046
1545
# LastApprovalRequest - property
1047
@dbus_service_property(_interface, signature=u"s", access=u"read")
1546
@dbus_service_property(_interface, signature="s", access="read")
1048
1547
def LastApprovalRequest_dbus_property(self):
1049
if self.last_approval_request is None:
1050
return dbus.String(u"")
1051
return dbus.String(self.
1052
_datetime_to_dbus(self
1053
.last_approval_request))
1548
return datetime_to_dbus(self.last_approval_request)
1054
1549
1055
1550
# Timeout - property
1056
@dbus_service_property(_interface, signature=u"t",
1057
access=u"readwrite")
1551
@dbus_service_property(_interface, signature="t",
1552
access="readwrite")
1058
1553
def Timeout_dbus_property(self, value=None):
1059
1554
if value is None: # get
1060
1555
return dbus.UInt64(self.timeout_milliseconds())
1556
old_timeout = self.timeout
1061
1557
self.timeout = datetime.timedelta(0, 0, 0, value)
1062
# Emit D-Bus signal
1063
self.PropertyChanged(dbus.String(u"Timeout"),
1064
dbus.UInt64(value, variant_level=1))
1065
if getattr(self, u"disable_initiator_tag", None) is None:
1066
return
1067
# Reschedule timeout
1068
gobject.source_remove(self.disable_initiator_tag)
1069
self.disable_initiator_tag = None
1070
time_to_die = (self.
1071
_timedelta_to_milliseconds((self
1072
.last_checked_ok
1073
+ self.timeout)
1074
- datetime.datetime
1075
.utcnow()))
1076
if time_to_die <= 0:
1077
# The timeout has passed
1078
self.disable()
1079
else:
1080
self.disable_initiator_tag = (gobject.timeout_add
1081
(time_to_die, self.disable))
1558
# Reschedule disabling
1559
if self.enabled:
1560
now = datetime.datetime.utcnow()
1561
self.expires += self.timeout - old_timeout
1562
if self.expires <= now:
1563
# The timeout has passed
1564
self.disable()
1565
else:
1566
if (getattr(self, "disable_initiator_tag", None)
1567
is None):
1568
return
1569
gobject.source_remove(self.disable_initiator_tag)
1570
self.disable_initiator_tag = (
1571
gobject.timeout_add(
1572
timedelta_to_milliseconds(self.expires - now),
1573
self.disable))
1574
1575
# ExtendedTimeout - property
1576
@dbus_service_property(_interface, signature="t",
1577
access="readwrite")
1578
def ExtendedTimeout_dbus_property(self, value=None):
1579
if value is None: # get
1580
return dbus.UInt64(self.extended_timeout_milliseconds())
1581
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1082
1582
1083
1583
# Interval - property
1084
@dbus_service_property(_interface, signature=u"t",
1085
access=u"readwrite")
1584
@dbus_service_property(_interface, signature="t",
1585
access="readwrite")
1086
1586
def Interval_dbus_property(self, value=None):
1087
1587
if value is None: # get
1088
1588
return dbus.UInt64(self.interval_milliseconds())
1089
1589
self.interval = datetime.timedelta(0, 0, 0, value)
1090
# Emit D-Bus signal
1091
self.PropertyChanged(dbus.String(u"Interval"),
1092
dbus.UInt64(value, variant_level=1))
1093
if getattr(self, u"checker_initiator_tag", None) is None:
1590
if getattr(self, "checker_initiator_tag", None) is None:
1094
1591
return
1095
# Reschedule checker run
1096
gobject.source_remove(self.checker_initiator_tag)
1097
self.checker_initiator_tag = (gobject.timeout_add
1098
(value, self.start_checker))
1099
self.start_checker() # Start one now, too
1100
1592
if self.enabled:
1593
# Reschedule checker run
1594
gobject.source_remove(self.checker_initiator_tag)
1595
self.checker_initiator_tag = (gobject.timeout_add
1596
(value, self.start_checker))
1597
self.start_checker() # Start one now, too
1598
1101
1599
# Checker - property
1102
@dbus_service_property(_interface, signature=u"s",
1103
access=u"readwrite")
1600
@dbus_service_property(_interface, signature="s",
1601
access="readwrite")
1104
1602
def Checker_dbus_property(self, value=None):
1105
1603
if value is None: # get
1106
1604
return dbus.String(self.checker_command)
1107
self.checker_command = value
1108
# Emit D-Bus signal
1109
self.PropertyChanged(dbus.String(u"Checker"),
1110
dbus.String(self.checker_command,
1111
variant_level=1))
1605
self.checker_command = unicode(value)
1112
1606
1113
1607
# CheckerRunning - property
1114
@dbus_service_property(_interface, signature=u"b",
1115
access=u"readwrite")
1608
@dbus_service_property(_interface, signature="b",
1609
access="readwrite")
1116
1610
def CheckerRunning_dbus_property(self, value=None):
1117
1611
if value is None: # get
1118
1612
return dbus.Boolean(self.checker is not None)
1122
1616
self.stop_checker()
1123
1617
1124
1618
# ObjectPath - property
1125
@dbus_service_property(_interface, signature=u"o", access=u"read")
1619
@dbus_service_property(_interface, signature="o", access="read")
1126
1620
def ObjectPath_dbus_property(self):
1127
1621
return self.dbus_object_path # is already a dbus.ObjectPath
1128
1622
1129
1623
# Secret = property
1130
@dbus_service_property(_interface, signature=u"ay",
1131
access=u"write", byte_arrays=True)
1624
@dbus_service_property(_interface, signature="ay",
1625
access="write", byte_arrays=True)
1132
1626
def Secret_dbus_property(self, value):
1133
1627
self.secret = str(value)
1134
1628
1141
1635
self._pipe.send(('init', fpr, address))
1142
1636
if not self._pipe.recv():
1143
1637
raise KeyError()
1144
1638
1145
1639
def __getattribute__(self, name):
1146
if(name == '_pipe'):
1640
if name == '_pipe':
1147
1641
return super(ProxyClient, self).__getattribute__(name)
1148
1642
self._pipe.send(('getattr', name))
1149
1643
data = self._pipe.recv()
1154
1648
self._pipe.send(('funcall', name, args, kwargs))
1155
1649
return self._pipe.recv()[1]
1156
1650
return func
1157
1651
1158
1652
def __setattr__(self, name, value):
1159
if(name == '_pipe'):
1653
if name == '_pipe':
1160
1654
return super(ProxyClient, self).__setattr__(name, value)
1161
1655
self._pipe.send(('setattr', name, value))
1162
1656
1169
1663
1170
1664
def handle(self):
1171
1665
with contextlib.closing(self.server.child_pipe) as child_pipe:
1172
logger.info(u"TCP connection from: %s",
1666
logger.info("TCP connection from: %s",
1173
1667
unicode(self.client_address))
1174
logger.debug(u"Pipe FD: %d",
1668
logger.debug("Pipe FD: %d",
1175
1669
self.server.child_pipe.fileno())
1176
1670
1177
1671
session = (gnutls.connection
1178
1672
.ClientSession(self.request,
1179
1673
gnutls.connection
1180
1674
.X509Credentials()))
1181
1675
1182
1676
# Note: gnutls.connection.X509Credentials is really a
1183
1677
# generic GnuTLS certificate credentials object so long as
1184
1678
# no X.509 keys are added to it. Therefore, we can use it
1185
1679
# here despite using OpenPGP certificates.
1186
1187
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1188
# u"+AES-256-CBC", u"+SHA1",
1189
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1190
# u"+DHE-DSS"))
1680
1681
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1682
# "+AES-256-CBC", "+SHA1",
1683
# "+COMP-NULL", "+CTYPE-OPENPGP",
1684
# "+DHE-DSS"))
1191
1685
# Use a fallback default, since this MUST be set.
1192
1686
priority = self.server.gnutls_priority
1193
1687
if priority is None:
1194
priority = u"NORMAL"
1688
priority = "NORMAL"
1195
1689
(gnutls.library.functions
1196
1690
.gnutls_priority_set_direct(session._c_object,
1197
1691
priority, None))
1198
1692
1199
1693
# Start communication using the Mandos protocol
1200
1694
# Get protocol number
1201
1695
line = self.request.makefile().readline()
1202
logger.debug(u"Protocol version: %r", line)
1696
logger.debug("Protocol version: %r", line)
1203
1697
try:
1204
1698
if int(line.strip().split()[0]) > 1:
1205
1699
raise RuntimeError
1206
except (ValueError, IndexError, RuntimeError), error:
1207
logger.error(u"Unknown protocol version: %s", error)
1700
except (ValueError, IndexError, RuntimeError) as error:
1701
logger.error("Unknown protocol version: %s", error)
1208
1702
return
1209
1703
1210
1704
# Start GnuTLS connection
1211
1705
try:
1212
1706
session.handshake()
1213
except gnutls.errors.GNUTLSError, error:
1214
logger.warning(u"Handshake failed: %s", error)
1707
except gnutls.errors.GNUTLSError as error:
1708
logger.warning("Handshake failed: %s", error)
1215
1709
# Do not run session.bye() here: the session is not
1216
1710
# established. Just abandon the request.
1217
1711
return
1218
logger.debug(u"Handshake succeeded")
1219
1712
logger.debug("Handshake succeeded")
1713
1220
1714
approval_required = False
1221
1715
try:
1222
1716
try:
1223
1717
fpr = self.fingerprint(self.peer_certificate
1224
1718
(session))
1225
except (TypeError, gnutls.errors.GNUTLSError), error:
1226
logger.warning(u"Bad certificate: %s", error)
1719
except (TypeError,
1720
gnutls.errors.GNUTLSError) as error:
1721
logger.warning("Bad certificate: %s", error)
1227
1722
return
1228
logger.debug(u"Fingerprint: %s", fpr)
1229
1723
logger.debug("Fingerprint: %s", fpr)
1724
1230
1725
try:
1231
1726
client = ProxyClient(child_pipe, fpr,
1232
1727
self.client_address)
1240
1735
1241
1736
while True:
1242
1737
if not client.enabled:
1243
logger.warning(u"Client %s is disabled",
1738
logger.info("Client %s is disabled",
1244
1739
client.name)
1245
1740
if self.server.use_dbus:
1246
1741
# Emit D-Bus signal
1247
client.Rejected("Disabled")
1742
client.Rejected("Disabled")
1248
1743
return
1249
1744
1250
if client._approved or not client.approval_delay:
1745
if client.approved or not client.approval_delay:
1251
1746
#We are approved or approval is disabled
1252
1747
break
1253
elif client._approved is None:
1254
logger.info(u"Client %s needs approval",
1748
elif client.approved is None:
1749
logger.info("Client %s needs approval",
1255
1750
client.name)
1256
1751
if self.server.use_dbus:
1257
1752
# Emit D-Bus signal
1259
1754
client.approval_delay_milliseconds(),
1260
1755
client.approved_by_default)
1261
1756
else:
1262
logger.warning(u"Client %s was not approved",
1757
logger.warning("Client %s was not approved",
1263
1758
client.name)
1264
1759
if self.server.use_dbus:
1265
1760
# Emit D-Bus signal
1267
1762
return
1268
1763
1269
1764
#wait until timeout or approved
1270
#x = float(client._timedelta_to_milliseconds(delay))
1271
1765
time = datetime.datetime.now()
1272
1766
client.changedstate.acquire()
1273
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
1767
client.changedstate.wait(
1768
float(timedelta_to_milliseconds(delay)
1769
/ 1000))
1274
1770
client.changedstate.release()
1275
1771
time2 = datetime.datetime.now()
1276
1772
if (time2 - time) >= delay:
1291
1787
while sent_size < len(client.secret):
1292
1788
try:
1293
1789
sent = session.send(client.secret[sent_size:])
1294
except (gnutls.errors.GNUTLSError), error:
1295
logger.warning("gnutls send failed")
1790
except gnutls.errors.GNUTLSError as error:
1791
logger.warning("gnutls send failed",
1792
exc_info=error)
1296
1793
return
1297
logger.debug(u"Sent: %d, remaining: %d",
1794
logger.debug("Sent: %d, remaining: %d",
1298
1795
sent, len(client.secret)
1299
1796
- (sent_size + sent))
1300
1797
sent_size += sent
1301
1302
logger.info(u"Sending secret to %s", client.name)
1303
# bump the timeout as if seen
1304
client.checked_ok()
1798
1799
logger.info("Sending secret to %s", client.name)
1800
# bump the timeout using extended_timeout
1801
client.bump_timeout(client.extended_timeout)
1305
1802
if self.server.use_dbus:
1306
1803
# Emit D-Bus signal
1307
1804
client.GotSecret()
1311
1808
client.approvals_pending -= 1
1312
1809
try:
1313
1810
session.bye()
1314
except (gnutls.errors.GNUTLSError), error:
1315
logger.warning("GnuTLS bye failed")
1811
except gnutls.errors.GNUTLSError as error:
1812
logger.warning("GnuTLS bye failed",
1813
exc_info=error)
1316
1814
1317
1815
@staticmethod
1318
1816
def peer_certificate(session):
1328
1826
.gnutls_certificate_get_peers
1329
1827
(session._c_object, ctypes.byref(list_size)))
1330
1828
if not bool(cert_list) and list_size.value != 0:
1331
raise gnutls.errors.GNUTLSError(u"error getting peer"
1332
u" certificate")
1829
raise gnutls.errors.GNUTLSError("error getting peer"
1830
" certificate")
1333
1831
if list_size.value == 0:
1334
1832
return None
1335
1833
cert = cert_list[0]
1361
1859
if crtverify.value != 0:
1362
1860
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1363
1861
raise (gnutls.errors.CertificateSecurityError
1364
(u"Verify failed"))
1862
("Verify failed"))
1365
1863
# New buffer for the fingerprint
1366
1864
buf = ctypes.create_string_buffer(20)
1367
1865
buf_len = ctypes.c_size_t()
1374
1872
# Convert the buffer to a Python bytestring
1375
1873
fpr = ctypes.string_at(buf, buf_len.value)
1376
1874
# Convert the bytestring to hexadecimal notation
1377
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1875
hex_fpr = binascii.hexlify(fpr).upper()
1378
1876
return hex_fpr
1379
1877
1380
1878
1383
1881
def sub_process_main(self, request, address):
1384
1882
try:
1385
1883
self.finish_request(request, address)
1386
except:
1884
except Exception:
1387
1885
self.handle_error(request, address)
1388
1886
self.close_request(request)
1389
1887
1390
1888
def process_request(self, request, address):
1391
1889
"""Start a new process to process the request."""
1392
multiprocessing.Process(target = self.sub_process_main,
1393
args = (request, address)).start()
1890
proc = multiprocessing.Process(target = self.sub_process_main,
1891
args = (request, address))
1892
proc.start()
1893
return proc
1894
1394
1895
1395
1896
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1396
1897
""" adds a pipe to the MixIn """
1400
1901
This function creates a new pipe in self.pipe
1401
1902
"""
1402
1903
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1403
1404
super(MultiprocessingMixInWithPipe,
1405
self).process_request(request, client_address)
1904
1905
proc = MultiprocessingMixIn.process_request(self, request,
1906
client_address)
1406
1907
self.child_pipe.close()
1407
self.add_pipe(parent_pipe)
1408
1409
def add_pipe(self, parent_pipe):
1908
self.add_pipe(parent_pipe, proc)
1909
1910
def add_pipe(self, parent_pipe, proc):
1410
1911
"""Dummy function; override as necessary"""
1411
pass
1912
raise NotImplementedError
1913
1412
1914
1413
1915
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1414
1916
socketserver.TCPServer, object):
1420
1922
use_ipv6: Boolean; to use IPv6 or not
1421
1923
"""
1422
1924
def __init__(self, server_address, RequestHandlerClass,
1423
interface=None, use_ipv6=True):
1925
interface=None, use_ipv6=True, socketfd=None):
1926
"""If socketfd is set, use that file descriptor instead of
1927
creating a new one with socket.socket().
1928
"""
1424
1929
self.interface = interface
1425
1930
if use_ipv6:
1426
1931
self.address_family = socket.AF_INET6
1932
if socketfd is not None:
1933
# Save the file descriptor
1934
self.socketfd = socketfd
1935
# Save the original socket.socket() function
1936
self.socket_socket = socket.socket
1937
# To implement --socket, we monkey patch socket.socket.
1938
#
1939
# (When socketserver.TCPServer is a new-style class, we
1940
# could make self.socket into a property instead of monkey
1941
# patching socket.socket.)
1942
#
1943
# Create a one-time-only replacement for socket.socket()
1944
@functools.wraps(socket.socket)
1945
def socket_wrapper(*args, **kwargs):
1946
# Restore original function so subsequent calls are
1947
# not affected.
1948
socket.socket = self.socket_socket
1949
del self.socket_socket
1950
# This time only, return a new socket object from the
1951
# saved file descriptor.
1952
return socket.fromfd(self.socketfd, *args, **kwargs)
1953
# Replace socket.socket() function with wrapper
1954
socket.socket = socket_wrapper
1955
# The socketserver.TCPServer.__init__ will call
1956
# socket.socket(), which might be our replacement,
1957
# socket_wrapper(), if socketfd was set.
1427
1958
socketserver.TCPServer.__init__(self, server_address,
1428
1959
RequestHandlerClass)
1960
1429
1961
def server_bind(self):
1430
1962
"""This overrides the normal server_bind() function
1431
1963
to bind to an interface if one was specified, and also NOT to
1432
1964
bind to an address or port if they were not specified."""
1433
1965
if self.interface is not None:
1434
1966
if SO_BINDTODEVICE is None:
1435
logger.error(u"SO_BINDTODEVICE does not exist;"
1436
u" cannot bind to interface %s",
1967
logger.error("SO_BINDTODEVICE does not exist;"
1968
" cannot bind to interface %s",
1437
1969
self.interface)
1438
1970
else:
1439
1971
try:
1440
1972
self.socket.setsockopt(socket.SOL_SOCKET,
1441
1973
SO_BINDTODEVICE,
1442
str(self.interface
1443
+ u'\0'))
1444
except socket.error, error:
1445
if error[0] == errno.EPERM:
1446
logger.error(u"No permission to"
1447
u" bind to interface %s",
1448
self.interface)
1449
elif error[0] == errno.ENOPROTOOPT:
1450
logger.error(u"SO_BINDTODEVICE not available;"
1451
u" cannot bind to interface %s",
1452
self.interface)
1974
str(self.interface + '\0'))
1975
except socket.error as error:
1976
if error.errno == errno.EPERM:
1977
logger.error("No permission to bind to"
1978
" interface %s", self.interface)
1979
elif error.errno == errno.ENOPROTOOPT:
1980
logger.error("SO_BINDTODEVICE not available;"
1981
" cannot bind to interface %s",
1982
self.interface)
1983
elif error.errno == errno.ENODEV:
1984
logger.error("Interface %s does not exist,"
1985
" cannot bind", self.interface)
1453
1986
else:
1454
1987
raise
1455
1988
# Only bind(2) the socket if we really need to.
1456
1989
if self.server_address[0] or self.server_address[1]:
1457
1990
if not self.server_address[0]:
1458
1991
if self.address_family == socket.AF_INET6:
1459
any_address = u"::" # in6addr_any
1992
any_address = "::" # in6addr_any
1460
1993
else:
1461
any_address = socket.INADDR_ANY
1994
any_address = "0.0.0.0" # INADDR_ANY
1462
1995
self.server_address = (any_address,
1463
1996
self.server_address[1])
1464
1997
elif not self.server_address[1]:
1485
2018
"""
1486
2019
def __init__(self, server_address, RequestHandlerClass,
1487
2020
interface=None, use_ipv6=True, clients=None,
1488
gnutls_priority=None, use_dbus=True):
2021
gnutls_priority=None, use_dbus=True, socketfd=None):
1489
2022
self.enabled = False
1490
2023
self.clients = clients
1491
2024
if self.clients is None:
1492
self.clients = set()
2025
self.clients = {}
1493
2026
self.use_dbus = use_dbus
1494
2027
self.gnutls_priority = gnutls_priority
1495
2028
IPv6_TCPServer.__init__(self, server_address,
1496
2029
RequestHandlerClass,
1497
2030
interface = interface,
1498
use_ipv6 = use_ipv6)
2031
use_ipv6 = use_ipv6,
2032
socketfd = socketfd)
1499
2033
def server_activate(self):
1500
2034
if self.enabled:
1501
2035
return socketserver.TCPServer.server_activate(self)
2036
1502
2037
def enable(self):
1503
2038
self.enabled = True
1504
def add_pipe(self, parent_pipe):
2039
2040
def add_pipe(self, parent_pipe, proc):
1505
2041
# Call "handle_ipc" for both data and EOF events
1506
2042
gobject.io_add_watch(parent_pipe.fileno(),
1507
2043
gobject.IO_IN | gobject.IO_HUP,
1508
2044
functools.partial(self.handle_ipc,
1509
parent_pipe = parent_pipe))
1510
2045
parent_pipe =
2046
parent_pipe,
2047
proc = proc))
2048
1511
2049
def handle_ipc(self, source, condition, parent_pipe=None,
1512
client_object=None):
1513
condition_names = {
1514
gobject.IO_IN: u"IN", # There is data to read.
1515
gobject.IO_OUT: u"OUT", # Data can be written (without
1516
# blocking).
1517
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1518
gobject.IO_ERR: u"ERR", # Error condition.
1519
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1520
# broken, usually for pipes and
1521
# sockets).
1522
}
1523
conditions_string = ' | '.join(name
1524
for cond, name in
1525
condition_names.iteritems()
1526
if cond & condition)
1527
# error or the other end of multiprocessing.Pipe has closed
1528
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2050
proc = None, client_object=None):
2051
# error, or the other end of multiprocessing.Pipe has closed
2052
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2053
# Wait for other process to exit
2054
proc.join()
1529
2055
return False
1530
2056
1531
2057
# Read a request from the child
1536
2062
fpr = request[1]
1537
2063
address = request[2]
1538
2064
1539
for c in self.clients:
2065
for c in self.clients.itervalues():
1540
2066
if c.fingerprint == fpr:
1541
2067
client = c
1542
2068
break
1543
2069
else:
1544
logger.warning(u"Client not found for fingerprint: %s, ad"
1545
u"dress: %s", fpr, address)
2070
logger.info("Client not found for fingerprint: %s, ad"
2071
"dress: %s", fpr, address)
1546
2072
if self.use_dbus:
1547
2073
# Emit D-Bus signal
1548
mandos_dbus_service.ClientNotFound(fpr, address[0])
2074
mandos_dbus_service.ClientNotFound(fpr,
2075
address[0])
1549
2076
parent_pipe.send(False)
1550
2077
return False
1551
2078
1552
2079
gobject.io_add_watch(parent_pipe.fileno(),
1553
2080
gobject.IO_IN | gobject.IO_HUP,
1554
2081
functools.partial(self.handle_ipc,
1555
parent_pipe = parent_pipe,
1556
client_object = client))
2082
parent_pipe =
2083
parent_pipe,
2084
proc = proc,
2085
client_object =
2086
client))
1557
2087
parent_pipe.send(True)
1558
# remove the old hook in favor of the new above hook on same fileno
2088
# remove the old hook in favor of the new above hook on
2089
# same fileno
1559
2090
return False
1560
2091
if command == 'funcall':
1561
2092
funcname = request[1]
1562
2093
args = request[2]
1563
2094
kwargs = request[3]
1564
2095
1565
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
1566
2096
parent_pipe.send(('data', getattr(client_object,
2097
funcname)(*args,
2098
**kwargs)))
2099
1567
2100
if command == 'getattr':
1568
2101
attrname = request[1]
1569
2102
if callable(client_object.__getattribute__(attrname)):
1570
2103
parent_pipe.send(('function',))
1571
2104
else:
1572
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
2105
parent_pipe.send(('data', client_object
2106
.__getattribute__(attrname)))
1573
2107
1574
2108
if command == 'setattr':
1575
2109
attrname = request[1]
1576
2110
value = request[2]
1577
2111
setattr(client_object, attrname, value)
1578
2112
1579
2113
return True
1580
2114
1581
2115
2116
def rfc3339_duration_to_delta(duration):
2117
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2118
2119
>>> rfc3339_duration_to_delta("P7D")
2120
datetime.timedelta(7)
2121
>>> rfc3339_duration_to_delta("PT60S")
2122
datetime.timedelta(0, 60)
2123
>>> rfc3339_duration_to_delta("PT60M")
2124
datetime.timedelta(0, 3600)
2125
>>> rfc3339_duration_to_delta("PT24H")
2126
datetime.timedelta(1)
2127
>>> rfc3339_duration_to_delta("P1W")
2128
datetime.timedelta(7)
2129
>>> rfc3339_duration_to_delta("PT5M30S")
2130
datetime.timedelta(0, 330)
2131
>>> rfc3339_duration_to_delta("P1DT3M20S")
2132
datetime.timedelta(1, 200)
2133
"""
2134
2135
# Parsing an RFC 3339 duration with regular expressions is not
2136
# possible - there would have to be multiple places for the same
2137
# values, like seconds. The current code, while more esoteric, is
2138
# cleaner without depending on a parsing library. If Python had a
2139
# built-in library for parsing we would use it, but we'd like to
2140
# avoid excessive use of external libraries.
2141
2142
# New type for defining tokens, syntax, and semantics all-in-one
2143
Token = collections.namedtuple("Token",
2144
("regexp", # To match token; if
2145
# "value" is not None,
2146
# must have a "group"
2147
# containing digits
2148
"value", # datetime.timedelta or
2149
# None
2150
"followers")) # Tokens valid after
2151
# this token
2152
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2153
# the "duration" ABNF definition in RFC 3339, Appendix A.
2154
token_end = Token(re.compile(r"$"), None, frozenset())
2155
token_second = Token(re.compile(r"(\d+)S"),
2156
datetime.timedelta(seconds=1),
2157
frozenset((token_end,)))
2158
token_minute = Token(re.compile(r"(\d+)M"),
2159
datetime.timedelta(minutes=1),
2160
frozenset((token_second, token_end)))
2161
token_hour = Token(re.compile(r"(\d+)H"),
2162
datetime.timedelta(hours=1),
2163
frozenset((token_minute, token_end)))
2164
token_time = Token(re.compile(r"T"),
2165
None,
2166
frozenset((token_hour, token_minute,
2167
token_second)))
2168
token_day = Token(re.compile(r"(\d+)D"),
2169
datetime.timedelta(days=1),
2170
frozenset((token_time, token_end)))
2171
token_month = Token(re.compile(r"(\d+)M"),
2172
datetime.timedelta(weeks=4),
2173
frozenset((token_day, token_end)))
2174
token_year = Token(re.compile(r"(\d+)Y"),
2175
datetime.timedelta(weeks=52),
2176
frozenset((token_month, token_end)))
2177
token_week = Token(re.compile(r"(\d+)W"),
2178
datetime.timedelta(weeks=1),
2179
frozenset((token_end,)))
2180
token_duration = Token(re.compile(r"P"), None,
2181
frozenset((token_year, token_month,
2182
token_day, token_time,
2183
token_week))),
2184
# Define starting values
2185
value = datetime.timedelta() # Value so far
2186
found_token = None
2187
followers = frozenset(token_duration,) # Following valid tokens
2188
s = duration # String left to parse
2189
# Loop until end token is found
2190
while found_token is not token_end:
2191
# Search for any currently valid tokens
2192
for token in followers:
2193
match = token.regexp.match(s)
2194
if match is not None:
2195
# Token found
2196
if token.value is not None:
2197
# Value found, parse digits
2198
factor = int(match.group(1), 10)
2199
# Add to value so far
2200
value += factor * token.value
2201
# Strip token from string
2202
s = token.regexp.sub("", s, 1)
2203
# Go to found token
2204
found_token = token
2205
# Set valid next tokens
2206
followers = found_token.followers
2207
break
2208
else:
2209
# No currently valid tokens were found
2210
raise ValueError("Invalid RFC 3339 duration")
2211
# End token found
2212
return value
2213
2214
1582
2215
def string_to_delta(interval):
1583
2216
"""Parse a string and return a datetime.timedelta
1584
2217
1585
>>> string_to_delta(u'7d')
2218
>>> string_to_delta('7d')
1586
2219
datetime.timedelta(7)
1587
>>> string_to_delta(u'60s')
2220
>>> string_to_delta('60s')
1588
2221
datetime.timedelta(0, 60)
1589
>>> string_to_delta(u'60m')
2222
>>> string_to_delta('60m')
1590
2223
datetime.timedelta(0, 3600)
1591
>>> string_to_delta(u'24h')
2224
>>> string_to_delta('24h')
1592
2225
datetime.timedelta(1)
1593
>>> string_to_delta(u'1w')
2226
>>> string_to_delta('1w')
1594
2227
datetime.timedelta(7)
1595
>>> string_to_delta(u'5m 30s')
2228
>>> string_to_delta('5m 30s')
1596
2229
datetime.timedelta(0, 330)
1597
2230
"""
2231
2232
try:
2233
return rfc3339_duration_to_delta(interval)
2234
except ValueError:
2235
pass
2236
1598
2237
timevalue = datetime.timedelta(0)
1599
2238
for s in interval.split():
1600
2239
try:
1601
2240
suffix = unicode(s[-1])
1602
2241
value = int(s[:-1])
1603
if suffix == u"d":
2242
if suffix == "d":
1604
2243
delta = datetime.timedelta(value)
1605
elif suffix == u"s":
2244
elif suffix == "s":
1606
2245
delta = datetime.timedelta(0, value)
1607
elif suffix == u"m":
2246
elif suffix == "m":
1608
2247
delta = datetime.timedelta(0, 0, 0, 0, value)
1609
elif suffix == u"h":
2248
elif suffix == "h":
1610
2249
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1611
elif suffix == u"w":
2250
elif suffix == "w":
1612
2251
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1613
2252
else:
1614
raise ValueError(u"Unknown suffix %r" % suffix)
1615
except (ValueError, IndexError), e:
1616
raise ValueError(e.message)
2253
raise ValueError("Unknown suffix {0!r}"
2254
.format(suffix))
2255
except (ValueError, IndexError) as e:
2256
raise ValueError(*(e.args))
1617
2257
timevalue += delta
1618
2258
return timevalue
1619
2259
1620
2260
1621
def if_nametoindex(interface):
1622
"""Call the C function if_nametoindex(), or equivalent
1623
1624
Note: This function cannot accept a unicode string."""
1625
global if_nametoindex
1626
try:
1627
if_nametoindex = (ctypes.cdll.LoadLibrary
1628
(ctypes.util.find_library(u"c"))
1629
.if_nametoindex)
1630
except (OSError, AttributeError):
1631
logger.warning(u"Doing if_nametoindex the hard way")
1632
def if_nametoindex(interface):
1633
"Get an interface index the hard way, i.e. using fcntl()"
1634
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1635
with contextlib.closing(socket.socket()) as s:
1636
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1637
struct.pack(str(u"16s16x"),
1638
interface))
1639
interface_index = struct.unpack(str(u"I"),
1640
ifreq[16:20])[0]
1641
return interface_index
1642
return if_nametoindex(interface)
1643
1644
1645
2261
def daemon(nochdir = False, noclose = False):
1646
2262
"""See daemon(3). Standard BSD Unix function.
1647
2263
1650
2266
sys.exit()
1651
2267
os.setsid()
1652
2268
if not nochdir:
1653
os.chdir(u"/")
2269
os.chdir("/")
1654
2270
if os.fork():
1655
2271
sys.exit()
1656
2272
if not noclose:
1657
2273
# Close all standard open file descriptors
1658
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2274
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1659
2275
if not stat.S_ISCHR(os.fstat(null).st_mode):
1660
2276
raise OSError(errno.ENODEV,
1661
u"%s not a character device"
1662
% os.path.devnull)
2277
"{0} not a character device"
2278
.format(os.devnull))
1663
2279
os.dup2(null, sys.stdin.fileno())
1664
2280
os.dup2(null, sys.stdout.fileno())
1665
2281
os.dup2(null, sys.stderr.fileno())
1672
2288
##################################################################
1673
2289
# Parsing of options, both command line and config file
1674
2290
1675
parser = optparse.OptionParser(version = "%%prog %s" % version)
1676
parser.add_option("-i", u"--interface", type=u"string",
1677
metavar="IF", help=u"Bind to interface IF")
1678
parser.add_option("-a", u"--address", type=u"string",
1679
help=u"Address to listen for requests on")
1680
parser.add_option("-p", u"--port", type=u"int",
1681
help=u"Port number to receive requests on")
1682
parser.add_option("--check", action=u"store_true",
1683
help=u"Run self-test")
1684
parser.add_option("--debug", action=u"store_true",
1685
help=u"Debug mode; run in foreground and log to"
1686
u" terminal")
1687
parser.add_option("--debuglevel", type=u"string", metavar="LEVEL",
1688
help=u"Debug level for stdout output")
1689
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1690
u" priority string (see GnuTLS documentation)")
1691
parser.add_option("--servicename", type=u"string",
1692
metavar=u"NAME", help=u"Zeroconf service name")
1693
parser.add_option("--configdir", type=u"string",
1694
default=u"/etc/mandos", metavar=u"DIR",
1695
help=u"Directory to search for configuration"
1696
u" files")
1697
parser.add_option("--no-dbus", action=u"store_false",
1698
dest=u"use_dbus", help=u"Do not provide D-Bus"
1699
u" system bus interface")
1700
parser.add_option("--no-ipv6", action=u"store_false",
1701
dest=u"use_ipv6", help=u"Do not use IPv6")
1702
options = parser.parse_args()[0]
2291
parser = argparse.ArgumentParser()
2292
parser.add_argument("-v", "--version", action="version",
2293
version = "%(prog)s {0}".format(version),
2294
help="show version number and exit")
2295
parser.add_argument("-i", "--interface", metavar="IF",
2296
help="Bind to interface IF")
2297
parser.add_argument("-a", "--address",
2298
help="Address to listen for requests on")
2299
parser.add_argument("-p", "--port", type=int,
2300
help="Port number to receive requests on")
2301
parser.add_argument("--check", action="store_true",
2302
help="Run self-test")
2303
parser.add_argument("--debug", action="store_true",
2304
help="Debug mode; run in foreground and log"
2305
" to terminal", default=None)
2306
parser.add_argument("--debuglevel", metavar="LEVEL",
2307
help="Debug level for stdout output")
2308
parser.add_argument("--priority", help="GnuTLS"
2309
" priority string (see GnuTLS documentation)")
2310
parser.add_argument("--servicename",
2311
metavar="NAME", help="Zeroconf service name")
2312
parser.add_argument("--configdir",
2313
default="/etc/mandos", metavar="DIR",
2314
help="Directory to search for configuration"
2315
" files")
2316
parser.add_argument("--no-dbus", action="store_false",
2317
dest="use_dbus", help="Do not provide D-Bus"
2318
" system bus interface", default=None)
2319
parser.add_argument("--no-ipv6", action="store_false",
2320
dest="use_ipv6", help="Do not use IPv6",
2321
default=None)
2322
parser.add_argument("--no-restore", action="store_false",
2323
dest="restore", help="Do not restore stored"
2324
" state", default=None)
2325
parser.add_argument("--socket", type=int,
2326
help="Specify a file descriptor to a network"
2327
" socket to use instead of creating one")
2328
parser.add_argument("--statedir", metavar="DIR",
2329
help="Directory to save/restore state in")
2330
parser.add_argument("--foreground", action="store_true",
2331
help="Run in foreground", default=None)
2332
2333
options = parser.parse_args()
1703
2334
1704
2335
if options.check:
1705
2336
import doctest
1707
2338
sys.exit()
1708
2339
1709
2340
# Default values for config file for server-global settings
1710
server_defaults = { u"interface": u"",
1711
u"address": u"",
1712
u"port": u"",
1713
u"debug": u"False",
1714
u"priority":
1715
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1716
u"servicename": u"Mandos",
1717
u"use_dbus": u"True",
1718
u"use_ipv6": u"True",
1719
u"debuglevel": u"",
2341
server_defaults = { "interface": "",
2342
"address": "",
2343
"port": "",
2344
"debug": "False",
2345
"priority":
2346
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:+SIGN-RSA-SHA224",
2347
"servicename": "Mandos",
2348
"use_dbus": "True",
2349
"use_ipv6": "True",
2350
"debuglevel": "",
2351
"restore": "True",
2352
"socket": "",
2353
"statedir": "/var/lib/mandos",
2354
"foreground": "False",
1720
2355
}
1721
2356
1722
2357
# Parse config file for server-global settings
1723
2358
server_config = configparser.SafeConfigParser(server_defaults)
1724
2359
del server_defaults
1725
2360
server_config.read(os.path.join(options.configdir,
1726
u"mandos.conf"))
2361
"mandos.conf"))
1727
2362
# Convert the SafeConfigParser object to a dict
1728
2363
server_settings = server_config.defaults()
1729
2364
# Use the appropriate methods on the non-string config options
1730
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1731
server_settings[option] = server_config.getboolean(u"DEFAULT",
2365
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
2366
server_settings[option] = server_config.getboolean("DEFAULT",
1732
2367
option)
1733
2368
if server_settings["port"]:
1734
server_settings["port"] = server_config.getint(u"DEFAULT",
1735
u"port")
2369
server_settings["port"] = server_config.getint("DEFAULT",
2370
"port")
2371
if server_settings["socket"]:
2372
server_settings["socket"] = server_config.getint("DEFAULT",
2373
"socket")
2374
# Later, stdin will, and stdout and stderr might, be dup'ed
2375
# over with an opened os.devnull. But we don't want this to
2376
# happen with a supplied network socket.
2377
if 0 <= server_settings["socket"] <= 2:
2378
server_settings["socket"] = os.dup(server_settings
2379
["socket"])
1736
2380
del server_config
1737
2381
1738
2382
# Override the settings from the config file with command line
1739
2383
# options, if set.
1740
for option in (u"interface", u"address", u"port", u"debug",
1741
u"priority", u"servicename", u"configdir",
1742
u"use_dbus", u"use_ipv6", u"debuglevel"):
2384
for option in ("interface", "address", "port", "debug",
2385
"priority", "servicename", "configdir",
2386
"use_dbus", "use_ipv6", "debuglevel", "restore",
2387
"statedir", "socket", "foreground"):
1743
2388
value = getattr(options, option)
1744
2389
if value is not None:
1745
2390
server_settings[option] = value
1748
2393
for option in server_settings.keys():
1749
2394
if type(server_settings[option]) is str:
1750
2395
server_settings[option] = unicode(server_settings[option])
2396
# Force all boolean options to be boolean
2397
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2398
"foreground"):
2399
server_settings[option] = bool(server_settings[option])
2400
# Debug implies foreground
2401
if server_settings["debug"]:
2402
server_settings["foreground"] = True
1751
2403
# Now we have our good server settings in "server_settings"
1752
2404
1753
2405
##################################################################
1754
2406
1755
2407
# For convenience
1756
debug = server_settings[u"debug"]
1757
debuglevel = server_settings[u"debuglevel"]
1758
use_dbus = server_settings[u"use_dbus"]
1759
use_ipv6 = server_settings[u"use_ipv6"]
1760
1761
if server_settings[u"servicename"] != u"Mandos":
2408
debug = server_settings["debug"]
2409
debuglevel = server_settings["debuglevel"]
2410
use_dbus = server_settings["use_dbus"]
2411
use_ipv6 = server_settings["use_ipv6"]
2412
stored_state_path = os.path.join(server_settings["statedir"],
2413
stored_state_file)
2414
foreground = server_settings["foreground"]
2415
2416
if debug:
2417
initlogger(debug, logging.DEBUG)
2418
else:
2419
if not debuglevel:
2420
initlogger(debug)
2421
else:
2422
level = getattr(logging, debuglevel.upper())
2423
initlogger(debug, level)
2424
2425
if server_settings["servicename"] != "Mandos":
1762
2426
syslogger.setFormatter(logging.Formatter
1763
(u'Mandos (%s) [%%(process)d]:'
1764
u' %%(levelname)s: %%(message)s'
1765
% server_settings[u"servicename"]))
2427
('Mandos ({0}) [%(process)d]:'
2428
' %(levelname)s: %(message)s'
2429
.format(server_settings
2430
["servicename"])))
1766
2431
1767
2432
# Parse config file with clients
1768
client_defaults = { u"timeout": u"1h",
1769
u"interval": u"5m",
1770
u"checker": u"fping -q -- %%(host)s",
1771
u"host": u"",
1772
u"approval_delay": u"0s",
1773
u"approval_duration": u"1s",
1774
}
1775
client_config = configparser.SafeConfigParser(client_defaults)
1776
client_config.read(os.path.join(server_settings[u"configdir"],
1777
u"clients.conf"))
2433
client_config = configparser.SafeConfigParser(Client
2434
.client_defaults)
2435
client_config.read(os.path.join(server_settings["configdir"],
2436
"clients.conf"))
1778
2437
1779
2438
global mandos_dbus_service
1780
2439
mandos_dbus_service = None
1781
2440
1782
tcp_server = MandosServer((server_settings[u"address"],
1783
server_settings[u"port"]),
2441
tcp_server = MandosServer((server_settings["address"],
2442
server_settings["port"]),
1784
2443
ClientHandler,
1785
interface=(server_settings[u"interface"]
2444
interface=(server_settings["interface"]
1786
2445
or None),
1787
2446
use_ipv6=use_ipv6,
1788
2447
gnutls_priority=
1789
server_settings[u"priority"],
1790
use_dbus=use_dbus)
1791
if not debug:
1792
pidfilename = u"/var/run/mandos.pid"
2448
server_settings["priority"],
2449
use_dbus=use_dbus,
2450
socketfd=(server_settings["socket"]
2451
or None))
2452
if not foreground:
2453
pidfilename = "/var/run/mandos.pid"
2454
pidfile = None
1793
2455
try:
1794
pidfile = open(pidfilename, u"w")
1795
except IOError:
1796
logger.error(u"Could not open file %r", pidfilename)
2456
pidfile = open(pidfilename, "w")
2457
except IOError as e:
2458
logger.error("Could not open file %r", pidfilename,
2459
exc_info=e)
1797
2460
1798
try:
1799
uid = pwd.getpwnam(u"_mandos").pw_uid
1800
gid = pwd.getpwnam(u"_mandos").pw_gid
1801
except KeyError:
2461
for name in ("_mandos", "mandos", "nobody"):
1802
2462
try:
1803
uid = pwd.getpwnam(u"mandos").pw_uid
1804
gid = pwd.getpwnam(u"mandos").pw_gid
2463
uid = pwd.getpwnam(name).pw_uid
2464
gid = pwd.getpwnam(name).pw_gid
2465
break
1805
2466
except KeyError:
1806
try:
1807
uid = pwd.getpwnam(u"nobody").pw_uid
1808
gid = pwd.getpwnam(u"nobody").pw_gid
1809
except KeyError:
1810
uid = 65534
1811
gid = 65534
2467
continue
2468
else:
2469
uid = 65534
2470
gid = 65534
1812
2471
try:
1813
2472
os.setgid(gid)
1814
2473
os.setuid(uid)
1815
except OSError, error:
1816
if error[0] != errno.EPERM:
2474
except OSError as error:
2475
if error.errno != errno.EPERM:
1817
2476
raise error
1818
2477
1819
if not debug and not debuglevel:
1820
syslogger.setLevel(logging.WARNING)
1821
console.setLevel(logging.WARNING)
1822
if debuglevel:
1823
level = getattr(logging, debuglevel.upper())
1824
syslogger.setLevel(level)
1825
console.setLevel(level)
1826
1827
2478
if debug:
1828
2479
# Enable all possible GnuTLS debugging
1829
2480
1833
2484
1834
2485
@gnutls.library.types.gnutls_log_func
1835
2486
def debug_gnutls(level, string):
1836
logger.debug(u"GnuTLS: %s", string[:-1])
2487
logger.debug("GnuTLS: %s", string[:-1])
1837
2488
1838
2489
(gnutls.library.functions
1839
2490
.gnutls_global_set_log_function(debug_gnutls))
1840
2491
1841
2492
# Redirect stdin so all checkers get /dev/null
1842
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2493
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1843
2494
os.dup2(null, sys.stdin.fileno())
1844
2495
if null > 2:
1845
2496
os.close(null)
1846
else:
1847
# No console logging
1848
logger.removeHandler(console)
1849
2497
2498
# Need to fork before connecting to D-Bus
2499
if not foreground:
2500
# Close all input and output, do double fork, etc.
2501
daemon()
2502
2503
# multiprocessing will use threads, so before we use gobject we
2504
# need to inform gobject that threads will be used.
2505
gobject.threads_init()
1850
2506
1851
2507
global main_loop
1852
2508
# From the Avahi example code
1853
DBusGMainLoop(set_as_default=True )
2509
DBusGMainLoop(set_as_default=True)
1854
2510
main_loop = gobject.MainLoop()
1855
2511
bus = dbus.SystemBus()
1856
2512
# End of Avahi example code
1857
2513
if use_dbus:
1858
2514
try:
1859
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
2515
bus_name = dbus.service.BusName("se.recompile.Mandos",
1860
2516
bus, do_not_queue=True)
1861
except dbus.exceptions.NameExistsException, e:
1862
logger.error(unicode(e) + u", disabling D-Bus")
2517
old_bus_name = (dbus.service.BusName
2518
("se.bsnet.fukt.Mandos", bus,
2519
do_not_queue=True))
2520
except dbus.exceptions.NameExistsException as e:
2521
logger.error("Disabling D-Bus:", exc_info=e)
1863
2522
use_dbus = False
1864
server_settings[u"use_dbus"] = False
2523
server_settings["use_dbus"] = False
1865
2524
tcp_server.use_dbus = False
1866
2525
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1867
service = AvahiService(name = server_settings[u"servicename"],
1868
servicetype = u"_mandos._tcp",
1869
protocol = protocol, bus = bus)
2526
service = AvahiServiceToSyslog(name =
2527
server_settings["servicename"],
2528
servicetype = "_mandos._tcp",
2529
protocol = protocol, bus = bus)
1870
2530
if server_settings["interface"]:
1871
2531
service.interface = (if_nametoindex
1872
(str(server_settings[u"interface"])))
1873
1874
if not debug:
1875
# Close all input and output, do double fork, etc.
1876
daemon()
1877
2532
(str(server_settings["interface"])))
2533
1878
2534
global multiprocessing_manager
1879
2535
multiprocessing_manager = multiprocessing.Manager()
1880
2536
1881
2537
client_class = Client
1882
2538
if use_dbus:
1883
2539
client_class = functools.partial(ClientDBus, bus = bus)
1884
def client_config_items(config, section):
1885
special_settings = {
1886
"approved_by_default":
1887
lambda: config.getboolean(section,
1888
"approved_by_default"),
1889
}
1890
for name, value in config.items(section):
2540
2541
client_settings = Client.config_parser(client_config)
2542
old_client_settings = {}
2543
clients_data = {}
2544
2545
# This is used to redirect stdout and stderr for checker processes
2546
global wnull
2547
wnull = open(os.devnull, "w") # A writable /dev/null
2548
# Only used if server is running in foreground but not in debug
2549
# mode
2550
if debug or not foreground:
2551
wnull.close()
2552
2553
# Get client data and settings from last running state.
2554
if server_settings["restore"]:
2555
try:
2556
with open(stored_state_path, "rb") as stored_state:
2557
clients_data, old_client_settings = (pickle.load
2558
(stored_state))
2559
os.remove(stored_state_path)
2560
except IOError as e:
2561
if e.errno == errno.ENOENT:
2562
logger.warning("Could not load persistent state: {0}"
2563
.format(os.strerror(e.errno)))
2564
else:
2565
logger.critical("Could not load persistent state:",
2566
exc_info=e)
2567
raise
2568
except EOFError as e:
2569
logger.warning("Could not load persistent state: "
2570
"EOFError:", exc_info=e)
2571
2572
with PGPEngine() as pgp:
2573
for client_name, client in clients_data.iteritems():
2574
# Skip removed clients
2575
if client_name not in client_settings:
2576
continue
2577
2578
# Decide which value to use after restoring saved state.
2579
# We have three different values: Old config file,
2580
# new config file, and saved state.
2581
# New config value takes precedence if it differs from old
2582
# config value, otherwise use saved state.
2583
for name, value in client_settings[client_name].items():
2584
try:
2585
# For each value in new config, check if it
2586
# differs from the old config value (Except for
2587
# the "secret" attribute)
2588
if (name != "secret" and
2589
value != old_client_settings[client_name]
2590
[name]):
2591
client[name] = value
2592
except KeyError:
2593
pass
2594
2595
# Clients who has passed its expire date can still be
2596
# enabled if its last checker was successful. Clients
2597
# whose checker succeeded before we stored its state is
2598
# assumed to have successfully run all checkers during
2599
# downtime.
2600
if client["enabled"]:
2601
if datetime.datetime.utcnow() >= client["expires"]:
2602
if not client["last_checked_ok"]:
2603
logger.warning(
2604
"disabling client {0} - Client never "
2605
"performed a successful checker"
2606
.format(client_name))
2607
client["enabled"] = False
2608
elif client["last_checker_status"] != 0:
2609
logger.warning(
2610
"disabling client {0} - Client "
2611
"last checker failed with error code {1}"
2612
.format(client_name,
2613
client["last_checker_status"]))
2614
client["enabled"] = False
2615
else:
2616
client["expires"] = (datetime.datetime
2617
.utcnow()
2618
+ client["timeout"])
2619
logger.debug("Last checker succeeded,"
2620
" keeping {0} enabled"
2621
.format(client_name))
1891
2622
try:
1892
yield (name, special_settings[name]())
1893
except KeyError:
1894
yield (name, value)
1895
1896
tcp_server.clients.update(set(
1897
client_class(name = section,
1898
config= dict(client_config_items(
1899
client_config, section)))
1900
for section in client_config.sections()))
2623
client["secret"] = (
2624
pgp.decrypt(client["encrypted_secret"],
2625
client_settings[client_name]
2626
["secret"]))
2627
except PGPError:
2628
# If decryption fails, we use secret from new settings
2629
logger.debug("Failed to decrypt {0} old secret"
2630
.format(client_name))
2631
client["secret"] = (
2632
client_settings[client_name]["secret"])
2633
2634
# Add/remove clients based on new changes made to config
2635
for client_name in (set(old_client_settings)
2636
- set(client_settings)):
2637
del clients_data[client_name]
2638
for client_name in (set(client_settings)
2639
- set(old_client_settings)):
2640
clients_data[client_name] = client_settings[client_name]
2641
2642
# Create all client objects
2643
for client_name, client in clients_data.iteritems():
2644
tcp_server.clients[client_name] = client_class(
2645
name = client_name, settings = client,
2646
server_settings = server_settings)
2647
1901
2648
if not tcp_server.clients:
1902
logger.warning(u"No clients defined")
1903
1904
if not debug:
1905
try:
1906
with pidfile:
1907
pid = os.getpid()
1908
pidfile.write(str(pid) + "\n")
1909
del pidfile
1910
except IOError:
1911
logger.error(u"Could not write to file %r with PID %d",
1912
pidfilename, pid)
1913
except NameError:
1914
# "pidfile" was never created
1915
pass
2649
logger.warning("No clients defined")
2650
2651
if not foreground:
2652
if pidfile is not None:
2653
try:
2654
with pidfile:
2655
pid = os.getpid()
2656
pidfile.write(str(pid) + "\n".encode("utf-8"))
2657
except IOError:
2658
logger.error("Could not write to file %r with PID %d",
2659
pidfilename, pid)
2660
del pidfile
1916
2661
del pidfilename
1917
1918
signal.signal(signal.SIGINT, signal.SIG_IGN)
1919
2662
1920
2663
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1921
2664
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1922
2665
1923
2666
if use_dbus:
1924
class MandosDBusService(dbus.service.Object):
2667
@alternate_dbus_interfaces({"se.recompile.Mandos":
2668
"se.bsnet.fukt.Mandos"})
2669
class MandosDBusService(DBusObjectWithProperties):
1925
2670
"""A D-Bus proxy object"""
1926
2671
def __init__(self):
1927
dbus.service.Object.__init__(self, bus, u"/")
1928
_interface = u"se.bsnet.fukt.Mandos"
1929
1930
@dbus.service.signal(_interface, signature=u"o")
2672
dbus.service.Object.__init__(self, bus, "/")
2673
_interface = "se.recompile.Mandos"
2674
2675
@dbus_interface_annotations(_interface)
2676
def _foo(self):
2677
return { "org.freedesktop.DBus.Property"
2678
".EmitsChangedSignal":
2679
"false"}
2680
2681
@dbus.service.signal(_interface, signature="o")
1931
2682
def ClientAdded(self, objpath):
1932
2683
"D-Bus signal"
1933
2684
pass
1934
2685
1935
@dbus.service.signal(_interface, signature=u"ss")
2686
@dbus.service.signal(_interface, signature="ss")
1936
2687
def ClientNotFound(self, fingerprint, address):
1937
2688
"D-Bus signal"
1938
2689
pass
1939
2690
1940
@dbus.service.signal(_interface, signature=u"os")
2691
@dbus.service.signal(_interface, signature="os")
1941
2692
def ClientRemoved(self, objpath, name):
1942
2693
"D-Bus signal"
1943
2694
pass
1944
2695
1945
@dbus.service.method(_interface, out_signature=u"ao")
2696
@dbus.service.method(_interface, out_signature="ao")
1946
2697
def GetAllClients(self):
1947
2698
"D-Bus method"
1948
2699
return dbus.Array(c.dbus_object_path
1949
for c in tcp_server.clients)
2700
for c in
2701
tcp_server.clients.itervalues())
1950
2702
1951
2703
@dbus.service.method(_interface,
1952
out_signature=u"a{oa{sv}}")
2704
out_signature="a{oa{sv}}")
1953
2705
def GetAllClientsWithProperties(self):
1954
2706
"D-Bus method"
1955
2707
return dbus.Dictionary(
1956
((c.dbus_object_path, c.GetAll(u""))
1957
for c in tcp_server.clients),
1958
signature=u"oa{sv}")
2708
((c.dbus_object_path, c.GetAll(""))
2709
for c in tcp_server.clients.itervalues()),
2710
signature="oa{sv}")
1959
2711
1960
@dbus.service.method(_interface, in_signature=u"o")
2712
@dbus.service.method(_interface, in_signature="o")
1961
2713
def RemoveClient(self, object_path):
1962
2714
"D-Bus method"
1963
for c in tcp_server.clients:
2715
for c in tcp_server.clients.itervalues():
1964
2716
if c.dbus_object_path == object_path:
1965
tcp_server.clients.remove(c)
2717
del tcp_server.clients[c.name]
1966
2718
c.remove_from_connection()
1967
2719
# Don't signal anything except ClientRemoved
1968
2720
c.disable(quiet=True)
1979
2731
"Cleanup function; run on exit"
1980
2732
service.cleanup()
1981
2733
2734
multiprocessing.active_children()
2735
wnull.close()
2736
if not (tcp_server.clients or client_settings):
2737
return
2738
2739
# Store client before exiting. Secrets are encrypted with key
2740
# based on what config file has. If config file is
2741
# removed/edited, old secret will thus be unrecovable.
2742
clients = {}
2743
with PGPEngine() as pgp:
2744
for client in tcp_server.clients.itervalues():
2745
key = client_settings[client.name]["secret"]
2746
client.encrypted_secret = pgp.encrypt(client.secret,
2747
key)
2748
client_dict = {}
2749
2750
# A list of attributes that can not be pickled
2751
# + secret.
2752
exclude = set(("bus", "changedstate", "secret",
2753
"checker", "server_settings"))
2754
for name, typ in (inspect.getmembers
2755
(dbus.service.Object)):
2756
exclude.add(name)
2757
2758
client_dict["encrypted_secret"] = (client
2759
.encrypted_secret)
2760
for attr in client.client_structure:
2761
if attr not in exclude:
2762
client_dict[attr] = getattr(client, attr)
2763
2764
clients[client.name] = client_dict
2765
del client_settings[client.name]["secret"]
2766
2767
try:
2768
with (tempfile.NamedTemporaryFile
2769
(mode='wb', suffix=".pickle", prefix='clients-',
2770
dir=os.path.dirname(stored_state_path),
2771
delete=False)) as stored_state:
2772
pickle.dump((clients, client_settings), stored_state)
2773
tempname=stored_state.name
2774
os.rename(tempname, stored_state_path)
2775
except (IOError, OSError) as e:
2776
if not debug:
2777
try:
2778
os.remove(tempname)
2779
except NameError:
2780
pass
2781
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
2782
logger.warning("Could not save persistent state: {0}"
2783
.format(os.strerror(e.errno)))
2784
else:
2785
logger.warning("Could not save persistent state:",
2786
exc_info=e)
2787
raise e
2788
2789
# Delete all clients, and settings from config
1982
2790
while tcp_server.clients:
1983
client = tcp_server.clients.pop()
2791
name, client = tcp_server.clients.popitem()
1984
2792
if use_dbus:
1985
2793
client.remove_from_connection()
1986
client.disable_hook = None
1987
2794
# Don't signal anything except ClientRemoved
1988
2795
client.disable(quiet=True)
1989
2796
if use_dbus:
1990
2797
# Emit D-Bus signal
1991
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
2798
mandos_dbus_service.ClientRemoved(client
2799
.dbus_object_path,
1992
2800
client.name)
2801
client_settings.clear()
1993
2802
1994
2803
atexit.register(cleanup)
1995
2804
1996
for client in tcp_server.clients:
2805
for client in tcp_server.clients.itervalues():
1997
2806
if use_dbus:
1998
2807
# Emit D-Bus signal
1999
2808
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2000
client.enable()
2809
# Need to initiate checking of clients
2810
if client.enabled:
2811
client.init_checker()
2001
2812
2002
2813
tcp_server.enable()
2003
2814
tcp_server.server_activate()
2005
2816
# Find out what port we got
2006
2817
service.port = tcp_server.socket.getsockname()[1]
2007
2818
if use_ipv6:
2008
logger.info(u"Now listening on address %r, port %d,"
2009
" flowinfo %d, scope_id %d"
2010
% tcp_server.socket.getsockname())
2819
logger.info("Now listening on address %r, port %d,"
2820
" flowinfo %d, scope_id %d",
2821
*tcp_server.socket.getsockname())
2011
2822
else: # IPv4
2012
logger.info(u"Now listening on address %r, port %d"
2013
% tcp_server.socket.getsockname())
2823
logger.info("Now listening on address %r, port %d",
2824
*tcp_server.socket.getsockname())
2014
2825
2015
2826
#service.interface = tcp_server.socket.getsockname()[3]
2016
2827
2018
2829
# From the Avahi example code
2019
2830
try:
2020
2831
service.activate()
2021
except dbus.exceptions.DBusException, error:
2022
logger.critical(u"DBusException: %s", error)
2832
except dbus.exceptions.DBusException as error:
2833
logger.critical("D-Bus Exception", exc_info=error)
2023
2834
cleanup()
2024
2835
sys.exit(1)
2025
2836
# End of Avahi example code
2029
2840
(tcp_server.handle_request
2030
2841
(*args[2:], **kwargs) or True))
2031
2842
2032
logger.debug(u"Starting main loop")
2843
logger.debug("Starting main loop")
2033
2844
main_loop.run()
2034
except AvahiError, error:
2035
logger.critical(u"AvahiError: %s", error)
2845
except AvahiError as error:
2846
logger.critical("Avahi Error", exc_info=error)
2036
2847
cleanup()
2037
2848
sys.exit(1)
2038
2849
except KeyboardInterrupt:
2039
2850
if debug:
2040
print >> sys.stderr
2041
logger.debug(u"Server received KeyboardInterrupt")
2042
logger.debug(u"Server exiting")
2851
print("", file=sys.stderr)
2852
logger.debug("Server received KeyboardInterrupt")
2853
logger.debug("Server exiting")
2043
2854
# Must run before the D-Bus bus name gets deregistered
2044
2855
cleanup()
2045
2856
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0