To get this branch, use:
bzr branch
http://bzr.recompile.se/loggerhead/mandos/release
« back to all changes in this revision
Viewing changes to mandos
- browse files at revision 237.2.146
- compare with another revision
- download diff
- download tarball
- view history from revision 237.2.146
- Committer: Teddy Hogeborn
- Date: 2009-09-22 20:18:43 UTC
- mto: (24.1.146 mandos) (237.12.2 mandos-persistent) (299.1.1 release) (300.1.1 release) (301.1.1 release)
- mto: This revision was merged to the branch mainline in revision 270.
- Revision ID: teddy@fukt.bsnet.se-20090922201843-cd5uqnthf3eegg4l
* mandos (Client.start_checker): Bug fix: Fix race condition with
short intervals.
short intervals.
- files removed:
- DBUS-API
- debian/source
- debian/upstream
- 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 © 2008-2014 Teddy Hogeborn
15
# Copyright © 2008-2014 Björn Påhlsson
14
# Copyright © 2008,2009 Teddy Hogeborn
15
# Copyright © 2008,2009 Björn Påhlsson
16
16
#
17
17
# This program is free software: you can redistribute it and/or modify
18
18
# it under the terms of the GNU General Public License as published by
28
28
# along with this program. If not, see
29
29
# <http://www.gnu.org/licenses/>.
30
30
#
31
# Contact the authors at <mandos@recompile.se>.
31
# Contact the authors at <mandos@fukt.bsnet.se>.
32
32
#
33
33
34
from __future__ import (division, absolute_import, print_function,
35
unicode_literals)
36
37
from future_builtins import *
34
from __future__ import division, with_statement, absolute_import
38
35
39
36
import SocketServer as socketserver
40
37
import socket
41
import argparse
38
import optparse
42
39
import datetime
43
40
import errno
44
41
import gnutls.crypto
58
55
import logging
59
56
import logging.handlers
60
57
import pwd
61
import contextlib
58
from contextlib import closing
62
59
import struct
63
60
import fcntl
64
61
import functools
65
import cPickle as pickle
66
import multiprocessing
67
import types
68
import binascii
69
import tempfile
70
import itertools
71
import collections
72
62
73
63
import dbus
74
64
import dbus.service
88
78
except ImportError:
89
79
SO_BINDTODEVICE = None
90
80
91
version = "1.6.5"
92
stored_state_file = "clients.pickle"
93
94
logger = logging.getLogger()
95
syslogger = None
96
97
try:
98
if_nametoindex = (ctypes.cdll.LoadLibrary
99
(ctypes.util.find_library("c"))
100
.if_nametoindex)
101
except (OSError, AttributeError):
102
def if_nametoindex(interface):
103
"Get an interface index the hard way, i.e. using fcntl()"
104
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
105
with contextlib.closing(socket.socket()) as s:
106
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
107
struct.pack(str("16s16x"),
108
interface))
109
interface_index = struct.unpack(str("I"),
110
ifreq[16:20])[0]
111
return interface_index
112
113
114
def initlogger(debug, level=logging.WARNING):
115
"""init logger and add loglevel"""
116
117
syslogger = (logging.handlers.SysLogHandler
118
(facility =
119
logging.handlers.SysLogHandler.LOG_DAEMON,
120
address = str("/dev/log")))
121
syslogger.setFormatter(logging.Formatter
122
('Mandos [%(process)d]: %(levelname)s:'
123
' %(message)s'))
124
logger.addHandler(syslogger)
125
126
if debug:
127
console = logging.StreamHandler()
128
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
129
' [%(process)d]:'
130
' %(levelname)s:'
131
' %(message)s'))
132
logger.addHandler(console)
133
logger.setLevel(level)
134
135
136
class PGPError(Exception):
137
"""Exception if encryption/decryption fails"""
138
pass
139
140
141
class PGPEngine(object):
142
"""A simple class for OpenPGP symmetric encryption & decryption"""
143
def __init__(self):
144
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
145
self.gnupgargs = ['--batch',
146
'--home', self.tempdir,
147
'--force-mdc',
148
'--quiet',
149
'--no-use-agent']
150
151
def __enter__(self):
152
return self
153
154
def __exit__(self, exc_type, exc_value, traceback):
155
self._cleanup()
156
return False
157
158
def __del__(self):
159
self._cleanup()
160
161
def _cleanup(self):
162
if self.tempdir is not None:
163
# Delete contents of tempdir
164
for root, dirs, files in os.walk(self.tempdir,
165
topdown = False):
166
for filename in files:
167
os.remove(os.path.join(root, filename))
168
for dirname in dirs:
169
os.rmdir(os.path.join(root, dirname))
170
# Remove tempdir
171
os.rmdir(self.tempdir)
172
self.tempdir = None
173
174
def password_encode(self, password):
175
# Passphrase can not be empty and can not contain newlines or
176
# NUL bytes. So we prefix it and hex encode it.
177
encoded = b"mandos" + binascii.hexlify(password)
178
if len(encoded) > 2048:
179
# GnuPG can't handle long passwords, so encode differently
180
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
181
.replace(b"\n", b"\\n")
182
.replace(b"\0", b"\\x00"))
183
return encoded
184
185
def encrypt(self, data, password):
186
passphrase = self.password_encode(password)
187
with tempfile.NamedTemporaryFile(dir=self.tempdir
188
) as passfile:
189
passfile.write(passphrase)
190
passfile.flush()
191
proc = subprocess.Popen(['gpg', '--symmetric',
192
'--passphrase-file',
193
passfile.name]
194
+ self.gnupgargs,
195
stdin = subprocess.PIPE,
196
stdout = subprocess.PIPE,
197
stderr = subprocess.PIPE)
198
ciphertext, err = proc.communicate(input = data)
199
if proc.returncode != 0:
200
raise PGPError(err)
201
return ciphertext
202
203
def decrypt(self, data, password):
204
passphrase = self.password_encode(password)
205
with tempfile.NamedTemporaryFile(dir = self.tempdir
206
) as passfile:
207
passfile.write(passphrase)
208
passfile.flush()
209
proc = subprocess.Popen(['gpg', '--decrypt',
210
'--passphrase-file',
211
passfile.name]
212
+ self.gnupgargs,
213
stdin = subprocess.PIPE,
214
stdout = subprocess.PIPE,
215
stderr = subprocess.PIPE)
216
decrypted_plaintext, err = proc.communicate(input
217
= data)
218
if proc.returncode != 0:
219
raise PGPError(err)
220
return decrypted_plaintext
221
81
82
version = "1.0.12"
83
84
logger = logging.Logger(u'mandos')
85
syslogger = (logging.handlers.SysLogHandler
86
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
87
address = "/dev/log"))
88
syslogger.setFormatter(logging.Formatter
89
(u'Mandos [%(process)d]: %(levelname)s:'
90
u' %(message)s'))
91
logger.addHandler(syslogger)
92
93
console = logging.StreamHandler()
94
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
95
u' %(levelname)s:'
96
u' %(message)s'))
97
logger.addHandler(console)
222
98
223
99
class AvahiError(Exception):
224
100
def __init__(self, value, *args, **kwargs):
240
116
Attributes:
241
117
interface: integer; avahi.IF_UNSPEC or an interface index.
242
118
Used to optionally bind to the specified interface.
243
name: string; Example: 'Mandos'
244
type: string; Example: '_mandos._tcp'.
245
See <https://www.iana.org/assignments/service-names-port-numbers>
119
name: string; Example: u'Mandos'
120
type: string; Example: u'_mandos._tcp'.
121
See <http://www.dns-sd.org/ServiceTypes.html>
246
122
port: integer; what port to announce
247
123
TXT: list of strings; TXT record for the service
248
124
domain: string; Domain to publish on, default to .local if empty.
254
130
server: D-Bus Server
255
131
bus: dbus.SystemBus()
256
132
"""
257
258
133
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
259
134
servicetype = None, port = None, TXT = None,
260
domain = "", host = "", max_renames = 32768,
135
domain = u"", host = u"", max_renames = 32768,
261
136
protocol = avahi.PROTO_UNSPEC, bus = None):
262
137
self.interface = interface
263
138
self.name = name
272
147
self.group = None # our entry group
273
148
self.server = None
274
149
self.bus = bus
275
self.entry_group_state_changed_match = None
276
277
150
def rename(self):
278
151
"""Derived from the Avahi example code"""
279
152
if self.rename_count >= self.max_renames:
280
logger.critical("No suitable Zeroconf service name found"
281
" after %i retries, exiting.",
153
logger.critical(u"No suitable Zeroconf service name found"
154
u" after %i retries, exiting.",
282
155
self.rename_count)
283
raise AvahiServiceError("Too many renames")
284
self.name = unicode(self.server
285
.GetAlternativeServiceName(self.name))
286
logger.info("Changing Zeroconf service name to %r ...",
287
self.name)
156
raise AvahiServiceError(u"Too many renames")
157
self.name = self.server.GetAlternativeServiceName(self.name)
158
logger.info(u"Changing Zeroconf service name to %r ...",
159
unicode(self.name))
160
syslogger.setFormatter(logging.Formatter
161
(u'Mandos (%s) [%%(process)d]:'
162
u' %%(levelname)s: %%(message)s'
163
% self.name))
288
164
self.remove()
289
try:
290
self.add()
291
except dbus.exceptions.DBusException as error:
292
logger.critical("D-Bus Exception", exc_info=error)
293
self.cleanup()
294
os._exit(1)
165
self.add()
295
166
self.rename_count += 1
296
297
167
def remove(self):
298
168
"""Derived from the Avahi example code"""
299
if self.entry_group_state_changed_match is not None:
300
self.entry_group_state_changed_match.remove()
301
self.entry_group_state_changed_match = None
302
169
if self.group is not None:
303
170
self.group.Reset()
304
305
171
def add(self):
306
172
"""Derived from the Avahi example code"""
307
self.remove()
308
173
if self.group is None:
309
174
self.group = dbus.Interface(
310
175
self.bus.get_object(avahi.DBUS_NAME,
311
176
self.server.EntryGroupNew()),
312
177
avahi.DBUS_INTERFACE_ENTRY_GROUP)
313
self.entry_group_state_changed_match = (
314
self.group.connect_to_signal(
315
'StateChanged', self.entry_group_state_changed))
316
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
178
self.group.connect_to_signal('StateChanged',
179
self
180
.entry_group_state_changed)
181
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
317
182
self.name, self.type)
318
183
self.group.AddService(
319
184
self.interface,
324
189
dbus.UInt16(self.port),
325
190
avahi.string_array_to_txt_array(self.TXT))
326
191
self.group.Commit()
327
328
192
def entry_group_state_changed(self, state, error):
329
193
"""Derived from the Avahi example code"""
330
logger.debug("Avahi entry group state change: %i", state)
194
logger.debug(u"Avahi state change: %i", state)
331
195
332
196
if state == avahi.ENTRY_GROUP_ESTABLISHED:
333
logger.debug("Zeroconf service established.")
197
logger.debug(u"Zeroconf service established.")
334
198
elif state == avahi.ENTRY_GROUP_COLLISION:
335
logger.info("Zeroconf service name collision.")
199
logger.warning(u"Zeroconf service name collision.")
336
200
self.rename()
337
201
elif state == avahi.ENTRY_GROUP_FAILURE:
338
logger.critical("Avahi: Error in group state changed %s",
202
logger.critical(u"Avahi: Error in group state changed %s",
339
203
unicode(error))
340
raise AvahiGroupError("State changed: {0!s}"
341
.format(error))
342
204
raise AvahiGroupError(u"State changed: %s"
205
% unicode(error))
343
206
def cleanup(self):
344
207
"""Derived from the Avahi example code"""
345
208
if self.group is not None:
346
try:
347
self.group.Free()
348
except (dbus.exceptions.UnknownMethodException,
349
dbus.exceptions.DBusException):
350
pass
209
self.group.Free()
351
210
self.group = None
352
self.remove()
353
354
def server_state_changed(self, state, error=None):
211
def server_state_changed(self, state):
355
212
"""Derived from the Avahi example code"""
356
logger.debug("Avahi server state change: %i", state)
357
bad_states = { avahi.SERVER_INVALID:
358
"Zeroconf server invalid",
359
avahi.SERVER_REGISTERING: None,
360
avahi.SERVER_COLLISION:
361
"Zeroconf server name collision",
362
avahi.SERVER_FAILURE:
363
"Zeroconf server failure" }
364
if state in bad_states:
365
if bad_states[state] is not None:
366
if error is None:
367
logger.error(bad_states[state])
368
else:
369
logger.error(bad_states[state] + ": %r", error)
370
self.cleanup()
213
if state == avahi.SERVER_COLLISION:
214
logger.error(u"Zeroconf server name collision")
215
self.remove()
371
216
elif state == avahi.SERVER_RUNNING:
372
217
self.add()
373
else:
374
if error is None:
375
logger.debug("Unknown state: %r", state)
376
else:
377
logger.debug("Unknown state: %r: %r", state, error)
378
379
218
def activate(self):
380
219
"""Derived from the Avahi example code"""
381
220
if self.server is None:
382
221
self.server = dbus.Interface(
383
222
self.bus.get_object(avahi.DBUS_NAME,
384
avahi.DBUS_PATH_SERVER,
385
follow_name_owner_changes=True),
223
avahi.DBUS_PATH_SERVER),
386
224
avahi.DBUS_INTERFACE_SERVER)
387
self.server.connect_to_signal("StateChanged",
225
self.server.connect_to_signal(u"StateChanged",
388
226
self.server_state_changed)
389
227
self.server_state_changed(self.server.GetState())
390
228
391
229
392
class AvahiServiceToSyslog(AvahiService):
393
def rename(self):
394
"""Add the new name to the syslog messages"""
395
ret = AvahiService.rename(self)
396
syslogger.setFormatter(logging.Formatter
397
('Mandos ({0}) [%(process)d]:'
398
' %(levelname)s: %(message)s'
399
.format(self.name)))
400
return ret
401
402
403
def timedelta_to_milliseconds(td):
404
"Convert a datetime.timedelta() to milliseconds"
405
return ((td.days * 24 * 60 * 60 * 1000)
406
+ (td.seconds * 1000)
407
+ (td.microseconds // 1000))
408
409
410
230
class Client(object):
411
231
"""A representation of a client host served by this server.
412
232
413
233
Attributes:
414
approved: bool(); 'None' if not yet approved/disapproved
415
approval_delay: datetime.timedelta(); Time to wait for approval
416
approval_duration: datetime.timedelta(); Duration of one approval
234
name: string; from the config file, used in log messages and
235
D-Bus identifiers
236
fingerprint: string (40 or 32 hexadecimal digits); used to
237
uniquely identify the client
238
secret: bytestring; sent verbatim (over TLS) to client
239
host: string; available for use by the checker command
240
created: datetime.datetime(); (UTC) object creation
241
last_enabled: datetime.datetime(); (UTC)
242
enabled: bool()
243
last_checked_ok: datetime.datetime(); (UTC) or None
244
timeout: datetime.timedelta(); How long from last_checked_ok
245
until this client is invalid
246
interval: datetime.timedelta(); How often to start a new checker
247
disable_hook: If set, called by disable() as disable_hook(self)
417
248
checker: subprocess.Popen(); a running checker process used
418
249
to see if the client lives.
419
250
'None' if no process is running.
420
checker_callback_tag: a gobject event source tag, or None
421
checker_command: string; External command which is run to check
422
if client lives. %() expansions are done at
251
checker_initiator_tag: a gobject event source tag, or None
252
disable_initiator_tag: - '' -
253
checker_callback_tag: - '' -
254
checker_command: string; External command which is run to check if
255
client lives. %() expansions are done at
423
256
runtime with vars(self) as dict, so that for
424
257
instance %(name)s can be used in the command.
425
checker_initiator_tag: a gobject event source tag, or None
426
created: datetime.datetime(); (UTC) object creation
427
client_structure: Object describing what attributes a client has
428
and is used for storing the client at exit
429
258
current_checker_command: string; current running checker_command
430
disable_initiator_tag: a gobject event source tag, or None
431
enabled: bool()
432
fingerprint: string (40 or 32 hexadecimal digits); used to
433
uniquely identify the client
434
host: string; available for use by the checker command
435
interval: datetime.timedelta(); How often to start a new checker
436
last_approval_request: datetime.datetime(); (UTC) or None
437
last_checked_ok: datetime.datetime(); (UTC) or None
438
last_checker_status: integer between 0 and 255 reflecting exit
439
status of last checker. -1 reflects crashed
440
checker, -2 means no checker completed yet.
441
last_enabled: datetime.datetime(); (UTC) or None
442
name: string; from the config file, used in log messages and
443
D-Bus identifiers
444
secret: bytestring; sent verbatim (over TLS) to client
445
timeout: datetime.timedelta(); How long from last_checked_ok
446
until this client is disabled
447
extended_timeout: extra long timeout when secret has been sent
448
runtime_expansions: Allowed attributes for runtime expansion.
449
expires: datetime.datetime(); time (UTC) when a client will be
450
disabled, or None
451
server_settings: The server_settings dict from main()
452
259
"""
453
260
454
runtime_expansions = ("approval_delay", "approval_duration",
455
"created", "enabled", "expires",
456
"fingerprint", "host", "interval",
457
"last_approval_request", "last_checked_ok",
458
"last_enabled", "name", "timeout")
459
client_defaults = { "timeout": "PT5M",
460
"extended_timeout": "PT15M",
461
"interval": "PT2M",
462
"checker": "fping -q -- %%(host)s",
463
"host": "",
464
"approval_delay": "PT0S",
465
"approval_duration": "PT1S",
466
"approved_by_default": "True",
467
"enabled": "True",
468
}
261
@staticmethod
262
def _timedelta_to_milliseconds(td):
263
"Convert a datetime.timedelta() to milliseconds"
264
return ((td.days * 24 * 60 * 60 * 1000)
265
+ (td.seconds * 1000)
266
+ (td.microseconds // 1000))
469
267
470
268
def timeout_milliseconds(self):
471
269
"Return the 'timeout' attribute in milliseconds"
472
return timedelta_to_milliseconds(self.timeout)
473
474
def extended_timeout_milliseconds(self):
475
"Return the 'extended_timeout' attribute in milliseconds"
476
return timedelta_to_milliseconds(self.extended_timeout)
270
return self._timedelta_to_milliseconds(self.timeout)
477
271
478
272
def interval_milliseconds(self):
479
273
"Return the 'interval' attribute in milliseconds"
480
return timedelta_to_milliseconds(self.interval)
481
482
def approval_delay_milliseconds(self):
483
return timedelta_to_milliseconds(self.approval_delay)
484
485
@staticmethod
486
def config_parser(config):
487
"""Construct a new dict of client settings of this form:
488
{ client_name: {setting_name: value, ...}, ...}
489
with exceptions for any special settings as defined above.
490
NOTE: Must be a pure function. Must return the same result
491
value given the same arguments.
492
"""
493
settings = {}
494
for client_name in config.sections():
495
section = dict(config.items(client_name))
496
client = settings[client_name] = {}
497
498
client["host"] = section["host"]
499
# Reformat values from string types to Python types
500
client["approved_by_default"] = config.getboolean(
501
client_name, "approved_by_default")
502
client["enabled"] = config.getboolean(client_name,
503
"enabled")
504
505
client["fingerprint"] = (section["fingerprint"].upper()
506
.replace(" ", ""))
507
if "secret" in section:
508
client["secret"] = section["secret"].decode("base64")
509
elif "secfile" in section:
510
with open(os.path.expanduser(os.path.expandvars
511
(section["secfile"])),
512
"rb") as secfile:
513
client["secret"] = secfile.read()
514
else:
515
raise TypeError("No secret or secfile for section {0}"
516
.format(section))
517
client["timeout"] = string_to_delta(section["timeout"])
518
client["extended_timeout"] = string_to_delta(
519
section["extended_timeout"])
520
client["interval"] = string_to_delta(section["interval"])
521
client["approval_delay"] = string_to_delta(
522
section["approval_delay"])
523
client["approval_duration"] = string_to_delta(
524
section["approval_duration"])
525
client["checker_command"] = section["checker"]
526
client["last_approval_request"] = None
527
client["last_checked_ok"] = None
528
client["last_checker_status"] = -2
529
530
return settings
531
532
def __init__(self, settings, name = None, server_settings=None):
274
return self._timedelta_to_milliseconds(self.interval)
275
276
def __init__(self, name = None, disable_hook=None, config=None):
277
"""Note: the 'checker' key in 'config' sets the
278
'checker_command' attribute and *not* the 'checker'
279
attribute."""
533
280
self.name = name
534
if server_settings is None:
535
server_settings = {}
536
self.server_settings = server_settings
537
# adding all client settings
538
for setting, value in settings.iteritems():
539
setattr(self, setting, value)
540
541
if self.enabled:
542
if not hasattr(self, "last_enabled"):
543
self.last_enabled = datetime.datetime.utcnow()
544
if not hasattr(self, "expires"):
545
self.expires = (datetime.datetime.utcnow()
546
+ self.timeout)
547
else:
548
self.last_enabled = None
549
self.expires = None
550
551
logger.debug("Creating client %r", self.name)
281
if config is None:
282
config = {}
283
logger.debug(u"Creating client %r", self.name)
552
284
# Uppercase and remove spaces from fingerprint for later
553
285
# comparison purposes with return value from the fingerprint()
554
286
# function
555
logger.debug(" Fingerprint: %s", self.fingerprint)
556
self.created = settings.get("created",
557
datetime.datetime.utcnow())
558
559
# attributes specific for this server instance
287
self.fingerprint = (config[u"fingerprint"].upper()
288
.replace(u" ", u""))
289
logger.debug(u" Fingerprint: %s", self.fingerprint)
290
if u"secret" in config:
291
self.secret = config[u"secret"].decode(u"base64")
292
elif u"secfile" in config:
293
with closing(open(os.path.expanduser
294
(os.path.expandvars
295
(config[u"secfile"])))) as secfile:
296
self.secret = secfile.read()
297
else:
298
raise TypeError(u"No secret or secfile for client %s"
299
% self.name)
300
self.host = config.get(u"host", u"")
301
self.created = datetime.datetime.utcnow()
302
self.enabled = False
303
self.last_enabled = None
304
self.last_checked_ok = None
305
self.timeout = string_to_delta(config[u"timeout"])
306
self.interval = string_to_delta(config[u"interval"])
307
self.disable_hook = disable_hook
560
308
self.checker = None
561
309
self.checker_initiator_tag = None
562
310
self.disable_initiator_tag = None
563
311
self.checker_callback_tag = None
312
self.checker_command = config[u"checker"]
564
313
self.current_checker_command = None
565
self.approved = None
566
self.approvals_pending = 0
567
self.changedstate = (multiprocessing_manager
568
.Condition(multiprocessing_manager
569
.Lock()))
570
self.client_structure = [attr for attr in
571
self.__dict__.iterkeys()
572
if not attr.startswith("_")]
573
self.client_structure.append("client_structure")
574
575
for name, t in inspect.getmembers(type(self),
576
lambda obj:
577
isinstance(obj,
578
property)):
579
if not name.startswith("_"):
580
self.client_structure.append(name)
581
582
# Send notice to process children that client state has changed
583
def send_changedstate(self):
584
with self.changedstate:
585
self.changedstate.notify_all()
314
self.last_connect = None
586
315
587
316
def enable(self):
588
317
"""Start this client's checker and timeout hooks"""
589
if getattr(self, "enabled", False):
318
if getattr(self, u"enabled", False):
590
319
# Already enabled
591
320
return
592
self.expires = datetime.datetime.utcnow() + self.timeout
593
self.enabled = True
594
321
self.last_enabled = datetime.datetime.utcnow()
595
self.init_checker()
596
self.send_changedstate()
597
598
def disable(self, quiet=True):
599
"""Disable this client."""
600
if not getattr(self, "enabled", False):
601
return False
602
if not quiet:
603
logger.info("Disabling client %s", self.name)
604
if getattr(self, "disable_initiator_tag", None) is not None:
605
gobject.source_remove(self.disable_initiator_tag)
606
self.disable_initiator_tag = None
607
self.expires = None
608
if getattr(self, "checker_initiator_tag", None) is not None:
609
gobject.source_remove(self.checker_initiator_tag)
610
self.checker_initiator_tag = None
611
self.stop_checker()
612
self.enabled = False
613
if not quiet:
614
self.send_changedstate()
615
# Do not run this again if called by a gobject.timeout_add
616
return False
617
618
def __del__(self):
619
self.disable()
620
621
def init_checker(self):
622
322
# Schedule a new checker to be started an 'interval' from now,
623
323
# and every interval from then on.
624
if self.checker_initiator_tag is not None:
625
gobject.source_remove(self.checker_initiator_tag)
626
324
self.checker_initiator_tag = (gobject.timeout_add
627
325
(self.interval_milliseconds(),
628
326
self.start_checker))
327
# Also start a new checker *right now*.
328
self.start_checker()
629
329
# Schedule a disable() when 'timeout' has passed
630
if self.disable_initiator_tag is not None:
631
gobject.source_remove(self.disable_initiator_tag)
632
330
self.disable_initiator_tag = (gobject.timeout_add
633
331
(self.timeout_milliseconds(),
634
332
self.disable))
635
# Also start a new checker *right now*.
636
self.start_checker()
333
self.enabled = True
334
335
def disable(self):
336
"""Disable this client."""
337
if not getattr(self, "enabled", False):
338
return False
339
logger.info(u"Disabling client %s", self.name)
340
if getattr(self, u"disable_initiator_tag", False):
341
gobject.source_remove(self.disable_initiator_tag)
342
self.disable_initiator_tag = None
343
if getattr(self, u"checker_initiator_tag", False):
344
gobject.source_remove(self.checker_initiator_tag)
345
self.checker_initiator_tag = None
346
self.stop_checker()
347
if self.disable_hook:
348
self.disable_hook(self)
349
self.enabled = False
350
# Do not run this again if called by a gobject.timeout_add
351
return False
352
353
def __del__(self):
354
self.disable_hook = None
355
self.disable()
637
356
638
357
def checker_callback(self, pid, condition, command):
639
358
"""The checker has completed, so take appropriate actions."""
640
359
self.checker_callback_tag = None
641
360
self.checker = None
642
361
if os.WIFEXITED(condition):
643
self.last_checker_status = os.WEXITSTATUS(condition)
644
if self.last_checker_status == 0:
645
logger.info("Checker for %(name)s succeeded",
362
exitstatus = os.WEXITSTATUS(condition)
363
if exitstatus == 0:
364
logger.info(u"Checker for %(name)s succeeded",
646
365
vars(self))
647
366
self.checked_ok()
648
367
else:
649
logger.info("Checker for %(name)s failed",
368
logger.info(u"Checker for %(name)s failed",
650
369
vars(self))
651
370
else:
652
self.last_checker_status = -1
653
logger.warning("Checker for %(name)s crashed?",
371
logger.warning(u"Checker for %(name)s crashed?",
654
372
vars(self))
655
373
656
374
def checked_ok(self):
657
"""Assert that the client has been seen, alive and well."""
375
"""Bump up the timeout for this client.
376
377
This should only be called when the client has been seen,
378
alive and well.
379
"""
658
380
self.last_checked_ok = datetime.datetime.utcnow()
659
self.last_checker_status = 0
660
self.bump_timeout()
661
662
def bump_timeout(self, timeout=None):
663
"""Bump up the timeout for this client."""
664
if timeout is None:
665
timeout = self.timeout
666
if self.disable_initiator_tag is not None:
667
gobject.source_remove(self.disable_initiator_tag)
668
self.disable_initiator_tag = None
669
if getattr(self, "enabled", False):
670
self.disable_initiator_tag = (gobject.timeout_add
671
(timedelta_to_milliseconds
672
(timeout), self.disable))
673
self.expires = datetime.datetime.utcnow() + timeout
674
675
def need_approval(self):
676
self.last_approval_request = datetime.datetime.utcnow()
381
gobject.source_remove(self.disable_initiator_tag)
382
self.disable_initiator_tag = (gobject.timeout_add
383
(self.timeout_milliseconds(),
384
self.disable))
677
385
678
386
def start_checker(self):
679
387
"""Start a new checker subprocess if one is not running.
681
389
If a checker already exists, leave it running and do
682
390
nothing."""
683
391
# The reason for not killing a running checker is that if we
684
# did that, and if a checker (for some reason) started running
685
# slowly and taking more than 'interval' time, then the client
686
# would inevitably timeout, since no checker would get a
687
# chance to run to completion. If we instead leave running
392
# did that, then if a checker (for some reason) started
393
# running slowly and taking more than 'interval' time, the
394
# client would inevitably timeout, since no checker would get
395
# a chance to run to completion. If we instead leave running
688
396
# checkers alone, the checker would have to take more time
689
# than 'timeout' for the client to be disabled, which is as it
690
# should be.
397
# than 'timeout' for the client to be declared invalid, which
398
# is as it should be.
691
399
692
400
# If a checker exists, make sure it is not a zombie
693
401
try:
694
402
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
695
except AttributeError:
696
pass
697
except OSError as error:
698
if error.errno != errno.ECHILD:
699
raise
403
except (AttributeError, OSError), error:
404
if (isinstance(error, OSError)
405
and error.errno != errno.ECHILD):
406
raise error
700
407
else:
701
408
if pid:
702
logger.warning("Checker was a zombie")
409
logger.warning(u"Checker was a zombie")
703
410
gobject.source_remove(self.checker_callback_tag)
704
411
self.checker_callback(pid, status,
705
412
self.current_checker_command)
706
413
# Start a new checker if needed
707
414
if self.checker is None:
708
# Escape attributes for the shell
709
escaped_attrs = dict(
710
(attr, re.escape(unicode(getattr(self, attr))))
711
for attr in
712
self.runtime_expansions)
713
415
try:
714
command = self.checker_command % escaped_attrs
715
except TypeError as error:
716
logger.error('Could not format string "%s"',
717
self.checker_command, exc_info=error)
718
return True # Try again later
416
# In case checker_command has exactly one % operator
417
command = self.checker_command % self.host
418
except TypeError:
419
# Escape attributes for the shell
420
escaped_attrs = dict((key,
421
re.escape(unicode(str(val),
422
errors=
423
u'replace')))
424
for key, val in
425
vars(self).iteritems())
426
try:
427
command = self.checker_command % escaped_attrs
428
except TypeError, error:
429
logger.error(u'Could not format string "%s":'
430
u' %s', self.checker_command, error)
431
return True # Try again later
719
432
self.current_checker_command = command
720
433
try:
721
logger.info("Starting checker %r for %s",
434
logger.info(u"Starting checker %r for %s",
722
435
command, self.name)
723
436
# We don't need to redirect stdout and stderr, since
724
437
# in normal mode, that is already done by daemon(),
725
438
# and in debug mode we don't want to. (Stdin is
726
439
# always replaced by /dev/null.)
727
# The exception is when not debugging but nevertheless
728
# running in the foreground; use the previously
729
# created wnull.
730
popen_args = {}
731
if (not self.server_settings["debug"]
732
and self.server_settings["foreground"]):
733
popen_args.update({"stdout": wnull,
734
"stderr": wnull })
735
440
self.checker = subprocess.Popen(command,
736
441
close_fds=True,
737
shell=True, cwd="/",
738
**popen_args)
739
except OSError as error:
740
logger.error("Failed to start subprocess",
741
exc_info=error)
742
return True
743
self.checker_callback_tag = (gobject.child_watch_add
744
(self.checker.pid,
745
self.checker_callback,
746
data=command))
747
# The checker may have completed before the gobject
748
# watch was added. Check for this.
749
try:
442
shell=True, cwd=u"/")
443
self.checker_callback_tag = (gobject.child_watch_add
444
(self.checker.pid,
445
self.checker_callback,
446
data=command))
447
# The checker may have completed before the gobject
448
# watch was added. Check for this.
750
449
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
751
except OSError as error:
752
if error.errno == errno.ECHILD:
753
# This should never happen
754
logger.error("Child process vanished",
755
exc_info=error)
756
return True
757
raise
758
if pid:
759
gobject.source_remove(self.checker_callback_tag)
760
self.checker_callback(pid, status, command)
450
if pid:
451
gobject.source_remove(self.checker_callback_tag)
452
self.checker_callback(pid, status, command)
453
except OSError, error:
454
logger.error(u"Failed to start subprocess: %s",
455
error)
761
456
# Re-run this periodically if run by gobject.timeout_add
762
457
return True
763
458
766
461
if self.checker_callback_tag:
767
462
gobject.source_remove(self.checker_callback_tag)
768
463
self.checker_callback_tag = None
769
if getattr(self, "checker", None) is None:
464
if getattr(self, u"checker", None) is None:
770
465
return
771
logger.debug("Stopping checker for %(name)s", vars(self))
466
logger.debug(u"Stopping checker for %(name)s", vars(self))
772
467
try:
773
self.checker.terminate()
774
#time.sleep(0.5)
468
os.kill(self.checker.pid, signal.SIGTERM)
469
#os.sleep(0.5)
775
470
#if self.checker.poll() is None:
776
# self.checker.kill()
777
except OSError as error:
471
# os.kill(self.checker.pid, signal.SIGKILL)
472
except OSError, error:
778
473
if error.errno != errno.ESRCH: # No such process
779
474
raise
780
475
self.checker = None
781
782
783
def dbus_service_property(dbus_interface, signature="v",
784
access="readwrite", byte_arrays=False):
476
477
def still_valid(self):
478
"""Has the timeout not yet passed for this client?"""
479
if not getattr(self, u"enabled", False):
480
return False
481
now = datetime.datetime.utcnow()
482
if self.last_checked_ok is None:
483
return now < (self.created + self.timeout)
484
else:
485
return now < (self.last_checked_ok + self.timeout)
486
487
488
def dbus_service_property(dbus_interface, signature=u"v",
489
access=u"readwrite", byte_arrays=False):
785
490
"""Decorators for marking methods of a DBusObjectWithProperties to
786
491
become properties on the D-Bus.
787
492
792
497
dbus.service.method, except there is only "signature", since the
793
498
type from Get() and the type sent to Set() is the same.
794
499
"""
795
# Encoding deeply encoded byte arrays is not supported yet by the
796
# "Set" method, so we fail early here:
797
if byte_arrays and signature != "ay":
798
raise ValueError("Byte arrays not supported for non-'ay'"
799
" signature {0!r}".format(signature))
800
500
def decorator(func):
801
501
func._dbus_is_property = True
802
502
func._dbus_interface = dbus_interface
803
503
func._dbus_signature = signature
804
504
func._dbus_access = access
805
505
func._dbus_name = func.__name__
806
if func._dbus_name.endswith("_dbus_property"):
506
if func._dbus_name.endswith(u"_dbus_property"):
807
507
func._dbus_name = func._dbus_name[:-14]
808
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
809
return func
810
return decorator
811
812
813
def dbus_interface_annotations(dbus_interface):
814
"""Decorator for marking functions returning interface annotations
815
816
Usage:
817
818
@dbus_interface_annotations("org.example.Interface")
819
def _foo(self): # Function name does not matter
820
return {"org.freedesktop.DBus.Deprecated": "true",
821
"org.freedesktop.DBus.Property.EmitsChangedSignal":
822
"false"}
823
"""
824
def decorator(func):
825
func._dbus_is_interface = True
826
func._dbus_interface = dbus_interface
827
func._dbus_name = dbus_interface
828
return func
829
return decorator
830
831
832
def dbus_annotations(annotations):
833
"""Decorator to annotate D-Bus methods, signals or properties
834
Usage:
835
836
@dbus_service_property("org.example.Interface", signature="b",
837
access="r")
838
@dbus_annotations({{"org.freedesktop.DBus.Deprecated": "true",
839
"org.freedesktop.DBus.Property."
840
"EmitsChangedSignal": "false"})
841
def Property_dbus_property(self):
842
return dbus.Boolean(False)
843
"""
844
def decorator(func):
845
func._dbus_annotations = annotations
508
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
846
509
return func
847
510
return decorator
848
511
868
531
869
532
class DBusObjectWithProperties(dbus.service.Object):
870
533
"""A D-Bus object with properties.
871
534
872
535
Classes inheriting from this can use the dbus_service_property
873
536
decorator to expose methods as D-Bus properties. It exposes the
874
537
standard Get(), Set(), and GetAll() methods on the D-Bus.
875
538
"""
876
539
877
540
@staticmethod
878
def _is_dbus_thing(thing):
879
"""Returns a function testing if an attribute is a D-Bus thing
880
881
If called like _is_dbus_thing("method") it returns a function
882
suitable for use as predicate to inspect.getmembers().
883
"""
884
return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),
885
False)
541
def _is_dbus_property(obj):
542
return getattr(obj, u"_dbus_is_property", False)
886
543
887
def _get_all_dbus_things(self, thing):
544
def _get_all_dbus_properties(self):
888
545
"""Returns a generator of (name, attribute) pairs
889
546
"""
890
return ((getattr(athing.__get__(self), "_dbus_name",
891
name),
892
athing.__get__(self))
893
for cls in self.__class__.__mro__
894
for name, athing in
895
inspect.getmembers(cls,
896
self._is_dbus_thing(thing)))
547
return ((prop._dbus_name, prop)
548
for name, prop in
549
inspect.getmembers(self, self._is_dbus_property))
897
550
898
551
def _get_dbus_property(self, interface_name, property_name):
899
552
"""Returns a bound method if one exists which is a D-Bus
900
553
property with the specified name and interface.
901
554
"""
902
for cls in self.__class__.__mro__:
903
for name, value in (inspect.getmembers
904
(cls,
905
self._is_dbus_thing("property"))):
906
if (value._dbus_name == property_name
907
and value._dbus_interface == interface_name):
908
return value.__get__(self)
909
555
for name in (property_name,
556
property_name + u"_dbus_property"):
557
prop = getattr(self, name, None)
558
if (prop is None
559
or not self._is_dbus_property(prop)
560
or prop._dbus_name != property_name
561
or (interface_name and prop._dbus_interface
562
and interface_name != prop._dbus_interface)):
563
continue
564
return prop
910
565
# No such property
911
raise DBusPropertyNotFound(self.dbus_object_path + ":"
912
+ interface_name + "."
566
raise DBusPropertyNotFound(self.dbus_object_path + u":"
567
+ interface_name + u"."
913
568
+ property_name)
914
569
915
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
916
out_signature="v")
570
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
571
out_signature=u"v")
917
572
def Get(self, interface_name, property_name):
918
573
"""Standard D-Bus property Get() method, see D-Bus standard.
919
574
"""
920
575
prop = self._get_dbus_property(interface_name, property_name)
921
if prop._dbus_access == "write":
576
if prop._dbus_access == u"write":
922
577
raise DBusPropertyAccessException(property_name)
923
578
value = prop()
924
if not hasattr(value, "variant_level"):
579
if not hasattr(value, u"variant_level"):
925
580
return value
926
581
return type(value)(value, variant_level=value.variant_level+1)
927
582
928
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
583
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
929
584
def Set(self, interface_name, property_name, value):
930
585
"""Standard D-Bus property Set() method, see D-Bus standard.
931
586
"""
932
587
prop = self._get_dbus_property(interface_name, property_name)
933
if prop._dbus_access == "read":
588
if prop._dbus_access == u"read":
934
589
raise DBusPropertyAccessException(property_name)
935
if prop._dbus_get_args_options["byte_arrays"]:
936
# The byte_arrays option is not supported yet on
937
# signatures other than "ay".
938
if prop._dbus_signature != "ay":
939
raise ValueError("Byte arrays not supported for non-"
940
"'ay' signature {0!r}"
941
.format(prop._dbus_signature))
942
value = dbus.ByteArray(b''.join(chr(byte)
943
for byte in value))
590
if prop._dbus_get_args_options[u"byte_arrays"]:
591
value = dbus.ByteArray(''.join(unichr(byte)
592
for byte in value))
944
593
prop(value)
945
594
946
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
947
out_signature="a{sv}")
595
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
596
out_signature=u"a{sv}")
948
597
def GetAll(self, interface_name):
949
598
"""Standard D-Bus property GetAll() method, see D-Bus
950
599
standard.
951
600
952
601
Note: Will not include properties with access="write".
953
602
"""
954
properties = {}
955
for name, prop in self._get_all_dbus_things("property"):
603
all = {}
604
for name, prop in self._get_all_dbus_properties():
956
605
if (interface_name
957
606
and interface_name != prop._dbus_interface):
958
607
# Interface non-empty but did not match
959
608
continue
960
609
# Ignore write-only properties
961
if prop._dbus_access == "write":
610
if prop._dbus_access == u"write":
962
611
continue
963
612
value = prop()
964
if not hasattr(value, "variant_level"):
965
properties[name] = value
613
if not hasattr(value, u"variant_level"):
614
all[name] = value
966
615
continue
967
properties[name] = type(value)(value, variant_level=
968
value.variant_level+1)
969
return dbus.Dictionary(properties, signature="sv")
616
all[name] = type(value)(value, variant_level=
617
value.variant_level+1)
618
return dbus.Dictionary(all, signature=u"sv")
970
619
971
620
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
972
out_signature="s",
621
out_signature=u"s",
973
622
path_keyword='object_path',
974
623
connection_keyword='connection')
975
624
def Introspect(self, object_path, connection):
976
"""Overloading of standard D-Bus method.
977
978
Inserts property tags and interface annotation tags.
625
"""Standard D-Bus method, overloaded to insert property tags.
979
626
"""
980
627
xmlstring = dbus.service.Object.Introspect(self, object_path,
981
connection)
982
try:
983
document = xml.dom.minidom.parseString(xmlstring)
984
def make_tag(document, name, prop):
985
e = document.createElement("property")
986
e.setAttribute("name", name)
987
e.setAttribute("type", prop._dbus_signature)
988
e.setAttribute("access", prop._dbus_access)
989
return e
990
for if_tag in document.getElementsByTagName("interface"):
991
# Add property tags
992
for tag in (make_tag(document, name, prop)
993
for name, prop
994
in self._get_all_dbus_things("property")
995
if prop._dbus_interface
996
== if_tag.getAttribute("name")):
997
if_tag.appendChild(tag)
998
# Add annotation tags
999
for typ in ("method", "signal", "property"):
1000
for tag in if_tag.getElementsByTagName(typ):
1001
annots = dict()
1002
for name, prop in (self.
1003
_get_all_dbus_things(typ)):
1004
if (name == tag.getAttribute("name")
1005
and prop._dbus_interface
1006
== if_tag.getAttribute("name")):
1007
annots.update(getattr
1008
(prop,
1009
"_dbus_annotations",
1010
{}))
1011
for name, value in annots.iteritems():
1012
ann_tag = document.createElement(
1013
"annotation")
1014
ann_tag.setAttribute("name", name)
1015
ann_tag.setAttribute("value", value)
1016
tag.appendChild(ann_tag)
1017
# Add interface annotation tags
1018
for annotation, value in dict(
1019
itertools.chain.from_iterable(
1020
annotations().iteritems()
1021
for name, annotations in
1022
self._get_all_dbus_things("interface")
1023
if name == if_tag.getAttribute("name")
1024
)).iteritems():
1025
ann_tag = document.createElement("annotation")
1026
ann_tag.setAttribute("name", annotation)
1027
ann_tag.setAttribute("value", value)
1028
if_tag.appendChild(ann_tag)
1029
# Add the names to the return values for the
1030
# "org.freedesktop.DBus.Properties" methods
1031
if (if_tag.getAttribute("name")
1032
== "org.freedesktop.DBus.Properties"):
1033
for cn in if_tag.getElementsByTagName("method"):
1034
if cn.getAttribute("name") == "Get":
1035
for arg in cn.getElementsByTagName("arg"):
1036
if (arg.getAttribute("direction")
1037
== "out"):
1038
arg.setAttribute("name", "value")
1039
elif cn.getAttribute("name") == "GetAll":
1040
for arg in cn.getElementsByTagName("arg"):
1041
if (arg.getAttribute("direction")
1042
== "out"):
1043
arg.setAttribute("name", "props")
1044
xmlstring = document.toxml("utf-8")
1045
document.unlink()
1046
except (AttributeError, xml.dom.DOMException,
1047
xml.parsers.expat.ExpatError) as error:
1048
logger.error("Failed to override Introspection method",
1049
exc_info=error)
628
connection)
629
document = xml.dom.minidom.parseString(xmlstring)
630
del xmlstring
631
def make_tag(document, name, prop):
632
e = document.createElement(u"property")
633
e.setAttribute(u"name", name)
634
e.setAttribute(u"type", prop._dbus_signature)
635
e.setAttribute(u"access", prop._dbus_access)
636
return e
637
for if_tag in document.getElementsByTagName(u"interface"):
638
for tag in (make_tag(document, name, prop)
639
for name, prop
640
in self._get_all_dbus_properties()
641
if prop._dbus_interface
642
== if_tag.getAttribute(u"name")):
643
if_tag.appendChild(tag)
644
xmlstring = document.toxml(u"utf-8")
645
document.unlink()
1050
646
return xmlstring
1051
647
1052
648
1053
def datetime_to_dbus(dt, variant_level=0):
1054
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1055
if dt is None:
1056
return dbus.String("", variant_level = variant_level)
1057
return dbus.String(dt.isoformat(),
1058
variant_level=variant_level)
1059
1060
1061
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1062
"""A class decorator; applied to a subclass of
1063
dbus.service.Object, it will add alternate D-Bus attributes with
1064
interface names according to the "alt_interface_names" mapping.
1065
Usage:
1066
1067
@alternate_dbus_interfaces({"org.example.Interface":
1068
"net.example.AlternateInterface"})
1069
class SampleDBusObject(dbus.service.Object):
1070
@dbus.service.method("org.example.Interface")
1071
def SampleDBusMethod():
1072
pass
1073
1074
The above "SampleDBusMethod" on "SampleDBusObject" will be
1075
reachable via two interfaces: "org.example.Interface" and
1076
"net.example.AlternateInterface", the latter of which will have
1077
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1078
"true", unless "deprecate" is passed with a False value.
1079
1080
This works for methods and signals, and also for D-Bus properties
1081
(from DBusObjectWithProperties) and interfaces (from the
1082
dbus_interface_annotations decorator).
1083
"""
1084
def wrapper(cls):
1085
for orig_interface_name, alt_interface_name in (
1086
alt_interface_names.iteritems()):
1087
attr = {}
1088
interface_names = set()
1089
# Go though all attributes of the class
1090
for attrname, attribute in inspect.getmembers(cls):
1091
# Ignore non-D-Bus attributes, and D-Bus attributes
1092
# with the wrong interface name
1093
if (not hasattr(attribute, "_dbus_interface")
1094
or not attribute._dbus_interface
1095
.startswith(orig_interface_name)):
1096
continue
1097
# Create an alternate D-Bus interface name based on
1098
# the current name
1099
alt_interface = (attribute._dbus_interface
1100
.replace(orig_interface_name,
1101
alt_interface_name))
1102
interface_names.add(alt_interface)
1103
# Is this a D-Bus signal?
1104
if getattr(attribute, "_dbus_is_signal", False):
1105
# Extract the original non-method undecorated
1106
# function by black magic
1107
nonmethod_func = (dict(
1108
zip(attribute.func_code.co_freevars,
1109
attribute.__closure__))["func"]
1110
.cell_contents)
1111
# Create a new, but exactly alike, function
1112
# object, and decorate it to be a new D-Bus signal
1113
# with the alternate D-Bus interface name
1114
new_function = (dbus.service.signal
1115
(alt_interface,
1116
attribute._dbus_signature)
1117
(types.FunctionType(
1118
nonmethod_func.func_code,
1119
nonmethod_func.func_globals,
1120
nonmethod_func.func_name,
1121
nonmethod_func.func_defaults,
1122
nonmethod_func.func_closure)))
1123
# Copy annotations, if any
1124
try:
1125
new_function._dbus_annotations = (
1126
dict(attribute._dbus_annotations))
1127
except AttributeError:
1128
pass
1129
# Define a creator of a function to call both the
1130
# original and alternate functions, so both the
1131
# original and alternate signals gets sent when
1132
# the function is called
1133
def fixscope(func1, func2):
1134
"""This function is a scope container to pass
1135
func1 and func2 to the "call_both" function
1136
outside of its arguments"""
1137
def call_both(*args, **kwargs):
1138
"""This function will emit two D-Bus
1139
signals by calling func1 and func2"""
1140
func1(*args, **kwargs)
1141
func2(*args, **kwargs)
1142
return call_both
1143
# Create the "call_both" function and add it to
1144
# the class
1145
attr[attrname] = fixscope(attribute, new_function)
1146
# Is this a D-Bus method?
1147
elif getattr(attribute, "_dbus_is_method", False):
1148
# Create a new, but exactly alike, function
1149
# object. Decorate it to be a new D-Bus method
1150
# with the alternate D-Bus interface name. Add it
1151
# to the class.
1152
attr[attrname] = (dbus.service.method
1153
(alt_interface,
1154
attribute._dbus_in_signature,
1155
attribute._dbus_out_signature)
1156
(types.FunctionType
1157
(attribute.func_code,
1158
attribute.func_globals,
1159
attribute.func_name,
1160
attribute.func_defaults,
1161
attribute.func_closure)))
1162
# Copy annotations, if any
1163
try:
1164
attr[attrname]._dbus_annotations = (
1165
dict(attribute._dbus_annotations))
1166
except AttributeError:
1167
pass
1168
# Is this a D-Bus property?
1169
elif getattr(attribute, "_dbus_is_property", False):
1170
# Create a new, but exactly alike, function
1171
# object, and decorate it to be a new D-Bus
1172
# property with the alternate D-Bus interface
1173
# name. Add it to the class.
1174
attr[attrname] = (dbus_service_property
1175
(alt_interface,
1176
attribute._dbus_signature,
1177
attribute._dbus_access,
1178
attribute
1179
._dbus_get_args_options
1180
["byte_arrays"])
1181
(types.FunctionType
1182
(attribute.func_code,
1183
attribute.func_globals,
1184
attribute.func_name,
1185
attribute.func_defaults,
1186
attribute.func_closure)))
1187
# Copy annotations, if any
1188
try:
1189
attr[attrname]._dbus_annotations = (
1190
dict(attribute._dbus_annotations))
1191
except AttributeError:
1192
pass
1193
# Is this a D-Bus interface?
1194
elif getattr(attribute, "_dbus_is_interface", False):
1195
# Create a new, but exactly alike, function
1196
# object. Decorate it to be a new D-Bus interface
1197
# with the alternate D-Bus interface name. Add it
1198
# to the class.
1199
attr[attrname] = (dbus_interface_annotations
1200
(alt_interface)
1201
(types.FunctionType
1202
(attribute.func_code,
1203
attribute.func_globals,
1204
attribute.func_name,
1205
attribute.func_defaults,
1206
attribute.func_closure)))
1207
if deprecate:
1208
# Deprecate all alternate interfaces
1209
iname="_AlternateDBusNames_interface_annotation{0}"
1210
for interface_name in interface_names:
1211
@dbus_interface_annotations(interface_name)
1212
def func(self):
1213
return { "org.freedesktop.DBus.Deprecated":
1214
"true" }
1215
# Find an unused name
1216
for aname in (iname.format(i)
1217
for i in itertools.count()):
1218
if aname not in attr:
1219
attr[aname] = func
1220
break
1221
if interface_names:
1222
# Replace the class with a new subclass of it with
1223
# methods, signals, etc. as created above.
1224
cls = type(b"{0}Alternate".format(cls.__name__),
1225
(cls,), attr)
1226
return cls
1227
return wrapper
1228
1229
1230
@alternate_dbus_interfaces({"se.recompile.Mandos":
1231
"se.bsnet.fukt.Mandos"})
1232
649
class ClientDBus(Client, DBusObjectWithProperties):
1233
650
"""A Client class using D-Bus
1234
651
1236
653
dbus_object_path: dbus.ObjectPath
1237
654
bus: dbus.SystemBus()
1238
655
"""
1239
1240
runtime_expansions = (Client.runtime_expansions
1241
+ ("dbus_object_path",))
1242
1243
656
# dbus.service.Object doesn't use super(), so we can't either.
1244
657
1245
658
def __init__(self, bus = None, *args, **kwargs):
1247
660
Client.__init__(self, *args, **kwargs)
1248
661
# Only now, when this client is initialized, can it show up on
1249
662
# the D-Bus
1250
client_object_name = unicode(self.name).translate(
1251
{ord("."): ord("_"),
1252
ord("-"): ord("_")})
1253
663
self.dbus_object_path = (dbus.ObjectPath
1254
("/clients/" + client_object_name))
664
(u"/clients/"
665
+ self.name.replace(u".", u"_")))
1255
666
DBusObjectWithProperties.__init__(self, self.bus,
1256
667
self.dbus_object_path)
1257
668
1258
def notifychangeproperty(transform_func,
1259
dbus_name, type_func=lambda x: x,
1260
variant_level=1):
1261
""" Modify a variable so that it's a property which announces
1262
its changes to DBus.
1263
1264
transform_fun: Function that takes a value and a variant_level
1265
and transforms it to a D-Bus type.
1266
dbus_name: D-Bus name of the variable
1267
type_func: Function that transform the value before sending it
1268
to the D-Bus. Default: no transform
1269
variant_level: D-Bus variant level. Default: 1
1270
"""
1271
attrname = "_{0}".format(dbus_name)
1272
def setter(self, value):
1273
if hasattr(self, "dbus_object_path"):
1274
if (not hasattr(self, attrname) or
1275
type_func(getattr(self, attrname, None))
1276
!= type_func(value)):
1277
dbus_value = transform_func(type_func(value),
1278
variant_level
1279
=variant_level)
1280
self.PropertyChanged(dbus.String(dbus_name),
1281
dbus_value)
1282
setattr(self, attrname, value)
1283
1284
return property(lambda self: getattr(self, attrname), setter)
1285
1286
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1287
approvals_pending = notifychangeproperty(dbus.Boolean,
1288
"ApprovalPending",
1289
type_func = bool)
1290
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1291
last_enabled = notifychangeproperty(datetime_to_dbus,
1292
"LastEnabled")
1293
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1294
type_func = lambda checker:
1295
checker is not None)
1296
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1297
"LastCheckedOK")
1298
last_checker_status = notifychangeproperty(dbus.Int16,
1299
"LastCheckerStatus")
1300
last_approval_request = notifychangeproperty(
1301
datetime_to_dbus, "LastApprovalRequest")
1302
approved_by_default = notifychangeproperty(dbus.Boolean,
1303
"ApprovedByDefault")
1304
approval_delay = notifychangeproperty(dbus.UInt64,
1305
"ApprovalDelay",
1306
type_func =
1307
timedelta_to_milliseconds)
1308
approval_duration = notifychangeproperty(
1309
dbus.UInt64, "ApprovalDuration",
1310
type_func = timedelta_to_milliseconds)
1311
host = notifychangeproperty(dbus.String, "Host")
1312
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1313
type_func =
1314
timedelta_to_milliseconds)
1315
extended_timeout = notifychangeproperty(
1316
dbus.UInt64, "ExtendedTimeout",
1317
type_func = timedelta_to_milliseconds)
1318
interval = notifychangeproperty(dbus.UInt64,
1319
"Interval",
1320
type_func =
1321
timedelta_to_milliseconds)
1322
checker_command = notifychangeproperty(dbus.String, "Checker")
1323
1324
del notifychangeproperty
669
@staticmethod
670
def _datetime_to_dbus(dt, variant_level=0):
671
"""Convert a UTC datetime.datetime() to a D-Bus type."""
672
return dbus.String(dt.isoformat(),
673
variant_level=variant_level)
674
675
def enable(self):
676
oldstate = getattr(self, u"enabled", False)
677
r = Client.enable(self)
678
if oldstate != self.enabled:
679
# Emit D-Bus signals
680
self.PropertyChanged(dbus.String(u"enabled"),
681
dbus.Boolean(True, variant_level=1))
682
self.PropertyChanged(
683
dbus.String(u"last_enabled"),
684
self._datetime_to_dbus(self.last_enabled,
685
variant_level=1))
686
return r
687
688
def disable(self, signal = True):
689
oldstate = getattr(self, u"enabled", False)
690
r = Client.disable(self)
691
if signal and oldstate != self.enabled:
692
# Emit D-Bus signal
693
self.PropertyChanged(dbus.String(u"enabled"),
694
dbus.Boolean(False, variant_level=1))
695
return r
1325
696
1326
697
def __del__(self, *args, **kwargs):
1327
698
try:
1328
699
self.remove_from_connection()
1329
700
except LookupError:
1330
701
pass
1331
if hasattr(DBusObjectWithProperties, "__del__"):
702
if hasattr(DBusObjectWithProperties, u"__del__"):
1332
703
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1333
704
Client.__del__(self, *args, **kwargs)
1334
705
1336
707
*args, **kwargs):
1337
708
self.checker_callback_tag = None
1338
709
self.checker = None
710
# Emit D-Bus signal
711
self.PropertyChanged(dbus.String(u"checker_running"),
712
dbus.Boolean(False, variant_level=1))
1339
713
if os.WIFEXITED(condition):
1340
714
exitstatus = os.WEXITSTATUS(condition)
1341
715
# Emit D-Bus signal
1351
725
return Client.checker_callback(self, pid, condition, command,
1352
726
*args, **kwargs)
1353
727
728
def checked_ok(self, *args, **kwargs):
729
r = Client.checked_ok(self, *args, **kwargs)
730
# Emit D-Bus signal
731
self.PropertyChanged(
732
dbus.String(u"last_checked_ok"),
733
(self._datetime_to_dbus(self.last_checked_ok,
734
variant_level=1)))
735
return r
736
1354
737
def start_checker(self, *args, **kwargs):
1355
old_checker_pid = getattr(self.checker, "pid", None)
738
old_checker = self.checker
739
if self.checker is not None:
740
old_checker_pid = self.checker.pid
741
else:
742
old_checker_pid = None
1356
743
r = Client.start_checker(self, *args, **kwargs)
1357
744
# Only if new checker process was started
1358
745
if (self.checker is not None
1359
746
and old_checker_pid != self.checker.pid):
1360
747
# Emit D-Bus signal
1361
748
self.CheckerStarted(self.current_checker_command)
1362
return r
1363
1364
def _reset_approved(self):
1365
self.approved = None
1366
return False
1367
1368
def approve(self, value=True):
1369
self.approved = value
1370
gobject.timeout_add(timedelta_to_milliseconds
1371
(self.approval_duration),
1372
self._reset_approved)
1373
self.send_changedstate()
1374
1375
## D-Bus methods, signals & properties
1376
_interface = "se.recompile.Mandos.Client"
1377
1378
## Interfaces
1379
1380
@dbus_interface_annotations(_interface)
1381
def _foo(self):
1382
return { "org.freedesktop.DBus.Property.EmitsChangedSignal":
1383
"false"}
1384
1385
## Signals
749
self.PropertyChanged(
750
dbus.String(u"checker_running"),
751
dbus.Boolean(True, variant_level=1))
752
return r
753
754
def stop_checker(self, *args, **kwargs):
755
old_checker = getattr(self, u"checker", None)
756
r = Client.stop_checker(self, *args, **kwargs)
757
if (old_checker is not None
758
and getattr(self, u"checker", None) is None):
759
self.PropertyChanged(dbus.String(u"checker_running"),
760
dbus.Boolean(False, variant_level=1))
761
return r
762
763
## D-Bus methods & signals
764
_interface = u"se.bsnet.fukt.Mandos.Client"
765
766
# CheckedOK - method
767
@dbus.service.method(_interface)
768
def CheckedOK(self):
769
return self.checked_ok()
1386
770
1387
771
# CheckerCompleted - signal
1388
@dbus.service.signal(_interface, signature="nxs")
772
@dbus.service.signal(_interface, signature=u"nxs")
1389
773
def CheckerCompleted(self, exitcode, waitstatus, command):
1390
774
"D-Bus signal"
1391
775
pass
1392
776
1393
777
# CheckerStarted - signal
1394
@dbus.service.signal(_interface, signature="s")
778
@dbus.service.signal(_interface, signature=u"s")
1395
779
def CheckerStarted(self, command):
1396
780
"D-Bus signal"
1397
781
pass
1398
782
1399
783
# PropertyChanged - signal
1400
@dbus.service.signal(_interface, signature="sv")
784
@dbus.service.signal(_interface, signature=u"sv")
1401
785
def PropertyChanged(self, property, value):
1402
786
"D-Bus signal"
1403
787
pass
1404
788
1405
# GotSecret - signal
789
# ReceivedSecret - signal
1406
790
@dbus.service.signal(_interface)
1407
def GotSecret(self):
1408
"""D-Bus signal
1409
Is sent after a successful transfer of secret from the Mandos
1410
server to mandos-client
1411
"""
791
def ReceivedSecret(self):
792
"D-Bus signal"
1412
793
pass
1413
794
1414
795
# Rejected - signal
1415
@dbus.service.signal(_interface, signature="s")
1416
def Rejected(self, reason):
796
@dbus.service.signal(_interface)
797
def Rejected(self):
1417
798
"D-Bus signal"
1418
799
pass
1419
800
1420
# NeedApproval - signal
1421
@dbus.service.signal(_interface, signature="tb")
1422
def NeedApproval(self, timeout, default):
1423
"D-Bus signal"
1424
return self.need_approval()
1425
1426
## Methods
1427
1428
# Approve - method
1429
@dbus.service.method(_interface, in_signature="b")
1430
def Approve(self, value):
1431
self.approve(value)
1432
1433
# CheckedOK - method
1434
@dbus.service.method(_interface)
1435
def CheckedOK(self):
1436
self.checked_ok()
1437
1438
801
# Enable - method
1439
802
@dbus.service.method(_interface)
1440
803
def Enable(self):
1458
821
def StopChecker(self):
1459
822
self.stop_checker()
1460
823
1461
## Properties
1462
1463
# ApprovalPending - property
1464
@dbus_service_property(_interface, signature="b", access="read")
1465
def ApprovalPending_dbus_property(self):
1466
return dbus.Boolean(bool(self.approvals_pending))
1467
1468
# ApprovedByDefault - property
1469
@dbus_service_property(_interface, signature="b",
1470
access="readwrite")
1471
def ApprovedByDefault_dbus_property(self, value=None):
1472
if value is None: # get
1473
return dbus.Boolean(self.approved_by_default)
1474
self.approved_by_default = bool(value)
1475
1476
# ApprovalDelay - property
1477
@dbus_service_property(_interface, signature="t",
1478
access="readwrite")
1479
def ApprovalDelay_dbus_property(self, value=None):
1480
if value is None: # get
1481
return dbus.UInt64(self.approval_delay_milliseconds())
1482
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1483
1484
# ApprovalDuration - property
1485
@dbus_service_property(_interface, signature="t",
1486
access="readwrite")
1487
def ApprovalDuration_dbus_property(self, value=None):
1488
if value is None: # get
1489
return dbus.UInt64(timedelta_to_milliseconds(
1490
self.approval_duration))
1491
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1492
1493
# Name - property
1494
@dbus_service_property(_interface, signature="s", access="read")
1495
def Name_dbus_property(self):
824
# name - property
825
@dbus_service_property(_interface, signature=u"s", access=u"read")
826
def name_dbus_property(self):
1496
827
return dbus.String(self.name)
1497
828
1498
# Fingerprint - property
1499
@dbus_service_property(_interface, signature="s", access="read")
1500
def Fingerprint_dbus_property(self):
829
# fingerprint - property
830
@dbus_service_property(_interface, signature=u"s", access=u"read")
831
def fingerprint_dbus_property(self):
1501
832
return dbus.String(self.fingerprint)
1502
833
1503
# Host - property
1504
@dbus_service_property(_interface, signature="s",
1505
access="readwrite")
1506
def Host_dbus_property(self, value=None):
834
# host - property
835
@dbus_service_property(_interface, signature=u"s",
836
access=u"readwrite")
837
def host_dbus_property(self, value=None):
1507
838
if value is None: # get
1508
839
return dbus.String(self.host)
1509
self.host = unicode(value)
1510
1511
# Created - property
1512
@dbus_service_property(_interface, signature="s", access="read")
1513
def Created_dbus_property(self):
1514
return datetime_to_dbus(self.created)
1515
1516
# LastEnabled - property
1517
@dbus_service_property(_interface, signature="s", access="read")
1518
def LastEnabled_dbus_property(self):
1519
return datetime_to_dbus(self.last_enabled)
1520
1521
# Enabled - property
1522
@dbus_service_property(_interface, signature="b",
1523
access="readwrite")
1524
def Enabled_dbus_property(self, value=None):
840
self.host = value
841
# Emit D-Bus signal
842
self.PropertyChanged(dbus.String(u"host"),
843
dbus.String(value, variant_level=1))
844
845
# created - property
846
@dbus_service_property(_interface, signature=u"s", access=u"read")
847
def created_dbus_property(self):
848
return dbus.String(self._datetime_to_dbus(self.created))
849
850
# last_enabled - property
851
@dbus_service_property(_interface, signature=u"s", access=u"read")
852
def last_enabled_dbus_property(self):
853
if self.last_enabled is None:
854
return dbus.String(u"")
855
return dbus.String(self._datetime_to_dbus(self.last_enabled))
856
857
# enabled - property
858
@dbus_service_property(_interface, signature=u"b",
859
access=u"readwrite")
860
def enabled_dbus_property(self, value=None):
1525
861
if value is None: # get
1526
862
return dbus.Boolean(self.enabled)
1527
863
if value:
1529
865
else:
1530
866
self.disable()
1531
867
1532
# LastCheckedOK - property
1533
@dbus_service_property(_interface, signature="s",
1534
access="readwrite")
1535
def LastCheckedOK_dbus_property(self, value=None):
868
# last_checked_ok - property
869
@dbus_service_property(_interface, signature=u"s",
870
access=u"readwrite")
871
def last_checked_ok_dbus_property(self, value=None):
1536
872
if value is not None:
1537
873
self.checked_ok()
1538
874
return
1539
return datetime_to_dbus(self.last_checked_ok)
1540
1541
# LastCheckerStatus - property
1542
@dbus_service_property(_interface, signature="n",
1543
access="read")
1544
def LastCheckerStatus_dbus_property(self):
1545
return dbus.Int16(self.last_checker_status)
1546
1547
# Expires - property
1548
@dbus_service_property(_interface, signature="s", access="read")
1549
def Expires_dbus_property(self):
1550
return datetime_to_dbus(self.expires)
1551
1552
# LastApprovalRequest - property
1553
@dbus_service_property(_interface, signature="s", access="read")
1554
def LastApprovalRequest_dbus_property(self):
1555
return datetime_to_dbus(self.last_approval_request)
1556
1557
# Timeout - property
1558
@dbus_service_property(_interface, signature="t",
1559
access="readwrite")
1560
def Timeout_dbus_property(self, value=None):
875
if self.last_checked_ok is None:
876
return dbus.String(u"")
877
return dbus.String(self._datetime_to_dbus(self
878
.last_checked_ok))
879
880
# timeout - property
881
@dbus_service_property(_interface, signature=u"t",
882
access=u"readwrite")
883
def timeout_dbus_property(self, value=None):
1561
884
if value is None: # get
1562
885
return dbus.UInt64(self.timeout_milliseconds())
1563
old_timeout = self.timeout
1564
886
self.timeout = datetime.timedelta(0, 0, 0, value)
1565
# Reschedule disabling
1566
if self.enabled:
1567
now = datetime.datetime.utcnow()
1568
self.expires += self.timeout - old_timeout
1569
if self.expires <= now:
1570
# The timeout has passed
1571
self.disable()
1572
else:
1573
if (getattr(self, "disable_initiator_tag", None)
1574
is None):
1575
return
1576
gobject.source_remove(self.disable_initiator_tag)
1577
self.disable_initiator_tag = (
1578
gobject.timeout_add(
1579
timedelta_to_milliseconds(self.expires - now),
1580
self.disable))
1581
1582
# ExtendedTimeout - property
1583
@dbus_service_property(_interface, signature="t",
1584
access="readwrite")
1585
def ExtendedTimeout_dbus_property(self, value=None):
1586
if value is None: # get
1587
return dbus.UInt64(self.extended_timeout_milliseconds())
1588
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1589
1590
# Interval - property
1591
@dbus_service_property(_interface, signature="t",
1592
access="readwrite")
1593
def Interval_dbus_property(self, value=None):
887
# Emit D-Bus signal
888
self.PropertyChanged(dbus.String(u"timeout"),
889
dbus.UInt64(value, variant_level=1))
890
if getattr(self, u"disable_initiator_tag", None) is None:
891
return
892
# Reschedule timeout
893
gobject.source_remove(self.disable_initiator_tag)
894
self.disable_initiator_tag = None
895
time_to_die = (self.
896
_timedelta_to_milliseconds((self
897
.last_checked_ok
898
+ self.timeout)
899
- datetime.datetime
900
.utcnow()))
901
if time_to_die <= 0:
902
# The timeout has passed
903
self.disable()
904
else:
905
self.disable_initiator_tag = (gobject.timeout_add
906
(time_to_die, self.disable))
907
908
# interval - property
909
@dbus_service_property(_interface, signature=u"t",
910
access=u"readwrite")
911
def interval_dbus_property(self, value=None):
1594
912
if value is None: # get
1595
913
return dbus.UInt64(self.interval_milliseconds())
1596
914
self.interval = datetime.timedelta(0, 0, 0, value)
1597
if getattr(self, "checker_initiator_tag", None) is None:
915
# Emit D-Bus signal
916
self.PropertyChanged(dbus.String(u"interval"),
917
dbus.UInt64(value, variant_level=1))
918
if getattr(self, u"checker_initiator_tag", None) is None:
1598
919
return
1599
if self.enabled:
1600
# Reschedule checker run
1601
gobject.source_remove(self.checker_initiator_tag)
1602
self.checker_initiator_tag = (gobject.timeout_add
1603
(value, self.start_checker))
1604
self.start_checker() # Start one now, too
1605
1606
# Checker - property
1607
@dbus_service_property(_interface, signature="s",
1608
access="readwrite")
1609
def Checker_dbus_property(self, value=None):
920
# Reschedule checker run
921
gobject.source_remove(self.checker_initiator_tag)
922
self.checker_initiator_tag = (gobject.timeout_add
923
(value, self.start_checker))
924
self.start_checker() # Start one now, too
925
926
# checker - property
927
@dbus_service_property(_interface, signature=u"s",
928
access=u"readwrite")
929
def checker_dbus_property(self, value=None):
1610
930
if value is None: # get
1611
931
return dbus.String(self.checker_command)
1612
self.checker_command = unicode(value)
932
self.checker_command = value
933
# Emit D-Bus signal
934
self.PropertyChanged(dbus.String(u"checker"),
935
dbus.String(self.checker_command,
936
variant_level=1))
1613
937
1614
# CheckerRunning - property
1615
@dbus_service_property(_interface, signature="b",
1616
access="readwrite")
1617
def CheckerRunning_dbus_property(self, value=None):
938
# checker_running - property
939
@dbus_service_property(_interface, signature=u"b",
940
access=u"readwrite")
941
def checker_running_dbus_property(self, value=None):
1618
942
if value is None: # get
1619
943
return dbus.Boolean(self.checker is not None)
1620
944
if value:
1622
946
else:
1623
947
self.stop_checker()
1624
948
1625
# ObjectPath - property
1626
@dbus_service_property(_interface, signature="o", access="read")
1627
def ObjectPath_dbus_property(self):
949
# object_path - property
950
@dbus_service_property(_interface, signature=u"o", access=u"read")
951
def object_path_dbus_property(self):
1628
952
return self.dbus_object_path # is already a dbus.ObjectPath
1629
953
1630
# Secret = property
1631
@dbus_service_property(_interface, signature="ay",
1632
access="write", byte_arrays=True)
1633
def Secret_dbus_property(self, value):
954
# secret = property
955
@dbus_service_property(_interface, signature=u"ay",
956
access=u"write", byte_arrays=True)
957
def secret_dbus_property(self, value):
1634
958
self.secret = str(value)
1635
959
1636
960
del _interface
1637
961
1638
962
1639
class ProxyClient(object):
1640
def __init__(self, child_pipe, fpr, address):
1641
self._pipe = child_pipe
1642
self._pipe.send(('init', fpr, address))
1643
if not self._pipe.recv():
1644
raise KeyError()
1645
1646
def __getattribute__(self, name):
1647
if name == '_pipe':
1648
return super(ProxyClient, self).__getattribute__(name)
1649
self._pipe.send(('getattr', name))
1650
data = self._pipe.recv()
1651
if data[0] == 'data':
1652
return data[1]
1653
if data[0] == 'function':
1654
def func(*args, **kwargs):
1655
self._pipe.send(('funcall', name, args, kwargs))
1656
return self._pipe.recv()[1]
1657
return func
1658
1659
def __setattr__(self, name, value):
1660
if name == '_pipe':
1661
return super(ProxyClient, self).__setattr__(name, value)
1662
self._pipe.send(('setattr', name, value))
1663
1664
1665
963
class ClientHandler(socketserver.BaseRequestHandler, object):
1666
964
"""A class to handle client connections.
1667
965
1669
967
Note: This will run in its own forked process."""
1670
968
1671
969
def handle(self):
1672
with contextlib.closing(self.server.child_pipe) as child_pipe:
1673
logger.info("TCP connection from: %s",
1674
unicode(self.client_address))
1675
logger.debug("Pipe FD: %d",
1676
self.server.child_pipe.fileno())
1677
970
logger.info(u"TCP connection from: %s",
971
unicode(self.client_address))
972
logger.debug(u"IPC Pipe FD: %d", self.server.pipe[1])
973
# Open IPC pipe to parent process
974
with closing(os.fdopen(self.server.pipe[1], u"w", 1)) as ipc:
1678
975
session = (gnutls.connection
1679
976
.ClientSession(self.request,
1680
977
gnutls.connection
1681
978
.X509Credentials()))
1682
979
980
line = self.request.makefile().readline()
981
logger.debug(u"Protocol version: %r", line)
982
try:
983
if int(line.strip().split()[0]) > 1:
984
raise RuntimeError
985
except (ValueError, IndexError, RuntimeError), error:
986
logger.error(u"Unknown protocol version: %s", error)
987
return
988
1683
989
# Note: gnutls.connection.X509Credentials is really a
1684
990
# generic GnuTLS certificate credentials object so long as
1685
991
# no X.509 keys are added to it. Therefore, we can use it
1686
992
# here despite using OpenPGP certificates.
1687
993
1688
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1689
# "+AES-256-CBC", "+SHA1",
1690
# "+COMP-NULL", "+CTYPE-OPENPGP",
1691
# "+DHE-DSS"))
994
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
995
# u"+AES-256-CBC", u"+SHA1",
996
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
997
# u"+DHE-DSS"))
1692
998
# Use a fallback default, since this MUST be set.
1693
999
priority = self.server.gnutls_priority
1694
1000
if priority is None:
1695
priority = "NORMAL"
1001
priority = u"NORMAL"
1696
1002
(gnutls.library.functions
1697
1003
.gnutls_priority_set_direct(session._c_object,
1698
1004
priority, None))
1699
1005
1700
# Start communication using the Mandos protocol
1701
# Get protocol number
1702
line = self.request.makefile().readline()
1703
logger.debug("Protocol version: %r", line)
1704
try:
1705
if int(line.strip().split()[0]) > 1:
1706
raise RuntimeError(line)
1707
except (ValueError, IndexError, RuntimeError) as error:
1708
logger.error("Unknown protocol version: %s", error)
1709
return
1710
1711
# Start GnuTLS connection
1712
1006
try:
1713
1007
session.handshake()
1714
except gnutls.errors.GNUTLSError as error:
1715
logger.warning("Handshake failed: %s", error)
1008
except gnutls.errors.GNUTLSError, error:
1009
logger.warning(u"Handshake failed: %s", error)
1716
1010
# Do not run session.bye() here: the session is not
1717
1011
# established. Just abandon the request.
1718
1012
return
1719
logger.debug("Handshake succeeded")
1720
1721
approval_required = False
1013
logger.debug(u"Handshake succeeded")
1722
1014
try:
1723
try:
1724
fpr = self.fingerprint(self.peer_certificate
1725
(session))
1726
except (TypeError,
1727
gnutls.errors.GNUTLSError) as error:
1728
logger.warning("Bad certificate: %s", error)
1729
return
1730
logger.debug("Fingerprint: %s", fpr)
1731
1732
try:
1733
client = ProxyClient(child_pipe, fpr,
1734
self.client_address)
1735
except KeyError:
1736
return
1737
1738
if client.approval_delay:
1739
delay = client.approval_delay
1740
client.approvals_pending += 1
1741
approval_required = True
1742
1743
while True:
1744
if not client.enabled:
1745
logger.info("Client %s is disabled",
1746
client.name)
1747
if self.server.use_dbus:
1748
# Emit D-Bus signal
1749
client.Rejected("Disabled")
1750
return
1751
1752
if client.approved or not client.approval_delay:
1753
#We are approved or approval is disabled
1754
break
1755
elif client.approved is None:
1756
logger.info("Client %s needs approval",
1757
client.name)
1758
if self.server.use_dbus:
1759
# Emit D-Bus signal
1760
client.NeedApproval(
1761
client.approval_delay_milliseconds(),
1762
client.approved_by_default)
1763
else:
1764
logger.warning("Client %s was not approved",
1765
client.name)
1766
if self.server.use_dbus:
1767
# Emit D-Bus signal
1768
client.Rejected("Denied")
1769
return
1770
1771
#wait until timeout or approved
1772
time = datetime.datetime.now()
1773
client.changedstate.acquire()
1774
client.changedstate.wait(
1775
float(timedelta_to_milliseconds(delay)
1776
/ 1000))
1777
client.changedstate.release()
1778
time2 = datetime.datetime.now()
1779
if (time2 - time) >= delay:
1780
if not client.approved_by_default:
1781
logger.warning("Client %s timed out while"
1782
" waiting for approval",
1783
client.name)
1784
if self.server.use_dbus:
1785
# Emit D-Bus signal
1786
client.Rejected("Approval timed out")
1787
return
1788
else:
1789
break
1790
else:
1791
delay -= time2 - time
1792
1793
sent_size = 0
1794
while sent_size < len(client.secret):
1795
try:
1796
sent = session.send(client.secret[sent_size:])
1797
except gnutls.errors.GNUTLSError as error:
1798
logger.warning("gnutls send failed",
1799
exc_info=error)
1800
return
1801
logger.debug("Sent: %d, remaining: %d",
1802
sent, len(client.secret)
1803
- (sent_size + sent))
1804
sent_size += sent
1805
1806
logger.info("Sending secret to %s", client.name)
1807
# bump the timeout using extended_timeout
1808
client.bump_timeout(client.extended_timeout)
1809
if self.server.use_dbus:
1810
# Emit D-Bus signal
1811
client.GotSecret()
1015
fpr = self.fingerprint(self.peer_certificate(session))
1016
except (TypeError, gnutls.errors.GNUTLSError), error:
1017
logger.warning(u"Bad certificate: %s", error)
1018
session.bye()
1019
return
1020
logger.debug(u"Fingerprint: %s", fpr)
1812
1021
1813
finally:
1814
if approval_required:
1815
client.approvals_pending -= 1
1816
try:
1817
session.bye()
1818
except gnutls.errors.GNUTLSError as error:
1819
logger.warning("GnuTLS bye failed",
1820
exc_info=error)
1022
for c in self.server.clients:
1023
if c.fingerprint == fpr:
1024
client = c
1025
break
1026
else:
1027
ipc.write(u"NOTFOUND %s %s\n"
1028
% (fpr, unicode(self.client_address)))
1029
session.bye()
1030
return
1031
# Have to check if client.still_valid(), since it is
1032
# possible that the client timed out while establishing
1033
# the GnuTLS session.
1034
if not client.still_valid():
1035
ipc.write(u"INVALID %s\n" % client.name)
1036
session.bye()
1037
return
1038
ipc.write(u"SENDING %s\n" % client.name)
1039
sent_size = 0
1040
while sent_size < len(client.secret):
1041
sent = session.send(client.secret[sent_size:])
1042
logger.debug(u"Sent: %d, remaining: %d",
1043
sent, len(client.secret)
1044
- (sent_size + sent))
1045
sent_size += sent
1046
session.bye()
1821
1047
1822
1048
@staticmethod
1823
1049
def peer_certificate(session):
1833
1059
.gnutls_certificate_get_peers
1834
1060
(session._c_object, ctypes.byref(list_size)))
1835
1061
if not bool(cert_list) and list_size.value != 0:
1836
raise gnutls.errors.GNUTLSError("error getting peer"
1837
" certificate")
1062
raise gnutls.errors.GNUTLSError(u"error getting peer"
1063
u" certificate")
1838
1064
if list_size.value == 0:
1839
1065
return None
1840
1066
cert = cert_list[0]
1866
1092
if crtverify.value != 0:
1867
1093
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1868
1094
raise (gnutls.errors.CertificateSecurityError
1869
("Verify failed"))
1095
(u"Verify failed"))
1870
1096
# New buffer for the fingerprint
1871
1097
buf = ctypes.create_string_buffer(20)
1872
1098
buf_len = ctypes.c_size_t()
1879
1105
# Convert the buffer to a Python bytestring
1880
1106
fpr = ctypes.string_at(buf, buf_len.value)
1881
1107
# Convert the bytestring to hexadecimal notation
1882
hex_fpr = binascii.hexlify(fpr).upper()
1108
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1883
1109
return hex_fpr
1884
1110
1885
1111
1886
class MultiprocessingMixIn(object):
1887
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
1888
def sub_process_main(self, request, address):
1889
try:
1890
self.finish_request(request, address)
1891
except Exception:
1892
self.handle_error(request, address)
1893
self.close_request(request)
1894
1895
def process_request(self, request, address):
1896
"""Start a new process to process the request."""
1897
proc = multiprocessing.Process(target = self.sub_process_main,
1898
args = (request, address))
1899
proc.start()
1900
return proc
1901
1902
1903
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1904
""" adds a pipe to the MixIn """
1112
class ForkingMixInWithPipe(socketserver.ForkingMixIn, object):
1113
"""Like socketserver.ForkingMixIn, but also pass a pipe."""
1905
1114
def process_request(self, request, client_address):
1906
1115
"""Overrides and wraps the original process_request().
1907
1116
1908
1117
This function creates a new pipe in self.pipe
1909
1118
"""
1910
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1911
1912
proc = MultiprocessingMixIn.process_request(self, request,
1913
client_address)
1914
self.child_pipe.close()
1915
self.add_pipe(parent_pipe, proc)
1916
1917
def add_pipe(self, parent_pipe, proc):
1119
self.pipe = os.pipe()
1120
super(ForkingMixInWithPipe,
1121
self).process_request(request, client_address)
1122
os.close(self.pipe[1]) # close write end
1123
self.add_pipe(self.pipe[0])
1124
def add_pipe(self, pipe):
1918
1125
"""Dummy function; override as necessary"""
1919
raise NotImplementedError()
1920
1921
1922
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1126
os.close(pipe)
1127
1128
1129
class IPv6_TCPServer(ForkingMixInWithPipe,
1923
1130
socketserver.TCPServer, object):
1924
1131
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1925
1132
1929
1136
use_ipv6: Boolean; to use IPv6 or not
1930
1137
"""
1931
1138
def __init__(self, server_address, RequestHandlerClass,
1932
interface=None, use_ipv6=True, socketfd=None):
1933
"""If socketfd is set, use that file descriptor instead of
1934
creating a new one with socket.socket().
1935
"""
1139
interface=None, use_ipv6=True):
1936
1140
self.interface = interface
1937
1141
if use_ipv6:
1938
1142
self.address_family = socket.AF_INET6
1939
if socketfd is not None:
1940
# Save the file descriptor
1941
self.socketfd = socketfd
1942
# Save the original socket.socket() function
1943
self.socket_socket = socket.socket
1944
# To implement --socket, we monkey patch socket.socket.
1945
#
1946
# (When socketserver.TCPServer is a new-style class, we
1947
# could make self.socket into a property instead of monkey
1948
# patching socket.socket.)
1949
#
1950
# Create a one-time-only replacement for socket.socket()
1951
@functools.wraps(socket.socket)
1952
def socket_wrapper(*args, **kwargs):
1953
# Restore original function so subsequent calls are
1954
# not affected.
1955
socket.socket = self.socket_socket
1956
del self.socket_socket
1957
# This time only, return a new socket object from the
1958
# saved file descriptor.
1959
return socket.fromfd(self.socketfd, *args, **kwargs)
1960
# Replace socket.socket() function with wrapper
1961
socket.socket = socket_wrapper
1962
# The socketserver.TCPServer.__init__ will call
1963
# socket.socket(), which might be our replacement,
1964
# socket_wrapper(), if socketfd was set.
1965
1143
socketserver.TCPServer.__init__(self, server_address,
1966
1144
RequestHandlerClass)
1967
1968
1145
def server_bind(self):
1969
1146
"""This overrides the normal server_bind() function
1970
1147
to bind to an interface if one was specified, and also NOT to
1971
1148
bind to an address or port if they were not specified."""
1972
1149
if self.interface is not None:
1973
1150
if SO_BINDTODEVICE is None:
1974
logger.error("SO_BINDTODEVICE does not exist;"
1975
" cannot bind to interface %s",
1151
logger.error(u"SO_BINDTODEVICE does not exist;"
1152
u" cannot bind to interface %s",
1976
1153
self.interface)
1977
1154
else:
1978
1155
try:
1979
1156
self.socket.setsockopt(socket.SOL_SOCKET,
1980
1157
SO_BINDTODEVICE,
1981
str(self.interface + '\0'))
1982
except socket.error as error:
1983
if error.errno == errno.EPERM:
1984
logger.error("No permission to bind to"
1985
" interface %s", self.interface)
1986
elif error.errno == errno.ENOPROTOOPT:
1987
logger.error("SO_BINDTODEVICE not available;"
1988
" cannot bind to interface %s",
1989
self.interface)
1990
elif error.errno == errno.ENODEV:
1991
logger.error("Interface %s does not exist,"
1992
" cannot bind", self.interface)
1158
str(self.interface
1159
+ u'\0'))
1160
except socket.error, error:
1161
if error[0] == errno.EPERM:
1162
logger.error(u"No permission to"
1163
u" bind to interface %s",
1164
self.interface)
1165
elif error[0] == errno.ENOPROTOOPT:
1166
logger.error(u"SO_BINDTODEVICE not available;"
1167
u" cannot bind to interface %s",
1168
self.interface)
1993
1169
else:
1994
1170
raise
1995
1171
# Only bind(2) the socket if we really need to.
1996
1172
if self.server_address[0] or self.server_address[1]:
1997
1173
if not self.server_address[0]:
1998
1174
if self.address_family == socket.AF_INET6:
1999
any_address = "::" # in6addr_any
1175
any_address = u"::" # in6addr_any
2000
1176
else:
2001
any_address = "0.0.0.0" # INADDR_ANY
1177
any_address = socket.INADDR_ANY
2002
1178
self.server_address = (any_address,
2003
1179
self.server_address[1])
2004
1180
elif not self.server_address[1]:
2025
1201
"""
2026
1202
def __init__(self, server_address, RequestHandlerClass,
2027
1203
interface=None, use_ipv6=True, clients=None,
2028
gnutls_priority=None, use_dbus=True, socketfd=None):
1204
gnutls_priority=None, use_dbus=True):
2029
1205
self.enabled = False
2030
1206
self.clients = clients
2031
1207
if self.clients is None:
2032
self.clients = {}
1208
self.clients = set()
2033
1209
self.use_dbus = use_dbus
2034
1210
self.gnutls_priority = gnutls_priority
2035
1211
IPv6_TCPServer.__init__(self, server_address,
2036
1212
RequestHandlerClass,
2037
1213
interface = interface,
2038
use_ipv6 = use_ipv6,
2039
socketfd = socketfd)
1214
use_ipv6 = use_ipv6)
2040
1215
def server_activate(self):
2041
1216
if self.enabled:
2042
1217
return socketserver.TCPServer.server_activate(self)
2043
2044
1218
def enable(self):
2045
1219
self.enabled = True
2046
2047
def add_pipe(self, parent_pipe, proc):
1220
def add_pipe(self, pipe):
2048
1221
# Call "handle_ipc" for both data and EOF events
2049
gobject.io_add_watch(parent_pipe.fileno(),
2050
gobject.IO_IN | gobject.IO_HUP,
2051
functools.partial(self.handle_ipc,
2052
parent_pipe =
2053
parent_pipe,
2054
proc = proc))
2055
2056
def handle_ipc(self, source, condition, parent_pipe=None,
2057
proc = None, client_object=None):
2058
# error, or the other end of multiprocessing.Pipe has closed
2059
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2060
# Wait for other process to exit
2061
proc.join()
2062
return False
2063
2064
# Read a request from the child
2065
request = parent_pipe.recv()
2066
command = request[0]
2067
2068
if command == 'init':
2069
fpr = request[1]
2070
address = request[2]
2071
2072
for c in self.clients.itervalues():
2073
if c.fingerprint == fpr:
2074
client = c
2075
break
2076
else:
2077
logger.info("Client not found for fingerprint: %s, ad"
2078
"dress: %s", fpr, address)
2079
if self.use_dbus:
2080
# Emit D-Bus signal
2081
mandos_dbus_service.ClientNotFound(fpr,
2082
address[0])
2083
parent_pipe.send(False)
2084
return False
2085
2086
gobject.io_add_watch(parent_pipe.fileno(),
2087
gobject.IO_IN | gobject.IO_HUP,
2088
functools.partial(self.handle_ipc,
2089
parent_pipe =
2090
parent_pipe,
2091
proc = proc,
2092
client_object =
2093
client))
2094
parent_pipe.send(True)
2095
# remove the old hook in favor of the new above hook on
2096
# same fileno
2097
return False
2098
if command == 'funcall':
2099
funcname = request[1]
2100
args = request[2]
2101
kwargs = request[3]
2102
2103
parent_pipe.send(('data', getattr(client_object,
2104
funcname)(*args,
2105
**kwargs)))
2106
2107
if command == 'getattr':
2108
attrname = request[1]
2109
if callable(client_object.__getattribute__(attrname)):
2110
parent_pipe.send(('function',))
2111
else:
2112
parent_pipe.send(('data', client_object
2113
.__getattribute__(attrname)))
2114
2115
if command == 'setattr':
2116
attrname = request[1]
2117
value = request[2]
2118
setattr(client_object, attrname, value)
2119
1222
gobject.io_add_watch(pipe, gobject.IO_IN | gobject.IO_HUP,
1223
self.handle_ipc)
1224
def handle_ipc(self, source, condition, file_objects={}):
1225
condition_names = {
1226
gobject.IO_IN: u"IN", # There is data to read.
1227
gobject.IO_OUT: u"OUT", # Data can be written (without
1228
# blocking).
1229
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1230
gobject.IO_ERR: u"ERR", # Error condition.
1231
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1232
# broken, usually for pipes and
1233
# sockets).
1234
}
1235
conditions_string = ' | '.join(name
1236
for cond, name in
1237
condition_names.iteritems()
1238
if cond & condition)
1239
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1240
conditions_string)
1241
1242
# Turn the pipe file descriptor into a Python file object
1243
if source not in file_objects:
1244
file_objects[source] = os.fdopen(source, u"r", 1)
1245
1246
# Read a line from the file object
1247
cmdline = file_objects[source].readline()
1248
if not cmdline: # Empty line means end of file
1249
# close the IPC pipe
1250
file_objects[source].close()
1251
del file_objects[source]
1252
1253
# Stop calling this function
1254
return False
1255
1256
logger.debug(u"IPC command: %r", cmdline)
1257
1258
# Parse and act on command
1259
cmd, args = cmdline.rstrip(u"\r\n").split(None, 1)
1260
1261
if cmd == u"NOTFOUND":
1262
logger.warning(u"Client not found for fingerprint: %s",
1263
args)
1264
if self.use_dbus:
1265
# Emit D-Bus signal
1266
mandos_dbus_service.ClientNotFound(args)
1267
elif cmd == u"INVALID":
1268
for client in self.clients:
1269
if client.name == args:
1270
logger.warning(u"Client %s is invalid", args)
1271
if self.use_dbus:
1272
# Emit D-Bus signal
1273
client.Rejected()
1274
break
1275
else:
1276
logger.error(u"Unknown client %s is invalid", args)
1277
elif cmd == u"SENDING":
1278
for client in self.clients:
1279
if client.name == args:
1280
logger.info(u"Sending secret to %s", client.name)
1281
client.checked_ok()
1282
if self.use_dbus:
1283
# Emit D-Bus signal
1284
client.ReceivedSecret()
1285
break
1286
else:
1287
logger.error(u"Sending secret to unknown client %s",
1288
args)
1289
else:
1290
logger.error(u"Unknown IPC command: %r", cmdline)
1291
1292
# Keep calling this function
2120
1293
return True
2121
1294
2122
1295
2123
def rfc3339_duration_to_delta(duration):
2124
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2125
2126
>>> rfc3339_duration_to_delta("P7D")
2127
datetime.timedelta(7)
2128
>>> rfc3339_duration_to_delta("PT60S")
2129
datetime.timedelta(0, 60)
2130
>>> rfc3339_duration_to_delta("PT60M")
2131
datetime.timedelta(0, 3600)
2132
>>> rfc3339_duration_to_delta("PT24H")
2133
datetime.timedelta(1)
2134
>>> rfc3339_duration_to_delta("P1W")
2135
datetime.timedelta(7)
2136
>>> rfc3339_duration_to_delta("PT5M30S")
2137
datetime.timedelta(0, 330)
2138
>>> rfc3339_duration_to_delta("P1DT3M20S")
2139
datetime.timedelta(1, 200)
2140
"""
2141
2142
# Parsing an RFC 3339 duration with regular expressions is not
2143
# possible - there would have to be multiple places for the same
2144
# values, like seconds. The current code, while more esoteric, is
2145
# cleaner without depending on a parsing library. If Python had a
2146
# built-in library for parsing we would use it, but we'd like to
2147
# avoid excessive use of external libraries.
2148
2149
# New type for defining tokens, syntax, and semantics all-in-one
2150
Token = collections.namedtuple("Token",
2151
("regexp", # To match token; if
2152
# "value" is not None,
2153
# must have a "group"
2154
# containing digits
2155
"value", # datetime.timedelta or
2156
# None
2157
"followers")) # Tokens valid after
2158
# this token
2159
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2160
# the "duration" ABNF definition in RFC 3339, Appendix A.
2161
token_end = Token(re.compile(r"$"), None, frozenset())
2162
token_second = Token(re.compile(r"(\d+)S"),
2163
datetime.timedelta(seconds=1),
2164
frozenset((token_end,)))
2165
token_minute = Token(re.compile(r"(\d+)M"),
2166
datetime.timedelta(minutes=1),
2167
frozenset((token_second, token_end)))
2168
token_hour = Token(re.compile(r"(\d+)H"),
2169
datetime.timedelta(hours=1),
2170
frozenset((token_minute, token_end)))
2171
token_time = Token(re.compile(r"T"),
2172
None,
2173
frozenset((token_hour, token_minute,
2174
token_second)))
2175
token_day = Token(re.compile(r"(\d+)D"),
2176
datetime.timedelta(days=1),
2177
frozenset((token_time, token_end)))
2178
token_month = Token(re.compile(r"(\d+)M"),
2179
datetime.timedelta(weeks=4),
2180
frozenset((token_day, token_end)))
2181
token_year = Token(re.compile(r"(\d+)Y"),
2182
datetime.timedelta(weeks=52),
2183
frozenset((token_month, token_end)))
2184
token_week = Token(re.compile(r"(\d+)W"),
2185
datetime.timedelta(weeks=1),
2186
frozenset((token_end,)))
2187
token_duration = Token(re.compile(r"P"), None,
2188
frozenset((token_year, token_month,
2189
token_day, token_time,
2190
token_week))),
2191
# Define starting values
2192
value = datetime.timedelta() # Value so far
2193
found_token = None
2194
followers = frozenset(token_duration,) # Following valid tokens
2195
s = duration # String left to parse
2196
# Loop until end token is found
2197
while found_token is not token_end:
2198
# Search for any currently valid tokens
2199
for token in followers:
2200
match = token.regexp.match(s)
2201
if match is not None:
2202
# Token found
2203
if token.value is not None:
2204
# Value found, parse digits
2205
factor = int(match.group(1), 10)
2206
# Add to value so far
2207
value += factor * token.value
2208
# Strip token from string
2209
s = token.regexp.sub("", s, 1)
2210
# Go to found token
2211
found_token = token
2212
# Set valid next tokens
2213
followers = found_token.followers
2214
break
2215
else:
2216
# No currently valid tokens were found
2217
raise ValueError("Invalid RFC 3339 duration")
2218
# End token found
2219
return value
2220
2221
2222
1296
def string_to_delta(interval):
2223
1297
"""Parse a string and return a datetime.timedelta
2224
1298
2225
>>> string_to_delta('7d')
1299
>>> string_to_delta(u'7d')
2226
1300
datetime.timedelta(7)
2227
>>> string_to_delta('60s')
1301
>>> string_to_delta(u'60s')
2228
1302
datetime.timedelta(0, 60)
2229
>>> string_to_delta('60m')
1303
>>> string_to_delta(u'60m')
2230
1304
datetime.timedelta(0, 3600)
2231
>>> string_to_delta('24h')
1305
>>> string_to_delta(u'24h')
2232
1306
datetime.timedelta(1)
2233
>>> string_to_delta('1w')
1307
>>> string_to_delta(u'1w')
2234
1308
datetime.timedelta(7)
2235
>>> string_to_delta('5m 30s')
1309
>>> string_to_delta(u'5m 30s')
2236
1310
datetime.timedelta(0, 330)
2237
1311
"""
2238
2239
try:
2240
return rfc3339_duration_to_delta(interval)
2241
except ValueError:
2242
pass
2243
2244
1312
timevalue = datetime.timedelta(0)
2245
1313
for s in interval.split():
2246
1314
try:
2247
1315
suffix = unicode(s[-1])
2248
1316
value = int(s[:-1])
2249
if suffix == "d":
1317
if suffix == u"d":
2250
1318
delta = datetime.timedelta(value)
2251
elif suffix == "s":
1319
elif suffix == u"s":
2252
1320
delta = datetime.timedelta(0, value)
2253
elif suffix == "m":
1321
elif suffix == u"m":
2254
1322
delta = datetime.timedelta(0, 0, 0, 0, value)
2255
elif suffix == "h":
1323
elif suffix == u"h":
2256
1324
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
2257
elif suffix == "w":
1325
elif suffix == u"w":
2258
1326
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2259
1327
else:
2260
raise ValueError("Unknown suffix {0!r}"
2261
.format(suffix))
2262
except IndexError as e:
2263
raise ValueError(*(e.args))
1328
raise ValueError
1329
except (ValueError, IndexError):
1330
raise ValueError
2264
1331
timevalue += delta
2265
1332
return timevalue
2266
1333
2267
1334
1335
def if_nametoindex(interface):
1336
"""Call the C function if_nametoindex(), or equivalent
1337
1338
Note: This function cannot accept a unicode string."""
1339
global if_nametoindex
1340
try:
1341
if_nametoindex = (ctypes.cdll.LoadLibrary
1342
(ctypes.util.find_library(u"c"))
1343
.if_nametoindex)
1344
except (OSError, AttributeError):
1345
logger.warning(u"Doing if_nametoindex the hard way")
1346
def if_nametoindex(interface):
1347
"Get an interface index the hard way, i.e. using fcntl()"
1348
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1349
with closing(socket.socket()) as s:
1350
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1351
struct.pack(str(u"16s16x"),
1352
interface))
1353
interface_index = struct.unpack(str(u"I"),
1354
ifreq[16:20])[0]
1355
return interface_index
1356
return if_nametoindex(interface)
1357
1358
2268
1359
def daemon(nochdir = False, noclose = False):
2269
1360
"""See daemon(3). Standard BSD Unix function.
2270
1361
2273
1364
sys.exit()
2274
1365
os.setsid()
2275
1366
if not nochdir:
2276
os.chdir("/")
1367
os.chdir(u"/")
2277
1368
if os.fork():
2278
1369
sys.exit()
2279
1370
if not noclose:
2280
1371
# Close all standard open file descriptors
2281
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1372
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2282
1373
if not stat.S_ISCHR(os.fstat(null).st_mode):
2283
1374
raise OSError(errno.ENODEV,
2284
"{0} not a character device"
2285
.format(os.devnull))
1375
u"/dev/null not a character device")
2286
1376
os.dup2(null, sys.stdin.fileno())
2287
1377
os.dup2(null, sys.stdout.fileno())
2288
1378
os.dup2(null, sys.stderr.fileno())
2295
1385
##################################################################
2296
1386
# Parsing of options, both command line and config file
2297
1387
2298
parser = argparse.ArgumentParser()
2299
parser.add_argument("-v", "--version", action="version",
2300
version = "%(prog)s {0}".format(version),
2301
help="show version number and exit")
2302
parser.add_argument("-i", "--interface", metavar="IF",
2303
help="Bind to interface IF")
2304
parser.add_argument("-a", "--address",
2305
help="Address to listen for requests on")
2306
parser.add_argument("-p", "--port", type=int,
2307
help="Port number to receive requests on")
2308
parser.add_argument("--check", action="store_true",
2309
help="Run self-test")
2310
parser.add_argument("--debug", action="store_true",
2311
help="Debug mode; run in foreground and log"
2312
" to terminal", default=None)
2313
parser.add_argument("--debuglevel", metavar="LEVEL",
2314
help="Debug level for stdout output")
2315
parser.add_argument("--priority", help="GnuTLS"
2316
" priority string (see GnuTLS documentation)")
2317
parser.add_argument("--servicename",
2318
metavar="NAME", help="Zeroconf service name")
2319
parser.add_argument("--configdir",
2320
default="/etc/mandos", metavar="DIR",
2321
help="Directory to search for configuration"
2322
" files")
2323
parser.add_argument("--no-dbus", action="store_false",
2324
dest="use_dbus", help="Do not provide D-Bus"
2325
" system bus interface", default=None)
2326
parser.add_argument("--no-ipv6", action="store_false",
2327
dest="use_ipv6", help="Do not use IPv6",
2328
default=None)
2329
parser.add_argument("--no-restore", action="store_false",
2330
dest="restore", help="Do not restore stored"
2331
" state", default=None)
2332
parser.add_argument("--socket", type=int,
2333
help="Specify a file descriptor to a network"
2334
" socket to use instead of creating one")
2335
parser.add_argument("--statedir", metavar="DIR",
2336
help="Directory to save/restore state in")
2337
parser.add_argument("--foreground", action="store_true",
2338
help="Run in foreground", default=None)
2339
2340
options = parser.parse_args()
1388
parser = optparse.OptionParser(version = "%%prog %s" % version)
1389
parser.add_option("-i", u"--interface", type=u"string",
1390
metavar="IF", help=u"Bind to interface IF")
1391
parser.add_option("-a", u"--address", type=u"string",
1392
help=u"Address to listen for requests on")
1393
parser.add_option("-p", u"--port", type=u"int",
1394
help=u"Port number to receive requests on")
1395
parser.add_option("--check", action=u"store_true",
1396
help=u"Run self-test")
1397
parser.add_option("--debug", action=u"store_true",
1398
help=u"Debug mode; run in foreground and log to"
1399
u" terminal")
1400
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1401
u" priority string (see GnuTLS documentation)")
1402
parser.add_option("--servicename", type=u"string",
1403
metavar=u"NAME", help=u"Zeroconf service name")
1404
parser.add_option("--configdir", type=u"string",
1405
default=u"/etc/mandos", metavar=u"DIR",
1406
help=u"Directory to search for configuration"
1407
u" files")
1408
parser.add_option("--no-dbus", action=u"store_false",
1409
dest=u"use_dbus", help=u"Do not provide D-Bus"
1410
u" system bus interface")
1411
parser.add_option("--no-ipv6", action=u"store_false",
1412
dest=u"use_ipv6", help=u"Do not use IPv6")
1413
options = parser.parse_args()[0]
2341
1414
2342
1415
if options.check:
2343
1416
import doctest
2344
fail_count, test_count = doctest.testmod()
2345
sys.exit(os.EX_OK if fail_count == 0 else 1)
1417
doctest.testmod()
1418
sys.exit()
2346
1419
2347
1420
# Default values for config file for server-global settings
2348
server_defaults = { "interface": "",
2349
"address": "",
2350
"port": "",
2351
"debug": "False",
2352
"priority":
2353
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:+SIGN-RSA-SHA224:+SIGN-RSA-RMD160",
2354
"servicename": "Mandos",
2355
"use_dbus": "True",
2356
"use_ipv6": "True",
2357
"debuglevel": "",
2358
"restore": "True",
2359
"socket": "",
2360
"statedir": "/var/lib/mandos",
2361
"foreground": "False",
1421
server_defaults = { u"interface": u"",
1422
u"address": u"",
1423
u"port": u"",
1424
u"debug": u"False",
1425
u"priority":
1426
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1427
u"servicename": u"Mandos",
1428
u"use_dbus": u"True",
1429
u"use_ipv6": u"True",
2362
1430
}
2363
1431
2364
1432
# Parse config file for server-global settings
2365
1433
server_config = configparser.SafeConfigParser(server_defaults)
2366
1434
del server_defaults
2367
1435
server_config.read(os.path.join(options.configdir,
2368
"mandos.conf"))
1436
u"mandos.conf"))
2369
1437
# Convert the SafeConfigParser object to a dict
2370
1438
server_settings = server_config.defaults()
2371
1439
# Use the appropriate methods on the non-string config options
2372
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
2373
server_settings[option] = server_config.getboolean("DEFAULT",
1440
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1441
server_settings[option] = server_config.getboolean(u"DEFAULT",
2374
1442
option)
2375
1443
if server_settings["port"]:
2376
server_settings["port"] = server_config.getint("DEFAULT",
2377
"port")
2378
if server_settings["socket"]:
2379
server_settings["socket"] = server_config.getint("DEFAULT",
2380
"socket")
2381
# Later, stdin will, and stdout and stderr might, be dup'ed
2382
# over with an opened os.devnull. But we don't want this to
2383
# happen with a supplied network socket.
2384
if 0 <= server_settings["socket"] <= 2:
2385
server_settings["socket"] = os.dup(server_settings
2386
["socket"])
1444
server_settings["port"] = server_config.getint(u"DEFAULT",
1445
u"port")
2387
1446
del server_config
2388
1447
2389
1448
# Override the settings from the config file with command line
2390
1449
# options, if set.
2391
for option in ("interface", "address", "port", "debug",
2392
"priority", "servicename", "configdir",
2393
"use_dbus", "use_ipv6", "debuglevel", "restore",
2394
"statedir", "socket", "foreground"):
1450
for option in (u"interface", u"address", u"port", u"debug",
1451
u"priority", u"servicename", u"configdir",
1452
u"use_dbus", u"use_ipv6"):
2395
1453
value = getattr(options, option)
2396
1454
if value is not None:
2397
1455
server_settings[option] = value
2400
1458
for option in server_settings.keys():
2401
1459
if type(server_settings[option]) is str:
2402
1460
server_settings[option] = unicode(server_settings[option])
2403
# Force all boolean options to be boolean
2404
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2405
"foreground"):
2406
server_settings[option] = bool(server_settings[option])
2407
# Debug implies foreground
2408
if server_settings["debug"]:
2409
server_settings["foreground"] = True
2410
1461
# Now we have our good server settings in "server_settings"
2411
1462
2412
1463
##################################################################
2413
1464
2414
1465
# For convenience
2415
debug = server_settings["debug"]
2416
debuglevel = server_settings["debuglevel"]
2417
use_dbus = server_settings["use_dbus"]
2418
use_ipv6 = server_settings["use_ipv6"]
2419
stored_state_path = os.path.join(server_settings["statedir"],
2420
stored_state_file)
2421
foreground = server_settings["foreground"]
2422
2423
if debug:
2424
initlogger(debug, logging.DEBUG)
2425
else:
2426
if not debuglevel:
2427
initlogger(debug)
2428
else:
2429
level = getattr(logging, debuglevel.upper())
2430
initlogger(debug, level)
2431
2432
if server_settings["servicename"] != "Mandos":
1466
debug = server_settings[u"debug"]
1467
use_dbus = server_settings[u"use_dbus"]
1468
use_ipv6 = server_settings[u"use_ipv6"]
1469
1470
if not debug:
1471
syslogger.setLevel(logging.WARNING)
1472
console.setLevel(logging.WARNING)
1473
1474
if server_settings[u"servicename"] != u"Mandos":
2433
1475
syslogger.setFormatter(logging.Formatter
2434
('Mandos ({0}) [%(process)d]:'
2435
' %(levelname)s: %(message)s'
2436
.format(server_settings
2437
["servicename"])))
1476
(u'Mandos (%s) [%%(process)d]:'
1477
u' %%(levelname)s: %%(message)s'
1478
% server_settings[u"servicename"]))
2438
1479
2439
1480
# Parse config file with clients
2440
client_config = configparser.SafeConfigParser(Client
2441
.client_defaults)
2442
client_config.read(os.path.join(server_settings["configdir"],
2443
"clients.conf"))
1481
client_defaults = { u"timeout": u"1h",
1482
u"interval": u"5m",
1483
u"checker": u"fping -q -- %%(host)s",
1484
u"host": u"",
1485
}
1486
client_config = configparser.SafeConfigParser(client_defaults)
1487
client_config.read(os.path.join(server_settings[u"configdir"],
1488
u"clients.conf"))
2444
1489
2445
1490
global mandos_dbus_service
2446
1491
mandos_dbus_service = None
2447
1492
2448
tcp_server = MandosServer((server_settings["address"],
2449
server_settings["port"]),
1493
tcp_server = MandosServer((server_settings[u"address"],
1494
server_settings[u"port"]),
2450
1495
ClientHandler,
2451
interface=(server_settings["interface"]
2452
or None),
1496
interface=server_settings[u"interface"],
2453
1497
use_ipv6=use_ipv6,
2454
1498
gnutls_priority=
2455
server_settings["priority"],
2456
use_dbus=use_dbus,
2457
socketfd=(server_settings["socket"]
2458
or None))
2459
if not foreground:
2460
pidfilename = "/run/mandos.pid"
2461
if not os.path.isdir("/run/."):
2462
pidfilename = "/var/run/mandos.pid"
2463
pidfile = None
2464
try:
2465
pidfile = open(pidfilename, "w")
2466
except IOError as e:
2467
logger.error("Could not open file %r", pidfilename,
2468
exc_info=e)
1499
server_settings[u"priority"],
1500
use_dbus=use_dbus)
1501
pidfilename = u"/var/run/mandos.pid"
1502
try:
1503
pidfile = open(pidfilename, u"w")
1504
except IOError:
1505
logger.error(u"Could not open file %r", pidfilename)
2469
1506
2470
for name in ("_mandos", "mandos", "nobody"):
1507
try:
1508
uid = pwd.getpwnam(u"_mandos").pw_uid
1509
gid = pwd.getpwnam(u"_mandos").pw_gid
1510
except KeyError:
2471
1511
try:
2472
uid = pwd.getpwnam(name).pw_uid
2473
gid = pwd.getpwnam(name).pw_gid
2474
break
1512
uid = pwd.getpwnam(u"mandos").pw_uid
1513
gid = pwd.getpwnam(u"mandos").pw_gid
2475
1514
except KeyError:
2476
continue
2477
else:
2478
uid = 65534
2479
gid = 65534
1515
try:
1516
uid = pwd.getpwnam(u"nobody").pw_uid
1517
gid = pwd.getpwnam(u"nobody").pw_gid
1518
except KeyError:
1519
uid = 65534
1520
gid = 65534
2480
1521
try:
2481
1522
os.setgid(gid)
2482
1523
os.setuid(uid)
2483
except OSError as error:
2484
if error.errno != errno.EPERM:
2485
raise
1524
except OSError, error:
1525
if error[0] != errno.EPERM:
1526
raise error
2486
1527
1528
# Enable all possible GnuTLS debugging
2487
1529
if debug:
2488
# Enable all possible GnuTLS debugging
2489
2490
1530
# "Use a log level over 10 to enable all debugging options."
2491
1531
# - GnuTLS manual
2492
1532
gnutls.library.functions.gnutls_global_set_log_level(11)
2493
1533
2494
1534
@gnutls.library.types.gnutls_log_func
2495
1535
def debug_gnutls(level, string):
2496
logger.debug("GnuTLS: %s", string[:-1])
1536
logger.debug(u"GnuTLS: %s", string[:-1])
2497
1537
2498
1538
(gnutls.library.functions
2499
1539
.gnutls_global_set_log_function(debug_gnutls))
2500
2501
# Redirect stdin so all checkers get /dev/null
2502
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2503
os.dup2(null, sys.stdin.fileno())
2504
if null > 2:
2505
os.close(null)
2506
2507
# Need to fork before connecting to D-Bus
2508
if not foreground:
2509
# Close all input and output, do double fork, etc.
2510
daemon()
2511
2512
# multiprocessing will use threads, so before we use gobject we
2513
# need to inform gobject that threads will be used.
2514
gobject.threads_init()
2515
1540
2516
1541
global main_loop
2517
1542
# From the Avahi example code
2518
DBusGMainLoop(set_as_default=True)
1543
DBusGMainLoop(set_as_default=True )
2519
1544
main_loop = gobject.MainLoop()
2520
1545
bus = dbus.SystemBus()
2521
1546
# End of Avahi example code
2522
1547
if use_dbus:
2523
try:
2524
bus_name = dbus.service.BusName("se.recompile.Mandos",
2525
bus, do_not_queue=True)
2526
old_bus_name = (dbus.service.BusName
2527
("se.bsnet.fukt.Mandos", bus,
2528
do_not_queue=True))
2529
except dbus.exceptions.NameExistsException as e:
2530
logger.error("Disabling D-Bus:", exc_info=e)
2531
use_dbus = False
2532
server_settings["use_dbus"] = False
2533
tcp_server.use_dbus = False
1548
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos", bus)
2534
1549
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2535
service = AvahiServiceToSyslog(name =
2536
server_settings["servicename"],
2537
servicetype = "_mandos._tcp",
2538
protocol = protocol, bus = bus)
1550
service = AvahiService(name = server_settings[u"servicename"],
1551
servicetype = u"_mandos._tcp",
1552
protocol = protocol, bus = bus)
2539
1553
if server_settings["interface"]:
2540
1554
service.interface = (if_nametoindex
2541
(str(server_settings["interface"])))
2542
2543
global multiprocessing_manager
2544
multiprocessing_manager = multiprocessing.Manager()
1555
(str(server_settings[u"interface"])))
2545
1556
2546
1557
client_class = Client
2547
1558
if use_dbus:
2548
1559
client_class = functools.partial(ClientDBus, bus = bus)
2549
2550
client_settings = Client.config_parser(client_config)
2551
old_client_settings = {}
2552
clients_data = {}
2553
2554
# This is used to redirect stdout and stderr for checker processes
2555
global wnull
2556
wnull = open(os.devnull, "w") # A writable /dev/null
2557
# Only used if server is running in foreground but not in debug
2558
# mode
2559
if debug or not foreground:
2560
wnull.close()
2561
2562
# Get client data and settings from last running state.
2563
if server_settings["restore"]:
2564
try:
2565
with open(stored_state_path, "rb") as stored_state:
2566
clients_data, old_client_settings = (pickle.load
2567
(stored_state))
2568
os.remove(stored_state_path)
2569
except IOError as e:
2570
if e.errno == errno.ENOENT:
2571
logger.warning("Could not load persistent state: {0}"
2572
.format(os.strerror(e.errno)))
2573
else:
2574
logger.critical("Could not load persistent state:",
2575
exc_info=e)
2576
raise
2577
except EOFError as e:
2578
logger.warning("Could not load persistent state: "
2579
"EOFError:", exc_info=e)
2580
2581
with PGPEngine() as pgp:
2582
for client_name, client in clients_data.iteritems():
2583
# Skip removed clients
2584
if client_name not in client_settings:
2585
continue
2586
2587
# Decide which value to use after restoring saved state.
2588
# We have three different values: Old config file,
2589
# new config file, and saved state.
2590
# New config value takes precedence if it differs from old
2591
# config value, otherwise use saved state.
2592
for name, value in client_settings[client_name].items():
2593
try:
2594
# For each value in new config, check if it
2595
# differs from the old config value (Except for
2596
# the "secret" attribute)
2597
if (name != "secret" and
2598
value != old_client_settings[client_name]
2599
[name]):
2600
client[name] = value
2601
except KeyError:
2602
pass
2603
2604
# Clients who has passed its expire date can still be
2605
# enabled if its last checker was successful. Clients
2606
# whose checker succeeded before we stored its state is
2607
# assumed to have successfully run all checkers during
2608
# downtime.
2609
if client["enabled"]:
2610
if datetime.datetime.utcnow() >= client["expires"]:
2611
if not client["last_checked_ok"]:
2612
logger.warning(
2613
"disabling client {0} - Client never "
2614
"performed a successful checker"
2615
.format(client_name))
2616
client["enabled"] = False
2617
elif client["last_checker_status"] != 0:
2618
logger.warning(
2619
"disabling client {0} - Client "
2620
"last checker failed with error code {1}"
2621
.format(client_name,
2622
client["last_checker_status"]))
2623
client["enabled"] = False
2624
else:
2625
client["expires"] = (datetime.datetime
2626
.utcnow()
2627
+ client["timeout"])
2628
logger.debug("Last checker succeeded,"
2629
" keeping {0} enabled"
2630
.format(client_name))
2631
try:
2632
client["secret"] = (
2633
pgp.decrypt(client["encrypted_secret"],
2634
client_settings[client_name]
2635
["secret"]))
2636
except PGPError:
2637
# If decryption fails, we use secret from new settings
2638
logger.debug("Failed to decrypt {0} old secret"
2639
.format(client_name))
2640
client["secret"] = (
2641
client_settings[client_name]["secret"])
2642
2643
# Add/remove clients based on new changes made to config
2644
for client_name in (set(old_client_settings)
2645
- set(client_settings)):
2646
del clients_data[client_name]
2647
for client_name in (set(client_settings)
2648
- set(old_client_settings)):
2649
clients_data[client_name] = client_settings[client_name]
2650
2651
# Create all client objects
2652
for client_name, client in clients_data.iteritems():
2653
tcp_server.clients[client_name] = client_class(
2654
name = client_name, settings = client,
2655
server_settings = server_settings)
2656
1560
tcp_server.clients.update(set(
1561
client_class(name = section,
1562
config= dict(client_config.items(section)))
1563
for section in client_config.sections()))
2657
1564
if not tcp_server.clients:
2658
logger.warning("No clients defined")
2659
2660
if not foreground:
2661
if pidfile is not None:
2662
try:
2663
with pidfile:
2664
pid = os.getpid()
2665
pidfile.write(str(pid) + "\n".encode("utf-8"))
2666
except IOError:
2667
logger.error("Could not write to file %r with PID %d",
2668
pidfilename, pid)
1565
logger.warning(u"No clients defined")
1566
1567
if debug:
1568
# Redirect stdin so all checkers get /dev/null
1569
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1570
os.dup2(null, sys.stdin.fileno())
1571
if null > 2:
1572
os.close(null)
1573
else:
1574
# No console logging
1575
logger.removeHandler(console)
1576
# Close all input and output, do double fork, etc.
1577
daemon()
1578
1579
try:
1580
with closing(pidfile):
1581
pid = os.getpid()
1582
pidfile.write(str(pid) + "\n")
2669
1583
del pidfile
2670
del pidfilename
2671
1584
except IOError:
1585
logger.error(u"Could not write to file %r with PID %d",
1586
pidfilename, pid)
1587
except NameError:
1588
# "pidfile" was never created
1589
pass
1590
del pidfilename
1591
1592
def cleanup():
1593
"Cleanup function; run on exit"
1594
service.cleanup()
1595
1596
while tcp_server.clients:
1597
client = tcp_server.clients.pop()
1598
client.disable_hook = None
1599
client.disable()
1600
1601
atexit.register(cleanup)
1602
1603
if not debug:
1604
signal.signal(signal.SIGINT, signal.SIG_IGN)
2672
1605
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2673
1606
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2674
1607
2675
1608
if use_dbus:
2676
@alternate_dbus_interfaces({"se.recompile.Mandos":
2677
"se.bsnet.fukt.Mandos"})
2678
class MandosDBusService(DBusObjectWithProperties):
1609
class MandosDBusService(dbus.service.Object):
2679
1610
"""A D-Bus proxy object"""
2680
1611
def __init__(self):
2681
dbus.service.Object.__init__(self, bus, "/")
2682
_interface = "se.recompile.Mandos"
2683
2684
@dbus_interface_annotations(_interface)
2685
def _foo(self):
2686
return { "org.freedesktop.DBus.Property"
2687
".EmitsChangedSignal":
2688
"false"}
2689
2690
@dbus.service.signal(_interface, signature="o")
2691
def ClientAdded(self, objpath):
2692
"D-Bus signal"
2693
pass
2694
2695
@dbus.service.signal(_interface, signature="ss")
2696
def ClientNotFound(self, fingerprint, address):
2697
"D-Bus signal"
2698
pass
2699
2700
@dbus.service.signal(_interface, signature="os")
1612
dbus.service.Object.__init__(self, bus, u"/")
1613
_interface = u"se.bsnet.fukt.Mandos"
1614
1615
@dbus.service.signal(_interface, signature=u"oa{sv}")
1616
def ClientAdded(self, objpath, properties):
1617
"D-Bus signal"
1618
pass
1619
1620
@dbus.service.signal(_interface, signature=u"s")
1621
def ClientNotFound(self, fingerprint):
1622
"D-Bus signal"
1623
pass
1624
1625
@dbus.service.signal(_interface, signature=u"os")
2701
1626
def ClientRemoved(self, objpath, name):
2702
1627
"D-Bus signal"
2703
1628
pass
2704
1629
2705
@dbus.service.method(_interface, out_signature="ao")
1630
@dbus.service.method(_interface, out_signature=u"ao")
2706
1631
def GetAllClients(self):
2707
1632
"D-Bus method"
2708
1633
return dbus.Array(c.dbus_object_path
2709
for c in
2710
tcp_server.clients.itervalues())
1634
for c in tcp_server.clients)
2711
1635
2712
1636
@dbus.service.method(_interface,
2713
out_signature="a{oa{sv}}")
1637
out_signature=u"a{oa{sv}}")
2714
1638
def GetAllClientsWithProperties(self):
2715
1639
"D-Bus method"
2716
1640
return dbus.Dictionary(
2717
((c.dbus_object_path, c.GetAll(""))
2718
for c in tcp_server.clients.itervalues()),
2719
signature="oa{sv}")
1641
((c.dbus_object_path, c.GetAll(u""))
1642
for c in tcp_server.clients),
1643
signature=u"oa{sv}")
2720
1644
2721
@dbus.service.method(_interface, in_signature="o")
1645
@dbus.service.method(_interface, in_signature=u"o")
2722
1646
def RemoveClient(self, object_path):
2723
1647
"D-Bus method"
2724
for c in tcp_server.clients.itervalues():
1648
for c in tcp_server.clients:
2725
1649
if c.dbus_object_path == object_path:
2726
del tcp_server.clients[c.name]
1650
tcp_server.clients.remove(c)
2727
1651
c.remove_from_connection()
2728
1652
# Don't signal anything except ClientRemoved
2729
c.disable(quiet=True)
1653
c.disable(signal=False)
2730
1654
# Emit D-Bus signal
2731
1655
self.ClientRemoved(object_path, c.name)
2732
1656
return
2733
raise KeyError(object_path)
1657
raise KeyError
2734
1658
2735
1659
del _interface
2736
1660
2737
1661
mandos_dbus_service = MandosDBusService()
2738
1662
2739
def cleanup():
2740
"Cleanup function; run on exit"
2741
service.cleanup()
2742
2743
multiprocessing.active_children()
2744
wnull.close()
2745
if not (tcp_server.clients or client_settings):
2746
return
2747
2748
# Store client before exiting. Secrets are encrypted with key
2749
# based on what config file has. If config file is
2750
# removed/edited, old secret will thus be unrecovable.
2751
clients = {}
2752
with PGPEngine() as pgp:
2753
for client in tcp_server.clients.itervalues():
2754
key = client_settings[client.name]["secret"]
2755
client.encrypted_secret = pgp.encrypt(client.secret,
2756
key)
2757
client_dict = {}
2758
2759
# A list of attributes that can not be pickled
2760
# + secret.
2761
exclude = set(("bus", "changedstate", "secret",
2762
"checker", "server_settings"))
2763
for name, typ in (inspect.getmembers
2764
(dbus.service.Object)):
2765
exclude.add(name)
2766
2767
client_dict["encrypted_secret"] = (client
2768
.encrypted_secret)
2769
for attr in client.client_structure:
2770
if attr not in exclude:
2771
client_dict[attr] = getattr(client, attr)
2772
2773
clients[client.name] = client_dict
2774
del client_settings[client.name]["secret"]
2775
2776
try:
2777
with (tempfile.NamedTemporaryFile
2778
(mode='wb', suffix=".pickle", prefix='clients-',
2779
dir=os.path.dirname(stored_state_path),
2780
delete=False)) as stored_state:
2781
pickle.dump((clients, client_settings), stored_state)
2782
tempname=stored_state.name
2783
os.rename(tempname, stored_state_path)
2784
except (IOError, OSError) as e:
2785
if not debug:
2786
try:
2787
os.remove(tempname)
2788
except NameError:
2789
pass
2790
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
2791
logger.warning("Could not save persistent state: {0}"
2792
.format(os.strerror(e.errno)))
2793
else:
2794
logger.warning("Could not save persistent state:",
2795
exc_info=e)
2796
raise
2797
2798
# Delete all clients, and settings from config
2799
while tcp_server.clients:
2800
name, client = tcp_server.clients.popitem()
2801
if use_dbus:
2802
client.remove_from_connection()
2803
# Don't signal anything except ClientRemoved
2804
client.disable(quiet=True)
2805
if use_dbus:
2806
# Emit D-Bus signal
2807
mandos_dbus_service.ClientRemoved(client
2808
.dbus_object_path,
2809
client.name)
2810
client_settings.clear()
2811
2812
atexit.register(cleanup)
2813
2814
for client in tcp_server.clients.itervalues():
1663
for client in tcp_server.clients:
2815
1664
if use_dbus:
2816
1665
# Emit D-Bus signal
2817
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2818
# Need to initiate checking of clients
2819
if client.enabled:
2820
client.init_checker()
1666
mandos_dbus_service.ClientAdded(client.dbus_object_path,
1667
client.GetAll(u""))
1668
client.enable()
2821
1669
2822
1670
tcp_server.enable()
2823
1671
tcp_server.server_activate()
2825
1673
# Find out what port we got
2826
1674
service.port = tcp_server.socket.getsockname()[1]
2827
1675
if use_ipv6:
2828
logger.info("Now listening on address %r, port %d,"
2829
" flowinfo %d, scope_id %d",
2830
*tcp_server.socket.getsockname())
1676
logger.info(u"Now listening on address %r, port %d,"
1677
" flowinfo %d, scope_id %d"
1678
% tcp_server.socket.getsockname())
2831
1679
else: # IPv4
2832
logger.info("Now listening on address %r, port %d",
2833
*tcp_server.socket.getsockname())
1680
logger.info(u"Now listening on address %r, port %d"
1681
% tcp_server.socket.getsockname())
2834
1682
2835
1683
#service.interface = tcp_server.socket.getsockname()[3]
2836
1684
2838
1686
# From the Avahi example code
2839
1687
try:
2840
1688
service.activate()
2841
except dbus.exceptions.DBusException as error:
2842
logger.critical("D-Bus Exception", exc_info=error)
2843
cleanup()
1689
except dbus.exceptions.DBusException, error:
1690
logger.critical(u"DBusException: %s", error)
2844
1691
sys.exit(1)
2845
1692
# End of Avahi example code
2846
1693
2849
1696
(tcp_server.handle_request
2850
1697
(*args[2:], **kwargs) or True))
2851
1698
2852
logger.debug("Starting main loop")
1699
logger.debug(u"Starting main loop")
2853
1700
main_loop.run()
2854
except AvahiError as error:
2855
logger.critical("Avahi Error", exc_info=error)
2856
cleanup()
1701
except AvahiError, error:
1702
logger.critical(u"AvahiError: %s", error)
2857
1703
sys.exit(1)
2858
1704
except KeyboardInterrupt:
2859
1705
if debug:
2860
print("", file=sys.stderr)
2861
logger.debug("Server received KeyboardInterrupt")
2862
logger.debug("Server exiting")
2863
# Must run before the D-Bus bus name gets deregistered
2864
cleanup()
1706
print >> sys.stderr
1707
logger.debug(u"Server received KeyboardInterrupt")
1708
logger.debug(u"Server exiting")
2865
1709
2866
1710
if __name__ == '__main__':
2867
1711
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0