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- Committer: Teddy Hogeborn
- Date: 2014-02-16 02:42:42 UTC
- Revision ID: teddy@recompile.se-20140216024242-9wiw1nkxgt7ohovj
Fix running of self-tests.
* debian/control (Build-Depends): Add Python dependencies to
successfully run self-tests.
* debian/copyright: GPLv3 now has its own license file - use it.
* debian/watch: Set PGP signature URL.
* mandos (main): Bug fix: When running self-tests, set exit code.
* mandos-ctl (main): Cosmetic fix; use os.EX_OK instead of plain 0.
* debian/control (Build-Depends): Add Python dependencies to
successfully run self-tests.
* debian/copyright: GPLv3 now has its own license file - use it.
* debian/watch: Set PGP signature URL.
* mandos (main): Bug fix: When running self-tests, set exit code.
* mandos-ctl (main): Cosmetic fix; use os.EX_OK instead of plain 0.
- files added:
- debian/mandos-client.examples
- network-hooks.d
- files modified:
- .bzrignore
added
removed
mandos
11
11
# "AvahiService" class, and some lines in "main".
12
12
#
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# Everything else is
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# Copyright © 2008-2011 Teddy Hogeborn
15
# Copyright © 2008-2011 Björn Påhlsson
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# Copyright © 2008-2014 Teddy Hogeborn
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# Copyright © 2008-2014 Björn Påhlsson
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# along with this program. If not, see
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# <http://www.gnu.org/licenses/>.
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#
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# Contact the authors at <mandos@fukt.bsnet.se>.
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# Contact the authors at <mandos@recompile.se>.
32
32
#
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from __future__ import (division, absolute_import, print_function,
35
35
unicode_literals)
36
36
37
from future_builtins import *
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import SocketServer as socketserver
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import socket
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import argparse
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import functools
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import cPickle as pickle
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import multiprocessing
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import types
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import binascii
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import tempfile
70
import itertools
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import collections
65
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import dbus
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74
import dbus.service
81
88
except ImportError:
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89
SO_BINDTODEVICE = None
83
90
84
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version = "1.3.1"
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#logger = logging.getLogger('mandos')
88
logger = logging.Logger('mandos')
91
version = "1.6.3"
92
stored_state_file = "clients.pickle"
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logger = logging.getLogger()
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syslogger = (logging.handlers.SysLogHandler
90
96
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
91
97
address = str("/dev/log")))
92
syslogger.setFormatter(logging.Formatter
93
('Mandos [%(process)d]: %(levelname)s:'
94
' %(message)s'))
95
logger.addHandler(syslogger)
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console = logging.StreamHandler()
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console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'
99
' %(levelname)s:'
100
' %(message)s'))
101
logger.addHandler(console)
98
99
try:
100
if_nametoindex = (ctypes.cdll.LoadLibrary
101
(ctypes.util.find_library("c"))
102
.if_nametoindex)
103
except (OSError, AttributeError):
104
def if_nametoindex(interface):
105
"Get an interface index the hard way, i.e. using fcntl()"
106
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
107
with contextlib.closing(socket.socket()) as s:
108
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
109
struct.pack(str("16s16x"),
110
interface))
111
interface_index = struct.unpack(str("I"),
112
ifreq[16:20])[0]
113
return interface_index
114
115
116
def initlogger(debug, level=logging.WARNING):
117
"""init logger and add loglevel"""
118
119
syslogger.setFormatter(logging.Formatter
120
('Mandos [%(process)d]: %(levelname)s:'
121
' %(message)s'))
122
logger.addHandler(syslogger)
123
124
if debug:
125
console = logging.StreamHandler()
126
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
127
' [%(process)d]:'
128
' %(levelname)s:'
129
' %(message)s'))
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logger.addHandler(console)
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logger.setLevel(level)
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133
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class PGPError(Exception):
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"""Exception if encryption/decryption fails"""
136
pass
137
138
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class PGPEngine(object):
140
"""A simple class for OpenPGP symmetric encryption & decryption"""
141
def __init__(self):
142
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
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self.gnupgargs = ['--batch',
144
'--home', self.tempdir,
145
'--force-mdc',
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'--quiet',
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'--no-use-agent']
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def __enter__(self):
150
return self
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def __exit__(self, exc_type, exc_value, traceback):
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self._cleanup()
154
return False
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def __del__(self):
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self._cleanup()
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def _cleanup(self):
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if self.tempdir is not None:
161
# Delete contents of tempdir
162
for root, dirs, files in os.walk(self.tempdir,
163
topdown = False):
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for filename in files:
165
os.remove(os.path.join(root, filename))
166
for dirname in dirs:
167
os.rmdir(os.path.join(root, dirname))
168
# Remove tempdir
169
os.rmdir(self.tempdir)
170
self.tempdir = None
171
172
def password_encode(self, password):
173
# Passphrase can not be empty and can not contain newlines or
174
# NUL bytes. So we prefix it and hex encode it.
175
encoded = b"mandos" + binascii.hexlify(password)
176
if len(encoded) > 2048:
177
# GnuPG can't handle long passwords, so encode differently
178
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
179
.replace(b"\n", b"\\n")
180
.replace(b"\0", b"\\x00"))
181
return encoded
182
183
def encrypt(self, data, password):
184
passphrase = self.password_encode(password)
185
with tempfile.NamedTemporaryFile(dir=self.tempdir
186
) as passfile:
187
passfile.write(passphrase)
188
passfile.flush()
189
proc = subprocess.Popen(['gpg', '--symmetric',
190
'--passphrase-file',
191
passfile.name]
192
+ self.gnupgargs,
193
stdin = subprocess.PIPE,
194
stdout = subprocess.PIPE,
195
stderr = subprocess.PIPE)
196
ciphertext, err = proc.communicate(input = data)
197
if proc.returncode != 0:
198
raise PGPError(err)
199
return ciphertext
200
201
def decrypt(self, data, password):
202
passphrase = self.password_encode(password)
203
with tempfile.NamedTemporaryFile(dir = self.tempdir
204
) as passfile:
205
passfile.write(passphrase)
206
passfile.flush()
207
proc = subprocess.Popen(['gpg', '--decrypt',
208
'--passphrase-file',
209
passfile.name]
210
+ self.gnupgargs,
211
stdin = subprocess.PIPE,
212
stdout = subprocess.PIPE,
213
stderr = subprocess.PIPE)
214
decrypted_plaintext, err = proc.communicate(input
215
= data)
216
if proc.returncode != 0:
217
raise PGPError(err)
218
return decrypted_plaintext
219
102
220
103
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class AvahiError(Exception):
104
222
def __init__(self, value, *args, **kwargs):
122
240
Used to optionally bind to the specified interface.
123
241
name: string; Example: 'Mandos'
124
242
type: string; Example: '_mandos._tcp'.
125
See <http://www.dns-sd.org/ServiceTypes.html>
243
See <https://www.iana.org/assignments/service-names-port-numbers>
126
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port: integer; what port to announce
127
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TXT: list of strings; TXT record for the service
128
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domain: string; Domain to publish on, default to .local if empty.
134
252
server: D-Bus Server
135
253
bus: dbus.SystemBus()
136
254
"""
255
137
256
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
138
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servicetype = None, port = None, TXT = None,
139
258
domain = "", host = "", max_renames = 32768,
152
271
self.server = None
153
272
self.bus = bus
154
273
self.entry_group_state_changed_match = None
274
155
275
def rename(self):
156
276
"""Derived from the Avahi example code"""
157
277
if self.rename_count >= self.max_renames:
159
279
" after %i retries, exiting.",
160
280
self.rename_count)
161
281
raise AvahiServiceError("Too many renames")
162
self.name = unicode(self.server.GetAlternativeServiceName(self.name))
282
self.name = unicode(self.server
283
.GetAlternativeServiceName(self.name))
163
284
logger.info("Changing Zeroconf service name to %r ...",
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285
self.name)
165
syslogger.setFormatter(logging.Formatter
166
('Mandos (%s) [%%(process)d]:'
167
' %%(levelname)s: %%(message)s'
168
% self.name))
169
286
self.remove()
170
287
try:
171
288
self.add()
172
289
except dbus.exceptions.DBusException as error:
173
logger.critical("DBusException: %s", error)
290
logger.critical("D-Bus Exception", exc_info=error)
174
291
self.cleanup()
175
292
os._exit(1)
176
293
self.rename_count += 1
294
177
295
def remove(self):
178
296
"""Derived from the Avahi example code"""
179
297
if self.entry_group_state_changed_match is not None:
181
299
self.entry_group_state_changed_match = None
182
300
if self.group is not None:
183
301
self.group.Reset()
302
184
303
def add(self):
185
304
"""Derived from the Avahi example code"""
186
305
self.remove()
191
310
avahi.DBUS_INTERFACE_ENTRY_GROUP)
192
311
self.entry_group_state_changed_match = (
193
312
self.group.connect_to_signal(
194
'StateChanged', self .entry_group_state_changed))
313
'StateChanged', self.entry_group_state_changed))
195
314
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
196
315
self.name, self.type)
197
316
self.group.AddService(
203
322
dbus.UInt16(self.port),
204
323
avahi.string_array_to_txt_array(self.TXT))
205
324
self.group.Commit()
325
206
326
def entry_group_state_changed(self, state, error):
207
327
"""Derived from the Avahi example code"""
208
328
logger.debug("Avahi entry group state change: %i", state)
215
335
elif state == avahi.ENTRY_GROUP_FAILURE:
216
336
logger.critical("Avahi: Error in group state changed %s",
217
337
unicode(error))
218
raise AvahiGroupError("State changed: %s"
219
% unicode(error))
338
raise AvahiGroupError("State changed: {0!s}"
339
.format(error))
340
220
341
def cleanup(self):
221
342
"""Derived from the Avahi example code"""
222
343
if self.group is not None:
223
344
try:
224
345
self.group.Free()
225
346
except (dbus.exceptions.UnknownMethodException,
226
dbus.exceptions.DBusException) as e:
347
dbus.exceptions.DBusException):
227
348
pass
228
349
self.group = None
229
350
self.remove()
351
230
352
def server_state_changed(self, state, error=None):
231
353
"""Derived from the Avahi example code"""
232
354
logger.debug("Avahi server state change: %i", state)
251
373
logger.debug("Unknown state: %r", state)
252
374
else:
253
375
logger.debug("Unknown state: %r: %r", state, error)
376
254
377
def activate(self):
255
378
"""Derived from the Avahi example code"""
256
379
if self.server is None:
264
387
self.server_state_changed(self.server.GetState())
265
388
266
389
390
class AvahiServiceToSyslog(AvahiService):
391
def rename(self):
392
"""Add the new name to the syslog messages"""
393
ret = AvahiService.rename(self)
394
syslogger.setFormatter(logging.Formatter
395
('Mandos ({0}) [%(process)d]:'
396
' %(levelname)s: %(message)s'
397
.format(self.name)))
398
return ret
399
400
401
def timedelta_to_milliseconds(td):
402
"Convert a datetime.timedelta() to milliseconds"
403
return ((td.days * 24 * 60 * 60 * 1000)
404
+ (td.seconds * 1000)
405
+ (td.microseconds // 1000))
406
407
267
408
class Client(object):
268
409
"""A representation of a client host served by this server.
269
410
270
411
Attributes:
271
_approved: bool(); 'None' if not yet approved/disapproved
412
approved: bool(); 'None' if not yet approved/disapproved
272
413
approval_delay: datetime.timedelta(); Time to wait for approval
273
414
approval_duration: datetime.timedelta(); Duration of one approval
274
415
checker: subprocess.Popen(); a running checker process used
281
422
instance %(name)s can be used in the command.
282
423
checker_initiator_tag: a gobject event source tag, or None
283
424
created: datetime.datetime(); (UTC) object creation
425
client_structure: Object describing what attributes a client has
426
and is used for storing the client at exit
284
427
current_checker_command: string; current running checker_command
285
disable_hook: If set, called by disable() as disable_hook(self)
286
428
disable_initiator_tag: a gobject event source tag, or None
287
429
enabled: bool()
288
430
fingerprint: string (40 or 32 hexadecimal digits); used to
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433
interval: datetime.timedelta(); How often to start a new checker
292
434
last_approval_request: datetime.datetime(); (UTC) or None
293
435
last_checked_ok: datetime.datetime(); (UTC) or None
294
last_enabled: datetime.datetime(); (UTC)
436
last_checker_status: integer between 0 and 255 reflecting exit
437
status of last checker. -1 reflects crashed
438
checker, -2 means no checker completed yet.
439
last_enabled: datetime.datetime(); (UTC) or None
295
440
name: string; from the config file, used in log messages and
296
441
D-Bus identifiers
297
442
secret: bytestring; sent verbatim (over TLS) to client
298
443
timeout: datetime.timedelta(); How long from last_checked_ok
299
444
until this client is disabled
445
extended_timeout: extra long timeout when secret has been sent
300
446
runtime_expansions: Allowed attributes for runtime expansion.
447
expires: datetime.datetime(); time (UTC) when a client will be
448
disabled, or None
449
server_settings: The server_settings dict from main()
301
450
"""
302
451
303
452
runtime_expansions = ("approval_delay", "approval_duration",
304
"created", "enabled", "fingerprint",
305
"host", "interval", "last_checked_ok",
453
"created", "enabled", "expires",
454
"fingerprint", "host", "interval",
455
"last_approval_request", "last_checked_ok",
306
456
"last_enabled", "name", "timeout")
307
308
@staticmethod
309
def _timedelta_to_milliseconds(td):
310
"Convert a datetime.timedelta() to milliseconds"
311
return ((td.days * 24 * 60 * 60 * 1000)
312
+ (td.seconds * 1000)
313
+ (td.microseconds // 1000))
457
client_defaults = { "timeout": "PT5M",
458
"extended_timeout": "PT15M",
459
"interval": "PT2M",
460
"checker": "fping -q -- %%(host)s",
461
"host": "",
462
"approval_delay": "PT0S",
463
"approval_duration": "PT1S",
464
"approved_by_default": "True",
465
"enabled": "True",
466
}
314
467
315
468
def timeout_milliseconds(self):
316
469
"Return the 'timeout' attribute in milliseconds"
317
return self._timedelta_to_milliseconds(self.timeout)
470
return timedelta_to_milliseconds(self.timeout)
471
472
def extended_timeout_milliseconds(self):
473
"Return the 'extended_timeout' attribute in milliseconds"
474
return timedelta_to_milliseconds(self.extended_timeout)
318
475
319
476
def interval_milliseconds(self):
320
477
"Return the 'interval' attribute in milliseconds"
321
return self._timedelta_to_milliseconds(self.interval)
322
478
return timedelta_to_milliseconds(self.interval)
479
323
480
def approval_delay_milliseconds(self):
324
return self._timedelta_to_milliseconds(self.approval_delay)
325
326
def __init__(self, name = None, disable_hook=None, config=None):
327
"""Note: the 'checker' key in 'config' sets the
328
'checker_command' attribute and *not* the 'checker'
329
attribute."""
481
return timedelta_to_milliseconds(self.approval_delay)
482
483
@staticmethod
484
def config_parser(config):
485
"""Construct a new dict of client settings of this form:
486
{ client_name: {setting_name: value, ...}, ...}
487
with exceptions for any special settings as defined above.
488
NOTE: Must be a pure function. Must return the same result
489
value given the same arguments.
490
"""
491
settings = {}
492
for client_name in config.sections():
493
section = dict(config.items(client_name))
494
client = settings[client_name] = {}
495
496
client["host"] = section["host"]
497
# Reformat values from string types to Python types
498
client["approved_by_default"] = config.getboolean(
499
client_name, "approved_by_default")
500
client["enabled"] = config.getboolean(client_name,
501
"enabled")
502
503
client["fingerprint"] = (section["fingerprint"].upper()
504
.replace(" ", ""))
505
if "secret" in section:
506
client["secret"] = section["secret"].decode("base64")
507
elif "secfile" in section:
508
with open(os.path.expanduser(os.path.expandvars
509
(section["secfile"])),
510
"rb") as secfile:
511
client["secret"] = secfile.read()
512
else:
513
raise TypeError("No secret or secfile for section {0}"
514
.format(section))
515
client["timeout"] = string_to_delta(section["timeout"])
516
client["extended_timeout"] = string_to_delta(
517
section["extended_timeout"])
518
client["interval"] = string_to_delta(section["interval"])
519
client["approval_delay"] = string_to_delta(
520
section["approval_delay"])
521
client["approval_duration"] = string_to_delta(
522
section["approval_duration"])
523
client["checker_command"] = section["checker"]
524
client["last_approval_request"] = None
525
client["last_checked_ok"] = None
526
client["last_checker_status"] = -2
527
528
return settings
529
530
def __init__(self, settings, name = None, server_settings=None):
330
531
self.name = name
331
if config is None:
332
config = {}
532
if server_settings is None:
533
server_settings = {}
534
self.server_settings = server_settings
535
# adding all client settings
536
for setting, value in settings.iteritems():
537
setattr(self, setting, value)
538
539
if self.enabled:
540
if not hasattr(self, "last_enabled"):
541
self.last_enabled = datetime.datetime.utcnow()
542
if not hasattr(self, "expires"):
543
self.expires = (datetime.datetime.utcnow()
544
+ self.timeout)
545
else:
546
self.last_enabled = None
547
self.expires = None
548
333
549
logger.debug("Creating client %r", self.name)
334
550
# Uppercase and remove spaces from fingerprint for later
335
551
# comparison purposes with return value from the fingerprint()
336
552
# function
337
self.fingerprint = (config["fingerprint"].upper()
338
.replace(" ", ""))
339
553
logger.debug(" Fingerprint: %s", self.fingerprint)
340
if "secret" in config:
341
self.secret = config["secret"].decode("base64")
342
elif "secfile" in config:
343
with open(os.path.expanduser(os.path.expandvars
344
(config["secfile"])),
345
"rb") as secfile:
346
self.secret = secfile.read()
347
else:
348
raise TypeError("No secret or secfile for client %s"
349
% self.name)
350
self.host = config.get("host", "")
351
self.created = datetime.datetime.utcnow()
352
self.enabled = False
353
self.last_approval_request = None
354
self.last_enabled = None
355
self.last_checked_ok = None
356
self.timeout = string_to_delta(config["timeout"])
357
self.interval = string_to_delta(config["interval"])
358
self.disable_hook = disable_hook
554
self.created = settings.get("created",
555
datetime.datetime.utcnow())
556
557
# attributes specific for this server instance
359
558
self.checker = None
360
559
self.checker_initiator_tag = None
361
560
self.disable_initiator_tag = None
362
561
self.checker_callback_tag = None
363
self.checker_command = config["checker"]
364
562
self.current_checker_command = None
365
self.last_connect = None
366
self._approved = None
367
self.approved_by_default = config.get("approved_by_default",
368
True)
563
self.approved = None
369
564
self.approvals_pending = 0
370
self.approval_delay = string_to_delta(
371
config["approval_delay"])
372
self.approval_duration = string_to_delta(
373
config["approval_duration"])
374
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
565
self.changedstate = (multiprocessing_manager
566
.Condition(multiprocessing_manager
567
.Lock()))
568
self.client_structure = [attr for attr in
569
self.__dict__.iterkeys()
570
if not attr.startswith("_")]
571
self.client_structure.append("client_structure")
572
573
for name, t in inspect.getmembers(type(self),
574
lambda obj:
575
isinstance(obj,
576
property)):
577
if not name.startswith("_"):
578
self.client_structure.append(name)
375
579
580
# Send notice to process children that client state has changed
376
581
def send_changedstate(self):
377
self.changedstate.acquire()
378
self.changedstate.notify_all()
379
self.changedstate.release()
380
582
with self.changedstate:
583
self.changedstate.notify_all()
584
381
585
def enable(self):
382
586
"""Start this client's checker and timeout hooks"""
383
587
if getattr(self, "enabled", False):
384
588
# Already enabled
385
589
return
386
self.send_changedstate()
590
self.expires = datetime.datetime.utcnow() + self.timeout
591
self.enabled = True
387
592
self.last_enabled = datetime.datetime.utcnow()
593
self.init_checker()
594
self.send_changedstate()
595
596
def disable(self, quiet=True):
597
"""Disable this client."""
598
if not getattr(self, "enabled", False):
599
return False
600
if not quiet:
601
logger.info("Disabling client %s", self.name)
602
if getattr(self, "disable_initiator_tag", None) is not None:
603
gobject.source_remove(self.disable_initiator_tag)
604
self.disable_initiator_tag = None
605
self.expires = None
606
if getattr(self, "checker_initiator_tag", None) is not None:
607
gobject.source_remove(self.checker_initiator_tag)
608
self.checker_initiator_tag = None
609
self.stop_checker()
610
self.enabled = False
611
if not quiet:
612
self.send_changedstate()
613
# Do not run this again if called by a gobject.timeout_add
614
return False
615
616
def __del__(self):
617
self.disable()
618
619
def init_checker(self):
388
620
# Schedule a new checker to be started an 'interval' from now,
389
621
# and every interval from then on.
622
if self.checker_initiator_tag is not None:
623
gobject.source_remove(self.checker_initiator_tag)
390
624
self.checker_initiator_tag = (gobject.timeout_add
391
625
(self.interval_milliseconds(),
392
626
self.start_checker))
393
627
# Schedule a disable() when 'timeout' has passed
628
if self.disable_initiator_tag is not None:
629
gobject.source_remove(self.disable_initiator_tag)
394
630
self.disable_initiator_tag = (gobject.timeout_add
395
631
(self.timeout_milliseconds(),
396
632
self.disable))
397
self.enabled = True
398
633
# Also start a new checker *right now*.
399
634
self.start_checker()
400
635
401
def disable(self, quiet=True):
402
"""Disable this client."""
403
if not getattr(self, "enabled", False):
404
return False
405
if not quiet:
406
self.send_changedstate()
407
if not quiet:
408
logger.info("Disabling client %s", self.name)
409
if getattr(self, "disable_initiator_tag", False):
410
gobject.source_remove(self.disable_initiator_tag)
411
self.disable_initiator_tag = None
412
if getattr(self, "checker_initiator_tag", False):
413
gobject.source_remove(self.checker_initiator_tag)
414
self.checker_initiator_tag = None
415
self.stop_checker()
416
if self.disable_hook:
417
self.disable_hook(self)
418
self.enabled = False
419
# Do not run this again if called by a gobject.timeout_add
420
return False
421
422
def __del__(self):
423
self.disable_hook = None
424
self.disable()
425
426
636
def checker_callback(self, pid, condition, command):
427
637
"""The checker has completed, so take appropriate actions."""
428
638
self.checker_callback_tag = None
429
639
self.checker = None
430
640
if os.WIFEXITED(condition):
431
exitstatus = os.WEXITSTATUS(condition)
432
if exitstatus == 0:
641
self.last_checker_status = os.WEXITSTATUS(condition)
642
if self.last_checker_status == 0:
433
643
logger.info("Checker for %(name)s succeeded",
434
644
vars(self))
435
645
self.checked_ok()
437
647
logger.info("Checker for %(name)s failed",
438
648
vars(self))
439
649
else:
650
self.last_checker_status = -1
440
651
logger.warning("Checker for %(name)s crashed?",
441
652
vars(self))
442
653
443
654
def checked_ok(self):
444
"""Bump up the timeout for this client.
445
446
This should only be called when the client has been seen,
447
alive and well.
448
"""
655
"""Assert that the client has been seen, alive and well."""
449
656
self.last_checked_ok = datetime.datetime.utcnow()
450
gobject.source_remove(self.disable_initiator_tag)
451
self.disable_initiator_tag = (gobject.timeout_add
452
(self.timeout_milliseconds(),
453
self.disable))
657
self.last_checker_status = 0
658
self.bump_timeout()
659
660
def bump_timeout(self, timeout=None):
661
"""Bump up the timeout for this client."""
662
if timeout is None:
663
timeout = self.timeout
664
if self.disable_initiator_tag is not None:
665
gobject.source_remove(self.disable_initiator_tag)
666
self.disable_initiator_tag = None
667
if getattr(self, "enabled", False):
668
self.disable_initiator_tag = (gobject.timeout_add
669
(timedelta_to_milliseconds
670
(timeout), self.disable))
671
self.expires = datetime.datetime.utcnow() + timeout
454
672
455
673
def need_approval(self):
456
674
self.last_approval_request = datetime.datetime.utcnow()
461
679
If a checker already exists, leave it running and do
462
680
nothing."""
463
681
# The reason for not killing a running checker is that if we
464
# did that, then if a checker (for some reason) started
465
# running slowly and taking more than 'interval' time, the
466
# client would inevitably timeout, since no checker would get
467
# a chance to run to completion. If we instead leave running
682
# did that, and if a checker (for some reason) started running
683
# slowly and taking more than 'interval' time, then the client
684
# would inevitably timeout, since no checker would get a
685
# chance to run to completion. If we instead leave running
468
686
# checkers alone, the checker would have to take more time
469
687
# than 'timeout' for the client to be disabled, which is as it
470
688
# should be.
472
690
# If a checker exists, make sure it is not a zombie
473
691
try:
474
692
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
475
except (AttributeError, OSError) as error:
476
if (isinstance(error, OSError)
477
and error.errno != errno.ECHILD):
478
raise error
693
except AttributeError:
694
pass
695
except OSError as error:
696
if error.errno != errno.ECHILD:
697
raise
479
698
else:
480
699
if pid:
481
700
logger.warning("Checker was a zombie")
484
703
self.current_checker_command)
485
704
# Start a new checker if needed
486
705
if self.checker is None:
706
# Escape attributes for the shell
707
escaped_attrs = dict(
708
(attr, re.escape(unicode(getattr(self, attr))))
709
for attr in
710
self.runtime_expansions)
487
711
try:
488
# In case checker_command has exactly one % operator
489
command = self.checker_command % self.host
490
except TypeError:
491
# Escape attributes for the shell
492
escaped_attrs = dict(
493
(attr,
494
re.escape(unicode(str(getattr(self, attr, "")),
495
errors=
496
'replace')))
497
for attr in
498
self.runtime_expansions)
499
500
try:
501
command = self.checker_command % escaped_attrs
502
except TypeError as error:
503
logger.error('Could not format string "%s":'
504
' %s', self.checker_command, error)
505
return True # Try again later
712
command = self.checker_command % escaped_attrs
713
except TypeError as error:
714
logger.error('Could not format string "%s"',
715
self.checker_command, exc_info=error)
716
return True # Try again later
506
717
self.current_checker_command = command
507
718
try:
508
719
logger.info("Starting checker %r for %s",
511
722
# in normal mode, that is already done by daemon(),
512
723
# and in debug mode we don't want to. (Stdin is
513
724
# always replaced by /dev/null.)
725
# The exception is when not debugging but nevertheless
726
# running in the foreground; use the previously
727
# created wnull.
728
popen_args = {}
729
if (not self.server_settings["debug"]
730
and self.server_settings["foreground"]):
731
popen_args.update({"stdout": wnull,
732
"stderr": wnull })
514
733
self.checker = subprocess.Popen(command,
515
734
close_fds=True,
516
shell=True, cwd="/")
517
self.checker_callback_tag = (gobject.child_watch_add
518
(self.checker.pid,
519
self.checker_callback,
520
data=command))
521
# The checker may have completed before the gobject
522
# watch was added. Check for this.
735
shell=True, cwd="/",
736
**popen_args)
737
except OSError as error:
738
logger.error("Failed to start subprocess",
739
exc_info=error)
740
return True
741
self.checker_callback_tag = (gobject.child_watch_add
742
(self.checker.pid,
743
self.checker_callback,
744
data=command))
745
# The checker may have completed before the gobject
746
# watch was added. Check for this.
747
try:
523
748
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
524
if pid:
525
gobject.source_remove(self.checker_callback_tag)
526
self.checker_callback(pid, status, command)
527
749
except OSError as error:
528
logger.error("Failed to start subprocess: %s",
529
error)
750
if error.errno == errno.ECHILD:
751
# This should never happen
752
logger.error("Child process vanished",
753
exc_info=error)
754
return True
755
raise
756
if pid:
757
gobject.source_remove(self.checker_callback_tag)
758
self.checker_callback(pid, status, command)
530
759
# Re-run this periodically if run by gobject.timeout_add
531
760
return True
532
761
539
768
return
540
769
logger.debug("Stopping checker for %(name)s", vars(self))
541
770
try:
542
os.kill(self.checker.pid, signal.SIGTERM)
771
self.checker.terminate()
543
772
#time.sleep(0.5)
544
773
#if self.checker.poll() is None:
545
# os.kill(self.checker.pid, signal.SIGKILL)
774
# self.checker.kill()
546
775
except OSError as error:
547
776
if error.errno != errno.ESRCH: # No such process
548
777
raise
549
778
self.checker = None
550
779
780
551
781
def dbus_service_property(dbus_interface, signature="v",
552
782
access="readwrite", byte_arrays=False):
553
783
"""Decorators for marking methods of a DBusObjectWithProperties to
564
794
# "Set" method, so we fail early here:
565
795
if byte_arrays and signature != "ay":
566
796
raise ValueError("Byte arrays not supported for non-'ay'"
567
" signature %r" % signature)
797
" signature {0!r}".format(signature))
568
798
def decorator(func):
569
799
func._dbus_is_property = True
570
800
func._dbus_interface = dbus_interface
578
808
return decorator
579
809
580
810
811
def dbus_interface_annotations(dbus_interface):
812
"""Decorator for marking functions returning interface annotations
813
814
Usage:
815
816
@dbus_interface_annotations("org.example.Interface")
817
def _foo(self): # Function name does not matter
818
return {"org.freedesktop.DBus.Deprecated": "true",
819
"org.freedesktop.DBus.Property.EmitsChangedSignal":
820
"false"}
821
"""
822
def decorator(func):
823
func._dbus_is_interface = True
824
func._dbus_interface = dbus_interface
825
func._dbus_name = dbus_interface
826
return func
827
return decorator
828
829
830
def dbus_annotations(annotations):
831
"""Decorator to annotate D-Bus methods, signals or properties
832
Usage:
833
834
@dbus_service_property("org.example.Interface", signature="b",
835
access="r")
836
@dbus_annotations({{"org.freedesktop.DBus.Deprecated": "true",
837
"org.freedesktop.DBus.Property."
838
"EmitsChangedSignal": "false"})
839
def Property_dbus_property(self):
840
return dbus.Boolean(False)
841
"""
842
def decorator(func):
843
func._dbus_annotations = annotations
844
return func
845
return decorator
846
847
581
848
class DBusPropertyException(dbus.exceptions.DBusException):
582
849
"""A base class for D-Bus property-related exceptions
583
850
"""
599
866
600
867
class DBusObjectWithProperties(dbus.service.Object):
601
868
"""A D-Bus object with properties.
602
869
603
870
Classes inheriting from this can use the dbus_service_property
604
871
decorator to expose methods as D-Bus properties. It exposes the
605
872
standard Get(), Set(), and GetAll() methods on the D-Bus.
606
873
"""
607
874
608
875
@staticmethod
609
def _is_dbus_property(obj):
610
return getattr(obj, "_dbus_is_property", False)
876
def _is_dbus_thing(thing):
877
"""Returns a function testing if an attribute is a D-Bus thing
878
879
If called like _is_dbus_thing("method") it returns a function
880
suitable for use as predicate to inspect.getmembers().
881
"""
882
return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),
883
False)
611
884
612
def _get_all_dbus_properties(self):
885
def _get_all_dbus_things(self, thing):
613
886
"""Returns a generator of (name, attribute) pairs
614
887
"""
615
return ((prop._dbus_name, prop)
616
for name, prop in
617
inspect.getmembers(self, self._is_dbus_property))
888
return ((getattr(athing.__get__(self), "_dbus_name",
889
name),
890
athing.__get__(self))
891
for cls in self.__class__.__mro__
892
for name, athing in
893
inspect.getmembers(cls,
894
self._is_dbus_thing(thing)))
618
895
619
896
def _get_dbus_property(self, interface_name, property_name):
620
897
"""Returns a bound method if one exists which is a D-Bus
621
898
property with the specified name and interface.
622
899
"""
623
for name in (property_name,
624
property_name + "_dbus_property"):
625
prop = getattr(self, name, None)
626
if (prop is None
627
or not self._is_dbus_property(prop)
628
or prop._dbus_name != property_name
629
or (interface_name and prop._dbus_interface
630
and interface_name != prop._dbus_interface)):
631
continue
632
return prop
900
for cls in self.__class__.__mro__:
901
for name, value in (inspect.getmembers
902
(cls,
903
self._is_dbus_thing("property"))):
904
if (value._dbus_name == property_name
905
and value._dbus_interface == interface_name):
906
return value.__get__(self)
907
633
908
# No such property
634
909
raise DBusPropertyNotFound(self.dbus_object_path + ":"
635
910
+ interface_name + "."
659
934
# The byte_arrays option is not supported yet on
660
935
# signatures other than "ay".
661
936
if prop._dbus_signature != "ay":
662
raise ValueError
663
value = dbus.ByteArray(''.join(unichr(byte)
664
for byte in value))
937
raise ValueError("Byte arrays not supported for non-"
938
"'ay' signature {0!r}"
939
.format(prop._dbus_signature))
940
value = dbus.ByteArray(b''.join(chr(byte)
941
for byte in value))
665
942
prop(value)
666
943
667
944
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
669
946
def GetAll(self, interface_name):
670
947
"""Standard D-Bus property GetAll() method, see D-Bus
671
948
standard.
672
949
673
950
Note: Will not include properties with access="write".
674
951
"""
675
all = {}
676
for name, prop in self._get_all_dbus_properties():
952
properties = {}
953
for name, prop in self._get_all_dbus_things("property"):
677
954
if (interface_name
678
955
and interface_name != prop._dbus_interface):
679
956
# Interface non-empty but did not match
683
960
continue
684
961
value = prop()
685
962
if not hasattr(value, "variant_level"):
686
all[name] = value
963
properties[name] = value
687
964
continue
688
all[name] = type(value)(value, variant_level=
689
value.variant_level+1)
690
return dbus.Dictionary(all, signature="sv")
965
properties[name] = type(value)(value, variant_level=
966
value.variant_level+1)
967
return dbus.Dictionary(properties, signature="sv")
691
968
692
969
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
693
970
out_signature="s",
694
971
path_keyword='object_path',
695
972
connection_keyword='connection')
696
973
def Introspect(self, object_path, connection):
697
"""Standard D-Bus method, overloaded to insert property tags.
974
"""Overloading of standard D-Bus method.
975
976
Inserts property tags and interface annotation tags.
698
977
"""
699
978
xmlstring = dbus.service.Object.Introspect(self, object_path,
700
979
connection)
707
986
e.setAttribute("access", prop._dbus_access)
708
987
return e
709
988
for if_tag in document.getElementsByTagName("interface"):
989
# Add property tags
710
990
for tag in (make_tag(document, name, prop)
711
991
for name, prop
712
in self._get_all_dbus_properties()
992
in self._get_all_dbus_things("property")
713
993
if prop._dbus_interface
714
994
== if_tag.getAttribute("name")):
715
995
if_tag.appendChild(tag)
996
# Add annotation tags
997
for typ in ("method", "signal", "property"):
998
for tag in if_tag.getElementsByTagName(typ):
999
annots = dict()
1000
for name, prop in (self.
1001
_get_all_dbus_things(typ)):
1002
if (name == tag.getAttribute("name")
1003
and prop._dbus_interface
1004
== if_tag.getAttribute("name")):
1005
annots.update(getattr
1006
(prop,
1007
"_dbus_annotations",
1008
{}))
1009
for name, value in annots.iteritems():
1010
ann_tag = document.createElement(
1011
"annotation")
1012
ann_tag.setAttribute("name", name)
1013
ann_tag.setAttribute("value", value)
1014
tag.appendChild(ann_tag)
1015
# Add interface annotation tags
1016
for annotation, value in dict(
1017
itertools.chain.from_iterable(
1018
annotations().iteritems()
1019
for name, annotations in
1020
self._get_all_dbus_things("interface")
1021
if name == if_tag.getAttribute("name")
1022
)).iteritems():
1023
ann_tag = document.createElement("annotation")
1024
ann_tag.setAttribute("name", annotation)
1025
ann_tag.setAttribute("value", value)
1026
if_tag.appendChild(ann_tag)
716
1027
# Add the names to the return values for the
717
1028
# "org.freedesktop.DBus.Properties" methods
718
1029
if (if_tag.getAttribute("name")
733
1044
except (AttributeError, xml.dom.DOMException,
734
1045
xml.parsers.expat.ExpatError) as error:
735
1046
logger.error("Failed to override Introspection method",
736
error)
1047
exc_info=error)
737
1048
return xmlstring
738
1049
739
1050
1051
def datetime_to_dbus(dt, variant_level=0):
1052
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1053
if dt is None:
1054
return dbus.String("", variant_level = variant_level)
1055
return dbus.String(dt.isoformat(),
1056
variant_level=variant_level)
1057
1058
1059
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1060
"""A class decorator; applied to a subclass of
1061
dbus.service.Object, it will add alternate D-Bus attributes with
1062
interface names according to the "alt_interface_names" mapping.
1063
Usage:
1064
1065
@alternate_dbus_interfaces({"org.example.Interface":
1066
"net.example.AlternateInterface"})
1067
class SampleDBusObject(dbus.service.Object):
1068
@dbus.service.method("org.example.Interface")
1069
def SampleDBusMethod():
1070
pass
1071
1072
The above "SampleDBusMethod" on "SampleDBusObject" will be
1073
reachable via two interfaces: "org.example.Interface" and
1074
"net.example.AlternateInterface", the latter of which will have
1075
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1076
"true", unless "deprecate" is passed with a False value.
1077
1078
This works for methods and signals, and also for D-Bus properties
1079
(from DBusObjectWithProperties) and interfaces (from the
1080
dbus_interface_annotations decorator).
1081
"""
1082
def wrapper(cls):
1083
for orig_interface_name, alt_interface_name in (
1084
alt_interface_names.iteritems()):
1085
attr = {}
1086
interface_names = set()
1087
# Go though all attributes of the class
1088
for attrname, attribute in inspect.getmembers(cls):
1089
# Ignore non-D-Bus attributes, and D-Bus attributes
1090
# with the wrong interface name
1091
if (not hasattr(attribute, "_dbus_interface")
1092
or not attribute._dbus_interface
1093
.startswith(orig_interface_name)):
1094
continue
1095
# Create an alternate D-Bus interface name based on
1096
# the current name
1097
alt_interface = (attribute._dbus_interface
1098
.replace(orig_interface_name,
1099
alt_interface_name))
1100
interface_names.add(alt_interface)
1101
# Is this a D-Bus signal?
1102
if getattr(attribute, "_dbus_is_signal", False):
1103
# Extract the original non-method undecorated
1104
# function by black magic
1105
nonmethod_func = (dict(
1106
zip(attribute.func_code.co_freevars,
1107
attribute.__closure__))["func"]
1108
.cell_contents)
1109
# Create a new, but exactly alike, function
1110
# object, and decorate it to be a new D-Bus signal
1111
# with the alternate D-Bus interface name
1112
new_function = (dbus.service.signal
1113
(alt_interface,
1114
attribute._dbus_signature)
1115
(types.FunctionType(
1116
nonmethod_func.func_code,
1117
nonmethod_func.func_globals,
1118
nonmethod_func.func_name,
1119
nonmethod_func.func_defaults,
1120
nonmethod_func.func_closure)))
1121
# Copy annotations, if any
1122
try:
1123
new_function._dbus_annotations = (
1124
dict(attribute._dbus_annotations))
1125
except AttributeError:
1126
pass
1127
# Define a creator of a function to call both the
1128
# original and alternate functions, so both the
1129
# original and alternate signals gets sent when
1130
# the function is called
1131
def fixscope(func1, func2):
1132
"""This function is a scope container to pass
1133
func1 and func2 to the "call_both" function
1134
outside of its arguments"""
1135
def call_both(*args, **kwargs):
1136
"""This function will emit two D-Bus
1137
signals by calling func1 and func2"""
1138
func1(*args, **kwargs)
1139
func2(*args, **kwargs)
1140
return call_both
1141
# Create the "call_both" function and add it to
1142
# the class
1143
attr[attrname] = fixscope(attribute, new_function)
1144
# Is this a D-Bus method?
1145
elif getattr(attribute, "_dbus_is_method", False):
1146
# Create a new, but exactly alike, function
1147
# object. Decorate it to be a new D-Bus method
1148
# with the alternate D-Bus interface name. Add it
1149
# to the class.
1150
attr[attrname] = (dbus.service.method
1151
(alt_interface,
1152
attribute._dbus_in_signature,
1153
attribute._dbus_out_signature)
1154
(types.FunctionType
1155
(attribute.func_code,
1156
attribute.func_globals,
1157
attribute.func_name,
1158
attribute.func_defaults,
1159
attribute.func_closure)))
1160
# Copy annotations, if any
1161
try:
1162
attr[attrname]._dbus_annotations = (
1163
dict(attribute._dbus_annotations))
1164
except AttributeError:
1165
pass
1166
# Is this a D-Bus property?
1167
elif getattr(attribute, "_dbus_is_property", False):
1168
# Create a new, but exactly alike, function
1169
# object, and decorate it to be a new D-Bus
1170
# property with the alternate D-Bus interface
1171
# name. Add it to the class.
1172
attr[attrname] = (dbus_service_property
1173
(alt_interface,
1174
attribute._dbus_signature,
1175
attribute._dbus_access,
1176
attribute
1177
._dbus_get_args_options
1178
["byte_arrays"])
1179
(types.FunctionType
1180
(attribute.func_code,
1181
attribute.func_globals,
1182
attribute.func_name,
1183
attribute.func_defaults,
1184
attribute.func_closure)))
1185
# Copy annotations, if any
1186
try:
1187
attr[attrname]._dbus_annotations = (
1188
dict(attribute._dbus_annotations))
1189
except AttributeError:
1190
pass
1191
# Is this a D-Bus interface?
1192
elif getattr(attribute, "_dbus_is_interface", False):
1193
# Create a new, but exactly alike, function
1194
# object. Decorate it to be a new D-Bus interface
1195
# with the alternate D-Bus interface name. Add it
1196
# to the class.
1197
attr[attrname] = (dbus_interface_annotations
1198
(alt_interface)
1199
(types.FunctionType
1200
(attribute.func_code,
1201
attribute.func_globals,
1202
attribute.func_name,
1203
attribute.func_defaults,
1204
attribute.func_closure)))
1205
if deprecate:
1206
# Deprecate all alternate interfaces
1207
iname="_AlternateDBusNames_interface_annotation{0}"
1208
for interface_name in interface_names:
1209
@dbus_interface_annotations(interface_name)
1210
def func(self):
1211
return { "org.freedesktop.DBus.Deprecated":
1212
"true" }
1213
# Find an unused name
1214
for aname in (iname.format(i)
1215
for i in itertools.count()):
1216
if aname not in attr:
1217
attr[aname] = func
1218
break
1219
if interface_names:
1220
# Replace the class with a new subclass of it with
1221
# methods, signals, etc. as created above.
1222
cls = type(b"{0}Alternate".format(cls.__name__),
1223
(cls,), attr)
1224
return cls
1225
return wrapper
1226
1227
1228
@alternate_dbus_interfaces({"se.recompile.Mandos":
1229
"se.bsnet.fukt.Mandos"})
740
1230
class ClientDBus(Client, DBusObjectWithProperties):
741
1231
"""A Client class using D-Bus
742
1232
751
1241
# dbus.service.Object doesn't use super(), so we can't either.
752
1242
753
1243
def __init__(self, bus = None, *args, **kwargs):
754
self._approvals_pending = 0
755
1244
self.bus = bus
756
1245
Client.__init__(self, *args, **kwargs)
757
1246
# Only now, when this client is initialized, can it show up on
763
1252
("/clients/" + client_object_name))
764
1253
DBusObjectWithProperties.__init__(self, self.bus,
765
1254
self.dbus_object_path)
766
767
def _get_approvals_pending(self):
768
return self._approvals_pending
769
def _set_approvals_pending(self, value):
770
old_value = self._approvals_pending
771
self._approvals_pending = value
772
bval = bool(value)
773
if (hasattr(self, "dbus_object_path")
774
and bval is not bool(old_value)):
775
dbus_bool = dbus.Boolean(bval, variant_level=1)
776
self.PropertyChanged(dbus.String("ApprovalPending"),
777
dbus_bool)
778
779
approvals_pending = property(_get_approvals_pending,
780
_set_approvals_pending)
781
del _get_approvals_pending, _set_approvals_pending
782
783
@staticmethod
784
def _datetime_to_dbus(dt, variant_level=0):
785
"""Convert a UTC datetime.datetime() to a D-Bus type."""
786
return dbus.String(dt.isoformat(),
787
variant_level=variant_level)
788
789
def enable(self):
790
oldstate = getattr(self, "enabled", False)
791
r = Client.enable(self)
792
if oldstate != self.enabled:
793
# Emit D-Bus signals
794
self.PropertyChanged(dbus.String("Enabled"),
795
dbus.Boolean(True, variant_level=1))
796
self.PropertyChanged(
797
dbus.String("LastEnabled"),
798
self._datetime_to_dbus(self.last_enabled,
799
variant_level=1))
800
return r
801
802
def disable(self, quiet = False):
803
oldstate = getattr(self, "enabled", False)
804
r = Client.disable(self, quiet=quiet)
805
if not quiet and oldstate != self.enabled:
806
# Emit D-Bus signal
807
self.PropertyChanged(dbus.String("Enabled"),
808
dbus.Boolean(False, variant_level=1))
809
return r
1255
1256
def notifychangeproperty(transform_func,
1257
dbus_name, type_func=lambda x: x,
1258
variant_level=1):
1259
""" Modify a variable so that it's a property which announces
1260
its changes to DBus.
1261
1262
transform_fun: Function that takes a value and a variant_level
1263
and transforms it to a D-Bus type.
1264
dbus_name: D-Bus name of the variable
1265
type_func: Function that transform the value before sending it
1266
to the D-Bus. Default: no transform
1267
variant_level: D-Bus variant level. Default: 1
1268
"""
1269
attrname = "_{0}".format(dbus_name)
1270
def setter(self, value):
1271
if hasattr(self, "dbus_object_path"):
1272
if (not hasattr(self, attrname) or
1273
type_func(getattr(self, attrname, None))
1274
!= type_func(value)):
1275
dbus_value = transform_func(type_func(value),
1276
variant_level
1277
=variant_level)
1278
self.PropertyChanged(dbus.String(dbus_name),
1279
dbus_value)
1280
setattr(self, attrname, value)
1281
1282
return property(lambda self: getattr(self, attrname), setter)
1283
1284
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1285
approvals_pending = notifychangeproperty(dbus.Boolean,
1286
"ApprovalPending",
1287
type_func = bool)
1288
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1289
last_enabled = notifychangeproperty(datetime_to_dbus,
1290
"LastEnabled")
1291
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1292
type_func = lambda checker:
1293
checker is not None)
1294
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1295
"LastCheckedOK")
1296
last_checker_status = notifychangeproperty(dbus.Int16,
1297
"LastCheckerStatus")
1298
last_approval_request = notifychangeproperty(
1299
datetime_to_dbus, "LastApprovalRequest")
1300
approved_by_default = notifychangeproperty(dbus.Boolean,
1301
"ApprovedByDefault")
1302
approval_delay = notifychangeproperty(dbus.UInt64,
1303
"ApprovalDelay",
1304
type_func =
1305
timedelta_to_milliseconds)
1306
approval_duration = notifychangeproperty(
1307
dbus.UInt64, "ApprovalDuration",
1308
type_func = timedelta_to_milliseconds)
1309
host = notifychangeproperty(dbus.String, "Host")
1310
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1311
type_func =
1312
timedelta_to_milliseconds)
1313
extended_timeout = notifychangeproperty(
1314
dbus.UInt64, "ExtendedTimeout",
1315
type_func = timedelta_to_milliseconds)
1316
interval = notifychangeproperty(dbus.UInt64,
1317
"Interval",
1318
type_func =
1319
timedelta_to_milliseconds)
1320
checker_command = notifychangeproperty(dbus.String, "Checker")
1321
1322
del notifychangeproperty
810
1323
811
1324
def __del__(self, *args, **kwargs):
812
1325
try:
821
1334
*args, **kwargs):
822
1335
self.checker_callback_tag = None
823
1336
self.checker = None
824
# Emit D-Bus signal
825
self.PropertyChanged(dbus.String("CheckerRunning"),
826
dbus.Boolean(False, variant_level=1))
827
1337
if os.WIFEXITED(condition):
828
1338
exitstatus = os.WEXITSTATUS(condition)
829
1339
# Emit D-Bus signal
839
1349
return Client.checker_callback(self, pid, condition, command,
840
1350
*args, **kwargs)
841
1351
842
def checked_ok(self, *args, **kwargs):
843
Client.checked_ok(self, *args, **kwargs)
844
# Emit D-Bus signal
845
self.PropertyChanged(
846
dbus.String("LastCheckedOK"),
847
(self._datetime_to_dbus(self.last_checked_ok,
848
variant_level=1)))
849
850
def need_approval(self, *args, **kwargs):
851
r = Client.need_approval(self, *args, **kwargs)
852
# Emit D-Bus signal
853
self.PropertyChanged(
854
dbus.String("LastApprovalRequest"),
855
(self._datetime_to_dbus(self.last_approval_request,
856
variant_level=1)))
857
return r
858
859
1352
def start_checker(self, *args, **kwargs):
860
1353
old_checker = self.checker
861
1354
if self.checker is not None:
868
1361
and old_checker_pid != self.checker.pid):
869
1362
# Emit D-Bus signal
870
1363
self.CheckerStarted(self.current_checker_command)
871
self.PropertyChanged(
872
dbus.String("CheckerRunning"),
873
dbus.Boolean(True, variant_level=1))
874
1364
return r
875
1365
876
def stop_checker(self, *args, **kwargs):
877
old_checker = getattr(self, "checker", None)
878
r = Client.stop_checker(self, *args, **kwargs)
879
if (old_checker is not None
880
and getattr(self, "checker", None) is None):
881
self.PropertyChanged(dbus.String("CheckerRunning"),
882
dbus.Boolean(False, variant_level=1))
883
return r
884
885
1366
def _reset_approved(self):
886
self._approved = None
1367
self.approved = None
887
1368
return False
888
1369
889
1370
def approve(self, value=True):
890
self.send_changedstate()
891
self._approved = value
892
gobject.timeout_add(self._timedelta_to_milliseconds
1371
self.approved = value
1372
gobject.timeout_add(timedelta_to_milliseconds
893
1373
(self.approval_duration),
894
1374
self._reset_approved)
895
1375
self.send_changedstate()
896
1376
897
1377
## D-Bus methods, signals & properties
898
_interface = "se.bsnet.fukt.Mandos.Client"
1378
_interface = "se.recompile.Mandos.Client"
1379
1380
## Interfaces
1381
1382
@dbus_interface_annotations(_interface)
1383
def _foo(self):
1384
return { "org.freedesktop.DBus.Property.EmitsChangedSignal":
1385
"false"}
899
1386
900
1387
## Signals
901
1388
987
1474
if value is None: # get
988
1475
return dbus.Boolean(self.approved_by_default)
989
1476
self.approved_by_default = bool(value)
990
# Emit D-Bus signal
991
self.PropertyChanged(dbus.String("ApprovedByDefault"),
992
dbus.Boolean(value, variant_level=1))
993
1477
994
1478
# ApprovalDelay - property
995
1479
@dbus_service_property(_interface, signature="t",
998
1482
if value is None: # get
999
1483
return dbus.UInt64(self.approval_delay_milliseconds())
1000
1484
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1001
# Emit D-Bus signal
1002
self.PropertyChanged(dbus.String("ApprovalDelay"),
1003
dbus.UInt64(value, variant_level=1))
1004
1485
1005
1486
# ApprovalDuration - property
1006
1487
@dbus_service_property(_interface, signature="t",
1007
1488
access="readwrite")
1008
1489
def ApprovalDuration_dbus_property(self, value=None):
1009
1490
if value is None: # get
1010
return dbus.UInt64(self._timedelta_to_milliseconds(
1491
return dbus.UInt64(timedelta_to_milliseconds(
1011
1492
self.approval_duration))
1012
1493
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1013
# Emit D-Bus signal
1014
self.PropertyChanged(dbus.String("ApprovalDuration"),
1015
dbus.UInt64(value, variant_level=1))
1016
1494
1017
1495
# Name - property
1018
1496
@dbus_service_property(_interface, signature="s", access="read")
1030
1508
def Host_dbus_property(self, value=None):
1031
1509
if value is None: # get
1032
1510
return dbus.String(self.host)
1033
self.host = value
1034
# Emit D-Bus signal
1035
self.PropertyChanged(dbus.String("Host"),
1036
dbus.String(value, variant_level=1))
1511
self.host = unicode(value)
1037
1512
1038
1513
# Created - property
1039
1514
@dbus_service_property(_interface, signature="s", access="read")
1040
1515
def Created_dbus_property(self):
1041
return dbus.String(self._datetime_to_dbus(self.created))
1516
return datetime_to_dbus(self.created)
1042
1517
1043
1518
# LastEnabled - property
1044
1519
@dbus_service_property(_interface, signature="s", access="read")
1045
1520
def LastEnabled_dbus_property(self):
1046
if self.last_enabled is None:
1047
return dbus.String("")
1048
return dbus.String(self._datetime_to_dbus(self.last_enabled))
1521
return datetime_to_dbus(self.last_enabled)
1049
1522
1050
1523
# Enabled - property
1051
1524
@dbus_service_property(_interface, signature="b",
1065
1538
if value is not None:
1066
1539
self.checked_ok()
1067
1540
return
1068
if self.last_checked_ok is None:
1069
return dbus.String("")
1070
return dbus.String(self._datetime_to_dbus(self
1071
.last_checked_ok))
1541
return datetime_to_dbus(self.last_checked_ok)
1542
1543
# LastCheckerStatus - property
1544
@dbus_service_property(_interface, signature="n",
1545
access="read")
1546
def LastCheckerStatus_dbus_property(self):
1547
return dbus.Int16(self.last_checker_status)
1548
1549
# Expires - property
1550
@dbus_service_property(_interface, signature="s", access="read")
1551
def Expires_dbus_property(self):
1552
return datetime_to_dbus(self.expires)
1072
1553
1073
1554
# LastApprovalRequest - property
1074
1555
@dbus_service_property(_interface, signature="s", access="read")
1075
1556
def LastApprovalRequest_dbus_property(self):
1076
if self.last_approval_request is None:
1077
return dbus.String("")
1078
return dbus.String(self.
1079
_datetime_to_dbus(self
1080
.last_approval_request))
1557
return datetime_to_dbus(self.last_approval_request)
1081
1558
1082
1559
# Timeout - property
1083
1560
@dbus_service_property(_interface, signature="t",
1085
1562
def Timeout_dbus_property(self, value=None):
1086
1563
if value is None: # get
1087
1564
return dbus.UInt64(self.timeout_milliseconds())
1565
old_timeout = self.timeout
1088
1566
self.timeout = datetime.timedelta(0, 0, 0, value)
1089
# Emit D-Bus signal
1090
self.PropertyChanged(dbus.String("Timeout"),
1091
dbus.UInt64(value, variant_level=1))
1092
if getattr(self, "disable_initiator_tag", None) is None:
1093
return
1094
# Reschedule timeout
1095
gobject.source_remove(self.disable_initiator_tag)
1096
self.disable_initiator_tag = None
1097
time_to_die = (self.
1098
_timedelta_to_milliseconds((self
1099
.last_checked_ok
1100
+ self.timeout)
1101
- datetime.datetime
1102
.utcnow()))
1103
if time_to_die <= 0:
1104
# The timeout has passed
1105
self.disable()
1106
else:
1107
self.disable_initiator_tag = (gobject.timeout_add
1108
(time_to_die, self.disable))
1567
# Reschedule disabling
1568
if self.enabled:
1569
now = datetime.datetime.utcnow()
1570
self.expires += self.timeout - old_timeout
1571
if self.expires <= now:
1572
# The timeout has passed
1573
self.disable()
1574
else:
1575
if (getattr(self, "disable_initiator_tag", None)
1576
is None):
1577
return
1578
gobject.source_remove(self.disable_initiator_tag)
1579
self.disable_initiator_tag = (
1580
gobject.timeout_add(
1581
timedelta_to_milliseconds(self.expires - now),
1582
self.disable))
1583
1584
# ExtendedTimeout - property
1585
@dbus_service_property(_interface, signature="t",
1586
access="readwrite")
1587
def ExtendedTimeout_dbus_property(self, value=None):
1588
if value is None: # get
1589
return dbus.UInt64(self.extended_timeout_milliseconds())
1590
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1109
1591
1110
1592
# Interval - property
1111
1593
@dbus_service_property(_interface, signature="t",
1114
1596
if value is None: # get
1115
1597
return dbus.UInt64(self.interval_milliseconds())
1116
1598
self.interval = datetime.timedelta(0, 0, 0, value)
1117
# Emit D-Bus signal
1118
self.PropertyChanged(dbus.String("Interval"),
1119
dbus.UInt64(value, variant_level=1))
1120
1599
if getattr(self, "checker_initiator_tag", None) is None:
1121
1600
return
1122
# Reschedule checker run
1123
gobject.source_remove(self.checker_initiator_tag)
1124
self.checker_initiator_tag = (gobject.timeout_add
1125
(value, self.start_checker))
1126
self.start_checker() # Start one now, too
1127
1601
if self.enabled:
1602
# Reschedule checker run
1603
gobject.source_remove(self.checker_initiator_tag)
1604
self.checker_initiator_tag = (gobject.timeout_add
1605
(value, self.start_checker))
1606
self.start_checker() # Start one now, too
1607
1128
1608
# Checker - property
1129
1609
@dbus_service_property(_interface, signature="s",
1130
1610
access="readwrite")
1131
1611
def Checker_dbus_property(self, value=None):
1132
1612
if value is None: # get
1133
1613
return dbus.String(self.checker_command)
1134
self.checker_command = value
1135
# Emit D-Bus signal
1136
self.PropertyChanged(dbus.String("Checker"),
1137
dbus.String(self.checker_command,
1138
variant_level=1))
1614
self.checker_command = unicode(value)
1139
1615
1140
1616
# CheckerRunning - property
1141
1617
@dbus_service_property(_interface, signature="b",
1168
1644
self._pipe.send(('init', fpr, address))
1169
1645
if not self._pipe.recv():
1170
1646
raise KeyError()
1171
1647
1172
1648
def __getattribute__(self, name):
1173
if(name == '_pipe'):
1649
if name == '_pipe':
1174
1650
return super(ProxyClient, self).__getattribute__(name)
1175
1651
self._pipe.send(('getattr', name))
1176
1652
data = self._pipe.recv()
1181
1657
self._pipe.send(('funcall', name, args, kwargs))
1182
1658
return self._pipe.recv()[1]
1183
1659
return func
1184
1660
1185
1661
def __setattr__(self, name, value):
1186
if(name == '_pipe'):
1662
if name == '_pipe':
1187
1663
return super(ProxyClient, self).__setattr__(name, value)
1188
1664
self._pipe.send(('setattr', name, value))
1189
1665
1200
1676
unicode(self.client_address))
1201
1677
logger.debug("Pipe FD: %d",
1202
1678
self.server.child_pipe.fileno())
1203
1679
1204
1680
session = (gnutls.connection
1205
1681
.ClientSession(self.request,
1206
1682
gnutls.connection
1207
1683
.X509Credentials()))
1208
1684
1209
1685
# Note: gnutls.connection.X509Credentials is really a
1210
1686
# generic GnuTLS certificate credentials object so long as
1211
1687
# no X.509 keys are added to it. Therefore, we can use it
1212
1688
# here despite using OpenPGP certificates.
1213
1689
1214
1690
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1215
1691
# "+AES-256-CBC", "+SHA1",
1216
1692
# "+COMP-NULL", "+CTYPE-OPENPGP",
1222
1698
(gnutls.library.functions
1223
1699
.gnutls_priority_set_direct(session._c_object,
1224
1700
priority, None))
1225
1701
1226
1702
# Start communication using the Mandos protocol
1227
1703
# Get protocol number
1228
1704
line = self.request.makefile().readline()
1229
1705
logger.debug("Protocol version: %r", line)
1230
1706
try:
1231
1707
if int(line.strip().split()[0]) > 1:
1232
raise RuntimeError
1708
raise RuntimeError(line)
1233
1709
except (ValueError, IndexError, RuntimeError) as error:
1234
1710
logger.error("Unknown protocol version: %s", error)
1235
1711
return
1236
1712
1237
1713
# Start GnuTLS connection
1238
1714
try:
1239
1715
session.handshake()
1243
1719
# established. Just abandon the request.
1244
1720
return
1245
1721
logger.debug("Handshake succeeded")
1246
1722
1247
1723
approval_required = False
1248
1724
try:
1249
1725
try:
1254
1730
logger.warning("Bad certificate: %s", error)
1255
1731
return
1256
1732
logger.debug("Fingerprint: %s", fpr)
1257
1733
1258
1734
try:
1259
1735
client = ProxyClient(child_pipe, fpr,
1260
1736
self.client_address)
1272
1748
client.name)
1273
1749
if self.server.use_dbus:
1274
1750
# Emit D-Bus signal
1275
client.Rejected("Disabled")
1751
client.Rejected("Disabled")
1276
1752
return
1277
1753
1278
if client._approved or not client.approval_delay:
1754
if client.approved or not client.approval_delay:
1279
1755
#We are approved or approval is disabled
1280
1756
break
1281
elif client._approved is None:
1757
elif client.approved is None:
1282
1758
logger.info("Client %s needs approval",
1283
1759
client.name)
1284
1760
if self.server.use_dbus:
1295
1771
return
1296
1772
1297
1773
#wait until timeout or approved
1298
#x = float(client._timedelta_to_milliseconds(delay))
1299
1774
time = datetime.datetime.now()
1300
1775
client.changedstate.acquire()
1301
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
1776
client.changedstate.wait(
1777
float(timedelta_to_milliseconds(delay)
1778
/ 1000))
1302
1779
client.changedstate.release()
1303
1780
time2 = datetime.datetime.now()
1304
1781
if (time2 - time) >= delay:
1320
1797
try:
1321
1798
sent = session.send(client.secret[sent_size:])
1322
1799
except gnutls.errors.GNUTLSError as error:
1323
logger.warning("gnutls send failed")
1800
logger.warning("gnutls send failed",
1801
exc_info=error)
1324
1802
return
1325
1803
logger.debug("Sent: %d, remaining: %d",
1326
1804
sent, len(client.secret)
1327
1805
- (sent_size + sent))
1328
1806
sent_size += sent
1329
1807
1330
1808
logger.info("Sending secret to %s", client.name)
1331
# bump the timeout as if seen
1332
client.checked_ok()
1809
# bump the timeout using extended_timeout
1810
client.bump_timeout(client.extended_timeout)
1333
1811
if self.server.use_dbus:
1334
1812
# Emit D-Bus signal
1335
1813
client.GotSecret()
1340
1818
try:
1341
1819
session.bye()
1342
1820
except gnutls.errors.GNUTLSError as error:
1343
logger.warning("GnuTLS bye failed")
1821
logger.warning("GnuTLS bye failed",
1822
exc_info=error)
1344
1823
1345
1824
@staticmethod
1346
1825
def peer_certificate(session):
1402
1881
# Convert the buffer to a Python bytestring
1403
1882
fpr = ctypes.string_at(buf, buf_len.value)
1404
1883
# Convert the bytestring to hexadecimal notation
1405
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
1884
hex_fpr = binascii.hexlify(fpr).upper()
1406
1885
return hex_fpr
1407
1886
1408
1887
1411
1890
def sub_process_main(self, request, address):
1412
1891
try:
1413
1892
self.finish_request(request, address)
1414
except:
1893
except Exception:
1415
1894
self.handle_error(request, address)
1416
1895
self.close_request(request)
1417
1896
1418
1897
def process_request(self, request, address):
1419
1898
"""Start a new process to process the request."""
1420
multiprocessing.Process(target = self.sub_process_main,
1421
args = (request, address)).start()
1899
proc = multiprocessing.Process(target = self.sub_process_main,
1900
args = (request, address))
1901
proc.start()
1902
return proc
1903
1422
1904
1423
1905
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1424
1906
""" adds a pipe to the MixIn """
1428
1910
This function creates a new pipe in self.pipe
1429
1911
"""
1430
1912
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1431
1432
super(MultiprocessingMixInWithPipe,
1433
self).process_request(request, client_address)
1913
1914
proc = MultiprocessingMixIn.process_request(self, request,
1915
client_address)
1434
1916
self.child_pipe.close()
1435
self.add_pipe(parent_pipe)
1436
1437
def add_pipe(self, parent_pipe):
1917
self.add_pipe(parent_pipe, proc)
1918
1919
def add_pipe(self, parent_pipe, proc):
1438
1920
"""Dummy function; override as necessary"""
1439
raise NotImplementedError
1921
raise NotImplementedError()
1922
1440
1923
1441
1924
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1442
1925
socketserver.TCPServer, object):
1448
1931
use_ipv6: Boolean; to use IPv6 or not
1449
1932
"""
1450
1933
def __init__(self, server_address, RequestHandlerClass,
1451
interface=None, use_ipv6=True):
1934
interface=None, use_ipv6=True, socketfd=None):
1935
"""If socketfd is set, use that file descriptor instead of
1936
creating a new one with socket.socket().
1937
"""
1452
1938
self.interface = interface
1453
1939
if use_ipv6:
1454
1940
self.address_family = socket.AF_INET6
1941
if socketfd is not None:
1942
# Save the file descriptor
1943
self.socketfd = socketfd
1944
# Save the original socket.socket() function
1945
self.socket_socket = socket.socket
1946
# To implement --socket, we monkey patch socket.socket.
1947
#
1948
# (When socketserver.TCPServer is a new-style class, we
1949
# could make self.socket into a property instead of monkey
1950
# patching socket.socket.)
1951
#
1952
# Create a one-time-only replacement for socket.socket()
1953
@functools.wraps(socket.socket)
1954
def socket_wrapper(*args, **kwargs):
1955
# Restore original function so subsequent calls are
1956
# not affected.
1957
socket.socket = self.socket_socket
1958
del self.socket_socket
1959
# This time only, return a new socket object from the
1960
# saved file descriptor.
1961
return socket.fromfd(self.socketfd, *args, **kwargs)
1962
# Replace socket.socket() function with wrapper
1963
socket.socket = socket_wrapper
1964
# The socketserver.TCPServer.__init__ will call
1965
# socket.socket(), which might be our replacement,
1966
# socket_wrapper(), if socketfd was set.
1455
1967
socketserver.TCPServer.__init__(self, server_address,
1456
1968
RequestHandlerClass)
1969
1457
1970
def server_bind(self):
1458
1971
"""This overrides the normal server_bind() function
1459
1972
to bind to an interface if one was specified, and also NOT to
1467
1980
try:
1468
1981
self.socket.setsockopt(socket.SOL_SOCKET,
1469
1982
SO_BINDTODEVICE,
1470
str(self.interface
1471
+ '\0'))
1983
str(self.interface + '\0'))
1472
1984
except socket.error as error:
1473
if error[0] == errno.EPERM:
1474
logger.error("No permission to"
1475
" bind to interface %s",
1476
self.interface)
1477
elif error[0] == errno.ENOPROTOOPT:
1985
if error.errno == errno.EPERM:
1986
logger.error("No permission to bind to"
1987
" interface %s", self.interface)
1988
elif error.errno == errno.ENOPROTOOPT:
1478
1989
logger.error("SO_BINDTODEVICE not available;"
1479
1990
" cannot bind to interface %s",
1480
1991
self.interface)
1992
elif error.errno == errno.ENODEV:
1993
logger.error("Interface %s does not exist,"
1994
" cannot bind", self.interface)
1481
1995
else:
1482
1996
raise
1483
1997
# Only bind(2) the socket if we really need to.
1486
2000
if self.address_family == socket.AF_INET6:
1487
2001
any_address = "::" # in6addr_any
1488
2002
else:
1489
any_address = socket.INADDR_ANY
2003
any_address = "0.0.0.0" # INADDR_ANY
1490
2004
self.server_address = (any_address,
1491
2005
self.server_address[1])
1492
2006
elif not self.server_address[1]:
1513
2027
"""
1514
2028
def __init__(self, server_address, RequestHandlerClass,
1515
2029
interface=None, use_ipv6=True, clients=None,
1516
gnutls_priority=None, use_dbus=True):
2030
gnutls_priority=None, use_dbus=True, socketfd=None):
1517
2031
self.enabled = False
1518
2032
self.clients = clients
1519
2033
if self.clients is None:
1520
self.clients = set()
2034
self.clients = {}
1521
2035
self.use_dbus = use_dbus
1522
2036
self.gnutls_priority = gnutls_priority
1523
2037
IPv6_TCPServer.__init__(self, server_address,
1524
2038
RequestHandlerClass,
1525
2039
interface = interface,
1526
use_ipv6 = use_ipv6)
2040
use_ipv6 = use_ipv6,
2041
socketfd = socketfd)
1527
2042
def server_activate(self):
1528
2043
if self.enabled:
1529
2044
return socketserver.TCPServer.server_activate(self)
2045
1530
2046
def enable(self):
1531
2047
self.enabled = True
1532
def add_pipe(self, parent_pipe):
2048
2049
def add_pipe(self, parent_pipe, proc):
1533
2050
# Call "handle_ipc" for both data and EOF events
1534
2051
gobject.io_add_watch(parent_pipe.fileno(),
1535
2052
gobject.IO_IN | gobject.IO_HUP,
1536
2053
functools.partial(self.handle_ipc,
1537
parent_pipe = parent_pipe))
1538
2054
parent_pipe =
2055
parent_pipe,
2056
proc = proc))
2057
1539
2058
def handle_ipc(self, source, condition, parent_pipe=None,
1540
client_object=None):
1541
condition_names = {
1542
gobject.IO_IN: "IN", # There is data to read.
1543
gobject.IO_OUT: "OUT", # Data can be written (without
1544
# blocking).
1545
gobject.IO_PRI: "PRI", # There is urgent data to read.
1546
gobject.IO_ERR: "ERR", # Error condition.
1547
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1548
# broken, usually for pipes and
1549
# sockets).
1550
}
1551
conditions_string = ' | '.join(name
1552
for cond, name in
1553
condition_names.iteritems()
1554
if cond & condition)
1555
# error or the other end of multiprocessing.Pipe has closed
1556
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2059
proc = None, client_object=None):
2060
# error, or the other end of multiprocessing.Pipe has closed
2061
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2062
# Wait for other process to exit
2063
proc.join()
1557
2064
return False
1558
2065
1559
2066
# Read a request from the child
1564
2071
fpr = request[1]
1565
2072
address = request[2]
1566
2073
1567
for c in self.clients:
2074
for c in self.clients.itervalues():
1568
2075
if c.fingerprint == fpr:
1569
2076
client = c
1570
2077
break
1573
2080
"dress: %s", fpr, address)
1574
2081
if self.use_dbus:
1575
2082
# Emit D-Bus signal
1576
mandos_dbus_service.ClientNotFound(fpr, address[0])
2083
mandos_dbus_service.ClientNotFound(fpr,
2084
address[0])
1577
2085
parent_pipe.send(False)
1578
2086
return False
1579
2087
1580
2088
gobject.io_add_watch(parent_pipe.fileno(),
1581
2089
gobject.IO_IN | gobject.IO_HUP,
1582
2090
functools.partial(self.handle_ipc,
1583
parent_pipe = parent_pipe,
1584
client_object = client))
2091
parent_pipe =
2092
parent_pipe,
2093
proc = proc,
2094
client_object =
2095
client))
1585
2096
parent_pipe.send(True)
1586
# remove the old hook in favor of the new above hook on same fileno
2097
# remove the old hook in favor of the new above hook on
2098
# same fileno
1587
2099
return False
1588
2100
if command == 'funcall':
1589
2101
funcname = request[1]
1590
2102
args = request[2]
1591
2103
kwargs = request[3]
1592
2104
1593
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
1594
2105
parent_pipe.send(('data', getattr(client_object,
2106
funcname)(*args,
2107
**kwargs)))
2108
1595
2109
if command == 'getattr':
1596
2110
attrname = request[1]
1597
2111
if callable(client_object.__getattribute__(attrname)):
1598
2112
parent_pipe.send(('function',))
1599
2113
else:
1600
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
2114
parent_pipe.send(('data', client_object
2115
.__getattribute__(attrname)))
1601
2116
1602
2117
if command == 'setattr':
1603
2118
attrname = request[1]
1604
2119
value = request[2]
1605
2120
setattr(client_object, attrname, value)
1606
2121
1607
2122
return True
1608
2123
1609
2124
2125
def rfc3339_duration_to_delta(duration):
2126
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2127
2128
>>> rfc3339_duration_to_delta("P7D")
2129
datetime.timedelta(7)
2130
>>> rfc3339_duration_to_delta("PT60S")
2131
datetime.timedelta(0, 60)
2132
>>> rfc3339_duration_to_delta("PT60M")
2133
datetime.timedelta(0, 3600)
2134
>>> rfc3339_duration_to_delta("PT24H")
2135
datetime.timedelta(1)
2136
>>> rfc3339_duration_to_delta("P1W")
2137
datetime.timedelta(7)
2138
>>> rfc3339_duration_to_delta("PT5M30S")
2139
datetime.timedelta(0, 330)
2140
>>> rfc3339_duration_to_delta("P1DT3M20S")
2141
datetime.timedelta(1, 200)
2142
"""
2143
2144
# Parsing an RFC 3339 duration with regular expressions is not
2145
# possible - there would have to be multiple places for the same
2146
# values, like seconds. The current code, while more esoteric, is
2147
# cleaner without depending on a parsing library. If Python had a
2148
# built-in library for parsing we would use it, but we'd like to
2149
# avoid excessive use of external libraries.
2150
2151
# New type for defining tokens, syntax, and semantics all-in-one
2152
Token = collections.namedtuple("Token",
2153
("regexp", # To match token; if
2154
# "value" is not None,
2155
# must have a "group"
2156
# containing digits
2157
"value", # datetime.timedelta or
2158
# None
2159
"followers")) # Tokens valid after
2160
# this token
2161
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2162
# the "duration" ABNF definition in RFC 3339, Appendix A.
2163
token_end = Token(re.compile(r"$"), None, frozenset())
2164
token_second = Token(re.compile(r"(\d+)S"),
2165
datetime.timedelta(seconds=1),
2166
frozenset((token_end,)))
2167
token_minute = Token(re.compile(r"(\d+)M"),
2168
datetime.timedelta(minutes=1),
2169
frozenset((token_second, token_end)))
2170
token_hour = Token(re.compile(r"(\d+)H"),
2171
datetime.timedelta(hours=1),
2172
frozenset((token_minute, token_end)))
2173
token_time = Token(re.compile(r"T"),
2174
None,
2175
frozenset((token_hour, token_minute,
2176
token_second)))
2177
token_day = Token(re.compile(r"(\d+)D"),
2178
datetime.timedelta(days=1),
2179
frozenset((token_time, token_end)))
2180
token_month = Token(re.compile(r"(\d+)M"),
2181
datetime.timedelta(weeks=4),
2182
frozenset((token_day, token_end)))
2183
token_year = Token(re.compile(r"(\d+)Y"),
2184
datetime.timedelta(weeks=52),
2185
frozenset((token_month, token_end)))
2186
token_week = Token(re.compile(r"(\d+)W"),
2187
datetime.timedelta(weeks=1),
2188
frozenset((token_end,)))
2189
token_duration = Token(re.compile(r"P"), None,
2190
frozenset((token_year, token_month,
2191
token_day, token_time,
2192
token_week))),
2193
# Define starting values
2194
value = datetime.timedelta() # Value so far
2195
found_token = None
2196
followers = frozenset(token_duration,) # Following valid tokens
2197
s = duration # String left to parse
2198
# Loop until end token is found
2199
while found_token is not token_end:
2200
# Search for any currently valid tokens
2201
for token in followers:
2202
match = token.regexp.match(s)
2203
if match is not None:
2204
# Token found
2205
if token.value is not None:
2206
# Value found, parse digits
2207
factor = int(match.group(1), 10)
2208
# Add to value so far
2209
value += factor * token.value
2210
# Strip token from string
2211
s = token.regexp.sub("", s, 1)
2212
# Go to found token
2213
found_token = token
2214
# Set valid next tokens
2215
followers = found_token.followers
2216
break
2217
else:
2218
# No currently valid tokens were found
2219
raise ValueError("Invalid RFC 3339 duration")
2220
# End token found
2221
return value
2222
2223
1610
2224
def string_to_delta(interval):
1611
2225
"""Parse a string and return a datetime.timedelta
1612
2226
1623
2237
>>> string_to_delta('5m 30s')
1624
2238
datetime.timedelta(0, 330)
1625
2239
"""
2240
2241
try:
2242
return rfc3339_duration_to_delta(interval)
2243
except ValueError:
2244
pass
2245
1626
2246
timevalue = datetime.timedelta(0)
1627
2247
for s in interval.split():
1628
2248
try:
1639
2259
elif suffix == "w":
1640
2260
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1641
2261
else:
1642
raise ValueError("Unknown suffix %r" % suffix)
1643
except (ValueError, IndexError) as e:
2262
raise ValueError("Unknown suffix {0!r}"
2263
.format(suffix))
2264
except IndexError as e:
1644
2265
raise ValueError(*(e.args))
1645
2266
timevalue += delta
1646
2267
return timevalue
1647
2268
1648
2269
1649
def if_nametoindex(interface):
1650
"""Call the C function if_nametoindex(), or equivalent
1651
1652
Note: This function cannot accept a unicode string."""
1653
global if_nametoindex
1654
try:
1655
if_nametoindex = (ctypes.cdll.LoadLibrary
1656
(ctypes.util.find_library("c"))
1657
.if_nametoindex)
1658
except (OSError, AttributeError):
1659
logger.warning("Doing if_nametoindex the hard way")
1660
def if_nametoindex(interface):
1661
"Get an interface index the hard way, i.e. using fcntl()"
1662
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1663
with contextlib.closing(socket.socket()) as s:
1664
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1665
struct.pack(str("16s16x"),
1666
interface))
1667
interface_index = struct.unpack(str("I"),
1668
ifreq[16:20])[0]
1669
return interface_index
1670
return if_nametoindex(interface)
1671
1672
1673
2270
def daemon(nochdir = False, noclose = False):
1674
2271
"""See daemon(3). Standard BSD Unix function.
1675
2272
1683
2280
sys.exit()
1684
2281
if not noclose:
1685
2282
# Close all standard open file descriptors
1686
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2283
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1687
2284
if not stat.S_ISCHR(os.fstat(null).st_mode):
1688
2285
raise OSError(errno.ENODEV,
1689
"%s not a character device"
1690
% os.path.devnull)
2286
"{0} not a character device"
2287
.format(os.devnull))
1691
2288
os.dup2(null, sys.stdin.fileno())
1692
2289
os.dup2(null, sys.stdout.fileno())
1693
2290
os.dup2(null, sys.stderr.fileno())
1702
2299
1703
2300
parser = argparse.ArgumentParser()
1704
2301
parser.add_argument("-v", "--version", action="version",
1705
version = "%%(prog)s %s" % version,
2302
version = "%(prog)s {0}".format(version),
1706
2303
help="show version number and exit")
1707
2304
parser.add_argument("-i", "--interface", metavar="IF",
1708
2305
help="Bind to interface IF")
1714
2311
help="Run self-test")
1715
2312
parser.add_argument("--debug", action="store_true",
1716
2313
help="Debug mode; run in foreground and log"
1717
" to terminal")
2314
" to terminal", default=None)
1718
2315
parser.add_argument("--debuglevel", metavar="LEVEL",
1719
2316
help="Debug level for stdout output")
1720
2317
parser.add_argument("--priority", help="GnuTLS"
1727
2324
" files")
1728
2325
parser.add_argument("--no-dbus", action="store_false",
1729
2326
dest="use_dbus", help="Do not provide D-Bus"
1730
" system bus interface")
2327
" system bus interface", default=None)
1731
2328
parser.add_argument("--no-ipv6", action="store_false",
1732
dest="use_ipv6", help="Do not use IPv6")
2329
dest="use_ipv6", help="Do not use IPv6",
2330
default=None)
2331
parser.add_argument("--no-restore", action="store_false",
2332
dest="restore", help="Do not restore stored"
2333
" state", default=None)
2334
parser.add_argument("--socket", type=int,
2335
help="Specify a file descriptor to a network"
2336
" socket to use instead of creating one")
2337
parser.add_argument("--statedir", metavar="DIR",
2338
help="Directory to save/restore state in")
2339
parser.add_argument("--foreground", action="store_true",
2340
help="Run in foreground", default=None)
2341
1733
2342
options = parser.parse_args()
1734
2343
1735
2344
if options.check:
1736
2345
import doctest
1737
doctest.testmod()
1738
sys.exit()
2346
fail_count, test_count = doctest.testmod()
2347
sys.exit(os.EX_OK if fail_count == 0 else 1)
1739
2348
1740
2349
# Default values for config file for server-global settings
1741
2350
server_defaults = { "interface": "",
1743
2352
"port": "",
1744
2353
"debug": "False",
1745
2354
"priority":
1746
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2355
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:+SIGN-RSA-SHA224:+SIGN-RSA-RMD160",
1747
2356
"servicename": "Mandos",
1748
2357
"use_dbus": "True",
1749
2358
"use_ipv6": "True",
1750
2359
"debuglevel": "",
2360
"restore": "True",
2361
"socket": "",
2362
"statedir": "/var/lib/mandos",
2363
"foreground": "False",
1751
2364
}
1752
2365
1753
2366
# Parse config file for server-global settings
1758
2371
# Convert the SafeConfigParser object to a dict
1759
2372
server_settings = server_config.defaults()
1760
2373
# Use the appropriate methods on the non-string config options
1761
for option in ("debug", "use_dbus", "use_ipv6"):
2374
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
1762
2375
server_settings[option] = server_config.getboolean("DEFAULT",
1763
2376
option)
1764
2377
if server_settings["port"]:
1765
2378
server_settings["port"] = server_config.getint("DEFAULT",
1766
2379
"port")
2380
if server_settings["socket"]:
2381
server_settings["socket"] = server_config.getint("DEFAULT",
2382
"socket")
2383
# Later, stdin will, and stdout and stderr might, be dup'ed
2384
# over with an opened os.devnull. But we don't want this to
2385
# happen with a supplied network socket.
2386
if 0 <= server_settings["socket"] <= 2:
2387
server_settings["socket"] = os.dup(server_settings
2388
["socket"])
1767
2389
del server_config
1768
2390
1769
2391
# Override the settings from the config file with command line
1770
2392
# options, if set.
1771
2393
for option in ("interface", "address", "port", "debug",
1772
2394
"priority", "servicename", "configdir",
1773
"use_dbus", "use_ipv6", "debuglevel"):
2395
"use_dbus", "use_ipv6", "debuglevel", "restore",
2396
"statedir", "socket", "foreground"):
1774
2397
value = getattr(options, option)
1775
2398
if value is not None:
1776
2399
server_settings[option] = value
1779
2402
for option in server_settings.keys():
1780
2403
if type(server_settings[option]) is str:
1781
2404
server_settings[option] = unicode(server_settings[option])
2405
# Force all boolean options to be boolean
2406
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2407
"foreground"):
2408
server_settings[option] = bool(server_settings[option])
2409
# Debug implies foreground
2410
if server_settings["debug"]:
2411
server_settings["foreground"] = True
1782
2412
# Now we have our good server settings in "server_settings"
1783
2413
1784
2414
##################################################################
1788
2418
debuglevel = server_settings["debuglevel"]
1789
2419
use_dbus = server_settings["use_dbus"]
1790
2420
use_ipv6 = server_settings["use_ipv6"]
1791
2421
stored_state_path = os.path.join(server_settings["statedir"],
2422
stored_state_file)
2423
foreground = server_settings["foreground"]
2424
2425
if debug:
2426
initlogger(debug, logging.DEBUG)
2427
else:
2428
if not debuglevel:
2429
initlogger(debug)
2430
else:
2431
level = getattr(logging, debuglevel.upper())
2432
initlogger(debug, level)
2433
1792
2434
if server_settings["servicename"] != "Mandos":
1793
2435
syslogger.setFormatter(logging.Formatter
1794
('Mandos (%s) [%%(process)d]:'
1795
' %%(levelname)s: %%(message)s'
1796
% server_settings["servicename"]))
2436
('Mandos ({0}) [%(process)d]:'
2437
' %(levelname)s: %(message)s'
2438
.format(server_settings
2439
["servicename"])))
1797
2440
1798
2441
# Parse config file with clients
1799
client_defaults = { "timeout": "1h",
1800
"interval": "5m",
1801
"checker": "fping -q -- %%(host)s",
1802
"host": "",
1803
"approval_delay": "0s",
1804
"approval_duration": "1s",
1805
}
1806
client_config = configparser.SafeConfigParser(client_defaults)
2442
client_config = configparser.SafeConfigParser(Client
2443
.client_defaults)
1807
2444
client_config.read(os.path.join(server_settings["configdir"],
1808
2445
"clients.conf"))
1809
2446
1818
2455
use_ipv6=use_ipv6,
1819
2456
gnutls_priority=
1820
2457
server_settings["priority"],
1821
use_dbus=use_dbus)
1822
if not debug:
1823
pidfilename = "/var/run/mandos.pid"
2458
use_dbus=use_dbus,
2459
socketfd=(server_settings["socket"]
2460
or None))
2461
if not foreground:
2462
pidfilename = "/run/mandos.pid"
2463
if not os.path.isdir("/run/."):
2464
pidfilename = "/var/run/mandos.pid"
2465
pidfile = None
1824
2466
try:
1825
2467
pidfile = open(pidfilename, "w")
1826
except IOError:
1827
logger.error("Could not open file %r", pidfilename)
2468
except IOError as e:
2469
logger.error("Could not open file %r", pidfilename,
2470
exc_info=e)
1828
2471
1829
try:
1830
uid = pwd.getpwnam("_mandos").pw_uid
1831
gid = pwd.getpwnam("_mandos").pw_gid
1832
except KeyError:
2472
for name in ("_mandos", "mandos", "nobody"):
1833
2473
try:
1834
uid = pwd.getpwnam("mandos").pw_uid
1835
gid = pwd.getpwnam("mandos").pw_gid
2474
uid = pwd.getpwnam(name).pw_uid
2475
gid = pwd.getpwnam(name).pw_gid
2476
break
1836
2477
except KeyError:
1837
try:
1838
uid = pwd.getpwnam("nobody").pw_uid
1839
gid = pwd.getpwnam("nobody").pw_gid
1840
except KeyError:
1841
uid = 65534
1842
gid = 65534
2478
continue
2479
else:
2480
uid = 65534
2481
gid = 65534
1843
2482
try:
1844
2483
os.setgid(gid)
1845
2484
os.setuid(uid)
1846
2485
except OSError as error:
1847
if error[0] != errno.EPERM:
1848
raise error
2486
if error.errno != errno.EPERM:
2487
raise
1849
2488
1850
if not debug and not debuglevel:
1851
syslogger.setLevel(logging.WARNING)
1852
console.setLevel(logging.WARNING)
1853
if debuglevel:
1854
level = getattr(logging, debuglevel.upper())
1855
syslogger.setLevel(level)
1856
console.setLevel(level)
1857
1858
2489
if debug:
1859
2490
# Enable all possible GnuTLS debugging
1860
2491
1870
2501
.gnutls_global_set_log_function(debug_gnutls))
1871
2502
1872
2503
# Redirect stdin so all checkers get /dev/null
1873
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2504
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1874
2505
os.dup2(null, sys.stdin.fileno())
1875
2506
if null > 2:
1876
2507
os.close(null)
1877
else:
1878
# No console logging
1879
logger.removeHandler(console)
1880
2508
1881
2509
# Need to fork before connecting to D-Bus
1882
if not debug:
2510
if not foreground:
1883
2511
# Close all input and output, do double fork, etc.
1884
2512
daemon()
1885
2513
2514
# multiprocessing will use threads, so before we use gobject we
2515
# need to inform gobject that threads will be used.
2516
gobject.threads_init()
2517
1886
2518
global main_loop
1887
2519
# From the Avahi example code
1888
DBusGMainLoop(set_as_default=True )
2520
DBusGMainLoop(set_as_default=True)
1889
2521
main_loop = gobject.MainLoop()
1890
2522
bus = dbus.SystemBus()
1891
2523
# End of Avahi example code
1892
2524
if use_dbus:
1893
2525
try:
1894
bus_name = dbus.service.BusName("se.bsnet.fukt.Mandos",
2526
bus_name = dbus.service.BusName("se.recompile.Mandos",
1895
2527
bus, do_not_queue=True)
2528
old_bus_name = (dbus.service.BusName
2529
("se.bsnet.fukt.Mandos", bus,
2530
do_not_queue=True))
1896
2531
except dbus.exceptions.NameExistsException as e:
1897
logger.error(unicode(e) + ", disabling D-Bus")
2532
logger.error("Disabling D-Bus:", exc_info=e)
1898
2533
use_dbus = False
1899
2534
server_settings["use_dbus"] = False
1900
2535
tcp_server.use_dbus = False
1901
2536
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1902
service = AvahiService(name = server_settings["servicename"],
1903
servicetype = "_mandos._tcp",
1904
protocol = protocol, bus = bus)
2537
service = AvahiServiceToSyslog(name =
2538
server_settings["servicename"],
2539
servicetype = "_mandos._tcp",
2540
protocol = protocol, bus = bus)
1905
2541
if server_settings["interface"]:
1906
2542
service.interface = (if_nametoindex
1907
2543
(str(server_settings["interface"])))
1912
2548
client_class = Client
1913
2549
if use_dbus:
1914
2550
client_class = functools.partial(ClientDBus, bus = bus)
1915
def client_config_items(config, section):
1916
special_settings = {
1917
"approved_by_default":
1918
lambda: config.getboolean(section,
1919
"approved_by_default"),
1920
}
1921
for name, value in config.items(section):
2551
2552
client_settings = Client.config_parser(client_config)
2553
old_client_settings = {}
2554
clients_data = {}
2555
2556
# This is used to redirect stdout and stderr for checker processes
2557
global wnull
2558
wnull = open(os.devnull, "w") # A writable /dev/null
2559
# Only used if server is running in foreground but not in debug
2560
# mode
2561
if debug or not foreground:
2562
wnull.close()
2563
2564
# Get client data and settings from last running state.
2565
if server_settings["restore"]:
2566
try:
2567
with open(stored_state_path, "rb") as stored_state:
2568
clients_data, old_client_settings = (pickle.load
2569
(stored_state))
2570
os.remove(stored_state_path)
2571
except IOError as e:
2572
if e.errno == errno.ENOENT:
2573
logger.warning("Could not load persistent state: {0}"
2574
.format(os.strerror(e.errno)))
2575
else:
2576
logger.critical("Could not load persistent state:",
2577
exc_info=e)
2578
raise
2579
except EOFError as e:
2580
logger.warning("Could not load persistent state: "
2581
"EOFError:", exc_info=e)
2582
2583
with PGPEngine() as pgp:
2584
for client_name, client in clients_data.iteritems():
2585
# Skip removed clients
2586
if client_name not in client_settings:
2587
continue
2588
2589
# Decide which value to use after restoring saved state.
2590
# We have three different values: Old config file,
2591
# new config file, and saved state.
2592
# New config value takes precedence if it differs from old
2593
# config value, otherwise use saved state.
2594
for name, value in client_settings[client_name].items():
2595
try:
2596
# For each value in new config, check if it
2597
# differs from the old config value (Except for
2598
# the "secret" attribute)
2599
if (name != "secret" and
2600
value != old_client_settings[client_name]
2601
[name]):
2602
client[name] = value
2603
except KeyError:
2604
pass
2605
2606
# Clients who has passed its expire date can still be
2607
# enabled if its last checker was successful. Clients
2608
# whose checker succeeded before we stored its state is
2609
# assumed to have successfully run all checkers during
2610
# downtime.
2611
if client["enabled"]:
2612
if datetime.datetime.utcnow() >= client["expires"]:
2613
if not client["last_checked_ok"]:
2614
logger.warning(
2615
"disabling client {0} - Client never "
2616
"performed a successful checker"
2617
.format(client_name))
2618
client["enabled"] = False
2619
elif client["last_checker_status"] != 0:
2620
logger.warning(
2621
"disabling client {0} - Client "
2622
"last checker failed with error code {1}"
2623
.format(client_name,
2624
client["last_checker_status"]))
2625
client["enabled"] = False
2626
else:
2627
client["expires"] = (datetime.datetime
2628
.utcnow()
2629
+ client["timeout"])
2630
logger.debug("Last checker succeeded,"
2631
" keeping {0} enabled"
2632
.format(client_name))
1922
2633
try:
1923
yield (name, special_settings[name]())
1924
except KeyError:
1925
yield (name, value)
1926
1927
tcp_server.clients.update(set(
1928
client_class(name = section,
1929
config= dict(client_config_items(
1930
client_config, section)))
1931
for section in client_config.sections()))
2634
client["secret"] = (
2635
pgp.decrypt(client["encrypted_secret"],
2636
client_settings[client_name]
2637
["secret"]))
2638
except PGPError:
2639
# If decryption fails, we use secret from new settings
2640
logger.debug("Failed to decrypt {0} old secret"
2641
.format(client_name))
2642
client["secret"] = (
2643
client_settings[client_name]["secret"])
2644
2645
# Add/remove clients based on new changes made to config
2646
for client_name in (set(old_client_settings)
2647
- set(client_settings)):
2648
del clients_data[client_name]
2649
for client_name in (set(client_settings)
2650
- set(old_client_settings)):
2651
clients_data[client_name] = client_settings[client_name]
2652
2653
# Create all client objects
2654
for client_name, client in clients_data.iteritems():
2655
tcp_server.clients[client_name] = client_class(
2656
name = client_name, settings = client,
2657
server_settings = server_settings)
2658
1932
2659
if not tcp_server.clients:
1933
2660
logger.warning("No clients defined")
1934
1935
if not debug:
1936
try:
1937
with pidfile:
1938
pid = os.getpid()
1939
pidfile.write(str(pid) + "\n".encode("utf-8"))
1940
del pidfile
1941
except IOError:
1942
logger.error("Could not write to file %r with PID %d",
1943
pidfilename, pid)
1944
except NameError:
1945
# "pidfile" was never created
1946
pass
2661
2662
if not foreground:
2663
if pidfile is not None:
2664
try:
2665
with pidfile:
2666
pid = os.getpid()
2667
pidfile.write(str(pid) + "\n".encode("utf-8"))
2668
except IOError:
2669
logger.error("Could not write to file %r with PID %d",
2670
pidfilename, pid)
2671
del pidfile
1947
2672
del pidfilename
1948
1949
signal.signal(signal.SIGINT, signal.SIG_IGN)
1950
2673
1951
2674
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1952
2675
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1953
2676
1954
2677
if use_dbus:
1955
class MandosDBusService(dbus.service.Object):
2678
@alternate_dbus_interfaces({"se.recompile.Mandos":
2679
"se.bsnet.fukt.Mandos"})
2680
class MandosDBusService(DBusObjectWithProperties):
1956
2681
"""A D-Bus proxy object"""
1957
2682
def __init__(self):
1958
2683
dbus.service.Object.__init__(self, bus, "/")
1959
_interface = "se.bsnet.fukt.Mandos"
2684
_interface = "se.recompile.Mandos"
2685
2686
@dbus_interface_annotations(_interface)
2687
def _foo(self):
2688
return { "org.freedesktop.DBus.Property"
2689
".EmitsChangedSignal":
2690
"false"}
1960
2691
1961
2692
@dbus.service.signal(_interface, signature="o")
1962
2693
def ClientAdded(self, objpath):
1977
2708
def GetAllClients(self):
1978
2709
"D-Bus method"
1979
2710
return dbus.Array(c.dbus_object_path
1980
for c in tcp_server.clients)
2711
for c in
2712
tcp_server.clients.itervalues())
1981
2713
1982
2714
@dbus.service.method(_interface,
1983
2715
out_signature="a{oa{sv}}")
1985
2717
"D-Bus method"
1986
2718
return dbus.Dictionary(
1987
2719
((c.dbus_object_path, c.GetAll(""))
1988
for c in tcp_server.clients),
2720
for c in tcp_server.clients.itervalues()),
1989
2721
signature="oa{sv}")
1990
2722
1991
2723
@dbus.service.method(_interface, in_signature="o")
1992
2724
def RemoveClient(self, object_path):
1993
2725
"D-Bus method"
1994
for c in tcp_server.clients:
2726
for c in tcp_server.clients.itervalues():
1995
2727
if c.dbus_object_path == object_path:
1996
tcp_server.clients.remove(c)
2728
del tcp_server.clients[c.name]
1997
2729
c.remove_from_connection()
1998
2730
# Don't signal anything except ClientRemoved
1999
2731
c.disable(quiet=True)
2010
2742
"Cleanup function; run on exit"
2011
2743
service.cleanup()
2012
2744
2745
multiprocessing.active_children()
2746
wnull.close()
2747
if not (tcp_server.clients or client_settings):
2748
return
2749
2750
# Store client before exiting. Secrets are encrypted with key
2751
# based on what config file has. If config file is
2752
# removed/edited, old secret will thus be unrecovable.
2753
clients = {}
2754
with PGPEngine() as pgp:
2755
for client in tcp_server.clients.itervalues():
2756
key = client_settings[client.name]["secret"]
2757
client.encrypted_secret = pgp.encrypt(client.secret,
2758
key)
2759
client_dict = {}
2760
2761
# A list of attributes that can not be pickled
2762
# + secret.
2763
exclude = set(("bus", "changedstate", "secret",
2764
"checker", "server_settings"))
2765
for name, typ in (inspect.getmembers
2766
(dbus.service.Object)):
2767
exclude.add(name)
2768
2769
client_dict["encrypted_secret"] = (client
2770
.encrypted_secret)
2771
for attr in client.client_structure:
2772
if attr not in exclude:
2773
client_dict[attr] = getattr(client, attr)
2774
2775
clients[client.name] = client_dict
2776
del client_settings[client.name]["secret"]
2777
2778
try:
2779
with (tempfile.NamedTemporaryFile
2780
(mode='wb', suffix=".pickle", prefix='clients-',
2781
dir=os.path.dirname(stored_state_path),
2782
delete=False)) as stored_state:
2783
pickle.dump((clients, client_settings), stored_state)
2784
tempname=stored_state.name
2785
os.rename(tempname, stored_state_path)
2786
except (IOError, OSError) as e:
2787
if not debug:
2788
try:
2789
os.remove(tempname)
2790
except NameError:
2791
pass
2792
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
2793
logger.warning("Could not save persistent state: {0}"
2794
.format(os.strerror(e.errno)))
2795
else:
2796
logger.warning("Could not save persistent state:",
2797
exc_info=e)
2798
raise
2799
2800
# Delete all clients, and settings from config
2013
2801
while tcp_server.clients:
2014
client = tcp_server.clients.pop()
2802
name, client = tcp_server.clients.popitem()
2015
2803
if use_dbus:
2016
2804
client.remove_from_connection()
2017
client.disable_hook = None
2018
2805
# Don't signal anything except ClientRemoved
2019
2806
client.disable(quiet=True)
2020
2807
if use_dbus:
2021
2808
# Emit D-Bus signal
2022
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
2809
mandos_dbus_service.ClientRemoved(client
2810
.dbus_object_path,
2023
2811
client.name)
2812
client_settings.clear()
2024
2813
2025
2814
atexit.register(cleanup)
2026
2815
2027
for client in tcp_server.clients:
2816
for client in tcp_server.clients.itervalues():
2028
2817
if use_dbus:
2029
2818
# Emit D-Bus signal
2030
2819
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2031
client.enable()
2820
# Need to initiate checking of clients
2821
if client.enabled:
2822
client.init_checker()
2032
2823
2033
2824
tcp_server.enable()
2034
2825
tcp_server.server_activate()
2037
2828
service.port = tcp_server.socket.getsockname()[1]
2038
2829
if use_ipv6:
2039
2830
logger.info("Now listening on address %r, port %d,"
2040
" flowinfo %d, scope_id %d"
2041
% tcp_server.socket.getsockname())
2831
" flowinfo %d, scope_id %d",
2832
*tcp_server.socket.getsockname())
2042
2833
else: # IPv4
2043
logger.info("Now listening on address %r, port %d"
2044
% tcp_server.socket.getsockname())
2834
logger.info("Now listening on address %r, port %d",
2835
*tcp_server.socket.getsockname())
2045
2836
2046
2837
#service.interface = tcp_server.socket.getsockname()[3]
2047
2838
2050
2841
try:
2051
2842
service.activate()
2052
2843
except dbus.exceptions.DBusException as error:
2053
logger.critical("DBusException: %s", error)
2844
logger.critical("D-Bus Exception", exc_info=error)
2054
2845
cleanup()
2055
2846
sys.exit(1)
2056
2847
# End of Avahi example code
2063
2854
logger.debug("Starting main loop")
2064
2855
main_loop.run()
2065
2856
except AvahiError as error:
2066
logger.critical("AvahiError: %s", error)
2857
logger.critical("Avahi Error", exc_info=error)
2067
2858
cleanup()
2068
2859
sys.exit(1)
2069
2860
except KeyboardInterrupt:
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0