To get this branch, use:
bzr branch
http://bzr.recompile.se/loggerhead/mandos/release
« back to all changes in this revision
Viewing changes to mandos
- browse files at revision 237.14.3
- compare with another revision
- download diff
- download tarball
- view history from revision 237.14.3
- Committer: Teddy Hogeborn
- Date: 2011-11-26 23:08:17 UTC
- mto: (237.12.8 mandos-persistent)
- mto: This revision was merged to the branch mainline in revision 290.
- Revision ID: teddy@recompile.se-20111126230817-tv08v831s2yltbkd
Make "enabled" a client config option.
* DBUS-API: Fix wording on "Expires" option.
* clients.conf (enabled): New.
* mandos (Client): "last_enabled" can now be None.
(Client.__init__): Get "enabled" from config. Only set
"last_enabled" and "expires" if enabled.
(ClientDBus.Created_dbus_property): Removed redundant dbus.String().
(ClientDBus.Interval_dbus_property): If changed, only reschedule
checker if enabled.
(main/special_settings): Added "enabled".
* mandos-clients.conf (OPTIONS): Added "enabled".
* DBUS-API: Fix wording on "Expires" option.
* clients.conf (enabled): New.
* mandos (Client): "last_enabled" can now be None.
(Client.__init__): Get "enabled" from config. Only set
"last_enabled" and "expires" if enabled.
(ClientDBus.Created_dbus_property): Removed redundant dbus.String().
(ClientDBus.Interval_dbus_property): If changed, only reschedule
checker if enabled.
(main/special_settings): Added "enabled".
* mandos-clients.conf (OPTIONS): Added "enabled".
- files added:
- DBUS-API
- debian/source
- files modified:
- .bzrignore
added
removed
mandos
11
11
# "AvahiService" class, and some lines in "main".
12
12
#
13
13
# Everything else is
14
# Copyright © 2008,2009 Teddy Hogeborn
15
# Copyright © 2008,2009 Björn Påhlsson
14
# Copyright © 2008-2011 Teddy Hogeborn
15
# Copyright © 2008-2011 Björn Påhlsson
16
16
#
17
17
# This program is free software: you can redistribute it and/or modify
18
18
# it under the terms of the GNU General Public License as published by
28
28
# along with this program. If not, see
29
29
# <http://www.gnu.org/licenses/>.
30
30
#
31
# Contact the authors at <mandos@fukt.bsnet.se>.
31
# Contact the authors at <mandos@recompile.se>.
32
32
#
33
33
34
from __future__ import division, with_statement, absolute_import
34
from __future__ import (division, absolute_import, print_function,
35
unicode_literals)
35
36
36
37
import SocketServer as socketserver
37
38
import socket
38
import optparse
39
import argparse
39
40
import datetime
40
41
import errno
41
42
import gnutls.crypto
60
61
import fcntl
61
62
import functools
62
63
import cPickle as pickle
64
import multiprocessing
65
import types
66
import binascii
67
import tempfile
63
68
64
69
import dbus
65
70
import dbus.service
70
75
import ctypes.util
71
76
import xml.dom.minidom
72
77
import inspect
78
import GnuPGInterface
73
79
74
80
try:
75
81
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
80
86
SO_BINDTODEVICE = None
81
87
82
88
83
version = "1.0.14"
89
version = "1.4.1"
90
stored_state_file = "clients.pickle"
84
91
85
logger = logging.Logger(u'mandos')
92
logger = logging.getLogger()
86
93
syslogger = (logging.handlers.SysLogHandler
87
94
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
88
address = "/dev/log"))
89
syslogger.setFormatter(logging.Formatter
90
(u'Mandos [%(process)d]: %(levelname)s:'
91
u' %(message)s'))
92
logger.addHandler(syslogger)
93
94
console = logging.StreamHandler()
95
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
96
u' %(levelname)s:'
97
u' %(message)s'))
98
logger.addHandler(console)
95
address = str("/dev/log")))
96
97
try:
98
if_nametoindex = (ctypes.cdll.LoadLibrary
99
(ctypes.util.find_library("c"))
100
.if_nametoindex)
101
except (OSError, AttributeError):
102
def if_nametoindex(interface):
103
"Get an interface index the hard way, i.e. using fcntl()"
104
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
105
with contextlib.closing(socket.socket()) as s:
106
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
107
struct.pack(str("16s16x"),
108
interface))
109
interface_index = struct.unpack(str("I"),
110
ifreq[16:20])[0]
111
return interface_index
112
113
114
def initlogger(level=logging.WARNING):
115
"""init logger and add loglevel"""
116
117
syslogger.setFormatter(logging.Formatter
118
('Mandos [%(process)d]: %(levelname)s:'
119
' %(message)s'))
120
logger.addHandler(syslogger)
121
122
console = logging.StreamHandler()
123
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
124
' [%(process)d]:'
125
' %(levelname)s:'
126
' %(message)s'))
127
logger.addHandler(console)
128
logger.setLevel(level)
129
130
131
class CryptoError(Exception):
132
pass
133
134
135
class Crypto(object):
136
"""A simple class for OpenPGP symmetric encryption & decryption"""
137
def __init__(self):
138
self.gnupg = GnuPGInterface.GnuPG()
139
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
140
self.gnupg = GnuPGInterface.GnuPG()
141
self.gnupg.options.meta_interactive = False
142
self.gnupg.options.homedir = self.tempdir
143
self.gnupg.options.extra_args.extend(['--force-mdc',
144
'--quiet'])
145
146
def __enter__(self):
147
return self
148
149
def __exit__ (self, exc_type, exc_value, traceback):
150
self._cleanup()
151
return False
152
153
def __del__(self):
154
self._cleanup()
155
156
def _cleanup(self):
157
if self.tempdir is not None:
158
# Delete contents of tempdir
159
for root, dirs, files in os.walk(self.tempdir,
160
topdown = False):
161
for filename in files:
162
os.remove(os.path.join(root, filename))
163
for dirname in dirs:
164
os.rmdir(os.path.join(root, dirname))
165
# Remove tempdir
166
os.rmdir(self.tempdir)
167
self.tempdir = None
168
169
def password_encode(self, password):
170
# Passphrase can not be empty and can not contain newlines or
171
# NUL bytes. So we prefix it and hex encode it.
172
return b"mandos" + binascii.hexlify(password)
173
174
def encrypt(self, data, password):
175
self.gnupg.passphrase = self.password_encode(password)
176
with open(os.devnull) as devnull:
177
try:
178
proc = self.gnupg.run(['--symmetric'],
179
create_fhs=['stdin', 'stdout'],
180
attach_fhs={'stderr': devnull})
181
with contextlib.closing(proc.handles['stdin']) as f:
182
f.write(data)
183
with contextlib.closing(proc.handles['stdout']) as f:
184
ciphertext = f.read()
185
proc.wait()
186
except IOError as e:
187
raise CryptoError(e)
188
self.gnupg.passphrase = None
189
return ciphertext
190
191
def decrypt(self, data, password):
192
self.gnupg.passphrase = self.password_encode(password)
193
with open(os.devnull) as devnull:
194
try:
195
proc = self.gnupg.run(['--decrypt'],
196
create_fhs=['stdin', 'stdout'],
197
attach_fhs={'stderr': devnull})
198
with contextlib.closing(proc.handles['stdin'] ) as f:
199
f.write(data)
200
with contextlib.closing(proc.handles['stdout']) as f:
201
decrypted_plaintext = f.read()
202
proc.wait()
203
except IOError as e:
204
raise CryptoError(e)
205
self.gnupg.passphrase = None
206
return decrypted_plaintext
207
208
99
209
100
210
class AvahiError(Exception):
101
211
def __init__(self, value, *args, **kwargs):
117
227
Attributes:
118
228
interface: integer; avahi.IF_UNSPEC or an interface index.
119
229
Used to optionally bind to the specified interface.
120
name: string; Example: u'Mandos'
121
type: string; Example: u'_mandos._tcp'.
230
name: string; Example: 'Mandos'
231
type: string; Example: '_mandos._tcp'.
122
232
See <http://www.dns-sd.org/ServiceTypes.html>
123
233
port: integer; what port to announce
124
234
TXT: list of strings; TXT record for the service
133
243
"""
134
244
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
135
245
servicetype = None, port = None, TXT = None,
136
domain = u"", host = u"", max_renames = 32768,
246
domain = "", host = "", max_renames = 32768,
137
247
protocol = avahi.PROTO_UNSPEC, bus = None):
138
248
self.interface = interface
139
249
self.name = name
148
258
self.group = None # our entry group
149
259
self.server = None
150
260
self.bus = bus
261
self.entry_group_state_changed_match = None
151
262
def rename(self):
152
263
"""Derived from the Avahi example code"""
153
264
if self.rename_count >= self.max_renames:
154
logger.critical(u"No suitable Zeroconf service name found"
155
u" after %i retries, exiting.",
265
logger.critical("No suitable Zeroconf service name found"
266
" after %i retries, exiting.",
156
267
self.rename_count)
157
raise AvahiServiceError(u"Too many renames")
158
self.name = self.server.GetAlternativeServiceName(self.name)
159
logger.info(u"Changing Zeroconf service name to %r ...",
160
unicode(self.name))
161
syslogger.setFormatter(logging.Formatter
162
(u'Mandos (%s) [%%(process)d]:'
163
u' %%(levelname)s: %%(message)s'
164
% self.name))
268
raise AvahiServiceError("Too many renames")
269
self.name = unicode(self.server
270
.GetAlternativeServiceName(self.name))
271
logger.info("Changing Zeroconf service name to %r ...",
272
self.name)
165
273
self.remove()
166
self.add()
274
try:
275
self.add()
276
except dbus.exceptions.DBusException as error:
277
logger.critical("DBusException: %s", error)
278
self.cleanup()
279
os._exit(1)
167
280
self.rename_count += 1
168
281
def remove(self):
169
282
"""Derived from the Avahi example code"""
283
if self.entry_group_state_changed_match is not None:
284
self.entry_group_state_changed_match.remove()
285
self.entry_group_state_changed_match = None
170
286
if self.group is not None:
171
287
self.group.Reset()
172
288
def add(self):
173
289
"""Derived from the Avahi example code"""
290
self.remove()
174
291
if self.group is None:
175
292
self.group = dbus.Interface(
176
293
self.bus.get_object(avahi.DBUS_NAME,
177
294
self.server.EntryGroupNew()),
178
295
avahi.DBUS_INTERFACE_ENTRY_GROUP)
179
self.group.connect_to_signal('StateChanged',
180
self
181
.entry_group_state_changed)
182
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
296
self.entry_group_state_changed_match = (
297
self.group.connect_to_signal(
298
'StateChanged', self.entry_group_state_changed))
299
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
183
300
self.name, self.type)
184
301
self.group.AddService(
185
302
self.interface,
192
309
self.group.Commit()
193
310
def entry_group_state_changed(self, state, error):
194
311
"""Derived from the Avahi example code"""
195
logger.debug(u"Avahi state change: %i", state)
312
logger.debug("Avahi entry group state change: %i", state)
196
313
197
314
if state == avahi.ENTRY_GROUP_ESTABLISHED:
198
logger.debug(u"Zeroconf service established.")
315
logger.debug("Zeroconf service established.")
199
316
elif state == avahi.ENTRY_GROUP_COLLISION:
200
logger.warning(u"Zeroconf service name collision.")
317
logger.info("Zeroconf service name collision.")
201
318
self.rename()
202
319
elif state == avahi.ENTRY_GROUP_FAILURE:
203
logger.critical(u"Avahi: Error in group state changed %s",
320
logger.critical("Avahi: Error in group state changed %s",
204
321
unicode(error))
205
raise AvahiGroupError(u"State changed: %s"
322
raise AvahiGroupError("State changed: %s"
206
323
% unicode(error))
207
324
def cleanup(self):
208
325
"""Derived from the Avahi example code"""
209
326
if self.group is not None:
210
self.group.Free()
327
try:
328
self.group.Free()
329
except (dbus.exceptions.UnknownMethodException,
330
dbus.exceptions.DBusException):
331
pass
211
332
self.group = None
212
def server_state_changed(self, state):
333
self.remove()
334
def server_state_changed(self, state, error=None):
213
335
"""Derived from the Avahi example code"""
214
if state == avahi.SERVER_COLLISION:
215
logger.error(u"Zeroconf server name collision")
216
self.remove()
336
logger.debug("Avahi server state change: %i", state)
337
bad_states = { avahi.SERVER_INVALID:
338
"Zeroconf server invalid",
339
avahi.SERVER_REGISTERING: None,
340
avahi.SERVER_COLLISION:
341
"Zeroconf server name collision",
342
avahi.SERVER_FAILURE:
343
"Zeroconf server failure" }
344
if state in bad_states:
345
if bad_states[state] is not None:
346
if error is None:
347
logger.error(bad_states[state])
348
else:
349
logger.error(bad_states[state] + ": %r", error)
350
self.cleanup()
217
351
elif state == avahi.SERVER_RUNNING:
218
352
self.add()
353
else:
354
if error is None:
355
logger.debug("Unknown state: %r", state)
356
else:
357
logger.debug("Unknown state: %r: %r", state, error)
219
358
def activate(self):
220
359
"""Derived from the Avahi example code"""
221
360
if self.server is None:
222
361
self.server = dbus.Interface(
223
362
self.bus.get_object(avahi.DBUS_NAME,
224
avahi.DBUS_PATH_SERVER),
363
avahi.DBUS_PATH_SERVER,
364
follow_name_owner_changes=True),
225
365
avahi.DBUS_INTERFACE_SERVER)
226
self.server.connect_to_signal(u"StateChanged",
366
self.server.connect_to_signal("StateChanged",
227
367
self.server_state_changed)
228
368
self.server_state_changed(self.server.GetState())
229
369
370
class AvahiServiceToSyslog(AvahiService):
371
def rename(self):
372
"""Add the new name to the syslog messages"""
373
ret = AvahiService.rename(self)
374
syslogger.setFormatter(logging.Formatter
375
('Mandos (%s) [%%(process)d]:'
376
' %%(levelname)s: %%(message)s'
377
% self.name))
378
return ret
230
379
380
def _timedelta_to_milliseconds(td):
381
"Convert a datetime.timedelta() to milliseconds"
382
return ((td.days * 24 * 60 * 60 * 1000)
383
+ (td.seconds * 1000)
384
+ (td.microseconds // 1000))
385
231
386
class Client(object):
232
387
"""A representation of a client host served by this server.
233
388
234
389
Attributes:
235
name: string; from the config file, used in log messages and
236
D-Bus identifiers
390
_approved: bool(); 'None' if not yet approved/disapproved
391
approval_delay: datetime.timedelta(); Time to wait for approval
392
approval_duration: datetime.timedelta(); Duration of one approval
393
checker: subprocess.Popen(); a running checker process used
394
to see if the client lives.
395
'None' if no process is running.
396
checker_callback_tag: a gobject event source tag, or None
397
checker_command: string; External command which is run to check
398
if client lives. %() expansions are done at
399
runtime with vars(self) as dict, so that for
400
instance %(name)s can be used in the command.
401
checker_initiator_tag: a gobject event source tag, or None
402
created: datetime.datetime(); (UTC) object creation
403
client_structure: Object describing what attributes a client has
404
and is used for storing the client at exit
405
current_checker_command: string; current running checker_command
406
disable_initiator_tag: a gobject event source tag, or None
407
enabled: bool()
237
408
fingerprint: string (40 or 32 hexadecimal digits); used to
238
409
uniquely identify the client
239
secret: bytestring; sent verbatim (over TLS) to client
240
410
host: string; available for use by the checker command
241
created: datetime.datetime(); (UTC) object creation
242
last_enabled: datetime.datetime(); (UTC)
243
enabled: bool()
411
interval: datetime.timedelta(); How often to start a new checker
412
last_approval_request: datetime.datetime(); (UTC) or None
244
413
last_checked_ok: datetime.datetime(); (UTC) or None
414
415
last_checker_status: integer between 0 and 255 reflecting exit
416
status of last checker. -1 reflects crashed
417
checker, or None.
418
last_enabled: datetime.datetime(); (UTC) or None
419
name: string; from the config file, used in log messages and
420
D-Bus identifiers
421
secret: bytestring; sent verbatim (over TLS) to client
245
422
timeout: datetime.timedelta(); How long from last_checked_ok
246
423
until this client is disabled
247
interval: datetime.timedelta(); How often to start a new checker
248
disable_hook: If set, called by disable() as disable_hook(self)
249
checker: subprocess.Popen(); a running checker process used
250
to see if the client lives.
251
'None' if no process is running.
252
checker_initiator_tag: a gobject event source tag, or None
253
disable_initiator_tag: - '' -
254
checker_callback_tag: - '' -
255
checker_command: string; External command which is run to check if
256
client lives. %() expansions are done at
257
runtime with vars(self) as dict, so that for
258
instance %(name)s can be used in the command.
259
current_checker_command: string; current running checker_command
424
extended_timeout: extra long timeout when password has been sent
425
runtime_expansions: Allowed attributes for runtime expansion.
426
expires: datetime.datetime(); time (UTC) when a client will be
427
disabled, or None
260
428
"""
261
429
262
@staticmethod
263
def _timedelta_to_milliseconds(td):
264
"Convert a datetime.timedelta() to milliseconds"
265
return ((td.days * 24 * 60 * 60 * 1000)
266
+ (td.seconds * 1000)
267
+ (td.microseconds // 1000))
430
runtime_expansions = ("approval_delay", "approval_duration",
431
"created", "enabled", "fingerprint",
432
"host", "interval", "last_checked_ok",
433
"last_enabled", "name", "timeout")
268
434
269
435
def timeout_milliseconds(self):
270
436
"Return the 'timeout' attribute in milliseconds"
271
return self._timedelta_to_milliseconds(self.timeout)
437
return _timedelta_to_milliseconds(self.timeout)
438
439
def extended_timeout_milliseconds(self):
440
"Return the 'extended_timeout' attribute in milliseconds"
441
return _timedelta_to_milliseconds(self.extended_timeout)
272
442
273
443
def interval_milliseconds(self):
274
444
"Return the 'interval' attribute in milliseconds"
275
return self._timedelta_to_milliseconds(self.interval)
276
277
def __init__(self, name = None, disable_hook=None, config=None):
445
return _timedelta_to_milliseconds(self.interval)
446
447
def approval_delay_milliseconds(self):
448
return _timedelta_to_milliseconds(self.approval_delay)
449
450
def __init__(self, name = None, config=None):
278
451
"""Note: the 'checker' key in 'config' sets the
279
452
'checker_command' attribute and *not* the 'checker'
280
453
attribute."""
281
454
self.name = name
282
455
if config is None:
283
456
config = {}
284
logger.debug(u"Creating client %r", self.name)
457
logger.debug("Creating client %r", self.name)
285
458
# Uppercase and remove spaces from fingerprint for later
286
459
# comparison purposes with return value from the fingerprint()
287
460
# function
288
self.fingerprint = (config[u"fingerprint"].upper()
289
.replace(u" ", u""))
290
logger.debug(u" Fingerprint: %s", self.fingerprint)
291
if u"secret" in config:
292
self.secret = config[u"secret"].decode(u"base64")
293
elif u"secfile" in config:
461
self.fingerprint = (config["fingerprint"].upper()
462
.replace(" ", ""))
463
logger.debug(" Fingerprint: %s", self.fingerprint)
464
if "secret" in config:
465
self.secret = config["secret"].decode("base64")
466
elif "secfile" in config:
294
467
with open(os.path.expanduser(os.path.expandvars
295
(config[u"secfile"])),
468
(config["secfile"])),
296
469
"rb") as secfile:
297
470
self.secret = secfile.read()
298
471
else:
299
raise TypeError(u"No secret or secfile for client %s"
472
raise TypeError("No secret or secfile for client %s"
300
473
% self.name)
301
self.host = config.get(u"host", u"")
474
self.host = config.get("host", "")
302
475
self.created = datetime.datetime.utcnow()
303
self.enabled = False
304
self.last_enabled = None
476
self.enabled = config.get("enabled", True)
477
self.last_approval_request = None
478
if self.enabled:
479
self.last_enabled = datetime.datetime.utcnow()
480
else:
481
self.last_enabled = None
305
482
self.last_checked_ok = None
306
self.timeout = string_to_delta(config[u"timeout"])
307
self.interval = string_to_delta(config[u"interval"])
308
self.disable_hook = disable_hook
483
self.last_checker_status = None
484
self.timeout = string_to_delta(config["timeout"])
485
self.extended_timeout = string_to_delta(config
486
["extended_timeout"])
487
self.interval = string_to_delta(config["interval"])
309
488
self.checker = None
310
489
self.checker_initiator_tag = None
311
490
self.disable_initiator_tag = None
491
if self.enabled:
492
self.expires = datetime.datetime.utcnow() + self.timeout
493
else:
494
self.expires = None
312
495
self.checker_callback_tag = None
313
self.checker_command = config[u"checker"]
496
self.checker_command = config["checker"]
314
497
self.current_checker_command = None
315
self.last_connect = None
498
self._approved = None
499
self.approved_by_default = config.get("approved_by_default",
500
True)
501
self.approvals_pending = 0
502
self.approval_delay = string_to_delta(
503
config["approval_delay"])
504
self.approval_duration = string_to_delta(
505
config["approval_duration"])
506
self.changedstate = (multiprocessing_manager
507
.Condition(multiprocessing_manager
508
.Lock()))
509
self.client_structure = [attr for attr in
510
self.__dict__.iterkeys()
511
if not attr.startswith("_")]
512
self.client_structure.append("client_structure")
513
514
for name, t in inspect.getmembers(type(self),
515
lambda obj:
516
isinstance(obj,
517
property)):
518
if not name.startswith("_"):
519
self.client_structure.append(name)
520
521
# Send notice to process children that client state has changed
522
def send_changedstate(self):
523
with self.changedstate:
524
self.changedstate.notify_all()
316
525
317
526
def enable(self):
318
527
"""Start this client's checker and timeout hooks"""
319
if getattr(self, u"enabled", False):
528
if getattr(self, "enabled", False):
320
529
# Already enabled
321
530
return
531
self.send_changedstate()
532
self.expires = datetime.datetime.utcnow() + self.timeout
533
self.enabled = True
322
534
self.last_enabled = datetime.datetime.utcnow()
535
self.init_checker()
536
537
def disable(self, quiet=True):
538
"""Disable this client."""
539
if not getattr(self, "enabled", False):
540
return False
541
if not quiet:
542
self.send_changedstate()
543
if not quiet:
544
logger.info("Disabling client %s", self.name)
545
if getattr(self, "disable_initiator_tag", False):
546
gobject.source_remove(self.disable_initiator_tag)
547
self.disable_initiator_tag = None
548
self.expires = None
549
if getattr(self, "checker_initiator_tag", False):
550
gobject.source_remove(self.checker_initiator_tag)
551
self.checker_initiator_tag = None
552
self.stop_checker()
553
self.enabled = False
554
# Do not run this again if called by a gobject.timeout_add
555
return False
556
557
def __del__(self):
558
self.disable()
559
560
def init_checker(self):
323
561
# Schedule a new checker to be started an 'interval' from now,
324
562
# and every interval from then on.
325
563
self.checker_initiator_tag = (gobject.timeout_add
329
567
self.disable_initiator_tag = (gobject.timeout_add
330
568
(self.timeout_milliseconds(),
331
569
self.disable))
332
self.enabled = True
333
570
# Also start a new checker *right now*.
334
571
self.start_checker()
335
572
336
def disable(self, quiet=True):
337
"""Disable this client."""
338
if not getattr(self, "enabled", False):
339
return False
340
if not quiet:
341
logger.info(u"Disabling client %s", self.name)
342
if getattr(self, u"disable_initiator_tag", False):
343
gobject.source_remove(self.disable_initiator_tag)
344
self.disable_initiator_tag = None
345
if getattr(self, u"checker_initiator_tag", False):
346
gobject.source_remove(self.checker_initiator_tag)
347
self.checker_initiator_tag = None
348
self.stop_checker()
349
if self.disable_hook:
350
self.disable_hook(self)
351
self.enabled = False
352
# Do not run this again if called by a gobject.timeout_add
353
return False
354
355
def __del__(self):
356
self.disable_hook = None
357
self.disable()
358
359
573
def checker_callback(self, pid, condition, command):
360
574
"""The checker has completed, so take appropriate actions."""
361
575
self.checker_callback_tag = None
362
576
self.checker = None
363
577
if os.WIFEXITED(condition):
364
exitstatus = os.WEXITSTATUS(condition)
365
if exitstatus == 0:
366
logger.info(u"Checker for %(name)s succeeded",
578
self.last_checker_status = os.WEXITSTATUS(condition)
579
if self.last_checker_status == 0:
580
logger.info("Checker for %(name)s succeeded",
367
581
vars(self))
368
582
self.checked_ok()
369
583
else:
370
logger.info(u"Checker for %(name)s failed",
584
logger.info("Checker for %(name)s failed",
371
585
vars(self))
372
586
else:
373
logger.warning(u"Checker for %(name)s crashed?",
587
self.last_checker_status = -1
588
logger.warning("Checker for %(name)s crashed?",
374
589
vars(self))
375
590
376
def checked_ok(self):
591
def checked_ok(self, timeout=None):
377
592
"""Bump up the timeout for this client.
378
593
379
594
This should only be called when the client has been seen,
380
595
alive and well.
381
596
"""
597
if timeout is None:
598
timeout = self.timeout
382
599
self.last_checked_ok = datetime.datetime.utcnow()
383
gobject.source_remove(self.disable_initiator_tag)
384
self.disable_initiator_tag = (gobject.timeout_add
385
(self.timeout_milliseconds(),
386
self.disable))
600
if self.disable_initiator_tag is not None:
601
gobject.source_remove(self.disable_initiator_tag)
602
if getattr(self, "enabled", False):
603
self.disable_initiator_tag = (gobject.timeout_add
604
(_timedelta_to_milliseconds
605
(timeout), self.disable))
606
self.expires = datetime.datetime.utcnow() + timeout
607
608
def need_approval(self):
609
self.last_approval_request = datetime.datetime.utcnow()
387
610
388
611
def start_checker(self):
389
612
"""Start a new checker subprocess if one is not running.
402
625
# If a checker exists, make sure it is not a zombie
403
626
try:
404
627
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
405
except (AttributeError, OSError), error:
628
except (AttributeError, OSError) as error:
406
629
if (isinstance(error, OSError)
407
630
and error.errno != errno.ECHILD):
408
631
raise error
409
632
else:
410
633
if pid:
411
logger.warning(u"Checker was a zombie")
634
logger.warning("Checker was a zombie")
412
635
gobject.source_remove(self.checker_callback_tag)
413
636
self.checker_callback(pid, status,
414
637
self.current_checker_command)
419
642
command = self.checker_command % self.host
420
643
except TypeError:
421
644
# Escape attributes for the shell
422
escaped_attrs = dict((key,
423
re.escape(unicode(str(val),
424
errors=
425
u'replace')))
426
for key, val in
427
vars(self).iteritems())
645
escaped_attrs = dict(
646
(attr,
647
re.escape(unicode(str(getattr(self, attr, "")),
648
errors=
649
'replace')))
650
for attr in
651
self.runtime_expansions)
652
428
653
try:
429
654
command = self.checker_command % escaped_attrs
430
except TypeError, error:
431
logger.error(u'Could not format string "%s":'
432
u' %s', self.checker_command, error)
655
except TypeError as error:
656
logger.error('Could not format string "%s":'
657
' %s', self.checker_command, error)
433
658
return True # Try again later
434
659
self.current_checker_command = command
435
660
try:
436
logger.info(u"Starting checker %r for %s",
661
logger.info("Starting checker %r for %s",
437
662
command, self.name)
438
663
# We don't need to redirect stdout and stderr, since
439
664
# in normal mode, that is already done by daemon(),
441
666
# always replaced by /dev/null.)
442
667
self.checker = subprocess.Popen(command,
443
668
close_fds=True,
444
shell=True, cwd=u"/")
669
shell=True, cwd="/")
445
670
self.checker_callback_tag = (gobject.child_watch_add
446
671
(self.checker.pid,
447
672
self.checker_callback,
452
677
if pid:
453
678
gobject.source_remove(self.checker_callback_tag)
454
679
self.checker_callback(pid, status, command)
455
except OSError, error:
456
logger.error(u"Failed to start subprocess: %s",
680
except OSError as error:
681
logger.error("Failed to start subprocess: %s",
457
682
error)
458
683
# Re-run this periodically if run by gobject.timeout_add
459
684
return True
463
688
if self.checker_callback_tag:
464
689
gobject.source_remove(self.checker_callback_tag)
465
690
self.checker_callback_tag = None
466
if getattr(self, u"checker", None) is None:
691
if getattr(self, "checker", None) is None:
467
692
return
468
logger.debug(u"Stopping checker for %(name)s", vars(self))
693
logger.debug("Stopping checker for %(name)s", vars(self))
469
694
try:
470
695
os.kill(self.checker.pid, signal.SIGTERM)
471
696
#time.sleep(0.5)
472
697
#if self.checker.poll() is None:
473
698
# os.kill(self.checker.pid, signal.SIGKILL)
474
except OSError, error:
699
except OSError as error:
475
700
if error.errno != errno.ESRCH: # No such process
476
701
raise
477
702
self.checker = None
478
703
479
704
480
def dbus_service_property(dbus_interface, signature=u"v",
481
access=u"readwrite", byte_arrays=False):
705
def dbus_service_property(dbus_interface, signature="v",
706
access="readwrite", byte_arrays=False):
482
707
"""Decorators for marking methods of a DBusObjectWithProperties to
483
708
become properties on the D-Bus.
484
709
491
716
"""
492
717
# Encoding deeply encoded byte arrays is not supported yet by the
493
718
# "Set" method, so we fail early here:
494
if byte_arrays and signature != u"ay":
495
raise ValueError(u"Byte arrays not supported for non-'ay'"
496
u" signature %r" % signature)
719
if byte_arrays and signature != "ay":
720
raise ValueError("Byte arrays not supported for non-'ay'"
721
" signature %r" % signature)
497
722
def decorator(func):
498
723
func._dbus_is_property = True
499
724
func._dbus_interface = dbus_interface
500
725
func._dbus_signature = signature
501
726
func._dbus_access = access
502
727
func._dbus_name = func.__name__
503
if func._dbus_name.endswith(u"_dbus_property"):
728
if func._dbus_name.endswith("_dbus_property"):
504
729
func._dbus_name = func._dbus_name[:-14]
505
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
730
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
506
731
return func
507
732
return decorator
508
733
528
753
529
754
class DBusObjectWithProperties(dbus.service.Object):
530
755
"""A D-Bus object with properties.
531
756
532
757
Classes inheriting from this can use the dbus_service_property
533
758
decorator to expose methods as D-Bus properties. It exposes the
534
759
standard Get(), Set(), and GetAll() methods on the D-Bus.
536
761
537
762
@staticmethod
538
763
def _is_dbus_property(obj):
539
return getattr(obj, u"_dbus_is_property", False)
764
return getattr(obj, "_dbus_is_property", False)
540
765
541
766
def _get_all_dbus_properties(self):
542
767
"""Returns a generator of (name, attribute) pairs
543
768
"""
544
return ((prop._dbus_name, prop)
769
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
770
for cls in self.__class__.__mro__
545
771
for name, prop in
546
inspect.getmembers(self, self._is_dbus_property))
772
inspect.getmembers(cls, self._is_dbus_property))
547
773
548
774
def _get_dbus_property(self, interface_name, property_name):
549
775
"""Returns a bound method if one exists which is a D-Bus
550
776
property with the specified name and interface.
551
777
"""
552
for name in (property_name,
553
property_name + u"_dbus_property"):
554
prop = getattr(self, name, None)
555
if (prop is None
556
or not self._is_dbus_property(prop)
557
or prop._dbus_name != property_name
558
or (interface_name and prop._dbus_interface
559
and interface_name != prop._dbus_interface)):
560
continue
561
return prop
778
for cls in self.__class__.__mro__:
779
for name, value in (inspect.getmembers
780
(cls, self._is_dbus_property)):
781
if (value._dbus_name == property_name
782
and value._dbus_interface == interface_name):
783
return value.__get__(self)
784
562
785
# No such property
563
raise DBusPropertyNotFound(self.dbus_object_path + u":"
564
+ interface_name + u"."
786
raise DBusPropertyNotFound(self.dbus_object_path + ":"
787
+ interface_name + "."
565
788
+ property_name)
566
789
567
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
568
out_signature=u"v")
790
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
791
out_signature="v")
569
792
def Get(self, interface_name, property_name):
570
793
"""Standard D-Bus property Get() method, see D-Bus standard.
571
794
"""
572
795
prop = self._get_dbus_property(interface_name, property_name)
573
if prop._dbus_access == u"write":
796
if prop._dbus_access == "write":
574
797
raise DBusPropertyAccessException(property_name)
575
798
value = prop()
576
if not hasattr(value, u"variant_level"):
799
if not hasattr(value, "variant_level"):
577
800
return value
578
801
return type(value)(value, variant_level=value.variant_level+1)
579
802
580
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
803
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
581
804
def Set(self, interface_name, property_name, value):
582
805
"""Standard D-Bus property Set() method, see D-Bus standard.
583
806
"""
584
807
prop = self._get_dbus_property(interface_name, property_name)
585
if prop._dbus_access == u"read":
808
if prop._dbus_access == "read":
586
809
raise DBusPropertyAccessException(property_name)
587
if prop._dbus_get_args_options[u"byte_arrays"]:
810
if prop._dbus_get_args_options["byte_arrays"]:
588
811
# The byte_arrays option is not supported yet on
589
812
# signatures other than "ay".
590
if prop._dbus_signature != u"ay":
813
if prop._dbus_signature != "ay":
591
814
raise ValueError
592
815
value = dbus.ByteArray(''.join(unichr(byte)
593
816
for byte in value))
594
817
prop(value)
595
818
596
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
597
out_signature=u"a{sv}")
819
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
820
out_signature="a{sv}")
598
821
def GetAll(self, interface_name):
599
822
"""Standard D-Bus property GetAll() method, see D-Bus
600
823
standard.
601
824
602
825
Note: Will not include properties with access="write".
603
826
"""
604
all = {}
827
properties = {}
605
828
for name, prop in self._get_all_dbus_properties():
606
829
if (interface_name
607
830
and interface_name != prop._dbus_interface):
608
831
# Interface non-empty but did not match
609
832
continue
610
833
# Ignore write-only properties
611
if prop._dbus_access == u"write":
834
if prop._dbus_access == "write":
612
835
continue
613
836
value = prop()
614
if not hasattr(value, u"variant_level"):
615
all[name] = value
837
if not hasattr(value, "variant_level"):
838
properties[name] = value
616
839
continue
617
all[name] = type(value)(value, variant_level=
618
value.variant_level+1)
619
return dbus.Dictionary(all, signature=u"sv")
840
properties[name] = type(value)(value, variant_level=
841
value.variant_level+1)
842
return dbus.Dictionary(properties, signature="sv")
620
843
621
844
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
622
out_signature=u"s",
845
out_signature="s",
623
846
path_keyword='object_path',
624
847
connection_keyword='connection')
625
848
def Introspect(self, object_path, connection):
630
853
try:
631
854
document = xml.dom.minidom.parseString(xmlstring)
632
855
def make_tag(document, name, prop):
633
e = document.createElement(u"property")
634
e.setAttribute(u"name", name)
635
e.setAttribute(u"type", prop._dbus_signature)
636
e.setAttribute(u"access", prop._dbus_access)
856
e = document.createElement("property")
857
e.setAttribute("name", name)
858
e.setAttribute("type", prop._dbus_signature)
859
e.setAttribute("access", prop._dbus_access)
637
860
return e
638
for if_tag in document.getElementsByTagName(u"interface"):
861
for if_tag in document.getElementsByTagName("interface"):
639
862
for tag in (make_tag(document, name, prop)
640
863
for name, prop
641
864
in self._get_all_dbus_properties()
642
865
if prop._dbus_interface
643
== if_tag.getAttribute(u"name")):
866
== if_tag.getAttribute("name")):
644
867
if_tag.appendChild(tag)
645
868
# Add the names to the return values for the
646
869
# "org.freedesktop.DBus.Properties" methods
647
if (if_tag.getAttribute(u"name")
648
== u"org.freedesktop.DBus.Properties"):
649
for cn in if_tag.getElementsByTagName(u"method"):
650
if cn.getAttribute(u"name") == u"Get":
651
for arg in cn.getElementsByTagName(u"arg"):
652
if (arg.getAttribute(u"direction")
653
== u"out"):
654
arg.setAttribute(u"name", u"value")
655
elif cn.getAttribute(u"name") == u"GetAll":
656
for arg in cn.getElementsByTagName(u"arg"):
657
if (arg.getAttribute(u"direction")
658
== u"out"):
659
arg.setAttribute(u"name", u"props")
660
xmlstring = document.toxml(u"utf-8")
870
if (if_tag.getAttribute("name")
871
== "org.freedesktop.DBus.Properties"):
872
for cn in if_tag.getElementsByTagName("method"):
873
if cn.getAttribute("name") == "Get":
874
for arg in cn.getElementsByTagName("arg"):
875
if (arg.getAttribute("direction")
876
== "out"):
877
arg.setAttribute("name", "value")
878
elif cn.getAttribute("name") == "GetAll":
879
for arg in cn.getElementsByTagName("arg"):
880
if (arg.getAttribute("direction")
881
== "out"):
882
arg.setAttribute("name", "props")
883
xmlstring = document.toxml("utf-8")
661
884
document.unlink()
662
885
except (AttributeError, xml.dom.DOMException,
663
xml.parsers.expat.ExpatError), error:
664
logger.error(u"Failed to override Introspection method",
886
xml.parsers.expat.ExpatError) as error:
887
logger.error("Failed to override Introspection method",
665
888
error)
666
889
return xmlstring
667
890
668
891
892
def datetime_to_dbus (dt, variant_level=0):
893
"""Convert a UTC datetime.datetime() to a D-Bus type."""
894
if dt is None:
895
return dbus.String("", variant_level = variant_level)
896
return dbus.String(dt.isoformat(),
897
variant_level=variant_level)
898
899
900
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
901
.__metaclass__):
902
"""Applied to an empty subclass of a D-Bus object, this metaclass
903
will add additional D-Bus attributes matching a certain pattern.
904
"""
905
def __new__(mcs, name, bases, attr):
906
# Go through all the base classes which could have D-Bus
907
# methods, signals, or properties in them
908
for base in (b for b in bases
909
if issubclass(b, dbus.service.Object)):
910
# Go though all attributes of the base class
911
for attrname, attribute in inspect.getmembers(base):
912
# Ignore non-D-Bus attributes, and D-Bus attributes
913
# with the wrong interface name
914
if (not hasattr(attribute, "_dbus_interface")
915
or not attribute._dbus_interface
916
.startswith("se.recompile.Mandos")):
917
continue
918
# Create an alternate D-Bus interface name based on
919
# the current name
920
alt_interface = (attribute._dbus_interface
921
.replace("se.recompile.Mandos",
922
"se.bsnet.fukt.Mandos"))
923
# Is this a D-Bus signal?
924
if getattr(attribute, "_dbus_is_signal", False):
925
# Extract the original non-method function by
926
# black magic
927
nonmethod_func = (dict(
928
zip(attribute.func_code.co_freevars,
929
attribute.__closure__))["func"]
930
.cell_contents)
931
# Create a new, but exactly alike, function
932
# object, and decorate it to be a new D-Bus signal
933
# with the alternate D-Bus interface name
934
new_function = (dbus.service.signal
935
(alt_interface,
936
attribute._dbus_signature)
937
(types.FunctionType(
938
nonmethod_func.func_code,
939
nonmethod_func.func_globals,
940
nonmethod_func.func_name,
941
nonmethod_func.func_defaults,
942
nonmethod_func.func_closure)))
943
# Define a creator of a function to call both the
944
# old and new functions, so both the old and new
945
# signals gets sent when the function is called
946
def fixscope(func1, func2):
947
"""This function is a scope container to pass
948
func1 and func2 to the "call_both" function
949
outside of its arguments"""
950
def call_both(*args, **kwargs):
951
"""This function will emit two D-Bus
952
signals by calling func1 and func2"""
953
func1(*args, **kwargs)
954
func2(*args, **kwargs)
955
return call_both
956
# Create the "call_both" function and add it to
957
# the class
958
attr[attrname] = fixscope(attribute,
959
new_function)
960
# Is this a D-Bus method?
961
elif getattr(attribute, "_dbus_is_method", False):
962
# Create a new, but exactly alike, function
963
# object. Decorate it to be a new D-Bus method
964
# with the alternate D-Bus interface name. Add it
965
# to the class.
966
attr[attrname] = (dbus.service.method
967
(alt_interface,
968
attribute._dbus_in_signature,
969
attribute._dbus_out_signature)
970
(types.FunctionType
971
(attribute.func_code,
972
attribute.func_globals,
973
attribute.func_name,
974
attribute.func_defaults,
975
attribute.func_closure)))
976
# Is this a D-Bus property?
977
elif getattr(attribute, "_dbus_is_property", False):
978
# Create a new, but exactly alike, function
979
# object, and decorate it to be a new D-Bus
980
# property with the alternate D-Bus interface
981
# name. Add it to the class.
982
attr[attrname] = (dbus_service_property
983
(alt_interface,
984
attribute._dbus_signature,
985
attribute._dbus_access,
986
attribute
987
._dbus_get_args_options
988
["byte_arrays"])
989
(types.FunctionType
990
(attribute.func_code,
991
attribute.func_globals,
992
attribute.func_name,
993
attribute.func_defaults,
994
attribute.func_closure)))
995
return type.__new__(mcs, name, bases, attr)
996
997
669
998
class ClientDBus(Client, DBusObjectWithProperties):
670
999
"""A Client class using D-Bus
671
1000
673
1002
dbus_object_path: dbus.ObjectPath
674
1003
bus: dbus.SystemBus()
675
1004
"""
1005
1006
runtime_expansions = (Client.runtime_expansions
1007
+ ("dbus_object_path",))
1008
676
1009
# dbus.service.Object doesn't use super(), so we can't either.
677
1010
678
1011
def __init__(self, bus = None, *args, **kwargs):
679
1012
self.bus = bus
680
1013
Client.__init__(self, *args, **kwargs)
1014
1015
self._approvals_pending = 0
681
1016
# Only now, when this client is initialized, can it show up on
682
1017
# the D-Bus
1018
client_object_name = unicode(self.name).translate(
1019
{ord("."): ord("_"),
1020
ord("-"): ord("_")})
683
1021
self.dbus_object_path = (dbus.ObjectPath
684
(u"/clients/"
685
+ self.name.replace(u".", u"_")))
1022
("/clients/" + client_object_name))
686
1023
DBusObjectWithProperties.__init__(self, self.bus,
687
1024
self.dbus_object_path)
688
689
@staticmethod
690
def _datetime_to_dbus(dt, variant_level=0):
691
"""Convert a UTC datetime.datetime() to a D-Bus type."""
692
return dbus.String(dt.isoformat(),
693
variant_level=variant_level)
694
695
def enable(self):
696
oldstate = getattr(self, u"enabled", False)
697
r = Client.enable(self)
698
if oldstate != self.enabled:
699
# Emit D-Bus signals
700
self.PropertyChanged(dbus.String(u"enabled"),
701
dbus.Boolean(True, variant_level=1))
702
self.PropertyChanged(
703
dbus.String(u"last_enabled"),
704
self._datetime_to_dbus(self.last_enabled,
705
variant_level=1))
706
return r
707
708
def disable(self, quiet = False):
709
oldstate = getattr(self, u"enabled", False)
710
r = Client.disable(self, quiet=quiet)
711
if not quiet and oldstate != self.enabled:
712
# Emit D-Bus signal
713
self.PropertyChanged(dbus.String(u"enabled"),
714
dbus.Boolean(False, variant_level=1))
715
return r
1025
1026
def notifychangeproperty(transform_func,
1027
dbus_name, type_func=lambda x: x,
1028
variant_level=1):
1029
""" Modify a variable so that it's a property which announces
1030
its changes to DBus.
1031
1032
transform_fun: Function that takes a value and a variant_level
1033
and transforms it to a D-Bus type.
1034
dbus_name: D-Bus name of the variable
1035
type_func: Function that transform the value before sending it
1036
to the D-Bus. Default: no transform
1037
variant_level: D-Bus variant level. Default: 1
1038
"""
1039
attrname = "_{0}".format(dbus_name)
1040
def setter(self, value):
1041
if hasattr(self, "dbus_object_path"):
1042
if (not hasattr(self, attrname) or
1043
type_func(getattr(self, attrname, None))
1044
!= type_func(value)):
1045
dbus_value = transform_func(type_func(value),
1046
variant_level
1047
=variant_level)
1048
self.PropertyChanged(dbus.String(dbus_name),
1049
dbus_value)
1050
setattr(self, attrname, value)
1051
1052
return property(lambda self: getattr(self, attrname), setter)
1053
1054
1055
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1056
approvals_pending = notifychangeproperty(dbus.Boolean,
1057
"ApprovalPending",
1058
type_func = bool)
1059
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1060
last_enabled = notifychangeproperty(datetime_to_dbus,
1061
"LastEnabled")
1062
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1063
type_func = lambda checker:
1064
checker is not None)
1065
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1066
"LastCheckedOK")
1067
last_approval_request = notifychangeproperty(
1068
datetime_to_dbus, "LastApprovalRequest")
1069
approved_by_default = notifychangeproperty(dbus.Boolean,
1070
"ApprovedByDefault")
1071
approval_delay = notifychangeproperty(dbus.UInt16,
1072
"ApprovalDelay",
1073
type_func =
1074
_timedelta_to_milliseconds)
1075
approval_duration = notifychangeproperty(
1076
dbus.UInt16, "ApprovalDuration",
1077
type_func = _timedelta_to_milliseconds)
1078
host = notifychangeproperty(dbus.String, "Host")
1079
timeout = notifychangeproperty(dbus.UInt16, "Timeout",
1080
type_func =
1081
_timedelta_to_milliseconds)
1082
extended_timeout = notifychangeproperty(
1083
dbus.UInt16, "ExtendedTimeout",
1084
type_func = _timedelta_to_milliseconds)
1085
interval = notifychangeproperty(dbus.UInt16,
1086
"Interval",
1087
type_func =
1088
_timedelta_to_milliseconds)
1089
checker_command = notifychangeproperty(dbus.String, "Checker")
1090
1091
del notifychangeproperty
716
1092
717
1093
def __del__(self, *args, **kwargs):
718
1094
try:
719
1095
self.remove_from_connection()
720
1096
except LookupError:
721
1097
pass
722
if hasattr(DBusObjectWithProperties, u"__del__"):
1098
if hasattr(DBusObjectWithProperties, "__del__"):
723
1099
DBusObjectWithProperties.__del__(self, *args, **kwargs)
724
1100
Client.__del__(self, *args, **kwargs)
725
1101
727
1103
*args, **kwargs):
728
1104
self.checker_callback_tag = None
729
1105
self.checker = None
730
# Emit D-Bus signal
731
self.PropertyChanged(dbus.String(u"checker_running"),
732
dbus.Boolean(False, variant_level=1))
733
1106
if os.WIFEXITED(condition):
734
1107
exitstatus = os.WEXITSTATUS(condition)
735
1108
# Emit D-Bus signal
745
1118
return Client.checker_callback(self, pid, condition, command,
746
1119
*args, **kwargs)
747
1120
748
def checked_ok(self, *args, **kwargs):
749
r = Client.checked_ok(self, *args, **kwargs)
750
# Emit D-Bus signal
751
self.PropertyChanged(
752
dbus.String(u"last_checked_ok"),
753
(self._datetime_to_dbus(self.last_checked_ok,
754
variant_level=1)))
755
return r
756
757
1121
def start_checker(self, *args, **kwargs):
758
1122
old_checker = self.checker
759
1123
if self.checker is not None:
766
1130
and old_checker_pid != self.checker.pid):
767
1131
# Emit D-Bus signal
768
1132
self.CheckerStarted(self.current_checker_command)
769
self.PropertyChanged(
770
dbus.String(u"checker_running"),
771
dbus.Boolean(True, variant_level=1))
772
return r
773
774
def stop_checker(self, *args, **kwargs):
775
old_checker = getattr(self, u"checker", None)
776
r = Client.stop_checker(self, *args, **kwargs)
777
if (old_checker is not None
778
and getattr(self, u"checker", None) is None):
779
self.PropertyChanged(dbus.String(u"checker_running"),
780
dbus.Boolean(False, variant_level=1))
781
return r
1133
return r
1134
1135
def _reset_approved(self):
1136
self._approved = None
1137
return False
1138
1139
def approve(self, value=True):
1140
self.send_changedstate()
1141
self._approved = value
1142
gobject.timeout_add(_timedelta_to_milliseconds
1143
(self.approval_duration),
1144
self._reset_approved)
1145
782
1146
783
1147
## D-Bus methods, signals & properties
784
_interface = u"se.bsnet.fukt.Mandos.Client"
1148
_interface = "se.recompile.Mandos.Client"
785
1149
786
1150
## Signals
787
1151
788
1152
# CheckerCompleted - signal
789
@dbus.service.signal(_interface, signature=u"nxs")
1153
@dbus.service.signal(_interface, signature="nxs")
790
1154
def CheckerCompleted(self, exitcode, waitstatus, command):
791
1155
"D-Bus signal"
792
1156
pass
793
1157
794
1158
# CheckerStarted - signal
795
@dbus.service.signal(_interface, signature=u"s")
1159
@dbus.service.signal(_interface, signature="s")
796
1160
def CheckerStarted(self, command):
797
1161
"D-Bus signal"
798
1162
pass
799
1163
800
1164
# PropertyChanged - signal
801
@dbus.service.signal(_interface, signature=u"sv")
1165
@dbus.service.signal(_interface, signature="sv")
802
1166
def PropertyChanged(self, property, value):
803
1167
"D-Bus signal"
804
1168
pass
806
1170
# GotSecret - signal
807
1171
@dbus.service.signal(_interface)
808
1172
def GotSecret(self):
809
"D-Bus signal"
1173
"""D-Bus signal
1174
Is sent after a successful transfer of secret from the Mandos
1175
server to mandos-client
1176
"""
810
1177
pass
811
1178
812
1179
# Rejected - signal
813
@dbus.service.signal(_interface)
814
def Rejected(self):
815
"D-Bus signal"
1180
@dbus.service.signal(_interface, signature="s")
1181
def Rejected(self, reason):
1182
"D-Bus signal"
1183
pass
1184
1185
# NeedApproval - signal
1186
@dbus.service.signal(_interface, signature="tb")
1187
def NeedApproval(self, timeout, default):
1188
"D-Bus signal"
1189
return self.need_approval()
1190
1191
# NeRwequest - signal
1192
@dbus.service.signal(_interface, signature="s")
1193
def NewRequest(self, ip):
1194
"""D-Bus signal
1195
Is sent after a client request a password.
1196
"""
816
1197
pass
817
1198
818
1199
## Methods
819
1200
1201
# Approve - method
1202
@dbus.service.method(_interface, in_signature="b")
1203
def Approve(self, value):
1204
self.approve(value)
1205
820
1206
# CheckedOK - method
821
1207
@dbus.service.method(_interface)
822
1208
def CheckedOK(self):
823
return self.checked_ok()
1209
self.checked_ok()
824
1210
825
1211
# Enable - method
826
1212
@dbus.service.method(_interface)
847
1233
848
1234
## Properties
849
1235
850
# name - property
851
@dbus_service_property(_interface, signature=u"s", access=u"read")
852
def name_dbus_property(self):
1236
# ApprovalPending - property
1237
@dbus_service_property(_interface, signature="b", access="read")
1238
def ApprovalPending_dbus_property(self):
1239
return dbus.Boolean(bool(self.approvals_pending))
1240
1241
# ApprovedByDefault - property
1242
@dbus_service_property(_interface, signature="b",
1243
access="readwrite")
1244
def ApprovedByDefault_dbus_property(self, value=None):
1245
if value is None: # get
1246
return dbus.Boolean(self.approved_by_default)
1247
self.approved_by_default = bool(value)
1248
1249
# ApprovalDelay - property
1250
@dbus_service_property(_interface, signature="t",
1251
access="readwrite")
1252
def ApprovalDelay_dbus_property(self, value=None):
1253
if value is None: # get
1254
return dbus.UInt64(self.approval_delay_milliseconds())
1255
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1256
1257
# ApprovalDuration - property
1258
@dbus_service_property(_interface, signature="t",
1259
access="readwrite")
1260
def ApprovalDuration_dbus_property(self, value=None):
1261
if value is None: # get
1262
return dbus.UInt64(_timedelta_to_milliseconds(
1263
self.approval_duration))
1264
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1265
1266
# Name - property
1267
@dbus_service_property(_interface, signature="s", access="read")
1268
def Name_dbus_property(self):
853
1269
return dbus.String(self.name)
854
1270
855
# fingerprint - property
856
@dbus_service_property(_interface, signature=u"s", access=u"read")
857
def fingerprint_dbus_property(self):
1271
# Fingerprint - property
1272
@dbus_service_property(_interface, signature="s", access="read")
1273
def Fingerprint_dbus_property(self):
858
1274
return dbus.String(self.fingerprint)
859
1275
860
# host - property
861
@dbus_service_property(_interface, signature=u"s",
862
access=u"readwrite")
863
def host_dbus_property(self, value=None):
1276
# Host - property
1277
@dbus_service_property(_interface, signature="s",
1278
access="readwrite")
1279
def Host_dbus_property(self, value=None):
864
1280
if value is None: # get
865
1281
return dbus.String(self.host)
866
1282
self.host = value
867
# Emit D-Bus signal
868
self.PropertyChanged(dbus.String(u"host"),
869
dbus.String(value, variant_level=1))
870
871
# created - property
872
@dbus_service_property(_interface, signature=u"s", access=u"read")
873
def created_dbus_property(self):
874
return dbus.String(self._datetime_to_dbus(self.created))
875
876
# last_enabled - property
877
@dbus_service_property(_interface, signature=u"s", access=u"read")
878
def last_enabled_dbus_property(self):
879
if self.last_enabled is None:
880
return dbus.String(u"")
881
return dbus.String(self._datetime_to_dbus(self.last_enabled))
882
883
# enabled - property
884
@dbus_service_property(_interface, signature=u"b",
885
access=u"readwrite")
886
def enabled_dbus_property(self, value=None):
1283
1284
# Created - property
1285
@dbus_service_property(_interface, signature="s", access="read")
1286
def Created_dbus_property(self):
1287
return datetime_to_dbus(self.created)
1288
1289
# LastEnabled - property
1290
@dbus_service_property(_interface, signature="s", access="read")
1291
def LastEnabled_dbus_property(self):
1292
return datetime_to_dbus(self.last_enabled)
1293
1294
# Enabled - property
1295
@dbus_service_property(_interface, signature="b",
1296
access="readwrite")
1297
def Enabled_dbus_property(self, value=None):
887
1298
if value is None: # get
888
1299
return dbus.Boolean(self.enabled)
889
1300
if value:
891
1302
else:
892
1303
self.disable()
893
1304
894
# last_checked_ok - property
895
@dbus_service_property(_interface, signature=u"s",
896
access=u"readwrite")
897
def last_checked_ok_dbus_property(self, value=None):
1305
# LastCheckedOK - property
1306
@dbus_service_property(_interface, signature="s",
1307
access="readwrite")
1308
def LastCheckedOK_dbus_property(self, value=None):
898
1309
if value is not None:
899
1310
self.checked_ok()
900
1311
return
901
if self.last_checked_ok is None:
902
return dbus.String(u"")
903
return dbus.String(self._datetime_to_dbus(self
904
.last_checked_ok))
905
906
# timeout - property
907
@dbus_service_property(_interface, signature=u"t",
908
access=u"readwrite")
909
def timeout_dbus_property(self, value=None):
1312
return datetime_to_dbus(self.last_checked_ok)
1313
1314
# Expires - property
1315
@dbus_service_property(_interface, signature="s", access="read")
1316
def Expires_dbus_property(self):
1317
return datetime_to_dbus(self.expires)
1318
1319
# LastApprovalRequest - property
1320
@dbus_service_property(_interface, signature="s", access="read")
1321
def LastApprovalRequest_dbus_property(self):
1322
return datetime_to_dbus(self.last_approval_request)
1323
1324
# Timeout - property
1325
@dbus_service_property(_interface, signature="t",
1326
access="readwrite")
1327
def Timeout_dbus_property(self, value=None):
910
1328
if value is None: # get
911
1329
return dbus.UInt64(self.timeout_milliseconds())
912
1330
self.timeout = datetime.timedelta(0, 0, 0, value)
913
# Emit D-Bus signal
914
self.PropertyChanged(dbus.String(u"timeout"),
915
dbus.UInt64(value, variant_level=1))
916
if getattr(self, u"disable_initiator_tag", None) is None:
1331
if getattr(self, "disable_initiator_tag", None) is None:
917
1332
return
918
1333
# Reschedule timeout
919
1334
gobject.source_remove(self.disable_initiator_tag)
920
1335
self.disable_initiator_tag = None
921
time_to_die = (self.
922
_timedelta_to_milliseconds((self
923
.last_checked_ok
924
+ self.timeout)
925
- datetime.datetime
926
.utcnow()))
1336
self.expires = None
1337
time_to_die = _timedelta_to_milliseconds((self
1338
.last_checked_ok
1339
+ self.timeout)
1340
- datetime.datetime
1341
.utcnow())
927
1342
if time_to_die <= 0:
928
1343
# The timeout has passed
929
1344
self.disable()
930
1345
else:
1346
self.expires = (datetime.datetime.utcnow()
1347
+ datetime.timedelta(milliseconds =
1348
time_to_die))
931
1349
self.disable_initiator_tag = (gobject.timeout_add
932
1350
(time_to_die, self.disable))
933
1351
934
# interval - property
935
@dbus_service_property(_interface, signature=u"t",
936
access=u"readwrite")
937
def interval_dbus_property(self, value=None):
1352
# ExtendedTimeout - property
1353
@dbus_service_property(_interface, signature="t",
1354
access="readwrite")
1355
def ExtendedTimeout_dbus_property(self, value=None):
1356
if value is None: # get
1357
return dbus.UInt64(self.extended_timeout_milliseconds())
1358
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1359
1360
# Interval - property
1361
@dbus_service_property(_interface, signature="t",
1362
access="readwrite")
1363
def Interval_dbus_property(self, value=None):
938
1364
if value is None: # get
939
1365
return dbus.UInt64(self.interval_milliseconds())
940
1366
self.interval = datetime.timedelta(0, 0, 0, value)
941
# Emit D-Bus signal
942
self.PropertyChanged(dbus.String(u"interval"),
943
dbus.UInt64(value, variant_level=1))
944
if getattr(self, u"checker_initiator_tag", None) is None:
1367
if getattr(self, "checker_initiator_tag", None) is None:
945
1368
return
946
# Reschedule checker run
947
gobject.source_remove(self.checker_initiator_tag)
948
self.checker_initiator_tag = (gobject.timeout_add
949
(value, self.start_checker))
950
self.start_checker() # Start one now, too
951
952
# checker - property
953
@dbus_service_property(_interface, signature=u"s",
954
access=u"readwrite")
955
def checker_dbus_property(self, value=None):
1369
if self.enabled:
1370
# Reschedule checker run
1371
gobject.source_remove(self.checker_initiator_tag)
1372
self.checker_initiator_tag = (gobject.timeout_add
1373
(value, self.start_checker))
1374
self.start_checker() # Start one now, too
1375
1376
# Checker - property
1377
@dbus_service_property(_interface, signature="s",
1378
access="readwrite")
1379
def Checker_dbus_property(self, value=None):
956
1380
if value is None: # get
957
1381
return dbus.String(self.checker_command)
958
1382
self.checker_command = value
959
# Emit D-Bus signal
960
self.PropertyChanged(dbus.String(u"checker"),
961
dbus.String(self.checker_command,
962
variant_level=1))
963
1383
964
# checker_running - property
965
@dbus_service_property(_interface, signature=u"b",
966
access=u"readwrite")
967
def checker_running_dbus_property(self, value=None):
1384
# CheckerRunning - property
1385
@dbus_service_property(_interface, signature="b",
1386
access="readwrite")
1387
def CheckerRunning_dbus_property(self, value=None):
968
1388
if value is None: # get
969
1389
return dbus.Boolean(self.checker is not None)
970
1390
if value:
972
1392
else:
973
1393
self.stop_checker()
974
1394
975
# object_path - property
976
@dbus_service_property(_interface, signature=u"o", access=u"read")
977
def object_path_dbus_property(self):
1395
# ObjectPath - property
1396
@dbus_service_property(_interface, signature="o", access="read")
1397
def ObjectPath_dbus_property(self):
978
1398
return self.dbus_object_path # is already a dbus.ObjectPath
979
1399
980
# secret = property
981
@dbus_service_property(_interface, signature=u"ay",
982
access=u"write", byte_arrays=True)
983
def secret_dbus_property(self, value):
1400
# Secret = property
1401
@dbus_service_property(_interface, signature="ay",
1402
access="write", byte_arrays=True)
1403
def Secret_dbus_property(self, value):
984
1404
self.secret = str(value)
985
1405
986
1406
del _interface
987
1407
988
1408
1409
class ProxyClient(object):
1410
def __init__(self, child_pipe, fpr, address):
1411
self._pipe = child_pipe
1412
self._pipe.send(('init', fpr, address))
1413
if not self._pipe.recv():
1414
raise KeyError()
1415
1416
def __getattribute__(self, name):
1417
if(name == '_pipe'):
1418
return super(ProxyClient, self).__getattribute__(name)
1419
self._pipe.send(('getattr', name))
1420
data = self._pipe.recv()
1421
if data[0] == 'data':
1422
return data[1]
1423
if data[0] == 'function':
1424
def func(*args, **kwargs):
1425
self._pipe.send(('funcall', name, args, kwargs))
1426
return self._pipe.recv()[1]
1427
return func
1428
1429
def __setattr__(self, name, value):
1430
if(name == '_pipe'):
1431
return super(ProxyClient, self).__setattr__(name, value)
1432
self._pipe.send(('setattr', name, value))
1433
1434
1435
class ClientDBusTransitional(ClientDBus):
1436
__metaclass__ = AlternateDBusNamesMetaclass
1437
1438
989
1439
class ClientHandler(socketserver.BaseRequestHandler, object):
990
1440
"""A class to handle client connections.
991
1441
993
1443
Note: This will run in its own forked process."""
994
1444
995
1445
def handle(self):
996
logger.info(u"TCP connection from: %s",
997
unicode(self.client_address))
998
logger.debug(u"IPC Pipe FD: %d",
999
self.server.child_pipe[1].fileno())
1000
# Open IPC pipe to parent process
1001
with contextlib.nested(self.server.child_pipe[1],
1002
self.server.parent_pipe[0]
1003
) as (ipc, ipc_return):
1446
with contextlib.closing(self.server.child_pipe) as child_pipe:
1447
logger.info("TCP connection from: %s",
1448
unicode(self.client_address))
1449
logger.debug("Pipe FD: %d",
1450
self.server.child_pipe.fileno())
1451
1004
1452
session = (gnutls.connection
1005
1453
.ClientSession(self.request,
1006
1454
gnutls.connection
1007
1455
.X509Credentials()))
1008
1456
1009
line = self.request.makefile().readline()
1010
logger.debug(u"Protocol version: %r", line)
1011
try:
1012
if int(line.strip().split()[0]) > 1:
1013
raise RuntimeError
1014
except (ValueError, IndexError, RuntimeError), error:
1015
logger.error(u"Unknown protocol version: %s", error)
1016
return
1017
1018
1457
# Note: gnutls.connection.X509Credentials is really a
1019
1458
# generic GnuTLS certificate credentials object so long as
1020
1459
# no X.509 keys are added to it. Therefore, we can use it
1021
1460
# here despite using OpenPGP certificates.
1022
1461
1023
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1024
# u"+AES-256-CBC", u"+SHA1",
1025
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1026
# u"+DHE-DSS"))
1462
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1463
# "+AES-256-CBC", "+SHA1",
1464
# "+COMP-NULL", "+CTYPE-OPENPGP",
1465
# "+DHE-DSS"))
1027
1466
# Use a fallback default, since this MUST be set.
1028
1467
priority = self.server.gnutls_priority
1029
1468
if priority is None:
1030
priority = u"NORMAL"
1469
priority = "NORMAL"
1031
1470
(gnutls.library.functions
1032
1471
.gnutls_priority_set_direct(session._c_object,
1033
1472
priority, None))
1034
1473
1474
# Start communication using the Mandos protocol
1475
# Get protocol number
1476
line = self.request.makefile().readline()
1477
logger.debug("Protocol version: %r", line)
1478
try:
1479
if int(line.strip().split()[0]) > 1:
1480
raise RuntimeError
1481
except (ValueError, IndexError, RuntimeError) as error:
1482
logger.error("Unknown protocol version: %s", error)
1483
return
1484
1485
# Start GnuTLS connection
1035
1486
try:
1036
1487
session.handshake()
1037
except gnutls.errors.GNUTLSError, error:
1038
logger.warning(u"Handshake failed: %s", error)
1488
except gnutls.errors.GNUTLSError as error:
1489
logger.warning("Handshake failed: %s", error)
1039
1490
# Do not run session.bye() here: the session is not
1040
1491
# established. Just abandon the request.
1041
1492
return
1042
logger.debug(u"Handshake succeeded")
1493
logger.debug("Handshake succeeded")
1494
1495
approval_required = False
1043
1496
try:
1044
1497
try:
1045
1498
fpr = self.fingerprint(self.peer_certificate
1046
1499
(session))
1047
except (TypeError, gnutls.errors.GNUTLSError), error:
1048
logger.warning(u"Bad certificate: %s", error)
1049
return
1050
logger.debug(u"Fingerprint: %s", fpr)
1051
1052
for c in self.server.clients:
1053
if c.fingerprint == fpr:
1054
client = c
1500
except (TypeError,
1501
gnutls.errors.GNUTLSError) as error:
1502
logger.warning("Bad certificate: %s", error)
1503
return
1504
logger.debug("Fingerprint: %s", fpr)
1505
if self.server.use_dbus:
1506
# Emit D-Bus signal
1507
client.NewRequest(str(self.client_address))
1508
1509
try:
1510
client = ProxyClient(child_pipe, fpr,
1511
self.client_address)
1512
except KeyError:
1513
return
1514
1515
if client.approval_delay:
1516
delay = client.approval_delay
1517
client.approvals_pending += 1
1518
approval_required = True
1519
1520
while True:
1521
if not client.enabled:
1522
logger.info("Client %s is disabled",
1523
client.name)
1524
if self.server.use_dbus:
1525
# Emit D-Bus signal
1526
client.Rejected("Disabled")
1527
return
1528
1529
if client._approved or not client.approval_delay:
1530
#We are approved or approval is disabled
1055
1531
break
1056
else:
1057
ipc.write(u"NOTFOUND %s %s\n"
1058
% (fpr, unicode(self.client_address)))
1059
return
1060
# Have to check if client.enabled, since it is
1061
# possible that the client was disabled since the
1062
# GnuTLS session was established.
1063
ipc.write(u"GETATTR enabled %s\n" % fpr)
1064
enabled = pickle.load(ipc_return)
1065
if not enabled:
1066
ipc.write(u"DISABLED %s\n" % client.name)
1067
return
1068
# Send "NEED_APPROVAL" here and hang waiting
1069
# for response? Leave timeout to parent process?
1070
ipc.write(u"SENDING %s\n" % client.name)
1532
elif client._approved is None:
1533
logger.info("Client %s needs approval",
1534
client.name)
1535
if self.server.use_dbus:
1536
# Emit D-Bus signal
1537
client.NeedApproval(
1538
client.approval_delay_milliseconds(),
1539
client.approved_by_default)
1540
else:
1541
logger.warning("Client %s was not approved",
1542
client.name)
1543
if self.server.use_dbus:
1544
# Emit D-Bus signal
1545
client.Rejected("Denied")
1546
return
1547
1548
#wait until timeout or approved
1549
time = datetime.datetime.now()
1550
client.changedstate.acquire()
1551
(client.changedstate.wait
1552
(float(client._timedelta_to_milliseconds(delay)
1553
/ 1000)))
1554
client.changedstate.release()
1555
time2 = datetime.datetime.now()
1556
if (time2 - time) >= delay:
1557
if not client.approved_by_default:
1558
logger.warning("Client %s timed out while"
1559
" waiting for approval",
1560
client.name)
1561
if self.server.use_dbus:
1562
# Emit D-Bus signal
1563
client.Rejected("Approval timed out")
1564
return
1565
else:
1566
break
1567
else:
1568
delay -= time2 - time
1569
1071
1570
sent_size = 0
1072
1571
while sent_size < len(client.secret):
1073
sent = session.send(client.secret[sent_size:])
1074
logger.debug(u"Sent: %d, remaining: %d",
1572
try:
1573
sent = session.send(client.secret[sent_size:])
1574
except gnutls.errors.GNUTLSError as error:
1575
logger.warning("gnutls send failed")
1576
return
1577
logger.debug("Sent: %d, remaining: %d",
1075
1578
sent, len(client.secret)
1076
1579
- (sent_size + sent))
1077
1580
sent_size += sent
1581
1582
logger.info("Sending secret to %s", client.name)
1583
# bump the timeout using extended_timeout
1584
client.checked_ok(client.extended_timeout)
1585
if self.server.use_dbus:
1586
# Emit D-Bus signal
1587
client.GotSecret()
1588
1078
1589
finally:
1079
session.bye()
1590
if approval_required:
1591
client.approvals_pending -= 1
1592
try:
1593
session.bye()
1594
except gnutls.errors.GNUTLSError as error:
1595
logger.warning("GnuTLS bye failed")
1080
1596
1081
1597
@staticmethod
1082
1598
def peer_certificate(session):
1092
1608
.gnutls_certificate_get_peers
1093
1609
(session._c_object, ctypes.byref(list_size)))
1094
1610
if not bool(cert_list) and list_size.value != 0:
1095
raise gnutls.errors.GNUTLSError(u"error getting peer"
1096
u" certificate")
1611
raise gnutls.errors.GNUTLSError("error getting peer"
1612
" certificate")
1097
1613
if list_size.value == 0:
1098
1614
return None
1099
1615
cert = cert_list[0]
1125
1641
if crtverify.value != 0:
1126
1642
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1127
1643
raise (gnutls.errors.CertificateSecurityError
1128
(u"Verify failed"))
1644
("Verify failed"))
1129
1645
# New buffer for the fingerprint
1130
1646
buf = ctypes.create_string_buffer(20)
1131
1647
buf_len = ctypes.c_size_t()
1138
1654
# Convert the buffer to a Python bytestring
1139
1655
fpr = ctypes.string_at(buf, buf_len.value)
1140
1656
# Convert the bytestring to hexadecimal notation
1141
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1657
hex_fpr = binascii.hexlify(fpr).upper()
1142
1658
return hex_fpr
1143
1659
1144
1660
1145
class ForkingMixInWithPipes(socketserver.ForkingMixIn, object):
1146
"""Like socketserver.ForkingMixIn, but also pass a pipe pair."""
1661
class MultiprocessingMixIn(object):
1662
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
1663
def sub_process_main(self, request, address):
1664
try:
1665
self.finish_request(request, address)
1666
except:
1667
self.handle_error(request, address)
1668
self.close_request(request)
1669
1670
def process_request(self, request, address):
1671
"""Start a new process to process the request."""
1672
proc = multiprocessing.Process(target = self.sub_process_main,
1673
args = (request,
1674
address))
1675
proc.start()
1676
return proc
1677
1678
1679
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1680
""" adds a pipe to the MixIn """
1147
1681
def process_request(self, request, client_address):
1148
1682
"""Overrides and wraps the original process_request().
1149
1683
1150
1684
This function creates a new pipe in self.pipe
1151
1685
"""
1152
# Child writes to child_pipe
1153
self.child_pipe = map(os.fdopen, os.pipe(), u"rw", (1, 0))
1154
# Parent writes to parent_pipe
1155
self.parent_pipe = map(os.fdopen, os.pipe(), u"rw", (1, 0))
1156
super(ForkingMixInWithPipes,
1157
self).process_request(request, client_address)
1158
# Close unused ends for parent
1159
self.parent_pipe[0].close() # close read end
1160
self.child_pipe[1].close() # close write end
1161
self.add_pipe_fds(self.child_pipe[0], self.parent_pipe[1])
1162
def add_pipe_fds(self, child_pipe_fd, parent_pipe_fd):
1686
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1687
1688
proc = MultiprocessingMixIn.process_request(self, request,
1689
client_address)
1690
self.child_pipe.close()
1691
self.add_pipe(parent_pipe, proc)
1692
1693
def add_pipe(self, parent_pipe, proc):
1163
1694
"""Dummy function; override as necessary"""
1164
child_pipe_fd.close()
1165
parent_pipe_fd.close()
1166
1167
1168
class IPv6_TCPServer(ForkingMixInWithPipes,
1695
raise NotImplementedError
1696
1697
1698
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1169
1699
socketserver.TCPServer, object):
1170
1700
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1171
1701
1187
1717
bind to an address or port if they were not specified."""
1188
1718
if self.interface is not None:
1189
1719
if SO_BINDTODEVICE is None:
1190
logger.error(u"SO_BINDTODEVICE does not exist;"
1191
u" cannot bind to interface %s",
1720
logger.error("SO_BINDTODEVICE does not exist;"
1721
" cannot bind to interface %s",
1192
1722
self.interface)
1193
1723
else:
1194
1724
try:
1195
1725
self.socket.setsockopt(socket.SOL_SOCKET,
1196
1726
SO_BINDTODEVICE,
1197
1727
str(self.interface
1198
+ u'\0'))
1199
except socket.error, error:
1728
+ '\0'))
1729
except socket.error as error:
1200
1730
if error[0] == errno.EPERM:
1201
logger.error(u"No permission to"
1202
u" bind to interface %s",
1731
logger.error("No permission to"
1732
" bind to interface %s",
1203
1733
self.interface)
1204
1734
elif error[0] == errno.ENOPROTOOPT:
1205
logger.error(u"SO_BINDTODEVICE not available;"
1206
u" cannot bind to interface %s",
1735
logger.error("SO_BINDTODEVICE not available;"
1736
" cannot bind to interface %s",
1207
1737
self.interface)
1208
1738
else:
1209
1739
raise
1211
1741
if self.server_address[0] or self.server_address[1]:
1212
1742
if not self.server_address[0]:
1213
1743
if self.address_family == socket.AF_INET6:
1214
any_address = u"::" # in6addr_any
1744
any_address = "::" # in6addr_any
1215
1745
else:
1216
1746
any_address = socket.INADDR_ANY
1217
1747
self.server_address = (any_address,
1244
1774
self.enabled = False
1245
1775
self.clients = clients
1246
1776
if self.clients is None:
1247
self.clients = set()
1777
self.clients = {}
1248
1778
self.use_dbus = use_dbus
1249
1779
self.gnutls_priority = gnutls_priority
1250
1780
IPv6_TCPServer.__init__(self, server_address,
1254
1784
def server_activate(self):
1255
1785
if self.enabled:
1256
1786
return socketserver.TCPServer.server_activate(self)
1787
1257
1788
def enable(self):
1258
1789
self.enabled = True
1259
def add_pipe_fds(self, child_pipe_fd, parent_pipe_fd):
1790
1791
def add_pipe(self, parent_pipe, proc):
1260
1792
# Call "handle_ipc" for both data and EOF events
1261
gobject.io_add_watch(child_pipe_fd.fileno(),
1793
gobject.io_add_watch(parent_pipe.fileno(),
1262
1794
gobject.IO_IN | gobject.IO_HUP,
1263
1795
functools.partial(self.handle_ipc,
1264
reply = parent_pipe_fd,
1265
sender= child_pipe_fd))
1266
def handle_ipc(self, source, condition, reply=None, sender=None):
1796
parent_pipe =
1797
parent_pipe,
1798
proc = proc))
1799
1800
def handle_ipc(self, source, condition, parent_pipe=None,
1801
proc = None, client_object=None):
1267
1802
condition_names = {
1268
gobject.IO_IN: u"IN", # There is data to read.
1269
gobject.IO_OUT: u"OUT", # Data can be written (without
1803
gobject.IO_IN: "IN", # There is data to read.
1804
gobject.IO_OUT: "OUT", # Data can be written (without
1270
1805
# blocking).
1271
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1272
gobject.IO_ERR: u"ERR", # Error condition.
1273
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1806
gobject.IO_PRI: "PRI", # There is urgent data to read.
1807
gobject.IO_ERR: "ERR", # Error condition.
1808
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1274
1809
# broken, usually for pipes and
1275
1810
# sockets).
1276
1811
}
1278
1813
for cond, name in
1279
1814
condition_names.iteritems()
1280
1815
if cond & condition)
1281
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1282
conditions_string)
1283
1284
# Read a line from the file object
1285
cmdline = sender.readline()
1286
if not cmdline: # Empty line means end of file
1287
# close the IPC pipes
1288
sender.close()
1289
reply.close()
1290
1291
# Stop calling this function
1292
return False
1293
1294
logger.debug(u"IPC command: %r", cmdline)
1295
1296
# Parse and act on command
1297
cmd, args = cmdline.rstrip(u"\r\n").split(None, 1)
1298
1299
if cmd == u"NOTFOUND":
1300
fpr, address = args.split(None, 1)
1301
logger.warning(u"Client not found for fingerprint: %s, ad"
1302
u"dress: %s", fpr, address)
1303
if self.use_dbus:
1304
# Emit D-Bus signal
1305
mandos_dbus_service.ClientNotFound(fpr, address)
1306
elif cmd == u"DISABLED":
1307
for client in self.clients:
1308
if client.name == args:
1309
logger.warning(u"Client %s is disabled", args)
1310
if self.use_dbus:
1311
# Emit D-Bus signal
1312
client.Rejected()
1313
break
1314
else:
1315
logger.error(u"Unknown client %s is disabled", args)
1316
elif cmd == u"SENDING":
1317
for client in self.clients:
1318
if client.name == args:
1319
logger.info(u"Sending secret to %s", client.name)
1320
client.checked_ok()
1321
if self.use_dbus:
1322
# Emit D-Bus signal
1323
client.GotSecret()
1324
break
1325
else:
1326
logger.error(u"Sending secret to unknown client %s",
1327
args)
1328
elif cmd == u"GETATTR":
1329
attr_name, fpr = args.split(None, 1)
1330
for client in self.clients:
1331
if client.fingerprint == fpr:
1332
attr_value = getattr(client, attr_name, None)
1333
logger.debug("IPC reply: %r", attr_value)
1334
pickle.dump(attr_value, reply)
1335
break
1336
else:
1337
logger.error(u"Client %s on address %s requesting "
1338
u"attribute %s not found", fpr, address,
1339
attr_name)
1340
pickle.dump(None, reply)
1341
else:
1342
logger.error(u"Unknown IPC command: %r", cmdline)
1343
1344
# Keep calling this function
1816
# error, or the other end of multiprocessing.Pipe has closed
1817
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
1818
# Wait for other process to exit
1819
proc.join()
1820
return False
1821
1822
# Read a request from the child
1823
request = parent_pipe.recv()
1824
command = request[0]
1825
1826
if command == 'init':
1827
fpr = request[1]
1828
address = request[2]
1829
1830
for c in self.clients.itervalues():
1831
if c.fingerprint == fpr:
1832
client = c
1833
break
1834
else:
1835
logger.info("Client not found for fingerprint: %s, ad"
1836
"dress: %s", fpr, address)
1837
if self.use_dbus:
1838
# Emit D-Bus signal
1839
mandos_dbus_service.ClientNotFound(fpr,
1840
address[0])
1841
parent_pipe.send(False)
1842
return False
1843
1844
gobject.io_add_watch(parent_pipe.fileno(),
1845
gobject.IO_IN | gobject.IO_HUP,
1846
functools.partial(self.handle_ipc,
1847
parent_pipe =
1848
parent_pipe,
1849
proc = proc,
1850
client_object =
1851
client))
1852
parent_pipe.send(True)
1853
# remove the old hook in favor of the new above hook on
1854
# same fileno
1855
return False
1856
if command == 'funcall':
1857
funcname = request[1]
1858
args = request[2]
1859
kwargs = request[3]
1860
1861
parent_pipe.send(('data', getattr(client_object,
1862
funcname)(*args,
1863
**kwargs)))
1864
1865
if command == 'getattr':
1866
attrname = request[1]
1867
if callable(client_object.__getattribute__(attrname)):
1868
parent_pipe.send(('function',))
1869
else:
1870
parent_pipe.send(('data', client_object
1871
.__getattribute__(attrname)))
1872
1873
if command == 'setattr':
1874
attrname = request[1]
1875
value = request[2]
1876
setattr(client_object, attrname, value)
1877
1345
1878
return True
1346
1879
1347
1880
1348
1881
def string_to_delta(interval):
1349
1882
"""Parse a string and return a datetime.timedelta
1350
1883
1351
>>> string_to_delta(u'7d')
1884
>>> string_to_delta('7d')
1352
1885
datetime.timedelta(7)
1353
>>> string_to_delta(u'60s')
1886
>>> string_to_delta('60s')
1354
1887
datetime.timedelta(0, 60)
1355
>>> string_to_delta(u'60m')
1888
>>> string_to_delta('60m')
1356
1889
datetime.timedelta(0, 3600)
1357
>>> string_to_delta(u'24h')
1890
>>> string_to_delta('24h')
1358
1891
datetime.timedelta(1)
1359
>>> string_to_delta(u'1w')
1892
>>> string_to_delta('1w')
1360
1893
datetime.timedelta(7)
1361
>>> string_to_delta(u'5m 30s')
1894
>>> string_to_delta('5m 30s')
1362
1895
datetime.timedelta(0, 330)
1363
1896
"""
1364
1897
timevalue = datetime.timedelta(0)
1366
1899
try:
1367
1900
suffix = unicode(s[-1])
1368
1901
value = int(s[:-1])
1369
if suffix == u"d":
1902
if suffix == "d":
1370
1903
delta = datetime.timedelta(value)
1371
elif suffix == u"s":
1904
elif suffix == "s":
1372
1905
delta = datetime.timedelta(0, value)
1373
elif suffix == u"m":
1906
elif suffix == "m":
1374
1907
delta = datetime.timedelta(0, 0, 0, 0, value)
1375
elif suffix == u"h":
1908
elif suffix == "h":
1376
1909
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1377
elif suffix == u"w":
1910
elif suffix == "w":
1378
1911
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1379
1912
else:
1380
raise ValueError(u"Unknown suffix %r" % suffix)
1381
except (ValueError, IndexError), e:
1382
raise ValueError(e.message)
1913
raise ValueError("Unknown suffix %r" % suffix)
1914
except (ValueError, IndexError) as e:
1915
raise ValueError(*(e.args))
1383
1916
timevalue += delta
1384
1917
return timevalue
1385
1918
1386
1919
1387
def if_nametoindex(interface):
1388
"""Call the C function if_nametoindex(), or equivalent
1389
1390
Note: This function cannot accept a unicode string."""
1391
global if_nametoindex
1392
try:
1393
if_nametoindex = (ctypes.cdll.LoadLibrary
1394
(ctypes.util.find_library(u"c"))
1395
.if_nametoindex)
1396
except (OSError, AttributeError):
1397
logger.warning(u"Doing if_nametoindex the hard way")
1398
def if_nametoindex(interface):
1399
"Get an interface index the hard way, i.e. using fcntl()"
1400
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1401
with contextlib.closing(socket.socket()) as s:
1402
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1403
struct.pack(str(u"16s16x"),
1404
interface))
1405
interface_index = struct.unpack(str(u"I"),
1406
ifreq[16:20])[0]
1407
return interface_index
1408
return if_nametoindex(interface)
1409
1410
1411
1920
def daemon(nochdir = False, noclose = False):
1412
1921
"""See daemon(3). Standard BSD Unix function.
1413
1922
1416
1925
sys.exit()
1417
1926
os.setsid()
1418
1927
if not nochdir:
1419
os.chdir(u"/")
1928
os.chdir("/")
1420
1929
if os.fork():
1421
1930
sys.exit()
1422
1931
if not noclose:
1424
1933
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1425
1934
if not stat.S_ISCHR(os.fstat(null).st_mode):
1426
1935
raise OSError(errno.ENODEV,
1427
u"%s not a character device"
1936
"%s not a character device"
1428
1937
% os.path.devnull)
1429
1938
os.dup2(null, sys.stdin.fileno())
1430
1939
os.dup2(null, sys.stdout.fileno())
1438
1947
##################################################################
1439
1948
# Parsing of options, both command line and config file
1440
1949
1441
parser = optparse.OptionParser(version = "%%prog %s" % version)
1442
parser.add_option("-i", u"--interface", type=u"string",
1443
metavar="IF", help=u"Bind to interface IF")
1444
parser.add_option("-a", u"--address", type=u"string",
1445
help=u"Address to listen for requests on")
1446
parser.add_option("-p", u"--port", type=u"int",
1447
help=u"Port number to receive requests on")
1448
parser.add_option("--check", action=u"store_true",
1449
help=u"Run self-test")
1450
parser.add_option("--debug", action=u"store_true",
1451
help=u"Debug mode; run in foreground and log to"
1452
u" terminal")
1453
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1454
u" priority string (see GnuTLS documentation)")
1455
parser.add_option("--servicename", type=u"string",
1456
metavar=u"NAME", help=u"Zeroconf service name")
1457
parser.add_option("--configdir", type=u"string",
1458
default=u"/etc/mandos", metavar=u"DIR",
1459
help=u"Directory to search for configuration"
1460
u" files")
1461
parser.add_option("--no-dbus", action=u"store_false",
1462
dest=u"use_dbus", help=u"Do not provide D-Bus"
1463
u" system bus interface")
1464
parser.add_option("--no-ipv6", action=u"store_false",
1465
dest=u"use_ipv6", help=u"Do not use IPv6")
1466
options = parser.parse_args()[0]
1950
parser = argparse.ArgumentParser()
1951
parser.add_argument("-v", "--version", action="version",
1952
version = "%%(prog)s %s" % version,
1953
help="show version number and exit")
1954
parser.add_argument("-i", "--interface", metavar="IF",
1955
help="Bind to interface IF")
1956
parser.add_argument("-a", "--address",
1957
help="Address to listen for requests on")
1958
parser.add_argument("-p", "--port", type=int,
1959
help="Port number to receive requests on")
1960
parser.add_argument("--check", action="store_true",
1961
help="Run self-test")
1962
parser.add_argument("--debug", action="store_true",
1963
help="Debug mode; run in foreground and log"
1964
" to terminal")
1965
parser.add_argument("--debuglevel", metavar="LEVEL",
1966
help="Debug level for stdout output")
1967
parser.add_argument("--priority", help="GnuTLS"
1968
" priority string (see GnuTLS documentation)")
1969
parser.add_argument("--servicename",
1970
metavar="NAME", help="Zeroconf service name")
1971
parser.add_argument("--configdir",
1972
default="/etc/mandos", metavar="DIR",
1973
help="Directory to search for configuration"
1974
" files")
1975
parser.add_argument("--no-dbus", action="store_false",
1976
dest="use_dbus", help="Do not provide D-Bus"
1977
" system bus interface")
1978
parser.add_argument("--no-ipv6", action="store_false",
1979
dest="use_ipv6", help="Do not use IPv6")
1980
parser.add_argument("--no-restore", action="store_false",
1981
dest="restore", help="Do not restore stored"
1982
" state")
1983
parser.add_argument("--statedir", metavar="DIR",
1984
help="Directory to save/restore state in")
1985
1986
options = parser.parse_args()
1467
1987
1468
1988
if options.check:
1469
1989
import doctest
1471
1991
sys.exit()
1472
1992
1473
1993
# Default values for config file for server-global settings
1474
server_defaults = { u"interface": u"",
1475
u"address": u"",
1476
u"port": u"",
1477
u"debug": u"False",
1478
u"priority":
1479
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1480
u"servicename": u"Mandos",
1481
u"use_dbus": u"True",
1482
u"use_ipv6": u"True",
1994
server_defaults = { "interface": "",
1995
"address": "",
1996
"port": "",
1997
"debug": "False",
1998
"priority":
1999
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2000
"servicename": "Mandos",
2001
"use_dbus": "True",
2002
"use_ipv6": "True",
2003
"debuglevel": "",
2004
"restore": "True",
2005
"statedir": "/var/lib/mandos"
1483
2006
}
1484
2007
1485
2008
# Parse config file for server-global settings
1486
2009
server_config = configparser.SafeConfigParser(server_defaults)
1487
2010
del server_defaults
1488
2011
server_config.read(os.path.join(options.configdir,
1489
u"mandos.conf"))
2012
"mandos.conf"))
1490
2013
# Convert the SafeConfigParser object to a dict
1491
2014
server_settings = server_config.defaults()
1492
2015
# Use the appropriate methods on the non-string config options
1493
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1494
server_settings[option] = server_config.getboolean(u"DEFAULT",
2016
for option in ("debug", "use_dbus", "use_ipv6"):
2017
server_settings[option] = server_config.getboolean("DEFAULT",
1495
2018
option)
1496
2019
if server_settings["port"]:
1497
server_settings["port"] = server_config.getint(u"DEFAULT",
1498
u"port")
2020
server_settings["port"] = server_config.getint("DEFAULT",
2021
"port")
1499
2022
del server_config
1500
2023
1501
2024
# Override the settings from the config file with command line
1502
2025
# options, if set.
1503
for option in (u"interface", u"address", u"port", u"debug",
1504
u"priority", u"servicename", u"configdir",
1505
u"use_dbus", u"use_ipv6"):
2026
for option in ("interface", "address", "port", "debug",
2027
"priority", "servicename", "configdir",
2028
"use_dbus", "use_ipv6", "debuglevel", "restore",
2029
"statedir"):
1506
2030
value = getattr(options, option)
1507
2031
if value is not None:
1508
2032
server_settings[option] = value
1516
2040
##################################################################
1517
2041
1518
2042
# For convenience
1519
debug = server_settings[u"debug"]
1520
use_dbus = server_settings[u"use_dbus"]
1521
use_ipv6 = server_settings[u"use_ipv6"]
1522
1523
if not debug:
1524
syslogger.setLevel(logging.WARNING)
1525
console.setLevel(logging.WARNING)
1526
1527
if server_settings[u"servicename"] != u"Mandos":
2043
debug = server_settings["debug"]
2044
debuglevel = server_settings["debuglevel"]
2045
use_dbus = server_settings["use_dbus"]
2046
use_ipv6 = server_settings["use_ipv6"]
2047
stored_state_path = os.path.join(server_settings["statedir"],
2048
stored_state_file)
2049
2050
if debug:
2051
initlogger(logging.DEBUG)
2052
else:
2053
if not debuglevel:
2054
initlogger()
2055
else:
2056
level = getattr(logging, debuglevel.upper())
2057
initlogger(level)
2058
2059
if server_settings["servicename"] != "Mandos":
1528
2060
syslogger.setFormatter(logging.Formatter
1529
(u'Mandos (%s) [%%(process)d]:'
1530
u' %%(levelname)s: %%(message)s'
1531
% server_settings[u"servicename"]))
2061
('Mandos (%s) [%%(process)d]:'
2062
' %%(levelname)s: %%(message)s'
2063
% server_settings["servicename"]))
1532
2064
1533
2065
# Parse config file with clients
1534
client_defaults = { u"timeout": u"1h",
1535
u"interval": u"5m",
1536
u"checker": u"fping -q -- %%(host)s",
1537
u"host": u"",
2066
client_defaults = { "timeout": "5m",
2067
"extended_timeout": "15m",
2068
"interval": "2m",
2069
"checker": "fping -q -- %%(host)s",
2070
"host": "",
2071
"approval_delay": "0s",
2072
"approval_duration": "1s",
1538
2073
}
1539
2074
client_config = configparser.SafeConfigParser(client_defaults)
1540
client_config.read(os.path.join(server_settings[u"configdir"],
1541
u"clients.conf"))
2075
client_config.read(os.path.join(server_settings["configdir"],
2076
"clients.conf"))
1542
2077
1543
2078
global mandos_dbus_service
1544
2079
mandos_dbus_service = None
1545
2080
1546
tcp_server = MandosServer((server_settings[u"address"],
1547
server_settings[u"port"]),
2081
tcp_server = MandosServer((server_settings["address"],
2082
server_settings["port"]),
1548
2083
ClientHandler,
1549
interface=server_settings[u"interface"],
2084
interface=(server_settings["interface"]
2085
or None),
1550
2086
use_ipv6=use_ipv6,
1551
2087
gnutls_priority=
1552
server_settings[u"priority"],
2088
server_settings["priority"],
1553
2089
use_dbus=use_dbus)
1554
pidfilename = u"/var/run/mandos.pid"
1555
try:
1556
pidfile = open(pidfilename, u"w")
1557
except IOError:
1558
logger.error(u"Could not open file %r", pidfilename)
2090
if not debug:
2091
pidfilename = "/var/run/mandos.pid"
2092
try:
2093
pidfile = open(pidfilename, "w")
2094
except IOError:
2095
logger.error("Could not open file %r", pidfilename)
1559
2096
1560
2097
try:
1561
uid = pwd.getpwnam(u"_mandos").pw_uid
1562
gid = pwd.getpwnam(u"_mandos").pw_gid
2098
uid = pwd.getpwnam("_mandos").pw_uid
2099
gid = pwd.getpwnam("_mandos").pw_gid
1563
2100
except KeyError:
1564
2101
try:
1565
uid = pwd.getpwnam(u"mandos").pw_uid
1566
gid = pwd.getpwnam(u"mandos").pw_gid
2102
uid = pwd.getpwnam("mandos").pw_uid
2103
gid = pwd.getpwnam("mandos").pw_gid
1567
2104
except KeyError:
1568
2105
try:
1569
uid = pwd.getpwnam(u"nobody").pw_uid
1570
gid = pwd.getpwnam(u"nobody").pw_gid
2106
uid = pwd.getpwnam("nobody").pw_uid
2107
gid = pwd.getpwnam("nobody").pw_gid
1571
2108
except KeyError:
1572
2109
uid = 65534
1573
2110
gid = 65534
1574
2111
try:
1575
2112
os.setgid(gid)
1576
2113
os.setuid(uid)
1577
except OSError, error:
2114
except OSError as error:
1578
2115
if error[0] != errno.EPERM:
1579
2116
raise error
1580
2117
1581
# Enable all possible GnuTLS debugging
1582
2118
if debug:
2119
# Enable all possible GnuTLS debugging
2120
1583
2121
# "Use a log level over 10 to enable all debugging options."
1584
2122
# - GnuTLS manual
1585
2123
gnutls.library.functions.gnutls_global_set_log_level(11)
1586
2124
1587
2125
@gnutls.library.types.gnutls_log_func
1588
2126
def debug_gnutls(level, string):
1589
logger.debug(u"GnuTLS: %s", string[:-1])
2127
logger.debug("GnuTLS: %s", string[:-1])
1590
2128
1591
2129
(gnutls.library.functions
1592
2130
.gnutls_global_set_log_function(debug_gnutls))
2131
2132
# Redirect stdin so all checkers get /dev/null
2133
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2134
os.dup2(null, sys.stdin.fileno())
2135
if null > 2:
2136
os.close(null)
2137
else:
2138
# No console logging
2139
logger.removeHandler(console)
2140
2141
# Need to fork before connecting to D-Bus
2142
if not debug:
2143
# Close all input and output, do double fork, etc.
2144
daemon()
1593
2145
1594
2146
global main_loop
1595
2147
# From the Avahi example code
1599
2151
# End of Avahi example code
1600
2152
if use_dbus:
1601
2153
try:
1602
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
2154
bus_name = dbus.service.BusName("se.recompile.Mandos",
1603
2155
bus, do_not_queue=True)
1604
except dbus.exceptions.NameExistsException, e:
1605
logger.error(unicode(e) + u", disabling D-Bus")
2156
old_bus_name = (dbus.service.BusName
2157
("se.bsnet.fukt.Mandos", bus,
2158
do_not_queue=True))
2159
except dbus.exceptions.NameExistsException as e:
2160
logger.error(unicode(e) + ", disabling D-Bus")
1606
2161
use_dbus = False
1607
server_settings[u"use_dbus"] = False
2162
server_settings["use_dbus"] = False
1608
2163
tcp_server.use_dbus = False
1609
2164
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1610
service = AvahiService(name = server_settings[u"servicename"],
1611
servicetype = u"_mandos._tcp",
1612
protocol = protocol, bus = bus)
2165
service = AvahiServiceToSyslog(name =
2166
server_settings["servicename"],
2167
servicetype = "_mandos._tcp",
2168
protocol = protocol, bus = bus)
1613
2169
if server_settings["interface"]:
1614
2170
service.interface = (if_nametoindex
1615
(str(server_settings[u"interface"])))
2171
(str(server_settings["interface"])))
2172
2173
global multiprocessing_manager
2174
multiprocessing_manager = multiprocessing.Manager()
1616
2175
1617
2176
client_class = Client
1618
2177
if use_dbus:
1619
client_class = functools.partial(ClientDBus, bus = bus)
1620
tcp_server.clients.update(set(
1621
client_class(name = section,
1622
config= dict(client_config.items(section)))
1623
for section in client_config.sections()))
2178
client_class = functools.partial(ClientDBusTransitional,
2179
bus = bus)
2180
2181
special_settings = {
2182
# Some settings need to be accessd by special methods;
2183
# booleans need .getboolean(), etc. Here is a list of them:
2184
"approved_by_default":
2185
lambda section:
2186
client_config.getboolean(section, "approved_by_default"),
2187
"enabled":
2188
lambda section:
2189
client_config.getboolean(section, "enabled"),
2190
}
2191
# Construct a new dict of client settings of this form:
2192
# { client_name: {setting_name: value, ...}, ...}
2193
# with exceptions for any special settings as defined above
2194
client_settings = dict((clientname,
2195
dict((setting,
2196
(value
2197
if setting not in special_settings
2198
else special_settings[setting]
2199
(clientname)))
2200
for setting, value in
2201
client_config.items(clientname)))
2202
for clientname in client_config.sections())
2203
2204
old_client_settings = {}
2205
clients_data = []
2206
2207
# Get client data and settings from last running state.
2208
if server_settings["restore"]:
2209
try:
2210
with open(stored_state_path, "rb") as stored_state:
2211
clients_data, old_client_settings = (pickle.load
2212
(stored_state))
2213
os.remove(stored_state_path)
2214
except IOError as e:
2215
logger.warning("Could not load persistent state: {0}"
2216
.format(e))
2217
if e.errno != errno.ENOENT:
2218
raise
2219
2220
with Crypto() as crypt:
2221
for client in clients_data:
2222
client_name = client["name"]
2223
2224
# Decide which value to use after restoring saved state.
2225
# We have three different values: Old config file,
2226
# new config file, and saved state.
2227
# New config value takes precedence if it differs from old
2228
# config value, otherwise use saved state.
2229
for name, value in client_settings[client_name].items():
2230
try:
2231
# For each value in new config, check if it
2232
# differs from the old config value (Except for
2233
# the "secret" attribute)
2234
if (name != "secret" and
2235
value != old_client_settings[client_name]
2236
[name]):
2237
setattr(client, name, value)
2238
except KeyError:
2239
pass
2240
2241
# Clients who has passed its expire date can still be
2242
# enabled if its last checker was sucessful. Clients
2243
# whose checker failed before we stored its state is
2244
# assumed to have failed all checkers during downtime.
2245
if client["enabled"] and client["last_checked_ok"]:
2246
if ((datetime.datetime.utcnow()
2247
- client["last_checked_ok"])
2248
> client["interval"]):
2249
if client["last_checker_status"] != 0:
2250
client["enabled"] = False
2251
else:
2252
client["expires"] = (datetime.datetime
2253
.utcnow()
2254
+ client["timeout"])
2255
2256
client["changedstate"] = (multiprocessing_manager
2257
.Condition
2258
(multiprocessing_manager
2259
.Lock()))
2260
if use_dbus:
2261
new_client = (ClientDBusTransitional.__new__
2262
(ClientDBusTransitional))
2263
tcp_server.clients[client_name] = new_client
2264
new_client.bus = bus
2265
for name, value in client.iteritems():
2266
setattr(new_client, name, value)
2267
client_object_name = unicode(client_name).translate(
2268
{ord("."): ord("_"),
2269
ord("-"): ord("_")})
2270
new_client.dbus_object_path = (dbus.ObjectPath
2271
("/clients/"
2272
+ client_object_name))
2273
DBusObjectWithProperties.__init__(new_client,
2274
new_client.bus,
2275
new_client
2276
.dbus_object_path)
2277
else:
2278
tcp_server.clients[client_name] = (Client.__new__
2279
(Client))
2280
for name, value in client.iteritems():
2281
setattr(tcp_server.clients[client_name],
2282
name, value)
2283
2284
try:
2285
tcp_server.clients[client_name].secret = (
2286
crypt.decrypt(tcp_server.clients[client_name]
2287
.encrypted_secret,
2288
client_settings[client_name]
2289
["secret"]))
2290
except CryptoError:
2291
# If decryption fails, we use secret from new settings
2292
tcp_server.clients[client_name].secret = (
2293
client_settings[client_name]["secret"])
2294
2295
# Create/remove clients based on new changes made to config
2296
for clientname in set(old_client_settings) - set(client_settings):
2297
del tcp_server.clients[clientname]
2298
for clientname in set(client_settings) - set(old_client_settings):
2299
tcp_server.clients[clientname] = (client_class(name
2300
= clientname,
2301
config =
2302
client_settings
2303
[clientname]))
2304
1624
2305
if not tcp_server.clients:
1625
logger.warning(u"No clients defined")
1626
1627
if debug:
1628
# Redirect stdin so all checkers get /dev/null
1629
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1630
os.dup2(null, sys.stdin.fileno())
1631
if null > 2:
1632
os.close(null)
1633
else:
1634
# No console logging
1635
logger.removeHandler(console)
1636
# Close all input and output, do double fork, etc.
1637
daemon()
1638
1639
try:
1640
with pidfile:
1641
pid = os.getpid()
1642
pidfile.write(str(pid) + "\n")
1643
del pidfile
1644
except IOError:
1645
logger.error(u"Could not write to file %r with PID %d",
1646
pidfilename, pid)
1647
except NameError:
1648
# "pidfile" was never created
1649
pass
1650
del pidfilename
1651
2306
logger.warning("No clients defined")
2307
1652
2308
if not debug:
2309
try:
2310
with pidfile:
2311
pid = os.getpid()
2312
pidfile.write(str(pid) + "\n".encode("utf-8"))
2313
del pidfile
2314
except IOError:
2315
logger.error("Could not write to file %r with PID %d",
2316
pidfilename, pid)
2317
except NameError:
2318
# "pidfile" was never created
2319
pass
2320
del pidfilename
2321
1653
2322
signal.signal(signal.SIGINT, signal.SIG_IGN)
2323
1654
2324
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1655
2325
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1656
2326
1658
2328
class MandosDBusService(dbus.service.Object):
1659
2329
"""A D-Bus proxy object"""
1660
2330
def __init__(self):
1661
dbus.service.Object.__init__(self, bus, u"/")
1662
_interface = u"se.bsnet.fukt.Mandos"
2331
dbus.service.Object.__init__(self, bus, "/")
2332
_interface = "se.recompile.Mandos"
1663
2333
1664
@dbus.service.signal(_interface, signature=u"o")
2334
@dbus.service.signal(_interface, signature="o")
1665
2335
def ClientAdded(self, objpath):
1666
2336
"D-Bus signal"
1667
2337
pass
1668
2338
1669
@dbus.service.signal(_interface, signature=u"ss")
2339
@dbus.service.signal(_interface, signature="ss")
1670
2340
def ClientNotFound(self, fingerprint, address):
1671
2341
"D-Bus signal"
1672
2342
pass
1673
2343
1674
@dbus.service.signal(_interface, signature=u"os")
2344
@dbus.service.signal(_interface, signature="os")
1675
2345
def ClientRemoved(self, objpath, name):
1676
2346
"D-Bus signal"
1677
2347
pass
1678
2348
1679
@dbus.service.method(_interface, out_signature=u"ao")
2349
@dbus.service.method(_interface, out_signature="ao")
1680
2350
def GetAllClients(self):
1681
2351
"D-Bus method"
1682
2352
return dbus.Array(c.dbus_object_path
1683
for c in tcp_server.clients)
2353
for c in
2354
tcp_server.clients.itervalues())
1684
2355
1685
2356
@dbus.service.method(_interface,
1686
out_signature=u"a{oa{sv}}")
2357
out_signature="a{oa{sv}}")
1687
2358
def GetAllClientsWithProperties(self):
1688
2359
"D-Bus method"
1689
2360
return dbus.Dictionary(
1690
((c.dbus_object_path, c.GetAll(u""))
1691
for c in tcp_server.clients),
1692
signature=u"oa{sv}")
2361
((c.dbus_object_path, c.GetAll(""))
2362
for c in tcp_server.clients.itervalues()),
2363
signature="oa{sv}")
1693
2364
1694
@dbus.service.method(_interface, in_signature=u"o")
2365
@dbus.service.method(_interface, in_signature="o")
1695
2366
def RemoveClient(self, object_path):
1696
2367
"D-Bus method"
1697
for c in tcp_server.clients:
2368
for c in tcp_server.clients.itervalues():
1698
2369
if c.dbus_object_path == object_path:
1699
tcp_server.clients.remove(c)
2370
del tcp_server.clients[c.name]
1700
2371
c.remove_from_connection()
1701
2372
# Don't signal anything except ClientRemoved
1702
2373
c.disable(quiet=True)
1707
2378
1708
2379
del _interface
1709
2380
1710
mandos_dbus_service = MandosDBusService()
2381
class MandosDBusServiceTransitional(MandosDBusService):
2382
__metaclass__ = AlternateDBusNamesMetaclass
2383
mandos_dbus_service = MandosDBusServiceTransitional()
1711
2384
1712
2385
def cleanup():
1713
2386
"Cleanup function; run on exit"
1714
2387
service.cleanup()
1715
2388
2389
multiprocessing.active_children()
2390
if not (tcp_server.clients or client_settings):
2391
return
2392
2393
# Store client before exiting. Secrets are encrypted with key
2394
# based on what config file has. If config file is
2395
# removed/edited, old secret will thus be unrecovable.
2396
clients = []
2397
with Crypto() as crypt:
2398
for client in tcp_server.clients.itervalues():
2399
key = client_settings[client.name]["secret"]
2400
client.encrypted_secret = crypt.encrypt(client.secret,
2401
key)
2402
client_dict = {}
2403
2404
# A list of attributes that will not be stored when
2405
# shutting down.
2406
exclude = set(("bus", "changedstate", "secret"))
2407
for name, typ in (inspect.getmembers
2408
(dbus.service.Object)):
2409
exclude.add(name)
2410
2411
client_dict["encrypted_secret"] = (client
2412
.encrypted_secret)
2413
for attr in client.client_structure:
2414
if attr not in exclude:
2415
client_dict[attr] = getattr(client, attr)
2416
2417
clients.append(client_dict)
2418
del client_settings[client.name]["secret"]
2419
2420
try:
2421
with os.fdopen(os.open(stored_state_path,
2422
os.O_CREAT|os.O_WRONLY|os.O_TRUNC,
2423
0600), "wb") as stored_state:
2424
pickle.dump((clients, client_settings), stored_state)
2425
except (IOError, OSError) as e:
2426
logger.warning("Could not save persistent state: {0}"
2427
.format(e))
2428
if e.errno not in (errno.ENOENT, errno.EACCES):
2429
raise
2430
2431
# Delete all clients, and settings from config
1716
2432
while tcp_server.clients:
1717
client = tcp_server.clients.pop()
2433
name, client = tcp_server.clients.popitem()
1718
2434
if use_dbus:
1719
2435
client.remove_from_connection()
1720
client.disable_hook = None
1721
2436
# Don't signal anything except ClientRemoved
1722
2437
client.disable(quiet=True)
1723
2438
if use_dbus:
1724
2439
# Emit D-Bus signal
1725
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
2440
mandos_dbus_service.ClientRemoved(client
2441
.dbus_object_path,
1726
2442
client.name)
2443
client_settings.clear()
1727
2444
1728
2445
atexit.register(cleanup)
1729
2446
1730
for client in tcp_server.clients:
2447
for client in tcp_server.clients.itervalues():
1731
2448
if use_dbus:
1732
2449
# Emit D-Bus signal
1733
2450
mandos_dbus_service.ClientAdded(client.dbus_object_path)
1734
client.enable()
2451
# Need to initiate checking of clients
2452
if client.enabled:
2453
client.init_checker()
1735
2454
1736
2455
tcp_server.enable()
1737
2456
tcp_server.server_activate()
1739
2458
# Find out what port we got
1740
2459
service.port = tcp_server.socket.getsockname()[1]
1741
2460
if use_ipv6:
1742
logger.info(u"Now listening on address %r, port %d,"
2461
logger.info("Now listening on address %r, port %d,"
1743
2462
" flowinfo %d, scope_id %d"
1744
2463
% tcp_server.socket.getsockname())
1745
2464
else: # IPv4
1746
logger.info(u"Now listening on address %r, port %d"
2465
logger.info("Now listening on address %r, port %d"
1747
2466
% tcp_server.socket.getsockname())
1748
2467
1749
2468
#service.interface = tcp_server.socket.getsockname()[3]
1752
2471
# From the Avahi example code
1753
2472
try:
1754
2473
service.activate()
1755
except dbus.exceptions.DBusException, error:
1756
logger.critical(u"DBusException: %s", error)
2474
except dbus.exceptions.DBusException as error:
2475
logger.critical("DBusException: %s", error)
1757
2476
cleanup()
1758
2477
sys.exit(1)
1759
2478
# End of Avahi example code
1763
2482
(tcp_server.handle_request
1764
2483
(*args[2:], **kwargs) or True))
1765
2484
1766
logger.debug(u"Starting main loop")
2485
logger.debug("Starting main loop")
1767
2486
main_loop.run()
1768
except AvahiError, error:
1769
logger.critical(u"AvahiError: %s", error)
2487
except AvahiError as error:
2488
logger.critical("AvahiError: %s", error)
1770
2489
cleanup()
1771
2490
sys.exit(1)
1772
2491
except KeyboardInterrupt:
1773
2492
if debug:
1774
print >> sys.stderr
1775
logger.debug(u"Server received KeyboardInterrupt")
1776
logger.debug(u"Server exiting")
2493
print("", file=sys.stderr)
2494
logger.debug("Server received KeyboardInterrupt")
2495
logger.debug("Server exiting")
1777
2496
# Must run before the D-Bus bus name gets deregistered
1778
2497
cleanup()
1779
2498
2499
1780
2500
if __name__ == '__main__':
1781
2501
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0