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- Committer: Teddy Hogeborn
- Date: 2012-01-08 10:19:33 UTC
- Revision ID: teddy@recompile.se-20120108101933-xbtodqgepxax8hn1
Tags: version-1.5.2-1
* Makefile (version): Changed to "1.5.2".
* NEWS (Version 1.5.2): New entry.
* debian/changelog (1.5.2-1): - '' -
* NEWS (Version 1.5.2): New entry.
* debian/changelog (1.5.2-1): - '' -
- files added:
- DBUS-API
- debian/source
- network-hooks.d
- files removed:
- plugins.d/plymouth
- 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 © 2008-2012 Teddy Hogeborn
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# Copyright © 2008-2012 Björn Påhlsson
16
16
#
17
17
# This program is free software: you can redistribute it and/or modify
18
18
# it under the terms of the GNU General Public License as published by
28
28
# along with this program. If not, see
29
29
# <http://www.gnu.org/licenses/>.
30
30
#
31
# Contact the authors at <mandos@fukt.bsnet.se>.
31
# Contact the authors at <mandos@recompile.se>.
32
32
#
33
33
34
from __future__ import division, with_statement, absolute_import
34
from __future__ import (division, absolute_import, print_function,
35
unicode_literals)
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
61
62
import functools
62
63
import cPickle as pickle
63
64
import multiprocessing
65
import types
66
import binascii
67
import tempfile
64
68
65
69
import dbus
66
70
import dbus.service
71
75
import ctypes.util
72
76
import xml.dom.minidom
73
77
import inspect
78
import GnuPGInterface
74
79
75
80
try:
76
81
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
80
85
except ImportError:
81
86
SO_BINDTODEVICE = None
82
87
83
84
version = "1.0.14"
85
86
#logger = logging.getLogger(u'mandos')
87
logger = logging.Logger(u'mandos')
88
version = "1.5.2"
89
stored_state_file = "clients.pickle"
90
91
logger = logging.getLogger()
88
92
syslogger = (logging.handlers.SysLogHandler
89
93
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
90
address = "/dev/log"))
91
syslogger.setFormatter(logging.Formatter
92
(u'Mandos [%(process)d]: %(levelname)s:'
93
u' %(message)s'))
94
logger.addHandler(syslogger)
95
96
console = logging.StreamHandler()
97
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
98
u' %(levelname)s:'
99
u' %(message)s'))
100
logger.addHandler(console)
94
address = str("/dev/log")))
95
96
try:
97
if_nametoindex = (ctypes.cdll.LoadLibrary
98
(ctypes.util.find_library("c"))
99
.if_nametoindex)
100
except (OSError, AttributeError):
101
def if_nametoindex(interface):
102
"Get an interface index the hard way, i.e. using fcntl()"
103
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
104
with contextlib.closing(socket.socket()) as s:
105
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
106
struct.pack(str("16s16x"),
107
interface))
108
interface_index = struct.unpack(str("I"),
109
ifreq[16:20])[0]
110
return interface_index
111
112
113
def initlogger(debug, level=logging.WARNING):
114
"""init logger and add loglevel"""
115
116
syslogger.setFormatter(logging.Formatter
117
('Mandos [%(process)d]: %(levelname)s:'
118
' %(message)s'))
119
logger.addHandler(syslogger)
120
121
if debug:
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 PGPError(Exception):
132
"""Exception if encryption/decryption fails"""
133
pass
134
135
136
class PGPEngine(object):
137
"""A simple class for OpenPGP symmetric encryption & decryption"""
138
def __init__(self):
139
self.gnupg = GnuPGInterface.GnuPG()
140
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
141
self.gnupg = GnuPGInterface.GnuPG()
142
self.gnupg.options.meta_interactive = False
143
self.gnupg.options.homedir = self.tempdir
144
self.gnupg.options.extra_args.extend(['--force-mdc',
145
'--quiet',
146
'--no-use-agent'])
147
148
def __enter__(self):
149
return self
150
151
def __exit__ (self, exc_type, exc_value, traceback):
152
self._cleanup()
153
return False
154
155
def __del__(self):
156
self._cleanup()
157
158
def _cleanup(self):
159
if self.tempdir is not None:
160
# Delete contents of tempdir
161
for root, dirs, files in os.walk(self.tempdir,
162
topdown = False):
163
for filename in files:
164
os.remove(os.path.join(root, filename))
165
for dirname in dirs:
166
os.rmdir(os.path.join(root, dirname))
167
# Remove tempdir
168
os.rmdir(self.tempdir)
169
self.tempdir = None
170
171
def password_encode(self, password):
172
# Passphrase can not be empty and can not contain newlines or
173
# NUL bytes. So we prefix it and hex encode it.
174
return b"mandos" + binascii.hexlify(password)
175
176
def encrypt(self, data, password):
177
self.gnupg.passphrase = self.password_encode(password)
178
with open(os.devnull) as devnull:
179
try:
180
proc = self.gnupg.run(['--symmetric'],
181
create_fhs=['stdin', 'stdout'],
182
attach_fhs={'stderr': devnull})
183
with contextlib.closing(proc.handles['stdin']) as f:
184
f.write(data)
185
with contextlib.closing(proc.handles['stdout']) as f:
186
ciphertext = f.read()
187
proc.wait()
188
except IOError as e:
189
raise PGPError(e)
190
self.gnupg.passphrase = None
191
return ciphertext
192
193
def decrypt(self, data, password):
194
self.gnupg.passphrase = self.password_encode(password)
195
with open(os.devnull) as devnull:
196
try:
197
proc = self.gnupg.run(['--decrypt'],
198
create_fhs=['stdin', 'stdout'],
199
attach_fhs={'stderr': devnull})
200
with contextlib.closing(proc.handles['stdin'] ) as f:
201
f.write(data)
202
with contextlib.closing(proc.handles['stdout']) as f:
203
decrypted_plaintext = f.read()
204
proc.wait()
205
except IOError as e:
206
raise PGPError(e)
207
self.gnupg.passphrase = None
208
return decrypted_plaintext
209
210
101
211
102
212
class AvahiError(Exception):
103
213
def __init__(self, value, *args, **kwargs):
119
229
Attributes:
120
230
interface: integer; avahi.IF_UNSPEC or an interface index.
121
231
Used to optionally bind to the specified interface.
122
name: string; Example: u'Mandos'
123
type: string; Example: u'_mandos._tcp'.
232
name: string; Example: 'Mandos'
233
type: string; Example: '_mandos._tcp'.
124
234
See <http://www.dns-sd.org/ServiceTypes.html>
125
235
port: integer; what port to announce
126
236
TXT: list of strings; TXT record for the service
135
245
"""
136
246
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
137
247
servicetype = None, port = None, TXT = None,
138
domain = u"", host = u"", max_renames = 32768,
248
domain = "", host = "", max_renames = 32768,
139
249
protocol = avahi.PROTO_UNSPEC, bus = None):
140
250
self.interface = interface
141
251
self.name = name
150
260
self.group = None # our entry group
151
261
self.server = None
152
262
self.bus = bus
263
self.entry_group_state_changed_match = None
153
264
def rename(self):
154
265
"""Derived from the Avahi example code"""
155
266
if self.rename_count >= self.max_renames:
156
logger.critical(u"No suitable Zeroconf service name found"
157
u" after %i retries, exiting.",
267
logger.critical("No suitable Zeroconf service name found"
268
" after %i retries, exiting.",
158
269
self.rename_count)
159
raise AvahiServiceError(u"Too many renames")
160
self.name = unicode(self.server.GetAlternativeServiceName(self.name))
161
logger.info(u"Changing Zeroconf service name to %r ...",
270
raise AvahiServiceError("Too many renames")
271
self.name = unicode(self.server
272
.GetAlternativeServiceName(self.name))
273
logger.info("Changing Zeroconf service name to %r ...",
162
274
self.name)
163
syslogger.setFormatter(logging.Formatter
164
(u'Mandos (%s) [%%(process)d]:'
165
u' %%(levelname)s: %%(message)s'
166
% self.name))
167
275
self.remove()
168
self.add()
276
try:
277
self.add()
278
except dbus.exceptions.DBusException as error:
279
logger.critical("DBusException: %s", error)
280
self.cleanup()
281
os._exit(1)
169
282
self.rename_count += 1
170
283
def remove(self):
171
284
"""Derived from the Avahi example code"""
285
if self.entry_group_state_changed_match is not None:
286
self.entry_group_state_changed_match.remove()
287
self.entry_group_state_changed_match = None
172
288
if self.group is not None:
173
289
self.group.Reset()
174
290
def add(self):
175
291
"""Derived from the Avahi example code"""
292
self.remove()
176
293
if self.group is None:
177
294
self.group = dbus.Interface(
178
295
self.bus.get_object(avahi.DBUS_NAME,
179
296
self.server.EntryGroupNew()),
180
297
avahi.DBUS_INTERFACE_ENTRY_GROUP)
181
self.group.connect_to_signal('StateChanged',
182
self
183
.entry_group_state_changed)
184
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
298
self.entry_group_state_changed_match = (
299
self.group.connect_to_signal(
300
'StateChanged', self.entry_group_state_changed))
301
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
185
302
self.name, self.type)
186
303
self.group.AddService(
187
304
self.interface,
194
311
self.group.Commit()
195
312
def entry_group_state_changed(self, state, error):
196
313
"""Derived from the Avahi example code"""
197
logger.debug(u"Avahi state change: %i", state)
314
logger.debug("Avahi entry group state change: %i", state)
198
315
199
316
if state == avahi.ENTRY_GROUP_ESTABLISHED:
200
logger.debug(u"Zeroconf service established.")
317
logger.debug("Zeroconf service established.")
201
318
elif state == avahi.ENTRY_GROUP_COLLISION:
202
logger.warning(u"Zeroconf service name collision.")
319
logger.info("Zeroconf service name collision.")
203
320
self.rename()
204
321
elif state == avahi.ENTRY_GROUP_FAILURE:
205
logger.critical(u"Avahi: Error in group state changed %s",
322
logger.critical("Avahi: Error in group state changed %s",
206
323
unicode(error))
207
raise AvahiGroupError(u"State changed: %s"
324
raise AvahiGroupError("State changed: %s"
208
325
% unicode(error))
209
326
def cleanup(self):
210
327
"""Derived from the Avahi example code"""
211
328
if self.group is not None:
212
self.group.Free()
329
try:
330
self.group.Free()
331
except (dbus.exceptions.UnknownMethodException,
332
dbus.exceptions.DBusException):
333
pass
213
334
self.group = None
214
def server_state_changed(self, state):
335
self.remove()
336
def server_state_changed(self, state, error=None):
215
337
"""Derived from the Avahi example code"""
216
if state == avahi.SERVER_COLLISION:
217
logger.error(u"Zeroconf server name collision")
218
self.remove()
338
logger.debug("Avahi server state change: %i", state)
339
bad_states = { avahi.SERVER_INVALID:
340
"Zeroconf server invalid",
341
avahi.SERVER_REGISTERING: None,
342
avahi.SERVER_COLLISION:
343
"Zeroconf server name collision",
344
avahi.SERVER_FAILURE:
345
"Zeroconf server failure" }
346
if state in bad_states:
347
if bad_states[state] is not None:
348
if error is None:
349
logger.error(bad_states[state])
350
else:
351
logger.error(bad_states[state] + ": %r", error)
352
self.cleanup()
219
353
elif state == avahi.SERVER_RUNNING:
220
354
self.add()
355
else:
356
if error is None:
357
logger.debug("Unknown state: %r", state)
358
else:
359
logger.debug("Unknown state: %r: %r", state, error)
221
360
def activate(self):
222
361
"""Derived from the Avahi example code"""
223
362
if self.server is None:
224
363
self.server = dbus.Interface(
225
364
self.bus.get_object(avahi.DBUS_NAME,
226
avahi.DBUS_PATH_SERVER),
365
avahi.DBUS_PATH_SERVER,
366
follow_name_owner_changes=True),
227
367
avahi.DBUS_INTERFACE_SERVER)
228
self.server.connect_to_signal(u"StateChanged",
368
self.server.connect_to_signal("StateChanged",
229
369
self.server_state_changed)
230
370
self.server_state_changed(self.server.GetState())
231
371
372
class AvahiServiceToSyslog(AvahiService):
373
def rename(self):
374
"""Add the new name to the syslog messages"""
375
ret = AvahiService.rename(self)
376
syslogger.setFormatter(logging.Formatter
377
('Mandos (%s) [%%(process)d]:'
378
' %%(levelname)s: %%(message)s'
379
% self.name))
380
return ret
232
381
382
def timedelta_to_milliseconds(td):
383
"Convert a datetime.timedelta() to milliseconds"
384
return ((td.days * 24 * 60 * 60 * 1000)
385
+ (td.seconds * 1000)
386
+ (td.microseconds // 1000))
387
233
388
class Client(object):
234
389
"""A representation of a client host served by this server.
235
390
236
391
Attributes:
237
name: string; from the config file, used in log messages and
238
D-Bus identifiers
392
approved: bool(); 'None' if not yet approved/disapproved
393
approval_delay: datetime.timedelta(); Time to wait for approval
394
approval_duration: datetime.timedelta(); Duration of one approval
395
checker: subprocess.Popen(); a running checker process used
396
to see if the client lives.
397
'None' if no process is running.
398
checker_callback_tag: a gobject event source tag, or None
399
checker_command: string; External command which is run to check
400
if client lives. %() expansions are done at
401
runtime with vars(self) as dict, so that for
402
instance %(name)s can be used in the command.
403
checker_initiator_tag: a gobject event source tag, or None
404
created: datetime.datetime(); (UTC) object creation
405
client_structure: Object describing what attributes a client has
406
and is used for storing the client at exit
407
current_checker_command: string; current running checker_command
408
disable_initiator_tag: a gobject event source tag, or None
409
enabled: bool()
239
410
fingerprint: string (40 or 32 hexadecimal digits); used to
240
411
uniquely identify the client
241
secret: bytestring; sent verbatim (over TLS) to client
242
412
host: string; available for use by the checker command
243
created: datetime.datetime(); (UTC) object creation
244
last_enabled: datetime.datetime(); (UTC)
245
enabled: bool()
413
interval: datetime.timedelta(); How often to start a new checker
414
last_approval_request: datetime.datetime(); (UTC) or None
246
415
last_checked_ok: datetime.datetime(); (UTC) or None
416
last_checker_status: integer between 0 and 255 reflecting exit
417
status of last checker. -1 reflects crashed
418
checker, or None.
419
last_enabled: datetime.datetime(); (UTC) or None
420
name: string; from the config file, used in log messages and
421
D-Bus identifiers
422
secret: bytestring; sent verbatim (over TLS) to client
247
423
timeout: datetime.timedelta(); How long from last_checked_ok
248
424
until this client is disabled
249
interval: datetime.timedelta(); How often to start a new checker
250
disable_hook: If set, called by disable() as disable_hook(self)
251
checker: subprocess.Popen(); a running checker process used
252
to see if the client lives.
253
'None' if no process is running.
254
checker_initiator_tag: a gobject event source tag, or None
255
disable_initiator_tag: - '' -
256
checker_callback_tag: - '' -
257
checker_command: string; External command which is run to check if
258
client lives. %() expansions are done at
259
runtime with vars(self) as dict, so that for
260
instance %(name)s can be used in the command.
261
current_checker_command: string; current running checker_command
262
approved_delay: datetime.timedelta(); Time to wait for approval
263
_approved: bool(); 'None' if not yet approved/disapproved
264
approved_duration: datetime.timedelta(); Duration of one approval
425
extended_timeout: extra long timeout when secret has been sent
426
runtime_expansions: Allowed attributes for runtime expansion.
427
expires: datetime.datetime(); time (UTC) when a client will be
428
disabled, or None
265
429
"""
266
430
267
@staticmethod
268
def _timedelta_to_milliseconds(td):
269
"Convert a datetime.timedelta() to milliseconds"
270
return ((td.days * 24 * 60 * 60 * 1000)
271
+ (td.seconds * 1000)
272
+ (td.microseconds // 1000))
431
runtime_expansions = ("approval_delay", "approval_duration",
432
"created", "enabled", "fingerprint",
433
"host", "interval", "last_checked_ok",
434
"last_enabled", "name", "timeout")
435
client_defaults = { "timeout": "5m",
436
"extended_timeout": "15m",
437
"interval": "2m",
438
"checker": "fping -q -- %%(host)s",
439
"host": "",
440
"approval_delay": "0s",
441
"approval_duration": "1s",
442
"approved_by_default": "True",
443
"enabled": "True",
444
}
273
445
274
446
def timeout_milliseconds(self):
275
447
"Return the 'timeout' attribute in milliseconds"
276
return self._timedelta_to_milliseconds(self.timeout)
448
return timedelta_to_milliseconds(self.timeout)
449
450
def extended_timeout_milliseconds(self):
451
"Return the 'extended_timeout' attribute in milliseconds"
452
return timedelta_to_milliseconds(self.extended_timeout)
277
453
278
454
def interval_milliseconds(self):
279
455
"Return the 'interval' attribute in milliseconds"
280
return self._timedelta_to_milliseconds(self.interval)
456
return timedelta_to_milliseconds(self.interval)
457
458
def approval_delay_milliseconds(self):
459
return timedelta_to_milliseconds(self.approval_delay)
281
460
282
def approved_delay_milliseconds(self):
283
return self._timedelta_to_milliseconds(self.approved_delay)
284
285
def __init__(self, name = None, disable_hook=None, config=None):
461
@staticmethod
462
def config_parser(config):
463
"""Construct a new dict of client settings of this form:
464
{ client_name: {setting_name: value, ...}, ...}
465
with exceptions for any special settings as defined above.
466
NOTE: Must be a pure function. Must return the same result
467
value given the same arguments.
468
"""
469
settings = {}
470
for client_name in config.sections():
471
section = dict(config.items(client_name))
472
client = settings[client_name] = {}
473
474
client["host"] = section["host"]
475
# Reformat values from string types to Python types
476
client["approved_by_default"] = config.getboolean(
477
client_name, "approved_by_default")
478
client["enabled"] = config.getboolean(client_name,
479
"enabled")
480
481
client["fingerprint"] = (section["fingerprint"].upper()
482
.replace(" ", ""))
483
if "secret" in section:
484
client["secret"] = section["secret"].decode("base64")
485
elif "secfile" in section:
486
with open(os.path.expanduser(os.path.expandvars
487
(section["secfile"])),
488
"rb") as secfile:
489
client["secret"] = secfile.read()
490
else:
491
raise TypeError("No secret or secfile for section %s"
492
% section)
493
client["timeout"] = string_to_delta(section["timeout"])
494
client["extended_timeout"] = string_to_delta(
495
section["extended_timeout"])
496
client["interval"] = string_to_delta(section["interval"])
497
client["approval_delay"] = string_to_delta(
498
section["approval_delay"])
499
client["approval_duration"] = string_to_delta(
500
section["approval_duration"])
501
client["checker_command"] = section["checker"]
502
client["last_approval_request"] = None
503
client["last_checked_ok"] = None
504
client["last_checker_status"] = None
505
506
return settings
507
508
509
def __init__(self, settings, name = None):
286
510
"""Note: the 'checker' key in 'config' sets the
287
511
'checker_command' attribute and *not* the 'checker'
288
512
attribute."""
289
513
self.name = name
290
if config is None:
291
config = {}
292
logger.debug(u"Creating client %r", self.name)
514
# adding all client settings
515
for setting, value in settings.iteritems():
516
setattr(self, setting, value)
517
518
if self.enabled:
519
if not hasattr(self, "last_enabled"):
520
self.last_enabled = datetime.datetime.utcnow()
521
if not hasattr(self, "expires"):
522
self.expires = (datetime.datetime.utcnow()
523
+ self.timeout)
524
else:
525
self.last_enabled = None
526
self.expires = None
527
528
logger.debug("Creating client %r", self.name)
293
529
# Uppercase and remove spaces from fingerprint for later
294
530
# comparison purposes with return value from the fingerprint()
295
531
# function
296
self.fingerprint = (config[u"fingerprint"].upper()
297
.replace(u" ", u""))
298
logger.debug(u" Fingerprint: %s", self.fingerprint)
299
if u"secret" in config:
300
self.secret = config[u"secret"].decode(u"base64")
301
elif u"secfile" in config:
302
with open(os.path.expanduser(os.path.expandvars
303
(config[u"secfile"])),
304
"rb") as secfile:
305
self.secret = secfile.read()
306
else:
307
raise TypeError(u"No secret or secfile for client %s"
308
% self.name)
309
self.host = config.get(u"host", u"")
310
self.created = datetime.datetime.utcnow()
311
self.enabled = False
312
self.last_enabled = None
313
self.last_checked_ok = None
314
self.timeout = string_to_delta(config[u"timeout"])
315
self.interval = string_to_delta(config[u"interval"])
316
self.disable_hook = disable_hook
532
logger.debug(" Fingerprint: %s", self.fingerprint)
533
self.created = settings.get("created",
534
datetime.datetime.utcnow())
535
536
# attributes specific for this server instance
317
537
self.checker = None
318
538
self.checker_initiator_tag = None
319
539
self.disable_initiator_tag = None
320
540
self.checker_callback_tag = None
321
self.checker_command = config[u"checker"]
322
541
self.current_checker_command = None
323
self.last_connect = None
324
self._approved = None
325
self.approved_by_default = config.get(u"approved_by_default",
326
True)
542
self.approved = None
327
543
self.approvals_pending = 0
328
self.approved_delay = string_to_delta(
329
config[u"approved_delay"])
330
self.approved_duration = string_to_delta(
331
config[u"approved_duration"])
332
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
544
self.changedstate = (multiprocessing_manager
545
.Condition(multiprocessing_manager
546
.Lock()))
547
self.client_structure = [attr for attr in
548
self.__dict__.iterkeys()
549
if not attr.startswith("_")]
550
self.client_structure.append("client_structure")
551
552
for name, t in inspect.getmembers(type(self),
553
lambda obj:
554
isinstance(obj,
555
property)):
556
if not name.startswith("_"):
557
self.client_structure.append(name)
333
558
559
# Send notice to process children that client state has changed
334
560
def send_changedstate(self):
335
self.changedstate.acquire()
336
self.changedstate.notify_all()
337
self.changedstate.release()
338
561
with self.changedstate:
562
self.changedstate.notify_all()
563
339
564
def enable(self):
340
565
"""Start this client's checker and timeout hooks"""
341
if getattr(self, u"enabled", False):
566
if getattr(self, "enabled", False):
342
567
# Already enabled
343
568
return
344
569
self.send_changedstate()
570
self.expires = datetime.datetime.utcnow() + self.timeout
571
self.enabled = True
345
572
self.last_enabled = datetime.datetime.utcnow()
573
self.init_checker()
574
575
def disable(self, quiet=True):
576
"""Disable this client."""
577
if not getattr(self, "enabled", False):
578
return False
579
if not quiet:
580
self.send_changedstate()
581
if not quiet:
582
logger.info("Disabling client %s", self.name)
583
if getattr(self, "disable_initiator_tag", False):
584
gobject.source_remove(self.disable_initiator_tag)
585
self.disable_initiator_tag = None
586
self.expires = None
587
if getattr(self, "checker_initiator_tag", False):
588
gobject.source_remove(self.checker_initiator_tag)
589
self.checker_initiator_tag = None
590
self.stop_checker()
591
self.enabled = False
592
# Do not run this again if called by a gobject.timeout_add
593
return False
594
595
def __del__(self):
596
self.disable()
597
598
def init_checker(self):
346
599
# Schedule a new checker to be started an 'interval' from now,
347
600
# and every interval from then on.
348
601
self.checker_initiator_tag = (gobject.timeout_add
352
605
self.disable_initiator_tag = (gobject.timeout_add
353
606
(self.timeout_milliseconds(),
354
607
self.disable))
355
self.enabled = True
356
608
# Also start a new checker *right now*.
357
609
self.start_checker()
358
610
359
def disable(self, quiet=True):
360
"""Disable this client."""
361
if not getattr(self, "enabled", False):
362
return False
363
if not quiet:
364
self.send_changedstate()
365
if not quiet:
366
logger.info(u"Disabling client %s", self.name)
367
if getattr(self, u"disable_initiator_tag", False):
368
gobject.source_remove(self.disable_initiator_tag)
369
self.disable_initiator_tag = None
370
if getattr(self, u"checker_initiator_tag", False):
371
gobject.source_remove(self.checker_initiator_tag)
372
self.checker_initiator_tag = None
373
self.stop_checker()
374
if self.disable_hook:
375
self.disable_hook(self)
376
self.enabled = False
377
# Do not run this again if called by a gobject.timeout_add
378
return False
379
380
def __del__(self):
381
self.disable_hook = None
382
self.disable()
383
384
611
def checker_callback(self, pid, condition, command):
385
612
"""The checker has completed, so take appropriate actions."""
386
613
self.checker_callback_tag = None
387
614
self.checker = None
388
615
if os.WIFEXITED(condition):
389
exitstatus = os.WEXITSTATUS(condition)
390
if exitstatus == 0:
391
logger.info(u"Checker for %(name)s succeeded",
616
self.last_checker_status = os.WEXITSTATUS(condition)
617
if self.last_checker_status == 0:
618
logger.info("Checker for %(name)s succeeded",
392
619
vars(self))
393
620
self.checked_ok()
394
621
else:
395
logger.info(u"Checker for %(name)s failed",
622
logger.info("Checker for %(name)s failed",
396
623
vars(self))
397
624
else:
398
logger.warning(u"Checker for %(name)s crashed?",
625
self.last_checker_status = -1
626
logger.warning("Checker for %(name)s crashed?",
399
627
vars(self))
400
628
401
def checked_ok(self):
629
def checked_ok(self, timeout=None):
402
630
"""Bump up the timeout for this client.
403
631
404
632
This should only be called when the client has been seen,
405
633
alive and well.
406
634
"""
635
if timeout is None:
636
timeout = self.timeout
407
637
self.last_checked_ok = datetime.datetime.utcnow()
408
gobject.source_remove(self.disable_initiator_tag)
409
self.disable_initiator_tag = (gobject.timeout_add
410
(self.timeout_milliseconds(),
411
self.disable))
638
if self.disable_initiator_tag is not None:
639
gobject.source_remove(self.disable_initiator_tag)
640
if getattr(self, "enabled", False):
641
self.disable_initiator_tag = (gobject.timeout_add
642
(timedelta_to_milliseconds
643
(timeout), self.disable))
644
self.expires = datetime.datetime.utcnow() + timeout
645
646
def need_approval(self):
647
self.last_approval_request = datetime.datetime.utcnow()
412
648
413
649
def start_checker(self):
414
650
"""Start a new checker subprocess if one is not running.
427
663
# If a checker exists, make sure it is not a zombie
428
664
try:
429
665
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
430
except (AttributeError, OSError), error:
666
except (AttributeError, OSError) as error:
431
667
if (isinstance(error, OSError)
432
668
and error.errno != errno.ECHILD):
433
669
raise error
434
670
else:
435
671
if pid:
436
logger.warning(u"Checker was a zombie")
672
logger.warning("Checker was a zombie")
437
673
gobject.source_remove(self.checker_callback_tag)
438
674
self.checker_callback(pid, status,
439
675
self.current_checker_command)
444
680
command = self.checker_command % self.host
445
681
except TypeError:
446
682
# Escape attributes for the shell
447
escaped_attrs = dict((key,
448
re.escape(unicode(str(val),
449
errors=
450
u'replace')))
451
for key, val in
452
vars(self).iteritems())
683
escaped_attrs = dict(
684
(attr,
685
re.escape(unicode(str(getattr(self, attr, "")),
686
errors=
687
'replace')))
688
for attr in
689
self.runtime_expansions)
690
453
691
try:
454
692
command = self.checker_command % escaped_attrs
455
except TypeError, error:
456
logger.error(u'Could not format string "%s":'
457
u' %s', self.checker_command, error)
693
except TypeError as error:
694
logger.error('Could not format string "%s":'
695
' %s', self.checker_command, error)
458
696
return True # Try again later
459
697
self.current_checker_command = command
460
698
try:
461
logger.info(u"Starting checker %r for %s",
699
logger.info("Starting checker %r for %s",
462
700
command, self.name)
463
701
# We don't need to redirect stdout and stderr, since
464
702
# in normal mode, that is already done by daemon(),
466
704
# always replaced by /dev/null.)
467
705
self.checker = subprocess.Popen(command,
468
706
close_fds=True,
469
shell=True, cwd=u"/")
707
shell=True, cwd="/")
470
708
self.checker_callback_tag = (gobject.child_watch_add
471
709
(self.checker.pid,
472
710
self.checker_callback,
477
715
if pid:
478
716
gobject.source_remove(self.checker_callback_tag)
479
717
self.checker_callback(pid, status, command)
480
except OSError, error:
481
logger.error(u"Failed to start subprocess: %s",
718
except OSError as error:
719
logger.error("Failed to start subprocess: %s",
482
720
error)
483
721
# Re-run this periodically if run by gobject.timeout_add
484
722
return True
488
726
if self.checker_callback_tag:
489
727
gobject.source_remove(self.checker_callback_tag)
490
728
self.checker_callback_tag = None
491
if getattr(self, u"checker", None) is None:
729
if getattr(self, "checker", None) is None:
492
730
return
493
logger.debug(u"Stopping checker for %(name)s", vars(self))
731
logger.debug("Stopping checker for %(name)s", vars(self))
494
732
try:
495
733
os.kill(self.checker.pid, signal.SIGTERM)
496
734
#time.sleep(0.5)
497
735
#if self.checker.poll() is None:
498
736
# os.kill(self.checker.pid, signal.SIGKILL)
499
except OSError, error:
737
except OSError as error:
500
738
if error.errno != errno.ESRCH: # No such process
501
739
raise
502
740
self.checker = None
503
741
504
def dbus_service_property(dbus_interface, signature=u"v",
505
access=u"readwrite", byte_arrays=False):
742
743
def dbus_service_property(dbus_interface, signature="v",
744
access="readwrite", byte_arrays=False):
506
745
"""Decorators for marking methods of a DBusObjectWithProperties to
507
746
become properties on the D-Bus.
508
747
515
754
"""
516
755
# Encoding deeply encoded byte arrays is not supported yet by the
517
756
# "Set" method, so we fail early here:
518
if byte_arrays and signature != u"ay":
519
raise ValueError(u"Byte arrays not supported for non-'ay'"
520
u" signature %r" % signature)
757
if byte_arrays and signature != "ay":
758
raise ValueError("Byte arrays not supported for non-'ay'"
759
" signature %r" % signature)
521
760
def decorator(func):
522
761
func._dbus_is_property = True
523
762
func._dbus_interface = dbus_interface
524
763
func._dbus_signature = signature
525
764
func._dbus_access = access
526
765
func._dbus_name = func.__name__
527
if func._dbus_name.endswith(u"_dbus_property"):
766
if func._dbus_name.endswith("_dbus_property"):
528
767
func._dbus_name = func._dbus_name[:-14]
529
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
768
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
530
769
return func
531
770
return decorator
532
771
552
791
553
792
class DBusObjectWithProperties(dbus.service.Object):
554
793
"""A D-Bus object with properties.
555
794
556
795
Classes inheriting from this can use the dbus_service_property
557
796
decorator to expose methods as D-Bus properties. It exposes the
558
797
standard Get(), Set(), and GetAll() methods on the D-Bus.
560
799
561
800
@staticmethod
562
801
def _is_dbus_property(obj):
563
return getattr(obj, u"_dbus_is_property", False)
802
return getattr(obj, "_dbus_is_property", False)
564
803
565
804
def _get_all_dbus_properties(self):
566
805
"""Returns a generator of (name, attribute) pairs
567
806
"""
568
return ((prop._dbus_name, prop)
807
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
808
for cls in self.__class__.__mro__
569
809
for name, prop in
570
inspect.getmembers(self, self._is_dbus_property))
810
inspect.getmembers(cls, self._is_dbus_property))
571
811
572
812
def _get_dbus_property(self, interface_name, property_name):
573
813
"""Returns a bound method if one exists which is a D-Bus
574
814
property with the specified name and interface.
575
815
"""
576
for name in (property_name,
577
property_name + u"_dbus_property"):
578
prop = getattr(self, name, None)
579
if (prop is None
580
or not self._is_dbus_property(prop)
581
or prop._dbus_name != property_name
582
or (interface_name and prop._dbus_interface
583
and interface_name != prop._dbus_interface)):
584
continue
585
return prop
816
for cls in self.__class__.__mro__:
817
for name, value in (inspect.getmembers
818
(cls, self._is_dbus_property)):
819
if (value._dbus_name == property_name
820
and value._dbus_interface == interface_name):
821
return value.__get__(self)
822
586
823
# No such property
587
raise DBusPropertyNotFound(self.dbus_object_path + u":"
588
+ interface_name + u"."
824
raise DBusPropertyNotFound(self.dbus_object_path + ":"
825
+ interface_name + "."
589
826
+ property_name)
590
827
591
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
592
out_signature=u"v")
828
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
829
out_signature="v")
593
830
def Get(self, interface_name, property_name):
594
831
"""Standard D-Bus property Get() method, see D-Bus standard.
595
832
"""
596
833
prop = self._get_dbus_property(interface_name, property_name)
597
if prop._dbus_access == u"write":
834
if prop._dbus_access == "write":
598
835
raise DBusPropertyAccessException(property_name)
599
836
value = prop()
600
if not hasattr(value, u"variant_level"):
837
if not hasattr(value, "variant_level"):
601
838
return value
602
839
return type(value)(value, variant_level=value.variant_level+1)
603
840
604
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
841
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
605
842
def Set(self, interface_name, property_name, value):
606
843
"""Standard D-Bus property Set() method, see D-Bus standard.
607
844
"""
608
845
prop = self._get_dbus_property(interface_name, property_name)
609
if prop._dbus_access == u"read":
846
if prop._dbus_access == "read":
610
847
raise DBusPropertyAccessException(property_name)
611
if prop._dbus_get_args_options[u"byte_arrays"]:
848
if prop._dbus_get_args_options["byte_arrays"]:
612
849
# The byte_arrays option is not supported yet on
613
850
# signatures other than "ay".
614
if prop._dbus_signature != u"ay":
851
if prop._dbus_signature != "ay":
615
852
raise ValueError
616
value = dbus.ByteArray(''.join(unichr(byte)
617
for byte in value))
853
value = dbus.ByteArray(b''.join(chr(byte)
854
for byte in value))
618
855
prop(value)
619
856
620
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
621
out_signature=u"a{sv}")
857
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
858
out_signature="a{sv}")
622
859
def GetAll(self, interface_name):
623
860
"""Standard D-Bus property GetAll() method, see D-Bus
624
861
standard.
625
862
626
863
Note: Will not include properties with access="write".
627
864
"""
628
all = {}
865
properties = {}
629
866
for name, prop in self._get_all_dbus_properties():
630
867
if (interface_name
631
868
and interface_name != prop._dbus_interface):
632
869
# Interface non-empty but did not match
633
870
continue
634
871
# Ignore write-only properties
635
if prop._dbus_access == u"write":
872
if prop._dbus_access == "write":
636
873
continue
637
874
value = prop()
638
if not hasattr(value, u"variant_level"):
639
all[name] = value
875
if not hasattr(value, "variant_level"):
876
properties[name] = value
640
877
continue
641
all[name] = type(value)(value, variant_level=
642
value.variant_level+1)
643
return dbus.Dictionary(all, signature=u"sv")
878
properties[name] = type(value)(value, variant_level=
879
value.variant_level+1)
880
return dbus.Dictionary(properties, signature="sv")
644
881
645
882
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
646
out_signature=u"s",
883
out_signature="s",
647
884
path_keyword='object_path',
648
885
connection_keyword='connection')
649
886
def Introspect(self, object_path, connection):
654
891
try:
655
892
document = xml.dom.minidom.parseString(xmlstring)
656
893
def make_tag(document, name, prop):
657
e = document.createElement(u"property")
658
e.setAttribute(u"name", name)
659
e.setAttribute(u"type", prop._dbus_signature)
660
e.setAttribute(u"access", prop._dbus_access)
894
e = document.createElement("property")
895
e.setAttribute("name", name)
896
e.setAttribute("type", prop._dbus_signature)
897
e.setAttribute("access", prop._dbus_access)
661
898
return e
662
for if_tag in document.getElementsByTagName(u"interface"):
899
for if_tag in document.getElementsByTagName("interface"):
663
900
for tag in (make_tag(document, name, prop)
664
901
for name, prop
665
902
in self._get_all_dbus_properties()
666
903
if prop._dbus_interface
667
== if_tag.getAttribute(u"name")):
904
== if_tag.getAttribute("name")):
668
905
if_tag.appendChild(tag)
669
906
# Add the names to the return values for the
670
907
# "org.freedesktop.DBus.Properties" methods
671
if (if_tag.getAttribute(u"name")
672
== u"org.freedesktop.DBus.Properties"):
673
for cn in if_tag.getElementsByTagName(u"method"):
674
if cn.getAttribute(u"name") == u"Get":
675
for arg in cn.getElementsByTagName(u"arg"):
676
if (arg.getAttribute(u"direction")
677
== u"out"):
678
arg.setAttribute(u"name", u"value")
679
elif cn.getAttribute(u"name") == u"GetAll":
680
for arg in cn.getElementsByTagName(u"arg"):
681
if (arg.getAttribute(u"direction")
682
== u"out"):
683
arg.setAttribute(u"name", u"props")
684
xmlstring = document.toxml(u"utf-8")
908
if (if_tag.getAttribute("name")
909
== "org.freedesktop.DBus.Properties"):
910
for cn in if_tag.getElementsByTagName("method"):
911
if cn.getAttribute("name") == "Get":
912
for arg in cn.getElementsByTagName("arg"):
913
if (arg.getAttribute("direction")
914
== "out"):
915
arg.setAttribute("name", "value")
916
elif cn.getAttribute("name") == "GetAll":
917
for arg in cn.getElementsByTagName("arg"):
918
if (arg.getAttribute("direction")
919
== "out"):
920
arg.setAttribute("name", "props")
921
xmlstring = document.toxml("utf-8")
685
922
document.unlink()
686
923
except (AttributeError, xml.dom.DOMException,
687
xml.parsers.expat.ExpatError), error:
688
logger.error(u"Failed to override Introspection method",
924
xml.parsers.expat.ExpatError) as error:
925
logger.error("Failed to override Introspection method",
689
926
error)
690
927
return xmlstring
691
928
692
929
930
def datetime_to_dbus (dt, variant_level=0):
931
"""Convert a UTC datetime.datetime() to a D-Bus type."""
932
if dt is None:
933
return dbus.String("", variant_level = variant_level)
934
return dbus.String(dt.isoformat(),
935
variant_level=variant_level)
936
937
938
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
939
.__metaclass__):
940
"""Applied to an empty subclass of a D-Bus object, this metaclass
941
will add additional D-Bus attributes matching a certain pattern.
942
"""
943
def __new__(mcs, name, bases, attr):
944
# Go through all the base classes which could have D-Bus
945
# methods, signals, or properties in them
946
for base in (b for b in bases
947
if issubclass(b, dbus.service.Object)):
948
# Go though all attributes of the base class
949
for attrname, attribute in inspect.getmembers(base):
950
# Ignore non-D-Bus attributes, and D-Bus attributes
951
# with the wrong interface name
952
if (not hasattr(attribute, "_dbus_interface")
953
or not attribute._dbus_interface
954
.startswith("se.recompile.Mandos")):
955
continue
956
# Create an alternate D-Bus interface name based on
957
# the current name
958
alt_interface = (attribute._dbus_interface
959
.replace("se.recompile.Mandos",
960
"se.bsnet.fukt.Mandos"))
961
# Is this a D-Bus signal?
962
if getattr(attribute, "_dbus_is_signal", False):
963
# Extract the original non-method function by
964
# black magic
965
nonmethod_func = (dict(
966
zip(attribute.func_code.co_freevars,
967
attribute.__closure__))["func"]
968
.cell_contents)
969
# Create a new, but exactly alike, function
970
# object, and decorate it to be a new D-Bus signal
971
# with the alternate D-Bus interface name
972
new_function = (dbus.service.signal
973
(alt_interface,
974
attribute._dbus_signature)
975
(types.FunctionType(
976
nonmethod_func.func_code,
977
nonmethod_func.func_globals,
978
nonmethod_func.func_name,
979
nonmethod_func.func_defaults,
980
nonmethod_func.func_closure)))
981
# Define a creator of a function to call both the
982
# old and new functions, so both the old and new
983
# signals gets sent when the function is called
984
def fixscope(func1, func2):
985
"""This function is a scope container to pass
986
func1 and func2 to the "call_both" function
987
outside of its arguments"""
988
def call_both(*args, **kwargs):
989
"""This function will emit two D-Bus
990
signals by calling func1 and func2"""
991
func1(*args, **kwargs)
992
func2(*args, **kwargs)
993
return call_both
994
# Create the "call_both" function and add it to
995
# the class
996
attr[attrname] = fixscope(attribute,
997
new_function)
998
# Is this a D-Bus method?
999
elif getattr(attribute, "_dbus_is_method", False):
1000
# Create a new, but exactly alike, function
1001
# object. Decorate it to be a new D-Bus method
1002
# with the alternate D-Bus interface name. Add it
1003
# to the class.
1004
attr[attrname] = (dbus.service.method
1005
(alt_interface,
1006
attribute._dbus_in_signature,
1007
attribute._dbus_out_signature)
1008
(types.FunctionType
1009
(attribute.func_code,
1010
attribute.func_globals,
1011
attribute.func_name,
1012
attribute.func_defaults,
1013
attribute.func_closure)))
1014
# Is this a D-Bus property?
1015
elif getattr(attribute, "_dbus_is_property", False):
1016
# Create a new, but exactly alike, function
1017
# object, and decorate it to be a new D-Bus
1018
# property with the alternate D-Bus interface
1019
# name. Add it to the class.
1020
attr[attrname] = (dbus_service_property
1021
(alt_interface,
1022
attribute._dbus_signature,
1023
attribute._dbus_access,
1024
attribute
1025
._dbus_get_args_options
1026
["byte_arrays"])
1027
(types.FunctionType
1028
(attribute.func_code,
1029
attribute.func_globals,
1030
attribute.func_name,
1031
attribute.func_defaults,
1032
attribute.func_closure)))
1033
return type.__new__(mcs, name, bases, attr)
1034
1035
693
1036
class ClientDBus(Client, DBusObjectWithProperties):
694
1037
"""A Client class using D-Bus
695
1038
697
1040
dbus_object_path: dbus.ObjectPath
698
1041
bus: dbus.SystemBus()
699
1042
"""
1043
1044
runtime_expansions = (Client.runtime_expansions
1045
+ ("dbus_object_path",))
1046
700
1047
# dbus.service.Object doesn't use super(), so we can't either.
701
1048
702
1049
def __init__(self, bus = None, *args, **kwargs):
703
self._approvals_pending = 0
704
1050
self.bus = bus
705
1051
Client.__init__(self, *args, **kwargs)
706
1052
# Only now, when this client is initialized, can it show up on
707
1053
# the D-Bus
1054
client_object_name = unicode(self.name).translate(
1055
{ord("."): ord("_"),
1056
ord("-"): ord("_")})
708
1057
self.dbus_object_path = (dbus.ObjectPath
709
(u"/clients/"
710
+ self.name.replace(u".", u"_")))
1058
("/clients/" + client_object_name))
711
1059
DBusObjectWithProperties.__init__(self, self.bus,
712
1060
self.dbus_object_path)
713
714
def _get_approvals_pending(self):
715
return self._approvals_pending
716
def _set_approvals_pending(self, value):
717
old_value = self._approvals_pending
718
self._approvals_pending = value
719
bval = bool(value)
720
if (hasattr(self, "dbus_object_path")
721
and bval is not bool(old_value)):
722
dbus_bool = dbus.Boolean(bval, variant_level=1)
723
self.PropertyChanged(dbus.String(u"approved_pending"),
724
dbus_bool)
725
726
approvals_pending = property(_get_approvals_pending,
727
_set_approvals_pending)
728
del _get_approvals_pending, _set_approvals_pending
729
730
@staticmethod
731
def _datetime_to_dbus(dt, variant_level=0):
732
"""Convert a UTC datetime.datetime() to a D-Bus type."""
733
return dbus.String(dt.isoformat(),
734
variant_level=variant_level)
735
736
def enable(self):
737
oldstate = getattr(self, u"enabled", False)
738
r = Client.enable(self)
739
if oldstate != self.enabled:
740
# Emit D-Bus signals
741
self.PropertyChanged(dbus.String(u"enabled"),
742
dbus.Boolean(True, variant_level=1))
743
self.PropertyChanged(
744
dbus.String(u"last_enabled"),
745
self._datetime_to_dbus(self.last_enabled,
746
variant_level=1))
747
return r
748
749
def disable(self, quiet = False):
750
oldstate = getattr(self, u"enabled", False)
751
r = Client.disable(self, quiet=quiet)
752
if not quiet and oldstate != self.enabled:
753
# Emit D-Bus signal
754
self.PropertyChanged(dbus.String(u"enabled"),
755
dbus.Boolean(False, variant_level=1))
756
return r
1061
1062
def notifychangeproperty(transform_func,
1063
dbus_name, type_func=lambda x: x,
1064
variant_level=1):
1065
""" Modify a variable so that it's a property which announces
1066
its changes to DBus.
1067
1068
transform_fun: Function that takes a value and a variant_level
1069
and transforms it to a D-Bus type.
1070
dbus_name: D-Bus name of the variable
1071
type_func: Function that transform the value before sending it
1072
to the D-Bus. Default: no transform
1073
variant_level: D-Bus variant level. Default: 1
1074
"""
1075
attrname = "_{0}".format(dbus_name)
1076
def setter(self, value):
1077
if hasattr(self, "dbus_object_path"):
1078
if (not hasattr(self, attrname) or
1079
type_func(getattr(self, attrname, None))
1080
!= type_func(value)):
1081
dbus_value = transform_func(type_func(value),
1082
variant_level
1083
=variant_level)
1084
self.PropertyChanged(dbus.String(dbus_name),
1085
dbus_value)
1086
setattr(self, attrname, value)
1087
1088
return property(lambda self: getattr(self, attrname), setter)
1089
1090
1091
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1092
approvals_pending = notifychangeproperty(dbus.Boolean,
1093
"ApprovalPending",
1094
type_func = bool)
1095
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1096
last_enabled = notifychangeproperty(datetime_to_dbus,
1097
"LastEnabled")
1098
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1099
type_func = lambda checker:
1100
checker is not None)
1101
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1102
"LastCheckedOK")
1103
last_approval_request = notifychangeproperty(
1104
datetime_to_dbus, "LastApprovalRequest")
1105
approved_by_default = notifychangeproperty(dbus.Boolean,
1106
"ApprovedByDefault")
1107
approval_delay = notifychangeproperty(dbus.UInt64,
1108
"ApprovalDelay",
1109
type_func =
1110
timedelta_to_milliseconds)
1111
approval_duration = notifychangeproperty(
1112
dbus.UInt64, "ApprovalDuration",
1113
type_func = timedelta_to_milliseconds)
1114
host = notifychangeproperty(dbus.String, "Host")
1115
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1116
type_func =
1117
timedelta_to_milliseconds)
1118
extended_timeout = notifychangeproperty(
1119
dbus.UInt64, "ExtendedTimeout",
1120
type_func = timedelta_to_milliseconds)
1121
interval = notifychangeproperty(dbus.UInt64,
1122
"Interval",
1123
type_func =
1124
timedelta_to_milliseconds)
1125
checker_command = notifychangeproperty(dbus.String, "Checker")
1126
1127
del notifychangeproperty
757
1128
758
1129
def __del__(self, *args, **kwargs):
759
1130
try:
760
1131
self.remove_from_connection()
761
1132
except LookupError:
762
1133
pass
763
if hasattr(DBusObjectWithProperties, u"__del__"):
1134
if hasattr(DBusObjectWithProperties, "__del__"):
764
1135
DBusObjectWithProperties.__del__(self, *args, **kwargs)
765
1136
Client.__del__(self, *args, **kwargs)
766
1137
768
1139
*args, **kwargs):
769
1140
self.checker_callback_tag = None
770
1141
self.checker = None
771
# Emit D-Bus signal
772
self.PropertyChanged(dbus.String(u"checker_running"),
773
dbus.Boolean(False, variant_level=1))
774
1142
if os.WIFEXITED(condition):
775
1143
exitstatus = os.WEXITSTATUS(condition)
776
1144
# Emit D-Bus signal
786
1154
return Client.checker_callback(self, pid, condition, command,
787
1155
*args, **kwargs)
788
1156
789
def checked_ok(self, *args, **kwargs):
790
r = Client.checked_ok(self, *args, **kwargs)
791
# Emit D-Bus signal
792
self.PropertyChanged(
793
dbus.String(u"last_checked_ok"),
794
(self._datetime_to_dbus(self.last_checked_ok,
795
variant_level=1)))
796
return r
797
798
1157
def start_checker(self, *args, **kwargs):
799
1158
old_checker = self.checker
800
1159
if self.checker is not None:
807
1166
and old_checker_pid != self.checker.pid):
808
1167
# Emit D-Bus signal
809
1168
self.CheckerStarted(self.current_checker_command)
810
self.PropertyChanged(
811
dbus.String(u"checker_running"),
812
dbus.Boolean(True, variant_level=1))
813
1169
return r
814
1170
815
def stop_checker(self, *args, **kwargs):
816
old_checker = getattr(self, u"checker", None)
817
r = Client.stop_checker(self, *args, **kwargs)
818
if (old_checker is not None
819
and getattr(self, u"checker", None) is None):
820
self.PropertyChanged(dbus.String(u"checker_running"),
821
dbus.Boolean(False, variant_level=1))
822
return r
823
824
1171
def _reset_approved(self):
825
self._approved = None
1172
self.approved = None
826
1173
return False
827
1174
828
1175
def approve(self, value=True):
829
1176
self.send_changedstate()
830
self._approved = value
831
gobject.timeout_add(self._timedelta_to_milliseconds(self.approved_duration),
1177
self.approved = value
1178
gobject.timeout_add(timedelta_to_milliseconds
1179
(self.approval_duration),
832
1180
self._reset_approved)
833
1181
834
1182
835
1183
## D-Bus methods, signals & properties
836
_interface = u"se.bsnet.fukt.Mandos.Client"
1184
_interface = "se.recompile.Mandos.Client"
837
1185
838
1186
## Signals
839
1187
840
1188
# CheckerCompleted - signal
841
@dbus.service.signal(_interface, signature=u"nxs")
1189
@dbus.service.signal(_interface, signature="nxs")
842
1190
def CheckerCompleted(self, exitcode, waitstatus, command):
843
1191
"D-Bus signal"
844
1192
pass
845
1193
846
1194
# CheckerStarted - signal
847
@dbus.service.signal(_interface, signature=u"s")
1195
@dbus.service.signal(_interface, signature="s")
848
1196
def CheckerStarted(self, command):
849
1197
"D-Bus signal"
850
1198
pass
851
1199
852
1200
# PropertyChanged - signal
853
@dbus.service.signal(_interface, signature=u"sv")
1201
@dbus.service.signal(_interface, signature="sv")
854
1202
def PropertyChanged(self, property, value):
855
1203
"D-Bus signal"
856
1204
pass
865
1213
pass
866
1214
867
1215
# Rejected - signal
868
@dbus.service.signal(_interface, signature=u"s")
1216
@dbus.service.signal(_interface, signature="s")
869
1217
def Rejected(self, reason):
870
1218
"D-Bus signal"
871
1219
pass
872
1220
873
1221
# NeedApproval - signal
874
@dbus.service.signal(_interface, signature=u"db")
1222
@dbus.service.signal(_interface, signature="tb")
875
1223
def NeedApproval(self, timeout, default):
876
1224
"D-Bus signal"
877
pass
1225
return self.need_approval()
878
1226
879
1227
## Methods
880
1228
881
1229
# Approve - method
882
@dbus.service.method(_interface, in_signature=u"b")
1230
@dbus.service.method(_interface, in_signature="b")
883
1231
def Approve(self, value):
884
1232
self.approve(value)
885
1233
886
1234
# CheckedOK - method
887
1235
@dbus.service.method(_interface)
888
1236
def CheckedOK(self):
889
return self.checked_ok()
1237
self.checked_ok()
890
1238
891
1239
# Enable - method
892
1240
@dbus.service.method(_interface)
913
1261
914
1262
## Properties
915
1263
916
# approved_pending - property
917
@dbus_service_property(_interface, signature=u"b", access=u"read")
918
def approved_pending_dbus_property(self):
1264
# ApprovalPending - property
1265
@dbus_service_property(_interface, signature="b", access="read")
1266
def ApprovalPending_dbus_property(self):
919
1267
return dbus.Boolean(bool(self.approvals_pending))
920
1268
921
# approved_by_default - property
922
@dbus_service_property(_interface, signature=u"b",
923
access=u"readwrite")
924
def approved_by_default_dbus_property(self):
925
return dbus.Boolean(self.approved_by_default)
926
927
# approved_delay - property
928
@dbus_service_property(_interface, signature=u"t",
929
access=u"readwrite")
930
def approved_delay_dbus_property(self):
931
return dbus.UInt64(self.approved_delay_milliseconds())
932
933
# approved_duration - property
934
@dbus_service_property(_interface, signature=u"t",
935
access=u"readwrite")
936
def approved_duration_dbus_property(self):
937
return dbus.UInt64(self._timedelta_to_milliseconds(
938
self.approved_duration))
939
940
# name - property
941
@dbus_service_property(_interface, signature=u"s", access=u"read")
942
def name_dbus_property(self):
1269
# ApprovedByDefault - property
1270
@dbus_service_property(_interface, signature="b",
1271
access="readwrite")
1272
def ApprovedByDefault_dbus_property(self, value=None):
1273
if value is None: # get
1274
return dbus.Boolean(self.approved_by_default)
1275
self.approved_by_default = bool(value)
1276
1277
# ApprovalDelay - property
1278
@dbus_service_property(_interface, signature="t",
1279
access="readwrite")
1280
def ApprovalDelay_dbus_property(self, value=None):
1281
if value is None: # get
1282
return dbus.UInt64(self.approval_delay_milliseconds())
1283
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1284
1285
# ApprovalDuration - property
1286
@dbus_service_property(_interface, signature="t",
1287
access="readwrite")
1288
def ApprovalDuration_dbus_property(self, value=None):
1289
if value is None: # get
1290
return dbus.UInt64(timedelta_to_milliseconds(
1291
self.approval_duration))
1292
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1293
1294
# Name - property
1295
@dbus_service_property(_interface, signature="s", access="read")
1296
def Name_dbus_property(self):
943
1297
return dbus.String(self.name)
944
1298
945
# fingerprint - property
946
@dbus_service_property(_interface, signature=u"s", access=u"read")
947
def fingerprint_dbus_property(self):
1299
# Fingerprint - property
1300
@dbus_service_property(_interface, signature="s", access="read")
1301
def Fingerprint_dbus_property(self):
948
1302
return dbus.String(self.fingerprint)
949
1303
950
# host - property
951
@dbus_service_property(_interface, signature=u"s",
952
access=u"readwrite")
953
def host_dbus_property(self, value=None):
1304
# Host - property
1305
@dbus_service_property(_interface, signature="s",
1306
access="readwrite")
1307
def Host_dbus_property(self, value=None):
954
1308
if value is None: # get
955
1309
return dbus.String(self.host)
956
self.host = value
957
# Emit D-Bus signal
958
self.PropertyChanged(dbus.String(u"host"),
959
dbus.String(value, variant_level=1))
960
961
# created - property
962
@dbus_service_property(_interface, signature=u"s", access=u"read")
963
def created_dbus_property(self):
964
return dbus.String(self._datetime_to_dbus(self.created))
965
966
# last_enabled - property
967
@dbus_service_property(_interface, signature=u"s", access=u"read")
968
def last_enabled_dbus_property(self):
969
if self.last_enabled is None:
970
return dbus.String(u"")
971
return dbus.String(self._datetime_to_dbus(self.last_enabled))
972
973
# enabled - property
974
@dbus_service_property(_interface, signature=u"b",
975
access=u"readwrite")
976
def enabled_dbus_property(self, value=None):
1310
self.host = unicode(value)
1311
1312
# Created - property
1313
@dbus_service_property(_interface, signature="s", access="read")
1314
def Created_dbus_property(self):
1315
return datetime_to_dbus(self.created)
1316
1317
# LastEnabled - property
1318
@dbus_service_property(_interface, signature="s", access="read")
1319
def LastEnabled_dbus_property(self):
1320
return datetime_to_dbus(self.last_enabled)
1321
1322
# Enabled - property
1323
@dbus_service_property(_interface, signature="b",
1324
access="readwrite")
1325
def Enabled_dbus_property(self, value=None):
977
1326
if value is None: # get
978
1327
return dbus.Boolean(self.enabled)
979
1328
if value:
981
1330
else:
982
1331
self.disable()
983
1332
984
# last_checked_ok - property
985
@dbus_service_property(_interface, signature=u"s",
986
access=u"readwrite")
987
def last_checked_ok_dbus_property(self, value=None):
1333
# LastCheckedOK - property
1334
@dbus_service_property(_interface, signature="s",
1335
access="readwrite")
1336
def LastCheckedOK_dbus_property(self, value=None):
988
1337
if value is not None:
989
1338
self.checked_ok()
990
1339
return
991
if self.last_checked_ok is None:
992
return dbus.String(u"")
993
return dbus.String(self._datetime_to_dbus(self
994
.last_checked_ok))
995
996
# timeout - property
997
@dbus_service_property(_interface, signature=u"t",
998
access=u"readwrite")
999
def timeout_dbus_property(self, value=None):
1340
return datetime_to_dbus(self.last_checked_ok)
1341
1342
# Expires - property
1343
@dbus_service_property(_interface, signature="s", access="read")
1344
def Expires_dbus_property(self):
1345
return datetime_to_dbus(self.expires)
1346
1347
# LastApprovalRequest - property
1348
@dbus_service_property(_interface, signature="s", access="read")
1349
def LastApprovalRequest_dbus_property(self):
1350
return datetime_to_dbus(self.last_approval_request)
1351
1352
# Timeout - property
1353
@dbus_service_property(_interface, signature="t",
1354
access="readwrite")
1355
def Timeout_dbus_property(self, value=None):
1000
1356
if value is None: # get
1001
1357
return dbus.UInt64(self.timeout_milliseconds())
1002
1358
self.timeout = datetime.timedelta(0, 0, 0, value)
1003
# Emit D-Bus signal
1004
self.PropertyChanged(dbus.String(u"timeout"),
1005
dbus.UInt64(value, variant_level=1))
1006
if getattr(self, u"disable_initiator_tag", None) is None:
1007
return
1008
1359
# Reschedule timeout
1009
gobject.source_remove(self.disable_initiator_tag)
1010
self.disable_initiator_tag = None
1011
time_to_die = (self.
1012
_timedelta_to_milliseconds((self
1013
.last_checked_ok
1014
+ self.timeout)
1015
- datetime.datetime
1016
.utcnow()))
1017
if time_to_die <= 0:
1018
# The timeout has passed
1019
self.disable()
1020
else:
1021
self.disable_initiator_tag = (gobject.timeout_add
1022
(time_to_die, self.disable))
1023
1024
# interval - property
1025
@dbus_service_property(_interface, signature=u"t",
1026
access=u"readwrite")
1027
def interval_dbus_property(self, value=None):
1360
if self.enabled:
1361
now = datetime.datetime.utcnow()
1362
time_to_die = timedelta_to_milliseconds(
1363
(self.last_checked_ok + self.timeout) - now)
1364
if time_to_die <= 0:
1365
# The timeout has passed
1366
self.disable()
1367
else:
1368
self.expires = (now +
1369
datetime.timedelta(milliseconds =
1370
time_to_die))
1371
if (getattr(self, "disable_initiator_tag", None)
1372
is None):
1373
return
1374
gobject.source_remove(self.disable_initiator_tag)
1375
self.disable_initiator_tag = (gobject.timeout_add
1376
(time_to_die,
1377
self.disable))
1378
1379
# ExtendedTimeout - property
1380
@dbus_service_property(_interface, signature="t",
1381
access="readwrite")
1382
def ExtendedTimeout_dbus_property(self, value=None):
1383
if value is None: # get
1384
return dbus.UInt64(self.extended_timeout_milliseconds())
1385
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1386
1387
# Interval - property
1388
@dbus_service_property(_interface, signature="t",
1389
access="readwrite")
1390
def Interval_dbus_property(self, value=None):
1028
1391
if value is None: # get
1029
1392
return dbus.UInt64(self.interval_milliseconds())
1030
1393
self.interval = datetime.timedelta(0, 0, 0, value)
1031
# Emit D-Bus signal
1032
self.PropertyChanged(dbus.String(u"interval"),
1033
dbus.UInt64(value, variant_level=1))
1034
if getattr(self, u"checker_initiator_tag", None) is None:
1394
if getattr(self, "checker_initiator_tag", None) is None:
1035
1395
return
1036
# Reschedule checker run
1037
gobject.source_remove(self.checker_initiator_tag)
1038
self.checker_initiator_tag = (gobject.timeout_add
1039
(value, self.start_checker))
1040
self.start_checker() # Start one now, too
1041
1042
# checker - property
1043
@dbus_service_property(_interface, signature=u"s",
1044
access=u"readwrite")
1045
def checker_dbus_property(self, value=None):
1396
if self.enabled:
1397
# Reschedule checker run
1398
gobject.source_remove(self.checker_initiator_tag)
1399
self.checker_initiator_tag = (gobject.timeout_add
1400
(value, self.start_checker))
1401
self.start_checker() # Start one now, too
1402
1403
# Checker - property
1404
@dbus_service_property(_interface, signature="s",
1405
access="readwrite")
1406
def Checker_dbus_property(self, value=None):
1046
1407
if value is None: # get
1047
1408
return dbus.String(self.checker_command)
1048
self.checker_command = value
1049
# Emit D-Bus signal
1050
self.PropertyChanged(dbus.String(u"checker"),
1051
dbus.String(self.checker_command,
1052
variant_level=1))
1409
self.checker_command = unicode(value)
1053
1410
1054
# checker_running - property
1055
@dbus_service_property(_interface, signature=u"b",
1056
access=u"readwrite")
1057
def checker_running_dbus_property(self, value=None):
1411
# CheckerRunning - property
1412
@dbus_service_property(_interface, signature="b",
1413
access="readwrite")
1414
def CheckerRunning_dbus_property(self, value=None):
1058
1415
if value is None: # get
1059
1416
return dbus.Boolean(self.checker is not None)
1060
1417
if value:
1062
1419
else:
1063
1420
self.stop_checker()
1064
1421
1065
# object_path - property
1066
@dbus_service_property(_interface, signature=u"o", access=u"read")
1067
def object_path_dbus_property(self):
1422
# ObjectPath - property
1423
@dbus_service_property(_interface, signature="o", access="read")
1424
def ObjectPath_dbus_property(self):
1068
1425
return self.dbus_object_path # is already a dbus.ObjectPath
1069
1426
1070
# secret = property
1071
@dbus_service_property(_interface, signature=u"ay",
1072
access=u"write", byte_arrays=True)
1073
def secret_dbus_property(self, value):
1427
# Secret = property
1428
@dbus_service_property(_interface, signature="ay",
1429
access="write", byte_arrays=True)
1430
def Secret_dbus_property(self, value):
1074
1431
self.secret = str(value)
1075
1432
1076
1433
del _interface
1082
1439
self._pipe.send(('init', fpr, address))
1083
1440
if not self._pipe.recv():
1084
1441
raise KeyError()
1085
1442
1086
1443
def __getattribute__(self, name):
1087
if(name == '_pipe'):
1444
if name == '_pipe':
1088
1445
return super(ProxyClient, self).__getattribute__(name)
1089
1446
self._pipe.send(('getattr', name))
1090
1447
data = self._pipe.recv()
1095
1452
self._pipe.send(('funcall', name, args, kwargs))
1096
1453
return self._pipe.recv()[1]
1097
1454
return func
1098
1455
1099
1456
def __setattr__(self, name, value):
1100
if(name == '_pipe'):
1457
if name == '_pipe':
1101
1458
return super(ProxyClient, self).__setattr__(name, value)
1102
1459
self._pipe.send(('setattr', name, value))
1103
1460
1104
1461
1462
class ClientDBusTransitional(ClientDBus):
1463
__metaclass__ = AlternateDBusNamesMetaclass
1464
1465
1105
1466
class ClientHandler(socketserver.BaseRequestHandler, object):
1106
1467
"""A class to handle client connections.
1107
1468
1110
1471
1111
1472
def handle(self):
1112
1473
with contextlib.closing(self.server.child_pipe) as child_pipe:
1113
logger.info(u"TCP connection from: %s",
1474
logger.info("TCP connection from: %s",
1114
1475
unicode(self.client_address))
1115
logger.debug(u"Pipe FD: %d",
1476
logger.debug("Pipe FD: %d",
1116
1477
self.server.child_pipe.fileno())
1117
1478
1118
1479
session = (gnutls.connection
1119
1480
.ClientSession(self.request,
1120
1481
gnutls.connection
1121
1482
.X509Credentials()))
1122
1483
1123
1484
# Note: gnutls.connection.X509Credentials is really a
1124
1485
# generic GnuTLS certificate credentials object so long as
1125
1486
# no X.509 keys are added to it. Therefore, we can use it
1126
1487
# here despite using OpenPGP certificates.
1127
1128
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1129
# u"+AES-256-CBC", u"+SHA1",
1130
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1131
# u"+DHE-DSS"))
1488
1489
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1490
# "+AES-256-CBC", "+SHA1",
1491
# "+COMP-NULL", "+CTYPE-OPENPGP",
1492
# "+DHE-DSS"))
1132
1493
# Use a fallback default, since this MUST be set.
1133
1494
priority = self.server.gnutls_priority
1134
1495
if priority is None:
1135
priority = u"NORMAL"
1496
priority = "NORMAL"
1136
1497
(gnutls.library.functions
1137
1498
.gnutls_priority_set_direct(session._c_object,
1138
1499
priority, None))
1139
1500
1140
1501
# Start communication using the Mandos protocol
1141
1502
# Get protocol number
1142
1503
line = self.request.makefile().readline()
1143
logger.debug(u"Protocol version: %r", line)
1504
logger.debug("Protocol version: %r", line)
1144
1505
try:
1145
1506
if int(line.strip().split()[0]) > 1:
1146
1507
raise RuntimeError
1147
except (ValueError, IndexError, RuntimeError), error:
1148
logger.error(u"Unknown protocol version: %s", error)
1508
except (ValueError, IndexError, RuntimeError) as error:
1509
logger.error("Unknown protocol version: %s", error)
1149
1510
return
1150
1511
1151
1512
# Start GnuTLS connection
1152
1513
try:
1153
1514
session.handshake()
1154
except gnutls.errors.GNUTLSError, error:
1155
logger.warning(u"Handshake failed: %s", error)
1515
except gnutls.errors.GNUTLSError as error:
1516
logger.warning("Handshake failed: %s", error)
1156
1517
# Do not run session.bye() here: the session is not
1157
1518
# established. Just abandon the request.
1158
1519
return
1159
logger.debug(u"Handshake succeeded")
1160
1520
logger.debug("Handshake succeeded")
1521
1161
1522
approval_required = False
1162
1523
try:
1163
1524
try:
1164
1525
fpr = self.fingerprint(self.peer_certificate
1165
1526
(session))
1166
except (TypeError, gnutls.errors.GNUTLSError), error:
1167
logger.warning(u"Bad certificate: %s", error)
1527
except (TypeError,
1528
gnutls.errors.GNUTLSError) as error:
1529
logger.warning("Bad certificate: %s", error)
1168
1530
return
1169
logger.debug(u"Fingerprint: %s", fpr)
1170
1531
logger.debug("Fingerprint: %s", fpr)
1532
1171
1533
try:
1172
1534
client = ProxyClient(child_pipe, fpr,
1173
1535
self.client_address)
1174
1536
except KeyError:
1175
1537
return
1176
1538
1177
if client.approved_delay:
1178
delay = client.approved_delay
1539
if client.approval_delay:
1540
delay = client.approval_delay
1179
1541
client.approvals_pending += 1
1180
1542
approval_required = True
1181
1543
1182
1544
while True:
1183
1545
if not client.enabled:
1184
logger.warning(u"Client %s is disabled",
1546
logger.info("Client %s is disabled",
1185
1547
client.name)
1186
1548
if self.server.use_dbus:
1187
1549
# Emit D-Bus signal
1188
client.Rejected("Disabled")
1550
client.Rejected("Disabled")
1189
1551
return
1190
1552
1191
if client._approved or not client.approved_delay:
1553
if client.approved or not client.approval_delay:
1192
1554
#We are approved or approval is disabled
1193
1555
break
1194
elif client._approved is None:
1195
logger.info(u"Client %s need approval",
1556
elif client.approved is None:
1557
logger.info("Client %s needs approval",
1196
1558
client.name)
1197
1559
if self.server.use_dbus:
1198
1560
# Emit D-Bus signal
1199
1561
client.NeedApproval(
1200
client.approved_delay_milliseconds(),
1562
client.approval_delay_milliseconds(),
1201
1563
client.approved_by_default)
1202
1564
else:
1203
logger.warning(u"Client %s was not approved",
1565
logger.warning("Client %s was not approved",
1204
1566
client.name)
1205
1567
if self.server.use_dbus:
1206
1568
# Emit D-Bus signal
1207
client.Rejected("Disapproved")
1569
client.Rejected("Denied")
1208
1570
return
1209
1571
1210
1572
#wait until timeout or approved
1211
#x = float(client._timedelta_to_milliseconds(delay))
1212
1573
time = datetime.datetime.now()
1213
1574
client.changedstate.acquire()
1214
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
1575
(client.changedstate.wait
1576
(float(client.timedelta_to_milliseconds(delay)
1577
/ 1000)))
1215
1578
client.changedstate.release()
1216
1579
time2 = datetime.datetime.now()
1217
1580
if (time2 - time) >= delay:
1221
1584
client.name)
1222
1585
if self.server.use_dbus:
1223
1586
# Emit D-Bus signal
1224
client.Rejected("Time out")
1587
client.Rejected("Approval timed out")
1225
1588
return
1226
1589
else:
1227
1590
break
1232
1595
while sent_size < len(client.secret):
1233
1596
try:
1234
1597
sent = session.send(client.secret[sent_size:])
1235
except (gnutls.errors.GNUTLSError), error:
1598
except gnutls.errors.GNUTLSError as error:
1236
1599
logger.warning("gnutls send failed")
1237
1600
return
1238
logger.debug(u"Sent: %d, remaining: %d",
1601
logger.debug("Sent: %d, remaining: %d",
1239
1602
sent, len(client.secret)
1240
1603
- (sent_size + sent))
1241
1604
sent_size += sent
1242
1243
logger.info(u"Sending secret to %s", client.name)
1244
# bump the timeout as if seen
1245
client.checked_ok()
1605
1606
logger.info("Sending secret to %s", client.name)
1607
# bump the timeout using extended_timeout
1608
client.checked_ok(client.extended_timeout)
1246
1609
if self.server.use_dbus:
1247
1610
# Emit D-Bus signal
1248
1611
client.GotSecret()
1252
1615
client.approvals_pending -= 1
1253
1616
try:
1254
1617
session.bye()
1255
except (gnutls.errors.GNUTLSError), error:
1256
logger.warning("gnutls bye failed")
1618
except gnutls.errors.GNUTLSError as error:
1619
logger.warning("GnuTLS bye failed")
1257
1620
1258
1621
@staticmethod
1259
1622
def peer_certificate(session):
1269
1632
.gnutls_certificate_get_peers
1270
1633
(session._c_object, ctypes.byref(list_size)))
1271
1634
if not bool(cert_list) and list_size.value != 0:
1272
raise gnutls.errors.GNUTLSError(u"error getting peer"
1273
u" certificate")
1635
raise gnutls.errors.GNUTLSError("error getting peer"
1636
" certificate")
1274
1637
if list_size.value == 0:
1275
1638
return None
1276
1639
cert = cert_list[0]
1302
1665
if crtverify.value != 0:
1303
1666
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1304
1667
raise (gnutls.errors.CertificateSecurityError
1305
(u"Verify failed"))
1668
("Verify failed"))
1306
1669
# New buffer for the fingerprint
1307
1670
buf = ctypes.create_string_buffer(20)
1308
1671
buf_len = ctypes.c_size_t()
1315
1678
# Convert the buffer to a Python bytestring
1316
1679
fpr = ctypes.string_at(buf, buf_len.value)
1317
1680
# Convert the bytestring to hexadecimal notation
1318
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1681
hex_fpr = binascii.hexlify(fpr).upper()
1319
1682
return hex_fpr
1320
1683
1321
1684
1324
1687
def sub_process_main(self, request, address):
1325
1688
try:
1326
1689
self.finish_request(request, address)
1327
except:
1690
except Exception:
1328
1691
self.handle_error(request, address)
1329
1692
self.close_request(request)
1330
1693
1331
1694
def process_request(self, request, address):
1332
1695
"""Start a new process to process the request."""
1333
multiprocessing.Process(target = self.sub_process_main,
1334
args = (request, address)).start()
1696
proc = multiprocessing.Process(target = self.sub_process_main,
1697
args = (request,
1698
address))
1699
proc.start()
1700
return proc
1701
1335
1702
1336
1703
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1337
1704
""" adds a pipe to the MixIn """
1341
1708
This function creates a new pipe in self.pipe
1342
1709
"""
1343
1710
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1344
1345
super(MultiprocessingMixInWithPipe,
1346
self).process_request(request, client_address)
1711
1712
proc = MultiprocessingMixIn.process_request(self, request,
1713
client_address)
1347
1714
self.child_pipe.close()
1348
self.add_pipe(parent_pipe)
1349
1350
def add_pipe(self, parent_pipe):
1715
self.add_pipe(parent_pipe, proc)
1716
1717
def add_pipe(self, parent_pipe, proc):
1351
1718
"""Dummy function; override as necessary"""
1352
pass
1719
raise NotImplementedError
1720
1353
1721
1354
1722
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1355
1723
socketserver.TCPServer, object):
1373
1741
bind to an address or port if they were not specified."""
1374
1742
if self.interface is not None:
1375
1743
if SO_BINDTODEVICE is None:
1376
logger.error(u"SO_BINDTODEVICE does not exist;"
1377
u" cannot bind to interface %s",
1744
logger.error("SO_BINDTODEVICE does not exist;"
1745
" cannot bind to interface %s",
1378
1746
self.interface)
1379
1747
else:
1380
1748
try:
1381
1749
self.socket.setsockopt(socket.SOL_SOCKET,
1382
1750
SO_BINDTODEVICE,
1383
1751
str(self.interface
1384
+ u'\0'))
1385
except socket.error, error:
1752
+ '\0'))
1753
except socket.error as error:
1386
1754
if error[0] == errno.EPERM:
1387
logger.error(u"No permission to"
1388
u" bind to interface %s",
1755
logger.error("No permission to"
1756
" bind to interface %s",
1389
1757
self.interface)
1390
1758
elif error[0] == errno.ENOPROTOOPT:
1391
logger.error(u"SO_BINDTODEVICE not available;"
1392
u" cannot bind to interface %s",
1759
logger.error("SO_BINDTODEVICE not available;"
1760
" cannot bind to interface %s",
1393
1761
self.interface)
1394
1762
else:
1395
1763
raise
1397
1765
if self.server_address[0] or self.server_address[1]:
1398
1766
if not self.server_address[0]:
1399
1767
if self.address_family == socket.AF_INET6:
1400
any_address = u"::" # in6addr_any
1768
any_address = "::" # in6addr_any
1401
1769
else:
1402
1770
any_address = socket.INADDR_ANY
1403
1771
self.server_address = (any_address,
1430
1798
self.enabled = False
1431
1799
self.clients = clients
1432
1800
if self.clients is None:
1433
self.clients = set()
1801
self.clients = {}
1434
1802
self.use_dbus = use_dbus
1435
1803
self.gnutls_priority = gnutls_priority
1436
1804
IPv6_TCPServer.__init__(self, server_address,
1440
1808
def server_activate(self):
1441
1809
if self.enabled:
1442
1810
return socketserver.TCPServer.server_activate(self)
1811
1443
1812
def enable(self):
1444
1813
self.enabled = True
1445
def add_pipe(self, parent_pipe):
1814
1815
def add_pipe(self, parent_pipe, proc):
1446
1816
# Call "handle_ipc" for both data and EOF events
1447
1817
gobject.io_add_watch(parent_pipe.fileno(),
1448
1818
gobject.IO_IN | gobject.IO_HUP,
1449
1819
functools.partial(self.handle_ipc,
1450
parent_pipe = parent_pipe))
1451
1820
parent_pipe =
1821
parent_pipe,
1822
proc = proc))
1823
1452
1824
def handle_ipc(self, source, condition, parent_pipe=None,
1453
client_object=None):
1825
proc = None, client_object=None):
1454
1826
condition_names = {
1455
gobject.IO_IN: u"IN", # There is data to read.
1456
gobject.IO_OUT: u"OUT", # Data can be written (without
1827
gobject.IO_IN: "IN", # There is data to read.
1828
gobject.IO_OUT: "OUT", # Data can be written (without
1457
1829
# blocking).
1458
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1459
gobject.IO_ERR: u"ERR", # Error condition.
1460
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1830
gobject.IO_PRI: "PRI", # There is urgent data to read.
1831
gobject.IO_ERR: "ERR", # Error condition.
1832
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1461
1833
# broken, usually for pipes and
1462
1834
# sockets).
1463
1835
}
1465
1837
for cond, name in
1466
1838
condition_names.iteritems()
1467
1839
if cond & condition)
1468
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1469
conditions_string)
1470
1471
# error or the other end of multiprocessing.Pipe has closed
1840
# error, or the other end of multiprocessing.Pipe has closed
1472
1841
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
1842
# Wait for other process to exit
1843
proc.join()
1473
1844
return False
1474
1845
1475
1846
# Read a request from the child
1476
1847
request = parent_pipe.recv()
1477
logger.debug(u"IPC request: %s", repr(request))
1478
1848
command = request[0]
1479
1849
1480
1850
if command == 'init':
1481
1851
fpr = request[1]
1482
1852
address = request[2]
1483
1853
1484
for c in self.clients:
1854
for c in self.clients.itervalues():
1485
1855
if c.fingerprint == fpr:
1486
1856
client = c
1487
1857
break
1488
1858
else:
1489
logger.warning(u"Client not found for fingerprint: %s, ad"
1490
u"dress: %s", fpr, address)
1859
logger.info("Client not found for fingerprint: %s, ad"
1860
"dress: %s", fpr, address)
1491
1861
if self.use_dbus:
1492
1862
# Emit D-Bus signal
1493
mandos_dbus_service.ClientNotFound(fpr, address)
1863
mandos_dbus_service.ClientNotFound(fpr,
1864
address[0])
1494
1865
parent_pipe.send(False)
1495
1866
return False
1496
1867
1497
1868
gobject.io_add_watch(parent_pipe.fileno(),
1498
1869
gobject.IO_IN | gobject.IO_HUP,
1499
1870
functools.partial(self.handle_ipc,
1500
parent_pipe = parent_pipe,
1501
client_object = client))
1871
parent_pipe =
1872
parent_pipe,
1873
proc = proc,
1874
client_object =
1875
client))
1502
1876
parent_pipe.send(True)
1503
# remove the old hook in favor of the new above hook on same fileno
1877
# remove the old hook in favor of the new above hook on
1878
# same fileno
1504
1879
return False
1505
1880
if command == 'funcall':
1506
1881
funcname = request[1]
1507
1882
args = request[2]
1508
1883
kwargs = request[3]
1509
1884
1510
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
1511
1885
parent_pipe.send(('data', getattr(client_object,
1886
funcname)(*args,
1887
**kwargs)))
1888
1512
1889
if command == 'getattr':
1513
1890
attrname = request[1]
1514
1891
if callable(client_object.__getattribute__(attrname)):
1515
1892
parent_pipe.send(('function',))
1516
1893
else:
1517
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
1894
parent_pipe.send(('data', client_object
1895
.__getattribute__(attrname)))
1518
1896
1519
1897
if command == 'setattr':
1520
1898
attrname = request[1]
1521
1899
value = request[2]
1522
1900
setattr(client_object, attrname, value)
1523
1901
1524
1902
return True
1525
1903
1526
1904
1527
1905
def string_to_delta(interval):
1528
1906
"""Parse a string and return a datetime.timedelta
1529
1907
1530
>>> string_to_delta(u'7d')
1908
>>> string_to_delta('7d')
1531
1909
datetime.timedelta(7)
1532
>>> string_to_delta(u'60s')
1910
>>> string_to_delta('60s')
1533
1911
datetime.timedelta(0, 60)
1534
>>> string_to_delta(u'60m')
1912
>>> string_to_delta('60m')
1535
1913
datetime.timedelta(0, 3600)
1536
>>> string_to_delta(u'24h')
1914
>>> string_to_delta('24h')
1537
1915
datetime.timedelta(1)
1538
>>> string_to_delta(u'1w')
1916
>>> string_to_delta('1w')
1539
1917
datetime.timedelta(7)
1540
>>> string_to_delta(u'5m 30s')
1918
>>> string_to_delta('5m 30s')
1541
1919
datetime.timedelta(0, 330)
1542
1920
"""
1543
1921
timevalue = datetime.timedelta(0)
1545
1923
try:
1546
1924
suffix = unicode(s[-1])
1547
1925
value = int(s[:-1])
1548
if suffix == u"d":
1926
if suffix == "d":
1549
1927
delta = datetime.timedelta(value)
1550
elif suffix == u"s":
1928
elif suffix == "s":
1551
1929
delta = datetime.timedelta(0, value)
1552
elif suffix == u"m":
1930
elif suffix == "m":
1553
1931
delta = datetime.timedelta(0, 0, 0, 0, value)
1554
elif suffix == u"h":
1932
elif suffix == "h":
1555
1933
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1556
elif suffix == u"w":
1934
elif suffix == "w":
1557
1935
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1558
1936
else:
1559
raise ValueError(u"Unknown suffix %r" % suffix)
1560
except (ValueError, IndexError), e:
1561
raise ValueError(e.message)
1937
raise ValueError("Unknown suffix %r" % suffix)
1938
except (ValueError, IndexError) as e:
1939
raise ValueError(*(e.args))
1562
1940
timevalue += delta
1563
1941
return timevalue
1564
1942
1565
1943
1566
def if_nametoindex(interface):
1567
"""Call the C function if_nametoindex(), or equivalent
1568
1569
Note: This function cannot accept a unicode string."""
1570
global if_nametoindex
1571
try:
1572
if_nametoindex = (ctypes.cdll.LoadLibrary
1573
(ctypes.util.find_library(u"c"))
1574
.if_nametoindex)
1575
except (OSError, AttributeError):
1576
logger.warning(u"Doing if_nametoindex the hard way")
1577
def if_nametoindex(interface):
1578
"Get an interface index the hard way, i.e. using fcntl()"
1579
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1580
with contextlib.closing(socket.socket()) as s:
1581
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1582
struct.pack(str(u"16s16x"),
1583
interface))
1584
interface_index = struct.unpack(str(u"I"),
1585
ifreq[16:20])[0]
1586
return interface_index
1587
return if_nametoindex(interface)
1588
1589
1590
1944
def daemon(nochdir = False, noclose = False):
1591
1945
"""See daemon(3). Standard BSD Unix function.
1592
1946
1595
1949
sys.exit()
1596
1950
os.setsid()
1597
1951
if not nochdir:
1598
os.chdir(u"/")
1952
os.chdir("/")
1599
1953
if os.fork():
1600
1954
sys.exit()
1601
1955
if not noclose:
1603
1957
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1604
1958
if not stat.S_ISCHR(os.fstat(null).st_mode):
1605
1959
raise OSError(errno.ENODEV,
1606
u"%s not a character device"
1960
"%s not a character device"
1607
1961
% os.path.devnull)
1608
1962
os.dup2(null, sys.stdin.fileno())
1609
1963
os.dup2(null, sys.stdout.fileno())
1617
1971
##################################################################
1618
1972
# Parsing of options, both command line and config file
1619
1973
1620
parser = optparse.OptionParser(version = "%%prog %s" % version)
1621
parser.add_option("-i", u"--interface", type=u"string",
1622
metavar="IF", help=u"Bind to interface IF")
1623
parser.add_option("-a", u"--address", type=u"string",
1624
help=u"Address to listen for requests on")
1625
parser.add_option("-p", u"--port", type=u"int",
1626
help=u"Port number to receive requests on")
1627
parser.add_option("--check", action=u"store_true",
1628
help=u"Run self-test")
1629
parser.add_option("--debug", action=u"store_true",
1630
help=u"Debug mode; run in foreground and log to"
1631
u" terminal")
1632
parser.add_option("--debuglevel", type=u"string", metavar="Level",
1633
help=u"Debug level for stdout output")
1634
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1635
u" priority string (see GnuTLS documentation)")
1636
parser.add_option("--servicename", type=u"string",
1637
metavar=u"NAME", help=u"Zeroconf service name")
1638
parser.add_option("--configdir", type=u"string",
1639
default=u"/etc/mandos", metavar=u"DIR",
1640
help=u"Directory to search for configuration"
1641
u" files")
1642
parser.add_option("--no-dbus", action=u"store_false",
1643
dest=u"use_dbus", help=u"Do not provide D-Bus"
1644
u" system bus interface")
1645
parser.add_option("--no-ipv6", action=u"store_false",
1646
dest=u"use_ipv6", help=u"Do not use IPv6")
1647
options = parser.parse_args()[0]
1974
parser = argparse.ArgumentParser()
1975
parser.add_argument("-v", "--version", action="version",
1976
version = "%%(prog)s %s" % version,
1977
help="show version number and exit")
1978
parser.add_argument("-i", "--interface", metavar="IF",
1979
help="Bind to interface IF")
1980
parser.add_argument("-a", "--address",
1981
help="Address to listen for requests on")
1982
parser.add_argument("-p", "--port", type=int,
1983
help="Port number to receive requests on")
1984
parser.add_argument("--check", action="store_true",
1985
help="Run self-test")
1986
parser.add_argument("--debug", action="store_true",
1987
help="Debug mode; run in foreground and log"
1988
" to terminal")
1989
parser.add_argument("--debuglevel", metavar="LEVEL",
1990
help="Debug level for stdout output")
1991
parser.add_argument("--priority", help="GnuTLS"
1992
" priority string (see GnuTLS documentation)")
1993
parser.add_argument("--servicename",
1994
metavar="NAME", help="Zeroconf service name")
1995
parser.add_argument("--configdir",
1996
default="/etc/mandos", metavar="DIR",
1997
help="Directory to search for configuration"
1998
" files")
1999
parser.add_argument("--no-dbus", action="store_false",
2000
dest="use_dbus", help="Do not provide D-Bus"
2001
" system bus interface")
2002
parser.add_argument("--no-ipv6", action="store_false",
2003
dest="use_ipv6", help="Do not use IPv6")
2004
parser.add_argument("--no-restore", action="store_false",
2005
dest="restore", help="Do not restore stored"
2006
" state")
2007
parser.add_argument("--statedir", metavar="DIR",
2008
help="Directory to save/restore state in")
2009
2010
options = parser.parse_args()
1648
2011
1649
2012
if options.check:
1650
2013
import doctest
1652
2015
sys.exit()
1653
2016
1654
2017
# Default values for config file for server-global settings
1655
server_defaults = { u"interface": u"",
1656
u"address": u"",
1657
u"port": u"",
1658
u"debug": u"False",
1659
u"priority":
1660
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1661
u"servicename": u"Mandos",
1662
u"use_dbus": u"True",
1663
u"use_ipv6": u"True",
1664
u"debuglevel": u"",
2018
server_defaults = { "interface": "",
2019
"address": "",
2020
"port": "",
2021
"debug": "False",
2022
"priority":
2023
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2024
"servicename": "Mandos",
2025
"use_dbus": "True",
2026
"use_ipv6": "True",
2027
"debuglevel": "",
2028
"restore": "True",
2029
"statedir": "/var/lib/mandos"
1665
2030
}
1666
2031
1667
2032
# Parse config file for server-global settings
1668
2033
server_config = configparser.SafeConfigParser(server_defaults)
1669
2034
del server_defaults
1670
2035
server_config.read(os.path.join(options.configdir,
1671
u"mandos.conf"))
2036
"mandos.conf"))
1672
2037
# Convert the SafeConfigParser object to a dict
1673
2038
server_settings = server_config.defaults()
1674
2039
# Use the appropriate methods on the non-string config options
1675
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1676
server_settings[option] = server_config.getboolean(u"DEFAULT",
2040
for option in ("debug", "use_dbus", "use_ipv6"):
2041
server_settings[option] = server_config.getboolean("DEFAULT",
1677
2042
option)
1678
2043
if server_settings["port"]:
1679
server_settings["port"] = server_config.getint(u"DEFAULT",
1680
u"port")
2044
server_settings["port"] = server_config.getint("DEFAULT",
2045
"port")
1681
2046
del server_config
1682
2047
1683
2048
# Override the settings from the config file with command line
1684
2049
# options, if set.
1685
for option in (u"interface", u"address", u"port", u"debug",
1686
u"priority", u"servicename", u"configdir",
1687
u"use_dbus", u"use_ipv6", u"debuglevel"):
2050
for option in ("interface", "address", "port", "debug",
2051
"priority", "servicename", "configdir",
2052
"use_dbus", "use_ipv6", "debuglevel", "restore",
2053
"statedir"):
1688
2054
value = getattr(options, option)
1689
2055
if value is not None:
1690
2056
server_settings[option] = value
1698
2064
##################################################################
1699
2065
1700
2066
# For convenience
1701
debug = server_settings[u"debug"]
1702
debuglevel = server_settings[u"debuglevel"]
1703
use_dbus = server_settings[u"use_dbus"]
1704
use_ipv6 = server_settings[u"use_ipv6"]
1705
1706
if server_settings[u"servicename"] != u"Mandos":
2067
debug = server_settings["debug"]
2068
debuglevel = server_settings["debuglevel"]
2069
use_dbus = server_settings["use_dbus"]
2070
use_ipv6 = server_settings["use_ipv6"]
2071
stored_state_path = os.path.join(server_settings["statedir"],
2072
stored_state_file)
2073
2074
if debug:
2075
initlogger(debug, logging.DEBUG)
2076
else:
2077
if not debuglevel:
2078
initlogger(debug)
2079
else:
2080
level = getattr(logging, debuglevel.upper())
2081
initlogger(debug, level)
2082
2083
if server_settings["servicename"] != "Mandos":
1707
2084
syslogger.setFormatter(logging.Formatter
1708
(u'Mandos (%s) [%%(process)d]:'
1709
u' %%(levelname)s: %%(message)s'
1710
% server_settings[u"servicename"]))
2085
('Mandos (%s) [%%(process)d]:'
2086
' %%(levelname)s: %%(message)s'
2087
% server_settings["servicename"]))
1711
2088
1712
2089
# Parse config file with clients
1713
client_defaults = { u"timeout": u"1h",
1714
u"interval": u"5m",
1715
u"checker": u"fping -q -- %%(host)s",
1716
u"host": u"",
1717
u"approved_delay": u"0s",
1718
u"approved_duration": u"1s",
1719
}
1720
client_config = configparser.SafeConfigParser(client_defaults)
1721
client_config.read(os.path.join(server_settings[u"configdir"],
1722
u"clients.conf"))
2090
client_config = configparser.SafeConfigParser(Client
2091
.client_defaults)
2092
client_config.read(os.path.join(server_settings["configdir"],
2093
"clients.conf"))
1723
2094
1724
2095
global mandos_dbus_service
1725
2096
mandos_dbus_service = None
1726
2097
1727
tcp_server = MandosServer((server_settings[u"address"],
1728
server_settings[u"port"]),
2098
tcp_server = MandosServer((server_settings["address"],
2099
server_settings["port"]),
1729
2100
ClientHandler,
1730
interface=server_settings[u"interface"],
2101
interface=(server_settings["interface"]
2102
or None),
1731
2103
use_ipv6=use_ipv6,
1732
2104
gnutls_priority=
1733
server_settings[u"priority"],
2105
server_settings["priority"],
1734
2106
use_dbus=use_dbus)
1735
pidfilename = u"/var/run/mandos.pid"
1736
try:
1737
pidfile = open(pidfilename, u"w")
1738
except IOError:
1739
logger.error(u"Could not open file %r", pidfilename)
2107
if not debug:
2108
pidfilename = "/var/run/mandos.pid"
2109
try:
2110
pidfile = open(pidfilename, "w")
2111
except IOError:
2112
logger.error("Could not open file %r", pidfilename)
1740
2113
1741
2114
try:
1742
uid = pwd.getpwnam(u"_mandos").pw_uid
1743
gid = pwd.getpwnam(u"_mandos").pw_gid
2115
uid = pwd.getpwnam("_mandos").pw_uid
2116
gid = pwd.getpwnam("_mandos").pw_gid
1744
2117
except KeyError:
1745
2118
try:
1746
uid = pwd.getpwnam(u"mandos").pw_uid
1747
gid = pwd.getpwnam(u"mandos").pw_gid
2119
uid = pwd.getpwnam("mandos").pw_uid
2120
gid = pwd.getpwnam("mandos").pw_gid
1748
2121
except KeyError:
1749
2122
try:
1750
uid = pwd.getpwnam(u"nobody").pw_uid
1751
gid = pwd.getpwnam(u"nobody").pw_gid
2123
uid = pwd.getpwnam("nobody").pw_uid
2124
gid = pwd.getpwnam("nobody").pw_gid
1752
2125
except KeyError:
1753
2126
uid = 65534
1754
2127
gid = 65534
1755
2128
try:
1756
2129
os.setgid(gid)
1757
2130
os.setuid(uid)
1758
except OSError, error:
2131
except OSError as error:
1759
2132
if error[0] != errno.EPERM:
1760
2133
raise error
1761
2134
1762
# Enable all possible GnuTLS debugging
1763
1764
1765
if not debug and not debuglevel:
1766
syslogger.setLevel(logging.WARNING)
1767
console.setLevel(logging.WARNING)
1768
if debuglevel:
1769
level = getattr(logging, debuglevel.upper())
1770
syslogger.setLevel(level)
1771
console.setLevel(level)
1772
1773
2135
if debug:
2136
# Enable all possible GnuTLS debugging
2137
1774
2138
# "Use a log level over 10 to enable all debugging options."
1775
2139
# - GnuTLS manual
1776
2140
gnutls.library.functions.gnutls_global_set_log_level(11)
1777
2141
1778
2142
@gnutls.library.types.gnutls_log_func
1779
2143
def debug_gnutls(level, string):
1780
logger.debug(u"GnuTLS: %s", string[:-1])
2144
logger.debug("GnuTLS: %s", string[:-1])
1781
2145
1782
2146
(gnutls.library.functions
1783
2147
.gnutls_global_set_log_function(debug_gnutls))
1784
2148
1785
2149
# Redirect stdin so all checkers get /dev/null
1786
2150
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1787
2151
os.dup2(null, sys.stdin.fileno())
1788
2152
if null > 2:
1789
2153
os.close(null)
1790
else:
1791
# No console logging
1792
logger.removeHandler(console)
1793
2154
2155
# Need to fork before connecting to D-Bus
2156
if not debug:
2157
# Close all input and output, do double fork, etc.
2158
daemon()
2159
2160
gobject.threads_init()
1794
2161
1795
2162
global main_loop
1796
2163
# From the Avahi example code
1800
2167
# End of Avahi example code
1801
2168
if use_dbus:
1802
2169
try:
1803
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
2170
bus_name = dbus.service.BusName("se.recompile.Mandos",
1804
2171
bus, do_not_queue=True)
1805
except dbus.exceptions.NameExistsException, e:
1806
logger.error(unicode(e) + u", disabling D-Bus")
2172
old_bus_name = (dbus.service.BusName
2173
("se.bsnet.fukt.Mandos", bus,
2174
do_not_queue=True))
2175
except dbus.exceptions.NameExistsException as e:
2176
logger.error(unicode(e) + ", disabling D-Bus")
1807
2177
use_dbus = False
1808
server_settings[u"use_dbus"] = False
2178
server_settings["use_dbus"] = False
1809
2179
tcp_server.use_dbus = False
1810
2180
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1811
service = AvahiService(name = server_settings[u"servicename"],
1812
servicetype = u"_mandos._tcp",
1813
protocol = protocol, bus = bus)
2181
service = AvahiServiceToSyslog(name =
2182
server_settings["servicename"],
2183
servicetype = "_mandos._tcp",
2184
protocol = protocol, bus = bus)
1814
2185
if server_settings["interface"]:
1815
2186
service.interface = (if_nametoindex
1816
(str(server_settings[u"interface"])))
1817
1818
if not debug:
1819
# Close all input and output, do double fork, etc.
1820
daemon()
1821
2187
(str(server_settings["interface"])))
2188
1822
2189
global multiprocessing_manager
1823
2190
multiprocessing_manager = multiprocessing.Manager()
1824
2191
1825
2192
client_class = Client
1826
2193
if use_dbus:
1827
client_class = functools.partial(ClientDBus, bus = bus)
1828
def client_config_items(config, section):
1829
special_settings = {
1830
"approved_by_default":
1831
lambda: config.getboolean(section,
1832
"approved_by_default"),
1833
}
1834
for name, value in config.items(section):
2194
client_class = functools.partial(ClientDBusTransitional,
2195
bus = bus)
2196
2197
client_settings = Client.config_parser(client_config)
2198
old_client_settings = {}
2199
clients_data = {}
2200
2201
# Get client data and settings from last running state.
2202
if server_settings["restore"]:
2203
try:
2204
with open(stored_state_path, "rb") as stored_state:
2205
clients_data, old_client_settings = (pickle.load
2206
(stored_state))
2207
os.remove(stored_state_path)
2208
except IOError as e:
2209
logger.warning("Could not load persistent state: {0}"
2210
.format(e))
2211
if e.errno != errno.ENOENT:
2212
raise
2213
except EOFError as e:
2214
logger.warning("Could not load persistent state: "
2215
"EOFError: {0}".format(e))
2216
2217
with PGPEngine() as pgp:
2218
for client_name, client in clients_data.iteritems():
2219
# Decide which value to use after restoring saved state.
2220
# We have three different values: Old config file,
2221
# new config file, and saved state.
2222
# New config value takes precedence if it differs from old
2223
# config value, otherwise use saved state.
2224
for name, value in client_settings[client_name].items():
2225
try:
2226
# For each value in new config, check if it
2227
# differs from the old config value (Except for
2228
# the "secret" attribute)
2229
if (name != "secret" and
2230
value != old_client_settings[client_name]
2231
[name]):
2232
client[name] = value
2233
except KeyError:
2234
pass
2235
2236
# Clients who has passed its expire date can still be
2237
# enabled if its last checker was successful. Clients
2238
# whose checker succeeded before we stored its state is
2239
# assumed to have successfully run all checkers during
2240
# downtime.
2241
if client["enabled"]:
2242
if datetime.datetime.utcnow() >= client["expires"]:
2243
if not client["last_checked_ok"]:
2244
logger.warning(
2245
"disabling client {0} - Client never "
2246
"performed a successful checker"
2247
.format(client_name))
2248
client["enabled"] = False
2249
elif client["last_checker_status"] != 0:
2250
logger.warning(
2251
"disabling client {0} - Client "
2252
"last checker failed with error code {1}"
2253
.format(client_name,
2254
client["last_checker_status"]))
2255
client["enabled"] = False
2256
else:
2257
client["expires"] = (datetime.datetime
2258
.utcnow()
2259
+ client["timeout"])
2260
logger.debug("Last checker succeeded,"
2261
" keeping {0} enabled"
2262
.format(client_name))
1835
2263
try:
1836
yield (name, special_settings[name]())
1837
except KeyError:
1838
yield (name, value)
1839
1840
tcp_server.clients.update(set(
1841
client_class(name = section,
1842
config= dict(client_config_items(
1843
client_config, section)))
1844
for section in client_config.sections()))
2264
client["secret"] = (
2265
pgp.decrypt(client["encrypted_secret"],
2266
client_settings[client_name]
2267
["secret"]))
2268
except PGPError:
2269
# If decryption fails, we use secret from new settings
2270
logger.debug("Failed to decrypt {0} old secret"
2271
.format(client_name))
2272
client["secret"] = (
2273
client_settings[client_name]["secret"])
2274
2275
2276
# Add/remove clients based on new changes made to config
2277
for client_name in (set(old_client_settings)
2278
- set(client_settings)):
2279
del clients_data[client_name]
2280
for client_name in (set(client_settings)
2281
- set(old_client_settings)):
2282
clients_data[client_name] = client_settings[client_name]
2283
2284
# Create all client objects
2285
for client_name, client in clients_data.iteritems():
2286
tcp_server.clients[client_name] = client_class(
2287
name = client_name, settings = client)
2288
1845
2289
if not tcp_server.clients:
1846
logger.warning(u"No clients defined")
2290
logger.warning("No clients defined")
1847
2291
1848
try:
1849
with pidfile:
1850
pid = os.getpid()
1851
pidfile.write(str(pid) + "\n")
1852
del pidfile
1853
except IOError:
1854
logger.error(u"Could not write to file %r with PID %d",
1855
pidfilename, pid)
1856
except NameError:
1857
# "pidfile" was never created
1858
pass
1859
del pidfilename
1860
1861
2292
if not debug:
2293
try:
2294
with pidfile:
2295
pid = os.getpid()
2296
pidfile.write(str(pid) + "\n".encode("utf-8"))
2297
del pidfile
2298
except IOError:
2299
logger.error("Could not write to file %r with PID %d",
2300
pidfilename, pid)
2301
except NameError:
2302
# "pidfile" was never created
2303
pass
2304
del pidfilename
1862
2305
signal.signal(signal.SIGINT, signal.SIG_IGN)
2306
1863
2307
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1864
2308
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1865
2309
1867
2311
class MandosDBusService(dbus.service.Object):
1868
2312
"""A D-Bus proxy object"""
1869
2313
def __init__(self):
1870
dbus.service.Object.__init__(self, bus, u"/")
1871
_interface = u"se.bsnet.fukt.Mandos"
2314
dbus.service.Object.__init__(self, bus, "/")
2315
_interface = "se.recompile.Mandos"
1872
2316
1873
@dbus.service.signal(_interface, signature=u"o")
2317
@dbus.service.signal(_interface, signature="o")
1874
2318
def ClientAdded(self, objpath):
1875
2319
"D-Bus signal"
1876
2320
pass
1877
2321
1878
@dbus.service.signal(_interface, signature=u"ss")
2322
@dbus.service.signal(_interface, signature="ss")
1879
2323
def ClientNotFound(self, fingerprint, address):
1880
2324
"D-Bus signal"
1881
2325
pass
1882
2326
1883
@dbus.service.signal(_interface, signature=u"os")
2327
@dbus.service.signal(_interface, signature="os")
1884
2328
def ClientRemoved(self, objpath, name):
1885
2329
"D-Bus signal"
1886
2330
pass
1887
2331
1888
@dbus.service.method(_interface, out_signature=u"ao")
2332
@dbus.service.method(_interface, out_signature="ao")
1889
2333
def GetAllClients(self):
1890
2334
"D-Bus method"
1891
2335
return dbus.Array(c.dbus_object_path
1892
for c in tcp_server.clients)
2336
for c in
2337
tcp_server.clients.itervalues())
1893
2338
1894
2339
@dbus.service.method(_interface,
1895
out_signature=u"a{oa{sv}}")
2340
out_signature="a{oa{sv}}")
1896
2341
def GetAllClientsWithProperties(self):
1897
2342
"D-Bus method"
1898
2343
return dbus.Dictionary(
1899
((c.dbus_object_path, c.GetAll(u""))
1900
for c in tcp_server.clients),
1901
signature=u"oa{sv}")
2344
((c.dbus_object_path, c.GetAll(""))
2345
for c in tcp_server.clients.itervalues()),
2346
signature="oa{sv}")
1902
2347
1903
@dbus.service.method(_interface, in_signature=u"o")
2348
@dbus.service.method(_interface, in_signature="o")
1904
2349
def RemoveClient(self, object_path):
1905
2350
"D-Bus method"
1906
for c in tcp_server.clients:
2351
for c in tcp_server.clients.itervalues():
1907
2352
if c.dbus_object_path == object_path:
1908
tcp_server.clients.remove(c)
2353
del tcp_server.clients[c.name]
1909
2354
c.remove_from_connection()
1910
2355
# Don't signal anything except ClientRemoved
1911
2356
c.disable(quiet=True)
1916
2361
1917
2362
del _interface
1918
2363
1919
mandos_dbus_service = MandosDBusService()
2364
class MandosDBusServiceTransitional(MandosDBusService):
2365
__metaclass__ = AlternateDBusNamesMetaclass
2366
mandos_dbus_service = MandosDBusServiceTransitional()
1920
2367
1921
2368
def cleanup():
1922
2369
"Cleanup function; run on exit"
1923
2370
service.cleanup()
1924
2371
2372
multiprocessing.active_children()
2373
if not (tcp_server.clients or client_settings):
2374
return
2375
2376
# Store client before exiting. Secrets are encrypted with key
2377
# based on what config file has. If config file is
2378
# removed/edited, old secret will thus be unrecovable.
2379
clients = {}
2380
with PGPEngine() as pgp:
2381
for client in tcp_server.clients.itervalues():
2382
key = client_settings[client.name]["secret"]
2383
client.encrypted_secret = pgp.encrypt(client.secret,
2384
key)
2385
client_dict = {}
2386
2387
# A list of attributes that can not be pickled
2388
# + secret.
2389
exclude = set(("bus", "changedstate", "secret",
2390
"checker"))
2391
for name, typ in (inspect.getmembers
2392
(dbus.service.Object)):
2393
exclude.add(name)
2394
2395
client_dict["encrypted_secret"] = (client
2396
.encrypted_secret)
2397
for attr in client.client_structure:
2398
if attr not in exclude:
2399
client_dict[attr] = getattr(client, attr)
2400
2401
clients[client.name] = client_dict
2402
del client_settings[client.name]["secret"]
2403
2404
try:
2405
tempfd, tempname = tempfile.mkstemp(suffix=".pickle",
2406
prefix="clients-",
2407
dir=os.path.dirname
2408
(stored_state_path))
2409
with os.fdopen(tempfd, "wb") as stored_state:
2410
pickle.dump((clients, client_settings), stored_state)
2411
os.rename(tempname, stored_state_path)
2412
except (IOError, OSError) as e:
2413
logger.warning("Could not save persistent state: {0}"
2414
.format(e))
2415
if not debug:
2416
try:
2417
os.remove(tempname)
2418
except NameError:
2419
pass
2420
if e.errno not in set((errno.ENOENT, errno.EACCES,
2421
errno.EEXIST)):
2422
raise e
2423
2424
# Delete all clients, and settings from config
1925
2425
while tcp_server.clients:
1926
client = tcp_server.clients.pop()
2426
name, client = tcp_server.clients.popitem()
1927
2427
if use_dbus:
1928
2428
client.remove_from_connection()
1929
client.disable_hook = None
1930
2429
# Don't signal anything except ClientRemoved
1931
2430
client.disable(quiet=True)
1932
2431
if use_dbus:
1933
2432
# Emit D-Bus signal
1934
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
2433
mandos_dbus_service.ClientRemoved(client
2434
.dbus_object_path,
1935
2435
client.name)
2436
client_settings.clear()
1936
2437
1937
2438
atexit.register(cleanup)
1938
2439
1939
for client in tcp_server.clients:
2440
for client in tcp_server.clients.itervalues():
1940
2441
if use_dbus:
1941
2442
# Emit D-Bus signal
1942
2443
mandos_dbus_service.ClientAdded(client.dbus_object_path)
1943
client.enable()
2444
# Need to initiate checking of clients
2445
if client.enabled:
2446
client.init_checker()
1944
2447
1945
2448
tcp_server.enable()
1946
2449
tcp_server.server_activate()
1948
2451
# Find out what port we got
1949
2452
service.port = tcp_server.socket.getsockname()[1]
1950
2453
if use_ipv6:
1951
logger.info(u"Now listening on address %r, port %d,"
2454
logger.info("Now listening on address %r, port %d,"
1952
2455
" flowinfo %d, scope_id %d"
1953
2456
% tcp_server.socket.getsockname())
1954
2457
else: # IPv4
1955
logger.info(u"Now listening on address %r, port %d"
2458
logger.info("Now listening on address %r, port %d"
1956
2459
% tcp_server.socket.getsockname())
1957
2460
1958
2461
#service.interface = tcp_server.socket.getsockname()[3]
1961
2464
# From the Avahi example code
1962
2465
try:
1963
2466
service.activate()
1964
except dbus.exceptions.DBusException, error:
1965
logger.critical(u"DBusException: %s", error)
2467
except dbus.exceptions.DBusException as error:
2468
logger.critical("DBusException: %s", error)
1966
2469
cleanup()
1967
2470
sys.exit(1)
1968
2471
# End of Avahi example code
1972
2475
(tcp_server.handle_request
1973
2476
(*args[2:], **kwargs) or True))
1974
2477
1975
logger.debug(u"Starting main loop")
2478
logger.debug("Starting main loop")
1976
2479
main_loop.run()
1977
except AvahiError, error:
1978
logger.critical(u"AvahiError: %s", error)
2480
except AvahiError as error:
2481
logger.critical("AvahiError: %s", error)
1979
2482
cleanup()
1980
2483
sys.exit(1)
1981
2484
except KeyboardInterrupt:
1982
2485
if debug:
1983
print >> sys.stderr
1984
logger.debug(u"Server received KeyboardInterrupt")
1985
logger.debug(u"Server exiting")
2486
print("", file=sys.stderr)
2487
logger.debug("Server received KeyboardInterrupt")
2488
logger.debug("Server exiting")
1986
2489
# Must run before the D-Bus bus name gets deregistered
1987
2490
cleanup()
1988
2491
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0