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- Committer: teddy at recompile
- Date: 2012-01-01 17:38:33 UTC
- Revision ID: teddy@recompile.se-20120101173833-ai39bif1w0ftuyyh
* Makefile (install-server): Add intro(8mandos) man page.
* network-hooks.d/bridge: Add copyright info and year.
* network-hooks.d/openvpn: - '' -
* network-hooks.d/wireless: - '' -
* network-hooks.d/bridge: Add copyright info and year.
* network-hooks.d/openvpn: - '' -
* network-hooks.d/wireless: - '' -
- 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
15
# Copyright © 2008-2012 Björn Påhlsson
16
16
#
17
17
# This program is free software: you can redistribute it and/or modify
18
18
# it under the terms of the GNU General Public License as published by
28
28
# along with this program. If not, see
29
29
# <http://www.gnu.org/licenses/>.
30
30
#
31
# Contact the authors at <mandos@fukt.bsnet.se>.
31
# Contact the authors at <mandos@recompile.se>.
32
32
#
33
33
34
from __future__ import division, with_statement, absolute_import
34
from __future__ import (division, absolute_import, print_function,
35
unicode_literals)
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 = "1.5.0"
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 password 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)
1052
self._approvals_pending = 0
1053
1054
self._approvals_pending = 0
706
1055
# Only now, when this client is initialized, can it show up on
707
1056
# the D-Bus
1057
client_object_name = unicode(self.name).translate(
1058
{ord("."): ord("_"),
1059
ord("-"): ord("_")})
708
1060
self.dbus_object_path = (dbus.ObjectPath
709
(u"/clients/"
710
+ self.name.replace(u".", u"_")))
1061
("/clients/" + client_object_name))
711
1062
DBusObjectWithProperties.__init__(self, self.bus,
712
1063
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
1064
1065
def notifychangeproperty(transform_func,
1066
dbus_name, type_func=lambda x: x,
1067
variant_level=1):
1068
""" Modify a variable so that it's a property which announces
1069
its changes to DBus.
1070
1071
transform_fun: Function that takes a value and a variant_level
1072
and transforms it to a D-Bus type.
1073
dbus_name: D-Bus name of the variable
1074
type_func: Function that transform the value before sending it
1075
to the D-Bus. Default: no transform
1076
variant_level: D-Bus variant level. Default: 1
1077
"""
1078
attrname = "_{0}".format(dbus_name)
1079
def setter(self, value):
1080
if hasattr(self, "dbus_object_path"):
1081
if (not hasattr(self, attrname) or
1082
type_func(getattr(self, attrname, None))
1083
!= type_func(value)):
1084
dbus_value = transform_func(type_func(value),
1085
variant_level
1086
=variant_level)
1087
self.PropertyChanged(dbus.String(dbus_name),
1088
dbus_value)
1089
setattr(self, attrname, value)
1090
1091
return property(lambda self: getattr(self, attrname), setter)
1092
1093
1094
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1095
approvals_pending = notifychangeproperty(dbus.Boolean,
1096
"ApprovalPending",
1097
type_func = bool)
1098
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1099
last_enabled = notifychangeproperty(datetime_to_dbus,
1100
"LastEnabled")
1101
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1102
type_func = lambda checker:
1103
checker is not None)
1104
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1105
"LastCheckedOK")
1106
last_approval_request = notifychangeproperty(
1107
datetime_to_dbus, "LastApprovalRequest")
1108
approved_by_default = notifychangeproperty(dbus.Boolean,
1109
"ApprovedByDefault")
1110
approval_delay = notifychangeproperty(dbus.UInt64,
1111
"ApprovalDelay",
1112
type_func =
1113
timedelta_to_milliseconds)
1114
approval_duration = notifychangeproperty(
1115
dbus.UInt64, "ApprovalDuration",
1116
type_func = timedelta_to_milliseconds)
1117
host = notifychangeproperty(dbus.String, "Host")
1118
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1119
type_func =
1120
timedelta_to_milliseconds)
1121
extended_timeout = notifychangeproperty(
1122
dbus.UInt64, "ExtendedTimeout",
1123
type_func = timedelta_to_milliseconds)
1124
interval = notifychangeproperty(dbus.UInt64,
1125
"Interval",
1126
type_func =
1127
timedelta_to_milliseconds)
1128
checker_command = notifychangeproperty(dbus.String, "Checker")
1129
1130
del notifychangeproperty
757
1131
758
1132
def __del__(self, *args, **kwargs):
759
1133
try:
760
1134
self.remove_from_connection()
761
1135
except LookupError:
762
1136
pass
763
if hasattr(DBusObjectWithProperties, u"__del__"):
1137
if hasattr(DBusObjectWithProperties, "__del__"):
764
1138
DBusObjectWithProperties.__del__(self, *args, **kwargs)
765
1139
Client.__del__(self, *args, **kwargs)
766
1140
768
1142
*args, **kwargs):
769
1143
self.checker_callback_tag = None
770
1144
self.checker = None
771
# Emit D-Bus signal
772
self.PropertyChanged(dbus.String(u"checker_running"),
773
dbus.Boolean(False, variant_level=1))
774
1145
if os.WIFEXITED(condition):
775
1146
exitstatus = os.WEXITSTATUS(condition)
776
1147
# Emit D-Bus signal
786
1157
return Client.checker_callback(self, pid, condition, command,
787
1158
*args, **kwargs)
788
1159
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
1160
def start_checker(self, *args, **kwargs):
799
1161
old_checker = self.checker
800
1162
if self.checker is not None:
807
1169
and old_checker_pid != self.checker.pid):
808
1170
# Emit D-Bus signal
809
1171
self.CheckerStarted(self.current_checker_command)
810
self.PropertyChanged(
811
dbus.String(u"checker_running"),
812
dbus.Boolean(True, variant_level=1))
813
1172
return r
814
1173
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
1174
def _reset_approved(self):
825
self._approved = None
1175
self.approved = None
826
1176
return False
827
1177
828
1178
def approve(self, value=True):
829
1179
self.send_changedstate()
830
self._approved = value
831
gobject.timeout_add(self._timedelta_to_milliseconds(self.approved_duration),
1180
self.approved = value
1181
gobject.timeout_add(timedelta_to_milliseconds
1182
(self.approval_duration),
832
1183
self._reset_approved)
833
1184
834
1185
835
1186
## D-Bus methods, signals & properties
836
_interface = u"se.bsnet.fukt.Mandos.Client"
1187
_interface = "se.recompile.Mandos.Client"
837
1188
838
1189
## Signals
839
1190
840
1191
# CheckerCompleted - signal
841
@dbus.service.signal(_interface, signature=u"nxs")
1192
@dbus.service.signal(_interface, signature="nxs")
842
1193
def CheckerCompleted(self, exitcode, waitstatus, command):
843
1194
"D-Bus signal"
844
1195
pass
845
1196
846
1197
# CheckerStarted - signal
847
@dbus.service.signal(_interface, signature=u"s")
1198
@dbus.service.signal(_interface, signature="s")
848
1199
def CheckerStarted(self, command):
849
1200
"D-Bus signal"
850
1201
pass
851
1202
852
1203
# PropertyChanged - signal
853
@dbus.service.signal(_interface, signature=u"sv")
1204
@dbus.service.signal(_interface, signature="sv")
854
1205
def PropertyChanged(self, property, value):
855
1206
"D-Bus signal"
856
1207
pass
865
1216
pass
866
1217
867
1218
# Rejected - signal
868
@dbus.service.signal(_interface, signature=u"s")
1219
@dbus.service.signal(_interface, signature="s")
869
1220
def Rejected(self, reason):
870
1221
"D-Bus signal"
871
1222
pass
872
1223
873
1224
# NeedApproval - signal
874
@dbus.service.signal(_interface, signature=u"db")
1225
@dbus.service.signal(_interface, signature="tb")
875
1226
def NeedApproval(self, timeout, default):
876
1227
"D-Bus signal"
1228
return self.need_approval()
1229
1230
# NeRwequest - signal
1231
@dbus.service.signal(_interface, signature="s")
1232
def NewRequest(self, ip):
1233
"""D-Bus signal
1234
Is sent after a client request a password.
1235
"""
877
1236
pass
878
1237
879
1238
## Methods
880
1239
881
1240
# Approve - method
882
@dbus.service.method(_interface, in_signature=u"b")
1241
@dbus.service.method(_interface, in_signature="b")
883
1242
def Approve(self, value):
884
1243
self.approve(value)
885
1244
886
1245
# CheckedOK - method
887
1246
@dbus.service.method(_interface)
888
1247
def CheckedOK(self):
889
return self.checked_ok()
1248
self.checked_ok()
890
1249
891
1250
# Enable - method
892
1251
@dbus.service.method(_interface)
913
1272
914
1273
## Properties
915
1274
916
# approved_pending - property
917
@dbus_service_property(_interface, signature=u"b", access=u"read")
918
def approved_pending_dbus_property(self):
1275
# ApprovalPending - property
1276
@dbus_service_property(_interface, signature="b", access="read")
1277
def ApprovalPending_dbus_property(self):
919
1278
return dbus.Boolean(bool(self.approvals_pending))
920
1279
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):
1280
# ApprovedByDefault - property
1281
@dbus_service_property(_interface, signature="b",
1282
access="readwrite")
1283
def ApprovedByDefault_dbus_property(self, value=None):
1284
if value is None: # get
1285
return dbus.Boolean(self.approved_by_default)
1286
self.approved_by_default = bool(value)
1287
1288
# ApprovalDelay - property
1289
@dbus_service_property(_interface, signature="t",
1290
access="readwrite")
1291
def ApprovalDelay_dbus_property(self, value=None):
1292
if value is None: # get
1293
return dbus.UInt64(self.approval_delay_milliseconds())
1294
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1295
1296
# ApprovalDuration - property
1297
@dbus_service_property(_interface, signature="t",
1298
access="readwrite")
1299
def ApprovalDuration_dbus_property(self, value=None):
1300
if value is None: # get
1301
return dbus.UInt64(timedelta_to_milliseconds(
1302
self.approval_duration))
1303
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1304
1305
# Name - property
1306
@dbus_service_property(_interface, signature="s", access="read")
1307
def Name_dbus_property(self):
943
1308
return dbus.String(self.name)
944
1309
945
# fingerprint - property
946
@dbus_service_property(_interface, signature=u"s", access=u"read")
947
def fingerprint_dbus_property(self):
1310
# Fingerprint - property
1311
@dbus_service_property(_interface, signature="s", access="read")
1312
def Fingerprint_dbus_property(self):
948
1313
return dbus.String(self.fingerprint)
949
1314
950
# host - property
951
@dbus_service_property(_interface, signature=u"s",
952
access=u"readwrite")
953
def host_dbus_property(self, value=None):
1315
# Host - property
1316
@dbus_service_property(_interface, signature="s",
1317
access="readwrite")
1318
def Host_dbus_property(self, value=None):
954
1319
if value is None: # get
955
1320
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):
1321
self.host = unicode(value)
1322
1323
# Created - property
1324
@dbus_service_property(_interface, signature="s", access="read")
1325
def Created_dbus_property(self):
1326
return datetime_to_dbus(self.created)
1327
1328
# LastEnabled - property
1329
@dbus_service_property(_interface, signature="s", access="read")
1330
def LastEnabled_dbus_property(self):
1331
return datetime_to_dbus(self.last_enabled)
1332
1333
# Enabled - property
1334
@dbus_service_property(_interface, signature="b",
1335
access="readwrite")
1336
def Enabled_dbus_property(self, value=None):
977
1337
if value is None: # get
978
1338
return dbus.Boolean(self.enabled)
979
1339
if value:
981
1341
else:
982
1342
self.disable()
983
1343
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):
1344
# LastCheckedOK - property
1345
@dbus_service_property(_interface, signature="s",
1346
access="readwrite")
1347
def LastCheckedOK_dbus_property(self, value=None):
988
1348
if value is not None:
989
1349
self.checked_ok()
990
1350
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):
1351
return datetime_to_dbus(self.last_checked_ok)
1352
1353
# Expires - property
1354
@dbus_service_property(_interface, signature="s", access="read")
1355
def Expires_dbus_property(self):
1356
return datetime_to_dbus(self.expires)
1357
1358
# LastApprovalRequest - property
1359
@dbus_service_property(_interface, signature="s", access="read")
1360
def LastApprovalRequest_dbus_property(self):
1361
return datetime_to_dbus(self.last_approval_request)
1362
1363
# Timeout - property
1364
@dbus_service_property(_interface, signature="t",
1365
access="readwrite")
1366
def Timeout_dbus_property(self, value=None):
1000
1367
if value is None: # get
1001
1368
return dbus.UInt64(self.timeout_milliseconds())
1002
1369
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
1370
# 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):
1371
if self.enabled:
1372
now = datetime.datetime.utcnow()
1373
time_to_die = timedelta_to_milliseconds(
1374
(self.last_checked_ok + self.timeout) - now)
1375
if time_to_die <= 0:
1376
# The timeout has passed
1377
self.disable()
1378
else:
1379
self.expires = (now +
1380
datetime.timedelta(milliseconds =
1381
time_to_die))
1382
if (getattr(self, "disable_initiator_tag", None)
1383
is None):
1384
return
1385
gobject.source_remove(self.disable_initiator_tag)
1386
self.disable_initiator_tag = (gobject.timeout_add
1387
(time_to_die,
1388
self.disable))
1389
1390
# ExtendedTimeout - property
1391
@dbus_service_property(_interface, signature="t",
1392
access="readwrite")
1393
def ExtendedTimeout_dbus_property(self, value=None):
1394
if value is None: # get
1395
return dbus.UInt64(self.extended_timeout_milliseconds())
1396
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1397
1398
# Interval - property
1399
@dbus_service_property(_interface, signature="t",
1400
access="readwrite")
1401
def Interval_dbus_property(self, value=None):
1028
1402
if value is None: # get
1029
1403
return dbus.UInt64(self.interval_milliseconds())
1030
1404
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:
1405
if getattr(self, "checker_initiator_tag", None) is None:
1035
1406
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):
1407
if self.enabled:
1408
# Reschedule checker run
1409
gobject.source_remove(self.checker_initiator_tag)
1410
self.checker_initiator_tag = (gobject.timeout_add
1411
(value, self.start_checker))
1412
self.start_checker() # Start one now, too
1413
1414
# Checker - property
1415
@dbus_service_property(_interface, signature="s",
1416
access="readwrite")
1417
def Checker_dbus_property(self, value=None):
1046
1418
if value is None: # get
1047
1419
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))
1420
self.checker_command = unicode(value)
1053
1421
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):
1422
# CheckerRunning - property
1423
@dbus_service_property(_interface, signature="b",
1424
access="readwrite")
1425
def CheckerRunning_dbus_property(self, value=None):
1058
1426
if value is None: # get
1059
1427
return dbus.Boolean(self.checker is not None)
1060
1428
if value:
1062
1430
else:
1063
1431
self.stop_checker()
1064
1432
1065
# object_path - property
1066
@dbus_service_property(_interface, signature=u"o", access=u"read")
1067
def object_path_dbus_property(self):
1433
# ObjectPath - property
1434
@dbus_service_property(_interface, signature="o", access="read")
1435
def ObjectPath_dbus_property(self):
1068
1436
return self.dbus_object_path # is already a dbus.ObjectPath
1069
1437
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):
1438
# Secret = property
1439
@dbus_service_property(_interface, signature="ay",
1440
access="write", byte_arrays=True)
1441
def Secret_dbus_property(self, value):
1074
1442
self.secret = str(value)
1075
1443
1076
1444
del _interface
1082
1450
self._pipe.send(('init', fpr, address))
1083
1451
if not self._pipe.recv():
1084
1452
raise KeyError()
1085
1453
1086
1454
def __getattribute__(self, name):
1087
if(name == '_pipe'):
1455
if name == '_pipe':
1088
1456
return super(ProxyClient, self).__getattribute__(name)
1089
1457
self._pipe.send(('getattr', name))
1090
1458
data = self._pipe.recv()
1095
1463
self._pipe.send(('funcall', name, args, kwargs))
1096
1464
return self._pipe.recv()[1]
1097
1465
return func
1098
1466
1099
1467
def __setattr__(self, name, value):
1100
if(name == '_pipe'):
1468
if name == '_pipe':
1101
1469
return super(ProxyClient, self).__setattr__(name, value)
1102
1470
self._pipe.send(('setattr', name, value))
1103
1471
1104
1472
1473
class ClientDBusTransitional(ClientDBus):
1474
__metaclass__ = AlternateDBusNamesMetaclass
1475
1476
1105
1477
class ClientHandler(socketserver.BaseRequestHandler, object):
1106
1478
"""A class to handle client connections.
1107
1479
1110
1482
1111
1483
def handle(self):
1112
1484
with contextlib.closing(self.server.child_pipe) as child_pipe:
1113
logger.info(u"TCP connection from: %s",
1485
logger.info("TCP connection from: %s",
1114
1486
unicode(self.client_address))
1115
logger.debug(u"Pipe FD: %d",
1487
logger.debug("Pipe FD: %d",
1116
1488
self.server.child_pipe.fileno())
1117
1489
1118
1490
session = (gnutls.connection
1119
1491
.ClientSession(self.request,
1120
1492
gnutls.connection
1121
1493
.X509Credentials()))
1122
1494
1123
1495
# Note: gnutls.connection.X509Credentials is really a
1124
1496
# generic GnuTLS certificate credentials object so long as
1125
1497
# no X.509 keys are added to it. Therefore, we can use it
1126
1498
# 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"))
1499
1500
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1501
# "+AES-256-CBC", "+SHA1",
1502
# "+COMP-NULL", "+CTYPE-OPENPGP",
1503
# "+DHE-DSS"))
1132
1504
# Use a fallback default, since this MUST be set.
1133
1505
priority = self.server.gnutls_priority
1134
1506
if priority is None:
1135
priority = u"NORMAL"
1507
priority = "NORMAL"
1136
1508
(gnutls.library.functions
1137
1509
.gnutls_priority_set_direct(session._c_object,
1138
1510
priority, None))
1139
1511
1140
1512
# Start communication using the Mandos protocol
1141
1513
# Get protocol number
1142
1514
line = self.request.makefile().readline()
1143
logger.debug(u"Protocol version: %r", line)
1515
logger.debug("Protocol version: %r", line)
1144
1516
try:
1145
1517
if int(line.strip().split()[0]) > 1:
1146
1518
raise RuntimeError
1147
except (ValueError, IndexError, RuntimeError), error:
1148
logger.error(u"Unknown protocol version: %s", error)
1519
except (ValueError, IndexError, RuntimeError) as error:
1520
logger.error("Unknown protocol version: %s", error)
1149
1521
return
1150
1522
1151
1523
# Start GnuTLS connection
1152
1524
try:
1153
1525
session.handshake()
1154
except gnutls.errors.GNUTLSError, error:
1155
logger.warning(u"Handshake failed: %s", error)
1526
except gnutls.errors.GNUTLSError as error:
1527
logger.warning("Handshake failed: %s", error)
1156
1528
# Do not run session.bye() here: the session is not
1157
1529
# established. Just abandon the request.
1158
1530
return
1159
logger.debug(u"Handshake succeeded")
1160
1531
logger.debug("Handshake succeeded")
1532
1161
1533
approval_required = False
1162
1534
try:
1163
1535
try:
1164
1536
fpr = self.fingerprint(self.peer_certificate
1165
1537
(session))
1166
except (TypeError, gnutls.errors.GNUTLSError), error:
1167
logger.warning(u"Bad certificate: %s", error)
1538
except (TypeError,
1539
gnutls.errors.GNUTLSError) as error:
1540
logger.warning("Bad certificate: %s", error)
1168
1541
return
1169
logger.debug(u"Fingerprint: %s", fpr)
1170
1542
logger.debug("Fingerprint: %s", fpr)
1543
1171
1544
try:
1172
1545
client = ProxyClient(child_pipe, fpr,
1173
1546
self.client_address)
1174
1547
except KeyError:
1175
1548
return
1176
1549
1177
if client.approved_delay:
1178
delay = client.approved_delay
1550
if self.server.use_dbus:
1551
# Emit D-Bus signal
1552
client.NewRequest(str(self.client_address))
1553
1554
if client.approval_delay:
1555
delay = client.approval_delay
1179
1556
client.approvals_pending += 1
1180
1557
approval_required = True
1181
1558
1182
1559
while True:
1183
1560
if not client.enabled:
1184
logger.warning(u"Client %s is disabled",
1561
logger.info("Client %s is disabled",
1185
1562
client.name)
1186
1563
if self.server.use_dbus:
1187
1564
# Emit D-Bus signal
1188
client.Rejected("Disabled")
1565
client.Rejected("Disabled")
1189
1566
return
1190
1567
1191
if client._approved or not client.approved_delay:
1568
if client.approved or not client.approval_delay:
1192
1569
#We are approved or approval is disabled
1193
1570
break
1194
elif client._approved is None:
1195
logger.info(u"Client %s need approval",
1571
elif client.approved is None:
1572
logger.info("Client %s needs approval",
1196
1573
client.name)
1197
1574
if self.server.use_dbus:
1198
1575
# Emit D-Bus signal
1199
1576
client.NeedApproval(
1200
client.approved_delay_milliseconds(),
1577
client.approval_delay_milliseconds(),
1201
1578
client.approved_by_default)
1202
1579
else:
1203
logger.warning(u"Client %s was not approved",
1580
logger.warning("Client %s was not approved",
1204
1581
client.name)
1205
1582
if self.server.use_dbus:
1206
1583
# Emit D-Bus signal
1207
client.Rejected("Disapproved")
1584
client.Rejected("Denied")
1208
1585
return
1209
1586
1210
1587
#wait until timeout or approved
1211
#x = float(client._timedelta_to_milliseconds(delay))
1212
1588
time = datetime.datetime.now()
1213
1589
client.changedstate.acquire()
1214
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
1590
(client.changedstate.wait
1591
(float(client.timedelta_to_milliseconds(delay)
1592
/ 1000)))
1215
1593
client.changedstate.release()
1216
1594
time2 = datetime.datetime.now()
1217
1595
if (time2 - time) >= delay:
1221
1599
client.name)
1222
1600
if self.server.use_dbus:
1223
1601
# Emit D-Bus signal
1224
client.Rejected("Time out")
1602
client.Rejected("Approval timed out")
1225
1603
return
1226
1604
else:
1227
1605
break
1232
1610
while sent_size < len(client.secret):
1233
1611
try:
1234
1612
sent = session.send(client.secret[sent_size:])
1235
except (gnutls.errors.GNUTLSError), error:
1613
except gnutls.errors.GNUTLSError as error:
1236
1614
logger.warning("gnutls send failed")
1237
1615
return
1238
logger.debug(u"Sent: %d, remaining: %d",
1616
logger.debug("Sent: %d, remaining: %d",
1239
1617
sent, len(client.secret)
1240
1618
- (sent_size + sent))
1241
1619
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()
1620
1621
logger.info("Sending secret to %s", client.name)
1622
# bump the timeout using extended_timeout
1623
client.checked_ok(client.extended_timeout)
1246
1624
if self.server.use_dbus:
1247
1625
# Emit D-Bus signal
1248
1626
client.GotSecret()
1252
1630
client.approvals_pending -= 1
1253
1631
try:
1254
1632
session.bye()
1255
except (gnutls.errors.GNUTLSError), error:
1256
logger.warning("gnutls bye failed")
1633
except gnutls.errors.GNUTLSError as error:
1634
logger.warning("GnuTLS bye failed")
1257
1635
1258
1636
@staticmethod
1259
1637
def peer_certificate(session):
1269
1647
.gnutls_certificate_get_peers
1270
1648
(session._c_object, ctypes.byref(list_size)))
1271
1649
if not bool(cert_list) and list_size.value != 0:
1272
raise gnutls.errors.GNUTLSError(u"error getting peer"
1273
u" certificate")
1650
raise gnutls.errors.GNUTLSError("error getting peer"
1651
" certificate")
1274
1652
if list_size.value == 0:
1275
1653
return None
1276
1654
cert = cert_list[0]
1302
1680
if crtverify.value != 0:
1303
1681
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1304
1682
raise (gnutls.errors.CertificateSecurityError
1305
(u"Verify failed"))
1683
("Verify failed"))
1306
1684
# New buffer for the fingerprint
1307
1685
buf = ctypes.create_string_buffer(20)
1308
1686
buf_len = ctypes.c_size_t()
1315
1693
# Convert the buffer to a Python bytestring
1316
1694
fpr = ctypes.string_at(buf, buf_len.value)
1317
1695
# Convert the bytestring to hexadecimal notation
1318
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1696
hex_fpr = binascii.hexlify(fpr).upper()
1319
1697
return hex_fpr
1320
1698
1321
1699
1324
1702
def sub_process_main(self, request, address):
1325
1703
try:
1326
1704
self.finish_request(request, address)
1327
except:
1705
except Exception:
1328
1706
self.handle_error(request, address)
1329
1707
self.close_request(request)
1330
1708
1331
1709
def process_request(self, request, address):
1332
1710
"""Start a new process to process the request."""
1333
multiprocessing.Process(target = self.sub_process_main,
1334
args = (request, address)).start()
1711
proc = multiprocessing.Process(target = self.sub_process_main,
1712
args = (request,
1713
address))
1714
proc.start()
1715
return proc
1716
1335
1717
1336
1718
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1337
1719
""" adds a pipe to the MixIn """
1341
1723
This function creates a new pipe in self.pipe
1342
1724
"""
1343
1725
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1344
1345
super(MultiprocessingMixInWithPipe,
1346
self).process_request(request, client_address)
1726
1727
proc = MultiprocessingMixIn.process_request(self, request,
1728
client_address)
1347
1729
self.child_pipe.close()
1348
self.add_pipe(parent_pipe)
1349
1350
def add_pipe(self, parent_pipe):
1730
self.add_pipe(parent_pipe, proc)
1731
1732
def add_pipe(self, parent_pipe, proc):
1351
1733
"""Dummy function; override as necessary"""
1352
pass
1734
raise NotImplementedError
1735
1353
1736
1354
1737
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1355
1738
socketserver.TCPServer, object):
1373
1756
bind to an address or port if they were not specified."""
1374
1757
if self.interface is not None:
1375
1758
if SO_BINDTODEVICE is None:
1376
logger.error(u"SO_BINDTODEVICE does not exist;"
1377
u" cannot bind to interface %s",
1759
logger.error("SO_BINDTODEVICE does not exist;"
1760
" cannot bind to interface %s",
1378
1761
self.interface)
1379
1762
else:
1380
1763
try:
1381
1764
self.socket.setsockopt(socket.SOL_SOCKET,
1382
1765
SO_BINDTODEVICE,
1383
1766
str(self.interface
1384
+ u'\0'))
1385
except socket.error, error:
1767
+ '\0'))
1768
except socket.error as error:
1386
1769
if error[0] == errno.EPERM:
1387
logger.error(u"No permission to"
1388
u" bind to interface %s",
1770
logger.error("No permission to"
1771
" bind to interface %s",
1389
1772
self.interface)
1390
1773
elif error[0] == errno.ENOPROTOOPT:
1391
logger.error(u"SO_BINDTODEVICE not available;"
1392
u" cannot bind to interface %s",
1774
logger.error("SO_BINDTODEVICE not available;"
1775
" cannot bind to interface %s",
1393
1776
self.interface)
1394
1777
else:
1395
1778
raise
1397
1780
if self.server_address[0] or self.server_address[1]:
1398
1781
if not self.server_address[0]:
1399
1782
if self.address_family == socket.AF_INET6:
1400
any_address = u"::" # in6addr_any
1783
any_address = "::" # in6addr_any
1401
1784
else:
1402
1785
any_address = socket.INADDR_ANY
1403
1786
self.server_address = (any_address,
1430
1813
self.enabled = False
1431
1814
self.clients = clients
1432
1815
if self.clients is None:
1433
self.clients = set()
1816
self.clients = {}
1434
1817
self.use_dbus = use_dbus
1435
1818
self.gnutls_priority = gnutls_priority
1436
1819
IPv6_TCPServer.__init__(self, server_address,
1440
1823
def server_activate(self):
1441
1824
if self.enabled:
1442
1825
return socketserver.TCPServer.server_activate(self)
1826
1443
1827
def enable(self):
1444
1828
self.enabled = True
1445
def add_pipe(self, parent_pipe):
1829
1830
def add_pipe(self, parent_pipe, proc):
1446
1831
# Call "handle_ipc" for both data and EOF events
1447
1832
gobject.io_add_watch(parent_pipe.fileno(),
1448
1833
gobject.IO_IN | gobject.IO_HUP,
1449
1834
functools.partial(self.handle_ipc,
1450
parent_pipe = parent_pipe))
1451
1835
parent_pipe =
1836
parent_pipe,
1837
proc = proc))
1838
1452
1839
def handle_ipc(self, source, condition, parent_pipe=None,
1453
client_object=None):
1840
proc = None, client_object=None):
1454
1841
condition_names = {
1455
gobject.IO_IN: u"IN", # There is data to read.
1456
gobject.IO_OUT: u"OUT", # Data can be written (without
1842
gobject.IO_IN: "IN", # There is data to read.
1843
gobject.IO_OUT: "OUT", # Data can be written (without
1457
1844
# 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
1845
gobject.IO_PRI: "PRI", # There is urgent data to read.
1846
gobject.IO_ERR: "ERR", # Error condition.
1847
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1461
1848
# broken, usually for pipes and
1462
1849
# sockets).
1463
1850
}
1465
1852
for cond, name in
1466
1853
condition_names.iteritems()
1467
1854
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
1855
# error, or the other end of multiprocessing.Pipe has closed
1472
1856
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
1857
# Wait for other process to exit
1858
proc.join()
1473
1859
return False
1474
1860
1475
1861
# Read a request from the child
1476
1862
request = parent_pipe.recv()
1477
logger.debug(u"IPC request: %s", repr(request))
1478
1863
command = request[0]
1479
1864
1480
1865
if command == 'init':
1481
1866
fpr = request[1]
1482
1867
address = request[2]
1483
1868
1484
for c in self.clients:
1869
for c in self.clients.itervalues():
1485
1870
if c.fingerprint == fpr:
1486
1871
client = c
1487
1872
break
1488
1873
else:
1489
logger.warning(u"Client not found for fingerprint: %s, ad"
1490
u"dress: %s", fpr, address)
1874
logger.info("Client not found for fingerprint: %s, ad"
1875
"dress: %s", fpr, address)
1491
1876
if self.use_dbus:
1492
1877
# Emit D-Bus signal
1493
mandos_dbus_service.ClientNotFound(fpr, address)
1878
mandos_dbus_service.ClientNotFound(fpr,
1879
address[0])
1494
1880
parent_pipe.send(False)
1495
1881
return False
1496
1882
1497
1883
gobject.io_add_watch(parent_pipe.fileno(),
1498
1884
gobject.IO_IN | gobject.IO_HUP,
1499
1885
functools.partial(self.handle_ipc,
1500
parent_pipe = parent_pipe,
1501
client_object = client))
1886
parent_pipe =
1887
parent_pipe,
1888
proc = proc,
1889
client_object =
1890
client))
1502
1891
parent_pipe.send(True)
1503
# remove the old hook in favor of the new above hook on same fileno
1892
# remove the old hook in favor of the new above hook on
1893
# same fileno
1504
1894
return False
1505
1895
if command == 'funcall':
1506
1896
funcname = request[1]
1507
1897
args = request[2]
1508
1898
kwargs = request[3]
1509
1899
1510
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
1511
1900
parent_pipe.send(('data', getattr(client_object,
1901
funcname)(*args,
1902
**kwargs)))
1903
1512
1904
if command == 'getattr':
1513
1905
attrname = request[1]
1514
1906
if callable(client_object.__getattribute__(attrname)):
1515
1907
parent_pipe.send(('function',))
1516
1908
else:
1517
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
1909
parent_pipe.send(('data', client_object
1910
.__getattribute__(attrname)))
1518
1911
1519
1912
if command == 'setattr':
1520
1913
attrname = request[1]
1521
1914
value = request[2]
1522
1915
setattr(client_object, attrname, value)
1523
1916
1524
1917
return True
1525
1918
1526
1919
1527
1920
def string_to_delta(interval):
1528
1921
"""Parse a string and return a datetime.timedelta
1529
1922
1530
>>> string_to_delta(u'7d')
1923
>>> string_to_delta('7d')
1531
1924
datetime.timedelta(7)
1532
>>> string_to_delta(u'60s')
1925
>>> string_to_delta('60s')
1533
1926
datetime.timedelta(0, 60)
1534
>>> string_to_delta(u'60m')
1927
>>> string_to_delta('60m')
1535
1928
datetime.timedelta(0, 3600)
1536
>>> string_to_delta(u'24h')
1929
>>> string_to_delta('24h')
1537
1930
datetime.timedelta(1)
1538
>>> string_to_delta(u'1w')
1931
>>> string_to_delta('1w')
1539
1932
datetime.timedelta(7)
1540
>>> string_to_delta(u'5m 30s')
1933
>>> string_to_delta('5m 30s')
1541
1934
datetime.timedelta(0, 330)
1542
1935
"""
1543
1936
timevalue = datetime.timedelta(0)
1545
1938
try:
1546
1939
suffix = unicode(s[-1])
1547
1940
value = int(s[:-1])
1548
if suffix == u"d":
1941
if suffix == "d":
1549
1942
delta = datetime.timedelta(value)
1550
elif suffix == u"s":
1943
elif suffix == "s":
1551
1944
delta = datetime.timedelta(0, value)
1552
elif suffix == u"m":
1945
elif suffix == "m":
1553
1946
delta = datetime.timedelta(0, 0, 0, 0, value)
1554
elif suffix == u"h":
1947
elif suffix == "h":
1555
1948
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1556
elif suffix == u"w":
1949
elif suffix == "w":
1557
1950
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1558
1951
else:
1559
raise ValueError(u"Unknown suffix %r" % suffix)
1560
except (ValueError, IndexError), e:
1561
raise ValueError(e.message)
1952
raise ValueError("Unknown suffix %r" % suffix)
1953
except (ValueError, IndexError) as e:
1954
raise ValueError(*(e.args))
1562
1955
timevalue += delta
1563
1956
return timevalue
1564
1957
1565
1958
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
1959
def daemon(nochdir = False, noclose = False):
1591
1960
"""See daemon(3). Standard BSD Unix function.
1592
1961
1595
1964
sys.exit()
1596
1965
os.setsid()
1597
1966
if not nochdir:
1598
os.chdir(u"/")
1967
os.chdir("/")
1599
1968
if os.fork():
1600
1969
sys.exit()
1601
1970
if not noclose:
1603
1972
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1604
1973
if not stat.S_ISCHR(os.fstat(null).st_mode):
1605
1974
raise OSError(errno.ENODEV,
1606
u"%s not a character device"
1975
"%s not a character device"
1607
1976
% os.path.devnull)
1608
1977
os.dup2(null, sys.stdin.fileno())
1609
1978
os.dup2(null, sys.stdout.fileno())
1617
1986
##################################################################
1618
1987
# Parsing of options, both command line and config file
1619
1988
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]
1989
parser = argparse.ArgumentParser()
1990
parser.add_argument("-v", "--version", action="version",
1991
version = "%%(prog)s %s" % version,
1992
help="show version number and exit")
1993
parser.add_argument("-i", "--interface", metavar="IF",
1994
help="Bind to interface IF")
1995
parser.add_argument("-a", "--address",
1996
help="Address to listen for requests on")
1997
parser.add_argument("-p", "--port", type=int,
1998
help="Port number to receive requests on")
1999
parser.add_argument("--check", action="store_true",
2000
help="Run self-test")
2001
parser.add_argument("--debug", action="store_true",
2002
help="Debug mode; run in foreground and log"
2003
" to terminal")
2004
parser.add_argument("--debuglevel", metavar="LEVEL",
2005
help="Debug level for stdout output")
2006
parser.add_argument("--priority", help="GnuTLS"
2007
" priority string (see GnuTLS documentation)")
2008
parser.add_argument("--servicename",
2009
metavar="NAME", help="Zeroconf service name")
2010
parser.add_argument("--configdir",
2011
default="/etc/mandos", metavar="DIR",
2012
help="Directory to search for configuration"
2013
" files")
2014
parser.add_argument("--no-dbus", action="store_false",
2015
dest="use_dbus", help="Do not provide D-Bus"
2016
" system bus interface")
2017
parser.add_argument("--no-ipv6", action="store_false",
2018
dest="use_ipv6", help="Do not use IPv6")
2019
parser.add_argument("--no-restore", action="store_false",
2020
dest="restore", help="Do not restore stored"
2021
" state")
2022
parser.add_argument("--statedir", metavar="DIR",
2023
help="Directory to save/restore state in")
2024
2025
options = parser.parse_args()
1648
2026
1649
2027
if options.check:
1650
2028
import doctest
1652
2030
sys.exit()
1653
2031
1654
2032
# 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"",
2033
server_defaults = { "interface": "",
2034
"address": "",
2035
"port": "",
2036
"debug": "False",
2037
"priority":
2038
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2039
"servicename": "Mandos",
2040
"use_dbus": "True",
2041
"use_ipv6": "True",
2042
"debuglevel": "",
2043
"restore": "True",
2044
"statedir": "/var/lib/mandos"
1665
2045
}
1666
2046
1667
2047
# Parse config file for server-global settings
1668
2048
server_config = configparser.SafeConfigParser(server_defaults)
1669
2049
del server_defaults
1670
2050
server_config.read(os.path.join(options.configdir,
1671
u"mandos.conf"))
2051
"mandos.conf"))
1672
2052
# Convert the SafeConfigParser object to a dict
1673
2053
server_settings = server_config.defaults()
1674
2054
# 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",
2055
for option in ("debug", "use_dbus", "use_ipv6"):
2056
server_settings[option] = server_config.getboolean("DEFAULT",
1677
2057
option)
1678
2058
if server_settings["port"]:
1679
server_settings["port"] = server_config.getint(u"DEFAULT",
1680
u"port")
2059
server_settings["port"] = server_config.getint("DEFAULT",
2060
"port")
1681
2061
del server_config
1682
2062
1683
2063
# Override the settings from the config file with command line
1684
2064
# 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"):
2065
for option in ("interface", "address", "port", "debug",
2066
"priority", "servicename", "configdir",
2067
"use_dbus", "use_ipv6", "debuglevel", "restore",
2068
"statedir"):
1688
2069
value = getattr(options, option)
1689
2070
if value is not None:
1690
2071
server_settings[option] = value
1698
2079
##################################################################
1699
2080
1700
2081
# 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":
2082
debug = server_settings["debug"]
2083
debuglevel = server_settings["debuglevel"]
2084
use_dbus = server_settings["use_dbus"]
2085
use_ipv6 = server_settings["use_ipv6"]
2086
stored_state_path = os.path.join(server_settings["statedir"],
2087
stored_state_file)
2088
2089
if debug:
2090
initlogger(debug, logging.DEBUG)
2091
else:
2092
if not debuglevel:
2093
initlogger(debug)
2094
else:
2095
level = getattr(logging, debuglevel.upper())
2096
initlogger(debug, level)
2097
2098
if server_settings["servicename"] != "Mandos":
1707
2099
syslogger.setFormatter(logging.Formatter
1708
(u'Mandos (%s) [%%(process)d]:'
1709
u' %%(levelname)s: %%(message)s'
1710
% server_settings[u"servicename"]))
2100
('Mandos (%s) [%%(process)d]:'
2101
' %%(levelname)s: %%(message)s'
2102
% server_settings["servicename"]))
1711
2103
1712
2104
# 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"))
2105
client_config = configparser.SafeConfigParser(Client
2106
.client_defaults)
2107
client_config.read(os.path.join(server_settings["configdir"],
2108
"clients.conf"))
1723
2109
1724
2110
global mandos_dbus_service
1725
2111
mandos_dbus_service = None
1726
2112
1727
tcp_server = MandosServer((server_settings[u"address"],
1728
server_settings[u"port"]),
2113
tcp_server = MandosServer((server_settings["address"],
2114
server_settings["port"]),
1729
2115
ClientHandler,
1730
interface=server_settings[u"interface"],
2116
interface=(server_settings["interface"]
2117
or None),
1731
2118
use_ipv6=use_ipv6,
1732
2119
gnutls_priority=
1733
server_settings[u"priority"],
2120
server_settings["priority"],
1734
2121
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)
2122
if not debug:
2123
pidfilename = "/var/run/mandos.pid"
2124
try:
2125
pidfile = open(pidfilename, "w")
2126
except IOError:
2127
logger.error("Could not open file %r", pidfilename)
1740
2128
1741
2129
try:
1742
uid = pwd.getpwnam(u"_mandos").pw_uid
1743
gid = pwd.getpwnam(u"_mandos").pw_gid
2130
uid = pwd.getpwnam("_mandos").pw_uid
2131
gid = pwd.getpwnam("_mandos").pw_gid
1744
2132
except KeyError:
1745
2133
try:
1746
uid = pwd.getpwnam(u"mandos").pw_uid
1747
gid = pwd.getpwnam(u"mandos").pw_gid
2134
uid = pwd.getpwnam("mandos").pw_uid
2135
gid = pwd.getpwnam("mandos").pw_gid
1748
2136
except KeyError:
1749
2137
try:
1750
uid = pwd.getpwnam(u"nobody").pw_uid
1751
gid = pwd.getpwnam(u"nobody").pw_gid
2138
uid = pwd.getpwnam("nobody").pw_uid
2139
gid = pwd.getpwnam("nobody").pw_gid
1752
2140
except KeyError:
1753
2141
uid = 65534
1754
2142
gid = 65534
1755
2143
try:
1756
2144
os.setgid(gid)
1757
2145
os.setuid(uid)
1758
except OSError, error:
2146
except OSError as error:
1759
2147
if error[0] != errno.EPERM:
1760
2148
raise error
1761
2149
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
2150
if debug:
2151
# Enable all possible GnuTLS debugging
2152
1774
2153
# "Use a log level over 10 to enable all debugging options."
1775
2154
# - GnuTLS manual
1776
2155
gnutls.library.functions.gnutls_global_set_log_level(11)
1777
2156
1778
2157
@gnutls.library.types.gnutls_log_func
1779
2158
def debug_gnutls(level, string):
1780
logger.debug(u"GnuTLS: %s", string[:-1])
2159
logger.debug("GnuTLS: %s", string[:-1])
1781
2160
1782
2161
(gnutls.library.functions
1783
2162
.gnutls_global_set_log_function(debug_gnutls))
1784
2163
1785
2164
# Redirect stdin so all checkers get /dev/null
1786
2165
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1787
2166
os.dup2(null, sys.stdin.fileno())
1788
2167
if null > 2:
1789
2168
os.close(null)
1790
else:
1791
# No console logging
1792
logger.removeHandler(console)
1793
2169
2170
# Need to fork before connecting to D-Bus
2171
if not debug:
2172
# Close all input and output, do double fork, etc.
2173
daemon()
2174
2175
gobject.threads_init()
1794
2176
1795
2177
global main_loop
1796
2178
# From the Avahi example code
1800
2182
# End of Avahi example code
1801
2183
if use_dbus:
1802
2184
try:
1803
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
2185
bus_name = dbus.service.BusName("se.recompile.Mandos",
1804
2186
bus, do_not_queue=True)
1805
except dbus.exceptions.NameExistsException, e:
1806
logger.error(unicode(e) + u", disabling D-Bus")
2187
old_bus_name = (dbus.service.BusName
2188
("se.bsnet.fukt.Mandos", bus,
2189
do_not_queue=True))
2190
except dbus.exceptions.NameExistsException as e:
2191
logger.error(unicode(e) + ", disabling D-Bus")
1807
2192
use_dbus = False
1808
server_settings[u"use_dbus"] = False
2193
server_settings["use_dbus"] = False
1809
2194
tcp_server.use_dbus = False
1810
2195
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)
2196
service = AvahiServiceToSyslog(name =
2197
server_settings["servicename"],
2198
servicetype = "_mandos._tcp",
2199
protocol = protocol, bus = bus)
1814
2200
if server_settings["interface"]:
1815
2201
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
2202
(str(server_settings["interface"])))
2203
1822
2204
global multiprocessing_manager
1823
2205
multiprocessing_manager = multiprocessing.Manager()
1824
2206
1825
2207
client_class = Client
1826
2208
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):
2209
client_class = functools.partial(ClientDBusTransitional,
2210
bus = bus)
2211
2212
client_settings = Client.config_parser(client_config)
2213
old_client_settings = {}
2214
clients_data = {}
2215
2216
# Get client data and settings from last running state.
2217
if server_settings["restore"]:
2218
try:
2219
with open(stored_state_path, "rb") as stored_state:
2220
clients_data, old_client_settings = (pickle.load
2221
(stored_state))
2222
os.remove(stored_state_path)
2223
except IOError as e:
2224
logger.warning("Could not load persistent state: {0}"
2225
.format(e))
2226
if e.errno != errno.ENOENT:
2227
raise
2228
except EOFError as e:
2229
logger.warning("Could not load persistent state: "
2230
"EOFError: {0}".format(e))
2231
2232
with PGPEngine() as pgp:
2233
for client_name, client in clients_data.iteritems():
2234
# Decide which value to use after restoring saved state.
2235
# We have three different values: Old config file,
2236
# new config file, and saved state.
2237
# New config value takes precedence if it differs from old
2238
# config value, otherwise use saved state.
2239
for name, value in client_settings[client_name].items():
2240
try:
2241
# For each value in new config, check if it
2242
# differs from the old config value (Except for
2243
# the "secret" attribute)
2244
if (name != "secret" and
2245
value != old_client_settings[client_name]
2246
[name]):
2247
client[name] = value
2248
except KeyError:
2249
pass
2250
2251
# Clients who has passed its expire date can still be
2252
# enabled if its last checker was successful. Clients
2253
# whose checker failed before we stored its state is
2254
# assumed to have failed all checkers during downtime.
2255
if client["enabled"]:
2256
if datetime.datetime.utcnow() >= client["expires"]:
2257
if not client["last_checked_ok"]:
2258
logger.warning(
2259
"disabling client {0} - Client never "
2260
"performed a successfull checker"
2261
.format(client["name"]))
2262
client["enabled"] = False
2263
elif client["last_checker_status"] != 0:
2264
logger.warning(
2265
"disabling client {0} - Client "
2266
"last checker failed with error code {1}"
2267
.format(client["name"],
2268
client["last_checker_status"]))
2269
client["enabled"] = False
2270
else:
2271
client["expires"] = (datetime.datetime
2272
.utcnow()
2273
+ client["timeout"])
2274
logger.debug("Last checker succeeded,"
2275
" keeping {0} enabled"
2276
.format(client["name"]))
1835
2277
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()))
2278
client["secret"] = (
2279
pgp.decrypt(client["encrypted_secret"],
2280
client_settings[client_name]
2281
["secret"]))
2282
except PGPError:
2283
# If decryption fails, we use secret from new settings
2284
logger.debug("Failed to decrypt {0} old secret"
2285
.format(client_name))
2286
client["secret"] = (
2287
client_settings[client_name]["secret"])
2288
2289
2290
# Add/remove clients based on new changes made to config
2291
for client_name in (set(old_client_settings)
2292
- set(client_settings)):
2293
del clients_data[client_name]
2294
for client_name in (set(client_settings)
2295
- set(old_client_settings)):
2296
clients_data[client_name] = client_settings[client_name]
2297
2298
# Create clients all clients
2299
for client_name, client in clients_data.iteritems():
2300
tcp_server.clients[client_name] = client_class(
2301
name = client_name, settings = client)
2302
1845
2303
if not tcp_server.clients:
1846
logger.warning(u"No clients defined")
2304
logger.warning("No clients defined")
1847
2305
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
2306
if not debug:
2307
try:
2308
with pidfile:
2309
pid = os.getpid()
2310
pidfile.write(str(pid) + "\n".encode("utf-8"))
2311
del pidfile
2312
except IOError:
2313
logger.error("Could not write to file %r with PID %d",
2314
pidfilename, pid)
2315
except NameError:
2316
# "pidfile" was never created
2317
pass
2318
del pidfilename
1862
2319
signal.signal(signal.SIGINT, signal.SIG_IGN)
2320
1863
2321
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1864
2322
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1865
2323
1867
2325
class MandosDBusService(dbus.service.Object):
1868
2326
"""A D-Bus proxy object"""
1869
2327
def __init__(self):
1870
dbus.service.Object.__init__(self, bus, u"/")
1871
_interface = u"se.bsnet.fukt.Mandos"
2328
dbus.service.Object.__init__(self, bus, "/")
2329
_interface = "se.recompile.Mandos"
1872
2330
1873
@dbus.service.signal(_interface, signature=u"o")
2331
@dbus.service.signal(_interface, signature="o")
1874
2332
def ClientAdded(self, objpath):
1875
2333
"D-Bus signal"
1876
2334
pass
1877
2335
1878
@dbus.service.signal(_interface, signature=u"ss")
2336
@dbus.service.signal(_interface, signature="ss")
1879
2337
def ClientNotFound(self, fingerprint, address):
1880
2338
"D-Bus signal"
1881
2339
pass
1882
2340
1883
@dbus.service.signal(_interface, signature=u"os")
2341
@dbus.service.signal(_interface, signature="os")
1884
2342
def ClientRemoved(self, objpath, name):
1885
2343
"D-Bus signal"
1886
2344
pass
1887
2345
1888
@dbus.service.method(_interface, out_signature=u"ao")
2346
@dbus.service.method(_interface, out_signature="ao")
1889
2347
def GetAllClients(self):
1890
2348
"D-Bus method"
1891
2349
return dbus.Array(c.dbus_object_path
1892
for c in tcp_server.clients)
2350
for c in
2351
tcp_server.clients.itervalues())
1893
2352
1894
2353
@dbus.service.method(_interface,
1895
out_signature=u"a{oa{sv}}")
2354
out_signature="a{oa{sv}}")
1896
2355
def GetAllClientsWithProperties(self):
1897
2356
"D-Bus method"
1898
2357
return dbus.Dictionary(
1899
((c.dbus_object_path, c.GetAll(u""))
1900
for c in tcp_server.clients),
1901
signature=u"oa{sv}")
2358
((c.dbus_object_path, c.GetAll(""))
2359
for c in tcp_server.clients.itervalues()),
2360
signature="oa{sv}")
1902
2361
1903
@dbus.service.method(_interface, in_signature=u"o")
2362
@dbus.service.method(_interface, in_signature="o")
1904
2363
def RemoveClient(self, object_path):
1905
2364
"D-Bus method"
1906
for c in tcp_server.clients:
2365
for c in tcp_server.clients.itervalues():
1907
2366
if c.dbus_object_path == object_path:
1908
tcp_server.clients.remove(c)
2367
del tcp_server.clients[c.name]
1909
2368
c.remove_from_connection()
1910
2369
# Don't signal anything except ClientRemoved
1911
2370
c.disable(quiet=True)
1916
2375
1917
2376
del _interface
1918
2377
1919
mandos_dbus_service = MandosDBusService()
2378
class MandosDBusServiceTransitional(MandosDBusService):
2379
__metaclass__ = AlternateDBusNamesMetaclass
2380
mandos_dbus_service = MandosDBusServiceTransitional()
1920
2381
1921
2382
def cleanup():
1922
2383
"Cleanup function; run on exit"
1923
2384
service.cleanup()
1924
2385
2386
multiprocessing.active_children()
2387
if not (tcp_server.clients or client_settings):
2388
return
2389
2390
# Store client before exiting. Secrets are encrypted with key
2391
# based on what config file has. If config file is
2392
# removed/edited, old secret will thus be unrecovable.
2393
clients = {}
2394
with PGPEngine() as pgp:
2395
for client in tcp_server.clients.itervalues():
2396
key = client_settings[client.name]["secret"]
2397
client.encrypted_secret = pgp.encrypt(client.secret,
2398
key)
2399
client_dict = {}
2400
2401
# A list of attributes that can not be pickled
2402
# + secret.
2403
exclude = set(("bus", "changedstate", "secret",
2404
"checker"))
2405
for name, typ in (inspect.getmembers
2406
(dbus.service.Object)):
2407
exclude.add(name)
2408
2409
client_dict["encrypted_secret"] = (client
2410
.encrypted_secret)
2411
for attr in client.client_structure:
2412
if attr not in exclude:
2413
client_dict[attr] = getattr(client, attr)
2414
2415
clients[client.name] = client_dict
2416
del client_settings[client.name]["secret"]
2417
2418
try:
2419
tempfd, tempname = tempfile.mkstemp(suffix=".pickle",
2420
prefix="clients-",
2421
dir=os.path.dirname
2422
(stored_state_path))
2423
with os.fdopen(tempfd, "wb") as stored_state:
2424
pickle.dump((clients, client_settings), stored_state)
2425
os.rename(tempname, stored_state_path)
2426
except (IOError, OSError) as e:
2427
logger.warning("Could not save persistent state: {0}"
2428
.format(e))
2429
if not debug:
2430
try:
2431
os.remove(tempname)
2432
except NameError:
2433
pass
2434
if e.errno not in set((errno.ENOENT, errno.EACCES,
2435
errno.EEXIST)):
2436
raise e
2437
2438
# Delete all clients, and settings from config
1925
2439
while tcp_server.clients:
1926
client = tcp_server.clients.pop()
2440
name, client = tcp_server.clients.popitem()
1927
2441
if use_dbus:
1928
2442
client.remove_from_connection()
1929
client.disable_hook = None
1930
2443
# Don't signal anything except ClientRemoved
1931
2444
client.disable(quiet=True)
1932
2445
if use_dbus:
1933
2446
# Emit D-Bus signal
1934
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
2447
mandos_dbus_service.ClientRemoved(client
2448
.dbus_object_path,
1935
2449
client.name)
2450
client_settings.clear()
1936
2451
1937
2452
atexit.register(cleanup)
1938
2453
1939
for client in tcp_server.clients:
2454
for client in tcp_server.clients.itervalues():
1940
2455
if use_dbus:
1941
2456
# Emit D-Bus signal
1942
2457
mandos_dbus_service.ClientAdded(client.dbus_object_path)
1943
client.enable()
2458
# Need to initiate checking of clients
2459
if client.enabled:
2460
client.init_checker()
1944
2461
1945
2462
tcp_server.enable()
1946
2463
tcp_server.server_activate()
1948
2465
# Find out what port we got
1949
2466
service.port = tcp_server.socket.getsockname()[1]
1950
2467
if use_ipv6:
1951
logger.info(u"Now listening on address %r, port %d,"
2468
logger.info("Now listening on address %r, port %d,"
1952
2469
" flowinfo %d, scope_id %d"
1953
2470
% tcp_server.socket.getsockname())
1954
2471
else: # IPv4
1955
logger.info(u"Now listening on address %r, port %d"
2472
logger.info("Now listening on address %r, port %d"
1956
2473
% tcp_server.socket.getsockname())
1957
2474
1958
2475
#service.interface = tcp_server.socket.getsockname()[3]
1961
2478
# From the Avahi example code
1962
2479
try:
1963
2480
service.activate()
1964
except dbus.exceptions.DBusException, error:
1965
logger.critical(u"DBusException: %s", error)
2481
except dbus.exceptions.DBusException as error:
2482
logger.critical("DBusException: %s", error)
1966
2483
cleanup()
1967
2484
sys.exit(1)
1968
2485
# End of Avahi example code
1972
2489
(tcp_server.handle_request
1973
2490
(*args[2:], **kwargs) or True))
1974
2491
1975
logger.debug(u"Starting main loop")
2492
logger.debug("Starting main loop")
1976
2493
main_loop.run()
1977
except AvahiError, error:
1978
logger.critical(u"AvahiError: %s", error)
2494
except AvahiError as error:
2495
logger.critical("AvahiError: %s", error)
1979
2496
cleanup()
1980
2497
sys.exit(1)
1981
2498
except KeyboardInterrupt:
1982
2499
if debug:
1983
print >> sys.stderr
1984
logger.debug(u"Server received KeyboardInterrupt")
1985
logger.debug(u"Server exiting")
2500
print("", file=sys.stderr)
2501
logger.debug("Server received KeyboardInterrupt")
2502
logger.debug("Server exiting")
1986
2503
# Must run before the D-Bus bus name gets deregistered
1987
2504
cleanup()
1988
2505
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0