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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 = self.server.GetAlternativeServiceName(self.name)
161
logger.info(u"Changing Zeroconf service name to %r ...",
162
unicode(self.name))
163
syslogger.setFormatter(logging.Formatter
164
(u'Mandos (%s) [%%(process)d]:'
165
u' %%(levelname)s: %%(message)s'
166
% self.name))
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 ...",
274
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
#XXX Need to allow secret on demand!
308
raise TypeError(u"No secret or secfile for client %s"
309
% self.name)
310
self.host = config.get(u"host", u"")
311
self.created = datetime.datetime.utcnow()
312
self.enabled = False
313
self.last_enabled = None
314
self.last_checked_ok = None
315
self.timeout = string_to_delta(config[u"timeout"])
316
self.interval = string_to_delta(config[u"interval"])
317
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
318
537
self.checker = None
319
538
self.checker_initiator_tag = None
320
539
self.disable_initiator_tag = None
321
540
self.checker_callback_tag = None
322
self.checker_command = config[u"checker"]
323
541
self.current_checker_command = None
324
self.last_connect = None
325
self._approved = None
326
self.approved_by_default = config.get(u"approved_by_default",
327
True)
542
self.approved = None
328
543
self.approvals_pending = 0
329
self.approved_delay = string_to_delta(
330
config[u"approved_delay"])
331
self.approved_duration = string_to_delta(
332
config[u"approved_duration"])
333
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)
334
558
559
# Send notice to process children that client state has changed
335
560
def send_changedstate(self):
336
self.changedstate.acquire()
337
self.changedstate.notify_all()
338
self.changedstate.release()
339
561
with self.changedstate:
562
self.changedstate.notify_all()
563
340
564
def enable(self):
341
565
"""Start this client's checker and timeout hooks"""
342
if getattr(self, u"enabled", False):
566
if getattr(self, "enabled", False):
343
567
# Already enabled
344
568
return
345
569
self.send_changedstate()
570
self.expires = datetime.datetime.utcnow() + self.timeout
571
self.enabled = True
346
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):
347
599
# Schedule a new checker to be started an 'interval' from now,
348
600
# and every interval from then on.
349
601
self.checker_initiator_tag = (gobject.timeout_add
353
605
self.disable_initiator_tag = (gobject.timeout_add
354
606
(self.timeout_milliseconds(),
355
607
self.disable))
356
self.enabled = True
357
608
# Also start a new checker *right now*.
358
609
self.start_checker()
359
610
360
def disable(self, quiet=True):
361
"""Disable this client."""
362
if not getattr(self, "enabled", False):
363
return False
364
if not quiet:
365
self.send_changedstate()
366
if not quiet:
367
logger.info(u"Disabling client %s", self.name)
368
if getattr(self, u"disable_initiator_tag", False):
369
gobject.source_remove(self.disable_initiator_tag)
370
self.disable_initiator_tag = None
371
if getattr(self, u"checker_initiator_tag", False):
372
gobject.source_remove(self.checker_initiator_tag)
373
self.checker_initiator_tag = None
374
self.stop_checker()
375
if self.disable_hook:
376
self.disable_hook(self)
377
self.enabled = False
378
# Do not run this again if called by a gobject.timeout_add
379
return False
380
381
def __del__(self):
382
self.disable_hook = None
383
self.disable()
384
385
611
def checker_callback(self, pid, condition, command):
386
612
"""The checker has completed, so take appropriate actions."""
387
613
self.checker_callback_tag = None
388
614
self.checker = None
389
615
if os.WIFEXITED(condition):
390
exitstatus = os.WEXITSTATUS(condition)
391
if exitstatus == 0:
392
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",
393
619
vars(self))
394
620
self.checked_ok()
395
621
else:
396
logger.info(u"Checker for %(name)s failed",
622
logger.info("Checker for %(name)s failed",
397
623
vars(self))
398
624
else:
399
logger.warning(u"Checker for %(name)s crashed?",
625
self.last_checker_status = -1
626
logger.warning("Checker for %(name)s crashed?",
400
627
vars(self))
401
628
402
def checked_ok(self):
629
def checked_ok(self, timeout=None):
403
630
"""Bump up the timeout for this client.
404
631
405
632
This should only be called when the client has been seen,
406
633
alive and well.
407
634
"""
635
if timeout is None:
636
timeout = self.timeout
408
637
self.last_checked_ok = datetime.datetime.utcnow()
409
gobject.source_remove(self.disable_initiator_tag)
410
self.disable_initiator_tag = (gobject.timeout_add
411
(self.timeout_milliseconds(),
412
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()
413
648
414
649
def start_checker(self):
415
650
"""Start a new checker subprocess if one is not running.
428
663
# If a checker exists, make sure it is not a zombie
429
664
try:
430
665
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
431
except (AttributeError, OSError), error:
666
except (AttributeError, OSError) as error:
432
667
if (isinstance(error, OSError)
433
668
and error.errno != errno.ECHILD):
434
669
raise error
435
670
else:
436
671
if pid:
437
logger.warning(u"Checker was a zombie")
672
logger.warning("Checker was a zombie")
438
673
gobject.source_remove(self.checker_callback_tag)
439
674
self.checker_callback(pid, status,
440
675
self.current_checker_command)
445
680
command = self.checker_command % self.host
446
681
except TypeError:
447
682
# Escape attributes for the shell
448
escaped_attrs = dict((key,
449
re.escape(unicode(str(val),
450
errors=
451
u'replace')))
452
for key, val in
453
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
454
691
try:
455
692
command = self.checker_command % escaped_attrs
456
except TypeError, error:
457
logger.error(u'Could not format string "%s":'
458
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)
459
696
return True # Try again later
460
697
self.current_checker_command = command
461
698
try:
462
logger.info(u"Starting checker %r for %s",
699
logger.info("Starting checker %r for %s",
463
700
command, self.name)
464
701
# We don't need to redirect stdout and stderr, since
465
702
# in normal mode, that is already done by daemon(),
467
704
# always replaced by /dev/null.)
468
705
self.checker = subprocess.Popen(command,
469
706
close_fds=True,
470
shell=True, cwd=u"/")
707
shell=True, cwd="/")
471
708
self.checker_callback_tag = (gobject.child_watch_add
472
709
(self.checker.pid,
473
710
self.checker_callback,
478
715
if pid:
479
716
gobject.source_remove(self.checker_callback_tag)
480
717
self.checker_callback(pid, status, command)
481
except OSError, error:
482
logger.error(u"Failed to start subprocess: %s",
718
except OSError as error:
719
logger.error("Failed to start subprocess: %s",
483
720
error)
484
721
# Re-run this periodically if run by gobject.timeout_add
485
722
return True
489
726
if self.checker_callback_tag:
490
727
gobject.source_remove(self.checker_callback_tag)
491
728
self.checker_callback_tag = None
492
if getattr(self, u"checker", None) is None:
729
if getattr(self, "checker", None) is None:
493
730
return
494
logger.debug(u"Stopping checker for %(name)s", vars(self))
731
logger.debug("Stopping checker for %(name)s", vars(self))
495
732
try:
496
733
os.kill(self.checker.pid, signal.SIGTERM)
497
734
#time.sleep(0.5)
498
735
#if self.checker.poll() is None:
499
736
# os.kill(self.checker.pid, signal.SIGKILL)
500
except OSError, error:
737
except OSError as error:
501
738
if error.errno != errno.ESRCH: # No such process
502
739
raise
503
740
self.checker = None
504
741
505
def dbus_service_property(dbus_interface, signature=u"v",
506
access=u"readwrite", byte_arrays=False):
742
743
def dbus_service_property(dbus_interface, signature="v",
744
access="readwrite", byte_arrays=False):
507
745
"""Decorators for marking methods of a DBusObjectWithProperties to
508
746
become properties on the D-Bus.
509
747
516
754
"""
517
755
# Encoding deeply encoded byte arrays is not supported yet by the
518
756
# "Set" method, so we fail early here:
519
if byte_arrays and signature != u"ay":
520
raise ValueError(u"Byte arrays not supported for non-'ay'"
521
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)
522
760
def decorator(func):
523
761
func._dbus_is_property = True
524
762
func._dbus_interface = dbus_interface
525
763
func._dbus_signature = signature
526
764
func._dbus_access = access
527
765
func._dbus_name = func.__name__
528
if func._dbus_name.endswith(u"_dbus_property"):
766
if func._dbus_name.endswith("_dbus_property"):
529
767
func._dbus_name = func._dbus_name[:-14]
530
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
768
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
531
769
return func
532
770
return decorator
533
771
553
791
554
792
class DBusObjectWithProperties(dbus.service.Object):
555
793
"""A D-Bus object with properties.
556
794
557
795
Classes inheriting from this can use the dbus_service_property
558
796
decorator to expose methods as D-Bus properties. It exposes the
559
797
standard Get(), Set(), and GetAll() methods on the D-Bus.
561
799
562
800
@staticmethod
563
801
def _is_dbus_property(obj):
564
return getattr(obj, u"_dbus_is_property", False)
802
return getattr(obj, "_dbus_is_property", False)
565
803
566
804
def _get_all_dbus_properties(self):
567
805
"""Returns a generator of (name, attribute) pairs
568
806
"""
569
return ((prop._dbus_name, prop)
807
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
808
for cls in self.__class__.__mro__
570
809
for name, prop in
571
inspect.getmembers(self, self._is_dbus_property))
810
inspect.getmembers(cls, self._is_dbus_property))
572
811
573
812
def _get_dbus_property(self, interface_name, property_name):
574
813
"""Returns a bound method if one exists which is a D-Bus
575
814
property with the specified name and interface.
576
815
"""
577
for name in (property_name,
578
property_name + u"_dbus_property"):
579
prop = getattr(self, name, None)
580
if (prop is None
581
or not self._is_dbus_property(prop)
582
or prop._dbus_name != property_name
583
or (interface_name and prop._dbus_interface
584
and interface_name != prop._dbus_interface)):
585
continue
586
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
587
823
# No such property
588
raise DBusPropertyNotFound(self.dbus_object_path + u":"
589
+ interface_name + u"."
824
raise DBusPropertyNotFound(self.dbus_object_path + ":"
825
+ interface_name + "."
590
826
+ property_name)
591
827
592
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
593
out_signature=u"v")
828
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
829
out_signature="v")
594
830
def Get(self, interface_name, property_name):
595
831
"""Standard D-Bus property Get() method, see D-Bus standard.
596
832
"""
597
833
prop = self._get_dbus_property(interface_name, property_name)
598
if prop._dbus_access == u"write":
834
if prop._dbus_access == "write":
599
835
raise DBusPropertyAccessException(property_name)
600
836
value = prop()
601
if not hasattr(value, u"variant_level"):
837
if not hasattr(value, "variant_level"):
602
838
return value
603
839
return type(value)(value, variant_level=value.variant_level+1)
604
840
605
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
841
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
606
842
def Set(self, interface_name, property_name, value):
607
843
"""Standard D-Bus property Set() method, see D-Bus standard.
608
844
"""
609
845
prop = self._get_dbus_property(interface_name, property_name)
610
if prop._dbus_access == u"read":
846
if prop._dbus_access == "read":
611
847
raise DBusPropertyAccessException(property_name)
612
if prop._dbus_get_args_options[u"byte_arrays"]:
848
if prop._dbus_get_args_options["byte_arrays"]:
613
849
# The byte_arrays option is not supported yet on
614
850
# signatures other than "ay".
615
if prop._dbus_signature != u"ay":
851
if prop._dbus_signature != "ay":
616
852
raise ValueError
617
value = dbus.ByteArray(''.join(unichr(byte)
618
for byte in value))
853
value = dbus.ByteArray(b''.join(chr(byte)
854
for byte in value))
619
855
prop(value)
620
856
621
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
622
out_signature=u"a{sv}")
857
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
858
out_signature="a{sv}")
623
859
def GetAll(self, interface_name):
624
860
"""Standard D-Bus property GetAll() method, see D-Bus
625
861
standard.
626
862
627
863
Note: Will not include properties with access="write".
628
864
"""
629
all = {}
865
properties = {}
630
866
for name, prop in self._get_all_dbus_properties():
631
867
if (interface_name
632
868
and interface_name != prop._dbus_interface):
633
869
# Interface non-empty but did not match
634
870
continue
635
871
# Ignore write-only properties
636
if prop._dbus_access == u"write":
872
if prop._dbus_access == "write":
637
873
continue
638
874
value = prop()
639
if not hasattr(value, u"variant_level"):
640
all[name] = value
875
if not hasattr(value, "variant_level"):
876
properties[name] = value
641
877
continue
642
all[name] = type(value)(value, variant_level=
643
value.variant_level+1)
644
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")
645
881
646
882
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
647
out_signature=u"s",
883
out_signature="s",
648
884
path_keyword='object_path',
649
885
connection_keyword='connection')
650
886
def Introspect(self, object_path, connection):
655
891
try:
656
892
document = xml.dom.minidom.parseString(xmlstring)
657
893
def make_tag(document, name, prop):
658
e = document.createElement(u"property")
659
e.setAttribute(u"name", name)
660
e.setAttribute(u"type", prop._dbus_signature)
661
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)
662
898
return e
663
for if_tag in document.getElementsByTagName(u"interface"):
899
for if_tag in document.getElementsByTagName("interface"):
664
900
for tag in (make_tag(document, name, prop)
665
901
for name, prop
666
902
in self._get_all_dbus_properties()
667
903
if prop._dbus_interface
668
== if_tag.getAttribute(u"name")):
904
== if_tag.getAttribute("name")):
669
905
if_tag.appendChild(tag)
670
906
# Add the names to the return values for the
671
907
# "org.freedesktop.DBus.Properties" methods
672
if (if_tag.getAttribute(u"name")
673
== u"org.freedesktop.DBus.Properties"):
674
for cn in if_tag.getElementsByTagName(u"method"):
675
if cn.getAttribute(u"name") == u"Get":
676
for arg in cn.getElementsByTagName(u"arg"):
677
if (arg.getAttribute(u"direction")
678
== u"out"):
679
arg.setAttribute(u"name", u"value")
680
elif cn.getAttribute(u"name") == u"GetAll":
681
for arg in cn.getElementsByTagName(u"arg"):
682
if (arg.getAttribute(u"direction")
683
== u"out"):
684
arg.setAttribute(u"name", u"props")
685
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")
686
922
document.unlink()
687
923
except (AttributeError, xml.dom.DOMException,
688
xml.parsers.expat.ExpatError), error:
689
logger.error(u"Failed to override Introspection method",
924
xml.parsers.expat.ExpatError) as error:
925
logger.error("Failed to override Introspection method",
690
926
error)
691
927
return xmlstring
692
928
693
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
694
1036
class ClientDBus(Client, DBusObjectWithProperties):
695
1037
"""A Client class using D-Bus
696
1038
698
1040
dbus_object_path: dbus.ObjectPath
699
1041
bus: dbus.SystemBus()
700
1042
"""
1043
1044
runtime_expansions = (Client.runtime_expansions
1045
+ ("dbus_object_path",))
1046
701
1047
# dbus.service.Object doesn't use super(), so we can't either.
702
1048
703
1049
def __init__(self, bus = None, *args, **kwargs):
704
self._approvals_pending = 0
705
1050
self.bus = bus
706
1051
Client.__init__(self, *args, **kwargs)
1052
self._approvals_pending = 0
1053
1054
self._approvals_pending = 0
707
1055
# Only now, when this client is initialized, can it show up on
708
1056
# the D-Bus
1057
client_object_name = unicode(self.name).translate(
1058
{ord("."): ord("_"),
1059
ord("-"): ord("_")})
709
1060
self.dbus_object_path = (dbus.ObjectPath
710
(u"/clients/"
711
+ self.name.replace(u".", u"_")))
1061
("/clients/" + client_object_name))
712
1062
DBusObjectWithProperties.__init__(self, self.bus,
713
1063
self.dbus_object_path)
714
715
#Could possible return a bool(self._approvals_pending),
716
#but this could mess up approvals_pending += 1 XXX
717
def _get_approvals_pending(self):
718
return self._approvals_pending
719
def _set_approvals_pending(self, value):
720
old_value = self._approvals_pending
721
self._approvals_pending = value
722
bval = bool(value)
723
if (hasattr(self, "dbus_object_path")
724
and bval is not bool(old_value)):
725
dbus_bool = dbus.Boolean(bval, variant_level=1)
726
self.PropertyChanged(dbus.String(u"approved_pending"),
727
dbus_bool)
728
729
approvals_pending = property(_get_approvals_pending,
730
_set_approvals_pending)
731
del _get_approvals_pending, _set_approvals_pending
732
733
@staticmethod
734
def _datetime_to_dbus(dt, variant_level=0):
735
"""Convert a UTC datetime.datetime() to a D-Bus type."""
736
return dbus.String(dt.isoformat(),
737
variant_level=variant_level)
738
739
def enable(self):
740
oldstate = getattr(self, u"enabled", False)
741
r = Client.enable(self)
742
if oldstate != self.enabled:
743
# Emit D-Bus signals
744
self.PropertyChanged(dbus.String(u"enabled"),
745
dbus.Boolean(True, variant_level=1))
746
self.PropertyChanged(
747
dbus.String(u"last_enabled"),
748
self._datetime_to_dbus(self.last_enabled,
749
variant_level=1))
750
return r
751
752
def disable(self, quiet = False):
753
oldstate = getattr(self, u"enabled", False)
754
r = Client.disable(self, quiet=quiet)
755
if not quiet and oldstate != self.enabled:
756
# Emit D-Bus signal
757
self.PropertyChanged(dbus.String(u"enabled"),
758
dbus.Boolean(False, variant_level=1))
759
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
760
1131
761
1132
def __del__(self, *args, **kwargs):
762
1133
try:
763
1134
self.remove_from_connection()
764
1135
except LookupError:
765
1136
pass
766
if hasattr(DBusObjectWithProperties, u"__del__"):
1137
if hasattr(DBusObjectWithProperties, "__del__"):
767
1138
DBusObjectWithProperties.__del__(self, *args, **kwargs)
768
1139
Client.__del__(self, *args, **kwargs)
769
1140
771
1142
*args, **kwargs):
772
1143
self.checker_callback_tag = None
773
1144
self.checker = None
774
# Emit D-Bus signal
775
self.PropertyChanged(dbus.String(u"checker_running"),
776
dbus.Boolean(False, variant_level=1))
777
1145
if os.WIFEXITED(condition):
778
1146
exitstatus = os.WEXITSTATUS(condition)
779
1147
# Emit D-Bus signal
789
1157
return Client.checker_callback(self, pid, condition, command,
790
1158
*args, **kwargs)
791
1159
792
def checked_ok(self, *args, **kwargs):
793
r = Client.checked_ok(self, *args, **kwargs)
794
# Emit D-Bus signal
795
self.PropertyChanged(
796
dbus.String(u"last_checked_ok"),
797
(self._datetime_to_dbus(self.last_checked_ok,
798
variant_level=1)))
799
return r
800
801
1160
def start_checker(self, *args, **kwargs):
802
1161
old_checker = self.checker
803
1162
if self.checker is not None:
810
1169
and old_checker_pid != self.checker.pid):
811
1170
# Emit D-Bus signal
812
1171
self.CheckerStarted(self.current_checker_command)
813
self.PropertyChanged(
814
dbus.String(u"checker_running"),
815
dbus.Boolean(True, variant_level=1))
816
1172
return r
817
1173
818
def stop_checker(self, *args, **kwargs):
819
old_checker = getattr(self, u"checker", None)
820
r = Client.stop_checker(self, *args, **kwargs)
821
if (old_checker is not None
822
and getattr(self, u"checker", None) is None):
823
self.PropertyChanged(dbus.String(u"checker_running"),
824
dbus.Boolean(False, variant_level=1))
825
return r
826
827
1174
def _reset_approved(self):
828
self._approved = None
1175
self.approved = None
829
1176
return False
830
1177
831
1178
def approve(self, value=True):
832
1179
self.send_changedstate()
833
self._approved = value
834
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),
835
1183
self._reset_approved)
836
1184
837
1185
838
1186
## D-Bus methods, signals & properties
839
_interface = u"se.bsnet.fukt.Mandos.Client"
1187
_interface = "se.recompile.Mandos.Client"
840
1188
841
1189
## Signals
842
1190
843
1191
# CheckerCompleted - signal
844
@dbus.service.signal(_interface, signature=u"nxs")
1192
@dbus.service.signal(_interface, signature="nxs")
845
1193
def CheckerCompleted(self, exitcode, waitstatus, command):
846
1194
"D-Bus signal"
847
1195
pass
848
1196
849
1197
# CheckerStarted - signal
850
@dbus.service.signal(_interface, signature=u"s")
1198
@dbus.service.signal(_interface, signature="s")
851
1199
def CheckerStarted(self, command):
852
1200
"D-Bus signal"
853
1201
pass
854
1202
855
1203
# PropertyChanged - signal
856
@dbus.service.signal(_interface, signature=u"sv")
1204
@dbus.service.signal(_interface, signature="sv")
857
1205
def PropertyChanged(self, property, value):
858
1206
"D-Bus signal"
859
1207
pass
860
1208
861
1209
# GotSecret - signal
862
# XXXTEDDY Is sent after succesfull transfer of secret from mandos-server to mandos-client
863
1210
@dbus.service.signal(_interface)
864
1211
def GotSecret(self):
865
"D-Bus signal"
1212
"""D-Bus signal
1213
Is sent after a successful transfer of secret from the Mandos
1214
server to mandos-client
1215
"""
866
1216
pass
867
1217
868
1218
# Rejected - signal
869
@dbus.service.signal(_interface, signature=u"s")
1219
@dbus.service.signal(_interface, signature="s")
870
1220
def Rejected(self, reason):
871
1221
"D-Bus signal"
872
1222
pass
873
1223
874
1224
# NeedApproval - signal
875
@dbus.service.signal(_interface, signature=u"db")
1225
@dbus.service.signal(_interface, signature="tb")
876
1226
def NeedApproval(self, timeout, default):
877
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
"""
878
1236
pass
879
1237
880
1238
## Methods
881
1239
882
1240
# Approve - method
883
@dbus.service.method(_interface, in_signature=u"b")
1241
@dbus.service.method(_interface, in_signature="b")
884
1242
def Approve(self, value):
885
1243
self.approve(value)
886
1244
887
1245
# CheckedOK - method
888
1246
@dbus.service.method(_interface)
889
1247
def CheckedOK(self):
890
return self.checked_ok()
1248
self.checked_ok()
891
1249
892
1250
# Enable - method
893
1251
@dbus.service.method(_interface)
914
1272
915
1273
## Properties
916
1274
917
# approved_pending - property
918
@dbus_service_property(_interface, signature=u"b", access=u"read")
919
def approved_pending_dbus_property(self):
1275
# ApprovalPending - property
1276
@dbus_service_property(_interface, signature="b", access="read")
1277
def ApprovalPending_dbus_property(self):
920
1278
return dbus.Boolean(bool(self.approvals_pending))
921
1279
922
# approved_by_default - property
923
@dbus_service_property(_interface, signature=u"b",
924
access=u"readwrite")
925
def approved_by_default_dbus_property(self):
926
return dbus.Boolean(self.approved_by_default)
927
928
# approved_delay - property
929
@dbus_service_property(_interface, signature=u"t",
930
access=u"readwrite")
931
def approved_delay_dbus_property(self):
932
return dbus.UInt64(self.approved_delay_milliseconds())
933
934
# approved_duration - property
935
@dbus_service_property(_interface, signature=u"t",
936
access=u"readwrite")
937
def approved_duration_dbus_property(self):
938
return dbus.UInt64(self._timedelta_to_milliseconds(
939
self.approved_duration))
940
941
# name - property
942
@dbus_service_property(_interface, signature=u"s", access=u"read")
943
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):
944
1308
return dbus.String(self.name)
945
1309
946
# fingerprint - property
947
@dbus_service_property(_interface, signature=u"s", access=u"read")
948
def fingerprint_dbus_property(self):
1310
# Fingerprint - property
1311
@dbus_service_property(_interface, signature="s", access="read")
1312
def Fingerprint_dbus_property(self):
949
1313
return dbus.String(self.fingerprint)
950
1314
951
# host - property
952
@dbus_service_property(_interface, signature=u"s",
953
access=u"readwrite")
954
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):
955
1319
if value is None: # get
956
1320
return dbus.String(self.host)
957
self.host = value
958
# Emit D-Bus signal
959
self.PropertyChanged(dbus.String(u"host"),
960
dbus.String(value, variant_level=1))
961
962
# created - property
963
@dbus_service_property(_interface, signature=u"s", access=u"read")
964
def created_dbus_property(self):
965
return dbus.String(self._datetime_to_dbus(self.created))
966
967
# last_enabled - property
968
@dbus_service_property(_interface, signature=u"s", access=u"read")
969
def last_enabled_dbus_property(self):
970
if self.last_enabled is None:
971
return dbus.String(u"")
972
return dbus.String(self._datetime_to_dbus(self.last_enabled))
973
974
# enabled - property
975
@dbus_service_property(_interface, signature=u"b",
976
access=u"readwrite")
977
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):
978
1337
if value is None: # get
979
1338
return dbus.Boolean(self.enabled)
980
1339
if value:
982
1341
else:
983
1342
self.disable()
984
1343
985
# last_checked_ok - property
986
@dbus_service_property(_interface, signature=u"s",
987
access=u"readwrite")
988
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):
989
1348
if value is not None:
990
1349
self.checked_ok()
991
1350
return
992
if self.last_checked_ok is None:
993
return dbus.String(u"")
994
return dbus.String(self._datetime_to_dbus(self
995
.last_checked_ok))
996
997
# timeout - property
998
@dbus_service_property(_interface, signature=u"t",
999
access=u"readwrite")
1000
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):
1001
1367
if value is None: # get
1002
1368
return dbus.UInt64(self.timeout_milliseconds())
1003
1369
self.timeout = datetime.timedelta(0, 0, 0, value)
1004
# Emit D-Bus signal
1005
self.PropertyChanged(dbus.String(u"timeout"),
1006
dbus.UInt64(value, variant_level=1))
1007
if getattr(self, u"disable_initiator_tag", None) is None:
1008
return
1009
1370
# Reschedule timeout
1010
gobject.source_remove(self.disable_initiator_tag)
1011
self.disable_initiator_tag = None
1012
time_to_die = (self.
1013
_timedelta_to_milliseconds((self
1014
.last_checked_ok
1015
+ self.timeout)
1016
- datetime.datetime
1017
.utcnow()))
1018
if time_to_die <= 0:
1019
# The timeout has passed
1020
self.disable()
1021
else:
1022
self.disable_initiator_tag = (gobject.timeout_add
1023
(time_to_die, self.disable))
1024
1025
# interval - property
1026
@dbus_service_property(_interface, signature=u"t",
1027
access=u"readwrite")
1028
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):
1029
1402
if value is None: # get
1030
1403
return dbus.UInt64(self.interval_milliseconds())
1031
1404
self.interval = datetime.timedelta(0, 0, 0, value)
1032
# Emit D-Bus signal
1033
self.PropertyChanged(dbus.String(u"interval"),
1034
dbus.UInt64(value, variant_level=1))
1035
if getattr(self, u"checker_initiator_tag", None) is None:
1405
if getattr(self, "checker_initiator_tag", None) is None:
1036
1406
return
1037
# Reschedule checker run
1038
gobject.source_remove(self.checker_initiator_tag)
1039
self.checker_initiator_tag = (gobject.timeout_add
1040
(value, self.start_checker))
1041
self.start_checker() # Start one now, too
1042
1043
# checker - property
1044
@dbus_service_property(_interface, signature=u"s",
1045
access=u"readwrite")
1046
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):
1047
1418
if value is None: # get
1048
1419
return dbus.String(self.checker_command)
1049
self.checker_command = value
1050
# Emit D-Bus signal
1051
self.PropertyChanged(dbus.String(u"checker"),
1052
dbus.String(self.checker_command,
1053
variant_level=1))
1420
self.checker_command = unicode(value)
1054
1421
1055
# checker_running - property
1056
@dbus_service_property(_interface, signature=u"b",
1057
access=u"readwrite")
1058
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):
1059
1426
if value is None: # get
1060
1427
return dbus.Boolean(self.checker is not None)
1061
1428
if value:
1063
1430
else:
1064
1431
self.stop_checker()
1065
1432
1066
# object_path - property
1067
@dbus_service_property(_interface, signature=u"o", access=u"read")
1068
def object_path_dbus_property(self):
1433
# ObjectPath - property
1434
@dbus_service_property(_interface, signature="o", access="read")
1435
def ObjectPath_dbus_property(self):
1069
1436
return self.dbus_object_path # is already a dbus.ObjectPath
1070
1437
1071
# secret = property
1072
@dbus_service_property(_interface, signature=u"ay",
1073
access=u"write", byte_arrays=True)
1074
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):
1075
1442
self.secret = str(value)
1076
1443
1077
1444
del _interface
1083
1450
self._pipe.send(('init', fpr, address))
1084
1451
if not self._pipe.recv():
1085
1452
raise KeyError()
1086
1453
1087
1454
def __getattribute__(self, name):
1088
if(name == '_pipe'):
1455
if name == '_pipe':
1089
1456
return super(ProxyClient, self).__getattribute__(name)
1090
1457
self._pipe.send(('getattr', name))
1091
1458
data = self._pipe.recv()
1096
1463
self._pipe.send(('funcall', name, args, kwargs))
1097
1464
return self._pipe.recv()[1]
1098
1465
return func
1099
1466
1100
1467
def __setattr__(self, name, value):
1101
if(name == '_pipe'):
1468
if name == '_pipe':
1102
1469
return super(ProxyClient, self).__setattr__(name, value)
1103
1470
self._pipe.send(('setattr', name, value))
1104
1471
1105
1472
1473
class ClientDBusTransitional(ClientDBus):
1474
__metaclass__ = AlternateDBusNamesMetaclass
1475
1476
1106
1477
class ClientHandler(socketserver.BaseRequestHandler, object):
1107
1478
"""A class to handle client connections.
1108
1479
1111
1482
1112
1483
def handle(self):
1113
1484
with contextlib.closing(self.server.child_pipe) as child_pipe:
1114
logger.info(u"TCP connection from: %s",
1485
logger.info("TCP connection from: %s",
1115
1486
unicode(self.client_address))
1116
logger.debug(u"Pipe FD: %d",
1487
logger.debug("Pipe FD: %d",
1117
1488
self.server.child_pipe.fileno())
1118
1489
1119
1490
session = (gnutls.connection
1120
1491
.ClientSession(self.request,
1121
1492
gnutls.connection
1122
1493
.X509Credentials()))
1123
1494
1124
1495
# Note: gnutls.connection.X509Credentials is really a
1125
1496
# generic GnuTLS certificate credentials object so long as
1126
1497
# no X.509 keys are added to it. Therefore, we can use it
1127
1498
# here despite using OpenPGP certificates.
1128
1129
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1130
# u"+AES-256-CBC", u"+SHA1",
1131
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1132
# u"+DHE-DSS"))
1499
1500
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1501
# "+AES-256-CBC", "+SHA1",
1502
# "+COMP-NULL", "+CTYPE-OPENPGP",
1503
# "+DHE-DSS"))
1133
1504
# Use a fallback default, since this MUST be set.
1134
1505
priority = self.server.gnutls_priority
1135
1506
if priority is None:
1136
priority = u"NORMAL"
1507
priority = "NORMAL"
1137
1508
(gnutls.library.functions
1138
1509
.gnutls_priority_set_direct(session._c_object,
1139
1510
priority, None))
1140
1511
1141
1512
# Start communication using the Mandos protocol
1142
1513
# Get protocol number
1143
1514
line = self.request.makefile().readline()
1144
logger.debug(u"Protocol version: %r", line)
1515
logger.debug("Protocol version: %r", line)
1145
1516
try:
1146
1517
if int(line.strip().split()[0]) > 1:
1147
1518
raise RuntimeError
1148
except (ValueError, IndexError, RuntimeError), error:
1149
logger.error(u"Unknown protocol version: %s", error)
1519
except (ValueError, IndexError, RuntimeError) as error:
1520
logger.error("Unknown protocol version: %s", error)
1150
1521
return
1151
1522
1152
1523
# Start GnuTLS connection
1153
1524
try:
1154
1525
session.handshake()
1155
except gnutls.errors.GNUTLSError, error:
1156
logger.warning(u"Handshake failed: %s", error)
1526
except gnutls.errors.GNUTLSError as error:
1527
logger.warning("Handshake failed: %s", error)
1157
1528
# Do not run session.bye() here: the session is not
1158
1529
# established. Just abandon the request.
1159
1530
return
1160
logger.debug(u"Handshake succeeded")
1161
1531
logger.debug("Handshake succeeded")
1532
1162
1533
approval_required = False
1163
1534
try:
1164
1535
try:
1165
1536
fpr = self.fingerprint(self.peer_certificate
1166
1537
(session))
1167
except (TypeError, gnutls.errors.GNUTLSError), error:
1168
logger.warning(u"Bad certificate: %s", error)
1538
except (TypeError,
1539
gnutls.errors.GNUTLSError) as error:
1540
logger.warning("Bad certificate: %s", error)
1169
1541
return
1170
logger.debug(u"Fingerprint: %s", fpr)
1171
1542
logger.debug("Fingerprint: %s", fpr)
1543
1172
1544
try:
1173
1545
client = ProxyClient(child_pipe, fpr,
1174
1546
self.client_address)
1175
1547
except KeyError:
1176
1548
return
1177
1549
1178
if client.approved_delay:
1179
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
1180
1556
client.approvals_pending += 1
1181
1557
approval_required = True
1182
1558
1183
1559
while True:
1184
1560
if not client.enabled:
1185
logger.warning(u"Client %s is disabled",
1561
logger.info("Client %s is disabled",
1186
1562
client.name)
1187
1563
if self.server.use_dbus:
1188
1564
# Emit D-Bus signal
1189
client.Rejected("Disabled")
1565
client.Rejected("Disabled")
1190
1566
return
1191
1567
1192
if client._approved or not client.approved_delay:
1568
if client.approved or not client.approval_delay:
1193
1569
#We are approved or approval is disabled
1194
1570
break
1195
elif client._approved is None:
1196
logger.info(u"Client %s need approval",
1571
elif client.approved is None:
1572
logger.info("Client %s needs approval",
1197
1573
client.name)
1198
1574
if self.server.use_dbus:
1199
1575
# Emit D-Bus signal
1200
1576
client.NeedApproval(
1201
client.approved_delay_milliseconds(),
1577
client.approval_delay_milliseconds(),
1202
1578
client.approved_by_default)
1203
1579
else:
1204
logger.warning(u"Client %s was not approved",
1580
logger.warning("Client %s was not approved",
1205
1581
client.name)
1206
1582
if self.server.use_dbus:
1207
1583
# Emit D-Bus signal
1208
client.Rejected("Disapproved")
1584
client.Rejected("Denied")
1209
1585
return
1210
1586
1211
1587
#wait until timeout or approved
1212
#x = float(client._timedelta_to_milliseconds(delay))
1213
1588
time = datetime.datetime.now()
1214
1589
client.changedstate.acquire()
1215
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
1590
(client.changedstate.wait
1591
(float(client.timedelta_to_milliseconds(delay)
1592
/ 1000)))
1216
1593
client.changedstate.release()
1217
1594
time2 = datetime.datetime.now()
1218
1595
if (time2 - time) >= delay:
1222
1599
client.name)
1223
1600
if self.server.use_dbus:
1224
1601
# Emit D-Bus signal
1225
client.Rejected("Time out")
1602
client.Rejected("Approval timed out")
1226
1603
return
1227
1604
else:
1228
1605
break
1231
1608
1232
1609
sent_size = 0
1233
1610
while sent_size < len(client.secret):
1234
# XXX handle session exception
1235
sent = session.send(client.secret[sent_size:])
1236
logger.debug(u"Sent: %d, remaining: %d",
1611
try:
1612
sent = session.send(client.secret[sent_size:])
1613
except gnutls.errors.GNUTLSError as error:
1614
logger.warning("gnutls send failed")
1615
return
1616
logger.debug("Sent: %d, remaining: %d",
1237
1617
sent, len(client.secret)
1238
1618
- (sent_size + sent))
1239
1619
sent_size += sent
1240
1241
logger.info(u"Sending secret to %s", client.name)
1242
# bump the timeout as if seen
1243
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)
1244
1624
if self.server.use_dbus:
1245
1625
# Emit D-Bus signal
1246
1626
client.GotSecret()
1248
1628
finally:
1249
1629
if approval_required:
1250
1630
client.approvals_pending -= 1
1251
session.bye()
1631
try:
1632
session.bye()
1633
except gnutls.errors.GNUTLSError as error:
1634
logger.warning("GnuTLS bye failed")
1252
1635
1253
1636
@staticmethod
1254
1637
def peer_certificate(session):
1264
1647
.gnutls_certificate_get_peers
1265
1648
(session._c_object, ctypes.byref(list_size)))
1266
1649
if not bool(cert_list) and list_size.value != 0:
1267
raise gnutls.errors.GNUTLSError(u"error getting peer"
1268
u" certificate")
1650
raise gnutls.errors.GNUTLSError("error getting peer"
1651
" certificate")
1269
1652
if list_size.value == 0:
1270
1653
return None
1271
1654
cert = cert_list[0]
1297
1680
if crtverify.value != 0:
1298
1681
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1299
1682
raise (gnutls.errors.CertificateSecurityError
1300
(u"Verify failed"))
1683
("Verify failed"))
1301
1684
# New buffer for the fingerprint
1302
1685
buf = ctypes.create_string_buffer(20)
1303
1686
buf_len = ctypes.c_size_t()
1310
1693
# Convert the buffer to a Python bytestring
1311
1694
fpr = ctypes.string_at(buf, buf_len.value)
1312
1695
# Convert the bytestring to hexadecimal notation
1313
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1696
hex_fpr = binascii.hexlify(fpr).upper()
1314
1697
return hex_fpr
1315
1698
1316
1699
1319
1702
def sub_process_main(self, request, address):
1320
1703
try:
1321
1704
self.finish_request(request, address)
1322
except:
1705
except Exception:
1323
1706
self.handle_error(request, address)
1324
1707
self.close_request(request)
1325
1708
1326
1709
def process_request(self, request, address):
1327
1710
"""Start a new process to process the request."""
1328
multiprocessing.Process(target = self.sub_process_main,
1329
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
1330
1717
1331
1718
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1332
1719
""" adds a pipe to the MixIn """
1336
1723
This function creates a new pipe in self.pipe
1337
1724
"""
1338
1725
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1339
1340
super(MultiprocessingMixInWithPipe,
1341
self).process_request(request, client_address)
1726
1727
proc = MultiprocessingMixIn.process_request(self, request,
1728
client_address)
1342
1729
self.child_pipe.close()
1343
self.add_pipe(parent_pipe)
1344
1345
def add_pipe(self, parent_pipe):
1730
self.add_pipe(parent_pipe, proc)
1731
1732
def add_pipe(self, parent_pipe, proc):
1346
1733
"""Dummy function; override as necessary"""
1347
pass
1734
raise NotImplementedError
1735
1348
1736
1349
1737
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1350
1738
socketserver.TCPServer, object):
1368
1756
bind to an address or port if they were not specified."""
1369
1757
if self.interface is not None:
1370
1758
if SO_BINDTODEVICE is None:
1371
logger.error(u"SO_BINDTODEVICE does not exist;"
1372
u" cannot bind to interface %s",
1759
logger.error("SO_BINDTODEVICE does not exist;"
1760
" cannot bind to interface %s",
1373
1761
self.interface)
1374
1762
else:
1375
1763
try:
1376
1764
self.socket.setsockopt(socket.SOL_SOCKET,
1377
1765
SO_BINDTODEVICE,
1378
1766
str(self.interface
1379
+ u'\0'))
1380
except socket.error, error:
1767
+ '\0'))
1768
except socket.error as error:
1381
1769
if error[0] == errno.EPERM:
1382
logger.error(u"No permission to"
1383
u" bind to interface %s",
1770
logger.error("No permission to"
1771
" bind to interface %s",
1384
1772
self.interface)
1385
1773
elif error[0] == errno.ENOPROTOOPT:
1386
logger.error(u"SO_BINDTODEVICE not available;"
1387
u" cannot bind to interface %s",
1774
logger.error("SO_BINDTODEVICE not available;"
1775
" cannot bind to interface %s",
1388
1776
self.interface)
1389
1777
else:
1390
1778
raise
1392
1780
if self.server_address[0] or self.server_address[1]:
1393
1781
if not self.server_address[0]:
1394
1782
if self.address_family == socket.AF_INET6:
1395
any_address = u"::" # in6addr_any
1783
any_address = "::" # in6addr_any
1396
1784
else:
1397
1785
any_address = socket.INADDR_ANY
1398
1786
self.server_address = (any_address,
1425
1813
self.enabled = False
1426
1814
self.clients = clients
1427
1815
if self.clients is None:
1428
self.clients = set()
1816
self.clients = {}
1429
1817
self.use_dbus = use_dbus
1430
1818
self.gnutls_priority = gnutls_priority
1431
1819
IPv6_TCPServer.__init__(self, server_address,
1435
1823
def server_activate(self):
1436
1824
if self.enabled:
1437
1825
return socketserver.TCPServer.server_activate(self)
1826
1438
1827
def enable(self):
1439
1828
self.enabled = True
1440
def add_pipe(self, parent_pipe):
1829
1830
def add_pipe(self, parent_pipe, proc):
1441
1831
# Call "handle_ipc" for both data and EOF events
1442
1832
gobject.io_add_watch(parent_pipe.fileno(),
1443
1833
gobject.IO_IN | gobject.IO_HUP,
1444
1834
functools.partial(self.handle_ipc,
1445
parent_pipe = parent_pipe))
1446
1835
parent_pipe =
1836
parent_pipe,
1837
proc = proc))
1838
1447
1839
def handle_ipc(self, source, condition, parent_pipe=None,
1448
client_object=None):
1840
proc = None, client_object=None):
1449
1841
condition_names = {
1450
gobject.IO_IN: u"IN", # There is data to read.
1451
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
1452
1844
# blocking).
1453
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1454
gobject.IO_ERR: u"ERR", # Error condition.
1455
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
1456
1848
# broken, usually for pipes and
1457
1849
# sockets).
1458
1850
}
1460
1852
for cond, name in
1461
1853
condition_names.iteritems()
1462
1854
if cond & condition)
1463
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1464
conditions_string)
1465
1466
# XXXTEDDY error or the other end of multiprocessing.Pipe has closed
1467
if condition & gobject.IO_HUP or condition & gobject.IO_ERR:
1855
# error, or the other end of multiprocessing.Pipe has closed
1856
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
1857
# Wait for other process to exit
1858
proc.join()
1468
1859
return False
1469
1860
1470
1861
# Read a request from the child
1471
1862
request = parent_pipe.recv()
1472
logger.debug(u"IPC request: %s", repr(request))
1473
1863
command = request[0]
1474
1864
1475
1865
if command == 'init':
1476
1866
fpr = request[1]
1477
1867
address = request[2]
1478
1868
1479
for c in self.clients:
1869
for c in self.clients.itervalues():
1480
1870
if c.fingerprint == fpr:
1481
1871
client = c
1482
1872
break
1483
1873
else:
1484
logger.warning(u"Client not found for fingerprint: %s, ad"
1485
u"dress: %s", fpr, address)
1874
logger.info("Client not found for fingerprint: %s, ad"
1875
"dress: %s", fpr, address)
1486
1876
if self.use_dbus:
1487
1877
# Emit D-Bus signal
1488
mandos_dbus_service.ClientNotFound(fpr, address)
1878
mandos_dbus_service.ClientNotFound(fpr,
1879
address[0])
1489
1880
parent_pipe.send(False)
1490
1881
return False
1491
1882
1492
1883
gobject.io_add_watch(parent_pipe.fileno(),
1493
1884
gobject.IO_IN | gobject.IO_HUP,
1494
1885
functools.partial(self.handle_ipc,
1495
parent_pipe = parent_pipe,
1496
client_object = client))
1886
parent_pipe =
1887
parent_pipe,
1888
proc = proc,
1889
client_object =
1890
client))
1497
1891
parent_pipe.send(True)
1498
# 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
1499
1894
return False
1500
1895
if command == 'funcall':
1501
1896
funcname = request[1]
1502
1897
args = request[2]
1503
1898
kwargs = request[3]
1504
1899
1505
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
1506
1900
parent_pipe.send(('data', getattr(client_object,
1901
funcname)(*args,
1902
**kwargs)))
1903
1507
1904
if command == 'getattr':
1508
1905
attrname = request[1]
1509
1906
if callable(client_object.__getattribute__(attrname)):
1510
1907
parent_pipe.send(('function',))
1511
1908
else:
1512
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
1909
parent_pipe.send(('data', client_object
1910
.__getattribute__(attrname)))
1513
1911
1514
1912
if command == 'setattr':
1515
1913
attrname = request[1]
1516
1914
value = request[2]
1517
1915
setattr(client_object, attrname, value)
1518
1916
1519
1917
return True
1520
1918
1521
1919
1522
1920
def string_to_delta(interval):
1523
1921
"""Parse a string and return a datetime.timedelta
1524
1922
1525
>>> string_to_delta(u'7d')
1923
>>> string_to_delta('7d')
1526
1924
datetime.timedelta(7)
1527
>>> string_to_delta(u'60s')
1925
>>> string_to_delta('60s')
1528
1926
datetime.timedelta(0, 60)
1529
>>> string_to_delta(u'60m')
1927
>>> string_to_delta('60m')
1530
1928
datetime.timedelta(0, 3600)
1531
>>> string_to_delta(u'24h')
1929
>>> string_to_delta('24h')
1532
1930
datetime.timedelta(1)
1533
>>> string_to_delta(u'1w')
1931
>>> string_to_delta('1w')
1534
1932
datetime.timedelta(7)
1535
>>> string_to_delta(u'5m 30s')
1933
>>> string_to_delta('5m 30s')
1536
1934
datetime.timedelta(0, 330)
1537
1935
"""
1538
1936
timevalue = datetime.timedelta(0)
1540
1938
try:
1541
1939
suffix = unicode(s[-1])
1542
1940
value = int(s[:-1])
1543
if suffix == u"d":
1941
if suffix == "d":
1544
1942
delta = datetime.timedelta(value)
1545
elif suffix == u"s":
1943
elif suffix == "s":
1546
1944
delta = datetime.timedelta(0, value)
1547
elif suffix == u"m":
1945
elif suffix == "m":
1548
1946
delta = datetime.timedelta(0, 0, 0, 0, value)
1549
elif suffix == u"h":
1947
elif suffix == "h":
1550
1948
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1551
elif suffix == u"w":
1949
elif suffix == "w":
1552
1950
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1553
1951
else:
1554
raise ValueError(u"Unknown suffix %r" % suffix)
1555
except (ValueError, IndexError), e:
1556
raise ValueError(e.message)
1952
raise ValueError("Unknown suffix %r" % suffix)
1953
except (ValueError, IndexError) as e:
1954
raise ValueError(*(e.args))
1557
1955
timevalue += delta
1558
1956
return timevalue
1559
1957
1560
1958
1561
def if_nametoindex(interface):
1562
"""Call the C function if_nametoindex(), or equivalent
1563
1564
Note: This function cannot accept a unicode string."""
1565
global if_nametoindex
1566
try:
1567
if_nametoindex = (ctypes.cdll.LoadLibrary
1568
(ctypes.util.find_library(u"c"))
1569
.if_nametoindex)
1570
except (OSError, AttributeError):
1571
logger.warning(u"Doing if_nametoindex the hard way")
1572
def if_nametoindex(interface):
1573
"Get an interface index the hard way, i.e. using fcntl()"
1574
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1575
with contextlib.closing(socket.socket()) as s:
1576
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1577
struct.pack(str(u"16s16x"),
1578
interface))
1579
interface_index = struct.unpack(str(u"I"),
1580
ifreq[16:20])[0]
1581
return interface_index
1582
return if_nametoindex(interface)
1583
1584
1585
1959
def daemon(nochdir = False, noclose = False):
1586
1960
"""See daemon(3). Standard BSD Unix function.
1587
1961
1590
1964
sys.exit()
1591
1965
os.setsid()
1592
1966
if not nochdir:
1593
os.chdir(u"/")
1967
os.chdir("/")
1594
1968
if os.fork():
1595
1969
sys.exit()
1596
1970
if not noclose:
1598
1972
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1599
1973
if not stat.S_ISCHR(os.fstat(null).st_mode):
1600
1974
raise OSError(errno.ENODEV,
1601
u"%s not a character device"
1975
"%s not a character device"
1602
1976
% os.path.devnull)
1603
1977
os.dup2(null, sys.stdin.fileno())
1604
1978
os.dup2(null, sys.stdout.fileno())
1612
1986
##################################################################
1613
1987
# Parsing of options, both command line and config file
1614
1988
1615
parser = optparse.OptionParser(version = "%%prog %s" % version)
1616
parser.add_option("-i", u"--interface", type=u"string",
1617
metavar="IF", help=u"Bind to interface IF")
1618
parser.add_option("-a", u"--address", type=u"string",
1619
help=u"Address to listen for requests on")
1620
parser.add_option("-p", u"--port", type=u"int",
1621
help=u"Port number to receive requests on")
1622
parser.add_option("--check", action=u"store_true",
1623
help=u"Run self-test")
1624
parser.add_option("--debug", action=u"store_true",
1625
help=u"Debug mode; run in foreground and log to"
1626
u" terminal")
1627
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1628
u" priority string (see GnuTLS documentation)")
1629
parser.add_option("--servicename", type=u"string",
1630
metavar=u"NAME", help=u"Zeroconf service name")
1631
parser.add_option("--configdir", type=u"string",
1632
default=u"/etc/mandos", metavar=u"DIR",
1633
help=u"Directory to search for configuration"
1634
u" files")
1635
parser.add_option("--no-dbus", action=u"store_false",
1636
dest=u"use_dbus", help=u"Do not provide D-Bus"
1637
u" system bus interface")
1638
parser.add_option("--no-ipv6", action=u"store_false",
1639
dest=u"use_ipv6", help=u"Do not use IPv6")
1640
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()
1641
2026
1642
2027
if options.check:
1643
2028
import doctest
1645
2030
sys.exit()
1646
2031
1647
2032
# Default values for config file for server-global settings
1648
server_defaults = { u"interface": u"",
1649
u"address": u"",
1650
u"port": u"",
1651
u"debug": u"False",
1652
u"priority":
1653
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1654
u"servicename": u"Mandos",
1655
u"use_dbus": u"True",
1656
u"use_ipv6": u"True",
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"
1657
2045
}
1658
2046
1659
2047
# Parse config file for server-global settings
1660
2048
server_config = configparser.SafeConfigParser(server_defaults)
1661
2049
del server_defaults
1662
2050
server_config.read(os.path.join(options.configdir,
1663
u"mandos.conf"))
2051
"mandos.conf"))
1664
2052
# Convert the SafeConfigParser object to a dict
1665
2053
server_settings = server_config.defaults()
1666
2054
# Use the appropriate methods on the non-string config options
1667
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1668
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",
1669
2057
option)
1670
2058
if server_settings["port"]:
1671
server_settings["port"] = server_config.getint(u"DEFAULT",
1672
u"port")
2059
server_settings["port"] = server_config.getint("DEFAULT",
2060
"port")
1673
2061
del server_config
1674
2062
1675
2063
# Override the settings from the config file with command line
1676
2064
# options, if set.
1677
for option in (u"interface", u"address", u"port", u"debug",
1678
u"priority", u"servicename", u"configdir",
1679
u"use_dbus", u"use_ipv6"):
2065
for option in ("interface", "address", "port", "debug",
2066
"priority", "servicename", "configdir",
2067
"use_dbus", "use_ipv6", "debuglevel", "restore",
2068
"statedir"):
1680
2069
value = getattr(options, option)
1681
2070
if value is not None:
1682
2071
server_settings[option] = value
1690
2079
##################################################################
1691
2080
1692
2081
# For convenience
1693
debug = server_settings[u"debug"]
1694
use_dbus = server_settings[u"use_dbus"]
1695
use_ipv6 = server_settings[u"use_ipv6"]
1696
1697
if not debug:
1698
syslogger.setLevel(logging.WARNING)
1699
console.setLevel(logging.WARNING)
1700
1701
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":
1702
2099
syslogger.setFormatter(logging.Formatter
1703
(u'Mandos (%s) [%%(process)d]:'
1704
u' %%(levelname)s: %%(message)s'
1705
% server_settings[u"servicename"]))
2100
('Mandos (%s) [%%(process)d]:'
2101
' %%(levelname)s: %%(message)s'
2102
% server_settings["servicename"]))
1706
2103
1707
2104
# Parse config file with clients
1708
client_defaults = { u"timeout": u"1h",
1709
u"interval": u"5m",
1710
u"checker": u"fping -q -- %%(host)s",
1711
u"host": u"",
1712
u"approved_delay": u"0s",
1713
u"approved_duration": u"1s",
1714
}
1715
client_config = configparser.SafeConfigParser(client_defaults)
1716
client_config.read(os.path.join(server_settings[u"configdir"],
1717
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"))
1718
2109
1719
2110
global mandos_dbus_service
1720
2111
mandos_dbus_service = None
1721
2112
1722
tcp_server = MandosServer((server_settings[u"address"],
1723
server_settings[u"port"]),
2113
tcp_server = MandosServer((server_settings["address"],
2114
server_settings["port"]),
1724
2115
ClientHandler,
1725
interface=server_settings[u"interface"],
2116
interface=(server_settings["interface"]
2117
or None),
1726
2118
use_ipv6=use_ipv6,
1727
2119
gnutls_priority=
1728
server_settings[u"priority"],
2120
server_settings["priority"],
1729
2121
use_dbus=use_dbus)
1730
pidfilename = u"/var/run/mandos.pid"
1731
try:
1732
pidfile = open(pidfilename, u"w")
1733
except IOError:
1734
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)
1735
2128
1736
2129
try:
1737
uid = pwd.getpwnam(u"_mandos").pw_uid
1738
gid = pwd.getpwnam(u"_mandos").pw_gid
2130
uid = pwd.getpwnam("_mandos").pw_uid
2131
gid = pwd.getpwnam("_mandos").pw_gid
1739
2132
except KeyError:
1740
2133
try:
1741
uid = pwd.getpwnam(u"mandos").pw_uid
1742
gid = pwd.getpwnam(u"mandos").pw_gid
2134
uid = pwd.getpwnam("mandos").pw_uid
2135
gid = pwd.getpwnam("mandos").pw_gid
1743
2136
except KeyError:
1744
2137
try:
1745
uid = pwd.getpwnam(u"nobody").pw_uid
1746
gid = pwd.getpwnam(u"nobody").pw_gid
2138
uid = pwd.getpwnam("nobody").pw_uid
2139
gid = pwd.getpwnam("nobody").pw_gid
1747
2140
except KeyError:
1748
2141
uid = 65534
1749
2142
gid = 65534
1750
2143
try:
1751
2144
os.setgid(gid)
1752
2145
os.setuid(uid)
1753
except OSError, error:
2146
except OSError as error:
1754
2147
if error[0] != errno.EPERM:
1755
2148
raise error
1756
2149
1757
# Enable all possible GnuTLS debugging
1758
2150
if debug:
2151
# Enable all possible GnuTLS debugging
2152
1759
2153
# "Use a log level over 10 to enable all debugging options."
1760
2154
# - GnuTLS manual
1761
2155
gnutls.library.functions.gnutls_global_set_log_level(11)
1762
2156
1763
2157
@gnutls.library.types.gnutls_log_func
1764
2158
def debug_gnutls(level, string):
1765
logger.debug(u"GnuTLS: %s", string[:-1])
2159
logger.debug("GnuTLS: %s", string[:-1])
1766
2160
1767
2161
(gnutls.library.functions
1768
2162
.gnutls_global_set_log_function(debug_gnutls))
2163
2164
# Redirect stdin so all checkers get /dev/null
2165
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2166
os.dup2(null, sys.stdin.fileno())
2167
if null > 2:
2168
os.close(null)
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()
1769
2176
1770
2177
global main_loop
1771
2178
# From the Avahi example code
1775
2182
# End of Avahi example code
1776
2183
if use_dbus:
1777
2184
try:
1778
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
2185
bus_name = dbus.service.BusName("se.recompile.Mandos",
1779
2186
bus, do_not_queue=True)
1780
except dbus.exceptions.NameExistsException, e:
1781
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")
1782
2192
use_dbus = False
1783
server_settings[u"use_dbus"] = False
2193
server_settings["use_dbus"] = False
1784
2194
tcp_server.use_dbus = False
1785
2195
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1786
service = AvahiService(name = server_settings[u"servicename"],
1787
servicetype = u"_mandos._tcp",
1788
protocol = protocol, bus = bus)
2196
service = AvahiServiceToSyslog(name =
2197
server_settings["servicename"],
2198
servicetype = "_mandos._tcp",
2199
protocol = protocol, bus = bus)
1789
2200
if server_settings["interface"]:
1790
2201
service.interface = (if_nametoindex
1791
(str(server_settings[u"interface"])))
1792
2202
(str(server_settings["interface"])))
2203
1793
2204
global multiprocessing_manager
1794
2205
multiprocessing_manager = multiprocessing.Manager()
1795
2206
1796
2207
client_class = Client
1797
2208
if use_dbus:
1798
client_class = functools.partial(ClientDBus, bus = bus)
1799
def client_config_items(config, section):
1800
special_settings = {
1801
"approved_by_default":
1802
lambda: config.getboolean(section,
1803
"approved_by_default"),
1804
}
1805
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"]))
1806
2277
try:
1807
yield (name, special_settings[name]())
1808
except KeyError:
1809
yield (name, value)
1810
1811
tcp_server.clients.update(set(
1812
client_class(name = section,
1813
config= dict(client_config_items(
1814
client_config, section)))
1815
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
1816
2303
if not tcp_server.clients:
1817
logger.warning(u"No clients defined")
1818
1819
if debug:
1820
# Redirect stdin so all checkers get /dev/null
1821
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1822
os.dup2(null, sys.stdin.fileno())
1823
if null > 2:
1824
os.close(null)
1825
else:
1826
# No console logging
1827
logger.removeHandler(console)
1828
# Close all input and output, do double fork, etc.
1829
daemon()
1830
1831
try:
1832
with pidfile:
1833
pid = os.getpid()
1834
pidfile.write(str(pid) + "\n")
1835
del pidfile
1836
except IOError:
1837
logger.error(u"Could not write to file %r with PID %d",
1838
pidfilename, pid)
1839
except NameError:
1840
# "pidfile" was never created
1841
pass
1842
del pidfilename
1843
2304
logger.warning("No clients defined")
2305
1844
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
1845
2319
signal.signal(signal.SIGINT, signal.SIG_IGN)
2320
1846
2321
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1847
2322
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1848
2323
1850
2325
class MandosDBusService(dbus.service.Object):
1851
2326
"""A D-Bus proxy object"""
1852
2327
def __init__(self):
1853
dbus.service.Object.__init__(self, bus, u"/")
1854
_interface = u"se.bsnet.fukt.Mandos"
2328
dbus.service.Object.__init__(self, bus, "/")
2329
_interface = "se.recompile.Mandos"
1855
2330
1856
@dbus.service.signal(_interface, signature=u"o")
2331
@dbus.service.signal(_interface, signature="o")
1857
2332
def ClientAdded(self, objpath):
1858
2333
"D-Bus signal"
1859
2334
pass
1860
2335
1861
@dbus.service.signal(_interface, signature=u"ss")
2336
@dbus.service.signal(_interface, signature="ss")
1862
2337
def ClientNotFound(self, fingerprint, address):
1863
2338
"D-Bus signal"
1864
2339
pass
1865
2340
1866
@dbus.service.signal(_interface, signature=u"os")
2341
@dbus.service.signal(_interface, signature="os")
1867
2342
def ClientRemoved(self, objpath, name):
1868
2343
"D-Bus signal"
1869
2344
pass
1870
2345
1871
@dbus.service.method(_interface, out_signature=u"ao")
2346
@dbus.service.method(_interface, out_signature="ao")
1872
2347
def GetAllClients(self):
1873
2348
"D-Bus method"
1874
2349
return dbus.Array(c.dbus_object_path
1875
for c in tcp_server.clients)
2350
for c in
2351
tcp_server.clients.itervalues())
1876
2352
1877
2353
@dbus.service.method(_interface,
1878
out_signature=u"a{oa{sv}}")
2354
out_signature="a{oa{sv}}")
1879
2355
def GetAllClientsWithProperties(self):
1880
2356
"D-Bus method"
1881
2357
return dbus.Dictionary(
1882
((c.dbus_object_path, c.GetAll(u""))
1883
for c in tcp_server.clients),
1884
signature=u"oa{sv}")
2358
((c.dbus_object_path, c.GetAll(""))
2359
for c in tcp_server.clients.itervalues()),
2360
signature="oa{sv}")
1885
2361
1886
@dbus.service.method(_interface, in_signature=u"o")
2362
@dbus.service.method(_interface, in_signature="o")
1887
2363
def RemoveClient(self, object_path):
1888
2364
"D-Bus method"
1889
for c in tcp_server.clients:
2365
for c in tcp_server.clients.itervalues():
1890
2366
if c.dbus_object_path == object_path:
1891
tcp_server.clients.remove(c)
2367
del tcp_server.clients[c.name]
1892
2368
c.remove_from_connection()
1893
2369
# Don't signal anything except ClientRemoved
1894
2370
c.disable(quiet=True)
1899
2375
1900
2376
del _interface
1901
2377
1902
mandos_dbus_service = MandosDBusService()
2378
class MandosDBusServiceTransitional(MandosDBusService):
2379
__metaclass__ = AlternateDBusNamesMetaclass
2380
mandos_dbus_service = MandosDBusServiceTransitional()
1903
2381
1904
2382
def cleanup():
1905
2383
"Cleanup function; run on exit"
1906
2384
service.cleanup()
1907
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
1908
2439
while tcp_server.clients:
1909
client = tcp_server.clients.pop()
2440
name, client = tcp_server.clients.popitem()
1910
2441
if use_dbus:
1911
2442
client.remove_from_connection()
1912
client.disable_hook = None
1913
2443
# Don't signal anything except ClientRemoved
1914
2444
client.disable(quiet=True)
1915
2445
if use_dbus:
1916
2446
# Emit D-Bus signal
1917
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
2447
mandos_dbus_service.ClientRemoved(client
2448
.dbus_object_path,
1918
2449
client.name)
2450
client_settings.clear()
1919
2451
1920
2452
atexit.register(cleanup)
1921
2453
1922
for client in tcp_server.clients:
2454
for client in tcp_server.clients.itervalues():
1923
2455
if use_dbus:
1924
2456
# Emit D-Bus signal
1925
2457
mandos_dbus_service.ClientAdded(client.dbus_object_path)
1926
client.enable()
2458
# Need to initiate checking of clients
2459
if client.enabled:
2460
client.init_checker()
1927
2461
1928
2462
tcp_server.enable()
1929
2463
tcp_server.server_activate()
1931
2465
# Find out what port we got
1932
2466
service.port = tcp_server.socket.getsockname()[1]
1933
2467
if use_ipv6:
1934
logger.info(u"Now listening on address %r, port %d,"
2468
logger.info("Now listening on address %r, port %d,"
1935
2469
" flowinfo %d, scope_id %d"
1936
2470
% tcp_server.socket.getsockname())
1937
2471
else: # IPv4
1938
logger.info(u"Now listening on address %r, port %d"
2472
logger.info("Now listening on address %r, port %d"
1939
2473
% tcp_server.socket.getsockname())
1940
2474
1941
2475
#service.interface = tcp_server.socket.getsockname()[3]
1944
2478
# From the Avahi example code
1945
2479
try:
1946
2480
service.activate()
1947
except dbus.exceptions.DBusException, error:
1948
logger.critical(u"DBusException: %s", error)
2481
except dbus.exceptions.DBusException as error:
2482
logger.critical("DBusException: %s", error)
1949
2483
cleanup()
1950
2484
sys.exit(1)
1951
2485
# End of Avahi example code
1955
2489
(tcp_server.handle_request
1956
2490
(*args[2:], **kwargs) or True))
1957
2491
1958
logger.debug(u"Starting main loop")
2492
logger.debug("Starting main loop")
1959
2493
main_loop.run()
1960
except AvahiError, error:
1961
logger.critical(u"AvahiError: %s", error)
2494
except AvahiError as error:
2495
logger.critical("AvahiError: %s", error)
1962
2496
cleanup()
1963
2497
sys.exit(1)
1964
2498
except KeyboardInterrupt:
1965
2499
if debug:
1966
print >> sys.stderr
1967
logger.debug(u"Server received KeyboardInterrupt")
1968
logger.debug(u"Server exiting")
2500
print("", file=sys.stderr)
2501
logger.debug("Server received KeyboardInterrupt")
2502
logger.debug("Server exiting")
1969
2503
# Must run before the D-Bus bus name gets deregistered
1970
2504
cleanup()
1971
2505
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0