To get this branch, use:
bzr branch
http://bzr.recompile.se/loggerhead/mandos/trunk
« back to all changes in this revision
Viewing changes to mandos
- browse files at revision 24.2.1
- compare with another revision
- download diff
- download tarball
- view history from revision 24.2.1
- Committer: teddy at bsnet
- Date: 2010-08-23 19:23:15 UTC
- mto: (24.1.154 mandos)
- mto: This revision was merged to the branch mainline in revision 421.
- Revision ID: teddy@fukt.bsnet.se-20100823192315-pefgye0l6cavcejs
* debian/control (mandos/Depends): Added "python-urwid".
* mandos (Client.approved_by_default): Changed default to "True".
(Client.approved_delay): Changed default to "0s".
(ClientDBus.GotSecret, ClientDBus.Rejected,
ClientDBus.NeedApproval): Emit "PropertyChanged" signal for the
"approved_pending" property.
* mandos (Client.approved_by_default): Changed default to "True".
(Client.approved_delay): Changed default to "0s".
(ClientDBus.GotSecret, ClientDBus.Rejected,
ClientDBus.NeedApproval): Emit "PropertyChanged" signal for the
"approved_pending" property.
- files removed:
- DBUS-API
- debian/source
- network-hooks.d
- files modified:
- .bzrignore
added
removed
mandos
11
11
# "AvahiService" class, and some lines in "main".
12
12
#
13
13
# Everything else is
14
# Copyright © 2008-2012 Teddy Hogeborn
15
# Copyright © 2008-2012 Björn Påhlsson
14
# Copyright © 2008,2009 Teddy Hogeborn
15
# Copyright © 2008,2009 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@recompile.se>.
31
# Contact the authors at <mandos@fukt.bsnet.se>.
32
32
#
33
33
34
from __future__ import (division, absolute_import, print_function,
35
unicode_literals)
34
from __future__ import division, with_statement, absolute_import
36
35
37
36
import SocketServer as socketserver
38
37
import socket
39
import argparse
38
import optparse
40
39
import datetime
41
40
import errno
42
41
import gnutls.crypto
62
61
import functools
63
62
import cPickle as pickle
64
63
import multiprocessing
65
import types
66
import binascii
67
import tempfile
68
import itertools
69
64
70
65
import dbus
71
66
import dbus.service
76
71
import ctypes.util
77
72
import xml.dom.minidom
78
73
import inspect
79
import GnuPGInterface
80
74
81
75
try:
82
76
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
86
80
except ImportError:
87
81
SO_BINDTODEVICE = None
88
82
89
version = "1.5.3"
90
stored_state_file = "clients.pickle"
91
92
logger = logging.getLogger()
83
84
version = "1.0.14"
85
86
logger = logging.Logger(u'mandos')
93
87
syslogger = (logging.handlers.SysLogHandler
94
88
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
95
address = str("/dev/log")))
96
97
try:
98
if_nametoindex = (ctypes.cdll.LoadLibrary
99
(ctypes.util.find_library("c"))
100
.if_nametoindex)
101
except (OSError, AttributeError):
102
def if_nametoindex(interface):
103
"Get an interface index the hard way, i.e. using fcntl()"
104
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
105
with contextlib.closing(socket.socket()) as s:
106
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
107
struct.pack(str("16s16x"),
108
interface))
109
interface_index = struct.unpack(str("I"),
110
ifreq[16:20])[0]
111
return interface_index
112
113
114
def initlogger(debug, level=logging.WARNING):
115
"""init logger and add loglevel"""
116
117
syslogger.setFormatter(logging.Formatter
118
('Mandos [%(process)d]: %(levelname)s:'
119
' %(message)s'))
120
logger.addHandler(syslogger)
121
122
if debug:
123
console = logging.StreamHandler()
124
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
125
' [%(process)d]:'
126
' %(levelname)s:'
127
' %(message)s'))
128
logger.addHandler(console)
129
logger.setLevel(level)
130
131
132
class PGPError(Exception):
133
"""Exception if encryption/decryption fails"""
134
pass
135
136
137
class PGPEngine(object):
138
"""A simple class for OpenPGP symmetric encryption & decryption"""
139
def __init__(self):
140
self.gnupg = GnuPGInterface.GnuPG()
141
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
142
self.gnupg = GnuPGInterface.GnuPG()
143
self.gnupg.options.meta_interactive = False
144
self.gnupg.options.homedir = self.tempdir
145
self.gnupg.options.extra_args.extend(['--force-mdc',
146
'--quiet',
147
'--no-use-agent'])
148
149
def __enter__(self):
150
return self
151
152
def __exit__ (self, exc_type, exc_value, traceback):
153
self._cleanup()
154
return False
155
156
def __del__(self):
157
self._cleanup()
158
159
def _cleanup(self):
160
if self.tempdir is not None:
161
# Delete contents of tempdir
162
for root, dirs, files in os.walk(self.tempdir,
163
topdown = False):
164
for filename in files:
165
os.remove(os.path.join(root, filename))
166
for dirname in dirs:
167
os.rmdir(os.path.join(root, dirname))
168
# Remove tempdir
169
os.rmdir(self.tempdir)
170
self.tempdir = None
171
172
def password_encode(self, password):
173
# Passphrase can not be empty and can not contain newlines or
174
# NUL bytes. So we prefix it and hex encode it.
175
return b"mandos" + binascii.hexlify(password)
176
177
def encrypt(self, data, password):
178
self.gnupg.passphrase = self.password_encode(password)
179
with open(os.devnull, "w") as devnull:
180
try:
181
proc = self.gnupg.run(['--symmetric'],
182
create_fhs=['stdin', 'stdout'],
183
attach_fhs={'stderr': devnull})
184
with contextlib.closing(proc.handles['stdin']) as f:
185
f.write(data)
186
with contextlib.closing(proc.handles['stdout']) as f:
187
ciphertext = f.read()
188
proc.wait()
189
except IOError as e:
190
raise PGPError(e)
191
self.gnupg.passphrase = None
192
return ciphertext
193
194
def decrypt(self, data, password):
195
self.gnupg.passphrase = self.password_encode(password)
196
with open(os.devnull, "w") as devnull:
197
try:
198
proc = self.gnupg.run(['--decrypt'],
199
create_fhs=['stdin', 'stdout'],
200
attach_fhs={'stderr': devnull})
201
with contextlib.closing(proc.handles['stdin']) as f:
202
f.write(data)
203
with contextlib.closing(proc.handles['stdout']) as f:
204
decrypted_plaintext = f.read()
205
proc.wait()
206
except IOError as e:
207
raise PGPError(e)
208
self.gnupg.passphrase = None
209
return decrypted_plaintext
210
211
89
address = "/dev/log"))
90
syslogger.setFormatter(logging.Formatter
91
(u'Mandos [%(process)d]: %(levelname)s:'
92
u' %(message)s'))
93
logger.addHandler(syslogger)
94
95
console = logging.StreamHandler()
96
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
97
u' %(levelname)s:'
98
u' %(message)s'))
99
logger.addHandler(console)
100
101
multiprocessing_manager = multiprocessing.Manager()
212
102
213
103
class AvahiError(Exception):
214
104
def __init__(self, value, *args, **kwargs):
230
120
Attributes:
231
121
interface: integer; avahi.IF_UNSPEC or an interface index.
232
122
Used to optionally bind to the specified interface.
233
name: string; Example: 'Mandos'
234
type: string; Example: '_mandos._tcp'.
123
name: string; Example: u'Mandos'
124
type: string; Example: u'_mandos._tcp'.
235
125
See <http://www.dns-sd.org/ServiceTypes.html>
236
126
port: integer; what port to announce
237
127
TXT: list of strings; TXT record for the service
246
136
"""
247
137
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
248
138
servicetype = None, port = None, TXT = None,
249
domain = "", host = "", max_renames = 32768,
139
domain = u"", host = u"", max_renames = 32768,
250
140
protocol = avahi.PROTO_UNSPEC, bus = None):
251
141
self.interface = interface
252
142
self.name = name
261
151
self.group = None # our entry group
262
152
self.server = None
263
153
self.bus = bus
264
self.entry_group_state_changed_match = None
265
154
def rename(self):
266
155
"""Derived from the Avahi example code"""
267
156
if self.rename_count >= self.max_renames:
268
logger.critical("No suitable Zeroconf service name found"
269
" after %i retries, exiting.",
157
logger.critical(u"No suitable Zeroconf service name found"
158
u" after %i retries, exiting.",
270
159
self.rename_count)
271
raise AvahiServiceError("Too many renames")
272
self.name = unicode(self.server
273
.GetAlternativeServiceName(self.name))
274
logger.info("Changing Zeroconf service name to %r ...",
275
self.name)
160
raise AvahiServiceError(u"Too many renames")
161
self.name = self.server.GetAlternativeServiceName(self.name)
162
logger.info(u"Changing Zeroconf service name to %r ...",
163
unicode(self.name))
164
syslogger.setFormatter(logging.Formatter
165
(u'Mandos (%s) [%%(process)d]:'
166
u' %%(levelname)s: %%(message)s'
167
% self.name))
276
168
self.remove()
277
try:
278
self.add()
279
except dbus.exceptions.DBusException as error:
280
logger.critical("D-Bus Exception", exc_info=error)
281
self.cleanup()
282
os._exit(1)
169
self.add()
283
170
self.rename_count += 1
284
171
def remove(self):
285
172
"""Derived from the Avahi example code"""
286
if self.entry_group_state_changed_match is not None:
287
self.entry_group_state_changed_match.remove()
288
self.entry_group_state_changed_match = None
289
173
if self.group is not None:
290
174
self.group.Reset()
291
175
def add(self):
292
176
"""Derived from the Avahi example code"""
293
self.remove()
294
177
if self.group is None:
295
178
self.group = dbus.Interface(
296
179
self.bus.get_object(avahi.DBUS_NAME,
297
180
self.server.EntryGroupNew()),
298
181
avahi.DBUS_INTERFACE_ENTRY_GROUP)
299
self.entry_group_state_changed_match = (
300
self.group.connect_to_signal(
301
'StateChanged', self.entry_group_state_changed))
302
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
182
self.group.connect_to_signal('StateChanged',
183
self
184
.entry_group_state_changed)
185
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
303
186
self.name, self.type)
304
187
self.group.AddService(
305
188
self.interface,
312
195
self.group.Commit()
313
196
def entry_group_state_changed(self, state, error):
314
197
"""Derived from the Avahi example code"""
315
logger.debug("Avahi entry group state change: %i", state)
198
logger.debug(u"Avahi state change: %i", state)
316
199
317
200
if state == avahi.ENTRY_GROUP_ESTABLISHED:
318
logger.debug("Zeroconf service established.")
201
logger.debug(u"Zeroconf service established.")
319
202
elif state == avahi.ENTRY_GROUP_COLLISION:
320
logger.info("Zeroconf service name collision.")
203
logger.warning(u"Zeroconf service name collision.")
321
204
self.rename()
322
205
elif state == avahi.ENTRY_GROUP_FAILURE:
323
logger.critical("Avahi: Error in group state changed %s",
206
logger.critical(u"Avahi: Error in group state changed %s",
324
207
unicode(error))
325
raise AvahiGroupError("State changed: %s"
208
raise AvahiGroupError(u"State changed: %s"
326
209
% unicode(error))
327
210
def cleanup(self):
328
211
"""Derived from the Avahi example code"""
329
212
if self.group is not None:
330
try:
331
self.group.Free()
332
except (dbus.exceptions.UnknownMethodException,
333
dbus.exceptions.DBusException):
334
pass
213
self.group.Free()
335
214
self.group = None
336
self.remove()
337
def server_state_changed(self, state, error=None):
215
def server_state_changed(self, state):
338
216
"""Derived from the Avahi example code"""
339
logger.debug("Avahi server state change: %i", state)
340
bad_states = { avahi.SERVER_INVALID:
341
"Zeroconf server invalid",
342
avahi.SERVER_REGISTERING: None,
343
avahi.SERVER_COLLISION:
344
"Zeroconf server name collision",
345
avahi.SERVER_FAILURE:
346
"Zeroconf server failure" }
347
if state in bad_states:
348
if bad_states[state] is not None:
349
if error is None:
350
logger.error(bad_states[state])
351
else:
352
logger.error(bad_states[state] + ": %r", error)
353
self.cleanup()
217
if state == avahi.SERVER_COLLISION:
218
logger.error(u"Zeroconf server name collision")
219
self.remove()
354
220
elif state == avahi.SERVER_RUNNING:
355
221
self.add()
356
else:
357
if error is None:
358
logger.debug("Unknown state: %r", state)
359
else:
360
logger.debug("Unknown state: %r: %r", state, error)
361
222
def activate(self):
362
223
"""Derived from the Avahi example code"""
363
224
if self.server is None:
364
225
self.server = dbus.Interface(
365
226
self.bus.get_object(avahi.DBUS_NAME,
366
avahi.DBUS_PATH_SERVER,
367
follow_name_owner_changes=True),
227
avahi.DBUS_PATH_SERVER),
368
228
avahi.DBUS_INTERFACE_SERVER)
369
self.server.connect_to_signal("StateChanged",
229
self.server.connect_to_signal(u"StateChanged",
370
230
self.server_state_changed)
371
231
self.server_state_changed(self.server.GetState())
372
232
373
class AvahiServiceToSyslog(AvahiService):
374
def rename(self):
375
"""Add the new name to the syslog messages"""
376
ret = AvahiService.rename(self)
377
syslogger.setFormatter(logging.Formatter
378
('Mandos (%s) [%%(process)d]:'
379
' %%(levelname)s: %%(message)s'
380
% self.name))
381
return ret
382
233
383
def timedelta_to_milliseconds(td):
384
"Convert a datetime.timedelta() to milliseconds"
385
return ((td.days * 24 * 60 * 60 * 1000)
386
+ (td.seconds * 1000)
387
+ (td.microseconds // 1000))
388
389
234
class Client(object):
390
235
"""A representation of a client host served by this server.
391
236
392
237
Attributes:
393
approved: bool(); 'None' if not yet approved/disapproved
394
approval_delay: datetime.timedelta(); Time to wait for approval
395
approval_duration: datetime.timedelta(); Duration of one approval
238
name: string; from the config file, used in log messages and
239
D-Bus identifiers
240
fingerprint: string (40 or 32 hexadecimal digits); used to
241
uniquely identify the client
242
secret: bytestring; sent verbatim (over TLS) to client
243
host: string; available for use by the checker command
244
created: datetime.datetime(); (UTC) object creation
245
last_enabled: datetime.datetime(); (UTC)
246
enabled: bool()
247
last_checked_ok: datetime.datetime(); (UTC) or None
248
timeout: datetime.timedelta(); How long from last_checked_ok
249
until this client is disabled
250
interval: datetime.timedelta(); How often to start a new checker
251
disable_hook: If set, called by disable() as disable_hook(self)
396
252
checker: subprocess.Popen(); a running checker process used
397
253
to see if the client lives.
398
254
'None' if no process is running.
399
checker_callback_tag: a gobject event source tag, or None
400
checker_command: string; External command which is run to check
401
if client lives. %() expansions are done at
255
checker_initiator_tag: a gobject event source tag, or None
256
disable_initiator_tag: - '' -
257
checker_callback_tag: - '' -
258
checker_command: string; External command which is run to check if
259
client lives. %() expansions are done at
402
260
runtime with vars(self) as dict, so that for
403
261
instance %(name)s can be used in the command.
404
checker_initiator_tag: a gobject event source tag, or None
405
created: datetime.datetime(); (UTC) object creation
406
client_structure: Object describing what attributes a client has
407
and is used for storing the client at exit
408
262
current_checker_command: string; current running checker_command
409
disable_initiator_tag: a gobject event source tag, or None
410
enabled: bool()
411
fingerprint: string (40 or 32 hexadecimal digits); used to
412
uniquely identify the client
413
host: string; available for use by the checker command
414
interval: datetime.timedelta(); How often to start a new checker
415
last_approval_request: datetime.datetime(); (UTC) or None
416
last_checked_ok: datetime.datetime(); (UTC) or None
417
last_checker_status: integer between 0 and 255 reflecting exit
418
status of last checker. -1 reflects crashed
419
checker, -2 means no checker completed yet.
420
last_enabled: datetime.datetime(); (UTC) or None
421
name: string; from the config file, used in log messages and
422
D-Bus identifiers
423
secret: bytestring; sent verbatim (over TLS) to client
424
timeout: datetime.timedelta(); How long from last_checked_ok
425
until this client is disabled
426
extended_timeout: extra long timeout when secret has been sent
427
runtime_expansions: Allowed attributes for runtime expansion.
428
expires: datetime.datetime(); time (UTC) when a client will be
429
disabled, or None
263
approved_delay: datetime.timedelta(); Time to wait for approval
264
_approved: bool(); 'None' if not yet approved/disapproved
265
approved_duration: datetime.timedelta(); Duration of one approval
430
266
"""
431
267
432
runtime_expansions = ("approval_delay", "approval_duration",
433
"created", "enabled", "fingerprint",
434
"host", "interval", "last_checked_ok",
435
"last_enabled", "name", "timeout")
436
client_defaults = { "timeout": "5m",
437
"extended_timeout": "15m",
438
"interval": "2m",
439
"checker": "fping -q -- %%(host)s",
440
"host": "",
441
"approval_delay": "0s",
442
"approval_duration": "1s",
443
"approved_by_default": "True",
444
"enabled": "True",
445
}
268
@staticmethod
269
def _timedelta_to_milliseconds(td):
270
"Convert a datetime.timedelta() to milliseconds"
271
return ((td.days * 24 * 60 * 60 * 1000)
272
+ (td.seconds * 1000)
273
+ (td.microseconds // 1000))
446
274
447
275
def timeout_milliseconds(self):
448
276
"Return the 'timeout' attribute in milliseconds"
449
return timedelta_to_milliseconds(self.timeout)
450
451
def extended_timeout_milliseconds(self):
452
"Return the 'extended_timeout' attribute in milliseconds"
453
return timedelta_to_milliseconds(self.extended_timeout)
277
return self._timedelta_to_milliseconds(self.timeout)
454
278
455
279
def interval_milliseconds(self):
456
280
"Return the 'interval' attribute in milliseconds"
457
return timedelta_to_milliseconds(self.interval)
281
return self._timedelta_to_milliseconds(self.interval)
282
283
def approved_delay_milliseconds(self):
284
return self._timedelta_to_milliseconds(self.approved_delay)
458
285
459
def approval_delay_milliseconds(self):
460
return timedelta_to_milliseconds(self.approval_delay)
461
462
@staticmethod
463
def config_parser(config):
464
"""Construct a new dict of client settings of this form:
465
{ client_name: {setting_name: value, ...}, ...}
466
with exceptions for any special settings as defined above.
467
NOTE: Must be a pure function. Must return the same result
468
value given the same arguments.
469
"""
470
settings = {}
471
for client_name in config.sections():
472
section = dict(config.items(client_name))
473
client = settings[client_name] = {}
474
475
client["host"] = section["host"]
476
# Reformat values from string types to Python types
477
client["approved_by_default"] = config.getboolean(
478
client_name, "approved_by_default")
479
client["enabled"] = config.getboolean(client_name,
480
"enabled")
481
482
client["fingerprint"] = (section["fingerprint"].upper()
483
.replace(" ", ""))
484
if "secret" in section:
485
client["secret"] = section["secret"].decode("base64")
486
elif "secfile" in section:
487
with open(os.path.expanduser(os.path.expandvars
488
(section["secfile"])),
489
"rb") as secfile:
490
client["secret"] = secfile.read()
491
else:
492
raise TypeError("No secret or secfile for section %s"
493
% section)
494
client["timeout"] = string_to_delta(section["timeout"])
495
client["extended_timeout"] = string_to_delta(
496
section["extended_timeout"])
497
client["interval"] = string_to_delta(section["interval"])
498
client["approval_delay"] = string_to_delta(
499
section["approval_delay"])
500
client["approval_duration"] = string_to_delta(
501
section["approval_duration"])
502
client["checker_command"] = section["checker"]
503
client["last_approval_request"] = None
504
client["last_checked_ok"] = None
505
client["last_checker_status"] = -2
506
507
return settings
508
509
510
def __init__(self, settings, name = None):
286
def __init__(self, name = None, disable_hook=None, config=None):
511
287
"""Note: the 'checker' key in 'config' sets the
512
288
'checker_command' attribute and *not* the 'checker'
513
289
attribute."""
514
290
self.name = name
515
# adding all client settings
516
for setting, value in settings.iteritems():
517
setattr(self, setting, value)
518
519
if self.enabled:
520
if not hasattr(self, "last_enabled"):
521
self.last_enabled = datetime.datetime.utcnow()
522
if not hasattr(self, "expires"):
523
self.expires = (datetime.datetime.utcnow()
524
+ self.timeout)
525
else:
526
self.last_enabled = None
527
self.expires = None
528
529
logger.debug("Creating client %r", self.name)
291
if config is None:
292
config = {}
293
logger.debug(u"Creating client %r", self.name)
530
294
# Uppercase and remove spaces from fingerprint for later
531
295
# comparison purposes with return value from the fingerprint()
532
296
# function
533
logger.debug(" Fingerprint: %s", self.fingerprint)
534
self.created = settings.get("created",
535
datetime.datetime.utcnow())
536
537
# attributes specific for this server instance
297
self.fingerprint = (config[u"fingerprint"].upper()
298
.replace(u" ", u""))
299
logger.debug(u" Fingerprint: %s", self.fingerprint)
300
if u"secret" in config:
301
self.secret = config[u"secret"].decode(u"base64")
302
elif u"secfile" in config:
303
with open(os.path.expanduser(os.path.expandvars
304
(config[u"secfile"])),
305
"rb") as secfile:
306
self.secret = secfile.read()
307
else:
308
#XXX Need to allow secret on demand!
309
raise TypeError(u"No secret or secfile for client %s"
310
% self.name)
311
self.host = config.get(u"host", u"")
312
self.created = datetime.datetime.utcnow()
313
self.enabled = False
314
self.last_enabled = None
315
self.last_checked_ok = None
316
self.timeout = string_to_delta(config[u"timeout"])
317
self.interval = string_to_delta(config[u"interval"])
318
self.disable_hook = disable_hook
538
319
self.checker = None
539
320
self.checker_initiator_tag = None
540
321
self.disable_initiator_tag = None
541
322
self.checker_callback_tag = None
323
self.checker_command = config[u"checker"]
542
324
self.current_checker_command = None
543
self.approved = None
325
self.last_connect = None
544
326
self.approvals_pending = 0
545
self.changedstate = (multiprocessing_manager
546
.Condition(multiprocessing_manager
547
.Lock()))
548
self.client_structure = [attr for attr in
549
self.__dict__.iterkeys()
550
if not attr.startswith("_")]
551
self.client_structure.append("client_structure")
552
553
for name, t in inspect.getmembers(type(self),
554
lambda obj:
555
isinstance(obj,
556
property)):
557
if not name.startswith("_"):
558
self.client_structure.append(name)
559
560
# Send notice to process children that client state has changed
327
self._approved = None
328
self.approved_by_default = config.get(u"approved_by_default",
329
True)
330
self.approved_delay = string_to_delta(
331
config[u"approved_delay"])
332
self.approved_duration = string_to_delta(
333
config[u"approved_duration"])
334
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
335
561
336
def send_changedstate(self):
562
with self.changedstate:
563
self.changedstate.notify_all()
564
337
self.changedstate.acquire()
338
self.changedstate.notify_all()
339
self.changedstate.release()
340
565
341
def enable(self):
566
342
"""Start this client's checker and timeout hooks"""
567
if getattr(self, "enabled", False):
343
if getattr(self, u"enabled", False):
568
344
# Already enabled
569
345
return
570
346
self.send_changedstate()
571
self.expires = datetime.datetime.utcnow() + self.timeout
572
self.enabled = True
573
347
self.last_enabled = datetime.datetime.utcnow()
574
self.init_checker()
575
576
def disable(self, quiet=True):
577
"""Disable this client."""
578
if not getattr(self, "enabled", False):
579
return False
580
if not quiet:
581
self.send_changedstate()
582
if not quiet:
583
logger.info("Disabling client %s", self.name)
584
if getattr(self, "disable_initiator_tag", False):
585
gobject.source_remove(self.disable_initiator_tag)
586
self.disable_initiator_tag = None
587
self.expires = None
588
if getattr(self, "checker_initiator_tag", False):
589
gobject.source_remove(self.checker_initiator_tag)
590
self.checker_initiator_tag = None
591
self.stop_checker()
592
self.enabled = False
593
# Do not run this again if called by a gobject.timeout_add
594
return False
595
596
def __del__(self):
597
self.disable()
598
599
def init_checker(self):
600
348
# Schedule a new checker to be started an 'interval' from now,
601
349
# and every interval from then on.
602
350
self.checker_initiator_tag = (gobject.timeout_add
606
354
self.disable_initiator_tag = (gobject.timeout_add
607
355
(self.timeout_milliseconds(),
608
356
self.disable))
357
self.enabled = True
609
358
# Also start a new checker *right now*.
610
359
self.start_checker()
611
360
361
def disable(self, quiet=True):
362
"""Disable this client."""
363
if not getattr(self, "enabled", False):
364
return False
365
if not quiet:
366
self.send_changedstate()
367
if not quiet:
368
logger.info(u"Disabling client %s", self.name)
369
if getattr(self, u"disable_initiator_tag", False):
370
gobject.source_remove(self.disable_initiator_tag)
371
self.disable_initiator_tag = None
372
if getattr(self, u"checker_initiator_tag", False):
373
gobject.source_remove(self.checker_initiator_tag)
374
self.checker_initiator_tag = None
375
self.stop_checker()
376
if self.disable_hook:
377
self.disable_hook(self)
378
self.enabled = False
379
# Do not run this again if called by a gobject.timeout_add
380
return False
381
382
def __del__(self):
383
self.disable_hook = None
384
self.disable()
385
612
386
def checker_callback(self, pid, condition, command):
613
387
"""The checker has completed, so take appropriate actions."""
614
388
self.checker_callback_tag = None
615
389
self.checker = None
616
390
if os.WIFEXITED(condition):
617
self.last_checker_status = os.WEXITSTATUS(condition)
618
if self.last_checker_status == 0:
619
logger.info("Checker for %(name)s succeeded",
391
exitstatus = os.WEXITSTATUS(condition)
392
if exitstatus == 0:
393
logger.info(u"Checker for %(name)s succeeded",
620
394
vars(self))
621
395
self.checked_ok()
622
396
else:
623
logger.info("Checker for %(name)s failed",
397
logger.info(u"Checker for %(name)s failed",
624
398
vars(self))
625
399
else:
626
self.last_checker_status = -1
627
logger.warning("Checker for %(name)s crashed?",
400
logger.warning(u"Checker for %(name)s crashed?",
628
401
vars(self))
629
402
630
403
def checked_ok(self):
631
"""Assert that the client has been seen, alive and well."""
404
"""Bump up the timeout for this client.
405
406
This should only be called when the client has been seen,
407
alive and well.
408
"""
632
409
self.last_checked_ok = datetime.datetime.utcnow()
633
self.last_checker_status = 0
634
self.bump_timeout()
635
636
def bump_timeout(self, timeout=None):
637
"""Bump up the timeout for this client."""
638
if timeout is None:
639
timeout = self.timeout
640
if self.disable_initiator_tag is not None:
641
gobject.source_remove(self.disable_initiator_tag)
642
if getattr(self, "enabled", False):
643
self.disable_initiator_tag = (gobject.timeout_add
644
(timedelta_to_milliseconds
645
(timeout), self.disable))
646
self.expires = datetime.datetime.utcnow() + timeout
647
648
def need_approval(self):
649
self.last_approval_request = datetime.datetime.utcnow()
410
gobject.source_remove(self.disable_initiator_tag)
411
self.disable_initiator_tag = (gobject.timeout_add
412
(self.timeout_milliseconds(),
413
self.disable))
650
414
651
415
def start_checker(self):
652
416
"""Start a new checker subprocess if one is not running.
665
429
# If a checker exists, make sure it is not a zombie
666
430
try:
667
431
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
668
except (AttributeError, OSError) as error:
432
except (AttributeError, OSError), error:
669
433
if (isinstance(error, OSError)
670
434
and error.errno != errno.ECHILD):
671
435
raise error
672
436
else:
673
437
if pid:
674
logger.warning("Checker was a zombie")
438
logger.warning(u"Checker was a zombie")
675
439
gobject.source_remove(self.checker_callback_tag)
676
440
self.checker_callback(pid, status,
677
441
self.current_checker_command)
682
446
command = self.checker_command % self.host
683
447
except TypeError:
684
448
# Escape attributes for the shell
685
escaped_attrs = dict(
686
(attr,
687
re.escape(unicode(str(getattr(self, attr, "")),
688
errors=
689
'replace')))
690
for attr in
691
self.runtime_expansions)
692
449
escaped_attrs = dict((key,
450
re.escape(unicode(str(val),
451
errors=
452
u'replace')))
453
for key, val in
454
vars(self).iteritems())
693
455
try:
694
456
command = self.checker_command % escaped_attrs
695
except TypeError as error:
696
logger.error('Could not format string "%s"',
697
self.checker_command, exc_info=error)
457
except TypeError, error:
458
logger.error(u'Could not format string "%s":'
459
u' %s', self.checker_command, error)
698
460
return True # Try again later
699
461
self.current_checker_command = command
700
462
try:
701
logger.info("Starting checker %r for %s",
463
logger.info(u"Starting checker %r for %s",
702
464
command, self.name)
703
465
# We don't need to redirect stdout and stderr, since
704
466
# in normal mode, that is already done by daemon(),
706
468
# always replaced by /dev/null.)
707
469
self.checker = subprocess.Popen(command,
708
470
close_fds=True,
709
shell=True, cwd="/")
471
shell=True, cwd=u"/")
710
472
self.checker_callback_tag = (gobject.child_watch_add
711
473
(self.checker.pid,
712
474
self.checker_callback,
717
479
if pid:
718
480
gobject.source_remove(self.checker_callback_tag)
719
481
self.checker_callback(pid, status, command)
720
except OSError as error:
721
logger.error("Failed to start subprocess",
722
exc_info=error)
482
except OSError, error:
483
logger.error(u"Failed to start subprocess: %s",
484
error)
723
485
# Re-run this periodically if run by gobject.timeout_add
724
486
return True
725
487
728
490
if self.checker_callback_tag:
729
491
gobject.source_remove(self.checker_callback_tag)
730
492
self.checker_callback_tag = None
731
if getattr(self, "checker", None) is None:
493
if getattr(self, u"checker", None) is None:
732
494
return
733
logger.debug("Stopping checker for %(name)s", vars(self))
495
logger.debug(u"Stopping checker for %(name)s", vars(self))
734
496
try:
735
self.checker.terminate()
497
os.kill(self.checker.pid, signal.SIGTERM)
736
498
#time.sleep(0.5)
737
499
#if self.checker.poll() is None:
738
# self.checker.kill()
739
except OSError as error:
500
# os.kill(self.checker.pid, signal.SIGKILL)
501
except OSError, error:
740
502
if error.errno != errno.ESRCH: # No such process
741
503
raise
742
504
self.checker = None
743
505
744
745
def dbus_service_property(dbus_interface, signature="v",
746
access="readwrite", byte_arrays=False):
506
def dbus_service_property(dbus_interface, signature=u"v",
507
access=u"readwrite", byte_arrays=False):
747
508
"""Decorators for marking methods of a DBusObjectWithProperties to
748
509
become properties on the D-Bus.
749
510
756
517
"""
757
518
# Encoding deeply encoded byte arrays is not supported yet by the
758
519
# "Set" method, so we fail early here:
759
if byte_arrays and signature != "ay":
760
raise ValueError("Byte arrays not supported for non-'ay'"
761
" signature %r" % signature)
520
if byte_arrays and signature != u"ay":
521
raise ValueError(u"Byte arrays not supported for non-'ay'"
522
u" signature %r" % signature)
762
523
def decorator(func):
763
524
func._dbus_is_property = True
764
525
func._dbus_interface = dbus_interface
765
526
func._dbus_signature = signature
766
527
func._dbus_access = access
767
528
func._dbus_name = func.__name__
768
if func._dbus_name.endswith("_dbus_property"):
529
if func._dbus_name.endswith(u"_dbus_property"):
769
530
func._dbus_name = func._dbus_name[:-14]
770
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
771
return func
772
return decorator
773
774
775
def dbus_interface_annotations(dbus_interface):
776
"""Decorator for marking functions returning interface annotations.
777
778
Usage:
779
780
@dbus_interface_annotations("org.example.Interface")
781
def _foo(self): # Function name does not matter
782
return {"org.freedesktop.DBus.Deprecated": "true",
783
"org.freedesktop.DBus.Property.EmitsChangedSignal":
784
"false"}
785
"""
786
def decorator(func):
787
func._dbus_is_interface = True
788
func._dbus_interface = dbus_interface
789
func._dbus_name = dbus_interface
790
return func
791
return decorator
792
793
794
def dbus_annotations(annotations):
795
"""Decorator to annotate D-Bus methods, signals or properties
796
Usage:
797
798
@dbus_service_property("org.example.Interface", signature="b",
799
access="r")
800
@dbus_annotations({{"org.freedesktop.DBus.Deprecated": "true",
801
"org.freedesktop.DBus.Property."
802
"EmitsChangedSignal": "false"})
803
def Property_dbus_property(self):
804
return dbus.Boolean(False)
805
"""
806
def decorator(func):
807
func._dbus_annotations = annotations
531
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
808
532
return func
809
533
return decorator
810
534
830
554
831
555
class DBusObjectWithProperties(dbus.service.Object):
832
556
"""A D-Bus object with properties.
833
557
834
558
Classes inheriting from this can use the dbus_service_property
835
559
decorator to expose methods as D-Bus properties. It exposes the
836
560
standard Get(), Set(), and GetAll() methods on the D-Bus.
837
561
"""
838
562
839
563
@staticmethod
840
def _is_dbus_thing(thing):
841
"""Returns a function testing if an attribute is a D-Bus thing
842
843
If called like _is_dbus_thing("method") it returns a function
844
suitable for use as predicate to inspect.getmembers().
845
"""
846
return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),
847
False)
564
def _is_dbus_property(obj):
565
return getattr(obj, u"_dbus_is_property", False)
848
566
849
def _get_all_dbus_things(self, thing):
567
def _get_all_dbus_properties(self):
850
568
"""Returns a generator of (name, attribute) pairs
851
569
"""
852
return ((getattr(athing.__get__(self), "_dbus_name",
853
name),
854
athing.__get__(self))
855
for cls in self.__class__.__mro__
856
for name, athing in
857
inspect.getmembers(cls,
858
self._is_dbus_thing(thing)))
570
return ((prop._dbus_name, prop)
571
for name, prop in
572
inspect.getmembers(self, self._is_dbus_property))
859
573
860
574
def _get_dbus_property(self, interface_name, property_name):
861
575
"""Returns a bound method if one exists which is a D-Bus
862
576
property with the specified name and interface.
863
577
"""
864
for cls in self.__class__.__mro__:
865
for name, value in (inspect.getmembers
866
(cls,
867
self._is_dbus_thing("property"))):
868
if (value._dbus_name == property_name
869
and value._dbus_interface == interface_name):
870
return value.__get__(self)
871
578
for name in (property_name,
579
property_name + u"_dbus_property"):
580
prop = getattr(self, name, None)
581
if (prop is None
582
or not self._is_dbus_property(prop)
583
or prop._dbus_name != property_name
584
or (interface_name and prop._dbus_interface
585
and interface_name != prop._dbus_interface)):
586
continue
587
return prop
872
588
# No such property
873
raise DBusPropertyNotFound(self.dbus_object_path + ":"
874
+ interface_name + "."
589
raise DBusPropertyNotFound(self.dbus_object_path + u":"
590
+ interface_name + u"."
875
591
+ property_name)
876
592
877
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
878
out_signature="v")
593
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
594
out_signature=u"v")
879
595
def Get(self, interface_name, property_name):
880
596
"""Standard D-Bus property Get() method, see D-Bus standard.
881
597
"""
882
598
prop = self._get_dbus_property(interface_name, property_name)
883
if prop._dbus_access == "write":
599
if prop._dbus_access == u"write":
884
600
raise DBusPropertyAccessException(property_name)
885
601
value = prop()
886
if not hasattr(value, "variant_level"):
602
if not hasattr(value, u"variant_level"):
887
603
return value
888
604
return type(value)(value, variant_level=value.variant_level+1)
889
605
890
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
606
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
891
607
def Set(self, interface_name, property_name, value):
892
608
"""Standard D-Bus property Set() method, see D-Bus standard.
893
609
"""
894
610
prop = self._get_dbus_property(interface_name, property_name)
895
if prop._dbus_access == "read":
611
if prop._dbus_access == u"read":
896
612
raise DBusPropertyAccessException(property_name)
897
if prop._dbus_get_args_options["byte_arrays"]:
613
if prop._dbus_get_args_options[u"byte_arrays"]:
898
614
# The byte_arrays option is not supported yet on
899
615
# signatures other than "ay".
900
if prop._dbus_signature != "ay":
616
if prop._dbus_signature != u"ay":
901
617
raise ValueError
902
value = dbus.ByteArray(b''.join(chr(byte)
903
for byte in value))
618
value = dbus.ByteArray(''.join(unichr(byte)
619
for byte in value))
904
620
prop(value)
905
621
906
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
907
out_signature="a{sv}")
622
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
623
out_signature=u"a{sv}")
908
624
def GetAll(self, interface_name):
909
625
"""Standard D-Bus property GetAll() method, see D-Bus
910
626
standard.
911
627
912
628
Note: Will not include properties with access="write".
913
629
"""
914
properties = {}
915
for name, prop in self._get_all_dbus_things("property"):
630
all = {}
631
for name, prop in self._get_all_dbus_properties():
916
632
if (interface_name
917
633
and interface_name != prop._dbus_interface):
918
634
# Interface non-empty but did not match
919
635
continue
920
636
# Ignore write-only properties
921
if prop._dbus_access == "write":
637
if prop._dbus_access == u"write":
922
638
continue
923
639
value = prop()
924
if not hasattr(value, "variant_level"):
925
properties[name] = value
640
if not hasattr(value, u"variant_level"):
641
all[name] = value
926
642
continue
927
properties[name] = type(value)(value, variant_level=
928
value.variant_level+1)
929
return dbus.Dictionary(properties, signature="sv")
643
all[name] = type(value)(value, variant_level=
644
value.variant_level+1)
645
return dbus.Dictionary(all, signature=u"sv")
930
646
931
647
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
932
out_signature="s",
648
out_signature=u"s",
933
649
path_keyword='object_path',
934
650
connection_keyword='connection')
935
651
def Introspect(self, object_path, connection):
936
"""Overloading of standard D-Bus method.
937
938
Inserts property tags and interface annotation tags.
652
"""Standard D-Bus method, overloaded to insert property tags.
939
653
"""
940
654
xmlstring = dbus.service.Object.Introspect(self, object_path,
941
655
connection)
942
656
try:
943
657
document = xml.dom.minidom.parseString(xmlstring)
944
658
def make_tag(document, name, prop):
945
e = document.createElement("property")
946
e.setAttribute("name", name)
947
e.setAttribute("type", prop._dbus_signature)
948
e.setAttribute("access", prop._dbus_access)
659
e = document.createElement(u"property")
660
e.setAttribute(u"name", name)
661
e.setAttribute(u"type", prop._dbus_signature)
662
e.setAttribute(u"access", prop._dbus_access)
949
663
return e
950
for if_tag in document.getElementsByTagName("interface"):
951
# Add property tags
664
for if_tag in document.getElementsByTagName(u"interface"):
952
665
for tag in (make_tag(document, name, prop)
953
666
for name, prop
954
in self._get_all_dbus_things("property")
667
in self._get_all_dbus_properties()
955
668
if prop._dbus_interface
956
== if_tag.getAttribute("name")):
669
== if_tag.getAttribute(u"name")):
957
670
if_tag.appendChild(tag)
958
# Add annotation tags
959
for typ in ("method", "signal", "property"):
960
for tag in if_tag.getElementsByTagName(typ):
961
annots = dict()
962
for name, prop in (self.
963
_get_all_dbus_things(typ)):
964
if (name == tag.getAttribute("name")
965
and prop._dbus_interface
966
== if_tag.getAttribute("name")):
967
annots.update(getattr
968
(prop,
969
"_dbus_annotations",
970
{}))
971
for name, value in annots.iteritems():
972
ann_tag = document.createElement(
973
"annotation")
974
ann_tag.setAttribute("name", name)
975
ann_tag.setAttribute("value", value)
976
tag.appendChild(ann_tag)
977
# Add interface annotation tags
978
for annotation, value in dict(
979
itertools.chain(
980
*(annotations().iteritems()
981
for name, annotations in
982
self._get_all_dbus_things("interface")
983
if name == if_tag.getAttribute("name")
984
))).iteritems():
985
ann_tag = document.createElement("annotation")
986
ann_tag.setAttribute("name", annotation)
987
ann_tag.setAttribute("value", value)
988
if_tag.appendChild(ann_tag)
989
671
# Add the names to the return values for the
990
672
# "org.freedesktop.DBus.Properties" methods
991
if (if_tag.getAttribute("name")
992
== "org.freedesktop.DBus.Properties"):
993
for cn in if_tag.getElementsByTagName("method"):
994
if cn.getAttribute("name") == "Get":
995
for arg in cn.getElementsByTagName("arg"):
996
if (arg.getAttribute("direction")
997
== "out"):
998
arg.setAttribute("name", "value")
999
elif cn.getAttribute("name") == "GetAll":
1000
for arg in cn.getElementsByTagName("arg"):
1001
if (arg.getAttribute("direction")
1002
== "out"):
1003
arg.setAttribute("name", "props")
1004
xmlstring = document.toxml("utf-8")
673
if (if_tag.getAttribute(u"name")
674
== u"org.freedesktop.DBus.Properties"):
675
for cn in if_tag.getElementsByTagName(u"method"):
676
if cn.getAttribute(u"name") == u"Get":
677
for arg in cn.getElementsByTagName(u"arg"):
678
if (arg.getAttribute(u"direction")
679
== u"out"):
680
arg.setAttribute(u"name", u"value")
681
elif cn.getAttribute(u"name") == u"GetAll":
682
for arg in cn.getElementsByTagName(u"arg"):
683
if (arg.getAttribute(u"direction")
684
== u"out"):
685
arg.setAttribute(u"name", u"props")
686
xmlstring = document.toxml(u"utf-8")
1005
687
document.unlink()
1006
688
except (AttributeError, xml.dom.DOMException,
1007
xml.parsers.expat.ExpatError) as error:
1008
logger.error("Failed to override Introspection method",
1009
exc_info=error)
689
xml.parsers.expat.ExpatError), error:
690
logger.error(u"Failed to override Introspection method",
691
error)
1010
692
return xmlstring
1011
693
1012
694
1013
def datetime_to_dbus (dt, variant_level=0):
1014
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1015
if dt is None:
1016
return dbus.String("", variant_level = variant_level)
1017
return dbus.String(dt.isoformat(),
1018
variant_level=variant_level)
1019
1020
1021
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
1022
.__metaclass__):
1023
"""Applied to an empty subclass of a D-Bus object, this metaclass
1024
will add additional D-Bus attributes matching a certain pattern.
1025
"""
1026
def __new__(mcs, name, bases, attr):
1027
# Go through all the base classes which could have D-Bus
1028
# methods, signals, or properties in them
1029
old_interface_names = []
1030
for base in (b for b in bases
1031
if issubclass(b, dbus.service.Object)):
1032
# Go though all attributes of the base class
1033
for attrname, attribute in inspect.getmembers(base):
1034
# Ignore non-D-Bus attributes, and D-Bus attributes
1035
# with the wrong interface name
1036
if (not hasattr(attribute, "_dbus_interface")
1037
or not attribute._dbus_interface
1038
.startswith("se.recompile.Mandos")):
1039
continue
1040
# Create an alternate D-Bus interface name based on
1041
# the current name
1042
alt_interface = (attribute._dbus_interface
1043
.replace("se.recompile.Mandos",
1044
"se.bsnet.fukt.Mandos"))
1045
if alt_interface != attribute._dbus_interface:
1046
old_interface_names.append(alt_interface)
1047
# Is this a D-Bus signal?
1048
if getattr(attribute, "_dbus_is_signal", False):
1049
# Extract the original non-method function by
1050
# black magic
1051
nonmethod_func = (dict(
1052
zip(attribute.func_code.co_freevars,
1053
attribute.__closure__))["func"]
1054
.cell_contents)
1055
# Create a new, but exactly alike, function
1056
# object, and decorate it to be a new D-Bus signal
1057
# with the alternate D-Bus interface name
1058
new_function = (dbus.service.signal
1059
(alt_interface,
1060
attribute._dbus_signature)
1061
(types.FunctionType(
1062
nonmethod_func.func_code,
1063
nonmethod_func.func_globals,
1064
nonmethod_func.func_name,
1065
nonmethod_func.func_defaults,
1066
nonmethod_func.func_closure)))
1067
# Copy annotations, if any
1068
try:
1069
new_function._dbus_annotations = (
1070
dict(attribute._dbus_annotations))
1071
except AttributeError:
1072
pass
1073
# Define a creator of a function to call both the
1074
# old and new functions, so both the old and new
1075
# signals gets sent when the function is called
1076
def fixscope(func1, func2):
1077
"""This function is a scope container to pass
1078
func1 and func2 to the "call_both" function
1079
outside of its arguments"""
1080
def call_both(*args, **kwargs):
1081
"""This function will emit two D-Bus
1082
signals by calling func1 and func2"""
1083
func1(*args, **kwargs)
1084
func2(*args, **kwargs)
1085
return call_both
1086
# Create the "call_both" function and add it to
1087
# the class
1088
attr[attrname] = fixscope(attribute,
1089
new_function)
1090
# Is this a D-Bus method?
1091
elif getattr(attribute, "_dbus_is_method", False):
1092
# Create a new, but exactly alike, function
1093
# object. Decorate it to be a new D-Bus method
1094
# with the alternate D-Bus interface name. Add it
1095
# to the class.
1096
attr[attrname] = (dbus.service.method
1097
(alt_interface,
1098
attribute._dbus_in_signature,
1099
attribute._dbus_out_signature)
1100
(types.FunctionType
1101
(attribute.func_code,
1102
attribute.func_globals,
1103
attribute.func_name,
1104
attribute.func_defaults,
1105
attribute.func_closure)))
1106
# Copy annotations, if any
1107
try:
1108
attr[attrname]._dbus_annotations = (
1109
dict(attribute._dbus_annotations))
1110
except AttributeError:
1111
pass
1112
# Is this a D-Bus property?
1113
elif getattr(attribute, "_dbus_is_property", False):
1114
# Create a new, but exactly alike, function
1115
# object, and decorate it to be a new D-Bus
1116
# property with the alternate D-Bus interface
1117
# name. Add it to the class.
1118
attr[attrname] = (dbus_service_property
1119
(alt_interface,
1120
attribute._dbus_signature,
1121
attribute._dbus_access,
1122
attribute
1123
._dbus_get_args_options
1124
["byte_arrays"])
1125
(types.FunctionType
1126
(attribute.func_code,
1127
attribute.func_globals,
1128
attribute.func_name,
1129
attribute.func_defaults,
1130
attribute.func_closure)))
1131
# Copy annotations, if any
1132
try:
1133
attr[attrname]._dbus_annotations = (
1134
dict(attribute._dbus_annotations))
1135
except AttributeError:
1136
pass
1137
# Is this a D-Bus interface?
1138
elif getattr(attribute, "_dbus_is_interface", False):
1139
# Create a new, but exactly alike, function
1140
# object. Decorate it to be a new D-Bus interface
1141
# with the alternate D-Bus interface name. Add it
1142
# to the class.
1143
attr[attrname] = (dbus_interface_annotations
1144
(alt_interface)
1145
(types.FunctionType
1146
(attribute.func_code,
1147
attribute.func_globals,
1148
attribute.func_name,
1149
attribute.func_defaults,
1150
attribute.func_closure)))
1151
# Deprecate all old interfaces
1152
basename="_AlternateDBusNamesMetaclass_interface_annotation{0}"
1153
for old_interface_name in old_interface_names:
1154
@dbus_interface_annotations(old_interface_name)
1155
def func(self):
1156
return { "org.freedesktop.DBus.Deprecated": "true" }
1157
# Find an unused name
1158
for aname in (basename.format(i) for i in
1159
itertools.count()):
1160
if aname not in attr:
1161
attr[aname] = func
1162
break
1163
return type.__new__(mcs, name, bases, attr)
1164
1165
1166
695
class ClientDBus(Client, DBusObjectWithProperties):
1167
696
"""A Client class using D-Bus
1168
697
1170
699
dbus_object_path: dbus.ObjectPath
1171
700
bus: dbus.SystemBus()
1172
701
"""
1173
1174
runtime_expansions = (Client.runtime_expansions
1175
+ ("dbus_object_path",))
1176
1177
702
# dbus.service.Object doesn't use super(), so we can't either.
1178
703
1179
704
def __init__(self, bus = None, *args, **kwargs):
1181
706
Client.__init__(self, *args, **kwargs)
1182
707
# Only now, when this client is initialized, can it show up on
1183
708
# the D-Bus
1184
client_object_name = unicode(self.name).translate(
1185
{ord("."): ord("_"),
1186
ord("-"): ord("_")})
1187
709
self.dbus_object_path = (dbus.ObjectPath
1188
("/clients/" + client_object_name))
710
(u"/clients/"
711
+ self.name.replace(u".", u"_")))
1189
712
DBusObjectWithProperties.__init__(self, self.bus,
1190
713
self.dbus_object_path)
1191
1192
def notifychangeproperty(transform_func,
1193
dbus_name, type_func=lambda x: x,
1194
variant_level=1):
1195
""" Modify a variable so that it's a property which announces
1196
its changes to DBus.
1197
1198
transform_fun: Function that takes a value and a variant_level
1199
and transforms it to a D-Bus type.
1200
dbus_name: D-Bus name of the variable
1201
type_func: Function that transform the value before sending it
1202
to the D-Bus. Default: no transform
1203
variant_level: D-Bus variant level. Default: 1
1204
"""
1205
attrname = "_{0}".format(dbus_name)
1206
def setter(self, value):
1207
if hasattr(self, "dbus_object_path"):
1208
if (not hasattr(self, attrname) or
1209
type_func(getattr(self, attrname, None))
1210
!= type_func(value)):
1211
dbus_value = transform_func(type_func(value),
1212
variant_level
1213
=variant_level)
1214
self.PropertyChanged(dbus.String(dbus_name),
1215
dbus_value)
1216
setattr(self, attrname, value)
1217
1218
return property(lambda self: getattr(self, attrname), setter)
1219
1220
1221
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1222
approvals_pending = notifychangeproperty(dbus.Boolean,
1223
"ApprovalPending",
1224
type_func = bool)
1225
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1226
last_enabled = notifychangeproperty(datetime_to_dbus,
1227
"LastEnabled")
1228
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1229
type_func = lambda checker:
1230
checker is not None)
1231
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1232
"LastCheckedOK")
1233
last_checker_status = notifychangeproperty(dbus.Int16,
1234
"LastCheckerStatus")
1235
last_approval_request = notifychangeproperty(
1236
datetime_to_dbus, "LastApprovalRequest")
1237
approved_by_default = notifychangeproperty(dbus.Boolean,
1238
"ApprovedByDefault")
1239
approval_delay = notifychangeproperty(dbus.UInt64,
1240
"ApprovalDelay",
1241
type_func =
1242
timedelta_to_milliseconds)
1243
approval_duration = notifychangeproperty(
1244
dbus.UInt64, "ApprovalDuration",
1245
type_func = timedelta_to_milliseconds)
1246
host = notifychangeproperty(dbus.String, "Host")
1247
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1248
type_func =
1249
timedelta_to_milliseconds)
1250
extended_timeout = notifychangeproperty(
1251
dbus.UInt64, "ExtendedTimeout",
1252
type_func = timedelta_to_milliseconds)
1253
interval = notifychangeproperty(dbus.UInt64,
1254
"Interval",
1255
type_func =
1256
timedelta_to_milliseconds)
1257
checker_command = notifychangeproperty(dbus.String, "Checker")
1258
1259
del notifychangeproperty
714
715
@staticmethod
716
def _datetime_to_dbus(dt, variant_level=0):
717
"""Convert a UTC datetime.datetime() to a D-Bus type."""
718
return dbus.String(dt.isoformat(),
719
variant_level=variant_level)
720
721
def enable(self):
722
oldstate = getattr(self, u"enabled", False)
723
r = Client.enable(self)
724
if oldstate != self.enabled:
725
# Emit D-Bus signals
726
self.PropertyChanged(dbus.String(u"enabled"),
727
dbus.Boolean(True, variant_level=1))
728
self.PropertyChanged(
729
dbus.String(u"last_enabled"),
730
self._datetime_to_dbus(self.last_enabled,
731
variant_level=1))
732
return r
733
734
def disable(self, quiet = False):
735
oldstate = getattr(self, u"enabled", False)
736
r = Client.disable(self, quiet=quiet)
737
if not quiet and oldstate != self.enabled:
738
# Emit D-Bus signal
739
self.PropertyChanged(dbus.String(u"enabled"),
740
dbus.Boolean(False, variant_level=1))
741
return r
1260
742
1261
743
def __del__(self, *args, **kwargs):
1262
744
try:
1263
745
self.remove_from_connection()
1264
746
except LookupError:
1265
747
pass
1266
if hasattr(DBusObjectWithProperties, "__del__"):
748
if hasattr(DBusObjectWithProperties, u"__del__"):
1267
749
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1268
750
Client.__del__(self, *args, **kwargs)
1269
751
1271
753
*args, **kwargs):
1272
754
self.checker_callback_tag = None
1273
755
self.checker = None
756
# Emit D-Bus signal
757
self.PropertyChanged(dbus.String(u"checker_running"),
758
dbus.Boolean(False, variant_level=1))
1274
759
if os.WIFEXITED(condition):
1275
760
exitstatus = os.WEXITSTATUS(condition)
1276
761
# Emit D-Bus signal
1286
771
return Client.checker_callback(self, pid, condition, command,
1287
772
*args, **kwargs)
1288
773
774
def checked_ok(self, *args, **kwargs):
775
r = Client.checked_ok(self, *args, **kwargs)
776
# Emit D-Bus signal
777
self.PropertyChanged(
778
dbus.String(u"last_checked_ok"),
779
(self._datetime_to_dbus(self.last_checked_ok,
780
variant_level=1)))
781
return r
782
1289
783
def start_checker(self, *args, **kwargs):
1290
784
old_checker = self.checker
1291
785
if self.checker is not None:
1298
792
and old_checker_pid != self.checker.pid):
1299
793
# Emit D-Bus signal
1300
794
self.CheckerStarted(self.current_checker_command)
795
self.PropertyChanged(
796
dbus.String(u"checker_running"),
797
dbus.Boolean(True, variant_level=1))
1301
798
return r
1302
799
800
def stop_checker(self, *args, **kwargs):
801
old_checker = getattr(self, u"checker", None)
802
r = Client.stop_checker(self, *args, **kwargs)
803
if (old_checker is not None
804
and getattr(self, u"checker", None) is None):
805
self.PropertyChanged(dbus.String(u"checker_running"),
806
dbus.Boolean(False, variant_level=1))
807
return r
808
1303
809
def _reset_approved(self):
1304
self.approved = None
810
self._approved = None
1305
811
return False
1306
812
1307
813
def approve(self, value=True):
1308
self.send_changedstate()
1309
self.approved = value
1310
gobject.timeout_add(timedelta_to_milliseconds
1311
(self.approval_duration),
1312
self._reset_approved)
814
self._approved = value
815
gobject.timeout_add(self._timedelta_to_milliseconds(self.approved_duration, self._reset_approved))
816
817
def approved_pending(self):
818
return self.approvals_pending > 0
1313
819
1314
820
1315
821
## D-Bus methods, signals & properties
1316
_interface = "se.recompile.Mandos.Client"
1317
1318
## Interfaces
1319
1320
@dbus_interface_annotations(_interface)
1321
def _foo(self):
1322
return { "org.freedesktop.DBus.Property.EmitsChangedSignal":
1323
"false"}
822
_interface = u"se.bsnet.fukt.Mandos.Client"
1324
823
1325
824
## Signals
1326
825
1327
826
# CheckerCompleted - signal
1328
@dbus.service.signal(_interface, signature="nxs")
827
@dbus.service.signal(_interface, signature=u"nxs")
1329
828
def CheckerCompleted(self, exitcode, waitstatus, command):
1330
829
"D-Bus signal"
1331
830
pass
1332
831
1333
832
# CheckerStarted - signal
1334
@dbus.service.signal(_interface, signature="s")
833
@dbus.service.signal(_interface, signature=u"s")
1335
834
def CheckerStarted(self, command):
1336
835
"D-Bus signal"
1337
836
pass
1338
837
1339
838
# PropertyChanged - signal
1340
@dbus.service.signal(_interface, signature="sv")
839
@dbus.service.signal(_interface, signature=u"sv")
1341
840
def PropertyChanged(self, property, value):
1342
841
"D-Bus signal"
1343
842
pass
1345
844
# GotSecret - signal
1346
845
@dbus.service.signal(_interface)
1347
846
def GotSecret(self):
1348
"""D-Bus signal
1349
Is sent after a successful transfer of secret from the Mandos
1350
server to mandos-client
1351
"""
1352
pass
847
"D-Bus signal"
848
if self.approved_pending():
849
self.PropertyChanged(dbus.String(u"checker_running"),
850
dbus.Boolean(False, variant_level=1))
1353
851
1354
852
# Rejected - signal
1355
@dbus.service.signal(_interface, signature="s")
853
@dbus.service.signal(_interface, signature=u"s")
1356
854
def Rejected(self, reason):
1357
855
"D-Bus signal"
1358
pass
856
if self.approved_pending():
857
self.PropertyChanged(dbus.String(u"checker_running"),
858
dbus.Boolean(False, variant_level=1))
1359
859
1360
860
# NeedApproval - signal
1361
@dbus.service.signal(_interface, signature="tb")
861
@dbus.service.signal(_interface, signature=u"db")
1362
862
def NeedApproval(self, timeout, default):
1363
863
"D-Bus signal"
1364
return self.need_approval()
864
if not self.approved_pending():
865
self.PropertyChanged(dbus.String(u"approved_pending"),
866
dbus.Boolean(True, variant_level=1))
1365
867
1366
868
## Methods
1367
869
1368
870
# Approve - method
1369
@dbus.service.method(_interface, in_signature="b")
871
@dbus.service.method(_interface, in_signature=u"b")
1370
872
def Approve(self, value):
1371
873
self.approve(value)
1372
874
1373
875
# CheckedOK - method
1374
876
@dbus.service.method(_interface)
1375
877
def CheckedOK(self):
1376
self.checked_ok()
878
return self.checked_ok()
1377
879
1378
880
# Enable - method
1379
881
@dbus.service.method(_interface)
1400
902
1401
903
## Properties
1402
904
1403
# ApprovalPending - property
1404
@dbus_service_property(_interface, signature="b", access="read")
1405
def ApprovalPending_dbus_property(self):
1406
return dbus.Boolean(bool(self.approvals_pending))
1407
1408
# ApprovedByDefault - property
1409
@dbus_service_property(_interface, signature="b",
1410
access="readwrite")
1411
def ApprovedByDefault_dbus_property(self, value=None):
1412
if value is None: # get
1413
return dbus.Boolean(self.approved_by_default)
1414
self.approved_by_default = bool(value)
1415
1416
# ApprovalDelay - property
1417
@dbus_service_property(_interface, signature="t",
1418
access="readwrite")
1419
def ApprovalDelay_dbus_property(self, value=None):
1420
if value is None: # get
1421
return dbus.UInt64(self.approval_delay_milliseconds())
1422
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1423
1424
# ApprovalDuration - property
1425
@dbus_service_property(_interface, signature="t",
1426
access="readwrite")
1427
def ApprovalDuration_dbus_property(self, value=None):
1428
if value is None: # get
1429
return dbus.UInt64(timedelta_to_milliseconds(
1430
self.approval_duration))
1431
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1432
1433
# Name - property
1434
@dbus_service_property(_interface, signature="s", access="read")
1435
def Name_dbus_property(self):
905
# approved_pending - property
906
@dbus_service_property(_interface, signature=u"b", access=u"read")
907
def approved_pending_dbus_property(self):
908
return dbus.Boolean(self.approved_pending())
909
910
# approved_by_default - property
911
@dbus_service_property(_interface, signature=u"b",
912
access=u"readwrite")
913
def approved_by_default_dbus_property(self):
914
return dbus.Boolean(self.approved_by_default)
915
916
# approved_delay - property
917
@dbus_service_property(_interface, signature=u"t",
918
access=u"readwrite")
919
def approved_delay_dbus_property(self):
920
return dbus.UInt64(self.approved_delay_milliseconds())
921
922
# approved_duration - property
923
@dbus_service_property(_interface, signature=u"t",
924
access=u"readwrite")
925
def approved_duration_dbus_property(self):
926
return dbus.UInt64(self._timedelta_to_milliseconds(
927
self.approved_duration))
928
929
# name - property
930
@dbus_service_property(_interface, signature=u"s", access=u"read")
931
def name_dbus_property(self):
1436
932
return dbus.String(self.name)
1437
933
1438
# Fingerprint - property
1439
@dbus_service_property(_interface, signature="s", access="read")
1440
def Fingerprint_dbus_property(self):
934
# fingerprint - property
935
@dbus_service_property(_interface, signature=u"s", access=u"read")
936
def fingerprint_dbus_property(self):
1441
937
return dbus.String(self.fingerprint)
1442
938
1443
# Host - property
1444
@dbus_service_property(_interface, signature="s",
1445
access="readwrite")
1446
def Host_dbus_property(self, value=None):
939
# host - property
940
@dbus_service_property(_interface, signature=u"s",
941
access=u"readwrite")
942
def host_dbus_property(self, value=None):
1447
943
if value is None: # get
1448
944
return dbus.String(self.host)
1449
self.host = unicode(value)
1450
1451
# Created - property
1452
@dbus_service_property(_interface, signature="s", access="read")
1453
def Created_dbus_property(self):
1454
return datetime_to_dbus(self.created)
1455
1456
# LastEnabled - property
1457
@dbus_service_property(_interface, signature="s", access="read")
1458
def LastEnabled_dbus_property(self):
1459
return datetime_to_dbus(self.last_enabled)
1460
1461
# Enabled - property
1462
@dbus_service_property(_interface, signature="b",
1463
access="readwrite")
1464
def Enabled_dbus_property(self, value=None):
945
self.host = value
946
# Emit D-Bus signal
947
self.PropertyChanged(dbus.String(u"host"),
948
dbus.String(value, variant_level=1))
949
950
# created - property
951
@dbus_service_property(_interface, signature=u"s", access=u"read")
952
def created_dbus_property(self):
953
return dbus.String(self._datetime_to_dbus(self.created))
954
955
# last_enabled - property
956
@dbus_service_property(_interface, signature=u"s", access=u"read")
957
def last_enabled_dbus_property(self):
958
if self.last_enabled is None:
959
return dbus.String(u"")
960
return dbus.String(self._datetime_to_dbus(self.last_enabled))
961
962
# enabled - property
963
@dbus_service_property(_interface, signature=u"b",
964
access=u"readwrite")
965
def enabled_dbus_property(self, value=None):
1465
966
if value is None: # get
1466
967
return dbus.Boolean(self.enabled)
1467
968
if value:
1469
970
else:
1470
971
self.disable()
1471
972
1472
# LastCheckedOK - property
1473
@dbus_service_property(_interface, signature="s",
1474
access="readwrite")
1475
def LastCheckedOK_dbus_property(self, value=None):
973
# last_checked_ok - property
974
@dbus_service_property(_interface, signature=u"s",
975
access=u"readwrite")
976
def last_checked_ok_dbus_property(self, value=None):
1476
977
if value is not None:
1477
978
self.checked_ok()
1478
979
return
1479
return datetime_to_dbus(self.last_checked_ok)
1480
1481
# LastCheckerStatus - property
1482
@dbus_service_property(_interface, signature="n",
1483
access="read")
1484
def LastCheckerStatus_dbus_property(self):
1485
return dbus.Int16(self.last_checker_status)
1486
1487
# Expires - property
1488
@dbus_service_property(_interface, signature="s", access="read")
1489
def Expires_dbus_property(self):
1490
return datetime_to_dbus(self.expires)
1491
1492
# LastApprovalRequest - property
1493
@dbus_service_property(_interface, signature="s", access="read")
1494
def LastApprovalRequest_dbus_property(self):
1495
return datetime_to_dbus(self.last_approval_request)
1496
1497
# Timeout - property
1498
@dbus_service_property(_interface, signature="t",
1499
access="readwrite")
1500
def Timeout_dbus_property(self, value=None):
980
if self.last_checked_ok is None:
981
return dbus.String(u"")
982
return dbus.String(self._datetime_to_dbus(self
983
.last_checked_ok))
984
985
# timeout - property
986
@dbus_service_property(_interface, signature=u"t",
987
access=u"readwrite")
988
def timeout_dbus_property(self, value=None):
1501
989
if value is None: # get
1502
990
return dbus.UInt64(self.timeout_milliseconds())
1503
991
self.timeout = datetime.timedelta(0, 0, 0, value)
992
# Emit D-Bus signal
993
self.PropertyChanged(dbus.String(u"timeout"),
994
dbus.UInt64(value, variant_level=1))
995
if getattr(self, u"disable_initiator_tag", None) is None:
996
return
1504
997
# Reschedule timeout
1505
if self.enabled:
1506
now = datetime.datetime.utcnow()
1507
time_to_die = timedelta_to_milliseconds(
1508
(self.last_checked_ok + self.timeout) - now)
1509
if time_to_die <= 0:
1510
# The timeout has passed
1511
self.disable()
1512
else:
1513
self.expires = (now +
1514
datetime.timedelta(milliseconds =
1515
time_to_die))
1516
if (getattr(self, "disable_initiator_tag", None)
1517
is None):
1518
return
1519
gobject.source_remove(self.disable_initiator_tag)
1520
self.disable_initiator_tag = (gobject.timeout_add
1521
(time_to_die,
1522
self.disable))
1523
1524
# ExtendedTimeout - property
1525
@dbus_service_property(_interface, signature="t",
1526
access="readwrite")
1527
def ExtendedTimeout_dbus_property(self, value=None):
1528
if value is None: # get
1529
return dbus.UInt64(self.extended_timeout_milliseconds())
1530
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1531
1532
# Interval - property
1533
@dbus_service_property(_interface, signature="t",
1534
access="readwrite")
1535
def Interval_dbus_property(self, value=None):
998
gobject.source_remove(self.disable_initiator_tag)
999
self.disable_initiator_tag = None
1000
time_to_die = (self.
1001
_timedelta_to_milliseconds((self
1002
.last_checked_ok
1003
+ self.timeout)
1004
- datetime.datetime
1005
.utcnow()))
1006
if time_to_die <= 0:
1007
# The timeout has passed
1008
self.disable()
1009
else:
1010
self.disable_initiator_tag = (gobject.timeout_add
1011
(time_to_die, self.disable))
1012
1013
# interval - property
1014
@dbus_service_property(_interface, signature=u"t",
1015
access=u"readwrite")
1016
def interval_dbus_property(self, value=None):
1536
1017
if value is None: # get
1537
1018
return dbus.UInt64(self.interval_milliseconds())
1538
1019
self.interval = datetime.timedelta(0, 0, 0, value)
1539
if getattr(self, "checker_initiator_tag", None) is None:
1020
# Emit D-Bus signal
1021
self.PropertyChanged(dbus.String(u"interval"),
1022
dbus.UInt64(value, variant_level=1))
1023
if getattr(self, u"checker_initiator_tag", None) is None:
1540
1024
return
1541
if self.enabled:
1542
# Reschedule checker run
1543
gobject.source_remove(self.checker_initiator_tag)
1544
self.checker_initiator_tag = (gobject.timeout_add
1545
(value, self.start_checker))
1546
self.start_checker() # Start one now, too
1547
1548
# Checker - property
1549
@dbus_service_property(_interface, signature="s",
1550
access="readwrite")
1551
def Checker_dbus_property(self, value=None):
1025
# Reschedule checker run
1026
gobject.source_remove(self.checker_initiator_tag)
1027
self.checker_initiator_tag = (gobject.timeout_add
1028
(value, self.start_checker))
1029
self.start_checker() # Start one now, too
1030
1031
# checker - property
1032
@dbus_service_property(_interface, signature=u"s",
1033
access=u"readwrite")
1034
def checker_dbus_property(self, value=None):
1552
1035
if value is None: # get
1553
1036
return dbus.String(self.checker_command)
1554
self.checker_command = unicode(value)
1037
self.checker_command = value
1038
# Emit D-Bus signal
1039
self.PropertyChanged(dbus.String(u"checker"),
1040
dbus.String(self.checker_command,
1041
variant_level=1))
1555
1042
1556
# CheckerRunning - property
1557
@dbus_service_property(_interface, signature="b",
1558
access="readwrite")
1559
def CheckerRunning_dbus_property(self, value=None):
1043
# checker_running - property
1044
@dbus_service_property(_interface, signature=u"b",
1045
access=u"readwrite")
1046
def checker_running_dbus_property(self, value=None):
1560
1047
if value is None: # get
1561
1048
return dbus.Boolean(self.checker is not None)
1562
1049
if value:
1564
1051
else:
1565
1052
self.stop_checker()
1566
1053
1567
# ObjectPath - property
1568
@dbus_service_property(_interface, signature="o", access="read")
1569
def ObjectPath_dbus_property(self):
1054
# object_path - property
1055
@dbus_service_property(_interface, signature=u"o", access=u"read")
1056
def object_path_dbus_property(self):
1570
1057
return self.dbus_object_path # is already a dbus.ObjectPath
1571
1058
1572
# Secret = property
1573
@dbus_service_property(_interface, signature="ay",
1574
access="write", byte_arrays=True)
1575
def Secret_dbus_property(self, value):
1059
# secret = property
1060
@dbus_service_property(_interface, signature=u"ay",
1061
access=u"write", byte_arrays=True)
1062
def secret_dbus_property(self, value):
1576
1063
self.secret = str(value)
1577
1064
1578
1065
del _interface
1584
1071
self._pipe.send(('init', fpr, address))
1585
1072
if not self._pipe.recv():
1586
1073
raise KeyError()
1587
1074
1588
1075
def __getattribute__(self, name):
1589
if name == '_pipe':
1076
if(name == '_pipe'):
1590
1077
return super(ProxyClient, self).__getattribute__(name)
1591
1078
self._pipe.send(('getattr', name))
1592
1079
data = self._pipe.recv()
1597
1084
self._pipe.send(('funcall', name, args, kwargs))
1598
1085
return self._pipe.recv()[1]
1599
1086
return func
1600
1087
1601
1088
def __setattr__(self, name, value):
1602
if name == '_pipe':
1089
if(name == '_pipe'):
1603
1090
return super(ProxyClient, self).__setattr__(name, value)
1604
1091
self._pipe.send(('setattr', name, value))
1605
1092
1606
1093
1607
class ClientDBusTransitional(ClientDBus):
1608
__metaclass__ = AlternateDBusNamesMetaclass
1609
1610
1611
1094
class ClientHandler(socketserver.BaseRequestHandler, object):
1612
1095
"""A class to handle client connections.
1613
1096
1616
1099
1617
1100
def handle(self):
1618
1101
with contextlib.closing(self.server.child_pipe) as child_pipe:
1619
logger.info("TCP connection from: %s",
1102
logger.info(u"TCP connection from: %s",
1620
1103
unicode(self.client_address))
1621
logger.debug("Pipe FD: %d",
1104
logger.debug(u"Pipe FD: %d",
1622
1105
self.server.child_pipe.fileno())
1623
1106
1624
1107
session = (gnutls.connection
1625
1108
.ClientSession(self.request,
1626
1109
gnutls.connection
1627
1110
.X509Credentials()))
1628
1111
1629
1112
# Note: gnutls.connection.X509Credentials is really a
1630
1113
# generic GnuTLS certificate credentials object so long as
1631
1114
# no X.509 keys are added to it. Therefore, we can use it
1632
1115
# here despite using OpenPGP certificates.
1633
1634
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1635
# "+AES-256-CBC", "+SHA1",
1636
# "+COMP-NULL", "+CTYPE-OPENPGP",
1637
# "+DHE-DSS"))
1116
1117
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1118
# u"+AES-256-CBC", u"+SHA1",
1119
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1120
# u"+DHE-DSS"))
1638
1121
# Use a fallback default, since this MUST be set.
1639
1122
priority = self.server.gnutls_priority
1640
1123
if priority is None:
1641
priority = "NORMAL"
1124
priority = u"NORMAL"
1642
1125
(gnutls.library.functions
1643
1126
.gnutls_priority_set_direct(session._c_object,
1644
1127
priority, None))
1645
1128
1646
1129
# Start communication using the Mandos protocol
1647
1130
# Get protocol number
1648
1131
line = self.request.makefile().readline()
1649
logger.debug("Protocol version: %r", line)
1132
logger.debug(u"Protocol version: %r", line)
1650
1133
try:
1651
1134
if int(line.strip().split()[0]) > 1:
1652
1135
raise RuntimeError
1653
except (ValueError, IndexError, RuntimeError) as error:
1654
logger.error("Unknown protocol version: %s", error)
1136
except (ValueError, IndexError, RuntimeError), error:
1137
logger.error(u"Unknown protocol version: %s", error)
1655
1138
return
1656
1139
1657
1140
# Start GnuTLS connection
1658
1141
try:
1659
1142
session.handshake()
1660
except gnutls.errors.GNUTLSError as error:
1661
logger.warning("Handshake failed: %s", error)
1143
except gnutls.errors.GNUTLSError, error:
1144
logger.warning(u"Handshake failed: %s", error)
1662
1145
# Do not run session.bye() here: the session is not
1663
1146
# established. Just abandon the request.
1664
1147
return
1665
logger.debug("Handshake succeeded")
1666
1148
logger.debug(u"Handshake succeeded")
1149
1667
1150
approval_required = False
1668
1151
try:
1669
1152
try:
1670
1153
fpr = self.fingerprint(self.peer_certificate
1671
1154
(session))
1672
except (TypeError,
1673
gnutls.errors.GNUTLSError) as error:
1674
logger.warning("Bad certificate: %s", error)
1155
except (TypeError, gnutls.errors.GNUTLSError), error:
1156
logger.warning(u"Bad certificate: %s", error)
1675
1157
return
1676
logger.debug("Fingerprint: %s", fpr)
1677
1158
logger.debug(u"Fingerprint: %s", fpr)
1159
1678
1160
try:
1679
1161
client = ProxyClient(child_pipe, fpr,
1680
1162
self.client_address)
1681
1163
except KeyError:
1682
1164
return
1683
1165
1684
if client.approval_delay:
1685
delay = client.approval_delay
1166
if client.approved_delay:
1167
delay = client.approved_delay
1686
1168
client.approvals_pending += 1
1687
1169
approval_required = True
1688
1170
1689
1171
while True:
1690
1172
if not client.enabled:
1691
logger.info("Client %s is disabled",
1173
logger.warning(u"Client %s is disabled",
1692
1174
client.name)
1693
1175
if self.server.use_dbus:
1694
1176
# Emit D-Bus signal
1695
client.Rejected("Disabled")
1177
client.Rejected("Disabled")
1696
1178
return
1697
1179
1698
if client.approved or not client.approval_delay:
1180
if client._approved or not client.approved_delay:
1699
1181
#We are approved or approval is disabled
1700
1182
break
1701
elif client.approved is None:
1702
logger.info("Client %s needs approval",
1183
elif client._approved is None:
1184
logger.info(u"Client %s need approval",
1703
1185
client.name)
1704
1186
if self.server.use_dbus:
1705
1187
# Emit D-Bus signal
1706
1188
client.NeedApproval(
1707
client.approval_delay_milliseconds(),
1189
client.approved_delay_milliseconds(),
1708
1190
client.approved_by_default)
1709
1191
else:
1710
logger.warning("Client %s was not approved",
1192
logger.warning(u"Client %s was not approved",
1711
1193
client.name)
1712
1194
if self.server.use_dbus:
1713
1195
# Emit D-Bus signal
1714
client.Rejected("Denied")
1196
client.Rejected("Disapproved")
1715
1197
return
1716
1198
1717
1199
#wait until timeout or approved
1200
#x = float(client._timedelta_to_milliseconds(delay))
1718
1201
time = datetime.datetime.now()
1719
1202
client.changedstate.acquire()
1720
(client.changedstate.wait
1721
(float(client.timedelta_to_milliseconds(delay)
1722
/ 1000)))
1203
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
1723
1204
client.changedstate.release()
1724
1205
time2 = datetime.datetime.now()
1725
1206
if (time2 - time) >= delay:
1729
1210
client.name)
1730
1211
if self.server.use_dbus:
1731
1212
# Emit D-Bus signal
1732
client.Rejected("Approval timed out")
1213
client.Rejected("Time out")
1733
1214
return
1734
1215
else:
1735
1216
break
1738
1219
1739
1220
sent_size = 0
1740
1221
while sent_size < len(client.secret):
1741
try:
1742
sent = session.send(client.secret[sent_size:])
1743
except gnutls.errors.GNUTLSError as error:
1744
logger.warning("gnutls send failed")
1745
return
1746
logger.debug("Sent: %d, remaining: %d",
1222
# XXX handle session exception
1223
sent = session.send(client.secret[sent_size:])
1224
logger.debug(u"Sent: %d, remaining: %d",
1747
1225
sent, len(client.secret)
1748
1226
- (sent_size + sent))
1749
1227
sent_size += sent
1750
1751
logger.info("Sending secret to %s", client.name)
1752
# bump the timeout using extended_timeout
1753
client.bump_timeout(client.extended_timeout)
1228
1229
logger.info(u"Sending secret to %s", client.name)
1230
# bump the timeout as if seen
1231
client.checked_ok()
1754
1232
if self.server.use_dbus:
1755
1233
# Emit D-Bus signal
1756
1234
client.GotSecret()
1758
1236
finally:
1759
1237
if approval_required:
1760
1238
client.approvals_pending -= 1
1761
try:
1762
session.bye()
1763
except gnutls.errors.GNUTLSError as error:
1764
logger.warning("GnuTLS bye failed")
1239
session.bye()
1765
1240
1766
1241
@staticmethod
1767
1242
def peer_certificate(session):
1777
1252
.gnutls_certificate_get_peers
1778
1253
(session._c_object, ctypes.byref(list_size)))
1779
1254
if not bool(cert_list) and list_size.value != 0:
1780
raise gnutls.errors.GNUTLSError("error getting peer"
1781
" certificate")
1255
raise gnutls.errors.GNUTLSError(u"error getting peer"
1256
u" certificate")
1782
1257
if list_size.value == 0:
1783
1258
return None
1784
1259
cert = cert_list[0]
1810
1285
if crtverify.value != 0:
1811
1286
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1812
1287
raise (gnutls.errors.CertificateSecurityError
1813
("Verify failed"))
1288
(u"Verify failed"))
1814
1289
# New buffer for the fingerprint
1815
1290
buf = ctypes.create_string_buffer(20)
1816
1291
buf_len = ctypes.c_size_t()
1823
1298
# Convert the buffer to a Python bytestring
1824
1299
fpr = ctypes.string_at(buf, buf_len.value)
1825
1300
# Convert the bytestring to hexadecimal notation
1826
hex_fpr = binascii.hexlify(fpr).upper()
1301
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1827
1302
return hex_fpr
1828
1303
1829
1304
1832
1307
def sub_process_main(self, request, address):
1833
1308
try:
1834
1309
self.finish_request(request, address)
1835
except Exception:
1310
except:
1836
1311
self.handle_error(request, address)
1837
1312
self.close_request(request)
1838
1313
1839
1314
def process_request(self, request, address):
1840
1315
"""Start a new process to process the request."""
1841
proc = multiprocessing.Process(target = self.sub_process_main,
1842
args = (request,
1843
address))
1844
proc.start()
1845
return proc
1846
1316
multiprocessing.Process(target = self.sub_process_main,
1317
args = (request, address)).start()
1847
1318
1848
1319
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1849
1320
""" adds a pipe to the MixIn """
1853
1324
This function creates a new pipe in self.pipe
1854
1325
"""
1855
1326
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1856
1857
proc = MultiprocessingMixIn.process_request(self, request,
1858
client_address)
1859
self.child_pipe.close()
1860
self.add_pipe(parent_pipe, proc)
1861
1862
def add_pipe(self, parent_pipe, proc):
1327
1328
super(MultiprocessingMixInWithPipe,
1329
self).process_request(request, client_address)
1330
self.add_pipe(parent_pipe)
1331
def add_pipe(self, parent_pipe):
1863
1332
"""Dummy function; override as necessary"""
1864
raise NotImplementedError
1865
1333
pass
1866
1334
1867
1335
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1868
1336
socketserver.TCPServer, object):
1886
1354
bind to an address or port if they were not specified."""
1887
1355
if self.interface is not None:
1888
1356
if SO_BINDTODEVICE is None:
1889
logger.error("SO_BINDTODEVICE does not exist;"
1890
" cannot bind to interface %s",
1357
logger.error(u"SO_BINDTODEVICE does not exist;"
1358
u" cannot bind to interface %s",
1891
1359
self.interface)
1892
1360
else:
1893
1361
try:
1894
1362
self.socket.setsockopt(socket.SOL_SOCKET,
1895
1363
SO_BINDTODEVICE,
1896
1364
str(self.interface
1897
+ '\0'))
1898
except socket.error as error:
1365
+ u'\0'))
1366
except socket.error, error:
1899
1367
if error[0] == errno.EPERM:
1900
logger.error("No permission to"
1901
" bind to interface %s",
1368
logger.error(u"No permission to"
1369
u" bind to interface %s",
1902
1370
self.interface)
1903
1371
elif error[0] == errno.ENOPROTOOPT:
1904
logger.error("SO_BINDTODEVICE not available;"
1905
" cannot bind to interface %s",
1372
logger.error(u"SO_BINDTODEVICE not available;"
1373
u" cannot bind to interface %s",
1906
1374
self.interface)
1907
1375
else:
1908
1376
raise
1910
1378
if self.server_address[0] or self.server_address[1]:
1911
1379
if not self.server_address[0]:
1912
1380
if self.address_family == socket.AF_INET6:
1913
any_address = "::" # in6addr_any
1381
any_address = u"::" # in6addr_any
1914
1382
else:
1915
1383
any_address = socket.INADDR_ANY
1916
1384
self.server_address = (any_address,
1943
1411
self.enabled = False
1944
1412
self.clients = clients
1945
1413
if self.clients is None:
1946
self.clients = {}
1414
self.clients = set()
1947
1415
self.use_dbus = use_dbus
1948
1416
self.gnutls_priority = gnutls_priority
1949
1417
IPv6_TCPServer.__init__(self, server_address,
1953
1421
def server_activate(self):
1954
1422
if self.enabled:
1955
1423
return socketserver.TCPServer.server_activate(self)
1956
1957
1424
def enable(self):
1958
1425
self.enabled = True
1959
1960
def add_pipe(self, parent_pipe, proc):
1426
def add_pipe(self, parent_pipe):
1961
1427
# Call "handle_ipc" for both data and EOF events
1962
1428
gobject.io_add_watch(parent_pipe.fileno(),
1963
1429
gobject.IO_IN | gobject.IO_HUP,
1964
1430
functools.partial(self.handle_ipc,
1965
parent_pipe =
1966
parent_pipe,
1967
proc = proc))
1968
1431
parent_pipe = parent_pipe))
1432
1969
1433
def handle_ipc(self, source, condition, parent_pipe=None,
1970
proc = None, client_object=None):
1434
client_object=None):
1971
1435
condition_names = {
1972
gobject.IO_IN: "IN", # There is data to read.
1973
gobject.IO_OUT: "OUT", # Data can be written (without
1436
gobject.IO_IN: u"IN", # There is data to read.
1437
gobject.IO_OUT: u"OUT", # Data can be written (without
1974
1438
# blocking).
1975
gobject.IO_PRI: "PRI", # There is urgent data to read.
1976
gobject.IO_ERR: "ERR", # Error condition.
1977
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1439
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1440
gobject.IO_ERR: u"ERR", # Error condition.
1441
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1978
1442
# broken, usually for pipes and
1979
1443
# sockets).
1980
1444
}
1982
1446
for cond, name in
1983
1447
condition_names.iteritems()
1984
1448
if cond & condition)
1985
# error, or the other end of multiprocessing.Pipe has closed
1986
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
1987
# Wait for other process to exit
1988
proc.join()
1989
return False
1449
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1450
conditions_string)
1990
1451
1991
1452
# Read a request from the child
1992
1453
request = parent_pipe.recv()
1996
1457
fpr = request[1]
1997
1458
address = request[2]
1998
1459
1999
for c in self.clients.itervalues():
1460
for c in self.clients:
2000
1461
if c.fingerprint == fpr:
2001
1462
client = c
2002
1463
break
2003
1464
else:
2004
logger.info("Client not found for fingerprint: %s, ad"
2005
"dress: %s", fpr, address)
1465
logger.warning(u"Client not found for fingerprint: %s, ad"
1466
u"dress: %s", fpr, address)
2006
1467
if self.use_dbus:
2007
1468
# Emit D-Bus signal
2008
mandos_dbus_service.ClientNotFound(fpr,
2009
address[0])
1469
mandos_dbus_service.ClientNotFound(fpr, address)
2010
1470
parent_pipe.send(False)
2011
1471
return False
2012
1472
2013
1473
gobject.io_add_watch(parent_pipe.fileno(),
2014
1474
gobject.IO_IN | gobject.IO_HUP,
2015
1475
functools.partial(self.handle_ipc,
2016
parent_pipe =
2017
parent_pipe,
2018
proc = proc,
2019
client_object =
2020
client))
1476
parent_pipe = parent_pipe,
1477
client_object = client))
2021
1478
parent_pipe.send(True)
2022
# remove the old hook in favor of the new above hook on
2023
# same fileno
1479
# remove the old hook in favor of the new above hook on same fileno
2024
1480
return False
2025
1481
if command == 'funcall':
2026
1482
funcname = request[1]
2027
1483
args = request[2]
2028
1484
kwargs = request[3]
2029
1485
2030
parent_pipe.send(('data', getattr(client_object,
2031
funcname)(*args,
2032
**kwargs)))
2033
1486
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
1487
2034
1488
if command == 'getattr':
2035
1489
attrname = request[1]
2036
1490
if callable(client_object.__getattribute__(attrname)):
2037
1491
parent_pipe.send(('function',))
2038
1492
else:
2039
parent_pipe.send(('data', client_object
2040
.__getattribute__(attrname)))
2041
1493
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
1494
2042
1495
if command == 'setattr':
2043
1496
attrname = request[1]
2044
1497
value = request[2]
2045
1498
setattr(client_object, attrname, value)
2046
1499
2047
1500
return True
2048
1501
2049
1502
2050
1503
def string_to_delta(interval):
2051
1504
"""Parse a string and return a datetime.timedelta
2052
1505
2053
>>> string_to_delta('7d')
1506
>>> string_to_delta(u'7d')
2054
1507
datetime.timedelta(7)
2055
>>> string_to_delta('60s')
1508
>>> string_to_delta(u'60s')
2056
1509
datetime.timedelta(0, 60)
2057
>>> string_to_delta('60m')
1510
>>> string_to_delta(u'60m')
2058
1511
datetime.timedelta(0, 3600)
2059
>>> string_to_delta('24h')
1512
>>> string_to_delta(u'24h')
2060
1513
datetime.timedelta(1)
2061
>>> string_to_delta('1w')
1514
>>> string_to_delta(u'1w')
2062
1515
datetime.timedelta(7)
2063
>>> string_to_delta('5m 30s')
1516
>>> string_to_delta(u'5m 30s')
2064
1517
datetime.timedelta(0, 330)
2065
1518
"""
2066
1519
timevalue = datetime.timedelta(0)
2068
1521
try:
2069
1522
suffix = unicode(s[-1])
2070
1523
value = int(s[:-1])
2071
if suffix == "d":
1524
if suffix == u"d":
2072
1525
delta = datetime.timedelta(value)
2073
elif suffix == "s":
1526
elif suffix == u"s":
2074
1527
delta = datetime.timedelta(0, value)
2075
elif suffix == "m":
1528
elif suffix == u"m":
2076
1529
delta = datetime.timedelta(0, 0, 0, 0, value)
2077
elif suffix == "h":
1530
elif suffix == u"h":
2078
1531
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
2079
elif suffix == "w":
1532
elif suffix == u"w":
2080
1533
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2081
1534
else:
2082
raise ValueError("Unknown suffix %r" % suffix)
2083
except (ValueError, IndexError) as e:
2084
raise ValueError(*(e.args))
1535
raise ValueError(u"Unknown suffix %r" % suffix)
1536
except (ValueError, IndexError), e:
1537
raise ValueError(e.message)
2085
1538
timevalue += delta
2086
1539
return timevalue
2087
1540
2088
1541
1542
def if_nametoindex(interface):
1543
"""Call the C function if_nametoindex(), or equivalent
1544
1545
Note: This function cannot accept a unicode string."""
1546
global if_nametoindex
1547
try:
1548
if_nametoindex = (ctypes.cdll.LoadLibrary
1549
(ctypes.util.find_library(u"c"))
1550
.if_nametoindex)
1551
except (OSError, AttributeError):
1552
logger.warning(u"Doing if_nametoindex the hard way")
1553
def if_nametoindex(interface):
1554
"Get an interface index the hard way, i.e. using fcntl()"
1555
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1556
with contextlib.closing(socket.socket()) as s:
1557
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1558
struct.pack(str(u"16s16x"),
1559
interface))
1560
interface_index = struct.unpack(str(u"I"),
1561
ifreq[16:20])[0]
1562
return interface_index
1563
return if_nametoindex(interface)
1564
1565
2089
1566
def daemon(nochdir = False, noclose = False):
2090
1567
"""See daemon(3). Standard BSD Unix function.
2091
1568
2094
1571
sys.exit()
2095
1572
os.setsid()
2096
1573
if not nochdir:
2097
os.chdir("/")
1574
os.chdir(u"/")
2098
1575
if os.fork():
2099
1576
sys.exit()
2100
1577
if not noclose:
2101
1578
# Close all standard open file descriptors
2102
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1579
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2103
1580
if not stat.S_ISCHR(os.fstat(null).st_mode):
2104
1581
raise OSError(errno.ENODEV,
2105
"%s not a character device"
2106
% os.devnull)
1582
u"%s not a character device"
1583
% os.path.devnull)
2107
1584
os.dup2(null, sys.stdin.fileno())
2108
1585
os.dup2(null, sys.stdout.fileno())
2109
1586
os.dup2(null, sys.stderr.fileno())
2116
1593
##################################################################
2117
1594
# Parsing of options, both command line and config file
2118
1595
2119
parser = argparse.ArgumentParser()
2120
parser.add_argument("-v", "--version", action="version",
2121
version = "%%(prog)s %s" % version,
2122
help="show version number and exit")
2123
parser.add_argument("-i", "--interface", metavar="IF",
2124
help="Bind to interface IF")
2125
parser.add_argument("-a", "--address",
2126
help="Address to listen for requests on")
2127
parser.add_argument("-p", "--port", type=int,
2128
help="Port number to receive requests on")
2129
parser.add_argument("--check", action="store_true",
2130
help="Run self-test")
2131
parser.add_argument("--debug", action="store_true",
2132
help="Debug mode; run in foreground and log"
2133
" to terminal")
2134
parser.add_argument("--debuglevel", metavar="LEVEL",
2135
help="Debug level for stdout output")
2136
parser.add_argument("--priority", help="GnuTLS"
2137
" priority string (see GnuTLS documentation)")
2138
parser.add_argument("--servicename",
2139
metavar="NAME", help="Zeroconf service name")
2140
parser.add_argument("--configdir",
2141
default="/etc/mandos", metavar="DIR",
2142
help="Directory to search for configuration"
2143
" files")
2144
parser.add_argument("--no-dbus", action="store_false",
2145
dest="use_dbus", help="Do not provide D-Bus"
2146
" system bus interface")
2147
parser.add_argument("--no-ipv6", action="store_false",
2148
dest="use_ipv6", help="Do not use IPv6")
2149
parser.add_argument("--no-restore", action="store_false",
2150
dest="restore", help="Do not restore stored"
2151
" state")
2152
parser.add_argument("--statedir", metavar="DIR",
2153
help="Directory to save/restore state in")
2154
2155
options = parser.parse_args()
1596
parser = optparse.OptionParser(version = "%%prog %s" % version)
1597
parser.add_option("-i", u"--interface", type=u"string",
1598
metavar="IF", help=u"Bind to interface IF")
1599
parser.add_option("-a", u"--address", type=u"string",
1600
help=u"Address to listen for requests on")
1601
parser.add_option("-p", u"--port", type=u"int",
1602
help=u"Port number to receive requests on")
1603
parser.add_option("--check", action=u"store_true",
1604
help=u"Run self-test")
1605
parser.add_option("--debug", action=u"store_true",
1606
help=u"Debug mode; run in foreground and log to"
1607
u" terminal")
1608
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1609
u" priority string (see GnuTLS documentation)")
1610
parser.add_option("--servicename", type=u"string",
1611
metavar=u"NAME", help=u"Zeroconf service name")
1612
parser.add_option("--configdir", type=u"string",
1613
default=u"/etc/mandos", metavar=u"DIR",
1614
help=u"Directory to search for configuration"
1615
u" files")
1616
parser.add_option("--no-dbus", action=u"store_false",
1617
dest=u"use_dbus", help=u"Do not provide D-Bus"
1618
u" system bus interface")
1619
parser.add_option("--no-ipv6", action=u"store_false",
1620
dest=u"use_ipv6", help=u"Do not use IPv6")
1621
options = parser.parse_args()[0]
2156
1622
2157
1623
if options.check:
2158
1624
import doctest
2160
1626
sys.exit()
2161
1627
2162
1628
# Default values for config file for server-global settings
2163
server_defaults = { "interface": "",
2164
"address": "",
2165
"port": "",
2166
"debug": "False",
2167
"priority":
2168
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2169
"servicename": "Mandos",
2170
"use_dbus": "True",
2171
"use_ipv6": "True",
2172
"debuglevel": "",
2173
"restore": "True",
2174
"statedir": "/var/lib/mandos"
1629
server_defaults = { u"interface": u"",
1630
u"address": u"",
1631
u"port": u"",
1632
u"debug": u"False",
1633
u"priority":
1634
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1635
u"servicename": u"Mandos",
1636
u"use_dbus": u"True",
1637
u"use_ipv6": u"True",
2175
1638
}
2176
1639
2177
1640
# Parse config file for server-global settings
2178
1641
server_config = configparser.SafeConfigParser(server_defaults)
2179
1642
del server_defaults
2180
1643
server_config.read(os.path.join(options.configdir,
2181
"mandos.conf"))
1644
u"mandos.conf"))
2182
1645
# Convert the SafeConfigParser object to a dict
2183
1646
server_settings = server_config.defaults()
2184
1647
# Use the appropriate methods on the non-string config options
2185
for option in ("debug", "use_dbus", "use_ipv6"):
2186
server_settings[option] = server_config.getboolean("DEFAULT",
1648
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1649
server_settings[option] = server_config.getboolean(u"DEFAULT",
2187
1650
option)
2188
1651
if server_settings["port"]:
2189
server_settings["port"] = server_config.getint("DEFAULT",
2190
"port")
1652
server_settings["port"] = server_config.getint(u"DEFAULT",
1653
u"port")
2191
1654
del server_config
2192
1655
2193
1656
# Override the settings from the config file with command line
2194
1657
# options, if set.
2195
for option in ("interface", "address", "port", "debug",
2196
"priority", "servicename", "configdir",
2197
"use_dbus", "use_ipv6", "debuglevel", "restore",
2198
"statedir"):
1658
for option in (u"interface", u"address", u"port", u"debug",
1659
u"priority", u"servicename", u"configdir",
1660
u"use_dbus", u"use_ipv6"):
2199
1661
value = getattr(options, option)
2200
1662
if value is not None:
2201
1663
server_settings[option] = value
2209
1671
##################################################################
2210
1672
2211
1673
# For convenience
2212
debug = server_settings["debug"]
2213
debuglevel = server_settings["debuglevel"]
2214
use_dbus = server_settings["use_dbus"]
2215
use_ipv6 = server_settings["use_ipv6"]
2216
stored_state_path = os.path.join(server_settings["statedir"],
2217
stored_state_file)
2218
2219
if debug:
2220
initlogger(debug, logging.DEBUG)
2221
else:
2222
if not debuglevel:
2223
initlogger(debug)
2224
else:
2225
level = getattr(logging, debuglevel.upper())
2226
initlogger(debug, level)
2227
2228
if server_settings["servicename"] != "Mandos":
1674
debug = server_settings[u"debug"]
1675
use_dbus = server_settings[u"use_dbus"]
1676
use_ipv6 = server_settings[u"use_ipv6"]
1677
1678
if not debug:
1679
syslogger.setLevel(logging.WARNING)
1680
console.setLevel(logging.WARNING)
1681
1682
if server_settings[u"servicename"] != u"Mandos":
2229
1683
syslogger.setFormatter(logging.Formatter
2230
('Mandos (%s) [%%(process)d]:'
2231
' %%(levelname)s: %%(message)s'
2232
% server_settings["servicename"]))
1684
(u'Mandos (%s) [%%(process)d]:'
1685
u' %%(levelname)s: %%(message)s'
1686
% server_settings[u"servicename"]))
2233
1687
2234
1688
# Parse config file with clients
2235
client_config = configparser.SafeConfigParser(Client
2236
.client_defaults)
2237
client_config.read(os.path.join(server_settings["configdir"],
2238
"clients.conf"))
1689
client_defaults = { u"timeout": u"1h",
1690
u"interval": u"5m",
1691
u"checker": u"fping -q -- %%(host)s",
1692
u"host": u"",
1693
u"approved_delay": u"0s",
1694
u"approved_duration": u"1s",
1695
}
1696
client_config = configparser.SafeConfigParser(client_defaults)
1697
client_config.read(os.path.join(server_settings[u"configdir"],
1698
u"clients.conf"))
2239
1699
2240
1700
global mandos_dbus_service
2241
1701
mandos_dbus_service = None
2242
1702
2243
tcp_server = MandosServer((server_settings["address"],
2244
server_settings["port"]),
1703
tcp_server = MandosServer((server_settings[u"address"],
1704
server_settings[u"port"]),
2245
1705
ClientHandler,
2246
interface=(server_settings["interface"]
2247
or None),
1706
interface=server_settings[u"interface"],
2248
1707
use_ipv6=use_ipv6,
2249
1708
gnutls_priority=
2250
server_settings["priority"],
1709
server_settings[u"priority"],
2251
1710
use_dbus=use_dbus)
2252
if not debug:
2253
pidfilename = "/var/run/mandos.pid"
2254
try:
2255
pidfile = open(pidfilename, "w")
2256
except IOError:
2257
logger.error("Could not open file %r", pidfilename)
1711
pidfilename = u"/var/run/mandos.pid"
1712
try:
1713
pidfile = open(pidfilename, u"w")
1714
except IOError:
1715
logger.error(u"Could not open file %r", pidfilename)
2258
1716
2259
1717
try:
2260
uid = pwd.getpwnam("_mandos").pw_uid
2261
gid = pwd.getpwnam("_mandos").pw_gid
1718
uid = pwd.getpwnam(u"_mandos").pw_uid
1719
gid = pwd.getpwnam(u"_mandos").pw_gid
2262
1720
except KeyError:
2263
1721
try:
2264
uid = pwd.getpwnam("mandos").pw_uid
2265
gid = pwd.getpwnam("mandos").pw_gid
1722
uid = pwd.getpwnam(u"mandos").pw_uid
1723
gid = pwd.getpwnam(u"mandos").pw_gid
2266
1724
except KeyError:
2267
1725
try:
2268
uid = pwd.getpwnam("nobody").pw_uid
2269
gid = pwd.getpwnam("nobody").pw_gid
1726
uid = pwd.getpwnam(u"nobody").pw_uid
1727
gid = pwd.getpwnam(u"nobody").pw_gid
2270
1728
except KeyError:
2271
1729
uid = 65534
2272
1730
gid = 65534
2273
1731
try:
2274
1732
os.setgid(gid)
2275
1733
os.setuid(uid)
2276
except OSError as error:
1734
except OSError, error:
2277
1735
if error[0] != errno.EPERM:
2278
1736
raise error
2279
1737
1738
# Enable all possible GnuTLS debugging
2280
1739
if debug:
2281
# Enable all possible GnuTLS debugging
2282
2283
1740
# "Use a log level over 10 to enable all debugging options."
2284
1741
# - GnuTLS manual
2285
1742
gnutls.library.functions.gnutls_global_set_log_level(11)
2286
1743
2287
1744
@gnutls.library.types.gnutls_log_func
2288
1745
def debug_gnutls(level, string):
2289
logger.debug("GnuTLS: %s", string[:-1])
1746
logger.debug(u"GnuTLS: %s", string[:-1])
2290
1747
2291
1748
(gnutls.library.functions
2292
1749
.gnutls_global_set_log_function(debug_gnutls))
2293
2294
# Redirect stdin so all checkers get /dev/null
2295
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2296
os.dup2(null, sys.stdin.fileno())
2297
if null > 2:
2298
os.close(null)
2299
2300
# Need to fork before connecting to D-Bus
2301
if not debug:
2302
# Close all input and output, do double fork, etc.
2303
daemon()
2304
2305
gobject.threads_init()
2306
1750
2307
1751
global main_loop
2308
1752
# From the Avahi example code
2309
DBusGMainLoop(set_as_default=True)
1753
DBusGMainLoop(set_as_default=True )
2310
1754
main_loop = gobject.MainLoop()
2311
1755
bus = dbus.SystemBus()
2312
1756
# End of Avahi example code
2313
1757
if use_dbus:
2314
1758
try:
2315
bus_name = dbus.service.BusName("se.recompile.Mandos",
1759
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
2316
1760
bus, do_not_queue=True)
2317
old_bus_name = (dbus.service.BusName
2318
("se.bsnet.fukt.Mandos", bus,
2319
do_not_queue=True))
2320
except dbus.exceptions.NameExistsException as e:
2321
logger.error(unicode(e) + ", disabling D-Bus")
1761
except dbus.exceptions.NameExistsException, e:
1762
logger.error(unicode(e) + u", disabling D-Bus")
2322
1763
use_dbus = False
2323
server_settings["use_dbus"] = False
1764
server_settings[u"use_dbus"] = False
2324
1765
tcp_server.use_dbus = False
2325
1766
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2326
service = AvahiServiceToSyslog(name =
2327
server_settings["servicename"],
2328
servicetype = "_mandos._tcp",
2329
protocol = protocol, bus = bus)
1767
service = AvahiService(name = server_settings[u"servicename"],
1768
servicetype = u"_mandos._tcp",
1769
protocol = protocol, bus = bus)
2330
1770
if server_settings["interface"]:
2331
1771
service.interface = (if_nametoindex
2332
(str(server_settings["interface"])))
2333
2334
global multiprocessing_manager
2335
multiprocessing_manager = multiprocessing.Manager()
1772
(str(server_settings[u"interface"])))
2336
1773
2337
1774
client_class = Client
2338
1775
if use_dbus:
2339
client_class = functools.partial(ClientDBusTransitional,
2340
bus = bus)
2341
2342
client_settings = Client.config_parser(client_config)
2343
old_client_settings = {}
2344
clients_data = {}
2345
2346
# Get client data and settings from last running state.
2347
if server_settings["restore"]:
2348
try:
2349
with open(stored_state_path, "rb") as stored_state:
2350
clients_data, old_client_settings = (pickle.load
2351
(stored_state))
2352
os.remove(stored_state_path)
2353
except IOError as e:
2354
logger.warning("Could not load persistent state: {0}"
2355
.format(e))
2356
if e.errno != errno.ENOENT:
2357
raise
2358
except EOFError as e:
2359
logger.warning("Could not load persistent state: "
2360
"EOFError: {0}".format(e))
2361
2362
with PGPEngine() as pgp:
2363
for client_name, client in clients_data.iteritems():
2364
# Decide which value to use after restoring saved state.
2365
# We have three different values: Old config file,
2366
# new config file, and saved state.
2367
# New config value takes precedence if it differs from old
2368
# config value, otherwise use saved state.
2369
for name, value in client_settings[client_name].items():
2370
try:
2371
# For each value in new config, check if it
2372
# differs from the old config value (Except for
2373
# the "secret" attribute)
2374
if (name != "secret" and
2375
value != old_client_settings[client_name]
2376
[name]):
2377
client[name] = value
2378
except KeyError:
2379
pass
2380
2381
# Clients who has passed its expire date can still be
2382
# enabled if its last checker was successful. Clients
2383
# whose checker succeeded before we stored its state is
2384
# assumed to have successfully run all checkers during
2385
# downtime.
2386
if client["enabled"]:
2387
if datetime.datetime.utcnow() >= client["expires"]:
2388
if not client["last_checked_ok"]:
2389
logger.warning(
2390
"disabling client {0} - Client never "
2391
"performed a successful checker"
2392
.format(client_name))
2393
client["enabled"] = False
2394
elif client["last_checker_status"] != 0:
2395
logger.warning(
2396
"disabling client {0} - Client "
2397
"last checker failed with error code {1}"
2398
.format(client_name,
2399
client["last_checker_status"]))
2400
client["enabled"] = False
2401
else:
2402
client["expires"] = (datetime.datetime
2403
.utcnow()
2404
+ client["timeout"])
2405
logger.debug("Last checker succeeded,"
2406
" keeping {0} enabled"
2407
.format(client_name))
1776
client_class = functools.partial(ClientDBus, bus = bus)
1777
def client_config_items(config, section):
1778
special_settings = {
1779
"approved_by_default":
1780
lambda: config.getboolean(section,
1781
"approved_by_default"),
1782
}
1783
for name, value in config.items(section):
2408
1784
try:
2409
client["secret"] = (
2410
pgp.decrypt(client["encrypted_secret"],
2411
client_settings[client_name]
2412
["secret"]))
2413
except PGPError:
2414
# If decryption fails, we use secret from new settings
2415
logger.debug("Failed to decrypt {0} old secret"
2416
.format(client_name))
2417
client["secret"] = (
2418
client_settings[client_name]["secret"])
2419
2420
2421
# Add/remove clients based on new changes made to config
2422
for client_name in (set(old_client_settings)
2423
- set(client_settings)):
2424
del clients_data[client_name]
2425
for client_name in (set(client_settings)
2426
- set(old_client_settings)):
2427
clients_data[client_name] = client_settings[client_name]
2428
2429
# Create all client objects
2430
for client_name, client in clients_data.iteritems():
2431
tcp_server.clients[client_name] = client_class(
2432
name = client_name, settings = client)
2433
1785
yield (name, special_settings[name]())
1786
except KeyError:
1787
yield (name, value)
1788
1789
tcp_server.clients.update(set(
1790
client_class(name = section,
1791
config= dict(client_config_items(
1792
client_config, section)))
1793
for section in client_config.sections()))
2434
1794
if not tcp_server.clients:
2435
logger.warning("No clients defined")
2436
1795
logger.warning(u"No clients defined")
1796
1797
if debug:
1798
# Redirect stdin so all checkers get /dev/null
1799
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1800
os.dup2(null, sys.stdin.fileno())
1801
if null > 2:
1802
os.close(null)
1803
else:
1804
# No console logging
1805
logger.removeHandler(console)
1806
# Close all input and output, do double fork, etc.
1807
daemon()
1808
1809
try:
1810
with pidfile:
1811
pid = os.getpid()
1812
pidfile.write(str(pid) + "\n")
1813
del pidfile
1814
except IOError:
1815
logger.error(u"Could not write to file %r with PID %d",
1816
pidfilename, pid)
1817
except NameError:
1818
# "pidfile" was never created
1819
pass
1820
del pidfilename
1821
2437
1822
if not debug:
2438
try:
2439
with pidfile:
2440
pid = os.getpid()
2441
pidfile.write(str(pid) + "\n".encode("utf-8"))
2442
del pidfile
2443
except IOError:
2444
logger.error("Could not write to file %r with PID %d",
2445
pidfilename, pid)
2446
except NameError:
2447
# "pidfile" was never created
2448
pass
2449
del pidfilename
2450
1823
signal.signal(signal.SIGINT, signal.SIG_IGN)
2451
2452
1824
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2453
1825
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2454
1826
2455
1827
if use_dbus:
2456
class MandosDBusService(DBusObjectWithProperties):
1828
class MandosDBusService(dbus.service.Object):
2457
1829
"""A D-Bus proxy object"""
2458
1830
def __init__(self):
2459
dbus.service.Object.__init__(self, bus, "/")
2460
_interface = "se.recompile.Mandos"
2461
2462
@dbus_interface_annotations(_interface)
2463
def _foo(self):
2464
return { "org.freedesktop.DBus.Property"
2465
".EmitsChangedSignal":
2466
"false"}
2467
2468
@dbus.service.signal(_interface, signature="o")
1831
dbus.service.Object.__init__(self, bus, u"/")
1832
_interface = u"se.bsnet.fukt.Mandos"
1833
1834
@dbus.service.signal(_interface, signature=u"o")
2469
1835
def ClientAdded(self, objpath):
2470
1836
"D-Bus signal"
2471
1837
pass
2472
1838
2473
@dbus.service.signal(_interface, signature="ss")
1839
@dbus.service.signal(_interface, signature=u"ss")
2474
1840
def ClientNotFound(self, fingerprint, address):
2475
1841
"D-Bus signal"
2476
1842
pass
2477
1843
2478
@dbus.service.signal(_interface, signature="os")
1844
@dbus.service.signal(_interface, signature=u"os")
2479
1845
def ClientRemoved(self, objpath, name):
2480
1846
"D-Bus signal"
2481
1847
pass
2482
1848
2483
@dbus.service.method(_interface, out_signature="ao")
1849
@dbus.service.method(_interface, out_signature=u"ao")
2484
1850
def GetAllClients(self):
2485
1851
"D-Bus method"
2486
1852
return dbus.Array(c.dbus_object_path
2487
for c in
2488
tcp_server.clients.itervalues())
1853
for c in tcp_server.clients)
2489
1854
2490
1855
@dbus.service.method(_interface,
2491
out_signature="a{oa{sv}}")
1856
out_signature=u"a{oa{sv}}")
2492
1857
def GetAllClientsWithProperties(self):
2493
1858
"D-Bus method"
2494
1859
return dbus.Dictionary(
2495
((c.dbus_object_path, c.GetAll(""))
2496
for c in tcp_server.clients.itervalues()),
2497
signature="oa{sv}")
1860
((c.dbus_object_path, c.GetAll(u""))
1861
for c in tcp_server.clients),
1862
signature=u"oa{sv}")
2498
1863
2499
@dbus.service.method(_interface, in_signature="o")
1864
@dbus.service.method(_interface, in_signature=u"o")
2500
1865
def RemoveClient(self, object_path):
2501
1866
"D-Bus method"
2502
for c in tcp_server.clients.itervalues():
1867
for c in tcp_server.clients:
2503
1868
if c.dbus_object_path == object_path:
2504
del tcp_server.clients[c.name]
1869
tcp_server.clients.remove(c)
2505
1870
c.remove_from_connection()
2506
1871
# Don't signal anything except ClientRemoved
2507
1872
c.disable(quiet=True)
2512
1877
2513
1878
del _interface
2514
1879
2515
class MandosDBusServiceTransitional(MandosDBusService):
2516
__metaclass__ = AlternateDBusNamesMetaclass
2517
mandos_dbus_service = MandosDBusServiceTransitional()
1880
mandos_dbus_service = MandosDBusService()
2518
1881
2519
1882
def cleanup():
2520
1883
"Cleanup function; run on exit"
2521
1884
service.cleanup()
2522
1885
2523
multiprocessing.active_children()
2524
if not (tcp_server.clients or client_settings):
2525
return
2526
2527
# Store client before exiting. Secrets are encrypted with key
2528
# based on what config file has. If config file is
2529
# removed/edited, old secret will thus be unrecovable.
2530
clients = {}
2531
with PGPEngine() as pgp:
2532
for client in tcp_server.clients.itervalues():
2533
key = client_settings[client.name]["secret"]
2534
client.encrypted_secret = pgp.encrypt(client.secret,
2535
key)
2536
client_dict = {}
2537
2538
# A list of attributes that can not be pickled
2539
# + secret.
2540
exclude = set(("bus", "changedstate", "secret",
2541
"checker"))
2542
for name, typ in (inspect.getmembers
2543
(dbus.service.Object)):
2544
exclude.add(name)
2545
2546
client_dict["encrypted_secret"] = (client
2547
.encrypted_secret)
2548
for attr in client.client_structure:
2549
if attr not in exclude:
2550
client_dict[attr] = getattr(client, attr)
2551
2552
clients[client.name] = client_dict
2553
del client_settings[client.name]["secret"]
2554
2555
try:
2556
tempfd, tempname = tempfile.mkstemp(suffix=".pickle",
2557
prefix="clients-",
2558
dir=os.path.dirname
2559
(stored_state_path))
2560
with os.fdopen(tempfd, "wb") as stored_state:
2561
pickle.dump((clients, client_settings), stored_state)
2562
os.rename(tempname, stored_state_path)
2563
except (IOError, OSError) as e:
2564
logger.warning("Could not save persistent state: {0}"
2565
.format(e))
2566
if not debug:
2567
try:
2568
os.remove(tempname)
2569
except NameError:
2570
pass
2571
if e.errno not in set((errno.ENOENT, errno.EACCES,
2572
errno.EEXIST)):
2573
raise e
2574
2575
# Delete all clients, and settings from config
2576
1886
while tcp_server.clients:
2577
name, client = tcp_server.clients.popitem()
1887
client = tcp_server.clients.pop()
2578
1888
if use_dbus:
2579
1889
client.remove_from_connection()
1890
client.disable_hook = None
2580
1891
# Don't signal anything except ClientRemoved
2581
1892
client.disable(quiet=True)
2582
1893
if use_dbus:
2583
1894
# Emit D-Bus signal
2584
mandos_dbus_service.ClientRemoved(client
2585
.dbus_object_path,
1895
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
2586
1896
client.name)
2587
client_settings.clear()
2588
1897
2589
1898
atexit.register(cleanup)
2590
1899
2591
for client in tcp_server.clients.itervalues():
1900
for client in tcp_server.clients:
2592
1901
if use_dbus:
2593
1902
# Emit D-Bus signal
2594
1903
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2595
# Need to initiate checking of clients
2596
if client.enabled:
2597
client.init_checker()
1904
client.enable()
2598
1905
2599
1906
tcp_server.enable()
2600
1907
tcp_server.server_activate()
2602
1909
# Find out what port we got
2603
1910
service.port = tcp_server.socket.getsockname()[1]
2604
1911
if use_ipv6:
2605
logger.info("Now listening on address %r, port %d,"
1912
logger.info(u"Now listening on address %r, port %d,"
2606
1913
" flowinfo %d, scope_id %d"
2607
1914
% tcp_server.socket.getsockname())
2608
1915
else: # IPv4
2609
logger.info("Now listening on address %r, port %d"
1916
logger.info(u"Now listening on address %r, port %d"
2610
1917
% tcp_server.socket.getsockname())
2611
1918
2612
1919
#service.interface = tcp_server.socket.getsockname()[3]
2615
1922
# From the Avahi example code
2616
1923
try:
2617
1924
service.activate()
2618
except dbus.exceptions.DBusException as error:
2619
logger.critical("D-Bus Exception", exc_info=error)
1925
except dbus.exceptions.DBusException, error:
1926
logger.critical(u"DBusException: %s", error)
2620
1927
cleanup()
2621
1928
sys.exit(1)
2622
1929
# End of Avahi example code
2626
1933
(tcp_server.handle_request
2627
1934
(*args[2:], **kwargs) or True))
2628
1935
2629
logger.debug("Starting main loop")
1936
logger.debug(u"Starting main loop")
2630
1937
main_loop.run()
2631
except AvahiError as error:
2632
logger.critical("Avahi Error", exc_info=error)
1938
except AvahiError, error:
1939
logger.critical(u"AvahiError: %s", error)
2633
1940
cleanup()
2634
1941
sys.exit(1)
2635
1942
except KeyboardInterrupt:
2636
1943
if debug:
2637
print("", file=sys.stderr)
2638
logger.debug("Server received KeyboardInterrupt")
2639
logger.debug("Server exiting")
1944
print >> sys.stderr
1945
logger.debug(u"Server received KeyboardInterrupt")
1946
logger.debug(u"Server exiting")
2640
1947
# Must run before the D-Bus bus name gets deregistered
2641
1948
cleanup()
2642
1949
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0