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- Committer: Teddy Hogeborn
- Date: 2013-10-22 19:46:35 UTC
- Revision ID: teddy@recompile.se-20131022194635-ll6jyg1snrxwe94o
* TODO
- files added:
- debian/mandos-client.examples
- debian/source
- network-hooks.d
- files modified:
- .bzrignore
added
removed
mandos
11
11
# "AvahiService" class, and some lines in "main".
12
12
#
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# Everything else is
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# Copyright © 2008-2010 Teddy Hogeborn
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# Copyright © 2008-2010 Björn Påhlsson
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# Copyright © 2008-2013 Teddy Hogeborn
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# Copyright © 2008-2013 Björn Påhlsson
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# along with this program. If not, see
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# <http://www.gnu.org/licenses/>.
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#
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# Contact the authors at <mandos@fukt.bsnet.se>.
31
# Contact the authors at <mandos@recompile.se>.
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32
#
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33
34
from __future__ import division, with_statement, absolute_import
34
from __future__ import (division, absolute_import, print_function,
35
unicode_literals)
36
37
from future_builtins import *
35
38
36
39
import SocketServer as socketserver
37
40
import socket
38
import optparse
41
import argparse
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42
import datetime
40
43
import errno
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44
import gnutls.crypto
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64
import functools
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import cPickle as pickle
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66
import multiprocessing
67
import types
68
import binascii
69
import tempfile
70
import itertools
71
import collections
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72
65
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import dbus
66
74
import dbus.service
80
88
except ImportError:
81
89
SO_BINDTODEVICE = None
82
90
83
84
version = "1.0.14"
85
86
#logger = logging.getLogger(u'mandos')
87
logger = logging.Logger(u'mandos')
91
version = "1.6.1"
92
stored_state_file = "clients.pickle"
93
94
logger = logging.getLogger()
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95
syslogger = (logging.handlers.SysLogHandler
89
96
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
90
address = "/dev/log"))
91
syslogger.setFormatter(logging.Formatter
92
(u'Mandos [%(process)d]: %(levelname)s:'
93
u' %(message)s'))
94
logger.addHandler(syslogger)
95
96
console = logging.StreamHandler()
97
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
98
u' %(levelname)s:'
99
u' %(message)s'))
100
logger.addHandler(console)
97
address = str("/dev/log")))
98
99
try:
100
if_nametoindex = (ctypes.cdll.LoadLibrary
101
(ctypes.util.find_library("c"))
102
.if_nametoindex)
103
except (OSError, AttributeError):
104
def if_nametoindex(interface):
105
"Get an interface index the hard way, i.e. using fcntl()"
106
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
107
with contextlib.closing(socket.socket()) as s:
108
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
109
struct.pack(str("16s16x"),
110
interface))
111
interface_index = struct.unpack(str("I"),
112
ifreq[16:20])[0]
113
return interface_index
114
115
116
def initlogger(debug, level=logging.WARNING):
117
"""init logger and add loglevel"""
118
119
syslogger.setFormatter(logging.Formatter
120
('Mandos [%(process)d]: %(levelname)s:'
121
' %(message)s'))
122
logger.addHandler(syslogger)
123
124
if debug:
125
console = logging.StreamHandler()
126
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
127
' [%(process)d]:'
128
' %(levelname)s:'
129
' %(message)s'))
130
logger.addHandler(console)
131
logger.setLevel(level)
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133
134
class PGPError(Exception):
135
"""Exception if encryption/decryption fails"""
136
pass
137
138
139
class PGPEngine(object):
140
"""A simple class for OpenPGP symmetric encryption & decryption"""
141
def __init__(self):
142
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
143
self.gnupgargs = ['--batch',
144
'--home', self.tempdir,
145
'--force-mdc',
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'--quiet',
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'--no-use-agent']
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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()
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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
encoded = b"mandos" + binascii.hexlify(password)
176
if len(encoded) > 2048:
177
# GnuPG can't handle long passwords, so encode differently
178
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
179
.replace(b"\n", b"\\n")
180
.replace(b"\0", b"\\x00"))
181
return encoded
182
183
def encrypt(self, data, password):
184
passphrase = self.password_encode(password)
185
with tempfile.NamedTemporaryFile(dir=self.tempdir
186
) as passfile:
187
passfile.write(passphrase)
188
passfile.flush()
189
proc = subprocess.Popen(['gpg', '--symmetric',
190
'--passphrase-file',
191
passfile.name]
192
+ self.gnupgargs,
193
stdin = subprocess.PIPE,
194
stdout = subprocess.PIPE,
195
stderr = subprocess.PIPE)
196
ciphertext, err = proc.communicate(input = data)
197
if proc.returncode != 0:
198
raise PGPError(err)
199
return ciphertext
200
201
def decrypt(self, data, password):
202
passphrase = self.password_encode(password)
203
with tempfile.NamedTemporaryFile(dir = self.tempdir
204
) as passfile:
205
passfile.write(passphrase)
206
passfile.flush()
207
proc = subprocess.Popen(['gpg', '--decrypt',
208
'--passphrase-file',
209
passfile.name]
210
+ self.gnupgargs,
211
stdin = subprocess.PIPE,
212
stdout = subprocess.PIPE,
213
stderr = subprocess.PIPE)
214
decrypted_plaintext, err = proc.communicate(input
215
= data)
216
if proc.returncode != 0:
217
raise PGPError(err)
218
return decrypted_plaintext
219
101
220
102
221
class AvahiError(Exception):
103
222
def __init__(self, value, *args, **kwargs):
119
238
Attributes:
120
239
interface: integer; avahi.IF_UNSPEC or an interface index.
121
240
Used to optionally bind to the specified interface.
122
name: string; Example: u'Mandos'
123
type: string; Example: u'_mandos._tcp'.
124
See <http://www.dns-sd.org/ServiceTypes.html>
241
name: string; Example: 'Mandos'
242
type: string; Example: '_mandos._tcp'.
243
See <https://www.iana.org/assignments/service-names-port-numbers>
125
244
port: integer; what port to announce
126
245
TXT: list of strings; TXT record for the service
127
246
domain: string; Domain to publish on, default to .local if empty.
133
252
server: D-Bus Server
134
253
bus: dbus.SystemBus()
135
254
"""
255
136
256
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
137
257
servicetype = None, port = None, TXT = None,
138
domain = u"", host = u"", max_renames = 32768,
258
domain = "", host = "", max_renames = 32768,
139
259
protocol = avahi.PROTO_UNSPEC, bus = None):
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260
self.interface = interface
141
261
self.name = name
150
270
self.group = None # our entry group
151
271
self.server = None
152
272
self.bus = bus
273
self.entry_group_state_changed_match = None
274
153
275
def rename(self):
154
276
"""Derived from the Avahi example code"""
155
277
if self.rename_count >= self.max_renames:
156
logger.critical(u"No suitable Zeroconf service name found"
157
u" after %i retries, exiting.",
278
logger.critical("No suitable Zeroconf service name found"
279
" after %i retries, exiting.",
158
280
self.rename_count)
159
raise AvahiServiceError(u"Too many renames")
160
self.name = unicode(self.server.GetAlternativeServiceName(self.name))
161
logger.info(u"Changing Zeroconf service name to %r ...",
281
raise AvahiServiceError("Too many renames")
282
self.name = unicode(self.server
283
.GetAlternativeServiceName(self.name))
284
logger.info("Changing Zeroconf service name to %r ...",
162
285
self.name)
163
syslogger.setFormatter(logging.Formatter
164
(u'Mandos (%s) [%%(process)d]:'
165
u' %%(levelname)s: %%(message)s'
166
% self.name))
167
286
self.remove()
168
287
try:
169
288
self.add()
170
except dbus.exceptions.DBusException, error:
171
logger.critical(u"DBusException: %s", error)
289
except dbus.exceptions.DBusException as error:
290
logger.critical("D-Bus Exception", exc_info=error)
172
291
self.cleanup()
173
292
os._exit(1)
174
293
self.rename_count += 1
294
175
295
def remove(self):
176
296
"""Derived from the Avahi example code"""
297
if self.entry_group_state_changed_match is not None:
298
self.entry_group_state_changed_match.remove()
299
self.entry_group_state_changed_match = None
177
300
if self.group is not None:
178
301
self.group.Reset()
302
179
303
def add(self):
180
304
"""Derived from the Avahi example code"""
305
self.remove()
181
306
if self.group is None:
182
307
self.group = dbus.Interface(
183
308
self.bus.get_object(avahi.DBUS_NAME,
184
309
self.server.EntryGroupNew()),
185
310
avahi.DBUS_INTERFACE_ENTRY_GROUP)
186
self.group.connect_to_signal('StateChanged',
187
self
188
.entry_group_state_changed)
189
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
311
self.entry_group_state_changed_match = (
312
self.group.connect_to_signal(
313
'StateChanged', self.entry_group_state_changed))
314
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
190
315
self.name, self.type)
191
316
self.group.AddService(
192
317
self.interface,
197
322
dbus.UInt16(self.port),
198
323
avahi.string_array_to_txt_array(self.TXT))
199
324
self.group.Commit()
325
200
326
def entry_group_state_changed(self, state, error):
201
327
"""Derived from the Avahi example code"""
202
logger.debug(u"Avahi entry group state change: %i", state)
328
logger.debug("Avahi entry group state change: %i", state)
203
329
204
330
if state == avahi.ENTRY_GROUP_ESTABLISHED:
205
logger.debug(u"Zeroconf service established.")
331
logger.debug("Zeroconf service established.")
206
332
elif state == avahi.ENTRY_GROUP_COLLISION:
207
logger.warning(u"Zeroconf service name collision.")
333
logger.info("Zeroconf service name collision.")
208
334
self.rename()
209
335
elif state == avahi.ENTRY_GROUP_FAILURE:
210
logger.critical(u"Avahi: Error in group state changed %s",
336
logger.critical("Avahi: Error in group state changed %s",
211
337
unicode(error))
212
raise AvahiGroupError(u"State changed: %s"
213
% unicode(error))
338
raise AvahiGroupError("State changed: {0!s}"
339
.format(error))
340
214
341
def cleanup(self):
215
342
"""Derived from the Avahi example code"""
216
343
if self.group is not None:
217
self.group.Free()
344
try:
345
self.group.Free()
346
except (dbus.exceptions.UnknownMethodException,
347
dbus.exceptions.DBusException):
348
pass
218
349
self.group = None
219
def server_state_changed(self, state):
350
self.remove()
351
352
def server_state_changed(self, state, error=None):
220
353
"""Derived from the Avahi example code"""
221
logger.debug(u"Avahi server state change: %i", state)
222
if state == avahi.SERVER_COLLISION:
223
logger.error(u"Zeroconf server name collision")
224
self.remove()
354
logger.debug("Avahi server state change: %i", state)
355
bad_states = { avahi.SERVER_INVALID:
356
"Zeroconf server invalid",
357
avahi.SERVER_REGISTERING: None,
358
avahi.SERVER_COLLISION:
359
"Zeroconf server name collision",
360
avahi.SERVER_FAILURE:
361
"Zeroconf server failure" }
362
if state in bad_states:
363
if bad_states[state] is not None:
364
if error is None:
365
logger.error(bad_states[state])
366
else:
367
logger.error(bad_states[state] + ": %r", error)
368
self.cleanup()
225
369
elif state == avahi.SERVER_RUNNING:
226
370
self.add()
371
else:
372
if error is None:
373
logger.debug("Unknown state: %r", state)
374
else:
375
logger.debug("Unknown state: %r: %r", state, error)
376
227
377
def activate(self):
228
378
"""Derived from the Avahi example code"""
229
379
if self.server is None:
230
380
self.server = dbus.Interface(
231
381
self.bus.get_object(avahi.DBUS_NAME,
232
avahi.DBUS_PATH_SERVER),
382
avahi.DBUS_PATH_SERVER,
383
follow_name_owner_changes=True),
233
384
avahi.DBUS_INTERFACE_SERVER)
234
self.server.connect_to_signal(u"StateChanged",
385
self.server.connect_to_signal("StateChanged",
235
386
self.server_state_changed)
236
387
self.server_state_changed(self.server.GetState())
237
388
238
389
390
class AvahiServiceToSyslog(AvahiService):
391
def rename(self):
392
"""Add the new name to the syslog messages"""
393
ret = AvahiService.rename(self)
394
syslogger.setFormatter(logging.Formatter
395
('Mandos ({0}) [%(process)d]:'
396
' %(levelname)s: %(message)s'
397
.format(self.name)))
398
return ret
399
400
401
def timedelta_to_milliseconds(td):
402
"Convert a datetime.timedelta() to milliseconds"
403
return ((td.days * 24 * 60 * 60 * 1000)
404
+ (td.seconds * 1000)
405
+ (td.microseconds // 1000))
406
407
239
408
class Client(object):
240
409
"""A representation of a client host served by this server.
241
410
242
411
Attributes:
243
_approved: bool(); 'None' if not yet approved/disapproved
412
approved: bool(); 'None' if not yet approved/disapproved
244
413
approval_delay: datetime.timedelta(); Time to wait for approval
245
414
approval_duration: datetime.timedelta(); Duration of one approval
246
415
checker: subprocess.Popen(); a running checker process used
253
422
instance %(name)s can be used in the command.
254
423
checker_initiator_tag: a gobject event source tag, or None
255
424
created: datetime.datetime(); (UTC) object creation
425
client_structure: Object describing what attributes a client has
426
and is used for storing the client at exit
256
427
current_checker_command: string; current running checker_command
257
disable_hook: If set, called by disable() as disable_hook(self)
258
428
disable_initiator_tag: a gobject event source tag, or None
259
429
enabled: bool()
260
430
fingerprint: string (40 or 32 hexadecimal digits); used to
263
433
interval: datetime.timedelta(); How often to start a new checker
264
434
last_approval_request: datetime.datetime(); (UTC) or None
265
435
last_checked_ok: datetime.datetime(); (UTC) or None
266
last_enabled: datetime.datetime(); (UTC)
436
last_checker_status: integer between 0 and 255 reflecting exit
437
status of last checker. -1 reflects crashed
438
checker, -2 means no checker completed yet.
439
last_enabled: datetime.datetime(); (UTC) or None
267
440
name: string; from the config file, used in log messages and
268
441
D-Bus identifiers
269
442
secret: bytestring; sent verbatim (over TLS) to client
270
443
timeout: datetime.timedelta(); How long from last_checked_ok
271
444
until this client is disabled
445
extended_timeout: extra long timeout when secret has been sent
272
446
runtime_expansions: Allowed attributes for runtime expansion.
447
expires: datetime.datetime(); time (UTC) when a client will be
448
disabled, or None
449
server_settings: The server_settings dict from main()
273
450
"""
274
451
275
runtime_expansions = (u"approval_delay", u"approval_duration",
276
u"created", u"enabled", u"fingerprint",
277
u"host", u"interval", u"last_checked_ok",
278
u"last_enabled", u"name", u"timeout")
279
280
@staticmethod
281
def _timedelta_to_milliseconds(td):
282
"Convert a datetime.timedelta() to milliseconds"
283
return ((td.days * 24 * 60 * 60 * 1000)
284
+ (td.seconds * 1000)
285
+ (td.microseconds // 1000))
452
runtime_expansions = ("approval_delay", "approval_duration",
453
"created", "enabled", "expires",
454
"fingerprint", "host", "interval",
455
"last_approval_request", "last_checked_ok",
456
"last_enabled", "name", "timeout")
457
client_defaults = { "timeout": "PT5M",
458
"extended_timeout": "PT15M",
459
"interval": "PT2M",
460
"checker": "fping -q -- %%(host)s",
461
"host": "",
462
"approval_delay": "PT0S",
463
"approval_duration": "PT1S",
464
"approved_by_default": "True",
465
"enabled": "True",
466
}
286
467
287
468
def timeout_milliseconds(self):
288
469
"Return the 'timeout' attribute in milliseconds"
289
return self._timedelta_to_milliseconds(self.timeout)
470
return timedelta_to_milliseconds(self.timeout)
471
472
def extended_timeout_milliseconds(self):
473
"Return the 'extended_timeout' attribute in milliseconds"
474
return timedelta_to_milliseconds(self.extended_timeout)
290
475
291
476
def interval_milliseconds(self):
292
477
"Return the 'interval' attribute in milliseconds"
293
return self._timedelta_to_milliseconds(self.interval)
294
478
return timedelta_to_milliseconds(self.interval)
479
295
480
def approval_delay_milliseconds(self):
296
return self._timedelta_to_milliseconds(self.approval_delay)
297
298
def __init__(self, name = None, disable_hook=None, config=None):
299
"""Note: the 'checker' key in 'config' sets the
300
'checker_command' attribute and *not* the 'checker'
301
attribute."""
481
return timedelta_to_milliseconds(self.approval_delay)
482
483
@staticmethod
484
def config_parser(config):
485
"""Construct a new dict of client settings of this form:
486
{ client_name: {setting_name: value, ...}, ...}
487
with exceptions for any special settings as defined above.
488
NOTE: Must be a pure function. Must return the same result
489
value given the same arguments.
490
"""
491
settings = {}
492
for client_name in config.sections():
493
section = dict(config.items(client_name))
494
client = settings[client_name] = {}
495
496
client["host"] = section["host"]
497
# Reformat values from string types to Python types
498
client["approved_by_default"] = config.getboolean(
499
client_name, "approved_by_default")
500
client["enabled"] = config.getboolean(client_name,
501
"enabled")
502
503
client["fingerprint"] = (section["fingerprint"].upper()
504
.replace(" ", ""))
505
if "secret" in section:
506
client["secret"] = section["secret"].decode("base64")
507
elif "secfile" in section:
508
with open(os.path.expanduser(os.path.expandvars
509
(section["secfile"])),
510
"rb") as secfile:
511
client["secret"] = secfile.read()
512
else:
513
raise TypeError("No secret or secfile for section {0}"
514
.format(section))
515
client["timeout"] = string_to_delta(section["timeout"])
516
client["extended_timeout"] = string_to_delta(
517
section["extended_timeout"])
518
client["interval"] = string_to_delta(section["interval"])
519
client["approval_delay"] = string_to_delta(
520
section["approval_delay"])
521
client["approval_duration"] = string_to_delta(
522
section["approval_duration"])
523
client["checker_command"] = section["checker"]
524
client["last_approval_request"] = None
525
client["last_checked_ok"] = None
526
client["last_checker_status"] = -2
527
528
return settings
529
530
def __init__(self, settings, name = None, server_settings=None):
302
531
self.name = name
303
if config is None:
304
config = {}
305
logger.debug(u"Creating client %r", self.name)
532
if server_settings is None:
533
server_settings = {}
534
self.server_settings = server_settings
535
# adding all client settings
536
for setting, value in settings.iteritems():
537
setattr(self, setting, value)
538
539
if self.enabled:
540
if not hasattr(self, "last_enabled"):
541
self.last_enabled = datetime.datetime.utcnow()
542
if not hasattr(self, "expires"):
543
self.expires = (datetime.datetime.utcnow()
544
+ self.timeout)
545
else:
546
self.last_enabled = None
547
self.expires = None
548
549
logger.debug("Creating client %r", self.name)
306
550
# Uppercase and remove spaces from fingerprint for later
307
551
# comparison purposes with return value from the fingerprint()
308
552
# function
309
self.fingerprint = (config[u"fingerprint"].upper()
310
.replace(u" ", u""))
311
logger.debug(u" Fingerprint: %s", self.fingerprint)
312
if u"secret" in config:
313
self.secret = config[u"secret"].decode(u"base64")
314
elif u"secfile" in config:
315
with open(os.path.expanduser(os.path.expandvars
316
(config[u"secfile"])),
317
"rb") as secfile:
318
self.secret = secfile.read()
319
else:
320
raise TypeError(u"No secret or secfile for client %s"
321
% self.name)
322
self.host = config.get(u"host", u"")
323
self.created = datetime.datetime.utcnow()
324
self.enabled = False
325
self.last_approval_request = None
326
self.last_enabled = None
327
self.last_checked_ok = None
328
self.timeout = string_to_delta(config[u"timeout"])
329
self.interval = string_to_delta(config[u"interval"])
330
self.disable_hook = disable_hook
553
logger.debug(" Fingerprint: %s", self.fingerprint)
554
self.created = settings.get("created",
555
datetime.datetime.utcnow())
556
557
# attributes specific for this server instance
331
558
self.checker = None
332
559
self.checker_initiator_tag = None
333
560
self.disable_initiator_tag = None
334
561
self.checker_callback_tag = None
335
self.checker_command = config[u"checker"]
336
562
self.current_checker_command = None
337
self.last_connect = None
338
self._approved = None
339
self.approved_by_default = config.get(u"approved_by_default",
340
True)
563
self.approved = None
341
564
self.approvals_pending = 0
342
self.approval_delay = string_to_delta(
343
config[u"approval_delay"])
344
self.approval_duration = string_to_delta(
345
config[u"approval_duration"])
346
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
565
self.changedstate = (multiprocessing_manager
566
.Condition(multiprocessing_manager
567
.Lock()))
568
self.client_structure = [attr for attr in
569
self.__dict__.iterkeys()
570
if not attr.startswith("_")]
571
self.client_structure.append("client_structure")
572
573
for name, t in inspect.getmembers(type(self),
574
lambda obj:
575
isinstance(obj,
576
property)):
577
if not name.startswith("_"):
578
self.client_structure.append(name)
347
579
580
# Send notice to process children that client state has changed
348
581
def send_changedstate(self):
349
self.changedstate.acquire()
350
self.changedstate.notify_all()
351
self.changedstate.release()
352
582
with self.changedstate:
583
self.changedstate.notify_all()
584
353
585
def enable(self):
354
586
"""Start this client's checker and timeout hooks"""
355
if getattr(self, u"enabled", False):
587
if getattr(self, "enabled", False):
356
588
# Already enabled
357
589
return
358
self.send_changedstate()
590
self.expires = datetime.datetime.utcnow() + self.timeout
591
self.enabled = True
359
592
self.last_enabled = datetime.datetime.utcnow()
593
self.init_checker()
594
self.send_changedstate()
595
596
def disable(self, quiet=True):
597
"""Disable this client."""
598
if not getattr(self, "enabled", False):
599
return False
600
if not quiet:
601
logger.info("Disabling client %s", self.name)
602
if getattr(self, "disable_initiator_tag", None) is not None:
603
gobject.source_remove(self.disable_initiator_tag)
604
self.disable_initiator_tag = None
605
self.expires = None
606
if getattr(self, "checker_initiator_tag", None) is not None:
607
gobject.source_remove(self.checker_initiator_tag)
608
self.checker_initiator_tag = None
609
self.stop_checker()
610
self.enabled = False
611
if not quiet:
612
self.send_changedstate()
613
# Do not run this again if called by a gobject.timeout_add
614
return False
615
616
def __del__(self):
617
self.disable()
618
619
def init_checker(self):
360
620
# Schedule a new checker to be started an 'interval' from now,
361
621
# and every interval from then on.
622
if self.checker_initiator_tag is not None:
623
gobject.source_remove(self.checker_initiator_tag)
362
624
self.checker_initiator_tag = (gobject.timeout_add
363
625
(self.interval_milliseconds(),
364
626
self.start_checker))
365
627
# Schedule a disable() when 'timeout' has passed
628
if self.disable_initiator_tag is not None:
629
gobject.source_remove(self.disable_initiator_tag)
366
630
self.disable_initiator_tag = (gobject.timeout_add
367
631
(self.timeout_milliseconds(),
368
632
self.disable))
369
self.enabled = True
370
633
# Also start a new checker *right now*.
371
634
self.start_checker()
372
635
373
def disable(self, quiet=True):
374
"""Disable this client."""
375
if not getattr(self, "enabled", False):
376
return False
377
if not quiet:
378
self.send_changedstate()
379
if not quiet:
380
logger.info(u"Disabling client %s", self.name)
381
if getattr(self, u"disable_initiator_tag", False):
382
gobject.source_remove(self.disable_initiator_tag)
383
self.disable_initiator_tag = None
384
if getattr(self, u"checker_initiator_tag", False):
385
gobject.source_remove(self.checker_initiator_tag)
386
self.checker_initiator_tag = None
387
self.stop_checker()
388
if self.disable_hook:
389
self.disable_hook(self)
390
self.enabled = False
391
# Do not run this again if called by a gobject.timeout_add
392
return False
393
394
def __del__(self):
395
self.disable_hook = None
396
self.disable()
397
398
636
def checker_callback(self, pid, condition, command):
399
637
"""The checker has completed, so take appropriate actions."""
400
638
self.checker_callback_tag = None
401
639
self.checker = None
402
640
if os.WIFEXITED(condition):
403
exitstatus = os.WEXITSTATUS(condition)
404
if exitstatus == 0:
405
logger.info(u"Checker for %(name)s succeeded",
641
self.last_checker_status = os.WEXITSTATUS(condition)
642
if self.last_checker_status == 0:
643
logger.info("Checker for %(name)s succeeded",
406
644
vars(self))
407
645
self.checked_ok()
408
646
else:
409
logger.info(u"Checker for %(name)s failed",
647
logger.info("Checker for %(name)s failed",
410
648
vars(self))
411
649
else:
412
logger.warning(u"Checker for %(name)s crashed?",
650
self.last_checker_status = -1
651
logger.warning("Checker for %(name)s crashed?",
413
652
vars(self))
414
653
415
654
def checked_ok(self):
416
"""Bump up the timeout for this client.
417
418
This should only be called when the client has been seen,
419
alive and well.
420
"""
655
"""Assert that the client has been seen, alive and well."""
421
656
self.last_checked_ok = datetime.datetime.utcnow()
422
gobject.source_remove(self.disable_initiator_tag)
423
self.disable_initiator_tag = (gobject.timeout_add
424
(self.timeout_milliseconds(),
425
self.disable))
657
self.last_checker_status = 0
658
self.bump_timeout()
659
660
def bump_timeout(self, timeout=None):
661
"""Bump up the timeout for this client."""
662
if timeout is None:
663
timeout = self.timeout
664
if self.disable_initiator_tag is not None:
665
gobject.source_remove(self.disable_initiator_tag)
666
self.disable_initiator_tag = None
667
if getattr(self, "enabled", False):
668
self.disable_initiator_tag = (gobject.timeout_add
669
(timedelta_to_milliseconds
670
(timeout), self.disable))
671
self.expires = datetime.datetime.utcnow() + timeout
426
672
427
673
def need_approval(self):
428
674
self.last_approval_request = datetime.datetime.utcnow()
433
679
If a checker already exists, leave it running and do
434
680
nothing."""
435
681
# The reason for not killing a running checker is that if we
436
# did that, then if a checker (for some reason) started
437
# running slowly and taking more than 'interval' time, the
438
# client would inevitably timeout, since no checker would get
439
# a chance to run to completion. If we instead leave running
682
# did that, and if a checker (for some reason) started running
683
# slowly and taking more than 'interval' time, then the client
684
# would inevitably timeout, since no checker would get a
685
# chance to run to completion. If we instead leave running
440
686
# checkers alone, the checker would have to take more time
441
687
# than 'timeout' for the client to be disabled, which is as it
442
688
# should be.
444
690
# If a checker exists, make sure it is not a zombie
445
691
try:
446
692
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
447
except (AttributeError, OSError), error:
693
except (AttributeError, OSError) as error:
448
694
if (isinstance(error, OSError)
449
695
and error.errno != errno.ECHILD):
450
696
raise error
451
697
else:
452
698
if pid:
453
logger.warning(u"Checker was a zombie")
699
logger.warning("Checker was a zombie")
454
700
gobject.source_remove(self.checker_callback_tag)
455
701
self.checker_callback(pid, status,
456
702
self.current_checker_command)
457
703
# Start a new checker if needed
458
704
if self.checker is None:
705
# Escape attributes for the shell
706
escaped_attrs = dict(
707
(attr, re.escape(unicode(getattr(self, attr))))
708
for attr in
709
self.runtime_expansions)
459
710
try:
460
# In case checker_command has exactly one % operator
461
command = self.checker_command % self.host
462
except TypeError:
463
# Escape attributes for the shell
464
escaped_attrs = dict(
465
(attr,
466
re.escape(unicode(str(getattr(self, attr, u"")),
467
errors=
468
u'replace')))
469
for attr in
470
self.runtime_expansions)
471
472
try:
473
command = self.checker_command % escaped_attrs
474
except TypeError, error:
475
logger.error(u'Could not format string "%s":'
476
u' %s', self.checker_command, error)
477
return True # Try again later
711
command = self.checker_command % escaped_attrs
712
except TypeError as error:
713
logger.error('Could not format string "%s"',
714
self.checker_command, exc_info=error)
715
return True # Try again later
478
716
self.current_checker_command = command
479
717
try:
480
logger.info(u"Starting checker %r for %s",
718
logger.info("Starting checker %r for %s",
481
719
command, self.name)
482
720
# We don't need to redirect stdout and stderr, since
483
721
# in normal mode, that is already done by daemon(),
484
722
# and in debug mode we don't want to. (Stdin is
485
723
# always replaced by /dev/null.)
724
# The exception is when not debugging but nevertheless
725
# running in the foreground; use the previously
726
# created wnull.
727
popen_args = {}
728
if (not self.server_settings["debug"]
729
and self.server_settings["foreground"]):
730
popen_args.update({"stdout": wnull,
731
"stderr": wnull })
486
732
self.checker = subprocess.Popen(command,
487
733
close_fds=True,
488
shell=True, cwd=u"/")
489
self.checker_callback_tag = (gobject.child_watch_add
490
(self.checker.pid,
491
self.checker_callback,
492
data=command))
493
# The checker may have completed before the gobject
494
# watch was added. Check for this.
734
shell=True, cwd="/",
735
**popen_args)
736
except OSError as error:
737
logger.error("Failed to start subprocess",
738
exc_info=error)
739
return True
740
self.checker_callback_tag = (gobject.child_watch_add
741
(self.checker.pid,
742
self.checker_callback,
743
data=command))
744
# The checker may have completed before the gobject
745
# watch was added. Check for this.
746
try:
495
747
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
496
if pid:
497
gobject.source_remove(self.checker_callback_tag)
498
self.checker_callback(pid, status, command)
499
except OSError, error:
500
logger.error(u"Failed to start subprocess: %s",
501
error)
748
except OSError as error:
749
if error.errno == errno.ECHILD:
750
# This should never happen
751
logger.error("Child process vanished",
752
exc_info=error)
753
return True
754
raise
755
if pid:
756
gobject.source_remove(self.checker_callback_tag)
757
self.checker_callback(pid, status, command)
502
758
# Re-run this periodically if run by gobject.timeout_add
503
759
return True
504
760
507
763
if self.checker_callback_tag:
508
764
gobject.source_remove(self.checker_callback_tag)
509
765
self.checker_callback_tag = None
510
if getattr(self, u"checker", None) is None:
766
if getattr(self, "checker", None) is None:
511
767
return
512
logger.debug(u"Stopping checker for %(name)s", vars(self))
768
logger.debug("Stopping checker for %(name)s", vars(self))
513
769
try:
514
os.kill(self.checker.pid, signal.SIGTERM)
770
self.checker.terminate()
515
771
#time.sleep(0.5)
516
772
#if self.checker.poll() is None:
517
# os.kill(self.checker.pid, signal.SIGKILL)
518
except OSError, error:
773
# self.checker.kill()
774
except OSError as error:
519
775
if error.errno != errno.ESRCH: # No such process
520
776
raise
521
777
self.checker = None
522
778
523
def dbus_service_property(dbus_interface, signature=u"v",
524
access=u"readwrite", byte_arrays=False):
779
780
def dbus_service_property(dbus_interface, signature="v",
781
access="readwrite", byte_arrays=False):
525
782
"""Decorators for marking methods of a DBusObjectWithProperties to
526
783
become properties on the D-Bus.
527
784
534
791
"""
535
792
# Encoding deeply encoded byte arrays is not supported yet by the
536
793
# "Set" method, so we fail early here:
537
if byte_arrays and signature != u"ay":
538
raise ValueError(u"Byte arrays not supported for non-'ay'"
539
u" signature %r" % signature)
794
if byte_arrays and signature != "ay":
795
raise ValueError("Byte arrays not supported for non-'ay'"
796
" signature {0!r}".format(signature))
540
797
def decorator(func):
541
798
func._dbus_is_property = True
542
799
func._dbus_interface = dbus_interface
543
800
func._dbus_signature = signature
544
801
func._dbus_access = access
545
802
func._dbus_name = func.__name__
546
if func._dbus_name.endswith(u"_dbus_property"):
803
if func._dbus_name.endswith("_dbus_property"):
547
804
func._dbus_name = func._dbus_name[:-14]
548
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
805
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
806
return func
807
return decorator
808
809
810
def dbus_interface_annotations(dbus_interface):
811
"""Decorator for marking functions returning interface annotations
812
813
Usage:
814
815
@dbus_interface_annotations("org.example.Interface")
816
def _foo(self): # Function name does not matter
817
return {"org.freedesktop.DBus.Deprecated": "true",
818
"org.freedesktop.DBus.Property.EmitsChangedSignal":
819
"false"}
820
"""
821
def decorator(func):
822
func._dbus_is_interface = True
823
func._dbus_interface = dbus_interface
824
func._dbus_name = dbus_interface
825
return func
826
return decorator
827
828
829
def dbus_annotations(annotations):
830
"""Decorator to annotate D-Bus methods, signals or properties
831
Usage:
832
833
@dbus_service_property("org.example.Interface", signature="b",
834
access="r")
835
@dbus_annotations({{"org.freedesktop.DBus.Deprecated": "true",
836
"org.freedesktop.DBus.Property."
837
"EmitsChangedSignal": "false"})
838
def Property_dbus_property(self):
839
return dbus.Boolean(False)
840
"""
841
def decorator(func):
842
func._dbus_annotations = annotations
549
843
return func
550
844
return decorator
551
845
571
865
572
866
class DBusObjectWithProperties(dbus.service.Object):
573
867
"""A D-Bus object with properties.
574
868
575
869
Classes inheriting from this can use the dbus_service_property
576
870
decorator to expose methods as D-Bus properties. It exposes the
577
871
standard Get(), Set(), and GetAll() methods on the D-Bus.
578
872
"""
579
873
580
874
@staticmethod
581
def _is_dbus_property(obj):
582
return getattr(obj, u"_dbus_is_property", False)
875
def _is_dbus_thing(thing):
876
"""Returns a function testing if an attribute is a D-Bus thing
877
878
If called like _is_dbus_thing("method") it returns a function
879
suitable for use as predicate to inspect.getmembers().
880
"""
881
return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),
882
False)
583
883
584
def _get_all_dbus_properties(self):
884
def _get_all_dbus_things(self, thing):
585
885
"""Returns a generator of (name, attribute) pairs
586
886
"""
587
return ((prop._dbus_name, prop)
588
for name, prop in
589
inspect.getmembers(self, self._is_dbus_property))
887
return ((getattr(athing.__get__(self), "_dbus_name",
888
name),
889
athing.__get__(self))
890
for cls in self.__class__.__mro__
891
for name, athing in
892
inspect.getmembers(cls,
893
self._is_dbus_thing(thing)))
590
894
591
895
def _get_dbus_property(self, interface_name, property_name):
592
896
"""Returns a bound method if one exists which is a D-Bus
593
897
property with the specified name and interface.
594
898
"""
595
for name in (property_name,
596
property_name + u"_dbus_property"):
597
prop = getattr(self, name, None)
598
if (prop is None
599
or not self._is_dbus_property(prop)
600
or prop._dbus_name != property_name
601
or (interface_name and prop._dbus_interface
602
and interface_name != prop._dbus_interface)):
603
continue
604
return prop
899
for cls in self.__class__.__mro__:
900
for name, value in (inspect.getmembers
901
(cls,
902
self._is_dbus_thing("property"))):
903
if (value._dbus_name == property_name
904
and value._dbus_interface == interface_name):
905
return value.__get__(self)
906
605
907
# No such property
606
raise DBusPropertyNotFound(self.dbus_object_path + u":"
607
+ interface_name + u"."
908
raise DBusPropertyNotFound(self.dbus_object_path + ":"
909
+ interface_name + "."
608
910
+ property_name)
609
911
610
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
611
out_signature=u"v")
912
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
913
out_signature="v")
612
914
def Get(self, interface_name, property_name):
613
915
"""Standard D-Bus property Get() method, see D-Bus standard.
614
916
"""
615
917
prop = self._get_dbus_property(interface_name, property_name)
616
if prop._dbus_access == u"write":
918
if prop._dbus_access == "write":
617
919
raise DBusPropertyAccessException(property_name)
618
920
value = prop()
619
if not hasattr(value, u"variant_level"):
921
if not hasattr(value, "variant_level"):
620
922
return value
621
923
return type(value)(value, variant_level=value.variant_level+1)
622
924
623
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
925
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
624
926
def Set(self, interface_name, property_name, value):
625
927
"""Standard D-Bus property Set() method, see D-Bus standard.
626
928
"""
627
929
prop = self._get_dbus_property(interface_name, property_name)
628
if prop._dbus_access == u"read":
930
if prop._dbus_access == "read":
629
931
raise DBusPropertyAccessException(property_name)
630
if prop._dbus_get_args_options[u"byte_arrays"]:
932
if prop._dbus_get_args_options["byte_arrays"]:
631
933
# The byte_arrays option is not supported yet on
632
934
# signatures other than "ay".
633
if prop._dbus_signature != u"ay":
935
if prop._dbus_signature != "ay":
634
936
raise ValueError
635
value = dbus.ByteArray(''.join(unichr(byte)
636
for byte in value))
937
value = dbus.ByteArray(b''.join(chr(byte)
938
for byte in value))
637
939
prop(value)
638
940
639
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
640
out_signature=u"a{sv}")
941
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
942
out_signature="a{sv}")
641
943
def GetAll(self, interface_name):
642
944
"""Standard D-Bus property GetAll() method, see D-Bus
643
945
standard.
644
946
645
947
Note: Will not include properties with access="write".
646
948
"""
647
all = {}
648
for name, prop in self._get_all_dbus_properties():
949
properties = {}
950
for name, prop in self._get_all_dbus_things("property"):
649
951
if (interface_name
650
952
and interface_name != prop._dbus_interface):
651
953
# Interface non-empty but did not match
652
954
continue
653
955
# Ignore write-only properties
654
if prop._dbus_access == u"write":
956
if prop._dbus_access == "write":
655
957
continue
656
958
value = prop()
657
if not hasattr(value, u"variant_level"):
658
all[name] = value
959
if not hasattr(value, "variant_level"):
960
properties[name] = value
659
961
continue
660
all[name] = type(value)(value, variant_level=
661
value.variant_level+1)
662
return dbus.Dictionary(all, signature=u"sv")
962
properties[name] = type(value)(value, variant_level=
963
value.variant_level+1)
964
return dbus.Dictionary(properties, signature="sv")
663
965
664
966
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
665
out_signature=u"s",
967
out_signature="s",
666
968
path_keyword='object_path',
667
969
connection_keyword='connection')
668
970
def Introspect(self, object_path, connection):
669
"""Standard D-Bus method, overloaded to insert property tags.
971
"""Overloading of standard D-Bus method.
972
973
Inserts property tags and interface annotation tags.
670
974
"""
671
975
xmlstring = dbus.service.Object.Introspect(self, object_path,
672
976
connection)
673
977
try:
674
978
document = xml.dom.minidom.parseString(xmlstring)
675
979
def make_tag(document, name, prop):
676
e = document.createElement(u"property")
677
e.setAttribute(u"name", name)
678
e.setAttribute(u"type", prop._dbus_signature)
679
e.setAttribute(u"access", prop._dbus_access)
980
e = document.createElement("property")
981
e.setAttribute("name", name)
982
e.setAttribute("type", prop._dbus_signature)
983
e.setAttribute("access", prop._dbus_access)
680
984
return e
681
for if_tag in document.getElementsByTagName(u"interface"):
985
for if_tag in document.getElementsByTagName("interface"):
986
# Add property tags
682
987
for tag in (make_tag(document, name, prop)
683
988
for name, prop
684
in self._get_all_dbus_properties()
989
in self._get_all_dbus_things("property")
685
990
if prop._dbus_interface
686
== if_tag.getAttribute(u"name")):
991
== if_tag.getAttribute("name")):
687
992
if_tag.appendChild(tag)
993
# Add annotation tags
994
for typ in ("method", "signal", "property"):
995
for tag in if_tag.getElementsByTagName(typ):
996
annots = dict()
997
for name, prop in (self.
998
_get_all_dbus_things(typ)):
999
if (name == tag.getAttribute("name")
1000
and prop._dbus_interface
1001
== if_tag.getAttribute("name")):
1002
annots.update(getattr
1003
(prop,
1004
"_dbus_annotations",
1005
{}))
1006
for name, value in annots.iteritems():
1007
ann_tag = document.createElement(
1008
"annotation")
1009
ann_tag.setAttribute("name", name)
1010
ann_tag.setAttribute("value", value)
1011
tag.appendChild(ann_tag)
1012
# Add interface annotation tags
1013
for annotation, value in dict(
1014
itertools.chain.from_iterable(
1015
annotations().iteritems()
1016
for name, annotations in
1017
self._get_all_dbus_things("interface")
1018
if name == if_tag.getAttribute("name")
1019
)).iteritems():
1020
ann_tag = document.createElement("annotation")
1021
ann_tag.setAttribute("name", annotation)
1022
ann_tag.setAttribute("value", value)
1023
if_tag.appendChild(ann_tag)
688
1024
# Add the names to the return values for the
689
1025
# "org.freedesktop.DBus.Properties" methods
690
if (if_tag.getAttribute(u"name")
691
== u"org.freedesktop.DBus.Properties"):
692
for cn in if_tag.getElementsByTagName(u"method"):
693
if cn.getAttribute(u"name") == u"Get":
694
for arg in cn.getElementsByTagName(u"arg"):
695
if (arg.getAttribute(u"direction")
696
== u"out"):
697
arg.setAttribute(u"name", u"value")
698
elif cn.getAttribute(u"name") == u"GetAll":
699
for arg in cn.getElementsByTagName(u"arg"):
700
if (arg.getAttribute(u"direction")
701
== u"out"):
702
arg.setAttribute(u"name", u"props")
703
xmlstring = document.toxml(u"utf-8")
1026
if (if_tag.getAttribute("name")
1027
== "org.freedesktop.DBus.Properties"):
1028
for cn in if_tag.getElementsByTagName("method"):
1029
if cn.getAttribute("name") == "Get":
1030
for arg in cn.getElementsByTagName("arg"):
1031
if (arg.getAttribute("direction")
1032
== "out"):
1033
arg.setAttribute("name", "value")
1034
elif cn.getAttribute("name") == "GetAll":
1035
for arg in cn.getElementsByTagName("arg"):
1036
if (arg.getAttribute("direction")
1037
== "out"):
1038
arg.setAttribute("name", "props")
1039
xmlstring = document.toxml("utf-8")
704
1040
document.unlink()
705
1041
except (AttributeError, xml.dom.DOMException,
706
xml.parsers.expat.ExpatError), error:
707
logger.error(u"Failed to override Introspection method",
708
error)
1042
xml.parsers.expat.ExpatError) as error:
1043
logger.error("Failed to override Introspection method",
1044
exc_info=error)
709
1045
return xmlstring
710
1046
711
1047
1048
def datetime_to_dbus(dt, variant_level=0):
1049
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1050
if dt is None:
1051
return dbus.String("", variant_level = variant_level)
1052
return dbus.String(dt.isoformat(),
1053
variant_level=variant_level)
1054
1055
1056
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1057
"""A class decorator; applied to a subclass of
1058
dbus.service.Object, it will add alternate D-Bus attributes with
1059
interface names according to the "alt_interface_names" mapping.
1060
Usage:
1061
1062
@alternate_dbus_interfaces({"org.example.Interface":
1063
"net.example.AlternateInterface"})
1064
class SampleDBusObject(dbus.service.Object):
1065
@dbus.service.method("org.example.Interface")
1066
def SampleDBusMethod():
1067
pass
1068
1069
The above "SampleDBusMethod" on "SampleDBusObject" will be
1070
reachable via two interfaces: "org.example.Interface" and
1071
"net.example.AlternateInterface", the latter of which will have
1072
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1073
"true", unless "deprecate" is passed with a False value.
1074
1075
This works for methods and signals, and also for D-Bus properties
1076
(from DBusObjectWithProperties) and interfaces (from the
1077
dbus_interface_annotations decorator).
1078
"""
1079
def wrapper(cls):
1080
for orig_interface_name, alt_interface_name in (
1081
alt_interface_names.iteritems()):
1082
attr = {}
1083
interface_names = set()
1084
# Go though all attributes of the class
1085
for attrname, attribute in inspect.getmembers(cls):
1086
# Ignore non-D-Bus attributes, and D-Bus attributes
1087
# with the wrong interface name
1088
if (not hasattr(attribute, "_dbus_interface")
1089
or not attribute._dbus_interface
1090
.startswith(orig_interface_name)):
1091
continue
1092
# Create an alternate D-Bus interface name based on
1093
# the current name
1094
alt_interface = (attribute._dbus_interface
1095
.replace(orig_interface_name,
1096
alt_interface_name))
1097
interface_names.add(alt_interface)
1098
# Is this a D-Bus signal?
1099
if getattr(attribute, "_dbus_is_signal", False):
1100
# Extract the original non-method undecorated
1101
# function by black magic
1102
nonmethod_func = (dict(
1103
zip(attribute.func_code.co_freevars,
1104
attribute.__closure__))["func"]
1105
.cell_contents)
1106
# Create a new, but exactly alike, function
1107
# object, and decorate it to be a new D-Bus signal
1108
# with the alternate D-Bus interface name
1109
new_function = (dbus.service.signal
1110
(alt_interface,
1111
attribute._dbus_signature)
1112
(types.FunctionType(
1113
nonmethod_func.func_code,
1114
nonmethod_func.func_globals,
1115
nonmethod_func.func_name,
1116
nonmethod_func.func_defaults,
1117
nonmethod_func.func_closure)))
1118
# Copy annotations, if any
1119
try:
1120
new_function._dbus_annotations = (
1121
dict(attribute._dbus_annotations))
1122
except AttributeError:
1123
pass
1124
# Define a creator of a function to call both the
1125
# original and alternate functions, so both the
1126
# original and alternate signals gets sent when
1127
# the function is called
1128
def fixscope(func1, func2):
1129
"""This function is a scope container to pass
1130
func1 and func2 to the "call_both" function
1131
outside of its arguments"""
1132
def call_both(*args, **kwargs):
1133
"""This function will emit two D-Bus
1134
signals by calling func1 and func2"""
1135
func1(*args, **kwargs)
1136
func2(*args, **kwargs)
1137
return call_both
1138
# Create the "call_both" function and add it to
1139
# the class
1140
attr[attrname] = fixscope(attribute, new_function)
1141
# Is this a D-Bus method?
1142
elif getattr(attribute, "_dbus_is_method", False):
1143
# Create a new, but exactly alike, function
1144
# object. Decorate it to be a new D-Bus method
1145
# with the alternate D-Bus interface name. Add it
1146
# to the class.
1147
attr[attrname] = (dbus.service.method
1148
(alt_interface,
1149
attribute._dbus_in_signature,
1150
attribute._dbus_out_signature)
1151
(types.FunctionType
1152
(attribute.func_code,
1153
attribute.func_globals,
1154
attribute.func_name,
1155
attribute.func_defaults,
1156
attribute.func_closure)))
1157
# Copy annotations, if any
1158
try:
1159
attr[attrname]._dbus_annotations = (
1160
dict(attribute._dbus_annotations))
1161
except AttributeError:
1162
pass
1163
# Is this a D-Bus property?
1164
elif getattr(attribute, "_dbus_is_property", False):
1165
# Create a new, but exactly alike, function
1166
# object, and decorate it to be a new D-Bus
1167
# property with the alternate D-Bus interface
1168
# name. Add it to the class.
1169
attr[attrname] = (dbus_service_property
1170
(alt_interface,
1171
attribute._dbus_signature,
1172
attribute._dbus_access,
1173
attribute
1174
._dbus_get_args_options
1175
["byte_arrays"])
1176
(types.FunctionType
1177
(attribute.func_code,
1178
attribute.func_globals,
1179
attribute.func_name,
1180
attribute.func_defaults,
1181
attribute.func_closure)))
1182
# Copy annotations, if any
1183
try:
1184
attr[attrname]._dbus_annotations = (
1185
dict(attribute._dbus_annotations))
1186
except AttributeError:
1187
pass
1188
# Is this a D-Bus interface?
1189
elif getattr(attribute, "_dbus_is_interface", False):
1190
# Create a new, but exactly alike, function
1191
# object. Decorate it to be a new D-Bus interface
1192
# with the alternate D-Bus interface name. Add it
1193
# to the class.
1194
attr[attrname] = (dbus_interface_annotations
1195
(alt_interface)
1196
(types.FunctionType
1197
(attribute.func_code,
1198
attribute.func_globals,
1199
attribute.func_name,
1200
attribute.func_defaults,
1201
attribute.func_closure)))
1202
if deprecate:
1203
# Deprecate all alternate interfaces
1204
iname="_AlternateDBusNames_interface_annotation{0}"
1205
for interface_name in interface_names:
1206
@dbus_interface_annotations(interface_name)
1207
def func(self):
1208
return { "org.freedesktop.DBus.Deprecated":
1209
"true" }
1210
# Find an unused name
1211
for aname in (iname.format(i)
1212
for i in itertools.count()):
1213
if aname not in attr:
1214
attr[aname] = func
1215
break
1216
if interface_names:
1217
# Replace the class with a new subclass of it with
1218
# methods, signals, etc. as created above.
1219
cls = type(b"{0}Alternate".format(cls.__name__),
1220
(cls,), attr)
1221
return cls
1222
return wrapper
1223
1224
1225
@alternate_dbus_interfaces({"se.recompile.Mandos":
1226
"se.bsnet.fukt.Mandos"})
712
1227
class ClientDBus(Client, DBusObjectWithProperties):
713
1228
"""A Client class using D-Bus
714
1229
718
1233
"""
719
1234
720
1235
runtime_expansions = (Client.runtime_expansions
721
+ (u"dbus_object_path",))
1236
+ ("dbus_object_path",))
722
1237
723
1238
# dbus.service.Object doesn't use super(), so we can't either.
724
1239
725
1240
def __init__(self, bus = None, *args, **kwargs):
726
self._approvals_pending = 0
727
1241
self.bus = bus
728
1242
Client.__init__(self, *args, **kwargs)
729
1243
# Only now, when this client is initialized, can it show up on
730
1244
# the D-Bus
731
1245
client_object_name = unicode(self.name).translate(
732
{ord(u"."): ord(u"_"),
733
ord(u"-"): ord(u"_")})
1246
{ord("."): ord("_"),
1247
ord("-"): ord("_")})
734
1248
self.dbus_object_path = (dbus.ObjectPath
735
(u"/clients/" + client_object_name))
1249
("/clients/" + client_object_name))
736
1250
DBusObjectWithProperties.__init__(self, self.bus,
737
1251
self.dbus_object_path)
738
739
def _get_approvals_pending(self):
740
return self._approvals_pending
741
def _set_approvals_pending(self, value):
742
old_value = self._approvals_pending
743
self._approvals_pending = value
744
bval = bool(value)
745
if (hasattr(self, "dbus_object_path")
746
and bval is not bool(old_value)):
747
dbus_bool = dbus.Boolean(bval, variant_level=1)
748
self.PropertyChanged(dbus.String(u"ApprovalPending"),
749
dbus_bool)
750
751
approvals_pending = property(_get_approvals_pending,
752
_set_approvals_pending)
753
del _get_approvals_pending, _set_approvals_pending
754
755
@staticmethod
756
def _datetime_to_dbus(dt, variant_level=0):
757
"""Convert a UTC datetime.datetime() to a D-Bus type."""
758
return dbus.String(dt.isoformat(),
759
variant_level=variant_level)
760
761
def enable(self):
762
oldstate = getattr(self, u"enabled", False)
763
r = Client.enable(self)
764
if oldstate != self.enabled:
765
# Emit D-Bus signals
766
self.PropertyChanged(dbus.String(u"Enabled"),
767
dbus.Boolean(True, variant_level=1))
768
self.PropertyChanged(
769
dbus.String(u"LastEnabled"),
770
self._datetime_to_dbus(self.last_enabled,
771
variant_level=1))
772
return r
773
774
def disable(self, quiet = False):
775
oldstate = getattr(self, u"enabled", False)
776
r = Client.disable(self, quiet=quiet)
777
if not quiet and oldstate != self.enabled:
778
# Emit D-Bus signal
779
self.PropertyChanged(dbus.String(u"Enabled"),
780
dbus.Boolean(False, variant_level=1))
781
return r
1252
1253
def notifychangeproperty(transform_func,
1254
dbus_name, type_func=lambda x: x,
1255
variant_level=1):
1256
""" Modify a variable so that it's a property which announces
1257
its changes to DBus.
1258
1259
transform_fun: Function that takes a value and a variant_level
1260
and transforms it to a D-Bus type.
1261
dbus_name: D-Bus name of the variable
1262
type_func: Function that transform the value before sending it
1263
to the D-Bus. Default: no transform
1264
variant_level: D-Bus variant level. Default: 1
1265
"""
1266
attrname = "_{0}".format(dbus_name)
1267
def setter(self, value):
1268
if hasattr(self, "dbus_object_path"):
1269
if (not hasattr(self, attrname) or
1270
type_func(getattr(self, attrname, None))
1271
!= type_func(value)):
1272
dbus_value = transform_func(type_func(value),
1273
variant_level
1274
=variant_level)
1275
self.PropertyChanged(dbus.String(dbus_name),
1276
dbus_value)
1277
setattr(self, attrname, value)
1278
1279
return property(lambda self: getattr(self, attrname), setter)
1280
1281
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1282
approvals_pending = notifychangeproperty(dbus.Boolean,
1283
"ApprovalPending",
1284
type_func = bool)
1285
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1286
last_enabled = notifychangeproperty(datetime_to_dbus,
1287
"LastEnabled")
1288
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1289
type_func = lambda checker:
1290
checker is not None)
1291
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1292
"LastCheckedOK")
1293
last_checker_status = notifychangeproperty(dbus.Int16,
1294
"LastCheckerStatus")
1295
last_approval_request = notifychangeproperty(
1296
datetime_to_dbus, "LastApprovalRequest")
1297
approved_by_default = notifychangeproperty(dbus.Boolean,
1298
"ApprovedByDefault")
1299
approval_delay = notifychangeproperty(dbus.UInt64,
1300
"ApprovalDelay",
1301
type_func =
1302
timedelta_to_milliseconds)
1303
approval_duration = notifychangeproperty(
1304
dbus.UInt64, "ApprovalDuration",
1305
type_func = timedelta_to_milliseconds)
1306
host = notifychangeproperty(dbus.String, "Host")
1307
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1308
type_func =
1309
timedelta_to_milliseconds)
1310
extended_timeout = notifychangeproperty(
1311
dbus.UInt64, "ExtendedTimeout",
1312
type_func = timedelta_to_milliseconds)
1313
interval = notifychangeproperty(dbus.UInt64,
1314
"Interval",
1315
type_func =
1316
timedelta_to_milliseconds)
1317
checker_command = notifychangeproperty(dbus.String, "Checker")
1318
1319
del notifychangeproperty
782
1320
783
1321
def __del__(self, *args, **kwargs):
784
1322
try:
785
1323
self.remove_from_connection()
786
1324
except LookupError:
787
1325
pass
788
if hasattr(DBusObjectWithProperties, u"__del__"):
1326
if hasattr(DBusObjectWithProperties, "__del__"):
789
1327
DBusObjectWithProperties.__del__(self, *args, **kwargs)
790
1328
Client.__del__(self, *args, **kwargs)
791
1329
793
1331
*args, **kwargs):
794
1332
self.checker_callback_tag = None
795
1333
self.checker = None
796
# Emit D-Bus signal
797
self.PropertyChanged(dbus.String(u"CheckerRunning"),
798
dbus.Boolean(False, variant_level=1))
799
1334
if os.WIFEXITED(condition):
800
1335
exitstatus = os.WEXITSTATUS(condition)
801
1336
# Emit D-Bus signal
811
1346
return Client.checker_callback(self, pid, condition, command,
812
1347
*args, **kwargs)
813
1348
814
def checked_ok(self, *args, **kwargs):
815
r = Client.checked_ok(self, *args, **kwargs)
816
# Emit D-Bus signal
817
self.PropertyChanged(
818
dbus.String(u"LastCheckedOK"),
819
(self._datetime_to_dbus(self.last_checked_ok,
820
variant_level=1)))
821
return r
822
823
def need_approval(self, *args, **kwargs):
824
r = Client.need_approval(self, *args, **kwargs)
825
# Emit D-Bus signal
826
self.PropertyChanged(
827
dbus.String(u"LastApprovalRequest"),
828
(self._datetime_to_dbus(self.last_approval_request,
829
variant_level=1)))
830
return r
831
832
1349
def start_checker(self, *args, **kwargs):
833
1350
old_checker = self.checker
834
1351
if self.checker is not None:
841
1358
and old_checker_pid != self.checker.pid):
842
1359
# Emit D-Bus signal
843
1360
self.CheckerStarted(self.current_checker_command)
844
self.PropertyChanged(
845
dbus.String(u"CheckerRunning"),
846
dbus.Boolean(True, variant_level=1))
847
1361
return r
848
1362
849
def stop_checker(self, *args, **kwargs):
850
old_checker = getattr(self, u"checker", None)
851
r = Client.stop_checker(self, *args, **kwargs)
852
if (old_checker is not None
853
and getattr(self, u"checker", None) is None):
854
self.PropertyChanged(dbus.String(u"CheckerRunning"),
855
dbus.Boolean(False, variant_level=1))
856
return r
857
858
1363
def _reset_approved(self):
859
self._approved = None
1364
self.approved = None
860
1365
return False
861
1366
862
1367
def approve(self, value=True):
863
self.send_changedstate()
864
self._approved = value
865
gobject.timeout_add(self._timedelta_to_milliseconds
1368
self.approved = value
1369
gobject.timeout_add(timedelta_to_milliseconds
866
1370
(self.approval_duration),
867
1371
self._reset_approved)
868
1372
self.send_changedstate()
869
1373
870
1374
## D-Bus methods, signals & properties
871
_interface = u"se.bsnet.fukt.Mandos.Client"
1375
_interface = "se.recompile.Mandos.Client"
1376
1377
## Interfaces
1378
1379
@dbus_interface_annotations(_interface)
1380
def _foo(self):
1381
return { "org.freedesktop.DBus.Property.EmitsChangedSignal":
1382
"false"}
872
1383
873
1384
## Signals
874
1385
875
1386
# CheckerCompleted - signal
876
@dbus.service.signal(_interface, signature=u"nxs")
1387
@dbus.service.signal(_interface, signature="nxs")
877
1388
def CheckerCompleted(self, exitcode, waitstatus, command):
878
1389
"D-Bus signal"
879
1390
pass
880
1391
881
1392
# CheckerStarted - signal
882
@dbus.service.signal(_interface, signature=u"s")
1393
@dbus.service.signal(_interface, signature="s")
883
1394
def CheckerStarted(self, command):
884
1395
"D-Bus signal"
885
1396
pass
886
1397
887
1398
# PropertyChanged - signal
888
@dbus.service.signal(_interface, signature=u"sv")
1399
@dbus.service.signal(_interface, signature="sv")
889
1400
def PropertyChanged(self, property, value):
890
1401
"D-Bus signal"
891
1402
pass
900
1411
pass
901
1412
902
1413
# Rejected - signal
903
@dbus.service.signal(_interface, signature=u"s")
1414
@dbus.service.signal(_interface, signature="s")
904
1415
def Rejected(self, reason):
905
1416
"D-Bus signal"
906
1417
pass
907
1418
908
1419
# NeedApproval - signal
909
@dbus.service.signal(_interface, signature=u"tb")
1420
@dbus.service.signal(_interface, signature="tb")
910
1421
def NeedApproval(self, timeout, default):
911
1422
"D-Bus signal"
912
1423
return self.need_approval()
914
1425
## Methods
915
1426
916
1427
# Approve - method
917
@dbus.service.method(_interface, in_signature=u"b")
1428
@dbus.service.method(_interface, in_signature="b")
918
1429
def Approve(self, value):
919
1430
self.approve(value)
920
1431
921
1432
# CheckedOK - method
922
1433
@dbus.service.method(_interface)
923
1434
def CheckedOK(self):
924
return self.checked_ok()
1435
self.checked_ok()
925
1436
926
1437
# Enable - method
927
1438
@dbus.service.method(_interface)
949
1460
## Properties
950
1461
951
1462
# ApprovalPending - property
952
@dbus_service_property(_interface, signature=u"b", access=u"read")
1463
@dbus_service_property(_interface, signature="b", access="read")
953
1464
def ApprovalPending_dbus_property(self):
954
1465
return dbus.Boolean(bool(self.approvals_pending))
955
1466
956
1467
# ApprovedByDefault - property
957
@dbus_service_property(_interface, signature=u"b",
958
access=u"readwrite")
1468
@dbus_service_property(_interface, signature="b",
1469
access="readwrite")
959
1470
def ApprovedByDefault_dbus_property(self, value=None):
960
1471
if value is None: # get
961
1472
return dbus.Boolean(self.approved_by_default)
962
1473
self.approved_by_default = bool(value)
963
# Emit D-Bus signal
964
self.PropertyChanged(dbus.String(u"ApprovedByDefault"),
965
dbus.Boolean(value, variant_level=1))
966
1474
967
1475
# ApprovalDelay - property
968
@dbus_service_property(_interface, signature=u"t",
969
access=u"readwrite")
1476
@dbus_service_property(_interface, signature="t",
1477
access="readwrite")
970
1478
def ApprovalDelay_dbus_property(self, value=None):
971
1479
if value is None: # get
972
1480
return dbus.UInt64(self.approval_delay_milliseconds())
973
1481
self.approval_delay = datetime.timedelta(0, 0, 0, value)
974
# Emit D-Bus signal
975
self.PropertyChanged(dbus.String(u"ApprovalDelay"),
976
dbus.UInt64(value, variant_level=1))
977
1482
978
1483
# ApprovalDuration - property
979
@dbus_service_property(_interface, signature=u"t",
980
access=u"readwrite")
1484
@dbus_service_property(_interface, signature="t",
1485
access="readwrite")
981
1486
def ApprovalDuration_dbus_property(self, value=None):
982
1487
if value is None: # get
983
return dbus.UInt64(self._timedelta_to_milliseconds(
1488
return dbus.UInt64(timedelta_to_milliseconds(
984
1489
self.approval_duration))
985
1490
self.approval_duration = datetime.timedelta(0, 0, 0, value)
986
# Emit D-Bus signal
987
self.PropertyChanged(dbus.String(u"ApprovalDuration"),
988
dbus.UInt64(value, variant_level=1))
989
1491
990
1492
# Name - property
991
@dbus_service_property(_interface, signature=u"s", access=u"read")
1493
@dbus_service_property(_interface, signature="s", access="read")
992
1494
def Name_dbus_property(self):
993
1495
return dbus.String(self.name)
994
1496
995
1497
# Fingerprint - property
996
@dbus_service_property(_interface, signature=u"s", access=u"read")
1498
@dbus_service_property(_interface, signature="s", access="read")
997
1499
def Fingerprint_dbus_property(self):
998
1500
return dbus.String(self.fingerprint)
999
1501
1000
1502
# Host - property
1001
@dbus_service_property(_interface, signature=u"s",
1002
access=u"readwrite")
1503
@dbus_service_property(_interface, signature="s",
1504
access="readwrite")
1003
1505
def Host_dbus_property(self, value=None):
1004
1506
if value is None: # get
1005
1507
return dbus.String(self.host)
1006
self.host = value
1007
# Emit D-Bus signal
1008
self.PropertyChanged(dbus.String(u"Host"),
1009
dbus.String(value, variant_level=1))
1508
self.host = unicode(value)
1010
1509
1011
1510
# Created - property
1012
@dbus_service_property(_interface, signature=u"s", access=u"read")
1511
@dbus_service_property(_interface, signature="s", access="read")
1013
1512
def Created_dbus_property(self):
1014
return dbus.String(self._datetime_to_dbus(self.created))
1513
return datetime_to_dbus(self.created)
1015
1514
1016
1515
# LastEnabled - property
1017
@dbus_service_property(_interface, signature=u"s", access=u"read")
1516
@dbus_service_property(_interface, signature="s", access="read")
1018
1517
def LastEnabled_dbus_property(self):
1019
if self.last_enabled is None:
1020
return dbus.String(u"")
1021
return dbus.String(self._datetime_to_dbus(self.last_enabled))
1518
return datetime_to_dbus(self.last_enabled)
1022
1519
1023
1520
# Enabled - property
1024
@dbus_service_property(_interface, signature=u"b",
1025
access=u"readwrite")
1521
@dbus_service_property(_interface, signature="b",
1522
access="readwrite")
1026
1523
def Enabled_dbus_property(self, value=None):
1027
1524
if value is None: # get
1028
1525
return dbus.Boolean(self.enabled)
1032
1529
self.disable()
1033
1530
1034
1531
# LastCheckedOK - property
1035
@dbus_service_property(_interface, signature=u"s",
1036
access=u"readwrite")
1532
@dbus_service_property(_interface, signature="s",
1533
access="readwrite")
1037
1534
def LastCheckedOK_dbus_property(self, value=None):
1038
1535
if value is not None:
1039
1536
self.checked_ok()
1040
1537
return
1041
if self.last_checked_ok is None:
1042
return dbus.String(u"")
1043
return dbus.String(self._datetime_to_dbus(self
1044
.last_checked_ok))
1538
return datetime_to_dbus(self.last_checked_ok)
1539
1540
# LastCheckerStatus - property
1541
@dbus_service_property(_interface, signature="n",
1542
access="read")
1543
def LastCheckerStatus_dbus_property(self):
1544
return dbus.Int16(self.last_checker_status)
1545
1546
# Expires - property
1547
@dbus_service_property(_interface, signature="s", access="read")
1548
def Expires_dbus_property(self):
1549
return datetime_to_dbus(self.expires)
1045
1550
1046
1551
# LastApprovalRequest - property
1047
@dbus_service_property(_interface, signature=u"s", access=u"read")
1552
@dbus_service_property(_interface, signature="s", access="read")
1048
1553
def LastApprovalRequest_dbus_property(self):
1049
if self.last_approval_request is None:
1050
return dbus.String(u"")
1051
return dbus.String(self.
1052
_datetime_to_dbus(self
1053
.last_approval_request))
1554
return datetime_to_dbus(self.last_approval_request)
1054
1555
1055
1556
# Timeout - property
1056
@dbus_service_property(_interface, signature=u"t",
1057
access=u"readwrite")
1557
@dbus_service_property(_interface, signature="t",
1558
access="readwrite")
1058
1559
def Timeout_dbus_property(self, value=None):
1059
1560
if value is None: # get
1060
1561
return dbus.UInt64(self.timeout_milliseconds())
1562
old_timeout = self.timeout
1061
1563
self.timeout = datetime.timedelta(0, 0, 0, value)
1062
# Emit D-Bus signal
1063
self.PropertyChanged(dbus.String(u"Timeout"),
1064
dbus.UInt64(value, variant_level=1))
1065
if getattr(self, u"disable_initiator_tag", None) is None:
1066
return
1067
# Reschedule timeout
1068
gobject.source_remove(self.disable_initiator_tag)
1069
self.disable_initiator_tag = None
1070
time_to_die = (self.
1071
_timedelta_to_milliseconds((self
1072
.last_checked_ok
1073
+ self.timeout)
1074
- datetime.datetime
1075
.utcnow()))
1076
if time_to_die <= 0:
1077
# The timeout has passed
1078
self.disable()
1079
else:
1080
self.disable_initiator_tag = (gobject.timeout_add
1081
(time_to_die, self.disable))
1564
# Reschedule disabling
1565
if self.enabled:
1566
now = datetime.datetime.utcnow()
1567
self.expires += self.timeout - old_timeout
1568
if self.expires <= now:
1569
# The timeout has passed
1570
self.disable()
1571
else:
1572
if (getattr(self, "disable_initiator_tag", None)
1573
is None):
1574
return
1575
gobject.source_remove(self.disable_initiator_tag)
1576
self.disable_initiator_tag = (
1577
gobject.timeout_add(
1578
timedelta_to_milliseconds(self.expires - now),
1579
self.disable))
1580
1581
# ExtendedTimeout - property
1582
@dbus_service_property(_interface, signature="t",
1583
access="readwrite")
1584
def ExtendedTimeout_dbus_property(self, value=None):
1585
if value is None: # get
1586
return dbus.UInt64(self.extended_timeout_milliseconds())
1587
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1082
1588
1083
1589
# Interval - property
1084
@dbus_service_property(_interface, signature=u"t",
1085
access=u"readwrite")
1590
@dbus_service_property(_interface, signature="t",
1591
access="readwrite")
1086
1592
def Interval_dbus_property(self, value=None):
1087
1593
if value is None: # get
1088
1594
return dbus.UInt64(self.interval_milliseconds())
1089
1595
self.interval = datetime.timedelta(0, 0, 0, value)
1090
# Emit D-Bus signal
1091
self.PropertyChanged(dbus.String(u"Interval"),
1092
dbus.UInt64(value, variant_level=1))
1093
if getattr(self, u"checker_initiator_tag", None) is None:
1596
if getattr(self, "checker_initiator_tag", None) is None:
1094
1597
return
1095
# Reschedule checker run
1096
gobject.source_remove(self.checker_initiator_tag)
1097
self.checker_initiator_tag = (gobject.timeout_add
1098
(value, self.start_checker))
1099
self.start_checker() # Start one now, too
1100
1598
if self.enabled:
1599
# Reschedule checker run
1600
gobject.source_remove(self.checker_initiator_tag)
1601
self.checker_initiator_tag = (gobject.timeout_add
1602
(value, self.start_checker))
1603
self.start_checker() # Start one now, too
1604
1101
1605
# Checker - property
1102
@dbus_service_property(_interface, signature=u"s",
1103
access=u"readwrite")
1606
@dbus_service_property(_interface, signature="s",
1607
access="readwrite")
1104
1608
def Checker_dbus_property(self, value=None):
1105
1609
if value is None: # get
1106
1610
return dbus.String(self.checker_command)
1107
self.checker_command = value
1108
# Emit D-Bus signal
1109
self.PropertyChanged(dbus.String(u"Checker"),
1110
dbus.String(self.checker_command,
1111
variant_level=1))
1611
self.checker_command = unicode(value)
1112
1612
1113
1613
# CheckerRunning - property
1114
@dbus_service_property(_interface, signature=u"b",
1115
access=u"readwrite")
1614
@dbus_service_property(_interface, signature="b",
1615
access="readwrite")
1116
1616
def CheckerRunning_dbus_property(self, value=None):
1117
1617
if value is None: # get
1118
1618
return dbus.Boolean(self.checker is not None)
1122
1622
self.stop_checker()
1123
1623
1124
1624
# ObjectPath - property
1125
@dbus_service_property(_interface, signature=u"o", access=u"read")
1625
@dbus_service_property(_interface, signature="o", access="read")
1126
1626
def ObjectPath_dbus_property(self):
1127
1627
return self.dbus_object_path # is already a dbus.ObjectPath
1128
1628
1129
1629
# Secret = property
1130
@dbus_service_property(_interface, signature=u"ay",
1131
access=u"write", byte_arrays=True)
1630
@dbus_service_property(_interface, signature="ay",
1631
access="write", byte_arrays=True)
1132
1632
def Secret_dbus_property(self, value):
1133
1633
self.secret = str(value)
1134
1634
1141
1641
self._pipe.send(('init', fpr, address))
1142
1642
if not self._pipe.recv():
1143
1643
raise KeyError()
1144
1644
1145
1645
def __getattribute__(self, name):
1146
if(name == '_pipe'):
1646
if name == '_pipe':
1147
1647
return super(ProxyClient, self).__getattribute__(name)
1148
1648
self._pipe.send(('getattr', name))
1149
1649
data = self._pipe.recv()
1154
1654
self._pipe.send(('funcall', name, args, kwargs))
1155
1655
return self._pipe.recv()[1]
1156
1656
return func
1157
1657
1158
1658
def __setattr__(self, name, value):
1159
if(name == '_pipe'):
1659
if name == '_pipe':
1160
1660
return super(ProxyClient, self).__setattr__(name, value)
1161
1661
self._pipe.send(('setattr', name, value))
1162
1662
1169
1669
1170
1670
def handle(self):
1171
1671
with contextlib.closing(self.server.child_pipe) as child_pipe:
1172
logger.info(u"TCP connection from: %s",
1672
logger.info("TCP connection from: %s",
1173
1673
unicode(self.client_address))
1174
logger.debug(u"Pipe FD: %d",
1674
logger.debug("Pipe FD: %d",
1175
1675
self.server.child_pipe.fileno())
1176
1676
1177
1677
session = (gnutls.connection
1178
1678
.ClientSession(self.request,
1179
1679
gnutls.connection
1180
1680
.X509Credentials()))
1181
1681
1182
1682
# Note: gnutls.connection.X509Credentials is really a
1183
1683
# generic GnuTLS certificate credentials object so long as
1184
1684
# no X.509 keys are added to it. Therefore, we can use it
1185
1685
# here despite using OpenPGP certificates.
1186
1187
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1188
# u"+AES-256-CBC", u"+SHA1",
1189
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1190
# u"+DHE-DSS"))
1686
1687
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1688
# "+AES-256-CBC", "+SHA1",
1689
# "+COMP-NULL", "+CTYPE-OPENPGP",
1690
# "+DHE-DSS"))
1191
1691
# Use a fallback default, since this MUST be set.
1192
1692
priority = self.server.gnutls_priority
1193
1693
if priority is None:
1194
priority = u"NORMAL"
1694
priority = "NORMAL"
1195
1695
(gnutls.library.functions
1196
1696
.gnutls_priority_set_direct(session._c_object,
1197
1697
priority, None))
1198
1698
1199
1699
# Start communication using the Mandos protocol
1200
1700
# Get protocol number
1201
1701
line = self.request.makefile().readline()
1202
logger.debug(u"Protocol version: %r", line)
1702
logger.debug("Protocol version: %r", line)
1203
1703
try:
1204
1704
if int(line.strip().split()[0]) > 1:
1205
1705
raise RuntimeError
1206
except (ValueError, IndexError, RuntimeError), error:
1207
logger.error(u"Unknown protocol version: %s", error)
1706
except (ValueError, IndexError, RuntimeError) as error:
1707
logger.error("Unknown protocol version: %s", error)
1208
1708
return
1209
1709
1210
1710
# Start GnuTLS connection
1211
1711
try:
1212
1712
session.handshake()
1213
except gnutls.errors.GNUTLSError, error:
1214
logger.warning(u"Handshake failed: %s", error)
1713
except gnutls.errors.GNUTLSError as error:
1714
logger.warning("Handshake failed: %s", error)
1215
1715
# Do not run session.bye() here: the session is not
1216
1716
# established. Just abandon the request.
1217
1717
return
1218
logger.debug(u"Handshake succeeded")
1219
1718
logger.debug("Handshake succeeded")
1719
1220
1720
approval_required = False
1221
1721
try:
1222
1722
try:
1223
1723
fpr = self.fingerprint(self.peer_certificate
1224
1724
(session))
1225
except (TypeError, gnutls.errors.GNUTLSError), error:
1226
logger.warning(u"Bad certificate: %s", error)
1725
except (TypeError,
1726
gnutls.errors.GNUTLSError) as error:
1727
logger.warning("Bad certificate: %s", error)
1227
1728
return
1228
logger.debug(u"Fingerprint: %s", fpr)
1229
1729
logger.debug("Fingerprint: %s", fpr)
1730
1230
1731
try:
1231
1732
client = ProxyClient(child_pipe, fpr,
1232
1733
self.client_address)
1240
1741
1241
1742
while True:
1242
1743
if not client.enabled:
1243
logger.warning(u"Client %s is disabled",
1744
logger.info("Client %s is disabled",
1244
1745
client.name)
1245
1746
if self.server.use_dbus:
1246
1747
# Emit D-Bus signal
1247
client.Rejected("Disabled")
1748
client.Rejected("Disabled")
1248
1749
return
1249
1750
1250
if client._approved or not client.approval_delay:
1751
if client.approved or not client.approval_delay:
1251
1752
#We are approved or approval is disabled
1252
1753
break
1253
elif client._approved is None:
1254
logger.info(u"Client %s needs approval",
1754
elif client.approved is None:
1755
logger.info("Client %s needs approval",
1255
1756
client.name)
1256
1757
if self.server.use_dbus:
1257
1758
# Emit D-Bus signal
1259
1760
client.approval_delay_milliseconds(),
1260
1761
client.approved_by_default)
1261
1762
else:
1262
logger.warning(u"Client %s was not approved",
1763
logger.warning("Client %s was not approved",
1263
1764
client.name)
1264
1765
if self.server.use_dbus:
1265
1766
# Emit D-Bus signal
1267
1768
return
1268
1769
1269
1770
#wait until timeout or approved
1270
#x = float(client._timedelta_to_milliseconds(delay))
1271
1771
time = datetime.datetime.now()
1272
1772
client.changedstate.acquire()
1273
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
1773
client.changedstate.wait(
1774
float(timedelta_to_milliseconds(delay)
1775
/ 1000))
1274
1776
client.changedstate.release()
1275
1777
time2 = datetime.datetime.now()
1276
1778
if (time2 - time) >= delay:
1291
1793
while sent_size < len(client.secret):
1292
1794
try:
1293
1795
sent = session.send(client.secret[sent_size:])
1294
except (gnutls.errors.GNUTLSError), error:
1295
logger.warning("gnutls send failed")
1796
except gnutls.errors.GNUTLSError as error:
1797
logger.warning("gnutls send failed",
1798
exc_info=error)
1296
1799
return
1297
logger.debug(u"Sent: %d, remaining: %d",
1800
logger.debug("Sent: %d, remaining: %d",
1298
1801
sent, len(client.secret)
1299
1802
- (sent_size + sent))
1300
1803
sent_size += sent
1301
1302
logger.info(u"Sending secret to %s", client.name)
1303
# bump the timeout as if seen
1304
client.checked_ok()
1804
1805
logger.info("Sending secret to %s", client.name)
1806
# bump the timeout using extended_timeout
1807
client.bump_timeout(client.extended_timeout)
1305
1808
if self.server.use_dbus:
1306
1809
# Emit D-Bus signal
1307
1810
client.GotSecret()
1311
1814
client.approvals_pending -= 1
1312
1815
try:
1313
1816
session.bye()
1314
except (gnutls.errors.GNUTLSError), error:
1315
logger.warning("GnuTLS bye failed")
1817
except gnutls.errors.GNUTLSError as error:
1818
logger.warning("GnuTLS bye failed",
1819
exc_info=error)
1316
1820
1317
1821
@staticmethod
1318
1822
def peer_certificate(session):
1328
1832
.gnutls_certificate_get_peers
1329
1833
(session._c_object, ctypes.byref(list_size)))
1330
1834
if not bool(cert_list) and list_size.value != 0:
1331
raise gnutls.errors.GNUTLSError(u"error getting peer"
1332
u" certificate")
1835
raise gnutls.errors.GNUTLSError("error getting peer"
1836
" certificate")
1333
1837
if list_size.value == 0:
1334
1838
return None
1335
1839
cert = cert_list[0]
1361
1865
if crtverify.value != 0:
1362
1866
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1363
1867
raise (gnutls.errors.CertificateSecurityError
1364
(u"Verify failed"))
1868
("Verify failed"))
1365
1869
# New buffer for the fingerprint
1366
1870
buf = ctypes.create_string_buffer(20)
1367
1871
buf_len = ctypes.c_size_t()
1374
1878
# Convert the buffer to a Python bytestring
1375
1879
fpr = ctypes.string_at(buf, buf_len.value)
1376
1880
# Convert the bytestring to hexadecimal notation
1377
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1881
hex_fpr = binascii.hexlify(fpr).upper()
1378
1882
return hex_fpr
1379
1883
1380
1884
1383
1887
def sub_process_main(self, request, address):
1384
1888
try:
1385
1889
self.finish_request(request, address)
1386
except:
1890
except Exception:
1387
1891
self.handle_error(request, address)
1388
1892
self.close_request(request)
1389
1893
1390
1894
def process_request(self, request, address):
1391
1895
"""Start a new process to process the request."""
1392
multiprocessing.Process(target = self.sub_process_main,
1393
args = (request, address)).start()
1896
proc = multiprocessing.Process(target = self.sub_process_main,
1897
args = (request, address))
1898
proc.start()
1899
return proc
1900
1394
1901
1395
1902
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1396
1903
""" adds a pipe to the MixIn """
1400
1907
This function creates a new pipe in self.pipe
1401
1908
"""
1402
1909
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1403
1404
super(MultiprocessingMixInWithPipe,
1405
self).process_request(request, client_address)
1910
1911
proc = MultiprocessingMixIn.process_request(self, request,
1912
client_address)
1406
1913
self.child_pipe.close()
1407
self.add_pipe(parent_pipe)
1408
1409
def add_pipe(self, parent_pipe):
1914
self.add_pipe(parent_pipe, proc)
1915
1916
def add_pipe(self, parent_pipe, proc):
1410
1917
"""Dummy function; override as necessary"""
1411
pass
1918
raise NotImplementedError
1919
1412
1920
1413
1921
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1414
1922
socketserver.TCPServer, object):
1420
1928
use_ipv6: Boolean; to use IPv6 or not
1421
1929
"""
1422
1930
def __init__(self, server_address, RequestHandlerClass,
1423
interface=None, use_ipv6=True):
1931
interface=None, use_ipv6=True, socketfd=None):
1932
"""If socketfd is set, use that file descriptor instead of
1933
creating a new one with socket.socket().
1934
"""
1424
1935
self.interface = interface
1425
1936
if use_ipv6:
1426
1937
self.address_family = socket.AF_INET6
1938
if socketfd is not None:
1939
# Save the file descriptor
1940
self.socketfd = socketfd
1941
# Save the original socket.socket() function
1942
self.socket_socket = socket.socket
1943
# To implement --socket, we monkey patch socket.socket.
1944
#
1945
# (When socketserver.TCPServer is a new-style class, we
1946
# could make self.socket into a property instead of monkey
1947
# patching socket.socket.)
1948
#
1949
# Create a one-time-only replacement for socket.socket()
1950
@functools.wraps(socket.socket)
1951
def socket_wrapper(*args, **kwargs):
1952
# Restore original function so subsequent calls are
1953
# not affected.
1954
socket.socket = self.socket_socket
1955
del self.socket_socket
1956
# This time only, return a new socket object from the
1957
# saved file descriptor.
1958
return socket.fromfd(self.socketfd, *args, **kwargs)
1959
# Replace socket.socket() function with wrapper
1960
socket.socket = socket_wrapper
1961
# The socketserver.TCPServer.__init__ will call
1962
# socket.socket(), which might be our replacement,
1963
# socket_wrapper(), if socketfd was set.
1427
1964
socketserver.TCPServer.__init__(self, server_address,
1428
1965
RequestHandlerClass)
1966
1429
1967
def server_bind(self):
1430
1968
"""This overrides the normal server_bind() function
1431
1969
to bind to an interface if one was specified, and also NOT to
1432
1970
bind to an address or port if they were not specified."""
1433
1971
if self.interface is not None:
1434
1972
if SO_BINDTODEVICE is None:
1435
logger.error(u"SO_BINDTODEVICE does not exist;"
1436
u" cannot bind to interface %s",
1973
logger.error("SO_BINDTODEVICE does not exist;"
1974
" cannot bind to interface %s",
1437
1975
self.interface)
1438
1976
else:
1439
1977
try:
1440
1978
self.socket.setsockopt(socket.SOL_SOCKET,
1441
1979
SO_BINDTODEVICE,
1442
str(self.interface
1443
+ u'\0'))
1444
except socket.error, error:
1445
if error[0] == errno.EPERM:
1446
logger.error(u"No permission to"
1447
u" bind to interface %s",
1448
self.interface)
1449
elif error[0] == errno.ENOPROTOOPT:
1450
logger.error(u"SO_BINDTODEVICE not available;"
1451
u" cannot bind to interface %s",
1452
self.interface)
1980
str(self.interface + '\0'))
1981
except socket.error as error:
1982
if error.errno == errno.EPERM:
1983
logger.error("No permission to bind to"
1984
" interface %s", self.interface)
1985
elif error.errno == errno.ENOPROTOOPT:
1986
logger.error("SO_BINDTODEVICE not available;"
1987
" cannot bind to interface %s",
1988
self.interface)
1989
elif error.errno == errno.ENODEV:
1990
logger.error("Interface %s does not exist,"
1991
" cannot bind", self.interface)
1453
1992
else:
1454
1993
raise
1455
1994
# Only bind(2) the socket if we really need to.
1456
1995
if self.server_address[0] or self.server_address[1]:
1457
1996
if not self.server_address[0]:
1458
1997
if self.address_family == socket.AF_INET6:
1459
any_address = u"::" # in6addr_any
1998
any_address = "::" # in6addr_any
1460
1999
else:
1461
any_address = socket.INADDR_ANY
2000
any_address = "0.0.0.0" # INADDR_ANY
1462
2001
self.server_address = (any_address,
1463
2002
self.server_address[1])
1464
2003
elif not self.server_address[1]:
1485
2024
"""
1486
2025
def __init__(self, server_address, RequestHandlerClass,
1487
2026
interface=None, use_ipv6=True, clients=None,
1488
gnutls_priority=None, use_dbus=True):
2027
gnutls_priority=None, use_dbus=True, socketfd=None):
1489
2028
self.enabled = False
1490
2029
self.clients = clients
1491
2030
if self.clients is None:
1492
self.clients = set()
2031
self.clients = {}
1493
2032
self.use_dbus = use_dbus
1494
2033
self.gnutls_priority = gnutls_priority
1495
2034
IPv6_TCPServer.__init__(self, server_address,
1496
2035
RequestHandlerClass,
1497
2036
interface = interface,
1498
use_ipv6 = use_ipv6)
2037
use_ipv6 = use_ipv6,
2038
socketfd = socketfd)
1499
2039
def server_activate(self):
1500
2040
if self.enabled:
1501
2041
return socketserver.TCPServer.server_activate(self)
2042
1502
2043
def enable(self):
1503
2044
self.enabled = True
1504
def add_pipe(self, parent_pipe):
2045
2046
def add_pipe(self, parent_pipe, proc):
1505
2047
# Call "handle_ipc" for both data and EOF events
1506
2048
gobject.io_add_watch(parent_pipe.fileno(),
1507
2049
gobject.IO_IN | gobject.IO_HUP,
1508
2050
functools.partial(self.handle_ipc,
1509
parent_pipe = parent_pipe))
1510
2051
parent_pipe =
2052
parent_pipe,
2053
proc = proc))
2054
1511
2055
def handle_ipc(self, source, condition, parent_pipe=None,
1512
client_object=None):
1513
condition_names = {
1514
gobject.IO_IN: u"IN", # There is data to read.
1515
gobject.IO_OUT: u"OUT", # Data can be written (without
1516
# blocking).
1517
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1518
gobject.IO_ERR: u"ERR", # Error condition.
1519
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1520
# broken, usually for pipes and
1521
# sockets).
1522
}
1523
conditions_string = ' | '.join(name
1524
for cond, name in
1525
condition_names.iteritems()
1526
if cond & condition)
1527
# error or the other end of multiprocessing.Pipe has closed
1528
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2056
proc = None, client_object=None):
2057
# error, or the other end of multiprocessing.Pipe has closed
2058
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2059
# Wait for other process to exit
2060
proc.join()
1529
2061
return False
1530
2062
1531
2063
# Read a request from the child
1536
2068
fpr = request[1]
1537
2069
address = request[2]
1538
2070
1539
for c in self.clients:
2071
for c in self.clients.itervalues():
1540
2072
if c.fingerprint == fpr:
1541
2073
client = c
1542
2074
break
1543
2075
else:
1544
logger.warning(u"Client not found for fingerprint: %s, ad"
1545
u"dress: %s", fpr, address)
2076
logger.info("Client not found for fingerprint: %s, ad"
2077
"dress: %s", fpr, address)
1546
2078
if self.use_dbus:
1547
2079
# Emit D-Bus signal
1548
mandos_dbus_service.ClientNotFound(fpr, address[0])
2080
mandos_dbus_service.ClientNotFound(fpr,
2081
address[0])
1549
2082
parent_pipe.send(False)
1550
2083
return False
1551
2084
1552
2085
gobject.io_add_watch(parent_pipe.fileno(),
1553
2086
gobject.IO_IN | gobject.IO_HUP,
1554
2087
functools.partial(self.handle_ipc,
1555
parent_pipe = parent_pipe,
1556
client_object = client))
2088
parent_pipe =
2089
parent_pipe,
2090
proc = proc,
2091
client_object =
2092
client))
1557
2093
parent_pipe.send(True)
1558
# remove the old hook in favor of the new above hook on same fileno
2094
# remove the old hook in favor of the new above hook on
2095
# same fileno
1559
2096
return False
1560
2097
if command == 'funcall':
1561
2098
funcname = request[1]
1562
2099
args = request[2]
1563
2100
kwargs = request[3]
1564
2101
1565
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
1566
2102
parent_pipe.send(('data', getattr(client_object,
2103
funcname)(*args,
2104
**kwargs)))
2105
1567
2106
if command == 'getattr':
1568
2107
attrname = request[1]
1569
2108
if callable(client_object.__getattribute__(attrname)):
1570
2109
parent_pipe.send(('function',))
1571
2110
else:
1572
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
2111
parent_pipe.send(('data', client_object
2112
.__getattribute__(attrname)))
1573
2113
1574
2114
if command == 'setattr':
1575
2115
attrname = request[1]
1576
2116
value = request[2]
1577
2117
setattr(client_object, attrname, value)
1578
2118
1579
2119
return True
1580
2120
1581
2121
2122
def rfc3339_duration_to_delta(duration):
2123
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2124
2125
>>> rfc3339_duration_to_delta("P7D")
2126
datetime.timedelta(7)
2127
>>> rfc3339_duration_to_delta("PT60S")
2128
datetime.timedelta(0, 60)
2129
>>> rfc3339_duration_to_delta("PT60M")
2130
datetime.timedelta(0, 3600)
2131
>>> rfc3339_duration_to_delta("PT24H")
2132
datetime.timedelta(1)
2133
>>> rfc3339_duration_to_delta("P1W")
2134
datetime.timedelta(7)
2135
>>> rfc3339_duration_to_delta("PT5M30S")
2136
datetime.timedelta(0, 330)
2137
>>> rfc3339_duration_to_delta("P1DT3M20S")
2138
datetime.timedelta(1, 200)
2139
"""
2140
2141
# Parsing an RFC 3339 duration with regular expressions is not
2142
# possible - there would have to be multiple places for the same
2143
# values, like seconds. The current code, while more esoteric, is
2144
# cleaner without depending on a parsing library. If Python had a
2145
# built-in library for parsing we would use it, but we'd like to
2146
# avoid excessive use of external libraries.
2147
2148
# New type for defining tokens, syntax, and semantics all-in-one
2149
Token = collections.namedtuple("Token",
2150
("regexp", # To match token; if
2151
# "value" is not None,
2152
# must have a "group"
2153
# containing digits
2154
"value", # datetime.timedelta or
2155
# None
2156
"followers")) # Tokens valid after
2157
# this token
2158
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2159
# the "duration" ABNF definition in RFC 3339, Appendix A.
2160
token_end = Token(re.compile(r"$"), None, frozenset())
2161
token_second = Token(re.compile(r"(\d+)S"),
2162
datetime.timedelta(seconds=1),
2163
frozenset((token_end,)))
2164
token_minute = Token(re.compile(r"(\d+)M"),
2165
datetime.timedelta(minutes=1),
2166
frozenset((token_second, token_end)))
2167
token_hour = Token(re.compile(r"(\d+)H"),
2168
datetime.timedelta(hours=1),
2169
frozenset((token_minute, token_end)))
2170
token_time = Token(re.compile(r"T"),
2171
None,
2172
frozenset((token_hour, token_minute,
2173
token_second)))
2174
token_day = Token(re.compile(r"(\d+)D"),
2175
datetime.timedelta(days=1),
2176
frozenset((token_time, token_end)))
2177
token_month = Token(re.compile(r"(\d+)M"),
2178
datetime.timedelta(weeks=4),
2179
frozenset((token_day, token_end)))
2180
token_year = Token(re.compile(r"(\d+)Y"),
2181
datetime.timedelta(weeks=52),
2182
frozenset((token_month, token_end)))
2183
token_week = Token(re.compile(r"(\d+)W"),
2184
datetime.timedelta(weeks=1),
2185
frozenset((token_end,)))
2186
token_duration = Token(re.compile(r"P"), None,
2187
frozenset((token_year, token_month,
2188
token_day, token_time,
2189
token_week))),
2190
# Define starting values
2191
value = datetime.timedelta() # Value so far
2192
found_token = None
2193
followers = frozenset(token_duration,) # Following valid tokens
2194
s = duration # String left to parse
2195
# Loop until end token is found
2196
while found_token is not token_end:
2197
# Search for any currently valid tokens
2198
for token in followers:
2199
match = token.regexp.match(s)
2200
if match is not None:
2201
# Token found
2202
if token.value is not None:
2203
# Value found, parse digits
2204
factor = int(match.group(1), 10)
2205
# Add to value so far
2206
value += factor * token.value
2207
# Strip token from string
2208
s = token.regexp.sub("", s, 1)
2209
# Go to found token
2210
found_token = token
2211
# Set valid next tokens
2212
followers = found_token.followers
2213
break
2214
else:
2215
# No currently valid tokens were found
2216
raise ValueError("Invalid RFC 3339 duration")
2217
# End token found
2218
return value
2219
2220
1582
2221
def string_to_delta(interval):
1583
2222
"""Parse a string and return a datetime.timedelta
1584
2223
1585
>>> string_to_delta(u'7d')
2224
>>> string_to_delta('7d')
1586
2225
datetime.timedelta(7)
1587
>>> string_to_delta(u'60s')
2226
>>> string_to_delta('60s')
1588
2227
datetime.timedelta(0, 60)
1589
>>> string_to_delta(u'60m')
2228
>>> string_to_delta('60m')
1590
2229
datetime.timedelta(0, 3600)
1591
>>> string_to_delta(u'24h')
2230
>>> string_to_delta('24h')
1592
2231
datetime.timedelta(1)
1593
>>> string_to_delta(u'1w')
2232
>>> string_to_delta('1w')
1594
2233
datetime.timedelta(7)
1595
>>> string_to_delta(u'5m 30s')
2234
>>> string_to_delta('5m 30s')
1596
2235
datetime.timedelta(0, 330)
1597
2236
"""
2237
2238
try:
2239
return rfc3339_duration_to_delta(interval)
2240
except ValueError:
2241
pass
2242
1598
2243
timevalue = datetime.timedelta(0)
1599
2244
for s in interval.split():
1600
2245
try:
1601
2246
suffix = unicode(s[-1])
1602
2247
value = int(s[:-1])
1603
if suffix == u"d":
2248
if suffix == "d":
1604
2249
delta = datetime.timedelta(value)
1605
elif suffix == u"s":
2250
elif suffix == "s":
1606
2251
delta = datetime.timedelta(0, value)
1607
elif suffix == u"m":
2252
elif suffix == "m":
1608
2253
delta = datetime.timedelta(0, 0, 0, 0, value)
1609
elif suffix == u"h":
2254
elif suffix == "h":
1610
2255
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1611
elif suffix == u"w":
2256
elif suffix == "w":
1612
2257
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1613
2258
else:
1614
raise ValueError(u"Unknown suffix %r" % suffix)
1615
except (ValueError, IndexError), e:
1616
raise ValueError(e.message)
2259
raise ValueError("Unknown suffix {0!r}"
2260
.format(suffix))
2261
except (ValueError, IndexError) as e:
2262
raise ValueError(*(e.args))
1617
2263
timevalue += delta
1618
2264
return timevalue
1619
2265
1620
2266
1621
def if_nametoindex(interface):
1622
"""Call the C function if_nametoindex(), or equivalent
1623
1624
Note: This function cannot accept a unicode string."""
1625
global if_nametoindex
1626
try:
1627
if_nametoindex = (ctypes.cdll.LoadLibrary
1628
(ctypes.util.find_library(u"c"))
1629
.if_nametoindex)
1630
except (OSError, AttributeError):
1631
logger.warning(u"Doing if_nametoindex the hard way")
1632
def if_nametoindex(interface):
1633
"Get an interface index the hard way, i.e. using fcntl()"
1634
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1635
with contextlib.closing(socket.socket()) as s:
1636
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1637
struct.pack(str(u"16s16x"),
1638
interface))
1639
interface_index = struct.unpack(str(u"I"),
1640
ifreq[16:20])[0]
1641
return interface_index
1642
return if_nametoindex(interface)
1643
1644
1645
2267
def daemon(nochdir = False, noclose = False):
1646
2268
"""See daemon(3). Standard BSD Unix function.
1647
2269
1650
2272
sys.exit()
1651
2273
os.setsid()
1652
2274
if not nochdir:
1653
os.chdir(u"/")
2275
os.chdir("/")
1654
2276
if os.fork():
1655
2277
sys.exit()
1656
2278
if not noclose:
1657
2279
# Close all standard open file descriptors
1658
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2280
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1659
2281
if not stat.S_ISCHR(os.fstat(null).st_mode):
1660
2282
raise OSError(errno.ENODEV,
1661
u"%s not a character device"
1662
% os.path.devnull)
2283
"{0} not a character device"
2284
.format(os.devnull))
1663
2285
os.dup2(null, sys.stdin.fileno())
1664
2286
os.dup2(null, sys.stdout.fileno())
1665
2287
os.dup2(null, sys.stderr.fileno())
1672
2294
##################################################################
1673
2295
# Parsing of options, both command line and config file
1674
2296
1675
parser = optparse.OptionParser(version = "%%prog %s" % version)
1676
parser.add_option("-i", u"--interface", type=u"string",
1677
metavar="IF", help=u"Bind to interface IF")
1678
parser.add_option("-a", u"--address", type=u"string",
1679
help=u"Address to listen for requests on")
1680
parser.add_option("-p", u"--port", type=u"int",
1681
help=u"Port number to receive requests on")
1682
parser.add_option("--check", action=u"store_true",
1683
help=u"Run self-test")
1684
parser.add_option("--debug", action=u"store_true",
1685
help=u"Debug mode; run in foreground and log to"
1686
u" terminal")
1687
parser.add_option("--debuglevel", type=u"string", metavar="LEVEL",
1688
help=u"Debug level for stdout output")
1689
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1690
u" priority string (see GnuTLS documentation)")
1691
parser.add_option("--servicename", type=u"string",
1692
metavar=u"NAME", help=u"Zeroconf service name")
1693
parser.add_option("--configdir", type=u"string",
1694
default=u"/etc/mandos", metavar=u"DIR",
1695
help=u"Directory to search for configuration"
1696
u" files")
1697
parser.add_option("--no-dbus", action=u"store_false",
1698
dest=u"use_dbus", help=u"Do not provide D-Bus"
1699
u" system bus interface")
1700
parser.add_option("--no-ipv6", action=u"store_false",
1701
dest=u"use_ipv6", help=u"Do not use IPv6")
1702
options = parser.parse_args()[0]
2297
parser = argparse.ArgumentParser()
2298
parser.add_argument("-v", "--version", action="version",
2299
version = "%(prog)s {0}".format(version),
2300
help="show version number and exit")
2301
parser.add_argument("-i", "--interface", metavar="IF",
2302
help="Bind to interface IF")
2303
parser.add_argument("-a", "--address",
2304
help="Address to listen for requests on")
2305
parser.add_argument("-p", "--port", type=int,
2306
help="Port number to receive requests on")
2307
parser.add_argument("--check", action="store_true",
2308
help="Run self-test")
2309
parser.add_argument("--debug", action="store_true",
2310
help="Debug mode; run in foreground and log"
2311
" to terminal", default=None)
2312
parser.add_argument("--debuglevel", metavar="LEVEL",
2313
help="Debug level for stdout output")
2314
parser.add_argument("--priority", help="GnuTLS"
2315
" priority string (see GnuTLS documentation)")
2316
parser.add_argument("--servicename",
2317
metavar="NAME", help="Zeroconf service name")
2318
parser.add_argument("--configdir",
2319
default="/etc/mandos", metavar="DIR",
2320
help="Directory to search for configuration"
2321
" files")
2322
parser.add_argument("--no-dbus", action="store_false",
2323
dest="use_dbus", help="Do not provide D-Bus"
2324
" system bus interface", default=None)
2325
parser.add_argument("--no-ipv6", action="store_false",
2326
dest="use_ipv6", help="Do not use IPv6",
2327
default=None)
2328
parser.add_argument("--no-restore", action="store_false",
2329
dest="restore", help="Do not restore stored"
2330
" state", default=None)
2331
parser.add_argument("--socket", type=int,
2332
help="Specify a file descriptor to a network"
2333
" socket to use instead of creating one")
2334
parser.add_argument("--statedir", metavar="DIR",
2335
help="Directory to save/restore state in")
2336
parser.add_argument("--foreground", action="store_true",
2337
help="Run in foreground", default=None)
2338
2339
options = parser.parse_args()
1703
2340
1704
2341
if options.check:
1705
2342
import doctest
1707
2344
sys.exit()
1708
2345
1709
2346
# Default values for config file for server-global settings
1710
server_defaults = { u"interface": u"",
1711
u"address": u"",
1712
u"port": u"",
1713
u"debug": u"False",
1714
u"priority":
1715
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1716
u"servicename": u"Mandos",
1717
u"use_dbus": u"True",
1718
u"use_ipv6": u"True",
1719
u"debuglevel": u"",
2347
server_defaults = { "interface": "",
2348
"address": "",
2349
"port": "",
2350
"debug": "False",
2351
"priority":
2352
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:+SIGN-RSA-SHA224:+SIGN-RSA-RMD160",
2353
"servicename": "Mandos",
2354
"use_dbus": "True",
2355
"use_ipv6": "True",
2356
"debuglevel": "",
2357
"restore": "True",
2358
"socket": "",
2359
"statedir": "/var/lib/mandos",
2360
"foreground": "False",
1720
2361
}
1721
2362
1722
2363
# Parse config file for server-global settings
1723
2364
server_config = configparser.SafeConfigParser(server_defaults)
1724
2365
del server_defaults
1725
2366
server_config.read(os.path.join(options.configdir,
1726
u"mandos.conf"))
2367
"mandos.conf"))
1727
2368
# Convert the SafeConfigParser object to a dict
1728
2369
server_settings = server_config.defaults()
1729
2370
# Use the appropriate methods on the non-string config options
1730
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1731
server_settings[option] = server_config.getboolean(u"DEFAULT",
2371
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
2372
server_settings[option] = server_config.getboolean("DEFAULT",
1732
2373
option)
1733
2374
if server_settings["port"]:
1734
server_settings["port"] = server_config.getint(u"DEFAULT",
1735
u"port")
2375
server_settings["port"] = server_config.getint("DEFAULT",
2376
"port")
2377
if server_settings["socket"]:
2378
server_settings["socket"] = server_config.getint("DEFAULT",
2379
"socket")
2380
# Later, stdin will, and stdout and stderr might, be dup'ed
2381
# over with an opened os.devnull. But we don't want this to
2382
# happen with a supplied network socket.
2383
if 0 <= server_settings["socket"] <= 2:
2384
server_settings["socket"] = os.dup(server_settings
2385
["socket"])
1736
2386
del server_config
1737
2387
1738
2388
# Override the settings from the config file with command line
1739
2389
# options, if set.
1740
for option in (u"interface", u"address", u"port", u"debug",
1741
u"priority", u"servicename", u"configdir",
1742
u"use_dbus", u"use_ipv6", u"debuglevel"):
2390
for option in ("interface", "address", "port", "debug",
2391
"priority", "servicename", "configdir",
2392
"use_dbus", "use_ipv6", "debuglevel", "restore",
2393
"statedir", "socket", "foreground"):
1743
2394
value = getattr(options, option)
1744
2395
if value is not None:
1745
2396
server_settings[option] = value
1748
2399
for option in server_settings.keys():
1749
2400
if type(server_settings[option]) is str:
1750
2401
server_settings[option] = unicode(server_settings[option])
2402
# Force all boolean options to be boolean
2403
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2404
"foreground"):
2405
server_settings[option] = bool(server_settings[option])
2406
# Debug implies foreground
2407
if server_settings["debug"]:
2408
server_settings["foreground"] = True
1751
2409
# Now we have our good server settings in "server_settings"
1752
2410
1753
2411
##################################################################
1754
2412
1755
2413
# For convenience
1756
debug = server_settings[u"debug"]
1757
debuglevel = server_settings[u"debuglevel"]
1758
use_dbus = server_settings[u"use_dbus"]
1759
use_ipv6 = server_settings[u"use_ipv6"]
1760
1761
if server_settings[u"servicename"] != u"Mandos":
2414
debug = server_settings["debug"]
2415
debuglevel = server_settings["debuglevel"]
2416
use_dbus = server_settings["use_dbus"]
2417
use_ipv6 = server_settings["use_ipv6"]
2418
stored_state_path = os.path.join(server_settings["statedir"],
2419
stored_state_file)
2420
foreground = server_settings["foreground"]
2421
2422
if debug:
2423
initlogger(debug, logging.DEBUG)
2424
else:
2425
if not debuglevel:
2426
initlogger(debug)
2427
else:
2428
level = getattr(logging, debuglevel.upper())
2429
initlogger(debug, level)
2430
2431
if server_settings["servicename"] != "Mandos":
1762
2432
syslogger.setFormatter(logging.Formatter
1763
(u'Mandos (%s) [%%(process)d]:'
1764
u' %%(levelname)s: %%(message)s'
1765
% server_settings[u"servicename"]))
2433
('Mandos ({0}) [%(process)d]:'
2434
' %(levelname)s: %(message)s'
2435
.format(server_settings
2436
["servicename"])))
1766
2437
1767
2438
# Parse config file with clients
1768
client_defaults = { u"timeout": u"1h",
1769
u"interval": u"5m",
1770
u"checker": u"fping -q -- %%(host)s",
1771
u"host": u"",
1772
u"approval_delay": u"0s",
1773
u"approval_duration": u"1s",
1774
}
1775
client_config = configparser.SafeConfigParser(client_defaults)
1776
client_config.read(os.path.join(server_settings[u"configdir"],
1777
u"clients.conf"))
2439
client_config = configparser.SafeConfigParser(Client
2440
.client_defaults)
2441
client_config.read(os.path.join(server_settings["configdir"],
2442
"clients.conf"))
1778
2443
1779
2444
global mandos_dbus_service
1780
2445
mandos_dbus_service = None
1781
2446
1782
tcp_server = MandosServer((server_settings[u"address"],
1783
server_settings[u"port"]),
2447
tcp_server = MandosServer((server_settings["address"],
2448
server_settings["port"]),
1784
2449
ClientHandler,
1785
interface=(server_settings[u"interface"]
2450
interface=(server_settings["interface"]
1786
2451
or None),
1787
2452
use_ipv6=use_ipv6,
1788
2453
gnutls_priority=
1789
server_settings[u"priority"],
1790
use_dbus=use_dbus)
1791
if not debug:
1792
pidfilename = u"/var/run/mandos.pid"
2454
server_settings["priority"],
2455
use_dbus=use_dbus,
2456
socketfd=(server_settings["socket"]
2457
or None))
2458
if not foreground:
2459
pidfilename = "/run/mandos.pid"
2460
pidfile = None
1793
2461
try:
1794
pidfile = open(pidfilename, u"w")
1795
except IOError:
1796
logger.error(u"Could not open file %r", pidfilename)
2462
pidfile = open(pidfilename, "w")
2463
except IOError as e:
2464
logger.error("Could not open file %r", pidfilename,
2465
exc_info=e)
1797
2466
1798
try:
1799
uid = pwd.getpwnam(u"_mandos").pw_uid
1800
gid = pwd.getpwnam(u"_mandos").pw_gid
1801
except KeyError:
2467
for name in ("_mandos", "mandos", "nobody"):
1802
2468
try:
1803
uid = pwd.getpwnam(u"mandos").pw_uid
1804
gid = pwd.getpwnam(u"mandos").pw_gid
2469
uid = pwd.getpwnam(name).pw_uid
2470
gid = pwd.getpwnam(name).pw_gid
2471
break
1805
2472
except KeyError:
1806
try:
1807
uid = pwd.getpwnam(u"nobody").pw_uid
1808
gid = pwd.getpwnam(u"nobody").pw_gid
1809
except KeyError:
1810
uid = 65534
1811
gid = 65534
2473
continue
2474
else:
2475
uid = 65534
2476
gid = 65534
1812
2477
try:
1813
2478
os.setgid(gid)
1814
2479
os.setuid(uid)
1815
except OSError, error:
1816
if error[0] != errno.EPERM:
2480
except OSError as error:
2481
if error.errno != errno.EPERM:
1817
2482
raise error
1818
2483
1819
if not debug and not debuglevel:
1820
syslogger.setLevel(logging.WARNING)
1821
console.setLevel(logging.WARNING)
1822
if debuglevel:
1823
level = getattr(logging, debuglevel.upper())
1824
syslogger.setLevel(level)
1825
console.setLevel(level)
1826
1827
2484
if debug:
1828
2485
# Enable all possible GnuTLS debugging
1829
2486
1833
2490
1834
2491
@gnutls.library.types.gnutls_log_func
1835
2492
def debug_gnutls(level, string):
1836
logger.debug(u"GnuTLS: %s", string[:-1])
2493
logger.debug("GnuTLS: %s", string[:-1])
1837
2494
1838
2495
(gnutls.library.functions
1839
2496
.gnutls_global_set_log_function(debug_gnutls))
1840
2497
1841
2498
# Redirect stdin so all checkers get /dev/null
1842
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2499
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1843
2500
os.dup2(null, sys.stdin.fileno())
1844
2501
if null > 2:
1845
2502
os.close(null)
1846
else:
1847
# No console logging
1848
logger.removeHandler(console)
1849
2503
2504
# Need to fork before connecting to D-Bus
2505
if not foreground:
2506
# Close all input and output, do double fork, etc.
2507
daemon()
2508
2509
# multiprocessing will use threads, so before we use gobject we
2510
# need to inform gobject that threads will be used.
2511
gobject.threads_init()
1850
2512
1851
2513
global main_loop
1852
2514
# From the Avahi example code
1853
DBusGMainLoop(set_as_default=True )
2515
DBusGMainLoop(set_as_default=True)
1854
2516
main_loop = gobject.MainLoop()
1855
2517
bus = dbus.SystemBus()
1856
2518
# End of Avahi example code
1857
2519
if use_dbus:
1858
2520
try:
1859
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
2521
bus_name = dbus.service.BusName("se.recompile.Mandos",
1860
2522
bus, do_not_queue=True)
1861
except dbus.exceptions.NameExistsException, e:
1862
logger.error(unicode(e) + u", disabling D-Bus")
2523
old_bus_name = (dbus.service.BusName
2524
("se.bsnet.fukt.Mandos", bus,
2525
do_not_queue=True))
2526
except dbus.exceptions.NameExistsException as e:
2527
logger.error("Disabling D-Bus:", exc_info=e)
1863
2528
use_dbus = False
1864
server_settings[u"use_dbus"] = False
2529
server_settings["use_dbus"] = False
1865
2530
tcp_server.use_dbus = False
1866
2531
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1867
service = AvahiService(name = server_settings[u"servicename"],
1868
servicetype = u"_mandos._tcp",
1869
protocol = protocol, bus = bus)
2532
service = AvahiServiceToSyslog(name =
2533
server_settings["servicename"],
2534
servicetype = "_mandos._tcp",
2535
protocol = protocol, bus = bus)
1870
2536
if server_settings["interface"]:
1871
2537
service.interface = (if_nametoindex
1872
(str(server_settings[u"interface"])))
1873
1874
if not debug:
1875
# Close all input and output, do double fork, etc.
1876
daemon()
1877
2538
(str(server_settings["interface"])))
2539
1878
2540
global multiprocessing_manager
1879
2541
multiprocessing_manager = multiprocessing.Manager()
1880
2542
1881
2543
client_class = Client
1882
2544
if use_dbus:
1883
2545
client_class = functools.partial(ClientDBus, bus = bus)
1884
def client_config_items(config, section):
1885
special_settings = {
1886
"approved_by_default":
1887
lambda: config.getboolean(section,
1888
"approved_by_default"),
1889
}
1890
for name, value in config.items(section):
2546
2547
client_settings = Client.config_parser(client_config)
2548
old_client_settings = {}
2549
clients_data = {}
2550
2551
# This is used to redirect stdout and stderr for checker processes
2552
global wnull
2553
wnull = open(os.devnull, "w") # A writable /dev/null
2554
# Only used if server is running in foreground but not in debug
2555
# mode
2556
if debug or not foreground:
2557
wnull.close()
2558
2559
# Get client data and settings from last running state.
2560
if server_settings["restore"]:
2561
try:
2562
with open(stored_state_path, "rb") as stored_state:
2563
clients_data, old_client_settings = (pickle.load
2564
(stored_state))
2565
os.remove(stored_state_path)
2566
except IOError as e:
2567
if e.errno == errno.ENOENT:
2568
logger.warning("Could not load persistent state: {0}"
2569
.format(os.strerror(e.errno)))
2570
else:
2571
logger.critical("Could not load persistent state:",
2572
exc_info=e)
2573
raise
2574
except EOFError as e:
2575
logger.warning("Could not load persistent state: "
2576
"EOFError:", exc_info=e)
2577
2578
with PGPEngine() as pgp:
2579
for client_name, client in clients_data.iteritems():
2580
# Skip removed clients
2581
if client_name not in client_settings:
2582
continue
2583
2584
# Decide which value to use after restoring saved state.
2585
# We have three different values: Old config file,
2586
# new config file, and saved state.
2587
# New config value takes precedence if it differs from old
2588
# config value, otherwise use saved state.
2589
for name, value in client_settings[client_name].items():
2590
try:
2591
# For each value in new config, check if it
2592
# differs from the old config value (Except for
2593
# the "secret" attribute)
2594
if (name != "secret" and
2595
value != old_client_settings[client_name]
2596
[name]):
2597
client[name] = value
2598
except KeyError:
2599
pass
2600
2601
# Clients who has passed its expire date can still be
2602
# enabled if its last checker was successful. Clients
2603
# whose checker succeeded before we stored its state is
2604
# assumed to have successfully run all checkers during
2605
# downtime.
2606
if client["enabled"]:
2607
if datetime.datetime.utcnow() >= client["expires"]:
2608
if not client["last_checked_ok"]:
2609
logger.warning(
2610
"disabling client {0} - Client never "
2611
"performed a successful checker"
2612
.format(client_name))
2613
client["enabled"] = False
2614
elif client["last_checker_status"] != 0:
2615
logger.warning(
2616
"disabling client {0} - Client "
2617
"last checker failed with error code {1}"
2618
.format(client_name,
2619
client["last_checker_status"]))
2620
client["enabled"] = False
2621
else:
2622
client["expires"] = (datetime.datetime
2623
.utcnow()
2624
+ client["timeout"])
2625
logger.debug("Last checker succeeded,"
2626
" keeping {0} enabled"
2627
.format(client_name))
1891
2628
try:
1892
yield (name, special_settings[name]())
1893
except KeyError:
1894
yield (name, value)
1895
1896
tcp_server.clients.update(set(
1897
client_class(name = section,
1898
config= dict(client_config_items(
1899
client_config, section)))
1900
for section in client_config.sections()))
2629
client["secret"] = (
2630
pgp.decrypt(client["encrypted_secret"],
2631
client_settings[client_name]
2632
["secret"]))
2633
except PGPError:
2634
# If decryption fails, we use secret from new settings
2635
logger.debug("Failed to decrypt {0} old secret"
2636
.format(client_name))
2637
client["secret"] = (
2638
client_settings[client_name]["secret"])
2639
2640
# Add/remove clients based on new changes made to config
2641
for client_name in (set(old_client_settings)
2642
- set(client_settings)):
2643
del clients_data[client_name]
2644
for client_name in (set(client_settings)
2645
- set(old_client_settings)):
2646
clients_data[client_name] = client_settings[client_name]
2647
2648
# Create all client objects
2649
for client_name, client in clients_data.iteritems():
2650
tcp_server.clients[client_name] = client_class(
2651
name = client_name, settings = client,
2652
server_settings = server_settings)
2653
1901
2654
if not tcp_server.clients:
1902
logger.warning(u"No clients defined")
1903
1904
if not debug:
1905
try:
1906
with pidfile:
1907
pid = os.getpid()
1908
pidfile.write(str(pid) + "\n")
1909
del pidfile
1910
except IOError:
1911
logger.error(u"Could not write to file %r with PID %d",
1912
pidfilename, pid)
1913
except NameError:
1914
# "pidfile" was never created
1915
pass
2655
logger.warning("No clients defined")
2656
2657
if not foreground:
2658
if pidfile is not None:
2659
try:
2660
with pidfile:
2661
pid = os.getpid()
2662
pidfile.write(str(pid) + "\n".encode("utf-8"))
2663
except IOError:
2664
logger.error("Could not write to file %r with PID %d",
2665
pidfilename, pid)
2666
del pidfile
1916
2667
del pidfilename
1917
1918
signal.signal(signal.SIGINT, signal.SIG_IGN)
1919
2668
1920
2669
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1921
2670
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1922
2671
1923
2672
if use_dbus:
1924
class MandosDBusService(dbus.service.Object):
2673
@alternate_dbus_interfaces({"se.recompile.Mandos":
2674
"se.bsnet.fukt.Mandos"})
2675
class MandosDBusService(DBusObjectWithProperties):
1925
2676
"""A D-Bus proxy object"""
1926
2677
def __init__(self):
1927
dbus.service.Object.__init__(self, bus, u"/")
1928
_interface = u"se.bsnet.fukt.Mandos"
1929
1930
@dbus.service.signal(_interface, signature=u"o")
2678
dbus.service.Object.__init__(self, bus, "/")
2679
_interface = "se.recompile.Mandos"
2680
2681
@dbus_interface_annotations(_interface)
2682
def _foo(self):
2683
return { "org.freedesktop.DBus.Property"
2684
".EmitsChangedSignal":
2685
"false"}
2686
2687
@dbus.service.signal(_interface, signature="o")
1931
2688
def ClientAdded(self, objpath):
1932
2689
"D-Bus signal"
1933
2690
pass
1934
2691
1935
@dbus.service.signal(_interface, signature=u"ss")
2692
@dbus.service.signal(_interface, signature="ss")
1936
2693
def ClientNotFound(self, fingerprint, address):
1937
2694
"D-Bus signal"
1938
2695
pass
1939
2696
1940
@dbus.service.signal(_interface, signature=u"os")
2697
@dbus.service.signal(_interface, signature="os")
1941
2698
def ClientRemoved(self, objpath, name):
1942
2699
"D-Bus signal"
1943
2700
pass
1944
2701
1945
@dbus.service.method(_interface, out_signature=u"ao")
2702
@dbus.service.method(_interface, out_signature="ao")
1946
2703
def GetAllClients(self):
1947
2704
"D-Bus method"
1948
2705
return dbus.Array(c.dbus_object_path
1949
for c in tcp_server.clients)
2706
for c in
2707
tcp_server.clients.itervalues())
1950
2708
1951
2709
@dbus.service.method(_interface,
1952
out_signature=u"a{oa{sv}}")
2710
out_signature="a{oa{sv}}")
1953
2711
def GetAllClientsWithProperties(self):
1954
2712
"D-Bus method"
1955
2713
return dbus.Dictionary(
1956
((c.dbus_object_path, c.GetAll(u""))
1957
for c in tcp_server.clients),
1958
signature=u"oa{sv}")
2714
((c.dbus_object_path, c.GetAll(""))
2715
for c in tcp_server.clients.itervalues()),
2716
signature="oa{sv}")
1959
2717
1960
@dbus.service.method(_interface, in_signature=u"o")
2718
@dbus.service.method(_interface, in_signature="o")
1961
2719
def RemoveClient(self, object_path):
1962
2720
"D-Bus method"
1963
for c in tcp_server.clients:
2721
for c in tcp_server.clients.itervalues():
1964
2722
if c.dbus_object_path == object_path:
1965
tcp_server.clients.remove(c)
2723
del tcp_server.clients[c.name]
1966
2724
c.remove_from_connection()
1967
2725
# Don't signal anything except ClientRemoved
1968
2726
c.disable(quiet=True)
1979
2737
"Cleanup function; run on exit"
1980
2738
service.cleanup()
1981
2739
2740
multiprocessing.active_children()
2741
wnull.close()
2742
if not (tcp_server.clients or client_settings):
2743
return
2744
2745
# Store client before exiting. Secrets are encrypted with key
2746
# based on what config file has. If config file is
2747
# removed/edited, old secret will thus be unrecovable.
2748
clients = {}
2749
with PGPEngine() as pgp:
2750
for client in tcp_server.clients.itervalues():
2751
key = client_settings[client.name]["secret"]
2752
client.encrypted_secret = pgp.encrypt(client.secret,
2753
key)
2754
client_dict = {}
2755
2756
# A list of attributes that can not be pickled
2757
# + secret.
2758
exclude = set(("bus", "changedstate", "secret",
2759
"checker", "server_settings"))
2760
for name, typ in (inspect.getmembers
2761
(dbus.service.Object)):
2762
exclude.add(name)
2763
2764
client_dict["encrypted_secret"] = (client
2765
.encrypted_secret)
2766
for attr in client.client_structure:
2767
if attr not in exclude:
2768
client_dict[attr] = getattr(client, attr)
2769
2770
clients[client.name] = client_dict
2771
del client_settings[client.name]["secret"]
2772
2773
try:
2774
with (tempfile.NamedTemporaryFile
2775
(mode='wb', suffix=".pickle", prefix='clients-',
2776
dir=os.path.dirname(stored_state_path),
2777
delete=False)) as stored_state:
2778
pickle.dump((clients, client_settings), stored_state)
2779
tempname=stored_state.name
2780
os.rename(tempname, stored_state_path)
2781
except (IOError, OSError) as e:
2782
if not debug:
2783
try:
2784
os.remove(tempname)
2785
except NameError:
2786
pass
2787
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
2788
logger.warning("Could not save persistent state: {0}"
2789
.format(os.strerror(e.errno)))
2790
else:
2791
logger.warning("Could not save persistent state:",
2792
exc_info=e)
2793
raise e
2794
2795
# Delete all clients, and settings from config
1982
2796
while tcp_server.clients:
1983
client = tcp_server.clients.pop()
2797
name, client = tcp_server.clients.popitem()
1984
2798
if use_dbus:
1985
2799
client.remove_from_connection()
1986
client.disable_hook = None
1987
2800
# Don't signal anything except ClientRemoved
1988
2801
client.disable(quiet=True)
1989
2802
if use_dbus:
1990
2803
# Emit D-Bus signal
1991
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
2804
mandos_dbus_service.ClientRemoved(client
2805
.dbus_object_path,
1992
2806
client.name)
2807
client_settings.clear()
1993
2808
1994
2809
atexit.register(cleanup)
1995
2810
1996
for client in tcp_server.clients:
2811
for client in tcp_server.clients.itervalues():
1997
2812
if use_dbus:
1998
2813
# Emit D-Bus signal
1999
2814
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2000
client.enable()
2815
# Need to initiate checking of clients
2816
if client.enabled:
2817
client.init_checker()
2001
2818
2002
2819
tcp_server.enable()
2003
2820
tcp_server.server_activate()
2005
2822
# Find out what port we got
2006
2823
service.port = tcp_server.socket.getsockname()[1]
2007
2824
if use_ipv6:
2008
logger.info(u"Now listening on address %r, port %d,"
2009
" flowinfo %d, scope_id %d"
2010
% tcp_server.socket.getsockname())
2825
logger.info("Now listening on address %r, port %d,"
2826
" flowinfo %d, scope_id %d",
2827
*tcp_server.socket.getsockname())
2011
2828
else: # IPv4
2012
logger.info(u"Now listening on address %r, port %d"
2013
% tcp_server.socket.getsockname())
2829
logger.info("Now listening on address %r, port %d",
2830
*tcp_server.socket.getsockname())
2014
2831
2015
2832
#service.interface = tcp_server.socket.getsockname()[3]
2016
2833
2018
2835
# From the Avahi example code
2019
2836
try:
2020
2837
service.activate()
2021
except dbus.exceptions.DBusException, error:
2022
logger.critical(u"DBusException: %s", error)
2838
except dbus.exceptions.DBusException as error:
2839
logger.critical("D-Bus Exception", exc_info=error)
2023
2840
cleanup()
2024
2841
sys.exit(1)
2025
2842
# End of Avahi example code
2029
2846
(tcp_server.handle_request
2030
2847
(*args[2:], **kwargs) or True))
2031
2848
2032
logger.debug(u"Starting main loop")
2849
logger.debug("Starting main loop")
2033
2850
main_loop.run()
2034
except AvahiError, error:
2035
logger.critical(u"AvahiError: %s", error)
2851
except AvahiError as error:
2852
logger.critical("Avahi Error", exc_info=error)
2036
2853
cleanup()
2037
2854
sys.exit(1)
2038
2855
except KeyboardInterrupt:
2039
2856
if debug:
2040
print >> sys.stderr
2041
logger.debug(u"Server received KeyboardInterrupt")
2042
logger.debug(u"Server exiting")
2857
print("", file=sys.stderr)
2858
logger.debug("Server received KeyboardInterrupt")
2859
logger.debug("Server exiting")
2043
2860
# Must run before the D-Bus bus name gets deregistered
2044
2861
cleanup()
2045
2862
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0