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- Committer: Teddy Hogeborn
- Date: 2010-09-05 20:19:02 UTC
- mfrom: (416.1.2 mandos)
- Revision ID: teddy@fukt.bsnet.se-20100905201902-ivwsc01ecaaqlqg4
* mandos (AvahiService.entry_group_state_changed): Better debug log
message.
(AvahiService.server_state_changed): Added debug log message.
* mandos-monitor (isoformat_to_datetime): New function.
(MandosClientWidget): Show a countdown to disabling if last checker
failed.
message.
(AvahiService.server_state_changed): Added debug log message.
* mandos-monitor (isoformat_to_datetime): New function.
(MandosClientWidget): Show a countdown to disabling if last checker
failed.
- files removed:
- DBUS-API
- debian/source
- network-hooks.d
- files modified:
- .bzrignore
added
removed
mandos
11
11
# "AvahiService" class, and some lines in "main".
12
12
#
13
13
# Everything else is
14
# Copyright © 2008-2012 Teddy Hogeborn
15
# Copyright © 2008-2012 Björn Påhlsson
14
# Copyright © 2008,2009 Teddy Hogeborn
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# Copyright © 2008,2009 Björn Påhlsson
16
16
#
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# This program is free software: you can redistribute it and/or modify
18
18
# it under the terms of the GNU General Public License as published by
28
28
# along with this program. If not, see
29
29
# <http://www.gnu.org/licenses/>.
30
30
#
31
# Contact the authors at <mandos@recompile.se>.
31
# Contact the authors at <mandos@fukt.bsnet.se>.
32
32
#
33
33
34
from __future__ import (division, absolute_import, print_function,
35
unicode_literals)
36
37
from future_builtins import *
34
from __future__ import division, with_statement, absolute_import
38
35
39
36
import SocketServer as socketserver
40
37
import socket
41
import argparse
38
import optparse
42
39
import datetime
43
40
import errno
44
41
import gnutls.crypto
63
60
import fcntl
64
61
import functools
65
62
import cPickle as pickle
66
import multiprocessing
67
import types
68
import binascii
69
import tempfile
70
import itertools
63
import select
71
64
72
65
import dbus
73
66
import dbus.service
78
71
import ctypes.util
79
72
import xml.dom.minidom
80
73
import inspect
81
import GnuPGInterface
82
74
83
75
try:
84
76
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
88
80
except ImportError:
89
81
SO_BINDTODEVICE = None
90
82
91
version = "1.5.5"
92
stored_state_file = "clients.pickle"
93
94
logger = logging.getLogger()
83
84
version = "1.0.14"
85
86
logger = logging.Logger(u'mandos')
95
87
syslogger = (logging.handlers.SysLogHandler
96
88
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
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)
132
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.gnupg = GnuPGInterface.GnuPG()
143
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
144
self.gnupg = GnuPGInterface.GnuPG()
145
self.gnupg.options.meta_interactive = False
146
self.gnupg.options.homedir = self.tempdir
147
self.gnupg.options.extra_args.extend(['--force-mdc',
148
'--quiet',
149
'--no-use-agent'])
150
151
def __enter__(self):
152
return self
153
154
def __exit__(self, exc_type, exc_value, traceback):
155
self._cleanup()
156
return False
157
158
def __del__(self):
159
self._cleanup()
160
161
def _cleanup(self):
162
if self.tempdir is not None:
163
# Delete contents of tempdir
164
for root, dirs, files in os.walk(self.tempdir,
165
topdown = False):
166
for filename in files:
167
os.remove(os.path.join(root, filename))
168
for dirname in dirs:
169
os.rmdir(os.path.join(root, dirname))
170
# Remove tempdir
171
os.rmdir(self.tempdir)
172
self.tempdir = None
173
174
def password_encode(self, password):
175
# Passphrase can not be empty and can not contain newlines or
176
# NUL bytes. So we prefix it and hex encode it.
177
return b"mandos" + binascii.hexlify(password)
178
179
def encrypt(self, data, password):
180
self.gnupg.passphrase = self.password_encode(password)
181
with open(os.devnull, "w") as devnull:
182
try:
183
proc = self.gnupg.run(['--symmetric'],
184
create_fhs=['stdin', 'stdout'],
185
attach_fhs={'stderr': devnull})
186
with contextlib.closing(proc.handles['stdin']) as f:
187
f.write(data)
188
with contextlib.closing(proc.handles['stdout']) as f:
189
ciphertext = f.read()
190
proc.wait()
191
except IOError as e:
192
raise PGPError(e)
193
self.gnupg.passphrase = None
194
return ciphertext
195
196
def decrypt(self, data, password):
197
self.gnupg.passphrase = self.password_encode(password)
198
with open(os.devnull, "w") as devnull:
199
try:
200
proc = self.gnupg.run(['--decrypt'],
201
create_fhs=['stdin', 'stdout'],
202
attach_fhs={'stderr': devnull})
203
with contextlib.closing(proc.handles['stdin']) as f:
204
f.write(data)
205
with contextlib.closing(proc.handles['stdout']) as f:
206
decrypted_plaintext = f.read()
207
proc.wait()
208
except IOError as e:
209
raise PGPError(e)
210
self.gnupg.passphrase = None
211
return decrypted_plaintext
212
89
address = "/dev/log"))
90
syslogger.setFormatter(logging.Formatter
91
(u'Mandos [%(process)d]: %(levelname)s:'
92
u' %(message)s'))
93
logger.addHandler(syslogger)
94
95
console = logging.StreamHandler()
96
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
97
u' %(levelname)s:'
98
u' %(message)s'))
99
logger.addHandler(console)
213
100
214
101
class AvahiError(Exception):
215
102
def __init__(self, value, *args, **kwargs):
231
118
Attributes:
232
119
interface: integer; avahi.IF_UNSPEC or an interface index.
233
120
Used to optionally bind to the specified interface.
234
name: string; Example: 'Mandos'
235
type: string; Example: '_mandos._tcp'.
121
name: string; Example: u'Mandos'
122
type: string; Example: u'_mandos._tcp'.
236
123
See <http://www.dns-sd.org/ServiceTypes.html>
237
124
port: integer; what port to announce
238
125
TXT: list of strings; TXT record for the service
245
132
server: D-Bus Server
246
133
bus: dbus.SystemBus()
247
134
"""
248
249
135
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
250
136
servicetype = None, port = None, TXT = None,
251
domain = "", host = "", max_renames = 32768,
137
domain = u"", host = u"", max_renames = 32768,
252
138
protocol = avahi.PROTO_UNSPEC, bus = None):
253
139
self.interface = interface
254
140
self.name = name
263
149
self.group = None # our entry group
264
150
self.server = None
265
151
self.bus = bus
266
self.entry_group_state_changed_match = None
267
268
152
def rename(self):
269
153
"""Derived from the Avahi example code"""
270
154
if self.rename_count >= self.max_renames:
271
logger.critical("No suitable Zeroconf service name found"
272
" after %i retries, exiting.",
155
logger.critical(u"No suitable Zeroconf service name found"
156
u" after %i retries, exiting.",
273
157
self.rename_count)
274
raise AvahiServiceError("Too many renames")
275
self.name = unicode(self.server
276
.GetAlternativeServiceName(self.name))
277
logger.info("Changing Zeroconf service name to %r ...",
278
self.name)
158
raise AvahiServiceError(u"Too many renames")
159
self.name = self.server.GetAlternativeServiceName(self.name)
160
logger.info(u"Changing Zeroconf service name to %r ...",
161
unicode(self.name))
162
syslogger.setFormatter(logging.Formatter
163
(u'Mandos (%s) [%%(process)d]:'
164
u' %%(levelname)s: %%(message)s'
165
% self.name))
279
166
self.remove()
280
try:
281
self.add()
282
except dbus.exceptions.DBusException as error:
283
logger.critical("D-Bus Exception", exc_info=error)
284
self.cleanup()
285
os._exit(1)
167
self.add()
286
168
self.rename_count += 1
287
288
169
def remove(self):
289
170
"""Derived from the Avahi example code"""
290
if self.entry_group_state_changed_match is not None:
291
self.entry_group_state_changed_match.remove()
292
self.entry_group_state_changed_match = None
293
171
if self.group is not None:
294
172
self.group.Reset()
295
296
173
def add(self):
297
174
"""Derived from the Avahi example code"""
298
self.remove()
299
175
if self.group is None:
300
176
self.group = dbus.Interface(
301
177
self.bus.get_object(avahi.DBUS_NAME,
302
178
self.server.EntryGroupNew()),
303
179
avahi.DBUS_INTERFACE_ENTRY_GROUP)
304
self.entry_group_state_changed_match = (
305
self.group.connect_to_signal(
306
'StateChanged', self.entry_group_state_changed))
307
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
180
self.group.connect_to_signal('StateChanged',
181
self
182
.entry_group_state_changed)
183
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
308
184
self.name, self.type)
309
185
self.group.AddService(
310
186
self.interface,
315
191
dbus.UInt16(self.port),
316
192
avahi.string_array_to_txt_array(self.TXT))
317
193
self.group.Commit()
318
319
194
def entry_group_state_changed(self, state, error):
320
195
"""Derived from the Avahi example code"""
321
logger.debug("Avahi entry group state change: %i", state)
196
logger.debug(u"Avahi entry group state change: %i", state)
322
197
323
198
if state == avahi.ENTRY_GROUP_ESTABLISHED:
324
logger.debug("Zeroconf service established.")
199
logger.debug(u"Zeroconf service established.")
325
200
elif state == avahi.ENTRY_GROUP_COLLISION:
326
logger.info("Zeroconf service name collision.")
201
logger.warning(u"Zeroconf service name collision.")
327
202
self.rename()
328
203
elif state == avahi.ENTRY_GROUP_FAILURE:
329
logger.critical("Avahi: Error in group state changed %s",
204
logger.critical(u"Avahi: Error in group state changed %s",
330
205
unicode(error))
331
raise AvahiGroupError("State changed: {0!s}"
332
.format(error))
333
206
raise AvahiGroupError(u"State changed: %s"
207
% unicode(error))
334
208
def cleanup(self):
335
209
"""Derived from the Avahi example code"""
336
210
if self.group is not None:
337
try:
338
self.group.Free()
339
except (dbus.exceptions.UnknownMethodException,
340
dbus.exceptions.DBusException):
341
pass
211
self.group.Free()
342
212
self.group = None
343
self.remove()
344
345
def server_state_changed(self, state, error=None):
213
def server_state_changed(self, state):
346
214
"""Derived from the Avahi example code"""
347
logger.debug("Avahi server state change: %i", state)
348
bad_states = { avahi.SERVER_INVALID:
349
"Zeroconf server invalid",
350
avahi.SERVER_REGISTERING: None,
351
avahi.SERVER_COLLISION:
352
"Zeroconf server name collision",
353
avahi.SERVER_FAILURE:
354
"Zeroconf server failure" }
355
if state in bad_states:
356
if bad_states[state] is not None:
357
if error is None:
358
logger.error(bad_states[state])
359
else:
360
logger.error(bad_states[state] + ": %r", error)
361
self.cleanup()
215
logger.debug(u"Avahi server state change: %i", state)
216
if state == avahi.SERVER_COLLISION:
217
logger.error(u"Zeroconf server name collision")
218
self.remove()
362
219
elif state == avahi.SERVER_RUNNING:
363
220
self.add()
364
else:
365
if error is None:
366
logger.debug("Unknown state: %r", state)
367
else:
368
logger.debug("Unknown state: %r: %r", state, error)
369
370
221
def activate(self):
371
222
"""Derived from the Avahi example code"""
372
223
if self.server is None:
373
224
self.server = dbus.Interface(
374
225
self.bus.get_object(avahi.DBUS_NAME,
375
avahi.DBUS_PATH_SERVER,
376
follow_name_owner_changes=True),
226
avahi.DBUS_PATH_SERVER),
377
227
avahi.DBUS_INTERFACE_SERVER)
378
self.server.connect_to_signal("StateChanged",
228
self.server.connect_to_signal(u"StateChanged",
379
229
self.server_state_changed)
380
230
self.server_state_changed(self.server.GetState())
381
231
382
232
383
class AvahiServiceToSyslog(AvahiService):
384
def rename(self):
385
"""Add the new name to the syslog messages"""
386
ret = AvahiService.rename(self)
387
syslogger.setFormatter(logging.Formatter
388
('Mandos ({0}) [%(process)d]:'
389
' %(levelname)s: %(message)s'
390
.format(self.name)))
391
return ret
392
393
394
def timedelta_to_milliseconds(td):
395
"Convert a datetime.timedelta() to milliseconds"
396
return ((td.days * 24 * 60 * 60 * 1000)
397
+ (td.seconds * 1000)
398
+ (td.microseconds // 1000))
399
400
401
233
class Client(object):
402
234
"""A representation of a client host served by this server.
403
235
404
236
Attributes:
405
approved: bool(); 'None' if not yet approved/disapproved
406
approval_delay: datetime.timedelta(); Time to wait for approval
407
approval_duration: datetime.timedelta(); Duration of one approval
237
name: string; from the config file, used in log messages and
238
D-Bus identifiers
239
fingerprint: string (40 or 32 hexadecimal digits); used to
240
uniquely identify the client
241
secret: bytestring; sent verbatim (over TLS) to client
242
host: string; available for use by the checker command
243
created: datetime.datetime(); (UTC) object creation
244
last_enabled: datetime.datetime(); (UTC)
245
enabled: bool()
246
last_checked_ok: datetime.datetime(); (UTC) or None
247
timeout: datetime.timedelta(); How long from last_checked_ok
248
until this client is disabled
249
interval: datetime.timedelta(); How often to start a new checker
250
disable_hook: If set, called by disable() as disable_hook(self)
408
251
checker: subprocess.Popen(); a running checker process used
409
252
to see if the client lives.
410
253
'None' if no process is running.
411
checker_callback_tag: a gobject event source tag, or None
412
checker_command: string; External command which is run to check
413
if client lives. %() expansions are done at
254
checker_initiator_tag: a gobject event source tag, or None
255
disable_initiator_tag: - '' -
256
checker_callback_tag: - '' -
257
checker_command: string; External command which is run to check if
258
client lives. %() expansions are done at
414
259
runtime with vars(self) as dict, so that for
415
260
instance %(name)s can be used in the command.
416
checker_initiator_tag: a gobject event source tag, or None
417
created: datetime.datetime(); (UTC) object creation
418
client_structure: Object describing what attributes a client has
419
and is used for storing the client at exit
420
261
current_checker_command: string; current running checker_command
421
disable_initiator_tag: a gobject event source tag, or None
422
enabled: bool()
423
fingerprint: string (40 or 32 hexadecimal digits); used to
424
uniquely identify the client
425
host: string; available for use by the checker command
426
interval: datetime.timedelta(); How often to start a new checker
427
last_approval_request: datetime.datetime(); (UTC) or None
428
last_checked_ok: datetime.datetime(); (UTC) or None
429
last_checker_status: integer between 0 and 255 reflecting exit
430
status of last checker. -1 reflects crashed
431
checker, -2 means no checker completed yet.
432
last_enabled: datetime.datetime(); (UTC) or None
433
name: string; from the config file, used in log messages and
434
D-Bus identifiers
435
secret: bytestring; sent verbatim (over TLS) to client
436
timeout: datetime.timedelta(); How long from last_checked_ok
437
until this client is disabled
438
extended_timeout: extra long timeout when secret has been sent
439
runtime_expansions: Allowed attributes for runtime expansion.
440
expires: datetime.datetime(); time (UTC) when a client will be
441
disabled, or None
442
262
"""
443
263
444
runtime_expansions = ("approval_delay", "approval_duration",
445
"created", "enabled", "expires",
446
"fingerprint", "host", "interval",
447
"last_approval_request", "last_checked_ok",
448
"last_enabled", "name", "timeout")
449
client_defaults = { "timeout": "5m",
450
"extended_timeout": "15m",
451
"interval": "2m",
452
"checker": "fping -q -- %%(host)s",
453
"host": "",
454
"approval_delay": "0s",
455
"approval_duration": "1s",
456
"approved_by_default": "True",
457
"enabled": "True",
458
}
264
@staticmethod
265
def _timedelta_to_milliseconds(td):
266
"Convert a datetime.timedelta() to milliseconds"
267
return ((td.days * 24 * 60 * 60 * 1000)
268
+ (td.seconds * 1000)
269
+ (td.microseconds // 1000))
459
270
460
271
def timeout_milliseconds(self):
461
272
"Return the 'timeout' attribute in milliseconds"
462
return timedelta_to_milliseconds(self.timeout)
463
464
def extended_timeout_milliseconds(self):
465
"Return the 'extended_timeout' attribute in milliseconds"
466
return timedelta_to_milliseconds(self.extended_timeout)
273
return self._timedelta_to_milliseconds(self.timeout)
467
274
468
275
def interval_milliseconds(self):
469
276
"Return the 'interval' attribute in milliseconds"
470
return timedelta_to_milliseconds(self.interval)
471
472
def approval_delay_milliseconds(self):
473
return timedelta_to_milliseconds(self.approval_delay)
474
475
@staticmethod
476
def config_parser(config):
477
"""Construct a new dict of client settings of this form:
478
{ client_name: {setting_name: value, ...}, ...}
479
with exceptions for any special settings as defined above.
480
NOTE: Must be a pure function. Must return the same result
481
value given the same arguments.
482
"""
483
settings = {}
484
for client_name in config.sections():
485
section = dict(config.items(client_name))
486
client = settings[client_name] = {}
487
488
client["host"] = section["host"]
489
# Reformat values from string types to Python types
490
client["approved_by_default"] = config.getboolean(
491
client_name, "approved_by_default")
492
client["enabled"] = config.getboolean(client_name,
493
"enabled")
494
495
client["fingerprint"] = (section["fingerprint"].upper()
496
.replace(" ", ""))
497
if "secret" in section:
498
client["secret"] = section["secret"].decode("base64")
499
elif "secfile" in section:
500
with open(os.path.expanduser(os.path.expandvars
501
(section["secfile"])),
502
"rb") as secfile:
503
client["secret"] = secfile.read()
504
else:
505
raise TypeError("No secret or secfile for section {0}"
506
.format(section))
507
client["timeout"] = string_to_delta(section["timeout"])
508
client["extended_timeout"] = string_to_delta(
509
section["extended_timeout"])
510
client["interval"] = string_to_delta(section["interval"])
511
client["approval_delay"] = string_to_delta(
512
section["approval_delay"])
513
client["approval_duration"] = string_to_delta(
514
section["approval_duration"])
515
client["checker_command"] = section["checker"]
516
client["last_approval_request"] = None
517
client["last_checked_ok"] = None
518
client["last_checker_status"] = -2
519
520
return settings
521
522
def __init__(self, settings, name = None):
277
return self._timedelta_to_milliseconds(self.interval)
278
279
def __init__(self, name = None, disable_hook=None, config=None):
280
"""Note: the 'checker' key in 'config' sets the
281
'checker_command' attribute and *not* the 'checker'
282
attribute."""
523
283
self.name = name
524
# adding all client settings
525
for setting, value in settings.iteritems():
526
setattr(self, setting, value)
527
528
if self.enabled:
529
if not hasattr(self, "last_enabled"):
530
self.last_enabled = datetime.datetime.utcnow()
531
if not hasattr(self, "expires"):
532
self.expires = (datetime.datetime.utcnow()
533
+ self.timeout)
534
else:
535
self.last_enabled = None
536
self.expires = None
537
538
logger.debug("Creating client %r", self.name)
284
if config is None:
285
config = {}
286
logger.debug(u"Creating client %r", self.name)
539
287
# Uppercase and remove spaces from fingerprint for later
540
288
# comparison purposes with return value from the fingerprint()
541
289
# function
542
logger.debug(" Fingerprint: %s", self.fingerprint)
543
self.created = settings.get("created",
544
datetime.datetime.utcnow())
545
546
# attributes specific for this server instance
290
self.fingerprint = (config[u"fingerprint"].upper()
291
.replace(u" ", u""))
292
logger.debug(u" Fingerprint: %s", self.fingerprint)
293
if u"secret" in config:
294
self.secret = config[u"secret"].decode(u"base64")
295
elif u"secfile" in config:
296
with open(os.path.expanduser(os.path.expandvars
297
(config[u"secfile"])),
298
"rb") as secfile:
299
self.secret = secfile.read()
300
else:
301
raise TypeError(u"No secret or secfile for client %s"
302
% self.name)
303
self.host = config.get(u"host", u"")
304
self.created = datetime.datetime.utcnow()
305
self.enabled = False
306
self.last_enabled = None
307
self.last_checked_ok = None
308
self.timeout = string_to_delta(config[u"timeout"])
309
self.interval = string_to_delta(config[u"interval"])
310
self.disable_hook = disable_hook
547
311
self.checker = None
548
312
self.checker_initiator_tag = None
549
313
self.disable_initiator_tag = None
550
314
self.checker_callback_tag = None
315
self.checker_command = config[u"checker"]
551
316
self.current_checker_command = None
552
self.approved = None
553
self.approvals_pending = 0
554
self.changedstate = (multiprocessing_manager
555
.Condition(multiprocessing_manager
556
.Lock()))
557
self.client_structure = [attr for attr in
558
self.__dict__.iterkeys()
559
if not attr.startswith("_")]
560
self.client_structure.append("client_structure")
561
562
for name, t in inspect.getmembers(type(self),
563
lambda obj:
564
isinstance(obj,
565
property)):
566
if not name.startswith("_"):
567
self.client_structure.append(name)
568
569
# Send notice to process children that client state has changed
570
def send_changedstate(self):
571
with self.changedstate:
572
self.changedstate.notify_all()
317
self.last_connect = None
573
318
574
319
def enable(self):
575
320
"""Start this client's checker and timeout hooks"""
576
if getattr(self, "enabled", False):
321
if getattr(self, u"enabled", False):
577
322
# Already enabled
578
323
return
579
self.expires = datetime.datetime.utcnow() + self.timeout
580
self.enabled = True
581
324
self.last_enabled = datetime.datetime.utcnow()
582
self.init_checker()
583
self.send_changedstate()
584
585
def disable(self, quiet=True):
586
"""Disable this client."""
587
if not getattr(self, "enabled", False):
588
return False
589
if not quiet:
590
logger.info("Disabling client %s", self.name)
591
if getattr(self, "disable_initiator_tag", None) is not None:
592
gobject.source_remove(self.disable_initiator_tag)
593
self.disable_initiator_tag = None
594
self.expires = None
595
if getattr(self, "checker_initiator_tag", None) is not None:
596
gobject.source_remove(self.checker_initiator_tag)
597
self.checker_initiator_tag = None
598
self.stop_checker()
599
self.enabled = False
600
if not quiet:
601
self.send_changedstate()
602
# Do not run this again if called by a gobject.timeout_add
603
return False
604
605
def __del__(self):
606
self.disable()
607
608
def init_checker(self):
609
325
# Schedule a new checker to be started an 'interval' from now,
610
326
# and every interval from then on.
611
if self.checker_initiator_tag is not None:
612
gobject.source_remove(self.checker_initiator_tag)
613
327
self.checker_initiator_tag = (gobject.timeout_add
614
328
(self.interval_milliseconds(),
615
329
self.start_checker))
616
330
# Schedule a disable() when 'timeout' has passed
617
if self.disable_initiator_tag is not None:
618
gobject.source_remove(self.disable_initiator_tag)
619
331
self.disable_initiator_tag = (gobject.timeout_add
620
332
(self.timeout_milliseconds(),
621
333
self.disable))
334
self.enabled = True
622
335
# Also start a new checker *right now*.
623
336
self.start_checker()
624
337
338
def disable(self, quiet=True):
339
"""Disable this client."""
340
if not getattr(self, "enabled", False):
341
return False
342
if not quiet:
343
logger.info(u"Disabling client %s", self.name)
344
if getattr(self, u"disable_initiator_tag", False):
345
gobject.source_remove(self.disable_initiator_tag)
346
self.disable_initiator_tag = None
347
if getattr(self, u"checker_initiator_tag", False):
348
gobject.source_remove(self.checker_initiator_tag)
349
self.checker_initiator_tag = None
350
self.stop_checker()
351
if self.disable_hook:
352
self.disable_hook(self)
353
self.enabled = False
354
# Do not run this again if called by a gobject.timeout_add
355
return False
356
357
def __del__(self):
358
self.disable_hook = None
359
self.disable()
360
625
361
def checker_callback(self, pid, condition, command):
626
362
"""The checker has completed, so take appropriate actions."""
627
363
self.checker_callback_tag = None
628
364
self.checker = None
629
365
if os.WIFEXITED(condition):
630
self.last_checker_status = os.WEXITSTATUS(condition)
631
if self.last_checker_status == 0:
632
logger.info("Checker for %(name)s succeeded",
366
exitstatus = os.WEXITSTATUS(condition)
367
if exitstatus == 0:
368
logger.info(u"Checker for %(name)s succeeded",
633
369
vars(self))
634
370
self.checked_ok()
635
371
else:
636
logger.info("Checker for %(name)s failed",
372
logger.info(u"Checker for %(name)s failed",
637
373
vars(self))
638
374
else:
639
self.last_checker_status = -1
640
logger.warning("Checker for %(name)s crashed?",
375
logger.warning(u"Checker for %(name)s crashed?",
641
376
vars(self))
642
377
643
378
def checked_ok(self):
644
"""Assert that the client has been seen, alive and well."""
379
"""Bump up the timeout for this client.
380
381
This should only be called when the client has been seen,
382
alive and well.
383
"""
645
384
self.last_checked_ok = datetime.datetime.utcnow()
646
self.last_checker_status = 0
647
self.bump_timeout()
648
649
def bump_timeout(self, timeout=None):
650
"""Bump up the timeout for this client."""
651
if timeout is None:
652
timeout = self.timeout
653
if self.disable_initiator_tag is not None:
654
gobject.source_remove(self.disable_initiator_tag)
655
self.disable_initiator_tag = None
656
if getattr(self, "enabled", False):
657
self.disable_initiator_tag = (gobject.timeout_add
658
(timedelta_to_milliseconds
659
(timeout), self.disable))
660
self.expires = datetime.datetime.utcnow() + timeout
661
662
def need_approval(self):
663
self.last_approval_request = datetime.datetime.utcnow()
385
gobject.source_remove(self.disable_initiator_tag)
386
self.disable_initiator_tag = (gobject.timeout_add
387
(self.timeout_milliseconds(),
388
self.disable))
664
389
665
390
def start_checker(self):
666
391
"""Start a new checker subprocess if one is not running.
668
393
If a checker already exists, leave it running and do
669
394
nothing."""
670
395
# The reason for not killing a running checker is that if we
671
# did that, and if a checker (for some reason) started running
672
# slowly and taking more than 'interval' time, then the client
673
# would inevitably timeout, since no checker would get a
674
# chance to run to completion. If we instead leave running
396
# did that, then if a checker (for some reason) started
397
# running slowly and taking more than 'interval' time, the
398
# client would inevitably timeout, since no checker would get
399
# a chance to run to completion. If we instead leave running
675
400
# checkers alone, the checker would have to take more time
676
401
# than 'timeout' for the client to be disabled, which is as it
677
402
# should be.
679
404
# If a checker exists, make sure it is not a zombie
680
405
try:
681
406
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
682
except (AttributeError, OSError) as error:
407
except (AttributeError, OSError), error:
683
408
if (isinstance(error, OSError)
684
409
and error.errno != errno.ECHILD):
685
410
raise error
686
411
else:
687
412
if pid:
688
logger.warning("Checker was a zombie")
413
logger.warning(u"Checker was a zombie")
689
414
gobject.source_remove(self.checker_callback_tag)
690
415
self.checker_callback(pid, status,
691
416
self.current_checker_command)
692
417
# Start a new checker if needed
693
418
if self.checker is None:
694
# Escape attributes for the shell
695
escaped_attrs = dict(
696
(attr, re.escape(unicode(getattr(self, attr))))
697
for attr in
698
self.runtime_expansions)
699
419
try:
700
command = self.checker_command % escaped_attrs
701
except TypeError as error:
702
logger.error('Could not format string "%s"',
703
self.checker_command, exc_info=error)
704
return True # Try again later
420
# In case checker_command has exactly one % operator
421
command = self.checker_command % self.host
422
except TypeError:
423
# Escape attributes for the shell
424
escaped_attrs = dict((key,
425
re.escape(unicode(str(val),
426
errors=
427
u'replace')))
428
for key, val in
429
vars(self).iteritems())
430
try:
431
command = self.checker_command % escaped_attrs
432
except TypeError, error:
433
logger.error(u'Could not format string "%s":'
434
u' %s', self.checker_command, error)
435
return True # Try again later
705
436
self.current_checker_command = command
706
437
try:
707
logger.info("Starting checker %r for %s",
438
logger.info(u"Starting checker %r for %s",
708
439
command, self.name)
709
440
# We don't need to redirect stdout and stderr, since
710
441
# in normal mode, that is already done by daemon(),
712
443
# always replaced by /dev/null.)
713
444
self.checker = subprocess.Popen(command,
714
445
close_fds=True,
715
shell=True, cwd="/")
716
except OSError as error:
717
logger.error("Failed to start subprocess",
718
exc_info=error)
719
self.checker_callback_tag = (gobject.child_watch_add
720
(self.checker.pid,
721
self.checker_callback,
722
data=command))
723
# The checker may have completed before the gobject
724
# watch was added. Check for this.
725
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
726
if pid:
727
gobject.source_remove(self.checker_callback_tag)
728
self.checker_callback(pid, status, command)
446
shell=True, cwd=u"/")
447
self.checker_callback_tag = (gobject.child_watch_add
448
(self.checker.pid,
449
self.checker_callback,
450
data=command))
451
# The checker may have completed before the gobject
452
# watch was added. Check for this.
453
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
454
if pid:
455
gobject.source_remove(self.checker_callback_tag)
456
self.checker_callback(pid, status, command)
457
except OSError, error:
458
logger.error(u"Failed to start subprocess: %s",
459
error)
729
460
# Re-run this periodically if run by gobject.timeout_add
730
461
return True
731
462
734
465
if self.checker_callback_tag:
735
466
gobject.source_remove(self.checker_callback_tag)
736
467
self.checker_callback_tag = None
737
if getattr(self, "checker", None) is None:
468
if getattr(self, u"checker", None) is None:
738
469
return
739
logger.debug("Stopping checker for %(name)s", vars(self))
470
logger.debug(u"Stopping checker for %(name)s", vars(self))
740
471
try:
741
self.checker.terminate()
472
os.kill(self.checker.pid, signal.SIGTERM)
742
473
#time.sleep(0.5)
743
474
#if self.checker.poll() is None:
744
# self.checker.kill()
745
except OSError as error:
475
# os.kill(self.checker.pid, signal.SIGKILL)
476
except OSError, error:
746
477
if error.errno != errno.ESRCH: # No such process
747
478
raise
748
479
self.checker = None
749
480
750
481
751
def dbus_service_property(dbus_interface, signature="v",
752
access="readwrite", byte_arrays=False):
482
def dbus_service_property(dbus_interface, signature=u"v",
483
access=u"readwrite", byte_arrays=False):
753
484
"""Decorators for marking methods of a DBusObjectWithProperties to
754
485
become properties on the D-Bus.
755
486
762
493
"""
763
494
# Encoding deeply encoded byte arrays is not supported yet by the
764
495
# "Set" method, so we fail early here:
765
if byte_arrays and signature != "ay":
766
raise ValueError("Byte arrays not supported for non-'ay'"
767
" signature {0!r}".format(signature))
496
if byte_arrays and signature != u"ay":
497
raise ValueError(u"Byte arrays not supported for non-'ay'"
498
u" signature %r" % signature)
768
499
def decorator(func):
769
500
func._dbus_is_property = True
770
501
func._dbus_interface = dbus_interface
771
502
func._dbus_signature = signature
772
503
func._dbus_access = access
773
504
func._dbus_name = func.__name__
774
if func._dbus_name.endswith("_dbus_property"):
505
if func._dbus_name.endswith(u"_dbus_property"):
775
506
func._dbus_name = func._dbus_name[:-14]
776
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
777
return func
778
return decorator
779
780
781
def dbus_interface_annotations(dbus_interface):
782
"""Decorator for marking functions returning interface annotations
783
784
Usage:
785
786
@dbus_interface_annotations("org.example.Interface")
787
def _foo(self): # Function name does not matter
788
return {"org.freedesktop.DBus.Deprecated": "true",
789
"org.freedesktop.DBus.Property.EmitsChangedSignal":
790
"false"}
791
"""
792
def decorator(func):
793
func._dbus_is_interface = True
794
func._dbus_interface = dbus_interface
795
func._dbus_name = dbus_interface
796
return func
797
return decorator
798
799
800
def dbus_annotations(annotations):
801
"""Decorator to annotate D-Bus methods, signals or properties
802
Usage:
803
804
@dbus_service_property("org.example.Interface", signature="b",
805
access="r")
806
@dbus_annotations({{"org.freedesktop.DBus.Deprecated": "true",
807
"org.freedesktop.DBus.Property."
808
"EmitsChangedSignal": "false"})
809
def Property_dbus_property(self):
810
return dbus.Boolean(False)
811
"""
812
def decorator(func):
813
func._dbus_annotations = annotations
507
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
814
508
return func
815
509
return decorator
816
510
836
530
837
531
class DBusObjectWithProperties(dbus.service.Object):
838
532
"""A D-Bus object with properties.
839
533
840
534
Classes inheriting from this can use the dbus_service_property
841
535
decorator to expose methods as D-Bus properties. It exposes the
842
536
standard Get(), Set(), and GetAll() methods on the D-Bus.
843
537
"""
844
538
845
539
@staticmethod
846
def _is_dbus_thing(thing):
847
"""Returns a function testing if an attribute is a D-Bus thing
848
849
If called like _is_dbus_thing("method") it returns a function
850
suitable for use as predicate to inspect.getmembers().
851
"""
852
return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),
853
False)
540
def _is_dbus_property(obj):
541
return getattr(obj, u"_dbus_is_property", False)
854
542
855
def _get_all_dbus_things(self, thing):
543
def _get_all_dbus_properties(self):
856
544
"""Returns a generator of (name, attribute) pairs
857
545
"""
858
return ((getattr(athing.__get__(self), "_dbus_name",
859
name),
860
athing.__get__(self))
861
for cls in self.__class__.__mro__
862
for name, athing in
863
inspect.getmembers(cls,
864
self._is_dbus_thing(thing)))
546
return ((prop._dbus_name, prop)
547
for name, prop in
548
inspect.getmembers(self, self._is_dbus_property))
865
549
866
550
def _get_dbus_property(self, interface_name, property_name):
867
551
"""Returns a bound method if one exists which is a D-Bus
868
552
property with the specified name and interface.
869
553
"""
870
for cls in self.__class__.__mro__:
871
for name, value in (inspect.getmembers
872
(cls,
873
self._is_dbus_thing("property"))):
874
if (value._dbus_name == property_name
875
and value._dbus_interface == interface_name):
876
return value.__get__(self)
877
554
for name in (property_name,
555
property_name + u"_dbus_property"):
556
prop = getattr(self, name, None)
557
if (prop is None
558
or not self._is_dbus_property(prop)
559
or prop._dbus_name != property_name
560
or (interface_name and prop._dbus_interface
561
and interface_name != prop._dbus_interface)):
562
continue
563
return prop
878
564
# No such property
879
raise DBusPropertyNotFound(self.dbus_object_path + ":"
880
+ interface_name + "."
565
raise DBusPropertyNotFound(self.dbus_object_path + u":"
566
+ interface_name + u"."
881
567
+ property_name)
882
568
883
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
884
out_signature="v")
569
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
570
out_signature=u"v")
885
571
def Get(self, interface_name, property_name):
886
572
"""Standard D-Bus property Get() method, see D-Bus standard.
887
573
"""
888
574
prop = self._get_dbus_property(interface_name, property_name)
889
if prop._dbus_access == "write":
575
if prop._dbus_access == u"write":
890
576
raise DBusPropertyAccessException(property_name)
891
577
value = prop()
892
if not hasattr(value, "variant_level"):
578
if not hasattr(value, u"variant_level"):
893
579
return value
894
580
return type(value)(value, variant_level=value.variant_level+1)
895
581
896
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
582
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
897
583
def Set(self, interface_name, property_name, value):
898
584
"""Standard D-Bus property Set() method, see D-Bus standard.
899
585
"""
900
586
prop = self._get_dbus_property(interface_name, property_name)
901
if prop._dbus_access == "read":
587
if prop._dbus_access == u"read":
902
588
raise DBusPropertyAccessException(property_name)
903
if prop._dbus_get_args_options["byte_arrays"]:
589
if prop._dbus_get_args_options[u"byte_arrays"]:
904
590
# The byte_arrays option is not supported yet on
905
591
# signatures other than "ay".
906
if prop._dbus_signature != "ay":
592
if prop._dbus_signature != u"ay":
907
593
raise ValueError
908
value = dbus.ByteArray(b''.join(chr(byte)
909
for byte in value))
594
value = dbus.ByteArray(''.join(unichr(byte)
595
for byte in value))
910
596
prop(value)
911
597
912
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
913
out_signature="a{sv}")
598
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
599
out_signature=u"a{sv}")
914
600
def GetAll(self, interface_name):
915
601
"""Standard D-Bus property GetAll() method, see D-Bus
916
602
standard.
917
603
918
604
Note: Will not include properties with access="write".
919
605
"""
920
properties = {}
921
for name, prop in self._get_all_dbus_things("property"):
606
all = {}
607
for name, prop in self._get_all_dbus_properties():
922
608
if (interface_name
923
609
and interface_name != prop._dbus_interface):
924
610
# Interface non-empty but did not match
925
611
continue
926
612
# Ignore write-only properties
927
if prop._dbus_access == "write":
613
if prop._dbus_access == u"write":
928
614
continue
929
615
value = prop()
930
if not hasattr(value, "variant_level"):
931
properties[name] = value
616
if not hasattr(value, u"variant_level"):
617
all[name] = value
932
618
continue
933
properties[name] = type(value)(value, variant_level=
934
value.variant_level+1)
935
return dbus.Dictionary(properties, signature="sv")
619
all[name] = type(value)(value, variant_level=
620
value.variant_level+1)
621
return dbus.Dictionary(all, signature=u"sv")
936
622
937
623
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
938
out_signature="s",
624
out_signature=u"s",
939
625
path_keyword='object_path',
940
626
connection_keyword='connection')
941
627
def Introspect(self, object_path, connection):
942
"""Overloading of standard D-Bus method.
943
944
Inserts property tags and interface annotation tags.
628
"""Standard D-Bus method, overloaded to insert property tags.
945
629
"""
946
630
xmlstring = dbus.service.Object.Introspect(self, object_path,
947
631
connection)
948
632
try:
949
633
document = xml.dom.minidom.parseString(xmlstring)
950
634
def make_tag(document, name, prop):
951
e = document.createElement("property")
952
e.setAttribute("name", name)
953
e.setAttribute("type", prop._dbus_signature)
954
e.setAttribute("access", prop._dbus_access)
635
e = document.createElement(u"property")
636
e.setAttribute(u"name", name)
637
e.setAttribute(u"type", prop._dbus_signature)
638
e.setAttribute(u"access", prop._dbus_access)
955
639
return e
956
for if_tag in document.getElementsByTagName("interface"):
957
# Add property tags
640
for if_tag in document.getElementsByTagName(u"interface"):
958
641
for tag in (make_tag(document, name, prop)
959
642
for name, prop
960
in self._get_all_dbus_things("property")
643
in self._get_all_dbus_properties()
961
644
if prop._dbus_interface
962
== if_tag.getAttribute("name")):
645
== if_tag.getAttribute(u"name")):
963
646
if_tag.appendChild(tag)
964
# Add annotation tags
965
for typ in ("method", "signal", "property"):
966
for tag in if_tag.getElementsByTagName(typ):
967
annots = dict()
968
for name, prop in (self.
969
_get_all_dbus_things(typ)):
970
if (name == tag.getAttribute("name")
971
and prop._dbus_interface
972
== if_tag.getAttribute("name")):
973
annots.update(getattr
974
(prop,
975
"_dbus_annotations",
976
{}))
977
for name, value in annots.iteritems():
978
ann_tag = document.createElement(
979
"annotation")
980
ann_tag.setAttribute("name", name)
981
ann_tag.setAttribute("value", value)
982
tag.appendChild(ann_tag)
983
# Add interface annotation tags
984
for annotation, value in dict(
985
itertools.chain.from_iterable(
986
annotations().iteritems()
987
for name, annotations in
988
self._get_all_dbus_things("interface")
989
if name == if_tag.getAttribute("name")
990
)).iteritems():
991
ann_tag = document.createElement("annotation")
992
ann_tag.setAttribute("name", annotation)
993
ann_tag.setAttribute("value", value)
994
if_tag.appendChild(ann_tag)
995
647
# Add the names to the return values for the
996
648
# "org.freedesktop.DBus.Properties" methods
997
if (if_tag.getAttribute("name")
998
== "org.freedesktop.DBus.Properties"):
999
for cn in if_tag.getElementsByTagName("method"):
1000
if cn.getAttribute("name") == "Get":
1001
for arg in cn.getElementsByTagName("arg"):
1002
if (arg.getAttribute("direction")
1003
== "out"):
1004
arg.setAttribute("name", "value")
1005
elif cn.getAttribute("name") == "GetAll":
1006
for arg in cn.getElementsByTagName("arg"):
1007
if (arg.getAttribute("direction")
1008
== "out"):
1009
arg.setAttribute("name", "props")
1010
xmlstring = document.toxml("utf-8")
649
if (if_tag.getAttribute(u"name")
650
== u"org.freedesktop.DBus.Properties"):
651
for cn in if_tag.getElementsByTagName(u"method"):
652
if cn.getAttribute(u"name") == u"Get":
653
for arg in cn.getElementsByTagName(u"arg"):
654
if (arg.getAttribute(u"direction")
655
== u"out"):
656
arg.setAttribute(u"name", u"value")
657
elif cn.getAttribute(u"name") == u"GetAll":
658
for arg in cn.getElementsByTagName(u"arg"):
659
if (arg.getAttribute(u"direction")
660
== u"out"):
661
arg.setAttribute(u"name", u"props")
662
xmlstring = document.toxml(u"utf-8")
1011
663
document.unlink()
1012
664
except (AttributeError, xml.dom.DOMException,
1013
xml.parsers.expat.ExpatError) as error:
1014
logger.error("Failed to override Introspection method",
1015
exc_info=error)
665
xml.parsers.expat.ExpatError), error:
666
logger.error(u"Failed to override Introspection method",
667
error)
1016
668
return xmlstring
1017
669
1018
670
1019
def datetime_to_dbus(dt, variant_level=0):
1020
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1021
if dt is None:
1022
return dbus.String("", variant_level = variant_level)
1023
return dbus.String(dt.isoformat(),
1024
variant_level=variant_level)
1025
1026
1027
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1028
"""A class decorator; applied to a subclass of
1029
dbus.service.Object, it will add alternate D-Bus attributes with
1030
interface names according to the "alt_interface_names" mapping.
1031
Usage:
1032
1033
@alternate_dbus_interfaces({"org.example.Interface":
1034
"net.example.AlternateInterface"})
1035
class SampleDBusObject(dbus.service.Object):
1036
@dbus.service.method("org.example.Interface")
1037
def SampleDBusMethod():
1038
pass
1039
1040
The above "SampleDBusMethod" on "SampleDBusObject" will be
1041
reachable via two interfaces: "org.example.Interface" and
1042
"net.example.AlternateInterface", the latter of which will have
1043
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1044
"true", unless "deprecate" is passed with a False value.
1045
1046
This works for methods and signals, and also for D-Bus properties
1047
(from DBusObjectWithProperties) and interfaces (from the
1048
dbus_interface_annotations decorator).
1049
"""
1050
def wrapper(cls):
1051
for orig_interface_name, alt_interface_name in (
1052
alt_interface_names.iteritems()):
1053
attr = {}
1054
interface_names = set()
1055
# Go though all attributes of the class
1056
for attrname, attribute in inspect.getmembers(cls):
1057
# Ignore non-D-Bus attributes, and D-Bus attributes
1058
# with the wrong interface name
1059
if (not hasattr(attribute, "_dbus_interface")
1060
or not attribute._dbus_interface
1061
.startswith(orig_interface_name)):
1062
continue
1063
# Create an alternate D-Bus interface name based on
1064
# the current name
1065
alt_interface = (attribute._dbus_interface
1066
.replace(orig_interface_name,
1067
alt_interface_name))
1068
interface_names.add(alt_interface)
1069
# Is this a D-Bus signal?
1070
if getattr(attribute, "_dbus_is_signal", False):
1071
# Extract the original non-method function by
1072
# black magic
1073
nonmethod_func = (dict(
1074
zip(attribute.func_code.co_freevars,
1075
attribute.__closure__))["func"]
1076
.cell_contents)
1077
# Create a new, but exactly alike, function
1078
# object, and decorate it to be a new D-Bus signal
1079
# with the alternate D-Bus interface name
1080
new_function = (dbus.service.signal
1081
(alt_interface,
1082
attribute._dbus_signature)
1083
(types.FunctionType(
1084
nonmethod_func.func_code,
1085
nonmethod_func.func_globals,
1086
nonmethod_func.func_name,
1087
nonmethod_func.func_defaults,
1088
nonmethod_func.func_closure)))
1089
# Copy annotations, if any
1090
try:
1091
new_function._dbus_annotations = (
1092
dict(attribute._dbus_annotations))
1093
except AttributeError:
1094
pass
1095
# Define a creator of a function to call both the
1096
# original and alternate functions, so both the
1097
# original and alternate signals gets sent when
1098
# the function is called
1099
def fixscope(func1, func2):
1100
"""This function is a scope container to pass
1101
func1 and func2 to the "call_both" function
1102
outside of its arguments"""
1103
def call_both(*args, **kwargs):
1104
"""This function will emit two D-Bus
1105
signals by calling func1 and func2"""
1106
func1(*args, **kwargs)
1107
func2(*args, **kwargs)
1108
return call_both
1109
# Create the "call_both" function and add it to
1110
# the class
1111
attr[attrname] = fixscope(attribute, new_function)
1112
# Is this a D-Bus method?
1113
elif getattr(attribute, "_dbus_is_method", False):
1114
# Create a new, but exactly alike, function
1115
# object. Decorate it to be a new D-Bus method
1116
# with the alternate D-Bus interface name. Add it
1117
# to the class.
1118
attr[attrname] = (dbus.service.method
1119
(alt_interface,
1120
attribute._dbus_in_signature,
1121
attribute._dbus_out_signature)
1122
(types.FunctionType
1123
(attribute.func_code,
1124
attribute.func_globals,
1125
attribute.func_name,
1126
attribute.func_defaults,
1127
attribute.func_closure)))
1128
# Copy annotations, if any
1129
try:
1130
attr[attrname]._dbus_annotations = (
1131
dict(attribute._dbus_annotations))
1132
except AttributeError:
1133
pass
1134
# Is this a D-Bus property?
1135
elif getattr(attribute, "_dbus_is_property", False):
1136
# Create a new, but exactly alike, function
1137
# object, and decorate it to be a new D-Bus
1138
# property with the alternate D-Bus interface
1139
# name. Add it to the class.
1140
attr[attrname] = (dbus_service_property
1141
(alt_interface,
1142
attribute._dbus_signature,
1143
attribute._dbus_access,
1144
attribute
1145
._dbus_get_args_options
1146
["byte_arrays"])
1147
(types.FunctionType
1148
(attribute.func_code,
1149
attribute.func_globals,
1150
attribute.func_name,
1151
attribute.func_defaults,
1152
attribute.func_closure)))
1153
# Copy annotations, if any
1154
try:
1155
attr[attrname]._dbus_annotations = (
1156
dict(attribute._dbus_annotations))
1157
except AttributeError:
1158
pass
1159
# Is this a D-Bus interface?
1160
elif getattr(attribute, "_dbus_is_interface", False):
1161
# Create a new, but exactly alike, function
1162
# object. Decorate it to be a new D-Bus interface
1163
# with the alternate D-Bus interface name. Add it
1164
# to the class.
1165
attr[attrname] = (dbus_interface_annotations
1166
(alt_interface)
1167
(types.FunctionType
1168
(attribute.func_code,
1169
attribute.func_globals,
1170
attribute.func_name,
1171
attribute.func_defaults,
1172
attribute.func_closure)))
1173
if deprecate:
1174
# Deprecate all alternate interfaces
1175
iname="_AlternateDBusNames_interface_annotation{0}"
1176
for interface_name in interface_names:
1177
@dbus_interface_annotations(interface_name)
1178
def func(self):
1179
return { "org.freedesktop.DBus.Deprecated":
1180
"true" }
1181
# Find an unused name
1182
for aname in (iname.format(i)
1183
for i in itertools.count()):
1184
if aname not in attr:
1185
attr[aname] = func
1186
break
1187
if interface_names:
1188
# Replace the class with a new subclass of it with
1189
# methods, signals, etc. as created above.
1190
cls = type(b"{0}Alternate".format(cls.__name__),
1191
(cls,), attr)
1192
return cls
1193
return wrapper
1194
1195
1196
@alternate_dbus_interfaces({"se.recompile.Mandos":
1197
"se.bsnet.fukt.Mandos"})
1198
671
class ClientDBus(Client, DBusObjectWithProperties):
1199
672
"""A Client class using D-Bus
1200
673
1202
675
dbus_object_path: dbus.ObjectPath
1203
676
bus: dbus.SystemBus()
1204
677
"""
1205
1206
runtime_expansions = (Client.runtime_expansions
1207
+ ("dbus_object_path",))
1208
1209
678
# dbus.service.Object doesn't use super(), so we can't either.
1210
679
1211
680
def __init__(self, bus = None, *args, **kwargs):
1213
682
Client.__init__(self, *args, **kwargs)
1214
683
# Only now, when this client is initialized, can it show up on
1215
684
# the D-Bus
1216
client_object_name = unicode(self.name).translate(
1217
{ord("."): ord("_"),
1218
ord("-"): ord("_")})
1219
685
self.dbus_object_path = (dbus.ObjectPath
1220
("/clients/" + client_object_name))
686
(u"/clients/"
687
+ self.name.replace(u".", u"_")))
1221
688
DBusObjectWithProperties.__init__(self, self.bus,
1222
689
self.dbus_object_path)
1223
690
1224
def notifychangeproperty(transform_func,
1225
dbus_name, type_func=lambda x: x,
1226
variant_level=1):
1227
""" Modify a variable so that it's a property which announces
1228
its changes to DBus.
1229
1230
transform_fun: Function that takes a value and a variant_level
1231
and transforms it to a D-Bus type.
1232
dbus_name: D-Bus name of the variable
1233
type_func: Function that transform the value before sending it
1234
to the D-Bus. Default: no transform
1235
variant_level: D-Bus variant level. Default: 1
1236
"""
1237
attrname = "_{0}".format(dbus_name)
1238
def setter(self, value):
1239
if hasattr(self, "dbus_object_path"):
1240
if (not hasattr(self, attrname) or
1241
type_func(getattr(self, attrname, None))
1242
!= type_func(value)):
1243
dbus_value = transform_func(type_func(value),
1244
variant_level
1245
=variant_level)
1246
self.PropertyChanged(dbus.String(dbus_name),
1247
dbus_value)
1248
setattr(self, attrname, value)
1249
1250
return property(lambda self: getattr(self, attrname), setter)
1251
1252
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1253
approvals_pending = notifychangeproperty(dbus.Boolean,
1254
"ApprovalPending",
1255
type_func = bool)
1256
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1257
last_enabled = notifychangeproperty(datetime_to_dbus,
1258
"LastEnabled")
1259
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1260
type_func = lambda checker:
1261
checker is not None)
1262
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1263
"LastCheckedOK")
1264
last_checker_status = notifychangeproperty(dbus.Int16,
1265
"LastCheckerStatus")
1266
last_approval_request = notifychangeproperty(
1267
datetime_to_dbus, "LastApprovalRequest")
1268
approved_by_default = notifychangeproperty(dbus.Boolean,
1269
"ApprovedByDefault")
1270
approval_delay = notifychangeproperty(dbus.UInt64,
1271
"ApprovalDelay",
1272
type_func =
1273
timedelta_to_milliseconds)
1274
approval_duration = notifychangeproperty(
1275
dbus.UInt64, "ApprovalDuration",
1276
type_func = timedelta_to_milliseconds)
1277
host = notifychangeproperty(dbus.String, "Host")
1278
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1279
type_func =
1280
timedelta_to_milliseconds)
1281
extended_timeout = notifychangeproperty(
1282
dbus.UInt64, "ExtendedTimeout",
1283
type_func = timedelta_to_milliseconds)
1284
interval = notifychangeproperty(dbus.UInt64,
1285
"Interval",
1286
type_func =
1287
timedelta_to_milliseconds)
1288
checker_command = notifychangeproperty(dbus.String, "Checker")
1289
1290
del notifychangeproperty
691
@staticmethod
692
def _datetime_to_dbus(dt, variant_level=0):
693
"""Convert a UTC datetime.datetime() to a D-Bus type."""
694
return dbus.String(dt.isoformat(),
695
variant_level=variant_level)
696
697
def enable(self):
698
oldstate = getattr(self, u"enabled", False)
699
r = Client.enable(self)
700
if oldstate != self.enabled:
701
# Emit D-Bus signals
702
self.PropertyChanged(dbus.String(u"enabled"),
703
dbus.Boolean(True, variant_level=1))
704
self.PropertyChanged(
705
dbus.String(u"last_enabled"),
706
self._datetime_to_dbus(self.last_enabled,
707
variant_level=1))
708
return r
709
710
def disable(self, quiet = False):
711
oldstate = getattr(self, u"enabled", False)
712
r = Client.disable(self, quiet=quiet)
713
if not quiet and oldstate != self.enabled:
714
# Emit D-Bus signal
715
self.PropertyChanged(dbus.String(u"enabled"),
716
dbus.Boolean(False, variant_level=1))
717
return r
1291
718
1292
719
def __del__(self, *args, **kwargs):
1293
720
try:
1294
721
self.remove_from_connection()
1295
722
except LookupError:
1296
723
pass
1297
if hasattr(DBusObjectWithProperties, "__del__"):
724
if hasattr(DBusObjectWithProperties, u"__del__"):
1298
725
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1299
726
Client.__del__(self, *args, **kwargs)
1300
727
1302
729
*args, **kwargs):
1303
730
self.checker_callback_tag = None
1304
731
self.checker = None
732
# Emit D-Bus signal
733
self.PropertyChanged(dbus.String(u"checker_running"),
734
dbus.Boolean(False, variant_level=1))
1305
735
if os.WIFEXITED(condition):
1306
736
exitstatus = os.WEXITSTATUS(condition)
1307
737
# Emit D-Bus signal
1317
747
return Client.checker_callback(self, pid, condition, command,
1318
748
*args, **kwargs)
1319
749
750
def checked_ok(self, *args, **kwargs):
751
r = Client.checked_ok(self, *args, **kwargs)
752
# Emit D-Bus signal
753
self.PropertyChanged(
754
dbus.String(u"last_checked_ok"),
755
(self._datetime_to_dbus(self.last_checked_ok,
756
variant_level=1)))
757
return r
758
1320
759
def start_checker(self, *args, **kwargs):
1321
760
old_checker = self.checker
1322
761
if self.checker is not None:
1329
768
and old_checker_pid != self.checker.pid):
1330
769
# Emit D-Bus signal
1331
770
self.CheckerStarted(self.current_checker_command)
1332
return r
1333
1334
def _reset_approved(self):
1335
self.approved = None
1336
return False
1337
1338
def approve(self, value=True):
1339
self.approved = value
1340
gobject.timeout_add(timedelta_to_milliseconds
1341
(self.approval_duration),
1342
self._reset_approved)
1343
self.send_changedstate()
771
self.PropertyChanged(
772
dbus.String(u"checker_running"),
773
dbus.Boolean(True, variant_level=1))
774
return r
775
776
def stop_checker(self, *args, **kwargs):
777
old_checker = getattr(self, u"checker", None)
778
r = Client.stop_checker(self, *args, **kwargs)
779
if (old_checker is not None
780
and getattr(self, u"checker", None) is None):
781
self.PropertyChanged(dbus.String(u"checker_running"),
782
dbus.Boolean(False, variant_level=1))
783
return r
1344
784
1345
785
## D-Bus methods, signals & properties
1346
_interface = "se.recompile.Mandos.Client"
1347
1348
## Interfaces
1349
1350
@dbus_interface_annotations(_interface)
1351
def _foo(self):
1352
return { "org.freedesktop.DBus.Property.EmitsChangedSignal":
1353
"false"}
786
_interface = u"se.bsnet.fukt.Mandos.Client"
1354
787
1355
788
## Signals
1356
789
1357
790
# CheckerCompleted - signal
1358
@dbus.service.signal(_interface, signature="nxs")
791
@dbus.service.signal(_interface, signature=u"nxs")
1359
792
def CheckerCompleted(self, exitcode, waitstatus, command):
1360
793
"D-Bus signal"
1361
794
pass
1362
795
1363
796
# CheckerStarted - signal
1364
@dbus.service.signal(_interface, signature="s")
797
@dbus.service.signal(_interface, signature=u"s")
1365
798
def CheckerStarted(self, command):
1366
799
"D-Bus signal"
1367
800
pass
1368
801
1369
802
# PropertyChanged - signal
1370
@dbus.service.signal(_interface, signature="sv")
803
@dbus.service.signal(_interface, signature=u"sv")
1371
804
def PropertyChanged(self, property, value):
1372
805
"D-Bus signal"
1373
806
pass
1375
808
# GotSecret - signal
1376
809
@dbus.service.signal(_interface)
1377
810
def GotSecret(self):
1378
"""D-Bus signal
1379
Is sent after a successful transfer of secret from the Mandos
1380
server to mandos-client
1381
"""
811
"D-Bus signal"
1382
812
pass
1383
813
1384
814
# Rejected - signal
1385
@dbus.service.signal(_interface, signature="s")
1386
def Rejected(self, reason):
815
@dbus.service.signal(_interface)
816
def Rejected(self):
1387
817
"D-Bus signal"
1388
818
pass
1389
819
1390
# NeedApproval - signal
1391
@dbus.service.signal(_interface, signature="tb")
1392
def NeedApproval(self, timeout, default):
1393
"D-Bus signal"
1394
return self.need_approval()
1395
1396
820
## Methods
1397
821
1398
# Approve - method
1399
@dbus.service.method(_interface, in_signature="b")
1400
def Approve(self, value):
1401
self.approve(value)
1402
1403
822
# CheckedOK - method
1404
823
@dbus.service.method(_interface)
1405
824
def CheckedOK(self):
1406
self.checked_ok()
825
return self.checked_ok()
1407
826
1408
827
# Enable - method
1409
828
@dbus.service.method(_interface)
1430
849
1431
850
## Properties
1432
851
1433
# ApprovalPending - property
1434
@dbus_service_property(_interface, signature="b", access="read")
1435
def ApprovalPending_dbus_property(self):
1436
return dbus.Boolean(bool(self.approvals_pending))
1437
1438
# ApprovedByDefault - property
1439
@dbus_service_property(_interface, signature="b",
1440
access="readwrite")
1441
def ApprovedByDefault_dbus_property(self, value=None):
1442
if value is None: # get
1443
return dbus.Boolean(self.approved_by_default)
1444
self.approved_by_default = bool(value)
1445
1446
# ApprovalDelay - property
1447
@dbus_service_property(_interface, signature="t",
1448
access="readwrite")
1449
def ApprovalDelay_dbus_property(self, value=None):
1450
if value is None: # get
1451
return dbus.UInt64(self.approval_delay_milliseconds())
1452
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1453
1454
# ApprovalDuration - property
1455
@dbus_service_property(_interface, signature="t",
1456
access="readwrite")
1457
def ApprovalDuration_dbus_property(self, value=None):
1458
if value is None: # get
1459
return dbus.UInt64(timedelta_to_milliseconds(
1460
self.approval_duration))
1461
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1462
1463
# Name - property
1464
@dbus_service_property(_interface, signature="s", access="read")
1465
def Name_dbus_property(self):
852
# name - property
853
@dbus_service_property(_interface, signature=u"s", access=u"read")
854
def name_dbus_property(self):
1466
855
return dbus.String(self.name)
1467
856
1468
# Fingerprint - property
1469
@dbus_service_property(_interface, signature="s", access="read")
1470
def Fingerprint_dbus_property(self):
857
# fingerprint - property
858
@dbus_service_property(_interface, signature=u"s", access=u"read")
859
def fingerprint_dbus_property(self):
1471
860
return dbus.String(self.fingerprint)
1472
861
1473
# Host - property
1474
@dbus_service_property(_interface, signature="s",
1475
access="readwrite")
1476
def Host_dbus_property(self, value=None):
862
# host - property
863
@dbus_service_property(_interface, signature=u"s",
864
access=u"readwrite")
865
def host_dbus_property(self, value=None):
1477
866
if value is None: # get
1478
867
return dbus.String(self.host)
1479
self.host = unicode(value)
1480
1481
# Created - property
1482
@dbus_service_property(_interface, signature="s", access="read")
1483
def Created_dbus_property(self):
1484
return datetime_to_dbus(self.created)
1485
1486
# LastEnabled - property
1487
@dbus_service_property(_interface, signature="s", access="read")
1488
def LastEnabled_dbus_property(self):
1489
return datetime_to_dbus(self.last_enabled)
1490
1491
# Enabled - property
1492
@dbus_service_property(_interface, signature="b",
1493
access="readwrite")
1494
def Enabled_dbus_property(self, value=None):
868
self.host = value
869
# Emit D-Bus signal
870
self.PropertyChanged(dbus.String(u"host"),
871
dbus.String(value, variant_level=1))
872
873
# created - property
874
@dbus_service_property(_interface, signature=u"s", access=u"read")
875
def created_dbus_property(self):
876
return dbus.String(self._datetime_to_dbus(self.created))
877
878
# last_enabled - property
879
@dbus_service_property(_interface, signature=u"s", access=u"read")
880
def last_enabled_dbus_property(self):
881
if self.last_enabled is None:
882
return dbus.String(u"")
883
return dbus.String(self._datetime_to_dbus(self.last_enabled))
884
885
# enabled - property
886
@dbus_service_property(_interface, signature=u"b",
887
access=u"readwrite")
888
def enabled_dbus_property(self, value=None):
1495
889
if value is None: # get
1496
890
return dbus.Boolean(self.enabled)
1497
891
if value:
1499
893
else:
1500
894
self.disable()
1501
895
1502
# LastCheckedOK - property
1503
@dbus_service_property(_interface, signature="s",
1504
access="readwrite")
1505
def LastCheckedOK_dbus_property(self, value=None):
896
# last_checked_ok - property
897
@dbus_service_property(_interface, signature=u"s",
898
access=u"readwrite")
899
def last_checked_ok_dbus_property(self, value=None):
1506
900
if value is not None:
1507
901
self.checked_ok()
1508
902
return
1509
return datetime_to_dbus(self.last_checked_ok)
1510
1511
# LastCheckerStatus - property
1512
@dbus_service_property(_interface, signature="n",
1513
access="read")
1514
def LastCheckerStatus_dbus_property(self):
1515
return dbus.Int16(self.last_checker_status)
1516
1517
# Expires - property
1518
@dbus_service_property(_interface, signature="s", access="read")
1519
def Expires_dbus_property(self):
1520
return datetime_to_dbus(self.expires)
1521
1522
# LastApprovalRequest - property
1523
@dbus_service_property(_interface, signature="s", access="read")
1524
def LastApprovalRequest_dbus_property(self):
1525
return datetime_to_dbus(self.last_approval_request)
1526
1527
# Timeout - property
1528
@dbus_service_property(_interface, signature="t",
1529
access="readwrite")
1530
def Timeout_dbus_property(self, value=None):
903
if self.last_checked_ok is None:
904
return dbus.String(u"")
905
return dbus.String(self._datetime_to_dbus(self
906
.last_checked_ok))
907
908
# timeout - property
909
@dbus_service_property(_interface, signature=u"t",
910
access=u"readwrite")
911
def timeout_dbus_property(self, value=None):
1531
912
if value is None: # get
1532
913
return dbus.UInt64(self.timeout_milliseconds())
1533
old_timeout = self.timeout
1534
914
self.timeout = datetime.timedelta(0, 0, 0, value)
1535
# Reschedule disabling
1536
if self.enabled:
1537
now = datetime.datetime.utcnow()
1538
self.expires += self.timeout - old_timeout
1539
if self.expires <= now:
1540
# The timeout has passed
1541
self.disable()
1542
else:
1543
if (getattr(self, "disable_initiator_tag", None)
1544
is None):
1545
return
1546
gobject.source_remove(self.disable_initiator_tag)
1547
self.disable_initiator_tag = (
1548
gobject.timeout_add(
1549
timedelta_to_milliseconds(self.expires - now),
1550
self.disable))
1551
1552
# ExtendedTimeout - property
1553
@dbus_service_property(_interface, signature="t",
1554
access="readwrite")
1555
def ExtendedTimeout_dbus_property(self, value=None):
1556
if value is None: # get
1557
return dbus.UInt64(self.extended_timeout_milliseconds())
1558
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1559
1560
# Interval - property
1561
@dbus_service_property(_interface, signature="t",
1562
access="readwrite")
1563
def Interval_dbus_property(self, value=None):
915
# Emit D-Bus signal
916
self.PropertyChanged(dbus.String(u"timeout"),
917
dbus.UInt64(value, variant_level=1))
918
if getattr(self, u"disable_initiator_tag", None) is None:
919
return
920
# Reschedule timeout
921
gobject.source_remove(self.disable_initiator_tag)
922
self.disable_initiator_tag = None
923
time_to_die = (self.
924
_timedelta_to_milliseconds((self
925
.last_checked_ok
926
+ self.timeout)
927
- datetime.datetime
928
.utcnow()))
929
if time_to_die <= 0:
930
# The timeout has passed
931
self.disable()
932
else:
933
self.disable_initiator_tag = (gobject.timeout_add
934
(time_to_die, self.disable))
935
936
# interval - property
937
@dbus_service_property(_interface, signature=u"t",
938
access=u"readwrite")
939
def interval_dbus_property(self, value=None):
1564
940
if value is None: # get
1565
941
return dbus.UInt64(self.interval_milliseconds())
1566
942
self.interval = datetime.timedelta(0, 0, 0, value)
1567
if getattr(self, "checker_initiator_tag", None) is None:
943
# Emit D-Bus signal
944
self.PropertyChanged(dbus.String(u"interval"),
945
dbus.UInt64(value, variant_level=1))
946
if getattr(self, u"checker_initiator_tag", None) is None:
1568
947
return
1569
if self.enabled:
1570
# Reschedule checker run
1571
gobject.source_remove(self.checker_initiator_tag)
1572
self.checker_initiator_tag = (gobject.timeout_add
1573
(value, self.start_checker))
1574
self.start_checker() # Start one now, too
1575
1576
# Checker - property
1577
@dbus_service_property(_interface, signature="s",
1578
access="readwrite")
1579
def Checker_dbus_property(self, value=None):
948
# Reschedule checker run
949
gobject.source_remove(self.checker_initiator_tag)
950
self.checker_initiator_tag = (gobject.timeout_add
951
(value, self.start_checker))
952
self.start_checker() # Start one now, too
953
954
# checker - property
955
@dbus_service_property(_interface, signature=u"s",
956
access=u"readwrite")
957
def checker_dbus_property(self, value=None):
1580
958
if value is None: # get
1581
959
return dbus.String(self.checker_command)
1582
self.checker_command = unicode(value)
960
self.checker_command = value
961
# Emit D-Bus signal
962
self.PropertyChanged(dbus.String(u"checker"),
963
dbus.String(self.checker_command,
964
variant_level=1))
1583
965
1584
# CheckerRunning - property
1585
@dbus_service_property(_interface, signature="b",
1586
access="readwrite")
1587
def CheckerRunning_dbus_property(self, value=None):
966
# checker_running - property
967
@dbus_service_property(_interface, signature=u"b",
968
access=u"readwrite")
969
def checker_running_dbus_property(self, value=None):
1588
970
if value is None: # get
1589
971
return dbus.Boolean(self.checker is not None)
1590
972
if value:
1592
974
else:
1593
975
self.stop_checker()
1594
976
1595
# ObjectPath - property
1596
@dbus_service_property(_interface, signature="o", access="read")
1597
def ObjectPath_dbus_property(self):
977
# object_path - property
978
@dbus_service_property(_interface, signature=u"o", access=u"read")
979
def object_path_dbus_property(self):
1598
980
return self.dbus_object_path # is already a dbus.ObjectPath
1599
981
1600
# Secret = property
1601
@dbus_service_property(_interface, signature="ay",
1602
access="write", byte_arrays=True)
1603
def Secret_dbus_property(self, value):
982
# secret = property
983
@dbus_service_property(_interface, signature=u"ay",
984
access=u"write", byte_arrays=True)
985
def secret_dbus_property(self, value):
1604
986
self.secret = str(value)
1605
987
1606
988
del _interface
1607
989
1608
990
1609
class ProxyClient(object):
1610
def __init__(self, child_pipe, fpr, address):
1611
self._pipe = child_pipe
1612
self._pipe.send(('init', fpr, address))
1613
if not self._pipe.recv():
1614
raise KeyError()
1615
1616
def __getattribute__(self, name):
1617
if name == '_pipe':
1618
return super(ProxyClient, self).__getattribute__(name)
1619
self._pipe.send(('getattr', name))
1620
data = self._pipe.recv()
1621
if data[0] == 'data':
1622
return data[1]
1623
if data[0] == 'function':
1624
def func(*args, **kwargs):
1625
self._pipe.send(('funcall', name, args, kwargs))
1626
return self._pipe.recv()[1]
1627
return func
1628
1629
def __setattr__(self, name, value):
1630
if name == '_pipe':
1631
return super(ProxyClient, self).__setattr__(name, value)
1632
self._pipe.send(('setattr', name, value))
1633
1634
1635
991
class ClientHandler(socketserver.BaseRequestHandler, object):
1636
992
"""A class to handle client connections.
1637
993
1639
995
Note: This will run in its own forked process."""
1640
996
1641
997
def handle(self):
1642
with contextlib.closing(self.server.child_pipe) as child_pipe:
1643
logger.info("TCP connection from: %s",
1644
unicode(self.client_address))
1645
logger.debug("Pipe FD: %d",
1646
self.server.child_pipe.fileno())
1647
998
logger.info(u"TCP connection from: %s",
999
unicode(self.client_address))
1000
logger.debug(u"IPC Pipe FD: %d",
1001
self.server.child_pipe[1].fileno())
1002
# Open IPC pipe to parent process
1003
with contextlib.nested(self.server.child_pipe[1],
1004
self.server.parent_pipe[0]
1005
) as (ipc, ipc_return):
1648
1006
session = (gnutls.connection
1649
1007
.ClientSession(self.request,
1650
1008
gnutls.connection
1655
1013
# no X.509 keys are added to it. Therefore, we can use it
1656
1014
# here despite using OpenPGP certificates.
1657
1015
1658
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1659
# "+AES-256-CBC", "+SHA1",
1660
# "+COMP-NULL", "+CTYPE-OPENPGP",
1661
# "+DHE-DSS"))
1016
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1017
# u"+AES-256-CBC", u"+SHA1",
1018
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1019
# u"+DHE-DSS"))
1662
1020
# Use a fallback default, since this MUST be set.
1663
1021
priority = self.server.gnutls_priority
1664
1022
if priority is None:
1665
priority = "NORMAL"
1023
priority = u"NORMAL"
1666
1024
(gnutls.library.functions
1667
1025
.gnutls_priority_set_direct(session._c_object,
1668
1026
priority, None))
1670
1028
# Start communication using the Mandos protocol
1671
1029
# Get protocol number
1672
1030
line = self.request.makefile().readline()
1673
logger.debug("Protocol version: %r", line)
1031
logger.debug(u"Protocol version: %r", line)
1674
1032
try:
1675
1033
if int(line.strip().split()[0]) > 1:
1676
1034
raise RuntimeError
1677
except (ValueError, IndexError, RuntimeError) as error:
1678
logger.error("Unknown protocol version: %s", error)
1035
except (ValueError, IndexError, RuntimeError), error:
1036
logger.error(u"Unknown protocol version: %s", error)
1679
1037
return
1680
1038
1681
1039
# Start GnuTLS connection
1682
1040
try:
1683
1041
session.handshake()
1684
except gnutls.errors.GNUTLSError as error:
1685
logger.warning("Handshake failed: %s", error)
1042
except gnutls.errors.GNUTLSError, error:
1043
logger.warning(u"Handshake failed: %s", error)
1686
1044
# Do not run session.bye() here: the session is not
1687
1045
# established. Just abandon the request.
1688
1046
return
1689
logger.debug("Handshake succeeded")
1690
1691
approval_required = False
1047
logger.debug(u"Handshake succeeded")
1692
1048
try:
1693
1049
try:
1694
1050
fpr = self.fingerprint(self.peer_certificate
1695
1051
(session))
1696
except (TypeError,
1697
gnutls.errors.GNUTLSError) as error:
1698
logger.warning("Bad certificate: %s", error)
1699
return
1700
logger.debug("Fingerprint: %s", fpr)
1701
1702
try:
1703
client = ProxyClient(child_pipe, fpr,
1704
self.client_address)
1705
except KeyError:
1706
return
1707
1708
if client.approval_delay:
1709
delay = client.approval_delay
1710
client.approvals_pending += 1
1711
approval_required = True
1712
1713
while True:
1714
if not client.enabled:
1715
logger.info("Client %s is disabled",
1716
client.name)
1717
if self.server.use_dbus:
1718
# Emit D-Bus signal
1719
client.Rejected("Disabled")
1720
return
1721
1722
if client.approved or not client.approval_delay:
1723
#We are approved or approval is disabled
1052
except (TypeError, gnutls.errors.GNUTLSError), error:
1053
logger.warning(u"Bad certificate: %s", error)
1054
return
1055
logger.debug(u"Fingerprint: %s", fpr)
1056
1057
for c in self.server.clients:
1058
if c.fingerprint == fpr:
1059
client = c
1724
1060
break
1725
elif client.approved is None:
1726
logger.info("Client %s needs approval",
1727
client.name)
1728
if self.server.use_dbus:
1729
# Emit D-Bus signal
1730
client.NeedApproval(
1731
client.approval_delay_milliseconds(),
1732
client.approved_by_default)
1733
else:
1734
logger.warning("Client %s was not approved",
1735
client.name)
1736
if self.server.use_dbus:
1737
# Emit D-Bus signal
1738
client.Rejected("Denied")
1739
return
1740
1741
#wait until timeout or approved
1742
time = datetime.datetime.now()
1743
client.changedstate.acquire()
1744
client.changedstate.wait(
1745
float(timedelta_to_milliseconds(delay)
1746
/ 1000))
1747
client.changedstate.release()
1748
time2 = datetime.datetime.now()
1749
if (time2 - time) >= delay:
1750
if not client.approved_by_default:
1751
logger.warning("Client %s timed out while"
1752
" waiting for approval",
1753
client.name)
1754
if self.server.use_dbus:
1755
# Emit D-Bus signal
1756
client.Rejected("Approval timed out")
1757
return
1758
else:
1759
break
1760
else:
1761
delay -= time2 - time
1762
1061
else:
1062
ipc.write(u"NOTFOUND %s %s\n"
1063
% (fpr, unicode(self.client_address)))
1064
return
1065
1066
class ClientProxy(object):
1067
"""Client proxy object. Not for calling methods."""
1068
def __init__(self, client):
1069
self.client = client
1070
def __getattr__(self, name):
1071
if name.startswith("ipc_"):
1072
def tempfunc():
1073
ipc.write("%s %s\n" % (name[4:].upper(),
1074
self.client.name))
1075
return tempfunc
1076
if not hasattr(self.client, name):
1077
raise AttributeError
1078
ipc.write(u"GETATTR %s %s\n"
1079
% (name, self.client.fingerprint))
1080
return pickle.load(ipc_return)
1081
clientproxy = ClientProxy(client)
1082
# Have to check if client.enabled, since it is
1083
# possible that the client was disabled since the
1084
# GnuTLS session was established.
1085
if not clientproxy.enabled:
1086
clientproxy.ipc_disabled()
1087
return
1088
1089
clientproxy.ipc_sending()
1763
1090
sent_size = 0
1764
1091
while sent_size < len(client.secret):
1765
try:
1766
sent = session.send(client.secret[sent_size:])
1767
except gnutls.errors.GNUTLSError as error:
1768
logger.warning("gnutls send failed",
1769
exc_info=error)
1770
return
1771
logger.debug("Sent: %d, remaining: %d",
1092
sent = session.send(client.secret[sent_size:])
1093
logger.debug(u"Sent: %d, remaining: %d",
1772
1094
sent, len(client.secret)
1773
1095
- (sent_size + sent))
1774
1096
sent_size += sent
1775
1776
logger.info("Sending secret to %s", client.name)
1777
# bump the timeout using extended_timeout
1778
client.bump_timeout(client.extended_timeout)
1779
if self.server.use_dbus:
1780
# Emit D-Bus signal
1781
client.GotSecret()
1782
1783
1097
finally:
1784
if approval_required:
1785
client.approvals_pending -= 1
1786
try:
1787
session.bye()
1788
except gnutls.errors.GNUTLSError as error:
1789
logger.warning("GnuTLS bye failed",
1790
exc_info=error)
1098
session.bye()
1791
1099
1792
1100
@staticmethod
1793
1101
def peer_certificate(session):
1803
1111
.gnutls_certificate_get_peers
1804
1112
(session._c_object, ctypes.byref(list_size)))
1805
1113
if not bool(cert_list) and list_size.value != 0:
1806
raise gnutls.errors.GNUTLSError("error getting peer"
1807
" certificate")
1114
raise gnutls.errors.GNUTLSError(u"error getting peer"
1115
u" certificate")
1808
1116
if list_size.value == 0:
1809
1117
return None
1810
1118
cert = cert_list[0]
1836
1144
if crtverify.value != 0:
1837
1145
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1838
1146
raise (gnutls.errors.CertificateSecurityError
1839
("Verify failed"))
1147
(u"Verify failed"))
1840
1148
# New buffer for the fingerprint
1841
1149
buf = ctypes.create_string_buffer(20)
1842
1150
buf_len = ctypes.c_size_t()
1849
1157
# Convert the buffer to a Python bytestring
1850
1158
fpr = ctypes.string_at(buf, buf_len.value)
1851
1159
# Convert the bytestring to hexadecimal notation
1852
hex_fpr = binascii.hexlify(fpr).upper()
1160
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1853
1161
return hex_fpr
1854
1162
1855
1163
1856
class MultiprocessingMixIn(object):
1857
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
1858
def sub_process_main(self, request, address):
1859
try:
1860
self.finish_request(request, address)
1861
except Exception:
1862
self.handle_error(request, address)
1863
self.close_request(request)
1864
1865
def process_request(self, request, address):
1866
"""Start a new process to process the request."""
1867
proc = multiprocessing.Process(target = self.sub_process_main,
1868
args = (request, address))
1869
proc.start()
1870
return proc
1871
1872
1873
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1874
""" adds a pipe to the MixIn """
1164
class ForkingMixInWithPipes(socketserver.ForkingMixIn, object):
1165
"""Like socketserver.ForkingMixIn, but also pass a pipe pair."""
1875
1166
def process_request(self, request, client_address):
1876
1167
"""Overrides and wraps the original process_request().
1877
1168
1878
1169
This function creates a new pipe in self.pipe
1879
1170
"""
1880
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1881
1882
proc = MultiprocessingMixIn.process_request(self, request,
1883
client_address)
1884
self.child_pipe.close()
1885
self.add_pipe(parent_pipe, proc)
1886
1887
def add_pipe(self, parent_pipe, proc):
1171
# Child writes to child_pipe
1172
self.child_pipe = map(os.fdopen, os.pipe(), u"rw", (1, 0))
1173
# Parent writes to parent_pipe
1174
self.parent_pipe = map(os.fdopen, os.pipe(), u"rw", (1, 0))
1175
super(ForkingMixInWithPipes,
1176
self).process_request(request, client_address)
1177
# Close unused ends for parent
1178
self.parent_pipe[0].close() # close read end
1179
self.child_pipe[1].close() # close write end
1180
self.add_pipe_fds(self.child_pipe[0], self.parent_pipe[1])
1181
def add_pipe_fds(self, child_pipe_fd, parent_pipe_fd):
1888
1182
"""Dummy function; override as necessary"""
1889
raise NotImplementedError
1890
1891
1892
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1183
child_pipe_fd.close()
1184
parent_pipe_fd.close()
1185
1186
1187
class IPv6_TCPServer(ForkingMixInWithPipes,
1893
1188
socketserver.TCPServer, object):
1894
1189
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1895
1190
1899
1194
use_ipv6: Boolean; to use IPv6 or not
1900
1195
"""
1901
1196
def __init__(self, server_address, RequestHandlerClass,
1902
interface=None, use_ipv6=True, socketfd=None):
1903
"""If socketfd is set, use that file descriptor instead of
1904
creating a new one with socket.socket().
1905
"""
1197
interface=None, use_ipv6=True):
1906
1198
self.interface = interface
1907
1199
if use_ipv6:
1908
1200
self.address_family = socket.AF_INET6
1909
if socketfd is not None:
1910
# Save the file descriptor
1911
self.socketfd = socketfd
1912
# Save the original socket.socket() function
1913
self.socket_socket = socket.socket
1914
# To implement --socket, we monkey patch socket.socket.
1915
#
1916
# (When socketserver.TCPServer is a new-style class, we
1917
# could make self.socket into a property instead of monkey
1918
# patching socket.socket.)
1919
#
1920
# Create a one-time-only replacement for socket.socket()
1921
@functools.wraps(socket.socket)
1922
def socket_wrapper(*args, **kwargs):
1923
# Restore original function so subsequent calls are
1924
# not affected.
1925
socket.socket = self.socket_socket
1926
del self.socket_socket
1927
# This time only, return a new socket object from the
1928
# saved file descriptor.
1929
return socket.fromfd(self.socketfd, *args, **kwargs)
1930
# Replace socket.socket() function with wrapper
1931
socket.socket = socket_wrapper
1932
# The socketserver.TCPServer.__init__ will call
1933
# socket.socket(), which might be our replacement,
1934
# socket_wrapper(), if socketfd was set.
1935
1201
socketserver.TCPServer.__init__(self, server_address,
1936
1202
RequestHandlerClass)
1937
1938
1203
def server_bind(self):
1939
1204
"""This overrides the normal server_bind() function
1940
1205
to bind to an interface if one was specified, and also NOT to
1941
1206
bind to an address or port if they were not specified."""
1942
1207
if self.interface is not None:
1943
1208
if SO_BINDTODEVICE is None:
1944
logger.error("SO_BINDTODEVICE does not exist;"
1945
" cannot bind to interface %s",
1209
logger.error(u"SO_BINDTODEVICE does not exist;"
1210
u" cannot bind to interface %s",
1946
1211
self.interface)
1947
1212
else:
1948
1213
try:
1949
1214
self.socket.setsockopt(socket.SOL_SOCKET,
1950
1215
SO_BINDTODEVICE,
1951
str(self.interface + '\0'))
1952
except socket.error as error:
1953
if error.errno == errno.EPERM:
1954
logger.error("No permission to bind to"
1955
" interface %s", self.interface)
1956
elif error.errno == errno.ENOPROTOOPT:
1957
logger.error("SO_BINDTODEVICE not available;"
1958
" cannot bind to interface %s",
1959
self.interface)
1960
elif error.errno == errno.ENODEV:
1961
logger.error("Interface %s does not exist,"
1962
" cannot bind", self.interface)
1216
str(self.interface
1217
+ u'\0'))
1218
except socket.error, error:
1219
if error[0] == errno.EPERM:
1220
logger.error(u"No permission to"
1221
u" bind to interface %s",
1222
self.interface)
1223
elif error[0] == errno.ENOPROTOOPT:
1224
logger.error(u"SO_BINDTODEVICE not available;"
1225
u" cannot bind to interface %s",
1226
self.interface)
1963
1227
else:
1964
1228
raise
1965
1229
# Only bind(2) the socket if we really need to.
1966
1230
if self.server_address[0] or self.server_address[1]:
1967
1231
if not self.server_address[0]:
1968
1232
if self.address_family == socket.AF_INET6:
1969
any_address = "::" # in6addr_any
1233
any_address = u"::" # in6addr_any
1970
1234
else:
1971
1235
any_address = socket.INADDR_ANY
1972
1236
self.server_address = (any_address,
1995
1259
"""
1996
1260
def __init__(self, server_address, RequestHandlerClass,
1997
1261
interface=None, use_ipv6=True, clients=None,
1998
gnutls_priority=None, use_dbus=True, socketfd=None):
1262
gnutls_priority=None, use_dbus=True):
1999
1263
self.enabled = False
2000
1264
self.clients = clients
2001
1265
if self.clients is None:
2002
self.clients = {}
1266
self.clients = set()
2003
1267
self.use_dbus = use_dbus
2004
1268
self.gnutls_priority = gnutls_priority
2005
1269
IPv6_TCPServer.__init__(self, server_address,
2006
1270
RequestHandlerClass,
2007
1271
interface = interface,
2008
use_ipv6 = use_ipv6,
2009
socketfd = socketfd)
1272
use_ipv6 = use_ipv6)
2010
1273
def server_activate(self):
2011
1274
if self.enabled:
2012
1275
return socketserver.TCPServer.server_activate(self)
2013
2014
1276
def enable(self):
2015
1277
self.enabled = True
2016
2017
def add_pipe(self, parent_pipe, proc):
1278
def add_pipe_fds(self, child_pipe_fd, parent_pipe_fd):
2018
1279
# Call "handle_ipc" for both data and EOF events
2019
gobject.io_add_watch(parent_pipe.fileno(),
1280
gobject.io_add_watch(child_pipe_fd.fileno(),
2020
1281
gobject.IO_IN | gobject.IO_HUP,
2021
1282
functools.partial(self.handle_ipc,
2022
parent_pipe =
2023
parent_pipe,
2024
proc = proc))
2025
2026
def handle_ipc(self, source, condition, parent_pipe=None,
2027
proc = None, client_object=None):
2028
# error, or the other end of multiprocessing.Pipe has closed
2029
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2030
# Wait for other process to exit
2031
proc.join()
2032
return False
2033
2034
# Read a request from the child
2035
request = parent_pipe.recv()
2036
command = request[0]
2037
2038
if command == 'init':
2039
fpr = request[1]
2040
address = request[2]
2041
2042
for c in self.clients.itervalues():
2043
if c.fingerprint == fpr:
2044
client = c
2045
break
2046
else:
2047
logger.info("Client not found for fingerprint: %s, ad"
2048
"dress: %s", fpr, address)
2049
if self.use_dbus:
2050
# Emit D-Bus signal
2051
mandos_dbus_service.ClientNotFound(fpr,
2052
address[0])
2053
parent_pipe.send(False)
2054
return False
2055
2056
gobject.io_add_watch(parent_pipe.fileno(),
2057
gobject.IO_IN | gobject.IO_HUP,
2058
functools.partial(self.handle_ipc,
2059
parent_pipe =
2060
parent_pipe,
2061
proc = proc,
2062
client_object =
2063
client))
2064
parent_pipe.send(True)
2065
# remove the old hook in favor of the new above hook on
2066
# same fileno
2067
return False
2068
if command == 'funcall':
2069
funcname = request[1]
2070
args = request[2]
2071
kwargs = request[3]
2072
2073
parent_pipe.send(('data', getattr(client_object,
2074
funcname)(*args,
2075
**kwargs)))
2076
2077
if command == 'getattr':
2078
attrname = request[1]
2079
if callable(client_object.__getattribute__(attrname)):
2080
parent_pipe.send(('function',))
2081
else:
2082
parent_pipe.send(('data', client_object
2083
.__getattribute__(attrname)))
2084
2085
if command == 'setattr':
2086
attrname = request[1]
2087
value = request[2]
2088
setattr(client_object, attrname, value)
2089
1283
reply = parent_pipe_fd,
1284
sender= child_pipe_fd))
1285
def handle_ipc(self, source, condition, reply=None, sender=None):
1286
condition_names = {
1287
gobject.IO_IN: u"IN", # There is data to read.
1288
gobject.IO_OUT: u"OUT", # Data can be written (without
1289
# blocking).
1290
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1291
gobject.IO_ERR: u"ERR", # Error condition.
1292
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1293
# broken, usually for pipes and
1294
# sockets).
1295
}
1296
conditions_string = ' | '.join(name
1297
for cond, name in
1298
condition_names.iteritems()
1299
if cond & condition)
1300
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1301
conditions_string)
1302
1303
# Read a line from the file object
1304
cmdline = sender.readline()
1305
if not cmdline: # Empty line means end of file
1306
# close the IPC pipes
1307
sender.close()
1308
reply.close()
1309
1310
# Stop calling this function
1311
return False
1312
1313
logger.debug(u"IPC command: %r", cmdline)
1314
1315
# Parse and act on command
1316
cmd, args = cmdline.rstrip(u"\r\n").split(None, 1)
1317
1318
if cmd == u"NOTFOUND":
1319
fpr, address = args.split(None, 1)
1320
logger.warning(u"Client not found for fingerprint: %s, ad"
1321
u"dress: %s", fpr, address)
1322
if self.use_dbus:
1323
# Emit D-Bus signal
1324
mandos_dbus_service.ClientNotFound(fpr, address)
1325
elif cmd == u"DISABLED":
1326
for client in self.clients:
1327
if client.name == args:
1328
logger.warning(u"Client %s is disabled", args)
1329
if self.use_dbus:
1330
# Emit D-Bus signal
1331
client.Rejected()
1332
break
1333
else:
1334
logger.error(u"Unknown client %s is disabled", args)
1335
elif cmd == u"SENDING":
1336
for client in self.clients:
1337
if client.name == args:
1338
logger.info(u"Sending secret to %s", client.name)
1339
client.checked_ok()
1340
if self.use_dbus:
1341
# Emit D-Bus signal
1342
client.GotSecret()
1343
break
1344
else:
1345
logger.error(u"Sending secret to unknown client %s",
1346
args)
1347
elif cmd == u"GETATTR":
1348
attr_name, fpr = args.split(None, 1)
1349
for client in self.clients:
1350
if client.fingerprint == fpr:
1351
attr_value = getattr(client, attr_name, None)
1352
logger.debug("IPC reply: %r", attr_value)
1353
pickle.dump(attr_value, reply)
1354
break
1355
else:
1356
logger.error(u"Client %s on address %s requesting "
1357
u"attribute %s not found", fpr, address,
1358
attr_name)
1359
pickle.dump(None, reply)
1360
else:
1361
logger.error(u"Unknown IPC command: %r", cmdline)
1362
1363
# Keep calling this function
2090
1364
return True
2091
1365
2092
1366
2093
1367
def string_to_delta(interval):
2094
1368
"""Parse a string and return a datetime.timedelta
2095
1369
2096
>>> string_to_delta('7d')
1370
>>> string_to_delta(u'7d')
2097
1371
datetime.timedelta(7)
2098
>>> string_to_delta('60s')
1372
>>> string_to_delta(u'60s')
2099
1373
datetime.timedelta(0, 60)
2100
>>> string_to_delta('60m')
1374
>>> string_to_delta(u'60m')
2101
1375
datetime.timedelta(0, 3600)
2102
>>> string_to_delta('24h')
1376
>>> string_to_delta(u'24h')
2103
1377
datetime.timedelta(1)
2104
>>> string_to_delta('1w')
1378
>>> string_to_delta(u'1w')
2105
1379
datetime.timedelta(7)
2106
>>> string_to_delta('5m 30s')
1380
>>> string_to_delta(u'5m 30s')
2107
1381
datetime.timedelta(0, 330)
2108
1382
"""
2109
1383
timevalue = datetime.timedelta(0)
2111
1385
try:
2112
1386
suffix = unicode(s[-1])
2113
1387
value = int(s[:-1])
2114
if suffix == "d":
1388
if suffix == u"d":
2115
1389
delta = datetime.timedelta(value)
2116
elif suffix == "s":
1390
elif suffix == u"s":
2117
1391
delta = datetime.timedelta(0, value)
2118
elif suffix == "m":
1392
elif suffix == u"m":
2119
1393
delta = datetime.timedelta(0, 0, 0, 0, value)
2120
elif suffix == "h":
1394
elif suffix == u"h":
2121
1395
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
2122
elif suffix == "w":
1396
elif suffix == u"w":
2123
1397
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2124
1398
else:
2125
raise ValueError("Unknown suffix {0!r}"
2126
.format(suffix))
2127
except (ValueError, IndexError) as e:
2128
raise ValueError(*(e.args))
1399
raise ValueError(u"Unknown suffix %r" % suffix)
1400
except (ValueError, IndexError), e:
1401
raise ValueError(e.message)
2129
1402
timevalue += delta
2130
1403
return timevalue
2131
1404
2132
1405
1406
def if_nametoindex(interface):
1407
"""Call the C function if_nametoindex(), or equivalent
1408
1409
Note: This function cannot accept a unicode string."""
1410
global if_nametoindex
1411
try:
1412
if_nametoindex = (ctypes.cdll.LoadLibrary
1413
(ctypes.util.find_library(u"c"))
1414
.if_nametoindex)
1415
except (OSError, AttributeError):
1416
logger.warning(u"Doing if_nametoindex the hard way")
1417
def if_nametoindex(interface):
1418
"Get an interface index the hard way, i.e. using fcntl()"
1419
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1420
with contextlib.closing(socket.socket()) as s:
1421
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1422
struct.pack(str(u"16s16x"),
1423
interface))
1424
interface_index = struct.unpack(str(u"I"),
1425
ifreq[16:20])[0]
1426
return interface_index
1427
return if_nametoindex(interface)
1428
1429
2133
1430
def daemon(nochdir = False, noclose = False):
2134
1431
"""See daemon(3). Standard BSD Unix function.
2135
1432
2138
1435
sys.exit()
2139
1436
os.setsid()
2140
1437
if not nochdir:
2141
os.chdir("/")
1438
os.chdir(u"/")
2142
1439
if os.fork():
2143
1440
sys.exit()
2144
1441
if not noclose:
2145
1442
# Close all standard open file descriptors
2146
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1443
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2147
1444
if not stat.S_ISCHR(os.fstat(null).st_mode):
2148
1445
raise OSError(errno.ENODEV,
2149
"{0} not a character device"
2150
.format(os.devnull))
1446
u"%s not a character device"
1447
% os.path.devnull)
2151
1448
os.dup2(null, sys.stdin.fileno())
2152
1449
os.dup2(null, sys.stdout.fileno())
2153
1450
os.dup2(null, sys.stderr.fileno())
2160
1457
##################################################################
2161
1458
# Parsing of options, both command line and config file
2162
1459
2163
parser = argparse.ArgumentParser()
2164
parser.add_argument("-v", "--version", action="version",
2165
version = "%(prog)s {0}".format(version),
2166
help="show version number and exit")
2167
parser.add_argument("-i", "--interface", metavar="IF",
2168
help="Bind to interface IF")
2169
parser.add_argument("-a", "--address",
2170
help="Address to listen for requests on")
2171
parser.add_argument("-p", "--port", type=int,
2172
help="Port number to receive requests on")
2173
parser.add_argument("--check", action="store_true",
2174
help="Run self-test")
2175
parser.add_argument("--debug", action="store_true",
2176
help="Debug mode; run in foreground and log"
2177
" to terminal")
2178
parser.add_argument("--debuglevel", metavar="LEVEL",
2179
help="Debug level for stdout output")
2180
parser.add_argument("--priority", help="GnuTLS"
2181
" priority string (see GnuTLS documentation)")
2182
parser.add_argument("--servicename",
2183
metavar="NAME", help="Zeroconf service name")
2184
parser.add_argument("--configdir",
2185
default="/etc/mandos", metavar="DIR",
2186
help="Directory to search for configuration"
2187
" files")
2188
parser.add_argument("--no-dbus", action="store_false",
2189
dest="use_dbus", help="Do not provide D-Bus"
2190
" system bus interface")
2191
parser.add_argument("--no-ipv6", action="store_false",
2192
dest="use_ipv6", help="Do not use IPv6")
2193
parser.add_argument("--no-restore", action="store_false",
2194
dest="restore", help="Do not restore stored"
2195
" state")
2196
parser.add_argument("--socket", type=int,
2197
help="Specify a file descriptor to a network"
2198
" socket to use instead of creating one")
2199
parser.add_argument("--statedir", metavar="DIR",
2200
help="Directory to save/restore state in")
2201
parser.add_argument("--foreground", action="store_true",
2202
help="Run in foreground")
2203
2204
options = parser.parse_args()
1460
parser = optparse.OptionParser(version = "%%prog %s" % version)
1461
parser.add_option("-i", u"--interface", type=u"string",
1462
metavar="IF", help=u"Bind to interface IF")
1463
parser.add_option("-a", u"--address", type=u"string",
1464
help=u"Address to listen for requests on")
1465
parser.add_option("-p", u"--port", type=u"int",
1466
help=u"Port number to receive requests on")
1467
parser.add_option("--check", action=u"store_true",
1468
help=u"Run self-test")
1469
parser.add_option("--debug", action=u"store_true",
1470
help=u"Debug mode; run in foreground and log to"
1471
u" terminal")
1472
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1473
u" priority string (see GnuTLS documentation)")
1474
parser.add_option("--servicename", type=u"string",
1475
metavar=u"NAME", help=u"Zeroconf service name")
1476
parser.add_option("--configdir", type=u"string",
1477
default=u"/etc/mandos", metavar=u"DIR",
1478
help=u"Directory to search for configuration"
1479
u" files")
1480
parser.add_option("--no-dbus", action=u"store_false",
1481
dest=u"use_dbus", help=u"Do not provide D-Bus"
1482
u" system bus interface")
1483
parser.add_option("--no-ipv6", action=u"store_false",
1484
dest=u"use_ipv6", help=u"Do not use IPv6")
1485
options = parser.parse_args()[0]
2205
1486
2206
1487
if options.check:
2207
1488
import doctest
2209
1490
sys.exit()
2210
1491
2211
1492
# Default values for config file for server-global settings
2212
server_defaults = { "interface": "",
2213
"address": "",
2214
"port": "",
2215
"debug": "False",
2216
"priority":
2217
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2218
"servicename": "Mandos",
2219
"use_dbus": "True",
2220
"use_ipv6": "True",
2221
"debuglevel": "",
2222
"restore": "True",
2223
"socket": "",
2224
"statedir": "/var/lib/mandos",
2225
"foreground": "False",
1493
server_defaults = { u"interface": u"",
1494
u"address": u"",
1495
u"port": u"",
1496
u"debug": u"False",
1497
u"priority":
1498
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1499
u"servicename": u"Mandos",
1500
u"use_dbus": u"True",
1501
u"use_ipv6": u"True",
2226
1502
}
2227
1503
2228
1504
# Parse config file for server-global settings
2229
1505
server_config = configparser.SafeConfigParser(server_defaults)
2230
1506
del server_defaults
2231
1507
server_config.read(os.path.join(options.configdir,
2232
"mandos.conf"))
1508
u"mandos.conf"))
2233
1509
# Convert the SafeConfigParser object to a dict
2234
1510
server_settings = server_config.defaults()
2235
1511
# Use the appropriate methods on the non-string config options
2236
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
2237
server_settings[option] = server_config.getboolean("DEFAULT",
1512
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1513
server_settings[option] = server_config.getboolean(u"DEFAULT",
2238
1514
option)
2239
1515
if server_settings["port"]:
2240
server_settings["port"] = server_config.getint("DEFAULT",
2241
"port")
2242
if server_settings["socket"]:
2243
server_settings["socket"] = server_config.getint("DEFAULT",
2244
"socket")
2245
# Later, stdin will, and stdout and stderr might, be dup'ed
2246
# over with an opened os.devnull. But we don't want this to
2247
# happen with a supplied network socket.
2248
if 0 <= server_settings["socket"] <= 2:
2249
server_settings["socket"] = os.dup(server_settings
2250
["socket"])
1516
server_settings["port"] = server_config.getint(u"DEFAULT",
1517
u"port")
2251
1518
del server_config
2252
1519
2253
1520
# Override the settings from the config file with command line
2254
1521
# options, if set.
2255
for option in ("interface", "address", "port", "debug",
2256
"priority", "servicename", "configdir",
2257
"use_dbus", "use_ipv6", "debuglevel", "restore",
2258
"statedir", "socket", "foreground"):
1522
for option in (u"interface", u"address", u"port", u"debug",
1523
u"priority", u"servicename", u"configdir",
1524
u"use_dbus", u"use_ipv6"):
2259
1525
value = getattr(options, option)
2260
1526
if value is not None:
2261
1527
server_settings[option] = value
2264
1530
for option in server_settings.keys():
2265
1531
if type(server_settings[option]) is str:
2266
1532
server_settings[option] = unicode(server_settings[option])
2267
# Debug implies foreground
2268
if server_settings["debug"]:
2269
server_settings["foreground"] = True
2270
1533
# Now we have our good server settings in "server_settings"
2271
1534
2272
1535
##################################################################
2273
1536
2274
1537
# For convenience
2275
debug = server_settings["debug"]
2276
debuglevel = server_settings["debuglevel"]
2277
use_dbus = server_settings["use_dbus"]
2278
use_ipv6 = server_settings["use_ipv6"]
2279
stored_state_path = os.path.join(server_settings["statedir"],
2280
stored_state_file)
2281
foreground = server_settings["foreground"]
2282
2283
if debug:
2284
initlogger(debug, logging.DEBUG)
2285
else:
2286
if not debuglevel:
2287
initlogger(debug)
2288
else:
2289
level = getattr(logging, debuglevel.upper())
2290
initlogger(debug, level)
2291
2292
if server_settings["servicename"] != "Mandos":
1538
debug = server_settings[u"debug"]
1539
use_dbus = server_settings[u"use_dbus"]
1540
use_ipv6 = server_settings[u"use_ipv6"]
1541
1542
if not debug:
1543
syslogger.setLevel(logging.WARNING)
1544
console.setLevel(logging.WARNING)
1545
1546
if server_settings[u"servicename"] != u"Mandos":
2293
1547
syslogger.setFormatter(logging.Formatter
2294
('Mandos ({0}) [%(process)d]:'
2295
' %(levelname)s: %(message)s'
2296
.format(server_settings
2297
["servicename"])))
1548
(u'Mandos (%s) [%%(process)d]:'
1549
u' %%(levelname)s: %%(message)s'
1550
% server_settings[u"servicename"]))
2298
1551
2299
1552
# Parse config file with clients
2300
client_config = configparser.SafeConfigParser(Client
2301
.client_defaults)
2302
client_config.read(os.path.join(server_settings["configdir"],
2303
"clients.conf"))
1553
client_defaults = { u"timeout": u"1h",
1554
u"interval": u"5m",
1555
u"checker": u"fping -q -- %%(host)s",
1556
u"host": u"",
1557
}
1558
client_config = configparser.SafeConfigParser(client_defaults)
1559
client_config.read(os.path.join(server_settings[u"configdir"],
1560
u"clients.conf"))
2304
1561
2305
1562
global mandos_dbus_service
2306
1563
mandos_dbus_service = None
2307
1564
2308
tcp_server = MandosServer((server_settings["address"],
2309
server_settings["port"]),
1565
tcp_server = MandosServer((server_settings[u"address"],
1566
server_settings[u"port"]),
2310
1567
ClientHandler,
2311
interface=(server_settings["interface"]
2312
or None),
1568
interface=server_settings[u"interface"],
2313
1569
use_ipv6=use_ipv6,
2314
1570
gnutls_priority=
2315
server_settings["priority"],
2316
use_dbus=use_dbus,
2317
socketfd=(server_settings["socket"]
2318
or None))
2319
if not foreground:
2320
pidfilename = "/var/run/mandos.pid"
2321
pidfile = None
2322
try:
2323
pidfile = open(pidfilename, "w")
2324
except IOError as e:
2325
logger.error("Could not open file %r", pidfilename,
2326
exc_info=e)
1571
server_settings[u"priority"],
1572
use_dbus=use_dbus)
1573
pidfilename = u"/var/run/mandos.pid"
1574
try:
1575
pidfile = open(pidfilename, u"w")
1576
except IOError:
1577
logger.error(u"Could not open file %r", pidfilename)
2327
1578
2328
for name in ("_mandos", "mandos", "nobody"):
1579
try:
1580
uid = pwd.getpwnam(u"_mandos").pw_uid
1581
gid = pwd.getpwnam(u"_mandos").pw_gid
1582
except KeyError:
2329
1583
try:
2330
uid = pwd.getpwnam(name).pw_uid
2331
gid = pwd.getpwnam(name).pw_gid
2332
break
1584
uid = pwd.getpwnam(u"mandos").pw_uid
1585
gid = pwd.getpwnam(u"mandos").pw_gid
2333
1586
except KeyError:
2334
continue
2335
else:
2336
uid = 65534
2337
gid = 65534
1587
try:
1588
uid = pwd.getpwnam(u"nobody").pw_uid
1589
gid = pwd.getpwnam(u"nobody").pw_gid
1590
except KeyError:
1591
uid = 65534
1592
gid = 65534
2338
1593
try:
2339
1594
os.setgid(gid)
2340
1595
os.setuid(uid)
2341
except OSError as error:
2342
if error.errno != errno.EPERM:
1596
except OSError, error:
1597
if error[0] != errno.EPERM:
2343
1598
raise error
2344
1599
1600
# Enable all possible GnuTLS debugging
2345
1601
if debug:
2346
# Enable all possible GnuTLS debugging
2347
2348
1602
# "Use a log level over 10 to enable all debugging options."
2349
1603
# - GnuTLS manual
2350
1604
gnutls.library.functions.gnutls_global_set_log_level(11)
2351
1605
2352
1606
@gnutls.library.types.gnutls_log_func
2353
1607
def debug_gnutls(level, string):
2354
logger.debug("GnuTLS: %s", string[:-1])
1608
logger.debug(u"GnuTLS: %s", string[:-1])
2355
1609
2356
1610
(gnutls.library.functions
2357
1611
.gnutls_global_set_log_function(debug_gnutls))
2358
2359
# Redirect stdin so all checkers get /dev/null
2360
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2361
os.dup2(null, sys.stdin.fileno())
2362
if null > 2:
2363
os.close(null)
2364
2365
# Need to fork before connecting to D-Bus
2366
if not foreground:
2367
# Close all input and output, do double fork, etc.
2368
daemon()
2369
2370
# multiprocessing will use threads, so before we use gobject we
2371
# need to inform gobject that threads will be used.
2372
gobject.threads_init()
2373
1612
2374
1613
global main_loop
2375
1614
# From the Avahi example code
2376
DBusGMainLoop(set_as_default=True)
1615
DBusGMainLoop(set_as_default=True )
2377
1616
main_loop = gobject.MainLoop()
2378
1617
bus = dbus.SystemBus()
2379
1618
# End of Avahi example code
2380
1619
if use_dbus:
2381
1620
try:
2382
bus_name = dbus.service.BusName("se.recompile.Mandos",
1621
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
2383
1622
bus, do_not_queue=True)
2384
old_bus_name = (dbus.service.BusName
2385
("se.bsnet.fukt.Mandos", bus,
2386
do_not_queue=True))
2387
except dbus.exceptions.NameExistsException as e:
2388
logger.error("Disabling D-Bus:", exc_info=e)
1623
except dbus.exceptions.NameExistsException, e:
1624
logger.error(unicode(e) + u", disabling D-Bus")
2389
1625
use_dbus = False
2390
server_settings["use_dbus"] = False
1626
server_settings[u"use_dbus"] = False
2391
1627
tcp_server.use_dbus = False
2392
1628
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2393
service = AvahiServiceToSyslog(name =
2394
server_settings["servicename"],
2395
servicetype = "_mandos._tcp",
2396
protocol = protocol, bus = bus)
1629
service = AvahiService(name = server_settings[u"servicename"],
1630
servicetype = u"_mandos._tcp",
1631
protocol = protocol, bus = bus)
2397
1632
if server_settings["interface"]:
2398
1633
service.interface = (if_nametoindex
2399
(str(server_settings["interface"])))
2400
2401
global multiprocessing_manager
2402
multiprocessing_manager = multiprocessing.Manager()
1634
(str(server_settings[u"interface"])))
2403
1635
2404
1636
client_class = Client
2405
1637
if use_dbus:
2406
1638
client_class = functools.partial(ClientDBus, bus = bus)
2407
2408
client_settings = Client.config_parser(client_config)
2409
old_client_settings = {}
2410
clients_data = {}
2411
2412
# Get client data and settings from last running state.
2413
if server_settings["restore"]:
2414
try:
2415
with open(stored_state_path, "rb") as stored_state:
2416
clients_data, old_client_settings = (pickle.load
2417
(stored_state))
2418
os.remove(stored_state_path)
2419
except IOError as e:
2420
if e.errno == errno.ENOENT:
2421
logger.warning("Could not load persistent state: {0}"
2422
.format(os.strerror(e.errno)))
2423
else:
2424
logger.critical("Could not load persistent state:",
2425
exc_info=e)
2426
raise
2427
except EOFError as e:
2428
logger.warning("Could not load persistent state: "
2429
"EOFError:", exc_info=e)
2430
2431
with PGPEngine() as pgp:
2432
for client_name, client in clients_data.iteritems():
2433
# Decide which value to use after restoring saved state.
2434
# We have three different values: Old config file,
2435
# new config file, and saved state.
2436
# New config value takes precedence if it differs from old
2437
# config value, otherwise use saved state.
2438
for name, value in client_settings[client_name].items():
2439
try:
2440
# For each value in new config, check if it
2441
# differs from the old config value (Except for
2442
# the "secret" attribute)
2443
if (name != "secret" and
2444
value != old_client_settings[client_name]
2445
[name]):
2446
client[name] = value
2447
except KeyError:
2448
pass
2449
2450
# Clients who has passed its expire date can still be
2451
# enabled if its last checker was successful. Clients
2452
# whose checker succeeded before we stored its state is
2453
# assumed to have successfully run all checkers during
2454
# downtime.
2455
if client["enabled"]:
2456
if datetime.datetime.utcnow() >= client["expires"]:
2457
if not client["last_checked_ok"]:
2458
logger.warning(
2459
"disabling client {0} - Client never "
2460
"performed a successful checker"
2461
.format(client_name))
2462
client["enabled"] = False
2463
elif client["last_checker_status"] != 0:
2464
logger.warning(
2465
"disabling client {0} - Client "
2466
"last checker failed with error code {1}"
2467
.format(client_name,
2468
client["last_checker_status"]))
2469
client["enabled"] = False
2470
else:
2471
client["expires"] = (datetime.datetime
2472
.utcnow()
2473
+ client["timeout"])
2474
logger.debug("Last checker succeeded,"
2475
" keeping {0} enabled"
2476
.format(client_name))
2477
try:
2478
client["secret"] = (
2479
pgp.decrypt(client["encrypted_secret"],
2480
client_settings[client_name]
2481
["secret"]))
2482
except PGPError:
2483
# If decryption fails, we use secret from new settings
2484
logger.debug("Failed to decrypt {0} old secret"
2485
.format(client_name))
2486
client["secret"] = (
2487
client_settings[client_name]["secret"])
2488
2489
# Add/remove clients based on new changes made to config
2490
for client_name in (set(old_client_settings)
2491
- set(client_settings)):
2492
del clients_data[client_name]
2493
for client_name in (set(client_settings)
2494
- set(old_client_settings)):
2495
clients_data[client_name] = client_settings[client_name]
2496
2497
# Create all client objects
2498
for client_name, client in clients_data.iteritems():
2499
tcp_server.clients[client_name] = client_class(
2500
name = client_name, settings = client)
2501
1639
tcp_server.clients.update(set(
1640
client_class(name = section,
1641
config= dict(client_config.items(section)))
1642
for section in client_config.sections()))
2502
1643
if not tcp_server.clients:
2503
logger.warning("No clients defined")
2504
2505
if not foreground:
2506
if pidfile is not None:
2507
try:
2508
with pidfile:
2509
pid = os.getpid()
2510
pidfile.write(str(pid) + "\n".encode("utf-8"))
2511
except IOError:
2512
logger.error("Could not write to file %r with PID %d",
2513
pidfilename, pid)
1644
logger.warning(u"No clients defined")
1645
1646
if debug:
1647
# Redirect stdin so all checkers get /dev/null
1648
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1649
os.dup2(null, sys.stdin.fileno())
1650
if null > 2:
1651
os.close(null)
1652
else:
1653
# No console logging
1654
logger.removeHandler(console)
1655
# Close all input and output, do double fork, etc.
1656
daemon()
1657
1658
try:
1659
with pidfile:
1660
pid = os.getpid()
1661
pidfile.write(str(pid) + "\n")
2514
1662
del pidfile
2515
del pidfilename
1663
except IOError:
1664
logger.error(u"Could not write to file %r with PID %d",
1665
pidfilename, pid)
1666
except NameError:
1667
# "pidfile" was never created
1668
pass
1669
del pidfilename
2516
1670
1671
if not debug:
1672
signal.signal(signal.SIGINT, signal.SIG_IGN)
2517
1673
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2518
1674
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2519
1675
2520
1676
if use_dbus:
2521
@alternate_dbus_interfaces({"se.recompile.Mandos":
2522
"se.bsnet.fukt.Mandos"})
2523
class MandosDBusService(DBusObjectWithProperties):
1677
class MandosDBusService(dbus.service.Object):
2524
1678
"""A D-Bus proxy object"""
2525
1679
def __init__(self):
2526
dbus.service.Object.__init__(self, bus, "/")
2527
_interface = "se.recompile.Mandos"
2528
2529
@dbus_interface_annotations(_interface)
2530
def _foo(self):
2531
return { "org.freedesktop.DBus.Property"
2532
".EmitsChangedSignal":
2533
"false"}
2534
2535
@dbus.service.signal(_interface, signature="o")
1680
dbus.service.Object.__init__(self, bus, u"/")
1681
_interface = u"se.bsnet.fukt.Mandos"
1682
1683
@dbus.service.signal(_interface, signature=u"o")
2536
1684
def ClientAdded(self, objpath):
2537
1685
"D-Bus signal"
2538
1686
pass
2539
1687
2540
@dbus.service.signal(_interface, signature="ss")
1688
@dbus.service.signal(_interface, signature=u"ss")
2541
1689
def ClientNotFound(self, fingerprint, address):
2542
1690
"D-Bus signal"
2543
1691
pass
2544
1692
2545
@dbus.service.signal(_interface, signature="os")
1693
@dbus.service.signal(_interface, signature=u"os")
2546
1694
def ClientRemoved(self, objpath, name):
2547
1695
"D-Bus signal"
2548
1696
pass
2549
1697
2550
@dbus.service.method(_interface, out_signature="ao")
1698
@dbus.service.method(_interface, out_signature=u"ao")
2551
1699
def GetAllClients(self):
2552
1700
"D-Bus method"
2553
1701
return dbus.Array(c.dbus_object_path
2554
for c in
2555
tcp_server.clients.itervalues())
1702
for c in tcp_server.clients)
2556
1703
2557
1704
@dbus.service.method(_interface,
2558
out_signature="a{oa{sv}}")
1705
out_signature=u"a{oa{sv}}")
2559
1706
def GetAllClientsWithProperties(self):
2560
1707
"D-Bus method"
2561
1708
return dbus.Dictionary(
2562
((c.dbus_object_path, c.GetAll(""))
2563
for c in tcp_server.clients.itervalues()),
2564
signature="oa{sv}")
1709
((c.dbus_object_path, c.GetAll(u""))
1710
for c in tcp_server.clients),
1711
signature=u"oa{sv}")
2565
1712
2566
@dbus.service.method(_interface, in_signature="o")
1713
@dbus.service.method(_interface, in_signature=u"o")
2567
1714
def RemoveClient(self, object_path):
2568
1715
"D-Bus method"
2569
for c in tcp_server.clients.itervalues():
1716
for c in tcp_server.clients:
2570
1717
if c.dbus_object_path == object_path:
2571
del tcp_server.clients[c.name]
1718
tcp_server.clients.remove(c)
2572
1719
c.remove_from_connection()
2573
1720
# Don't signal anything except ClientRemoved
2574
1721
c.disable(quiet=True)
2585
1732
"Cleanup function; run on exit"
2586
1733
service.cleanup()
2587
1734
2588
multiprocessing.active_children()
2589
if not (tcp_server.clients or client_settings):
2590
return
2591
2592
# Store client before exiting. Secrets are encrypted with key
2593
# based on what config file has. If config file is
2594
# removed/edited, old secret will thus be unrecovable.
2595
clients = {}
2596
with PGPEngine() as pgp:
2597
for client in tcp_server.clients.itervalues():
2598
key = client_settings[client.name]["secret"]
2599
client.encrypted_secret = pgp.encrypt(client.secret,
2600
key)
2601
client_dict = {}
2602
2603
# A list of attributes that can not be pickled
2604
# + secret.
2605
exclude = set(("bus", "changedstate", "secret",
2606
"checker"))
2607
for name, typ in (inspect.getmembers
2608
(dbus.service.Object)):
2609
exclude.add(name)
2610
2611
client_dict["encrypted_secret"] = (client
2612
.encrypted_secret)
2613
for attr in client.client_structure:
2614
if attr not in exclude:
2615
client_dict[attr] = getattr(client, attr)
2616
2617
clients[client.name] = client_dict
2618
del client_settings[client.name]["secret"]
2619
2620
try:
2621
with (tempfile.NamedTemporaryFile
2622
(mode='wb', suffix=".pickle", prefix='clients-',
2623
dir=os.path.dirname(stored_state_path),
2624
delete=False)) as stored_state:
2625
pickle.dump((clients, client_settings), stored_state)
2626
tempname=stored_state.name
2627
os.rename(tempname, stored_state_path)
2628
except (IOError, OSError) as e:
2629
if not debug:
2630
try:
2631
os.remove(tempname)
2632
except NameError:
2633
pass
2634
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
2635
logger.warning("Could not save persistent state: {0}"
2636
.format(os.strerror(e.errno)))
2637
else:
2638
logger.warning("Could not save persistent state:",
2639
exc_info=e)
2640
raise e
2641
2642
# Delete all clients, and settings from config
2643
1735
while tcp_server.clients:
2644
name, client = tcp_server.clients.popitem()
1736
client = tcp_server.clients.pop()
2645
1737
if use_dbus:
2646
1738
client.remove_from_connection()
1739
client.disable_hook = None
2647
1740
# Don't signal anything except ClientRemoved
2648
1741
client.disable(quiet=True)
2649
1742
if use_dbus:
2650
1743
# Emit D-Bus signal
2651
mandos_dbus_service.ClientRemoved(client
2652
.dbus_object_path,
1744
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
2653
1745
client.name)
2654
client_settings.clear()
2655
1746
2656
1747
atexit.register(cleanup)
2657
1748
2658
for client in tcp_server.clients.itervalues():
1749
for client in tcp_server.clients:
2659
1750
if use_dbus:
2660
1751
# Emit D-Bus signal
2661
1752
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2662
# Need to initiate checking of clients
2663
if client.enabled:
2664
client.init_checker()
1753
client.enable()
2665
1754
2666
1755
tcp_server.enable()
2667
1756
tcp_server.server_activate()
2669
1758
# Find out what port we got
2670
1759
service.port = tcp_server.socket.getsockname()[1]
2671
1760
if use_ipv6:
2672
logger.info("Now listening on address %r, port %d,"
2673
" flowinfo %d, scope_id %d",
2674
*tcp_server.socket.getsockname())
1761
logger.info(u"Now listening on address %r, port %d,"
1762
" flowinfo %d, scope_id %d"
1763
% tcp_server.socket.getsockname())
2675
1764
else: # IPv4
2676
logger.info("Now listening on address %r, port %d",
2677
*tcp_server.socket.getsockname())
1765
logger.info(u"Now listening on address %r, port %d"
1766
% tcp_server.socket.getsockname())
2678
1767
2679
1768
#service.interface = tcp_server.socket.getsockname()[3]
2680
1769
2682
1771
# From the Avahi example code
2683
1772
try:
2684
1773
service.activate()
2685
except dbus.exceptions.DBusException as error:
2686
logger.critical("D-Bus Exception", exc_info=error)
1774
except dbus.exceptions.DBusException, error:
1775
logger.critical(u"DBusException: %s", error)
2687
1776
cleanup()
2688
1777
sys.exit(1)
2689
1778
# End of Avahi example code
2693
1782
(tcp_server.handle_request
2694
1783
(*args[2:], **kwargs) or True))
2695
1784
2696
logger.debug("Starting main loop")
1785
logger.debug(u"Starting main loop")
2697
1786
main_loop.run()
2698
except AvahiError as error:
2699
logger.critical("Avahi Error", exc_info=error)
1787
except AvahiError, error:
1788
logger.critical(u"AvahiError: %s", error)
2700
1789
cleanup()
2701
1790
sys.exit(1)
2702
1791
except KeyboardInterrupt:
2703
1792
if debug:
2704
print("", file=sys.stderr)
2705
logger.debug("Server received KeyboardInterrupt")
2706
logger.debug("Server exiting")
1793
print >> sys.stderr
1794
logger.debug(u"Server received KeyboardInterrupt")
1795
logger.debug(u"Server exiting")
2707
1796
# Must run before the D-Bus bus name gets deregistered
2708
1797
cleanup()
2709
1798
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0