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- Committer: Teddy Hogeborn
- Date: 2011-09-19 09:42:55 UTC
- Revision ID: teddy@fukt.bsnet.se-20110919094255-3lji3igz75uog8lh
* mandos-clients.conf.xml (OPTIONS): Moved up "extended_timeout" to
order options alphabetically.
* clients.conf: Language change in comment.
order options alphabetically.
* clients.conf: Language change in comment.
- files removed:
- debian/mandos-client.examples
- debian/upstream
- network-hooks.d
- plugin-helpers
- files modified:
- .bzrignore
added
removed
mandos
1
#!/usr/bin/python2.7
1
#!/usr/bin/python
2
2
# -*- mode: python; coding: utf-8 -*-
3
3
#
4
4
# Mandos server - give out binary blobs to connecting clients.
11
11
# "AvahiService" class, and some lines in "main".
12
12
#
13
13
# Everything else is
14
# Copyright © 2008-2015 Teddy Hogeborn
15
# Copyright © 2008-2015 Björn Påhlsson
14
# Copyright © 2008-2011 Teddy Hogeborn
15
# Copyright © 2008-2011 Björn Påhlsson
16
16
#
17
17
# This program is free software: you can redistribute it and/or modify
18
18
# it under the terms of the GNU General Public License as published by
28
28
# along with this program. If not, see
29
29
# <http://www.gnu.org/licenses/>.
30
30
#
31
# Contact the authors at <mandos@recompile.se>.
31
# Contact the authors at <mandos@fukt.bsnet.se>.
32
32
#
33
33
34
34
from __future__ import (division, absolute_import, print_function,
35
35
unicode_literals)
36
36
37
from future_builtins import *
38
39
try:
40
import SocketServer as socketserver
41
except ImportError:
42
import socketserver
37
import SocketServer as socketserver
43
38
import socket
44
39
import argparse
45
40
import datetime
50
45
import gnutls.library.functions
51
46
import gnutls.library.constants
52
47
import gnutls.library.types
53
try:
54
import ConfigParser as configparser
55
except ImportError:
56
import configparser
48
import ConfigParser as configparser
57
49
import sys
58
50
import re
59
51
import os
68
60
import struct
69
61
import fcntl
70
62
import functools
71
try:
72
import cPickle as pickle
73
except ImportError:
74
import pickle
63
import cPickle as pickle
75
64
import multiprocessing
76
import types
77
import binascii
78
import tempfile
79
import itertools
80
import collections
81
import codecs
82
65
83
66
import dbus
84
67
import dbus.service
85
try:
86
import gobject
87
except ImportError:
88
from gi.repository import GObject as gobject
68
import gobject
89
69
import avahi
90
70
from dbus.mainloop.glib import DBusGMainLoop
91
71
import ctypes
101
81
except ImportError:
102
82
SO_BINDTODEVICE = None
103
83
104
if sys.version_info.major == 2:
105
str = unicode
106
107
version = "1.6.9"
108
stored_state_file = "clients.pickle"
109
110
logger = logging.getLogger()
111
syslogger = None
112
113
try:
114
if_nametoindex = ctypes.cdll.LoadLibrary(
115
ctypes.util.find_library("c")).if_nametoindex
116
except (OSError, AttributeError):
117
118
def if_nametoindex(interface):
119
"Get an interface index the hard way, i.e. using fcntl()"
120
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
121
with contextlib.closing(socket.socket()) as s:
122
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
123
struct.pack(b"16s16x", interface))
124
interface_index = struct.unpack("I", ifreq[16:20])[0]
125
return interface_index
126
127
128
def initlogger(debug, level=logging.WARNING):
129
"""init logger and add loglevel"""
130
131
global syslogger
132
syslogger = (logging.handlers.SysLogHandler(
133
facility = logging.handlers.SysLogHandler.LOG_DAEMON,
134
address = "/dev/log"))
135
syslogger.setFormatter(logging.Formatter
136
('Mandos [%(process)d]: %(levelname)s:'
137
' %(message)s'))
138
logger.addHandler(syslogger)
139
140
if debug:
141
console = logging.StreamHandler()
142
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
143
' [%(process)d]:'
144
' %(levelname)s:'
145
' %(message)s'))
146
logger.addHandler(console)
147
logger.setLevel(level)
148
149
150
class PGPError(Exception):
151
"""Exception if encryption/decryption fails"""
152
pass
153
154
155
class PGPEngine(object):
156
"""A simple class for OpenPGP symmetric encryption & decryption"""
157
158
def __init__(self):
159
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
160
self.gnupgargs = ['--batch',
161
'--home', self.tempdir,
162
'--force-mdc',
163
'--quiet',
164
'--no-use-agent']
165
166
def __enter__(self):
167
return self
168
169
def __exit__(self, exc_type, exc_value, traceback):
170
self._cleanup()
171
return False
172
173
def __del__(self):
174
self._cleanup()
175
176
def _cleanup(self):
177
if self.tempdir is not None:
178
# Delete contents of tempdir
179
for root, dirs, files in os.walk(self.tempdir,
180
topdown = False):
181
for filename in files:
182
os.remove(os.path.join(root, filename))
183
for dirname in dirs:
184
os.rmdir(os.path.join(root, dirname))
185
# Remove tempdir
186
os.rmdir(self.tempdir)
187
self.tempdir = None
188
189
def password_encode(self, password):
190
# Passphrase can not be empty and can not contain newlines or
191
# NUL bytes. So we prefix it and hex encode it.
192
encoded = b"mandos" + binascii.hexlify(password)
193
if len(encoded) > 2048:
194
# GnuPG can't handle long passwords, so encode differently
195
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
196
.replace(b"\n", b"\\n")
197
.replace(b"\0", b"\\x00"))
198
return encoded
199
200
def encrypt(self, data, password):
201
passphrase = self.password_encode(password)
202
with tempfile.NamedTemporaryFile(
203
dir=self.tempdir) as passfile:
204
passfile.write(passphrase)
205
passfile.flush()
206
proc = subprocess.Popen(['gpg', '--symmetric',
207
'--passphrase-file',
208
passfile.name]
209
+ self.gnupgargs,
210
stdin = subprocess.PIPE,
211
stdout = subprocess.PIPE,
212
stderr = subprocess.PIPE)
213
ciphertext, err = proc.communicate(input = data)
214
if proc.returncode != 0:
215
raise PGPError(err)
216
return ciphertext
217
218
def decrypt(self, data, password):
219
passphrase = self.password_encode(password)
220
with tempfile.NamedTemporaryFile(
221
dir = self.tempdir) as passfile:
222
passfile.write(passphrase)
223
passfile.flush()
224
proc = subprocess.Popen(['gpg', '--decrypt',
225
'--passphrase-file',
226
passfile.name]
227
+ self.gnupgargs,
228
stdin = subprocess.PIPE,
229
stdout = subprocess.PIPE,
230
stderr = subprocess.PIPE)
231
decrypted_plaintext, err = proc.communicate(input = data)
232
if proc.returncode != 0:
233
raise PGPError(err)
234
return decrypted_plaintext
235
84
85
version = "1.3.1"
86
87
#logger = logging.getLogger('mandos')
88
logger = logging.Logger('mandos')
89
syslogger = (logging.handlers.SysLogHandler
90
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
91
address = str("/dev/log")))
92
syslogger.setFormatter(logging.Formatter
93
('Mandos [%(process)d]: %(levelname)s:'
94
' %(message)s'))
95
logger.addHandler(syslogger)
96
97
console = logging.StreamHandler()
98
console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'
99
' %(levelname)s:'
100
' %(message)s'))
101
logger.addHandler(console)
236
102
237
103
class AvahiError(Exception):
238
104
def __init__(self, value, *args, **kwargs):
239
105
self.value = value
240
return super(AvahiError, self).__init__(value, *args,
241
**kwargs)
242
106
super(AvahiError, self).__init__(value, *args, **kwargs)
107
def __unicode__(self):
108
return unicode(repr(self.value))
243
109
244
110
class AvahiServiceError(AvahiError):
245
111
pass
246
112
247
248
113
class AvahiGroupError(AvahiError):
249
114
pass
250
115
257
122
Used to optionally bind to the specified interface.
258
123
name: string; Example: 'Mandos'
259
124
type: string; Example: '_mandos._tcp'.
260
See <https://www.iana.org/assignments/service-names-port-numbers>
125
See <http://www.dns-sd.org/ServiceTypes.html>
261
126
port: integer; what port to announce
262
127
TXT: list of strings; TXT record for the service
263
128
domain: string; Domain to publish on, default to .local if empty.
269
134
server: D-Bus Server
270
135
bus: dbus.SystemBus()
271
136
"""
272
273
def __init__(self,
274
interface = avahi.IF_UNSPEC,
275
name = None,
276
servicetype = None,
277
port = None,
278
TXT = None,
279
domain = "",
280
host = "",
281
max_renames = 32768,
282
protocol = avahi.PROTO_UNSPEC,
283
bus = None):
137
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
138
servicetype = None, port = None, TXT = None,
139
domain = "", host = "", max_renames = 32768,
140
protocol = avahi.PROTO_UNSPEC, bus = None):
284
141
self.interface = interface
285
142
self.name = name
286
143
self.type = servicetype
295
152
self.server = None
296
153
self.bus = bus
297
154
self.entry_group_state_changed_match = None
298
299
def rename(self, remove=True):
155
def rename(self):
300
156
"""Derived from the Avahi example code"""
301
157
if self.rename_count >= self.max_renames:
302
158
logger.critical("No suitable Zeroconf service name found"
303
159
" after %i retries, exiting.",
304
160
self.rename_count)
305
161
raise AvahiServiceError("Too many renames")
306
self.name = str(
307
self.server.GetAlternativeServiceName(self.name))
308
self.rename_count += 1
162
self.name = unicode(self.server.GetAlternativeServiceName(self.name))
309
163
logger.info("Changing Zeroconf service name to %r ...",
310
164
self.name)
311
if remove:
312
self.remove()
165
syslogger.setFormatter(logging.Formatter
166
('Mandos (%s) [%%(process)d]:'
167
' %%(levelname)s: %%(message)s'
168
% self.name))
169
self.remove()
313
170
try:
314
171
self.add()
315
172
except dbus.exceptions.DBusException as error:
316
if (error.get_dbus_name()
317
== "org.freedesktop.Avahi.CollisionError"):
318
logger.info("Local Zeroconf service name collision.")
319
return self.rename(remove=False)
320
else:
321
logger.critical("D-Bus Exception", exc_info=error)
322
self.cleanup()
323
os._exit(1)
324
173
logger.critical("DBusException: %s", error)
174
self.cleanup()
175
os._exit(1)
176
self.rename_count += 1
325
177
def remove(self):
326
178
"""Derived from the Avahi example code"""
327
179
if self.entry_group_state_changed_match is not None:
329
181
self.entry_group_state_changed_match = None
330
182
if self.group is not None:
331
183
self.group.Reset()
332
333
184
def add(self):
334
185
"""Derived from the Avahi example code"""
335
186
self.remove()
340
191
avahi.DBUS_INTERFACE_ENTRY_GROUP)
341
192
self.entry_group_state_changed_match = (
342
193
self.group.connect_to_signal(
343
'StateChanged', self.entry_group_state_changed))
194
'StateChanged', self .entry_group_state_changed))
344
195
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
345
196
self.name, self.type)
346
197
self.group.AddService(
352
203
dbus.UInt16(self.port),
353
204
avahi.string_array_to_txt_array(self.TXT))
354
205
self.group.Commit()
355
356
206
def entry_group_state_changed(self, state, error):
357
207
"""Derived from the Avahi example code"""
358
208
logger.debug("Avahi entry group state change: %i", state)
364
214
self.rename()
365
215
elif state == avahi.ENTRY_GROUP_FAILURE:
366
216
logger.critical("Avahi: Error in group state changed %s",
367
str(error))
368
raise AvahiGroupError("State changed: {!s}".format(error))
369
217
unicode(error))
218
raise AvahiGroupError("State changed: %s"
219
% unicode(error))
370
220
def cleanup(self):
371
221
"""Derived from the Avahi example code"""
372
222
if self.group is not None:
373
223
try:
374
224
self.group.Free()
375
225
except (dbus.exceptions.UnknownMethodException,
376
dbus.exceptions.DBusException):
226
dbus.exceptions.DBusException) as e:
377
227
pass
378
228
self.group = None
379
229
self.remove()
380
381
230
def server_state_changed(self, state, error=None):
382
231
"""Derived from the Avahi example code"""
383
232
logger.debug("Avahi server state change: %i", state)
384
bad_states = {
385
avahi.SERVER_INVALID: "Zeroconf server invalid",
386
avahi.SERVER_REGISTERING: None,
387
avahi.SERVER_COLLISION: "Zeroconf server name collision",
388
avahi.SERVER_FAILURE: "Zeroconf server failure",
389
}
233
bad_states = { avahi.SERVER_INVALID:
234
"Zeroconf server invalid",
235
avahi.SERVER_REGISTERING: None,
236
avahi.SERVER_COLLISION:
237
"Zeroconf server name collision",
238
avahi.SERVER_FAILURE:
239
"Zeroconf server failure" }
390
240
if state in bad_states:
391
241
if bad_states[state] is not None:
392
242
if error is None:
395
245
logger.error(bad_states[state] + ": %r", error)
396
246
self.cleanup()
397
247
elif state == avahi.SERVER_RUNNING:
398
try:
399
self.add()
400
except dbus.exceptions.DBusException as error:
401
if (error.get_dbus_name()
402
== "org.freedesktop.Avahi.CollisionError"):
403
logger.info("Local Zeroconf service name"
404
" collision.")
405
return self.rename(remove=False)
406
else:
407
logger.critical("D-Bus Exception", exc_info=error)
408
self.cleanup()
409
os._exit(1)
248
self.add()
410
249
else:
411
250
if error is None:
412
251
logger.debug("Unknown state: %r", state)
413
252
else:
414
253
logger.debug("Unknown state: %r: %r", state, error)
415
416
254
def activate(self):
417
255
"""Derived from the Avahi example code"""
418
256
if self.server is None:
422
260
follow_name_owner_changes=True),
423
261
avahi.DBUS_INTERFACE_SERVER)
424
262
self.server.connect_to_signal("StateChanged",
425
self.server_state_changed)
263
self.server_state_changed)
426
264
self.server_state_changed(self.server.GetState())
427
265
428
266
429
class AvahiServiceToSyslog(AvahiService):
430
def rename(self, *args, **kwargs):
431
"""Add the new name to the syslog messages"""
432
ret = AvahiService.rename(self, *args, **kwargs)
433
syslogger.setFormatter(logging.Formatter(
434
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
435
.format(self.name)))
436
return ret
437
438
def call_pipe(connection, # : multiprocessing.Connection
439
func, *args, **kwargs):
440
"""This function is meant to be called by multiprocessing.Process
441
442
This function runs func(*args, **kwargs), and writes the resulting
443
return value on the provided multiprocessing.Connection.
444
"""
445
connection.send(func(*args, **kwargs))
446
connection.close()
447
448
267
class Client(object):
449
268
"""A representation of a client host served by this server.
450
269
451
270
Attributes:
452
approved: bool(); 'None' if not yet approved/disapproved
271
_approved: bool(); 'None' if not yet approved/disapproved
453
272
approval_delay: datetime.timedelta(); Time to wait for approval
454
273
approval_duration: datetime.timedelta(); Duration of one approval
455
274
checker: subprocess.Popen(); a running checker process used
462
281
instance %(name)s can be used in the command.
463
282
checker_initiator_tag: a gobject event source tag, or None
464
283
created: datetime.datetime(); (UTC) object creation
465
client_structure: Object describing what attributes a client has
466
and is used for storing the client at exit
467
284
current_checker_command: string; current running checker_command
285
disable_hook: If set, called by disable() as disable_hook(self)
468
286
disable_initiator_tag: a gobject event source tag, or None
469
287
enabled: bool()
470
288
fingerprint: string (40 or 32 hexadecimal digits); used to
473
291
interval: datetime.timedelta(); How often to start a new checker
474
292
last_approval_request: datetime.datetime(); (UTC) or None
475
293
last_checked_ok: datetime.datetime(); (UTC) or None
476
last_checker_status: integer between 0 and 255 reflecting exit
477
status of last checker. -1 reflects crashed
478
checker, -2 means no checker completed yet.
479
last_checker_signal: The signal which killed the last checker, if
480
last_checker_status is -1
481
last_enabled: datetime.datetime(); (UTC) or None
294
last_enabled: datetime.datetime(); (UTC)
482
295
name: string; from the config file, used in log messages and
483
296
D-Bus identifiers
484
297
secret: bytestring; sent verbatim (over TLS) to client
485
298
timeout: datetime.timedelta(); How long from last_checked_ok
486
299
until this client is disabled
487
extended_timeout: extra long timeout when secret has been sent
300
extended_timeout: extra long timeout when password has been sent
488
301
runtime_expansions: Allowed attributes for runtime expansion.
489
302
expires: datetime.datetime(); time (UTC) when a client will be
490
303
disabled, or None
491
server_settings: The server_settings dict from main()
492
304
"""
493
305
494
306
runtime_expansions = ("approval_delay", "approval_duration",
495
"created", "enabled", "expires",
496
"fingerprint", "host", "interval",
497
"last_approval_request", "last_checked_ok",
307
"created", "enabled", "fingerprint",
308
"host", "interval", "last_checked_ok",
498
309
"last_enabled", "name", "timeout")
499
client_defaults = {
500
"timeout": "PT5M",
501
"extended_timeout": "PT15M",
502
"interval": "PT2M",
503
"checker": "fping -q -- %%(host)s",
504
"host": "",
505
"approval_delay": "PT0S",
506
"approval_duration": "PT1S",
507
"approved_by_default": "True",
508
"enabled": "True",
509
}
510
310
511
311
@staticmethod
512
def config_parser(config):
513
"""Construct a new dict of client settings of this form:
514
{ client_name: {setting_name: value, ...}, ...}
515
with exceptions for any special settings as defined above.
516
NOTE: Must be a pure function. Must return the same result
517
value given the same arguments.
518
"""
519
settings = {}
520
for client_name in config.sections():
521
section = dict(config.items(client_name))
522
client = settings[client_name] = {}
523
524
client["host"] = section["host"]
525
# Reformat values from string types to Python types
526
client["approved_by_default"] = config.getboolean(
527
client_name, "approved_by_default")
528
client["enabled"] = config.getboolean(client_name,
529
"enabled")
530
531
# Uppercase and remove spaces from fingerprint for later
532
# comparison purposes with return value from the
533
# fingerprint() function
534
client["fingerprint"] = (section["fingerprint"].upper()
535
.replace(" ", ""))
536
if "secret" in section:
537
client["secret"] = section["secret"].decode("base64")
538
elif "secfile" in section:
539
with open(os.path.expanduser(os.path.expandvars
540
(section["secfile"])),
541
"rb") as secfile:
542
client["secret"] = secfile.read()
543
else:
544
raise TypeError("No secret or secfile for section {}"
545
.format(section))
546
client["timeout"] = string_to_delta(section["timeout"])
547
client["extended_timeout"] = string_to_delta(
548
section["extended_timeout"])
549
client["interval"] = string_to_delta(section["interval"])
550
client["approval_delay"] = string_to_delta(
551
section["approval_delay"])
552
client["approval_duration"] = string_to_delta(
553
section["approval_duration"])
554
client["checker_command"] = section["checker"]
555
client["last_approval_request"] = None
556
client["last_checked_ok"] = None
557
client["last_checker_status"] = -2
558
559
return settings
560
561
def __init__(self, settings, name = None, server_settings=None):
312
def _timedelta_to_milliseconds(td):
313
"Convert a datetime.timedelta() to milliseconds"
314
return ((td.days * 24 * 60 * 60 * 1000)
315
+ (td.seconds * 1000)
316
+ (td.microseconds // 1000))
317
318
def timeout_milliseconds(self):
319
"Return the 'timeout' attribute in milliseconds"
320
return self._timedelta_to_milliseconds(self.timeout)
321
322
def extended_timeout_milliseconds(self):
323
"Return the 'extended_timeout' attribute in milliseconds"
324
return self._timedelta_to_milliseconds(self.extended_timeout)
325
326
def interval_milliseconds(self):
327
"Return the 'interval' attribute in milliseconds"
328
return self._timedelta_to_milliseconds(self.interval)
329
330
def approval_delay_milliseconds(self):
331
return self._timedelta_to_milliseconds(self.approval_delay)
332
333
def __init__(self, name = None, disable_hook=None, config=None):
334
"""Note: the 'checker' key in 'config' sets the
335
'checker_command' attribute and *not* the 'checker'
336
attribute."""
562
337
self.name = name
563
if server_settings is None:
564
server_settings = {}
565
self.server_settings = server_settings
566
# adding all client settings
567
for setting, value in settings.items():
568
setattr(self, setting, value)
569
570
if self.enabled:
571
if not hasattr(self, "last_enabled"):
572
self.last_enabled = datetime.datetime.utcnow()
573
if not hasattr(self, "expires"):
574
self.expires = (datetime.datetime.utcnow()
575
+ self.timeout)
576
else:
577
self.last_enabled = None
578
self.expires = None
579
338
if config is None:
339
config = {}
580
340
logger.debug("Creating client %r", self.name)
341
# Uppercase and remove spaces from fingerprint for later
342
# comparison purposes with return value from the fingerprint()
343
# function
344
self.fingerprint = (config["fingerprint"].upper()
345
.replace(" ", ""))
581
346
logger.debug(" Fingerprint: %s", self.fingerprint)
582
self.created = settings.get("created",
583
datetime.datetime.utcnow())
584
585
# attributes specific for this server instance
347
if "secret" in config:
348
self.secret = config["secret"].decode("base64")
349
elif "secfile" in config:
350
with open(os.path.expanduser(os.path.expandvars
351
(config["secfile"])),
352
"rb") as secfile:
353
self.secret = secfile.read()
354
else:
355
raise TypeError("No secret or secfile for client %s"
356
% self.name)
357
self.host = config.get("host", "")
358
self.created = datetime.datetime.utcnow()
359
self.enabled = False
360
self.last_approval_request = None
361
self.last_enabled = None
362
self.last_checked_ok = None
363
self.timeout = string_to_delta(config["timeout"])
364
self.extended_timeout = string_to_delta(config["extended_timeout"])
365
self.interval = string_to_delta(config["interval"])
366
self.disable_hook = disable_hook
586
367
self.checker = None
587
368
self.checker_initiator_tag = None
588
369
self.disable_initiator_tag = None
370
self.expires = None
589
371
self.checker_callback_tag = None
372
self.checker_command = config["checker"]
590
373
self.current_checker_command = None
591
self.approved = None
374
self.last_connect = None
375
self._approved = None
376
self.approved_by_default = config.get("approved_by_default",
377
True)
592
378
self.approvals_pending = 0
593
self.changedstate = multiprocessing_manager.Condition(
594
multiprocessing_manager.Lock())
595
self.client_structure = [attr
596
for attr in self.__dict__.iterkeys()
597
if not attr.startswith("_")]
598
self.client_structure.append("client_structure")
599
600
for name, t in inspect.getmembers(
601
type(self), lambda obj: isinstance(obj, property)):
602
if not name.startswith("_"):
603
self.client_structure.append(name)
379
self.approval_delay = string_to_delta(
380
config["approval_delay"])
381
self.approval_duration = string_to_delta(
382
config["approval_duration"])
383
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
604
384
605
# Send notice to process children that client state has changed
606
385
def send_changedstate(self):
607
with self.changedstate:
608
self.changedstate.notify_all()
609
386
self.changedstate.acquire()
387
self.changedstate.notify_all()
388
self.changedstate.release()
389
610
390
def enable(self):
611
391
"""Start this client's checker and timeout hooks"""
612
392
if getattr(self, "enabled", False):
613
393
# Already enabled
614
394
return
395
self.send_changedstate()
396
self.last_enabled = datetime.datetime.utcnow()
397
# Schedule a new checker to be started an 'interval' from now,
398
# and every interval from then on.
399
self.checker_initiator_tag = (gobject.timeout_add
400
(self.interval_milliseconds(),
401
self.start_checker))
402
# Schedule a disable() when 'timeout' has passed
615
403
self.expires = datetime.datetime.utcnow() + self.timeout
404
self.disable_initiator_tag = (gobject.timeout_add
405
(self.timeout_milliseconds(),
406
self.disable))
616
407
self.enabled = True
617
self.last_enabled = datetime.datetime.utcnow()
618
self.init_checker()
619
self.send_changedstate()
408
# Also start a new checker *right now*.
409
self.start_checker()
620
410
621
411
def disable(self, quiet=True):
622
412
"""Disable this client."""
623
413
if not getattr(self, "enabled", False):
624
414
return False
625
415
if not quiet:
416
self.send_changedstate()
417
if not quiet:
626
418
logger.info("Disabling client %s", self.name)
627
if getattr(self, "disable_initiator_tag", None) is not None:
419
if getattr(self, "disable_initiator_tag", False):
628
420
gobject.source_remove(self.disable_initiator_tag)
629
421
self.disable_initiator_tag = None
630
422
self.expires = None
631
if getattr(self, "checker_initiator_tag", None) is not None:
423
if getattr(self, "checker_initiator_tag", False):
632
424
gobject.source_remove(self.checker_initiator_tag)
633
425
self.checker_initiator_tag = None
634
426
self.stop_checker()
427
if self.disable_hook:
428
self.disable_hook(self)
635
429
self.enabled = False
636
if not quiet:
637
self.send_changedstate()
638
430
# Do not run this again if called by a gobject.timeout_add
639
431
return False
640
432
641
433
def __del__(self):
434
self.disable_hook = None
642
435
self.disable()
643
436
644
def init_checker(self):
645
# Schedule a new checker to be started an 'interval' from now,
646
# and every interval from then on.
647
if self.checker_initiator_tag is not None:
648
gobject.source_remove(self.checker_initiator_tag)
649
self.checker_initiator_tag = gobject.timeout_add(
650
int(self.interval.total_seconds() * 1000),
651
self.start_checker)
652
# Schedule a disable() when 'timeout' has passed
653
if self.disable_initiator_tag is not None:
654
gobject.source_remove(self.disable_initiator_tag)
655
self.disable_initiator_tag = gobject.timeout_add(
656
int(self.timeout.total_seconds() * 1000), self.disable)
657
# Also start a new checker *right now*.
658
self.start_checker()
659
660
def checker_callback(self, source, condition, connection,
661
command):
437
def checker_callback(self, pid, condition, command):
662
438
"""The checker has completed, so take appropriate actions."""
663
439
self.checker_callback_tag = None
664
440
self.checker = None
665
# Read return code from connection (see call_pipe)
666
returncode = connection.recv()
667
connection.close()
668
669
if returncode >= 0:
670
self.last_checker_status = returncode
671
self.last_checker_signal = None
672
if self.last_checker_status == 0:
441
if os.WIFEXITED(condition):
442
exitstatus = os.WEXITSTATUS(condition)
443
if exitstatus == 0:
673
444
logger.info("Checker for %(name)s succeeded",
674
445
vars(self))
675
446
self.checked_ok()
676
447
else:
677
logger.info("Checker for %(name)s failed", vars(self))
448
logger.info("Checker for %(name)s failed",
449
vars(self))
678
450
else:
679
self.last_checker_status = -1
680
self.last_checker_signal = -returncode
681
451
logger.warning("Checker for %(name)s crashed?",
682
452
vars(self))
683
return False
684
685
def checked_ok(self):
686
"""Assert that the client has been seen, alive and well."""
687
self.last_checked_ok = datetime.datetime.utcnow()
688
self.last_checker_status = 0
689
self.last_checker_signal = None
690
self.bump_timeout()
691
692
def bump_timeout(self, timeout=None):
693
"""Bump up the timeout for this client."""
453
454
def checked_ok(self, timeout=None):
455
"""Bump up the timeout for this client.
456
457
This should only be called when the client has been seen,
458
alive and well.
459
"""
694
460
if timeout is None:
695
461
timeout = self.timeout
696
if self.disable_initiator_tag is not None:
697
gobject.source_remove(self.disable_initiator_tag)
698
self.disable_initiator_tag = None
699
if getattr(self, "enabled", False):
700
self.disable_initiator_tag = gobject.timeout_add(
701
int(timeout.total_seconds() * 1000), self.disable)
702
self.expires = datetime.datetime.utcnow() + timeout
462
self.last_checked_ok = datetime.datetime.utcnow()
463
gobject.source_remove(self.disable_initiator_tag)
464
self.expires = datetime.datetime.utcnow() + timeout
465
self.disable_initiator_tag = (gobject.timeout_add
466
(self._timedelta_to_milliseconds(timeout),
467
self.disable))
703
468
704
469
def need_approval(self):
705
470
self.last_approval_request = datetime.datetime.utcnow()
710
475
If a checker already exists, leave it running and do
711
476
nothing."""
712
477
# The reason for not killing a running checker is that if we
713
# did that, and if a checker (for some reason) started running
714
# slowly and taking more than 'interval' time, then the client
715
# would inevitably timeout, since no checker would get a
716
# chance to run to completion. If we instead leave running
478
# did that, then if a checker (for some reason) started
479
# running slowly and taking more than 'interval' time, the
480
# client would inevitably timeout, since no checker would get
481
# a chance to run to completion. If we instead leave running
717
482
# checkers alone, the checker would have to take more time
718
483
# than 'timeout' for the client to be disabled, which is as it
719
484
# should be.
720
485
721
if self.checker is not None and not self.checker.is_alive():
722
logger.warning("Checker was not alive; joining")
723
self.checker.join()
724
self.checker = None
486
# If a checker exists, make sure it is not a zombie
487
try:
488
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
489
except (AttributeError, OSError) as error:
490
if (isinstance(error, OSError)
491
and error.errno != errno.ECHILD):
492
raise error
493
else:
494
if pid:
495
logger.warning("Checker was a zombie")
496
gobject.source_remove(self.checker_callback_tag)
497
self.checker_callback(pid, status,
498
self.current_checker_command)
725
499
# Start a new checker if needed
726
500
if self.checker is None:
727
# Escape attributes for the shell
728
escaped_attrs = {
729
attr: re.escape(str(getattr(self, attr)))
730
for attr in self.runtime_expansions }
731
501
try:
732
command = self.checker_command % escaped_attrs
733
except TypeError as error:
734
logger.error('Could not format string "%s"',
735
self.checker_command,
736
exc_info=error)
737
return True # Try again later
502
# In case checker_command has exactly one % operator
503
command = self.checker_command % self.host
504
except TypeError:
505
# Escape attributes for the shell
506
escaped_attrs = dict(
507
(attr,
508
re.escape(unicode(str(getattr(self, attr, "")),
509
errors=
510
'replace')))
511
for attr in
512
self.runtime_expansions)
513
514
try:
515
command = self.checker_command % escaped_attrs
516
except TypeError as error:
517
logger.error('Could not format string "%s":'
518
' %s', self.checker_command, error)
519
return True # Try again later
738
520
self.current_checker_command = command
739
logger.info("Starting checker %r for %s", command,
740
self.name)
741
# We don't need to redirect stdout and stderr, since
742
# in normal mode, that is already done by daemon(),
743
# and in debug mode we don't want to. (Stdin is
744
# always replaced by /dev/null.)
745
# The exception is when not debugging but nevertheless
746
# running in the foreground; use the previously
747
# created wnull.
748
popen_args = { "close_fds": True,
749
"shell": True,
750
"cwd": "/" }
751
if (not self.server_settings["debug"]
752
and self.server_settings["foreground"]):
753
popen_args.update({"stdout": wnull,
754
"stderr": wnull })
755
pipe = multiprocessing.Pipe(duplex = False)
756
self.checker = multiprocessing.Process(
757
target = call_pipe,
758
args = (pipe[1], subprocess.call, command),
759
kwargs = popen_args)
760
self.checker.start()
761
self.checker_callback_tag = gobject.io_add_watch(
762
pipe[0].fileno(), gobject.IO_IN,
763
self.checker_callback, pipe[0], command)
521
try:
522
logger.info("Starting checker %r for %s",
523
command, self.name)
524
# We don't need to redirect stdout and stderr, since
525
# in normal mode, that is already done by daemon(),
526
# and in debug mode we don't want to. (Stdin is
527
# always replaced by /dev/null.)
528
self.checker = subprocess.Popen(command,
529
close_fds=True,
530
shell=True, cwd="/")
531
self.checker_callback_tag = (gobject.child_watch_add
532
(self.checker.pid,
533
self.checker_callback,
534
data=command))
535
# The checker may have completed before the gobject
536
# watch was added. Check for this.
537
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
538
if pid:
539
gobject.source_remove(self.checker_callback_tag)
540
self.checker_callback(pid, status, command)
541
except OSError as error:
542
logger.error("Failed to start subprocess: %s",
543
error)
764
544
# Re-run this periodically if run by gobject.timeout_add
765
545
return True
766
546
772
552
if getattr(self, "checker", None) is None:
773
553
return
774
554
logger.debug("Stopping checker for %(name)s", vars(self))
775
self.checker.terminate()
555
try:
556
os.kill(self.checker.pid, signal.SIGTERM)
557
#time.sleep(0.5)
558
#if self.checker.poll() is None:
559
# os.kill(self.checker.pid, signal.SIGKILL)
560
except OSError as error:
561
if error.errno != errno.ESRCH: # No such process
562
raise
776
563
self.checker = None
777
564
778
779
def dbus_service_property(dbus_interface,
780
signature="v",
781
access="readwrite",
782
byte_arrays=False):
565
def dbus_service_property(dbus_interface, signature="v",
566
access="readwrite", byte_arrays=False):
783
567
"""Decorators for marking methods of a DBusObjectWithProperties to
784
568
become properties on the D-Bus.
785
569
794
578
# "Set" method, so we fail early here:
795
579
if byte_arrays and signature != "ay":
796
580
raise ValueError("Byte arrays not supported for non-'ay'"
797
" signature {!r}".format(signature))
798
581
" signature %r" % signature)
799
582
def decorator(func):
800
583
func._dbus_is_property = True
801
584
func._dbus_interface = dbus_interface
806
589
func._dbus_name = func._dbus_name[:-14]
807
590
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
808
591
return func
809
810
return decorator
811
812
813
def dbus_interface_annotations(dbus_interface):
814
"""Decorator for marking functions returning interface annotations
815
816
Usage:
817
818
@dbus_interface_annotations("org.example.Interface")
819
def _foo(self): # Function name does not matter
820
return {"org.freedesktop.DBus.Deprecated": "true",
821
"org.freedesktop.DBus.Property.EmitsChangedSignal":
822
"false"}
823
"""
824
825
def decorator(func):
826
func._dbus_is_interface = True
827
func._dbus_interface = dbus_interface
828
func._dbus_name = dbus_interface
829
return func
830
831
return decorator
832
833
834
def dbus_annotations(annotations):
835
"""Decorator to annotate D-Bus methods, signals or properties
836
Usage:
837
838
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
839
"org.freedesktop.DBus.Property."
840
"EmitsChangedSignal": "false"})
841
@dbus_service_property("org.example.Interface", signature="b",
842
access="r")
843
def Property_dbus_property(self):
844
return dbus.Boolean(False)
845
"""
846
847
def decorator(func):
848
func._dbus_annotations = annotations
849
return func
850
851
592
return decorator
852
593
853
594
854
595
class DBusPropertyException(dbus.exceptions.DBusException):
855
596
"""A base class for D-Bus property-related exceptions
856
597
"""
857
pass
598
def __unicode__(self):
599
return unicode(str(self))
858
600
859
601
860
602
class DBusPropertyAccessException(DBusPropertyException):
871
613
872
614
class DBusObjectWithProperties(dbus.service.Object):
873
615
"""A D-Bus object with properties.
874
616
875
617
Classes inheriting from this can use the dbus_service_property
876
618
decorator to expose methods as D-Bus properties. It exposes the
877
619
standard Get(), Set(), and GetAll() methods on the D-Bus.
878
620
"""
879
621
880
622
@staticmethod
881
def _is_dbus_thing(thing):
882
"""Returns a function testing if an attribute is a D-Bus thing
883
884
If called like _is_dbus_thing("method") it returns a function
885
suitable for use as predicate to inspect.getmembers().
886
"""
887
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
888
False)
623
def _is_dbus_property(obj):
624
return getattr(obj, "_dbus_is_property", False)
889
625
890
def _get_all_dbus_things(self, thing):
626
def _get_all_dbus_properties(self):
891
627
"""Returns a generator of (name, attribute) pairs
892
628
"""
893
return ((getattr(athing.__get__(self), "_dbus_name", name),
894
athing.__get__(self))
895
for cls in self.__class__.__mro__
896
for name, athing in
897
inspect.getmembers(cls, self._is_dbus_thing(thing)))
629
return ((prop._dbus_name, prop)
630
for name, prop in
631
inspect.getmembers(self, self._is_dbus_property))
898
632
899
633
def _get_dbus_property(self, interface_name, property_name):
900
634
"""Returns a bound method if one exists which is a D-Bus
901
635
property with the specified name and interface.
902
636
"""
903
for cls in self.__class__.__mro__:
904
for name, value in inspect.getmembers(
905
cls, self._is_dbus_thing("property")):
906
if (value._dbus_name == property_name
907
and value._dbus_interface == interface_name):
908
return value.__get__(self)
909
637
for name in (property_name,
638
property_name + "_dbus_property"):
639
prop = getattr(self, name, None)
640
if (prop is None
641
or not self._is_dbus_property(prop)
642
or prop._dbus_name != property_name
643
or (interface_name and prop._dbus_interface
644
and interface_name != prop._dbus_interface)):
645
continue
646
return prop
910
647
# No such property
911
raise DBusPropertyNotFound("{}:{}.{}".format(
912
self.dbus_object_path, interface_name, property_name))
648
raise DBusPropertyNotFound(self.dbus_object_path + ":"
649
+ interface_name + "."
650
+ property_name)
913
651
914
@dbus.service.method(dbus.PROPERTIES_IFACE,
915
in_signature="ss",
652
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
916
653
out_signature="v")
917
654
def Get(self, interface_name, property_name):
918
655
"""Standard D-Bus property Get() method, see D-Bus standard.
936
673
# The byte_arrays option is not supported yet on
937
674
# signatures other than "ay".
938
675
if prop._dbus_signature != "ay":
939
raise ValueError("Byte arrays not supported for non-"
940
"'ay' signature {!r}"
941
.format(prop._dbus_signature))
942
value = dbus.ByteArray(b''.join(chr(byte)
943
for byte in value))
676
raise ValueError
677
value = dbus.ByteArray(''.join(unichr(byte)
678
for byte in value))
944
679
prop(value)
945
680
946
@dbus.service.method(dbus.PROPERTIES_IFACE,
947
in_signature="s",
681
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
948
682
out_signature="a{sv}")
949
683
def GetAll(self, interface_name):
950
684
"""Standard D-Bus property GetAll() method, see D-Bus
951
685
standard.
952
686
953
687
Note: Will not include properties with access="write".
954
688
"""
955
properties = {}
956
for name, prop in self._get_all_dbus_things("property"):
689
all = {}
690
for name, prop in self._get_all_dbus_properties():
957
691
if (interface_name
958
692
and interface_name != prop._dbus_interface):
959
693
# Interface non-empty but did not match
963
697
continue
964
698
value = prop()
965
699
if not hasattr(value, "variant_level"):
966
properties[name] = value
700
all[name] = value
967
701
continue
968
properties[name] = type(value)(
969
value, variant_level = value.variant_level + 1)
970
return dbus.Dictionary(properties, signature="sv")
971
972
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
973
def PropertiesChanged(self, interface_name, changed_properties,
974
invalidated_properties):
975
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
976
standard.
977
"""
978
pass
702
all[name] = type(value)(value, variant_level=
703
value.variant_level+1)
704
return dbus.Dictionary(all, signature="sv")
979
705
980
706
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
981
707
out_signature="s",
982
708
path_keyword='object_path',
983
709
connection_keyword='connection')
984
710
def Introspect(self, object_path, connection):
985
"""Overloading of standard D-Bus method.
986
987
Inserts property tags and interface annotation tags.
711
"""Standard D-Bus method, overloaded to insert property tags.
988
712
"""
989
713
xmlstring = dbus.service.Object.Introspect(self, object_path,
990
714
connection)
991
715
try:
992
716
document = xml.dom.minidom.parseString(xmlstring)
993
994
717
def make_tag(document, name, prop):
995
718
e = document.createElement("property")
996
719
e.setAttribute("name", name)
997
720
e.setAttribute("type", prop._dbus_signature)
998
721
e.setAttribute("access", prop._dbus_access)
999
722
return e
1000
1001
723
for if_tag in document.getElementsByTagName("interface"):
1002
# Add property tags
1003
724
for tag in (make_tag(document, name, prop)
1004
725
for name, prop
1005
in self._get_all_dbus_things("property")
726
in self._get_all_dbus_properties()
1006
727
if prop._dbus_interface
1007
728
== if_tag.getAttribute("name")):
1008
729
if_tag.appendChild(tag)
1009
# Add annotation tags
1010
for typ in ("method", "signal", "property"):
1011
for tag in if_tag.getElementsByTagName(typ):
1012
annots = dict()
1013
for name, prop in (self.
1014
_get_all_dbus_things(typ)):
1015
if (name == tag.getAttribute("name")
1016
and prop._dbus_interface
1017
== if_tag.getAttribute("name")):
1018
annots.update(getattr(
1019
prop, "_dbus_annotations", {}))
1020
for name, value in annots.items():
1021
ann_tag = document.createElement(
1022
"annotation")
1023
ann_tag.setAttribute("name", name)
1024
ann_tag.setAttribute("value", value)
1025
tag.appendChild(ann_tag)
1026
# Add interface annotation tags
1027
for annotation, value in dict(
1028
itertools.chain.from_iterable(
1029
annotations().items()
1030
for name, annotations
1031
in self._get_all_dbus_things("interface")
1032
if name == if_tag.getAttribute("name")
1033
)).items():
1034
ann_tag = document.createElement("annotation")
1035
ann_tag.setAttribute("name", annotation)
1036
ann_tag.setAttribute("value", value)
1037
if_tag.appendChild(ann_tag)
1038
730
# Add the names to the return values for the
1039
731
# "org.freedesktop.DBus.Properties" methods
1040
732
if (if_tag.getAttribute("name")
1055
747
except (AttributeError, xml.dom.DOMException,
1056
748
xml.parsers.expat.ExpatError) as error:
1057
749
logger.error("Failed to override Introspection method",
1058
exc_info=error)
750
error)
1059
751
return xmlstring
1060
752
1061
753
1062
def datetime_to_dbus(dt, variant_level=0):
1063
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1064
if dt is None:
1065
return dbus.String("", variant_level = variant_level)
1066
return dbus.String(dt.isoformat(), variant_level=variant_level)
1067
1068
1069
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1070
"""A class decorator; applied to a subclass of
1071
dbus.service.Object, it will add alternate D-Bus attributes with
1072
interface names according to the "alt_interface_names" mapping.
1073
Usage:
1074
1075
@alternate_dbus_interfaces({"org.example.Interface":
1076
"net.example.AlternateInterface"})
1077
class SampleDBusObject(dbus.service.Object):
1078
@dbus.service.method("org.example.Interface")
1079
def SampleDBusMethod():
1080
pass
1081
1082
The above "SampleDBusMethod" on "SampleDBusObject" will be
1083
reachable via two interfaces: "org.example.Interface" and
1084
"net.example.AlternateInterface", the latter of which will have
1085
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1086
"true", unless "deprecate" is passed with a False value.
1087
1088
This works for methods and signals, and also for D-Bus properties
1089
(from DBusObjectWithProperties) and interfaces (from the
1090
dbus_interface_annotations decorator).
1091
"""
1092
1093
def wrapper(cls):
1094
for orig_interface_name, alt_interface_name in (
1095
alt_interface_names.items()):
1096
attr = {}
1097
interface_names = set()
1098
# Go though all attributes of the class
1099
for attrname, attribute in inspect.getmembers(cls):
1100
# Ignore non-D-Bus attributes, and D-Bus attributes
1101
# with the wrong interface name
1102
if (not hasattr(attribute, "_dbus_interface")
1103
or not attribute._dbus_interface.startswith(
1104
orig_interface_name)):
1105
continue
1106
# Create an alternate D-Bus interface name based on
1107
# the current name
1108
alt_interface = attribute._dbus_interface.replace(
1109
orig_interface_name, alt_interface_name)
1110
interface_names.add(alt_interface)
1111
# Is this a D-Bus signal?
1112
if getattr(attribute, "_dbus_is_signal", False):
1113
if sys.version_info.major == 2:
1114
# Extract the original non-method undecorated
1115
# function by black magic
1116
nonmethod_func = (dict(
1117
zip(attribute.func_code.co_freevars,
1118
attribute.__closure__))
1119
["func"].cell_contents)
1120
else:
1121
nonmethod_func = attribute
1122
# Create a new, but exactly alike, function
1123
# object, and decorate it to be a new D-Bus signal
1124
# with the alternate D-Bus interface name
1125
if sys.version_info.major == 2:
1126
new_function = types.FunctionType(
1127
nonmethod_func.func_code,
1128
nonmethod_func.func_globals,
1129
nonmethod_func.func_name,
1130
nonmethod_func.func_defaults,
1131
nonmethod_func.func_closure)
1132
else:
1133
new_function = types.FunctionType(
1134
nonmethod_func.__code__,
1135
nonmethod_func.__globals__,
1136
nonmethod_func.__name__,
1137
nonmethod_func.__defaults__,
1138
nonmethod_func.__closure__)
1139
new_function = (dbus.service.signal(
1140
alt_interface,
1141
attribute._dbus_signature)(new_function))
1142
# Copy annotations, if any
1143
try:
1144
new_function._dbus_annotations = dict(
1145
attribute._dbus_annotations)
1146
except AttributeError:
1147
pass
1148
# Define a creator of a function to call both the
1149
# original and alternate functions, so both the
1150
# original and alternate signals gets sent when
1151
# the function is called
1152
def fixscope(func1, func2):
1153
"""This function is a scope container to pass
1154
func1 and func2 to the "call_both" function
1155
outside of its arguments"""
1156
1157
def call_both(*args, **kwargs):
1158
"""This function will emit two D-Bus
1159
signals by calling func1 and func2"""
1160
func1(*args, **kwargs)
1161
func2(*args, **kwargs)
1162
1163
return call_both
1164
# Create the "call_both" function and add it to
1165
# the class
1166
attr[attrname] = fixscope(attribute, new_function)
1167
# Is this a D-Bus method?
1168
elif getattr(attribute, "_dbus_is_method", False):
1169
# Create a new, but exactly alike, function
1170
# object. Decorate it to be a new D-Bus method
1171
# with the alternate D-Bus interface name. Add it
1172
# to the class.
1173
attr[attrname] = (
1174
dbus.service.method(
1175
alt_interface,
1176
attribute._dbus_in_signature,
1177
attribute._dbus_out_signature)
1178
(types.FunctionType(attribute.func_code,
1179
attribute.func_globals,
1180
attribute.func_name,
1181
attribute.func_defaults,
1182
attribute.func_closure)))
1183
# Copy annotations, if any
1184
try:
1185
attr[attrname]._dbus_annotations = dict(
1186
attribute._dbus_annotations)
1187
except AttributeError:
1188
pass
1189
# Is this a D-Bus property?
1190
elif getattr(attribute, "_dbus_is_property", False):
1191
# Create a new, but exactly alike, function
1192
# object, and decorate it to be a new D-Bus
1193
# property with the alternate D-Bus interface
1194
# name. Add it to the class.
1195
attr[attrname] = (dbus_service_property(
1196
alt_interface, attribute._dbus_signature,
1197
attribute._dbus_access,
1198
attribute._dbus_get_args_options
1199
["byte_arrays"])
1200
(types.FunctionType(
1201
attribute.func_code,
1202
attribute.func_globals,
1203
attribute.func_name,
1204
attribute.func_defaults,
1205
attribute.func_closure)))
1206
# Copy annotations, if any
1207
try:
1208
attr[attrname]._dbus_annotations = dict(
1209
attribute._dbus_annotations)
1210
except AttributeError:
1211
pass
1212
# Is this a D-Bus interface?
1213
elif getattr(attribute, "_dbus_is_interface", False):
1214
# Create a new, but exactly alike, function
1215
# object. Decorate it to be a new D-Bus interface
1216
# with the alternate D-Bus interface name. Add it
1217
# to the class.
1218
attr[attrname] = (
1219
dbus_interface_annotations(alt_interface)
1220
(types.FunctionType(attribute.func_code,
1221
attribute.func_globals,
1222
attribute.func_name,
1223
attribute.func_defaults,
1224
attribute.func_closure)))
1225
if deprecate:
1226
# Deprecate all alternate interfaces
1227
iname="_AlternateDBusNames_interface_annotation{}"
1228
for interface_name in interface_names:
1229
1230
@dbus_interface_annotations(interface_name)
1231
def func(self):
1232
return { "org.freedesktop.DBus.Deprecated":
1233
"true" }
1234
# Find an unused name
1235
for aname in (iname.format(i)
1236
for i in itertools.count()):
1237
if aname not in attr:
1238
attr[aname] = func
1239
break
1240
if interface_names:
1241
# Replace the class with a new subclass of it with
1242
# methods, signals, etc. as created above.
1243
cls = type(b"{}Alternate".format(cls.__name__),
1244
(cls, ), attr)
1245
return cls
1246
1247
return wrapper
1248
1249
1250
@alternate_dbus_interfaces({"se.recompile.Mandos":
1251
"se.bsnet.fukt.Mandos"})
1252
754
class ClientDBus(Client, DBusObjectWithProperties):
1253
755
"""A Client class using D-Bus
1254
756
1258
760
"""
1259
761
1260
762
runtime_expansions = (Client.runtime_expansions
1261
+ ("dbus_object_path", ))
1262
1263
_interface = "se.recompile.Mandos.Client"
763
+ ("dbus_object_path",))
1264
764
1265
765
# dbus.service.Object doesn't use super(), so we can't either.
1266
766
1267
767
def __init__(self, bus = None, *args, **kwargs):
768
self._approvals_pending = 0
1268
769
self.bus = bus
1269
770
Client.__init__(self, *args, **kwargs)
1270
771
# Only now, when this client is initialized, can it show up on
1271
772
# the D-Bus
1272
client_object_name = str(self.name).translate(
773
client_object_name = unicode(self.name).translate(
1273
774
{ord("."): ord("_"),
1274
775
ord("-"): ord("_")})
1275
self.dbus_object_path = dbus.ObjectPath(
1276
"/clients/" + client_object_name)
776
self.dbus_object_path = (dbus.ObjectPath
777
("/clients/" + client_object_name))
1277
778
DBusObjectWithProperties.__init__(self, self.bus,
1278
779
self.dbus_object_path)
1279
1280
def notifychangeproperty(transform_func, dbus_name,
1281
type_func=lambda x: x,
1282
variant_level=1,
1283
invalidate_only=False,
1284
_interface=_interface):
1285
""" Modify a variable so that it's a property which announces
1286
its changes to DBus.
1287
1288
transform_fun: Function that takes a value and a variant_level
1289
and transforms it to a D-Bus type.
1290
dbus_name: D-Bus name of the variable
1291
type_func: Function that transform the value before sending it
1292
to the D-Bus. Default: no transform
1293
variant_level: D-Bus variant level. Default: 1
1294
"""
1295
attrname = "_{}".format(dbus_name)
1296
1297
def setter(self, value):
1298
if hasattr(self, "dbus_object_path"):
1299
if (not hasattr(self, attrname) or
1300
type_func(getattr(self, attrname, None))
1301
!= type_func(value)):
1302
if invalidate_only:
1303
self.PropertiesChanged(
1304
_interface, dbus.Dictionary(),
1305
dbus.Array((dbus_name, )))
1306
else:
1307
dbus_value = transform_func(
1308
type_func(value),
1309
variant_level = variant_level)
1310
self.PropertyChanged(dbus.String(dbus_name),
1311
dbus_value)
1312
self.PropertiesChanged(
1313
_interface,
1314
dbus.Dictionary({ dbus.String(dbus_name):
1315
dbus_value }),
1316
dbus.Array())
1317
setattr(self, attrname, value)
1318
1319
return property(lambda self: getattr(self, attrname), setter)
1320
1321
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1322
approvals_pending = notifychangeproperty(dbus.Boolean,
1323
"ApprovalPending",
1324
type_func = bool)
1325
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1326
last_enabled = notifychangeproperty(datetime_to_dbus,
1327
"LastEnabled")
1328
checker = notifychangeproperty(
1329
dbus.Boolean, "CheckerRunning",
1330
type_func = lambda checker: checker is not None)
1331
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1332
"LastCheckedOK")
1333
last_checker_status = notifychangeproperty(dbus.Int16,
1334
"LastCheckerStatus")
1335
last_approval_request = notifychangeproperty(
1336
datetime_to_dbus, "LastApprovalRequest")
1337
approved_by_default = notifychangeproperty(dbus.Boolean,
1338
"ApprovedByDefault")
1339
approval_delay = notifychangeproperty(
1340
dbus.UInt64, "ApprovalDelay",
1341
type_func = lambda td: td.total_seconds() * 1000)
1342
approval_duration = notifychangeproperty(
1343
dbus.UInt64, "ApprovalDuration",
1344
type_func = lambda td: td.total_seconds() * 1000)
1345
host = notifychangeproperty(dbus.String, "Host")
1346
timeout = notifychangeproperty(
1347
dbus.UInt64, "Timeout",
1348
type_func = lambda td: td.total_seconds() * 1000)
1349
extended_timeout = notifychangeproperty(
1350
dbus.UInt64, "ExtendedTimeout",
1351
type_func = lambda td: td.total_seconds() * 1000)
1352
interval = notifychangeproperty(
1353
dbus.UInt64, "Interval",
1354
type_func = lambda td: td.total_seconds() * 1000)
1355
checker_command = notifychangeproperty(dbus.String, "Checker")
1356
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1357
invalidate_only=True)
1358
1359
del notifychangeproperty
780
def _set_expires(self, value):
781
old_value = getattr(self, "_expires", None)
782
self._expires = value
783
if hasattr(self, "dbus_object_path") and old_value != value:
784
dbus_time = (self._datetime_to_dbus(self._expires,
785
variant_level=1))
786
self.PropertyChanged(dbus.String("Expires"),
787
dbus_time)
788
expires = property(lambda self: self._expires, _set_expires)
789
del _set_expires
790
791
def _get_approvals_pending(self):
792
return self._approvals_pending
793
def _set_approvals_pending(self, value):
794
old_value = self._approvals_pending
795
self._approvals_pending = value
796
bval = bool(value)
797
if (hasattr(self, "dbus_object_path")
798
and bval is not bool(old_value)):
799
dbus_bool = dbus.Boolean(bval, variant_level=1)
800
self.PropertyChanged(dbus.String("ApprovalPending"),
801
dbus_bool)
802
803
approvals_pending = property(_get_approvals_pending,
804
_set_approvals_pending)
805
del _get_approvals_pending, _set_approvals_pending
806
807
@staticmethod
808
def _datetime_to_dbus(dt, variant_level=0):
809
"""Convert a UTC datetime.datetime() to a D-Bus type."""
810
if dt is None:
811
return dbus.String("", variant_level = variant_level)
812
return dbus.String(dt.isoformat(),
813
variant_level=variant_level)
814
815
def enable(self):
816
oldstate = getattr(self, "enabled", False)
817
r = Client.enable(self)
818
if oldstate != self.enabled:
819
# Emit D-Bus signals
820
self.PropertyChanged(dbus.String("Enabled"),
821
dbus.Boolean(True, variant_level=1))
822
self.PropertyChanged(
823
dbus.String("LastEnabled"),
824
self._datetime_to_dbus(self.last_enabled,
825
variant_level=1))
826
return r
827
828
def disable(self, quiet = False):
829
oldstate = getattr(self, "enabled", False)
830
r = Client.disable(self, quiet=quiet)
831
if not quiet and oldstate != self.enabled:
832
# Emit D-Bus signal
833
self.PropertyChanged(dbus.String("Enabled"),
834
dbus.Boolean(False, variant_level=1))
835
return r
1360
836
1361
837
def __del__(self, *args, **kwargs):
1362
838
try:
1367
843
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1368
844
Client.__del__(self, *args, **kwargs)
1369
845
1370
def checker_callback(self, source, condition,
1371
connection, command, *args, **kwargs):
1372
ret = Client.checker_callback(self, source, condition,
1373
connection, command, *args,
1374
**kwargs)
1375
exitstatus = self.last_checker_status
1376
if exitstatus >= 0:
846
def checker_callback(self, pid, condition, command,
847
*args, **kwargs):
848
self.checker_callback_tag = None
849
self.checker = None
850
# Emit D-Bus signal
851
self.PropertyChanged(dbus.String("CheckerRunning"),
852
dbus.Boolean(False, variant_level=1))
853
if os.WIFEXITED(condition):
854
exitstatus = os.WEXITSTATUS(condition)
1377
855
# Emit D-Bus signal
1378
856
self.CheckerCompleted(dbus.Int16(exitstatus),
1379
dbus.Int64(0),
857
dbus.Int64(condition),
1380
858
dbus.String(command))
1381
859
else:
1382
860
# Emit D-Bus signal
1383
861
self.CheckerCompleted(dbus.Int16(-1),
1384
dbus.Int64(
1385
self.last_checker_signal),
862
dbus.Int64(condition),
1386
863
dbus.String(command))
1387
return ret
864
865
return Client.checker_callback(self, pid, condition, command,
866
*args, **kwargs)
867
868
def checked_ok(self, *args, **kwargs):
869
Client.checked_ok(self, *args, **kwargs)
870
# Emit D-Bus signal
871
self.PropertyChanged(
872
dbus.String("LastCheckedOK"),
873
(self._datetime_to_dbus(self.last_checked_ok,
874
variant_level=1)))
875
876
def need_approval(self, *args, **kwargs):
877
r = Client.need_approval(self, *args, **kwargs)
878
# Emit D-Bus signal
879
self.PropertyChanged(
880
dbus.String("LastApprovalRequest"),
881
(self._datetime_to_dbus(self.last_approval_request,
882
variant_level=1)))
883
return r
1388
884
1389
885
def start_checker(self, *args, **kwargs):
1390
old_checker_pid = getattr(self.checker, "pid", None)
886
old_checker = self.checker
887
if self.checker is not None:
888
old_checker_pid = self.checker.pid
889
else:
890
old_checker_pid = None
1391
891
r = Client.start_checker(self, *args, **kwargs)
1392
892
# Only if new checker process was started
1393
893
if (self.checker is not None
1394
894
and old_checker_pid != self.checker.pid):
1395
895
# Emit D-Bus signal
1396
896
self.CheckerStarted(self.current_checker_command)
897
self.PropertyChanged(
898
dbus.String("CheckerRunning"),
899
dbus.Boolean(True, variant_level=1))
1397
900
return r
1398
901
902
def stop_checker(self, *args, **kwargs):
903
old_checker = getattr(self, "checker", None)
904
r = Client.stop_checker(self, *args, **kwargs)
905
if (old_checker is not None
906
and getattr(self, "checker", None) is None):
907
self.PropertyChanged(dbus.String("CheckerRunning"),
908
dbus.Boolean(False, variant_level=1))
909
return r
910
1399
911
def _reset_approved(self):
1400
self.approved = None
912
self._approved = None
1401
913
return False
1402
914
1403
915
def approve(self, value=True):
1404
self.approved = value
1405
gobject.timeout_add(int(self.approval_duration.total_seconds()
1406
* 1000), self._reset_approved)
1407
916
self.send_changedstate()
917
self._approved = value
918
gobject.timeout_add(self._timedelta_to_milliseconds
919
(self.approval_duration),
920
self._reset_approved)
921
1408
922
1409
923
## D-Bus methods, signals & properties
1410
1411
## Interfaces
924
_interface = "se.bsnet.fukt.Mandos.Client"
1412
925
1413
926
## Signals
1414
927
1425
938
pass
1426
939
1427
940
# PropertyChanged - signal
1428
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1429
941
@dbus.service.signal(_interface, signature="sv")
1430
942
def PropertyChanged(self, property, value):
1431
943
"D-Bus signal"
1495
1007
return dbus.Boolean(bool(self.approvals_pending))
1496
1008
1497
1009
# ApprovedByDefault - property
1498
@dbus_service_property(_interface,
1499
signature="b",
1010
@dbus_service_property(_interface, signature="b",
1500
1011
access="readwrite")
1501
1012
def ApprovedByDefault_dbus_property(self, value=None):
1502
1013
if value is None: # get
1503
1014
return dbus.Boolean(self.approved_by_default)
1015
old_value = self.approved_by_default
1504
1016
self.approved_by_default = bool(value)
1017
# Emit D-Bus signal
1018
if old_value != self.approved_by_default:
1019
self.PropertyChanged(dbus.String("ApprovedByDefault"),
1020
dbus.Boolean(value, variant_level=1))
1505
1021
1506
1022
# ApprovalDelay - property
1507
@dbus_service_property(_interface,
1508
signature="t",
1023
@dbus_service_property(_interface, signature="t",
1509
1024
access="readwrite")
1510
1025
def ApprovalDelay_dbus_property(self, value=None):
1511
1026
if value is None: # get
1512
return dbus.UInt64(self.approval_delay.total_seconds()
1513
* 1000)
1027
return dbus.UInt64(self.approval_delay_milliseconds())
1028
old_value = self.approval_delay
1514
1029
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1030
# Emit D-Bus signal
1031
if old_value != self.approval_delay:
1032
self.PropertyChanged(dbus.String("ApprovalDelay"),
1033
dbus.UInt64(value, variant_level=1))
1515
1034
1516
1035
# ApprovalDuration - property
1517
@dbus_service_property(_interface,
1518
signature="t",
1036
@dbus_service_property(_interface, signature="t",
1519
1037
access="readwrite")
1520
1038
def ApprovalDuration_dbus_property(self, value=None):
1521
1039
if value is None: # get
1522
return dbus.UInt64(self.approval_duration.total_seconds()
1523
* 1000)
1040
return dbus.UInt64(self._timedelta_to_milliseconds(
1041
self.approval_duration))
1042
old_value = self.approval_duration
1524
1043
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1044
# Emit D-Bus signal
1045
if old_value != self.approval_duration:
1046
self.PropertyChanged(dbus.String("ApprovalDuration"),
1047
dbus.UInt64(value, variant_level=1))
1525
1048
1526
1049
# Name - property
1527
1050
@dbus_service_property(_interface, signature="s", access="read")
1534
1057
return dbus.String(self.fingerprint)
1535
1058
1536
1059
# Host - property
1537
@dbus_service_property(_interface,
1538
signature="s",
1060
@dbus_service_property(_interface, signature="s",
1539
1061
access="readwrite")
1540
1062
def Host_dbus_property(self, value=None):
1541
1063
if value is None: # get
1542
1064
return dbus.String(self.host)
1543
self.host = str(value)
1065
old_value = self.host
1066
self.host = value
1067
# Emit D-Bus signal
1068
if old_value != self.host:
1069
self.PropertyChanged(dbus.String("Host"),
1070
dbus.String(value, variant_level=1))
1544
1071
1545
1072
# Created - property
1546
1073
@dbus_service_property(_interface, signature="s", access="read")
1547
1074
def Created_dbus_property(self):
1548
return datetime_to_dbus(self.created)
1075
return dbus.String(self._datetime_to_dbus(self.created))
1549
1076
1550
1077
# LastEnabled - property
1551
1078
@dbus_service_property(_interface, signature="s", access="read")
1552
1079
def LastEnabled_dbus_property(self):
1553
return datetime_to_dbus(self.last_enabled)
1080
return self._datetime_to_dbus(self.last_enabled)
1554
1081
1555
1082
# Enabled - property
1556
@dbus_service_property(_interface,
1557
signature="b",
1083
@dbus_service_property(_interface, signature="b",
1558
1084
access="readwrite")
1559
1085
def Enabled_dbus_property(self, value=None):
1560
1086
if value is None: # get
1565
1091
self.disable()
1566
1092
1567
1093
# LastCheckedOK - property
1568
@dbus_service_property(_interface,
1569
signature="s",
1094
@dbus_service_property(_interface, signature="s",
1570
1095
access="readwrite")
1571
1096
def LastCheckedOK_dbus_property(self, value=None):
1572
1097
if value is not None:
1573
1098
self.checked_ok()
1574
1099
return
1575
return datetime_to_dbus(self.last_checked_ok)
1576
1577
# LastCheckerStatus - property
1578
@dbus_service_property(_interface, signature="n", access="read")
1579
def LastCheckerStatus_dbus_property(self):
1580
return dbus.Int16(self.last_checker_status)
1100
return self._datetime_to_dbus(self.last_checked_ok)
1581
1101
1582
1102
# Expires - property
1583
1103
@dbus_service_property(_interface, signature="s", access="read")
1584
1104
def Expires_dbus_property(self):
1585
return datetime_to_dbus(self.expires)
1105
return self._datetime_to_dbus(self.expires)
1586
1106
1587
1107
# LastApprovalRequest - property
1588
1108
@dbus_service_property(_interface, signature="s", access="read")
1589
1109
def LastApprovalRequest_dbus_property(self):
1590
return datetime_to_dbus(self.last_approval_request)
1110
return self._datetime_to_dbus(self.last_approval_request)
1591
1111
1592
1112
# Timeout - property
1593
@dbus_service_property(_interface,
1594
signature="t",
1113
@dbus_service_property(_interface, signature="t",
1595
1114
access="readwrite")
1596
1115
def Timeout_dbus_property(self, value=None):
1597
1116
if value is None: # get
1598
return dbus.UInt64(self.timeout.total_seconds() * 1000)
1599
old_timeout = self.timeout
1117
return dbus.UInt64(self.timeout_milliseconds())
1118
old_value = self.timeout
1600
1119
self.timeout = datetime.timedelta(0, 0, 0, value)
1601
# Reschedule disabling
1602
if self.enabled:
1603
now = datetime.datetime.utcnow()
1604
self.expires += self.timeout - old_timeout
1605
if self.expires <= now:
1606
# The timeout has passed
1607
self.disable()
1608
else:
1609
if (getattr(self, "disable_initiator_tag", None)
1610
is None):
1611
return
1612
gobject.source_remove(self.disable_initiator_tag)
1613
self.disable_initiator_tag = gobject.timeout_add(
1614
int((self.expires - now).total_seconds() * 1000),
1615
self.disable)
1616
1120
# Emit D-Bus signal
1121
if old_value != self.timeout:
1122
self.PropertyChanged(dbus.String("Timeout"),
1123
dbus.UInt64(value, variant_level=1))
1124
if getattr(self, "disable_initiator_tag", None) is None:
1125
return
1126
# Reschedule timeout
1127
gobject.source_remove(self.disable_initiator_tag)
1128
self.disable_initiator_tag = None
1129
self.expires = None
1130
time_to_die = (self.
1131
_timedelta_to_milliseconds((self
1132
.last_checked_ok
1133
+ self.timeout)
1134
- datetime.datetime
1135
.utcnow()))
1136
if time_to_die <= 0:
1137
# The timeout has passed
1138
self.disable()
1139
else:
1140
self.expires = (datetime.datetime.utcnow()
1141
+ datetime.timedelta(milliseconds = time_to_die))
1142
self.disable_initiator_tag = (gobject.timeout_add
1143
(time_to_die, self.disable))
1144
1617
1145
# ExtendedTimeout - property
1618
@dbus_service_property(_interface,
1619
signature="t",
1146
@dbus_service_property(_interface, signature="t",
1620
1147
access="readwrite")
1621
1148
def ExtendedTimeout_dbus_property(self, value=None):
1622
1149
if value is None: # get
1623
return dbus.UInt64(self.extended_timeout.total_seconds()
1624
* 1000)
1150
return dbus.UInt64(self.extended_timeout_milliseconds())
1151
old_value = self.extended_timeout
1625
1152
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1626
1153
# Emit D-Bus signal
1154
if old_value != self.extended_timeout:
1155
self.PropertyChanged(dbus.String("ExtendedTimeout"),
1156
dbus.UInt64(value, variant_level=1))
1157
1627
1158
# Interval - property
1628
@dbus_service_property(_interface,
1629
signature="t",
1159
@dbus_service_property(_interface, signature="t",
1630
1160
access="readwrite")
1631
1161
def Interval_dbus_property(self, value=None):
1632
1162
if value is None: # get
1633
return dbus.UInt64(self.interval.total_seconds() * 1000)
1163
return dbus.UInt64(self.interval_milliseconds())
1164
old_value = self.interval
1634
1165
self.interval = datetime.timedelta(0, 0, 0, value)
1166
# Emit D-Bus signal
1167
if old_value != self.interval:
1168
self.PropertyChanged(dbus.String("Interval"),
1169
dbus.UInt64(value, variant_level=1))
1635
1170
if getattr(self, "checker_initiator_tag", None) is None:
1636
1171
return
1637
if self.enabled:
1638
# Reschedule checker run
1639
gobject.source_remove(self.checker_initiator_tag)
1640
self.checker_initiator_tag = gobject.timeout_add(
1641
value, self.start_checker)
1642
self.start_checker() # Start one now, too
1643
1172
# Reschedule checker run
1173
gobject.source_remove(self.checker_initiator_tag)
1174
self.checker_initiator_tag = (gobject.timeout_add
1175
(value, self.start_checker))
1176
self.start_checker() # Start one now, too
1177
1644
1178
# Checker - property
1645
@dbus_service_property(_interface,
1646
signature="s",
1179
@dbus_service_property(_interface, signature="s",
1647
1180
access="readwrite")
1648
1181
def Checker_dbus_property(self, value=None):
1649
1182
if value is None: # get
1650
1183
return dbus.String(self.checker_command)
1651
self.checker_command = str(value)
1184
old_value = self.checker_command
1185
self.checker_command = value
1186
# Emit D-Bus signal
1187
if old_value != self.checker_command:
1188
self.PropertyChanged(dbus.String("Checker"),
1189
dbus.String(self.checker_command,
1190
variant_level=1))
1652
1191
1653
1192
# CheckerRunning - property
1654
@dbus_service_property(_interface,
1655
signature="b",
1193
@dbus_service_property(_interface, signature="b",
1656
1194
access="readwrite")
1657
1195
def CheckerRunning_dbus_property(self, value=None):
1658
1196
if value is None: # get
1668
1206
return self.dbus_object_path # is already a dbus.ObjectPath
1669
1207
1670
1208
# Secret = property
1671
@dbus_service_property(_interface,
1672
signature="ay",
1673
access="write",
1674
byte_arrays=True)
1209
@dbus_service_property(_interface, signature="ay",
1210
access="write", byte_arrays=True)
1675
1211
def Secret_dbus_property(self, value):
1676
self.secret = bytes(value)
1212
self.secret = str(value)
1677
1213
1678
1214
del _interface
1679
1215
1683
1219
self._pipe = child_pipe
1684
1220
self._pipe.send(('init', fpr, address))
1685
1221
if not self._pipe.recv():
1686
raise KeyError(fpr)
1687
1222
raise KeyError()
1223
1688
1224
def __getattribute__(self, name):
1689
if name == '_pipe':
1225
if(name == '_pipe'):
1690
1226
return super(ProxyClient, self).__getattribute__(name)
1691
1227
self._pipe.send(('getattr', name))
1692
1228
data = self._pipe.recv()
1693
1229
if data[0] == 'data':
1694
1230
return data[1]
1695
1231
if data[0] == 'function':
1696
1697
1232
def func(*args, **kwargs):
1698
1233
self._pipe.send(('funcall', name, args, kwargs))
1699
1234
return self._pipe.recv()[1]
1700
1701
1235
return func
1702
1236
1703
1237
def __setattr__(self, name, value):
1704
if name == '_pipe':
1238
if(name == '_pipe'):
1705
1239
return super(ProxyClient, self).__setattr__(name, value)
1706
1240
self._pipe.send(('setattr', name, value))
1707
1241
1715
1249
def handle(self):
1716
1250
with contextlib.closing(self.server.child_pipe) as child_pipe:
1717
1251
logger.info("TCP connection from: %s",
1718
str(self.client_address))
1252
unicode(self.client_address))
1719
1253
logger.debug("Pipe FD: %d",
1720
1254
self.server.child_pipe.fileno())
1721
1722
session = gnutls.connection.ClientSession(
1723
self.request, gnutls.connection .X509Credentials())
1724
1255
1256
session = (gnutls.connection
1257
.ClientSession(self.request,
1258
gnutls.connection
1259
.X509Credentials()))
1260
1725
1261
# Note: gnutls.connection.X509Credentials is really a
1726
1262
# generic GnuTLS certificate credentials object so long as
1727
1263
# no X.509 keys are added to it. Therefore, we can use it
1728
1264
# here despite using OpenPGP certificates.
1729
1265
1730
1266
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1731
1267
# "+AES-256-CBC", "+SHA1",
1732
1268
# "+COMP-NULL", "+CTYPE-OPENPGP",
1735
1271
priority = self.server.gnutls_priority
1736
1272
if priority is None:
1737
1273
priority = "NORMAL"
1738
gnutls.library.functions.gnutls_priority_set_direct(
1739
session._c_object, priority, None)
1740
1274
(gnutls.library.functions
1275
.gnutls_priority_set_direct(session._c_object,
1276
priority, None))
1277
1741
1278
# Start communication using the Mandos protocol
1742
1279
# Get protocol number
1743
1280
line = self.request.makefile().readline()
1744
1281
logger.debug("Protocol version: %r", line)
1745
1282
try:
1746
1283
if int(line.strip().split()[0]) > 1:
1747
raise RuntimeError(line)
1284
raise RuntimeError
1748
1285
except (ValueError, IndexError, RuntimeError) as error:
1749
1286
logger.error("Unknown protocol version: %s", error)
1750
1287
return
1751
1288
1752
1289
# Start GnuTLS connection
1753
1290
try:
1754
1291
session.handshake()
1758
1295
# established. Just abandon the request.
1759
1296
return
1760
1297
logger.debug("Handshake succeeded")
1761
1298
1762
1299
approval_required = False
1763
1300
try:
1764
1301
try:
1765
fpr = self.fingerprint(
1766
self.peer_certificate(session))
1302
fpr = self.fingerprint(self.peer_certificate
1303
(session))
1767
1304
except (TypeError,
1768
1305
gnutls.errors.GNUTLSError) as error:
1769
1306
logger.warning("Bad certificate: %s", error)
1770
1307
return
1771
1308
logger.debug("Fingerprint: %s", fpr)
1772
1309
1773
1310
try:
1774
1311
client = ProxyClient(child_pipe, fpr,
1775
1312
self.client_address)
1784
1321
while True:
1785
1322
if not client.enabled:
1786
1323
logger.info("Client %s is disabled",
1787
client.name)
1324
client.name)
1788
1325
if self.server.use_dbus:
1789
1326
# Emit D-Bus signal
1790
client.Rejected("Disabled")
1327
client.Rejected("Disabled")
1791
1328
return
1792
1329
1793
if client.approved or not client.approval_delay:
1330
if client._approved or not client.approval_delay:
1794
1331
#We are approved or approval is disabled
1795
1332
break
1796
elif client.approved is None:
1333
elif client._approved is None:
1797
1334
logger.info("Client %s needs approval",
1798
1335
client.name)
1799
1336
if self.server.use_dbus:
1800
1337
# Emit D-Bus signal
1801
1338
client.NeedApproval(
1802
client.approval_delay.total_seconds()
1803
* 1000, client.approved_by_default)
1339
client.approval_delay_milliseconds(),
1340
client.approved_by_default)
1804
1341
else:
1805
1342
logger.warning("Client %s was not approved",
1806
1343
client.name)
1810
1347
return
1811
1348
1812
1349
#wait until timeout or approved
1350
#x = float(client._timedelta_to_milliseconds(delay))
1813
1351
time = datetime.datetime.now()
1814
1352
client.changedstate.acquire()
1815
client.changedstate.wait(delay.total_seconds())
1353
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
1816
1354
client.changedstate.release()
1817
1355
time2 = datetime.datetime.now()
1818
1356
if (time2 - time) >= delay:
1834
1372
try:
1835
1373
sent = session.send(client.secret[sent_size:])
1836
1374
except gnutls.errors.GNUTLSError as error:
1837
logger.warning("gnutls send failed",
1838
exc_info=error)
1375
logger.warning("gnutls send failed")
1839
1376
return
1840
logger.debug("Sent: %d, remaining: %d", sent,
1841
len(client.secret) - (sent_size
1842
+ sent))
1377
logger.debug("Sent: %d, remaining: %d",
1378
sent, len(client.secret)
1379
- (sent_size + sent))
1843
1380
sent_size += sent
1844
1381
1845
1382
logger.info("Sending secret to %s", client.name)
1846
# bump the timeout using extended_timeout
1847
client.bump_timeout(client.extended_timeout)
1383
# bump the timeout as if seen
1384
client.checked_ok(client.extended_timeout)
1848
1385
if self.server.use_dbus:
1849
1386
# Emit D-Bus signal
1850
1387
client.GotSecret()
1855
1392
try:
1856
1393
session.bye()
1857
1394
except gnutls.errors.GNUTLSError as error:
1858
logger.warning("GnuTLS bye failed",
1859
exc_info=error)
1395
logger.warning("GnuTLS bye failed")
1860
1396
1861
1397
@staticmethod
1862
1398
def peer_certificate(session):
1863
1399
"Return the peer's OpenPGP certificate as a bytestring"
1864
1400
# If not an OpenPGP certificate...
1865
if (gnutls.library.functions.gnutls_certificate_type_get(
1866
session._c_object)
1401
if (gnutls.library.functions
1402
.gnutls_certificate_type_get(session._c_object)
1867
1403
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1868
1404
# ...do the normal thing
1869
1405
return session.peer_certificate
1883
1419
def fingerprint(openpgp):
1884
1420
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1885
1421
# New GnuTLS "datum" with the OpenPGP public key
1886
datum = gnutls.library.types.gnutls_datum_t(
1887
ctypes.cast(ctypes.c_char_p(openpgp),
1888
ctypes.POINTER(ctypes.c_ubyte)),
1889
ctypes.c_uint(len(openpgp)))
1422
datum = (gnutls.library.types
1423
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1424
ctypes.POINTER
1425
(ctypes.c_ubyte)),
1426
ctypes.c_uint(len(openpgp))))
1890
1427
# New empty GnuTLS certificate
1891
1428
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1892
gnutls.library.functions.gnutls_openpgp_crt_init(
1893
ctypes.byref(crt))
1429
(gnutls.library.functions
1430
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
1894
1431
# Import the OpenPGP public key into the certificate
1895
gnutls.library.functions.gnutls_openpgp_crt_import(
1896
crt, ctypes.byref(datum),
1897
gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)
1432
(gnutls.library.functions
1433
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1434
gnutls.library.constants
1435
.GNUTLS_OPENPGP_FMT_RAW))
1898
1436
# Verify the self signature in the key
1899
1437
crtverify = ctypes.c_uint()
1900
gnutls.library.functions.gnutls_openpgp_crt_verify_self(
1901
crt, 0, ctypes.byref(crtverify))
1438
(gnutls.library.functions
1439
.gnutls_openpgp_crt_verify_self(crt, 0,
1440
ctypes.byref(crtverify)))
1902
1441
if crtverify.value != 0:
1903
1442
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1904
raise gnutls.errors.CertificateSecurityError(
1905
"Verify failed")
1443
raise (gnutls.errors.CertificateSecurityError
1444
("Verify failed"))
1906
1445
# New buffer for the fingerprint
1907
1446
buf = ctypes.create_string_buffer(20)
1908
1447
buf_len = ctypes.c_size_t()
1909
1448
# Get the fingerprint from the certificate into the buffer
1910
gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint(
1911
crt, ctypes.byref(buf), ctypes.byref(buf_len))
1449
(gnutls.library.functions
1450
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1451
ctypes.byref(buf_len)))
1912
1452
# Deinit the certificate
1913
1453
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1914
1454
# Convert the buffer to a Python bytestring
1915
1455
fpr = ctypes.string_at(buf, buf_len.value)
1916
1456
# Convert the bytestring to hexadecimal notation
1917
hex_fpr = binascii.hexlify(fpr).upper()
1457
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
1918
1458
return hex_fpr
1919
1459
1920
1460
1921
1461
class MultiprocessingMixIn(object):
1922
1462
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
1923
1924
1463
def sub_process_main(self, request, address):
1925
1464
try:
1926
1465
self.finish_request(request, address)
1927
except Exception:
1466
except:
1928
1467
self.handle_error(request, address)
1929
1468
self.close_request(request)
1930
1469
1931
1470
def process_request(self, request, address):
1932
1471
"""Start a new process to process the request."""
1933
proc = multiprocessing.Process(target = self.sub_process_main,
1934
args = (request, address))
1935
proc.start()
1936
return proc
1937
1472
multiprocessing.Process(target = self.sub_process_main,
1473
args = (request, address)).start()
1938
1474
1939
1475
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1940
1476
""" adds a pipe to the MixIn """
1941
1942
1477
def process_request(self, request, client_address):
1943
1478
"""Overrides and wraps the original process_request().
1944
1479
1945
1480
This function creates a new pipe in self.pipe
1946
1481
"""
1947
1482
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1948
1949
proc = MultiprocessingMixIn.process_request(self, request,
1950
client_address)
1483
1484
super(MultiprocessingMixInWithPipe,
1485
self).process_request(request, client_address)
1951
1486
self.child_pipe.close()
1952
self.add_pipe(parent_pipe, proc)
1953
1954
def add_pipe(self, parent_pipe, proc):
1487
self.add_pipe(parent_pipe)
1488
1489
def add_pipe(self, parent_pipe):
1955
1490
"""Dummy function; override as necessary"""
1956
raise NotImplementedError()
1957
1491
raise NotImplementedError
1958
1492
1959
1493
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1960
1494
socketserver.TCPServer, object):
1965
1499
interface: None or a network interface name (string)
1966
1500
use_ipv6: Boolean; to use IPv6 or not
1967
1501
"""
1968
1969
1502
def __init__(self, server_address, RequestHandlerClass,
1970
interface=None,
1971
use_ipv6=True,
1972
socketfd=None):
1973
"""If socketfd is set, use that file descriptor instead of
1974
creating a new one with socket.socket().
1975
"""
1503
interface=None, use_ipv6=True):
1976
1504
self.interface = interface
1977
1505
if use_ipv6:
1978
1506
self.address_family = socket.AF_INET6
1979
if socketfd is not None:
1980
# Save the file descriptor
1981
self.socketfd = socketfd
1982
# Save the original socket.socket() function
1983
self.socket_socket = socket.socket
1984
# To implement --socket, we monkey patch socket.socket.
1985
#
1986
# (When socketserver.TCPServer is a new-style class, we
1987
# could make self.socket into a property instead of monkey
1988
# patching socket.socket.)
1989
#
1990
# Create a one-time-only replacement for socket.socket()
1991
@functools.wraps(socket.socket)
1992
def socket_wrapper(*args, **kwargs):
1993
# Restore original function so subsequent calls are
1994
# not affected.
1995
socket.socket = self.socket_socket
1996
del self.socket_socket
1997
# This time only, return a new socket object from the
1998
# saved file descriptor.
1999
return socket.fromfd(self.socketfd, *args, **kwargs)
2000
# Replace socket.socket() function with wrapper
2001
socket.socket = socket_wrapper
2002
# The socketserver.TCPServer.__init__ will call
2003
# socket.socket(), which might be our replacement,
2004
# socket_wrapper(), if socketfd was set.
2005
1507
socketserver.TCPServer.__init__(self, server_address,
2006
1508
RequestHandlerClass)
2007
2008
1509
def server_bind(self):
2009
1510
"""This overrides the normal server_bind() function
2010
1511
to bind to an interface if one was specified, and also NOT to
2016
1517
self.interface)
2017
1518
else:
2018
1519
try:
2019
self.socket.setsockopt(
2020
socket.SOL_SOCKET, SO_BINDTODEVICE,
2021
(self.interface + "\0").encode("utf-8"))
1520
self.socket.setsockopt(socket.SOL_SOCKET,
1521
SO_BINDTODEVICE,
1522
str(self.interface
1523
+ '\0'))
2022
1524
except socket.error as error:
2023
if error.errno == errno.EPERM:
2024
logger.error("No permission to bind to"
2025
" interface %s", self.interface)
2026
elif error.errno == errno.ENOPROTOOPT:
1525
if error[0] == errno.EPERM:
1526
logger.error("No permission to"
1527
" bind to interface %s",
1528
self.interface)
1529
elif error[0] == errno.ENOPROTOOPT:
2027
1530
logger.error("SO_BINDTODEVICE not available;"
2028
1531
" cannot bind to interface %s",
2029
1532
self.interface)
2030
elif error.errno == errno.ENODEV:
2031
logger.error("Interface %s does not exist,"
2032
" cannot bind", self.interface)
2033
1533
else:
2034
1534
raise
2035
1535
# Only bind(2) the socket if we really need to.
2038
1538
if self.address_family == socket.AF_INET6:
2039
1539
any_address = "::" # in6addr_any
2040
1540
else:
2041
any_address = "0.0.0.0" # INADDR_ANY
1541
any_address = socket.INADDR_ANY
2042
1542
self.server_address = (any_address,
2043
1543
self.server_address[1])
2044
1544
elif not self.server_address[1]:
2045
self.server_address = (self.server_address[0], 0)
1545
self.server_address = (self.server_address[0],
1546
0)
2046
1547
# if self.interface:
2047
1548
# self.server_address = (self.server_address[0],
2048
1549
# 0, # port
2062
1563
2063
1564
Assumes a gobject.MainLoop event loop.
2064
1565
"""
2065
2066
1566
def __init__(self, server_address, RequestHandlerClass,
2067
interface=None,
2068
use_ipv6=True,
2069
clients=None,
2070
gnutls_priority=None,
2071
use_dbus=True,
2072
socketfd=None):
1567
interface=None, use_ipv6=True, clients=None,
1568
gnutls_priority=None, use_dbus=True):
2073
1569
self.enabled = False
2074
1570
self.clients = clients
2075
1571
if self.clients is None:
2076
self.clients = {}
1572
self.clients = set()
2077
1573
self.use_dbus = use_dbus
2078
1574
self.gnutls_priority = gnutls_priority
2079
1575
IPv6_TCPServer.__init__(self, server_address,
2080
1576
RequestHandlerClass,
2081
1577
interface = interface,
2082
use_ipv6 = use_ipv6,
2083
socketfd = socketfd)
2084
1578
use_ipv6 = use_ipv6)
2085
1579
def server_activate(self):
2086
1580
if self.enabled:
2087
1581
return socketserver.TCPServer.server_activate(self)
2088
2089
1582
def enable(self):
2090
1583
self.enabled = True
2091
2092
def add_pipe(self, parent_pipe, proc):
1584
def add_pipe(self, parent_pipe):
2093
1585
# Call "handle_ipc" for both data and EOF events
2094
gobject.io_add_watch(
2095
parent_pipe.fileno(),
2096
gobject.IO_IN | gobject.IO_HUP,
2097
functools.partial(self.handle_ipc,
2098
parent_pipe = parent_pipe,
2099
proc = proc))
2100
2101
def handle_ipc(self, source, condition,
2102
parent_pipe=None,
2103
proc = None,
1586
gobject.io_add_watch(parent_pipe.fileno(),
1587
gobject.IO_IN | gobject.IO_HUP,
1588
functools.partial(self.handle_ipc,
1589
parent_pipe = parent_pipe))
1590
1591
def handle_ipc(self, source, condition, parent_pipe=None,
2104
1592
client_object=None):
2105
# error, or the other end of multiprocessing.Pipe has closed
2106
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2107
# Wait for other process to exit
2108
proc.join()
1593
condition_names = {
1594
gobject.IO_IN: "IN", # There is data to read.
1595
gobject.IO_OUT: "OUT", # Data can be written (without
1596
# blocking).
1597
gobject.IO_PRI: "PRI", # There is urgent data to read.
1598
gobject.IO_ERR: "ERR", # Error condition.
1599
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1600
# broken, usually for pipes and
1601
# sockets).
1602
}
1603
conditions_string = ' | '.join(name
1604
for cond, name in
1605
condition_names.iteritems()
1606
if cond & condition)
1607
# error or the other end of multiprocessing.Pipe has closed
1608
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2109
1609
return False
2110
1610
2111
1611
# Read a request from the child
2116
1616
fpr = request[1]
2117
1617
address = request[2]
2118
1618
2119
for c in self.clients.itervalues():
1619
for c in self.clients:
2120
1620
if c.fingerprint == fpr:
2121
1621
client = c
2122
1622
break
2125
1625
"dress: %s", fpr, address)
2126
1626
if self.use_dbus:
2127
1627
# Emit D-Bus signal
2128
mandos_dbus_service.ClientNotFound(fpr,
2129
address[0])
1628
mandos_dbus_service.ClientNotFound(fpr, address[0])
2130
1629
parent_pipe.send(False)
2131
1630
return False
2132
1631
2133
gobject.io_add_watch(
2134
parent_pipe.fileno(),
2135
gobject.IO_IN | gobject.IO_HUP,
2136
functools.partial(self.handle_ipc,
2137
parent_pipe = parent_pipe,
2138
proc = proc,
2139
client_object = client))
1632
gobject.io_add_watch(parent_pipe.fileno(),
1633
gobject.IO_IN | gobject.IO_HUP,
1634
functools.partial(self.handle_ipc,
1635
parent_pipe = parent_pipe,
1636
client_object = client))
2140
1637
parent_pipe.send(True)
2141
# remove the old hook in favor of the new above hook on
2142
# same fileno
1638
# remove the old hook in favor of the new above hook on same fileno
2143
1639
return False
2144
1640
if command == 'funcall':
2145
1641
funcname = request[1]
2146
1642
args = request[2]
2147
1643
kwargs = request[3]
2148
1644
2149
parent_pipe.send(('data', getattr(client_object,
2150
funcname)(*args,
2151
**kwargs)))
2152
1645
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
1646
2153
1647
if command == 'getattr':
2154
1648
attrname = request[1]
2155
if isinstance(client_object.__getattribute__(attrname),
2156
collections.Callable):
2157
parent_pipe.send(('function', ))
1649
if callable(client_object.__getattribute__(attrname)):
1650
parent_pipe.send(('function',))
2158
1651
else:
2159
parent_pipe.send((
2160
'data', client_object.__getattribute__(attrname)))
1652
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
2161
1653
2162
1654
if command == 'setattr':
2163
1655
attrname = request[1]
2164
1656
value = request[2]
2165
1657
setattr(client_object, attrname, value)
2166
1658
2167
1659
return True
2168
1660
2169
1661
2170
def rfc3339_duration_to_delta(duration):
2171
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2172
2173
>>> rfc3339_duration_to_delta("P7D")
2174
datetime.timedelta(7)
2175
>>> rfc3339_duration_to_delta("PT60S")
2176
datetime.timedelta(0, 60)
2177
>>> rfc3339_duration_to_delta("PT60M")
2178
datetime.timedelta(0, 3600)
2179
>>> rfc3339_duration_to_delta("PT24H")
2180
datetime.timedelta(1)
2181
>>> rfc3339_duration_to_delta("P1W")
2182
datetime.timedelta(7)
2183
>>> rfc3339_duration_to_delta("PT5M30S")
2184
datetime.timedelta(0, 330)
2185
>>> rfc3339_duration_to_delta("P1DT3M20S")
2186
datetime.timedelta(1, 200)
2187
"""
2188
2189
# Parsing an RFC 3339 duration with regular expressions is not
2190
# possible - there would have to be multiple places for the same
2191
# values, like seconds. The current code, while more esoteric, is
2192
# cleaner without depending on a parsing library. If Python had a
2193
# built-in library for parsing we would use it, but we'd like to
2194
# avoid excessive use of external libraries.
2195
2196
# New type for defining tokens, syntax, and semantics all-in-one
2197
Token = collections.namedtuple("Token", (
2198
"regexp", # To match token; if "value" is not None, must have
2199
# a "group" containing digits
2200
"value", # datetime.timedelta or None
2201
"followers")) # Tokens valid after this token
2202
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2203
# the "duration" ABNF definition in RFC 3339, Appendix A.
2204
token_end = Token(re.compile(r"$"), None, frozenset())
2205
token_second = Token(re.compile(r"(\d+)S"),
2206
datetime.timedelta(seconds=1),
2207
frozenset((token_end, )))
2208
token_minute = Token(re.compile(r"(\d+)M"),
2209
datetime.timedelta(minutes=1),
2210
frozenset((token_second, token_end)))
2211
token_hour = Token(re.compile(r"(\d+)H"),
2212
datetime.timedelta(hours=1),
2213
frozenset((token_minute, token_end)))
2214
token_time = Token(re.compile(r"T"),
2215
None,
2216
frozenset((token_hour, token_minute,
2217
token_second)))
2218
token_day = Token(re.compile(r"(\d+)D"),
2219
datetime.timedelta(days=1),
2220
frozenset((token_time, token_end)))
2221
token_month = Token(re.compile(r"(\d+)M"),
2222
datetime.timedelta(weeks=4),
2223
frozenset((token_day, token_end)))
2224
token_year = Token(re.compile(r"(\d+)Y"),
2225
datetime.timedelta(weeks=52),
2226
frozenset((token_month, token_end)))
2227
token_week = Token(re.compile(r"(\d+)W"),
2228
datetime.timedelta(weeks=1),
2229
frozenset((token_end, )))
2230
token_duration = Token(re.compile(r"P"), None,
2231
frozenset((token_year, token_month,
2232
token_day, token_time,
2233
token_week)))
2234
# Define starting values
2235
value = datetime.timedelta() # Value so far
2236
found_token = None
2237
followers = frozenset((token_duration, )) # Following valid tokens
2238
s = duration # String left to parse
2239
# Loop until end token is found
2240
while found_token is not token_end:
2241
# Search for any currently valid tokens
2242
for token in followers:
2243
match = token.regexp.match(s)
2244
if match is not None:
2245
# Token found
2246
if token.value is not None:
2247
# Value found, parse digits
2248
factor = int(match.group(1), 10)
2249
# Add to value so far
2250
value += factor * token.value
2251
# Strip token from string
2252
s = token.regexp.sub("", s, 1)
2253
# Go to found token
2254
found_token = token
2255
# Set valid next tokens
2256
followers = found_token.followers
2257
break
2258
else:
2259
# No currently valid tokens were found
2260
raise ValueError("Invalid RFC 3339 duration: {!r}"
2261
.format(duration))
2262
# End token found
2263
return value
2264
2265
2266
1662
def string_to_delta(interval):
2267
1663
"""Parse a string and return a datetime.timedelta
2268
1664
2279
1675
>>> string_to_delta('5m 30s')
2280
1676
datetime.timedelta(0, 330)
2281
1677
"""
2282
2283
try:
2284
return rfc3339_duration_to_delta(interval)
2285
except ValueError:
2286
pass
2287
2288
1678
timevalue = datetime.timedelta(0)
2289
1679
for s in interval.split():
2290
1680
try:
2291
suffix = s[-1]
1681
suffix = unicode(s[-1])
2292
1682
value = int(s[:-1])
2293
1683
if suffix == "d":
2294
1684
delta = datetime.timedelta(value)
2301
1691
elif suffix == "w":
2302
1692
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2303
1693
else:
2304
raise ValueError("Unknown suffix {!r}".format(suffix))
2305
except IndexError as e:
1694
raise ValueError("Unknown suffix %r" % suffix)
1695
except (ValueError, IndexError) as e:
2306
1696
raise ValueError(*(e.args))
2307
1697
timevalue += delta
2308
1698
return timevalue
2309
1699
2310
1700
1701
def if_nametoindex(interface):
1702
"""Call the C function if_nametoindex(), or equivalent
1703
1704
Note: This function cannot accept a unicode string."""
1705
global if_nametoindex
1706
try:
1707
if_nametoindex = (ctypes.cdll.LoadLibrary
1708
(ctypes.util.find_library("c"))
1709
.if_nametoindex)
1710
except (OSError, AttributeError):
1711
logger.warning("Doing if_nametoindex the hard way")
1712
def if_nametoindex(interface):
1713
"Get an interface index the hard way, i.e. using fcntl()"
1714
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1715
with contextlib.closing(socket.socket()) as s:
1716
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1717
struct.pack(str("16s16x"),
1718
interface))
1719
interface_index = struct.unpack(str("I"),
1720
ifreq[16:20])[0]
1721
return interface_index
1722
return if_nametoindex(interface)
1723
1724
2311
1725
def daemon(nochdir = False, noclose = False):
2312
1726
"""See daemon(3). Standard BSD Unix function.
2313
1727
2321
1735
sys.exit()
2322
1736
if not noclose:
2323
1737
# Close all standard open file descriptors
2324
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1738
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2325
1739
if not stat.S_ISCHR(os.fstat(null).st_mode):
2326
1740
raise OSError(errno.ENODEV,
2327
"{} not a character device"
2328
.format(os.devnull))
1741
"%s not a character device"
1742
% os.path.devnull)
2329
1743
os.dup2(null, sys.stdin.fileno())
2330
1744
os.dup2(null, sys.stdout.fileno())
2331
1745
os.dup2(null, sys.stderr.fileno())
2340
1754
2341
1755
parser = argparse.ArgumentParser()
2342
1756
parser.add_argument("-v", "--version", action="version",
2343
version = "%(prog)s {}".format(version),
1757
version = "%%(prog)s %s" % version,
2344
1758
help="show version number and exit")
2345
1759
parser.add_argument("-i", "--interface", metavar="IF",
2346
1760
help="Bind to interface IF")
2352
1766
help="Run self-test")
2353
1767
parser.add_argument("--debug", action="store_true",
2354
1768
help="Debug mode; run in foreground and log"
2355
" to terminal", default=None)
1769
" to terminal")
2356
1770
parser.add_argument("--debuglevel", metavar="LEVEL",
2357
1771
help="Debug level for stdout output")
2358
1772
parser.add_argument("--priority", help="GnuTLS"
2365
1779
" files")
2366
1780
parser.add_argument("--no-dbus", action="store_false",
2367
1781
dest="use_dbus", help="Do not provide D-Bus"
2368
" system bus interface", default=None)
1782
" system bus interface")
2369
1783
parser.add_argument("--no-ipv6", action="store_false",
2370
dest="use_ipv6", help="Do not use IPv6",
2371
default=None)
2372
parser.add_argument("--no-restore", action="store_false",
2373
dest="restore", help="Do not restore stored"
2374
" state", default=None)
2375
parser.add_argument("--socket", type=int,
2376
help="Specify a file descriptor to a network"
2377
" socket to use instead of creating one")
2378
parser.add_argument("--statedir", metavar="DIR",
2379
help="Directory to save/restore state in")
2380
parser.add_argument("--foreground", action="store_true",
2381
help="Run in foreground", default=None)
2382
parser.add_argument("--no-zeroconf", action="store_false",
2383
dest="zeroconf", help="Do not use Zeroconf",
2384
default=None)
2385
1784
dest="use_ipv6", help="Do not use IPv6")
2386
1785
options = parser.parse_args()
2387
1786
2388
1787
if options.check:
2389
1788
import doctest
2390
fail_count, test_count = doctest.testmod()
2391
sys.exit(os.EX_OK if fail_count == 0 else 1)
1789
doctest.testmod()
1790
sys.exit()
2392
1791
2393
1792
# Default values for config file for server-global settings
2394
1793
server_defaults = { "interface": "",
2396
1795
"port": "",
2397
1796
"debug": "False",
2398
1797
"priority":
2399
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2400
":+SIGN-DSA-SHA256",
1798
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2401
1799
"servicename": "Mandos",
2402
1800
"use_dbus": "True",
2403
1801
"use_ipv6": "True",
2404
1802
"debuglevel": "",
2405
"restore": "True",
2406
"socket": "",
2407
"statedir": "/var/lib/mandos",
2408
"foreground": "False",
2409
"zeroconf": "True",
2410
}
1803
}
2411
1804
2412
1805
# Parse config file for server-global settings
2413
1806
server_config = configparser.SafeConfigParser(server_defaults)
2414
1807
del server_defaults
2415
server_config.read(os.path.join(options.configdir, "mandos.conf"))
1808
server_config.read(os.path.join(options.configdir,
1809
"mandos.conf"))
2416
1810
# Convert the SafeConfigParser object to a dict
2417
1811
server_settings = server_config.defaults()
2418
1812
# Use the appropriate methods on the non-string config options
2419
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
1813
for option in ("debug", "use_dbus", "use_ipv6"):
2420
1814
server_settings[option] = server_config.getboolean("DEFAULT",
2421
1815
option)
2422
1816
if server_settings["port"]:
2423
1817
server_settings["port"] = server_config.getint("DEFAULT",
2424
1818
"port")
2425
if server_settings["socket"]:
2426
server_settings["socket"] = server_config.getint("DEFAULT",
2427
"socket")
2428
# Later, stdin will, and stdout and stderr might, be dup'ed
2429
# over with an opened os.devnull. But we don't want this to
2430
# happen with a supplied network socket.
2431
if 0 <= server_settings["socket"] <= 2:
2432
server_settings["socket"] = os.dup(server_settings
2433
["socket"])
2434
1819
del server_config
2435
1820
2436
1821
# Override the settings from the config file with command line
2437
1822
# options, if set.
2438
1823
for option in ("interface", "address", "port", "debug",
2439
"priority", "servicename", "configdir", "use_dbus",
2440
"use_ipv6", "debuglevel", "restore", "statedir",
2441
"socket", "foreground", "zeroconf"):
1824
"priority", "servicename", "configdir",
1825
"use_dbus", "use_ipv6", "debuglevel"):
2442
1826
value = getattr(options, option)
2443
1827
if value is not None:
2444
1828
server_settings[option] = value
2445
1829
del options
2446
1830
# Force all strings to be unicode
2447
1831
for option in server_settings.keys():
2448
if isinstance(server_settings[option], bytes):
2449
server_settings[option] = (server_settings[option]
2450
.decode("utf-8"))
2451
# Force all boolean options to be boolean
2452
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2453
"foreground", "zeroconf"):
2454
server_settings[option] = bool(server_settings[option])
2455
# Debug implies foreground
2456
if server_settings["debug"]:
2457
server_settings["foreground"] = True
1832
if type(server_settings[option]) is str:
1833
server_settings[option] = unicode(server_settings[option])
2458
1834
# Now we have our good server settings in "server_settings"
2459
1835
2460
1836
##################################################################
2461
1837
2462
if (not server_settings["zeroconf"]
2463
and not (server_settings["port"]
2464
or server_settings["socket"] != "")):
2465
parser.error("Needs port or socket to work without Zeroconf")
2466
2467
1838
# For convenience
2468
1839
debug = server_settings["debug"]
2469
1840
debuglevel = server_settings["debuglevel"]
2470
1841
use_dbus = server_settings["use_dbus"]
2471
1842
use_ipv6 = server_settings["use_ipv6"]
2472
stored_state_path = os.path.join(server_settings["statedir"],
2473
stored_state_file)
2474
foreground = server_settings["foreground"]
2475
zeroconf = server_settings["zeroconf"]
2476
2477
if debug:
2478
initlogger(debug, logging.DEBUG)
2479
else:
2480
if not debuglevel:
2481
initlogger(debug)
2482
else:
2483
level = getattr(logging, debuglevel.upper())
2484
initlogger(debug, level)
2485
1843
2486
1844
if server_settings["servicename"] != "Mandos":
2487
syslogger.setFormatter(
2488
logging.Formatter('Mandos ({}) [%(process)d]:'
2489
' %(levelname)s: %(message)s'.format(
2490
server_settings["servicename"])))
1845
syslogger.setFormatter(logging.Formatter
1846
('Mandos (%s) [%%(process)d]:'
1847
' %%(levelname)s: %%(message)s'
1848
% server_settings["servicename"]))
2491
1849
2492
1850
# Parse config file with clients
2493
client_config = configparser.SafeConfigParser(Client
2494
.client_defaults)
1851
client_defaults = { "timeout": "5m",
1852
"extended_timeout": "15m",
1853
"interval": "2m",
1854
"checker": "fping -q -- %%(host)s",
1855
"host": "",
1856
"approval_delay": "0s",
1857
"approval_duration": "1s",
1858
}
1859
client_config = configparser.SafeConfigParser(client_defaults)
2495
1860
client_config.read(os.path.join(server_settings["configdir"],
2496
1861
"clients.conf"))
2497
1862
2498
1863
global mandos_dbus_service
2499
1864
mandos_dbus_service = None
2500
1865
2501
socketfd = None
2502
if server_settings["socket"] != "":
2503
socketfd = server_settings["socket"]
2504
tcp_server = MandosServer(
2505
(server_settings["address"], server_settings["port"]),
2506
ClientHandler,
2507
interface=(server_settings["interface"] or None),
2508
use_ipv6=use_ipv6,
2509
gnutls_priority=server_settings["priority"],
2510
use_dbus=use_dbus,
2511
socketfd=socketfd)
2512
if not foreground:
2513
pidfilename = "/run/mandos.pid"
2514
if not os.path.isdir("/run/."):
2515
pidfilename = "/var/run/mandos.pid"
2516
pidfile = None
1866
tcp_server = MandosServer((server_settings["address"],
1867
server_settings["port"]),
1868
ClientHandler,
1869
interface=(server_settings["interface"]
1870
or None),
1871
use_ipv6=use_ipv6,
1872
gnutls_priority=
1873
server_settings["priority"],
1874
use_dbus=use_dbus)
1875
if not debug:
1876
pidfilename = "/var/run/mandos.pid"
2517
1877
try:
2518
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2519
except IOError as e:
2520
logger.error("Could not open file %r", pidfilename,
2521
exc_info=e)
1878
pidfile = open(pidfilename, "w")
1879
except IOError:
1880
logger.error("Could not open file %r", pidfilename)
2522
1881
2523
for name in ("_mandos", "mandos", "nobody"):
1882
try:
1883
uid = pwd.getpwnam("_mandos").pw_uid
1884
gid = pwd.getpwnam("_mandos").pw_gid
1885
except KeyError:
2524
1886
try:
2525
uid = pwd.getpwnam(name).pw_uid
2526
gid = pwd.getpwnam(name).pw_gid
2527
break
1887
uid = pwd.getpwnam("mandos").pw_uid
1888
gid = pwd.getpwnam("mandos").pw_gid
2528
1889
except KeyError:
2529
continue
2530
else:
2531
uid = 65534
2532
gid = 65534
1890
try:
1891
uid = pwd.getpwnam("nobody").pw_uid
1892
gid = pwd.getpwnam("nobody").pw_gid
1893
except KeyError:
1894
uid = 65534
1895
gid = 65534
2533
1896
try:
2534
1897
os.setgid(gid)
2535
1898
os.setuid(uid)
2536
1899
except OSError as error:
2537
if error.errno != errno.EPERM:
2538
raise
1900
if error[0] != errno.EPERM:
1901
raise error
2539
1902
1903
if not debug and not debuglevel:
1904
syslogger.setLevel(logging.WARNING)
1905
console.setLevel(logging.WARNING)
1906
if debuglevel:
1907
level = getattr(logging, debuglevel.upper())
1908
syslogger.setLevel(level)
1909
console.setLevel(level)
1910
2540
1911
if debug:
2541
1912
# Enable all possible GnuTLS debugging
2542
1913
2548
1919
def debug_gnutls(level, string):
2549
1920
logger.debug("GnuTLS: %s", string[:-1])
2550
1921
2551
gnutls.library.functions.gnutls_global_set_log_function(
2552
debug_gnutls)
1922
(gnutls.library.functions
1923
.gnutls_global_set_log_function(debug_gnutls))
2553
1924
2554
1925
# Redirect stdin so all checkers get /dev/null
2555
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1926
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2556
1927
os.dup2(null, sys.stdin.fileno())
2557
1928
if null > 2:
2558
1929
os.close(null)
1930
else:
1931
# No console logging
1932
logger.removeHandler(console)
2559
1933
2560
1934
# Need to fork before connecting to D-Bus
2561
if not foreground:
1935
if not debug:
2562
1936
# Close all input and output, do double fork, etc.
2563
1937
daemon()
2564
1938
2565
# multiprocessing will use threads, so before we use gobject we
2566
# need to inform gobject that threads will be used.
2567
gobject.threads_init()
2568
2569
1939
global main_loop
2570
1940
# From the Avahi example code
2571
DBusGMainLoop(set_as_default=True)
1941
DBusGMainLoop(set_as_default=True )
2572
1942
main_loop = gobject.MainLoop()
2573
1943
bus = dbus.SystemBus()
2574
1944
# End of Avahi example code
2575
1945
if use_dbus:
2576
1946
try:
2577
bus_name = dbus.service.BusName("se.recompile.Mandos",
2578
bus,
2579
do_not_queue=True)
2580
old_bus_name = dbus.service.BusName(
2581
"se.bsnet.fukt.Mandos", bus,
2582
do_not_queue=True)
2583
except dbus.exceptions.DBusException as e:
2584
logger.error("Disabling D-Bus:", exc_info=e)
1947
bus_name = dbus.service.BusName("se.bsnet.fukt.Mandos",
1948
bus, do_not_queue=True)
1949
except dbus.exceptions.NameExistsException as e:
1950
logger.error(unicode(e) + ", disabling D-Bus")
2585
1951
use_dbus = False
2586
1952
server_settings["use_dbus"] = False
2587
1953
tcp_server.use_dbus = False
2588
if zeroconf:
2589
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2590
service = AvahiServiceToSyslog(
2591
name = server_settings["servicename"],
2592
servicetype = "_mandos._tcp",
2593
protocol = protocol,
2594
bus = bus)
2595
if server_settings["interface"]:
2596
service.interface = if_nametoindex(
2597
server_settings["interface"].encode("utf-8"))
1954
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1955
service = AvahiService(name = server_settings["servicename"],
1956
servicetype = "_mandos._tcp",
1957
protocol = protocol, bus = bus)
1958
if server_settings["interface"]:
1959
service.interface = (if_nametoindex
1960
(str(server_settings["interface"])))
2598
1961
2599
1962
global multiprocessing_manager
2600
1963
multiprocessing_manager = multiprocessing.Manager()
2602
1965
client_class = Client
2603
1966
if use_dbus:
2604
1967
client_class = functools.partial(ClientDBus, bus = bus)
2605
2606
client_settings = Client.config_parser(client_config)
2607
old_client_settings = {}
2608
clients_data = {}
2609
2610
# This is used to redirect stdout and stderr for checker processes
2611
global wnull
2612
wnull = open(os.devnull, "w") # A writable /dev/null
2613
# Only used if server is running in foreground but not in debug
2614
# mode
2615
if debug or not foreground:
2616
wnull.close()
2617
2618
# Get client data and settings from last running state.
2619
if server_settings["restore"]:
2620
try:
2621
with open(stored_state_path, "rb") as stored_state:
2622
clients_data, old_client_settings = pickle.load(
2623
stored_state)
2624
os.remove(stored_state_path)
2625
except IOError as e:
2626
if e.errno == errno.ENOENT:
2627
logger.warning("Could not load persistent state:"
2628
" {}".format(os.strerror(e.errno)))
2629
else:
2630
logger.critical("Could not load persistent state:",
2631
exc_info=e)
2632
raise
2633
except EOFError as e:
2634
logger.warning("Could not load persistent state: "
2635
"EOFError:",
2636
exc_info=e)
2637
2638
with PGPEngine() as pgp:
2639
for client_name, client in clients_data.items():
2640
# Skip removed clients
2641
if client_name not in client_settings:
2642
continue
2643
2644
# Decide which value to use after restoring saved state.
2645
# We have three different values: Old config file,
2646
# new config file, and saved state.
2647
# New config value takes precedence if it differs from old
2648
# config value, otherwise use saved state.
2649
for name, value in client_settings[client_name].items():
2650
try:
2651
# For each value in new config, check if it
2652
# differs from the old config value (Except for
2653
# the "secret" attribute)
2654
if (name != "secret"
2655
and (value !=
2656
old_client_settings[client_name][name])):
2657
client[name] = value
2658
except KeyError:
2659
pass
2660
2661
# Clients who has passed its expire date can still be
2662
# enabled if its last checker was successful. A Client
2663
# whose checker succeeded before we stored its state is
2664
# assumed to have successfully run all checkers during
2665
# downtime.
2666
if client["enabled"]:
2667
if datetime.datetime.utcnow() >= client["expires"]:
2668
if not client["last_checked_ok"]:
2669
logger.warning(
2670
"disabling client {} - Client never "
2671
"performed a successful checker".format(
2672
client_name))
2673
client["enabled"] = False
2674
elif client["last_checker_status"] != 0:
2675
logger.warning(
2676
"disabling client {} - Client last"
2677
" checker failed with error code"
2678
" {}".format(
2679
client_name,
2680
client["last_checker_status"]))
2681
client["enabled"] = False
2682
else:
2683
client["expires"] = (
2684
datetime.datetime.utcnow()
2685
+ client["timeout"])
2686
logger.debug("Last checker succeeded,"
2687
" keeping {} enabled".format(
2688
client_name))
1968
def client_config_items(config, section):
1969
special_settings = {
1970
"approved_by_default":
1971
lambda: config.getboolean(section,
1972
"approved_by_default"),
1973
}
1974
for name, value in config.items(section):
2689
1975
try:
2690
client["secret"] = pgp.decrypt(
2691
client["encrypted_secret"],
2692
client_settings[client_name]["secret"])
2693
except PGPError:
2694
# If decryption fails, we use secret from new settings
2695
logger.debug("Failed to decrypt {} old secret".format(
2696
client_name))
2697
client["secret"] = (client_settings[client_name]
2698
["secret"])
2699
2700
# Add/remove clients based on new changes made to config
2701
for client_name in (set(old_client_settings)
2702
- set(client_settings)):
2703
del clients_data[client_name]
2704
for client_name in (set(client_settings)
2705
- set(old_client_settings)):
2706
clients_data[client_name] = client_settings[client_name]
2707
2708
# Create all client objects
2709
for client_name, client in clients_data.items():
2710
tcp_server.clients[client_name] = client_class(
2711
name = client_name,
2712
settings = client,
2713
server_settings = server_settings)
2714
1976
yield (name, special_settings[name]())
1977
except KeyError:
1978
yield (name, value)
1979
1980
tcp_server.clients.update(set(
1981
client_class(name = section,
1982
config= dict(client_config_items(
1983
client_config, section)))
1984
for section in client_config.sections()))
2715
1985
if not tcp_server.clients:
2716
1986
logger.warning("No clients defined")
2717
2718
if not foreground:
2719
if pidfile is not None:
2720
pid = os.getpid()
2721
try:
2722
with pidfile:
2723
print(pid, file=pidfile)
2724
except IOError:
2725
logger.error("Could not write to file %r with PID %d",
2726
pidfilename, pid)
2727
del pidfile
1987
1988
if not debug:
1989
try:
1990
with pidfile:
1991
pid = os.getpid()
1992
pidfile.write(str(pid) + "\n".encode("utf-8"))
1993
del pidfile
1994
except IOError:
1995
logger.error("Could not write to file %r with PID %d",
1996
pidfilename, pid)
1997
except NameError:
1998
# "pidfile" was never created
1999
pass
2728
2000
del pidfilename
2729
2001
2002
signal.signal(signal.SIGINT, signal.SIG_IGN)
2003
2730
2004
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2731
2005
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2732
2006
2733
2007
if use_dbus:
2734
2735
@alternate_dbus_interfaces(
2736
{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
2737
class MandosDBusService(DBusObjectWithProperties):
2008
class MandosDBusService(dbus.service.Object):
2738
2009
"""A D-Bus proxy object"""
2739
2740
2010
def __init__(self):
2741
2011
dbus.service.Object.__init__(self, bus, "/")
2742
2743
_interface = "se.recompile.Mandos"
2744
2745
@dbus_interface_annotations(_interface)
2746
def _foo(self):
2747
return {
2748
"org.freedesktop.DBus.Property.EmitsChangedSignal":
2749
"false" }
2012
_interface = "se.bsnet.fukt.Mandos"
2750
2013
2751
2014
@dbus.service.signal(_interface, signature="o")
2752
2015
def ClientAdded(self, objpath):
2766
2029
@dbus.service.method(_interface, out_signature="ao")
2767
2030
def GetAllClients(self):
2768
2031
"D-Bus method"
2769
return dbus.Array(c.dbus_object_path for c in
2770
tcp_server.clients.itervalues())
2032
return dbus.Array(c.dbus_object_path
2033
for c in tcp_server.clients)
2771
2034
2772
2035
@dbus.service.method(_interface,
2773
2036
out_signature="a{oa{sv}}")
2774
2037
def GetAllClientsWithProperties(self):
2775
2038
"D-Bus method"
2776
2039
return dbus.Dictionary(
2777
{ c.dbus_object_path: c.GetAll("")
2778
for c in tcp_server.clients.itervalues() },
2040
((c.dbus_object_path, c.GetAll(""))
2041
for c in tcp_server.clients),
2779
2042
signature="oa{sv}")
2780
2043
2781
2044
@dbus.service.method(_interface, in_signature="o")
2782
2045
def RemoveClient(self, object_path):
2783
2046
"D-Bus method"
2784
for c in tcp_server.clients.itervalues():
2047
for c in tcp_server.clients:
2785
2048
if c.dbus_object_path == object_path:
2786
del tcp_server.clients[c.name]
2049
tcp_server.clients.remove(c)
2787
2050
c.remove_from_connection()
2788
2051
# Don't signal anything except ClientRemoved
2789
2052
c.disable(quiet=True)
2798
2061
2799
2062
def cleanup():
2800
2063
"Cleanup function; run on exit"
2801
if zeroconf:
2802
service.cleanup()
2803
2804
multiprocessing.active_children()
2805
wnull.close()
2806
if not (tcp_server.clients or client_settings):
2807
return
2808
2809
# Store client before exiting. Secrets are encrypted with key
2810
# based on what config file has. If config file is
2811
# removed/edited, old secret will thus be unrecovable.
2812
clients = {}
2813
with PGPEngine() as pgp:
2814
for client in tcp_server.clients.itervalues():
2815
key = client_settings[client.name]["secret"]
2816
client.encrypted_secret = pgp.encrypt(client.secret,
2817
key)
2818
client_dict = {}
2819
2820
# A list of attributes that can not be pickled
2821
# + secret.
2822
exclude = { "bus", "changedstate", "secret",
2823
"checker", "server_settings" }
2824
for name, typ in inspect.getmembers(dbus.service
2825
.Object):
2826
exclude.add(name)
2827
2828
client_dict["encrypted_secret"] = (client
2829
.encrypted_secret)
2830
for attr in client.client_structure:
2831
if attr not in exclude:
2832
client_dict[attr] = getattr(client, attr)
2833
2834
clients[client.name] = client_dict
2835
del client_settings[client.name]["secret"]
2836
2837
try:
2838
with tempfile.NamedTemporaryFile(
2839
mode='wb',
2840
suffix=".pickle",
2841
prefix='clients-',
2842
dir=os.path.dirname(stored_state_path),
2843
delete=False) as stored_state:
2844
pickle.dump((clients, client_settings), stored_state)
2845
tempname = stored_state.name
2846
os.rename(tempname, stored_state_path)
2847
except (IOError, OSError) as e:
2848
if not debug:
2849
try:
2850
os.remove(tempname)
2851
except NameError:
2852
pass
2853
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
2854
logger.warning("Could not save persistent state: {}"
2855
.format(os.strerror(e.errno)))
2856
else:
2857
logger.warning("Could not save persistent state:",
2858
exc_info=e)
2859
raise
2860
2861
# Delete all clients, and settings from config
2064
service.cleanup()
2065
2862
2066
while tcp_server.clients:
2863
name, client = tcp_server.clients.popitem()
2067
client = tcp_server.clients.pop()
2864
2068
if use_dbus:
2865
2069
client.remove_from_connection()
2070
client.disable_hook = None
2866
2071
# Don't signal anything except ClientRemoved
2867
2072
client.disable(quiet=True)
2868
2073
if use_dbus:
2869
2074
# Emit D-Bus signal
2870
mandos_dbus_service.ClientRemoved(
2871
client.dbus_object_path, client.name)
2872
client_settings.clear()
2075
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
2076
client.name)
2873
2077
2874
2078
atexit.register(cleanup)
2875
2079
2876
for client in tcp_server.clients.itervalues():
2080
for client in tcp_server.clients:
2877
2081
if use_dbus:
2878
2082
# Emit D-Bus signal
2879
2083
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2880
# Need to initiate checking of clients
2881
if client.enabled:
2882
client.init_checker()
2084
client.enable()
2883
2085
2884
2086
tcp_server.enable()
2885
2087
tcp_server.server_activate()
2886
2088
2887
2089
# Find out what port we got
2888
if zeroconf:
2889
service.port = tcp_server.socket.getsockname()[1]
2090
service.port = tcp_server.socket.getsockname()[1]
2890
2091
if use_ipv6:
2891
2092
logger.info("Now listening on address %r, port %d,"
2892
" flowinfo %d, scope_id %d",
2893
*tcp_server.socket.getsockname())
2093
" flowinfo %d, scope_id %d"
2094
% tcp_server.socket.getsockname())
2894
2095
else: # IPv4
2895
logger.info("Now listening on address %r, port %d",
2896
*tcp_server.socket.getsockname())
2096
logger.info("Now listening on address %r, port %d"
2097
% tcp_server.socket.getsockname())
2897
2098
2898
2099
#service.interface = tcp_server.socket.getsockname()[3]
2899
2100
2900
2101
try:
2901
if zeroconf:
2902
# From the Avahi example code
2903
try:
2904
service.activate()
2905
except dbus.exceptions.DBusException as error:
2906
logger.critical("D-Bus Exception", exc_info=error)
2907
cleanup()
2908
sys.exit(1)
2909
# End of Avahi example code
2102
# From the Avahi example code
2103
try:
2104
service.activate()
2105
except dbus.exceptions.DBusException as error:
2106
logger.critical("DBusException: %s", error)
2107
cleanup()
2108
sys.exit(1)
2109
# End of Avahi example code
2910
2110
2911
2111
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2912
2112
lambda *args, **kwargs:
2916
2116
logger.debug("Starting main loop")
2917
2117
main_loop.run()
2918
2118
except AvahiError as error:
2919
logger.critical("Avahi Error", exc_info=error)
2119
logger.critical("AvahiError: %s", error)
2920
2120
cleanup()
2921
2121
sys.exit(1)
2922
2122
except KeyboardInterrupt:
2927
2127
# Must run before the D-Bus bus name gets deregistered
2928
2128
cleanup()
2929
2129
2930
2931
2130
if __name__ == '__main__':
2932
2131
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0