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- Committer: Teddy Hogeborn
- Date: 2015-07-27 09:23:56 UTC
- Revision ID: teddy@recompile.se-20150727092356-65ul6jsiozlkjw4e
Debian bug fix for mandos-client: Remove dhparams.pem on purge.
* debian/mandos-client.postrm (purge): Bug fix: Remove dhparams.pem.
* debian/mandos-client.postrm (purge): Bug fix: Remove dhparams.pem.
- files added:
- debian/mandos-client.examples
- debian/upstream
- network-hooks.d
- plugin-helpers
- files modified:
- .bzrignore
added
removed
mandos
1
#!/usr/bin/python
1
#!/usr/bin/python2.7
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 © 2008-2011 Teddy Hogeborn
15
# Copyright © 2008-2011 Björn Påhlsson
14
# Copyright © 2008-2015 Teddy Hogeborn
15
# Copyright © 2008-2015 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
34
34
from __future__ import (division, absolute_import, print_function,
35
35
unicode_literals)
36
36
37
import SocketServer as socketserver
37
from future_builtins import *
38
39
try:
40
import SocketServer as socketserver
41
except ImportError:
42
import socketserver
38
43
import socket
39
44
import argparse
40
45
import datetime
45
50
import gnutls.library.functions
46
51
import gnutls.library.constants
47
52
import gnutls.library.types
48
import ConfigParser as configparser
53
try:
54
import ConfigParser as configparser
55
except ImportError:
56
import configparser
49
57
import sys
50
58
import re
51
59
import os
60
68
import struct
61
69
import fcntl
62
70
import functools
63
import cPickle as pickle
71
try:
72
import cPickle as pickle
73
except ImportError:
74
import pickle
64
75
import multiprocessing
65
76
import types
66
77
import binascii
67
78
import tempfile
79
import itertools
80
import collections
81
import codecs
68
82
69
83
import dbus
70
84
import dbus.service
71
import gobject
85
try:
86
import gobject
87
except ImportError:
88
from gi.repository import GObject as gobject
72
89
import avahi
73
90
from dbus.mainloop.glib import DBusGMainLoop
74
91
import ctypes
75
92
import ctypes.util
76
93
import xml.dom.minidom
77
94
import inspect
78
import GnuPGInterface
79
95
80
96
try:
81
97
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
85
101
except ImportError:
86
102
SO_BINDTODEVICE = None
87
103
104
if sys.version_info.major == 2:
105
str = unicode
88
106
89
version = "1.4.1"
107
version = "1.6.9"
90
108
stored_state_file = "clients.pickle"
91
109
92
110
logger = logging.getLogger()
93
syslogger = (logging.handlers.SysLogHandler
94
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
95
address = str("/dev/log")))
111
syslogger = None
96
112
97
113
try:
98
if_nametoindex = (ctypes.cdll.LoadLibrary
99
(ctypes.util.find_library("c"))
100
.if_nametoindex)
114
if_nametoindex = ctypes.cdll.LoadLibrary(
115
ctypes.util.find_library("c")).if_nametoindex
101
116
except (OSError, AttributeError):
117
102
118
def if_nametoindex(interface):
103
119
"Get an interface index the hard way, i.e. using fcntl()"
104
120
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
105
121
with contextlib.closing(socket.socket()) as s:
106
122
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
107
struct.pack(str("16s16x"),
108
interface))
109
interface_index = struct.unpack(str("I"),
110
ifreq[16:20])[0]
123
struct.pack(b"16s16x", interface))
124
interface_index = struct.unpack("I", ifreq[16:20])[0]
111
125
return interface_index
112
126
113
127
114
def initlogger(level=logging.WARNING):
128
def initlogger(debug, level=logging.WARNING):
115
129
"""init logger and add loglevel"""
116
130
131
global syslogger
132
syslogger = (logging.handlers.SysLogHandler(
133
facility = logging.handlers.SysLogHandler.LOG_DAEMON,
134
address = "/dev/log"))
117
135
syslogger.setFormatter(logging.Formatter
118
136
('Mandos [%(process)d]: %(levelname)s:'
119
137
' %(message)s'))
120
138
logger.addHandler(syslogger)
121
139
122
console = logging.StreamHandler()
123
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
124
' [%(process)d]:'
125
' %(levelname)s:'
126
' %(message)s'))
127
logger.addHandler(console)
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)
128
147
logger.setLevel(level)
129
148
130
149
131
class CryptoError(Exception):
150
class PGPError(Exception):
151
"""Exception if encryption/decryption fails"""
132
152
pass
133
153
134
154
135
class Crypto(object):
155
class PGPEngine(object):
136
156
"""A simple class for OpenPGP symmetric encryption & decryption"""
157
137
158
def __init__(self):
138
self.gnupg = GnuPGInterface.GnuPG()
139
159
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
140
self.gnupg = GnuPGInterface.GnuPG()
141
self.gnupg.options.meta_interactive = False
142
self.gnupg.options.homedir = self.tempdir
143
self.gnupg.options.extra_args.extend(['--force-mdc',
144
'--quiet'])
160
self.gnupgargs = ['--batch',
161
'--home', self.tempdir,
162
'--force-mdc',
163
'--quiet',
164
'--no-use-agent']
145
165
146
166
def __enter__(self):
147
167
return self
148
168
149
def __exit__ (self, exc_type, exc_value, traceback):
169
def __exit__(self, exc_type, exc_value, traceback):
150
170
self._cleanup()
151
171
return False
152
172
169
189
def password_encode(self, password):
170
190
# Passphrase can not be empty and can not contain newlines or
171
191
# NUL bytes. So we prefix it and hex encode it.
172
return b"mandos" + binascii.hexlify(password)
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
173
199
174
200
def encrypt(self, data, password):
175
self.gnupg.passphrase = self.password_encode(password)
176
with open(os.devnull) as devnull:
177
try:
178
proc = self.gnupg.run(['--symmetric'],
179
create_fhs=['stdin', 'stdout'],
180
attach_fhs={'stderr': devnull})
181
with contextlib.closing(proc.handles['stdin']) as f:
182
f.write(data)
183
with contextlib.closing(proc.handles['stdout']) as f:
184
ciphertext = f.read()
185
proc.wait()
186
except IOError as e:
187
raise CryptoError(e)
188
self.gnupg.passphrase = None
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)
189
216
return ciphertext
190
217
191
218
def decrypt(self, data, password):
192
self.gnupg.passphrase = self.password_encode(password)
193
with open(os.devnull) as devnull:
194
try:
195
proc = self.gnupg.run(['--decrypt'],
196
create_fhs=['stdin', 'stdout'],
197
attach_fhs={'stderr': devnull})
198
with contextlib.closing(proc.handles['stdin'] ) as f:
199
f.write(data)
200
with contextlib.closing(proc.handles['stdout']) as f:
201
decrypted_plaintext = f.read()
202
proc.wait()
203
except IOError as e:
204
raise CryptoError(e)
205
self.gnupg.passphrase = None
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)
206
234
return decrypted_plaintext
207
235
208
236
209
210
237
class AvahiError(Exception):
211
238
def __init__(self, value, *args, **kwargs):
212
239
self.value = value
213
super(AvahiError, self).__init__(value, *args, **kwargs)
214
def __unicode__(self):
215
return unicode(repr(self.value))
240
return super(AvahiError, self).__init__(value, *args,
241
**kwargs)
242
216
243
217
244
class AvahiServiceError(AvahiError):
218
245
pass
219
246
247
220
248
class AvahiGroupError(AvahiError):
221
249
pass
222
250
229
257
Used to optionally bind to the specified interface.
230
258
name: string; Example: 'Mandos'
231
259
type: string; Example: '_mandos._tcp'.
232
See <http://www.dns-sd.org/ServiceTypes.html>
260
See <https://www.iana.org/assignments/service-names-port-numbers>
233
261
port: integer; what port to announce
234
262
TXT: list of strings; TXT record for the service
235
263
domain: string; Domain to publish on, default to .local if empty.
241
269
server: D-Bus Server
242
270
bus: dbus.SystemBus()
243
271
"""
244
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
245
servicetype = None, port = None, TXT = None,
246
domain = "", host = "", max_renames = 32768,
247
protocol = avahi.PROTO_UNSPEC, bus = None):
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):
248
284
self.interface = interface
249
285
self.name = name
250
286
self.type = servicetype
259
295
self.server = None
260
296
self.bus = bus
261
297
self.entry_group_state_changed_match = None
262
def rename(self):
298
299
def rename(self, remove=True):
263
300
"""Derived from the Avahi example code"""
264
301
if self.rename_count >= self.max_renames:
265
302
logger.critical("No suitable Zeroconf service name found"
266
303
" after %i retries, exiting.",
267
304
self.rename_count)
268
305
raise AvahiServiceError("Too many renames")
269
self.name = unicode(self.server
270
.GetAlternativeServiceName(self.name))
306
self.name = str(
307
self.server.GetAlternativeServiceName(self.name))
308
self.rename_count += 1
271
309
logger.info("Changing Zeroconf service name to %r ...",
272
310
self.name)
273
self.remove()
311
if remove:
312
self.remove()
274
313
try:
275
314
self.add()
276
315
except dbus.exceptions.DBusException as error:
277
logger.critical("DBusException: %s", error)
278
self.cleanup()
279
os._exit(1)
280
self.rename_count += 1
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
281
325
def remove(self):
282
326
"""Derived from the Avahi example code"""
283
327
if self.entry_group_state_changed_match is not None:
285
329
self.entry_group_state_changed_match = None
286
330
if self.group is not None:
287
331
self.group.Reset()
332
288
333
def add(self):
289
334
"""Derived from the Avahi example code"""
290
335
self.remove()
307
352
dbus.UInt16(self.port),
308
353
avahi.string_array_to_txt_array(self.TXT))
309
354
self.group.Commit()
355
310
356
def entry_group_state_changed(self, state, error):
311
357
"""Derived from the Avahi example code"""
312
358
logger.debug("Avahi entry group state change: %i", state)
318
364
self.rename()
319
365
elif state == avahi.ENTRY_GROUP_FAILURE:
320
366
logger.critical("Avahi: Error in group state changed %s",
321
unicode(error))
322
raise AvahiGroupError("State changed: %s"
323
% unicode(error))
367
str(error))
368
raise AvahiGroupError("State changed: {!s}".format(error))
369
324
370
def cleanup(self):
325
371
"""Derived from the Avahi example code"""
326
372
if self.group is not None:
331
377
pass
332
378
self.group = None
333
379
self.remove()
380
334
381
def server_state_changed(self, state, error=None):
335
382
"""Derived from the Avahi example code"""
336
383
logger.debug("Avahi server state change: %i", state)
337
bad_states = { avahi.SERVER_INVALID:
338
"Zeroconf server invalid",
339
avahi.SERVER_REGISTERING: None,
340
avahi.SERVER_COLLISION:
341
"Zeroconf server name collision",
342
avahi.SERVER_FAILURE:
343
"Zeroconf server failure" }
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
}
344
390
if state in bad_states:
345
391
if bad_states[state] is not None:
346
392
if error is None:
349
395
logger.error(bad_states[state] + ": %r", error)
350
396
self.cleanup()
351
397
elif state == avahi.SERVER_RUNNING:
352
self.add()
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)
353
410
else:
354
411
if error is None:
355
412
logger.debug("Unknown state: %r", state)
356
413
else:
357
414
logger.debug("Unknown state: %r: %r", state, error)
415
358
416
def activate(self):
359
417
"""Derived from the Avahi example code"""
360
418
if self.server is None:
364
422
follow_name_owner_changes=True),
365
423
avahi.DBUS_INTERFACE_SERVER)
366
424
self.server.connect_to_signal("StateChanged",
367
self.server_state_changed)
425
self.server_state_changed)
368
426
self.server_state_changed(self.server.GetState())
369
427
428
370
429
class AvahiServiceToSyslog(AvahiService):
371
def rename(self):
430
def rename(self, *args, **kwargs):
372
431
"""Add the new name to the syslog messages"""
373
ret = AvahiService.rename(self)
374
syslogger.setFormatter(logging.Formatter
375
('Mandos (%s) [%%(process)d]:'
376
' %%(levelname)s: %%(message)s'
377
% self.name))
432
ret = AvahiService.rename(self, *args, **kwargs)
433
syslogger.setFormatter(logging.Formatter(
434
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
435
.format(self.name)))
378
436
return ret
379
437
380
def _timedelta_to_milliseconds(td):
381
"Convert a datetime.timedelta() to milliseconds"
382
return ((td.days * 24 * 60 * 60 * 1000)
383
+ (td.seconds * 1000)
384
+ (td.microseconds // 1000))
385
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
386
448
class Client(object):
387
449
"""A representation of a client host served by this server.
388
450
389
451
Attributes:
390
_approved: bool(); 'None' if not yet approved/disapproved
452
approved: bool(); 'None' if not yet approved/disapproved
391
453
approval_delay: datetime.timedelta(); Time to wait for approval
392
454
approval_duration: datetime.timedelta(); Duration of one approval
393
455
checker: subprocess.Popen(); a running checker process used
411
473
interval: datetime.timedelta(); How often to start a new checker
412
474
last_approval_request: datetime.datetime(); (UTC) or None
413
475
last_checked_ok: datetime.datetime(); (UTC) or None
414
415
476
last_checker_status: integer between 0 and 255 reflecting exit
416
477
status of last checker. -1 reflects crashed
417
checker, or None.
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
418
481
last_enabled: datetime.datetime(); (UTC) or None
419
482
name: string; from the config file, used in log messages and
420
483
D-Bus identifiers
421
484
secret: bytestring; sent verbatim (over TLS) to client
422
485
timeout: datetime.timedelta(); How long from last_checked_ok
423
486
until this client is disabled
424
extended_timeout: extra long timeout when password has been sent
487
extended_timeout: extra long timeout when secret has been sent
425
488
runtime_expansions: Allowed attributes for runtime expansion.
426
489
expires: datetime.datetime(); time (UTC) when a client will be
427
490
disabled, or None
491
server_settings: The server_settings dict from main()
428
492
"""
429
493
430
494
runtime_expansions = ("approval_delay", "approval_duration",
431
"created", "enabled", "fingerprint",
432
"host", "interval", "last_checked_ok",
495
"created", "enabled", "expires",
496
"fingerprint", "host", "interval",
497
"last_approval_request", "last_checked_ok",
433
498
"last_enabled", "name", "timeout")
434
435
def timeout_milliseconds(self):
436
"Return the 'timeout' attribute in milliseconds"
437
return _timedelta_to_milliseconds(self.timeout)
438
439
def extended_timeout_milliseconds(self):
440
"Return the 'extended_timeout' attribute in milliseconds"
441
return _timedelta_to_milliseconds(self.extended_timeout)
442
443
def interval_milliseconds(self):
444
"Return the 'interval' attribute in milliseconds"
445
return _timedelta_to_milliseconds(self.interval)
446
447
def approval_delay_milliseconds(self):
448
return _timedelta_to_milliseconds(self.approval_delay)
449
450
def __init__(self, name = None, config=None):
451
"""Note: the 'checker' key in 'config' sets the
452
'checker_command' attribute and *not* the 'checker'
453
attribute."""
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
511
@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):
454
562
self.name = name
455
if config is None:
456
config = {}
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
457
580
logger.debug("Creating client %r", self.name)
458
# Uppercase and remove spaces from fingerprint for later
459
# comparison purposes with return value from the fingerprint()
460
# function
461
self.fingerprint = (config["fingerprint"].upper()
462
.replace(" ", ""))
463
581
logger.debug(" Fingerprint: %s", self.fingerprint)
464
if "secret" in config:
465
self.secret = config["secret"].decode("base64")
466
elif "secfile" in config:
467
with open(os.path.expanduser(os.path.expandvars
468
(config["secfile"])),
469
"rb") as secfile:
470
self.secret = secfile.read()
471
else:
472
raise TypeError("No secret or secfile for client %s"
473
% self.name)
474
self.host = config.get("host", "")
475
self.created = datetime.datetime.utcnow()
476
self.enabled = config.get("enabled", True)
477
self.last_approval_request = None
478
if self.enabled:
479
self.last_enabled = datetime.datetime.utcnow()
480
else:
481
self.last_enabled = None
482
self.last_checked_ok = None
483
self.last_checker_status = None
484
self.timeout = string_to_delta(config["timeout"])
485
self.extended_timeout = string_to_delta(config
486
["extended_timeout"])
487
self.interval = string_to_delta(config["interval"])
582
self.created = settings.get("created",
583
datetime.datetime.utcnow())
584
585
# attributes specific for this server instance
488
586
self.checker = None
489
587
self.checker_initiator_tag = None
490
588
self.disable_initiator_tag = None
491
if self.enabled:
492
self.expires = datetime.datetime.utcnow() + self.timeout
493
else:
494
self.expires = None
495
589
self.checker_callback_tag = None
496
self.checker_command = config["checker"]
497
590
self.current_checker_command = None
498
self._approved = None
499
self.approved_by_default = config.get("approved_by_default",
500
True)
591
self.approved = None
501
592
self.approvals_pending = 0
502
self.approval_delay = string_to_delta(
503
config["approval_delay"])
504
self.approval_duration = string_to_delta(
505
config["approval_duration"])
506
self.changedstate = (multiprocessing_manager
507
.Condition(multiprocessing_manager
508
.Lock()))
509
self.client_structure = [attr for attr in
510
self.__dict__.iterkeys()
593
self.changedstate = multiprocessing_manager.Condition(
594
multiprocessing_manager.Lock())
595
self.client_structure = [attr
596
for attr in self.__dict__.iterkeys()
511
597
if not attr.startswith("_")]
512
598
self.client_structure.append("client_structure")
513
599
514
for name, t in inspect.getmembers(type(self),
515
lambda obj:
516
isinstance(obj,
517
property)):
600
for name, t in inspect.getmembers(
601
type(self), lambda obj: isinstance(obj, property)):
518
602
if not name.startswith("_"):
519
603
self.client_structure.append(name)
520
604
528
612
if getattr(self, "enabled", False):
529
613
# Already enabled
530
614
return
531
self.send_changedstate()
532
615
self.expires = datetime.datetime.utcnow() + self.timeout
533
616
self.enabled = True
534
617
self.last_enabled = datetime.datetime.utcnow()
535
618
self.init_checker()
619
self.send_changedstate()
536
620
537
621
def disable(self, quiet=True):
538
622
"""Disable this client."""
539
623
if not getattr(self, "enabled", False):
540
624
return False
541
625
if not quiet:
542
self.send_changedstate()
543
if not quiet:
544
626
logger.info("Disabling client %s", self.name)
545
if getattr(self, "disable_initiator_tag", False):
627
if getattr(self, "disable_initiator_tag", None) is not None:
546
628
gobject.source_remove(self.disable_initiator_tag)
547
629
self.disable_initiator_tag = None
548
630
self.expires = None
549
if getattr(self, "checker_initiator_tag", False):
631
if getattr(self, "checker_initiator_tag", None) is not None:
550
632
gobject.source_remove(self.checker_initiator_tag)
551
633
self.checker_initiator_tag = None
552
634
self.stop_checker()
553
635
self.enabled = False
636
if not quiet:
637
self.send_changedstate()
554
638
# Do not run this again if called by a gobject.timeout_add
555
639
return False
556
640
560
644
def init_checker(self):
561
645
# Schedule a new checker to be started an 'interval' from now,
562
646
# and every interval from then on.
563
self.checker_initiator_tag = (gobject.timeout_add
564
(self.interval_milliseconds(),
565
self.start_checker))
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)
566
652
# Schedule a disable() when 'timeout' has passed
567
self.disable_initiator_tag = (gobject.timeout_add
568
(self.timeout_milliseconds(),
569
self.disable))
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)
570
657
# Also start a new checker *right now*.
571
658
self.start_checker()
572
659
573
def checker_callback(self, pid, condition, command):
660
def checker_callback(self, source, condition, connection,
661
command):
574
662
"""The checker has completed, so take appropriate actions."""
575
663
self.checker_callback_tag = None
576
664
self.checker = None
577
if os.WIFEXITED(condition):
578
self.last_checker_status = os.WEXITSTATUS(condition)
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
579
672
if self.last_checker_status == 0:
580
673
logger.info("Checker for %(name)s succeeded",
581
674
vars(self))
582
675
self.checked_ok()
583
676
else:
584
logger.info("Checker for %(name)s failed",
585
vars(self))
677
logger.info("Checker for %(name)s failed", vars(self))
586
678
else:
587
679
self.last_checker_status = -1
680
self.last_checker_signal = -returncode
588
681
logger.warning("Checker for %(name)s crashed?",
589
682
vars(self))
590
591
def checked_ok(self, timeout=None):
592
"""Bump up the timeout for this client.
593
594
This should only be called when the client has been seen,
595
alive and well.
596
"""
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."""
597
694
if timeout is None:
598
695
timeout = self.timeout
599
self.last_checked_ok = datetime.datetime.utcnow()
600
696
if self.disable_initiator_tag is not None:
601
697
gobject.source_remove(self.disable_initiator_tag)
698
self.disable_initiator_tag = None
602
699
if getattr(self, "enabled", False):
603
self.disable_initiator_tag = (gobject.timeout_add
604
(_timedelta_to_milliseconds
605
(timeout), self.disable))
700
self.disable_initiator_tag = gobject.timeout_add(
701
int(timeout.total_seconds() * 1000), self.disable)
606
702
self.expires = datetime.datetime.utcnow() + timeout
607
703
608
704
def need_approval(self):
614
710
If a checker already exists, leave it running and do
615
711
nothing."""
616
712
# The reason for not killing a running checker is that if we
617
# did that, then if a checker (for some reason) started
618
# running slowly and taking more than 'interval' time, the
619
# client would inevitably timeout, since no checker would get
620
# a chance to run to completion. If we instead leave running
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
621
717
# checkers alone, the checker would have to take more time
622
718
# than 'timeout' for the client to be disabled, which is as it
623
719
# should be.
624
720
625
# If a checker exists, make sure it is not a zombie
626
try:
627
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
628
except (AttributeError, OSError) as error:
629
if (isinstance(error, OSError)
630
and error.errno != errno.ECHILD):
631
raise error
632
else:
633
if pid:
634
logger.warning("Checker was a zombie")
635
gobject.source_remove(self.checker_callback_tag)
636
self.checker_callback(pid, status,
637
self.current_checker_command)
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
638
725
# Start a new checker if needed
639
726
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 }
640
731
try:
641
# In case checker_command has exactly one % operator
642
command = self.checker_command % self.host
643
except TypeError:
644
# Escape attributes for the shell
645
escaped_attrs = dict(
646
(attr,
647
re.escape(unicode(str(getattr(self, attr, "")),
648
errors=
649
'replace')))
650
for attr in
651
self.runtime_expansions)
652
653
try:
654
command = self.checker_command % escaped_attrs
655
except TypeError as error:
656
logger.error('Could not format string "%s":'
657
' %s', self.checker_command, error)
658
return True # Try again later
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
659
738
self.current_checker_command = command
660
try:
661
logger.info("Starting checker %r for %s",
662
command, self.name)
663
# We don't need to redirect stdout and stderr, since
664
# in normal mode, that is already done by daemon(),
665
# and in debug mode we don't want to. (Stdin is
666
# always replaced by /dev/null.)
667
self.checker = subprocess.Popen(command,
668
close_fds=True,
669
shell=True, cwd="/")
670
self.checker_callback_tag = (gobject.child_watch_add
671
(self.checker.pid,
672
self.checker_callback,
673
data=command))
674
# The checker may have completed before the gobject
675
# watch was added. Check for this.
676
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
677
if pid:
678
gobject.source_remove(self.checker_callback_tag)
679
self.checker_callback(pid, status, command)
680
except OSError as error:
681
logger.error("Failed to start subprocess: %s",
682
error)
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)
683
764
# Re-run this periodically if run by gobject.timeout_add
684
765
return True
685
766
691
772
if getattr(self, "checker", None) is None:
692
773
return
693
774
logger.debug("Stopping checker for %(name)s", vars(self))
694
try:
695
os.kill(self.checker.pid, signal.SIGTERM)
696
#time.sleep(0.5)
697
#if self.checker.poll() is None:
698
# os.kill(self.checker.pid, signal.SIGKILL)
699
except OSError as error:
700
if error.errno != errno.ESRCH: # No such process
701
raise
775
self.checker.terminate()
702
776
self.checker = None
703
777
704
778
705
def dbus_service_property(dbus_interface, signature="v",
706
access="readwrite", byte_arrays=False):
779
def dbus_service_property(dbus_interface,
780
signature="v",
781
access="readwrite",
782
byte_arrays=False):
707
783
"""Decorators for marking methods of a DBusObjectWithProperties to
708
784
become properties on the D-Bus.
709
785
718
794
# "Set" method, so we fail early here:
719
795
if byte_arrays and signature != "ay":
720
796
raise ValueError("Byte arrays not supported for non-'ay'"
721
" signature %r" % signature)
797
" signature {!r}".format(signature))
798
722
799
def decorator(func):
723
800
func._dbus_is_property = True
724
801
func._dbus_interface = dbus_interface
729
806
func._dbus_name = func._dbus_name[:-14]
730
807
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
731
808
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
732
851
return decorator
733
852
734
853
735
854
class DBusPropertyException(dbus.exceptions.DBusException):
736
855
"""A base class for D-Bus property-related exceptions
737
856
"""
738
def __unicode__(self):
739
return unicode(str(self))
857
pass
740
858
741
859
742
860
class DBusPropertyAccessException(DBusPropertyException):
760
878
"""
761
879
762
880
@staticmethod
763
def _is_dbus_property(obj):
764
return getattr(obj, "_dbus_is_property", False)
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)
765
889
766
def _get_all_dbus_properties(self):
890
def _get_all_dbus_things(self, thing):
767
891
"""Returns a generator of (name, attribute) pairs
768
892
"""
769
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
893
return ((getattr(athing.__get__(self), "_dbus_name", name),
894
athing.__get__(self))
770
895
for cls in self.__class__.__mro__
771
for name, prop in
772
inspect.getmembers(cls, self._is_dbus_property))
896
for name, athing in
897
inspect.getmembers(cls, self._is_dbus_thing(thing)))
773
898
774
899
def _get_dbus_property(self, interface_name, property_name):
775
900
"""Returns a bound method if one exists which is a D-Bus
776
901
property with the specified name and interface.
777
902
"""
778
for cls in self.__class__.__mro__:
779
for name, value in (inspect.getmembers
780
(cls, self._is_dbus_property)):
903
for cls in self.__class__.__mro__:
904
for name, value in inspect.getmembers(
905
cls, self._is_dbus_thing("property")):
781
906
if (value._dbus_name == property_name
782
907
and value._dbus_interface == interface_name):
783
908
return value.__get__(self)
784
909
785
910
# No such property
786
raise DBusPropertyNotFound(self.dbus_object_path + ":"
787
+ interface_name + "."
788
+ property_name)
911
raise DBusPropertyNotFound("{}:{}.{}".format(
912
self.dbus_object_path, interface_name, property_name))
789
913
790
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
914
@dbus.service.method(dbus.PROPERTIES_IFACE,
915
in_signature="ss",
791
916
out_signature="v")
792
917
def Get(self, interface_name, property_name):
793
918
"""Standard D-Bus property Get() method, see D-Bus standard.
811
936
# The byte_arrays option is not supported yet on
812
937
# signatures other than "ay".
813
938
if prop._dbus_signature != "ay":
814
raise ValueError
815
value = dbus.ByteArray(''.join(unichr(byte)
816
for byte in value))
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))
817
944
prop(value)
818
945
819
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
946
@dbus.service.method(dbus.PROPERTIES_IFACE,
947
in_signature="s",
820
948
out_signature="a{sv}")
821
949
def GetAll(self, interface_name):
822
950
"""Standard D-Bus property GetAll() method, see D-Bus
825
953
Note: Will not include properties with access="write".
826
954
"""
827
955
properties = {}
828
for name, prop in self._get_all_dbus_properties():
956
for name, prop in self._get_all_dbus_things("property"):
829
957
if (interface_name
830
958
and interface_name != prop._dbus_interface):
831
959
# Interface non-empty but did not match
837
965
if not hasattr(value, "variant_level"):
838
966
properties[name] = value
839
967
continue
840
properties[name] = type(value)(value, variant_level=
841
value.variant_level+1)
968
properties[name] = type(value)(
969
value, variant_level = value.variant_level + 1)
842
970
return dbus.Dictionary(properties, signature="sv")
843
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
979
844
980
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
845
981
out_signature="s",
846
982
path_keyword='object_path',
847
983
connection_keyword='connection')
848
984
def Introspect(self, object_path, connection):
849
"""Standard D-Bus method, overloaded to insert property tags.
985
"""Overloading of standard D-Bus method.
986
987
Inserts property tags and interface annotation tags.
850
988
"""
851
989
xmlstring = dbus.service.Object.Introspect(self, object_path,
852
990
connection)
853
991
try:
854
992
document = xml.dom.minidom.parseString(xmlstring)
993
855
994
def make_tag(document, name, prop):
856
995
e = document.createElement("property")
857
996
e.setAttribute("name", name)
858
997
e.setAttribute("type", prop._dbus_signature)
859
998
e.setAttribute("access", prop._dbus_access)
860
999
return e
1000
861
1001
for if_tag in document.getElementsByTagName("interface"):
1002
# Add property tags
862
1003
for tag in (make_tag(document, name, prop)
863
1004
for name, prop
864
in self._get_all_dbus_properties()
1005
in self._get_all_dbus_things("property")
865
1006
if prop._dbus_interface
866
1007
== if_tag.getAttribute("name")):
867
1008
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)
868
1038
# Add the names to the return values for the
869
1039
# "org.freedesktop.DBus.Properties" methods
870
1040
if (if_tag.getAttribute("name")
885
1055
except (AttributeError, xml.dom.DOMException,
886
1056
xml.parsers.expat.ExpatError) as error:
887
1057
logger.error("Failed to override Introspection method",
888
error)
1058
exc_info=error)
889
1059
return xmlstring
890
1060
891
1061
892
def datetime_to_dbus (dt, variant_level=0):
1062
def datetime_to_dbus(dt, variant_level=0):
893
1063
"""Convert a UTC datetime.datetime() to a D-Bus type."""
894
1064
if dt is None:
895
1065
return dbus.String("", variant_level = variant_level)
896
return dbus.String(dt.isoformat(),
897
variant_level=variant_level)
898
899
900
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
901
.__metaclass__):
902
"""Applied to an empty subclass of a D-Bus object, this metaclass
903
will add additional D-Bus attributes matching a certain pattern.
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).
904
1091
"""
905
def __new__(mcs, name, bases, attr):
906
# Go through all the base classes which could have D-Bus
907
# methods, signals, or properties in them
908
for base in (b for b in bases
909
if issubclass(b, dbus.service.Object)):
910
# Go though all attributes of the base class
911
for attrname, attribute in inspect.getmembers(base):
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):
912
1100
# Ignore non-D-Bus attributes, and D-Bus attributes
913
1101
# with the wrong interface name
914
1102
if (not hasattr(attribute, "_dbus_interface")
915
or not attribute._dbus_interface
916
.startswith("se.recompile.Mandos")):
1103
or not attribute._dbus_interface.startswith(
1104
orig_interface_name)):
917
1105
continue
918
1106
# Create an alternate D-Bus interface name based on
919
1107
# the current name
920
alt_interface = (attribute._dbus_interface
921
.replace("se.recompile.Mandos",
922
"se.bsnet.fukt.Mandos"))
1108
alt_interface = attribute._dbus_interface.replace(
1109
orig_interface_name, alt_interface_name)
1110
interface_names.add(alt_interface)
923
1111
# Is this a D-Bus signal?
924
1112
if getattr(attribute, "_dbus_is_signal", False):
925
# Extract the original non-method function by
926
# black magic
927
nonmethod_func = (dict(
1113
if sys.version_info.major == 2:
1114
# Extract the original non-method undecorated
1115
# function by black magic
1116
nonmethod_func = (dict(
928
1117
zip(attribute.func_code.co_freevars,
929
attribute.__closure__))["func"]
930
.cell_contents)
1118
attribute.__closure__))
1119
["func"].cell_contents)
1120
else:
1121
nonmethod_func = attribute
931
1122
# Create a new, but exactly alike, function
932
1123
# object, and decorate it to be a new D-Bus signal
933
1124
# with the alternate D-Bus interface name
934
new_function = (dbus.service.signal
935
(alt_interface,
936
attribute._dbus_signature)
937
(types.FunctionType(
938
nonmethod_func.func_code,
939
nonmethod_func.func_globals,
940
nonmethod_func.func_name,
941
nonmethod_func.func_defaults,
942
nonmethod_func.func_closure)))
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
943
1148
# Define a creator of a function to call both the
944
# old and new functions, so both the old and new
945
# signals gets sent when the function is called
1149
# original and alternate functions, so both the
1150
# original and alternate signals gets sent when
1151
# the function is called
946
1152
def fixscope(func1, func2):
947
1153
"""This function is a scope container to pass
948
1154
func1 and func2 to the "call_both" function
949
1155
outside of its arguments"""
1156
950
1157
def call_both(*args, **kwargs):
951
1158
"""This function will emit two D-Bus
952
1159
signals by calling func1 and func2"""
953
1160
func1(*args, **kwargs)
954
1161
func2(*args, **kwargs)
1162
955
1163
return call_both
956
1164
# Create the "call_both" function and add it to
957
1165
# the class
958
attr[attrname] = fixscope(attribute,
959
new_function)
1166
attr[attrname] = fixscope(attribute, new_function)
960
1167
# Is this a D-Bus method?
961
1168
elif getattr(attribute, "_dbus_is_method", False):
962
1169
# Create a new, but exactly alike, function
963
1170
# object. Decorate it to be a new D-Bus method
964
1171
# with the alternate D-Bus interface name. Add it
965
1172
# to the class.
966
attr[attrname] = (dbus.service.method
967
(alt_interface,
968
attribute._dbus_in_signature,
969
attribute._dbus_out_signature)
970
(types.FunctionType
971
(attribute.func_code,
972
attribute.func_globals,
973
attribute.func_name,
974
attribute.func_defaults,
975
attribute.func_closure)))
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
976
1189
# Is this a D-Bus property?
977
1190
elif getattr(attribute, "_dbus_is_property", False):
978
1191
# Create a new, but exactly alike, function
979
1192
# object, and decorate it to be a new D-Bus
980
1193
# property with the alternate D-Bus interface
981
1194
# name. Add it to the class.
982
attr[attrname] = (dbus_service_property
983
(alt_interface,
984
attribute._dbus_signature,
985
attribute._dbus_access,
986
attribute
987
._dbus_get_args_options
988
["byte_arrays"])
989
(types.FunctionType
990
(attribute.func_code,
991
attribute.func_globals,
992
attribute.func_name,
993
attribute.func_defaults,
994
attribute.func_closure)))
995
return type.__new__(mcs, name, bases, attr)
996
997
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"})
998
1252
class ClientDBus(Client, DBusObjectWithProperties):
999
1253
"""A Client class using D-Bus
1000
1254
1004
1258
"""
1005
1259
1006
1260
runtime_expansions = (Client.runtime_expansions
1007
+ ("dbus_object_path",))
1261
+ ("dbus_object_path", ))
1262
1263
_interface = "se.recompile.Mandos.Client"
1008
1264
1009
1265
# dbus.service.Object doesn't use super(), so we can't either.
1010
1266
1011
1267
def __init__(self, bus = None, *args, **kwargs):
1012
1268
self.bus = bus
1013
1269
Client.__init__(self, *args, **kwargs)
1014
1015
self._approvals_pending = 0
1016
1270
# Only now, when this client is initialized, can it show up on
1017
1271
# the D-Bus
1018
client_object_name = unicode(self.name).translate(
1272
client_object_name = str(self.name).translate(
1019
1273
{ord("."): ord("_"),
1020
1274
ord("-"): ord("_")})
1021
self.dbus_object_path = (dbus.ObjectPath
1022
("/clients/" + client_object_name))
1275
self.dbus_object_path = dbus.ObjectPath(
1276
"/clients/" + client_object_name)
1023
1277
DBusObjectWithProperties.__init__(self, self.bus,
1024
1278
self.dbus_object_path)
1025
1026
def notifychangeproperty(transform_func,
1027
dbus_name, type_func=lambda x: x,
1028
variant_level=1):
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):
1029
1285
""" Modify a variable so that it's a property which announces
1030
1286
its changes to DBus.
1031
1287
1036
1292
to the D-Bus. Default: no transform
1037
1293
variant_level: D-Bus variant level. Default: 1
1038
1294
"""
1039
attrname = "_{0}".format(dbus_name)
1295
attrname = "_{}".format(dbus_name)
1296
1040
1297
def setter(self, value):
1041
1298
if hasattr(self, "dbus_object_path"):
1042
1299
if (not hasattr(self, attrname) or
1043
1300
type_func(getattr(self, attrname, None))
1044
1301
!= type_func(value)):
1045
dbus_value = transform_func(type_func(value),
1046
variant_level
1047
=variant_level)
1048
self.PropertyChanged(dbus.String(dbus_name),
1049
dbus_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())
1050
1317
setattr(self, attrname, value)
1051
1318
1052
1319
return property(lambda self: getattr(self, attrname), setter)
1053
1320
1054
1055
1321
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1056
1322
approvals_pending = notifychangeproperty(dbus.Boolean,
1057
1323
"ApprovalPending",
1059
1325
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1060
1326
last_enabled = notifychangeproperty(datetime_to_dbus,
1061
1327
"LastEnabled")
1062
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1063
type_func = lambda checker:
1064
checker is not None)
1328
checker = notifychangeproperty(
1329
dbus.Boolean, "CheckerRunning",
1330
type_func = lambda checker: checker is not None)
1065
1331
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1066
1332
"LastCheckedOK")
1333
last_checker_status = notifychangeproperty(dbus.Int16,
1334
"LastCheckerStatus")
1067
1335
last_approval_request = notifychangeproperty(
1068
1336
datetime_to_dbus, "LastApprovalRequest")
1069
1337
approved_by_default = notifychangeproperty(dbus.Boolean,
1070
1338
"ApprovedByDefault")
1071
approval_delay = notifychangeproperty(dbus.UInt16,
1072
"ApprovalDelay",
1073
type_func =
1074
_timedelta_to_milliseconds)
1339
approval_delay = notifychangeproperty(
1340
dbus.UInt64, "ApprovalDelay",
1341
type_func = lambda td: td.total_seconds() * 1000)
1075
1342
approval_duration = notifychangeproperty(
1076
dbus.UInt16, "ApprovalDuration",
1077
type_func = _timedelta_to_milliseconds)
1343
dbus.UInt64, "ApprovalDuration",
1344
type_func = lambda td: td.total_seconds() * 1000)
1078
1345
host = notifychangeproperty(dbus.String, "Host")
1079
timeout = notifychangeproperty(dbus.UInt16, "Timeout",
1080
type_func =
1081
_timedelta_to_milliseconds)
1346
timeout = notifychangeproperty(
1347
dbus.UInt64, "Timeout",
1348
type_func = lambda td: td.total_seconds() * 1000)
1082
1349
extended_timeout = notifychangeproperty(
1083
dbus.UInt16, "ExtendedTimeout",
1084
type_func = _timedelta_to_milliseconds)
1085
interval = notifychangeproperty(dbus.UInt16,
1086
"Interval",
1087
type_func =
1088
_timedelta_to_milliseconds)
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)
1089
1355
checker_command = notifychangeproperty(dbus.String, "Checker")
1356
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1357
invalidate_only=True)
1090
1358
1091
1359
del notifychangeproperty
1092
1360
1099
1367
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1100
1368
Client.__del__(self, *args, **kwargs)
1101
1369
1102
def checker_callback(self, pid, condition, command,
1103
*args, **kwargs):
1104
self.checker_callback_tag = None
1105
self.checker = None
1106
if os.WIFEXITED(condition):
1107
exitstatus = os.WEXITSTATUS(condition)
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:
1108
1377
# Emit D-Bus signal
1109
1378
self.CheckerCompleted(dbus.Int16(exitstatus),
1110
dbus.Int64(condition),
1379
dbus.Int64(0),
1111
1380
dbus.String(command))
1112
1381
else:
1113
1382
# Emit D-Bus signal
1114
1383
self.CheckerCompleted(dbus.Int16(-1),
1115
dbus.Int64(condition),
1384
dbus.Int64(
1385
self.last_checker_signal),
1116
1386
dbus.String(command))
1117
1118
return Client.checker_callback(self, pid, condition, command,
1119
*args, **kwargs)
1387
return ret
1120
1388
1121
1389
def start_checker(self, *args, **kwargs):
1122
old_checker = self.checker
1123
if self.checker is not None:
1124
old_checker_pid = self.checker.pid
1125
else:
1126
old_checker_pid = None
1390
old_checker_pid = getattr(self.checker, "pid", None)
1127
1391
r = Client.start_checker(self, *args, **kwargs)
1128
1392
# Only if new checker process was started
1129
1393
if (self.checker is not None
1133
1397
return r
1134
1398
1135
1399
def _reset_approved(self):
1136
self._approved = None
1400
self.approved = None
1137
1401
return False
1138
1402
1139
1403
def approve(self, value=True):
1404
self.approved = value
1405
gobject.timeout_add(int(self.approval_duration.total_seconds()
1406
* 1000), self._reset_approved)
1140
1407
self.send_changedstate()
1141
self._approved = value
1142
gobject.timeout_add(_timedelta_to_milliseconds
1143
(self.approval_duration),
1144
self._reset_approved)
1145
1146
1408
1147
1409
## D-Bus methods, signals & properties
1148
_interface = "se.recompile.Mandos.Client"
1410
1411
## Interfaces
1149
1412
1150
1413
## Signals
1151
1414
1162
1425
pass
1163
1426
1164
1427
# PropertyChanged - signal
1428
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1165
1429
@dbus.service.signal(_interface, signature="sv")
1166
1430
def PropertyChanged(self, property, value):
1167
1431
"D-Bus signal"
1188
1452
"D-Bus signal"
1189
1453
return self.need_approval()
1190
1454
1191
# NeRwequest - signal
1192
@dbus.service.signal(_interface, signature="s")
1193
def NewRequest(self, ip):
1194
"""D-Bus signal
1195
Is sent after a client request a password.
1196
"""
1197
pass
1198
1199
1455
## Methods
1200
1456
1201
1457
# Approve - method
1239
1495
return dbus.Boolean(bool(self.approvals_pending))
1240
1496
1241
1497
# ApprovedByDefault - property
1242
@dbus_service_property(_interface, signature="b",
1498
@dbus_service_property(_interface,
1499
signature="b",
1243
1500
access="readwrite")
1244
1501
def ApprovedByDefault_dbus_property(self, value=None):
1245
1502
if value is None: # get
1247
1504
self.approved_by_default = bool(value)
1248
1505
1249
1506
# ApprovalDelay - property
1250
@dbus_service_property(_interface, signature="t",
1507
@dbus_service_property(_interface,
1508
signature="t",
1251
1509
access="readwrite")
1252
1510
def ApprovalDelay_dbus_property(self, value=None):
1253
1511
if value is None: # get
1254
return dbus.UInt64(self.approval_delay_milliseconds())
1512
return dbus.UInt64(self.approval_delay.total_seconds()
1513
* 1000)
1255
1514
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1256
1515
1257
1516
# ApprovalDuration - property
1258
@dbus_service_property(_interface, signature="t",
1517
@dbus_service_property(_interface,
1518
signature="t",
1259
1519
access="readwrite")
1260
1520
def ApprovalDuration_dbus_property(self, value=None):
1261
1521
if value is None: # get
1262
return dbus.UInt64(_timedelta_to_milliseconds(
1263
self.approval_duration))
1522
return dbus.UInt64(self.approval_duration.total_seconds()
1523
* 1000)
1264
1524
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1265
1525
1266
1526
# Name - property
1274
1534
return dbus.String(self.fingerprint)
1275
1535
1276
1536
# Host - property
1277
@dbus_service_property(_interface, signature="s",
1537
@dbus_service_property(_interface,
1538
signature="s",
1278
1539
access="readwrite")
1279
1540
def Host_dbus_property(self, value=None):
1280
1541
if value is None: # get
1281
1542
return dbus.String(self.host)
1282
self.host = value
1543
self.host = str(value)
1283
1544
1284
1545
# Created - property
1285
1546
@dbus_service_property(_interface, signature="s", access="read")
1292
1553
return datetime_to_dbus(self.last_enabled)
1293
1554
1294
1555
# Enabled - property
1295
@dbus_service_property(_interface, signature="b",
1556
@dbus_service_property(_interface,
1557
signature="b",
1296
1558
access="readwrite")
1297
1559
def Enabled_dbus_property(self, value=None):
1298
1560
if value is None: # get
1303
1565
self.disable()
1304
1566
1305
1567
# LastCheckedOK - property
1306
@dbus_service_property(_interface, signature="s",
1568
@dbus_service_property(_interface,
1569
signature="s",
1307
1570
access="readwrite")
1308
1571
def LastCheckedOK_dbus_property(self, value=None):
1309
1572
if value is not None:
1311
1574
return
1312
1575
return datetime_to_dbus(self.last_checked_ok)
1313
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)
1581
1314
1582
# Expires - property
1315
1583
@dbus_service_property(_interface, signature="s", access="read")
1316
1584
def Expires_dbus_property(self):
1322
1590
return datetime_to_dbus(self.last_approval_request)
1323
1591
1324
1592
# Timeout - property
1325
@dbus_service_property(_interface, signature="t",
1593
@dbus_service_property(_interface,
1594
signature="t",
1326
1595
access="readwrite")
1327
1596
def Timeout_dbus_property(self, value=None):
1328
1597
if value is None: # get
1329
return dbus.UInt64(self.timeout_milliseconds())
1598
return dbus.UInt64(self.timeout.total_seconds() * 1000)
1599
old_timeout = self.timeout
1330
1600
self.timeout = datetime.timedelta(0, 0, 0, value)
1331
if getattr(self, "disable_initiator_tag", None) is None:
1332
return
1333
# Reschedule timeout
1334
gobject.source_remove(self.disable_initiator_tag)
1335
self.disable_initiator_tag = None
1336
self.expires = None
1337
time_to_die = _timedelta_to_milliseconds((self
1338
.last_checked_ok
1339
+ self.timeout)
1340
- datetime.datetime
1341
.utcnow())
1342
if time_to_die <= 0:
1343
# The timeout has passed
1344
self.disable()
1345
else:
1346
self.expires = (datetime.datetime.utcnow()
1347
+ datetime.timedelta(milliseconds =
1348
time_to_die))
1349
self.disable_initiator_tag = (gobject.timeout_add
1350
(time_to_die, self.disable))
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)
1351
1616
1352
1617
# ExtendedTimeout - property
1353
@dbus_service_property(_interface, signature="t",
1618
@dbus_service_property(_interface,
1619
signature="t",
1354
1620
access="readwrite")
1355
1621
def ExtendedTimeout_dbus_property(self, value=None):
1356
1622
if value is None: # get
1357
return dbus.UInt64(self.extended_timeout_milliseconds())
1623
return dbus.UInt64(self.extended_timeout.total_seconds()
1624
* 1000)
1358
1625
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1359
1626
1360
1627
# Interval - property
1361
@dbus_service_property(_interface, signature="t",
1628
@dbus_service_property(_interface,
1629
signature="t",
1362
1630
access="readwrite")
1363
1631
def Interval_dbus_property(self, value=None):
1364
1632
if value is None: # get
1365
return dbus.UInt64(self.interval_milliseconds())
1633
return dbus.UInt64(self.interval.total_seconds() * 1000)
1366
1634
self.interval = datetime.timedelta(0, 0, 0, value)
1367
1635
if getattr(self, "checker_initiator_tag", None) is None:
1368
1636
return
1369
1637
if self.enabled:
1370
1638
# Reschedule checker run
1371
1639
gobject.source_remove(self.checker_initiator_tag)
1372
self.checker_initiator_tag = (gobject.timeout_add
1373
(value, self.start_checker))
1374
self.start_checker() # Start one now, too
1640
self.checker_initiator_tag = gobject.timeout_add(
1641
value, self.start_checker)
1642
self.start_checker() # Start one now, too
1375
1643
1376
1644
# Checker - property
1377
@dbus_service_property(_interface, signature="s",
1645
@dbus_service_property(_interface,
1646
signature="s",
1378
1647
access="readwrite")
1379
1648
def Checker_dbus_property(self, value=None):
1380
1649
if value is None: # get
1381
1650
return dbus.String(self.checker_command)
1382
self.checker_command = value
1651
self.checker_command = str(value)
1383
1652
1384
1653
# CheckerRunning - property
1385
@dbus_service_property(_interface, signature="b",
1654
@dbus_service_property(_interface,
1655
signature="b",
1386
1656
access="readwrite")
1387
1657
def CheckerRunning_dbus_property(self, value=None):
1388
1658
if value is None: # get
1398
1668
return self.dbus_object_path # is already a dbus.ObjectPath
1399
1669
1400
1670
# Secret = property
1401
@dbus_service_property(_interface, signature="ay",
1402
access="write", byte_arrays=True)
1671
@dbus_service_property(_interface,
1672
signature="ay",
1673
access="write",
1674
byte_arrays=True)
1403
1675
def Secret_dbus_property(self, value):
1404
self.secret = str(value)
1676
self.secret = bytes(value)
1405
1677
1406
1678
del _interface
1407
1679
1411
1683
self._pipe = child_pipe
1412
1684
self._pipe.send(('init', fpr, address))
1413
1685
if not self._pipe.recv():
1414
raise KeyError()
1686
raise KeyError(fpr)
1415
1687
1416
1688
def __getattribute__(self, name):
1417
if(name == '_pipe'):
1689
if name == '_pipe':
1418
1690
return super(ProxyClient, self).__getattribute__(name)
1419
1691
self._pipe.send(('getattr', name))
1420
1692
data = self._pipe.recv()
1421
1693
if data[0] == 'data':
1422
1694
return data[1]
1423
1695
if data[0] == 'function':
1696
1424
1697
def func(*args, **kwargs):
1425
1698
self._pipe.send(('funcall', name, args, kwargs))
1426
1699
return self._pipe.recv()[1]
1700
1427
1701
return func
1428
1702
1429
1703
def __setattr__(self, name, value):
1430
if(name == '_pipe'):
1704
if name == '_pipe':
1431
1705
return super(ProxyClient, self).__setattr__(name, value)
1432
1706
self._pipe.send(('setattr', name, value))
1433
1707
1434
1708
1435
class ClientDBusTransitional(ClientDBus):
1436
__metaclass__ = AlternateDBusNamesMetaclass
1437
1438
1439
1709
class ClientHandler(socketserver.BaseRequestHandler, object):
1440
1710
"""A class to handle client connections.
1441
1711
1445
1715
def handle(self):
1446
1716
with contextlib.closing(self.server.child_pipe) as child_pipe:
1447
1717
logger.info("TCP connection from: %s",
1448
unicode(self.client_address))
1718
str(self.client_address))
1449
1719
logger.debug("Pipe FD: %d",
1450
1720
self.server.child_pipe.fileno())
1451
1721
1452
session = (gnutls.connection
1453
.ClientSession(self.request,
1454
gnutls.connection
1455
.X509Credentials()))
1722
session = gnutls.connection.ClientSession(
1723
self.request, gnutls.connection .X509Credentials())
1456
1724
1457
1725
# Note: gnutls.connection.X509Credentials is really a
1458
1726
# generic GnuTLS certificate credentials object so long as
1467
1735
priority = self.server.gnutls_priority
1468
1736
if priority is None:
1469
1737
priority = "NORMAL"
1470
(gnutls.library.functions
1471
.gnutls_priority_set_direct(session._c_object,
1472
priority, None))
1738
gnutls.library.functions.gnutls_priority_set_direct(
1739
session._c_object, priority, None)
1473
1740
1474
1741
# Start communication using the Mandos protocol
1475
1742
# Get protocol number
1477
1744
logger.debug("Protocol version: %r", line)
1478
1745
try:
1479
1746
if int(line.strip().split()[0]) > 1:
1480
raise RuntimeError
1747
raise RuntimeError(line)
1481
1748
except (ValueError, IndexError, RuntimeError) as error:
1482
1749
logger.error("Unknown protocol version: %s", error)
1483
1750
return
1495
1762
approval_required = False
1496
1763
try:
1497
1764
try:
1498
fpr = self.fingerprint(self.peer_certificate
1499
(session))
1765
fpr = self.fingerprint(
1766
self.peer_certificate(session))
1500
1767
except (TypeError,
1501
1768
gnutls.errors.GNUTLSError) as error:
1502
1769
logger.warning("Bad certificate: %s", error)
1503
1770
return
1504
1771
logger.debug("Fingerprint: %s", fpr)
1505
if self.server.use_dbus:
1506
# Emit D-Bus signal
1507
client.NewRequest(str(self.client_address))
1508
1772
1509
1773
try:
1510
1774
client = ProxyClient(child_pipe, fpr,
1520
1784
while True:
1521
1785
if not client.enabled:
1522
1786
logger.info("Client %s is disabled",
1523
client.name)
1787
client.name)
1524
1788
if self.server.use_dbus:
1525
1789
# Emit D-Bus signal
1526
1790
client.Rejected("Disabled")
1527
1791
return
1528
1792
1529
if client._approved or not client.approval_delay:
1793
if client.approved or not client.approval_delay:
1530
1794
#We are approved or approval is disabled
1531
1795
break
1532
elif client._approved is None:
1796
elif client.approved is None:
1533
1797
logger.info("Client %s needs approval",
1534
1798
client.name)
1535
1799
if self.server.use_dbus:
1536
1800
# Emit D-Bus signal
1537
1801
client.NeedApproval(
1538
client.approval_delay_milliseconds(),
1539
client.approved_by_default)
1802
client.approval_delay.total_seconds()
1803
* 1000, client.approved_by_default)
1540
1804
else:
1541
1805
logger.warning("Client %s was not approved",
1542
1806
client.name)
1548
1812
#wait until timeout or approved
1549
1813
time = datetime.datetime.now()
1550
1814
client.changedstate.acquire()
1551
(client.changedstate.wait
1552
(float(client._timedelta_to_milliseconds(delay)
1553
/ 1000)))
1815
client.changedstate.wait(delay.total_seconds())
1554
1816
client.changedstate.release()
1555
1817
time2 = datetime.datetime.now()
1556
1818
if (time2 - time) >= delay:
1572
1834
try:
1573
1835
sent = session.send(client.secret[sent_size:])
1574
1836
except gnutls.errors.GNUTLSError as error:
1575
logger.warning("gnutls send failed")
1837
logger.warning("gnutls send failed",
1838
exc_info=error)
1576
1839
return
1577
logger.debug("Sent: %d, remaining: %d",
1578
sent, len(client.secret)
1579
- (sent_size + sent))
1840
logger.debug("Sent: %d, remaining: %d", sent,
1841
len(client.secret) - (sent_size
1842
+ sent))
1580
1843
sent_size += sent
1581
1844
1582
1845
logger.info("Sending secret to %s", client.name)
1583
1846
# bump the timeout using extended_timeout
1584
client.checked_ok(client.extended_timeout)
1847
client.bump_timeout(client.extended_timeout)
1585
1848
if self.server.use_dbus:
1586
1849
# Emit D-Bus signal
1587
1850
client.GotSecret()
1592
1855
try:
1593
1856
session.bye()
1594
1857
except gnutls.errors.GNUTLSError as error:
1595
logger.warning("GnuTLS bye failed")
1858
logger.warning("GnuTLS bye failed",
1859
exc_info=error)
1596
1860
1597
1861
@staticmethod
1598
1862
def peer_certificate(session):
1599
1863
"Return the peer's OpenPGP certificate as a bytestring"
1600
1864
# If not an OpenPGP certificate...
1601
if (gnutls.library.functions
1602
.gnutls_certificate_type_get(session._c_object)
1865
if (gnutls.library.functions.gnutls_certificate_type_get(
1866
session._c_object)
1603
1867
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1604
1868
# ...do the normal thing
1605
1869
return session.peer_certificate
1619
1883
def fingerprint(openpgp):
1620
1884
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1621
1885
# New GnuTLS "datum" with the OpenPGP public key
1622
datum = (gnutls.library.types
1623
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1624
ctypes.POINTER
1625
(ctypes.c_ubyte)),
1626
ctypes.c_uint(len(openpgp))))
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)))
1627
1890
# New empty GnuTLS certificate
1628
1891
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1629
(gnutls.library.functions
1630
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
1892
gnutls.library.functions.gnutls_openpgp_crt_init(
1893
ctypes.byref(crt))
1631
1894
# Import the OpenPGP public key into the certificate
1632
(gnutls.library.functions
1633
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1634
gnutls.library.constants
1635
.GNUTLS_OPENPGP_FMT_RAW))
1895
gnutls.library.functions.gnutls_openpgp_crt_import(
1896
crt, ctypes.byref(datum),
1897
gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)
1636
1898
# Verify the self signature in the key
1637
1899
crtverify = ctypes.c_uint()
1638
(gnutls.library.functions
1639
.gnutls_openpgp_crt_verify_self(crt, 0,
1640
ctypes.byref(crtverify)))
1900
gnutls.library.functions.gnutls_openpgp_crt_verify_self(
1901
crt, 0, ctypes.byref(crtverify))
1641
1902
if crtverify.value != 0:
1642
1903
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1643
raise (gnutls.errors.CertificateSecurityError
1644
("Verify failed"))
1904
raise gnutls.errors.CertificateSecurityError(
1905
"Verify failed")
1645
1906
# New buffer for the fingerprint
1646
1907
buf = ctypes.create_string_buffer(20)
1647
1908
buf_len = ctypes.c_size_t()
1648
1909
# Get the fingerprint from the certificate into the buffer
1649
(gnutls.library.functions
1650
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1651
ctypes.byref(buf_len)))
1910
gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint(
1911
crt, ctypes.byref(buf), ctypes.byref(buf_len))
1652
1912
# Deinit the certificate
1653
1913
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1654
1914
# Convert the buffer to a Python bytestring
1660
1920
1661
1921
class MultiprocessingMixIn(object):
1662
1922
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
1923
1663
1924
def sub_process_main(self, request, address):
1664
1925
try:
1665
1926
self.finish_request(request, address)
1666
except:
1927
except Exception:
1667
1928
self.handle_error(request, address)
1668
1929
self.close_request(request)
1669
1930
1670
1931
def process_request(self, request, address):
1671
1932
"""Start a new process to process the request."""
1672
1933
proc = multiprocessing.Process(target = self.sub_process_main,
1673
args = (request,
1674
address))
1934
args = (request, address))
1675
1935
proc.start()
1676
1936
return proc
1677
1937
1678
1938
1679
1939
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1680
1940
""" adds a pipe to the MixIn """
1941
1681
1942
def process_request(self, request, client_address):
1682
1943
"""Overrides and wraps the original process_request().
1683
1944
1692
1953
1693
1954
def add_pipe(self, parent_pipe, proc):
1694
1955
"""Dummy function; override as necessary"""
1695
raise NotImplementedError
1956
raise NotImplementedError()
1696
1957
1697
1958
1698
1959
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1704
1965
interface: None or a network interface name (string)
1705
1966
use_ipv6: Boolean; to use IPv6 or not
1706
1967
"""
1968
1707
1969
def __init__(self, server_address, RequestHandlerClass,
1708
interface=None, use_ipv6=True):
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
"""
1709
1976
self.interface = interface
1710
1977
if use_ipv6:
1711
1978
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.
1712
2005
socketserver.TCPServer.__init__(self, server_address,
1713
2006
RequestHandlerClass)
2007
1714
2008
def server_bind(self):
1715
2009
"""This overrides the normal server_bind() function
1716
2010
to bind to an interface if one was specified, and also NOT to
1722
2016
self.interface)
1723
2017
else:
1724
2018
try:
1725
self.socket.setsockopt(socket.SOL_SOCKET,
1726
SO_BINDTODEVICE,
1727
str(self.interface
1728
+ '\0'))
2019
self.socket.setsockopt(
2020
socket.SOL_SOCKET, SO_BINDTODEVICE,
2021
(self.interface + "\0").encode("utf-8"))
1729
2022
except socket.error as error:
1730
if error[0] == errno.EPERM:
1731
logger.error("No permission to"
1732
" bind to interface %s",
1733
self.interface)
1734
elif error[0] == errno.ENOPROTOOPT:
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:
1735
2027
logger.error("SO_BINDTODEVICE not available;"
1736
2028
" cannot bind to interface %s",
1737
2029
self.interface)
2030
elif error.errno == errno.ENODEV:
2031
logger.error("Interface %s does not exist,"
2032
" cannot bind", self.interface)
1738
2033
else:
1739
2034
raise
1740
2035
# Only bind(2) the socket if we really need to.
1743
2038
if self.address_family == socket.AF_INET6:
1744
2039
any_address = "::" # in6addr_any
1745
2040
else:
1746
any_address = socket.INADDR_ANY
2041
any_address = "0.0.0.0" # INADDR_ANY
1747
2042
self.server_address = (any_address,
1748
2043
self.server_address[1])
1749
2044
elif not self.server_address[1]:
1750
self.server_address = (self.server_address[0],
1751
0)
2045
self.server_address = (self.server_address[0], 0)
1752
2046
# if self.interface:
1753
2047
# self.server_address = (self.server_address[0],
1754
2048
# 0, # port
1768
2062
1769
2063
Assumes a gobject.MainLoop event loop.
1770
2064
"""
2065
1771
2066
def __init__(self, server_address, RequestHandlerClass,
1772
interface=None, use_ipv6=True, clients=None,
1773
gnutls_priority=None, use_dbus=True):
2067
interface=None,
2068
use_ipv6=True,
2069
clients=None,
2070
gnutls_priority=None,
2071
use_dbus=True,
2072
socketfd=None):
1774
2073
self.enabled = False
1775
2074
self.clients = clients
1776
2075
if self.clients is None:
1780
2079
IPv6_TCPServer.__init__(self, server_address,
1781
2080
RequestHandlerClass,
1782
2081
interface = interface,
1783
use_ipv6 = use_ipv6)
2082
use_ipv6 = use_ipv6,
2083
socketfd = socketfd)
2084
1784
2085
def server_activate(self):
1785
2086
if self.enabled:
1786
2087
return socketserver.TCPServer.server_activate(self)
1790
2091
1791
2092
def add_pipe(self, parent_pipe, proc):
1792
2093
# Call "handle_ipc" for both data and EOF events
1793
gobject.io_add_watch(parent_pipe.fileno(),
1794
gobject.IO_IN | gobject.IO_HUP,
1795
functools.partial(self.handle_ipc,
1796
parent_pipe =
1797
parent_pipe,
1798
proc = proc))
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))
1799
2100
1800
def handle_ipc(self, source, condition, parent_pipe=None,
1801
proc = None, client_object=None):
1802
condition_names = {
1803
gobject.IO_IN: "IN", # There is data to read.
1804
gobject.IO_OUT: "OUT", # Data can be written (without
1805
# blocking).
1806
gobject.IO_PRI: "PRI", # There is urgent data to read.
1807
gobject.IO_ERR: "ERR", # Error condition.
1808
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1809
# broken, usually for pipes and
1810
# sockets).
1811
}
1812
conditions_string = ' | '.join(name
1813
for cond, name in
1814
condition_names.iteritems()
1815
if cond & condition)
2101
def handle_ipc(self, source, condition,
2102
parent_pipe=None,
2103
proc = None,
2104
client_object=None):
1816
2105
# error, or the other end of multiprocessing.Pipe has closed
1817
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2106
if condition & (gobject.IO_ERR | gobject.IO_HUP):
1818
2107
# Wait for other process to exit
1819
2108
proc.join()
1820
2109
return False
1841
2130
parent_pipe.send(False)
1842
2131
return False
1843
2132
1844
gobject.io_add_watch(parent_pipe.fileno(),
1845
gobject.IO_IN | gobject.IO_HUP,
1846
functools.partial(self.handle_ipc,
1847
parent_pipe =
1848
parent_pipe,
1849
proc = proc,
1850
client_object =
1851
client))
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))
1852
2140
parent_pipe.send(True)
1853
2141
# remove the old hook in favor of the new above hook on
1854
2142
# same fileno
1860
2148
1861
2149
parent_pipe.send(('data', getattr(client_object,
1862
2150
funcname)(*args,
1863
**kwargs)))
2151
**kwargs)))
1864
2152
1865
2153
if command == 'getattr':
1866
2154
attrname = request[1]
1867
if callable(client_object.__getattribute__(attrname)):
1868
parent_pipe.send(('function',))
2155
if isinstance(client_object.__getattribute__(attrname),
2156
collections.Callable):
2157
parent_pipe.send(('function', ))
1869
2158
else:
1870
parent_pipe.send(('data', client_object
1871
.__getattribute__(attrname)))
2159
parent_pipe.send((
2160
'data', client_object.__getattribute__(attrname)))
1872
2161
1873
2162
if command == 'setattr':
1874
2163
attrname = request[1]
1878
2167
return True
1879
2168
1880
2169
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
1881
2266
def string_to_delta(interval):
1882
2267
"""Parse a string and return a datetime.timedelta
1883
2268
1894
2279
>>> string_to_delta('5m 30s')
1895
2280
datetime.timedelta(0, 330)
1896
2281
"""
2282
2283
try:
2284
return rfc3339_duration_to_delta(interval)
2285
except ValueError:
2286
pass
2287
1897
2288
timevalue = datetime.timedelta(0)
1898
2289
for s in interval.split():
1899
2290
try:
1900
suffix = unicode(s[-1])
2291
suffix = s[-1]
1901
2292
value = int(s[:-1])
1902
2293
if suffix == "d":
1903
2294
delta = datetime.timedelta(value)
1910
2301
elif suffix == "w":
1911
2302
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1912
2303
else:
1913
raise ValueError("Unknown suffix %r" % suffix)
1914
except (ValueError, IndexError) as e:
2304
raise ValueError("Unknown suffix {!r}".format(suffix))
2305
except IndexError as e:
1915
2306
raise ValueError(*(e.args))
1916
2307
timevalue += delta
1917
2308
return timevalue
1930
2321
sys.exit()
1931
2322
if not noclose:
1932
2323
# Close all standard open file descriptors
1933
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2324
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1934
2325
if not stat.S_ISCHR(os.fstat(null).st_mode):
1935
2326
raise OSError(errno.ENODEV,
1936
"%s not a character device"
1937
% os.path.devnull)
2327
"{} not a character device"
2328
.format(os.devnull))
1938
2329
os.dup2(null, sys.stdin.fileno())
1939
2330
os.dup2(null, sys.stdout.fileno())
1940
2331
os.dup2(null, sys.stderr.fileno())
1949
2340
1950
2341
parser = argparse.ArgumentParser()
1951
2342
parser.add_argument("-v", "--version", action="version",
1952
version = "%%(prog)s %s" % version,
2343
version = "%(prog)s {}".format(version),
1953
2344
help="show version number and exit")
1954
2345
parser.add_argument("-i", "--interface", metavar="IF",
1955
2346
help="Bind to interface IF")
1961
2352
help="Run self-test")
1962
2353
parser.add_argument("--debug", action="store_true",
1963
2354
help="Debug mode; run in foreground and log"
1964
" to terminal")
2355
" to terminal", default=None)
1965
2356
parser.add_argument("--debuglevel", metavar="LEVEL",
1966
2357
help="Debug level for stdout output")
1967
2358
parser.add_argument("--priority", help="GnuTLS"
1974
2365
" files")
1975
2366
parser.add_argument("--no-dbus", action="store_false",
1976
2367
dest="use_dbus", help="Do not provide D-Bus"
1977
" system bus interface")
2368
" system bus interface", default=None)
1978
2369
parser.add_argument("--no-ipv6", action="store_false",
1979
dest="use_ipv6", help="Do not use IPv6")
2370
dest="use_ipv6", help="Do not use IPv6",
2371
default=None)
1980
2372
parser.add_argument("--no-restore", action="store_false",
1981
2373
dest="restore", help="Do not restore stored"
1982
" state")
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")
1983
2378
parser.add_argument("--statedir", metavar="DIR",
1984
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)
1985
2385
1986
2386
options = parser.parse_args()
1987
2387
1988
2388
if options.check:
1989
2389
import doctest
1990
doctest.testmod()
1991
sys.exit()
2390
fail_count, test_count = doctest.testmod()
2391
sys.exit(os.EX_OK if fail_count == 0 else 1)
1992
2392
1993
2393
# Default values for config file for server-global settings
1994
2394
server_defaults = { "interface": "",
1996
2396
"port": "",
1997
2397
"debug": "False",
1998
2398
"priority":
1999
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2399
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2400
":+SIGN-DSA-SHA256",
2000
2401
"servicename": "Mandos",
2001
2402
"use_dbus": "True",
2002
2403
"use_ipv6": "True",
2003
2404
"debuglevel": "",
2004
2405
"restore": "True",
2005
"statedir": "/var/lib/mandos"
2006
}
2406
"socket": "",
2407
"statedir": "/var/lib/mandos",
2408
"foreground": "False",
2409
"zeroconf": "True",
2410
}
2007
2411
2008
2412
# Parse config file for server-global settings
2009
2413
server_config = configparser.SafeConfigParser(server_defaults)
2010
2414
del server_defaults
2011
server_config.read(os.path.join(options.configdir,
2012
"mandos.conf"))
2415
server_config.read(os.path.join(options.configdir, "mandos.conf"))
2013
2416
# Convert the SafeConfigParser object to a dict
2014
2417
server_settings = server_config.defaults()
2015
2418
# Use the appropriate methods on the non-string config options
2016
for option in ("debug", "use_dbus", "use_ipv6"):
2419
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
2017
2420
server_settings[option] = server_config.getboolean("DEFAULT",
2018
2421
option)
2019
2422
if server_settings["port"]:
2020
2423
server_settings["port"] = server_config.getint("DEFAULT",
2021
2424
"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"])
2022
2434
del server_config
2023
2435
2024
2436
# Override the settings from the config file with command line
2025
2437
# options, if set.
2026
2438
for option in ("interface", "address", "port", "debug",
2027
"priority", "servicename", "configdir",
2028
"use_dbus", "use_ipv6", "debuglevel", "restore",
2029
"statedir"):
2439
"priority", "servicename", "configdir", "use_dbus",
2440
"use_ipv6", "debuglevel", "restore", "statedir",
2441
"socket", "foreground", "zeroconf"):
2030
2442
value = getattr(options, option)
2031
2443
if value is not None:
2032
2444
server_settings[option] = value
2033
2445
del options
2034
2446
# Force all strings to be unicode
2035
2447
for option in server_settings.keys():
2036
if type(server_settings[option]) is str:
2037
server_settings[option] = unicode(server_settings[option])
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
2038
2458
# Now we have our good server settings in "server_settings"
2039
2459
2040
2460
##################################################################
2041
2461
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
2042
2467
# For convenience
2043
2468
debug = server_settings["debug"]
2044
2469
debuglevel = server_settings["debuglevel"]
2046
2471
use_ipv6 = server_settings["use_ipv6"]
2047
2472
stored_state_path = os.path.join(server_settings["statedir"],
2048
2473
stored_state_file)
2474
foreground = server_settings["foreground"]
2475
zeroconf = server_settings["zeroconf"]
2049
2476
2050
2477
if debug:
2051
initlogger(logging.DEBUG)
2478
initlogger(debug, logging.DEBUG)
2052
2479
else:
2053
2480
if not debuglevel:
2054
initlogger()
2481
initlogger(debug)
2055
2482
else:
2056
2483
level = getattr(logging, debuglevel.upper())
2057
initlogger(level)
2484
initlogger(debug, level)
2058
2485
2059
2486
if server_settings["servicename"] != "Mandos":
2060
syslogger.setFormatter(logging.Formatter
2061
('Mandos (%s) [%%(process)d]:'
2062
' %%(levelname)s: %%(message)s'
2063
% server_settings["servicename"]))
2487
syslogger.setFormatter(
2488
logging.Formatter('Mandos ({}) [%(process)d]:'
2489
' %(levelname)s: %(message)s'.format(
2490
server_settings["servicename"])))
2064
2491
2065
2492
# Parse config file with clients
2066
client_defaults = { "timeout": "5m",
2067
"extended_timeout": "15m",
2068
"interval": "2m",
2069
"checker": "fping -q -- %%(host)s",
2070
"host": "",
2071
"approval_delay": "0s",
2072
"approval_duration": "1s",
2073
}
2074
client_config = configparser.SafeConfigParser(client_defaults)
2493
client_config = configparser.SafeConfigParser(Client
2494
.client_defaults)
2075
2495
client_config.read(os.path.join(server_settings["configdir"],
2076
2496
"clients.conf"))
2077
2497
2078
2498
global mandos_dbus_service
2079
2499
mandos_dbus_service = None
2080
2500
2081
tcp_server = MandosServer((server_settings["address"],
2082
server_settings["port"]),
2083
ClientHandler,
2084
interface=(server_settings["interface"]
2085
or None),
2086
use_ipv6=use_ipv6,
2087
gnutls_priority=
2088
server_settings["priority"],
2089
use_dbus=use_dbus)
2090
if not debug:
2091
pidfilename = "/var/run/mandos.pid"
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
2092
2517
try:
2093
pidfile = open(pidfilename, "w")
2094
except IOError:
2095
logger.error("Could not open file %r", pidfilename)
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)
2096
2522
2097
try:
2098
uid = pwd.getpwnam("_mandos").pw_uid
2099
gid = pwd.getpwnam("_mandos").pw_gid
2100
except KeyError:
2523
for name in ("_mandos", "mandos", "nobody"):
2101
2524
try:
2102
uid = pwd.getpwnam("mandos").pw_uid
2103
gid = pwd.getpwnam("mandos").pw_gid
2525
uid = pwd.getpwnam(name).pw_uid
2526
gid = pwd.getpwnam(name).pw_gid
2527
break
2104
2528
except KeyError:
2105
try:
2106
uid = pwd.getpwnam("nobody").pw_uid
2107
gid = pwd.getpwnam("nobody").pw_gid
2108
except KeyError:
2109
uid = 65534
2110
gid = 65534
2529
continue
2530
else:
2531
uid = 65534
2532
gid = 65534
2111
2533
try:
2112
2534
os.setgid(gid)
2113
2535
os.setuid(uid)
2114
2536
except OSError as error:
2115
if error[0] != errno.EPERM:
2116
raise error
2537
if error.errno != errno.EPERM:
2538
raise
2117
2539
2118
2540
if debug:
2119
2541
# Enable all possible GnuTLS debugging
2126
2548
def debug_gnutls(level, string):
2127
2549
logger.debug("GnuTLS: %s", string[:-1])
2128
2550
2129
(gnutls.library.functions
2130
.gnutls_global_set_log_function(debug_gnutls))
2551
gnutls.library.functions.gnutls_global_set_log_function(
2552
debug_gnutls)
2131
2553
2132
2554
# Redirect stdin so all checkers get /dev/null
2133
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2555
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2134
2556
os.dup2(null, sys.stdin.fileno())
2135
2557
if null > 2:
2136
2558
os.close(null)
2137
else:
2138
# No console logging
2139
logger.removeHandler(console)
2140
2559
2141
2560
# Need to fork before connecting to D-Bus
2142
if not debug:
2561
if not foreground:
2143
2562
# Close all input and output, do double fork, etc.
2144
2563
daemon()
2145
2564
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
2146
2569
global main_loop
2147
2570
# From the Avahi example code
2148
DBusGMainLoop(set_as_default=True )
2571
DBusGMainLoop(set_as_default=True)
2149
2572
main_loop = gobject.MainLoop()
2150
2573
bus = dbus.SystemBus()
2151
2574
# End of Avahi example code
2152
2575
if use_dbus:
2153
2576
try:
2154
2577
bus_name = dbus.service.BusName("se.recompile.Mandos",
2155
bus, do_not_queue=True)
2156
old_bus_name = (dbus.service.BusName
2157
("se.bsnet.fukt.Mandos", bus,
2158
do_not_queue=True))
2159
except dbus.exceptions.NameExistsException as e:
2160
logger.error(unicode(e) + ", disabling D-Bus")
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)
2161
2585
use_dbus = False
2162
2586
server_settings["use_dbus"] = False
2163
2587
tcp_server.use_dbus = False
2164
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2165
service = AvahiServiceToSyslog(name =
2166
server_settings["servicename"],
2167
servicetype = "_mandos._tcp",
2168
protocol = protocol, bus = bus)
2169
if server_settings["interface"]:
2170
service.interface = (if_nametoindex
2171
(str(server_settings["interface"])))
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"))
2172
2598
2173
2599
global multiprocessing_manager
2174
2600
multiprocessing_manager = multiprocessing.Manager()
2175
2601
2176
2602
client_class = Client
2177
2603
if use_dbus:
2178
client_class = functools.partial(ClientDBusTransitional,
2179
bus = bus)
2180
2181
special_settings = {
2182
# Some settings need to be accessd by special methods;
2183
# booleans need .getboolean(), etc. Here is a list of them:
2184
"approved_by_default":
2185
lambda section:
2186
client_config.getboolean(section, "approved_by_default"),
2187
"enabled":
2188
lambda section:
2189
client_config.getboolean(section, "enabled"),
2190
}
2191
# Construct a new dict of client settings of this form:
2192
# { client_name: {setting_name: value, ...}, ...}
2193
# with exceptions for any special settings as defined above
2194
client_settings = dict((clientname,
2195
dict((setting,
2196
(value
2197
if setting not in special_settings
2198
else special_settings[setting]
2199
(clientname)))
2200
for setting, value in
2201
client_config.items(clientname)))
2202
for clientname in client_config.sections())
2203
2604
client_class = functools.partial(ClientDBus, bus = bus)
2605
2606
client_settings = Client.config_parser(client_config)
2204
2607
old_client_settings = {}
2205
clients_data = []
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()
2206
2617
2207
2618
# Get client data and settings from last running state.
2208
2619
if server_settings["restore"]:
2209
2620
try:
2210
2621
with open(stored_state_path, "rb") as stored_state:
2211
clients_data, old_client_settings = (pickle.load
2212
(stored_state))
2622
clients_data, old_client_settings = pickle.load(
2623
stored_state)
2213
2624
os.remove(stored_state_path)
2214
2625
except IOError as e:
2215
logger.warning("Could not load persistent state: {0}"
2216
.format(e))
2217
if e.errno != errno.ENOENT:
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)
2218
2632
raise
2633
except EOFError as e:
2634
logger.warning("Could not load persistent state: "
2635
"EOFError:",
2636
exc_info=e)
2219
2637
2220
with Crypto() as crypt:
2221
for client in clients_data:
2222
client_name = client["name"]
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
2223
2643
2224
2644
# Decide which value to use after restoring saved state.
2225
2645
# We have three different values: Old config file,
2231
2651
# For each value in new config, check if it
2232
2652
# differs from the old config value (Except for
2233
2653
# the "secret" attribute)
2234
if (name != "secret" and
2235
value != old_client_settings[client_name]
2236
[name]):
2237
setattr(client, name, value)
2654
if (name != "secret"
2655
and (value !=
2656
old_client_settings[client_name][name])):
2657
client[name] = value
2238
2658
except KeyError:
2239
2659
pass
2240
2660
2241
2661
# Clients who has passed its expire date can still be
2242
# enabled if its last checker was sucessful. Clients
2243
# whose checker failed before we stored its state is
2244
# assumed to have failed all checkers during downtime.
2245
if client["enabled"] and client["last_checked_ok"]:
2246
if ((datetime.datetime.utcnow()
2247
- client["last_checked_ok"])
2248
> client["interval"]):
2249
if client["last_checker_status"] != 0:
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"]))
2250
2681
client["enabled"] = False
2251
2682
else:
2252
client["expires"] = (datetime.datetime
2253
.utcnow()
2254
+ client["timeout"])
2255
2256
client["changedstate"] = (multiprocessing_manager
2257
.Condition
2258
(multiprocessing_manager
2259
.Lock()))
2260
if use_dbus:
2261
new_client = (ClientDBusTransitional.__new__
2262
(ClientDBusTransitional))
2263
tcp_server.clients[client_name] = new_client
2264
new_client.bus = bus
2265
for name, value in client.iteritems():
2266
setattr(new_client, name, value)
2267
client_object_name = unicode(client_name).translate(
2268
{ord("."): ord("_"),
2269
ord("-"): ord("_")})
2270
new_client.dbus_object_path = (dbus.ObjectPath
2271
("/clients/"
2272
+ client_object_name))
2273
DBusObjectWithProperties.__init__(new_client,
2274
new_client.bus,
2275
new_client
2276
.dbus_object_path)
2277
else:
2278
tcp_server.clients[client_name] = (Client.__new__
2279
(Client))
2280
for name, value in client.iteritems():
2281
setattr(tcp_server.clients[client_name],
2282
name, value)
2283
2683
client["expires"] = (
2684
datetime.datetime.utcnow()
2685
+ client["timeout"])
2686
logger.debug("Last checker succeeded,"
2687
" keeping {} enabled".format(
2688
client_name))
2284
2689
try:
2285
tcp_server.clients[client_name].secret = (
2286
crypt.decrypt(tcp_server.clients[client_name]
2287
.encrypted_secret,
2288
client_settings[client_name]
2289
["secret"]))
2290
except CryptoError:
2690
client["secret"] = pgp.decrypt(
2691
client["encrypted_secret"],
2692
client_settings[client_name]["secret"])
2693
except PGPError:
2291
2694
# If decryption fails, we use secret from new settings
2292
tcp_server.clients[client_name].secret = (
2293
client_settings[client_name]["secret"])
2294
2295
# Create/remove clients based on new changes made to config
2296
for clientname in set(old_client_settings) - set(client_settings):
2297
del tcp_server.clients[clientname]
2298
for clientname in set(client_settings) - set(old_client_settings):
2299
tcp_server.clients[clientname] = (client_class(name
2300
= clientname,
2301
config =
2302
client_settings
2303
[clientname]))
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)
2304
2714
2305
2715
if not tcp_server.clients:
2306
2716
logger.warning("No clients defined")
2307
2308
if not debug:
2309
try:
2310
with pidfile:
2311
pid = os.getpid()
2312
pidfile.write(str(pid) + "\n".encode("utf-8"))
2313
del pidfile
2314
except IOError:
2315
logger.error("Could not write to file %r with PID %d",
2316
pidfilename, pid)
2317
except NameError:
2318
# "pidfile" was never created
2319
pass
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
2320
2728
del pidfilename
2321
2322
signal.signal(signal.SIGINT, signal.SIG_IGN)
2323
2729
2324
2730
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2325
2731
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2326
2732
2327
2733
if use_dbus:
2328
class MandosDBusService(dbus.service.Object):
2734
2735
@alternate_dbus_interfaces(
2736
{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
2737
class MandosDBusService(DBusObjectWithProperties):
2329
2738
"""A D-Bus proxy object"""
2739
2330
2740
def __init__(self):
2331
2741
dbus.service.Object.__init__(self, bus, "/")
2742
2332
2743
_interface = "se.recompile.Mandos"
2333
2744
2745
@dbus_interface_annotations(_interface)
2746
def _foo(self):
2747
return {
2748
"org.freedesktop.DBus.Property.EmitsChangedSignal":
2749
"false" }
2750
2334
2751
@dbus.service.signal(_interface, signature="o")
2335
2752
def ClientAdded(self, objpath):
2336
2753
"D-Bus signal"
2349
2766
@dbus.service.method(_interface, out_signature="ao")
2350
2767
def GetAllClients(self):
2351
2768
"D-Bus method"
2352
return dbus.Array(c.dbus_object_path
2353
for c in
2769
return dbus.Array(c.dbus_object_path for c in
2354
2770
tcp_server.clients.itervalues())
2355
2771
2356
2772
@dbus.service.method(_interface,
2358
2774
def GetAllClientsWithProperties(self):
2359
2775
"D-Bus method"
2360
2776
return dbus.Dictionary(
2361
((c.dbus_object_path, c.GetAll(""))
2362
for c in tcp_server.clients.itervalues()),
2777
{ c.dbus_object_path: c.GetAll("")
2778
for c in tcp_server.clients.itervalues() },
2363
2779
signature="oa{sv}")
2364
2780
2365
2781
@dbus.service.method(_interface, in_signature="o")
2378
2794
2379
2795
del _interface
2380
2796
2381
class MandosDBusServiceTransitional(MandosDBusService):
2382
__metaclass__ = AlternateDBusNamesMetaclass
2383
mandos_dbus_service = MandosDBusServiceTransitional()
2797
mandos_dbus_service = MandosDBusService()
2384
2798
2385
2799
def cleanup():
2386
2800
"Cleanup function; run on exit"
2387
service.cleanup()
2801
if zeroconf:
2802
service.cleanup()
2388
2803
2389
2804
multiprocessing.active_children()
2805
wnull.close()
2390
2806
if not (tcp_server.clients or client_settings):
2391
2807
return
2392
2808
2393
2809
# Store client before exiting. Secrets are encrypted with key
2394
2810
# based on what config file has. If config file is
2395
2811
# removed/edited, old secret will thus be unrecovable.
2396
clients = []
2397
with Crypto() as crypt:
2812
clients = {}
2813
with PGPEngine() as pgp:
2398
2814
for client in tcp_server.clients.itervalues():
2399
2815
key = client_settings[client.name]["secret"]
2400
client.encrypted_secret = crypt.encrypt(client.secret,
2401
key)
2816
client.encrypted_secret = pgp.encrypt(client.secret,
2817
key)
2402
2818
client_dict = {}
2403
2819
2404
# A list of attributes that will not be stored when
2405
# shutting down.
2406
exclude = set(("bus", "changedstate", "secret"))
2407
for name, typ in (inspect.getmembers
2408
(dbus.service.Object)):
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):
2409
2826
exclude.add(name)
2410
2827
2411
2828
client_dict["encrypted_secret"] = (client
2414
2831
if attr not in exclude:
2415
2832
client_dict[attr] = getattr(client, attr)
2416
2833
2417
clients.append(client_dict)
2834
clients[client.name] = client_dict
2418
2835
del client_settings[client.name]["secret"]
2419
2836
2420
2837
try:
2421
with os.fdopen(os.open(stored_state_path,
2422
os.O_CREAT|os.O_WRONLY|os.O_TRUNC,
2423
0600), "wb") as stored_state:
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:
2424
2844
pickle.dump((clients, client_settings), stored_state)
2845
tempname = stored_state.name
2846
os.rename(tempname, stored_state_path)
2425
2847
except (IOError, OSError) as e:
2426
logger.warning("Could not save persistent state: {0}"
2427
.format(e))
2428
if e.errno not in (errno.ENOENT, errno.EACCES):
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)
2429
2859
raise
2430
2860
2431
2861
# Delete all clients, and settings from config
2437
2867
client.disable(quiet=True)
2438
2868
if use_dbus:
2439
2869
# Emit D-Bus signal
2440
mandos_dbus_service.ClientRemoved(client
2441
.dbus_object_path,
2442
client.name)
2870
mandos_dbus_service.ClientRemoved(
2871
client.dbus_object_path, client.name)
2443
2872
client_settings.clear()
2444
2873
2445
2874
atexit.register(cleanup)
2456
2885
tcp_server.server_activate()
2457
2886
2458
2887
# Find out what port we got
2459
service.port = tcp_server.socket.getsockname()[1]
2888
if zeroconf:
2889
service.port = tcp_server.socket.getsockname()[1]
2460
2890
if use_ipv6:
2461
2891
logger.info("Now listening on address %r, port %d,"
2462
" flowinfo %d, scope_id %d"
2463
% tcp_server.socket.getsockname())
2892
" flowinfo %d, scope_id %d",
2893
*tcp_server.socket.getsockname())
2464
2894
else: # IPv4
2465
logger.info("Now listening on address %r, port %d"
2466
% tcp_server.socket.getsockname())
2895
logger.info("Now listening on address %r, port %d",
2896
*tcp_server.socket.getsockname())
2467
2897
2468
2898
#service.interface = tcp_server.socket.getsockname()[3]
2469
2899
2470
2900
try:
2471
# From the Avahi example code
2472
try:
2473
service.activate()
2474
except dbus.exceptions.DBusException as error:
2475
logger.critical("DBusException: %s", error)
2476
cleanup()
2477
sys.exit(1)
2478
# End of Avahi example code
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
2479
2910
2480
2911
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2481
2912
lambda *args, **kwargs:
2485
2916
logger.debug("Starting main loop")
2486
2917
main_loop.run()
2487
2918
except AvahiError as error:
2488
logger.critical("AvahiError: %s", error)
2919
logger.critical("Avahi Error", exc_info=error)
2489
2920
cleanup()
2490
2921
sys.exit(1)
2491
2922
except KeyboardInterrupt:
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0