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- Committer: Teddy Hogeborn
- Date: 2012-06-01 21:48:12 UTC
- Revision ID: teddy@recompile.se-20120601214812-g7685v5oeiuhi2qw
* debian/copyright (Copyright): Join the two lines to one line.
* debian/mandos-client.README.Debian: Refer to new location of example
network hooks.
* debian/mandos-client.docs (network-hooks.d): Removed.
* debian/mandos-client.examples: New; contains "network-hooks.d".
* debian/rules (binary-common): Added "dh_installexamples".
(binary-common/dh_fixperms): Changed to exclude new location of
"network-hooks.d".
* init.d-mandos (status): Support new "status" action.
* debian/mandos-client.README.Debian: Refer to new location of example
network hooks.
* debian/mandos-client.docs (network-hooks.d): Removed.
* debian/mandos-client.examples: New; contains "network-hooks.d".
* debian/rules (binary-common): Added "dh_installexamples".
(binary-common/dh_fixperms): Changed to exclude new location of
"network-hooks.d".
* init.d-mandos (status): Support new "status" action.
- files removed:
- debian/upstream
- plugin-helpers
- files modified:
- DBUS-API
added
removed
mandos
1
#!/usr/bin/python2.7
1
#!/usr/bin/python
2
2
# -*- mode: python; coding: utf-8 -*-
3
3
#
4
4
# Mandos server - give out binary blobs to connecting clients.
11
11
# "AvahiService" class, and some lines in "main".
12
12
#
13
13
# Everything else is
14
# Copyright © 2008-2015 Teddy Hogeborn
15
# Copyright © 2008-2015 Björn Påhlsson
14
# Copyright © 2008-2012 Teddy Hogeborn
15
# Copyright © 2008-2012 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
36
36
37
37
from future_builtins import *
38
38
39
try:
40
import SocketServer as socketserver
41
except ImportError:
42
import socketserver
39
import SocketServer as socketserver
43
40
import socket
44
41
import argparse
45
42
import datetime
50
47
import gnutls.library.functions
51
48
import gnutls.library.constants
52
49
import gnutls.library.types
53
try:
54
import ConfigParser as configparser
55
except ImportError:
56
import configparser
50
import ConfigParser as configparser
57
51
import sys
58
52
import re
59
53
import os
68
62
import struct
69
63
import fcntl
70
64
import functools
71
try:
72
import cPickle as pickle
73
except ImportError:
74
import pickle
65
import cPickle as pickle
75
66
import multiprocessing
76
67
import types
77
68
import binascii
78
69
import tempfile
79
70
import itertools
80
import collections
81
import codecs
82
71
83
72
import dbus
84
73
import dbus.service
85
try:
86
import gobject
87
except ImportError:
88
from gi.repository import GObject as gobject
74
import gobject
89
75
import avahi
90
76
from dbus.mainloop.glib import DBusGMainLoop
91
77
import ctypes
92
78
import ctypes.util
93
79
import xml.dom.minidom
94
80
import inspect
81
import GnuPGInterface
95
82
96
83
try:
97
84
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
101
88
except ImportError:
102
89
SO_BINDTODEVICE = None
103
90
104
if sys.version_info.major == 2:
105
str = unicode
106
107
version = "1.7.0"
91
version = "1.5.5"
108
92
stored_state_file = "clients.pickle"
109
93
110
94
logger = logging.getLogger()
111
syslogger = None
95
syslogger = (logging.handlers.SysLogHandler
96
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
97
address = str("/dev/log")))
112
98
113
99
try:
114
if_nametoindex = ctypes.cdll.LoadLibrary(
115
ctypes.util.find_library("c")).if_nametoindex
100
if_nametoindex = (ctypes.cdll.LoadLibrary
101
(ctypes.util.find_library("c"))
102
.if_nametoindex)
116
103
except (OSError, AttributeError):
117
118
104
def if_nametoindex(interface):
119
105
"Get an interface index the hard way, i.e. using fcntl()"
120
106
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
121
107
with contextlib.closing(socket.socket()) as s:
122
108
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
123
struct.pack(b"16s16x", interface))
124
interface_index = struct.unpack("I", ifreq[16:20])[0]
109
struct.pack(str("16s16x"),
110
interface))
111
interface_index = struct.unpack(str("I"),
112
ifreq[16:20])[0]
125
113
return interface_index
126
114
127
115
128
116
def initlogger(debug, level=logging.WARNING):
129
117
"""init logger and add loglevel"""
130
118
131
global syslogger
132
syslogger = (logging.handlers.SysLogHandler(
133
facility = logging.handlers.SysLogHandler.LOG_DAEMON,
134
address = "/dev/log"))
135
119
syslogger.setFormatter(logging.Formatter
136
120
('Mandos [%(process)d]: %(levelname)s:'
137
121
' %(message)s'))
154
138
155
139
class PGPEngine(object):
156
140
"""A simple class for OpenPGP symmetric encryption & decryption"""
157
158
141
def __init__(self):
142
self.gnupg = GnuPGInterface.GnuPG()
159
143
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
160
self.gnupgargs = ['--batch',
161
'--home', self.tempdir,
162
'--force-mdc',
163
'--quiet',
164
'--no-use-agent']
144
self.gnupg = GnuPGInterface.GnuPG()
145
self.gnupg.options.meta_interactive = False
146
self.gnupg.options.homedir = self.tempdir
147
self.gnupg.options.extra_args.extend(['--force-mdc',
148
'--quiet',
149
'--no-use-agent'])
165
150
166
151
def __enter__(self):
167
152
return self
189
174
def password_encode(self, password):
190
175
# Passphrase can not be empty and can not contain newlines or
191
176
# NUL bytes. So we prefix it and hex encode it.
192
encoded = b"mandos" + binascii.hexlify(password)
193
if len(encoded) > 2048:
194
# GnuPG can't handle long passwords, so encode differently
195
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
196
.replace(b"\n", b"\\n")
197
.replace(b"\0", b"\\x00"))
198
return encoded
177
return b"mandos" + binascii.hexlify(password)
199
178
200
179
def encrypt(self, data, password):
201
passphrase = self.password_encode(password)
202
with tempfile.NamedTemporaryFile(
203
dir=self.tempdir) as passfile:
204
passfile.write(passphrase)
205
passfile.flush()
206
proc = subprocess.Popen(['gpg', '--symmetric',
207
'--passphrase-file',
208
passfile.name]
209
+ self.gnupgargs,
210
stdin = subprocess.PIPE,
211
stdout = subprocess.PIPE,
212
stderr = subprocess.PIPE)
213
ciphertext, err = proc.communicate(input = data)
214
if proc.returncode != 0:
215
raise PGPError(err)
180
self.gnupg.passphrase = self.password_encode(password)
181
with open(os.devnull, "w") as devnull:
182
try:
183
proc = self.gnupg.run(['--symmetric'],
184
create_fhs=['stdin', 'stdout'],
185
attach_fhs={'stderr': devnull})
186
with contextlib.closing(proc.handles['stdin']) as f:
187
f.write(data)
188
with contextlib.closing(proc.handles['stdout']) as f:
189
ciphertext = f.read()
190
proc.wait()
191
except IOError as e:
192
raise PGPError(e)
193
self.gnupg.passphrase = None
216
194
return ciphertext
217
195
218
196
def decrypt(self, data, password):
219
passphrase = self.password_encode(password)
220
with tempfile.NamedTemporaryFile(
221
dir = self.tempdir) as passfile:
222
passfile.write(passphrase)
223
passfile.flush()
224
proc = subprocess.Popen(['gpg', '--decrypt',
225
'--passphrase-file',
226
passfile.name]
227
+ self.gnupgargs,
228
stdin = subprocess.PIPE,
229
stdout = subprocess.PIPE,
230
stderr = subprocess.PIPE)
231
decrypted_plaintext, err = proc.communicate(input = data)
232
if proc.returncode != 0:
233
raise PGPError(err)
197
self.gnupg.passphrase = self.password_encode(password)
198
with open(os.devnull, "w") as devnull:
199
try:
200
proc = self.gnupg.run(['--decrypt'],
201
create_fhs=['stdin', 'stdout'],
202
attach_fhs={'stderr': devnull})
203
with contextlib.closing(proc.handles['stdin']) as f:
204
f.write(data)
205
with contextlib.closing(proc.handles['stdout']) as f:
206
decrypted_plaintext = f.read()
207
proc.wait()
208
except IOError as e:
209
raise PGPError(e)
210
self.gnupg.passphrase = None
234
211
return decrypted_plaintext
235
212
236
213
237
214
class AvahiError(Exception):
238
215
def __init__(self, value, *args, **kwargs):
239
216
self.value = value
240
return super(AvahiError, self).__init__(value, *args,
241
**kwargs)
242
217
super(AvahiError, self).__init__(value, *args, **kwargs)
218
def __unicode__(self):
219
return unicode(repr(self.value))
243
220
244
221
class AvahiServiceError(AvahiError):
245
222
pass
246
223
247
248
224
class AvahiGroupError(AvahiError):
249
225
pass
250
226
257
233
Used to optionally bind to the specified interface.
258
234
name: string; Example: 'Mandos'
259
235
type: string; Example: '_mandos._tcp'.
260
See <https://www.iana.org/assignments/service-names-port-numbers>
236
See <http://www.dns-sd.org/ServiceTypes.html>
261
237
port: integer; what port to announce
262
238
TXT: list of strings; TXT record for the service
263
239
domain: string; Domain to publish on, default to .local if empty.
270
246
bus: dbus.SystemBus()
271
247
"""
272
248
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):
249
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
250
servicetype = None, port = None, TXT = None,
251
domain = "", host = "", max_renames = 32768,
252
protocol = avahi.PROTO_UNSPEC, bus = None):
284
253
self.interface = interface
285
254
self.name = name
286
255
self.type = servicetype
296
265
self.bus = bus
297
266
self.entry_group_state_changed_match = None
298
267
299
def rename(self, remove=True):
268
def rename(self):
300
269
"""Derived from the Avahi example code"""
301
270
if self.rename_count >= self.max_renames:
302
271
logger.critical("No suitable Zeroconf service name found"
303
272
" after %i retries, exiting.",
304
273
self.rename_count)
305
274
raise AvahiServiceError("Too many renames")
306
self.name = str(
307
self.server.GetAlternativeServiceName(self.name))
308
self.rename_count += 1
275
self.name = unicode(self.server
276
.GetAlternativeServiceName(self.name))
309
277
logger.info("Changing Zeroconf service name to %r ...",
310
278
self.name)
311
if remove:
312
self.remove()
279
self.remove()
313
280
try:
314
281
self.add()
315
282
except dbus.exceptions.DBusException as error:
316
if (error.get_dbus_name()
317
== "org.freedesktop.Avahi.CollisionError"):
318
logger.info("Local Zeroconf service name collision.")
319
return self.rename(remove=False)
320
else:
321
logger.critical("D-Bus Exception", exc_info=error)
322
self.cleanup()
323
os._exit(1)
283
logger.critical("D-Bus Exception", exc_info=error)
284
self.cleanup()
285
os._exit(1)
286
self.rename_count += 1
324
287
325
288
def remove(self):
326
289
"""Derived from the Avahi example code"""
364
327
self.rename()
365
328
elif state == avahi.ENTRY_GROUP_FAILURE:
366
329
logger.critical("Avahi: Error in group state changed %s",
367
str(error))
368
raise AvahiGroupError("State changed: {!s}".format(error))
330
unicode(error))
331
raise AvahiGroupError("State changed: {0!s}"
332
.format(error))
369
333
370
334
def cleanup(self):
371
335
"""Derived from the Avahi example code"""
381
345
def server_state_changed(self, state, error=None):
382
346
"""Derived from the Avahi example code"""
383
347
logger.debug("Avahi server state change: %i", state)
384
bad_states = {
385
avahi.SERVER_INVALID: "Zeroconf server invalid",
386
avahi.SERVER_REGISTERING: None,
387
avahi.SERVER_COLLISION: "Zeroconf server name collision",
388
avahi.SERVER_FAILURE: "Zeroconf server failure",
389
}
348
bad_states = { avahi.SERVER_INVALID:
349
"Zeroconf server invalid",
350
avahi.SERVER_REGISTERING: None,
351
avahi.SERVER_COLLISION:
352
"Zeroconf server name collision",
353
avahi.SERVER_FAILURE:
354
"Zeroconf server failure" }
390
355
if state in bad_states:
391
356
if bad_states[state] is not None:
392
357
if error is None:
395
360
logger.error(bad_states[state] + ": %r", error)
396
361
self.cleanup()
397
362
elif state == avahi.SERVER_RUNNING:
398
try:
399
self.add()
400
except dbus.exceptions.DBusException as error:
401
if (error.get_dbus_name()
402
== "org.freedesktop.Avahi.CollisionError"):
403
logger.info("Local Zeroconf service name"
404
" collision.")
405
return self.rename(remove=False)
406
else:
407
logger.critical("D-Bus Exception", exc_info=error)
408
self.cleanup()
409
os._exit(1)
363
self.add()
410
364
else:
411
365
if error is None:
412
366
logger.debug("Unknown state: %r", state)
422
376
follow_name_owner_changes=True),
423
377
avahi.DBUS_INTERFACE_SERVER)
424
378
self.server.connect_to_signal("StateChanged",
425
self.server_state_changed)
379
self.server_state_changed)
426
380
self.server_state_changed(self.server.GetState())
427
381
428
382
429
383
class AvahiServiceToSyslog(AvahiService):
430
def rename(self, *args, **kwargs):
384
def rename(self):
431
385
"""Add the new name to the syslog messages"""
432
ret = AvahiService.rename(self, *args, **kwargs)
433
syslogger.setFormatter(logging.Formatter(
434
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
435
.format(self.name)))
386
ret = AvahiService.rename(self)
387
syslogger.setFormatter(logging.Formatter
388
('Mandos ({0}) [%(process)d]:'
389
' %(levelname)s: %(message)s'
390
.format(self.name)))
436
391
return ret
437
392
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()
393
394
def timedelta_to_milliseconds(td):
395
"Convert a datetime.timedelta() to milliseconds"
396
return ((td.days * 24 * 60 * 60 * 1000)
397
+ (td.seconds * 1000)
398
+ (td.microseconds // 1000))
399
447
400
448
401
class Client(object):
449
402
"""A representation of a client host served by this server.
476
429
last_checker_status: integer between 0 and 255 reflecting exit
477
430
status of last checker. -1 reflects crashed
478
431
checker, -2 means no checker completed yet.
479
last_checker_signal: The signal which killed the last checker, if
480
last_checker_status is -1
481
432
last_enabled: datetime.datetime(); (UTC) or None
482
433
name: string; from the config file, used in log messages and
483
434
D-Bus identifiers
488
439
runtime_expansions: Allowed attributes for runtime expansion.
489
440
expires: datetime.datetime(); time (UTC) when a client will be
490
441
disabled, or None
491
server_settings: The server_settings dict from main()
492
442
"""
493
443
494
444
runtime_expansions = ("approval_delay", "approval_duration",
496
446
"fingerprint", "host", "interval",
497
447
"last_approval_request", "last_checked_ok",
498
448
"last_enabled", "name", "timeout")
499
client_defaults = {
500
"timeout": "PT5M",
501
"extended_timeout": "PT15M",
502
"interval": "PT2M",
503
"checker": "fping -q -- %%(host)s",
504
"host": "",
505
"approval_delay": "PT0S",
506
"approval_duration": "PT1S",
507
"approved_by_default": "True",
508
"enabled": "True",
509
}
449
client_defaults = { "timeout": "5m",
450
"extended_timeout": "15m",
451
"interval": "2m",
452
"checker": "fping -q -- %%(host)s",
453
"host": "",
454
"approval_delay": "0s",
455
"approval_duration": "1s",
456
"approved_by_default": "True",
457
"enabled": "True",
458
}
459
460
def timeout_milliseconds(self):
461
"Return the 'timeout' attribute in milliseconds"
462
return timedelta_to_milliseconds(self.timeout)
463
464
def extended_timeout_milliseconds(self):
465
"Return the 'extended_timeout' attribute in milliseconds"
466
return timedelta_to_milliseconds(self.extended_timeout)
467
468
def interval_milliseconds(self):
469
"Return the 'interval' attribute in milliseconds"
470
return timedelta_to_milliseconds(self.interval)
471
472
def approval_delay_milliseconds(self):
473
return timedelta_to_milliseconds(self.approval_delay)
510
474
511
475
@staticmethod
512
476
def config_parser(config):
528
492
client["enabled"] = config.getboolean(client_name,
529
493
"enabled")
530
494
531
# Uppercase and remove spaces from fingerprint for later
532
# comparison purposes with return value from the
533
# fingerprint() function
534
495
client["fingerprint"] = (section["fingerprint"].upper()
535
496
.replace(" ", ""))
536
497
if "secret" in section:
541
502
"rb") as secfile:
542
503
client["secret"] = secfile.read()
543
504
else:
544
raise TypeError("No secret or secfile for section {}"
505
raise TypeError("No secret or secfile for section {0}"
545
506
.format(section))
546
507
client["timeout"] = string_to_delta(section["timeout"])
547
508
client["extended_timeout"] = string_to_delta(
558
519
559
520
return settings
560
521
561
def __init__(self, settings, name = None, server_settings=None):
522
def __init__(self, settings, name = None):
562
523
self.name = name
563
if server_settings is None:
564
server_settings = {}
565
self.server_settings = server_settings
566
524
# adding all client settings
567
for setting, value in settings.items():
525
for setting, value in settings.iteritems():
568
526
setattr(self, setting, value)
569
527
570
528
if self.enabled:
578
536
self.expires = None
579
537
580
538
logger.debug("Creating client %r", self.name)
539
# Uppercase and remove spaces from fingerprint for later
540
# comparison purposes with return value from the fingerprint()
541
# function
581
542
logger.debug(" Fingerprint: %s", self.fingerprint)
582
543
self.created = settings.get("created",
583
544
datetime.datetime.utcnow())
590
551
self.current_checker_command = None
591
552
self.approved = None
592
553
self.approvals_pending = 0
593
self.changedstate = multiprocessing_manager.Condition(
594
multiprocessing_manager.Lock())
595
self.client_structure = [attr
596
for attr in self.__dict__.iterkeys()
554
self.changedstate = (multiprocessing_manager
555
.Condition(multiprocessing_manager
556
.Lock()))
557
self.client_structure = [attr for attr in
558
self.__dict__.iterkeys()
597
559
if not attr.startswith("_")]
598
560
self.client_structure.append("client_structure")
599
561
600
for name, t in inspect.getmembers(
601
type(self), lambda obj: isinstance(obj, property)):
562
for name, t in inspect.getmembers(type(self),
563
lambda obj:
564
isinstance(obj,
565
property)):
602
566
if not name.startswith("_"):
603
567
self.client_structure.append(name)
604
568
646
610
# and every interval from then on.
647
611
if self.checker_initiator_tag is not None:
648
612
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)
613
self.checker_initiator_tag = (gobject.timeout_add
614
(self.interval_milliseconds(),
615
self.start_checker))
652
616
# Schedule a disable() when 'timeout' has passed
653
617
if self.disable_initiator_tag is not None:
654
618
gobject.source_remove(self.disable_initiator_tag)
655
self.disable_initiator_tag = gobject.timeout_add(
656
int(self.timeout.total_seconds() * 1000), self.disable)
619
self.disable_initiator_tag = (gobject.timeout_add
620
(self.timeout_milliseconds(),
621
self.disable))
657
622
# Also start a new checker *right now*.
658
623
self.start_checker()
659
624
660
def checker_callback(self, source, condition, connection,
661
command):
625
def checker_callback(self, pid, condition, command):
662
626
"""The checker has completed, so take appropriate actions."""
663
627
self.checker_callback_tag = None
664
628
self.checker = None
665
# Read return code from connection (see call_pipe)
666
returncode = connection.recv()
667
connection.close()
668
669
if returncode >= 0:
670
self.last_checker_status = returncode
671
self.last_checker_signal = None
629
if os.WIFEXITED(condition):
630
self.last_checker_status = os.WEXITSTATUS(condition)
672
631
if self.last_checker_status == 0:
673
632
logger.info("Checker for %(name)s succeeded",
674
633
vars(self))
675
634
self.checked_ok()
676
635
else:
677
logger.info("Checker for %(name)s failed", vars(self))
636
logger.info("Checker for %(name)s failed",
637
vars(self))
678
638
else:
679
639
self.last_checker_status = -1
680
self.last_checker_signal = -returncode
681
640
logger.warning("Checker for %(name)s crashed?",
682
641
vars(self))
683
return False
684
642
685
643
def checked_ok(self):
686
644
"""Assert that the client has been seen, alive and well."""
687
645
self.last_checked_ok = datetime.datetime.utcnow()
688
646
self.last_checker_status = 0
689
self.last_checker_signal = None
690
647
self.bump_timeout()
691
648
692
649
def bump_timeout(self, timeout=None):
697
654
gobject.source_remove(self.disable_initiator_tag)
698
655
self.disable_initiator_tag = None
699
656
if getattr(self, "enabled", False):
700
self.disable_initiator_tag = gobject.timeout_add(
701
int(timeout.total_seconds() * 1000), self.disable)
657
self.disable_initiator_tag = (gobject.timeout_add
658
(timedelta_to_milliseconds
659
(timeout), self.disable))
702
660
self.expires = datetime.datetime.utcnow() + timeout
703
661
704
662
def need_approval(self):
718
676
# than 'timeout' for the client to be disabled, which is as it
719
677
# should be.
720
678
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
679
# If a checker exists, make sure it is not a zombie
680
try:
681
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
682
except (AttributeError, OSError) as error:
683
if (isinstance(error, OSError)
684
and error.errno != errno.ECHILD):
685
raise error
686
else:
687
if pid:
688
logger.warning("Checker was a zombie")
689
gobject.source_remove(self.checker_callback_tag)
690
self.checker_callback(pid, status,
691
self.current_checker_command)
725
692
# Start a new checker if needed
726
693
if self.checker is None:
727
694
# Escape attributes for the shell
728
escaped_attrs = {
729
attr: re.escape(str(getattr(self, attr)))
730
for attr in self.runtime_expansions }
695
escaped_attrs = dict(
696
(attr, re.escape(unicode(getattr(self, attr))))
697
for attr in
698
self.runtime_expansions)
731
699
try:
732
700
command = self.checker_command % escaped_attrs
733
701
except TypeError as error:
734
702
logger.error('Could not format string "%s"',
735
self.checker_command,
703
self.checker_command, exc_info=error)
704
return True # Try again later
705
self.current_checker_command = command
706
try:
707
logger.info("Starting checker %r for %s",
708
command, self.name)
709
# We don't need to redirect stdout and stderr, since
710
# in normal mode, that is already done by daemon(),
711
# and in debug mode we don't want to. (Stdin is
712
# always replaced by /dev/null.)
713
self.checker = subprocess.Popen(command,
714
close_fds=True,
715
shell=True, cwd="/")
716
except OSError as error:
717
logger.error("Failed to start subprocess",
736
718
exc_info=error)
737
return True # Try again later
738
self.current_checker_command = command
739
logger.info("Starting checker %r for %s", command,
740
self.name)
741
# We don't need to redirect stdout and stderr, since
742
# in normal mode, that is already done by daemon(),
743
# and in debug mode we don't want to. (Stdin is
744
# always replaced by /dev/null.)
745
# The exception is when not debugging but nevertheless
746
# running in the foreground; use the previously
747
# created wnull.
748
popen_args = { "close_fds": True,
749
"shell": True,
750
"cwd": "/" }
751
if (not self.server_settings["debug"]
752
and self.server_settings["foreground"]):
753
popen_args.update({"stdout": wnull,
754
"stderr": wnull })
755
pipe = multiprocessing.Pipe(duplex = False)
756
self.checker = multiprocessing.Process(
757
target = call_pipe,
758
args = (pipe[1], subprocess.call, command),
759
kwargs = popen_args)
760
self.checker.start()
761
self.checker_callback_tag = gobject.io_add_watch(
762
pipe[0].fileno(), gobject.IO_IN,
763
self.checker_callback, pipe[0], command)
719
self.checker_callback_tag = (gobject.child_watch_add
720
(self.checker.pid,
721
self.checker_callback,
722
data=command))
723
# The checker may have completed before the gobject
724
# watch was added. Check for this.
725
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
726
if pid:
727
gobject.source_remove(self.checker_callback_tag)
728
self.checker_callback(pid, status, command)
764
729
# Re-run this periodically if run by gobject.timeout_add
765
730
return True
766
731
772
737
if getattr(self, "checker", None) is None:
773
738
return
774
739
logger.debug("Stopping checker for %(name)s", vars(self))
775
self.checker.terminate()
740
try:
741
self.checker.terminate()
742
#time.sleep(0.5)
743
#if self.checker.poll() is None:
744
# self.checker.kill()
745
except OSError as error:
746
if error.errno != errno.ESRCH: # No such process
747
raise
776
748
self.checker = None
777
749
778
750
779
def dbus_service_property(dbus_interface,
780
signature="v",
781
access="readwrite",
782
byte_arrays=False):
751
def dbus_service_property(dbus_interface, signature="v",
752
access="readwrite", byte_arrays=False):
783
753
"""Decorators for marking methods of a DBusObjectWithProperties to
784
754
become properties on the D-Bus.
785
755
794
764
# "Set" method, so we fail early here:
795
765
if byte_arrays and signature != "ay":
796
766
raise ValueError("Byte arrays not supported for non-'ay'"
797
" signature {!r}".format(signature))
798
767
" signature {0!r}".format(signature))
799
768
def decorator(func):
800
769
func._dbus_is_property = True
801
770
func._dbus_interface = dbus_interface
806
775
func._dbus_name = func._dbus_name[:-14]
807
776
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
808
777
return func
809
810
778
return decorator
811
779
812
780
821
789
"org.freedesktop.DBus.Property.EmitsChangedSignal":
822
790
"false"}
823
791
"""
824
825
792
def decorator(func):
826
793
func._dbus_is_interface = True
827
794
func._dbus_interface = dbus_interface
828
795
func._dbus_name = dbus_interface
829
796
return func
830
831
797
return decorator
832
798
833
799
835
801
"""Decorator to annotate D-Bus methods, signals or properties
836
802
Usage:
837
803
838
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
839
"org.freedesktop.DBus.Property."
840
"EmitsChangedSignal": "false"})
841
804
@dbus_service_property("org.example.Interface", signature="b",
842
805
access="r")
806
@dbus_annotations({{"org.freedesktop.DBus.Deprecated": "true",
807
"org.freedesktop.DBus.Property."
808
"EmitsChangedSignal": "false"})
843
809
def Property_dbus_property(self):
844
810
return dbus.Boolean(False)
845
846
See also the DBusObjectWithAnnotations class.
847
811
"""
848
849
812
def decorator(func):
850
813
func._dbus_annotations = annotations
851
814
return func
852
853
815
return decorator
854
816
855
817
856
818
class DBusPropertyException(dbus.exceptions.DBusException):
857
819
"""A base class for D-Bus property-related exceptions
858
820
"""
859
pass
821
def __unicode__(self):
822
return unicode(str(self))
860
823
861
824
862
825
class DBusPropertyAccessException(DBusPropertyException):
871
834
pass
872
835
873
836
874
class DBusObjectWithAnnotations(dbus.service.Object):
875
"""A D-Bus object with annotations.
837
class DBusObjectWithProperties(dbus.service.Object):
838
"""A D-Bus object with properties.
876
839
877
Classes inheriting from this can use the dbus_annotations
878
decorator to add annotations to methods or signals.
840
Classes inheriting from this can use the dbus_service_property
841
decorator to expose methods as D-Bus properties. It exposes the
842
standard Get(), Set(), and GetAll() methods on the D-Bus.
879
843
"""
880
844
881
845
@staticmethod
885
849
If called like _is_dbus_thing("method") it returns a function
886
850
suitable for use as predicate to inspect.getmembers().
887
851
"""
888
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
852
return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),
889
853
False)
890
854
891
855
def _get_all_dbus_things(self, thing):
892
856
"""Returns a generator of (name, attribute) pairs
893
857
"""
894
return ((getattr(athing.__get__(self), "_dbus_name", name),
858
return ((getattr(athing.__get__(self), "_dbus_name",
859
name),
895
860
athing.__get__(self))
896
861
for cls in self.__class__.__mro__
897
862
for name, athing in
898
inspect.getmembers(cls, self._is_dbus_thing(thing)))
899
900
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
901
out_signature = "s",
902
path_keyword = 'object_path',
903
connection_keyword = 'connection')
904
def Introspect(self, object_path, connection):
905
"""Overloading of standard D-Bus method.
906
907
Inserts annotation tags on methods and signals.
908
"""
909
xmlstring = dbus.service.Object.Introspect(self, object_path,
910
connection)
911
try:
912
document = xml.dom.minidom.parseString(xmlstring)
913
914
for if_tag in document.getElementsByTagName("interface"):
915
# Add annotation tags
916
for typ in ("method", "signal"):
917
for tag in if_tag.getElementsByTagName(typ):
918
annots = dict()
919
for name, prop in (self.
920
_get_all_dbus_things(typ)):
921
if (name == tag.getAttribute("name")
922
and prop._dbus_interface
923
== if_tag.getAttribute("name")):
924
annots.update(getattr(
925
prop, "_dbus_annotations", {}))
926
for name, value in annots.items():
927
ann_tag = document.createElement(
928
"annotation")
929
ann_tag.setAttribute("name", name)
930
ann_tag.setAttribute("value", value)
931
tag.appendChild(ann_tag)
932
# Add interface annotation tags
933
for annotation, value in dict(
934
itertools.chain.from_iterable(
935
annotations().items()
936
for name, annotations
937
in self._get_all_dbus_things("interface")
938
if name == if_tag.getAttribute("name")
939
)).items():
940
ann_tag = document.createElement("annotation")
941
ann_tag.setAttribute("name", annotation)
942
ann_tag.setAttribute("value", value)
943
if_tag.appendChild(ann_tag)
944
# Fix argument name for the Introspect method itself
945
if (if_tag.getAttribute("name")
946
== dbus.INTROSPECTABLE_IFACE):
947
for cn in if_tag.getElementsByTagName("method"):
948
if cn.getAttribute("name") == "Introspect":
949
for arg in cn.getElementsByTagName("arg"):
950
if (arg.getAttribute("direction")
951
== "out"):
952
arg.setAttribute("name",
953
"xml_data")
954
xmlstring = document.toxml("utf-8")
955
document.unlink()
956
except (AttributeError, xml.dom.DOMException,
957
xml.parsers.expat.ExpatError) as error:
958
logger.error("Failed to override Introspection method",
959
exc_info=error)
960
return xmlstring
961
962
963
class DBusObjectWithProperties(DBusObjectWithAnnotations):
964
"""A D-Bus object with properties.
965
966
Classes inheriting from this can use the dbus_service_property
967
decorator to expose methods as D-Bus properties. It exposes the
968
standard Get(), Set(), and GetAll() methods on the D-Bus.
969
"""
863
inspect.getmembers(cls,
864
self._is_dbus_thing(thing)))
970
865
971
866
def _get_dbus_property(self, interface_name, property_name):
972
867
"""Returns a bound method if one exists which is a D-Bus
973
868
property with the specified name and interface.
974
869
"""
975
for cls in self.__class__.__mro__:
976
for name, value in inspect.getmembers(
977
cls, self._is_dbus_thing("property")):
870
for cls in self.__class__.__mro__:
871
for name, value in (inspect.getmembers
872
(cls,
873
self._is_dbus_thing("property"))):
978
874
if (value._dbus_name == property_name
979
875
and value._dbus_interface == interface_name):
980
876
return value.__get__(self)
981
877
982
878
# No such property
983
raise DBusPropertyNotFound("{}:{}.{}".format(
984
self.dbus_object_path, interface_name, property_name))
985
986
@classmethod
987
def _get_all_interface_names(cls):
988
"""Get a sequence of all interfaces supported by an object"""
989
return (name for name in set(getattr(getattr(x, attr),
990
"_dbus_interface", None)
991
for x in (inspect.getmro(cls))
992
for attr in dir(x))
993
if name is not None)
994
995
@dbus.service.method(dbus.PROPERTIES_IFACE,
996
in_signature="ss",
879
raise DBusPropertyNotFound(self.dbus_object_path + ":"
880
+ interface_name + "."
881
+ property_name)
882
883
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
997
884
out_signature="v")
998
885
def Get(self, interface_name, property_name):
999
886
"""Standard D-Bus property Get() method, see D-Bus standard.
1017
904
# The byte_arrays option is not supported yet on
1018
905
# signatures other than "ay".
1019
906
if prop._dbus_signature != "ay":
1020
raise ValueError("Byte arrays not supported for non-"
1021
"'ay' signature {!r}"
1022
.format(prop._dbus_signature))
907
raise ValueError
1023
908
value = dbus.ByteArray(b''.join(chr(byte)
1024
909
for byte in value))
1025
910
prop(value)
1026
911
1027
@dbus.service.method(dbus.PROPERTIES_IFACE,
1028
in_signature="s",
912
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1029
913
out_signature="a{sv}")
1030
914
def GetAll(self, interface_name):
1031
915
"""Standard D-Bus property GetAll() method, see D-Bus
1046
930
if not hasattr(value, "variant_level"):
1047
931
properties[name] = value
1048
932
continue
1049
properties[name] = type(value)(
1050
value, variant_level = value.variant_level + 1)
933
properties[name] = type(value)(value, variant_level=
934
value.variant_level+1)
1051
935
return dbus.Dictionary(properties, signature="sv")
1052
936
1053
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1054
def PropertiesChanged(self, interface_name, changed_properties,
1055
invalidated_properties):
1056
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1057
standard.
1058
"""
1059
pass
1060
1061
937
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1062
938
out_signature="s",
1063
939
path_keyword='object_path',
1067
943
1068
944
Inserts property tags and interface annotation tags.
1069
945
"""
1070
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1071
object_path,
1072
connection)
946
xmlstring = dbus.service.Object.Introspect(self, object_path,
947
connection)
1073
948
try:
1074
949
document = xml.dom.minidom.parseString(xmlstring)
1075
1076
950
def make_tag(document, name, prop):
1077
951
e = document.createElement("property")
1078
952
e.setAttribute("name", name)
1079
953
e.setAttribute("type", prop._dbus_signature)
1080
954
e.setAttribute("access", prop._dbus_access)
1081
955
return e
1082
1083
956
for if_tag in document.getElementsByTagName("interface"):
1084
957
# Add property tags
1085
958
for tag in (make_tag(document, name, prop)
1088
961
if prop._dbus_interface
1089
962
== if_tag.getAttribute("name")):
1090
963
if_tag.appendChild(tag)
1091
# Add annotation tags for properties
1092
for tag in if_tag.getElementsByTagName("property"):
1093
annots = dict()
1094
for name, prop in self._get_all_dbus_things(
1095
"property"):
1096
if (name == tag.getAttribute("name")
1097
and prop._dbus_interface
1098
== if_tag.getAttribute("name")):
1099
annots.update(getattr(
1100
prop, "_dbus_annotations", {}))
1101
for name, value in annots.items():
1102
ann_tag = document.createElement(
1103
"annotation")
1104
ann_tag.setAttribute("name", name)
1105
ann_tag.setAttribute("value", value)
1106
tag.appendChild(ann_tag)
964
# Add annotation tags
965
for typ in ("method", "signal", "property"):
966
for tag in if_tag.getElementsByTagName(typ):
967
annots = dict()
968
for name, prop in (self.
969
_get_all_dbus_things(typ)):
970
if (name == tag.getAttribute("name")
971
and prop._dbus_interface
972
== if_tag.getAttribute("name")):
973
annots.update(getattr
974
(prop,
975
"_dbus_annotations",
976
{}))
977
for name, value in annots.iteritems():
978
ann_tag = document.createElement(
979
"annotation")
980
ann_tag.setAttribute("name", name)
981
ann_tag.setAttribute("value", value)
982
tag.appendChild(ann_tag)
983
# Add interface annotation tags
984
for annotation, value in dict(
985
itertools.chain.from_iterable(
986
annotations().iteritems()
987
for name, annotations in
988
self._get_all_dbus_things("interface")
989
if name == if_tag.getAttribute("name")
990
)).iteritems():
991
ann_tag = document.createElement("annotation")
992
ann_tag.setAttribute("name", annotation)
993
ann_tag.setAttribute("value", value)
994
if_tag.appendChild(ann_tag)
1107
995
# Add the names to the return values for the
1108
996
# "org.freedesktop.DBus.Properties" methods
1109
997
if (if_tag.getAttribute("name")
1127
1015
exc_info=error)
1128
1016
return xmlstring
1129
1017
1130
try:
1131
dbus.OBJECT_MANAGER_IFACE
1132
except AttributeError:
1133
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1134
1135
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1136
"""A D-Bus object with an ObjectManager.
1137
1138
Classes inheriting from this exposes the standard
1139
GetManagedObjects call and the InterfacesAdded and
1140
InterfacesRemoved signals on the standard
1141
"org.freedesktop.DBus.ObjectManager" interface.
1142
1143
Note: No signals are sent automatically; they must be sent
1144
manually.
1145
"""
1146
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1147
out_signature = "a{oa{sa{sv}}}")
1148
def GetManagedObjects(self):
1149
"""This function must be overridden"""
1150
raise NotImplementedError()
1151
1152
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1153
signature = "oa{sa{sv}}")
1154
def InterfacesAdded(self, object_path, interfaces_and_properties):
1155
pass
1156
1157
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature = "oas")
1158
def InterfacesRemoved(self, object_path, interfaces):
1159
pass
1160
1161
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1162
out_signature = "s",
1163
path_keyword = 'object_path',
1164
connection_keyword = 'connection')
1165
def Introspect(self, object_path, connection):
1166
"""Overloading of standard D-Bus method.
1167
1168
Override return argument name of GetManagedObjects to be
1169
"objpath_interfaces_and_properties"
1170
"""
1171
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1172
object_path,
1173
connection)
1174
try:
1175
document = xml.dom.minidom.parseString(xmlstring)
1176
1177
for if_tag in document.getElementsByTagName("interface"):
1178
# Fix argument name for the GetManagedObjects method
1179
if (if_tag.getAttribute("name")
1180
== dbus.OBJECT_MANAGER_IFACE):
1181
for cn in if_tag.getElementsByTagName("method"):
1182
if (cn.getAttribute("name")
1183
== "GetManagedObjects"):
1184
for arg in cn.getElementsByTagName("arg"):
1185
if (arg.getAttribute("direction")
1186
== "out"):
1187
arg.setAttribute(
1188
"name",
1189
"objpath_interfaces"
1190
"_and_properties")
1191
xmlstring = document.toxml("utf-8")
1192
document.unlink()
1193
except (AttributeError, xml.dom.DOMException,
1194
xml.parsers.expat.ExpatError) as error:
1195
logger.error("Failed to override Introspection method",
1196
exc_info = error)
1197
return xmlstring
1198
1018
1199
1019
def datetime_to_dbus(dt, variant_level=0):
1200
1020
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1201
1021
if dt is None:
1202
1022
return dbus.String("", variant_level = variant_level)
1203
return dbus.String(dt.isoformat(), variant_level=variant_level)
1023
return dbus.String(dt.isoformat(),
1024
variant_level=variant_level)
1204
1025
1205
1026
1206
1027
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1226
1047
(from DBusObjectWithProperties) and interfaces (from the
1227
1048
dbus_interface_annotations decorator).
1228
1049
"""
1229
1230
1050
def wrapper(cls):
1231
1051
for orig_interface_name, alt_interface_name in (
1232
alt_interface_names.items()):
1052
alt_interface_names.iteritems()):
1233
1053
attr = {}
1234
1054
interface_names = set()
1235
1055
# Go though all attributes of the class
1237
1057
# Ignore non-D-Bus attributes, and D-Bus attributes
1238
1058
# with the wrong interface name
1239
1059
if (not hasattr(attribute, "_dbus_interface")
1240
or not attribute._dbus_interface.startswith(
1241
orig_interface_name)):
1060
or not attribute._dbus_interface
1061
.startswith(orig_interface_name)):
1242
1062
continue
1243
1063
# Create an alternate D-Bus interface name based on
1244
1064
# the current name
1245
alt_interface = attribute._dbus_interface.replace(
1246
orig_interface_name, alt_interface_name)
1065
alt_interface = (attribute._dbus_interface
1066
.replace(orig_interface_name,
1067
alt_interface_name))
1247
1068
interface_names.add(alt_interface)
1248
1069
# Is this a D-Bus signal?
1249
1070
if getattr(attribute, "_dbus_is_signal", False):
1250
if sys.version_info.major == 2:
1251
# Extract the original non-method undecorated
1252
# function by black magic
1253
nonmethod_func = (dict(
1071
# Extract the original non-method function by
1072
# black magic
1073
nonmethod_func = (dict(
1254
1074
zip(attribute.func_code.co_freevars,
1255
attribute.__closure__))
1256
["func"].cell_contents)
1257
else:
1258
nonmethod_func = attribute
1075
attribute.__closure__))["func"]
1076
.cell_contents)
1259
1077
# Create a new, but exactly alike, function
1260
1078
# object, and decorate it to be a new D-Bus signal
1261
1079
# with the alternate D-Bus interface name
1262
if sys.version_info.major == 2:
1263
new_function = types.FunctionType(
1264
nonmethod_func.func_code,
1265
nonmethod_func.func_globals,
1266
nonmethod_func.func_name,
1267
nonmethod_func.func_defaults,
1268
nonmethod_func.func_closure)
1269
else:
1270
new_function = types.FunctionType(
1271
nonmethod_func.__code__,
1272
nonmethod_func.__globals__,
1273
nonmethod_func.__name__,
1274
nonmethod_func.__defaults__,
1275
nonmethod_func.__closure__)
1276
new_function = (dbus.service.signal(
1277
alt_interface,
1278
attribute._dbus_signature)(new_function))
1080
new_function = (dbus.service.signal
1081
(alt_interface,
1082
attribute._dbus_signature)
1083
(types.FunctionType(
1084
nonmethod_func.func_code,
1085
nonmethod_func.func_globals,
1086
nonmethod_func.func_name,
1087
nonmethod_func.func_defaults,
1088
nonmethod_func.func_closure)))
1279
1089
# Copy annotations, if any
1280
1090
try:
1281
new_function._dbus_annotations = dict(
1282
attribute._dbus_annotations)
1091
new_function._dbus_annotations = (
1092
dict(attribute._dbus_annotations))
1283
1093
except AttributeError:
1284
1094
pass
1285
1095
# Define a creator of a function to call both the
1290
1100
"""This function is a scope container to pass
1291
1101
func1 and func2 to the "call_both" function
1292
1102
outside of its arguments"""
1293
1294
@functools.wraps(func2)
1295
1103
def call_both(*args, **kwargs):
1296
1104
"""This function will emit two D-Bus
1297
1105
signals by calling func1 and func2"""
1298
1106
func1(*args, **kwargs)
1299
1107
func2(*args, **kwargs)
1300
# Make wrapper function look like a D-Bus signal
1301
for name, attr in inspect.getmembers(func2):
1302
if name.startswith("_dbus_"):
1303
setattr(call_both, name, attr)
1304
1305
1108
return call_both
1306
1109
# Create the "call_both" function and add it to
1307
1110
# the class
1312
1115
# object. Decorate it to be a new D-Bus method
1313
1116
# with the alternate D-Bus interface name. Add it
1314
1117
# to the class.
1315
attr[attrname] = (
1316
dbus.service.method(
1317
alt_interface,
1318
attribute._dbus_in_signature,
1319
attribute._dbus_out_signature)
1320
(types.FunctionType(attribute.func_code,
1321
attribute.func_globals,
1322
attribute.func_name,
1323
attribute.func_defaults,
1324
attribute.func_closure)))
1118
attr[attrname] = (dbus.service.method
1119
(alt_interface,
1120
attribute._dbus_in_signature,
1121
attribute._dbus_out_signature)
1122
(types.FunctionType
1123
(attribute.func_code,
1124
attribute.func_globals,
1125
attribute.func_name,
1126
attribute.func_defaults,
1127
attribute.func_closure)))
1325
1128
# Copy annotations, if any
1326
1129
try:
1327
attr[attrname]._dbus_annotations = dict(
1328
attribute._dbus_annotations)
1130
attr[attrname]._dbus_annotations = (
1131
dict(attribute._dbus_annotations))
1329
1132
except AttributeError:
1330
1133
pass
1331
1134
# Is this a D-Bus property?
1334
1137
# object, and decorate it to be a new D-Bus
1335
1138
# property with the alternate D-Bus interface
1336
1139
# name. Add it to the class.
1337
attr[attrname] = (dbus_service_property(
1338
alt_interface, attribute._dbus_signature,
1339
attribute._dbus_access,
1340
attribute._dbus_get_args_options
1341
["byte_arrays"])
1342
(types.FunctionType(
1343
attribute.func_code,
1344
attribute.func_globals,
1345
attribute.func_name,
1346
attribute.func_defaults,
1347
attribute.func_closure)))
1140
attr[attrname] = (dbus_service_property
1141
(alt_interface,
1142
attribute._dbus_signature,
1143
attribute._dbus_access,
1144
attribute
1145
._dbus_get_args_options
1146
["byte_arrays"])
1147
(types.FunctionType
1148
(attribute.func_code,
1149
attribute.func_globals,
1150
attribute.func_name,
1151
attribute.func_defaults,
1152
attribute.func_closure)))
1348
1153
# Copy annotations, if any
1349
1154
try:
1350
attr[attrname]._dbus_annotations = dict(
1351
attribute._dbus_annotations)
1155
attr[attrname]._dbus_annotations = (
1156
dict(attribute._dbus_annotations))
1352
1157
except AttributeError:
1353
1158
pass
1354
1159
# Is this a D-Bus interface?
1357
1162
# object. Decorate it to be a new D-Bus interface
1358
1163
# with the alternate D-Bus interface name. Add it
1359
1164
# to the class.
1360
attr[attrname] = (
1361
dbus_interface_annotations(alt_interface)
1362
(types.FunctionType(attribute.func_code,
1363
attribute.func_globals,
1364
attribute.func_name,
1365
attribute.func_defaults,
1366
attribute.func_closure)))
1165
attr[attrname] = (dbus_interface_annotations
1166
(alt_interface)
1167
(types.FunctionType
1168
(attribute.func_code,
1169
attribute.func_globals,
1170
attribute.func_name,
1171
attribute.func_defaults,
1172
attribute.func_closure)))
1367
1173
if deprecate:
1368
1174
# Deprecate all alternate interfaces
1369
iname="_AlternateDBusNames_interface_annotation{}"
1175
iname="_AlternateDBusNames_interface_annotation{0}"
1370
1176
for interface_name in interface_names:
1371
1372
1177
@dbus_interface_annotations(interface_name)
1373
1178
def func(self):
1374
1179
return { "org.freedesktop.DBus.Deprecated":
1375
"true" }
1180
"true" }
1376
1181
# Find an unused name
1377
1182
for aname in (iname.format(i)
1378
1183
for i in itertools.count()):
1382
1187
if interface_names:
1383
1188
# Replace the class with a new subclass of it with
1384
1189
# methods, signals, etc. as created above.
1385
cls = type(b"{}Alternate".format(cls.__name__),
1386
(cls, ), attr)
1190
cls = type(b"{0}Alternate".format(cls.__name__),
1191
(cls,), attr)
1387
1192
return cls
1388
1389
1193
return wrapper
1390
1194
1391
1195
1392
1196
@alternate_dbus_interfaces({"se.recompile.Mandos":
1393
"se.bsnet.fukt.Mandos"})
1197
"se.bsnet.fukt.Mandos"})
1394
1198
class ClientDBus(Client, DBusObjectWithProperties):
1395
1199
"""A Client class using D-Bus
1396
1200
1400
1204
"""
1401
1205
1402
1206
runtime_expansions = (Client.runtime_expansions
1403
+ ("dbus_object_path", ))
1404
1405
_interface = "se.recompile.Mandos.Client"
1207
+ ("dbus_object_path",))
1406
1208
1407
1209
# dbus.service.Object doesn't use super(), so we can't either.
1408
1210
1411
1213
Client.__init__(self, *args, **kwargs)
1412
1214
# Only now, when this client is initialized, can it show up on
1413
1215
# the D-Bus
1414
client_object_name = str(self.name).translate(
1216
client_object_name = unicode(self.name).translate(
1415
1217
{ord("."): ord("_"),
1416
1218
ord("-"): ord("_")})
1417
self.dbus_object_path = dbus.ObjectPath(
1418
"/clients/" + client_object_name)
1219
self.dbus_object_path = (dbus.ObjectPath
1220
("/clients/" + client_object_name))
1419
1221
DBusObjectWithProperties.__init__(self, self.bus,
1420
1222
self.dbus_object_path)
1421
1223
1422
def notifychangeproperty(transform_func, dbus_name,
1423
type_func=lambda x: x,
1424
variant_level=1,
1425
invalidate_only=False,
1426
_interface=_interface):
1224
def notifychangeproperty(transform_func,
1225
dbus_name, type_func=lambda x: x,
1226
variant_level=1):
1427
1227
""" Modify a variable so that it's a property which announces
1428
1228
its changes to DBus.
1429
1229
1434
1234
to the D-Bus. Default: no transform
1435
1235
variant_level: D-Bus variant level. Default: 1
1436
1236
"""
1437
attrname = "_{}".format(dbus_name)
1438
1237
attrname = "_{0}".format(dbus_name)
1439
1238
def setter(self, value):
1440
1239
if hasattr(self, "dbus_object_path"):
1441
1240
if (not hasattr(self, attrname) or
1442
1241
type_func(getattr(self, attrname, None))
1443
1242
!= type_func(value)):
1444
if invalidate_only:
1445
self.PropertiesChanged(
1446
_interface, dbus.Dictionary(),
1447
dbus.Array((dbus_name, )))
1448
else:
1449
dbus_value = transform_func(
1450
type_func(value),
1451
variant_level = variant_level)
1452
self.PropertyChanged(dbus.String(dbus_name),
1453
dbus_value)
1454
self.PropertiesChanged(
1455
_interface,
1456
dbus.Dictionary({ dbus.String(dbus_name):
1457
dbus_value }),
1458
dbus.Array())
1243
dbus_value = transform_func(type_func(value),
1244
variant_level
1245
=variant_level)
1246
self.PropertyChanged(dbus.String(dbus_name),
1247
dbus_value)
1459
1248
setattr(self, attrname, value)
1460
1249
1461
1250
return property(lambda self: getattr(self, attrname), setter)
1467
1256
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1468
1257
last_enabled = notifychangeproperty(datetime_to_dbus,
1469
1258
"LastEnabled")
1470
checker = notifychangeproperty(
1471
dbus.Boolean, "CheckerRunning",
1472
type_func = lambda checker: checker is not None)
1259
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1260
type_func = lambda checker:
1261
checker is not None)
1473
1262
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1474
1263
"LastCheckedOK")
1475
1264
last_checker_status = notifychangeproperty(dbus.Int16,
1478
1267
datetime_to_dbus, "LastApprovalRequest")
1479
1268
approved_by_default = notifychangeproperty(dbus.Boolean,
1480
1269
"ApprovedByDefault")
1481
approval_delay = notifychangeproperty(
1482
dbus.UInt64, "ApprovalDelay",
1483
type_func = lambda td: td.total_seconds() * 1000)
1270
approval_delay = notifychangeproperty(dbus.UInt64,
1271
"ApprovalDelay",
1272
type_func =
1273
timedelta_to_milliseconds)
1484
1274
approval_duration = notifychangeproperty(
1485
1275
dbus.UInt64, "ApprovalDuration",
1486
type_func = lambda td: td.total_seconds() * 1000)
1276
type_func = timedelta_to_milliseconds)
1487
1277
host = notifychangeproperty(dbus.String, "Host")
1488
timeout = notifychangeproperty(
1489
dbus.UInt64, "Timeout",
1490
type_func = lambda td: td.total_seconds() * 1000)
1278
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1279
type_func =
1280
timedelta_to_milliseconds)
1491
1281
extended_timeout = notifychangeproperty(
1492
1282
dbus.UInt64, "ExtendedTimeout",
1493
type_func = lambda td: td.total_seconds() * 1000)
1494
interval = notifychangeproperty(
1495
dbus.UInt64, "Interval",
1496
type_func = lambda td: td.total_seconds() * 1000)
1283
type_func = timedelta_to_milliseconds)
1284
interval = notifychangeproperty(dbus.UInt64,
1285
"Interval",
1286
type_func =
1287
timedelta_to_milliseconds)
1497
1288
checker_command = notifychangeproperty(dbus.String, "Checker")
1498
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1499
invalidate_only=True)
1500
1289
1501
1290
del notifychangeproperty
1502
1291
1509
1298
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1510
1299
Client.__del__(self, *args, **kwargs)
1511
1300
1512
def checker_callback(self, source, condition,
1513
connection, command, *args, **kwargs):
1514
ret = Client.checker_callback(self, source, condition,
1515
connection, command, *args,
1516
**kwargs)
1517
exitstatus = self.last_checker_status
1518
if exitstatus >= 0:
1301
def checker_callback(self, pid, condition, command,
1302
*args, **kwargs):
1303
self.checker_callback_tag = None
1304
self.checker = None
1305
if os.WIFEXITED(condition):
1306
exitstatus = os.WEXITSTATUS(condition)
1519
1307
# Emit D-Bus signal
1520
1308
self.CheckerCompleted(dbus.Int16(exitstatus),
1521
# This is specific to GNU libC
1522
dbus.Int64(exitstatus << 8),
1309
dbus.Int64(condition),
1523
1310
dbus.String(command))
1524
1311
else:
1525
1312
# Emit D-Bus signal
1526
1313
self.CheckerCompleted(dbus.Int16(-1),
1527
dbus.Int64(
1528
# This is specific to GNU libC
1529
(exitstatus << 8)
1530
| self.last_checker_signal),
1314
dbus.Int64(condition),
1531
1315
dbus.String(command))
1532
return ret
1316
1317
return Client.checker_callback(self, pid, condition, command,
1318
*args, **kwargs)
1533
1319
1534
1320
def start_checker(self, *args, **kwargs):
1535
old_checker_pid = getattr(self.checker, "pid", None)
1321
old_checker = self.checker
1322
if self.checker is not None:
1323
old_checker_pid = self.checker.pid
1324
else:
1325
old_checker_pid = None
1536
1326
r = Client.start_checker(self, *args, **kwargs)
1537
1327
# Only if new checker process was started
1538
1328
if (self.checker is not None
1547
1337
1548
1338
def approve(self, value=True):
1549
1339
self.approved = value
1550
gobject.timeout_add(int(self.approval_duration.total_seconds()
1551
* 1000), self._reset_approved)
1340
gobject.timeout_add(timedelta_to_milliseconds
1341
(self.approval_duration),
1342
self._reset_approved)
1552
1343
self.send_changedstate()
1553
1344
1554
1345
## D-Bus methods, signals & properties
1346
_interface = "se.recompile.Mandos.Client"
1555
1347
1556
1348
## Interfaces
1557
1349
1350
@dbus_interface_annotations(_interface)
1351
def _foo(self):
1352
return { "org.freedesktop.DBus.Property.EmitsChangedSignal":
1353
"false"}
1354
1558
1355
## Signals
1559
1356
1560
1357
# CheckerCompleted - signal
1570
1367
pass
1571
1368
1572
1369
# PropertyChanged - signal
1573
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1574
1370
@dbus.service.signal(_interface, signature="sv")
1575
1371
def PropertyChanged(self, property, value):
1576
1372
"D-Bus signal"
1610
1406
self.checked_ok()
1611
1407
1612
1408
# Enable - method
1613
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1614
1409
@dbus.service.method(_interface)
1615
1410
def Enable(self):
1616
1411
"D-Bus method"
1617
1412
self.enable()
1618
1413
1619
1414
# StartChecker - method
1620
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1621
1415
@dbus.service.method(_interface)
1622
1416
def StartChecker(self):
1623
1417
"D-Bus method"
1624
1418
self.start_checker()
1625
1419
1626
1420
# Disable - method
1627
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1628
1421
@dbus.service.method(_interface)
1629
1422
def Disable(self):
1630
1423
"D-Bus method"
1631
1424
self.disable()
1632
1425
1633
1426
# StopChecker - method
1634
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1635
1427
@dbus.service.method(_interface)
1636
1428
def StopChecker(self):
1637
1429
self.stop_checker()
1644
1436
return dbus.Boolean(bool(self.approvals_pending))
1645
1437
1646
1438
# ApprovedByDefault - property
1647
@dbus_service_property(_interface,
1648
signature="b",
1439
@dbus_service_property(_interface, signature="b",
1649
1440
access="readwrite")
1650
1441
def ApprovedByDefault_dbus_property(self, value=None):
1651
1442
if value is None: # get
1653
1444
self.approved_by_default = bool(value)
1654
1445
1655
1446
# ApprovalDelay - property
1656
@dbus_service_property(_interface,
1657
signature="t",
1447
@dbus_service_property(_interface, signature="t",
1658
1448
access="readwrite")
1659
1449
def ApprovalDelay_dbus_property(self, value=None):
1660
1450
if value is None: # get
1661
return dbus.UInt64(self.approval_delay.total_seconds()
1662
* 1000)
1451
return dbus.UInt64(self.approval_delay_milliseconds())
1663
1452
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1664
1453
1665
1454
# ApprovalDuration - property
1666
@dbus_service_property(_interface,
1667
signature="t",
1455
@dbus_service_property(_interface, signature="t",
1668
1456
access="readwrite")
1669
1457
def ApprovalDuration_dbus_property(self, value=None):
1670
1458
if value is None: # get
1671
return dbus.UInt64(self.approval_duration.total_seconds()
1672
* 1000)
1459
return dbus.UInt64(timedelta_to_milliseconds(
1460
self.approval_duration))
1673
1461
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1674
1462
1675
1463
# Name - property
1676
@dbus_annotations(
1677
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1678
1464
@dbus_service_property(_interface, signature="s", access="read")
1679
1465
def Name_dbus_property(self):
1680
1466
return dbus.String(self.name)
1681
1467
1682
1468
# Fingerprint - property
1683
@dbus_annotations(
1684
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1685
1469
@dbus_service_property(_interface, signature="s", access="read")
1686
1470
def Fingerprint_dbus_property(self):
1687
1471
return dbus.String(self.fingerprint)
1688
1472
1689
1473
# Host - property
1690
@dbus_service_property(_interface,
1691
signature="s",
1474
@dbus_service_property(_interface, signature="s",
1692
1475
access="readwrite")
1693
1476
def Host_dbus_property(self, value=None):
1694
1477
if value is None: # get
1695
1478
return dbus.String(self.host)
1696
self.host = str(value)
1479
self.host = unicode(value)
1697
1480
1698
1481
# Created - property
1699
@dbus_annotations(
1700
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1701
1482
@dbus_service_property(_interface, signature="s", access="read")
1702
1483
def Created_dbus_property(self):
1703
1484
return datetime_to_dbus(self.created)
1708
1489
return datetime_to_dbus(self.last_enabled)
1709
1490
1710
1491
# Enabled - property
1711
@dbus_service_property(_interface,
1712
signature="b",
1492
@dbus_service_property(_interface, signature="b",
1713
1493
access="readwrite")
1714
1494
def Enabled_dbus_property(self, value=None):
1715
1495
if value is None: # get
1720
1500
self.disable()
1721
1501
1722
1502
# LastCheckedOK - property
1723
@dbus_service_property(_interface,
1724
signature="s",
1503
@dbus_service_property(_interface, signature="s",
1725
1504
access="readwrite")
1726
1505
def LastCheckedOK_dbus_property(self, value=None):
1727
1506
if value is not None:
1730
1509
return datetime_to_dbus(self.last_checked_ok)
1731
1510
1732
1511
# LastCheckerStatus - property
1733
@dbus_service_property(_interface, signature="n", access="read")
1512
@dbus_service_property(_interface, signature="n",
1513
access="read")
1734
1514
def LastCheckerStatus_dbus_property(self):
1735
1515
return dbus.Int16(self.last_checker_status)
1736
1516
1745
1525
return datetime_to_dbus(self.last_approval_request)
1746
1526
1747
1527
# Timeout - property
1748
@dbus_service_property(_interface,
1749
signature="t",
1528
@dbus_service_property(_interface, signature="t",
1750
1529
access="readwrite")
1751
1530
def Timeout_dbus_property(self, value=None):
1752
1531
if value is None: # get
1753
return dbus.UInt64(self.timeout.total_seconds() * 1000)
1532
return dbus.UInt64(self.timeout_milliseconds())
1754
1533
old_timeout = self.timeout
1755
1534
self.timeout = datetime.timedelta(0, 0, 0, value)
1756
1535
# Reschedule disabling
1765
1544
is None):
1766
1545
return
1767
1546
gobject.source_remove(self.disable_initiator_tag)
1768
self.disable_initiator_tag = gobject.timeout_add(
1769
int((self.expires - now).total_seconds() * 1000),
1770
self.disable)
1547
self.disable_initiator_tag = (
1548
gobject.timeout_add(
1549
timedelta_to_milliseconds(self.expires - now),
1550
self.disable))
1771
1551
1772
1552
# ExtendedTimeout - property
1773
@dbus_service_property(_interface,
1774
signature="t",
1553
@dbus_service_property(_interface, signature="t",
1775
1554
access="readwrite")
1776
1555
def ExtendedTimeout_dbus_property(self, value=None):
1777
1556
if value is None: # get
1778
return dbus.UInt64(self.extended_timeout.total_seconds()
1779
* 1000)
1557
return dbus.UInt64(self.extended_timeout_milliseconds())
1780
1558
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1781
1559
1782
1560
# Interval - property
1783
@dbus_service_property(_interface,
1784
signature="t",
1561
@dbus_service_property(_interface, signature="t",
1785
1562
access="readwrite")
1786
1563
def Interval_dbus_property(self, value=None):
1787
1564
if value is None: # get
1788
return dbus.UInt64(self.interval.total_seconds() * 1000)
1565
return dbus.UInt64(self.interval_milliseconds())
1789
1566
self.interval = datetime.timedelta(0, 0, 0, value)
1790
1567
if getattr(self, "checker_initiator_tag", None) is None:
1791
1568
return
1792
1569
if self.enabled:
1793
1570
# Reschedule checker run
1794
1571
gobject.source_remove(self.checker_initiator_tag)
1795
self.checker_initiator_tag = gobject.timeout_add(
1796
value, self.start_checker)
1797
self.start_checker() # Start one now, too
1572
self.checker_initiator_tag = (gobject.timeout_add
1573
(value, self.start_checker))
1574
self.start_checker() # Start one now, too
1798
1575
1799
1576
# Checker - property
1800
@dbus_service_property(_interface,
1801
signature="s",
1577
@dbus_service_property(_interface, signature="s",
1802
1578
access="readwrite")
1803
1579
def Checker_dbus_property(self, value=None):
1804
1580
if value is None: # get
1805
1581
return dbus.String(self.checker_command)
1806
self.checker_command = str(value)
1582
self.checker_command = unicode(value)
1807
1583
1808
1584
# CheckerRunning - property
1809
@dbus_service_property(_interface,
1810
signature="b",
1585
@dbus_service_property(_interface, signature="b",
1811
1586
access="readwrite")
1812
1587
def CheckerRunning_dbus_property(self, value=None):
1813
1588
if value is None: # get
1818
1593
self.stop_checker()
1819
1594
1820
1595
# ObjectPath - property
1821
@dbus_annotations(
1822
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
1823
"org.freedesktop.DBus.Deprecated": "true"})
1824
1596
@dbus_service_property(_interface, signature="o", access="read")
1825
1597
def ObjectPath_dbus_property(self):
1826
1598
return self.dbus_object_path # is already a dbus.ObjectPath
1827
1599
1828
1600
# Secret = property
1829
@dbus_annotations(
1830
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
1831
"invalidates"})
1832
@dbus_service_property(_interface,
1833
signature="ay",
1834
access="write",
1835
byte_arrays=True)
1601
@dbus_service_property(_interface, signature="ay",
1602
access="write", byte_arrays=True)
1836
1603
def Secret_dbus_property(self, value):
1837
self.secret = bytes(value)
1604
self.secret = str(value)
1838
1605
1839
1606
del _interface
1840
1607
1844
1611
self._pipe = child_pipe
1845
1612
self._pipe.send(('init', fpr, address))
1846
1613
if not self._pipe.recv():
1847
raise KeyError(fpr)
1614
raise KeyError()
1848
1615
1849
1616
def __getattribute__(self, name):
1850
1617
if name == '_pipe':
1854
1621
if data[0] == 'data':
1855
1622
return data[1]
1856
1623
if data[0] == 'function':
1857
1858
1624
def func(*args, **kwargs):
1859
1625
self._pipe.send(('funcall', name, args, kwargs))
1860
1626
return self._pipe.recv()[1]
1861
1862
1627
return func
1863
1628
1864
1629
def __setattr__(self, name, value):
1876
1641
def handle(self):
1877
1642
with contextlib.closing(self.server.child_pipe) as child_pipe:
1878
1643
logger.info("TCP connection from: %s",
1879
str(self.client_address))
1644
unicode(self.client_address))
1880
1645
logger.debug("Pipe FD: %d",
1881
1646
self.server.child_pipe.fileno())
1882
1647
1883
session = gnutls.connection.ClientSession(
1884
self.request, gnutls.connection .X509Credentials())
1648
session = (gnutls.connection
1649
.ClientSession(self.request,
1650
gnutls.connection
1651
.X509Credentials()))
1885
1652
1886
1653
# Note: gnutls.connection.X509Credentials is really a
1887
1654
# generic GnuTLS certificate credentials object so long as
1896
1663
priority = self.server.gnutls_priority
1897
1664
if priority is None:
1898
1665
priority = "NORMAL"
1899
gnutls.library.functions.gnutls_priority_set_direct(
1900
session._c_object, priority, None)
1666
(gnutls.library.functions
1667
.gnutls_priority_set_direct(session._c_object,
1668
priority, None))
1901
1669
1902
1670
# Start communication using the Mandos protocol
1903
1671
# Get protocol number
1905
1673
logger.debug("Protocol version: %r", line)
1906
1674
try:
1907
1675
if int(line.strip().split()[0]) > 1:
1908
raise RuntimeError(line)
1676
raise RuntimeError
1909
1677
except (ValueError, IndexError, RuntimeError) as error:
1910
1678
logger.error("Unknown protocol version: %s", error)
1911
1679
return
1923
1691
approval_required = False
1924
1692
try:
1925
1693
try:
1926
fpr = self.fingerprint(
1927
self.peer_certificate(session))
1694
fpr = self.fingerprint(self.peer_certificate
1695
(session))
1928
1696
except (TypeError,
1929
1697
gnutls.errors.GNUTLSError) as error:
1930
1698
logger.warning("Bad certificate: %s", error)
1945
1713
while True:
1946
1714
if not client.enabled:
1947
1715
logger.info("Client %s is disabled",
1948
client.name)
1716
client.name)
1949
1717
if self.server.use_dbus:
1950
1718
# Emit D-Bus signal
1951
1719
client.Rejected("Disabled")
1960
1728
if self.server.use_dbus:
1961
1729
# Emit D-Bus signal
1962
1730
client.NeedApproval(
1963
client.approval_delay.total_seconds()
1964
* 1000, client.approved_by_default)
1731
client.approval_delay_milliseconds(),
1732
client.approved_by_default)
1965
1733
else:
1966
1734
logger.warning("Client %s was not approved",
1967
1735
client.name)
1973
1741
#wait until timeout or approved
1974
1742
time = datetime.datetime.now()
1975
1743
client.changedstate.acquire()
1976
client.changedstate.wait(delay.total_seconds())
1744
client.changedstate.wait(
1745
float(timedelta_to_milliseconds(delay)
1746
/ 1000))
1977
1747
client.changedstate.release()
1978
1748
time2 = datetime.datetime.now()
1979
1749
if (time2 - time) >= delay:
1998
1768
logger.warning("gnutls send failed",
1999
1769
exc_info=error)
2000
1770
return
2001
logger.debug("Sent: %d, remaining: %d", sent,
2002
len(client.secret) - (sent_size
2003
+ sent))
1771
logger.debug("Sent: %d, remaining: %d",
1772
sent, len(client.secret)
1773
- (sent_size + sent))
2004
1774
sent_size += sent
2005
1775
2006
1776
logger.info("Sending secret to %s", client.name)
2023
1793
def peer_certificate(session):
2024
1794
"Return the peer's OpenPGP certificate as a bytestring"
2025
1795
# If not an OpenPGP certificate...
2026
if (gnutls.library.functions.gnutls_certificate_type_get(
2027
session._c_object)
1796
if (gnutls.library.functions
1797
.gnutls_certificate_type_get(session._c_object)
2028
1798
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
2029
1799
# ...do the normal thing
2030
1800
return session.peer_certificate
2044
1814
def fingerprint(openpgp):
2045
1815
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2046
1816
# New GnuTLS "datum" with the OpenPGP public key
2047
datum = gnutls.library.types.gnutls_datum_t(
2048
ctypes.cast(ctypes.c_char_p(openpgp),
2049
ctypes.POINTER(ctypes.c_ubyte)),
2050
ctypes.c_uint(len(openpgp)))
1817
datum = (gnutls.library.types
1818
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1819
ctypes.POINTER
1820
(ctypes.c_ubyte)),
1821
ctypes.c_uint(len(openpgp))))
2051
1822
# New empty GnuTLS certificate
2052
1823
crt = gnutls.library.types.gnutls_openpgp_crt_t()
2053
gnutls.library.functions.gnutls_openpgp_crt_init(
2054
ctypes.byref(crt))
1824
(gnutls.library.functions
1825
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2055
1826
# Import the OpenPGP public key into the certificate
2056
gnutls.library.functions.gnutls_openpgp_crt_import(
2057
crt, ctypes.byref(datum),
2058
gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)
1827
(gnutls.library.functions
1828
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1829
gnutls.library.constants
1830
.GNUTLS_OPENPGP_FMT_RAW))
2059
1831
# Verify the self signature in the key
2060
1832
crtverify = ctypes.c_uint()
2061
gnutls.library.functions.gnutls_openpgp_crt_verify_self(
2062
crt, 0, ctypes.byref(crtverify))
1833
(gnutls.library.functions
1834
.gnutls_openpgp_crt_verify_self(crt, 0,
1835
ctypes.byref(crtverify)))
2063
1836
if crtverify.value != 0:
2064
1837
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2065
raise gnutls.errors.CertificateSecurityError(
2066
"Verify failed")
1838
raise (gnutls.errors.CertificateSecurityError
1839
("Verify failed"))
2067
1840
# New buffer for the fingerprint
2068
1841
buf = ctypes.create_string_buffer(20)
2069
1842
buf_len = ctypes.c_size_t()
2070
1843
# Get the fingerprint from the certificate into the buffer
2071
gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint(
2072
crt, ctypes.byref(buf), ctypes.byref(buf_len))
1844
(gnutls.library.functions
1845
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1846
ctypes.byref(buf_len)))
2073
1847
# Deinit the certificate
2074
1848
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2075
1849
# Convert the buffer to a Python bytestring
2081
1855
2082
1856
class MultiprocessingMixIn(object):
2083
1857
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2084
2085
1858
def sub_process_main(self, request, address):
2086
1859
try:
2087
1860
self.finish_request(request, address)
2099
1872
2100
1873
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2101
1874
""" adds a pipe to the MixIn """
2102
2103
1875
def process_request(self, request, client_address):
2104
1876
"""Overrides and wraps the original process_request().
2105
1877
2114
1886
2115
1887
def add_pipe(self, parent_pipe, proc):
2116
1888
"""Dummy function; override as necessary"""
2117
raise NotImplementedError()
1889
raise NotImplementedError
2118
1890
2119
1891
2120
1892
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2126
1898
interface: None or a network interface name (string)
2127
1899
use_ipv6: Boolean; to use IPv6 or not
2128
1900
"""
2129
2130
1901
def __init__(self, server_address, RequestHandlerClass,
2131
interface=None,
2132
use_ipv6=True,
2133
socketfd=None):
1902
interface=None, use_ipv6=True, socketfd=None):
2134
1903
"""If socketfd is set, use that file descriptor instead of
2135
1904
creating a new one with socket.socket().
2136
1905
"""
2177
1946
self.interface)
2178
1947
else:
2179
1948
try:
2180
self.socket.setsockopt(
2181
socket.SOL_SOCKET, SO_BINDTODEVICE,
2182
(self.interface + "\0").encode("utf-8"))
1949
self.socket.setsockopt(socket.SOL_SOCKET,
1950
SO_BINDTODEVICE,
1951
str(self.interface
1952
+ '\0'))
2183
1953
except socket.error as error:
2184
1954
if error.errno == errno.EPERM:
2185
logger.error("No permission to bind to"
2186
" interface %s", self.interface)
1955
logger.error("No permission to"
1956
" bind to interface %s",
1957
self.interface)
2187
1958
elif error.errno == errno.ENOPROTOOPT:
2188
1959
logger.error("SO_BINDTODEVICE not available;"
2189
1960
" cannot bind to interface %s",
2190
1961
self.interface)
2191
1962
elif error.errno == errno.ENODEV:
2192
logger.error("Interface %s does not exist,"
2193
" cannot bind", self.interface)
1963
logger.error("Interface %s does not"
1964
" exist, cannot bind",
1965
self.interface)
2194
1966
else:
2195
1967
raise
2196
1968
# Only bind(2) the socket if we really need to.
2199
1971
if self.address_family == socket.AF_INET6:
2200
1972
any_address = "::" # in6addr_any
2201
1973
else:
2202
any_address = "0.0.0.0" # INADDR_ANY
1974
any_address = socket.INADDR_ANY
2203
1975
self.server_address = (any_address,
2204
1976
self.server_address[1])
2205
1977
elif not self.server_address[1]:
2206
self.server_address = (self.server_address[0], 0)
1978
self.server_address = (self.server_address[0],
1979
0)
2207
1980
# if self.interface:
2208
1981
# self.server_address = (self.server_address[0],
2209
1982
# 0, # port
2223
1996
2224
1997
Assumes a gobject.MainLoop event loop.
2225
1998
"""
2226
2227
1999
def __init__(self, server_address, RequestHandlerClass,
2228
interface=None,
2229
use_ipv6=True,
2230
clients=None,
2231
gnutls_priority=None,
2232
use_dbus=True,
2233
socketfd=None):
2000
interface=None, use_ipv6=True, clients=None,
2001
gnutls_priority=None, use_dbus=True, socketfd=None):
2234
2002
self.enabled = False
2235
2003
self.clients = clients
2236
2004
if self.clients is None:
2242
2010
interface = interface,
2243
2011
use_ipv6 = use_ipv6,
2244
2012
socketfd = socketfd)
2245
2246
2013
def server_activate(self):
2247
2014
if self.enabled:
2248
2015
return socketserver.TCPServer.server_activate(self)
2252
2019
2253
2020
def add_pipe(self, parent_pipe, proc):
2254
2021
# Call "handle_ipc" for both data and EOF events
2255
gobject.io_add_watch(
2256
parent_pipe.fileno(),
2257
gobject.IO_IN | gobject.IO_HUP,
2258
functools.partial(self.handle_ipc,
2259
parent_pipe = parent_pipe,
2260
proc = proc))
2022
gobject.io_add_watch(parent_pipe.fileno(),
2023
gobject.IO_IN | gobject.IO_HUP,
2024
functools.partial(self.handle_ipc,
2025
parent_pipe =
2026
parent_pipe,
2027
proc = proc))
2261
2028
2262
def handle_ipc(self, source, condition,
2263
parent_pipe=None,
2264
proc = None,
2265
client_object=None):
2029
def handle_ipc(self, source, condition, parent_pipe=None,
2030
proc = None, client_object=None):
2266
2031
# error, or the other end of multiprocessing.Pipe has closed
2267
2032
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2268
2033
# Wait for other process to exit
2291
2056
parent_pipe.send(False)
2292
2057
return False
2293
2058
2294
gobject.io_add_watch(
2295
parent_pipe.fileno(),
2296
gobject.IO_IN | gobject.IO_HUP,
2297
functools.partial(self.handle_ipc,
2298
parent_pipe = parent_pipe,
2299
proc = proc,
2300
client_object = client))
2059
gobject.io_add_watch(parent_pipe.fileno(),
2060
gobject.IO_IN | gobject.IO_HUP,
2061
functools.partial(self.handle_ipc,
2062
parent_pipe =
2063
parent_pipe,
2064
proc = proc,
2065
client_object =
2066
client))
2301
2067
parent_pipe.send(True)
2302
2068
# remove the old hook in favor of the new above hook on
2303
2069
# same fileno
2309
2075
2310
2076
parent_pipe.send(('data', getattr(client_object,
2311
2077
funcname)(*args,
2312
**kwargs)))
2078
**kwargs)))
2313
2079
2314
2080
if command == 'getattr':
2315
2081
attrname = request[1]
2316
if isinstance(client_object.__getattribute__(attrname),
2317
collections.Callable):
2318
parent_pipe.send(('function', ))
2082
if callable(client_object.__getattribute__(attrname)):
2083
parent_pipe.send(('function',))
2319
2084
else:
2320
parent_pipe.send((
2321
'data', client_object.__getattribute__(attrname)))
2085
parent_pipe.send(('data', client_object
2086
.__getattribute__(attrname)))
2322
2087
2323
2088
if command == 'setattr':
2324
2089
attrname = request[1]
2328
2093
return True
2329
2094
2330
2095
2331
def rfc3339_duration_to_delta(duration):
2332
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2333
2334
>>> rfc3339_duration_to_delta("P7D")
2335
datetime.timedelta(7)
2336
>>> rfc3339_duration_to_delta("PT60S")
2337
datetime.timedelta(0, 60)
2338
>>> rfc3339_duration_to_delta("PT60M")
2339
datetime.timedelta(0, 3600)
2340
>>> rfc3339_duration_to_delta("PT24H")
2341
datetime.timedelta(1)
2342
>>> rfc3339_duration_to_delta("P1W")
2343
datetime.timedelta(7)
2344
>>> rfc3339_duration_to_delta("PT5M30S")
2345
datetime.timedelta(0, 330)
2346
>>> rfc3339_duration_to_delta("P1DT3M20S")
2347
datetime.timedelta(1, 200)
2348
"""
2349
2350
# Parsing an RFC 3339 duration with regular expressions is not
2351
# possible - there would have to be multiple places for the same
2352
# values, like seconds. The current code, while more esoteric, is
2353
# cleaner without depending on a parsing library. If Python had a
2354
# built-in library for parsing we would use it, but we'd like to
2355
# avoid excessive use of external libraries.
2356
2357
# New type for defining tokens, syntax, and semantics all-in-one
2358
Token = collections.namedtuple("Token", (
2359
"regexp", # To match token; if "value" is not None, must have
2360
# a "group" containing digits
2361
"value", # datetime.timedelta or None
2362
"followers")) # Tokens valid after this token
2363
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2364
# the "duration" ABNF definition in RFC 3339, Appendix A.
2365
token_end = Token(re.compile(r"$"), None, frozenset())
2366
token_second = Token(re.compile(r"(\d+)S"),
2367
datetime.timedelta(seconds=1),
2368
frozenset((token_end, )))
2369
token_minute = Token(re.compile(r"(\d+)M"),
2370
datetime.timedelta(minutes=1),
2371
frozenset((token_second, token_end)))
2372
token_hour = Token(re.compile(r"(\d+)H"),
2373
datetime.timedelta(hours=1),
2374
frozenset((token_minute, token_end)))
2375
token_time = Token(re.compile(r"T"),
2376
None,
2377
frozenset((token_hour, token_minute,
2378
token_second)))
2379
token_day = Token(re.compile(r"(\d+)D"),
2380
datetime.timedelta(days=1),
2381
frozenset((token_time, token_end)))
2382
token_month = Token(re.compile(r"(\d+)M"),
2383
datetime.timedelta(weeks=4),
2384
frozenset((token_day, token_end)))
2385
token_year = Token(re.compile(r"(\d+)Y"),
2386
datetime.timedelta(weeks=52),
2387
frozenset((token_month, token_end)))
2388
token_week = Token(re.compile(r"(\d+)W"),
2389
datetime.timedelta(weeks=1),
2390
frozenset((token_end, )))
2391
token_duration = Token(re.compile(r"P"), None,
2392
frozenset((token_year, token_month,
2393
token_day, token_time,
2394
token_week)))
2395
# Define starting values
2396
value = datetime.timedelta() # Value so far
2397
found_token = None
2398
followers = frozenset((token_duration, )) # Following valid tokens
2399
s = duration # String left to parse
2400
# Loop until end token is found
2401
while found_token is not token_end:
2402
# Search for any currently valid tokens
2403
for token in followers:
2404
match = token.regexp.match(s)
2405
if match is not None:
2406
# Token found
2407
if token.value is not None:
2408
# Value found, parse digits
2409
factor = int(match.group(1), 10)
2410
# Add to value so far
2411
value += factor * token.value
2412
# Strip token from string
2413
s = token.regexp.sub("", s, 1)
2414
# Go to found token
2415
found_token = token
2416
# Set valid next tokens
2417
followers = found_token.followers
2418
break
2419
else:
2420
# No currently valid tokens were found
2421
raise ValueError("Invalid RFC 3339 duration: {!r}"
2422
.format(duration))
2423
# End token found
2424
return value
2425
2426
2427
2096
def string_to_delta(interval):
2428
2097
"""Parse a string and return a datetime.timedelta
2429
2098
2440
2109
>>> string_to_delta('5m 30s')
2441
2110
datetime.timedelta(0, 330)
2442
2111
"""
2443
2444
try:
2445
return rfc3339_duration_to_delta(interval)
2446
except ValueError:
2447
pass
2448
2449
2112
timevalue = datetime.timedelta(0)
2450
2113
for s in interval.split():
2451
2114
try:
2452
suffix = s[-1]
2115
suffix = unicode(s[-1])
2453
2116
value = int(s[:-1])
2454
2117
if suffix == "d":
2455
2118
delta = datetime.timedelta(value)
2462
2125
elif suffix == "w":
2463
2126
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2464
2127
else:
2465
raise ValueError("Unknown suffix {!r}".format(suffix))
2466
except IndexError as e:
2128
raise ValueError("Unknown suffix {0!r}"
2129
.format(suffix))
2130
except (ValueError, IndexError) as e:
2467
2131
raise ValueError(*(e.args))
2468
2132
timevalue += delta
2469
2133
return timevalue
2485
2149
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2486
2150
if not stat.S_ISCHR(os.fstat(null).st_mode):
2487
2151
raise OSError(errno.ENODEV,
2488
"{} not a character device"
2152
"{0} not a character device"
2489
2153
.format(os.devnull))
2490
2154
os.dup2(null, sys.stdin.fileno())
2491
2155
os.dup2(null, sys.stdout.fileno())
2501
2165
2502
2166
parser = argparse.ArgumentParser()
2503
2167
parser.add_argument("-v", "--version", action="version",
2504
version = "%(prog)s {}".format(version),
2168
version = "%(prog)s {0}".format(version),
2505
2169
help="show version number and exit")
2506
2170
parser.add_argument("-i", "--interface", metavar="IF",
2507
2171
help="Bind to interface IF")
2513
2177
help="Run self-test")
2514
2178
parser.add_argument("--debug", action="store_true",
2515
2179
help="Debug mode; run in foreground and log"
2516
" to terminal", default=None)
2180
" to terminal")
2517
2181
parser.add_argument("--debuglevel", metavar="LEVEL",
2518
2182
help="Debug level for stdout output")
2519
2183
parser.add_argument("--priority", help="GnuTLS"
2526
2190
" files")
2527
2191
parser.add_argument("--no-dbus", action="store_false",
2528
2192
dest="use_dbus", help="Do not provide D-Bus"
2529
" system bus interface", default=None)
2193
" system bus interface")
2530
2194
parser.add_argument("--no-ipv6", action="store_false",
2531
dest="use_ipv6", help="Do not use IPv6",
2532
default=None)
2195
dest="use_ipv6", help="Do not use IPv6")
2533
2196
parser.add_argument("--no-restore", action="store_false",
2534
2197
dest="restore", help="Do not restore stored"
2535
" state", default=None)
2198
" state")
2536
2199
parser.add_argument("--socket", type=int,
2537
2200
help="Specify a file descriptor to a network"
2538
2201
" socket to use instead of creating one")
2539
2202
parser.add_argument("--statedir", metavar="DIR",
2540
2203
help="Directory to save/restore state in")
2541
parser.add_argument("--foreground", action="store_true",
2542
help="Run in foreground", default=None)
2543
parser.add_argument("--no-zeroconf", action="store_false",
2544
dest="zeroconf", help="Do not use Zeroconf",
2545
default=None)
2546
2204
2547
2205
options = parser.parse_args()
2548
2206
2549
2207
if options.check:
2550
2208
import doctest
2551
fail_count, test_count = doctest.testmod()
2552
sys.exit(os.EX_OK if fail_count == 0 else 1)
2209
doctest.testmod()
2210
sys.exit()
2553
2211
2554
2212
# Default values for config file for server-global settings
2555
2213
server_defaults = { "interface": "",
2557
2215
"port": "",
2558
2216
"debug": "False",
2559
2217
"priority":
2560
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2561
":+SIGN-DSA-SHA256",
2218
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2562
2219
"servicename": "Mandos",
2563
2220
"use_dbus": "True",
2564
2221
"use_ipv6": "True",
2565
2222
"debuglevel": "",
2566
2223
"restore": "True",
2567
2224
"socket": "",
2568
"statedir": "/var/lib/mandos",
2569
"foreground": "False",
2570
"zeroconf": "True",
2571
}
2225
"statedir": "/var/lib/mandos"
2226
}
2572
2227
2573
2228
# Parse config file for server-global settings
2574
2229
server_config = configparser.SafeConfigParser(server_defaults)
2575
2230
del server_defaults
2576
server_config.read(os.path.join(options.configdir, "mandos.conf"))
2231
server_config.read(os.path.join(options.configdir,
2232
"mandos.conf"))
2577
2233
# Convert the SafeConfigParser object to a dict
2578
2234
server_settings = server_config.defaults()
2579
2235
# Use the appropriate methods on the non-string config options
2580
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
2236
for option in ("debug", "use_dbus", "use_ipv6"):
2581
2237
server_settings[option] = server_config.getboolean("DEFAULT",
2582
2238
option)
2583
2239
if server_settings["port"]:
2597
2253
# Override the settings from the config file with command line
2598
2254
# options, if set.
2599
2255
for option in ("interface", "address", "port", "debug",
2600
"priority", "servicename", "configdir", "use_dbus",
2601
"use_ipv6", "debuglevel", "restore", "statedir",
2602
"socket", "foreground", "zeroconf"):
2256
"priority", "servicename", "configdir",
2257
"use_dbus", "use_ipv6", "debuglevel", "restore",
2258
"statedir", "socket"):
2603
2259
value = getattr(options, option)
2604
2260
if value is not None:
2605
2261
server_settings[option] = value
2606
2262
del options
2607
2263
# Force all strings to be unicode
2608
2264
for option in server_settings.keys():
2609
if isinstance(server_settings[option], bytes):
2610
server_settings[option] = (server_settings[option]
2611
.decode("utf-8"))
2612
# Force all boolean options to be boolean
2613
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2614
"foreground", "zeroconf"):
2615
server_settings[option] = bool(server_settings[option])
2616
# Debug implies foreground
2617
if server_settings["debug"]:
2618
server_settings["foreground"] = True
2265
if type(server_settings[option]) is str:
2266
server_settings[option] = unicode(server_settings[option])
2619
2267
# Now we have our good server settings in "server_settings"
2620
2268
2621
2269
##################################################################
2622
2270
2623
if (not server_settings["zeroconf"]
2624
and not (server_settings["port"]
2625
or server_settings["socket"] != "")):
2626
parser.error("Needs port or socket to work without Zeroconf")
2627
2628
2271
# For convenience
2629
2272
debug = server_settings["debug"]
2630
2273
debuglevel = server_settings["debuglevel"]
2632
2275
use_ipv6 = server_settings["use_ipv6"]
2633
2276
stored_state_path = os.path.join(server_settings["statedir"],
2634
2277
stored_state_file)
2635
foreground = server_settings["foreground"]
2636
zeroconf = server_settings["zeroconf"]
2637
2278
2638
2279
if debug:
2639
2280
initlogger(debug, logging.DEBUG)
2645
2286
initlogger(debug, level)
2646
2287
2647
2288
if server_settings["servicename"] != "Mandos":
2648
syslogger.setFormatter(
2649
logging.Formatter('Mandos ({}) [%(process)d]:'
2650
' %(levelname)s: %(message)s'.format(
2651
server_settings["servicename"])))
2289
syslogger.setFormatter(logging.Formatter
2290
('Mandos ({0}) [%(process)d]:'
2291
' %(levelname)s: %(message)s'
2292
.format(server_settings
2293
["servicename"])))
2652
2294
2653
2295
# Parse config file with clients
2654
2296
client_config = configparser.SafeConfigParser(Client
2659
2301
global mandos_dbus_service
2660
2302
mandos_dbus_service = None
2661
2303
2662
socketfd = None
2663
if server_settings["socket"] != "":
2664
socketfd = server_settings["socket"]
2665
tcp_server = MandosServer(
2666
(server_settings["address"], server_settings["port"]),
2667
ClientHandler,
2668
interface=(server_settings["interface"] or None),
2669
use_ipv6=use_ipv6,
2670
gnutls_priority=server_settings["priority"],
2671
use_dbus=use_dbus,
2672
socketfd=socketfd)
2673
if not foreground:
2674
pidfilename = "/run/mandos.pid"
2675
if not os.path.isdir("/run/."):
2676
pidfilename = "/var/run/mandos.pid"
2677
pidfile = None
2304
tcp_server = MandosServer((server_settings["address"],
2305
server_settings["port"]),
2306
ClientHandler,
2307
interface=(server_settings["interface"]
2308
or None),
2309
use_ipv6=use_ipv6,
2310
gnutls_priority=
2311
server_settings["priority"],
2312
use_dbus=use_dbus,
2313
socketfd=(server_settings["socket"]
2314
or None))
2315
if not debug:
2316
pidfilename = "/var/run/mandos.pid"
2678
2317
try:
2679
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2318
pidfile = open(pidfilename, "w")
2680
2319
except IOError as e:
2681
2320
logger.error("Could not open file %r", pidfilename,
2682
2321
exc_info=e)
2696
2335
os.setuid(uid)
2697
2336
except OSError as error:
2698
2337
if error.errno != errno.EPERM:
2699
raise
2338
raise error
2700
2339
2701
2340
if debug:
2702
2341
# Enable all possible GnuTLS debugging
2709
2348
def debug_gnutls(level, string):
2710
2349
logger.debug("GnuTLS: %s", string[:-1])
2711
2350
2712
gnutls.library.functions.gnutls_global_set_log_function(
2713
debug_gnutls)
2351
(gnutls.library.functions
2352
.gnutls_global_set_log_function(debug_gnutls))
2714
2353
2715
2354
# Redirect stdin so all checkers get /dev/null
2716
2355
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2719
2358
os.close(null)
2720
2359
2721
2360
# Need to fork before connecting to D-Bus
2722
if not foreground:
2361
if not debug:
2723
2362
# Close all input and output, do double fork, etc.
2724
2363
daemon()
2725
2364
2736
2375
if use_dbus:
2737
2376
try:
2738
2377
bus_name = dbus.service.BusName("se.recompile.Mandos",
2739
bus,
2740
do_not_queue=True)
2741
old_bus_name = dbus.service.BusName(
2742
"se.bsnet.fukt.Mandos", bus,
2743
do_not_queue=True)
2744
except dbus.exceptions.DBusException as e:
2378
bus, do_not_queue=True)
2379
old_bus_name = (dbus.service.BusName
2380
("se.bsnet.fukt.Mandos", bus,
2381
do_not_queue=True))
2382
except dbus.exceptions.NameExistsException as e:
2745
2383
logger.error("Disabling D-Bus:", exc_info=e)
2746
2384
use_dbus = False
2747
2385
server_settings["use_dbus"] = False
2748
2386
tcp_server.use_dbus = False
2749
if zeroconf:
2750
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2751
service = AvahiServiceToSyslog(
2752
name = server_settings["servicename"],
2753
servicetype = "_mandos._tcp",
2754
protocol = protocol,
2755
bus = bus)
2756
if server_settings["interface"]:
2757
service.interface = if_nametoindex(
2758
server_settings["interface"].encode("utf-8"))
2387
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2388
service = AvahiServiceToSyslog(name =
2389
server_settings["servicename"],
2390
servicetype = "_mandos._tcp",
2391
protocol = protocol, bus = bus)
2392
if server_settings["interface"]:
2393
service.interface = (if_nametoindex
2394
(str(server_settings["interface"])))
2759
2395
2760
2396
global multiprocessing_manager
2761
2397
multiprocessing_manager = multiprocessing.Manager()
2768
2404
old_client_settings = {}
2769
2405
clients_data = {}
2770
2406
2771
# This is used to redirect stdout and stderr for checker processes
2772
global wnull
2773
wnull = open(os.devnull, "w") # A writable /dev/null
2774
# Only used if server is running in foreground but not in debug
2775
# mode
2776
if debug or not foreground:
2777
wnull.close()
2778
2779
2407
# Get client data and settings from last running state.
2780
2408
if server_settings["restore"]:
2781
2409
try:
2782
2410
with open(stored_state_path, "rb") as stored_state:
2783
clients_data, old_client_settings = pickle.load(
2784
stored_state)
2411
clients_data, old_client_settings = (pickle.load
2412
(stored_state))
2785
2413
os.remove(stored_state_path)
2786
2414
except IOError as e:
2787
2415
if e.errno == errno.ENOENT:
2788
logger.warning("Could not load persistent state:"
2789
" {}".format(os.strerror(e.errno)))
2416
logger.warning("Could not load persistent state: {0}"
2417
.format(os.strerror(e.errno)))
2790
2418
else:
2791
2419
logger.critical("Could not load persistent state:",
2792
2420
exc_info=e)
2793
2421
raise
2794
2422
except EOFError as e:
2795
2423
logger.warning("Could not load persistent state: "
2796
"EOFError:",
2797
exc_info=e)
2424
"EOFError:", exc_info=e)
2798
2425
2799
2426
with PGPEngine() as pgp:
2800
for client_name, client in clients_data.items():
2801
# Skip removed clients
2802
if client_name not in client_settings:
2803
continue
2804
2427
for client_name, client in clients_data.iteritems():
2805
2428
# Decide which value to use after restoring saved state.
2806
2429
# We have three different values: Old config file,
2807
2430
# new config file, and saved state.
2812
2435
# For each value in new config, check if it
2813
2436
# differs from the old config value (Except for
2814
2437
# the "secret" attribute)
2815
if (name != "secret"
2816
and (value !=
2817
old_client_settings[client_name][name])):
2438
if (name != "secret" and
2439
value != old_client_settings[client_name]
2440
[name]):
2818
2441
client[name] = value
2819
2442
except KeyError:
2820
2443
pass
2821
2444
2822
2445
# Clients who has passed its expire date can still be
2823
# enabled if its last checker was successful. A Client
2446
# enabled if its last checker was successful. Clients
2824
2447
# whose checker succeeded before we stored its state is
2825
2448
# assumed to have successfully run all checkers during
2826
2449
# downtime.
2828
2451
if datetime.datetime.utcnow() >= client["expires"]:
2829
2452
if not client["last_checked_ok"]:
2830
2453
logger.warning(
2831
"disabling client {} - Client never "
2832
"performed a successful checker".format(
2833
client_name))
2454
"disabling client {0} - Client never "
2455
"performed a successful checker"
2456
.format(client_name))
2834
2457
client["enabled"] = False
2835
2458
elif client["last_checker_status"] != 0:
2836
2459
logger.warning(
2837
"disabling client {} - Client last"
2838
" checker failed with error code"
2839
" {}".format(
2840
client_name,
2841
client["last_checker_status"]))
2460
"disabling client {0} - Client "
2461
"last checker failed with error code {1}"
2462
.format(client_name,
2463
client["last_checker_status"]))
2842
2464
client["enabled"] = False
2843
2465
else:
2844
client["expires"] = (
2845
datetime.datetime.utcnow()
2846
+ client["timeout"])
2466
client["expires"] = (datetime.datetime
2467
.utcnow()
2468
+ client["timeout"])
2847
2469
logger.debug("Last checker succeeded,"
2848
" keeping {} enabled".format(
2849
client_name))
2470
" keeping {0} enabled"
2471
.format(client_name))
2850
2472
try:
2851
client["secret"] = pgp.decrypt(
2852
client["encrypted_secret"],
2853
client_settings[client_name]["secret"])
2473
client["secret"] = (
2474
pgp.decrypt(client["encrypted_secret"],
2475
client_settings[client_name]
2476
["secret"]))
2854
2477
except PGPError:
2855
2478
# If decryption fails, we use secret from new settings
2856
logger.debug("Failed to decrypt {} old secret".format(
2857
client_name))
2858
client["secret"] = (client_settings[client_name]
2859
["secret"])
2479
logger.debug("Failed to decrypt {0} old secret"
2480
.format(client_name))
2481
client["secret"] = (
2482
client_settings[client_name]["secret"])
2860
2483
2861
2484
# Add/remove clients based on new changes made to config
2862
2485
for client_name in (set(old_client_settings)
2867
2490
clients_data[client_name] = client_settings[client_name]
2868
2491
2869
2492
# Create all client objects
2870
for client_name, client in clients_data.items():
2493
for client_name, client in clients_data.iteritems():
2871
2494
tcp_server.clients[client_name] = client_class(
2872
name = client_name,
2873
settings = client,
2874
server_settings = server_settings)
2495
name = client_name, settings = client)
2875
2496
2876
2497
if not tcp_server.clients:
2877
2498
logger.warning("No clients defined")
2878
2499
2879
if not foreground:
2880
if pidfile is not None:
2881
pid = os.getpid()
2882
try:
2883
with pidfile:
2884
print(pid, file=pidfile)
2885
except IOError:
2886
logger.error("Could not write to file %r with PID %d",
2887
pidfilename, pid)
2888
del pidfile
2500
if not debug:
2501
try:
2502
with pidfile:
2503
pid = os.getpid()
2504
pidfile.write(str(pid) + "\n".encode("utf-8"))
2505
del pidfile
2506
except IOError:
2507
logger.error("Could not write to file %r with PID %d",
2508
pidfilename, pid)
2509
except NameError:
2510
# "pidfile" was never created
2511
pass
2889
2512
del pidfilename
2890
2513
2891
2514
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2892
2515
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2893
2516
2894
2517
if use_dbus:
2895
2896
@alternate_dbus_interfaces(
2897
{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
2898
class MandosDBusService(DBusObjectWithObjectManager):
2518
@alternate_dbus_interfaces({"se.recompile.Mandos":
2519
"se.bsnet.fukt.Mandos"})
2520
class MandosDBusService(DBusObjectWithProperties):
2899
2521
"""A D-Bus proxy object"""
2900
2901
2522
def __init__(self):
2902
2523
dbus.service.Object.__init__(self, bus, "/")
2903
2904
2524
_interface = "se.recompile.Mandos"
2905
2525
2526
@dbus_interface_annotations(_interface)
2527
def _foo(self):
2528
return { "org.freedesktop.DBus.Property"
2529
".EmitsChangedSignal":
2530
"false"}
2531
2906
2532
@dbus.service.signal(_interface, signature="o")
2907
2533
def ClientAdded(self, objpath):
2908
2534
"D-Bus signal"
2913
2539
"D-Bus signal"
2914
2540
pass
2915
2541
2916
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
2917
"true"})
2918
2542
@dbus.service.signal(_interface, signature="os")
2919
2543
def ClientRemoved(self, objpath, name):
2920
2544
"D-Bus signal"
2921
2545
pass
2922
2546
2923
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
2924
"true"})
2925
2547
@dbus.service.method(_interface, out_signature="ao")
2926
2548
def GetAllClients(self):
2927
2549
"D-Bus method"
2928
return dbus.Array(c.dbus_object_path for c in
2550
return dbus.Array(c.dbus_object_path
2551
for c in
2929
2552
tcp_server.clients.itervalues())
2930
2553
2931
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
2932
"true"})
2933
2554
@dbus.service.method(_interface,
2934
2555
out_signature="a{oa{sv}}")
2935
2556
def GetAllClientsWithProperties(self):
2936
2557
"D-Bus method"
2937
2558
return dbus.Dictionary(
2938
{ c.dbus_object_path: c.GetAll(
2939
"se.recompile.Mandos.Client")
2940
for c in tcp_server.clients.itervalues() },
2559
((c.dbus_object_path, c.GetAll(""))
2560
for c in tcp_server.clients.itervalues()),
2941
2561
signature="oa{sv}")
2942
2562
2943
2563
@dbus.service.method(_interface, in_signature="o")
2947
2567
if c.dbus_object_path == object_path:
2948
2568
del tcp_server.clients[c.name]
2949
2569
c.remove_from_connection()
2950
# Don't signal the disabling
2570
# Don't signal anything except ClientRemoved
2951
2571
c.disable(quiet=True)
2952
# Emit D-Bus signal for removal
2953
self.client_removed_signal(c)
2572
# Emit D-Bus signal
2573
self.ClientRemoved(object_path, c.name)
2954
2574
return
2955
2575
raise KeyError(object_path)
2956
2576
2957
2577
del _interface
2958
2959
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
2960
out_signature = "a{oa{sa{sv}}}")
2961
def GetManagedObjects(self):
2962
"""D-Bus method"""
2963
return dbus.Dictionary(
2964
{ client.dbus_object_path:
2965
dbus.Dictionary(
2966
{ interface: client.GetAll(interface)
2967
for interface in
2968
client._get_all_interface_names()})
2969
for client in tcp_server.clients.values()})
2970
2971
def client_added_signal(self, client):
2972
"""Send the new standard signal and the old signal"""
2973
if use_dbus:
2974
# New standard signal
2975
self.InterfacesAdded(
2976
client.dbus_object_path,
2977
dbus.Dictionary(
2978
{ interface: client.GetAll(interface)
2979
for interface in
2980
client._get_all_interface_names()}))
2981
# Old signal
2982
self.ClientAdded(client.dbus_object_path)
2983
2984
def client_removed_signal(self, client):
2985
"""Send the new standard signal and the old signal"""
2986
if use_dbus:
2987
# New standard signal
2988
self.InterfacesRemoved(
2989
client.dbus_object_path,
2990
client._get_all_interface_names())
2991
# Old signal
2992
self.ClientRemoved(client.dbus_object_path,
2993
client.name)
2994
2578
2995
2579
mandos_dbus_service = MandosDBusService()
2996
2580
2997
2581
def cleanup():
2998
2582
"Cleanup function; run on exit"
2999
if zeroconf:
3000
service.cleanup()
2583
service.cleanup()
3001
2584
3002
2585
multiprocessing.active_children()
3003
wnull.close()
3004
2586
if not (tcp_server.clients or client_settings):
3005
2587
return
3006
2588
3017
2599
3018
2600
# A list of attributes that can not be pickled
3019
2601
# + secret.
3020
exclude = { "bus", "changedstate", "secret",
3021
"checker", "server_settings" }
3022
for name, typ in inspect.getmembers(dbus.service
3023
.Object):
2602
exclude = set(("bus", "changedstate", "secret",
2603
"checker"))
2604
for name, typ in (inspect.getmembers
2605
(dbus.service.Object)):
3024
2606
exclude.add(name)
3025
2607
3026
2608
client_dict["encrypted_secret"] = (client
3033
2615
del client_settings[client.name]["secret"]
3034
2616
3035
2617
try:
3036
with tempfile.NamedTemporaryFile(
3037
mode='wb',
3038
suffix=".pickle",
3039
prefix='clients-',
3040
dir=os.path.dirname(stored_state_path),
3041
delete=False) as stored_state:
2618
with (tempfile.NamedTemporaryFile
2619
(mode='wb', suffix=".pickle", prefix='clients-',
2620
dir=os.path.dirname(stored_state_path),
2621
delete=False)) as stored_state:
3042
2622
pickle.dump((clients, client_settings), stored_state)
3043
tempname = stored_state.name
2623
tempname=stored_state.name
3044
2624
os.rename(tempname, stored_state_path)
3045
2625
except (IOError, OSError) as e:
3046
2626
if not debug:
3049
2629
except NameError:
3050
2630
pass
3051
2631
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3052
logger.warning("Could not save persistent state: {}"
2632
logger.warning("Could not save persistent state: {0}"
3053
2633
.format(os.strerror(e.errno)))
3054
2634
else:
3055
2635
logger.warning("Could not save persistent state:",
3056
2636
exc_info=e)
3057
raise
2637
raise e
3058
2638
3059
2639
# Delete all clients, and settings from config
3060
2640
while tcp_server.clients:
3061
2641
name, client = tcp_server.clients.popitem()
3062
2642
if use_dbus:
3063
2643
client.remove_from_connection()
3064
# Don't signal the disabling
2644
# Don't signal anything except ClientRemoved
3065
2645
client.disable(quiet=True)
3066
# Emit D-Bus signal for removal
3067
mandos_dbus_service.client_removed_signal(client)
2646
if use_dbus:
2647
# Emit D-Bus signal
2648
mandos_dbus_service.ClientRemoved(client
2649
.dbus_object_path,
2650
client.name)
3068
2651
client_settings.clear()
3069
2652
3070
2653
atexit.register(cleanup)
3071
2654
3072
2655
for client in tcp_server.clients.itervalues():
3073
2656
if use_dbus:
3074
# Emit D-Bus signal for adding
3075
mandos_dbus_service.client_added_signal(client)
2657
# Emit D-Bus signal
2658
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3076
2659
# Need to initiate checking of clients
3077
2660
if client.enabled:
3078
2661
client.init_checker()
3081
2664
tcp_server.server_activate()
3082
2665
3083
2666
# Find out what port we got
3084
if zeroconf:
3085
service.port = tcp_server.socket.getsockname()[1]
2667
service.port = tcp_server.socket.getsockname()[1]
3086
2668
if use_ipv6:
3087
2669
logger.info("Now listening on address %r, port %d,"
3088
2670
" flowinfo %d, scope_id %d",
3094
2676
#service.interface = tcp_server.socket.getsockname()[3]
3095
2677
3096
2678
try:
3097
if zeroconf:
3098
# From the Avahi example code
3099
try:
3100
service.activate()
3101
except dbus.exceptions.DBusException as error:
3102
logger.critical("D-Bus Exception", exc_info=error)
3103
cleanup()
3104
sys.exit(1)
3105
# End of Avahi example code
2679
# From the Avahi example code
2680
try:
2681
service.activate()
2682
except dbus.exceptions.DBusException as error:
2683
logger.critical("D-Bus Exception", exc_info=error)
2684
cleanup()
2685
sys.exit(1)
2686
# End of Avahi example code
3106
2687
3107
2688
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
3108
2689
lambda *args, **kwargs:
3123
2704
# Must run before the D-Bus bus name gets deregistered
3124
2705
cleanup()
3125
2706
3126
3127
2707
if __name__ == '__main__':
3128
2708
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0