To get this branch, use:
bzr branch
http://bzr.recompile.se/loggerhead/mandos/release
« back to all changes in this revision
Viewing changes to mandos
- browse files at revision 302
- compare with another revision
- download diff
- download tarball
- view history from revision 302
- Committer: Teddy Hogeborn
- Date: 2012-06-17 22:26:40 UTC
- mfrom: (301.1.1 release)
- Revision ID: teddy@recompile.se-20120617222640-49scfn0husnrr5bi
Tags: version-1.6.0-1
* Makefile (version): Changed to "1.6.0".
* NEWS (Version 1.6.0): New entry.
* debian/changelog (1.6.0-1): - '' -
* NEWS (Version 1.6.0): New entry.
* debian/changelog (1.6.0-1): - '' -
- 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 = "1.6.9"
91
version = "1.6.0"
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
811
"""
846
847
812
def decorator(func):
848
813
func._dbus_annotations = annotations
849
814
return func
850
851
815
return decorator
852
816
853
817
854
818
class DBusPropertyException(dbus.exceptions.DBusException):
855
819
"""A base class for D-Bus property-related exceptions
856
820
"""
857
pass
821
def __unicode__(self):
822
return unicode(str(self))
858
823
859
824
860
825
class DBusPropertyAccessException(DBusPropertyException):
884
849
If called like _is_dbus_thing("method") it returns a function
885
850
suitable for use as predicate to inspect.getmembers().
886
851
"""
887
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
852
return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),
888
853
False)
889
854
890
855
def _get_all_dbus_things(self, thing):
891
856
"""Returns a generator of (name, attribute) pairs
892
857
"""
893
return ((getattr(athing.__get__(self), "_dbus_name", name),
858
return ((getattr(athing.__get__(self), "_dbus_name",
859
name),
894
860
athing.__get__(self))
895
861
for cls in self.__class__.__mro__
896
862
for name, athing in
897
inspect.getmembers(cls, self._is_dbus_thing(thing)))
863
inspect.getmembers(cls,
864
self._is_dbus_thing(thing)))
898
865
899
866
def _get_dbus_property(self, interface_name, property_name):
900
867
"""Returns a bound method if one exists which is a D-Bus
901
868
property with the specified name and interface.
902
869
"""
903
for cls in self.__class__.__mro__:
904
for name, value in inspect.getmembers(
905
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"))):
906
874
if (value._dbus_name == property_name
907
875
and value._dbus_interface == interface_name):
908
876
return value.__get__(self)
909
877
910
878
# No such property
911
raise DBusPropertyNotFound("{}:{}.{}".format(
912
self.dbus_object_path, interface_name, property_name))
879
raise DBusPropertyNotFound(self.dbus_object_path + ":"
880
+ interface_name + "."
881
+ property_name)
913
882
914
@dbus.service.method(dbus.PROPERTIES_IFACE,
915
in_signature="ss",
883
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
916
884
out_signature="v")
917
885
def Get(self, interface_name, property_name):
918
886
"""Standard D-Bus property Get() method, see D-Bus standard.
936
904
# The byte_arrays option is not supported yet on
937
905
# signatures other than "ay".
938
906
if prop._dbus_signature != "ay":
939
raise ValueError("Byte arrays not supported for non-"
940
"'ay' signature {!r}"
941
.format(prop._dbus_signature))
907
raise ValueError
942
908
value = dbus.ByteArray(b''.join(chr(byte)
943
909
for byte in value))
944
910
prop(value)
945
911
946
@dbus.service.method(dbus.PROPERTIES_IFACE,
947
in_signature="s",
912
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
948
913
out_signature="a{sv}")
949
914
def GetAll(self, interface_name):
950
915
"""Standard D-Bus property GetAll() method, see D-Bus
965
930
if not hasattr(value, "variant_level"):
966
931
properties[name] = value
967
932
continue
968
properties[name] = type(value)(
969
value, variant_level = value.variant_level + 1)
933
properties[name] = type(value)(value, variant_level=
934
value.variant_level+1)
970
935
return dbus.Dictionary(properties, signature="sv")
971
936
972
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
973
def PropertiesChanged(self, interface_name, changed_properties,
974
invalidated_properties):
975
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
976
standard.
977
"""
978
pass
979
980
937
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
981
938
out_signature="s",
982
939
path_keyword='object_path',
990
947
connection)
991
948
try:
992
949
document = xml.dom.minidom.parseString(xmlstring)
993
994
950
def make_tag(document, name, prop):
995
951
e = document.createElement("property")
996
952
e.setAttribute("name", name)
997
953
e.setAttribute("type", prop._dbus_signature)
998
954
e.setAttribute("access", prop._dbus_access)
999
955
return e
1000
1001
956
for if_tag in document.getElementsByTagName("interface"):
1002
957
# Add property tags
1003
958
for tag in (make_tag(document, name, prop)
1015
970
if (name == tag.getAttribute("name")
1016
971
and prop._dbus_interface
1017
972
== if_tag.getAttribute("name")):
1018
annots.update(getattr(
1019
prop, "_dbus_annotations", {}))
1020
for name, value in annots.items():
973
annots.update(getattr
974
(prop,
975
"_dbus_annotations",
976
{}))
977
for name, value in annots.iteritems():
1021
978
ann_tag = document.createElement(
1022
979
"annotation")
1023
980
ann_tag.setAttribute("name", name)
1026
983
# Add interface annotation tags
1027
984
for annotation, value in dict(
1028
985
itertools.chain.from_iterable(
1029
annotations().items()
1030
for name, annotations
1031
in self._get_all_dbus_things("interface")
986
annotations().iteritems()
987
for name, annotations in
988
self._get_all_dbus_things("interface")
1032
989
if name == if_tag.getAttribute("name")
1033
)).items():
990
)).iteritems():
1034
991
ann_tag = document.createElement("annotation")
1035
992
ann_tag.setAttribute("name", annotation)
1036
993
ann_tag.setAttribute("value", value)
1063
1020
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1064
1021
if dt is None:
1065
1022
return dbus.String("", variant_level = variant_level)
1066
return dbus.String(dt.isoformat(), variant_level=variant_level)
1023
return dbus.String(dt.isoformat(),
1024
variant_level=variant_level)
1067
1025
1068
1026
1069
1027
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1089
1047
(from DBusObjectWithProperties) and interfaces (from the
1090
1048
dbus_interface_annotations decorator).
1091
1049
"""
1092
1093
1050
def wrapper(cls):
1094
1051
for orig_interface_name, alt_interface_name in (
1095
alt_interface_names.items()):
1052
alt_interface_names.iteritems()):
1096
1053
attr = {}
1097
1054
interface_names = set()
1098
1055
# Go though all attributes of the class
1100
1057
# Ignore non-D-Bus attributes, and D-Bus attributes
1101
1058
# with the wrong interface name
1102
1059
if (not hasattr(attribute, "_dbus_interface")
1103
or not attribute._dbus_interface.startswith(
1104
orig_interface_name)):
1060
or not attribute._dbus_interface
1061
.startswith(orig_interface_name)):
1105
1062
continue
1106
1063
# Create an alternate D-Bus interface name based on
1107
1064
# the current name
1108
alt_interface = attribute._dbus_interface.replace(
1109
orig_interface_name, alt_interface_name)
1065
alt_interface = (attribute._dbus_interface
1066
.replace(orig_interface_name,
1067
alt_interface_name))
1110
1068
interface_names.add(alt_interface)
1111
1069
# Is this a D-Bus signal?
1112
1070
if getattr(attribute, "_dbus_is_signal", False):
1113
if sys.version_info.major == 2:
1114
# Extract the original non-method undecorated
1115
# function by black magic
1116
nonmethod_func = (dict(
1071
# Extract the original non-method function by
1072
# black magic
1073
nonmethod_func = (dict(
1117
1074
zip(attribute.func_code.co_freevars,
1118
attribute.__closure__))
1119
["func"].cell_contents)
1120
else:
1121
nonmethod_func = attribute
1075
attribute.__closure__))["func"]
1076
.cell_contents)
1122
1077
# Create a new, but exactly alike, function
1123
1078
# object, and decorate it to be a new D-Bus signal
1124
1079
# with the alternate D-Bus interface name
1125
if sys.version_info.major == 2:
1126
new_function = types.FunctionType(
1127
nonmethod_func.func_code,
1128
nonmethod_func.func_globals,
1129
nonmethod_func.func_name,
1130
nonmethod_func.func_defaults,
1131
nonmethod_func.func_closure)
1132
else:
1133
new_function = types.FunctionType(
1134
nonmethod_func.__code__,
1135
nonmethod_func.__globals__,
1136
nonmethod_func.__name__,
1137
nonmethod_func.__defaults__,
1138
nonmethod_func.__closure__)
1139
new_function = (dbus.service.signal(
1140
alt_interface,
1141
attribute._dbus_signature)(new_function))
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)))
1142
1089
# Copy annotations, if any
1143
1090
try:
1144
new_function._dbus_annotations = dict(
1145
attribute._dbus_annotations)
1091
new_function._dbus_annotations = (
1092
dict(attribute._dbus_annotations))
1146
1093
except AttributeError:
1147
1094
pass
1148
1095
# Define a creator of a function to call both the
1153
1100
"""This function is a scope container to pass
1154
1101
func1 and func2 to the "call_both" function
1155
1102
outside of its arguments"""
1156
1157
1103
def call_both(*args, **kwargs):
1158
1104
"""This function will emit two D-Bus
1159
1105
signals by calling func1 and func2"""
1160
1106
func1(*args, **kwargs)
1161
1107
func2(*args, **kwargs)
1162
1163
1108
return call_both
1164
1109
# Create the "call_both" function and add it to
1165
1110
# the class
1170
1115
# object. Decorate it to be a new D-Bus method
1171
1116
# with the alternate D-Bus interface name. Add it
1172
1117
# to the class.
1173
attr[attrname] = (
1174
dbus.service.method(
1175
alt_interface,
1176
attribute._dbus_in_signature,
1177
attribute._dbus_out_signature)
1178
(types.FunctionType(attribute.func_code,
1179
attribute.func_globals,
1180
attribute.func_name,
1181
attribute.func_defaults,
1182
attribute.func_closure)))
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)))
1183
1128
# Copy annotations, if any
1184
1129
try:
1185
attr[attrname]._dbus_annotations = dict(
1186
attribute._dbus_annotations)
1130
attr[attrname]._dbus_annotations = (
1131
dict(attribute._dbus_annotations))
1187
1132
except AttributeError:
1188
1133
pass
1189
1134
# Is this a D-Bus property?
1192
1137
# object, and decorate it to be a new D-Bus
1193
1138
# property with the alternate D-Bus interface
1194
1139
# name. Add it to the class.
1195
attr[attrname] = (dbus_service_property(
1196
alt_interface, attribute._dbus_signature,
1197
attribute._dbus_access,
1198
attribute._dbus_get_args_options
1199
["byte_arrays"])
1200
(types.FunctionType(
1201
attribute.func_code,
1202
attribute.func_globals,
1203
attribute.func_name,
1204
attribute.func_defaults,
1205
attribute.func_closure)))
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)))
1206
1153
# Copy annotations, if any
1207
1154
try:
1208
attr[attrname]._dbus_annotations = dict(
1209
attribute._dbus_annotations)
1155
attr[attrname]._dbus_annotations = (
1156
dict(attribute._dbus_annotations))
1210
1157
except AttributeError:
1211
1158
pass
1212
1159
# Is this a D-Bus interface?
1215
1162
# object. Decorate it to be a new D-Bus interface
1216
1163
# with the alternate D-Bus interface name. Add it
1217
1164
# to the class.
1218
attr[attrname] = (
1219
dbus_interface_annotations(alt_interface)
1220
(types.FunctionType(attribute.func_code,
1221
attribute.func_globals,
1222
attribute.func_name,
1223
attribute.func_defaults,
1224
attribute.func_closure)))
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)))
1225
1173
if deprecate:
1226
1174
# Deprecate all alternate interfaces
1227
iname="_AlternateDBusNames_interface_annotation{}"
1175
iname="_AlternateDBusNames_interface_annotation{0}"
1228
1176
for interface_name in interface_names:
1229
1230
1177
@dbus_interface_annotations(interface_name)
1231
1178
def func(self):
1232
1179
return { "org.freedesktop.DBus.Deprecated":
1233
"true" }
1180
"true" }
1234
1181
# Find an unused name
1235
1182
for aname in (iname.format(i)
1236
1183
for i in itertools.count()):
1240
1187
if interface_names:
1241
1188
# Replace the class with a new subclass of it with
1242
1189
# methods, signals, etc. as created above.
1243
cls = type(b"{}Alternate".format(cls.__name__),
1244
(cls, ), attr)
1190
cls = type(b"{0}Alternate".format(cls.__name__),
1191
(cls,), attr)
1245
1192
return cls
1246
1247
1193
return wrapper
1248
1194
1249
1195
1250
1196
@alternate_dbus_interfaces({"se.recompile.Mandos":
1251
"se.bsnet.fukt.Mandos"})
1197
"se.bsnet.fukt.Mandos"})
1252
1198
class ClientDBus(Client, DBusObjectWithProperties):
1253
1199
"""A Client class using D-Bus
1254
1200
1258
1204
"""
1259
1205
1260
1206
runtime_expansions = (Client.runtime_expansions
1261
+ ("dbus_object_path", ))
1262
1263
_interface = "se.recompile.Mandos.Client"
1207
+ ("dbus_object_path",))
1264
1208
1265
1209
# dbus.service.Object doesn't use super(), so we can't either.
1266
1210
1269
1213
Client.__init__(self, *args, **kwargs)
1270
1214
# Only now, when this client is initialized, can it show up on
1271
1215
# the D-Bus
1272
client_object_name = str(self.name).translate(
1216
client_object_name = unicode(self.name).translate(
1273
1217
{ord("."): ord("_"),
1274
1218
ord("-"): ord("_")})
1275
self.dbus_object_path = dbus.ObjectPath(
1276
"/clients/" + client_object_name)
1219
self.dbus_object_path = (dbus.ObjectPath
1220
("/clients/" + client_object_name))
1277
1221
DBusObjectWithProperties.__init__(self, self.bus,
1278
1222
self.dbus_object_path)
1279
1223
1280
def notifychangeproperty(transform_func, dbus_name,
1281
type_func=lambda x: x,
1282
variant_level=1,
1283
invalidate_only=False,
1284
_interface=_interface):
1224
def notifychangeproperty(transform_func,
1225
dbus_name, type_func=lambda x: x,
1226
variant_level=1):
1285
1227
""" Modify a variable so that it's a property which announces
1286
1228
its changes to DBus.
1287
1229
1292
1234
to the D-Bus. Default: no transform
1293
1235
variant_level: D-Bus variant level. Default: 1
1294
1236
"""
1295
attrname = "_{}".format(dbus_name)
1296
1237
attrname = "_{0}".format(dbus_name)
1297
1238
def setter(self, value):
1298
1239
if hasattr(self, "dbus_object_path"):
1299
1240
if (not hasattr(self, attrname) or
1300
1241
type_func(getattr(self, attrname, None))
1301
1242
!= type_func(value)):
1302
if invalidate_only:
1303
self.PropertiesChanged(
1304
_interface, dbus.Dictionary(),
1305
dbus.Array((dbus_name, )))
1306
else:
1307
dbus_value = transform_func(
1308
type_func(value),
1309
variant_level = variant_level)
1310
self.PropertyChanged(dbus.String(dbus_name),
1311
dbus_value)
1312
self.PropertiesChanged(
1313
_interface,
1314
dbus.Dictionary({ dbus.String(dbus_name):
1315
dbus_value }),
1316
dbus.Array())
1243
dbus_value = transform_func(type_func(value),
1244
variant_level
1245
=variant_level)
1246
self.PropertyChanged(dbus.String(dbus_name),
1247
dbus_value)
1317
1248
setattr(self, attrname, value)
1318
1249
1319
1250
return property(lambda self: getattr(self, attrname), setter)
1325
1256
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1326
1257
last_enabled = notifychangeproperty(datetime_to_dbus,
1327
1258
"LastEnabled")
1328
checker = notifychangeproperty(
1329
dbus.Boolean, "CheckerRunning",
1330
type_func = lambda checker: checker is not None)
1259
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1260
type_func = lambda checker:
1261
checker is not None)
1331
1262
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1332
1263
"LastCheckedOK")
1333
1264
last_checker_status = notifychangeproperty(dbus.Int16,
1336
1267
datetime_to_dbus, "LastApprovalRequest")
1337
1268
approved_by_default = notifychangeproperty(dbus.Boolean,
1338
1269
"ApprovedByDefault")
1339
approval_delay = notifychangeproperty(
1340
dbus.UInt64, "ApprovalDelay",
1341
type_func = lambda td: td.total_seconds() * 1000)
1270
approval_delay = notifychangeproperty(dbus.UInt64,
1271
"ApprovalDelay",
1272
type_func =
1273
timedelta_to_milliseconds)
1342
1274
approval_duration = notifychangeproperty(
1343
1275
dbus.UInt64, "ApprovalDuration",
1344
type_func = lambda td: td.total_seconds() * 1000)
1276
type_func = timedelta_to_milliseconds)
1345
1277
host = notifychangeproperty(dbus.String, "Host")
1346
timeout = notifychangeproperty(
1347
dbus.UInt64, "Timeout",
1348
type_func = lambda td: td.total_seconds() * 1000)
1278
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1279
type_func =
1280
timedelta_to_milliseconds)
1349
1281
extended_timeout = notifychangeproperty(
1350
1282
dbus.UInt64, "ExtendedTimeout",
1351
type_func = lambda td: td.total_seconds() * 1000)
1352
interval = notifychangeproperty(
1353
dbus.UInt64, "Interval",
1354
type_func = lambda td: td.total_seconds() * 1000)
1283
type_func = timedelta_to_milliseconds)
1284
interval = notifychangeproperty(dbus.UInt64,
1285
"Interval",
1286
type_func =
1287
timedelta_to_milliseconds)
1355
1288
checker_command = notifychangeproperty(dbus.String, "Checker")
1356
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1357
invalidate_only=True)
1358
1289
1359
1290
del notifychangeproperty
1360
1291
1367
1298
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1368
1299
Client.__del__(self, *args, **kwargs)
1369
1300
1370
def checker_callback(self, source, condition,
1371
connection, command, *args, **kwargs):
1372
ret = Client.checker_callback(self, source, condition,
1373
connection, command, *args,
1374
**kwargs)
1375
exitstatus = self.last_checker_status
1376
if exitstatus >= 0:
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)
1377
1307
# Emit D-Bus signal
1378
1308
self.CheckerCompleted(dbus.Int16(exitstatus),
1379
dbus.Int64(0),
1309
dbus.Int64(condition),
1380
1310
dbus.String(command))
1381
1311
else:
1382
1312
# Emit D-Bus signal
1383
1313
self.CheckerCompleted(dbus.Int16(-1),
1384
dbus.Int64(
1385
self.last_checker_signal),
1314
dbus.Int64(condition),
1386
1315
dbus.String(command))
1387
return ret
1316
1317
return Client.checker_callback(self, pid, condition, command,
1318
*args, **kwargs)
1388
1319
1389
1320
def start_checker(self, *args, **kwargs):
1390
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
1391
1326
r = Client.start_checker(self, *args, **kwargs)
1392
1327
# Only if new checker process was started
1393
1328
if (self.checker is not None
1402
1337
1403
1338
def approve(self, value=True):
1404
1339
self.approved = value
1405
gobject.timeout_add(int(self.approval_duration.total_seconds()
1406
* 1000), self._reset_approved)
1340
gobject.timeout_add(timedelta_to_milliseconds
1341
(self.approval_duration),
1342
self._reset_approved)
1407
1343
self.send_changedstate()
1408
1344
1409
1345
## D-Bus methods, signals & properties
1346
_interface = "se.recompile.Mandos.Client"
1410
1347
1411
1348
## Interfaces
1412
1349
1350
@dbus_interface_annotations(_interface)
1351
def _foo(self):
1352
return { "org.freedesktop.DBus.Property.EmitsChangedSignal":
1353
"false"}
1354
1413
1355
## Signals
1414
1356
1415
1357
# CheckerCompleted - signal
1425
1367
pass
1426
1368
1427
1369
# PropertyChanged - signal
1428
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1429
1370
@dbus.service.signal(_interface, signature="sv")
1430
1371
def PropertyChanged(self, property, value):
1431
1372
"D-Bus signal"
1495
1436
return dbus.Boolean(bool(self.approvals_pending))
1496
1437
1497
1438
# ApprovedByDefault - property
1498
@dbus_service_property(_interface,
1499
signature="b",
1439
@dbus_service_property(_interface, signature="b",
1500
1440
access="readwrite")
1501
1441
def ApprovedByDefault_dbus_property(self, value=None):
1502
1442
if value is None: # get
1504
1444
self.approved_by_default = bool(value)
1505
1445
1506
1446
# ApprovalDelay - property
1507
@dbus_service_property(_interface,
1508
signature="t",
1447
@dbus_service_property(_interface, signature="t",
1509
1448
access="readwrite")
1510
1449
def ApprovalDelay_dbus_property(self, value=None):
1511
1450
if value is None: # get
1512
return dbus.UInt64(self.approval_delay.total_seconds()
1513
* 1000)
1451
return dbus.UInt64(self.approval_delay_milliseconds())
1514
1452
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1515
1453
1516
1454
# ApprovalDuration - property
1517
@dbus_service_property(_interface,
1518
signature="t",
1455
@dbus_service_property(_interface, signature="t",
1519
1456
access="readwrite")
1520
1457
def ApprovalDuration_dbus_property(self, value=None):
1521
1458
if value is None: # get
1522
return dbus.UInt64(self.approval_duration.total_seconds()
1523
* 1000)
1459
return dbus.UInt64(timedelta_to_milliseconds(
1460
self.approval_duration))
1524
1461
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1525
1462
1526
1463
# Name - property
1534
1471
return dbus.String(self.fingerprint)
1535
1472
1536
1473
# Host - property
1537
@dbus_service_property(_interface,
1538
signature="s",
1474
@dbus_service_property(_interface, signature="s",
1539
1475
access="readwrite")
1540
1476
def Host_dbus_property(self, value=None):
1541
1477
if value is None: # get
1542
1478
return dbus.String(self.host)
1543
self.host = str(value)
1479
self.host = unicode(value)
1544
1480
1545
1481
# Created - property
1546
1482
@dbus_service_property(_interface, signature="s", access="read")
1553
1489
return datetime_to_dbus(self.last_enabled)
1554
1490
1555
1491
# Enabled - property
1556
@dbus_service_property(_interface,
1557
signature="b",
1492
@dbus_service_property(_interface, signature="b",
1558
1493
access="readwrite")
1559
1494
def Enabled_dbus_property(self, value=None):
1560
1495
if value is None: # get
1565
1500
self.disable()
1566
1501
1567
1502
# LastCheckedOK - property
1568
@dbus_service_property(_interface,
1569
signature="s",
1503
@dbus_service_property(_interface, signature="s",
1570
1504
access="readwrite")
1571
1505
def LastCheckedOK_dbus_property(self, value=None):
1572
1506
if value is not None:
1575
1509
return datetime_to_dbus(self.last_checked_ok)
1576
1510
1577
1511
# LastCheckerStatus - property
1578
@dbus_service_property(_interface, signature="n", access="read")
1512
@dbus_service_property(_interface, signature="n",
1513
access="read")
1579
1514
def LastCheckerStatus_dbus_property(self):
1580
1515
return dbus.Int16(self.last_checker_status)
1581
1516
1590
1525
return datetime_to_dbus(self.last_approval_request)
1591
1526
1592
1527
# Timeout - property
1593
@dbus_service_property(_interface,
1594
signature="t",
1528
@dbus_service_property(_interface, signature="t",
1595
1529
access="readwrite")
1596
1530
def Timeout_dbus_property(self, value=None):
1597
1531
if value is None: # get
1598
return dbus.UInt64(self.timeout.total_seconds() * 1000)
1532
return dbus.UInt64(self.timeout_milliseconds())
1599
1533
old_timeout = self.timeout
1600
1534
self.timeout = datetime.timedelta(0, 0, 0, value)
1601
1535
# Reschedule disabling
1610
1544
is None):
1611
1545
return
1612
1546
gobject.source_remove(self.disable_initiator_tag)
1613
self.disable_initiator_tag = gobject.timeout_add(
1614
int((self.expires - now).total_seconds() * 1000),
1615
self.disable)
1547
self.disable_initiator_tag = (
1548
gobject.timeout_add(
1549
timedelta_to_milliseconds(self.expires - now),
1550
self.disable))
1616
1551
1617
1552
# ExtendedTimeout - property
1618
@dbus_service_property(_interface,
1619
signature="t",
1553
@dbus_service_property(_interface, signature="t",
1620
1554
access="readwrite")
1621
1555
def ExtendedTimeout_dbus_property(self, value=None):
1622
1556
if value is None: # get
1623
return dbus.UInt64(self.extended_timeout.total_seconds()
1624
* 1000)
1557
return dbus.UInt64(self.extended_timeout_milliseconds())
1625
1558
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1626
1559
1627
1560
# Interval - property
1628
@dbus_service_property(_interface,
1629
signature="t",
1561
@dbus_service_property(_interface, signature="t",
1630
1562
access="readwrite")
1631
1563
def Interval_dbus_property(self, value=None):
1632
1564
if value is None: # get
1633
return dbus.UInt64(self.interval.total_seconds() * 1000)
1565
return dbus.UInt64(self.interval_milliseconds())
1634
1566
self.interval = datetime.timedelta(0, 0, 0, value)
1635
1567
if getattr(self, "checker_initiator_tag", None) is None:
1636
1568
return
1637
1569
if self.enabled:
1638
1570
# Reschedule checker run
1639
1571
gobject.source_remove(self.checker_initiator_tag)
1640
self.checker_initiator_tag = gobject.timeout_add(
1641
value, self.start_checker)
1642
self.start_checker() # Start one now, too
1572
self.checker_initiator_tag = (gobject.timeout_add
1573
(value, self.start_checker))
1574
self.start_checker() # Start one now, too
1643
1575
1644
1576
# Checker - property
1645
@dbus_service_property(_interface,
1646
signature="s",
1577
@dbus_service_property(_interface, signature="s",
1647
1578
access="readwrite")
1648
1579
def Checker_dbus_property(self, value=None):
1649
1580
if value is None: # get
1650
1581
return dbus.String(self.checker_command)
1651
self.checker_command = str(value)
1582
self.checker_command = unicode(value)
1652
1583
1653
1584
# CheckerRunning - property
1654
@dbus_service_property(_interface,
1655
signature="b",
1585
@dbus_service_property(_interface, signature="b",
1656
1586
access="readwrite")
1657
1587
def CheckerRunning_dbus_property(self, value=None):
1658
1588
if value is None: # get
1668
1598
return self.dbus_object_path # is already a dbus.ObjectPath
1669
1599
1670
1600
# Secret = property
1671
@dbus_service_property(_interface,
1672
signature="ay",
1673
access="write",
1674
byte_arrays=True)
1601
@dbus_service_property(_interface, signature="ay",
1602
access="write", byte_arrays=True)
1675
1603
def Secret_dbus_property(self, value):
1676
self.secret = bytes(value)
1604
self.secret = str(value)
1677
1605
1678
1606
del _interface
1679
1607
1683
1611
self._pipe = child_pipe
1684
1612
self._pipe.send(('init', fpr, address))
1685
1613
if not self._pipe.recv():
1686
raise KeyError(fpr)
1614
raise KeyError()
1687
1615
1688
1616
def __getattribute__(self, name):
1689
1617
if name == '_pipe':
1693
1621
if data[0] == 'data':
1694
1622
return data[1]
1695
1623
if data[0] == 'function':
1696
1697
1624
def func(*args, **kwargs):
1698
1625
self._pipe.send(('funcall', name, args, kwargs))
1699
1626
return self._pipe.recv()[1]
1700
1701
1627
return func
1702
1628
1703
1629
def __setattr__(self, name, value):
1715
1641
def handle(self):
1716
1642
with contextlib.closing(self.server.child_pipe) as child_pipe:
1717
1643
logger.info("TCP connection from: %s",
1718
str(self.client_address))
1644
unicode(self.client_address))
1719
1645
logger.debug("Pipe FD: %d",
1720
1646
self.server.child_pipe.fileno())
1721
1647
1722
session = gnutls.connection.ClientSession(
1723
self.request, gnutls.connection .X509Credentials())
1648
session = (gnutls.connection
1649
.ClientSession(self.request,
1650
gnutls.connection
1651
.X509Credentials()))
1724
1652
1725
1653
# Note: gnutls.connection.X509Credentials is really a
1726
1654
# generic GnuTLS certificate credentials object so long as
1735
1663
priority = self.server.gnutls_priority
1736
1664
if priority is None:
1737
1665
priority = "NORMAL"
1738
gnutls.library.functions.gnutls_priority_set_direct(
1739
session._c_object, priority, None)
1666
(gnutls.library.functions
1667
.gnutls_priority_set_direct(session._c_object,
1668
priority, None))
1740
1669
1741
1670
# Start communication using the Mandos protocol
1742
1671
# Get protocol number
1744
1673
logger.debug("Protocol version: %r", line)
1745
1674
try:
1746
1675
if int(line.strip().split()[0]) > 1:
1747
raise RuntimeError(line)
1676
raise RuntimeError
1748
1677
except (ValueError, IndexError, RuntimeError) as error:
1749
1678
logger.error("Unknown protocol version: %s", error)
1750
1679
return
1762
1691
approval_required = False
1763
1692
try:
1764
1693
try:
1765
fpr = self.fingerprint(
1766
self.peer_certificate(session))
1694
fpr = self.fingerprint(self.peer_certificate
1695
(session))
1767
1696
except (TypeError,
1768
1697
gnutls.errors.GNUTLSError) as error:
1769
1698
logger.warning("Bad certificate: %s", error)
1784
1713
while True:
1785
1714
if not client.enabled:
1786
1715
logger.info("Client %s is disabled",
1787
client.name)
1716
client.name)
1788
1717
if self.server.use_dbus:
1789
1718
# Emit D-Bus signal
1790
1719
client.Rejected("Disabled")
1799
1728
if self.server.use_dbus:
1800
1729
# Emit D-Bus signal
1801
1730
client.NeedApproval(
1802
client.approval_delay.total_seconds()
1803
* 1000, client.approved_by_default)
1731
client.approval_delay_milliseconds(),
1732
client.approved_by_default)
1804
1733
else:
1805
1734
logger.warning("Client %s was not approved",
1806
1735
client.name)
1812
1741
#wait until timeout or approved
1813
1742
time = datetime.datetime.now()
1814
1743
client.changedstate.acquire()
1815
client.changedstate.wait(delay.total_seconds())
1744
client.changedstate.wait(
1745
float(timedelta_to_milliseconds(delay)
1746
/ 1000))
1816
1747
client.changedstate.release()
1817
1748
time2 = datetime.datetime.now()
1818
1749
if (time2 - time) >= delay:
1837
1768
logger.warning("gnutls send failed",
1838
1769
exc_info=error)
1839
1770
return
1840
logger.debug("Sent: %d, remaining: %d", sent,
1841
len(client.secret) - (sent_size
1842
+ sent))
1771
logger.debug("Sent: %d, remaining: %d",
1772
sent, len(client.secret)
1773
- (sent_size + sent))
1843
1774
sent_size += sent
1844
1775
1845
1776
logger.info("Sending secret to %s", client.name)
1862
1793
def peer_certificate(session):
1863
1794
"Return the peer's OpenPGP certificate as a bytestring"
1864
1795
# If not an OpenPGP certificate...
1865
if (gnutls.library.functions.gnutls_certificate_type_get(
1866
session._c_object)
1796
if (gnutls.library.functions
1797
.gnutls_certificate_type_get(session._c_object)
1867
1798
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1868
1799
# ...do the normal thing
1869
1800
return session.peer_certificate
1883
1814
def fingerprint(openpgp):
1884
1815
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1885
1816
# New GnuTLS "datum" with the OpenPGP public key
1886
datum = gnutls.library.types.gnutls_datum_t(
1887
ctypes.cast(ctypes.c_char_p(openpgp),
1888
ctypes.POINTER(ctypes.c_ubyte)),
1889
ctypes.c_uint(len(openpgp)))
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))))
1890
1822
# New empty GnuTLS certificate
1891
1823
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1892
gnutls.library.functions.gnutls_openpgp_crt_init(
1893
ctypes.byref(crt))
1824
(gnutls.library.functions
1825
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
1894
1826
# Import the OpenPGP public key into the certificate
1895
gnutls.library.functions.gnutls_openpgp_crt_import(
1896
crt, ctypes.byref(datum),
1897
gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)
1827
(gnutls.library.functions
1828
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1829
gnutls.library.constants
1830
.GNUTLS_OPENPGP_FMT_RAW))
1898
1831
# Verify the self signature in the key
1899
1832
crtverify = ctypes.c_uint()
1900
gnutls.library.functions.gnutls_openpgp_crt_verify_self(
1901
crt, 0, ctypes.byref(crtverify))
1833
(gnutls.library.functions
1834
.gnutls_openpgp_crt_verify_self(crt, 0,
1835
ctypes.byref(crtverify)))
1902
1836
if crtverify.value != 0:
1903
1837
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1904
raise gnutls.errors.CertificateSecurityError(
1905
"Verify failed")
1838
raise (gnutls.errors.CertificateSecurityError
1839
("Verify failed"))
1906
1840
# New buffer for the fingerprint
1907
1841
buf = ctypes.create_string_buffer(20)
1908
1842
buf_len = ctypes.c_size_t()
1909
1843
# Get the fingerprint from the certificate into the buffer
1910
gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint(
1911
crt, ctypes.byref(buf), ctypes.byref(buf_len))
1844
(gnutls.library.functions
1845
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1846
ctypes.byref(buf_len)))
1912
1847
# Deinit the certificate
1913
1848
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1914
1849
# Convert the buffer to a Python bytestring
1920
1855
1921
1856
class MultiprocessingMixIn(object):
1922
1857
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
1923
1924
1858
def sub_process_main(self, request, address):
1925
1859
try:
1926
1860
self.finish_request(request, address)
1938
1872
1939
1873
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1940
1874
""" adds a pipe to the MixIn """
1941
1942
1875
def process_request(self, request, client_address):
1943
1876
"""Overrides and wraps the original process_request().
1944
1877
1953
1886
1954
1887
def add_pipe(self, parent_pipe, proc):
1955
1888
"""Dummy function; override as necessary"""
1956
raise NotImplementedError()
1889
raise NotImplementedError
1957
1890
1958
1891
1959
1892
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1965
1898
interface: None or a network interface name (string)
1966
1899
use_ipv6: Boolean; to use IPv6 or not
1967
1900
"""
1968
1969
1901
def __init__(self, server_address, RequestHandlerClass,
1970
interface=None,
1971
use_ipv6=True,
1972
socketfd=None):
1902
interface=None, use_ipv6=True, socketfd=None):
1973
1903
"""If socketfd is set, use that file descriptor instead of
1974
1904
creating a new one with socket.socket().
1975
1905
"""
2016
1946
self.interface)
2017
1947
else:
2018
1948
try:
2019
self.socket.setsockopt(
2020
socket.SOL_SOCKET, SO_BINDTODEVICE,
2021
(self.interface + "\0").encode("utf-8"))
1949
self.socket.setsockopt(socket.SOL_SOCKET,
1950
SO_BINDTODEVICE,
1951
str(self.interface + '\0'))
2022
1952
except socket.error as error:
2023
1953
if error.errno == errno.EPERM:
2024
1954
logger.error("No permission to bind to"
2038
1968
if self.address_family == socket.AF_INET6:
2039
1969
any_address = "::" # in6addr_any
2040
1970
else:
2041
any_address = "0.0.0.0" # INADDR_ANY
1971
any_address = socket.INADDR_ANY
2042
1972
self.server_address = (any_address,
2043
1973
self.server_address[1])
2044
1974
elif not self.server_address[1]:
2045
self.server_address = (self.server_address[0], 0)
1975
self.server_address = (self.server_address[0],
1976
0)
2046
1977
# if self.interface:
2047
1978
# self.server_address = (self.server_address[0],
2048
1979
# 0, # port
2062
1993
2063
1994
Assumes a gobject.MainLoop event loop.
2064
1995
"""
2065
2066
1996
def __init__(self, server_address, RequestHandlerClass,
2067
interface=None,
2068
use_ipv6=True,
2069
clients=None,
2070
gnutls_priority=None,
2071
use_dbus=True,
2072
socketfd=None):
1997
interface=None, use_ipv6=True, clients=None,
1998
gnutls_priority=None, use_dbus=True, socketfd=None):
2073
1999
self.enabled = False
2074
2000
self.clients = clients
2075
2001
if self.clients is None:
2081
2007
interface = interface,
2082
2008
use_ipv6 = use_ipv6,
2083
2009
socketfd = socketfd)
2084
2085
2010
def server_activate(self):
2086
2011
if self.enabled:
2087
2012
return socketserver.TCPServer.server_activate(self)
2091
2016
2092
2017
def add_pipe(self, parent_pipe, proc):
2093
2018
# Call "handle_ipc" for both data and EOF events
2094
gobject.io_add_watch(
2095
parent_pipe.fileno(),
2096
gobject.IO_IN | gobject.IO_HUP,
2097
functools.partial(self.handle_ipc,
2098
parent_pipe = parent_pipe,
2099
proc = proc))
2019
gobject.io_add_watch(parent_pipe.fileno(),
2020
gobject.IO_IN | gobject.IO_HUP,
2021
functools.partial(self.handle_ipc,
2022
parent_pipe =
2023
parent_pipe,
2024
proc = proc))
2100
2025
2101
def handle_ipc(self, source, condition,
2102
parent_pipe=None,
2103
proc = None,
2104
client_object=None):
2026
def handle_ipc(self, source, condition, parent_pipe=None,
2027
proc = None, client_object=None):
2105
2028
# error, or the other end of multiprocessing.Pipe has closed
2106
2029
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2107
2030
# Wait for other process to exit
2130
2053
parent_pipe.send(False)
2131
2054
return False
2132
2055
2133
gobject.io_add_watch(
2134
parent_pipe.fileno(),
2135
gobject.IO_IN | gobject.IO_HUP,
2136
functools.partial(self.handle_ipc,
2137
parent_pipe = parent_pipe,
2138
proc = proc,
2139
client_object = client))
2056
gobject.io_add_watch(parent_pipe.fileno(),
2057
gobject.IO_IN | gobject.IO_HUP,
2058
functools.partial(self.handle_ipc,
2059
parent_pipe =
2060
parent_pipe,
2061
proc = proc,
2062
client_object =
2063
client))
2140
2064
parent_pipe.send(True)
2141
2065
# remove the old hook in favor of the new above hook on
2142
2066
# same fileno
2148
2072
2149
2073
parent_pipe.send(('data', getattr(client_object,
2150
2074
funcname)(*args,
2151
**kwargs)))
2075
**kwargs)))
2152
2076
2153
2077
if command == 'getattr':
2154
2078
attrname = request[1]
2155
if isinstance(client_object.__getattribute__(attrname),
2156
collections.Callable):
2157
parent_pipe.send(('function', ))
2079
if callable(client_object.__getattribute__(attrname)):
2080
parent_pipe.send(('function',))
2158
2081
else:
2159
parent_pipe.send((
2160
'data', client_object.__getattribute__(attrname)))
2082
parent_pipe.send(('data', client_object
2083
.__getattribute__(attrname)))
2161
2084
2162
2085
if command == 'setattr':
2163
2086
attrname = request[1]
2167
2090
return True
2168
2091
2169
2092
2170
def rfc3339_duration_to_delta(duration):
2171
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2172
2173
>>> rfc3339_duration_to_delta("P7D")
2174
datetime.timedelta(7)
2175
>>> rfc3339_duration_to_delta("PT60S")
2176
datetime.timedelta(0, 60)
2177
>>> rfc3339_duration_to_delta("PT60M")
2178
datetime.timedelta(0, 3600)
2179
>>> rfc3339_duration_to_delta("PT24H")
2180
datetime.timedelta(1)
2181
>>> rfc3339_duration_to_delta("P1W")
2182
datetime.timedelta(7)
2183
>>> rfc3339_duration_to_delta("PT5M30S")
2184
datetime.timedelta(0, 330)
2185
>>> rfc3339_duration_to_delta("P1DT3M20S")
2186
datetime.timedelta(1, 200)
2187
"""
2188
2189
# Parsing an RFC 3339 duration with regular expressions is not
2190
# possible - there would have to be multiple places for the same
2191
# values, like seconds. The current code, while more esoteric, is
2192
# cleaner without depending on a parsing library. If Python had a
2193
# built-in library for parsing we would use it, but we'd like to
2194
# avoid excessive use of external libraries.
2195
2196
# New type for defining tokens, syntax, and semantics all-in-one
2197
Token = collections.namedtuple("Token", (
2198
"regexp", # To match token; if "value" is not None, must have
2199
# a "group" containing digits
2200
"value", # datetime.timedelta or None
2201
"followers")) # Tokens valid after this token
2202
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2203
# the "duration" ABNF definition in RFC 3339, Appendix A.
2204
token_end = Token(re.compile(r"$"), None, frozenset())
2205
token_second = Token(re.compile(r"(\d+)S"),
2206
datetime.timedelta(seconds=1),
2207
frozenset((token_end, )))
2208
token_minute = Token(re.compile(r"(\d+)M"),
2209
datetime.timedelta(minutes=1),
2210
frozenset((token_second, token_end)))
2211
token_hour = Token(re.compile(r"(\d+)H"),
2212
datetime.timedelta(hours=1),
2213
frozenset((token_minute, token_end)))
2214
token_time = Token(re.compile(r"T"),
2215
None,
2216
frozenset((token_hour, token_minute,
2217
token_second)))
2218
token_day = Token(re.compile(r"(\d+)D"),
2219
datetime.timedelta(days=1),
2220
frozenset((token_time, token_end)))
2221
token_month = Token(re.compile(r"(\d+)M"),
2222
datetime.timedelta(weeks=4),
2223
frozenset((token_day, token_end)))
2224
token_year = Token(re.compile(r"(\d+)Y"),
2225
datetime.timedelta(weeks=52),
2226
frozenset((token_month, token_end)))
2227
token_week = Token(re.compile(r"(\d+)W"),
2228
datetime.timedelta(weeks=1),
2229
frozenset((token_end, )))
2230
token_duration = Token(re.compile(r"P"), None,
2231
frozenset((token_year, token_month,
2232
token_day, token_time,
2233
token_week)))
2234
# Define starting values
2235
value = datetime.timedelta() # Value so far
2236
found_token = None
2237
followers = frozenset((token_duration, )) # Following valid tokens
2238
s = duration # String left to parse
2239
# Loop until end token is found
2240
while found_token is not token_end:
2241
# Search for any currently valid tokens
2242
for token in followers:
2243
match = token.regexp.match(s)
2244
if match is not None:
2245
# Token found
2246
if token.value is not None:
2247
# Value found, parse digits
2248
factor = int(match.group(1), 10)
2249
# Add to value so far
2250
value += factor * token.value
2251
# Strip token from string
2252
s = token.regexp.sub("", s, 1)
2253
# Go to found token
2254
found_token = token
2255
# Set valid next tokens
2256
followers = found_token.followers
2257
break
2258
else:
2259
# No currently valid tokens were found
2260
raise ValueError("Invalid RFC 3339 duration: {!r}"
2261
.format(duration))
2262
# End token found
2263
return value
2264
2265
2266
2093
def string_to_delta(interval):
2267
2094
"""Parse a string and return a datetime.timedelta
2268
2095
2279
2106
>>> string_to_delta('5m 30s')
2280
2107
datetime.timedelta(0, 330)
2281
2108
"""
2282
2283
try:
2284
return rfc3339_duration_to_delta(interval)
2285
except ValueError:
2286
pass
2287
2288
2109
timevalue = datetime.timedelta(0)
2289
2110
for s in interval.split():
2290
2111
try:
2291
suffix = s[-1]
2112
suffix = unicode(s[-1])
2292
2113
value = int(s[:-1])
2293
2114
if suffix == "d":
2294
2115
delta = datetime.timedelta(value)
2301
2122
elif suffix == "w":
2302
2123
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2303
2124
else:
2304
raise ValueError("Unknown suffix {!r}".format(suffix))
2305
except IndexError as e:
2125
raise ValueError("Unknown suffix {0!r}"
2126
.format(suffix))
2127
except (ValueError, IndexError) as e:
2306
2128
raise ValueError(*(e.args))
2307
2129
timevalue += delta
2308
2130
return timevalue
2324
2146
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2325
2147
if not stat.S_ISCHR(os.fstat(null).st_mode):
2326
2148
raise OSError(errno.ENODEV,
2327
"{} not a character device"
2149
"{0} not a character device"
2328
2150
.format(os.devnull))
2329
2151
os.dup2(null, sys.stdin.fileno())
2330
2152
os.dup2(null, sys.stdout.fileno())
2340
2162
2341
2163
parser = argparse.ArgumentParser()
2342
2164
parser.add_argument("-v", "--version", action="version",
2343
version = "%(prog)s {}".format(version),
2165
version = "%(prog)s {0}".format(version),
2344
2166
help="show version number and exit")
2345
2167
parser.add_argument("-i", "--interface", metavar="IF",
2346
2168
help="Bind to interface IF")
2352
2174
help="Run self-test")
2353
2175
parser.add_argument("--debug", action="store_true",
2354
2176
help="Debug mode; run in foreground and log"
2355
" to terminal", default=None)
2177
" to terminal")
2356
2178
parser.add_argument("--debuglevel", metavar="LEVEL",
2357
2179
help="Debug level for stdout output")
2358
2180
parser.add_argument("--priority", help="GnuTLS"
2365
2187
" files")
2366
2188
parser.add_argument("--no-dbus", action="store_false",
2367
2189
dest="use_dbus", help="Do not provide D-Bus"
2368
" system bus interface", default=None)
2190
" system bus interface")
2369
2191
parser.add_argument("--no-ipv6", action="store_false",
2370
dest="use_ipv6", help="Do not use IPv6",
2371
default=None)
2192
dest="use_ipv6", help="Do not use IPv6")
2372
2193
parser.add_argument("--no-restore", action="store_false",
2373
2194
dest="restore", help="Do not restore stored"
2374
" state", default=None)
2195
" state")
2375
2196
parser.add_argument("--socket", type=int,
2376
2197
help="Specify a file descriptor to a network"
2377
2198
" socket to use instead of creating one")
2378
2199
parser.add_argument("--statedir", metavar="DIR",
2379
2200
help="Directory to save/restore state in")
2380
2201
parser.add_argument("--foreground", action="store_true",
2381
help="Run in foreground", default=None)
2382
parser.add_argument("--no-zeroconf", action="store_false",
2383
dest="zeroconf", help="Do not use Zeroconf",
2384
default=None)
2202
help="Run in foreground")
2385
2203
2386
2204
options = parser.parse_args()
2387
2205
2388
2206
if options.check:
2389
2207
import doctest
2390
fail_count, test_count = doctest.testmod()
2391
sys.exit(os.EX_OK if fail_count == 0 else 1)
2208
doctest.testmod()
2209
sys.exit()
2392
2210
2393
2211
# Default values for config file for server-global settings
2394
2212
server_defaults = { "interface": "",
2396
2214
"port": "",
2397
2215
"debug": "False",
2398
2216
"priority":
2399
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2400
":+SIGN-RSA-SHA224:+SIGN-RSA-RMD160",
2217
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2401
2218
"servicename": "Mandos",
2402
2219
"use_dbus": "True",
2403
2220
"use_ipv6": "True",
2406
2223
"socket": "",
2407
2224
"statedir": "/var/lib/mandos",
2408
2225
"foreground": "False",
2409
"zeroconf": "True",
2410
}
2226
}
2411
2227
2412
2228
# Parse config file for server-global settings
2413
2229
server_config = configparser.SafeConfigParser(server_defaults)
2414
2230
del server_defaults
2415
server_config.read(os.path.join(options.configdir, "mandos.conf"))
2231
server_config.read(os.path.join(options.configdir,
2232
"mandos.conf"))
2416
2233
# Convert the SafeConfigParser object to a dict
2417
2234
server_settings = server_config.defaults()
2418
2235
# Use the appropriate methods on the non-string config options
2436
2253
# Override the settings from the config file with command line
2437
2254
# options, if set.
2438
2255
for option in ("interface", "address", "port", "debug",
2439
"priority", "servicename", "configdir", "use_dbus",
2440
"use_ipv6", "debuglevel", "restore", "statedir",
2441
"socket", "foreground", "zeroconf"):
2256
"priority", "servicename", "configdir",
2257
"use_dbus", "use_ipv6", "debuglevel", "restore",
2258
"statedir", "socket", "foreground"):
2442
2259
value = getattr(options, option)
2443
2260
if value is not None:
2444
2261
server_settings[option] = value
2445
2262
del options
2446
2263
# Force all strings to be unicode
2447
2264
for option in server_settings.keys():
2448
if isinstance(server_settings[option], bytes):
2449
server_settings[option] = (server_settings[option]
2450
.decode("utf-8"))
2451
# Force all boolean options to be boolean
2452
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2453
"foreground", "zeroconf"):
2454
server_settings[option] = bool(server_settings[option])
2265
if type(server_settings[option]) is str:
2266
server_settings[option] = unicode(server_settings[option])
2455
2267
# Debug implies foreground
2456
2268
if server_settings["debug"]:
2457
2269
server_settings["foreground"] = True
2459
2271
2460
2272
##################################################################
2461
2273
2462
if (not server_settings["zeroconf"]
2463
and not (server_settings["port"]
2464
or server_settings["socket"] != "")):
2465
parser.error("Needs port or socket to work without Zeroconf")
2466
2467
2274
# For convenience
2468
2275
debug = server_settings["debug"]
2469
2276
debuglevel = server_settings["debuglevel"]
2472
2279
stored_state_path = os.path.join(server_settings["statedir"],
2473
2280
stored_state_file)
2474
2281
foreground = server_settings["foreground"]
2475
zeroconf = server_settings["zeroconf"]
2476
2282
2477
2283
if debug:
2478
2284
initlogger(debug, logging.DEBUG)
2484
2290
initlogger(debug, level)
2485
2291
2486
2292
if server_settings["servicename"] != "Mandos":
2487
syslogger.setFormatter(
2488
logging.Formatter('Mandos ({}) [%(process)d]:'
2489
' %(levelname)s: %(message)s'.format(
2490
server_settings["servicename"])))
2293
syslogger.setFormatter(logging.Formatter
2294
('Mandos ({0}) [%(process)d]:'
2295
' %(levelname)s: %(message)s'
2296
.format(server_settings
2297
["servicename"])))
2491
2298
2492
2299
# Parse config file with clients
2493
2300
client_config = configparser.SafeConfigParser(Client
2498
2305
global mandos_dbus_service
2499
2306
mandos_dbus_service = None
2500
2307
2501
socketfd = None
2502
if server_settings["socket"] != "":
2503
socketfd = server_settings["socket"]
2504
tcp_server = MandosServer(
2505
(server_settings["address"], server_settings["port"]),
2506
ClientHandler,
2507
interface=(server_settings["interface"] or None),
2508
use_ipv6=use_ipv6,
2509
gnutls_priority=server_settings["priority"],
2510
use_dbus=use_dbus,
2511
socketfd=socketfd)
2308
tcp_server = MandosServer((server_settings["address"],
2309
server_settings["port"]),
2310
ClientHandler,
2311
interface=(server_settings["interface"]
2312
or None),
2313
use_ipv6=use_ipv6,
2314
gnutls_priority=
2315
server_settings["priority"],
2316
use_dbus=use_dbus,
2317
socketfd=(server_settings["socket"]
2318
or None))
2512
2319
if not foreground:
2513
pidfilename = "/run/mandos.pid"
2514
if not os.path.isdir("/run/."):
2515
pidfilename = "/var/run/mandos.pid"
2320
pidfilename = "/var/run/mandos.pid"
2516
2321
pidfile = None
2517
2322
try:
2518
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2323
pidfile = open(pidfilename, "w")
2519
2324
except IOError as e:
2520
2325
logger.error("Could not open file %r", pidfilename,
2521
2326
exc_info=e)
2535
2340
os.setuid(uid)
2536
2341
except OSError as error:
2537
2342
if error.errno != errno.EPERM:
2538
raise
2343
raise error
2539
2344
2540
2345
if debug:
2541
2346
# Enable all possible GnuTLS debugging
2548
2353
def debug_gnutls(level, string):
2549
2354
logger.debug("GnuTLS: %s", string[:-1])
2550
2355
2551
gnutls.library.functions.gnutls_global_set_log_function(
2552
debug_gnutls)
2356
(gnutls.library.functions
2357
.gnutls_global_set_log_function(debug_gnutls))
2553
2358
2554
2359
# Redirect stdin so all checkers get /dev/null
2555
2360
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2575
2380
if use_dbus:
2576
2381
try:
2577
2382
bus_name = dbus.service.BusName("se.recompile.Mandos",
2578
bus,
2579
do_not_queue=True)
2580
old_bus_name = dbus.service.BusName(
2581
"se.bsnet.fukt.Mandos", bus,
2582
do_not_queue=True)
2583
except dbus.exceptions.DBusException as e:
2383
bus, do_not_queue=True)
2384
old_bus_name = (dbus.service.BusName
2385
("se.bsnet.fukt.Mandos", bus,
2386
do_not_queue=True))
2387
except dbus.exceptions.NameExistsException as e:
2584
2388
logger.error("Disabling D-Bus:", exc_info=e)
2585
2389
use_dbus = False
2586
2390
server_settings["use_dbus"] = False
2587
2391
tcp_server.use_dbus = False
2588
if zeroconf:
2589
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2590
service = AvahiServiceToSyslog(
2591
name = server_settings["servicename"],
2592
servicetype = "_mandos._tcp",
2593
protocol = protocol,
2594
bus = bus)
2595
if server_settings["interface"]:
2596
service.interface = if_nametoindex(
2597
server_settings["interface"].encode("utf-8"))
2392
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2393
service = AvahiServiceToSyslog(name =
2394
server_settings["servicename"],
2395
servicetype = "_mandos._tcp",
2396
protocol = protocol, bus = bus)
2397
if server_settings["interface"]:
2398
service.interface = (if_nametoindex
2399
(str(server_settings["interface"])))
2598
2400
2599
2401
global multiprocessing_manager
2600
2402
multiprocessing_manager = multiprocessing.Manager()
2607
2409
old_client_settings = {}
2608
2410
clients_data = {}
2609
2411
2610
# This is used to redirect stdout and stderr for checker processes
2611
global wnull
2612
wnull = open(os.devnull, "w") # A writable /dev/null
2613
# Only used if server is running in foreground but not in debug
2614
# mode
2615
if debug or not foreground:
2616
wnull.close()
2617
2618
2412
# Get client data and settings from last running state.
2619
2413
if server_settings["restore"]:
2620
2414
try:
2621
2415
with open(stored_state_path, "rb") as stored_state:
2622
clients_data, old_client_settings = pickle.load(
2623
stored_state)
2416
clients_data, old_client_settings = (pickle.load
2417
(stored_state))
2624
2418
os.remove(stored_state_path)
2625
2419
except IOError as e:
2626
2420
if e.errno == errno.ENOENT:
2627
logger.warning("Could not load persistent state:"
2628
" {}".format(os.strerror(e.errno)))
2421
logger.warning("Could not load persistent state: {0}"
2422
.format(os.strerror(e.errno)))
2629
2423
else:
2630
2424
logger.critical("Could not load persistent state:",
2631
2425
exc_info=e)
2632
2426
raise
2633
2427
except EOFError as e:
2634
2428
logger.warning("Could not load persistent state: "
2635
"EOFError:",
2636
exc_info=e)
2429
"EOFError:", exc_info=e)
2637
2430
2638
2431
with PGPEngine() as pgp:
2639
for client_name, client in clients_data.items():
2640
# Skip removed clients
2641
if client_name not in client_settings:
2642
continue
2643
2432
for client_name, client in clients_data.iteritems():
2644
2433
# Decide which value to use after restoring saved state.
2645
2434
# We have three different values: Old config file,
2646
2435
# new config file, and saved state.
2651
2440
# For each value in new config, check if it
2652
2441
# differs from the old config value (Except for
2653
2442
# the "secret" attribute)
2654
if (name != "secret"
2655
and (value !=
2656
old_client_settings[client_name][name])):
2443
if (name != "secret" and
2444
value != old_client_settings[client_name]
2445
[name]):
2657
2446
client[name] = value
2658
2447
except KeyError:
2659
2448
pass
2660
2449
2661
2450
# Clients who has passed its expire date can still be
2662
# enabled if its last checker was successful. A Client
2451
# enabled if its last checker was successful. Clients
2663
2452
# whose checker succeeded before we stored its state is
2664
2453
# assumed to have successfully run all checkers during
2665
2454
# downtime.
2667
2456
if datetime.datetime.utcnow() >= client["expires"]:
2668
2457
if not client["last_checked_ok"]:
2669
2458
logger.warning(
2670
"disabling client {} - Client never "
2671
"performed a successful checker".format(
2672
client_name))
2459
"disabling client {0} - Client never "
2460
"performed a successful checker"
2461
.format(client_name))
2673
2462
client["enabled"] = False
2674
2463
elif client["last_checker_status"] != 0:
2675
2464
logger.warning(
2676
"disabling client {} - Client last"
2677
" checker failed with error code"
2678
" {}".format(
2679
client_name,
2680
client["last_checker_status"]))
2465
"disabling client {0} - Client "
2466
"last checker failed with error code {1}"
2467
.format(client_name,
2468
client["last_checker_status"]))
2681
2469
client["enabled"] = False
2682
2470
else:
2683
client["expires"] = (
2684
datetime.datetime.utcnow()
2685
+ client["timeout"])
2471
client["expires"] = (datetime.datetime
2472
.utcnow()
2473
+ client["timeout"])
2686
2474
logger.debug("Last checker succeeded,"
2687
" keeping {} enabled".format(
2688
client_name))
2475
" keeping {0} enabled"
2476
.format(client_name))
2689
2477
try:
2690
client["secret"] = pgp.decrypt(
2691
client["encrypted_secret"],
2692
client_settings[client_name]["secret"])
2478
client["secret"] = (
2479
pgp.decrypt(client["encrypted_secret"],
2480
client_settings[client_name]
2481
["secret"]))
2693
2482
except PGPError:
2694
2483
# If decryption fails, we use secret from new settings
2695
logger.debug("Failed to decrypt {} old secret".format(
2696
client_name))
2697
client["secret"] = (client_settings[client_name]
2698
["secret"])
2484
logger.debug("Failed to decrypt {0} old secret"
2485
.format(client_name))
2486
client["secret"] = (
2487
client_settings[client_name]["secret"])
2699
2488
2700
2489
# Add/remove clients based on new changes made to config
2701
2490
for client_name in (set(old_client_settings)
2706
2495
clients_data[client_name] = client_settings[client_name]
2707
2496
2708
2497
# Create all client objects
2709
for client_name, client in clients_data.items():
2498
for client_name, client in clients_data.iteritems():
2710
2499
tcp_server.clients[client_name] = client_class(
2711
name = client_name,
2712
settings = client,
2713
server_settings = server_settings)
2500
name = client_name, settings = client)
2714
2501
2715
2502
if not tcp_server.clients:
2716
2503
logger.warning("No clients defined")
2717
2504
2718
2505
if not foreground:
2719
2506
if pidfile is not None:
2720
pid = os.getpid()
2721
2507
try:
2722
2508
with pidfile:
2723
print(pid, file=pidfile)
2509
pid = os.getpid()
2510
pidfile.write(str(pid) + "\n".encode("utf-8"))
2724
2511
except IOError:
2725
2512
logger.error("Could not write to file %r with PID %d",
2726
2513
pidfilename, pid)
2731
2518
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2732
2519
2733
2520
if use_dbus:
2734
2735
@alternate_dbus_interfaces(
2736
{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
2521
@alternate_dbus_interfaces({"se.recompile.Mandos":
2522
"se.bsnet.fukt.Mandos"})
2737
2523
class MandosDBusService(DBusObjectWithProperties):
2738
2524
"""A D-Bus proxy object"""
2739
2740
2525
def __init__(self):
2741
2526
dbus.service.Object.__init__(self, bus, "/")
2742
2743
2527
_interface = "se.recompile.Mandos"
2744
2528
2745
2529
@dbus_interface_annotations(_interface)
2746
2530
def _foo(self):
2747
return {
2748
"org.freedesktop.DBus.Property.EmitsChangedSignal":
2749
"false" }
2531
return { "org.freedesktop.DBus.Property"
2532
".EmitsChangedSignal":
2533
"false"}
2750
2534
2751
2535
@dbus.service.signal(_interface, signature="o")
2752
2536
def ClientAdded(self, objpath):
2766
2550
@dbus.service.method(_interface, out_signature="ao")
2767
2551
def GetAllClients(self):
2768
2552
"D-Bus method"
2769
return dbus.Array(c.dbus_object_path for c in
2553
return dbus.Array(c.dbus_object_path
2554
for c in
2770
2555
tcp_server.clients.itervalues())
2771
2556
2772
2557
@dbus.service.method(_interface,
2774
2559
def GetAllClientsWithProperties(self):
2775
2560
"D-Bus method"
2776
2561
return dbus.Dictionary(
2777
{ c.dbus_object_path: c.GetAll("")
2778
for c in tcp_server.clients.itervalues() },
2562
((c.dbus_object_path, c.GetAll(""))
2563
for c in tcp_server.clients.itervalues()),
2779
2564
signature="oa{sv}")
2780
2565
2781
2566
@dbus.service.method(_interface, in_signature="o")
2798
2583
2799
2584
def cleanup():
2800
2585
"Cleanup function; run on exit"
2801
if zeroconf:
2802
service.cleanup()
2586
service.cleanup()
2803
2587
2804
2588
multiprocessing.active_children()
2805
wnull.close()
2806
2589
if not (tcp_server.clients or client_settings):
2807
2590
return
2808
2591
2819
2602
2820
2603
# A list of attributes that can not be pickled
2821
2604
# + secret.
2822
exclude = { "bus", "changedstate", "secret",
2823
"checker", "server_settings" }
2824
for name, typ in inspect.getmembers(dbus.service
2825
.Object):
2605
exclude = set(("bus", "changedstate", "secret",
2606
"checker"))
2607
for name, typ in (inspect.getmembers
2608
(dbus.service.Object)):
2826
2609
exclude.add(name)
2827
2610
2828
2611
client_dict["encrypted_secret"] = (client
2835
2618
del client_settings[client.name]["secret"]
2836
2619
2837
2620
try:
2838
with tempfile.NamedTemporaryFile(
2839
mode='wb',
2840
suffix=".pickle",
2841
prefix='clients-',
2842
dir=os.path.dirname(stored_state_path),
2843
delete=False) as stored_state:
2621
with (tempfile.NamedTemporaryFile
2622
(mode='wb', suffix=".pickle", prefix='clients-',
2623
dir=os.path.dirname(stored_state_path),
2624
delete=False)) as stored_state:
2844
2625
pickle.dump((clients, client_settings), stored_state)
2845
tempname = stored_state.name
2626
tempname=stored_state.name
2846
2627
os.rename(tempname, stored_state_path)
2847
2628
except (IOError, OSError) as e:
2848
2629
if not debug:
2851
2632
except NameError:
2852
2633
pass
2853
2634
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
2854
logger.warning("Could not save persistent state: {}"
2635
logger.warning("Could not save persistent state: {0}"
2855
2636
.format(os.strerror(e.errno)))
2856
2637
else:
2857
2638
logger.warning("Could not save persistent state:",
2858
2639
exc_info=e)
2859
raise
2640
raise e
2860
2641
2861
2642
# Delete all clients, and settings from config
2862
2643
while tcp_server.clients:
2867
2648
client.disable(quiet=True)
2868
2649
if use_dbus:
2869
2650
# Emit D-Bus signal
2870
mandos_dbus_service.ClientRemoved(
2871
client.dbus_object_path, client.name)
2651
mandos_dbus_service.ClientRemoved(client
2652
.dbus_object_path,
2653
client.name)
2872
2654
client_settings.clear()
2873
2655
2874
2656
atexit.register(cleanup)
2885
2667
tcp_server.server_activate()
2886
2668
2887
2669
# Find out what port we got
2888
if zeroconf:
2889
service.port = tcp_server.socket.getsockname()[1]
2670
service.port = tcp_server.socket.getsockname()[1]
2890
2671
if use_ipv6:
2891
2672
logger.info("Now listening on address %r, port %d,"
2892
2673
" flowinfo %d, scope_id %d",
2898
2679
#service.interface = tcp_server.socket.getsockname()[3]
2899
2680
2900
2681
try:
2901
if zeroconf:
2902
# From the Avahi example code
2903
try:
2904
service.activate()
2905
except dbus.exceptions.DBusException as error:
2906
logger.critical("D-Bus Exception", exc_info=error)
2907
cleanup()
2908
sys.exit(1)
2909
# End of Avahi example code
2682
# From the Avahi example code
2683
try:
2684
service.activate()
2685
except dbus.exceptions.DBusException as error:
2686
logger.critical("D-Bus Exception", exc_info=error)
2687
cleanup()
2688
sys.exit(1)
2689
# End of Avahi example code
2910
2690
2911
2691
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2912
2692
lambda *args, **kwargs:
2927
2707
# Must run before the D-Bus bus name gets deregistered
2928
2708
cleanup()
2929
2709
2930
2931
2710
if __name__ == '__main__':
2932
2711
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0