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- Committer: Teddy Hogeborn
- Date: 2015-07-20 00:18:59 UTC
- Revision ID: teddy@recompile.se-20150720001859-4373dkxokj7bt666
plugin-runner: Minor fix: close helperdir before exiting in fork.
* plugin-runner.c: Minor fix: close helperdir before exiting in fork
if helper program could not be opened.
* plugin-runner.c: Minor fix: close helperdir before exiting in fork
if helper program could not be opened.
- files added:
- debian/upstream
- plugin-helpers
- files modified:
- DBUS-API
added
removed
mandos
1
#!/usr/bin/python
1
#!/usr/bin/python2.7
2
2
# -*- mode: python; coding: utf-8 -*-
3
3
#
4
4
# Mandos server - give out binary blobs to connecting clients.
11
11
# "AvahiService" class, and some lines in "main".
12
12
#
13
13
# Everything else is
14
# Copyright © 2008-2012 Teddy Hogeborn
15
# Copyright © 2008-2012 Björn Påhlsson
14
# Copyright © 2008-2015 Teddy Hogeborn
15
# Copyright © 2008-2015 Björn Påhlsson
16
16
#
17
17
# This program is free software: you can redistribute it and/or modify
18
18
# it under the terms of the GNU General Public License as published by
36
36
37
37
from future_builtins import *
38
38
39
import SocketServer as socketserver
39
try:
40
import SocketServer as socketserver
41
except ImportError:
42
import socketserver
40
43
import socket
41
44
import argparse
42
45
import datetime
47
50
import gnutls.library.functions
48
51
import gnutls.library.constants
49
52
import gnutls.library.types
50
import ConfigParser as configparser
53
try:
54
import ConfigParser as configparser
55
except ImportError:
56
import configparser
51
57
import sys
52
58
import re
53
59
import os
62
68
import struct
63
69
import fcntl
64
70
import functools
65
import cPickle as pickle
71
try:
72
import cPickle as pickle
73
except ImportError:
74
import pickle
66
75
import multiprocessing
67
76
import types
68
77
import binascii
69
78
import tempfile
70
79
import itertools
80
import collections
81
import codecs
71
82
72
83
import dbus
73
84
import dbus.service
74
import gobject
85
try:
86
import gobject
87
except ImportError:
88
from gi.repository import GObject as gobject
75
89
import avahi
76
90
from dbus.mainloop.glib import DBusGMainLoop
77
91
import ctypes
78
92
import ctypes.util
79
93
import xml.dom.minidom
80
94
import inspect
81
import GnuPGInterface
82
95
83
96
try:
84
97
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
88
101
except ImportError:
89
102
SO_BINDTODEVICE = None
90
103
91
version = "1.6.0"
104
if sys.version_info.major == 2:
105
str = unicode
106
107
version = "1.6.9"
92
108
stored_state_file = "clients.pickle"
93
109
94
110
logger = logging.getLogger()
95
syslogger = (logging.handlers.SysLogHandler
96
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
97
address = str("/dev/log")))
111
syslogger = None
98
112
99
113
try:
100
if_nametoindex = (ctypes.cdll.LoadLibrary
101
(ctypes.util.find_library("c"))
102
.if_nametoindex)
114
if_nametoindex = ctypes.cdll.LoadLibrary(
115
ctypes.util.find_library("c")).if_nametoindex
103
116
except (OSError, AttributeError):
117
104
118
def if_nametoindex(interface):
105
119
"Get an interface index the hard way, i.e. using fcntl()"
106
120
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
107
121
with contextlib.closing(socket.socket()) as s:
108
122
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
109
struct.pack(str("16s16x"),
110
interface))
111
interface_index = struct.unpack(str("I"),
112
ifreq[16:20])[0]
123
struct.pack(b"16s16x", interface))
124
interface_index = struct.unpack("I", ifreq[16:20])[0]
113
125
return interface_index
114
126
115
127
116
128
def initlogger(debug, level=logging.WARNING):
117
129
"""init logger and add loglevel"""
118
130
131
global syslogger
132
syslogger = (logging.handlers.SysLogHandler(
133
facility = logging.handlers.SysLogHandler.LOG_DAEMON,
134
address = "/dev/log"))
119
135
syslogger.setFormatter(logging.Formatter
120
136
('Mandos [%(process)d]: %(levelname)s:'
121
137
' %(message)s'))
138
154
139
155
class PGPEngine(object):
140
156
"""A simple class for OpenPGP symmetric encryption & decryption"""
157
141
158
def __init__(self):
142
self.gnupg = GnuPGInterface.GnuPG()
143
159
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
144
self.gnupg = GnuPGInterface.GnuPG()
145
self.gnupg.options.meta_interactive = False
146
self.gnupg.options.homedir = self.tempdir
147
self.gnupg.options.extra_args.extend(['--force-mdc',
148
'--quiet',
149
'--no-use-agent'])
160
self.gnupgargs = ['--batch',
161
'--home', self.tempdir,
162
'--force-mdc',
163
'--quiet',
164
'--no-use-agent']
150
165
151
166
def __enter__(self):
152
167
return self
174
189
def password_encode(self, password):
175
190
# Passphrase can not be empty and can not contain newlines or
176
191
# NUL bytes. So we prefix it and hex encode it.
177
return b"mandos" + binascii.hexlify(password)
192
encoded = b"mandos" + binascii.hexlify(password)
193
if len(encoded) > 2048:
194
# GnuPG can't handle long passwords, so encode differently
195
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
196
.replace(b"\n", b"\\n")
197
.replace(b"\0", b"\\x00"))
198
return encoded
178
199
179
200
def encrypt(self, data, password):
180
self.gnupg.passphrase = self.password_encode(password)
181
with open(os.devnull, "w") as devnull:
182
try:
183
proc = self.gnupg.run(['--symmetric'],
184
create_fhs=['stdin', 'stdout'],
185
attach_fhs={'stderr': devnull})
186
with contextlib.closing(proc.handles['stdin']) as f:
187
f.write(data)
188
with contextlib.closing(proc.handles['stdout']) as f:
189
ciphertext = f.read()
190
proc.wait()
191
except IOError as e:
192
raise PGPError(e)
193
self.gnupg.passphrase = None
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)
194
216
return ciphertext
195
217
196
218
def decrypt(self, data, password):
197
self.gnupg.passphrase = self.password_encode(password)
198
with open(os.devnull, "w") as devnull:
199
try:
200
proc = self.gnupg.run(['--decrypt'],
201
create_fhs=['stdin', 'stdout'],
202
attach_fhs={'stderr': devnull})
203
with contextlib.closing(proc.handles['stdin']) as f:
204
f.write(data)
205
with contextlib.closing(proc.handles['stdout']) as f:
206
decrypted_plaintext = f.read()
207
proc.wait()
208
except IOError as e:
209
raise PGPError(e)
210
self.gnupg.passphrase = None
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)
211
234
return decrypted_plaintext
212
235
213
236
214
237
class AvahiError(Exception):
215
238
def __init__(self, value, *args, **kwargs):
216
239
self.value = value
217
super(AvahiError, self).__init__(value, *args, **kwargs)
218
def __unicode__(self):
219
return unicode(repr(self.value))
240
return super(AvahiError, self).__init__(value, *args,
241
**kwargs)
242
220
243
221
244
class AvahiServiceError(AvahiError):
222
245
pass
223
246
247
224
248
class AvahiGroupError(AvahiError):
225
249
pass
226
250
233
257
Used to optionally bind to the specified interface.
234
258
name: string; Example: 'Mandos'
235
259
type: string; Example: '_mandos._tcp'.
236
See <http://www.dns-sd.org/ServiceTypes.html>
260
See <https://www.iana.org/assignments/service-names-port-numbers>
237
261
port: integer; what port to announce
238
262
TXT: list of strings; TXT record for the service
239
263
domain: string; Domain to publish on, default to .local if empty.
246
270
bus: dbus.SystemBus()
247
271
"""
248
272
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):
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):
253
284
self.interface = interface
254
285
self.name = name
255
286
self.type = servicetype
265
296
self.bus = bus
266
297
self.entry_group_state_changed_match = None
267
298
268
def rename(self):
299
def rename(self, remove=True):
269
300
"""Derived from the Avahi example code"""
270
301
if self.rename_count >= self.max_renames:
271
302
logger.critical("No suitable Zeroconf service name found"
272
303
" after %i retries, exiting.",
273
304
self.rename_count)
274
305
raise AvahiServiceError("Too many renames")
275
self.name = unicode(self.server
276
.GetAlternativeServiceName(self.name))
306
self.name = str(
307
self.server.GetAlternativeServiceName(self.name))
308
self.rename_count += 1
277
309
logger.info("Changing Zeroconf service name to %r ...",
278
310
self.name)
279
self.remove()
311
if remove:
312
self.remove()
280
313
try:
281
314
self.add()
282
315
except dbus.exceptions.DBusException as error:
283
logger.critical("D-Bus Exception", exc_info=error)
284
self.cleanup()
285
os._exit(1)
286
self.rename_count += 1
316
if (error.get_dbus_name()
317
== "org.freedesktop.Avahi.CollisionError"):
318
logger.info("Local Zeroconf service name collision.")
319
return self.rename(remove=False)
320
else:
321
logger.critical("D-Bus Exception", exc_info=error)
322
self.cleanup()
323
os._exit(1)
287
324
288
325
def remove(self):
289
326
"""Derived from the Avahi example code"""
327
364
self.rename()
328
365
elif state == avahi.ENTRY_GROUP_FAILURE:
329
366
logger.critical("Avahi: Error in group state changed %s",
330
unicode(error))
331
raise AvahiGroupError("State changed: {0!s}"
332
.format(error))
367
str(error))
368
raise AvahiGroupError("State changed: {!s}".format(error))
333
369
334
370
def cleanup(self):
335
371
"""Derived from the Avahi example code"""
345
381
def server_state_changed(self, state, error=None):
346
382
"""Derived from the Avahi example code"""
347
383
logger.debug("Avahi server state change: %i", state)
348
bad_states = { avahi.SERVER_INVALID:
349
"Zeroconf server invalid",
350
avahi.SERVER_REGISTERING: None,
351
avahi.SERVER_COLLISION:
352
"Zeroconf server name collision",
353
avahi.SERVER_FAILURE:
354
"Zeroconf server failure" }
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
}
355
390
if state in bad_states:
356
391
if bad_states[state] is not None:
357
392
if error is None:
360
395
logger.error(bad_states[state] + ": %r", error)
361
396
self.cleanup()
362
397
elif state == avahi.SERVER_RUNNING:
363
self.add()
398
try:
399
self.add()
400
except dbus.exceptions.DBusException as error:
401
if (error.get_dbus_name()
402
== "org.freedesktop.Avahi.CollisionError"):
403
logger.info("Local Zeroconf service name"
404
" collision.")
405
return self.rename(remove=False)
406
else:
407
logger.critical("D-Bus Exception", exc_info=error)
408
self.cleanup()
409
os._exit(1)
364
410
else:
365
411
if error is None:
366
412
logger.debug("Unknown state: %r", state)
376
422
follow_name_owner_changes=True),
377
423
avahi.DBUS_INTERFACE_SERVER)
378
424
self.server.connect_to_signal("StateChanged",
379
self.server_state_changed)
425
self.server_state_changed)
380
426
self.server_state_changed(self.server.GetState())
381
427
382
428
383
429
class AvahiServiceToSyslog(AvahiService):
384
def rename(self):
430
def rename(self, *args, **kwargs):
385
431
"""Add the new name to the syslog messages"""
386
ret = AvahiService.rename(self)
387
syslogger.setFormatter(logging.Formatter
388
('Mandos ({0}) [%(process)d]:'
389
' %(levelname)s: %(message)s'
390
.format(self.name)))
432
ret = AvahiService.rename(self, *args, **kwargs)
433
syslogger.setFormatter(logging.Formatter(
434
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
435
.format(self.name)))
391
436
return ret
392
437
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
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()
400
447
401
448
class Client(object):
402
449
"""A representation of a client host served by this server.
429
476
last_checker_status: integer between 0 and 255 reflecting exit
430
477
status of last checker. -1 reflects crashed
431
478
checker, -2 means no checker completed yet.
479
last_checker_signal: The signal which killed the last checker, if
480
last_checker_status is -1
432
481
last_enabled: datetime.datetime(); (UTC) or None
433
482
name: string; from the config file, used in log messages and
434
483
D-Bus identifiers
439
488
runtime_expansions: Allowed attributes for runtime expansion.
440
489
expires: datetime.datetime(); time (UTC) when a client will be
441
490
disabled, or None
491
server_settings: The server_settings dict from main()
442
492
"""
443
493
444
494
runtime_expansions = ("approval_delay", "approval_duration",
446
496
"fingerprint", "host", "interval",
447
497
"last_approval_request", "last_checked_ok",
448
498
"last_enabled", "name", "timeout")
449
client_defaults = { "timeout": "5m",
450
"extended_timeout": "15m",
451
"interval": "2m",
452
"checker": "fping -q -- %%(host)s",
453
"host": "",
454
"approval_delay": "0s",
455
"approval_duration": "1s",
456
"approved_by_default": "True",
457
"enabled": "True",
458
}
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)
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
}
474
510
475
511
@staticmethod
476
512
def config_parser(config):
492
528
client["enabled"] = config.getboolean(client_name,
493
529
"enabled")
494
530
531
# Uppercase and remove spaces from fingerprint for later
532
# comparison purposes with return value from the
533
# fingerprint() function
495
534
client["fingerprint"] = (section["fingerprint"].upper()
496
535
.replace(" ", ""))
497
536
if "secret" in section:
502
541
"rb") as secfile:
503
542
client["secret"] = secfile.read()
504
543
else:
505
raise TypeError("No secret or secfile for section {0}"
544
raise TypeError("No secret or secfile for section {}"
506
545
.format(section))
507
546
client["timeout"] = string_to_delta(section["timeout"])
508
547
client["extended_timeout"] = string_to_delta(
519
558
520
559
return settings
521
560
522
def __init__(self, settings, name = None):
561
def __init__(self, settings, name = None, server_settings=None):
523
562
self.name = name
563
if server_settings is None:
564
server_settings = {}
565
self.server_settings = server_settings
524
566
# adding all client settings
525
for setting, value in settings.iteritems():
567
for setting, value in settings.items():
526
568
setattr(self, setting, value)
527
569
528
570
if self.enabled:
536
578
self.expires = None
537
579
538
580
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
542
581
logger.debug(" Fingerprint: %s", self.fingerprint)
543
582
self.created = settings.get("created",
544
583
datetime.datetime.utcnow())
551
590
self.current_checker_command = None
552
591
self.approved = None
553
592
self.approvals_pending = 0
554
self.changedstate = (multiprocessing_manager
555
.Condition(multiprocessing_manager
556
.Lock()))
557
self.client_structure = [attr for attr in
558
self.__dict__.iterkeys()
593
self.changedstate = multiprocessing_manager.Condition(
594
multiprocessing_manager.Lock())
595
self.client_structure = [attr
596
for attr in self.__dict__.iterkeys()
559
597
if not attr.startswith("_")]
560
598
self.client_structure.append("client_structure")
561
599
562
for name, t in inspect.getmembers(type(self),
563
lambda obj:
564
isinstance(obj,
565
property)):
600
for name, t in inspect.getmembers(
601
type(self), lambda obj: isinstance(obj, property)):
566
602
if not name.startswith("_"):
567
603
self.client_structure.append(name)
568
604
610
646
# and every interval from then on.
611
647
if self.checker_initiator_tag is not None:
612
648
gobject.source_remove(self.checker_initiator_tag)
613
self.checker_initiator_tag = (gobject.timeout_add
614
(self.interval_milliseconds(),
615
self.start_checker))
649
self.checker_initiator_tag = gobject.timeout_add(
650
int(self.interval.total_seconds() * 1000),
651
self.start_checker)
616
652
# Schedule a disable() when 'timeout' has passed
617
653
if self.disable_initiator_tag is not None:
618
654
gobject.source_remove(self.disable_initiator_tag)
619
self.disable_initiator_tag = (gobject.timeout_add
620
(self.timeout_milliseconds(),
621
self.disable))
655
self.disable_initiator_tag = gobject.timeout_add(
656
int(self.timeout.total_seconds() * 1000), self.disable)
622
657
# Also start a new checker *right now*.
623
658
self.start_checker()
624
659
625
def checker_callback(self, pid, condition, command):
660
def checker_callback(self, source, condition, connection,
661
command):
626
662
"""The checker has completed, so take appropriate actions."""
627
663
self.checker_callback_tag = None
628
664
self.checker = None
629
if os.WIFEXITED(condition):
630
self.last_checker_status = os.WEXITSTATUS(condition)
665
# Read return code from connection (see call_pipe)
666
returncode = connection.recv()
667
connection.close()
668
669
if returncode >= 0:
670
self.last_checker_status = returncode
671
self.last_checker_signal = None
631
672
if self.last_checker_status == 0:
632
673
logger.info("Checker for %(name)s succeeded",
633
674
vars(self))
634
675
self.checked_ok()
635
676
else:
636
logger.info("Checker for %(name)s failed",
637
vars(self))
677
logger.info("Checker for %(name)s failed", vars(self))
638
678
else:
639
679
self.last_checker_status = -1
680
self.last_checker_signal = -returncode
640
681
logger.warning("Checker for %(name)s crashed?",
641
682
vars(self))
683
return False
642
684
643
685
def checked_ok(self):
644
686
"""Assert that the client has been seen, alive and well."""
645
687
self.last_checked_ok = datetime.datetime.utcnow()
646
688
self.last_checker_status = 0
689
self.last_checker_signal = None
647
690
self.bump_timeout()
648
691
649
692
def bump_timeout(self, timeout=None):
654
697
gobject.source_remove(self.disable_initiator_tag)
655
698
self.disable_initiator_tag = None
656
699
if getattr(self, "enabled", False):
657
self.disable_initiator_tag = (gobject.timeout_add
658
(timedelta_to_milliseconds
659
(timeout), self.disable))
700
self.disable_initiator_tag = gobject.timeout_add(
701
int(timeout.total_seconds() * 1000), self.disable)
660
702
self.expires = datetime.datetime.utcnow() + timeout
661
703
662
704
def need_approval(self):
676
718
# than 'timeout' for the client to be disabled, which is as it
677
719
# should be.
678
720
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)
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
692
725
# Start a new checker if needed
693
726
if self.checker is None:
694
727
# Escape attributes for the shell
695
escaped_attrs = dict(
696
(attr, re.escape(unicode(getattr(self, attr))))
697
for attr in
698
self.runtime_expansions)
728
escaped_attrs = {
729
attr: re.escape(str(getattr(self, attr)))
730
for attr in self.runtime_expansions }
699
731
try:
700
732
command = self.checker_command % escaped_attrs
701
733
except TypeError as error:
702
734
logger.error('Could not format string "%s"',
703
self.checker_command, exc_info=error)
704
return True # Try again later
735
self.checker_command,
736
exc_info=error)
737
return True # Try again later
705
738
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",
718
exc_info=error)
719
self.checker_callback_tag = (gobject.child_watch_add
720
(self.checker.pid,
721
self.checker_callback,
722
data=command))
723
# The checker may have completed before the gobject
724
# watch was added. Check for this.
725
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
726
if pid:
727
gobject.source_remove(self.checker_callback_tag)
728
self.checker_callback(pid, status, command)
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)
729
764
# Re-run this periodically if run by gobject.timeout_add
730
765
return True
731
766
737
772
if getattr(self, "checker", None) is None:
738
773
return
739
774
logger.debug("Stopping checker for %(name)s", vars(self))
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
775
self.checker.terminate()
748
776
self.checker = None
749
777
750
778
751
def dbus_service_property(dbus_interface, signature="v",
752
access="readwrite", byte_arrays=False):
779
def dbus_service_property(dbus_interface,
780
signature="v",
781
access="readwrite",
782
byte_arrays=False):
753
783
"""Decorators for marking methods of a DBusObjectWithProperties to
754
784
become properties on the D-Bus.
755
785
764
794
# "Set" method, so we fail early here:
765
795
if byte_arrays and signature != "ay":
766
796
raise ValueError("Byte arrays not supported for non-'ay'"
767
" signature {0!r}".format(signature))
797
" signature {!r}".format(signature))
798
768
799
def decorator(func):
769
800
func._dbus_is_property = True
770
801
func._dbus_interface = dbus_interface
775
806
func._dbus_name = func._dbus_name[:-14]
776
807
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
777
808
return func
809
778
810
return decorator
779
811
780
812
789
821
"org.freedesktop.DBus.Property.EmitsChangedSignal":
790
822
"false"}
791
823
"""
824
792
825
def decorator(func):
793
826
func._dbus_is_interface = True
794
827
func._dbus_interface = dbus_interface
795
828
func._dbus_name = dbus_interface
796
829
return func
830
797
831
return decorator
798
832
799
833
801
835
"""Decorator to annotate D-Bus methods, signals or properties
802
836
Usage:
803
837
838
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
839
"org.freedesktop.DBus.Property."
840
"EmitsChangedSignal": "false"})
804
841
@dbus_service_property("org.example.Interface", signature="b",
805
842
access="r")
806
@dbus_annotations({{"org.freedesktop.DBus.Deprecated": "true",
807
"org.freedesktop.DBus.Property."
808
"EmitsChangedSignal": "false"})
809
843
def Property_dbus_property(self):
810
844
return dbus.Boolean(False)
811
845
"""
846
812
847
def decorator(func):
813
848
func._dbus_annotations = annotations
814
849
return func
850
815
851
return decorator
816
852
817
853
818
854
class DBusPropertyException(dbus.exceptions.DBusException):
819
855
"""A base class for D-Bus property-related exceptions
820
856
"""
821
def __unicode__(self):
822
return unicode(str(self))
857
pass
823
858
824
859
825
860
class DBusPropertyAccessException(DBusPropertyException):
849
884
If called like _is_dbus_thing("method") it returns a function
850
885
suitable for use as predicate to inspect.getmembers().
851
886
"""
852
return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),
887
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
853
888
False)
854
889
855
890
def _get_all_dbus_things(self, thing):
856
891
"""Returns a generator of (name, attribute) pairs
857
892
"""
858
return ((getattr(athing.__get__(self), "_dbus_name",
859
name),
893
return ((getattr(athing.__get__(self), "_dbus_name", name),
860
894
athing.__get__(self))
861
895
for cls in self.__class__.__mro__
862
896
for name, athing in
863
inspect.getmembers(cls,
864
self._is_dbus_thing(thing)))
897
inspect.getmembers(cls, self._is_dbus_thing(thing)))
865
898
866
899
def _get_dbus_property(self, interface_name, property_name):
867
900
"""Returns a bound method if one exists which is a D-Bus
868
901
property with the specified name and interface.
869
902
"""
870
for cls in self.__class__.__mro__:
871
for name, value in (inspect.getmembers
872
(cls,
873
self._is_dbus_thing("property"))):
903
for cls in self.__class__.__mro__:
904
for name, value in inspect.getmembers(
905
cls, self._is_dbus_thing("property")):
874
906
if (value._dbus_name == property_name
875
907
and value._dbus_interface == interface_name):
876
908
return value.__get__(self)
877
909
878
910
# No such property
879
raise DBusPropertyNotFound(self.dbus_object_path + ":"
880
+ interface_name + "."
881
+ property_name)
911
raise DBusPropertyNotFound("{}:{}.{}".format(
912
self.dbus_object_path, interface_name, property_name))
882
913
883
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
914
@dbus.service.method(dbus.PROPERTIES_IFACE,
915
in_signature="ss",
884
916
out_signature="v")
885
917
def Get(self, interface_name, property_name):
886
918
"""Standard D-Bus property Get() method, see D-Bus standard.
904
936
# The byte_arrays option is not supported yet on
905
937
# signatures other than "ay".
906
938
if prop._dbus_signature != "ay":
907
raise ValueError
939
raise ValueError("Byte arrays not supported for non-"
940
"'ay' signature {!r}"
941
.format(prop._dbus_signature))
908
942
value = dbus.ByteArray(b''.join(chr(byte)
909
943
for byte in value))
910
944
prop(value)
911
945
912
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
946
@dbus.service.method(dbus.PROPERTIES_IFACE,
947
in_signature="s",
913
948
out_signature="a{sv}")
914
949
def GetAll(self, interface_name):
915
950
"""Standard D-Bus property GetAll() method, see D-Bus
930
965
if not hasattr(value, "variant_level"):
931
966
properties[name] = value
932
967
continue
933
properties[name] = type(value)(value, variant_level=
934
value.variant_level+1)
968
properties[name] = type(value)(
969
value, variant_level = value.variant_level + 1)
935
970
return dbus.Dictionary(properties, signature="sv")
936
971
972
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
973
def PropertiesChanged(self, interface_name, changed_properties,
974
invalidated_properties):
975
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
976
standard.
977
"""
978
pass
979
937
980
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
938
981
out_signature="s",
939
982
path_keyword='object_path',
947
990
connection)
948
991
try:
949
992
document = xml.dom.minidom.parseString(xmlstring)
993
950
994
def make_tag(document, name, prop):
951
995
e = document.createElement("property")
952
996
e.setAttribute("name", name)
953
997
e.setAttribute("type", prop._dbus_signature)
954
998
e.setAttribute("access", prop._dbus_access)
955
999
return e
1000
956
1001
for if_tag in document.getElementsByTagName("interface"):
957
1002
# Add property tags
958
1003
for tag in (make_tag(document, name, prop)
970
1015
if (name == tag.getAttribute("name")
971
1016
and prop._dbus_interface
972
1017
== if_tag.getAttribute("name")):
973
annots.update(getattr
974
(prop,
975
"_dbus_annotations",
976
{}))
977
for name, value in annots.iteritems():
1018
annots.update(getattr(
1019
prop, "_dbus_annotations", {}))
1020
for name, value in annots.items():
978
1021
ann_tag = document.createElement(
979
1022
"annotation")
980
1023
ann_tag.setAttribute("name", name)
983
1026
# Add interface annotation tags
984
1027
for annotation, value in dict(
985
1028
itertools.chain.from_iterable(
986
annotations().iteritems()
987
for name, annotations in
988
self._get_all_dbus_things("interface")
1029
annotations().items()
1030
for name, annotations
1031
in self._get_all_dbus_things("interface")
989
1032
if name == if_tag.getAttribute("name")
990
)).iteritems():
1033
)).items():
991
1034
ann_tag = document.createElement("annotation")
992
1035
ann_tag.setAttribute("name", annotation)
993
1036
ann_tag.setAttribute("value", value)
1020
1063
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1021
1064
if dt is None:
1022
1065
return dbus.String("", variant_level = variant_level)
1023
return dbus.String(dt.isoformat(),
1024
variant_level=variant_level)
1066
return dbus.String(dt.isoformat(), variant_level=variant_level)
1025
1067
1026
1068
1027
1069
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1047
1089
(from DBusObjectWithProperties) and interfaces (from the
1048
1090
dbus_interface_annotations decorator).
1049
1091
"""
1092
1050
1093
def wrapper(cls):
1051
1094
for orig_interface_name, alt_interface_name in (
1052
alt_interface_names.iteritems()):
1095
alt_interface_names.items()):
1053
1096
attr = {}
1054
1097
interface_names = set()
1055
1098
# Go though all attributes of the class
1057
1100
# Ignore non-D-Bus attributes, and D-Bus attributes
1058
1101
# with the wrong interface name
1059
1102
if (not hasattr(attribute, "_dbus_interface")
1060
or not attribute._dbus_interface
1061
.startswith(orig_interface_name)):
1103
or not attribute._dbus_interface.startswith(
1104
orig_interface_name)):
1062
1105
continue
1063
1106
# Create an alternate D-Bus interface name based on
1064
1107
# the current name
1065
alt_interface = (attribute._dbus_interface
1066
.replace(orig_interface_name,
1067
alt_interface_name))
1108
alt_interface = attribute._dbus_interface.replace(
1109
orig_interface_name, alt_interface_name)
1068
1110
interface_names.add(alt_interface)
1069
1111
# Is this a D-Bus signal?
1070
1112
if getattr(attribute, "_dbus_is_signal", False):
1071
# Extract the original non-method function by
1072
# black magic
1073
nonmethod_func = (dict(
1113
if sys.version_info.major == 2:
1114
# Extract the original non-method undecorated
1115
# function by black magic
1116
nonmethod_func = (dict(
1074
1117
zip(attribute.func_code.co_freevars,
1075
attribute.__closure__))["func"]
1076
.cell_contents)
1118
attribute.__closure__))
1119
["func"].cell_contents)
1120
else:
1121
nonmethod_func = attribute
1077
1122
# Create a new, but exactly alike, function
1078
1123
# object, and decorate it to be a new D-Bus signal
1079
1124
# with the alternate D-Bus interface name
1080
new_function = (dbus.service.signal
1081
(alt_interface,
1082
attribute._dbus_signature)
1083
(types.FunctionType(
1084
nonmethod_func.func_code,
1085
nonmethod_func.func_globals,
1086
nonmethod_func.func_name,
1087
nonmethod_func.func_defaults,
1088
nonmethod_func.func_closure)))
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))
1089
1142
# Copy annotations, if any
1090
1143
try:
1091
new_function._dbus_annotations = (
1092
dict(attribute._dbus_annotations))
1144
new_function._dbus_annotations = dict(
1145
attribute._dbus_annotations)
1093
1146
except AttributeError:
1094
1147
pass
1095
1148
# Define a creator of a function to call both the
1100
1153
"""This function is a scope container to pass
1101
1154
func1 and func2 to the "call_both" function
1102
1155
outside of its arguments"""
1156
1103
1157
def call_both(*args, **kwargs):
1104
1158
"""This function will emit two D-Bus
1105
1159
signals by calling func1 and func2"""
1106
1160
func1(*args, **kwargs)
1107
1161
func2(*args, **kwargs)
1162
1108
1163
return call_both
1109
1164
# Create the "call_both" function and add it to
1110
1165
# the class
1115
1170
# object. Decorate it to be a new D-Bus method
1116
1171
# with the alternate D-Bus interface name. Add it
1117
1172
# to the class.
1118
attr[attrname] = (dbus.service.method
1119
(alt_interface,
1120
attribute._dbus_in_signature,
1121
attribute._dbus_out_signature)
1122
(types.FunctionType
1123
(attribute.func_code,
1124
attribute.func_globals,
1125
attribute.func_name,
1126
attribute.func_defaults,
1127
attribute.func_closure)))
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)))
1128
1183
# Copy annotations, if any
1129
1184
try:
1130
attr[attrname]._dbus_annotations = (
1131
dict(attribute._dbus_annotations))
1185
attr[attrname]._dbus_annotations = dict(
1186
attribute._dbus_annotations)
1132
1187
except AttributeError:
1133
1188
pass
1134
1189
# Is this a D-Bus property?
1137
1192
# object, and decorate it to be a new D-Bus
1138
1193
# property with the alternate D-Bus interface
1139
1194
# name. Add it to the class.
1140
attr[attrname] = (dbus_service_property
1141
(alt_interface,
1142
attribute._dbus_signature,
1143
attribute._dbus_access,
1144
attribute
1145
._dbus_get_args_options
1146
["byte_arrays"])
1147
(types.FunctionType
1148
(attribute.func_code,
1149
attribute.func_globals,
1150
attribute.func_name,
1151
attribute.func_defaults,
1152
attribute.func_closure)))
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)))
1153
1206
# Copy annotations, if any
1154
1207
try:
1155
attr[attrname]._dbus_annotations = (
1156
dict(attribute._dbus_annotations))
1208
attr[attrname]._dbus_annotations = dict(
1209
attribute._dbus_annotations)
1157
1210
except AttributeError:
1158
1211
pass
1159
1212
# Is this a D-Bus interface?
1162
1215
# object. Decorate it to be a new D-Bus interface
1163
1216
# with the alternate D-Bus interface name. Add it
1164
1217
# to the class.
1165
attr[attrname] = (dbus_interface_annotations
1166
(alt_interface)
1167
(types.FunctionType
1168
(attribute.func_code,
1169
attribute.func_globals,
1170
attribute.func_name,
1171
attribute.func_defaults,
1172
attribute.func_closure)))
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)))
1173
1225
if deprecate:
1174
1226
# Deprecate all alternate interfaces
1175
iname="_AlternateDBusNames_interface_annotation{0}"
1227
iname="_AlternateDBusNames_interface_annotation{}"
1176
1228
for interface_name in interface_names:
1229
1177
1230
@dbus_interface_annotations(interface_name)
1178
1231
def func(self):
1179
1232
return { "org.freedesktop.DBus.Deprecated":
1180
"true" }
1233
"true" }
1181
1234
# Find an unused name
1182
1235
for aname in (iname.format(i)
1183
1236
for i in itertools.count()):
1187
1240
if interface_names:
1188
1241
# Replace the class with a new subclass of it with
1189
1242
# methods, signals, etc. as created above.
1190
cls = type(b"{0}Alternate".format(cls.__name__),
1191
(cls,), attr)
1243
cls = type(b"{}Alternate".format(cls.__name__),
1244
(cls, ), attr)
1192
1245
return cls
1246
1193
1247
return wrapper
1194
1248
1195
1249
1196
1250
@alternate_dbus_interfaces({"se.recompile.Mandos":
1197
"se.bsnet.fukt.Mandos"})
1251
"se.bsnet.fukt.Mandos"})
1198
1252
class ClientDBus(Client, DBusObjectWithProperties):
1199
1253
"""A Client class using D-Bus
1200
1254
1204
1258
"""
1205
1259
1206
1260
runtime_expansions = (Client.runtime_expansions
1207
+ ("dbus_object_path",))
1261
+ ("dbus_object_path", ))
1262
1263
_interface = "se.recompile.Mandos.Client"
1208
1264
1209
1265
# dbus.service.Object doesn't use super(), so we can't either.
1210
1266
1213
1269
Client.__init__(self, *args, **kwargs)
1214
1270
# Only now, when this client is initialized, can it show up on
1215
1271
# the D-Bus
1216
client_object_name = unicode(self.name).translate(
1272
client_object_name = str(self.name).translate(
1217
1273
{ord("."): ord("_"),
1218
1274
ord("-"): ord("_")})
1219
self.dbus_object_path = (dbus.ObjectPath
1220
("/clients/" + client_object_name))
1275
self.dbus_object_path = dbus.ObjectPath(
1276
"/clients/" + client_object_name)
1221
1277
DBusObjectWithProperties.__init__(self, self.bus,
1222
1278
self.dbus_object_path)
1223
1279
1224
def notifychangeproperty(transform_func,
1225
dbus_name, type_func=lambda x: x,
1226
variant_level=1):
1280
def notifychangeproperty(transform_func, dbus_name,
1281
type_func=lambda x: x,
1282
variant_level=1,
1283
invalidate_only=False,
1284
_interface=_interface):
1227
1285
""" Modify a variable so that it's a property which announces
1228
1286
its changes to DBus.
1229
1287
1234
1292
to the D-Bus. Default: no transform
1235
1293
variant_level: D-Bus variant level. Default: 1
1236
1294
"""
1237
attrname = "_{0}".format(dbus_name)
1295
attrname = "_{}".format(dbus_name)
1296
1238
1297
def setter(self, value):
1239
1298
if hasattr(self, "dbus_object_path"):
1240
1299
if (not hasattr(self, attrname) or
1241
1300
type_func(getattr(self, attrname, None))
1242
1301
!= type_func(value)):
1243
dbus_value = transform_func(type_func(value),
1244
variant_level
1245
=variant_level)
1246
self.PropertyChanged(dbus.String(dbus_name),
1247
dbus_value)
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())
1248
1317
setattr(self, attrname, value)
1249
1318
1250
1319
return property(lambda self: getattr(self, attrname), setter)
1256
1325
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1257
1326
last_enabled = notifychangeproperty(datetime_to_dbus,
1258
1327
"LastEnabled")
1259
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1260
type_func = lambda checker:
1261
checker is not None)
1328
checker = notifychangeproperty(
1329
dbus.Boolean, "CheckerRunning",
1330
type_func = lambda checker: checker is not None)
1262
1331
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1263
1332
"LastCheckedOK")
1264
1333
last_checker_status = notifychangeproperty(dbus.Int16,
1267
1336
datetime_to_dbus, "LastApprovalRequest")
1268
1337
approved_by_default = notifychangeproperty(dbus.Boolean,
1269
1338
"ApprovedByDefault")
1270
approval_delay = notifychangeproperty(dbus.UInt64,
1271
"ApprovalDelay",
1272
type_func =
1273
timedelta_to_milliseconds)
1339
approval_delay = notifychangeproperty(
1340
dbus.UInt64, "ApprovalDelay",
1341
type_func = lambda td: td.total_seconds() * 1000)
1274
1342
approval_duration = notifychangeproperty(
1275
1343
dbus.UInt64, "ApprovalDuration",
1276
type_func = timedelta_to_milliseconds)
1344
type_func = lambda td: td.total_seconds() * 1000)
1277
1345
host = notifychangeproperty(dbus.String, "Host")
1278
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1279
type_func =
1280
timedelta_to_milliseconds)
1346
timeout = notifychangeproperty(
1347
dbus.UInt64, "Timeout",
1348
type_func = lambda td: td.total_seconds() * 1000)
1281
1349
extended_timeout = notifychangeproperty(
1282
1350
dbus.UInt64, "ExtendedTimeout",
1283
type_func = timedelta_to_milliseconds)
1284
interval = notifychangeproperty(dbus.UInt64,
1285
"Interval",
1286
type_func =
1287
timedelta_to_milliseconds)
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)
1288
1355
checker_command = notifychangeproperty(dbus.String, "Checker")
1356
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1357
invalidate_only=True)
1289
1358
1290
1359
del notifychangeproperty
1291
1360
1298
1367
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1299
1368
Client.__del__(self, *args, **kwargs)
1300
1369
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)
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:
1307
1377
# Emit D-Bus signal
1308
1378
self.CheckerCompleted(dbus.Int16(exitstatus),
1309
dbus.Int64(condition),
1379
dbus.Int64(0),
1310
1380
dbus.String(command))
1311
1381
else:
1312
1382
# Emit D-Bus signal
1313
1383
self.CheckerCompleted(dbus.Int16(-1),
1314
dbus.Int64(condition),
1384
dbus.Int64(
1385
self.last_checker_signal),
1315
1386
dbus.String(command))
1316
1317
return Client.checker_callback(self, pid, condition, command,
1318
*args, **kwargs)
1387
return ret
1319
1388
1320
1389
def start_checker(self, *args, **kwargs):
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
1390
old_checker_pid = getattr(self.checker, "pid", None)
1326
1391
r = Client.start_checker(self, *args, **kwargs)
1327
1392
# Only if new checker process was started
1328
1393
if (self.checker is not None
1337
1402
1338
1403
def approve(self, value=True):
1339
1404
self.approved = value
1340
gobject.timeout_add(timedelta_to_milliseconds
1341
(self.approval_duration),
1342
self._reset_approved)
1405
gobject.timeout_add(int(self.approval_duration.total_seconds()
1406
* 1000), self._reset_approved)
1343
1407
self.send_changedstate()
1344
1408
1345
1409
## D-Bus methods, signals & properties
1346
_interface = "se.recompile.Mandos.Client"
1347
1410
1348
1411
## Interfaces
1349
1412
1350
@dbus_interface_annotations(_interface)
1351
def _foo(self):
1352
return { "org.freedesktop.DBus.Property.EmitsChangedSignal":
1353
"false"}
1354
1355
1413
## Signals
1356
1414
1357
1415
# CheckerCompleted - signal
1367
1425
pass
1368
1426
1369
1427
# PropertyChanged - signal
1428
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1370
1429
@dbus.service.signal(_interface, signature="sv")
1371
1430
def PropertyChanged(self, property, value):
1372
1431
"D-Bus signal"
1436
1495
return dbus.Boolean(bool(self.approvals_pending))
1437
1496
1438
1497
# ApprovedByDefault - property
1439
@dbus_service_property(_interface, signature="b",
1498
@dbus_service_property(_interface,
1499
signature="b",
1440
1500
access="readwrite")
1441
1501
def ApprovedByDefault_dbus_property(self, value=None):
1442
1502
if value is None: # get
1444
1504
self.approved_by_default = bool(value)
1445
1505
1446
1506
# ApprovalDelay - property
1447
@dbus_service_property(_interface, signature="t",
1507
@dbus_service_property(_interface,
1508
signature="t",
1448
1509
access="readwrite")
1449
1510
def ApprovalDelay_dbus_property(self, value=None):
1450
1511
if value is None: # get
1451
return dbus.UInt64(self.approval_delay_milliseconds())
1512
return dbus.UInt64(self.approval_delay.total_seconds()
1513
* 1000)
1452
1514
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1453
1515
1454
1516
# ApprovalDuration - property
1455
@dbus_service_property(_interface, signature="t",
1517
@dbus_service_property(_interface,
1518
signature="t",
1456
1519
access="readwrite")
1457
1520
def ApprovalDuration_dbus_property(self, value=None):
1458
1521
if value is None: # get
1459
return dbus.UInt64(timedelta_to_milliseconds(
1460
self.approval_duration))
1522
return dbus.UInt64(self.approval_duration.total_seconds()
1523
* 1000)
1461
1524
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1462
1525
1463
1526
# Name - property
1471
1534
return dbus.String(self.fingerprint)
1472
1535
1473
1536
# Host - property
1474
@dbus_service_property(_interface, signature="s",
1537
@dbus_service_property(_interface,
1538
signature="s",
1475
1539
access="readwrite")
1476
1540
def Host_dbus_property(self, value=None):
1477
1541
if value is None: # get
1478
1542
return dbus.String(self.host)
1479
self.host = unicode(value)
1543
self.host = str(value)
1480
1544
1481
1545
# Created - property
1482
1546
@dbus_service_property(_interface, signature="s", access="read")
1489
1553
return datetime_to_dbus(self.last_enabled)
1490
1554
1491
1555
# Enabled - property
1492
@dbus_service_property(_interface, signature="b",
1556
@dbus_service_property(_interface,
1557
signature="b",
1493
1558
access="readwrite")
1494
1559
def Enabled_dbus_property(self, value=None):
1495
1560
if value is None: # get
1500
1565
self.disable()
1501
1566
1502
1567
# LastCheckedOK - property
1503
@dbus_service_property(_interface, signature="s",
1568
@dbus_service_property(_interface,
1569
signature="s",
1504
1570
access="readwrite")
1505
1571
def LastCheckedOK_dbus_property(self, value=None):
1506
1572
if value is not None:
1509
1575
return datetime_to_dbus(self.last_checked_ok)
1510
1576
1511
1577
# LastCheckerStatus - property
1512
@dbus_service_property(_interface, signature="n",
1513
access="read")
1578
@dbus_service_property(_interface, signature="n", access="read")
1514
1579
def LastCheckerStatus_dbus_property(self):
1515
1580
return dbus.Int16(self.last_checker_status)
1516
1581
1525
1590
return datetime_to_dbus(self.last_approval_request)
1526
1591
1527
1592
# Timeout - property
1528
@dbus_service_property(_interface, signature="t",
1593
@dbus_service_property(_interface,
1594
signature="t",
1529
1595
access="readwrite")
1530
1596
def Timeout_dbus_property(self, value=None):
1531
1597
if value is None: # get
1532
return dbus.UInt64(self.timeout_milliseconds())
1598
return dbus.UInt64(self.timeout.total_seconds() * 1000)
1533
1599
old_timeout = self.timeout
1534
1600
self.timeout = datetime.timedelta(0, 0, 0, value)
1535
1601
# Reschedule disabling
1544
1610
is None):
1545
1611
return
1546
1612
gobject.source_remove(self.disable_initiator_tag)
1547
self.disable_initiator_tag = (
1548
gobject.timeout_add(
1549
timedelta_to_milliseconds(self.expires - now),
1550
self.disable))
1613
self.disable_initiator_tag = gobject.timeout_add(
1614
int((self.expires - now).total_seconds() * 1000),
1615
self.disable)
1551
1616
1552
1617
# ExtendedTimeout - property
1553
@dbus_service_property(_interface, signature="t",
1618
@dbus_service_property(_interface,
1619
signature="t",
1554
1620
access="readwrite")
1555
1621
def ExtendedTimeout_dbus_property(self, value=None):
1556
1622
if value is None: # get
1557
return dbus.UInt64(self.extended_timeout_milliseconds())
1623
return dbus.UInt64(self.extended_timeout.total_seconds()
1624
* 1000)
1558
1625
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1559
1626
1560
1627
# Interval - property
1561
@dbus_service_property(_interface, signature="t",
1628
@dbus_service_property(_interface,
1629
signature="t",
1562
1630
access="readwrite")
1563
1631
def Interval_dbus_property(self, value=None):
1564
1632
if value is None: # get
1565
return dbus.UInt64(self.interval_milliseconds())
1633
return dbus.UInt64(self.interval.total_seconds() * 1000)
1566
1634
self.interval = datetime.timedelta(0, 0, 0, value)
1567
1635
if getattr(self, "checker_initiator_tag", None) is None:
1568
1636
return
1569
1637
if self.enabled:
1570
1638
# Reschedule checker run
1571
1639
gobject.source_remove(self.checker_initiator_tag)
1572
self.checker_initiator_tag = (gobject.timeout_add
1573
(value, self.start_checker))
1574
self.start_checker() # Start one now, too
1640
self.checker_initiator_tag = gobject.timeout_add(
1641
value, self.start_checker)
1642
self.start_checker() # Start one now, too
1575
1643
1576
1644
# Checker - property
1577
@dbus_service_property(_interface, signature="s",
1645
@dbus_service_property(_interface,
1646
signature="s",
1578
1647
access="readwrite")
1579
1648
def Checker_dbus_property(self, value=None):
1580
1649
if value is None: # get
1581
1650
return dbus.String(self.checker_command)
1582
self.checker_command = unicode(value)
1651
self.checker_command = str(value)
1583
1652
1584
1653
# CheckerRunning - property
1585
@dbus_service_property(_interface, signature="b",
1654
@dbus_service_property(_interface,
1655
signature="b",
1586
1656
access="readwrite")
1587
1657
def CheckerRunning_dbus_property(self, value=None):
1588
1658
if value is None: # get
1598
1668
return self.dbus_object_path # is already a dbus.ObjectPath
1599
1669
1600
1670
# Secret = property
1601
@dbus_service_property(_interface, signature="ay",
1602
access="write", byte_arrays=True)
1671
@dbus_service_property(_interface,
1672
signature="ay",
1673
access="write",
1674
byte_arrays=True)
1603
1675
def Secret_dbus_property(self, value):
1604
self.secret = str(value)
1676
self.secret = bytes(value)
1605
1677
1606
1678
del _interface
1607
1679
1611
1683
self._pipe = child_pipe
1612
1684
self._pipe.send(('init', fpr, address))
1613
1685
if not self._pipe.recv():
1614
raise KeyError()
1686
raise KeyError(fpr)
1615
1687
1616
1688
def __getattribute__(self, name):
1617
1689
if name == '_pipe':
1621
1693
if data[0] == 'data':
1622
1694
return data[1]
1623
1695
if data[0] == 'function':
1696
1624
1697
def func(*args, **kwargs):
1625
1698
self._pipe.send(('funcall', name, args, kwargs))
1626
1699
return self._pipe.recv()[1]
1700
1627
1701
return func
1628
1702
1629
1703
def __setattr__(self, name, value):
1641
1715
def handle(self):
1642
1716
with contextlib.closing(self.server.child_pipe) as child_pipe:
1643
1717
logger.info("TCP connection from: %s",
1644
unicode(self.client_address))
1718
str(self.client_address))
1645
1719
logger.debug("Pipe FD: %d",
1646
1720
self.server.child_pipe.fileno())
1647
1721
1648
session = (gnutls.connection
1649
.ClientSession(self.request,
1650
gnutls.connection
1651
.X509Credentials()))
1722
session = gnutls.connection.ClientSession(
1723
self.request, gnutls.connection .X509Credentials())
1652
1724
1653
1725
# Note: gnutls.connection.X509Credentials is really a
1654
1726
# generic GnuTLS certificate credentials object so long as
1663
1735
priority = self.server.gnutls_priority
1664
1736
if priority is None:
1665
1737
priority = "NORMAL"
1666
(gnutls.library.functions
1667
.gnutls_priority_set_direct(session._c_object,
1668
priority, None))
1738
gnutls.library.functions.gnutls_priority_set_direct(
1739
session._c_object, priority, None)
1669
1740
1670
1741
# Start communication using the Mandos protocol
1671
1742
# Get protocol number
1673
1744
logger.debug("Protocol version: %r", line)
1674
1745
try:
1675
1746
if int(line.strip().split()[0]) > 1:
1676
raise RuntimeError
1747
raise RuntimeError(line)
1677
1748
except (ValueError, IndexError, RuntimeError) as error:
1678
1749
logger.error("Unknown protocol version: %s", error)
1679
1750
return
1691
1762
approval_required = False
1692
1763
try:
1693
1764
try:
1694
fpr = self.fingerprint(self.peer_certificate
1695
(session))
1765
fpr = self.fingerprint(
1766
self.peer_certificate(session))
1696
1767
except (TypeError,
1697
1768
gnutls.errors.GNUTLSError) as error:
1698
1769
logger.warning("Bad certificate: %s", error)
1713
1784
while True:
1714
1785
if not client.enabled:
1715
1786
logger.info("Client %s is disabled",
1716
client.name)
1787
client.name)
1717
1788
if self.server.use_dbus:
1718
1789
# Emit D-Bus signal
1719
1790
client.Rejected("Disabled")
1728
1799
if self.server.use_dbus:
1729
1800
# Emit D-Bus signal
1730
1801
client.NeedApproval(
1731
client.approval_delay_milliseconds(),
1732
client.approved_by_default)
1802
client.approval_delay.total_seconds()
1803
* 1000, client.approved_by_default)
1733
1804
else:
1734
1805
logger.warning("Client %s was not approved",
1735
1806
client.name)
1741
1812
#wait until timeout or approved
1742
1813
time = datetime.datetime.now()
1743
1814
client.changedstate.acquire()
1744
client.changedstate.wait(
1745
float(timedelta_to_milliseconds(delay)
1746
/ 1000))
1815
client.changedstate.wait(delay.total_seconds())
1747
1816
client.changedstate.release()
1748
1817
time2 = datetime.datetime.now()
1749
1818
if (time2 - time) >= delay:
1768
1837
logger.warning("gnutls send failed",
1769
1838
exc_info=error)
1770
1839
return
1771
logger.debug("Sent: %d, remaining: %d",
1772
sent, len(client.secret)
1773
- (sent_size + sent))
1840
logger.debug("Sent: %d, remaining: %d", sent,
1841
len(client.secret) - (sent_size
1842
+ sent))
1774
1843
sent_size += sent
1775
1844
1776
1845
logger.info("Sending secret to %s", client.name)
1793
1862
def peer_certificate(session):
1794
1863
"Return the peer's OpenPGP certificate as a bytestring"
1795
1864
# If not an OpenPGP certificate...
1796
if (gnutls.library.functions
1797
.gnutls_certificate_type_get(session._c_object)
1865
if (gnutls.library.functions.gnutls_certificate_type_get(
1866
session._c_object)
1798
1867
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1799
1868
# ...do the normal thing
1800
1869
return session.peer_certificate
1814
1883
def fingerprint(openpgp):
1815
1884
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1816
1885
# New GnuTLS "datum" with the OpenPGP public key
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))))
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)))
1822
1890
# New empty GnuTLS certificate
1823
1891
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1824
(gnutls.library.functions
1825
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
1892
gnutls.library.functions.gnutls_openpgp_crt_init(
1893
ctypes.byref(crt))
1826
1894
# Import the OpenPGP public key into the certificate
1827
(gnutls.library.functions
1828
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1829
gnutls.library.constants
1830
.GNUTLS_OPENPGP_FMT_RAW))
1895
gnutls.library.functions.gnutls_openpgp_crt_import(
1896
crt, ctypes.byref(datum),
1897
gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)
1831
1898
# Verify the self signature in the key
1832
1899
crtverify = ctypes.c_uint()
1833
(gnutls.library.functions
1834
.gnutls_openpgp_crt_verify_self(crt, 0,
1835
ctypes.byref(crtverify)))
1900
gnutls.library.functions.gnutls_openpgp_crt_verify_self(
1901
crt, 0, ctypes.byref(crtverify))
1836
1902
if crtverify.value != 0:
1837
1903
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1838
raise (gnutls.errors.CertificateSecurityError
1839
("Verify failed"))
1904
raise gnutls.errors.CertificateSecurityError(
1905
"Verify failed")
1840
1906
# New buffer for the fingerprint
1841
1907
buf = ctypes.create_string_buffer(20)
1842
1908
buf_len = ctypes.c_size_t()
1843
1909
# Get the fingerprint from the certificate into the buffer
1844
(gnutls.library.functions
1845
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1846
ctypes.byref(buf_len)))
1910
gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint(
1911
crt, ctypes.byref(buf), ctypes.byref(buf_len))
1847
1912
# Deinit the certificate
1848
1913
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1849
1914
# Convert the buffer to a Python bytestring
1855
1920
1856
1921
class MultiprocessingMixIn(object):
1857
1922
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
1923
1858
1924
def sub_process_main(self, request, address):
1859
1925
try:
1860
1926
self.finish_request(request, address)
1872
1938
1873
1939
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1874
1940
""" adds a pipe to the MixIn """
1941
1875
1942
def process_request(self, request, client_address):
1876
1943
"""Overrides and wraps the original process_request().
1877
1944
1886
1953
1887
1954
def add_pipe(self, parent_pipe, proc):
1888
1955
"""Dummy function; override as necessary"""
1889
raise NotImplementedError
1956
raise NotImplementedError()
1890
1957
1891
1958
1892
1959
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1898
1965
interface: None or a network interface name (string)
1899
1966
use_ipv6: Boolean; to use IPv6 or not
1900
1967
"""
1968
1901
1969
def __init__(self, server_address, RequestHandlerClass,
1902
interface=None, use_ipv6=True, socketfd=None):
1970
interface=None,
1971
use_ipv6=True,
1972
socketfd=None):
1903
1973
"""If socketfd is set, use that file descriptor instead of
1904
1974
creating a new one with socket.socket().
1905
1975
"""
1946
2016
self.interface)
1947
2017
else:
1948
2018
try:
1949
self.socket.setsockopt(socket.SOL_SOCKET,
1950
SO_BINDTODEVICE,
1951
str(self.interface + '\0'))
2019
self.socket.setsockopt(
2020
socket.SOL_SOCKET, SO_BINDTODEVICE,
2021
(self.interface + "\0").encode("utf-8"))
1952
2022
except socket.error as error:
1953
2023
if error.errno == errno.EPERM:
1954
2024
logger.error("No permission to bind to"
1968
2038
if self.address_family == socket.AF_INET6:
1969
2039
any_address = "::" # in6addr_any
1970
2040
else:
1971
any_address = socket.INADDR_ANY
2041
any_address = "0.0.0.0" # INADDR_ANY
1972
2042
self.server_address = (any_address,
1973
2043
self.server_address[1])
1974
2044
elif not self.server_address[1]:
1975
self.server_address = (self.server_address[0],
1976
0)
2045
self.server_address = (self.server_address[0], 0)
1977
2046
# if self.interface:
1978
2047
# self.server_address = (self.server_address[0],
1979
2048
# 0, # port
1993
2062
1994
2063
Assumes a gobject.MainLoop event loop.
1995
2064
"""
2065
1996
2066
def __init__(self, server_address, RequestHandlerClass,
1997
interface=None, use_ipv6=True, clients=None,
1998
gnutls_priority=None, use_dbus=True, socketfd=None):
2067
interface=None,
2068
use_ipv6=True,
2069
clients=None,
2070
gnutls_priority=None,
2071
use_dbus=True,
2072
socketfd=None):
1999
2073
self.enabled = False
2000
2074
self.clients = clients
2001
2075
if self.clients is None:
2007
2081
interface = interface,
2008
2082
use_ipv6 = use_ipv6,
2009
2083
socketfd = socketfd)
2084
2010
2085
def server_activate(self):
2011
2086
if self.enabled:
2012
2087
return socketserver.TCPServer.server_activate(self)
2016
2091
2017
2092
def add_pipe(self, parent_pipe, proc):
2018
2093
# Call "handle_ipc" for both data and EOF events
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))
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))
2025
2100
2026
def handle_ipc(self, source, condition, parent_pipe=None,
2027
proc = None, client_object=None):
2101
def handle_ipc(self, source, condition,
2102
parent_pipe=None,
2103
proc = None,
2104
client_object=None):
2028
2105
# error, or the other end of multiprocessing.Pipe has closed
2029
2106
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2030
2107
# Wait for other process to exit
2053
2130
parent_pipe.send(False)
2054
2131
return False
2055
2132
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))
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))
2064
2140
parent_pipe.send(True)
2065
2141
# remove the old hook in favor of the new above hook on
2066
2142
# same fileno
2072
2148
2073
2149
parent_pipe.send(('data', getattr(client_object,
2074
2150
funcname)(*args,
2075
**kwargs)))
2151
**kwargs)))
2076
2152
2077
2153
if command == 'getattr':
2078
2154
attrname = request[1]
2079
if callable(client_object.__getattribute__(attrname)):
2080
parent_pipe.send(('function',))
2155
if isinstance(client_object.__getattribute__(attrname),
2156
collections.Callable):
2157
parent_pipe.send(('function', ))
2081
2158
else:
2082
parent_pipe.send(('data', client_object
2083
.__getattribute__(attrname)))
2159
parent_pipe.send((
2160
'data', client_object.__getattribute__(attrname)))
2084
2161
2085
2162
if command == 'setattr':
2086
2163
attrname = request[1]
2090
2167
return True
2091
2168
2092
2169
2170
def rfc3339_duration_to_delta(duration):
2171
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2172
2173
>>> rfc3339_duration_to_delta("P7D")
2174
datetime.timedelta(7)
2175
>>> rfc3339_duration_to_delta("PT60S")
2176
datetime.timedelta(0, 60)
2177
>>> rfc3339_duration_to_delta("PT60M")
2178
datetime.timedelta(0, 3600)
2179
>>> rfc3339_duration_to_delta("PT24H")
2180
datetime.timedelta(1)
2181
>>> rfc3339_duration_to_delta("P1W")
2182
datetime.timedelta(7)
2183
>>> rfc3339_duration_to_delta("PT5M30S")
2184
datetime.timedelta(0, 330)
2185
>>> rfc3339_duration_to_delta("P1DT3M20S")
2186
datetime.timedelta(1, 200)
2187
"""
2188
2189
# Parsing an RFC 3339 duration with regular expressions is not
2190
# possible - there would have to be multiple places for the same
2191
# values, like seconds. The current code, while more esoteric, is
2192
# cleaner without depending on a parsing library. If Python had a
2193
# built-in library for parsing we would use it, but we'd like to
2194
# avoid excessive use of external libraries.
2195
2196
# New type for defining tokens, syntax, and semantics all-in-one
2197
Token = collections.namedtuple("Token", (
2198
"regexp", # To match token; if "value" is not None, must have
2199
# a "group" containing digits
2200
"value", # datetime.timedelta or None
2201
"followers")) # Tokens valid after this token
2202
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2203
# the "duration" ABNF definition in RFC 3339, Appendix A.
2204
token_end = Token(re.compile(r"$"), None, frozenset())
2205
token_second = Token(re.compile(r"(\d+)S"),
2206
datetime.timedelta(seconds=1),
2207
frozenset((token_end, )))
2208
token_minute = Token(re.compile(r"(\d+)M"),
2209
datetime.timedelta(minutes=1),
2210
frozenset((token_second, token_end)))
2211
token_hour = Token(re.compile(r"(\d+)H"),
2212
datetime.timedelta(hours=1),
2213
frozenset((token_minute, token_end)))
2214
token_time = Token(re.compile(r"T"),
2215
None,
2216
frozenset((token_hour, token_minute,
2217
token_second)))
2218
token_day = Token(re.compile(r"(\d+)D"),
2219
datetime.timedelta(days=1),
2220
frozenset((token_time, token_end)))
2221
token_month = Token(re.compile(r"(\d+)M"),
2222
datetime.timedelta(weeks=4),
2223
frozenset((token_day, token_end)))
2224
token_year = Token(re.compile(r"(\d+)Y"),
2225
datetime.timedelta(weeks=52),
2226
frozenset((token_month, token_end)))
2227
token_week = Token(re.compile(r"(\d+)W"),
2228
datetime.timedelta(weeks=1),
2229
frozenset((token_end, )))
2230
token_duration = Token(re.compile(r"P"), None,
2231
frozenset((token_year, token_month,
2232
token_day, token_time,
2233
token_week)))
2234
# Define starting values
2235
value = datetime.timedelta() # Value so far
2236
found_token = None
2237
followers = frozenset((token_duration, )) # Following valid tokens
2238
s = duration # String left to parse
2239
# Loop until end token is found
2240
while found_token is not token_end:
2241
# Search for any currently valid tokens
2242
for token in followers:
2243
match = token.regexp.match(s)
2244
if match is not None:
2245
# Token found
2246
if token.value is not None:
2247
# Value found, parse digits
2248
factor = int(match.group(1), 10)
2249
# Add to value so far
2250
value += factor * token.value
2251
# Strip token from string
2252
s = token.regexp.sub("", s, 1)
2253
# Go to found token
2254
found_token = token
2255
# Set valid next tokens
2256
followers = found_token.followers
2257
break
2258
else:
2259
# No currently valid tokens were found
2260
raise ValueError("Invalid RFC 3339 duration: {!r}"
2261
.format(duration))
2262
# End token found
2263
return value
2264
2265
2093
2266
def string_to_delta(interval):
2094
2267
"""Parse a string and return a datetime.timedelta
2095
2268
2106
2279
>>> string_to_delta('5m 30s')
2107
2280
datetime.timedelta(0, 330)
2108
2281
"""
2282
2283
try:
2284
return rfc3339_duration_to_delta(interval)
2285
except ValueError:
2286
pass
2287
2109
2288
timevalue = datetime.timedelta(0)
2110
2289
for s in interval.split():
2111
2290
try:
2112
suffix = unicode(s[-1])
2291
suffix = s[-1]
2113
2292
value = int(s[:-1])
2114
2293
if suffix == "d":
2115
2294
delta = datetime.timedelta(value)
2122
2301
elif suffix == "w":
2123
2302
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2124
2303
else:
2125
raise ValueError("Unknown suffix {0!r}"
2126
.format(suffix))
2127
except (ValueError, IndexError) as e:
2304
raise ValueError("Unknown suffix {!r}".format(suffix))
2305
except IndexError as e:
2128
2306
raise ValueError(*(e.args))
2129
2307
timevalue += delta
2130
2308
return timevalue
2146
2324
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2147
2325
if not stat.S_ISCHR(os.fstat(null).st_mode):
2148
2326
raise OSError(errno.ENODEV,
2149
"{0} not a character device"
2327
"{} not a character device"
2150
2328
.format(os.devnull))
2151
2329
os.dup2(null, sys.stdin.fileno())
2152
2330
os.dup2(null, sys.stdout.fileno())
2162
2340
2163
2341
parser = argparse.ArgumentParser()
2164
2342
parser.add_argument("-v", "--version", action="version",
2165
version = "%(prog)s {0}".format(version),
2343
version = "%(prog)s {}".format(version),
2166
2344
help="show version number and exit")
2167
2345
parser.add_argument("-i", "--interface", metavar="IF",
2168
2346
help="Bind to interface IF")
2174
2352
help="Run self-test")
2175
2353
parser.add_argument("--debug", action="store_true",
2176
2354
help="Debug mode; run in foreground and log"
2177
" to terminal")
2355
" to terminal", default=None)
2178
2356
parser.add_argument("--debuglevel", metavar="LEVEL",
2179
2357
help="Debug level for stdout output")
2180
2358
parser.add_argument("--priority", help="GnuTLS"
2187
2365
" files")
2188
2366
parser.add_argument("--no-dbus", action="store_false",
2189
2367
dest="use_dbus", help="Do not provide D-Bus"
2190
" system bus interface")
2368
" system bus interface", default=None)
2191
2369
parser.add_argument("--no-ipv6", action="store_false",
2192
dest="use_ipv6", help="Do not use IPv6")
2370
dest="use_ipv6", help="Do not use IPv6",
2371
default=None)
2193
2372
parser.add_argument("--no-restore", action="store_false",
2194
2373
dest="restore", help="Do not restore stored"
2195
" state")
2374
" state", default=None)
2196
2375
parser.add_argument("--socket", type=int,
2197
2376
help="Specify a file descriptor to a network"
2198
2377
" socket to use instead of creating one")
2199
2378
parser.add_argument("--statedir", metavar="DIR",
2200
2379
help="Directory to save/restore state in")
2201
2380
parser.add_argument("--foreground", action="store_true",
2202
help="Run in foreground")
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)
2203
2385
2204
2386
options = parser.parse_args()
2205
2387
2206
2388
if options.check:
2207
2389
import doctest
2208
doctest.testmod()
2209
sys.exit()
2390
fail_count, test_count = doctest.testmod()
2391
sys.exit(os.EX_OK if fail_count == 0 else 1)
2210
2392
2211
2393
# Default values for config file for server-global settings
2212
2394
server_defaults = { "interface": "",
2214
2396
"port": "",
2215
2397
"debug": "False",
2216
2398
"priority":
2217
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2399
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2400
":+SIGN-RSA-SHA224:+SIGN-RSA-RMD160",
2218
2401
"servicename": "Mandos",
2219
2402
"use_dbus": "True",
2220
2403
"use_ipv6": "True",
2223
2406
"socket": "",
2224
2407
"statedir": "/var/lib/mandos",
2225
2408
"foreground": "False",
2226
}
2409
"zeroconf": "True",
2410
}
2227
2411
2228
2412
# Parse config file for server-global settings
2229
2413
server_config = configparser.SafeConfigParser(server_defaults)
2230
2414
del server_defaults
2231
server_config.read(os.path.join(options.configdir,
2232
"mandos.conf"))
2415
server_config.read(os.path.join(options.configdir, "mandos.conf"))
2233
2416
# Convert the SafeConfigParser object to a dict
2234
2417
server_settings = server_config.defaults()
2235
2418
# Use the appropriate methods on the non-string config options
2253
2436
# Override the settings from the config file with command line
2254
2437
# options, if set.
2255
2438
for option in ("interface", "address", "port", "debug",
2256
"priority", "servicename", "configdir",
2257
"use_dbus", "use_ipv6", "debuglevel", "restore",
2258
"statedir", "socket", "foreground"):
2439
"priority", "servicename", "configdir", "use_dbus",
2440
"use_ipv6", "debuglevel", "restore", "statedir",
2441
"socket", "foreground", "zeroconf"):
2259
2442
value = getattr(options, option)
2260
2443
if value is not None:
2261
2444
server_settings[option] = value
2262
2445
del options
2263
2446
# Force all strings to be unicode
2264
2447
for option in server_settings.keys():
2265
if type(server_settings[option]) is str:
2266
server_settings[option] = unicode(server_settings[option])
2448
if isinstance(server_settings[option], bytes):
2449
server_settings[option] = (server_settings[option]
2450
.decode("utf-8"))
2451
# Force all boolean options to be boolean
2452
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2453
"foreground", "zeroconf"):
2454
server_settings[option] = bool(server_settings[option])
2267
2455
# Debug implies foreground
2268
2456
if server_settings["debug"]:
2269
2457
server_settings["foreground"] = True
2271
2459
2272
2460
##################################################################
2273
2461
2462
if (not server_settings["zeroconf"]
2463
and not (server_settings["port"]
2464
or server_settings["socket"] != "")):
2465
parser.error("Needs port or socket to work without Zeroconf")
2466
2274
2467
# For convenience
2275
2468
debug = server_settings["debug"]
2276
2469
debuglevel = server_settings["debuglevel"]
2279
2472
stored_state_path = os.path.join(server_settings["statedir"],
2280
2473
stored_state_file)
2281
2474
foreground = server_settings["foreground"]
2475
zeroconf = server_settings["zeroconf"]
2282
2476
2283
2477
if debug:
2284
2478
initlogger(debug, logging.DEBUG)
2290
2484
initlogger(debug, level)
2291
2485
2292
2486
if server_settings["servicename"] != "Mandos":
2293
syslogger.setFormatter(logging.Formatter
2294
('Mandos ({0}) [%(process)d]:'
2295
' %(levelname)s: %(message)s'
2296
.format(server_settings
2297
["servicename"])))
2487
syslogger.setFormatter(
2488
logging.Formatter('Mandos ({}) [%(process)d]:'
2489
' %(levelname)s: %(message)s'.format(
2490
server_settings["servicename"])))
2298
2491
2299
2492
# Parse config file with clients
2300
2493
client_config = configparser.SafeConfigParser(Client
2305
2498
global mandos_dbus_service
2306
2499
mandos_dbus_service = None
2307
2500
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))
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)
2319
2512
if not foreground:
2320
pidfilename = "/var/run/mandos.pid"
2513
pidfilename = "/run/mandos.pid"
2514
if not os.path.isdir("/run/."):
2515
pidfilename = "/var/run/mandos.pid"
2321
2516
pidfile = None
2322
2517
try:
2323
pidfile = open(pidfilename, "w")
2518
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2324
2519
except IOError as e:
2325
2520
logger.error("Could not open file %r", pidfilename,
2326
2521
exc_info=e)
2340
2535
os.setuid(uid)
2341
2536
except OSError as error:
2342
2537
if error.errno != errno.EPERM:
2343
raise error
2538
raise
2344
2539
2345
2540
if debug:
2346
2541
# Enable all possible GnuTLS debugging
2353
2548
def debug_gnutls(level, string):
2354
2549
logger.debug("GnuTLS: %s", string[:-1])
2355
2550
2356
(gnutls.library.functions
2357
.gnutls_global_set_log_function(debug_gnutls))
2551
gnutls.library.functions.gnutls_global_set_log_function(
2552
debug_gnutls)
2358
2553
2359
2554
# Redirect stdin so all checkers get /dev/null
2360
2555
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2380
2575
if use_dbus:
2381
2576
try:
2382
2577
bus_name = dbus.service.BusName("se.recompile.Mandos",
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:
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:
2388
2584
logger.error("Disabling D-Bus:", exc_info=e)
2389
2585
use_dbus = False
2390
2586
server_settings["use_dbus"] = False
2391
2587
tcp_server.use_dbus = False
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"])))
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"))
2400
2598
2401
2599
global multiprocessing_manager
2402
2600
multiprocessing_manager = multiprocessing.Manager()
2409
2607
old_client_settings = {}
2410
2608
clients_data = {}
2411
2609
2610
# This is used to redirect stdout and stderr for checker processes
2611
global wnull
2612
wnull = open(os.devnull, "w") # A writable /dev/null
2613
# Only used if server is running in foreground but not in debug
2614
# mode
2615
if debug or not foreground:
2616
wnull.close()
2617
2412
2618
# Get client data and settings from last running state.
2413
2619
if server_settings["restore"]:
2414
2620
try:
2415
2621
with open(stored_state_path, "rb") as stored_state:
2416
clients_data, old_client_settings = (pickle.load
2417
(stored_state))
2622
clients_data, old_client_settings = pickle.load(
2623
stored_state)
2418
2624
os.remove(stored_state_path)
2419
2625
except IOError as e:
2420
2626
if e.errno == errno.ENOENT:
2421
logger.warning("Could not load persistent state: {0}"
2422
.format(os.strerror(e.errno)))
2627
logger.warning("Could not load persistent state:"
2628
" {}".format(os.strerror(e.errno)))
2423
2629
else:
2424
2630
logger.critical("Could not load persistent state:",
2425
2631
exc_info=e)
2426
2632
raise
2427
2633
except EOFError as e:
2428
2634
logger.warning("Could not load persistent state: "
2429
"EOFError:", exc_info=e)
2635
"EOFError:",
2636
exc_info=e)
2430
2637
2431
2638
with PGPEngine() as pgp:
2432
for client_name, client in clients_data.iteritems():
2639
for client_name, client in clients_data.items():
2640
# Skip removed clients
2641
if client_name not in client_settings:
2642
continue
2643
2433
2644
# Decide which value to use after restoring saved state.
2434
2645
# We have three different values: Old config file,
2435
2646
# new config file, and saved state.
2440
2651
# For each value in new config, check if it
2441
2652
# differs from the old config value (Except for
2442
2653
# the "secret" attribute)
2443
if (name != "secret" and
2444
value != old_client_settings[client_name]
2445
[name]):
2654
if (name != "secret"
2655
and (value !=
2656
old_client_settings[client_name][name])):
2446
2657
client[name] = value
2447
2658
except KeyError:
2448
2659
pass
2449
2660
2450
2661
# Clients who has passed its expire date can still be
2451
# enabled if its last checker was successful. Clients
2662
# enabled if its last checker was successful. A Client
2452
2663
# whose checker succeeded before we stored its state is
2453
2664
# assumed to have successfully run all checkers during
2454
2665
# downtime.
2456
2667
if datetime.datetime.utcnow() >= client["expires"]:
2457
2668
if not client["last_checked_ok"]:
2458
2669
logger.warning(
2459
"disabling client {0} - Client never "
2460
"performed a successful checker"
2461
.format(client_name))
2670
"disabling client {} - Client never "
2671
"performed a successful checker".format(
2672
client_name))
2462
2673
client["enabled"] = False
2463
2674
elif client["last_checker_status"] != 0:
2464
2675
logger.warning(
2465
"disabling client {0} - Client "
2466
"last checker failed with error code {1}"
2467
.format(client_name,
2468
client["last_checker_status"]))
2676
"disabling client {} - Client last"
2677
" checker failed with error code"
2678
" {}".format(
2679
client_name,
2680
client["last_checker_status"]))
2469
2681
client["enabled"] = False
2470
2682
else:
2471
client["expires"] = (datetime.datetime
2472
.utcnow()
2473
+ client["timeout"])
2683
client["expires"] = (
2684
datetime.datetime.utcnow()
2685
+ client["timeout"])
2474
2686
logger.debug("Last checker succeeded,"
2475
" keeping {0} enabled"
2476
.format(client_name))
2687
" keeping {} enabled".format(
2688
client_name))
2477
2689
try:
2478
client["secret"] = (
2479
pgp.decrypt(client["encrypted_secret"],
2480
client_settings[client_name]
2481
["secret"]))
2690
client["secret"] = pgp.decrypt(
2691
client["encrypted_secret"],
2692
client_settings[client_name]["secret"])
2482
2693
except PGPError:
2483
2694
# If decryption fails, we use secret from new settings
2484
logger.debug("Failed to decrypt {0} old secret"
2485
.format(client_name))
2486
client["secret"] = (
2487
client_settings[client_name]["secret"])
2695
logger.debug("Failed to decrypt {} old secret".format(
2696
client_name))
2697
client["secret"] = (client_settings[client_name]
2698
["secret"])
2488
2699
2489
2700
# Add/remove clients based on new changes made to config
2490
2701
for client_name in (set(old_client_settings)
2495
2706
clients_data[client_name] = client_settings[client_name]
2496
2707
2497
2708
# Create all client objects
2498
for client_name, client in clients_data.iteritems():
2709
for client_name, client in clients_data.items():
2499
2710
tcp_server.clients[client_name] = client_class(
2500
name = client_name, settings = client)
2711
name = client_name,
2712
settings = client,
2713
server_settings = server_settings)
2501
2714
2502
2715
if not tcp_server.clients:
2503
2716
logger.warning("No clients defined")
2504
2717
2505
2718
if not foreground:
2506
2719
if pidfile is not None:
2720
pid = os.getpid()
2507
2721
try:
2508
2722
with pidfile:
2509
pid = os.getpid()
2510
pidfile.write(str(pid) + "\n".encode("utf-8"))
2723
print(pid, file=pidfile)
2511
2724
except IOError:
2512
2725
logger.error("Could not write to file %r with PID %d",
2513
2726
pidfilename, pid)
2518
2731
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2519
2732
2520
2733
if use_dbus:
2521
@alternate_dbus_interfaces({"se.recompile.Mandos":
2522
"se.bsnet.fukt.Mandos"})
2734
2735
@alternate_dbus_interfaces(
2736
{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
2523
2737
class MandosDBusService(DBusObjectWithProperties):
2524
2738
"""A D-Bus proxy object"""
2739
2525
2740
def __init__(self):
2526
2741
dbus.service.Object.__init__(self, bus, "/")
2742
2527
2743
_interface = "se.recompile.Mandos"
2528
2744
2529
2745
@dbus_interface_annotations(_interface)
2530
2746
def _foo(self):
2531
return { "org.freedesktop.DBus.Property"
2532
".EmitsChangedSignal":
2533
"false"}
2747
return {
2748
"org.freedesktop.DBus.Property.EmitsChangedSignal":
2749
"false" }
2534
2750
2535
2751
@dbus.service.signal(_interface, signature="o")
2536
2752
def ClientAdded(self, objpath):
2550
2766
@dbus.service.method(_interface, out_signature="ao")
2551
2767
def GetAllClients(self):
2552
2768
"D-Bus method"
2553
return dbus.Array(c.dbus_object_path
2554
for c in
2769
return dbus.Array(c.dbus_object_path for c in
2555
2770
tcp_server.clients.itervalues())
2556
2771
2557
2772
@dbus.service.method(_interface,
2559
2774
def GetAllClientsWithProperties(self):
2560
2775
"D-Bus method"
2561
2776
return dbus.Dictionary(
2562
((c.dbus_object_path, c.GetAll(""))
2563
for c in tcp_server.clients.itervalues()),
2777
{ c.dbus_object_path: c.GetAll("")
2778
for c in tcp_server.clients.itervalues() },
2564
2779
signature="oa{sv}")
2565
2780
2566
2781
@dbus.service.method(_interface, in_signature="o")
2583
2798
2584
2799
def cleanup():
2585
2800
"Cleanup function; run on exit"
2586
service.cleanup()
2801
if zeroconf:
2802
service.cleanup()
2587
2803
2588
2804
multiprocessing.active_children()
2805
wnull.close()
2589
2806
if not (tcp_server.clients or client_settings):
2590
2807
return
2591
2808
2602
2819
2603
2820
# A list of attributes that can not be pickled
2604
2821
# + secret.
2605
exclude = set(("bus", "changedstate", "secret",
2606
"checker"))
2607
for name, typ in (inspect.getmembers
2608
(dbus.service.Object)):
2822
exclude = { "bus", "changedstate", "secret",
2823
"checker", "server_settings" }
2824
for name, typ in inspect.getmembers(dbus.service
2825
.Object):
2609
2826
exclude.add(name)
2610
2827
2611
2828
client_dict["encrypted_secret"] = (client
2618
2835
del client_settings[client.name]["secret"]
2619
2836
2620
2837
try:
2621
with (tempfile.NamedTemporaryFile
2622
(mode='wb', suffix=".pickle", prefix='clients-',
2623
dir=os.path.dirname(stored_state_path),
2624
delete=False)) as stored_state:
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:
2625
2844
pickle.dump((clients, client_settings), stored_state)
2626
tempname=stored_state.name
2845
tempname = stored_state.name
2627
2846
os.rename(tempname, stored_state_path)
2628
2847
except (IOError, OSError) as e:
2629
2848
if not debug:
2632
2851
except NameError:
2633
2852
pass
2634
2853
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
2635
logger.warning("Could not save persistent state: {0}"
2854
logger.warning("Could not save persistent state: {}"
2636
2855
.format(os.strerror(e.errno)))
2637
2856
else:
2638
2857
logger.warning("Could not save persistent state:",
2639
2858
exc_info=e)
2640
raise e
2859
raise
2641
2860
2642
2861
# Delete all clients, and settings from config
2643
2862
while tcp_server.clients:
2648
2867
client.disable(quiet=True)
2649
2868
if use_dbus:
2650
2869
# Emit D-Bus signal
2651
mandos_dbus_service.ClientRemoved(client
2652
.dbus_object_path,
2653
client.name)
2870
mandos_dbus_service.ClientRemoved(
2871
client.dbus_object_path, client.name)
2654
2872
client_settings.clear()
2655
2873
2656
2874
atexit.register(cleanup)
2667
2885
tcp_server.server_activate()
2668
2886
2669
2887
# Find out what port we got
2670
service.port = tcp_server.socket.getsockname()[1]
2888
if zeroconf:
2889
service.port = tcp_server.socket.getsockname()[1]
2671
2890
if use_ipv6:
2672
2891
logger.info("Now listening on address %r, port %d,"
2673
2892
" flowinfo %d, scope_id %d",
2679
2898
#service.interface = tcp_server.socket.getsockname()[3]
2680
2899
2681
2900
try:
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
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
2690
2910
2691
2911
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2692
2912
lambda *args, **kwargs:
2707
2927
# Must run before the D-Bus bus name gets deregistered
2708
2928
cleanup()
2709
2929
2930
2710
2931
if __name__ == '__main__':
2711
2932
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0