To get this branch, use:
bzr branch
http://bzr.recompile.se/loggerhead/mandos/trunk
« back to all changes in this revision
Viewing changes to mandos
- browse files at revision 439
- compare with another revision
- download diff
- download tarball
- view history from revision 439
- Committer: Teddy Hogeborn
- Date: 2010-09-25 20:09:10 UTC
- Revision ID: teddy@fukt.bsnet.se-20100925200910-8bxnasqkol93sj89
* mandos: Do not write pid file if --debug is passed.
* mandos.xml (FILES): Pid file only records pid of latest server.
* mandos.xml (FILES): Pid file only records pid of latest server.
- files removed:
- bugs.xml
- debian/source
- debian/upstream
- network-hooks.d
- plugin-helpers
- files modified:
- .bzrignore
added
removed
mandos
11
11
# "AvahiService" class, and some lines in "main".
12
12
#
13
13
# Everything else is
14
# Copyright © 2008-2016 Teddy Hogeborn
15
# Copyright © 2008-2016 Björn Påhlsson
14
# Copyright © 2008,2009 Teddy Hogeborn
15
# Copyright © 2008,2009 Björn Påhlsson
16
16
#
17
17
# This program is free software: you can redistribute it and/or modify
18
18
# it under the terms of the GNU General Public License as published by
28
28
# along with this program. If not, see
29
29
# <http://www.gnu.org/licenses/>.
30
30
#
31
# Contact the authors at <mandos@recompile.se>.
31
# Contact the authors at <mandos@fukt.bsnet.se>.
32
32
#
33
33
34
from __future__ import (division, absolute_import, print_function,
35
unicode_literals)
36
37
from future_builtins import *
38
39
try:
40
import SocketServer as socketserver
41
except ImportError:
42
import socketserver
34
from __future__ import division, with_statement, absolute_import
35
36
import SocketServer as socketserver
43
37
import socket
44
import argparse
38
import optparse
45
39
import datetime
46
40
import errno
47
try:
48
import ConfigParser as configparser
49
except ImportError:
50
import configparser
41
import gnutls.crypto
42
import gnutls.connection
43
import gnutls.errors
44
import gnutls.library.functions
45
import gnutls.library.constants
46
import gnutls.library.types
47
import ConfigParser as configparser
51
48
import sys
52
49
import re
53
50
import os
62
59
import struct
63
60
import fcntl
64
61
import functools
65
try:
66
import cPickle as pickle
67
except ImportError:
68
import pickle
62
import cPickle as pickle
69
63
import multiprocessing
70
import types
71
import binascii
72
import tempfile
73
import itertools
74
import collections
75
import codecs
76
64
77
65
import dbus
78
66
import dbus.service
79
try:
80
from gi.repository import GObject
81
except ImportError:
82
import gobject as GObject
67
import gobject
83
68
import avahi
84
69
from dbus.mainloop.glib import DBusGMainLoop
85
70
import ctypes
95
80
except ImportError:
96
81
SO_BINDTODEVICE = None
97
82
98
if sys.version_info.major == 2:
99
str = unicode
100
101
version = "1.7.3"
102
stored_state_file = "clients.pickle"
103
104
logger = logging.getLogger()
105
syslogger = None
106
107
try:
108
if_nametoindex = ctypes.cdll.LoadLibrary(
109
ctypes.util.find_library("c")).if_nametoindex
110
except (OSError, AttributeError):
111
112
def if_nametoindex(interface):
113
"Get an interface index the hard way, i.e. using fcntl()"
114
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
115
with contextlib.closing(socket.socket()) as s:
116
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
117
struct.pack(b"16s16x", interface))
118
interface_index = struct.unpack("I", ifreq[16:20])[0]
119
return interface_index
120
121
122
def initlogger(debug, level=logging.WARNING):
123
"""init logger and add loglevel"""
124
125
global syslogger
126
syslogger = (logging.handlers.SysLogHandler(
127
facility = logging.handlers.SysLogHandler.LOG_DAEMON,
128
address = "/dev/log"))
129
syslogger.setFormatter(logging.Formatter
130
('Mandos [%(process)d]: %(levelname)s:'
131
' %(message)s'))
132
logger.addHandler(syslogger)
133
134
if debug:
135
console = logging.StreamHandler()
136
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
137
' [%(process)d]:'
138
' %(levelname)s:'
139
' %(message)s'))
140
logger.addHandler(console)
141
logger.setLevel(level)
142
143
144
class PGPError(Exception):
145
"""Exception if encryption/decryption fails"""
146
pass
147
148
149
class PGPEngine(object):
150
"""A simple class for OpenPGP symmetric encryption & decryption"""
151
152
def __init__(self):
153
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
154
self.gpg = "gpg"
155
try:
156
output = subprocess.check_output(["gpgconf"])
157
for line in output.splitlines():
158
name, text, path = line.split(":")
159
if name == "gpg":
160
self.gpg = path
161
break
162
except OSError as e:
163
if e.errno != errno.ENOENT:
164
raise
165
self.gnupgargs = ['--batch',
166
'--homedir', self.tempdir,
167
'--force-mdc',
168
'--quiet',
169
'--no-use-agent']
170
171
def __enter__(self):
172
return self
173
174
def __exit__(self, exc_type, exc_value, traceback):
175
self._cleanup()
176
return False
177
178
def __del__(self):
179
self._cleanup()
180
181
def _cleanup(self):
182
if self.tempdir is not None:
183
# Delete contents of tempdir
184
for root, dirs, files in os.walk(self.tempdir,
185
topdown = False):
186
for filename in files:
187
os.remove(os.path.join(root, filename))
188
for dirname in dirs:
189
os.rmdir(os.path.join(root, dirname))
190
# Remove tempdir
191
os.rmdir(self.tempdir)
192
self.tempdir = None
193
194
def password_encode(self, password):
195
# Passphrase can not be empty and can not contain newlines or
196
# NUL bytes. So we prefix it and hex encode it.
197
encoded = b"mandos" + binascii.hexlify(password)
198
if len(encoded) > 2048:
199
# GnuPG can't handle long passwords, so encode differently
200
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
201
.replace(b"\n", b"\\n")
202
.replace(b"\0", b"\\x00"))
203
return encoded
204
205
def encrypt(self, data, password):
206
passphrase = self.password_encode(password)
207
with tempfile.NamedTemporaryFile(
208
dir=self.tempdir) as passfile:
209
passfile.write(passphrase)
210
passfile.flush()
211
proc = subprocess.Popen([self.gpg, '--symmetric',
212
'--passphrase-file',
213
passfile.name]
214
+ self.gnupgargs,
215
stdin = subprocess.PIPE,
216
stdout = subprocess.PIPE,
217
stderr = subprocess.PIPE)
218
ciphertext, err = proc.communicate(input = data)
219
if proc.returncode != 0:
220
raise PGPError(err)
221
return ciphertext
222
223
def decrypt(self, data, password):
224
passphrase = self.password_encode(password)
225
with tempfile.NamedTemporaryFile(
226
dir = self.tempdir) as passfile:
227
passfile.write(passphrase)
228
passfile.flush()
229
proc = subprocess.Popen([self.gpg, '--decrypt',
230
'--passphrase-file',
231
passfile.name]
232
+ self.gnupgargs,
233
stdin = subprocess.PIPE,
234
stdout = subprocess.PIPE,
235
stderr = subprocess.PIPE)
236
decrypted_plaintext, err = proc.communicate(input = data)
237
if proc.returncode != 0:
238
raise PGPError(err)
239
return decrypted_plaintext
240
83
84
version = "1.0.14"
85
86
#logger = logging.getLogger(u'mandos')
87
logger = logging.Logger(u'mandos')
88
syslogger = (logging.handlers.SysLogHandler
89
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
90
address = "/dev/log"))
91
syslogger.setFormatter(logging.Formatter
92
(u'Mandos [%(process)d]: %(levelname)s:'
93
u' %(message)s'))
94
logger.addHandler(syslogger)
95
96
console = logging.StreamHandler()
97
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
98
u' %(levelname)s:'
99
u' %(message)s'))
100
logger.addHandler(console)
241
101
242
102
class AvahiError(Exception):
243
103
def __init__(self, value, *args, **kwargs):
244
104
self.value = value
245
return super(AvahiError, self).__init__(value, *args,
246
**kwargs)
247
105
super(AvahiError, self).__init__(value, *args, **kwargs)
106
def __unicode__(self):
107
return unicode(repr(self.value))
248
108
249
109
class AvahiServiceError(AvahiError):
250
110
pass
251
111
252
253
112
class AvahiGroupError(AvahiError):
254
113
pass
255
114
260
119
Attributes:
261
120
interface: integer; avahi.IF_UNSPEC or an interface index.
262
121
Used to optionally bind to the specified interface.
263
name: string; Example: 'Mandos'
264
type: string; Example: '_mandos._tcp'.
265
See <https://www.iana.org/assignments/service-names-port-numbers>
122
name: string; Example: u'Mandos'
123
type: string; Example: u'_mandos._tcp'.
124
See <http://www.dns-sd.org/ServiceTypes.html>
266
125
port: integer; what port to announce
267
126
TXT: list of strings; TXT record for the service
268
127
domain: string; Domain to publish on, default to .local if empty.
274
133
server: D-Bus Server
275
134
bus: dbus.SystemBus()
276
135
"""
277
278
def __init__(self,
279
interface = avahi.IF_UNSPEC,
280
name = None,
281
servicetype = None,
282
port = None,
283
TXT = None,
284
domain = "",
285
host = "",
286
max_renames = 32768,
287
protocol = avahi.PROTO_UNSPEC,
288
bus = None):
136
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
137
servicetype = None, port = None, TXT = None,
138
domain = u"", host = u"", max_renames = 32768,
139
protocol = avahi.PROTO_UNSPEC, bus = None):
289
140
self.interface = interface
290
141
self.name = name
291
142
self.type = servicetype
299
150
self.group = None # our entry group
300
151
self.server = None
301
152
self.bus = bus
302
self.entry_group_state_changed_match = None
303
304
def rename(self, remove=True):
153
def rename(self):
305
154
"""Derived from the Avahi example code"""
306
155
if self.rename_count >= self.max_renames:
307
logger.critical("No suitable Zeroconf service name found"
308
" after %i retries, exiting.",
156
logger.critical(u"No suitable Zeroconf service name found"
157
u" after %i retries, exiting.",
309
158
self.rename_count)
310
raise AvahiServiceError("Too many renames")
311
self.name = str(
312
self.server.GetAlternativeServiceName(self.name))
159
raise AvahiServiceError(u"Too many renames")
160
self.name = unicode(self.server.GetAlternativeServiceName(self.name))
161
logger.info(u"Changing Zeroconf service name to %r ...",
162
self.name)
163
syslogger.setFormatter(logging.Formatter
164
(u'Mandos (%s) [%%(process)d]:'
165
u' %%(levelname)s: %%(message)s'
166
% self.name))
167
self.remove()
168
try:
169
self.add()
170
except dbus.exceptions.DBusException, error:
171
logger.critical(u"DBusException: %s", error)
172
self.cleanup()
173
os._exit(1)
313
174
self.rename_count += 1
314
logger.info("Changing Zeroconf service name to %r ...",
315
self.name)
316
if remove:
317
self.remove()
318
try:
319
self.add()
320
except dbus.exceptions.DBusException as error:
321
if (error.get_dbus_name()
322
== "org.freedesktop.Avahi.CollisionError"):
323
logger.info("Local Zeroconf service name collision.")
324
return self.rename(remove=False)
325
else:
326
logger.critical("D-Bus Exception", exc_info=error)
327
self.cleanup()
328
os._exit(1)
329
330
175
def remove(self):
331
176
"""Derived from the Avahi example code"""
332
if self.entry_group_state_changed_match is not None:
333
self.entry_group_state_changed_match.remove()
334
self.entry_group_state_changed_match = None
335
177
if self.group is not None:
336
178
self.group.Reset()
337
338
179
def add(self):
339
180
"""Derived from the Avahi example code"""
340
self.remove()
341
181
if self.group is None:
342
182
self.group = dbus.Interface(
343
183
self.bus.get_object(avahi.DBUS_NAME,
344
184
self.server.EntryGroupNew()),
345
185
avahi.DBUS_INTERFACE_ENTRY_GROUP)
346
self.entry_group_state_changed_match = (
347
self.group.connect_to_signal(
348
'StateChanged', self.entry_group_state_changed))
349
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
186
self.group.connect_to_signal('StateChanged',
187
self
188
.entry_group_state_changed)
189
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
350
190
self.name, self.type)
351
191
self.group.AddService(
352
192
self.interface,
357
197
dbus.UInt16(self.port),
358
198
avahi.string_array_to_txt_array(self.TXT))
359
199
self.group.Commit()
360
361
200
def entry_group_state_changed(self, state, error):
362
201
"""Derived from the Avahi example code"""
363
logger.debug("Avahi entry group state change: %i", state)
202
logger.debug(u"Avahi entry group state change: %i", state)
364
203
365
204
if state == avahi.ENTRY_GROUP_ESTABLISHED:
366
logger.debug("Zeroconf service established.")
205
logger.debug(u"Zeroconf service established.")
367
206
elif state == avahi.ENTRY_GROUP_COLLISION:
368
logger.info("Zeroconf service name collision.")
207
logger.warning(u"Zeroconf service name collision.")
369
208
self.rename()
370
209
elif state == avahi.ENTRY_GROUP_FAILURE:
371
logger.critical("Avahi: Error in group state changed %s",
372
str(error))
373
raise AvahiGroupError("State changed: {!s}".format(error))
374
210
logger.critical(u"Avahi: Error in group state changed %s",
211
unicode(error))
212
raise AvahiGroupError(u"State changed: %s"
213
% unicode(error))
375
214
def cleanup(self):
376
215
"""Derived from the Avahi example code"""
377
216
if self.group is not None:
378
try:
379
self.group.Free()
380
except (dbus.exceptions.UnknownMethodException,
381
dbus.exceptions.DBusException):
382
pass
217
self.group.Free()
383
218
self.group = None
384
self.remove()
385
386
def server_state_changed(self, state, error=None):
219
def server_state_changed(self, state):
387
220
"""Derived from the Avahi example code"""
388
logger.debug("Avahi server state change: %i", state)
389
bad_states = {
390
avahi.SERVER_INVALID: "Zeroconf server invalid",
391
avahi.SERVER_REGISTERING: None,
392
avahi.SERVER_COLLISION: "Zeroconf server name collision",
393
avahi.SERVER_FAILURE: "Zeroconf server failure",
394
}
395
if state in bad_states:
396
if bad_states[state] is not None:
397
if error is None:
398
logger.error(bad_states[state])
399
else:
400
logger.error(bad_states[state] + ": %r", error)
401
self.cleanup()
221
logger.debug(u"Avahi server state change: %i", state)
222
if state == avahi.SERVER_COLLISION:
223
logger.error(u"Zeroconf server name collision")
224
self.remove()
402
225
elif state == avahi.SERVER_RUNNING:
403
try:
404
self.add()
405
except dbus.exceptions.DBusException as error:
406
if (error.get_dbus_name()
407
== "org.freedesktop.Avahi.CollisionError"):
408
logger.info("Local Zeroconf service name"
409
" collision.")
410
return self.rename(remove=False)
411
else:
412
logger.critical("D-Bus Exception", exc_info=error)
413
self.cleanup()
414
os._exit(1)
415
else:
416
if error is None:
417
logger.debug("Unknown state: %r", state)
418
else:
419
logger.debug("Unknown state: %r: %r", state, error)
420
226
self.add()
421
227
def activate(self):
422
228
"""Derived from the Avahi example code"""
423
229
if self.server is None:
424
230
self.server = dbus.Interface(
425
231
self.bus.get_object(avahi.DBUS_NAME,
426
avahi.DBUS_PATH_SERVER,
427
follow_name_owner_changes=True),
232
avahi.DBUS_PATH_SERVER),
428
233
avahi.DBUS_INTERFACE_SERVER)
429
self.server.connect_to_signal("StateChanged",
430
self.server_state_changed)
234
self.server.connect_to_signal(u"StateChanged",
235
self.server_state_changed)
431
236
self.server_state_changed(self.server.GetState())
432
237
433
238
434
class AvahiServiceToSyslog(AvahiService):
435
def rename(self, *args, **kwargs):
436
"""Add the new name to the syslog messages"""
437
ret = AvahiService.rename(self, *args, **kwargs)
438
syslogger.setFormatter(logging.Formatter(
439
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
440
.format(self.name)))
441
return ret
442
443
# Pretend that we have a GnuTLS module
444
class GnuTLS(object):
445
"""This isn't so much a class as it is a module-like namespace.
446
It is instantiated once, and simulates having a GnuTLS module."""
447
448
_library = ctypes.cdll.LoadLibrary(
449
ctypes.util.find_library("gnutls"))
450
_need_version = "3.3.0"
451
def __init__(self):
452
# Need to use class name "GnuTLS" here, since this method is
453
# called before the assignment to the "gnutls" global variable
454
# happens.
455
if GnuTLS.check_version(self._need_version) is None:
456
raise GnuTLS.Error("Needs GnuTLS {} or later"
457
.format(self._need_version))
458
459
# Unless otherwise indicated, the constants and types below are
460
# all from the gnutls/gnutls.h C header file.
461
462
# Constants
463
E_SUCCESS = 0
464
E_INTERRUPTED = -52
465
E_AGAIN = -28
466
CRT_OPENPGP = 2
467
CLIENT = 2
468
SHUT_RDWR = 0
469
CRD_CERTIFICATE = 1
470
E_NO_CERTIFICATE_FOUND = -49
471
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
472
473
# Types
474
class session_int(ctypes.Structure):
475
_fields_ = []
476
session_t = ctypes.POINTER(session_int)
477
class certificate_credentials_st(ctypes.Structure):
478
_fields_ = []
479
certificate_credentials_t = ctypes.POINTER(
480
certificate_credentials_st)
481
certificate_type_t = ctypes.c_int
482
class datum_t(ctypes.Structure):
483
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
484
('size', ctypes.c_uint)]
485
class openpgp_crt_int(ctypes.Structure):
486
_fields_ = []
487
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
488
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
489
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
490
credentials_type_t = ctypes.c_int #
491
transport_ptr_t = ctypes.c_void_p
492
close_request_t = ctypes.c_int
493
494
# Exceptions
495
class Error(Exception):
496
# We need to use the class name "GnuTLS" here, since this
497
# exception might be raised from within GnuTLS.__init__,
498
# which is called before the assignment to the "gnutls"
499
# global variable has happened.
500
def __init__(self, message = None, code = None, args=()):
501
# Default usage is by a message string, but if a return
502
# code is passed, convert it to a string with
503
# gnutls.strerror()
504
self.code = code
505
if message is None and code is not None:
506
message = GnuTLS.strerror(code)
507
return super(GnuTLS.Error, self).__init__(
508
message, *args)
509
510
class CertificateSecurityError(Error):
511
pass
512
513
# Classes
514
class Credentials(object):
515
def __init__(self):
516
self._c_object = gnutls.certificate_credentials_t()
517
gnutls.certificate_allocate_credentials(
518
ctypes.byref(self._c_object))
519
self.type = gnutls.CRD_CERTIFICATE
520
521
def __del__(self):
522
gnutls.certificate_free_credentials(self._c_object)
523
524
class ClientSession(object):
525
def __init__(self, socket, credentials = None):
526
self._c_object = gnutls.session_t()
527
gnutls.init(ctypes.byref(self._c_object), gnutls.CLIENT)
528
gnutls.set_default_priority(self._c_object)
529
gnutls.transport_set_ptr(self._c_object, socket.fileno())
530
gnutls.handshake_set_private_extensions(self._c_object,
531
True)
532
self.socket = socket
533
if credentials is None:
534
credentials = gnutls.Credentials()
535
gnutls.credentials_set(self._c_object, credentials.type,
536
ctypes.cast(credentials._c_object,
537
ctypes.c_void_p))
538
self.credentials = credentials
539
540
def __del__(self):
541
gnutls.deinit(self._c_object)
542
543
def handshake(self):
544
return gnutls.handshake(self._c_object)
545
546
def send(self, data):
547
data = bytes(data)
548
data_len = len(data)
549
while data_len > 0:
550
data_len -= gnutls.record_send(self._c_object,
551
data[-data_len:],
552
data_len)
553
554
def bye(self):
555
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
556
557
# Error handling functions
558
def _error_code(result):
559
"""A function to raise exceptions on errors, suitable
560
for the 'restype' attribute on ctypes functions"""
561
if result >= 0:
562
return result
563
if result == gnutls.E_NO_CERTIFICATE_FOUND:
564
raise gnutls.CertificateSecurityError(code = result)
565
raise gnutls.Error(code = result)
566
567
def _retry_on_error(result, func, arguments):
568
"""A function to retry on some errors, suitable
569
for the 'errcheck' attribute on ctypes functions"""
570
while result < 0:
571
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
572
return _error_code(result)
573
result = func(*arguments)
574
return result
575
576
# Unless otherwise indicated, the function declarations below are
577
# all from the gnutls/gnutls.h C header file.
578
579
# Functions
580
priority_set_direct = _library.gnutls_priority_set_direct
581
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
582
ctypes.POINTER(ctypes.c_char_p)]
583
priority_set_direct.restype = _error_code
584
585
init = _library.gnutls_init
586
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
587
init.restype = _error_code
588
589
set_default_priority = _library.gnutls_set_default_priority
590
set_default_priority.argtypes = [session_t]
591
set_default_priority.restype = _error_code
592
593
record_send = _library.gnutls_record_send
594
record_send.argtypes = [session_t, ctypes.c_void_p,
595
ctypes.c_size_t]
596
record_send.restype = ctypes.c_ssize_t
597
record_send.errcheck = _retry_on_error
598
599
certificate_allocate_credentials = (
600
_library.gnutls_certificate_allocate_credentials)
601
certificate_allocate_credentials.argtypes = [
602
ctypes.POINTER(certificate_credentials_t)]
603
certificate_allocate_credentials.restype = _error_code
604
605
certificate_free_credentials = (
606
_library.gnutls_certificate_free_credentials)
607
certificate_free_credentials.argtypes = [certificate_credentials_t]
608
certificate_free_credentials.restype = None
609
610
handshake_set_private_extensions = (
611
_library.gnutls_handshake_set_private_extensions)
612
handshake_set_private_extensions.argtypes = [session_t,
613
ctypes.c_int]
614
handshake_set_private_extensions.restype = None
615
616
credentials_set = _library.gnutls_credentials_set
617
credentials_set.argtypes = [session_t, credentials_type_t,
618
ctypes.c_void_p]
619
credentials_set.restype = _error_code
620
621
strerror = _library.gnutls_strerror
622
strerror.argtypes = [ctypes.c_int]
623
strerror.restype = ctypes.c_char_p
624
625
certificate_type_get = _library.gnutls_certificate_type_get
626
certificate_type_get.argtypes = [session_t]
627
certificate_type_get.restype = _error_code
628
629
certificate_get_peers = _library.gnutls_certificate_get_peers
630
certificate_get_peers.argtypes = [session_t,
631
ctypes.POINTER(ctypes.c_uint)]
632
certificate_get_peers.restype = ctypes.POINTER(datum_t)
633
634
global_set_log_level = _library.gnutls_global_set_log_level
635
global_set_log_level.argtypes = [ctypes.c_int]
636
global_set_log_level.restype = None
637
638
global_set_log_function = _library.gnutls_global_set_log_function
639
global_set_log_function.argtypes = [log_func]
640
global_set_log_function.restype = None
641
642
deinit = _library.gnutls_deinit
643
deinit.argtypes = [session_t]
644
deinit.restype = None
645
646
handshake = _library.gnutls_handshake
647
handshake.argtypes = [session_t]
648
handshake.restype = _error_code
649
handshake.errcheck = _retry_on_error
650
651
transport_set_ptr = _library.gnutls_transport_set_ptr
652
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
653
transport_set_ptr.restype = None
654
655
bye = _library.gnutls_bye
656
bye.argtypes = [session_t, close_request_t]
657
bye.restype = _error_code
658
bye.errcheck = _retry_on_error
659
660
check_version = _library.gnutls_check_version
661
check_version.argtypes = [ctypes.c_char_p]
662
check_version.restype = ctypes.c_char_p
663
664
# All the function declarations below are from gnutls/openpgp.h
665
666
openpgp_crt_init = _library.gnutls_openpgp_crt_init
667
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
668
openpgp_crt_init.restype = _error_code
669
670
openpgp_crt_import = _library.gnutls_openpgp_crt_import
671
openpgp_crt_import.argtypes = [openpgp_crt_t,
672
ctypes.POINTER(datum_t),
673
openpgp_crt_fmt_t]
674
openpgp_crt_import.restype = _error_code
675
676
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
677
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
678
ctypes.POINTER(ctypes.c_uint)]
679
openpgp_crt_verify_self.restype = _error_code
680
681
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
682
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
683
openpgp_crt_deinit.restype = None
684
685
openpgp_crt_get_fingerprint = (
686
_library.gnutls_openpgp_crt_get_fingerprint)
687
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
688
ctypes.c_void_p,
689
ctypes.POINTER(
690
ctypes.c_size_t)]
691
openpgp_crt_get_fingerprint.restype = _error_code
692
693
# Remove non-public functions
694
del _error_code, _retry_on_error
695
# Create the global "gnutls" object, simulating a module
696
gnutls = GnuTLS()
697
698
def call_pipe(connection, # : multiprocessing.Connection
699
func, *args, **kwargs):
700
"""This function is meant to be called by multiprocessing.Process
701
702
This function runs func(*args, **kwargs), and writes the resulting
703
return value on the provided multiprocessing.Connection.
704
"""
705
connection.send(func(*args, **kwargs))
706
connection.close()
707
708
239
class Client(object):
709
240
"""A representation of a client host served by this server.
710
241
711
242
Attributes:
712
approved: bool(); 'None' if not yet approved/disapproved
243
_approved: bool(); 'None' if not yet approved/disapproved
713
244
approval_delay: datetime.timedelta(); Time to wait for approval
714
245
approval_duration: datetime.timedelta(); Duration of one approval
715
246
checker: subprocess.Popen(); a running checker process used
716
247
to see if the client lives.
717
248
'None' if no process is running.
718
checker_callback_tag: a GObject event source tag, or None
249
checker_callback_tag: - '' -
719
250
checker_command: string; External command which is run to check
720
251
if client lives. %() expansions are done at
721
252
runtime with vars(self) as dict, so that for
722
253
instance %(name)s can be used in the command.
723
checker_initiator_tag: a GObject event source tag, or None
254
checker_initiator_tag: a gobject event source tag, or None
724
255
created: datetime.datetime(); (UTC) object creation
725
client_structure: Object describing what attributes a client has
726
and is used for storing the client at exit
727
256
current_checker_command: string; current running checker_command
728
disable_initiator_tag: a GObject event source tag, or None
257
disable_hook: If set, called by disable() as disable_hook(self)
258
disable_initiator_tag: - '' -
729
259
enabled: bool()
730
260
fingerprint: string (40 or 32 hexadecimal digits); used to
731
261
uniquely identify the client
732
262
host: string; available for use by the checker command
733
263
interval: datetime.timedelta(); How often to start a new checker
734
last_approval_request: datetime.datetime(); (UTC) or None
735
264
last_checked_ok: datetime.datetime(); (UTC) or None
736
last_checker_status: integer between 0 and 255 reflecting exit
737
status of last checker. -1 reflects crashed
738
checker, -2 means no checker completed yet.
739
last_checker_signal: The signal which killed the last checker, if
740
last_checker_status is -1
741
last_enabled: datetime.datetime(); (UTC) or None
265
last_enabled: datetime.datetime(); (UTC)
742
266
name: string; from the config file, used in log messages and
743
267
D-Bus identifiers
744
268
secret: bytestring; sent verbatim (over TLS) to client
745
269
timeout: datetime.timedelta(); How long from last_checked_ok
746
270
until this client is disabled
747
extended_timeout: extra long timeout when secret has been sent
748
271
runtime_expansions: Allowed attributes for runtime expansion.
749
expires: datetime.datetime(); time (UTC) when a client will be
750
disabled, or None
751
server_settings: The server_settings dict from main()
752
272
"""
753
273
754
runtime_expansions = ("approval_delay", "approval_duration",
755
"created", "enabled", "expires",
756
"fingerprint", "host", "interval",
757
"last_approval_request", "last_checked_ok",
758
"last_enabled", "name", "timeout")
759
client_defaults = {
760
"timeout": "PT5M",
761
"extended_timeout": "PT15M",
762
"interval": "PT2M",
763
"checker": "fping -q -- %%(host)s",
764
"host": "",
765
"approval_delay": "PT0S",
766
"approval_duration": "PT1S",
767
"approved_by_default": "True",
768
"enabled": "True",
769
}
274
runtime_expansions = (u"approval_delay", u"approval_duration",
275
u"created", u"enabled", u"fingerprint",
276
u"host", u"interval", u"last_checked_ok",
277
u"last_enabled", u"name", u"timeout")
770
278
771
279
@staticmethod
772
def config_parser(config):
773
"""Construct a new dict of client settings of this form:
774
{ client_name: {setting_name: value, ...}, ...}
775
with exceptions for any special settings as defined above.
776
NOTE: Must be a pure function. Must return the same result
777
value given the same arguments.
778
"""
779
settings = {}
780
for client_name in config.sections():
781
section = dict(config.items(client_name))
782
client = settings[client_name] = {}
783
784
client["host"] = section["host"]
785
# Reformat values from string types to Python types
786
client["approved_by_default"] = config.getboolean(
787
client_name, "approved_by_default")
788
client["enabled"] = config.getboolean(client_name,
789
"enabled")
790
791
# Uppercase and remove spaces from fingerprint for later
792
# comparison purposes with return value from the
793
# fingerprint() function
794
client["fingerprint"] = (section["fingerprint"].upper()
795
.replace(" ", ""))
796
if "secret" in section:
797
client["secret"] = section["secret"].decode("base64")
798
elif "secfile" in section:
799
with open(os.path.expanduser(os.path.expandvars
800
(section["secfile"])),
801
"rb") as secfile:
802
client["secret"] = secfile.read()
803
else:
804
raise TypeError("No secret or secfile for section {}"
805
.format(section))
806
client["timeout"] = string_to_delta(section["timeout"])
807
client["extended_timeout"] = string_to_delta(
808
section["extended_timeout"])
809
client["interval"] = string_to_delta(section["interval"])
810
client["approval_delay"] = string_to_delta(
811
section["approval_delay"])
812
client["approval_duration"] = string_to_delta(
813
section["approval_duration"])
814
client["checker_command"] = section["checker"]
815
client["last_approval_request"] = None
816
client["last_checked_ok"] = None
817
client["last_checker_status"] = -2
818
819
return settings
820
821
def __init__(self, settings, name = None, server_settings=None):
280
def _timedelta_to_milliseconds(td):
281
"Convert a datetime.timedelta() to milliseconds"
282
return ((td.days * 24 * 60 * 60 * 1000)
283
+ (td.seconds * 1000)
284
+ (td.microseconds // 1000))
285
286
def timeout_milliseconds(self):
287
"Return the 'timeout' attribute in milliseconds"
288
return self._timedelta_to_milliseconds(self.timeout)
289
290
def interval_milliseconds(self):
291
"Return the 'interval' attribute in milliseconds"
292
return self._timedelta_to_milliseconds(self.interval)
293
294
def approval_delay_milliseconds(self):
295
return self._timedelta_to_milliseconds(self.approval_delay)
296
297
def __init__(self, name = None, disable_hook=None, config=None):
298
"""Note: the 'checker' key in 'config' sets the
299
'checker_command' attribute and *not* the 'checker'
300
attribute."""
822
301
self.name = name
823
if server_settings is None:
824
server_settings = {}
825
self.server_settings = server_settings
826
# adding all client settings
827
for setting, value in settings.items():
828
setattr(self, setting, value)
829
830
if self.enabled:
831
if not hasattr(self, "last_enabled"):
832
self.last_enabled = datetime.datetime.utcnow()
833
if not hasattr(self, "expires"):
834
self.expires = (datetime.datetime.utcnow()
835
+ self.timeout)
302
if config is None:
303
config = {}
304
logger.debug(u"Creating client %r", self.name)
305
# Uppercase and remove spaces from fingerprint for later
306
# comparison purposes with return value from the fingerprint()
307
# function
308
self.fingerprint = (config[u"fingerprint"].upper()
309
.replace(u" ", u""))
310
logger.debug(u" Fingerprint: %s", self.fingerprint)
311
if u"secret" in config:
312
self.secret = config[u"secret"].decode(u"base64")
313
elif u"secfile" in config:
314
with open(os.path.expanduser(os.path.expandvars
315
(config[u"secfile"])),
316
"rb") as secfile:
317
self.secret = secfile.read()
836
318
else:
837
self.last_enabled = None
838
self.expires = None
839
840
logger.debug("Creating client %r", self.name)
841
logger.debug(" Fingerprint: %s", self.fingerprint)
842
self.created = settings.get("created",
843
datetime.datetime.utcnow())
844
845
# attributes specific for this server instance
319
raise TypeError(u"No secret or secfile for client %s"
320
% self.name)
321
self.host = config.get(u"host", u"")
322
self.created = datetime.datetime.utcnow()
323
self.enabled = False
324
self.last_enabled = None
325
self.last_checked_ok = None
326
self.timeout = string_to_delta(config[u"timeout"])
327
self.interval = string_to_delta(config[u"interval"])
328
self.disable_hook = disable_hook
846
329
self.checker = None
847
330
self.checker_initiator_tag = None
848
331
self.disable_initiator_tag = None
849
332
self.checker_callback_tag = None
333
self.checker_command = config[u"checker"]
850
334
self.current_checker_command = None
851
self.approved = None
335
self.last_connect = None
336
self._approved = None
337
self.approved_by_default = config.get(u"approved_by_default",
338
True)
852
339
self.approvals_pending = 0
853
self.changedstate = multiprocessing_manager.Condition(
854
multiprocessing_manager.Lock())
855
self.client_structure = [attr
856
for attr in self.__dict__.iterkeys()
857
if not attr.startswith("_")]
858
self.client_structure.append("client_structure")
859
860
for name, t in inspect.getmembers(
861
type(self), lambda obj: isinstance(obj, property)):
862
if not name.startswith("_"):
863
self.client_structure.append(name)
340
self.approval_delay = string_to_delta(
341
config[u"approval_delay"])
342
self.approval_duration = string_to_delta(
343
config[u"approval_duration"])
344
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
864
345
865
# Send notice to process children that client state has changed
866
346
def send_changedstate(self):
867
with self.changedstate:
868
self.changedstate.notify_all()
869
347
self.changedstate.acquire()
348
self.changedstate.notify_all()
349
self.changedstate.release()
350
870
351
def enable(self):
871
352
"""Start this client's checker and timeout hooks"""
872
if getattr(self, "enabled", False):
353
if getattr(self, u"enabled", False):
873
354
# Already enabled
874
355
return
875
self.expires = datetime.datetime.utcnow() + self.timeout
876
self.enabled = True
356
self.send_changedstate()
877
357
self.last_enabled = datetime.datetime.utcnow()
878
self.init_checker()
879
self.send_changedstate()
358
# Schedule a new checker to be started an 'interval' from now,
359
# and every interval from then on.
360
self.checker_initiator_tag = (gobject.timeout_add
361
(self.interval_milliseconds(),
362
self.start_checker))
363
# Schedule a disable() when 'timeout' has passed
364
self.disable_initiator_tag = (gobject.timeout_add
365
(self.timeout_milliseconds(),
366
self.disable))
367
self.enabled = True
368
# Also start a new checker *right now*.
369
self.start_checker()
880
370
881
371
def disable(self, quiet=True):
882
372
"""Disable this client."""
883
373
if not getattr(self, "enabled", False):
884
374
return False
885
375
if not quiet:
886
logger.info("Disabling client %s", self.name)
887
if getattr(self, "disable_initiator_tag", None) is not None:
888
GObject.source_remove(self.disable_initiator_tag)
376
self.send_changedstate()
377
if not quiet:
378
logger.info(u"Disabling client %s", self.name)
379
if getattr(self, u"disable_initiator_tag", False):
380
gobject.source_remove(self.disable_initiator_tag)
889
381
self.disable_initiator_tag = None
890
self.expires = None
891
if getattr(self, "checker_initiator_tag", None) is not None:
892
GObject.source_remove(self.checker_initiator_tag)
382
if getattr(self, u"checker_initiator_tag", False):
383
gobject.source_remove(self.checker_initiator_tag)
893
384
self.checker_initiator_tag = None
894
385
self.stop_checker()
386
if self.disable_hook:
387
self.disable_hook(self)
895
388
self.enabled = False
896
if not quiet:
897
self.send_changedstate()
898
# Do not run this again if called by a GObject.timeout_add
389
# Do not run this again if called by a gobject.timeout_add
899
390
return False
900
391
901
392
def __del__(self):
393
self.disable_hook = None
902
394
self.disable()
903
395
904
def init_checker(self):
905
# Schedule a new checker to be started an 'interval' from now,
906
# and every interval from then on.
907
if self.checker_initiator_tag is not None:
908
GObject.source_remove(self.checker_initiator_tag)
909
self.checker_initiator_tag = GObject.timeout_add(
910
int(self.interval.total_seconds() * 1000),
911
self.start_checker)
912
# Schedule a disable() when 'timeout' has passed
913
if self.disable_initiator_tag is not None:
914
GObject.source_remove(self.disable_initiator_tag)
915
self.disable_initiator_tag = GObject.timeout_add(
916
int(self.timeout.total_seconds() * 1000), self.disable)
917
# Also start a new checker *right now*.
918
self.start_checker()
919
920
def checker_callback(self, source, condition, connection,
921
command):
396
def checker_callback(self, pid, condition, command):
922
397
"""The checker has completed, so take appropriate actions."""
923
398
self.checker_callback_tag = None
924
399
self.checker = None
925
# Read return code from connection (see call_pipe)
926
returncode = connection.recv()
927
connection.close()
928
929
if returncode >= 0:
930
self.last_checker_status = returncode
931
self.last_checker_signal = None
932
if self.last_checker_status == 0:
933
logger.info("Checker for %(name)s succeeded",
400
if os.WIFEXITED(condition):
401
exitstatus = os.WEXITSTATUS(condition)
402
if exitstatus == 0:
403
logger.info(u"Checker for %(name)s succeeded",
934
404
vars(self))
935
405
self.checked_ok()
936
406
else:
937
logger.info("Checker for %(name)s failed", vars(self))
407
logger.info(u"Checker for %(name)s failed",
408
vars(self))
938
409
else:
939
self.last_checker_status = -1
940
self.last_checker_signal = -returncode
941
logger.warning("Checker for %(name)s crashed?",
410
logger.warning(u"Checker for %(name)s crashed?",
942
411
vars(self))
943
return False
944
412
945
413
def checked_ok(self):
946
"""Assert that the client has been seen, alive and well."""
414
"""Bump up the timeout for this client.
415
416
This should only be called when the client has been seen,
417
alive and well.
418
"""
947
419
self.last_checked_ok = datetime.datetime.utcnow()
948
self.last_checker_status = 0
949
self.last_checker_signal = None
950
self.bump_timeout()
951
952
def bump_timeout(self, timeout=None):
953
"""Bump up the timeout for this client."""
954
if timeout is None:
955
timeout = self.timeout
956
if self.disable_initiator_tag is not None:
957
GObject.source_remove(self.disable_initiator_tag)
958
self.disable_initiator_tag = None
959
if getattr(self, "enabled", False):
960
self.disable_initiator_tag = GObject.timeout_add(
961
int(timeout.total_seconds() * 1000), self.disable)
962
self.expires = datetime.datetime.utcnow() + timeout
963
964
def need_approval(self):
965
self.last_approval_request = datetime.datetime.utcnow()
420
gobject.source_remove(self.disable_initiator_tag)
421
self.disable_initiator_tag = (gobject.timeout_add
422
(self.timeout_milliseconds(),
423
self.disable))
966
424
967
425
def start_checker(self):
968
426
"""Start a new checker subprocess if one is not running.
970
428
If a checker already exists, leave it running and do
971
429
nothing."""
972
430
# The reason for not killing a running checker is that if we
973
# did that, and if a checker (for some reason) started running
974
# slowly and taking more than 'interval' time, then the client
975
# would inevitably timeout, since no checker would get a
976
# chance to run to completion. If we instead leave running
431
# did that, then if a checker (for some reason) started
432
# running slowly and taking more than 'interval' time, the
433
# client would inevitably timeout, since no checker would get
434
# a chance to run to completion. If we instead leave running
977
435
# checkers alone, the checker would have to take more time
978
436
# than 'timeout' for the client to be disabled, which is as it
979
437
# should be.
980
438
981
if self.checker is not None and not self.checker.is_alive():
982
logger.warning("Checker was not alive; joining")
983
self.checker.join()
984
self.checker = None
439
# If a checker exists, make sure it is not a zombie
440
try:
441
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
442
except (AttributeError, OSError), error:
443
if (isinstance(error, OSError)
444
and error.errno != errno.ECHILD):
445
raise error
446
else:
447
if pid:
448
logger.warning(u"Checker was a zombie")
449
gobject.source_remove(self.checker_callback_tag)
450
self.checker_callback(pid, status,
451
self.current_checker_command)
985
452
# Start a new checker if needed
986
453
if self.checker is None:
987
# Escape attributes for the shell
988
escaped_attrs = {
989
attr: re.escape(str(getattr(self, attr)))
990
for attr in self.runtime_expansions }
991
454
try:
992
command = self.checker_command % escaped_attrs
993
except TypeError as error:
994
logger.error('Could not format string "%s"',
995
self.checker_command,
996
exc_info=error)
997
return True # Try again later
455
# In case checker_command has exactly one % operator
456
command = self.checker_command % self.host
457
except TypeError:
458
# Escape attributes for the shell
459
escaped_attrs = dict(
460
(attr,
461
re.escape(unicode(str(getattr(self, attr, u"")),
462
errors=
463
u'replace')))
464
for attr in
465
self.runtime_expansions)
466
467
try:
468
command = self.checker_command % escaped_attrs
469
except TypeError, error:
470
logger.error(u'Could not format string "%s":'
471
u' %s', self.checker_command, error)
472
return True # Try again later
998
473
self.current_checker_command = command
999
logger.info("Starting checker %r for %s", command,
1000
self.name)
1001
# We don't need to redirect stdout and stderr, since
1002
# in normal mode, that is already done by daemon(),
1003
# and in debug mode we don't want to. (Stdin is
1004
# always replaced by /dev/null.)
1005
# The exception is when not debugging but nevertheless
1006
# running in the foreground; use the previously
1007
# created wnull.
1008
popen_args = { "close_fds": True,
1009
"shell": True,
1010
"cwd": "/" }
1011
if (not self.server_settings["debug"]
1012
and self.server_settings["foreground"]):
1013
popen_args.update({"stdout": wnull,
1014
"stderr": wnull })
1015
pipe = multiprocessing.Pipe(duplex = False)
1016
self.checker = multiprocessing.Process(
1017
target = call_pipe,
1018
args = (pipe[1], subprocess.call, command),
1019
kwargs = popen_args)
1020
self.checker.start()
1021
self.checker_callback_tag = GObject.io_add_watch(
1022
pipe[0].fileno(), GObject.IO_IN,
1023
self.checker_callback, pipe[0], command)
1024
# Re-run this periodically if run by GObject.timeout_add
474
try:
475
logger.info(u"Starting checker %r for %s",
476
command, self.name)
477
# We don't need to redirect stdout and stderr, since
478
# in normal mode, that is already done by daemon(),
479
# and in debug mode we don't want to. (Stdin is
480
# always replaced by /dev/null.)
481
self.checker = subprocess.Popen(command,
482
close_fds=True,
483
shell=True, cwd=u"/")
484
self.checker_callback_tag = (gobject.child_watch_add
485
(self.checker.pid,
486
self.checker_callback,
487
data=command))
488
# The checker may have completed before the gobject
489
# watch was added. Check for this.
490
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
491
if pid:
492
gobject.source_remove(self.checker_callback_tag)
493
self.checker_callback(pid, status, command)
494
except OSError, error:
495
logger.error(u"Failed to start subprocess: %s",
496
error)
497
# Re-run this periodically if run by gobject.timeout_add
1025
498
return True
1026
499
1027
500
def stop_checker(self):
1028
501
"""Force the checker process, if any, to stop."""
1029
502
if self.checker_callback_tag:
1030
GObject.source_remove(self.checker_callback_tag)
503
gobject.source_remove(self.checker_callback_tag)
1031
504
self.checker_callback_tag = None
1032
if getattr(self, "checker", None) is None:
505
if getattr(self, u"checker", None) is None:
1033
506
return
1034
logger.debug("Stopping checker for %(name)s", vars(self))
1035
self.checker.terminate()
507
logger.debug(u"Stopping checker for %(name)s", vars(self))
508
try:
509
os.kill(self.checker.pid, signal.SIGTERM)
510
#time.sleep(0.5)
511
#if self.checker.poll() is None:
512
# os.kill(self.checker.pid, signal.SIGKILL)
513
except OSError, error:
514
if error.errno != errno.ESRCH: # No such process
515
raise
1036
516
self.checker = None
1037
517
1038
1039
def dbus_service_property(dbus_interface,
1040
signature="v",
1041
access="readwrite",
1042
byte_arrays=False):
518
def dbus_service_property(dbus_interface, signature=u"v",
519
access=u"readwrite", byte_arrays=False):
1043
520
"""Decorators for marking methods of a DBusObjectWithProperties to
1044
521
become properties on the D-Bus.
1045
522
1052
529
"""
1053
530
# Encoding deeply encoded byte arrays is not supported yet by the
1054
531
# "Set" method, so we fail early here:
1055
if byte_arrays and signature != "ay":
1056
raise ValueError("Byte arrays not supported for non-'ay'"
1057
" signature {!r}".format(signature))
1058
532
if byte_arrays and signature != u"ay":
533
raise ValueError(u"Byte arrays not supported for non-'ay'"
534
u" signature %r" % signature)
1059
535
def decorator(func):
1060
536
func._dbus_is_property = True
1061
537
func._dbus_interface = dbus_interface
1062
538
func._dbus_signature = signature
1063
539
func._dbus_access = access
1064
540
func._dbus_name = func.__name__
1065
if func._dbus_name.endswith("_dbus_property"):
541
if func._dbus_name.endswith(u"_dbus_property"):
1066
542
func._dbus_name = func._dbus_name[:-14]
1067
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
1068
return func
1069
1070
return decorator
1071
1072
1073
def dbus_interface_annotations(dbus_interface):
1074
"""Decorator for marking functions returning interface annotations
1075
1076
Usage:
1077
1078
@dbus_interface_annotations("org.example.Interface")
1079
def _foo(self): # Function name does not matter
1080
return {"org.freedesktop.DBus.Deprecated": "true",
1081
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1082
"false"}
1083
"""
1084
1085
def decorator(func):
1086
func._dbus_is_interface = True
1087
func._dbus_interface = dbus_interface
1088
func._dbus_name = dbus_interface
1089
return func
1090
1091
return decorator
1092
1093
1094
def dbus_annotations(annotations):
1095
"""Decorator to annotate D-Bus methods, signals or properties
1096
Usage:
1097
1098
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1099
"org.freedesktop.DBus.Property."
1100
"EmitsChangedSignal": "false"})
1101
@dbus_service_property("org.example.Interface", signature="b",
1102
access="r")
1103
def Property_dbus_property(self):
1104
return dbus.Boolean(False)
1105
1106
See also the DBusObjectWithAnnotations class.
1107
"""
1108
1109
def decorator(func):
1110
func._dbus_annotations = annotations
1111
return func
1112
543
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
544
return func
1113
545
return decorator
1114
546
1115
547
1116
548
class DBusPropertyException(dbus.exceptions.DBusException):
1117
549
"""A base class for D-Bus property-related exceptions
1118
550
"""
1119
pass
551
def __unicode__(self):
552
return unicode(str(self))
1120
553
1121
554
1122
555
class DBusPropertyAccessException(DBusPropertyException):
1131
564
pass
1132
565
1133
566
1134
class DBusObjectWithAnnotations(dbus.service.Object):
1135
"""A D-Bus object with annotations.
1136
1137
Classes inheriting from this can use the dbus_annotations
1138
decorator to add annotations to methods or signals.
1139
"""
1140
1141
@staticmethod
1142
def _is_dbus_thing(thing):
1143
"""Returns a function testing if an attribute is a D-Bus thing
1144
1145
If called like _is_dbus_thing("method") it returns a function
1146
suitable for use as predicate to inspect.getmembers().
1147
"""
1148
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1149
False)
1150
1151
def _get_all_dbus_things(self, thing):
1152
"""Returns a generator of (name, attribute) pairs
1153
"""
1154
return ((getattr(athing.__get__(self), "_dbus_name", name),
1155
athing.__get__(self))
1156
for cls in self.__class__.__mro__
1157
for name, athing in
1158
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1159
1160
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1161
out_signature = "s",
1162
path_keyword = 'object_path',
1163
connection_keyword = 'connection')
1164
def Introspect(self, object_path, connection):
1165
"""Overloading of standard D-Bus method.
1166
1167
Inserts annotation tags on methods and signals.
1168
"""
1169
xmlstring = dbus.service.Object.Introspect(self, object_path,
1170
connection)
1171
try:
1172
document = xml.dom.minidom.parseString(xmlstring)
1173
1174
for if_tag in document.getElementsByTagName("interface"):
1175
# Add annotation tags
1176
for typ in ("method", "signal"):
1177
for tag in if_tag.getElementsByTagName(typ):
1178
annots = dict()
1179
for name, prop in (self.
1180
_get_all_dbus_things(typ)):
1181
if (name == tag.getAttribute("name")
1182
and prop._dbus_interface
1183
== if_tag.getAttribute("name")):
1184
annots.update(getattr(
1185
prop, "_dbus_annotations", {}))
1186
for name, value in annots.items():
1187
ann_tag = document.createElement(
1188
"annotation")
1189
ann_tag.setAttribute("name", name)
1190
ann_tag.setAttribute("value", value)
1191
tag.appendChild(ann_tag)
1192
# Add interface annotation tags
1193
for annotation, value in dict(
1194
itertools.chain.from_iterable(
1195
annotations().items()
1196
for name, annotations
1197
in self._get_all_dbus_things("interface")
1198
if name == if_tag.getAttribute("name")
1199
)).items():
1200
ann_tag = document.createElement("annotation")
1201
ann_tag.setAttribute("name", annotation)
1202
ann_tag.setAttribute("value", value)
1203
if_tag.appendChild(ann_tag)
1204
# Fix argument name for the Introspect method itself
1205
if (if_tag.getAttribute("name")
1206
== dbus.INTROSPECTABLE_IFACE):
1207
for cn in if_tag.getElementsByTagName("method"):
1208
if cn.getAttribute("name") == "Introspect":
1209
for arg in cn.getElementsByTagName("arg"):
1210
if (arg.getAttribute("direction")
1211
== "out"):
1212
arg.setAttribute("name",
1213
"xml_data")
1214
xmlstring = document.toxml("utf-8")
1215
document.unlink()
1216
except (AttributeError, xml.dom.DOMException,
1217
xml.parsers.expat.ExpatError) as error:
1218
logger.error("Failed to override Introspection method",
1219
exc_info=error)
1220
return xmlstring
1221
1222
1223
class DBusObjectWithProperties(DBusObjectWithAnnotations):
567
class DBusObjectWithProperties(dbus.service.Object):
1224
568
"""A D-Bus object with properties.
1225
569
1226
570
Classes inheriting from this can use the dbus_service_property
1227
571
decorator to expose methods as D-Bus properties. It exposes the
1228
572
standard Get(), Set(), and GetAll() methods on the D-Bus.
1229
573
"""
1230
574
575
@staticmethod
576
def _is_dbus_property(obj):
577
return getattr(obj, u"_dbus_is_property", False)
578
579
def _get_all_dbus_properties(self):
580
"""Returns a generator of (name, attribute) pairs
581
"""
582
return ((prop._dbus_name, prop)
583
for name, prop in
584
inspect.getmembers(self, self._is_dbus_property))
585
1231
586
def _get_dbus_property(self, interface_name, property_name):
1232
587
"""Returns a bound method if one exists which is a D-Bus
1233
588
property with the specified name and interface.
1234
589
"""
1235
for cls in self.__class__.__mro__:
1236
for name, value in inspect.getmembers(
1237
cls, self._is_dbus_thing("property")):
1238
if (value._dbus_name == property_name
1239
and value._dbus_interface == interface_name):
1240
return value.__get__(self)
1241
590
for name in (property_name,
591
property_name + u"_dbus_property"):
592
prop = getattr(self, name, None)
593
if (prop is None
594
or not self._is_dbus_property(prop)
595
or prop._dbus_name != property_name
596
or (interface_name and prop._dbus_interface
597
and interface_name != prop._dbus_interface)):
598
continue
599
return prop
1242
600
# No such property
1243
raise DBusPropertyNotFound("{}:{}.{}".format(
1244
self.dbus_object_path, interface_name, property_name))
1245
1246
@classmethod
1247
def _get_all_interface_names(cls):
1248
"""Get a sequence of all interfaces supported by an object"""
1249
return (name for name in set(getattr(getattr(x, attr),
1250
"_dbus_interface", None)
1251
for x in (inspect.getmro(cls))
1252
for attr in dir(x))
1253
if name is not None)
1254
1255
@dbus.service.method(dbus.PROPERTIES_IFACE,
1256
in_signature="ss",
1257
out_signature="v")
601
raise DBusPropertyNotFound(self.dbus_object_path + u":"
602
+ interface_name + u"."
603
+ property_name)
604
605
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
606
out_signature=u"v")
1258
607
def Get(self, interface_name, property_name):
1259
608
"""Standard D-Bus property Get() method, see D-Bus standard.
1260
609
"""
1261
610
prop = self._get_dbus_property(interface_name, property_name)
1262
if prop._dbus_access == "write":
611
if prop._dbus_access == u"write":
1263
612
raise DBusPropertyAccessException(property_name)
1264
613
value = prop()
1265
if not hasattr(value, "variant_level"):
614
if not hasattr(value, u"variant_level"):
1266
615
return value
1267
616
return type(value)(value, variant_level=value.variant_level+1)
1268
617
1269
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
618
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
1270
619
def Set(self, interface_name, property_name, value):
1271
620
"""Standard D-Bus property Set() method, see D-Bus standard.
1272
621
"""
1273
622
prop = self._get_dbus_property(interface_name, property_name)
1274
if prop._dbus_access == "read":
623
if prop._dbus_access == u"read":
1275
624
raise DBusPropertyAccessException(property_name)
1276
if prop._dbus_get_args_options["byte_arrays"]:
625
if prop._dbus_get_args_options[u"byte_arrays"]:
1277
626
# The byte_arrays option is not supported yet on
1278
627
# signatures other than "ay".
1279
if prop._dbus_signature != "ay":
1280
raise ValueError("Byte arrays not supported for non-"
1281
"'ay' signature {!r}"
1282
.format(prop._dbus_signature))
1283
value = dbus.ByteArray(b''.join(chr(byte)
1284
for byte in value))
628
if prop._dbus_signature != u"ay":
629
raise ValueError
630
value = dbus.ByteArray(''.join(unichr(byte)
631
for byte in value))
1285
632
prop(value)
1286
633
1287
@dbus.service.method(dbus.PROPERTIES_IFACE,
1288
in_signature="s",
1289
out_signature="a{sv}")
634
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
635
out_signature=u"a{sv}")
1290
636
def GetAll(self, interface_name):
1291
637
"""Standard D-Bus property GetAll() method, see D-Bus
1292
638
standard.
1293
639
1294
640
Note: Will not include properties with access="write".
1295
641
"""
1296
properties = {}
1297
for name, prop in self._get_all_dbus_things("property"):
642
all = {}
643
for name, prop in self._get_all_dbus_properties():
1298
644
if (interface_name
1299
645
and interface_name != prop._dbus_interface):
1300
646
# Interface non-empty but did not match
1301
647
continue
1302
648
# Ignore write-only properties
1303
if prop._dbus_access == "write":
649
if prop._dbus_access == u"write":
1304
650
continue
1305
651
value = prop()
1306
if not hasattr(value, "variant_level"):
1307
properties[name] = value
652
if not hasattr(value, u"variant_level"):
653
all[name] = value
1308
654
continue
1309
properties[name] = type(value)(
1310
value, variant_level = value.variant_level + 1)
1311
return dbus.Dictionary(properties, signature="sv")
1312
1313
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1314
def PropertiesChanged(self, interface_name, changed_properties,
1315
invalidated_properties):
1316
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1317
standard.
1318
"""
1319
pass
655
all[name] = type(value)(value, variant_level=
656
value.variant_level+1)
657
return dbus.Dictionary(all, signature=u"sv")
1320
658
1321
659
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1322
out_signature="s",
660
out_signature=u"s",
1323
661
path_keyword='object_path',
1324
662
connection_keyword='connection')
1325
663
def Introspect(self, object_path, connection):
1326
"""Overloading of standard D-Bus method.
1327
1328
Inserts property tags and interface annotation tags.
664
"""Standard D-Bus method, overloaded to insert property tags.
1329
665
"""
1330
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1331
object_path,
1332
connection)
666
xmlstring = dbus.service.Object.Introspect(self, object_path,
667
connection)
1333
668
try:
1334
669
document = xml.dom.minidom.parseString(xmlstring)
1335
1336
670
def make_tag(document, name, prop):
1337
e = document.createElement("property")
1338
e.setAttribute("name", name)
1339
e.setAttribute("type", prop._dbus_signature)
1340
e.setAttribute("access", prop._dbus_access)
671
e = document.createElement(u"property")
672
e.setAttribute(u"name", name)
673
e.setAttribute(u"type", prop._dbus_signature)
674
e.setAttribute(u"access", prop._dbus_access)
1341
675
return e
1342
1343
for if_tag in document.getElementsByTagName("interface"):
1344
# Add property tags
676
for if_tag in document.getElementsByTagName(u"interface"):
1345
677
for tag in (make_tag(document, name, prop)
1346
678
for name, prop
1347
in self._get_all_dbus_things("property")
679
in self._get_all_dbus_properties()
1348
680
if prop._dbus_interface
1349
== if_tag.getAttribute("name")):
681
== if_tag.getAttribute(u"name")):
1350
682
if_tag.appendChild(tag)
1351
# Add annotation tags for properties
1352
for tag in if_tag.getElementsByTagName("property"):
1353
annots = dict()
1354
for name, prop in self._get_all_dbus_things(
1355
"property"):
1356
if (name == tag.getAttribute("name")
1357
and prop._dbus_interface
1358
== if_tag.getAttribute("name")):
1359
annots.update(getattr(
1360
prop, "_dbus_annotations", {}))
1361
for name, value in annots.items():
1362
ann_tag = document.createElement(
1363
"annotation")
1364
ann_tag.setAttribute("name", name)
1365
ann_tag.setAttribute("value", value)
1366
tag.appendChild(ann_tag)
1367
683
# Add the names to the return values for the
1368
684
# "org.freedesktop.DBus.Properties" methods
1369
if (if_tag.getAttribute("name")
1370
== "org.freedesktop.DBus.Properties"):
1371
for cn in if_tag.getElementsByTagName("method"):
1372
if cn.getAttribute("name") == "Get":
1373
for arg in cn.getElementsByTagName("arg"):
1374
if (arg.getAttribute("direction")
1375
== "out"):
1376
arg.setAttribute("name", "value")
1377
elif cn.getAttribute("name") == "GetAll":
1378
for arg in cn.getElementsByTagName("arg"):
1379
if (arg.getAttribute("direction")
1380
== "out"):
1381
arg.setAttribute("name", "props")
1382
xmlstring = document.toxml("utf-8")
1383
document.unlink()
1384
except (AttributeError, xml.dom.DOMException,
1385
xml.parsers.expat.ExpatError) as error:
1386
logger.error("Failed to override Introspection method",
1387
exc_info=error)
1388
return xmlstring
1389
1390
try:
1391
dbus.OBJECT_MANAGER_IFACE
1392
except AttributeError:
1393
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1394
1395
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1396
"""A D-Bus object with an ObjectManager.
1397
1398
Classes inheriting from this exposes the standard
1399
GetManagedObjects call and the InterfacesAdded and
1400
InterfacesRemoved signals on the standard
1401
"org.freedesktop.DBus.ObjectManager" interface.
1402
1403
Note: No signals are sent automatically; they must be sent
1404
manually.
1405
"""
1406
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1407
out_signature = "a{oa{sa{sv}}}")
1408
def GetManagedObjects(self):
1409
"""This function must be overridden"""
1410
raise NotImplementedError()
1411
1412
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1413
signature = "oa{sa{sv}}")
1414
def InterfacesAdded(self, object_path, interfaces_and_properties):
1415
pass
1416
1417
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature = "oas")
1418
def InterfacesRemoved(self, object_path, interfaces):
1419
pass
1420
1421
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1422
out_signature = "s",
1423
path_keyword = 'object_path',
1424
connection_keyword = 'connection')
1425
def Introspect(self, object_path, connection):
1426
"""Overloading of standard D-Bus method.
1427
1428
Override return argument name of GetManagedObjects to be
1429
"objpath_interfaces_and_properties"
1430
"""
1431
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1432
object_path,
1433
connection)
1434
try:
1435
document = xml.dom.minidom.parseString(xmlstring)
1436
1437
for if_tag in document.getElementsByTagName("interface"):
1438
# Fix argument name for the GetManagedObjects method
1439
if (if_tag.getAttribute("name")
1440
== dbus.OBJECT_MANAGER_IFACE):
1441
for cn in if_tag.getElementsByTagName("method"):
1442
if (cn.getAttribute("name")
1443
== "GetManagedObjects"):
1444
for arg in cn.getElementsByTagName("arg"):
1445
if (arg.getAttribute("direction")
1446
== "out"):
1447
arg.setAttribute(
1448
"name",
1449
"objpath_interfaces"
1450
"_and_properties")
1451
xmlstring = document.toxml("utf-8")
1452
document.unlink()
1453
except (AttributeError, xml.dom.DOMException,
1454
xml.parsers.expat.ExpatError) as error:
1455
logger.error("Failed to override Introspection method",
1456
exc_info = error)
1457
return xmlstring
1458
1459
def datetime_to_dbus(dt, variant_level=0):
1460
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1461
if dt is None:
1462
return dbus.String("", variant_level = variant_level)
1463
return dbus.String(dt.isoformat(), variant_level=variant_level)
1464
1465
1466
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1467
"""A class decorator; applied to a subclass of
1468
dbus.service.Object, it will add alternate D-Bus attributes with
1469
interface names according to the "alt_interface_names" mapping.
1470
Usage:
1471
1472
@alternate_dbus_interfaces({"org.example.Interface":
1473
"net.example.AlternateInterface"})
1474
class SampleDBusObject(dbus.service.Object):
1475
@dbus.service.method("org.example.Interface")
1476
def SampleDBusMethod():
1477
pass
1478
1479
The above "SampleDBusMethod" on "SampleDBusObject" will be
1480
reachable via two interfaces: "org.example.Interface" and
1481
"net.example.AlternateInterface", the latter of which will have
1482
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1483
"true", unless "deprecate" is passed with a False value.
1484
1485
This works for methods and signals, and also for D-Bus properties
1486
(from DBusObjectWithProperties) and interfaces (from the
1487
dbus_interface_annotations decorator).
1488
"""
1489
1490
def wrapper(cls):
1491
for orig_interface_name, alt_interface_name in (
1492
alt_interface_names.items()):
1493
attr = {}
1494
interface_names = set()
1495
# Go though all attributes of the class
1496
for attrname, attribute in inspect.getmembers(cls):
1497
# Ignore non-D-Bus attributes, and D-Bus attributes
1498
# with the wrong interface name
1499
if (not hasattr(attribute, "_dbus_interface")
1500
or not attribute._dbus_interface.startswith(
1501
orig_interface_name)):
1502
continue
1503
# Create an alternate D-Bus interface name based on
1504
# the current name
1505
alt_interface = attribute._dbus_interface.replace(
1506
orig_interface_name, alt_interface_name)
1507
interface_names.add(alt_interface)
1508
# Is this a D-Bus signal?
1509
if getattr(attribute, "_dbus_is_signal", False):
1510
if sys.version_info.major == 2:
1511
# Extract the original non-method undecorated
1512
# function by black magic
1513
nonmethod_func = (dict(
1514
zip(attribute.func_code.co_freevars,
1515
attribute.__closure__))
1516
["func"].cell_contents)
1517
else:
1518
nonmethod_func = attribute
1519
# Create a new, but exactly alike, function
1520
# object, and decorate it to be a new D-Bus signal
1521
# with the alternate D-Bus interface name
1522
if sys.version_info.major == 2:
1523
new_function = types.FunctionType(
1524
nonmethod_func.func_code,
1525
nonmethod_func.func_globals,
1526
nonmethod_func.func_name,
1527
nonmethod_func.func_defaults,
1528
nonmethod_func.func_closure)
1529
else:
1530
new_function = types.FunctionType(
1531
nonmethod_func.__code__,
1532
nonmethod_func.__globals__,
1533
nonmethod_func.__name__,
1534
nonmethod_func.__defaults__,
1535
nonmethod_func.__closure__)
1536
new_function = (dbus.service.signal(
1537
alt_interface,
1538
attribute._dbus_signature)(new_function))
1539
# Copy annotations, if any
1540
try:
1541
new_function._dbus_annotations = dict(
1542
attribute._dbus_annotations)
1543
except AttributeError:
1544
pass
1545
# Define a creator of a function to call both the
1546
# original and alternate functions, so both the
1547
# original and alternate signals gets sent when
1548
# the function is called
1549
def fixscope(func1, func2):
1550
"""This function is a scope container to pass
1551
func1 and func2 to the "call_both" function
1552
outside of its arguments"""
1553
1554
@functools.wraps(func2)
1555
def call_both(*args, **kwargs):
1556
"""This function will emit two D-Bus
1557
signals by calling func1 and func2"""
1558
func1(*args, **kwargs)
1559
func2(*args, **kwargs)
1560
# Make wrapper function look like a D-Bus signal
1561
for name, attr in inspect.getmembers(func2):
1562
if name.startswith("_dbus_"):
1563
setattr(call_both, name, attr)
1564
1565
return call_both
1566
# Create the "call_both" function and add it to
1567
# the class
1568
attr[attrname] = fixscope(attribute, new_function)
1569
# Is this a D-Bus method?
1570
elif getattr(attribute, "_dbus_is_method", False):
1571
# Create a new, but exactly alike, function
1572
# object. Decorate it to be a new D-Bus method
1573
# with the alternate D-Bus interface name. Add it
1574
# to the class.
1575
attr[attrname] = (
1576
dbus.service.method(
1577
alt_interface,
1578
attribute._dbus_in_signature,
1579
attribute._dbus_out_signature)
1580
(types.FunctionType(attribute.func_code,
1581
attribute.func_globals,
1582
attribute.func_name,
1583
attribute.func_defaults,
1584
attribute.func_closure)))
1585
# Copy annotations, if any
1586
try:
1587
attr[attrname]._dbus_annotations = dict(
1588
attribute._dbus_annotations)
1589
except AttributeError:
1590
pass
1591
# Is this a D-Bus property?
1592
elif getattr(attribute, "_dbus_is_property", False):
1593
# Create a new, but exactly alike, function
1594
# object, and decorate it to be a new D-Bus
1595
# property with the alternate D-Bus interface
1596
# name. Add it to the class.
1597
attr[attrname] = (dbus_service_property(
1598
alt_interface, attribute._dbus_signature,
1599
attribute._dbus_access,
1600
attribute._dbus_get_args_options
1601
["byte_arrays"])
1602
(types.FunctionType(
1603
attribute.func_code,
1604
attribute.func_globals,
1605
attribute.func_name,
1606
attribute.func_defaults,
1607
attribute.func_closure)))
1608
# Copy annotations, if any
1609
try:
1610
attr[attrname]._dbus_annotations = dict(
1611
attribute._dbus_annotations)
1612
except AttributeError:
1613
pass
1614
# Is this a D-Bus interface?
1615
elif getattr(attribute, "_dbus_is_interface", False):
1616
# Create a new, but exactly alike, function
1617
# object. Decorate it to be a new D-Bus interface
1618
# with the alternate D-Bus interface name. Add it
1619
# to the class.
1620
attr[attrname] = (
1621
dbus_interface_annotations(alt_interface)
1622
(types.FunctionType(attribute.func_code,
1623
attribute.func_globals,
1624
attribute.func_name,
1625
attribute.func_defaults,
1626
attribute.func_closure)))
1627
if deprecate:
1628
# Deprecate all alternate interfaces
1629
iname="_AlternateDBusNames_interface_annotation{}"
1630
for interface_name in interface_names:
1631
1632
@dbus_interface_annotations(interface_name)
1633
def func(self):
1634
return { "org.freedesktop.DBus.Deprecated":
1635
"true" }
1636
# Find an unused name
1637
for aname in (iname.format(i)
1638
for i in itertools.count()):
1639
if aname not in attr:
1640
attr[aname] = func
1641
break
1642
if interface_names:
1643
# Replace the class with a new subclass of it with
1644
# methods, signals, etc. as created above.
1645
cls = type(b"{}Alternate".format(cls.__name__),
1646
(cls, ), attr)
1647
return cls
1648
1649
return wrapper
1650
1651
1652
@alternate_dbus_interfaces({"se.recompile.Mandos":
1653
"se.bsnet.fukt.Mandos"})
685
if (if_tag.getAttribute(u"name")
686
== u"org.freedesktop.DBus.Properties"):
687
for cn in if_tag.getElementsByTagName(u"method"):
688
if cn.getAttribute(u"name") == u"Get":
689
for arg in cn.getElementsByTagName(u"arg"):
690
if (arg.getAttribute(u"direction")
691
== u"out"):
692
arg.setAttribute(u"name", u"value")
693
elif cn.getAttribute(u"name") == u"GetAll":
694
for arg in cn.getElementsByTagName(u"arg"):
695
if (arg.getAttribute(u"direction")
696
== u"out"):
697
arg.setAttribute(u"name", u"props")
698
xmlstring = document.toxml(u"utf-8")
699
document.unlink()
700
except (AttributeError, xml.dom.DOMException,
701
xml.parsers.expat.ExpatError), error:
702
logger.error(u"Failed to override Introspection method",
703
error)
704
return xmlstring
705
706
1654
707
class ClientDBus(Client, DBusObjectWithProperties):
1655
708
"""A Client class using D-Bus
1656
709
1660
713
"""
1661
714
1662
715
runtime_expansions = (Client.runtime_expansions
1663
+ ("dbus_object_path", ))
1664
1665
_interface = "se.recompile.Mandos.Client"
716
+ (u"dbus_object_path",))
1666
717
1667
718
# dbus.service.Object doesn't use super(), so we can't either.
1668
719
1669
720
def __init__(self, bus = None, *args, **kwargs):
721
self._approvals_pending = 0
1670
722
self.bus = bus
1671
723
Client.__init__(self, *args, **kwargs)
1672
724
# Only now, when this client is initialized, can it show up on
1673
725
# the D-Bus
1674
client_object_name = str(self.name).translate(
1675
{ord("."): ord("_"),
1676
ord("-"): ord("_")})
1677
self.dbus_object_path = dbus.ObjectPath(
1678
"/clients/" + client_object_name)
726
self.dbus_object_path = (dbus.ObjectPath
727
(u"/clients/"
728
+ self.name.replace(u".", u"_")))
1679
729
DBusObjectWithProperties.__init__(self, self.bus,
1680
730
self.dbus_object_path)
1681
1682
def notifychangeproperty(transform_func, dbus_name,
1683
type_func=lambda x: x,
1684
variant_level=1,
1685
invalidate_only=False,
1686
_interface=_interface):
1687
""" Modify a variable so that it's a property which announces
1688
its changes to DBus.
1689
1690
transform_fun: Function that takes a value and a variant_level
1691
and transforms it to a D-Bus type.
1692
dbus_name: D-Bus name of the variable
1693
type_func: Function that transform the value before sending it
1694
to the D-Bus. Default: no transform
1695
variant_level: D-Bus variant level. Default: 1
1696
"""
1697
attrname = "_{}".format(dbus_name)
1698
1699
def setter(self, value):
1700
if hasattr(self, "dbus_object_path"):
1701
if (not hasattr(self, attrname) or
1702
type_func(getattr(self, attrname, None))
1703
!= type_func(value)):
1704
if invalidate_only:
1705
self.PropertiesChanged(
1706
_interface, dbus.Dictionary(),
1707
dbus.Array((dbus_name, )))
1708
else:
1709
dbus_value = transform_func(
1710
type_func(value),
1711
variant_level = variant_level)
1712
self.PropertyChanged(dbus.String(dbus_name),
1713
dbus_value)
1714
self.PropertiesChanged(
1715
_interface,
1716
dbus.Dictionary({ dbus.String(dbus_name):
1717
dbus_value }),
1718
dbus.Array())
1719
setattr(self, attrname, value)
1720
1721
return property(lambda self: getattr(self, attrname), setter)
1722
1723
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1724
approvals_pending = notifychangeproperty(dbus.Boolean,
1725
"ApprovalPending",
1726
type_func = bool)
1727
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1728
last_enabled = notifychangeproperty(datetime_to_dbus,
1729
"LastEnabled")
1730
checker = notifychangeproperty(
1731
dbus.Boolean, "CheckerRunning",
1732
type_func = lambda checker: checker is not None)
1733
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1734
"LastCheckedOK")
1735
last_checker_status = notifychangeproperty(dbus.Int16,
1736
"LastCheckerStatus")
1737
last_approval_request = notifychangeproperty(
1738
datetime_to_dbus, "LastApprovalRequest")
1739
approved_by_default = notifychangeproperty(dbus.Boolean,
1740
"ApprovedByDefault")
1741
approval_delay = notifychangeproperty(
1742
dbus.UInt64, "ApprovalDelay",
1743
type_func = lambda td: td.total_seconds() * 1000)
1744
approval_duration = notifychangeproperty(
1745
dbus.UInt64, "ApprovalDuration",
1746
type_func = lambda td: td.total_seconds() * 1000)
1747
host = notifychangeproperty(dbus.String, "Host")
1748
timeout = notifychangeproperty(
1749
dbus.UInt64, "Timeout",
1750
type_func = lambda td: td.total_seconds() * 1000)
1751
extended_timeout = notifychangeproperty(
1752
dbus.UInt64, "ExtendedTimeout",
1753
type_func = lambda td: td.total_seconds() * 1000)
1754
interval = notifychangeproperty(
1755
dbus.UInt64, "Interval",
1756
type_func = lambda td: td.total_seconds() * 1000)
1757
checker_command = notifychangeproperty(dbus.String, "Checker")
1758
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1759
invalidate_only=True)
1760
1761
del notifychangeproperty
731
732
def _get_approvals_pending(self):
733
return self._approvals_pending
734
def _set_approvals_pending(self, value):
735
old_value = self._approvals_pending
736
self._approvals_pending = value
737
bval = bool(value)
738
if (hasattr(self, "dbus_object_path")
739
and bval is not bool(old_value)):
740
dbus_bool = dbus.Boolean(bval, variant_level=1)
741
self.PropertyChanged(dbus.String(u"ApprovalPending"),
742
dbus_bool)
743
744
approvals_pending = property(_get_approvals_pending,
745
_set_approvals_pending)
746
del _get_approvals_pending, _set_approvals_pending
747
748
@staticmethod
749
def _datetime_to_dbus(dt, variant_level=0):
750
"""Convert a UTC datetime.datetime() to a D-Bus type."""
751
return dbus.String(dt.isoformat(),
752
variant_level=variant_level)
753
754
def enable(self):
755
oldstate = getattr(self, u"enabled", False)
756
r = Client.enable(self)
757
if oldstate != self.enabled:
758
# Emit D-Bus signals
759
self.PropertyChanged(dbus.String(u"Enabled"),
760
dbus.Boolean(True, variant_level=1))
761
self.PropertyChanged(
762
dbus.String(u"LastEnabled"),
763
self._datetime_to_dbus(self.last_enabled,
764
variant_level=1))
765
return r
766
767
def disable(self, quiet = False):
768
oldstate = getattr(self, u"enabled", False)
769
r = Client.disable(self, quiet=quiet)
770
if not quiet and oldstate != self.enabled:
771
# Emit D-Bus signal
772
self.PropertyChanged(dbus.String(u"Enabled"),
773
dbus.Boolean(False, variant_level=1))
774
return r
1762
775
1763
776
def __del__(self, *args, **kwargs):
1764
777
try:
1765
778
self.remove_from_connection()
1766
779
except LookupError:
1767
780
pass
1768
if hasattr(DBusObjectWithProperties, "__del__"):
781
if hasattr(DBusObjectWithProperties, u"__del__"):
1769
782
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1770
783
Client.__del__(self, *args, **kwargs)
1771
784
1772
def checker_callback(self, source, condition,
1773
connection, command, *args, **kwargs):
1774
ret = Client.checker_callback(self, source, condition,
1775
connection, command, *args,
1776
**kwargs)
1777
exitstatus = self.last_checker_status
1778
if exitstatus >= 0:
785
def checker_callback(self, pid, condition, command,
786
*args, **kwargs):
787
self.checker_callback_tag = None
788
self.checker = None
789
# Emit D-Bus signal
790
self.PropertyChanged(dbus.String(u"CheckerRunning"),
791
dbus.Boolean(False, variant_level=1))
792
if os.WIFEXITED(condition):
793
exitstatus = os.WEXITSTATUS(condition)
1779
794
# Emit D-Bus signal
1780
795
self.CheckerCompleted(dbus.Int16(exitstatus),
1781
# This is specific to GNU libC
1782
dbus.Int64(exitstatus << 8),
796
dbus.Int64(condition),
1783
797
dbus.String(command))
1784
798
else:
1785
799
# Emit D-Bus signal
1786
800
self.CheckerCompleted(dbus.Int16(-1),
1787
dbus.Int64(
1788
# This is specific to GNU libC
1789
(exitstatus << 8)
1790
| self.last_checker_signal),
801
dbus.Int64(condition),
1791
802
dbus.String(command))
1792
return ret
803
804
return Client.checker_callback(self, pid, condition, command,
805
*args, **kwargs)
806
807
def checked_ok(self, *args, **kwargs):
808
r = Client.checked_ok(self, *args, **kwargs)
809
# Emit D-Bus signal
810
self.PropertyChanged(
811
dbus.String(u"LastCheckedOK"),
812
(self._datetime_to_dbus(self.last_checked_ok,
813
variant_level=1)))
814
return r
1793
815
1794
816
def start_checker(self, *args, **kwargs):
1795
old_checker_pid = getattr(self.checker, "pid", None)
817
old_checker = self.checker
818
if self.checker is not None:
819
old_checker_pid = self.checker.pid
820
else:
821
old_checker_pid = None
1796
822
r = Client.start_checker(self, *args, **kwargs)
1797
823
# Only if new checker process was started
1798
824
if (self.checker is not None
1799
825
and old_checker_pid != self.checker.pid):
1800
826
# Emit D-Bus signal
1801
827
self.CheckerStarted(self.current_checker_command)
828
self.PropertyChanged(
829
dbus.String(u"CheckerRunning"),
830
dbus.Boolean(True, variant_level=1))
1802
831
return r
1803
832
833
def stop_checker(self, *args, **kwargs):
834
old_checker = getattr(self, u"checker", None)
835
r = Client.stop_checker(self, *args, **kwargs)
836
if (old_checker is not None
837
and getattr(self, u"checker", None) is None):
838
self.PropertyChanged(dbus.String(u"CheckerRunning"),
839
dbus.Boolean(False, variant_level=1))
840
return r
841
1804
842
def _reset_approved(self):
1805
self.approved = None
843
self._approved = None
1806
844
return False
1807
845
1808
846
def approve(self, value=True):
1809
self.approved = value
1810
GObject.timeout_add(int(self.approval_duration.total_seconds()
1811
* 1000), self._reset_approved)
1812
847
self.send_changedstate()
848
self._approved = value
849
gobject.timeout_add(self._timedelta_to_milliseconds
850
(self.approval_duration),
851
self._reset_approved)
852
1813
853
1814
854
## D-Bus methods, signals & properties
1815
1816
## Interfaces
855
_interface = u"se.bsnet.fukt.Mandos.Client"
1817
856
1818
857
## Signals
1819
858
1820
859
# CheckerCompleted - signal
1821
@dbus.service.signal(_interface, signature="nxs")
860
@dbus.service.signal(_interface, signature=u"nxs")
1822
861
def CheckerCompleted(self, exitcode, waitstatus, command):
1823
862
"D-Bus signal"
1824
863
pass
1825
864
1826
865
# CheckerStarted - signal
1827
@dbus.service.signal(_interface, signature="s")
866
@dbus.service.signal(_interface, signature=u"s")
1828
867
def CheckerStarted(self, command):
1829
868
"D-Bus signal"
1830
869
pass
1831
870
1832
871
# PropertyChanged - signal
1833
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1834
@dbus.service.signal(_interface, signature="sv")
872
@dbus.service.signal(_interface, signature=u"sv")
1835
873
def PropertyChanged(self, property, value):
1836
874
"D-Bus signal"
1837
875
pass
1846
884
pass
1847
885
1848
886
# Rejected - signal
1849
@dbus.service.signal(_interface, signature="s")
887
@dbus.service.signal(_interface, signature=u"s")
1850
888
def Rejected(self, reason):
1851
889
"D-Bus signal"
1852
890
pass
1853
891
1854
892
# NeedApproval - signal
1855
@dbus.service.signal(_interface, signature="tb")
893
@dbus.service.signal(_interface, signature=u"tb")
1856
894
def NeedApproval(self, timeout, default):
1857
895
"D-Bus signal"
1858
return self.need_approval()
896
pass
1859
897
1860
898
## Methods
1861
899
1862
900
# Approve - method
1863
@dbus.service.method(_interface, in_signature="b")
901
@dbus.service.method(_interface, in_signature=u"b")
1864
902
def Approve(self, value):
1865
903
self.approve(value)
1866
904
1867
905
# CheckedOK - method
1868
906
@dbus.service.method(_interface)
1869
907
def CheckedOK(self):
1870
self.checked_ok()
908
return self.checked_ok()
1871
909
1872
910
# Enable - method
1873
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1874
911
@dbus.service.method(_interface)
1875
912
def Enable(self):
1876
913
"D-Bus method"
1877
914
self.enable()
1878
915
1879
916
# StartChecker - method
1880
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1881
917
@dbus.service.method(_interface)
1882
918
def StartChecker(self):
1883
919
"D-Bus method"
1884
920
self.start_checker()
1885
921
1886
922
# Disable - method
1887
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1888
923
@dbus.service.method(_interface)
1889
924
def Disable(self):
1890
925
"D-Bus method"
1891
926
self.disable()
1892
927
1893
928
# StopChecker - method
1894
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1895
929
@dbus.service.method(_interface)
1896
930
def StopChecker(self):
1897
931
self.stop_checker()
1899
933
## Properties
1900
934
1901
935
# ApprovalPending - property
1902
@dbus_service_property(_interface, signature="b", access="read")
936
@dbus_service_property(_interface, signature=u"b", access=u"read")
1903
937
def ApprovalPending_dbus_property(self):
1904
938
return dbus.Boolean(bool(self.approvals_pending))
1905
939
1906
940
# ApprovedByDefault - property
1907
@dbus_service_property(_interface,
1908
signature="b",
1909
access="readwrite")
941
@dbus_service_property(_interface, signature=u"b",
942
access=u"readwrite")
1910
943
def ApprovedByDefault_dbus_property(self, value=None):
1911
944
if value is None: # get
1912
945
return dbus.Boolean(self.approved_by_default)
1913
946
self.approved_by_default = bool(value)
947
# Emit D-Bus signal
948
self.PropertyChanged(dbus.String(u"ApprovedByDefault"),
949
dbus.Boolean(value, variant_level=1))
1914
950
1915
951
# ApprovalDelay - property
1916
@dbus_service_property(_interface,
1917
signature="t",
1918
access="readwrite")
952
@dbus_service_property(_interface, signature=u"t",
953
access=u"readwrite")
1919
954
def ApprovalDelay_dbus_property(self, value=None):
1920
955
if value is None: # get
1921
return dbus.UInt64(self.approval_delay.total_seconds()
1922
* 1000)
956
return dbus.UInt64(self.approval_delay_milliseconds())
1923
957
self.approval_delay = datetime.timedelta(0, 0, 0, value)
958
# Emit D-Bus signal
959
self.PropertyChanged(dbus.String(u"ApprovalDelay"),
960
dbus.UInt64(value, variant_level=1))
1924
961
1925
962
# ApprovalDuration - property
1926
@dbus_service_property(_interface,
1927
signature="t",
1928
access="readwrite")
963
@dbus_service_property(_interface, signature=u"t",
964
access=u"readwrite")
1929
965
def ApprovalDuration_dbus_property(self, value=None):
1930
966
if value is None: # get
1931
return dbus.UInt64(self.approval_duration.total_seconds()
1932
* 1000)
967
return dbus.UInt64(self._timedelta_to_milliseconds(
968
self.approval_duration))
1933
969
self.approval_duration = datetime.timedelta(0, 0, 0, value)
970
# Emit D-Bus signal
971
self.PropertyChanged(dbus.String(u"ApprovalDuration"),
972
dbus.UInt64(value, variant_level=1))
1934
973
1935
974
# Name - property
1936
@dbus_annotations(
1937
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1938
@dbus_service_property(_interface, signature="s", access="read")
975
@dbus_service_property(_interface, signature=u"s", access=u"read")
1939
976
def Name_dbus_property(self):
1940
977
return dbus.String(self.name)
1941
978
1942
979
# Fingerprint - property
1943
@dbus_annotations(
1944
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1945
@dbus_service_property(_interface, signature="s", access="read")
980
@dbus_service_property(_interface, signature=u"s", access=u"read")
1946
981
def Fingerprint_dbus_property(self):
1947
982
return dbus.String(self.fingerprint)
1948
983
1949
984
# Host - property
1950
@dbus_service_property(_interface,
1951
signature="s",
1952
access="readwrite")
985
@dbus_service_property(_interface, signature=u"s",
986
access=u"readwrite")
1953
987
def Host_dbus_property(self, value=None):
1954
988
if value is None: # get
1955
989
return dbus.String(self.host)
1956
self.host = str(value)
990
self.host = value
991
# Emit D-Bus signal
992
self.PropertyChanged(dbus.String(u"Host"),
993
dbus.String(value, variant_level=1))
1957
994
1958
995
# Created - property
1959
@dbus_annotations(
1960
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1961
@dbus_service_property(_interface, signature="s", access="read")
996
@dbus_service_property(_interface, signature=u"s", access=u"read")
1962
997
def Created_dbus_property(self):
1963
return datetime_to_dbus(self.created)
998
return dbus.String(self._datetime_to_dbus(self.created))
1964
999
1965
1000
# LastEnabled - property
1966
@dbus_service_property(_interface, signature="s", access="read")
1001
@dbus_service_property(_interface, signature=u"s", access=u"read")
1967
1002
def LastEnabled_dbus_property(self):
1968
return datetime_to_dbus(self.last_enabled)
1003
if self.last_enabled is None:
1004
return dbus.String(u"")
1005
return dbus.String(self._datetime_to_dbus(self.last_enabled))
1969
1006
1970
1007
# Enabled - property
1971
@dbus_service_property(_interface,
1972
signature="b",
1973
access="readwrite")
1008
@dbus_service_property(_interface, signature=u"b",
1009
access=u"readwrite")
1974
1010
def Enabled_dbus_property(self, value=None):
1975
1011
if value is None: # get
1976
1012
return dbus.Boolean(self.enabled)
1980
1016
self.disable()
1981
1017
1982
1018
# LastCheckedOK - property
1983
@dbus_service_property(_interface,
1984
signature="s",
1985
access="readwrite")
1019
@dbus_service_property(_interface, signature=u"s",
1020
access=u"readwrite")
1986
1021
def LastCheckedOK_dbus_property(self, value=None):
1987
1022
if value is not None:
1988
1023
self.checked_ok()
1989
1024
return
1990
return datetime_to_dbus(self.last_checked_ok)
1991
1992
# LastCheckerStatus - property
1993
@dbus_service_property(_interface, signature="n", access="read")
1994
def LastCheckerStatus_dbus_property(self):
1995
return dbus.Int16(self.last_checker_status)
1996
1997
# Expires - property
1998
@dbus_service_property(_interface, signature="s", access="read")
1999
def Expires_dbus_property(self):
2000
return datetime_to_dbus(self.expires)
2001
2002
# LastApprovalRequest - property
2003
@dbus_service_property(_interface, signature="s", access="read")
2004
def LastApprovalRequest_dbus_property(self):
2005
return datetime_to_dbus(self.last_approval_request)
1025
if self.last_checked_ok is None:
1026
return dbus.String(u"")
1027
return dbus.String(self._datetime_to_dbus(self
1028
.last_checked_ok))
2006
1029
2007
1030
# Timeout - property
2008
@dbus_service_property(_interface,
2009
signature="t",
2010
access="readwrite")
1031
@dbus_service_property(_interface, signature=u"t",
1032
access=u"readwrite")
2011
1033
def Timeout_dbus_property(self, value=None):
2012
1034
if value is None: # get
2013
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2014
old_timeout = self.timeout
1035
return dbus.UInt64(self.timeout_milliseconds())
2015
1036
self.timeout = datetime.timedelta(0, 0, 0, value)
2016
# Reschedule disabling
2017
if self.enabled:
2018
now = datetime.datetime.utcnow()
2019
self.expires += self.timeout - old_timeout
2020
if self.expires <= now:
2021
# The timeout has passed
2022
self.disable()
2023
else:
2024
if (getattr(self, "disable_initiator_tag", None)
2025
is None):
2026
return
2027
GObject.source_remove(self.disable_initiator_tag)
2028
self.disable_initiator_tag = GObject.timeout_add(
2029
int((self.expires - now).total_seconds() * 1000),
2030
self.disable)
2031
2032
# ExtendedTimeout - property
2033
@dbus_service_property(_interface,
2034
signature="t",
2035
access="readwrite")
2036
def ExtendedTimeout_dbus_property(self, value=None):
2037
if value is None: # get
2038
return dbus.UInt64(self.extended_timeout.total_seconds()
2039
* 1000)
2040
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1037
# Emit D-Bus signal
1038
self.PropertyChanged(dbus.String(u"Timeout"),
1039
dbus.UInt64(value, variant_level=1))
1040
if getattr(self, u"disable_initiator_tag", None) is None:
1041
return
1042
# Reschedule timeout
1043
gobject.source_remove(self.disable_initiator_tag)
1044
self.disable_initiator_tag = None
1045
time_to_die = (self.
1046
_timedelta_to_milliseconds((self
1047
.last_checked_ok
1048
+ self.timeout)
1049
- datetime.datetime
1050
.utcnow()))
1051
if time_to_die <= 0:
1052
# The timeout has passed
1053
self.disable()
1054
else:
1055
self.disable_initiator_tag = (gobject.timeout_add
1056
(time_to_die, self.disable))
2041
1057
2042
1058
# Interval - property
2043
@dbus_service_property(_interface,
2044
signature="t",
2045
access="readwrite")
1059
@dbus_service_property(_interface, signature=u"t",
1060
access=u"readwrite")
2046
1061
def Interval_dbus_property(self, value=None):
2047
1062
if value is None: # get
2048
return dbus.UInt64(self.interval.total_seconds() * 1000)
1063
return dbus.UInt64(self.interval_milliseconds())
2049
1064
self.interval = datetime.timedelta(0, 0, 0, value)
2050
if getattr(self, "checker_initiator_tag", None) is None:
1065
# Emit D-Bus signal
1066
self.PropertyChanged(dbus.String(u"Interval"),
1067
dbus.UInt64(value, variant_level=1))
1068
if getattr(self, u"checker_initiator_tag", None) is None:
2051
1069
return
2052
if self.enabled:
2053
# Reschedule checker run
2054
GObject.source_remove(self.checker_initiator_tag)
2055
self.checker_initiator_tag = GObject.timeout_add(
2056
value, self.start_checker)
2057
self.start_checker() # Start one now, too
2058
1070
# Reschedule checker run
1071
gobject.source_remove(self.checker_initiator_tag)
1072
self.checker_initiator_tag = (gobject.timeout_add
1073
(value, self.start_checker))
1074
self.start_checker() # Start one now, too
1075
2059
1076
# Checker - property
2060
@dbus_service_property(_interface,
2061
signature="s",
2062
access="readwrite")
1077
@dbus_service_property(_interface, signature=u"s",
1078
access=u"readwrite")
2063
1079
def Checker_dbus_property(self, value=None):
2064
1080
if value is None: # get
2065
1081
return dbus.String(self.checker_command)
2066
self.checker_command = str(value)
1082
self.checker_command = value
1083
# Emit D-Bus signal
1084
self.PropertyChanged(dbus.String(u"Checker"),
1085
dbus.String(self.checker_command,
1086
variant_level=1))
2067
1087
2068
1088
# CheckerRunning - property
2069
@dbus_service_property(_interface,
2070
signature="b",
2071
access="readwrite")
1089
@dbus_service_property(_interface, signature=u"b",
1090
access=u"readwrite")
2072
1091
def CheckerRunning_dbus_property(self, value=None):
2073
1092
if value is None: # get
2074
1093
return dbus.Boolean(self.checker is not None)
2078
1097
self.stop_checker()
2079
1098
2080
1099
# ObjectPath - property
2081
@dbus_annotations(
2082
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2083
"org.freedesktop.DBus.Deprecated": "true"})
2084
@dbus_service_property(_interface, signature="o", access="read")
1100
@dbus_service_property(_interface, signature=u"o", access=u"read")
2085
1101
def ObjectPath_dbus_property(self):
2086
1102
return self.dbus_object_path # is already a dbus.ObjectPath
2087
1103
2088
1104
# Secret = property
2089
@dbus_annotations(
2090
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2091
"invalidates"})
2092
@dbus_service_property(_interface,
2093
signature="ay",
2094
access="write",
2095
byte_arrays=True)
1105
@dbus_service_property(_interface, signature=u"ay",
1106
access=u"write", byte_arrays=True)
2096
1107
def Secret_dbus_property(self, value):
2097
self.secret = bytes(value)
1108
self.secret = str(value)
2098
1109
2099
1110
del _interface
2100
1111
2104
1115
self._pipe = child_pipe
2105
1116
self._pipe.send(('init', fpr, address))
2106
1117
if not self._pipe.recv():
2107
raise KeyError(fpr)
2108
1118
raise KeyError()
1119
2109
1120
def __getattribute__(self, name):
2110
if name == '_pipe':
1121
if(name == '_pipe'):
2111
1122
return super(ProxyClient, self).__getattribute__(name)
2112
1123
self._pipe.send(('getattr', name))
2113
1124
data = self._pipe.recv()
2114
1125
if data[0] == 'data':
2115
1126
return data[1]
2116
1127
if data[0] == 'function':
2117
2118
1128
def func(*args, **kwargs):
2119
1129
self._pipe.send(('funcall', name, args, kwargs))
2120
1130
return self._pipe.recv()[1]
2121
2122
1131
return func
2123
1132
2124
1133
def __setattr__(self, name, value):
2125
if name == '_pipe':
1134
if(name == '_pipe'):
2126
1135
return super(ProxyClient, self).__setattr__(name, value)
2127
1136
self._pipe.send(('setattr', name, value))
2128
1137
2135
1144
2136
1145
def handle(self):
2137
1146
with contextlib.closing(self.server.child_pipe) as child_pipe:
2138
logger.info("TCP connection from: %s",
2139
str(self.client_address))
2140
logger.debug("Pipe FD: %d",
1147
logger.info(u"TCP connection from: %s",
1148
unicode(self.client_address))
1149
logger.debug(u"Pipe FD: %d",
2141
1150
self.server.child_pipe.fileno())
2142
2143
session = gnutls.ClientSession(self.request)
2144
2145
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
2146
# "+AES-256-CBC", "+SHA1",
2147
# "+COMP-NULL", "+CTYPE-OPENPGP",
2148
# "+DHE-DSS"))
1151
1152
session = (gnutls.connection
1153
.ClientSession(self.request,
1154
gnutls.connection
1155
.X509Credentials()))
1156
1157
# Note: gnutls.connection.X509Credentials is really a
1158
# generic GnuTLS certificate credentials object so long as
1159
# no X.509 keys are added to it. Therefore, we can use it
1160
# here despite using OpenPGP certificates.
1161
1162
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1163
# u"+AES-256-CBC", u"+SHA1",
1164
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1165
# u"+DHE-DSS"))
2149
1166
# Use a fallback default, since this MUST be set.
2150
1167
priority = self.server.gnutls_priority
2151
1168
if priority is None:
2152
priority = "NORMAL"
2153
gnutls.priority_set_direct(session._c_object, priority,
2154
None)
2155
1169
priority = u"NORMAL"
1170
(gnutls.library.functions
1171
.gnutls_priority_set_direct(session._c_object,
1172
priority, None))
1173
2156
1174
# Start communication using the Mandos protocol
2157
1175
# Get protocol number
2158
1176
line = self.request.makefile().readline()
2159
logger.debug("Protocol version: %r", line)
1177
logger.debug(u"Protocol version: %r", line)
2160
1178
try:
2161
1179
if int(line.strip().split()[0]) > 1:
2162
raise RuntimeError(line)
2163
except (ValueError, IndexError, RuntimeError) as error:
2164
logger.error("Unknown protocol version: %s", error)
1180
raise RuntimeError
1181
except (ValueError, IndexError, RuntimeError), error:
1182
logger.error(u"Unknown protocol version: %s", error)
2165
1183
return
2166
1184
2167
1185
# Start GnuTLS connection
2168
1186
try:
2169
1187
session.handshake()
2170
except gnutls.Error as error:
2171
logger.warning("Handshake failed: %s", error)
1188
except gnutls.errors.GNUTLSError, error:
1189
logger.warning(u"Handshake failed: %s", error)
2172
1190
# Do not run session.bye() here: the session is not
2173
1191
# established. Just abandon the request.
2174
1192
return
2175
logger.debug("Handshake succeeded")
2176
1193
logger.debug(u"Handshake succeeded")
1194
2177
1195
approval_required = False
2178
1196
try:
2179
1197
try:
2180
fpr = self.fingerprint(
2181
self.peer_certificate(session))
2182
except (TypeError, gnutls.Error) as error:
2183
logger.warning("Bad certificate: %s", error)
1198
fpr = self.fingerprint(self.peer_certificate
1199
(session))
1200
except (TypeError, gnutls.errors.GNUTLSError), error:
1201
logger.warning(u"Bad certificate: %s", error)
2184
1202
return
2185
logger.debug("Fingerprint: %s", fpr)
2186
1203
logger.debug(u"Fingerprint: %s", fpr)
1204
2187
1205
try:
2188
1206
client = ProxyClient(child_pipe, fpr,
2189
1207
self.client_address)
2197
1215
2198
1216
while True:
2199
1217
if not client.enabled:
2200
logger.info("Client %s is disabled",
2201
client.name)
1218
logger.warning(u"Client %s is disabled",
1219
client.name)
2202
1220
if self.server.use_dbus:
2203
1221
# Emit D-Bus signal
2204
client.Rejected("Disabled")
1222
client.Rejected("Disabled")
2205
1223
return
2206
1224
2207
if client.approved or not client.approval_delay:
1225
if client._approved or not client.approval_delay:
2208
1226
#We are approved or approval is disabled
2209
1227
break
2210
elif client.approved is None:
2211
logger.info("Client %s needs approval",
1228
elif client._approved is None:
1229
logger.info(u"Client %s needs approval",
2212
1230
client.name)
2213
1231
if self.server.use_dbus:
2214
1232
# Emit D-Bus signal
2215
1233
client.NeedApproval(
2216
client.approval_delay.total_seconds()
2217
* 1000, client.approved_by_default)
1234
client.approval_delay_milliseconds(),
1235
client.approved_by_default)
2218
1236
else:
2219
logger.warning("Client %s was not approved",
1237
logger.warning(u"Client %s was not approved",
2220
1238
client.name)
2221
1239
if self.server.use_dbus:
2222
1240
# Emit D-Bus signal
2224
1242
return
2225
1243
2226
1244
#wait until timeout or approved
1245
#x = float(client._timedelta_to_milliseconds(delay))
2227
1246
time = datetime.datetime.now()
2228
1247
client.changedstate.acquire()
2229
client.changedstate.wait(delay.total_seconds())
1248
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
2230
1249
client.changedstate.release()
2231
1250
time2 = datetime.datetime.now()
2232
1251
if (time2 - time) >= delay:
2243
1262
else:
2244
1263
delay -= time2 - time
2245
1264
2246
try:
2247
session.send(client.secret)
2248
except gnutls.Error as error:
2249
logger.warning("gnutls send failed",
2250
exc_info = error)
2251
return
2252
2253
logger.info("Sending secret to %s", client.name)
2254
# bump the timeout using extended_timeout
2255
client.bump_timeout(client.extended_timeout)
1265
sent_size = 0
1266
while sent_size < len(client.secret):
1267
try:
1268
sent = session.send(client.secret[sent_size:])
1269
except (gnutls.errors.GNUTLSError), error:
1270
logger.warning("gnutls send failed")
1271
return
1272
logger.debug(u"Sent: %d, remaining: %d",
1273
sent, len(client.secret)
1274
- (sent_size + sent))
1275
sent_size += sent
1276
1277
logger.info(u"Sending secret to %s", client.name)
1278
# bump the timeout as if seen
1279
client.checked_ok()
2256
1280
if self.server.use_dbus:
2257
1281
# Emit D-Bus signal
2258
1282
client.GotSecret()
2262
1286
client.approvals_pending -= 1
2263
1287
try:
2264
1288
session.bye()
2265
except gnutls.Error as error:
2266
logger.warning("GnuTLS bye failed",
2267
exc_info=error)
1289
except (gnutls.errors.GNUTLSError), error:
1290
logger.warning("GnuTLS bye failed")
2268
1291
2269
1292
@staticmethod
2270
1293
def peer_certificate(session):
2271
1294
"Return the peer's OpenPGP certificate as a bytestring"
2272
1295
# If not an OpenPGP certificate...
2273
if (gnutls.certificate_type_get(session._c_object)
2274
!= gnutls.CRT_OPENPGP):
2275
# ...return invalid data
2276
return b""
1296
if (gnutls.library.functions
1297
.gnutls_certificate_type_get(session._c_object)
1298
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1299
# ...do the normal thing
1300
return session.peer_certificate
2277
1301
list_size = ctypes.c_uint(1)
2278
cert_list = (gnutls.certificate_get_peers
1302
cert_list = (gnutls.library.functions
1303
.gnutls_certificate_get_peers
2279
1304
(session._c_object, ctypes.byref(list_size)))
2280
1305
if not bool(cert_list) and list_size.value != 0:
2281
raise gnutls.Error("error getting peer certificate")
1306
raise gnutls.errors.GNUTLSError(u"error getting peer"
1307
u" certificate")
2282
1308
if list_size.value == 0:
2283
1309
return None
2284
1310
cert = cert_list[0]
2288
1314
def fingerprint(openpgp):
2289
1315
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2290
1316
# New GnuTLS "datum" with the OpenPGP public key
2291
datum = gnutls.datum_t(
2292
ctypes.cast(ctypes.c_char_p(openpgp),
2293
ctypes.POINTER(ctypes.c_ubyte)),
2294
ctypes.c_uint(len(openpgp)))
1317
datum = (gnutls.library.types
1318
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1319
ctypes.POINTER
1320
(ctypes.c_ubyte)),
1321
ctypes.c_uint(len(openpgp))))
2295
1322
# New empty GnuTLS certificate
2296
crt = gnutls.openpgp_crt_t()
2297
gnutls.openpgp_crt_init(ctypes.byref(crt))
1323
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1324
(gnutls.library.functions
1325
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2298
1326
# Import the OpenPGP public key into the certificate
2299
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2300
gnutls.OPENPGP_FMT_RAW)
1327
(gnutls.library.functions
1328
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1329
gnutls.library.constants
1330
.GNUTLS_OPENPGP_FMT_RAW))
2301
1331
# Verify the self signature in the key
2302
1332
crtverify = ctypes.c_uint()
2303
gnutls.openpgp_crt_verify_self(crt, 0,
2304
ctypes.byref(crtverify))
1333
(gnutls.library.functions
1334
.gnutls_openpgp_crt_verify_self(crt, 0,
1335
ctypes.byref(crtverify)))
2305
1336
if crtverify.value != 0:
2306
gnutls.openpgp_crt_deinit(crt)
2307
raise gnutls.CertificateSecurityError("Verify failed")
1337
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1338
raise (gnutls.errors.CertificateSecurityError
1339
(u"Verify failed"))
2308
1340
# New buffer for the fingerprint
2309
1341
buf = ctypes.create_string_buffer(20)
2310
1342
buf_len = ctypes.c_size_t()
2311
1343
# Get the fingerprint from the certificate into the buffer
2312
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2313
ctypes.byref(buf_len))
1344
(gnutls.library.functions
1345
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1346
ctypes.byref(buf_len)))
2314
1347
# Deinit the certificate
2315
gnutls.openpgp_crt_deinit(crt)
1348
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2316
1349
# Convert the buffer to a Python bytestring
2317
1350
fpr = ctypes.string_at(buf, buf_len.value)
2318
1351
# Convert the bytestring to hexadecimal notation
2319
hex_fpr = binascii.hexlify(fpr).upper()
1352
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
2320
1353
return hex_fpr
2321
1354
2322
1355
2323
1356
class MultiprocessingMixIn(object):
2324
1357
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2325
2326
1358
def sub_process_main(self, request, address):
2327
1359
try:
2328
1360
self.finish_request(request, address)
2329
except Exception:
1361
except:
2330
1362
self.handle_error(request, address)
2331
1363
self.close_request(request)
2332
1364
2333
1365
def process_request(self, request, address):
2334
1366
"""Start a new process to process the request."""
2335
proc = multiprocessing.Process(target = self.sub_process_main,
2336
args = (request, address))
2337
proc.start()
2338
return proc
2339
1367
multiprocessing.Process(target = self.sub_process_main,
1368
args = (request, address)).start()
2340
1369
2341
1370
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2342
1371
""" adds a pipe to the MixIn """
2343
2344
1372
def process_request(self, request, client_address):
2345
1373
"""Overrides and wraps the original process_request().
2346
1374
2347
1375
This function creates a new pipe in self.pipe
2348
1376
"""
2349
1377
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2350
2351
proc = MultiprocessingMixIn.process_request(self, request,
2352
client_address)
1378
1379
super(MultiprocessingMixInWithPipe,
1380
self).process_request(request, client_address)
2353
1381
self.child_pipe.close()
2354
self.add_pipe(parent_pipe, proc)
2355
2356
def add_pipe(self, parent_pipe, proc):
1382
self.add_pipe(parent_pipe)
1383
1384
def add_pipe(self, parent_pipe):
2357
1385
"""Dummy function; override as necessary"""
2358
raise NotImplementedError()
2359
1386
pass
2360
1387
2361
1388
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2362
1389
socketserver.TCPServer, object):
2367
1394
interface: None or a network interface name (string)
2368
1395
use_ipv6: Boolean; to use IPv6 or not
2369
1396
"""
2370
2371
1397
def __init__(self, server_address, RequestHandlerClass,
2372
interface=None,
2373
use_ipv6=True,
2374
socketfd=None):
2375
"""If socketfd is set, use that file descriptor instead of
2376
creating a new one with socket.socket().
2377
"""
1398
interface=None, use_ipv6=True):
2378
1399
self.interface = interface
2379
1400
if use_ipv6:
2380
1401
self.address_family = socket.AF_INET6
2381
if socketfd is not None:
2382
# Save the file descriptor
2383
self.socketfd = socketfd
2384
# Save the original socket.socket() function
2385
self.socket_socket = socket.socket
2386
# To implement --socket, we monkey patch socket.socket.
2387
#
2388
# (When socketserver.TCPServer is a new-style class, we
2389
# could make self.socket into a property instead of monkey
2390
# patching socket.socket.)
2391
#
2392
# Create a one-time-only replacement for socket.socket()
2393
@functools.wraps(socket.socket)
2394
def socket_wrapper(*args, **kwargs):
2395
# Restore original function so subsequent calls are
2396
# not affected.
2397
socket.socket = self.socket_socket
2398
del self.socket_socket
2399
# This time only, return a new socket object from the
2400
# saved file descriptor.
2401
return socket.fromfd(self.socketfd, *args, **kwargs)
2402
# Replace socket.socket() function with wrapper
2403
socket.socket = socket_wrapper
2404
# The socketserver.TCPServer.__init__ will call
2405
# socket.socket(), which might be our replacement,
2406
# socket_wrapper(), if socketfd was set.
2407
1402
socketserver.TCPServer.__init__(self, server_address,
2408
1403
RequestHandlerClass)
2409
2410
1404
def server_bind(self):
2411
1405
"""This overrides the normal server_bind() function
2412
1406
to bind to an interface if one was specified, and also NOT to
2413
1407
bind to an address or port if they were not specified."""
2414
1408
if self.interface is not None:
2415
1409
if SO_BINDTODEVICE is None:
2416
logger.error("SO_BINDTODEVICE does not exist;"
2417
" cannot bind to interface %s",
1410
logger.error(u"SO_BINDTODEVICE does not exist;"
1411
u" cannot bind to interface %s",
2418
1412
self.interface)
2419
1413
else:
2420
1414
try:
2421
self.socket.setsockopt(
2422
socket.SOL_SOCKET, SO_BINDTODEVICE,
2423
(self.interface + "\0").encode("utf-8"))
2424
except socket.error as error:
2425
if error.errno == errno.EPERM:
2426
logger.error("No permission to bind to"
2427
" interface %s", self.interface)
2428
elif error.errno == errno.ENOPROTOOPT:
2429
logger.error("SO_BINDTODEVICE not available;"
2430
" cannot bind to interface %s",
2431
self.interface)
2432
elif error.errno == errno.ENODEV:
2433
logger.error("Interface %s does not exist,"
2434
" cannot bind", self.interface)
1415
self.socket.setsockopt(socket.SOL_SOCKET,
1416
SO_BINDTODEVICE,
1417
str(self.interface
1418
+ u'\0'))
1419
except socket.error, error:
1420
if error[0] == errno.EPERM:
1421
logger.error(u"No permission to"
1422
u" bind to interface %s",
1423
self.interface)
1424
elif error[0] == errno.ENOPROTOOPT:
1425
logger.error(u"SO_BINDTODEVICE not available;"
1426
u" cannot bind to interface %s",
1427
self.interface)
2435
1428
else:
2436
1429
raise
2437
1430
# Only bind(2) the socket if we really need to.
2438
1431
if self.server_address[0] or self.server_address[1]:
2439
1432
if not self.server_address[0]:
2440
1433
if self.address_family == socket.AF_INET6:
2441
any_address = "::" # in6addr_any
1434
any_address = u"::" # in6addr_any
2442
1435
else:
2443
any_address = "0.0.0.0" # INADDR_ANY
1436
any_address = socket.INADDR_ANY
2444
1437
self.server_address = (any_address,
2445
1438
self.server_address[1])
2446
1439
elif not self.server_address[1]:
2447
self.server_address = (self.server_address[0], 0)
1440
self.server_address = (self.server_address[0],
1441
0)
2448
1442
# if self.interface:
2449
1443
# self.server_address = (self.server_address[0],
2450
1444
# 0, # port
2462
1456
gnutls_priority GnuTLS priority string
2463
1457
use_dbus: Boolean; to emit D-Bus signals or not
2464
1458
2465
Assumes a GObject.MainLoop event loop.
1459
Assumes a gobject.MainLoop event loop.
2466
1460
"""
2467
2468
1461
def __init__(self, server_address, RequestHandlerClass,
2469
interface=None,
2470
use_ipv6=True,
2471
clients=None,
2472
gnutls_priority=None,
2473
use_dbus=True,
2474
socketfd=None):
1462
interface=None, use_ipv6=True, clients=None,
1463
gnutls_priority=None, use_dbus=True):
2475
1464
self.enabled = False
2476
1465
self.clients = clients
2477
1466
if self.clients is None:
2478
self.clients = {}
1467
self.clients = set()
2479
1468
self.use_dbus = use_dbus
2480
1469
self.gnutls_priority = gnutls_priority
2481
1470
IPv6_TCPServer.__init__(self, server_address,
2482
1471
RequestHandlerClass,
2483
1472
interface = interface,
2484
use_ipv6 = use_ipv6,
2485
socketfd = socketfd)
2486
1473
use_ipv6 = use_ipv6)
2487
1474
def server_activate(self):
2488
1475
if self.enabled:
2489
1476
return socketserver.TCPServer.server_activate(self)
2490
2491
1477
def enable(self):
2492
1478
self.enabled = True
2493
2494
def add_pipe(self, parent_pipe, proc):
1479
def add_pipe(self, parent_pipe):
2495
1480
# Call "handle_ipc" for both data and EOF events
2496
GObject.io_add_watch(
2497
parent_pipe.fileno(),
2498
GObject.IO_IN | GObject.IO_HUP,
2499
functools.partial(self.handle_ipc,
2500
parent_pipe = parent_pipe,
2501
proc = proc))
2502
2503
def handle_ipc(self, source, condition,
2504
parent_pipe=None,
2505
proc = None,
1481
gobject.io_add_watch(parent_pipe.fileno(),
1482
gobject.IO_IN | gobject.IO_HUP,
1483
functools.partial(self.handle_ipc,
1484
parent_pipe = parent_pipe))
1485
1486
def handle_ipc(self, source, condition, parent_pipe=None,
2506
1487
client_object=None):
2507
# error, or the other end of multiprocessing.Pipe has closed
2508
if condition & (GObject.IO_ERR | GObject.IO_HUP):
2509
# Wait for other process to exit
2510
proc.join()
1488
condition_names = {
1489
gobject.IO_IN: u"IN", # There is data to read.
1490
gobject.IO_OUT: u"OUT", # Data can be written (without
1491
# blocking).
1492
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1493
gobject.IO_ERR: u"ERR", # Error condition.
1494
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1495
# broken, usually for pipes and
1496
# sockets).
1497
}
1498
conditions_string = ' | '.join(name
1499
for cond, name in
1500
condition_names.iteritems()
1501
if cond & condition)
1502
# error or the other end of multiprocessing.Pipe has closed
1503
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2511
1504
return False
2512
1505
2513
1506
# Read a request from the child
2518
1511
fpr = request[1]
2519
1512
address = request[2]
2520
1513
2521
for c in self.clients.itervalues():
1514
for c in self.clients:
2522
1515
if c.fingerprint == fpr:
2523
1516
client = c
2524
1517
break
2525
1518
else:
2526
logger.info("Client not found for fingerprint: %s, ad"
2527
"dress: %s", fpr, address)
1519
logger.warning(u"Client not found for fingerprint: %s, ad"
1520
u"dress: %s", fpr, address)
2528
1521
if self.use_dbus:
2529
1522
# Emit D-Bus signal
2530
mandos_dbus_service.ClientNotFound(fpr,
2531
address[0])
1523
mandos_dbus_service.ClientNotFound(fpr, address)
2532
1524
parent_pipe.send(False)
2533
1525
return False
2534
1526
2535
GObject.io_add_watch(
2536
parent_pipe.fileno(),
2537
GObject.IO_IN | GObject.IO_HUP,
2538
functools.partial(self.handle_ipc,
2539
parent_pipe = parent_pipe,
2540
proc = proc,
2541
client_object = client))
1527
gobject.io_add_watch(parent_pipe.fileno(),
1528
gobject.IO_IN | gobject.IO_HUP,
1529
functools.partial(self.handle_ipc,
1530
parent_pipe = parent_pipe,
1531
client_object = client))
2542
1532
parent_pipe.send(True)
2543
# remove the old hook in favor of the new above hook on
2544
# same fileno
1533
# remove the old hook in favor of the new above hook on same fileno
2545
1534
return False
2546
1535
if command == 'funcall':
2547
1536
funcname = request[1]
2548
1537
args = request[2]
2549
1538
kwargs = request[3]
2550
1539
2551
parent_pipe.send(('data', getattr(client_object,
2552
funcname)(*args,
2553
**kwargs)))
2554
1540
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
1541
2555
1542
if command == 'getattr':
2556
1543
attrname = request[1]
2557
if isinstance(client_object.__getattribute__(attrname),
2558
collections.Callable):
2559
parent_pipe.send(('function', ))
1544
if callable(client_object.__getattribute__(attrname)):
1545
parent_pipe.send(('function',))
2560
1546
else:
2561
parent_pipe.send((
2562
'data', client_object.__getattribute__(attrname)))
1547
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
2563
1548
2564
1549
if command == 'setattr':
2565
1550
attrname = request[1]
2566
1551
value = request[2]
2567
1552
setattr(client_object, attrname, value)
2568
1553
2569
1554
return True
2570
1555
2571
1556
2572
def rfc3339_duration_to_delta(duration):
2573
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2574
2575
>>> rfc3339_duration_to_delta("P7D")
2576
datetime.timedelta(7)
2577
>>> rfc3339_duration_to_delta("PT60S")
2578
datetime.timedelta(0, 60)
2579
>>> rfc3339_duration_to_delta("PT60M")
2580
datetime.timedelta(0, 3600)
2581
>>> rfc3339_duration_to_delta("PT24H")
2582
datetime.timedelta(1)
2583
>>> rfc3339_duration_to_delta("P1W")
2584
datetime.timedelta(7)
2585
>>> rfc3339_duration_to_delta("PT5M30S")
2586
datetime.timedelta(0, 330)
2587
>>> rfc3339_duration_to_delta("P1DT3M20S")
2588
datetime.timedelta(1, 200)
2589
"""
2590
2591
# Parsing an RFC 3339 duration with regular expressions is not
2592
# possible - there would have to be multiple places for the same
2593
# values, like seconds. The current code, while more esoteric, is
2594
# cleaner without depending on a parsing library. If Python had a
2595
# built-in library for parsing we would use it, but we'd like to
2596
# avoid excessive use of external libraries.
2597
2598
# New type for defining tokens, syntax, and semantics all-in-one
2599
Token = collections.namedtuple("Token", (
2600
"regexp", # To match token; if "value" is not None, must have
2601
# a "group" containing digits
2602
"value", # datetime.timedelta or None
2603
"followers")) # Tokens valid after this token
2604
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2605
# the "duration" ABNF definition in RFC 3339, Appendix A.
2606
token_end = Token(re.compile(r"$"), None, frozenset())
2607
token_second = Token(re.compile(r"(\d+)S"),
2608
datetime.timedelta(seconds=1),
2609
frozenset((token_end, )))
2610
token_minute = Token(re.compile(r"(\d+)M"),
2611
datetime.timedelta(minutes=1),
2612
frozenset((token_second, token_end)))
2613
token_hour = Token(re.compile(r"(\d+)H"),
2614
datetime.timedelta(hours=1),
2615
frozenset((token_minute, token_end)))
2616
token_time = Token(re.compile(r"T"),
2617
None,
2618
frozenset((token_hour, token_minute,
2619
token_second)))
2620
token_day = Token(re.compile(r"(\d+)D"),
2621
datetime.timedelta(days=1),
2622
frozenset((token_time, token_end)))
2623
token_month = Token(re.compile(r"(\d+)M"),
2624
datetime.timedelta(weeks=4),
2625
frozenset((token_day, token_end)))
2626
token_year = Token(re.compile(r"(\d+)Y"),
2627
datetime.timedelta(weeks=52),
2628
frozenset((token_month, token_end)))
2629
token_week = Token(re.compile(r"(\d+)W"),
2630
datetime.timedelta(weeks=1),
2631
frozenset((token_end, )))
2632
token_duration = Token(re.compile(r"P"), None,
2633
frozenset((token_year, token_month,
2634
token_day, token_time,
2635
token_week)))
2636
# Define starting values
2637
value = datetime.timedelta() # Value so far
2638
found_token = None
2639
followers = frozenset((token_duration, )) # Following valid tokens
2640
s = duration # String left to parse
2641
# Loop until end token is found
2642
while found_token is not token_end:
2643
# Search for any currently valid tokens
2644
for token in followers:
2645
match = token.regexp.match(s)
2646
if match is not None:
2647
# Token found
2648
if token.value is not None:
2649
# Value found, parse digits
2650
factor = int(match.group(1), 10)
2651
# Add to value so far
2652
value += factor * token.value
2653
# Strip token from string
2654
s = token.regexp.sub("", s, 1)
2655
# Go to found token
2656
found_token = token
2657
# Set valid next tokens
2658
followers = found_token.followers
2659
break
2660
else:
2661
# No currently valid tokens were found
2662
raise ValueError("Invalid RFC 3339 duration: {!r}"
2663
.format(duration))
2664
# End token found
2665
return value
2666
2667
2668
1557
def string_to_delta(interval):
2669
1558
"""Parse a string and return a datetime.timedelta
2670
1559
2671
>>> string_to_delta('7d')
1560
>>> string_to_delta(u'7d')
2672
1561
datetime.timedelta(7)
2673
>>> string_to_delta('60s')
1562
>>> string_to_delta(u'60s')
2674
1563
datetime.timedelta(0, 60)
2675
>>> string_to_delta('60m')
1564
>>> string_to_delta(u'60m')
2676
1565
datetime.timedelta(0, 3600)
2677
>>> string_to_delta('24h')
1566
>>> string_to_delta(u'24h')
2678
1567
datetime.timedelta(1)
2679
>>> string_to_delta('1w')
1568
>>> string_to_delta(u'1w')
2680
1569
datetime.timedelta(7)
2681
>>> string_to_delta('5m 30s')
1570
>>> string_to_delta(u'5m 30s')
2682
1571
datetime.timedelta(0, 330)
2683
1572
"""
2684
2685
try:
2686
return rfc3339_duration_to_delta(interval)
2687
except ValueError:
2688
pass
2689
2690
1573
timevalue = datetime.timedelta(0)
2691
1574
for s in interval.split():
2692
1575
try:
2693
suffix = s[-1]
1576
suffix = unicode(s[-1])
2694
1577
value = int(s[:-1])
2695
if suffix == "d":
1578
if suffix == u"d":
2696
1579
delta = datetime.timedelta(value)
2697
elif suffix == "s":
1580
elif suffix == u"s":
2698
1581
delta = datetime.timedelta(0, value)
2699
elif suffix == "m":
1582
elif suffix == u"m":
2700
1583
delta = datetime.timedelta(0, 0, 0, 0, value)
2701
elif suffix == "h":
1584
elif suffix == u"h":
2702
1585
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
2703
elif suffix == "w":
1586
elif suffix == u"w":
2704
1587
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2705
1588
else:
2706
raise ValueError("Unknown suffix {!r}".format(suffix))
2707
except IndexError as e:
2708
raise ValueError(*(e.args))
1589
raise ValueError(u"Unknown suffix %r" % suffix)
1590
except (ValueError, IndexError), e:
1591
raise ValueError(e.message)
2709
1592
timevalue += delta
2710
1593
return timevalue
2711
1594
2712
1595
1596
def if_nametoindex(interface):
1597
"""Call the C function if_nametoindex(), or equivalent
1598
1599
Note: This function cannot accept a unicode string."""
1600
global if_nametoindex
1601
try:
1602
if_nametoindex = (ctypes.cdll.LoadLibrary
1603
(ctypes.util.find_library(u"c"))
1604
.if_nametoindex)
1605
except (OSError, AttributeError):
1606
logger.warning(u"Doing if_nametoindex the hard way")
1607
def if_nametoindex(interface):
1608
"Get an interface index the hard way, i.e. using fcntl()"
1609
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1610
with contextlib.closing(socket.socket()) as s:
1611
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1612
struct.pack(str(u"16s16x"),
1613
interface))
1614
interface_index = struct.unpack(str(u"I"),
1615
ifreq[16:20])[0]
1616
return interface_index
1617
return if_nametoindex(interface)
1618
1619
2713
1620
def daemon(nochdir = False, noclose = False):
2714
1621
"""See daemon(3). Standard BSD Unix function.
2715
1622
2718
1625
sys.exit()
2719
1626
os.setsid()
2720
1627
if not nochdir:
2721
os.chdir("/")
1628
os.chdir(u"/")
2722
1629
if os.fork():
2723
1630
sys.exit()
2724
1631
if not noclose:
2725
1632
# Close all standard open file descriptors
2726
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1633
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2727
1634
if not stat.S_ISCHR(os.fstat(null).st_mode):
2728
1635
raise OSError(errno.ENODEV,
2729
"{} not a character device"
2730
.format(os.devnull))
1636
u"%s not a character device"
1637
% os.path.devnull)
2731
1638
os.dup2(null, sys.stdin.fileno())
2732
1639
os.dup2(null, sys.stdout.fileno())
2733
1640
os.dup2(null, sys.stderr.fileno())
2740
1647
##################################################################
2741
1648
# Parsing of options, both command line and config file
2742
1649
2743
parser = argparse.ArgumentParser()
2744
parser.add_argument("-v", "--version", action="version",
2745
version = "%(prog)s {}".format(version),
2746
help="show version number and exit")
2747
parser.add_argument("-i", "--interface", metavar="IF",
2748
help="Bind to interface IF")
2749
parser.add_argument("-a", "--address",
2750
help="Address to listen for requests on")
2751
parser.add_argument("-p", "--port", type=int,
2752
help="Port number to receive requests on")
2753
parser.add_argument("--check", action="store_true",
2754
help="Run self-test")
2755
parser.add_argument("--debug", action="store_true",
2756
help="Debug mode; run in foreground and log"
2757
" to terminal", default=None)
2758
parser.add_argument("--debuglevel", metavar="LEVEL",
2759
help="Debug level for stdout output")
2760
parser.add_argument("--priority", help="GnuTLS"
2761
" priority string (see GnuTLS documentation)")
2762
parser.add_argument("--servicename",
2763
metavar="NAME", help="Zeroconf service name")
2764
parser.add_argument("--configdir",
2765
default="/etc/mandos", metavar="DIR",
2766
help="Directory to search for configuration"
2767
" files")
2768
parser.add_argument("--no-dbus", action="store_false",
2769
dest="use_dbus", help="Do not provide D-Bus"
2770
" system bus interface", default=None)
2771
parser.add_argument("--no-ipv6", action="store_false",
2772
dest="use_ipv6", help="Do not use IPv6",
2773
default=None)
2774
parser.add_argument("--no-restore", action="store_false",
2775
dest="restore", help="Do not restore stored"
2776
" state", default=None)
2777
parser.add_argument("--socket", type=int,
2778
help="Specify a file descriptor to a network"
2779
" socket to use instead of creating one")
2780
parser.add_argument("--statedir", metavar="DIR",
2781
help="Directory to save/restore state in")
2782
parser.add_argument("--foreground", action="store_true",
2783
help="Run in foreground", default=None)
2784
parser.add_argument("--no-zeroconf", action="store_false",
2785
dest="zeroconf", help="Do not use Zeroconf",
2786
default=None)
2787
2788
options = parser.parse_args()
1650
parser = optparse.OptionParser(version = "%%prog %s" % version)
1651
parser.add_option("-i", u"--interface", type=u"string",
1652
metavar="IF", help=u"Bind to interface IF")
1653
parser.add_option("-a", u"--address", type=u"string",
1654
help=u"Address to listen for requests on")
1655
parser.add_option("-p", u"--port", type=u"int",
1656
help=u"Port number to receive requests on")
1657
parser.add_option("--check", action=u"store_true",
1658
help=u"Run self-test")
1659
parser.add_option("--debug", action=u"store_true",
1660
help=u"Debug mode; run in foreground and log to"
1661
u" terminal")
1662
parser.add_option("--debuglevel", type=u"string", metavar="Level",
1663
help=u"Debug level for stdout output")
1664
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1665
u" priority string (see GnuTLS documentation)")
1666
parser.add_option("--servicename", type=u"string",
1667
metavar=u"NAME", help=u"Zeroconf service name")
1668
parser.add_option("--configdir", type=u"string",
1669
default=u"/etc/mandos", metavar=u"DIR",
1670
help=u"Directory to search for configuration"
1671
u" files")
1672
parser.add_option("--no-dbus", action=u"store_false",
1673
dest=u"use_dbus", help=u"Do not provide D-Bus"
1674
u" system bus interface")
1675
parser.add_option("--no-ipv6", action=u"store_false",
1676
dest=u"use_ipv6", help=u"Do not use IPv6")
1677
options = parser.parse_args()[0]
2789
1678
2790
1679
if options.check:
2791
1680
import doctest
2792
fail_count, test_count = doctest.testmod()
2793
sys.exit(os.EX_OK if fail_count == 0 else 1)
1681
doctest.testmod()
1682
sys.exit()
2794
1683
2795
1684
# Default values for config file for server-global settings
2796
server_defaults = { "interface": "",
2797
"address": "",
2798
"port": "",
2799
"debug": "False",
2800
"priority":
2801
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2802
":+SIGN-DSA-SHA256",
2803
"servicename": "Mandos",
2804
"use_dbus": "True",
2805
"use_ipv6": "True",
2806
"debuglevel": "",
2807
"restore": "True",
2808
"socket": "",
2809
"statedir": "/var/lib/mandos",
2810
"foreground": "False",
2811
"zeroconf": "True",
2812
}
1685
server_defaults = { u"interface": u"",
1686
u"address": u"",
1687
u"port": u"",
1688
u"debug": u"False",
1689
u"priority":
1690
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1691
u"servicename": u"Mandos",
1692
u"use_dbus": u"True",
1693
u"use_ipv6": u"True",
1694
u"debuglevel": u"",
1695
}
2813
1696
2814
1697
# Parse config file for server-global settings
2815
1698
server_config = configparser.SafeConfigParser(server_defaults)
2816
1699
del server_defaults
2817
server_config.read(os.path.join(options.configdir, "mandos.conf"))
1700
server_config.read(os.path.join(options.configdir,
1701
u"mandos.conf"))
2818
1702
# Convert the SafeConfigParser object to a dict
2819
1703
server_settings = server_config.defaults()
2820
1704
# Use the appropriate methods on the non-string config options
2821
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
2822
server_settings[option] = server_config.getboolean("DEFAULT",
1705
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1706
server_settings[option] = server_config.getboolean(u"DEFAULT",
2823
1707
option)
2824
1708
if server_settings["port"]:
2825
server_settings["port"] = server_config.getint("DEFAULT",
2826
"port")
2827
if server_settings["socket"]:
2828
server_settings["socket"] = server_config.getint("DEFAULT",
2829
"socket")
2830
# Later, stdin will, and stdout and stderr might, be dup'ed
2831
# over with an opened os.devnull. But we don't want this to
2832
# happen with a supplied network socket.
2833
if 0 <= server_settings["socket"] <= 2:
2834
server_settings["socket"] = os.dup(server_settings
2835
["socket"])
1709
server_settings["port"] = server_config.getint(u"DEFAULT",
1710
u"port")
2836
1711
del server_config
2837
1712
2838
1713
# Override the settings from the config file with command line
2839
1714
# options, if set.
2840
for option in ("interface", "address", "port", "debug",
2841
"priority", "servicename", "configdir", "use_dbus",
2842
"use_ipv6", "debuglevel", "restore", "statedir",
2843
"socket", "foreground", "zeroconf"):
1715
for option in (u"interface", u"address", u"port", u"debug",
1716
u"priority", u"servicename", u"configdir",
1717
u"use_dbus", u"use_ipv6", u"debuglevel"):
2844
1718
value = getattr(options, option)
2845
1719
if value is not None:
2846
1720
server_settings[option] = value
2847
1721
del options
2848
1722
# Force all strings to be unicode
2849
1723
for option in server_settings.keys():
2850
if isinstance(server_settings[option], bytes):
2851
server_settings[option] = (server_settings[option]
2852
.decode("utf-8"))
2853
# Force all boolean options to be boolean
2854
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2855
"foreground", "zeroconf"):
2856
server_settings[option] = bool(server_settings[option])
2857
# Debug implies foreground
2858
if server_settings["debug"]:
2859
server_settings["foreground"] = True
1724
if type(server_settings[option]) is str:
1725
server_settings[option] = unicode(server_settings[option])
2860
1726
# Now we have our good server settings in "server_settings"
2861
1727
2862
1728
##################################################################
2863
1729
2864
if (not server_settings["zeroconf"]
2865
and not (server_settings["port"]
2866
or server_settings["socket"] != "")):
2867
parser.error("Needs port or socket to work without Zeroconf")
2868
2869
1730
# For convenience
2870
debug = server_settings["debug"]
2871
debuglevel = server_settings["debuglevel"]
2872
use_dbus = server_settings["use_dbus"]
2873
use_ipv6 = server_settings["use_ipv6"]
2874
stored_state_path = os.path.join(server_settings["statedir"],
2875
stored_state_file)
2876
foreground = server_settings["foreground"]
2877
zeroconf = server_settings["zeroconf"]
2878
2879
if debug:
2880
initlogger(debug, logging.DEBUG)
2881
else:
2882
if not debuglevel:
2883
initlogger(debug)
2884
else:
2885
level = getattr(logging, debuglevel.upper())
2886
initlogger(debug, level)
2887
2888
if server_settings["servicename"] != "Mandos":
2889
syslogger.setFormatter(
2890
logging.Formatter('Mandos ({}) [%(process)d]:'
2891
' %(levelname)s: %(message)s'.format(
2892
server_settings["servicename"])))
1731
debug = server_settings[u"debug"]
1732
debuglevel = server_settings[u"debuglevel"]
1733
use_dbus = server_settings[u"use_dbus"]
1734
use_ipv6 = server_settings[u"use_ipv6"]
1735
1736
if server_settings[u"servicename"] != u"Mandos":
1737
syslogger.setFormatter(logging.Formatter
1738
(u'Mandos (%s) [%%(process)d]:'
1739
u' %%(levelname)s: %%(message)s'
1740
% server_settings[u"servicename"]))
2893
1741
2894
1742
# Parse config file with clients
2895
client_config = configparser.SafeConfigParser(Client
2896
.client_defaults)
2897
client_config.read(os.path.join(server_settings["configdir"],
2898
"clients.conf"))
1743
client_defaults = { u"timeout": u"1h",
1744
u"interval": u"5m",
1745
u"checker": u"fping -q -- %%(host)s",
1746
u"host": u"",
1747
u"approval_delay": u"0s",
1748
u"approval_duration": u"1s",
1749
}
1750
client_config = configparser.SafeConfigParser(client_defaults)
1751
client_config.read(os.path.join(server_settings[u"configdir"],
1752
u"clients.conf"))
2899
1753
2900
1754
global mandos_dbus_service
2901
1755
mandos_dbus_service = None
2902
1756
2903
socketfd = None
2904
if server_settings["socket"] != "":
2905
socketfd = server_settings["socket"]
2906
tcp_server = MandosServer(
2907
(server_settings["address"], server_settings["port"]),
2908
ClientHandler,
2909
interface=(server_settings["interface"] or None),
2910
use_ipv6=use_ipv6,
2911
gnutls_priority=server_settings["priority"],
2912
use_dbus=use_dbus,
2913
socketfd=socketfd)
2914
if not foreground:
2915
pidfilename = "/run/mandos.pid"
2916
if not os.path.isdir("/run/."):
2917
pidfilename = "/var/run/mandos.pid"
2918
pidfile = None
1757
tcp_server = MandosServer((server_settings[u"address"],
1758
server_settings[u"port"]),
1759
ClientHandler,
1760
interface=(server_settings[u"interface"]
1761
or None),
1762
use_ipv6=use_ipv6,
1763
gnutls_priority=
1764
server_settings[u"priority"],
1765
use_dbus=use_dbus)
1766
if not debug:
1767
pidfilename = u"/var/run/mandos.pid"
2919
1768
try:
2920
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2921
except IOError as e:
2922
logger.error("Could not open file %r", pidfilename,
2923
exc_info=e)
1769
pidfile = open(pidfilename, u"w")
1770
except IOError:
1771
logger.error(u"Could not open file %r", pidfilename)
2924
1772
2925
for name, group in (("_mandos", "_mandos"),
2926
("mandos", "mandos"),
2927
("nobody", "nogroup")):
1773
try:
1774
uid = pwd.getpwnam(u"_mandos").pw_uid
1775
gid = pwd.getpwnam(u"_mandos").pw_gid
1776
except KeyError:
2928
1777
try:
2929
uid = pwd.getpwnam(name).pw_uid
2930
gid = pwd.getpwnam(group).pw_gid
2931
break
1778
uid = pwd.getpwnam(u"mandos").pw_uid
1779
gid = pwd.getpwnam(u"mandos").pw_gid
2932
1780
except KeyError:
2933
continue
2934
else:
2935
uid = 65534
2936
gid = 65534
1781
try:
1782
uid = pwd.getpwnam(u"nobody").pw_uid
1783
gid = pwd.getpwnam(u"nobody").pw_gid
1784
except KeyError:
1785
uid = 65534
1786
gid = 65534
2937
1787
try:
2938
1788
os.setgid(gid)
2939
1789
os.setuid(uid)
2940
except OSError as error:
2941
if error.errno != errno.EPERM:
2942
raise
1790
except OSError, error:
1791
if error[0] != errno.EPERM:
1792
raise error
2943
1793
1794
if not debug and not debuglevel:
1795
syslogger.setLevel(logging.WARNING)
1796
console.setLevel(logging.WARNING)
1797
if debuglevel:
1798
level = getattr(logging, debuglevel.upper())
1799
syslogger.setLevel(level)
1800
console.setLevel(level)
1801
2944
1802
if debug:
2945
1803
# Enable all possible GnuTLS debugging
2946
1804
2947
1805
# "Use a log level over 10 to enable all debugging options."
2948
1806
# - GnuTLS manual
2949
gnutls.global_set_log_level(11)
1807
gnutls.library.functions.gnutls_global_set_log_level(11)
2950
1808
2951
@gnutls.log_func
1809
@gnutls.library.types.gnutls_log_func
2952
1810
def debug_gnutls(level, string):
2953
logger.debug("GnuTLS: %s", string[:-1])
1811
logger.debug(u"GnuTLS: %s", string[:-1])
2954
1812
2955
gnutls.global_set_log_function(debug_gnutls)
1813
(gnutls.library.functions
1814
.gnutls_global_set_log_function(debug_gnutls))
2956
1815
2957
1816
# Redirect stdin so all checkers get /dev/null
2958
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1817
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2959
1818
os.dup2(null, sys.stdin.fileno())
2960
1819
if null > 2:
2961
1820
os.close(null)
2962
2963
# Need to fork before connecting to D-Bus
2964
if not foreground:
2965
# Close all input and output, do double fork, etc.
2966
daemon()
2967
2968
# multiprocessing will use threads, so before we use GObject we
2969
# need to inform GObject that threads will be used.
2970
GObject.threads_init()
1821
else:
1822
# No console logging
1823
logger.removeHandler(console)
1824
2971
1825
2972
1826
global main_loop
2973
1827
# From the Avahi example code
2974
DBusGMainLoop(set_as_default=True)
2975
main_loop = GObject.MainLoop()
1828
DBusGMainLoop(set_as_default=True )
1829
main_loop = gobject.MainLoop()
2976
1830
bus = dbus.SystemBus()
2977
1831
# End of Avahi example code
2978
1832
if use_dbus:
2979
1833
try:
2980
bus_name = dbus.service.BusName("se.recompile.Mandos",
2981
bus,
2982
do_not_queue=True)
2983
old_bus_name = dbus.service.BusName(
2984
"se.bsnet.fukt.Mandos", bus,
2985
do_not_queue=True)
2986
except dbus.exceptions.DBusException as e:
2987
logger.error("Disabling D-Bus:", exc_info=e)
1834
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
1835
bus, do_not_queue=True)
1836
except dbus.exceptions.NameExistsException, e:
1837
logger.error(unicode(e) + u", disabling D-Bus")
2988
1838
use_dbus = False
2989
server_settings["use_dbus"] = False
1839
server_settings[u"use_dbus"] = False
2990
1840
tcp_server.use_dbus = False
2991
if zeroconf:
2992
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2993
service = AvahiServiceToSyslog(
2994
name = server_settings["servicename"],
2995
servicetype = "_mandos._tcp",
2996
protocol = protocol,
2997
bus = bus)
2998
if server_settings["interface"]:
2999
service.interface = if_nametoindex(
3000
server_settings["interface"].encode("utf-8"))
3001
1841
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1842
service = AvahiService(name = server_settings[u"servicename"],
1843
servicetype = u"_mandos._tcp",
1844
protocol = protocol, bus = bus)
1845
if server_settings["interface"]:
1846
service.interface = (if_nametoindex
1847
(str(server_settings[u"interface"])))
1848
1849
if not debug:
1850
# Close all input and output, do double fork, etc.
1851
daemon()
1852
3002
1853
global multiprocessing_manager
3003
1854
multiprocessing_manager = multiprocessing.Manager()
3004
1855
3005
1856
client_class = Client
3006
1857
if use_dbus:
3007
1858
client_class = functools.partial(ClientDBus, bus = bus)
3008
3009
client_settings = Client.config_parser(client_config)
3010
old_client_settings = {}
3011
clients_data = {}
3012
3013
# This is used to redirect stdout and stderr for checker processes
3014
global wnull
3015
wnull = open(os.devnull, "w") # A writable /dev/null
3016
# Only used if server is running in foreground but not in debug
3017
# mode
3018
if debug or not foreground:
3019
wnull.close()
3020
3021
# Get client data and settings from last running state.
3022
if server_settings["restore"]:
3023
try:
3024
with open(stored_state_path, "rb") as stored_state:
3025
clients_data, old_client_settings = pickle.load(
3026
stored_state)
3027
os.remove(stored_state_path)
3028
except IOError as e:
3029
if e.errno == errno.ENOENT:
3030
logger.warning("Could not load persistent state:"
3031
" {}".format(os.strerror(e.errno)))
3032
else:
3033
logger.critical("Could not load persistent state:",
3034
exc_info=e)
3035
raise
3036
except EOFError as e:
3037
logger.warning("Could not load persistent state: "
3038
"EOFError:",
3039
exc_info=e)
3040
3041
with PGPEngine() as pgp:
3042
for client_name, client in clients_data.items():
3043
# Skip removed clients
3044
if client_name not in client_settings:
3045
continue
3046
3047
# Decide which value to use after restoring saved state.
3048
# We have three different values: Old config file,
3049
# new config file, and saved state.
3050
# New config value takes precedence if it differs from old
3051
# config value, otherwise use saved state.
3052
for name, value in client_settings[client_name].items():
3053
try:
3054
# For each value in new config, check if it
3055
# differs from the old config value (Except for
3056
# the "secret" attribute)
3057
if (name != "secret"
3058
and (value !=
3059
old_client_settings[client_name][name])):
3060
client[name] = value
3061
except KeyError:
3062
pass
3063
3064
# Clients who has passed its expire date can still be
3065
# enabled if its last checker was successful. A Client
3066
# whose checker succeeded before we stored its state is
3067
# assumed to have successfully run all checkers during
3068
# downtime.
3069
if client["enabled"]:
3070
if datetime.datetime.utcnow() >= client["expires"]:
3071
if not client["last_checked_ok"]:
3072
logger.warning(
3073
"disabling client {} - Client never "
3074
"performed a successful checker".format(
3075
client_name))
3076
client["enabled"] = False
3077
elif client["last_checker_status"] != 0:
3078
logger.warning(
3079
"disabling client {} - Client last"
3080
" checker failed with error code"
3081
" {}".format(
3082
client_name,
3083
client["last_checker_status"]))
3084
client["enabled"] = False
3085
else:
3086
client["expires"] = (
3087
datetime.datetime.utcnow()
3088
+ client["timeout"])
3089
logger.debug("Last checker succeeded,"
3090
" keeping {} enabled".format(
3091
client_name))
1859
def client_config_items(config, section):
1860
special_settings = {
1861
"approved_by_default":
1862
lambda: config.getboolean(section,
1863
"approved_by_default"),
1864
}
1865
for name, value in config.items(section):
3092
1866
try:
3093
client["secret"] = pgp.decrypt(
3094
client["encrypted_secret"],
3095
client_settings[client_name]["secret"])
3096
except PGPError:
3097
# If decryption fails, we use secret from new settings
3098
logger.debug("Failed to decrypt {} old secret".format(
3099
client_name))
3100
client["secret"] = (client_settings[client_name]
3101
["secret"])
3102
3103
# Add/remove clients based on new changes made to config
3104
for client_name in (set(old_client_settings)
3105
- set(client_settings)):
3106
del clients_data[client_name]
3107
for client_name in (set(client_settings)
3108
- set(old_client_settings)):
3109
clients_data[client_name] = client_settings[client_name]
3110
3111
# Create all client objects
3112
for client_name, client in clients_data.items():
3113
tcp_server.clients[client_name] = client_class(
3114
name = client_name,
3115
settings = client,
3116
server_settings = server_settings)
3117
1867
yield (name, special_settings[name]())
1868
except KeyError:
1869
yield (name, value)
1870
1871
tcp_server.clients.update(set(
1872
client_class(name = section,
1873
config= dict(client_config_items(
1874
client_config, section)))
1875
for section in client_config.sections()))
3118
1876
if not tcp_server.clients:
3119
logger.warning("No clients defined")
3120
3121
if not foreground:
3122
if pidfile is not None:
3123
pid = os.getpid()
3124
try:
3125
with pidfile:
3126
print(pid, file=pidfile)
3127
except IOError:
3128
logger.error("Could not write to file %r with PID %d",
3129
pidfilename, pid)
3130
del pidfile
1877
logger.warning(u"No clients defined")
1878
1879
if not debug:
1880
try:
1881
with pidfile:
1882
pid = os.getpid()
1883
pidfile.write(str(pid) + "\n")
1884
del pidfile
1885
except IOError:
1886
logger.error(u"Could not write to file %r with PID %d",
1887
pidfilename, pid)
1888
except NameError:
1889
# "pidfile" was never created
1890
pass
3131
1891
del pidfilename
3132
1892
1893
signal.signal(signal.SIGINT, signal.SIG_IGN)
1894
3133
1895
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
3134
1896
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
3135
1897
3136
1898
if use_dbus:
3137
3138
@alternate_dbus_interfaces(
3139
{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
3140
class MandosDBusService(DBusObjectWithObjectManager):
1899
class MandosDBusService(dbus.service.Object):
3141
1900
"""A D-Bus proxy object"""
3142
3143
1901
def __init__(self):
3144
dbus.service.Object.__init__(self, bus, "/")
3145
3146
_interface = "se.recompile.Mandos"
3147
3148
@dbus.service.signal(_interface, signature="o")
1902
dbus.service.Object.__init__(self, bus, u"/")
1903
_interface = u"se.bsnet.fukt.Mandos"
1904
1905
@dbus.service.signal(_interface, signature=u"o")
3149
1906
def ClientAdded(self, objpath):
3150
1907
"D-Bus signal"
3151
1908
pass
3152
1909
3153
@dbus.service.signal(_interface, signature="ss")
1910
@dbus.service.signal(_interface, signature=u"ss")
3154
1911
def ClientNotFound(self, fingerprint, address):
3155
1912
"D-Bus signal"
3156
1913
pass
3157
1914
3158
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3159
"true"})
3160
@dbus.service.signal(_interface, signature="os")
1915
@dbus.service.signal(_interface, signature=u"os")
3161
1916
def ClientRemoved(self, objpath, name):
3162
1917
"D-Bus signal"
3163
1918
pass
3164
1919
3165
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3166
"true"})
3167
@dbus.service.method(_interface, out_signature="ao")
1920
@dbus.service.method(_interface, out_signature=u"ao")
3168
1921
def GetAllClients(self):
3169
1922
"D-Bus method"
3170
return dbus.Array(c.dbus_object_path for c in
3171
tcp_server.clients.itervalues())
1923
return dbus.Array(c.dbus_object_path
1924
for c in tcp_server.clients)
3172
1925
3173
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3174
"true"})
3175
1926
@dbus.service.method(_interface,
3176
out_signature="a{oa{sv}}")
1927
out_signature=u"a{oa{sv}}")
3177
1928
def GetAllClientsWithProperties(self):
3178
1929
"D-Bus method"
3179
1930
return dbus.Dictionary(
3180
{ c.dbus_object_path: c.GetAll(
3181
"se.recompile.Mandos.Client")
3182
for c in tcp_server.clients.itervalues() },
3183
signature="oa{sv}")
1931
((c.dbus_object_path, c.GetAll(u""))
1932
for c in tcp_server.clients),
1933
signature=u"oa{sv}")
3184
1934
3185
@dbus.service.method(_interface, in_signature="o")
1935
@dbus.service.method(_interface, in_signature=u"o")
3186
1936
def RemoveClient(self, object_path):
3187
1937
"D-Bus method"
3188
for c in tcp_server.clients.itervalues():
1938
for c in tcp_server.clients:
3189
1939
if c.dbus_object_path == object_path:
3190
del tcp_server.clients[c.name]
1940
tcp_server.clients.remove(c)
3191
1941
c.remove_from_connection()
3192
# Don't signal the disabling
1942
# Don't signal anything except ClientRemoved
3193
1943
c.disable(quiet=True)
3194
# Emit D-Bus signal for removal
3195
self.client_removed_signal(c)
1944
# Emit D-Bus signal
1945
self.ClientRemoved(object_path, c.name)
3196
1946
return
3197
1947
raise KeyError(object_path)
3198
1948
3199
1949
del _interface
3200
3201
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3202
out_signature = "a{oa{sa{sv}}}")
3203
def GetManagedObjects(self):
3204
"""D-Bus method"""
3205
return dbus.Dictionary(
3206
{ client.dbus_object_path:
3207
dbus.Dictionary(
3208
{ interface: client.GetAll(interface)
3209
for interface in
3210
client._get_all_interface_names()})
3211
for client in tcp_server.clients.values()})
3212
3213
def client_added_signal(self, client):
3214
"""Send the new standard signal and the old signal"""
3215
if use_dbus:
3216
# New standard signal
3217
self.InterfacesAdded(
3218
client.dbus_object_path,
3219
dbus.Dictionary(
3220
{ interface: client.GetAll(interface)
3221
for interface in
3222
client._get_all_interface_names()}))
3223
# Old signal
3224
self.ClientAdded(client.dbus_object_path)
3225
3226
def client_removed_signal(self, client):
3227
"""Send the new standard signal and the old signal"""
3228
if use_dbus:
3229
# New standard signal
3230
self.InterfacesRemoved(
3231
client.dbus_object_path,
3232
client._get_all_interface_names())
3233
# Old signal
3234
self.ClientRemoved(client.dbus_object_path,
3235
client.name)
3236
1950
3237
1951
mandos_dbus_service = MandosDBusService()
3238
1952
3239
1953
def cleanup():
3240
1954
"Cleanup function; run on exit"
3241
if zeroconf:
3242
service.cleanup()
3243
3244
multiprocessing.active_children()
3245
wnull.close()
3246
if not (tcp_server.clients or client_settings):
3247
return
3248
3249
# Store client before exiting. Secrets are encrypted with key
3250
# based on what config file has. If config file is
3251
# removed/edited, old secret will thus be unrecovable.
3252
clients = {}
3253
with PGPEngine() as pgp:
3254
for client in tcp_server.clients.itervalues():
3255
key = client_settings[client.name]["secret"]
3256
client.encrypted_secret = pgp.encrypt(client.secret,
3257
key)
3258
client_dict = {}
3259
3260
# A list of attributes that can not be pickled
3261
# + secret.
3262
exclude = { "bus", "changedstate", "secret",
3263
"checker", "server_settings" }
3264
for name, typ in inspect.getmembers(dbus.service
3265
.Object):
3266
exclude.add(name)
3267
3268
client_dict["encrypted_secret"] = (client
3269
.encrypted_secret)
3270
for attr in client.client_structure:
3271
if attr not in exclude:
3272
client_dict[attr] = getattr(client, attr)
3273
3274
clients[client.name] = client_dict
3275
del client_settings[client.name]["secret"]
3276
3277
try:
3278
with tempfile.NamedTemporaryFile(
3279
mode='wb',
3280
suffix=".pickle",
3281
prefix='clients-',
3282
dir=os.path.dirname(stored_state_path),
3283
delete=False) as stored_state:
3284
pickle.dump((clients, client_settings), stored_state)
3285
tempname = stored_state.name
3286
os.rename(tempname, stored_state_path)
3287
except (IOError, OSError) as e:
3288
if not debug:
3289
try:
3290
os.remove(tempname)
3291
except NameError:
3292
pass
3293
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3294
logger.warning("Could not save persistent state: {}"
3295
.format(os.strerror(e.errno)))
3296
else:
3297
logger.warning("Could not save persistent state:",
3298
exc_info=e)
3299
raise
3300
3301
# Delete all clients, and settings from config
1955
service.cleanup()
1956
3302
1957
while tcp_server.clients:
3303
name, client = tcp_server.clients.popitem()
1958
client = tcp_server.clients.pop()
3304
1959
if use_dbus:
3305
1960
client.remove_from_connection()
3306
# Don't signal the disabling
1961
client.disable_hook = None
1962
# Don't signal anything except ClientRemoved
3307
1963
client.disable(quiet=True)
3308
# Emit D-Bus signal for removal
3309
1964
if use_dbus:
3310
mandos_dbus_service.client_removed_signal(client)
3311
client_settings.clear()
1965
# Emit D-Bus signal
1966
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
1967
client.name)
3312
1968
3313
1969
atexit.register(cleanup)
3314
1970
3315
for client in tcp_server.clients.itervalues():
1971
for client in tcp_server.clients:
3316
1972
if use_dbus:
3317
# Emit D-Bus signal for adding
3318
mandos_dbus_service.client_added_signal(client)
3319
# Need to initiate checking of clients
3320
if client.enabled:
3321
client.init_checker()
1973
# Emit D-Bus signal
1974
mandos_dbus_service.ClientAdded(client.dbus_object_path)
1975
client.enable()
3322
1976
3323
1977
tcp_server.enable()
3324
1978
tcp_server.server_activate()
3325
1979
3326
1980
# Find out what port we got
3327
if zeroconf:
3328
service.port = tcp_server.socket.getsockname()[1]
1981
service.port = tcp_server.socket.getsockname()[1]
3329
1982
if use_ipv6:
3330
logger.info("Now listening on address %r, port %d,"
3331
" flowinfo %d, scope_id %d",
3332
*tcp_server.socket.getsockname())
1983
logger.info(u"Now listening on address %r, port %d,"
1984
" flowinfo %d, scope_id %d"
1985
% tcp_server.socket.getsockname())
3333
1986
else: # IPv4
3334
logger.info("Now listening on address %r, port %d",
3335
*tcp_server.socket.getsockname())
1987
logger.info(u"Now listening on address %r, port %d"
1988
% tcp_server.socket.getsockname())
3336
1989
3337
1990
#service.interface = tcp_server.socket.getsockname()[3]
3338
1991
3339
1992
try:
3340
if zeroconf:
3341
# From the Avahi example code
3342
try:
3343
service.activate()
3344
except dbus.exceptions.DBusException as error:
3345
logger.critical("D-Bus Exception", exc_info=error)
3346
cleanup()
3347
sys.exit(1)
3348
# End of Avahi example code
1993
# From the Avahi example code
1994
try:
1995
service.activate()
1996
except dbus.exceptions.DBusException, error:
1997
logger.critical(u"DBusException: %s", error)
1998
cleanup()
1999
sys.exit(1)
2000
# End of Avahi example code
3349
2001
3350
GObject.io_add_watch(tcp_server.fileno(), GObject.IO_IN,
2002
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
3351
2003
lambda *args, **kwargs:
3352
2004
(tcp_server.handle_request
3353
2005
(*args[2:], **kwargs) or True))
3354
2006
3355
logger.debug("Starting main loop")
2007
logger.debug(u"Starting main loop")
3356
2008
main_loop.run()
3357
except AvahiError as error:
3358
logger.critical("Avahi Error", exc_info=error)
2009
except AvahiError, error:
2010
logger.critical(u"AvahiError: %s", error)
3359
2011
cleanup()
3360
2012
sys.exit(1)
3361
2013
except KeyboardInterrupt:
3362
2014
if debug:
3363
print("", file=sys.stderr)
3364
logger.debug("Server received KeyboardInterrupt")
3365
logger.debug("Server exiting")
2015
print >> sys.stderr
2016
logger.debug(u"Server received KeyboardInterrupt")
2017
logger.debug(u"Server exiting")
3366
2018
# Must run before the D-Bus bus name gets deregistered
3367
2019
cleanup()
3368
2020
3369
3370
2021
if __name__ == '__main__':
3371
2022
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0