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- Committer: teddy at bsnet
- Date: 2011-03-15 19:15:24 UTC
- Revision ID: teddy@fukt.bsnet.se-20110315191524-jc3ajgqu2za7dcly
* mandos: Use the new argparse library instead of optparse.
* debian/control (mandos): Depend on python (<=2.7) | python-argparse
* debian/control (mandos): Depend on python (<=2.7) | python-argparse
- files removed:
- debian/mandos-client.examples
- debian/upstream
- network-hooks.d
- plugin-helpers
- files modified:
- .bzrignore
added
removed
mandos
1
#!/usr/bin/python2.7
1
#!/usr/bin/python
2
2
# -*- mode: python; coding: utf-8 -*-
3
3
#
4
4
# Mandos server - give out binary blobs to connecting clients.
11
11
# "AvahiService" class, and some lines in "main".
12
12
#
13
13
# Everything else is
14
# Copyright © 2008-2015 Teddy Hogeborn
15
# Copyright © 2008-2015 Björn Påhlsson
14
# Copyright © 2008-2011 Teddy Hogeborn
15
# Copyright © 2008-2011 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
34
from __future__ import (division, absolute_import, print_function,
35
35
unicode_literals)
36
36
37
from future_builtins import *
38
39
try:
40
import SocketServer as socketserver
41
except ImportError:
42
import socketserver
37
import SocketServer as socketserver
43
38
import socket
44
39
import argparse
45
40
import datetime
46
41
import errno
47
try:
48
import ConfigParser as configparser
49
except ImportError:
50
import configparser
42
import gnutls.crypto
43
import gnutls.connection
44
import gnutls.errors
45
import gnutls.library.functions
46
import gnutls.library.constants
47
import gnutls.library.types
48
import ConfigParser as configparser
51
49
import sys
52
50
import re
53
51
import os
62
60
import struct
63
61
import fcntl
64
62
import functools
65
try:
66
import cPickle as pickle
67
except ImportError:
68
import pickle
63
import cPickle as pickle
69
64
import multiprocessing
70
import types
71
import binascii
72
import tempfile
73
import itertools
74
import collections
75
import codecs
76
65
77
66
import dbus
78
67
import dbus.service
79
try:
80
import gobject
81
except ImportError:
82
from gi.repository import GObject as gobject
68
import gobject
83
69
import avahi
84
70
from dbus.mainloop.glib import DBusGMainLoop
85
71
import ctypes
95
81
except ImportError:
96
82
SO_BINDTODEVICE = None
97
83
98
if sys.version_info.major == 2:
99
str = unicode
100
101
version = "1.7.1"
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.gnupgargs = ['--batch',
155
'--home', self.tempdir,
156
'--force-mdc',
157
'--quiet',
158
'--no-use-agent']
159
160
def __enter__(self):
161
return self
162
163
def __exit__(self, exc_type, exc_value, traceback):
164
self._cleanup()
165
return False
166
167
def __del__(self):
168
self._cleanup()
169
170
def _cleanup(self):
171
if self.tempdir is not None:
172
# Delete contents of tempdir
173
for root, dirs, files in os.walk(self.tempdir,
174
topdown = False):
175
for filename in files:
176
os.remove(os.path.join(root, filename))
177
for dirname in dirs:
178
os.rmdir(os.path.join(root, dirname))
179
# Remove tempdir
180
os.rmdir(self.tempdir)
181
self.tempdir = None
182
183
def password_encode(self, password):
184
# Passphrase can not be empty and can not contain newlines or
185
# NUL bytes. So we prefix it and hex encode it.
186
encoded = b"mandos" + binascii.hexlify(password)
187
if len(encoded) > 2048:
188
# GnuPG can't handle long passwords, so encode differently
189
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
190
.replace(b"\n", b"\\n")
191
.replace(b"\0", b"\\x00"))
192
return encoded
193
194
def encrypt(self, data, password):
195
passphrase = self.password_encode(password)
196
with tempfile.NamedTemporaryFile(
197
dir=self.tempdir) as passfile:
198
passfile.write(passphrase)
199
passfile.flush()
200
proc = subprocess.Popen(['gpg', '--symmetric',
201
'--passphrase-file',
202
passfile.name]
203
+ self.gnupgargs,
204
stdin = subprocess.PIPE,
205
stdout = subprocess.PIPE,
206
stderr = subprocess.PIPE)
207
ciphertext, err = proc.communicate(input = data)
208
if proc.returncode != 0:
209
raise PGPError(err)
210
return ciphertext
211
212
def decrypt(self, data, password):
213
passphrase = self.password_encode(password)
214
with tempfile.NamedTemporaryFile(
215
dir = self.tempdir) as passfile:
216
passfile.write(passphrase)
217
passfile.flush()
218
proc = subprocess.Popen(['gpg', '--decrypt',
219
'--passphrase-file',
220
passfile.name]
221
+ self.gnupgargs,
222
stdin = subprocess.PIPE,
223
stdout = subprocess.PIPE,
224
stderr = subprocess.PIPE)
225
decrypted_plaintext, err = proc.communicate(input = data)
226
if proc.returncode != 0:
227
raise PGPError(err)
228
return decrypted_plaintext
229
84
85
version = "1.3.0"
86
87
#logger = logging.getLogger('mandos')
88
logger = logging.Logger('mandos')
89
syslogger = (logging.handlers.SysLogHandler
90
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
91
address = str("/dev/log")))
92
syslogger.setFormatter(logging.Formatter
93
('Mandos [%(process)d]: %(levelname)s:'
94
' %(message)s'))
95
logger.addHandler(syslogger)
96
97
console = logging.StreamHandler()
98
console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'
99
' %(levelname)s:'
100
' %(message)s'))
101
logger.addHandler(console)
230
102
231
103
class AvahiError(Exception):
232
104
def __init__(self, value, *args, **kwargs):
233
105
self.value = value
234
return super(AvahiError, self).__init__(value, *args,
235
**kwargs)
236
106
super(AvahiError, self).__init__(value, *args, **kwargs)
107
def __unicode__(self):
108
return unicode(repr(self.value))
237
109
238
110
class AvahiServiceError(AvahiError):
239
111
pass
240
112
241
242
113
class AvahiGroupError(AvahiError):
243
114
pass
244
115
251
122
Used to optionally bind to the specified interface.
252
123
name: string; Example: 'Mandos'
253
124
type: string; Example: '_mandos._tcp'.
254
See <https://www.iana.org/assignments/service-names-port-numbers>
125
See <http://www.dns-sd.org/ServiceTypes.html>
255
126
port: integer; what port to announce
256
127
TXT: list of strings; TXT record for the service
257
128
domain: string; Domain to publish on, default to .local if empty.
263
134
server: D-Bus Server
264
135
bus: dbus.SystemBus()
265
136
"""
266
267
def __init__(self,
268
interface = avahi.IF_UNSPEC,
269
name = None,
270
servicetype = None,
271
port = None,
272
TXT = None,
273
domain = "",
274
host = "",
275
max_renames = 32768,
276
protocol = avahi.PROTO_UNSPEC,
277
bus = None):
137
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
138
servicetype = None, port = None, TXT = None,
139
domain = "", host = "", max_renames = 32768,
140
protocol = avahi.PROTO_UNSPEC, bus = None):
278
141
self.interface = interface
279
142
self.name = name
280
143
self.type = servicetype
288
151
self.group = None # our entry group
289
152
self.server = None
290
153
self.bus = bus
291
self.entry_group_state_changed_match = None
292
293
def rename(self, remove=True):
154
def rename(self):
294
155
"""Derived from the Avahi example code"""
295
156
if self.rename_count >= self.max_renames:
296
157
logger.critical("No suitable Zeroconf service name found"
297
158
" after %i retries, exiting.",
298
159
self.rename_count)
299
160
raise AvahiServiceError("Too many renames")
300
self.name = str(
301
self.server.GetAlternativeServiceName(self.name))
302
self.rename_count += 1
161
self.name = unicode(self.server.GetAlternativeServiceName(self.name))
303
162
logger.info("Changing Zeroconf service name to %r ...",
304
163
self.name)
305
if remove:
306
self.remove()
164
syslogger.setFormatter(logging.Formatter
165
('Mandos (%s) [%%(process)d]:'
166
' %%(levelname)s: %%(message)s'
167
% self.name))
168
self.remove()
307
169
try:
308
170
self.add()
309
except dbus.exceptions.DBusException as error:
310
if (error.get_dbus_name()
311
== "org.freedesktop.Avahi.CollisionError"):
312
logger.info("Local Zeroconf service name collision.")
313
return self.rename(remove=False)
314
else:
315
logger.critical("D-Bus Exception", exc_info=error)
316
self.cleanup()
317
os._exit(1)
318
171
except dbus.exceptions.DBusException, error:
172
logger.critical("DBusException: %s", error)
173
self.cleanup()
174
os._exit(1)
175
self.rename_count += 1
319
176
def remove(self):
320
177
"""Derived from the Avahi example code"""
321
if self.entry_group_state_changed_match is not None:
322
self.entry_group_state_changed_match.remove()
323
self.entry_group_state_changed_match = None
324
178
if self.group is not None:
325
179
self.group.Reset()
326
327
180
def add(self):
328
181
"""Derived from the Avahi example code"""
329
self.remove()
330
182
if self.group is None:
331
183
self.group = dbus.Interface(
332
184
self.bus.get_object(avahi.DBUS_NAME,
333
185
self.server.EntryGroupNew()),
334
186
avahi.DBUS_INTERFACE_ENTRY_GROUP)
335
self.entry_group_state_changed_match = (
336
self.group.connect_to_signal(
337
'StateChanged', self.entry_group_state_changed))
187
self.group.connect_to_signal('StateChanged',
188
self
189
.entry_group_state_changed)
338
190
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
339
191
self.name, self.type)
340
192
self.group.AddService(
346
198
dbus.UInt16(self.port),
347
199
avahi.string_array_to_txt_array(self.TXT))
348
200
self.group.Commit()
349
350
201
def entry_group_state_changed(self, state, error):
351
202
"""Derived from the Avahi example code"""
352
203
logger.debug("Avahi entry group state change: %i", state)
358
209
self.rename()
359
210
elif state == avahi.ENTRY_GROUP_FAILURE:
360
211
logger.critical("Avahi: Error in group state changed %s",
361
str(error))
362
raise AvahiGroupError("State changed: {!s}".format(error))
363
212
unicode(error))
213
raise AvahiGroupError("State changed: %s"
214
% unicode(error))
364
215
def cleanup(self):
365
216
"""Derived from the Avahi example code"""
366
217
if self.group is not None:
367
try:
368
self.group.Free()
369
except (dbus.exceptions.UnknownMethodException,
370
dbus.exceptions.DBusException):
371
pass
218
self.group.Free()
372
219
self.group = None
373
self.remove()
374
375
def server_state_changed(self, state, error=None):
220
def server_state_changed(self, state):
376
221
"""Derived from the Avahi example code"""
377
222
logger.debug("Avahi server state change: %i", state)
378
bad_states = {
379
avahi.SERVER_INVALID: "Zeroconf server invalid",
380
avahi.SERVER_REGISTERING: None,
381
avahi.SERVER_COLLISION: "Zeroconf server name collision",
382
avahi.SERVER_FAILURE: "Zeroconf server failure",
383
}
384
if state in bad_states:
385
if bad_states[state] is not None:
386
if error is None:
387
logger.error(bad_states[state])
388
else:
389
logger.error(bad_states[state] + ": %r", error)
390
self.cleanup()
223
if state == avahi.SERVER_COLLISION:
224
logger.error("Zeroconf server name collision")
225
self.remove()
391
226
elif state == avahi.SERVER_RUNNING:
392
try:
393
self.add()
394
except dbus.exceptions.DBusException as error:
395
if (error.get_dbus_name()
396
== "org.freedesktop.Avahi.CollisionError"):
397
logger.info("Local Zeroconf service name"
398
" collision.")
399
return self.rename(remove=False)
400
else:
401
logger.critical("D-Bus Exception", exc_info=error)
402
self.cleanup()
403
os._exit(1)
404
else:
405
if error is None:
406
logger.debug("Unknown state: %r", state)
407
else:
408
logger.debug("Unknown state: %r: %r", state, error)
409
227
self.add()
410
228
def activate(self):
411
229
"""Derived from the Avahi example code"""
412
230
if self.server is None:
413
231
self.server = dbus.Interface(
414
232
self.bus.get_object(avahi.DBUS_NAME,
415
avahi.DBUS_PATH_SERVER,
416
follow_name_owner_changes=True),
233
avahi.DBUS_PATH_SERVER),
417
234
avahi.DBUS_INTERFACE_SERVER)
418
235
self.server.connect_to_signal("StateChanged",
419
self.server_state_changed)
236
self.server_state_changed)
420
237
self.server_state_changed(self.server.GetState())
421
238
422
239
423
class AvahiServiceToSyslog(AvahiService):
424
def rename(self, *args, **kwargs):
425
"""Add the new name to the syslog messages"""
426
ret = AvahiService.rename(self, *args, **kwargs)
427
syslogger.setFormatter(logging.Formatter(
428
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
429
.format(self.name)))
430
return ret
431
432
# Pretend that we have a GnuTLS module
433
class GnuTLS(object):
434
"""This isn't so much a class as it is a module-like namespace.
435
It is instantiated once, and simulates having a GnuTLS module."""
436
437
_library = ctypes.cdll.LoadLibrary(
438
ctypes.util.find_library("gnutls"))
439
_need_version = "3.3.0"
440
def __init__(self):
441
# Need to use class name "GnuTLS" here, since this method is
442
# called before the assignment to the "gnutls" global variable
443
# happens.
444
if GnuTLS.check_version(self._need_version) is None:
445
raise GnuTLS.Error("Needs GnuTLS {} or later"
446
.format(self._need_version))
447
448
# Unless otherwise indicated, the constants and types below are
449
# all from the gnutls/gnutls.h C header file.
450
451
# Constants
452
E_SUCCESS = 0
453
E_INTERRUPTED = -52
454
E_AGAIN = -28
455
CRT_OPENPGP = 2
456
CLIENT = 2
457
SHUT_RDWR = 0
458
CRD_CERTIFICATE = 1
459
E_NO_CERTIFICATE_FOUND = -49
460
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
461
462
# Types
463
class session_int(ctypes.Structure):
464
_fields_ = []
465
session_t = ctypes.POINTER(session_int)
466
class certificate_credentials_st(ctypes.Structure):
467
_fields_ = []
468
certificate_credentials_t = ctypes.POINTER(
469
certificate_credentials_st)
470
certificate_type_t = ctypes.c_int
471
class datum_t(ctypes.Structure):
472
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
473
('size', ctypes.c_uint)]
474
class openpgp_crt_int(ctypes.Structure):
475
_fields_ = []
476
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
477
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
478
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
479
credentials_type_t = ctypes.c_int #
480
transport_ptr_t = ctypes.c_void_p
481
close_request_t = ctypes.c_int
482
483
# Exceptions
484
class Error(Exception):
485
# We need to use the class name "GnuTLS" here, since this
486
# exception might be raised from within GnuTLS.__init__,
487
# which is called before the assignment to the "gnutls"
488
# global variable has happened.
489
def __init__(self, message = None, code = None, args=()):
490
# Default usage is by a message string, but if a return
491
# code is passed, convert it to a string with
492
# gnutls.strerror()
493
self.code = code
494
if message is None and code is not None:
495
message = GnuTLS.strerror(code)
496
return super(GnuTLS.Error, self).__init__(
497
message, *args)
498
499
class CertificateSecurityError(Error):
500
pass
501
502
# Classes
503
class Credentials(object):
504
def __init__(self):
505
self._c_object = gnutls.certificate_credentials_t()
506
gnutls.certificate_allocate_credentials(
507
ctypes.byref(self._c_object))
508
self.type = gnutls.CRD_CERTIFICATE
509
510
def __del__(self):
511
gnutls.certificate_free_credentials(self._c_object)
512
513
class ClientSession(object):
514
def __init__(self, socket, credentials = None):
515
self._c_object = gnutls.session_t()
516
gnutls.init(ctypes.byref(self._c_object), gnutls.CLIENT)
517
gnutls.set_default_priority(self._c_object)
518
gnutls.transport_set_ptr(self._c_object, socket.fileno())
519
gnutls.handshake_set_private_extensions(self._c_object,
520
True)
521
self.socket = socket
522
if credentials is None:
523
credentials = gnutls.Credentials()
524
gnutls.credentials_set(self._c_object, credentials.type,
525
ctypes.cast(credentials._c_object,
526
ctypes.c_void_p))
527
self.credentials = credentials
528
529
def __del__(self):
530
gnutls.deinit(self._c_object)
531
532
def handshake(self):
533
return gnutls.handshake(self._c_object)
534
535
def send(self, data):
536
data = bytes(data)
537
data_len = len(data)
538
while data_len > 0:
539
data_len -= gnutls.record_send(self._c_object,
540
data[-data_len:],
541
data_len)
542
543
def bye(self):
544
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
545
546
# Error handling functions
547
def _error_code(result):
548
"""A function to raise exceptions on errors, suitable
549
for the 'restype' attribute on ctypes functions"""
550
if result >= 0:
551
return result
552
if result == gnutls.E_NO_CERTIFICATE_FOUND:
553
raise gnutls.CertificateSecurityError(code = result)
554
raise gnutls.Error(code = result)
555
556
def _retry_on_error(result, func, arguments):
557
"""A function to retry on some errors, suitable
558
for the 'errcheck' attribute on ctypes functions"""
559
while result < 0:
560
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
561
return _error_code(result)
562
result = func(*arguments)
563
return result
564
565
# Unless otherwise indicated, the function declarations below are
566
# all from the gnutls/gnutls.h C header file.
567
568
# Functions
569
priority_set_direct = _library.gnutls_priority_set_direct
570
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
571
ctypes.POINTER(ctypes.c_char_p)]
572
priority_set_direct.restype = _error_code
573
574
init = _library.gnutls_init
575
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
576
init.restype = _error_code
577
578
set_default_priority = _library.gnutls_set_default_priority
579
set_default_priority.argtypes = [session_t]
580
set_default_priority.restype = _error_code
581
582
record_send = _library.gnutls_record_send
583
record_send.argtypes = [session_t, ctypes.c_void_p,
584
ctypes.c_size_t]
585
record_send.restype = ctypes.c_ssize_t
586
record_send.errcheck = _retry_on_error
587
588
certificate_allocate_credentials = (
589
_library.gnutls_certificate_allocate_credentials)
590
certificate_allocate_credentials.argtypes = [
591
ctypes.POINTER(certificate_credentials_t)]
592
certificate_allocate_credentials.restype = _error_code
593
594
certificate_free_credentials = (
595
_library.gnutls_certificate_free_credentials)
596
certificate_free_credentials.argtypes = [certificate_credentials_t]
597
certificate_free_credentials.restype = None
598
599
handshake_set_private_extensions = (
600
_library.gnutls_handshake_set_private_extensions)
601
handshake_set_private_extensions.argtypes = [session_t,
602
ctypes.c_int]
603
handshake_set_private_extensions.restype = None
604
605
credentials_set = _library.gnutls_credentials_set
606
credentials_set.argtypes = [session_t, credentials_type_t,
607
ctypes.c_void_p]
608
credentials_set.restype = _error_code
609
610
strerror = _library.gnutls_strerror
611
strerror.argtypes = [ctypes.c_int]
612
strerror.restype = ctypes.c_char_p
613
614
certificate_type_get = _library.gnutls_certificate_type_get
615
certificate_type_get.argtypes = [session_t]
616
certificate_type_get.restype = _error_code
617
618
certificate_get_peers = _library.gnutls_certificate_get_peers
619
certificate_get_peers.argtypes = [session_t,
620
ctypes.POINTER(ctypes.c_uint)]
621
certificate_get_peers.restype = ctypes.POINTER(datum_t)
622
623
global_set_log_level = _library.gnutls_global_set_log_level
624
global_set_log_level.argtypes = [ctypes.c_int]
625
global_set_log_level.restype = None
626
627
global_set_log_function = _library.gnutls_global_set_log_function
628
global_set_log_function.argtypes = [log_func]
629
global_set_log_function.restype = None
630
631
deinit = _library.gnutls_deinit
632
deinit.argtypes = [session_t]
633
deinit.restype = None
634
635
handshake = _library.gnutls_handshake
636
handshake.argtypes = [session_t]
637
handshake.restype = _error_code
638
handshake.errcheck = _retry_on_error
639
640
transport_set_ptr = _library.gnutls_transport_set_ptr
641
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
642
transport_set_ptr.restype = None
643
644
bye = _library.gnutls_bye
645
bye.argtypes = [session_t, close_request_t]
646
bye.restype = _error_code
647
bye.errcheck = _retry_on_error
648
649
check_version = _library.gnutls_check_version
650
check_version.argtypes = [ctypes.c_char_p]
651
check_version.restype = ctypes.c_char_p
652
653
# All the function declarations below are from gnutls/openpgp.h
654
655
openpgp_crt_init = _library.gnutls_openpgp_crt_init
656
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
657
openpgp_crt_init.restype = _error_code
658
659
openpgp_crt_import = _library.gnutls_openpgp_crt_import
660
openpgp_crt_import.argtypes = [openpgp_crt_t,
661
ctypes.POINTER(datum_t),
662
openpgp_crt_fmt_t]
663
openpgp_crt_import.restype = _error_code
664
665
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
666
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
667
ctypes.POINTER(ctypes.c_uint)]
668
openpgp_crt_verify_self.restype = _error_code
669
670
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
671
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
672
openpgp_crt_deinit.restype = None
673
674
openpgp_crt_get_fingerprint = (
675
_library.gnutls_openpgp_crt_get_fingerprint)
676
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
677
ctypes.c_void_p,
678
ctypes.POINTER(
679
ctypes.c_size_t)]
680
openpgp_crt_get_fingerprint.restype = _error_code
681
682
# Remove non-public functions
683
del _error_code, _retry_on_error
684
# Create the global "gnutls" object, simulating a module
685
gnutls = GnuTLS()
686
687
def call_pipe(connection, # : multiprocessing.Connection
688
func, *args, **kwargs):
689
"""This function is meant to be called by multiprocessing.Process
690
691
This function runs func(*args, **kwargs), and writes the resulting
692
return value on the provided multiprocessing.Connection.
693
"""
694
connection.send(func(*args, **kwargs))
695
connection.close()
696
697
240
class Client(object):
698
241
"""A representation of a client host served by this server.
699
242
700
243
Attributes:
701
approved: bool(); 'None' if not yet approved/disapproved
244
_approved: bool(); 'None' if not yet approved/disapproved
702
245
approval_delay: datetime.timedelta(); Time to wait for approval
703
246
approval_duration: datetime.timedelta(); Duration of one approval
704
247
checker: subprocess.Popen(); a running checker process used
711
254
instance %(name)s can be used in the command.
712
255
checker_initiator_tag: a gobject event source tag, or None
713
256
created: datetime.datetime(); (UTC) object creation
714
client_structure: Object describing what attributes a client has
715
and is used for storing the client at exit
716
257
current_checker_command: string; current running checker_command
258
disable_hook: If set, called by disable() as disable_hook(self)
717
259
disable_initiator_tag: a gobject event source tag, or None
718
260
enabled: bool()
719
261
fingerprint: string (40 or 32 hexadecimal digits); used to
722
264
interval: datetime.timedelta(); How often to start a new checker
723
265
last_approval_request: datetime.datetime(); (UTC) or None
724
266
last_checked_ok: datetime.datetime(); (UTC) or None
725
last_checker_status: integer between 0 and 255 reflecting exit
726
status of last checker. -1 reflects crashed
727
checker, -2 means no checker completed yet.
728
last_checker_signal: The signal which killed the last checker, if
729
last_checker_status is -1
730
last_enabled: datetime.datetime(); (UTC) or None
267
last_enabled: datetime.datetime(); (UTC)
731
268
name: string; from the config file, used in log messages and
732
269
D-Bus identifiers
733
270
secret: bytestring; sent verbatim (over TLS) to client
734
271
timeout: datetime.timedelta(); How long from last_checked_ok
735
272
until this client is disabled
736
extended_timeout: extra long timeout when secret has been sent
737
273
runtime_expansions: Allowed attributes for runtime expansion.
738
expires: datetime.datetime(); time (UTC) when a client will be
739
disabled, or None
740
server_settings: The server_settings dict from main()
741
274
"""
742
275
743
276
runtime_expansions = ("approval_delay", "approval_duration",
744
"created", "enabled", "expires",
745
"fingerprint", "host", "interval",
746
"last_approval_request", "last_checked_ok",
277
"created", "enabled", "fingerprint",
278
"host", "interval", "last_checked_ok",
747
279
"last_enabled", "name", "timeout")
748
client_defaults = {
749
"timeout": "PT5M",
750
"extended_timeout": "PT15M",
751
"interval": "PT2M",
752
"checker": "fping -q -- %%(host)s",
753
"host": "",
754
"approval_delay": "PT0S",
755
"approval_duration": "PT1S",
756
"approved_by_default": "True",
757
"enabled": "True",
758
}
759
280
760
281
@staticmethod
761
def config_parser(config):
762
"""Construct a new dict of client settings of this form:
763
{ client_name: {setting_name: value, ...}, ...}
764
with exceptions for any special settings as defined above.
765
NOTE: Must be a pure function. Must return the same result
766
value given the same arguments.
767
"""
768
settings = {}
769
for client_name in config.sections():
770
section = dict(config.items(client_name))
771
client = settings[client_name] = {}
772
773
client["host"] = section["host"]
774
# Reformat values from string types to Python types
775
client["approved_by_default"] = config.getboolean(
776
client_name, "approved_by_default")
777
client["enabled"] = config.getboolean(client_name,
778
"enabled")
779
780
# Uppercase and remove spaces from fingerprint for later
781
# comparison purposes with return value from the
782
# fingerprint() function
783
client["fingerprint"] = (section["fingerprint"].upper()
784
.replace(" ", ""))
785
if "secret" in section:
786
client["secret"] = section["secret"].decode("base64")
787
elif "secfile" in section:
788
with open(os.path.expanduser(os.path.expandvars
789
(section["secfile"])),
790
"rb") as secfile:
791
client["secret"] = secfile.read()
792
else:
793
raise TypeError("No secret or secfile for section {}"
794
.format(section))
795
client["timeout"] = string_to_delta(section["timeout"])
796
client["extended_timeout"] = string_to_delta(
797
section["extended_timeout"])
798
client["interval"] = string_to_delta(section["interval"])
799
client["approval_delay"] = string_to_delta(
800
section["approval_delay"])
801
client["approval_duration"] = string_to_delta(
802
section["approval_duration"])
803
client["checker_command"] = section["checker"]
804
client["last_approval_request"] = None
805
client["last_checked_ok"] = None
806
client["last_checker_status"] = -2
807
808
return settings
809
810
def __init__(self, settings, name = None, server_settings=None):
282
def _timedelta_to_milliseconds(td):
283
"Convert a datetime.timedelta() to milliseconds"
284
return ((td.days * 24 * 60 * 60 * 1000)
285
+ (td.seconds * 1000)
286
+ (td.microseconds // 1000))
287
288
def timeout_milliseconds(self):
289
"Return the 'timeout' attribute in milliseconds"
290
return self._timedelta_to_milliseconds(self.timeout)
291
292
def interval_milliseconds(self):
293
"Return the 'interval' attribute in milliseconds"
294
return self._timedelta_to_milliseconds(self.interval)
295
296
def approval_delay_milliseconds(self):
297
return self._timedelta_to_milliseconds(self.approval_delay)
298
299
def __init__(self, name = None, disable_hook=None, config=None):
300
"""Note: the 'checker' key in 'config' sets the
301
'checker_command' attribute and *not* the 'checker'
302
attribute."""
811
303
self.name = name
812
if server_settings is None:
813
server_settings = {}
814
self.server_settings = server_settings
815
# adding all client settings
816
for setting, value in settings.items():
817
setattr(self, setting, value)
818
819
if self.enabled:
820
if not hasattr(self, "last_enabled"):
821
self.last_enabled = datetime.datetime.utcnow()
822
if not hasattr(self, "expires"):
823
self.expires = (datetime.datetime.utcnow()
824
+ self.timeout)
825
else:
826
self.last_enabled = None
827
self.expires = None
828
304
if config is None:
305
config = {}
829
306
logger.debug("Creating client %r", self.name)
307
# Uppercase and remove spaces from fingerprint for later
308
# comparison purposes with return value from the fingerprint()
309
# function
310
self.fingerprint = (config["fingerprint"].upper()
311
.replace(" ", ""))
830
312
logger.debug(" Fingerprint: %s", self.fingerprint)
831
self.created = settings.get("created",
832
datetime.datetime.utcnow())
833
834
# attributes specific for this server instance
313
if "secret" in config:
314
self.secret = config["secret"].decode("base64")
315
elif "secfile" in config:
316
with open(os.path.expanduser(os.path.expandvars
317
(config["secfile"])),
318
"rb") as secfile:
319
self.secret = secfile.read()
320
else:
321
raise TypeError("No secret or secfile for client %s"
322
% self.name)
323
self.host = config.get("host", "")
324
self.created = datetime.datetime.utcnow()
325
self.enabled = False
326
self.last_approval_request = None
327
self.last_enabled = None
328
self.last_checked_ok = None
329
self.timeout = string_to_delta(config["timeout"])
330
self.interval = string_to_delta(config["interval"])
331
self.disable_hook = disable_hook
835
332
self.checker = None
836
333
self.checker_initiator_tag = None
837
334
self.disable_initiator_tag = None
838
335
self.checker_callback_tag = None
336
self.checker_command = config["checker"]
839
337
self.current_checker_command = None
840
self.approved = None
338
self.last_connect = None
339
self._approved = None
340
self.approved_by_default = config.get("approved_by_default",
341
True)
841
342
self.approvals_pending = 0
842
self.changedstate = multiprocessing_manager.Condition(
843
multiprocessing_manager.Lock())
844
self.client_structure = [attr
845
for attr in self.__dict__.iterkeys()
846
if not attr.startswith("_")]
847
self.client_structure.append("client_structure")
848
849
for name, t in inspect.getmembers(
850
type(self), lambda obj: isinstance(obj, property)):
851
if not name.startswith("_"):
852
self.client_structure.append(name)
343
self.approval_delay = string_to_delta(
344
config["approval_delay"])
345
self.approval_duration = string_to_delta(
346
config["approval_duration"])
347
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
853
348
854
# Send notice to process children that client state has changed
855
349
def send_changedstate(self):
856
with self.changedstate:
857
self.changedstate.notify_all()
858
350
self.changedstate.acquire()
351
self.changedstate.notify_all()
352
self.changedstate.release()
353
859
354
def enable(self):
860
355
"""Start this client's checker and timeout hooks"""
861
356
if getattr(self, "enabled", False):
862
357
# Already enabled
863
358
return
864
self.expires = datetime.datetime.utcnow() + self.timeout
865
self.enabled = True
359
self.send_changedstate()
866
360
self.last_enabled = datetime.datetime.utcnow()
867
self.init_checker()
868
self.send_changedstate()
361
# Schedule a new checker to be started an 'interval' from now,
362
# and every interval from then on.
363
self.checker_initiator_tag = (gobject.timeout_add
364
(self.interval_milliseconds(),
365
self.start_checker))
366
# Schedule a disable() when 'timeout' has passed
367
self.disable_initiator_tag = (gobject.timeout_add
368
(self.timeout_milliseconds(),
369
self.disable))
370
self.enabled = True
371
# Also start a new checker *right now*.
372
self.start_checker()
869
373
870
374
def disable(self, quiet=True):
871
375
"""Disable this client."""
872
376
if not getattr(self, "enabled", False):
873
377
return False
874
378
if not quiet:
379
self.send_changedstate()
380
if not quiet:
875
381
logger.info("Disabling client %s", self.name)
876
if getattr(self, "disable_initiator_tag", None) is not None:
382
if getattr(self, "disable_initiator_tag", False):
877
383
gobject.source_remove(self.disable_initiator_tag)
878
384
self.disable_initiator_tag = None
879
self.expires = None
880
if getattr(self, "checker_initiator_tag", None) is not None:
385
if getattr(self, "checker_initiator_tag", False):
881
386
gobject.source_remove(self.checker_initiator_tag)
882
387
self.checker_initiator_tag = None
883
388
self.stop_checker()
389
if self.disable_hook:
390
self.disable_hook(self)
884
391
self.enabled = False
885
if not quiet:
886
self.send_changedstate()
887
392
# Do not run this again if called by a gobject.timeout_add
888
393
return False
889
394
890
395
def __del__(self):
396
self.disable_hook = None
891
397
self.disable()
892
398
893
def init_checker(self):
894
# Schedule a new checker to be started an 'interval' from now,
895
# and every interval from then on.
896
if self.checker_initiator_tag is not None:
897
gobject.source_remove(self.checker_initiator_tag)
898
self.checker_initiator_tag = gobject.timeout_add(
899
int(self.interval.total_seconds() * 1000),
900
self.start_checker)
901
# Schedule a disable() when 'timeout' has passed
902
if self.disable_initiator_tag is not None:
903
gobject.source_remove(self.disable_initiator_tag)
904
self.disable_initiator_tag = gobject.timeout_add(
905
int(self.timeout.total_seconds() * 1000), self.disable)
906
# Also start a new checker *right now*.
907
self.start_checker()
908
909
def checker_callback(self, source, condition, connection,
910
command):
399
def checker_callback(self, pid, condition, command):
911
400
"""The checker has completed, so take appropriate actions."""
912
401
self.checker_callback_tag = None
913
402
self.checker = None
914
# Read return code from connection (see call_pipe)
915
returncode = connection.recv()
916
connection.close()
917
918
if returncode >= 0:
919
self.last_checker_status = returncode
920
self.last_checker_signal = None
921
if self.last_checker_status == 0:
403
if os.WIFEXITED(condition):
404
exitstatus = os.WEXITSTATUS(condition)
405
if exitstatus == 0:
922
406
logger.info("Checker for %(name)s succeeded",
923
407
vars(self))
924
408
self.checked_ok()
925
409
else:
926
logger.info("Checker for %(name)s failed", vars(self))
410
logger.info("Checker for %(name)s failed",
411
vars(self))
927
412
else:
928
self.last_checker_status = -1
929
self.last_checker_signal = -returncode
930
413
logger.warning("Checker for %(name)s crashed?",
931
414
vars(self))
932
return False
933
415
934
416
def checked_ok(self):
935
"""Assert that the client has been seen, alive and well."""
417
"""Bump up the timeout for this client.
418
419
This should only be called when the client has been seen,
420
alive and well.
421
"""
936
422
self.last_checked_ok = datetime.datetime.utcnow()
937
self.last_checker_status = 0
938
self.last_checker_signal = None
939
self.bump_timeout()
940
941
def bump_timeout(self, timeout=None):
942
"""Bump up the timeout for this client."""
943
if timeout is None:
944
timeout = self.timeout
945
if self.disable_initiator_tag is not None:
946
gobject.source_remove(self.disable_initiator_tag)
947
self.disable_initiator_tag = None
948
if getattr(self, "enabled", False):
949
self.disable_initiator_tag = gobject.timeout_add(
950
int(timeout.total_seconds() * 1000), self.disable)
951
self.expires = datetime.datetime.utcnow() + timeout
423
gobject.source_remove(self.disable_initiator_tag)
424
self.disable_initiator_tag = (gobject.timeout_add
425
(self.timeout_milliseconds(),
426
self.disable))
952
427
953
428
def need_approval(self):
954
429
self.last_approval_request = datetime.datetime.utcnow()
959
434
If a checker already exists, leave it running and do
960
435
nothing."""
961
436
# The reason for not killing a running checker is that if we
962
# did that, and if a checker (for some reason) started running
963
# slowly and taking more than 'interval' time, then the client
964
# would inevitably timeout, since no checker would get a
965
# chance to run to completion. If we instead leave running
437
# did that, then if a checker (for some reason) started
438
# running slowly and taking more than 'interval' time, the
439
# client would inevitably timeout, since no checker would get
440
# a chance to run to completion. If we instead leave running
966
441
# checkers alone, the checker would have to take more time
967
442
# than 'timeout' for the client to be disabled, which is as it
968
443
# should be.
969
444
970
if self.checker is not None and not self.checker.is_alive():
971
logger.warning("Checker was not alive; joining")
972
self.checker.join()
973
self.checker = None
445
# If a checker exists, make sure it is not a zombie
446
try:
447
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
448
except (AttributeError, OSError), error:
449
if (isinstance(error, OSError)
450
and error.errno != errno.ECHILD):
451
raise error
452
else:
453
if pid:
454
logger.warning("Checker was a zombie")
455
gobject.source_remove(self.checker_callback_tag)
456
self.checker_callback(pid, status,
457
self.current_checker_command)
974
458
# Start a new checker if needed
975
459
if self.checker is None:
976
# Escape attributes for the shell
977
escaped_attrs = {
978
attr: re.escape(str(getattr(self, attr)))
979
for attr in self.runtime_expansions }
980
460
try:
981
command = self.checker_command % escaped_attrs
982
except TypeError as error:
983
logger.error('Could not format string "%s"',
984
self.checker_command,
985
exc_info=error)
986
return True # Try again later
461
# In case checker_command has exactly one % operator
462
command = self.checker_command % self.host
463
except TypeError:
464
# Escape attributes for the shell
465
escaped_attrs = dict(
466
(attr,
467
re.escape(unicode(str(getattr(self, attr, "")),
468
errors=
469
'replace')))
470
for attr in
471
self.runtime_expansions)
472
473
try:
474
command = self.checker_command % escaped_attrs
475
except TypeError, error:
476
logger.error('Could not format string "%s":'
477
' %s', self.checker_command, error)
478
return True # Try again later
987
479
self.current_checker_command = command
988
logger.info("Starting checker %r for %s", command,
989
self.name)
990
# We don't need to redirect stdout and stderr, since
991
# in normal mode, that is already done by daemon(),
992
# and in debug mode we don't want to. (Stdin is
993
# always replaced by /dev/null.)
994
# The exception is when not debugging but nevertheless
995
# running in the foreground; use the previously
996
# created wnull.
997
popen_args = { "close_fds": True,
998
"shell": True,
999
"cwd": "/" }
1000
if (not self.server_settings["debug"]
1001
and self.server_settings["foreground"]):
1002
popen_args.update({"stdout": wnull,
1003
"stderr": wnull })
1004
pipe = multiprocessing.Pipe(duplex = False)
1005
self.checker = multiprocessing.Process(
1006
target = call_pipe,
1007
args = (pipe[1], subprocess.call, command),
1008
kwargs = popen_args)
1009
self.checker.start()
1010
self.checker_callback_tag = gobject.io_add_watch(
1011
pipe[0].fileno(), gobject.IO_IN,
1012
self.checker_callback, pipe[0], command)
480
try:
481
logger.info("Starting checker %r for %s",
482
command, self.name)
483
# We don't need to redirect stdout and stderr, since
484
# in normal mode, that is already done by daemon(),
485
# and in debug mode we don't want to. (Stdin is
486
# always replaced by /dev/null.)
487
self.checker = subprocess.Popen(command,
488
close_fds=True,
489
shell=True, cwd="/")
490
self.checker_callback_tag = (gobject.child_watch_add
491
(self.checker.pid,
492
self.checker_callback,
493
data=command))
494
# The checker may have completed before the gobject
495
# watch was added. Check for this.
496
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
497
if pid:
498
gobject.source_remove(self.checker_callback_tag)
499
self.checker_callback(pid, status, command)
500
except OSError, error:
501
logger.error("Failed to start subprocess: %s",
502
error)
1013
503
# Re-run this periodically if run by gobject.timeout_add
1014
504
return True
1015
505
1021
511
if getattr(self, "checker", None) is None:
1022
512
return
1023
513
logger.debug("Stopping checker for %(name)s", vars(self))
1024
self.checker.terminate()
514
try:
515
os.kill(self.checker.pid, signal.SIGTERM)
516
#time.sleep(0.5)
517
#if self.checker.poll() is None:
518
# os.kill(self.checker.pid, signal.SIGKILL)
519
except OSError, error:
520
if error.errno != errno.ESRCH: # No such process
521
raise
1025
522
self.checker = None
1026
523
1027
1028
def dbus_service_property(dbus_interface,
1029
signature="v",
1030
access="readwrite",
1031
byte_arrays=False):
524
def dbus_service_property(dbus_interface, signature="v",
525
access="readwrite", byte_arrays=False):
1032
526
"""Decorators for marking methods of a DBusObjectWithProperties to
1033
527
become properties on the D-Bus.
1034
528
1043
537
# "Set" method, so we fail early here:
1044
538
if byte_arrays and signature != "ay":
1045
539
raise ValueError("Byte arrays not supported for non-'ay'"
1046
" signature {!r}".format(signature))
1047
540
" signature %r" % signature)
1048
541
def decorator(func):
1049
542
func._dbus_is_property = True
1050
543
func._dbus_interface = dbus_interface
1055
548
func._dbus_name = func._dbus_name[:-14]
1056
549
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
1057
550
return func
1058
1059
return decorator
1060
1061
1062
def dbus_interface_annotations(dbus_interface):
1063
"""Decorator for marking functions returning interface annotations
1064
1065
Usage:
1066
1067
@dbus_interface_annotations("org.example.Interface")
1068
def _foo(self): # Function name does not matter
1069
return {"org.freedesktop.DBus.Deprecated": "true",
1070
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1071
"false"}
1072
"""
1073
1074
def decorator(func):
1075
func._dbus_is_interface = True
1076
func._dbus_interface = dbus_interface
1077
func._dbus_name = dbus_interface
1078
return func
1079
1080
return decorator
1081
1082
1083
def dbus_annotations(annotations):
1084
"""Decorator to annotate D-Bus methods, signals or properties
1085
Usage:
1086
1087
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1088
"org.freedesktop.DBus.Property."
1089
"EmitsChangedSignal": "false"})
1090
@dbus_service_property("org.example.Interface", signature="b",
1091
access="r")
1092
def Property_dbus_property(self):
1093
return dbus.Boolean(False)
1094
1095
See also the DBusObjectWithAnnotations class.
1096
"""
1097
1098
def decorator(func):
1099
func._dbus_annotations = annotations
1100
return func
1101
1102
551
return decorator
1103
552
1104
553
1105
554
class DBusPropertyException(dbus.exceptions.DBusException):
1106
555
"""A base class for D-Bus property-related exceptions
1107
556
"""
1108
pass
557
def __unicode__(self):
558
return unicode(str(self))
1109
559
1110
560
1111
561
class DBusPropertyAccessException(DBusPropertyException):
1120
570
pass
1121
571
1122
572
1123
class DBusObjectWithAnnotations(dbus.service.Object):
1124
"""A D-Bus object with annotations.
1125
1126
Classes inheriting from this can use the dbus_annotations
1127
decorator to add annotations to methods or signals.
1128
"""
1129
1130
@staticmethod
1131
def _is_dbus_thing(thing):
1132
"""Returns a function testing if an attribute is a D-Bus thing
1133
1134
If called like _is_dbus_thing("method") it returns a function
1135
suitable for use as predicate to inspect.getmembers().
1136
"""
1137
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1138
False)
1139
1140
def _get_all_dbus_things(self, thing):
1141
"""Returns a generator of (name, attribute) pairs
1142
"""
1143
return ((getattr(athing.__get__(self), "_dbus_name", name),
1144
athing.__get__(self))
1145
for cls in self.__class__.__mro__
1146
for name, athing in
1147
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1148
1149
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1150
out_signature = "s",
1151
path_keyword = 'object_path',
1152
connection_keyword = 'connection')
1153
def Introspect(self, object_path, connection):
1154
"""Overloading of standard D-Bus method.
1155
1156
Inserts annotation tags on methods and signals.
1157
"""
1158
xmlstring = dbus.service.Object.Introspect(self, object_path,
1159
connection)
1160
try:
1161
document = xml.dom.minidom.parseString(xmlstring)
1162
1163
for if_tag in document.getElementsByTagName("interface"):
1164
# Add annotation tags
1165
for typ in ("method", "signal"):
1166
for tag in if_tag.getElementsByTagName(typ):
1167
annots = dict()
1168
for name, prop in (self.
1169
_get_all_dbus_things(typ)):
1170
if (name == tag.getAttribute("name")
1171
and prop._dbus_interface
1172
== if_tag.getAttribute("name")):
1173
annots.update(getattr(
1174
prop, "_dbus_annotations", {}))
1175
for name, value in annots.items():
1176
ann_tag = document.createElement(
1177
"annotation")
1178
ann_tag.setAttribute("name", name)
1179
ann_tag.setAttribute("value", value)
1180
tag.appendChild(ann_tag)
1181
# Add interface annotation tags
1182
for annotation, value in dict(
1183
itertools.chain.from_iterable(
1184
annotations().items()
1185
for name, annotations
1186
in self._get_all_dbus_things("interface")
1187
if name == if_tag.getAttribute("name")
1188
)).items():
1189
ann_tag = document.createElement("annotation")
1190
ann_tag.setAttribute("name", annotation)
1191
ann_tag.setAttribute("value", value)
1192
if_tag.appendChild(ann_tag)
1193
# Fix argument name for the Introspect method itself
1194
if (if_tag.getAttribute("name")
1195
== dbus.INTROSPECTABLE_IFACE):
1196
for cn in if_tag.getElementsByTagName("method"):
1197
if cn.getAttribute("name") == "Introspect":
1198
for arg in cn.getElementsByTagName("arg"):
1199
if (arg.getAttribute("direction")
1200
== "out"):
1201
arg.setAttribute("name",
1202
"xml_data")
1203
xmlstring = document.toxml("utf-8")
1204
document.unlink()
1205
except (AttributeError, xml.dom.DOMException,
1206
xml.parsers.expat.ExpatError) as error:
1207
logger.error("Failed to override Introspection method",
1208
exc_info=error)
1209
return xmlstring
1210
1211
1212
class DBusObjectWithProperties(DBusObjectWithAnnotations):
573
class DBusObjectWithProperties(dbus.service.Object):
1213
574
"""A D-Bus object with properties.
1214
575
1215
576
Classes inheriting from this can use the dbus_service_property
1216
577
decorator to expose methods as D-Bus properties. It exposes the
1217
578
standard Get(), Set(), and GetAll() methods on the D-Bus.
1218
579
"""
1219
580
581
@staticmethod
582
def _is_dbus_property(obj):
583
return getattr(obj, "_dbus_is_property", False)
584
585
def _get_all_dbus_properties(self):
586
"""Returns a generator of (name, attribute) pairs
587
"""
588
return ((prop._dbus_name, prop)
589
for name, prop in
590
inspect.getmembers(self, self._is_dbus_property))
591
1220
592
def _get_dbus_property(self, interface_name, property_name):
1221
593
"""Returns a bound method if one exists which is a D-Bus
1222
594
property with the specified name and interface.
1223
595
"""
1224
for cls in self.__class__.__mro__:
1225
for name, value in inspect.getmembers(
1226
cls, self._is_dbus_thing("property")):
1227
if (value._dbus_name == property_name
1228
and value._dbus_interface == interface_name):
1229
return value.__get__(self)
1230
596
for name in (property_name,
597
property_name + "_dbus_property"):
598
prop = getattr(self, name, None)
599
if (prop is None
600
or not self._is_dbus_property(prop)
601
or prop._dbus_name != property_name
602
or (interface_name and prop._dbus_interface
603
and interface_name != prop._dbus_interface)):
604
continue
605
return prop
1231
606
# No such property
1232
raise DBusPropertyNotFound("{}:{}.{}".format(
1233
self.dbus_object_path, interface_name, property_name))
1234
1235
@classmethod
1236
def _get_all_interface_names(cls):
1237
"""Get a sequence of all interfaces supported by an object"""
1238
return (name for name in set(getattr(getattr(x, attr),
1239
"_dbus_interface", None)
1240
for x in (inspect.getmro(cls))
1241
for attr in dir(x))
1242
if name is not None)
1243
1244
@dbus.service.method(dbus.PROPERTIES_IFACE,
1245
in_signature="ss",
607
raise DBusPropertyNotFound(self.dbus_object_path + ":"
608
+ interface_name + "."
609
+ property_name)
610
611
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1246
612
out_signature="v")
1247
613
def Get(self, interface_name, property_name):
1248
614
"""Standard D-Bus property Get() method, see D-Bus standard.
1266
632
# The byte_arrays option is not supported yet on
1267
633
# signatures other than "ay".
1268
634
if prop._dbus_signature != "ay":
1269
raise ValueError("Byte arrays not supported for non-"
1270
"'ay' signature {!r}"
1271
.format(prop._dbus_signature))
1272
value = dbus.ByteArray(b''.join(chr(byte)
1273
for byte in value))
635
raise ValueError
636
value = dbus.ByteArray(''.join(unichr(byte)
637
for byte in value))
1274
638
prop(value)
1275
639
1276
@dbus.service.method(dbus.PROPERTIES_IFACE,
1277
in_signature="s",
640
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1278
641
out_signature="a{sv}")
1279
642
def GetAll(self, interface_name):
1280
643
"""Standard D-Bus property GetAll() method, see D-Bus
1281
644
standard.
1282
645
1283
646
Note: Will not include properties with access="write".
1284
647
"""
1285
properties = {}
1286
for name, prop in self._get_all_dbus_things("property"):
648
all = {}
649
for name, prop in self._get_all_dbus_properties():
1287
650
if (interface_name
1288
651
and interface_name != prop._dbus_interface):
1289
652
# Interface non-empty but did not match
1293
656
continue
1294
657
value = prop()
1295
658
if not hasattr(value, "variant_level"):
1296
properties[name] = value
659
all[name] = value
1297
660
continue
1298
properties[name] = type(value)(
1299
value, variant_level = value.variant_level + 1)
1300
return dbus.Dictionary(properties, signature="sv")
1301
1302
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1303
def PropertiesChanged(self, interface_name, changed_properties,
1304
invalidated_properties):
1305
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1306
standard.
1307
"""
1308
pass
661
all[name] = type(value)(value, variant_level=
662
value.variant_level+1)
663
return dbus.Dictionary(all, signature="sv")
1309
664
1310
665
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1311
666
out_signature="s",
1312
667
path_keyword='object_path',
1313
668
connection_keyword='connection')
1314
669
def Introspect(self, object_path, connection):
1315
"""Overloading of standard D-Bus method.
1316
1317
Inserts property tags and interface annotation tags.
670
"""Standard D-Bus method, overloaded to insert property tags.
1318
671
"""
1319
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1320
object_path,
1321
connection)
672
xmlstring = dbus.service.Object.Introspect(self, object_path,
673
connection)
1322
674
try:
1323
675
document = xml.dom.minidom.parseString(xmlstring)
1324
1325
676
def make_tag(document, name, prop):
1326
677
e = document.createElement("property")
1327
678
e.setAttribute("name", name)
1328
679
e.setAttribute("type", prop._dbus_signature)
1329
680
e.setAttribute("access", prop._dbus_access)
1330
681
return e
1331
1332
682
for if_tag in document.getElementsByTagName("interface"):
1333
# Add property tags
1334
683
for tag in (make_tag(document, name, prop)
1335
684
for name, prop
1336
in self._get_all_dbus_things("property")
685
in self._get_all_dbus_properties()
1337
686
if prop._dbus_interface
1338
687
== if_tag.getAttribute("name")):
1339
688
if_tag.appendChild(tag)
1340
# Add annotation tags for properties
1341
for tag in if_tag.getElementsByTagName("property"):
1342
annots = dict()
1343
for name, prop in self._get_all_dbus_things(
1344
"property"):
1345
if (name == tag.getAttribute("name")
1346
and prop._dbus_interface
1347
== if_tag.getAttribute("name")):
1348
annots.update(getattr(
1349
prop, "_dbus_annotations", {}))
1350
for name, value in annots.items():
1351
ann_tag = document.createElement(
1352
"annotation")
1353
ann_tag.setAttribute("name", name)
1354
ann_tag.setAttribute("value", value)
1355
tag.appendChild(ann_tag)
1356
689
# Add the names to the return values for the
1357
690
# "org.freedesktop.DBus.Properties" methods
1358
691
if (if_tag.getAttribute("name")
1371
704
xmlstring = document.toxml("utf-8")
1372
705
document.unlink()
1373
706
except (AttributeError, xml.dom.DOMException,
1374
xml.parsers.expat.ExpatError) as error:
1375
logger.error("Failed to override Introspection method",
1376
exc_info=error)
1377
return xmlstring
1378
1379
try:
1380
dbus.OBJECT_MANAGER_IFACE
1381
except AttributeError:
1382
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1383
1384
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1385
"""A D-Bus object with an ObjectManager.
1386
1387
Classes inheriting from this exposes the standard
1388
GetManagedObjects call and the InterfacesAdded and
1389
InterfacesRemoved signals on the standard
1390
"org.freedesktop.DBus.ObjectManager" interface.
1391
1392
Note: No signals are sent automatically; they must be sent
1393
manually.
1394
"""
1395
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1396
out_signature = "a{oa{sa{sv}}}")
1397
def GetManagedObjects(self):
1398
"""This function must be overridden"""
1399
raise NotImplementedError()
1400
1401
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1402
signature = "oa{sa{sv}}")
1403
def InterfacesAdded(self, object_path, interfaces_and_properties):
1404
pass
1405
1406
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature = "oas")
1407
def InterfacesRemoved(self, object_path, interfaces):
1408
pass
1409
1410
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1411
out_signature = "s",
1412
path_keyword = 'object_path',
1413
connection_keyword = 'connection')
1414
def Introspect(self, object_path, connection):
1415
"""Overloading of standard D-Bus method.
1416
1417
Override return argument name of GetManagedObjects to be
1418
"objpath_interfaces_and_properties"
1419
"""
1420
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1421
object_path,
1422
connection)
1423
try:
1424
document = xml.dom.minidom.parseString(xmlstring)
1425
1426
for if_tag in document.getElementsByTagName("interface"):
1427
# Fix argument name for the GetManagedObjects method
1428
if (if_tag.getAttribute("name")
1429
== dbus.OBJECT_MANAGER_IFACE):
1430
for cn in if_tag.getElementsByTagName("method"):
1431
if (cn.getAttribute("name")
1432
== "GetManagedObjects"):
1433
for arg in cn.getElementsByTagName("arg"):
1434
if (arg.getAttribute("direction")
1435
== "out"):
1436
arg.setAttribute(
1437
"name",
1438
"objpath_interfaces"
1439
"_and_properties")
1440
xmlstring = document.toxml("utf-8")
1441
document.unlink()
1442
except (AttributeError, xml.dom.DOMException,
1443
xml.parsers.expat.ExpatError) as error:
1444
logger.error("Failed to override Introspection method",
1445
exc_info = error)
1446
return xmlstring
1447
1448
def datetime_to_dbus(dt, variant_level=0):
1449
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1450
if dt is None:
1451
return dbus.String("", variant_level = variant_level)
1452
return dbus.String(dt.isoformat(), variant_level=variant_level)
1453
1454
1455
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1456
"""A class decorator; applied to a subclass of
1457
dbus.service.Object, it will add alternate D-Bus attributes with
1458
interface names according to the "alt_interface_names" mapping.
1459
Usage:
1460
1461
@alternate_dbus_interfaces({"org.example.Interface":
1462
"net.example.AlternateInterface"})
1463
class SampleDBusObject(dbus.service.Object):
1464
@dbus.service.method("org.example.Interface")
1465
def SampleDBusMethod():
1466
pass
1467
1468
The above "SampleDBusMethod" on "SampleDBusObject" will be
1469
reachable via two interfaces: "org.example.Interface" and
1470
"net.example.AlternateInterface", the latter of which will have
1471
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1472
"true", unless "deprecate" is passed with a False value.
1473
1474
This works for methods and signals, and also for D-Bus properties
1475
(from DBusObjectWithProperties) and interfaces (from the
1476
dbus_interface_annotations decorator).
1477
"""
1478
1479
def wrapper(cls):
1480
for orig_interface_name, alt_interface_name in (
1481
alt_interface_names.items()):
1482
attr = {}
1483
interface_names = set()
1484
# Go though all attributes of the class
1485
for attrname, attribute in inspect.getmembers(cls):
1486
# Ignore non-D-Bus attributes, and D-Bus attributes
1487
# with the wrong interface name
1488
if (not hasattr(attribute, "_dbus_interface")
1489
or not attribute._dbus_interface.startswith(
1490
orig_interface_name)):
1491
continue
1492
# Create an alternate D-Bus interface name based on
1493
# the current name
1494
alt_interface = attribute._dbus_interface.replace(
1495
orig_interface_name, alt_interface_name)
1496
interface_names.add(alt_interface)
1497
# Is this a D-Bus signal?
1498
if getattr(attribute, "_dbus_is_signal", False):
1499
if sys.version_info.major == 2:
1500
# Extract the original non-method undecorated
1501
# function by black magic
1502
nonmethod_func = (dict(
1503
zip(attribute.func_code.co_freevars,
1504
attribute.__closure__))
1505
["func"].cell_contents)
1506
else:
1507
nonmethod_func = attribute
1508
# Create a new, but exactly alike, function
1509
# object, and decorate it to be a new D-Bus signal
1510
# with the alternate D-Bus interface name
1511
if sys.version_info.major == 2:
1512
new_function = types.FunctionType(
1513
nonmethod_func.func_code,
1514
nonmethod_func.func_globals,
1515
nonmethod_func.func_name,
1516
nonmethod_func.func_defaults,
1517
nonmethod_func.func_closure)
1518
else:
1519
new_function = types.FunctionType(
1520
nonmethod_func.__code__,
1521
nonmethod_func.__globals__,
1522
nonmethod_func.__name__,
1523
nonmethod_func.__defaults__,
1524
nonmethod_func.__closure__)
1525
new_function = (dbus.service.signal(
1526
alt_interface,
1527
attribute._dbus_signature)(new_function))
1528
# Copy annotations, if any
1529
try:
1530
new_function._dbus_annotations = dict(
1531
attribute._dbus_annotations)
1532
except AttributeError:
1533
pass
1534
# Define a creator of a function to call both the
1535
# original and alternate functions, so both the
1536
# original and alternate signals gets sent when
1537
# the function is called
1538
def fixscope(func1, func2):
1539
"""This function is a scope container to pass
1540
func1 and func2 to the "call_both" function
1541
outside of its arguments"""
1542
1543
@functools.wraps(func2)
1544
def call_both(*args, **kwargs):
1545
"""This function will emit two D-Bus
1546
signals by calling func1 and func2"""
1547
func1(*args, **kwargs)
1548
func2(*args, **kwargs)
1549
# Make wrapper function look like a D-Bus signal
1550
for name, attr in inspect.getmembers(func2):
1551
if name.startswith("_dbus_"):
1552
setattr(call_both, name, attr)
1553
1554
return call_both
1555
# Create the "call_both" function and add it to
1556
# the class
1557
attr[attrname] = fixscope(attribute, new_function)
1558
# Is this a D-Bus method?
1559
elif getattr(attribute, "_dbus_is_method", False):
1560
# Create a new, but exactly alike, function
1561
# object. Decorate it to be a new D-Bus method
1562
# with the alternate D-Bus interface name. Add it
1563
# to the class.
1564
attr[attrname] = (
1565
dbus.service.method(
1566
alt_interface,
1567
attribute._dbus_in_signature,
1568
attribute._dbus_out_signature)
1569
(types.FunctionType(attribute.func_code,
1570
attribute.func_globals,
1571
attribute.func_name,
1572
attribute.func_defaults,
1573
attribute.func_closure)))
1574
# Copy annotations, if any
1575
try:
1576
attr[attrname]._dbus_annotations = dict(
1577
attribute._dbus_annotations)
1578
except AttributeError:
1579
pass
1580
# Is this a D-Bus property?
1581
elif getattr(attribute, "_dbus_is_property", False):
1582
# Create a new, but exactly alike, function
1583
# object, and decorate it to be a new D-Bus
1584
# property with the alternate D-Bus interface
1585
# name. Add it to the class.
1586
attr[attrname] = (dbus_service_property(
1587
alt_interface, attribute._dbus_signature,
1588
attribute._dbus_access,
1589
attribute._dbus_get_args_options
1590
["byte_arrays"])
1591
(types.FunctionType(
1592
attribute.func_code,
1593
attribute.func_globals,
1594
attribute.func_name,
1595
attribute.func_defaults,
1596
attribute.func_closure)))
1597
# Copy annotations, if any
1598
try:
1599
attr[attrname]._dbus_annotations = dict(
1600
attribute._dbus_annotations)
1601
except AttributeError:
1602
pass
1603
# Is this a D-Bus interface?
1604
elif getattr(attribute, "_dbus_is_interface", False):
1605
# Create a new, but exactly alike, function
1606
# object. Decorate it to be a new D-Bus interface
1607
# with the alternate D-Bus interface name. Add it
1608
# to the class.
1609
attr[attrname] = (
1610
dbus_interface_annotations(alt_interface)
1611
(types.FunctionType(attribute.func_code,
1612
attribute.func_globals,
1613
attribute.func_name,
1614
attribute.func_defaults,
1615
attribute.func_closure)))
1616
if deprecate:
1617
# Deprecate all alternate interfaces
1618
iname="_AlternateDBusNames_interface_annotation{}"
1619
for interface_name in interface_names:
1620
1621
@dbus_interface_annotations(interface_name)
1622
def func(self):
1623
return { "org.freedesktop.DBus.Deprecated":
1624
"true" }
1625
# Find an unused name
1626
for aname in (iname.format(i)
1627
for i in itertools.count()):
1628
if aname not in attr:
1629
attr[aname] = func
1630
break
1631
if interface_names:
1632
# Replace the class with a new subclass of it with
1633
# methods, signals, etc. as created above.
1634
cls = type(b"{}Alternate".format(cls.__name__),
1635
(cls, ), attr)
1636
return cls
1637
1638
return wrapper
1639
1640
1641
@alternate_dbus_interfaces({"se.recompile.Mandos":
1642
"se.bsnet.fukt.Mandos"})
707
xml.parsers.expat.ExpatError), error:
708
logger.error("Failed to override Introspection method",
709
error)
710
return xmlstring
711
712
1643
713
class ClientDBus(Client, DBusObjectWithProperties):
1644
714
"""A Client class using D-Bus
1645
715
1649
719
"""
1650
720
1651
721
runtime_expansions = (Client.runtime_expansions
1652
+ ("dbus_object_path", ))
1653
1654
_interface = "se.recompile.Mandos.Client"
722
+ ("dbus_object_path",))
1655
723
1656
724
# dbus.service.Object doesn't use super(), so we can't either.
1657
725
1658
726
def __init__(self, bus = None, *args, **kwargs):
727
self._approvals_pending = 0
1659
728
self.bus = bus
1660
729
Client.__init__(self, *args, **kwargs)
1661
730
# Only now, when this client is initialized, can it show up on
1662
731
# the D-Bus
1663
client_object_name = str(self.name).translate(
732
client_object_name = unicode(self.name).translate(
1664
733
{ord("."): ord("_"),
1665
734
ord("-"): ord("_")})
1666
self.dbus_object_path = dbus.ObjectPath(
1667
"/clients/" + client_object_name)
735
self.dbus_object_path = (dbus.ObjectPath
736
("/clients/" + client_object_name))
1668
737
DBusObjectWithProperties.__init__(self, self.bus,
1669
738
self.dbus_object_path)
1670
1671
def notifychangeproperty(transform_func, dbus_name,
1672
type_func=lambda x: x,
1673
variant_level=1,
1674
invalidate_only=False,
1675
_interface=_interface):
1676
""" Modify a variable so that it's a property which announces
1677
its changes to DBus.
1678
1679
transform_fun: Function that takes a value and a variant_level
1680
and transforms it to a D-Bus type.
1681
dbus_name: D-Bus name of the variable
1682
type_func: Function that transform the value before sending it
1683
to the D-Bus. Default: no transform
1684
variant_level: D-Bus variant level. Default: 1
1685
"""
1686
attrname = "_{}".format(dbus_name)
1687
1688
def setter(self, value):
1689
if hasattr(self, "dbus_object_path"):
1690
if (not hasattr(self, attrname) or
1691
type_func(getattr(self, attrname, None))
1692
!= type_func(value)):
1693
if invalidate_only:
1694
self.PropertiesChanged(
1695
_interface, dbus.Dictionary(),
1696
dbus.Array((dbus_name, )))
1697
else:
1698
dbus_value = transform_func(
1699
type_func(value),
1700
variant_level = variant_level)
1701
self.PropertyChanged(dbus.String(dbus_name),
1702
dbus_value)
1703
self.PropertiesChanged(
1704
_interface,
1705
dbus.Dictionary({ dbus.String(dbus_name):
1706
dbus_value }),
1707
dbus.Array())
1708
setattr(self, attrname, value)
1709
1710
return property(lambda self: getattr(self, attrname), setter)
1711
1712
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1713
approvals_pending = notifychangeproperty(dbus.Boolean,
1714
"ApprovalPending",
1715
type_func = bool)
1716
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1717
last_enabled = notifychangeproperty(datetime_to_dbus,
1718
"LastEnabled")
1719
checker = notifychangeproperty(
1720
dbus.Boolean, "CheckerRunning",
1721
type_func = lambda checker: checker is not None)
1722
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1723
"LastCheckedOK")
1724
last_checker_status = notifychangeproperty(dbus.Int16,
1725
"LastCheckerStatus")
1726
last_approval_request = notifychangeproperty(
1727
datetime_to_dbus, "LastApprovalRequest")
1728
approved_by_default = notifychangeproperty(dbus.Boolean,
1729
"ApprovedByDefault")
1730
approval_delay = notifychangeproperty(
1731
dbus.UInt64, "ApprovalDelay",
1732
type_func = lambda td: td.total_seconds() * 1000)
1733
approval_duration = notifychangeproperty(
1734
dbus.UInt64, "ApprovalDuration",
1735
type_func = lambda td: td.total_seconds() * 1000)
1736
host = notifychangeproperty(dbus.String, "Host")
1737
timeout = notifychangeproperty(
1738
dbus.UInt64, "Timeout",
1739
type_func = lambda td: td.total_seconds() * 1000)
1740
extended_timeout = notifychangeproperty(
1741
dbus.UInt64, "ExtendedTimeout",
1742
type_func = lambda td: td.total_seconds() * 1000)
1743
interval = notifychangeproperty(
1744
dbus.UInt64, "Interval",
1745
type_func = lambda td: td.total_seconds() * 1000)
1746
checker_command = notifychangeproperty(dbus.String, "Checker")
1747
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1748
invalidate_only=True)
1749
1750
del notifychangeproperty
739
740
def _get_approvals_pending(self):
741
return self._approvals_pending
742
def _set_approvals_pending(self, value):
743
old_value = self._approvals_pending
744
self._approvals_pending = value
745
bval = bool(value)
746
if (hasattr(self, "dbus_object_path")
747
and bval is not bool(old_value)):
748
dbus_bool = dbus.Boolean(bval, variant_level=1)
749
self.PropertyChanged(dbus.String("ApprovalPending"),
750
dbus_bool)
751
752
approvals_pending = property(_get_approvals_pending,
753
_set_approvals_pending)
754
del _get_approvals_pending, _set_approvals_pending
755
756
@staticmethod
757
def _datetime_to_dbus(dt, variant_level=0):
758
"""Convert a UTC datetime.datetime() to a D-Bus type."""
759
return dbus.String(dt.isoformat(),
760
variant_level=variant_level)
761
762
def enable(self):
763
oldstate = getattr(self, "enabled", False)
764
r = Client.enable(self)
765
if oldstate != self.enabled:
766
# Emit D-Bus signals
767
self.PropertyChanged(dbus.String("Enabled"),
768
dbus.Boolean(True, variant_level=1))
769
self.PropertyChanged(
770
dbus.String("LastEnabled"),
771
self._datetime_to_dbus(self.last_enabled,
772
variant_level=1))
773
return r
774
775
def disable(self, quiet = False):
776
oldstate = getattr(self, "enabled", False)
777
r = Client.disable(self, quiet=quiet)
778
if not quiet and oldstate != self.enabled:
779
# Emit D-Bus signal
780
self.PropertyChanged(dbus.String("Enabled"),
781
dbus.Boolean(False, variant_level=1))
782
return r
1751
783
1752
784
def __del__(self, *args, **kwargs):
1753
785
try:
1758
790
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1759
791
Client.__del__(self, *args, **kwargs)
1760
792
1761
def checker_callback(self, source, condition,
1762
connection, command, *args, **kwargs):
1763
ret = Client.checker_callback(self, source, condition,
1764
connection, command, *args,
1765
**kwargs)
1766
exitstatus = self.last_checker_status
1767
if exitstatus >= 0:
793
def checker_callback(self, pid, condition, command,
794
*args, **kwargs):
795
self.checker_callback_tag = None
796
self.checker = None
797
# Emit D-Bus signal
798
self.PropertyChanged(dbus.String("CheckerRunning"),
799
dbus.Boolean(False, variant_level=1))
800
if os.WIFEXITED(condition):
801
exitstatus = os.WEXITSTATUS(condition)
1768
802
# Emit D-Bus signal
1769
803
self.CheckerCompleted(dbus.Int16(exitstatus),
1770
# This is specific to GNU libC
1771
dbus.Int64(exitstatus << 8),
804
dbus.Int64(condition),
1772
805
dbus.String(command))
1773
806
else:
1774
807
# Emit D-Bus signal
1775
808
self.CheckerCompleted(dbus.Int16(-1),
1776
dbus.Int64(
1777
# This is specific to GNU libC
1778
(exitstatus << 8)
1779
| self.last_checker_signal),
809
dbus.Int64(condition),
1780
810
dbus.String(command))
1781
return ret
811
812
return Client.checker_callback(self, pid, condition, command,
813
*args, **kwargs)
814
815
def checked_ok(self, *args, **kwargs):
816
r = Client.checked_ok(self, *args, **kwargs)
817
# Emit D-Bus signal
818
self.PropertyChanged(
819
dbus.String("LastCheckedOK"),
820
(self._datetime_to_dbus(self.last_checked_ok,
821
variant_level=1)))
822
return r
823
824
def need_approval(self, *args, **kwargs):
825
r = Client.need_approval(self, *args, **kwargs)
826
# Emit D-Bus signal
827
self.PropertyChanged(
828
dbus.String("LastApprovalRequest"),
829
(self._datetime_to_dbus(self.last_approval_request,
830
variant_level=1)))
831
return r
1782
832
1783
833
def start_checker(self, *args, **kwargs):
1784
old_checker_pid = getattr(self.checker, "pid", None)
834
old_checker = self.checker
835
if self.checker is not None:
836
old_checker_pid = self.checker.pid
837
else:
838
old_checker_pid = None
1785
839
r = Client.start_checker(self, *args, **kwargs)
1786
840
# Only if new checker process was started
1787
841
if (self.checker is not None
1788
842
and old_checker_pid != self.checker.pid):
1789
843
# Emit D-Bus signal
1790
844
self.CheckerStarted(self.current_checker_command)
845
self.PropertyChanged(
846
dbus.String("CheckerRunning"),
847
dbus.Boolean(True, variant_level=1))
1791
848
return r
1792
849
850
def stop_checker(self, *args, **kwargs):
851
old_checker = getattr(self, "checker", None)
852
r = Client.stop_checker(self, *args, **kwargs)
853
if (old_checker is not None
854
and getattr(self, "checker", None) is None):
855
self.PropertyChanged(dbus.String("CheckerRunning"),
856
dbus.Boolean(False, variant_level=1))
857
return r
858
1793
859
def _reset_approved(self):
1794
self.approved = None
860
self._approved = None
1795
861
return False
1796
862
1797
863
def approve(self, value=True):
1798
self.approved = value
1799
gobject.timeout_add(int(self.approval_duration.total_seconds()
1800
* 1000), self._reset_approved)
1801
864
self.send_changedstate()
865
self._approved = value
866
gobject.timeout_add(self._timedelta_to_milliseconds
867
(self.approval_duration),
868
self._reset_approved)
869
1802
870
1803
871
## D-Bus methods, signals & properties
1804
1805
## Interfaces
872
_interface = "se.bsnet.fukt.Mandos.Client"
1806
873
1807
874
## Signals
1808
875
1819
886
pass
1820
887
1821
888
# PropertyChanged - signal
1822
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1823
889
@dbus.service.signal(_interface, signature="sv")
1824
890
def PropertyChanged(self, property, value):
1825
891
"D-Bus signal"
1856
922
# CheckedOK - method
1857
923
@dbus.service.method(_interface)
1858
924
def CheckedOK(self):
1859
self.checked_ok()
925
return self.checked_ok()
1860
926
1861
927
# Enable - method
1862
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1863
928
@dbus.service.method(_interface)
1864
929
def Enable(self):
1865
930
"D-Bus method"
1866
931
self.enable()
1867
932
1868
933
# StartChecker - method
1869
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1870
934
@dbus.service.method(_interface)
1871
935
def StartChecker(self):
1872
936
"D-Bus method"
1873
937
self.start_checker()
1874
938
1875
939
# Disable - method
1876
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1877
940
@dbus.service.method(_interface)
1878
941
def Disable(self):
1879
942
"D-Bus method"
1880
943
self.disable()
1881
944
1882
945
# StopChecker - method
1883
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1884
946
@dbus.service.method(_interface)
1885
947
def StopChecker(self):
1886
948
self.stop_checker()
1893
955
return dbus.Boolean(bool(self.approvals_pending))
1894
956
1895
957
# ApprovedByDefault - property
1896
@dbus_service_property(_interface,
1897
signature="b",
958
@dbus_service_property(_interface, signature="b",
1898
959
access="readwrite")
1899
960
def ApprovedByDefault_dbus_property(self, value=None):
1900
961
if value is None: # get
1901
962
return dbus.Boolean(self.approved_by_default)
1902
963
self.approved_by_default = bool(value)
964
# Emit D-Bus signal
965
self.PropertyChanged(dbus.String("ApprovedByDefault"),
966
dbus.Boolean(value, variant_level=1))
1903
967
1904
968
# ApprovalDelay - property
1905
@dbus_service_property(_interface,
1906
signature="t",
969
@dbus_service_property(_interface, signature="t",
1907
970
access="readwrite")
1908
971
def ApprovalDelay_dbus_property(self, value=None):
1909
972
if value is None: # get
1910
return dbus.UInt64(self.approval_delay.total_seconds()
1911
* 1000)
973
return dbus.UInt64(self.approval_delay_milliseconds())
1912
974
self.approval_delay = datetime.timedelta(0, 0, 0, value)
975
# Emit D-Bus signal
976
self.PropertyChanged(dbus.String("ApprovalDelay"),
977
dbus.UInt64(value, variant_level=1))
1913
978
1914
979
# ApprovalDuration - property
1915
@dbus_service_property(_interface,
1916
signature="t",
980
@dbus_service_property(_interface, signature="t",
1917
981
access="readwrite")
1918
982
def ApprovalDuration_dbus_property(self, value=None):
1919
983
if value is None: # get
1920
return dbus.UInt64(self.approval_duration.total_seconds()
1921
* 1000)
984
return dbus.UInt64(self._timedelta_to_milliseconds(
985
self.approval_duration))
1922
986
self.approval_duration = datetime.timedelta(0, 0, 0, value)
987
# Emit D-Bus signal
988
self.PropertyChanged(dbus.String("ApprovalDuration"),
989
dbus.UInt64(value, variant_level=1))
1923
990
1924
991
# Name - property
1925
@dbus_annotations(
1926
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1927
992
@dbus_service_property(_interface, signature="s", access="read")
1928
993
def Name_dbus_property(self):
1929
994
return dbus.String(self.name)
1930
995
1931
996
# Fingerprint - property
1932
@dbus_annotations(
1933
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1934
997
@dbus_service_property(_interface, signature="s", access="read")
1935
998
def Fingerprint_dbus_property(self):
1936
999
return dbus.String(self.fingerprint)
1937
1000
1938
1001
# Host - property
1939
@dbus_service_property(_interface,
1940
signature="s",
1002
@dbus_service_property(_interface, signature="s",
1941
1003
access="readwrite")
1942
1004
def Host_dbus_property(self, value=None):
1943
1005
if value is None: # get
1944
1006
return dbus.String(self.host)
1945
self.host = str(value)
1007
self.host = value
1008
# Emit D-Bus signal
1009
self.PropertyChanged(dbus.String("Host"),
1010
dbus.String(value, variant_level=1))
1946
1011
1947
1012
# Created - property
1948
@dbus_annotations(
1949
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1950
1013
@dbus_service_property(_interface, signature="s", access="read")
1951
1014
def Created_dbus_property(self):
1952
return datetime_to_dbus(self.created)
1015
return dbus.String(self._datetime_to_dbus(self.created))
1953
1016
1954
1017
# LastEnabled - property
1955
1018
@dbus_service_property(_interface, signature="s", access="read")
1956
1019
def LastEnabled_dbus_property(self):
1957
return datetime_to_dbus(self.last_enabled)
1020
if self.last_enabled is None:
1021
return dbus.String("")
1022
return dbus.String(self._datetime_to_dbus(self.last_enabled))
1958
1023
1959
1024
# Enabled - property
1960
@dbus_service_property(_interface,
1961
signature="b",
1025
@dbus_service_property(_interface, signature="b",
1962
1026
access="readwrite")
1963
1027
def Enabled_dbus_property(self, value=None):
1964
1028
if value is None: # get
1969
1033
self.disable()
1970
1034
1971
1035
# LastCheckedOK - property
1972
@dbus_service_property(_interface,
1973
signature="s",
1036
@dbus_service_property(_interface, signature="s",
1974
1037
access="readwrite")
1975
1038
def LastCheckedOK_dbus_property(self, value=None):
1976
1039
if value is not None:
1977
1040
self.checked_ok()
1978
1041
return
1979
return datetime_to_dbus(self.last_checked_ok)
1980
1981
# LastCheckerStatus - property
1982
@dbus_service_property(_interface, signature="n", access="read")
1983
def LastCheckerStatus_dbus_property(self):
1984
return dbus.Int16(self.last_checker_status)
1985
1986
# Expires - property
1987
@dbus_service_property(_interface, signature="s", access="read")
1988
def Expires_dbus_property(self):
1989
return datetime_to_dbus(self.expires)
1042
if self.last_checked_ok is None:
1043
return dbus.String("")
1044
return dbus.String(self._datetime_to_dbus(self
1045
.last_checked_ok))
1990
1046
1991
1047
# LastApprovalRequest - property
1992
1048
@dbus_service_property(_interface, signature="s", access="read")
1993
1049
def LastApprovalRequest_dbus_property(self):
1994
return datetime_to_dbus(self.last_approval_request)
1050
if self.last_approval_request is None:
1051
return dbus.String("")
1052
return dbus.String(self.
1053
_datetime_to_dbus(self
1054
.last_approval_request))
1995
1055
1996
1056
# Timeout - property
1997
@dbus_service_property(_interface,
1998
signature="t",
1057
@dbus_service_property(_interface, signature="t",
1999
1058
access="readwrite")
2000
1059
def Timeout_dbus_property(self, value=None):
2001
1060
if value is None: # get
2002
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2003
old_timeout = self.timeout
1061
return dbus.UInt64(self.timeout_milliseconds())
2004
1062
self.timeout = datetime.timedelta(0, 0, 0, value)
2005
# Reschedule disabling
2006
if self.enabled:
2007
now = datetime.datetime.utcnow()
2008
self.expires += self.timeout - old_timeout
2009
if self.expires <= now:
2010
# The timeout has passed
2011
self.disable()
2012
else:
2013
if (getattr(self, "disable_initiator_tag", None)
2014
is None):
2015
return
2016
gobject.source_remove(self.disable_initiator_tag)
2017
self.disable_initiator_tag = gobject.timeout_add(
2018
int((self.expires - now).total_seconds() * 1000),
2019
self.disable)
2020
2021
# ExtendedTimeout - property
2022
@dbus_service_property(_interface,
2023
signature="t",
2024
access="readwrite")
2025
def ExtendedTimeout_dbus_property(self, value=None):
2026
if value is None: # get
2027
return dbus.UInt64(self.extended_timeout.total_seconds()
2028
* 1000)
2029
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1063
# Emit D-Bus signal
1064
self.PropertyChanged(dbus.String("Timeout"),
1065
dbus.UInt64(value, variant_level=1))
1066
if getattr(self, "disable_initiator_tag", None) is None:
1067
return
1068
# Reschedule timeout
1069
gobject.source_remove(self.disable_initiator_tag)
1070
self.disable_initiator_tag = None
1071
time_to_die = (self.
1072
_timedelta_to_milliseconds((self
1073
.last_checked_ok
1074
+ self.timeout)
1075
- datetime.datetime
1076
.utcnow()))
1077
if time_to_die <= 0:
1078
# The timeout has passed
1079
self.disable()
1080
else:
1081
self.disable_initiator_tag = (gobject.timeout_add
1082
(time_to_die, self.disable))
2030
1083
2031
1084
# Interval - property
2032
@dbus_service_property(_interface,
2033
signature="t",
1085
@dbus_service_property(_interface, signature="t",
2034
1086
access="readwrite")
2035
1087
def Interval_dbus_property(self, value=None):
2036
1088
if value is None: # get
2037
return dbus.UInt64(self.interval.total_seconds() * 1000)
1089
return dbus.UInt64(self.interval_milliseconds())
2038
1090
self.interval = datetime.timedelta(0, 0, 0, value)
1091
# Emit D-Bus signal
1092
self.PropertyChanged(dbus.String("Interval"),
1093
dbus.UInt64(value, variant_level=1))
2039
1094
if getattr(self, "checker_initiator_tag", None) is None:
2040
1095
return
2041
if self.enabled:
2042
# Reschedule checker run
2043
gobject.source_remove(self.checker_initiator_tag)
2044
self.checker_initiator_tag = gobject.timeout_add(
2045
value, self.start_checker)
2046
self.start_checker() # Start one now, too
2047
1096
# Reschedule checker run
1097
gobject.source_remove(self.checker_initiator_tag)
1098
self.checker_initiator_tag = (gobject.timeout_add
1099
(value, self.start_checker))
1100
self.start_checker() # Start one now, too
1101
2048
1102
# Checker - property
2049
@dbus_service_property(_interface,
2050
signature="s",
1103
@dbus_service_property(_interface, signature="s",
2051
1104
access="readwrite")
2052
1105
def Checker_dbus_property(self, value=None):
2053
1106
if value is None: # get
2054
1107
return dbus.String(self.checker_command)
2055
self.checker_command = str(value)
1108
self.checker_command = value
1109
# Emit D-Bus signal
1110
self.PropertyChanged(dbus.String("Checker"),
1111
dbus.String(self.checker_command,
1112
variant_level=1))
2056
1113
2057
1114
# CheckerRunning - property
2058
@dbus_service_property(_interface,
2059
signature="b",
1115
@dbus_service_property(_interface, signature="b",
2060
1116
access="readwrite")
2061
1117
def CheckerRunning_dbus_property(self, value=None):
2062
1118
if value is None: # get
2067
1123
self.stop_checker()
2068
1124
2069
1125
# ObjectPath - property
2070
@dbus_annotations(
2071
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2072
"org.freedesktop.DBus.Deprecated": "true"})
2073
1126
@dbus_service_property(_interface, signature="o", access="read")
2074
1127
def ObjectPath_dbus_property(self):
2075
1128
return self.dbus_object_path # is already a dbus.ObjectPath
2076
1129
2077
1130
# Secret = property
2078
@dbus_annotations(
2079
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2080
"invalidates"})
2081
@dbus_service_property(_interface,
2082
signature="ay",
2083
access="write",
2084
byte_arrays=True)
1131
@dbus_service_property(_interface, signature="ay",
1132
access="write", byte_arrays=True)
2085
1133
def Secret_dbus_property(self, value):
2086
self.secret = bytes(value)
1134
self.secret = str(value)
2087
1135
2088
1136
del _interface
2089
1137
2093
1141
self._pipe = child_pipe
2094
1142
self._pipe.send(('init', fpr, address))
2095
1143
if not self._pipe.recv():
2096
raise KeyError(fpr)
2097
1144
raise KeyError()
1145
2098
1146
def __getattribute__(self, name):
2099
if name == '_pipe':
1147
if(name == '_pipe'):
2100
1148
return super(ProxyClient, self).__getattribute__(name)
2101
1149
self._pipe.send(('getattr', name))
2102
1150
data = self._pipe.recv()
2103
1151
if data[0] == 'data':
2104
1152
return data[1]
2105
1153
if data[0] == 'function':
2106
2107
1154
def func(*args, **kwargs):
2108
1155
self._pipe.send(('funcall', name, args, kwargs))
2109
1156
return self._pipe.recv()[1]
2110
2111
1157
return func
2112
1158
2113
1159
def __setattr__(self, name, value):
2114
if name == '_pipe':
1160
if(name == '_pipe'):
2115
1161
return super(ProxyClient, self).__setattr__(name, value)
2116
1162
self._pipe.send(('setattr', name, value))
2117
1163
2125
1171
def handle(self):
2126
1172
with contextlib.closing(self.server.child_pipe) as child_pipe:
2127
1173
logger.info("TCP connection from: %s",
2128
str(self.client_address))
1174
unicode(self.client_address))
2129
1175
logger.debug("Pipe FD: %d",
2130
1176
self.server.child_pipe.fileno())
2131
2132
session = gnutls.ClientSession(self.request)
2133
1177
1178
session = (gnutls.connection
1179
.ClientSession(self.request,
1180
gnutls.connection
1181
.X509Credentials()))
1182
1183
# Note: gnutls.connection.X509Credentials is really a
1184
# generic GnuTLS certificate credentials object so long as
1185
# no X.509 keys are added to it. Therefore, we can use it
1186
# here despite using OpenPGP certificates.
1187
2134
1188
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
2135
1189
# "+AES-256-CBC", "+SHA1",
2136
1190
# "+COMP-NULL", "+CTYPE-OPENPGP",
2139
1193
priority = self.server.gnutls_priority
2140
1194
if priority is None:
2141
1195
priority = "NORMAL"
2142
gnutls.priority_set_direct(session._c_object, priority,
2143
None)
2144
1196
(gnutls.library.functions
1197
.gnutls_priority_set_direct(session._c_object,
1198
priority, None))
1199
2145
1200
# Start communication using the Mandos protocol
2146
1201
# Get protocol number
2147
1202
line = self.request.makefile().readline()
2148
1203
logger.debug("Protocol version: %r", line)
2149
1204
try:
2150
1205
if int(line.strip().split()[0]) > 1:
2151
raise RuntimeError(line)
2152
except (ValueError, IndexError, RuntimeError) as error:
1206
raise RuntimeError
1207
except (ValueError, IndexError, RuntimeError), error:
2153
1208
logger.error("Unknown protocol version: %s", error)
2154
1209
return
2155
1210
2156
1211
# Start GnuTLS connection
2157
1212
try:
2158
1213
session.handshake()
2159
except gnutls.Error as error:
1214
except gnutls.errors.GNUTLSError, error:
2160
1215
logger.warning("Handshake failed: %s", error)
2161
1216
# Do not run session.bye() here: the session is not
2162
1217
# established. Just abandon the request.
2163
1218
return
2164
1219
logger.debug("Handshake succeeded")
2165
1220
2166
1221
approval_required = False
2167
1222
try:
2168
1223
try:
2169
fpr = self.fingerprint(
2170
self.peer_certificate(session))
2171
except (TypeError, gnutls.Error) as error:
1224
fpr = self.fingerprint(self.peer_certificate
1225
(session))
1226
except (TypeError, gnutls.errors.GNUTLSError), error:
2172
1227
logger.warning("Bad certificate: %s", error)
2173
1228
return
2174
1229
logger.debug("Fingerprint: %s", fpr)
2175
1230
2176
1231
try:
2177
1232
client = ProxyClient(child_pipe, fpr,
2178
1233
self.client_address)
2186
1241
2187
1242
while True:
2188
1243
if not client.enabled:
2189
logger.info("Client %s is disabled",
2190
client.name)
1244
logger.warning("Client %s is disabled",
1245
client.name)
2191
1246
if self.server.use_dbus:
2192
1247
# Emit D-Bus signal
2193
client.Rejected("Disabled")
1248
client.Rejected("Disabled")
2194
1249
return
2195
1250
2196
if client.approved or not client.approval_delay:
1251
if client._approved or not client.approval_delay:
2197
1252
#We are approved or approval is disabled
2198
1253
break
2199
elif client.approved is None:
1254
elif client._approved is None:
2200
1255
logger.info("Client %s needs approval",
2201
1256
client.name)
2202
1257
if self.server.use_dbus:
2203
1258
# Emit D-Bus signal
2204
1259
client.NeedApproval(
2205
client.approval_delay.total_seconds()
2206
* 1000, client.approved_by_default)
1260
client.approval_delay_milliseconds(),
1261
client.approved_by_default)
2207
1262
else:
2208
1263
logger.warning("Client %s was not approved",
2209
1264
client.name)
2213
1268
return
2214
1269
2215
1270
#wait until timeout or approved
1271
#x = float(client._timedelta_to_milliseconds(delay))
2216
1272
time = datetime.datetime.now()
2217
1273
client.changedstate.acquire()
2218
client.changedstate.wait(delay.total_seconds())
1274
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
2219
1275
client.changedstate.release()
2220
1276
time2 = datetime.datetime.now()
2221
1277
if (time2 - time) >= delay:
2232
1288
else:
2233
1289
delay -= time2 - time
2234
1290
2235
try:
2236
session.send(client.secret)
2237
except gnutls.Error as error:
2238
logger.warning("gnutls send failed",
2239
exc_info = error)
2240
return
2241
1291
sent_size = 0
1292
while sent_size < len(client.secret):
1293
try:
1294
sent = session.send(client.secret[sent_size:])
1295
except (gnutls.errors.GNUTLSError), error:
1296
logger.warning("gnutls send failed")
1297
return
1298
logger.debug("Sent: %d, remaining: %d",
1299
sent, len(client.secret)
1300
- (sent_size + sent))
1301
sent_size += sent
1302
2242
1303
logger.info("Sending secret to %s", client.name)
2243
# bump the timeout using extended_timeout
2244
client.bump_timeout(client.extended_timeout)
1304
# bump the timeout as if seen
1305
client.checked_ok()
2245
1306
if self.server.use_dbus:
2246
1307
# Emit D-Bus signal
2247
1308
client.GotSecret()
2251
1312
client.approvals_pending -= 1
2252
1313
try:
2253
1314
session.bye()
2254
except gnutls.Error as error:
2255
logger.warning("GnuTLS bye failed",
2256
exc_info=error)
1315
except (gnutls.errors.GNUTLSError), error:
1316
logger.warning("GnuTLS bye failed")
2257
1317
2258
1318
@staticmethod
2259
1319
def peer_certificate(session):
2260
1320
"Return the peer's OpenPGP certificate as a bytestring"
2261
1321
# If not an OpenPGP certificate...
2262
if (gnutls.certificate_type_get(session._c_object)
2263
!= gnutls.CRT_OPENPGP):
2264
# ...return invalid data
2265
return b""
1322
if (gnutls.library.functions
1323
.gnutls_certificate_type_get(session._c_object)
1324
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1325
# ...do the normal thing
1326
return session.peer_certificate
2266
1327
list_size = ctypes.c_uint(1)
2267
cert_list = (gnutls.certificate_get_peers
1328
cert_list = (gnutls.library.functions
1329
.gnutls_certificate_get_peers
2268
1330
(session._c_object, ctypes.byref(list_size)))
2269
1331
if not bool(cert_list) and list_size.value != 0:
2270
raise gnutls.Error("error getting peer certificate")
1332
raise gnutls.errors.GNUTLSError("error getting peer"
1333
" certificate")
2271
1334
if list_size.value == 0:
2272
1335
return None
2273
1336
cert = cert_list[0]
2277
1340
def fingerprint(openpgp):
2278
1341
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2279
1342
# New GnuTLS "datum" with the OpenPGP public key
2280
datum = gnutls.datum_t(
2281
ctypes.cast(ctypes.c_char_p(openpgp),
2282
ctypes.POINTER(ctypes.c_ubyte)),
2283
ctypes.c_uint(len(openpgp)))
1343
datum = (gnutls.library.types
1344
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1345
ctypes.POINTER
1346
(ctypes.c_ubyte)),
1347
ctypes.c_uint(len(openpgp))))
2284
1348
# New empty GnuTLS certificate
2285
crt = gnutls.openpgp_crt_t()
2286
gnutls.openpgp_crt_init(ctypes.byref(crt))
1349
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1350
(gnutls.library.functions
1351
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2287
1352
# Import the OpenPGP public key into the certificate
2288
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2289
gnutls.OPENPGP_FMT_RAW)
1353
(gnutls.library.functions
1354
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1355
gnutls.library.constants
1356
.GNUTLS_OPENPGP_FMT_RAW))
2290
1357
# Verify the self signature in the key
2291
1358
crtverify = ctypes.c_uint()
2292
gnutls.openpgp_crt_verify_self(crt, 0,
2293
ctypes.byref(crtverify))
1359
(gnutls.library.functions
1360
.gnutls_openpgp_crt_verify_self(crt, 0,
1361
ctypes.byref(crtverify)))
2294
1362
if crtverify.value != 0:
2295
gnutls.openpgp_crt_deinit(crt)
2296
raise gnutls.CertificateSecurityError("Verify failed")
1363
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1364
raise (gnutls.errors.CertificateSecurityError
1365
("Verify failed"))
2297
1366
# New buffer for the fingerprint
2298
1367
buf = ctypes.create_string_buffer(20)
2299
1368
buf_len = ctypes.c_size_t()
2300
1369
# Get the fingerprint from the certificate into the buffer
2301
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2302
ctypes.byref(buf_len))
1370
(gnutls.library.functions
1371
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1372
ctypes.byref(buf_len)))
2303
1373
# Deinit the certificate
2304
gnutls.openpgp_crt_deinit(crt)
1374
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2305
1375
# Convert the buffer to a Python bytestring
2306
1376
fpr = ctypes.string_at(buf, buf_len.value)
2307
1377
# Convert the bytestring to hexadecimal notation
2308
hex_fpr = binascii.hexlify(fpr).upper()
1378
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
2309
1379
return hex_fpr
2310
1380
2311
1381
2312
1382
class MultiprocessingMixIn(object):
2313
1383
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2314
2315
1384
def sub_process_main(self, request, address):
2316
1385
try:
2317
1386
self.finish_request(request, address)
2318
except Exception:
1387
except:
2319
1388
self.handle_error(request, address)
2320
1389
self.close_request(request)
2321
1390
2322
1391
def process_request(self, request, address):
2323
1392
"""Start a new process to process the request."""
2324
proc = multiprocessing.Process(target = self.sub_process_main,
2325
args = (request, address))
2326
proc.start()
2327
return proc
2328
1393
multiprocessing.Process(target = self.sub_process_main,
1394
args = (request, address)).start()
2329
1395
2330
1396
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2331
1397
""" adds a pipe to the MixIn """
2332
2333
1398
def process_request(self, request, client_address):
2334
1399
"""Overrides and wraps the original process_request().
2335
1400
2336
1401
This function creates a new pipe in self.pipe
2337
1402
"""
2338
1403
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2339
2340
proc = MultiprocessingMixIn.process_request(self, request,
2341
client_address)
1404
1405
super(MultiprocessingMixInWithPipe,
1406
self).process_request(request, client_address)
2342
1407
self.child_pipe.close()
2343
self.add_pipe(parent_pipe, proc)
2344
2345
def add_pipe(self, parent_pipe, proc):
1408
self.add_pipe(parent_pipe)
1409
1410
def add_pipe(self, parent_pipe):
2346
1411
"""Dummy function; override as necessary"""
2347
raise NotImplementedError()
2348
1412
raise NotImplementedError
2349
1413
2350
1414
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2351
1415
socketserver.TCPServer, object):
2356
1420
interface: None or a network interface name (string)
2357
1421
use_ipv6: Boolean; to use IPv6 or not
2358
1422
"""
2359
2360
1423
def __init__(self, server_address, RequestHandlerClass,
2361
interface=None,
2362
use_ipv6=True,
2363
socketfd=None):
2364
"""If socketfd is set, use that file descriptor instead of
2365
creating a new one with socket.socket().
2366
"""
1424
interface=None, use_ipv6=True):
2367
1425
self.interface = interface
2368
1426
if use_ipv6:
2369
1427
self.address_family = socket.AF_INET6
2370
if socketfd is not None:
2371
# Save the file descriptor
2372
self.socketfd = socketfd
2373
# Save the original socket.socket() function
2374
self.socket_socket = socket.socket
2375
# To implement --socket, we monkey patch socket.socket.
2376
#
2377
# (When socketserver.TCPServer is a new-style class, we
2378
# could make self.socket into a property instead of monkey
2379
# patching socket.socket.)
2380
#
2381
# Create a one-time-only replacement for socket.socket()
2382
@functools.wraps(socket.socket)
2383
def socket_wrapper(*args, **kwargs):
2384
# Restore original function so subsequent calls are
2385
# not affected.
2386
socket.socket = self.socket_socket
2387
del self.socket_socket
2388
# This time only, return a new socket object from the
2389
# saved file descriptor.
2390
return socket.fromfd(self.socketfd, *args, **kwargs)
2391
# Replace socket.socket() function with wrapper
2392
socket.socket = socket_wrapper
2393
# The socketserver.TCPServer.__init__ will call
2394
# socket.socket(), which might be our replacement,
2395
# socket_wrapper(), if socketfd was set.
2396
1428
socketserver.TCPServer.__init__(self, server_address,
2397
1429
RequestHandlerClass)
2398
2399
1430
def server_bind(self):
2400
1431
"""This overrides the normal server_bind() function
2401
1432
to bind to an interface if one was specified, and also NOT to
2407
1438
self.interface)
2408
1439
else:
2409
1440
try:
2410
self.socket.setsockopt(
2411
socket.SOL_SOCKET, SO_BINDTODEVICE,
2412
(self.interface + "\0").encode("utf-8"))
2413
except socket.error as error:
2414
if error.errno == errno.EPERM:
2415
logger.error("No permission to bind to"
2416
" interface %s", self.interface)
2417
elif error.errno == errno.ENOPROTOOPT:
1441
self.socket.setsockopt(socket.SOL_SOCKET,
1442
SO_BINDTODEVICE,
1443
str(self.interface
1444
+ '\0'))
1445
except socket.error, error:
1446
if error[0] == errno.EPERM:
1447
logger.error("No permission to"
1448
" bind to interface %s",
1449
self.interface)
1450
elif error[0] == errno.ENOPROTOOPT:
2418
1451
logger.error("SO_BINDTODEVICE not available;"
2419
1452
" cannot bind to interface %s",
2420
1453
self.interface)
2421
elif error.errno == errno.ENODEV:
2422
logger.error("Interface %s does not exist,"
2423
" cannot bind", self.interface)
2424
1454
else:
2425
1455
raise
2426
1456
# Only bind(2) the socket if we really need to.
2429
1459
if self.address_family == socket.AF_INET6:
2430
1460
any_address = "::" # in6addr_any
2431
1461
else:
2432
any_address = "0.0.0.0" # INADDR_ANY
1462
any_address = socket.INADDR_ANY
2433
1463
self.server_address = (any_address,
2434
1464
self.server_address[1])
2435
1465
elif not self.server_address[1]:
2436
self.server_address = (self.server_address[0], 0)
1466
self.server_address = (self.server_address[0],
1467
0)
2437
1468
# if self.interface:
2438
1469
# self.server_address = (self.server_address[0],
2439
1470
# 0, # port
2453
1484
2454
1485
Assumes a gobject.MainLoop event loop.
2455
1486
"""
2456
2457
1487
def __init__(self, server_address, RequestHandlerClass,
2458
interface=None,
2459
use_ipv6=True,
2460
clients=None,
2461
gnutls_priority=None,
2462
use_dbus=True,
2463
socketfd=None):
1488
interface=None, use_ipv6=True, clients=None,
1489
gnutls_priority=None, use_dbus=True):
2464
1490
self.enabled = False
2465
1491
self.clients = clients
2466
1492
if self.clients is None:
2467
self.clients = {}
1493
self.clients = set()
2468
1494
self.use_dbus = use_dbus
2469
1495
self.gnutls_priority = gnutls_priority
2470
1496
IPv6_TCPServer.__init__(self, server_address,
2471
1497
RequestHandlerClass,
2472
1498
interface = interface,
2473
use_ipv6 = use_ipv6,
2474
socketfd = socketfd)
2475
1499
use_ipv6 = use_ipv6)
2476
1500
def server_activate(self):
2477
1501
if self.enabled:
2478
1502
return socketserver.TCPServer.server_activate(self)
2479
2480
1503
def enable(self):
2481
1504
self.enabled = True
2482
2483
def add_pipe(self, parent_pipe, proc):
1505
def add_pipe(self, parent_pipe):
2484
1506
# Call "handle_ipc" for both data and EOF events
2485
gobject.io_add_watch(
2486
parent_pipe.fileno(),
2487
gobject.IO_IN | gobject.IO_HUP,
2488
functools.partial(self.handle_ipc,
2489
parent_pipe = parent_pipe,
2490
proc = proc))
2491
2492
def handle_ipc(self, source, condition,
2493
parent_pipe=None,
2494
proc = None,
1507
gobject.io_add_watch(parent_pipe.fileno(),
1508
gobject.IO_IN | gobject.IO_HUP,
1509
functools.partial(self.handle_ipc,
1510
parent_pipe = parent_pipe))
1511
1512
def handle_ipc(self, source, condition, parent_pipe=None,
2495
1513
client_object=None):
2496
# error, or the other end of multiprocessing.Pipe has closed
2497
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2498
# Wait for other process to exit
2499
proc.join()
1514
condition_names = {
1515
gobject.IO_IN: "IN", # There is data to read.
1516
gobject.IO_OUT: "OUT", # Data can be written (without
1517
# blocking).
1518
gobject.IO_PRI: "PRI", # There is urgent data to read.
1519
gobject.IO_ERR: "ERR", # Error condition.
1520
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1521
# broken, usually for pipes and
1522
# sockets).
1523
}
1524
conditions_string = ' | '.join(name
1525
for cond, name in
1526
condition_names.iteritems()
1527
if cond & condition)
1528
# error or the other end of multiprocessing.Pipe has closed
1529
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2500
1530
return False
2501
1531
2502
1532
# Read a request from the child
2507
1537
fpr = request[1]
2508
1538
address = request[2]
2509
1539
2510
for c in self.clients.itervalues():
1540
for c in self.clients:
2511
1541
if c.fingerprint == fpr:
2512
1542
client = c
2513
1543
break
2514
1544
else:
2515
logger.info("Client not found for fingerprint: %s, ad"
2516
"dress: %s", fpr, address)
1545
logger.warning("Client not found for fingerprint: %s, ad"
1546
"dress: %s", fpr, address)
2517
1547
if self.use_dbus:
2518
1548
# Emit D-Bus signal
2519
mandos_dbus_service.ClientNotFound(fpr,
2520
address[0])
1549
mandos_dbus_service.ClientNotFound(fpr, address[0])
2521
1550
parent_pipe.send(False)
2522
1551
return False
2523
1552
2524
gobject.io_add_watch(
2525
parent_pipe.fileno(),
2526
gobject.IO_IN | gobject.IO_HUP,
2527
functools.partial(self.handle_ipc,
2528
parent_pipe = parent_pipe,
2529
proc = proc,
2530
client_object = client))
1553
gobject.io_add_watch(parent_pipe.fileno(),
1554
gobject.IO_IN | gobject.IO_HUP,
1555
functools.partial(self.handle_ipc,
1556
parent_pipe = parent_pipe,
1557
client_object = client))
2531
1558
parent_pipe.send(True)
2532
# remove the old hook in favor of the new above hook on
2533
# same fileno
1559
# remove the old hook in favor of the new above hook on same fileno
2534
1560
return False
2535
1561
if command == 'funcall':
2536
1562
funcname = request[1]
2537
1563
args = request[2]
2538
1564
kwargs = request[3]
2539
1565
2540
parent_pipe.send(('data', getattr(client_object,
2541
funcname)(*args,
2542
**kwargs)))
2543
1566
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
1567
2544
1568
if command == 'getattr':
2545
1569
attrname = request[1]
2546
if isinstance(client_object.__getattribute__(attrname),
2547
collections.Callable):
2548
parent_pipe.send(('function', ))
1570
if callable(client_object.__getattribute__(attrname)):
1571
parent_pipe.send(('function',))
2549
1572
else:
2550
parent_pipe.send((
2551
'data', client_object.__getattribute__(attrname)))
1573
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
2552
1574
2553
1575
if command == 'setattr':
2554
1576
attrname = request[1]
2555
1577
value = request[2]
2556
1578
setattr(client_object, attrname, value)
2557
1579
2558
1580
return True
2559
1581
2560
1582
2561
def rfc3339_duration_to_delta(duration):
2562
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2563
2564
>>> rfc3339_duration_to_delta("P7D")
2565
datetime.timedelta(7)
2566
>>> rfc3339_duration_to_delta("PT60S")
2567
datetime.timedelta(0, 60)
2568
>>> rfc3339_duration_to_delta("PT60M")
2569
datetime.timedelta(0, 3600)
2570
>>> rfc3339_duration_to_delta("PT24H")
2571
datetime.timedelta(1)
2572
>>> rfc3339_duration_to_delta("P1W")
2573
datetime.timedelta(7)
2574
>>> rfc3339_duration_to_delta("PT5M30S")
2575
datetime.timedelta(0, 330)
2576
>>> rfc3339_duration_to_delta("P1DT3M20S")
2577
datetime.timedelta(1, 200)
2578
"""
2579
2580
# Parsing an RFC 3339 duration with regular expressions is not
2581
# possible - there would have to be multiple places for the same
2582
# values, like seconds. The current code, while more esoteric, is
2583
# cleaner without depending on a parsing library. If Python had a
2584
# built-in library for parsing we would use it, but we'd like to
2585
# avoid excessive use of external libraries.
2586
2587
# New type for defining tokens, syntax, and semantics all-in-one
2588
Token = collections.namedtuple("Token", (
2589
"regexp", # To match token; if "value" is not None, must have
2590
# a "group" containing digits
2591
"value", # datetime.timedelta or None
2592
"followers")) # Tokens valid after this token
2593
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2594
# the "duration" ABNF definition in RFC 3339, Appendix A.
2595
token_end = Token(re.compile(r"$"), None, frozenset())
2596
token_second = Token(re.compile(r"(\d+)S"),
2597
datetime.timedelta(seconds=1),
2598
frozenset((token_end, )))
2599
token_minute = Token(re.compile(r"(\d+)M"),
2600
datetime.timedelta(minutes=1),
2601
frozenset((token_second, token_end)))
2602
token_hour = Token(re.compile(r"(\d+)H"),
2603
datetime.timedelta(hours=1),
2604
frozenset((token_minute, token_end)))
2605
token_time = Token(re.compile(r"T"),
2606
None,
2607
frozenset((token_hour, token_minute,
2608
token_second)))
2609
token_day = Token(re.compile(r"(\d+)D"),
2610
datetime.timedelta(days=1),
2611
frozenset((token_time, token_end)))
2612
token_month = Token(re.compile(r"(\d+)M"),
2613
datetime.timedelta(weeks=4),
2614
frozenset((token_day, token_end)))
2615
token_year = Token(re.compile(r"(\d+)Y"),
2616
datetime.timedelta(weeks=52),
2617
frozenset((token_month, token_end)))
2618
token_week = Token(re.compile(r"(\d+)W"),
2619
datetime.timedelta(weeks=1),
2620
frozenset((token_end, )))
2621
token_duration = Token(re.compile(r"P"), None,
2622
frozenset((token_year, token_month,
2623
token_day, token_time,
2624
token_week)))
2625
# Define starting values
2626
value = datetime.timedelta() # Value so far
2627
found_token = None
2628
followers = frozenset((token_duration, )) # Following valid tokens
2629
s = duration # String left to parse
2630
# Loop until end token is found
2631
while found_token is not token_end:
2632
# Search for any currently valid tokens
2633
for token in followers:
2634
match = token.regexp.match(s)
2635
if match is not None:
2636
# Token found
2637
if token.value is not None:
2638
# Value found, parse digits
2639
factor = int(match.group(1), 10)
2640
# Add to value so far
2641
value += factor * token.value
2642
# Strip token from string
2643
s = token.regexp.sub("", s, 1)
2644
# Go to found token
2645
found_token = token
2646
# Set valid next tokens
2647
followers = found_token.followers
2648
break
2649
else:
2650
# No currently valid tokens were found
2651
raise ValueError("Invalid RFC 3339 duration: {!r}"
2652
.format(duration))
2653
# End token found
2654
return value
2655
2656
2657
1583
def string_to_delta(interval):
2658
1584
"""Parse a string and return a datetime.timedelta
2659
1585
2670
1596
>>> string_to_delta('5m 30s')
2671
1597
datetime.timedelta(0, 330)
2672
1598
"""
2673
2674
try:
2675
return rfc3339_duration_to_delta(interval)
2676
except ValueError:
2677
pass
2678
2679
1599
timevalue = datetime.timedelta(0)
2680
1600
for s in interval.split():
2681
1601
try:
2682
suffix = s[-1]
1602
suffix = unicode(s[-1])
2683
1603
value = int(s[:-1])
2684
1604
if suffix == "d":
2685
1605
delta = datetime.timedelta(value)
2692
1612
elif suffix == "w":
2693
1613
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2694
1614
else:
2695
raise ValueError("Unknown suffix {!r}".format(suffix))
2696
except IndexError as e:
1615
raise ValueError("Unknown suffix %r" % suffix)
1616
except (ValueError, IndexError), e:
2697
1617
raise ValueError(*(e.args))
2698
1618
timevalue += delta
2699
1619
return timevalue
2700
1620
2701
1621
1622
def if_nametoindex(interface):
1623
"""Call the C function if_nametoindex(), or equivalent
1624
1625
Note: This function cannot accept a unicode string."""
1626
global if_nametoindex
1627
try:
1628
if_nametoindex = (ctypes.cdll.LoadLibrary
1629
(ctypes.util.find_library("c"))
1630
.if_nametoindex)
1631
except (OSError, AttributeError):
1632
logger.warning("Doing if_nametoindex the hard way")
1633
def if_nametoindex(interface):
1634
"Get an interface index the hard way, i.e. using fcntl()"
1635
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1636
with contextlib.closing(socket.socket()) as s:
1637
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1638
struct.pack(str("16s16x"),
1639
interface))
1640
interface_index = struct.unpack(str("I"),
1641
ifreq[16:20])[0]
1642
return interface_index
1643
return if_nametoindex(interface)
1644
1645
2702
1646
def daemon(nochdir = False, noclose = False):
2703
1647
"""See daemon(3). Standard BSD Unix function.
2704
1648
2712
1656
sys.exit()
2713
1657
if not noclose:
2714
1658
# Close all standard open file descriptors
2715
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1659
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2716
1660
if not stat.S_ISCHR(os.fstat(null).st_mode):
2717
1661
raise OSError(errno.ENODEV,
2718
"{} not a character device"
2719
.format(os.devnull))
1662
"%s not a character device"
1663
% os.path.devnull)
2720
1664
os.dup2(null, sys.stdin.fileno())
2721
1665
os.dup2(null, sys.stdout.fileno())
2722
1666
os.dup2(null, sys.stderr.fileno())
2731
1675
2732
1676
parser = argparse.ArgumentParser()
2733
1677
parser.add_argument("-v", "--version", action="version",
2734
version = "%(prog)s {}".format(version),
1678
version = "%%(prog)s %s" % version,
2735
1679
help="show version number and exit")
2736
1680
parser.add_argument("-i", "--interface", metavar="IF",
2737
1681
help="Bind to interface IF")
2743
1687
help="Run self-test")
2744
1688
parser.add_argument("--debug", action="store_true",
2745
1689
help="Debug mode; run in foreground and log"
2746
" to terminal", default=None)
1690
" to terminal")
2747
1691
parser.add_argument("--debuglevel", metavar="LEVEL",
2748
1692
help="Debug level for stdout output")
2749
1693
parser.add_argument("--priority", help="GnuTLS"
2756
1700
" files")
2757
1701
parser.add_argument("--no-dbus", action="store_false",
2758
1702
dest="use_dbus", help="Do not provide D-Bus"
2759
" system bus interface", default=None)
1703
" system bus interface")
2760
1704
parser.add_argument("--no-ipv6", action="store_false",
2761
dest="use_ipv6", help="Do not use IPv6",
2762
default=None)
2763
parser.add_argument("--no-restore", action="store_false",
2764
dest="restore", help="Do not restore stored"
2765
" state", default=None)
2766
parser.add_argument("--socket", type=int,
2767
help="Specify a file descriptor to a network"
2768
" socket to use instead of creating one")
2769
parser.add_argument("--statedir", metavar="DIR",
2770
help="Directory to save/restore state in")
2771
parser.add_argument("--foreground", action="store_true",
2772
help="Run in foreground", default=None)
2773
parser.add_argument("--no-zeroconf", action="store_false",
2774
dest="zeroconf", help="Do not use Zeroconf",
2775
default=None)
2776
1705
dest="use_ipv6", help="Do not use IPv6")
2777
1706
options = parser.parse_args()
2778
1707
2779
1708
if options.check:
2780
1709
import doctest
2781
fail_count, test_count = doctest.testmod()
2782
sys.exit(os.EX_OK if fail_count == 0 else 1)
1710
doctest.testmod()
1711
sys.exit()
2783
1712
2784
1713
# Default values for config file for server-global settings
2785
1714
server_defaults = { "interface": "",
2787
1716
"port": "",
2788
1717
"debug": "False",
2789
1718
"priority":
2790
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2791
":+SIGN-DSA-SHA256",
1719
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2792
1720
"servicename": "Mandos",
2793
1721
"use_dbus": "True",
2794
1722
"use_ipv6": "True",
2795
1723
"debuglevel": "",
2796
"restore": "True",
2797
"socket": "",
2798
"statedir": "/var/lib/mandos",
2799
"foreground": "False",
2800
"zeroconf": "True",
2801
}
1724
}
2802
1725
2803
1726
# Parse config file for server-global settings
2804
1727
server_config = configparser.SafeConfigParser(server_defaults)
2805
1728
del server_defaults
2806
server_config.read(os.path.join(options.configdir, "mandos.conf"))
1729
server_config.read(os.path.join(options.configdir,
1730
"mandos.conf"))
2807
1731
# Convert the SafeConfigParser object to a dict
2808
1732
server_settings = server_config.defaults()
2809
1733
# Use the appropriate methods on the non-string config options
2810
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
1734
for option in ("debug", "use_dbus", "use_ipv6"):
2811
1735
server_settings[option] = server_config.getboolean("DEFAULT",
2812
1736
option)
2813
1737
if server_settings["port"]:
2814
1738
server_settings["port"] = server_config.getint("DEFAULT",
2815
1739
"port")
2816
if server_settings["socket"]:
2817
server_settings["socket"] = server_config.getint("DEFAULT",
2818
"socket")
2819
# Later, stdin will, and stdout and stderr might, be dup'ed
2820
# over with an opened os.devnull. But we don't want this to
2821
# happen with a supplied network socket.
2822
if 0 <= server_settings["socket"] <= 2:
2823
server_settings["socket"] = os.dup(server_settings
2824
["socket"])
2825
1740
del server_config
2826
1741
2827
1742
# Override the settings from the config file with command line
2828
1743
# options, if set.
2829
1744
for option in ("interface", "address", "port", "debug",
2830
"priority", "servicename", "configdir", "use_dbus",
2831
"use_ipv6", "debuglevel", "restore", "statedir",
2832
"socket", "foreground", "zeroconf"):
1745
"priority", "servicename", "configdir",
1746
"use_dbus", "use_ipv6", "debuglevel"):
2833
1747
value = getattr(options, option)
2834
1748
if value is not None:
2835
1749
server_settings[option] = value
2836
1750
del options
2837
1751
# Force all strings to be unicode
2838
1752
for option in server_settings.keys():
2839
if isinstance(server_settings[option], bytes):
2840
server_settings[option] = (server_settings[option]
2841
.decode("utf-8"))
2842
# Force all boolean options to be boolean
2843
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2844
"foreground", "zeroconf"):
2845
server_settings[option] = bool(server_settings[option])
2846
# Debug implies foreground
2847
if server_settings["debug"]:
2848
server_settings["foreground"] = True
1753
if type(server_settings[option]) is str:
1754
server_settings[option] = unicode(server_settings[option])
2849
1755
# Now we have our good server settings in "server_settings"
2850
1756
2851
1757
##################################################################
2852
1758
2853
if (not server_settings["zeroconf"]
2854
and not (server_settings["port"]
2855
or server_settings["socket"] != "")):
2856
parser.error("Needs port or socket to work without Zeroconf")
2857
2858
1759
# For convenience
2859
1760
debug = server_settings["debug"]
2860
1761
debuglevel = server_settings["debuglevel"]
2861
1762
use_dbus = server_settings["use_dbus"]
2862
1763
use_ipv6 = server_settings["use_ipv6"]
2863
stored_state_path = os.path.join(server_settings["statedir"],
2864
stored_state_file)
2865
foreground = server_settings["foreground"]
2866
zeroconf = server_settings["zeroconf"]
2867
2868
if debug:
2869
initlogger(debug, logging.DEBUG)
2870
else:
2871
if not debuglevel:
2872
initlogger(debug)
2873
else:
2874
level = getattr(logging, debuglevel.upper())
2875
initlogger(debug, level)
2876
1764
2877
1765
if server_settings["servicename"] != "Mandos":
2878
syslogger.setFormatter(
2879
logging.Formatter('Mandos ({}) [%(process)d]:'
2880
' %(levelname)s: %(message)s'.format(
2881
server_settings["servicename"])))
1766
syslogger.setFormatter(logging.Formatter
1767
('Mandos (%s) [%%(process)d]:'
1768
' %%(levelname)s: %%(message)s'
1769
% server_settings["servicename"]))
2882
1770
2883
1771
# Parse config file with clients
2884
client_config = configparser.SafeConfigParser(Client
2885
.client_defaults)
1772
client_defaults = { "timeout": "1h",
1773
"interval": "5m",
1774
"checker": "fping -q -- %%(host)s",
1775
"host": "",
1776
"approval_delay": "0s",
1777
"approval_duration": "1s",
1778
}
1779
client_config = configparser.SafeConfigParser(client_defaults)
2886
1780
client_config.read(os.path.join(server_settings["configdir"],
2887
1781
"clients.conf"))
2888
1782
2889
1783
global mandos_dbus_service
2890
1784
mandos_dbus_service = None
2891
1785
2892
socketfd = None
2893
if server_settings["socket"] != "":
2894
socketfd = server_settings["socket"]
2895
tcp_server = MandosServer(
2896
(server_settings["address"], server_settings["port"]),
2897
ClientHandler,
2898
interface=(server_settings["interface"] or None),
2899
use_ipv6=use_ipv6,
2900
gnutls_priority=server_settings["priority"],
2901
use_dbus=use_dbus,
2902
socketfd=socketfd)
2903
if not foreground:
2904
pidfilename = "/run/mandos.pid"
2905
if not os.path.isdir("/run/."):
2906
pidfilename = "/var/run/mandos.pid"
2907
pidfile = None
1786
tcp_server = MandosServer((server_settings["address"],
1787
server_settings["port"]),
1788
ClientHandler,
1789
interface=(server_settings["interface"]
1790
or None),
1791
use_ipv6=use_ipv6,
1792
gnutls_priority=
1793
server_settings["priority"],
1794
use_dbus=use_dbus)
1795
if not debug:
1796
pidfilename = "/var/run/mandos.pid"
2908
1797
try:
2909
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2910
except IOError as e:
2911
logger.error("Could not open file %r", pidfilename,
2912
exc_info=e)
1798
pidfile = open(pidfilename, "w")
1799
except IOError:
1800
logger.error("Could not open file %r", pidfilename)
2913
1801
2914
for name in ("_mandos", "mandos", "nobody"):
1802
try:
1803
uid = pwd.getpwnam("_mandos").pw_uid
1804
gid = pwd.getpwnam("_mandos").pw_gid
1805
except KeyError:
2915
1806
try:
2916
uid = pwd.getpwnam(name).pw_uid
2917
gid = pwd.getpwnam(name).pw_gid
2918
break
1807
uid = pwd.getpwnam("mandos").pw_uid
1808
gid = pwd.getpwnam("mandos").pw_gid
2919
1809
except KeyError:
2920
continue
2921
else:
2922
uid = 65534
2923
gid = 65534
1810
try:
1811
uid = pwd.getpwnam("nobody").pw_uid
1812
gid = pwd.getpwnam("nobody").pw_gid
1813
except KeyError:
1814
uid = 65534
1815
gid = 65534
2924
1816
try:
2925
1817
os.setgid(gid)
2926
1818
os.setuid(uid)
2927
except OSError as error:
2928
if error.errno != errno.EPERM:
2929
raise
1819
except OSError, error:
1820
if error[0] != errno.EPERM:
1821
raise error
2930
1822
1823
if not debug and not debuglevel:
1824
syslogger.setLevel(logging.WARNING)
1825
console.setLevel(logging.WARNING)
1826
if debuglevel:
1827
level = getattr(logging, debuglevel.upper())
1828
syslogger.setLevel(level)
1829
console.setLevel(level)
1830
2931
1831
if debug:
2932
1832
# Enable all possible GnuTLS debugging
2933
1833
2934
1834
# "Use a log level over 10 to enable all debugging options."
2935
1835
# - GnuTLS manual
2936
gnutls.global_set_log_level(11)
1836
gnutls.library.functions.gnutls_global_set_log_level(11)
2937
1837
2938
@gnutls.log_func
1838
@gnutls.library.types.gnutls_log_func
2939
1839
def debug_gnutls(level, string):
2940
1840
logger.debug("GnuTLS: %s", string[:-1])
2941
1841
2942
gnutls.global_set_log_function(debug_gnutls)
1842
(gnutls.library.functions
1843
.gnutls_global_set_log_function(debug_gnutls))
2943
1844
2944
1845
# Redirect stdin so all checkers get /dev/null
2945
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1846
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2946
1847
os.dup2(null, sys.stdin.fileno())
2947
1848
if null > 2:
2948
1849
os.close(null)
1850
else:
1851
# No console logging
1852
logger.removeHandler(console)
2949
1853
2950
1854
# Need to fork before connecting to D-Bus
2951
if not foreground:
1855
if not debug:
2952
1856
# Close all input and output, do double fork, etc.
2953
1857
daemon()
2954
1858
2955
# multiprocessing will use threads, so before we use gobject we
2956
# need to inform gobject that threads will be used.
2957
gobject.threads_init()
2958
2959
1859
global main_loop
2960
1860
# From the Avahi example code
2961
DBusGMainLoop(set_as_default=True)
1861
DBusGMainLoop(set_as_default=True )
2962
1862
main_loop = gobject.MainLoop()
2963
1863
bus = dbus.SystemBus()
2964
1864
# End of Avahi example code
2965
1865
if use_dbus:
2966
1866
try:
2967
bus_name = dbus.service.BusName("se.recompile.Mandos",
2968
bus,
2969
do_not_queue=True)
2970
old_bus_name = dbus.service.BusName(
2971
"se.bsnet.fukt.Mandos", bus,
2972
do_not_queue=True)
2973
except dbus.exceptions.DBusException as e:
2974
logger.error("Disabling D-Bus:", exc_info=e)
1867
bus_name = dbus.service.BusName("se.bsnet.fukt.Mandos",
1868
bus, do_not_queue=True)
1869
except dbus.exceptions.NameExistsException, e:
1870
logger.error(unicode(e) + ", disabling D-Bus")
2975
1871
use_dbus = False
2976
1872
server_settings["use_dbus"] = False
2977
1873
tcp_server.use_dbus = False
2978
if zeroconf:
2979
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2980
service = AvahiServiceToSyslog(
2981
name = server_settings["servicename"],
2982
servicetype = "_mandos._tcp",
2983
protocol = protocol,
2984
bus = bus)
2985
if server_settings["interface"]:
2986
service.interface = if_nametoindex(
2987
server_settings["interface"].encode("utf-8"))
1874
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1875
service = AvahiService(name = server_settings["servicename"],
1876
servicetype = "_mandos._tcp",
1877
protocol = protocol, bus = bus)
1878
if server_settings["interface"]:
1879
service.interface = (if_nametoindex
1880
(str(server_settings["interface"])))
2988
1881
2989
1882
global multiprocessing_manager
2990
1883
multiprocessing_manager = multiprocessing.Manager()
2992
1885
client_class = Client
2993
1886
if use_dbus:
2994
1887
client_class = functools.partial(ClientDBus, bus = bus)
2995
2996
client_settings = Client.config_parser(client_config)
2997
old_client_settings = {}
2998
clients_data = {}
2999
3000
# This is used to redirect stdout and stderr for checker processes
3001
global wnull
3002
wnull = open(os.devnull, "w") # A writable /dev/null
3003
# Only used if server is running in foreground but not in debug
3004
# mode
3005
if debug or not foreground:
3006
wnull.close()
3007
3008
# Get client data and settings from last running state.
3009
if server_settings["restore"]:
3010
try:
3011
with open(stored_state_path, "rb") as stored_state:
3012
clients_data, old_client_settings = pickle.load(
3013
stored_state)
3014
os.remove(stored_state_path)
3015
except IOError as e:
3016
if e.errno == errno.ENOENT:
3017
logger.warning("Could not load persistent state:"
3018
" {}".format(os.strerror(e.errno)))
3019
else:
3020
logger.critical("Could not load persistent state:",
3021
exc_info=e)
3022
raise
3023
except EOFError as e:
3024
logger.warning("Could not load persistent state: "
3025
"EOFError:",
3026
exc_info=e)
3027
3028
with PGPEngine() as pgp:
3029
for client_name, client in clients_data.items():
3030
# Skip removed clients
3031
if client_name not in client_settings:
3032
continue
3033
3034
# Decide which value to use after restoring saved state.
3035
# We have three different values: Old config file,
3036
# new config file, and saved state.
3037
# New config value takes precedence if it differs from old
3038
# config value, otherwise use saved state.
3039
for name, value in client_settings[client_name].items():
3040
try:
3041
# For each value in new config, check if it
3042
# differs from the old config value (Except for
3043
# the "secret" attribute)
3044
if (name != "secret"
3045
and (value !=
3046
old_client_settings[client_name][name])):
3047
client[name] = value
3048
except KeyError:
3049
pass
3050
3051
# Clients who has passed its expire date can still be
3052
# enabled if its last checker was successful. A Client
3053
# whose checker succeeded before we stored its state is
3054
# assumed to have successfully run all checkers during
3055
# downtime.
3056
if client["enabled"]:
3057
if datetime.datetime.utcnow() >= client["expires"]:
3058
if not client["last_checked_ok"]:
3059
logger.warning(
3060
"disabling client {} - Client never "
3061
"performed a successful checker".format(
3062
client_name))
3063
client["enabled"] = False
3064
elif client["last_checker_status"] != 0:
3065
logger.warning(
3066
"disabling client {} - Client last"
3067
" checker failed with error code"
3068
" {}".format(
3069
client_name,
3070
client["last_checker_status"]))
3071
client["enabled"] = False
3072
else:
3073
client["expires"] = (
3074
datetime.datetime.utcnow()
3075
+ client["timeout"])
3076
logger.debug("Last checker succeeded,"
3077
" keeping {} enabled".format(
3078
client_name))
1888
def client_config_items(config, section):
1889
special_settings = {
1890
"approved_by_default":
1891
lambda: config.getboolean(section,
1892
"approved_by_default"),
1893
}
1894
for name, value in config.items(section):
3079
1895
try:
3080
client["secret"] = pgp.decrypt(
3081
client["encrypted_secret"],
3082
client_settings[client_name]["secret"])
3083
except PGPError:
3084
# If decryption fails, we use secret from new settings
3085
logger.debug("Failed to decrypt {} old secret".format(
3086
client_name))
3087
client["secret"] = (client_settings[client_name]
3088
["secret"])
3089
3090
# Add/remove clients based on new changes made to config
3091
for client_name in (set(old_client_settings)
3092
- set(client_settings)):
3093
del clients_data[client_name]
3094
for client_name in (set(client_settings)
3095
- set(old_client_settings)):
3096
clients_data[client_name] = client_settings[client_name]
3097
3098
# Create all client objects
3099
for client_name, client in clients_data.items():
3100
tcp_server.clients[client_name] = client_class(
3101
name = client_name,
3102
settings = client,
3103
server_settings = server_settings)
3104
1896
yield (name, special_settings[name]())
1897
except KeyError:
1898
yield (name, value)
1899
1900
tcp_server.clients.update(set(
1901
client_class(name = section,
1902
config= dict(client_config_items(
1903
client_config, section)))
1904
for section in client_config.sections()))
3105
1905
if not tcp_server.clients:
3106
1906
logger.warning("No clients defined")
3107
3108
if not foreground:
3109
if pidfile is not None:
3110
pid = os.getpid()
3111
try:
3112
with pidfile:
3113
print(pid, file=pidfile)
3114
except IOError:
3115
logger.error("Could not write to file %r with PID %d",
3116
pidfilename, pid)
3117
del pidfile
1907
1908
if not debug:
1909
try:
1910
with pidfile:
1911
pid = os.getpid()
1912
pidfile.write(str(pid) + "\n".encode("utf-8"))
1913
del pidfile
1914
except IOError:
1915
logger.error("Could not write to file %r with PID %d",
1916
pidfilename, pid)
1917
except NameError:
1918
# "pidfile" was never created
1919
pass
3118
1920
del pidfilename
3119
1921
1922
signal.signal(signal.SIGINT, signal.SIG_IGN)
1923
3120
1924
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
3121
1925
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
3122
1926
3123
1927
if use_dbus:
3124
3125
@alternate_dbus_interfaces(
3126
{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
3127
class MandosDBusService(DBusObjectWithObjectManager):
1928
class MandosDBusService(dbus.service.Object):
3128
1929
"""A D-Bus proxy object"""
3129
3130
1930
def __init__(self):
3131
1931
dbus.service.Object.__init__(self, bus, "/")
3132
3133
_interface = "se.recompile.Mandos"
1932
_interface = "se.bsnet.fukt.Mandos"
3134
1933
3135
1934
@dbus.service.signal(_interface, signature="o")
3136
1935
def ClientAdded(self, objpath):
3142
1941
"D-Bus signal"
3143
1942
pass
3144
1943
3145
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3146
"true"})
3147
1944
@dbus.service.signal(_interface, signature="os")
3148
1945
def ClientRemoved(self, objpath, name):
3149
1946
"D-Bus signal"
3150
1947
pass
3151
1948
3152
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3153
"true"})
3154
1949
@dbus.service.method(_interface, out_signature="ao")
3155
1950
def GetAllClients(self):
3156
1951
"D-Bus method"
3157
return dbus.Array(c.dbus_object_path for c in
3158
tcp_server.clients.itervalues())
1952
return dbus.Array(c.dbus_object_path
1953
for c in tcp_server.clients)
3159
1954
3160
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3161
"true"})
3162
1955
@dbus.service.method(_interface,
3163
1956
out_signature="a{oa{sv}}")
3164
1957
def GetAllClientsWithProperties(self):
3165
1958
"D-Bus method"
3166
1959
return dbus.Dictionary(
3167
{ c.dbus_object_path: c.GetAll(
3168
"se.recompile.Mandos.Client")
3169
for c in tcp_server.clients.itervalues() },
1960
((c.dbus_object_path, c.GetAll(""))
1961
for c in tcp_server.clients),
3170
1962
signature="oa{sv}")
3171
1963
3172
1964
@dbus.service.method(_interface, in_signature="o")
3173
1965
def RemoveClient(self, object_path):
3174
1966
"D-Bus method"
3175
for c in tcp_server.clients.itervalues():
1967
for c in tcp_server.clients:
3176
1968
if c.dbus_object_path == object_path:
3177
del tcp_server.clients[c.name]
1969
tcp_server.clients.remove(c)
3178
1970
c.remove_from_connection()
3179
# Don't signal the disabling
1971
# Don't signal anything except ClientRemoved
3180
1972
c.disable(quiet=True)
3181
# Emit D-Bus signal for removal
3182
self.client_removed_signal(c)
1973
# Emit D-Bus signal
1974
self.ClientRemoved(object_path, c.name)
3183
1975
return
3184
1976
raise KeyError(object_path)
3185
1977
3186
1978
del _interface
3187
3188
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3189
out_signature = "a{oa{sa{sv}}}")
3190
def GetManagedObjects(self):
3191
"""D-Bus method"""
3192
return dbus.Dictionary(
3193
{ client.dbus_object_path:
3194
dbus.Dictionary(
3195
{ interface: client.GetAll(interface)
3196
for interface in
3197
client._get_all_interface_names()})
3198
for client in tcp_server.clients.values()})
3199
3200
def client_added_signal(self, client):
3201
"""Send the new standard signal and the old signal"""
3202
if use_dbus:
3203
# New standard signal
3204
self.InterfacesAdded(
3205
client.dbus_object_path,
3206
dbus.Dictionary(
3207
{ interface: client.GetAll(interface)
3208
for interface in
3209
client._get_all_interface_names()}))
3210
# Old signal
3211
self.ClientAdded(client.dbus_object_path)
3212
3213
def client_removed_signal(self, client):
3214
"""Send the new standard signal and the old signal"""
3215
if use_dbus:
3216
# New standard signal
3217
self.InterfacesRemoved(
3218
client.dbus_object_path,
3219
client._get_all_interface_names())
3220
# Old signal
3221
self.ClientRemoved(client.dbus_object_path,
3222
client.name)
3223
1979
3224
1980
mandos_dbus_service = MandosDBusService()
3225
1981
3226
1982
def cleanup():
3227
1983
"Cleanup function; run on exit"
3228
if zeroconf:
3229
service.cleanup()
3230
3231
multiprocessing.active_children()
3232
wnull.close()
3233
if not (tcp_server.clients or client_settings):
3234
return
3235
3236
# Store client before exiting. Secrets are encrypted with key
3237
# based on what config file has. If config file is
3238
# removed/edited, old secret will thus be unrecovable.
3239
clients = {}
3240
with PGPEngine() as pgp:
3241
for client in tcp_server.clients.itervalues():
3242
key = client_settings[client.name]["secret"]
3243
client.encrypted_secret = pgp.encrypt(client.secret,
3244
key)
3245
client_dict = {}
3246
3247
# A list of attributes that can not be pickled
3248
# + secret.
3249
exclude = { "bus", "changedstate", "secret",
3250
"checker", "server_settings" }
3251
for name, typ in inspect.getmembers(dbus.service
3252
.Object):
3253
exclude.add(name)
3254
3255
client_dict["encrypted_secret"] = (client
3256
.encrypted_secret)
3257
for attr in client.client_structure:
3258
if attr not in exclude:
3259
client_dict[attr] = getattr(client, attr)
3260
3261
clients[client.name] = client_dict
3262
del client_settings[client.name]["secret"]
3263
3264
try:
3265
with tempfile.NamedTemporaryFile(
3266
mode='wb',
3267
suffix=".pickle",
3268
prefix='clients-',
3269
dir=os.path.dirname(stored_state_path),
3270
delete=False) as stored_state:
3271
pickle.dump((clients, client_settings), stored_state)
3272
tempname = stored_state.name
3273
os.rename(tempname, stored_state_path)
3274
except (IOError, OSError) as e:
3275
if not debug:
3276
try:
3277
os.remove(tempname)
3278
except NameError:
3279
pass
3280
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3281
logger.warning("Could not save persistent state: {}"
3282
.format(os.strerror(e.errno)))
3283
else:
3284
logger.warning("Could not save persistent state:",
3285
exc_info=e)
3286
raise
3287
3288
# Delete all clients, and settings from config
1984
service.cleanup()
1985
3289
1986
while tcp_server.clients:
3290
name, client = tcp_server.clients.popitem()
1987
client = tcp_server.clients.pop()
3291
1988
if use_dbus:
3292
1989
client.remove_from_connection()
3293
# Don't signal the disabling
1990
client.disable_hook = None
1991
# Don't signal anything except ClientRemoved
3294
1992
client.disable(quiet=True)
3295
# Emit D-Bus signal for removal
3296
1993
if use_dbus:
3297
mandos_dbus_service.client_removed_signal(client)
3298
client_settings.clear()
1994
# Emit D-Bus signal
1995
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
1996
client.name)
3299
1997
3300
1998
atexit.register(cleanup)
3301
1999
3302
for client in tcp_server.clients.itervalues():
2000
for client in tcp_server.clients:
3303
2001
if use_dbus:
3304
# Emit D-Bus signal for adding
3305
mandos_dbus_service.client_added_signal(client)
3306
# Need to initiate checking of clients
3307
if client.enabled:
3308
client.init_checker()
2002
# Emit D-Bus signal
2003
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2004
client.enable()
3309
2005
3310
2006
tcp_server.enable()
3311
2007
tcp_server.server_activate()
3312
2008
3313
2009
# Find out what port we got
3314
if zeroconf:
3315
service.port = tcp_server.socket.getsockname()[1]
2010
service.port = tcp_server.socket.getsockname()[1]
3316
2011
if use_ipv6:
3317
2012
logger.info("Now listening on address %r, port %d,"
3318
" flowinfo %d, scope_id %d",
3319
*tcp_server.socket.getsockname())
2013
" flowinfo %d, scope_id %d"
2014
% tcp_server.socket.getsockname())
3320
2015
else: # IPv4
3321
logger.info("Now listening on address %r, port %d",
3322
*tcp_server.socket.getsockname())
2016
logger.info("Now listening on address %r, port %d"
2017
% tcp_server.socket.getsockname())
3323
2018
3324
2019
#service.interface = tcp_server.socket.getsockname()[3]
3325
2020
3326
2021
try:
3327
if zeroconf:
3328
# From the Avahi example code
3329
try:
3330
service.activate()
3331
except dbus.exceptions.DBusException as error:
3332
logger.critical("D-Bus Exception", exc_info=error)
3333
cleanup()
3334
sys.exit(1)
3335
# End of Avahi example code
2022
# From the Avahi example code
2023
try:
2024
service.activate()
2025
except dbus.exceptions.DBusException, error:
2026
logger.critical("DBusException: %s", error)
2027
cleanup()
2028
sys.exit(1)
2029
# End of Avahi example code
3336
2030
3337
2031
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
3338
2032
lambda *args, **kwargs:
3341
2035
3342
2036
logger.debug("Starting main loop")
3343
2037
main_loop.run()
3344
except AvahiError as error:
3345
logger.critical("Avahi Error", exc_info=error)
2038
except AvahiError, error:
2039
logger.critical("AvahiError: %s", error)
3346
2040
cleanup()
3347
2041
sys.exit(1)
3348
2042
except KeyboardInterrupt:
3353
2047
# Must run before the D-Bus bus name gets deregistered
3354
2048
cleanup()
3355
2049
3356
3357
2050
if __name__ == '__main__':
3358
2051
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0