To get this branch, use:
bzr branch
http://bzr.recompile.se/loggerhead/mandos/trunk
« back to all changes in this revision
Viewing changes to mandos
- browse files at revision 885
- compare with another revision
- download diff
- download tarball
- view history from revision 885
- Committer: Teddy Hogeborn
- Date: 2016-10-29 14:22:26 UTC
- Revision ID: teddy@recompile.se-20161029142226-n4s9d70tuk615pg1
Makefile: Clarify message when running client.
* Makefile (run-client): Clarify message.
* Makefile (run-client): Clarify message.
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.
5
#
5
#
6
6
# This program is partly derived from an example program for an Avahi
7
7
# service publisher, downloaded from
8
8
# <http://avahi.org/wiki/PythonPublishExample>. This includes the
9
9
# methods "add", "remove", "server_state_changed",
10
10
# "entry_group_state_changed", "cleanup", and "activate" in the
11
11
# "AvahiService" class, and some lines in "main".
12
#
12
#
13
13
# Everything else is
14
# Copyright © 2008-2014 Teddy Hogeborn
15
# Copyright © 2008-2014 Björn Påhlsson
16
#
14
# Copyright © 2008-2016 Teddy Hogeborn
15
# Copyright © 2008-2016 Björn Påhlsson
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
19
19
# the Free Software Foundation, either version 3 of the License, or
23
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
24
24
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25
25
# GNU General Public License for more details.
26
#
26
#
27
27
# You should have received a copy of the GNU General Public License
28
28
# along with this program. If not, see
29
29
# <http://www.gnu.org/licenses/>.
30
#
30
#
31
31
# Contact the authors at <mandos@recompile.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 *
37
try:
38
from future_builtins import *
39
except ImportError:
40
pass
38
41
39
import SocketServer as socketserver
42
try:
43
import SocketServer as socketserver
44
except ImportError:
45
import socketserver
40
46
import socket
41
47
import argparse
42
48
import datetime
43
49
import errno
44
import gnutls.crypto
45
import gnutls.connection
46
import gnutls.errors
47
import gnutls.library.functions
48
import gnutls.library.constants
49
import gnutls.library.types
50
import ConfigParser as configparser
50
try:
51
import ConfigParser as configparser
52
except ImportError:
53
import configparser
51
54
import sys
52
55
import re
53
56
import os
62
65
import struct
63
66
import fcntl
64
67
import functools
65
import cPickle as pickle
68
try:
69
import cPickle as pickle
70
except ImportError:
71
import pickle
66
72
import multiprocessing
67
73
import types
68
74
import binascii
69
75
import tempfile
70
76
import itertools
71
77
import collections
78
import codecs
72
79
73
80
import dbus
74
81
import dbus.service
75
import gobject
76
import avahi
82
from gi.repository import GLib
77
83
from dbus.mainloop.glib import DBusGMainLoop
78
84
import ctypes
79
85
import ctypes.util
80
86
import xml.dom.minidom
81
87
import inspect
82
88
89
# Try to find the value of SO_BINDTODEVICE:
83
90
try:
91
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
92
# newer, and it is also the most natural place for it:
84
93
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
85
94
except AttributeError:
86
95
try:
96
# This is where SO_BINDTODEVICE was up to and including Python
97
# 2.6, and also 3.2:
87
98
from IN import SO_BINDTODEVICE
88
99
except ImportError:
89
SO_BINDTODEVICE = None
100
# In Python 2.7 it seems to have been removed entirely.
101
# Try running the C preprocessor:
102
try:
103
cc = subprocess.Popen(["cc", "--language=c", "-E",
104
"/dev/stdin"],
105
stdin=subprocess.PIPE,
106
stdout=subprocess.PIPE)
107
stdout = cc.communicate(
108
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
109
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
110
except (OSError, ValueError, IndexError):
111
# No value found
112
SO_BINDTODEVICE = None
90
113
91
114
if sys.version_info.major == 2:
92
115
str = unicode
93
116
94
version = "1.6.8"
117
version = "1.7.13"
95
118
stored_state_file = "clients.pickle"
96
119
97
120
logger = logging.getLogger()
98
121
syslogger = None
99
122
100
123
try:
101
if_nametoindex = (ctypes.cdll.LoadLibrary
102
(ctypes.util.find_library("c"))
103
.if_nametoindex)
124
if_nametoindex = ctypes.cdll.LoadLibrary(
125
ctypes.util.find_library("c")).if_nametoindex
104
126
except (OSError, AttributeError):
127
105
128
def if_nametoindex(interface):
106
129
"Get an interface index the hard way, i.e. using fcntl()"
107
130
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
112
135
return interface_index
113
136
114
137
138
def copy_function(func):
139
"""Make a copy of a function"""
140
if sys.version_info.major == 2:
141
return types.FunctionType(func.func_code,
142
func.func_globals,
143
func.func_name,
144
func.func_defaults,
145
func.func_closure)
146
else:
147
return types.FunctionType(func.__code__,
148
func.__globals__,
149
func.__name__,
150
func.__defaults__,
151
func.__closure__)
152
153
115
154
def initlogger(debug, level=logging.WARNING):
116
155
"""init logger and add loglevel"""
117
156
118
157
global syslogger
119
syslogger = (logging.handlers.SysLogHandler
120
(facility =
121
logging.handlers.SysLogHandler.LOG_DAEMON,
122
address = "/dev/log"))
158
syslogger = (logging.handlers.SysLogHandler(
159
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
160
address="/dev/log"))
123
161
syslogger.setFormatter(logging.Formatter
124
162
('Mandos [%(process)d]: %(levelname)s:'
125
163
' %(message)s'))
126
164
logger.addHandler(syslogger)
127
165
128
166
if debug:
129
167
console = logging.StreamHandler()
130
168
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
142
180
143
181
class PGPEngine(object):
144
182
"""A simple class for OpenPGP symmetric encryption & decryption"""
183
145
184
def __init__(self):
146
185
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
186
self.gpg = "gpg"
187
try:
188
output = subprocess.check_output(["gpgconf"])
189
for line in output.splitlines():
190
name, text, path = line.split(b":")
191
if name == "gpg":
192
self.gpg = path
193
break
194
except OSError as e:
195
if e.errno != errno.ENOENT:
196
raise
147
197
self.gnupgargs = ['--batch',
148
'--home', self.tempdir,
198
'--homedir', self.tempdir,
149
199
'--force-mdc',
150
'--quiet',
151
'--no-use-agent']
152
200
'--quiet']
201
# Only GPG version 1 has the --no-use-agent option.
202
if self.gpg == "gpg" or self.gpg.endswith("/gpg"):
203
self.gnupgargs.append("--no-use-agent")
204
153
205
def __enter__(self):
154
206
return self
155
207
156
208
def __exit__(self, exc_type, exc_value, traceback):
157
209
self._cleanup()
158
210
return False
159
211
160
212
def __del__(self):
161
213
self._cleanup()
162
214
163
215
def _cleanup(self):
164
216
if self.tempdir is not None:
165
217
# Delete contents of tempdir
166
218
for root, dirs, files in os.walk(self.tempdir,
167
topdown = False):
219
topdown=False):
168
220
for filename in files:
169
221
os.remove(os.path.join(root, filename))
170
222
for dirname in dirs:
172
224
# Remove tempdir
173
225
os.rmdir(self.tempdir)
174
226
self.tempdir = None
175
227
176
228
def password_encode(self, password):
177
229
# Passphrase can not be empty and can not contain newlines or
178
230
# NUL bytes. So we prefix it and hex encode it.
183
235
.replace(b"\n", b"\\n")
184
236
.replace(b"\0", b"\\x00"))
185
237
return encoded
186
238
187
239
def encrypt(self, data, password):
188
240
passphrase = self.password_encode(password)
189
with tempfile.NamedTemporaryFile(dir=self.tempdir
190
) as passfile:
241
with tempfile.NamedTemporaryFile(
242
dir=self.tempdir) as passfile:
191
243
passfile.write(passphrase)
192
244
passfile.flush()
193
proc = subprocess.Popen(['gpg', '--symmetric',
245
proc = subprocess.Popen([self.gpg, '--symmetric',
194
246
'--passphrase-file',
195
247
passfile.name]
196
248
+ self.gnupgargs,
197
stdin = subprocess.PIPE,
198
stdout = subprocess.PIPE,
199
stderr = subprocess.PIPE)
200
ciphertext, err = proc.communicate(input = data)
249
stdin=subprocess.PIPE,
250
stdout=subprocess.PIPE,
251
stderr=subprocess.PIPE)
252
ciphertext, err = proc.communicate(input=data)
201
253
if proc.returncode != 0:
202
254
raise PGPError(err)
203
255
return ciphertext
204
256
205
257
def decrypt(self, data, password):
206
258
passphrase = self.password_encode(password)
207
with tempfile.NamedTemporaryFile(dir = self.tempdir
208
) as passfile:
259
with tempfile.NamedTemporaryFile(
260
dir=self.tempdir) as passfile:
209
261
passfile.write(passphrase)
210
262
passfile.flush()
211
proc = subprocess.Popen(['gpg', '--decrypt',
263
proc = subprocess.Popen([self.gpg, '--decrypt',
212
264
'--passphrase-file',
213
265
passfile.name]
214
266
+ self.gnupgargs,
215
stdin = subprocess.PIPE,
216
stdout = subprocess.PIPE,
217
stderr = subprocess.PIPE)
218
decrypted_plaintext, err = proc.communicate(input
219
= data)
267
stdin=subprocess.PIPE,
268
stdout=subprocess.PIPE,
269
stderr=subprocess.PIPE)
270
decrypted_plaintext, err = proc.communicate(input=data)
220
271
if proc.returncode != 0:
221
272
raise PGPError(err)
222
273
return decrypted_plaintext
223
274
224
275
276
# Pretend that we have an Avahi module
277
class Avahi(object):
278
"""This isn't so much a class as it is a module-like namespace.
279
It is instantiated once, and simulates having an Avahi module."""
280
IF_UNSPEC = -1 # avahi-common/address.h
281
PROTO_UNSPEC = -1 # avahi-common/address.h
282
PROTO_INET = 0 # avahi-common/address.h
283
PROTO_INET6 = 1 # avahi-common/address.h
284
DBUS_NAME = "org.freedesktop.Avahi"
285
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
286
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
287
DBUS_PATH_SERVER = "/"
288
289
def string_array_to_txt_array(self, t):
290
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
291
for s in t), signature="ay")
292
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
293
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
294
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
295
SERVER_INVALID = 0 # avahi-common/defs.h
296
SERVER_REGISTERING = 1 # avahi-common/defs.h
297
SERVER_RUNNING = 2 # avahi-common/defs.h
298
SERVER_COLLISION = 3 # avahi-common/defs.h
299
SERVER_FAILURE = 4 # avahi-common/defs.h
300
avahi = Avahi()
301
302
225
303
class AvahiError(Exception):
226
304
def __init__(self, value, *args, **kwargs):
227
305
self.value = value
228
306
return super(AvahiError, self).__init__(value, *args,
229
307
**kwargs)
230
308
309
231
310
class AvahiServiceError(AvahiError):
232
311
pass
233
312
313
234
314
class AvahiGroupError(AvahiError):
235
315
pass
236
316
237
317
238
318
class AvahiService(object):
239
319
"""An Avahi (Zeroconf) service.
240
320
241
321
Attributes:
242
322
interface: integer; avahi.IF_UNSPEC or an interface index.
243
323
Used to optionally bind to the specified interface.
255
335
server: D-Bus Server
256
336
bus: dbus.SystemBus()
257
337
"""
258
259
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
260
servicetype = None, port = None, TXT = None,
261
domain = "", host = "", max_renames = 32768,
262
protocol = avahi.PROTO_UNSPEC, bus = None):
338
339
def __init__(self,
340
interface=avahi.IF_UNSPEC,
341
name=None,
342
servicetype=None,
343
port=None,
344
TXT=None,
345
domain="",
346
host="",
347
max_renames=32768,
348
protocol=avahi.PROTO_UNSPEC,
349
bus=None):
263
350
self.interface = interface
264
351
self.name = name
265
352
self.type = servicetype
274
361
self.server = None
275
362
self.bus = bus
276
363
self.entry_group_state_changed_match = None
277
278
def rename(self):
364
365
def rename(self, remove=True):
279
366
"""Derived from the Avahi example code"""
280
367
if self.rename_count >= self.max_renames:
281
368
logger.critical("No suitable Zeroconf service name found"
282
369
" after %i retries, exiting.",
283
370
self.rename_count)
284
371
raise AvahiServiceError("Too many renames")
285
self.name = str(self.server
286
.GetAlternativeServiceName(self.name))
372
self.name = str(
373
self.server.GetAlternativeServiceName(self.name))
374
self.rename_count += 1
287
375
logger.info("Changing Zeroconf service name to %r ...",
288
376
self.name)
289
self.remove()
377
if remove:
378
self.remove()
290
379
try:
291
380
self.add()
292
381
except dbus.exceptions.DBusException as error:
293
logger.critical("D-Bus Exception", exc_info=error)
294
self.cleanup()
295
os._exit(1)
296
self.rename_count += 1
297
382
if (error.get_dbus_name()
383
== "org.freedesktop.Avahi.CollisionError"):
384
logger.info("Local Zeroconf service name collision.")
385
return self.rename(remove=False)
386
else:
387
logger.critical("D-Bus Exception", exc_info=error)
388
self.cleanup()
389
os._exit(1)
390
298
391
def remove(self):
299
392
"""Derived from the Avahi example code"""
300
393
if self.entry_group_state_changed_match is not None:
302
395
self.entry_group_state_changed_match = None
303
396
if self.group is not None:
304
397
self.group.Reset()
305
398
306
399
def add(self):
307
400
"""Derived from the Avahi example code"""
308
401
self.remove()
325
418
dbus.UInt16(self.port),
326
419
avahi.string_array_to_txt_array(self.TXT))
327
420
self.group.Commit()
328
421
329
422
def entry_group_state_changed(self, state, error):
330
423
"""Derived from the Avahi example code"""
331
424
logger.debug("Avahi entry group state change: %i", state)
332
425
333
426
if state == avahi.ENTRY_GROUP_ESTABLISHED:
334
427
logger.debug("Zeroconf service established.")
335
428
elif state == avahi.ENTRY_GROUP_COLLISION:
338
431
elif state == avahi.ENTRY_GROUP_FAILURE:
339
432
logger.critical("Avahi: Error in group state changed %s",
340
433
str(error))
341
raise AvahiGroupError("State changed: {!s}"
342
.format(error))
343
434
raise AvahiGroupError("State changed: {!s}".format(error))
435
344
436
def cleanup(self):
345
437
"""Derived from the Avahi example code"""
346
438
if self.group is not None:
351
443
pass
352
444
self.group = None
353
445
self.remove()
354
446
355
447
def server_state_changed(self, state, error=None):
356
448
"""Derived from the Avahi example code"""
357
449
logger.debug("Avahi server state change: %i", state)
358
bad_states = { avahi.SERVER_INVALID:
359
"Zeroconf server invalid",
360
avahi.SERVER_REGISTERING: None,
361
avahi.SERVER_COLLISION:
362
"Zeroconf server name collision",
363
avahi.SERVER_FAILURE:
364
"Zeroconf server failure" }
450
bad_states = {
451
avahi.SERVER_INVALID: "Zeroconf server invalid",
452
avahi.SERVER_REGISTERING: None,
453
avahi.SERVER_COLLISION: "Zeroconf server name collision",
454
avahi.SERVER_FAILURE: "Zeroconf server failure",
455
}
365
456
if state in bad_states:
366
457
if bad_states[state] is not None:
367
458
if error is None:
370
461
logger.error(bad_states[state] + ": %r", error)
371
462
self.cleanup()
372
463
elif state == avahi.SERVER_RUNNING:
373
self.add()
464
try:
465
self.add()
466
except dbus.exceptions.DBusException as error:
467
if (error.get_dbus_name()
468
== "org.freedesktop.Avahi.CollisionError"):
469
logger.info("Local Zeroconf service name"
470
" collision.")
471
return self.rename(remove=False)
472
else:
473
logger.critical("D-Bus Exception", exc_info=error)
474
self.cleanup()
475
os._exit(1)
374
476
else:
375
477
if error is None:
376
478
logger.debug("Unknown state: %r", state)
377
479
else:
378
480
logger.debug("Unknown state: %r: %r", state, error)
379
481
380
482
def activate(self):
381
483
"""Derived from the Avahi example code"""
382
484
if self.server is None:
386
488
follow_name_owner_changes=True),
387
489
avahi.DBUS_INTERFACE_SERVER)
388
490
self.server.connect_to_signal("StateChanged",
389
self.server_state_changed)
491
self.server_state_changed)
390
492
self.server_state_changed(self.server.GetState())
391
493
392
494
393
495
class AvahiServiceToSyslog(AvahiService):
394
def rename(self):
496
def rename(self, *args, **kwargs):
395
497
"""Add the new name to the syslog messages"""
396
ret = AvahiService.rename(self)
397
syslogger.setFormatter(logging.Formatter
398
('Mandos ({}) [%(process)d]:'
399
' %(levelname)s: %(message)s'
400
.format(self.name)))
498
ret = AvahiService.rename(self, *args, **kwargs)
499
syslogger.setFormatter(logging.Formatter(
500
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
501
.format(self.name)))
401
502
return ret
402
503
403
504
505
# Pretend that we have a GnuTLS module
506
class GnuTLS(object):
507
"""This isn't so much a class as it is a module-like namespace.
508
It is instantiated once, and simulates having a GnuTLS module."""
509
510
library = ctypes.util.find_library("gnutls")
511
if library is None:
512
library = ctypes.util.find_library("gnutls-deb0")
513
_library = ctypes.cdll.LoadLibrary(library)
514
del library
515
_need_version = b"3.3.0"
516
517
def __init__(self):
518
# Need to use "self" here, since this method is called before
519
# the assignment to the "gnutls" global variable happens.
520
if self.check_version(self._need_version) is None:
521
raise self.Error("Needs GnuTLS {} or later"
522
.format(self._need_version))
523
524
# Unless otherwise indicated, the constants and types below are
525
# all from the gnutls/gnutls.h C header file.
526
527
# Constants
528
E_SUCCESS = 0
529
E_INTERRUPTED = -52
530
E_AGAIN = -28
531
CRT_OPENPGP = 2
532
CLIENT = 2
533
SHUT_RDWR = 0
534
CRD_CERTIFICATE = 1
535
E_NO_CERTIFICATE_FOUND = -49
536
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
537
538
# Types
539
class session_int(ctypes.Structure):
540
_fields_ = []
541
session_t = ctypes.POINTER(session_int)
542
543
class certificate_credentials_st(ctypes.Structure):
544
_fields_ = []
545
certificate_credentials_t = ctypes.POINTER(
546
certificate_credentials_st)
547
certificate_type_t = ctypes.c_int
548
549
class datum_t(ctypes.Structure):
550
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
551
('size', ctypes.c_uint)]
552
553
class openpgp_crt_int(ctypes.Structure):
554
_fields_ = []
555
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
556
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
557
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
558
credentials_type_t = ctypes.c_int
559
transport_ptr_t = ctypes.c_void_p
560
close_request_t = ctypes.c_int
561
562
# Exceptions
563
class Error(Exception):
564
# We need to use the class name "GnuTLS" here, since this
565
# exception might be raised from within GnuTLS.__init__,
566
# which is called before the assignment to the "gnutls"
567
# global variable has happened.
568
def __init__(self, message=None, code=None, args=()):
569
# Default usage is by a message string, but if a return
570
# code is passed, convert it to a string with
571
# gnutls.strerror()
572
self.code = code
573
if message is None and code is not None:
574
message = GnuTLS.strerror(code)
575
return super(GnuTLS.Error, self).__init__(
576
message, *args)
577
578
class CertificateSecurityError(Error):
579
pass
580
581
# Classes
582
class Credentials(object):
583
def __init__(self):
584
self._c_object = gnutls.certificate_credentials_t()
585
gnutls.certificate_allocate_credentials(
586
ctypes.byref(self._c_object))
587
self.type = gnutls.CRD_CERTIFICATE
588
589
def __del__(self):
590
gnutls.certificate_free_credentials(self._c_object)
591
592
class ClientSession(object):
593
def __init__(self, socket, credentials=None):
594
self._c_object = gnutls.session_t()
595
gnutls.init(ctypes.byref(self._c_object), gnutls.CLIENT)
596
gnutls.set_default_priority(self._c_object)
597
gnutls.transport_set_ptr(self._c_object, socket.fileno())
598
gnutls.handshake_set_private_extensions(self._c_object,
599
True)
600
self.socket = socket
601
if credentials is None:
602
credentials = gnutls.Credentials()
603
gnutls.credentials_set(self._c_object, credentials.type,
604
ctypes.cast(credentials._c_object,
605
ctypes.c_void_p))
606
self.credentials = credentials
607
608
def __del__(self):
609
gnutls.deinit(self._c_object)
610
611
def handshake(self):
612
return gnutls.handshake(self._c_object)
613
614
def send(self, data):
615
data = bytes(data)
616
data_len = len(data)
617
while data_len > 0:
618
data_len -= gnutls.record_send(self._c_object,
619
data[-data_len:],
620
data_len)
621
622
def bye(self):
623
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
624
625
# Error handling functions
626
def _error_code(result):
627
"""A function to raise exceptions on errors, suitable
628
for the 'restype' attribute on ctypes functions"""
629
if result >= 0:
630
return result
631
if result == gnutls.E_NO_CERTIFICATE_FOUND:
632
raise gnutls.CertificateSecurityError(code=result)
633
raise gnutls.Error(code=result)
634
635
def _retry_on_error(result, func, arguments):
636
"""A function to retry on some errors, suitable
637
for the 'errcheck' attribute on ctypes functions"""
638
while result < 0:
639
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
640
return _error_code(result)
641
result = func(*arguments)
642
return result
643
644
# Unless otherwise indicated, the function declarations below are
645
# all from the gnutls/gnutls.h C header file.
646
647
# Functions
648
priority_set_direct = _library.gnutls_priority_set_direct
649
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
650
ctypes.POINTER(ctypes.c_char_p)]
651
priority_set_direct.restype = _error_code
652
653
init = _library.gnutls_init
654
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
655
init.restype = _error_code
656
657
set_default_priority = _library.gnutls_set_default_priority
658
set_default_priority.argtypes = [session_t]
659
set_default_priority.restype = _error_code
660
661
record_send = _library.gnutls_record_send
662
record_send.argtypes = [session_t, ctypes.c_void_p,
663
ctypes.c_size_t]
664
record_send.restype = ctypes.c_ssize_t
665
record_send.errcheck = _retry_on_error
666
667
certificate_allocate_credentials = (
668
_library.gnutls_certificate_allocate_credentials)
669
certificate_allocate_credentials.argtypes = [
670
ctypes.POINTER(certificate_credentials_t)]
671
certificate_allocate_credentials.restype = _error_code
672
673
certificate_free_credentials = (
674
_library.gnutls_certificate_free_credentials)
675
certificate_free_credentials.argtypes = [
676
certificate_credentials_t]
677
certificate_free_credentials.restype = None
678
679
handshake_set_private_extensions = (
680
_library.gnutls_handshake_set_private_extensions)
681
handshake_set_private_extensions.argtypes = [session_t,
682
ctypes.c_int]
683
handshake_set_private_extensions.restype = None
684
685
credentials_set = _library.gnutls_credentials_set
686
credentials_set.argtypes = [session_t, credentials_type_t,
687
ctypes.c_void_p]
688
credentials_set.restype = _error_code
689
690
strerror = _library.gnutls_strerror
691
strerror.argtypes = [ctypes.c_int]
692
strerror.restype = ctypes.c_char_p
693
694
certificate_type_get = _library.gnutls_certificate_type_get
695
certificate_type_get.argtypes = [session_t]
696
certificate_type_get.restype = _error_code
697
698
certificate_get_peers = _library.gnutls_certificate_get_peers
699
certificate_get_peers.argtypes = [session_t,
700
ctypes.POINTER(ctypes.c_uint)]
701
certificate_get_peers.restype = ctypes.POINTER(datum_t)
702
703
global_set_log_level = _library.gnutls_global_set_log_level
704
global_set_log_level.argtypes = [ctypes.c_int]
705
global_set_log_level.restype = None
706
707
global_set_log_function = _library.gnutls_global_set_log_function
708
global_set_log_function.argtypes = [log_func]
709
global_set_log_function.restype = None
710
711
deinit = _library.gnutls_deinit
712
deinit.argtypes = [session_t]
713
deinit.restype = None
714
715
handshake = _library.gnutls_handshake
716
handshake.argtypes = [session_t]
717
handshake.restype = _error_code
718
handshake.errcheck = _retry_on_error
719
720
transport_set_ptr = _library.gnutls_transport_set_ptr
721
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
722
transport_set_ptr.restype = None
723
724
bye = _library.gnutls_bye
725
bye.argtypes = [session_t, close_request_t]
726
bye.restype = _error_code
727
bye.errcheck = _retry_on_error
728
729
check_version = _library.gnutls_check_version
730
check_version.argtypes = [ctypes.c_char_p]
731
check_version.restype = ctypes.c_char_p
732
733
# All the function declarations below are from gnutls/openpgp.h
734
735
openpgp_crt_init = _library.gnutls_openpgp_crt_init
736
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
737
openpgp_crt_init.restype = _error_code
738
739
openpgp_crt_import = _library.gnutls_openpgp_crt_import
740
openpgp_crt_import.argtypes = [openpgp_crt_t,
741
ctypes.POINTER(datum_t),
742
openpgp_crt_fmt_t]
743
openpgp_crt_import.restype = _error_code
744
745
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
746
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
747
ctypes.POINTER(ctypes.c_uint)]
748
openpgp_crt_verify_self.restype = _error_code
749
750
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
751
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
752
openpgp_crt_deinit.restype = None
753
754
openpgp_crt_get_fingerprint = (
755
_library.gnutls_openpgp_crt_get_fingerprint)
756
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
757
ctypes.c_void_p,
758
ctypes.POINTER(
759
ctypes.c_size_t)]
760
openpgp_crt_get_fingerprint.restype = _error_code
761
762
# Remove non-public functions
763
del _error_code, _retry_on_error
764
# Create the global "gnutls" object, simulating a module
765
gnutls = GnuTLS()
766
767
768
def call_pipe(connection, # : multiprocessing.Connection
769
func, *args, **kwargs):
770
"""This function is meant to be called by multiprocessing.Process
771
772
This function runs func(*args, **kwargs), and writes the resulting
773
return value on the provided multiprocessing.Connection.
774
"""
775
connection.send(func(*args, **kwargs))
776
connection.close()
777
778
404
779
class Client(object):
405
780
"""A representation of a client host served by this server.
406
781
407
782
Attributes:
408
783
approved: bool(); 'None' if not yet approved/disapproved
409
784
approval_delay: datetime.timedelta(); Time to wait for approval
411
786
checker: subprocess.Popen(); a running checker process used
412
787
to see if the client lives.
413
788
'None' if no process is running.
414
checker_callback_tag: a gobject event source tag, or None
789
checker_callback_tag: a GLib event source tag, or None
415
790
checker_command: string; External command which is run to check
416
791
if client lives. %() expansions are done at
417
792
runtime with vars(self) as dict, so that for
418
793
instance %(name)s can be used in the command.
419
checker_initiator_tag: a gobject event source tag, or None
794
checker_initiator_tag: a GLib event source tag, or None
420
795
created: datetime.datetime(); (UTC) object creation
421
796
client_structure: Object describing what attributes a client has
422
797
and is used for storing the client at exit
423
798
current_checker_command: string; current running checker_command
424
disable_initiator_tag: a gobject event source tag, or None
799
disable_initiator_tag: a GLib event source tag, or None
425
800
enabled: bool()
426
801
fingerprint: string (40 or 32 hexadecimal digits); used to
427
802
uniquely identify the client
432
807
last_checker_status: integer between 0 and 255 reflecting exit
433
808
status of last checker. -1 reflects crashed
434
809
checker, -2 means no checker completed yet.
810
last_checker_signal: The signal which killed the last checker, if
811
last_checker_status is -1
435
812
last_enabled: datetime.datetime(); (UTC) or None
436
813
name: string; from the config file, used in log messages and
437
814
D-Bus identifiers
444
821
disabled, or None
445
822
server_settings: The server_settings dict from main()
446
823
"""
447
824
448
825
runtime_expansions = ("approval_delay", "approval_duration",
449
826
"created", "enabled", "expires",
450
827
"fingerprint", "host", "interval",
451
828
"last_approval_request", "last_checked_ok",
452
829
"last_enabled", "name", "timeout")
453
client_defaults = { "timeout": "PT5M",
454
"extended_timeout": "PT15M",
455
"interval": "PT2M",
456
"checker": "fping -q -- %%(host)s",
457
"host": "",
458
"approval_delay": "PT0S",
459
"approval_duration": "PT1S",
460
"approved_by_default": "True",
461
"enabled": "True",
462
}
463
830
client_defaults = {
831
"timeout": "PT5M",
832
"extended_timeout": "PT15M",
833
"interval": "PT2M",
834
"checker": "fping -q -- %%(host)s",
835
"host": "",
836
"approval_delay": "PT0S",
837
"approval_duration": "PT1S",
838
"approved_by_default": "True",
839
"enabled": "True",
840
}
841
464
842
@staticmethod
465
843
def config_parser(config):
466
844
"""Construct a new dict of client settings of this form:
473
851
for client_name in config.sections():
474
852
section = dict(config.items(client_name))
475
853
client = settings[client_name] = {}
476
854
477
855
client["host"] = section["host"]
478
856
# Reformat values from string types to Python types
479
857
client["approved_by_default"] = config.getboolean(
480
858
client_name, "approved_by_default")
481
859
client["enabled"] = config.getboolean(client_name,
482
860
"enabled")
483
861
862
# Uppercase and remove spaces from fingerprint for later
863
# comparison purposes with return value from the
864
# fingerprint() function
484
865
client["fingerprint"] = (section["fingerprint"].upper()
485
866
.replace(" ", ""))
486
867
if "secret" in section:
487
client["secret"] = section["secret"].decode("base64")
868
client["secret"] = codecs.decode(section["secret"]
869
.encode("utf-8"),
870
"base64")
488
871
elif "secfile" in section:
489
872
with open(os.path.expanduser(os.path.expandvars
490
873
(section["secfile"])),
505
888
client["last_approval_request"] = None
506
889
client["last_checked_ok"] = None
507
890
client["last_checker_status"] = -2
508
891
509
892
return settings
510
511
def __init__(self, settings, name = None, server_settings=None):
893
894
def __init__(self, settings, name=None, server_settings=None):
512
895
self.name = name
513
896
if server_settings is None:
514
897
server_settings = {}
516
899
# adding all client settings
517
900
for setting, value in settings.items():
518
901
setattr(self, setting, value)
519
902
520
903
if self.enabled:
521
904
if not hasattr(self, "last_enabled"):
522
905
self.last_enabled = datetime.datetime.utcnow()
526
909
else:
527
910
self.last_enabled = None
528
911
self.expires = None
529
912
530
913
logger.debug("Creating client %r", self.name)
531
# Uppercase and remove spaces from fingerprint for later
532
# comparison purposes with return value from the fingerprint()
533
# function
534
914
logger.debug(" Fingerprint: %s", self.fingerprint)
535
915
self.created = settings.get("created",
536
916
datetime.datetime.utcnow())
537
917
538
918
# attributes specific for this server instance
539
919
self.checker = None
540
920
self.checker_initiator_tag = None
543
923
self.current_checker_command = None
544
924
self.approved = None
545
925
self.approvals_pending = 0
546
self.changedstate = (multiprocessing_manager
547
.Condition(multiprocessing_manager
548
.Lock()))
549
self.client_structure = [attr for attr in
550
self.__dict__.iterkeys()
926
self.changedstate = multiprocessing_manager.Condition(
927
multiprocessing_manager.Lock())
928
self.client_structure = [attr
929
for attr in self.__dict__.keys()
551
930
if not attr.startswith("_")]
552
931
self.client_structure.append("client_structure")
553
554
for name, t in inspect.getmembers(type(self),
555
lambda obj:
556
isinstance(obj,
557
property)):
932
933
for name, t in inspect.getmembers(
934
type(self), lambda obj: isinstance(obj, property)):
558
935
if not name.startswith("_"):
559
936
self.client_structure.append(name)
560
937
561
938
# Send notice to process children that client state has changed
562
939
def send_changedstate(self):
563
940
with self.changedstate:
564
941
self.changedstate.notify_all()
565
942
566
943
def enable(self):
567
944
"""Start this client's checker and timeout hooks"""
568
945
if getattr(self, "enabled", False):
573
950
self.last_enabled = datetime.datetime.utcnow()
574
951
self.init_checker()
575
952
self.send_changedstate()
576
953
577
954
def disable(self, quiet=True):
578
955
"""Disable this client."""
579
956
if not getattr(self, "enabled", False):
581
958
if not quiet:
582
959
logger.info("Disabling client %s", self.name)
583
960
if getattr(self, "disable_initiator_tag", None) is not None:
584
gobject.source_remove(self.disable_initiator_tag)
961
GLib.source_remove(self.disable_initiator_tag)
585
962
self.disable_initiator_tag = None
586
963
self.expires = None
587
964
if getattr(self, "checker_initiator_tag", None) is not None:
588
gobject.source_remove(self.checker_initiator_tag)
965
GLib.source_remove(self.checker_initiator_tag)
589
966
self.checker_initiator_tag = None
590
967
self.stop_checker()
591
968
self.enabled = False
592
969
if not quiet:
593
970
self.send_changedstate()
594
# Do not run this again if called by a gobject.timeout_add
971
# Do not run this again if called by a GLib.timeout_add
595
972
return False
596
973
597
974
def __del__(self):
598
975
self.disable()
599
976
600
977
def init_checker(self):
601
978
# Schedule a new checker to be started an 'interval' from now,
602
979
# and every interval from then on.
603
980
if self.checker_initiator_tag is not None:
604
gobject.source_remove(self.checker_initiator_tag)
605
self.checker_initiator_tag = (gobject.timeout_add
606
(int(self.interval
607
.total_seconds() * 1000),
608
self.start_checker))
981
GLib.source_remove(self.checker_initiator_tag)
982
self.checker_initiator_tag = GLib.timeout_add(
983
int(self.interval.total_seconds() * 1000),
984
self.start_checker)
609
985
# Schedule a disable() when 'timeout' has passed
610
986
if self.disable_initiator_tag is not None:
611
gobject.source_remove(self.disable_initiator_tag)
612
self.disable_initiator_tag = (gobject.timeout_add
613
(int(self.timeout
614
.total_seconds() * 1000),
615
self.disable))
987
GLib.source_remove(self.disable_initiator_tag)
988
self.disable_initiator_tag = GLib.timeout_add(
989
int(self.timeout.total_seconds() * 1000), self.disable)
616
990
# Also start a new checker *right now*.
617
991
self.start_checker()
618
619
def checker_callback(self, pid, condition, command):
992
993
def checker_callback(self, source, condition, connection,
994
command):
620
995
"""The checker has completed, so take appropriate actions."""
621
996
self.checker_callback_tag = None
622
997
self.checker = None
623
if os.WIFEXITED(condition):
624
self.last_checker_status = os.WEXITSTATUS(condition)
998
# Read return code from connection (see call_pipe)
999
returncode = connection.recv()
1000
connection.close()
1001
1002
if returncode >= 0:
1003
self.last_checker_status = returncode
1004
self.last_checker_signal = None
625
1005
if self.last_checker_status == 0:
626
1006
logger.info("Checker for %(name)s succeeded",
627
1007
vars(self))
628
1008
self.checked_ok()
629
1009
else:
630
logger.info("Checker for %(name)s failed",
631
vars(self))
1010
logger.info("Checker for %(name)s failed", vars(self))
632
1011
else:
633
1012
self.last_checker_status = -1
1013
self.last_checker_signal = -returncode
634
1014
logger.warning("Checker for %(name)s crashed?",
635
1015
vars(self))
636
1016
return False
1017
637
1018
def checked_ok(self):
638
1019
"""Assert that the client has been seen, alive and well."""
639
1020
self.last_checked_ok = datetime.datetime.utcnow()
640
1021
self.last_checker_status = 0
1022
self.last_checker_signal = None
641
1023
self.bump_timeout()
642
1024
643
1025
def bump_timeout(self, timeout=None):
644
1026
"""Bump up the timeout for this client."""
645
1027
if timeout is None:
646
1028
timeout = self.timeout
647
1029
if self.disable_initiator_tag is not None:
648
gobject.source_remove(self.disable_initiator_tag)
1030
GLib.source_remove(self.disable_initiator_tag)
649
1031
self.disable_initiator_tag = None
650
1032
if getattr(self, "enabled", False):
651
self.disable_initiator_tag = (gobject.timeout_add
652
(int(timeout.total_seconds()
653
* 1000), self.disable))
1033
self.disable_initiator_tag = GLib.timeout_add(
1034
int(timeout.total_seconds() * 1000), self.disable)
654
1035
self.expires = datetime.datetime.utcnow() + timeout
655
1036
656
1037
def need_approval(self):
657
1038
self.last_approval_request = datetime.datetime.utcnow()
658
1039
659
1040
def start_checker(self):
660
1041
"""Start a new checker subprocess if one is not running.
661
1042
662
1043
If a checker already exists, leave it running and do
663
1044
nothing."""
664
1045
# The reason for not killing a running checker is that if we
669
1050
# checkers alone, the checker would have to take more time
670
1051
# than 'timeout' for the client to be disabled, which is as it
671
1052
# should be.
672
673
# If a checker exists, make sure it is not a zombie
674
try:
675
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
676
except AttributeError:
677
pass
678
except OSError as error:
679
if error.errno != errno.ECHILD:
680
raise
681
else:
682
if pid:
683
logger.warning("Checker was a zombie")
684
gobject.source_remove(self.checker_callback_tag)
685
self.checker_callback(pid, status,
686
self.current_checker_command)
1053
1054
if self.checker is not None and not self.checker.is_alive():
1055
logger.warning("Checker was not alive; joining")
1056
self.checker.join()
1057
self.checker = None
687
1058
# Start a new checker if needed
688
1059
if self.checker is None:
689
1060
# Escape attributes for the shell
690
escaped_attrs = { attr:
691
re.escape(str(getattr(self, attr)))
692
for attr in self.runtime_expansions }
1061
escaped_attrs = {
1062
attr: re.escape(str(getattr(self, attr)))
1063
for attr in self.runtime_expansions}
693
1064
try:
694
1065
command = self.checker_command % escaped_attrs
695
1066
except TypeError as error:
696
1067
logger.error('Could not format string "%s"',
697
self.checker_command, exc_info=error)
698
return True # Try again later
1068
self.checker_command,
1069
exc_info=error)
1070
return True # Try again later
699
1071
self.current_checker_command = command
700
try:
701
logger.info("Starting checker %r for %s",
702
command, self.name)
703
# We don't need to redirect stdout and stderr, since
704
# in normal mode, that is already done by daemon(),
705
# and in debug mode we don't want to. (Stdin is
706
# always replaced by /dev/null.)
707
# The exception is when not debugging but nevertheless
708
# running in the foreground; use the previously
709
# created wnull.
710
popen_args = {}
711
if (not self.server_settings["debug"]
712
and self.server_settings["foreground"]):
713
popen_args.update({"stdout": wnull,
714
"stderr": wnull })
715
self.checker = subprocess.Popen(command,
716
close_fds=True,
717
shell=True, cwd="/",
718
**popen_args)
719
except OSError as error:
720
logger.error("Failed to start subprocess",
721
exc_info=error)
722
return True
723
self.checker_callback_tag = (gobject.child_watch_add
724
(self.checker.pid,
725
self.checker_callback,
726
data=command))
727
# The checker may have completed before the gobject
728
# watch was added. Check for this.
729
try:
730
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
731
except OSError as error:
732
if error.errno == errno.ECHILD:
733
# This should never happen
734
logger.error("Child process vanished",
735
exc_info=error)
736
return True
737
raise
738
if pid:
739
gobject.source_remove(self.checker_callback_tag)
740
self.checker_callback(pid, status, command)
741
# Re-run this periodically if run by gobject.timeout_add
1072
logger.info("Starting checker %r for %s", command,
1073
self.name)
1074
# We don't need to redirect stdout and stderr, since
1075
# in normal mode, that is already done by daemon(),
1076
# and in debug mode we don't want to. (Stdin is
1077
# always replaced by /dev/null.)
1078
# The exception is when not debugging but nevertheless
1079
# running in the foreground; use the previously
1080
# created wnull.
1081
popen_args = {"close_fds": True,
1082
"shell": True,
1083
"cwd": "/"}
1084
if (not self.server_settings["debug"]
1085
and self.server_settings["foreground"]):
1086
popen_args.update({"stdout": wnull,
1087
"stderr": wnull})
1088
pipe = multiprocessing.Pipe(duplex=False)
1089
self.checker = multiprocessing.Process(
1090
target=call_pipe,
1091
args=(pipe[1], subprocess.call, command),
1092
kwargs=popen_args)
1093
self.checker.start()
1094
self.checker_callback_tag = GLib.io_add_watch(
1095
pipe[0].fileno(), GLib.IO_IN,
1096
self.checker_callback, pipe[0], command)
1097
# Re-run this periodically if run by GLib.timeout_add
742
1098
return True
743
1099
744
1100
def stop_checker(self):
745
1101
"""Force the checker process, if any, to stop."""
746
1102
if self.checker_callback_tag:
747
gobject.source_remove(self.checker_callback_tag)
1103
GLib.source_remove(self.checker_callback_tag)
748
1104
self.checker_callback_tag = None
749
1105
if getattr(self, "checker", None) is None:
750
1106
return
751
1107
logger.debug("Stopping checker for %(name)s", vars(self))
752
try:
753
self.checker.terminate()
754
#time.sleep(0.5)
755
#if self.checker.poll() is None:
756
# self.checker.kill()
757
except OSError as error:
758
if error.errno != errno.ESRCH: # No such process
759
raise
1108
self.checker.terminate()
760
1109
self.checker = None
761
1110
762
1111
763
def dbus_service_property(dbus_interface, signature="v",
764
access="readwrite", byte_arrays=False):
1112
def dbus_service_property(dbus_interface,
1113
signature="v",
1114
access="readwrite",
1115
byte_arrays=False):
765
1116
"""Decorators for marking methods of a DBusObjectWithProperties to
766
1117
become properties on the D-Bus.
767
1118
768
1119
The decorated method will be called with no arguments by "Get"
769
1120
and with one argument by "Set".
770
1121
771
1122
The parameters, where they are supported, are the same as
772
1123
dbus.service.method, except there is only "signature", since the
773
1124
type from Get() and the type sent to Set() is the same.
777
1128
if byte_arrays and signature != "ay":
778
1129
raise ValueError("Byte arrays not supported for non-'ay'"
779
1130
" signature {!r}".format(signature))
1131
780
1132
def decorator(func):
781
1133
func._dbus_is_property = True
782
1134
func._dbus_interface = dbus_interface
785
1137
func._dbus_name = func.__name__
786
1138
if func._dbus_name.endswith("_dbus_property"):
787
1139
func._dbus_name = func._dbus_name[:-14]
788
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
1140
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
789
1141
return func
1142
790
1143
return decorator
791
1144
792
1145
793
1146
def dbus_interface_annotations(dbus_interface):
794
1147
"""Decorator for marking functions returning interface annotations
795
1148
796
1149
Usage:
797
1150
798
1151
@dbus_interface_annotations("org.example.Interface")
799
1152
def _foo(self): # Function name does not matter
800
1153
return {"org.freedesktop.DBus.Deprecated": "true",
801
1154
"org.freedesktop.DBus.Property.EmitsChangedSignal":
802
1155
"false"}
803
1156
"""
1157
804
1158
def decorator(func):
805
1159
func._dbus_is_interface = True
806
1160
func._dbus_interface = dbus_interface
807
1161
func._dbus_name = dbus_interface
808
1162
return func
1163
809
1164
return decorator
810
1165
811
1166
812
1167
def dbus_annotations(annotations):
813
1168
"""Decorator to annotate D-Bus methods, signals or properties
814
1169
Usage:
815
1170
816
1171
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
817
1172
"org.freedesktop.DBus.Property."
818
1173
"EmitsChangedSignal": "false"})
820
1175
access="r")
821
1176
def Property_dbus_property(self):
822
1177
return dbus.Boolean(False)
1178
1179
See also the DBusObjectWithAnnotations class.
823
1180
"""
1181
824
1182
def decorator(func):
825
1183
func._dbus_annotations = annotations
826
1184
return func
1185
827
1186
return decorator
828
1187
829
1188
832
1191
"""
833
1192
pass
834
1193
1194
835
1195
class DBusPropertyAccessException(DBusPropertyException):
836
1196
"""A property's access permissions disallows an operation.
837
1197
"""
844
1204
pass
845
1205
846
1206
847
class DBusObjectWithProperties(dbus.service.Object):
848
"""A D-Bus object with properties.
849
850
Classes inheriting from this can use the dbus_service_property
851
decorator to expose methods as D-Bus properties. It exposes the
852
standard Get(), Set(), and GetAll() methods on the D-Bus.
1207
class DBusObjectWithAnnotations(dbus.service.Object):
1208
"""A D-Bus object with annotations.
1209
1210
Classes inheriting from this can use the dbus_annotations
1211
decorator to add annotations to methods or signals.
853
1212
"""
854
1213
855
1214
@staticmethod
856
1215
def _is_dbus_thing(thing):
857
1216
"""Returns a function testing if an attribute is a D-Bus thing
858
1217
859
1218
If called like _is_dbus_thing("method") it returns a function
860
1219
suitable for use as predicate to inspect.getmembers().
861
1220
"""
862
1221
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
863
1222
False)
864
1223
865
1224
def _get_all_dbus_things(self, thing):
866
1225
"""Returns a generator of (name, attribute) pairs
867
1226
"""
868
return ((getattr(athing.__get__(self), "_dbus_name",
869
name),
1227
return ((getattr(athing.__get__(self), "_dbus_name", name),
870
1228
athing.__get__(self))
871
1229
for cls in self.__class__.__mro__
872
1230
for name, athing in
873
inspect.getmembers(cls,
874
self._is_dbus_thing(thing)))
875
1231
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1232
1233
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1234
out_signature="s",
1235
path_keyword='object_path',
1236
connection_keyword='connection')
1237
def Introspect(self, object_path, connection):
1238
"""Overloading of standard D-Bus method.
1239
1240
Inserts annotation tags on methods and signals.
1241
"""
1242
xmlstring = dbus.service.Object.Introspect(self, object_path,
1243
connection)
1244
try:
1245
document = xml.dom.minidom.parseString(xmlstring)
1246
1247
for if_tag in document.getElementsByTagName("interface"):
1248
# Add annotation tags
1249
for typ in ("method", "signal"):
1250
for tag in if_tag.getElementsByTagName(typ):
1251
annots = dict()
1252
for name, prop in (self.
1253
_get_all_dbus_things(typ)):
1254
if (name == tag.getAttribute("name")
1255
and prop._dbus_interface
1256
== if_tag.getAttribute("name")):
1257
annots.update(getattr(
1258
prop, "_dbus_annotations", {}))
1259
for name, value in annots.items():
1260
ann_tag = document.createElement(
1261
"annotation")
1262
ann_tag.setAttribute("name", name)
1263
ann_tag.setAttribute("value", value)
1264
tag.appendChild(ann_tag)
1265
# Add interface annotation tags
1266
for annotation, value in dict(
1267
itertools.chain.from_iterable(
1268
annotations().items()
1269
for name, annotations
1270
in self._get_all_dbus_things("interface")
1271
if name == if_tag.getAttribute("name")
1272
)).items():
1273
ann_tag = document.createElement("annotation")
1274
ann_tag.setAttribute("name", annotation)
1275
ann_tag.setAttribute("value", value)
1276
if_tag.appendChild(ann_tag)
1277
# Fix argument name for the Introspect method itself
1278
if (if_tag.getAttribute("name")
1279
== dbus.INTROSPECTABLE_IFACE):
1280
for cn in if_tag.getElementsByTagName("method"):
1281
if cn.getAttribute("name") == "Introspect":
1282
for arg in cn.getElementsByTagName("arg"):
1283
if (arg.getAttribute("direction")
1284
== "out"):
1285
arg.setAttribute("name",
1286
"xml_data")
1287
xmlstring = document.toxml("utf-8")
1288
document.unlink()
1289
except (AttributeError, xml.dom.DOMException,
1290
xml.parsers.expat.ExpatError) as error:
1291
logger.error("Failed to override Introspection method",
1292
exc_info=error)
1293
return xmlstring
1294
1295
1296
class DBusObjectWithProperties(DBusObjectWithAnnotations):
1297
"""A D-Bus object with properties.
1298
1299
Classes inheriting from this can use the dbus_service_property
1300
decorator to expose methods as D-Bus properties. It exposes the
1301
standard Get(), Set(), and GetAll() methods on the D-Bus.
1302
"""
1303
876
1304
def _get_dbus_property(self, interface_name, property_name):
877
1305
"""Returns a bound method if one exists which is a D-Bus
878
1306
property with the specified name and interface.
879
1307
"""
880
for cls in self.__class__.__mro__:
881
for name, value in (inspect.getmembers
882
(cls,
883
self._is_dbus_thing("property"))):
1308
for cls in self.__class__.__mro__:
1309
for name, value in inspect.getmembers(
1310
cls, self._is_dbus_thing("property")):
884
1311
if (value._dbus_name == property_name
885
1312
and value._dbus_interface == interface_name):
886
1313
return value.__get__(self)
887
1314
888
1315
# No such property
889
raise DBusPropertyNotFound(self.dbus_object_path + ":"
890
+ interface_name + "."
891
+ property_name)
892
893
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1316
raise DBusPropertyNotFound("{}:{}.{}".format(
1317
self.dbus_object_path, interface_name, property_name))
1318
1319
@classmethod
1320
def _get_all_interface_names(cls):
1321
"""Get a sequence of all interfaces supported by an object"""
1322
return (name for name in set(getattr(getattr(x, attr),
1323
"_dbus_interface", None)
1324
for x in (inspect.getmro(cls))
1325
for attr in dir(x))
1326
if name is not None)
1327
1328
@dbus.service.method(dbus.PROPERTIES_IFACE,
1329
in_signature="ss",
894
1330
out_signature="v")
895
1331
def Get(self, interface_name, property_name):
896
1332
"""Standard D-Bus property Get() method, see D-Bus standard.
902
1338
if not hasattr(value, "variant_level"):
903
1339
return value
904
1340
return type(value)(value, variant_level=value.variant_level+1)
905
1341
906
1342
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
907
1343
def Set(self, interface_name, property_name, value):
908
1344
"""Standard D-Bus property Set() method, see D-Bus standard.
920
1356
value = dbus.ByteArray(b''.join(chr(byte)
921
1357
for byte in value))
922
1358
prop(value)
923
924
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1359
1360
@dbus.service.method(dbus.PROPERTIES_IFACE,
1361
in_signature="s",
925
1362
out_signature="a{sv}")
926
1363
def GetAll(self, interface_name):
927
1364
"""Standard D-Bus property GetAll() method, see D-Bus
928
1365
standard.
929
1366
930
1367
Note: Will not include properties with access="write".
931
1368
"""
932
1369
properties = {}
942
1379
if not hasattr(value, "variant_level"):
943
1380
properties[name] = value
944
1381
continue
945
properties[name] = type(value)(value, variant_level=
946
value.variant_level+1)
1382
properties[name] = type(value)(
1383
value, variant_level=value.variant_level + 1)
947
1384
return dbus.Dictionary(properties, signature="sv")
948
1385
949
1386
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
950
1387
def PropertiesChanged(self, interface_name, changed_properties,
951
1388
invalidated_properties):
953
1390
standard.
954
1391
"""
955
1392
pass
956
1393
957
1394
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
958
1395
out_signature="s",
959
1396
path_keyword='object_path',
960
1397
connection_keyword='connection')
961
1398
def Introspect(self, object_path, connection):
962
1399
"""Overloading of standard D-Bus method.
963
1400
964
1401
Inserts property tags and interface annotation tags.
965
1402
"""
966
xmlstring = dbus.service.Object.Introspect(self, object_path,
967
connection)
1403
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1404
object_path,
1405
connection)
968
1406
try:
969
1407
document = xml.dom.minidom.parseString(xmlstring)
1408
970
1409
def make_tag(document, name, prop):
971
1410
e = document.createElement("property")
972
1411
e.setAttribute("name", name)
973
1412
e.setAttribute("type", prop._dbus_signature)
974
1413
e.setAttribute("access", prop._dbus_access)
975
1414
return e
1415
976
1416
for if_tag in document.getElementsByTagName("interface"):
977
1417
# Add property tags
978
1418
for tag in (make_tag(document, name, prop)
981
1421
if prop._dbus_interface
982
1422
== if_tag.getAttribute("name")):
983
1423
if_tag.appendChild(tag)
984
# Add annotation tags
985
for typ in ("method", "signal", "property"):
986
for tag in if_tag.getElementsByTagName(typ):
987
annots = dict()
988
for name, prop in (self.
989
_get_all_dbus_things(typ)):
990
if (name == tag.getAttribute("name")
991
and prop._dbus_interface
992
== if_tag.getAttribute("name")):
993
annots.update(getattr
994
(prop,
995
"_dbus_annotations",
996
{}))
997
for name, value in annots.items():
998
ann_tag = document.createElement(
999
"annotation")
1000
ann_tag.setAttribute("name", name)
1001
ann_tag.setAttribute("value", value)
1002
tag.appendChild(ann_tag)
1003
# Add interface annotation tags
1004
for annotation, value in dict(
1005
itertools.chain.from_iterable(
1006
annotations().items()
1007
for name, annotations in
1008
self._get_all_dbus_things("interface")
1009
if name == if_tag.getAttribute("name")
1010
)).items():
1011
ann_tag = document.createElement("annotation")
1012
ann_tag.setAttribute("name", annotation)
1013
ann_tag.setAttribute("value", value)
1014
if_tag.appendChild(ann_tag)
1424
# Add annotation tags for properties
1425
for tag in if_tag.getElementsByTagName("property"):
1426
annots = dict()
1427
for name, prop in self._get_all_dbus_things(
1428
"property"):
1429
if (name == tag.getAttribute("name")
1430
and prop._dbus_interface
1431
== if_tag.getAttribute("name")):
1432
annots.update(getattr(
1433
prop, "_dbus_annotations", {}))
1434
for name, value in annots.items():
1435
ann_tag = document.createElement(
1436
"annotation")
1437
ann_tag.setAttribute("name", name)
1438
ann_tag.setAttribute("value", value)
1439
tag.appendChild(ann_tag)
1015
1440
# Add the names to the return values for the
1016
1441
# "org.freedesktop.DBus.Properties" methods
1017
1442
if (if_tag.getAttribute("name")
1035
1460
exc_info=error)
1036
1461
return xmlstring
1037
1462
1463
try:
1464
dbus.OBJECT_MANAGER_IFACE
1465
except AttributeError:
1466
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1467
1468
1469
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1470
"""A D-Bus object with an ObjectManager.
1471
1472
Classes inheriting from this exposes the standard
1473
GetManagedObjects call and the InterfacesAdded and
1474
InterfacesRemoved signals on the standard
1475
"org.freedesktop.DBus.ObjectManager" interface.
1476
1477
Note: No signals are sent automatically; they must be sent
1478
manually.
1479
"""
1480
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1481
out_signature="a{oa{sa{sv}}}")
1482
def GetManagedObjects(self):
1483
"""This function must be overridden"""
1484
raise NotImplementedError()
1485
1486
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1487
signature="oa{sa{sv}}")
1488
def InterfacesAdded(self, object_path, interfaces_and_properties):
1489
pass
1490
1491
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1492
def InterfacesRemoved(self, object_path, interfaces):
1493
pass
1494
1495
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1496
out_signature="s",
1497
path_keyword='object_path',
1498
connection_keyword='connection')
1499
def Introspect(self, object_path, connection):
1500
"""Overloading of standard D-Bus method.
1501
1502
Override return argument name of GetManagedObjects to be
1503
"objpath_interfaces_and_properties"
1504
"""
1505
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1506
object_path,
1507
connection)
1508
try:
1509
document = xml.dom.minidom.parseString(xmlstring)
1510
1511
for if_tag in document.getElementsByTagName("interface"):
1512
# Fix argument name for the GetManagedObjects method
1513
if (if_tag.getAttribute("name")
1514
== dbus.OBJECT_MANAGER_IFACE):
1515
for cn in if_tag.getElementsByTagName("method"):
1516
if (cn.getAttribute("name")
1517
== "GetManagedObjects"):
1518
for arg in cn.getElementsByTagName("arg"):
1519
if (arg.getAttribute("direction")
1520
== "out"):
1521
arg.setAttribute(
1522
"name",
1523
"objpath_interfaces"
1524
"_and_properties")
1525
xmlstring = document.toxml("utf-8")
1526
document.unlink()
1527
except (AttributeError, xml.dom.DOMException,
1528
xml.parsers.expat.ExpatError) as error:
1529
logger.error("Failed to override Introspection method",
1530
exc_info=error)
1531
return xmlstring
1532
1038
1533
1039
1534
def datetime_to_dbus(dt, variant_level=0):
1040
1535
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1041
1536
if dt is None:
1042
return dbus.String("", variant_level = variant_level)
1043
return dbus.String(dt.isoformat(),
1044
variant_level=variant_level)
1537
return dbus.String("", variant_level=variant_level)
1538
return dbus.String(dt.isoformat(), variant_level=variant_level)
1045
1539
1046
1540
1047
1541
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1049
1543
dbus.service.Object, it will add alternate D-Bus attributes with
1050
1544
interface names according to the "alt_interface_names" mapping.
1051
1545
Usage:
1052
1546
1053
1547
@alternate_dbus_interfaces({"org.example.Interface":
1054
1548
"net.example.AlternateInterface"})
1055
1549
class SampleDBusObject(dbus.service.Object):
1056
1550
@dbus.service.method("org.example.Interface")
1057
1551
def SampleDBusMethod():
1058
1552
pass
1059
1553
1060
1554
The above "SampleDBusMethod" on "SampleDBusObject" will be
1061
1555
reachable via two interfaces: "org.example.Interface" and
1062
1556
"net.example.AlternateInterface", the latter of which will have
1063
1557
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1064
1558
"true", unless "deprecate" is passed with a False value.
1065
1559
1066
1560
This works for methods and signals, and also for D-Bus properties
1067
1561
(from DBusObjectWithProperties) and interfaces (from the
1068
1562
dbus_interface_annotations decorator).
1069
1563
"""
1564
1070
1565
def wrapper(cls):
1071
1566
for orig_interface_name, alt_interface_name in (
1072
alt_interface_names.items()):
1567
alt_interface_names.items()):
1073
1568
attr = {}
1074
1569
interface_names = set()
1075
1570
# Go though all attributes of the class
1077
1572
# Ignore non-D-Bus attributes, and D-Bus attributes
1078
1573
# with the wrong interface name
1079
1574
if (not hasattr(attribute, "_dbus_interface")
1080
or not attribute._dbus_interface
1081
.startswith(orig_interface_name)):
1575
or not attribute._dbus_interface.startswith(
1576
orig_interface_name)):
1082
1577
continue
1083
1578
# Create an alternate D-Bus interface name based on
1084
1579
# the current name
1085
alt_interface = (attribute._dbus_interface
1086
.replace(orig_interface_name,
1087
alt_interface_name))
1580
alt_interface = attribute._dbus_interface.replace(
1581
orig_interface_name, alt_interface_name)
1088
1582
interface_names.add(alt_interface)
1089
1583
# Is this a D-Bus signal?
1090
1584
if getattr(attribute, "_dbus_is_signal", False):
1091
1585
# Extract the original non-method undecorated
1092
1586
# function by black magic
1093
nonmethod_func = (dict(
1587
if sys.version_info.major == 2:
1588
nonmethod_func = (dict(
1094
1589
zip(attribute.func_code.co_freevars,
1095
attribute.__closure__))["func"]
1096
.cell_contents)
1590
attribute.__closure__))
1591
["func"].cell_contents)
1592
else:
1593
nonmethod_func = (dict(
1594
zip(attribute.__code__.co_freevars,
1595
attribute.__closure__))
1596
["func"].cell_contents)
1097
1597
# Create a new, but exactly alike, function
1098
1598
# object, and decorate it to be a new D-Bus signal
1099
1599
# with the alternate D-Bus interface name
1100
new_function = (dbus.service.signal
1101
(alt_interface,
1102
attribute._dbus_signature)
1103
(types.FunctionType(
1104
nonmethod_func.func_code,
1105
nonmethod_func.func_globals,
1106
nonmethod_func.func_name,
1107
nonmethod_func.func_defaults,
1108
nonmethod_func.func_closure)))
1600
new_function = copy_function(nonmethod_func)
1601
new_function = (dbus.service.signal(
1602
alt_interface,
1603
attribute._dbus_signature)(new_function))
1109
1604
# Copy annotations, if any
1110
1605
try:
1111
new_function._dbus_annotations = (
1112
dict(attribute._dbus_annotations))
1606
new_function._dbus_annotations = dict(
1607
attribute._dbus_annotations)
1113
1608
except AttributeError:
1114
1609
pass
1610
1115
1611
# Define a creator of a function to call both the
1116
1612
# original and alternate functions, so both the
1117
1613
# original and alternate signals gets sent when
1120
1616
"""This function is a scope container to pass
1121
1617
func1 and func2 to the "call_both" function
1122
1618
outside of its arguments"""
1619
1620
@functools.wraps(func2)
1123
1621
def call_both(*args, **kwargs):
1124
1622
"""This function will emit two D-Bus
1125
1623
signals by calling func1 and func2"""
1126
1624
func1(*args, **kwargs)
1127
1625
func2(*args, **kwargs)
1626
# Make wrapper function look like a D-Bus
1627
# signal
1628
for name, attr in inspect.getmembers(func2):
1629
if name.startswith("_dbus_"):
1630
setattr(call_both, name, attr)
1631
1128
1632
return call_both
1129
1633
# Create the "call_both" function and add it to
1130
1634
# the class
1135
1639
# object. Decorate it to be a new D-Bus method
1136
1640
# with the alternate D-Bus interface name. Add it
1137
1641
# to the class.
1138
attr[attrname] = (dbus.service.method
1139
(alt_interface,
1140
attribute._dbus_in_signature,
1141
attribute._dbus_out_signature)
1142
(types.FunctionType
1143
(attribute.func_code,
1144
attribute.func_globals,
1145
attribute.func_name,
1146
attribute.func_defaults,
1147
attribute.func_closure)))
1642
attr[attrname] = (
1643
dbus.service.method(
1644
alt_interface,
1645
attribute._dbus_in_signature,
1646
attribute._dbus_out_signature)
1647
(copy_function(attribute)))
1148
1648
# Copy annotations, if any
1149
1649
try:
1150
attr[attrname]._dbus_annotations = (
1151
dict(attribute._dbus_annotations))
1650
attr[attrname]._dbus_annotations = dict(
1651
attribute._dbus_annotations)
1152
1652
except AttributeError:
1153
1653
pass
1154
1654
# Is this a D-Bus property?
1157
1657
# object, and decorate it to be a new D-Bus
1158
1658
# property with the alternate D-Bus interface
1159
1659
# name. Add it to the class.
1160
attr[attrname] = (dbus_service_property
1161
(alt_interface,
1162
attribute._dbus_signature,
1163
attribute._dbus_access,
1164
attribute
1165
._dbus_get_args_options
1166
["byte_arrays"])
1167
(types.FunctionType
1168
(attribute.func_code,
1169
attribute.func_globals,
1170
attribute.func_name,
1171
attribute.func_defaults,
1172
attribute.func_closure)))
1660
attr[attrname] = (dbus_service_property(
1661
alt_interface, attribute._dbus_signature,
1662
attribute._dbus_access,
1663
attribute._dbus_get_args_options
1664
["byte_arrays"])
1665
(copy_function(attribute)))
1173
1666
# Copy annotations, if any
1174
1667
try:
1175
attr[attrname]._dbus_annotations = (
1176
dict(attribute._dbus_annotations))
1668
attr[attrname]._dbus_annotations = dict(
1669
attribute._dbus_annotations)
1177
1670
except AttributeError:
1178
1671
pass
1179
1672
# Is this a D-Bus interface?
1182
1675
# object. Decorate it to be a new D-Bus interface
1183
1676
# with the alternate D-Bus interface name. Add it
1184
1677
# to the class.
1185
attr[attrname] = (dbus_interface_annotations
1186
(alt_interface)
1187
(types.FunctionType
1188
(attribute.func_code,
1189
attribute.func_globals,
1190
attribute.func_name,
1191
attribute.func_defaults,
1192
attribute.func_closure)))
1678
attr[attrname] = (
1679
dbus_interface_annotations(alt_interface)
1680
(copy_function(attribute)))
1193
1681
if deprecate:
1194
1682
# Deprecate all alternate interfaces
1195
iname="_AlternateDBusNames_interface_annotation{}"
1683
iname = "_AlternateDBusNames_interface_annotation{}"
1196
1684
for interface_name in interface_names:
1685
1197
1686
@dbus_interface_annotations(interface_name)
1198
1687
def func(self):
1199
return { "org.freedesktop.DBus.Deprecated":
1200
"true" }
1688
return {"org.freedesktop.DBus.Deprecated":
1689
"true"}
1201
1690
# Find an unused name
1202
1691
for aname in (iname.format(i)
1203
1692
for i in itertools.count()):
1207
1696
if interface_names:
1208
1697
# Replace the class with a new subclass of it with
1209
1698
# methods, signals, etc. as created above.
1210
cls = type(b"{}Alternate".format(cls.__name__),
1211
(cls,), attr)
1699
if sys.version_info.major == 2:
1700
cls = type(b"{}Alternate".format(cls.__name__),
1701
(cls, ), attr)
1702
else:
1703
cls = type("{}Alternate".format(cls.__name__),
1704
(cls, ), attr)
1212
1705
return cls
1706
1213
1707
return wrapper
1214
1708
1215
1709
1216
1710
@alternate_dbus_interfaces({"se.recompile.Mandos":
1217
"se.bsnet.fukt.Mandos"})
1711
"se.bsnet.fukt.Mandos"})
1218
1712
class ClientDBus(Client, DBusObjectWithProperties):
1219
1713
"""A Client class using D-Bus
1220
1714
1221
1715
Attributes:
1222
1716
dbus_object_path: dbus.ObjectPath
1223
1717
bus: dbus.SystemBus()
1224
1718
"""
1225
1719
1226
1720
runtime_expansions = (Client.runtime_expansions
1227
+ ("dbus_object_path",))
1228
1721
+ ("dbus_object_path", ))
1722
1229
1723
_interface = "se.recompile.Mandos.Client"
1230
1724
1231
1725
# dbus.service.Object doesn't use super(), so we can't either.
1232
1233
def __init__(self, bus = None, *args, **kwargs):
1726
1727
def __init__(self, bus=None, *args, **kwargs):
1234
1728
self.bus = bus
1235
1729
Client.__init__(self, *args, **kwargs)
1236
1730
# Only now, when this client is initialized, can it show up on
1238
1732
client_object_name = str(self.name).translate(
1239
1733
{ord("."): ord("_"),
1240
1734
ord("-"): ord("_")})
1241
self.dbus_object_path = (dbus.ObjectPath
1242
("/clients/" + client_object_name))
1735
self.dbus_object_path = dbus.ObjectPath(
1736
"/clients/" + client_object_name)
1243
1737
DBusObjectWithProperties.__init__(self, self.bus,
1244
1738
self.dbus_object_path)
1245
1246
def notifychangeproperty(transform_func,
1247
dbus_name, type_func=lambda x: x,
1248
variant_level=1, invalidate_only=False,
1739
1740
def notifychangeproperty(transform_func, dbus_name,
1741
type_func=lambda x: x,
1742
variant_level=1,
1743
invalidate_only=False,
1249
1744
_interface=_interface):
1250
1745
""" Modify a variable so that it's a property which announces
1251
1746
its changes to DBus.
1252
1747
1253
1748
transform_fun: Function that takes a value and a variant_level
1254
1749
and transforms it to a D-Bus type.
1255
1750
dbus_name: D-Bus name of the variable
1258
1753
variant_level: D-Bus variant level. Default: 1
1259
1754
"""
1260
1755
attrname = "_{}".format(dbus_name)
1756
1261
1757
def setter(self, value):
1262
1758
if hasattr(self, "dbus_object_path"):
1263
1759
if (not hasattr(self, attrname) or
1264
1760
type_func(getattr(self, attrname, None))
1265
1761
!= type_func(value)):
1266
1762
if invalidate_only:
1267
self.PropertiesChanged(_interface,
1268
dbus.Dictionary(),
1269
dbus.Array
1270
((dbus_name,)))
1763
self.PropertiesChanged(
1764
_interface, dbus.Dictionary(),
1765
dbus.Array((dbus_name, )))
1271
1766
else:
1272
dbus_value = transform_func(type_func(value),
1273
variant_level
1274
=variant_level)
1767
dbus_value = transform_func(
1768
type_func(value),
1769
variant_level=variant_level)
1275
1770
self.PropertyChanged(dbus.String(dbus_name),
1276
1771
dbus_value)
1277
self.PropertiesChanged(_interface,
1278
dbus.Dictionary({
1279
dbus.String(dbus_name):
1280
dbus_value }), dbus.Array())
1772
self.PropertiesChanged(
1773
_interface,
1774
dbus.Dictionary({dbus.String(dbus_name):
1775
dbus_value}),
1776
dbus.Array())
1281
1777
setattr(self, attrname, value)
1282
1778
1283
1779
return property(lambda self: getattr(self, attrname), setter)
1284
1780
1285
1781
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1286
1782
approvals_pending = notifychangeproperty(dbus.Boolean,
1287
1783
"ApprovalPending",
1288
type_func = bool)
1784
type_func=bool)
1289
1785
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1290
1786
last_enabled = notifychangeproperty(datetime_to_dbus,
1291
1787
"LastEnabled")
1292
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1293
type_func = lambda checker:
1294
checker is not None)
1788
checker = notifychangeproperty(
1789
dbus.Boolean, "CheckerRunning",
1790
type_func=lambda checker: checker is not None)
1295
1791
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1296
1792
"LastCheckedOK")
1297
1793
last_checker_status = notifychangeproperty(dbus.Int16,
1300
1796
datetime_to_dbus, "LastApprovalRequest")
1301
1797
approved_by_default = notifychangeproperty(dbus.Boolean,
1302
1798
"ApprovedByDefault")
1303
approval_delay = notifychangeproperty(dbus.UInt64,
1304
"ApprovalDelay",
1305
type_func =
1306
lambda td: td.total_seconds()
1307
* 1000)
1799
approval_delay = notifychangeproperty(
1800
dbus.UInt64, "ApprovalDelay",
1801
type_func=lambda td: td.total_seconds() * 1000)
1308
1802
approval_duration = notifychangeproperty(
1309
1803
dbus.UInt64, "ApprovalDuration",
1310
type_func = lambda td: td.total_seconds() * 1000)
1804
type_func=lambda td: td.total_seconds() * 1000)
1311
1805
host = notifychangeproperty(dbus.String, "Host")
1312
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1313
type_func = lambda td:
1314
td.total_seconds() * 1000)
1806
timeout = notifychangeproperty(
1807
dbus.UInt64, "Timeout",
1808
type_func=lambda td: td.total_seconds() * 1000)
1315
1809
extended_timeout = notifychangeproperty(
1316
1810
dbus.UInt64, "ExtendedTimeout",
1317
type_func = lambda td: td.total_seconds() * 1000)
1318
interval = notifychangeproperty(dbus.UInt64,
1319
"Interval",
1320
type_func =
1321
lambda td: td.total_seconds()
1322
* 1000)
1811
type_func=lambda td: td.total_seconds() * 1000)
1812
interval = notifychangeproperty(
1813
dbus.UInt64, "Interval",
1814
type_func=lambda td: td.total_seconds() * 1000)
1323
1815
checker_command = notifychangeproperty(dbus.String, "Checker")
1324
1816
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1325
1817
invalidate_only=True)
1326
1818
1327
1819
del notifychangeproperty
1328
1820
1329
1821
def __del__(self, *args, **kwargs):
1330
1822
try:
1331
1823
self.remove_from_connection()
1334
1826
if hasattr(DBusObjectWithProperties, "__del__"):
1335
1827
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1336
1828
Client.__del__(self, *args, **kwargs)
1337
1338
def checker_callback(self, pid, condition, command,
1339
*args, **kwargs):
1340
self.checker_callback_tag = None
1341
self.checker = None
1342
if os.WIFEXITED(condition):
1343
exitstatus = os.WEXITSTATUS(condition)
1829
1830
def checker_callback(self, source, condition,
1831
connection, command, *args, **kwargs):
1832
ret = Client.checker_callback(self, source, condition,
1833
connection, command, *args,
1834
**kwargs)
1835
exitstatus = self.last_checker_status
1836
if exitstatus >= 0:
1344
1837
# Emit D-Bus signal
1345
1838
self.CheckerCompleted(dbus.Int16(exitstatus),
1346
dbus.Int64(condition),
1839
# This is specific to GNU libC
1840
dbus.Int64(exitstatus << 8),
1347
1841
dbus.String(command))
1348
1842
else:
1349
1843
# Emit D-Bus signal
1350
1844
self.CheckerCompleted(dbus.Int16(-1),
1351
dbus.Int64(condition),
1845
dbus.Int64(
1846
# This is specific to GNU libC
1847
(exitstatus << 8)
1848
| self.last_checker_signal),
1352
1849
dbus.String(command))
1353
1354
return Client.checker_callback(self, pid, condition, command,
1355
*args, **kwargs)
1356
1850
return ret
1851
1357
1852
def start_checker(self, *args, **kwargs):
1358
1853
old_checker_pid = getattr(self.checker, "pid", None)
1359
1854
r = Client.start_checker(self, *args, **kwargs)
1363
1858
# Emit D-Bus signal
1364
1859
self.CheckerStarted(self.current_checker_command)
1365
1860
return r
1366
1861
1367
1862
def _reset_approved(self):
1368
1863
self.approved = None
1369
1864
return False
1370
1865
1371
1866
def approve(self, value=True):
1372
1867
self.approved = value
1373
gobject.timeout_add(int(self.approval_duration.total_seconds()
1374
* 1000), self._reset_approved)
1868
GLib.timeout_add(int(self.approval_duration.total_seconds()
1869
* 1000), self._reset_approved)
1375
1870
self.send_changedstate()
1376
1377
## D-Bus methods, signals & properties
1378
1379
## Interfaces
1380
1381
## Signals
1382
1871
1872
# D-Bus methods, signals & properties
1873
1874
# Interfaces
1875
1876
# Signals
1877
1383
1878
# CheckerCompleted - signal
1384
1879
@dbus.service.signal(_interface, signature="nxs")
1385
1880
def CheckerCompleted(self, exitcode, waitstatus, command):
1386
1881
"D-Bus signal"
1387
1882
pass
1388
1883
1389
1884
# CheckerStarted - signal
1390
1885
@dbus.service.signal(_interface, signature="s")
1391
1886
def CheckerStarted(self, command):
1392
1887
"D-Bus signal"
1393
1888
pass
1394
1889
1395
1890
# PropertyChanged - signal
1396
1891
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1397
1892
@dbus.service.signal(_interface, signature="sv")
1398
1893
def PropertyChanged(self, property, value):
1399
1894
"D-Bus signal"
1400
1895
pass
1401
1896
1402
1897
# GotSecret - signal
1403
1898
@dbus.service.signal(_interface)
1404
1899
def GotSecret(self):
1407
1902
server to mandos-client
1408
1903
"""
1409
1904
pass
1410
1905
1411
1906
# Rejected - signal
1412
1907
@dbus.service.signal(_interface, signature="s")
1413
1908
def Rejected(self, reason):
1414
1909
"D-Bus signal"
1415
1910
pass
1416
1911
1417
1912
# NeedApproval - signal
1418
1913
@dbus.service.signal(_interface, signature="tb")
1419
1914
def NeedApproval(self, timeout, default):
1420
1915
"D-Bus signal"
1421
1916
return self.need_approval()
1422
1423
## Methods
1424
1917
1918
# Methods
1919
1425
1920
# Approve - method
1426
1921
@dbus.service.method(_interface, in_signature="b")
1427
1922
def Approve(self, value):
1428
1923
self.approve(value)
1429
1924
1430
1925
# CheckedOK - method
1431
1926
@dbus.service.method(_interface)
1432
1927
def CheckedOK(self):
1433
1928
self.checked_ok()
1434
1929
1435
1930
# Enable - method
1931
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1436
1932
@dbus.service.method(_interface)
1437
1933
def Enable(self):
1438
1934
"D-Bus method"
1439
1935
self.enable()
1440
1936
1441
1937
# StartChecker - method
1938
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1442
1939
@dbus.service.method(_interface)
1443
1940
def StartChecker(self):
1444
1941
"D-Bus method"
1445
1942
self.start_checker()
1446
1943
1447
1944
# Disable - method
1945
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1448
1946
@dbus.service.method(_interface)
1449
1947
def Disable(self):
1450
1948
"D-Bus method"
1451
1949
self.disable()
1452
1950
1453
1951
# StopChecker - method
1952
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1454
1953
@dbus.service.method(_interface)
1455
1954
def StopChecker(self):
1456
1955
self.stop_checker()
1457
1458
## Properties
1459
1956
1957
# Properties
1958
1460
1959
# ApprovalPending - property
1461
1960
@dbus_service_property(_interface, signature="b", access="read")
1462
1961
def ApprovalPending_dbus_property(self):
1463
1962
return dbus.Boolean(bool(self.approvals_pending))
1464
1963
1465
1964
# ApprovedByDefault - property
1466
@dbus_service_property(_interface, signature="b",
1965
@dbus_service_property(_interface,
1966
signature="b",
1467
1967
access="readwrite")
1468
1968
def ApprovedByDefault_dbus_property(self, value=None):
1469
1969
if value is None: # get
1470
1970
return dbus.Boolean(self.approved_by_default)
1471
1971
self.approved_by_default = bool(value)
1472
1972
1473
1973
# ApprovalDelay - property
1474
@dbus_service_property(_interface, signature="t",
1974
@dbus_service_property(_interface,
1975
signature="t",
1475
1976
access="readwrite")
1476
1977
def ApprovalDelay_dbus_property(self, value=None):
1477
1978
if value is None: # get
1478
1979
return dbus.UInt64(self.approval_delay.total_seconds()
1479
1980
* 1000)
1480
1981
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1481
1982
1482
1983
# ApprovalDuration - property
1483
@dbus_service_property(_interface, signature="t",
1984
@dbus_service_property(_interface,
1985
signature="t",
1484
1986
access="readwrite")
1485
1987
def ApprovalDuration_dbus_property(self, value=None):
1486
1988
if value is None: # get
1487
1989
return dbus.UInt64(self.approval_duration.total_seconds()
1488
1990
* 1000)
1489
1991
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1490
1992
1491
1993
# Name - property
1994
@dbus_annotations(
1995
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1492
1996
@dbus_service_property(_interface, signature="s", access="read")
1493
1997
def Name_dbus_property(self):
1494
1998
return dbus.String(self.name)
1495
1999
1496
2000
# Fingerprint - property
2001
@dbus_annotations(
2002
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1497
2003
@dbus_service_property(_interface, signature="s", access="read")
1498
2004
def Fingerprint_dbus_property(self):
1499
2005
return dbus.String(self.fingerprint)
1500
2006
1501
2007
# Host - property
1502
@dbus_service_property(_interface, signature="s",
2008
@dbus_service_property(_interface,
2009
signature="s",
1503
2010
access="readwrite")
1504
2011
def Host_dbus_property(self, value=None):
1505
2012
if value is None: # get
1506
2013
return dbus.String(self.host)
1507
2014
self.host = str(value)
1508
2015
1509
2016
# Created - property
2017
@dbus_annotations(
2018
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1510
2019
@dbus_service_property(_interface, signature="s", access="read")
1511
2020
def Created_dbus_property(self):
1512
2021
return datetime_to_dbus(self.created)
1513
2022
1514
2023
# LastEnabled - property
1515
2024
@dbus_service_property(_interface, signature="s", access="read")
1516
2025
def LastEnabled_dbus_property(self):
1517
2026
return datetime_to_dbus(self.last_enabled)
1518
2027
1519
2028
# Enabled - property
1520
@dbus_service_property(_interface, signature="b",
2029
@dbus_service_property(_interface,
2030
signature="b",
1521
2031
access="readwrite")
1522
2032
def Enabled_dbus_property(self, value=None):
1523
2033
if value is None: # get
1526
2036
self.enable()
1527
2037
else:
1528
2038
self.disable()
1529
2039
1530
2040
# LastCheckedOK - property
1531
@dbus_service_property(_interface, signature="s",
2041
@dbus_service_property(_interface,
2042
signature="s",
1532
2043
access="readwrite")
1533
2044
def LastCheckedOK_dbus_property(self, value=None):
1534
2045
if value is not None:
1535
2046
self.checked_ok()
1536
2047
return
1537
2048
return datetime_to_dbus(self.last_checked_ok)
1538
2049
1539
2050
# LastCheckerStatus - property
1540
@dbus_service_property(_interface, signature="n",
1541
access="read")
2051
@dbus_service_property(_interface, signature="n", access="read")
1542
2052
def LastCheckerStatus_dbus_property(self):
1543
2053
return dbus.Int16(self.last_checker_status)
1544
2054
1545
2055
# Expires - property
1546
2056
@dbus_service_property(_interface, signature="s", access="read")
1547
2057
def Expires_dbus_property(self):
1548
2058
return datetime_to_dbus(self.expires)
1549
2059
1550
2060
# LastApprovalRequest - property
1551
2061
@dbus_service_property(_interface, signature="s", access="read")
1552
2062
def LastApprovalRequest_dbus_property(self):
1553
2063
return datetime_to_dbus(self.last_approval_request)
1554
2064
1555
2065
# Timeout - property
1556
@dbus_service_property(_interface, signature="t",
2066
@dbus_service_property(_interface,
2067
signature="t",
1557
2068
access="readwrite")
1558
2069
def Timeout_dbus_property(self, value=None):
1559
2070
if value is None: # get
1571
2082
if (getattr(self, "disable_initiator_tag", None)
1572
2083
is None):
1573
2084
return
1574
gobject.source_remove(self.disable_initiator_tag)
1575
self.disable_initiator_tag = (
1576
gobject.timeout_add(
1577
int((self.expires - now).total_seconds()
1578
* 1000), self.disable))
1579
2085
GLib.source_remove(self.disable_initiator_tag)
2086
self.disable_initiator_tag = GLib.timeout_add(
2087
int((self.expires - now).total_seconds() * 1000),
2088
self.disable)
2089
1580
2090
# ExtendedTimeout - property
1581
@dbus_service_property(_interface, signature="t",
2091
@dbus_service_property(_interface,
2092
signature="t",
1582
2093
access="readwrite")
1583
2094
def ExtendedTimeout_dbus_property(self, value=None):
1584
2095
if value is None: # get
1585
2096
return dbus.UInt64(self.extended_timeout.total_seconds()
1586
2097
* 1000)
1587
2098
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1588
2099
1589
2100
# Interval - property
1590
@dbus_service_property(_interface, signature="t",
2101
@dbus_service_property(_interface,
2102
signature="t",
1591
2103
access="readwrite")
1592
2104
def Interval_dbus_property(self, value=None):
1593
2105
if value is None: # get
1597
2109
return
1598
2110
if self.enabled:
1599
2111
# Reschedule checker run
1600
gobject.source_remove(self.checker_initiator_tag)
1601
self.checker_initiator_tag = (gobject.timeout_add
1602
(value, self.start_checker))
1603
self.start_checker() # Start one now, too
1604
2112
GLib.source_remove(self.checker_initiator_tag)
2113
self.checker_initiator_tag = GLib.timeout_add(
2114
value, self.start_checker)
2115
self.start_checker() # Start one now, too
2116
1605
2117
# Checker - property
1606
@dbus_service_property(_interface, signature="s",
2118
@dbus_service_property(_interface,
2119
signature="s",
1607
2120
access="readwrite")
1608
2121
def Checker_dbus_property(self, value=None):
1609
2122
if value is None: # get
1610
2123
return dbus.String(self.checker_command)
1611
2124
self.checker_command = str(value)
1612
2125
1613
2126
# CheckerRunning - property
1614
@dbus_service_property(_interface, signature="b",
2127
@dbus_service_property(_interface,
2128
signature="b",
1615
2129
access="readwrite")
1616
2130
def CheckerRunning_dbus_property(self, value=None):
1617
2131
if value is None: # get
1620
2134
self.start_checker()
1621
2135
else:
1622
2136
self.stop_checker()
1623
2137
1624
2138
# ObjectPath - property
2139
@dbus_annotations(
2140
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2141
"org.freedesktop.DBus.Deprecated": "true"})
1625
2142
@dbus_service_property(_interface, signature="o", access="read")
1626
2143
def ObjectPath_dbus_property(self):
1627
return self.dbus_object_path # is already a dbus.ObjectPath
1628
2144
return self.dbus_object_path # is already a dbus.ObjectPath
2145
1629
2146
# Secret = property
1630
@dbus_service_property(_interface, signature="ay",
1631
access="write", byte_arrays=True)
2147
@dbus_annotations(
2148
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2149
"invalidates"})
2150
@dbus_service_property(_interface,
2151
signature="ay",
2152
access="write",
2153
byte_arrays=True)
1632
2154
def Secret_dbus_property(self, value):
1633
2155
self.secret = bytes(value)
1634
2156
1635
2157
del _interface
1636
2158
1637
2159
1640
2162
self._pipe = child_pipe
1641
2163
self._pipe.send(('init', fpr, address))
1642
2164
if not self._pipe.recv():
1643
raise KeyError()
1644
2165
raise KeyError(fpr)
2166
1645
2167
def __getattribute__(self, name):
1646
2168
if name == '_pipe':
1647
2169
return super(ProxyClient, self).__getattribute__(name)
1650
2172
if data[0] == 'data':
1651
2173
return data[1]
1652
2174
if data[0] == 'function':
2175
1653
2176
def func(*args, **kwargs):
1654
2177
self._pipe.send(('funcall', name, args, kwargs))
1655
2178
return self._pipe.recv()[1]
2179
1656
2180
return func
1657
2181
1658
2182
def __setattr__(self, name, value):
1659
2183
if name == '_pipe':
1660
2184
return super(ProxyClient, self).__setattr__(name, value)
1663
2187
1664
2188
class ClientHandler(socketserver.BaseRequestHandler, object):
1665
2189
"""A class to handle client connections.
1666
2190
1667
2191
Instantiated once for each connection to handle it.
1668
2192
Note: This will run in its own forked process."""
1669
2193
1670
2194
def handle(self):
1671
2195
with contextlib.closing(self.server.child_pipe) as child_pipe:
1672
2196
logger.info("TCP connection from: %s",
1673
2197
str(self.client_address))
1674
2198
logger.debug("Pipe FD: %d",
1675
2199
self.server.child_pipe.fileno())
1676
1677
session = (gnutls.connection
1678
.ClientSession(self.request,
1679
gnutls.connection
1680
.X509Credentials()))
1681
1682
# Note: gnutls.connection.X509Credentials is really a
1683
# generic GnuTLS certificate credentials object so long as
1684
# no X.509 keys are added to it. Therefore, we can use it
1685
# here despite using OpenPGP certificates.
1686
1687
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1688
# "+AES-256-CBC", "+SHA1",
1689
# "+COMP-NULL", "+CTYPE-OPENPGP",
1690
# "+DHE-DSS"))
2200
2201
session = gnutls.ClientSession(self.request)
2202
2203
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2204
# "+AES-256-CBC", "+SHA1",
2205
# "+COMP-NULL", "+CTYPE-OPENPGP",
2206
# "+DHE-DSS"))
1691
2207
# Use a fallback default, since this MUST be set.
1692
2208
priority = self.server.gnutls_priority
1693
2209
if priority is None:
1694
2210
priority = "NORMAL"
1695
(gnutls.library.functions
1696
.gnutls_priority_set_direct(session._c_object,
1697
priority, None))
1698
2211
gnutls.priority_set_direct(session._c_object,
2212
priority.encode("utf-8"),
2213
None)
2214
1699
2215
# Start communication using the Mandos protocol
1700
2216
# Get protocol number
1701
2217
line = self.request.makefile().readline()
1706
2222
except (ValueError, IndexError, RuntimeError) as error:
1707
2223
logger.error("Unknown protocol version: %s", error)
1708
2224
return
1709
2225
1710
2226
# Start GnuTLS connection
1711
2227
try:
1712
2228
session.handshake()
1713
except gnutls.errors.GNUTLSError as error:
2229
except gnutls.Error as error:
1714
2230
logger.warning("Handshake failed: %s", error)
1715
2231
# Do not run session.bye() here: the session is not
1716
2232
# established. Just abandon the request.
1717
2233
return
1718
2234
logger.debug("Handshake succeeded")
1719
2235
1720
2236
approval_required = False
1721
2237
try:
1722
2238
try:
1723
fpr = self.fingerprint(self.peer_certificate
1724
(session))
1725
except (TypeError,
1726
gnutls.errors.GNUTLSError) as error:
2239
fpr = self.fingerprint(
2240
self.peer_certificate(session))
2241
except (TypeError, gnutls.Error) as error:
1727
2242
logger.warning("Bad certificate: %s", error)
1728
2243
return
1729
2244
logger.debug("Fingerprint: %s", fpr)
1730
2245
1731
2246
try:
1732
2247
client = ProxyClient(child_pipe, fpr,
1733
2248
self.client_address)
1734
2249
except KeyError:
1735
2250
return
1736
2251
1737
2252
if client.approval_delay:
1738
2253
delay = client.approval_delay
1739
2254
client.approvals_pending += 1
1740
2255
approval_required = True
1741
2256
1742
2257
while True:
1743
2258
if not client.enabled:
1744
2259
logger.info("Client %s is disabled",
1745
client.name)
2260
client.name)
1746
2261
if self.server.use_dbus:
1747
2262
# Emit D-Bus signal
1748
2263
client.Rejected("Disabled")
1749
2264
return
1750
2265
1751
2266
if client.approved or not client.approval_delay:
1752
#We are approved or approval is disabled
2267
# We are approved or approval is disabled
1753
2268
break
1754
2269
elif client.approved is None:
1755
2270
logger.info("Client %s needs approval",
1766
2281
# Emit D-Bus signal
1767
2282
client.Rejected("Denied")
1768
2283
return
1769
1770
#wait until timeout or approved
2284
2285
# wait until timeout or approved
1771
2286
time = datetime.datetime.now()
1772
2287
client.changedstate.acquire()
1773
2288
client.changedstate.wait(delay.total_seconds())
1786
2301
break
1787
2302
else:
1788
2303
delay -= time2 - time
1789
1790
sent_size = 0
1791
while sent_size < len(client.secret):
1792
try:
1793
sent = session.send(client.secret[sent_size:])
1794
except gnutls.errors.GNUTLSError as error:
1795
logger.warning("gnutls send failed",
1796
exc_info=error)
1797
return
1798
logger.debug("Sent: %d, remaining: %d",
1799
sent, len(client.secret)
1800
- (sent_size + sent))
1801
sent_size += sent
1802
2304
2305
try:
2306
session.send(client.secret)
2307
except gnutls.Error as error:
2308
logger.warning("gnutls send failed",
2309
exc_info=error)
2310
return
2311
1803
2312
logger.info("Sending secret to %s", client.name)
1804
2313
# bump the timeout using extended_timeout
1805
2314
client.bump_timeout(client.extended_timeout)
1806
2315
if self.server.use_dbus:
1807
2316
# Emit D-Bus signal
1808
2317
client.GotSecret()
1809
2318
1810
2319
finally:
1811
2320
if approval_required:
1812
2321
client.approvals_pending -= 1
1813
2322
try:
1814
2323
session.bye()
1815
except gnutls.errors.GNUTLSError as error:
2324
except gnutls.Error as error:
1816
2325
logger.warning("GnuTLS bye failed",
1817
2326
exc_info=error)
1818
2327
1819
2328
@staticmethod
1820
2329
def peer_certificate(session):
1821
2330
"Return the peer's OpenPGP certificate as a bytestring"
1822
2331
# If not an OpenPGP certificate...
1823
if (gnutls.library.functions
1824
.gnutls_certificate_type_get(session._c_object)
1825
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1826
# ...do the normal thing
1827
return session.peer_certificate
2332
if (gnutls.certificate_type_get(session._c_object)
2333
!= gnutls.CRT_OPENPGP):
2334
# ...return invalid data
2335
return b""
1828
2336
list_size = ctypes.c_uint(1)
1829
cert_list = (gnutls.library.functions
1830
.gnutls_certificate_get_peers
2337
cert_list = (gnutls.certificate_get_peers
1831
2338
(session._c_object, ctypes.byref(list_size)))
1832
2339
if not bool(cert_list) and list_size.value != 0:
1833
raise gnutls.errors.GNUTLSError("error getting peer"
1834
" certificate")
2340
raise gnutls.Error("error getting peer certificate")
1835
2341
if list_size.value == 0:
1836
2342
return None
1837
2343
cert = cert_list[0]
1838
2344
return ctypes.string_at(cert.data, cert.size)
1839
2345
1840
2346
@staticmethod
1841
2347
def fingerprint(openpgp):
1842
2348
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1843
2349
# New GnuTLS "datum" with the OpenPGP public key
1844
datum = (gnutls.library.types
1845
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1846
ctypes.POINTER
1847
(ctypes.c_ubyte)),
1848
ctypes.c_uint(len(openpgp))))
2350
datum = gnutls.datum_t(
2351
ctypes.cast(ctypes.c_char_p(openpgp),
2352
ctypes.POINTER(ctypes.c_ubyte)),
2353
ctypes.c_uint(len(openpgp)))
1849
2354
# New empty GnuTLS certificate
1850
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1851
(gnutls.library.functions
1852
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2355
crt = gnutls.openpgp_crt_t()
2356
gnutls.openpgp_crt_init(ctypes.byref(crt))
1853
2357
# Import the OpenPGP public key into the certificate
1854
(gnutls.library.functions
1855
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1856
gnutls.library.constants
1857
.GNUTLS_OPENPGP_FMT_RAW))
2358
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2359
gnutls.OPENPGP_FMT_RAW)
1858
2360
# Verify the self signature in the key
1859
2361
crtverify = ctypes.c_uint()
1860
(gnutls.library.functions
1861
.gnutls_openpgp_crt_verify_self(crt, 0,
1862
ctypes.byref(crtverify)))
2362
gnutls.openpgp_crt_verify_self(crt, 0,
2363
ctypes.byref(crtverify))
1863
2364
if crtverify.value != 0:
1864
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1865
raise (gnutls.errors.CertificateSecurityError
1866
("Verify failed"))
2365
gnutls.openpgp_crt_deinit(crt)
2366
raise gnutls.CertificateSecurityError("Verify failed")
1867
2367
# New buffer for the fingerprint
1868
2368
buf = ctypes.create_string_buffer(20)
1869
2369
buf_len = ctypes.c_size_t()
1870
2370
# Get the fingerprint from the certificate into the buffer
1871
(gnutls.library.functions
1872
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1873
ctypes.byref(buf_len)))
2371
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2372
ctypes.byref(buf_len))
1874
2373
# Deinit the certificate
1875
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2374
gnutls.openpgp_crt_deinit(crt)
1876
2375
# Convert the buffer to a Python bytestring
1877
2376
fpr = ctypes.string_at(buf, buf_len.value)
1878
2377
# Convert the bytestring to hexadecimal notation
1882
2381
1883
2382
class MultiprocessingMixIn(object):
1884
2383
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2384
1885
2385
def sub_process_main(self, request, address):
1886
2386
try:
1887
2387
self.finish_request(request, address)
1888
2388
except Exception:
1889
2389
self.handle_error(request, address)
1890
2390
self.close_request(request)
1891
2391
1892
2392
def process_request(self, request, address):
1893
2393
"""Start a new process to process the request."""
1894
proc = multiprocessing.Process(target = self.sub_process_main,
1895
args = (request, address))
2394
proc = multiprocessing.Process(target=self.sub_process_main,
2395
args=(request, address))
1896
2396
proc.start()
1897
2397
return proc
1898
2398
1899
2399
1900
2400
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1901
2401
""" adds a pipe to the MixIn """
2402
1902
2403
def process_request(self, request, client_address):
1903
2404
"""Overrides and wraps the original process_request().
1904
2405
1905
2406
This function creates a new pipe in self.pipe
1906
2407
"""
1907
2408
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1908
2409
1909
2410
proc = MultiprocessingMixIn.process_request(self, request,
1910
2411
client_address)
1911
2412
self.child_pipe.close()
1912
2413
self.add_pipe(parent_pipe, proc)
1913
2414
1914
2415
def add_pipe(self, parent_pipe, proc):
1915
2416
"""Dummy function; override as necessary"""
1916
2417
raise NotImplementedError()
1919
2420
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1920
2421
socketserver.TCPServer, object):
1921
2422
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1922
2423
1923
2424
Attributes:
1924
2425
enabled: Boolean; whether this server is activated yet
1925
2426
interface: None or a network interface name (string)
1926
2427
use_ipv6: Boolean; to use IPv6 or not
1927
2428
"""
2429
1928
2430
def __init__(self, server_address, RequestHandlerClass,
1929
interface=None, use_ipv6=True, socketfd=None):
2431
interface=None,
2432
use_ipv6=True,
2433
socketfd=None):
1930
2434
"""If socketfd is set, use that file descriptor instead of
1931
2435
creating a new one with socket.socket().
1932
2436
"""
1938
2442
self.socketfd = socketfd
1939
2443
# Save the original socket.socket() function
1940
2444
self.socket_socket = socket.socket
2445
1941
2446
# To implement --socket, we monkey patch socket.socket.
1942
#
2447
#
1943
2448
# (When socketserver.TCPServer is a new-style class, we
1944
2449
# could make self.socket into a property instead of monkey
1945
2450
# patching socket.socket.)
1946
#
2451
#
1947
2452
# Create a one-time-only replacement for socket.socket()
1948
2453
@functools.wraps(socket.socket)
1949
2454
def socket_wrapper(*args, **kwargs):
1961
2466
# socket_wrapper(), if socketfd was set.
1962
2467
socketserver.TCPServer.__init__(self, server_address,
1963
2468
RequestHandlerClass)
1964
2469
1965
2470
def server_bind(self):
1966
2471
"""This overrides the normal server_bind() function
1967
2472
to bind to an interface if one was specified, and also NOT to
1968
2473
bind to an address or port if they were not specified."""
2474
global SO_BINDTODEVICE
1969
2475
if self.interface is not None:
1970
2476
if SO_BINDTODEVICE is None:
1971
logger.error("SO_BINDTODEVICE does not exist;"
1972
" cannot bind to interface %s",
1973
self.interface)
1974
else:
1975
try:
1976
self.socket.setsockopt(socket.SOL_SOCKET,
1977
SO_BINDTODEVICE,
1978
(self.interface + "\0")
1979
.encode("utf-8"))
1980
except socket.error as error:
1981
if error.errno == errno.EPERM:
1982
logger.error("No permission to bind to"
1983
" interface %s", self.interface)
1984
elif error.errno == errno.ENOPROTOOPT:
1985
logger.error("SO_BINDTODEVICE not available;"
1986
" cannot bind to interface %s",
1987
self.interface)
1988
elif error.errno == errno.ENODEV:
1989
logger.error("Interface %s does not exist,"
1990
" cannot bind", self.interface)
1991
else:
1992
raise
2477
# Fall back to a hard-coded value which seems to be
2478
# common enough.
2479
logger.warning("SO_BINDTODEVICE not found, trying 25")
2480
SO_BINDTODEVICE = 25
2481
try:
2482
self.socket.setsockopt(
2483
socket.SOL_SOCKET, SO_BINDTODEVICE,
2484
(self.interface + "\0").encode("utf-8"))
2485
except socket.error as error:
2486
if error.errno == errno.EPERM:
2487
logger.error("No permission to bind to"
2488
" interface %s", self.interface)
2489
elif error.errno == errno.ENOPROTOOPT:
2490
logger.error("SO_BINDTODEVICE not available;"
2491
" cannot bind to interface %s",
2492
self.interface)
2493
elif error.errno == errno.ENODEV:
2494
logger.error("Interface %s does not exist,"
2495
" cannot bind", self.interface)
2496
else:
2497
raise
1993
2498
# Only bind(2) the socket if we really need to.
1994
2499
if self.server_address[0] or self.server_address[1]:
1995
2500
if not self.server_address[0]:
1996
2501
if self.address_family == socket.AF_INET6:
1997
any_address = "::" # in6addr_any
2502
any_address = "::" # in6addr_any
1998
2503
else:
1999
any_address = "0.0.0.0" # INADDR_ANY
2504
any_address = "0.0.0.0" # INADDR_ANY
2000
2505
self.server_address = (any_address,
2001
2506
self.server_address[1])
2002
2507
elif not self.server_address[1]:
2003
self.server_address = (self.server_address[0],
2004
0)
2508
self.server_address = (self.server_address[0], 0)
2005
2509
# if self.interface:
2006
2510
# self.server_address = (self.server_address[0],
2007
2511
# 0, # port
2013
2517
2014
2518
class MandosServer(IPv6_TCPServer):
2015
2519
"""Mandos server.
2016
2520
2017
2521
Attributes:
2018
2522
clients: set of Client objects
2019
2523
gnutls_priority GnuTLS priority string
2020
2524
use_dbus: Boolean; to emit D-Bus signals or not
2021
2022
Assumes a gobject.MainLoop event loop.
2525
2526
Assumes a GLib.MainLoop event loop.
2023
2527
"""
2528
2024
2529
def __init__(self, server_address, RequestHandlerClass,
2025
interface=None, use_ipv6=True, clients=None,
2026
gnutls_priority=None, use_dbus=True, socketfd=None):
2530
interface=None,
2531
use_ipv6=True,
2532
clients=None,
2533
gnutls_priority=None,
2534
use_dbus=True,
2535
socketfd=None):
2027
2536
self.enabled = False
2028
2537
self.clients = clients
2029
2538
if self.clients is None:
2032
2541
self.gnutls_priority = gnutls_priority
2033
2542
IPv6_TCPServer.__init__(self, server_address,
2034
2543
RequestHandlerClass,
2035
interface = interface,
2036
use_ipv6 = use_ipv6,
2037
socketfd = socketfd)
2544
interface=interface,
2545
use_ipv6=use_ipv6,
2546
socketfd=socketfd)
2547
2038
2548
def server_activate(self):
2039
2549
if self.enabled:
2040
2550
return socketserver.TCPServer.server_activate(self)
2041
2551
2042
2552
def enable(self):
2043
2553
self.enabled = True
2044
2554
2045
2555
def add_pipe(self, parent_pipe, proc):
2046
2556
# Call "handle_ipc" for both data and EOF events
2047
gobject.io_add_watch(parent_pipe.fileno(),
2048
gobject.IO_IN | gobject.IO_HUP,
2049
functools.partial(self.handle_ipc,
2050
parent_pipe =
2051
parent_pipe,
2052
proc = proc))
2053
2054
def handle_ipc(self, source, condition, parent_pipe=None,
2055
proc = None, client_object=None):
2557
GLib.io_add_watch(
2558
parent_pipe.fileno(),
2559
GLib.IO_IN | GLib.IO_HUP,
2560
functools.partial(self.handle_ipc,
2561
parent_pipe=parent_pipe,
2562
proc=proc))
2563
2564
def handle_ipc(self, source, condition,
2565
parent_pipe=None,
2566
proc=None,
2567
client_object=None):
2056
2568
# error, or the other end of multiprocessing.Pipe has closed
2057
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2569
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2058
2570
# Wait for other process to exit
2059
2571
proc.join()
2060
2572
return False
2061
2573
2062
2574
# Read a request from the child
2063
2575
request = parent_pipe.recv()
2064
2576
command = request[0]
2065
2577
2066
2578
if command == 'init':
2067
2579
fpr = request[1]
2068
2580
address = request[2]
2069
2070
for c in self.clients.itervalues():
2581
2582
for c in self.clients.values():
2071
2583
if c.fingerprint == fpr:
2072
2584
client = c
2073
2585
break
2080
2592
address[0])
2081
2593
parent_pipe.send(False)
2082
2594
return False
2083
2084
gobject.io_add_watch(parent_pipe.fileno(),
2085
gobject.IO_IN | gobject.IO_HUP,
2086
functools.partial(self.handle_ipc,
2087
parent_pipe =
2088
parent_pipe,
2089
proc = proc,
2090
client_object =
2091
client))
2595
2596
GLib.io_add_watch(
2597
parent_pipe.fileno(),
2598
GLib.IO_IN | GLib.IO_HUP,
2599
functools.partial(self.handle_ipc,
2600
parent_pipe=parent_pipe,
2601
proc=proc,
2602
client_object=client))
2092
2603
parent_pipe.send(True)
2093
2604
# remove the old hook in favor of the new above hook on
2094
2605
# same fileno
2097
2608
funcname = request[1]
2098
2609
args = request[2]
2099
2610
kwargs = request[3]
2100
2611
2101
2612
parent_pipe.send(('data', getattr(client_object,
2102
2613
funcname)(*args,
2103
**kwargs)))
2104
2614
**kwargs)))
2615
2105
2616
if command == 'getattr':
2106
2617
attrname = request[1]
2107
if callable(client_object.__getattribute__(attrname)):
2108
parent_pipe.send(('function',))
2618
if isinstance(client_object.__getattribute__(attrname),
2619
collections.Callable):
2620
parent_pipe.send(('function', ))
2109
2621
else:
2110
parent_pipe.send(('data', client_object
2111
.__getattribute__(attrname)))
2112
2622
parent_pipe.send((
2623
'data', client_object.__getattribute__(attrname)))
2624
2113
2625
if command == 'setattr':
2114
2626
attrname = request[1]
2115
2627
value = request[2]
2116
2628
setattr(client_object, attrname, value)
2117
2629
2118
2630
return True
2119
2631
2120
2632
2121
2633
def rfc3339_duration_to_delta(duration):
2122
2634
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2123
2635
2124
2636
>>> rfc3339_duration_to_delta("P7D")
2125
2637
datetime.timedelta(7)
2126
2638
>>> rfc3339_duration_to_delta("PT60S")
2136
2648
>>> rfc3339_duration_to_delta("P1DT3M20S")
2137
2649
datetime.timedelta(1, 200)
2138
2650
"""
2139
2651
2140
2652
# Parsing an RFC 3339 duration with regular expressions is not
2141
2653
# possible - there would have to be multiple places for the same
2142
2654
# values, like seconds. The current code, while more esoteric, is
2143
2655
# cleaner without depending on a parsing library. If Python had a
2144
2656
# built-in library for parsing we would use it, but we'd like to
2145
2657
# avoid excessive use of external libraries.
2146
2658
2147
2659
# New type for defining tokens, syntax, and semantics all-in-one
2148
Token = collections.namedtuple("Token",
2149
("regexp", # To match token; if
2150
# "value" is not None,
2151
# must have a "group"
2152
# containing digits
2153
"value", # datetime.timedelta or
2154
# None
2155
"followers")) # Tokens valid after
2156
# this token
2660
Token = collections.namedtuple("Token", (
2661
"regexp", # To match token; if "value" is not None, must have
2662
# a "group" containing digits
2663
"value", # datetime.timedelta or None
2664
"followers")) # Tokens valid after this token
2157
2665
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2158
2666
# the "duration" ABNF definition in RFC 3339, Appendix A.
2159
2667
token_end = Token(re.compile(r"$"), None, frozenset())
2160
2668
token_second = Token(re.compile(r"(\d+)S"),
2161
2669
datetime.timedelta(seconds=1),
2162
frozenset((token_end,)))
2670
frozenset((token_end, )))
2163
2671
token_minute = Token(re.compile(r"(\d+)M"),
2164
2672
datetime.timedelta(minutes=1),
2165
2673
frozenset((token_second, token_end)))
2181
2689
frozenset((token_month, token_end)))
2182
2690
token_week = Token(re.compile(r"(\d+)W"),
2183
2691
datetime.timedelta(weeks=1),
2184
frozenset((token_end,)))
2692
frozenset((token_end, )))
2185
2693
token_duration = Token(re.compile(r"P"), None,
2186
2694
frozenset((token_year, token_month,
2187
2695
token_day, token_time,
2188
2696
token_week)))
2189
# Define starting values
2190
value = datetime.timedelta() # Value so far
2697
# Define starting values:
2698
# Value so far
2699
value = datetime.timedelta()
2191
2700
found_token = None
2192
followers = frozenset((token_duration,)) # Following valid tokens
2193
s = duration # String left to parse
2701
# Following valid tokens
2702
followers = frozenset((token_duration, ))
2703
# String left to parse
2704
s = duration
2194
2705
# Loop until end token is found
2195
2706
while found_token is not token_end:
2196
2707
# Search for any currently valid tokens
2212
2723
break
2213
2724
else:
2214
2725
# No currently valid tokens were found
2215
raise ValueError("Invalid RFC 3339 duration")
2726
raise ValueError("Invalid RFC 3339 duration: {!r}"
2727
.format(duration))
2216
2728
# End token found
2217
2729
return value
2218
2730
2219
2731
2220
2732
def string_to_delta(interval):
2221
2733
"""Parse a string and return a datetime.timedelta
2222
2734
2223
2735
>>> string_to_delta('7d')
2224
2736
datetime.timedelta(7)
2225
2737
>>> string_to_delta('60s')
2233
2745
>>> string_to_delta('5m 30s')
2234
2746
datetime.timedelta(0, 330)
2235
2747
"""
2236
2748
2237
2749
try:
2238
2750
return rfc3339_duration_to_delta(interval)
2239
2751
except ValueError:
2240
2752
pass
2241
2753
2242
2754
timevalue = datetime.timedelta(0)
2243
2755
for s in interval.split():
2244
2756
try:
2255
2767
elif suffix == "w":
2256
2768
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2257
2769
else:
2258
raise ValueError("Unknown suffix {!r}"
2259
.format(suffix))
2770
raise ValueError("Unknown suffix {!r}".format(suffix))
2260
2771
except IndexError as e:
2261
2772
raise ValueError(*(e.args))
2262
2773
timevalue += delta
2263
2774
return timevalue
2264
2775
2265
2776
2266
def daemon(nochdir = False, noclose = False):
2777
def daemon(nochdir=False, noclose=False):
2267
2778
"""See daemon(3). Standard BSD Unix function.
2268
2779
2269
2780
This should really exist as os.daemon, but it doesn't (yet)."""
2270
2781
if os.fork():
2271
2782
sys.exit()
2278
2789
# Close all standard open file descriptors
2279
2790
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2280
2791
if not stat.S_ISCHR(os.fstat(null).st_mode):
2281
raise OSError(errno.ENODEV, "{} not a character device"
2792
raise OSError(errno.ENODEV,
2793
"{} not a character device"
2282
2794
.format(os.devnull))
2283
2795
os.dup2(null, sys.stdin.fileno())
2284
2796
os.dup2(null, sys.stdout.fileno())
2288
2800
2289
2801
2290
2802
def main():
2291
2803
2292
2804
##################################################################
2293
2805
# Parsing of options, both command line and config file
2294
2806
2295
2807
parser = argparse.ArgumentParser()
2296
2808
parser.add_argument("-v", "--version", action="version",
2297
version = "%(prog)s {}".format(version),
2809
version="%(prog)s {}".format(version),
2298
2810
help="show version number and exit")
2299
2811
parser.add_argument("-i", "--interface", metavar="IF",
2300
2812
help="Bind to interface IF")
2336
2848
parser.add_argument("--no-zeroconf", action="store_false",
2337
2849
dest="zeroconf", help="Do not use Zeroconf",
2338
2850
default=None)
2339
2851
2340
2852
options = parser.parse_args()
2341
2853
2342
2854
if options.check:
2343
2855
import doctest
2344
2856
fail_count, test_count = doctest.testmod()
2345
2857
sys.exit(os.EX_OK if fail_count == 0 else 1)
2346
2858
2347
2859
# Default values for config file for server-global settings
2348
server_defaults = { "interface": "",
2349
"address": "",
2350
"port": "",
2351
"debug": "False",
2352
"priority":
2353
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:+SIGN-RSA-SHA224:+SIGN-RSA-RMD160",
2354
"servicename": "Mandos",
2355
"use_dbus": "True",
2356
"use_ipv6": "True",
2357
"debuglevel": "",
2358
"restore": "True",
2359
"socket": "",
2360
"statedir": "/var/lib/mandos",
2361
"foreground": "False",
2362
"zeroconf": "True",
2363
}
2364
2860
server_defaults = {"interface": "",
2861
"address": "",
2862
"port": "",
2863
"debug": "False",
2864
"priority":
2865
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2866
":+SIGN-DSA-SHA256",
2867
"servicename": "Mandos",
2868
"use_dbus": "True",
2869
"use_ipv6": "True",
2870
"debuglevel": "",
2871
"restore": "True",
2872
"socket": "",
2873
"statedir": "/var/lib/mandos",
2874
"foreground": "False",
2875
"zeroconf": "True",
2876
}
2877
2365
2878
# Parse config file for server-global settings
2366
2879
server_config = configparser.SafeConfigParser(server_defaults)
2367
2880
del server_defaults
2368
server_config.read(os.path.join(options.configdir,
2369
"mandos.conf"))
2881
server_config.read(os.path.join(options.configdir, "mandos.conf"))
2370
2882
# Convert the SafeConfigParser object to a dict
2371
2883
server_settings = server_config.defaults()
2372
2884
# Use the appropriate methods on the non-string config options
2386
2898
server_settings["socket"] = os.dup(server_settings
2387
2899
["socket"])
2388
2900
del server_config
2389
2901
2390
2902
# Override the settings from the config file with command line
2391
2903
# options, if set.
2392
2904
for option in ("interface", "address", "port", "debug",
2393
"priority", "servicename", "configdir",
2394
"use_dbus", "use_ipv6", "debuglevel", "restore",
2395
"statedir", "socket", "foreground", "zeroconf"):
2905
"priority", "servicename", "configdir", "use_dbus",
2906
"use_ipv6", "debuglevel", "restore", "statedir",
2907
"socket", "foreground", "zeroconf"):
2396
2908
value = getattr(options, option)
2397
2909
if value is not None:
2398
2910
server_settings[option] = value
2410
2922
if server_settings["debug"]:
2411
2923
server_settings["foreground"] = True
2412
2924
# Now we have our good server settings in "server_settings"
2413
2925
2414
2926
##################################################################
2415
2416
if (not server_settings["zeroconf"] and
2417
not (server_settings["port"]
2418
or server_settings["socket"] != "")):
2419
parser.error("Needs port or socket to work without"
2420
" Zeroconf")
2421
2927
2928
if (not server_settings["zeroconf"]
2929
and not (server_settings["port"]
2930
or server_settings["socket"] != "")):
2931
parser.error("Needs port or socket to work without Zeroconf")
2932
2422
2933
# For convenience
2423
2934
debug = server_settings["debug"]
2424
2935
debuglevel = server_settings["debuglevel"]
2428
2939
stored_state_file)
2429
2940
foreground = server_settings["foreground"]
2430
2941
zeroconf = server_settings["zeroconf"]
2431
2942
2432
2943
if debug:
2433
2944
initlogger(debug, logging.DEBUG)
2434
2945
else:
2437
2948
else:
2438
2949
level = getattr(logging, debuglevel.upper())
2439
2950
initlogger(debug, level)
2440
2951
2441
2952
if server_settings["servicename"] != "Mandos":
2442
syslogger.setFormatter(logging.Formatter
2443
('Mandos ({}) [%(process)d]:'
2444
' %(levelname)s: %(message)s'
2445
.format(server_settings
2446
["servicename"])))
2447
2953
syslogger.setFormatter(
2954
logging.Formatter('Mandos ({}) [%(process)d]:'
2955
' %(levelname)s: %(message)s'.format(
2956
server_settings["servicename"])))
2957
2448
2958
# Parse config file with clients
2449
2959
client_config = configparser.SafeConfigParser(Client
2450
2960
.client_defaults)
2451
2961
client_config.read(os.path.join(server_settings["configdir"],
2452
2962
"clients.conf"))
2453
2963
2454
2964
global mandos_dbus_service
2455
2965
mandos_dbus_service = None
2456
2966
2457
2967
socketfd = None
2458
2968
if server_settings["socket"] != "":
2459
2969
socketfd = server_settings["socket"]
2460
tcp_server = MandosServer((server_settings["address"],
2461
server_settings["port"]),
2462
ClientHandler,
2463
interface=(server_settings["interface"]
2464
or None),
2465
use_ipv6=use_ipv6,
2466
gnutls_priority=
2467
server_settings["priority"],
2468
use_dbus=use_dbus,
2469
socketfd=socketfd)
2970
tcp_server = MandosServer(
2971
(server_settings["address"], server_settings["port"]),
2972
ClientHandler,
2973
interface=(server_settings["interface"] or None),
2974
use_ipv6=use_ipv6,
2975
gnutls_priority=server_settings["priority"],
2976
use_dbus=use_dbus,
2977
socketfd=socketfd)
2470
2978
if not foreground:
2471
2979
pidfilename = "/run/mandos.pid"
2472
2980
if not os.path.isdir("/run/."):
2473
2981
pidfilename = "/var/run/mandos.pid"
2474
2982
pidfile = None
2475
2983
try:
2476
pidfile = open(pidfilename, "w")
2984
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2477
2985
except IOError as e:
2478
2986
logger.error("Could not open file %r", pidfilename,
2479
2987
exc_info=e)
2480
2481
for name in ("_mandos", "mandos", "nobody"):
2988
2989
for name, group in (("_mandos", "_mandos"),
2990
("mandos", "mandos"),
2991
("nobody", "nogroup")):
2482
2992
try:
2483
2993
uid = pwd.getpwnam(name).pw_uid
2484
gid = pwd.getpwnam(name).pw_gid
2994
gid = pwd.getpwnam(group).pw_gid
2485
2995
break
2486
2996
except KeyError:
2487
2997
continue
2491
3001
try:
2492
3002
os.setgid(gid)
2493
3003
os.setuid(uid)
3004
if debug:
3005
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3006
gid))
2494
3007
except OSError as error:
3008
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3009
.format(uid, gid, os.strerror(error.errno)))
2495
3010
if error.errno != errno.EPERM:
2496
3011
raise
2497
3012
2498
3013
if debug:
2499
3014
# Enable all possible GnuTLS debugging
2500
3015
2501
3016
# "Use a log level over 10 to enable all debugging options."
2502
3017
# - GnuTLS manual
2503
gnutls.library.functions.gnutls_global_set_log_level(11)
2504
2505
@gnutls.library.types.gnutls_log_func
3018
gnutls.global_set_log_level(11)
3019
3020
@gnutls.log_func
2506
3021
def debug_gnutls(level, string):
2507
3022
logger.debug("GnuTLS: %s", string[:-1])
2508
2509
(gnutls.library.functions
2510
.gnutls_global_set_log_function(debug_gnutls))
2511
3023
3024
gnutls.global_set_log_function(debug_gnutls)
3025
2512
3026
# Redirect stdin so all checkers get /dev/null
2513
3027
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2514
3028
os.dup2(null, sys.stdin.fileno())
2515
3029
if null > 2:
2516
3030
os.close(null)
2517
3031
2518
3032
# Need to fork before connecting to D-Bus
2519
3033
if not foreground:
2520
3034
# Close all input and output, do double fork, etc.
2521
3035
daemon()
2522
2523
# multiprocessing will use threads, so before we use gobject we
2524
# need to inform gobject that threads will be used.
2525
gobject.threads_init()
2526
3036
3037
# multiprocessing will use threads, so before we use GLib we need
3038
# to inform GLib that threads will be used.
3039
GLib.threads_init()
3040
2527
3041
global main_loop
2528
3042
# From the Avahi example code
2529
3043
DBusGMainLoop(set_as_default=True)
2530
main_loop = gobject.MainLoop()
3044
main_loop = GLib.MainLoop()
2531
3045
bus = dbus.SystemBus()
2532
3046
# End of Avahi example code
2533
3047
if use_dbus:
2534
3048
try:
2535
3049
bus_name = dbus.service.BusName("se.recompile.Mandos",
2536
bus, do_not_queue=True)
2537
old_bus_name = (dbus.service.BusName
2538
("se.bsnet.fukt.Mandos", bus,
2539
do_not_queue=True))
2540
except dbus.exceptions.NameExistsException as e:
3050
bus,
3051
do_not_queue=True)
3052
old_bus_name = dbus.service.BusName(
3053
"se.bsnet.fukt.Mandos", bus,
3054
do_not_queue=True)
3055
except dbus.exceptions.DBusException as e:
2541
3056
logger.error("Disabling D-Bus:", exc_info=e)
2542
3057
use_dbus = False
2543
3058
server_settings["use_dbus"] = False
2544
3059
tcp_server.use_dbus = False
2545
3060
if zeroconf:
2546
3061
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2547
service = AvahiServiceToSyslog(name =
2548
server_settings["servicename"],
2549
servicetype = "_mandos._tcp",
2550
protocol = protocol, bus = bus)
3062
service = AvahiServiceToSyslog(
3063
name=server_settings["servicename"],
3064
servicetype="_mandos._tcp",
3065
protocol=protocol,
3066
bus=bus)
2551
3067
if server_settings["interface"]:
2552
service.interface = (if_nametoindex
2553
(server_settings["interface"]
2554
.encode("utf-8")))
2555
3068
service.interface = if_nametoindex(
3069
server_settings["interface"].encode("utf-8"))
3070
2556
3071
global multiprocessing_manager
2557
3072
multiprocessing_manager = multiprocessing.Manager()
2558
3073
2559
3074
client_class = Client
2560
3075
if use_dbus:
2561
client_class = functools.partial(ClientDBus, bus = bus)
2562
3076
client_class = functools.partial(ClientDBus, bus=bus)
3077
2563
3078
client_settings = Client.config_parser(client_config)
2564
3079
old_client_settings = {}
2565
3080
clients_data = {}
2566
3081
2567
3082
# This is used to redirect stdout and stderr for checker processes
2568
3083
global wnull
2569
wnull = open(os.devnull, "w") # A writable /dev/null
3084
wnull = open(os.devnull, "w") # A writable /dev/null
2570
3085
# Only used if server is running in foreground but not in debug
2571
3086
# mode
2572
3087
if debug or not foreground:
2573
3088
wnull.close()
2574
3089
2575
3090
# Get client data and settings from last running state.
2576
3091
if server_settings["restore"]:
2577
3092
try:
2578
3093
with open(stored_state_path, "rb") as stored_state:
2579
clients_data, old_client_settings = (pickle.load
2580
(stored_state))
3094
if sys.version_info.major == 2:
3095
clients_data, old_client_settings = pickle.load(
3096
stored_state)
3097
else:
3098
bytes_clients_data, bytes_old_client_settings = (
3099
pickle.load(stored_state, encoding="bytes"))
3100
# Fix bytes to strings
3101
# clients_data
3102
# .keys()
3103
clients_data = {(key.decode("utf-8")
3104
if isinstance(key, bytes)
3105
else key): value
3106
for key, value in
3107
bytes_clients_data.items()}
3108
del bytes_clients_data
3109
for key in clients_data:
3110
value = {(k.decode("utf-8")
3111
if isinstance(k, bytes) else k): v
3112
for k, v in
3113
clients_data[key].items()}
3114
clients_data[key] = value
3115
# .client_structure
3116
value["client_structure"] = [
3117
(s.decode("utf-8")
3118
if isinstance(s, bytes)
3119
else s) for s in
3120
value["client_structure"]]
3121
# .name & .host
3122
for k in ("name", "host"):
3123
if isinstance(value[k], bytes):
3124
value[k] = value[k].decode("utf-8")
3125
# old_client_settings
3126
# .keys()
3127
old_client_settings = {
3128
(key.decode("utf-8")
3129
if isinstance(key, bytes)
3130
else key): value
3131
for key, value in
3132
bytes_old_client_settings.items()}
3133
del bytes_old_client_settings
3134
# .host
3135
for value in old_client_settings.values():
3136
if isinstance(value["host"], bytes):
3137
value["host"] = (value["host"]
3138
.decode("utf-8"))
2581
3139
os.remove(stored_state_path)
2582
3140
except IOError as e:
2583
3141
if e.errno == errno.ENOENT:
2584
logger.warning("Could not load persistent state: {}"
2585
.format(os.strerror(e.errno)))
3142
logger.warning("Could not load persistent state:"
3143
" {}".format(os.strerror(e.errno)))
2586
3144
else:
2587
3145
logger.critical("Could not load persistent state:",
2588
3146
exc_info=e)
2589
3147
raise
2590
3148
except EOFError as e:
2591
3149
logger.warning("Could not load persistent state: "
2592
"EOFError:", exc_info=e)
2593
3150
"EOFError:",
3151
exc_info=e)
3152
2594
3153
with PGPEngine() as pgp:
2595
3154
for client_name, client in clients_data.items():
2596
3155
# Skip removed clients
2597
3156
if client_name not in client_settings:
2598
3157
continue
2599
3158
2600
3159
# Decide which value to use after restoring saved state.
2601
3160
# We have three different values: Old config file,
2602
3161
# new config file, and saved state.
2607
3166
# For each value in new config, check if it
2608
3167
# differs from the old config value (Except for
2609
3168
# the "secret" attribute)
2610
if (name != "secret" and
2611
value != old_client_settings[client_name]
2612
[name]):
3169
if (name != "secret"
3170
and (value !=
3171
old_client_settings[client_name][name])):
2613
3172
client[name] = value
2614
3173
except KeyError:
2615
3174
pass
2616
3175
2617
3176
# Clients who has passed its expire date can still be
2618
# enabled if its last checker was successful. Clients
3177
# enabled if its last checker was successful. A Client
2619
3178
# whose checker succeeded before we stored its state is
2620
3179
# assumed to have successfully run all checkers during
2621
3180
# downtime.
2624
3183
if not client["last_checked_ok"]:
2625
3184
logger.warning(
2626
3185
"disabling client {} - Client never "
2627
"performed a successful checker"
2628
.format(client_name))
3186
"performed a successful checker".format(
3187
client_name))
2629
3188
client["enabled"] = False
2630
3189
elif client["last_checker_status"] != 0:
2631
3190
logger.warning(
2632
3191
"disabling client {} - Client last"
2633
" checker failed with error code {}"
2634
.format(client_name,
2635
client["last_checker_status"]))
3192
" checker failed with error code"
3193
" {}".format(
3194
client_name,
3195
client["last_checker_status"]))
2636
3196
client["enabled"] = False
2637
3197
else:
2638
client["expires"] = (datetime.datetime
2639
.utcnow()
2640
+ client["timeout"])
3198
client["expires"] = (
3199
datetime.datetime.utcnow()
3200
+ client["timeout"])
2641
3201
logger.debug("Last checker succeeded,"
2642
" keeping {} enabled"
2643
.format(client_name))
3202
" keeping {} enabled".format(
3203
client_name))
2644
3204
try:
2645
client["secret"] = (
2646
pgp.decrypt(client["encrypted_secret"],
2647
client_settings[client_name]
2648
["secret"]))
3205
client["secret"] = pgp.decrypt(
3206
client["encrypted_secret"],
3207
client_settings[client_name]["secret"])
2649
3208
except PGPError:
2650
3209
# If decryption fails, we use secret from new settings
2651
logger.debug("Failed to decrypt {} old secret"
2652
.format(client_name))
2653
client["secret"] = (
2654
client_settings[client_name]["secret"])
2655
3210
logger.debug("Failed to decrypt {} old secret".format(
3211
client_name))
3212
client["secret"] = (client_settings[client_name]
3213
["secret"])
3214
2656
3215
# Add/remove clients based on new changes made to config
2657
3216
for client_name in (set(old_client_settings)
2658
3217
- set(client_settings)):
2660
3219
for client_name in (set(client_settings)
2661
3220
- set(old_client_settings)):
2662
3221
clients_data[client_name] = client_settings[client_name]
2663
3222
2664
3223
# Create all client objects
2665
3224
for client_name, client in clients_data.items():
2666
3225
tcp_server.clients[client_name] = client_class(
2667
name = client_name, settings = client,
2668
server_settings = server_settings)
2669
3226
name=client_name,
3227
settings=client,
3228
server_settings=server_settings)
3229
2670
3230
if not tcp_server.clients:
2671
3231
logger.warning("No clients defined")
2672
3232
2673
3233
if not foreground:
2674
3234
if pidfile is not None:
3235
pid = os.getpid()
2675
3236
try:
2676
3237
with pidfile:
2677
pid = os.getpid()
2678
pidfile.write("{}\n".format(pid).encode("utf-8"))
3238
print(pid, file=pidfile)
2679
3239
except IOError:
2680
3240
logger.error("Could not write to file %r with PID %d",
2681
3241
pidfilename, pid)
2682
3242
del pidfile
2683
3243
del pidfilename
2684
2685
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2686
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2687
3244
3245
for termsig in (signal.SIGHUP, signal.SIGTERM):
3246
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3247
lambda: main_loop.quit() and False)
3248
2688
3249
if use_dbus:
2689
@alternate_dbus_interfaces({"se.recompile.Mandos":
2690
"se.bsnet.fukt.Mandos"})
2691
class MandosDBusService(DBusObjectWithProperties):
3250
3251
@alternate_dbus_interfaces(
3252
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3253
class MandosDBusService(DBusObjectWithObjectManager):
2692
3254
"""A D-Bus proxy object"""
3255
2693
3256
def __init__(self):
2694
3257
dbus.service.Object.__init__(self, bus, "/")
3258
2695
3259
_interface = "se.recompile.Mandos"
2696
2697
@dbus_interface_annotations(_interface)
2698
def _foo(self):
2699
return { "org.freedesktop.DBus.Property"
2700
".EmitsChangedSignal":
2701
"false"}
2702
3260
2703
3261
@dbus.service.signal(_interface, signature="o")
2704
3262
def ClientAdded(self, objpath):
2705
3263
"D-Bus signal"
2706
3264
pass
2707
3265
2708
3266
@dbus.service.signal(_interface, signature="ss")
2709
3267
def ClientNotFound(self, fingerprint, address):
2710
3268
"D-Bus signal"
2711
3269
pass
2712
3270
3271
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3272
"true"})
2713
3273
@dbus.service.signal(_interface, signature="os")
2714
3274
def ClientRemoved(self, objpath, name):
2715
3275
"D-Bus signal"
2716
3276
pass
2717
3277
3278
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3279
"true"})
2718
3280
@dbus.service.method(_interface, out_signature="ao")
2719
3281
def GetAllClients(self):
2720
3282
"D-Bus method"
2721
return dbus.Array(c.dbus_object_path
2722
for c in
2723
tcp_server.clients.itervalues())
2724
3283
return dbus.Array(c.dbus_object_path for c in
3284
tcp_server.clients.values())
3285
3286
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3287
"true"})
2725
3288
@dbus.service.method(_interface,
2726
3289
out_signature="a{oa{sv}}")
2727
3290
def GetAllClientsWithProperties(self):
2728
3291
"D-Bus method"
2729
3292
return dbus.Dictionary(
2730
{ c.dbus_object_path: c.GetAll("")
2731
for c in tcp_server.clients.itervalues() },
3293
{c.dbus_object_path: c.GetAll(
3294
"se.recompile.Mandos.Client")
3295
for c in tcp_server.clients.values()},
2732
3296
signature="oa{sv}")
2733
3297
2734
3298
@dbus.service.method(_interface, in_signature="o")
2735
3299
def RemoveClient(self, object_path):
2736
3300
"D-Bus method"
2737
for c in tcp_server.clients.itervalues():
3301
for c in tcp_server.clients.values():
2738
3302
if c.dbus_object_path == object_path:
2739
3303
del tcp_server.clients[c.name]
2740
3304
c.remove_from_connection()
2741
# Don't signal anything except ClientRemoved
3305
# Don't signal the disabling
2742
3306
c.disable(quiet=True)
2743
# Emit D-Bus signal
2744
self.ClientRemoved(object_path, c.name)
3307
# Emit D-Bus signal for removal
3308
self.client_removed_signal(c)
2745
3309
return
2746
3310
raise KeyError(object_path)
2747
3311
2748
3312
del _interface
2749
3313
3314
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3315
out_signature="a{oa{sa{sv}}}")
3316
def GetManagedObjects(self):
3317
"""D-Bus method"""
3318
return dbus.Dictionary(
3319
{client.dbus_object_path:
3320
dbus.Dictionary(
3321
{interface: client.GetAll(interface)
3322
for interface in
3323
client._get_all_interface_names()})
3324
for client in tcp_server.clients.values()})
3325
3326
def client_added_signal(self, client):
3327
"""Send the new standard signal and the old signal"""
3328
if use_dbus:
3329
# New standard signal
3330
self.InterfacesAdded(
3331
client.dbus_object_path,
3332
dbus.Dictionary(
3333
{interface: client.GetAll(interface)
3334
for interface in
3335
client._get_all_interface_names()}))
3336
# Old signal
3337
self.ClientAdded(client.dbus_object_path)
3338
3339
def client_removed_signal(self, client):
3340
"""Send the new standard signal and the old signal"""
3341
if use_dbus:
3342
# New standard signal
3343
self.InterfacesRemoved(
3344
client.dbus_object_path,
3345
client._get_all_interface_names())
3346
# Old signal
3347
self.ClientRemoved(client.dbus_object_path,
3348
client.name)
3349
2750
3350
mandos_dbus_service = MandosDBusService()
2751
3351
3352
# Save modules to variables to exempt the modules from being
3353
# unloaded before the function registered with atexit() is run.
3354
mp = multiprocessing
3355
wn = wnull
3356
2752
3357
def cleanup():
2753
3358
"Cleanup function; run on exit"
2754
3359
if zeroconf:
2755
3360
service.cleanup()
2756
2757
multiprocessing.active_children()
2758
wnull.close()
3361
3362
mp.active_children()
3363
wn.close()
2759
3364
if not (tcp_server.clients or client_settings):
2760
3365
return
2761
3366
2762
3367
# Store client before exiting. Secrets are encrypted with key
2763
3368
# based on what config file has. If config file is
2764
3369
# removed/edited, old secret will thus be unrecovable.
2765
3370
clients = {}
2766
3371
with PGPEngine() as pgp:
2767
for client in tcp_server.clients.itervalues():
3372
for client in tcp_server.clients.values():
2768
3373
key = client_settings[client.name]["secret"]
2769
3374
client.encrypted_secret = pgp.encrypt(client.secret,
2770
3375
key)
2771
3376
client_dict = {}
2772
3377
2773
3378
# A list of attributes that can not be pickled
2774
3379
# + secret.
2775
exclude = { "bus", "changedstate", "secret",
2776
"checker", "server_settings" }
2777
for name, typ in (inspect.getmembers
2778
(dbus.service.Object)):
3380
exclude = {"bus", "changedstate", "secret",
3381
"checker", "server_settings"}
3382
for name, typ in inspect.getmembers(dbus.service
3383
.Object):
2779
3384
exclude.add(name)
2780
3385
2781
3386
client_dict["encrypted_secret"] = (client
2782
3387
.encrypted_secret)
2783
3388
for attr in client.client_structure:
2784
3389
if attr not in exclude:
2785
3390
client_dict[attr] = getattr(client, attr)
2786
3391
2787
3392
clients[client.name] = client_dict
2788
3393
del client_settings[client.name]["secret"]
2789
3394
2790
3395
try:
2791
with (tempfile.NamedTemporaryFile
2792
(mode='wb', suffix=".pickle", prefix='clients-',
2793
dir=os.path.dirname(stored_state_path),
2794
delete=False)) as stored_state:
2795
pickle.dump((clients, client_settings), stored_state)
2796
tempname=stored_state.name
3396
with tempfile.NamedTemporaryFile(
3397
mode='wb',
3398
suffix=".pickle",
3399
prefix='clients-',
3400
dir=os.path.dirname(stored_state_path),
3401
delete=False) as stored_state:
3402
pickle.dump((clients, client_settings), stored_state,
3403
protocol=2)
3404
tempname = stored_state.name
2797
3405
os.rename(tempname, stored_state_path)
2798
3406
except (IOError, OSError) as e:
2799
3407
if not debug:
2808
3416
logger.warning("Could not save persistent state:",
2809
3417
exc_info=e)
2810
3418
raise
2811
3419
2812
3420
# Delete all clients, and settings from config
2813
3421
while tcp_server.clients:
2814
3422
name, client = tcp_server.clients.popitem()
2815
3423
if use_dbus:
2816
3424
client.remove_from_connection()
2817
# Don't signal anything except ClientRemoved
3425
# Don't signal the disabling
2818
3426
client.disable(quiet=True)
3427
# Emit D-Bus signal for removal
2819
3428
if use_dbus:
2820
# Emit D-Bus signal
2821
mandos_dbus_service.ClientRemoved(client
2822
.dbus_object_path,
2823
client.name)
3429
mandos_dbus_service.client_removed_signal(client)
2824
3430
client_settings.clear()
2825
3431
2826
3432
atexit.register(cleanup)
2827
2828
for client in tcp_server.clients.itervalues():
3433
3434
for client in tcp_server.clients.values():
2829
3435
if use_dbus:
2830
# Emit D-Bus signal
2831
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3436
# Emit D-Bus signal for adding
3437
mandos_dbus_service.client_added_signal(client)
2832
3438
# Need to initiate checking of clients
2833
3439
if client.enabled:
2834
3440
client.init_checker()
2835
3441
2836
3442
tcp_server.enable()
2837
3443
tcp_server.server_activate()
2838
3444
2839
3445
# Find out what port we got
2840
3446
if zeroconf:
2841
3447
service.port = tcp_server.socket.getsockname()[1]
2846
3452
else: # IPv4
2847
3453
logger.info("Now listening on address %r, port %d",
2848
3454
*tcp_server.socket.getsockname())
2849
2850
#service.interface = tcp_server.socket.getsockname()[3]
2851
3455
3456
# service.interface = tcp_server.socket.getsockname()[3]
3457
2852
3458
try:
2853
3459
if zeroconf:
2854
3460
# From the Avahi example code
2859
3465
cleanup()
2860
3466
sys.exit(1)
2861
3467
# End of Avahi example code
2862
2863
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2864
lambda *args, **kwargs:
2865
(tcp_server.handle_request
2866
(*args[2:], **kwargs) or True))
2867
3468
3469
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3470
lambda *args, **kwargs:
3471
(tcp_server.handle_request
3472
(*args[2:], **kwargs) or True))
3473
2868
3474
logger.debug("Starting main loop")
2869
3475
main_loop.run()
2870
3476
except AvahiError as error:
2879
3485
# Must run before the D-Bus bus name gets deregistered
2880
3486
cleanup()
2881
3487
3488
2882
3489
if __name__ == '__main__':
2883
3490
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0