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- Committer: Teddy Hogeborn
- Date: 2019-08-03 12:27:14 UTC
- mto: This revision was merged to the branch mainline in revision 386.
- Revision ID: teddy@recompile.se-20190803122714-efudxsyomr1k0zbt
dracut-module/password-agent.c: Use O_NOCTTY
Whenever a file is opened using open(), use the O_NOCTTY flag, just to
be safe.
* dracut-module/password-agent.c (test_start_mandos_client_execv): Use
O_NOCTTY.
(test_wait_for_mandos_client_exit_failure): - '' -
(test_wait_for_mandos_client_exit_killed): - '' -
(test_read_mandos_client_output_readerror): - '' -
(test_read_inotify_event_readerror): - '' -
(test_connect_question_socket_bad_epoll): - '' -
(test_send_password_to_socket_bad_epoll): - '' -
(assert_add_existing_questions_to_devnull): - '' -
Whenever a file is opened using open(), use the O_NOCTTY flag, just to
be safe.
* dracut-module/password-agent.c (test_start_mandos_client_execv): Use
O_NOCTTY.
(test_wait_for_mandos_client_exit_failure): - '' -
(test_wait_for_mandos_client_exit_killed): - '' -
(test_read_mandos_client_output_readerror): - '' -
(test_read_inotify_event_readerror): - '' -
(test_connect_question_socket_bad_epoll): - '' -
(test_send_password_to_socket_bad_epoll): - '' -
(assert_add_existing_questions_to_devnull): - '' -
- files added:
- bugs.xml
- debian/tests
- debian/upstream
- dracut-module
- network-hooks.d
- plugin-helpers
- files removed:
- initramfs-tools-hook-conf
- files modified:
- .bzrignore
added
removed
mandos
1
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 © 2008-2011 Teddy Hogeborn
15
# Copyright © 2008-2011 Björn Påhlsson
16
#
17
# This program is free software: you can redistribute it and/or modify
18
# it under the terms of the GNU General Public License as published by
14
# Copyright © 2008-2019 Teddy Hogeborn
15
# Copyright © 2008-2019 Björn Påhlsson
16
#
17
# This file is part of Mandos.
18
#
19
# Mandos is free software: you can redistribute it and/or modify it
20
# under the terms of the GNU General Public License as published by
19
21
# the Free Software Foundation, either version 3 of the License, or
20
22
# (at your option) any later version.
21
23
#
22
# This program is distributed in the hope that it will be useful,
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
24
# Mandos is distributed in the hope that it will be useful, but
25
# WITHOUT ANY WARRANTY; without even the implied warranty of
24
26
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25
27
# GNU General Public License for more details.
26
#
28
#
27
29
# You should have received a copy of the GNU General Public License
28
# along with this program. If not, see
29
# <http://www.gnu.org/licenses/>.
30
#
31
# Contact the authors at <mandos@fukt.bsnet.se>.
32
#
30
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
31
#
32
# Contact the authors at <mandos@recompile.se>.
33
#
33
34
34
35
from __future__ import (division, absolute_import, print_function,
35
36
unicode_literals)
36
37
37
import SocketServer as socketserver
38
try:
39
from future_builtins import *
40
except ImportError:
41
pass
42
43
try:
44
import SocketServer as socketserver
45
except ImportError:
46
import socketserver
38
47
import socket
39
48
import argparse
40
49
import datetime
41
50
import errno
42
import gnutls.crypto
43
import gnutls.connection
44
import gnutls.errors
45
import gnutls.library.functions
46
import gnutls.library.constants
47
import gnutls.library.types
48
import ConfigParser as configparser
51
try:
52
import ConfigParser as configparser
53
except ImportError:
54
import configparser
49
55
import sys
50
56
import re
51
57
import os
60
66
import struct
61
67
import fcntl
62
68
import functools
63
import cPickle as pickle
69
try:
70
import cPickle as pickle
71
except ImportError:
72
import pickle
64
73
import multiprocessing
65
74
import types
75
import binascii
76
import tempfile
77
import itertools
78
import collections
79
import codecs
66
80
67
81
import dbus
68
82
import dbus.service
69
import gobject
70
import avahi
83
import gi
84
from gi.repository import GLib
71
85
from dbus.mainloop.glib import DBusGMainLoop
72
86
import ctypes
73
87
import ctypes.util
74
88
import xml.dom.minidom
75
89
import inspect
76
90
91
# Try to find the value of SO_BINDTODEVICE:
77
92
try:
93
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
94
# newer, and it is also the most natural place for it:
78
95
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
79
96
except AttributeError:
80
97
try:
98
# This is where SO_BINDTODEVICE was up to and including Python
99
# 2.6, and also 3.2:
81
100
from IN import SO_BINDTODEVICE
82
101
except ImportError:
83
SO_BINDTODEVICE = None
84
85
86
version = "1.3.1"
87
88
#logger = logging.getLogger('mandos')
89
logger = logging.Logger('mandos')
90
syslogger = (logging.handlers.SysLogHandler
91
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
92
address = str("/dev/log")))
93
syslogger.setFormatter(logging.Formatter
94
('Mandos [%(process)d]: %(levelname)s:'
95
' %(message)s'))
96
logger.addHandler(syslogger)
97
98
console = logging.StreamHandler()
99
console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'
100
' %(levelname)s:'
101
' %(message)s'))
102
logger.addHandler(console)
102
# In Python 2.7 it seems to have been removed entirely.
103
# Try running the C preprocessor:
104
try:
105
cc = subprocess.Popen(["cc", "--language=c", "-E",
106
"/dev/stdin"],
107
stdin=subprocess.PIPE,
108
stdout=subprocess.PIPE)
109
stdout = cc.communicate(
110
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
111
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
112
except (OSError, ValueError, IndexError):
113
# No value found
114
SO_BINDTODEVICE = None
115
116
if sys.version_info.major == 2:
117
str = unicode
118
119
if sys.version_info < (3, 2):
120
configparser.Configparser = configparser.SafeConfigParser
121
122
version = "1.8.5"
123
stored_state_file = "clients.pickle"
124
125
logger = logging.getLogger()
126
syslogger = None
127
128
try:
129
if_nametoindex = ctypes.cdll.LoadLibrary(
130
ctypes.util.find_library("c")).if_nametoindex
131
except (OSError, AttributeError):
132
133
def if_nametoindex(interface):
134
"Get an interface index the hard way, i.e. using fcntl()"
135
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
136
with contextlib.closing(socket.socket()) as s:
137
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
138
struct.pack(b"16s16x", interface))
139
interface_index = struct.unpack("I", ifreq[16:20])[0]
140
return interface_index
141
142
143
def copy_function(func):
144
"""Make a copy of a function"""
145
if sys.version_info.major == 2:
146
return types.FunctionType(func.func_code,
147
func.func_globals,
148
func.func_name,
149
func.func_defaults,
150
func.func_closure)
151
else:
152
return types.FunctionType(func.__code__,
153
func.__globals__,
154
func.__name__,
155
func.__defaults__,
156
func.__closure__)
157
158
159
def initlogger(debug, level=logging.WARNING):
160
"""init logger and add loglevel"""
161
162
global syslogger
163
syslogger = (logging.handlers.SysLogHandler(
164
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
165
address="/dev/log"))
166
syslogger.setFormatter(logging.Formatter
167
('Mandos [%(process)d]: %(levelname)s:'
168
' %(message)s'))
169
logger.addHandler(syslogger)
170
171
if debug:
172
console = logging.StreamHandler()
173
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
174
' [%(process)d]:'
175
' %(levelname)s:'
176
' %(message)s'))
177
logger.addHandler(console)
178
logger.setLevel(level)
179
180
181
class PGPError(Exception):
182
"""Exception if encryption/decryption fails"""
183
pass
184
185
186
class PGPEngine(object):
187
"""A simple class for OpenPGP symmetric encryption & decryption"""
188
189
def __init__(self):
190
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
191
self.gpg = "gpg"
192
try:
193
output = subprocess.check_output(["gpgconf"])
194
for line in output.splitlines():
195
name, text, path = line.split(b":")
196
if name == "gpg":
197
self.gpg = path
198
break
199
except OSError as e:
200
if e.errno != errno.ENOENT:
201
raise
202
self.gnupgargs = ['--batch',
203
'--homedir', self.tempdir,
204
'--force-mdc',
205
'--quiet']
206
# Only GPG version 1 has the --no-use-agent option.
207
if self.gpg == "gpg" or self.gpg.endswith("/gpg"):
208
self.gnupgargs.append("--no-use-agent")
209
210
def __enter__(self):
211
return self
212
213
def __exit__(self, exc_type, exc_value, traceback):
214
self._cleanup()
215
return False
216
217
def __del__(self):
218
self._cleanup()
219
220
def _cleanup(self):
221
if self.tempdir is not None:
222
# Delete contents of tempdir
223
for root, dirs, files in os.walk(self.tempdir,
224
topdown=False):
225
for filename in files:
226
os.remove(os.path.join(root, filename))
227
for dirname in dirs:
228
os.rmdir(os.path.join(root, dirname))
229
# Remove tempdir
230
os.rmdir(self.tempdir)
231
self.tempdir = None
232
233
def password_encode(self, password):
234
# Passphrase can not be empty and can not contain newlines or
235
# NUL bytes. So we prefix it and hex encode it.
236
encoded = b"mandos" + binascii.hexlify(password)
237
if len(encoded) > 2048:
238
# GnuPG can't handle long passwords, so encode differently
239
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
240
.replace(b"\n", b"\\n")
241
.replace(b"\0", b"\\x00"))
242
return encoded
243
244
def encrypt(self, data, password):
245
passphrase = self.password_encode(password)
246
with tempfile.NamedTemporaryFile(
247
dir=self.tempdir) as passfile:
248
passfile.write(passphrase)
249
passfile.flush()
250
proc = subprocess.Popen([self.gpg, '--symmetric',
251
'--passphrase-file',
252
passfile.name]
253
+ self.gnupgargs,
254
stdin=subprocess.PIPE,
255
stdout=subprocess.PIPE,
256
stderr=subprocess.PIPE)
257
ciphertext, err = proc.communicate(input=data)
258
if proc.returncode != 0:
259
raise PGPError(err)
260
return ciphertext
261
262
def decrypt(self, data, password):
263
passphrase = self.password_encode(password)
264
with tempfile.NamedTemporaryFile(
265
dir=self.tempdir) as passfile:
266
passfile.write(passphrase)
267
passfile.flush()
268
proc = subprocess.Popen([self.gpg, '--decrypt',
269
'--passphrase-file',
270
passfile.name]
271
+ self.gnupgargs,
272
stdin=subprocess.PIPE,
273
stdout=subprocess.PIPE,
274
stderr=subprocess.PIPE)
275
decrypted_plaintext, err = proc.communicate(input=data)
276
if proc.returncode != 0:
277
raise PGPError(err)
278
return decrypted_plaintext
279
280
281
# Pretend that we have an Avahi module
282
class avahi(object):
283
"""This isn't so much a class as it is a module-like namespace."""
284
IF_UNSPEC = -1 # avahi-common/address.h
285
PROTO_UNSPEC = -1 # avahi-common/address.h
286
PROTO_INET = 0 # avahi-common/address.h
287
PROTO_INET6 = 1 # avahi-common/address.h
288
DBUS_NAME = "org.freedesktop.Avahi"
289
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
290
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
291
DBUS_PATH_SERVER = "/"
292
293
@staticmethod
294
def string_array_to_txt_array(t):
295
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
296
for s in t), signature="ay")
297
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
298
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
299
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
300
SERVER_INVALID = 0 # avahi-common/defs.h
301
SERVER_REGISTERING = 1 # avahi-common/defs.h
302
SERVER_RUNNING = 2 # avahi-common/defs.h
303
SERVER_COLLISION = 3 # avahi-common/defs.h
304
SERVER_FAILURE = 4 # avahi-common/defs.h
305
103
306
104
307
class AvahiError(Exception):
105
308
def __init__(self, value, *args, **kwargs):
106
309
self.value = value
107
super(AvahiError, self).__init__(value, *args, **kwargs)
108
def __unicode__(self):
109
return unicode(repr(self.value))
310
return super(AvahiError, self).__init__(value, *args,
311
**kwargs)
312
110
313
111
314
class AvahiServiceError(AvahiError):
112
315
pass
113
316
317
114
318
class AvahiGroupError(AvahiError):
115
319
pass
116
320
117
321
118
322
class AvahiService(object):
119
323
"""An Avahi (Zeroconf) service.
120
324
121
325
Attributes:
122
326
interface: integer; avahi.IF_UNSPEC or an interface index.
123
327
Used to optionally bind to the specified interface.
124
328
name: string; Example: 'Mandos'
125
329
type: string; Example: '_mandos._tcp'.
126
See <http://www.dns-sd.org/ServiceTypes.html>
330
See <https://www.iana.org/assignments/service-names-port-numbers>
127
331
port: integer; what port to announce
128
332
TXT: list of strings; TXT record for the service
129
333
domain: string; Domain to publish on, default to .local if empty.
135
339
server: D-Bus Server
136
340
bus: dbus.SystemBus()
137
341
"""
138
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
139
servicetype = None, port = None, TXT = None,
140
domain = "", host = "", max_renames = 32768,
141
protocol = avahi.PROTO_UNSPEC, bus = None):
342
343
def __init__(self,
344
interface=avahi.IF_UNSPEC,
345
name=None,
346
servicetype=None,
347
port=None,
348
TXT=None,
349
domain="",
350
host="",
351
max_renames=32768,
352
protocol=avahi.PROTO_UNSPEC,
353
bus=None):
142
354
self.interface = interface
143
355
self.name = name
144
356
self.type = servicetype
153
365
self.server = None
154
366
self.bus = bus
155
367
self.entry_group_state_changed_match = None
156
def rename(self):
368
369
def rename(self, remove=True):
157
370
"""Derived from the Avahi example code"""
158
371
if self.rename_count >= self.max_renames:
159
372
logger.critical("No suitable Zeroconf service name found"
160
373
" after %i retries, exiting.",
161
374
self.rename_count)
162
375
raise AvahiServiceError("Too many renames")
163
self.name = unicode(self.server.GetAlternativeServiceName(self.name))
376
self.name = str(
377
self.server.GetAlternativeServiceName(self.name))
378
self.rename_count += 1
164
379
logger.info("Changing Zeroconf service name to %r ...",
165
380
self.name)
166
syslogger.setFormatter(logging.Formatter
167
('Mandos (%s) [%%(process)d]:'
168
' %%(levelname)s: %%(message)s'
169
% self.name))
170
self.remove()
381
if remove:
382
self.remove()
171
383
try:
172
384
self.add()
173
385
except dbus.exceptions.DBusException as error:
174
logger.critical("DBusException: %s", error)
175
self.cleanup()
176
os._exit(1)
177
self.rename_count += 1
386
if (error.get_dbus_name()
387
== "org.freedesktop.Avahi.CollisionError"):
388
logger.info("Local Zeroconf service name collision.")
389
return self.rename(remove=False)
390
else:
391
logger.critical("D-Bus Exception", exc_info=error)
392
self.cleanup()
393
os._exit(1)
394
178
395
def remove(self):
179
396
"""Derived from the Avahi example code"""
180
397
if self.entry_group_state_changed_match is not None:
182
399
self.entry_group_state_changed_match = None
183
400
if self.group is not None:
184
401
self.group.Reset()
402
185
403
def add(self):
186
404
"""Derived from the Avahi example code"""
187
405
self.remove()
192
410
avahi.DBUS_INTERFACE_ENTRY_GROUP)
193
411
self.entry_group_state_changed_match = (
194
412
self.group.connect_to_signal(
195
'StateChanged', self .entry_group_state_changed))
413
'StateChanged', self.entry_group_state_changed))
196
414
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
197
415
self.name, self.type)
198
416
self.group.AddService(
204
422
dbus.UInt16(self.port),
205
423
avahi.string_array_to_txt_array(self.TXT))
206
424
self.group.Commit()
425
207
426
def entry_group_state_changed(self, state, error):
208
427
"""Derived from the Avahi example code"""
209
428
logger.debug("Avahi entry group state change: %i", state)
210
429
211
430
if state == avahi.ENTRY_GROUP_ESTABLISHED:
212
431
logger.debug("Zeroconf service established.")
213
432
elif state == avahi.ENTRY_GROUP_COLLISION:
215
434
self.rename()
216
435
elif state == avahi.ENTRY_GROUP_FAILURE:
217
436
logger.critical("Avahi: Error in group state changed %s",
218
unicode(error))
219
raise AvahiGroupError("State changed: %s"
220
% unicode(error))
437
str(error))
438
raise AvahiGroupError("State changed: {!s}".format(error))
439
221
440
def cleanup(self):
222
441
"""Derived from the Avahi example code"""
223
442
if self.group is not None:
224
443
try:
225
444
self.group.Free()
226
445
except (dbus.exceptions.UnknownMethodException,
227
dbus.exceptions.DBusException) as e:
446
dbus.exceptions.DBusException):
228
447
pass
229
448
self.group = None
230
449
self.remove()
450
231
451
def server_state_changed(self, state, error=None):
232
452
"""Derived from the Avahi example code"""
233
453
logger.debug("Avahi server state change: %i", state)
234
bad_states = { avahi.SERVER_INVALID:
235
"Zeroconf server invalid",
236
avahi.SERVER_REGISTERING: None,
237
avahi.SERVER_COLLISION:
238
"Zeroconf server name collision",
239
avahi.SERVER_FAILURE:
240
"Zeroconf server failure" }
454
bad_states = {
455
avahi.SERVER_INVALID: "Zeroconf server invalid",
456
avahi.SERVER_REGISTERING: None,
457
avahi.SERVER_COLLISION: "Zeroconf server name collision",
458
avahi.SERVER_FAILURE: "Zeroconf server failure",
459
}
241
460
if state in bad_states:
242
461
if bad_states[state] is not None:
243
462
if error is None:
246
465
logger.error(bad_states[state] + ": %r", error)
247
466
self.cleanup()
248
467
elif state == avahi.SERVER_RUNNING:
249
self.add()
468
try:
469
self.add()
470
except dbus.exceptions.DBusException as error:
471
if (error.get_dbus_name()
472
== "org.freedesktop.Avahi.CollisionError"):
473
logger.info("Local Zeroconf service name"
474
" collision.")
475
return self.rename(remove=False)
476
else:
477
logger.critical("D-Bus Exception", exc_info=error)
478
self.cleanup()
479
os._exit(1)
250
480
else:
251
481
if error is None:
252
482
logger.debug("Unknown state: %r", state)
253
483
else:
254
484
logger.debug("Unknown state: %r: %r", state, error)
485
255
486
def activate(self):
256
487
"""Derived from the Avahi example code"""
257
488
if self.server is None:
261
492
follow_name_owner_changes=True),
262
493
avahi.DBUS_INTERFACE_SERVER)
263
494
self.server.connect_to_signal("StateChanged",
264
self.server_state_changed)
495
self.server_state_changed)
265
496
self.server_state_changed(self.server.GetState())
266
497
267
498
268
def _timedelta_to_milliseconds(td):
269
"Convert a datetime.timedelta() to milliseconds"
270
return ((td.days * 24 * 60 * 60 * 1000)
271
+ (td.seconds * 1000)
272
+ (td.microseconds // 1000))
273
499
class AvahiServiceToSyslog(AvahiService):
500
def rename(self, *args, **kwargs):
501
"""Add the new name to the syslog messages"""
502
ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
503
syslogger.setFormatter(logging.Formatter(
504
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
505
.format(self.name)))
506
return ret
507
508
509
# Pretend that we have a GnuTLS module
510
class gnutls(object):
511
"""This isn't so much a class as it is a module-like namespace."""
512
513
library = ctypes.util.find_library("gnutls")
514
if library is None:
515
library = ctypes.util.find_library("gnutls-deb0")
516
_library = ctypes.cdll.LoadLibrary(library)
517
del library
518
519
# Unless otherwise indicated, the constants and types below are
520
# all from the gnutls/gnutls.h C header file.
521
522
# Constants
523
E_SUCCESS = 0
524
E_INTERRUPTED = -52
525
E_AGAIN = -28
526
CRT_OPENPGP = 2
527
CRT_RAWPK = 3
528
CLIENT = 2
529
SHUT_RDWR = 0
530
CRD_CERTIFICATE = 1
531
E_NO_CERTIFICATE_FOUND = -49
532
X509_FMT_DER = 0
533
NO_TICKETS = 1<<10
534
ENABLE_RAWPK = 1<<18
535
CTYPE_PEERS = 3
536
KEYID_USE_SHA256 = 1 # gnutls/x509.h
537
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
538
539
# Types
540
class session_int(ctypes.Structure):
541
_fields_ = []
542
session_t = ctypes.POINTER(session_int)
543
544
class certificate_credentials_st(ctypes.Structure):
545
_fields_ = []
546
certificate_credentials_t = ctypes.POINTER(
547
certificate_credentials_st)
548
certificate_type_t = ctypes.c_int
549
550
class datum_t(ctypes.Structure):
551
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
552
('size', ctypes.c_uint)]
553
554
class openpgp_crt_int(ctypes.Structure):
555
_fields_ = []
556
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
557
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
558
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
559
credentials_type_t = ctypes.c_int
560
transport_ptr_t = ctypes.c_void_p
561
close_request_t = ctypes.c_int
562
563
# Exceptions
564
class Error(Exception):
565
def __init__(self, message=None, code=None, args=()):
566
# Default usage is by a message string, but if a return
567
# code is passed, convert it to a string with
568
# gnutls.strerror()
569
self.code = code
570
if message is None and code is not None:
571
message = gnutls.strerror(code)
572
return super(gnutls.Error, self).__init__(
573
message, *args)
574
575
class CertificateSecurityError(Error):
576
pass
577
578
# Classes
579
class Credentials(object):
580
def __init__(self):
581
self._c_object = gnutls.certificate_credentials_t()
582
gnutls.certificate_allocate_credentials(
583
ctypes.byref(self._c_object))
584
self.type = gnutls.CRD_CERTIFICATE
585
586
def __del__(self):
587
gnutls.certificate_free_credentials(self._c_object)
588
589
class ClientSession(object):
590
def __init__(self, socket, credentials=None):
591
self._c_object = gnutls.session_t()
592
gnutls_flags = gnutls.CLIENT
593
if gnutls.check_version(b"3.5.6"):
594
gnutls_flags |= gnutls.NO_TICKETS
595
if gnutls.has_rawpk:
596
gnutls_flags |= gnutls.ENABLE_RAWPK
597
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
598
del gnutls_flags
599
gnutls.set_default_priority(self._c_object)
600
gnutls.transport_set_ptr(self._c_object, socket.fileno())
601
gnutls.handshake_set_private_extensions(self._c_object,
602
True)
603
self.socket = socket
604
if credentials is None:
605
credentials = gnutls.Credentials()
606
gnutls.credentials_set(self._c_object, credentials.type,
607
ctypes.cast(credentials._c_object,
608
ctypes.c_void_p))
609
self.credentials = credentials
610
611
def __del__(self):
612
gnutls.deinit(self._c_object)
613
614
def handshake(self):
615
return gnutls.handshake(self._c_object)
616
617
def send(self, data):
618
data = bytes(data)
619
data_len = len(data)
620
while data_len > 0:
621
data_len -= gnutls.record_send(self._c_object,
622
data[-data_len:],
623
data_len)
624
625
def bye(self):
626
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
627
628
# Error handling functions
629
def _error_code(result):
630
"""A function to raise exceptions on errors, suitable
631
for the 'restype' attribute on ctypes functions"""
632
if result >= 0:
633
return result
634
if result == gnutls.E_NO_CERTIFICATE_FOUND:
635
raise gnutls.CertificateSecurityError(code=result)
636
raise gnutls.Error(code=result)
637
638
def _retry_on_error(result, func, arguments):
639
"""A function to retry on some errors, suitable
640
for the 'errcheck' attribute on ctypes functions"""
641
while result < 0:
642
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
643
return _error_code(result)
644
result = func(*arguments)
645
return result
646
647
# Unless otherwise indicated, the function declarations below are
648
# all from the gnutls/gnutls.h C header file.
649
650
# Functions
651
priority_set_direct = _library.gnutls_priority_set_direct
652
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
653
ctypes.POINTER(ctypes.c_char_p)]
654
priority_set_direct.restype = _error_code
655
656
init = _library.gnutls_init
657
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
658
init.restype = _error_code
659
660
set_default_priority = _library.gnutls_set_default_priority
661
set_default_priority.argtypes = [session_t]
662
set_default_priority.restype = _error_code
663
664
record_send = _library.gnutls_record_send
665
record_send.argtypes = [session_t, ctypes.c_void_p,
666
ctypes.c_size_t]
667
record_send.restype = ctypes.c_ssize_t
668
record_send.errcheck = _retry_on_error
669
670
certificate_allocate_credentials = (
671
_library.gnutls_certificate_allocate_credentials)
672
certificate_allocate_credentials.argtypes = [
673
ctypes.POINTER(certificate_credentials_t)]
674
certificate_allocate_credentials.restype = _error_code
675
676
certificate_free_credentials = (
677
_library.gnutls_certificate_free_credentials)
678
certificate_free_credentials.argtypes = [
679
certificate_credentials_t]
680
certificate_free_credentials.restype = None
681
682
handshake_set_private_extensions = (
683
_library.gnutls_handshake_set_private_extensions)
684
handshake_set_private_extensions.argtypes = [session_t,
685
ctypes.c_int]
686
handshake_set_private_extensions.restype = None
687
688
credentials_set = _library.gnutls_credentials_set
689
credentials_set.argtypes = [session_t, credentials_type_t,
690
ctypes.c_void_p]
691
credentials_set.restype = _error_code
692
693
strerror = _library.gnutls_strerror
694
strerror.argtypes = [ctypes.c_int]
695
strerror.restype = ctypes.c_char_p
696
697
certificate_type_get = _library.gnutls_certificate_type_get
698
certificate_type_get.argtypes = [session_t]
699
certificate_type_get.restype = _error_code
700
701
certificate_get_peers = _library.gnutls_certificate_get_peers
702
certificate_get_peers.argtypes = [session_t,
703
ctypes.POINTER(ctypes.c_uint)]
704
certificate_get_peers.restype = ctypes.POINTER(datum_t)
705
706
global_set_log_level = _library.gnutls_global_set_log_level
707
global_set_log_level.argtypes = [ctypes.c_int]
708
global_set_log_level.restype = None
709
710
global_set_log_function = _library.gnutls_global_set_log_function
711
global_set_log_function.argtypes = [log_func]
712
global_set_log_function.restype = None
713
714
deinit = _library.gnutls_deinit
715
deinit.argtypes = [session_t]
716
deinit.restype = None
717
718
handshake = _library.gnutls_handshake
719
handshake.argtypes = [session_t]
720
handshake.restype = _error_code
721
handshake.errcheck = _retry_on_error
722
723
transport_set_ptr = _library.gnutls_transport_set_ptr
724
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
725
transport_set_ptr.restype = None
726
727
bye = _library.gnutls_bye
728
bye.argtypes = [session_t, close_request_t]
729
bye.restype = _error_code
730
bye.errcheck = _retry_on_error
731
732
check_version = _library.gnutls_check_version
733
check_version.argtypes = [ctypes.c_char_p]
734
check_version.restype = ctypes.c_char_p
735
736
_need_version = b"3.3.0"
737
if check_version(_need_version) is None:
738
raise self.Error("Needs GnuTLS {} or later"
739
.format(_need_version))
740
741
_tls_rawpk_version = b"3.6.6"
742
has_rawpk = bool(check_version(_tls_rawpk_version))
743
744
if has_rawpk:
745
# Types
746
class pubkey_st(ctypes.Structure):
747
_fields = []
748
pubkey_t = ctypes.POINTER(pubkey_st)
749
750
x509_crt_fmt_t = ctypes.c_int
751
752
# All the function declarations below are from gnutls/abstract.h
753
pubkey_init = _library.gnutls_pubkey_init
754
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
755
pubkey_init.restype = _error_code
756
757
pubkey_import = _library.gnutls_pubkey_import
758
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
759
x509_crt_fmt_t]
760
pubkey_import.restype = _error_code
761
762
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
763
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
764
ctypes.POINTER(ctypes.c_ubyte),
765
ctypes.POINTER(ctypes.c_size_t)]
766
pubkey_get_key_id.restype = _error_code
767
768
pubkey_deinit = _library.gnutls_pubkey_deinit
769
pubkey_deinit.argtypes = [pubkey_t]
770
pubkey_deinit.restype = None
771
else:
772
# All the function declarations below are from gnutls/openpgp.h
773
774
openpgp_crt_init = _library.gnutls_openpgp_crt_init
775
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
776
openpgp_crt_init.restype = _error_code
777
778
openpgp_crt_import = _library.gnutls_openpgp_crt_import
779
openpgp_crt_import.argtypes = [openpgp_crt_t,
780
ctypes.POINTER(datum_t),
781
openpgp_crt_fmt_t]
782
openpgp_crt_import.restype = _error_code
783
784
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
785
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
786
ctypes.POINTER(ctypes.c_uint)]
787
openpgp_crt_verify_self.restype = _error_code
788
789
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
790
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
791
openpgp_crt_deinit.restype = None
792
793
openpgp_crt_get_fingerprint = (
794
_library.gnutls_openpgp_crt_get_fingerprint)
795
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
796
ctypes.c_void_p,
797
ctypes.POINTER(
798
ctypes.c_size_t)]
799
openpgp_crt_get_fingerprint.restype = _error_code
800
801
if check_version(b"3.6.4"):
802
certificate_type_get2 = _library.gnutls_certificate_type_get2
803
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
804
certificate_type_get2.restype = _error_code
805
806
# Remove non-public functions
807
del _error_code, _retry_on_error
808
809
810
def call_pipe(connection, # : multiprocessing.Connection
811
func, *args, **kwargs):
812
"""This function is meant to be called by multiprocessing.Process
813
814
This function runs func(*args, **kwargs), and writes the resulting
815
return value on the provided multiprocessing.Connection.
816
"""
817
connection.send(func(*args, **kwargs))
818
connection.close()
819
820
274
821
class Client(object):
275
822
"""A representation of a client host served by this server.
276
823
277
824
Attributes:
278
_approved: bool(); 'None' if not yet approved/disapproved
825
approved: bool(); 'None' if not yet approved/disapproved
279
826
approval_delay: datetime.timedelta(); Time to wait for approval
280
827
approval_duration: datetime.timedelta(); Duration of one approval
281
checker: subprocess.Popen(); a running checker process used
282
to see if the client lives.
283
'None' if no process is running.
284
checker_callback_tag: a gobject event source tag, or None
828
checker: multiprocessing.Process(); a running checker process used
829
to see if the client lives. 'None' if no process is
830
running.
831
checker_callback_tag: a GLib event source tag, or None
285
832
checker_command: string; External command which is run to check
286
833
if client lives. %() expansions are done at
287
834
runtime with vars(self) as dict, so that for
288
835
instance %(name)s can be used in the command.
289
checker_initiator_tag: a gobject event source tag, or None
836
checker_initiator_tag: a GLib event source tag, or None
290
837
created: datetime.datetime(); (UTC) object creation
838
client_structure: Object describing what attributes a client has
839
and is used for storing the client at exit
291
840
current_checker_command: string; current running checker_command
292
disable_hook: If set, called by disable() as disable_hook(self)
293
disable_initiator_tag: a gobject event source tag, or None
841
disable_initiator_tag: a GLib event source tag, or None
294
842
enabled: bool()
295
843
fingerprint: string (40 or 32 hexadecimal digits); used to
296
uniquely identify the client
844
uniquely identify an OpenPGP client
845
key_id: string (64 hexadecimal digits); used to uniquely identify
846
a client using raw public keys
297
847
host: string; available for use by the checker command
298
848
interval: datetime.timedelta(); How often to start a new checker
299
849
last_approval_request: datetime.datetime(); (UTC) or None
300
850
last_checked_ok: datetime.datetime(); (UTC) or None
301
last_enabled: datetime.datetime(); (UTC)
851
last_checker_status: integer between 0 and 255 reflecting exit
852
status of last checker. -1 reflects crashed
853
checker, -2 means no checker completed yet.
854
last_checker_signal: The signal which killed the last checker, if
855
last_checker_status is -1
856
last_enabled: datetime.datetime(); (UTC) or None
302
857
name: string; from the config file, used in log messages and
303
858
D-Bus identifiers
304
859
secret: bytestring; sent verbatim (over TLS) to client
305
860
timeout: datetime.timedelta(); How long from last_checked_ok
306
861
until this client is disabled
307
extended_timeout: extra long timeout when password has been sent
862
extended_timeout: extra long timeout when secret has been sent
308
863
runtime_expansions: Allowed attributes for runtime expansion.
309
864
expires: datetime.datetime(); time (UTC) when a client will be
310
865
disabled, or None
866
server_settings: The server_settings dict from main()
311
867
"""
312
868
313
869
runtime_expansions = ("approval_delay", "approval_duration",
314
"created", "enabled", "fingerprint",
315
"host", "interval", "last_checked_ok",
870
"created", "enabled", "expires", "key_id",
871
"fingerprint", "host", "interval",
872
"last_approval_request", "last_checked_ok",
316
873
"last_enabled", "name", "timeout")
317
318
def timeout_milliseconds(self):
319
"Return the 'timeout' attribute in milliseconds"
320
return _timedelta_to_milliseconds(self.timeout)
321
322
def extended_timeout_milliseconds(self):
323
"Return the 'extended_timeout' attribute in milliseconds"
324
return _timedelta_to_milliseconds(self.extended_timeout)
325
326
def interval_milliseconds(self):
327
"Return the 'interval' attribute in milliseconds"
328
return _timedelta_to_milliseconds(self.interval)
329
330
def approval_delay_milliseconds(self):
331
return _timedelta_to_milliseconds(self.approval_delay)
332
333
def __init__(self, name = None, disable_hook=None, config=None):
334
"""Note: the 'checker' key in 'config' sets the
335
'checker_command' attribute and *not* the 'checker'
336
attribute."""
874
client_defaults = {
875
"timeout": "PT5M",
876
"extended_timeout": "PT15M",
877
"interval": "PT2M",
878
"checker": "fping -q -- %%(host)s",
879
"host": "",
880
"approval_delay": "PT0S",
881
"approval_duration": "PT1S",
882
"approved_by_default": "True",
883
"enabled": "True",
884
}
885
886
@staticmethod
887
def config_parser(config):
888
"""Construct a new dict of client settings of this form:
889
{ client_name: {setting_name: value, ...}, ...}
890
with exceptions for any special settings as defined above.
891
NOTE: Must be a pure function. Must return the same result
892
value given the same arguments.
893
"""
894
settings = {}
895
for client_name in config.sections():
896
section = dict(config.items(client_name))
897
client = settings[client_name] = {}
898
899
client["host"] = section["host"]
900
# Reformat values from string types to Python types
901
client["approved_by_default"] = config.getboolean(
902
client_name, "approved_by_default")
903
client["enabled"] = config.getboolean(client_name,
904
"enabled")
905
906
# Uppercase and remove spaces from key_id and fingerprint
907
# for later comparison purposes with return value from the
908
# key_id() and fingerprint() functions
909
client["key_id"] = (section.get("key_id", "").upper()
910
.replace(" ", ""))
911
client["fingerprint"] = (section["fingerprint"].upper()
912
.replace(" ", ""))
913
if "secret" in section:
914
client["secret"] = codecs.decode(section["secret"]
915
.encode("utf-8"),
916
"base64")
917
elif "secfile" in section:
918
with open(os.path.expanduser(os.path.expandvars
919
(section["secfile"])),
920
"rb") as secfile:
921
client["secret"] = secfile.read()
922
else:
923
raise TypeError("No secret or secfile for section {}"
924
.format(section))
925
client["timeout"] = string_to_delta(section["timeout"])
926
client["extended_timeout"] = string_to_delta(
927
section["extended_timeout"])
928
client["interval"] = string_to_delta(section["interval"])
929
client["approval_delay"] = string_to_delta(
930
section["approval_delay"])
931
client["approval_duration"] = string_to_delta(
932
section["approval_duration"])
933
client["checker_command"] = section["checker"]
934
client["last_approval_request"] = None
935
client["last_checked_ok"] = None
936
client["last_checker_status"] = -2
937
938
return settings
939
940
def __init__(self, settings, name=None, server_settings=None):
337
941
self.name = name
338
if config is None:
339
config = {}
942
if server_settings is None:
943
server_settings = {}
944
self.server_settings = server_settings
945
# adding all client settings
946
for setting, value in settings.items():
947
setattr(self, setting, value)
948
949
if self.enabled:
950
if not hasattr(self, "last_enabled"):
951
self.last_enabled = datetime.datetime.utcnow()
952
if not hasattr(self, "expires"):
953
self.expires = (datetime.datetime.utcnow()
954
+ self.timeout)
955
else:
956
self.last_enabled = None
957
self.expires = None
958
340
959
logger.debug("Creating client %r", self.name)
341
# Uppercase and remove spaces from fingerprint for later
342
# comparison purposes with return value from the fingerprint()
343
# function
344
self.fingerprint = (config["fingerprint"].upper()
345
.replace(" ", ""))
960
logger.debug(" Key ID: %s", self.key_id)
346
961
logger.debug(" Fingerprint: %s", self.fingerprint)
347
if "secret" in config:
348
self.secret = config["secret"].decode("base64")
349
elif "secfile" in config:
350
with open(os.path.expanduser(os.path.expandvars
351
(config["secfile"])),
352
"rb") as secfile:
353
self.secret = secfile.read()
354
else:
355
raise TypeError("No secret or secfile for client %s"
356
% self.name)
357
self.host = config.get("host", "")
358
self.created = datetime.datetime.utcnow()
359
self.enabled = False
360
self.last_approval_request = None
361
self.last_enabled = None
362
self.last_checked_ok = None
363
self.timeout = string_to_delta(config["timeout"])
364
self.extended_timeout = string_to_delta(config["extended_timeout"])
365
self.interval = string_to_delta(config["interval"])
366
self.disable_hook = disable_hook
962
self.created = settings.get("created",
963
datetime.datetime.utcnow())
964
965
# attributes specific for this server instance
367
966
self.checker = None
368
967
self.checker_initiator_tag = None
369
968
self.disable_initiator_tag = None
370
self.expires = None
371
969
self.checker_callback_tag = None
372
self.checker_command = config["checker"]
373
970
self.current_checker_command = None
374
self.last_connect = None
375
self._approved = None
376
self.approved_by_default = config.get("approved_by_default",
377
True)
971
self.approved = None
378
972
self.approvals_pending = 0
379
self.approval_delay = string_to_delta(
380
config["approval_delay"])
381
self.approval_duration = string_to_delta(
382
config["approval_duration"])
383
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
384
973
self.changedstate = multiprocessing_manager.Condition(
974
multiprocessing_manager.Lock())
975
self.client_structure = [attr
976
for attr in self.__dict__.keys()
977
if not attr.startswith("_")]
978
self.client_structure.append("client_structure")
979
980
for name, t in inspect.getmembers(
981
type(self), lambda obj: isinstance(obj, property)):
982
if not name.startswith("_"):
983
self.client_structure.append(name)
984
985
# Send notice to process children that client state has changed
385
986
def send_changedstate(self):
386
self.changedstate.acquire()
387
self.changedstate.notify_all()
388
self.changedstate.release()
389
987
with self.changedstate:
988
self.changedstate.notify_all()
989
390
990
def enable(self):
391
991
"""Start this client's checker and timeout hooks"""
392
992
if getattr(self, "enabled", False):
393
993
# Already enabled
394
994
return
395
self.send_changedstate()
396
# Schedule a new checker to be started an 'interval' from now,
397
# and every interval from then on.
398
self.checker_initiator_tag = (gobject.timeout_add
399
(self.interval_milliseconds(),
400
self.start_checker))
401
# Schedule a disable() when 'timeout' has passed
402
995
self.expires = datetime.datetime.utcnow() + self.timeout
403
self.disable_initiator_tag = (gobject.timeout_add
404
(self.timeout_milliseconds(),
405
self.disable))
406
996
self.enabled = True
407
997
self.last_enabled = datetime.datetime.utcnow()
408
# Also start a new checker *right now*.
409
self.start_checker()
410
998
self.init_checker()
999
self.send_changedstate()
1000
411
1001
def disable(self, quiet=True):
412
1002
"""Disable this client."""
413
1003
if not getattr(self, "enabled", False):
414
1004
return False
415
1005
if not quiet:
416
self.send_changedstate()
417
if not quiet:
418
1006
logger.info("Disabling client %s", self.name)
419
if getattr(self, "disable_initiator_tag", False):
420
gobject.source_remove(self.disable_initiator_tag)
1007
if getattr(self, "disable_initiator_tag", None) is not None:
1008
GLib.source_remove(self.disable_initiator_tag)
421
1009
self.disable_initiator_tag = None
422
1010
self.expires = None
423
if getattr(self, "checker_initiator_tag", False):
424
gobject.source_remove(self.checker_initiator_tag)
1011
if getattr(self, "checker_initiator_tag", None) is not None:
1012
GLib.source_remove(self.checker_initiator_tag)
425
1013
self.checker_initiator_tag = None
426
1014
self.stop_checker()
427
if self.disable_hook:
428
self.disable_hook(self)
429
1015
self.enabled = False
430
# Do not run this again if called by a gobject.timeout_add
1016
if not quiet:
1017
self.send_changedstate()
1018
# Do not run this again if called by a GLib.timeout_add
431
1019
return False
432
1020
433
1021
def __del__(self):
434
self.disable_hook = None
435
1022
self.disable()
436
437
def checker_callback(self, pid, condition, command):
1023
1024
def init_checker(self):
1025
# Schedule a new checker to be started an 'interval' from now,
1026
# and every interval from then on.
1027
if self.checker_initiator_tag is not None:
1028
GLib.source_remove(self.checker_initiator_tag)
1029
self.checker_initiator_tag = GLib.timeout_add(
1030
int(self.interval.total_seconds() * 1000),
1031
self.start_checker)
1032
# Schedule a disable() when 'timeout' has passed
1033
if self.disable_initiator_tag is not None:
1034
GLib.source_remove(self.disable_initiator_tag)
1035
self.disable_initiator_tag = GLib.timeout_add(
1036
int(self.timeout.total_seconds() * 1000), self.disable)
1037
# Also start a new checker *right now*.
1038
self.start_checker()
1039
1040
def checker_callback(self, source, condition, connection,
1041
command):
438
1042
"""The checker has completed, so take appropriate actions."""
1043
# Read return code from connection (see call_pipe)
1044
returncode = connection.recv()
1045
connection.close()
1046
self.checker.join()
439
1047
self.checker_callback_tag = None
440
1048
self.checker = None
441
if os.WIFEXITED(condition):
442
exitstatus = os.WEXITSTATUS(condition)
443
if exitstatus == 0:
1049
1050
if returncode >= 0:
1051
self.last_checker_status = returncode
1052
self.last_checker_signal = None
1053
if self.last_checker_status == 0:
444
1054
logger.info("Checker for %(name)s succeeded",
445
1055
vars(self))
446
1056
self.checked_ok()
447
1057
else:
448
logger.info("Checker for %(name)s failed",
449
vars(self))
1058
logger.info("Checker for %(name)s failed", vars(self))
450
1059
else:
1060
self.last_checker_status = -1
1061
self.last_checker_signal = -returncode
451
1062
logger.warning("Checker for %(name)s crashed?",
452
1063
vars(self))
453
454
def checked_ok(self, timeout=None):
455
"""Bump up the timeout for this client.
456
457
This should only be called when the client has been seen,
458
alive and well.
459
"""
1064
return False
1065
1066
def checked_ok(self):
1067
"""Assert that the client has been seen, alive and well."""
1068
self.last_checked_ok = datetime.datetime.utcnow()
1069
self.last_checker_status = 0
1070
self.last_checker_signal = None
1071
self.bump_timeout()
1072
1073
def bump_timeout(self, timeout=None):
1074
"""Bump up the timeout for this client."""
460
1075
if timeout is None:
461
1076
timeout = self.timeout
462
self.last_checked_ok = datetime.datetime.utcnow()
463
gobject.source_remove(self.disable_initiator_tag)
464
self.expires = datetime.datetime.utcnow() + timeout
465
self.disable_initiator_tag = (gobject.timeout_add
466
(_timedelta_to_milliseconds(timeout),
467
self.disable))
468
1077
if self.disable_initiator_tag is not None:
1078
GLib.source_remove(self.disable_initiator_tag)
1079
self.disable_initiator_tag = None
1080
if getattr(self, "enabled", False):
1081
self.disable_initiator_tag = GLib.timeout_add(
1082
int(timeout.total_seconds() * 1000), self.disable)
1083
self.expires = datetime.datetime.utcnow() + timeout
1084
469
1085
def need_approval(self):
470
1086
self.last_approval_request = datetime.datetime.utcnow()
471
1087
472
1088
def start_checker(self):
473
1089
"""Start a new checker subprocess if one is not running.
474
1090
475
1091
If a checker already exists, leave it running and do
476
1092
nothing."""
477
1093
# The reason for not killing a running checker is that if we
478
# did that, then if a checker (for some reason) started
479
# running slowly and taking more than 'interval' time, the
480
# client would inevitably timeout, since no checker would get
481
# a chance to run to completion. If we instead leave running
1094
# did that, and if a checker (for some reason) started running
1095
# slowly and taking more than 'interval' time, then the client
1096
# would inevitably timeout, since no checker would get a
1097
# chance to run to completion. If we instead leave running
482
1098
# checkers alone, the checker would have to take more time
483
1099
# than 'timeout' for the client to be disabled, which is as it
484
1100
# should be.
485
486
# If a checker exists, make sure it is not a zombie
487
try:
488
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
489
except (AttributeError, OSError) as error:
490
if (isinstance(error, OSError)
491
and error.errno != errno.ECHILD):
492
raise error
493
else:
494
if pid:
495
logger.warning("Checker was a zombie")
496
gobject.source_remove(self.checker_callback_tag)
497
self.checker_callback(pid, status,
498
self.current_checker_command)
1101
1102
if self.checker is not None and not self.checker.is_alive():
1103
logger.warning("Checker was not alive; joining")
1104
self.checker.join()
1105
self.checker = None
499
1106
# Start a new checker if needed
500
1107
if self.checker is None:
1108
# Escape attributes for the shell
1109
escaped_attrs = {
1110
attr: re.escape(str(getattr(self, attr)))
1111
for attr in self.runtime_expansions}
501
1112
try:
502
# In case checker_command has exactly one % operator
503
command = self.checker_command % self.host
504
except TypeError:
505
# Escape attributes for the shell
506
escaped_attrs = dict(
507
(attr,
508
re.escape(unicode(str(getattr(self, attr, "")),
509
errors=
510
'replace')))
511
for attr in
512
self.runtime_expansions)
513
514
try:
515
command = self.checker_command % escaped_attrs
516
except TypeError as error:
517
logger.error('Could not format string "%s":'
518
' %s', self.checker_command, error)
519
return True # Try again later
1113
command = self.checker_command % escaped_attrs
1114
except TypeError as error:
1115
logger.error('Could not format string "%s"',
1116
self.checker_command,
1117
exc_info=error)
1118
return True # Try again later
520
1119
self.current_checker_command = command
521
try:
522
logger.info("Starting checker %r for %s",
523
command, self.name)
524
# We don't need to redirect stdout and stderr, since
525
# in normal mode, that is already done by daemon(),
526
# and in debug mode we don't want to. (Stdin is
527
# always replaced by /dev/null.)
528
self.checker = subprocess.Popen(command,
529
close_fds=True,
530
shell=True, cwd="/")
531
self.checker_callback_tag = (gobject.child_watch_add
532
(self.checker.pid,
533
self.checker_callback,
534
data=command))
535
# The checker may have completed before the gobject
536
# watch was added. Check for this.
537
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
538
if pid:
539
gobject.source_remove(self.checker_callback_tag)
540
self.checker_callback(pid, status, command)
541
except OSError as error:
542
logger.error("Failed to start subprocess: %s",
543
error)
544
# Re-run this periodically if run by gobject.timeout_add
1120
logger.info("Starting checker %r for %s", command,
1121
self.name)
1122
# We don't need to redirect stdout and stderr, since
1123
# in normal mode, that is already done by daemon(),
1124
# and in debug mode we don't want to. (Stdin is
1125
# always replaced by /dev/null.)
1126
# The exception is when not debugging but nevertheless
1127
# running in the foreground; use the previously
1128
# created wnull.
1129
popen_args = {"close_fds": True,
1130
"shell": True,
1131
"cwd": "/"}
1132
if (not self.server_settings["debug"]
1133
and self.server_settings["foreground"]):
1134
popen_args.update({"stdout": wnull,
1135
"stderr": wnull})
1136
pipe = multiprocessing.Pipe(duplex=False)
1137
self.checker = multiprocessing.Process(
1138
target=call_pipe,
1139
args=(pipe[1], subprocess.call, command),
1140
kwargs=popen_args)
1141
self.checker.start()
1142
self.checker_callback_tag = GLib.io_add_watch(
1143
pipe[0].fileno(), GLib.IO_IN,
1144
self.checker_callback, pipe[0], command)
1145
# Re-run this periodically if run by GLib.timeout_add
545
1146
return True
546
1147
547
1148
def stop_checker(self):
548
1149
"""Force the checker process, if any, to stop."""
549
1150
if self.checker_callback_tag:
550
gobject.source_remove(self.checker_callback_tag)
1151
GLib.source_remove(self.checker_callback_tag)
551
1152
self.checker_callback_tag = None
552
1153
if getattr(self, "checker", None) is None:
553
1154
return
554
1155
logger.debug("Stopping checker for %(name)s", vars(self))
555
try:
556
os.kill(self.checker.pid, signal.SIGTERM)
557
#time.sleep(0.5)
558
#if self.checker.poll() is None:
559
# os.kill(self.checker.pid, signal.SIGKILL)
560
except OSError as error:
561
if error.errno != errno.ESRCH: # No such process
562
raise
1156
self.checker.terminate()
563
1157
self.checker = None
564
1158
565
1159
566
def dbus_service_property(dbus_interface, signature="v",
567
access="readwrite", byte_arrays=False):
1160
def dbus_service_property(dbus_interface,
1161
signature="v",
1162
access="readwrite",
1163
byte_arrays=False):
568
1164
"""Decorators for marking methods of a DBusObjectWithProperties to
569
1165
become properties on the D-Bus.
570
1166
571
1167
The decorated method will be called with no arguments by "Get"
572
1168
and with one argument by "Set".
573
1169
574
1170
The parameters, where they are supported, are the same as
575
1171
dbus.service.method, except there is only "signature", since the
576
1172
type from Get() and the type sent to Set() is the same.
579
1175
# "Set" method, so we fail early here:
580
1176
if byte_arrays and signature != "ay":
581
1177
raise ValueError("Byte arrays not supported for non-'ay'"
582
" signature %r" % signature)
1178
" signature {!r}".format(signature))
1179
583
1180
def decorator(func):
584
1181
func._dbus_is_property = True
585
1182
func._dbus_interface = dbus_interface
588
1185
func._dbus_name = func.__name__
589
1186
if func._dbus_name.endswith("_dbus_property"):
590
1187
func._dbus_name = func._dbus_name[:-14]
591
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
592
return func
1188
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
1189
return func
1190
1191
return decorator
1192
1193
1194
def dbus_interface_annotations(dbus_interface):
1195
"""Decorator for marking functions returning interface annotations
1196
1197
Usage:
1198
1199
@dbus_interface_annotations("org.example.Interface")
1200
def _foo(self): # Function name does not matter
1201
return {"org.freedesktop.DBus.Deprecated": "true",
1202
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1203
"false"}
1204
"""
1205
1206
def decorator(func):
1207
func._dbus_is_interface = True
1208
func._dbus_interface = dbus_interface
1209
func._dbus_name = dbus_interface
1210
return func
1211
1212
return decorator
1213
1214
1215
def dbus_annotations(annotations):
1216
"""Decorator to annotate D-Bus methods, signals or properties
1217
Usage:
1218
1219
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1220
"org.freedesktop.DBus.Property."
1221
"EmitsChangedSignal": "false"})
1222
@dbus_service_property("org.example.Interface", signature="b",
1223
access="r")
1224
def Property_dbus_property(self):
1225
return dbus.Boolean(False)
1226
1227
See also the DBusObjectWithAnnotations class.
1228
"""
1229
1230
def decorator(func):
1231
func._dbus_annotations = annotations
1232
return func
1233
593
1234
return decorator
594
1235
595
1236
596
1237
class DBusPropertyException(dbus.exceptions.DBusException):
597
1238
"""A base class for D-Bus property-related exceptions
598
1239
"""
599
def __unicode__(self):
600
return unicode(str(self))
1240
pass
601
1241
602
1242
603
1243
class DBusPropertyAccessException(DBusPropertyException):
612
1252
pass
613
1253
614
1254
615
class DBusObjectWithProperties(dbus.service.Object):
1255
class DBusObjectWithAnnotations(dbus.service.Object):
1256
"""A D-Bus object with annotations.
1257
1258
Classes inheriting from this can use the dbus_annotations
1259
decorator to add annotations to methods or signals.
1260
"""
1261
1262
@staticmethod
1263
def _is_dbus_thing(thing):
1264
"""Returns a function testing if an attribute is a D-Bus thing
1265
1266
If called like _is_dbus_thing("method") it returns a function
1267
suitable for use as predicate to inspect.getmembers().
1268
"""
1269
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1270
False)
1271
1272
def _get_all_dbus_things(self, thing):
1273
"""Returns a generator of (name, attribute) pairs
1274
"""
1275
return ((getattr(athing.__get__(self), "_dbus_name", name),
1276
athing.__get__(self))
1277
for cls in self.__class__.__mro__
1278
for name, athing in
1279
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1280
1281
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1282
out_signature="s",
1283
path_keyword='object_path',
1284
connection_keyword='connection')
1285
def Introspect(self, object_path, connection):
1286
"""Overloading of standard D-Bus method.
1287
1288
Inserts annotation tags on methods and signals.
1289
"""
1290
xmlstring = dbus.service.Object.Introspect(self, object_path,
1291
connection)
1292
try:
1293
document = xml.dom.minidom.parseString(xmlstring)
1294
1295
for if_tag in document.getElementsByTagName("interface"):
1296
# Add annotation tags
1297
for typ in ("method", "signal"):
1298
for tag in if_tag.getElementsByTagName(typ):
1299
annots = dict()
1300
for name, prop in (self.
1301
_get_all_dbus_things(typ)):
1302
if (name == tag.getAttribute("name")
1303
and prop._dbus_interface
1304
== if_tag.getAttribute("name")):
1305
annots.update(getattr(
1306
prop, "_dbus_annotations", {}))
1307
for name, value in annots.items():
1308
ann_tag = document.createElement(
1309
"annotation")
1310
ann_tag.setAttribute("name", name)
1311
ann_tag.setAttribute("value", value)
1312
tag.appendChild(ann_tag)
1313
# Add interface annotation tags
1314
for annotation, value in dict(
1315
itertools.chain.from_iterable(
1316
annotations().items()
1317
for name, annotations
1318
in self._get_all_dbus_things("interface")
1319
if name == if_tag.getAttribute("name")
1320
)).items():
1321
ann_tag = document.createElement("annotation")
1322
ann_tag.setAttribute("name", annotation)
1323
ann_tag.setAttribute("value", value)
1324
if_tag.appendChild(ann_tag)
1325
# Fix argument name for the Introspect method itself
1326
if (if_tag.getAttribute("name")
1327
== dbus.INTROSPECTABLE_IFACE):
1328
for cn in if_tag.getElementsByTagName("method"):
1329
if cn.getAttribute("name") == "Introspect":
1330
for arg in cn.getElementsByTagName("arg"):
1331
if (arg.getAttribute("direction")
1332
== "out"):
1333
arg.setAttribute("name",
1334
"xml_data")
1335
xmlstring = document.toxml("utf-8")
1336
document.unlink()
1337
except (AttributeError, xml.dom.DOMException,
1338
xml.parsers.expat.ExpatError) as error:
1339
logger.error("Failed to override Introspection method",
1340
exc_info=error)
1341
return xmlstring
1342
1343
1344
class DBusObjectWithProperties(DBusObjectWithAnnotations):
616
1345
"""A D-Bus object with properties.
617
1346
618
1347
Classes inheriting from this can use the dbus_service_property
619
1348
decorator to expose methods as D-Bus properties. It exposes the
620
1349
standard Get(), Set(), and GetAll() methods on the D-Bus.
621
1350
"""
622
623
@staticmethod
624
def _is_dbus_property(obj):
625
return getattr(obj, "_dbus_is_property", False)
626
627
def _get_all_dbus_properties(self):
628
"""Returns a generator of (name, attribute) pairs
629
"""
630
return ((prop._dbus_name, prop)
631
for name, prop in
632
inspect.getmembers(self, self._is_dbus_property))
633
634
# def _get_dbus_property(self, interface_name, property_name):
635
# """Returns a bound method if one exists which is a D-Bus
636
# property with the specified name and interface.
637
# """
638
# print("get_property({0!r}, {1!r}".format(interface_name, property_name),file=sys.stderr)
639
# print(dir(self), sys.stderr)
640
# for name in (property_name,
641
# property_name + "_dbus_property"):
642
# prop = getattr(self, name, None)
643
# if (prop is None
644
# or not self._is_dbus_property(prop)
645
# or prop._dbus_name != property_name
646
# or (interface_name and prop._dbus_interface
647
# and interface_name != prop._dbus_interface)):
648
# continue
649
# return prop
650
# # No such property
651
# raise DBusPropertyNotFound(self.dbus_object_path + ":"
652
# + interface_name + "."
653
# + property_name)
654
1351
655
1352
def _get_dbus_property(self, interface_name, property_name):
656
1353
"""Returns a bound method if one exists which is a D-Bus
657
1354
property with the specified name and interface.
658
1355
"""
659
for name, value in inspect.getmembers(self, self._is_dbus_property):
660
if value._dbus_name == property_name and value._dbus_interface == interface_name:
661
return value
662
1356
for cls in self.__class__.__mro__:
1357
for name, value in inspect.getmembers(
1358
cls, self._is_dbus_thing("property")):
1359
if (value._dbus_name == property_name
1360
and value._dbus_interface == interface_name):
1361
return value.__get__(self)
1362
663
1363
# No such property
664
raise DBusPropertyNotFound(self.dbus_object_path + ":"
665
+ interface_name + "."
666
+ property_name)
667
668
669
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1364
raise DBusPropertyNotFound("{}:{}.{}".format(
1365
self.dbus_object_path, interface_name, property_name))
1366
1367
@classmethod
1368
def _get_all_interface_names(cls):
1369
"""Get a sequence of all interfaces supported by an object"""
1370
return (name for name in set(getattr(getattr(x, attr),
1371
"_dbus_interface", None)
1372
for x in (inspect.getmro(cls))
1373
for attr in dir(x))
1374
if name is not None)
1375
1376
@dbus.service.method(dbus.PROPERTIES_IFACE,
1377
in_signature="ss",
670
1378
out_signature="v")
671
1379
def Get(self, interface_name, property_name):
672
1380
"""Standard D-Bus property Get() method, see D-Bus standard.
678
1386
if not hasattr(value, "variant_level"):
679
1387
return value
680
1388
return type(value)(value, variant_level=value.variant_level+1)
681
1389
682
1390
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
683
1391
def Set(self, interface_name, property_name, value):
684
1392
"""Standard D-Bus property Set() method, see D-Bus standard.
690
1398
# The byte_arrays option is not supported yet on
691
1399
# signatures other than "ay".
692
1400
if prop._dbus_signature != "ay":
693
raise ValueError
694
value = dbus.ByteArray(''.join(unichr(byte)
695
for byte in value))
1401
raise ValueError("Byte arrays not supported for non-"
1402
"'ay' signature {!r}"
1403
.format(prop._dbus_signature))
1404
value = dbus.ByteArray(b''.join(chr(byte)
1405
for byte in value))
696
1406
prop(value)
697
698
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1407
1408
@dbus.service.method(dbus.PROPERTIES_IFACE,
1409
in_signature="s",
699
1410
out_signature="a{sv}")
700
1411
def GetAll(self, interface_name):
701
1412
"""Standard D-Bus property GetAll() method, see D-Bus
702
1413
standard.
703
1414
704
1415
Note: Will not include properties with access="write".
705
1416
"""
706
all = {}
707
for name, prop in self._get_all_dbus_properties():
1417
properties = {}
1418
for name, prop in self._get_all_dbus_things("property"):
708
1419
if (interface_name
709
1420
and interface_name != prop._dbus_interface):
710
1421
# Interface non-empty but did not match
714
1425
continue
715
1426
value = prop()
716
1427
if not hasattr(value, "variant_level"):
717
all[name] = value
1428
properties[name] = value
718
1429
continue
719
all[name] = type(value)(value, variant_level=
720
value.variant_level+1)
721
return dbus.Dictionary(all, signature="sv")
722
1430
properties[name] = type(value)(
1431
value, variant_level=value.variant_level + 1)
1432
return dbus.Dictionary(properties, signature="sv")
1433
1434
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1435
def PropertiesChanged(self, interface_name, changed_properties,
1436
invalidated_properties):
1437
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1438
standard.
1439
"""
1440
pass
1441
723
1442
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
724
1443
out_signature="s",
725
1444
path_keyword='object_path',
726
1445
connection_keyword='connection')
727
1446
def Introspect(self, object_path, connection):
728
"""Standard D-Bus method, overloaded to insert property tags.
1447
"""Overloading of standard D-Bus method.
1448
1449
Inserts property tags and interface annotation tags.
729
1450
"""
730
xmlstring = dbus.service.Object.Introspect(self, object_path,
731
connection)
1451
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1452
object_path,
1453
connection)
732
1454
try:
733
1455
document = xml.dom.minidom.parseString(xmlstring)
1456
734
1457
def make_tag(document, name, prop):
735
1458
e = document.createElement("property")
736
1459
e.setAttribute("name", name)
737
1460
e.setAttribute("type", prop._dbus_signature)
738
1461
e.setAttribute("access", prop._dbus_access)
739
1462
return e
1463
740
1464
for if_tag in document.getElementsByTagName("interface"):
1465
# Add property tags
741
1466
for tag in (make_tag(document, name, prop)
742
1467
for name, prop
743
in self._get_all_dbus_properties()
1468
in self._get_all_dbus_things("property")
744
1469
if prop._dbus_interface
745
1470
== if_tag.getAttribute("name")):
746
1471
if_tag.appendChild(tag)
1472
# Add annotation tags for properties
1473
for tag in if_tag.getElementsByTagName("property"):
1474
annots = dict()
1475
for name, prop in self._get_all_dbus_things(
1476
"property"):
1477
if (name == tag.getAttribute("name")
1478
and prop._dbus_interface
1479
== if_tag.getAttribute("name")):
1480
annots.update(getattr(
1481
prop, "_dbus_annotations", {}))
1482
for name, value in annots.items():
1483
ann_tag = document.createElement(
1484
"annotation")
1485
ann_tag.setAttribute("name", name)
1486
ann_tag.setAttribute("value", value)
1487
tag.appendChild(ann_tag)
747
1488
# Add the names to the return values for the
748
1489
# "org.freedesktop.DBus.Properties" methods
749
1490
if (if_tag.getAttribute("name")
764
1505
except (AttributeError, xml.dom.DOMException,
765
1506
xml.parsers.expat.ExpatError) as error:
766
1507
logger.error("Failed to override Introspection method",
767
error)
768
return xmlstring
769
770
771
def datetime_to_dbus (dt, variant_level=0):
1508
exc_info=error)
1509
return xmlstring
1510
1511
1512
try:
1513
dbus.OBJECT_MANAGER_IFACE
1514
except AttributeError:
1515
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1516
1517
1518
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1519
"""A D-Bus object with an ObjectManager.
1520
1521
Classes inheriting from this exposes the standard
1522
GetManagedObjects call and the InterfacesAdded and
1523
InterfacesRemoved signals on the standard
1524
"org.freedesktop.DBus.ObjectManager" interface.
1525
1526
Note: No signals are sent automatically; they must be sent
1527
manually.
1528
"""
1529
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1530
out_signature="a{oa{sa{sv}}}")
1531
def GetManagedObjects(self):
1532
"""This function must be overridden"""
1533
raise NotImplementedError()
1534
1535
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1536
signature="oa{sa{sv}}")
1537
def InterfacesAdded(self, object_path, interfaces_and_properties):
1538
pass
1539
1540
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1541
def InterfacesRemoved(self, object_path, interfaces):
1542
pass
1543
1544
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1545
out_signature="s",
1546
path_keyword='object_path',
1547
connection_keyword='connection')
1548
def Introspect(self, object_path, connection):
1549
"""Overloading of standard D-Bus method.
1550
1551
Override return argument name of GetManagedObjects to be
1552
"objpath_interfaces_and_properties"
1553
"""
1554
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1555
object_path,
1556
connection)
1557
try:
1558
document = xml.dom.minidom.parseString(xmlstring)
1559
1560
for if_tag in document.getElementsByTagName("interface"):
1561
# Fix argument name for the GetManagedObjects method
1562
if (if_tag.getAttribute("name")
1563
== dbus.OBJECT_MANAGER_IFACE):
1564
for cn in if_tag.getElementsByTagName("method"):
1565
if (cn.getAttribute("name")
1566
== "GetManagedObjects"):
1567
for arg in cn.getElementsByTagName("arg"):
1568
if (arg.getAttribute("direction")
1569
== "out"):
1570
arg.setAttribute(
1571
"name",
1572
"objpath_interfaces"
1573
"_and_properties")
1574
xmlstring = document.toxml("utf-8")
1575
document.unlink()
1576
except (AttributeError, xml.dom.DOMException,
1577
xml.parsers.expat.ExpatError) as error:
1578
logger.error("Failed to override Introspection method",
1579
exc_info=error)
1580
return xmlstring
1581
1582
1583
def datetime_to_dbus(dt, variant_level=0):
772
1584
"""Convert a UTC datetime.datetime() to a D-Bus type."""
773
1585
if dt is None:
774
return dbus.String("", variant_level = variant_level)
775
return dbus.String(dt.isoformat(),
776
variant_level=variant_level)
777
778
class transitional_clientdbus(DBusObjectWithProperties.__metaclass__):
779
def __new__(mcs, name, bases, attr):
780
for key, old_dbusobj in attr.items():
781
new_interface = getattr(old_dbusobj, "_dbus_interface", "").replace("se.bsnet.fukt.", "se.recompile.")
782
if getattr(old_dbusobj, "_dbus_is_signal", False):
783
unwrappedfunc = dict(zip(old_dbusobj.func_code.co_freevars,
784
old_dbusobj.__closure__))["func"].cell_contents
785
newfunc = types.FunctionType(unwrappedfunc.func_code,
786
unwrappedfunc.func_globals,
787
unwrappedfunc.func_name,
788
unwrappedfunc.func_defaults,
789
unwrappedfunc.func_closure)
790
new_dbusfunc = dbus.service.signal(
791
new_interface, old_dbusobj._dbus_signature)(newfunc)
792
attr["_transitional_{0}_1".format(key)] = new_dbusfunc
793
attr["_transitional_{0}_0".format(key)] = old_dbusobj
794
def fixscope(func1, func2):
795
def newcall(*args, **kwargs):
796
func1(*args, **kwargs)
797
func2(*args, **kwargs)
798
return newcall
799
800
attr[key] = fixscope(
801
old_dbusobj, attr["_transitional_{0}_1".format(key)])
802
803
if getattr(old_dbusobj, "_dbus_is_method", False):
804
new_dbusfunc = (dbus.service.method
805
(new_interface,
806
old_dbusobj._dbus_in_signature,
807
old_dbusobj._dbus_out_signature)
808
(types.FunctionType
809
(old_dbusobj.func_code,
810
old_dbusobj.func_globals,
811
old_dbusobj.func_name,
812
old_dbusobj.func_defaults,
813
old_dbusobj.func_closure)))
814
815
attr["_transitional_{0}".format(key)] = new_dbusfunc
816
if getattr(old_dbusobj, "_dbus_is_property", False):
817
new_dbusfunc = (dbus_service_property
818
(new_interface,
819
old_dbusobj._dbus_signature,
820
old_dbusobj._dbus_access,
821
old_dbusobj._dbus_get_args_options["byte_arrays"])
822
(types.FunctionType
823
(old_dbusobj.func_code,
824
old_dbusobj.func_globals,
825
old_dbusobj.func_name,
826
old_dbusobj.func_defaults,
827
old_dbusobj.func_closure)))
828
829
attr["_transitional_{0}".format(key)] = new_dbusfunc
830
return type.__new__(mcs, name, bases, attr)
831
1586
return dbus.String("", variant_level=variant_level)
1587
return dbus.String(dt.isoformat(), variant_level=variant_level)
1588
1589
1590
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1591
"""A class decorator; applied to a subclass of
1592
dbus.service.Object, it will add alternate D-Bus attributes with
1593
interface names according to the "alt_interface_names" mapping.
1594
Usage:
1595
1596
@alternate_dbus_interfaces({"org.example.Interface":
1597
"net.example.AlternateInterface"})
1598
class SampleDBusObject(dbus.service.Object):
1599
@dbus.service.method("org.example.Interface")
1600
def SampleDBusMethod():
1601
pass
1602
1603
The above "SampleDBusMethod" on "SampleDBusObject" will be
1604
reachable via two interfaces: "org.example.Interface" and
1605
"net.example.AlternateInterface", the latter of which will have
1606
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1607
"true", unless "deprecate" is passed with a False value.
1608
1609
This works for methods and signals, and also for D-Bus properties
1610
(from DBusObjectWithProperties) and interfaces (from the
1611
dbus_interface_annotations decorator).
1612
"""
1613
1614
def wrapper(cls):
1615
for orig_interface_name, alt_interface_name in (
1616
alt_interface_names.items()):
1617
attr = {}
1618
interface_names = set()
1619
# Go though all attributes of the class
1620
for attrname, attribute in inspect.getmembers(cls):
1621
# Ignore non-D-Bus attributes, and D-Bus attributes
1622
# with the wrong interface name
1623
if (not hasattr(attribute, "_dbus_interface")
1624
or not attribute._dbus_interface.startswith(
1625
orig_interface_name)):
1626
continue
1627
# Create an alternate D-Bus interface name based on
1628
# the current name
1629
alt_interface = attribute._dbus_interface.replace(
1630
orig_interface_name, alt_interface_name)
1631
interface_names.add(alt_interface)
1632
# Is this a D-Bus signal?
1633
if getattr(attribute, "_dbus_is_signal", False):
1634
# Extract the original non-method undecorated
1635
# function by black magic
1636
if sys.version_info.major == 2:
1637
nonmethod_func = (dict(
1638
zip(attribute.func_code.co_freevars,
1639
attribute.__closure__))
1640
["func"].cell_contents)
1641
else:
1642
nonmethod_func = (dict(
1643
zip(attribute.__code__.co_freevars,
1644
attribute.__closure__))
1645
["func"].cell_contents)
1646
# Create a new, but exactly alike, function
1647
# object, and decorate it to be a new D-Bus signal
1648
# with the alternate D-Bus interface name
1649
new_function = copy_function(nonmethod_func)
1650
new_function = (dbus.service.signal(
1651
alt_interface,
1652
attribute._dbus_signature)(new_function))
1653
# Copy annotations, if any
1654
try:
1655
new_function._dbus_annotations = dict(
1656
attribute._dbus_annotations)
1657
except AttributeError:
1658
pass
1659
1660
# Define a creator of a function to call both the
1661
# original and alternate functions, so both the
1662
# original and alternate signals gets sent when
1663
# the function is called
1664
def fixscope(func1, func2):
1665
"""This function is a scope container to pass
1666
func1 and func2 to the "call_both" function
1667
outside of its arguments"""
1668
1669
@functools.wraps(func2)
1670
def call_both(*args, **kwargs):
1671
"""This function will emit two D-Bus
1672
signals by calling func1 and func2"""
1673
func1(*args, **kwargs)
1674
func2(*args, **kwargs)
1675
# Make wrapper function look like a D-Bus
1676
# signal
1677
for name, attr in inspect.getmembers(func2):
1678
if name.startswith("_dbus_"):
1679
setattr(call_both, name, attr)
1680
1681
return call_both
1682
# Create the "call_both" function and add it to
1683
# the class
1684
attr[attrname] = fixscope(attribute, new_function)
1685
# Is this a D-Bus method?
1686
elif getattr(attribute, "_dbus_is_method", False):
1687
# Create a new, but exactly alike, function
1688
# object. Decorate it to be a new D-Bus method
1689
# with the alternate D-Bus interface name. Add it
1690
# to the class.
1691
attr[attrname] = (
1692
dbus.service.method(
1693
alt_interface,
1694
attribute._dbus_in_signature,
1695
attribute._dbus_out_signature)
1696
(copy_function(attribute)))
1697
# Copy annotations, if any
1698
try:
1699
attr[attrname]._dbus_annotations = dict(
1700
attribute._dbus_annotations)
1701
except AttributeError:
1702
pass
1703
# Is this a D-Bus property?
1704
elif getattr(attribute, "_dbus_is_property", False):
1705
# Create a new, but exactly alike, function
1706
# object, and decorate it to be a new D-Bus
1707
# property with the alternate D-Bus interface
1708
# name. Add it to the class.
1709
attr[attrname] = (dbus_service_property(
1710
alt_interface, attribute._dbus_signature,
1711
attribute._dbus_access,
1712
attribute._dbus_get_args_options
1713
["byte_arrays"])
1714
(copy_function(attribute)))
1715
# Copy annotations, if any
1716
try:
1717
attr[attrname]._dbus_annotations = dict(
1718
attribute._dbus_annotations)
1719
except AttributeError:
1720
pass
1721
# Is this a D-Bus interface?
1722
elif getattr(attribute, "_dbus_is_interface", False):
1723
# Create a new, but exactly alike, function
1724
# object. Decorate it to be a new D-Bus interface
1725
# with the alternate D-Bus interface name. Add it
1726
# to the class.
1727
attr[attrname] = (
1728
dbus_interface_annotations(alt_interface)
1729
(copy_function(attribute)))
1730
if deprecate:
1731
# Deprecate all alternate interfaces
1732
iname = "_AlternateDBusNames_interface_annotation{}"
1733
for interface_name in interface_names:
1734
1735
@dbus_interface_annotations(interface_name)
1736
def func(self):
1737
return {"org.freedesktop.DBus.Deprecated":
1738
"true"}
1739
# Find an unused name
1740
for aname in (iname.format(i)
1741
for i in itertools.count()):
1742
if aname not in attr:
1743
attr[aname] = func
1744
break
1745
if interface_names:
1746
# Replace the class with a new subclass of it with
1747
# methods, signals, etc. as created above.
1748
if sys.version_info.major == 2:
1749
cls = type(b"{}Alternate".format(cls.__name__),
1750
(cls, ), attr)
1751
else:
1752
cls = type("{}Alternate".format(cls.__name__),
1753
(cls, ), attr)
1754
return cls
1755
1756
return wrapper
1757
1758
1759
@alternate_dbus_interfaces({"se.recompile.Mandos":
1760
"se.bsnet.fukt.Mandos"})
832
1761
class ClientDBus(Client, DBusObjectWithProperties):
833
1762
"""A Client class using D-Bus
834
1763
835
1764
Attributes:
836
1765
dbus_object_path: dbus.ObjectPath
837
1766
bus: dbus.SystemBus()
838
1767
"""
839
1768
840
1769
runtime_expansions = (Client.runtime_expansions
841
+ ("dbus_object_path",))
842
843
__metaclass__ = transitional_clientdbus
844
1770
+ ("dbus_object_path", ))
1771
1772
_interface = "se.recompile.Mandos.Client"
1773
845
1774
# dbus.service.Object doesn't use super(), so we can't either.
846
847
def __init__(self, bus = None, *args, **kwargs):
848
self._approvals_pending = 0
1775
1776
def __init__(self, bus=None, *args, **kwargs):
849
1777
self.bus = bus
850
1778
Client.__init__(self, *args, **kwargs)
851
1779
# Only now, when this client is initialized, can it show up on
852
1780
# the D-Bus
853
client_object_name = unicode(self.name).translate(
1781
client_object_name = str(self.name).translate(
854
1782
{ord("."): ord("_"),
855
1783
ord("-"): ord("_")})
856
self.dbus_object_path = (dbus.ObjectPath
857
("/clients/" + client_object_name))
1784
self.dbus_object_path = dbus.ObjectPath(
1785
"/clients/" + client_object_name)
858
1786
DBusObjectWithProperties.__init__(self, self.bus,
859
1787
self.dbus_object_path)
860
861
def notifychangeproperty(transform_func,
862
dbus_name, type_func=lambda x: x,
863
variant_level=1):
864
""" Modify a variable so that its a property that announce its
865
changes to DBus.
866
transform_fun: Function that takes a value and transform it to
867
DBus type.
868
dbus_name: DBus name of the variable
1788
1789
def notifychangeproperty(transform_func, dbus_name,
1790
type_func=lambda x: x,
1791
variant_level=1,
1792
invalidate_only=False,
1793
_interface=_interface):
1794
""" Modify a variable so that it's a property which announces
1795
its changes to DBus.
1796
1797
transform_fun: Function that takes a value and a variant_level
1798
and transforms it to a D-Bus type.
1799
dbus_name: D-Bus name of the variable
869
1800
type_func: Function that transform the value before sending it
870
to DBus
871
variant_level: DBus variant level. default: 1
1801
to the D-Bus. Default: no transform
1802
variant_level: D-Bus variant level. Default: 1
872
1803
"""
873
real_value = [None,]
1804
attrname = "_{}".format(dbus_name)
1805
874
1806
def setter(self, value):
875
old_value = real_value[0]
876
real_value[0] = value
877
1807
if hasattr(self, "dbus_object_path"):
878
if type_func(old_value) != type_func(real_value[0]):
879
dbus_value = transform_func(type_func(real_value[0]),
880
variant_level)
881
self.PropertyChanged(dbus.String(dbus_name),
882
dbus_value)
883
884
return property(lambda self: real_value[0], setter)
885
886
1808
if (not hasattr(self, attrname) or
1809
type_func(getattr(self, attrname, None))
1810
!= type_func(value)):
1811
if invalidate_only:
1812
self.PropertiesChanged(
1813
_interface, dbus.Dictionary(),
1814
dbus.Array((dbus_name, )))
1815
else:
1816
dbus_value = transform_func(
1817
type_func(value),
1818
variant_level=variant_level)
1819
self.PropertyChanged(dbus.String(dbus_name),
1820
dbus_value)
1821
self.PropertiesChanged(
1822
_interface,
1823
dbus.Dictionary({dbus.String(dbus_name):
1824
dbus_value}),
1825
dbus.Array())
1826
setattr(self, attrname, value)
1827
1828
return property(lambda self: getattr(self, attrname), setter)
1829
887
1830
expires = notifychangeproperty(datetime_to_dbus, "Expires")
888
1831
approvals_pending = notifychangeproperty(dbus.Boolean,
889
1832
"ApprovalPending",
890
type_func = bool)
1833
type_func=bool)
891
1834
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
892
1835
last_enabled = notifychangeproperty(datetime_to_dbus,
893
1836
"LastEnabled")
894
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
895
type_func = lambda checker: checker is not None)
1837
checker = notifychangeproperty(
1838
dbus.Boolean, "CheckerRunning",
1839
type_func=lambda checker: checker is not None)
896
1840
last_checked_ok = notifychangeproperty(datetime_to_dbus,
897
1841
"LastCheckedOK")
898
last_approval_request = notifychangeproperty(datetime_to_dbus,
899
"LastApprovalRequest")
1842
last_checker_status = notifychangeproperty(dbus.Int16,
1843
"LastCheckerStatus")
1844
last_approval_request = notifychangeproperty(
1845
datetime_to_dbus, "LastApprovalRequest")
900
1846
approved_by_default = notifychangeproperty(dbus.Boolean,
901
1847
"ApprovedByDefault")
902
approval_delay = notifychangeproperty(dbus.UInt16, "ApprovalDelay",
903
type_func = _timedelta_to_milliseconds)
904
approval_duration = notifychangeproperty(dbus.UInt16, "ApprovalDuration",
905
type_func = _timedelta_to_milliseconds)
1848
approval_delay = notifychangeproperty(
1849
dbus.UInt64, "ApprovalDelay",
1850
type_func=lambda td: td.total_seconds() * 1000)
1851
approval_duration = notifychangeproperty(
1852
dbus.UInt64, "ApprovalDuration",
1853
type_func=lambda td: td.total_seconds() * 1000)
906
1854
host = notifychangeproperty(dbus.String, "Host")
907
timeout = notifychangeproperty(dbus.UInt16, "Timeout",
908
type_func = _timedelta_to_milliseconds)
909
extended_timeout = notifychangeproperty(dbus.UInt16, "ExtendedTimeout",
910
type_func = _timedelta_to_milliseconds)
911
interval = notifychangeproperty(dbus.UInt16, "Interval",
912
type_func = _timedelta_to_milliseconds)
1855
timeout = notifychangeproperty(
1856
dbus.UInt64, "Timeout",
1857
type_func=lambda td: td.total_seconds() * 1000)
1858
extended_timeout = notifychangeproperty(
1859
dbus.UInt64, "ExtendedTimeout",
1860
type_func=lambda td: td.total_seconds() * 1000)
1861
interval = notifychangeproperty(
1862
dbus.UInt64, "Interval",
1863
type_func=lambda td: td.total_seconds() * 1000)
913
1864
checker_command = notifychangeproperty(dbus.String, "Checker")
914
1865
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1866
invalidate_only=True)
1867
915
1868
del notifychangeproperty
916
1869
917
1870
def __del__(self, *args, **kwargs):
918
1871
try:
919
1872
self.remove_from_connection()
922
1875
if hasattr(DBusObjectWithProperties, "__del__"):
923
1876
DBusObjectWithProperties.__del__(self, *args, **kwargs)
924
1877
Client.__del__(self, *args, **kwargs)
925
926
def checker_callback(self, pid, condition, command,
927
*args, **kwargs):
928
self.checker_callback_tag = None
929
self.checker = None
930
if os.WIFEXITED(condition):
931
exitstatus = os.WEXITSTATUS(condition)
1878
1879
def checker_callback(self, source, condition,
1880
connection, command, *args, **kwargs):
1881
ret = Client.checker_callback(self, source, condition,
1882
connection, command, *args,
1883
**kwargs)
1884
exitstatus = self.last_checker_status
1885
if exitstatus >= 0:
932
1886
# Emit D-Bus signal
933
1887
self.CheckerCompleted(dbus.Int16(exitstatus),
934
dbus.Int64(condition),
1888
# This is specific to GNU libC
1889
dbus.Int64(exitstatus << 8),
935
1890
dbus.String(command))
936
1891
else:
937
1892
# Emit D-Bus signal
938
1893
self.CheckerCompleted(dbus.Int16(-1),
939
dbus.Int64(condition),
1894
dbus.Int64(
1895
# This is specific to GNU libC
1896
(exitstatus << 8)
1897
| self.last_checker_signal),
940
1898
dbus.String(command))
941
942
return Client.checker_callback(self, pid, condition, command,
943
*args, **kwargs)
944
1899
return ret
1900
945
1901
def start_checker(self, *args, **kwargs):
946
old_checker = self.checker
947
if self.checker is not None:
948
old_checker_pid = self.checker.pid
949
else:
950
old_checker_pid = None
1902
old_checker_pid = getattr(self.checker, "pid", None)
951
1903
r = Client.start_checker(self, *args, **kwargs)
952
1904
# Only if new checker process was started
953
1905
if (self.checker is not None
955
1907
# Emit D-Bus signal
956
1908
self.CheckerStarted(self.current_checker_command)
957
1909
return r
958
1910
959
1911
def _reset_approved(self):
960
self._approved = None
1912
self.approved = None
961
1913
return False
962
1914
963
1915
def approve(self, value=True):
1916
self.approved = value
1917
GLib.timeout_add(int(self.approval_duration.total_seconds()
1918
* 1000), self._reset_approved)
964
1919
self.send_changedstate()
965
self._approved = value
966
gobject.timeout_add(_timedelta_to_milliseconds
967
(self.approval_duration),
968
self._reset_approved)
969
970
971
## D-Bus methods, signals & properties
972
_interface = "se.bsnet.fukt.Mandos.Client"
973
974
## Signals
975
1920
1921
# D-Bus methods, signals & properties
1922
1923
# Interfaces
1924
1925
# Signals
1926
976
1927
# CheckerCompleted - signal
977
1928
@dbus.service.signal(_interface, signature="nxs")
978
1929
def CheckerCompleted(self, exitcode, waitstatus, command):
979
1930
"D-Bus signal"
980
1931
pass
981
1932
982
1933
# CheckerStarted - signal
983
1934
@dbus.service.signal(_interface, signature="s")
984
1935
def CheckerStarted(self, command):
985
1936
"D-Bus signal"
986
1937
pass
987
1938
988
1939
# PropertyChanged - signal
1940
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
989
1941
@dbus.service.signal(_interface, signature="sv")
990
1942
def PropertyChanged(self, property, value):
991
1943
"D-Bus signal"
992
1944
pass
993
1945
994
1946
# GotSecret - signal
995
1947
@dbus.service.signal(_interface)
996
1948
def GotSecret(self):
999
1951
server to mandos-client
1000
1952
"""
1001
1953
pass
1002
1954
1003
1955
# Rejected - signal
1004
1956
@dbus.service.signal(_interface, signature="s")
1005
1957
def Rejected(self, reason):
1006
1958
"D-Bus signal"
1007
1959
pass
1008
1960
1009
1961
# NeedApproval - signal
1010
1962
@dbus.service.signal(_interface, signature="tb")
1011
1963
def NeedApproval(self, timeout, default):
1012
1964
"D-Bus signal"
1013
1965
return self.need_approval()
1014
1015
## Methods
1016
1966
1967
# Methods
1968
1017
1969
# Approve - method
1018
1970
@dbus.service.method(_interface, in_signature="b")
1019
1971
def Approve(self, value):
1020
1972
self.approve(value)
1021
1973
1022
1974
# CheckedOK - method
1023
1975
@dbus.service.method(_interface)
1024
1976
def CheckedOK(self):
1025
1977
self.checked_ok()
1026
1978
1027
1979
# Enable - method
1980
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1028
1981
@dbus.service.method(_interface)
1029
1982
def Enable(self):
1030
1983
"D-Bus method"
1031
1984
self.enable()
1032
1985
1033
1986
# StartChecker - method
1987
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1034
1988
@dbus.service.method(_interface)
1035
1989
def StartChecker(self):
1036
1990
"D-Bus method"
1037
1991
self.start_checker()
1038
1992
1039
1993
# Disable - method
1994
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1040
1995
@dbus.service.method(_interface)
1041
1996
def Disable(self):
1042
1997
"D-Bus method"
1043
1998
self.disable()
1044
1999
1045
2000
# StopChecker - method
2001
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1046
2002
@dbus.service.method(_interface)
1047
2003
def StopChecker(self):
1048
2004
self.stop_checker()
1049
1050
## Properties
1051
2005
2006
# Properties
2007
1052
2008
# ApprovalPending - property
1053
2009
@dbus_service_property(_interface, signature="b", access="read")
1054
2010
def ApprovalPending_dbus_property(self):
1055
2011
return dbus.Boolean(bool(self.approvals_pending))
1056
2012
1057
2013
# ApprovedByDefault - property
1058
@dbus_service_property(_interface, signature="b",
2014
@dbus_service_property(_interface,
2015
signature="b",
1059
2016
access="readwrite")
1060
2017
def ApprovedByDefault_dbus_property(self, value=None):
1061
2018
if value is None: # get
1062
2019
return dbus.Boolean(self.approved_by_default)
1063
2020
self.approved_by_default = bool(value)
1064
2021
1065
2022
# ApprovalDelay - property
1066
@dbus_service_property(_interface, signature="t",
2023
@dbus_service_property(_interface,
2024
signature="t",
1067
2025
access="readwrite")
1068
2026
def ApprovalDelay_dbus_property(self, value=None):
1069
2027
if value is None: # get
1070
return dbus.UInt64(self.approval_delay_milliseconds())
2028
return dbus.UInt64(self.approval_delay.total_seconds()
2029
* 1000)
1071
2030
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1072
2031
1073
2032
# ApprovalDuration - property
1074
@dbus_service_property(_interface, signature="t",
2033
@dbus_service_property(_interface,
2034
signature="t",
1075
2035
access="readwrite")
1076
2036
def ApprovalDuration_dbus_property(self, value=None):
1077
2037
if value is None: # get
1078
return dbus.UInt64(_timedelta_to_milliseconds(
1079
self.approval_duration))
2038
return dbus.UInt64(self.approval_duration.total_seconds()
2039
* 1000)
1080
2040
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1081
2041
1082
2042
# Name - property
2043
@dbus_annotations(
2044
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1083
2045
@dbus_service_property(_interface, signature="s", access="read")
1084
2046
def Name_dbus_property(self):
1085
2047
return dbus.String(self.name)
1086
2048
2049
# KeyID - property
2050
@dbus_annotations(
2051
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2052
@dbus_service_property(_interface, signature="s", access="read")
2053
def KeyID_dbus_property(self):
2054
return dbus.String(self.key_id)
2055
1087
2056
# Fingerprint - property
2057
@dbus_annotations(
2058
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1088
2059
@dbus_service_property(_interface, signature="s", access="read")
1089
2060
def Fingerprint_dbus_property(self):
1090
2061
return dbus.String(self.fingerprint)
1091
2062
1092
2063
# Host - property
1093
@dbus_service_property(_interface, signature="s",
2064
@dbus_service_property(_interface,
2065
signature="s",
1094
2066
access="readwrite")
1095
2067
def Host_dbus_property(self, value=None):
1096
2068
if value is None: # get
1097
2069
return dbus.String(self.host)
1098
self.host = value
1099
2070
self.host = str(value)
2071
1100
2072
# Created - property
2073
@dbus_annotations(
2074
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1101
2075
@dbus_service_property(_interface, signature="s", access="read")
1102
2076
def Created_dbus_property(self):
1103
return dbus.String(datetime_to_dbus(self.created))
1104
2077
return datetime_to_dbus(self.created)
2078
1105
2079
# LastEnabled - property
1106
2080
@dbus_service_property(_interface, signature="s", access="read")
1107
2081
def LastEnabled_dbus_property(self):
1108
2082
return datetime_to_dbus(self.last_enabled)
1109
2083
1110
2084
# Enabled - property
1111
@dbus_service_property(_interface, signature="b",
2085
@dbus_service_property(_interface,
2086
signature="b",
1112
2087
access="readwrite")
1113
2088
def Enabled_dbus_property(self, value=None):
1114
2089
if value is None: # get
1117
2092
self.enable()
1118
2093
else:
1119
2094
self.disable()
1120
2095
1121
2096
# LastCheckedOK - property
1122
@dbus_service_property(_interface, signature="s",
2097
@dbus_service_property(_interface,
2098
signature="s",
1123
2099
access="readwrite")
1124
2100
def LastCheckedOK_dbus_property(self, value=None):
1125
2101
if value is not None:
1126
2102
self.checked_ok()
1127
2103
return
1128
2104
return datetime_to_dbus(self.last_checked_ok)
1129
2105
2106
# LastCheckerStatus - property
2107
@dbus_service_property(_interface, signature="n", access="read")
2108
def LastCheckerStatus_dbus_property(self):
2109
return dbus.Int16(self.last_checker_status)
2110
1130
2111
# Expires - property
1131
2112
@dbus_service_property(_interface, signature="s", access="read")
1132
2113
def Expires_dbus_property(self):
1133
2114
return datetime_to_dbus(self.expires)
1134
2115
1135
2116
# LastApprovalRequest - property
1136
2117
@dbus_service_property(_interface, signature="s", access="read")
1137
2118
def LastApprovalRequest_dbus_property(self):
1138
2119
return datetime_to_dbus(self.last_approval_request)
1139
2120
1140
2121
# Timeout - property
1141
@dbus_service_property(_interface, signature="t",
2122
@dbus_service_property(_interface,
2123
signature="t",
1142
2124
access="readwrite")
1143
2125
def Timeout_dbus_property(self, value=None):
1144
2126
if value is None: # get
1145
return dbus.UInt64(self.timeout_milliseconds())
2127
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2128
old_timeout = self.timeout
1146
2129
self.timeout = datetime.timedelta(0, 0, 0, value)
1147
if getattr(self, "disable_initiator_tag", None) is None:
1148
return
1149
# Reschedule timeout
1150
gobject.source_remove(self.disable_initiator_tag)
1151
self.disable_initiator_tag = None
1152
self.expires = None
1153
time_to_die = (self.
1154
_timedelta_to_milliseconds((self
1155
.last_checked_ok
1156
+ self.timeout)
1157
- datetime.datetime
1158
.utcnow()))
1159
if time_to_die <= 0:
1160
# The timeout has passed
1161
self.disable()
1162
else:
1163
self.expires = (datetime.datetime.utcnow()
1164
+ datetime.timedelta(milliseconds = time_to_die))
1165
self.disable_initiator_tag = (gobject.timeout_add
1166
(time_to_die, self.disable))
1167
2130
# Reschedule disabling
2131
if self.enabled:
2132
now = datetime.datetime.utcnow()
2133
self.expires += self.timeout - old_timeout
2134
if self.expires <= now:
2135
# The timeout has passed
2136
self.disable()
2137
else:
2138
if (getattr(self, "disable_initiator_tag", None)
2139
is None):
2140
return
2141
GLib.source_remove(self.disable_initiator_tag)
2142
self.disable_initiator_tag = GLib.timeout_add(
2143
int((self.expires - now).total_seconds() * 1000),
2144
self.disable)
2145
1168
2146
# ExtendedTimeout - property
1169
@dbus_service_property(_interface, signature="t",
2147
@dbus_service_property(_interface,
2148
signature="t",
1170
2149
access="readwrite")
1171
2150
def ExtendedTimeout_dbus_property(self, value=None):
1172
2151
if value is None: # get
1173
return dbus.UInt64(self.extended_timeout_milliseconds())
2152
return dbus.UInt64(self.extended_timeout.total_seconds()
2153
* 1000)
1174
2154
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1175
2155
1176
2156
# Interval - property
1177
@dbus_service_property(_interface, signature="t",
2157
@dbus_service_property(_interface,
2158
signature="t",
1178
2159
access="readwrite")
1179
2160
def Interval_dbus_property(self, value=None):
1180
2161
if value is None: # get
1181
return dbus.UInt64(self.interval_milliseconds())
2162
return dbus.UInt64(self.interval.total_seconds() * 1000)
1182
2163
self.interval = datetime.timedelta(0, 0, 0, value)
1183
2164
if getattr(self, "checker_initiator_tag", None) is None:
1184
2165
return
1185
# Reschedule checker run
1186
gobject.source_remove(self.checker_initiator_tag)
1187
self.checker_initiator_tag = (gobject.timeout_add
1188
(value, self.start_checker))
1189
self.start_checker() # Start one now, too
1190
2166
if self.enabled:
2167
# Reschedule checker run
2168
GLib.source_remove(self.checker_initiator_tag)
2169
self.checker_initiator_tag = GLib.timeout_add(
2170
value, self.start_checker)
2171
self.start_checker() # Start one now, too
2172
1191
2173
# Checker - property
1192
@dbus_service_property(_interface, signature="s",
2174
@dbus_service_property(_interface,
2175
signature="s",
1193
2176
access="readwrite")
1194
2177
def Checker_dbus_property(self, value=None):
1195
2178
if value is None: # get
1196
2179
return dbus.String(self.checker_command)
1197
self.checker_command = value
1198
2180
self.checker_command = str(value)
2181
1199
2182
# CheckerRunning - property
1200
@dbus_service_property(_interface, signature="b",
2183
@dbus_service_property(_interface,
2184
signature="b",
1201
2185
access="readwrite")
1202
2186
def CheckerRunning_dbus_property(self, value=None):
1203
2187
if value is None: # get
1206
2190
self.start_checker()
1207
2191
else:
1208
2192
self.stop_checker()
1209
2193
1210
2194
# ObjectPath - property
2195
@dbus_annotations(
2196
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2197
"org.freedesktop.DBus.Deprecated": "true"})
1211
2198
@dbus_service_property(_interface, signature="o", access="read")
1212
2199
def ObjectPath_dbus_property(self):
1213
return self.dbus_object_path # is already a dbus.ObjectPath
1214
2200
return self.dbus_object_path # is already a dbus.ObjectPath
2201
1215
2202
# Secret = property
1216
@dbus_service_property(_interface, signature="ay",
1217
access="write", byte_arrays=True)
2203
@dbus_annotations(
2204
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2205
"invalidates"})
2206
@dbus_service_property(_interface,
2207
signature="ay",
2208
access="write",
2209
byte_arrays=True)
1218
2210
def Secret_dbus_property(self, value):
1219
self.secret = str(value)
1220
2211
self.secret = bytes(value)
2212
1221
2213
del _interface
1222
2214
1223
2215
1224
2216
class ProxyClient(object):
1225
def __init__(self, child_pipe, fpr, address):
2217
def __init__(self, child_pipe, key_id, fpr, address):
1226
2218
self._pipe = child_pipe
1227
self._pipe.send(('init', fpr, address))
2219
self._pipe.send(('init', key_id, fpr, address))
1228
2220
if not self._pipe.recv():
1229
raise KeyError()
1230
2221
raise KeyError(key_id or fpr)
2222
1231
2223
def __getattribute__(self, name):
1232
if(name == '_pipe'):
2224
if name == '_pipe':
1233
2225
return super(ProxyClient, self).__getattribute__(name)
1234
2226
self._pipe.send(('getattr', name))
1235
2227
data = self._pipe.recv()
1236
2228
if data[0] == 'data':
1237
2229
return data[1]
1238
2230
if data[0] == 'function':
2231
1239
2232
def func(*args, **kwargs):
1240
2233
self._pipe.send(('funcall', name, args, kwargs))
1241
2234
return self._pipe.recv()[1]
2235
1242
2236
return func
1243
2237
1244
2238
def __setattr__(self, name, value):
1245
if(name == '_pipe'):
2239
if name == '_pipe':
1246
2240
return super(ProxyClient, self).__setattr__(name, value)
1247
2241
self._pipe.send(('setattr', name, value))
1248
2242
1249
2243
1250
2244
class ClientHandler(socketserver.BaseRequestHandler, object):
1251
2245
"""A class to handle client connections.
1252
2246
1253
2247
Instantiated once for each connection to handle it.
1254
2248
Note: This will run in its own forked process."""
1255
2249
1256
2250
def handle(self):
1257
2251
with contextlib.closing(self.server.child_pipe) as child_pipe:
1258
2252
logger.info("TCP connection from: %s",
1259
unicode(self.client_address))
2253
str(self.client_address))
1260
2254
logger.debug("Pipe FD: %d",
1261
2255
self.server.child_pipe.fileno())
1262
1263
session = (gnutls.connection
1264
.ClientSession(self.request,
1265
gnutls.connection
1266
.X509Credentials()))
1267
1268
# Note: gnutls.connection.X509Credentials is really a
1269
# generic GnuTLS certificate credentials object so long as
1270
# no X.509 keys are added to it. Therefore, we can use it
1271
# here despite using OpenPGP certificates.
1272
1273
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1274
# "+AES-256-CBC", "+SHA1",
1275
# "+COMP-NULL", "+CTYPE-OPENPGP",
1276
# "+DHE-DSS"))
2256
2257
session = gnutls.ClientSession(self.request)
2258
2259
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2260
# "+AES-256-CBC", "+SHA1",
2261
# "+COMP-NULL", "+CTYPE-OPENPGP",
2262
# "+DHE-DSS"))
1277
2263
# Use a fallback default, since this MUST be set.
1278
2264
priority = self.server.gnutls_priority
1279
2265
if priority is None:
1280
2266
priority = "NORMAL"
1281
(gnutls.library.functions
1282
.gnutls_priority_set_direct(session._c_object,
1283
priority, None))
1284
2267
gnutls.priority_set_direct(session._c_object,
2268
priority.encode("utf-8"),
2269
None)
2270
1285
2271
# Start communication using the Mandos protocol
1286
2272
# Get protocol number
1287
2273
line = self.request.makefile().readline()
1288
2274
logger.debug("Protocol version: %r", line)
1289
2275
try:
1290
2276
if int(line.strip().split()[0]) > 1:
1291
raise RuntimeError
2277
raise RuntimeError(line)
1292
2278
except (ValueError, IndexError, RuntimeError) as error:
1293
2279
logger.error("Unknown protocol version: %s", error)
1294
2280
return
1295
2281
1296
2282
# Start GnuTLS connection
1297
2283
try:
1298
2284
session.handshake()
1299
except gnutls.errors.GNUTLSError as error:
2285
except gnutls.Error as error:
1300
2286
logger.warning("Handshake failed: %s", error)
1301
2287
# Do not run session.bye() here: the session is not
1302
2288
# established. Just abandon the request.
1303
2289
return
1304
2290
logger.debug("Handshake succeeded")
1305
2291
1306
2292
approval_required = False
1307
2293
try:
1308
try:
1309
fpr = self.fingerprint(self.peer_certificate
1310
(session))
1311
except (TypeError,
1312
gnutls.errors.GNUTLSError) as error:
1313
logger.warning("Bad certificate: %s", error)
1314
return
1315
logger.debug("Fingerprint: %s", fpr)
1316
1317
try:
1318
client = ProxyClient(child_pipe, fpr,
2294
if gnutls.has_rawpk:
2295
fpr = b""
2296
try:
2297
key_id = self.key_id(
2298
self.peer_certificate(session))
2299
except (TypeError, gnutls.Error) as error:
2300
logger.warning("Bad certificate: %s", error)
2301
return
2302
logger.debug("Key ID: %s", key_id)
2303
2304
else:
2305
key_id = b""
2306
try:
2307
fpr = self.fingerprint(
2308
self.peer_certificate(session))
2309
except (TypeError, gnutls.Error) as error:
2310
logger.warning("Bad certificate: %s", error)
2311
return
2312
logger.debug("Fingerprint: %s", fpr)
2313
2314
try:
2315
client = ProxyClient(child_pipe, key_id, fpr,
1319
2316
self.client_address)
1320
2317
except KeyError:
1321
2318
return
1322
2319
1323
2320
if client.approval_delay:
1324
2321
delay = client.approval_delay
1325
2322
client.approvals_pending += 1
1326
2323
approval_required = True
1327
2324
1328
2325
while True:
1329
2326
if not client.enabled:
1330
2327
logger.info("Client %s is disabled",
1331
client.name)
2328
client.name)
1332
2329
if self.server.use_dbus:
1333
2330
# Emit D-Bus signal
1334
client.Rejected("Disabled")
2331
client.Rejected("Disabled")
1335
2332
return
1336
1337
if client._approved or not client.approval_delay:
1338
#We are approved or approval is disabled
2333
2334
if client.approved or not client.approval_delay:
2335
# We are approved or approval is disabled
1339
2336
break
1340
elif client._approved is None:
2337
elif client.approved is None:
1341
2338
logger.info("Client %s needs approval",
1342
2339
client.name)
1343
2340
if self.server.use_dbus:
1344
2341
# Emit D-Bus signal
1345
2342
client.NeedApproval(
1346
client.approval_delay_milliseconds(),
1347
client.approved_by_default)
2343
client.approval_delay.total_seconds()
2344
* 1000, client.approved_by_default)
1348
2345
else:
1349
2346
logger.warning("Client %s was not approved",
1350
2347
client.name)
1352
2349
# Emit D-Bus signal
1353
2350
client.Rejected("Denied")
1354
2351
return
1355
1356
#wait until timeout or approved
1357
#x = float(client._timedelta_to_milliseconds(delay))
2352
2353
# wait until timeout or approved
1358
2354
time = datetime.datetime.now()
1359
2355
client.changedstate.acquire()
1360
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
2356
client.changedstate.wait(delay.total_seconds())
1361
2357
client.changedstate.release()
1362
2358
time2 = datetime.datetime.now()
1363
2359
if (time2 - time) >= delay:
1373
2369
break
1374
2370
else:
1375
2371
delay -= time2 - time
1376
1377
sent_size = 0
1378
while sent_size < len(client.secret):
1379
try:
1380
sent = session.send(client.secret[sent_size:])
1381
except gnutls.errors.GNUTLSError as error:
1382
logger.warning("gnutls send failed")
1383
return
1384
logger.debug("Sent: %d, remaining: %d",
1385
sent, len(client.secret)
1386
- (sent_size + sent))
1387
sent_size += sent
1388
2372
2373
try:
2374
session.send(client.secret)
2375
except gnutls.Error as error:
2376
logger.warning("gnutls send failed",
2377
exc_info=error)
2378
return
2379
1389
2380
logger.info("Sending secret to %s", client.name)
1390
# bump the timeout as if seen
1391
client.checked_ok(client.extended_timeout)
2381
# bump the timeout using extended_timeout
2382
client.bump_timeout(client.extended_timeout)
1392
2383
if self.server.use_dbus:
1393
2384
# Emit D-Bus signal
1394
2385
client.GotSecret()
1395
2386
1396
2387
finally:
1397
2388
if approval_required:
1398
2389
client.approvals_pending -= 1
1399
2390
try:
1400
2391
session.bye()
1401
except gnutls.errors.GNUTLSError as error:
1402
logger.warning("GnuTLS bye failed")
1403
2392
except gnutls.Error as error:
2393
logger.warning("GnuTLS bye failed",
2394
exc_info=error)
2395
1404
2396
@staticmethod
1405
2397
def peer_certificate(session):
1406
"Return the peer's OpenPGP certificate as a bytestring"
1407
# If not an OpenPGP certificate...
1408
if (gnutls.library.functions
1409
.gnutls_certificate_type_get(session._c_object)
1410
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1411
# ...do the normal thing
1412
return session.peer_certificate
2398
"Return the peer's certificate as a bytestring"
2399
try:
2400
cert_type = gnutls.certificate_type_get2(session._c_object,
2401
gnutls.CTYPE_PEERS)
2402
except AttributeError:
2403
cert_type = gnutls.certificate_type_get(session._c_object)
2404
if gnutls.has_rawpk:
2405
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2406
else:
2407
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2408
# If not a valid certificate type...
2409
if cert_type not in valid_cert_types:
2410
logger.info("Cert type %r not in %r", cert_type,
2411
valid_cert_types)
2412
# ...return invalid data
2413
return b""
1413
2414
list_size = ctypes.c_uint(1)
1414
cert_list = (gnutls.library.functions
1415
.gnutls_certificate_get_peers
2415
cert_list = (gnutls.certificate_get_peers
1416
2416
(session._c_object, ctypes.byref(list_size)))
1417
2417
if not bool(cert_list) and list_size.value != 0:
1418
raise gnutls.errors.GNUTLSError("error getting peer"
1419
" certificate")
2418
raise gnutls.Error("error getting peer certificate")
1420
2419
if list_size.value == 0:
1421
2420
return None
1422
2421
cert = cert_list[0]
1423
2422
return ctypes.string_at(cert.data, cert.size)
1424
2423
2424
@staticmethod
2425
def key_id(certificate):
2426
"Convert a certificate bytestring to a hexdigit key ID"
2427
# New GnuTLS "datum" with the public key
2428
datum = gnutls.datum_t(
2429
ctypes.cast(ctypes.c_char_p(certificate),
2430
ctypes.POINTER(ctypes.c_ubyte)),
2431
ctypes.c_uint(len(certificate)))
2432
# XXX all these need to be created in the gnutls "module"
2433
# New empty GnuTLS certificate
2434
pubkey = gnutls.pubkey_t()
2435
gnutls.pubkey_init(ctypes.byref(pubkey))
2436
# Import the raw public key into the certificate
2437
gnutls.pubkey_import(pubkey,
2438
ctypes.byref(datum),
2439
gnutls.X509_FMT_DER)
2440
# New buffer for the key ID
2441
buf = ctypes.create_string_buffer(32)
2442
buf_len = ctypes.c_size_t(len(buf))
2443
# Get the key ID from the raw public key into the buffer
2444
gnutls.pubkey_get_key_id(pubkey,
2445
gnutls.KEYID_USE_SHA256,
2446
ctypes.cast(ctypes.byref(buf),
2447
ctypes.POINTER(ctypes.c_ubyte)),
2448
ctypes.byref(buf_len))
2449
# Deinit the certificate
2450
gnutls.pubkey_deinit(pubkey)
2451
2452
# Convert the buffer to a Python bytestring
2453
key_id = ctypes.string_at(buf, buf_len.value)
2454
# Convert the bytestring to hexadecimal notation
2455
hex_key_id = binascii.hexlify(key_id).upper()
2456
return hex_key_id
2457
1425
2458
@staticmethod
1426
2459
def fingerprint(openpgp):
1427
2460
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1428
2461
# New GnuTLS "datum" with the OpenPGP public key
1429
datum = (gnutls.library.types
1430
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1431
ctypes.POINTER
1432
(ctypes.c_ubyte)),
1433
ctypes.c_uint(len(openpgp))))
2462
datum = gnutls.datum_t(
2463
ctypes.cast(ctypes.c_char_p(openpgp),
2464
ctypes.POINTER(ctypes.c_ubyte)),
2465
ctypes.c_uint(len(openpgp)))
1434
2466
# New empty GnuTLS certificate
1435
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1436
(gnutls.library.functions
1437
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2467
crt = gnutls.openpgp_crt_t()
2468
gnutls.openpgp_crt_init(ctypes.byref(crt))
1438
2469
# Import the OpenPGP public key into the certificate
1439
(gnutls.library.functions
1440
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1441
gnutls.library.constants
1442
.GNUTLS_OPENPGP_FMT_RAW))
2470
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2471
gnutls.OPENPGP_FMT_RAW)
1443
2472
# Verify the self signature in the key
1444
2473
crtverify = ctypes.c_uint()
1445
(gnutls.library.functions
1446
.gnutls_openpgp_crt_verify_self(crt, 0,
1447
ctypes.byref(crtverify)))
2474
gnutls.openpgp_crt_verify_self(crt, 0,
2475
ctypes.byref(crtverify))
1448
2476
if crtverify.value != 0:
1449
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1450
raise (gnutls.errors.CertificateSecurityError
1451
("Verify failed"))
2477
gnutls.openpgp_crt_deinit(crt)
2478
raise gnutls.CertificateSecurityError(code
2479
=crtverify.value)
1452
2480
# New buffer for the fingerprint
1453
2481
buf = ctypes.create_string_buffer(20)
1454
2482
buf_len = ctypes.c_size_t()
1455
2483
# Get the fingerprint from the certificate into the buffer
1456
(gnutls.library.functions
1457
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1458
ctypes.byref(buf_len)))
2484
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2485
ctypes.byref(buf_len))
1459
2486
# Deinit the certificate
1460
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2487
gnutls.openpgp_crt_deinit(crt)
1461
2488
# Convert the buffer to a Python bytestring
1462
2489
fpr = ctypes.string_at(buf, buf_len.value)
1463
2490
# Convert the bytestring to hexadecimal notation
1464
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
2491
hex_fpr = binascii.hexlify(fpr).upper()
1465
2492
return hex_fpr
1466
2493
1467
2494
1468
2495
class MultiprocessingMixIn(object):
1469
2496
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2497
1470
2498
def sub_process_main(self, request, address):
1471
2499
try:
1472
2500
self.finish_request(request, address)
1473
except:
2501
except Exception:
1474
2502
self.handle_error(request, address)
1475
2503
self.close_request(request)
1476
2504
1477
2505
def process_request(self, request, address):
1478
2506
"""Start a new process to process the request."""
1479
multiprocessing.Process(target = self.sub_process_main,
1480
args = (request, address)).start()
2507
proc = multiprocessing.Process(target=self.sub_process_main,
2508
args=(request, address))
2509
proc.start()
2510
return proc
1481
2511
1482
2512
1483
2513
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1484
2514
""" adds a pipe to the MixIn """
2515
1485
2516
def process_request(self, request, client_address):
1486
2517
"""Overrides and wraps the original process_request().
1487
2518
1488
2519
This function creates a new pipe in self.pipe
1489
2520
"""
1490
2521
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1491
1492
super(MultiprocessingMixInWithPipe,
1493
self).process_request(request, client_address)
2522
2523
proc = MultiprocessingMixIn.process_request(self, request,
2524
client_address)
1494
2525
self.child_pipe.close()
1495
self.add_pipe(parent_pipe)
1496
1497
def add_pipe(self, parent_pipe):
2526
self.add_pipe(parent_pipe, proc)
2527
2528
def add_pipe(self, parent_pipe, proc):
1498
2529
"""Dummy function; override as necessary"""
1499
raise NotImplementedError
2530
raise NotImplementedError()
1500
2531
1501
2532
1502
2533
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1503
2534
socketserver.TCPServer, object):
1504
2535
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1505
2536
1506
2537
Attributes:
1507
2538
enabled: Boolean; whether this server is activated yet
1508
2539
interface: None or a network interface name (string)
1509
2540
use_ipv6: Boolean; to use IPv6 or not
1510
2541
"""
2542
1511
2543
def __init__(self, server_address, RequestHandlerClass,
1512
interface=None, use_ipv6=True):
2544
interface=None,
2545
use_ipv6=True,
2546
socketfd=None):
2547
"""If socketfd is set, use that file descriptor instead of
2548
creating a new one with socket.socket().
2549
"""
1513
2550
self.interface = interface
1514
2551
if use_ipv6:
1515
2552
self.address_family = socket.AF_INET6
2553
if socketfd is not None:
2554
# Save the file descriptor
2555
self.socketfd = socketfd
2556
# Save the original socket.socket() function
2557
self.socket_socket = socket.socket
2558
2559
# To implement --socket, we monkey patch socket.socket.
2560
#
2561
# (When socketserver.TCPServer is a new-style class, we
2562
# could make self.socket into a property instead of monkey
2563
# patching socket.socket.)
2564
#
2565
# Create a one-time-only replacement for socket.socket()
2566
@functools.wraps(socket.socket)
2567
def socket_wrapper(*args, **kwargs):
2568
# Restore original function so subsequent calls are
2569
# not affected.
2570
socket.socket = self.socket_socket
2571
del self.socket_socket
2572
# This time only, return a new socket object from the
2573
# saved file descriptor.
2574
return socket.fromfd(self.socketfd, *args, **kwargs)
2575
# Replace socket.socket() function with wrapper
2576
socket.socket = socket_wrapper
2577
# The socketserver.TCPServer.__init__ will call
2578
# socket.socket(), which might be our replacement,
2579
# socket_wrapper(), if socketfd was set.
1516
2580
socketserver.TCPServer.__init__(self, server_address,
1517
2581
RequestHandlerClass)
2582
1518
2583
def server_bind(self):
1519
2584
"""This overrides the normal server_bind() function
1520
2585
to bind to an interface if one was specified, and also NOT to
1521
2586
bind to an address or port if they were not specified."""
2587
global SO_BINDTODEVICE
1522
2588
if self.interface is not None:
1523
2589
if SO_BINDTODEVICE is None:
1524
logger.error("SO_BINDTODEVICE does not exist;"
1525
" cannot bind to interface %s",
1526
self.interface)
1527
else:
1528
try:
1529
self.socket.setsockopt(socket.SOL_SOCKET,
1530
SO_BINDTODEVICE,
1531
str(self.interface
1532
+ '\0'))
1533
except socket.error as error:
1534
if error[0] == errno.EPERM:
1535
logger.error("No permission to"
1536
" bind to interface %s",
1537
self.interface)
1538
elif error[0] == errno.ENOPROTOOPT:
1539
logger.error("SO_BINDTODEVICE not available;"
1540
" cannot bind to interface %s",
1541
self.interface)
1542
else:
1543
raise
2590
# Fall back to a hard-coded value which seems to be
2591
# common enough.
2592
logger.warning("SO_BINDTODEVICE not found, trying 25")
2593
SO_BINDTODEVICE = 25
2594
try:
2595
self.socket.setsockopt(
2596
socket.SOL_SOCKET, SO_BINDTODEVICE,
2597
(self.interface + "\0").encode("utf-8"))
2598
except socket.error as error:
2599
if error.errno == errno.EPERM:
2600
logger.error("No permission to bind to"
2601
" interface %s", self.interface)
2602
elif error.errno == errno.ENOPROTOOPT:
2603
logger.error("SO_BINDTODEVICE not available;"
2604
" cannot bind to interface %s",
2605
self.interface)
2606
elif error.errno == errno.ENODEV:
2607
logger.error("Interface %s does not exist,"
2608
" cannot bind", self.interface)
2609
else:
2610
raise
1544
2611
# Only bind(2) the socket if we really need to.
1545
2612
if self.server_address[0] or self.server_address[1]:
2613
if self.server_address[1]:
2614
self.allow_reuse_address = True
1546
2615
if not self.server_address[0]:
1547
2616
if self.address_family == socket.AF_INET6:
1548
any_address = "::" # in6addr_any
2617
any_address = "::" # in6addr_any
1549
2618
else:
1550
any_address = socket.INADDR_ANY
2619
any_address = "0.0.0.0" # INADDR_ANY
1551
2620
self.server_address = (any_address,
1552
2621
self.server_address[1])
1553
2622
elif not self.server_address[1]:
1554
self.server_address = (self.server_address[0],
1555
0)
2623
self.server_address = (self.server_address[0], 0)
1556
2624
# if self.interface:
1557
2625
# self.server_address = (self.server_address[0],
1558
2626
# 0, # port
1564
2632
1565
2633
class MandosServer(IPv6_TCPServer):
1566
2634
"""Mandos server.
1567
2635
1568
2636
Attributes:
1569
2637
clients: set of Client objects
1570
2638
gnutls_priority GnuTLS priority string
1571
2639
use_dbus: Boolean; to emit D-Bus signals or not
1572
1573
Assumes a gobject.MainLoop event loop.
2640
2641
Assumes a GLib.MainLoop event loop.
1574
2642
"""
2643
1575
2644
def __init__(self, server_address, RequestHandlerClass,
1576
interface=None, use_ipv6=True, clients=None,
1577
gnutls_priority=None, use_dbus=True):
2645
interface=None,
2646
use_ipv6=True,
2647
clients=None,
2648
gnutls_priority=None,
2649
use_dbus=True,
2650
socketfd=None):
1578
2651
self.enabled = False
1579
2652
self.clients = clients
1580
2653
if self.clients is None:
1581
self.clients = set()
2654
self.clients = {}
1582
2655
self.use_dbus = use_dbus
1583
2656
self.gnutls_priority = gnutls_priority
1584
2657
IPv6_TCPServer.__init__(self, server_address,
1585
2658
RequestHandlerClass,
1586
interface = interface,
1587
use_ipv6 = use_ipv6)
2659
interface=interface,
2660
use_ipv6=use_ipv6,
2661
socketfd=socketfd)
2662
1588
2663
def server_activate(self):
1589
2664
if self.enabled:
1590
2665
return socketserver.TCPServer.server_activate(self)
2666
1591
2667
def enable(self):
1592
2668
self.enabled = True
1593
def add_pipe(self, parent_pipe):
2669
2670
def add_pipe(self, parent_pipe, proc):
1594
2671
# Call "handle_ipc" for both data and EOF events
1595
gobject.io_add_watch(parent_pipe.fileno(),
1596
gobject.IO_IN | gobject.IO_HUP,
1597
functools.partial(self.handle_ipc,
1598
parent_pipe = parent_pipe))
1599
1600
def handle_ipc(self, source, condition, parent_pipe=None,
2672
GLib.io_add_watch(
2673
parent_pipe.fileno(),
2674
GLib.IO_IN | GLib.IO_HUP,
2675
functools.partial(self.handle_ipc,
2676
parent_pipe=parent_pipe,
2677
proc=proc))
2678
2679
def handle_ipc(self, source, condition,
2680
parent_pipe=None,
2681
proc=None,
1601
2682
client_object=None):
1602
condition_names = {
1603
gobject.IO_IN: "IN", # There is data to read.
1604
gobject.IO_OUT: "OUT", # Data can be written (without
1605
# blocking).
1606
gobject.IO_PRI: "PRI", # There is urgent data to read.
1607
gobject.IO_ERR: "ERR", # Error condition.
1608
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1609
# broken, usually for pipes and
1610
# sockets).
1611
}
1612
conditions_string = ' | '.join(name
1613
for cond, name in
1614
condition_names.iteritems()
1615
if cond & condition)
1616
# error or the other end of multiprocessing.Pipe has closed
1617
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2683
# error, or the other end of multiprocessing.Pipe has closed
2684
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2685
# Wait for other process to exit
2686
proc.join()
1618
2687
return False
1619
2688
1620
2689
# Read a request from the child
1621
2690
request = parent_pipe.recv()
1622
2691
command = request[0]
1623
2692
1624
2693
if command == 'init':
1625
fpr = request[1]
1626
address = request[2]
1627
1628
for c in self.clients:
1629
if c.fingerprint == fpr:
2694
key_id = request[1].decode("ascii")
2695
fpr = request[2].decode("ascii")
2696
address = request[3]
2697
2698
for c in self.clients.values():
2699
if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2700
continue
2701
if key_id and c.key_id == key_id:
2702
client = c
2703
break
2704
if fpr and c.fingerprint == fpr:
1630
2705
client = c
1631
2706
break
1632
2707
else:
1633
logger.info("Client not found for fingerprint: %s, ad"
1634
"dress: %s", fpr, address)
2708
logger.info("Client not found for key ID: %s, address"
2709
": %s", key_id or fpr, address)
1635
2710
if self.use_dbus:
1636
2711
# Emit D-Bus signal
1637
mandos_dbus_service.ClientNotFound(fpr, address[0])
2712
mandos_dbus_service.ClientNotFound(key_id or fpr,
2713
address[0])
1638
2714
parent_pipe.send(False)
1639
2715
return False
1640
1641
gobject.io_add_watch(parent_pipe.fileno(),
1642
gobject.IO_IN | gobject.IO_HUP,
1643
functools.partial(self.handle_ipc,
1644
parent_pipe = parent_pipe,
1645
client_object = client))
2716
2717
GLib.io_add_watch(
2718
parent_pipe.fileno(),
2719
GLib.IO_IN | GLib.IO_HUP,
2720
functools.partial(self.handle_ipc,
2721
parent_pipe=parent_pipe,
2722
proc=proc,
2723
client_object=client))
1646
2724
parent_pipe.send(True)
1647
# remove the old hook in favor of the new above hook on same fileno
2725
# remove the old hook in favor of the new above hook on
2726
# same fileno
1648
2727
return False
1649
2728
if command == 'funcall':
1650
2729
funcname = request[1]
1651
2730
args = request[2]
1652
2731
kwargs = request[3]
1653
1654
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
1655
2732
2733
parent_pipe.send(('data', getattr(client_object,
2734
funcname)(*args,
2735
**kwargs)))
2736
1656
2737
if command == 'getattr':
1657
2738
attrname = request[1]
1658
if callable(client_object.__getattribute__(attrname)):
1659
parent_pipe.send(('function',))
2739
if isinstance(client_object.__getattribute__(attrname),
2740
collections.Callable):
2741
parent_pipe.send(('function', ))
1660
2742
else:
1661
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
1662
2743
parent_pipe.send((
2744
'data', client_object.__getattribute__(attrname)))
2745
1663
2746
if command == 'setattr':
1664
2747
attrname = request[1]
1665
2748
value = request[2]
1666
2749
setattr(client_object, attrname, value)
1667
2750
1668
2751
return True
1669
2752
1670
2753
2754
def rfc3339_duration_to_delta(duration):
2755
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2756
2757
>>> rfc3339_duration_to_delta("P7D")
2758
datetime.timedelta(7)
2759
>>> rfc3339_duration_to_delta("PT60S")
2760
datetime.timedelta(0, 60)
2761
>>> rfc3339_duration_to_delta("PT60M")
2762
datetime.timedelta(0, 3600)
2763
>>> rfc3339_duration_to_delta("PT24H")
2764
datetime.timedelta(1)
2765
>>> rfc3339_duration_to_delta("P1W")
2766
datetime.timedelta(7)
2767
>>> rfc3339_duration_to_delta("PT5M30S")
2768
datetime.timedelta(0, 330)
2769
>>> rfc3339_duration_to_delta("P1DT3M20S")
2770
datetime.timedelta(1, 200)
2771
"""
2772
2773
# Parsing an RFC 3339 duration with regular expressions is not
2774
# possible - there would have to be multiple places for the same
2775
# values, like seconds. The current code, while more esoteric, is
2776
# cleaner without depending on a parsing library. If Python had a
2777
# built-in library for parsing we would use it, but we'd like to
2778
# avoid excessive use of external libraries.
2779
2780
# New type for defining tokens, syntax, and semantics all-in-one
2781
Token = collections.namedtuple("Token", (
2782
"regexp", # To match token; if "value" is not None, must have
2783
# a "group" containing digits
2784
"value", # datetime.timedelta or None
2785
"followers")) # Tokens valid after this token
2786
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2787
# the "duration" ABNF definition in RFC 3339, Appendix A.
2788
token_end = Token(re.compile(r"$"), None, frozenset())
2789
token_second = Token(re.compile(r"(\d+)S"),
2790
datetime.timedelta(seconds=1),
2791
frozenset((token_end, )))
2792
token_minute = Token(re.compile(r"(\d+)M"),
2793
datetime.timedelta(minutes=1),
2794
frozenset((token_second, token_end)))
2795
token_hour = Token(re.compile(r"(\d+)H"),
2796
datetime.timedelta(hours=1),
2797
frozenset((token_minute, token_end)))
2798
token_time = Token(re.compile(r"T"),
2799
None,
2800
frozenset((token_hour, token_minute,
2801
token_second)))
2802
token_day = Token(re.compile(r"(\d+)D"),
2803
datetime.timedelta(days=1),
2804
frozenset((token_time, token_end)))
2805
token_month = Token(re.compile(r"(\d+)M"),
2806
datetime.timedelta(weeks=4),
2807
frozenset((token_day, token_end)))
2808
token_year = Token(re.compile(r"(\d+)Y"),
2809
datetime.timedelta(weeks=52),
2810
frozenset((token_month, token_end)))
2811
token_week = Token(re.compile(r"(\d+)W"),
2812
datetime.timedelta(weeks=1),
2813
frozenset((token_end, )))
2814
token_duration = Token(re.compile(r"P"), None,
2815
frozenset((token_year, token_month,
2816
token_day, token_time,
2817
token_week)))
2818
# Define starting values:
2819
# Value so far
2820
value = datetime.timedelta()
2821
found_token = None
2822
# Following valid tokens
2823
followers = frozenset((token_duration, ))
2824
# String left to parse
2825
s = duration
2826
# Loop until end token is found
2827
while found_token is not token_end:
2828
# Search for any currently valid tokens
2829
for token in followers:
2830
match = token.regexp.match(s)
2831
if match is not None:
2832
# Token found
2833
if token.value is not None:
2834
# Value found, parse digits
2835
factor = int(match.group(1), 10)
2836
# Add to value so far
2837
value += factor * token.value
2838
# Strip token from string
2839
s = token.regexp.sub("", s, 1)
2840
# Go to found token
2841
found_token = token
2842
# Set valid next tokens
2843
followers = found_token.followers
2844
break
2845
else:
2846
# No currently valid tokens were found
2847
raise ValueError("Invalid RFC 3339 duration: {!r}"
2848
.format(duration))
2849
# End token found
2850
return value
2851
2852
1671
2853
def string_to_delta(interval):
1672
2854
"""Parse a string and return a datetime.timedelta
1673
2855
1674
2856
>>> string_to_delta('7d')
1675
2857
datetime.timedelta(7)
1676
2858
>>> string_to_delta('60s')
1684
2866
>>> string_to_delta('5m 30s')
1685
2867
datetime.timedelta(0, 330)
1686
2868
"""
2869
2870
try:
2871
return rfc3339_duration_to_delta(interval)
2872
except ValueError:
2873
pass
2874
1687
2875
timevalue = datetime.timedelta(0)
1688
2876
for s in interval.split():
1689
2877
try:
1690
suffix = unicode(s[-1])
2878
suffix = s[-1]
1691
2879
value = int(s[:-1])
1692
2880
if suffix == "d":
1693
2881
delta = datetime.timedelta(value)
1700
2888
elif suffix == "w":
1701
2889
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1702
2890
else:
1703
raise ValueError("Unknown suffix %r" % suffix)
1704
except (ValueError, IndexError) as e:
2891
raise ValueError("Unknown suffix {!r}".format(suffix))
2892
except IndexError as e:
1705
2893
raise ValueError(*(e.args))
1706
2894
timevalue += delta
1707
2895
return timevalue
1708
2896
1709
2897
1710
def if_nametoindex(interface):
1711
"""Call the C function if_nametoindex(), or equivalent
1712
1713
Note: This function cannot accept a unicode string."""
1714
global if_nametoindex
1715
try:
1716
if_nametoindex = (ctypes.cdll.LoadLibrary
1717
(ctypes.util.find_library("c"))
1718
.if_nametoindex)
1719
except (OSError, AttributeError):
1720
logger.warning("Doing if_nametoindex the hard way")
1721
def if_nametoindex(interface):
1722
"Get an interface index the hard way, i.e. using fcntl()"
1723
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1724
with contextlib.closing(socket.socket()) as s:
1725
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1726
struct.pack(str("16s16x"),
1727
interface))
1728
interface_index = struct.unpack(str("I"),
1729
ifreq[16:20])[0]
1730
return interface_index
1731
return if_nametoindex(interface)
1732
1733
1734
def daemon(nochdir = False, noclose = False):
2898
def daemon(nochdir=False, noclose=False):
1735
2899
"""See daemon(3). Standard BSD Unix function.
1736
2900
1737
2901
This should really exist as os.daemon, but it doesn't (yet)."""
1738
2902
if os.fork():
1739
2903
sys.exit()
1744
2908
sys.exit()
1745
2909
if not noclose:
1746
2910
# Close all standard open file descriptors
1747
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2911
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1748
2912
if not stat.S_ISCHR(os.fstat(null).st_mode):
1749
2913
raise OSError(errno.ENODEV,
1750
"%s not a character device"
1751
% os.path.devnull)
2914
"{} not a character device"
2915
.format(os.devnull))
1752
2916
os.dup2(null, sys.stdin.fileno())
1753
2917
os.dup2(null, sys.stdout.fileno())
1754
2918
os.dup2(null, sys.stderr.fileno())
1757
2921
1758
2922
1759
2923
def main():
1760
2924
1761
2925
##################################################################
1762
2926
# Parsing of options, both command line and config file
1763
2927
1764
2928
parser = argparse.ArgumentParser()
1765
2929
parser.add_argument("-v", "--version", action="version",
1766
version = "%%(prog)s %s" % version,
2930
version="%(prog)s {}".format(version),
1767
2931
help="show version number and exit")
1768
2932
parser.add_argument("-i", "--interface", metavar="IF",
1769
2933
help="Bind to interface IF")
1775
2939
help="Run self-test")
1776
2940
parser.add_argument("--debug", action="store_true",
1777
2941
help="Debug mode; run in foreground and log"
1778
" to terminal")
2942
" to terminal", default=None)
1779
2943
parser.add_argument("--debuglevel", metavar="LEVEL",
1780
2944
help="Debug level for stdout output")
1781
2945
parser.add_argument("--priority", help="GnuTLS"
1788
2952
" files")
1789
2953
parser.add_argument("--no-dbus", action="store_false",
1790
2954
dest="use_dbus", help="Do not provide D-Bus"
1791
" system bus interface")
2955
" system bus interface", default=None)
1792
2956
parser.add_argument("--no-ipv6", action="store_false",
1793
dest="use_ipv6", help="Do not use IPv6")
2957
dest="use_ipv6", help="Do not use IPv6",
2958
default=None)
2959
parser.add_argument("--no-restore", action="store_false",
2960
dest="restore", help="Do not restore stored"
2961
" state", default=None)
2962
parser.add_argument("--socket", type=int,
2963
help="Specify a file descriptor to a network"
2964
" socket to use instead of creating one")
2965
parser.add_argument("--statedir", metavar="DIR",
2966
help="Directory to save/restore state in")
2967
parser.add_argument("--foreground", action="store_true",
2968
help="Run in foreground", default=None)
2969
parser.add_argument("--no-zeroconf", action="store_false",
2970
dest="zeroconf", help="Do not use Zeroconf",
2971
default=None)
2972
1794
2973
options = parser.parse_args()
1795
2974
1796
2975
if options.check:
1797
2976
import doctest
1798
doctest.testmod()
1799
sys.exit()
1800
2977
fail_count, test_count = doctest.testmod()
2978
sys.exit(os.EX_OK if fail_count == 0 else 1)
2979
1801
2980
# Default values for config file for server-global settings
1802
server_defaults = { "interface": "",
1803
"address": "",
1804
"port": "",
1805
"debug": "False",
1806
"priority":
1807
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1808
"servicename": "Mandos",
1809
"use_dbus": "True",
1810
"use_ipv6": "True",
1811
"debuglevel": "",
1812
}
1813
2981
if gnutls.has_rawpk:
2982
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
2983
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
2984
else:
2985
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2986
":+SIGN-DSA-SHA256")
2987
server_defaults = {"interface": "",
2988
"address": "",
2989
"port": "",
2990
"debug": "False",
2991
"priority": priority,
2992
"servicename": "Mandos",
2993
"use_dbus": "True",
2994
"use_ipv6": "True",
2995
"debuglevel": "",
2996
"restore": "True",
2997
"socket": "",
2998
"statedir": "/var/lib/mandos",
2999
"foreground": "False",
3000
"zeroconf": "True",
3001
}
3002
del priority
3003
1814
3004
# Parse config file for server-global settings
1815
server_config = configparser.SafeConfigParser(server_defaults)
3005
server_config = configparser.ConfigParser(server_defaults)
1816
3006
del server_defaults
1817
server_config.read(os.path.join(options.configdir,
1818
"mandos.conf"))
1819
# Convert the SafeConfigParser object to a dict
3007
server_config.read(os.path.join(options.configdir, "mandos.conf"))
3008
# Convert the ConfigParser object to a dict
1820
3009
server_settings = server_config.defaults()
1821
3010
# Use the appropriate methods on the non-string config options
1822
for option in ("debug", "use_dbus", "use_ipv6"):
3011
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3012
"foreground", "zeroconf"):
1823
3013
server_settings[option] = server_config.getboolean("DEFAULT",
1824
3014
option)
1825
3015
if server_settings["port"]:
1826
3016
server_settings["port"] = server_config.getint("DEFAULT",
1827
3017
"port")
3018
if server_settings["socket"]:
3019
server_settings["socket"] = server_config.getint("DEFAULT",
3020
"socket")
3021
# Later, stdin will, and stdout and stderr might, be dup'ed
3022
# over with an opened os.devnull. But we don't want this to
3023
# happen with a supplied network socket.
3024
if 0 <= server_settings["socket"] <= 2:
3025
server_settings["socket"] = os.dup(server_settings
3026
["socket"])
1828
3027
del server_config
1829
3028
1830
3029
# Override the settings from the config file with command line
1831
3030
# options, if set.
1832
3031
for option in ("interface", "address", "port", "debug",
1833
"priority", "servicename", "configdir",
1834
"use_dbus", "use_ipv6", "debuglevel"):
3032
"priority", "servicename", "configdir", "use_dbus",
3033
"use_ipv6", "debuglevel", "restore", "statedir",
3034
"socket", "foreground", "zeroconf"):
1835
3035
value = getattr(options, option)
1836
3036
if value is not None:
1837
3037
server_settings[option] = value
1838
3038
del options
1839
3039
# Force all strings to be unicode
1840
3040
for option in server_settings.keys():
1841
if type(server_settings[option]) is str:
1842
server_settings[option] = unicode(server_settings[option])
3041
if isinstance(server_settings[option], bytes):
3042
server_settings[option] = (server_settings[option]
3043
.decode("utf-8"))
3044
# Force all boolean options to be boolean
3045
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3046
"foreground", "zeroconf"):
3047
server_settings[option] = bool(server_settings[option])
3048
# Debug implies foreground
3049
if server_settings["debug"]:
3050
server_settings["foreground"] = True
1843
3051
# Now we have our good server settings in "server_settings"
1844
3052
1845
3053
##################################################################
1846
3054
3055
if (not server_settings["zeroconf"]
3056
and not (server_settings["port"]
3057
or server_settings["socket"] != "")):
3058
parser.error("Needs port or socket to work without Zeroconf")
3059
1847
3060
# For convenience
1848
3061
debug = server_settings["debug"]
1849
3062
debuglevel = server_settings["debuglevel"]
1850
3063
use_dbus = server_settings["use_dbus"]
1851
3064
use_ipv6 = server_settings["use_ipv6"]
1852
3065
stored_state_path = os.path.join(server_settings["statedir"],
3066
stored_state_file)
3067
foreground = server_settings["foreground"]
3068
zeroconf = server_settings["zeroconf"]
3069
3070
if debug:
3071
initlogger(debug, logging.DEBUG)
3072
else:
3073
if not debuglevel:
3074
initlogger(debug)
3075
else:
3076
level = getattr(logging, debuglevel.upper())
3077
initlogger(debug, level)
3078
1853
3079
if server_settings["servicename"] != "Mandos":
1854
syslogger.setFormatter(logging.Formatter
1855
('Mandos (%s) [%%(process)d]:'
1856
' %%(levelname)s: %%(message)s'
1857
% server_settings["servicename"]))
1858
3080
syslogger.setFormatter(
3081
logging.Formatter('Mandos ({}) [%(process)d]:'
3082
' %(levelname)s: %(message)s'.format(
3083
server_settings["servicename"])))
3084
1859
3085
# Parse config file with clients
1860
client_defaults = { "timeout": "5m",
1861
"extended_timeout": "15m",
1862
"interval": "2m",
1863
"checker": "fping -q -- %%(host)s",
1864
"host": "",
1865
"approval_delay": "0s",
1866
"approval_duration": "1s",
1867
}
1868
client_config = configparser.SafeConfigParser(client_defaults)
3086
client_config = configparser.ConfigParser(Client.client_defaults)
1869
3087
client_config.read(os.path.join(server_settings["configdir"],
1870
3088
"clients.conf"))
1871
3089
1872
3090
global mandos_dbus_service
1873
3091
mandos_dbus_service = None
1874
1875
tcp_server = MandosServer((server_settings["address"],
1876
server_settings["port"]),
1877
ClientHandler,
1878
interface=(server_settings["interface"]
1879
or None),
1880
use_ipv6=use_ipv6,
1881
gnutls_priority=
1882
server_settings["priority"],
1883
use_dbus=use_dbus)
1884
if not debug:
1885
pidfilename = "/var/run/mandos.pid"
1886
try:
1887
pidfile = open(pidfilename, "w")
1888
except IOError:
1889
logger.error("Could not open file %r", pidfilename)
1890
1891
try:
1892
uid = pwd.getpwnam("_mandos").pw_uid
1893
gid = pwd.getpwnam("_mandos").pw_gid
1894
except KeyError:
1895
try:
1896
uid = pwd.getpwnam("mandos").pw_uid
1897
gid = pwd.getpwnam("mandos").pw_gid
3092
3093
socketfd = None
3094
if server_settings["socket"] != "":
3095
socketfd = server_settings["socket"]
3096
tcp_server = MandosServer(
3097
(server_settings["address"], server_settings["port"]),
3098
ClientHandler,
3099
interface=(server_settings["interface"] or None),
3100
use_ipv6=use_ipv6,
3101
gnutls_priority=server_settings["priority"],
3102
use_dbus=use_dbus,
3103
socketfd=socketfd)
3104
if not foreground:
3105
pidfilename = "/run/mandos.pid"
3106
if not os.path.isdir("/run/."):
3107
pidfilename = "/var/run/mandos.pid"
3108
pidfile = None
3109
try:
3110
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3111
except IOError as e:
3112
logger.error("Could not open file %r", pidfilename,
3113
exc_info=e)
3114
3115
for name, group in (("_mandos", "_mandos"),
3116
("mandos", "mandos"),
3117
("nobody", "nogroup")):
3118
try:
3119
uid = pwd.getpwnam(name).pw_uid
3120
gid = pwd.getpwnam(group).pw_gid
3121
break
1898
3122
except KeyError:
1899
try:
1900
uid = pwd.getpwnam("nobody").pw_uid
1901
gid = pwd.getpwnam("nobody").pw_gid
1902
except KeyError:
1903
uid = 65534
1904
gid = 65534
3123
continue
3124
else:
3125
uid = 65534
3126
gid = 65534
1905
3127
try:
1906
3128
os.setgid(gid)
1907
3129
os.setuid(uid)
3130
if debug:
3131
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3132
gid))
1908
3133
except OSError as error:
1909
if error[0] != errno.EPERM:
1910
raise error
1911
1912
if not debug and not debuglevel:
1913
syslogger.setLevel(logging.WARNING)
1914
console.setLevel(logging.WARNING)
1915
if debuglevel:
1916
level = getattr(logging, debuglevel.upper())
1917
syslogger.setLevel(level)
1918
console.setLevel(level)
1919
3134
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3135
.format(uid, gid, os.strerror(error.errno)))
3136
if error.errno != errno.EPERM:
3137
raise
3138
1920
3139
if debug:
1921
3140
# Enable all possible GnuTLS debugging
1922
3141
1923
3142
# "Use a log level over 10 to enable all debugging options."
1924
3143
# - GnuTLS manual
1925
gnutls.library.functions.gnutls_global_set_log_level(11)
1926
1927
@gnutls.library.types.gnutls_log_func
3144
gnutls.global_set_log_level(11)
3145
3146
@gnutls.log_func
1928
3147
def debug_gnutls(level, string):
1929
3148
logger.debug("GnuTLS: %s", string[:-1])
1930
1931
(gnutls.library.functions
1932
.gnutls_global_set_log_function(debug_gnutls))
1933
3149
3150
gnutls.global_set_log_function(debug_gnutls)
3151
1934
3152
# Redirect stdin so all checkers get /dev/null
1935
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3153
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1936
3154
os.dup2(null, sys.stdin.fileno())
1937
3155
if null > 2:
1938
3156
os.close(null)
1939
else:
1940
# No console logging
1941
logger.removeHandler(console)
1942
3157
1943
3158
# Need to fork before connecting to D-Bus
1944
if not debug:
3159
if not foreground:
1945
3160
# Close all input and output, do double fork, etc.
1946
3161
daemon()
1947
3162
3163
if gi.version_info < (3, 10, 2):
3164
# multiprocessing will use threads, so before we use GLib we
3165
# need to inform GLib that threads will be used.
3166
GLib.threads_init()
3167
1948
3168
global main_loop
1949
3169
# From the Avahi example code
1950
DBusGMainLoop(set_as_default=True )
1951
main_loop = gobject.MainLoop()
3170
DBusGMainLoop(set_as_default=True)
3171
main_loop = GLib.MainLoop()
1952
3172
bus = dbus.SystemBus()
1953
3173
# End of Avahi example code
1954
3174
if use_dbus:
1955
3175
try:
1956
bus_name = dbus.service.BusName("se.bsnet.fukt.Mandos",
1957
bus, do_not_queue=True)
1958
bus_name2 = dbus.service.BusName("se.recompile.Mandos",
1959
bus, do_not_queue=True)
1960
except dbus.exceptions.NameExistsException as e:
1961
logger.error(unicode(e) + ", disabling D-Bus")
3176
bus_name = dbus.service.BusName("se.recompile.Mandos",
3177
bus,
3178
do_not_queue=True)
3179
old_bus_name = dbus.service.BusName(
3180
"se.bsnet.fukt.Mandos", bus,
3181
do_not_queue=True)
3182
except dbus.exceptions.DBusException as e:
3183
logger.error("Disabling D-Bus:", exc_info=e)
1962
3184
use_dbus = False
1963
3185
server_settings["use_dbus"] = False
1964
3186
tcp_server.use_dbus = False
1965
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1966
service = AvahiService(name = server_settings["servicename"],
1967
servicetype = "_mandos._tcp",
1968
protocol = protocol, bus = bus)
1969
if server_settings["interface"]:
1970
service.interface = (if_nametoindex
1971
(str(server_settings["interface"])))
1972
3187
if zeroconf:
3188
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3189
service = AvahiServiceToSyslog(
3190
name=server_settings["servicename"],
3191
servicetype="_mandos._tcp",
3192
protocol=protocol,
3193
bus=bus)
3194
if server_settings["interface"]:
3195
service.interface = if_nametoindex(
3196
server_settings["interface"].encode("utf-8"))
3197
1973
3198
global multiprocessing_manager
1974
3199
multiprocessing_manager = multiprocessing.Manager()
1975
3200
1976
3201
client_class = Client
1977
3202
if use_dbus:
1978
client_class = functools.partial(ClientDBus, bus = bus)
1979
def client_config_items(config, section):
1980
special_settings = {
1981
"approved_by_default":
1982
lambda: config.getboolean(section,
1983
"approved_by_default"),
1984
}
1985
for name, value in config.items(section):
3203
client_class = functools.partial(ClientDBus, bus=bus)
3204
3205
client_settings = Client.config_parser(client_config)
3206
old_client_settings = {}
3207
clients_data = {}
3208
3209
# This is used to redirect stdout and stderr for checker processes
3210
global wnull
3211
wnull = open(os.devnull, "w") # A writable /dev/null
3212
# Only used if server is running in foreground but not in debug
3213
# mode
3214
if debug or not foreground:
3215
wnull.close()
3216
3217
# Get client data and settings from last running state.
3218
if server_settings["restore"]:
3219
try:
3220
with open(stored_state_path, "rb") as stored_state:
3221
if sys.version_info.major == 2:
3222
clients_data, old_client_settings = pickle.load(
3223
stored_state)
3224
else:
3225
bytes_clients_data, bytes_old_client_settings = (
3226
pickle.load(stored_state, encoding="bytes"))
3227
# Fix bytes to strings
3228
# clients_data
3229
# .keys()
3230
clients_data = {(key.decode("utf-8")
3231
if isinstance(key, bytes)
3232
else key): value
3233
for key, value in
3234
bytes_clients_data.items()}
3235
del bytes_clients_data
3236
for key in clients_data:
3237
value = {(k.decode("utf-8")
3238
if isinstance(k, bytes) else k): v
3239
for k, v in
3240
clients_data[key].items()}
3241
clients_data[key] = value
3242
# .client_structure
3243
value["client_structure"] = [
3244
(s.decode("utf-8")
3245
if isinstance(s, bytes)
3246
else s) for s in
3247
value["client_structure"]]
3248
# .name & .host
3249
for k in ("name", "host"):
3250
if isinstance(value[k], bytes):
3251
value[k] = value[k].decode("utf-8")
3252
if "key_id" not in value:
3253
value["key_id"] = ""
3254
elif "fingerprint" not in value:
3255
value["fingerprint"] = ""
3256
# old_client_settings
3257
# .keys()
3258
old_client_settings = {
3259
(key.decode("utf-8")
3260
if isinstance(key, bytes)
3261
else key): value
3262
for key, value in
3263
bytes_old_client_settings.items()}
3264
del bytes_old_client_settings
3265
# .host
3266
for value in old_client_settings.values():
3267
if isinstance(value["host"], bytes):
3268
value["host"] = (value["host"]
3269
.decode("utf-8"))
3270
os.remove(stored_state_path)
3271
except IOError as e:
3272
if e.errno == errno.ENOENT:
3273
logger.warning("Could not load persistent state:"
3274
" {}".format(os.strerror(e.errno)))
3275
else:
3276
logger.critical("Could not load persistent state:",
3277
exc_info=e)
3278
raise
3279
except EOFError as e:
3280
logger.warning("Could not load persistent state: "
3281
"EOFError:",
3282
exc_info=e)
3283
3284
with PGPEngine() as pgp:
3285
for client_name, client in clients_data.items():
3286
# Skip removed clients
3287
if client_name not in client_settings:
3288
continue
3289
3290
# Decide which value to use after restoring saved state.
3291
# We have three different values: Old config file,
3292
# new config file, and saved state.
3293
# New config value takes precedence if it differs from old
3294
# config value, otherwise use saved state.
3295
for name, value in client_settings[client_name].items():
3296
try:
3297
# For each value in new config, check if it
3298
# differs from the old config value (Except for
3299
# the "secret" attribute)
3300
if (name != "secret"
3301
and (value !=
3302
old_client_settings[client_name][name])):
3303
client[name] = value
3304
except KeyError:
3305
pass
3306
3307
# Clients who has passed its expire date can still be
3308
# enabled if its last checker was successful. A Client
3309
# whose checker succeeded before we stored its state is
3310
# assumed to have successfully run all checkers during
3311
# downtime.
3312
if client["enabled"]:
3313
if datetime.datetime.utcnow() >= client["expires"]:
3314
if not client["last_checked_ok"]:
3315
logger.warning(
3316
"disabling client {} - Client never "
3317
"performed a successful checker".format(
3318
client_name))
3319
client["enabled"] = False
3320
elif client["last_checker_status"] != 0:
3321
logger.warning(
3322
"disabling client {} - Client last"
3323
" checker failed with error code"
3324
" {}".format(
3325
client_name,
3326
client["last_checker_status"]))
3327
client["enabled"] = False
3328
else:
3329
client["expires"] = (
3330
datetime.datetime.utcnow()
3331
+ client["timeout"])
3332
logger.debug("Last checker succeeded,"
3333
" keeping {} enabled".format(
3334
client_name))
1986
3335
try:
1987
yield (name, special_settings[name]())
1988
except KeyError:
1989
yield (name, value)
1990
1991
tcp_server.clients.update(set(
1992
client_class(name = section,
1993
config= dict(client_config_items(
1994
client_config, section)))
1995
for section in client_config.sections()))
3336
client["secret"] = pgp.decrypt(
3337
client["encrypted_secret"],
3338
client_settings[client_name]["secret"])
3339
except PGPError:
3340
# If decryption fails, we use secret from new settings
3341
logger.debug("Failed to decrypt {} old secret".format(
3342
client_name))
3343
client["secret"] = (client_settings[client_name]
3344
["secret"])
3345
3346
# Add/remove clients based on new changes made to config
3347
for client_name in (set(old_client_settings)
3348
- set(client_settings)):
3349
del clients_data[client_name]
3350
for client_name in (set(client_settings)
3351
- set(old_client_settings)):
3352
clients_data[client_name] = client_settings[client_name]
3353
3354
# Create all client objects
3355
for client_name, client in clients_data.items():
3356
tcp_server.clients[client_name] = client_class(
3357
name=client_name,
3358
settings=client,
3359
server_settings=server_settings)
3360
1996
3361
if not tcp_server.clients:
1997
3362
logger.warning("No clients defined")
1998
1999
if not debug:
2000
try:
2001
with pidfile:
2002
pid = os.getpid()
2003
pidfile.write(str(pid) + "\n".encode("utf-8"))
2004
del pidfile
2005
except IOError:
2006
logger.error("Could not write to file %r with PID %d",
2007
pidfilename, pid)
2008
except NameError:
2009
# "pidfile" was never created
2010
pass
3363
3364
if not foreground:
3365
if pidfile is not None:
3366
pid = os.getpid()
3367
try:
3368
with pidfile:
3369
print(pid, file=pidfile)
3370
except IOError:
3371
logger.error("Could not write to file %r with PID %d",
3372
pidfilename, pid)
3373
del pidfile
2011
3374
del pidfilename
2012
2013
signal.signal(signal.SIGINT, signal.SIG_IGN)
2014
2015
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2016
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2017
3375
3376
for termsig in (signal.SIGHUP, signal.SIGTERM):
3377
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3378
lambda: main_loop.quit() and False)
3379
2018
3380
if use_dbus:
2019
class MandosDBusService(dbus.service.Object):
3381
3382
@alternate_dbus_interfaces(
3383
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3384
class MandosDBusService(DBusObjectWithObjectManager):
2020
3385
"""A D-Bus proxy object"""
3386
2021
3387
def __init__(self):
2022
3388
dbus.service.Object.__init__(self, bus, "/")
2023
_interface = "se.bsnet.fukt.Mandos"
2024
3389
3390
_interface = "se.recompile.Mandos"
3391
2025
3392
@dbus.service.signal(_interface, signature="o")
2026
3393
def ClientAdded(self, objpath):
2027
3394
"D-Bus signal"
2028
3395
pass
2029
3396
2030
3397
@dbus.service.signal(_interface, signature="ss")
2031
def ClientNotFound(self, fingerprint, address):
3398
def ClientNotFound(self, key_id, address):
2032
3399
"D-Bus signal"
2033
3400
pass
2034
3401
3402
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3403
"true"})
2035
3404
@dbus.service.signal(_interface, signature="os")
2036
3405
def ClientRemoved(self, objpath, name):
2037
3406
"D-Bus signal"
2038
3407
pass
2039
3408
3409
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3410
"true"})
2040
3411
@dbus.service.method(_interface, out_signature="ao")
2041
3412
def GetAllClients(self):
2042
3413
"D-Bus method"
2043
return dbus.Array(c.dbus_object_path
2044
for c in tcp_server.clients)
2045
3414
return dbus.Array(c.dbus_object_path for c in
3415
tcp_server.clients.values())
3416
3417
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3418
"true"})
2046
3419
@dbus.service.method(_interface,
2047
3420
out_signature="a{oa{sv}}")
2048
3421
def GetAllClientsWithProperties(self):
2049
3422
"D-Bus method"
2050
3423
return dbus.Dictionary(
2051
((c.dbus_object_path, c.GetAll(""))
2052
for c in tcp_server.clients),
3424
{c.dbus_object_path: c.GetAll(
3425
"se.recompile.Mandos.Client")
3426
for c in tcp_server.clients.values()},
2053
3427
signature="oa{sv}")
2054
3428
2055
3429
@dbus.service.method(_interface, in_signature="o")
2056
3430
def RemoveClient(self, object_path):
2057
3431
"D-Bus method"
2058
for c in tcp_server.clients:
3432
for c in tcp_server.clients.values():
2059
3433
if c.dbus_object_path == object_path:
2060
tcp_server.clients.remove(c)
3434
del tcp_server.clients[c.name]
2061
3435
c.remove_from_connection()
2062
# Don't signal anything except ClientRemoved
3436
# Don't signal the disabling
2063
3437
c.disable(quiet=True)
2064
# Emit D-Bus signal
2065
self.ClientRemoved(object_path, c.name)
3438
# Emit D-Bus signal for removal
3439
self.client_removed_signal(c)
2066
3440
return
2067
3441
raise KeyError(object_path)
2068
3442
2069
3443
del _interface
2070
3444
3445
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3446
out_signature="a{oa{sa{sv}}}")
3447
def GetManagedObjects(self):
3448
"""D-Bus method"""
3449
return dbus.Dictionary(
3450
{client.dbus_object_path:
3451
dbus.Dictionary(
3452
{interface: client.GetAll(interface)
3453
for interface in
3454
client._get_all_interface_names()})
3455
for client in tcp_server.clients.values()})
3456
3457
def client_added_signal(self, client):
3458
"""Send the new standard signal and the old signal"""
3459
if use_dbus:
3460
# New standard signal
3461
self.InterfacesAdded(
3462
client.dbus_object_path,
3463
dbus.Dictionary(
3464
{interface: client.GetAll(interface)
3465
for interface in
3466
client._get_all_interface_names()}))
3467
# Old signal
3468
self.ClientAdded(client.dbus_object_path)
3469
3470
def client_removed_signal(self, client):
3471
"""Send the new standard signal and the old signal"""
3472
if use_dbus:
3473
# New standard signal
3474
self.InterfacesRemoved(
3475
client.dbus_object_path,
3476
client._get_all_interface_names())
3477
# Old signal
3478
self.ClientRemoved(client.dbus_object_path,
3479
client.name)
3480
2071
3481
mandos_dbus_service = MandosDBusService()
2072
3482
3483
# Save modules to variables to exempt the modules from being
3484
# unloaded before the function registered with atexit() is run.
3485
mp = multiprocessing
3486
wn = wnull
3487
2073
3488
def cleanup():
2074
3489
"Cleanup function; run on exit"
2075
service.cleanup()
2076
3490
if zeroconf:
3491
service.cleanup()
3492
3493
mp.active_children()
3494
wn.close()
3495
if not (tcp_server.clients or client_settings):
3496
return
3497
3498
# Store client before exiting. Secrets are encrypted with key
3499
# based on what config file has. If config file is
3500
# removed/edited, old secret will thus be unrecovable.
3501
clients = {}
3502
with PGPEngine() as pgp:
3503
for client in tcp_server.clients.values():
3504
key = client_settings[client.name]["secret"]
3505
client.encrypted_secret = pgp.encrypt(client.secret,
3506
key)
3507
client_dict = {}
3508
3509
# A list of attributes that can not be pickled
3510
# + secret.
3511
exclude = {"bus", "changedstate", "secret",
3512
"checker", "server_settings"}
3513
for name, typ in inspect.getmembers(dbus.service
3514
.Object):
3515
exclude.add(name)
3516
3517
client_dict["encrypted_secret"] = (client
3518
.encrypted_secret)
3519
for attr in client.client_structure:
3520
if attr not in exclude:
3521
client_dict[attr] = getattr(client, attr)
3522
3523
clients[client.name] = client_dict
3524
del client_settings[client.name]["secret"]
3525
3526
try:
3527
with tempfile.NamedTemporaryFile(
3528
mode='wb',
3529
suffix=".pickle",
3530
prefix='clients-',
3531
dir=os.path.dirname(stored_state_path),
3532
delete=False) as stored_state:
3533
pickle.dump((clients, client_settings), stored_state,
3534
protocol=2)
3535
tempname = stored_state.name
3536
os.rename(tempname, stored_state_path)
3537
except (IOError, OSError) as e:
3538
if not debug:
3539
try:
3540
os.remove(tempname)
3541
except NameError:
3542
pass
3543
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3544
logger.warning("Could not save persistent state: {}"
3545
.format(os.strerror(e.errno)))
3546
else:
3547
logger.warning("Could not save persistent state:",
3548
exc_info=e)
3549
raise
3550
3551
# Delete all clients, and settings from config
2077
3552
while tcp_server.clients:
2078
client = tcp_server.clients.pop()
3553
name, client = tcp_server.clients.popitem()
2079
3554
if use_dbus:
2080
3555
client.remove_from_connection()
2081
client.disable_hook = None
2082
# Don't signal anything except ClientRemoved
3556
# Don't signal the disabling
2083
3557
client.disable(quiet=True)
3558
# Emit D-Bus signal for removal
2084
3559
if use_dbus:
2085
# Emit D-Bus signal
2086
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
2087
client.name)
2088
3560
mandos_dbus_service.client_removed_signal(client)
3561
client_settings.clear()
3562
2089
3563
atexit.register(cleanup)
2090
2091
for client in tcp_server.clients:
3564
3565
for client in tcp_server.clients.values():
2092
3566
if use_dbus:
2093
# Emit D-Bus signal
2094
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2095
client.enable()
2096
3567
# Emit D-Bus signal for adding
3568
mandos_dbus_service.client_added_signal(client)
3569
# Need to initiate checking of clients
3570
if client.enabled:
3571
client.init_checker()
3572
2097
3573
tcp_server.enable()
2098
3574
tcp_server.server_activate()
2099
3575
2100
3576
# Find out what port we got
2101
service.port = tcp_server.socket.getsockname()[1]
3577
if zeroconf:
3578
service.port = tcp_server.socket.getsockname()[1]
2102
3579
if use_ipv6:
2103
3580
logger.info("Now listening on address %r, port %d,"
2104
" flowinfo %d, scope_id %d"
2105
% tcp_server.socket.getsockname())
3581
" flowinfo %d, scope_id %d",
3582
*tcp_server.socket.getsockname())
2106
3583
else: # IPv4
2107
logger.info("Now listening on address %r, port %d"
2108
% tcp_server.socket.getsockname())
2109
2110
#service.interface = tcp_server.socket.getsockname()[3]
2111
3584
logger.info("Now listening on address %r, port %d",
3585
*tcp_server.socket.getsockname())
3586
3587
# service.interface = tcp_server.socket.getsockname()[3]
3588
2112
3589
try:
2113
# From the Avahi example code
2114
try:
2115
service.activate()
2116
except dbus.exceptions.DBusException as error:
2117
logger.critical("DBusException: %s", error)
2118
cleanup()
2119
sys.exit(1)
2120
# End of Avahi example code
2121
2122
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2123
lambda *args, **kwargs:
2124
(tcp_server.handle_request
2125
(*args[2:], **kwargs) or True))
2126
3590
if zeroconf:
3591
# From the Avahi example code
3592
try:
3593
service.activate()
3594
except dbus.exceptions.DBusException as error:
3595
logger.critical("D-Bus Exception", exc_info=error)
3596
cleanup()
3597
sys.exit(1)
3598
# End of Avahi example code
3599
3600
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3601
lambda *args, **kwargs:
3602
(tcp_server.handle_request
3603
(*args[2:], **kwargs) or True))
3604
2127
3605
logger.debug("Starting main loop")
2128
3606
main_loop.run()
2129
3607
except AvahiError as error:
2130
logger.critical("AvahiError: %s", error)
3608
logger.critical("Avahi Error", exc_info=error)
2131
3609
cleanup()
2132
3610
sys.exit(1)
2133
3611
except KeyboardInterrupt:
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0