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- Committer: Björn Påhlsson
- Date: 2011-11-09 11:16:17 UTC
- mto: (518.2.5 persistent-state-gpgme)
- mto: This revision was merged to the branch mainline in revision 520.
- Revision ID: belorn@fukt.bsnet.se-20111109111617-jpey2sy4dupqzabc
Persistent state: New feature. Client state is now stored when mandos
server exits, and restored when starting up. Secrets
are encrypted with key based on clients config file.
--no-restore: New argument to mandos server. Disables restore
functionallity
minor changes: clients are now dicts!
server exits, and restored when starting up. Secrets
are encrypted with key based on clients config file.
--no-restore: New argument to mandos server. Disables restore
functionallity
minor changes: clients are now dicts!
- files added:
- initramfs-tools-hook-conf
- files removed:
- bugs.xml
- debian/tests
- debian/upstream
- dracut-module
- network-hooks.d
- plugin-helpers
- 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 © 2008-2019 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
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
21
19
# the Free Software Foundation, either version 3 of the License, or
22
20
# (at your option) any later version.
23
21
#
24
# Mandos is distributed in the hope that it will be useful, but
25
# WITHOUT ANY WARRANTY; without even the implied warranty of
22
# This program is distributed in the hope that it will be useful,
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
26
24
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
27
25
# GNU General Public License for more details.
28
#
26
#
29
27
# You should have received a copy of the GNU General Public License
30
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
31
#
28
# along with this program. If not, see
29
# <http://www.gnu.org/licenses/>.
30
#
32
31
# Contact the authors at <mandos@recompile.se>.
33
#
32
#
34
33
35
34
from __future__ import (division, absolute_import, print_function,
36
35
unicode_literals)
37
36
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
37
import SocketServer as socketserver
47
38
import socket
48
39
import argparse
49
40
import datetime
50
41
import errno
51
try:
52
import ConfigParser as configparser
53
except ImportError:
54
import configparser
42
import gnutls.crypto
43
import gnutls.connection
44
import gnutls.errors
45
import gnutls.library.functions
46
import gnutls.library.constants
47
import gnutls.library.types
48
import ConfigParser as configparser
55
49
import sys
56
50
import re
57
51
import os
66
60
import struct
67
61
import fcntl
68
62
import functools
69
try:
70
import cPickle as pickle
71
except ImportError:
72
import pickle
63
import cPickle as pickle
73
64
import multiprocessing
74
65
import types
75
import binascii
76
import tempfile
77
import itertools
78
import collections
79
import codecs
66
import hashlib
80
67
81
68
import dbus
82
69
import dbus.service
83
import gi
84
from gi.repository import GLib
70
import gobject
71
import avahi
85
72
from dbus.mainloop.glib import DBusGMainLoop
86
73
import ctypes
87
74
import ctypes.util
88
75
import xml.dom.minidom
89
76
import inspect
77
import Crypto.Cipher.AES
90
78
91
# Try to find the value of SO_BINDTODEVICE:
92
79
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:
95
80
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
96
81
except AttributeError:
97
82
try:
98
# This is where SO_BINDTODEVICE was up to and including Python
99
# 2.6, and also 3.2:
100
83
from IN import SO_BINDTODEVICE
101
84
except ImportError:
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
85
SO_BINDTODEVICE = None
86
87
88
version = "1.4.1"
89
90
stored_state_path = "/var/lib/mandos/clients.pickle"
91
92
#logger = logging.getLogger('mandos')
93
logger = logging.Logger('mandos')
94
syslogger = (logging.handlers.SysLogHandler
95
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
96
address = str("/dev/log")))
97
syslogger.setFormatter(logging.Formatter
98
('Mandos [%(process)d]: %(levelname)s:'
99
' %(message)s'))
100
logger.addHandler(syslogger)
101
102
console = logging.StreamHandler()
103
console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'
104
' %(levelname)s:'
105
' %(message)s'))
106
logger.addHandler(console)
306
107
307
108
class AvahiError(Exception):
308
109
def __init__(self, value, *args, **kwargs):
309
110
self.value = value
310
return super(AvahiError, self).__init__(value, *args,
311
**kwargs)
312
111
super(AvahiError, self).__init__(value, *args, **kwargs)
112
def __unicode__(self):
113
return unicode(repr(self.value))
313
114
314
115
class AvahiServiceError(AvahiError):
315
116
pass
316
117
317
318
118
class AvahiGroupError(AvahiError):
319
119
pass
320
120
321
121
322
122
class AvahiService(object):
323
123
"""An Avahi (Zeroconf) service.
324
124
325
125
Attributes:
326
126
interface: integer; avahi.IF_UNSPEC or an interface index.
327
127
Used to optionally bind to the specified interface.
328
128
name: string; Example: 'Mandos'
329
129
type: string; Example: '_mandos._tcp'.
330
See <https://www.iana.org/assignments/service-names-port-numbers>
130
See <http://www.dns-sd.org/ServiceTypes.html>
331
131
port: integer; what port to announce
332
132
TXT: list of strings; TXT record for the service
333
133
domain: string; Domain to publish on, default to .local if empty.
339
139
server: D-Bus Server
340
140
bus: dbus.SystemBus()
341
141
"""
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
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
143
servicetype = None, port = None, TXT = None,
144
domain = "", host = "", max_renames = 32768,
145
protocol = avahi.PROTO_UNSPEC, bus = None):
354
146
self.interface = interface
355
147
self.name = name
356
148
self.type = servicetype
365
157
self.server = None
366
158
self.bus = bus
367
159
self.entry_group_state_changed_match = None
368
369
def rename(self, remove=True):
160
def rename(self):
370
161
"""Derived from the Avahi example code"""
371
162
if self.rename_count >= self.max_renames:
372
163
logger.critical("No suitable Zeroconf service name found"
373
164
" after %i retries, exiting.",
374
165
self.rename_count)
375
166
raise AvahiServiceError("Too many renames")
376
self.name = str(
377
self.server.GetAlternativeServiceName(self.name))
378
self.rename_count += 1
167
self.name = unicode(self.server
168
.GetAlternativeServiceName(self.name))
379
169
logger.info("Changing Zeroconf service name to %r ...",
380
170
self.name)
381
if remove:
382
self.remove()
171
syslogger.setFormatter(logging.Formatter
172
('Mandos (%s) [%%(process)d]:'
173
' %%(levelname)s: %%(message)s'
174
% self.name))
175
self.remove()
383
176
try:
384
177
self.add()
385
178
except dbus.exceptions.DBusException as error:
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
179
logger.critical("DBusException: %s", error)
180
self.cleanup()
181
os._exit(1)
182
self.rename_count += 1
395
183
def remove(self):
396
184
"""Derived from the Avahi example code"""
397
185
if self.entry_group_state_changed_match is not None:
399
187
self.entry_group_state_changed_match = None
400
188
if self.group is not None:
401
189
self.group.Reset()
402
403
190
def add(self):
404
191
"""Derived from the Avahi example code"""
405
192
self.remove()
410
197
avahi.DBUS_INTERFACE_ENTRY_GROUP)
411
198
self.entry_group_state_changed_match = (
412
199
self.group.connect_to_signal(
413
'StateChanged', self.entry_group_state_changed))
200
'StateChanged', self .entry_group_state_changed))
414
201
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
415
202
self.name, self.type)
416
203
self.group.AddService(
422
209
dbus.UInt16(self.port),
423
210
avahi.string_array_to_txt_array(self.TXT))
424
211
self.group.Commit()
425
426
212
def entry_group_state_changed(self, state, error):
427
213
"""Derived from the Avahi example code"""
428
214
logger.debug("Avahi entry group state change: %i", state)
429
215
430
216
if state == avahi.ENTRY_GROUP_ESTABLISHED:
431
217
logger.debug("Zeroconf service established.")
432
218
elif state == avahi.ENTRY_GROUP_COLLISION:
434
220
self.rename()
435
221
elif state == avahi.ENTRY_GROUP_FAILURE:
436
222
logger.critical("Avahi: Error in group state changed %s",
437
str(error))
438
raise AvahiGroupError("State changed: {!s}".format(error))
439
223
unicode(error))
224
raise AvahiGroupError("State changed: %s"
225
% unicode(error))
440
226
def cleanup(self):
441
227
"""Derived from the Avahi example code"""
442
228
if self.group is not None:
443
229
try:
444
230
self.group.Free()
445
231
except (dbus.exceptions.UnknownMethodException,
446
dbus.exceptions.DBusException):
232
dbus.exceptions.DBusException) as e:
447
233
pass
448
234
self.group = None
449
235
self.remove()
450
451
236
def server_state_changed(self, state, error=None):
452
237
"""Derived from the Avahi example code"""
453
238
logger.debug("Avahi server state change: %i", state)
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
}
239
bad_states = { avahi.SERVER_INVALID:
240
"Zeroconf server invalid",
241
avahi.SERVER_REGISTERING: None,
242
avahi.SERVER_COLLISION:
243
"Zeroconf server name collision",
244
avahi.SERVER_FAILURE:
245
"Zeroconf server failure" }
460
246
if state in bad_states:
461
247
if bad_states[state] is not None:
462
248
if error is None:
465
251
logger.error(bad_states[state] + ": %r", error)
466
252
self.cleanup()
467
253
elif state == avahi.SERVER_RUNNING:
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)
254
self.add()
480
255
else:
481
256
if error is None:
482
257
logger.debug("Unknown state: %r", state)
483
258
else:
484
259
logger.debug("Unknown state: %r: %r", state, error)
485
486
260
def activate(self):
487
261
"""Derived from the Avahi example code"""
488
262
if self.server is None:
492
266
follow_name_owner_changes=True),
493
267
avahi.DBUS_INTERFACE_SERVER)
494
268
self.server.connect_to_signal("StateChanged",
495
self.server_state_changed)
269
self.server_state_changed)
496
270
self.server_state_changed(self.server.GetState())
497
271
498
272
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
273
def _timedelta_to_milliseconds(td):
274
"Convert a datetime.timedelta() to milliseconds"
275
return ((td.days * 24 * 60 * 60 * 1000)
276
+ (td.seconds * 1000)
277
+ (td.microseconds // 1000))
278
821
279
class Client(object):
822
280
"""A representation of a client host served by this server.
823
281
824
282
Attributes:
825
approved: bool(); 'None' if not yet approved/disapproved
283
_approved: bool(); 'None' if not yet approved/disapproved
826
284
approval_delay: datetime.timedelta(); Time to wait for approval
827
285
approval_duration: datetime.timedelta(); Duration of one approval
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
286
checker: subprocess.Popen(); a running checker process used
287
to see if the client lives.
288
'None' if no process is running.
289
checker_callback_tag: a gobject event source tag, or None
832
290
checker_command: string; External command which is run to check
833
291
if client lives. %() expansions are done at
834
292
runtime with vars(self) as dict, so that for
835
293
instance %(name)s can be used in the command.
836
checker_initiator_tag: a GLib event source tag, or None
294
checker_initiator_tag: a gobject event source tag, or None
837
295
created: datetime.datetime(); (UTC) object creation
838
296
client_structure: Object describing what attributes a client has
839
297
and is used for storing the client at exit
840
298
current_checker_command: string; current running checker_command
841
disable_initiator_tag: a GLib event source tag, or None
299
disable_initiator_tag: a gobject event source tag, or None
842
300
enabled: bool()
843
301
fingerprint: string (40 or 32 hexadecimal digits); used to
844
uniquely identify an OpenPGP client
845
key_id: string (64 hexadecimal digits); used to uniquely identify
846
a client using raw public keys
302
uniquely identify the client
847
303
host: string; available for use by the checker command
848
304
interval: datetime.timedelta(); How often to start a new checker
849
305
last_approval_request: datetime.datetime(); (UTC) or None
850
306
last_checked_ok: datetime.datetime(); (UTC) or None
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
307
Last_checker_status: integer between 0 and 255 reflecting exit status
308
of last checker. -1 reflect crashed checker.
309
last_enabled: datetime.datetime(); (UTC)
857
310
name: string; from the config file, used in log messages and
858
311
D-Bus identifiers
859
312
secret: bytestring; sent verbatim (over TLS) to client
860
313
timeout: datetime.timedelta(); How long from last_checked_ok
861
314
until this client is disabled
862
extended_timeout: extra long timeout when secret has been sent
315
extended_timeout: extra long timeout when password has been sent
863
316
runtime_expansions: Allowed attributes for runtime expansion.
864
317
expires: datetime.datetime(); time (UTC) when a client will be
865
318
disabled, or None
866
server_settings: The server_settings dict from main()
867
319
"""
868
320
869
321
runtime_expansions = ("approval_delay", "approval_duration",
870
"created", "enabled", "expires", "key_id",
871
"fingerprint", "host", "interval",
872
"last_approval_request", "last_checked_ok",
322
"created", "enabled", "fingerprint",
323
"host", "interval", "last_checked_ok",
873
324
"last_enabled", "name", "timeout")
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):
325
326
def timeout_milliseconds(self):
327
"Return the 'timeout' attribute in milliseconds"
328
return _timedelta_to_milliseconds(self.timeout)
329
330
def extended_timeout_milliseconds(self):
331
"Return the 'extended_timeout' attribute in milliseconds"
332
return _timedelta_to_milliseconds(self.extended_timeout)
333
334
def interval_milliseconds(self):
335
"Return the 'interval' attribute in milliseconds"
336
return _timedelta_to_milliseconds(self.interval)
337
338
def approval_delay_milliseconds(self):
339
return _timedelta_to_milliseconds(self.approval_delay)
340
341
def __init__(self, name = None, config=None):
342
"""Note: the 'checker' key in 'config' sets the
343
'checker_command' attribute and *not* the 'checker'
344
attribute."""
941
345
self.name = name
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
346
if config is None:
347
config = {}
959
348
logger.debug("Creating client %r", self.name)
960
logger.debug(" Key ID: %s", self.key_id)
349
# Uppercase and remove spaces from fingerprint for later
350
# comparison purposes with return value from the fingerprint()
351
# function
352
self.fingerprint = (config["fingerprint"].upper()
353
.replace(" ", ""))
961
354
logger.debug(" Fingerprint: %s", self.fingerprint)
962
self.created = settings.get("created",
963
datetime.datetime.utcnow())
964
965
# attributes specific for this server instance
355
if "secret" in config:
356
self.secret = config["secret"].decode("base64")
357
elif "secfile" in config:
358
with open(os.path.expanduser(os.path.expandvars
359
(config["secfile"])),
360
"rb") as secfile:
361
self.secret = secfile.read()
362
else:
363
raise TypeError("No secret or secfile for client %s"
364
% self.name)
365
self.host = config.get("host", "")
366
self.created = datetime.datetime.utcnow()
367
self.enabled = True
368
self.last_approval_request = None
369
self.last_enabled = datetime.datetime.utcnow()
370
self.last_checked_ok = None
371
self.last_checker_status = 0
372
self.timeout = string_to_delta(config["timeout"])
373
self.extended_timeout = string_to_delta(config
374
["extended_timeout"])
375
self.interval = string_to_delta(config["interval"])
966
376
self.checker = None
967
377
self.checker_initiator_tag = None
968
378
self.disable_initiator_tag = None
379
self.expires = datetime.datetime.utcnow() + self.timeout
969
380
self.checker_callback_tag = None
381
self.checker_command = config["checker"]
970
382
self.current_checker_command = None
971
self.approved = None
383
self._approved = None
384
self.approved_by_default = config.get("approved_by_default",
385
True)
972
386
self.approvals_pending = 0
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("_")]
387
self.approval_delay = string_to_delta(
388
config["approval_delay"])
389
self.approval_duration = string_to_delta(
390
config["approval_duration"])
391
self.changedstate = (multiprocessing_manager
392
.Condition(multiprocessing_manager
393
.Lock()))
394
self.client_structure = [attr for attr in self.__dict__.iterkeys() if not attr.startswith("_")]
978
395
self.client_structure.append("client_structure")
979
396
980
for name, t in inspect.getmembers(
981
type(self), lambda obj: isinstance(obj, property)):
397
398
for name, t in inspect.getmembers(type(self),
399
lambda obj: isinstance(obj, property)):
982
400
if not name.startswith("_"):
983
401
self.client_structure.append(name)
984
985
# Send notice to process children that client state has changed
402
403
986
404
def send_changedstate(self):
987
with self.changedstate:
988
self.changedstate.notify_all()
989
405
self.changedstate.acquire()
406
self.changedstate.notify_all()
407
self.changedstate.release()
408
990
409
def enable(self):
991
410
"""Start this client's checker and timeout hooks"""
992
411
if getattr(self, "enabled", False):
993
412
# Already enabled
994
413
return
414
self.send_changedstate()
995
415
self.expires = datetime.datetime.utcnow() + self.timeout
996
416
self.enabled = True
997
417
self.last_enabled = datetime.datetime.utcnow()
998
418
self.init_checker()
999
self.send_changedstate()
1000
419
1001
420
def disable(self, quiet=True):
1002
421
"""Disable this client."""
1003
422
if not getattr(self, "enabled", False):
1004
423
return False
1005
424
if not quiet:
425
self.send_changedstate()
426
if not quiet:
1006
427
logger.info("Disabling client %s", self.name)
1007
if getattr(self, "disable_initiator_tag", None) is not None:
1008
GLib.source_remove(self.disable_initiator_tag)
428
if getattr(self, "disable_initiator_tag", False):
429
gobject.source_remove(self.disable_initiator_tag)
1009
430
self.disable_initiator_tag = None
1010
431
self.expires = None
1011
if getattr(self, "checker_initiator_tag", None) is not None:
1012
GLib.source_remove(self.checker_initiator_tag)
432
if getattr(self, "checker_initiator_tag", False):
433
gobject.source_remove(self.checker_initiator_tag)
1013
434
self.checker_initiator_tag = None
1014
435
self.stop_checker()
1015
436
self.enabled = False
1016
if not quiet:
1017
self.send_changedstate()
1018
# Do not run this again if called by a GLib.timeout_add
437
# Do not run this again if called by a gobject.timeout_add
1019
438
return False
1020
439
1021
440
def __del__(self):
1022
441
self.disable()
1023
442
1024
443
def init_checker(self):
1025
444
# Schedule a new checker to be started an 'interval' from now,
1026
445
# 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)
446
self.checker_initiator_tag = (gobject.timeout_add
447
(self.interval_milliseconds(),
448
self.start_checker))
1032
449
# 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)
450
self.disable_initiator_tag = (gobject.timeout_add
451
(self.timeout_milliseconds(),
452
self.disable))
1037
453
# Also start a new checker *right now*.
1038
454
self.start_checker()
1039
455
1040
def checker_callback(self, source, condition, connection,
1041
command):
456
457
def checker_callback(self, pid, condition, command):
1042
458
"""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()
1047
459
self.checker_callback_tag = None
1048
460
self.checker = None
1049
1050
if returncode >= 0:
1051
self.last_checker_status = returncode
1052
self.last_checker_signal = None
461
if os.WIFEXITED(condition):
462
self.last_checker_status = os.WEXITSTATUS(condition)
1053
463
if self.last_checker_status == 0:
1054
464
logger.info("Checker for %(name)s succeeded",
1055
465
vars(self))
1056
466
self.checked_ok()
1057
467
else:
1058
logger.info("Checker for %(name)s failed", vars(self))
468
logger.info("Checker for %(name)s failed",
469
vars(self))
1059
470
else:
1060
471
self.last_checker_status = -1
1061
self.last_checker_signal = -returncode
1062
472
logger.warning("Checker for %(name)s crashed?",
1063
473
vars(self))
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."""
474
475
def checked_ok(self, timeout=None):
476
"""Bump up the timeout for this client.
477
478
This should only be called when the client has been seen,
479
alive and well.
480
"""
1075
481
if timeout is None:
1076
482
timeout = self.timeout
483
self.last_checked_ok = datetime.datetime.utcnow()
1077
484
if self.disable_initiator_tag is not None:
1078
GLib.source_remove(self.disable_initiator_tag)
1079
self.disable_initiator_tag = None
485
gobject.source_remove(self.disable_initiator_tag)
1080
486
if getattr(self, "enabled", False):
1081
self.disable_initiator_tag = GLib.timeout_add(
1082
int(timeout.total_seconds() * 1000), self.disable)
487
self.disable_initiator_tag = (gobject.timeout_add
488
(_timedelta_to_milliseconds
489
(timeout), self.disable))
1083
490
self.expires = datetime.datetime.utcnow() + timeout
1084
491
1085
492
def need_approval(self):
1086
493
self.last_approval_request = datetime.datetime.utcnow()
1087
494
1088
495
def start_checker(self):
1089
496
"""Start a new checker subprocess if one is not running.
1090
497
1091
498
If a checker already exists, leave it running and do
1092
499
nothing."""
1093
500
# The reason for not killing a running checker is that if we
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
501
# did that, then if a checker (for some reason) started
502
# running slowly and taking more than 'interval' time, the
503
# client would inevitably timeout, since no checker would get
504
# a chance to run to completion. If we instead leave running
1098
505
# checkers alone, the checker would have to take more time
1099
506
# than 'timeout' for the client to be disabled, which is as it
1100
507
# should be.
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
508
509
# If a checker exists, make sure it is not a zombie
510
try:
511
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
512
except (AttributeError, OSError) as error:
513
if (isinstance(error, OSError)
514
and error.errno != errno.ECHILD):
515
raise error
516
else:
517
if pid:
518
logger.warning("Checker was a zombie")
519
gobject.source_remove(self.checker_callback_tag)
520
self.checker_callback(pid, status,
521
self.current_checker_command)
1106
522
# Start a new checker if needed
1107
523
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}
1112
524
try:
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
525
# In case checker_command has exactly one % operator
526
command = self.checker_command % self.host
527
except TypeError:
528
# Escape attributes for the shell
529
escaped_attrs = dict(
530
(attr,
531
re.escape(unicode(str(getattr(self, attr, "")),
532
errors=
533
'replace')))
534
for attr in
535
self.runtime_expansions)
536
537
try:
538
command = self.checker_command % escaped_attrs
539
except TypeError as error:
540
logger.error('Could not format string "%s":'
541
' %s', self.checker_command, error)
542
return True # Try again later
1119
543
self.current_checker_command = command
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
544
try:
545
logger.info("Starting checker %r for %s",
546
command, self.name)
547
# We don't need to redirect stdout and stderr, since
548
# in normal mode, that is already done by daemon(),
549
# and in debug mode we don't want to. (Stdin is
550
# always replaced by /dev/null.)
551
self.checker = subprocess.Popen(command,
552
close_fds=True,
553
shell=True, cwd="/")
554
self.checker_callback_tag = (gobject.child_watch_add
555
(self.checker.pid,
556
self.checker_callback,
557
data=command))
558
# The checker may have completed before the gobject
559
# watch was added. Check for this.
560
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
561
if pid:
562
gobject.source_remove(self.checker_callback_tag)
563
self.checker_callback(pid, status, command)
564
except OSError as error:
565
logger.error("Failed to start subprocess: %s",
566
error)
567
# Re-run this periodically if run by gobject.timeout_add
1146
568
return True
1147
569
1148
570
def stop_checker(self):
1149
571
"""Force the checker process, if any, to stop."""
1150
572
if self.checker_callback_tag:
1151
GLib.source_remove(self.checker_callback_tag)
573
gobject.source_remove(self.checker_callback_tag)
1152
574
self.checker_callback_tag = None
1153
575
if getattr(self, "checker", None) is None:
1154
576
return
1155
577
logger.debug("Stopping checker for %(name)s", vars(self))
1156
self.checker.terminate()
578
try:
579
os.kill(self.checker.pid, signal.SIGTERM)
580
#time.sleep(0.5)
581
#if self.checker.poll() is None:
582
# os.kill(self.checker.pid, signal.SIGKILL)
583
except OSError as error:
584
if error.errno != errno.ESRCH: # No such process
585
raise
1157
586
self.checker = None
1158
587
1159
1160
def dbus_service_property(dbus_interface,
1161
signature="v",
1162
access="readwrite",
1163
byte_arrays=False):
588
# Encrypts a client secret and stores it in a varible encrypted_secret
589
def encrypt_secret(self, key):
590
# Encryption-key need to be specific size, so we hash inputed key
591
hasheng = hashlib.sha256()
592
hasheng.update(key)
593
encryptionkey = hasheng.digest()
594
595
# Create validation hash so we know at decryption if it was sucessful
596
hasheng = hashlib.sha256()
597
hasheng.update(self.secret)
598
validationhash = hasheng.digest()
599
600
# Encrypt secret
601
iv = os.urandom(Crypto.Cipher.AES.block_size)
602
ciphereng = Crypto.Cipher.AES.new(encryptionkey,
603
Crypto.Cipher.AES.MODE_CFB, iv)
604
ciphertext = ciphereng.encrypt(validationhash+self.secret)
605
self.encrypted_secret = (ciphertext, iv)
606
607
# Decrypt a encrypted client secret
608
def decrypt_secret(self, key):
609
# Decryption-key need to be specific size, so we hash inputed key
610
hasheng = hashlib.sha256()
611
hasheng.update(key)
612
encryptionkey = hasheng.digest()
613
614
# Decrypt encrypted secret
615
ciphertext, iv = self.encrypted_secret
616
ciphereng = Crypto.Cipher.AES.new(encryptionkey,
617
Crypto.Cipher.AES.MODE_CFB, iv)
618
plain = ciphereng.decrypt(ciphertext)
619
620
# Validate decrypted secret to know if it was succesful
621
hasheng = hashlib.sha256()
622
validationhash = plain[:hasheng.digest_size]
623
secret = plain[hasheng.digest_size:]
624
hasheng.update(secret)
625
626
# if validation fails, we use key as new secret. Otherwhise, we use
627
# the decrypted secret
628
if hasheng.digest() == validationhash:
629
self.secret = secret
630
else:
631
self.secret = key
632
del self.encrypted_secret
633
634
635
def dbus_service_property(dbus_interface, signature="v",
636
access="readwrite", byte_arrays=False):
1164
637
"""Decorators for marking methods of a DBusObjectWithProperties to
1165
638
become properties on the D-Bus.
1166
639
1167
640
The decorated method will be called with no arguments by "Get"
1168
641
and with one argument by "Set".
1169
642
1170
643
The parameters, where they are supported, are the same as
1171
644
dbus.service.method, except there is only "signature", since the
1172
645
type from Get() and the type sent to Set() is the same.
1175
648
# "Set" method, so we fail early here:
1176
649
if byte_arrays and signature != "ay":
1177
650
raise ValueError("Byte arrays not supported for non-'ay'"
1178
" signature {!r}".format(signature))
1179
651
" signature %r" % signature)
1180
652
def decorator(func):
1181
653
func._dbus_is_property = True
1182
654
func._dbus_interface = dbus_interface
1185
657
func._dbus_name = func.__name__
1186
658
if func._dbus_name.endswith("_dbus_property"):
1187
659
func._dbus_name = func._dbus_name[:-14]
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
660
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
661
return func
1234
662
return decorator
1235
663
1236
664
1237
665
class DBusPropertyException(dbus.exceptions.DBusException):
1238
666
"""A base class for D-Bus property-related exceptions
1239
667
"""
1240
pass
668
def __unicode__(self):
669
return unicode(str(self))
1241
670
1242
671
1243
672
class DBusPropertyAccessException(DBusPropertyException):
1252
681
pass
1253
682
1254
683
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):
684
class DBusObjectWithProperties(dbus.service.Object):
1345
685
"""A D-Bus object with properties.
1346
686
1347
687
Classes inheriting from this can use the dbus_service_property
1348
688
decorator to expose methods as D-Bus properties. It exposes the
1349
689
standard Get(), Set(), and GetAll() methods on the D-Bus.
1350
690
"""
1351
691
692
@staticmethod
693
def _is_dbus_property(obj):
694
return getattr(obj, "_dbus_is_property", False)
695
696
def _get_all_dbus_properties(self):
697
"""Returns a generator of (name, attribute) pairs
698
"""
699
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
700
for cls in self.__class__.__mro__
701
for name, prop in
702
inspect.getmembers(cls, self._is_dbus_property))
703
1352
704
def _get_dbus_property(self, interface_name, property_name):
1353
705
"""Returns a bound method if one exists which is a D-Bus
1354
706
property with the specified name and interface.
1355
707
"""
1356
for cls in self.__class__.__mro__:
1357
for name, value in inspect.getmembers(
1358
cls, self._is_dbus_thing("property")):
708
for cls in self.__class__.__mro__:
709
for name, value in (inspect.getmembers
710
(cls, self._is_dbus_property)):
1359
711
if (value._dbus_name == property_name
1360
712
and value._dbus_interface == interface_name):
1361
713
return value.__get__(self)
1362
714
1363
715
# No such property
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",
716
raise DBusPropertyNotFound(self.dbus_object_path + ":"
717
+ interface_name + "."
718
+ property_name)
719
720
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1378
721
out_signature="v")
1379
722
def Get(self, interface_name, property_name):
1380
723
"""Standard D-Bus property Get() method, see D-Bus standard.
1386
729
if not hasattr(value, "variant_level"):
1387
730
return value
1388
731
return type(value)(value, variant_level=value.variant_level+1)
1389
732
1390
733
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
1391
734
def Set(self, interface_name, property_name, value):
1392
735
"""Standard D-Bus property Set() method, see D-Bus standard.
1398
741
# The byte_arrays option is not supported yet on
1399
742
# signatures other than "ay".
1400
743
if prop._dbus_signature != "ay":
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))
744
raise ValueError
745
value = dbus.ByteArray(''.join(unichr(byte)
746
for byte in value))
1406
747
prop(value)
1407
1408
@dbus.service.method(dbus.PROPERTIES_IFACE,
1409
in_signature="s",
748
749
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1410
750
out_signature="a{sv}")
1411
751
def GetAll(self, interface_name):
1412
752
"""Standard D-Bus property GetAll() method, see D-Bus
1413
753
standard.
1414
754
1415
755
Note: Will not include properties with access="write".
1416
756
"""
1417
properties = {}
1418
for name, prop in self._get_all_dbus_things("property"):
757
all = {}
758
for name, prop in self._get_all_dbus_properties():
1419
759
if (interface_name
1420
760
and interface_name != prop._dbus_interface):
1421
761
# Interface non-empty but did not match
1425
765
continue
1426
766
value = prop()
1427
767
if not hasattr(value, "variant_level"):
1428
properties[name] = value
768
all[name] = value
1429
769
continue
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
770
all[name] = type(value)(value, variant_level=
771
value.variant_level+1)
772
return dbus.Dictionary(all, signature="sv")
773
1442
774
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1443
775
out_signature="s",
1444
776
path_keyword='object_path',
1445
777
connection_keyword='connection')
1446
778
def Introspect(self, object_path, connection):
1447
"""Overloading of standard D-Bus method.
1448
1449
Inserts property tags and interface annotation tags.
779
"""Standard D-Bus method, overloaded to insert property tags.
1450
780
"""
1451
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1452
object_path,
1453
connection)
781
xmlstring = dbus.service.Object.Introspect(self, object_path,
782
connection)
1454
783
try:
1455
784
document = xml.dom.minidom.parseString(xmlstring)
1456
1457
785
def make_tag(document, name, prop):
1458
786
e = document.createElement("property")
1459
787
e.setAttribute("name", name)
1460
788
e.setAttribute("type", prop._dbus_signature)
1461
789
e.setAttribute("access", prop._dbus_access)
1462
790
return e
1463
1464
791
for if_tag in document.getElementsByTagName("interface"):
1465
# Add property tags
1466
792
for tag in (make_tag(document, name, prop)
1467
793
for name, prop
1468
in self._get_all_dbus_things("property")
794
in self._get_all_dbus_properties()
1469
795
if prop._dbus_interface
1470
796
== if_tag.getAttribute("name")):
1471
797
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)
1488
798
# Add the names to the return values for the
1489
799
# "org.freedesktop.DBus.Properties" methods
1490
800
if (if_tag.getAttribute("name")
1505
815
except (AttributeError, xml.dom.DOMException,
1506
816
xml.parsers.expat.ExpatError) as error:
1507
817
logger.error("Failed to override Introspection method",
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):
818
error)
819
return xmlstring
820
821
822
def datetime_to_dbus (dt, variant_level=0):
1584
823
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1585
824
if dt is None:
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).
825
return dbus.String("", variant_level = variant_level)
826
return dbus.String(dt.isoformat(),
827
variant_level=variant_level)
828
829
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
830
.__metaclass__):
831
"""Applied to an empty subclass of a D-Bus object, this metaclass
832
will add additional D-Bus attributes matching a certain pattern.
1612
833
"""
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):
834
def __new__(mcs, name, bases, attr):
835
# Go through all the base classes which could have D-Bus
836
# methods, signals, or properties in them
837
for base in (b for b in bases
838
if issubclass(b, dbus.service.Object)):
839
# Go though all attributes of the base class
840
for attrname, attribute in inspect.getmembers(base):
1621
841
# Ignore non-D-Bus attributes, and D-Bus attributes
1622
842
# with the wrong interface name
1623
843
if (not hasattr(attribute, "_dbus_interface")
1624
or not attribute._dbus_interface.startswith(
1625
orig_interface_name)):
844
or not attribute._dbus_interface
845
.startswith("se.recompile.Mandos")):
1626
846
continue
1627
847
# Create an alternate D-Bus interface name based on
1628
848
# the current name
1629
alt_interface = attribute._dbus_interface.replace(
1630
orig_interface_name, alt_interface_name)
1631
interface_names.add(alt_interface)
849
alt_interface = (attribute._dbus_interface
850
.replace("se.recompile.Mandos",
851
"se.bsnet.fukt.Mandos"))
1632
852
# Is this a D-Bus signal?
1633
853
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(
854
# Extract the original non-method function by
855
# black magic
856
nonmethod_func = (dict(
1638
857
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)
858
attribute.__closure__))["func"]
859
.cell_contents)
1646
860
# Create a new, but exactly alike, function
1647
861
# object, and decorate it to be a new D-Bus signal
1648
862
# 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
863
new_function = (dbus.service.signal
864
(alt_interface,
865
attribute._dbus_signature)
866
(types.FunctionType(
867
nonmethod_func.func_code,
868
nonmethod_func.func_globals,
869
nonmethod_func.func_name,
870
nonmethod_func.func_defaults,
871
nonmethod_func.func_closure)))
1660
872
# 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
873
# old and new functions, so both the old and new
874
# signals gets sent when the function is called
1664
875
def fixscope(func1, func2):
1665
876
"""This function is a scope container to pass
1666
877
func1 and func2 to the "call_both" function
1667
878
outside of its arguments"""
1668
1669
@functools.wraps(func2)
1670
879
def call_both(*args, **kwargs):
1671
880
"""This function will emit two D-Bus
1672
881
signals by calling func1 and func2"""
1673
882
func1(*args, **kwargs)
1674
883
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
884
return call_both
1682
885
# Create the "call_both" function and add it to
1683
886
# the class
1684
attr[attrname] = fixscope(attribute, new_function)
887
attr[attrname] = fixscope(attribute,
888
new_function)
1685
889
# Is this a D-Bus method?
1686
890
elif getattr(attribute, "_dbus_is_method", False):
1687
891
# Create a new, but exactly alike, function
1688
892
# object. Decorate it to be a new D-Bus method
1689
893
# with the alternate D-Bus interface name. Add it
1690
894
# 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
895
attr[attrname] = (dbus.service.method
896
(alt_interface,
897
attribute._dbus_in_signature,
898
attribute._dbus_out_signature)
899
(types.FunctionType
900
(attribute.func_code,
901
attribute.func_globals,
902
attribute.func_name,
903
attribute.func_defaults,
904
attribute.func_closure)))
1703
905
# Is this a D-Bus property?
1704
906
elif getattr(attribute, "_dbus_is_property", False):
1705
907
# Create a new, but exactly alike, function
1706
908
# object, and decorate it to be a new D-Bus
1707
909
# property with the alternate D-Bus interface
1708
910
# 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"})
911
attr[attrname] = (dbus_service_property
912
(alt_interface,
913
attribute._dbus_signature,
914
attribute._dbus_access,
915
attribute
916
._dbus_get_args_options
917
["byte_arrays"])
918
(types.FunctionType
919
(attribute.func_code,
920
attribute.func_globals,
921
attribute.func_name,
922
attribute.func_defaults,
923
attribute.func_closure)))
924
return type.__new__(mcs, name, bases, attr)
925
1761
926
class ClientDBus(Client, DBusObjectWithProperties):
1762
927
"""A Client class using D-Bus
1763
928
1764
929
Attributes:
1765
930
dbus_object_path: dbus.ObjectPath
1766
931
bus: dbus.SystemBus()
1767
932
"""
1768
933
1769
934
runtime_expansions = (Client.runtime_expansions
1770
+ ("dbus_object_path", ))
1771
1772
_interface = "se.recompile.Mandos.Client"
1773
935
+ ("dbus_object_path",))
936
1774
937
# dbus.service.Object doesn't use super(), so we can't either.
1775
1776
def __init__(self, bus=None, *args, **kwargs):
938
939
def __init__(self, bus = None, *args, **kwargs):
1777
940
self.bus = bus
1778
941
Client.__init__(self, *args, **kwargs)
942
943
self._approvals_pending = 0
1779
944
# Only now, when this client is initialized, can it show up on
1780
945
# the D-Bus
1781
client_object_name = str(self.name).translate(
946
client_object_name = unicode(self.name).translate(
1782
947
{ord("."): ord("_"),
1783
948
ord("-"): ord("_")})
1784
self.dbus_object_path = dbus.ObjectPath(
1785
"/clients/" + client_object_name)
949
self.dbus_object_path = (dbus.ObjectPath
950
("/clients/" + client_object_name))
1786
951
DBusObjectWithProperties.__init__(self, self.bus,
1787
952
self.dbus_object_path)
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):
953
954
def notifychangeproperty(transform_func,
955
dbus_name, type_func=lambda x: x,
956
variant_level=1):
1794
957
""" Modify a variable so that it's a property which announces
1795
958
its changes to DBus.
1796
959
1801
964
to the D-Bus. Default: no transform
1802
965
variant_level: D-Bus variant level. Default: 1
1803
966
"""
1804
attrname = "_{}".format(dbus_name)
1805
967
attrname = "_{0}".format(dbus_name)
1806
968
def setter(self, value):
1807
969
if hasattr(self, "dbus_object_path"):
1808
970
if (not hasattr(self, attrname) or
1809
971
type_func(getattr(self, attrname, None))
1810
972
!= 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())
973
dbus_value = transform_func(type_func(value),
974
variant_level
975
=variant_level)
976
self.PropertyChanged(dbus.String(dbus_name),
977
dbus_value)
1826
978
setattr(self, attrname, value)
1827
979
1828
980
return property(lambda self: getattr(self, attrname), setter)
1829
981
982
1830
983
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1831
984
approvals_pending = notifychangeproperty(dbus.Boolean,
1832
985
"ApprovalPending",
1833
type_func=bool)
986
type_func = bool)
1834
987
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1835
988
last_enabled = notifychangeproperty(datetime_to_dbus,
1836
989
"LastEnabled")
1837
checker = notifychangeproperty(
1838
dbus.Boolean, "CheckerRunning",
1839
type_func=lambda checker: checker is not None)
990
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
991
type_func = lambda checker:
992
checker is not None)
1840
993
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1841
994
"LastCheckedOK")
1842
last_checker_status = notifychangeproperty(dbus.Int16,
1843
"LastCheckerStatus")
1844
995
last_approval_request = notifychangeproperty(
1845
996
datetime_to_dbus, "LastApprovalRequest")
1846
997
approved_by_default = notifychangeproperty(dbus.Boolean,
1847
998
"ApprovedByDefault")
1848
approval_delay = notifychangeproperty(
1849
dbus.UInt64, "ApprovalDelay",
1850
type_func=lambda td: td.total_seconds() * 1000)
999
approval_delay = notifychangeproperty(dbus.UInt16,
1000
"ApprovalDelay",
1001
type_func =
1002
_timedelta_to_milliseconds)
1851
1003
approval_duration = notifychangeproperty(
1852
dbus.UInt64, "ApprovalDuration",
1853
type_func=lambda td: td.total_seconds() * 1000)
1004
dbus.UInt16, "ApprovalDuration",
1005
type_func = _timedelta_to_milliseconds)
1854
1006
host = notifychangeproperty(dbus.String, "Host")
1855
timeout = notifychangeproperty(
1856
dbus.UInt64, "Timeout",
1857
type_func=lambda td: td.total_seconds() * 1000)
1007
timeout = notifychangeproperty(dbus.UInt16, "Timeout",
1008
type_func =
1009
_timedelta_to_milliseconds)
1858
1010
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)
1011
dbus.UInt16, "ExtendedTimeout",
1012
type_func = _timedelta_to_milliseconds)
1013
interval = notifychangeproperty(dbus.UInt16,
1014
"Interval",
1015
type_func =
1016
_timedelta_to_milliseconds)
1864
1017
checker_command = notifychangeproperty(dbus.String, "Checker")
1865
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1866
invalidate_only=True)
1867
1018
1868
1019
del notifychangeproperty
1869
1020
1870
1021
def __del__(self, *args, **kwargs):
1871
1022
try:
1872
1023
self.remove_from_connection()
1875
1026
if hasattr(DBusObjectWithProperties, "__del__"):
1876
1027
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1877
1028
Client.__del__(self, *args, **kwargs)
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:
1029
1030
def checker_callback(self, pid, condition, command,
1031
*args, **kwargs):
1032
self.checker_callback_tag = None
1033
self.checker = None
1034
if os.WIFEXITED(condition):
1035
exitstatus = os.WEXITSTATUS(condition)
1886
1036
# Emit D-Bus signal
1887
1037
self.CheckerCompleted(dbus.Int16(exitstatus),
1888
# This is specific to GNU libC
1889
dbus.Int64(exitstatus << 8),
1038
dbus.Int64(condition),
1890
1039
dbus.String(command))
1891
1040
else:
1892
1041
# Emit D-Bus signal
1893
1042
self.CheckerCompleted(dbus.Int16(-1),
1894
dbus.Int64(
1895
# This is specific to GNU libC
1896
(exitstatus << 8)
1897
| self.last_checker_signal),
1043
dbus.Int64(condition),
1898
1044
dbus.String(command))
1899
return ret
1900
1045
1046
return Client.checker_callback(self, pid, condition, command,
1047
*args, **kwargs)
1048
1901
1049
def start_checker(self, *args, **kwargs):
1902
old_checker_pid = getattr(self.checker, "pid", None)
1050
old_checker = self.checker
1051
if self.checker is not None:
1052
old_checker_pid = self.checker.pid
1053
else:
1054
old_checker_pid = None
1903
1055
r = Client.start_checker(self, *args, **kwargs)
1904
1056
# Only if new checker process was started
1905
1057
if (self.checker is not None
1907
1059
# Emit D-Bus signal
1908
1060
self.CheckerStarted(self.current_checker_command)
1909
1061
return r
1910
1062
1911
1063
def _reset_approved(self):
1912
self.approved = None
1064
self._approved = None
1913
1065
return False
1914
1066
1915
1067
def approve(self, value=True):
1916
self.approved = value
1917
GLib.timeout_add(int(self.approval_duration.total_seconds()
1918
* 1000), self._reset_approved)
1919
1068
self.send_changedstate()
1920
1921
# D-Bus methods, signals & properties
1922
1923
# Interfaces
1924
1925
# Signals
1926
1069
self._approved = value
1070
gobject.timeout_add(_timedelta_to_milliseconds
1071
(self.approval_duration),
1072
self._reset_approved)
1073
1074
1075
## D-Bus methods, signals & properties
1076
_interface = "se.recompile.Mandos.Client"
1077
1078
## Signals
1079
1927
1080
# CheckerCompleted - signal
1928
1081
@dbus.service.signal(_interface, signature="nxs")
1929
1082
def CheckerCompleted(self, exitcode, waitstatus, command):
1930
1083
"D-Bus signal"
1931
1084
pass
1932
1085
1933
1086
# CheckerStarted - signal
1934
1087
@dbus.service.signal(_interface, signature="s")
1935
1088
def CheckerStarted(self, command):
1936
1089
"D-Bus signal"
1937
1090
pass
1938
1091
1939
1092
# PropertyChanged - signal
1940
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1941
1093
@dbus.service.signal(_interface, signature="sv")
1942
1094
def PropertyChanged(self, property, value):
1943
1095
"D-Bus signal"
1944
1096
pass
1945
1097
1946
1098
# GotSecret - signal
1947
1099
@dbus.service.signal(_interface)
1948
1100
def GotSecret(self):
1951
1103
server to mandos-client
1952
1104
"""
1953
1105
pass
1954
1106
1955
1107
# Rejected - signal
1956
1108
@dbus.service.signal(_interface, signature="s")
1957
1109
def Rejected(self, reason):
1958
1110
"D-Bus signal"
1959
1111
pass
1960
1112
1961
1113
# NeedApproval - signal
1962
1114
@dbus.service.signal(_interface, signature="tb")
1963
1115
def NeedApproval(self, timeout, default):
1964
1116
"D-Bus signal"
1965
1117
return self.need_approval()
1966
1967
# Methods
1968
1118
1119
## Methods
1120
1969
1121
# Approve - method
1970
1122
@dbus.service.method(_interface, in_signature="b")
1971
1123
def Approve(self, value):
1972
1124
self.approve(value)
1973
1125
1974
1126
# CheckedOK - method
1975
1127
@dbus.service.method(_interface)
1976
1128
def CheckedOK(self):
1977
1129
self.checked_ok()
1978
1130
1979
1131
# Enable - method
1980
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1981
1132
@dbus.service.method(_interface)
1982
1133
def Enable(self):
1983
1134
"D-Bus method"
1984
1135
self.enable()
1985
1136
1986
1137
# StartChecker - method
1987
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1988
1138
@dbus.service.method(_interface)
1989
1139
def StartChecker(self):
1990
1140
"D-Bus method"
1991
1141
self.start_checker()
1992
1142
1993
1143
# Disable - method
1994
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1995
1144
@dbus.service.method(_interface)
1996
1145
def Disable(self):
1997
1146
"D-Bus method"
1998
1147
self.disable()
1999
1148
2000
1149
# StopChecker - method
2001
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2002
1150
@dbus.service.method(_interface)
2003
1151
def StopChecker(self):
2004
1152
self.stop_checker()
2005
2006
# Properties
2007
1153
1154
## Properties
1155
2008
1156
# ApprovalPending - property
2009
1157
@dbus_service_property(_interface, signature="b", access="read")
2010
1158
def ApprovalPending_dbus_property(self):
2011
1159
return dbus.Boolean(bool(self.approvals_pending))
2012
1160
2013
1161
# ApprovedByDefault - property
2014
@dbus_service_property(_interface,
2015
signature="b",
1162
@dbus_service_property(_interface, signature="b",
2016
1163
access="readwrite")
2017
1164
def ApprovedByDefault_dbus_property(self, value=None):
2018
1165
if value is None: # get
2019
1166
return dbus.Boolean(self.approved_by_default)
2020
1167
self.approved_by_default = bool(value)
2021
1168
2022
1169
# ApprovalDelay - property
2023
@dbus_service_property(_interface,
2024
signature="t",
1170
@dbus_service_property(_interface, signature="t",
2025
1171
access="readwrite")
2026
1172
def ApprovalDelay_dbus_property(self, value=None):
2027
1173
if value is None: # get
2028
return dbus.UInt64(self.approval_delay.total_seconds()
2029
* 1000)
1174
return dbus.UInt64(self.approval_delay_milliseconds())
2030
1175
self.approval_delay = datetime.timedelta(0, 0, 0, value)
2031
1176
2032
1177
# ApprovalDuration - property
2033
@dbus_service_property(_interface,
2034
signature="t",
1178
@dbus_service_property(_interface, signature="t",
2035
1179
access="readwrite")
2036
1180
def ApprovalDuration_dbus_property(self, value=None):
2037
1181
if value is None: # get
2038
return dbus.UInt64(self.approval_duration.total_seconds()
2039
* 1000)
1182
return dbus.UInt64(_timedelta_to_milliseconds(
1183
self.approval_duration))
2040
1184
self.approval_duration = datetime.timedelta(0, 0, 0, value)
2041
1185
2042
1186
# Name - property
2043
@dbus_annotations(
2044
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2045
1187
@dbus_service_property(_interface, signature="s", access="read")
2046
1188
def Name_dbus_property(self):
2047
1189
return dbus.String(self.name)
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
1190
2056
1191
# Fingerprint - property
2057
@dbus_annotations(
2058
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2059
1192
@dbus_service_property(_interface, signature="s", access="read")
2060
1193
def Fingerprint_dbus_property(self):
2061
1194
return dbus.String(self.fingerprint)
2062
1195
2063
1196
# Host - property
2064
@dbus_service_property(_interface,
2065
signature="s",
1197
@dbus_service_property(_interface, signature="s",
2066
1198
access="readwrite")
2067
1199
def Host_dbus_property(self, value=None):
2068
1200
if value is None: # get
2069
1201
return dbus.String(self.host)
2070
self.host = str(value)
2071
1202
self.host = value
1203
2072
1204
# Created - property
2073
@dbus_annotations(
2074
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2075
1205
@dbus_service_property(_interface, signature="s", access="read")
2076
1206
def Created_dbus_property(self):
2077
return datetime_to_dbus(self.created)
2078
1207
return dbus.String(datetime_to_dbus(self.created))
1208
2079
1209
# LastEnabled - property
2080
1210
@dbus_service_property(_interface, signature="s", access="read")
2081
1211
def LastEnabled_dbus_property(self):
2082
1212
return datetime_to_dbus(self.last_enabled)
2083
1213
2084
1214
# Enabled - property
2085
@dbus_service_property(_interface,
2086
signature="b",
1215
@dbus_service_property(_interface, signature="b",
2087
1216
access="readwrite")
2088
1217
def Enabled_dbus_property(self, value=None):
2089
1218
if value is None: # get
2092
1221
self.enable()
2093
1222
else:
2094
1223
self.disable()
2095
1224
2096
1225
# LastCheckedOK - property
2097
@dbus_service_property(_interface,
2098
signature="s",
1226
@dbus_service_property(_interface, signature="s",
2099
1227
access="readwrite")
2100
1228
def LastCheckedOK_dbus_property(self, value=None):
2101
1229
if value is not None:
2102
1230
self.checked_ok()
2103
1231
return
2104
1232
return datetime_to_dbus(self.last_checked_ok)
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
1233
2111
1234
# Expires - property
2112
1235
@dbus_service_property(_interface, signature="s", access="read")
2113
1236
def Expires_dbus_property(self):
2114
1237
return datetime_to_dbus(self.expires)
2115
1238
2116
1239
# LastApprovalRequest - property
2117
1240
@dbus_service_property(_interface, signature="s", access="read")
2118
1241
def LastApprovalRequest_dbus_property(self):
2119
1242
return datetime_to_dbus(self.last_approval_request)
2120
1243
2121
1244
# Timeout - property
2122
@dbus_service_property(_interface,
2123
signature="t",
1245
@dbus_service_property(_interface, signature="t",
2124
1246
access="readwrite")
2125
1247
def Timeout_dbus_property(self, value=None):
2126
1248
if value is None: # get
2127
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2128
old_timeout = self.timeout
1249
return dbus.UInt64(self.timeout_milliseconds())
2129
1250
self.timeout = datetime.timedelta(0, 0, 0, value)
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
1251
if getattr(self, "disable_initiator_tag", None) is None:
1252
return
1253
# Reschedule timeout
1254
gobject.source_remove(self.disable_initiator_tag)
1255
self.disable_initiator_tag = None
1256
self.expires = None
1257
time_to_die = _timedelta_to_milliseconds((self
1258
.last_checked_ok
1259
+ self.timeout)
1260
- datetime.datetime
1261
.utcnow())
1262
if time_to_die <= 0:
1263
# The timeout has passed
1264
self.disable()
1265
else:
1266
self.expires = (datetime.datetime.utcnow()
1267
+ datetime.timedelta(milliseconds =
1268
time_to_die))
1269
self.disable_initiator_tag = (gobject.timeout_add
1270
(time_to_die, self.disable))
1271
2146
1272
# ExtendedTimeout - property
2147
@dbus_service_property(_interface,
2148
signature="t",
1273
@dbus_service_property(_interface, signature="t",
2149
1274
access="readwrite")
2150
1275
def ExtendedTimeout_dbus_property(self, value=None):
2151
1276
if value is None: # get
2152
return dbus.UInt64(self.extended_timeout.total_seconds()
2153
* 1000)
1277
return dbus.UInt64(self.extended_timeout_milliseconds())
2154
1278
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2155
1279
2156
1280
# Interval - property
2157
@dbus_service_property(_interface,
2158
signature="t",
1281
@dbus_service_property(_interface, signature="t",
2159
1282
access="readwrite")
2160
1283
def Interval_dbus_property(self, value=None):
2161
1284
if value is None: # get
2162
return dbus.UInt64(self.interval.total_seconds() * 1000)
1285
return dbus.UInt64(self.interval_milliseconds())
2163
1286
self.interval = datetime.timedelta(0, 0, 0, value)
2164
1287
if getattr(self, "checker_initiator_tag", None) is None:
2165
1288
return
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
1289
# Reschedule checker run
1290
gobject.source_remove(self.checker_initiator_tag)
1291
self.checker_initiator_tag = (gobject.timeout_add
1292
(value, self.start_checker))
1293
self.start_checker() # Start one now, too
1294
2173
1295
# Checker - property
2174
@dbus_service_property(_interface,
2175
signature="s",
1296
@dbus_service_property(_interface, signature="s",
2176
1297
access="readwrite")
2177
1298
def Checker_dbus_property(self, value=None):
2178
1299
if value is None: # get
2179
1300
return dbus.String(self.checker_command)
2180
self.checker_command = str(value)
2181
1301
self.checker_command = value
1302
2182
1303
# CheckerRunning - property
2183
@dbus_service_property(_interface,
2184
signature="b",
1304
@dbus_service_property(_interface, signature="b",
2185
1305
access="readwrite")
2186
1306
def CheckerRunning_dbus_property(self, value=None):
2187
1307
if value is None: # get
2190
1310
self.start_checker()
2191
1311
else:
2192
1312
self.stop_checker()
2193
1313
2194
1314
# ObjectPath - property
2195
@dbus_annotations(
2196
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2197
"org.freedesktop.DBus.Deprecated": "true"})
2198
1315
@dbus_service_property(_interface, signature="o", access="read")
2199
1316
def ObjectPath_dbus_property(self):
2200
return self.dbus_object_path # is already a dbus.ObjectPath
2201
1317
return self.dbus_object_path # is already a dbus.ObjectPath
1318
2202
1319
# Secret = property
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)
1320
@dbus_service_property(_interface, signature="ay",
1321
access="write", byte_arrays=True)
2210
1322
def Secret_dbus_property(self, value):
2211
self.secret = bytes(value)
2212
1323
self.secret = str(value)
1324
2213
1325
del _interface
2214
1326
2215
1327
2216
1328
class ProxyClient(object):
2217
def __init__(self, child_pipe, key_id, fpr, address):
1329
def __init__(self, child_pipe, fpr, address):
2218
1330
self._pipe = child_pipe
2219
self._pipe.send(('init', key_id, fpr, address))
1331
self._pipe.send(('init', fpr, address))
2220
1332
if not self._pipe.recv():
2221
raise KeyError(key_id or fpr)
2222
1333
raise KeyError()
1334
2223
1335
def __getattribute__(self, name):
2224
if name == '_pipe':
1336
if(name == '_pipe'):
2225
1337
return super(ProxyClient, self).__getattribute__(name)
2226
1338
self._pipe.send(('getattr', name))
2227
1339
data = self._pipe.recv()
2228
1340
if data[0] == 'data':
2229
1341
return data[1]
2230
1342
if data[0] == 'function':
2231
2232
1343
def func(*args, **kwargs):
2233
1344
self._pipe.send(('funcall', name, args, kwargs))
2234
1345
return self._pipe.recv()[1]
2235
2236
1346
return func
2237
1347
2238
1348
def __setattr__(self, name, value):
2239
if name == '_pipe':
1349
if(name == '_pipe'):
2240
1350
return super(ProxyClient, self).__setattr__(name, value)
2241
1351
self._pipe.send(('setattr', name, value))
2242
1352
1353
class ClientDBusTransitional(ClientDBus):
1354
__metaclass__ = AlternateDBusNamesMetaclass
2243
1355
2244
1356
class ClientHandler(socketserver.BaseRequestHandler, object):
2245
1357
"""A class to handle client connections.
2246
1358
2247
1359
Instantiated once for each connection to handle it.
2248
1360
Note: This will run in its own forked process."""
2249
1361
2250
1362
def handle(self):
2251
1363
with contextlib.closing(self.server.child_pipe) as child_pipe:
2252
1364
logger.info("TCP connection from: %s",
2253
str(self.client_address))
1365
unicode(self.client_address))
2254
1366
logger.debug("Pipe FD: %d",
2255
1367
self.server.child_pipe.fileno())
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"))
1368
1369
session = (gnutls.connection
1370
.ClientSession(self.request,
1371
gnutls.connection
1372
.X509Credentials()))
1373
1374
# Note: gnutls.connection.X509Credentials is really a
1375
# generic GnuTLS certificate credentials object so long as
1376
# no X.509 keys are added to it. Therefore, we can use it
1377
# here despite using OpenPGP certificates.
1378
1379
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1380
# "+AES-256-CBC", "+SHA1",
1381
# "+COMP-NULL", "+CTYPE-OPENPGP",
1382
# "+DHE-DSS"))
2263
1383
# Use a fallback default, since this MUST be set.
2264
1384
priority = self.server.gnutls_priority
2265
1385
if priority is None:
2266
1386
priority = "NORMAL"
2267
gnutls.priority_set_direct(session._c_object,
2268
priority.encode("utf-8"),
2269
None)
2270
1387
(gnutls.library.functions
1388
.gnutls_priority_set_direct(session._c_object,
1389
priority, None))
1390
2271
1391
# Start communication using the Mandos protocol
2272
1392
# Get protocol number
2273
1393
line = self.request.makefile().readline()
2274
1394
logger.debug("Protocol version: %r", line)
2275
1395
try:
2276
1396
if int(line.strip().split()[0]) > 1:
2277
raise RuntimeError(line)
1397
raise RuntimeError
2278
1398
except (ValueError, IndexError, RuntimeError) as error:
2279
1399
logger.error("Unknown protocol version: %s", error)
2280
1400
return
2281
1401
2282
1402
# Start GnuTLS connection
2283
1403
try:
2284
1404
session.handshake()
2285
except gnutls.Error as error:
1405
except gnutls.errors.GNUTLSError as error:
2286
1406
logger.warning("Handshake failed: %s", error)
2287
1407
# Do not run session.bye() here: the session is not
2288
1408
# established. Just abandon the request.
2289
1409
return
2290
1410
logger.debug("Handshake succeeded")
2291
1411
2292
1412
approval_required = False
2293
1413
try:
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,
1414
try:
1415
fpr = self.fingerprint(self.peer_certificate
1416
(session))
1417
except (TypeError,
1418
gnutls.errors.GNUTLSError) as error:
1419
logger.warning("Bad certificate: %s", error)
1420
return
1421
logger.debug("Fingerprint: %s", fpr)
1422
1423
try:
1424
client = ProxyClient(child_pipe, fpr,
2316
1425
self.client_address)
2317
1426
except KeyError:
2318
1427
return
2319
1428
2320
1429
if client.approval_delay:
2321
1430
delay = client.approval_delay
2322
1431
client.approvals_pending += 1
2323
1432
approval_required = True
2324
1433
2325
1434
while True:
2326
1435
if not client.enabled:
2327
1436
logger.info("Client %s is disabled",
2328
client.name)
1437
client.name)
2329
1438
if self.server.use_dbus:
2330
1439
# Emit D-Bus signal
2331
1440
client.Rejected("Disabled")
2332
1441
return
2333
2334
if client.approved or not client.approval_delay:
2335
# We are approved or approval is disabled
1442
1443
if client._approved or not client.approval_delay:
1444
#We are approved or approval is disabled
2336
1445
break
2337
elif client.approved is None:
1446
elif client._approved is None:
2338
1447
logger.info("Client %s needs approval",
2339
1448
client.name)
2340
1449
if self.server.use_dbus:
2341
1450
# Emit D-Bus signal
2342
1451
client.NeedApproval(
2343
client.approval_delay.total_seconds()
2344
* 1000, client.approved_by_default)
1452
client.approval_delay_milliseconds(),
1453
client.approved_by_default)
2345
1454
else:
2346
1455
logger.warning("Client %s was not approved",
2347
1456
client.name)
2349
1458
# Emit D-Bus signal
2350
1459
client.Rejected("Denied")
2351
1460
return
2352
2353
# wait until timeout or approved
1461
1462
#wait until timeout or approved
2354
1463
time = datetime.datetime.now()
2355
1464
client.changedstate.acquire()
2356
client.changedstate.wait(delay.total_seconds())
1465
(client.changedstate.wait
1466
(float(client._timedelta_to_milliseconds(delay)
1467
/ 1000)))
2357
1468
client.changedstate.release()
2358
1469
time2 = datetime.datetime.now()
2359
1470
if (time2 - time) >= delay:
2369
1480
break
2370
1481
else:
2371
1482
delay -= time2 - time
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
1483
1484
sent_size = 0
1485
while sent_size < len(client.secret):
1486
try:
1487
sent = session.send(client.secret[sent_size:])
1488
except gnutls.errors.GNUTLSError as error:
1489
logger.warning("gnutls send failed")
1490
return
1491
logger.debug("Sent: %d, remaining: %d",
1492
sent, len(client.secret)
1493
- (sent_size + sent))
1494
sent_size += sent
1495
2380
1496
logger.info("Sending secret to %s", client.name)
2381
1497
# bump the timeout using extended_timeout
2382
client.bump_timeout(client.extended_timeout)
1498
client.checked_ok(client.extended_timeout)
2383
1499
if self.server.use_dbus:
2384
1500
# Emit D-Bus signal
2385
1501
client.GotSecret()
2386
1502
2387
1503
finally:
2388
1504
if approval_required:
2389
1505
client.approvals_pending -= 1
2390
1506
try:
2391
1507
session.bye()
2392
except gnutls.Error as error:
2393
logger.warning("GnuTLS bye failed",
2394
exc_info=error)
2395
1508
except gnutls.errors.GNUTLSError as error:
1509
logger.warning("GnuTLS bye failed")
1510
2396
1511
@staticmethod
2397
1512
def peer_certificate(session):
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""
1513
"Return the peer's OpenPGP certificate as a bytestring"
1514
# If not an OpenPGP certificate...
1515
if (gnutls.library.functions
1516
.gnutls_certificate_type_get(session._c_object)
1517
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1518
# ...do the normal thing
1519
return session.peer_certificate
2414
1520
list_size = ctypes.c_uint(1)
2415
cert_list = (gnutls.certificate_get_peers
1521
cert_list = (gnutls.library.functions
1522
.gnutls_certificate_get_peers
2416
1523
(session._c_object, ctypes.byref(list_size)))
2417
1524
if not bool(cert_list) and list_size.value != 0:
2418
raise gnutls.Error("error getting peer certificate")
1525
raise gnutls.errors.GNUTLSError("error getting peer"
1526
" certificate")
2419
1527
if list_size.value == 0:
2420
1528
return None
2421
1529
cert = cert_list[0]
2422
1530
return ctypes.string_at(cert.data, cert.size)
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
1531
2458
1532
@staticmethod
2459
1533
def fingerprint(openpgp):
2460
1534
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2461
1535
# New GnuTLS "datum" with the OpenPGP public key
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)))
1536
datum = (gnutls.library.types
1537
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1538
ctypes.POINTER
1539
(ctypes.c_ubyte)),
1540
ctypes.c_uint(len(openpgp))))
2466
1541
# New empty GnuTLS certificate
2467
crt = gnutls.openpgp_crt_t()
2468
gnutls.openpgp_crt_init(ctypes.byref(crt))
1542
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1543
(gnutls.library.functions
1544
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2469
1545
# Import the OpenPGP public key into the certificate
2470
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2471
gnutls.OPENPGP_FMT_RAW)
1546
(gnutls.library.functions
1547
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1548
gnutls.library.constants
1549
.GNUTLS_OPENPGP_FMT_RAW))
2472
1550
# Verify the self signature in the key
2473
1551
crtverify = ctypes.c_uint()
2474
gnutls.openpgp_crt_verify_self(crt, 0,
2475
ctypes.byref(crtverify))
1552
(gnutls.library.functions
1553
.gnutls_openpgp_crt_verify_self(crt, 0,
1554
ctypes.byref(crtverify)))
2476
1555
if crtverify.value != 0:
2477
gnutls.openpgp_crt_deinit(crt)
2478
raise gnutls.CertificateSecurityError(code
2479
=crtverify.value)
1556
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1557
raise (gnutls.errors.CertificateSecurityError
1558
("Verify failed"))
2480
1559
# New buffer for the fingerprint
2481
1560
buf = ctypes.create_string_buffer(20)
2482
1561
buf_len = ctypes.c_size_t()
2483
1562
# Get the fingerprint from the certificate into the buffer
2484
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2485
ctypes.byref(buf_len))
1563
(gnutls.library.functions
1564
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1565
ctypes.byref(buf_len)))
2486
1566
# Deinit the certificate
2487
gnutls.openpgp_crt_deinit(crt)
1567
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2488
1568
# Convert the buffer to a Python bytestring
2489
1569
fpr = ctypes.string_at(buf, buf_len.value)
2490
1570
# Convert the bytestring to hexadecimal notation
2491
hex_fpr = binascii.hexlify(fpr).upper()
1571
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
2492
1572
return hex_fpr
2493
1573
2494
1574
2495
1575
class MultiprocessingMixIn(object):
2496
1576
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2497
2498
1577
def sub_process_main(self, request, address):
2499
1578
try:
2500
1579
self.finish_request(request, address)
2501
except Exception:
1580
except:
2502
1581
self.handle_error(request, address)
2503
1582
self.close_request(request)
2504
1583
2505
1584
def process_request(self, request, address):
2506
1585
"""Start a new process to process the request."""
2507
proc = multiprocessing.Process(target=self.sub_process_main,
2508
args=(request, address))
1586
proc = multiprocessing.Process(target = self.sub_process_main,
1587
args = (request,
1588
address))
2509
1589
proc.start()
2510
1590
return proc
2511
1591
2512
1592
2513
1593
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2514
1594
""" adds a pipe to the MixIn """
2515
2516
1595
def process_request(self, request, client_address):
2517
1596
"""Overrides and wraps the original process_request().
2518
1597
2519
1598
This function creates a new pipe in self.pipe
2520
1599
"""
2521
1600
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2522
1601
2523
1602
proc = MultiprocessingMixIn.process_request(self, request,
2524
1603
client_address)
2525
1604
self.child_pipe.close()
2526
1605
self.add_pipe(parent_pipe, proc)
2527
1606
2528
1607
def add_pipe(self, parent_pipe, proc):
2529
1608
"""Dummy function; override as necessary"""
2530
raise NotImplementedError()
1609
raise NotImplementedError
2531
1610
2532
1611
2533
1612
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2534
1613
socketserver.TCPServer, object):
2535
1614
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
2536
1615
2537
1616
Attributes:
2538
1617
enabled: Boolean; whether this server is activated yet
2539
1618
interface: None or a network interface name (string)
2540
1619
use_ipv6: Boolean; to use IPv6 or not
2541
1620
"""
2542
2543
1621
def __init__(self, server_address, RequestHandlerClass,
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
"""
1622
interface=None, use_ipv6=True):
2550
1623
self.interface = interface
2551
1624
if use_ipv6:
2552
1625
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.
2580
1626
socketserver.TCPServer.__init__(self, server_address,
2581
1627
RequestHandlerClass)
2582
2583
1628
def server_bind(self):
2584
1629
"""This overrides the normal server_bind() function
2585
1630
to bind to an interface if one was specified, and also NOT to
2586
1631
bind to an address or port if they were not specified."""
2587
global SO_BINDTODEVICE
2588
1632
if self.interface is not None:
2589
1633
if SO_BINDTODEVICE is None:
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
1634
logger.error("SO_BINDTODEVICE does not exist;"
1635
" cannot bind to interface %s",
1636
self.interface)
1637
else:
1638
try:
1639
self.socket.setsockopt(socket.SOL_SOCKET,
1640
SO_BINDTODEVICE,
1641
str(self.interface
1642
+ '\0'))
1643
except socket.error as error:
1644
if error[0] == errno.EPERM:
1645
logger.error("No permission to"
1646
" bind to interface %s",
1647
self.interface)
1648
elif error[0] == errno.ENOPROTOOPT:
1649
logger.error("SO_BINDTODEVICE not available;"
1650
" cannot bind to interface %s",
1651
self.interface)
1652
else:
1653
raise
2611
1654
# Only bind(2) the socket if we really need to.
2612
1655
if self.server_address[0] or self.server_address[1]:
2613
if self.server_address[1]:
2614
self.allow_reuse_address = True
2615
1656
if not self.server_address[0]:
2616
1657
if self.address_family == socket.AF_INET6:
2617
any_address = "::" # in6addr_any
1658
any_address = "::" # in6addr_any
2618
1659
else:
2619
any_address = "0.0.0.0" # INADDR_ANY
1660
any_address = socket.INADDR_ANY
2620
1661
self.server_address = (any_address,
2621
1662
self.server_address[1])
2622
1663
elif not self.server_address[1]:
2623
self.server_address = (self.server_address[0], 0)
1664
self.server_address = (self.server_address[0],
1665
0)
2624
1666
# if self.interface:
2625
1667
# self.server_address = (self.server_address[0],
2626
1668
# 0, # port
2632
1674
2633
1675
class MandosServer(IPv6_TCPServer):
2634
1676
"""Mandos server.
2635
1677
2636
1678
Attributes:
2637
1679
clients: set of Client objects
2638
1680
gnutls_priority GnuTLS priority string
2639
1681
use_dbus: Boolean; to emit D-Bus signals or not
2640
2641
Assumes a GLib.MainLoop event loop.
1682
1683
Assumes a gobject.MainLoop event loop.
2642
1684
"""
2643
2644
1685
def __init__(self, server_address, RequestHandlerClass,
2645
interface=None,
2646
use_ipv6=True,
2647
clients=None,
2648
gnutls_priority=None,
2649
use_dbus=True,
2650
socketfd=None):
1686
interface=None, use_ipv6=True, clients=None,
1687
gnutls_priority=None, use_dbus=True):
2651
1688
self.enabled = False
2652
1689
self.clients = clients
2653
1690
if self.clients is None:
2656
1693
self.gnutls_priority = gnutls_priority
2657
1694
IPv6_TCPServer.__init__(self, server_address,
2658
1695
RequestHandlerClass,
2659
interface=interface,
2660
use_ipv6=use_ipv6,
2661
socketfd=socketfd)
2662
1696
interface = interface,
1697
use_ipv6 = use_ipv6)
2663
1698
def server_activate(self):
2664
1699
if self.enabled:
2665
1700
return socketserver.TCPServer.server_activate(self)
2666
1701
2667
1702
def enable(self):
2668
1703
self.enabled = True
2669
1704
2670
1705
def add_pipe(self, parent_pipe, proc):
2671
1706
# Call "handle_ipc" for both data and EOF events
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,
2682
client_object=None):
1707
gobject.io_add_watch(parent_pipe.fileno(),
1708
gobject.IO_IN | gobject.IO_HUP,
1709
functools.partial(self.handle_ipc,
1710
parent_pipe =
1711
parent_pipe,
1712
proc = proc))
1713
1714
def handle_ipc(self, source, condition, parent_pipe=None,
1715
proc = None, client_object=None):
1716
condition_names = {
1717
gobject.IO_IN: "IN", # There is data to read.
1718
gobject.IO_OUT: "OUT", # Data can be written (without
1719
# blocking).
1720
gobject.IO_PRI: "PRI", # There is urgent data to read.
1721
gobject.IO_ERR: "ERR", # Error condition.
1722
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1723
# broken, usually for pipes and
1724
# sockets).
1725
}
1726
conditions_string = ' | '.join(name
1727
for cond, name in
1728
condition_names.iteritems()
1729
if cond & condition)
2683
1730
# error, or the other end of multiprocessing.Pipe has closed
2684
if condition & (GLib.IO_ERR | GLib.IO_HUP):
1731
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2685
1732
# Wait for other process to exit
2686
1733
proc.join()
2687
1734
return False
2688
1735
2689
1736
# Read a request from the child
2690
1737
request = parent_pipe.recv()
2691
1738
command = request[0]
2692
1739
2693
1740
if command == 'init':
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:
1741
fpr = request[1]
1742
address = request[2]
1743
1744
for c in self.clients.itervalues():
1745
if c.fingerprint == fpr:
2705
1746
client = c
2706
1747
break
2707
1748
else:
2708
logger.info("Client not found for key ID: %s, address"
2709
": %s", key_id or fpr, address)
1749
logger.info("Client not found for fingerprint: %s, ad"
1750
"dress: %s", fpr, address)
2710
1751
if self.use_dbus:
2711
1752
# Emit D-Bus signal
2712
mandos_dbus_service.ClientNotFound(key_id or fpr,
1753
mandos_dbus_service.ClientNotFound(fpr,
2713
1754
address[0])
2714
1755
parent_pipe.send(False)
2715
1756
return False
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))
1757
1758
gobject.io_add_watch(parent_pipe.fileno(),
1759
gobject.IO_IN | gobject.IO_HUP,
1760
functools.partial(self.handle_ipc,
1761
parent_pipe =
1762
parent_pipe,
1763
proc = proc,
1764
client_object =
1765
client))
2724
1766
parent_pipe.send(True)
2725
1767
# remove the old hook in favor of the new above hook on
2726
1768
# same fileno
2729
1771
funcname = request[1]
2730
1772
args = request[2]
2731
1773
kwargs = request[3]
2732
1774
2733
1775
parent_pipe.send(('data', getattr(client_object,
2734
1776
funcname)(*args,
2735
**kwargs)))
2736
1777
**kwargs)))
1778
2737
1779
if command == 'getattr':
2738
1780
attrname = request[1]
2739
if isinstance(client_object.__getattribute__(attrname),
2740
collections.Callable):
2741
parent_pipe.send(('function', ))
1781
if callable(client_object.__getattribute__(attrname)):
1782
parent_pipe.send(('function',))
2742
1783
else:
2743
parent_pipe.send((
2744
'data', client_object.__getattribute__(attrname)))
2745
1784
parent_pipe.send(('data', client_object
1785
.__getattribute__(attrname)))
1786
2746
1787
if command == 'setattr':
2747
1788
attrname = request[1]
2748
1789
value = request[2]
2749
1790
setattr(client_object, attrname, value)
2750
1791
2751
1792
return True
2752
1793
2753
1794
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
2853
1795
def string_to_delta(interval):
2854
1796
"""Parse a string and return a datetime.timedelta
2855
1797
2856
1798
>>> string_to_delta('7d')
2857
1799
datetime.timedelta(7)
2858
1800
>>> string_to_delta('60s')
2866
1808
>>> string_to_delta('5m 30s')
2867
1809
datetime.timedelta(0, 330)
2868
1810
"""
2869
2870
try:
2871
return rfc3339_duration_to_delta(interval)
2872
except ValueError:
2873
pass
2874
2875
1811
timevalue = datetime.timedelta(0)
2876
1812
for s in interval.split():
2877
1813
try:
2878
suffix = s[-1]
1814
suffix = unicode(s[-1])
2879
1815
value = int(s[:-1])
2880
1816
if suffix == "d":
2881
1817
delta = datetime.timedelta(value)
2888
1824
elif suffix == "w":
2889
1825
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2890
1826
else:
2891
raise ValueError("Unknown suffix {!r}".format(suffix))
2892
except IndexError as e:
1827
raise ValueError("Unknown suffix %r" % suffix)
1828
except (ValueError, IndexError) as e:
2893
1829
raise ValueError(*(e.args))
2894
1830
timevalue += delta
2895
1831
return timevalue
2896
1832
2897
1833
2898
def daemon(nochdir=False, noclose=False):
1834
def if_nametoindex(interface):
1835
"""Call the C function if_nametoindex(), or equivalent
1836
1837
Note: This function cannot accept a unicode string."""
1838
global if_nametoindex
1839
try:
1840
if_nametoindex = (ctypes.cdll.LoadLibrary
1841
(ctypes.util.find_library("c"))
1842
.if_nametoindex)
1843
except (OSError, AttributeError):
1844
logger.warning("Doing if_nametoindex the hard way")
1845
def if_nametoindex(interface):
1846
"Get an interface index the hard way, i.e. using fcntl()"
1847
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1848
with contextlib.closing(socket.socket()) as s:
1849
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1850
struct.pack(str("16s16x"),
1851
interface))
1852
interface_index = struct.unpack(str("I"),
1853
ifreq[16:20])[0]
1854
return interface_index
1855
return if_nametoindex(interface)
1856
1857
1858
def daemon(nochdir = False, noclose = False):
2899
1859
"""See daemon(3). Standard BSD Unix function.
2900
1860
2901
1861
This should really exist as os.daemon, but it doesn't (yet)."""
2902
1862
if os.fork():
2903
1863
sys.exit()
2908
1868
sys.exit()
2909
1869
if not noclose:
2910
1870
# Close all standard open file descriptors
2911
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1871
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2912
1872
if not stat.S_ISCHR(os.fstat(null).st_mode):
2913
1873
raise OSError(errno.ENODEV,
2914
"{} not a character device"
2915
.format(os.devnull))
1874
"%s not a character device"
1875
% os.path.devnull)
2916
1876
os.dup2(null, sys.stdin.fileno())
2917
1877
os.dup2(null, sys.stdout.fileno())
2918
1878
os.dup2(null, sys.stderr.fileno())
2921
1881
2922
1882
2923
1883
def main():
2924
1884
2925
1885
##################################################################
2926
1886
# Parsing of options, both command line and config file
2927
1887
2928
1888
parser = argparse.ArgumentParser()
2929
1889
parser.add_argument("-v", "--version", action="version",
2930
version="%(prog)s {}".format(version),
1890
version = "%%(prog)s %s" % version,
2931
1891
help="show version number and exit")
2932
1892
parser.add_argument("-i", "--interface", metavar="IF",
2933
1893
help="Bind to interface IF")
2939
1899
help="Run self-test")
2940
1900
parser.add_argument("--debug", action="store_true",
2941
1901
help="Debug mode; run in foreground and log"
2942
" to terminal", default=None)
1902
" to terminal")
2943
1903
parser.add_argument("--debuglevel", metavar="LEVEL",
2944
1904
help="Debug level for stdout output")
2945
1905
parser.add_argument("--priority", help="GnuTLS"
2952
1912
" files")
2953
1913
parser.add_argument("--no-dbus", action="store_false",
2954
1914
dest="use_dbus", help="Do not provide D-Bus"
2955
" system bus interface", default=None)
1915
" system bus interface")
2956
1916
parser.add_argument("--no-ipv6", action="store_false",
2957
dest="use_ipv6", help="Do not use IPv6",
2958
default=None)
1917
dest="use_ipv6", help="Do not use IPv6")
2959
1918
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)
1919
dest="restore", help="Do not restore old state",
1920
default=True)
2972
1921
2973
1922
options = parser.parse_args()
2974
1923
2975
1924
if options.check:
2976
1925
import doctest
2977
fail_count, test_count = doctest.testmod()
2978
sys.exit(os.EX_OK if fail_count == 0 else 1)
2979
1926
doctest.testmod()
1927
sys.exit()
1928
2980
1929
# Default values for config file for server-global settings
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
1930
server_defaults = { "interface": "",
1931
"address": "",
1932
"port": "",
1933
"debug": "False",
1934
"priority":
1935
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1936
"servicename": "Mandos",
1937
"use_dbus": "True",
1938
"use_ipv6": "True",
1939
"debuglevel": "",
1940
}
1941
3004
1942
# Parse config file for server-global settings
3005
server_config = configparser.ConfigParser(server_defaults)
1943
server_config = configparser.SafeConfigParser(server_defaults)
3006
1944
del server_defaults
3007
server_config.read(os.path.join(options.configdir, "mandos.conf"))
3008
# Convert the ConfigParser object to a dict
1945
server_config.read(os.path.join(options.configdir,
1946
"mandos.conf"))
1947
# Convert the SafeConfigParser object to a dict
3009
1948
server_settings = server_config.defaults()
3010
1949
# Use the appropriate methods on the non-string config options
3011
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3012
"foreground", "zeroconf"):
1950
for option in ("debug", "use_dbus", "use_ipv6"):
3013
1951
server_settings[option] = server_config.getboolean("DEFAULT",
3014
1952
option)
3015
1953
if server_settings["port"]:
3016
1954
server_settings["port"] = server_config.getint("DEFAULT",
3017
1955
"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"])
3027
1956
del server_config
3028
1957
3029
1958
# Override the settings from the config file with command line
3030
1959
# options, if set.
3031
1960
for option in ("interface", "address", "port", "debug",
3032
"priority", "servicename", "configdir", "use_dbus",
3033
"use_ipv6", "debuglevel", "restore", "statedir",
3034
"socket", "foreground", "zeroconf"):
1961
"priority", "servicename", "configdir",
1962
"use_dbus", "use_ipv6", "debuglevel", "restore"):
3035
1963
value = getattr(options, option)
3036
1964
if value is not None:
3037
1965
server_settings[option] = value
3038
1966
del options
3039
1967
# Force all strings to be unicode
3040
1968
for option in server_settings.keys():
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
1969
if type(server_settings[option]) is str:
1970
server_settings[option] = unicode(server_settings[option])
3051
1971
# Now we have our good server settings in "server_settings"
3052
1972
3053
1973
##################################################################
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
1974
3060
1975
# For convenience
3061
1976
debug = server_settings["debug"]
3062
1977
debuglevel = server_settings["debuglevel"]
3063
1978
use_dbus = server_settings["use_dbus"]
3064
1979
use_ipv6 = server_settings["use_ipv6"]
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
1980
3079
1981
if server_settings["servicename"] != "Mandos":
3080
syslogger.setFormatter(
3081
logging.Formatter('Mandos ({}) [%(process)d]:'
3082
' %(levelname)s: %(message)s'.format(
3083
server_settings["servicename"])))
3084
1982
syslogger.setFormatter(logging.Formatter
1983
('Mandos (%s) [%%(process)d]:'
1984
' %%(levelname)s: %%(message)s'
1985
% server_settings["servicename"]))
1986
3085
1987
# Parse config file with clients
3086
client_config = configparser.ConfigParser(Client.client_defaults)
1988
client_defaults = { "timeout": "5m",
1989
"extended_timeout": "15m",
1990
"interval": "2m",
1991
"checker": "fping -q -- %%(host)s",
1992
"host": "",
1993
"approval_delay": "0s",
1994
"approval_duration": "1s",
1995
}
1996
client_config = configparser.SafeConfigParser(client_defaults)
3087
1997
client_config.read(os.path.join(server_settings["configdir"],
3088
1998
"clients.conf"))
3089
1999
3090
2000
global mandos_dbus_service
3091
2001
mandos_dbus_service = None
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
2002
2003
tcp_server = MandosServer((server_settings["address"],
2004
server_settings["port"]),
2005
ClientHandler,
2006
interface=(server_settings["interface"]
2007
or None),
2008
use_ipv6=use_ipv6,
2009
gnutls_priority=
2010
server_settings["priority"],
2011
use_dbus=use_dbus)
2012
if not debug:
2013
pidfilename = "/var/run/mandos.pid"
2014
try:
2015
pidfile = open(pidfilename, "w")
2016
except IOError:
2017
logger.error("Could not open file %r", pidfilename)
2018
2019
try:
2020
uid = pwd.getpwnam("_mandos").pw_uid
2021
gid = pwd.getpwnam("_mandos").pw_gid
2022
except KeyError:
2023
try:
2024
uid = pwd.getpwnam("mandos").pw_uid
2025
gid = pwd.getpwnam("mandos").pw_gid
3122
2026
except KeyError:
3123
continue
3124
else:
3125
uid = 65534
3126
gid = 65534
2027
try:
2028
uid = pwd.getpwnam("nobody").pw_uid
2029
gid = pwd.getpwnam("nobody").pw_gid
2030
except KeyError:
2031
uid = 65534
2032
gid = 65534
3127
2033
try:
3128
2034
os.setgid(gid)
3129
2035
os.setuid(uid)
3130
if debug:
3131
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3132
gid))
3133
2036
except OSError as error:
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
2037
if error[0] != errno.EPERM:
2038
raise error
2039
2040
if not debug and not debuglevel:
2041
syslogger.setLevel(logging.WARNING)
2042
console.setLevel(logging.WARNING)
2043
if debuglevel:
2044
level = getattr(logging, debuglevel.upper())
2045
syslogger.setLevel(level)
2046
console.setLevel(level)
2047
3139
2048
if debug:
3140
2049
# Enable all possible GnuTLS debugging
3141
2050
3142
2051
# "Use a log level over 10 to enable all debugging options."
3143
2052
# - GnuTLS manual
3144
gnutls.global_set_log_level(11)
3145
3146
@gnutls.log_func
2053
gnutls.library.functions.gnutls_global_set_log_level(11)
2054
2055
@gnutls.library.types.gnutls_log_func
3147
2056
def debug_gnutls(level, string):
3148
2057
logger.debug("GnuTLS: %s", string[:-1])
3149
3150
gnutls.global_set_log_function(debug_gnutls)
3151
2058
2059
(gnutls.library.functions
2060
.gnutls_global_set_log_function(debug_gnutls))
2061
3152
2062
# Redirect stdin so all checkers get /dev/null
3153
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2063
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3154
2064
os.dup2(null, sys.stdin.fileno())
3155
2065
if null > 2:
3156
2066
os.close(null)
3157
2067
else:
2068
# No console logging
2069
logger.removeHandler(console)
2070
3158
2071
# Need to fork before connecting to D-Bus
3159
if not foreground:
2072
if not debug:
3160
2073
# Close all input and output, do double fork, etc.
3161
2074
daemon()
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
2075
3168
2076
global main_loop
3169
2077
# From the Avahi example code
3170
DBusGMainLoop(set_as_default=True)
3171
main_loop = GLib.MainLoop()
2078
DBusGMainLoop(set_as_default=True )
2079
main_loop = gobject.MainLoop()
3172
2080
bus = dbus.SystemBus()
3173
2081
# End of Avahi example code
3174
2082
if use_dbus:
3175
2083
try:
3176
2084
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)
2085
bus, do_not_queue=True)
2086
old_bus_name = (dbus.service.BusName
2087
("se.bsnet.fukt.Mandos", bus,
2088
do_not_queue=True))
2089
except dbus.exceptions.NameExistsException as e:
2090
logger.error(unicode(e) + ", disabling D-Bus")
3184
2091
use_dbus = False
3185
2092
server_settings["use_dbus"] = False
3186
2093
tcp_server.use_dbus = False
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
2094
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2095
service = AvahiService(name = server_settings["servicename"],
2096
servicetype = "_mandos._tcp",
2097
protocol = protocol, bus = bus)
2098
if server_settings["interface"]:
2099
service.interface = (if_nametoindex
2100
(str(server_settings["interface"])))
2101
3198
2102
global multiprocessing_manager
3199
2103
multiprocessing_manager = multiprocessing.Manager()
3200
2104
3201
2105
client_class = Client
3202
2106
if use_dbus:
3203
client_class = functools.partial(ClientDBus, bus=bus)
3204
3205
client_settings = Client.config_parser(client_config)
2107
client_class = functools.partial(ClientDBusTransitional,
2108
bus = bus)
2109
2110
special_settings = {
2111
# Some settings need to be accessd by special methods;
2112
# booleans need .getboolean(), etc. Here is a list of them:
2113
"approved_by_default":
2114
lambda section:
2115
client_config.getboolean(section, "approved_by_default"),
2116
}
2117
# Construct a new dict of client settings of this form:
2118
# { client_name: {setting_name: value, ...}, ...}
2119
# with exceptions for any special settings as defined above
2120
client_settings = dict((clientname,
2121
dict((setting,
2122
(value if setting not in special_settings
2123
else special_settings[setting](clientname)))
2124
for setting, value in client_config.items(clientname)))
2125
for clientname in client_config.sections())
2126
3206
2127
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.
2128
clients_data = []
2129
3218
2130
if server_settings["restore"]:
3219
2131
try:
3220
2132
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"))
2133
clients_data, old_client_settings = pickle.load(stored_state)
3270
2134
os.remove(stored_state_path)
3271
2135
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)
2136
logger.warning("Could not load persistant state: {0}".format(e))
2137
if e.errno != errno.ENOENT:
3278
2138
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))
2139
2140
for client in clients_data:
2141
client_name = client["name"]
2142
2143
# Decide which value to use after restoring saved state.
2144
# We have three different values: Old config file,
2145
# new config file, and saved state.
2146
# New config value takes precedence if it differs from old
2147
# config value, otherwise use saved state.
2148
for name, value in client_settings[client_name].items():
3335
2149
try:
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)
2150
# For each value in new config, check if it differs
2151
# from the old config value (Except for the "secret"
2152
# attribute)
2153
if name != "secret" and value != old_client_settings[client_name][name]:
2154
setattr(client, name, value)
2155
except KeyError:
2156
pass
2157
2158
# Clients who has passed its expire date, can still be enabled if its
2159
# last checker was sucessful. Clients who checkers failed before we
2160
# stored it state is asumed to had failed checker during downtime.
2161
if client["enabled"] and client["last_checked_ok"]:
2162
if ((datetime.datetime.utcnow() - client["last_checked_ok"])
2163
> client["interval"]):
2164
if client["last_checker_status"] != 0:
2165
client["enabled"] = False
2166
else:
2167
client["expires"] = datetime.datetime.utcnow() + client["timeout"]
2168
2169
client["changedstate"] = (multiprocessing_manager
2170
.Condition(multiprocessing_manager
2171
.Lock()))
2172
if use_dbus:
2173
new_client = ClientDBusTransitional.__new__(ClientDBusTransitional)
2174
tcp_server.clients[client_name] = new_client
2175
new_client.bus = bus
2176
for name, value in client.iteritems():
2177
setattr(new_client, name, value)
2178
client_object_name = unicode(client_name).translate(
2179
{ord("."): ord("_"),
2180
ord("-"): ord("_")})
2181
new_client.dbus_object_path = (dbus.ObjectPath
2182
("/clients/" + client_object_name))
2183
DBusObjectWithProperties.__init__(new_client,
2184
new_client.bus,
2185
new_client.dbus_object_path)
2186
else:
2187
tcp_server.clients[client_name] = Client.__new__(Client)
2188
for name, value in client.iteritems():
2189
setattr(tcp_server.clients[client_name], name, value)
2190
2191
tcp_server.clients[client_name].decrypt_secret(
2192
client_settings[client_name]["secret"])
2193
2194
# Create/remove clients based on new changes made to config
2195
for clientname in set(old_client_settings) - set(client_settings):
2196
del tcp_server.clients[clientname]
2197
for clientname in set(client_settings) - set(old_client_settings):
2198
tcp_server.clients[clientname] = (client_class(name = clientname,
2199
config =
2200
client_settings
2201
[clientname]))
2202
3360
2203
3361
2204
if not tcp_server.clients:
3362
2205
logger.warning("No clients defined")
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
2206
2207
if not debug:
2208
try:
2209
with pidfile:
2210
pid = os.getpid()
2211
pidfile.write(str(pid) + "\n".encode("utf-8"))
2212
del pidfile
2213
except IOError:
2214
logger.error("Could not write to file %r with PID %d",
2215
pidfilename, pid)
2216
except NameError:
2217
# "pidfile" was never created
2218
pass
3374
2219
del pidfilename
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
2220
2221
signal.signal(signal.SIGINT, signal.SIG_IGN)
2222
2223
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2224
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2225
3380
2226
if use_dbus:
3381
3382
@alternate_dbus_interfaces(
3383
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3384
class MandosDBusService(DBusObjectWithObjectManager):
2227
class MandosDBusService(dbus.service.Object):
3385
2228
"""A D-Bus proxy object"""
3386
3387
2229
def __init__(self):
3388
2230
dbus.service.Object.__init__(self, bus, "/")
3389
3390
2231
_interface = "se.recompile.Mandos"
3391
2232
3392
2233
@dbus.service.signal(_interface, signature="o")
3393
2234
def ClientAdded(self, objpath):
3394
2235
"D-Bus signal"
3395
2236
pass
3396
2237
3397
2238
@dbus.service.signal(_interface, signature="ss")
3398
def ClientNotFound(self, key_id, address):
2239
def ClientNotFound(self, fingerprint, address):
3399
2240
"D-Bus signal"
3400
2241
pass
3401
3402
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3403
"true"})
2242
3404
2243
@dbus.service.signal(_interface, signature="os")
3405
2244
def ClientRemoved(self, objpath, name):
3406
2245
"D-Bus signal"
3407
2246
pass
3408
3409
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3410
"true"})
2247
3411
2248
@dbus.service.method(_interface, out_signature="ao")
3412
2249
def GetAllClients(self):
3413
2250
"D-Bus method"
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"})
2251
return dbus.Array(c.dbus_object_path
2252
for c in
2253
tcp_server.clients.itervalues())
2254
3419
2255
@dbus.service.method(_interface,
3420
2256
out_signature="a{oa{sv}}")
3421
2257
def GetAllClientsWithProperties(self):
3422
2258
"D-Bus method"
3423
2259
return dbus.Dictionary(
3424
{c.dbus_object_path: c.GetAll(
3425
"se.recompile.Mandos.Client")
3426
for c in tcp_server.clients.values()},
2260
((c.dbus_object_path, c.GetAll(""))
2261
for c in tcp_server.clients.itervalues()),
3427
2262
signature="oa{sv}")
3428
2263
3429
2264
@dbus.service.method(_interface, in_signature="o")
3430
2265
def RemoveClient(self, object_path):
3431
2266
"D-Bus method"
3432
for c in tcp_server.clients.values():
2267
for c in tcp_server.clients.itervalues():
3433
2268
if c.dbus_object_path == object_path:
3434
2269
del tcp_server.clients[c.name]
3435
2270
c.remove_from_connection()
3436
# Don't signal the disabling
2271
# Don't signal anything except ClientRemoved
3437
2272
c.disable(quiet=True)
3438
# Emit D-Bus signal for removal
3439
self.client_removed_signal(c)
2273
# Emit D-Bus signal
2274
self.ClientRemoved(object_path, c.name)
3440
2275
return
3441
2276
raise KeyError(object_path)
3442
2277
3443
2278
del _interface
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
3481
mandos_dbus_service = MandosDBusService()
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
2279
2280
class MandosDBusServiceTransitional(MandosDBusService):
2281
__metaclass__ = AlternateDBusNamesMetaclass
2282
mandos_dbus_service = MandosDBusServiceTransitional()
2283
3488
2284
def cleanup():
3489
2285
"Cleanup function; run on exit"
3490
if zeroconf:
3491
service.cleanup()
3492
3493
mp.active_children()
3494
wn.close()
2286
service.cleanup()
2287
2288
multiprocessing.active_children()
3495
2289
if not (tcp_server.clients or client_settings):
3496
2290
return
3497
2291
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
2292
# Store client before exiting. Secrets are encrypted with key based
2293
# on what config file has. If config file is removed/edited, old
2294
# secret will thus be unrecovable.
2295
clients = []
2296
for client in tcp_server.clients.itervalues():
2297
client.encrypt_secret(client_settings[client.name]["secret"])
2298
2299
client_dict = {}
2300
2301
# A list of attributes that will not be stored when shuting down.
2302
exclude = set(("bus", "changedstate", "secret"))
2303
for name, typ in inspect.getmembers(dbus.service.Object):
2304
exclude.add(name)
2305
2306
client_dict["encrypted_secret"] = client.encrypted_secret
2307
for attr in client.client_structure:
2308
if attr not in exclude:
2309
client_dict[attr] = getattr(client, attr)
2310
2311
clients.append(client_dict)
2312
del client_settings[client.name]["secret"]
2313
3526
2314
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)
2315
with os.fdopen(os.open(stored_state_path, os.O_CREAT|os.O_WRONLY|os.O_TRUNC, 0600), "wb") as stored_state:
2316
pickle.dump((clients, client_settings), stored_state)
2317
except IOError as e:
2318
logger.warning("Could not save persistant state: {0}".format(e))
2319
if e.errno != errno.ENOENT:
3549
2320
raise
3550
2321
3551
2322
# Delete all clients, and settings from config
3553
2324
name, client = tcp_server.clients.popitem()
3554
2325
if use_dbus:
3555
2326
client.remove_from_connection()
3556
# Don't signal the disabling
2327
# Don't signal anything except ClientRemoved
3557
2328
client.disable(quiet=True)
3558
# Emit D-Bus signal for removal
3559
2329
if use_dbus:
3560
mandos_dbus_service.client_removed_signal(client)
2330
# Emit D-Bus signal
2331
mandos_dbus_service.ClientRemoved(client
2332
.dbus_object_path,
2333
client.name)
3561
2334
client_settings.clear()
3562
2335
3563
2336
atexit.register(cleanup)
3564
3565
for client in tcp_server.clients.values():
2337
2338
for client in tcp_server.clients.itervalues():
3566
2339
if use_dbus:
3567
# Emit D-Bus signal for adding
3568
mandos_dbus_service.client_added_signal(client)
2340
# Emit D-Bus signal
2341
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3569
2342
# Need to initiate checking of clients
3570
2343
if client.enabled:
3571
2344
client.init_checker()
3572
2345
2346
3573
2347
tcp_server.enable()
3574
2348
tcp_server.server_activate()
3575
2349
3576
2350
# Find out what port we got
3577
if zeroconf:
3578
service.port = tcp_server.socket.getsockname()[1]
2351
service.port = tcp_server.socket.getsockname()[1]
3579
2352
if use_ipv6:
3580
2353
logger.info("Now listening on address %r, port %d,"
3581
" flowinfo %d, scope_id %d",
3582
*tcp_server.socket.getsockname())
2354
" flowinfo %d, scope_id %d"
2355
% tcp_server.socket.getsockname())
3583
2356
else: # IPv4
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
2357
logger.info("Now listening on address %r, port %d"
2358
% tcp_server.socket.getsockname())
2359
2360
#service.interface = tcp_server.socket.getsockname()[3]
2361
3589
2362
try:
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
2363
# From the Avahi example code
2364
try:
2365
service.activate()
2366
except dbus.exceptions.DBusException as error:
2367
logger.critical("DBusException: %s", error)
2368
cleanup()
2369
sys.exit(1)
2370
# End of Avahi example code
2371
2372
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2373
lambda *args, **kwargs:
2374
(tcp_server.handle_request
2375
(*args[2:], **kwargs) or True))
2376
3605
2377
logger.debug("Starting main loop")
3606
2378
main_loop.run()
3607
2379
except AvahiError as error:
3608
logger.critical("Avahi Error", exc_info=error)
2380
logger.critical("AvahiError: %s", error)
3609
2381
cleanup()
3610
2382
sys.exit(1)
3611
2383
except KeyboardInterrupt:
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0