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- Committer: Teddy Hogeborn
- Date: 2019-08-05 14:31:51 UTC
- Revision ID: teddy@recompile.se-20190805143151-lt5d97wqif3t8250
Client: Debian package fix: Make uninstall when using dracut(8) work
Use the same logic to rebuild the initramfs image when uninstalling as
when installing the package.
* debian/mandos-client.postrm (update_initramfs): Use the same logic
as the update_initramfs function in debian/mandos-client.postinst.
Use the same logic to rebuild the initramfs image when uninstalling as
when installing the package.
* debian/mandos-client.postrm (update_initramfs): Use the same logic
as the update_initramfs function in debian/mandos-client.postinst.
- files added:
- bugs.xml
- debian/tests
- dracut-module
- files removed:
- initramfs-tools-hook-conf
- files modified:
- .bzrignore
added
removed
mandos
1
#!/usr/bin/python2.7
1
#!/usr/bin/python
2
2
# -*- mode: python; coding: utf-8 -*-
3
#
3
#
4
4
# Mandos server - give out binary blobs to connecting clients.
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 © 2008-2015 Teddy Hogeborn
15
# Copyright © 2008-2015 Björn Påhlsson
16
#
17
# This program is free software: you can redistribute it and/or modify
18
# it under the terms of the GNU General Public License as published by
14
# Copyright © 2008-2019 Teddy Hogeborn
15
# Copyright © 2008-2019 Björn Påhlsson
16
#
17
# This file is part of Mandos.
18
#
19
# Mandos is free software: you can redistribute it and/or modify it
20
# under the terms of the GNU General Public License as published by
19
21
# the Free Software Foundation, either version 3 of the License, or
20
22
# (at your option) any later version.
21
23
#
22
# This program is distributed in the hope that it will be useful,
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
24
# Mandos is distributed in the hope that it will be useful, but
25
# WITHOUT ANY WARRANTY; without even the implied warranty of
24
26
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25
27
# GNU General Public License for more details.
26
#
28
#
27
29
# You should have received a copy of the GNU General Public License
28
# along with this program. If not, see
29
# <http://www.gnu.org/licenses/>.
30
#
30
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
31
#
31
32
# Contact the authors at <mandos@recompile.se>.
32
#
33
#
33
34
34
35
from __future__ import (division, absolute_import, print_function,
35
36
unicode_literals)
36
37
37
from future_builtins import *
38
try:
39
from future_builtins import *
40
except ImportError:
41
pass
38
42
39
43
try:
40
44
import SocketServer as socketserver
44
48
import argparse
45
49
import datetime
46
50
import errno
47
import gnutls.crypto
48
import gnutls.connection
49
import gnutls.errors
50
import gnutls.library.functions
51
import gnutls.library.constants
52
import gnutls.library.types
53
51
try:
54
52
import ConfigParser as configparser
55
53
except ImportError:
82
80
83
81
import dbus
84
82
import dbus.service
85
try:
86
import gobject
87
except ImportError:
88
from gi.repository import GObject as gobject
89
import avahi
83
import gi
84
from gi.repository import GLib
90
85
from dbus.mainloop.glib import DBusGMainLoop
91
86
import ctypes
92
87
import ctypes.util
93
88
import xml.dom.minidom
94
89
import inspect
95
90
91
# Try to find the value of SO_BINDTODEVICE:
96
92
try:
93
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
94
# newer, and it is also the most natural place for it:
97
95
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
98
96
except AttributeError:
99
97
try:
98
# This is where SO_BINDTODEVICE was up to and including Python
99
# 2.6, and also 3.2:
100
100
from IN import SO_BINDTODEVICE
101
101
except ImportError:
102
SO_BINDTODEVICE = None
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
103
115
104
116
if sys.version_info.major == 2:
105
117
str = unicode
106
118
107
version = "1.6.9"
119
if sys.version_info < (3, 2):
120
configparser.Configparser = configparser.SafeConfigParser
121
122
version = "1.8.6"
108
123
stored_state_file = "clients.pickle"
109
124
110
125
logger = logging.getLogger()
114
129
if_nametoindex = ctypes.cdll.LoadLibrary(
115
130
ctypes.util.find_library("c")).if_nametoindex
116
131
except (OSError, AttributeError):
117
132
118
133
def if_nametoindex(interface):
119
134
"Get an interface index the hard way, i.e. using fcntl()"
120
135
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
125
140
return interface_index
126
141
127
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
128
159
def initlogger(debug, level=logging.WARNING):
129
160
"""init logger and add loglevel"""
130
161
131
162
global syslogger
132
163
syslogger = (logging.handlers.SysLogHandler(
133
facility = logging.handlers.SysLogHandler.LOG_DAEMON,
134
address = "/dev/log"))
164
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
165
address="/dev/log"))
135
166
syslogger.setFormatter(logging.Formatter
136
167
('Mandos [%(process)d]: %(levelname)s:'
137
168
' %(message)s'))
138
169
logger.addHandler(syslogger)
139
170
140
171
if debug:
141
172
console = logging.StreamHandler()
142
173
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
154
185
155
186
class PGPEngine(object):
156
187
"""A simple class for OpenPGP symmetric encryption & decryption"""
157
188
158
189
def __init__(self):
159
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
160
202
self.gnupgargs = ['--batch',
161
'--home', self.tempdir,
203
'--homedir', self.tempdir,
162
204
'--force-mdc',
163
'--quiet',
164
'--no-use-agent']
165
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
166
210
def __enter__(self):
167
211
return self
168
212
169
213
def __exit__(self, exc_type, exc_value, traceback):
170
214
self._cleanup()
171
215
return False
172
216
173
217
def __del__(self):
174
218
self._cleanup()
175
219
176
220
def _cleanup(self):
177
221
if self.tempdir is not None:
178
222
# Delete contents of tempdir
179
223
for root, dirs, files in os.walk(self.tempdir,
180
topdown = False):
224
topdown=False):
181
225
for filename in files:
182
226
os.remove(os.path.join(root, filename))
183
227
for dirname in dirs:
185
229
# Remove tempdir
186
230
os.rmdir(self.tempdir)
187
231
self.tempdir = None
188
232
189
233
def password_encode(self, password):
190
234
# Passphrase can not be empty and can not contain newlines or
191
235
# NUL bytes. So we prefix it and hex encode it.
196
240
.replace(b"\n", b"\\n")
197
241
.replace(b"\0", b"\\x00"))
198
242
return encoded
199
243
200
244
def encrypt(self, data, password):
201
245
passphrase = self.password_encode(password)
202
246
with tempfile.NamedTemporaryFile(
203
247
dir=self.tempdir) as passfile:
204
248
passfile.write(passphrase)
205
249
passfile.flush()
206
proc = subprocess.Popen(['gpg', '--symmetric',
250
proc = subprocess.Popen([self.gpg, '--symmetric',
207
251
'--passphrase-file',
208
252
passfile.name]
209
253
+ self.gnupgargs,
210
stdin = subprocess.PIPE,
211
stdout = subprocess.PIPE,
212
stderr = subprocess.PIPE)
213
ciphertext, err = proc.communicate(input = data)
254
stdin=subprocess.PIPE,
255
stdout=subprocess.PIPE,
256
stderr=subprocess.PIPE)
257
ciphertext, err = proc.communicate(input=data)
214
258
if proc.returncode != 0:
215
259
raise PGPError(err)
216
260
return ciphertext
217
261
218
262
def decrypt(self, data, password):
219
263
passphrase = self.password_encode(password)
220
264
with tempfile.NamedTemporaryFile(
221
dir = self.tempdir) as passfile:
265
dir=self.tempdir) as passfile:
222
266
passfile.write(passphrase)
223
267
passfile.flush()
224
proc = subprocess.Popen(['gpg', '--decrypt',
268
proc = subprocess.Popen([self.gpg, '--decrypt',
225
269
'--passphrase-file',
226
270
passfile.name]
227
271
+ self.gnupgargs,
228
stdin = subprocess.PIPE,
229
stdout = subprocess.PIPE,
230
stderr = subprocess.PIPE)
231
decrypted_plaintext, err = proc.communicate(input = data)
272
stdin=subprocess.PIPE,
273
stdout=subprocess.PIPE,
274
stderr=subprocess.PIPE)
275
decrypted_plaintext, err = proc.communicate(input=data)
232
276
if proc.returncode != 0:
233
277
raise PGPError(err)
234
278
return decrypted_plaintext
235
279
236
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
306
237
307
class AvahiError(Exception):
238
308
def __init__(self, value, *args, **kwargs):
239
309
self.value = value
251
321
252
322
class AvahiService(object):
253
323
"""An Avahi (Zeroconf) service.
254
324
255
325
Attributes:
256
326
interface: integer; avahi.IF_UNSPEC or an interface index.
257
327
Used to optionally bind to the specified interface.
269
339
server: D-Bus Server
270
340
bus: dbus.SystemBus()
271
341
"""
272
342
273
343
def __init__(self,
274
interface = avahi.IF_UNSPEC,
275
name = None,
276
servicetype = None,
277
port = None,
278
TXT = None,
279
domain = "",
280
host = "",
281
max_renames = 32768,
282
protocol = avahi.PROTO_UNSPEC,
283
bus = None):
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):
284
354
self.interface = interface
285
355
self.name = name
286
356
self.type = servicetype
295
365
self.server = None
296
366
self.bus = bus
297
367
self.entry_group_state_changed_match = None
298
368
299
369
def rename(self, remove=True):
300
370
"""Derived from the Avahi example code"""
301
371
if self.rename_count >= self.max_renames:
321
391
logger.critical("D-Bus Exception", exc_info=error)
322
392
self.cleanup()
323
393
os._exit(1)
324
394
325
395
def remove(self):
326
396
"""Derived from the Avahi example code"""
327
397
if self.entry_group_state_changed_match is not None:
329
399
self.entry_group_state_changed_match = None
330
400
if self.group is not None:
331
401
self.group.Reset()
332
402
333
403
def add(self):
334
404
"""Derived from the Avahi example code"""
335
405
self.remove()
352
422
dbus.UInt16(self.port),
353
423
avahi.string_array_to_txt_array(self.TXT))
354
424
self.group.Commit()
355
425
356
426
def entry_group_state_changed(self, state, error):
357
427
"""Derived from the Avahi example code"""
358
428
logger.debug("Avahi entry group state change: %i", state)
359
429
360
430
if state == avahi.ENTRY_GROUP_ESTABLISHED:
361
431
logger.debug("Zeroconf service established.")
362
432
elif state == avahi.ENTRY_GROUP_COLLISION:
366
436
logger.critical("Avahi: Error in group state changed %s",
367
437
str(error))
368
438
raise AvahiGroupError("State changed: {!s}".format(error))
369
439
370
440
def cleanup(self):
371
441
"""Derived from the Avahi example code"""
372
442
if self.group is not None:
377
447
pass
378
448
self.group = None
379
449
self.remove()
380
450
381
451
def server_state_changed(self, state, error=None):
382
452
"""Derived from the Avahi example code"""
383
453
logger.debug("Avahi server state change: %i", state)
412
482
logger.debug("Unknown state: %r", state)
413
483
else:
414
484
logger.debug("Unknown state: %r: %r", state, error)
415
485
416
486
def activate(self):
417
487
"""Derived from the Avahi example code"""
418
488
if self.server is None:
429
499
class AvahiServiceToSyslog(AvahiService):
430
500
def rename(self, *args, **kwargs):
431
501
"""Add the new name to the syslog messages"""
432
ret = AvahiService.rename(self, *args, **kwargs)
502
ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
433
503
syslogger.setFormatter(logging.Formatter(
434
504
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
435
505
.format(self.name)))
436
506
return ret
437
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
438
810
def call_pipe(connection, # : multiprocessing.Connection
439
811
func, *args, **kwargs):
440
812
"""This function is meant to be called by multiprocessing.Process
441
813
442
814
This function runs func(*args, **kwargs), and writes the resulting
443
815
return value on the provided multiprocessing.Connection.
444
816
"""
445
817
connection.send(func(*args, **kwargs))
446
818
connection.close()
447
819
820
448
821
class Client(object):
449
822
"""A representation of a client host served by this server.
450
823
451
824
Attributes:
452
825
approved: bool(); 'None' if not yet approved/disapproved
453
826
approval_delay: datetime.timedelta(); Time to wait for approval
454
827
approval_duration: datetime.timedelta(); Duration of one approval
455
checker: subprocess.Popen(); a running checker process used
456
to see if the client lives.
457
'None' if no process is running.
458
checker_callback_tag: a gobject event source tag, or None
828
checker: multiprocessing.Process(); a running checker process used
829
to see if the client lives. 'None' if no process is
830
running.
831
checker_callback_tag: a GLib event source tag, or None
459
832
checker_command: string; External command which is run to check
460
833
if client lives. %() expansions are done at
461
834
runtime with vars(self) as dict, so that for
462
835
instance %(name)s can be used in the command.
463
checker_initiator_tag: a gobject event source tag, or None
836
checker_initiator_tag: a GLib event source tag, or None
464
837
created: datetime.datetime(); (UTC) object creation
465
838
client_structure: Object describing what attributes a client has
466
839
and is used for storing the client at exit
467
840
current_checker_command: string; current running checker_command
468
disable_initiator_tag: a gobject event source tag, or None
841
disable_initiator_tag: a GLib event source tag, or None
469
842
enabled: bool()
470
843
fingerprint: string (40 or 32 hexadecimal digits); used to
471
uniquely identify the client
844
uniquely identify an OpenPGP client
845
key_id: string (64 hexadecimal digits); used to uniquely identify
846
a client using raw public keys
472
847
host: string; available for use by the checker command
473
848
interval: datetime.timedelta(); How often to start a new checker
474
849
last_approval_request: datetime.datetime(); (UTC) or None
490
865
disabled, or None
491
866
server_settings: The server_settings dict from main()
492
867
"""
493
868
494
869
runtime_expansions = ("approval_delay", "approval_duration",
495
"created", "enabled", "expires",
870
"created", "enabled", "expires", "key_id",
496
871
"fingerprint", "host", "interval",
497
872
"last_approval_request", "last_checked_ok",
498
873
"last_enabled", "name", "timeout")
507
882
"approved_by_default": "True",
508
883
"enabled": "True",
509
884
}
510
885
511
886
@staticmethod
512
887
def config_parser(config):
513
888
"""Construct a new dict of client settings of this form:
520
895
for client_name in config.sections():
521
896
section = dict(config.items(client_name))
522
897
client = settings[client_name] = {}
523
898
524
899
client["host"] = section["host"]
525
900
# Reformat values from string types to Python types
526
901
client["approved_by_default"] = config.getboolean(
527
902
client_name, "approved_by_default")
528
903
client["enabled"] = config.getboolean(client_name,
529
904
"enabled")
530
531
# Uppercase and remove spaces from fingerprint for later
532
# comparison purposes with return value from the
533
# fingerprint() function
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(" ", ""))
534
911
client["fingerprint"] = (section["fingerprint"].upper()
535
912
.replace(" ", ""))
536
913
if "secret" in section:
537
client["secret"] = section["secret"].decode("base64")
914
client["secret"] = codecs.decode(section["secret"]
915
.encode("utf-8"),
916
"base64")
538
917
elif "secfile" in section:
539
918
with open(os.path.expanduser(os.path.expandvars
540
919
(section["secfile"])),
555
934
client["last_approval_request"] = None
556
935
client["last_checked_ok"] = None
557
936
client["last_checker_status"] = -2
558
937
559
938
return settings
560
561
def __init__(self, settings, name = None, server_settings=None):
939
940
def __init__(self, settings, name=None, server_settings=None):
562
941
self.name = name
563
942
if server_settings is None:
564
943
server_settings = {}
566
945
# adding all client settings
567
946
for setting, value in settings.items():
568
947
setattr(self, setting, value)
569
948
570
949
if self.enabled:
571
950
if not hasattr(self, "last_enabled"):
572
951
self.last_enabled = datetime.datetime.utcnow()
576
955
else:
577
956
self.last_enabled = None
578
957
self.expires = None
579
958
580
959
logger.debug("Creating client %r", self.name)
960
logger.debug(" Key ID: %s", self.key_id)
581
961
logger.debug(" Fingerprint: %s", self.fingerprint)
582
962
self.created = settings.get("created",
583
963
datetime.datetime.utcnow())
584
964
585
965
# attributes specific for this server instance
586
966
self.checker = None
587
967
self.checker_initiator_tag = None
593
973
self.changedstate = multiprocessing_manager.Condition(
594
974
multiprocessing_manager.Lock())
595
975
self.client_structure = [attr
596
for attr in self.__dict__.iterkeys()
976
for attr in self.__dict__.keys()
597
977
if not attr.startswith("_")]
598
978
self.client_structure.append("client_structure")
599
979
600
980
for name, t in inspect.getmembers(
601
981
type(self), lambda obj: isinstance(obj, property)):
602
982
if not name.startswith("_"):
603
983
self.client_structure.append(name)
604
984
605
985
# Send notice to process children that client state has changed
606
986
def send_changedstate(self):
607
987
with self.changedstate:
608
988
self.changedstate.notify_all()
609
989
610
990
def enable(self):
611
991
"""Start this client's checker and timeout hooks"""
612
992
if getattr(self, "enabled", False):
617
997
self.last_enabled = datetime.datetime.utcnow()
618
998
self.init_checker()
619
999
self.send_changedstate()
620
1000
621
1001
def disable(self, quiet=True):
622
1002
"""Disable this client."""
623
1003
if not getattr(self, "enabled", False):
625
1005
if not quiet:
626
1006
logger.info("Disabling client %s", self.name)
627
1007
if getattr(self, "disable_initiator_tag", None) is not None:
628
gobject.source_remove(self.disable_initiator_tag)
1008
GLib.source_remove(self.disable_initiator_tag)
629
1009
self.disable_initiator_tag = None
630
1010
self.expires = None
631
1011
if getattr(self, "checker_initiator_tag", None) is not None:
632
gobject.source_remove(self.checker_initiator_tag)
1012
GLib.source_remove(self.checker_initiator_tag)
633
1013
self.checker_initiator_tag = None
634
1014
self.stop_checker()
635
1015
self.enabled = False
636
1016
if not quiet:
637
1017
self.send_changedstate()
638
# Do not run this again if called by a gobject.timeout_add
1018
# Do not run this again if called by a GLib.timeout_add
639
1019
return False
640
1020
641
1021
def __del__(self):
642
1022
self.disable()
643
1023
644
1024
def init_checker(self):
645
1025
# Schedule a new checker to be started an 'interval' from now,
646
1026
# and every interval from then on.
647
1027
if self.checker_initiator_tag is not None:
648
gobject.source_remove(self.checker_initiator_tag)
649
self.checker_initiator_tag = gobject.timeout_add(
1028
GLib.source_remove(self.checker_initiator_tag)
1029
self.checker_initiator_tag = GLib.timeout_add(
650
1030
int(self.interval.total_seconds() * 1000),
651
1031
self.start_checker)
652
1032
# Schedule a disable() when 'timeout' has passed
653
1033
if self.disable_initiator_tag is not None:
654
gobject.source_remove(self.disable_initiator_tag)
655
self.disable_initiator_tag = gobject.timeout_add(
1034
GLib.source_remove(self.disable_initiator_tag)
1035
self.disable_initiator_tag = GLib.timeout_add(
656
1036
int(self.timeout.total_seconds() * 1000), self.disable)
657
1037
# Also start a new checker *right now*.
658
1038
self.start_checker()
659
1039
660
1040
def checker_callback(self, source, condition, connection,
661
1041
command):
662
1042
"""The checker has completed, so take appropriate actions."""
663
self.checker_callback_tag = None
664
self.checker = None
665
1043
# Read return code from connection (see call_pipe)
666
1044
returncode = connection.recv()
667
1045
connection.close()
668
1046
self.checker.join()
1047
self.checker_callback_tag = None
1048
self.checker = None
1049
669
1050
if returncode >= 0:
670
1051
self.last_checker_status = returncode
671
1052
self.last_checker_signal = None
681
1062
logger.warning("Checker for %(name)s crashed?",
682
1063
vars(self))
683
1064
return False
684
1065
685
1066
def checked_ok(self):
686
1067
"""Assert that the client has been seen, alive and well."""
687
1068
self.last_checked_ok = datetime.datetime.utcnow()
688
1069
self.last_checker_status = 0
689
1070
self.last_checker_signal = None
690
1071
self.bump_timeout()
691
1072
692
1073
def bump_timeout(self, timeout=None):
693
1074
"""Bump up the timeout for this client."""
694
1075
if timeout is None:
695
1076
timeout = self.timeout
696
1077
if self.disable_initiator_tag is not None:
697
gobject.source_remove(self.disable_initiator_tag)
1078
GLib.source_remove(self.disable_initiator_tag)
698
1079
self.disable_initiator_tag = None
699
1080
if getattr(self, "enabled", False):
700
self.disable_initiator_tag = gobject.timeout_add(
1081
self.disable_initiator_tag = GLib.timeout_add(
701
1082
int(timeout.total_seconds() * 1000), self.disable)
702
1083
self.expires = datetime.datetime.utcnow() + timeout
703
1084
704
1085
def need_approval(self):
705
1086
self.last_approval_request = datetime.datetime.utcnow()
706
1087
707
1088
def start_checker(self):
708
1089
"""Start a new checker subprocess if one is not running.
709
1090
710
1091
If a checker already exists, leave it running and do
711
1092
nothing."""
712
1093
# The reason for not killing a running checker is that if we
717
1098
# checkers alone, the checker would have to take more time
718
1099
# than 'timeout' for the client to be disabled, which is as it
719
1100
# should be.
720
1101
721
1102
if self.checker is not None and not self.checker.is_alive():
722
1103
logger.warning("Checker was not alive; joining")
723
1104
self.checker.join()
727
1108
# Escape attributes for the shell
728
1109
escaped_attrs = {
729
1110
attr: re.escape(str(getattr(self, attr)))
730
for attr in self.runtime_expansions }
1111
for attr in self.runtime_expansions}
731
1112
try:
732
1113
command = self.checker_command % escaped_attrs
733
1114
except TypeError as error:
745
1126
# The exception is when not debugging but nevertheless
746
1127
# running in the foreground; use the previously
747
1128
# created wnull.
748
popen_args = { "close_fds": True,
749
"shell": True,
750
"cwd": "/" }
1129
popen_args = {"close_fds": True,
1130
"shell": True,
1131
"cwd": "/"}
751
1132
if (not self.server_settings["debug"]
752
1133
and self.server_settings["foreground"]):
753
1134
popen_args.update({"stdout": wnull,
754
"stderr": wnull })
755
pipe = multiprocessing.Pipe(duplex = False)
1135
"stderr": wnull})
1136
pipe = multiprocessing.Pipe(duplex=False)
756
1137
self.checker = multiprocessing.Process(
757
target = call_pipe,
758
args = (pipe[1], subprocess.call, command),
759
kwargs = popen_args)
1138
target=call_pipe,
1139
args=(pipe[1], subprocess.call, command),
1140
kwargs=popen_args)
760
1141
self.checker.start()
761
self.checker_callback_tag = gobject.io_add_watch(
762
pipe[0].fileno(), gobject.IO_IN,
1142
self.checker_callback_tag = GLib.io_add_watch(
1143
pipe[0].fileno(), GLib.IO_IN,
763
1144
self.checker_callback, pipe[0], command)
764
# Re-run this periodically if run by gobject.timeout_add
1145
# Re-run this periodically if run by GLib.timeout_add
765
1146
return True
766
1147
767
1148
def stop_checker(self):
768
1149
"""Force the checker process, if any, to stop."""
769
1150
if self.checker_callback_tag:
770
gobject.source_remove(self.checker_callback_tag)
1151
GLib.source_remove(self.checker_callback_tag)
771
1152
self.checker_callback_tag = None
772
1153
if getattr(self, "checker", None) is None:
773
1154
return
782
1163
byte_arrays=False):
783
1164
"""Decorators for marking methods of a DBusObjectWithProperties to
784
1165
become properties on the D-Bus.
785
1166
786
1167
The decorated method will be called with no arguments by "Get"
787
1168
and with one argument by "Set".
788
1169
789
1170
The parameters, where they are supported, are the same as
790
1171
dbus.service.method, except there is only "signature", since the
791
1172
type from Get() and the type sent to Set() is the same.
795
1176
if byte_arrays and signature != "ay":
796
1177
raise ValueError("Byte arrays not supported for non-'ay'"
797
1178
" signature {!r}".format(signature))
798
1179
799
1180
def decorator(func):
800
1181
func._dbus_is_property = True
801
1182
func._dbus_interface = dbus_interface
804
1185
func._dbus_name = func.__name__
805
1186
if func._dbus_name.endswith("_dbus_property"):
806
1187
func._dbus_name = func._dbus_name[:-14]
807
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
1188
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
808
1189
return func
809
1190
810
1191
return decorator
811
1192
812
1193
813
1194
def dbus_interface_annotations(dbus_interface):
814
1195
"""Decorator for marking functions returning interface annotations
815
1196
816
1197
Usage:
817
1198
818
1199
@dbus_interface_annotations("org.example.Interface")
819
1200
def _foo(self): # Function name does not matter
820
1201
return {"org.freedesktop.DBus.Deprecated": "true",
821
1202
"org.freedesktop.DBus.Property.EmitsChangedSignal":
822
1203
"false"}
823
1204
"""
824
1205
825
1206
def decorator(func):
826
1207
func._dbus_is_interface = True
827
1208
func._dbus_interface = dbus_interface
828
1209
func._dbus_name = dbus_interface
829
1210
return func
830
1211
831
1212
return decorator
832
1213
833
1214
834
1215
def dbus_annotations(annotations):
835
1216
"""Decorator to annotate D-Bus methods, signals or properties
836
1217
Usage:
837
1218
838
1219
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
839
1220
"org.freedesktop.DBus.Property."
840
1221
"EmitsChangedSignal": "false"})
842
1223
access="r")
843
1224
def Property_dbus_property(self):
844
1225
return dbus.Boolean(False)
1226
1227
See also the DBusObjectWithAnnotations class.
845
1228
"""
846
1229
847
1230
def decorator(func):
848
1231
func._dbus_annotations = annotations
849
1232
return func
850
1233
851
1234
return decorator
852
1235
853
1236
869
1252
pass
870
1253
871
1254
872
class DBusObjectWithProperties(dbus.service.Object):
873
"""A D-Bus object with properties.
874
875
Classes inheriting from this can use the dbus_service_property
876
decorator to expose methods as D-Bus properties. It exposes the
877
standard Get(), Set(), and GetAll() methods on the D-Bus.
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.
878
1260
"""
879
1261
880
1262
@staticmethod
881
1263
def _is_dbus_thing(thing):
882
1264
"""Returns a function testing if an attribute is a D-Bus thing
883
1265
884
1266
If called like _is_dbus_thing("method") it returns a function
885
1267
suitable for use as predicate to inspect.getmembers().
886
1268
"""
887
1269
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
888
1270
False)
889
1271
890
1272
def _get_all_dbus_things(self, thing):
891
1273
"""Returns a generator of (name, attribute) pairs
892
1274
"""
895
1277
for cls in self.__class__.__mro__
896
1278
for name, athing in
897
1279
inspect.getmembers(cls, self._is_dbus_thing(thing)))
898
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):
1345
"""A D-Bus object with properties.
1346
1347
Classes inheriting from this can use the dbus_service_property
1348
decorator to expose methods as D-Bus properties. It exposes the
1349
standard Get(), Set(), and GetAll() methods on the D-Bus.
1350
"""
1351
899
1352
def _get_dbus_property(self, interface_name, property_name):
900
1353
"""Returns a bound method if one exists which is a D-Bus
901
1354
property with the specified name and interface.
906
1359
if (value._dbus_name == property_name
907
1360
and value._dbus_interface == interface_name):
908
1361
return value.__get__(self)
909
1362
910
1363
# No such property
911
1364
raise DBusPropertyNotFound("{}:{}.{}".format(
912
1365
self.dbus_object_path, interface_name, property_name))
913
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
914
1376
@dbus.service.method(dbus.PROPERTIES_IFACE,
915
1377
in_signature="ss",
916
1378
out_signature="v")
924
1386
if not hasattr(value, "variant_level"):
925
1387
return value
926
1388
return type(value)(value, variant_level=value.variant_level+1)
927
1389
928
1390
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
929
1391
def Set(self, interface_name, property_name, value):
930
1392
"""Standard D-Bus property Set() method, see D-Bus standard.
942
1404
value = dbus.ByteArray(b''.join(chr(byte)
943
1405
for byte in value))
944
1406
prop(value)
945
1407
946
1408
@dbus.service.method(dbus.PROPERTIES_IFACE,
947
1409
in_signature="s",
948
1410
out_signature="a{sv}")
949
1411
def GetAll(self, interface_name):
950
1412
"""Standard D-Bus property GetAll() method, see D-Bus
951
1413
standard.
952
1414
953
1415
Note: Will not include properties with access="write".
954
1416
"""
955
1417
properties = {}
966
1428
properties[name] = value
967
1429
continue
968
1430
properties[name] = type(value)(
969
value, variant_level = value.variant_level + 1)
1431
value, variant_level=value.variant_level + 1)
970
1432
return dbus.Dictionary(properties, signature="sv")
971
1433
972
1434
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
973
1435
def PropertiesChanged(self, interface_name, changed_properties,
974
1436
invalidated_properties):
976
1438
standard.
977
1439
"""
978
1440
pass
979
1441
980
1442
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
981
1443
out_signature="s",
982
1444
path_keyword='object_path',
983
1445
connection_keyword='connection')
984
1446
def Introspect(self, object_path, connection):
985
1447
"""Overloading of standard D-Bus method.
986
1448
987
1449
Inserts property tags and interface annotation tags.
988
1450
"""
989
xmlstring = dbus.service.Object.Introspect(self, object_path,
990
connection)
1451
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1452
object_path,
1453
connection)
991
1454
try:
992
1455
document = xml.dom.minidom.parseString(xmlstring)
993
1456
994
1457
def make_tag(document, name, prop):
995
1458
e = document.createElement("property")
996
1459
e.setAttribute("name", name)
997
1460
e.setAttribute("type", prop._dbus_signature)
998
1461
e.setAttribute("access", prop._dbus_access)
999
1462
return e
1000
1463
1001
1464
for if_tag in document.getElementsByTagName("interface"):
1002
1465
# Add property tags
1003
1466
for tag in (make_tag(document, name, prop)
1006
1469
if prop._dbus_interface
1007
1470
== if_tag.getAttribute("name")):
1008
1471
if_tag.appendChild(tag)
1009
# Add annotation tags
1010
for typ in ("method", "signal", "property"):
1011
for tag in if_tag.getElementsByTagName(typ):
1012
annots = dict()
1013
for name, prop in (self.
1014
_get_all_dbus_things(typ)):
1015
if (name == tag.getAttribute("name")
1016
and prop._dbus_interface
1017
== if_tag.getAttribute("name")):
1018
annots.update(getattr(
1019
prop, "_dbus_annotations", {}))
1020
for name, value in annots.items():
1021
ann_tag = document.createElement(
1022
"annotation")
1023
ann_tag.setAttribute("name", name)
1024
ann_tag.setAttribute("value", value)
1025
tag.appendChild(ann_tag)
1026
# Add interface annotation tags
1027
for annotation, value in dict(
1028
itertools.chain.from_iterable(
1029
annotations().items()
1030
for name, annotations
1031
in self._get_all_dbus_things("interface")
1032
if name == if_tag.getAttribute("name")
1033
)).items():
1034
ann_tag = document.createElement("annotation")
1035
ann_tag.setAttribute("name", annotation)
1036
ann_tag.setAttribute("value", value)
1037
if_tag.appendChild(ann_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)
1038
1488
# Add the names to the return values for the
1039
1489
# "org.freedesktop.DBus.Properties" methods
1040
1490
if (if_tag.getAttribute("name")
1059
1509
return xmlstring
1060
1510
1061
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
1062
1583
def datetime_to_dbus(dt, variant_level=0):
1063
1584
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1064
1585
if dt is None:
1065
return dbus.String("", variant_level = variant_level)
1586
return dbus.String("", variant_level=variant_level)
1066
1587
return dbus.String(dt.isoformat(), variant_level=variant_level)
1067
1588
1068
1589
1071
1592
dbus.service.Object, it will add alternate D-Bus attributes with
1072
1593
interface names according to the "alt_interface_names" mapping.
1073
1594
Usage:
1074
1595
1075
1596
@alternate_dbus_interfaces({"org.example.Interface":
1076
1597
"net.example.AlternateInterface"})
1077
1598
class SampleDBusObject(dbus.service.Object):
1078
1599
@dbus.service.method("org.example.Interface")
1079
1600
def SampleDBusMethod():
1080
1601
pass
1081
1602
1082
1603
The above "SampleDBusMethod" on "SampleDBusObject" will be
1083
1604
reachable via two interfaces: "org.example.Interface" and
1084
1605
"net.example.AlternateInterface", the latter of which will have
1085
1606
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1086
1607
"true", unless "deprecate" is passed with a False value.
1087
1608
1088
1609
This works for methods and signals, and also for D-Bus properties
1089
1610
(from DBusObjectWithProperties) and interfaces (from the
1090
1611
dbus_interface_annotations decorator).
1091
1612
"""
1092
1613
1093
1614
def wrapper(cls):
1094
1615
for orig_interface_name, alt_interface_name in (
1095
1616
alt_interface_names.items()):
1110
1631
interface_names.add(alt_interface)
1111
1632
# Is this a D-Bus signal?
1112
1633
if getattr(attribute, "_dbus_is_signal", False):
1634
# Extract the original non-method undecorated
1635
# function by black magic
1113
1636
if sys.version_info.major == 2:
1114
# Extract the original non-method undecorated
1115
# function by black magic
1116
1637
nonmethod_func = (dict(
1117
1638
zip(attribute.func_code.co_freevars,
1118
1639
attribute.__closure__))
1119
1640
["func"].cell_contents)
1120
1641
else:
1121
nonmethod_func = attribute
1642
nonmethod_func = (dict(
1643
zip(attribute.__code__.co_freevars,
1644
attribute.__closure__))
1645
["func"].cell_contents)
1122
1646
# Create a new, but exactly alike, function
1123
1647
# object, and decorate it to be a new D-Bus signal
1124
1648
# with the alternate D-Bus interface name
1125
if sys.version_info.major == 2:
1126
new_function = types.FunctionType(
1127
nonmethod_func.func_code,
1128
nonmethod_func.func_globals,
1129
nonmethod_func.func_name,
1130
nonmethod_func.func_defaults,
1131
nonmethod_func.func_closure)
1132
else:
1133
new_function = types.FunctionType(
1134
nonmethod_func.__code__,
1135
nonmethod_func.__globals__,
1136
nonmethod_func.__name__,
1137
nonmethod_func.__defaults__,
1138
nonmethod_func.__closure__)
1649
new_function = copy_function(nonmethod_func)
1139
1650
new_function = (dbus.service.signal(
1140
1651
alt_interface,
1141
1652
attribute._dbus_signature)(new_function))
1145
1656
attribute._dbus_annotations)
1146
1657
except AttributeError:
1147
1658
pass
1659
1148
1660
# Define a creator of a function to call both the
1149
1661
# original and alternate functions, so both the
1150
1662
# original and alternate signals gets sent when
1153
1665
"""This function is a scope container to pass
1154
1666
func1 and func2 to the "call_both" function
1155
1667
outside of its arguments"""
1156
1668
1669
@functools.wraps(func2)
1157
1670
def call_both(*args, **kwargs):
1158
1671
"""This function will emit two D-Bus
1159
1672
signals by calling func1 and func2"""
1160
1673
func1(*args, **kwargs)
1161
1674
func2(*args, **kwargs)
1162
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
1163
1681
return call_both
1164
1682
# Create the "call_both" function and add it to
1165
1683
# the class
1175
1693
alt_interface,
1176
1694
attribute._dbus_in_signature,
1177
1695
attribute._dbus_out_signature)
1178
(types.FunctionType(attribute.func_code,
1179
attribute.func_globals,
1180
attribute.func_name,
1181
attribute.func_defaults,
1182
attribute.func_closure)))
1696
(copy_function(attribute)))
1183
1697
# Copy annotations, if any
1184
1698
try:
1185
1699
attr[attrname]._dbus_annotations = dict(
1197
1711
attribute._dbus_access,
1198
1712
attribute._dbus_get_args_options
1199
1713
["byte_arrays"])
1200
(types.FunctionType(
1201
attribute.func_code,
1202
attribute.func_globals,
1203
attribute.func_name,
1204
attribute.func_defaults,
1205
attribute.func_closure)))
1714
(copy_function(attribute)))
1206
1715
# Copy annotations, if any
1207
1716
try:
1208
1717
attr[attrname]._dbus_annotations = dict(
1217
1726
# to the class.
1218
1727
attr[attrname] = (
1219
1728
dbus_interface_annotations(alt_interface)
1220
(types.FunctionType(attribute.func_code,
1221
attribute.func_globals,
1222
attribute.func_name,
1223
attribute.func_defaults,
1224
attribute.func_closure)))
1729
(copy_function(attribute)))
1225
1730
if deprecate:
1226
1731
# Deprecate all alternate interfaces
1227
iname="_AlternateDBusNames_interface_annotation{}"
1732
iname = "_AlternateDBusNames_interface_annotation{}"
1228
1733
for interface_name in interface_names:
1229
1734
1230
1735
@dbus_interface_annotations(interface_name)
1231
1736
def func(self):
1232
return { "org.freedesktop.DBus.Deprecated":
1233
"true" }
1737
return {"org.freedesktop.DBus.Deprecated":
1738
"true"}
1234
1739
# Find an unused name
1235
1740
for aname in (iname.format(i)
1236
1741
for i in itertools.count()):
1240
1745
if interface_names:
1241
1746
# Replace the class with a new subclass of it with
1242
1747
# methods, signals, etc. as created above.
1243
cls = type(b"{}Alternate".format(cls.__name__),
1244
(cls, ), attr)
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)
1245
1754
return cls
1246
1755
1247
1756
return wrapper
1248
1757
1249
1758
1251
1760
"se.bsnet.fukt.Mandos"})
1252
1761
class ClientDBus(Client, DBusObjectWithProperties):
1253
1762
"""A Client class using D-Bus
1254
1763
1255
1764
Attributes:
1256
1765
dbus_object_path: dbus.ObjectPath
1257
1766
bus: dbus.SystemBus()
1258
1767
"""
1259
1768
1260
1769
runtime_expansions = (Client.runtime_expansions
1261
1770
+ ("dbus_object_path", ))
1262
1771
1263
1772
_interface = "se.recompile.Mandos.Client"
1264
1773
1265
1774
# dbus.service.Object doesn't use super(), so we can't either.
1266
1267
def __init__(self, bus = None, *args, **kwargs):
1775
1776
def __init__(self, bus=None, *args, **kwargs):
1268
1777
self.bus = bus
1269
1778
Client.__init__(self, *args, **kwargs)
1270
1779
# Only now, when this client is initialized, can it show up on
1276
1785
"/clients/" + client_object_name)
1277
1786
DBusObjectWithProperties.__init__(self, self.bus,
1278
1787
self.dbus_object_path)
1279
1788
1280
1789
def notifychangeproperty(transform_func, dbus_name,
1281
1790
type_func=lambda x: x,
1282
1791
variant_level=1,
1284
1793
_interface=_interface):
1285
1794
""" Modify a variable so that it's a property which announces
1286
1795
its changes to DBus.
1287
1796
1288
1797
transform_fun: Function that takes a value and a variant_level
1289
1798
and transforms it to a D-Bus type.
1290
1799
dbus_name: D-Bus name of the variable
1293
1802
variant_level: D-Bus variant level. Default: 1
1294
1803
"""
1295
1804
attrname = "_{}".format(dbus_name)
1296
1805
1297
1806
def setter(self, value):
1298
1807
if hasattr(self, "dbus_object_path"):
1299
1808
if (not hasattr(self, attrname) or
1306
1815
else:
1307
1816
dbus_value = transform_func(
1308
1817
type_func(value),
1309
variant_level = variant_level)
1818
variant_level=variant_level)
1310
1819
self.PropertyChanged(dbus.String(dbus_name),
1311
1820
dbus_value)
1312
1821
self.PropertiesChanged(
1313
1822
_interface,
1314
dbus.Dictionary({ dbus.String(dbus_name):
1315
dbus_value }),
1823
dbus.Dictionary({dbus.String(dbus_name):
1824
dbus_value}),
1316
1825
dbus.Array())
1317
1826
setattr(self, attrname, value)
1318
1827
1319
1828
return property(lambda self: getattr(self, attrname), setter)
1320
1829
1321
1830
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1322
1831
approvals_pending = notifychangeproperty(dbus.Boolean,
1323
1832
"ApprovalPending",
1324
type_func = bool)
1833
type_func=bool)
1325
1834
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1326
1835
last_enabled = notifychangeproperty(datetime_to_dbus,
1327
1836
"LastEnabled")
1328
1837
checker = notifychangeproperty(
1329
1838
dbus.Boolean, "CheckerRunning",
1330
type_func = lambda checker: checker is not None)
1839
type_func=lambda checker: checker is not None)
1331
1840
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1332
1841
"LastCheckedOK")
1333
1842
last_checker_status = notifychangeproperty(dbus.Int16,
1338
1847
"ApprovedByDefault")
1339
1848
approval_delay = notifychangeproperty(
1340
1849
dbus.UInt64, "ApprovalDelay",
1341
type_func = lambda td: td.total_seconds() * 1000)
1850
type_func=lambda td: td.total_seconds() * 1000)
1342
1851
approval_duration = notifychangeproperty(
1343
1852
dbus.UInt64, "ApprovalDuration",
1344
type_func = lambda td: td.total_seconds() * 1000)
1853
type_func=lambda td: td.total_seconds() * 1000)
1345
1854
host = notifychangeproperty(dbus.String, "Host")
1346
1855
timeout = notifychangeproperty(
1347
1856
dbus.UInt64, "Timeout",
1348
type_func = lambda td: td.total_seconds() * 1000)
1857
type_func=lambda td: td.total_seconds() * 1000)
1349
1858
extended_timeout = notifychangeproperty(
1350
1859
dbus.UInt64, "ExtendedTimeout",
1351
type_func = lambda td: td.total_seconds() * 1000)
1860
type_func=lambda td: td.total_seconds() * 1000)
1352
1861
interval = notifychangeproperty(
1353
1862
dbus.UInt64, "Interval",
1354
type_func = lambda td: td.total_seconds() * 1000)
1863
type_func=lambda td: td.total_seconds() * 1000)
1355
1864
checker_command = notifychangeproperty(dbus.String, "Checker")
1356
1865
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1357
1866
invalidate_only=True)
1358
1867
1359
1868
del notifychangeproperty
1360
1869
1361
1870
def __del__(self, *args, **kwargs):
1362
1871
try:
1363
1872
self.remove_from_connection()
1366
1875
if hasattr(DBusObjectWithProperties, "__del__"):
1367
1876
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1368
1877
Client.__del__(self, *args, **kwargs)
1369
1878
1370
1879
def checker_callback(self, source, condition,
1371
1880
connection, command, *args, **kwargs):
1372
1881
ret = Client.checker_callback(self, source, condition,
1376
1885
if exitstatus >= 0:
1377
1886
# Emit D-Bus signal
1378
1887
self.CheckerCompleted(dbus.Int16(exitstatus),
1379
dbus.Int64(0),
1888
# This is specific to GNU libC
1889
dbus.Int64(exitstatus << 8),
1380
1890
dbus.String(command))
1381
1891
else:
1382
1892
# Emit D-Bus signal
1383
1893
self.CheckerCompleted(dbus.Int16(-1),
1384
1894
dbus.Int64(
1385
self.last_checker_signal),
1895
# This is specific to GNU libC
1896
(exitstatus << 8)
1897
| self.last_checker_signal),
1386
1898
dbus.String(command))
1387
1899
return ret
1388
1900
1389
1901
def start_checker(self, *args, **kwargs):
1390
1902
old_checker_pid = getattr(self.checker, "pid", None)
1391
1903
r = Client.start_checker(self, *args, **kwargs)
1395
1907
# Emit D-Bus signal
1396
1908
self.CheckerStarted(self.current_checker_command)
1397
1909
return r
1398
1910
1399
1911
def _reset_approved(self):
1400
1912
self.approved = None
1401
1913
return False
1402
1914
1403
1915
def approve(self, value=True):
1404
1916
self.approved = value
1405
gobject.timeout_add(int(self.approval_duration.total_seconds()
1406
* 1000), self._reset_approved)
1917
GLib.timeout_add(int(self.approval_duration.total_seconds()
1918
* 1000), self._reset_approved)
1407
1919
self.send_changedstate()
1408
1409
## D-Bus methods, signals & properties
1410
1411
## Interfaces
1412
1413
## Signals
1414
1920
1921
# D-Bus methods, signals & properties
1922
1923
# Interfaces
1924
1925
# Signals
1926
1415
1927
# CheckerCompleted - signal
1416
1928
@dbus.service.signal(_interface, signature="nxs")
1417
1929
def CheckerCompleted(self, exitcode, waitstatus, command):
1418
1930
"D-Bus signal"
1419
1931
pass
1420
1932
1421
1933
# CheckerStarted - signal
1422
1934
@dbus.service.signal(_interface, signature="s")
1423
1935
def CheckerStarted(self, command):
1424
1936
"D-Bus signal"
1425
1937
pass
1426
1938
1427
1939
# PropertyChanged - signal
1428
1940
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1429
1941
@dbus.service.signal(_interface, signature="sv")
1430
1942
def PropertyChanged(self, property, value):
1431
1943
"D-Bus signal"
1432
1944
pass
1433
1945
1434
1946
# GotSecret - signal
1435
1947
@dbus.service.signal(_interface)
1436
1948
def GotSecret(self):
1439
1951
server to mandos-client
1440
1952
"""
1441
1953
pass
1442
1954
1443
1955
# Rejected - signal
1444
1956
@dbus.service.signal(_interface, signature="s")
1445
1957
def Rejected(self, reason):
1446
1958
"D-Bus signal"
1447
1959
pass
1448
1960
1449
1961
# NeedApproval - signal
1450
1962
@dbus.service.signal(_interface, signature="tb")
1451
1963
def NeedApproval(self, timeout, default):
1452
1964
"D-Bus signal"
1453
1965
return self.need_approval()
1454
1455
## Methods
1456
1966
1967
# Methods
1968
1457
1969
# Approve - method
1458
1970
@dbus.service.method(_interface, in_signature="b")
1459
1971
def Approve(self, value):
1460
1972
self.approve(value)
1461
1973
1462
1974
# CheckedOK - method
1463
1975
@dbus.service.method(_interface)
1464
1976
def CheckedOK(self):
1465
1977
self.checked_ok()
1466
1978
1467
1979
# Enable - method
1980
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1468
1981
@dbus.service.method(_interface)
1469
1982
def Enable(self):
1470
1983
"D-Bus method"
1471
1984
self.enable()
1472
1985
1473
1986
# StartChecker - method
1987
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1474
1988
@dbus.service.method(_interface)
1475
1989
def StartChecker(self):
1476
1990
"D-Bus method"
1477
1991
self.start_checker()
1478
1992
1479
1993
# Disable - method
1994
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1480
1995
@dbus.service.method(_interface)
1481
1996
def Disable(self):
1482
1997
"D-Bus method"
1483
1998
self.disable()
1484
1999
1485
2000
# StopChecker - method
2001
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1486
2002
@dbus.service.method(_interface)
1487
2003
def StopChecker(self):
1488
2004
self.stop_checker()
1489
1490
## Properties
1491
2005
2006
# Properties
2007
1492
2008
# ApprovalPending - property
1493
2009
@dbus_service_property(_interface, signature="b", access="read")
1494
2010
def ApprovalPending_dbus_property(self):
1495
2011
return dbus.Boolean(bool(self.approvals_pending))
1496
2012
1497
2013
# ApprovedByDefault - property
1498
2014
@dbus_service_property(_interface,
1499
2015
signature="b",
1502
2018
if value is None: # get
1503
2019
return dbus.Boolean(self.approved_by_default)
1504
2020
self.approved_by_default = bool(value)
1505
2021
1506
2022
# ApprovalDelay - property
1507
2023
@dbus_service_property(_interface,
1508
2024
signature="t",
1512
2028
return dbus.UInt64(self.approval_delay.total_seconds()
1513
2029
* 1000)
1514
2030
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1515
2031
1516
2032
# ApprovalDuration - property
1517
2033
@dbus_service_property(_interface,
1518
2034
signature="t",
1522
2038
return dbus.UInt64(self.approval_duration.total_seconds()
1523
2039
* 1000)
1524
2040
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1525
2041
1526
2042
# Name - property
2043
@dbus_annotations(
2044
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1527
2045
@dbus_service_property(_interface, signature="s", access="read")
1528
2046
def Name_dbus_property(self):
1529
2047
return dbus.String(self.name)
1530
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
1531
2056
# Fingerprint - property
2057
@dbus_annotations(
2058
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1532
2059
@dbus_service_property(_interface, signature="s", access="read")
1533
2060
def Fingerprint_dbus_property(self):
1534
2061
return dbus.String(self.fingerprint)
1535
2062
1536
2063
# Host - property
1537
2064
@dbus_service_property(_interface,
1538
2065
signature="s",
1541
2068
if value is None: # get
1542
2069
return dbus.String(self.host)
1543
2070
self.host = str(value)
1544
2071
1545
2072
# Created - property
2073
@dbus_annotations(
2074
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1546
2075
@dbus_service_property(_interface, signature="s", access="read")
1547
2076
def Created_dbus_property(self):
1548
2077
return datetime_to_dbus(self.created)
1549
2078
1550
2079
# LastEnabled - property
1551
2080
@dbus_service_property(_interface, signature="s", access="read")
1552
2081
def LastEnabled_dbus_property(self):
1553
2082
return datetime_to_dbus(self.last_enabled)
1554
2083
1555
2084
# Enabled - property
1556
2085
@dbus_service_property(_interface,
1557
2086
signature="b",
1563
2092
self.enable()
1564
2093
else:
1565
2094
self.disable()
1566
2095
1567
2096
# LastCheckedOK - property
1568
2097
@dbus_service_property(_interface,
1569
2098
signature="s",
1573
2102
self.checked_ok()
1574
2103
return
1575
2104
return datetime_to_dbus(self.last_checked_ok)
1576
2105
1577
2106
# LastCheckerStatus - property
1578
2107
@dbus_service_property(_interface, signature="n", access="read")
1579
2108
def LastCheckerStatus_dbus_property(self):
1580
2109
return dbus.Int16(self.last_checker_status)
1581
2110
1582
2111
# Expires - property
1583
2112
@dbus_service_property(_interface, signature="s", access="read")
1584
2113
def Expires_dbus_property(self):
1585
2114
return datetime_to_dbus(self.expires)
1586
2115
1587
2116
# LastApprovalRequest - property
1588
2117
@dbus_service_property(_interface, signature="s", access="read")
1589
2118
def LastApprovalRequest_dbus_property(self):
1590
2119
return datetime_to_dbus(self.last_approval_request)
1591
2120
1592
2121
# Timeout - property
1593
2122
@dbus_service_property(_interface,
1594
2123
signature="t",
1609
2138
if (getattr(self, "disable_initiator_tag", None)
1610
2139
is None):
1611
2140
return
1612
gobject.source_remove(self.disable_initiator_tag)
1613
self.disable_initiator_tag = gobject.timeout_add(
2141
GLib.source_remove(self.disable_initiator_tag)
2142
self.disable_initiator_tag = GLib.timeout_add(
1614
2143
int((self.expires - now).total_seconds() * 1000),
1615
2144
self.disable)
1616
2145
1617
2146
# ExtendedTimeout - property
1618
2147
@dbus_service_property(_interface,
1619
2148
signature="t",
1623
2152
return dbus.UInt64(self.extended_timeout.total_seconds()
1624
2153
* 1000)
1625
2154
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1626
2155
1627
2156
# Interval - property
1628
2157
@dbus_service_property(_interface,
1629
2158
signature="t",
1636
2165
return
1637
2166
if self.enabled:
1638
2167
# Reschedule checker run
1639
gobject.source_remove(self.checker_initiator_tag)
1640
self.checker_initiator_tag = gobject.timeout_add(
2168
GLib.source_remove(self.checker_initiator_tag)
2169
self.checker_initiator_tag = GLib.timeout_add(
1641
2170
value, self.start_checker)
1642
self.start_checker() # Start one now, too
1643
2171
self.start_checker() # Start one now, too
2172
1644
2173
# Checker - property
1645
2174
@dbus_service_property(_interface,
1646
2175
signature="s",
1649
2178
if value is None: # get
1650
2179
return dbus.String(self.checker_command)
1651
2180
self.checker_command = str(value)
1652
2181
1653
2182
# CheckerRunning - property
1654
2183
@dbus_service_property(_interface,
1655
2184
signature="b",
1661
2190
self.start_checker()
1662
2191
else:
1663
2192
self.stop_checker()
1664
2193
1665
2194
# ObjectPath - property
2195
@dbus_annotations(
2196
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2197
"org.freedesktop.DBus.Deprecated": "true"})
1666
2198
@dbus_service_property(_interface, signature="o", access="read")
1667
2199
def ObjectPath_dbus_property(self):
1668
return self.dbus_object_path # is already a dbus.ObjectPath
1669
2200
return self.dbus_object_path # is already a dbus.ObjectPath
2201
1670
2202
# Secret = property
2203
@dbus_annotations(
2204
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2205
"invalidates"})
1671
2206
@dbus_service_property(_interface,
1672
2207
signature="ay",
1673
2208
access="write",
1674
2209
byte_arrays=True)
1675
2210
def Secret_dbus_property(self, value):
1676
2211
self.secret = bytes(value)
1677
2212
1678
2213
del _interface
1679
2214
1680
2215
1681
2216
class ProxyClient(object):
1682
def __init__(self, child_pipe, fpr, address):
2217
def __init__(self, child_pipe, key_id, fpr, address):
1683
2218
self._pipe = child_pipe
1684
self._pipe.send(('init', fpr, address))
2219
self._pipe.send(('init', key_id, fpr, address))
1685
2220
if not self._pipe.recv():
1686
raise KeyError(fpr)
1687
2221
raise KeyError(key_id or fpr)
2222
1688
2223
def __getattribute__(self, name):
1689
2224
if name == '_pipe':
1690
2225
return super(ProxyClient, self).__getattribute__(name)
1693
2228
if data[0] == 'data':
1694
2229
return data[1]
1695
2230
if data[0] == 'function':
1696
2231
1697
2232
def func(*args, **kwargs):
1698
2233
self._pipe.send(('funcall', name, args, kwargs))
1699
2234
return self._pipe.recv()[1]
1700
2235
1701
2236
return func
1702
2237
1703
2238
def __setattr__(self, name, value):
1704
2239
if name == '_pipe':
1705
2240
return super(ProxyClient, self).__setattr__(name, value)
1708
2243
1709
2244
class ClientHandler(socketserver.BaseRequestHandler, object):
1710
2245
"""A class to handle client connections.
1711
2246
1712
2247
Instantiated once for each connection to handle it.
1713
2248
Note: This will run in its own forked process."""
1714
2249
1715
2250
def handle(self):
1716
2251
with contextlib.closing(self.server.child_pipe) as child_pipe:
1717
2252
logger.info("TCP connection from: %s",
1718
2253
str(self.client_address))
1719
2254
logger.debug("Pipe FD: %d",
1720
2255
self.server.child_pipe.fileno())
1721
1722
session = gnutls.connection.ClientSession(
1723
self.request, gnutls.connection .X509Credentials())
1724
1725
# Note: gnutls.connection.X509Credentials is really a
1726
# generic GnuTLS certificate credentials object so long as
1727
# no X.509 keys are added to it. Therefore, we can use it
1728
# here despite using OpenPGP certificates.
1729
1730
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1731
# "+AES-256-CBC", "+SHA1",
1732
# "+COMP-NULL", "+CTYPE-OPENPGP",
1733
# "+DHE-DSS"))
2256
2257
session = gnutls.ClientSession(self.request)
2258
2259
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2260
# "+AES-256-CBC", "+SHA1",
2261
# "+COMP-NULL", "+CTYPE-OPENPGP",
2262
# "+DHE-DSS"))
1734
2263
# Use a fallback default, since this MUST be set.
1735
2264
priority = self.server.gnutls_priority
1736
2265
if priority is None:
1737
2266
priority = "NORMAL"
1738
gnutls.library.functions.gnutls_priority_set_direct(
1739
session._c_object, priority, None)
1740
2267
gnutls.priority_set_direct(session._c_object,
2268
priority.encode("utf-8"),
2269
None)
2270
1741
2271
# Start communication using the Mandos protocol
1742
2272
# Get protocol number
1743
2273
line = self.request.makefile().readline()
1748
2278
except (ValueError, IndexError, RuntimeError) as error:
1749
2279
logger.error("Unknown protocol version: %s", error)
1750
2280
return
1751
2281
1752
2282
# Start GnuTLS connection
1753
2283
try:
1754
2284
session.handshake()
1755
except gnutls.errors.GNUTLSError as error:
2285
except gnutls.Error as error:
1756
2286
logger.warning("Handshake failed: %s", error)
1757
2287
# Do not run session.bye() here: the session is not
1758
2288
# established. Just abandon the request.
1759
2289
return
1760
2290
logger.debug("Handshake succeeded")
1761
2291
1762
2292
approval_required = False
1763
2293
try:
1764
try:
1765
fpr = self.fingerprint(
1766
self.peer_certificate(session))
1767
except (TypeError,
1768
gnutls.errors.GNUTLSError) as error:
1769
logger.warning("Bad certificate: %s", error)
1770
return
1771
logger.debug("Fingerprint: %s", fpr)
1772
1773
try:
1774
client = ProxyClient(child_pipe, fpr,
2294
if gnutls.has_rawpk:
2295
fpr = b""
2296
try:
2297
key_id = self.key_id(
2298
self.peer_certificate(session))
2299
except (TypeError, gnutls.Error) as error:
2300
logger.warning("Bad certificate: %s", error)
2301
return
2302
logger.debug("Key ID: %s", key_id)
2303
2304
else:
2305
key_id = b""
2306
try:
2307
fpr = self.fingerprint(
2308
self.peer_certificate(session))
2309
except (TypeError, gnutls.Error) as error:
2310
logger.warning("Bad certificate: %s", error)
2311
return
2312
logger.debug("Fingerprint: %s", fpr)
2313
2314
try:
2315
client = ProxyClient(child_pipe, key_id, fpr,
1775
2316
self.client_address)
1776
2317
except KeyError:
1777
2318
return
1778
2319
1779
2320
if client.approval_delay:
1780
2321
delay = client.approval_delay
1781
2322
client.approvals_pending += 1
1782
2323
approval_required = True
1783
2324
1784
2325
while True:
1785
2326
if not client.enabled:
1786
2327
logger.info("Client %s is disabled",
1789
2330
# Emit D-Bus signal
1790
2331
client.Rejected("Disabled")
1791
2332
return
1792
2333
1793
2334
if client.approved or not client.approval_delay:
1794
#We are approved or approval is disabled
2335
# We are approved or approval is disabled
1795
2336
break
1796
2337
elif client.approved is None:
1797
2338
logger.info("Client %s needs approval",
1808
2349
# Emit D-Bus signal
1809
2350
client.Rejected("Denied")
1810
2351
return
1811
1812
#wait until timeout or approved
2352
2353
# wait until timeout or approved
1813
2354
time = datetime.datetime.now()
1814
2355
client.changedstate.acquire()
1815
2356
client.changedstate.wait(delay.total_seconds())
1828
2369
break
1829
2370
else:
1830
2371
delay -= time2 - time
1831
1832
sent_size = 0
1833
while sent_size < len(client.secret):
1834
try:
1835
sent = session.send(client.secret[sent_size:])
1836
except gnutls.errors.GNUTLSError as error:
1837
logger.warning("gnutls send failed",
1838
exc_info=error)
1839
return
1840
logger.debug("Sent: %d, remaining: %d", sent,
1841
len(client.secret) - (sent_size
1842
+ sent))
1843
sent_size += sent
1844
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
1845
2380
logger.info("Sending secret to %s", client.name)
1846
2381
# bump the timeout using extended_timeout
1847
2382
client.bump_timeout(client.extended_timeout)
1848
2383
if self.server.use_dbus:
1849
2384
# Emit D-Bus signal
1850
2385
client.GotSecret()
1851
2386
1852
2387
finally:
1853
2388
if approval_required:
1854
2389
client.approvals_pending -= 1
1855
2390
try:
1856
2391
session.bye()
1857
except gnutls.errors.GNUTLSError as error:
2392
except gnutls.Error as error:
1858
2393
logger.warning("GnuTLS bye failed",
1859
2394
exc_info=error)
1860
2395
1861
2396
@staticmethod
1862
2397
def peer_certificate(session):
1863
"Return the peer's OpenPGP certificate as a bytestring"
1864
# If not an OpenPGP certificate...
1865
if (gnutls.library.functions.gnutls_certificate_type_get(
1866
session._c_object)
1867
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1868
# ...do the normal thing
1869
return session.peer_certificate
2398
"Return the peer's certificate as a bytestring"
2399
try:
2400
cert_type = gnutls.certificate_type_get2(session._c_object,
2401
gnutls.CTYPE_PEERS)
2402
except AttributeError:
2403
cert_type = gnutls.certificate_type_get(session._c_object)
2404
if gnutls.has_rawpk:
2405
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2406
else:
2407
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2408
# If not a valid certificate type...
2409
if cert_type not in valid_cert_types:
2410
logger.info("Cert type %r not in %r", cert_type,
2411
valid_cert_types)
2412
# ...return invalid data
2413
return b""
1870
2414
list_size = ctypes.c_uint(1)
1871
cert_list = (gnutls.library.functions
1872
.gnutls_certificate_get_peers
2415
cert_list = (gnutls.certificate_get_peers
1873
2416
(session._c_object, ctypes.byref(list_size)))
1874
2417
if not bool(cert_list) and list_size.value != 0:
1875
raise gnutls.errors.GNUTLSError("error getting peer"
1876
" certificate")
2418
raise gnutls.Error("error getting peer certificate")
1877
2419
if list_size.value == 0:
1878
2420
return None
1879
2421
cert = cert_list[0]
1880
2422
return ctypes.string_at(cert.data, cert.size)
1881
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
1882
2458
@staticmethod
1883
2459
def fingerprint(openpgp):
1884
2460
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1885
2461
# New GnuTLS "datum" with the OpenPGP public key
1886
datum = gnutls.library.types.gnutls_datum_t(
2462
datum = gnutls.datum_t(
1887
2463
ctypes.cast(ctypes.c_char_p(openpgp),
1888
2464
ctypes.POINTER(ctypes.c_ubyte)),
1889
2465
ctypes.c_uint(len(openpgp)))
1890
2466
# New empty GnuTLS certificate
1891
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1892
gnutls.library.functions.gnutls_openpgp_crt_init(
1893
ctypes.byref(crt))
2467
crt = gnutls.openpgp_crt_t()
2468
gnutls.openpgp_crt_init(ctypes.byref(crt))
1894
2469
# Import the OpenPGP public key into the certificate
1895
gnutls.library.functions.gnutls_openpgp_crt_import(
1896
crt, ctypes.byref(datum),
1897
gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)
2470
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2471
gnutls.OPENPGP_FMT_RAW)
1898
2472
# Verify the self signature in the key
1899
2473
crtverify = ctypes.c_uint()
1900
gnutls.library.functions.gnutls_openpgp_crt_verify_self(
1901
crt, 0, ctypes.byref(crtverify))
2474
gnutls.openpgp_crt_verify_self(crt, 0,
2475
ctypes.byref(crtverify))
1902
2476
if crtverify.value != 0:
1903
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1904
raise gnutls.errors.CertificateSecurityError(
1905
"Verify failed")
2477
gnutls.openpgp_crt_deinit(crt)
2478
raise gnutls.CertificateSecurityError(code
2479
=crtverify.value)
1906
2480
# New buffer for the fingerprint
1907
2481
buf = ctypes.create_string_buffer(20)
1908
2482
buf_len = ctypes.c_size_t()
1909
2483
# Get the fingerprint from the certificate into the buffer
1910
gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint(
1911
crt, ctypes.byref(buf), ctypes.byref(buf_len))
2484
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2485
ctypes.byref(buf_len))
1912
2486
# Deinit the certificate
1913
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2487
gnutls.openpgp_crt_deinit(crt)
1914
2488
# Convert the buffer to a Python bytestring
1915
2489
fpr = ctypes.string_at(buf, buf_len.value)
1916
2490
# Convert the bytestring to hexadecimal notation
1920
2494
1921
2495
class MultiprocessingMixIn(object):
1922
2496
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
1923
2497
1924
2498
def sub_process_main(self, request, address):
1925
2499
try:
1926
2500
self.finish_request(request, address)
1927
2501
except Exception:
1928
2502
self.handle_error(request, address)
1929
2503
self.close_request(request)
1930
2504
1931
2505
def process_request(self, request, address):
1932
2506
"""Start a new process to process the request."""
1933
proc = multiprocessing.Process(target = self.sub_process_main,
1934
args = (request, address))
2507
proc = multiprocessing.Process(target=self.sub_process_main,
2508
args=(request, address))
1935
2509
proc.start()
1936
2510
return proc
1937
2511
1938
2512
1939
2513
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1940
2514
""" adds a pipe to the MixIn """
1941
2515
1942
2516
def process_request(self, request, client_address):
1943
2517
"""Overrides and wraps the original process_request().
1944
2518
1945
2519
This function creates a new pipe in self.pipe
1946
2520
"""
1947
2521
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1948
2522
1949
2523
proc = MultiprocessingMixIn.process_request(self, request,
1950
2524
client_address)
1951
2525
self.child_pipe.close()
1952
2526
self.add_pipe(parent_pipe, proc)
1953
2527
1954
2528
def add_pipe(self, parent_pipe, proc):
1955
2529
"""Dummy function; override as necessary"""
1956
2530
raise NotImplementedError()
1959
2533
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1960
2534
socketserver.TCPServer, object):
1961
2535
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1962
2536
1963
2537
Attributes:
1964
2538
enabled: Boolean; whether this server is activated yet
1965
2539
interface: None or a network interface name (string)
1966
2540
use_ipv6: Boolean; to use IPv6 or not
1967
2541
"""
1968
2542
1969
2543
def __init__(self, server_address, RequestHandlerClass,
1970
2544
interface=None,
1971
2545
use_ipv6=True,
1981
2555
self.socketfd = socketfd
1982
2556
# Save the original socket.socket() function
1983
2557
self.socket_socket = socket.socket
2558
1984
2559
# To implement --socket, we monkey patch socket.socket.
1985
#
2560
#
1986
2561
# (When socketserver.TCPServer is a new-style class, we
1987
2562
# could make self.socket into a property instead of monkey
1988
2563
# patching socket.socket.)
1989
#
2564
#
1990
2565
# Create a one-time-only replacement for socket.socket()
1991
2566
@functools.wraps(socket.socket)
1992
2567
def socket_wrapper(*args, **kwargs):
2004
2579
# socket_wrapper(), if socketfd was set.
2005
2580
socketserver.TCPServer.__init__(self, server_address,
2006
2581
RequestHandlerClass)
2007
2582
2008
2583
def server_bind(self):
2009
2584
"""This overrides the normal server_bind() function
2010
2585
to bind to an interface if one was specified, and also NOT to
2011
2586
bind to an address or port if they were not specified."""
2587
global SO_BINDTODEVICE
2012
2588
if self.interface is not None:
2013
2589
if SO_BINDTODEVICE is None:
2014
logger.error("SO_BINDTODEVICE does not exist;"
2015
" cannot bind to interface %s",
2016
self.interface)
2017
else:
2018
try:
2019
self.socket.setsockopt(
2020
socket.SOL_SOCKET, SO_BINDTODEVICE,
2021
(self.interface + "\0").encode("utf-8"))
2022
except socket.error as error:
2023
if error.errno == errno.EPERM:
2024
logger.error("No permission to bind to"
2025
" interface %s", self.interface)
2026
elif error.errno == errno.ENOPROTOOPT:
2027
logger.error("SO_BINDTODEVICE not available;"
2028
" cannot bind to interface %s",
2029
self.interface)
2030
elif error.errno == errno.ENODEV:
2031
logger.error("Interface %s does not exist,"
2032
" cannot bind", self.interface)
2033
else:
2034
raise
2590
# Fall back to a hard-coded value which seems to be
2591
# common enough.
2592
logger.warning("SO_BINDTODEVICE not found, trying 25")
2593
SO_BINDTODEVICE = 25
2594
try:
2595
self.socket.setsockopt(
2596
socket.SOL_SOCKET, SO_BINDTODEVICE,
2597
(self.interface + "\0").encode("utf-8"))
2598
except socket.error as error:
2599
if error.errno == errno.EPERM:
2600
logger.error("No permission to bind to"
2601
" interface %s", self.interface)
2602
elif error.errno == errno.ENOPROTOOPT:
2603
logger.error("SO_BINDTODEVICE not available;"
2604
" cannot bind to interface %s",
2605
self.interface)
2606
elif error.errno == errno.ENODEV:
2607
logger.error("Interface %s does not exist,"
2608
" cannot bind", self.interface)
2609
else:
2610
raise
2035
2611
# Only bind(2) the socket if we really need to.
2036
2612
if self.server_address[0] or self.server_address[1]:
2613
if self.server_address[1]:
2614
self.allow_reuse_address = True
2037
2615
if not self.server_address[0]:
2038
2616
if self.address_family == socket.AF_INET6:
2039
any_address = "::" # in6addr_any
2617
any_address = "::" # in6addr_any
2040
2618
else:
2041
any_address = "0.0.0.0" # INADDR_ANY
2619
any_address = "0.0.0.0" # INADDR_ANY
2042
2620
self.server_address = (any_address,
2043
2621
self.server_address[1])
2044
2622
elif not self.server_address[1]:
2054
2632
2055
2633
class MandosServer(IPv6_TCPServer):
2056
2634
"""Mandos server.
2057
2635
2058
2636
Attributes:
2059
2637
clients: set of Client objects
2060
2638
gnutls_priority GnuTLS priority string
2061
2639
use_dbus: Boolean; to emit D-Bus signals or not
2062
2063
Assumes a gobject.MainLoop event loop.
2640
2641
Assumes a GLib.MainLoop event loop.
2064
2642
"""
2065
2643
2066
2644
def __init__(self, server_address, RequestHandlerClass,
2067
2645
interface=None,
2068
2646
use_ipv6=True,
2078
2656
self.gnutls_priority = gnutls_priority
2079
2657
IPv6_TCPServer.__init__(self, server_address,
2080
2658
RequestHandlerClass,
2081
interface = interface,
2082
use_ipv6 = use_ipv6,
2083
socketfd = socketfd)
2084
2659
interface=interface,
2660
use_ipv6=use_ipv6,
2661
socketfd=socketfd)
2662
2085
2663
def server_activate(self):
2086
2664
if self.enabled:
2087
2665
return socketserver.TCPServer.server_activate(self)
2088
2666
2089
2667
def enable(self):
2090
2668
self.enabled = True
2091
2669
2092
2670
def add_pipe(self, parent_pipe, proc):
2093
2671
# Call "handle_ipc" for both data and EOF events
2094
gobject.io_add_watch(
2672
GLib.io_add_watch(
2095
2673
parent_pipe.fileno(),
2096
gobject.IO_IN | gobject.IO_HUP,
2674
GLib.IO_IN | GLib.IO_HUP,
2097
2675
functools.partial(self.handle_ipc,
2098
parent_pipe = parent_pipe,
2099
proc = proc))
2100
2676
parent_pipe=parent_pipe,
2677
proc=proc))
2678
2101
2679
def handle_ipc(self, source, condition,
2102
2680
parent_pipe=None,
2103
proc = None,
2681
proc=None,
2104
2682
client_object=None):
2105
2683
# error, or the other end of multiprocessing.Pipe has closed
2106
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2684
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2107
2685
# Wait for other process to exit
2108
2686
proc.join()
2109
2687
return False
2110
2688
2111
2689
# Read a request from the child
2112
2690
request = parent_pipe.recv()
2113
2691
command = request[0]
2114
2692
2115
2693
if command == 'init':
2116
fpr = request[1]
2117
address = request[2]
2118
2119
for c in self.clients.itervalues():
2120
if c.fingerprint == fpr:
2694
key_id = request[1].decode("ascii")
2695
fpr = request[2].decode("ascii")
2696
address = request[3]
2697
2698
for c in self.clients.values():
2699
if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2700
continue
2701
if key_id and c.key_id == key_id:
2702
client = c
2703
break
2704
if fpr and c.fingerprint == fpr:
2121
2705
client = c
2122
2706
break
2123
2707
else:
2124
logger.info("Client not found for fingerprint: %s, ad"
2125
"dress: %s", fpr, address)
2708
logger.info("Client not found for key ID: %s, address"
2709
": %s", key_id or fpr, address)
2126
2710
if self.use_dbus:
2127
2711
# Emit D-Bus signal
2128
mandos_dbus_service.ClientNotFound(fpr,
2712
mandos_dbus_service.ClientNotFound(key_id or fpr,
2129
2713
address[0])
2130
2714
parent_pipe.send(False)
2131
2715
return False
2132
2133
gobject.io_add_watch(
2716
2717
GLib.io_add_watch(
2134
2718
parent_pipe.fileno(),
2135
gobject.IO_IN | gobject.IO_HUP,
2719
GLib.IO_IN | GLib.IO_HUP,
2136
2720
functools.partial(self.handle_ipc,
2137
parent_pipe = parent_pipe,
2138
proc = proc,
2139
client_object = client))
2721
parent_pipe=parent_pipe,
2722
proc=proc,
2723
client_object=client))
2140
2724
parent_pipe.send(True)
2141
2725
# remove the old hook in favor of the new above hook on
2142
2726
# same fileno
2145
2729
funcname = request[1]
2146
2730
args = request[2]
2147
2731
kwargs = request[3]
2148
2732
2149
2733
parent_pipe.send(('data', getattr(client_object,
2150
2734
funcname)(*args,
2151
2735
**kwargs)))
2152
2736
2153
2737
if command == 'getattr':
2154
2738
attrname = request[1]
2155
2739
if isinstance(client_object.__getattribute__(attrname),
2158
2742
else:
2159
2743
parent_pipe.send((
2160
2744
'data', client_object.__getattribute__(attrname)))
2161
2745
2162
2746
if command == 'setattr':
2163
2747
attrname = request[1]
2164
2748
value = request[2]
2165
2749
setattr(client_object, attrname, value)
2166
2750
2167
2751
return True
2168
2752
2169
2753
2170
2754
def rfc3339_duration_to_delta(duration):
2171
2755
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2172
2756
2173
2757
>>> rfc3339_duration_to_delta("P7D")
2174
2758
datetime.timedelta(7)
2175
2759
>>> rfc3339_duration_to_delta("PT60S")
2185
2769
>>> rfc3339_duration_to_delta("P1DT3M20S")
2186
2770
datetime.timedelta(1, 200)
2187
2771
"""
2188
2772
2189
2773
# Parsing an RFC 3339 duration with regular expressions is not
2190
2774
# possible - there would have to be multiple places for the same
2191
2775
# values, like seconds. The current code, while more esoteric, is
2192
2776
# cleaner without depending on a parsing library. If Python had a
2193
2777
# built-in library for parsing we would use it, but we'd like to
2194
2778
# avoid excessive use of external libraries.
2195
2779
2196
2780
# New type for defining tokens, syntax, and semantics all-in-one
2197
2781
Token = collections.namedtuple("Token", (
2198
2782
"regexp", # To match token; if "value" is not None, must have
2231
2815
frozenset((token_year, token_month,
2232
2816
token_day, token_time,
2233
2817
token_week)))
2234
# Define starting values
2235
value = datetime.timedelta() # Value so far
2818
# Define starting values:
2819
# Value so far
2820
value = datetime.timedelta()
2236
2821
found_token = None
2237
followers = frozenset((token_duration, )) # Following valid tokens
2238
s = duration # String left to parse
2822
# Following valid tokens
2823
followers = frozenset((token_duration, ))
2824
# String left to parse
2825
s = duration
2239
2826
# Loop until end token is found
2240
2827
while found_token is not token_end:
2241
2828
# Search for any currently valid tokens
2265
2852
2266
2853
def string_to_delta(interval):
2267
2854
"""Parse a string and return a datetime.timedelta
2268
2855
2269
2856
>>> string_to_delta('7d')
2270
2857
datetime.timedelta(7)
2271
2858
>>> string_to_delta('60s')
2279
2866
>>> string_to_delta('5m 30s')
2280
2867
datetime.timedelta(0, 330)
2281
2868
"""
2282
2869
2283
2870
try:
2284
2871
return rfc3339_duration_to_delta(interval)
2285
2872
except ValueError:
2286
2873
pass
2287
2874
2288
2875
timevalue = datetime.timedelta(0)
2289
2876
for s in interval.split():
2290
2877
try:
2308
2895
return timevalue
2309
2896
2310
2897
2311
def daemon(nochdir = False, noclose = False):
2898
def daemon(nochdir=False, noclose=False):
2312
2899
"""See daemon(3). Standard BSD Unix function.
2313
2900
2314
2901
This should really exist as os.daemon, but it doesn't (yet)."""
2315
2902
if os.fork():
2316
2903
sys.exit()
2334
2921
2335
2922
2336
2923
def main():
2337
2924
2338
2925
##################################################################
2339
2926
# Parsing of options, both command line and config file
2340
2927
2341
2928
parser = argparse.ArgumentParser()
2342
2929
parser.add_argument("-v", "--version", action="version",
2343
version = "%(prog)s {}".format(version),
2930
version="%(prog)s {}".format(version),
2344
2931
help="show version number and exit")
2345
2932
parser.add_argument("-i", "--interface", metavar="IF",
2346
2933
help="Bind to interface IF")
2382
2969
parser.add_argument("--no-zeroconf", action="store_false",
2383
2970
dest="zeroconf", help="Do not use Zeroconf",
2384
2971
default=None)
2385
2972
2386
2973
options = parser.parse_args()
2387
2974
2388
2975
if options.check:
2389
2976
import doctest
2390
2977
fail_count, test_count = doctest.testmod()
2391
2978
sys.exit(os.EX_OK if fail_count == 0 else 1)
2392
2979
2393
2980
# Default values for config file for server-global settings
2394
server_defaults = { "interface": "",
2395
"address": "",
2396
"port": "",
2397
"debug": "False",
2398
"priority":
2399
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2400
":+SIGN-DSA-SHA256",
2401
"servicename": "Mandos",
2402
"use_dbus": "True",
2403
"use_ipv6": "True",
2404
"debuglevel": "",
2405
"restore": "True",
2406
"socket": "",
2407
"statedir": "/var/lib/mandos",
2408
"foreground": "False",
2409
"zeroconf": "True",
2410
}
2411
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
2412
3004
# Parse config file for server-global settings
2413
server_config = configparser.SafeConfigParser(server_defaults)
3005
server_config = configparser.ConfigParser(server_defaults)
2414
3006
del server_defaults
2415
3007
server_config.read(os.path.join(options.configdir, "mandos.conf"))
2416
# Convert the SafeConfigParser object to a dict
3008
# Convert the ConfigParser object to a dict
2417
3009
server_settings = server_config.defaults()
2418
3010
# Use the appropriate methods on the non-string config options
2419
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
3011
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3012
"foreground", "zeroconf"):
2420
3013
server_settings[option] = server_config.getboolean("DEFAULT",
2421
3014
option)
2422
3015
if server_settings["port"]:
2432
3025
server_settings["socket"] = os.dup(server_settings
2433
3026
["socket"])
2434
3027
del server_config
2435
3028
2436
3029
# Override the settings from the config file with command line
2437
3030
# options, if set.
2438
3031
for option in ("interface", "address", "port", "debug",
2456
3049
if server_settings["debug"]:
2457
3050
server_settings["foreground"] = True
2458
3051
# Now we have our good server settings in "server_settings"
2459
3052
2460
3053
##################################################################
2461
3054
2462
3055
if (not server_settings["zeroconf"]
2463
3056
and not (server_settings["port"]
2464
3057
or server_settings["socket"] != "")):
2465
3058
parser.error("Needs port or socket to work without Zeroconf")
2466
3059
2467
3060
# For convenience
2468
3061
debug = server_settings["debug"]
2469
3062
debuglevel = server_settings["debuglevel"]
2473
3066
stored_state_file)
2474
3067
foreground = server_settings["foreground"]
2475
3068
zeroconf = server_settings["zeroconf"]
2476
3069
2477
3070
if debug:
2478
3071
initlogger(debug, logging.DEBUG)
2479
3072
else:
2482
3075
else:
2483
3076
level = getattr(logging, debuglevel.upper())
2484
3077
initlogger(debug, level)
2485
3078
2486
3079
if server_settings["servicename"] != "Mandos":
2487
3080
syslogger.setFormatter(
2488
3081
logging.Formatter('Mandos ({}) [%(process)d]:'
2489
3082
' %(levelname)s: %(message)s'.format(
2490
3083
server_settings["servicename"])))
2491
3084
2492
3085
# Parse config file with clients
2493
client_config = configparser.SafeConfigParser(Client
2494
.client_defaults)
3086
client_config = configparser.ConfigParser(Client.client_defaults)
2495
3087
client_config.read(os.path.join(server_settings["configdir"],
2496
3088
"clients.conf"))
2497
3089
2498
3090
global mandos_dbus_service
2499
3091
mandos_dbus_service = None
2500
3092
2501
3093
socketfd = None
2502
3094
if server_settings["socket"] != "":
2503
3095
socketfd = server_settings["socket"]
2519
3111
except IOError as e:
2520
3112
logger.error("Could not open file %r", pidfilename,
2521
3113
exc_info=e)
2522
2523
for name in ("_mandos", "mandos", "nobody"):
3114
3115
for name, group in (("_mandos", "_mandos"),
3116
("mandos", "mandos"),
3117
("nobody", "nogroup")):
2524
3118
try:
2525
3119
uid = pwd.getpwnam(name).pw_uid
2526
gid = pwd.getpwnam(name).pw_gid
3120
gid = pwd.getpwnam(group).pw_gid
2527
3121
break
2528
3122
except KeyError:
2529
3123
continue
2533
3127
try:
2534
3128
os.setgid(gid)
2535
3129
os.setuid(uid)
3130
if debug:
3131
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3132
gid))
2536
3133
except OSError as error:
3134
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3135
.format(uid, gid, os.strerror(error.errno)))
2537
3136
if error.errno != errno.EPERM:
2538
3137
raise
2539
3138
2540
3139
if debug:
2541
3140
# Enable all possible GnuTLS debugging
2542
3141
2543
3142
# "Use a log level over 10 to enable all debugging options."
2544
3143
# - GnuTLS manual
2545
gnutls.library.functions.gnutls_global_set_log_level(11)
2546
2547
@gnutls.library.types.gnutls_log_func
3144
gnutls.global_set_log_level(11)
3145
3146
@gnutls.log_func
2548
3147
def debug_gnutls(level, string):
2549
3148
logger.debug("GnuTLS: %s", string[:-1])
2550
2551
gnutls.library.functions.gnutls_global_set_log_function(
2552
debug_gnutls)
2553
3149
3150
gnutls.global_set_log_function(debug_gnutls)
3151
2554
3152
# Redirect stdin so all checkers get /dev/null
2555
3153
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2556
3154
os.dup2(null, sys.stdin.fileno())
2557
3155
if null > 2:
2558
3156
os.close(null)
2559
3157
2560
3158
# Need to fork before connecting to D-Bus
2561
3159
if not foreground:
2562
3160
# Close all input and output, do double fork, etc.
2563
3161
daemon()
2564
2565
# multiprocessing will use threads, so before we use gobject we
2566
# need to inform gobject that threads will be used.
2567
gobject.threads_init()
2568
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
2569
3168
global main_loop
2570
3169
# From the Avahi example code
2571
3170
DBusGMainLoop(set_as_default=True)
2572
main_loop = gobject.MainLoop()
3171
main_loop = GLib.MainLoop()
2573
3172
bus = dbus.SystemBus()
2574
3173
# End of Avahi example code
2575
3174
if use_dbus:
2588
3187
if zeroconf:
2589
3188
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2590
3189
service = AvahiServiceToSyslog(
2591
name = server_settings["servicename"],
2592
servicetype = "_mandos._tcp",
2593
protocol = protocol,
2594
bus = bus)
3190
name=server_settings["servicename"],
3191
servicetype="_mandos._tcp",
3192
protocol=protocol,
3193
bus=bus)
2595
3194
if server_settings["interface"]:
2596
3195
service.interface = if_nametoindex(
2597
3196
server_settings["interface"].encode("utf-8"))
2598
3197
2599
3198
global multiprocessing_manager
2600
3199
multiprocessing_manager = multiprocessing.Manager()
2601
3200
2602
3201
client_class = Client
2603
3202
if use_dbus:
2604
client_class = functools.partial(ClientDBus, bus = bus)
2605
3203
client_class = functools.partial(ClientDBus, bus=bus)
3204
2606
3205
client_settings = Client.config_parser(client_config)
2607
3206
old_client_settings = {}
2608
3207
clients_data = {}
2609
3208
2610
3209
# This is used to redirect stdout and stderr for checker processes
2611
3210
global wnull
2612
wnull = open(os.devnull, "w") # A writable /dev/null
3211
wnull = open(os.devnull, "w") # A writable /dev/null
2613
3212
# Only used if server is running in foreground but not in debug
2614
3213
# mode
2615
3214
if debug or not foreground:
2616
3215
wnull.close()
2617
3216
2618
3217
# Get client data and settings from last running state.
2619
3218
if server_settings["restore"]:
2620
3219
try:
2621
3220
with open(stored_state_path, "rb") as stored_state:
2622
clients_data, old_client_settings = pickle.load(
2623
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"))
2624
3270
os.remove(stored_state_path)
2625
3271
except IOError as e:
2626
3272
if e.errno == errno.ENOENT:
2634
3280
logger.warning("Could not load persistent state: "
2635
3281
"EOFError:",
2636
3282
exc_info=e)
2637
3283
2638
3284
with PGPEngine() as pgp:
2639
3285
for client_name, client in clients_data.items():
2640
3286
# Skip removed clients
2641
3287
if client_name not in client_settings:
2642
3288
continue
2643
3289
2644
3290
# Decide which value to use after restoring saved state.
2645
3291
# We have three different values: Old config file,
2646
3292
# new config file, and saved state.
2657
3303
client[name] = value
2658
3304
except KeyError:
2659
3305
pass
2660
3306
2661
3307
# Clients who has passed its expire date can still be
2662
3308
# enabled if its last checker was successful. A Client
2663
3309
# whose checker succeeded before we stored its state is
2696
3342
client_name))
2697
3343
client["secret"] = (client_settings[client_name]
2698
3344
["secret"])
2699
3345
2700
3346
# Add/remove clients based on new changes made to config
2701
3347
for client_name in (set(old_client_settings)
2702
3348
- set(client_settings)):
2704
3350
for client_name in (set(client_settings)
2705
3351
- set(old_client_settings)):
2706
3352
clients_data[client_name] = client_settings[client_name]
2707
3353
2708
3354
# Create all client objects
2709
3355
for client_name, client in clients_data.items():
2710
3356
tcp_server.clients[client_name] = client_class(
2711
name = client_name,
2712
settings = client,
2713
server_settings = server_settings)
2714
3357
name=client_name,
3358
settings=client,
3359
server_settings=server_settings)
3360
2715
3361
if not tcp_server.clients:
2716
3362
logger.warning("No clients defined")
2717
3363
2718
3364
if not foreground:
2719
3365
if pidfile is not None:
2720
3366
pid = os.getpid()
2726
3372
pidfilename, pid)
2727
3373
del pidfile
2728
3374
del pidfilename
2729
2730
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2731
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2732
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
2733
3380
if use_dbus:
2734
3381
2735
3382
@alternate_dbus_interfaces(
2736
{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
2737
class MandosDBusService(DBusObjectWithProperties):
3383
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3384
class MandosDBusService(DBusObjectWithObjectManager):
2738
3385
"""A D-Bus proxy object"""
2739
3386
2740
3387
def __init__(self):
2741
3388
dbus.service.Object.__init__(self, bus, "/")
2742
3389
2743
3390
_interface = "se.recompile.Mandos"
2744
2745
@dbus_interface_annotations(_interface)
2746
def _foo(self):
2747
return {
2748
"org.freedesktop.DBus.Property.EmitsChangedSignal":
2749
"false" }
2750
3391
2751
3392
@dbus.service.signal(_interface, signature="o")
2752
3393
def ClientAdded(self, objpath):
2753
3394
"D-Bus signal"
2754
3395
pass
2755
3396
2756
3397
@dbus.service.signal(_interface, signature="ss")
2757
def ClientNotFound(self, fingerprint, address):
3398
def ClientNotFound(self, key_id, address):
2758
3399
"D-Bus signal"
2759
3400
pass
2760
3401
3402
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3403
"true"})
2761
3404
@dbus.service.signal(_interface, signature="os")
2762
3405
def ClientRemoved(self, objpath, name):
2763
3406
"D-Bus signal"
2764
3407
pass
2765
3408
3409
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3410
"true"})
2766
3411
@dbus.service.method(_interface, out_signature="ao")
2767
3412
def GetAllClients(self):
2768
3413
"D-Bus method"
2769
3414
return dbus.Array(c.dbus_object_path for c in
2770
tcp_server.clients.itervalues())
2771
3415
tcp_server.clients.values())
3416
3417
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3418
"true"})
2772
3419
@dbus.service.method(_interface,
2773
3420
out_signature="a{oa{sv}}")
2774
3421
def GetAllClientsWithProperties(self):
2775
3422
"D-Bus method"
2776
3423
return dbus.Dictionary(
2777
{ c.dbus_object_path: c.GetAll("")
2778
for c in tcp_server.clients.itervalues() },
3424
{c.dbus_object_path: c.GetAll(
3425
"se.recompile.Mandos.Client")
3426
for c in tcp_server.clients.values()},
2779
3427
signature="oa{sv}")
2780
3428
2781
3429
@dbus.service.method(_interface, in_signature="o")
2782
3430
def RemoveClient(self, object_path):
2783
3431
"D-Bus method"
2784
for c in tcp_server.clients.itervalues():
3432
for c in tcp_server.clients.values():
2785
3433
if c.dbus_object_path == object_path:
2786
3434
del tcp_server.clients[c.name]
2787
3435
c.remove_from_connection()
2788
# Don't signal anything except ClientRemoved
3436
# Don't signal the disabling
2789
3437
c.disable(quiet=True)
2790
# Emit D-Bus signal
2791
self.ClientRemoved(object_path, c.name)
3438
# Emit D-Bus signal for removal
3439
self.client_removed_signal(c)
2792
3440
return
2793
3441
raise KeyError(object_path)
2794
3442
2795
3443
del _interface
2796
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
2797
3481
mandos_dbus_service = MandosDBusService()
2798
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
2799
3488
def cleanup():
2800
3489
"Cleanup function; run on exit"
2801
3490
if zeroconf:
2802
3491
service.cleanup()
2803
2804
multiprocessing.active_children()
2805
wnull.close()
3492
3493
mp.active_children()
3494
wn.close()
2806
3495
if not (tcp_server.clients or client_settings):
2807
3496
return
2808
3497
2809
3498
# Store client before exiting. Secrets are encrypted with key
2810
3499
# based on what config file has. If config file is
2811
3500
# removed/edited, old secret will thus be unrecovable.
2812
3501
clients = {}
2813
3502
with PGPEngine() as pgp:
2814
for client in tcp_server.clients.itervalues():
3503
for client in tcp_server.clients.values():
2815
3504
key = client_settings[client.name]["secret"]
2816
3505
client.encrypted_secret = pgp.encrypt(client.secret,
2817
3506
key)
2818
3507
client_dict = {}
2819
3508
2820
3509
# A list of attributes that can not be pickled
2821
3510
# + secret.
2822
exclude = { "bus", "changedstate", "secret",
2823
"checker", "server_settings" }
3511
exclude = {"bus", "changedstate", "secret",
3512
"checker", "server_settings"}
2824
3513
for name, typ in inspect.getmembers(dbus.service
2825
3514
.Object):
2826
3515
exclude.add(name)
2827
3516
2828
3517
client_dict["encrypted_secret"] = (client
2829
3518
.encrypted_secret)
2830
3519
for attr in client.client_structure:
2831
3520
if attr not in exclude:
2832
3521
client_dict[attr] = getattr(client, attr)
2833
3522
2834
3523
clients[client.name] = client_dict
2835
3524
del client_settings[client.name]["secret"]
2836
3525
2837
3526
try:
2838
3527
with tempfile.NamedTemporaryFile(
2839
3528
mode='wb',
2841
3530
prefix='clients-',
2842
3531
dir=os.path.dirname(stored_state_path),
2843
3532
delete=False) as stored_state:
2844
pickle.dump((clients, client_settings), stored_state)
3533
pickle.dump((clients, client_settings), stored_state,
3534
protocol=2)
2845
3535
tempname = stored_state.name
2846
3536
os.rename(tempname, stored_state_path)
2847
3537
except (IOError, OSError) as e:
2857
3547
logger.warning("Could not save persistent state:",
2858
3548
exc_info=e)
2859
3549
raise
2860
3550
2861
3551
# Delete all clients, and settings from config
2862
3552
while tcp_server.clients:
2863
3553
name, client = tcp_server.clients.popitem()
2864
3554
if use_dbus:
2865
3555
client.remove_from_connection()
2866
# Don't signal anything except ClientRemoved
3556
# Don't signal the disabling
2867
3557
client.disable(quiet=True)
3558
# Emit D-Bus signal for removal
2868
3559
if use_dbus:
2869
# Emit D-Bus signal
2870
mandos_dbus_service.ClientRemoved(
2871
client.dbus_object_path, client.name)
3560
mandos_dbus_service.client_removed_signal(client)
2872
3561
client_settings.clear()
2873
3562
2874
3563
atexit.register(cleanup)
2875
2876
for client in tcp_server.clients.itervalues():
3564
3565
for client in tcp_server.clients.values():
2877
3566
if use_dbus:
2878
# Emit D-Bus signal
2879
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3567
# Emit D-Bus signal for adding
3568
mandos_dbus_service.client_added_signal(client)
2880
3569
# Need to initiate checking of clients
2881
3570
if client.enabled:
2882
3571
client.init_checker()
2883
3572
2884
3573
tcp_server.enable()
2885
3574
tcp_server.server_activate()
2886
3575
2887
3576
# Find out what port we got
2888
3577
if zeroconf:
2889
3578
service.port = tcp_server.socket.getsockname()[1]
2894
3583
else: # IPv4
2895
3584
logger.info("Now listening on address %r, port %d",
2896
3585
*tcp_server.socket.getsockname())
2897
2898
#service.interface = tcp_server.socket.getsockname()[3]
2899
3586
3587
# service.interface = tcp_server.socket.getsockname()[3]
3588
2900
3589
try:
2901
3590
if zeroconf:
2902
3591
# From the Avahi example code
2907
3596
cleanup()
2908
3597
sys.exit(1)
2909
3598
# End of Avahi example code
2910
2911
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2912
lambda *args, **kwargs:
2913
(tcp_server.handle_request
2914
(*args[2:], **kwargs) or True))
2915
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
2916
3605
logger.debug("Starting main loop")
2917
3606
main_loop.run()
2918
3607
except AvahiError as error:
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0