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- Committer: Teddy Hogeborn
- Date: 2018-02-12 15:03:06 UTC
- Revision ID: teddy@recompile.se-20180212150306-x1bpg7rqb3xk4hog
Tags: version-1.7.18-1
* Makefile (version): Change to 1.7.18.
* NEWS (Version 1.7.18): Add new entry.
* debian/changelog (1.7.18-1): - '' -
* NEWS (Version 1.7.18): Add new entry.
* debian/changelog (1.7.18-1): - '' -
added
removed
mandos
1
1
#!/usr/bin/python
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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 © 2008-2016 Teddy Hogeborn
15
# Copyright © 2008-2016 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 © 2008-2018 Teddy Hogeborn
15
# Copyright © 2008-2018 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
76
80
77
81
import dbus
78
82
import dbus.service
79
try:
80
import gobject
81
except ImportError:
82
from gi.repository import GObject as gobject
83
import avahi
83
from gi.repository import GLib
84
84
from dbus.mainloop.glib import DBusGMainLoop
85
85
import ctypes
86
86
import ctypes.util
87
87
import xml.dom.minidom
88
88
import inspect
89
89
90
# Try to find the value of SO_BINDTODEVICE:
90
91
try:
92
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
93
# newer, and it is also the most natural place for it:
91
94
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
92
95
except AttributeError:
93
96
try:
97
# This is where SO_BINDTODEVICE was up to and including Python
98
# 2.6, and also 3.2:
94
99
from IN import SO_BINDTODEVICE
95
100
except ImportError:
96
SO_BINDTODEVICE = None
101
# In Python 2.7 it seems to have been removed entirely.
102
# Try running the C preprocessor:
103
try:
104
cc = subprocess.Popen(["cc", "--language=c", "-E",
105
"/dev/stdin"],
106
stdin=subprocess.PIPE,
107
stdout=subprocess.PIPE)
108
stdout = cc.communicate(
109
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
110
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
111
except (OSError, ValueError, IndexError):
112
# No value found
113
SO_BINDTODEVICE = None
97
114
98
115
if sys.version_info.major == 2:
99
116
str = unicode
100
117
101
version = "1.7.3"
118
version = "1.7.18"
102
119
stored_state_file = "clients.pickle"
103
120
104
121
logger = logging.getLogger()
108
125
if_nametoindex = ctypes.cdll.LoadLibrary(
109
126
ctypes.util.find_library("c")).if_nametoindex
110
127
except (OSError, AttributeError):
111
128
112
129
def if_nametoindex(interface):
113
130
"Get an interface index the hard way, i.e. using fcntl()"
114
131
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
119
136
return interface_index
120
137
121
138
139
def copy_function(func):
140
"""Make a copy of a function"""
141
if sys.version_info.major == 2:
142
return types.FunctionType(func.func_code,
143
func.func_globals,
144
func.func_name,
145
func.func_defaults,
146
func.func_closure)
147
else:
148
return types.FunctionType(func.__code__,
149
func.__globals__,
150
func.__name__,
151
func.__defaults__,
152
func.__closure__)
153
154
122
155
def initlogger(debug, level=logging.WARNING):
123
156
"""init logger and add loglevel"""
124
157
125
158
global syslogger
126
159
syslogger = (logging.handlers.SysLogHandler(
127
facility = logging.handlers.SysLogHandler.LOG_DAEMON,
128
address = "/dev/log"))
160
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
161
address="/dev/log"))
129
162
syslogger.setFormatter(logging.Formatter
130
163
('Mandos [%(process)d]: %(levelname)s:'
131
164
' %(message)s'))
132
165
logger.addHandler(syslogger)
133
166
134
167
if debug:
135
168
console = logging.StreamHandler()
136
169
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
148
181
149
182
class PGPEngine(object):
150
183
"""A simple class for OpenPGP symmetric encryption & decryption"""
151
184
152
185
def __init__(self):
153
186
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
154
187
self.gpg = "gpg"
155
188
try:
156
189
output = subprocess.check_output(["gpgconf"])
157
190
for line in output.splitlines():
158
name, text, path = line.split(":")
191
name, text, path = line.split(b":")
159
192
if name == "gpg":
160
193
self.gpg = path
161
194
break
165
198
self.gnupgargs = ['--batch',
166
199
'--homedir', self.tempdir,
167
200
'--force-mdc',
168
'--quiet',
169
'--no-use-agent']
170
201
'--quiet']
202
# Only GPG version 1 has the --no-use-agent option.
203
if self.gpg == "gpg" or self.gpg.endswith("/gpg"):
204
self.gnupgargs.append("--no-use-agent")
205
171
206
def __enter__(self):
172
207
return self
173
208
174
209
def __exit__(self, exc_type, exc_value, traceback):
175
210
self._cleanup()
176
211
return False
177
212
178
213
def __del__(self):
179
214
self._cleanup()
180
215
181
216
def _cleanup(self):
182
217
if self.tempdir is not None:
183
218
# Delete contents of tempdir
184
219
for root, dirs, files in os.walk(self.tempdir,
185
topdown = False):
220
topdown=False):
186
221
for filename in files:
187
222
os.remove(os.path.join(root, filename))
188
223
for dirname in dirs:
190
225
# Remove tempdir
191
226
os.rmdir(self.tempdir)
192
227
self.tempdir = None
193
228
194
229
def password_encode(self, password):
195
230
# Passphrase can not be empty and can not contain newlines or
196
231
# NUL bytes. So we prefix it and hex encode it.
201
236
.replace(b"\n", b"\\n")
202
237
.replace(b"\0", b"\\x00"))
203
238
return encoded
204
239
205
240
def encrypt(self, data, password):
206
241
passphrase = self.password_encode(password)
207
242
with tempfile.NamedTemporaryFile(
212
247
'--passphrase-file',
213
248
passfile.name]
214
249
+ self.gnupgargs,
215
stdin = subprocess.PIPE,
216
stdout = subprocess.PIPE,
217
stderr = subprocess.PIPE)
218
ciphertext, err = proc.communicate(input = data)
250
stdin=subprocess.PIPE,
251
stdout=subprocess.PIPE,
252
stderr=subprocess.PIPE)
253
ciphertext, err = proc.communicate(input=data)
219
254
if proc.returncode != 0:
220
255
raise PGPError(err)
221
256
return ciphertext
222
257
223
258
def decrypt(self, data, password):
224
259
passphrase = self.password_encode(password)
225
260
with tempfile.NamedTemporaryFile(
226
dir = self.tempdir) as passfile:
261
dir=self.tempdir) as passfile:
227
262
passfile.write(passphrase)
228
263
passfile.flush()
229
264
proc = subprocess.Popen([self.gpg, '--decrypt',
230
265
'--passphrase-file',
231
266
passfile.name]
232
267
+ self.gnupgargs,
233
stdin = subprocess.PIPE,
234
stdout = subprocess.PIPE,
235
stderr = subprocess.PIPE)
236
decrypted_plaintext, err = proc.communicate(input = data)
268
stdin=subprocess.PIPE,
269
stdout=subprocess.PIPE,
270
stderr=subprocess.PIPE)
271
decrypted_plaintext, err = proc.communicate(input=data)
237
272
if proc.returncode != 0:
238
273
raise PGPError(err)
239
274
return decrypted_plaintext
240
275
241
276
277
# Pretend that we have an Avahi module
278
class Avahi(object):
279
"""This isn't so much a class as it is a module-like namespace.
280
It is instantiated once, and simulates having an Avahi module."""
281
IF_UNSPEC = -1 # avahi-common/address.h
282
PROTO_UNSPEC = -1 # avahi-common/address.h
283
PROTO_INET = 0 # avahi-common/address.h
284
PROTO_INET6 = 1 # avahi-common/address.h
285
DBUS_NAME = "org.freedesktop.Avahi"
286
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
287
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
288
DBUS_PATH_SERVER = "/"
289
290
def string_array_to_txt_array(self, t):
291
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
292
for s in t), signature="ay")
293
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
294
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
295
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
296
SERVER_INVALID = 0 # avahi-common/defs.h
297
SERVER_REGISTERING = 1 # avahi-common/defs.h
298
SERVER_RUNNING = 2 # avahi-common/defs.h
299
SERVER_COLLISION = 3 # avahi-common/defs.h
300
SERVER_FAILURE = 4 # avahi-common/defs.h
301
avahi = Avahi()
302
303
242
304
class AvahiError(Exception):
243
305
def __init__(self, value, *args, **kwargs):
244
306
self.value = value
256
318
257
319
class AvahiService(object):
258
320
"""An Avahi (Zeroconf) service.
259
321
260
322
Attributes:
261
323
interface: integer; avahi.IF_UNSPEC or an interface index.
262
324
Used to optionally bind to the specified interface.
274
336
server: D-Bus Server
275
337
bus: dbus.SystemBus()
276
338
"""
277
339
278
340
def __init__(self,
279
interface = avahi.IF_UNSPEC,
280
name = None,
281
servicetype = None,
282
port = None,
283
TXT = None,
284
domain = "",
285
host = "",
286
max_renames = 32768,
287
protocol = avahi.PROTO_UNSPEC,
288
bus = None):
341
interface=avahi.IF_UNSPEC,
342
name=None,
343
servicetype=None,
344
port=None,
345
TXT=None,
346
domain="",
347
host="",
348
max_renames=32768,
349
protocol=avahi.PROTO_UNSPEC,
350
bus=None):
289
351
self.interface = interface
290
352
self.name = name
291
353
self.type = servicetype
300
362
self.server = None
301
363
self.bus = bus
302
364
self.entry_group_state_changed_match = None
303
365
304
366
def rename(self, remove=True):
305
367
"""Derived from the Avahi example code"""
306
368
if self.rename_count >= self.max_renames:
326
388
logger.critical("D-Bus Exception", exc_info=error)
327
389
self.cleanup()
328
390
os._exit(1)
329
391
330
392
def remove(self):
331
393
"""Derived from the Avahi example code"""
332
394
if self.entry_group_state_changed_match is not None:
334
396
self.entry_group_state_changed_match = None
335
397
if self.group is not None:
336
398
self.group.Reset()
337
399
338
400
def add(self):
339
401
"""Derived from the Avahi example code"""
340
402
self.remove()
357
419
dbus.UInt16(self.port),
358
420
avahi.string_array_to_txt_array(self.TXT))
359
421
self.group.Commit()
360
422
361
423
def entry_group_state_changed(self, state, error):
362
424
"""Derived from the Avahi example code"""
363
425
logger.debug("Avahi entry group state change: %i", state)
364
426
365
427
if state == avahi.ENTRY_GROUP_ESTABLISHED:
366
428
logger.debug("Zeroconf service established.")
367
429
elif state == avahi.ENTRY_GROUP_COLLISION:
371
433
logger.critical("Avahi: Error in group state changed %s",
372
434
str(error))
373
435
raise AvahiGroupError("State changed: {!s}".format(error))
374
436
375
437
def cleanup(self):
376
438
"""Derived from the Avahi example code"""
377
439
if self.group is not None:
382
444
pass
383
445
self.group = None
384
446
self.remove()
385
447
386
448
def server_state_changed(self, state, error=None):
387
449
"""Derived from the Avahi example code"""
388
450
logger.debug("Avahi server state change: %i", state)
417
479
logger.debug("Unknown state: %r", state)
418
480
else:
419
481
logger.debug("Unknown state: %r: %r", state, error)
420
482
421
483
def activate(self):
422
484
"""Derived from the Avahi example code"""
423
485
if self.server is None:
434
496
class AvahiServiceToSyslog(AvahiService):
435
497
def rename(self, *args, **kwargs):
436
498
"""Add the new name to the syslog messages"""
437
ret = AvahiService.rename(self, *args, **kwargs)
499
ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
438
500
syslogger.setFormatter(logging.Formatter(
439
501
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
440
502
.format(self.name)))
441
503
return ret
442
504
505
443
506
# Pretend that we have a GnuTLS module
444
507
class GnuTLS(object):
445
508
"""This isn't so much a class as it is a module-like namespace.
446
509
It is instantiated once, and simulates having a GnuTLS module."""
447
448
_library = ctypes.cdll.LoadLibrary(
449
ctypes.util.find_library("gnutls"))
450
_need_version = "3.3.0"
510
511
library = ctypes.util.find_library("gnutls")
512
if library is None:
513
library = ctypes.util.find_library("gnutls-deb0")
514
_library = ctypes.cdll.LoadLibrary(library)
515
del library
516
_need_version = b"3.3.0"
517
451
518
def __init__(self):
452
# Need to use class name "GnuTLS" here, since this method is
453
# called before the assignment to the "gnutls" global variable
454
# happens.
455
if GnuTLS.check_version(self._need_version) is None:
456
raise GnuTLS.Error("Needs GnuTLS {} or later"
457
.format(self._need_version))
458
519
# Need to use "self" here, since this method is called before
520
# the assignment to the "gnutls" global variable happens.
521
if self.check_version(self._need_version) is None:
522
raise self.Error("Needs GnuTLS {} or later"
523
.format(self._need_version))
524
459
525
# Unless otherwise indicated, the constants and types below are
460
526
# all from the gnutls/gnutls.h C header file.
461
527
462
528
# Constants
463
529
E_SUCCESS = 0
464
530
E_INTERRUPTED = -52
469
535
CRD_CERTIFICATE = 1
470
536
E_NO_CERTIFICATE_FOUND = -49
471
537
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
472
538
473
539
# Types
474
540
class session_int(ctypes.Structure):
475
541
_fields_ = []
476
542
session_t = ctypes.POINTER(session_int)
543
477
544
class certificate_credentials_st(ctypes.Structure):
478
545
_fields_ = []
479
546
certificate_credentials_t = ctypes.POINTER(
480
547
certificate_credentials_st)
481
548
certificate_type_t = ctypes.c_int
549
482
550
class datum_t(ctypes.Structure):
483
551
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
484
552
('size', ctypes.c_uint)]
553
485
554
class openpgp_crt_int(ctypes.Structure):
486
555
_fields_ = []
487
556
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
488
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
557
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
489
558
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
490
credentials_type_t = ctypes.c_int #
559
credentials_type_t = ctypes.c_int
491
560
transport_ptr_t = ctypes.c_void_p
492
561
close_request_t = ctypes.c_int
493
562
494
563
# Exceptions
495
564
class Error(Exception):
496
565
# We need to use the class name "GnuTLS" here, since this
497
566
# exception might be raised from within GnuTLS.__init__,
498
567
# which is called before the assignment to the "gnutls"
499
568
# global variable has happened.
500
def __init__(self, message = None, code = None, args=()):
569
def __init__(self, message=None, code=None, args=()):
501
570
# Default usage is by a message string, but if a return
502
571
# code is passed, convert it to a string with
503
572
# gnutls.strerror()
506
575
message = GnuTLS.strerror(code)
507
576
return super(GnuTLS.Error, self).__init__(
508
577
message, *args)
509
578
510
579
class CertificateSecurityError(Error):
511
580
pass
512
581
513
582
# Classes
514
583
class Credentials(object):
515
584
def __init__(self):
517
586
gnutls.certificate_allocate_credentials(
518
587
ctypes.byref(self._c_object))
519
588
self.type = gnutls.CRD_CERTIFICATE
520
589
521
590
def __del__(self):
522
591
gnutls.certificate_free_credentials(self._c_object)
523
592
524
593
class ClientSession(object):
525
def __init__(self, socket, credentials = None):
594
def __init__(self, socket, credentials=None):
526
595
self._c_object = gnutls.session_t()
527
596
gnutls.init(ctypes.byref(self._c_object), gnutls.CLIENT)
528
597
gnutls.set_default_priority(self._c_object)
536
605
ctypes.cast(credentials._c_object,
537
606
ctypes.c_void_p))
538
607
self.credentials = credentials
539
608
540
609
def __del__(self):
541
610
gnutls.deinit(self._c_object)
542
611
543
612
def handshake(self):
544
613
return gnutls.handshake(self._c_object)
545
614
546
615
def send(self, data):
547
616
data = bytes(data)
548
617
data_len = len(data)
550
619
data_len -= gnutls.record_send(self._c_object,
551
620
data[-data_len:],
552
621
data_len)
553
622
554
623
def bye(self):
555
624
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
556
625
557
626
# Error handling functions
558
627
def _error_code(result):
559
628
"""A function to raise exceptions on errors, suitable
561
630
if result >= 0:
562
631
return result
563
632
if result == gnutls.E_NO_CERTIFICATE_FOUND:
564
raise gnutls.CertificateSecurityError(code = result)
565
raise gnutls.Error(code = result)
566
633
raise gnutls.CertificateSecurityError(code=result)
634
raise gnutls.Error(code=result)
635
567
636
def _retry_on_error(result, func, arguments):
568
637
"""A function to retry on some errors, suitable
569
638
for the 'errcheck' attribute on ctypes functions"""
572
641
return _error_code(result)
573
642
result = func(*arguments)
574
643
return result
575
644
576
645
# Unless otherwise indicated, the function declarations below are
577
646
# all from the gnutls/gnutls.h C header file.
578
647
579
648
# Functions
580
649
priority_set_direct = _library.gnutls_priority_set_direct
581
650
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
582
651
ctypes.POINTER(ctypes.c_char_p)]
583
652
priority_set_direct.restype = _error_code
584
653
585
654
init = _library.gnutls_init
586
655
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
587
656
init.restype = _error_code
588
657
589
658
set_default_priority = _library.gnutls_set_default_priority
590
659
set_default_priority.argtypes = [session_t]
591
660
set_default_priority.restype = _error_code
592
661
593
662
record_send = _library.gnutls_record_send
594
663
record_send.argtypes = [session_t, ctypes.c_void_p,
595
664
ctypes.c_size_t]
596
665
record_send.restype = ctypes.c_ssize_t
597
666
record_send.errcheck = _retry_on_error
598
667
599
668
certificate_allocate_credentials = (
600
669
_library.gnutls_certificate_allocate_credentials)
601
670
certificate_allocate_credentials.argtypes = [
602
671
ctypes.POINTER(certificate_credentials_t)]
603
672
certificate_allocate_credentials.restype = _error_code
604
673
605
674
certificate_free_credentials = (
606
675
_library.gnutls_certificate_free_credentials)
607
certificate_free_credentials.argtypes = [certificate_credentials_t]
676
certificate_free_credentials.argtypes = [
677
certificate_credentials_t]
608
678
certificate_free_credentials.restype = None
609
679
610
680
handshake_set_private_extensions = (
611
681
_library.gnutls_handshake_set_private_extensions)
612
682
handshake_set_private_extensions.argtypes = [session_t,
613
683
ctypes.c_int]
614
684
handshake_set_private_extensions.restype = None
615
685
616
686
credentials_set = _library.gnutls_credentials_set
617
687
credentials_set.argtypes = [session_t, credentials_type_t,
618
688
ctypes.c_void_p]
619
689
credentials_set.restype = _error_code
620
690
621
691
strerror = _library.gnutls_strerror
622
692
strerror.argtypes = [ctypes.c_int]
623
693
strerror.restype = ctypes.c_char_p
624
694
625
695
certificate_type_get = _library.gnutls_certificate_type_get
626
696
certificate_type_get.argtypes = [session_t]
627
697
certificate_type_get.restype = _error_code
628
698
629
699
certificate_get_peers = _library.gnutls_certificate_get_peers
630
700
certificate_get_peers.argtypes = [session_t,
631
701
ctypes.POINTER(ctypes.c_uint)]
632
702
certificate_get_peers.restype = ctypes.POINTER(datum_t)
633
703
634
704
global_set_log_level = _library.gnutls_global_set_log_level
635
705
global_set_log_level.argtypes = [ctypes.c_int]
636
706
global_set_log_level.restype = None
637
707
638
708
global_set_log_function = _library.gnutls_global_set_log_function
639
709
global_set_log_function.argtypes = [log_func]
640
710
global_set_log_function.restype = None
641
711
642
712
deinit = _library.gnutls_deinit
643
713
deinit.argtypes = [session_t]
644
714
deinit.restype = None
645
715
646
716
handshake = _library.gnutls_handshake
647
717
handshake.argtypes = [session_t]
648
718
handshake.restype = _error_code
649
719
handshake.errcheck = _retry_on_error
650
720
651
721
transport_set_ptr = _library.gnutls_transport_set_ptr
652
722
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
653
723
transport_set_ptr.restype = None
654
724
655
725
bye = _library.gnutls_bye
656
726
bye.argtypes = [session_t, close_request_t]
657
727
bye.restype = _error_code
658
728
bye.errcheck = _retry_on_error
659
729
660
730
check_version = _library.gnutls_check_version
661
731
check_version.argtypes = [ctypes.c_char_p]
662
732
check_version.restype = ctypes.c_char_p
663
733
664
734
# All the function declarations below are from gnutls/openpgp.h
665
735
666
736
openpgp_crt_init = _library.gnutls_openpgp_crt_init
667
737
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
668
738
openpgp_crt_init.restype = _error_code
669
739
670
740
openpgp_crt_import = _library.gnutls_openpgp_crt_import
671
741
openpgp_crt_import.argtypes = [openpgp_crt_t,
672
742
ctypes.POINTER(datum_t),
673
743
openpgp_crt_fmt_t]
674
744
openpgp_crt_import.restype = _error_code
675
745
676
746
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
677
747
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
678
748
ctypes.POINTER(ctypes.c_uint)]
679
749
openpgp_crt_verify_self.restype = _error_code
680
750
681
751
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
682
752
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
683
753
openpgp_crt_deinit.restype = None
684
754
685
755
openpgp_crt_get_fingerprint = (
686
756
_library.gnutls_openpgp_crt_get_fingerprint)
687
757
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
689
759
ctypes.POINTER(
690
760
ctypes.c_size_t)]
691
761
openpgp_crt_get_fingerprint.restype = _error_code
692
762
693
763
# Remove non-public functions
694
764
del _error_code, _retry_on_error
695
765
# Create the global "gnutls" object, simulating a module
696
766
gnutls = GnuTLS()
697
767
768
698
769
def call_pipe(connection, # : multiprocessing.Connection
699
770
func, *args, **kwargs):
700
771
"""This function is meant to be called by multiprocessing.Process
701
772
702
773
This function runs func(*args, **kwargs), and writes the resulting
703
774
return value on the provided multiprocessing.Connection.
704
775
"""
705
776
connection.send(func(*args, **kwargs))
706
777
connection.close()
707
778
779
708
780
class Client(object):
709
781
"""A representation of a client host served by this server.
710
782
711
783
Attributes:
712
784
approved: bool(); 'None' if not yet approved/disapproved
713
785
approval_delay: datetime.timedelta(); Time to wait for approval
715
787
checker: subprocess.Popen(); a running checker process used
716
788
to see if the client lives.
717
789
'None' if no process is running.
718
checker_callback_tag: a gobject event source tag, or None
790
checker_callback_tag: a GLib event source tag, or None
719
791
checker_command: string; External command which is run to check
720
792
if client lives. %() expansions are done at
721
793
runtime with vars(self) as dict, so that for
722
794
instance %(name)s can be used in the command.
723
checker_initiator_tag: a gobject event source tag, or None
795
checker_initiator_tag: a GLib event source tag, or None
724
796
created: datetime.datetime(); (UTC) object creation
725
797
client_structure: Object describing what attributes a client has
726
798
and is used for storing the client at exit
727
799
current_checker_command: string; current running checker_command
728
disable_initiator_tag: a gobject event source tag, or None
800
disable_initiator_tag: a GLib event source tag, or None
729
801
enabled: bool()
730
802
fingerprint: string (40 or 32 hexadecimal digits); used to
731
803
uniquely identify the client
750
822
disabled, or None
751
823
server_settings: The server_settings dict from main()
752
824
"""
753
825
754
826
runtime_expansions = ("approval_delay", "approval_duration",
755
827
"created", "enabled", "expires",
756
828
"fingerprint", "host", "interval",
767
839
"approved_by_default": "True",
768
840
"enabled": "True",
769
841
}
770
842
771
843
@staticmethod
772
844
def config_parser(config):
773
845
"""Construct a new dict of client settings of this form:
780
852
for client_name in config.sections():
781
853
section = dict(config.items(client_name))
782
854
client = settings[client_name] = {}
783
855
784
856
client["host"] = section["host"]
785
857
# Reformat values from string types to Python types
786
858
client["approved_by_default"] = config.getboolean(
787
859
client_name, "approved_by_default")
788
860
client["enabled"] = config.getboolean(client_name,
789
861
"enabled")
790
862
791
863
# Uppercase and remove spaces from fingerprint for later
792
864
# comparison purposes with return value from the
793
865
# fingerprint() function
794
866
client["fingerprint"] = (section["fingerprint"].upper()
795
867
.replace(" ", ""))
796
868
if "secret" in section:
797
client["secret"] = section["secret"].decode("base64")
869
client["secret"] = codecs.decode(section["secret"]
870
.encode("utf-8"),
871
"base64")
798
872
elif "secfile" in section:
799
873
with open(os.path.expanduser(os.path.expandvars
800
874
(section["secfile"])),
815
889
client["last_approval_request"] = None
816
890
client["last_checked_ok"] = None
817
891
client["last_checker_status"] = -2
818
892
819
893
return settings
820
821
def __init__(self, settings, name = None, server_settings=None):
894
895
def __init__(self, settings, name=None, server_settings=None):
822
896
self.name = name
823
897
if server_settings is None:
824
898
server_settings = {}
826
900
# adding all client settings
827
901
for setting, value in settings.items():
828
902
setattr(self, setting, value)
829
903
830
904
if self.enabled:
831
905
if not hasattr(self, "last_enabled"):
832
906
self.last_enabled = datetime.datetime.utcnow()
836
910
else:
837
911
self.last_enabled = None
838
912
self.expires = None
839
913
840
914
logger.debug("Creating client %r", self.name)
841
915
logger.debug(" Fingerprint: %s", self.fingerprint)
842
916
self.created = settings.get("created",
843
917
datetime.datetime.utcnow())
844
918
845
919
# attributes specific for this server instance
846
920
self.checker = None
847
921
self.checker_initiator_tag = None
853
927
self.changedstate = multiprocessing_manager.Condition(
854
928
multiprocessing_manager.Lock())
855
929
self.client_structure = [attr
856
for attr in self.__dict__.iterkeys()
930
for attr in self.__dict__.keys()
857
931
if not attr.startswith("_")]
858
932
self.client_structure.append("client_structure")
859
933
860
934
for name, t in inspect.getmembers(
861
935
type(self), lambda obj: isinstance(obj, property)):
862
936
if not name.startswith("_"):
863
937
self.client_structure.append(name)
864
938
865
939
# Send notice to process children that client state has changed
866
940
def send_changedstate(self):
867
941
with self.changedstate:
868
942
self.changedstate.notify_all()
869
943
870
944
def enable(self):
871
945
"""Start this client's checker and timeout hooks"""
872
946
if getattr(self, "enabled", False):
877
951
self.last_enabled = datetime.datetime.utcnow()
878
952
self.init_checker()
879
953
self.send_changedstate()
880
954
881
955
def disable(self, quiet=True):
882
956
"""Disable this client."""
883
957
if not getattr(self, "enabled", False):
885
959
if not quiet:
886
960
logger.info("Disabling client %s", self.name)
887
961
if getattr(self, "disable_initiator_tag", None) is not None:
888
gobject.source_remove(self.disable_initiator_tag)
962
GLib.source_remove(self.disable_initiator_tag)
889
963
self.disable_initiator_tag = None
890
964
self.expires = None
891
965
if getattr(self, "checker_initiator_tag", None) is not None:
892
gobject.source_remove(self.checker_initiator_tag)
966
GLib.source_remove(self.checker_initiator_tag)
893
967
self.checker_initiator_tag = None
894
968
self.stop_checker()
895
969
self.enabled = False
896
970
if not quiet:
897
971
self.send_changedstate()
898
# Do not run this again if called by a gobject.timeout_add
972
# Do not run this again if called by a GLib.timeout_add
899
973
return False
900
974
901
975
def __del__(self):
902
976
self.disable()
903
977
904
978
def init_checker(self):
905
979
# Schedule a new checker to be started an 'interval' from now,
906
980
# and every interval from then on.
907
981
if self.checker_initiator_tag is not None:
908
gobject.source_remove(self.checker_initiator_tag)
909
self.checker_initiator_tag = gobject.timeout_add(
982
GLib.source_remove(self.checker_initiator_tag)
983
self.checker_initiator_tag = GLib.timeout_add(
910
984
int(self.interval.total_seconds() * 1000),
911
985
self.start_checker)
912
986
# Schedule a disable() when 'timeout' has passed
913
987
if self.disable_initiator_tag is not None:
914
gobject.source_remove(self.disable_initiator_tag)
915
self.disable_initiator_tag = gobject.timeout_add(
988
GLib.source_remove(self.disable_initiator_tag)
989
self.disable_initiator_tag = GLib.timeout_add(
916
990
int(self.timeout.total_seconds() * 1000), self.disable)
917
991
# Also start a new checker *right now*.
918
992
self.start_checker()
919
993
920
994
def checker_callback(self, source, condition, connection,
921
995
command):
922
996
"""The checker has completed, so take appropriate actions."""
925
999
# Read return code from connection (see call_pipe)
926
1000
returncode = connection.recv()
927
1001
connection.close()
928
1002
929
1003
if returncode >= 0:
930
1004
self.last_checker_status = returncode
931
1005
self.last_checker_signal = None
941
1015
logger.warning("Checker for %(name)s crashed?",
942
1016
vars(self))
943
1017
return False
944
1018
945
1019
def checked_ok(self):
946
1020
"""Assert that the client has been seen, alive and well."""
947
1021
self.last_checked_ok = datetime.datetime.utcnow()
948
1022
self.last_checker_status = 0
949
1023
self.last_checker_signal = None
950
1024
self.bump_timeout()
951
1025
952
1026
def bump_timeout(self, timeout=None):
953
1027
"""Bump up the timeout for this client."""
954
1028
if timeout is None:
955
1029
timeout = self.timeout
956
1030
if self.disable_initiator_tag is not None:
957
gobject.source_remove(self.disable_initiator_tag)
1031
GLib.source_remove(self.disable_initiator_tag)
958
1032
self.disable_initiator_tag = None
959
1033
if getattr(self, "enabled", False):
960
self.disable_initiator_tag = gobject.timeout_add(
1034
self.disable_initiator_tag = GLib.timeout_add(
961
1035
int(timeout.total_seconds() * 1000), self.disable)
962
1036
self.expires = datetime.datetime.utcnow() + timeout
963
1037
964
1038
def need_approval(self):
965
1039
self.last_approval_request = datetime.datetime.utcnow()
966
1040
967
1041
def start_checker(self):
968
1042
"""Start a new checker subprocess if one is not running.
969
1043
970
1044
If a checker already exists, leave it running and do
971
1045
nothing."""
972
1046
# The reason for not killing a running checker is that if we
977
1051
# checkers alone, the checker would have to take more time
978
1052
# than 'timeout' for the client to be disabled, which is as it
979
1053
# should be.
980
1054
981
1055
if self.checker is not None and not self.checker.is_alive():
982
1056
logger.warning("Checker was not alive; joining")
983
1057
self.checker.join()
987
1061
# Escape attributes for the shell
988
1062
escaped_attrs = {
989
1063
attr: re.escape(str(getattr(self, attr)))
990
for attr in self.runtime_expansions }
1064
for attr in self.runtime_expansions}
991
1065
try:
992
1066
command = self.checker_command % escaped_attrs
993
1067
except TypeError as error:
1005
1079
# The exception is when not debugging but nevertheless
1006
1080
# running in the foreground; use the previously
1007
1081
# created wnull.
1008
popen_args = { "close_fds": True,
1009
"shell": True,
1010
"cwd": "/" }
1082
popen_args = {"close_fds": True,
1083
"shell": True,
1084
"cwd": "/"}
1011
1085
if (not self.server_settings["debug"]
1012
1086
and self.server_settings["foreground"]):
1013
1087
popen_args.update({"stdout": wnull,
1014
"stderr": wnull })
1015
pipe = multiprocessing.Pipe(duplex = False)
1088
"stderr": wnull})
1089
pipe = multiprocessing.Pipe(duplex=False)
1016
1090
self.checker = multiprocessing.Process(
1017
target = call_pipe,
1018
args = (pipe[1], subprocess.call, command),
1019
kwargs = popen_args)
1091
target=call_pipe,
1092
args=(pipe[1], subprocess.call, command),
1093
kwargs=popen_args)
1020
1094
self.checker.start()
1021
self.checker_callback_tag = gobject.io_add_watch(
1022
pipe[0].fileno(), gobject.IO_IN,
1095
self.checker_callback_tag = GLib.io_add_watch(
1096
pipe[0].fileno(), GLib.IO_IN,
1023
1097
self.checker_callback, pipe[0], command)
1024
# Re-run this periodically if run by gobject.timeout_add
1098
# Re-run this periodically if run by GLib.timeout_add
1025
1099
return True
1026
1100
1027
1101
def stop_checker(self):
1028
1102
"""Force the checker process, if any, to stop."""
1029
1103
if self.checker_callback_tag:
1030
gobject.source_remove(self.checker_callback_tag)
1104
GLib.source_remove(self.checker_callback_tag)
1031
1105
self.checker_callback_tag = None
1032
1106
if getattr(self, "checker", None) is None:
1033
1107
return
1042
1116
byte_arrays=False):
1043
1117
"""Decorators for marking methods of a DBusObjectWithProperties to
1044
1118
become properties on the D-Bus.
1045
1119
1046
1120
The decorated method will be called with no arguments by "Get"
1047
1121
and with one argument by "Set".
1048
1122
1049
1123
The parameters, where they are supported, are the same as
1050
1124
dbus.service.method, except there is only "signature", since the
1051
1125
type from Get() and the type sent to Set() is the same.
1055
1129
if byte_arrays and signature != "ay":
1056
1130
raise ValueError("Byte arrays not supported for non-'ay'"
1057
1131
" signature {!r}".format(signature))
1058
1132
1059
1133
def decorator(func):
1060
1134
func._dbus_is_property = True
1061
1135
func._dbus_interface = dbus_interface
1064
1138
func._dbus_name = func.__name__
1065
1139
if func._dbus_name.endswith("_dbus_property"):
1066
1140
func._dbus_name = func._dbus_name[:-14]
1067
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
1141
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
1068
1142
return func
1069
1143
1070
1144
return decorator
1071
1145
1072
1146
1073
1147
def dbus_interface_annotations(dbus_interface):
1074
1148
"""Decorator for marking functions returning interface annotations
1075
1149
1076
1150
Usage:
1077
1151
1078
1152
@dbus_interface_annotations("org.example.Interface")
1079
1153
def _foo(self): # Function name does not matter
1080
1154
return {"org.freedesktop.DBus.Deprecated": "true",
1081
1155
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1082
1156
"false"}
1083
1157
"""
1084
1158
1085
1159
def decorator(func):
1086
1160
func._dbus_is_interface = True
1087
1161
func._dbus_interface = dbus_interface
1088
1162
func._dbus_name = dbus_interface
1089
1163
return func
1090
1164
1091
1165
return decorator
1092
1166
1093
1167
1094
1168
def dbus_annotations(annotations):
1095
1169
"""Decorator to annotate D-Bus methods, signals or properties
1096
1170
Usage:
1097
1171
1098
1172
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1099
1173
"org.freedesktop.DBus.Property."
1100
1174
"EmitsChangedSignal": "false"})
1102
1176
access="r")
1103
1177
def Property_dbus_property(self):
1104
1178
return dbus.Boolean(False)
1105
1179
1106
1180
See also the DBusObjectWithAnnotations class.
1107
1181
"""
1108
1182
1109
1183
def decorator(func):
1110
1184
func._dbus_annotations = annotations
1111
1185
return func
1112
1186
1113
1187
return decorator
1114
1188
1115
1189
1133
1207
1134
1208
class DBusObjectWithAnnotations(dbus.service.Object):
1135
1209
"""A D-Bus object with annotations.
1136
1210
1137
1211
Classes inheriting from this can use the dbus_annotations
1138
1212
decorator to add annotations to methods or signals.
1139
1213
"""
1140
1214
1141
1215
@staticmethod
1142
1216
def _is_dbus_thing(thing):
1143
1217
"""Returns a function testing if an attribute is a D-Bus thing
1144
1218
1145
1219
If called like _is_dbus_thing("method") it returns a function
1146
1220
suitable for use as predicate to inspect.getmembers().
1147
1221
"""
1148
1222
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1149
1223
False)
1150
1224
1151
1225
def _get_all_dbus_things(self, thing):
1152
1226
"""Returns a generator of (name, attribute) pairs
1153
1227
"""
1156
1230
for cls in self.__class__.__mro__
1157
1231
for name, athing in
1158
1232
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1159
1233
1160
1234
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1161
out_signature = "s",
1162
path_keyword = 'object_path',
1163
connection_keyword = 'connection')
1235
out_signature="s",
1236
path_keyword='object_path',
1237
connection_keyword='connection')
1164
1238
def Introspect(self, object_path, connection):
1165
1239
"""Overloading of standard D-Bus method.
1166
1240
1167
1241
Inserts annotation tags on methods and signals.
1168
1242
"""
1169
1243
xmlstring = dbus.service.Object.Introspect(self, object_path,
1170
1244
connection)
1171
1245
try:
1172
1246
document = xml.dom.minidom.parseString(xmlstring)
1173
1247
1174
1248
for if_tag in document.getElementsByTagName("interface"):
1175
1249
# Add annotation tags
1176
1250
for typ in ("method", "signal"):
1203
1277
if_tag.appendChild(ann_tag)
1204
1278
# Fix argument name for the Introspect method itself
1205
1279
if (if_tag.getAttribute("name")
1206
== dbus.INTROSPECTABLE_IFACE):
1280
== dbus.INTROSPECTABLE_IFACE):
1207
1281
for cn in if_tag.getElementsByTagName("method"):
1208
1282
if cn.getAttribute("name") == "Introspect":
1209
1283
for arg in cn.getElementsByTagName("arg"):
1222
1296
1223
1297
class DBusObjectWithProperties(DBusObjectWithAnnotations):
1224
1298
"""A D-Bus object with properties.
1225
1299
1226
1300
Classes inheriting from this can use the dbus_service_property
1227
1301
decorator to expose methods as D-Bus properties. It exposes the
1228
1302
standard Get(), Set(), and GetAll() methods on the D-Bus.
1229
1303
"""
1230
1304
1231
1305
def _get_dbus_property(self, interface_name, property_name):
1232
1306
"""Returns a bound method if one exists which is a D-Bus
1233
1307
property with the specified name and interface.
1238
1312
if (value._dbus_name == property_name
1239
1313
and value._dbus_interface == interface_name):
1240
1314
return value.__get__(self)
1241
1315
1242
1316
# No such property
1243
1317
raise DBusPropertyNotFound("{}:{}.{}".format(
1244
1318
self.dbus_object_path, interface_name, property_name))
1245
1319
1246
1320
@classmethod
1247
1321
def _get_all_interface_names(cls):
1248
1322
"""Get a sequence of all interfaces supported by an object"""
1251
1325
for x in (inspect.getmro(cls))
1252
1326
for attr in dir(x))
1253
1327
if name is not None)
1254
1328
1255
1329
@dbus.service.method(dbus.PROPERTIES_IFACE,
1256
1330
in_signature="ss",
1257
1331
out_signature="v")
1265
1339
if not hasattr(value, "variant_level"):
1266
1340
return value
1267
1341
return type(value)(value, variant_level=value.variant_level+1)
1268
1342
1269
1343
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
1270
1344
def Set(self, interface_name, property_name, value):
1271
1345
"""Standard D-Bus property Set() method, see D-Bus standard.
1283
1357
value = dbus.ByteArray(b''.join(chr(byte)
1284
1358
for byte in value))
1285
1359
prop(value)
1286
1360
1287
1361
@dbus.service.method(dbus.PROPERTIES_IFACE,
1288
1362
in_signature="s",
1289
1363
out_signature="a{sv}")
1290
1364
def GetAll(self, interface_name):
1291
1365
"""Standard D-Bus property GetAll() method, see D-Bus
1292
1366
standard.
1293
1367
1294
1368
Note: Will not include properties with access="write".
1295
1369
"""
1296
1370
properties = {}
1307
1381
properties[name] = value
1308
1382
continue
1309
1383
properties[name] = type(value)(
1310
value, variant_level = value.variant_level + 1)
1384
value, variant_level=value.variant_level + 1)
1311
1385
return dbus.Dictionary(properties, signature="sv")
1312
1386
1313
1387
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1314
1388
def PropertiesChanged(self, interface_name, changed_properties,
1315
1389
invalidated_properties):
1317
1391
standard.
1318
1392
"""
1319
1393
pass
1320
1394
1321
1395
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1322
1396
out_signature="s",
1323
1397
path_keyword='object_path',
1324
1398
connection_keyword='connection')
1325
1399
def Introspect(self, object_path, connection):
1326
1400
"""Overloading of standard D-Bus method.
1327
1401
1328
1402
Inserts property tags and interface annotation tags.
1329
1403
"""
1330
1404
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1332
1406
connection)
1333
1407
try:
1334
1408
document = xml.dom.minidom.parseString(xmlstring)
1335
1409
1336
1410
def make_tag(document, name, prop):
1337
1411
e = document.createElement("property")
1338
1412
e.setAttribute("name", name)
1339
1413
e.setAttribute("type", prop._dbus_signature)
1340
1414
e.setAttribute("access", prop._dbus_access)
1341
1415
return e
1342
1416
1343
1417
for if_tag in document.getElementsByTagName("interface"):
1344
1418
# Add property tags
1345
1419
for tag in (make_tag(document, name, prop)
1387
1461
exc_info=error)
1388
1462
return xmlstring
1389
1463
1464
1390
1465
try:
1391
1466
dbus.OBJECT_MANAGER_IFACE
1392
1467
except AttributeError:
1393
1468
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1394
1469
1470
1395
1471
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1396
1472
"""A D-Bus object with an ObjectManager.
1397
1473
1398
1474
Classes inheriting from this exposes the standard
1399
1475
GetManagedObjects call and the InterfacesAdded and
1400
1476
InterfacesRemoved signals on the standard
1401
1477
"org.freedesktop.DBus.ObjectManager" interface.
1402
1478
1403
1479
Note: No signals are sent automatically; they must be sent
1404
1480
manually.
1405
1481
"""
1406
1482
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1407
out_signature = "a{oa{sa{sv}}}")
1483
out_signature="a{oa{sa{sv}}}")
1408
1484
def GetManagedObjects(self):
1409
1485
"""This function must be overridden"""
1410
1486
raise NotImplementedError()
1411
1487
1412
1488
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1413
signature = "oa{sa{sv}}")
1489
signature="oa{sa{sv}}")
1414
1490
def InterfacesAdded(self, object_path, interfaces_and_properties):
1415
1491
pass
1416
1417
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature = "oas")
1492
1493
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1418
1494
def InterfacesRemoved(self, object_path, interfaces):
1419
1495
pass
1420
1496
1421
1497
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1422
out_signature = "s",
1423
path_keyword = 'object_path',
1424
connection_keyword = 'connection')
1498
out_signature="s",
1499
path_keyword='object_path',
1500
connection_keyword='connection')
1425
1501
def Introspect(self, object_path, connection):
1426
1502
"""Overloading of standard D-Bus method.
1427
1503
1428
1504
Override return argument name of GetManagedObjects to be
1429
1505
"objpath_interfaces_and_properties"
1430
1506
"""
1433
1509
connection)
1434
1510
try:
1435
1511
document = xml.dom.minidom.parseString(xmlstring)
1436
1512
1437
1513
for if_tag in document.getElementsByTagName("interface"):
1438
1514
# Fix argument name for the GetManagedObjects method
1439
1515
if (if_tag.getAttribute("name")
1440
== dbus.OBJECT_MANAGER_IFACE):
1516
== dbus.OBJECT_MANAGER_IFACE):
1441
1517
for cn in if_tag.getElementsByTagName("method"):
1442
1518
if (cn.getAttribute("name")
1443
1519
== "GetManagedObjects"):
1453
1529
except (AttributeError, xml.dom.DOMException,
1454
1530
xml.parsers.expat.ExpatError) as error:
1455
1531
logger.error("Failed to override Introspection method",
1456
exc_info = error)
1532
exc_info=error)
1457
1533
return xmlstring
1458
1534
1535
1459
1536
def datetime_to_dbus(dt, variant_level=0):
1460
1537
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1461
1538
if dt is None:
1462
return dbus.String("", variant_level = variant_level)
1539
return dbus.String("", variant_level=variant_level)
1463
1540
return dbus.String(dt.isoformat(), variant_level=variant_level)
1464
1541
1465
1542
1468
1545
dbus.service.Object, it will add alternate D-Bus attributes with
1469
1546
interface names according to the "alt_interface_names" mapping.
1470
1547
Usage:
1471
1548
1472
1549
@alternate_dbus_interfaces({"org.example.Interface":
1473
1550
"net.example.AlternateInterface"})
1474
1551
class SampleDBusObject(dbus.service.Object):
1475
1552
@dbus.service.method("org.example.Interface")
1476
1553
def SampleDBusMethod():
1477
1554
pass
1478
1555
1479
1556
The above "SampleDBusMethod" on "SampleDBusObject" will be
1480
1557
reachable via two interfaces: "org.example.Interface" and
1481
1558
"net.example.AlternateInterface", the latter of which will have
1482
1559
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1483
1560
"true", unless "deprecate" is passed with a False value.
1484
1561
1485
1562
This works for methods and signals, and also for D-Bus properties
1486
1563
(from DBusObjectWithProperties) and interfaces (from the
1487
1564
dbus_interface_annotations decorator).
1488
1565
"""
1489
1566
1490
1567
def wrapper(cls):
1491
1568
for orig_interface_name, alt_interface_name in (
1492
1569
alt_interface_names.items()):
1507
1584
interface_names.add(alt_interface)
1508
1585
# Is this a D-Bus signal?
1509
1586
if getattr(attribute, "_dbus_is_signal", False):
1587
# Extract the original non-method undecorated
1588
# function by black magic
1510
1589
if sys.version_info.major == 2:
1511
# Extract the original non-method undecorated
1512
# function by black magic
1513
1590
nonmethod_func = (dict(
1514
1591
zip(attribute.func_code.co_freevars,
1515
1592
attribute.__closure__))
1516
1593
["func"].cell_contents)
1517
1594
else:
1518
nonmethod_func = attribute
1595
nonmethod_func = (dict(
1596
zip(attribute.__code__.co_freevars,
1597
attribute.__closure__))
1598
["func"].cell_contents)
1519
1599
# Create a new, but exactly alike, function
1520
1600
# object, and decorate it to be a new D-Bus signal
1521
1601
# with the alternate D-Bus interface name
1522
if sys.version_info.major == 2:
1523
new_function = types.FunctionType(
1524
nonmethod_func.func_code,
1525
nonmethod_func.func_globals,
1526
nonmethod_func.func_name,
1527
nonmethod_func.func_defaults,
1528
nonmethod_func.func_closure)
1529
else:
1530
new_function = types.FunctionType(
1531
nonmethod_func.__code__,
1532
nonmethod_func.__globals__,
1533
nonmethod_func.__name__,
1534
nonmethod_func.__defaults__,
1535
nonmethod_func.__closure__)
1602
new_function = copy_function(nonmethod_func)
1536
1603
new_function = (dbus.service.signal(
1537
1604
alt_interface,
1538
1605
attribute._dbus_signature)(new_function))
1542
1609
attribute._dbus_annotations)
1543
1610
except AttributeError:
1544
1611
pass
1612
1545
1613
# Define a creator of a function to call both the
1546
1614
# original and alternate functions, so both the
1547
1615
# original and alternate signals gets sent when
1550
1618
"""This function is a scope container to pass
1551
1619
func1 and func2 to the "call_both" function
1552
1620
outside of its arguments"""
1553
1621
1554
1622
@functools.wraps(func2)
1555
1623
def call_both(*args, **kwargs):
1556
1624
"""This function will emit two D-Bus
1557
1625
signals by calling func1 and func2"""
1558
1626
func1(*args, **kwargs)
1559
1627
func2(*args, **kwargs)
1560
# Make wrapper function look like a D-Bus signal
1628
# Make wrapper function look like a D-Bus
1629
# signal
1561
1630
for name, attr in inspect.getmembers(func2):
1562
1631
if name.startswith("_dbus_"):
1563
1632
setattr(call_both, name, attr)
1564
1633
1565
1634
return call_both
1566
1635
# Create the "call_both" function and add it to
1567
1636
# the class
1577
1646
alt_interface,
1578
1647
attribute._dbus_in_signature,
1579
1648
attribute._dbus_out_signature)
1580
(types.FunctionType(attribute.func_code,
1581
attribute.func_globals,
1582
attribute.func_name,
1583
attribute.func_defaults,
1584
attribute.func_closure)))
1649
(copy_function(attribute)))
1585
1650
# Copy annotations, if any
1586
1651
try:
1587
1652
attr[attrname]._dbus_annotations = dict(
1599
1664
attribute._dbus_access,
1600
1665
attribute._dbus_get_args_options
1601
1666
["byte_arrays"])
1602
(types.FunctionType(
1603
attribute.func_code,
1604
attribute.func_globals,
1605
attribute.func_name,
1606
attribute.func_defaults,
1607
attribute.func_closure)))
1667
(copy_function(attribute)))
1608
1668
# Copy annotations, if any
1609
1669
try:
1610
1670
attr[attrname]._dbus_annotations = dict(
1619
1679
# to the class.
1620
1680
attr[attrname] = (
1621
1681
dbus_interface_annotations(alt_interface)
1622
(types.FunctionType(attribute.func_code,
1623
attribute.func_globals,
1624
attribute.func_name,
1625
attribute.func_defaults,
1626
attribute.func_closure)))
1682
(copy_function(attribute)))
1627
1683
if deprecate:
1628
1684
# Deprecate all alternate interfaces
1629
iname="_AlternateDBusNames_interface_annotation{}"
1685
iname = "_AlternateDBusNames_interface_annotation{}"
1630
1686
for interface_name in interface_names:
1631
1687
1632
1688
@dbus_interface_annotations(interface_name)
1633
1689
def func(self):
1634
return { "org.freedesktop.DBus.Deprecated":
1635
"true" }
1690
return {"org.freedesktop.DBus.Deprecated":
1691
"true"}
1636
1692
# Find an unused name
1637
1693
for aname in (iname.format(i)
1638
1694
for i in itertools.count()):
1642
1698
if interface_names:
1643
1699
# Replace the class with a new subclass of it with
1644
1700
# methods, signals, etc. as created above.
1645
cls = type(b"{}Alternate".format(cls.__name__),
1646
(cls, ), attr)
1701
if sys.version_info.major == 2:
1702
cls = type(b"{}Alternate".format(cls.__name__),
1703
(cls, ), attr)
1704
else:
1705
cls = type("{}Alternate".format(cls.__name__),
1706
(cls, ), attr)
1647
1707
return cls
1648
1708
1649
1709
return wrapper
1650
1710
1651
1711
1653
1713
"se.bsnet.fukt.Mandos"})
1654
1714
class ClientDBus(Client, DBusObjectWithProperties):
1655
1715
"""A Client class using D-Bus
1656
1716
1657
1717
Attributes:
1658
1718
dbus_object_path: dbus.ObjectPath
1659
1719
bus: dbus.SystemBus()
1660
1720
"""
1661
1721
1662
1722
runtime_expansions = (Client.runtime_expansions
1663
1723
+ ("dbus_object_path", ))
1664
1724
1665
1725
_interface = "se.recompile.Mandos.Client"
1666
1726
1667
1727
# dbus.service.Object doesn't use super(), so we can't either.
1668
1669
def __init__(self, bus = None, *args, **kwargs):
1728
1729
def __init__(self, bus=None, *args, **kwargs):
1670
1730
self.bus = bus
1671
1731
Client.__init__(self, *args, **kwargs)
1672
1732
# Only now, when this client is initialized, can it show up on
1678
1738
"/clients/" + client_object_name)
1679
1739
DBusObjectWithProperties.__init__(self, self.bus,
1680
1740
self.dbus_object_path)
1681
1741
1682
1742
def notifychangeproperty(transform_func, dbus_name,
1683
1743
type_func=lambda x: x,
1684
1744
variant_level=1,
1686
1746
_interface=_interface):
1687
1747
""" Modify a variable so that it's a property which announces
1688
1748
its changes to DBus.
1689
1749
1690
1750
transform_fun: Function that takes a value and a variant_level
1691
1751
and transforms it to a D-Bus type.
1692
1752
dbus_name: D-Bus name of the variable
1695
1755
variant_level: D-Bus variant level. Default: 1
1696
1756
"""
1697
1757
attrname = "_{}".format(dbus_name)
1698
1758
1699
1759
def setter(self, value):
1700
1760
if hasattr(self, "dbus_object_path"):
1701
1761
if (not hasattr(self, attrname) or
1708
1768
else:
1709
1769
dbus_value = transform_func(
1710
1770
type_func(value),
1711
variant_level = variant_level)
1771
variant_level=variant_level)
1712
1772
self.PropertyChanged(dbus.String(dbus_name),
1713
1773
dbus_value)
1714
1774
self.PropertiesChanged(
1715
1775
_interface,
1716
dbus.Dictionary({ dbus.String(dbus_name):
1717
dbus_value }),
1776
dbus.Dictionary({dbus.String(dbus_name):
1777
dbus_value}),
1718
1778
dbus.Array())
1719
1779
setattr(self, attrname, value)
1720
1780
1721
1781
return property(lambda self: getattr(self, attrname), setter)
1722
1782
1723
1783
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1724
1784
approvals_pending = notifychangeproperty(dbus.Boolean,
1725
1785
"ApprovalPending",
1726
type_func = bool)
1786
type_func=bool)
1727
1787
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1728
1788
last_enabled = notifychangeproperty(datetime_to_dbus,
1729
1789
"LastEnabled")
1730
1790
checker = notifychangeproperty(
1731
1791
dbus.Boolean, "CheckerRunning",
1732
type_func = lambda checker: checker is not None)
1792
type_func=lambda checker: checker is not None)
1733
1793
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1734
1794
"LastCheckedOK")
1735
1795
last_checker_status = notifychangeproperty(dbus.Int16,
1740
1800
"ApprovedByDefault")
1741
1801
approval_delay = notifychangeproperty(
1742
1802
dbus.UInt64, "ApprovalDelay",
1743
type_func = lambda td: td.total_seconds() * 1000)
1803
type_func=lambda td: td.total_seconds() * 1000)
1744
1804
approval_duration = notifychangeproperty(
1745
1805
dbus.UInt64, "ApprovalDuration",
1746
type_func = lambda td: td.total_seconds() * 1000)
1806
type_func=lambda td: td.total_seconds() * 1000)
1747
1807
host = notifychangeproperty(dbus.String, "Host")
1748
1808
timeout = notifychangeproperty(
1749
1809
dbus.UInt64, "Timeout",
1750
type_func = lambda td: td.total_seconds() * 1000)
1810
type_func=lambda td: td.total_seconds() * 1000)
1751
1811
extended_timeout = notifychangeproperty(
1752
1812
dbus.UInt64, "ExtendedTimeout",
1753
type_func = lambda td: td.total_seconds() * 1000)
1813
type_func=lambda td: td.total_seconds() * 1000)
1754
1814
interval = notifychangeproperty(
1755
1815
dbus.UInt64, "Interval",
1756
type_func = lambda td: td.total_seconds() * 1000)
1816
type_func=lambda td: td.total_seconds() * 1000)
1757
1817
checker_command = notifychangeproperty(dbus.String, "Checker")
1758
1818
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1759
1819
invalidate_only=True)
1760
1820
1761
1821
del notifychangeproperty
1762
1822
1763
1823
def __del__(self, *args, **kwargs):
1764
1824
try:
1765
1825
self.remove_from_connection()
1768
1828
if hasattr(DBusObjectWithProperties, "__del__"):
1769
1829
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1770
1830
Client.__del__(self, *args, **kwargs)
1771
1831
1772
1832
def checker_callback(self, source, condition,
1773
1833
connection, command, *args, **kwargs):
1774
1834
ret = Client.checker_callback(self, source, condition,
1790
1850
| self.last_checker_signal),
1791
1851
dbus.String(command))
1792
1852
return ret
1793
1853
1794
1854
def start_checker(self, *args, **kwargs):
1795
1855
old_checker_pid = getattr(self.checker, "pid", None)
1796
1856
r = Client.start_checker(self, *args, **kwargs)
1800
1860
# Emit D-Bus signal
1801
1861
self.CheckerStarted(self.current_checker_command)
1802
1862
return r
1803
1863
1804
1864
def _reset_approved(self):
1805
1865
self.approved = None
1806
1866
return False
1807
1867
1808
1868
def approve(self, value=True):
1809
1869
self.approved = value
1810
gobject.timeout_add(int(self.approval_duration.total_seconds()
1811
* 1000), self._reset_approved)
1870
GLib.timeout_add(int(self.approval_duration.total_seconds()
1871
* 1000), self._reset_approved)
1812
1872
self.send_changedstate()
1813
1814
## D-Bus methods, signals & properties
1815
1816
## Interfaces
1817
1818
## Signals
1819
1873
1874
# D-Bus methods, signals & properties
1875
1876
# Interfaces
1877
1878
# Signals
1879
1820
1880
# CheckerCompleted - signal
1821
1881
@dbus.service.signal(_interface, signature="nxs")
1822
1882
def CheckerCompleted(self, exitcode, waitstatus, command):
1823
1883
"D-Bus signal"
1824
1884
pass
1825
1885
1826
1886
# CheckerStarted - signal
1827
1887
@dbus.service.signal(_interface, signature="s")
1828
1888
def CheckerStarted(self, command):
1829
1889
"D-Bus signal"
1830
1890
pass
1831
1891
1832
1892
# PropertyChanged - signal
1833
1893
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1834
1894
@dbus.service.signal(_interface, signature="sv")
1835
1895
def PropertyChanged(self, property, value):
1836
1896
"D-Bus signal"
1837
1897
pass
1838
1898
1839
1899
# GotSecret - signal
1840
1900
@dbus.service.signal(_interface)
1841
1901
def GotSecret(self):
1844
1904
server to mandos-client
1845
1905
"""
1846
1906
pass
1847
1907
1848
1908
# Rejected - signal
1849
1909
@dbus.service.signal(_interface, signature="s")
1850
1910
def Rejected(self, reason):
1851
1911
"D-Bus signal"
1852
1912
pass
1853
1913
1854
1914
# NeedApproval - signal
1855
1915
@dbus.service.signal(_interface, signature="tb")
1856
1916
def NeedApproval(self, timeout, default):
1857
1917
"D-Bus signal"
1858
1918
return self.need_approval()
1859
1860
## Methods
1861
1919
1920
# Methods
1921
1862
1922
# Approve - method
1863
1923
@dbus.service.method(_interface, in_signature="b")
1864
1924
def Approve(self, value):
1865
1925
self.approve(value)
1866
1926
1867
1927
# CheckedOK - method
1868
1928
@dbus.service.method(_interface)
1869
1929
def CheckedOK(self):
1870
1930
self.checked_ok()
1871
1931
1872
1932
# Enable - method
1873
1933
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1874
1934
@dbus.service.method(_interface)
1875
1935
def Enable(self):
1876
1936
"D-Bus method"
1877
1937
self.enable()
1878
1938
1879
1939
# StartChecker - method
1880
1940
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1881
1941
@dbus.service.method(_interface)
1882
1942
def StartChecker(self):
1883
1943
"D-Bus method"
1884
1944
self.start_checker()
1885
1945
1886
1946
# Disable - method
1887
1947
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1888
1948
@dbus.service.method(_interface)
1889
1949
def Disable(self):
1890
1950
"D-Bus method"
1891
1951
self.disable()
1892
1952
1893
1953
# StopChecker - method
1894
1954
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1895
1955
@dbus.service.method(_interface)
1896
1956
def StopChecker(self):
1897
1957
self.stop_checker()
1898
1899
## Properties
1900
1958
1959
# Properties
1960
1901
1961
# ApprovalPending - property
1902
1962
@dbus_service_property(_interface, signature="b", access="read")
1903
1963
def ApprovalPending_dbus_property(self):
1904
1964
return dbus.Boolean(bool(self.approvals_pending))
1905
1965
1906
1966
# ApprovedByDefault - property
1907
1967
@dbus_service_property(_interface,
1908
1968
signature="b",
1911
1971
if value is None: # get
1912
1972
return dbus.Boolean(self.approved_by_default)
1913
1973
self.approved_by_default = bool(value)
1914
1974
1915
1975
# ApprovalDelay - property
1916
1976
@dbus_service_property(_interface,
1917
1977
signature="t",
1921
1981
return dbus.UInt64(self.approval_delay.total_seconds()
1922
1982
* 1000)
1923
1983
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1924
1984
1925
1985
# ApprovalDuration - property
1926
1986
@dbus_service_property(_interface,
1927
1987
signature="t",
1931
1991
return dbus.UInt64(self.approval_duration.total_seconds()
1932
1992
* 1000)
1933
1993
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1934
1994
1935
1995
# Name - property
1936
1996
@dbus_annotations(
1937
1997
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1938
1998
@dbus_service_property(_interface, signature="s", access="read")
1939
1999
def Name_dbus_property(self):
1940
2000
return dbus.String(self.name)
1941
2001
1942
2002
# Fingerprint - property
1943
2003
@dbus_annotations(
1944
2004
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1945
2005
@dbus_service_property(_interface, signature="s", access="read")
1946
2006
def Fingerprint_dbus_property(self):
1947
2007
return dbus.String(self.fingerprint)
1948
2008
1949
2009
# Host - property
1950
2010
@dbus_service_property(_interface,
1951
2011
signature="s",
1954
2014
if value is None: # get
1955
2015
return dbus.String(self.host)
1956
2016
self.host = str(value)
1957
2017
1958
2018
# Created - property
1959
2019
@dbus_annotations(
1960
2020
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1961
2021
@dbus_service_property(_interface, signature="s", access="read")
1962
2022
def Created_dbus_property(self):
1963
2023
return datetime_to_dbus(self.created)
1964
2024
1965
2025
# LastEnabled - property
1966
2026
@dbus_service_property(_interface, signature="s", access="read")
1967
2027
def LastEnabled_dbus_property(self):
1968
2028
return datetime_to_dbus(self.last_enabled)
1969
2029
1970
2030
# Enabled - property
1971
2031
@dbus_service_property(_interface,
1972
2032
signature="b",
1978
2038
self.enable()
1979
2039
else:
1980
2040
self.disable()
1981
2041
1982
2042
# LastCheckedOK - property
1983
2043
@dbus_service_property(_interface,
1984
2044
signature="s",
1988
2048
self.checked_ok()
1989
2049
return
1990
2050
return datetime_to_dbus(self.last_checked_ok)
1991
2051
1992
2052
# LastCheckerStatus - property
1993
2053
@dbus_service_property(_interface, signature="n", access="read")
1994
2054
def LastCheckerStatus_dbus_property(self):
1995
2055
return dbus.Int16(self.last_checker_status)
1996
2056
1997
2057
# Expires - property
1998
2058
@dbus_service_property(_interface, signature="s", access="read")
1999
2059
def Expires_dbus_property(self):
2000
2060
return datetime_to_dbus(self.expires)
2001
2061
2002
2062
# LastApprovalRequest - property
2003
2063
@dbus_service_property(_interface, signature="s", access="read")
2004
2064
def LastApprovalRequest_dbus_property(self):
2005
2065
return datetime_to_dbus(self.last_approval_request)
2006
2066
2007
2067
# Timeout - property
2008
2068
@dbus_service_property(_interface,
2009
2069
signature="t",
2024
2084
if (getattr(self, "disable_initiator_tag", None)
2025
2085
is None):
2026
2086
return
2027
gobject.source_remove(self.disable_initiator_tag)
2028
self.disable_initiator_tag = gobject.timeout_add(
2087
GLib.source_remove(self.disable_initiator_tag)
2088
self.disable_initiator_tag = GLib.timeout_add(
2029
2089
int((self.expires - now).total_seconds() * 1000),
2030
2090
self.disable)
2031
2091
2032
2092
# ExtendedTimeout - property
2033
2093
@dbus_service_property(_interface,
2034
2094
signature="t",
2038
2098
return dbus.UInt64(self.extended_timeout.total_seconds()
2039
2099
* 1000)
2040
2100
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2041
2101
2042
2102
# Interval - property
2043
2103
@dbus_service_property(_interface,
2044
2104
signature="t",
2051
2111
return
2052
2112
if self.enabled:
2053
2113
# Reschedule checker run
2054
gobject.source_remove(self.checker_initiator_tag)
2055
self.checker_initiator_tag = gobject.timeout_add(
2114
GLib.source_remove(self.checker_initiator_tag)
2115
self.checker_initiator_tag = GLib.timeout_add(
2056
2116
value, self.start_checker)
2057
self.start_checker() # Start one now, too
2058
2117
self.start_checker() # Start one now, too
2118
2059
2119
# Checker - property
2060
2120
@dbus_service_property(_interface,
2061
2121
signature="s",
2064
2124
if value is None: # get
2065
2125
return dbus.String(self.checker_command)
2066
2126
self.checker_command = str(value)
2067
2127
2068
2128
# CheckerRunning - property
2069
2129
@dbus_service_property(_interface,
2070
2130
signature="b",
2076
2136
self.start_checker()
2077
2137
else:
2078
2138
self.stop_checker()
2079
2139
2080
2140
# ObjectPath - property
2081
2141
@dbus_annotations(
2082
2142
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2083
2143
"org.freedesktop.DBus.Deprecated": "true"})
2084
2144
@dbus_service_property(_interface, signature="o", access="read")
2085
2145
def ObjectPath_dbus_property(self):
2086
return self.dbus_object_path # is already a dbus.ObjectPath
2087
2146
return self.dbus_object_path # is already a dbus.ObjectPath
2147
2088
2148
# Secret = property
2089
2149
@dbus_annotations(
2090
2150
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2095
2155
byte_arrays=True)
2096
2156
def Secret_dbus_property(self, value):
2097
2157
self.secret = bytes(value)
2098
2158
2099
2159
del _interface
2100
2160
2101
2161
2105
2165
self._pipe.send(('init', fpr, address))
2106
2166
if not self._pipe.recv():
2107
2167
raise KeyError(fpr)
2108
2168
2109
2169
def __getattribute__(self, name):
2110
2170
if name == '_pipe':
2111
2171
return super(ProxyClient, self).__getattribute__(name)
2114
2174
if data[0] == 'data':
2115
2175
return data[1]
2116
2176
if data[0] == 'function':
2117
2177
2118
2178
def func(*args, **kwargs):
2119
2179
self._pipe.send(('funcall', name, args, kwargs))
2120
2180
return self._pipe.recv()[1]
2121
2181
2122
2182
return func
2123
2183
2124
2184
def __setattr__(self, name, value):
2125
2185
if name == '_pipe':
2126
2186
return super(ProxyClient, self).__setattr__(name, value)
2129
2189
2130
2190
class ClientHandler(socketserver.BaseRequestHandler, object):
2131
2191
"""A class to handle client connections.
2132
2192
2133
2193
Instantiated once for each connection to handle it.
2134
2194
Note: This will run in its own forked process."""
2135
2195
2136
2196
def handle(self):
2137
2197
with contextlib.closing(self.server.child_pipe) as child_pipe:
2138
2198
logger.info("TCP connection from: %s",
2139
2199
str(self.client_address))
2140
2200
logger.debug("Pipe FD: %d",
2141
2201
self.server.child_pipe.fileno())
2142
2202
2143
2203
session = gnutls.ClientSession(self.request)
2144
2145
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
2146
# "+AES-256-CBC", "+SHA1",
2147
# "+COMP-NULL", "+CTYPE-OPENPGP",
2148
# "+DHE-DSS"))
2204
2205
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2206
# "+AES-256-CBC", "+SHA1",
2207
# "+COMP-NULL", "+CTYPE-OPENPGP",
2208
# "+DHE-DSS"))
2149
2209
# Use a fallback default, since this MUST be set.
2150
2210
priority = self.server.gnutls_priority
2151
2211
if priority is None:
2152
2212
priority = "NORMAL"
2153
gnutls.priority_set_direct(session._c_object, priority,
2213
gnutls.priority_set_direct(session._c_object,
2214
priority.encode("utf-8"),
2154
2215
None)
2155
2216
2156
2217
# Start communication using the Mandos protocol
2157
2218
# Get protocol number
2158
2219
line = self.request.makefile().readline()
2163
2224
except (ValueError, IndexError, RuntimeError) as error:
2164
2225
logger.error("Unknown protocol version: %s", error)
2165
2226
return
2166
2227
2167
2228
# Start GnuTLS connection
2168
2229
try:
2169
2230
session.handshake()
2173
2234
# established. Just abandon the request.
2174
2235
return
2175
2236
logger.debug("Handshake succeeded")
2176
2237
2177
2238
approval_required = False
2178
2239
try:
2179
2240
try:
2183
2244
logger.warning("Bad certificate: %s", error)
2184
2245
return
2185
2246
logger.debug("Fingerprint: %s", fpr)
2186
2247
2187
2248
try:
2188
2249
client = ProxyClient(child_pipe, fpr,
2189
2250
self.client_address)
2190
2251
except KeyError:
2191
2252
return
2192
2253
2193
2254
if client.approval_delay:
2194
2255
delay = client.approval_delay
2195
2256
client.approvals_pending += 1
2196
2257
approval_required = True
2197
2258
2198
2259
while True:
2199
2260
if not client.enabled:
2200
2261
logger.info("Client %s is disabled",
2203
2264
# Emit D-Bus signal
2204
2265
client.Rejected("Disabled")
2205
2266
return
2206
2267
2207
2268
if client.approved or not client.approval_delay:
2208
#We are approved or approval is disabled
2269
# We are approved or approval is disabled
2209
2270
break
2210
2271
elif client.approved is None:
2211
2272
logger.info("Client %s needs approval",
2222
2283
# Emit D-Bus signal
2223
2284
client.Rejected("Denied")
2224
2285
return
2225
2226
#wait until timeout or approved
2286
2287
# wait until timeout or approved
2227
2288
time = datetime.datetime.now()
2228
2289
client.changedstate.acquire()
2229
2290
client.changedstate.wait(delay.total_seconds())
2242
2303
break
2243
2304
else:
2244
2305
delay -= time2 - time
2245
2306
2246
2307
try:
2247
2308
session.send(client.secret)
2248
2309
except gnutls.Error as error:
2249
2310
logger.warning("gnutls send failed",
2250
exc_info = error)
2311
exc_info=error)
2251
2312
return
2252
2313
2253
2314
logger.info("Sending secret to %s", client.name)
2254
2315
# bump the timeout using extended_timeout
2255
2316
client.bump_timeout(client.extended_timeout)
2256
2317
if self.server.use_dbus:
2257
2318
# Emit D-Bus signal
2258
2319
client.GotSecret()
2259
2320
2260
2321
finally:
2261
2322
if approval_required:
2262
2323
client.approvals_pending -= 1
2265
2326
except gnutls.Error as error:
2266
2327
logger.warning("GnuTLS bye failed",
2267
2328
exc_info=error)
2268
2329
2269
2330
@staticmethod
2270
2331
def peer_certificate(session):
2271
2332
"Return the peer's OpenPGP certificate as a bytestring"
2283
2344
return None
2284
2345
cert = cert_list[0]
2285
2346
return ctypes.string_at(cert.data, cert.size)
2286
2347
2287
2348
@staticmethod
2288
2349
def fingerprint(openpgp):
2289
2350
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2322
2383
2323
2384
class MultiprocessingMixIn(object):
2324
2385
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2325
2386
2326
2387
def sub_process_main(self, request, address):
2327
2388
try:
2328
2389
self.finish_request(request, address)
2329
2390
except Exception:
2330
2391
self.handle_error(request, address)
2331
2392
self.close_request(request)
2332
2393
2333
2394
def process_request(self, request, address):
2334
2395
"""Start a new process to process the request."""
2335
proc = multiprocessing.Process(target = self.sub_process_main,
2336
args = (request, address))
2396
proc = multiprocessing.Process(target=self.sub_process_main,
2397
args=(request, address))
2337
2398
proc.start()
2338
2399
return proc
2339
2400
2340
2401
2341
2402
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2342
2403
""" adds a pipe to the MixIn """
2343
2404
2344
2405
def process_request(self, request, client_address):
2345
2406
"""Overrides and wraps the original process_request().
2346
2407
2347
2408
This function creates a new pipe in self.pipe
2348
2409
"""
2349
2410
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2350
2411
2351
2412
proc = MultiprocessingMixIn.process_request(self, request,
2352
2413
client_address)
2353
2414
self.child_pipe.close()
2354
2415
self.add_pipe(parent_pipe, proc)
2355
2416
2356
2417
def add_pipe(self, parent_pipe, proc):
2357
2418
"""Dummy function; override as necessary"""
2358
2419
raise NotImplementedError()
2361
2422
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2362
2423
socketserver.TCPServer, object):
2363
2424
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
2364
2425
2365
2426
Attributes:
2366
2427
enabled: Boolean; whether this server is activated yet
2367
2428
interface: None or a network interface name (string)
2368
2429
use_ipv6: Boolean; to use IPv6 or not
2369
2430
"""
2370
2431
2371
2432
def __init__(self, server_address, RequestHandlerClass,
2372
2433
interface=None,
2373
2434
use_ipv6=True,
2383
2444
self.socketfd = socketfd
2384
2445
# Save the original socket.socket() function
2385
2446
self.socket_socket = socket.socket
2447
2386
2448
# To implement --socket, we monkey patch socket.socket.
2387
#
2449
#
2388
2450
# (When socketserver.TCPServer is a new-style class, we
2389
2451
# could make self.socket into a property instead of monkey
2390
2452
# patching socket.socket.)
2391
#
2453
#
2392
2454
# Create a one-time-only replacement for socket.socket()
2393
2455
@functools.wraps(socket.socket)
2394
2456
def socket_wrapper(*args, **kwargs):
2406
2468
# socket_wrapper(), if socketfd was set.
2407
2469
socketserver.TCPServer.__init__(self, server_address,
2408
2470
RequestHandlerClass)
2409
2471
2410
2472
def server_bind(self):
2411
2473
"""This overrides the normal server_bind() function
2412
2474
to bind to an interface if one was specified, and also NOT to
2413
2475
bind to an address or port if they were not specified."""
2476
global SO_BINDTODEVICE
2414
2477
if self.interface is not None:
2415
2478
if SO_BINDTODEVICE is None:
2416
logger.error("SO_BINDTODEVICE does not exist;"
2417
" cannot bind to interface %s",
2418
self.interface)
2419
else:
2420
try:
2421
self.socket.setsockopt(
2422
socket.SOL_SOCKET, SO_BINDTODEVICE,
2423
(self.interface + "\0").encode("utf-8"))
2424
except socket.error as error:
2425
if error.errno == errno.EPERM:
2426
logger.error("No permission to bind to"
2427
" interface %s", self.interface)
2428
elif error.errno == errno.ENOPROTOOPT:
2429
logger.error("SO_BINDTODEVICE not available;"
2430
" cannot bind to interface %s",
2431
self.interface)
2432
elif error.errno == errno.ENODEV:
2433
logger.error("Interface %s does not exist,"
2434
" cannot bind", self.interface)
2435
else:
2436
raise
2479
# Fall back to a hard-coded value which seems to be
2480
# common enough.
2481
logger.warning("SO_BINDTODEVICE not found, trying 25")
2482
SO_BINDTODEVICE = 25
2483
try:
2484
self.socket.setsockopt(
2485
socket.SOL_SOCKET, SO_BINDTODEVICE,
2486
(self.interface + "\0").encode("utf-8"))
2487
except socket.error as error:
2488
if error.errno == errno.EPERM:
2489
logger.error("No permission to bind to"
2490
" interface %s", self.interface)
2491
elif error.errno == errno.ENOPROTOOPT:
2492
logger.error("SO_BINDTODEVICE not available;"
2493
" cannot bind to interface %s",
2494
self.interface)
2495
elif error.errno == errno.ENODEV:
2496
logger.error("Interface %s does not exist,"
2497
" cannot bind", self.interface)
2498
else:
2499
raise
2437
2500
# Only bind(2) the socket if we really need to.
2438
2501
if self.server_address[0] or self.server_address[1]:
2439
2502
if not self.server_address[0]:
2440
2503
if self.address_family == socket.AF_INET6:
2441
any_address = "::" # in6addr_any
2504
any_address = "::" # in6addr_any
2442
2505
else:
2443
any_address = "0.0.0.0" # INADDR_ANY
2506
any_address = "0.0.0.0" # INADDR_ANY
2444
2507
self.server_address = (any_address,
2445
2508
self.server_address[1])
2446
2509
elif not self.server_address[1]:
2456
2519
2457
2520
class MandosServer(IPv6_TCPServer):
2458
2521
"""Mandos server.
2459
2522
2460
2523
Attributes:
2461
2524
clients: set of Client objects
2462
2525
gnutls_priority GnuTLS priority string
2463
2526
use_dbus: Boolean; to emit D-Bus signals or not
2464
2465
Assumes a gobject.MainLoop event loop.
2527
2528
Assumes a GLib.MainLoop event loop.
2466
2529
"""
2467
2530
2468
2531
def __init__(self, server_address, RequestHandlerClass,
2469
2532
interface=None,
2470
2533
use_ipv6=True,
2480
2543
self.gnutls_priority = gnutls_priority
2481
2544
IPv6_TCPServer.__init__(self, server_address,
2482
2545
RequestHandlerClass,
2483
interface = interface,
2484
use_ipv6 = use_ipv6,
2485
socketfd = socketfd)
2486
2546
interface=interface,
2547
use_ipv6=use_ipv6,
2548
socketfd=socketfd)
2549
2487
2550
def server_activate(self):
2488
2551
if self.enabled:
2489
2552
return socketserver.TCPServer.server_activate(self)
2490
2553
2491
2554
def enable(self):
2492
2555
self.enabled = True
2493
2556
2494
2557
def add_pipe(self, parent_pipe, proc):
2495
2558
# Call "handle_ipc" for both data and EOF events
2496
gobject.io_add_watch(
2559
GLib.io_add_watch(
2497
2560
parent_pipe.fileno(),
2498
gobject.IO_IN | gobject.IO_HUP,
2561
GLib.IO_IN | GLib.IO_HUP,
2499
2562
functools.partial(self.handle_ipc,
2500
parent_pipe = parent_pipe,
2501
proc = proc))
2502
2563
parent_pipe=parent_pipe,
2564
proc=proc))
2565
2503
2566
def handle_ipc(self, source, condition,
2504
2567
parent_pipe=None,
2505
proc = None,
2568
proc=None,
2506
2569
client_object=None):
2507
2570
# error, or the other end of multiprocessing.Pipe has closed
2508
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2571
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2509
2572
# Wait for other process to exit
2510
2573
proc.join()
2511
2574
return False
2512
2575
2513
2576
# Read a request from the child
2514
2577
request = parent_pipe.recv()
2515
2578
command = request[0]
2516
2579
2517
2580
if command == 'init':
2518
fpr = request[1]
2581
fpr = request[1].decode("ascii")
2519
2582
address = request[2]
2520
2521
for c in self.clients.itervalues():
2583
2584
for c in self.clients.values():
2522
2585
if c.fingerprint == fpr:
2523
2586
client = c
2524
2587
break
2531
2594
address[0])
2532
2595
parent_pipe.send(False)
2533
2596
return False
2534
2535
gobject.io_add_watch(
2597
2598
GLib.io_add_watch(
2536
2599
parent_pipe.fileno(),
2537
gobject.IO_IN | gobject.IO_HUP,
2600
GLib.IO_IN | GLib.IO_HUP,
2538
2601
functools.partial(self.handle_ipc,
2539
parent_pipe = parent_pipe,
2540
proc = proc,
2541
client_object = client))
2602
parent_pipe=parent_pipe,
2603
proc=proc,
2604
client_object=client))
2542
2605
parent_pipe.send(True)
2543
2606
# remove the old hook in favor of the new above hook on
2544
2607
# same fileno
2547
2610
funcname = request[1]
2548
2611
args = request[2]
2549
2612
kwargs = request[3]
2550
2613
2551
2614
parent_pipe.send(('data', getattr(client_object,
2552
2615
funcname)(*args,
2553
2616
**kwargs)))
2554
2617
2555
2618
if command == 'getattr':
2556
2619
attrname = request[1]
2557
2620
if isinstance(client_object.__getattribute__(attrname),
2560
2623
else:
2561
2624
parent_pipe.send((
2562
2625
'data', client_object.__getattribute__(attrname)))
2563
2626
2564
2627
if command == 'setattr':
2565
2628
attrname = request[1]
2566
2629
value = request[2]
2567
2630
setattr(client_object, attrname, value)
2568
2631
2569
2632
return True
2570
2633
2571
2634
2572
2635
def rfc3339_duration_to_delta(duration):
2573
2636
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2574
2637
2575
2638
>>> rfc3339_duration_to_delta("P7D")
2576
2639
datetime.timedelta(7)
2577
2640
>>> rfc3339_duration_to_delta("PT60S")
2587
2650
>>> rfc3339_duration_to_delta("P1DT3M20S")
2588
2651
datetime.timedelta(1, 200)
2589
2652
"""
2590
2653
2591
2654
# Parsing an RFC 3339 duration with regular expressions is not
2592
2655
# possible - there would have to be multiple places for the same
2593
2656
# values, like seconds. The current code, while more esoteric, is
2594
2657
# cleaner without depending on a parsing library. If Python had a
2595
2658
# built-in library for parsing we would use it, but we'd like to
2596
2659
# avoid excessive use of external libraries.
2597
2660
2598
2661
# New type for defining tokens, syntax, and semantics all-in-one
2599
2662
Token = collections.namedtuple("Token", (
2600
2663
"regexp", # To match token; if "value" is not None, must have
2633
2696
frozenset((token_year, token_month,
2634
2697
token_day, token_time,
2635
2698
token_week)))
2636
# Define starting values
2637
value = datetime.timedelta() # Value so far
2699
# Define starting values:
2700
# Value so far
2701
value = datetime.timedelta()
2638
2702
found_token = None
2639
followers = frozenset((token_duration, )) # Following valid tokens
2640
s = duration # String left to parse
2703
# Following valid tokens
2704
followers = frozenset((token_duration, ))
2705
# String left to parse
2706
s = duration
2641
2707
# Loop until end token is found
2642
2708
while found_token is not token_end:
2643
2709
# Search for any currently valid tokens
2667
2733
2668
2734
def string_to_delta(interval):
2669
2735
"""Parse a string and return a datetime.timedelta
2670
2736
2671
2737
>>> string_to_delta('7d')
2672
2738
datetime.timedelta(7)
2673
2739
>>> string_to_delta('60s')
2681
2747
>>> string_to_delta('5m 30s')
2682
2748
datetime.timedelta(0, 330)
2683
2749
"""
2684
2750
2685
2751
try:
2686
2752
return rfc3339_duration_to_delta(interval)
2687
2753
except ValueError:
2688
2754
pass
2689
2755
2690
2756
timevalue = datetime.timedelta(0)
2691
2757
for s in interval.split():
2692
2758
try:
2710
2776
return timevalue
2711
2777
2712
2778
2713
def daemon(nochdir = False, noclose = False):
2779
def daemon(nochdir=False, noclose=False):
2714
2780
"""See daemon(3). Standard BSD Unix function.
2715
2781
2716
2782
This should really exist as os.daemon, but it doesn't (yet)."""
2717
2783
if os.fork():
2718
2784
sys.exit()
2736
2802
2737
2803
2738
2804
def main():
2739
2805
2740
2806
##################################################################
2741
2807
# Parsing of options, both command line and config file
2742
2808
2743
2809
parser = argparse.ArgumentParser()
2744
2810
parser.add_argument("-v", "--version", action="version",
2745
version = "%(prog)s {}".format(version),
2811
version="%(prog)s {}".format(version),
2746
2812
help="show version number and exit")
2747
2813
parser.add_argument("-i", "--interface", metavar="IF",
2748
2814
help="Bind to interface IF")
2784
2850
parser.add_argument("--no-zeroconf", action="store_false",
2785
2851
dest="zeroconf", help="Do not use Zeroconf",
2786
2852
default=None)
2787
2853
2788
2854
options = parser.parse_args()
2789
2855
2790
2856
if options.check:
2791
2857
import doctest
2792
2858
fail_count, test_count = doctest.testmod()
2793
2859
sys.exit(os.EX_OK if fail_count == 0 else 1)
2794
2860
2795
2861
# Default values for config file for server-global settings
2796
server_defaults = { "interface": "",
2797
"address": "",
2798
"port": "",
2799
"debug": "False",
2800
"priority":
2801
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2802
":+SIGN-DSA-SHA256",
2803
"servicename": "Mandos",
2804
"use_dbus": "True",
2805
"use_ipv6": "True",
2806
"debuglevel": "",
2807
"restore": "True",
2808
"socket": "",
2809
"statedir": "/var/lib/mandos",
2810
"foreground": "False",
2811
"zeroconf": "True",
2812
}
2813
2862
server_defaults = {"interface": "",
2863
"address": "",
2864
"port": "",
2865
"debug": "False",
2866
"priority":
2867
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2868
":+SIGN-DSA-SHA256",
2869
"servicename": "Mandos",
2870
"use_dbus": "True",
2871
"use_ipv6": "True",
2872
"debuglevel": "",
2873
"restore": "True",
2874
"socket": "",
2875
"statedir": "/var/lib/mandos",
2876
"foreground": "False",
2877
"zeroconf": "True",
2878
}
2879
2814
2880
# Parse config file for server-global settings
2815
2881
server_config = configparser.SafeConfigParser(server_defaults)
2816
2882
del server_defaults
2818
2884
# Convert the SafeConfigParser object to a dict
2819
2885
server_settings = server_config.defaults()
2820
2886
# Use the appropriate methods on the non-string config options
2821
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
2887
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2888
"foreground", "zeroconf"):
2822
2889
server_settings[option] = server_config.getboolean("DEFAULT",
2823
2890
option)
2824
2891
if server_settings["port"]:
2834
2901
server_settings["socket"] = os.dup(server_settings
2835
2902
["socket"])
2836
2903
del server_config
2837
2904
2838
2905
# Override the settings from the config file with command line
2839
2906
# options, if set.
2840
2907
for option in ("interface", "address", "port", "debug",
2858
2925
if server_settings["debug"]:
2859
2926
server_settings["foreground"] = True
2860
2927
# Now we have our good server settings in "server_settings"
2861
2928
2862
2929
##################################################################
2863
2930
2864
2931
if (not server_settings["zeroconf"]
2865
2932
and not (server_settings["port"]
2866
2933
or server_settings["socket"] != "")):
2867
2934
parser.error("Needs port or socket to work without Zeroconf")
2868
2935
2869
2936
# For convenience
2870
2937
debug = server_settings["debug"]
2871
2938
debuglevel = server_settings["debuglevel"]
2875
2942
stored_state_file)
2876
2943
foreground = server_settings["foreground"]
2877
2944
zeroconf = server_settings["zeroconf"]
2878
2945
2879
2946
if debug:
2880
2947
initlogger(debug, logging.DEBUG)
2881
2948
else:
2884
2951
else:
2885
2952
level = getattr(logging, debuglevel.upper())
2886
2953
initlogger(debug, level)
2887
2954
2888
2955
if server_settings["servicename"] != "Mandos":
2889
2956
syslogger.setFormatter(
2890
2957
logging.Formatter('Mandos ({}) [%(process)d]:'
2891
2958
' %(levelname)s: %(message)s'.format(
2892
2959
server_settings["servicename"])))
2893
2960
2894
2961
# Parse config file with clients
2895
2962
client_config = configparser.SafeConfigParser(Client
2896
2963
.client_defaults)
2897
2964
client_config.read(os.path.join(server_settings["configdir"],
2898
2965
"clients.conf"))
2899
2966
2900
2967
global mandos_dbus_service
2901
2968
mandos_dbus_service = None
2902
2969
2903
2970
socketfd = None
2904
2971
if server_settings["socket"] != "":
2905
2972
socketfd = server_settings["socket"]
2921
2988
except IOError as e:
2922
2989
logger.error("Could not open file %r", pidfilename,
2923
2990
exc_info=e)
2924
2925
for name in ("_mandos", "mandos", "nobody"):
2991
2992
for name, group in (("_mandos", "_mandos"),
2993
("mandos", "mandos"),
2994
("nobody", "nogroup")):
2926
2995
try:
2927
2996
uid = pwd.getpwnam(name).pw_uid
2928
gid = pwd.getpwnam(name).pw_gid
2997
gid = pwd.getpwnam(group).pw_gid
2929
2998
break
2930
2999
except KeyError:
2931
3000
continue
2935
3004
try:
2936
3005
os.setgid(gid)
2937
3006
os.setuid(uid)
3007
if debug:
3008
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3009
gid))
2938
3010
except OSError as error:
3011
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3012
.format(uid, gid, os.strerror(error.errno)))
2939
3013
if error.errno != errno.EPERM:
2940
3014
raise
2941
3015
2942
3016
if debug:
2943
3017
# Enable all possible GnuTLS debugging
2944
3018
2945
3019
# "Use a log level over 10 to enable all debugging options."
2946
3020
# - GnuTLS manual
2947
3021
gnutls.global_set_log_level(11)
2948
3022
2949
3023
@gnutls.log_func
2950
3024
def debug_gnutls(level, string):
2951
3025
logger.debug("GnuTLS: %s", string[:-1])
2952
3026
2953
3027
gnutls.global_set_log_function(debug_gnutls)
2954
3028
2955
3029
# Redirect stdin so all checkers get /dev/null
2956
3030
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2957
3031
os.dup2(null, sys.stdin.fileno())
2958
3032
if null > 2:
2959
3033
os.close(null)
2960
3034
2961
3035
# Need to fork before connecting to D-Bus
2962
3036
if not foreground:
2963
3037
# Close all input and output, do double fork, etc.
2964
3038
daemon()
2965
2966
# multiprocessing will use threads, so before we use gobject we
2967
# need to inform gobject that threads will be used.
2968
gobject.threads_init()
2969
3039
3040
# multiprocessing will use threads, so before we use GLib we need
3041
# to inform GLib that threads will be used.
3042
GLib.threads_init()
3043
2970
3044
global main_loop
2971
3045
# From the Avahi example code
2972
3046
DBusGMainLoop(set_as_default=True)
2973
main_loop = gobject.MainLoop()
3047
main_loop = GLib.MainLoop()
2974
3048
bus = dbus.SystemBus()
2975
3049
# End of Avahi example code
2976
3050
if use_dbus:
2989
3063
if zeroconf:
2990
3064
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2991
3065
service = AvahiServiceToSyslog(
2992
name = server_settings["servicename"],
2993
servicetype = "_mandos._tcp",
2994
protocol = protocol,
2995
bus = bus)
3066
name=server_settings["servicename"],
3067
servicetype="_mandos._tcp",
3068
protocol=protocol,
3069
bus=bus)
2996
3070
if server_settings["interface"]:
2997
3071
service.interface = if_nametoindex(
2998
3072
server_settings["interface"].encode("utf-8"))
2999
3073
3000
3074
global multiprocessing_manager
3001
3075
multiprocessing_manager = multiprocessing.Manager()
3002
3076
3003
3077
client_class = Client
3004
3078
if use_dbus:
3005
client_class = functools.partial(ClientDBus, bus = bus)
3006
3079
client_class = functools.partial(ClientDBus, bus=bus)
3080
3007
3081
client_settings = Client.config_parser(client_config)
3008
3082
old_client_settings = {}
3009
3083
clients_data = {}
3010
3084
3011
3085
# This is used to redirect stdout and stderr for checker processes
3012
3086
global wnull
3013
wnull = open(os.devnull, "w") # A writable /dev/null
3087
wnull = open(os.devnull, "w") # A writable /dev/null
3014
3088
# Only used if server is running in foreground but not in debug
3015
3089
# mode
3016
3090
if debug or not foreground:
3017
3091
wnull.close()
3018
3092
3019
3093
# Get client data and settings from last running state.
3020
3094
if server_settings["restore"]:
3021
3095
try:
3022
3096
with open(stored_state_path, "rb") as stored_state:
3023
clients_data, old_client_settings = pickle.load(
3024
stored_state)
3097
if sys.version_info.major == 2:
3098
clients_data, old_client_settings = pickle.load(
3099
stored_state)
3100
else:
3101
bytes_clients_data, bytes_old_client_settings = (
3102
pickle.load(stored_state, encoding="bytes"))
3103
# Fix bytes to strings
3104
# clients_data
3105
# .keys()
3106
clients_data = {(key.decode("utf-8")
3107
if isinstance(key, bytes)
3108
else key): value
3109
for key, value in
3110
bytes_clients_data.items()}
3111
del bytes_clients_data
3112
for key in clients_data:
3113
value = {(k.decode("utf-8")
3114
if isinstance(k, bytes) else k): v
3115
for k, v in
3116
clients_data[key].items()}
3117
clients_data[key] = value
3118
# .client_structure
3119
value["client_structure"] = [
3120
(s.decode("utf-8")
3121
if isinstance(s, bytes)
3122
else s) for s in
3123
value["client_structure"]]
3124
# .name & .host
3125
for k in ("name", "host"):
3126
if isinstance(value[k], bytes):
3127
value[k] = value[k].decode("utf-8")
3128
# old_client_settings
3129
# .keys()
3130
old_client_settings = {
3131
(key.decode("utf-8")
3132
if isinstance(key, bytes)
3133
else key): value
3134
for key, value in
3135
bytes_old_client_settings.items()}
3136
del bytes_old_client_settings
3137
# .host
3138
for value in old_client_settings.values():
3139
if isinstance(value["host"], bytes):
3140
value["host"] = (value["host"]
3141
.decode("utf-8"))
3025
3142
os.remove(stored_state_path)
3026
3143
except IOError as e:
3027
3144
if e.errno == errno.ENOENT:
3035
3152
logger.warning("Could not load persistent state: "
3036
3153
"EOFError:",
3037
3154
exc_info=e)
3038
3155
3039
3156
with PGPEngine() as pgp:
3040
3157
for client_name, client in clients_data.items():
3041
3158
# Skip removed clients
3042
3159
if client_name not in client_settings:
3043
3160
continue
3044
3161
3045
3162
# Decide which value to use after restoring saved state.
3046
3163
# We have three different values: Old config file,
3047
3164
# new config file, and saved state.
3058
3175
client[name] = value
3059
3176
except KeyError:
3060
3177
pass
3061
3178
3062
3179
# Clients who has passed its expire date can still be
3063
3180
# enabled if its last checker was successful. A Client
3064
3181
# whose checker succeeded before we stored its state is
3097
3214
client_name))
3098
3215
client["secret"] = (client_settings[client_name]
3099
3216
["secret"])
3100
3217
3101
3218
# Add/remove clients based on new changes made to config
3102
3219
for client_name in (set(old_client_settings)
3103
3220
- set(client_settings)):
3105
3222
for client_name in (set(client_settings)
3106
3223
- set(old_client_settings)):
3107
3224
clients_data[client_name] = client_settings[client_name]
3108
3225
3109
3226
# Create all client objects
3110
3227
for client_name, client in clients_data.items():
3111
3228
tcp_server.clients[client_name] = client_class(
3112
name = client_name,
3113
settings = client,
3114
server_settings = server_settings)
3115
3229
name=client_name,
3230
settings=client,
3231
server_settings=server_settings)
3232
3116
3233
if not tcp_server.clients:
3117
3234
logger.warning("No clients defined")
3118
3235
3119
3236
if not foreground:
3120
3237
if pidfile is not None:
3121
3238
pid = os.getpid()
3127
3244
pidfilename, pid)
3128
3245
del pidfile
3129
3246
del pidfilename
3130
3131
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
3132
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
3133
3247
3248
for termsig in (signal.SIGHUP, signal.SIGTERM):
3249
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3250
lambda: main_loop.quit() and False)
3251
3134
3252
if use_dbus:
3135
3253
3136
3254
@alternate_dbus_interfaces(
3137
{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
3255
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3138
3256
class MandosDBusService(DBusObjectWithObjectManager):
3139
3257
"""A D-Bus proxy object"""
3140
3258
3141
3259
def __init__(self):
3142
3260
dbus.service.Object.__init__(self, bus, "/")
3143
3261
3144
3262
_interface = "se.recompile.Mandos"
3145
3263
3146
3264
@dbus.service.signal(_interface, signature="o")
3147
3265
def ClientAdded(self, objpath):
3148
3266
"D-Bus signal"
3149
3267
pass
3150
3268
3151
3269
@dbus.service.signal(_interface, signature="ss")
3152
3270
def ClientNotFound(self, fingerprint, address):
3153
3271
"D-Bus signal"
3154
3272
pass
3155
3273
3156
3274
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3157
3275
"true"})
3158
3276
@dbus.service.signal(_interface, signature="os")
3159
3277
def ClientRemoved(self, objpath, name):
3160
3278
"D-Bus signal"
3161
3279
pass
3162
3280
3163
3281
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3164
3282
"true"})
3165
3283
@dbus.service.method(_interface, out_signature="ao")
3166
3284
def GetAllClients(self):
3167
3285
"D-Bus method"
3168
3286
return dbus.Array(c.dbus_object_path for c in
3169
tcp_server.clients.itervalues())
3170
3287
tcp_server.clients.values())
3288
3171
3289
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3172
3290
"true"})
3173
3291
@dbus.service.method(_interface,
3175
3293
def GetAllClientsWithProperties(self):
3176
3294
"D-Bus method"
3177
3295
return dbus.Dictionary(
3178
{ c.dbus_object_path: c.GetAll(
3296
{c.dbus_object_path: c.GetAll(
3179
3297
"se.recompile.Mandos.Client")
3180
for c in tcp_server.clients.itervalues() },
3298
for c in tcp_server.clients.values()},
3181
3299
signature="oa{sv}")
3182
3300
3183
3301
@dbus.service.method(_interface, in_signature="o")
3184
3302
def RemoveClient(self, object_path):
3185
3303
"D-Bus method"
3186
for c in tcp_server.clients.itervalues():
3304
for c in tcp_server.clients.values():
3187
3305
if c.dbus_object_path == object_path:
3188
3306
del tcp_server.clients[c.name]
3189
3307
c.remove_from_connection()
3193
3311
self.client_removed_signal(c)
3194
3312
return
3195
3313
raise KeyError(object_path)
3196
3314
3197
3315
del _interface
3198
3316
3199
3317
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3200
out_signature = "a{oa{sa{sv}}}")
3318
out_signature="a{oa{sa{sv}}}")
3201
3319
def GetManagedObjects(self):
3202
3320
"""D-Bus method"""
3203
3321
return dbus.Dictionary(
3204
{ client.dbus_object_path:
3205
dbus.Dictionary(
3206
{ interface: client.GetAll(interface)
3207
for interface in
3208
client._get_all_interface_names()})
3209
for client in tcp_server.clients.values()})
3210
3322
{client.dbus_object_path:
3323
dbus.Dictionary(
3324
{interface: client.GetAll(interface)
3325
for interface in
3326
client._get_all_interface_names()})
3327
for client in tcp_server.clients.values()})
3328
3211
3329
def client_added_signal(self, client):
3212
3330
"""Send the new standard signal and the old signal"""
3213
3331
if use_dbus:
3215
3333
self.InterfacesAdded(
3216
3334
client.dbus_object_path,
3217
3335
dbus.Dictionary(
3218
{ interface: client.GetAll(interface)
3219
for interface in
3220
client._get_all_interface_names()}))
3336
{interface: client.GetAll(interface)
3337
for interface in
3338
client._get_all_interface_names()}))
3221
3339
# Old signal
3222
3340
self.ClientAdded(client.dbus_object_path)
3223
3341
3224
3342
def client_removed_signal(self, client):
3225
3343
"""Send the new standard signal and the old signal"""
3226
3344
if use_dbus:
3231
3349
# Old signal
3232
3350
self.ClientRemoved(client.dbus_object_path,
3233
3351
client.name)
3234
3352
3235
3353
mandos_dbus_service = MandosDBusService()
3236
3354
3355
# Save modules to variables to exempt the modules from being
3356
# unloaded before the function registered with atexit() is run.
3357
mp = multiprocessing
3358
wn = wnull
3359
3237
3360
def cleanup():
3238
3361
"Cleanup function; run on exit"
3239
3362
if zeroconf:
3240
3363
service.cleanup()
3241
3242
multiprocessing.active_children()
3243
wnull.close()
3364
3365
mp.active_children()
3366
wn.close()
3244
3367
if not (tcp_server.clients or client_settings):
3245
3368
return
3246
3369
3247
3370
# Store client before exiting. Secrets are encrypted with key
3248
3371
# based on what config file has. If config file is
3249
3372
# removed/edited, old secret will thus be unrecovable.
3250
3373
clients = {}
3251
3374
with PGPEngine() as pgp:
3252
for client in tcp_server.clients.itervalues():
3375
for client in tcp_server.clients.values():
3253
3376
key = client_settings[client.name]["secret"]
3254
3377
client.encrypted_secret = pgp.encrypt(client.secret,
3255
3378
key)
3256
3379
client_dict = {}
3257
3380
3258
3381
# A list of attributes that can not be pickled
3259
3382
# + secret.
3260
exclude = { "bus", "changedstate", "secret",
3261
"checker", "server_settings" }
3383
exclude = {"bus", "changedstate", "secret",
3384
"checker", "server_settings"}
3262
3385
for name, typ in inspect.getmembers(dbus.service
3263
3386
.Object):
3264
3387
exclude.add(name)
3265
3388
3266
3389
client_dict["encrypted_secret"] = (client
3267
3390
.encrypted_secret)
3268
3391
for attr in client.client_structure:
3269
3392
if attr not in exclude:
3270
3393
client_dict[attr] = getattr(client, attr)
3271
3394
3272
3395
clients[client.name] = client_dict
3273
3396
del client_settings[client.name]["secret"]
3274
3397
3275
3398
try:
3276
3399
with tempfile.NamedTemporaryFile(
3277
3400
mode='wb',
3279
3402
prefix='clients-',
3280
3403
dir=os.path.dirname(stored_state_path),
3281
3404
delete=False) as stored_state:
3282
pickle.dump((clients, client_settings), stored_state)
3405
pickle.dump((clients, client_settings), stored_state,
3406
protocol=2)
3283
3407
tempname = stored_state.name
3284
3408
os.rename(tempname, stored_state_path)
3285
3409
except (IOError, OSError) as e:
3295
3419
logger.warning("Could not save persistent state:",
3296
3420
exc_info=e)
3297
3421
raise
3298
3422
3299
3423
# Delete all clients, and settings from config
3300
3424
while tcp_server.clients:
3301
3425
name, client = tcp_server.clients.popitem()
3307
3431
if use_dbus:
3308
3432
mandos_dbus_service.client_removed_signal(client)
3309
3433
client_settings.clear()
3310
3434
3311
3435
atexit.register(cleanup)
3312
3313
for client in tcp_server.clients.itervalues():
3436
3437
for client in tcp_server.clients.values():
3314
3438
if use_dbus:
3315
3439
# Emit D-Bus signal for adding
3316
3440
mandos_dbus_service.client_added_signal(client)
3317
3441
# Need to initiate checking of clients
3318
3442
if client.enabled:
3319
3443
client.init_checker()
3320
3444
3321
3445
tcp_server.enable()
3322
3446
tcp_server.server_activate()
3323
3447
3324
3448
# Find out what port we got
3325
3449
if zeroconf:
3326
3450
service.port = tcp_server.socket.getsockname()[1]
3331
3455
else: # IPv4
3332
3456
logger.info("Now listening on address %r, port %d",
3333
3457
*tcp_server.socket.getsockname())
3334
3335
#service.interface = tcp_server.socket.getsockname()[3]
3336
3458
3459
# service.interface = tcp_server.socket.getsockname()[3]
3460
3337
3461
try:
3338
3462
if zeroconf:
3339
3463
# From the Avahi example code
3344
3468
cleanup()
3345
3469
sys.exit(1)
3346
3470
# End of Avahi example code
3347
3348
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
3349
lambda *args, **kwargs:
3350
(tcp_server.handle_request
3351
(*args[2:], **kwargs) or True))
3352
3471
3472
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3473
lambda *args, **kwargs:
3474
(tcp_server.handle_request
3475
(*args[2:], **kwargs) or True))
3476
3353
3477
logger.debug("Starting main loop")
3354
3478
main_loop.run()
3355
3479
except AvahiError as error:
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0