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- Committer: Teddy Hogeborn
- Date: 2016-03-07 20:31:27 UTC
- mto: (237.7.594 trunk)
- mto: This revision was merged to the branch mainline in revision 337.
- Revision ID: teddy@recompile.se-20160307203127-dn9nyl6a5e2a6l4g
Remove empty comment
* mandos: Remove empty comment.
* mandos: Remove empty comment.
- files added:
- initramfs-tools-hook-conf
- files removed:
- debian/mandos-client.templates
- debian/tests
- dracut-module
- files modified:
- .bzrignore
added
removed
mandos
1
#!/usr/bin/python3 -b
2
# -*- mode: python; after-save-hook: (lambda () (let ((command (if (fboundp 'file-local-name) (file-local-name (buffer-file-name)) (or (file-remote-p (buffer-file-name) 'localname) (buffer-file-name))))) (if (= (progn (if (get-buffer "*Test*") (kill-buffer "*Test*")) (process-file-shell-command (format "%s --check" (shell-quote-argument command)) nil "*Test*")) 0) (let ((w (get-buffer-window "*Test*"))) (if w (delete-window w))) (progn (with-current-buffer "*Test*" (compilation-mode)) (display-buffer "*Test*" '(display-buffer-in-side-window)))))); coding: utf-8 -*-
3
#
1
#!/usr/bin/python
2
# -*- mode: python; coding: utf-8 -*-
3
#
4
4
# Mandos server - give out binary blobs to connecting clients.
5
#
5
#
6
6
# This program is partly derived from an example program for an Avahi
7
7
# service publisher, downloaded from
8
8
# <http://avahi.org/wiki/PythonPublishExample>. This includes the
9
9
# methods "add", "remove", "server_state_changed",
10
10
# "entry_group_state_changed", "cleanup", and "activate" in the
11
11
# "AvahiService" class, and some lines in "main".
12
#
12
#
13
13
# Everything else is
14
# Copyright © 2008-2019 Teddy Hogeborn
15
# Copyright © 2008-2019 Björn Påhlsson
16
#
17
# This file is part of Mandos.
18
#
19
# Mandos is free software: you can redistribute it and/or modify it
20
# under the terms of the GNU General Public License as published by
14
# Copyright © 2008-2016 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
21
19
# the Free Software Foundation, either version 3 of the License, or
22
20
# (at your option) any later version.
23
21
#
24
# Mandos is distributed in the hope that it will be useful, but
25
# WITHOUT ANY WARRANTY; without even the implied warranty of
22
# This program is distributed in the hope that it will be useful,
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
26
24
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
27
25
# GNU General Public License for more details.
28
#
26
#
29
27
# You should have received a copy of the GNU General Public License
30
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
31
#
28
# along with this program. If not, see
29
# <http://www.gnu.org/licenses/>.
30
#
32
31
# Contact the authors at <mandos@recompile.se>.
33
#
32
#
34
33
35
34
from __future__ import (division, absolute_import, print_function,
36
35
unicode_literals)
37
36
38
try:
39
from future_builtins import *
40
except ImportError:
41
pass
37
from future_builtins import *
42
38
43
39
try:
44
40
import SocketServer as socketserver
77
73
import itertools
78
74
import collections
79
75
import codecs
80
import unittest
81
76
82
77
import dbus
83
78
import dbus.service
84
import gi
85
from gi.repository import GLib
79
try:
80
from gi.repository import GObject
81
except ImportError:
82
import gobject as GObject
83
import avahi
86
84
from dbus.mainloop.glib import DBusGMainLoop
87
85
import ctypes
88
86
import ctypes.util
89
87
import xml.dom.minidom
90
88
import inspect
91
89
92
if sys.version_info.major == 2:
93
__metaclass__ = type
94
95
# Show warnings by default
96
if not sys.warnoptions:
97
import warnings
98
warnings.simplefilter("default")
99
100
# Try to find the value of SO_BINDTODEVICE:
101
90
try:
102
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
103
# newer, and it is also the most natural place for it:
104
91
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
105
92
except AttributeError:
106
93
try:
107
# This is where SO_BINDTODEVICE was up to and including Python
108
# 2.6, and also 3.2:
109
94
from IN import SO_BINDTODEVICE
110
95
except ImportError:
111
# In Python 2.7 it seems to have been removed entirely.
112
# Try running the C preprocessor:
113
try:
114
cc = subprocess.Popen(["cc", "--language=c", "-E",
115
"/dev/stdin"],
116
stdin=subprocess.PIPE,
117
stdout=subprocess.PIPE)
118
stdout = cc.communicate(
119
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
120
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
121
except (OSError, ValueError, IndexError):
122
# No value found
123
SO_BINDTODEVICE = None
96
SO_BINDTODEVICE = None
124
97
125
98
if sys.version_info.major == 2:
126
99
str = unicode
127
100
128
if sys.version_info < (3, 2):
129
configparser.Configparser = configparser.SafeConfigParser
130
131
version = "1.8.8"
101
version = "1.7.4"
132
102
stored_state_file = "clients.pickle"
133
103
134
104
logger = logging.getLogger()
135
logging.captureWarnings(True) # Show warnings via the logging system
136
105
syslogger = None
137
106
138
107
try:
139
108
if_nametoindex = ctypes.cdll.LoadLibrary(
140
109
ctypes.util.find_library("c")).if_nametoindex
141
110
except (OSError, AttributeError):
142
111
143
112
def if_nametoindex(interface):
144
113
"Get an interface index the hard way, i.e. using fcntl()"
145
114
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
150
119
return interface_index
151
120
152
121
153
def copy_function(func):
154
"""Make a copy of a function"""
155
if sys.version_info.major == 2:
156
return types.FunctionType(func.func_code,
157
func.func_globals,
158
func.func_name,
159
func.func_defaults,
160
func.func_closure)
161
else:
162
return types.FunctionType(func.__code__,
163
func.__globals__,
164
func.__name__,
165
func.__defaults__,
166
func.__closure__)
167
168
169
122
def initlogger(debug, level=logging.WARNING):
170
123
"""init logger and add loglevel"""
171
124
172
125
global syslogger
173
126
syslogger = (logging.handlers.SysLogHandler(
174
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
175
address="/dev/log"))
127
facility = logging.handlers.SysLogHandler.LOG_DAEMON,
128
address = "/dev/log"))
176
129
syslogger.setFormatter(logging.Formatter
177
130
('Mandos [%(process)d]: %(levelname)s:'
178
131
' %(message)s'))
179
132
logger.addHandler(syslogger)
180
133
181
134
if debug:
182
135
console = logging.StreamHandler()
183
136
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
193
146
pass
194
147
195
148
196
class PGPEngine:
149
class PGPEngine(object):
197
150
"""A simple class for OpenPGP symmetric encryption & decryption"""
198
151
199
152
def __init__(self):
200
153
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
201
154
self.gpg = "gpg"
202
155
try:
203
156
output = subprocess.check_output(["gpgconf"])
204
157
for line in output.splitlines():
205
name, text, path = line.split(b":")
206
if name == b"gpg":
158
name, text, path = line.split(":")
159
if name == "gpg":
207
160
self.gpg = path
208
161
break
209
162
except OSError as e:
212
165
self.gnupgargs = ['--batch',
213
166
'--homedir', self.tempdir,
214
167
'--force-mdc',
215
'--quiet']
216
# Only GPG version 1 has the --no-use-agent option.
217
if self.gpg == b"gpg" or self.gpg.endswith(b"/gpg"):
218
self.gnupgargs.append("--no-use-agent")
219
168
'--quiet',
169
'--no-use-agent']
170
220
171
def __enter__(self):
221
172
return self
222
173
223
174
def __exit__(self, exc_type, exc_value, traceback):
224
175
self._cleanup()
225
176
return False
226
177
227
178
def __del__(self):
228
179
self._cleanup()
229
180
230
181
def _cleanup(self):
231
182
if self.tempdir is not None:
232
183
# Delete contents of tempdir
233
184
for root, dirs, files in os.walk(self.tempdir,
234
topdown=False):
185
topdown = False):
235
186
for filename in files:
236
187
os.remove(os.path.join(root, filename))
237
188
for dirname in dirs:
239
190
# Remove tempdir
240
191
os.rmdir(self.tempdir)
241
192
self.tempdir = None
242
193
243
194
def password_encode(self, password):
244
195
# Passphrase can not be empty and can not contain newlines or
245
196
# NUL bytes. So we prefix it and hex encode it.
250
201
.replace(b"\n", b"\\n")
251
202
.replace(b"\0", b"\\x00"))
252
203
return encoded
253
204
254
205
def encrypt(self, data, password):
255
206
passphrase = self.password_encode(password)
256
207
with tempfile.NamedTemporaryFile(
261
212
'--passphrase-file',
262
213
passfile.name]
263
214
+ self.gnupgargs,
264
stdin=subprocess.PIPE,
265
stdout=subprocess.PIPE,
266
stderr=subprocess.PIPE)
267
ciphertext, err = proc.communicate(input=data)
215
stdin = subprocess.PIPE,
216
stdout = subprocess.PIPE,
217
stderr = subprocess.PIPE)
218
ciphertext, err = proc.communicate(input = data)
268
219
if proc.returncode != 0:
269
220
raise PGPError(err)
270
221
return ciphertext
271
222
272
223
def decrypt(self, data, password):
273
224
passphrase = self.password_encode(password)
274
225
with tempfile.NamedTemporaryFile(
275
dir=self.tempdir) as passfile:
226
dir = self.tempdir) as passfile:
276
227
passfile.write(passphrase)
277
228
passfile.flush()
278
229
proc = subprocess.Popen([self.gpg, '--decrypt',
279
230
'--passphrase-file',
280
231
passfile.name]
281
232
+ self.gnupgargs,
282
stdin=subprocess.PIPE,
283
stdout=subprocess.PIPE,
284
stderr=subprocess.PIPE)
285
decrypted_plaintext, err = proc.communicate(input=data)
233
stdin = subprocess.PIPE,
234
stdout = subprocess.PIPE,
235
stderr = subprocess.PIPE)
236
decrypted_plaintext, err = proc.communicate(input = data)
286
237
if proc.returncode != 0:
287
238
raise PGPError(err)
288
239
return decrypted_plaintext
289
240
290
241
291
# Pretend that we have an Avahi module
292
class avahi:
293
"""This isn't so much a class as it is a module-like namespace."""
294
IF_UNSPEC = -1 # avahi-common/address.h
295
PROTO_UNSPEC = -1 # avahi-common/address.h
296
PROTO_INET = 0 # avahi-common/address.h
297
PROTO_INET6 = 1 # avahi-common/address.h
298
DBUS_NAME = "org.freedesktop.Avahi"
299
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
300
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
301
DBUS_PATH_SERVER = "/"
302
303
@staticmethod
304
def string_array_to_txt_array(t):
305
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
306
for s in t), signature="ay")
307
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
308
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
309
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
310
SERVER_INVALID = 0 # avahi-common/defs.h
311
SERVER_REGISTERING = 1 # avahi-common/defs.h
312
SERVER_RUNNING = 2 # avahi-common/defs.h
313
SERVER_COLLISION = 3 # avahi-common/defs.h
314
SERVER_FAILURE = 4 # avahi-common/defs.h
315
316
317
242
class AvahiError(Exception):
318
243
def __init__(self, value, *args, **kwargs):
319
244
self.value = value
329
254
pass
330
255
331
256
332
class AvahiService:
257
class AvahiService(object):
333
258
"""An Avahi (Zeroconf) service.
334
259
335
260
Attributes:
336
261
interface: integer; avahi.IF_UNSPEC or an interface index.
337
262
Used to optionally bind to the specified interface.
349
274
server: D-Bus Server
350
275
bus: dbus.SystemBus()
351
276
"""
352
277
353
278
def __init__(self,
354
interface=avahi.IF_UNSPEC,
355
name=None,
356
servicetype=None,
357
port=None,
358
TXT=None,
359
domain="",
360
host="",
361
max_renames=32768,
362
protocol=avahi.PROTO_UNSPEC,
363
bus=None):
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):
364
289
self.interface = interface
365
290
self.name = name
366
291
self.type = servicetype
375
300
self.server = None
376
301
self.bus = bus
377
302
self.entry_group_state_changed_match = None
378
303
379
304
def rename(self, remove=True):
380
305
"""Derived from the Avahi example code"""
381
306
if self.rename_count >= self.max_renames:
401
326
logger.critical("D-Bus Exception", exc_info=error)
402
327
self.cleanup()
403
328
os._exit(1)
404
329
405
330
def remove(self):
406
331
"""Derived from the Avahi example code"""
407
332
if self.entry_group_state_changed_match is not None:
409
334
self.entry_group_state_changed_match = None
410
335
if self.group is not None:
411
336
self.group.Reset()
412
337
413
338
def add(self):
414
339
"""Derived from the Avahi example code"""
415
340
self.remove()
432
357
dbus.UInt16(self.port),
433
358
avahi.string_array_to_txt_array(self.TXT))
434
359
self.group.Commit()
435
360
436
361
def entry_group_state_changed(self, state, error):
437
362
"""Derived from the Avahi example code"""
438
363
logger.debug("Avahi entry group state change: %i", state)
439
364
440
365
if state == avahi.ENTRY_GROUP_ESTABLISHED:
441
366
logger.debug("Zeroconf service established.")
442
367
elif state == avahi.ENTRY_GROUP_COLLISION:
446
371
logger.critical("Avahi: Error in group state changed %s",
447
372
str(error))
448
373
raise AvahiGroupError("State changed: {!s}".format(error))
449
374
450
375
def cleanup(self):
451
376
"""Derived from the Avahi example code"""
452
377
if self.group is not None:
457
382
pass
458
383
self.group = None
459
384
self.remove()
460
385
461
386
def server_state_changed(self, state, error=None):
462
387
"""Derived from the Avahi example code"""
463
388
logger.debug("Avahi server state change: %i", state)
492
417
logger.debug("Unknown state: %r", state)
493
418
else:
494
419
logger.debug("Unknown state: %r: %r", state, error)
495
420
496
421
def activate(self):
497
422
"""Derived from the Avahi example code"""
498
423
if self.server is None:
509
434
class AvahiServiceToSyslog(AvahiService):
510
435
def rename(self, *args, **kwargs):
511
436
"""Add the new name to the syslog messages"""
512
ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
437
ret = AvahiService.rename(self, *args, **kwargs)
513
438
syslogger.setFormatter(logging.Formatter(
514
439
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
515
440
.format(self.name)))
516
441
return ret
517
442
518
519
443
# Pretend that we have a GnuTLS module
520
class gnutls:
521
"""This isn't so much a class as it is a module-like namespace."""
522
523
library = ctypes.util.find_library("gnutls")
524
if library is None:
525
library = ctypes.util.find_library("gnutls-deb0")
526
_library = ctypes.cdll.LoadLibrary(library)
527
del library
528
444
class GnuTLS(object):
445
"""This isn't so much a class as it is a module-like namespace.
446
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"
451
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
529
459
# Unless otherwise indicated, the constants and types below are
530
460
# all from the gnutls/gnutls.h C header file.
531
461
532
462
# Constants
533
463
E_SUCCESS = 0
534
464
E_INTERRUPTED = -52
535
465
E_AGAIN = -28
536
466
CRT_OPENPGP = 2
537
CRT_RAWPK = 3
538
467
CLIENT = 2
539
468
SHUT_RDWR = 0
540
469
CRD_CERTIFICATE = 1
541
470
E_NO_CERTIFICATE_FOUND = -49
542
X509_FMT_DER = 0
543
NO_TICKETS = 1<<10
544
ENABLE_RAWPK = 1<<18
545
CTYPE_PEERS = 3
546
KEYID_USE_SHA256 = 1 # gnutls/x509.h
547
471
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
548
472
549
473
# Types
550
474
class session_int(ctypes.Structure):
551
475
_fields_ = []
552
476
session_t = ctypes.POINTER(session_int)
553
554
477
class certificate_credentials_st(ctypes.Structure):
555
478
_fields_ = []
556
479
certificate_credentials_t = ctypes.POINTER(
557
480
certificate_credentials_st)
558
481
certificate_type_t = ctypes.c_int
559
560
482
class datum_t(ctypes.Structure):
561
483
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
562
484
('size', ctypes.c_uint)]
563
564
485
class openpgp_crt_int(ctypes.Structure):
565
486
_fields_ = []
566
487
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
567
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
488
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
568
489
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
569
490
credentials_type_t = ctypes.c_int
570
491
transport_ptr_t = ctypes.c_void_p
571
492
close_request_t = ctypes.c_int
572
493
573
494
# Exceptions
574
495
class Error(Exception):
575
def __init__(self, message=None, code=None, args=()):
496
# We need to use the class name "GnuTLS" here, since this
497
# exception might be raised from within GnuTLS.__init__,
498
# which is called before the assignment to the "gnutls"
499
# global variable has happened.
500
def __init__(self, message = None, code = None, args=()):
576
501
# Default usage is by a message string, but if a return
577
502
# code is passed, convert it to a string with
578
503
# gnutls.strerror()
579
504
self.code = code
580
505
if message is None and code is not None:
581
message = gnutls.strerror(code)
582
return super(gnutls.Error, self).__init__(
506
message = GnuTLS.strerror(code)
507
return super(GnuTLS.Error, self).__init__(
583
508
message, *args)
584
509
585
510
class CertificateSecurityError(Error):
586
511
pass
587
512
588
513
# Classes
589
class Credentials:
514
class Credentials(object):
590
515
def __init__(self):
591
516
self._c_object = gnutls.certificate_credentials_t()
592
517
gnutls.certificate_allocate_credentials(
593
518
ctypes.byref(self._c_object))
594
519
self.type = gnutls.CRD_CERTIFICATE
595
520
596
521
def __del__(self):
597
522
gnutls.certificate_free_credentials(self._c_object)
598
599
class ClientSession:
600
def __init__(self, socket, credentials=None):
523
524
class ClientSession(object):
525
def __init__(self, socket, credentials = None):
601
526
self._c_object = gnutls.session_t()
602
gnutls_flags = gnutls.CLIENT
603
if gnutls.check_version(b"3.5.6"):
604
gnutls_flags |= gnutls.NO_TICKETS
605
if gnutls.has_rawpk:
606
gnutls_flags |= gnutls.ENABLE_RAWPK
607
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
608
del gnutls_flags
527
gnutls.init(ctypes.byref(self._c_object), gnutls.CLIENT)
609
528
gnutls.set_default_priority(self._c_object)
610
529
gnutls.transport_set_ptr(self._c_object, socket.fileno())
611
530
gnutls.handshake_set_private_extensions(self._c_object,
617
536
ctypes.cast(credentials._c_object,
618
537
ctypes.c_void_p))
619
538
self.credentials = credentials
620
539
621
540
def __del__(self):
622
541
gnutls.deinit(self._c_object)
623
542
624
543
def handshake(self):
625
544
return gnutls.handshake(self._c_object)
626
545
627
546
def send(self, data):
628
547
data = bytes(data)
629
548
data_len = len(data)
631
550
data_len -= gnutls.record_send(self._c_object,
632
551
data[-data_len:],
633
552
data_len)
634
553
635
554
def bye(self):
636
555
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
637
556
638
557
# Error handling functions
639
558
def _error_code(result):
640
559
"""A function to raise exceptions on errors, suitable
642
561
if result >= 0:
643
562
return result
644
563
if result == gnutls.E_NO_CERTIFICATE_FOUND:
645
raise gnutls.CertificateSecurityError(code=result)
646
raise gnutls.Error(code=result)
647
564
raise gnutls.CertificateSecurityError(code = result)
565
raise gnutls.Error(code = result)
566
648
567
def _retry_on_error(result, func, arguments):
649
568
"""A function to retry on some errors, suitable
650
569
for the 'errcheck' attribute on ctypes functions"""
653
572
return _error_code(result)
654
573
result = func(*arguments)
655
574
return result
656
575
657
576
# Unless otherwise indicated, the function declarations below are
658
577
# all from the gnutls/gnutls.h C header file.
659
578
660
579
# Functions
661
580
priority_set_direct = _library.gnutls_priority_set_direct
662
581
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
663
582
ctypes.POINTER(ctypes.c_char_p)]
664
583
priority_set_direct.restype = _error_code
665
584
666
585
init = _library.gnutls_init
667
586
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
668
587
init.restype = _error_code
669
588
670
589
set_default_priority = _library.gnutls_set_default_priority
671
590
set_default_priority.argtypes = [session_t]
672
591
set_default_priority.restype = _error_code
673
592
674
593
record_send = _library.gnutls_record_send
675
594
record_send.argtypes = [session_t, ctypes.c_void_p,
676
595
ctypes.c_size_t]
677
596
record_send.restype = ctypes.c_ssize_t
678
597
record_send.errcheck = _retry_on_error
679
598
680
599
certificate_allocate_credentials = (
681
600
_library.gnutls_certificate_allocate_credentials)
682
601
certificate_allocate_credentials.argtypes = [
683
602
ctypes.POINTER(certificate_credentials_t)]
684
603
certificate_allocate_credentials.restype = _error_code
685
604
686
605
certificate_free_credentials = (
687
606
_library.gnutls_certificate_free_credentials)
688
certificate_free_credentials.argtypes = [
689
certificate_credentials_t]
607
certificate_free_credentials.argtypes = [certificate_credentials_t]
690
608
certificate_free_credentials.restype = None
691
609
692
610
handshake_set_private_extensions = (
693
611
_library.gnutls_handshake_set_private_extensions)
694
612
handshake_set_private_extensions.argtypes = [session_t,
695
613
ctypes.c_int]
696
614
handshake_set_private_extensions.restype = None
697
615
698
616
credentials_set = _library.gnutls_credentials_set
699
617
credentials_set.argtypes = [session_t, credentials_type_t,
700
618
ctypes.c_void_p]
701
619
credentials_set.restype = _error_code
702
620
703
621
strerror = _library.gnutls_strerror
704
622
strerror.argtypes = [ctypes.c_int]
705
623
strerror.restype = ctypes.c_char_p
706
624
707
625
certificate_type_get = _library.gnutls_certificate_type_get
708
626
certificate_type_get.argtypes = [session_t]
709
627
certificate_type_get.restype = _error_code
710
628
711
629
certificate_get_peers = _library.gnutls_certificate_get_peers
712
630
certificate_get_peers.argtypes = [session_t,
713
631
ctypes.POINTER(ctypes.c_uint)]
714
632
certificate_get_peers.restype = ctypes.POINTER(datum_t)
715
633
716
634
global_set_log_level = _library.gnutls_global_set_log_level
717
635
global_set_log_level.argtypes = [ctypes.c_int]
718
636
global_set_log_level.restype = None
719
637
720
638
global_set_log_function = _library.gnutls_global_set_log_function
721
639
global_set_log_function.argtypes = [log_func]
722
640
global_set_log_function.restype = None
723
641
724
642
deinit = _library.gnutls_deinit
725
643
deinit.argtypes = [session_t]
726
644
deinit.restype = None
727
645
728
646
handshake = _library.gnutls_handshake
729
647
handshake.argtypes = [session_t]
730
648
handshake.restype = _error_code
731
649
handshake.errcheck = _retry_on_error
732
650
733
651
transport_set_ptr = _library.gnutls_transport_set_ptr
734
652
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
735
653
transport_set_ptr.restype = None
736
654
737
655
bye = _library.gnutls_bye
738
656
bye.argtypes = [session_t, close_request_t]
739
657
bye.restype = _error_code
740
658
bye.errcheck = _retry_on_error
741
659
742
660
check_version = _library.gnutls_check_version
743
661
check_version.argtypes = [ctypes.c_char_p]
744
662
check_version.restype = ctypes.c_char_p
745
746
_need_version = b"3.3.0"
747
if check_version(_need_version) is None:
748
raise self.Error("Needs GnuTLS {} or later"
749
.format(_need_version))
750
751
_tls_rawpk_version = b"3.6.6"
752
has_rawpk = bool(check_version(_tls_rawpk_version))
753
754
if has_rawpk:
755
# Types
756
class pubkey_st(ctypes.Structure):
757
_fields = []
758
pubkey_t = ctypes.POINTER(pubkey_st)
759
760
x509_crt_fmt_t = ctypes.c_int
761
762
# All the function declarations below are from gnutls/abstract.h
763
pubkey_init = _library.gnutls_pubkey_init
764
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
765
pubkey_init.restype = _error_code
766
767
pubkey_import = _library.gnutls_pubkey_import
768
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
769
x509_crt_fmt_t]
770
pubkey_import.restype = _error_code
771
772
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
773
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
774
ctypes.POINTER(ctypes.c_ubyte),
775
ctypes.POINTER(ctypes.c_size_t)]
776
pubkey_get_key_id.restype = _error_code
777
778
pubkey_deinit = _library.gnutls_pubkey_deinit
779
pubkey_deinit.argtypes = [pubkey_t]
780
pubkey_deinit.restype = None
781
else:
782
# All the function declarations below are from gnutls/openpgp.h
783
784
openpgp_crt_init = _library.gnutls_openpgp_crt_init
785
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
786
openpgp_crt_init.restype = _error_code
787
788
openpgp_crt_import = _library.gnutls_openpgp_crt_import
789
openpgp_crt_import.argtypes = [openpgp_crt_t,
790
ctypes.POINTER(datum_t),
791
openpgp_crt_fmt_t]
792
openpgp_crt_import.restype = _error_code
793
794
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
795
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
796
ctypes.POINTER(ctypes.c_uint)]
797
openpgp_crt_verify_self.restype = _error_code
798
799
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
800
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
801
openpgp_crt_deinit.restype = None
802
803
openpgp_crt_get_fingerprint = (
804
_library.gnutls_openpgp_crt_get_fingerprint)
805
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
806
ctypes.c_void_p,
807
ctypes.POINTER(
808
ctypes.c_size_t)]
809
openpgp_crt_get_fingerprint.restype = _error_code
810
811
if check_version(b"3.6.4"):
812
certificate_type_get2 = _library.gnutls_certificate_type_get2
813
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
814
certificate_type_get2.restype = _error_code
815
663
664
# All the function declarations below are from gnutls/openpgp.h
665
666
openpgp_crt_init = _library.gnutls_openpgp_crt_init
667
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
668
openpgp_crt_init.restype = _error_code
669
670
openpgp_crt_import = _library.gnutls_openpgp_crt_import
671
openpgp_crt_import.argtypes = [openpgp_crt_t,
672
ctypes.POINTER(datum_t),
673
openpgp_crt_fmt_t]
674
openpgp_crt_import.restype = _error_code
675
676
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
677
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
678
ctypes.POINTER(ctypes.c_uint)]
679
openpgp_crt_verify_self.restype = _error_code
680
681
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
682
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
683
openpgp_crt_deinit.restype = None
684
685
openpgp_crt_get_fingerprint = (
686
_library.gnutls_openpgp_crt_get_fingerprint)
687
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
688
ctypes.c_void_p,
689
ctypes.POINTER(
690
ctypes.c_size_t)]
691
openpgp_crt_get_fingerprint.restype = _error_code
692
816
693
# Remove non-public functions
817
694
del _error_code, _retry_on_error
818
695
# Create the global "gnutls" object, simulating a module
696
gnutls = GnuTLS()
819
697
820
698
def call_pipe(connection, # : multiprocessing.Connection
821
699
func, *args, **kwargs):
822
700
"""This function is meant to be called by multiprocessing.Process
823
701
824
702
This function runs func(*args, **kwargs), and writes the resulting
825
703
return value on the provided multiprocessing.Connection.
826
704
"""
827
705
connection.send(func(*args, **kwargs))
828
706
connection.close()
829
707
830
831
class Client:
708
class Client(object):
832
709
"""A representation of a client host served by this server.
833
710
834
711
Attributes:
835
712
approved: bool(); 'None' if not yet approved/disapproved
836
713
approval_delay: datetime.timedelta(); Time to wait for approval
837
714
approval_duration: datetime.timedelta(); Duration of one approval
838
checker: multiprocessing.Process(); a running checker process used
839
to see if the client lives. 'None' if no process is
840
running.
841
checker_callback_tag: a GLib event source tag, or None
715
checker: subprocess.Popen(); a running checker process used
716
to see if the client lives.
717
'None' if no process is running.
718
checker_callback_tag: a GObject event source tag, or None
842
719
checker_command: string; External command which is run to check
843
720
if client lives. %() expansions are done at
844
721
runtime with vars(self) as dict, so that for
845
722
instance %(name)s can be used in the command.
846
checker_initiator_tag: a GLib event source tag, or None
723
checker_initiator_tag: a GObject event source tag, or None
847
724
created: datetime.datetime(); (UTC) object creation
848
725
client_structure: Object describing what attributes a client has
849
726
and is used for storing the client at exit
850
727
current_checker_command: string; current running checker_command
851
disable_initiator_tag: a GLib event source tag, or None
728
disable_initiator_tag: a GObject event source tag, or None
852
729
enabled: bool()
853
730
fingerprint: string (40 or 32 hexadecimal digits); used to
854
uniquely identify an OpenPGP client
855
key_id: string (64 hexadecimal digits); used to uniquely identify
856
a client using raw public keys
731
uniquely identify the client
857
732
host: string; available for use by the checker command
858
733
interval: datetime.timedelta(); How often to start a new checker
859
734
last_approval_request: datetime.datetime(); (UTC) or None
875
750
disabled, or None
876
751
server_settings: The server_settings dict from main()
877
752
"""
878
753
879
754
runtime_expansions = ("approval_delay", "approval_duration",
880
"created", "enabled", "expires", "key_id",
755
"created", "enabled", "expires",
881
756
"fingerprint", "host", "interval",
882
757
"last_approval_request", "last_checked_ok",
883
758
"last_enabled", "name", "timeout")
892
767
"approved_by_default": "True",
893
768
"enabled": "True",
894
769
}
895
770
896
771
@staticmethod
897
772
def config_parser(config):
898
773
"""Construct a new dict of client settings of this form:
905
780
for client_name in config.sections():
906
781
section = dict(config.items(client_name))
907
782
client = settings[client_name] = {}
908
783
909
784
client["host"] = section["host"]
910
785
# Reformat values from string types to Python types
911
786
client["approved_by_default"] = config.getboolean(
912
787
client_name, "approved_by_default")
913
788
client["enabled"] = config.getboolean(client_name,
914
789
"enabled")
915
916
# Uppercase and remove spaces from key_id and fingerprint
917
# for later comparison purposes with return value from the
918
# key_id() and fingerprint() functions
919
client["key_id"] = (section.get("key_id", "").upper()
920
.replace(" ", ""))
790
791
# Uppercase and remove spaces from fingerprint for later
792
# comparison purposes with return value from the
793
# fingerprint() function
921
794
client["fingerprint"] = (section["fingerprint"].upper()
922
795
.replace(" ", ""))
923
796
if "secret" in section:
924
client["secret"] = codecs.decode(section["secret"]
925
.encode("utf-8"),
926
"base64")
797
client["secret"] = section["secret"].decode("base64")
927
798
elif "secfile" in section:
928
799
with open(os.path.expanduser(os.path.expandvars
929
800
(section["secfile"])),
944
815
client["last_approval_request"] = None
945
816
client["last_checked_ok"] = None
946
817
client["last_checker_status"] = -2
947
818
948
819
return settings
949
950
def __init__(self, settings, name=None, server_settings=None):
820
821
def __init__(self, settings, name = None, server_settings=None):
951
822
self.name = name
952
823
if server_settings is None:
953
824
server_settings = {}
955
826
# adding all client settings
956
827
for setting, value in settings.items():
957
828
setattr(self, setting, value)
958
829
959
830
if self.enabled:
960
831
if not hasattr(self, "last_enabled"):
961
832
self.last_enabled = datetime.datetime.utcnow()
965
836
else:
966
837
self.last_enabled = None
967
838
self.expires = None
968
839
969
840
logger.debug("Creating client %r", self.name)
970
logger.debug(" Key ID: %s", self.key_id)
971
841
logger.debug(" Fingerprint: %s", self.fingerprint)
972
842
self.created = settings.get("created",
973
843
datetime.datetime.utcnow())
974
844
975
845
# attributes specific for this server instance
976
846
self.checker = None
977
847
self.checker_initiator_tag = None
983
853
self.changedstate = multiprocessing_manager.Condition(
984
854
multiprocessing_manager.Lock())
985
855
self.client_structure = [attr
986
for attr in self.__dict__.keys()
856
for attr in self.__dict__.iterkeys()
987
857
if not attr.startswith("_")]
988
858
self.client_structure.append("client_structure")
989
859
990
860
for name, t in inspect.getmembers(
991
861
type(self), lambda obj: isinstance(obj, property)):
992
862
if not name.startswith("_"):
993
863
self.client_structure.append(name)
994
864
995
865
# Send notice to process children that client state has changed
996
866
def send_changedstate(self):
997
867
with self.changedstate:
998
868
self.changedstate.notify_all()
999
869
1000
870
def enable(self):
1001
871
"""Start this client's checker and timeout hooks"""
1002
872
if getattr(self, "enabled", False):
1007
877
self.last_enabled = datetime.datetime.utcnow()
1008
878
self.init_checker()
1009
879
self.send_changedstate()
1010
880
1011
881
def disable(self, quiet=True):
1012
882
"""Disable this client."""
1013
883
if not getattr(self, "enabled", False):
1015
885
if not quiet:
1016
886
logger.info("Disabling client %s", self.name)
1017
887
if getattr(self, "disable_initiator_tag", None) is not None:
1018
GLib.source_remove(self.disable_initiator_tag)
888
GObject.source_remove(self.disable_initiator_tag)
1019
889
self.disable_initiator_tag = None
1020
890
self.expires = None
1021
891
if getattr(self, "checker_initiator_tag", None) is not None:
1022
GLib.source_remove(self.checker_initiator_tag)
892
GObject.source_remove(self.checker_initiator_tag)
1023
893
self.checker_initiator_tag = None
1024
894
self.stop_checker()
1025
895
self.enabled = False
1026
896
if not quiet:
1027
897
self.send_changedstate()
1028
# Do not run this again if called by a GLib.timeout_add
898
# Do not run this again if called by a GObject.timeout_add
1029
899
return False
1030
900
1031
901
def __del__(self):
1032
902
self.disable()
1033
903
1034
904
def init_checker(self):
1035
905
# Schedule a new checker to be started an 'interval' from now,
1036
906
# and every interval from then on.
1037
907
if self.checker_initiator_tag is not None:
1038
GLib.source_remove(self.checker_initiator_tag)
1039
self.checker_initiator_tag = GLib.timeout_add(
908
GObject.source_remove(self.checker_initiator_tag)
909
self.checker_initiator_tag = GObject.timeout_add(
1040
910
int(self.interval.total_seconds() * 1000),
1041
911
self.start_checker)
1042
912
# Schedule a disable() when 'timeout' has passed
1043
913
if self.disable_initiator_tag is not None:
1044
GLib.source_remove(self.disable_initiator_tag)
1045
self.disable_initiator_tag = GLib.timeout_add(
914
GObject.source_remove(self.disable_initiator_tag)
915
self.disable_initiator_tag = GObject.timeout_add(
1046
916
int(self.timeout.total_seconds() * 1000), self.disable)
1047
917
# Also start a new checker *right now*.
1048
918
self.start_checker()
1049
919
1050
920
def checker_callback(self, source, condition, connection,
1051
921
command):
1052
922
"""The checker has completed, so take appropriate actions."""
923
self.checker_callback_tag = None
924
self.checker = None
1053
925
# Read return code from connection (see call_pipe)
1054
926
returncode = connection.recv()
1055
927
connection.close()
1056
self.checker.join()
1057
self.checker_callback_tag = None
1058
self.checker = None
1059
928
1060
929
if returncode >= 0:
1061
930
self.last_checker_status = returncode
1062
931
self.last_checker_signal = None
1072
941
logger.warning("Checker for %(name)s crashed?",
1073
942
vars(self))
1074
943
return False
1075
944
1076
945
def checked_ok(self):
1077
946
"""Assert that the client has been seen, alive and well."""
1078
947
self.last_checked_ok = datetime.datetime.utcnow()
1079
948
self.last_checker_status = 0
1080
949
self.last_checker_signal = None
1081
950
self.bump_timeout()
1082
951
1083
952
def bump_timeout(self, timeout=None):
1084
953
"""Bump up the timeout for this client."""
1085
954
if timeout is None:
1086
955
timeout = self.timeout
1087
956
if self.disable_initiator_tag is not None:
1088
GLib.source_remove(self.disable_initiator_tag)
957
GObject.source_remove(self.disable_initiator_tag)
1089
958
self.disable_initiator_tag = None
1090
959
if getattr(self, "enabled", False):
1091
self.disable_initiator_tag = GLib.timeout_add(
960
self.disable_initiator_tag = GObject.timeout_add(
1092
961
int(timeout.total_seconds() * 1000), self.disable)
1093
962
self.expires = datetime.datetime.utcnow() + timeout
1094
963
1095
964
def need_approval(self):
1096
965
self.last_approval_request = datetime.datetime.utcnow()
1097
966
1098
967
def start_checker(self):
1099
968
"""Start a new checker subprocess if one is not running.
1100
969
1101
970
If a checker already exists, leave it running and do
1102
971
nothing."""
1103
972
# The reason for not killing a running checker is that if we
1108
977
# checkers alone, the checker would have to take more time
1109
978
# than 'timeout' for the client to be disabled, which is as it
1110
979
# should be.
1111
980
1112
981
if self.checker is not None and not self.checker.is_alive():
1113
982
logger.warning("Checker was not alive; joining")
1114
983
self.checker.join()
1118
987
# Escape attributes for the shell
1119
988
escaped_attrs = {
1120
989
attr: re.escape(str(getattr(self, attr)))
1121
for attr in self.runtime_expansions}
990
for attr in self.runtime_expansions }
1122
991
try:
1123
992
command = self.checker_command % escaped_attrs
1124
993
except TypeError as error:
1136
1005
# The exception is when not debugging but nevertheless
1137
1006
# running in the foreground; use the previously
1138
1007
# created wnull.
1139
popen_args = {"close_fds": True,
1140
"shell": True,
1141
"cwd": "/"}
1008
popen_args = { "close_fds": True,
1009
"shell": True,
1010
"cwd": "/" }
1142
1011
if (not self.server_settings["debug"]
1143
1012
and self.server_settings["foreground"]):
1144
1013
popen_args.update({"stdout": wnull,
1145
"stderr": wnull})
1146
pipe = multiprocessing.Pipe(duplex=False)
1014
"stderr": wnull })
1015
pipe = multiprocessing.Pipe(duplex = False)
1147
1016
self.checker = multiprocessing.Process(
1148
target=call_pipe,
1149
args=(pipe[1], subprocess.call, command),
1150
kwargs=popen_args)
1017
target = call_pipe,
1018
args = (pipe[1], subprocess.call, command),
1019
kwargs = popen_args)
1151
1020
self.checker.start()
1152
self.checker_callback_tag = GLib.io_add_watch(
1153
GLib.IOChannel.unix_new(pipe[0].fileno()),
1154
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
1021
self.checker_callback_tag = GObject.io_add_watch(
1022
pipe[0].fileno(), GObject.IO_IN,
1155
1023
self.checker_callback, pipe[0], command)
1156
# Re-run this periodically if run by GLib.timeout_add
1024
# Re-run this periodically if run by GObject.timeout_add
1157
1025
return True
1158
1026
1159
1027
def stop_checker(self):
1160
1028
"""Force the checker process, if any, to stop."""
1161
1029
if self.checker_callback_tag:
1162
GLib.source_remove(self.checker_callback_tag)
1030
GObject.source_remove(self.checker_callback_tag)
1163
1031
self.checker_callback_tag = None
1164
1032
if getattr(self, "checker", None) is None:
1165
1033
return
1174
1042
byte_arrays=False):
1175
1043
"""Decorators for marking methods of a DBusObjectWithProperties to
1176
1044
become properties on the D-Bus.
1177
1045
1178
1046
The decorated method will be called with no arguments by "Get"
1179
1047
and with one argument by "Set".
1180
1048
1181
1049
The parameters, where they are supported, are the same as
1182
1050
dbus.service.method, except there is only "signature", since the
1183
1051
type from Get() and the type sent to Set() is the same.
1187
1055
if byte_arrays and signature != "ay":
1188
1056
raise ValueError("Byte arrays not supported for non-'ay'"
1189
1057
" signature {!r}".format(signature))
1190
1058
1191
1059
def decorator(func):
1192
1060
func._dbus_is_property = True
1193
1061
func._dbus_interface = dbus_interface
1196
1064
func._dbus_name = func.__name__
1197
1065
if func._dbus_name.endswith("_dbus_property"):
1198
1066
func._dbus_name = func._dbus_name[:-14]
1199
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
1067
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
1200
1068
return func
1201
1069
1202
1070
return decorator
1203
1071
1204
1072
1205
1073
def dbus_interface_annotations(dbus_interface):
1206
1074
"""Decorator for marking functions returning interface annotations
1207
1075
1208
1076
Usage:
1209
1077
1210
1078
@dbus_interface_annotations("org.example.Interface")
1211
1079
def _foo(self): # Function name does not matter
1212
1080
return {"org.freedesktop.DBus.Deprecated": "true",
1213
1081
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1214
1082
"false"}
1215
1083
"""
1216
1084
1217
1085
def decorator(func):
1218
1086
func._dbus_is_interface = True
1219
1087
func._dbus_interface = dbus_interface
1220
1088
func._dbus_name = dbus_interface
1221
1089
return func
1222
1090
1223
1091
return decorator
1224
1092
1225
1093
1226
1094
def dbus_annotations(annotations):
1227
1095
"""Decorator to annotate D-Bus methods, signals or properties
1228
1096
Usage:
1229
1097
1230
1098
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1231
1099
"org.freedesktop.DBus.Property."
1232
1100
"EmitsChangedSignal": "false"})
1234
1102
access="r")
1235
1103
def Property_dbus_property(self):
1236
1104
return dbus.Boolean(False)
1237
1105
1238
1106
See also the DBusObjectWithAnnotations class.
1239
1107
"""
1240
1108
1241
1109
def decorator(func):
1242
1110
func._dbus_annotations = annotations
1243
1111
return func
1244
1112
1245
1113
return decorator
1246
1114
1247
1115
1265
1133
1266
1134
class DBusObjectWithAnnotations(dbus.service.Object):
1267
1135
"""A D-Bus object with annotations.
1268
1136
1269
1137
Classes inheriting from this can use the dbus_annotations
1270
1138
decorator to add annotations to methods or signals.
1271
1139
"""
1272
1140
1273
1141
@staticmethod
1274
1142
def _is_dbus_thing(thing):
1275
1143
"""Returns a function testing if an attribute is a D-Bus thing
1276
1144
1277
1145
If called like _is_dbus_thing("method") it returns a function
1278
1146
suitable for use as predicate to inspect.getmembers().
1279
1147
"""
1280
1148
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1281
1149
False)
1282
1150
1283
1151
def _get_all_dbus_things(self, thing):
1284
1152
"""Returns a generator of (name, attribute) pairs
1285
1153
"""
1288
1156
for cls in self.__class__.__mro__
1289
1157
for name, athing in
1290
1158
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1291
1159
1292
1160
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1293
out_signature="s",
1294
path_keyword='object_path',
1295
connection_keyword='connection')
1161
out_signature = "s",
1162
path_keyword = 'object_path',
1163
connection_keyword = 'connection')
1296
1164
def Introspect(self, object_path, connection):
1297
1165
"""Overloading of standard D-Bus method.
1298
1166
1299
1167
Inserts annotation tags on methods and signals.
1300
1168
"""
1301
1169
xmlstring = dbus.service.Object.Introspect(self, object_path,
1302
1170
connection)
1303
1171
try:
1304
1172
document = xml.dom.minidom.parseString(xmlstring)
1305
1173
1306
1174
for if_tag in document.getElementsByTagName("interface"):
1307
1175
# Add annotation tags
1308
1176
for typ in ("method", "signal"):
1335
1203
if_tag.appendChild(ann_tag)
1336
1204
# Fix argument name for the Introspect method itself
1337
1205
if (if_tag.getAttribute("name")
1338
== dbus.INTROSPECTABLE_IFACE):
1206
== dbus.INTROSPECTABLE_IFACE):
1339
1207
for cn in if_tag.getElementsByTagName("method"):
1340
1208
if cn.getAttribute("name") == "Introspect":
1341
1209
for arg in cn.getElementsByTagName("arg"):
1354
1222
1355
1223
class DBusObjectWithProperties(DBusObjectWithAnnotations):
1356
1224
"""A D-Bus object with properties.
1357
1225
1358
1226
Classes inheriting from this can use the dbus_service_property
1359
1227
decorator to expose methods as D-Bus properties. It exposes the
1360
1228
standard Get(), Set(), and GetAll() methods on the D-Bus.
1361
1229
"""
1362
1230
1363
1231
def _get_dbus_property(self, interface_name, property_name):
1364
1232
"""Returns a bound method if one exists which is a D-Bus
1365
1233
property with the specified name and interface.
1370
1238
if (value._dbus_name == property_name
1371
1239
and value._dbus_interface == interface_name):
1372
1240
return value.__get__(self)
1373
1241
1374
1242
# No such property
1375
1243
raise DBusPropertyNotFound("{}:{}.{}".format(
1376
1244
self.dbus_object_path, interface_name, property_name))
1377
1245
1378
1246
@classmethod
1379
1247
def _get_all_interface_names(cls):
1380
1248
"""Get a sequence of all interfaces supported by an object"""
1383
1251
for x in (inspect.getmro(cls))
1384
1252
for attr in dir(x))
1385
1253
if name is not None)
1386
1254
1387
1255
@dbus.service.method(dbus.PROPERTIES_IFACE,
1388
1256
in_signature="ss",
1389
1257
out_signature="v")
1397
1265
if not hasattr(value, "variant_level"):
1398
1266
return value
1399
1267
return type(value)(value, variant_level=value.variant_level+1)
1400
1268
1401
1269
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
1402
1270
def Set(self, interface_name, property_name, value):
1403
1271
"""Standard D-Bus property Set() method, see D-Bus standard.
1415
1283
value = dbus.ByteArray(b''.join(chr(byte)
1416
1284
for byte in value))
1417
1285
prop(value)
1418
1286
1419
1287
@dbus.service.method(dbus.PROPERTIES_IFACE,
1420
1288
in_signature="s",
1421
1289
out_signature="a{sv}")
1422
1290
def GetAll(self, interface_name):
1423
1291
"""Standard D-Bus property GetAll() method, see D-Bus
1424
1292
standard.
1425
1293
1426
1294
Note: Will not include properties with access="write".
1427
1295
"""
1428
1296
properties = {}
1439
1307
properties[name] = value
1440
1308
continue
1441
1309
properties[name] = type(value)(
1442
value, variant_level=value.variant_level + 1)
1310
value, variant_level = value.variant_level + 1)
1443
1311
return dbus.Dictionary(properties, signature="sv")
1444
1312
1445
1313
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1446
1314
def PropertiesChanged(self, interface_name, changed_properties,
1447
1315
invalidated_properties):
1449
1317
standard.
1450
1318
"""
1451
1319
pass
1452
1320
1453
1321
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1454
1322
out_signature="s",
1455
1323
path_keyword='object_path',
1456
1324
connection_keyword='connection')
1457
1325
def Introspect(self, object_path, connection):
1458
1326
"""Overloading of standard D-Bus method.
1459
1327
1460
1328
Inserts property tags and interface annotation tags.
1461
1329
"""
1462
1330
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1464
1332
connection)
1465
1333
try:
1466
1334
document = xml.dom.minidom.parseString(xmlstring)
1467
1335
1468
1336
def make_tag(document, name, prop):
1469
1337
e = document.createElement("property")
1470
1338
e.setAttribute("name", name)
1471
1339
e.setAttribute("type", prop._dbus_signature)
1472
1340
e.setAttribute("access", prop._dbus_access)
1473
1341
return e
1474
1342
1475
1343
for if_tag in document.getElementsByTagName("interface"):
1476
1344
# Add property tags
1477
1345
for tag in (make_tag(document, name, prop)
1519
1387
exc_info=error)
1520
1388
return xmlstring
1521
1389
1522
1523
1390
try:
1524
1391
dbus.OBJECT_MANAGER_IFACE
1525
1392
except AttributeError:
1526
1393
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1527
1394
1528
1529
1395
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1530
1396
"""A D-Bus object with an ObjectManager.
1531
1397
1532
1398
Classes inheriting from this exposes the standard
1533
1399
GetManagedObjects call and the InterfacesAdded and
1534
1400
InterfacesRemoved signals on the standard
1535
1401
"org.freedesktop.DBus.ObjectManager" interface.
1536
1402
1537
1403
Note: No signals are sent automatically; they must be sent
1538
1404
manually.
1539
1405
"""
1540
1406
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1541
out_signature="a{oa{sa{sv}}}")
1407
out_signature = "a{oa{sa{sv}}}")
1542
1408
def GetManagedObjects(self):
1543
1409
"""This function must be overridden"""
1544
1410
raise NotImplementedError()
1545
1411
1546
1412
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1547
signature="oa{sa{sv}}")
1413
signature = "oa{sa{sv}}")
1548
1414
def InterfacesAdded(self, object_path, interfaces_and_properties):
1549
1415
pass
1550
1551
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1416
1417
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature = "oas")
1552
1418
def InterfacesRemoved(self, object_path, interfaces):
1553
1419
pass
1554
1420
1555
1421
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1556
out_signature="s",
1557
path_keyword='object_path',
1558
connection_keyword='connection')
1422
out_signature = "s",
1423
path_keyword = 'object_path',
1424
connection_keyword = 'connection')
1559
1425
def Introspect(self, object_path, connection):
1560
1426
"""Overloading of standard D-Bus method.
1561
1427
1562
1428
Override return argument name of GetManagedObjects to be
1563
1429
"objpath_interfaces_and_properties"
1564
1430
"""
1567
1433
connection)
1568
1434
try:
1569
1435
document = xml.dom.minidom.parseString(xmlstring)
1570
1436
1571
1437
for if_tag in document.getElementsByTagName("interface"):
1572
1438
# Fix argument name for the GetManagedObjects method
1573
1439
if (if_tag.getAttribute("name")
1574
== dbus.OBJECT_MANAGER_IFACE):
1440
== dbus.OBJECT_MANAGER_IFACE):
1575
1441
for cn in if_tag.getElementsByTagName("method"):
1576
1442
if (cn.getAttribute("name")
1577
1443
== "GetManagedObjects"):
1587
1453
except (AttributeError, xml.dom.DOMException,
1588
1454
xml.parsers.expat.ExpatError) as error:
1589
1455
logger.error("Failed to override Introspection method",
1590
exc_info=error)
1456
exc_info = error)
1591
1457
return xmlstring
1592
1458
1593
1594
1459
def datetime_to_dbus(dt, variant_level=0):
1595
1460
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1596
1461
if dt is None:
1597
return dbus.String("", variant_level=variant_level)
1462
return dbus.String("", variant_level = variant_level)
1598
1463
return dbus.String(dt.isoformat(), variant_level=variant_level)
1599
1464
1600
1465
1603
1468
dbus.service.Object, it will add alternate D-Bus attributes with
1604
1469
interface names according to the "alt_interface_names" mapping.
1605
1470
Usage:
1606
1471
1607
1472
@alternate_dbus_interfaces({"org.example.Interface":
1608
1473
"net.example.AlternateInterface"})
1609
1474
class SampleDBusObject(dbus.service.Object):
1610
1475
@dbus.service.method("org.example.Interface")
1611
1476
def SampleDBusMethod():
1612
1477
pass
1613
1478
1614
1479
The above "SampleDBusMethod" on "SampleDBusObject" will be
1615
1480
reachable via two interfaces: "org.example.Interface" and
1616
1481
"net.example.AlternateInterface", the latter of which will have
1617
1482
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1618
1483
"true", unless "deprecate" is passed with a False value.
1619
1484
1620
1485
This works for methods and signals, and also for D-Bus properties
1621
1486
(from DBusObjectWithProperties) and interfaces (from the
1622
1487
dbus_interface_annotations decorator).
1623
1488
"""
1624
1489
1625
1490
def wrapper(cls):
1626
1491
for orig_interface_name, alt_interface_name in (
1627
1492
alt_interface_names.items()):
1642
1507
interface_names.add(alt_interface)
1643
1508
# Is this a D-Bus signal?
1644
1509
if getattr(attribute, "_dbus_is_signal", False):
1645
# Extract the original non-method undecorated
1646
# function by black magic
1647
1510
if sys.version_info.major == 2:
1511
# Extract the original non-method undecorated
1512
# function by black magic
1648
1513
nonmethod_func = (dict(
1649
1514
zip(attribute.func_code.co_freevars,
1650
1515
attribute.__closure__))
1651
1516
["func"].cell_contents)
1652
1517
else:
1653
nonmethod_func = (dict(
1654
zip(attribute.__code__.co_freevars,
1655
attribute.__closure__))
1656
["func"].cell_contents)
1518
nonmethod_func = attribute
1657
1519
# Create a new, but exactly alike, function
1658
1520
# object, and decorate it to be a new D-Bus signal
1659
1521
# with the alternate D-Bus interface name
1660
new_function = copy_function(nonmethod_func)
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__)
1661
1536
new_function = (dbus.service.signal(
1662
1537
alt_interface,
1663
1538
attribute._dbus_signature)(new_function))
1667
1542
attribute._dbus_annotations)
1668
1543
except AttributeError:
1669
1544
pass
1670
1671
1545
# Define a creator of a function to call both the
1672
1546
# original and alternate functions, so both the
1673
1547
# original and alternate signals gets sent when
1676
1550
"""This function is a scope container to pass
1677
1551
func1 and func2 to the "call_both" function
1678
1552
outside of its arguments"""
1679
1553
1680
1554
@functools.wraps(func2)
1681
1555
def call_both(*args, **kwargs):
1682
1556
"""This function will emit two D-Bus
1683
1557
signals by calling func1 and func2"""
1684
1558
func1(*args, **kwargs)
1685
1559
func2(*args, **kwargs)
1686
# Make wrapper function look like a D-Bus
1687
# signal
1560
# Make wrapper function look like a D-Bus signal
1688
1561
for name, attr in inspect.getmembers(func2):
1689
1562
if name.startswith("_dbus_"):
1690
1563
setattr(call_both, name, attr)
1691
1564
1692
1565
return call_both
1693
1566
# Create the "call_both" function and add it to
1694
1567
# the class
1704
1577
alt_interface,
1705
1578
attribute._dbus_in_signature,
1706
1579
attribute._dbus_out_signature)
1707
(copy_function(attribute)))
1580
(types.FunctionType(attribute.func_code,
1581
attribute.func_globals,
1582
attribute.func_name,
1583
attribute.func_defaults,
1584
attribute.func_closure)))
1708
1585
# Copy annotations, if any
1709
1586
try:
1710
1587
attr[attrname]._dbus_annotations = dict(
1722
1599
attribute._dbus_access,
1723
1600
attribute._dbus_get_args_options
1724
1601
["byte_arrays"])
1725
(copy_function(attribute)))
1602
(types.FunctionType(
1603
attribute.func_code,
1604
attribute.func_globals,
1605
attribute.func_name,
1606
attribute.func_defaults,
1607
attribute.func_closure)))
1726
1608
# Copy annotations, if any
1727
1609
try:
1728
1610
attr[attrname]._dbus_annotations = dict(
1737
1619
# to the class.
1738
1620
attr[attrname] = (
1739
1621
dbus_interface_annotations(alt_interface)
1740
(copy_function(attribute)))
1622
(types.FunctionType(attribute.func_code,
1623
attribute.func_globals,
1624
attribute.func_name,
1625
attribute.func_defaults,
1626
attribute.func_closure)))
1741
1627
if deprecate:
1742
1628
# Deprecate all alternate interfaces
1743
iname = "_AlternateDBusNames_interface_annotation{}"
1629
iname="_AlternateDBusNames_interface_annotation{}"
1744
1630
for interface_name in interface_names:
1745
1631
1746
1632
@dbus_interface_annotations(interface_name)
1747
1633
def func(self):
1748
return {"org.freedesktop.DBus.Deprecated":
1749
"true"}
1634
return { "org.freedesktop.DBus.Deprecated":
1635
"true" }
1750
1636
# Find an unused name
1751
1637
for aname in (iname.format(i)
1752
1638
for i in itertools.count()):
1756
1642
if interface_names:
1757
1643
# Replace the class with a new subclass of it with
1758
1644
# methods, signals, etc. as created above.
1759
if sys.version_info.major == 2:
1760
cls = type(b"{}Alternate".format(cls.__name__),
1761
(cls, ), attr)
1762
else:
1763
cls = type("{}Alternate".format(cls.__name__),
1764
(cls, ), attr)
1645
cls = type(b"{}Alternate".format(cls.__name__),
1646
(cls, ), attr)
1765
1647
return cls
1766
1648
1767
1649
return wrapper
1768
1650
1769
1651
1771
1653
"se.bsnet.fukt.Mandos"})
1772
1654
class ClientDBus(Client, DBusObjectWithProperties):
1773
1655
"""A Client class using D-Bus
1774
1656
1775
1657
Attributes:
1776
1658
dbus_object_path: dbus.ObjectPath
1777
1659
bus: dbus.SystemBus()
1778
1660
"""
1779
1661
1780
1662
runtime_expansions = (Client.runtime_expansions
1781
1663
+ ("dbus_object_path", ))
1782
1664
1783
1665
_interface = "se.recompile.Mandos.Client"
1784
1666
1785
1667
# dbus.service.Object doesn't use super(), so we can't either.
1786
1787
def __init__(self, bus=None, *args, **kwargs):
1668
1669
def __init__(self, bus = None, *args, **kwargs):
1788
1670
self.bus = bus
1789
1671
Client.__init__(self, *args, **kwargs)
1790
1672
# Only now, when this client is initialized, can it show up on
1796
1678
"/clients/" + client_object_name)
1797
1679
DBusObjectWithProperties.__init__(self, self.bus,
1798
1680
self.dbus_object_path)
1799
1681
1800
1682
def notifychangeproperty(transform_func, dbus_name,
1801
1683
type_func=lambda x: x,
1802
1684
variant_level=1,
1804
1686
_interface=_interface):
1805
1687
""" Modify a variable so that it's a property which announces
1806
1688
its changes to DBus.
1807
1689
1808
1690
transform_fun: Function that takes a value and a variant_level
1809
1691
and transforms it to a D-Bus type.
1810
1692
dbus_name: D-Bus name of the variable
1813
1695
variant_level: D-Bus variant level. Default: 1
1814
1696
"""
1815
1697
attrname = "_{}".format(dbus_name)
1816
1698
1817
1699
def setter(self, value):
1818
1700
if hasattr(self, "dbus_object_path"):
1819
1701
if (not hasattr(self, attrname) or
1826
1708
else:
1827
1709
dbus_value = transform_func(
1828
1710
type_func(value),
1829
variant_level=variant_level)
1711
variant_level = variant_level)
1830
1712
self.PropertyChanged(dbus.String(dbus_name),
1831
1713
dbus_value)
1832
1714
self.PropertiesChanged(
1833
1715
_interface,
1834
dbus.Dictionary({dbus.String(dbus_name):
1835
dbus_value}),
1716
dbus.Dictionary({ dbus.String(dbus_name):
1717
dbus_value }),
1836
1718
dbus.Array())
1837
1719
setattr(self, attrname, value)
1838
1720
1839
1721
return property(lambda self: getattr(self, attrname), setter)
1840
1722
1841
1723
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1842
1724
approvals_pending = notifychangeproperty(dbus.Boolean,
1843
1725
"ApprovalPending",
1844
type_func=bool)
1726
type_func = bool)
1845
1727
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1846
1728
last_enabled = notifychangeproperty(datetime_to_dbus,
1847
1729
"LastEnabled")
1848
1730
checker = notifychangeproperty(
1849
1731
dbus.Boolean, "CheckerRunning",
1850
type_func=lambda checker: checker is not None)
1732
type_func = lambda checker: checker is not None)
1851
1733
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1852
1734
"LastCheckedOK")
1853
1735
last_checker_status = notifychangeproperty(dbus.Int16,
1858
1740
"ApprovedByDefault")
1859
1741
approval_delay = notifychangeproperty(
1860
1742
dbus.UInt64, "ApprovalDelay",
1861
type_func=lambda td: td.total_seconds() * 1000)
1743
type_func = lambda td: td.total_seconds() * 1000)
1862
1744
approval_duration = notifychangeproperty(
1863
1745
dbus.UInt64, "ApprovalDuration",
1864
type_func=lambda td: td.total_seconds() * 1000)
1746
type_func = lambda td: td.total_seconds() * 1000)
1865
1747
host = notifychangeproperty(dbus.String, "Host")
1866
1748
timeout = notifychangeproperty(
1867
1749
dbus.UInt64, "Timeout",
1868
type_func=lambda td: td.total_seconds() * 1000)
1750
type_func = lambda td: td.total_seconds() * 1000)
1869
1751
extended_timeout = notifychangeproperty(
1870
1752
dbus.UInt64, "ExtendedTimeout",
1871
type_func=lambda td: td.total_seconds() * 1000)
1753
type_func = lambda td: td.total_seconds() * 1000)
1872
1754
interval = notifychangeproperty(
1873
1755
dbus.UInt64, "Interval",
1874
type_func=lambda td: td.total_seconds() * 1000)
1756
type_func = lambda td: td.total_seconds() * 1000)
1875
1757
checker_command = notifychangeproperty(dbus.String, "Checker")
1876
1758
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1877
1759
invalidate_only=True)
1878
1760
1879
1761
del notifychangeproperty
1880
1762
1881
1763
def __del__(self, *args, **kwargs):
1882
1764
try:
1883
1765
self.remove_from_connection()
1886
1768
if hasattr(DBusObjectWithProperties, "__del__"):
1887
1769
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1888
1770
Client.__del__(self, *args, **kwargs)
1889
1771
1890
1772
def checker_callback(self, source, condition,
1891
1773
connection, command, *args, **kwargs):
1892
1774
ret = Client.checker_callback(self, source, condition,
1908
1790
| self.last_checker_signal),
1909
1791
dbus.String(command))
1910
1792
return ret
1911
1793
1912
1794
def start_checker(self, *args, **kwargs):
1913
1795
old_checker_pid = getattr(self.checker, "pid", None)
1914
1796
r = Client.start_checker(self, *args, **kwargs)
1918
1800
# Emit D-Bus signal
1919
1801
self.CheckerStarted(self.current_checker_command)
1920
1802
return r
1921
1803
1922
1804
def _reset_approved(self):
1923
1805
self.approved = None
1924
1806
return False
1925
1807
1926
1808
def approve(self, value=True):
1927
1809
self.approved = value
1928
GLib.timeout_add(int(self.approval_duration.total_seconds()
1929
* 1000), self._reset_approved)
1810
GObject.timeout_add(int(self.approval_duration.total_seconds()
1811
* 1000), self._reset_approved)
1930
1812
self.send_changedstate()
1931
1932
# D-Bus methods, signals & properties
1933
1934
# Interfaces
1935
1936
# Signals
1937
1813
1814
## D-Bus methods, signals & properties
1815
1816
## Interfaces
1817
1818
## Signals
1819
1938
1820
# CheckerCompleted - signal
1939
1821
@dbus.service.signal(_interface, signature="nxs")
1940
1822
def CheckerCompleted(self, exitcode, waitstatus, command):
1941
1823
"D-Bus signal"
1942
1824
pass
1943
1825
1944
1826
# CheckerStarted - signal
1945
1827
@dbus.service.signal(_interface, signature="s")
1946
1828
def CheckerStarted(self, command):
1947
1829
"D-Bus signal"
1948
1830
pass
1949
1831
1950
1832
# PropertyChanged - signal
1951
1833
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1952
1834
@dbus.service.signal(_interface, signature="sv")
1953
1835
def PropertyChanged(self, property, value):
1954
1836
"D-Bus signal"
1955
1837
pass
1956
1838
1957
1839
# GotSecret - signal
1958
1840
@dbus.service.signal(_interface)
1959
1841
def GotSecret(self):
1962
1844
server to mandos-client
1963
1845
"""
1964
1846
pass
1965
1847
1966
1848
# Rejected - signal
1967
1849
@dbus.service.signal(_interface, signature="s")
1968
1850
def Rejected(self, reason):
1969
1851
"D-Bus signal"
1970
1852
pass
1971
1853
1972
1854
# NeedApproval - signal
1973
1855
@dbus.service.signal(_interface, signature="tb")
1974
1856
def NeedApproval(self, timeout, default):
1975
1857
"D-Bus signal"
1976
1858
return self.need_approval()
1977
1978
# Methods
1979
1859
1860
## Methods
1861
1980
1862
# Approve - method
1981
1863
@dbus.service.method(_interface, in_signature="b")
1982
1864
def Approve(self, value):
1983
1865
self.approve(value)
1984
1866
1985
1867
# CheckedOK - method
1986
1868
@dbus.service.method(_interface)
1987
1869
def CheckedOK(self):
1988
1870
self.checked_ok()
1989
1871
1990
1872
# Enable - method
1991
1873
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1992
1874
@dbus.service.method(_interface)
1993
1875
def Enable(self):
1994
1876
"D-Bus method"
1995
1877
self.enable()
1996
1878
1997
1879
# StartChecker - method
1998
1880
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1999
1881
@dbus.service.method(_interface)
2000
1882
def StartChecker(self):
2001
1883
"D-Bus method"
2002
1884
self.start_checker()
2003
1885
2004
1886
# Disable - method
2005
1887
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2006
1888
@dbus.service.method(_interface)
2007
1889
def Disable(self):
2008
1890
"D-Bus method"
2009
1891
self.disable()
2010
1892
2011
1893
# StopChecker - method
2012
1894
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2013
1895
@dbus.service.method(_interface)
2014
1896
def StopChecker(self):
2015
1897
self.stop_checker()
2016
2017
# Properties
2018
1898
1899
## Properties
1900
2019
1901
# ApprovalPending - property
2020
1902
@dbus_service_property(_interface, signature="b", access="read")
2021
1903
def ApprovalPending_dbus_property(self):
2022
1904
return dbus.Boolean(bool(self.approvals_pending))
2023
1905
2024
1906
# ApprovedByDefault - property
2025
1907
@dbus_service_property(_interface,
2026
1908
signature="b",
2029
1911
if value is None: # get
2030
1912
return dbus.Boolean(self.approved_by_default)
2031
1913
self.approved_by_default = bool(value)
2032
1914
2033
1915
# ApprovalDelay - property
2034
1916
@dbus_service_property(_interface,
2035
1917
signature="t",
2039
1921
return dbus.UInt64(self.approval_delay.total_seconds()
2040
1922
* 1000)
2041
1923
self.approval_delay = datetime.timedelta(0, 0, 0, value)
2042
1924
2043
1925
# ApprovalDuration - property
2044
1926
@dbus_service_property(_interface,
2045
1927
signature="t",
2049
1931
return dbus.UInt64(self.approval_duration.total_seconds()
2050
1932
* 1000)
2051
1933
self.approval_duration = datetime.timedelta(0, 0, 0, value)
2052
1934
2053
1935
# Name - property
2054
1936
@dbus_annotations(
2055
1937
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2056
1938
@dbus_service_property(_interface, signature="s", access="read")
2057
1939
def Name_dbus_property(self):
2058
1940
return dbus.String(self.name)
2059
2060
# KeyID - property
2061
@dbus_annotations(
2062
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2063
@dbus_service_property(_interface, signature="s", access="read")
2064
def KeyID_dbus_property(self):
2065
return dbus.String(self.key_id)
2066
1941
2067
1942
# Fingerprint - property
2068
1943
@dbus_annotations(
2069
1944
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2070
1945
@dbus_service_property(_interface, signature="s", access="read")
2071
1946
def Fingerprint_dbus_property(self):
2072
1947
return dbus.String(self.fingerprint)
2073
1948
2074
1949
# Host - property
2075
1950
@dbus_service_property(_interface,
2076
1951
signature="s",
2079
1954
if value is None: # get
2080
1955
return dbus.String(self.host)
2081
1956
self.host = str(value)
2082
1957
2083
1958
# Created - property
2084
1959
@dbus_annotations(
2085
1960
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2086
1961
@dbus_service_property(_interface, signature="s", access="read")
2087
1962
def Created_dbus_property(self):
2088
1963
return datetime_to_dbus(self.created)
2089
1964
2090
1965
# LastEnabled - property
2091
1966
@dbus_service_property(_interface, signature="s", access="read")
2092
1967
def LastEnabled_dbus_property(self):
2093
1968
return datetime_to_dbus(self.last_enabled)
2094
1969
2095
1970
# Enabled - property
2096
1971
@dbus_service_property(_interface,
2097
1972
signature="b",
2103
1978
self.enable()
2104
1979
else:
2105
1980
self.disable()
2106
1981
2107
1982
# LastCheckedOK - property
2108
1983
@dbus_service_property(_interface,
2109
1984
signature="s",
2113
1988
self.checked_ok()
2114
1989
return
2115
1990
return datetime_to_dbus(self.last_checked_ok)
2116
1991
2117
1992
# LastCheckerStatus - property
2118
1993
@dbus_service_property(_interface, signature="n", access="read")
2119
1994
def LastCheckerStatus_dbus_property(self):
2120
1995
return dbus.Int16(self.last_checker_status)
2121
1996
2122
1997
# Expires - property
2123
1998
@dbus_service_property(_interface, signature="s", access="read")
2124
1999
def Expires_dbus_property(self):
2125
2000
return datetime_to_dbus(self.expires)
2126
2001
2127
2002
# LastApprovalRequest - property
2128
2003
@dbus_service_property(_interface, signature="s", access="read")
2129
2004
def LastApprovalRequest_dbus_property(self):
2130
2005
return datetime_to_dbus(self.last_approval_request)
2131
2006
2132
2007
# Timeout - property
2133
2008
@dbus_service_property(_interface,
2134
2009
signature="t",
2149
2024
if (getattr(self, "disable_initiator_tag", None)
2150
2025
is None):
2151
2026
return
2152
GLib.source_remove(self.disable_initiator_tag)
2153
self.disable_initiator_tag = GLib.timeout_add(
2027
GObject.source_remove(self.disable_initiator_tag)
2028
self.disable_initiator_tag = GObject.timeout_add(
2154
2029
int((self.expires - now).total_seconds() * 1000),
2155
2030
self.disable)
2156
2031
2157
2032
# ExtendedTimeout - property
2158
2033
@dbus_service_property(_interface,
2159
2034
signature="t",
2163
2038
return dbus.UInt64(self.extended_timeout.total_seconds()
2164
2039
* 1000)
2165
2040
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2166
2041
2167
2042
# Interval - property
2168
2043
@dbus_service_property(_interface,
2169
2044
signature="t",
2176
2051
return
2177
2052
if self.enabled:
2178
2053
# Reschedule checker run
2179
GLib.source_remove(self.checker_initiator_tag)
2180
self.checker_initiator_tag = GLib.timeout_add(
2054
GObject.source_remove(self.checker_initiator_tag)
2055
self.checker_initiator_tag = GObject.timeout_add(
2181
2056
value, self.start_checker)
2182
self.start_checker() # Start one now, too
2183
2057
self.start_checker() # Start one now, too
2058
2184
2059
# Checker - property
2185
2060
@dbus_service_property(_interface,
2186
2061
signature="s",
2189
2064
if value is None: # get
2190
2065
return dbus.String(self.checker_command)
2191
2066
self.checker_command = str(value)
2192
2067
2193
2068
# CheckerRunning - property
2194
2069
@dbus_service_property(_interface,
2195
2070
signature="b",
2201
2076
self.start_checker()
2202
2077
else:
2203
2078
self.stop_checker()
2204
2079
2205
2080
# ObjectPath - property
2206
2081
@dbus_annotations(
2207
2082
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2208
2083
"org.freedesktop.DBus.Deprecated": "true"})
2209
2084
@dbus_service_property(_interface, signature="o", access="read")
2210
2085
def ObjectPath_dbus_property(self):
2211
return self.dbus_object_path # is already a dbus.ObjectPath
2212
2086
return self.dbus_object_path # is already a dbus.ObjectPath
2087
2213
2088
# Secret = property
2214
2089
@dbus_annotations(
2215
2090
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2220
2095
byte_arrays=True)
2221
2096
def Secret_dbus_property(self, value):
2222
2097
self.secret = bytes(value)
2223
2098
2224
2099
del _interface
2225
2100
2226
2101
2227
class ProxyClient:
2228
def __init__(self, child_pipe, key_id, fpr, address):
2102
class ProxyClient(object):
2103
def __init__(self, child_pipe, fpr, address):
2229
2104
self._pipe = child_pipe
2230
self._pipe.send(('init', key_id, fpr, address))
2105
self._pipe.send(('init', fpr, address))
2231
2106
if not self._pipe.recv():
2232
raise KeyError(key_id or fpr)
2233
2107
raise KeyError(fpr)
2108
2234
2109
def __getattribute__(self, name):
2235
2110
if name == '_pipe':
2236
2111
return super(ProxyClient, self).__getattribute__(name)
2239
2114
if data[0] == 'data':
2240
2115
return data[1]
2241
2116
if data[0] == 'function':
2242
2117
2243
2118
def func(*args, **kwargs):
2244
2119
self._pipe.send(('funcall', name, args, kwargs))
2245
2120
return self._pipe.recv()[1]
2246
2121
2247
2122
return func
2248
2123
2249
2124
def __setattr__(self, name, value):
2250
2125
if name == '_pipe':
2251
2126
return super(ProxyClient, self).__setattr__(name, value)
2254
2129
2255
2130
class ClientHandler(socketserver.BaseRequestHandler, object):
2256
2131
"""A class to handle client connections.
2257
2132
2258
2133
Instantiated once for each connection to handle it.
2259
2134
Note: This will run in its own forked process."""
2260
2135
2261
2136
def handle(self):
2262
2137
with contextlib.closing(self.server.child_pipe) as child_pipe:
2263
2138
logger.info("TCP connection from: %s",
2264
2139
str(self.client_address))
2265
2140
logger.debug("Pipe FD: %d",
2266
2141
self.server.child_pipe.fileno())
2267
2142
2268
2143
session = gnutls.ClientSession(self.request)
2269
2270
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2271
# "+AES-256-CBC", "+SHA1",
2272
# "+COMP-NULL", "+CTYPE-OPENPGP",
2273
# "+DHE-DSS"))
2144
2145
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
2146
# "+AES-256-CBC", "+SHA1",
2147
# "+COMP-NULL", "+CTYPE-OPENPGP",
2148
# "+DHE-DSS"))
2274
2149
# Use a fallback default, since this MUST be set.
2275
2150
priority = self.server.gnutls_priority
2276
2151
if priority is None:
2277
2152
priority = "NORMAL"
2278
gnutls.priority_set_direct(session._c_object,
2279
priority.encode("utf-8"),
2153
gnutls.priority_set_direct(session._c_object, priority,
2280
2154
None)
2281
2155
2282
2156
# Start communication using the Mandos protocol
2283
2157
# Get protocol number
2284
2158
line = self.request.makefile().readline()
2289
2163
except (ValueError, IndexError, RuntimeError) as error:
2290
2164
logger.error("Unknown protocol version: %s", error)
2291
2165
return
2292
2166
2293
2167
# Start GnuTLS connection
2294
2168
try:
2295
2169
session.handshake()
2299
2173
# established. Just abandon the request.
2300
2174
return
2301
2175
logger.debug("Handshake succeeded")
2302
2176
2303
2177
approval_required = False
2304
2178
try:
2305
if gnutls.has_rawpk:
2306
fpr = b""
2307
try:
2308
key_id = self.key_id(
2309
self.peer_certificate(session))
2310
except (TypeError, gnutls.Error) as error:
2311
logger.warning("Bad certificate: %s", error)
2312
return
2313
logger.debug("Key ID: %s", key_id)
2314
2315
else:
2316
key_id = b""
2317
try:
2318
fpr = self.fingerprint(
2319
self.peer_certificate(session))
2320
except (TypeError, gnutls.Error) as error:
2321
logger.warning("Bad certificate: %s", error)
2322
return
2323
logger.debug("Fingerprint: %s", fpr)
2324
2325
try:
2326
client = ProxyClient(child_pipe, key_id, fpr,
2179
try:
2180
fpr = self.fingerprint(
2181
self.peer_certificate(session))
2182
except (TypeError, gnutls.Error) as error:
2183
logger.warning("Bad certificate: %s", error)
2184
return
2185
logger.debug("Fingerprint: %s", fpr)
2186
2187
try:
2188
client = ProxyClient(child_pipe, fpr,
2327
2189
self.client_address)
2328
2190
except KeyError:
2329
2191
return
2330
2192
2331
2193
if client.approval_delay:
2332
2194
delay = client.approval_delay
2333
2195
client.approvals_pending += 1
2334
2196
approval_required = True
2335
2197
2336
2198
while True:
2337
2199
if not client.enabled:
2338
2200
logger.info("Client %s is disabled",
2341
2203
# Emit D-Bus signal
2342
2204
client.Rejected("Disabled")
2343
2205
return
2344
2206
2345
2207
if client.approved or not client.approval_delay:
2346
# We are approved or approval is disabled
2208
#We are approved or approval is disabled
2347
2209
break
2348
2210
elif client.approved is None:
2349
2211
logger.info("Client %s needs approval",
2360
2222
# Emit D-Bus signal
2361
2223
client.Rejected("Denied")
2362
2224
return
2363
2364
# wait until timeout or approved
2225
2226
#wait until timeout or approved
2365
2227
time = datetime.datetime.now()
2366
2228
client.changedstate.acquire()
2367
2229
client.changedstate.wait(delay.total_seconds())
2380
2242
break
2381
2243
else:
2382
2244
delay -= time2 - time
2383
2245
2384
2246
try:
2385
2247
session.send(client.secret)
2386
2248
except gnutls.Error as error:
2387
2249
logger.warning("gnutls send failed",
2388
exc_info=error)
2250
exc_info = error)
2389
2251
return
2390
2252
2391
2253
logger.info("Sending secret to %s", client.name)
2392
2254
# bump the timeout using extended_timeout
2393
2255
client.bump_timeout(client.extended_timeout)
2394
2256
if self.server.use_dbus:
2395
2257
# Emit D-Bus signal
2396
2258
client.GotSecret()
2397
2259
2398
2260
finally:
2399
2261
if approval_required:
2400
2262
client.approvals_pending -= 1
2403
2265
except gnutls.Error as error:
2404
2266
logger.warning("GnuTLS bye failed",
2405
2267
exc_info=error)
2406
2268
2407
2269
@staticmethod
2408
2270
def peer_certificate(session):
2409
"Return the peer's certificate as a bytestring"
2410
try:
2411
cert_type = gnutls.certificate_type_get2(session._c_object,
2412
gnutls.CTYPE_PEERS)
2413
except AttributeError:
2414
cert_type = gnutls.certificate_type_get(session._c_object)
2415
if gnutls.has_rawpk:
2416
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2417
else:
2418
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2419
# If not a valid certificate type...
2420
if cert_type not in valid_cert_types:
2421
logger.info("Cert type %r not in %r", cert_type,
2422
valid_cert_types)
2271
"Return the peer's OpenPGP certificate as a bytestring"
2272
# If not an OpenPGP certificate...
2273
if (gnutls.certificate_type_get(session._c_object)
2274
!= gnutls.CRT_OPENPGP):
2423
2275
# ...return invalid data
2424
2276
return b""
2425
2277
list_size = ctypes.c_uint(1)
2431
2283
return None
2432
2284
cert = cert_list[0]
2433
2285
return ctypes.string_at(cert.data, cert.size)
2434
2435
@staticmethod
2436
def key_id(certificate):
2437
"Convert a certificate bytestring to a hexdigit key ID"
2438
# New GnuTLS "datum" with the public key
2439
datum = gnutls.datum_t(
2440
ctypes.cast(ctypes.c_char_p(certificate),
2441
ctypes.POINTER(ctypes.c_ubyte)),
2442
ctypes.c_uint(len(certificate)))
2443
# XXX all these need to be created in the gnutls "module"
2444
# New empty GnuTLS certificate
2445
pubkey = gnutls.pubkey_t()
2446
gnutls.pubkey_init(ctypes.byref(pubkey))
2447
# Import the raw public key into the certificate
2448
gnutls.pubkey_import(pubkey,
2449
ctypes.byref(datum),
2450
gnutls.X509_FMT_DER)
2451
# New buffer for the key ID
2452
buf = ctypes.create_string_buffer(32)
2453
buf_len = ctypes.c_size_t(len(buf))
2454
# Get the key ID from the raw public key into the buffer
2455
gnutls.pubkey_get_key_id(pubkey,
2456
gnutls.KEYID_USE_SHA256,
2457
ctypes.cast(ctypes.byref(buf),
2458
ctypes.POINTER(ctypes.c_ubyte)),
2459
ctypes.byref(buf_len))
2460
# Deinit the certificate
2461
gnutls.pubkey_deinit(pubkey)
2462
2463
# Convert the buffer to a Python bytestring
2464
key_id = ctypes.string_at(buf, buf_len.value)
2465
# Convert the bytestring to hexadecimal notation
2466
hex_key_id = binascii.hexlify(key_id).upper()
2467
return hex_key_id
2468
2286
2469
2287
@staticmethod
2470
2288
def fingerprint(openpgp):
2471
2289
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2486
2304
ctypes.byref(crtverify))
2487
2305
if crtverify.value != 0:
2488
2306
gnutls.openpgp_crt_deinit(crt)
2489
raise gnutls.CertificateSecurityError(code
2490
=crtverify.value)
2307
raise gnutls.CertificateSecurityError("Verify failed")
2491
2308
# New buffer for the fingerprint
2492
2309
buf = ctypes.create_string_buffer(20)
2493
2310
buf_len = ctypes.c_size_t()
2503
2320
return hex_fpr
2504
2321
2505
2322
2506
class MultiprocessingMixIn:
2323
class MultiprocessingMixIn(object):
2507
2324
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2508
2325
2509
2326
def sub_process_main(self, request, address):
2510
2327
try:
2511
2328
self.finish_request(request, address)
2512
2329
except Exception:
2513
2330
self.handle_error(request, address)
2514
2331
self.close_request(request)
2515
2332
2516
2333
def process_request(self, request, address):
2517
2334
"""Start a new process to process the request."""
2518
proc = multiprocessing.Process(target=self.sub_process_main,
2519
args=(request, address))
2335
proc = multiprocessing.Process(target = self.sub_process_main,
2336
args = (request, address))
2520
2337
proc.start()
2521
2338
return proc
2522
2339
2523
2340
2524
class MultiprocessingMixInWithPipe(MultiprocessingMixIn):
2341
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2525
2342
""" adds a pipe to the MixIn """
2526
2343
2527
2344
def process_request(self, request, client_address):
2528
2345
"""Overrides and wraps the original process_request().
2529
2346
2530
2347
This function creates a new pipe in self.pipe
2531
2348
"""
2532
2349
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2533
2350
2534
2351
proc = MultiprocessingMixIn.process_request(self, request,
2535
2352
client_address)
2536
2353
self.child_pipe.close()
2537
2354
self.add_pipe(parent_pipe, proc)
2538
2355
2539
2356
def add_pipe(self, parent_pipe, proc):
2540
2357
"""Dummy function; override as necessary"""
2541
2358
raise NotImplementedError()
2542
2359
2543
2360
2544
2361
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2545
socketserver.TCPServer):
2362
socketserver.TCPServer, object):
2546
2363
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
2547
2364
2548
2365
Attributes:
2549
2366
enabled: Boolean; whether this server is activated yet
2550
2367
interface: None or a network interface name (string)
2551
2368
use_ipv6: Boolean; to use IPv6 or not
2552
2369
"""
2553
2370
2554
2371
def __init__(self, server_address, RequestHandlerClass,
2555
2372
interface=None,
2556
2373
use_ipv6=True,
2566
2383
self.socketfd = socketfd
2567
2384
# Save the original socket.socket() function
2568
2385
self.socket_socket = socket.socket
2569
2570
2386
# To implement --socket, we monkey patch socket.socket.
2571
#
2387
#
2572
2388
# (When socketserver.TCPServer is a new-style class, we
2573
2389
# could make self.socket into a property instead of monkey
2574
2390
# patching socket.socket.)
2575
#
2391
#
2576
2392
# Create a one-time-only replacement for socket.socket()
2577
2393
@functools.wraps(socket.socket)
2578
2394
def socket_wrapper(*args, **kwargs):
2590
2406
# socket_wrapper(), if socketfd was set.
2591
2407
socketserver.TCPServer.__init__(self, server_address,
2592
2408
RequestHandlerClass)
2593
2409
2594
2410
def server_bind(self):
2595
2411
"""This overrides the normal server_bind() function
2596
2412
to bind to an interface if one was specified, and also NOT to
2597
2413
bind to an address or port if they were not specified."""
2598
global SO_BINDTODEVICE
2599
2414
if self.interface is not None:
2600
2415
if SO_BINDTODEVICE is None:
2601
# Fall back to a hard-coded value which seems to be
2602
# common enough.
2603
logger.warning("SO_BINDTODEVICE not found, trying 25")
2604
SO_BINDTODEVICE = 25
2605
try:
2606
self.socket.setsockopt(
2607
socket.SOL_SOCKET, SO_BINDTODEVICE,
2608
(self.interface + "\0").encode("utf-8"))
2609
except socket.error as error:
2610
if error.errno == errno.EPERM:
2611
logger.error("No permission to bind to"
2612
" interface %s", self.interface)
2613
elif error.errno == errno.ENOPROTOOPT:
2614
logger.error("SO_BINDTODEVICE not available;"
2615
" cannot bind to interface %s",
2616
self.interface)
2617
elif error.errno == errno.ENODEV:
2618
logger.error("Interface %s does not exist,"
2619
" cannot bind", self.interface)
2620
else:
2621
raise
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
2622
2437
# Only bind(2) the socket if we really need to.
2623
2438
if self.server_address[0] or self.server_address[1]:
2624
if self.server_address[1]:
2625
self.allow_reuse_address = True
2626
2439
if not self.server_address[0]:
2627
2440
if self.address_family == socket.AF_INET6:
2628
any_address = "::" # in6addr_any
2441
any_address = "::" # in6addr_any
2629
2442
else:
2630
any_address = "0.0.0.0" # INADDR_ANY
2443
any_address = "0.0.0.0" # INADDR_ANY
2631
2444
self.server_address = (any_address,
2632
2445
self.server_address[1])
2633
2446
elif not self.server_address[1]:
2643
2456
2644
2457
class MandosServer(IPv6_TCPServer):
2645
2458
"""Mandos server.
2646
2459
2647
2460
Attributes:
2648
2461
clients: set of Client objects
2649
2462
gnutls_priority GnuTLS priority string
2650
2463
use_dbus: Boolean; to emit D-Bus signals or not
2651
2652
Assumes a GLib.MainLoop event loop.
2464
2465
Assumes a GObject.MainLoop event loop.
2653
2466
"""
2654
2467
2655
2468
def __init__(self, server_address, RequestHandlerClass,
2656
2469
interface=None,
2657
2470
use_ipv6=True,
2667
2480
self.gnutls_priority = gnutls_priority
2668
2481
IPv6_TCPServer.__init__(self, server_address,
2669
2482
RequestHandlerClass,
2670
interface=interface,
2671
use_ipv6=use_ipv6,
2672
socketfd=socketfd)
2673
2483
interface = interface,
2484
use_ipv6 = use_ipv6,
2485
socketfd = socketfd)
2486
2674
2487
def server_activate(self):
2675
2488
if self.enabled:
2676
2489
return socketserver.TCPServer.server_activate(self)
2677
2490
2678
2491
def enable(self):
2679
2492
self.enabled = True
2680
2493
2681
2494
def add_pipe(self, parent_pipe, proc):
2682
2495
# Call "handle_ipc" for both data and EOF events
2683
GLib.io_add_watch(
2684
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2685
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2496
GObject.io_add_watch(
2497
parent_pipe.fileno(),
2498
GObject.IO_IN | GObject.IO_HUP,
2686
2499
functools.partial(self.handle_ipc,
2687
parent_pipe=parent_pipe,
2688
proc=proc))
2689
2500
parent_pipe = parent_pipe,
2501
proc = proc))
2502
2690
2503
def handle_ipc(self, source, condition,
2691
2504
parent_pipe=None,
2692
proc=None,
2505
proc = None,
2693
2506
client_object=None):
2694
2507
# error, or the other end of multiprocessing.Pipe has closed
2695
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2508
if condition & (GObject.IO_ERR | GObject.IO_HUP):
2696
2509
# Wait for other process to exit
2697
2510
proc.join()
2698
2511
return False
2699
2512
2700
2513
# Read a request from the child
2701
2514
request = parent_pipe.recv()
2702
2515
command = request[0]
2703
2516
2704
2517
if command == 'init':
2705
key_id = request[1].decode("ascii")
2706
fpr = request[2].decode("ascii")
2707
address = request[3]
2708
2709
for c in self.clients.values():
2710
if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2711
continue
2712
if key_id and c.key_id == key_id:
2713
client = c
2714
break
2715
if fpr and c.fingerprint == fpr:
2518
fpr = request[1]
2519
address = request[2]
2520
2521
for c in self.clients.itervalues():
2522
if c.fingerprint == fpr:
2716
2523
client = c
2717
2524
break
2718
2525
else:
2719
logger.info("Client not found for key ID: %s, address"
2720
": %s", key_id or fpr, address)
2526
logger.info("Client not found for fingerprint: %s, ad"
2527
"dress: %s", fpr, address)
2721
2528
if self.use_dbus:
2722
2529
# Emit D-Bus signal
2723
mandos_dbus_service.ClientNotFound(key_id or fpr,
2530
mandos_dbus_service.ClientNotFound(fpr,
2724
2531
address[0])
2725
2532
parent_pipe.send(False)
2726
2533
return False
2727
2728
GLib.io_add_watch(
2729
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2730
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2534
2535
GObject.io_add_watch(
2536
parent_pipe.fileno(),
2537
GObject.IO_IN | GObject.IO_HUP,
2731
2538
functools.partial(self.handle_ipc,
2732
parent_pipe=parent_pipe,
2733
proc=proc,
2734
client_object=client))
2539
parent_pipe = parent_pipe,
2540
proc = proc,
2541
client_object = client))
2735
2542
parent_pipe.send(True)
2736
2543
# remove the old hook in favor of the new above hook on
2737
2544
# same fileno
2740
2547
funcname = request[1]
2741
2548
args = request[2]
2742
2549
kwargs = request[3]
2743
2550
2744
2551
parent_pipe.send(('data', getattr(client_object,
2745
2552
funcname)(*args,
2746
2553
**kwargs)))
2747
2554
2748
2555
if command == 'getattr':
2749
2556
attrname = request[1]
2750
2557
if isinstance(client_object.__getattribute__(attrname),
2753
2560
else:
2754
2561
parent_pipe.send((
2755
2562
'data', client_object.__getattribute__(attrname)))
2756
2563
2757
2564
if command == 'setattr':
2758
2565
attrname = request[1]
2759
2566
value = request[2]
2760
2567
setattr(client_object, attrname, value)
2761
2568
2762
2569
return True
2763
2570
2764
2571
2765
2572
def rfc3339_duration_to_delta(duration):
2766
2573
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2767
2768
>>> rfc3339_duration_to_delta("P7D") == datetime.timedelta(7)
2769
True
2770
>>> rfc3339_duration_to_delta("PT60S") == datetime.timedelta(0, 60)
2771
True
2772
>>> rfc3339_duration_to_delta("PT60M") == datetime.timedelta(0, 3600)
2773
True
2774
>>> rfc3339_duration_to_delta("PT24H") == datetime.timedelta(1)
2775
True
2776
>>> rfc3339_duration_to_delta("P1W") == datetime.timedelta(7)
2777
True
2778
>>> rfc3339_duration_to_delta("PT5M30S") == datetime.timedelta(0, 330)
2779
True
2780
>>> rfc3339_duration_to_delta("P1DT3M20S") == datetime.timedelta(1, 200)
2781
True
2574
2575
>>> rfc3339_duration_to_delta("P7D")
2576
datetime.timedelta(7)
2577
>>> rfc3339_duration_to_delta("PT60S")
2578
datetime.timedelta(0, 60)
2579
>>> rfc3339_duration_to_delta("PT60M")
2580
datetime.timedelta(0, 3600)
2581
>>> rfc3339_duration_to_delta("PT24H")
2582
datetime.timedelta(1)
2583
>>> rfc3339_duration_to_delta("P1W")
2584
datetime.timedelta(7)
2585
>>> rfc3339_duration_to_delta("PT5M30S")
2586
datetime.timedelta(0, 330)
2587
>>> rfc3339_duration_to_delta("P1DT3M20S")
2588
datetime.timedelta(1, 200)
2782
2589
"""
2783
2590
2784
2591
# Parsing an RFC 3339 duration with regular expressions is not
2785
2592
# possible - there would have to be multiple places for the same
2786
2593
# values, like seconds. The current code, while more esoteric, is
2787
2594
# cleaner without depending on a parsing library. If Python had a
2788
2595
# built-in library for parsing we would use it, but we'd like to
2789
2596
# avoid excessive use of external libraries.
2790
2597
2791
2598
# New type for defining tokens, syntax, and semantics all-in-one
2792
2599
Token = collections.namedtuple("Token", (
2793
2600
"regexp", # To match token; if "value" is not None, must have
2826
2633
frozenset((token_year, token_month,
2827
2634
token_day, token_time,
2828
2635
token_week)))
2829
# Define starting values:
2830
# Value so far
2831
value = datetime.timedelta()
2636
# Define starting values
2637
value = datetime.timedelta() # Value so far
2832
2638
found_token = None
2833
# Following valid tokens
2834
followers = frozenset((token_duration, ))
2835
# String left to parse
2836
s = duration
2639
followers = frozenset((token_duration, )) # Following valid tokens
2640
s = duration # String left to parse
2837
2641
# Loop until end token is found
2838
2642
while found_token is not token_end:
2839
2643
# Search for any currently valid tokens
2863
2667
2864
2668
def string_to_delta(interval):
2865
2669
"""Parse a string and return a datetime.timedelta
2866
2867
>>> string_to_delta('7d') == datetime.timedelta(7)
2868
True
2869
>>> string_to_delta('60s') == datetime.timedelta(0, 60)
2870
True
2871
>>> string_to_delta('60m') == datetime.timedelta(0, 3600)
2872
True
2873
>>> string_to_delta('24h') == datetime.timedelta(1)
2874
True
2875
>>> string_to_delta('1w') == datetime.timedelta(7)
2876
True
2877
>>> string_to_delta('5m 30s') == datetime.timedelta(0, 330)
2878
True
2670
2671
>>> string_to_delta('7d')
2672
datetime.timedelta(7)
2673
>>> string_to_delta('60s')
2674
datetime.timedelta(0, 60)
2675
>>> string_to_delta('60m')
2676
datetime.timedelta(0, 3600)
2677
>>> string_to_delta('24h')
2678
datetime.timedelta(1)
2679
>>> string_to_delta('1w')
2680
datetime.timedelta(7)
2681
>>> string_to_delta('5m 30s')
2682
datetime.timedelta(0, 330)
2879
2683
"""
2880
2684
2881
2685
try:
2882
2686
return rfc3339_duration_to_delta(interval)
2883
2687
except ValueError:
2884
2688
pass
2885
2689
2886
2690
timevalue = datetime.timedelta(0)
2887
2691
for s in interval.split():
2888
2692
try:
2906
2710
return timevalue
2907
2711
2908
2712
2909
def daemon(nochdir=False, noclose=False):
2713
def daemon(nochdir = False, noclose = False):
2910
2714
"""See daemon(3). Standard BSD Unix function.
2911
2715
2912
2716
This should really exist as os.daemon, but it doesn't (yet)."""
2913
2717
if os.fork():
2914
2718
sys.exit()
2932
2736
2933
2737
2934
2738
def main():
2935
2739
2936
2740
##################################################################
2937
2741
# Parsing of options, both command line and config file
2938
2742
2939
2743
parser = argparse.ArgumentParser()
2940
2744
parser.add_argument("-v", "--version", action="version",
2941
version="%(prog)s {}".format(version),
2745
version = "%(prog)s {}".format(version),
2942
2746
help="show version number and exit")
2943
2747
parser.add_argument("-i", "--interface", metavar="IF",
2944
2748
help="Bind to interface IF")
2980
2784
parser.add_argument("--no-zeroconf", action="store_false",
2981
2785
dest="zeroconf", help="Do not use Zeroconf",
2982
2786
default=None)
2983
2787
2984
2788
options = parser.parse_args()
2985
2789
2790
if options.check:
2791
import doctest
2792
fail_count, test_count = doctest.testmod()
2793
sys.exit(os.EX_OK if fail_count == 0 else 1)
2794
2986
2795
# Default values for config file for server-global settings
2987
if gnutls.has_rawpk:
2988
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
2989
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
2990
else:
2991
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2992
":+SIGN-DSA-SHA256")
2993
server_defaults = {"interface": "",
2994
"address": "",
2995
"port": "",
2996
"debug": "False",
2997
"priority": priority,
2998
"servicename": "Mandos",
2999
"use_dbus": "True",
3000
"use_ipv6": "True",
3001
"debuglevel": "",
3002
"restore": "True",
3003
"socket": "",
3004
"statedir": "/var/lib/mandos",
3005
"foreground": "False",
3006
"zeroconf": "True",
3007
}
3008
del priority
3009
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
3010
2814
# Parse config file for server-global settings
3011
server_config = configparser.ConfigParser(server_defaults)
2815
server_config = configparser.SafeConfigParser(server_defaults)
3012
2816
del server_defaults
3013
2817
server_config.read(os.path.join(options.configdir, "mandos.conf"))
3014
# Convert the ConfigParser object to a dict
2818
# Convert the SafeConfigParser object to a dict
3015
2819
server_settings = server_config.defaults()
3016
2820
# Use the appropriate methods on the non-string config options
3017
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3018
"foreground", "zeroconf"):
2821
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
3019
2822
server_settings[option] = server_config.getboolean("DEFAULT",
3020
2823
option)
3021
2824
if server_settings["port"]:
3031
2834
server_settings["socket"] = os.dup(server_settings
3032
2835
["socket"])
3033
2836
del server_config
3034
2837
3035
2838
# Override the settings from the config file with command line
3036
2839
# options, if set.
3037
2840
for option in ("interface", "address", "port", "debug",
3055
2858
if server_settings["debug"]:
3056
2859
server_settings["foreground"] = True
3057
2860
# Now we have our good server settings in "server_settings"
3058
2861
3059
2862
##################################################################
3060
2863
3061
2864
if (not server_settings["zeroconf"]
3062
2865
and not (server_settings["port"]
3063
2866
or server_settings["socket"] != "")):
3064
2867
parser.error("Needs port or socket to work without Zeroconf")
3065
2868
3066
2869
# For convenience
3067
2870
debug = server_settings["debug"]
3068
2871
debuglevel = server_settings["debuglevel"]
3072
2875
stored_state_file)
3073
2876
foreground = server_settings["foreground"]
3074
2877
zeroconf = server_settings["zeroconf"]
3075
2878
3076
2879
if debug:
3077
2880
initlogger(debug, logging.DEBUG)
3078
2881
else:
3081
2884
else:
3082
2885
level = getattr(logging, debuglevel.upper())
3083
2886
initlogger(debug, level)
3084
2887
3085
2888
if server_settings["servicename"] != "Mandos":
3086
2889
syslogger.setFormatter(
3087
2890
logging.Formatter('Mandos ({}) [%(process)d]:'
3088
2891
' %(levelname)s: %(message)s'.format(
3089
2892
server_settings["servicename"])))
3090
2893
3091
2894
# Parse config file with clients
3092
client_config = configparser.ConfigParser(Client.client_defaults)
2895
client_config = configparser.SafeConfigParser(Client
2896
.client_defaults)
3093
2897
client_config.read(os.path.join(server_settings["configdir"],
3094
2898
"clients.conf"))
3095
2899
3096
2900
global mandos_dbus_service
3097
2901
mandos_dbus_service = None
3098
2902
3099
2903
socketfd = None
3100
2904
if server_settings["socket"] != "":
3101
2905
socketfd = server_settings["socket"]
3117
2921
except IOError as e:
3118
2922
logger.error("Could not open file %r", pidfilename,
3119
2923
exc_info=e)
3120
2924
3121
2925
for name, group in (("_mandos", "_mandos"),
3122
2926
("mandos", "mandos"),
3123
2927
("nobody", "nogroup")):
3133
2937
try:
3134
2938
os.setgid(gid)
3135
2939
os.setuid(uid)
3136
if debug:
3137
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3138
gid))
3139
2940
except OSError as error:
3140
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3141
.format(uid, gid, os.strerror(error.errno)))
3142
2941
if error.errno != errno.EPERM:
3143
2942
raise
3144
2943
3145
2944
if debug:
3146
2945
# Enable all possible GnuTLS debugging
3147
2946
3148
2947
# "Use a log level over 10 to enable all debugging options."
3149
2948
# - GnuTLS manual
3150
2949
gnutls.global_set_log_level(11)
3151
2950
3152
2951
@gnutls.log_func
3153
2952
def debug_gnutls(level, string):
3154
2953
logger.debug("GnuTLS: %s", string[:-1])
3155
2954
3156
2955
gnutls.global_set_log_function(debug_gnutls)
3157
2956
3158
2957
# Redirect stdin so all checkers get /dev/null
3159
2958
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
3160
2959
os.dup2(null, sys.stdin.fileno())
3161
2960
if null > 2:
3162
2961
os.close(null)
3163
2962
3164
2963
# Need to fork before connecting to D-Bus
3165
2964
if not foreground:
3166
2965
# Close all input and output, do double fork, etc.
3167
2966
daemon()
3168
3169
if gi.version_info < (3, 10, 2):
3170
# multiprocessing will use threads, so before we use GLib we
3171
# need to inform GLib that threads will be used.
3172
GLib.threads_init()
3173
2967
2968
# multiprocessing will use threads, so before we use GObject we
2969
# need to inform GObject that threads will be used.
2970
GObject.threads_init()
2971
3174
2972
global main_loop
3175
2973
# From the Avahi example code
3176
2974
DBusGMainLoop(set_as_default=True)
3177
main_loop = GLib.MainLoop()
2975
main_loop = GObject.MainLoop()
3178
2976
bus = dbus.SystemBus()
3179
2977
# End of Avahi example code
3180
2978
if use_dbus:
3193
2991
if zeroconf:
3194
2992
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3195
2993
service = AvahiServiceToSyslog(
3196
name=server_settings["servicename"],
3197
servicetype="_mandos._tcp",
3198
protocol=protocol,
3199
bus=bus)
2994
name = server_settings["servicename"],
2995
servicetype = "_mandos._tcp",
2996
protocol = protocol,
2997
bus = bus)
3200
2998
if server_settings["interface"]:
3201
2999
service.interface = if_nametoindex(
3202
3000
server_settings["interface"].encode("utf-8"))
3203
3001
3204
3002
global multiprocessing_manager
3205
3003
multiprocessing_manager = multiprocessing.Manager()
3206
3004
3207
3005
client_class = Client
3208
3006
if use_dbus:
3209
client_class = functools.partial(ClientDBus, bus=bus)
3210
3007
client_class = functools.partial(ClientDBus, bus = bus)
3008
3211
3009
client_settings = Client.config_parser(client_config)
3212
3010
old_client_settings = {}
3213
3011
clients_data = {}
3214
3012
3215
3013
# This is used to redirect stdout and stderr for checker processes
3216
3014
global wnull
3217
wnull = open(os.devnull, "w") # A writable /dev/null
3015
wnull = open(os.devnull, "w") # A writable /dev/null
3218
3016
# Only used if server is running in foreground but not in debug
3219
3017
# mode
3220
3018
if debug or not foreground:
3221
3019
wnull.close()
3222
3020
3223
3021
# Get client data and settings from last running state.
3224
3022
if server_settings["restore"]:
3225
3023
try:
3226
3024
with open(stored_state_path, "rb") as stored_state:
3227
if sys.version_info.major == 2:
3228
clients_data, old_client_settings = pickle.load(
3229
stored_state)
3230
else:
3231
bytes_clients_data, bytes_old_client_settings = (
3232
pickle.load(stored_state, encoding="bytes"))
3233
# Fix bytes to strings
3234
# clients_data
3235
# .keys()
3236
clients_data = {(key.decode("utf-8")
3237
if isinstance(key, bytes)
3238
else key): value
3239
for key, value in
3240
bytes_clients_data.items()}
3241
del bytes_clients_data
3242
for key in clients_data:
3243
value = {(k.decode("utf-8")
3244
if isinstance(k, bytes) else k): v
3245
for k, v in
3246
clients_data[key].items()}
3247
clients_data[key] = value
3248
# .client_structure
3249
value["client_structure"] = [
3250
(s.decode("utf-8")
3251
if isinstance(s, bytes)
3252
else s) for s in
3253
value["client_structure"]]
3254
# .name, .host, and .checker_command
3255
for k in ("name", "host", "checker_command"):
3256
if isinstance(value[k], bytes):
3257
value[k] = value[k].decode("utf-8")
3258
if "key_id" not in value:
3259
value["key_id"] = ""
3260
elif "fingerprint" not in value:
3261
value["fingerprint"] = ""
3262
# old_client_settings
3263
# .keys()
3264
old_client_settings = {
3265
(key.decode("utf-8")
3266
if isinstance(key, bytes)
3267
else key): value
3268
for key, value in
3269
bytes_old_client_settings.items()}
3270
del bytes_old_client_settings
3271
# .host and .checker_command
3272
for value in old_client_settings.values():
3273
for attribute in ("host", "checker_command"):
3274
if isinstance(value[attribute], bytes):
3275
value[attribute] = (value[attribute]
3276
.decode("utf-8"))
3025
clients_data, old_client_settings = pickle.load(
3026
stored_state)
3277
3027
os.remove(stored_state_path)
3278
3028
except IOError as e:
3279
3029
if e.errno == errno.ENOENT:
3287
3037
logger.warning("Could not load persistent state: "
3288
3038
"EOFError:",
3289
3039
exc_info=e)
3290
3040
3291
3041
with PGPEngine() as pgp:
3292
3042
for client_name, client in clients_data.items():
3293
3043
# Skip removed clients
3294
3044
if client_name not in client_settings:
3295
3045
continue
3296
3046
3297
3047
# Decide which value to use after restoring saved state.
3298
3048
# We have three different values: Old config file,
3299
3049
# new config file, and saved state.
3310
3060
client[name] = value
3311
3061
except KeyError:
3312
3062
pass
3313
3063
3314
3064
# Clients who has passed its expire date can still be
3315
3065
# enabled if its last checker was successful. A Client
3316
3066
# whose checker succeeded before we stored its state is
3349
3099
client_name))
3350
3100
client["secret"] = (client_settings[client_name]
3351
3101
["secret"])
3352
3102
3353
3103
# Add/remove clients based on new changes made to config
3354
3104
for client_name in (set(old_client_settings)
3355
3105
- set(client_settings)):
3357
3107
for client_name in (set(client_settings)
3358
3108
- set(old_client_settings)):
3359
3109
clients_data[client_name] = client_settings[client_name]
3360
3110
3361
3111
# Create all client objects
3362
3112
for client_name, client in clients_data.items():
3363
3113
tcp_server.clients[client_name] = client_class(
3364
name=client_name,
3365
settings=client,
3366
server_settings=server_settings)
3367
3114
name = client_name,
3115
settings = client,
3116
server_settings = server_settings)
3117
3368
3118
if not tcp_server.clients:
3369
3119
logger.warning("No clients defined")
3370
3120
3371
3121
if not foreground:
3372
3122
if pidfile is not None:
3373
3123
pid = os.getpid()
3379
3129
pidfilename, pid)
3380
3130
del pidfile
3381
3131
del pidfilename
3382
3383
for termsig in (signal.SIGHUP, signal.SIGTERM):
3384
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3385
lambda: main_loop.quit() and False)
3386
3132
3133
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
3134
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
3135
3387
3136
if use_dbus:
3388
3137
3389
3138
@alternate_dbus_interfaces(
3390
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3139
{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
3391
3140
class MandosDBusService(DBusObjectWithObjectManager):
3392
3141
"""A D-Bus proxy object"""
3393
3142
3394
3143
def __init__(self):
3395
3144
dbus.service.Object.__init__(self, bus, "/")
3396
3145
3397
3146
_interface = "se.recompile.Mandos"
3398
3147
3399
3148
@dbus.service.signal(_interface, signature="o")
3400
3149
def ClientAdded(self, objpath):
3401
3150
"D-Bus signal"
3402
3151
pass
3403
3152
3404
3153
@dbus.service.signal(_interface, signature="ss")
3405
def ClientNotFound(self, key_id, address):
3154
def ClientNotFound(self, fingerprint, address):
3406
3155
"D-Bus signal"
3407
3156
pass
3408
3157
3409
3158
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3410
3159
"true"})
3411
3160
@dbus.service.signal(_interface, signature="os")
3412
3161
def ClientRemoved(self, objpath, name):
3413
3162
"D-Bus signal"
3414
3163
pass
3415
3164
3416
3165
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3417
3166
"true"})
3418
3167
@dbus.service.method(_interface, out_signature="ao")
3419
3168
def GetAllClients(self):
3420
3169
"D-Bus method"
3421
3170
return dbus.Array(c.dbus_object_path for c in
3422
tcp_server.clients.values())
3423
3171
tcp_server.clients.itervalues())
3172
3424
3173
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3425
3174
"true"})
3426
3175
@dbus.service.method(_interface,
3428
3177
def GetAllClientsWithProperties(self):
3429
3178
"D-Bus method"
3430
3179
return dbus.Dictionary(
3431
{c.dbus_object_path: c.GetAll(
3180
{ c.dbus_object_path: c.GetAll(
3432
3181
"se.recompile.Mandos.Client")
3433
for c in tcp_server.clients.values()},
3182
for c in tcp_server.clients.itervalues() },
3434
3183
signature="oa{sv}")
3435
3184
3436
3185
@dbus.service.method(_interface, in_signature="o")
3437
3186
def RemoveClient(self, object_path):
3438
3187
"D-Bus method"
3439
for c in tcp_server.clients.values():
3188
for c in tcp_server.clients.itervalues():
3440
3189
if c.dbus_object_path == object_path:
3441
3190
del tcp_server.clients[c.name]
3442
3191
c.remove_from_connection()
3446
3195
self.client_removed_signal(c)
3447
3196
return
3448
3197
raise KeyError(object_path)
3449
3198
3450
3199
del _interface
3451
3200
3452
3201
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3453
out_signature="a{oa{sa{sv}}}")
3202
out_signature = "a{oa{sa{sv}}}")
3454
3203
def GetManagedObjects(self):
3455
3204
"""D-Bus method"""
3456
3205
return dbus.Dictionary(
3457
{client.dbus_object_path:
3458
dbus.Dictionary(
3459
{interface: client.GetAll(interface)
3460
for interface in
3461
client._get_all_interface_names()})
3462
for client in tcp_server.clients.values()})
3463
3206
{ client.dbus_object_path:
3207
dbus.Dictionary(
3208
{ interface: client.GetAll(interface)
3209
for interface in
3210
client._get_all_interface_names()})
3211
for client in tcp_server.clients.values()})
3212
3464
3213
def client_added_signal(self, client):
3465
3214
"""Send the new standard signal and the old signal"""
3466
3215
if use_dbus:
3468
3217
self.InterfacesAdded(
3469
3218
client.dbus_object_path,
3470
3219
dbus.Dictionary(
3471
{interface: client.GetAll(interface)
3472
for interface in
3473
client._get_all_interface_names()}))
3220
{ interface: client.GetAll(interface)
3221
for interface in
3222
client._get_all_interface_names()}))
3474
3223
# Old signal
3475
3224
self.ClientAdded(client.dbus_object_path)
3476
3225
3477
3226
def client_removed_signal(self, client):
3478
3227
"""Send the new standard signal and the old signal"""
3479
3228
if use_dbus:
3484
3233
# Old signal
3485
3234
self.ClientRemoved(client.dbus_object_path,
3486
3235
client.name)
3487
3236
3488
3237
mandos_dbus_service = MandosDBusService()
3489
3490
# Save modules to variables to exempt the modules from being
3491
# unloaded before the function registered with atexit() is run.
3492
mp = multiprocessing
3493
wn = wnull
3494
3238
3495
3239
def cleanup():
3496
3240
"Cleanup function; run on exit"
3497
3241
if zeroconf:
3498
3242
service.cleanup()
3499
3500
mp.active_children()
3501
wn.close()
3243
3244
multiprocessing.active_children()
3245
wnull.close()
3502
3246
if not (tcp_server.clients or client_settings):
3503
3247
return
3504
3248
3505
3249
# Store client before exiting. Secrets are encrypted with key
3506
3250
# based on what config file has. If config file is
3507
3251
# removed/edited, old secret will thus be unrecovable.
3508
3252
clients = {}
3509
3253
with PGPEngine() as pgp:
3510
for client in tcp_server.clients.values():
3254
for client in tcp_server.clients.itervalues():
3511
3255
key = client_settings[client.name]["secret"]
3512
3256
client.encrypted_secret = pgp.encrypt(client.secret,
3513
3257
key)
3514
3258
client_dict = {}
3515
3259
3516
3260
# A list of attributes that can not be pickled
3517
3261
# + secret.
3518
exclude = {"bus", "changedstate", "secret",
3519
"checker", "server_settings"}
3262
exclude = { "bus", "changedstate", "secret",
3263
"checker", "server_settings" }
3520
3264
for name, typ in inspect.getmembers(dbus.service
3521
3265
.Object):
3522
3266
exclude.add(name)
3523
3267
3524
3268
client_dict["encrypted_secret"] = (client
3525
3269
.encrypted_secret)
3526
3270
for attr in client.client_structure:
3527
3271
if attr not in exclude:
3528
3272
client_dict[attr] = getattr(client, attr)
3529
3273
3530
3274
clients[client.name] = client_dict
3531
3275
del client_settings[client.name]["secret"]
3532
3276
3533
3277
try:
3534
3278
with tempfile.NamedTemporaryFile(
3535
3279
mode='wb',
3537
3281
prefix='clients-',
3538
3282
dir=os.path.dirname(stored_state_path),
3539
3283
delete=False) as stored_state:
3540
pickle.dump((clients, client_settings), stored_state,
3541
protocol=2)
3284
pickle.dump((clients, client_settings), stored_state)
3542
3285
tempname = stored_state.name
3543
3286
os.rename(tempname, stored_state_path)
3544
3287
except (IOError, OSError) as e:
3554
3297
logger.warning("Could not save persistent state:",
3555
3298
exc_info=e)
3556
3299
raise
3557
3300
3558
3301
# Delete all clients, and settings from config
3559
3302
while tcp_server.clients:
3560
3303
name, client = tcp_server.clients.popitem()
3566
3309
if use_dbus:
3567
3310
mandos_dbus_service.client_removed_signal(client)
3568
3311
client_settings.clear()
3569
3312
3570
3313
atexit.register(cleanup)
3571
3572
for client in tcp_server.clients.values():
3314
3315
for client in tcp_server.clients.itervalues():
3573
3316
if use_dbus:
3574
3317
# Emit D-Bus signal for adding
3575
3318
mandos_dbus_service.client_added_signal(client)
3576
3319
# Need to initiate checking of clients
3577
3320
if client.enabled:
3578
3321
client.init_checker()
3579
3322
3580
3323
tcp_server.enable()
3581
3324
tcp_server.server_activate()
3582
3325
3583
3326
# Find out what port we got
3584
3327
if zeroconf:
3585
3328
service.port = tcp_server.socket.getsockname()[1]
3590
3333
else: # IPv4
3591
3334
logger.info("Now listening on address %r, port %d",
3592
3335
*tcp_server.socket.getsockname())
3593
3594
# service.interface = tcp_server.socket.getsockname()[3]
3595
3336
3337
#service.interface = tcp_server.socket.getsockname()[3]
3338
3596
3339
try:
3597
3340
if zeroconf:
3598
3341
# From the Avahi example code
3603
3346
cleanup()
3604
3347
sys.exit(1)
3605
3348
# End of Avahi example code
3606
3607
GLib.io_add_watch(
3608
GLib.IOChannel.unix_new(tcp_server.fileno()),
3609
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
3610
lambda *args, **kwargs: (tcp_server.handle_request
3611
(*args[2:], **kwargs) or True))
3612
3349
3350
GObject.io_add_watch(tcp_server.fileno(), GObject.IO_IN,
3351
lambda *args, **kwargs:
3352
(tcp_server.handle_request
3353
(*args[2:], **kwargs) or True))
3354
3613
3355
logger.debug("Starting main loop")
3614
3356
main_loop.run()
3615
3357
except AvahiError as error:
3624
3366
# Must run before the D-Bus bus name gets deregistered
3625
3367
cleanup()
3626
3368
3627
3628
def should_only_run_tests():
3629
parser = argparse.ArgumentParser(add_help=False)
3630
parser.add_argument("--check", action='store_true')
3631
args, unknown_args = parser.parse_known_args()
3632
run_tests = args.check
3633
if run_tests:
3634
# Remove --check argument from sys.argv
3635
sys.argv[1:] = unknown_args
3636
return run_tests
3637
3638
# Add all tests from doctest strings
3639
def load_tests(loader, tests, none):
3640
import doctest
3641
tests.addTests(doctest.DocTestSuite())
3642
return tests
3643
3369
3644
3370
if __name__ == '__main__':
3645
try:
3646
if should_only_run_tests():
3647
# Call using ./mandos --check [--verbose]
3648
unittest.main()
3649
else:
3650
main()
3651
finally:
3652
logging.shutdown()
3371
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0