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- Committer: Teddy Hogeborn
- Date: 2021-02-03 08:33:43 UTC
- Revision ID: teddy@recompile.se-20210203083343-spdbhxgd5v8e3lv9
Update copyright year
* debian/copyright: Update copyright year to 2021.
* dracut-module/password-agent.c: - '' -
* dracut-module/password-agent.xml: Update copyright year to 2020.
* intro.xml: - '' -
* plugin-helpers/mandos-client-iprouteadddel.c: Update copyright year
to 2021.
* plugin-runner.c: - '' -
* plugins.d/askpass-fifo.c: - '' -
* plugins.d/mandos-client.c: - '' -
* plugins.d/password-prompt.c: - '' -
* plugins.d/plymouth.c: - '' -
* plugins.d/splashy.c: - '' -
* plugins.d/usplash.c: - '' -
* debian/copyright: Update copyright year to 2021.
* dracut-module/password-agent.c: - '' -
* dracut-module/password-agent.xml: Update copyright year to 2020.
* intro.xml: - '' -
* plugin-helpers/mandos-client-iprouteadddel.c: Update copyright year
to 2021.
* plugin-runner.c: - '' -
* plugins.d/askpass-fifo.c: - '' -
* plugins.d/mandos-client.c: - '' -
* plugins.d/password-prompt.c: - '' -
* plugins.d/plymouth.c: - '' -
* plugins.d/splashy.c: - '' -
* plugins.d/usplash.c: - '' -
- files added:
- bugs.xml
- debian/tests
- dracut-module
- files removed:
- initramfs-tools-hook-conf
- files modified:
- .bzrignore
added
removed
mandos
1
#!/usr/bin/python2.7
2
# -*- mode: python; coding: utf-8 -*-
3
#
1
#!/usr/bin/python3 -bI
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
#
4
4
# Mandos server - give out binary blobs to connecting clients.
5
#
5
#
6
6
# This program is partly derived from an example program for an Avahi
7
7
# service publisher, downloaded from
8
8
# <http://avahi.org/wiki/PythonPublishExample>. This includes the
9
9
# methods "add", "remove", "server_state_changed",
10
10
# "entry_group_state_changed", "cleanup", and "activate" in the
11
11
# "AvahiService" class, and some lines in "main".
12
#
12
#
13
13
# Everything else is
14
# Copyright © 2008-2015 Teddy Hogeborn
15
# Copyright © 2008-2015 Björn Påhlsson
16
#
17
# This program is free software: you can redistribute it and/or modify
18
# it under the terms of the GNU General Public License as published by
14
# Copyright © 2008-2020 Teddy Hogeborn
15
# Copyright © 2008-2020 Björn Påhlsson
16
#
17
# This file is part of Mandos.
18
#
19
# Mandos is free software: you can redistribute it and/or modify it
20
# under the terms of the GNU General Public License as published by
19
21
# the Free Software Foundation, either version 3 of the License, or
20
22
# (at your option) any later version.
21
23
#
22
# This program is distributed in the hope that it will be useful,
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
24
# Mandos is distributed in the hope that it will be useful, but
25
# WITHOUT ANY WARRANTY; without even the implied warranty of
24
26
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25
27
# GNU General Public License for more details.
26
#
28
#
27
29
# You should have received a copy of the GNU General Public License
28
# along with this program. If not, see
29
# <http://www.gnu.org/licenses/>.
30
#
30
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
31
#
31
32
# Contact the authors at <mandos@recompile.se>.
32
#
33
#
33
34
34
35
from __future__ import (division, absolute_import, print_function,
35
36
unicode_literals)
36
37
37
from future_builtins import *
38
try:
39
from future_builtins import *
40
except ImportError:
41
pass
38
42
39
43
try:
40
44
import SocketServer as socketserver
44
48
import argparse
45
49
import datetime
46
50
import errno
47
import gnutls.crypto
48
import gnutls.connection
49
import gnutls.errors
50
import gnutls.library.functions
51
import gnutls.library.constants
52
import gnutls.library.types
53
51
try:
54
52
import ConfigParser as configparser
55
53
except ImportError:
79
77
import itertools
80
78
import collections
81
79
import codecs
80
import unittest
81
import random
82
import shlex
82
83
83
84
import dbus
84
85
import dbus.service
85
try:
86
import gobject
87
except ImportError:
88
from gi.repository import GObject as gobject
89
import avahi
86
import gi
87
from gi.repository import GLib
90
88
from dbus.mainloop.glib import DBusGMainLoop
91
89
import ctypes
92
90
import ctypes.util
93
91
import xml.dom.minidom
94
92
import inspect
95
93
96
try:
94
if sys.version_info.major == 2:
95
__metaclass__ = type
96
str = unicode
97
98
# Add collections.abc.Callable if it does not exist
99
try:
100
collections.abc.Callable
101
except AttributeError:
102
class abc:
103
Callable = collections.Callable
104
collections.abc = abc
105
del abc
106
107
# Add shlex.quote if it does not exist
108
try:
109
shlex.quote
110
except AttributeError:
111
shlex.quote = re.escape
112
113
# Show warnings by default
114
if not sys.warnoptions:
115
import warnings
116
warnings.simplefilter("default")
117
118
# Try to find the value of SO_BINDTODEVICE:
119
try:
120
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
121
# newer, and it is also the most natural place for it:
97
122
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
98
123
except AttributeError:
99
124
try:
125
# This is where SO_BINDTODEVICE was up to and including Python
126
# 2.6, and also 3.2:
100
127
from IN import SO_BINDTODEVICE
101
128
except ImportError:
102
SO_BINDTODEVICE = None
103
104
if sys.version_info.major == 2:
105
str = unicode
106
107
version = "1.6.9"
129
# In Python 2.7 it seems to have been removed entirely.
130
# Try running the C preprocessor:
131
try:
132
cc = subprocess.Popen(["cc", "--language=c", "-E",
133
"/dev/stdin"],
134
stdin=subprocess.PIPE,
135
stdout=subprocess.PIPE)
136
stdout = cc.communicate(
137
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
138
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
139
except (OSError, ValueError, IndexError):
140
# No value found
141
SO_BINDTODEVICE = None
142
143
if sys.version_info < (3, 2):
144
configparser.Configparser = configparser.SafeConfigParser
145
146
version = "1.8.13"
108
147
stored_state_file = "clients.pickle"
109
148
110
149
logger = logging.getLogger()
150
logging.captureWarnings(True) # Show warnings via the logging system
111
151
syslogger = None
112
152
113
153
try:
114
154
if_nametoindex = ctypes.cdll.LoadLibrary(
115
155
ctypes.util.find_library("c")).if_nametoindex
116
156
except (OSError, AttributeError):
117
157
118
158
def if_nametoindex(interface):
119
159
"Get an interface index the hard way, i.e. using fcntl()"
120
160
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
125
165
return interface_index
126
166
127
167
168
def copy_function(func):
169
"""Make a copy of a function"""
170
if sys.version_info.major == 2:
171
return types.FunctionType(func.func_code,
172
func.func_globals,
173
func.func_name,
174
func.func_defaults,
175
func.func_closure)
176
else:
177
return types.FunctionType(func.__code__,
178
func.__globals__,
179
func.__name__,
180
func.__defaults__,
181
func.__closure__)
182
183
128
184
def initlogger(debug, level=logging.WARNING):
129
185
"""init logger and add loglevel"""
130
186
131
187
global syslogger
132
188
syslogger = (logging.handlers.SysLogHandler(
133
facility = logging.handlers.SysLogHandler.LOG_DAEMON,
134
address = "/dev/log"))
189
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
190
address="/dev/log"))
135
191
syslogger.setFormatter(logging.Formatter
136
192
('Mandos [%(process)d]: %(levelname)s:'
137
193
' %(message)s'))
138
194
logger.addHandler(syslogger)
139
195
140
196
if debug:
141
197
console = logging.StreamHandler()
142
198
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
152
208
pass
153
209
154
210
155
class PGPEngine(object):
211
class PGPEngine:
156
212
"""A simple class for OpenPGP symmetric encryption & decryption"""
157
213
158
214
def __init__(self):
159
215
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
216
self.gpg = "gpg"
217
try:
218
output = subprocess.check_output(["gpgconf"])
219
for line in output.splitlines():
220
name, text, path = line.split(b":")
221
if name == b"gpg":
222
self.gpg = path
223
break
224
except OSError as e:
225
if e.errno != errno.ENOENT:
226
raise
160
227
self.gnupgargs = ['--batch',
161
'--home', self.tempdir,
228
'--homedir', self.tempdir,
162
229
'--force-mdc',
163
'--quiet',
164
'--no-use-agent']
165
230
'--quiet']
231
# Only GPG version 1 has the --no-use-agent option.
232
if self.gpg == b"gpg" or self.gpg.endswith(b"/gpg"):
233
self.gnupgargs.append("--no-use-agent")
234
166
235
def __enter__(self):
167
236
return self
168
237
169
238
def __exit__(self, exc_type, exc_value, traceback):
170
239
self._cleanup()
171
240
return False
172
241
173
242
def __del__(self):
174
243
self._cleanup()
175
244
176
245
def _cleanup(self):
177
246
if self.tempdir is not None:
178
247
# Delete contents of tempdir
179
248
for root, dirs, files in os.walk(self.tempdir,
180
topdown = False):
249
topdown=False):
181
250
for filename in files:
182
251
os.remove(os.path.join(root, filename))
183
252
for dirname in dirs:
185
254
# Remove tempdir
186
255
os.rmdir(self.tempdir)
187
256
self.tempdir = None
188
257
189
258
def password_encode(self, password):
190
259
# Passphrase can not be empty and can not contain newlines or
191
260
# NUL bytes. So we prefix it and hex encode it.
196
265
.replace(b"\n", b"\\n")
197
266
.replace(b"\0", b"\\x00"))
198
267
return encoded
199
268
200
269
def encrypt(self, data, password):
201
270
passphrase = self.password_encode(password)
202
271
with tempfile.NamedTemporaryFile(
203
272
dir=self.tempdir) as passfile:
204
273
passfile.write(passphrase)
205
274
passfile.flush()
206
proc = subprocess.Popen(['gpg', '--symmetric',
275
proc = subprocess.Popen([self.gpg, '--symmetric',
207
276
'--passphrase-file',
208
277
passfile.name]
209
278
+ self.gnupgargs,
210
stdin = subprocess.PIPE,
211
stdout = subprocess.PIPE,
212
stderr = subprocess.PIPE)
213
ciphertext, err = proc.communicate(input = data)
279
stdin=subprocess.PIPE,
280
stdout=subprocess.PIPE,
281
stderr=subprocess.PIPE)
282
ciphertext, err = proc.communicate(input=data)
214
283
if proc.returncode != 0:
215
284
raise PGPError(err)
216
285
return ciphertext
217
286
218
287
def decrypt(self, data, password):
219
288
passphrase = self.password_encode(password)
220
289
with tempfile.NamedTemporaryFile(
221
dir = self.tempdir) as passfile:
290
dir=self.tempdir) as passfile:
222
291
passfile.write(passphrase)
223
292
passfile.flush()
224
proc = subprocess.Popen(['gpg', '--decrypt',
293
proc = subprocess.Popen([self.gpg, '--decrypt',
225
294
'--passphrase-file',
226
295
passfile.name]
227
296
+ self.gnupgargs,
228
stdin = subprocess.PIPE,
229
stdout = subprocess.PIPE,
230
stderr = subprocess.PIPE)
231
decrypted_plaintext, err = proc.communicate(input = data)
297
stdin=subprocess.PIPE,
298
stdout=subprocess.PIPE,
299
stderr=subprocess.PIPE)
300
decrypted_plaintext, err = proc.communicate(input=data)
232
301
if proc.returncode != 0:
233
302
raise PGPError(err)
234
303
return decrypted_plaintext
235
304
236
305
306
# Pretend that we have an Avahi module
307
class avahi:
308
"""This isn't so much a class as it is a module-like namespace."""
309
IF_UNSPEC = -1 # avahi-common/address.h
310
PROTO_UNSPEC = -1 # avahi-common/address.h
311
PROTO_INET = 0 # avahi-common/address.h
312
PROTO_INET6 = 1 # avahi-common/address.h
313
DBUS_NAME = "org.freedesktop.Avahi"
314
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
315
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
316
DBUS_PATH_SERVER = "/"
317
318
@staticmethod
319
def string_array_to_txt_array(t):
320
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
321
for s in t), signature="ay")
322
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
323
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
324
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
325
SERVER_INVALID = 0 # avahi-common/defs.h
326
SERVER_REGISTERING = 1 # avahi-common/defs.h
327
SERVER_RUNNING = 2 # avahi-common/defs.h
328
SERVER_COLLISION = 3 # avahi-common/defs.h
329
SERVER_FAILURE = 4 # avahi-common/defs.h
330
331
237
332
class AvahiError(Exception):
238
333
def __init__(self, value, *args, **kwargs):
239
334
self.value = value
249
344
pass
250
345
251
346
252
class AvahiService(object):
347
class AvahiService:
253
348
"""An Avahi (Zeroconf) service.
254
349
255
350
Attributes:
256
351
interface: integer; avahi.IF_UNSPEC or an interface index.
257
352
Used to optionally bind to the specified interface.
269
364
server: D-Bus Server
270
365
bus: dbus.SystemBus()
271
366
"""
272
367
273
368
def __init__(self,
274
interface = avahi.IF_UNSPEC,
275
name = None,
276
servicetype = None,
277
port = None,
278
TXT = None,
279
domain = "",
280
host = "",
281
max_renames = 32768,
282
protocol = avahi.PROTO_UNSPEC,
283
bus = None):
369
interface=avahi.IF_UNSPEC,
370
name=None,
371
servicetype=None,
372
port=None,
373
TXT=None,
374
domain="",
375
host="",
376
max_renames=32768,
377
protocol=avahi.PROTO_UNSPEC,
378
bus=None):
284
379
self.interface = interface
285
380
self.name = name
286
381
self.type = servicetype
295
390
self.server = None
296
391
self.bus = bus
297
392
self.entry_group_state_changed_match = None
298
393
299
394
def rename(self, remove=True):
300
395
"""Derived from the Avahi example code"""
301
396
if self.rename_count >= self.max_renames:
321
416
logger.critical("D-Bus Exception", exc_info=error)
322
417
self.cleanup()
323
418
os._exit(1)
324
419
325
420
def remove(self):
326
421
"""Derived from the Avahi example code"""
327
422
if self.entry_group_state_changed_match is not None:
329
424
self.entry_group_state_changed_match = None
330
425
if self.group is not None:
331
426
self.group.Reset()
332
427
333
428
def add(self):
334
429
"""Derived from the Avahi example code"""
335
430
self.remove()
352
447
dbus.UInt16(self.port),
353
448
avahi.string_array_to_txt_array(self.TXT))
354
449
self.group.Commit()
355
450
356
451
def entry_group_state_changed(self, state, error):
357
452
"""Derived from the Avahi example code"""
358
453
logger.debug("Avahi entry group state change: %i", state)
359
454
360
455
if state == avahi.ENTRY_GROUP_ESTABLISHED:
361
456
logger.debug("Zeroconf service established.")
362
457
elif state == avahi.ENTRY_GROUP_COLLISION:
366
461
logger.critical("Avahi: Error in group state changed %s",
367
462
str(error))
368
463
raise AvahiGroupError("State changed: {!s}".format(error))
369
464
370
465
def cleanup(self):
371
466
"""Derived from the Avahi example code"""
372
467
if self.group is not None:
377
472
pass
378
473
self.group = None
379
474
self.remove()
380
475
381
476
def server_state_changed(self, state, error=None):
382
477
"""Derived from the Avahi example code"""
383
478
logger.debug("Avahi server state change: %i", state)
412
507
logger.debug("Unknown state: %r", state)
413
508
else:
414
509
logger.debug("Unknown state: %r: %r", state, error)
415
510
416
511
def activate(self):
417
512
"""Derived from the Avahi example code"""
418
513
if self.server is None:
429
524
class AvahiServiceToSyslog(AvahiService):
430
525
def rename(self, *args, **kwargs):
431
526
"""Add the new name to the syslog messages"""
432
ret = AvahiService.rename(self, *args, **kwargs)
527
ret = super(AvahiServiceToSyslog, self).rename(*args,
528
**kwargs)
433
529
syslogger.setFormatter(logging.Formatter(
434
530
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
435
531
.format(self.name)))
436
532
return ret
437
533
534
535
# Pretend that we have a GnuTLS module
536
class gnutls:
537
"""This isn't so much a class as it is a module-like namespace."""
538
539
library = ctypes.util.find_library("gnutls")
540
if library is None:
541
library = ctypes.util.find_library("gnutls-deb0")
542
_library = ctypes.cdll.LoadLibrary(library)
543
del library
544
545
# Unless otherwise indicated, the constants and types below are
546
# all from the gnutls/gnutls.h C header file.
547
548
# Constants
549
E_SUCCESS = 0
550
E_INTERRUPTED = -52
551
E_AGAIN = -28
552
CRT_OPENPGP = 2
553
CRT_RAWPK = 3
554
CLIENT = 2
555
SHUT_RDWR = 0
556
CRD_CERTIFICATE = 1
557
E_NO_CERTIFICATE_FOUND = -49
558
X509_FMT_DER = 0
559
NO_TICKETS = 1<<10
560
ENABLE_RAWPK = 1<<18
561
CTYPE_PEERS = 3
562
KEYID_USE_SHA256 = 1 # gnutls/x509.h
563
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
564
565
# Types
566
class session_int(ctypes.Structure):
567
_fields_ = []
568
session_t = ctypes.POINTER(session_int)
569
570
class certificate_credentials_st(ctypes.Structure):
571
_fields_ = []
572
certificate_credentials_t = ctypes.POINTER(
573
certificate_credentials_st)
574
certificate_type_t = ctypes.c_int
575
576
class datum_t(ctypes.Structure):
577
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
578
('size', ctypes.c_uint)]
579
580
class openpgp_crt_int(ctypes.Structure):
581
_fields_ = []
582
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
583
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
584
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
585
credentials_type_t = ctypes.c_int
586
transport_ptr_t = ctypes.c_void_p
587
close_request_t = ctypes.c_int
588
589
# Exceptions
590
class Error(Exception):
591
def __init__(self, message=None, code=None, args=()):
592
# Default usage is by a message string, but if a return
593
# code is passed, convert it to a string with
594
# gnutls.strerror()
595
self.code = code
596
if message is None and code is not None:
597
message = gnutls.strerror(code)
598
return super(gnutls.Error, self).__init__(
599
message, *args)
600
601
class CertificateSecurityError(Error):
602
pass
603
604
# Classes
605
class Credentials:
606
def __init__(self):
607
self._c_object = gnutls.certificate_credentials_t()
608
gnutls.certificate_allocate_credentials(
609
ctypes.byref(self._c_object))
610
self.type = gnutls.CRD_CERTIFICATE
611
612
def __del__(self):
613
gnutls.certificate_free_credentials(self._c_object)
614
615
class ClientSession:
616
def __init__(self, socket, credentials=None):
617
self._c_object = gnutls.session_t()
618
gnutls_flags = gnutls.CLIENT
619
if gnutls.check_version(b"3.5.6"):
620
gnutls_flags |= gnutls.NO_TICKETS
621
if gnutls.has_rawpk:
622
gnutls_flags |= gnutls.ENABLE_RAWPK
623
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
624
del gnutls_flags
625
gnutls.set_default_priority(self._c_object)
626
gnutls.transport_set_ptr(self._c_object, socket.fileno())
627
gnutls.handshake_set_private_extensions(self._c_object,
628
True)
629
self.socket = socket
630
if credentials is None:
631
credentials = gnutls.Credentials()
632
gnutls.credentials_set(self._c_object, credentials.type,
633
ctypes.cast(credentials._c_object,
634
ctypes.c_void_p))
635
self.credentials = credentials
636
637
def __del__(self):
638
gnutls.deinit(self._c_object)
639
640
def handshake(self):
641
return gnutls.handshake(self._c_object)
642
643
def send(self, data):
644
data = bytes(data)
645
data_len = len(data)
646
while data_len > 0:
647
data_len -= gnutls.record_send(self._c_object,
648
data[-data_len:],
649
data_len)
650
651
def bye(self):
652
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
653
654
# Error handling functions
655
def _error_code(result):
656
"""A function to raise exceptions on errors, suitable
657
for the 'restype' attribute on ctypes functions"""
658
if result >= 0:
659
return result
660
if result == gnutls.E_NO_CERTIFICATE_FOUND:
661
raise gnutls.CertificateSecurityError(code=result)
662
raise gnutls.Error(code=result)
663
664
def _retry_on_error(result, func, arguments):
665
"""A function to retry on some errors, suitable
666
for the 'errcheck' attribute on ctypes functions"""
667
while result < 0:
668
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
669
return _error_code(result)
670
result = func(*arguments)
671
return result
672
673
# Unless otherwise indicated, the function declarations below are
674
# all from the gnutls/gnutls.h C header file.
675
676
# Functions
677
priority_set_direct = _library.gnutls_priority_set_direct
678
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
679
ctypes.POINTER(ctypes.c_char_p)]
680
priority_set_direct.restype = _error_code
681
682
init = _library.gnutls_init
683
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
684
init.restype = _error_code
685
686
set_default_priority = _library.gnutls_set_default_priority
687
set_default_priority.argtypes = [session_t]
688
set_default_priority.restype = _error_code
689
690
record_send = _library.gnutls_record_send
691
record_send.argtypes = [session_t, ctypes.c_void_p,
692
ctypes.c_size_t]
693
record_send.restype = ctypes.c_ssize_t
694
record_send.errcheck = _retry_on_error
695
696
certificate_allocate_credentials = (
697
_library.gnutls_certificate_allocate_credentials)
698
certificate_allocate_credentials.argtypes = [
699
ctypes.POINTER(certificate_credentials_t)]
700
certificate_allocate_credentials.restype = _error_code
701
702
certificate_free_credentials = (
703
_library.gnutls_certificate_free_credentials)
704
certificate_free_credentials.argtypes = [
705
certificate_credentials_t]
706
certificate_free_credentials.restype = None
707
708
handshake_set_private_extensions = (
709
_library.gnutls_handshake_set_private_extensions)
710
handshake_set_private_extensions.argtypes = [session_t,
711
ctypes.c_int]
712
handshake_set_private_extensions.restype = None
713
714
credentials_set = _library.gnutls_credentials_set
715
credentials_set.argtypes = [session_t, credentials_type_t,
716
ctypes.c_void_p]
717
credentials_set.restype = _error_code
718
719
strerror = _library.gnutls_strerror
720
strerror.argtypes = [ctypes.c_int]
721
strerror.restype = ctypes.c_char_p
722
723
certificate_type_get = _library.gnutls_certificate_type_get
724
certificate_type_get.argtypes = [session_t]
725
certificate_type_get.restype = _error_code
726
727
certificate_get_peers = _library.gnutls_certificate_get_peers
728
certificate_get_peers.argtypes = [session_t,
729
ctypes.POINTER(ctypes.c_uint)]
730
certificate_get_peers.restype = ctypes.POINTER(datum_t)
731
732
global_set_log_level = _library.gnutls_global_set_log_level
733
global_set_log_level.argtypes = [ctypes.c_int]
734
global_set_log_level.restype = None
735
736
global_set_log_function = _library.gnutls_global_set_log_function
737
global_set_log_function.argtypes = [log_func]
738
global_set_log_function.restype = None
739
740
deinit = _library.gnutls_deinit
741
deinit.argtypes = [session_t]
742
deinit.restype = None
743
744
handshake = _library.gnutls_handshake
745
handshake.argtypes = [session_t]
746
handshake.restype = _error_code
747
handshake.errcheck = _retry_on_error
748
749
transport_set_ptr = _library.gnutls_transport_set_ptr
750
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
751
transport_set_ptr.restype = None
752
753
bye = _library.gnutls_bye
754
bye.argtypes = [session_t, close_request_t]
755
bye.restype = _error_code
756
bye.errcheck = _retry_on_error
757
758
check_version = _library.gnutls_check_version
759
check_version.argtypes = [ctypes.c_char_p]
760
check_version.restype = ctypes.c_char_p
761
762
_need_version = b"3.3.0"
763
if check_version(_need_version) is None:
764
raise self.Error("Needs GnuTLS {} or later"
765
.format(_need_version))
766
767
_tls_rawpk_version = b"3.6.6"
768
has_rawpk = bool(check_version(_tls_rawpk_version))
769
770
if has_rawpk:
771
# Types
772
class pubkey_st(ctypes.Structure):
773
_fields = []
774
pubkey_t = ctypes.POINTER(pubkey_st)
775
776
x509_crt_fmt_t = ctypes.c_int
777
778
# All the function declarations below are from
779
# gnutls/abstract.h
780
pubkey_init = _library.gnutls_pubkey_init
781
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
782
pubkey_init.restype = _error_code
783
784
pubkey_import = _library.gnutls_pubkey_import
785
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
786
x509_crt_fmt_t]
787
pubkey_import.restype = _error_code
788
789
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
790
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
791
ctypes.POINTER(ctypes.c_ubyte),
792
ctypes.POINTER(ctypes.c_size_t)]
793
pubkey_get_key_id.restype = _error_code
794
795
pubkey_deinit = _library.gnutls_pubkey_deinit
796
pubkey_deinit.argtypes = [pubkey_t]
797
pubkey_deinit.restype = None
798
else:
799
# All the function declarations below are from
800
# gnutls/openpgp.h
801
802
openpgp_crt_init = _library.gnutls_openpgp_crt_init
803
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
804
openpgp_crt_init.restype = _error_code
805
806
openpgp_crt_import = _library.gnutls_openpgp_crt_import
807
openpgp_crt_import.argtypes = [openpgp_crt_t,
808
ctypes.POINTER(datum_t),
809
openpgp_crt_fmt_t]
810
openpgp_crt_import.restype = _error_code
811
812
openpgp_crt_verify_self = \
813
_library.gnutls_openpgp_crt_verify_self
814
openpgp_crt_verify_self.argtypes = [
815
openpgp_crt_t,
816
ctypes.c_uint,
817
ctypes.POINTER(ctypes.c_uint),
818
]
819
openpgp_crt_verify_self.restype = _error_code
820
821
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
822
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
823
openpgp_crt_deinit.restype = None
824
825
openpgp_crt_get_fingerprint = (
826
_library.gnutls_openpgp_crt_get_fingerprint)
827
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
828
ctypes.c_void_p,
829
ctypes.POINTER(
830
ctypes.c_size_t)]
831
openpgp_crt_get_fingerprint.restype = _error_code
832
833
if check_version(b"3.6.4"):
834
certificate_type_get2 = _library.gnutls_certificate_type_get2
835
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
836
certificate_type_get2.restype = _error_code
837
838
# Remove non-public functions
839
del _error_code, _retry_on_error
840
841
438
842
def call_pipe(connection, # : multiprocessing.Connection
439
843
func, *args, **kwargs):
440
844
"""This function is meant to be called by multiprocessing.Process
441
845
442
846
This function runs func(*args, **kwargs), and writes the resulting
443
847
return value on the provided multiprocessing.Connection.
444
848
"""
445
849
connection.send(func(*args, **kwargs))
446
850
connection.close()
447
851
448
class Client(object):
852
853
class Client:
449
854
"""A representation of a client host served by this server.
450
855
451
856
Attributes:
452
857
approved: bool(); 'None' if not yet approved/disapproved
453
858
approval_delay: datetime.timedelta(); Time to wait for approval
454
859
approval_duration: datetime.timedelta(); Duration of one approval
455
checker: subprocess.Popen(); a running checker process used
456
to see if the client lives.
457
'None' if no process is running.
458
checker_callback_tag: a gobject event source tag, or None
860
checker: multiprocessing.Process(); a running checker process used
861
to see if the client lives. 'None' if no process is
862
running.
863
checker_callback_tag: a GLib event source tag, or None
459
864
checker_command: string; External command which is run to check
460
865
if client lives. %() expansions are done at
461
866
runtime with vars(self) as dict, so that for
462
867
instance %(name)s can be used in the command.
463
checker_initiator_tag: a gobject event source tag, or None
868
checker_initiator_tag: a GLib event source tag, or None
464
869
created: datetime.datetime(); (UTC) object creation
465
870
client_structure: Object describing what attributes a client has
466
871
and is used for storing the client at exit
467
872
current_checker_command: string; current running checker_command
468
disable_initiator_tag: a gobject event source tag, or None
873
disable_initiator_tag: a GLib event source tag, or None
469
874
enabled: bool()
470
875
fingerprint: string (40 or 32 hexadecimal digits); used to
471
uniquely identify the client
876
uniquely identify an OpenPGP client
877
key_id: string (64 hexadecimal digits); used to uniquely identify
878
a client using raw public keys
472
879
host: string; available for use by the checker command
473
880
interval: datetime.timedelta(); How often to start a new checker
474
881
last_approval_request: datetime.datetime(); (UTC) or None
490
897
disabled, or None
491
898
server_settings: The server_settings dict from main()
492
899
"""
493
900
494
901
runtime_expansions = ("approval_delay", "approval_duration",
495
"created", "enabled", "expires",
902
"created", "enabled", "expires", "key_id",
496
903
"fingerprint", "host", "interval",
497
904
"last_approval_request", "last_checked_ok",
498
905
"last_enabled", "name", "timeout")
507
914
"approved_by_default": "True",
508
915
"enabled": "True",
509
916
}
510
917
511
918
@staticmethod
512
919
def config_parser(config):
513
920
"""Construct a new dict of client settings of this form:
520
927
for client_name in config.sections():
521
928
section = dict(config.items(client_name))
522
929
client = settings[client_name] = {}
523
930
524
931
client["host"] = section["host"]
525
932
# Reformat values from string types to Python types
526
933
client["approved_by_default"] = config.getboolean(
527
934
client_name, "approved_by_default")
528
935
client["enabled"] = config.getboolean(client_name,
529
936
"enabled")
530
531
# Uppercase and remove spaces from fingerprint for later
532
# comparison purposes with return value from the
533
# fingerprint() function
937
938
# Uppercase and remove spaces from key_id and fingerprint
939
# for later comparison purposes with return value from the
940
# key_id() and fingerprint() functions
941
client["key_id"] = (section.get("key_id", "").upper()
942
.replace(" ", ""))
534
943
client["fingerprint"] = (section["fingerprint"].upper()
535
944
.replace(" ", ""))
536
945
if "secret" in section:
537
client["secret"] = section["secret"].decode("base64")
946
client["secret"] = codecs.decode(section["secret"]
947
.encode("utf-8"),
948
"base64")
538
949
elif "secfile" in section:
539
950
with open(os.path.expanduser(os.path.expandvars
540
951
(section["secfile"])),
555
966
client["last_approval_request"] = None
556
967
client["last_checked_ok"] = None
557
968
client["last_checker_status"] = -2
558
969
559
970
return settings
560
561
def __init__(self, settings, name = None, server_settings=None):
971
972
def __init__(self, settings, name=None, server_settings=None):
562
973
self.name = name
563
974
if server_settings is None:
564
975
server_settings = {}
566
977
# adding all client settings
567
978
for setting, value in settings.items():
568
979
setattr(self, setting, value)
569
980
570
981
if self.enabled:
571
982
if not hasattr(self, "last_enabled"):
572
983
self.last_enabled = datetime.datetime.utcnow()
576
987
else:
577
988
self.last_enabled = None
578
989
self.expires = None
579
990
580
991
logger.debug("Creating client %r", self.name)
992
logger.debug(" Key ID: %s", self.key_id)
581
993
logger.debug(" Fingerprint: %s", self.fingerprint)
582
994
self.created = settings.get("created",
583
995
datetime.datetime.utcnow())
584
996
585
997
# attributes specific for this server instance
586
998
self.checker = None
587
999
self.checker_initiator_tag = None
593
1005
self.changedstate = multiprocessing_manager.Condition(
594
1006
multiprocessing_manager.Lock())
595
1007
self.client_structure = [attr
596
for attr in self.__dict__.iterkeys()
1008
for attr in self.__dict__.keys()
597
1009
if not attr.startswith("_")]
598
1010
self.client_structure.append("client_structure")
599
1011
600
1012
for name, t in inspect.getmembers(
601
1013
type(self), lambda obj: isinstance(obj, property)):
602
1014
if not name.startswith("_"):
603
1015
self.client_structure.append(name)
604
1016
605
1017
# Send notice to process children that client state has changed
606
1018
def send_changedstate(self):
607
1019
with self.changedstate:
608
1020
self.changedstate.notify_all()
609
1021
610
1022
def enable(self):
611
1023
"""Start this client's checker and timeout hooks"""
612
1024
if getattr(self, "enabled", False):
617
1029
self.last_enabled = datetime.datetime.utcnow()
618
1030
self.init_checker()
619
1031
self.send_changedstate()
620
1032
621
1033
def disable(self, quiet=True):
622
1034
"""Disable this client."""
623
1035
if not getattr(self, "enabled", False):
625
1037
if not quiet:
626
1038
logger.info("Disabling client %s", self.name)
627
1039
if getattr(self, "disable_initiator_tag", None) is not None:
628
gobject.source_remove(self.disable_initiator_tag)
1040
GLib.source_remove(self.disable_initiator_tag)
629
1041
self.disable_initiator_tag = None
630
1042
self.expires = None
631
1043
if getattr(self, "checker_initiator_tag", None) is not None:
632
gobject.source_remove(self.checker_initiator_tag)
1044
GLib.source_remove(self.checker_initiator_tag)
633
1045
self.checker_initiator_tag = None
634
1046
self.stop_checker()
635
1047
self.enabled = False
636
1048
if not quiet:
637
1049
self.send_changedstate()
638
# Do not run this again if called by a gobject.timeout_add
1050
# Do not run this again if called by a GLib.timeout_add
639
1051
return False
640
1052
641
1053
def __del__(self):
642
1054
self.disable()
643
1055
644
1056
def init_checker(self):
645
1057
# Schedule a new checker to be started an 'interval' from now,
646
1058
# and every interval from then on.
647
1059
if self.checker_initiator_tag is not None:
648
gobject.source_remove(self.checker_initiator_tag)
649
self.checker_initiator_tag = gobject.timeout_add(
650
int(self.interval.total_seconds() * 1000),
1060
GLib.source_remove(self.checker_initiator_tag)
1061
self.checker_initiator_tag = GLib.timeout_add(
1062
random.randrange(int(self.interval.total_seconds() * 1000
1063
+ 1)),
651
1064
self.start_checker)
652
1065
# Schedule a disable() when 'timeout' has passed
653
1066
if self.disable_initiator_tag is not None:
654
gobject.source_remove(self.disable_initiator_tag)
655
self.disable_initiator_tag = gobject.timeout_add(
1067
GLib.source_remove(self.disable_initiator_tag)
1068
self.disable_initiator_tag = GLib.timeout_add(
656
1069
int(self.timeout.total_seconds() * 1000), self.disable)
657
1070
# Also start a new checker *right now*.
658
1071
self.start_checker()
659
1072
660
1073
def checker_callback(self, source, condition, connection,
661
1074
command):
662
1075
"""The checker has completed, so take appropriate actions."""
663
self.checker_callback_tag = None
664
self.checker = None
665
1076
# Read return code from connection (see call_pipe)
666
1077
returncode = connection.recv()
667
1078
connection.close()
668
1079
if self.checker is not None:
1080
self.checker.join()
1081
self.checker_callback_tag = None
1082
self.checker = None
1083
669
1084
if returncode >= 0:
670
1085
self.last_checker_status = returncode
671
1086
self.last_checker_signal = None
681
1096
logger.warning("Checker for %(name)s crashed?",
682
1097
vars(self))
683
1098
return False
684
1099
685
1100
def checked_ok(self):
686
1101
"""Assert that the client has been seen, alive and well."""
687
1102
self.last_checked_ok = datetime.datetime.utcnow()
688
1103
self.last_checker_status = 0
689
1104
self.last_checker_signal = None
690
1105
self.bump_timeout()
691
1106
692
1107
def bump_timeout(self, timeout=None):
693
1108
"""Bump up the timeout for this client."""
694
1109
if timeout is None:
695
1110
timeout = self.timeout
696
1111
if self.disable_initiator_tag is not None:
697
gobject.source_remove(self.disable_initiator_tag)
1112
GLib.source_remove(self.disable_initiator_tag)
698
1113
self.disable_initiator_tag = None
699
1114
if getattr(self, "enabled", False):
700
self.disable_initiator_tag = gobject.timeout_add(
1115
self.disable_initiator_tag = GLib.timeout_add(
701
1116
int(timeout.total_seconds() * 1000), self.disable)
702
1117
self.expires = datetime.datetime.utcnow() + timeout
703
1118
704
1119
def need_approval(self):
705
1120
self.last_approval_request = datetime.datetime.utcnow()
706
1121
707
1122
def start_checker(self):
708
1123
"""Start a new checker subprocess if one is not running.
709
1124
710
1125
If a checker already exists, leave it running and do
711
1126
nothing."""
712
1127
# The reason for not killing a running checker is that if we
717
1132
# checkers alone, the checker would have to take more time
718
1133
# than 'timeout' for the client to be disabled, which is as it
719
1134
# should be.
720
1135
721
1136
if self.checker is not None and not self.checker.is_alive():
722
1137
logger.warning("Checker was not alive; joining")
723
1138
self.checker.join()
726
1141
if self.checker is None:
727
1142
# Escape attributes for the shell
728
1143
escaped_attrs = {
729
attr: re.escape(str(getattr(self, attr)))
730
for attr in self.runtime_expansions }
1144
attr: shlex.quote(str(getattr(self, attr)))
1145
for attr in self.runtime_expansions}
731
1146
try:
732
1147
command = self.checker_command % escaped_attrs
733
1148
except TypeError as error:
745
1160
# The exception is when not debugging but nevertheless
746
1161
# running in the foreground; use the previously
747
1162
# created wnull.
748
popen_args = { "close_fds": True,
749
"shell": True,
750
"cwd": "/" }
1163
popen_args = {"close_fds": True,
1164
"shell": True,
1165
"cwd": "/"}
751
1166
if (not self.server_settings["debug"]
752
1167
and self.server_settings["foreground"]):
753
1168
popen_args.update({"stdout": wnull,
754
"stderr": wnull })
755
pipe = multiprocessing.Pipe(duplex = False)
1169
"stderr": wnull})
1170
pipe = multiprocessing.Pipe(duplex=False)
756
1171
self.checker = multiprocessing.Process(
757
target = call_pipe,
758
args = (pipe[1], subprocess.call, command),
759
kwargs = popen_args)
1172
target=call_pipe,
1173
args=(pipe[1], subprocess.call, command),
1174
kwargs=popen_args)
760
1175
self.checker.start()
761
self.checker_callback_tag = gobject.io_add_watch(
762
pipe[0].fileno(), gobject.IO_IN,
1176
self.checker_callback_tag = GLib.io_add_watch(
1177
GLib.IOChannel.unix_new(pipe[0].fileno()),
1178
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
763
1179
self.checker_callback, pipe[0], command)
764
# Re-run this periodically if run by gobject.timeout_add
1180
# Re-run this periodically if run by GLib.timeout_add
765
1181
return True
766
1182
767
1183
def stop_checker(self):
768
1184
"""Force the checker process, if any, to stop."""
769
1185
if self.checker_callback_tag:
770
gobject.source_remove(self.checker_callback_tag)
1186
GLib.source_remove(self.checker_callback_tag)
771
1187
self.checker_callback_tag = None
772
1188
if getattr(self, "checker", None) is None:
773
1189
return
782
1198
byte_arrays=False):
783
1199
"""Decorators for marking methods of a DBusObjectWithProperties to
784
1200
become properties on the D-Bus.
785
1201
786
1202
The decorated method will be called with no arguments by "Get"
787
1203
and with one argument by "Set".
788
1204
789
1205
The parameters, where they are supported, are the same as
790
1206
dbus.service.method, except there is only "signature", since the
791
1207
type from Get() and the type sent to Set() is the same.
795
1211
if byte_arrays and signature != "ay":
796
1212
raise ValueError("Byte arrays not supported for non-'ay'"
797
1213
" signature {!r}".format(signature))
798
1214
799
1215
def decorator(func):
800
1216
func._dbus_is_property = True
801
1217
func._dbus_interface = dbus_interface
804
1220
func._dbus_name = func.__name__
805
1221
if func._dbus_name.endswith("_dbus_property"):
806
1222
func._dbus_name = func._dbus_name[:-14]
807
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
1223
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
808
1224
return func
809
1225
810
1226
return decorator
811
1227
812
1228
813
1229
def dbus_interface_annotations(dbus_interface):
814
1230
"""Decorator for marking functions returning interface annotations
815
1231
816
1232
Usage:
817
1233
818
1234
@dbus_interface_annotations("org.example.Interface")
819
1235
def _foo(self): # Function name does not matter
820
1236
return {"org.freedesktop.DBus.Deprecated": "true",
821
1237
"org.freedesktop.DBus.Property.EmitsChangedSignal":
822
1238
"false"}
823
1239
"""
824
1240
825
1241
def decorator(func):
826
1242
func._dbus_is_interface = True
827
1243
func._dbus_interface = dbus_interface
828
1244
func._dbus_name = dbus_interface
829
1245
return func
830
1246
831
1247
return decorator
832
1248
833
1249
834
1250
def dbus_annotations(annotations):
835
1251
"""Decorator to annotate D-Bus methods, signals or properties
836
1252
Usage:
837
1253
838
1254
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
839
1255
"org.freedesktop.DBus.Property."
840
1256
"EmitsChangedSignal": "false"})
842
1258
access="r")
843
1259
def Property_dbus_property(self):
844
1260
return dbus.Boolean(False)
1261
1262
See also the DBusObjectWithAnnotations class.
845
1263
"""
846
1264
847
1265
def decorator(func):
848
1266
func._dbus_annotations = annotations
849
1267
return func
850
1268
851
1269
return decorator
852
1270
853
1271
869
1287
pass
870
1288
871
1289
872
class DBusObjectWithProperties(dbus.service.Object):
873
"""A D-Bus object with properties.
874
875
Classes inheriting from this can use the dbus_service_property
876
decorator to expose methods as D-Bus properties. It exposes the
877
standard Get(), Set(), and GetAll() methods on the D-Bus.
1290
class DBusObjectWithAnnotations(dbus.service.Object):
1291
"""A D-Bus object with annotations.
1292
1293
Classes inheriting from this can use the dbus_annotations
1294
decorator to add annotations to methods or signals.
878
1295
"""
879
1296
880
1297
@staticmethod
881
1298
def _is_dbus_thing(thing):
882
1299
"""Returns a function testing if an attribute is a D-Bus thing
883
1300
884
1301
If called like _is_dbus_thing("method") it returns a function
885
1302
suitable for use as predicate to inspect.getmembers().
886
1303
"""
887
1304
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
888
1305
False)
889
1306
890
1307
def _get_all_dbus_things(self, thing):
891
1308
"""Returns a generator of (name, attribute) pairs
892
1309
"""
895
1312
for cls in self.__class__.__mro__
896
1313
for name, athing in
897
1314
inspect.getmembers(cls, self._is_dbus_thing(thing)))
898
1315
1316
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1317
out_signature="s",
1318
path_keyword='object_path',
1319
connection_keyword='connection')
1320
def Introspect(self, object_path, connection):
1321
"""Overloading of standard D-Bus method.
1322
1323
Inserts annotation tags on methods and signals.
1324
"""
1325
xmlstring = dbus.service.Object.Introspect(self, object_path,
1326
connection)
1327
try:
1328
document = xml.dom.minidom.parseString(xmlstring)
1329
1330
for if_tag in document.getElementsByTagName("interface"):
1331
# Add annotation tags
1332
for typ in ("method", "signal"):
1333
for tag in if_tag.getElementsByTagName(typ):
1334
annots = dict()
1335
for name, prop in (self.
1336
_get_all_dbus_things(typ)):
1337
if (name == tag.getAttribute("name")
1338
and prop._dbus_interface
1339
== if_tag.getAttribute("name")):
1340
annots.update(getattr(
1341
prop, "_dbus_annotations", {}))
1342
for name, value in annots.items():
1343
ann_tag = document.createElement(
1344
"annotation")
1345
ann_tag.setAttribute("name", name)
1346
ann_tag.setAttribute("value", value)
1347
tag.appendChild(ann_tag)
1348
# Add interface annotation tags
1349
for annotation, value in dict(
1350
itertools.chain.from_iterable(
1351
annotations().items()
1352
for name, annotations
1353
in self._get_all_dbus_things("interface")
1354
if name == if_tag.getAttribute("name")
1355
)).items():
1356
ann_tag = document.createElement("annotation")
1357
ann_tag.setAttribute("name", annotation)
1358
ann_tag.setAttribute("value", value)
1359
if_tag.appendChild(ann_tag)
1360
# Fix argument name for the Introspect method itself
1361
if (if_tag.getAttribute("name")
1362
== dbus.INTROSPECTABLE_IFACE):
1363
for cn in if_tag.getElementsByTagName("method"):
1364
if cn.getAttribute("name") == "Introspect":
1365
for arg in cn.getElementsByTagName("arg"):
1366
if (arg.getAttribute("direction")
1367
== "out"):
1368
arg.setAttribute("name",
1369
"xml_data")
1370
xmlstring = document.toxml("utf-8")
1371
document.unlink()
1372
except (AttributeError, xml.dom.DOMException,
1373
xml.parsers.expat.ExpatError) as error:
1374
logger.error("Failed to override Introspection method",
1375
exc_info=error)
1376
return xmlstring
1377
1378
1379
class DBusObjectWithProperties(DBusObjectWithAnnotations):
1380
"""A D-Bus object with properties.
1381
1382
Classes inheriting from this can use the dbus_service_property
1383
decorator to expose methods as D-Bus properties. It exposes the
1384
standard Get(), Set(), and GetAll() methods on the D-Bus.
1385
"""
1386
899
1387
def _get_dbus_property(self, interface_name, property_name):
900
1388
"""Returns a bound method if one exists which is a D-Bus
901
1389
property with the specified name and interface.
906
1394
if (value._dbus_name == property_name
907
1395
and value._dbus_interface == interface_name):
908
1396
return value.__get__(self)
909
1397
910
1398
# No such property
911
1399
raise DBusPropertyNotFound("{}:{}.{}".format(
912
1400
self.dbus_object_path, interface_name, property_name))
913
1401
1402
@classmethod
1403
def _get_all_interface_names(cls):
1404
"""Get a sequence of all interfaces supported by an object"""
1405
return (name for name in set(getattr(getattr(x, attr),
1406
"_dbus_interface", None)
1407
for x in (inspect.getmro(cls))
1408
for attr in dir(x))
1409
if name is not None)
1410
914
1411
@dbus.service.method(dbus.PROPERTIES_IFACE,
915
1412
in_signature="ss",
916
1413
out_signature="v")
924
1421
if not hasattr(value, "variant_level"):
925
1422
return value
926
1423
return type(value)(value, variant_level=value.variant_level+1)
927
1424
928
1425
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
929
1426
def Set(self, interface_name, property_name, value):
930
1427
"""Standard D-Bus property Set() method, see D-Bus standard.
939
1436
raise ValueError("Byte arrays not supported for non-"
940
1437
"'ay' signature {!r}"
941
1438
.format(prop._dbus_signature))
942
value = dbus.ByteArray(b''.join(chr(byte)
943
for byte in value))
1439
value = dbus.ByteArray(bytes(value))
944
1440
prop(value)
945
1441
946
1442
@dbus.service.method(dbus.PROPERTIES_IFACE,
947
1443
in_signature="s",
948
1444
out_signature="a{sv}")
949
1445
def GetAll(self, interface_name):
950
1446
"""Standard D-Bus property GetAll() method, see D-Bus
951
1447
standard.
952
1448
953
1449
Note: Will not include properties with access="write".
954
1450
"""
955
1451
properties = {}
966
1462
properties[name] = value
967
1463
continue
968
1464
properties[name] = type(value)(
969
value, variant_level = value.variant_level + 1)
1465
value, variant_level=value.variant_level + 1)
970
1466
return dbus.Dictionary(properties, signature="sv")
971
1467
972
1468
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
973
1469
def PropertiesChanged(self, interface_name, changed_properties,
974
1470
invalidated_properties):
976
1472
standard.
977
1473
"""
978
1474
pass
979
1475
980
1476
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
981
1477
out_signature="s",
982
1478
path_keyword='object_path',
983
1479
connection_keyword='connection')
984
1480
def Introspect(self, object_path, connection):
985
1481
"""Overloading of standard D-Bus method.
986
1482
987
1483
Inserts property tags and interface annotation tags.
988
1484
"""
989
xmlstring = dbus.service.Object.Introspect(self, object_path,
990
connection)
1485
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1486
object_path,
1487
connection)
991
1488
try:
992
1489
document = xml.dom.minidom.parseString(xmlstring)
993
1490
994
1491
def make_tag(document, name, prop):
995
1492
e = document.createElement("property")
996
1493
e.setAttribute("name", name)
997
1494
e.setAttribute("type", prop._dbus_signature)
998
1495
e.setAttribute("access", prop._dbus_access)
999
1496
return e
1000
1497
1001
1498
for if_tag in document.getElementsByTagName("interface"):
1002
1499
# Add property tags
1003
1500
for tag in (make_tag(document, name, prop)
1006
1503
if prop._dbus_interface
1007
1504
== if_tag.getAttribute("name")):
1008
1505
if_tag.appendChild(tag)
1009
# Add annotation tags
1010
for typ in ("method", "signal", "property"):
1011
for tag in if_tag.getElementsByTagName(typ):
1012
annots = dict()
1013
for name, prop in (self.
1014
_get_all_dbus_things(typ)):
1015
if (name == tag.getAttribute("name")
1016
and prop._dbus_interface
1017
== if_tag.getAttribute("name")):
1018
annots.update(getattr(
1019
prop, "_dbus_annotations", {}))
1020
for name, value in annots.items():
1021
ann_tag = document.createElement(
1022
"annotation")
1023
ann_tag.setAttribute("name", name)
1024
ann_tag.setAttribute("value", value)
1025
tag.appendChild(ann_tag)
1026
# Add interface annotation tags
1027
for annotation, value in dict(
1028
itertools.chain.from_iterable(
1029
annotations().items()
1030
for name, annotations
1031
in self._get_all_dbus_things("interface")
1032
if name == if_tag.getAttribute("name")
1033
)).items():
1034
ann_tag = document.createElement("annotation")
1035
ann_tag.setAttribute("name", annotation)
1036
ann_tag.setAttribute("value", value)
1037
if_tag.appendChild(ann_tag)
1506
# Add annotation tags for properties
1507
for tag in if_tag.getElementsByTagName("property"):
1508
annots = dict()
1509
for name, prop in self._get_all_dbus_things(
1510
"property"):
1511
if (name == tag.getAttribute("name")
1512
and prop._dbus_interface
1513
== if_tag.getAttribute("name")):
1514
annots.update(getattr(
1515
prop, "_dbus_annotations", {}))
1516
for name, value in annots.items():
1517
ann_tag = document.createElement(
1518
"annotation")
1519
ann_tag.setAttribute("name", name)
1520
ann_tag.setAttribute("value", value)
1521
tag.appendChild(ann_tag)
1038
1522
# Add the names to the return values for the
1039
1523
# "org.freedesktop.DBus.Properties" methods
1040
1524
if (if_tag.getAttribute("name")
1059
1543
return xmlstring
1060
1544
1061
1545
1546
try:
1547
dbus.OBJECT_MANAGER_IFACE
1548
except AttributeError:
1549
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1550
1551
1552
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1553
"""A D-Bus object with an ObjectManager.
1554
1555
Classes inheriting from this exposes the standard
1556
GetManagedObjects call and the InterfacesAdded and
1557
InterfacesRemoved signals on the standard
1558
"org.freedesktop.DBus.ObjectManager" interface.
1559
1560
Note: No signals are sent automatically; they must be sent
1561
manually.
1562
"""
1563
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1564
out_signature="a{oa{sa{sv}}}")
1565
def GetManagedObjects(self):
1566
"""This function must be overridden"""
1567
raise NotImplementedError()
1568
1569
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1570
signature="oa{sa{sv}}")
1571
def InterfacesAdded(self, object_path, interfaces_and_properties):
1572
pass
1573
1574
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1575
def InterfacesRemoved(self, object_path, interfaces):
1576
pass
1577
1578
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1579
out_signature="s",
1580
path_keyword='object_path',
1581
connection_keyword='connection')
1582
def Introspect(self, object_path, connection):
1583
"""Overloading of standard D-Bus method.
1584
1585
Override return argument name of GetManagedObjects to be
1586
"objpath_interfaces_and_properties"
1587
"""
1588
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1589
object_path,
1590
connection)
1591
try:
1592
document = xml.dom.minidom.parseString(xmlstring)
1593
1594
for if_tag in document.getElementsByTagName("interface"):
1595
# Fix argument name for the GetManagedObjects method
1596
if (if_tag.getAttribute("name")
1597
== dbus.OBJECT_MANAGER_IFACE):
1598
for cn in if_tag.getElementsByTagName("method"):
1599
if (cn.getAttribute("name")
1600
== "GetManagedObjects"):
1601
for arg in cn.getElementsByTagName("arg"):
1602
if (arg.getAttribute("direction")
1603
== "out"):
1604
arg.setAttribute(
1605
"name",
1606
"objpath_interfaces"
1607
"_and_properties")
1608
xmlstring = document.toxml("utf-8")
1609
document.unlink()
1610
except (AttributeError, xml.dom.DOMException,
1611
xml.parsers.expat.ExpatError) as error:
1612
logger.error("Failed to override Introspection method",
1613
exc_info=error)
1614
return xmlstring
1615
1616
1062
1617
def datetime_to_dbus(dt, variant_level=0):
1063
1618
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1064
1619
if dt is None:
1065
return dbus.String("", variant_level = variant_level)
1620
return dbus.String("", variant_level=variant_level)
1066
1621
return dbus.String(dt.isoformat(), variant_level=variant_level)
1067
1622
1068
1623
1071
1626
dbus.service.Object, it will add alternate D-Bus attributes with
1072
1627
interface names according to the "alt_interface_names" mapping.
1073
1628
Usage:
1074
1629
1075
1630
@alternate_dbus_interfaces({"org.example.Interface":
1076
1631
"net.example.AlternateInterface"})
1077
1632
class SampleDBusObject(dbus.service.Object):
1078
1633
@dbus.service.method("org.example.Interface")
1079
1634
def SampleDBusMethod():
1080
1635
pass
1081
1636
1082
1637
The above "SampleDBusMethod" on "SampleDBusObject" will be
1083
1638
reachable via two interfaces: "org.example.Interface" and
1084
1639
"net.example.AlternateInterface", the latter of which will have
1085
1640
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1086
1641
"true", unless "deprecate" is passed with a False value.
1087
1642
1088
1643
This works for methods and signals, and also for D-Bus properties
1089
1644
(from DBusObjectWithProperties) and interfaces (from the
1090
1645
dbus_interface_annotations decorator).
1091
1646
"""
1092
1647
1093
1648
def wrapper(cls):
1094
1649
for orig_interface_name, alt_interface_name in (
1095
1650
alt_interface_names.items()):
1110
1665
interface_names.add(alt_interface)
1111
1666
# Is this a D-Bus signal?
1112
1667
if getattr(attribute, "_dbus_is_signal", False):
1668
# Extract the original non-method undecorated
1669
# function by black magic
1113
1670
if sys.version_info.major == 2:
1114
# Extract the original non-method undecorated
1115
# function by black magic
1116
1671
nonmethod_func = (dict(
1117
1672
zip(attribute.func_code.co_freevars,
1118
1673
attribute.__closure__))
1119
1674
["func"].cell_contents)
1120
1675
else:
1121
nonmethod_func = attribute
1676
nonmethod_func = (dict(
1677
zip(attribute.__code__.co_freevars,
1678
attribute.__closure__))
1679
["func"].cell_contents)
1122
1680
# Create a new, but exactly alike, function
1123
1681
# object, and decorate it to be a new D-Bus signal
1124
1682
# with the alternate D-Bus interface name
1125
if sys.version_info.major == 2:
1126
new_function = types.FunctionType(
1127
nonmethod_func.func_code,
1128
nonmethod_func.func_globals,
1129
nonmethod_func.func_name,
1130
nonmethod_func.func_defaults,
1131
nonmethod_func.func_closure)
1132
else:
1133
new_function = types.FunctionType(
1134
nonmethod_func.__code__,
1135
nonmethod_func.__globals__,
1136
nonmethod_func.__name__,
1137
nonmethod_func.__defaults__,
1138
nonmethod_func.__closure__)
1683
new_function = copy_function(nonmethod_func)
1139
1684
new_function = (dbus.service.signal(
1140
1685
alt_interface,
1141
1686
attribute._dbus_signature)(new_function))
1145
1690
attribute._dbus_annotations)
1146
1691
except AttributeError:
1147
1692
pass
1693
1148
1694
# Define a creator of a function to call both the
1149
1695
# original and alternate functions, so both the
1150
1696
# original and alternate signals gets sent when
1153
1699
"""This function is a scope container to pass
1154
1700
func1 and func2 to the "call_both" function
1155
1701
outside of its arguments"""
1156
1702
1703
@functools.wraps(func2)
1157
1704
def call_both(*args, **kwargs):
1158
1705
"""This function will emit two D-Bus
1159
1706
signals by calling func1 and func2"""
1160
1707
func1(*args, **kwargs)
1161
1708
func2(*args, **kwargs)
1162
1709
# Make wrapper function look like a D-Bus
1710
# signal
1711
for name, attr in inspect.getmembers(func2):
1712
if name.startswith("_dbus_"):
1713
setattr(call_both, name, attr)
1714
1163
1715
return call_both
1164
1716
# Create the "call_both" function and add it to
1165
1717
# the class
1175
1727
alt_interface,
1176
1728
attribute._dbus_in_signature,
1177
1729
attribute._dbus_out_signature)
1178
(types.FunctionType(attribute.func_code,
1179
attribute.func_globals,
1180
attribute.func_name,
1181
attribute.func_defaults,
1182
attribute.func_closure)))
1730
(copy_function(attribute)))
1183
1731
# Copy annotations, if any
1184
1732
try:
1185
1733
attr[attrname]._dbus_annotations = dict(
1197
1745
attribute._dbus_access,
1198
1746
attribute._dbus_get_args_options
1199
1747
["byte_arrays"])
1200
(types.FunctionType(
1201
attribute.func_code,
1202
attribute.func_globals,
1203
attribute.func_name,
1204
attribute.func_defaults,
1205
attribute.func_closure)))
1748
(copy_function(attribute)))
1206
1749
# Copy annotations, if any
1207
1750
try:
1208
1751
attr[attrname]._dbus_annotations = dict(
1217
1760
# to the class.
1218
1761
attr[attrname] = (
1219
1762
dbus_interface_annotations(alt_interface)
1220
(types.FunctionType(attribute.func_code,
1221
attribute.func_globals,
1222
attribute.func_name,
1223
attribute.func_defaults,
1224
attribute.func_closure)))
1763
(copy_function(attribute)))
1225
1764
if deprecate:
1226
1765
# Deprecate all alternate interfaces
1227
iname="_AlternateDBusNames_interface_annotation{}"
1766
iname = "_AlternateDBusNames_interface_annotation{}"
1228
1767
for interface_name in interface_names:
1229
1768
1230
1769
@dbus_interface_annotations(interface_name)
1231
1770
def func(self):
1232
return { "org.freedesktop.DBus.Deprecated":
1233
"true" }
1771
return {"org.freedesktop.DBus.Deprecated":
1772
"true"}
1234
1773
# Find an unused name
1235
1774
for aname in (iname.format(i)
1236
1775
for i in itertools.count()):
1240
1779
if interface_names:
1241
1780
# Replace the class with a new subclass of it with
1242
1781
# methods, signals, etc. as created above.
1243
cls = type(b"{}Alternate".format(cls.__name__),
1244
(cls, ), attr)
1782
if sys.version_info.major == 2:
1783
cls = type(b"{}Alternate".format(cls.__name__),
1784
(cls, ), attr)
1785
else:
1786
cls = type("{}Alternate".format(cls.__name__),
1787
(cls, ), attr)
1245
1788
return cls
1246
1789
1247
1790
return wrapper
1248
1791
1249
1792
1251
1794
"se.bsnet.fukt.Mandos"})
1252
1795
class ClientDBus(Client, DBusObjectWithProperties):
1253
1796
"""A Client class using D-Bus
1254
1797
1255
1798
Attributes:
1256
1799
dbus_object_path: dbus.ObjectPath
1257
1800
bus: dbus.SystemBus()
1258
1801
"""
1259
1802
1260
1803
runtime_expansions = (Client.runtime_expansions
1261
1804
+ ("dbus_object_path", ))
1262
1805
1263
1806
_interface = "se.recompile.Mandos.Client"
1264
1807
1265
1808
# dbus.service.Object doesn't use super(), so we can't either.
1266
1267
def __init__(self, bus = None, *args, **kwargs):
1809
1810
def __init__(self, bus=None, *args, **kwargs):
1268
1811
self.bus = bus
1269
1812
Client.__init__(self, *args, **kwargs)
1270
1813
# Only now, when this client is initialized, can it show up on
1276
1819
"/clients/" + client_object_name)
1277
1820
DBusObjectWithProperties.__init__(self, self.bus,
1278
1821
self.dbus_object_path)
1279
1822
1280
1823
def notifychangeproperty(transform_func, dbus_name,
1281
1824
type_func=lambda x: x,
1282
1825
variant_level=1,
1284
1827
_interface=_interface):
1285
1828
""" Modify a variable so that it's a property which announces
1286
1829
its changes to DBus.
1287
1830
1288
1831
transform_fun: Function that takes a value and a variant_level
1289
1832
and transforms it to a D-Bus type.
1290
1833
dbus_name: D-Bus name of the variable
1293
1836
variant_level: D-Bus variant level. Default: 1
1294
1837
"""
1295
1838
attrname = "_{}".format(dbus_name)
1296
1839
1297
1840
def setter(self, value):
1298
1841
if hasattr(self, "dbus_object_path"):
1299
1842
if (not hasattr(self, attrname) or
1306
1849
else:
1307
1850
dbus_value = transform_func(
1308
1851
type_func(value),
1309
variant_level = variant_level)
1852
variant_level=variant_level)
1310
1853
self.PropertyChanged(dbus.String(dbus_name),
1311
1854
dbus_value)
1312
1855
self.PropertiesChanged(
1313
1856
_interface,
1314
dbus.Dictionary({ dbus.String(dbus_name):
1315
dbus_value }),
1857
dbus.Dictionary({dbus.String(dbus_name):
1858
dbus_value}),
1316
1859
dbus.Array())
1317
1860
setattr(self, attrname, value)
1318
1861
1319
1862
return property(lambda self: getattr(self, attrname), setter)
1320
1863
1321
1864
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1322
1865
approvals_pending = notifychangeproperty(dbus.Boolean,
1323
1866
"ApprovalPending",
1324
type_func = bool)
1867
type_func=bool)
1325
1868
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1326
1869
last_enabled = notifychangeproperty(datetime_to_dbus,
1327
1870
"LastEnabled")
1328
1871
checker = notifychangeproperty(
1329
1872
dbus.Boolean, "CheckerRunning",
1330
type_func = lambda checker: checker is not None)
1873
type_func=lambda checker: checker is not None)
1331
1874
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1332
1875
"LastCheckedOK")
1333
1876
last_checker_status = notifychangeproperty(dbus.Int16,
1338
1881
"ApprovedByDefault")
1339
1882
approval_delay = notifychangeproperty(
1340
1883
dbus.UInt64, "ApprovalDelay",
1341
type_func = lambda td: td.total_seconds() * 1000)
1884
type_func=lambda td: td.total_seconds() * 1000)
1342
1885
approval_duration = notifychangeproperty(
1343
1886
dbus.UInt64, "ApprovalDuration",
1344
type_func = lambda td: td.total_seconds() * 1000)
1887
type_func=lambda td: td.total_seconds() * 1000)
1345
1888
host = notifychangeproperty(dbus.String, "Host")
1346
1889
timeout = notifychangeproperty(
1347
1890
dbus.UInt64, "Timeout",
1348
type_func = lambda td: td.total_seconds() * 1000)
1891
type_func=lambda td: td.total_seconds() * 1000)
1349
1892
extended_timeout = notifychangeproperty(
1350
1893
dbus.UInt64, "ExtendedTimeout",
1351
type_func = lambda td: td.total_seconds() * 1000)
1894
type_func=lambda td: td.total_seconds() * 1000)
1352
1895
interval = notifychangeproperty(
1353
1896
dbus.UInt64, "Interval",
1354
type_func = lambda td: td.total_seconds() * 1000)
1897
type_func=lambda td: td.total_seconds() * 1000)
1355
1898
checker_command = notifychangeproperty(dbus.String, "Checker")
1356
1899
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1357
1900
invalidate_only=True)
1358
1901
1359
1902
del notifychangeproperty
1360
1903
1361
1904
def __del__(self, *args, **kwargs):
1362
1905
try:
1363
1906
self.remove_from_connection()
1366
1909
if hasattr(DBusObjectWithProperties, "__del__"):
1367
1910
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1368
1911
Client.__del__(self, *args, **kwargs)
1369
1912
1370
1913
def checker_callback(self, source, condition,
1371
1914
connection, command, *args, **kwargs):
1372
1915
ret = Client.checker_callback(self, source, condition,
1376
1919
if exitstatus >= 0:
1377
1920
# Emit D-Bus signal
1378
1921
self.CheckerCompleted(dbus.Int16(exitstatus),
1379
dbus.Int64(0),
1922
# This is specific to GNU libC
1923
dbus.Int64(exitstatus << 8),
1380
1924
dbus.String(command))
1381
1925
else:
1382
1926
# Emit D-Bus signal
1383
1927
self.CheckerCompleted(dbus.Int16(-1),
1384
1928
dbus.Int64(
1385
self.last_checker_signal),
1929
# This is specific to GNU libC
1930
(exitstatus << 8)
1931
| self.last_checker_signal),
1386
1932
dbus.String(command))
1387
1933
return ret
1388
1934
1389
1935
def start_checker(self, *args, **kwargs):
1390
1936
old_checker_pid = getattr(self.checker, "pid", None)
1391
1937
r = Client.start_checker(self, *args, **kwargs)
1395
1941
# Emit D-Bus signal
1396
1942
self.CheckerStarted(self.current_checker_command)
1397
1943
return r
1398
1944
1399
1945
def _reset_approved(self):
1400
1946
self.approved = None
1401
1947
return False
1402
1948
1403
1949
def approve(self, value=True):
1404
1950
self.approved = value
1405
gobject.timeout_add(int(self.approval_duration.total_seconds()
1406
* 1000), self._reset_approved)
1951
GLib.timeout_add(int(self.approval_duration.total_seconds()
1952
* 1000), self._reset_approved)
1407
1953
self.send_changedstate()
1408
1409
## D-Bus methods, signals & properties
1410
1411
## Interfaces
1412
1413
## Signals
1414
1954
1955
# D-Bus methods, signals & properties
1956
1957
# Interfaces
1958
1959
# Signals
1960
1415
1961
# CheckerCompleted - signal
1416
1962
@dbus.service.signal(_interface, signature="nxs")
1417
1963
def CheckerCompleted(self, exitcode, waitstatus, command):
1418
1964
"D-Bus signal"
1419
1965
pass
1420
1966
1421
1967
# CheckerStarted - signal
1422
1968
@dbus.service.signal(_interface, signature="s")
1423
1969
def CheckerStarted(self, command):
1424
1970
"D-Bus signal"
1425
1971
pass
1426
1972
1427
1973
# PropertyChanged - signal
1428
1974
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1429
1975
@dbus.service.signal(_interface, signature="sv")
1430
1976
def PropertyChanged(self, property, value):
1431
1977
"D-Bus signal"
1432
1978
pass
1433
1979
1434
1980
# GotSecret - signal
1435
1981
@dbus.service.signal(_interface)
1436
1982
def GotSecret(self):
1439
1985
server to mandos-client
1440
1986
"""
1441
1987
pass
1442
1988
1443
1989
# Rejected - signal
1444
1990
@dbus.service.signal(_interface, signature="s")
1445
1991
def Rejected(self, reason):
1446
1992
"D-Bus signal"
1447
1993
pass
1448
1994
1449
1995
# NeedApproval - signal
1450
1996
@dbus.service.signal(_interface, signature="tb")
1451
1997
def NeedApproval(self, timeout, default):
1452
1998
"D-Bus signal"
1453
1999
return self.need_approval()
1454
1455
## Methods
1456
2000
2001
# Methods
2002
1457
2003
# Approve - method
1458
2004
@dbus.service.method(_interface, in_signature="b")
1459
2005
def Approve(self, value):
1460
2006
self.approve(value)
1461
2007
1462
2008
# CheckedOK - method
1463
2009
@dbus.service.method(_interface)
1464
2010
def CheckedOK(self):
1465
2011
self.checked_ok()
1466
2012
1467
2013
# Enable - method
2014
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1468
2015
@dbus.service.method(_interface)
1469
2016
def Enable(self):
1470
2017
"D-Bus method"
1471
2018
self.enable()
1472
2019
1473
2020
# StartChecker - method
2021
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1474
2022
@dbus.service.method(_interface)
1475
2023
def StartChecker(self):
1476
2024
"D-Bus method"
1477
2025
self.start_checker()
1478
2026
1479
2027
# Disable - method
2028
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1480
2029
@dbus.service.method(_interface)
1481
2030
def Disable(self):
1482
2031
"D-Bus method"
1483
2032
self.disable()
1484
2033
1485
2034
# StopChecker - method
2035
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1486
2036
@dbus.service.method(_interface)
1487
2037
def StopChecker(self):
1488
2038
self.stop_checker()
1489
1490
## Properties
1491
2039
2040
# Properties
2041
1492
2042
# ApprovalPending - property
1493
2043
@dbus_service_property(_interface, signature="b", access="read")
1494
2044
def ApprovalPending_dbus_property(self):
1495
2045
return dbus.Boolean(bool(self.approvals_pending))
1496
2046
1497
2047
# ApprovedByDefault - property
1498
2048
@dbus_service_property(_interface,
1499
2049
signature="b",
1502
2052
if value is None: # get
1503
2053
return dbus.Boolean(self.approved_by_default)
1504
2054
self.approved_by_default = bool(value)
1505
2055
1506
2056
# ApprovalDelay - property
1507
2057
@dbus_service_property(_interface,
1508
2058
signature="t",
1512
2062
return dbus.UInt64(self.approval_delay.total_seconds()
1513
2063
* 1000)
1514
2064
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1515
2065
1516
2066
# ApprovalDuration - property
1517
2067
@dbus_service_property(_interface,
1518
2068
signature="t",
1522
2072
return dbus.UInt64(self.approval_duration.total_seconds()
1523
2073
* 1000)
1524
2074
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1525
2075
1526
2076
# Name - property
2077
@dbus_annotations(
2078
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1527
2079
@dbus_service_property(_interface, signature="s", access="read")
1528
2080
def Name_dbus_property(self):
1529
2081
return dbus.String(self.name)
1530
2082
2083
# KeyID - property
2084
@dbus_annotations(
2085
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2086
@dbus_service_property(_interface, signature="s", access="read")
2087
def KeyID_dbus_property(self):
2088
return dbus.String(self.key_id)
2089
1531
2090
# Fingerprint - property
2091
@dbus_annotations(
2092
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1532
2093
@dbus_service_property(_interface, signature="s", access="read")
1533
2094
def Fingerprint_dbus_property(self):
1534
2095
return dbus.String(self.fingerprint)
1535
2096
1536
2097
# Host - property
1537
2098
@dbus_service_property(_interface,
1538
2099
signature="s",
1541
2102
if value is None: # get
1542
2103
return dbus.String(self.host)
1543
2104
self.host = str(value)
1544
2105
1545
2106
# Created - property
2107
@dbus_annotations(
2108
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1546
2109
@dbus_service_property(_interface, signature="s", access="read")
1547
2110
def Created_dbus_property(self):
1548
2111
return datetime_to_dbus(self.created)
1549
2112
1550
2113
# LastEnabled - property
1551
2114
@dbus_service_property(_interface, signature="s", access="read")
1552
2115
def LastEnabled_dbus_property(self):
1553
2116
return datetime_to_dbus(self.last_enabled)
1554
2117
1555
2118
# Enabled - property
1556
2119
@dbus_service_property(_interface,
1557
2120
signature="b",
1563
2126
self.enable()
1564
2127
else:
1565
2128
self.disable()
1566
2129
1567
2130
# LastCheckedOK - property
1568
2131
@dbus_service_property(_interface,
1569
2132
signature="s",
1573
2136
self.checked_ok()
1574
2137
return
1575
2138
return datetime_to_dbus(self.last_checked_ok)
1576
2139
1577
2140
# LastCheckerStatus - property
1578
2141
@dbus_service_property(_interface, signature="n", access="read")
1579
2142
def LastCheckerStatus_dbus_property(self):
1580
2143
return dbus.Int16(self.last_checker_status)
1581
2144
1582
2145
# Expires - property
1583
2146
@dbus_service_property(_interface, signature="s", access="read")
1584
2147
def Expires_dbus_property(self):
1585
2148
return datetime_to_dbus(self.expires)
1586
2149
1587
2150
# LastApprovalRequest - property
1588
2151
@dbus_service_property(_interface, signature="s", access="read")
1589
2152
def LastApprovalRequest_dbus_property(self):
1590
2153
return datetime_to_dbus(self.last_approval_request)
1591
2154
1592
2155
# Timeout - property
1593
2156
@dbus_service_property(_interface,
1594
2157
signature="t",
1609
2172
if (getattr(self, "disable_initiator_tag", None)
1610
2173
is None):
1611
2174
return
1612
gobject.source_remove(self.disable_initiator_tag)
1613
self.disable_initiator_tag = gobject.timeout_add(
2175
GLib.source_remove(self.disable_initiator_tag)
2176
self.disable_initiator_tag = GLib.timeout_add(
1614
2177
int((self.expires - now).total_seconds() * 1000),
1615
2178
self.disable)
1616
2179
1617
2180
# ExtendedTimeout - property
1618
2181
@dbus_service_property(_interface,
1619
2182
signature="t",
1623
2186
return dbus.UInt64(self.extended_timeout.total_seconds()
1624
2187
* 1000)
1625
2188
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1626
2189
1627
2190
# Interval - property
1628
2191
@dbus_service_property(_interface,
1629
2192
signature="t",
1636
2199
return
1637
2200
if self.enabled:
1638
2201
# Reschedule checker run
1639
gobject.source_remove(self.checker_initiator_tag)
1640
self.checker_initiator_tag = gobject.timeout_add(
2202
GLib.source_remove(self.checker_initiator_tag)
2203
self.checker_initiator_tag = GLib.timeout_add(
1641
2204
value, self.start_checker)
1642
self.start_checker() # Start one now, too
1643
2205
self.start_checker() # Start one now, too
2206
1644
2207
# Checker - property
1645
2208
@dbus_service_property(_interface,
1646
2209
signature="s",
1649
2212
if value is None: # get
1650
2213
return dbus.String(self.checker_command)
1651
2214
self.checker_command = str(value)
1652
2215
1653
2216
# CheckerRunning - property
1654
2217
@dbus_service_property(_interface,
1655
2218
signature="b",
1661
2224
self.start_checker()
1662
2225
else:
1663
2226
self.stop_checker()
1664
2227
1665
2228
# ObjectPath - property
2229
@dbus_annotations(
2230
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2231
"org.freedesktop.DBus.Deprecated": "true"})
1666
2232
@dbus_service_property(_interface, signature="o", access="read")
1667
2233
def ObjectPath_dbus_property(self):
1668
return self.dbus_object_path # is already a dbus.ObjectPath
1669
2234
return self.dbus_object_path # is already a dbus.ObjectPath
2235
1670
2236
# Secret = property
2237
@dbus_annotations(
2238
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2239
"invalidates"})
1671
2240
@dbus_service_property(_interface,
1672
2241
signature="ay",
1673
2242
access="write",
1674
2243
byte_arrays=True)
1675
2244
def Secret_dbus_property(self, value):
1676
2245
self.secret = bytes(value)
1677
2246
1678
2247
del _interface
1679
2248
1680
2249
1681
class ProxyClient(object):
1682
def __init__(self, child_pipe, fpr, address):
2250
class ProxyClient:
2251
def __init__(self, child_pipe, key_id, fpr, address):
1683
2252
self._pipe = child_pipe
1684
self._pipe.send(('init', fpr, address))
2253
self._pipe.send(('init', key_id, fpr, address))
1685
2254
if not self._pipe.recv():
1686
raise KeyError(fpr)
1687
2255
raise KeyError(key_id or fpr)
2256
1688
2257
def __getattribute__(self, name):
1689
2258
if name == '_pipe':
1690
2259
return super(ProxyClient, self).__getattribute__(name)
1693
2262
if data[0] == 'data':
1694
2263
return data[1]
1695
2264
if data[0] == 'function':
1696
2265
1697
2266
def func(*args, **kwargs):
1698
2267
self._pipe.send(('funcall', name, args, kwargs))
1699
2268
return self._pipe.recv()[1]
1700
2269
1701
2270
return func
1702
2271
1703
2272
def __setattr__(self, name, value):
1704
2273
if name == '_pipe':
1705
2274
return super(ProxyClient, self).__setattr__(name, value)
1708
2277
1709
2278
class ClientHandler(socketserver.BaseRequestHandler, object):
1710
2279
"""A class to handle client connections.
1711
2280
1712
2281
Instantiated once for each connection to handle it.
1713
2282
Note: This will run in its own forked process."""
1714
2283
1715
2284
def handle(self):
1716
2285
with contextlib.closing(self.server.child_pipe) as child_pipe:
1717
2286
logger.info("TCP connection from: %s",
1718
2287
str(self.client_address))
1719
2288
logger.debug("Pipe FD: %d",
1720
2289
self.server.child_pipe.fileno())
1721
1722
session = gnutls.connection.ClientSession(
1723
self.request, gnutls.connection .X509Credentials())
1724
1725
# Note: gnutls.connection.X509Credentials is really a
1726
# generic GnuTLS certificate credentials object so long as
1727
# no X.509 keys are added to it. Therefore, we can use it
1728
# here despite using OpenPGP certificates.
1729
1730
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1731
# "+AES-256-CBC", "+SHA1",
1732
# "+COMP-NULL", "+CTYPE-OPENPGP",
1733
# "+DHE-DSS"))
2290
2291
session = gnutls.ClientSession(self.request)
2292
2293
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2294
# "+AES-256-CBC", "+SHA1",
2295
# "+COMP-NULL", "+CTYPE-OPENPGP",
2296
# "+DHE-DSS"))
1734
2297
# Use a fallback default, since this MUST be set.
1735
2298
priority = self.server.gnutls_priority
1736
2299
if priority is None:
1737
2300
priority = "NORMAL"
1738
gnutls.library.functions.gnutls_priority_set_direct(
1739
session._c_object, priority, None)
1740
2301
gnutls.priority_set_direct(session._c_object,
2302
priority.encode("utf-8"),
2303
None)
2304
1741
2305
# Start communication using the Mandos protocol
1742
2306
# Get protocol number
1743
2307
line = self.request.makefile().readline()
1748
2312
except (ValueError, IndexError, RuntimeError) as error:
1749
2313
logger.error("Unknown protocol version: %s", error)
1750
2314
return
1751
2315
1752
2316
# Start GnuTLS connection
1753
2317
try:
1754
2318
session.handshake()
1755
except gnutls.errors.GNUTLSError as error:
2319
except gnutls.Error as error:
1756
2320
logger.warning("Handshake failed: %s", error)
1757
2321
# Do not run session.bye() here: the session is not
1758
2322
# established. Just abandon the request.
1759
2323
return
1760
2324
logger.debug("Handshake succeeded")
1761
2325
1762
2326
approval_required = False
1763
2327
try:
1764
try:
1765
fpr = self.fingerprint(
1766
self.peer_certificate(session))
1767
except (TypeError,
1768
gnutls.errors.GNUTLSError) as error:
1769
logger.warning("Bad certificate: %s", error)
1770
return
1771
logger.debug("Fingerprint: %s", fpr)
1772
1773
try:
1774
client = ProxyClient(child_pipe, fpr,
2328
if gnutls.has_rawpk:
2329
fpr = b""
2330
try:
2331
key_id = self.key_id(
2332
self.peer_certificate(session))
2333
except (TypeError, gnutls.Error) as error:
2334
logger.warning("Bad certificate: %s", error)
2335
return
2336
logger.debug("Key ID: %s", key_id)
2337
2338
else:
2339
key_id = b""
2340
try:
2341
fpr = self.fingerprint(
2342
self.peer_certificate(session))
2343
except (TypeError, gnutls.Error) as error:
2344
logger.warning("Bad certificate: %s", error)
2345
return
2346
logger.debug("Fingerprint: %s", fpr)
2347
2348
try:
2349
client = ProxyClient(child_pipe, key_id, fpr,
1775
2350
self.client_address)
1776
2351
except KeyError:
1777
2352
return
1778
2353
1779
2354
if client.approval_delay:
1780
2355
delay = client.approval_delay
1781
2356
client.approvals_pending += 1
1782
2357
approval_required = True
1783
2358
1784
2359
while True:
1785
2360
if not client.enabled:
1786
2361
logger.info("Client %s is disabled",
1789
2364
# Emit D-Bus signal
1790
2365
client.Rejected("Disabled")
1791
2366
return
1792
2367
1793
2368
if client.approved or not client.approval_delay:
1794
#We are approved or approval is disabled
2369
# We are approved or approval is disabled
1795
2370
break
1796
2371
elif client.approved is None:
1797
2372
logger.info("Client %s needs approval",
1808
2383
# Emit D-Bus signal
1809
2384
client.Rejected("Denied")
1810
2385
return
1811
1812
#wait until timeout or approved
2386
2387
# wait until timeout or approved
1813
2388
time = datetime.datetime.now()
1814
2389
client.changedstate.acquire()
1815
2390
client.changedstate.wait(delay.total_seconds())
1828
2403
break
1829
2404
else:
1830
2405
delay -= time2 - time
1831
1832
sent_size = 0
1833
while sent_size < len(client.secret):
1834
try:
1835
sent = session.send(client.secret[sent_size:])
1836
except gnutls.errors.GNUTLSError as error:
1837
logger.warning("gnutls send failed",
1838
exc_info=error)
1839
return
1840
logger.debug("Sent: %d, remaining: %d", sent,
1841
len(client.secret) - (sent_size
1842
+ sent))
1843
sent_size += sent
1844
2406
2407
try:
2408
session.send(client.secret)
2409
except gnutls.Error as error:
2410
logger.warning("gnutls send failed",
2411
exc_info=error)
2412
return
2413
1845
2414
logger.info("Sending secret to %s", client.name)
1846
2415
# bump the timeout using extended_timeout
1847
2416
client.bump_timeout(client.extended_timeout)
1848
2417
if self.server.use_dbus:
1849
2418
# Emit D-Bus signal
1850
2419
client.GotSecret()
1851
2420
1852
2421
finally:
1853
2422
if approval_required:
1854
2423
client.approvals_pending -= 1
1855
2424
try:
1856
2425
session.bye()
1857
except gnutls.errors.GNUTLSError as error:
2426
except gnutls.Error as error:
1858
2427
logger.warning("GnuTLS bye failed",
1859
2428
exc_info=error)
1860
2429
1861
2430
@staticmethod
1862
2431
def peer_certificate(session):
1863
"Return the peer's OpenPGP certificate as a bytestring"
1864
# If not an OpenPGP certificate...
1865
if (gnutls.library.functions.gnutls_certificate_type_get(
1866
session._c_object)
1867
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1868
# ...do the normal thing
1869
return session.peer_certificate
2432
"Return the peer's certificate as a bytestring"
2433
try:
2434
cert_type = gnutls.certificate_type_get2(session._c_object,
2435
gnutls.CTYPE_PEERS)
2436
except AttributeError:
2437
cert_type = gnutls.certificate_type_get(session._c_object)
2438
if gnutls.has_rawpk:
2439
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2440
else:
2441
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2442
# If not a valid certificate type...
2443
if cert_type not in valid_cert_types:
2444
logger.info("Cert type %r not in %r", cert_type,
2445
valid_cert_types)
2446
# ...return invalid data
2447
return b""
1870
2448
list_size = ctypes.c_uint(1)
1871
cert_list = (gnutls.library.functions
1872
.gnutls_certificate_get_peers
2449
cert_list = (gnutls.certificate_get_peers
1873
2450
(session._c_object, ctypes.byref(list_size)))
1874
2451
if not bool(cert_list) and list_size.value != 0:
1875
raise gnutls.errors.GNUTLSError("error getting peer"
1876
" certificate")
2452
raise gnutls.Error("error getting peer certificate")
1877
2453
if list_size.value == 0:
1878
2454
return None
1879
2455
cert = cert_list[0]
1880
2456
return ctypes.string_at(cert.data, cert.size)
1881
2457
2458
@staticmethod
2459
def key_id(certificate):
2460
"Convert a certificate bytestring to a hexdigit key ID"
2461
# New GnuTLS "datum" with the public key
2462
datum = gnutls.datum_t(
2463
ctypes.cast(ctypes.c_char_p(certificate),
2464
ctypes.POINTER(ctypes.c_ubyte)),
2465
ctypes.c_uint(len(certificate)))
2466
# XXX all these need to be created in the gnutls "module"
2467
# New empty GnuTLS certificate
2468
pubkey = gnutls.pubkey_t()
2469
gnutls.pubkey_init(ctypes.byref(pubkey))
2470
# Import the raw public key into the certificate
2471
gnutls.pubkey_import(pubkey,
2472
ctypes.byref(datum),
2473
gnutls.X509_FMT_DER)
2474
# New buffer for the key ID
2475
buf = ctypes.create_string_buffer(32)
2476
buf_len = ctypes.c_size_t(len(buf))
2477
# Get the key ID from the raw public key into the buffer
2478
gnutls.pubkey_get_key_id(
2479
pubkey,
2480
gnutls.KEYID_USE_SHA256,
2481
ctypes.cast(ctypes.byref(buf),
2482
ctypes.POINTER(ctypes.c_ubyte)),
2483
ctypes.byref(buf_len))
2484
# Deinit the certificate
2485
gnutls.pubkey_deinit(pubkey)
2486
2487
# Convert the buffer to a Python bytestring
2488
key_id = ctypes.string_at(buf, buf_len.value)
2489
# Convert the bytestring to hexadecimal notation
2490
hex_key_id = binascii.hexlify(key_id).upper()
2491
return hex_key_id
2492
1882
2493
@staticmethod
1883
2494
def fingerprint(openpgp):
1884
2495
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1885
2496
# New GnuTLS "datum" with the OpenPGP public key
1886
datum = gnutls.library.types.gnutls_datum_t(
2497
datum = gnutls.datum_t(
1887
2498
ctypes.cast(ctypes.c_char_p(openpgp),
1888
2499
ctypes.POINTER(ctypes.c_ubyte)),
1889
2500
ctypes.c_uint(len(openpgp)))
1890
2501
# New empty GnuTLS certificate
1891
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1892
gnutls.library.functions.gnutls_openpgp_crt_init(
1893
ctypes.byref(crt))
2502
crt = gnutls.openpgp_crt_t()
2503
gnutls.openpgp_crt_init(ctypes.byref(crt))
1894
2504
# Import the OpenPGP public key into the certificate
1895
gnutls.library.functions.gnutls_openpgp_crt_import(
1896
crt, ctypes.byref(datum),
1897
gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)
2505
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2506
gnutls.OPENPGP_FMT_RAW)
1898
2507
# Verify the self signature in the key
1899
2508
crtverify = ctypes.c_uint()
1900
gnutls.library.functions.gnutls_openpgp_crt_verify_self(
1901
crt, 0, ctypes.byref(crtverify))
2509
gnutls.openpgp_crt_verify_self(crt, 0,
2510
ctypes.byref(crtverify))
1902
2511
if crtverify.value != 0:
1903
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1904
raise gnutls.errors.CertificateSecurityError(
1905
"Verify failed")
2512
gnutls.openpgp_crt_deinit(crt)
2513
raise gnutls.CertificateSecurityError(code
2514
=crtverify.value)
1906
2515
# New buffer for the fingerprint
1907
2516
buf = ctypes.create_string_buffer(20)
1908
2517
buf_len = ctypes.c_size_t()
1909
2518
# Get the fingerprint from the certificate into the buffer
1910
gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint(
1911
crt, ctypes.byref(buf), ctypes.byref(buf_len))
2519
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2520
ctypes.byref(buf_len))
1912
2521
# Deinit the certificate
1913
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2522
gnutls.openpgp_crt_deinit(crt)
1914
2523
# Convert the buffer to a Python bytestring
1915
2524
fpr = ctypes.string_at(buf, buf_len.value)
1916
2525
# Convert the bytestring to hexadecimal notation
1918
2527
return hex_fpr
1919
2528
1920
2529
1921
class MultiprocessingMixIn(object):
2530
class MultiprocessingMixIn:
1922
2531
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
1923
2532
1924
2533
def sub_process_main(self, request, address):
1925
2534
try:
1926
2535
self.finish_request(request, address)
1927
2536
except Exception:
1928
2537
self.handle_error(request, address)
1929
2538
self.close_request(request)
1930
2539
1931
2540
def process_request(self, request, address):
1932
2541
"""Start a new process to process the request."""
1933
proc = multiprocessing.Process(target = self.sub_process_main,
1934
args = (request, address))
2542
proc = multiprocessing.Process(target=self.sub_process_main,
2543
args=(request, address))
1935
2544
proc.start()
1936
2545
return proc
1937
2546
1938
2547
1939
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2548
class MultiprocessingMixInWithPipe(MultiprocessingMixIn):
1940
2549
""" adds a pipe to the MixIn """
1941
2550
1942
2551
def process_request(self, request, client_address):
1943
2552
"""Overrides and wraps the original process_request().
1944
2553
1945
2554
This function creates a new pipe in self.pipe
1946
2555
"""
1947
2556
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1948
2557
1949
2558
proc = MultiprocessingMixIn.process_request(self, request,
1950
2559
client_address)
1951
2560
self.child_pipe.close()
1952
2561
self.add_pipe(parent_pipe, proc)
1953
2562
1954
2563
def add_pipe(self, parent_pipe, proc):
1955
2564
"""Dummy function; override as necessary"""
1956
2565
raise NotImplementedError()
1957
2566
1958
2567
1959
2568
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1960
socketserver.TCPServer, object):
2569
socketserver.TCPServer):
1961
2570
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1962
2571
1963
2572
Attributes:
1964
2573
enabled: Boolean; whether this server is activated yet
1965
2574
interface: None or a network interface name (string)
1966
2575
use_ipv6: Boolean; to use IPv6 or not
1967
2576
"""
1968
2577
1969
2578
def __init__(self, server_address, RequestHandlerClass,
1970
2579
interface=None,
1971
2580
use_ipv6=True,
1981
2590
self.socketfd = socketfd
1982
2591
# Save the original socket.socket() function
1983
2592
self.socket_socket = socket.socket
2593
1984
2594
# To implement --socket, we monkey patch socket.socket.
1985
#
2595
#
1986
2596
# (When socketserver.TCPServer is a new-style class, we
1987
2597
# could make self.socket into a property instead of monkey
1988
2598
# patching socket.socket.)
1989
#
2599
#
1990
2600
# Create a one-time-only replacement for socket.socket()
1991
2601
@functools.wraps(socket.socket)
1992
2602
def socket_wrapper(*args, **kwargs):
2004
2614
# socket_wrapper(), if socketfd was set.
2005
2615
socketserver.TCPServer.__init__(self, server_address,
2006
2616
RequestHandlerClass)
2007
2617
2008
2618
def server_bind(self):
2009
2619
"""This overrides the normal server_bind() function
2010
2620
to bind to an interface if one was specified, and also NOT to
2011
2621
bind to an address or port if they were not specified."""
2622
global SO_BINDTODEVICE
2012
2623
if self.interface is not None:
2013
2624
if SO_BINDTODEVICE is None:
2014
logger.error("SO_BINDTODEVICE does not exist;"
2015
" cannot bind to interface %s",
2016
self.interface)
2017
else:
2018
try:
2019
self.socket.setsockopt(
2020
socket.SOL_SOCKET, SO_BINDTODEVICE,
2021
(self.interface + "\0").encode("utf-8"))
2022
except socket.error as error:
2023
if error.errno == errno.EPERM:
2024
logger.error("No permission to bind to"
2025
" interface %s", self.interface)
2026
elif error.errno == errno.ENOPROTOOPT:
2027
logger.error("SO_BINDTODEVICE not available;"
2028
" cannot bind to interface %s",
2029
self.interface)
2030
elif error.errno == errno.ENODEV:
2031
logger.error("Interface %s does not exist,"
2032
" cannot bind", self.interface)
2033
else:
2034
raise
2625
# Fall back to a hard-coded value which seems to be
2626
# common enough.
2627
logger.warning("SO_BINDTODEVICE not found, trying 25")
2628
SO_BINDTODEVICE = 25
2629
try:
2630
self.socket.setsockopt(
2631
socket.SOL_SOCKET, SO_BINDTODEVICE,
2632
(self.interface + "\0").encode("utf-8"))
2633
except socket.error as error:
2634
if error.errno == errno.EPERM:
2635
logger.error("No permission to bind to"
2636
" interface %s", self.interface)
2637
elif error.errno == errno.ENOPROTOOPT:
2638
logger.error("SO_BINDTODEVICE not available;"
2639
" cannot bind to interface %s",
2640
self.interface)
2641
elif error.errno == errno.ENODEV:
2642
logger.error("Interface %s does not exist,"
2643
" cannot bind", self.interface)
2644
else:
2645
raise
2035
2646
# Only bind(2) the socket if we really need to.
2036
2647
if self.server_address[0] or self.server_address[1]:
2648
if self.server_address[1]:
2649
self.allow_reuse_address = True
2037
2650
if not self.server_address[0]:
2038
2651
if self.address_family == socket.AF_INET6:
2039
any_address = "::" # in6addr_any
2652
any_address = "::" # in6addr_any
2040
2653
else:
2041
any_address = "0.0.0.0" # INADDR_ANY
2654
any_address = "0.0.0.0" # INADDR_ANY
2042
2655
self.server_address = (any_address,
2043
2656
self.server_address[1])
2044
2657
elif not self.server_address[1]:
2054
2667
2055
2668
class MandosServer(IPv6_TCPServer):
2056
2669
"""Mandos server.
2057
2670
2058
2671
Attributes:
2059
2672
clients: set of Client objects
2060
2673
gnutls_priority GnuTLS priority string
2061
2674
use_dbus: Boolean; to emit D-Bus signals or not
2062
2063
Assumes a gobject.MainLoop event loop.
2675
2676
Assumes a GLib.MainLoop event loop.
2064
2677
"""
2065
2678
2066
2679
def __init__(self, server_address, RequestHandlerClass,
2067
2680
interface=None,
2068
2681
use_ipv6=True,
2078
2691
self.gnutls_priority = gnutls_priority
2079
2692
IPv6_TCPServer.__init__(self, server_address,
2080
2693
RequestHandlerClass,
2081
interface = interface,
2082
use_ipv6 = use_ipv6,
2083
socketfd = socketfd)
2084
2694
interface=interface,
2695
use_ipv6=use_ipv6,
2696
socketfd=socketfd)
2697
2085
2698
def server_activate(self):
2086
2699
if self.enabled:
2087
2700
return socketserver.TCPServer.server_activate(self)
2088
2701
2089
2702
def enable(self):
2090
2703
self.enabled = True
2091
2704
2092
2705
def add_pipe(self, parent_pipe, proc):
2093
2706
# Call "handle_ipc" for both data and EOF events
2094
gobject.io_add_watch(
2095
parent_pipe.fileno(),
2096
gobject.IO_IN | gobject.IO_HUP,
2707
GLib.io_add_watch(
2708
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2709
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2097
2710
functools.partial(self.handle_ipc,
2098
parent_pipe = parent_pipe,
2099
proc = proc))
2100
2711
parent_pipe=parent_pipe,
2712
proc=proc))
2713
2101
2714
def handle_ipc(self, source, condition,
2102
2715
parent_pipe=None,
2103
proc = None,
2716
proc=None,
2104
2717
client_object=None):
2105
2718
# error, or the other end of multiprocessing.Pipe has closed
2106
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2719
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2107
2720
# Wait for other process to exit
2108
2721
proc.join()
2109
2722
return False
2110
2723
2111
2724
# Read a request from the child
2112
2725
request = parent_pipe.recv()
2113
2726
command = request[0]
2114
2727
2115
2728
if command == 'init':
2116
fpr = request[1]
2117
address = request[2]
2118
2119
for c in self.clients.itervalues():
2120
if c.fingerprint == fpr:
2729
key_id = request[1].decode("ascii")
2730
fpr = request[2].decode("ascii")
2731
address = request[3]
2732
2733
for c in self.clients.values():
2734
if key_id == ("E3B0C44298FC1C149AFBF4C8996FB924"
2735
"27AE41E4649B934CA495991B7852B855"):
2736
continue
2737
if key_id and c.key_id == key_id:
2738
client = c
2739
break
2740
if fpr and c.fingerprint == fpr:
2121
2741
client = c
2122
2742
break
2123
2743
else:
2124
logger.info("Client not found for fingerprint: %s, ad"
2125
"dress: %s", fpr, address)
2744
logger.info("Client not found for key ID: %s, address"
2745
": %s", key_id or fpr, address)
2126
2746
if self.use_dbus:
2127
2747
# Emit D-Bus signal
2128
mandos_dbus_service.ClientNotFound(fpr,
2748
mandos_dbus_service.ClientNotFound(key_id or fpr,
2129
2749
address[0])
2130
2750
parent_pipe.send(False)
2131
2751
return False
2132
2133
gobject.io_add_watch(
2134
parent_pipe.fileno(),
2135
gobject.IO_IN | gobject.IO_HUP,
2752
2753
GLib.io_add_watch(
2754
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2755
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2136
2756
functools.partial(self.handle_ipc,
2137
parent_pipe = parent_pipe,
2138
proc = proc,
2139
client_object = client))
2757
parent_pipe=parent_pipe,
2758
proc=proc,
2759
client_object=client))
2140
2760
parent_pipe.send(True)
2141
2761
# remove the old hook in favor of the new above hook on
2142
2762
# same fileno
2145
2765
funcname = request[1]
2146
2766
args = request[2]
2147
2767
kwargs = request[3]
2148
2768
2149
2769
parent_pipe.send(('data', getattr(client_object,
2150
2770
funcname)(*args,
2151
2771
**kwargs)))
2152
2772
2153
2773
if command == 'getattr':
2154
2774
attrname = request[1]
2155
2775
if isinstance(client_object.__getattribute__(attrname),
2156
collections.Callable):
2776
collections.abc.Callable):
2157
2777
parent_pipe.send(('function', ))
2158
2778
else:
2159
2779
parent_pipe.send((
2160
2780
'data', client_object.__getattribute__(attrname)))
2161
2781
2162
2782
if command == 'setattr':
2163
2783
attrname = request[1]
2164
2784
value = request[2]
2165
2785
setattr(client_object, attrname, value)
2166
2786
2167
2787
return True
2168
2788
2169
2789
2170
2790
def rfc3339_duration_to_delta(duration):
2171
2791
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2172
2173
>>> rfc3339_duration_to_delta("P7D")
2174
datetime.timedelta(7)
2175
>>> rfc3339_duration_to_delta("PT60S")
2176
datetime.timedelta(0, 60)
2177
>>> rfc3339_duration_to_delta("PT60M")
2178
datetime.timedelta(0, 3600)
2179
>>> rfc3339_duration_to_delta("PT24H")
2180
datetime.timedelta(1)
2181
>>> rfc3339_duration_to_delta("P1W")
2182
datetime.timedelta(7)
2183
>>> rfc3339_duration_to_delta("PT5M30S")
2184
datetime.timedelta(0, 330)
2185
>>> rfc3339_duration_to_delta("P1DT3M20S")
2186
datetime.timedelta(1, 200)
2792
2793
>>> timedelta = datetime.timedelta
2794
>>> rfc3339_duration_to_delta("P7D") == timedelta(7)
2795
True
2796
>>> rfc3339_duration_to_delta("PT60S") == timedelta(0, 60)
2797
True
2798
>>> rfc3339_duration_to_delta("PT60M") == timedelta(0, 3600)
2799
True
2800
>>> rfc3339_duration_to_delta("PT24H") == timedelta(1)
2801
True
2802
>>> rfc3339_duration_to_delta("P1W") == timedelta(7)
2803
True
2804
>>> rfc3339_duration_to_delta("PT5M30S") == timedelta(0, 330)
2805
True
2806
>>> rfc3339_duration_to_delta("P1DT3M20S") == timedelta(1, 200)
2807
True
2808
>>> del timedelta
2187
2809
"""
2188
2810
2189
2811
# Parsing an RFC 3339 duration with regular expressions is not
2190
2812
# possible - there would have to be multiple places for the same
2191
2813
# values, like seconds. The current code, while more esoteric, is
2192
2814
# cleaner without depending on a parsing library. If Python had a
2193
2815
# built-in library for parsing we would use it, but we'd like to
2194
2816
# avoid excessive use of external libraries.
2195
2817
2196
2818
# New type for defining tokens, syntax, and semantics all-in-one
2197
2819
Token = collections.namedtuple("Token", (
2198
2820
"regexp", # To match token; if "value" is not None, must have
2231
2853
frozenset((token_year, token_month,
2232
2854
token_day, token_time,
2233
2855
token_week)))
2234
# Define starting values
2235
value = datetime.timedelta() # Value so far
2856
# Define starting values:
2857
# Value so far
2858
value = datetime.timedelta()
2236
2859
found_token = None
2237
followers = frozenset((token_duration, )) # Following valid tokens
2238
s = duration # String left to parse
2860
# Following valid tokens
2861
followers = frozenset((token_duration, ))
2862
# String left to parse
2863
s = duration
2239
2864
# Loop until end token is found
2240
2865
while found_token is not token_end:
2241
2866
# Search for any currently valid tokens
2265
2890
2266
2891
def string_to_delta(interval):
2267
2892
"""Parse a string and return a datetime.timedelta
2268
2269
>>> string_to_delta('7d')
2270
datetime.timedelta(7)
2271
>>> string_to_delta('60s')
2272
datetime.timedelta(0, 60)
2273
>>> string_to_delta('60m')
2274
datetime.timedelta(0, 3600)
2275
>>> string_to_delta('24h')
2276
datetime.timedelta(1)
2277
>>> string_to_delta('1w')
2278
datetime.timedelta(7)
2279
>>> string_to_delta('5m 30s')
2280
datetime.timedelta(0, 330)
2893
2894
>>> string_to_delta('7d') == datetime.timedelta(7)
2895
True
2896
>>> string_to_delta('60s') == datetime.timedelta(0, 60)
2897
True
2898
>>> string_to_delta('60m') == datetime.timedelta(0, 3600)
2899
True
2900
>>> string_to_delta('24h') == datetime.timedelta(1)
2901
True
2902
>>> string_to_delta('1w') == datetime.timedelta(7)
2903
True
2904
>>> string_to_delta('5m 30s') == datetime.timedelta(0, 330)
2905
True
2281
2906
"""
2282
2907
2283
2908
try:
2284
2909
return rfc3339_duration_to_delta(interval)
2285
2910
except ValueError:
2286
2911
pass
2287
2912
2288
2913
timevalue = datetime.timedelta(0)
2289
2914
for s in interval.split():
2290
2915
try:
2308
2933
return timevalue
2309
2934
2310
2935
2311
def daemon(nochdir = False, noclose = False):
2936
def daemon(nochdir=False, noclose=False):
2312
2937
"""See daemon(3). Standard BSD Unix function.
2313
2938
2314
2939
This should really exist as os.daemon, but it doesn't (yet)."""
2315
2940
if os.fork():
2316
2941
sys.exit()
2334
2959
2335
2960
2336
2961
def main():
2337
2962
2338
2963
##################################################################
2339
2964
# Parsing of options, both command line and config file
2340
2965
2341
2966
parser = argparse.ArgumentParser()
2342
2967
parser.add_argument("-v", "--version", action="version",
2343
version = "%(prog)s {}".format(version),
2968
version="%(prog)s {}".format(version),
2344
2969
help="show version number and exit")
2345
2970
parser.add_argument("-i", "--interface", metavar="IF",
2346
2971
help="Bind to interface IF")
2382
3007
parser.add_argument("--no-zeroconf", action="store_false",
2383
3008
dest="zeroconf", help="Do not use Zeroconf",
2384
3009
default=None)
2385
3010
2386
3011
options = parser.parse_args()
2387
2388
if options.check:
2389
import doctest
2390
fail_count, test_count = doctest.testmod()
2391
sys.exit(os.EX_OK if fail_count == 0 else 1)
2392
3012
2393
3013
# Default values for config file for server-global settings
2394
server_defaults = { "interface": "",
2395
"address": "",
2396
"port": "",
2397
"debug": "False",
2398
"priority":
2399
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2400
":+SIGN-DSA-SHA256",
2401
"servicename": "Mandos",
2402
"use_dbus": "True",
2403
"use_ipv6": "True",
2404
"debuglevel": "",
2405
"restore": "True",
2406
"socket": "",
2407
"statedir": "/var/lib/mandos",
2408
"foreground": "False",
2409
"zeroconf": "True",
2410
}
2411
3014
if gnutls.has_rawpk:
3015
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
3016
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
3017
else:
3018
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
3019
":+SIGN-DSA-SHA256")
3020
server_defaults = {"interface": "",
3021
"address": "",
3022
"port": "",
3023
"debug": "False",
3024
"priority": priority,
3025
"servicename": "Mandos",
3026
"use_dbus": "True",
3027
"use_ipv6": "True",
3028
"debuglevel": "",
3029
"restore": "True",
3030
"socket": "",
3031
"statedir": "/var/lib/mandos",
3032
"foreground": "False",
3033
"zeroconf": "True",
3034
}
3035
del priority
3036
2412
3037
# Parse config file for server-global settings
2413
server_config = configparser.SafeConfigParser(server_defaults)
3038
server_config = configparser.ConfigParser(server_defaults)
2414
3039
del server_defaults
2415
3040
server_config.read(os.path.join(options.configdir, "mandos.conf"))
2416
# Convert the SafeConfigParser object to a dict
3041
# Convert the ConfigParser object to a dict
2417
3042
server_settings = server_config.defaults()
2418
3043
# Use the appropriate methods on the non-string config options
2419
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
3044
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3045
"foreground", "zeroconf"):
2420
3046
server_settings[option] = server_config.getboolean("DEFAULT",
2421
3047
option)
2422
3048
if server_settings["port"]:
2432
3058
server_settings["socket"] = os.dup(server_settings
2433
3059
["socket"])
2434
3060
del server_config
2435
3061
2436
3062
# Override the settings from the config file with command line
2437
3063
# options, if set.
2438
3064
for option in ("interface", "address", "port", "debug",
2456
3082
if server_settings["debug"]:
2457
3083
server_settings["foreground"] = True
2458
3084
# Now we have our good server settings in "server_settings"
2459
3085
2460
3086
##################################################################
2461
3087
2462
3088
if (not server_settings["zeroconf"]
2463
3089
and not (server_settings["port"]
2464
3090
or server_settings["socket"] != "")):
2465
3091
parser.error("Needs port or socket to work without Zeroconf")
2466
3092
2467
3093
# For convenience
2468
3094
debug = server_settings["debug"]
2469
3095
debuglevel = server_settings["debuglevel"]
2473
3099
stored_state_file)
2474
3100
foreground = server_settings["foreground"]
2475
3101
zeroconf = server_settings["zeroconf"]
2476
3102
2477
3103
if debug:
2478
3104
initlogger(debug, logging.DEBUG)
2479
3105
else:
2482
3108
else:
2483
3109
level = getattr(logging, debuglevel.upper())
2484
3110
initlogger(debug, level)
2485
3111
2486
3112
if server_settings["servicename"] != "Mandos":
2487
3113
syslogger.setFormatter(
2488
3114
logging.Formatter('Mandos ({}) [%(process)d]:'
2489
3115
' %(levelname)s: %(message)s'.format(
2490
3116
server_settings["servicename"])))
2491
3117
2492
3118
# Parse config file with clients
2493
client_config = configparser.SafeConfigParser(Client
2494
.client_defaults)
3119
client_config = configparser.ConfigParser(Client.client_defaults)
2495
3120
client_config.read(os.path.join(server_settings["configdir"],
2496
3121
"clients.conf"))
2497
3122
2498
3123
global mandos_dbus_service
2499
3124
mandos_dbus_service = None
2500
3125
2501
3126
socketfd = None
2502
3127
if server_settings["socket"] != "":
2503
3128
socketfd = server_settings["socket"]
2519
3144
except IOError as e:
2520
3145
logger.error("Could not open file %r", pidfilename,
2521
3146
exc_info=e)
2522
2523
for name in ("_mandos", "mandos", "nobody"):
3147
3148
for name, group in (("_mandos", "_mandos"),
3149
("mandos", "mandos"),
3150
("nobody", "nogroup")):
2524
3151
try:
2525
3152
uid = pwd.getpwnam(name).pw_uid
2526
gid = pwd.getpwnam(name).pw_gid
3153
gid = pwd.getpwnam(group).pw_gid
2527
3154
break
2528
3155
except KeyError:
2529
3156
continue
2533
3160
try:
2534
3161
os.setgid(gid)
2535
3162
os.setuid(uid)
3163
if debug:
3164
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3165
gid))
2536
3166
except OSError as error:
3167
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3168
.format(uid, gid, os.strerror(error.errno)))
2537
3169
if error.errno != errno.EPERM:
2538
3170
raise
2539
3171
2540
3172
if debug:
2541
3173
# Enable all possible GnuTLS debugging
2542
3174
2543
3175
# "Use a log level over 10 to enable all debugging options."
2544
3176
# - GnuTLS manual
2545
gnutls.library.functions.gnutls_global_set_log_level(11)
2546
2547
@gnutls.library.types.gnutls_log_func
3177
gnutls.global_set_log_level(11)
3178
3179
@gnutls.log_func
2548
3180
def debug_gnutls(level, string):
2549
3181
logger.debug("GnuTLS: %s", string[:-1])
2550
2551
gnutls.library.functions.gnutls_global_set_log_function(
2552
debug_gnutls)
2553
3182
3183
gnutls.global_set_log_function(debug_gnutls)
3184
2554
3185
# Redirect stdin so all checkers get /dev/null
2555
3186
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2556
3187
os.dup2(null, sys.stdin.fileno())
2557
3188
if null > 2:
2558
3189
os.close(null)
2559
3190
2560
3191
# Need to fork before connecting to D-Bus
2561
3192
if not foreground:
2562
3193
# Close all input and output, do double fork, etc.
2563
3194
daemon()
2564
2565
# multiprocessing will use threads, so before we use gobject we
2566
# need to inform gobject that threads will be used.
2567
gobject.threads_init()
2568
3195
3196
if gi.version_info < (3, 10, 2):
3197
# multiprocessing will use threads, so before we use GLib we
3198
# need to inform GLib that threads will be used.
3199
GLib.threads_init()
3200
2569
3201
global main_loop
2570
3202
# From the Avahi example code
2571
3203
DBusGMainLoop(set_as_default=True)
2572
main_loop = gobject.MainLoop()
3204
main_loop = GLib.MainLoop()
2573
3205
bus = dbus.SystemBus()
2574
3206
# End of Avahi example code
2575
3207
if use_dbus:
2588
3220
if zeroconf:
2589
3221
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2590
3222
service = AvahiServiceToSyslog(
2591
name = server_settings["servicename"],
2592
servicetype = "_mandos._tcp",
2593
protocol = protocol,
2594
bus = bus)
3223
name=server_settings["servicename"],
3224
servicetype="_mandos._tcp",
3225
protocol=protocol,
3226
bus=bus)
2595
3227
if server_settings["interface"]:
2596
3228
service.interface = if_nametoindex(
2597
3229
server_settings["interface"].encode("utf-8"))
2598
3230
2599
3231
global multiprocessing_manager
2600
3232
multiprocessing_manager = multiprocessing.Manager()
2601
3233
2602
3234
client_class = Client
2603
3235
if use_dbus:
2604
client_class = functools.partial(ClientDBus, bus = bus)
2605
3236
client_class = functools.partial(ClientDBus, bus=bus)
3237
2606
3238
client_settings = Client.config_parser(client_config)
2607
3239
old_client_settings = {}
2608
3240
clients_data = {}
2609
3241
2610
3242
# This is used to redirect stdout and stderr for checker processes
2611
3243
global wnull
2612
wnull = open(os.devnull, "w") # A writable /dev/null
3244
wnull = open(os.devnull, "w") # A writable /dev/null
2613
3245
# Only used if server is running in foreground but not in debug
2614
3246
# mode
2615
3247
if debug or not foreground:
2616
3248
wnull.close()
2617
3249
2618
3250
# Get client data and settings from last running state.
2619
3251
if server_settings["restore"]:
2620
3252
try:
2621
3253
with open(stored_state_path, "rb") as stored_state:
2622
clients_data, old_client_settings = pickle.load(
2623
stored_state)
3254
if sys.version_info.major == 2:
3255
clients_data, old_client_settings = pickle.load(
3256
stored_state)
3257
else:
3258
bytes_clients_data, bytes_old_client_settings = (
3259
pickle.load(stored_state, encoding="bytes"))
3260
# Fix bytes to strings
3261
# clients_data
3262
# .keys()
3263
clients_data = {(key.decode("utf-8")
3264
if isinstance(key, bytes)
3265
else key): value
3266
for key, value in
3267
bytes_clients_data.items()}
3268
del bytes_clients_data
3269
for key in clients_data:
3270
value = {(k.decode("utf-8")
3271
if isinstance(k, bytes) else k): v
3272
for k, v in
3273
clients_data[key].items()}
3274
clients_data[key] = value
3275
# .client_structure
3276
value["client_structure"] = [
3277
(s.decode("utf-8")
3278
if isinstance(s, bytes)
3279
else s) for s in
3280
value["client_structure"]]
3281
# .name, .host, and .checker_command
3282
for k in ("name", "host", "checker_command"):
3283
if isinstance(value[k], bytes):
3284
value[k] = value[k].decode("utf-8")
3285
if "key_id" not in value:
3286
value["key_id"] = ""
3287
elif "fingerprint" not in value:
3288
value["fingerprint"] = ""
3289
# old_client_settings
3290
# .keys()
3291
old_client_settings = {
3292
(key.decode("utf-8")
3293
if isinstance(key, bytes)
3294
else key): value
3295
for key, value in
3296
bytes_old_client_settings.items()}
3297
del bytes_old_client_settings
3298
# .host and .checker_command
3299
for value in old_client_settings.values():
3300
for attribute in ("host", "checker_command"):
3301
if isinstance(value[attribute], bytes):
3302
value[attribute] = (value[attribute]
3303
.decode("utf-8"))
2624
3304
os.remove(stored_state_path)
2625
3305
except IOError as e:
2626
3306
if e.errno == errno.ENOENT:
2634
3314
logger.warning("Could not load persistent state: "
2635
3315
"EOFError:",
2636
3316
exc_info=e)
2637
3317
2638
3318
with PGPEngine() as pgp:
2639
3319
for client_name, client in clients_data.items():
2640
3320
# Skip removed clients
2641
3321
if client_name not in client_settings:
2642
3322
continue
2643
3323
2644
3324
# Decide which value to use after restoring saved state.
2645
3325
# We have three different values: Old config file,
2646
3326
# new config file, and saved state.
2657
3337
client[name] = value
2658
3338
except KeyError:
2659
3339
pass
2660
3340
2661
3341
# Clients who has passed its expire date can still be
2662
3342
# enabled if its last checker was successful. A Client
2663
3343
# whose checker succeeded before we stored its state is
2696
3376
client_name))
2697
3377
client["secret"] = (client_settings[client_name]
2698
3378
["secret"])
2699
3379
2700
3380
# Add/remove clients based on new changes made to config
2701
3381
for client_name in (set(old_client_settings)
2702
3382
- set(client_settings)):
2704
3384
for client_name in (set(client_settings)
2705
3385
- set(old_client_settings)):
2706
3386
clients_data[client_name] = client_settings[client_name]
2707
3387
2708
3388
# Create all client objects
2709
3389
for client_name, client in clients_data.items():
2710
3390
tcp_server.clients[client_name] = client_class(
2711
name = client_name,
2712
settings = client,
2713
server_settings = server_settings)
2714
3391
name=client_name,
3392
settings=client,
3393
server_settings=server_settings)
3394
2715
3395
if not tcp_server.clients:
2716
3396
logger.warning("No clients defined")
2717
3397
2718
3398
if not foreground:
2719
3399
if pidfile is not None:
2720
3400
pid = os.getpid()
2726
3406
pidfilename, pid)
2727
3407
del pidfile
2728
3408
del pidfilename
2729
2730
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2731
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2732
3409
3410
for termsig in (signal.SIGHUP, signal.SIGTERM):
3411
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3412
lambda: main_loop.quit() and False)
3413
2733
3414
if use_dbus:
2734
3415
2735
3416
@alternate_dbus_interfaces(
2736
{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
2737
class MandosDBusService(DBusObjectWithProperties):
3417
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3418
class MandosDBusService(DBusObjectWithObjectManager):
2738
3419
"""A D-Bus proxy object"""
2739
3420
2740
3421
def __init__(self):
2741
3422
dbus.service.Object.__init__(self, bus, "/")
2742
3423
2743
3424
_interface = "se.recompile.Mandos"
2744
2745
@dbus_interface_annotations(_interface)
2746
def _foo(self):
2747
return {
2748
"org.freedesktop.DBus.Property.EmitsChangedSignal":
2749
"false" }
2750
3425
2751
3426
@dbus.service.signal(_interface, signature="o")
2752
3427
def ClientAdded(self, objpath):
2753
3428
"D-Bus signal"
2754
3429
pass
2755
3430
2756
3431
@dbus.service.signal(_interface, signature="ss")
2757
def ClientNotFound(self, fingerprint, address):
3432
def ClientNotFound(self, key_id, address):
2758
3433
"D-Bus signal"
2759
3434
pass
2760
3435
3436
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3437
"true"})
2761
3438
@dbus.service.signal(_interface, signature="os")
2762
3439
def ClientRemoved(self, objpath, name):
2763
3440
"D-Bus signal"
2764
3441
pass
2765
3442
3443
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3444
"true"})
2766
3445
@dbus.service.method(_interface, out_signature="ao")
2767
3446
def GetAllClients(self):
2768
3447
"D-Bus method"
2769
3448
return dbus.Array(c.dbus_object_path for c in
2770
tcp_server.clients.itervalues())
2771
3449
tcp_server.clients.values())
3450
3451
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3452
"true"})
2772
3453
@dbus.service.method(_interface,
2773
3454
out_signature="a{oa{sv}}")
2774
3455
def GetAllClientsWithProperties(self):
2775
3456
"D-Bus method"
2776
3457
return dbus.Dictionary(
2777
{ c.dbus_object_path: c.GetAll("")
2778
for c in tcp_server.clients.itervalues() },
3458
{c.dbus_object_path: c.GetAll(
3459
"se.recompile.Mandos.Client")
3460
for c in tcp_server.clients.values()},
2779
3461
signature="oa{sv}")
2780
3462
2781
3463
@dbus.service.method(_interface, in_signature="o")
2782
3464
def RemoveClient(self, object_path):
2783
3465
"D-Bus method"
2784
for c in tcp_server.clients.itervalues():
3466
for c in tcp_server.clients.values():
2785
3467
if c.dbus_object_path == object_path:
2786
3468
del tcp_server.clients[c.name]
2787
3469
c.remove_from_connection()
2788
# Don't signal anything except ClientRemoved
3470
# Don't signal the disabling
2789
3471
c.disable(quiet=True)
2790
# Emit D-Bus signal
2791
self.ClientRemoved(object_path, c.name)
3472
# Emit D-Bus signal for removal
3473
self.client_removed_signal(c)
2792
3474
return
2793
3475
raise KeyError(object_path)
2794
3476
2795
3477
del _interface
2796
3478
3479
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3480
out_signature="a{oa{sa{sv}}}")
3481
def GetManagedObjects(self):
3482
"""D-Bus method"""
3483
return dbus.Dictionary(
3484
{client.dbus_object_path:
3485
dbus.Dictionary(
3486
{interface: client.GetAll(interface)
3487
for interface in
3488
client._get_all_interface_names()})
3489
for client in tcp_server.clients.values()})
3490
3491
def client_added_signal(self, client):
3492
"""Send the new standard signal and the old signal"""
3493
if use_dbus:
3494
# New standard signal
3495
self.InterfacesAdded(
3496
client.dbus_object_path,
3497
dbus.Dictionary(
3498
{interface: client.GetAll(interface)
3499
for interface in
3500
client._get_all_interface_names()}))
3501
# Old signal
3502
self.ClientAdded(client.dbus_object_path)
3503
3504
def client_removed_signal(self, client):
3505
"""Send the new standard signal and the old signal"""
3506
if use_dbus:
3507
# New standard signal
3508
self.InterfacesRemoved(
3509
client.dbus_object_path,
3510
client._get_all_interface_names())
3511
# Old signal
3512
self.ClientRemoved(client.dbus_object_path,
3513
client.name)
3514
2797
3515
mandos_dbus_service = MandosDBusService()
2798
3516
3517
# Save modules to variables to exempt the modules from being
3518
# unloaded before the function registered with atexit() is run.
3519
mp = multiprocessing
3520
wn = wnull
3521
2799
3522
def cleanup():
2800
3523
"Cleanup function; run on exit"
2801
3524
if zeroconf:
2802
3525
service.cleanup()
2803
2804
multiprocessing.active_children()
2805
wnull.close()
3526
3527
mp.active_children()
3528
wn.close()
2806
3529
if not (tcp_server.clients or client_settings):
2807
3530
return
2808
3531
2809
3532
# Store client before exiting. Secrets are encrypted with key
2810
3533
# based on what config file has. If config file is
2811
3534
# removed/edited, old secret will thus be unrecovable.
2812
3535
clients = {}
2813
3536
with PGPEngine() as pgp:
2814
for client in tcp_server.clients.itervalues():
3537
for client in tcp_server.clients.values():
2815
3538
key = client_settings[client.name]["secret"]
2816
3539
client.encrypted_secret = pgp.encrypt(client.secret,
2817
3540
key)
2818
3541
client_dict = {}
2819
3542
2820
3543
# A list of attributes that can not be pickled
2821
3544
# + secret.
2822
exclude = { "bus", "changedstate", "secret",
2823
"checker", "server_settings" }
3545
exclude = {"bus", "changedstate", "secret",
3546
"checker", "server_settings"}
2824
3547
for name, typ in inspect.getmembers(dbus.service
2825
3548
.Object):
2826
3549
exclude.add(name)
2827
3550
2828
3551
client_dict["encrypted_secret"] = (client
2829
3552
.encrypted_secret)
2830
3553
for attr in client.client_structure:
2831
3554
if attr not in exclude:
2832
3555
client_dict[attr] = getattr(client, attr)
2833
3556
2834
3557
clients[client.name] = client_dict
2835
3558
del client_settings[client.name]["secret"]
2836
3559
2837
3560
try:
2838
3561
with tempfile.NamedTemporaryFile(
2839
3562
mode='wb',
2841
3564
prefix='clients-',
2842
3565
dir=os.path.dirname(stored_state_path),
2843
3566
delete=False) as stored_state:
2844
pickle.dump((clients, client_settings), stored_state)
3567
pickle.dump((clients, client_settings), stored_state,
3568
protocol=2)
2845
3569
tempname = stored_state.name
2846
3570
os.rename(tempname, stored_state_path)
2847
3571
except (IOError, OSError) as e:
2857
3581
logger.warning("Could not save persistent state:",
2858
3582
exc_info=e)
2859
3583
raise
2860
3584
2861
3585
# Delete all clients, and settings from config
2862
3586
while tcp_server.clients:
2863
3587
name, client = tcp_server.clients.popitem()
2864
3588
if use_dbus:
2865
3589
client.remove_from_connection()
2866
# Don't signal anything except ClientRemoved
3590
# Don't signal the disabling
2867
3591
client.disable(quiet=True)
3592
# Emit D-Bus signal for removal
2868
3593
if use_dbus:
2869
# Emit D-Bus signal
2870
mandos_dbus_service.ClientRemoved(
2871
client.dbus_object_path, client.name)
3594
mandos_dbus_service.client_removed_signal(client)
2872
3595
client_settings.clear()
2873
3596
2874
3597
atexit.register(cleanup)
2875
2876
for client in tcp_server.clients.itervalues():
3598
3599
for client in tcp_server.clients.values():
2877
3600
if use_dbus:
2878
# Emit D-Bus signal
2879
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3601
# Emit D-Bus signal for adding
3602
mandos_dbus_service.client_added_signal(client)
2880
3603
# Need to initiate checking of clients
2881
3604
if client.enabled:
2882
3605
client.init_checker()
2883
3606
2884
3607
tcp_server.enable()
2885
3608
tcp_server.server_activate()
2886
3609
2887
3610
# Find out what port we got
2888
3611
if zeroconf:
2889
3612
service.port = tcp_server.socket.getsockname()[1]
2894
3617
else: # IPv4
2895
3618
logger.info("Now listening on address %r, port %d",
2896
3619
*tcp_server.socket.getsockname())
2897
2898
#service.interface = tcp_server.socket.getsockname()[3]
2899
3620
3621
# service.interface = tcp_server.socket.getsockname()[3]
3622
2900
3623
try:
2901
3624
if zeroconf:
2902
3625
# From the Avahi example code
2907
3630
cleanup()
2908
3631
sys.exit(1)
2909
3632
# End of Avahi example code
2910
2911
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2912
lambda *args, **kwargs:
2913
(tcp_server.handle_request
2914
(*args[2:], **kwargs) or True))
2915
3633
3634
GLib.io_add_watch(
3635
GLib.IOChannel.unix_new(tcp_server.fileno()),
3636
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
3637
lambda *args, **kwargs: (tcp_server.handle_request
3638
(*args[2:], **kwargs) or True))
3639
2916
3640
logger.debug("Starting main loop")
2917
3641
main_loop.run()
2918
3642
except AvahiError as error:
2927
3651
# Must run before the D-Bus bus name gets deregistered
2928
3652
cleanup()
2929
3653
3654
3655
def should_only_run_tests():
3656
parser = argparse.ArgumentParser(add_help=False)
3657
parser.add_argument("--check", action='store_true')
3658
args, unknown_args = parser.parse_known_args()
3659
run_tests = args.check
3660
if run_tests:
3661
# Remove --check argument from sys.argv
3662
sys.argv[1:] = unknown_args
3663
return run_tests
3664
3665
# Add all tests from doctest strings
3666
def load_tests(loader, tests, none):
3667
import doctest
3668
tests.addTests(doctest.DocTestSuite())
3669
return tests
2930
3670
2931
3671
if __name__ == '__main__':
2932
main()
3672
try:
3673
if should_only_run_tests():
3674
# Call using ./mandos --check [--verbose]
3675
unittest.main()
3676
else:
3677
main()
3678
finally:
3679
logging.shutdown()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0