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- Committer: teddy at recompile
- Date: 2020-07-04 08:59:37 UTC
- Revision ID: teddy@recompile.se-20200704085937-r495zb32nfng9lnt
In initramfs-tools boots, only use setsid when available
* initramfs-tools-script: If available, use setsid to start
mandos-to-cryptroot-unlock.
* initramfs-tools-script: If available, use setsid to start
mandos-to-cryptroot-unlock.
- 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 © 2008-2019 Teddy Hogeborn
15
# Copyright © 2008-2019 Björn Påhlsson
16
#
17
# This file is part of Mandos.
18
#
19
# Mandos is free software: you can redistribute it and/or modify it
20
# under the terms of the GNU General Public License as published by
19
21
# the Free Software Foundation, either version 3 of the License, or
20
22
# (at your option) any later version.
21
23
#
22
# This program is distributed in the hope that it will be useful,
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
24
# Mandos is distributed in the hope that it will be useful, but
25
# WITHOUT ANY WARRANTY; without even the implied warranty of
24
26
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25
27
# GNU General Public License for more details.
26
#
28
#
27
29
# You should have received a copy of the GNU General Public License
28
# along with this program. If not, see
29
# <http://www.gnu.org/licenses/>.
30
#
30
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
31
#
31
32
# Contact the authors at <mandos@recompile.se>.
32
#
33
#
33
34
34
35
from __future__ import (division, absolute_import, print_function,
35
36
unicode_literals)
36
37
37
from future_builtins import *
38
try:
39
from future_builtins import *
40
except ImportError:
41
pass
38
42
39
43
try:
40
44
import SocketServer as socketserver
44
48
import argparse
45
49
import datetime
46
50
import errno
47
import gnutls.crypto
48
import gnutls.connection
49
import gnutls.errors
50
import gnutls.library.functions
51
import gnutls.library.constants
52
import gnutls.library.types
53
51
try:
54
52
import ConfigParser as configparser
55
53
except ImportError:
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 = "1.8.11"
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, **kwargs)
433
528
syslogger.setFormatter(logging.Formatter(
434
529
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
435
530
.format(self.name)))
436
531
return ret
437
532
533
534
# Pretend that we have a GnuTLS module
535
class gnutls:
536
"""This isn't so much a class as it is a module-like namespace."""
537
538
library = ctypes.util.find_library("gnutls")
539
if library is None:
540
library = ctypes.util.find_library("gnutls-deb0")
541
_library = ctypes.cdll.LoadLibrary(library)
542
del library
543
544
# Unless otherwise indicated, the constants and types below are
545
# all from the gnutls/gnutls.h C header file.
546
547
# Constants
548
E_SUCCESS = 0
549
E_INTERRUPTED = -52
550
E_AGAIN = -28
551
CRT_OPENPGP = 2
552
CRT_RAWPK = 3
553
CLIENT = 2
554
SHUT_RDWR = 0
555
CRD_CERTIFICATE = 1
556
E_NO_CERTIFICATE_FOUND = -49
557
X509_FMT_DER = 0
558
NO_TICKETS = 1<<10
559
ENABLE_RAWPK = 1<<18
560
CTYPE_PEERS = 3
561
KEYID_USE_SHA256 = 1 # gnutls/x509.h
562
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
563
564
# Types
565
class session_int(ctypes.Structure):
566
_fields_ = []
567
session_t = ctypes.POINTER(session_int)
568
569
class certificate_credentials_st(ctypes.Structure):
570
_fields_ = []
571
certificate_credentials_t = ctypes.POINTER(
572
certificate_credentials_st)
573
certificate_type_t = ctypes.c_int
574
575
class datum_t(ctypes.Structure):
576
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
577
('size', ctypes.c_uint)]
578
579
class openpgp_crt_int(ctypes.Structure):
580
_fields_ = []
581
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
582
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
583
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
584
credentials_type_t = ctypes.c_int
585
transport_ptr_t = ctypes.c_void_p
586
close_request_t = ctypes.c_int
587
588
# Exceptions
589
class Error(Exception):
590
def __init__(self, message=None, code=None, args=()):
591
# Default usage is by a message string, but if a return
592
# code is passed, convert it to a string with
593
# gnutls.strerror()
594
self.code = code
595
if message is None and code is not None:
596
message = gnutls.strerror(code)
597
return super(gnutls.Error, self).__init__(
598
message, *args)
599
600
class CertificateSecurityError(Error):
601
pass
602
603
# Classes
604
class Credentials:
605
def __init__(self):
606
self._c_object = gnutls.certificate_credentials_t()
607
gnutls.certificate_allocate_credentials(
608
ctypes.byref(self._c_object))
609
self.type = gnutls.CRD_CERTIFICATE
610
611
def __del__(self):
612
gnutls.certificate_free_credentials(self._c_object)
613
614
class ClientSession:
615
def __init__(self, socket, credentials=None):
616
self._c_object = gnutls.session_t()
617
gnutls_flags = gnutls.CLIENT
618
if gnutls.check_version(b"3.5.6"):
619
gnutls_flags |= gnutls.NO_TICKETS
620
if gnutls.has_rawpk:
621
gnutls_flags |= gnutls.ENABLE_RAWPK
622
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
623
del gnutls_flags
624
gnutls.set_default_priority(self._c_object)
625
gnutls.transport_set_ptr(self._c_object, socket.fileno())
626
gnutls.handshake_set_private_extensions(self._c_object,
627
True)
628
self.socket = socket
629
if credentials is None:
630
credentials = gnutls.Credentials()
631
gnutls.credentials_set(self._c_object, credentials.type,
632
ctypes.cast(credentials._c_object,
633
ctypes.c_void_p))
634
self.credentials = credentials
635
636
def __del__(self):
637
gnutls.deinit(self._c_object)
638
639
def handshake(self):
640
return gnutls.handshake(self._c_object)
641
642
def send(self, data):
643
data = bytes(data)
644
data_len = len(data)
645
while data_len > 0:
646
data_len -= gnutls.record_send(self._c_object,
647
data[-data_len:],
648
data_len)
649
650
def bye(self):
651
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
652
653
# Error handling functions
654
def _error_code(result):
655
"""A function to raise exceptions on errors, suitable
656
for the 'restype' attribute on ctypes functions"""
657
if result >= 0:
658
return result
659
if result == gnutls.E_NO_CERTIFICATE_FOUND:
660
raise gnutls.CertificateSecurityError(code=result)
661
raise gnutls.Error(code=result)
662
663
def _retry_on_error(result, func, arguments):
664
"""A function to retry on some errors, suitable
665
for the 'errcheck' attribute on ctypes functions"""
666
while result < 0:
667
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
668
return _error_code(result)
669
result = func(*arguments)
670
return result
671
672
# Unless otherwise indicated, the function declarations below are
673
# all from the gnutls/gnutls.h C header file.
674
675
# Functions
676
priority_set_direct = _library.gnutls_priority_set_direct
677
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
678
ctypes.POINTER(ctypes.c_char_p)]
679
priority_set_direct.restype = _error_code
680
681
init = _library.gnutls_init
682
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
683
init.restype = _error_code
684
685
set_default_priority = _library.gnutls_set_default_priority
686
set_default_priority.argtypes = [session_t]
687
set_default_priority.restype = _error_code
688
689
record_send = _library.gnutls_record_send
690
record_send.argtypes = [session_t, ctypes.c_void_p,
691
ctypes.c_size_t]
692
record_send.restype = ctypes.c_ssize_t
693
record_send.errcheck = _retry_on_error
694
695
certificate_allocate_credentials = (
696
_library.gnutls_certificate_allocate_credentials)
697
certificate_allocate_credentials.argtypes = [
698
ctypes.POINTER(certificate_credentials_t)]
699
certificate_allocate_credentials.restype = _error_code
700
701
certificate_free_credentials = (
702
_library.gnutls_certificate_free_credentials)
703
certificate_free_credentials.argtypes = [
704
certificate_credentials_t]
705
certificate_free_credentials.restype = None
706
707
handshake_set_private_extensions = (
708
_library.gnutls_handshake_set_private_extensions)
709
handshake_set_private_extensions.argtypes = [session_t,
710
ctypes.c_int]
711
handshake_set_private_extensions.restype = None
712
713
credentials_set = _library.gnutls_credentials_set
714
credentials_set.argtypes = [session_t, credentials_type_t,
715
ctypes.c_void_p]
716
credentials_set.restype = _error_code
717
718
strerror = _library.gnutls_strerror
719
strerror.argtypes = [ctypes.c_int]
720
strerror.restype = ctypes.c_char_p
721
722
certificate_type_get = _library.gnutls_certificate_type_get
723
certificate_type_get.argtypes = [session_t]
724
certificate_type_get.restype = _error_code
725
726
certificate_get_peers = _library.gnutls_certificate_get_peers
727
certificate_get_peers.argtypes = [session_t,
728
ctypes.POINTER(ctypes.c_uint)]
729
certificate_get_peers.restype = ctypes.POINTER(datum_t)
730
731
global_set_log_level = _library.gnutls_global_set_log_level
732
global_set_log_level.argtypes = [ctypes.c_int]
733
global_set_log_level.restype = None
734
735
global_set_log_function = _library.gnutls_global_set_log_function
736
global_set_log_function.argtypes = [log_func]
737
global_set_log_function.restype = None
738
739
deinit = _library.gnutls_deinit
740
deinit.argtypes = [session_t]
741
deinit.restype = None
742
743
handshake = _library.gnutls_handshake
744
handshake.argtypes = [session_t]
745
handshake.restype = _error_code
746
handshake.errcheck = _retry_on_error
747
748
transport_set_ptr = _library.gnutls_transport_set_ptr
749
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
750
transport_set_ptr.restype = None
751
752
bye = _library.gnutls_bye
753
bye.argtypes = [session_t, close_request_t]
754
bye.restype = _error_code
755
bye.errcheck = _retry_on_error
756
757
check_version = _library.gnutls_check_version
758
check_version.argtypes = [ctypes.c_char_p]
759
check_version.restype = ctypes.c_char_p
760
761
_need_version = b"3.3.0"
762
if check_version(_need_version) is None:
763
raise self.Error("Needs GnuTLS {} or later"
764
.format(_need_version))
765
766
_tls_rawpk_version = b"3.6.6"
767
has_rawpk = bool(check_version(_tls_rawpk_version))
768
769
if has_rawpk:
770
# Types
771
class pubkey_st(ctypes.Structure):
772
_fields = []
773
pubkey_t = ctypes.POINTER(pubkey_st)
774
775
x509_crt_fmt_t = ctypes.c_int
776
777
# All the function declarations below are from gnutls/abstract.h
778
pubkey_init = _library.gnutls_pubkey_init
779
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
780
pubkey_init.restype = _error_code
781
782
pubkey_import = _library.gnutls_pubkey_import
783
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
784
x509_crt_fmt_t]
785
pubkey_import.restype = _error_code
786
787
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
788
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
789
ctypes.POINTER(ctypes.c_ubyte),
790
ctypes.POINTER(ctypes.c_size_t)]
791
pubkey_get_key_id.restype = _error_code
792
793
pubkey_deinit = _library.gnutls_pubkey_deinit
794
pubkey_deinit.argtypes = [pubkey_t]
795
pubkey_deinit.restype = None
796
else:
797
# All the function declarations below are from gnutls/openpgp.h
798
799
openpgp_crt_init = _library.gnutls_openpgp_crt_init
800
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
801
openpgp_crt_init.restype = _error_code
802
803
openpgp_crt_import = _library.gnutls_openpgp_crt_import
804
openpgp_crt_import.argtypes = [openpgp_crt_t,
805
ctypes.POINTER(datum_t),
806
openpgp_crt_fmt_t]
807
openpgp_crt_import.restype = _error_code
808
809
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
810
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
811
ctypes.POINTER(ctypes.c_uint)]
812
openpgp_crt_verify_self.restype = _error_code
813
814
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
815
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
816
openpgp_crt_deinit.restype = None
817
818
openpgp_crt_get_fingerprint = (
819
_library.gnutls_openpgp_crt_get_fingerprint)
820
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
821
ctypes.c_void_p,
822
ctypes.POINTER(
823
ctypes.c_size_t)]
824
openpgp_crt_get_fingerprint.restype = _error_code
825
826
if check_version(b"3.6.4"):
827
certificate_type_get2 = _library.gnutls_certificate_type_get2
828
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
829
certificate_type_get2.restype = _error_code
830
831
# Remove non-public functions
832
del _error_code, _retry_on_error
833
834
438
835
def call_pipe(connection, # : multiprocessing.Connection
439
836
func, *args, **kwargs):
440
837
"""This function is meant to be called by multiprocessing.Process
441
838
442
839
This function runs func(*args, **kwargs), and writes the resulting
443
840
return value on the provided multiprocessing.Connection.
444
841
"""
445
842
connection.send(func(*args, **kwargs))
446
843
connection.close()
447
844
448
class Client(object):
845
846
class Client:
449
847
"""A representation of a client host served by this server.
450
848
451
849
Attributes:
452
850
approved: bool(); 'None' if not yet approved/disapproved
453
851
approval_delay: datetime.timedelta(); Time to wait for approval
454
852
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
853
checker: multiprocessing.Process(); a running checker process used
854
to see if the client lives. 'None' if no process is
855
running.
856
checker_callback_tag: a GLib event source tag, or None
459
857
checker_command: string; External command which is run to check
460
858
if client lives. %() expansions are done at
461
859
runtime with vars(self) as dict, so that for
462
860
instance %(name)s can be used in the command.
463
checker_initiator_tag: a gobject event source tag, or None
861
checker_initiator_tag: a GLib event source tag, or None
464
862
created: datetime.datetime(); (UTC) object creation
465
863
client_structure: Object describing what attributes a client has
466
864
and is used for storing the client at exit
467
865
current_checker_command: string; current running checker_command
468
disable_initiator_tag: a gobject event source tag, or None
866
disable_initiator_tag: a GLib event source tag, or None
469
867
enabled: bool()
470
868
fingerprint: string (40 or 32 hexadecimal digits); used to
471
uniquely identify the client
869
uniquely identify an OpenPGP client
870
key_id: string (64 hexadecimal digits); used to uniquely identify
871
a client using raw public keys
472
872
host: string; available for use by the checker command
473
873
interval: datetime.timedelta(); How often to start a new checker
474
874
last_approval_request: datetime.datetime(); (UTC) or None
490
890
disabled, or None
491
891
server_settings: The server_settings dict from main()
492
892
"""
493
893
494
894
runtime_expansions = ("approval_delay", "approval_duration",
495
"created", "enabled", "expires",
895
"created", "enabled", "expires", "key_id",
496
896
"fingerprint", "host", "interval",
497
897
"last_approval_request", "last_checked_ok",
498
898
"last_enabled", "name", "timeout")
507
907
"approved_by_default": "True",
508
908
"enabled": "True",
509
909
}
510
910
511
911
@staticmethod
512
912
def config_parser(config):
513
913
"""Construct a new dict of client settings of this form:
520
920
for client_name in config.sections():
521
921
section = dict(config.items(client_name))
522
922
client = settings[client_name] = {}
523
923
524
924
client["host"] = section["host"]
525
925
# Reformat values from string types to Python types
526
926
client["approved_by_default"] = config.getboolean(
527
927
client_name, "approved_by_default")
528
928
client["enabled"] = config.getboolean(client_name,
529
929
"enabled")
530
531
# Uppercase and remove spaces from fingerprint for later
532
# comparison purposes with return value from the
533
# fingerprint() function
930
931
# Uppercase and remove spaces from key_id and fingerprint
932
# for later comparison purposes with return value from the
933
# key_id() and fingerprint() functions
934
client["key_id"] = (section.get("key_id", "").upper()
935
.replace(" ", ""))
534
936
client["fingerprint"] = (section["fingerprint"].upper()
535
937
.replace(" ", ""))
536
938
if "secret" in section:
537
client["secret"] = section["secret"].decode("base64")
939
client["secret"] = codecs.decode(section["secret"]
940
.encode("utf-8"),
941
"base64")
538
942
elif "secfile" in section:
539
943
with open(os.path.expanduser(os.path.expandvars
540
944
(section["secfile"])),
555
959
client["last_approval_request"] = None
556
960
client["last_checked_ok"] = None
557
961
client["last_checker_status"] = -2
558
962
559
963
return settings
560
561
def __init__(self, settings, name = None, server_settings=None):
964
965
def __init__(self, settings, name=None, server_settings=None):
562
966
self.name = name
563
967
if server_settings is None:
564
968
server_settings = {}
566
970
# adding all client settings
567
971
for setting, value in settings.items():
568
972
setattr(self, setting, value)
569
973
570
974
if self.enabled:
571
975
if not hasattr(self, "last_enabled"):
572
976
self.last_enabled = datetime.datetime.utcnow()
576
980
else:
577
981
self.last_enabled = None
578
982
self.expires = None
579
983
580
984
logger.debug("Creating client %r", self.name)
985
logger.debug(" Key ID: %s", self.key_id)
581
986
logger.debug(" Fingerprint: %s", self.fingerprint)
582
987
self.created = settings.get("created",
583
988
datetime.datetime.utcnow())
584
989
585
990
# attributes specific for this server instance
586
991
self.checker = None
587
992
self.checker_initiator_tag = None
593
998
self.changedstate = multiprocessing_manager.Condition(
594
999
multiprocessing_manager.Lock())
595
1000
self.client_structure = [attr
596
for attr in self.__dict__.iterkeys()
1001
for attr in self.__dict__.keys()
597
1002
if not attr.startswith("_")]
598
1003
self.client_structure.append("client_structure")
599
1004
600
1005
for name, t in inspect.getmembers(
601
1006
type(self), lambda obj: isinstance(obj, property)):
602
1007
if not name.startswith("_"):
603
1008
self.client_structure.append(name)
604
1009
605
1010
# Send notice to process children that client state has changed
606
1011
def send_changedstate(self):
607
1012
with self.changedstate:
608
1013
self.changedstate.notify_all()
609
1014
610
1015
def enable(self):
611
1016
"""Start this client's checker and timeout hooks"""
612
1017
if getattr(self, "enabled", False):
617
1022
self.last_enabled = datetime.datetime.utcnow()
618
1023
self.init_checker()
619
1024
self.send_changedstate()
620
1025
621
1026
def disable(self, quiet=True):
622
1027
"""Disable this client."""
623
1028
if not getattr(self, "enabled", False):
625
1030
if not quiet:
626
1031
logger.info("Disabling client %s", self.name)
627
1032
if getattr(self, "disable_initiator_tag", None) is not None:
628
gobject.source_remove(self.disable_initiator_tag)
1033
GLib.source_remove(self.disable_initiator_tag)
629
1034
self.disable_initiator_tag = None
630
1035
self.expires = None
631
1036
if getattr(self, "checker_initiator_tag", None) is not None:
632
gobject.source_remove(self.checker_initiator_tag)
1037
GLib.source_remove(self.checker_initiator_tag)
633
1038
self.checker_initiator_tag = None
634
1039
self.stop_checker()
635
1040
self.enabled = False
636
1041
if not quiet:
637
1042
self.send_changedstate()
638
# Do not run this again if called by a gobject.timeout_add
1043
# Do not run this again if called by a GLib.timeout_add
639
1044
return False
640
1045
641
1046
def __del__(self):
642
1047
self.disable()
643
1048
644
1049
def init_checker(self):
645
1050
# Schedule a new checker to be started an 'interval' from now,
646
1051
# and every interval from then on.
647
1052
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),
1053
GLib.source_remove(self.checker_initiator_tag)
1054
self.checker_initiator_tag = GLib.timeout_add(
1055
random.randrange(int(self.interval.total_seconds() * 1000
1056
+ 1)),
651
1057
self.start_checker)
652
1058
# Schedule a disable() when 'timeout' has passed
653
1059
if self.disable_initiator_tag is not None:
654
gobject.source_remove(self.disable_initiator_tag)
655
self.disable_initiator_tag = gobject.timeout_add(
1060
GLib.source_remove(self.disable_initiator_tag)
1061
self.disable_initiator_tag = GLib.timeout_add(
656
1062
int(self.timeout.total_seconds() * 1000), self.disable)
657
1063
# Also start a new checker *right now*.
658
1064
self.start_checker()
659
1065
660
1066
def checker_callback(self, source, condition, connection,
661
1067
command):
662
1068
"""The checker has completed, so take appropriate actions."""
663
self.checker_callback_tag = None
664
self.checker = None
665
1069
# Read return code from connection (see call_pipe)
666
1070
returncode = connection.recv()
667
1071
connection.close()
668
1072
if self.checker is not None:
1073
self.checker.join()
1074
self.checker_callback_tag = None
1075
self.checker = None
1076
669
1077
if returncode >= 0:
670
1078
self.last_checker_status = returncode
671
1079
self.last_checker_signal = None
681
1089
logger.warning("Checker for %(name)s crashed?",
682
1090
vars(self))
683
1091
return False
684
1092
685
1093
def checked_ok(self):
686
1094
"""Assert that the client has been seen, alive and well."""
687
1095
self.last_checked_ok = datetime.datetime.utcnow()
688
1096
self.last_checker_status = 0
689
1097
self.last_checker_signal = None
690
1098
self.bump_timeout()
691
1099
692
1100
def bump_timeout(self, timeout=None):
693
1101
"""Bump up the timeout for this client."""
694
1102
if timeout is None:
695
1103
timeout = self.timeout
696
1104
if self.disable_initiator_tag is not None:
697
gobject.source_remove(self.disable_initiator_tag)
1105
GLib.source_remove(self.disable_initiator_tag)
698
1106
self.disable_initiator_tag = None
699
1107
if getattr(self, "enabled", False):
700
self.disable_initiator_tag = gobject.timeout_add(
1108
self.disable_initiator_tag = GLib.timeout_add(
701
1109
int(timeout.total_seconds() * 1000), self.disable)
702
1110
self.expires = datetime.datetime.utcnow() + timeout
703
1111
704
1112
def need_approval(self):
705
1113
self.last_approval_request = datetime.datetime.utcnow()
706
1114
707
1115
def start_checker(self):
708
1116
"""Start a new checker subprocess if one is not running.
709
1117
710
1118
If a checker already exists, leave it running and do
711
1119
nothing."""
712
1120
# The reason for not killing a running checker is that if we
717
1125
# checkers alone, the checker would have to take more time
718
1126
# than 'timeout' for the client to be disabled, which is as it
719
1127
# should be.
720
1128
721
1129
if self.checker is not None and not self.checker.is_alive():
722
1130
logger.warning("Checker was not alive; joining")
723
1131
self.checker.join()
726
1134
if self.checker is None:
727
1135
# Escape attributes for the shell
728
1136
escaped_attrs = {
729
attr: re.escape(str(getattr(self, attr)))
730
for attr in self.runtime_expansions }
1137
attr: shlex.quote(str(getattr(self, attr)))
1138
for attr in self.runtime_expansions}
731
1139
try:
732
1140
command = self.checker_command % escaped_attrs
733
1141
except TypeError as error:
745
1153
# The exception is when not debugging but nevertheless
746
1154
# running in the foreground; use the previously
747
1155
# created wnull.
748
popen_args = { "close_fds": True,
749
"shell": True,
750
"cwd": "/" }
1156
popen_args = {"close_fds": True,
1157
"shell": True,
1158
"cwd": "/"}
751
1159
if (not self.server_settings["debug"]
752
1160
and self.server_settings["foreground"]):
753
1161
popen_args.update({"stdout": wnull,
754
"stderr": wnull })
755
pipe = multiprocessing.Pipe(duplex = False)
1162
"stderr": wnull})
1163
pipe = multiprocessing.Pipe(duplex=False)
756
1164
self.checker = multiprocessing.Process(
757
target = call_pipe,
758
args = (pipe[1], subprocess.call, command),
759
kwargs = popen_args)
1165
target=call_pipe,
1166
args=(pipe[1], subprocess.call, command),
1167
kwargs=popen_args)
760
1168
self.checker.start()
761
self.checker_callback_tag = gobject.io_add_watch(
762
pipe[0].fileno(), gobject.IO_IN,
1169
self.checker_callback_tag = GLib.io_add_watch(
1170
GLib.IOChannel.unix_new(pipe[0].fileno()),
1171
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
763
1172
self.checker_callback, pipe[0], command)
764
# Re-run this periodically if run by gobject.timeout_add
1173
# Re-run this periodically if run by GLib.timeout_add
765
1174
return True
766
1175
767
1176
def stop_checker(self):
768
1177
"""Force the checker process, if any, to stop."""
769
1178
if self.checker_callback_tag:
770
gobject.source_remove(self.checker_callback_tag)
1179
GLib.source_remove(self.checker_callback_tag)
771
1180
self.checker_callback_tag = None
772
1181
if getattr(self, "checker", None) is None:
773
1182
return
782
1191
byte_arrays=False):
783
1192
"""Decorators for marking methods of a DBusObjectWithProperties to
784
1193
become properties on the D-Bus.
785
1194
786
1195
The decorated method will be called with no arguments by "Get"
787
1196
and with one argument by "Set".
788
1197
789
1198
The parameters, where they are supported, are the same as
790
1199
dbus.service.method, except there is only "signature", since the
791
1200
type from Get() and the type sent to Set() is the same.
795
1204
if byte_arrays and signature != "ay":
796
1205
raise ValueError("Byte arrays not supported for non-'ay'"
797
1206
" signature {!r}".format(signature))
798
1207
799
1208
def decorator(func):
800
1209
func._dbus_is_property = True
801
1210
func._dbus_interface = dbus_interface
804
1213
func._dbus_name = func.__name__
805
1214
if func._dbus_name.endswith("_dbus_property"):
806
1215
func._dbus_name = func._dbus_name[:-14]
807
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
1216
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
808
1217
return func
809
1218
810
1219
return decorator
811
1220
812
1221
813
1222
def dbus_interface_annotations(dbus_interface):
814
1223
"""Decorator for marking functions returning interface annotations
815
1224
816
1225
Usage:
817
1226
818
1227
@dbus_interface_annotations("org.example.Interface")
819
1228
def _foo(self): # Function name does not matter
820
1229
return {"org.freedesktop.DBus.Deprecated": "true",
821
1230
"org.freedesktop.DBus.Property.EmitsChangedSignal":
822
1231
"false"}
823
1232
"""
824
1233
825
1234
def decorator(func):
826
1235
func._dbus_is_interface = True
827
1236
func._dbus_interface = dbus_interface
828
1237
func._dbus_name = dbus_interface
829
1238
return func
830
1239
831
1240
return decorator
832
1241
833
1242
834
1243
def dbus_annotations(annotations):
835
1244
"""Decorator to annotate D-Bus methods, signals or properties
836
1245
Usage:
837
1246
838
1247
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
839
1248
"org.freedesktop.DBus.Property."
840
1249
"EmitsChangedSignal": "false"})
842
1251
access="r")
843
1252
def Property_dbus_property(self):
844
1253
return dbus.Boolean(False)
1254
1255
See also the DBusObjectWithAnnotations class.
845
1256
"""
846
1257
847
1258
def decorator(func):
848
1259
func._dbus_annotations = annotations
849
1260
return func
850
1261
851
1262
return decorator
852
1263
853
1264
869
1280
pass
870
1281
871
1282
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.
1283
class DBusObjectWithAnnotations(dbus.service.Object):
1284
"""A D-Bus object with annotations.
1285
1286
Classes inheriting from this can use the dbus_annotations
1287
decorator to add annotations to methods or signals.
878
1288
"""
879
1289
880
1290
@staticmethod
881
1291
def _is_dbus_thing(thing):
882
1292
"""Returns a function testing if an attribute is a D-Bus thing
883
1293
884
1294
If called like _is_dbus_thing("method") it returns a function
885
1295
suitable for use as predicate to inspect.getmembers().
886
1296
"""
887
1297
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
888
1298
False)
889
1299
890
1300
def _get_all_dbus_things(self, thing):
891
1301
"""Returns a generator of (name, attribute) pairs
892
1302
"""
895
1305
for cls in self.__class__.__mro__
896
1306
for name, athing in
897
1307
inspect.getmembers(cls, self._is_dbus_thing(thing)))
898
1308
1309
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1310
out_signature="s",
1311
path_keyword='object_path',
1312
connection_keyword='connection')
1313
def Introspect(self, object_path, connection):
1314
"""Overloading of standard D-Bus method.
1315
1316
Inserts annotation tags on methods and signals.
1317
"""
1318
xmlstring = dbus.service.Object.Introspect(self, object_path,
1319
connection)
1320
try:
1321
document = xml.dom.minidom.parseString(xmlstring)
1322
1323
for if_tag in document.getElementsByTagName("interface"):
1324
# Add annotation tags
1325
for typ in ("method", "signal"):
1326
for tag in if_tag.getElementsByTagName(typ):
1327
annots = dict()
1328
for name, prop in (self.
1329
_get_all_dbus_things(typ)):
1330
if (name == tag.getAttribute("name")
1331
and prop._dbus_interface
1332
== if_tag.getAttribute("name")):
1333
annots.update(getattr(
1334
prop, "_dbus_annotations", {}))
1335
for name, value in annots.items():
1336
ann_tag = document.createElement(
1337
"annotation")
1338
ann_tag.setAttribute("name", name)
1339
ann_tag.setAttribute("value", value)
1340
tag.appendChild(ann_tag)
1341
# Add interface annotation tags
1342
for annotation, value in dict(
1343
itertools.chain.from_iterable(
1344
annotations().items()
1345
for name, annotations
1346
in self._get_all_dbus_things("interface")
1347
if name == if_tag.getAttribute("name")
1348
)).items():
1349
ann_tag = document.createElement("annotation")
1350
ann_tag.setAttribute("name", annotation)
1351
ann_tag.setAttribute("value", value)
1352
if_tag.appendChild(ann_tag)
1353
# Fix argument name for the Introspect method itself
1354
if (if_tag.getAttribute("name")
1355
== dbus.INTROSPECTABLE_IFACE):
1356
for cn in if_tag.getElementsByTagName("method"):
1357
if cn.getAttribute("name") == "Introspect":
1358
for arg in cn.getElementsByTagName("arg"):
1359
if (arg.getAttribute("direction")
1360
== "out"):
1361
arg.setAttribute("name",
1362
"xml_data")
1363
xmlstring = document.toxml("utf-8")
1364
document.unlink()
1365
except (AttributeError, xml.dom.DOMException,
1366
xml.parsers.expat.ExpatError) as error:
1367
logger.error("Failed to override Introspection method",
1368
exc_info=error)
1369
return xmlstring
1370
1371
1372
class DBusObjectWithProperties(DBusObjectWithAnnotations):
1373
"""A D-Bus object with properties.
1374
1375
Classes inheriting from this can use the dbus_service_property
1376
decorator to expose methods as D-Bus properties. It exposes the
1377
standard Get(), Set(), and GetAll() methods on the D-Bus.
1378
"""
1379
899
1380
def _get_dbus_property(self, interface_name, property_name):
900
1381
"""Returns a bound method if one exists which is a D-Bus
901
1382
property with the specified name and interface.
906
1387
if (value._dbus_name == property_name
907
1388
and value._dbus_interface == interface_name):
908
1389
return value.__get__(self)
909
1390
910
1391
# No such property
911
1392
raise DBusPropertyNotFound("{}:{}.{}".format(
912
1393
self.dbus_object_path, interface_name, property_name))
913
1394
1395
@classmethod
1396
def _get_all_interface_names(cls):
1397
"""Get a sequence of all interfaces supported by an object"""
1398
return (name for name in set(getattr(getattr(x, attr),
1399
"_dbus_interface", None)
1400
for x in (inspect.getmro(cls))
1401
for attr in dir(x))
1402
if name is not None)
1403
914
1404
@dbus.service.method(dbus.PROPERTIES_IFACE,
915
1405
in_signature="ss",
916
1406
out_signature="v")
924
1414
if not hasattr(value, "variant_level"):
925
1415
return value
926
1416
return type(value)(value, variant_level=value.variant_level+1)
927
1417
928
1418
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
929
1419
def Set(self, interface_name, property_name, value):
930
1420
"""Standard D-Bus property Set() method, see D-Bus standard.
939
1429
raise ValueError("Byte arrays not supported for non-"
940
1430
"'ay' signature {!r}"
941
1431
.format(prop._dbus_signature))
942
value = dbus.ByteArray(b''.join(chr(byte)
943
for byte in value))
1432
value = dbus.ByteArray(bytes(value))
944
1433
prop(value)
945
1434
946
1435
@dbus.service.method(dbus.PROPERTIES_IFACE,
947
1436
in_signature="s",
948
1437
out_signature="a{sv}")
949
1438
def GetAll(self, interface_name):
950
1439
"""Standard D-Bus property GetAll() method, see D-Bus
951
1440
standard.
952
1441
953
1442
Note: Will not include properties with access="write".
954
1443
"""
955
1444
properties = {}
966
1455
properties[name] = value
967
1456
continue
968
1457
properties[name] = type(value)(
969
value, variant_level = value.variant_level + 1)
1458
value, variant_level=value.variant_level + 1)
970
1459
return dbus.Dictionary(properties, signature="sv")
971
1460
972
1461
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
973
1462
def PropertiesChanged(self, interface_name, changed_properties,
974
1463
invalidated_properties):
976
1465
standard.
977
1466
"""
978
1467
pass
979
1468
980
1469
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
981
1470
out_signature="s",
982
1471
path_keyword='object_path',
983
1472
connection_keyword='connection')
984
1473
def Introspect(self, object_path, connection):
985
1474
"""Overloading of standard D-Bus method.
986
1475
987
1476
Inserts property tags and interface annotation tags.
988
1477
"""
989
xmlstring = dbus.service.Object.Introspect(self, object_path,
990
connection)
1478
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1479
object_path,
1480
connection)
991
1481
try:
992
1482
document = xml.dom.minidom.parseString(xmlstring)
993
1483
994
1484
def make_tag(document, name, prop):
995
1485
e = document.createElement("property")
996
1486
e.setAttribute("name", name)
997
1487
e.setAttribute("type", prop._dbus_signature)
998
1488
e.setAttribute("access", prop._dbus_access)
999
1489
return e
1000
1490
1001
1491
for if_tag in document.getElementsByTagName("interface"):
1002
1492
# Add property tags
1003
1493
for tag in (make_tag(document, name, prop)
1006
1496
if prop._dbus_interface
1007
1497
== if_tag.getAttribute("name")):
1008
1498
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)
1499
# Add annotation tags for properties
1500
for tag in if_tag.getElementsByTagName("property"):
1501
annots = dict()
1502
for name, prop in self._get_all_dbus_things(
1503
"property"):
1504
if (name == tag.getAttribute("name")
1505
and prop._dbus_interface
1506
== if_tag.getAttribute("name")):
1507
annots.update(getattr(
1508
prop, "_dbus_annotations", {}))
1509
for name, value in annots.items():
1510
ann_tag = document.createElement(
1511
"annotation")
1512
ann_tag.setAttribute("name", name)
1513
ann_tag.setAttribute("value", value)
1514
tag.appendChild(ann_tag)
1038
1515
# Add the names to the return values for the
1039
1516
# "org.freedesktop.DBus.Properties" methods
1040
1517
if (if_tag.getAttribute("name")
1059
1536
return xmlstring
1060
1537
1061
1538
1539
try:
1540
dbus.OBJECT_MANAGER_IFACE
1541
except AttributeError:
1542
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1543
1544
1545
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1546
"""A D-Bus object with an ObjectManager.
1547
1548
Classes inheriting from this exposes the standard
1549
GetManagedObjects call and the InterfacesAdded and
1550
InterfacesRemoved signals on the standard
1551
"org.freedesktop.DBus.ObjectManager" interface.
1552
1553
Note: No signals are sent automatically; they must be sent
1554
manually.
1555
"""
1556
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1557
out_signature="a{oa{sa{sv}}}")
1558
def GetManagedObjects(self):
1559
"""This function must be overridden"""
1560
raise NotImplementedError()
1561
1562
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1563
signature="oa{sa{sv}}")
1564
def InterfacesAdded(self, object_path, interfaces_and_properties):
1565
pass
1566
1567
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1568
def InterfacesRemoved(self, object_path, interfaces):
1569
pass
1570
1571
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1572
out_signature="s",
1573
path_keyword='object_path',
1574
connection_keyword='connection')
1575
def Introspect(self, object_path, connection):
1576
"""Overloading of standard D-Bus method.
1577
1578
Override return argument name of GetManagedObjects to be
1579
"objpath_interfaces_and_properties"
1580
"""
1581
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1582
object_path,
1583
connection)
1584
try:
1585
document = xml.dom.minidom.parseString(xmlstring)
1586
1587
for if_tag in document.getElementsByTagName("interface"):
1588
# Fix argument name for the GetManagedObjects method
1589
if (if_tag.getAttribute("name")
1590
== dbus.OBJECT_MANAGER_IFACE):
1591
for cn in if_tag.getElementsByTagName("method"):
1592
if (cn.getAttribute("name")
1593
== "GetManagedObjects"):
1594
for arg in cn.getElementsByTagName("arg"):
1595
if (arg.getAttribute("direction")
1596
== "out"):
1597
arg.setAttribute(
1598
"name",
1599
"objpath_interfaces"
1600
"_and_properties")
1601
xmlstring = document.toxml("utf-8")
1602
document.unlink()
1603
except (AttributeError, xml.dom.DOMException,
1604
xml.parsers.expat.ExpatError) as error:
1605
logger.error("Failed to override Introspection method",
1606
exc_info=error)
1607
return xmlstring
1608
1609
1062
1610
def datetime_to_dbus(dt, variant_level=0):
1063
1611
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1064
1612
if dt is None:
1065
return dbus.String("", variant_level = variant_level)
1613
return dbus.String("", variant_level=variant_level)
1066
1614
return dbus.String(dt.isoformat(), variant_level=variant_level)
1067
1615
1068
1616
1071
1619
dbus.service.Object, it will add alternate D-Bus attributes with
1072
1620
interface names according to the "alt_interface_names" mapping.
1073
1621
Usage:
1074
1622
1075
1623
@alternate_dbus_interfaces({"org.example.Interface":
1076
1624
"net.example.AlternateInterface"})
1077
1625
class SampleDBusObject(dbus.service.Object):
1078
1626
@dbus.service.method("org.example.Interface")
1079
1627
def SampleDBusMethod():
1080
1628
pass
1081
1629
1082
1630
The above "SampleDBusMethod" on "SampleDBusObject" will be
1083
1631
reachable via two interfaces: "org.example.Interface" and
1084
1632
"net.example.AlternateInterface", the latter of which will have
1085
1633
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1086
1634
"true", unless "deprecate" is passed with a False value.
1087
1635
1088
1636
This works for methods and signals, and also for D-Bus properties
1089
1637
(from DBusObjectWithProperties) and interfaces (from the
1090
1638
dbus_interface_annotations decorator).
1091
1639
"""
1092
1640
1093
1641
def wrapper(cls):
1094
1642
for orig_interface_name, alt_interface_name in (
1095
1643
alt_interface_names.items()):
1110
1658
interface_names.add(alt_interface)
1111
1659
# Is this a D-Bus signal?
1112
1660
if getattr(attribute, "_dbus_is_signal", False):
1661
# Extract the original non-method undecorated
1662
# function by black magic
1113
1663
if sys.version_info.major == 2:
1114
# Extract the original non-method undecorated
1115
# function by black magic
1116
1664
nonmethod_func = (dict(
1117
1665
zip(attribute.func_code.co_freevars,
1118
1666
attribute.__closure__))
1119
1667
["func"].cell_contents)
1120
1668
else:
1121
nonmethod_func = attribute
1669
nonmethod_func = (dict(
1670
zip(attribute.__code__.co_freevars,
1671
attribute.__closure__))
1672
["func"].cell_contents)
1122
1673
# Create a new, but exactly alike, function
1123
1674
# object, and decorate it to be a new D-Bus signal
1124
1675
# 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__)
1676
new_function = copy_function(nonmethod_func)
1139
1677
new_function = (dbus.service.signal(
1140
1678
alt_interface,
1141
1679
attribute._dbus_signature)(new_function))
1145
1683
attribute._dbus_annotations)
1146
1684
except AttributeError:
1147
1685
pass
1686
1148
1687
# Define a creator of a function to call both the
1149
1688
# original and alternate functions, so both the
1150
1689
# original and alternate signals gets sent when
1153
1692
"""This function is a scope container to pass
1154
1693
func1 and func2 to the "call_both" function
1155
1694
outside of its arguments"""
1156
1695
1696
@functools.wraps(func2)
1157
1697
def call_both(*args, **kwargs):
1158
1698
"""This function will emit two D-Bus
1159
1699
signals by calling func1 and func2"""
1160
1700
func1(*args, **kwargs)
1161
1701
func2(*args, **kwargs)
1162
1702
# Make wrapper function look like a D-Bus
1703
# signal
1704
for name, attr in inspect.getmembers(func2):
1705
if name.startswith("_dbus_"):
1706
setattr(call_both, name, attr)
1707
1163
1708
return call_both
1164
1709
# Create the "call_both" function and add it to
1165
1710
# the class
1175
1720
alt_interface,
1176
1721
attribute._dbus_in_signature,
1177
1722
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)))
1723
(copy_function(attribute)))
1183
1724
# Copy annotations, if any
1184
1725
try:
1185
1726
attr[attrname]._dbus_annotations = dict(
1197
1738
attribute._dbus_access,
1198
1739
attribute._dbus_get_args_options
1199
1740
["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)))
1741
(copy_function(attribute)))
1206
1742
# Copy annotations, if any
1207
1743
try:
1208
1744
attr[attrname]._dbus_annotations = dict(
1217
1753
# to the class.
1218
1754
attr[attrname] = (
1219
1755
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)))
1756
(copy_function(attribute)))
1225
1757
if deprecate:
1226
1758
# Deprecate all alternate interfaces
1227
iname="_AlternateDBusNames_interface_annotation{}"
1759
iname = "_AlternateDBusNames_interface_annotation{}"
1228
1760
for interface_name in interface_names:
1229
1761
1230
1762
@dbus_interface_annotations(interface_name)
1231
1763
def func(self):
1232
return { "org.freedesktop.DBus.Deprecated":
1233
"true" }
1764
return {"org.freedesktop.DBus.Deprecated":
1765
"true"}
1234
1766
# Find an unused name
1235
1767
for aname in (iname.format(i)
1236
1768
for i in itertools.count()):
1240
1772
if interface_names:
1241
1773
# Replace the class with a new subclass of it with
1242
1774
# methods, signals, etc. as created above.
1243
cls = type(b"{}Alternate".format(cls.__name__),
1244
(cls, ), attr)
1775
if sys.version_info.major == 2:
1776
cls = type(b"{}Alternate".format(cls.__name__),
1777
(cls, ), attr)
1778
else:
1779
cls = type("{}Alternate".format(cls.__name__),
1780
(cls, ), attr)
1245
1781
return cls
1246
1782
1247
1783
return wrapper
1248
1784
1249
1785
1251
1787
"se.bsnet.fukt.Mandos"})
1252
1788
class ClientDBus(Client, DBusObjectWithProperties):
1253
1789
"""A Client class using D-Bus
1254
1790
1255
1791
Attributes:
1256
1792
dbus_object_path: dbus.ObjectPath
1257
1793
bus: dbus.SystemBus()
1258
1794
"""
1259
1795
1260
1796
runtime_expansions = (Client.runtime_expansions
1261
1797
+ ("dbus_object_path", ))
1262
1798
1263
1799
_interface = "se.recompile.Mandos.Client"
1264
1800
1265
1801
# dbus.service.Object doesn't use super(), so we can't either.
1266
1267
def __init__(self, bus = None, *args, **kwargs):
1802
1803
def __init__(self, bus=None, *args, **kwargs):
1268
1804
self.bus = bus
1269
1805
Client.__init__(self, *args, **kwargs)
1270
1806
# Only now, when this client is initialized, can it show up on
1276
1812
"/clients/" + client_object_name)
1277
1813
DBusObjectWithProperties.__init__(self, self.bus,
1278
1814
self.dbus_object_path)
1279
1815
1280
1816
def notifychangeproperty(transform_func, dbus_name,
1281
1817
type_func=lambda x: x,
1282
1818
variant_level=1,
1284
1820
_interface=_interface):
1285
1821
""" Modify a variable so that it's a property which announces
1286
1822
its changes to DBus.
1287
1823
1288
1824
transform_fun: Function that takes a value and a variant_level
1289
1825
and transforms it to a D-Bus type.
1290
1826
dbus_name: D-Bus name of the variable
1293
1829
variant_level: D-Bus variant level. Default: 1
1294
1830
"""
1295
1831
attrname = "_{}".format(dbus_name)
1296
1832
1297
1833
def setter(self, value):
1298
1834
if hasattr(self, "dbus_object_path"):
1299
1835
if (not hasattr(self, attrname) or
1306
1842
else:
1307
1843
dbus_value = transform_func(
1308
1844
type_func(value),
1309
variant_level = variant_level)
1845
variant_level=variant_level)
1310
1846
self.PropertyChanged(dbus.String(dbus_name),
1311
1847
dbus_value)
1312
1848
self.PropertiesChanged(
1313
1849
_interface,
1314
dbus.Dictionary({ dbus.String(dbus_name):
1315
dbus_value }),
1850
dbus.Dictionary({dbus.String(dbus_name):
1851
dbus_value}),
1316
1852
dbus.Array())
1317
1853
setattr(self, attrname, value)
1318
1854
1319
1855
return property(lambda self: getattr(self, attrname), setter)
1320
1856
1321
1857
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1322
1858
approvals_pending = notifychangeproperty(dbus.Boolean,
1323
1859
"ApprovalPending",
1324
type_func = bool)
1860
type_func=bool)
1325
1861
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1326
1862
last_enabled = notifychangeproperty(datetime_to_dbus,
1327
1863
"LastEnabled")
1328
1864
checker = notifychangeproperty(
1329
1865
dbus.Boolean, "CheckerRunning",
1330
type_func = lambda checker: checker is not None)
1866
type_func=lambda checker: checker is not None)
1331
1867
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1332
1868
"LastCheckedOK")
1333
1869
last_checker_status = notifychangeproperty(dbus.Int16,
1338
1874
"ApprovedByDefault")
1339
1875
approval_delay = notifychangeproperty(
1340
1876
dbus.UInt64, "ApprovalDelay",
1341
type_func = lambda td: td.total_seconds() * 1000)
1877
type_func=lambda td: td.total_seconds() * 1000)
1342
1878
approval_duration = notifychangeproperty(
1343
1879
dbus.UInt64, "ApprovalDuration",
1344
type_func = lambda td: td.total_seconds() * 1000)
1880
type_func=lambda td: td.total_seconds() * 1000)
1345
1881
host = notifychangeproperty(dbus.String, "Host")
1346
1882
timeout = notifychangeproperty(
1347
1883
dbus.UInt64, "Timeout",
1348
type_func = lambda td: td.total_seconds() * 1000)
1884
type_func=lambda td: td.total_seconds() * 1000)
1349
1885
extended_timeout = notifychangeproperty(
1350
1886
dbus.UInt64, "ExtendedTimeout",
1351
type_func = lambda td: td.total_seconds() * 1000)
1887
type_func=lambda td: td.total_seconds() * 1000)
1352
1888
interval = notifychangeproperty(
1353
1889
dbus.UInt64, "Interval",
1354
type_func = lambda td: td.total_seconds() * 1000)
1890
type_func=lambda td: td.total_seconds() * 1000)
1355
1891
checker_command = notifychangeproperty(dbus.String, "Checker")
1356
1892
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1357
1893
invalidate_only=True)
1358
1894
1359
1895
del notifychangeproperty
1360
1896
1361
1897
def __del__(self, *args, **kwargs):
1362
1898
try:
1363
1899
self.remove_from_connection()
1366
1902
if hasattr(DBusObjectWithProperties, "__del__"):
1367
1903
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1368
1904
Client.__del__(self, *args, **kwargs)
1369
1905
1370
1906
def checker_callback(self, source, condition,
1371
1907
connection, command, *args, **kwargs):
1372
1908
ret = Client.checker_callback(self, source, condition,
1376
1912
if exitstatus >= 0:
1377
1913
# Emit D-Bus signal
1378
1914
self.CheckerCompleted(dbus.Int16(exitstatus),
1379
dbus.Int64(0),
1915
# This is specific to GNU libC
1916
dbus.Int64(exitstatus << 8),
1380
1917
dbus.String(command))
1381
1918
else:
1382
1919
# Emit D-Bus signal
1383
1920
self.CheckerCompleted(dbus.Int16(-1),
1384
1921
dbus.Int64(
1385
self.last_checker_signal),
1922
# This is specific to GNU libC
1923
(exitstatus << 8)
1924
| self.last_checker_signal),
1386
1925
dbus.String(command))
1387
1926
return ret
1388
1927
1389
1928
def start_checker(self, *args, **kwargs):
1390
1929
old_checker_pid = getattr(self.checker, "pid", None)
1391
1930
r = Client.start_checker(self, *args, **kwargs)
1395
1934
# Emit D-Bus signal
1396
1935
self.CheckerStarted(self.current_checker_command)
1397
1936
return r
1398
1937
1399
1938
def _reset_approved(self):
1400
1939
self.approved = None
1401
1940
return False
1402
1941
1403
1942
def approve(self, value=True):
1404
1943
self.approved = value
1405
gobject.timeout_add(int(self.approval_duration.total_seconds()
1406
* 1000), self._reset_approved)
1944
GLib.timeout_add(int(self.approval_duration.total_seconds()
1945
* 1000), self._reset_approved)
1407
1946
self.send_changedstate()
1408
1409
## D-Bus methods, signals & properties
1410
1411
## Interfaces
1412
1413
## Signals
1414
1947
1948
# D-Bus methods, signals & properties
1949
1950
# Interfaces
1951
1952
# Signals
1953
1415
1954
# CheckerCompleted - signal
1416
1955
@dbus.service.signal(_interface, signature="nxs")
1417
1956
def CheckerCompleted(self, exitcode, waitstatus, command):
1418
1957
"D-Bus signal"
1419
1958
pass
1420
1959
1421
1960
# CheckerStarted - signal
1422
1961
@dbus.service.signal(_interface, signature="s")
1423
1962
def CheckerStarted(self, command):
1424
1963
"D-Bus signal"
1425
1964
pass
1426
1965
1427
1966
# PropertyChanged - signal
1428
1967
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1429
1968
@dbus.service.signal(_interface, signature="sv")
1430
1969
def PropertyChanged(self, property, value):
1431
1970
"D-Bus signal"
1432
1971
pass
1433
1972
1434
1973
# GotSecret - signal
1435
1974
@dbus.service.signal(_interface)
1436
1975
def GotSecret(self):
1439
1978
server to mandos-client
1440
1979
"""
1441
1980
pass
1442
1981
1443
1982
# Rejected - signal
1444
1983
@dbus.service.signal(_interface, signature="s")
1445
1984
def Rejected(self, reason):
1446
1985
"D-Bus signal"
1447
1986
pass
1448
1987
1449
1988
# NeedApproval - signal
1450
1989
@dbus.service.signal(_interface, signature="tb")
1451
1990
def NeedApproval(self, timeout, default):
1452
1991
"D-Bus signal"
1453
1992
return self.need_approval()
1454
1455
## Methods
1456
1993
1994
# Methods
1995
1457
1996
# Approve - method
1458
1997
@dbus.service.method(_interface, in_signature="b")
1459
1998
def Approve(self, value):
1460
1999
self.approve(value)
1461
2000
1462
2001
# CheckedOK - method
1463
2002
@dbus.service.method(_interface)
1464
2003
def CheckedOK(self):
1465
2004
self.checked_ok()
1466
2005
1467
2006
# Enable - method
2007
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1468
2008
@dbus.service.method(_interface)
1469
2009
def Enable(self):
1470
2010
"D-Bus method"
1471
2011
self.enable()
1472
2012
1473
2013
# StartChecker - method
2014
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1474
2015
@dbus.service.method(_interface)
1475
2016
def StartChecker(self):
1476
2017
"D-Bus method"
1477
2018
self.start_checker()
1478
2019
1479
2020
# Disable - method
2021
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1480
2022
@dbus.service.method(_interface)
1481
2023
def Disable(self):
1482
2024
"D-Bus method"
1483
2025
self.disable()
1484
2026
1485
2027
# StopChecker - method
2028
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1486
2029
@dbus.service.method(_interface)
1487
2030
def StopChecker(self):
1488
2031
self.stop_checker()
1489
1490
## Properties
1491
2032
2033
# Properties
2034
1492
2035
# ApprovalPending - property
1493
2036
@dbus_service_property(_interface, signature="b", access="read")
1494
2037
def ApprovalPending_dbus_property(self):
1495
2038
return dbus.Boolean(bool(self.approvals_pending))
1496
2039
1497
2040
# ApprovedByDefault - property
1498
2041
@dbus_service_property(_interface,
1499
2042
signature="b",
1502
2045
if value is None: # get
1503
2046
return dbus.Boolean(self.approved_by_default)
1504
2047
self.approved_by_default = bool(value)
1505
2048
1506
2049
# ApprovalDelay - property
1507
2050
@dbus_service_property(_interface,
1508
2051
signature="t",
1512
2055
return dbus.UInt64(self.approval_delay.total_seconds()
1513
2056
* 1000)
1514
2057
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1515
2058
1516
2059
# ApprovalDuration - property
1517
2060
@dbus_service_property(_interface,
1518
2061
signature="t",
1522
2065
return dbus.UInt64(self.approval_duration.total_seconds()
1523
2066
* 1000)
1524
2067
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1525
2068
1526
2069
# Name - property
2070
@dbus_annotations(
2071
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1527
2072
@dbus_service_property(_interface, signature="s", access="read")
1528
2073
def Name_dbus_property(self):
1529
2074
return dbus.String(self.name)
1530
2075
2076
# KeyID - property
2077
@dbus_annotations(
2078
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2079
@dbus_service_property(_interface, signature="s", access="read")
2080
def KeyID_dbus_property(self):
2081
return dbus.String(self.key_id)
2082
1531
2083
# Fingerprint - property
2084
@dbus_annotations(
2085
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1532
2086
@dbus_service_property(_interface, signature="s", access="read")
1533
2087
def Fingerprint_dbus_property(self):
1534
2088
return dbus.String(self.fingerprint)
1535
2089
1536
2090
# Host - property
1537
2091
@dbus_service_property(_interface,
1538
2092
signature="s",
1541
2095
if value is None: # get
1542
2096
return dbus.String(self.host)
1543
2097
self.host = str(value)
1544
2098
1545
2099
# Created - property
2100
@dbus_annotations(
2101
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1546
2102
@dbus_service_property(_interface, signature="s", access="read")
1547
2103
def Created_dbus_property(self):
1548
2104
return datetime_to_dbus(self.created)
1549
2105
1550
2106
# LastEnabled - property
1551
2107
@dbus_service_property(_interface, signature="s", access="read")
1552
2108
def LastEnabled_dbus_property(self):
1553
2109
return datetime_to_dbus(self.last_enabled)
1554
2110
1555
2111
# Enabled - property
1556
2112
@dbus_service_property(_interface,
1557
2113
signature="b",
1563
2119
self.enable()
1564
2120
else:
1565
2121
self.disable()
1566
2122
1567
2123
# LastCheckedOK - property
1568
2124
@dbus_service_property(_interface,
1569
2125
signature="s",
1573
2129
self.checked_ok()
1574
2130
return
1575
2131
return datetime_to_dbus(self.last_checked_ok)
1576
2132
1577
2133
# LastCheckerStatus - property
1578
2134
@dbus_service_property(_interface, signature="n", access="read")
1579
2135
def LastCheckerStatus_dbus_property(self):
1580
2136
return dbus.Int16(self.last_checker_status)
1581
2137
1582
2138
# Expires - property
1583
2139
@dbus_service_property(_interface, signature="s", access="read")
1584
2140
def Expires_dbus_property(self):
1585
2141
return datetime_to_dbus(self.expires)
1586
2142
1587
2143
# LastApprovalRequest - property
1588
2144
@dbus_service_property(_interface, signature="s", access="read")
1589
2145
def LastApprovalRequest_dbus_property(self):
1590
2146
return datetime_to_dbus(self.last_approval_request)
1591
2147
1592
2148
# Timeout - property
1593
2149
@dbus_service_property(_interface,
1594
2150
signature="t",
1609
2165
if (getattr(self, "disable_initiator_tag", None)
1610
2166
is None):
1611
2167
return
1612
gobject.source_remove(self.disable_initiator_tag)
1613
self.disable_initiator_tag = gobject.timeout_add(
2168
GLib.source_remove(self.disable_initiator_tag)
2169
self.disable_initiator_tag = GLib.timeout_add(
1614
2170
int((self.expires - now).total_seconds() * 1000),
1615
2171
self.disable)
1616
2172
1617
2173
# ExtendedTimeout - property
1618
2174
@dbus_service_property(_interface,
1619
2175
signature="t",
1623
2179
return dbus.UInt64(self.extended_timeout.total_seconds()
1624
2180
* 1000)
1625
2181
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1626
2182
1627
2183
# Interval - property
1628
2184
@dbus_service_property(_interface,
1629
2185
signature="t",
1636
2192
return
1637
2193
if self.enabled:
1638
2194
# Reschedule checker run
1639
gobject.source_remove(self.checker_initiator_tag)
1640
self.checker_initiator_tag = gobject.timeout_add(
2195
GLib.source_remove(self.checker_initiator_tag)
2196
self.checker_initiator_tag = GLib.timeout_add(
1641
2197
value, self.start_checker)
1642
self.start_checker() # Start one now, too
1643
2198
self.start_checker() # Start one now, too
2199
1644
2200
# Checker - property
1645
2201
@dbus_service_property(_interface,
1646
2202
signature="s",
1649
2205
if value is None: # get
1650
2206
return dbus.String(self.checker_command)
1651
2207
self.checker_command = str(value)
1652
2208
1653
2209
# CheckerRunning - property
1654
2210
@dbus_service_property(_interface,
1655
2211
signature="b",
1661
2217
self.start_checker()
1662
2218
else:
1663
2219
self.stop_checker()
1664
2220
1665
2221
# ObjectPath - property
2222
@dbus_annotations(
2223
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2224
"org.freedesktop.DBus.Deprecated": "true"})
1666
2225
@dbus_service_property(_interface, signature="o", access="read")
1667
2226
def ObjectPath_dbus_property(self):
1668
return self.dbus_object_path # is already a dbus.ObjectPath
1669
2227
return self.dbus_object_path # is already a dbus.ObjectPath
2228
1670
2229
# Secret = property
2230
@dbus_annotations(
2231
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2232
"invalidates"})
1671
2233
@dbus_service_property(_interface,
1672
2234
signature="ay",
1673
2235
access="write",
1674
2236
byte_arrays=True)
1675
2237
def Secret_dbus_property(self, value):
1676
2238
self.secret = bytes(value)
1677
2239
1678
2240
del _interface
1679
2241
1680
2242
1681
class ProxyClient(object):
1682
def __init__(self, child_pipe, fpr, address):
2243
class ProxyClient:
2244
def __init__(self, child_pipe, key_id, fpr, address):
1683
2245
self._pipe = child_pipe
1684
self._pipe.send(('init', fpr, address))
2246
self._pipe.send(('init', key_id, fpr, address))
1685
2247
if not self._pipe.recv():
1686
raise KeyError(fpr)
1687
2248
raise KeyError(key_id or fpr)
2249
1688
2250
def __getattribute__(self, name):
1689
2251
if name == '_pipe':
1690
2252
return super(ProxyClient, self).__getattribute__(name)
1693
2255
if data[0] == 'data':
1694
2256
return data[1]
1695
2257
if data[0] == 'function':
1696
2258
1697
2259
def func(*args, **kwargs):
1698
2260
self._pipe.send(('funcall', name, args, kwargs))
1699
2261
return self._pipe.recv()[1]
1700
2262
1701
2263
return func
1702
2264
1703
2265
def __setattr__(self, name, value):
1704
2266
if name == '_pipe':
1705
2267
return super(ProxyClient, self).__setattr__(name, value)
1708
2270
1709
2271
class ClientHandler(socketserver.BaseRequestHandler, object):
1710
2272
"""A class to handle client connections.
1711
2273
1712
2274
Instantiated once for each connection to handle it.
1713
2275
Note: This will run in its own forked process."""
1714
2276
1715
2277
def handle(self):
1716
2278
with contextlib.closing(self.server.child_pipe) as child_pipe:
1717
2279
logger.info("TCP connection from: %s",
1718
2280
str(self.client_address))
1719
2281
logger.debug("Pipe FD: %d",
1720
2282
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"))
2283
2284
session = gnutls.ClientSession(self.request)
2285
2286
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2287
# "+AES-256-CBC", "+SHA1",
2288
# "+COMP-NULL", "+CTYPE-OPENPGP",
2289
# "+DHE-DSS"))
1734
2290
# Use a fallback default, since this MUST be set.
1735
2291
priority = self.server.gnutls_priority
1736
2292
if priority is None:
1737
2293
priority = "NORMAL"
1738
gnutls.library.functions.gnutls_priority_set_direct(
1739
session._c_object, priority, None)
1740
2294
gnutls.priority_set_direct(session._c_object,
2295
priority.encode("utf-8"),
2296
None)
2297
1741
2298
# Start communication using the Mandos protocol
1742
2299
# Get protocol number
1743
2300
line = self.request.makefile().readline()
1748
2305
except (ValueError, IndexError, RuntimeError) as error:
1749
2306
logger.error("Unknown protocol version: %s", error)
1750
2307
return
1751
2308
1752
2309
# Start GnuTLS connection
1753
2310
try:
1754
2311
session.handshake()
1755
except gnutls.errors.GNUTLSError as error:
2312
except gnutls.Error as error:
1756
2313
logger.warning("Handshake failed: %s", error)
1757
2314
# Do not run session.bye() here: the session is not
1758
2315
# established. Just abandon the request.
1759
2316
return
1760
2317
logger.debug("Handshake succeeded")
1761
2318
1762
2319
approval_required = False
1763
2320
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,
2321
if gnutls.has_rawpk:
2322
fpr = b""
2323
try:
2324
key_id = self.key_id(
2325
self.peer_certificate(session))
2326
except (TypeError, gnutls.Error) as error:
2327
logger.warning("Bad certificate: %s", error)
2328
return
2329
logger.debug("Key ID: %s", key_id)
2330
2331
else:
2332
key_id = b""
2333
try:
2334
fpr = self.fingerprint(
2335
self.peer_certificate(session))
2336
except (TypeError, gnutls.Error) as error:
2337
logger.warning("Bad certificate: %s", error)
2338
return
2339
logger.debug("Fingerprint: %s", fpr)
2340
2341
try:
2342
client = ProxyClient(child_pipe, key_id, fpr,
1775
2343
self.client_address)
1776
2344
except KeyError:
1777
2345
return
1778
2346
1779
2347
if client.approval_delay:
1780
2348
delay = client.approval_delay
1781
2349
client.approvals_pending += 1
1782
2350
approval_required = True
1783
2351
1784
2352
while True:
1785
2353
if not client.enabled:
1786
2354
logger.info("Client %s is disabled",
1789
2357
# Emit D-Bus signal
1790
2358
client.Rejected("Disabled")
1791
2359
return
1792
2360
1793
2361
if client.approved or not client.approval_delay:
1794
#We are approved or approval is disabled
2362
# We are approved or approval is disabled
1795
2363
break
1796
2364
elif client.approved is None:
1797
2365
logger.info("Client %s needs approval",
1808
2376
# Emit D-Bus signal
1809
2377
client.Rejected("Denied")
1810
2378
return
1811
1812
#wait until timeout or approved
2379
2380
# wait until timeout or approved
1813
2381
time = datetime.datetime.now()
1814
2382
client.changedstate.acquire()
1815
2383
client.changedstate.wait(delay.total_seconds())
1828
2396
break
1829
2397
else:
1830
2398
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
2399
2400
try:
2401
session.send(client.secret)
2402
except gnutls.Error as error:
2403
logger.warning("gnutls send failed",
2404
exc_info=error)
2405
return
2406
1845
2407
logger.info("Sending secret to %s", client.name)
1846
2408
# bump the timeout using extended_timeout
1847
2409
client.bump_timeout(client.extended_timeout)
1848
2410
if self.server.use_dbus:
1849
2411
# Emit D-Bus signal
1850
2412
client.GotSecret()
1851
2413
1852
2414
finally:
1853
2415
if approval_required:
1854
2416
client.approvals_pending -= 1
1855
2417
try:
1856
2418
session.bye()
1857
except gnutls.errors.GNUTLSError as error:
2419
except gnutls.Error as error:
1858
2420
logger.warning("GnuTLS bye failed",
1859
2421
exc_info=error)
1860
2422
1861
2423
@staticmethod
1862
2424
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
2425
"Return the peer's certificate as a bytestring"
2426
try:
2427
cert_type = gnutls.certificate_type_get2(session._c_object,
2428
gnutls.CTYPE_PEERS)
2429
except AttributeError:
2430
cert_type = gnutls.certificate_type_get(session._c_object)
2431
if gnutls.has_rawpk:
2432
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2433
else:
2434
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2435
# If not a valid certificate type...
2436
if cert_type not in valid_cert_types:
2437
logger.info("Cert type %r not in %r", cert_type,
2438
valid_cert_types)
2439
# ...return invalid data
2440
return b""
1870
2441
list_size = ctypes.c_uint(1)
1871
cert_list = (gnutls.library.functions
1872
.gnutls_certificate_get_peers
2442
cert_list = (gnutls.certificate_get_peers
1873
2443
(session._c_object, ctypes.byref(list_size)))
1874
2444
if not bool(cert_list) and list_size.value != 0:
1875
raise gnutls.errors.GNUTLSError("error getting peer"
1876
" certificate")
2445
raise gnutls.Error("error getting peer certificate")
1877
2446
if list_size.value == 0:
1878
2447
return None
1879
2448
cert = cert_list[0]
1880
2449
return ctypes.string_at(cert.data, cert.size)
1881
2450
2451
@staticmethod
2452
def key_id(certificate):
2453
"Convert a certificate bytestring to a hexdigit key ID"
2454
# New GnuTLS "datum" with the public key
2455
datum = gnutls.datum_t(
2456
ctypes.cast(ctypes.c_char_p(certificate),
2457
ctypes.POINTER(ctypes.c_ubyte)),
2458
ctypes.c_uint(len(certificate)))
2459
# XXX all these need to be created in the gnutls "module"
2460
# New empty GnuTLS certificate
2461
pubkey = gnutls.pubkey_t()
2462
gnutls.pubkey_init(ctypes.byref(pubkey))
2463
# Import the raw public key into the certificate
2464
gnutls.pubkey_import(pubkey,
2465
ctypes.byref(datum),
2466
gnutls.X509_FMT_DER)
2467
# New buffer for the key ID
2468
buf = ctypes.create_string_buffer(32)
2469
buf_len = ctypes.c_size_t(len(buf))
2470
# Get the key ID from the raw public key into the buffer
2471
gnutls.pubkey_get_key_id(pubkey,
2472
gnutls.KEYID_USE_SHA256,
2473
ctypes.cast(ctypes.byref(buf),
2474
ctypes.POINTER(ctypes.c_ubyte)),
2475
ctypes.byref(buf_len))
2476
# Deinit the certificate
2477
gnutls.pubkey_deinit(pubkey)
2478
2479
# Convert the buffer to a Python bytestring
2480
key_id = ctypes.string_at(buf, buf_len.value)
2481
# Convert the bytestring to hexadecimal notation
2482
hex_key_id = binascii.hexlify(key_id).upper()
2483
return hex_key_id
2484
1882
2485
@staticmethod
1883
2486
def fingerprint(openpgp):
1884
2487
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1885
2488
# New GnuTLS "datum" with the OpenPGP public key
1886
datum = gnutls.library.types.gnutls_datum_t(
2489
datum = gnutls.datum_t(
1887
2490
ctypes.cast(ctypes.c_char_p(openpgp),
1888
2491
ctypes.POINTER(ctypes.c_ubyte)),
1889
2492
ctypes.c_uint(len(openpgp)))
1890
2493
# 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))
2494
crt = gnutls.openpgp_crt_t()
2495
gnutls.openpgp_crt_init(ctypes.byref(crt))
1894
2496
# 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)
2497
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2498
gnutls.OPENPGP_FMT_RAW)
1898
2499
# Verify the self signature in the key
1899
2500
crtverify = ctypes.c_uint()
1900
gnutls.library.functions.gnutls_openpgp_crt_verify_self(
1901
crt, 0, ctypes.byref(crtverify))
2501
gnutls.openpgp_crt_verify_self(crt, 0,
2502
ctypes.byref(crtverify))
1902
2503
if crtverify.value != 0:
1903
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1904
raise gnutls.errors.CertificateSecurityError(
1905
"Verify failed")
2504
gnutls.openpgp_crt_deinit(crt)
2505
raise gnutls.CertificateSecurityError(code
2506
=crtverify.value)
1906
2507
# New buffer for the fingerprint
1907
2508
buf = ctypes.create_string_buffer(20)
1908
2509
buf_len = ctypes.c_size_t()
1909
2510
# 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))
2511
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2512
ctypes.byref(buf_len))
1912
2513
# Deinit the certificate
1913
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2514
gnutls.openpgp_crt_deinit(crt)
1914
2515
# Convert the buffer to a Python bytestring
1915
2516
fpr = ctypes.string_at(buf, buf_len.value)
1916
2517
# Convert the bytestring to hexadecimal notation
1918
2519
return hex_fpr
1919
2520
1920
2521
1921
class MultiprocessingMixIn(object):
2522
class MultiprocessingMixIn:
1922
2523
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
1923
2524
1924
2525
def sub_process_main(self, request, address):
1925
2526
try:
1926
2527
self.finish_request(request, address)
1927
2528
except Exception:
1928
2529
self.handle_error(request, address)
1929
2530
self.close_request(request)
1930
2531
1931
2532
def process_request(self, request, address):
1932
2533
"""Start a new process to process the request."""
1933
proc = multiprocessing.Process(target = self.sub_process_main,
1934
args = (request, address))
2534
proc = multiprocessing.Process(target=self.sub_process_main,
2535
args=(request, address))
1935
2536
proc.start()
1936
2537
return proc
1937
2538
1938
2539
1939
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2540
class MultiprocessingMixInWithPipe(MultiprocessingMixIn):
1940
2541
""" adds a pipe to the MixIn """
1941
2542
1942
2543
def process_request(self, request, client_address):
1943
2544
"""Overrides and wraps the original process_request().
1944
2545
1945
2546
This function creates a new pipe in self.pipe
1946
2547
"""
1947
2548
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1948
2549
1949
2550
proc = MultiprocessingMixIn.process_request(self, request,
1950
2551
client_address)
1951
2552
self.child_pipe.close()
1952
2553
self.add_pipe(parent_pipe, proc)
1953
2554
1954
2555
def add_pipe(self, parent_pipe, proc):
1955
2556
"""Dummy function; override as necessary"""
1956
2557
raise NotImplementedError()
1957
2558
1958
2559
1959
2560
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1960
socketserver.TCPServer, object):
2561
socketserver.TCPServer):
1961
2562
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1962
2563
1963
2564
Attributes:
1964
2565
enabled: Boolean; whether this server is activated yet
1965
2566
interface: None or a network interface name (string)
1966
2567
use_ipv6: Boolean; to use IPv6 or not
1967
2568
"""
1968
2569
1969
2570
def __init__(self, server_address, RequestHandlerClass,
1970
2571
interface=None,
1971
2572
use_ipv6=True,
1981
2582
self.socketfd = socketfd
1982
2583
# Save the original socket.socket() function
1983
2584
self.socket_socket = socket.socket
2585
1984
2586
# To implement --socket, we monkey patch socket.socket.
1985
#
2587
#
1986
2588
# (When socketserver.TCPServer is a new-style class, we
1987
2589
# could make self.socket into a property instead of monkey
1988
2590
# patching socket.socket.)
1989
#
2591
#
1990
2592
# Create a one-time-only replacement for socket.socket()
1991
2593
@functools.wraps(socket.socket)
1992
2594
def socket_wrapper(*args, **kwargs):
2004
2606
# socket_wrapper(), if socketfd was set.
2005
2607
socketserver.TCPServer.__init__(self, server_address,
2006
2608
RequestHandlerClass)
2007
2609
2008
2610
def server_bind(self):
2009
2611
"""This overrides the normal server_bind() function
2010
2612
to bind to an interface if one was specified, and also NOT to
2011
2613
bind to an address or port if they were not specified."""
2614
global SO_BINDTODEVICE
2012
2615
if self.interface is not None:
2013
2616
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
2617
# Fall back to a hard-coded value which seems to be
2618
# common enough.
2619
logger.warning("SO_BINDTODEVICE not found, trying 25")
2620
SO_BINDTODEVICE = 25
2621
try:
2622
self.socket.setsockopt(
2623
socket.SOL_SOCKET, SO_BINDTODEVICE,
2624
(self.interface + "\0").encode("utf-8"))
2625
except socket.error as error:
2626
if error.errno == errno.EPERM:
2627
logger.error("No permission to bind to"
2628
" interface %s", self.interface)
2629
elif error.errno == errno.ENOPROTOOPT:
2630
logger.error("SO_BINDTODEVICE not available;"
2631
" cannot bind to interface %s",
2632
self.interface)
2633
elif error.errno == errno.ENODEV:
2634
logger.error("Interface %s does not exist,"
2635
" cannot bind", self.interface)
2636
else:
2637
raise
2035
2638
# Only bind(2) the socket if we really need to.
2036
2639
if self.server_address[0] or self.server_address[1]:
2640
if self.server_address[1]:
2641
self.allow_reuse_address = True
2037
2642
if not self.server_address[0]:
2038
2643
if self.address_family == socket.AF_INET6:
2039
any_address = "::" # in6addr_any
2644
any_address = "::" # in6addr_any
2040
2645
else:
2041
any_address = "0.0.0.0" # INADDR_ANY
2646
any_address = "0.0.0.0" # INADDR_ANY
2042
2647
self.server_address = (any_address,
2043
2648
self.server_address[1])
2044
2649
elif not self.server_address[1]:
2054
2659
2055
2660
class MandosServer(IPv6_TCPServer):
2056
2661
"""Mandos server.
2057
2662
2058
2663
Attributes:
2059
2664
clients: set of Client objects
2060
2665
gnutls_priority GnuTLS priority string
2061
2666
use_dbus: Boolean; to emit D-Bus signals or not
2062
2063
Assumes a gobject.MainLoop event loop.
2667
2668
Assumes a GLib.MainLoop event loop.
2064
2669
"""
2065
2670
2066
2671
def __init__(self, server_address, RequestHandlerClass,
2067
2672
interface=None,
2068
2673
use_ipv6=True,
2078
2683
self.gnutls_priority = gnutls_priority
2079
2684
IPv6_TCPServer.__init__(self, server_address,
2080
2685
RequestHandlerClass,
2081
interface = interface,
2082
use_ipv6 = use_ipv6,
2083
socketfd = socketfd)
2084
2686
interface=interface,
2687
use_ipv6=use_ipv6,
2688
socketfd=socketfd)
2689
2085
2690
def server_activate(self):
2086
2691
if self.enabled:
2087
2692
return socketserver.TCPServer.server_activate(self)
2088
2693
2089
2694
def enable(self):
2090
2695
self.enabled = True
2091
2696
2092
2697
def add_pipe(self, parent_pipe, proc):
2093
2698
# 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,
2699
GLib.io_add_watch(
2700
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2701
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2097
2702
functools.partial(self.handle_ipc,
2098
parent_pipe = parent_pipe,
2099
proc = proc))
2100
2703
parent_pipe=parent_pipe,
2704
proc=proc))
2705
2101
2706
def handle_ipc(self, source, condition,
2102
2707
parent_pipe=None,
2103
proc = None,
2708
proc=None,
2104
2709
client_object=None):
2105
2710
# error, or the other end of multiprocessing.Pipe has closed
2106
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2711
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2107
2712
# Wait for other process to exit
2108
2713
proc.join()
2109
2714
return False
2110
2715
2111
2716
# Read a request from the child
2112
2717
request = parent_pipe.recv()
2113
2718
command = request[0]
2114
2719
2115
2720
if command == 'init':
2116
fpr = request[1]
2117
address = request[2]
2118
2119
for c in self.clients.itervalues():
2120
if c.fingerprint == fpr:
2721
key_id = request[1].decode("ascii")
2722
fpr = request[2].decode("ascii")
2723
address = request[3]
2724
2725
for c in self.clients.values():
2726
if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2727
continue
2728
if key_id and c.key_id == key_id:
2729
client = c
2730
break
2731
if fpr and c.fingerprint == fpr:
2121
2732
client = c
2122
2733
break
2123
2734
else:
2124
logger.info("Client not found for fingerprint: %s, ad"
2125
"dress: %s", fpr, address)
2735
logger.info("Client not found for key ID: %s, address"
2736
": %s", key_id or fpr, address)
2126
2737
if self.use_dbus:
2127
2738
# Emit D-Bus signal
2128
mandos_dbus_service.ClientNotFound(fpr,
2739
mandos_dbus_service.ClientNotFound(key_id or fpr,
2129
2740
address[0])
2130
2741
parent_pipe.send(False)
2131
2742
return False
2132
2133
gobject.io_add_watch(
2134
parent_pipe.fileno(),
2135
gobject.IO_IN | gobject.IO_HUP,
2743
2744
GLib.io_add_watch(
2745
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2746
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2136
2747
functools.partial(self.handle_ipc,
2137
parent_pipe = parent_pipe,
2138
proc = proc,
2139
client_object = client))
2748
parent_pipe=parent_pipe,
2749
proc=proc,
2750
client_object=client))
2140
2751
parent_pipe.send(True)
2141
2752
# remove the old hook in favor of the new above hook on
2142
2753
# same fileno
2145
2756
funcname = request[1]
2146
2757
args = request[2]
2147
2758
kwargs = request[3]
2148
2759
2149
2760
parent_pipe.send(('data', getattr(client_object,
2150
2761
funcname)(*args,
2151
2762
**kwargs)))
2152
2763
2153
2764
if command == 'getattr':
2154
2765
attrname = request[1]
2155
2766
if isinstance(client_object.__getattribute__(attrname),
2156
collections.Callable):
2767
collections.abc.Callable):
2157
2768
parent_pipe.send(('function', ))
2158
2769
else:
2159
2770
parent_pipe.send((
2160
2771
'data', client_object.__getattribute__(attrname)))
2161
2772
2162
2773
if command == 'setattr':
2163
2774
attrname = request[1]
2164
2775
value = request[2]
2165
2776
setattr(client_object, attrname, value)
2166
2777
2167
2778
return True
2168
2779
2169
2780
2170
2781
def rfc3339_duration_to_delta(duration):
2171
2782
"""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)
2783
2784
>>> rfc3339_duration_to_delta("P7D") == datetime.timedelta(7)
2785
True
2786
>>> rfc3339_duration_to_delta("PT60S") == datetime.timedelta(0, 60)
2787
True
2788
>>> rfc3339_duration_to_delta("PT60M") == datetime.timedelta(0, 3600)
2789
True
2790
>>> rfc3339_duration_to_delta("PT24H") == datetime.timedelta(1)
2791
True
2792
>>> rfc3339_duration_to_delta("P1W") == datetime.timedelta(7)
2793
True
2794
>>> rfc3339_duration_to_delta("PT5M30S") == datetime.timedelta(0, 330)
2795
True
2796
>>> rfc3339_duration_to_delta("P1DT3M20S") == datetime.timedelta(1, 200)
2797
True
2187
2798
"""
2188
2799
2189
2800
# Parsing an RFC 3339 duration with regular expressions is not
2190
2801
# possible - there would have to be multiple places for the same
2191
2802
# values, like seconds. The current code, while more esoteric, is
2192
2803
# cleaner without depending on a parsing library. If Python had a
2193
2804
# built-in library for parsing we would use it, but we'd like to
2194
2805
# avoid excessive use of external libraries.
2195
2806
2196
2807
# New type for defining tokens, syntax, and semantics all-in-one
2197
2808
Token = collections.namedtuple("Token", (
2198
2809
"regexp", # To match token; if "value" is not None, must have
2231
2842
frozenset((token_year, token_month,
2232
2843
token_day, token_time,
2233
2844
token_week)))
2234
# Define starting values
2235
value = datetime.timedelta() # Value so far
2845
# Define starting values:
2846
# Value so far
2847
value = datetime.timedelta()
2236
2848
found_token = None
2237
followers = frozenset((token_duration, )) # Following valid tokens
2238
s = duration # String left to parse
2849
# Following valid tokens
2850
followers = frozenset((token_duration, ))
2851
# String left to parse
2852
s = duration
2239
2853
# Loop until end token is found
2240
2854
while found_token is not token_end:
2241
2855
# Search for any currently valid tokens
2265
2879
2266
2880
def string_to_delta(interval):
2267
2881
"""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)
2882
2883
>>> string_to_delta('7d') == datetime.timedelta(7)
2884
True
2885
>>> string_to_delta('60s') == datetime.timedelta(0, 60)
2886
True
2887
>>> string_to_delta('60m') == datetime.timedelta(0, 3600)
2888
True
2889
>>> string_to_delta('24h') == datetime.timedelta(1)
2890
True
2891
>>> string_to_delta('1w') == datetime.timedelta(7)
2892
True
2893
>>> string_to_delta('5m 30s') == datetime.timedelta(0, 330)
2894
True
2281
2895
"""
2282
2896
2283
2897
try:
2284
2898
return rfc3339_duration_to_delta(interval)
2285
2899
except ValueError:
2286
2900
pass
2287
2901
2288
2902
timevalue = datetime.timedelta(0)
2289
2903
for s in interval.split():
2290
2904
try:
2308
2922
return timevalue
2309
2923
2310
2924
2311
def daemon(nochdir = False, noclose = False):
2925
def daemon(nochdir=False, noclose=False):
2312
2926
"""See daemon(3). Standard BSD Unix function.
2313
2927
2314
2928
This should really exist as os.daemon, but it doesn't (yet)."""
2315
2929
if os.fork():
2316
2930
sys.exit()
2334
2948
2335
2949
2336
2950
def main():
2337
2951
2338
2952
##################################################################
2339
2953
# Parsing of options, both command line and config file
2340
2954
2341
2955
parser = argparse.ArgumentParser()
2342
2956
parser.add_argument("-v", "--version", action="version",
2343
version = "%(prog)s {}".format(version),
2957
version="%(prog)s {}".format(version),
2344
2958
help="show version number and exit")
2345
2959
parser.add_argument("-i", "--interface", metavar="IF",
2346
2960
help="Bind to interface IF")
2382
2996
parser.add_argument("--no-zeroconf", action="store_false",
2383
2997
dest="zeroconf", help="Do not use Zeroconf",
2384
2998
default=None)
2385
2999
2386
3000
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
3001
2393
3002
# 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
3003
if gnutls.has_rawpk:
3004
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
3005
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
3006
else:
3007
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
3008
":+SIGN-DSA-SHA256")
3009
server_defaults = {"interface": "",
3010
"address": "",
3011
"port": "",
3012
"debug": "False",
3013
"priority": priority,
3014
"servicename": "Mandos",
3015
"use_dbus": "True",
3016
"use_ipv6": "True",
3017
"debuglevel": "",
3018
"restore": "True",
3019
"socket": "",
3020
"statedir": "/var/lib/mandos",
3021
"foreground": "False",
3022
"zeroconf": "True",
3023
}
3024
del priority
3025
2412
3026
# Parse config file for server-global settings
2413
server_config = configparser.SafeConfigParser(server_defaults)
3027
server_config = configparser.ConfigParser(server_defaults)
2414
3028
del server_defaults
2415
3029
server_config.read(os.path.join(options.configdir, "mandos.conf"))
2416
# Convert the SafeConfigParser object to a dict
3030
# Convert the ConfigParser object to a dict
2417
3031
server_settings = server_config.defaults()
2418
3032
# Use the appropriate methods on the non-string config options
2419
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
3033
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3034
"foreground", "zeroconf"):
2420
3035
server_settings[option] = server_config.getboolean("DEFAULT",
2421
3036
option)
2422
3037
if server_settings["port"]:
2432
3047
server_settings["socket"] = os.dup(server_settings
2433
3048
["socket"])
2434
3049
del server_config
2435
3050
2436
3051
# Override the settings from the config file with command line
2437
3052
# options, if set.
2438
3053
for option in ("interface", "address", "port", "debug",
2456
3071
if server_settings["debug"]:
2457
3072
server_settings["foreground"] = True
2458
3073
# Now we have our good server settings in "server_settings"
2459
3074
2460
3075
##################################################################
2461
3076
2462
3077
if (not server_settings["zeroconf"]
2463
3078
and not (server_settings["port"]
2464
3079
or server_settings["socket"] != "")):
2465
3080
parser.error("Needs port or socket to work without Zeroconf")
2466
3081
2467
3082
# For convenience
2468
3083
debug = server_settings["debug"]
2469
3084
debuglevel = server_settings["debuglevel"]
2473
3088
stored_state_file)
2474
3089
foreground = server_settings["foreground"]
2475
3090
zeroconf = server_settings["zeroconf"]
2476
3091
2477
3092
if debug:
2478
3093
initlogger(debug, logging.DEBUG)
2479
3094
else:
2482
3097
else:
2483
3098
level = getattr(logging, debuglevel.upper())
2484
3099
initlogger(debug, level)
2485
3100
2486
3101
if server_settings["servicename"] != "Mandos":
2487
3102
syslogger.setFormatter(
2488
3103
logging.Formatter('Mandos ({}) [%(process)d]:'
2489
3104
' %(levelname)s: %(message)s'.format(
2490
3105
server_settings["servicename"])))
2491
3106
2492
3107
# Parse config file with clients
2493
client_config = configparser.SafeConfigParser(Client
2494
.client_defaults)
3108
client_config = configparser.ConfigParser(Client.client_defaults)
2495
3109
client_config.read(os.path.join(server_settings["configdir"],
2496
3110
"clients.conf"))
2497
3111
2498
3112
global mandos_dbus_service
2499
3113
mandos_dbus_service = None
2500
3114
2501
3115
socketfd = None
2502
3116
if server_settings["socket"] != "":
2503
3117
socketfd = server_settings["socket"]
2519
3133
except IOError as e:
2520
3134
logger.error("Could not open file %r", pidfilename,
2521
3135
exc_info=e)
2522
2523
for name in ("_mandos", "mandos", "nobody"):
3136
3137
for name, group in (("_mandos", "_mandos"),
3138
("mandos", "mandos"),
3139
("nobody", "nogroup")):
2524
3140
try:
2525
3141
uid = pwd.getpwnam(name).pw_uid
2526
gid = pwd.getpwnam(name).pw_gid
3142
gid = pwd.getpwnam(group).pw_gid
2527
3143
break
2528
3144
except KeyError:
2529
3145
continue
2533
3149
try:
2534
3150
os.setgid(gid)
2535
3151
os.setuid(uid)
3152
if debug:
3153
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3154
gid))
2536
3155
except OSError as error:
3156
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3157
.format(uid, gid, os.strerror(error.errno)))
2537
3158
if error.errno != errno.EPERM:
2538
3159
raise
2539
3160
2540
3161
if debug:
2541
3162
# Enable all possible GnuTLS debugging
2542
3163
2543
3164
# "Use a log level over 10 to enable all debugging options."
2544
3165
# - GnuTLS manual
2545
gnutls.library.functions.gnutls_global_set_log_level(11)
2546
2547
@gnutls.library.types.gnutls_log_func
3166
gnutls.global_set_log_level(11)
3167
3168
@gnutls.log_func
2548
3169
def debug_gnutls(level, string):
2549
3170
logger.debug("GnuTLS: %s", string[:-1])
2550
2551
gnutls.library.functions.gnutls_global_set_log_function(
2552
debug_gnutls)
2553
3171
3172
gnutls.global_set_log_function(debug_gnutls)
3173
2554
3174
# Redirect stdin so all checkers get /dev/null
2555
3175
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2556
3176
os.dup2(null, sys.stdin.fileno())
2557
3177
if null > 2:
2558
3178
os.close(null)
2559
3179
2560
3180
# Need to fork before connecting to D-Bus
2561
3181
if not foreground:
2562
3182
# Close all input and output, do double fork, etc.
2563
3183
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
3184
3185
if gi.version_info < (3, 10, 2):
3186
# multiprocessing will use threads, so before we use GLib we
3187
# need to inform GLib that threads will be used.
3188
GLib.threads_init()
3189
2569
3190
global main_loop
2570
3191
# From the Avahi example code
2571
3192
DBusGMainLoop(set_as_default=True)
2572
main_loop = gobject.MainLoop()
3193
main_loop = GLib.MainLoop()
2573
3194
bus = dbus.SystemBus()
2574
3195
# End of Avahi example code
2575
3196
if use_dbus:
2588
3209
if zeroconf:
2589
3210
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2590
3211
service = AvahiServiceToSyslog(
2591
name = server_settings["servicename"],
2592
servicetype = "_mandos._tcp",
2593
protocol = protocol,
2594
bus = bus)
3212
name=server_settings["servicename"],
3213
servicetype="_mandos._tcp",
3214
protocol=protocol,
3215
bus=bus)
2595
3216
if server_settings["interface"]:
2596
3217
service.interface = if_nametoindex(
2597
3218
server_settings["interface"].encode("utf-8"))
2598
3219
2599
3220
global multiprocessing_manager
2600
3221
multiprocessing_manager = multiprocessing.Manager()
2601
3222
2602
3223
client_class = Client
2603
3224
if use_dbus:
2604
client_class = functools.partial(ClientDBus, bus = bus)
2605
3225
client_class = functools.partial(ClientDBus, bus=bus)
3226
2606
3227
client_settings = Client.config_parser(client_config)
2607
3228
old_client_settings = {}
2608
3229
clients_data = {}
2609
3230
2610
3231
# This is used to redirect stdout and stderr for checker processes
2611
3232
global wnull
2612
wnull = open(os.devnull, "w") # A writable /dev/null
3233
wnull = open(os.devnull, "w") # A writable /dev/null
2613
3234
# Only used if server is running in foreground but not in debug
2614
3235
# mode
2615
3236
if debug or not foreground:
2616
3237
wnull.close()
2617
3238
2618
3239
# Get client data and settings from last running state.
2619
3240
if server_settings["restore"]:
2620
3241
try:
2621
3242
with open(stored_state_path, "rb") as stored_state:
2622
clients_data, old_client_settings = pickle.load(
2623
stored_state)
3243
if sys.version_info.major == 2:
3244
clients_data, old_client_settings = pickle.load(
3245
stored_state)
3246
else:
3247
bytes_clients_data, bytes_old_client_settings = (
3248
pickle.load(stored_state, encoding="bytes"))
3249
# Fix bytes to strings
3250
# clients_data
3251
# .keys()
3252
clients_data = {(key.decode("utf-8")
3253
if isinstance(key, bytes)
3254
else key): value
3255
for key, value in
3256
bytes_clients_data.items()}
3257
del bytes_clients_data
3258
for key in clients_data:
3259
value = {(k.decode("utf-8")
3260
if isinstance(k, bytes) else k): v
3261
for k, v in
3262
clients_data[key].items()}
3263
clients_data[key] = value
3264
# .client_structure
3265
value["client_structure"] = [
3266
(s.decode("utf-8")
3267
if isinstance(s, bytes)
3268
else s) for s in
3269
value["client_structure"]]
3270
# .name, .host, and .checker_command
3271
for k in ("name", "host", "checker_command"):
3272
if isinstance(value[k], bytes):
3273
value[k] = value[k].decode("utf-8")
3274
if "key_id" not in value:
3275
value["key_id"] = ""
3276
elif "fingerprint" not in value:
3277
value["fingerprint"] = ""
3278
# old_client_settings
3279
# .keys()
3280
old_client_settings = {
3281
(key.decode("utf-8")
3282
if isinstance(key, bytes)
3283
else key): value
3284
for key, value in
3285
bytes_old_client_settings.items()}
3286
del bytes_old_client_settings
3287
# .host and .checker_command
3288
for value in old_client_settings.values():
3289
for attribute in ("host", "checker_command"):
3290
if isinstance(value[attribute], bytes):
3291
value[attribute] = (value[attribute]
3292
.decode("utf-8"))
2624
3293
os.remove(stored_state_path)
2625
3294
except IOError as e:
2626
3295
if e.errno == errno.ENOENT:
2634
3303
logger.warning("Could not load persistent state: "
2635
3304
"EOFError:",
2636
3305
exc_info=e)
2637
3306
2638
3307
with PGPEngine() as pgp:
2639
3308
for client_name, client in clients_data.items():
2640
3309
# Skip removed clients
2641
3310
if client_name not in client_settings:
2642
3311
continue
2643
3312
2644
3313
# Decide which value to use after restoring saved state.
2645
3314
# We have three different values: Old config file,
2646
3315
# new config file, and saved state.
2657
3326
client[name] = value
2658
3327
except KeyError:
2659
3328
pass
2660
3329
2661
3330
# Clients who has passed its expire date can still be
2662
3331
# enabled if its last checker was successful. A Client
2663
3332
# whose checker succeeded before we stored its state is
2696
3365
client_name))
2697
3366
client["secret"] = (client_settings[client_name]
2698
3367
["secret"])
2699
3368
2700
3369
# Add/remove clients based on new changes made to config
2701
3370
for client_name in (set(old_client_settings)
2702
3371
- set(client_settings)):
2704
3373
for client_name in (set(client_settings)
2705
3374
- set(old_client_settings)):
2706
3375
clients_data[client_name] = client_settings[client_name]
2707
3376
2708
3377
# Create all client objects
2709
3378
for client_name, client in clients_data.items():
2710
3379
tcp_server.clients[client_name] = client_class(
2711
name = client_name,
2712
settings = client,
2713
server_settings = server_settings)
2714
3380
name=client_name,
3381
settings=client,
3382
server_settings=server_settings)
3383
2715
3384
if not tcp_server.clients:
2716
3385
logger.warning("No clients defined")
2717
3386
2718
3387
if not foreground:
2719
3388
if pidfile is not None:
2720
3389
pid = os.getpid()
2726
3395
pidfilename, pid)
2727
3396
del pidfile
2728
3397
del pidfilename
2729
2730
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2731
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2732
3398
3399
for termsig in (signal.SIGHUP, signal.SIGTERM):
3400
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3401
lambda: main_loop.quit() and False)
3402
2733
3403
if use_dbus:
2734
3404
2735
3405
@alternate_dbus_interfaces(
2736
{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
2737
class MandosDBusService(DBusObjectWithProperties):
3406
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3407
class MandosDBusService(DBusObjectWithObjectManager):
2738
3408
"""A D-Bus proxy object"""
2739
3409
2740
3410
def __init__(self):
2741
3411
dbus.service.Object.__init__(self, bus, "/")
2742
3412
2743
3413
_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
3414
2751
3415
@dbus.service.signal(_interface, signature="o")
2752
3416
def ClientAdded(self, objpath):
2753
3417
"D-Bus signal"
2754
3418
pass
2755
3419
2756
3420
@dbus.service.signal(_interface, signature="ss")
2757
def ClientNotFound(self, fingerprint, address):
3421
def ClientNotFound(self, key_id, address):
2758
3422
"D-Bus signal"
2759
3423
pass
2760
3424
3425
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3426
"true"})
2761
3427
@dbus.service.signal(_interface, signature="os")
2762
3428
def ClientRemoved(self, objpath, name):
2763
3429
"D-Bus signal"
2764
3430
pass
2765
3431
3432
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3433
"true"})
2766
3434
@dbus.service.method(_interface, out_signature="ao")
2767
3435
def GetAllClients(self):
2768
3436
"D-Bus method"
2769
3437
return dbus.Array(c.dbus_object_path for c in
2770
tcp_server.clients.itervalues())
2771
3438
tcp_server.clients.values())
3439
3440
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3441
"true"})
2772
3442
@dbus.service.method(_interface,
2773
3443
out_signature="a{oa{sv}}")
2774
3444
def GetAllClientsWithProperties(self):
2775
3445
"D-Bus method"
2776
3446
return dbus.Dictionary(
2777
{ c.dbus_object_path: c.GetAll("")
2778
for c in tcp_server.clients.itervalues() },
3447
{c.dbus_object_path: c.GetAll(
3448
"se.recompile.Mandos.Client")
3449
for c in tcp_server.clients.values()},
2779
3450
signature="oa{sv}")
2780
3451
2781
3452
@dbus.service.method(_interface, in_signature="o")
2782
3453
def RemoveClient(self, object_path):
2783
3454
"D-Bus method"
2784
for c in tcp_server.clients.itervalues():
3455
for c in tcp_server.clients.values():
2785
3456
if c.dbus_object_path == object_path:
2786
3457
del tcp_server.clients[c.name]
2787
3458
c.remove_from_connection()
2788
# Don't signal anything except ClientRemoved
3459
# Don't signal the disabling
2789
3460
c.disable(quiet=True)
2790
# Emit D-Bus signal
2791
self.ClientRemoved(object_path, c.name)
3461
# Emit D-Bus signal for removal
3462
self.client_removed_signal(c)
2792
3463
return
2793
3464
raise KeyError(object_path)
2794
3465
2795
3466
del _interface
2796
3467
3468
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3469
out_signature="a{oa{sa{sv}}}")
3470
def GetManagedObjects(self):
3471
"""D-Bus method"""
3472
return dbus.Dictionary(
3473
{client.dbus_object_path:
3474
dbus.Dictionary(
3475
{interface: client.GetAll(interface)
3476
for interface in
3477
client._get_all_interface_names()})
3478
for client in tcp_server.clients.values()})
3479
3480
def client_added_signal(self, client):
3481
"""Send the new standard signal and the old signal"""
3482
if use_dbus:
3483
# New standard signal
3484
self.InterfacesAdded(
3485
client.dbus_object_path,
3486
dbus.Dictionary(
3487
{interface: client.GetAll(interface)
3488
for interface in
3489
client._get_all_interface_names()}))
3490
# Old signal
3491
self.ClientAdded(client.dbus_object_path)
3492
3493
def client_removed_signal(self, client):
3494
"""Send the new standard signal and the old signal"""
3495
if use_dbus:
3496
# New standard signal
3497
self.InterfacesRemoved(
3498
client.dbus_object_path,
3499
client._get_all_interface_names())
3500
# Old signal
3501
self.ClientRemoved(client.dbus_object_path,
3502
client.name)
3503
2797
3504
mandos_dbus_service = MandosDBusService()
2798
3505
3506
# Save modules to variables to exempt the modules from being
3507
# unloaded before the function registered with atexit() is run.
3508
mp = multiprocessing
3509
wn = wnull
3510
2799
3511
def cleanup():
2800
3512
"Cleanup function; run on exit"
2801
3513
if zeroconf:
2802
3514
service.cleanup()
2803
2804
multiprocessing.active_children()
2805
wnull.close()
3515
3516
mp.active_children()
3517
wn.close()
2806
3518
if not (tcp_server.clients or client_settings):
2807
3519
return
2808
3520
2809
3521
# Store client before exiting. Secrets are encrypted with key
2810
3522
# based on what config file has. If config file is
2811
3523
# removed/edited, old secret will thus be unrecovable.
2812
3524
clients = {}
2813
3525
with PGPEngine() as pgp:
2814
for client in tcp_server.clients.itervalues():
3526
for client in tcp_server.clients.values():
2815
3527
key = client_settings[client.name]["secret"]
2816
3528
client.encrypted_secret = pgp.encrypt(client.secret,
2817
3529
key)
2818
3530
client_dict = {}
2819
3531
2820
3532
# A list of attributes that can not be pickled
2821
3533
# + secret.
2822
exclude = { "bus", "changedstate", "secret",
2823
"checker", "server_settings" }
3534
exclude = {"bus", "changedstate", "secret",
3535
"checker", "server_settings"}
2824
3536
for name, typ in inspect.getmembers(dbus.service
2825
3537
.Object):
2826
3538
exclude.add(name)
2827
3539
2828
3540
client_dict["encrypted_secret"] = (client
2829
3541
.encrypted_secret)
2830
3542
for attr in client.client_structure:
2831
3543
if attr not in exclude:
2832
3544
client_dict[attr] = getattr(client, attr)
2833
3545
2834
3546
clients[client.name] = client_dict
2835
3547
del client_settings[client.name]["secret"]
2836
3548
2837
3549
try:
2838
3550
with tempfile.NamedTemporaryFile(
2839
3551
mode='wb',
2841
3553
prefix='clients-',
2842
3554
dir=os.path.dirname(stored_state_path),
2843
3555
delete=False) as stored_state:
2844
pickle.dump((clients, client_settings), stored_state)
3556
pickle.dump((clients, client_settings), stored_state,
3557
protocol=2)
2845
3558
tempname = stored_state.name
2846
3559
os.rename(tempname, stored_state_path)
2847
3560
except (IOError, OSError) as e:
2857
3570
logger.warning("Could not save persistent state:",
2858
3571
exc_info=e)
2859
3572
raise
2860
3573
2861
3574
# Delete all clients, and settings from config
2862
3575
while tcp_server.clients:
2863
3576
name, client = tcp_server.clients.popitem()
2864
3577
if use_dbus:
2865
3578
client.remove_from_connection()
2866
# Don't signal anything except ClientRemoved
3579
# Don't signal the disabling
2867
3580
client.disable(quiet=True)
3581
# Emit D-Bus signal for removal
2868
3582
if use_dbus:
2869
# Emit D-Bus signal
2870
mandos_dbus_service.ClientRemoved(
2871
client.dbus_object_path, client.name)
3583
mandos_dbus_service.client_removed_signal(client)
2872
3584
client_settings.clear()
2873
3585
2874
3586
atexit.register(cleanup)
2875
2876
for client in tcp_server.clients.itervalues():
3587
3588
for client in tcp_server.clients.values():
2877
3589
if use_dbus:
2878
# Emit D-Bus signal
2879
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3590
# Emit D-Bus signal for adding
3591
mandos_dbus_service.client_added_signal(client)
2880
3592
# Need to initiate checking of clients
2881
3593
if client.enabled:
2882
3594
client.init_checker()
2883
3595
2884
3596
tcp_server.enable()
2885
3597
tcp_server.server_activate()
2886
3598
2887
3599
# Find out what port we got
2888
3600
if zeroconf:
2889
3601
service.port = tcp_server.socket.getsockname()[1]
2894
3606
else: # IPv4
2895
3607
logger.info("Now listening on address %r, port %d",
2896
3608
*tcp_server.socket.getsockname())
2897
2898
#service.interface = tcp_server.socket.getsockname()[3]
2899
3609
3610
# service.interface = tcp_server.socket.getsockname()[3]
3611
2900
3612
try:
2901
3613
if zeroconf:
2902
3614
# From the Avahi example code
2907
3619
cleanup()
2908
3620
sys.exit(1)
2909
3621
# 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
3622
3623
GLib.io_add_watch(
3624
GLib.IOChannel.unix_new(tcp_server.fileno()),
3625
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
3626
lambda *args, **kwargs: (tcp_server.handle_request
3627
(*args[2:], **kwargs) or True))
3628
2916
3629
logger.debug("Starting main loop")
2917
3630
main_loop.run()
2918
3631
except AvahiError as error:
2927
3640
# Must run before the D-Bus bus name gets deregistered
2928
3641
cleanup()
2929
3642
3643
3644
def should_only_run_tests():
3645
parser = argparse.ArgumentParser(add_help=False)
3646
parser.add_argument("--check", action='store_true')
3647
args, unknown_args = parser.parse_known_args()
3648
run_tests = args.check
3649
if run_tests:
3650
# Remove --check argument from sys.argv
3651
sys.argv[1:] = unknown_args
3652
return run_tests
3653
3654
# Add all tests from doctest strings
3655
def load_tests(loader, tests, none):
3656
import doctest
3657
tests.addTests(doctest.DocTestSuite())
3658
return tests
2930
3659
2931
3660
if __name__ == '__main__':
2932
main()
3661
try:
3662
if should_only_run_tests():
3663
# Call using ./mandos --check [--verbose]
3664
unittest.main()
3665
else:
3666
main()
3667
finally:
3668
logging.shutdown()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0