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- Committer: Teddy Hogeborn
- Date: 2019-08-24 14:52:59 UTC
- Revision ID: teddy@recompile.se-20190824145259-ifatm1r12kyp4z25
Server: Use new GLib.io_add_watch() call signature
* INSTALL: Increase version requirement of PyGObject to 3.8.
* mandos: When calling GLib.io_add_watch(), always pass priority as
the second argument, which is supported by PyGObject 3.8 or
later.
* INSTALL: Increase version requirement of PyGObject to 3.8.
* mandos: When calling GLib.io_add_watch(), always pass priority as
the second argument, which is supported by PyGObject 3.8 or
later.
- 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/python
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
82
81
83
82
import dbus
84
83
import dbus.service
85
try:
86
import gobject
87
except ImportError:
88
from gi.repository import GObject as gobject
89
import avahi
84
import gi
85
from gi.repository import GLib
90
86
from dbus.mainloop.glib import DBusGMainLoop
91
87
import ctypes
92
88
import ctypes.util
93
89
import xml.dom.minidom
94
90
import inspect
95
91
92
if sys.version_info.major == 2:
93
__metaclass__ = type
94
95
# Show warnings by default
96
if not sys.warnoptions:
97
import warnings
98
warnings.simplefilter("default")
99
100
# Try to find the value of SO_BINDTODEVICE:
96
101
try:
102
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
103
# newer, and it is also the most natural place for it:
97
104
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
98
105
except AttributeError:
99
106
try:
107
# This is where SO_BINDTODEVICE was up to and including Python
108
# 2.6, and also 3.2:
100
109
from IN import SO_BINDTODEVICE
101
110
except ImportError:
102
SO_BINDTODEVICE = None
111
# In Python 2.7 it seems to have been removed entirely.
112
# Try running the C preprocessor:
113
try:
114
cc = subprocess.Popen(["cc", "--language=c", "-E",
115
"/dev/stdin"],
116
stdin=subprocess.PIPE,
117
stdout=subprocess.PIPE)
118
stdout = cc.communicate(
119
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
120
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
121
except (OSError, ValueError, IndexError):
122
# No value found
123
SO_BINDTODEVICE = None
103
124
104
125
if sys.version_info.major == 2:
105
126
str = unicode
106
127
107
version = "1.6.9"
128
if sys.version_info < (3, 2):
129
configparser.Configparser = configparser.SafeConfigParser
130
131
version = "1.8.8"
108
132
stored_state_file = "clients.pickle"
109
133
110
134
logger = logging.getLogger()
135
logging.captureWarnings(True) # Show warnings via the logging system
111
136
syslogger = None
112
137
113
138
try:
114
139
if_nametoindex = ctypes.cdll.LoadLibrary(
115
140
ctypes.util.find_library("c")).if_nametoindex
116
141
except (OSError, AttributeError):
117
142
118
143
def if_nametoindex(interface):
119
144
"Get an interface index the hard way, i.e. using fcntl()"
120
145
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
125
150
return interface_index
126
151
127
152
153
def copy_function(func):
154
"""Make a copy of a function"""
155
if sys.version_info.major == 2:
156
return types.FunctionType(func.func_code,
157
func.func_globals,
158
func.func_name,
159
func.func_defaults,
160
func.func_closure)
161
else:
162
return types.FunctionType(func.__code__,
163
func.__globals__,
164
func.__name__,
165
func.__defaults__,
166
func.__closure__)
167
168
128
169
def initlogger(debug, level=logging.WARNING):
129
170
"""init logger and add loglevel"""
130
171
131
172
global syslogger
132
173
syslogger = (logging.handlers.SysLogHandler(
133
facility = logging.handlers.SysLogHandler.LOG_DAEMON,
134
address = "/dev/log"))
174
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
175
address="/dev/log"))
135
176
syslogger.setFormatter(logging.Formatter
136
177
('Mandos [%(process)d]: %(levelname)s:'
137
178
' %(message)s'))
138
179
logger.addHandler(syslogger)
139
180
140
181
if debug:
141
182
console = logging.StreamHandler()
142
183
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
152
193
pass
153
194
154
195
155
class PGPEngine(object):
196
class PGPEngine:
156
197
"""A simple class for OpenPGP symmetric encryption & decryption"""
157
198
158
199
def __init__(self):
159
200
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
201
self.gpg = "gpg"
202
try:
203
output = subprocess.check_output(["gpgconf"])
204
for line in output.splitlines():
205
name, text, path = line.split(b":")
206
if name == "gpg":
207
self.gpg = path
208
break
209
except OSError as e:
210
if e.errno != errno.ENOENT:
211
raise
160
212
self.gnupgargs = ['--batch',
161
'--home', self.tempdir,
213
'--homedir', self.tempdir,
162
214
'--force-mdc',
163
'--quiet',
164
'--no-use-agent']
165
215
'--quiet']
216
# Only GPG version 1 has the --no-use-agent option.
217
if self.gpg == "gpg" or self.gpg.endswith("/gpg"):
218
self.gnupgargs.append("--no-use-agent")
219
166
220
def __enter__(self):
167
221
return self
168
222
169
223
def __exit__(self, exc_type, exc_value, traceback):
170
224
self._cleanup()
171
225
return False
172
226
173
227
def __del__(self):
174
228
self._cleanup()
175
229
176
230
def _cleanup(self):
177
231
if self.tempdir is not None:
178
232
# Delete contents of tempdir
179
233
for root, dirs, files in os.walk(self.tempdir,
180
topdown = False):
234
topdown=False):
181
235
for filename in files:
182
236
os.remove(os.path.join(root, filename))
183
237
for dirname in dirs:
185
239
# Remove tempdir
186
240
os.rmdir(self.tempdir)
187
241
self.tempdir = None
188
242
189
243
def password_encode(self, password):
190
244
# Passphrase can not be empty and can not contain newlines or
191
245
# NUL bytes. So we prefix it and hex encode it.
196
250
.replace(b"\n", b"\\n")
197
251
.replace(b"\0", b"\\x00"))
198
252
return encoded
199
253
200
254
def encrypt(self, data, password):
201
255
passphrase = self.password_encode(password)
202
256
with tempfile.NamedTemporaryFile(
203
257
dir=self.tempdir) as passfile:
204
258
passfile.write(passphrase)
205
259
passfile.flush()
206
proc = subprocess.Popen(['gpg', '--symmetric',
260
proc = subprocess.Popen([self.gpg, '--symmetric',
207
261
'--passphrase-file',
208
262
passfile.name]
209
263
+ self.gnupgargs,
210
stdin = subprocess.PIPE,
211
stdout = subprocess.PIPE,
212
stderr = subprocess.PIPE)
213
ciphertext, err = proc.communicate(input = data)
264
stdin=subprocess.PIPE,
265
stdout=subprocess.PIPE,
266
stderr=subprocess.PIPE)
267
ciphertext, err = proc.communicate(input=data)
214
268
if proc.returncode != 0:
215
269
raise PGPError(err)
216
270
return ciphertext
217
271
218
272
def decrypt(self, data, password):
219
273
passphrase = self.password_encode(password)
220
274
with tempfile.NamedTemporaryFile(
221
dir = self.tempdir) as passfile:
275
dir=self.tempdir) as passfile:
222
276
passfile.write(passphrase)
223
277
passfile.flush()
224
proc = subprocess.Popen(['gpg', '--decrypt',
278
proc = subprocess.Popen([self.gpg, '--decrypt',
225
279
'--passphrase-file',
226
280
passfile.name]
227
281
+ self.gnupgargs,
228
stdin = subprocess.PIPE,
229
stdout = subprocess.PIPE,
230
stderr = subprocess.PIPE)
231
decrypted_plaintext, err = proc.communicate(input = data)
282
stdin=subprocess.PIPE,
283
stdout=subprocess.PIPE,
284
stderr=subprocess.PIPE)
285
decrypted_plaintext, err = proc.communicate(input=data)
232
286
if proc.returncode != 0:
233
287
raise PGPError(err)
234
288
return decrypted_plaintext
235
289
236
290
291
# Pretend that we have an Avahi module
292
class avahi:
293
"""This isn't so much a class as it is a module-like namespace."""
294
IF_UNSPEC = -1 # avahi-common/address.h
295
PROTO_UNSPEC = -1 # avahi-common/address.h
296
PROTO_INET = 0 # avahi-common/address.h
297
PROTO_INET6 = 1 # avahi-common/address.h
298
DBUS_NAME = "org.freedesktop.Avahi"
299
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
300
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
301
DBUS_PATH_SERVER = "/"
302
303
@staticmethod
304
def string_array_to_txt_array(t):
305
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
306
for s in t), signature="ay")
307
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
308
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
309
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
310
SERVER_INVALID = 0 # avahi-common/defs.h
311
SERVER_REGISTERING = 1 # avahi-common/defs.h
312
SERVER_RUNNING = 2 # avahi-common/defs.h
313
SERVER_COLLISION = 3 # avahi-common/defs.h
314
SERVER_FAILURE = 4 # avahi-common/defs.h
315
316
237
317
class AvahiError(Exception):
238
318
def __init__(self, value, *args, **kwargs):
239
319
self.value = value
249
329
pass
250
330
251
331
252
class AvahiService(object):
332
class AvahiService:
253
333
"""An Avahi (Zeroconf) service.
254
334
255
335
Attributes:
256
336
interface: integer; avahi.IF_UNSPEC or an interface index.
257
337
Used to optionally bind to the specified interface.
269
349
server: D-Bus Server
270
350
bus: dbus.SystemBus()
271
351
"""
272
352
273
353
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):
354
interface=avahi.IF_UNSPEC,
355
name=None,
356
servicetype=None,
357
port=None,
358
TXT=None,
359
domain="",
360
host="",
361
max_renames=32768,
362
protocol=avahi.PROTO_UNSPEC,
363
bus=None):
284
364
self.interface = interface
285
365
self.name = name
286
366
self.type = servicetype
295
375
self.server = None
296
376
self.bus = bus
297
377
self.entry_group_state_changed_match = None
298
378
299
379
def rename(self, remove=True):
300
380
"""Derived from the Avahi example code"""
301
381
if self.rename_count >= self.max_renames:
321
401
logger.critical("D-Bus Exception", exc_info=error)
322
402
self.cleanup()
323
403
os._exit(1)
324
404
325
405
def remove(self):
326
406
"""Derived from the Avahi example code"""
327
407
if self.entry_group_state_changed_match is not None:
329
409
self.entry_group_state_changed_match = None
330
410
if self.group is not None:
331
411
self.group.Reset()
332
412
333
413
def add(self):
334
414
"""Derived from the Avahi example code"""
335
415
self.remove()
352
432
dbus.UInt16(self.port),
353
433
avahi.string_array_to_txt_array(self.TXT))
354
434
self.group.Commit()
355
435
356
436
def entry_group_state_changed(self, state, error):
357
437
"""Derived from the Avahi example code"""
358
438
logger.debug("Avahi entry group state change: %i", state)
359
439
360
440
if state == avahi.ENTRY_GROUP_ESTABLISHED:
361
441
logger.debug("Zeroconf service established.")
362
442
elif state == avahi.ENTRY_GROUP_COLLISION:
366
446
logger.critical("Avahi: Error in group state changed %s",
367
447
str(error))
368
448
raise AvahiGroupError("State changed: {!s}".format(error))
369
449
370
450
def cleanup(self):
371
451
"""Derived from the Avahi example code"""
372
452
if self.group is not None:
377
457
pass
378
458
self.group = None
379
459
self.remove()
380
460
381
461
def server_state_changed(self, state, error=None):
382
462
"""Derived from the Avahi example code"""
383
463
logger.debug("Avahi server state change: %i", state)
412
492
logger.debug("Unknown state: %r", state)
413
493
else:
414
494
logger.debug("Unknown state: %r: %r", state, error)
415
495
416
496
def activate(self):
417
497
"""Derived from the Avahi example code"""
418
498
if self.server is None:
429
509
class AvahiServiceToSyslog(AvahiService):
430
510
def rename(self, *args, **kwargs):
431
511
"""Add the new name to the syslog messages"""
432
ret = AvahiService.rename(self, *args, **kwargs)
512
ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
433
513
syslogger.setFormatter(logging.Formatter(
434
514
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
435
515
.format(self.name)))
436
516
return ret
437
517
518
519
# Pretend that we have a GnuTLS module
520
class gnutls:
521
"""This isn't so much a class as it is a module-like namespace."""
522
523
library = ctypes.util.find_library("gnutls")
524
if library is None:
525
library = ctypes.util.find_library("gnutls-deb0")
526
_library = ctypes.cdll.LoadLibrary(library)
527
del library
528
529
# Unless otherwise indicated, the constants and types below are
530
# all from the gnutls/gnutls.h C header file.
531
532
# Constants
533
E_SUCCESS = 0
534
E_INTERRUPTED = -52
535
E_AGAIN = -28
536
CRT_OPENPGP = 2
537
CRT_RAWPK = 3
538
CLIENT = 2
539
SHUT_RDWR = 0
540
CRD_CERTIFICATE = 1
541
E_NO_CERTIFICATE_FOUND = -49
542
X509_FMT_DER = 0
543
NO_TICKETS = 1<<10
544
ENABLE_RAWPK = 1<<18
545
CTYPE_PEERS = 3
546
KEYID_USE_SHA256 = 1 # gnutls/x509.h
547
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
548
549
# Types
550
class session_int(ctypes.Structure):
551
_fields_ = []
552
session_t = ctypes.POINTER(session_int)
553
554
class certificate_credentials_st(ctypes.Structure):
555
_fields_ = []
556
certificate_credentials_t = ctypes.POINTER(
557
certificate_credentials_st)
558
certificate_type_t = ctypes.c_int
559
560
class datum_t(ctypes.Structure):
561
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
562
('size', ctypes.c_uint)]
563
564
class openpgp_crt_int(ctypes.Structure):
565
_fields_ = []
566
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
567
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
568
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
569
credentials_type_t = ctypes.c_int
570
transport_ptr_t = ctypes.c_void_p
571
close_request_t = ctypes.c_int
572
573
# Exceptions
574
class Error(Exception):
575
def __init__(self, message=None, code=None, args=()):
576
# Default usage is by a message string, but if a return
577
# code is passed, convert it to a string with
578
# gnutls.strerror()
579
self.code = code
580
if message is None and code is not None:
581
message = gnutls.strerror(code)
582
return super(gnutls.Error, self).__init__(
583
message, *args)
584
585
class CertificateSecurityError(Error):
586
pass
587
588
# Classes
589
class Credentials:
590
def __init__(self):
591
self._c_object = gnutls.certificate_credentials_t()
592
gnutls.certificate_allocate_credentials(
593
ctypes.byref(self._c_object))
594
self.type = gnutls.CRD_CERTIFICATE
595
596
def __del__(self):
597
gnutls.certificate_free_credentials(self._c_object)
598
599
class ClientSession:
600
def __init__(self, socket, credentials=None):
601
self._c_object = gnutls.session_t()
602
gnutls_flags = gnutls.CLIENT
603
if gnutls.check_version(b"3.5.6"):
604
gnutls_flags |= gnutls.NO_TICKETS
605
if gnutls.has_rawpk:
606
gnutls_flags |= gnutls.ENABLE_RAWPK
607
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
608
del gnutls_flags
609
gnutls.set_default_priority(self._c_object)
610
gnutls.transport_set_ptr(self._c_object, socket.fileno())
611
gnutls.handshake_set_private_extensions(self._c_object,
612
True)
613
self.socket = socket
614
if credentials is None:
615
credentials = gnutls.Credentials()
616
gnutls.credentials_set(self._c_object, credentials.type,
617
ctypes.cast(credentials._c_object,
618
ctypes.c_void_p))
619
self.credentials = credentials
620
621
def __del__(self):
622
gnutls.deinit(self._c_object)
623
624
def handshake(self):
625
return gnutls.handshake(self._c_object)
626
627
def send(self, data):
628
data = bytes(data)
629
data_len = len(data)
630
while data_len > 0:
631
data_len -= gnutls.record_send(self._c_object,
632
data[-data_len:],
633
data_len)
634
635
def bye(self):
636
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
637
638
# Error handling functions
639
def _error_code(result):
640
"""A function to raise exceptions on errors, suitable
641
for the 'restype' attribute on ctypes functions"""
642
if result >= 0:
643
return result
644
if result == gnutls.E_NO_CERTIFICATE_FOUND:
645
raise gnutls.CertificateSecurityError(code=result)
646
raise gnutls.Error(code=result)
647
648
def _retry_on_error(result, func, arguments):
649
"""A function to retry on some errors, suitable
650
for the 'errcheck' attribute on ctypes functions"""
651
while result < 0:
652
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
653
return _error_code(result)
654
result = func(*arguments)
655
return result
656
657
# Unless otherwise indicated, the function declarations below are
658
# all from the gnutls/gnutls.h C header file.
659
660
# Functions
661
priority_set_direct = _library.gnutls_priority_set_direct
662
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
663
ctypes.POINTER(ctypes.c_char_p)]
664
priority_set_direct.restype = _error_code
665
666
init = _library.gnutls_init
667
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
668
init.restype = _error_code
669
670
set_default_priority = _library.gnutls_set_default_priority
671
set_default_priority.argtypes = [session_t]
672
set_default_priority.restype = _error_code
673
674
record_send = _library.gnutls_record_send
675
record_send.argtypes = [session_t, ctypes.c_void_p,
676
ctypes.c_size_t]
677
record_send.restype = ctypes.c_ssize_t
678
record_send.errcheck = _retry_on_error
679
680
certificate_allocate_credentials = (
681
_library.gnutls_certificate_allocate_credentials)
682
certificate_allocate_credentials.argtypes = [
683
ctypes.POINTER(certificate_credentials_t)]
684
certificate_allocate_credentials.restype = _error_code
685
686
certificate_free_credentials = (
687
_library.gnutls_certificate_free_credentials)
688
certificate_free_credentials.argtypes = [
689
certificate_credentials_t]
690
certificate_free_credentials.restype = None
691
692
handshake_set_private_extensions = (
693
_library.gnutls_handshake_set_private_extensions)
694
handshake_set_private_extensions.argtypes = [session_t,
695
ctypes.c_int]
696
handshake_set_private_extensions.restype = None
697
698
credentials_set = _library.gnutls_credentials_set
699
credentials_set.argtypes = [session_t, credentials_type_t,
700
ctypes.c_void_p]
701
credentials_set.restype = _error_code
702
703
strerror = _library.gnutls_strerror
704
strerror.argtypes = [ctypes.c_int]
705
strerror.restype = ctypes.c_char_p
706
707
certificate_type_get = _library.gnutls_certificate_type_get
708
certificate_type_get.argtypes = [session_t]
709
certificate_type_get.restype = _error_code
710
711
certificate_get_peers = _library.gnutls_certificate_get_peers
712
certificate_get_peers.argtypes = [session_t,
713
ctypes.POINTER(ctypes.c_uint)]
714
certificate_get_peers.restype = ctypes.POINTER(datum_t)
715
716
global_set_log_level = _library.gnutls_global_set_log_level
717
global_set_log_level.argtypes = [ctypes.c_int]
718
global_set_log_level.restype = None
719
720
global_set_log_function = _library.gnutls_global_set_log_function
721
global_set_log_function.argtypes = [log_func]
722
global_set_log_function.restype = None
723
724
deinit = _library.gnutls_deinit
725
deinit.argtypes = [session_t]
726
deinit.restype = None
727
728
handshake = _library.gnutls_handshake
729
handshake.argtypes = [session_t]
730
handshake.restype = _error_code
731
handshake.errcheck = _retry_on_error
732
733
transport_set_ptr = _library.gnutls_transport_set_ptr
734
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
735
transport_set_ptr.restype = None
736
737
bye = _library.gnutls_bye
738
bye.argtypes = [session_t, close_request_t]
739
bye.restype = _error_code
740
bye.errcheck = _retry_on_error
741
742
check_version = _library.gnutls_check_version
743
check_version.argtypes = [ctypes.c_char_p]
744
check_version.restype = ctypes.c_char_p
745
746
_need_version = b"3.3.0"
747
if check_version(_need_version) is None:
748
raise self.Error("Needs GnuTLS {} or later"
749
.format(_need_version))
750
751
_tls_rawpk_version = b"3.6.6"
752
has_rawpk = bool(check_version(_tls_rawpk_version))
753
754
if has_rawpk:
755
# Types
756
class pubkey_st(ctypes.Structure):
757
_fields = []
758
pubkey_t = ctypes.POINTER(pubkey_st)
759
760
x509_crt_fmt_t = ctypes.c_int
761
762
# All the function declarations below are from gnutls/abstract.h
763
pubkey_init = _library.gnutls_pubkey_init
764
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
765
pubkey_init.restype = _error_code
766
767
pubkey_import = _library.gnutls_pubkey_import
768
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
769
x509_crt_fmt_t]
770
pubkey_import.restype = _error_code
771
772
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
773
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
774
ctypes.POINTER(ctypes.c_ubyte),
775
ctypes.POINTER(ctypes.c_size_t)]
776
pubkey_get_key_id.restype = _error_code
777
778
pubkey_deinit = _library.gnutls_pubkey_deinit
779
pubkey_deinit.argtypes = [pubkey_t]
780
pubkey_deinit.restype = None
781
else:
782
# All the function declarations below are from gnutls/openpgp.h
783
784
openpgp_crt_init = _library.gnutls_openpgp_crt_init
785
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
786
openpgp_crt_init.restype = _error_code
787
788
openpgp_crt_import = _library.gnutls_openpgp_crt_import
789
openpgp_crt_import.argtypes = [openpgp_crt_t,
790
ctypes.POINTER(datum_t),
791
openpgp_crt_fmt_t]
792
openpgp_crt_import.restype = _error_code
793
794
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
795
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
796
ctypes.POINTER(ctypes.c_uint)]
797
openpgp_crt_verify_self.restype = _error_code
798
799
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
800
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
801
openpgp_crt_deinit.restype = None
802
803
openpgp_crt_get_fingerprint = (
804
_library.gnutls_openpgp_crt_get_fingerprint)
805
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
806
ctypes.c_void_p,
807
ctypes.POINTER(
808
ctypes.c_size_t)]
809
openpgp_crt_get_fingerprint.restype = _error_code
810
811
if check_version(b"3.6.4"):
812
certificate_type_get2 = _library.gnutls_certificate_type_get2
813
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
814
certificate_type_get2.restype = _error_code
815
816
# Remove non-public functions
817
del _error_code, _retry_on_error
818
819
438
820
def call_pipe(connection, # : multiprocessing.Connection
439
821
func, *args, **kwargs):
440
822
"""This function is meant to be called by multiprocessing.Process
441
823
442
824
This function runs func(*args, **kwargs), and writes the resulting
443
825
return value on the provided multiprocessing.Connection.
444
826
"""
445
827
connection.send(func(*args, **kwargs))
446
828
connection.close()
447
829
448
class Client(object):
830
831
class Client:
449
832
"""A representation of a client host served by this server.
450
833
451
834
Attributes:
452
835
approved: bool(); 'None' if not yet approved/disapproved
453
836
approval_delay: datetime.timedelta(); Time to wait for approval
454
837
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
838
checker: multiprocessing.Process(); a running checker process used
839
to see if the client lives. 'None' if no process is
840
running.
841
checker_callback_tag: a GLib event source tag, or None
459
842
checker_command: string; External command which is run to check
460
843
if client lives. %() expansions are done at
461
844
runtime with vars(self) as dict, so that for
462
845
instance %(name)s can be used in the command.
463
checker_initiator_tag: a gobject event source tag, or None
846
checker_initiator_tag: a GLib event source tag, or None
464
847
created: datetime.datetime(); (UTC) object creation
465
848
client_structure: Object describing what attributes a client has
466
849
and is used for storing the client at exit
467
850
current_checker_command: string; current running checker_command
468
disable_initiator_tag: a gobject event source tag, or None
851
disable_initiator_tag: a GLib event source tag, or None
469
852
enabled: bool()
470
853
fingerprint: string (40 or 32 hexadecimal digits); used to
471
uniquely identify the client
854
uniquely identify an OpenPGP client
855
key_id: string (64 hexadecimal digits); used to uniquely identify
856
a client using raw public keys
472
857
host: string; available for use by the checker command
473
858
interval: datetime.timedelta(); How often to start a new checker
474
859
last_approval_request: datetime.datetime(); (UTC) or None
490
875
disabled, or None
491
876
server_settings: The server_settings dict from main()
492
877
"""
493
878
494
879
runtime_expansions = ("approval_delay", "approval_duration",
495
"created", "enabled", "expires",
880
"created", "enabled", "expires", "key_id",
496
881
"fingerprint", "host", "interval",
497
882
"last_approval_request", "last_checked_ok",
498
883
"last_enabled", "name", "timeout")
507
892
"approved_by_default": "True",
508
893
"enabled": "True",
509
894
}
510
895
511
896
@staticmethod
512
897
def config_parser(config):
513
898
"""Construct a new dict of client settings of this form:
520
905
for client_name in config.sections():
521
906
section = dict(config.items(client_name))
522
907
client = settings[client_name] = {}
523
908
524
909
client["host"] = section["host"]
525
910
# Reformat values from string types to Python types
526
911
client["approved_by_default"] = config.getboolean(
527
912
client_name, "approved_by_default")
528
913
client["enabled"] = config.getboolean(client_name,
529
914
"enabled")
530
531
# Uppercase and remove spaces from fingerprint for later
532
# comparison purposes with return value from the
533
# fingerprint() function
915
916
# Uppercase and remove spaces from key_id and fingerprint
917
# for later comparison purposes with return value from the
918
# key_id() and fingerprint() functions
919
client["key_id"] = (section.get("key_id", "").upper()
920
.replace(" ", ""))
534
921
client["fingerprint"] = (section["fingerprint"].upper()
535
922
.replace(" ", ""))
536
923
if "secret" in section:
537
client["secret"] = section["secret"].decode("base64")
924
client["secret"] = codecs.decode(section["secret"]
925
.encode("utf-8"),
926
"base64")
538
927
elif "secfile" in section:
539
928
with open(os.path.expanduser(os.path.expandvars
540
929
(section["secfile"])),
555
944
client["last_approval_request"] = None
556
945
client["last_checked_ok"] = None
557
946
client["last_checker_status"] = -2
558
947
559
948
return settings
560
561
def __init__(self, settings, name = None, server_settings=None):
949
950
def __init__(self, settings, name=None, server_settings=None):
562
951
self.name = name
563
952
if server_settings is None:
564
953
server_settings = {}
566
955
# adding all client settings
567
956
for setting, value in settings.items():
568
957
setattr(self, setting, value)
569
958
570
959
if self.enabled:
571
960
if not hasattr(self, "last_enabled"):
572
961
self.last_enabled = datetime.datetime.utcnow()
576
965
else:
577
966
self.last_enabled = None
578
967
self.expires = None
579
968
580
969
logger.debug("Creating client %r", self.name)
970
logger.debug(" Key ID: %s", self.key_id)
581
971
logger.debug(" Fingerprint: %s", self.fingerprint)
582
972
self.created = settings.get("created",
583
973
datetime.datetime.utcnow())
584
974
585
975
# attributes specific for this server instance
586
976
self.checker = None
587
977
self.checker_initiator_tag = None
593
983
self.changedstate = multiprocessing_manager.Condition(
594
984
multiprocessing_manager.Lock())
595
985
self.client_structure = [attr
596
for attr in self.__dict__.iterkeys()
986
for attr in self.__dict__.keys()
597
987
if not attr.startswith("_")]
598
988
self.client_structure.append("client_structure")
599
989
600
990
for name, t in inspect.getmembers(
601
991
type(self), lambda obj: isinstance(obj, property)):
602
992
if not name.startswith("_"):
603
993
self.client_structure.append(name)
604
994
605
995
# Send notice to process children that client state has changed
606
996
def send_changedstate(self):
607
997
with self.changedstate:
608
998
self.changedstate.notify_all()
609
999
610
1000
def enable(self):
611
1001
"""Start this client's checker and timeout hooks"""
612
1002
if getattr(self, "enabled", False):
617
1007
self.last_enabled = datetime.datetime.utcnow()
618
1008
self.init_checker()
619
1009
self.send_changedstate()
620
1010
621
1011
def disable(self, quiet=True):
622
1012
"""Disable this client."""
623
1013
if not getattr(self, "enabled", False):
625
1015
if not quiet:
626
1016
logger.info("Disabling client %s", self.name)
627
1017
if getattr(self, "disable_initiator_tag", None) is not None:
628
gobject.source_remove(self.disable_initiator_tag)
1018
GLib.source_remove(self.disable_initiator_tag)
629
1019
self.disable_initiator_tag = None
630
1020
self.expires = None
631
1021
if getattr(self, "checker_initiator_tag", None) is not None:
632
gobject.source_remove(self.checker_initiator_tag)
1022
GLib.source_remove(self.checker_initiator_tag)
633
1023
self.checker_initiator_tag = None
634
1024
self.stop_checker()
635
1025
self.enabled = False
636
1026
if not quiet:
637
1027
self.send_changedstate()
638
# Do not run this again if called by a gobject.timeout_add
1028
# Do not run this again if called by a GLib.timeout_add
639
1029
return False
640
1030
641
1031
def __del__(self):
642
1032
self.disable()
643
1033
644
1034
def init_checker(self):
645
1035
# Schedule a new checker to be started an 'interval' from now,
646
1036
# and every interval from then on.
647
1037
if self.checker_initiator_tag is not None:
648
gobject.source_remove(self.checker_initiator_tag)
649
self.checker_initiator_tag = gobject.timeout_add(
1038
GLib.source_remove(self.checker_initiator_tag)
1039
self.checker_initiator_tag = GLib.timeout_add(
650
1040
int(self.interval.total_seconds() * 1000),
651
1041
self.start_checker)
652
1042
# Schedule a disable() when 'timeout' has passed
653
1043
if self.disable_initiator_tag is not None:
654
gobject.source_remove(self.disable_initiator_tag)
655
self.disable_initiator_tag = gobject.timeout_add(
1044
GLib.source_remove(self.disable_initiator_tag)
1045
self.disable_initiator_tag = GLib.timeout_add(
656
1046
int(self.timeout.total_seconds() * 1000), self.disable)
657
1047
# Also start a new checker *right now*.
658
1048
self.start_checker()
659
1049
660
1050
def checker_callback(self, source, condition, connection,
661
1051
command):
662
1052
"""The checker has completed, so take appropriate actions."""
663
self.checker_callback_tag = None
664
self.checker = None
665
1053
# Read return code from connection (see call_pipe)
666
1054
returncode = connection.recv()
667
1055
connection.close()
668
1056
self.checker.join()
1057
self.checker_callback_tag = None
1058
self.checker = None
1059
669
1060
if returncode >= 0:
670
1061
self.last_checker_status = returncode
671
1062
self.last_checker_signal = None
681
1072
logger.warning("Checker for %(name)s crashed?",
682
1073
vars(self))
683
1074
return False
684
1075
685
1076
def checked_ok(self):
686
1077
"""Assert that the client has been seen, alive and well."""
687
1078
self.last_checked_ok = datetime.datetime.utcnow()
688
1079
self.last_checker_status = 0
689
1080
self.last_checker_signal = None
690
1081
self.bump_timeout()
691
1082
692
1083
def bump_timeout(self, timeout=None):
693
1084
"""Bump up the timeout for this client."""
694
1085
if timeout is None:
695
1086
timeout = self.timeout
696
1087
if self.disable_initiator_tag is not None:
697
gobject.source_remove(self.disable_initiator_tag)
1088
GLib.source_remove(self.disable_initiator_tag)
698
1089
self.disable_initiator_tag = None
699
1090
if getattr(self, "enabled", False):
700
self.disable_initiator_tag = gobject.timeout_add(
1091
self.disable_initiator_tag = GLib.timeout_add(
701
1092
int(timeout.total_seconds() * 1000), self.disable)
702
1093
self.expires = datetime.datetime.utcnow() + timeout
703
1094
704
1095
def need_approval(self):
705
1096
self.last_approval_request = datetime.datetime.utcnow()
706
1097
707
1098
def start_checker(self):
708
1099
"""Start a new checker subprocess if one is not running.
709
1100
710
1101
If a checker already exists, leave it running and do
711
1102
nothing."""
712
1103
# The reason for not killing a running checker is that if we
717
1108
# checkers alone, the checker would have to take more time
718
1109
# than 'timeout' for the client to be disabled, which is as it
719
1110
# should be.
720
1111
721
1112
if self.checker is not None and not self.checker.is_alive():
722
1113
logger.warning("Checker was not alive; joining")
723
1114
self.checker.join()
727
1118
# Escape attributes for the shell
728
1119
escaped_attrs = {
729
1120
attr: re.escape(str(getattr(self, attr)))
730
for attr in self.runtime_expansions }
1121
for attr in self.runtime_expansions}
731
1122
try:
732
1123
command = self.checker_command % escaped_attrs
733
1124
except TypeError as error:
745
1136
# The exception is when not debugging but nevertheless
746
1137
# running in the foreground; use the previously
747
1138
# created wnull.
748
popen_args = { "close_fds": True,
749
"shell": True,
750
"cwd": "/" }
1139
popen_args = {"close_fds": True,
1140
"shell": True,
1141
"cwd": "/"}
751
1142
if (not self.server_settings["debug"]
752
1143
and self.server_settings["foreground"]):
753
1144
popen_args.update({"stdout": wnull,
754
"stderr": wnull })
755
pipe = multiprocessing.Pipe(duplex = False)
1145
"stderr": wnull})
1146
pipe = multiprocessing.Pipe(duplex=False)
756
1147
self.checker = multiprocessing.Process(
757
target = call_pipe,
758
args = (pipe[1], subprocess.call, command),
759
kwargs = popen_args)
1148
target=call_pipe,
1149
args=(pipe[1], subprocess.call, command),
1150
kwargs=popen_args)
760
1151
self.checker.start()
761
self.checker_callback_tag = gobject.io_add_watch(
762
pipe[0].fileno(), gobject.IO_IN,
1152
self.checker_callback_tag = GLib.io_add_watch(
1153
pipe[0].fileno(), GLib.PRIORITY_DEFAULT, GLib.IO_IN,
763
1154
self.checker_callback, pipe[0], command)
764
# Re-run this periodically if run by gobject.timeout_add
1155
# Re-run this periodically if run by GLib.timeout_add
765
1156
return True
766
1157
767
1158
def stop_checker(self):
768
1159
"""Force the checker process, if any, to stop."""
769
1160
if self.checker_callback_tag:
770
gobject.source_remove(self.checker_callback_tag)
1161
GLib.source_remove(self.checker_callback_tag)
771
1162
self.checker_callback_tag = None
772
1163
if getattr(self, "checker", None) is None:
773
1164
return
782
1173
byte_arrays=False):
783
1174
"""Decorators for marking methods of a DBusObjectWithProperties to
784
1175
become properties on the D-Bus.
785
1176
786
1177
The decorated method will be called with no arguments by "Get"
787
1178
and with one argument by "Set".
788
1179
789
1180
The parameters, where they are supported, are the same as
790
1181
dbus.service.method, except there is only "signature", since the
791
1182
type from Get() and the type sent to Set() is the same.
795
1186
if byte_arrays and signature != "ay":
796
1187
raise ValueError("Byte arrays not supported for non-'ay'"
797
1188
" signature {!r}".format(signature))
798
1189
799
1190
def decorator(func):
800
1191
func._dbus_is_property = True
801
1192
func._dbus_interface = dbus_interface
804
1195
func._dbus_name = func.__name__
805
1196
if func._dbus_name.endswith("_dbus_property"):
806
1197
func._dbus_name = func._dbus_name[:-14]
807
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
1198
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
808
1199
return func
809
1200
810
1201
return decorator
811
1202
812
1203
813
1204
def dbus_interface_annotations(dbus_interface):
814
1205
"""Decorator for marking functions returning interface annotations
815
1206
816
1207
Usage:
817
1208
818
1209
@dbus_interface_annotations("org.example.Interface")
819
1210
def _foo(self): # Function name does not matter
820
1211
return {"org.freedesktop.DBus.Deprecated": "true",
821
1212
"org.freedesktop.DBus.Property.EmitsChangedSignal":
822
1213
"false"}
823
1214
"""
824
1215
825
1216
def decorator(func):
826
1217
func._dbus_is_interface = True
827
1218
func._dbus_interface = dbus_interface
828
1219
func._dbus_name = dbus_interface
829
1220
return func
830
1221
831
1222
return decorator
832
1223
833
1224
834
1225
def dbus_annotations(annotations):
835
1226
"""Decorator to annotate D-Bus methods, signals or properties
836
1227
Usage:
837
1228
838
1229
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
839
1230
"org.freedesktop.DBus.Property."
840
1231
"EmitsChangedSignal": "false"})
842
1233
access="r")
843
1234
def Property_dbus_property(self):
844
1235
return dbus.Boolean(False)
1236
1237
See also the DBusObjectWithAnnotations class.
845
1238
"""
846
1239
847
1240
def decorator(func):
848
1241
func._dbus_annotations = annotations
849
1242
return func
850
1243
851
1244
return decorator
852
1245
853
1246
869
1262
pass
870
1263
871
1264
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.
1265
class DBusObjectWithAnnotations(dbus.service.Object):
1266
"""A D-Bus object with annotations.
1267
1268
Classes inheriting from this can use the dbus_annotations
1269
decorator to add annotations to methods or signals.
878
1270
"""
879
1271
880
1272
@staticmethod
881
1273
def _is_dbus_thing(thing):
882
1274
"""Returns a function testing if an attribute is a D-Bus thing
883
1275
884
1276
If called like _is_dbus_thing("method") it returns a function
885
1277
suitable for use as predicate to inspect.getmembers().
886
1278
"""
887
1279
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
888
1280
False)
889
1281
890
1282
def _get_all_dbus_things(self, thing):
891
1283
"""Returns a generator of (name, attribute) pairs
892
1284
"""
895
1287
for cls in self.__class__.__mro__
896
1288
for name, athing in
897
1289
inspect.getmembers(cls, self._is_dbus_thing(thing)))
898
1290
1291
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1292
out_signature="s",
1293
path_keyword='object_path',
1294
connection_keyword='connection')
1295
def Introspect(self, object_path, connection):
1296
"""Overloading of standard D-Bus method.
1297
1298
Inserts annotation tags on methods and signals.
1299
"""
1300
xmlstring = dbus.service.Object.Introspect(self, object_path,
1301
connection)
1302
try:
1303
document = xml.dom.minidom.parseString(xmlstring)
1304
1305
for if_tag in document.getElementsByTagName("interface"):
1306
# Add annotation tags
1307
for typ in ("method", "signal"):
1308
for tag in if_tag.getElementsByTagName(typ):
1309
annots = dict()
1310
for name, prop in (self.
1311
_get_all_dbus_things(typ)):
1312
if (name == tag.getAttribute("name")
1313
and prop._dbus_interface
1314
== if_tag.getAttribute("name")):
1315
annots.update(getattr(
1316
prop, "_dbus_annotations", {}))
1317
for name, value in annots.items():
1318
ann_tag = document.createElement(
1319
"annotation")
1320
ann_tag.setAttribute("name", name)
1321
ann_tag.setAttribute("value", value)
1322
tag.appendChild(ann_tag)
1323
# Add interface annotation tags
1324
for annotation, value in dict(
1325
itertools.chain.from_iterable(
1326
annotations().items()
1327
for name, annotations
1328
in self._get_all_dbus_things("interface")
1329
if name == if_tag.getAttribute("name")
1330
)).items():
1331
ann_tag = document.createElement("annotation")
1332
ann_tag.setAttribute("name", annotation)
1333
ann_tag.setAttribute("value", value)
1334
if_tag.appendChild(ann_tag)
1335
# Fix argument name for the Introspect method itself
1336
if (if_tag.getAttribute("name")
1337
== dbus.INTROSPECTABLE_IFACE):
1338
for cn in if_tag.getElementsByTagName("method"):
1339
if cn.getAttribute("name") == "Introspect":
1340
for arg in cn.getElementsByTagName("arg"):
1341
if (arg.getAttribute("direction")
1342
== "out"):
1343
arg.setAttribute("name",
1344
"xml_data")
1345
xmlstring = document.toxml("utf-8")
1346
document.unlink()
1347
except (AttributeError, xml.dom.DOMException,
1348
xml.parsers.expat.ExpatError) as error:
1349
logger.error("Failed to override Introspection method",
1350
exc_info=error)
1351
return xmlstring
1352
1353
1354
class DBusObjectWithProperties(DBusObjectWithAnnotations):
1355
"""A D-Bus object with properties.
1356
1357
Classes inheriting from this can use the dbus_service_property
1358
decorator to expose methods as D-Bus properties. It exposes the
1359
standard Get(), Set(), and GetAll() methods on the D-Bus.
1360
"""
1361
899
1362
def _get_dbus_property(self, interface_name, property_name):
900
1363
"""Returns a bound method if one exists which is a D-Bus
901
1364
property with the specified name and interface.
906
1369
if (value._dbus_name == property_name
907
1370
and value._dbus_interface == interface_name):
908
1371
return value.__get__(self)
909
1372
910
1373
# No such property
911
1374
raise DBusPropertyNotFound("{}:{}.{}".format(
912
1375
self.dbus_object_path, interface_name, property_name))
913
1376
1377
@classmethod
1378
def _get_all_interface_names(cls):
1379
"""Get a sequence of all interfaces supported by an object"""
1380
return (name for name in set(getattr(getattr(x, attr),
1381
"_dbus_interface", None)
1382
for x in (inspect.getmro(cls))
1383
for attr in dir(x))
1384
if name is not None)
1385
914
1386
@dbus.service.method(dbus.PROPERTIES_IFACE,
915
1387
in_signature="ss",
916
1388
out_signature="v")
924
1396
if not hasattr(value, "variant_level"):
925
1397
return value
926
1398
return type(value)(value, variant_level=value.variant_level+1)
927
1399
928
1400
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
929
1401
def Set(self, interface_name, property_name, value):
930
1402
"""Standard D-Bus property Set() method, see D-Bus standard.
942
1414
value = dbus.ByteArray(b''.join(chr(byte)
943
1415
for byte in value))
944
1416
prop(value)
945
1417
946
1418
@dbus.service.method(dbus.PROPERTIES_IFACE,
947
1419
in_signature="s",
948
1420
out_signature="a{sv}")
949
1421
def GetAll(self, interface_name):
950
1422
"""Standard D-Bus property GetAll() method, see D-Bus
951
1423
standard.
952
1424
953
1425
Note: Will not include properties with access="write".
954
1426
"""
955
1427
properties = {}
966
1438
properties[name] = value
967
1439
continue
968
1440
properties[name] = type(value)(
969
value, variant_level = value.variant_level + 1)
1441
value, variant_level=value.variant_level + 1)
970
1442
return dbus.Dictionary(properties, signature="sv")
971
1443
972
1444
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
973
1445
def PropertiesChanged(self, interface_name, changed_properties,
974
1446
invalidated_properties):
976
1448
standard.
977
1449
"""
978
1450
pass
979
1451
980
1452
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
981
1453
out_signature="s",
982
1454
path_keyword='object_path',
983
1455
connection_keyword='connection')
984
1456
def Introspect(self, object_path, connection):
985
1457
"""Overloading of standard D-Bus method.
986
1458
987
1459
Inserts property tags and interface annotation tags.
988
1460
"""
989
xmlstring = dbus.service.Object.Introspect(self, object_path,
990
connection)
1461
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1462
object_path,
1463
connection)
991
1464
try:
992
1465
document = xml.dom.minidom.parseString(xmlstring)
993
1466
994
1467
def make_tag(document, name, prop):
995
1468
e = document.createElement("property")
996
1469
e.setAttribute("name", name)
997
1470
e.setAttribute("type", prop._dbus_signature)
998
1471
e.setAttribute("access", prop._dbus_access)
999
1472
return e
1000
1473
1001
1474
for if_tag in document.getElementsByTagName("interface"):
1002
1475
# Add property tags
1003
1476
for tag in (make_tag(document, name, prop)
1006
1479
if prop._dbus_interface
1007
1480
== if_tag.getAttribute("name")):
1008
1481
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)
1482
# Add annotation tags for properties
1483
for tag in if_tag.getElementsByTagName("property"):
1484
annots = dict()
1485
for name, prop in self._get_all_dbus_things(
1486
"property"):
1487
if (name == tag.getAttribute("name")
1488
and prop._dbus_interface
1489
== if_tag.getAttribute("name")):
1490
annots.update(getattr(
1491
prop, "_dbus_annotations", {}))
1492
for name, value in annots.items():
1493
ann_tag = document.createElement(
1494
"annotation")
1495
ann_tag.setAttribute("name", name)
1496
ann_tag.setAttribute("value", value)
1497
tag.appendChild(ann_tag)
1038
1498
# Add the names to the return values for the
1039
1499
# "org.freedesktop.DBus.Properties" methods
1040
1500
if (if_tag.getAttribute("name")
1059
1519
return xmlstring
1060
1520
1061
1521
1522
try:
1523
dbus.OBJECT_MANAGER_IFACE
1524
except AttributeError:
1525
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1526
1527
1528
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1529
"""A D-Bus object with an ObjectManager.
1530
1531
Classes inheriting from this exposes the standard
1532
GetManagedObjects call and the InterfacesAdded and
1533
InterfacesRemoved signals on the standard
1534
"org.freedesktop.DBus.ObjectManager" interface.
1535
1536
Note: No signals are sent automatically; they must be sent
1537
manually.
1538
"""
1539
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1540
out_signature="a{oa{sa{sv}}}")
1541
def GetManagedObjects(self):
1542
"""This function must be overridden"""
1543
raise NotImplementedError()
1544
1545
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1546
signature="oa{sa{sv}}")
1547
def InterfacesAdded(self, object_path, interfaces_and_properties):
1548
pass
1549
1550
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1551
def InterfacesRemoved(self, object_path, interfaces):
1552
pass
1553
1554
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1555
out_signature="s",
1556
path_keyword='object_path',
1557
connection_keyword='connection')
1558
def Introspect(self, object_path, connection):
1559
"""Overloading of standard D-Bus method.
1560
1561
Override return argument name of GetManagedObjects to be
1562
"objpath_interfaces_and_properties"
1563
"""
1564
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1565
object_path,
1566
connection)
1567
try:
1568
document = xml.dom.minidom.parseString(xmlstring)
1569
1570
for if_tag in document.getElementsByTagName("interface"):
1571
# Fix argument name for the GetManagedObjects method
1572
if (if_tag.getAttribute("name")
1573
== dbus.OBJECT_MANAGER_IFACE):
1574
for cn in if_tag.getElementsByTagName("method"):
1575
if (cn.getAttribute("name")
1576
== "GetManagedObjects"):
1577
for arg in cn.getElementsByTagName("arg"):
1578
if (arg.getAttribute("direction")
1579
== "out"):
1580
arg.setAttribute(
1581
"name",
1582
"objpath_interfaces"
1583
"_and_properties")
1584
xmlstring = document.toxml("utf-8")
1585
document.unlink()
1586
except (AttributeError, xml.dom.DOMException,
1587
xml.parsers.expat.ExpatError) as error:
1588
logger.error("Failed to override Introspection method",
1589
exc_info=error)
1590
return xmlstring
1591
1592
1062
1593
def datetime_to_dbus(dt, variant_level=0):
1063
1594
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1064
1595
if dt is None:
1065
return dbus.String("", variant_level = variant_level)
1596
return dbus.String("", variant_level=variant_level)
1066
1597
return dbus.String(dt.isoformat(), variant_level=variant_level)
1067
1598
1068
1599
1071
1602
dbus.service.Object, it will add alternate D-Bus attributes with
1072
1603
interface names according to the "alt_interface_names" mapping.
1073
1604
Usage:
1074
1605
1075
1606
@alternate_dbus_interfaces({"org.example.Interface":
1076
1607
"net.example.AlternateInterface"})
1077
1608
class SampleDBusObject(dbus.service.Object):
1078
1609
@dbus.service.method("org.example.Interface")
1079
1610
def SampleDBusMethod():
1080
1611
pass
1081
1612
1082
1613
The above "SampleDBusMethod" on "SampleDBusObject" will be
1083
1614
reachable via two interfaces: "org.example.Interface" and
1084
1615
"net.example.AlternateInterface", the latter of which will have
1085
1616
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1086
1617
"true", unless "deprecate" is passed with a False value.
1087
1618
1088
1619
This works for methods and signals, and also for D-Bus properties
1089
1620
(from DBusObjectWithProperties) and interfaces (from the
1090
1621
dbus_interface_annotations decorator).
1091
1622
"""
1092
1623
1093
1624
def wrapper(cls):
1094
1625
for orig_interface_name, alt_interface_name in (
1095
1626
alt_interface_names.items()):
1110
1641
interface_names.add(alt_interface)
1111
1642
# Is this a D-Bus signal?
1112
1643
if getattr(attribute, "_dbus_is_signal", False):
1644
# Extract the original non-method undecorated
1645
# function by black magic
1113
1646
if sys.version_info.major == 2:
1114
# Extract the original non-method undecorated
1115
# function by black magic
1116
1647
nonmethod_func = (dict(
1117
1648
zip(attribute.func_code.co_freevars,
1118
1649
attribute.__closure__))
1119
1650
["func"].cell_contents)
1120
1651
else:
1121
nonmethod_func = attribute
1652
nonmethod_func = (dict(
1653
zip(attribute.__code__.co_freevars,
1654
attribute.__closure__))
1655
["func"].cell_contents)
1122
1656
# Create a new, but exactly alike, function
1123
1657
# object, and decorate it to be a new D-Bus signal
1124
1658
# 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__)
1659
new_function = copy_function(nonmethod_func)
1139
1660
new_function = (dbus.service.signal(
1140
1661
alt_interface,
1141
1662
attribute._dbus_signature)(new_function))
1145
1666
attribute._dbus_annotations)
1146
1667
except AttributeError:
1147
1668
pass
1669
1148
1670
# Define a creator of a function to call both the
1149
1671
# original and alternate functions, so both the
1150
1672
# original and alternate signals gets sent when
1153
1675
"""This function is a scope container to pass
1154
1676
func1 and func2 to the "call_both" function
1155
1677
outside of its arguments"""
1156
1678
1679
@functools.wraps(func2)
1157
1680
def call_both(*args, **kwargs):
1158
1681
"""This function will emit two D-Bus
1159
1682
signals by calling func1 and func2"""
1160
1683
func1(*args, **kwargs)
1161
1684
func2(*args, **kwargs)
1162
1685
# Make wrapper function look like a D-Bus
1686
# signal
1687
for name, attr in inspect.getmembers(func2):
1688
if name.startswith("_dbus_"):
1689
setattr(call_both, name, attr)
1690
1163
1691
return call_both
1164
1692
# Create the "call_both" function and add it to
1165
1693
# the class
1175
1703
alt_interface,
1176
1704
attribute._dbus_in_signature,
1177
1705
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)))
1706
(copy_function(attribute)))
1183
1707
# Copy annotations, if any
1184
1708
try:
1185
1709
attr[attrname]._dbus_annotations = dict(
1197
1721
attribute._dbus_access,
1198
1722
attribute._dbus_get_args_options
1199
1723
["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)))
1724
(copy_function(attribute)))
1206
1725
# Copy annotations, if any
1207
1726
try:
1208
1727
attr[attrname]._dbus_annotations = dict(
1217
1736
# to the class.
1218
1737
attr[attrname] = (
1219
1738
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)))
1739
(copy_function(attribute)))
1225
1740
if deprecate:
1226
1741
# Deprecate all alternate interfaces
1227
iname="_AlternateDBusNames_interface_annotation{}"
1742
iname = "_AlternateDBusNames_interface_annotation{}"
1228
1743
for interface_name in interface_names:
1229
1744
1230
1745
@dbus_interface_annotations(interface_name)
1231
1746
def func(self):
1232
return { "org.freedesktop.DBus.Deprecated":
1233
"true" }
1747
return {"org.freedesktop.DBus.Deprecated":
1748
"true"}
1234
1749
# Find an unused name
1235
1750
for aname in (iname.format(i)
1236
1751
for i in itertools.count()):
1240
1755
if interface_names:
1241
1756
# Replace the class with a new subclass of it with
1242
1757
# methods, signals, etc. as created above.
1243
cls = type(b"{}Alternate".format(cls.__name__),
1244
(cls, ), attr)
1758
if sys.version_info.major == 2:
1759
cls = type(b"{}Alternate".format(cls.__name__),
1760
(cls, ), attr)
1761
else:
1762
cls = type("{}Alternate".format(cls.__name__),
1763
(cls, ), attr)
1245
1764
return cls
1246
1765
1247
1766
return wrapper
1248
1767
1249
1768
1251
1770
"se.bsnet.fukt.Mandos"})
1252
1771
class ClientDBus(Client, DBusObjectWithProperties):
1253
1772
"""A Client class using D-Bus
1254
1773
1255
1774
Attributes:
1256
1775
dbus_object_path: dbus.ObjectPath
1257
1776
bus: dbus.SystemBus()
1258
1777
"""
1259
1778
1260
1779
runtime_expansions = (Client.runtime_expansions
1261
1780
+ ("dbus_object_path", ))
1262
1781
1263
1782
_interface = "se.recompile.Mandos.Client"
1264
1783
1265
1784
# dbus.service.Object doesn't use super(), so we can't either.
1266
1267
def __init__(self, bus = None, *args, **kwargs):
1785
1786
def __init__(self, bus=None, *args, **kwargs):
1268
1787
self.bus = bus
1269
1788
Client.__init__(self, *args, **kwargs)
1270
1789
# Only now, when this client is initialized, can it show up on
1276
1795
"/clients/" + client_object_name)
1277
1796
DBusObjectWithProperties.__init__(self, self.bus,
1278
1797
self.dbus_object_path)
1279
1798
1280
1799
def notifychangeproperty(transform_func, dbus_name,
1281
1800
type_func=lambda x: x,
1282
1801
variant_level=1,
1284
1803
_interface=_interface):
1285
1804
""" Modify a variable so that it's a property which announces
1286
1805
its changes to DBus.
1287
1806
1288
1807
transform_fun: Function that takes a value and a variant_level
1289
1808
and transforms it to a D-Bus type.
1290
1809
dbus_name: D-Bus name of the variable
1293
1812
variant_level: D-Bus variant level. Default: 1
1294
1813
"""
1295
1814
attrname = "_{}".format(dbus_name)
1296
1815
1297
1816
def setter(self, value):
1298
1817
if hasattr(self, "dbus_object_path"):
1299
1818
if (not hasattr(self, attrname) or
1306
1825
else:
1307
1826
dbus_value = transform_func(
1308
1827
type_func(value),
1309
variant_level = variant_level)
1828
variant_level=variant_level)
1310
1829
self.PropertyChanged(dbus.String(dbus_name),
1311
1830
dbus_value)
1312
1831
self.PropertiesChanged(
1313
1832
_interface,
1314
dbus.Dictionary({ dbus.String(dbus_name):
1315
dbus_value }),
1833
dbus.Dictionary({dbus.String(dbus_name):
1834
dbus_value}),
1316
1835
dbus.Array())
1317
1836
setattr(self, attrname, value)
1318
1837
1319
1838
return property(lambda self: getattr(self, attrname), setter)
1320
1839
1321
1840
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1322
1841
approvals_pending = notifychangeproperty(dbus.Boolean,
1323
1842
"ApprovalPending",
1324
type_func = bool)
1843
type_func=bool)
1325
1844
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1326
1845
last_enabled = notifychangeproperty(datetime_to_dbus,
1327
1846
"LastEnabled")
1328
1847
checker = notifychangeproperty(
1329
1848
dbus.Boolean, "CheckerRunning",
1330
type_func = lambda checker: checker is not None)
1849
type_func=lambda checker: checker is not None)
1331
1850
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1332
1851
"LastCheckedOK")
1333
1852
last_checker_status = notifychangeproperty(dbus.Int16,
1338
1857
"ApprovedByDefault")
1339
1858
approval_delay = notifychangeproperty(
1340
1859
dbus.UInt64, "ApprovalDelay",
1341
type_func = lambda td: td.total_seconds() * 1000)
1860
type_func=lambda td: td.total_seconds() * 1000)
1342
1861
approval_duration = notifychangeproperty(
1343
1862
dbus.UInt64, "ApprovalDuration",
1344
type_func = lambda td: td.total_seconds() * 1000)
1863
type_func=lambda td: td.total_seconds() * 1000)
1345
1864
host = notifychangeproperty(dbus.String, "Host")
1346
1865
timeout = notifychangeproperty(
1347
1866
dbus.UInt64, "Timeout",
1348
type_func = lambda td: td.total_seconds() * 1000)
1867
type_func=lambda td: td.total_seconds() * 1000)
1349
1868
extended_timeout = notifychangeproperty(
1350
1869
dbus.UInt64, "ExtendedTimeout",
1351
type_func = lambda td: td.total_seconds() * 1000)
1870
type_func=lambda td: td.total_seconds() * 1000)
1352
1871
interval = notifychangeproperty(
1353
1872
dbus.UInt64, "Interval",
1354
type_func = lambda td: td.total_seconds() * 1000)
1873
type_func=lambda td: td.total_seconds() * 1000)
1355
1874
checker_command = notifychangeproperty(dbus.String, "Checker")
1356
1875
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1357
1876
invalidate_only=True)
1358
1877
1359
1878
del notifychangeproperty
1360
1879
1361
1880
def __del__(self, *args, **kwargs):
1362
1881
try:
1363
1882
self.remove_from_connection()
1366
1885
if hasattr(DBusObjectWithProperties, "__del__"):
1367
1886
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1368
1887
Client.__del__(self, *args, **kwargs)
1369
1888
1370
1889
def checker_callback(self, source, condition,
1371
1890
connection, command, *args, **kwargs):
1372
1891
ret = Client.checker_callback(self, source, condition,
1376
1895
if exitstatus >= 0:
1377
1896
# Emit D-Bus signal
1378
1897
self.CheckerCompleted(dbus.Int16(exitstatus),
1379
dbus.Int64(0),
1898
# This is specific to GNU libC
1899
dbus.Int64(exitstatus << 8),
1380
1900
dbus.String(command))
1381
1901
else:
1382
1902
# Emit D-Bus signal
1383
1903
self.CheckerCompleted(dbus.Int16(-1),
1384
1904
dbus.Int64(
1385
self.last_checker_signal),
1905
# This is specific to GNU libC
1906
(exitstatus << 8)
1907
| self.last_checker_signal),
1386
1908
dbus.String(command))
1387
1909
return ret
1388
1910
1389
1911
def start_checker(self, *args, **kwargs):
1390
1912
old_checker_pid = getattr(self.checker, "pid", None)
1391
1913
r = Client.start_checker(self, *args, **kwargs)
1395
1917
# Emit D-Bus signal
1396
1918
self.CheckerStarted(self.current_checker_command)
1397
1919
return r
1398
1920
1399
1921
def _reset_approved(self):
1400
1922
self.approved = None
1401
1923
return False
1402
1924
1403
1925
def approve(self, value=True):
1404
1926
self.approved = value
1405
gobject.timeout_add(int(self.approval_duration.total_seconds()
1406
* 1000), self._reset_approved)
1927
GLib.timeout_add(int(self.approval_duration.total_seconds()
1928
* 1000), self._reset_approved)
1407
1929
self.send_changedstate()
1408
1409
## D-Bus methods, signals & properties
1410
1411
## Interfaces
1412
1413
## Signals
1414
1930
1931
# D-Bus methods, signals & properties
1932
1933
# Interfaces
1934
1935
# Signals
1936
1415
1937
# CheckerCompleted - signal
1416
1938
@dbus.service.signal(_interface, signature="nxs")
1417
1939
def CheckerCompleted(self, exitcode, waitstatus, command):
1418
1940
"D-Bus signal"
1419
1941
pass
1420
1942
1421
1943
# CheckerStarted - signal
1422
1944
@dbus.service.signal(_interface, signature="s")
1423
1945
def CheckerStarted(self, command):
1424
1946
"D-Bus signal"
1425
1947
pass
1426
1948
1427
1949
# PropertyChanged - signal
1428
1950
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1429
1951
@dbus.service.signal(_interface, signature="sv")
1430
1952
def PropertyChanged(self, property, value):
1431
1953
"D-Bus signal"
1432
1954
pass
1433
1955
1434
1956
# GotSecret - signal
1435
1957
@dbus.service.signal(_interface)
1436
1958
def GotSecret(self):
1439
1961
server to mandos-client
1440
1962
"""
1441
1963
pass
1442
1964
1443
1965
# Rejected - signal
1444
1966
@dbus.service.signal(_interface, signature="s")
1445
1967
def Rejected(self, reason):
1446
1968
"D-Bus signal"
1447
1969
pass
1448
1970
1449
1971
# NeedApproval - signal
1450
1972
@dbus.service.signal(_interface, signature="tb")
1451
1973
def NeedApproval(self, timeout, default):
1452
1974
"D-Bus signal"
1453
1975
return self.need_approval()
1454
1455
## Methods
1456
1976
1977
# Methods
1978
1457
1979
# Approve - method
1458
1980
@dbus.service.method(_interface, in_signature="b")
1459
1981
def Approve(self, value):
1460
1982
self.approve(value)
1461
1983
1462
1984
# CheckedOK - method
1463
1985
@dbus.service.method(_interface)
1464
1986
def CheckedOK(self):
1465
1987
self.checked_ok()
1466
1988
1467
1989
# Enable - method
1990
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1468
1991
@dbus.service.method(_interface)
1469
1992
def Enable(self):
1470
1993
"D-Bus method"
1471
1994
self.enable()
1472
1995
1473
1996
# StartChecker - method
1997
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1474
1998
@dbus.service.method(_interface)
1475
1999
def StartChecker(self):
1476
2000
"D-Bus method"
1477
2001
self.start_checker()
1478
2002
1479
2003
# Disable - method
2004
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1480
2005
@dbus.service.method(_interface)
1481
2006
def Disable(self):
1482
2007
"D-Bus method"
1483
2008
self.disable()
1484
2009
1485
2010
# StopChecker - method
2011
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1486
2012
@dbus.service.method(_interface)
1487
2013
def StopChecker(self):
1488
2014
self.stop_checker()
1489
1490
## Properties
1491
2015
2016
# Properties
2017
1492
2018
# ApprovalPending - property
1493
2019
@dbus_service_property(_interface, signature="b", access="read")
1494
2020
def ApprovalPending_dbus_property(self):
1495
2021
return dbus.Boolean(bool(self.approvals_pending))
1496
2022
1497
2023
# ApprovedByDefault - property
1498
2024
@dbus_service_property(_interface,
1499
2025
signature="b",
1502
2028
if value is None: # get
1503
2029
return dbus.Boolean(self.approved_by_default)
1504
2030
self.approved_by_default = bool(value)
1505
2031
1506
2032
# ApprovalDelay - property
1507
2033
@dbus_service_property(_interface,
1508
2034
signature="t",
1512
2038
return dbus.UInt64(self.approval_delay.total_seconds()
1513
2039
* 1000)
1514
2040
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1515
2041
1516
2042
# ApprovalDuration - property
1517
2043
@dbus_service_property(_interface,
1518
2044
signature="t",
1522
2048
return dbus.UInt64(self.approval_duration.total_seconds()
1523
2049
* 1000)
1524
2050
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1525
2051
1526
2052
# Name - property
2053
@dbus_annotations(
2054
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1527
2055
@dbus_service_property(_interface, signature="s", access="read")
1528
2056
def Name_dbus_property(self):
1529
2057
return dbus.String(self.name)
1530
2058
2059
# KeyID - property
2060
@dbus_annotations(
2061
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2062
@dbus_service_property(_interface, signature="s", access="read")
2063
def KeyID_dbus_property(self):
2064
return dbus.String(self.key_id)
2065
1531
2066
# Fingerprint - property
2067
@dbus_annotations(
2068
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1532
2069
@dbus_service_property(_interface, signature="s", access="read")
1533
2070
def Fingerprint_dbus_property(self):
1534
2071
return dbus.String(self.fingerprint)
1535
2072
1536
2073
# Host - property
1537
2074
@dbus_service_property(_interface,
1538
2075
signature="s",
1541
2078
if value is None: # get
1542
2079
return dbus.String(self.host)
1543
2080
self.host = str(value)
1544
2081
1545
2082
# Created - property
2083
@dbus_annotations(
2084
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1546
2085
@dbus_service_property(_interface, signature="s", access="read")
1547
2086
def Created_dbus_property(self):
1548
2087
return datetime_to_dbus(self.created)
1549
2088
1550
2089
# LastEnabled - property
1551
2090
@dbus_service_property(_interface, signature="s", access="read")
1552
2091
def LastEnabled_dbus_property(self):
1553
2092
return datetime_to_dbus(self.last_enabled)
1554
2093
1555
2094
# Enabled - property
1556
2095
@dbus_service_property(_interface,
1557
2096
signature="b",
1563
2102
self.enable()
1564
2103
else:
1565
2104
self.disable()
1566
2105
1567
2106
# LastCheckedOK - property
1568
2107
@dbus_service_property(_interface,
1569
2108
signature="s",
1573
2112
self.checked_ok()
1574
2113
return
1575
2114
return datetime_to_dbus(self.last_checked_ok)
1576
2115
1577
2116
# LastCheckerStatus - property
1578
2117
@dbus_service_property(_interface, signature="n", access="read")
1579
2118
def LastCheckerStatus_dbus_property(self):
1580
2119
return dbus.Int16(self.last_checker_status)
1581
2120
1582
2121
# Expires - property
1583
2122
@dbus_service_property(_interface, signature="s", access="read")
1584
2123
def Expires_dbus_property(self):
1585
2124
return datetime_to_dbus(self.expires)
1586
2125
1587
2126
# LastApprovalRequest - property
1588
2127
@dbus_service_property(_interface, signature="s", access="read")
1589
2128
def LastApprovalRequest_dbus_property(self):
1590
2129
return datetime_to_dbus(self.last_approval_request)
1591
2130
1592
2131
# Timeout - property
1593
2132
@dbus_service_property(_interface,
1594
2133
signature="t",
1609
2148
if (getattr(self, "disable_initiator_tag", None)
1610
2149
is None):
1611
2150
return
1612
gobject.source_remove(self.disable_initiator_tag)
1613
self.disable_initiator_tag = gobject.timeout_add(
2151
GLib.source_remove(self.disable_initiator_tag)
2152
self.disable_initiator_tag = GLib.timeout_add(
1614
2153
int((self.expires - now).total_seconds() * 1000),
1615
2154
self.disable)
1616
2155
1617
2156
# ExtendedTimeout - property
1618
2157
@dbus_service_property(_interface,
1619
2158
signature="t",
1623
2162
return dbus.UInt64(self.extended_timeout.total_seconds()
1624
2163
* 1000)
1625
2164
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1626
2165
1627
2166
# Interval - property
1628
2167
@dbus_service_property(_interface,
1629
2168
signature="t",
1636
2175
return
1637
2176
if self.enabled:
1638
2177
# Reschedule checker run
1639
gobject.source_remove(self.checker_initiator_tag)
1640
self.checker_initiator_tag = gobject.timeout_add(
2178
GLib.source_remove(self.checker_initiator_tag)
2179
self.checker_initiator_tag = GLib.timeout_add(
1641
2180
value, self.start_checker)
1642
self.start_checker() # Start one now, too
1643
2181
self.start_checker() # Start one now, too
2182
1644
2183
# Checker - property
1645
2184
@dbus_service_property(_interface,
1646
2185
signature="s",
1649
2188
if value is None: # get
1650
2189
return dbus.String(self.checker_command)
1651
2190
self.checker_command = str(value)
1652
2191
1653
2192
# CheckerRunning - property
1654
2193
@dbus_service_property(_interface,
1655
2194
signature="b",
1661
2200
self.start_checker()
1662
2201
else:
1663
2202
self.stop_checker()
1664
2203
1665
2204
# ObjectPath - property
2205
@dbus_annotations(
2206
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2207
"org.freedesktop.DBus.Deprecated": "true"})
1666
2208
@dbus_service_property(_interface, signature="o", access="read")
1667
2209
def ObjectPath_dbus_property(self):
1668
return self.dbus_object_path # is already a dbus.ObjectPath
1669
2210
return self.dbus_object_path # is already a dbus.ObjectPath
2211
1670
2212
# Secret = property
2213
@dbus_annotations(
2214
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2215
"invalidates"})
1671
2216
@dbus_service_property(_interface,
1672
2217
signature="ay",
1673
2218
access="write",
1674
2219
byte_arrays=True)
1675
2220
def Secret_dbus_property(self, value):
1676
2221
self.secret = bytes(value)
1677
2222
1678
2223
del _interface
1679
2224
1680
2225
1681
class ProxyClient(object):
1682
def __init__(self, child_pipe, fpr, address):
2226
class ProxyClient:
2227
def __init__(self, child_pipe, key_id, fpr, address):
1683
2228
self._pipe = child_pipe
1684
self._pipe.send(('init', fpr, address))
2229
self._pipe.send(('init', key_id, fpr, address))
1685
2230
if not self._pipe.recv():
1686
raise KeyError(fpr)
1687
2231
raise KeyError(key_id or fpr)
2232
1688
2233
def __getattribute__(self, name):
1689
2234
if name == '_pipe':
1690
2235
return super(ProxyClient, self).__getattribute__(name)
1693
2238
if data[0] == 'data':
1694
2239
return data[1]
1695
2240
if data[0] == 'function':
1696
2241
1697
2242
def func(*args, **kwargs):
1698
2243
self._pipe.send(('funcall', name, args, kwargs))
1699
2244
return self._pipe.recv()[1]
1700
2245
1701
2246
return func
1702
2247
1703
2248
def __setattr__(self, name, value):
1704
2249
if name == '_pipe':
1705
2250
return super(ProxyClient, self).__setattr__(name, value)
1708
2253
1709
2254
class ClientHandler(socketserver.BaseRequestHandler, object):
1710
2255
"""A class to handle client connections.
1711
2256
1712
2257
Instantiated once for each connection to handle it.
1713
2258
Note: This will run in its own forked process."""
1714
2259
1715
2260
def handle(self):
1716
2261
with contextlib.closing(self.server.child_pipe) as child_pipe:
1717
2262
logger.info("TCP connection from: %s",
1718
2263
str(self.client_address))
1719
2264
logger.debug("Pipe FD: %d",
1720
2265
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"))
2266
2267
session = gnutls.ClientSession(self.request)
2268
2269
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2270
# "+AES-256-CBC", "+SHA1",
2271
# "+COMP-NULL", "+CTYPE-OPENPGP",
2272
# "+DHE-DSS"))
1734
2273
# Use a fallback default, since this MUST be set.
1735
2274
priority = self.server.gnutls_priority
1736
2275
if priority is None:
1737
2276
priority = "NORMAL"
1738
gnutls.library.functions.gnutls_priority_set_direct(
1739
session._c_object, priority, None)
1740
2277
gnutls.priority_set_direct(session._c_object,
2278
priority.encode("utf-8"),
2279
None)
2280
1741
2281
# Start communication using the Mandos protocol
1742
2282
# Get protocol number
1743
2283
line = self.request.makefile().readline()
1748
2288
except (ValueError, IndexError, RuntimeError) as error:
1749
2289
logger.error("Unknown protocol version: %s", error)
1750
2290
return
1751
2291
1752
2292
# Start GnuTLS connection
1753
2293
try:
1754
2294
session.handshake()
1755
except gnutls.errors.GNUTLSError as error:
2295
except gnutls.Error as error:
1756
2296
logger.warning("Handshake failed: %s", error)
1757
2297
# Do not run session.bye() here: the session is not
1758
2298
# established. Just abandon the request.
1759
2299
return
1760
2300
logger.debug("Handshake succeeded")
1761
2301
1762
2302
approval_required = False
1763
2303
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,
2304
if gnutls.has_rawpk:
2305
fpr = b""
2306
try:
2307
key_id = self.key_id(
2308
self.peer_certificate(session))
2309
except (TypeError, gnutls.Error) as error:
2310
logger.warning("Bad certificate: %s", error)
2311
return
2312
logger.debug("Key ID: %s", key_id)
2313
2314
else:
2315
key_id = b""
2316
try:
2317
fpr = self.fingerprint(
2318
self.peer_certificate(session))
2319
except (TypeError, gnutls.Error) as error:
2320
logger.warning("Bad certificate: %s", error)
2321
return
2322
logger.debug("Fingerprint: %s", fpr)
2323
2324
try:
2325
client = ProxyClient(child_pipe, key_id, fpr,
1775
2326
self.client_address)
1776
2327
except KeyError:
1777
2328
return
1778
2329
1779
2330
if client.approval_delay:
1780
2331
delay = client.approval_delay
1781
2332
client.approvals_pending += 1
1782
2333
approval_required = True
1783
2334
1784
2335
while True:
1785
2336
if not client.enabled:
1786
2337
logger.info("Client %s is disabled",
1789
2340
# Emit D-Bus signal
1790
2341
client.Rejected("Disabled")
1791
2342
return
1792
2343
1793
2344
if client.approved or not client.approval_delay:
1794
#We are approved or approval is disabled
2345
# We are approved or approval is disabled
1795
2346
break
1796
2347
elif client.approved is None:
1797
2348
logger.info("Client %s needs approval",
1808
2359
# Emit D-Bus signal
1809
2360
client.Rejected("Denied")
1810
2361
return
1811
1812
#wait until timeout or approved
2362
2363
# wait until timeout or approved
1813
2364
time = datetime.datetime.now()
1814
2365
client.changedstate.acquire()
1815
2366
client.changedstate.wait(delay.total_seconds())
1828
2379
break
1829
2380
else:
1830
2381
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
2382
2383
try:
2384
session.send(client.secret)
2385
except gnutls.Error as error:
2386
logger.warning("gnutls send failed",
2387
exc_info=error)
2388
return
2389
1845
2390
logger.info("Sending secret to %s", client.name)
1846
2391
# bump the timeout using extended_timeout
1847
2392
client.bump_timeout(client.extended_timeout)
1848
2393
if self.server.use_dbus:
1849
2394
# Emit D-Bus signal
1850
2395
client.GotSecret()
1851
2396
1852
2397
finally:
1853
2398
if approval_required:
1854
2399
client.approvals_pending -= 1
1855
2400
try:
1856
2401
session.bye()
1857
except gnutls.errors.GNUTLSError as error:
2402
except gnutls.Error as error:
1858
2403
logger.warning("GnuTLS bye failed",
1859
2404
exc_info=error)
1860
2405
1861
2406
@staticmethod
1862
2407
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
2408
"Return the peer's certificate as a bytestring"
2409
try:
2410
cert_type = gnutls.certificate_type_get2(session._c_object,
2411
gnutls.CTYPE_PEERS)
2412
except AttributeError:
2413
cert_type = gnutls.certificate_type_get(session._c_object)
2414
if gnutls.has_rawpk:
2415
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2416
else:
2417
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2418
# If not a valid certificate type...
2419
if cert_type not in valid_cert_types:
2420
logger.info("Cert type %r not in %r", cert_type,
2421
valid_cert_types)
2422
# ...return invalid data
2423
return b""
1870
2424
list_size = ctypes.c_uint(1)
1871
cert_list = (gnutls.library.functions
1872
.gnutls_certificate_get_peers
2425
cert_list = (gnutls.certificate_get_peers
1873
2426
(session._c_object, ctypes.byref(list_size)))
1874
2427
if not bool(cert_list) and list_size.value != 0:
1875
raise gnutls.errors.GNUTLSError("error getting peer"
1876
" certificate")
2428
raise gnutls.Error("error getting peer certificate")
1877
2429
if list_size.value == 0:
1878
2430
return None
1879
2431
cert = cert_list[0]
1880
2432
return ctypes.string_at(cert.data, cert.size)
1881
2433
2434
@staticmethod
2435
def key_id(certificate):
2436
"Convert a certificate bytestring to a hexdigit key ID"
2437
# New GnuTLS "datum" with the public key
2438
datum = gnutls.datum_t(
2439
ctypes.cast(ctypes.c_char_p(certificate),
2440
ctypes.POINTER(ctypes.c_ubyte)),
2441
ctypes.c_uint(len(certificate)))
2442
# XXX all these need to be created in the gnutls "module"
2443
# New empty GnuTLS certificate
2444
pubkey = gnutls.pubkey_t()
2445
gnutls.pubkey_init(ctypes.byref(pubkey))
2446
# Import the raw public key into the certificate
2447
gnutls.pubkey_import(pubkey,
2448
ctypes.byref(datum),
2449
gnutls.X509_FMT_DER)
2450
# New buffer for the key ID
2451
buf = ctypes.create_string_buffer(32)
2452
buf_len = ctypes.c_size_t(len(buf))
2453
# Get the key ID from the raw public key into the buffer
2454
gnutls.pubkey_get_key_id(pubkey,
2455
gnutls.KEYID_USE_SHA256,
2456
ctypes.cast(ctypes.byref(buf),
2457
ctypes.POINTER(ctypes.c_ubyte)),
2458
ctypes.byref(buf_len))
2459
# Deinit the certificate
2460
gnutls.pubkey_deinit(pubkey)
2461
2462
# Convert the buffer to a Python bytestring
2463
key_id = ctypes.string_at(buf, buf_len.value)
2464
# Convert the bytestring to hexadecimal notation
2465
hex_key_id = binascii.hexlify(key_id).upper()
2466
return hex_key_id
2467
1882
2468
@staticmethod
1883
2469
def fingerprint(openpgp):
1884
2470
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1885
2471
# New GnuTLS "datum" with the OpenPGP public key
1886
datum = gnutls.library.types.gnutls_datum_t(
2472
datum = gnutls.datum_t(
1887
2473
ctypes.cast(ctypes.c_char_p(openpgp),
1888
2474
ctypes.POINTER(ctypes.c_ubyte)),
1889
2475
ctypes.c_uint(len(openpgp)))
1890
2476
# 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))
2477
crt = gnutls.openpgp_crt_t()
2478
gnutls.openpgp_crt_init(ctypes.byref(crt))
1894
2479
# 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)
2480
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2481
gnutls.OPENPGP_FMT_RAW)
1898
2482
# Verify the self signature in the key
1899
2483
crtverify = ctypes.c_uint()
1900
gnutls.library.functions.gnutls_openpgp_crt_verify_self(
1901
crt, 0, ctypes.byref(crtverify))
2484
gnutls.openpgp_crt_verify_self(crt, 0,
2485
ctypes.byref(crtverify))
1902
2486
if crtverify.value != 0:
1903
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1904
raise gnutls.errors.CertificateSecurityError(
1905
"Verify failed")
2487
gnutls.openpgp_crt_deinit(crt)
2488
raise gnutls.CertificateSecurityError(code
2489
=crtverify.value)
1906
2490
# New buffer for the fingerprint
1907
2491
buf = ctypes.create_string_buffer(20)
1908
2492
buf_len = ctypes.c_size_t()
1909
2493
# 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))
2494
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2495
ctypes.byref(buf_len))
1912
2496
# Deinit the certificate
1913
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2497
gnutls.openpgp_crt_deinit(crt)
1914
2498
# Convert the buffer to a Python bytestring
1915
2499
fpr = ctypes.string_at(buf, buf_len.value)
1916
2500
# Convert the bytestring to hexadecimal notation
1918
2502
return hex_fpr
1919
2503
1920
2504
1921
class MultiprocessingMixIn(object):
2505
class MultiprocessingMixIn:
1922
2506
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
1923
2507
1924
2508
def sub_process_main(self, request, address):
1925
2509
try:
1926
2510
self.finish_request(request, address)
1927
2511
except Exception:
1928
2512
self.handle_error(request, address)
1929
2513
self.close_request(request)
1930
2514
1931
2515
def process_request(self, request, address):
1932
2516
"""Start a new process to process the request."""
1933
proc = multiprocessing.Process(target = self.sub_process_main,
1934
args = (request, address))
2517
proc = multiprocessing.Process(target=self.sub_process_main,
2518
args=(request, address))
1935
2519
proc.start()
1936
2520
return proc
1937
2521
1938
2522
1939
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2523
class MultiprocessingMixInWithPipe(MultiprocessingMixIn):
1940
2524
""" adds a pipe to the MixIn """
1941
2525
1942
2526
def process_request(self, request, client_address):
1943
2527
"""Overrides and wraps the original process_request().
1944
2528
1945
2529
This function creates a new pipe in self.pipe
1946
2530
"""
1947
2531
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1948
2532
1949
2533
proc = MultiprocessingMixIn.process_request(self, request,
1950
2534
client_address)
1951
2535
self.child_pipe.close()
1952
2536
self.add_pipe(parent_pipe, proc)
1953
2537
1954
2538
def add_pipe(self, parent_pipe, proc):
1955
2539
"""Dummy function; override as necessary"""
1956
2540
raise NotImplementedError()
1957
2541
1958
2542
1959
2543
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1960
socketserver.TCPServer, object):
2544
socketserver.TCPServer):
1961
2545
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1962
2546
1963
2547
Attributes:
1964
2548
enabled: Boolean; whether this server is activated yet
1965
2549
interface: None or a network interface name (string)
1966
2550
use_ipv6: Boolean; to use IPv6 or not
1967
2551
"""
1968
2552
1969
2553
def __init__(self, server_address, RequestHandlerClass,
1970
2554
interface=None,
1971
2555
use_ipv6=True,
1981
2565
self.socketfd = socketfd
1982
2566
# Save the original socket.socket() function
1983
2567
self.socket_socket = socket.socket
2568
1984
2569
# To implement --socket, we monkey patch socket.socket.
1985
#
2570
#
1986
2571
# (When socketserver.TCPServer is a new-style class, we
1987
2572
# could make self.socket into a property instead of monkey
1988
2573
# patching socket.socket.)
1989
#
2574
#
1990
2575
# Create a one-time-only replacement for socket.socket()
1991
2576
@functools.wraps(socket.socket)
1992
2577
def socket_wrapper(*args, **kwargs):
2004
2589
# socket_wrapper(), if socketfd was set.
2005
2590
socketserver.TCPServer.__init__(self, server_address,
2006
2591
RequestHandlerClass)
2007
2592
2008
2593
def server_bind(self):
2009
2594
"""This overrides the normal server_bind() function
2010
2595
to bind to an interface if one was specified, and also NOT to
2011
2596
bind to an address or port if they were not specified."""
2597
global SO_BINDTODEVICE
2012
2598
if self.interface is not None:
2013
2599
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
2600
# Fall back to a hard-coded value which seems to be
2601
# common enough.
2602
logger.warning("SO_BINDTODEVICE not found, trying 25")
2603
SO_BINDTODEVICE = 25
2604
try:
2605
self.socket.setsockopt(
2606
socket.SOL_SOCKET, SO_BINDTODEVICE,
2607
(self.interface + "\0").encode("utf-8"))
2608
except socket.error as error:
2609
if error.errno == errno.EPERM:
2610
logger.error("No permission to bind to"
2611
" interface %s", self.interface)
2612
elif error.errno == errno.ENOPROTOOPT:
2613
logger.error("SO_BINDTODEVICE not available;"
2614
" cannot bind to interface %s",
2615
self.interface)
2616
elif error.errno == errno.ENODEV:
2617
logger.error("Interface %s does not exist,"
2618
" cannot bind", self.interface)
2619
else:
2620
raise
2035
2621
# Only bind(2) the socket if we really need to.
2036
2622
if self.server_address[0] or self.server_address[1]:
2623
if self.server_address[1]:
2624
self.allow_reuse_address = True
2037
2625
if not self.server_address[0]:
2038
2626
if self.address_family == socket.AF_INET6:
2039
any_address = "::" # in6addr_any
2627
any_address = "::" # in6addr_any
2040
2628
else:
2041
any_address = "0.0.0.0" # INADDR_ANY
2629
any_address = "0.0.0.0" # INADDR_ANY
2042
2630
self.server_address = (any_address,
2043
2631
self.server_address[1])
2044
2632
elif not self.server_address[1]:
2054
2642
2055
2643
class MandosServer(IPv6_TCPServer):
2056
2644
"""Mandos server.
2057
2645
2058
2646
Attributes:
2059
2647
clients: set of Client objects
2060
2648
gnutls_priority GnuTLS priority string
2061
2649
use_dbus: Boolean; to emit D-Bus signals or not
2062
2063
Assumes a gobject.MainLoop event loop.
2650
2651
Assumes a GLib.MainLoop event loop.
2064
2652
"""
2065
2653
2066
2654
def __init__(self, server_address, RequestHandlerClass,
2067
2655
interface=None,
2068
2656
use_ipv6=True,
2078
2666
self.gnutls_priority = gnutls_priority
2079
2667
IPv6_TCPServer.__init__(self, server_address,
2080
2668
RequestHandlerClass,
2081
interface = interface,
2082
use_ipv6 = use_ipv6,
2083
socketfd = socketfd)
2084
2669
interface=interface,
2670
use_ipv6=use_ipv6,
2671
socketfd=socketfd)
2672
2085
2673
def server_activate(self):
2086
2674
if self.enabled:
2087
2675
return socketserver.TCPServer.server_activate(self)
2088
2676
2089
2677
def enable(self):
2090
2678
self.enabled = True
2091
2679
2092
2680
def add_pipe(self, parent_pipe, proc):
2093
2681
# 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,
2682
GLib.io_add_watch(
2683
parent_pipe.fileno(), GLib.PRIORITY_DEFAULT,
2684
GLib.IO_IN | GLib.IO_HUP,
2097
2685
functools.partial(self.handle_ipc,
2098
parent_pipe = parent_pipe,
2099
proc = proc))
2100
2686
parent_pipe=parent_pipe,
2687
proc=proc))
2688
2101
2689
def handle_ipc(self, source, condition,
2102
2690
parent_pipe=None,
2103
proc = None,
2691
proc=None,
2104
2692
client_object=None):
2105
2693
# error, or the other end of multiprocessing.Pipe has closed
2106
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2694
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2107
2695
# Wait for other process to exit
2108
2696
proc.join()
2109
2697
return False
2110
2698
2111
2699
# Read a request from the child
2112
2700
request = parent_pipe.recv()
2113
2701
command = request[0]
2114
2702
2115
2703
if command == 'init':
2116
fpr = request[1]
2117
address = request[2]
2118
2119
for c in self.clients.itervalues():
2120
if c.fingerprint == fpr:
2704
key_id = request[1].decode("ascii")
2705
fpr = request[2].decode("ascii")
2706
address = request[3]
2707
2708
for c in self.clients.values():
2709
if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2710
continue
2711
if key_id and c.key_id == key_id:
2712
client = c
2713
break
2714
if fpr and c.fingerprint == fpr:
2121
2715
client = c
2122
2716
break
2123
2717
else:
2124
logger.info("Client not found for fingerprint: %s, ad"
2125
"dress: %s", fpr, address)
2718
logger.info("Client not found for key ID: %s, address"
2719
": %s", key_id or fpr, address)
2126
2720
if self.use_dbus:
2127
2721
# Emit D-Bus signal
2128
mandos_dbus_service.ClientNotFound(fpr,
2722
mandos_dbus_service.ClientNotFound(key_id or fpr,
2129
2723
address[0])
2130
2724
parent_pipe.send(False)
2131
2725
return False
2132
2133
gobject.io_add_watch(
2134
parent_pipe.fileno(),
2135
gobject.IO_IN | gobject.IO_HUP,
2726
2727
GLib.io_add_watch(
2728
parent_pipe.fileno(), GLib.PRIORITY_DEFAULT,
2729
GLib.IO_IN | GLib.IO_HUP,
2136
2730
functools.partial(self.handle_ipc,
2137
parent_pipe = parent_pipe,
2138
proc = proc,
2139
client_object = client))
2731
parent_pipe=parent_pipe,
2732
proc=proc,
2733
client_object=client))
2140
2734
parent_pipe.send(True)
2141
2735
# remove the old hook in favor of the new above hook on
2142
2736
# same fileno
2145
2739
funcname = request[1]
2146
2740
args = request[2]
2147
2741
kwargs = request[3]
2148
2742
2149
2743
parent_pipe.send(('data', getattr(client_object,
2150
2744
funcname)(*args,
2151
2745
**kwargs)))
2152
2746
2153
2747
if command == 'getattr':
2154
2748
attrname = request[1]
2155
2749
if isinstance(client_object.__getattribute__(attrname),
2158
2752
else:
2159
2753
parent_pipe.send((
2160
2754
'data', client_object.__getattribute__(attrname)))
2161
2755
2162
2756
if command == 'setattr':
2163
2757
attrname = request[1]
2164
2758
value = request[2]
2165
2759
setattr(client_object, attrname, value)
2166
2760
2167
2761
return True
2168
2762
2169
2763
2170
2764
def rfc3339_duration_to_delta(duration):
2171
2765
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2172
2766
2173
2767
>>> rfc3339_duration_to_delta("P7D")
2174
2768
datetime.timedelta(7)
2175
2769
>>> rfc3339_duration_to_delta("PT60S")
2185
2779
>>> rfc3339_duration_to_delta("P1DT3M20S")
2186
2780
datetime.timedelta(1, 200)
2187
2781
"""
2188
2782
2189
2783
# Parsing an RFC 3339 duration with regular expressions is not
2190
2784
# possible - there would have to be multiple places for the same
2191
2785
# values, like seconds. The current code, while more esoteric, is
2192
2786
# cleaner without depending on a parsing library. If Python had a
2193
2787
# built-in library for parsing we would use it, but we'd like to
2194
2788
# avoid excessive use of external libraries.
2195
2789
2196
2790
# New type for defining tokens, syntax, and semantics all-in-one
2197
2791
Token = collections.namedtuple("Token", (
2198
2792
"regexp", # To match token; if "value" is not None, must have
2231
2825
frozenset((token_year, token_month,
2232
2826
token_day, token_time,
2233
2827
token_week)))
2234
# Define starting values
2235
value = datetime.timedelta() # Value so far
2828
# Define starting values:
2829
# Value so far
2830
value = datetime.timedelta()
2236
2831
found_token = None
2237
followers = frozenset((token_duration, )) # Following valid tokens
2238
s = duration # String left to parse
2832
# Following valid tokens
2833
followers = frozenset((token_duration, ))
2834
# String left to parse
2835
s = duration
2239
2836
# Loop until end token is found
2240
2837
while found_token is not token_end:
2241
2838
# Search for any currently valid tokens
2265
2862
2266
2863
def string_to_delta(interval):
2267
2864
"""Parse a string and return a datetime.timedelta
2268
2865
2269
2866
>>> string_to_delta('7d')
2270
2867
datetime.timedelta(7)
2271
2868
>>> string_to_delta('60s')
2279
2876
>>> string_to_delta('5m 30s')
2280
2877
datetime.timedelta(0, 330)
2281
2878
"""
2282
2879
2283
2880
try:
2284
2881
return rfc3339_duration_to_delta(interval)
2285
2882
except ValueError:
2286
2883
pass
2287
2884
2288
2885
timevalue = datetime.timedelta(0)
2289
2886
for s in interval.split():
2290
2887
try:
2308
2905
return timevalue
2309
2906
2310
2907
2311
def daemon(nochdir = False, noclose = False):
2908
def daemon(nochdir=False, noclose=False):
2312
2909
"""See daemon(3). Standard BSD Unix function.
2313
2910
2314
2911
This should really exist as os.daemon, but it doesn't (yet)."""
2315
2912
if os.fork():
2316
2913
sys.exit()
2334
2931
2335
2932
2336
2933
def main():
2337
2934
2338
2935
##################################################################
2339
2936
# Parsing of options, both command line and config file
2340
2937
2341
2938
parser = argparse.ArgumentParser()
2342
2939
parser.add_argument("-v", "--version", action="version",
2343
version = "%(prog)s {}".format(version),
2940
version="%(prog)s {}".format(version),
2344
2941
help="show version number and exit")
2345
2942
parser.add_argument("-i", "--interface", metavar="IF",
2346
2943
help="Bind to interface IF")
2382
2979
parser.add_argument("--no-zeroconf", action="store_false",
2383
2980
dest="zeroconf", help="Do not use Zeroconf",
2384
2981
default=None)
2385
2982
2386
2983
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
2984
2393
2985
# 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
2986
if gnutls.has_rawpk:
2987
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
2988
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
2989
else:
2990
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2991
":+SIGN-DSA-SHA256")
2992
server_defaults = {"interface": "",
2993
"address": "",
2994
"port": "",
2995
"debug": "False",
2996
"priority": priority,
2997
"servicename": "Mandos",
2998
"use_dbus": "True",
2999
"use_ipv6": "True",
3000
"debuglevel": "",
3001
"restore": "True",
3002
"socket": "",
3003
"statedir": "/var/lib/mandos",
3004
"foreground": "False",
3005
"zeroconf": "True",
3006
}
3007
del priority
3008
2412
3009
# Parse config file for server-global settings
2413
server_config = configparser.SafeConfigParser(server_defaults)
3010
server_config = configparser.ConfigParser(server_defaults)
2414
3011
del server_defaults
2415
3012
server_config.read(os.path.join(options.configdir, "mandos.conf"))
2416
# Convert the SafeConfigParser object to a dict
3013
# Convert the ConfigParser object to a dict
2417
3014
server_settings = server_config.defaults()
2418
3015
# Use the appropriate methods on the non-string config options
2419
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
3016
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3017
"foreground", "zeroconf"):
2420
3018
server_settings[option] = server_config.getboolean("DEFAULT",
2421
3019
option)
2422
3020
if server_settings["port"]:
2432
3030
server_settings["socket"] = os.dup(server_settings
2433
3031
["socket"])
2434
3032
del server_config
2435
3033
2436
3034
# Override the settings from the config file with command line
2437
3035
# options, if set.
2438
3036
for option in ("interface", "address", "port", "debug",
2456
3054
if server_settings["debug"]:
2457
3055
server_settings["foreground"] = True
2458
3056
# Now we have our good server settings in "server_settings"
2459
3057
2460
3058
##################################################################
2461
3059
2462
3060
if (not server_settings["zeroconf"]
2463
3061
and not (server_settings["port"]
2464
3062
or server_settings["socket"] != "")):
2465
3063
parser.error("Needs port or socket to work without Zeroconf")
2466
3064
2467
3065
# For convenience
2468
3066
debug = server_settings["debug"]
2469
3067
debuglevel = server_settings["debuglevel"]
2473
3071
stored_state_file)
2474
3072
foreground = server_settings["foreground"]
2475
3073
zeroconf = server_settings["zeroconf"]
2476
3074
2477
3075
if debug:
2478
3076
initlogger(debug, logging.DEBUG)
2479
3077
else:
2482
3080
else:
2483
3081
level = getattr(logging, debuglevel.upper())
2484
3082
initlogger(debug, level)
2485
3083
2486
3084
if server_settings["servicename"] != "Mandos":
2487
3085
syslogger.setFormatter(
2488
3086
logging.Formatter('Mandos ({}) [%(process)d]:'
2489
3087
' %(levelname)s: %(message)s'.format(
2490
3088
server_settings["servicename"])))
2491
3089
2492
3090
# Parse config file with clients
2493
client_config = configparser.SafeConfigParser(Client
2494
.client_defaults)
3091
client_config = configparser.ConfigParser(Client.client_defaults)
2495
3092
client_config.read(os.path.join(server_settings["configdir"],
2496
3093
"clients.conf"))
2497
3094
2498
3095
global mandos_dbus_service
2499
3096
mandos_dbus_service = None
2500
3097
2501
3098
socketfd = None
2502
3099
if server_settings["socket"] != "":
2503
3100
socketfd = server_settings["socket"]
2519
3116
except IOError as e:
2520
3117
logger.error("Could not open file %r", pidfilename,
2521
3118
exc_info=e)
2522
2523
for name in ("_mandos", "mandos", "nobody"):
3119
3120
for name, group in (("_mandos", "_mandos"),
3121
("mandos", "mandos"),
3122
("nobody", "nogroup")):
2524
3123
try:
2525
3124
uid = pwd.getpwnam(name).pw_uid
2526
gid = pwd.getpwnam(name).pw_gid
3125
gid = pwd.getpwnam(group).pw_gid
2527
3126
break
2528
3127
except KeyError:
2529
3128
continue
2533
3132
try:
2534
3133
os.setgid(gid)
2535
3134
os.setuid(uid)
3135
if debug:
3136
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3137
gid))
2536
3138
except OSError as error:
3139
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3140
.format(uid, gid, os.strerror(error.errno)))
2537
3141
if error.errno != errno.EPERM:
2538
3142
raise
2539
3143
2540
3144
if debug:
2541
3145
# Enable all possible GnuTLS debugging
2542
3146
2543
3147
# "Use a log level over 10 to enable all debugging options."
2544
3148
# - GnuTLS manual
2545
gnutls.library.functions.gnutls_global_set_log_level(11)
2546
2547
@gnutls.library.types.gnutls_log_func
3149
gnutls.global_set_log_level(11)
3150
3151
@gnutls.log_func
2548
3152
def debug_gnutls(level, string):
2549
3153
logger.debug("GnuTLS: %s", string[:-1])
2550
2551
gnutls.library.functions.gnutls_global_set_log_function(
2552
debug_gnutls)
2553
3154
3155
gnutls.global_set_log_function(debug_gnutls)
3156
2554
3157
# Redirect stdin so all checkers get /dev/null
2555
3158
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2556
3159
os.dup2(null, sys.stdin.fileno())
2557
3160
if null > 2:
2558
3161
os.close(null)
2559
3162
2560
3163
# Need to fork before connecting to D-Bus
2561
3164
if not foreground:
2562
3165
# Close all input and output, do double fork, etc.
2563
3166
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
3167
3168
if gi.version_info < (3, 10, 2):
3169
# multiprocessing will use threads, so before we use GLib we
3170
# need to inform GLib that threads will be used.
3171
GLib.threads_init()
3172
2569
3173
global main_loop
2570
3174
# From the Avahi example code
2571
3175
DBusGMainLoop(set_as_default=True)
2572
main_loop = gobject.MainLoop()
3176
main_loop = GLib.MainLoop()
2573
3177
bus = dbus.SystemBus()
2574
3178
# End of Avahi example code
2575
3179
if use_dbus:
2588
3192
if zeroconf:
2589
3193
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2590
3194
service = AvahiServiceToSyslog(
2591
name = server_settings["servicename"],
2592
servicetype = "_mandos._tcp",
2593
protocol = protocol,
2594
bus = bus)
3195
name=server_settings["servicename"],
3196
servicetype="_mandos._tcp",
3197
protocol=protocol,
3198
bus=bus)
2595
3199
if server_settings["interface"]:
2596
3200
service.interface = if_nametoindex(
2597
3201
server_settings["interface"].encode("utf-8"))
2598
3202
2599
3203
global multiprocessing_manager
2600
3204
multiprocessing_manager = multiprocessing.Manager()
2601
3205
2602
3206
client_class = Client
2603
3207
if use_dbus:
2604
client_class = functools.partial(ClientDBus, bus = bus)
2605
3208
client_class = functools.partial(ClientDBus, bus=bus)
3209
2606
3210
client_settings = Client.config_parser(client_config)
2607
3211
old_client_settings = {}
2608
3212
clients_data = {}
2609
3213
2610
3214
# This is used to redirect stdout and stderr for checker processes
2611
3215
global wnull
2612
wnull = open(os.devnull, "w") # A writable /dev/null
3216
wnull = open(os.devnull, "w") # A writable /dev/null
2613
3217
# Only used if server is running in foreground but not in debug
2614
3218
# mode
2615
3219
if debug or not foreground:
2616
3220
wnull.close()
2617
3221
2618
3222
# Get client data and settings from last running state.
2619
3223
if server_settings["restore"]:
2620
3224
try:
2621
3225
with open(stored_state_path, "rb") as stored_state:
2622
clients_data, old_client_settings = pickle.load(
2623
stored_state)
3226
if sys.version_info.major == 2:
3227
clients_data, old_client_settings = pickle.load(
3228
stored_state)
3229
else:
3230
bytes_clients_data, bytes_old_client_settings = (
3231
pickle.load(stored_state, encoding="bytes"))
3232
# Fix bytes to strings
3233
# clients_data
3234
# .keys()
3235
clients_data = {(key.decode("utf-8")
3236
if isinstance(key, bytes)
3237
else key): value
3238
for key, value in
3239
bytes_clients_data.items()}
3240
del bytes_clients_data
3241
for key in clients_data:
3242
value = {(k.decode("utf-8")
3243
if isinstance(k, bytes) else k): v
3244
for k, v in
3245
clients_data[key].items()}
3246
clients_data[key] = value
3247
# .client_structure
3248
value["client_structure"] = [
3249
(s.decode("utf-8")
3250
if isinstance(s, bytes)
3251
else s) for s in
3252
value["client_structure"]]
3253
# .name & .host
3254
for k in ("name", "host"):
3255
if isinstance(value[k], bytes):
3256
value[k] = value[k].decode("utf-8")
3257
if "key_id" not in value:
3258
value["key_id"] = ""
3259
elif "fingerprint" not in value:
3260
value["fingerprint"] = ""
3261
# old_client_settings
3262
# .keys()
3263
old_client_settings = {
3264
(key.decode("utf-8")
3265
if isinstance(key, bytes)
3266
else key): value
3267
for key, value in
3268
bytes_old_client_settings.items()}
3269
del bytes_old_client_settings
3270
# .host
3271
for value in old_client_settings.values():
3272
if isinstance(value["host"], bytes):
3273
value["host"] = (value["host"]
3274
.decode("utf-8"))
2624
3275
os.remove(stored_state_path)
2625
3276
except IOError as e:
2626
3277
if e.errno == errno.ENOENT:
2634
3285
logger.warning("Could not load persistent state: "
2635
3286
"EOFError:",
2636
3287
exc_info=e)
2637
3288
2638
3289
with PGPEngine() as pgp:
2639
3290
for client_name, client in clients_data.items():
2640
3291
# Skip removed clients
2641
3292
if client_name not in client_settings:
2642
3293
continue
2643
3294
2644
3295
# Decide which value to use after restoring saved state.
2645
3296
# We have three different values: Old config file,
2646
3297
# new config file, and saved state.
2657
3308
client[name] = value
2658
3309
except KeyError:
2659
3310
pass
2660
3311
2661
3312
# Clients who has passed its expire date can still be
2662
3313
# enabled if its last checker was successful. A Client
2663
3314
# whose checker succeeded before we stored its state is
2696
3347
client_name))
2697
3348
client["secret"] = (client_settings[client_name]
2698
3349
["secret"])
2699
3350
2700
3351
# Add/remove clients based on new changes made to config
2701
3352
for client_name in (set(old_client_settings)
2702
3353
- set(client_settings)):
2704
3355
for client_name in (set(client_settings)
2705
3356
- set(old_client_settings)):
2706
3357
clients_data[client_name] = client_settings[client_name]
2707
3358
2708
3359
# Create all client objects
2709
3360
for client_name, client in clients_data.items():
2710
3361
tcp_server.clients[client_name] = client_class(
2711
name = client_name,
2712
settings = client,
2713
server_settings = server_settings)
2714
3362
name=client_name,
3363
settings=client,
3364
server_settings=server_settings)
3365
2715
3366
if not tcp_server.clients:
2716
3367
logger.warning("No clients defined")
2717
3368
2718
3369
if not foreground:
2719
3370
if pidfile is not None:
2720
3371
pid = os.getpid()
2726
3377
pidfilename, pid)
2727
3378
del pidfile
2728
3379
del pidfilename
2729
2730
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2731
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2732
3380
3381
for termsig in (signal.SIGHUP, signal.SIGTERM):
3382
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3383
lambda: main_loop.quit() and False)
3384
2733
3385
if use_dbus:
2734
3386
2735
3387
@alternate_dbus_interfaces(
2736
{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
2737
class MandosDBusService(DBusObjectWithProperties):
3388
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3389
class MandosDBusService(DBusObjectWithObjectManager):
2738
3390
"""A D-Bus proxy object"""
2739
3391
2740
3392
def __init__(self):
2741
3393
dbus.service.Object.__init__(self, bus, "/")
2742
3394
2743
3395
_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
3396
2751
3397
@dbus.service.signal(_interface, signature="o")
2752
3398
def ClientAdded(self, objpath):
2753
3399
"D-Bus signal"
2754
3400
pass
2755
3401
2756
3402
@dbus.service.signal(_interface, signature="ss")
2757
def ClientNotFound(self, fingerprint, address):
3403
def ClientNotFound(self, key_id, address):
2758
3404
"D-Bus signal"
2759
3405
pass
2760
3406
3407
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3408
"true"})
2761
3409
@dbus.service.signal(_interface, signature="os")
2762
3410
def ClientRemoved(self, objpath, name):
2763
3411
"D-Bus signal"
2764
3412
pass
2765
3413
3414
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3415
"true"})
2766
3416
@dbus.service.method(_interface, out_signature="ao")
2767
3417
def GetAllClients(self):
2768
3418
"D-Bus method"
2769
3419
return dbus.Array(c.dbus_object_path for c in
2770
tcp_server.clients.itervalues())
2771
3420
tcp_server.clients.values())
3421
3422
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3423
"true"})
2772
3424
@dbus.service.method(_interface,
2773
3425
out_signature="a{oa{sv}}")
2774
3426
def GetAllClientsWithProperties(self):
2775
3427
"D-Bus method"
2776
3428
return dbus.Dictionary(
2777
{ c.dbus_object_path: c.GetAll("")
2778
for c in tcp_server.clients.itervalues() },
3429
{c.dbus_object_path: c.GetAll(
3430
"se.recompile.Mandos.Client")
3431
for c in tcp_server.clients.values()},
2779
3432
signature="oa{sv}")
2780
3433
2781
3434
@dbus.service.method(_interface, in_signature="o")
2782
3435
def RemoveClient(self, object_path):
2783
3436
"D-Bus method"
2784
for c in tcp_server.clients.itervalues():
3437
for c in tcp_server.clients.values():
2785
3438
if c.dbus_object_path == object_path:
2786
3439
del tcp_server.clients[c.name]
2787
3440
c.remove_from_connection()
2788
# Don't signal anything except ClientRemoved
3441
# Don't signal the disabling
2789
3442
c.disable(quiet=True)
2790
# Emit D-Bus signal
2791
self.ClientRemoved(object_path, c.name)
3443
# Emit D-Bus signal for removal
3444
self.client_removed_signal(c)
2792
3445
return
2793
3446
raise KeyError(object_path)
2794
3447
2795
3448
del _interface
2796
3449
3450
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3451
out_signature="a{oa{sa{sv}}}")
3452
def GetManagedObjects(self):
3453
"""D-Bus method"""
3454
return dbus.Dictionary(
3455
{client.dbus_object_path:
3456
dbus.Dictionary(
3457
{interface: client.GetAll(interface)
3458
for interface in
3459
client._get_all_interface_names()})
3460
for client in tcp_server.clients.values()})
3461
3462
def client_added_signal(self, client):
3463
"""Send the new standard signal and the old signal"""
3464
if use_dbus:
3465
# New standard signal
3466
self.InterfacesAdded(
3467
client.dbus_object_path,
3468
dbus.Dictionary(
3469
{interface: client.GetAll(interface)
3470
for interface in
3471
client._get_all_interface_names()}))
3472
# Old signal
3473
self.ClientAdded(client.dbus_object_path)
3474
3475
def client_removed_signal(self, client):
3476
"""Send the new standard signal and the old signal"""
3477
if use_dbus:
3478
# New standard signal
3479
self.InterfacesRemoved(
3480
client.dbus_object_path,
3481
client._get_all_interface_names())
3482
# Old signal
3483
self.ClientRemoved(client.dbus_object_path,
3484
client.name)
3485
2797
3486
mandos_dbus_service = MandosDBusService()
2798
3487
3488
# Save modules to variables to exempt the modules from being
3489
# unloaded before the function registered with atexit() is run.
3490
mp = multiprocessing
3491
wn = wnull
3492
2799
3493
def cleanup():
2800
3494
"Cleanup function; run on exit"
2801
3495
if zeroconf:
2802
3496
service.cleanup()
2803
2804
multiprocessing.active_children()
2805
wnull.close()
3497
3498
mp.active_children()
3499
wn.close()
2806
3500
if not (tcp_server.clients or client_settings):
2807
3501
return
2808
3502
2809
3503
# Store client before exiting. Secrets are encrypted with key
2810
3504
# based on what config file has. If config file is
2811
3505
# removed/edited, old secret will thus be unrecovable.
2812
3506
clients = {}
2813
3507
with PGPEngine() as pgp:
2814
for client in tcp_server.clients.itervalues():
3508
for client in tcp_server.clients.values():
2815
3509
key = client_settings[client.name]["secret"]
2816
3510
client.encrypted_secret = pgp.encrypt(client.secret,
2817
3511
key)
2818
3512
client_dict = {}
2819
3513
2820
3514
# A list of attributes that can not be pickled
2821
3515
# + secret.
2822
exclude = { "bus", "changedstate", "secret",
2823
"checker", "server_settings" }
3516
exclude = {"bus", "changedstate", "secret",
3517
"checker", "server_settings"}
2824
3518
for name, typ in inspect.getmembers(dbus.service
2825
3519
.Object):
2826
3520
exclude.add(name)
2827
3521
2828
3522
client_dict["encrypted_secret"] = (client
2829
3523
.encrypted_secret)
2830
3524
for attr in client.client_structure:
2831
3525
if attr not in exclude:
2832
3526
client_dict[attr] = getattr(client, attr)
2833
3527
2834
3528
clients[client.name] = client_dict
2835
3529
del client_settings[client.name]["secret"]
2836
3530
2837
3531
try:
2838
3532
with tempfile.NamedTemporaryFile(
2839
3533
mode='wb',
2841
3535
prefix='clients-',
2842
3536
dir=os.path.dirname(stored_state_path),
2843
3537
delete=False) as stored_state:
2844
pickle.dump((clients, client_settings), stored_state)
3538
pickle.dump((clients, client_settings), stored_state,
3539
protocol=2)
2845
3540
tempname = stored_state.name
2846
3541
os.rename(tempname, stored_state_path)
2847
3542
except (IOError, OSError) as e:
2857
3552
logger.warning("Could not save persistent state:",
2858
3553
exc_info=e)
2859
3554
raise
2860
3555
2861
3556
# Delete all clients, and settings from config
2862
3557
while tcp_server.clients:
2863
3558
name, client = tcp_server.clients.popitem()
2864
3559
if use_dbus:
2865
3560
client.remove_from_connection()
2866
# Don't signal anything except ClientRemoved
3561
# Don't signal the disabling
2867
3562
client.disable(quiet=True)
3563
# Emit D-Bus signal for removal
2868
3564
if use_dbus:
2869
# Emit D-Bus signal
2870
mandos_dbus_service.ClientRemoved(
2871
client.dbus_object_path, client.name)
3565
mandos_dbus_service.client_removed_signal(client)
2872
3566
client_settings.clear()
2873
3567
2874
3568
atexit.register(cleanup)
2875
2876
for client in tcp_server.clients.itervalues():
3569
3570
for client in tcp_server.clients.values():
2877
3571
if use_dbus:
2878
# Emit D-Bus signal
2879
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3572
# Emit D-Bus signal for adding
3573
mandos_dbus_service.client_added_signal(client)
2880
3574
# Need to initiate checking of clients
2881
3575
if client.enabled:
2882
3576
client.init_checker()
2883
3577
2884
3578
tcp_server.enable()
2885
3579
tcp_server.server_activate()
2886
3580
2887
3581
# Find out what port we got
2888
3582
if zeroconf:
2889
3583
service.port = tcp_server.socket.getsockname()[1]
2894
3588
else: # IPv4
2895
3589
logger.info("Now listening on address %r, port %d",
2896
3590
*tcp_server.socket.getsockname())
2897
2898
#service.interface = tcp_server.socket.getsockname()[3]
2899
3591
3592
# service.interface = tcp_server.socket.getsockname()[3]
3593
2900
3594
try:
2901
3595
if zeroconf:
2902
3596
# From the Avahi example code
2907
3601
cleanup()
2908
3602
sys.exit(1)
2909
3603
# 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
3604
3605
GLib.io_add_watch(tcp_server.fileno(), GLib.PRIORITY_DEFAULT,
3606
GLib.IO_IN,
3607
lambda *args, **kwargs:
3608
(tcp_server.handle_request
3609
(*args[2:], **kwargs) or True))
3610
2916
3611
logger.debug("Starting main loop")
2917
3612
main_loop.run()
2918
3613
except AvahiError as error:
2927
3622
# Must run before the D-Bus bus name gets deregistered
2928
3623
cleanup()
2929
3624
3625
3626
def should_only_run_tests():
3627
parser = argparse.ArgumentParser(add_help=False)
3628
parser.add_argument("--check", action='store_true')
3629
args, unknown_args = parser.parse_known_args()
3630
run_tests = args.check
3631
if run_tests:
3632
# Remove --check argument from sys.argv
3633
sys.argv[1:] = unknown_args
3634
return run_tests
3635
3636
# Add all tests from doctest strings
3637
def load_tests(loader, tests, none):
3638
import doctest
3639
tests.addTests(doctest.DocTestSuite())
3640
return tests
2930
3641
2931
3642
if __name__ == '__main__':
2932
main()
3643
try:
3644
if should_only_run_tests():
3645
# Call using ./mandos --check [--verbose]
3646
unittest.main()
3647
else:
3648
main()
3649
finally:
3650
logging.shutdown()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0