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- Committer: Teddy Hogeborn
- Date: 2019-10-20 01:48:38 UTC
- Revision ID: teddy@recompile.se-20191020014838-w0pin3z8oe6he6gn
Update comment text
* dracut-module/password-agent.c (task_func): Fix comment to not still
call this type
"func_type".
* dracut-module/password-agent.c (task_func): Fix comment to not still
call this type
"func_type".
- files added:
- bugs.xml
- debian/tests
- dracut-module
- files removed:
- initramfs-tools-hook-conf
- files modified:
- .bzrignore
added
removed
mandos
1
#!/usr/bin/python2.7
2
# -*- mode: python; coding: utf-8 -*-
3
#
1
#!/usr/bin/python3 -b
2
# -*- mode: python; after-save-hook: (lambda () (let ((command (if (fboundp 'file-local-name) (file-local-name (buffer-file-name)) (or (file-remote-p (buffer-file-name) 'localname) (buffer-file-name))))) (if (= (progn (if (get-buffer "*Test*") (kill-buffer "*Test*")) (process-file-shell-command (format "%s --check" (shell-quote-argument command)) nil "*Test*")) 0) (let ((w (get-buffer-window "*Test*"))) (if w (delete-window w))) (progn (with-current-buffer "*Test*" (compilation-mode)) (display-buffer "*Test*" '(display-buffer-in-side-window)))))); coding: utf-8 -*-
3
#
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 = "1.8.9"
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 == b"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 == b"gpg" or self.gpg.endswith(b"/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
if self.checker is not None:
1057
self.checker.join()
1058
self.checker_callback_tag = None
1059
self.checker = None
1060
669
1061
if returncode >= 0:
670
1062
self.last_checker_status = returncode
671
1063
self.last_checker_signal = None
681
1073
logger.warning("Checker for %(name)s crashed?",
682
1074
vars(self))
683
1075
return False
684
1076
685
1077
def checked_ok(self):
686
1078
"""Assert that the client has been seen, alive and well."""
687
1079
self.last_checked_ok = datetime.datetime.utcnow()
688
1080
self.last_checker_status = 0
689
1081
self.last_checker_signal = None
690
1082
self.bump_timeout()
691
1083
692
1084
def bump_timeout(self, timeout=None):
693
1085
"""Bump up the timeout for this client."""
694
1086
if timeout is None:
695
1087
timeout = self.timeout
696
1088
if self.disable_initiator_tag is not None:
697
gobject.source_remove(self.disable_initiator_tag)
1089
GLib.source_remove(self.disable_initiator_tag)
698
1090
self.disable_initiator_tag = None
699
1091
if getattr(self, "enabled", False):
700
self.disable_initiator_tag = gobject.timeout_add(
1092
self.disable_initiator_tag = GLib.timeout_add(
701
1093
int(timeout.total_seconds() * 1000), self.disable)
702
1094
self.expires = datetime.datetime.utcnow() + timeout
703
1095
704
1096
def need_approval(self):
705
1097
self.last_approval_request = datetime.datetime.utcnow()
706
1098
707
1099
def start_checker(self):
708
1100
"""Start a new checker subprocess if one is not running.
709
1101
710
1102
If a checker already exists, leave it running and do
711
1103
nothing."""
712
1104
# The reason for not killing a running checker is that if we
717
1109
# checkers alone, the checker would have to take more time
718
1110
# than 'timeout' for the client to be disabled, which is as it
719
1111
# should be.
720
1112
721
1113
if self.checker is not None and not self.checker.is_alive():
722
1114
logger.warning("Checker was not alive; joining")
723
1115
self.checker.join()
727
1119
# Escape attributes for the shell
728
1120
escaped_attrs = {
729
1121
attr: re.escape(str(getattr(self, attr)))
730
for attr in self.runtime_expansions }
1122
for attr in self.runtime_expansions}
731
1123
try:
732
1124
command = self.checker_command % escaped_attrs
733
1125
except TypeError as error:
745
1137
# The exception is when not debugging but nevertheless
746
1138
# running in the foreground; use the previously
747
1139
# created wnull.
748
popen_args = { "close_fds": True,
749
"shell": True,
750
"cwd": "/" }
1140
popen_args = {"close_fds": True,
1141
"shell": True,
1142
"cwd": "/"}
751
1143
if (not self.server_settings["debug"]
752
1144
and self.server_settings["foreground"]):
753
1145
popen_args.update({"stdout": wnull,
754
"stderr": wnull })
755
pipe = multiprocessing.Pipe(duplex = False)
1146
"stderr": wnull})
1147
pipe = multiprocessing.Pipe(duplex=False)
756
1148
self.checker = multiprocessing.Process(
757
target = call_pipe,
758
args = (pipe[1], subprocess.call, command),
759
kwargs = popen_args)
1149
target=call_pipe,
1150
args=(pipe[1], subprocess.call, command),
1151
kwargs=popen_args)
760
1152
self.checker.start()
761
self.checker_callback_tag = gobject.io_add_watch(
762
pipe[0].fileno(), gobject.IO_IN,
1153
self.checker_callback_tag = GLib.io_add_watch(
1154
GLib.IOChannel.unix_new(pipe[0].fileno()),
1155
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
763
1156
self.checker_callback, pipe[0], command)
764
# Re-run this periodically if run by gobject.timeout_add
1157
# Re-run this periodically if run by GLib.timeout_add
765
1158
return True
766
1159
767
1160
def stop_checker(self):
768
1161
"""Force the checker process, if any, to stop."""
769
1162
if self.checker_callback_tag:
770
gobject.source_remove(self.checker_callback_tag)
1163
GLib.source_remove(self.checker_callback_tag)
771
1164
self.checker_callback_tag = None
772
1165
if getattr(self, "checker", None) is None:
773
1166
return
782
1175
byte_arrays=False):
783
1176
"""Decorators for marking methods of a DBusObjectWithProperties to
784
1177
become properties on the D-Bus.
785
1178
786
1179
The decorated method will be called with no arguments by "Get"
787
1180
and with one argument by "Set".
788
1181
789
1182
The parameters, where they are supported, are the same as
790
1183
dbus.service.method, except there is only "signature", since the
791
1184
type from Get() and the type sent to Set() is the same.
795
1188
if byte_arrays and signature != "ay":
796
1189
raise ValueError("Byte arrays not supported for non-'ay'"
797
1190
" signature {!r}".format(signature))
798
1191
799
1192
def decorator(func):
800
1193
func._dbus_is_property = True
801
1194
func._dbus_interface = dbus_interface
804
1197
func._dbus_name = func.__name__
805
1198
if func._dbus_name.endswith("_dbus_property"):
806
1199
func._dbus_name = func._dbus_name[:-14]
807
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
1200
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
808
1201
return func
809
1202
810
1203
return decorator
811
1204
812
1205
813
1206
def dbus_interface_annotations(dbus_interface):
814
1207
"""Decorator for marking functions returning interface annotations
815
1208
816
1209
Usage:
817
1210
818
1211
@dbus_interface_annotations("org.example.Interface")
819
1212
def _foo(self): # Function name does not matter
820
1213
return {"org.freedesktop.DBus.Deprecated": "true",
821
1214
"org.freedesktop.DBus.Property.EmitsChangedSignal":
822
1215
"false"}
823
1216
"""
824
1217
825
1218
def decorator(func):
826
1219
func._dbus_is_interface = True
827
1220
func._dbus_interface = dbus_interface
828
1221
func._dbus_name = dbus_interface
829
1222
return func
830
1223
831
1224
return decorator
832
1225
833
1226
834
1227
def dbus_annotations(annotations):
835
1228
"""Decorator to annotate D-Bus methods, signals or properties
836
1229
Usage:
837
1230
838
1231
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
839
1232
"org.freedesktop.DBus.Property."
840
1233
"EmitsChangedSignal": "false"})
842
1235
access="r")
843
1236
def Property_dbus_property(self):
844
1237
return dbus.Boolean(False)
1238
1239
See also the DBusObjectWithAnnotations class.
845
1240
"""
846
1241
847
1242
def decorator(func):
848
1243
func._dbus_annotations = annotations
849
1244
return func
850
1245
851
1246
return decorator
852
1247
853
1248
869
1264
pass
870
1265
871
1266
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.
1267
class DBusObjectWithAnnotations(dbus.service.Object):
1268
"""A D-Bus object with annotations.
1269
1270
Classes inheriting from this can use the dbus_annotations
1271
decorator to add annotations to methods or signals.
878
1272
"""
879
1273
880
1274
@staticmethod
881
1275
def _is_dbus_thing(thing):
882
1276
"""Returns a function testing if an attribute is a D-Bus thing
883
1277
884
1278
If called like _is_dbus_thing("method") it returns a function
885
1279
suitable for use as predicate to inspect.getmembers().
886
1280
"""
887
1281
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
888
1282
False)
889
1283
890
1284
def _get_all_dbus_things(self, thing):
891
1285
"""Returns a generator of (name, attribute) pairs
892
1286
"""
895
1289
for cls in self.__class__.__mro__
896
1290
for name, athing in
897
1291
inspect.getmembers(cls, self._is_dbus_thing(thing)))
898
1292
1293
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1294
out_signature="s",
1295
path_keyword='object_path',
1296
connection_keyword='connection')
1297
def Introspect(self, object_path, connection):
1298
"""Overloading of standard D-Bus method.
1299
1300
Inserts annotation tags on methods and signals.
1301
"""
1302
xmlstring = dbus.service.Object.Introspect(self, object_path,
1303
connection)
1304
try:
1305
document = xml.dom.minidom.parseString(xmlstring)
1306
1307
for if_tag in document.getElementsByTagName("interface"):
1308
# Add annotation tags
1309
for typ in ("method", "signal"):
1310
for tag in if_tag.getElementsByTagName(typ):
1311
annots = dict()
1312
for name, prop in (self.
1313
_get_all_dbus_things(typ)):
1314
if (name == tag.getAttribute("name")
1315
and prop._dbus_interface
1316
== if_tag.getAttribute("name")):
1317
annots.update(getattr(
1318
prop, "_dbus_annotations", {}))
1319
for name, value in annots.items():
1320
ann_tag = document.createElement(
1321
"annotation")
1322
ann_tag.setAttribute("name", name)
1323
ann_tag.setAttribute("value", value)
1324
tag.appendChild(ann_tag)
1325
# Add interface annotation tags
1326
for annotation, value in dict(
1327
itertools.chain.from_iterable(
1328
annotations().items()
1329
for name, annotations
1330
in self._get_all_dbus_things("interface")
1331
if name == if_tag.getAttribute("name")
1332
)).items():
1333
ann_tag = document.createElement("annotation")
1334
ann_tag.setAttribute("name", annotation)
1335
ann_tag.setAttribute("value", value)
1336
if_tag.appendChild(ann_tag)
1337
# Fix argument name for the Introspect method itself
1338
if (if_tag.getAttribute("name")
1339
== dbus.INTROSPECTABLE_IFACE):
1340
for cn in if_tag.getElementsByTagName("method"):
1341
if cn.getAttribute("name") == "Introspect":
1342
for arg in cn.getElementsByTagName("arg"):
1343
if (arg.getAttribute("direction")
1344
== "out"):
1345
arg.setAttribute("name",
1346
"xml_data")
1347
xmlstring = document.toxml("utf-8")
1348
document.unlink()
1349
except (AttributeError, xml.dom.DOMException,
1350
xml.parsers.expat.ExpatError) as error:
1351
logger.error("Failed to override Introspection method",
1352
exc_info=error)
1353
return xmlstring
1354
1355
1356
class DBusObjectWithProperties(DBusObjectWithAnnotations):
1357
"""A D-Bus object with properties.
1358
1359
Classes inheriting from this can use the dbus_service_property
1360
decorator to expose methods as D-Bus properties. It exposes the
1361
standard Get(), Set(), and GetAll() methods on the D-Bus.
1362
"""
1363
899
1364
def _get_dbus_property(self, interface_name, property_name):
900
1365
"""Returns a bound method if one exists which is a D-Bus
901
1366
property with the specified name and interface.
906
1371
if (value._dbus_name == property_name
907
1372
and value._dbus_interface == interface_name):
908
1373
return value.__get__(self)
909
1374
910
1375
# No such property
911
1376
raise DBusPropertyNotFound("{}:{}.{}".format(
912
1377
self.dbus_object_path, interface_name, property_name))
913
1378
1379
@classmethod
1380
def _get_all_interface_names(cls):
1381
"""Get a sequence of all interfaces supported by an object"""
1382
return (name for name in set(getattr(getattr(x, attr),
1383
"_dbus_interface", None)
1384
for x in (inspect.getmro(cls))
1385
for attr in dir(x))
1386
if name is not None)
1387
914
1388
@dbus.service.method(dbus.PROPERTIES_IFACE,
915
1389
in_signature="ss",
916
1390
out_signature="v")
924
1398
if not hasattr(value, "variant_level"):
925
1399
return value
926
1400
return type(value)(value, variant_level=value.variant_level+1)
927
1401
928
1402
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
929
1403
def Set(self, interface_name, property_name, value):
930
1404
"""Standard D-Bus property Set() method, see D-Bus standard.
942
1416
value = dbus.ByteArray(b''.join(chr(byte)
943
1417
for byte in value))
944
1418
prop(value)
945
1419
946
1420
@dbus.service.method(dbus.PROPERTIES_IFACE,
947
1421
in_signature="s",
948
1422
out_signature="a{sv}")
949
1423
def GetAll(self, interface_name):
950
1424
"""Standard D-Bus property GetAll() method, see D-Bus
951
1425
standard.
952
1426
953
1427
Note: Will not include properties with access="write".
954
1428
"""
955
1429
properties = {}
966
1440
properties[name] = value
967
1441
continue
968
1442
properties[name] = type(value)(
969
value, variant_level = value.variant_level + 1)
1443
value, variant_level=value.variant_level + 1)
970
1444
return dbus.Dictionary(properties, signature="sv")
971
1445
972
1446
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
973
1447
def PropertiesChanged(self, interface_name, changed_properties,
974
1448
invalidated_properties):
976
1450
standard.
977
1451
"""
978
1452
pass
979
1453
980
1454
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
981
1455
out_signature="s",
982
1456
path_keyword='object_path',
983
1457
connection_keyword='connection')
984
1458
def Introspect(self, object_path, connection):
985
1459
"""Overloading of standard D-Bus method.
986
1460
987
1461
Inserts property tags and interface annotation tags.
988
1462
"""
989
xmlstring = dbus.service.Object.Introspect(self, object_path,
990
connection)
1463
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1464
object_path,
1465
connection)
991
1466
try:
992
1467
document = xml.dom.minidom.parseString(xmlstring)
993
1468
994
1469
def make_tag(document, name, prop):
995
1470
e = document.createElement("property")
996
1471
e.setAttribute("name", name)
997
1472
e.setAttribute("type", prop._dbus_signature)
998
1473
e.setAttribute("access", prop._dbus_access)
999
1474
return e
1000
1475
1001
1476
for if_tag in document.getElementsByTagName("interface"):
1002
1477
# Add property tags
1003
1478
for tag in (make_tag(document, name, prop)
1006
1481
if prop._dbus_interface
1007
1482
== if_tag.getAttribute("name")):
1008
1483
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)
1484
# Add annotation tags for properties
1485
for tag in if_tag.getElementsByTagName("property"):
1486
annots = dict()
1487
for name, prop in self._get_all_dbus_things(
1488
"property"):
1489
if (name == tag.getAttribute("name")
1490
and prop._dbus_interface
1491
== if_tag.getAttribute("name")):
1492
annots.update(getattr(
1493
prop, "_dbus_annotations", {}))
1494
for name, value in annots.items():
1495
ann_tag = document.createElement(
1496
"annotation")
1497
ann_tag.setAttribute("name", name)
1498
ann_tag.setAttribute("value", value)
1499
tag.appendChild(ann_tag)
1038
1500
# Add the names to the return values for the
1039
1501
# "org.freedesktop.DBus.Properties" methods
1040
1502
if (if_tag.getAttribute("name")
1059
1521
return xmlstring
1060
1522
1061
1523
1524
try:
1525
dbus.OBJECT_MANAGER_IFACE
1526
except AttributeError:
1527
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1528
1529
1530
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1531
"""A D-Bus object with an ObjectManager.
1532
1533
Classes inheriting from this exposes the standard
1534
GetManagedObjects call and the InterfacesAdded and
1535
InterfacesRemoved signals on the standard
1536
"org.freedesktop.DBus.ObjectManager" interface.
1537
1538
Note: No signals are sent automatically; they must be sent
1539
manually.
1540
"""
1541
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1542
out_signature="a{oa{sa{sv}}}")
1543
def GetManagedObjects(self):
1544
"""This function must be overridden"""
1545
raise NotImplementedError()
1546
1547
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1548
signature="oa{sa{sv}}")
1549
def InterfacesAdded(self, object_path, interfaces_and_properties):
1550
pass
1551
1552
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1553
def InterfacesRemoved(self, object_path, interfaces):
1554
pass
1555
1556
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1557
out_signature="s",
1558
path_keyword='object_path',
1559
connection_keyword='connection')
1560
def Introspect(self, object_path, connection):
1561
"""Overloading of standard D-Bus method.
1562
1563
Override return argument name of GetManagedObjects to be
1564
"objpath_interfaces_and_properties"
1565
"""
1566
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1567
object_path,
1568
connection)
1569
try:
1570
document = xml.dom.minidom.parseString(xmlstring)
1571
1572
for if_tag in document.getElementsByTagName("interface"):
1573
# Fix argument name for the GetManagedObjects method
1574
if (if_tag.getAttribute("name")
1575
== dbus.OBJECT_MANAGER_IFACE):
1576
for cn in if_tag.getElementsByTagName("method"):
1577
if (cn.getAttribute("name")
1578
== "GetManagedObjects"):
1579
for arg in cn.getElementsByTagName("arg"):
1580
if (arg.getAttribute("direction")
1581
== "out"):
1582
arg.setAttribute(
1583
"name",
1584
"objpath_interfaces"
1585
"_and_properties")
1586
xmlstring = document.toxml("utf-8")
1587
document.unlink()
1588
except (AttributeError, xml.dom.DOMException,
1589
xml.parsers.expat.ExpatError) as error:
1590
logger.error("Failed to override Introspection method",
1591
exc_info=error)
1592
return xmlstring
1593
1594
1062
1595
def datetime_to_dbus(dt, variant_level=0):
1063
1596
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1064
1597
if dt is None:
1065
return dbus.String("", variant_level = variant_level)
1598
return dbus.String("", variant_level=variant_level)
1066
1599
return dbus.String(dt.isoformat(), variant_level=variant_level)
1067
1600
1068
1601
1071
1604
dbus.service.Object, it will add alternate D-Bus attributes with
1072
1605
interface names according to the "alt_interface_names" mapping.
1073
1606
Usage:
1074
1607
1075
1608
@alternate_dbus_interfaces({"org.example.Interface":
1076
1609
"net.example.AlternateInterface"})
1077
1610
class SampleDBusObject(dbus.service.Object):
1078
1611
@dbus.service.method("org.example.Interface")
1079
1612
def SampleDBusMethod():
1080
1613
pass
1081
1614
1082
1615
The above "SampleDBusMethod" on "SampleDBusObject" will be
1083
1616
reachable via two interfaces: "org.example.Interface" and
1084
1617
"net.example.AlternateInterface", the latter of which will have
1085
1618
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1086
1619
"true", unless "deprecate" is passed with a False value.
1087
1620
1088
1621
This works for methods and signals, and also for D-Bus properties
1089
1622
(from DBusObjectWithProperties) and interfaces (from the
1090
1623
dbus_interface_annotations decorator).
1091
1624
"""
1092
1625
1093
1626
def wrapper(cls):
1094
1627
for orig_interface_name, alt_interface_name in (
1095
1628
alt_interface_names.items()):
1110
1643
interface_names.add(alt_interface)
1111
1644
# Is this a D-Bus signal?
1112
1645
if getattr(attribute, "_dbus_is_signal", False):
1646
# Extract the original non-method undecorated
1647
# function by black magic
1113
1648
if sys.version_info.major == 2:
1114
# Extract the original non-method undecorated
1115
# function by black magic
1116
1649
nonmethod_func = (dict(
1117
1650
zip(attribute.func_code.co_freevars,
1118
1651
attribute.__closure__))
1119
1652
["func"].cell_contents)
1120
1653
else:
1121
nonmethod_func = attribute
1654
nonmethod_func = (dict(
1655
zip(attribute.__code__.co_freevars,
1656
attribute.__closure__))
1657
["func"].cell_contents)
1122
1658
# Create a new, but exactly alike, function
1123
1659
# object, and decorate it to be a new D-Bus signal
1124
1660
# 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__)
1661
new_function = copy_function(nonmethod_func)
1139
1662
new_function = (dbus.service.signal(
1140
1663
alt_interface,
1141
1664
attribute._dbus_signature)(new_function))
1145
1668
attribute._dbus_annotations)
1146
1669
except AttributeError:
1147
1670
pass
1671
1148
1672
# Define a creator of a function to call both the
1149
1673
# original and alternate functions, so both the
1150
1674
# original and alternate signals gets sent when
1153
1677
"""This function is a scope container to pass
1154
1678
func1 and func2 to the "call_both" function
1155
1679
outside of its arguments"""
1156
1680
1681
@functools.wraps(func2)
1157
1682
def call_both(*args, **kwargs):
1158
1683
"""This function will emit two D-Bus
1159
1684
signals by calling func1 and func2"""
1160
1685
func1(*args, **kwargs)
1161
1686
func2(*args, **kwargs)
1162
1687
# Make wrapper function look like a D-Bus
1688
# signal
1689
for name, attr in inspect.getmembers(func2):
1690
if name.startswith("_dbus_"):
1691
setattr(call_both, name, attr)
1692
1163
1693
return call_both
1164
1694
# Create the "call_both" function and add it to
1165
1695
# the class
1175
1705
alt_interface,
1176
1706
attribute._dbus_in_signature,
1177
1707
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)))
1708
(copy_function(attribute)))
1183
1709
# Copy annotations, if any
1184
1710
try:
1185
1711
attr[attrname]._dbus_annotations = dict(
1197
1723
attribute._dbus_access,
1198
1724
attribute._dbus_get_args_options
1199
1725
["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)))
1726
(copy_function(attribute)))
1206
1727
# Copy annotations, if any
1207
1728
try:
1208
1729
attr[attrname]._dbus_annotations = dict(
1217
1738
# to the class.
1218
1739
attr[attrname] = (
1219
1740
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)))
1741
(copy_function(attribute)))
1225
1742
if deprecate:
1226
1743
# Deprecate all alternate interfaces
1227
iname="_AlternateDBusNames_interface_annotation{}"
1744
iname = "_AlternateDBusNames_interface_annotation{}"
1228
1745
for interface_name in interface_names:
1229
1746
1230
1747
@dbus_interface_annotations(interface_name)
1231
1748
def func(self):
1232
return { "org.freedesktop.DBus.Deprecated":
1233
"true" }
1749
return {"org.freedesktop.DBus.Deprecated":
1750
"true"}
1234
1751
# Find an unused name
1235
1752
for aname in (iname.format(i)
1236
1753
for i in itertools.count()):
1240
1757
if interface_names:
1241
1758
# Replace the class with a new subclass of it with
1242
1759
# methods, signals, etc. as created above.
1243
cls = type(b"{}Alternate".format(cls.__name__),
1244
(cls, ), attr)
1760
if sys.version_info.major == 2:
1761
cls = type(b"{}Alternate".format(cls.__name__),
1762
(cls, ), attr)
1763
else:
1764
cls = type("{}Alternate".format(cls.__name__),
1765
(cls, ), attr)
1245
1766
return cls
1246
1767
1247
1768
return wrapper
1248
1769
1249
1770
1251
1772
"se.bsnet.fukt.Mandos"})
1252
1773
class ClientDBus(Client, DBusObjectWithProperties):
1253
1774
"""A Client class using D-Bus
1254
1775
1255
1776
Attributes:
1256
1777
dbus_object_path: dbus.ObjectPath
1257
1778
bus: dbus.SystemBus()
1258
1779
"""
1259
1780
1260
1781
runtime_expansions = (Client.runtime_expansions
1261
1782
+ ("dbus_object_path", ))
1262
1783
1263
1784
_interface = "se.recompile.Mandos.Client"
1264
1785
1265
1786
# dbus.service.Object doesn't use super(), so we can't either.
1266
1267
def __init__(self, bus = None, *args, **kwargs):
1787
1788
def __init__(self, bus=None, *args, **kwargs):
1268
1789
self.bus = bus
1269
1790
Client.__init__(self, *args, **kwargs)
1270
1791
# Only now, when this client is initialized, can it show up on
1276
1797
"/clients/" + client_object_name)
1277
1798
DBusObjectWithProperties.__init__(self, self.bus,
1278
1799
self.dbus_object_path)
1279
1800
1280
1801
def notifychangeproperty(transform_func, dbus_name,
1281
1802
type_func=lambda x: x,
1282
1803
variant_level=1,
1284
1805
_interface=_interface):
1285
1806
""" Modify a variable so that it's a property which announces
1286
1807
its changes to DBus.
1287
1808
1288
1809
transform_fun: Function that takes a value and a variant_level
1289
1810
and transforms it to a D-Bus type.
1290
1811
dbus_name: D-Bus name of the variable
1293
1814
variant_level: D-Bus variant level. Default: 1
1294
1815
"""
1295
1816
attrname = "_{}".format(dbus_name)
1296
1817
1297
1818
def setter(self, value):
1298
1819
if hasattr(self, "dbus_object_path"):
1299
1820
if (not hasattr(self, attrname) or
1306
1827
else:
1307
1828
dbus_value = transform_func(
1308
1829
type_func(value),
1309
variant_level = variant_level)
1830
variant_level=variant_level)
1310
1831
self.PropertyChanged(dbus.String(dbus_name),
1311
1832
dbus_value)
1312
1833
self.PropertiesChanged(
1313
1834
_interface,
1314
dbus.Dictionary({ dbus.String(dbus_name):
1315
dbus_value }),
1835
dbus.Dictionary({dbus.String(dbus_name):
1836
dbus_value}),
1316
1837
dbus.Array())
1317
1838
setattr(self, attrname, value)
1318
1839
1319
1840
return property(lambda self: getattr(self, attrname), setter)
1320
1841
1321
1842
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1322
1843
approvals_pending = notifychangeproperty(dbus.Boolean,
1323
1844
"ApprovalPending",
1324
type_func = bool)
1845
type_func=bool)
1325
1846
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1326
1847
last_enabled = notifychangeproperty(datetime_to_dbus,
1327
1848
"LastEnabled")
1328
1849
checker = notifychangeproperty(
1329
1850
dbus.Boolean, "CheckerRunning",
1330
type_func = lambda checker: checker is not None)
1851
type_func=lambda checker: checker is not None)
1331
1852
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1332
1853
"LastCheckedOK")
1333
1854
last_checker_status = notifychangeproperty(dbus.Int16,
1338
1859
"ApprovedByDefault")
1339
1860
approval_delay = notifychangeproperty(
1340
1861
dbus.UInt64, "ApprovalDelay",
1341
type_func = lambda td: td.total_seconds() * 1000)
1862
type_func=lambda td: td.total_seconds() * 1000)
1342
1863
approval_duration = notifychangeproperty(
1343
1864
dbus.UInt64, "ApprovalDuration",
1344
type_func = lambda td: td.total_seconds() * 1000)
1865
type_func=lambda td: td.total_seconds() * 1000)
1345
1866
host = notifychangeproperty(dbus.String, "Host")
1346
1867
timeout = notifychangeproperty(
1347
1868
dbus.UInt64, "Timeout",
1348
type_func = lambda td: td.total_seconds() * 1000)
1869
type_func=lambda td: td.total_seconds() * 1000)
1349
1870
extended_timeout = notifychangeproperty(
1350
1871
dbus.UInt64, "ExtendedTimeout",
1351
type_func = lambda td: td.total_seconds() * 1000)
1872
type_func=lambda td: td.total_seconds() * 1000)
1352
1873
interval = notifychangeproperty(
1353
1874
dbus.UInt64, "Interval",
1354
type_func = lambda td: td.total_seconds() * 1000)
1875
type_func=lambda td: td.total_seconds() * 1000)
1355
1876
checker_command = notifychangeproperty(dbus.String, "Checker")
1356
1877
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1357
1878
invalidate_only=True)
1358
1879
1359
1880
del notifychangeproperty
1360
1881
1361
1882
def __del__(self, *args, **kwargs):
1362
1883
try:
1363
1884
self.remove_from_connection()
1366
1887
if hasattr(DBusObjectWithProperties, "__del__"):
1367
1888
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1368
1889
Client.__del__(self, *args, **kwargs)
1369
1890
1370
1891
def checker_callback(self, source, condition,
1371
1892
connection, command, *args, **kwargs):
1372
1893
ret = Client.checker_callback(self, source, condition,
1376
1897
if exitstatus >= 0:
1377
1898
# Emit D-Bus signal
1378
1899
self.CheckerCompleted(dbus.Int16(exitstatus),
1379
dbus.Int64(0),
1900
# This is specific to GNU libC
1901
dbus.Int64(exitstatus << 8),
1380
1902
dbus.String(command))
1381
1903
else:
1382
1904
# Emit D-Bus signal
1383
1905
self.CheckerCompleted(dbus.Int16(-1),
1384
1906
dbus.Int64(
1385
self.last_checker_signal),
1907
# This is specific to GNU libC
1908
(exitstatus << 8)
1909
| self.last_checker_signal),
1386
1910
dbus.String(command))
1387
1911
return ret
1388
1912
1389
1913
def start_checker(self, *args, **kwargs):
1390
1914
old_checker_pid = getattr(self.checker, "pid", None)
1391
1915
r = Client.start_checker(self, *args, **kwargs)
1395
1919
# Emit D-Bus signal
1396
1920
self.CheckerStarted(self.current_checker_command)
1397
1921
return r
1398
1922
1399
1923
def _reset_approved(self):
1400
1924
self.approved = None
1401
1925
return False
1402
1926
1403
1927
def approve(self, value=True):
1404
1928
self.approved = value
1405
gobject.timeout_add(int(self.approval_duration.total_seconds()
1406
* 1000), self._reset_approved)
1929
GLib.timeout_add(int(self.approval_duration.total_seconds()
1930
* 1000), self._reset_approved)
1407
1931
self.send_changedstate()
1408
1409
## D-Bus methods, signals & properties
1410
1411
## Interfaces
1412
1413
## Signals
1414
1932
1933
# D-Bus methods, signals & properties
1934
1935
# Interfaces
1936
1937
# Signals
1938
1415
1939
# CheckerCompleted - signal
1416
1940
@dbus.service.signal(_interface, signature="nxs")
1417
1941
def CheckerCompleted(self, exitcode, waitstatus, command):
1418
1942
"D-Bus signal"
1419
1943
pass
1420
1944
1421
1945
# CheckerStarted - signal
1422
1946
@dbus.service.signal(_interface, signature="s")
1423
1947
def CheckerStarted(self, command):
1424
1948
"D-Bus signal"
1425
1949
pass
1426
1950
1427
1951
# PropertyChanged - signal
1428
1952
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1429
1953
@dbus.service.signal(_interface, signature="sv")
1430
1954
def PropertyChanged(self, property, value):
1431
1955
"D-Bus signal"
1432
1956
pass
1433
1957
1434
1958
# GotSecret - signal
1435
1959
@dbus.service.signal(_interface)
1436
1960
def GotSecret(self):
1439
1963
server to mandos-client
1440
1964
"""
1441
1965
pass
1442
1966
1443
1967
# Rejected - signal
1444
1968
@dbus.service.signal(_interface, signature="s")
1445
1969
def Rejected(self, reason):
1446
1970
"D-Bus signal"
1447
1971
pass
1448
1972
1449
1973
# NeedApproval - signal
1450
1974
@dbus.service.signal(_interface, signature="tb")
1451
1975
def NeedApproval(self, timeout, default):
1452
1976
"D-Bus signal"
1453
1977
return self.need_approval()
1454
1455
## Methods
1456
1978
1979
# Methods
1980
1457
1981
# Approve - method
1458
1982
@dbus.service.method(_interface, in_signature="b")
1459
1983
def Approve(self, value):
1460
1984
self.approve(value)
1461
1985
1462
1986
# CheckedOK - method
1463
1987
@dbus.service.method(_interface)
1464
1988
def CheckedOK(self):
1465
1989
self.checked_ok()
1466
1990
1467
1991
# Enable - method
1992
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1468
1993
@dbus.service.method(_interface)
1469
1994
def Enable(self):
1470
1995
"D-Bus method"
1471
1996
self.enable()
1472
1997
1473
1998
# StartChecker - method
1999
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1474
2000
@dbus.service.method(_interface)
1475
2001
def StartChecker(self):
1476
2002
"D-Bus method"
1477
2003
self.start_checker()
1478
2004
1479
2005
# Disable - method
2006
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1480
2007
@dbus.service.method(_interface)
1481
2008
def Disable(self):
1482
2009
"D-Bus method"
1483
2010
self.disable()
1484
2011
1485
2012
# StopChecker - method
2013
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1486
2014
@dbus.service.method(_interface)
1487
2015
def StopChecker(self):
1488
2016
self.stop_checker()
1489
1490
## Properties
1491
2017
2018
# Properties
2019
1492
2020
# ApprovalPending - property
1493
2021
@dbus_service_property(_interface, signature="b", access="read")
1494
2022
def ApprovalPending_dbus_property(self):
1495
2023
return dbus.Boolean(bool(self.approvals_pending))
1496
2024
1497
2025
# ApprovedByDefault - property
1498
2026
@dbus_service_property(_interface,
1499
2027
signature="b",
1502
2030
if value is None: # get
1503
2031
return dbus.Boolean(self.approved_by_default)
1504
2032
self.approved_by_default = bool(value)
1505
2033
1506
2034
# ApprovalDelay - property
1507
2035
@dbus_service_property(_interface,
1508
2036
signature="t",
1512
2040
return dbus.UInt64(self.approval_delay.total_seconds()
1513
2041
* 1000)
1514
2042
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1515
2043
1516
2044
# ApprovalDuration - property
1517
2045
@dbus_service_property(_interface,
1518
2046
signature="t",
1522
2050
return dbus.UInt64(self.approval_duration.total_seconds()
1523
2051
* 1000)
1524
2052
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1525
2053
1526
2054
# Name - property
2055
@dbus_annotations(
2056
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1527
2057
@dbus_service_property(_interface, signature="s", access="read")
1528
2058
def Name_dbus_property(self):
1529
2059
return dbus.String(self.name)
1530
2060
2061
# KeyID - property
2062
@dbus_annotations(
2063
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2064
@dbus_service_property(_interface, signature="s", access="read")
2065
def KeyID_dbus_property(self):
2066
return dbus.String(self.key_id)
2067
1531
2068
# Fingerprint - property
2069
@dbus_annotations(
2070
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1532
2071
@dbus_service_property(_interface, signature="s", access="read")
1533
2072
def Fingerprint_dbus_property(self):
1534
2073
return dbus.String(self.fingerprint)
1535
2074
1536
2075
# Host - property
1537
2076
@dbus_service_property(_interface,
1538
2077
signature="s",
1541
2080
if value is None: # get
1542
2081
return dbus.String(self.host)
1543
2082
self.host = str(value)
1544
2083
1545
2084
# Created - property
2085
@dbus_annotations(
2086
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1546
2087
@dbus_service_property(_interface, signature="s", access="read")
1547
2088
def Created_dbus_property(self):
1548
2089
return datetime_to_dbus(self.created)
1549
2090
1550
2091
# LastEnabled - property
1551
2092
@dbus_service_property(_interface, signature="s", access="read")
1552
2093
def LastEnabled_dbus_property(self):
1553
2094
return datetime_to_dbus(self.last_enabled)
1554
2095
1555
2096
# Enabled - property
1556
2097
@dbus_service_property(_interface,
1557
2098
signature="b",
1563
2104
self.enable()
1564
2105
else:
1565
2106
self.disable()
1566
2107
1567
2108
# LastCheckedOK - property
1568
2109
@dbus_service_property(_interface,
1569
2110
signature="s",
1573
2114
self.checked_ok()
1574
2115
return
1575
2116
return datetime_to_dbus(self.last_checked_ok)
1576
2117
1577
2118
# LastCheckerStatus - property
1578
2119
@dbus_service_property(_interface, signature="n", access="read")
1579
2120
def LastCheckerStatus_dbus_property(self):
1580
2121
return dbus.Int16(self.last_checker_status)
1581
2122
1582
2123
# Expires - property
1583
2124
@dbus_service_property(_interface, signature="s", access="read")
1584
2125
def Expires_dbus_property(self):
1585
2126
return datetime_to_dbus(self.expires)
1586
2127
1587
2128
# LastApprovalRequest - property
1588
2129
@dbus_service_property(_interface, signature="s", access="read")
1589
2130
def LastApprovalRequest_dbus_property(self):
1590
2131
return datetime_to_dbus(self.last_approval_request)
1591
2132
1592
2133
# Timeout - property
1593
2134
@dbus_service_property(_interface,
1594
2135
signature="t",
1609
2150
if (getattr(self, "disable_initiator_tag", None)
1610
2151
is None):
1611
2152
return
1612
gobject.source_remove(self.disable_initiator_tag)
1613
self.disable_initiator_tag = gobject.timeout_add(
2153
GLib.source_remove(self.disable_initiator_tag)
2154
self.disable_initiator_tag = GLib.timeout_add(
1614
2155
int((self.expires - now).total_seconds() * 1000),
1615
2156
self.disable)
1616
2157
1617
2158
# ExtendedTimeout - property
1618
2159
@dbus_service_property(_interface,
1619
2160
signature="t",
1623
2164
return dbus.UInt64(self.extended_timeout.total_seconds()
1624
2165
* 1000)
1625
2166
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1626
2167
1627
2168
# Interval - property
1628
2169
@dbus_service_property(_interface,
1629
2170
signature="t",
1636
2177
return
1637
2178
if self.enabled:
1638
2179
# Reschedule checker run
1639
gobject.source_remove(self.checker_initiator_tag)
1640
self.checker_initiator_tag = gobject.timeout_add(
2180
GLib.source_remove(self.checker_initiator_tag)
2181
self.checker_initiator_tag = GLib.timeout_add(
1641
2182
value, self.start_checker)
1642
self.start_checker() # Start one now, too
1643
2183
self.start_checker() # Start one now, too
2184
1644
2185
# Checker - property
1645
2186
@dbus_service_property(_interface,
1646
2187
signature="s",
1649
2190
if value is None: # get
1650
2191
return dbus.String(self.checker_command)
1651
2192
self.checker_command = str(value)
1652
2193
1653
2194
# CheckerRunning - property
1654
2195
@dbus_service_property(_interface,
1655
2196
signature="b",
1661
2202
self.start_checker()
1662
2203
else:
1663
2204
self.stop_checker()
1664
2205
1665
2206
# ObjectPath - property
2207
@dbus_annotations(
2208
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2209
"org.freedesktop.DBus.Deprecated": "true"})
1666
2210
@dbus_service_property(_interface, signature="o", access="read")
1667
2211
def ObjectPath_dbus_property(self):
1668
return self.dbus_object_path # is already a dbus.ObjectPath
1669
2212
return self.dbus_object_path # is already a dbus.ObjectPath
2213
1670
2214
# Secret = property
2215
@dbus_annotations(
2216
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2217
"invalidates"})
1671
2218
@dbus_service_property(_interface,
1672
2219
signature="ay",
1673
2220
access="write",
1674
2221
byte_arrays=True)
1675
2222
def Secret_dbus_property(self, value):
1676
2223
self.secret = bytes(value)
1677
2224
1678
2225
del _interface
1679
2226
1680
2227
1681
class ProxyClient(object):
1682
def __init__(self, child_pipe, fpr, address):
2228
class ProxyClient:
2229
def __init__(self, child_pipe, key_id, fpr, address):
1683
2230
self._pipe = child_pipe
1684
self._pipe.send(('init', fpr, address))
2231
self._pipe.send(('init', key_id, fpr, address))
1685
2232
if not self._pipe.recv():
1686
raise KeyError(fpr)
1687
2233
raise KeyError(key_id or fpr)
2234
1688
2235
def __getattribute__(self, name):
1689
2236
if name == '_pipe':
1690
2237
return super(ProxyClient, self).__getattribute__(name)
1693
2240
if data[0] == 'data':
1694
2241
return data[1]
1695
2242
if data[0] == 'function':
1696
2243
1697
2244
def func(*args, **kwargs):
1698
2245
self._pipe.send(('funcall', name, args, kwargs))
1699
2246
return self._pipe.recv()[1]
1700
2247
1701
2248
return func
1702
2249
1703
2250
def __setattr__(self, name, value):
1704
2251
if name == '_pipe':
1705
2252
return super(ProxyClient, self).__setattr__(name, value)
1708
2255
1709
2256
class ClientHandler(socketserver.BaseRequestHandler, object):
1710
2257
"""A class to handle client connections.
1711
2258
1712
2259
Instantiated once for each connection to handle it.
1713
2260
Note: This will run in its own forked process."""
1714
2261
1715
2262
def handle(self):
1716
2263
with contextlib.closing(self.server.child_pipe) as child_pipe:
1717
2264
logger.info("TCP connection from: %s",
1718
2265
str(self.client_address))
1719
2266
logger.debug("Pipe FD: %d",
1720
2267
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"))
2268
2269
session = gnutls.ClientSession(self.request)
2270
2271
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2272
# "+AES-256-CBC", "+SHA1",
2273
# "+COMP-NULL", "+CTYPE-OPENPGP",
2274
# "+DHE-DSS"))
1734
2275
# Use a fallback default, since this MUST be set.
1735
2276
priority = self.server.gnutls_priority
1736
2277
if priority is None:
1737
2278
priority = "NORMAL"
1738
gnutls.library.functions.gnutls_priority_set_direct(
1739
session._c_object, priority, None)
1740
2279
gnutls.priority_set_direct(session._c_object,
2280
priority.encode("utf-8"),
2281
None)
2282
1741
2283
# Start communication using the Mandos protocol
1742
2284
# Get protocol number
1743
2285
line = self.request.makefile().readline()
1748
2290
except (ValueError, IndexError, RuntimeError) as error:
1749
2291
logger.error("Unknown protocol version: %s", error)
1750
2292
return
1751
2293
1752
2294
# Start GnuTLS connection
1753
2295
try:
1754
2296
session.handshake()
1755
except gnutls.errors.GNUTLSError as error:
2297
except gnutls.Error as error:
1756
2298
logger.warning("Handshake failed: %s", error)
1757
2299
# Do not run session.bye() here: the session is not
1758
2300
# established. Just abandon the request.
1759
2301
return
1760
2302
logger.debug("Handshake succeeded")
1761
2303
1762
2304
approval_required = False
1763
2305
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,
2306
if gnutls.has_rawpk:
2307
fpr = b""
2308
try:
2309
key_id = self.key_id(
2310
self.peer_certificate(session))
2311
except (TypeError, gnutls.Error) as error:
2312
logger.warning("Bad certificate: %s", error)
2313
return
2314
logger.debug("Key ID: %s", key_id)
2315
2316
else:
2317
key_id = b""
2318
try:
2319
fpr = self.fingerprint(
2320
self.peer_certificate(session))
2321
except (TypeError, gnutls.Error) as error:
2322
logger.warning("Bad certificate: %s", error)
2323
return
2324
logger.debug("Fingerprint: %s", fpr)
2325
2326
try:
2327
client = ProxyClient(child_pipe, key_id, fpr,
1775
2328
self.client_address)
1776
2329
except KeyError:
1777
2330
return
1778
2331
1779
2332
if client.approval_delay:
1780
2333
delay = client.approval_delay
1781
2334
client.approvals_pending += 1
1782
2335
approval_required = True
1783
2336
1784
2337
while True:
1785
2338
if not client.enabled:
1786
2339
logger.info("Client %s is disabled",
1789
2342
# Emit D-Bus signal
1790
2343
client.Rejected("Disabled")
1791
2344
return
1792
2345
1793
2346
if client.approved or not client.approval_delay:
1794
#We are approved or approval is disabled
2347
# We are approved or approval is disabled
1795
2348
break
1796
2349
elif client.approved is None:
1797
2350
logger.info("Client %s needs approval",
1808
2361
# Emit D-Bus signal
1809
2362
client.Rejected("Denied")
1810
2363
return
1811
1812
#wait until timeout or approved
2364
2365
# wait until timeout or approved
1813
2366
time = datetime.datetime.now()
1814
2367
client.changedstate.acquire()
1815
2368
client.changedstate.wait(delay.total_seconds())
1828
2381
break
1829
2382
else:
1830
2383
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
2384
2385
try:
2386
session.send(client.secret)
2387
except gnutls.Error as error:
2388
logger.warning("gnutls send failed",
2389
exc_info=error)
2390
return
2391
1845
2392
logger.info("Sending secret to %s", client.name)
1846
2393
# bump the timeout using extended_timeout
1847
2394
client.bump_timeout(client.extended_timeout)
1848
2395
if self.server.use_dbus:
1849
2396
# Emit D-Bus signal
1850
2397
client.GotSecret()
1851
2398
1852
2399
finally:
1853
2400
if approval_required:
1854
2401
client.approvals_pending -= 1
1855
2402
try:
1856
2403
session.bye()
1857
except gnutls.errors.GNUTLSError as error:
2404
except gnutls.Error as error:
1858
2405
logger.warning("GnuTLS bye failed",
1859
2406
exc_info=error)
1860
2407
1861
2408
@staticmethod
1862
2409
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
2410
"Return the peer's certificate as a bytestring"
2411
try:
2412
cert_type = gnutls.certificate_type_get2(session._c_object,
2413
gnutls.CTYPE_PEERS)
2414
except AttributeError:
2415
cert_type = gnutls.certificate_type_get(session._c_object)
2416
if gnutls.has_rawpk:
2417
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2418
else:
2419
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2420
# If not a valid certificate type...
2421
if cert_type not in valid_cert_types:
2422
logger.info("Cert type %r not in %r", cert_type,
2423
valid_cert_types)
2424
# ...return invalid data
2425
return b""
1870
2426
list_size = ctypes.c_uint(1)
1871
cert_list = (gnutls.library.functions
1872
.gnutls_certificate_get_peers
2427
cert_list = (gnutls.certificate_get_peers
1873
2428
(session._c_object, ctypes.byref(list_size)))
1874
2429
if not bool(cert_list) and list_size.value != 0:
1875
raise gnutls.errors.GNUTLSError("error getting peer"
1876
" certificate")
2430
raise gnutls.Error("error getting peer certificate")
1877
2431
if list_size.value == 0:
1878
2432
return None
1879
2433
cert = cert_list[0]
1880
2434
return ctypes.string_at(cert.data, cert.size)
1881
2435
2436
@staticmethod
2437
def key_id(certificate):
2438
"Convert a certificate bytestring to a hexdigit key ID"
2439
# New GnuTLS "datum" with the public key
2440
datum = gnutls.datum_t(
2441
ctypes.cast(ctypes.c_char_p(certificate),
2442
ctypes.POINTER(ctypes.c_ubyte)),
2443
ctypes.c_uint(len(certificate)))
2444
# XXX all these need to be created in the gnutls "module"
2445
# New empty GnuTLS certificate
2446
pubkey = gnutls.pubkey_t()
2447
gnutls.pubkey_init(ctypes.byref(pubkey))
2448
# Import the raw public key into the certificate
2449
gnutls.pubkey_import(pubkey,
2450
ctypes.byref(datum),
2451
gnutls.X509_FMT_DER)
2452
# New buffer for the key ID
2453
buf = ctypes.create_string_buffer(32)
2454
buf_len = ctypes.c_size_t(len(buf))
2455
# Get the key ID from the raw public key into the buffer
2456
gnutls.pubkey_get_key_id(pubkey,
2457
gnutls.KEYID_USE_SHA256,
2458
ctypes.cast(ctypes.byref(buf),
2459
ctypes.POINTER(ctypes.c_ubyte)),
2460
ctypes.byref(buf_len))
2461
# Deinit the certificate
2462
gnutls.pubkey_deinit(pubkey)
2463
2464
# Convert the buffer to a Python bytestring
2465
key_id = ctypes.string_at(buf, buf_len.value)
2466
# Convert the bytestring to hexadecimal notation
2467
hex_key_id = binascii.hexlify(key_id).upper()
2468
return hex_key_id
2469
1882
2470
@staticmethod
1883
2471
def fingerprint(openpgp):
1884
2472
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1885
2473
# New GnuTLS "datum" with the OpenPGP public key
1886
datum = gnutls.library.types.gnutls_datum_t(
2474
datum = gnutls.datum_t(
1887
2475
ctypes.cast(ctypes.c_char_p(openpgp),
1888
2476
ctypes.POINTER(ctypes.c_ubyte)),
1889
2477
ctypes.c_uint(len(openpgp)))
1890
2478
# 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))
2479
crt = gnutls.openpgp_crt_t()
2480
gnutls.openpgp_crt_init(ctypes.byref(crt))
1894
2481
# 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)
2482
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2483
gnutls.OPENPGP_FMT_RAW)
1898
2484
# Verify the self signature in the key
1899
2485
crtverify = ctypes.c_uint()
1900
gnutls.library.functions.gnutls_openpgp_crt_verify_self(
1901
crt, 0, ctypes.byref(crtverify))
2486
gnutls.openpgp_crt_verify_self(crt, 0,
2487
ctypes.byref(crtverify))
1902
2488
if crtverify.value != 0:
1903
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1904
raise gnutls.errors.CertificateSecurityError(
1905
"Verify failed")
2489
gnutls.openpgp_crt_deinit(crt)
2490
raise gnutls.CertificateSecurityError(code
2491
=crtverify.value)
1906
2492
# New buffer for the fingerprint
1907
2493
buf = ctypes.create_string_buffer(20)
1908
2494
buf_len = ctypes.c_size_t()
1909
2495
# 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))
2496
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2497
ctypes.byref(buf_len))
1912
2498
# Deinit the certificate
1913
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2499
gnutls.openpgp_crt_deinit(crt)
1914
2500
# Convert the buffer to a Python bytestring
1915
2501
fpr = ctypes.string_at(buf, buf_len.value)
1916
2502
# Convert the bytestring to hexadecimal notation
1918
2504
return hex_fpr
1919
2505
1920
2506
1921
class MultiprocessingMixIn(object):
2507
class MultiprocessingMixIn:
1922
2508
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
1923
2509
1924
2510
def sub_process_main(self, request, address):
1925
2511
try:
1926
2512
self.finish_request(request, address)
1927
2513
except Exception:
1928
2514
self.handle_error(request, address)
1929
2515
self.close_request(request)
1930
2516
1931
2517
def process_request(self, request, address):
1932
2518
"""Start a new process to process the request."""
1933
proc = multiprocessing.Process(target = self.sub_process_main,
1934
args = (request, address))
2519
proc = multiprocessing.Process(target=self.sub_process_main,
2520
args=(request, address))
1935
2521
proc.start()
1936
2522
return proc
1937
2523
1938
2524
1939
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2525
class MultiprocessingMixInWithPipe(MultiprocessingMixIn):
1940
2526
""" adds a pipe to the MixIn """
1941
2527
1942
2528
def process_request(self, request, client_address):
1943
2529
"""Overrides and wraps the original process_request().
1944
2530
1945
2531
This function creates a new pipe in self.pipe
1946
2532
"""
1947
2533
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1948
2534
1949
2535
proc = MultiprocessingMixIn.process_request(self, request,
1950
2536
client_address)
1951
2537
self.child_pipe.close()
1952
2538
self.add_pipe(parent_pipe, proc)
1953
2539
1954
2540
def add_pipe(self, parent_pipe, proc):
1955
2541
"""Dummy function; override as necessary"""
1956
2542
raise NotImplementedError()
1957
2543
1958
2544
1959
2545
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1960
socketserver.TCPServer, object):
2546
socketserver.TCPServer):
1961
2547
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1962
2548
1963
2549
Attributes:
1964
2550
enabled: Boolean; whether this server is activated yet
1965
2551
interface: None or a network interface name (string)
1966
2552
use_ipv6: Boolean; to use IPv6 or not
1967
2553
"""
1968
2554
1969
2555
def __init__(self, server_address, RequestHandlerClass,
1970
2556
interface=None,
1971
2557
use_ipv6=True,
1981
2567
self.socketfd = socketfd
1982
2568
# Save the original socket.socket() function
1983
2569
self.socket_socket = socket.socket
2570
1984
2571
# To implement --socket, we monkey patch socket.socket.
1985
#
2572
#
1986
2573
# (When socketserver.TCPServer is a new-style class, we
1987
2574
# could make self.socket into a property instead of monkey
1988
2575
# patching socket.socket.)
1989
#
2576
#
1990
2577
# Create a one-time-only replacement for socket.socket()
1991
2578
@functools.wraps(socket.socket)
1992
2579
def socket_wrapper(*args, **kwargs):
2004
2591
# socket_wrapper(), if socketfd was set.
2005
2592
socketserver.TCPServer.__init__(self, server_address,
2006
2593
RequestHandlerClass)
2007
2594
2008
2595
def server_bind(self):
2009
2596
"""This overrides the normal server_bind() function
2010
2597
to bind to an interface if one was specified, and also NOT to
2011
2598
bind to an address or port if they were not specified."""
2599
global SO_BINDTODEVICE
2012
2600
if self.interface is not None:
2013
2601
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
2602
# Fall back to a hard-coded value which seems to be
2603
# common enough.
2604
logger.warning("SO_BINDTODEVICE not found, trying 25")
2605
SO_BINDTODEVICE = 25
2606
try:
2607
self.socket.setsockopt(
2608
socket.SOL_SOCKET, SO_BINDTODEVICE,
2609
(self.interface + "\0").encode("utf-8"))
2610
except socket.error as error:
2611
if error.errno == errno.EPERM:
2612
logger.error("No permission to bind to"
2613
" interface %s", self.interface)
2614
elif error.errno == errno.ENOPROTOOPT:
2615
logger.error("SO_BINDTODEVICE not available;"
2616
" cannot bind to interface %s",
2617
self.interface)
2618
elif error.errno == errno.ENODEV:
2619
logger.error("Interface %s does not exist,"
2620
" cannot bind", self.interface)
2621
else:
2622
raise
2035
2623
# Only bind(2) the socket if we really need to.
2036
2624
if self.server_address[0] or self.server_address[1]:
2625
if self.server_address[1]:
2626
self.allow_reuse_address = True
2037
2627
if not self.server_address[0]:
2038
2628
if self.address_family == socket.AF_INET6:
2039
any_address = "::" # in6addr_any
2629
any_address = "::" # in6addr_any
2040
2630
else:
2041
any_address = "0.0.0.0" # INADDR_ANY
2631
any_address = "0.0.0.0" # INADDR_ANY
2042
2632
self.server_address = (any_address,
2043
2633
self.server_address[1])
2044
2634
elif not self.server_address[1]:
2054
2644
2055
2645
class MandosServer(IPv6_TCPServer):
2056
2646
"""Mandos server.
2057
2647
2058
2648
Attributes:
2059
2649
clients: set of Client objects
2060
2650
gnutls_priority GnuTLS priority string
2061
2651
use_dbus: Boolean; to emit D-Bus signals or not
2062
2063
Assumes a gobject.MainLoop event loop.
2652
2653
Assumes a GLib.MainLoop event loop.
2064
2654
"""
2065
2655
2066
2656
def __init__(self, server_address, RequestHandlerClass,
2067
2657
interface=None,
2068
2658
use_ipv6=True,
2078
2668
self.gnutls_priority = gnutls_priority
2079
2669
IPv6_TCPServer.__init__(self, server_address,
2080
2670
RequestHandlerClass,
2081
interface = interface,
2082
use_ipv6 = use_ipv6,
2083
socketfd = socketfd)
2084
2671
interface=interface,
2672
use_ipv6=use_ipv6,
2673
socketfd=socketfd)
2674
2085
2675
def server_activate(self):
2086
2676
if self.enabled:
2087
2677
return socketserver.TCPServer.server_activate(self)
2088
2678
2089
2679
def enable(self):
2090
2680
self.enabled = True
2091
2681
2092
2682
def add_pipe(self, parent_pipe, proc):
2093
2683
# 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,
2684
GLib.io_add_watch(
2685
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2686
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2097
2687
functools.partial(self.handle_ipc,
2098
parent_pipe = parent_pipe,
2099
proc = proc))
2100
2688
parent_pipe=parent_pipe,
2689
proc=proc))
2690
2101
2691
def handle_ipc(self, source, condition,
2102
2692
parent_pipe=None,
2103
proc = None,
2693
proc=None,
2104
2694
client_object=None):
2105
2695
# error, or the other end of multiprocessing.Pipe has closed
2106
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2696
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2107
2697
# Wait for other process to exit
2108
2698
proc.join()
2109
2699
return False
2110
2700
2111
2701
# Read a request from the child
2112
2702
request = parent_pipe.recv()
2113
2703
command = request[0]
2114
2704
2115
2705
if command == 'init':
2116
fpr = request[1]
2117
address = request[2]
2118
2119
for c in self.clients.itervalues():
2120
if c.fingerprint == fpr:
2706
key_id = request[1].decode("ascii")
2707
fpr = request[2].decode("ascii")
2708
address = request[3]
2709
2710
for c in self.clients.values():
2711
if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2712
continue
2713
if key_id and c.key_id == key_id:
2714
client = c
2715
break
2716
if fpr and c.fingerprint == fpr:
2121
2717
client = c
2122
2718
break
2123
2719
else:
2124
logger.info("Client not found for fingerprint: %s, ad"
2125
"dress: %s", fpr, address)
2720
logger.info("Client not found for key ID: %s, address"
2721
": %s", key_id or fpr, address)
2126
2722
if self.use_dbus:
2127
2723
# Emit D-Bus signal
2128
mandos_dbus_service.ClientNotFound(fpr,
2724
mandos_dbus_service.ClientNotFound(key_id or fpr,
2129
2725
address[0])
2130
2726
parent_pipe.send(False)
2131
2727
return False
2132
2133
gobject.io_add_watch(
2134
parent_pipe.fileno(),
2135
gobject.IO_IN | gobject.IO_HUP,
2728
2729
GLib.io_add_watch(
2730
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2731
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2136
2732
functools.partial(self.handle_ipc,
2137
parent_pipe = parent_pipe,
2138
proc = proc,
2139
client_object = client))
2733
parent_pipe=parent_pipe,
2734
proc=proc,
2735
client_object=client))
2140
2736
parent_pipe.send(True)
2141
2737
# remove the old hook in favor of the new above hook on
2142
2738
# same fileno
2145
2741
funcname = request[1]
2146
2742
args = request[2]
2147
2743
kwargs = request[3]
2148
2744
2149
2745
parent_pipe.send(('data', getattr(client_object,
2150
2746
funcname)(*args,
2151
2747
**kwargs)))
2152
2748
2153
2749
if command == 'getattr':
2154
2750
attrname = request[1]
2155
2751
if isinstance(client_object.__getattribute__(attrname),
2158
2754
else:
2159
2755
parent_pipe.send((
2160
2756
'data', client_object.__getattribute__(attrname)))
2161
2757
2162
2758
if command == 'setattr':
2163
2759
attrname = request[1]
2164
2760
value = request[2]
2165
2761
setattr(client_object, attrname, value)
2166
2762
2167
2763
return True
2168
2764
2169
2765
2170
2766
def rfc3339_duration_to_delta(duration):
2171
2767
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2172
2173
>>> rfc3339_duration_to_delta("P7D")
2174
datetime.timedelta(7)
2175
>>> rfc3339_duration_to_delta("PT60S")
2176
datetime.timedelta(0, 60)
2177
>>> rfc3339_duration_to_delta("PT60M")
2178
datetime.timedelta(0, 3600)
2179
>>> rfc3339_duration_to_delta("PT24H")
2180
datetime.timedelta(1)
2181
>>> rfc3339_duration_to_delta("P1W")
2182
datetime.timedelta(7)
2183
>>> rfc3339_duration_to_delta("PT5M30S")
2184
datetime.timedelta(0, 330)
2185
>>> rfc3339_duration_to_delta("P1DT3M20S")
2186
datetime.timedelta(1, 200)
2768
2769
>>> rfc3339_duration_to_delta("P7D") == datetime.timedelta(7)
2770
True
2771
>>> rfc3339_duration_to_delta("PT60S") == datetime.timedelta(0, 60)
2772
True
2773
>>> rfc3339_duration_to_delta("PT60M") == datetime.timedelta(0, 3600)
2774
True
2775
>>> rfc3339_duration_to_delta("PT24H") == datetime.timedelta(1)
2776
True
2777
>>> rfc3339_duration_to_delta("P1W") == datetime.timedelta(7)
2778
True
2779
>>> rfc3339_duration_to_delta("PT5M30S") == datetime.timedelta(0, 330)
2780
True
2781
>>> rfc3339_duration_to_delta("P1DT3M20S") == datetime.timedelta(1, 200)
2782
True
2187
2783
"""
2188
2784
2189
2785
# Parsing an RFC 3339 duration with regular expressions is not
2190
2786
# possible - there would have to be multiple places for the same
2191
2787
# values, like seconds. The current code, while more esoteric, is
2192
2788
# cleaner without depending on a parsing library. If Python had a
2193
2789
# built-in library for parsing we would use it, but we'd like to
2194
2790
# avoid excessive use of external libraries.
2195
2791
2196
2792
# New type for defining tokens, syntax, and semantics all-in-one
2197
2793
Token = collections.namedtuple("Token", (
2198
2794
"regexp", # To match token; if "value" is not None, must have
2231
2827
frozenset((token_year, token_month,
2232
2828
token_day, token_time,
2233
2829
token_week)))
2234
# Define starting values
2235
value = datetime.timedelta() # Value so far
2830
# Define starting values:
2831
# Value so far
2832
value = datetime.timedelta()
2236
2833
found_token = None
2237
followers = frozenset((token_duration, )) # Following valid tokens
2238
s = duration # String left to parse
2834
# Following valid tokens
2835
followers = frozenset((token_duration, ))
2836
# String left to parse
2837
s = duration
2239
2838
# Loop until end token is found
2240
2839
while found_token is not token_end:
2241
2840
# Search for any currently valid tokens
2265
2864
2266
2865
def string_to_delta(interval):
2267
2866
"""Parse a string and return a datetime.timedelta
2268
2269
>>> string_to_delta('7d')
2270
datetime.timedelta(7)
2271
>>> string_to_delta('60s')
2272
datetime.timedelta(0, 60)
2273
>>> string_to_delta('60m')
2274
datetime.timedelta(0, 3600)
2275
>>> string_to_delta('24h')
2276
datetime.timedelta(1)
2277
>>> string_to_delta('1w')
2278
datetime.timedelta(7)
2279
>>> string_to_delta('5m 30s')
2280
datetime.timedelta(0, 330)
2867
2868
>>> string_to_delta('7d') == datetime.timedelta(7)
2869
True
2870
>>> string_to_delta('60s') == datetime.timedelta(0, 60)
2871
True
2872
>>> string_to_delta('60m') == datetime.timedelta(0, 3600)
2873
True
2874
>>> string_to_delta('24h') == datetime.timedelta(1)
2875
True
2876
>>> string_to_delta('1w') == datetime.timedelta(7)
2877
True
2878
>>> string_to_delta('5m 30s') == datetime.timedelta(0, 330)
2879
True
2281
2880
"""
2282
2881
2283
2882
try:
2284
2883
return rfc3339_duration_to_delta(interval)
2285
2884
except ValueError:
2286
2885
pass
2287
2886
2288
2887
timevalue = datetime.timedelta(0)
2289
2888
for s in interval.split():
2290
2889
try:
2308
2907
return timevalue
2309
2908
2310
2909
2311
def daemon(nochdir = False, noclose = False):
2910
def daemon(nochdir=False, noclose=False):
2312
2911
"""See daemon(3). Standard BSD Unix function.
2313
2912
2314
2913
This should really exist as os.daemon, but it doesn't (yet)."""
2315
2914
if os.fork():
2316
2915
sys.exit()
2334
2933
2335
2934
2336
2935
def main():
2337
2936
2338
2937
##################################################################
2339
2938
# Parsing of options, both command line and config file
2340
2939
2341
2940
parser = argparse.ArgumentParser()
2342
2941
parser.add_argument("-v", "--version", action="version",
2343
version = "%(prog)s {}".format(version),
2942
version="%(prog)s {}".format(version),
2344
2943
help="show version number and exit")
2345
2944
parser.add_argument("-i", "--interface", metavar="IF",
2346
2945
help="Bind to interface IF")
2382
2981
parser.add_argument("--no-zeroconf", action="store_false",
2383
2982
dest="zeroconf", help="Do not use Zeroconf",
2384
2983
default=None)
2385
2984
2386
2985
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
2986
2393
2987
# 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
2988
if gnutls.has_rawpk:
2989
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
2990
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
2991
else:
2992
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2993
":+SIGN-DSA-SHA256")
2994
server_defaults = {"interface": "",
2995
"address": "",
2996
"port": "",
2997
"debug": "False",
2998
"priority": priority,
2999
"servicename": "Mandos",
3000
"use_dbus": "True",
3001
"use_ipv6": "True",
3002
"debuglevel": "",
3003
"restore": "True",
3004
"socket": "",
3005
"statedir": "/var/lib/mandos",
3006
"foreground": "False",
3007
"zeroconf": "True",
3008
}
3009
del priority
3010
2412
3011
# Parse config file for server-global settings
2413
server_config = configparser.SafeConfigParser(server_defaults)
3012
server_config = configparser.ConfigParser(server_defaults)
2414
3013
del server_defaults
2415
3014
server_config.read(os.path.join(options.configdir, "mandos.conf"))
2416
# Convert the SafeConfigParser object to a dict
3015
# Convert the ConfigParser object to a dict
2417
3016
server_settings = server_config.defaults()
2418
3017
# Use the appropriate methods on the non-string config options
2419
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
3018
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3019
"foreground", "zeroconf"):
2420
3020
server_settings[option] = server_config.getboolean("DEFAULT",
2421
3021
option)
2422
3022
if server_settings["port"]:
2432
3032
server_settings["socket"] = os.dup(server_settings
2433
3033
["socket"])
2434
3034
del server_config
2435
3035
2436
3036
# Override the settings from the config file with command line
2437
3037
# options, if set.
2438
3038
for option in ("interface", "address", "port", "debug",
2456
3056
if server_settings["debug"]:
2457
3057
server_settings["foreground"] = True
2458
3058
# Now we have our good server settings in "server_settings"
2459
3059
2460
3060
##################################################################
2461
3061
2462
3062
if (not server_settings["zeroconf"]
2463
3063
and not (server_settings["port"]
2464
3064
or server_settings["socket"] != "")):
2465
3065
parser.error("Needs port or socket to work without Zeroconf")
2466
3066
2467
3067
# For convenience
2468
3068
debug = server_settings["debug"]
2469
3069
debuglevel = server_settings["debuglevel"]
2473
3073
stored_state_file)
2474
3074
foreground = server_settings["foreground"]
2475
3075
zeroconf = server_settings["zeroconf"]
2476
3076
2477
3077
if debug:
2478
3078
initlogger(debug, logging.DEBUG)
2479
3079
else:
2482
3082
else:
2483
3083
level = getattr(logging, debuglevel.upper())
2484
3084
initlogger(debug, level)
2485
3085
2486
3086
if server_settings["servicename"] != "Mandos":
2487
3087
syslogger.setFormatter(
2488
3088
logging.Formatter('Mandos ({}) [%(process)d]:'
2489
3089
' %(levelname)s: %(message)s'.format(
2490
3090
server_settings["servicename"])))
2491
3091
2492
3092
# Parse config file with clients
2493
client_config = configparser.SafeConfigParser(Client
2494
.client_defaults)
3093
client_config = configparser.ConfigParser(Client.client_defaults)
2495
3094
client_config.read(os.path.join(server_settings["configdir"],
2496
3095
"clients.conf"))
2497
3096
2498
3097
global mandos_dbus_service
2499
3098
mandos_dbus_service = None
2500
3099
2501
3100
socketfd = None
2502
3101
if server_settings["socket"] != "":
2503
3102
socketfd = server_settings["socket"]
2519
3118
except IOError as e:
2520
3119
logger.error("Could not open file %r", pidfilename,
2521
3120
exc_info=e)
2522
2523
for name in ("_mandos", "mandos", "nobody"):
3121
3122
for name, group in (("_mandos", "_mandos"),
3123
("mandos", "mandos"),
3124
("nobody", "nogroup")):
2524
3125
try:
2525
3126
uid = pwd.getpwnam(name).pw_uid
2526
gid = pwd.getpwnam(name).pw_gid
3127
gid = pwd.getpwnam(group).pw_gid
2527
3128
break
2528
3129
except KeyError:
2529
3130
continue
2533
3134
try:
2534
3135
os.setgid(gid)
2535
3136
os.setuid(uid)
3137
if debug:
3138
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3139
gid))
2536
3140
except OSError as error:
3141
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3142
.format(uid, gid, os.strerror(error.errno)))
2537
3143
if error.errno != errno.EPERM:
2538
3144
raise
2539
3145
2540
3146
if debug:
2541
3147
# Enable all possible GnuTLS debugging
2542
3148
2543
3149
# "Use a log level over 10 to enable all debugging options."
2544
3150
# - GnuTLS manual
2545
gnutls.library.functions.gnutls_global_set_log_level(11)
2546
2547
@gnutls.library.types.gnutls_log_func
3151
gnutls.global_set_log_level(11)
3152
3153
@gnutls.log_func
2548
3154
def debug_gnutls(level, string):
2549
3155
logger.debug("GnuTLS: %s", string[:-1])
2550
2551
gnutls.library.functions.gnutls_global_set_log_function(
2552
debug_gnutls)
2553
3156
3157
gnutls.global_set_log_function(debug_gnutls)
3158
2554
3159
# Redirect stdin so all checkers get /dev/null
2555
3160
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2556
3161
os.dup2(null, sys.stdin.fileno())
2557
3162
if null > 2:
2558
3163
os.close(null)
2559
3164
2560
3165
# Need to fork before connecting to D-Bus
2561
3166
if not foreground:
2562
3167
# Close all input and output, do double fork, etc.
2563
3168
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
3169
3170
if gi.version_info < (3, 10, 2):
3171
# multiprocessing will use threads, so before we use GLib we
3172
# need to inform GLib that threads will be used.
3173
GLib.threads_init()
3174
2569
3175
global main_loop
2570
3176
# From the Avahi example code
2571
3177
DBusGMainLoop(set_as_default=True)
2572
main_loop = gobject.MainLoop()
3178
main_loop = GLib.MainLoop()
2573
3179
bus = dbus.SystemBus()
2574
3180
# End of Avahi example code
2575
3181
if use_dbus:
2588
3194
if zeroconf:
2589
3195
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2590
3196
service = AvahiServiceToSyslog(
2591
name = server_settings["servicename"],
2592
servicetype = "_mandos._tcp",
2593
protocol = protocol,
2594
bus = bus)
3197
name=server_settings["servicename"],
3198
servicetype="_mandos._tcp",
3199
protocol=protocol,
3200
bus=bus)
2595
3201
if server_settings["interface"]:
2596
3202
service.interface = if_nametoindex(
2597
3203
server_settings["interface"].encode("utf-8"))
2598
3204
2599
3205
global multiprocessing_manager
2600
3206
multiprocessing_manager = multiprocessing.Manager()
2601
3207
2602
3208
client_class = Client
2603
3209
if use_dbus:
2604
client_class = functools.partial(ClientDBus, bus = bus)
2605
3210
client_class = functools.partial(ClientDBus, bus=bus)
3211
2606
3212
client_settings = Client.config_parser(client_config)
2607
3213
old_client_settings = {}
2608
3214
clients_data = {}
2609
3215
2610
3216
# This is used to redirect stdout and stderr for checker processes
2611
3217
global wnull
2612
wnull = open(os.devnull, "w") # A writable /dev/null
3218
wnull = open(os.devnull, "w") # A writable /dev/null
2613
3219
# Only used if server is running in foreground but not in debug
2614
3220
# mode
2615
3221
if debug or not foreground:
2616
3222
wnull.close()
2617
3223
2618
3224
# Get client data and settings from last running state.
2619
3225
if server_settings["restore"]:
2620
3226
try:
2621
3227
with open(stored_state_path, "rb") as stored_state:
2622
clients_data, old_client_settings = pickle.load(
2623
stored_state)
3228
if sys.version_info.major == 2:
3229
clients_data, old_client_settings = pickle.load(
3230
stored_state)
3231
else:
3232
bytes_clients_data, bytes_old_client_settings = (
3233
pickle.load(stored_state, encoding="bytes"))
3234
# Fix bytes to strings
3235
# clients_data
3236
# .keys()
3237
clients_data = {(key.decode("utf-8")
3238
if isinstance(key, bytes)
3239
else key): value
3240
for key, value in
3241
bytes_clients_data.items()}
3242
del bytes_clients_data
3243
for key in clients_data:
3244
value = {(k.decode("utf-8")
3245
if isinstance(k, bytes) else k): v
3246
for k, v in
3247
clients_data[key].items()}
3248
clients_data[key] = value
3249
# .client_structure
3250
value["client_structure"] = [
3251
(s.decode("utf-8")
3252
if isinstance(s, bytes)
3253
else s) for s in
3254
value["client_structure"]]
3255
# .name, .host, and .checker_command
3256
for k in ("name", "host", "checker_command"):
3257
if isinstance(value[k], bytes):
3258
value[k] = value[k].decode("utf-8")
3259
if "key_id" not in value:
3260
value["key_id"] = ""
3261
elif "fingerprint" not in value:
3262
value["fingerprint"] = ""
3263
# old_client_settings
3264
# .keys()
3265
old_client_settings = {
3266
(key.decode("utf-8")
3267
if isinstance(key, bytes)
3268
else key): value
3269
for key, value in
3270
bytes_old_client_settings.items()}
3271
del bytes_old_client_settings
3272
# .host and .checker_command
3273
for value in old_client_settings.values():
3274
for attribute in ("host", "checker_command"):
3275
if isinstance(value[attribute], bytes):
3276
value[attribute] = (value[attribute]
3277
.decode("utf-8"))
2624
3278
os.remove(stored_state_path)
2625
3279
except IOError as e:
2626
3280
if e.errno == errno.ENOENT:
2634
3288
logger.warning("Could not load persistent state: "
2635
3289
"EOFError:",
2636
3290
exc_info=e)
2637
3291
2638
3292
with PGPEngine() as pgp:
2639
3293
for client_name, client in clients_data.items():
2640
3294
# Skip removed clients
2641
3295
if client_name not in client_settings:
2642
3296
continue
2643
3297
2644
3298
# Decide which value to use after restoring saved state.
2645
3299
# We have three different values: Old config file,
2646
3300
# new config file, and saved state.
2657
3311
client[name] = value
2658
3312
except KeyError:
2659
3313
pass
2660
3314
2661
3315
# Clients who has passed its expire date can still be
2662
3316
# enabled if its last checker was successful. A Client
2663
3317
# whose checker succeeded before we stored its state is
2696
3350
client_name))
2697
3351
client["secret"] = (client_settings[client_name]
2698
3352
["secret"])
2699
3353
2700
3354
# Add/remove clients based on new changes made to config
2701
3355
for client_name in (set(old_client_settings)
2702
3356
- set(client_settings)):
2704
3358
for client_name in (set(client_settings)
2705
3359
- set(old_client_settings)):
2706
3360
clients_data[client_name] = client_settings[client_name]
2707
3361
2708
3362
# Create all client objects
2709
3363
for client_name, client in clients_data.items():
2710
3364
tcp_server.clients[client_name] = client_class(
2711
name = client_name,
2712
settings = client,
2713
server_settings = server_settings)
2714
3365
name=client_name,
3366
settings=client,
3367
server_settings=server_settings)
3368
2715
3369
if not tcp_server.clients:
2716
3370
logger.warning("No clients defined")
2717
3371
2718
3372
if not foreground:
2719
3373
if pidfile is not None:
2720
3374
pid = os.getpid()
2726
3380
pidfilename, pid)
2727
3381
del pidfile
2728
3382
del pidfilename
2729
2730
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2731
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2732
3383
3384
for termsig in (signal.SIGHUP, signal.SIGTERM):
3385
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3386
lambda: main_loop.quit() and False)
3387
2733
3388
if use_dbus:
2734
3389
2735
3390
@alternate_dbus_interfaces(
2736
{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
2737
class MandosDBusService(DBusObjectWithProperties):
3391
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3392
class MandosDBusService(DBusObjectWithObjectManager):
2738
3393
"""A D-Bus proxy object"""
2739
3394
2740
3395
def __init__(self):
2741
3396
dbus.service.Object.__init__(self, bus, "/")
2742
3397
2743
3398
_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
3399
2751
3400
@dbus.service.signal(_interface, signature="o")
2752
3401
def ClientAdded(self, objpath):
2753
3402
"D-Bus signal"
2754
3403
pass
2755
3404
2756
3405
@dbus.service.signal(_interface, signature="ss")
2757
def ClientNotFound(self, fingerprint, address):
3406
def ClientNotFound(self, key_id, address):
2758
3407
"D-Bus signal"
2759
3408
pass
2760
3409
3410
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3411
"true"})
2761
3412
@dbus.service.signal(_interface, signature="os")
2762
3413
def ClientRemoved(self, objpath, name):
2763
3414
"D-Bus signal"
2764
3415
pass
2765
3416
3417
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3418
"true"})
2766
3419
@dbus.service.method(_interface, out_signature="ao")
2767
3420
def GetAllClients(self):
2768
3421
"D-Bus method"
2769
3422
return dbus.Array(c.dbus_object_path for c in
2770
tcp_server.clients.itervalues())
2771
3423
tcp_server.clients.values())
3424
3425
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3426
"true"})
2772
3427
@dbus.service.method(_interface,
2773
3428
out_signature="a{oa{sv}}")
2774
3429
def GetAllClientsWithProperties(self):
2775
3430
"D-Bus method"
2776
3431
return dbus.Dictionary(
2777
{ c.dbus_object_path: c.GetAll("")
2778
for c in tcp_server.clients.itervalues() },
3432
{c.dbus_object_path: c.GetAll(
3433
"se.recompile.Mandos.Client")
3434
for c in tcp_server.clients.values()},
2779
3435
signature="oa{sv}")
2780
3436
2781
3437
@dbus.service.method(_interface, in_signature="o")
2782
3438
def RemoveClient(self, object_path):
2783
3439
"D-Bus method"
2784
for c in tcp_server.clients.itervalues():
3440
for c in tcp_server.clients.values():
2785
3441
if c.dbus_object_path == object_path:
2786
3442
del tcp_server.clients[c.name]
2787
3443
c.remove_from_connection()
2788
# Don't signal anything except ClientRemoved
3444
# Don't signal the disabling
2789
3445
c.disable(quiet=True)
2790
# Emit D-Bus signal
2791
self.ClientRemoved(object_path, c.name)
3446
# Emit D-Bus signal for removal
3447
self.client_removed_signal(c)
2792
3448
return
2793
3449
raise KeyError(object_path)
2794
3450
2795
3451
del _interface
2796
3452
3453
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3454
out_signature="a{oa{sa{sv}}}")
3455
def GetManagedObjects(self):
3456
"""D-Bus method"""
3457
return dbus.Dictionary(
3458
{client.dbus_object_path:
3459
dbus.Dictionary(
3460
{interface: client.GetAll(interface)
3461
for interface in
3462
client._get_all_interface_names()})
3463
for client in tcp_server.clients.values()})
3464
3465
def client_added_signal(self, client):
3466
"""Send the new standard signal and the old signal"""
3467
if use_dbus:
3468
# New standard signal
3469
self.InterfacesAdded(
3470
client.dbus_object_path,
3471
dbus.Dictionary(
3472
{interface: client.GetAll(interface)
3473
for interface in
3474
client._get_all_interface_names()}))
3475
# Old signal
3476
self.ClientAdded(client.dbus_object_path)
3477
3478
def client_removed_signal(self, client):
3479
"""Send the new standard signal and the old signal"""
3480
if use_dbus:
3481
# New standard signal
3482
self.InterfacesRemoved(
3483
client.dbus_object_path,
3484
client._get_all_interface_names())
3485
# Old signal
3486
self.ClientRemoved(client.dbus_object_path,
3487
client.name)
3488
2797
3489
mandos_dbus_service = MandosDBusService()
2798
3490
3491
# Save modules to variables to exempt the modules from being
3492
# unloaded before the function registered with atexit() is run.
3493
mp = multiprocessing
3494
wn = wnull
3495
2799
3496
def cleanup():
2800
3497
"Cleanup function; run on exit"
2801
3498
if zeroconf:
2802
3499
service.cleanup()
2803
2804
multiprocessing.active_children()
2805
wnull.close()
3500
3501
mp.active_children()
3502
wn.close()
2806
3503
if not (tcp_server.clients or client_settings):
2807
3504
return
2808
3505
2809
3506
# Store client before exiting. Secrets are encrypted with key
2810
3507
# based on what config file has. If config file is
2811
3508
# removed/edited, old secret will thus be unrecovable.
2812
3509
clients = {}
2813
3510
with PGPEngine() as pgp:
2814
for client in tcp_server.clients.itervalues():
3511
for client in tcp_server.clients.values():
2815
3512
key = client_settings[client.name]["secret"]
2816
3513
client.encrypted_secret = pgp.encrypt(client.secret,
2817
3514
key)
2818
3515
client_dict = {}
2819
3516
2820
3517
# A list of attributes that can not be pickled
2821
3518
# + secret.
2822
exclude = { "bus", "changedstate", "secret",
2823
"checker", "server_settings" }
3519
exclude = {"bus", "changedstate", "secret",
3520
"checker", "server_settings"}
2824
3521
for name, typ in inspect.getmembers(dbus.service
2825
3522
.Object):
2826
3523
exclude.add(name)
2827
3524
2828
3525
client_dict["encrypted_secret"] = (client
2829
3526
.encrypted_secret)
2830
3527
for attr in client.client_structure:
2831
3528
if attr not in exclude:
2832
3529
client_dict[attr] = getattr(client, attr)
2833
3530
2834
3531
clients[client.name] = client_dict
2835
3532
del client_settings[client.name]["secret"]
2836
3533
2837
3534
try:
2838
3535
with tempfile.NamedTemporaryFile(
2839
3536
mode='wb',
2841
3538
prefix='clients-',
2842
3539
dir=os.path.dirname(stored_state_path),
2843
3540
delete=False) as stored_state:
2844
pickle.dump((clients, client_settings), stored_state)
3541
pickle.dump((clients, client_settings), stored_state,
3542
protocol=2)
2845
3543
tempname = stored_state.name
2846
3544
os.rename(tempname, stored_state_path)
2847
3545
except (IOError, OSError) as e:
2857
3555
logger.warning("Could not save persistent state:",
2858
3556
exc_info=e)
2859
3557
raise
2860
3558
2861
3559
# Delete all clients, and settings from config
2862
3560
while tcp_server.clients:
2863
3561
name, client = tcp_server.clients.popitem()
2864
3562
if use_dbus:
2865
3563
client.remove_from_connection()
2866
# Don't signal anything except ClientRemoved
3564
# Don't signal the disabling
2867
3565
client.disable(quiet=True)
3566
# Emit D-Bus signal for removal
2868
3567
if use_dbus:
2869
# Emit D-Bus signal
2870
mandos_dbus_service.ClientRemoved(
2871
client.dbus_object_path, client.name)
3568
mandos_dbus_service.client_removed_signal(client)
2872
3569
client_settings.clear()
2873
3570
2874
3571
atexit.register(cleanup)
2875
2876
for client in tcp_server.clients.itervalues():
3572
3573
for client in tcp_server.clients.values():
2877
3574
if use_dbus:
2878
# Emit D-Bus signal
2879
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3575
# Emit D-Bus signal for adding
3576
mandos_dbus_service.client_added_signal(client)
2880
3577
# Need to initiate checking of clients
2881
3578
if client.enabled:
2882
3579
client.init_checker()
2883
3580
2884
3581
tcp_server.enable()
2885
3582
tcp_server.server_activate()
2886
3583
2887
3584
# Find out what port we got
2888
3585
if zeroconf:
2889
3586
service.port = tcp_server.socket.getsockname()[1]
2894
3591
else: # IPv4
2895
3592
logger.info("Now listening on address %r, port %d",
2896
3593
*tcp_server.socket.getsockname())
2897
2898
#service.interface = tcp_server.socket.getsockname()[3]
2899
3594
3595
# service.interface = tcp_server.socket.getsockname()[3]
3596
2900
3597
try:
2901
3598
if zeroconf:
2902
3599
# From the Avahi example code
2907
3604
cleanup()
2908
3605
sys.exit(1)
2909
3606
# 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
3607
3608
GLib.io_add_watch(
3609
GLib.IOChannel.unix_new(tcp_server.fileno()),
3610
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
3611
lambda *args, **kwargs: (tcp_server.handle_request
3612
(*args[2:], **kwargs) or True))
3613
2916
3614
logger.debug("Starting main loop")
2917
3615
main_loop.run()
2918
3616
except AvahiError as error:
2927
3625
# Must run before the D-Bus bus name gets deregistered
2928
3626
cleanup()
2929
3627
3628
3629
def should_only_run_tests():
3630
parser = argparse.ArgumentParser(add_help=False)
3631
parser.add_argument("--check", action='store_true')
3632
args, unknown_args = parser.parse_known_args()
3633
run_tests = args.check
3634
if run_tests:
3635
# Remove --check argument from sys.argv
3636
sys.argv[1:] = unknown_args
3637
return run_tests
3638
3639
# Add all tests from doctest strings
3640
def load_tests(loader, tests, none):
3641
import doctest
3642
tests.addTests(doctest.DocTestSuite())
3643
return tests
2930
3644
2931
3645
if __name__ == '__main__':
2932
main()
3646
try:
3647
if should_only_run_tests():
3648
# Call using ./mandos --check [--verbose]
3649
unittest.main()
3650
else:
3651
main()
3652
finally:
3653
logging.shutdown()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0