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- Committer: Teddy Hogeborn
- Date: 2016-02-21 14:24:01 UTC
- Revision ID: teddy@recompile.se-20160221142401-j7glu6a2hg604d1e
Use AddressSanitizer and UndefinedBehaviorSanitizer.
* Makefile (SANITIZE): New; set to all sanitizing options depending on
GCC version.
(CFLAGS): Added "$(SANITIZE)".
* Makefile (SANITIZE): New; set to all sanitizing options depending on
GCC version.
(CFLAGS): Added "$(SANITIZE)".
- files added:
- initramfs-tools-hook-conf
- files removed:
- bugs.xml
- debian/tests
- dracut-module
- files modified:
- .bzrignore
added
removed
mandos
1
#!/usr/bin/python3 -bI
2
# -*- mode: python; after-save-hook: (lambda () (let ((command (if (fboundp 'file-local-name) (file-local-name (buffer-file-name)) (or (file-remote-p (buffer-file-name) 'localname) (buffer-file-name))))) (if (= (progn (if (get-buffer "*Test*") (kill-buffer "*Test*")) (process-file-shell-command (format "%s --check" (shell-quote-argument command)) nil "*Test*")) 0) (let ((w (get-buffer-window "*Test*"))) (if w (delete-window w))) (progn (with-current-buffer "*Test*" (compilation-mode)) (display-buffer "*Test*" '(display-buffer-in-side-window)))))); coding: utf-8 -*-
3
#
1
#!/usr/bin/python2.7
2
# -*- mode: python; coding: utf-8 -*-
3
#
4
4
# Mandos server - give out binary blobs to connecting clients.
5
#
5
#
6
6
# This program is partly derived from an example program for an Avahi
7
7
# service publisher, downloaded from
8
8
# <http://avahi.org/wiki/PythonPublishExample>. This includes the
9
9
# methods "add", "remove", "server_state_changed",
10
10
# "entry_group_state_changed", "cleanup", and "activate" in the
11
11
# "AvahiService" class, and some lines in "main".
12
#
12
#
13
13
# Everything else is
14
# Copyright © 2008-2019 Teddy Hogeborn
15
# Copyright © 2008-2019 Björn Påhlsson
16
#
17
# This file is part of Mandos.
18
#
19
# Mandos is free software: you can redistribute it and/or modify it
20
# under the terms of the GNU General Public License as published by
14
# Copyright © 2008-2015 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
21
19
# the Free Software Foundation, either version 3 of the License, or
22
20
# (at your option) any later version.
23
21
#
24
# Mandos is distributed in the hope that it will be useful, but
25
# WITHOUT ANY WARRANTY; without even the implied warranty of
22
# This program is distributed in the hope that it will be useful,
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
26
24
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
27
25
# GNU General Public License for more details.
28
#
26
#
29
27
# You should have received a copy of the GNU General Public License
30
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
31
#
28
# along with this program. If not, see
29
# <http://www.gnu.org/licenses/>.
30
#
32
31
# Contact the authors at <mandos@recompile.se>.
33
#
32
#
34
33
35
34
from __future__ import (division, absolute_import, print_function,
36
35
unicode_literals)
37
36
38
try:
39
from future_builtins import *
40
except ImportError:
41
pass
37
from future_builtins import *
42
38
43
39
try:
44
40
import SocketServer as socketserver
48
44
import argparse
49
45
import datetime
50
46
import errno
47
import gnutls.connection
48
import gnutls.errors
49
import gnutls.library.functions
50
import gnutls.library.constants
51
import gnutls.library.types
51
52
try:
52
53
import ConfigParser as configparser
53
54
except ImportError:
77
78
import itertools
78
79
import collections
79
80
import codecs
80
import unittest
81
81
82
82
import dbus
83
83
import dbus.service
84
import gi
85
from gi.repository import GLib
84
try:
85
import gobject
86
except ImportError:
87
from gi.repository import GObject as gobject
88
import avahi
86
89
from dbus.mainloop.glib import DBusGMainLoop
87
90
import ctypes
88
91
import ctypes.util
89
92
import xml.dom.minidom
90
93
import inspect
91
94
92
if sys.version_info.major == 2:
93
__metaclass__ = type
94
str = unicode
95
96
# Show warnings by default
97
if not sys.warnoptions:
98
import warnings
99
warnings.simplefilter("default")
100
101
# Try to find the value of SO_BINDTODEVICE:
102
95
try:
103
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
104
# newer, and it is also the most natural place for it:
105
96
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
106
97
except AttributeError:
107
98
try:
108
# This is where SO_BINDTODEVICE was up to and including Python
109
# 2.6, and also 3.2:
110
99
from IN import SO_BINDTODEVICE
111
100
except ImportError:
112
# In Python 2.7 it seems to have been removed entirely.
113
# Try running the C preprocessor:
114
try:
115
cc = subprocess.Popen(["cc", "--language=c", "-E",
116
"/dev/stdin"],
117
stdin=subprocess.PIPE,
118
stdout=subprocess.PIPE)
119
stdout = cc.communicate(
120
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
121
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
122
except (OSError, ValueError, IndexError):
123
# No value found
124
SO_BINDTODEVICE = None
125
126
if sys.version_info < (3, 2):
127
configparser.Configparser = configparser.SafeConfigParser
128
129
version = "1.8.9"
101
SO_BINDTODEVICE = None
102
103
if sys.version_info.major == 2:
104
str = unicode
105
106
version = "1.7.1"
130
107
stored_state_file = "clients.pickle"
131
108
132
109
logger = logging.getLogger()
133
logging.captureWarnings(True) # Show warnings via the logging system
134
110
syslogger = None
135
111
136
112
try:
137
113
if_nametoindex = ctypes.cdll.LoadLibrary(
138
114
ctypes.util.find_library("c")).if_nametoindex
139
115
except (OSError, AttributeError):
140
116
141
117
def if_nametoindex(interface):
142
118
"Get an interface index the hard way, i.e. using fcntl()"
143
119
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
148
124
return interface_index
149
125
150
126
151
def copy_function(func):
152
"""Make a copy of a function"""
153
if sys.version_info.major == 2:
154
return types.FunctionType(func.func_code,
155
func.func_globals,
156
func.func_name,
157
func.func_defaults,
158
func.func_closure)
159
else:
160
return types.FunctionType(func.__code__,
161
func.__globals__,
162
func.__name__,
163
func.__defaults__,
164
func.__closure__)
165
166
167
127
def initlogger(debug, level=logging.WARNING):
168
128
"""init logger and add loglevel"""
169
129
170
130
global syslogger
171
131
syslogger = (logging.handlers.SysLogHandler(
172
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
173
address="/dev/log"))
132
facility = logging.handlers.SysLogHandler.LOG_DAEMON,
133
address = "/dev/log"))
174
134
syslogger.setFormatter(logging.Formatter
175
135
('Mandos [%(process)d]: %(levelname)s:'
176
136
' %(message)s'))
177
137
logger.addHandler(syslogger)
178
138
179
139
if debug:
180
140
console = logging.StreamHandler()
181
141
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
191
151
pass
192
152
193
153
194
class PGPEngine:
154
class PGPEngine(object):
195
155
"""A simple class for OpenPGP symmetric encryption & decryption"""
196
156
197
157
def __init__(self):
198
158
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
199
self.gpg = "gpg"
200
try:
201
output = subprocess.check_output(["gpgconf"])
202
for line in output.splitlines():
203
name, text, path = line.split(b":")
204
if name == b"gpg":
205
self.gpg = path
206
break
207
except OSError as e:
208
if e.errno != errno.ENOENT:
209
raise
210
159
self.gnupgargs = ['--batch',
211
'--homedir', self.tempdir,
160
'--home', self.tempdir,
212
161
'--force-mdc',
213
'--quiet']
214
# Only GPG version 1 has the --no-use-agent option.
215
if self.gpg == b"gpg" or self.gpg.endswith(b"/gpg"):
216
self.gnupgargs.append("--no-use-agent")
217
162
'--quiet',
163
'--no-use-agent']
164
218
165
def __enter__(self):
219
166
return self
220
167
221
168
def __exit__(self, exc_type, exc_value, traceback):
222
169
self._cleanup()
223
170
return False
224
171
225
172
def __del__(self):
226
173
self._cleanup()
227
174
228
175
def _cleanup(self):
229
176
if self.tempdir is not None:
230
177
# Delete contents of tempdir
231
178
for root, dirs, files in os.walk(self.tempdir,
232
topdown=False):
179
topdown = False):
233
180
for filename in files:
234
181
os.remove(os.path.join(root, filename))
235
182
for dirname in dirs:
237
184
# Remove tempdir
238
185
os.rmdir(self.tempdir)
239
186
self.tempdir = None
240
187
241
188
def password_encode(self, password):
242
189
# Passphrase can not be empty and can not contain newlines or
243
190
# NUL bytes. So we prefix it and hex encode it.
248
195
.replace(b"\n", b"\\n")
249
196
.replace(b"\0", b"\\x00"))
250
197
return encoded
251
198
252
199
def encrypt(self, data, password):
253
200
passphrase = self.password_encode(password)
254
201
with tempfile.NamedTemporaryFile(
255
202
dir=self.tempdir) as passfile:
256
203
passfile.write(passphrase)
257
204
passfile.flush()
258
proc = subprocess.Popen([self.gpg, '--symmetric',
205
proc = subprocess.Popen(['gpg', '--symmetric',
259
206
'--passphrase-file',
260
207
passfile.name]
261
208
+ self.gnupgargs,
262
stdin=subprocess.PIPE,
263
stdout=subprocess.PIPE,
264
stderr=subprocess.PIPE)
265
ciphertext, err = proc.communicate(input=data)
209
stdin = subprocess.PIPE,
210
stdout = subprocess.PIPE,
211
stderr = subprocess.PIPE)
212
ciphertext, err = proc.communicate(input = data)
266
213
if proc.returncode != 0:
267
214
raise PGPError(err)
268
215
return ciphertext
269
216
270
217
def decrypt(self, data, password):
271
218
passphrase = self.password_encode(password)
272
219
with tempfile.NamedTemporaryFile(
273
dir=self.tempdir) as passfile:
220
dir = self.tempdir) as passfile:
274
221
passfile.write(passphrase)
275
222
passfile.flush()
276
proc = subprocess.Popen([self.gpg, '--decrypt',
223
proc = subprocess.Popen(['gpg', '--decrypt',
277
224
'--passphrase-file',
278
225
passfile.name]
279
226
+ self.gnupgargs,
280
stdin=subprocess.PIPE,
281
stdout=subprocess.PIPE,
282
stderr=subprocess.PIPE)
283
decrypted_plaintext, err = proc.communicate(input=data)
227
stdin = subprocess.PIPE,
228
stdout = subprocess.PIPE,
229
stderr = subprocess.PIPE)
230
decrypted_plaintext, err = proc.communicate(input = data)
284
231
if proc.returncode != 0:
285
232
raise PGPError(err)
286
233
return decrypted_plaintext
287
234
288
235
289
# Pretend that we have an Avahi module
290
class avahi:
291
"""This isn't so much a class as it is a module-like namespace."""
292
IF_UNSPEC = -1 # avahi-common/address.h
293
PROTO_UNSPEC = -1 # avahi-common/address.h
294
PROTO_INET = 0 # avahi-common/address.h
295
PROTO_INET6 = 1 # avahi-common/address.h
296
DBUS_NAME = "org.freedesktop.Avahi"
297
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
298
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
299
DBUS_PATH_SERVER = "/"
300
301
@staticmethod
302
def string_array_to_txt_array(t):
303
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
304
for s in t), signature="ay")
305
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
306
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
307
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
308
SERVER_INVALID = 0 # avahi-common/defs.h
309
SERVER_REGISTERING = 1 # avahi-common/defs.h
310
SERVER_RUNNING = 2 # avahi-common/defs.h
311
SERVER_COLLISION = 3 # avahi-common/defs.h
312
SERVER_FAILURE = 4 # avahi-common/defs.h
313
314
315
236
class AvahiError(Exception):
316
237
def __init__(self, value, *args, **kwargs):
317
238
self.value = value
327
248
pass
328
249
329
250
330
class AvahiService:
251
class AvahiService(object):
331
252
"""An Avahi (Zeroconf) service.
332
253
333
254
Attributes:
334
255
interface: integer; avahi.IF_UNSPEC or an interface index.
335
256
Used to optionally bind to the specified interface.
347
268
server: D-Bus Server
348
269
bus: dbus.SystemBus()
349
270
"""
350
271
351
272
def __init__(self,
352
interface=avahi.IF_UNSPEC,
353
name=None,
354
servicetype=None,
355
port=None,
356
TXT=None,
357
domain="",
358
host="",
359
max_renames=32768,
360
protocol=avahi.PROTO_UNSPEC,
361
bus=None):
273
interface = avahi.IF_UNSPEC,
274
name = None,
275
servicetype = None,
276
port = None,
277
TXT = None,
278
domain = "",
279
host = "",
280
max_renames = 32768,
281
protocol = avahi.PROTO_UNSPEC,
282
bus = None):
362
283
self.interface = interface
363
284
self.name = name
364
285
self.type = servicetype
373
294
self.server = None
374
295
self.bus = bus
375
296
self.entry_group_state_changed_match = None
376
297
377
298
def rename(self, remove=True):
378
299
"""Derived from the Avahi example code"""
379
300
if self.rename_count >= self.max_renames:
399
320
logger.critical("D-Bus Exception", exc_info=error)
400
321
self.cleanup()
401
322
os._exit(1)
402
323
403
324
def remove(self):
404
325
"""Derived from the Avahi example code"""
405
326
if self.entry_group_state_changed_match is not None:
407
328
self.entry_group_state_changed_match = None
408
329
if self.group is not None:
409
330
self.group.Reset()
410
331
411
332
def add(self):
412
333
"""Derived from the Avahi example code"""
413
334
self.remove()
430
351
dbus.UInt16(self.port),
431
352
avahi.string_array_to_txt_array(self.TXT))
432
353
self.group.Commit()
433
354
434
355
def entry_group_state_changed(self, state, error):
435
356
"""Derived from the Avahi example code"""
436
357
logger.debug("Avahi entry group state change: %i", state)
437
358
438
359
if state == avahi.ENTRY_GROUP_ESTABLISHED:
439
360
logger.debug("Zeroconf service established.")
440
361
elif state == avahi.ENTRY_GROUP_COLLISION:
444
365
logger.critical("Avahi: Error in group state changed %s",
445
366
str(error))
446
367
raise AvahiGroupError("State changed: {!s}".format(error))
447
368
448
369
def cleanup(self):
449
370
"""Derived from the Avahi example code"""
450
371
if self.group is not None:
455
376
pass
456
377
self.group = None
457
378
self.remove()
458
379
459
380
def server_state_changed(self, state, error=None):
460
381
"""Derived from the Avahi example code"""
461
382
logger.debug("Avahi server state change: %i", state)
490
411
logger.debug("Unknown state: %r", state)
491
412
else:
492
413
logger.debug("Unknown state: %r: %r", state, error)
493
414
494
415
def activate(self):
495
416
"""Derived from the Avahi example code"""
496
417
if self.server is None:
507
428
class AvahiServiceToSyslog(AvahiService):
508
429
def rename(self, *args, **kwargs):
509
430
"""Add the new name to the syslog messages"""
510
ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
431
ret = AvahiService.rename(self, *args, **kwargs)
511
432
syslogger.setFormatter(logging.Formatter(
512
433
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
513
434
.format(self.name)))
514
435
return ret
515
436
516
517
# Pretend that we have a GnuTLS module
518
class gnutls:
519
"""This isn't so much a class as it is a module-like namespace."""
520
521
library = ctypes.util.find_library("gnutls")
522
if library is None:
523
library = ctypes.util.find_library("gnutls-deb0")
524
_library = ctypes.cdll.LoadLibrary(library)
525
del library
526
527
# Unless otherwise indicated, the constants and types below are
528
# all from the gnutls/gnutls.h C header file.
529
530
# Constants
531
E_SUCCESS = 0
532
E_INTERRUPTED = -52
533
E_AGAIN = -28
534
CRT_OPENPGP = 2
535
CRT_RAWPK = 3
536
CLIENT = 2
537
SHUT_RDWR = 0
538
CRD_CERTIFICATE = 1
539
E_NO_CERTIFICATE_FOUND = -49
540
X509_FMT_DER = 0
541
NO_TICKETS = 1<<10
542
ENABLE_RAWPK = 1<<18
543
CTYPE_PEERS = 3
544
KEYID_USE_SHA256 = 1 # gnutls/x509.h
545
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
546
547
# Types
548
class session_int(ctypes.Structure):
549
_fields_ = []
550
session_t = ctypes.POINTER(session_int)
551
552
class certificate_credentials_st(ctypes.Structure):
553
_fields_ = []
554
certificate_credentials_t = ctypes.POINTER(
555
certificate_credentials_st)
556
certificate_type_t = ctypes.c_int
557
558
class datum_t(ctypes.Structure):
559
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
560
('size', ctypes.c_uint)]
561
562
class openpgp_crt_int(ctypes.Structure):
563
_fields_ = []
564
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
565
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
566
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
567
credentials_type_t = ctypes.c_int
568
transport_ptr_t = ctypes.c_void_p
569
close_request_t = ctypes.c_int
570
571
# Exceptions
572
class Error(Exception):
573
def __init__(self, message=None, code=None, args=()):
574
# Default usage is by a message string, but if a return
575
# code is passed, convert it to a string with
576
# gnutls.strerror()
577
self.code = code
578
if message is None and code is not None:
579
message = gnutls.strerror(code)
580
return super(gnutls.Error, self).__init__(
581
message, *args)
582
583
class CertificateSecurityError(Error):
584
pass
585
586
# Classes
587
class Credentials:
588
def __init__(self):
589
self._c_object = gnutls.certificate_credentials_t()
590
gnutls.certificate_allocate_credentials(
591
ctypes.byref(self._c_object))
592
self.type = gnutls.CRD_CERTIFICATE
593
594
def __del__(self):
595
gnutls.certificate_free_credentials(self._c_object)
596
597
class ClientSession:
598
def __init__(self, socket, credentials=None):
599
self._c_object = gnutls.session_t()
600
gnutls_flags = gnutls.CLIENT
601
if gnutls.check_version(b"3.5.6"):
602
gnutls_flags |= gnutls.NO_TICKETS
603
if gnutls.has_rawpk:
604
gnutls_flags |= gnutls.ENABLE_RAWPK
605
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
606
del gnutls_flags
607
gnutls.set_default_priority(self._c_object)
608
gnutls.transport_set_ptr(self._c_object, socket.fileno())
609
gnutls.handshake_set_private_extensions(self._c_object,
610
True)
611
self.socket = socket
612
if credentials is None:
613
credentials = gnutls.Credentials()
614
gnutls.credentials_set(self._c_object, credentials.type,
615
ctypes.cast(credentials._c_object,
616
ctypes.c_void_p))
617
self.credentials = credentials
618
619
def __del__(self):
620
gnutls.deinit(self._c_object)
621
622
def handshake(self):
623
return gnutls.handshake(self._c_object)
624
625
def send(self, data):
626
data = bytes(data)
627
data_len = len(data)
628
while data_len > 0:
629
data_len -= gnutls.record_send(self._c_object,
630
data[-data_len:],
631
data_len)
632
633
def bye(self):
634
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
635
636
# Error handling functions
637
def _error_code(result):
638
"""A function to raise exceptions on errors, suitable
639
for the 'restype' attribute on ctypes functions"""
640
if result >= 0:
641
return result
642
if result == gnutls.E_NO_CERTIFICATE_FOUND:
643
raise gnutls.CertificateSecurityError(code=result)
644
raise gnutls.Error(code=result)
645
646
def _retry_on_error(result, func, arguments):
647
"""A function to retry on some errors, suitable
648
for the 'errcheck' attribute on ctypes functions"""
649
while result < 0:
650
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
651
return _error_code(result)
652
result = func(*arguments)
653
return result
654
655
# Unless otherwise indicated, the function declarations below are
656
# all from the gnutls/gnutls.h C header file.
657
658
# Functions
659
priority_set_direct = _library.gnutls_priority_set_direct
660
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
661
ctypes.POINTER(ctypes.c_char_p)]
662
priority_set_direct.restype = _error_code
663
664
init = _library.gnutls_init
665
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
666
init.restype = _error_code
667
668
set_default_priority = _library.gnutls_set_default_priority
669
set_default_priority.argtypes = [session_t]
670
set_default_priority.restype = _error_code
671
672
record_send = _library.gnutls_record_send
673
record_send.argtypes = [session_t, ctypes.c_void_p,
674
ctypes.c_size_t]
675
record_send.restype = ctypes.c_ssize_t
676
record_send.errcheck = _retry_on_error
677
678
certificate_allocate_credentials = (
679
_library.gnutls_certificate_allocate_credentials)
680
certificate_allocate_credentials.argtypes = [
681
ctypes.POINTER(certificate_credentials_t)]
682
certificate_allocate_credentials.restype = _error_code
683
684
certificate_free_credentials = (
685
_library.gnutls_certificate_free_credentials)
686
certificate_free_credentials.argtypes = [
687
certificate_credentials_t]
688
certificate_free_credentials.restype = None
689
690
handshake_set_private_extensions = (
691
_library.gnutls_handshake_set_private_extensions)
692
handshake_set_private_extensions.argtypes = [session_t,
693
ctypes.c_int]
694
handshake_set_private_extensions.restype = None
695
696
credentials_set = _library.gnutls_credentials_set
697
credentials_set.argtypes = [session_t, credentials_type_t,
698
ctypes.c_void_p]
699
credentials_set.restype = _error_code
700
701
strerror = _library.gnutls_strerror
702
strerror.argtypes = [ctypes.c_int]
703
strerror.restype = ctypes.c_char_p
704
705
certificate_type_get = _library.gnutls_certificate_type_get
706
certificate_type_get.argtypes = [session_t]
707
certificate_type_get.restype = _error_code
708
709
certificate_get_peers = _library.gnutls_certificate_get_peers
710
certificate_get_peers.argtypes = [session_t,
711
ctypes.POINTER(ctypes.c_uint)]
712
certificate_get_peers.restype = ctypes.POINTER(datum_t)
713
714
global_set_log_level = _library.gnutls_global_set_log_level
715
global_set_log_level.argtypes = [ctypes.c_int]
716
global_set_log_level.restype = None
717
718
global_set_log_function = _library.gnutls_global_set_log_function
719
global_set_log_function.argtypes = [log_func]
720
global_set_log_function.restype = None
721
722
deinit = _library.gnutls_deinit
723
deinit.argtypes = [session_t]
724
deinit.restype = None
725
726
handshake = _library.gnutls_handshake
727
handshake.argtypes = [session_t]
728
handshake.restype = _error_code
729
handshake.errcheck = _retry_on_error
730
731
transport_set_ptr = _library.gnutls_transport_set_ptr
732
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
733
transport_set_ptr.restype = None
734
735
bye = _library.gnutls_bye
736
bye.argtypes = [session_t, close_request_t]
737
bye.restype = _error_code
738
bye.errcheck = _retry_on_error
739
740
check_version = _library.gnutls_check_version
741
check_version.argtypes = [ctypes.c_char_p]
742
check_version.restype = ctypes.c_char_p
743
744
_need_version = b"3.3.0"
745
if check_version(_need_version) is None:
746
raise self.Error("Needs GnuTLS {} or later"
747
.format(_need_version))
748
749
_tls_rawpk_version = b"3.6.6"
750
has_rawpk = bool(check_version(_tls_rawpk_version))
751
752
if has_rawpk:
753
# Types
754
class pubkey_st(ctypes.Structure):
755
_fields = []
756
pubkey_t = ctypes.POINTER(pubkey_st)
757
758
x509_crt_fmt_t = ctypes.c_int
759
760
# All the function declarations below are from gnutls/abstract.h
761
pubkey_init = _library.gnutls_pubkey_init
762
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
763
pubkey_init.restype = _error_code
764
765
pubkey_import = _library.gnutls_pubkey_import
766
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
767
x509_crt_fmt_t]
768
pubkey_import.restype = _error_code
769
770
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
771
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
772
ctypes.POINTER(ctypes.c_ubyte),
773
ctypes.POINTER(ctypes.c_size_t)]
774
pubkey_get_key_id.restype = _error_code
775
776
pubkey_deinit = _library.gnutls_pubkey_deinit
777
pubkey_deinit.argtypes = [pubkey_t]
778
pubkey_deinit.restype = None
779
else:
780
# All the function declarations below are from gnutls/openpgp.h
781
782
openpgp_crt_init = _library.gnutls_openpgp_crt_init
783
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
784
openpgp_crt_init.restype = _error_code
785
786
openpgp_crt_import = _library.gnutls_openpgp_crt_import
787
openpgp_crt_import.argtypes = [openpgp_crt_t,
788
ctypes.POINTER(datum_t),
789
openpgp_crt_fmt_t]
790
openpgp_crt_import.restype = _error_code
791
792
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
793
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
794
ctypes.POINTER(ctypes.c_uint)]
795
openpgp_crt_verify_self.restype = _error_code
796
797
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
798
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
799
openpgp_crt_deinit.restype = None
800
801
openpgp_crt_get_fingerprint = (
802
_library.gnutls_openpgp_crt_get_fingerprint)
803
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
804
ctypes.c_void_p,
805
ctypes.POINTER(
806
ctypes.c_size_t)]
807
openpgp_crt_get_fingerprint.restype = _error_code
808
809
if check_version(b"3.6.4"):
810
certificate_type_get2 = _library.gnutls_certificate_type_get2
811
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
812
certificate_type_get2.restype = _error_code
813
814
# Remove non-public functions
815
del _error_code, _retry_on_error
816
817
818
437
def call_pipe(connection, # : multiprocessing.Connection
819
438
func, *args, **kwargs):
820
439
"""This function is meant to be called by multiprocessing.Process
821
440
822
441
This function runs func(*args, **kwargs), and writes the resulting
823
442
return value on the provided multiprocessing.Connection.
824
443
"""
825
444
connection.send(func(*args, **kwargs))
826
445
connection.close()
827
446
828
829
class Client:
447
class Client(object):
830
448
"""A representation of a client host served by this server.
831
449
832
450
Attributes:
833
451
approved: bool(); 'None' if not yet approved/disapproved
834
452
approval_delay: datetime.timedelta(); Time to wait for approval
835
453
approval_duration: datetime.timedelta(); Duration of one approval
836
checker: multiprocessing.Process(); a running checker process used
837
to see if the client lives. 'None' if no process is
838
running.
839
checker_callback_tag: a GLib event source tag, or None
454
checker: subprocess.Popen(); a running checker process used
455
to see if the client lives.
456
'None' if no process is running.
457
checker_callback_tag: a gobject event source tag, or None
840
458
checker_command: string; External command which is run to check
841
459
if client lives. %() expansions are done at
842
460
runtime with vars(self) as dict, so that for
843
461
instance %(name)s can be used in the command.
844
checker_initiator_tag: a GLib event source tag, or None
462
checker_initiator_tag: a gobject event source tag, or None
845
463
created: datetime.datetime(); (UTC) object creation
846
464
client_structure: Object describing what attributes a client has
847
465
and is used for storing the client at exit
848
466
current_checker_command: string; current running checker_command
849
disable_initiator_tag: a GLib event source tag, or None
467
disable_initiator_tag: a gobject event source tag, or None
850
468
enabled: bool()
851
469
fingerprint: string (40 or 32 hexadecimal digits); used to
852
uniquely identify an OpenPGP client
853
key_id: string (64 hexadecimal digits); used to uniquely identify
854
a client using raw public keys
470
uniquely identify the client
855
471
host: string; available for use by the checker command
856
472
interval: datetime.timedelta(); How often to start a new checker
857
473
last_approval_request: datetime.datetime(); (UTC) or None
873
489
disabled, or None
874
490
server_settings: The server_settings dict from main()
875
491
"""
876
492
877
493
runtime_expansions = ("approval_delay", "approval_duration",
878
"created", "enabled", "expires", "key_id",
494
"created", "enabled", "expires",
879
495
"fingerprint", "host", "interval",
880
496
"last_approval_request", "last_checked_ok",
881
497
"last_enabled", "name", "timeout")
890
506
"approved_by_default": "True",
891
507
"enabled": "True",
892
508
}
893
509
894
510
@staticmethod
895
511
def config_parser(config):
896
512
"""Construct a new dict of client settings of this form:
903
519
for client_name in config.sections():
904
520
section = dict(config.items(client_name))
905
521
client = settings[client_name] = {}
906
522
907
523
client["host"] = section["host"]
908
524
# Reformat values from string types to Python types
909
525
client["approved_by_default"] = config.getboolean(
910
526
client_name, "approved_by_default")
911
527
client["enabled"] = config.getboolean(client_name,
912
528
"enabled")
913
914
# Uppercase and remove spaces from key_id and fingerprint
915
# for later comparison purposes with return value from the
916
# key_id() and fingerprint() functions
917
client["key_id"] = (section.get("key_id", "").upper()
918
.replace(" ", ""))
529
530
# Uppercase and remove spaces from fingerprint for later
531
# comparison purposes with return value from the
532
# fingerprint() function
919
533
client["fingerprint"] = (section["fingerprint"].upper()
920
534
.replace(" ", ""))
921
535
if "secret" in section:
922
client["secret"] = codecs.decode(section["secret"]
923
.encode("utf-8"),
924
"base64")
536
client["secret"] = section["secret"].decode("base64")
925
537
elif "secfile" in section:
926
538
with open(os.path.expanduser(os.path.expandvars
927
539
(section["secfile"])),
942
554
client["last_approval_request"] = None
943
555
client["last_checked_ok"] = None
944
556
client["last_checker_status"] = -2
945
557
946
558
return settings
947
948
def __init__(self, settings, name=None, server_settings=None):
559
560
def __init__(self, settings, name = None, server_settings=None):
949
561
self.name = name
950
562
if server_settings is None:
951
563
server_settings = {}
953
565
# adding all client settings
954
566
for setting, value in settings.items():
955
567
setattr(self, setting, value)
956
568
957
569
if self.enabled:
958
570
if not hasattr(self, "last_enabled"):
959
571
self.last_enabled = datetime.datetime.utcnow()
963
575
else:
964
576
self.last_enabled = None
965
577
self.expires = None
966
578
967
579
logger.debug("Creating client %r", self.name)
968
logger.debug(" Key ID: %s", self.key_id)
969
580
logger.debug(" Fingerprint: %s", self.fingerprint)
970
581
self.created = settings.get("created",
971
582
datetime.datetime.utcnow())
972
583
973
584
# attributes specific for this server instance
974
585
self.checker = None
975
586
self.checker_initiator_tag = None
981
592
self.changedstate = multiprocessing_manager.Condition(
982
593
multiprocessing_manager.Lock())
983
594
self.client_structure = [attr
984
for attr in self.__dict__.keys()
595
for attr in self.__dict__.iterkeys()
985
596
if not attr.startswith("_")]
986
597
self.client_structure.append("client_structure")
987
598
988
599
for name, t in inspect.getmembers(
989
600
type(self), lambda obj: isinstance(obj, property)):
990
601
if not name.startswith("_"):
991
602
self.client_structure.append(name)
992
603
993
604
# Send notice to process children that client state has changed
994
605
def send_changedstate(self):
995
606
with self.changedstate:
996
607
self.changedstate.notify_all()
997
608
998
609
def enable(self):
999
610
"""Start this client's checker and timeout hooks"""
1000
611
if getattr(self, "enabled", False):
1005
616
self.last_enabled = datetime.datetime.utcnow()
1006
617
self.init_checker()
1007
618
self.send_changedstate()
1008
619
1009
620
def disable(self, quiet=True):
1010
621
"""Disable this client."""
1011
622
if not getattr(self, "enabled", False):
1013
624
if not quiet:
1014
625
logger.info("Disabling client %s", self.name)
1015
626
if getattr(self, "disable_initiator_tag", None) is not None:
1016
GLib.source_remove(self.disable_initiator_tag)
627
gobject.source_remove(self.disable_initiator_tag)
1017
628
self.disable_initiator_tag = None
1018
629
self.expires = None
1019
630
if getattr(self, "checker_initiator_tag", None) is not None:
1020
GLib.source_remove(self.checker_initiator_tag)
631
gobject.source_remove(self.checker_initiator_tag)
1021
632
self.checker_initiator_tag = None
1022
633
self.stop_checker()
1023
634
self.enabled = False
1024
635
if not quiet:
1025
636
self.send_changedstate()
1026
# Do not run this again if called by a GLib.timeout_add
637
# Do not run this again if called by a gobject.timeout_add
1027
638
return False
1028
639
1029
640
def __del__(self):
1030
641
self.disable()
1031
642
1032
643
def init_checker(self):
1033
644
# Schedule a new checker to be started an 'interval' from now,
1034
645
# and every interval from then on.
1035
646
if self.checker_initiator_tag is not None:
1036
GLib.source_remove(self.checker_initiator_tag)
1037
self.checker_initiator_tag = GLib.timeout_add(
647
gobject.source_remove(self.checker_initiator_tag)
648
self.checker_initiator_tag = gobject.timeout_add(
1038
649
int(self.interval.total_seconds() * 1000),
1039
650
self.start_checker)
1040
651
# Schedule a disable() when 'timeout' has passed
1041
652
if self.disable_initiator_tag is not None:
1042
GLib.source_remove(self.disable_initiator_tag)
1043
self.disable_initiator_tag = GLib.timeout_add(
653
gobject.source_remove(self.disable_initiator_tag)
654
self.disable_initiator_tag = gobject.timeout_add(
1044
655
int(self.timeout.total_seconds() * 1000), self.disable)
1045
656
# Also start a new checker *right now*.
1046
657
self.start_checker()
1047
658
1048
659
def checker_callback(self, source, condition, connection,
1049
660
command):
1050
661
"""The checker has completed, so take appropriate actions."""
662
self.checker_callback_tag = None
663
self.checker = None
1051
664
# Read return code from connection (see call_pipe)
1052
665
returncode = connection.recv()
1053
666
connection.close()
1054
if self.checker is not None:
1055
self.checker.join()
1056
self.checker_callback_tag = None
1057
self.checker = None
1058
667
1059
668
if returncode >= 0:
1060
669
self.last_checker_status = returncode
1061
670
self.last_checker_signal = None
1071
680
logger.warning("Checker for %(name)s crashed?",
1072
681
vars(self))
1073
682
return False
1074
683
1075
684
def checked_ok(self):
1076
685
"""Assert that the client has been seen, alive and well."""
1077
686
self.last_checked_ok = datetime.datetime.utcnow()
1078
687
self.last_checker_status = 0
1079
688
self.last_checker_signal = None
1080
689
self.bump_timeout()
1081
690
1082
691
def bump_timeout(self, timeout=None):
1083
692
"""Bump up the timeout for this client."""
1084
693
if timeout is None:
1085
694
timeout = self.timeout
1086
695
if self.disable_initiator_tag is not None:
1087
GLib.source_remove(self.disable_initiator_tag)
696
gobject.source_remove(self.disable_initiator_tag)
1088
697
self.disable_initiator_tag = None
1089
698
if getattr(self, "enabled", False):
1090
self.disable_initiator_tag = GLib.timeout_add(
699
self.disable_initiator_tag = gobject.timeout_add(
1091
700
int(timeout.total_seconds() * 1000), self.disable)
1092
701
self.expires = datetime.datetime.utcnow() + timeout
1093
702
1094
703
def need_approval(self):
1095
704
self.last_approval_request = datetime.datetime.utcnow()
1096
705
1097
706
def start_checker(self):
1098
707
"""Start a new checker subprocess if one is not running.
1099
708
1100
709
If a checker already exists, leave it running and do
1101
710
nothing."""
1102
711
# The reason for not killing a running checker is that if we
1107
716
# checkers alone, the checker would have to take more time
1108
717
# than 'timeout' for the client to be disabled, which is as it
1109
718
# should be.
1110
719
1111
720
if self.checker is not None and not self.checker.is_alive():
1112
721
logger.warning("Checker was not alive; joining")
1113
722
self.checker.join()
1117
726
# Escape attributes for the shell
1118
727
escaped_attrs = {
1119
728
attr: re.escape(str(getattr(self, attr)))
1120
for attr in self.runtime_expansions}
729
for attr in self.runtime_expansions }
1121
730
try:
1122
731
command = self.checker_command % escaped_attrs
1123
732
except TypeError as error:
1135
744
# The exception is when not debugging but nevertheless
1136
745
# running in the foreground; use the previously
1137
746
# created wnull.
1138
popen_args = {"close_fds": True,
1139
"shell": True,
1140
"cwd": "/"}
747
popen_args = { "close_fds": True,
748
"shell": True,
749
"cwd": "/" }
1141
750
if (not self.server_settings["debug"]
1142
751
and self.server_settings["foreground"]):
1143
752
popen_args.update({"stdout": wnull,
1144
"stderr": wnull})
1145
pipe = multiprocessing.Pipe(duplex=False)
753
"stderr": wnull })
754
pipe = multiprocessing.Pipe(duplex = False)
1146
755
self.checker = multiprocessing.Process(
1147
target=call_pipe,
1148
args=(pipe[1], subprocess.call, command),
1149
kwargs=popen_args)
756
target = call_pipe,
757
args = (pipe[1], subprocess.call, command),
758
kwargs = popen_args)
1150
759
self.checker.start()
1151
self.checker_callback_tag = GLib.io_add_watch(
1152
GLib.IOChannel.unix_new(pipe[0].fileno()),
1153
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
760
self.checker_callback_tag = gobject.io_add_watch(
761
pipe[0].fileno(), gobject.IO_IN,
1154
762
self.checker_callback, pipe[0], command)
1155
# Re-run this periodically if run by GLib.timeout_add
763
# Re-run this periodically if run by gobject.timeout_add
1156
764
return True
1157
765
1158
766
def stop_checker(self):
1159
767
"""Force the checker process, if any, to stop."""
1160
768
if self.checker_callback_tag:
1161
GLib.source_remove(self.checker_callback_tag)
769
gobject.source_remove(self.checker_callback_tag)
1162
770
self.checker_callback_tag = None
1163
771
if getattr(self, "checker", None) is None:
1164
772
return
1173
781
byte_arrays=False):
1174
782
"""Decorators for marking methods of a DBusObjectWithProperties to
1175
783
become properties on the D-Bus.
1176
784
1177
785
The decorated method will be called with no arguments by "Get"
1178
786
and with one argument by "Set".
1179
787
1180
788
The parameters, where they are supported, are the same as
1181
789
dbus.service.method, except there is only "signature", since the
1182
790
type from Get() and the type sent to Set() is the same.
1186
794
if byte_arrays and signature != "ay":
1187
795
raise ValueError("Byte arrays not supported for non-'ay'"
1188
796
" signature {!r}".format(signature))
1189
797
1190
798
def decorator(func):
1191
799
func._dbus_is_property = True
1192
800
func._dbus_interface = dbus_interface
1195
803
func._dbus_name = func.__name__
1196
804
if func._dbus_name.endswith("_dbus_property"):
1197
805
func._dbus_name = func._dbus_name[:-14]
1198
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
806
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
1199
807
return func
1200
808
1201
809
return decorator
1202
810
1203
811
1204
812
def dbus_interface_annotations(dbus_interface):
1205
813
"""Decorator for marking functions returning interface annotations
1206
814
1207
815
Usage:
1208
816
1209
817
@dbus_interface_annotations("org.example.Interface")
1210
818
def _foo(self): # Function name does not matter
1211
819
return {"org.freedesktop.DBus.Deprecated": "true",
1212
820
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1213
821
"false"}
1214
822
"""
1215
823
1216
824
def decorator(func):
1217
825
func._dbus_is_interface = True
1218
826
func._dbus_interface = dbus_interface
1219
827
func._dbus_name = dbus_interface
1220
828
return func
1221
829
1222
830
return decorator
1223
831
1224
832
1225
833
def dbus_annotations(annotations):
1226
834
"""Decorator to annotate D-Bus methods, signals or properties
1227
835
Usage:
1228
836
1229
837
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1230
838
"org.freedesktop.DBus.Property."
1231
839
"EmitsChangedSignal": "false"})
1233
841
access="r")
1234
842
def Property_dbus_property(self):
1235
843
return dbus.Boolean(False)
1236
844
1237
845
See also the DBusObjectWithAnnotations class.
1238
846
"""
1239
847
1240
848
def decorator(func):
1241
849
func._dbus_annotations = annotations
1242
850
return func
1243
851
1244
852
return decorator
1245
853
1246
854
1264
872
1265
873
class DBusObjectWithAnnotations(dbus.service.Object):
1266
874
"""A D-Bus object with annotations.
1267
875
1268
876
Classes inheriting from this can use the dbus_annotations
1269
877
decorator to add annotations to methods or signals.
1270
878
"""
1271
879
1272
880
@staticmethod
1273
881
def _is_dbus_thing(thing):
1274
882
"""Returns a function testing if an attribute is a D-Bus thing
1275
883
1276
884
If called like _is_dbus_thing("method") it returns a function
1277
885
suitable for use as predicate to inspect.getmembers().
1278
886
"""
1279
887
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1280
888
False)
1281
889
1282
890
def _get_all_dbus_things(self, thing):
1283
891
"""Returns a generator of (name, attribute) pairs
1284
892
"""
1287
895
for cls in self.__class__.__mro__
1288
896
for name, athing in
1289
897
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1290
898
1291
899
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1292
out_signature="s",
1293
path_keyword='object_path',
1294
connection_keyword='connection')
900
out_signature = "s",
901
path_keyword = 'object_path',
902
connection_keyword = 'connection')
1295
903
def Introspect(self, object_path, connection):
1296
904
"""Overloading of standard D-Bus method.
1297
905
1298
906
Inserts annotation tags on methods and signals.
1299
907
"""
1300
908
xmlstring = dbus.service.Object.Introspect(self, object_path,
1301
909
connection)
1302
910
try:
1303
911
document = xml.dom.minidom.parseString(xmlstring)
1304
912
1305
913
for if_tag in document.getElementsByTagName("interface"):
1306
914
# Add annotation tags
1307
915
for typ in ("method", "signal"):
1334
942
if_tag.appendChild(ann_tag)
1335
943
# Fix argument name for the Introspect method itself
1336
944
if (if_tag.getAttribute("name")
1337
== dbus.INTROSPECTABLE_IFACE):
945
== dbus.INTROSPECTABLE_IFACE):
1338
946
for cn in if_tag.getElementsByTagName("method"):
1339
947
if cn.getAttribute("name") == "Introspect":
1340
948
for arg in cn.getElementsByTagName("arg"):
1353
961
1354
962
class DBusObjectWithProperties(DBusObjectWithAnnotations):
1355
963
"""A D-Bus object with properties.
1356
964
1357
965
Classes inheriting from this can use the dbus_service_property
1358
966
decorator to expose methods as D-Bus properties. It exposes the
1359
967
standard Get(), Set(), and GetAll() methods on the D-Bus.
1360
968
"""
1361
969
1362
970
def _get_dbus_property(self, interface_name, property_name):
1363
971
"""Returns a bound method if one exists which is a D-Bus
1364
972
property with the specified name and interface.
1369
977
if (value._dbus_name == property_name
1370
978
and value._dbus_interface == interface_name):
1371
979
return value.__get__(self)
1372
980
1373
981
# No such property
1374
982
raise DBusPropertyNotFound("{}:{}.{}".format(
1375
983
self.dbus_object_path, interface_name, property_name))
1376
984
1377
985
@classmethod
1378
986
def _get_all_interface_names(cls):
1379
987
"""Get a sequence of all interfaces supported by an object"""
1382
990
for x in (inspect.getmro(cls))
1383
991
for attr in dir(x))
1384
992
if name is not None)
1385
993
1386
994
@dbus.service.method(dbus.PROPERTIES_IFACE,
1387
995
in_signature="ss",
1388
996
out_signature="v")
1396
1004
if not hasattr(value, "variant_level"):
1397
1005
return value
1398
1006
return type(value)(value, variant_level=value.variant_level+1)
1399
1007
1400
1008
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
1401
1009
def Set(self, interface_name, property_name, value):
1402
1010
"""Standard D-Bus property Set() method, see D-Bus standard.
1411
1019
raise ValueError("Byte arrays not supported for non-"
1412
1020
"'ay' signature {!r}"
1413
1021
.format(prop._dbus_signature))
1414
value = dbus.ByteArray(bytes(value))
1022
value = dbus.ByteArray(b''.join(chr(byte)
1023
for byte in value))
1415
1024
prop(value)
1416
1025
1417
1026
@dbus.service.method(dbus.PROPERTIES_IFACE,
1418
1027
in_signature="s",
1419
1028
out_signature="a{sv}")
1420
1029
def GetAll(self, interface_name):
1421
1030
"""Standard D-Bus property GetAll() method, see D-Bus
1422
1031
standard.
1423
1032
1424
1033
Note: Will not include properties with access="write".
1425
1034
"""
1426
1035
properties = {}
1437
1046
properties[name] = value
1438
1047
continue
1439
1048
properties[name] = type(value)(
1440
value, variant_level=value.variant_level + 1)
1049
value, variant_level = value.variant_level + 1)
1441
1050
return dbus.Dictionary(properties, signature="sv")
1442
1051
1443
1052
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1444
1053
def PropertiesChanged(self, interface_name, changed_properties,
1445
1054
invalidated_properties):
1447
1056
standard.
1448
1057
"""
1449
1058
pass
1450
1059
1451
1060
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1452
1061
out_signature="s",
1453
1062
path_keyword='object_path',
1454
1063
connection_keyword='connection')
1455
1064
def Introspect(self, object_path, connection):
1456
1065
"""Overloading of standard D-Bus method.
1457
1066
1458
1067
Inserts property tags and interface annotation tags.
1459
1068
"""
1460
1069
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1462
1071
connection)
1463
1072
try:
1464
1073
document = xml.dom.minidom.parseString(xmlstring)
1465
1074
1466
1075
def make_tag(document, name, prop):
1467
1076
e = document.createElement("property")
1468
1077
e.setAttribute("name", name)
1469
1078
e.setAttribute("type", prop._dbus_signature)
1470
1079
e.setAttribute("access", prop._dbus_access)
1471
1080
return e
1472
1081
1473
1082
for if_tag in document.getElementsByTagName("interface"):
1474
1083
# Add property tags
1475
1084
for tag in (make_tag(document, name, prop)
1517
1126
exc_info=error)
1518
1127
return xmlstring
1519
1128
1520
1521
1129
try:
1522
1130
dbus.OBJECT_MANAGER_IFACE
1523
1131
except AttributeError:
1524
1132
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1525
1133
1526
1527
1134
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1528
1135
"""A D-Bus object with an ObjectManager.
1529
1136
1530
1137
Classes inheriting from this exposes the standard
1531
1138
GetManagedObjects call and the InterfacesAdded and
1532
1139
InterfacesRemoved signals on the standard
1533
1140
"org.freedesktop.DBus.ObjectManager" interface.
1534
1141
1535
1142
Note: No signals are sent automatically; they must be sent
1536
1143
manually.
1537
1144
"""
1538
1145
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1539
out_signature="a{oa{sa{sv}}}")
1146
out_signature = "a{oa{sa{sv}}}")
1540
1147
def GetManagedObjects(self):
1541
1148
"""This function must be overridden"""
1542
1149
raise NotImplementedError()
1543
1150
1544
1151
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1545
signature="oa{sa{sv}}")
1152
signature = "oa{sa{sv}}")
1546
1153
def InterfacesAdded(self, object_path, interfaces_and_properties):
1547
1154
pass
1548
1549
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1155
1156
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature = "oas")
1550
1157
def InterfacesRemoved(self, object_path, interfaces):
1551
1158
pass
1552
1159
1553
1160
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1554
out_signature="s",
1555
path_keyword='object_path',
1556
connection_keyword='connection')
1161
out_signature = "s",
1162
path_keyword = 'object_path',
1163
connection_keyword = 'connection')
1557
1164
def Introspect(self, object_path, connection):
1558
1165
"""Overloading of standard D-Bus method.
1559
1166
1560
1167
Override return argument name of GetManagedObjects to be
1561
1168
"objpath_interfaces_and_properties"
1562
1169
"""
1565
1172
connection)
1566
1173
try:
1567
1174
document = xml.dom.minidom.parseString(xmlstring)
1568
1175
1569
1176
for if_tag in document.getElementsByTagName("interface"):
1570
1177
# Fix argument name for the GetManagedObjects method
1571
1178
if (if_tag.getAttribute("name")
1572
== dbus.OBJECT_MANAGER_IFACE):
1179
== dbus.OBJECT_MANAGER_IFACE):
1573
1180
for cn in if_tag.getElementsByTagName("method"):
1574
1181
if (cn.getAttribute("name")
1575
1182
== "GetManagedObjects"):
1585
1192
except (AttributeError, xml.dom.DOMException,
1586
1193
xml.parsers.expat.ExpatError) as error:
1587
1194
logger.error("Failed to override Introspection method",
1588
exc_info=error)
1195
exc_info = error)
1589
1196
return xmlstring
1590
1197
1591
1592
1198
def datetime_to_dbus(dt, variant_level=0):
1593
1199
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1594
1200
if dt is None:
1595
return dbus.String("", variant_level=variant_level)
1201
return dbus.String("", variant_level = variant_level)
1596
1202
return dbus.String(dt.isoformat(), variant_level=variant_level)
1597
1203
1598
1204
1601
1207
dbus.service.Object, it will add alternate D-Bus attributes with
1602
1208
interface names according to the "alt_interface_names" mapping.
1603
1209
Usage:
1604
1210
1605
1211
@alternate_dbus_interfaces({"org.example.Interface":
1606
1212
"net.example.AlternateInterface"})
1607
1213
class SampleDBusObject(dbus.service.Object):
1608
1214
@dbus.service.method("org.example.Interface")
1609
1215
def SampleDBusMethod():
1610
1216
pass
1611
1217
1612
1218
The above "SampleDBusMethod" on "SampleDBusObject" will be
1613
1219
reachable via two interfaces: "org.example.Interface" and
1614
1220
"net.example.AlternateInterface", the latter of which will have
1615
1221
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1616
1222
"true", unless "deprecate" is passed with a False value.
1617
1223
1618
1224
This works for methods and signals, and also for D-Bus properties
1619
1225
(from DBusObjectWithProperties) and interfaces (from the
1620
1226
dbus_interface_annotations decorator).
1621
1227
"""
1622
1228
1623
1229
def wrapper(cls):
1624
1230
for orig_interface_name, alt_interface_name in (
1625
1231
alt_interface_names.items()):
1640
1246
interface_names.add(alt_interface)
1641
1247
# Is this a D-Bus signal?
1642
1248
if getattr(attribute, "_dbus_is_signal", False):
1643
# Extract the original non-method undecorated
1644
# function by black magic
1645
1249
if sys.version_info.major == 2:
1250
# Extract the original non-method undecorated
1251
# function by black magic
1646
1252
nonmethod_func = (dict(
1647
1253
zip(attribute.func_code.co_freevars,
1648
1254
attribute.__closure__))
1649
1255
["func"].cell_contents)
1650
1256
else:
1651
nonmethod_func = (dict(
1652
zip(attribute.__code__.co_freevars,
1653
attribute.__closure__))
1654
["func"].cell_contents)
1257
nonmethod_func = attribute
1655
1258
# Create a new, but exactly alike, function
1656
1259
# object, and decorate it to be a new D-Bus signal
1657
1260
# with the alternate D-Bus interface name
1658
new_function = copy_function(nonmethod_func)
1261
if sys.version_info.major == 2:
1262
new_function = types.FunctionType(
1263
nonmethod_func.func_code,
1264
nonmethod_func.func_globals,
1265
nonmethod_func.func_name,
1266
nonmethod_func.func_defaults,
1267
nonmethod_func.func_closure)
1268
else:
1269
new_function = types.FunctionType(
1270
nonmethod_func.__code__,
1271
nonmethod_func.__globals__,
1272
nonmethod_func.__name__,
1273
nonmethod_func.__defaults__,
1274
nonmethod_func.__closure__)
1659
1275
new_function = (dbus.service.signal(
1660
1276
alt_interface,
1661
1277
attribute._dbus_signature)(new_function))
1665
1281
attribute._dbus_annotations)
1666
1282
except AttributeError:
1667
1283
pass
1668
1669
1284
# Define a creator of a function to call both the
1670
1285
# original and alternate functions, so both the
1671
1286
# original and alternate signals gets sent when
1674
1289
"""This function is a scope container to pass
1675
1290
func1 and func2 to the "call_both" function
1676
1291
outside of its arguments"""
1677
1292
1678
1293
@functools.wraps(func2)
1679
1294
def call_both(*args, **kwargs):
1680
1295
"""This function will emit two D-Bus
1681
1296
signals by calling func1 and func2"""
1682
1297
func1(*args, **kwargs)
1683
1298
func2(*args, **kwargs)
1684
# Make wrapper function look like a D-Bus
1685
# signal
1299
# Make wrapper function look like a D-Bus signal
1686
1300
for name, attr in inspect.getmembers(func2):
1687
1301
if name.startswith("_dbus_"):
1688
1302
setattr(call_both, name, attr)
1689
1303
1690
1304
return call_both
1691
1305
# Create the "call_both" function and add it to
1692
1306
# the class
1702
1316
alt_interface,
1703
1317
attribute._dbus_in_signature,
1704
1318
attribute._dbus_out_signature)
1705
(copy_function(attribute)))
1319
(types.FunctionType(attribute.func_code,
1320
attribute.func_globals,
1321
attribute.func_name,
1322
attribute.func_defaults,
1323
attribute.func_closure)))
1706
1324
# Copy annotations, if any
1707
1325
try:
1708
1326
attr[attrname]._dbus_annotations = dict(
1720
1338
attribute._dbus_access,
1721
1339
attribute._dbus_get_args_options
1722
1340
["byte_arrays"])
1723
(copy_function(attribute)))
1341
(types.FunctionType(
1342
attribute.func_code,
1343
attribute.func_globals,
1344
attribute.func_name,
1345
attribute.func_defaults,
1346
attribute.func_closure)))
1724
1347
# Copy annotations, if any
1725
1348
try:
1726
1349
attr[attrname]._dbus_annotations = dict(
1735
1358
# to the class.
1736
1359
attr[attrname] = (
1737
1360
dbus_interface_annotations(alt_interface)
1738
(copy_function(attribute)))
1361
(types.FunctionType(attribute.func_code,
1362
attribute.func_globals,
1363
attribute.func_name,
1364
attribute.func_defaults,
1365
attribute.func_closure)))
1739
1366
if deprecate:
1740
1367
# Deprecate all alternate interfaces
1741
iname = "_AlternateDBusNames_interface_annotation{}"
1368
iname="_AlternateDBusNames_interface_annotation{}"
1742
1369
for interface_name in interface_names:
1743
1370
1744
1371
@dbus_interface_annotations(interface_name)
1745
1372
def func(self):
1746
return {"org.freedesktop.DBus.Deprecated":
1747
"true"}
1373
return { "org.freedesktop.DBus.Deprecated":
1374
"true" }
1748
1375
# Find an unused name
1749
1376
for aname in (iname.format(i)
1750
1377
for i in itertools.count()):
1754
1381
if interface_names:
1755
1382
# Replace the class with a new subclass of it with
1756
1383
# methods, signals, etc. as created above.
1757
if sys.version_info.major == 2:
1758
cls = type(b"{}Alternate".format(cls.__name__),
1759
(cls, ), attr)
1760
else:
1761
cls = type("{}Alternate".format(cls.__name__),
1762
(cls, ), attr)
1384
cls = type(b"{}Alternate".format(cls.__name__),
1385
(cls, ), attr)
1763
1386
return cls
1764
1387
1765
1388
return wrapper
1766
1389
1767
1390
1769
1392
"se.bsnet.fukt.Mandos"})
1770
1393
class ClientDBus(Client, DBusObjectWithProperties):
1771
1394
"""A Client class using D-Bus
1772
1395
1773
1396
Attributes:
1774
1397
dbus_object_path: dbus.ObjectPath
1775
1398
bus: dbus.SystemBus()
1776
1399
"""
1777
1400
1778
1401
runtime_expansions = (Client.runtime_expansions
1779
1402
+ ("dbus_object_path", ))
1780
1403
1781
1404
_interface = "se.recompile.Mandos.Client"
1782
1405
1783
1406
# dbus.service.Object doesn't use super(), so we can't either.
1784
1785
def __init__(self, bus=None, *args, **kwargs):
1407
1408
def __init__(self, bus = None, *args, **kwargs):
1786
1409
self.bus = bus
1787
1410
Client.__init__(self, *args, **kwargs)
1788
1411
# Only now, when this client is initialized, can it show up on
1794
1417
"/clients/" + client_object_name)
1795
1418
DBusObjectWithProperties.__init__(self, self.bus,
1796
1419
self.dbus_object_path)
1797
1420
1798
1421
def notifychangeproperty(transform_func, dbus_name,
1799
1422
type_func=lambda x: x,
1800
1423
variant_level=1,
1802
1425
_interface=_interface):
1803
1426
""" Modify a variable so that it's a property which announces
1804
1427
its changes to DBus.
1805
1428
1806
1429
transform_fun: Function that takes a value and a variant_level
1807
1430
and transforms it to a D-Bus type.
1808
1431
dbus_name: D-Bus name of the variable
1811
1434
variant_level: D-Bus variant level. Default: 1
1812
1435
"""
1813
1436
attrname = "_{}".format(dbus_name)
1814
1437
1815
1438
def setter(self, value):
1816
1439
if hasattr(self, "dbus_object_path"):
1817
1440
if (not hasattr(self, attrname) or
1824
1447
else:
1825
1448
dbus_value = transform_func(
1826
1449
type_func(value),
1827
variant_level=variant_level)
1450
variant_level = variant_level)
1828
1451
self.PropertyChanged(dbus.String(dbus_name),
1829
1452
dbus_value)
1830
1453
self.PropertiesChanged(
1831
1454
_interface,
1832
dbus.Dictionary({dbus.String(dbus_name):
1833
dbus_value}),
1455
dbus.Dictionary({ dbus.String(dbus_name):
1456
dbus_value }),
1834
1457
dbus.Array())
1835
1458
setattr(self, attrname, value)
1836
1459
1837
1460
return property(lambda self: getattr(self, attrname), setter)
1838
1461
1839
1462
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1840
1463
approvals_pending = notifychangeproperty(dbus.Boolean,
1841
1464
"ApprovalPending",
1842
type_func=bool)
1465
type_func = bool)
1843
1466
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1844
1467
last_enabled = notifychangeproperty(datetime_to_dbus,
1845
1468
"LastEnabled")
1846
1469
checker = notifychangeproperty(
1847
1470
dbus.Boolean, "CheckerRunning",
1848
type_func=lambda checker: checker is not None)
1471
type_func = lambda checker: checker is not None)
1849
1472
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1850
1473
"LastCheckedOK")
1851
1474
last_checker_status = notifychangeproperty(dbus.Int16,
1856
1479
"ApprovedByDefault")
1857
1480
approval_delay = notifychangeproperty(
1858
1481
dbus.UInt64, "ApprovalDelay",
1859
type_func=lambda td: td.total_seconds() * 1000)
1482
type_func = lambda td: td.total_seconds() * 1000)
1860
1483
approval_duration = notifychangeproperty(
1861
1484
dbus.UInt64, "ApprovalDuration",
1862
type_func=lambda td: td.total_seconds() * 1000)
1485
type_func = lambda td: td.total_seconds() * 1000)
1863
1486
host = notifychangeproperty(dbus.String, "Host")
1864
1487
timeout = notifychangeproperty(
1865
1488
dbus.UInt64, "Timeout",
1866
type_func=lambda td: td.total_seconds() * 1000)
1489
type_func = lambda td: td.total_seconds() * 1000)
1867
1490
extended_timeout = notifychangeproperty(
1868
1491
dbus.UInt64, "ExtendedTimeout",
1869
type_func=lambda td: td.total_seconds() * 1000)
1492
type_func = lambda td: td.total_seconds() * 1000)
1870
1493
interval = notifychangeproperty(
1871
1494
dbus.UInt64, "Interval",
1872
type_func=lambda td: td.total_seconds() * 1000)
1495
type_func = lambda td: td.total_seconds() * 1000)
1873
1496
checker_command = notifychangeproperty(dbus.String, "Checker")
1874
1497
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1875
1498
invalidate_only=True)
1876
1499
1877
1500
del notifychangeproperty
1878
1501
1879
1502
def __del__(self, *args, **kwargs):
1880
1503
try:
1881
1504
self.remove_from_connection()
1884
1507
if hasattr(DBusObjectWithProperties, "__del__"):
1885
1508
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1886
1509
Client.__del__(self, *args, **kwargs)
1887
1510
1888
1511
def checker_callback(self, source, condition,
1889
1512
connection, command, *args, **kwargs):
1890
1513
ret = Client.checker_callback(self, source, condition,
1906
1529
| self.last_checker_signal),
1907
1530
dbus.String(command))
1908
1531
return ret
1909
1532
1910
1533
def start_checker(self, *args, **kwargs):
1911
1534
old_checker_pid = getattr(self.checker, "pid", None)
1912
1535
r = Client.start_checker(self, *args, **kwargs)
1916
1539
# Emit D-Bus signal
1917
1540
self.CheckerStarted(self.current_checker_command)
1918
1541
return r
1919
1542
1920
1543
def _reset_approved(self):
1921
1544
self.approved = None
1922
1545
return False
1923
1546
1924
1547
def approve(self, value=True):
1925
1548
self.approved = value
1926
GLib.timeout_add(int(self.approval_duration.total_seconds()
1927
* 1000), self._reset_approved)
1549
gobject.timeout_add(int(self.approval_duration.total_seconds()
1550
* 1000), self._reset_approved)
1928
1551
self.send_changedstate()
1929
1930
# D-Bus methods, signals & properties
1931
1932
# Interfaces
1933
1934
# Signals
1935
1552
1553
## D-Bus methods, signals & properties
1554
1555
## Interfaces
1556
1557
## Signals
1558
1936
1559
# CheckerCompleted - signal
1937
1560
@dbus.service.signal(_interface, signature="nxs")
1938
1561
def CheckerCompleted(self, exitcode, waitstatus, command):
1939
1562
"D-Bus signal"
1940
1563
pass
1941
1564
1942
1565
# CheckerStarted - signal
1943
1566
@dbus.service.signal(_interface, signature="s")
1944
1567
def CheckerStarted(self, command):
1945
1568
"D-Bus signal"
1946
1569
pass
1947
1570
1948
1571
# PropertyChanged - signal
1949
1572
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1950
1573
@dbus.service.signal(_interface, signature="sv")
1951
1574
def PropertyChanged(self, property, value):
1952
1575
"D-Bus signal"
1953
1576
pass
1954
1577
1955
1578
# GotSecret - signal
1956
1579
@dbus.service.signal(_interface)
1957
1580
def GotSecret(self):
1960
1583
server to mandos-client
1961
1584
"""
1962
1585
pass
1963
1586
1964
1587
# Rejected - signal
1965
1588
@dbus.service.signal(_interface, signature="s")
1966
1589
def Rejected(self, reason):
1967
1590
"D-Bus signal"
1968
1591
pass
1969
1592
1970
1593
# NeedApproval - signal
1971
1594
@dbus.service.signal(_interface, signature="tb")
1972
1595
def NeedApproval(self, timeout, default):
1973
1596
"D-Bus signal"
1974
1597
return self.need_approval()
1975
1976
# Methods
1977
1598
1599
## Methods
1600
1978
1601
# Approve - method
1979
1602
@dbus.service.method(_interface, in_signature="b")
1980
1603
def Approve(self, value):
1981
1604
self.approve(value)
1982
1605
1983
1606
# CheckedOK - method
1984
1607
@dbus.service.method(_interface)
1985
1608
def CheckedOK(self):
1986
1609
self.checked_ok()
1987
1610
1988
1611
# Enable - method
1989
1612
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1990
1613
@dbus.service.method(_interface)
1991
1614
def Enable(self):
1992
1615
"D-Bus method"
1993
1616
self.enable()
1994
1617
1995
1618
# StartChecker - method
1996
1619
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1997
1620
@dbus.service.method(_interface)
1998
1621
def StartChecker(self):
1999
1622
"D-Bus method"
2000
1623
self.start_checker()
2001
1624
2002
1625
# Disable - method
2003
1626
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2004
1627
@dbus.service.method(_interface)
2005
1628
def Disable(self):
2006
1629
"D-Bus method"
2007
1630
self.disable()
2008
1631
2009
1632
# StopChecker - method
2010
1633
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2011
1634
@dbus.service.method(_interface)
2012
1635
def StopChecker(self):
2013
1636
self.stop_checker()
2014
2015
# Properties
2016
1637
1638
## Properties
1639
2017
1640
# ApprovalPending - property
2018
1641
@dbus_service_property(_interface, signature="b", access="read")
2019
1642
def ApprovalPending_dbus_property(self):
2020
1643
return dbus.Boolean(bool(self.approvals_pending))
2021
1644
2022
1645
# ApprovedByDefault - property
2023
1646
@dbus_service_property(_interface,
2024
1647
signature="b",
2027
1650
if value is None: # get
2028
1651
return dbus.Boolean(self.approved_by_default)
2029
1652
self.approved_by_default = bool(value)
2030
1653
2031
1654
# ApprovalDelay - property
2032
1655
@dbus_service_property(_interface,
2033
1656
signature="t",
2037
1660
return dbus.UInt64(self.approval_delay.total_seconds()
2038
1661
* 1000)
2039
1662
self.approval_delay = datetime.timedelta(0, 0, 0, value)
2040
1663
2041
1664
# ApprovalDuration - property
2042
1665
@dbus_service_property(_interface,
2043
1666
signature="t",
2047
1670
return dbus.UInt64(self.approval_duration.total_seconds()
2048
1671
* 1000)
2049
1672
self.approval_duration = datetime.timedelta(0, 0, 0, value)
2050
1673
2051
1674
# Name - property
2052
1675
@dbus_annotations(
2053
1676
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2054
1677
@dbus_service_property(_interface, signature="s", access="read")
2055
1678
def Name_dbus_property(self):
2056
1679
return dbus.String(self.name)
2057
2058
# KeyID - property
2059
@dbus_annotations(
2060
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2061
@dbus_service_property(_interface, signature="s", access="read")
2062
def KeyID_dbus_property(self):
2063
return dbus.String(self.key_id)
2064
1680
2065
1681
# Fingerprint - property
2066
1682
@dbus_annotations(
2067
1683
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2068
1684
@dbus_service_property(_interface, signature="s", access="read")
2069
1685
def Fingerprint_dbus_property(self):
2070
1686
return dbus.String(self.fingerprint)
2071
1687
2072
1688
# Host - property
2073
1689
@dbus_service_property(_interface,
2074
1690
signature="s",
2077
1693
if value is None: # get
2078
1694
return dbus.String(self.host)
2079
1695
self.host = str(value)
2080
1696
2081
1697
# Created - property
2082
1698
@dbus_annotations(
2083
1699
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2084
1700
@dbus_service_property(_interface, signature="s", access="read")
2085
1701
def Created_dbus_property(self):
2086
1702
return datetime_to_dbus(self.created)
2087
1703
2088
1704
# LastEnabled - property
2089
1705
@dbus_service_property(_interface, signature="s", access="read")
2090
1706
def LastEnabled_dbus_property(self):
2091
1707
return datetime_to_dbus(self.last_enabled)
2092
1708
2093
1709
# Enabled - property
2094
1710
@dbus_service_property(_interface,
2095
1711
signature="b",
2101
1717
self.enable()
2102
1718
else:
2103
1719
self.disable()
2104
1720
2105
1721
# LastCheckedOK - property
2106
1722
@dbus_service_property(_interface,
2107
1723
signature="s",
2111
1727
self.checked_ok()
2112
1728
return
2113
1729
return datetime_to_dbus(self.last_checked_ok)
2114
1730
2115
1731
# LastCheckerStatus - property
2116
1732
@dbus_service_property(_interface, signature="n", access="read")
2117
1733
def LastCheckerStatus_dbus_property(self):
2118
1734
return dbus.Int16(self.last_checker_status)
2119
1735
2120
1736
# Expires - property
2121
1737
@dbus_service_property(_interface, signature="s", access="read")
2122
1738
def Expires_dbus_property(self):
2123
1739
return datetime_to_dbus(self.expires)
2124
1740
2125
1741
# LastApprovalRequest - property
2126
1742
@dbus_service_property(_interface, signature="s", access="read")
2127
1743
def LastApprovalRequest_dbus_property(self):
2128
1744
return datetime_to_dbus(self.last_approval_request)
2129
1745
2130
1746
# Timeout - property
2131
1747
@dbus_service_property(_interface,
2132
1748
signature="t",
2147
1763
if (getattr(self, "disable_initiator_tag", None)
2148
1764
is None):
2149
1765
return
2150
GLib.source_remove(self.disable_initiator_tag)
2151
self.disable_initiator_tag = GLib.timeout_add(
1766
gobject.source_remove(self.disable_initiator_tag)
1767
self.disable_initiator_tag = gobject.timeout_add(
2152
1768
int((self.expires - now).total_seconds() * 1000),
2153
1769
self.disable)
2154
1770
2155
1771
# ExtendedTimeout - property
2156
1772
@dbus_service_property(_interface,
2157
1773
signature="t",
2161
1777
return dbus.UInt64(self.extended_timeout.total_seconds()
2162
1778
* 1000)
2163
1779
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2164
1780
2165
1781
# Interval - property
2166
1782
@dbus_service_property(_interface,
2167
1783
signature="t",
2174
1790
return
2175
1791
if self.enabled:
2176
1792
# Reschedule checker run
2177
GLib.source_remove(self.checker_initiator_tag)
2178
self.checker_initiator_tag = GLib.timeout_add(
1793
gobject.source_remove(self.checker_initiator_tag)
1794
self.checker_initiator_tag = gobject.timeout_add(
2179
1795
value, self.start_checker)
2180
self.start_checker() # Start one now, too
2181
1796
self.start_checker() # Start one now, too
1797
2182
1798
# Checker - property
2183
1799
@dbus_service_property(_interface,
2184
1800
signature="s",
2187
1803
if value is None: # get
2188
1804
return dbus.String(self.checker_command)
2189
1805
self.checker_command = str(value)
2190
1806
2191
1807
# CheckerRunning - property
2192
1808
@dbus_service_property(_interface,
2193
1809
signature="b",
2199
1815
self.start_checker()
2200
1816
else:
2201
1817
self.stop_checker()
2202
1818
2203
1819
# ObjectPath - property
2204
1820
@dbus_annotations(
2205
1821
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2206
1822
"org.freedesktop.DBus.Deprecated": "true"})
2207
1823
@dbus_service_property(_interface, signature="o", access="read")
2208
1824
def ObjectPath_dbus_property(self):
2209
return self.dbus_object_path # is already a dbus.ObjectPath
2210
1825
return self.dbus_object_path # is already a dbus.ObjectPath
1826
2211
1827
# Secret = property
2212
1828
@dbus_annotations(
2213
1829
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2218
1834
byte_arrays=True)
2219
1835
def Secret_dbus_property(self, value):
2220
1836
self.secret = bytes(value)
2221
1837
2222
1838
del _interface
2223
1839
2224
1840
2225
class ProxyClient:
2226
def __init__(self, child_pipe, key_id, fpr, address):
1841
class ProxyClient(object):
1842
def __init__(self, child_pipe, fpr, address):
2227
1843
self._pipe = child_pipe
2228
self._pipe.send(('init', key_id, fpr, address))
1844
self._pipe.send(('init', fpr, address))
2229
1845
if not self._pipe.recv():
2230
raise KeyError(key_id or fpr)
2231
1846
raise KeyError(fpr)
1847
2232
1848
def __getattribute__(self, name):
2233
1849
if name == '_pipe':
2234
1850
return super(ProxyClient, self).__getattribute__(name)
2237
1853
if data[0] == 'data':
2238
1854
return data[1]
2239
1855
if data[0] == 'function':
2240
1856
2241
1857
def func(*args, **kwargs):
2242
1858
self._pipe.send(('funcall', name, args, kwargs))
2243
1859
return self._pipe.recv()[1]
2244
1860
2245
1861
return func
2246
1862
2247
1863
def __setattr__(self, name, value):
2248
1864
if name == '_pipe':
2249
1865
return super(ProxyClient, self).__setattr__(name, value)
2252
1868
2253
1869
class ClientHandler(socketserver.BaseRequestHandler, object):
2254
1870
"""A class to handle client connections.
2255
1871
2256
1872
Instantiated once for each connection to handle it.
2257
1873
Note: This will run in its own forked process."""
2258
1874
2259
1875
def handle(self):
2260
1876
with contextlib.closing(self.server.child_pipe) as child_pipe:
2261
1877
logger.info("TCP connection from: %s",
2262
1878
str(self.client_address))
2263
1879
logger.debug("Pipe FD: %d",
2264
1880
self.server.child_pipe.fileno())
2265
2266
session = gnutls.ClientSession(self.request)
2267
2268
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2269
# "+AES-256-CBC", "+SHA1",
2270
# "+COMP-NULL", "+CTYPE-OPENPGP",
2271
# "+DHE-DSS"))
1881
1882
session = gnutls.connection.ClientSession(
1883
self.request, gnutls.connection.X509Credentials())
1884
1885
# Note: gnutls.connection.X509Credentials is really a
1886
# generic GnuTLS certificate credentials object so long as
1887
# no X.509 keys are added to it. Therefore, we can use it
1888
# here despite using OpenPGP certificates.
1889
1890
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1891
# "+AES-256-CBC", "+SHA1",
1892
# "+COMP-NULL", "+CTYPE-OPENPGP",
1893
# "+DHE-DSS"))
2272
1894
# Use a fallback default, since this MUST be set.
2273
1895
priority = self.server.gnutls_priority
2274
1896
if priority is None:
2275
1897
priority = "NORMAL"
2276
gnutls.priority_set_direct(session._c_object,
2277
priority.encode("utf-8"),
2278
None)
2279
1898
gnutls.library.functions.gnutls_priority_set_direct(
1899
session._c_object, priority, None)
1900
2280
1901
# Start communication using the Mandos protocol
2281
1902
# Get protocol number
2282
1903
line = self.request.makefile().readline()
2287
1908
except (ValueError, IndexError, RuntimeError) as error:
2288
1909
logger.error("Unknown protocol version: %s", error)
2289
1910
return
2290
1911
2291
1912
# Start GnuTLS connection
2292
1913
try:
2293
1914
session.handshake()
2294
except gnutls.Error as error:
1915
except gnutls.errors.GNUTLSError as error:
2295
1916
logger.warning("Handshake failed: %s", error)
2296
1917
# Do not run session.bye() here: the session is not
2297
1918
# established. Just abandon the request.
2298
1919
return
2299
1920
logger.debug("Handshake succeeded")
2300
1921
2301
1922
approval_required = False
2302
1923
try:
2303
if gnutls.has_rawpk:
2304
fpr = b""
2305
try:
2306
key_id = self.key_id(
2307
self.peer_certificate(session))
2308
except (TypeError, gnutls.Error) as error:
2309
logger.warning("Bad certificate: %s", error)
2310
return
2311
logger.debug("Key ID: %s", key_id)
2312
2313
else:
2314
key_id = b""
2315
try:
2316
fpr = self.fingerprint(
2317
self.peer_certificate(session))
2318
except (TypeError, gnutls.Error) as error:
2319
logger.warning("Bad certificate: %s", error)
2320
return
2321
logger.debug("Fingerprint: %s", fpr)
2322
2323
try:
2324
client = ProxyClient(child_pipe, key_id, fpr,
1924
try:
1925
fpr = self.fingerprint(
1926
self.peer_certificate(session))
1927
except (TypeError,
1928
gnutls.errors.GNUTLSError) as error:
1929
logger.warning("Bad certificate: %s", error)
1930
return
1931
logger.debug("Fingerprint: %s", fpr)
1932
1933
try:
1934
client = ProxyClient(child_pipe, fpr,
2325
1935
self.client_address)
2326
1936
except KeyError:
2327
1937
return
2328
1938
2329
1939
if client.approval_delay:
2330
1940
delay = client.approval_delay
2331
1941
client.approvals_pending += 1
2332
1942
approval_required = True
2333
1943
2334
1944
while True:
2335
1945
if not client.enabled:
2336
1946
logger.info("Client %s is disabled",
2339
1949
# Emit D-Bus signal
2340
1950
client.Rejected("Disabled")
2341
1951
return
2342
1952
2343
1953
if client.approved or not client.approval_delay:
2344
# We are approved or approval is disabled
1954
#We are approved or approval is disabled
2345
1955
break
2346
1956
elif client.approved is None:
2347
1957
logger.info("Client %s needs approval",
2358
1968
# Emit D-Bus signal
2359
1969
client.Rejected("Denied")
2360
1970
return
2361
2362
# wait until timeout or approved
1971
1972
#wait until timeout or approved
2363
1973
time = datetime.datetime.now()
2364
1974
client.changedstate.acquire()
2365
1975
client.changedstate.wait(delay.total_seconds())
2378
1988
break
2379
1989
else:
2380
1990
delay -= time2 - time
2381
2382
try:
2383
session.send(client.secret)
2384
except gnutls.Error as error:
2385
logger.warning("gnutls send failed",
2386
exc_info=error)
2387
return
2388
1991
1992
sent_size = 0
1993
while sent_size < len(client.secret):
1994
try:
1995
sent = session.send(client.secret[sent_size:])
1996
except gnutls.errors.GNUTLSError as error:
1997
logger.warning("gnutls send failed",
1998
exc_info=error)
1999
return
2000
logger.debug("Sent: %d, remaining: %d", sent,
2001
len(client.secret) - (sent_size
2002
+ sent))
2003
sent_size += sent
2004
2389
2005
logger.info("Sending secret to %s", client.name)
2390
2006
# bump the timeout using extended_timeout
2391
2007
client.bump_timeout(client.extended_timeout)
2392
2008
if self.server.use_dbus:
2393
2009
# Emit D-Bus signal
2394
2010
client.GotSecret()
2395
2011
2396
2012
finally:
2397
2013
if approval_required:
2398
2014
client.approvals_pending -= 1
2399
2015
try:
2400
2016
session.bye()
2401
except gnutls.Error as error:
2017
except gnutls.errors.GNUTLSError as error:
2402
2018
logger.warning("GnuTLS bye failed",
2403
2019
exc_info=error)
2404
2020
2405
2021
@staticmethod
2406
2022
def peer_certificate(session):
2407
"Return the peer's certificate as a bytestring"
2408
try:
2409
cert_type = gnutls.certificate_type_get2(session._c_object,
2410
gnutls.CTYPE_PEERS)
2411
except AttributeError:
2412
cert_type = gnutls.certificate_type_get(session._c_object)
2413
if gnutls.has_rawpk:
2414
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2415
else:
2416
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2417
# If not a valid certificate type...
2418
if cert_type not in valid_cert_types:
2419
logger.info("Cert type %r not in %r", cert_type,
2420
valid_cert_types)
2421
# ...return invalid data
2422
return b""
2023
"Return the peer's OpenPGP certificate as a bytestring"
2024
# If not an OpenPGP certificate...
2025
if (gnutls.library.functions.gnutls_certificate_type_get(
2026
session._c_object)
2027
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
2028
# ...do the normal thing
2029
return session.peer_certificate
2423
2030
list_size = ctypes.c_uint(1)
2424
cert_list = (gnutls.certificate_get_peers
2031
cert_list = (gnutls.library.functions
2032
.gnutls_certificate_get_peers
2425
2033
(session._c_object, ctypes.byref(list_size)))
2426
2034
if not bool(cert_list) and list_size.value != 0:
2427
raise gnutls.Error("error getting peer certificate")
2035
raise gnutls.errors.GNUTLSError("error getting peer"
2036
" certificate")
2428
2037
if list_size.value == 0:
2429
2038
return None
2430
2039
cert = cert_list[0]
2431
2040
return ctypes.string_at(cert.data, cert.size)
2432
2433
@staticmethod
2434
def key_id(certificate):
2435
"Convert a certificate bytestring to a hexdigit key ID"
2436
# New GnuTLS "datum" with the public key
2437
datum = gnutls.datum_t(
2438
ctypes.cast(ctypes.c_char_p(certificate),
2439
ctypes.POINTER(ctypes.c_ubyte)),
2440
ctypes.c_uint(len(certificate)))
2441
# XXX all these need to be created in the gnutls "module"
2442
# New empty GnuTLS certificate
2443
pubkey = gnutls.pubkey_t()
2444
gnutls.pubkey_init(ctypes.byref(pubkey))
2445
# Import the raw public key into the certificate
2446
gnutls.pubkey_import(pubkey,
2447
ctypes.byref(datum),
2448
gnutls.X509_FMT_DER)
2449
# New buffer for the key ID
2450
buf = ctypes.create_string_buffer(32)
2451
buf_len = ctypes.c_size_t(len(buf))
2452
# Get the key ID from the raw public key into the buffer
2453
gnutls.pubkey_get_key_id(pubkey,
2454
gnutls.KEYID_USE_SHA256,
2455
ctypes.cast(ctypes.byref(buf),
2456
ctypes.POINTER(ctypes.c_ubyte)),
2457
ctypes.byref(buf_len))
2458
# Deinit the certificate
2459
gnutls.pubkey_deinit(pubkey)
2460
2461
# Convert the buffer to a Python bytestring
2462
key_id = ctypes.string_at(buf, buf_len.value)
2463
# Convert the bytestring to hexadecimal notation
2464
hex_key_id = binascii.hexlify(key_id).upper()
2465
return hex_key_id
2466
2041
2467
2042
@staticmethod
2468
2043
def fingerprint(openpgp):
2469
2044
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2470
2045
# New GnuTLS "datum" with the OpenPGP public key
2471
datum = gnutls.datum_t(
2046
datum = gnutls.library.types.gnutls_datum_t(
2472
2047
ctypes.cast(ctypes.c_char_p(openpgp),
2473
2048
ctypes.POINTER(ctypes.c_ubyte)),
2474
2049
ctypes.c_uint(len(openpgp)))
2475
2050
# New empty GnuTLS certificate
2476
crt = gnutls.openpgp_crt_t()
2477
gnutls.openpgp_crt_init(ctypes.byref(crt))
2051
crt = gnutls.library.types.gnutls_openpgp_crt_t()
2052
gnutls.library.functions.gnutls_openpgp_crt_init(
2053
ctypes.byref(crt))
2478
2054
# Import the OpenPGP public key into the certificate
2479
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2480
gnutls.OPENPGP_FMT_RAW)
2055
gnutls.library.functions.gnutls_openpgp_crt_import(
2056
crt, ctypes.byref(datum),
2057
gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)
2481
2058
# Verify the self signature in the key
2482
2059
crtverify = ctypes.c_uint()
2483
gnutls.openpgp_crt_verify_self(crt, 0,
2484
ctypes.byref(crtverify))
2060
gnutls.library.functions.gnutls_openpgp_crt_verify_self(
2061
crt, 0, ctypes.byref(crtverify))
2485
2062
if crtverify.value != 0:
2486
gnutls.openpgp_crt_deinit(crt)
2487
raise gnutls.CertificateSecurityError(code
2488
=crtverify.value)
2063
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2064
raise gnutls.errors.CertificateSecurityError(
2065
"Verify failed")
2489
2066
# New buffer for the fingerprint
2490
2067
buf = ctypes.create_string_buffer(20)
2491
2068
buf_len = ctypes.c_size_t()
2492
2069
# Get the fingerprint from the certificate into the buffer
2493
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2494
ctypes.byref(buf_len))
2070
gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint(
2071
crt, ctypes.byref(buf), ctypes.byref(buf_len))
2495
2072
# Deinit the certificate
2496
gnutls.openpgp_crt_deinit(crt)
2073
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2497
2074
# Convert the buffer to a Python bytestring
2498
2075
fpr = ctypes.string_at(buf, buf_len.value)
2499
2076
# Convert the bytestring to hexadecimal notation
2501
2078
return hex_fpr
2502
2079
2503
2080
2504
class MultiprocessingMixIn:
2081
class MultiprocessingMixIn(object):
2505
2082
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2506
2083
2507
2084
def sub_process_main(self, request, address):
2508
2085
try:
2509
2086
self.finish_request(request, address)
2510
2087
except Exception:
2511
2088
self.handle_error(request, address)
2512
2089
self.close_request(request)
2513
2090
2514
2091
def process_request(self, request, address):
2515
2092
"""Start a new process to process the request."""
2516
proc = multiprocessing.Process(target=self.sub_process_main,
2517
args=(request, address))
2093
proc = multiprocessing.Process(target = self.sub_process_main,
2094
args = (request, address))
2518
2095
proc.start()
2519
2096
return proc
2520
2097
2521
2098
2522
class MultiprocessingMixInWithPipe(MultiprocessingMixIn):
2099
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2523
2100
""" adds a pipe to the MixIn """
2524
2101
2525
2102
def process_request(self, request, client_address):
2526
2103
"""Overrides and wraps the original process_request().
2527
2104
2528
2105
This function creates a new pipe in self.pipe
2529
2106
"""
2530
2107
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2531
2108
2532
2109
proc = MultiprocessingMixIn.process_request(self, request,
2533
2110
client_address)
2534
2111
self.child_pipe.close()
2535
2112
self.add_pipe(parent_pipe, proc)
2536
2113
2537
2114
def add_pipe(self, parent_pipe, proc):
2538
2115
"""Dummy function; override as necessary"""
2539
2116
raise NotImplementedError()
2540
2117
2541
2118
2542
2119
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2543
socketserver.TCPServer):
2120
socketserver.TCPServer, object):
2544
2121
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
2545
2122
2546
2123
Attributes:
2547
2124
enabled: Boolean; whether this server is activated yet
2548
2125
interface: None or a network interface name (string)
2549
2126
use_ipv6: Boolean; to use IPv6 or not
2550
2127
"""
2551
2128
2552
2129
def __init__(self, server_address, RequestHandlerClass,
2553
2130
interface=None,
2554
2131
use_ipv6=True,
2564
2141
self.socketfd = socketfd
2565
2142
# Save the original socket.socket() function
2566
2143
self.socket_socket = socket.socket
2567
2568
2144
# To implement --socket, we monkey patch socket.socket.
2569
#
2145
#
2570
2146
# (When socketserver.TCPServer is a new-style class, we
2571
2147
# could make self.socket into a property instead of monkey
2572
2148
# patching socket.socket.)
2573
#
2149
#
2574
2150
# Create a one-time-only replacement for socket.socket()
2575
2151
@functools.wraps(socket.socket)
2576
2152
def socket_wrapper(*args, **kwargs):
2588
2164
# socket_wrapper(), if socketfd was set.
2589
2165
socketserver.TCPServer.__init__(self, server_address,
2590
2166
RequestHandlerClass)
2591
2167
2592
2168
def server_bind(self):
2593
2169
"""This overrides the normal server_bind() function
2594
2170
to bind to an interface if one was specified, and also NOT to
2595
2171
bind to an address or port if they were not specified."""
2596
global SO_BINDTODEVICE
2597
2172
if self.interface is not None:
2598
2173
if SO_BINDTODEVICE is None:
2599
# Fall back to a hard-coded value which seems to be
2600
# common enough.
2601
logger.warning("SO_BINDTODEVICE not found, trying 25")
2602
SO_BINDTODEVICE = 25
2603
try:
2604
self.socket.setsockopt(
2605
socket.SOL_SOCKET, SO_BINDTODEVICE,
2606
(self.interface + "\0").encode("utf-8"))
2607
except socket.error as error:
2608
if error.errno == errno.EPERM:
2609
logger.error("No permission to bind to"
2610
" interface %s", self.interface)
2611
elif error.errno == errno.ENOPROTOOPT:
2612
logger.error("SO_BINDTODEVICE not available;"
2613
" cannot bind to interface %s",
2614
self.interface)
2615
elif error.errno == errno.ENODEV:
2616
logger.error("Interface %s does not exist,"
2617
" cannot bind", self.interface)
2618
else:
2619
raise
2174
logger.error("SO_BINDTODEVICE does not exist;"
2175
" cannot bind to interface %s",
2176
self.interface)
2177
else:
2178
try:
2179
self.socket.setsockopt(
2180
socket.SOL_SOCKET, SO_BINDTODEVICE,
2181
(self.interface + "\0").encode("utf-8"))
2182
except socket.error as error:
2183
if error.errno == errno.EPERM:
2184
logger.error("No permission to bind to"
2185
" interface %s", self.interface)
2186
elif error.errno == errno.ENOPROTOOPT:
2187
logger.error("SO_BINDTODEVICE not available;"
2188
" cannot bind to interface %s",
2189
self.interface)
2190
elif error.errno == errno.ENODEV:
2191
logger.error("Interface %s does not exist,"
2192
" cannot bind", self.interface)
2193
else:
2194
raise
2620
2195
# Only bind(2) the socket if we really need to.
2621
2196
if self.server_address[0] or self.server_address[1]:
2622
if self.server_address[1]:
2623
self.allow_reuse_address = True
2624
2197
if not self.server_address[0]:
2625
2198
if self.address_family == socket.AF_INET6:
2626
any_address = "::" # in6addr_any
2199
any_address = "::" # in6addr_any
2627
2200
else:
2628
any_address = "0.0.0.0" # INADDR_ANY
2201
any_address = "0.0.0.0" # INADDR_ANY
2629
2202
self.server_address = (any_address,
2630
2203
self.server_address[1])
2631
2204
elif not self.server_address[1]:
2641
2214
2642
2215
class MandosServer(IPv6_TCPServer):
2643
2216
"""Mandos server.
2644
2217
2645
2218
Attributes:
2646
2219
clients: set of Client objects
2647
2220
gnutls_priority GnuTLS priority string
2648
2221
use_dbus: Boolean; to emit D-Bus signals or not
2649
2650
Assumes a GLib.MainLoop event loop.
2222
2223
Assumes a gobject.MainLoop event loop.
2651
2224
"""
2652
2225
2653
2226
def __init__(self, server_address, RequestHandlerClass,
2654
2227
interface=None,
2655
2228
use_ipv6=True,
2665
2238
self.gnutls_priority = gnutls_priority
2666
2239
IPv6_TCPServer.__init__(self, server_address,
2667
2240
RequestHandlerClass,
2668
interface=interface,
2669
use_ipv6=use_ipv6,
2670
socketfd=socketfd)
2671
2241
interface = interface,
2242
use_ipv6 = use_ipv6,
2243
socketfd = socketfd)
2244
2672
2245
def server_activate(self):
2673
2246
if self.enabled:
2674
2247
return socketserver.TCPServer.server_activate(self)
2675
2248
2676
2249
def enable(self):
2677
2250
self.enabled = True
2678
2251
2679
2252
def add_pipe(self, parent_pipe, proc):
2680
2253
# Call "handle_ipc" for both data and EOF events
2681
GLib.io_add_watch(
2682
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2683
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2254
gobject.io_add_watch(
2255
parent_pipe.fileno(),
2256
gobject.IO_IN | gobject.IO_HUP,
2684
2257
functools.partial(self.handle_ipc,
2685
parent_pipe=parent_pipe,
2686
proc=proc))
2687
2258
parent_pipe = parent_pipe,
2259
proc = proc))
2260
2688
2261
def handle_ipc(self, source, condition,
2689
2262
parent_pipe=None,
2690
proc=None,
2263
proc = None,
2691
2264
client_object=None):
2692
2265
# error, or the other end of multiprocessing.Pipe has closed
2693
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2266
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2694
2267
# Wait for other process to exit
2695
2268
proc.join()
2696
2269
return False
2697
2270
2698
2271
# Read a request from the child
2699
2272
request = parent_pipe.recv()
2700
2273
command = request[0]
2701
2274
2702
2275
if command == 'init':
2703
key_id = request[1].decode("ascii")
2704
fpr = request[2].decode("ascii")
2705
address = request[3]
2706
2707
for c in self.clients.values():
2708
if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2709
continue
2710
if key_id and c.key_id == key_id:
2711
client = c
2712
break
2713
if fpr and c.fingerprint == fpr:
2276
fpr = request[1]
2277
address = request[2]
2278
2279
for c in self.clients.itervalues():
2280
if c.fingerprint == fpr:
2714
2281
client = c
2715
2282
break
2716
2283
else:
2717
logger.info("Client not found for key ID: %s, address"
2718
": %s", key_id or fpr, address)
2284
logger.info("Client not found for fingerprint: %s, ad"
2285
"dress: %s", fpr, address)
2719
2286
if self.use_dbus:
2720
2287
# Emit D-Bus signal
2721
mandos_dbus_service.ClientNotFound(key_id or fpr,
2288
mandos_dbus_service.ClientNotFound(fpr,
2722
2289
address[0])
2723
2290
parent_pipe.send(False)
2724
2291
return False
2725
2726
GLib.io_add_watch(
2727
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2728
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2292
2293
gobject.io_add_watch(
2294
parent_pipe.fileno(),
2295
gobject.IO_IN | gobject.IO_HUP,
2729
2296
functools.partial(self.handle_ipc,
2730
parent_pipe=parent_pipe,
2731
proc=proc,
2732
client_object=client))
2297
parent_pipe = parent_pipe,
2298
proc = proc,
2299
client_object = client))
2733
2300
parent_pipe.send(True)
2734
2301
# remove the old hook in favor of the new above hook on
2735
2302
# same fileno
2738
2305
funcname = request[1]
2739
2306
args = request[2]
2740
2307
kwargs = request[3]
2741
2308
2742
2309
parent_pipe.send(('data', getattr(client_object,
2743
2310
funcname)(*args,
2744
2311
**kwargs)))
2745
2312
2746
2313
if command == 'getattr':
2747
2314
attrname = request[1]
2748
2315
if isinstance(client_object.__getattribute__(attrname),
2751
2318
else:
2752
2319
parent_pipe.send((
2753
2320
'data', client_object.__getattribute__(attrname)))
2754
2321
2755
2322
if command == 'setattr':
2756
2323
attrname = request[1]
2757
2324
value = request[2]
2758
2325
setattr(client_object, attrname, value)
2759
2326
2760
2327
return True
2761
2328
2762
2329
2763
2330
def rfc3339_duration_to_delta(duration):
2764
2331
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2765
2766
>>> rfc3339_duration_to_delta("P7D") == datetime.timedelta(7)
2767
True
2768
>>> rfc3339_duration_to_delta("PT60S") == datetime.timedelta(0, 60)
2769
True
2770
>>> rfc3339_duration_to_delta("PT60M") == datetime.timedelta(0, 3600)
2771
True
2772
>>> rfc3339_duration_to_delta("PT24H") == datetime.timedelta(1)
2773
True
2774
>>> rfc3339_duration_to_delta("P1W") == datetime.timedelta(7)
2775
True
2776
>>> rfc3339_duration_to_delta("PT5M30S") == datetime.timedelta(0, 330)
2777
True
2778
>>> rfc3339_duration_to_delta("P1DT3M20S") == datetime.timedelta(1, 200)
2779
True
2332
2333
>>> rfc3339_duration_to_delta("P7D")
2334
datetime.timedelta(7)
2335
>>> rfc3339_duration_to_delta("PT60S")
2336
datetime.timedelta(0, 60)
2337
>>> rfc3339_duration_to_delta("PT60M")
2338
datetime.timedelta(0, 3600)
2339
>>> rfc3339_duration_to_delta("PT24H")
2340
datetime.timedelta(1)
2341
>>> rfc3339_duration_to_delta("P1W")
2342
datetime.timedelta(7)
2343
>>> rfc3339_duration_to_delta("PT5M30S")
2344
datetime.timedelta(0, 330)
2345
>>> rfc3339_duration_to_delta("P1DT3M20S")
2346
datetime.timedelta(1, 200)
2780
2347
"""
2781
2348
2782
2349
# Parsing an RFC 3339 duration with regular expressions is not
2783
2350
# possible - there would have to be multiple places for the same
2784
2351
# values, like seconds. The current code, while more esoteric, is
2785
2352
# cleaner without depending on a parsing library. If Python had a
2786
2353
# built-in library for parsing we would use it, but we'd like to
2787
2354
# avoid excessive use of external libraries.
2788
2355
2789
2356
# New type for defining tokens, syntax, and semantics all-in-one
2790
2357
Token = collections.namedtuple("Token", (
2791
2358
"regexp", # To match token; if "value" is not None, must have
2824
2391
frozenset((token_year, token_month,
2825
2392
token_day, token_time,
2826
2393
token_week)))
2827
# Define starting values:
2828
# Value so far
2829
value = datetime.timedelta()
2394
# Define starting values
2395
value = datetime.timedelta() # Value so far
2830
2396
found_token = None
2831
# Following valid tokens
2832
followers = frozenset((token_duration, ))
2833
# String left to parse
2834
s = duration
2397
followers = frozenset((token_duration, )) # Following valid tokens
2398
s = duration # String left to parse
2835
2399
# Loop until end token is found
2836
2400
while found_token is not token_end:
2837
2401
# Search for any currently valid tokens
2861
2425
2862
2426
def string_to_delta(interval):
2863
2427
"""Parse a string and return a datetime.timedelta
2864
2865
>>> string_to_delta('7d') == datetime.timedelta(7)
2866
True
2867
>>> string_to_delta('60s') == datetime.timedelta(0, 60)
2868
True
2869
>>> string_to_delta('60m') == datetime.timedelta(0, 3600)
2870
True
2871
>>> string_to_delta('24h') == datetime.timedelta(1)
2872
True
2873
>>> string_to_delta('1w') == datetime.timedelta(7)
2874
True
2875
>>> string_to_delta('5m 30s') == datetime.timedelta(0, 330)
2876
True
2428
2429
>>> string_to_delta('7d')
2430
datetime.timedelta(7)
2431
>>> string_to_delta('60s')
2432
datetime.timedelta(0, 60)
2433
>>> string_to_delta('60m')
2434
datetime.timedelta(0, 3600)
2435
>>> string_to_delta('24h')
2436
datetime.timedelta(1)
2437
>>> string_to_delta('1w')
2438
datetime.timedelta(7)
2439
>>> string_to_delta('5m 30s')
2440
datetime.timedelta(0, 330)
2877
2441
"""
2878
2442
2879
2443
try:
2880
2444
return rfc3339_duration_to_delta(interval)
2881
2445
except ValueError:
2882
2446
pass
2883
2447
2884
2448
timevalue = datetime.timedelta(0)
2885
2449
for s in interval.split():
2886
2450
try:
2904
2468
return timevalue
2905
2469
2906
2470
2907
def daemon(nochdir=False, noclose=False):
2471
def daemon(nochdir = False, noclose = False):
2908
2472
"""See daemon(3). Standard BSD Unix function.
2909
2473
2910
2474
This should really exist as os.daemon, but it doesn't (yet)."""
2911
2475
if os.fork():
2912
2476
sys.exit()
2930
2494
2931
2495
2932
2496
def main():
2933
2497
2934
2498
##################################################################
2935
2499
# Parsing of options, both command line and config file
2936
2500
2937
2501
parser = argparse.ArgumentParser()
2938
2502
parser.add_argument("-v", "--version", action="version",
2939
version="%(prog)s {}".format(version),
2503
version = "%(prog)s {}".format(version),
2940
2504
help="show version number and exit")
2941
2505
parser.add_argument("-i", "--interface", metavar="IF",
2942
2506
help="Bind to interface IF")
2978
2542
parser.add_argument("--no-zeroconf", action="store_false",
2979
2543
dest="zeroconf", help="Do not use Zeroconf",
2980
2544
default=None)
2981
2545
2982
2546
options = parser.parse_args()
2983
2547
2548
if options.check:
2549
import doctest
2550
fail_count, test_count = doctest.testmod()
2551
sys.exit(os.EX_OK if fail_count == 0 else 1)
2552
2984
2553
# Default values for config file for server-global settings
2985
if gnutls.has_rawpk:
2986
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
2987
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
2988
else:
2989
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2990
":+SIGN-DSA-SHA256")
2991
server_defaults = {"interface": "",
2992
"address": "",
2993
"port": "",
2994
"debug": "False",
2995
"priority": priority,
2996
"servicename": "Mandos",
2997
"use_dbus": "True",
2998
"use_ipv6": "True",
2999
"debuglevel": "",
3000
"restore": "True",
3001
"socket": "",
3002
"statedir": "/var/lib/mandos",
3003
"foreground": "False",
3004
"zeroconf": "True",
3005
}
3006
del priority
3007
2554
server_defaults = { "interface": "",
2555
"address": "",
2556
"port": "",
2557
"debug": "False",
2558
"priority":
2559
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2560
":+SIGN-DSA-SHA256",
2561
"servicename": "Mandos",
2562
"use_dbus": "True",
2563
"use_ipv6": "True",
2564
"debuglevel": "",
2565
"restore": "True",
2566
"socket": "",
2567
"statedir": "/var/lib/mandos",
2568
"foreground": "False",
2569
"zeroconf": "True",
2570
}
2571
3008
2572
# Parse config file for server-global settings
3009
server_config = configparser.ConfigParser(server_defaults)
2573
server_config = configparser.SafeConfigParser(server_defaults)
3010
2574
del server_defaults
3011
2575
server_config.read(os.path.join(options.configdir, "mandos.conf"))
3012
# Convert the ConfigParser object to a dict
2576
# Convert the SafeConfigParser object to a dict
3013
2577
server_settings = server_config.defaults()
3014
2578
# Use the appropriate methods on the non-string config options
3015
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3016
"foreground", "zeroconf"):
2579
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
3017
2580
server_settings[option] = server_config.getboolean("DEFAULT",
3018
2581
option)
3019
2582
if server_settings["port"]:
3029
2592
server_settings["socket"] = os.dup(server_settings
3030
2593
["socket"])
3031
2594
del server_config
3032
2595
3033
2596
# Override the settings from the config file with command line
3034
2597
# options, if set.
3035
2598
for option in ("interface", "address", "port", "debug",
3053
2616
if server_settings["debug"]:
3054
2617
server_settings["foreground"] = True
3055
2618
# Now we have our good server settings in "server_settings"
3056
2619
3057
2620
##################################################################
3058
2621
3059
2622
if (not server_settings["zeroconf"]
3060
2623
and not (server_settings["port"]
3061
2624
or server_settings["socket"] != "")):
3062
2625
parser.error("Needs port or socket to work without Zeroconf")
3063
2626
3064
2627
# For convenience
3065
2628
debug = server_settings["debug"]
3066
2629
debuglevel = server_settings["debuglevel"]
3070
2633
stored_state_file)
3071
2634
foreground = server_settings["foreground"]
3072
2635
zeroconf = server_settings["zeroconf"]
3073
2636
3074
2637
if debug:
3075
2638
initlogger(debug, logging.DEBUG)
3076
2639
else:
3079
2642
else:
3080
2643
level = getattr(logging, debuglevel.upper())
3081
2644
initlogger(debug, level)
3082
2645
3083
2646
if server_settings["servicename"] != "Mandos":
3084
2647
syslogger.setFormatter(
3085
2648
logging.Formatter('Mandos ({}) [%(process)d]:'
3086
2649
' %(levelname)s: %(message)s'.format(
3087
2650
server_settings["servicename"])))
3088
2651
3089
2652
# Parse config file with clients
3090
client_config = configparser.ConfigParser(Client.client_defaults)
2653
client_config = configparser.SafeConfigParser(Client
2654
.client_defaults)
3091
2655
client_config.read(os.path.join(server_settings["configdir"],
3092
2656
"clients.conf"))
3093
2657
3094
2658
global mandos_dbus_service
3095
2659
mandos_dbus_service = None
3096
2660
3097
2661
socketfd = None
3098
2662
if server_settings["socket"] != "":
3099
2663
socketfd = server_settings["socket"]
3115
2679
except IOError as e:
3116
2680
logger.error("Could not open file %r", pidfilename,
3117
2681
exc_info=e)
3118
3119
for name, group in (("_mandos", "_mandos"),
3120
("mandos", "mandos"),
3121
("nobody", "nogroup")):
2682
2683
for name in ("_mandos", "mandos", "nobody"):
3122
2684
try:
3123
2685
uid = pwd.getpwnam(name).pw_uid
3124
gid = pwd.getpwnam(group).pw_gid
2686
gid = pwd.getpwnam(name).pw_gid
3125
2687
break
3126
2688
except KeyError:
3127
2689
continue
3131
2693
try:
3132
2694
os.setgid(gid)
3133
2695
os.setuid(uid)
3134
if debug:
3135
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3136
gid))
3137
2696
except OSError as error:
3138
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3139
.format(uid, gid, os.strerror(error.errno)))
3140
2697
if error.errno != errno.EPERM:
3141
2698
raise
3142
2699
3143
2700
if debug:
3144
2701
# Enable all possible GnuTLS debugging
3145
2702
3146
2703
# "Use a log level over 10 to enable all debugging options."
3147
2704
# - GnuTLS manual
3148
gnutls.global_set_log_level(11)
3149
3150
@gnutls.log_func
2705
gnutls.library.functions.gnutls_global_set_log_level(11)
2706
2707
@gnutls.library.types.gnutls_log_func
3151
2708
def debug_gnutls(level, string):
3152
2709
logger.debug("GnuTLS: %s", string[:-1])
3153
3154
gnutls.global_set_log_function(debug_gnutls)
3155
2710
2711
gnutls.library.functions.gnutls_global_set_log_function(
2712
debug_gnutls)
2713
3156
2714
# Redirect stdin so all checkers get /dev/null
3157
2715
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
3158
2716
os.dup2(null, sys.stdin.fileno())
3159
2717
if null > 2:
3160
2718
os.close(null)
3161
2719
3162
2720
# Need to fork before connecting to D-Bus
3163
2721
if not foreground:
3164
2722
# Close all input and output, do double fork, etc.
3165
2723
daemon()
3166
3167
if gi.version_info < (3, 10, 2):
3168
# multiprocessing will use threads, so before we use GLib we
3169
# need to inform GLib that threads will be used.
3170
GLib.threads_init()
3171
2724
2725
# multiprocessing will use threads, so before we use gobject we
2726
# need to inform gobject that threads will be used.
2727
gobject.threads_init()
2728
3172
2729
global main_loop
3173
2730
# From the Avahi example code
3174
2731
DBusGMainLoop(set_as_default=True)
3175
main_loop = GLib.MainLoop()
2732
main_loop = gobject.MainLoop()
3176
2733
bus = dbus.SystemBus()
3177
2734
# End of Avahi example code
3178
2735
if use_dbus:
3191
2748
if zeroconf:
3192
2749
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3193
2750
service = AvahiServiceToSyslog(
3194
name=server_settings["servicename"],
3195
servicetype="_mandos._tcp",
3196
protocol=protocol,
3197
bus=bus)
2751
name = server_settings["servicename"],
2752
servicetype = "_mandos._tcp",
2753
protocol = protocol,
2754
bus = bus)
3198
2755
if server_settings["interface"]:
3199
2756
service.interface = if_nametoindex(
3200
2757
server_settings["interface"].encode("utf-8"))
3201
2758
3202
2759
global multiprocessing_manager
3203
2760
multiprocessing_manager = multiprocessing.Manager()
3204
2761
3205
2762
client_class = Client
3206
2763
if use_dbus:
3207
client_class = functools.partial(ClientDBus, bus=bus)
3208
2764
client_class = functools.partial(ClientDBus, bus = bus)
2765
3209
2766
client_settings = Client.config_parser(client_config)
3210
2767
old_client_settings = {}
3211
2768
clients_data = {}
3212
2769
3213
2770
# This is used to redirect stdout and stderr for checker processes
3214
2771
global wnull
3215
wnull = open(os.devnull, "w") # A writable /dev/null
2772
wnull = open(os.devnull, "w") # A writable /dev/null
3216
2773
# Only used if server is running in foreground but not in debug
3217
2774
# mode
3218
2775
if debug or not foreground:
3219
2776
wnull.close()
3220
2777
3221
2778
# Get client data and settings from last running state.
3222
2779
if server_settings["restore"]:
3223
2780
try:
3224
2781
with open(stored_state_path, "rb") as stored_state:
3225
if sys.version_info.major == 2:
3226
clients_data, old_client_settings = pickle.load(
3227
stored_state)
3228
else:
3229
bytes_clients_data, bytes_old_client_settings = (
3230
pickle.load(stored_state, encoding="bytes"))
3231
# Fix bytes to strings
3232
# clients_data
3233
# .keys()
3234
clients_data = {(key.decode("utf-8")
3235
if isinstance(key, bytes)
3236
else key): value
3237
for key, value in
3238
bytes_clients_data.items()}
3239
del bytes_clients_data
3240
for key in clients_data:
3241
value = {(k.decode("utf-8")
3242
if isinstance(k, bytes) else k): v
3243
for k, v in
3244
clients_data[key].items()}
3245
clients_data[key] = value
3246
# .client_structure
3247
value["client_structure"] = [
3248
(s.decode("utf-8")
3249
if isinstance(s, bytes)
3250
else s) for s in
3251
value["client_structure"]]
3252
# .name, .host, and .checker_command
3253
for k in ("name", "host", "checker_command"):
3254
if isinstance(value[k], bytes):
3255
value[k] = value[k].decode("utf-8")
3256
if "key_id" not in value:
3257
value["key_id"] = ""
3258
elif "fingerprint" not in value:
3259
value["fingerprint"] = ""
3260
# old_client_settings
3261
# .keys()
3262
old_client_settings = {
3263
(key.decode("utf-8")
3264
if isinstance(key, bytes)
3265
else key): value
3266
for key, value in
3267
bytes_old_client_settings.items()}
3268
del bytes_old_client_settings
3269
# .host and .checker_command
3270
for value in old_client_settings.values():
3271
for attribute in ("host", "checker_command"):
3272
if isinstance(value[attribute], bytes):
3273
value[attribute] = (value[attribute]
3274
.decode("utf-8"))
2782
clients_data, old_client_settings = pickle.load(
2783
stored_state)
3275
2784
os.remove(stored_state_path)
3276
2785
except IOError as e:
3277
2786
if e.errno == errno.ENOENT:
3285
2794
logger.warning("Could not load persistent state: "
3286
2795
"EOFError:",
3287
2796
exc_info=e)
3288
2797
3289
2798
with PGPEngine() as pgp:
3290
2799
for client_name, client in clients_data.items():
3291
2800
# Skip removed clients
3292
2801
if client_name not in client_settings:
3293
2802
continue
3294
2803
3295
2804
# Decide which value to use after restoring saved state.
3296
2805
# We have three different values: Old config file,
3297
2806
# new config file, and saved state.
3308
2817
client[name] = value
3309
2818
except KeyError:
3310
2819
pass
3311
2820
3312
2821
# Clients who has passed its expire date can still be
3313
2822
# enabled if its last checker was successful. A Client
3314
2823
# whose checker succeeded before we stored its state is
3347
2856
client_name))
3348
2857
client["secret"] = (client_settings[client_name]
3349
2858
["secret"])
3350
2859
3351
2860
# Add/remove clients based on new changes made to config
3352
2861
for client_name in (set(old_client_settings)
3353
2862
- set(client_settings)):
3355
2864
for client_name in (set(client_settings)
3356
2865
- set(old_client_settings)):
3357
2866
clients_data[client_name] = client_settings[client_name]
3358
2867
3359
2868
# Create all client objects
3360
2869
for client_name, client in clients_data.items():
3361
2870
tcp_server.clients[client_name] = client_class(
3362
name=client_name,
3363
settings=client,
3364
server_settings=server_settings)
3365
2871
name = client_name,
2872
settings = client,
2873
server_settings = server_settings)
2874
3366
2875
if not tcp_server.clients:
3367
2876
logger.warning("No clients defined")
3368
2877
3369
2878
if not foreground:
3370
2879
if pidfile is not None:
3371
2880
pid = os.getpid()
3377
2886
pidfilename, pid)
3378
2887
del pidfile
3379
2888
del pidfilename
3380
3381
for termsig in (signal.SIGHUP, signal.SIGTERM):
3382
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3383
lambda: main_loop.quit() and False)
3384
2889
2890
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2891
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2892
3385
2893
if use_dbus:
3386
2894
3387
2895
@alternate_dbus_interfaces(
3388
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
2896
{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
3389
2897
class MandosDBusService(DBusObjectWithObjectManager):
3390
2898
"""A D-Bus proxy object"""
3391
2899
3392
2900
def __init__(self):
3393
2901
dbus.service.Object.__init__(self, bus, "/")
3394
2902
3395
2903
_interface = "se.recompile.Mandos"
3396
2904
3397
2905
@dbus.service.signal(_interface, signature="o")
3398
2906
def ClientAdded(self, objpath):
3399
2907
"D-Bus signal"
3400
2908
pass
3401
2909
3402
2910
@dbus.service.signal(_interface, signature="ss")
3403
def ClientNotFound(self, key_id, address):
2911
def ClientNotFound(self, fingerprint, address):
3404
2912
"D-Bus signal"
3405
2913
pass
3406
2914
3407
2915
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3408
2916
"true"})
3409
2917
@dbus.service.signal(_interface, signature="os")
3410
2918
def ClientRemoved(self, objpath, name):
3411
2919
"D-Bus signal"
3412
2920
pass
3413
2921
3414
2922
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3415
2923
"true"})
3416
2924
@dbus.service.method(_interface, out_signature="ao")
3417
2925
def GetAllClients(self):
3418
2926
"D-Bus method"
3419
2927
return dbus.Array(c.dbus_object_path for c in
3420
tcp_server.clients.values())
3421
2928
tcp_server.clients.itervalues())
2929
3422
2930
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3423
2931
"true"})
3424
2932
@dbus.service.method(_interface,
3426
2934
def GetAllClientsWithProperties(self):
3427
2935
"D-Bus method"
3428
2936
return dbus.Dictionary(
3429
{c.dbus_object_path: c.GetAll(
2937
{ c.dbus_object_path: c.GetAll(
3430
2938
"se.recompile.Mandos.Client")
3431
for c in tcp_server.clients.values()},
2939
for c in tcp_server.clients.itervalues() },
3432
2940
signature="oa{sv}")
3433
2941
3434
2942
@dbus.service.method(_interface, in_signature="o")
3435
2943
def RemoveClient(self, object_path):
3436
2944
"D-Bus method"
3437
for c in tcp_server.clients.values():
2945
for c in tcp_server.clients.itervalues():
3438
2946
if c.dbus_object_path == object_path:
3439
2947
del tcp_server.clients[c.name]
3440
2948
c.remove_from_connection()
3444
2952
self.client_removed_signal(c)
3445
2953
return
3446
2954
raise KeyError(object_path)
3447
2955
3448
2956
del _interface
3449
2957
3450
2958
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3451
out_signature="a{oa{sa{sv}}}")
2959
out_signature = "a{oa{sa{sv}}}")
3452
2960
def GetManagedObjects(self):
3453
2961
"""D-Bus method"""
3454
2962
return dbus.Dictionary(
3455
{client.dbus_object_path:
3456
dbus.Dictionary(
3457
{interface: client.GetAll(interface)
3458
for interface in
3459
client._get_all_interface_names()})
3460
for client in tcp_server.clients.values()})
3461
2963
{ client.dbus_object_path:
2964
dbus.Dictionary(
2965
{ interface: client.GetAll(interface)
2966
for interface in
2967
client._get_all_interface_names()})
2968
for client in tcp_server.clients.values()})
2969
3462
2970
def client_added_signal(self, client):
3463
2971
"""Send the new standard signal and the old signal"""
3464
2972
if use_dbus:
3466
2974
self.InterfacesAdded(
3467
2975
client.dbus_object_path,
3468
2976
dbus.Dictionary(
3469
{interface: client.GetAll(interface)
3470
for interface in
3471
client._get_all_interface_names()}))
2977
{ interface: client.GetAll(interface)
2978
for interface in
2979
client._get_all_interface_names()}))
3472
2980
# Old signal
3473
2981
self.ClientAdded(client.dbus_object_path)
3474
2982
3475
2983
def client_removed_signal(self, client):
3476
2984
"""Send the new standard signal and the old signal"""
3477
2985
if use_dbus:
3482
2990
# Old signal
3483
2991
self.ClientRemoved(client.dbus_object_path,
3484
2992
client.name)
3485
2993
3486
2994
mandos_dbus_service = MandosDBusService()
3487
3488
# Save modules to variables to exempt the modules from being
3489
# unloaded before the function registered with atexit() is run.
3490
mp = multiprocessing
3491
wn = wnull
3492
2995
3493
2996
def cleanup():
3494
2997
"Cleanup function; run on exit"
3495
2998
if zeroconf:
3496
2999
service.cleanup()
3497
3498
mp.active_children()
3499
wn.close()
3000
3001
multiprocessing.active_children()
3002
wnull.close()
3500
3003
if not (tcp_server.clients or client_settings):
3501
3004
return
3502
3005
3503
3006
# Store client before exiting. Secrets are encrypted with key
3504
3007
# based on what config file has. If config file is
3505
3008
# removed/edited, old secret will thus be unrecovable.
3506
3009
clients = {}
3507
3010
with PGPEngine() as pgp:
3508
for client in tcp_server.clients.values():
3011
for client in tcp_server.clients.itervalues():
3509
3012
key = client_settings[client.name]["secret"]
3510
3013
client.encrypted_secret = pgp.encrypt(client.secret,
3511
3014
key)
3512
3015
client_dict = {}
3513
3016
3514
3017
# A list of attributes that can not be pickled
3515
3018
# + secret.
3516
exclude = {"bus", "changedstate", "secret",
3517
"checker", "server_settings"}
3019
exclude = { "bus", "changedstate", "secret",
3020
"checker", "server_settings" }
3518
3021
for name, typ in inspect.getmembers(dbus.service
3519
3022
.Object):
3520
3023
exclude.add(name)
3521
3024
3522
3025
client_dict["encrypted_secret"] = (client
3523
3026
.encrypted_secret)
3524
3027
for attr in client.client_structure:
3525
3028
if attr not in exclude:
3526
3029
client_dict[attr] = getattr(client, attr)
3527
3030
3528
3031
clients[client.name] = client_dict
3529
3032
del client_settings[client.name]["secret"]
3530
3033
3531
3034
try:
3532
3035
with tempfile.NamedTemporaryFile(
3533
3036
mode='wb',
3535
3038
prefix='clients-',
3536
3039
dir=os.path.dirname(stored_state_path),
3537
3040
delete=False) as stored_state:
3538
pickle.dump((clients, client_settings), stored_state,
3539
protocol=2)
3041
pickle.dump((clients, client_settings), stored_state)
3540
3042
tempname = stored_state.name
3541
3043
os.rename(tempname, stored_state_path)
3542
3044
except (IOError, OSError) as e:
3552
3054
logger.warning("Could not save persistent state:",
3553
3055
exc_info=e)
3554
3056
raise
3555
3057
3556
3058
# Delete all clients, and settings from config
3557
3059
while tcp_server.clients:
3558
3060
name, client = tcp_server.clients.popitem()
3564
3066
if use_dbus:
3565
3067
mandos_dbus_service.client_removed_signal(client)
3566
3068
client_settings.clear()
3567
3069
3568
3070
atexit.register(cleanup)
3569
3570
for client in tcp_server.clients.values():
3071
3072
for client in tcp_server.clients.itervalues():
3571
3073
if use_dbus:
3572
3074
# Emit D-Bus signal for adding
3573
3075
mandos_dbus_service.client_added_signal(client)
3574
3076
# Need to initiate checking of clients
3575
3077
if client.enabled:
3576
3078
client.init_checker()
3577
3079
3578
3080
tcp_server.enable()
3579
3081
tcp_server.server_activate()
3580
3082
3581
3083
# Find out what port we got
3582
3084
if zeroconf:
3583
3085
service.port = tcp_server.socket.getsockname()[1]
3588
3090
else: # IPv4
3589
3091
logger.info("Now listening on address %r, port %d",
3590
3092
*tcp_server.socket.getsockname())
3591
3592
# service.interface = tcp_server.socket.getsockname()[3]
3593
3093
3094
#service.interface = tcp_server.socket.getsockname()[3]
3095
3594
3096
try:
3595
3097
if zeroconf:
3596
3098
# From the Avahi example code
3601
3103
cleanup()
3602
3104
sys.exit(1)
3603
3105
# End of Avahi example code
3604
3605
GLib.io_add_watch(
3606
GLib.IOChannel.unix_new(tcp_server.fileno()),
3607
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
3608
lambda *args, **kwargs: (tcp_server.handle_request
3609
(*args[2:], **kwargs) or True))
3610
3106
3107
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
3108
lambda *args, **kwargs:
3109
(tcp_server.handle_request
3110
(*args[2:], **kwargs) or True))
3111
3611
3112
logger.debug("Starting main loop")
3612
3113
main_loop.run()
3613
3114
except AvahiError as error:
3622
3123
# Must run before the D-Bus bus name gets deregistered
3623
3124
cleanup()
3624
3125
3625
3626
def should_only_run_tests():
3627
parser = argparse.ArgumentParser(add_help=False)
3628
parser.add_argument("--check", action='store_true')
3629
args, unknown_args = parser.parse_known_args()
3630
run_tests = args.check
3631
if run_tests:
3632
# Remove --check argument from sys.argv
3633
sys.argv[1:] = unknown_args
3634
return run_tests
3635
3636
# Add all tests from doctest strings
3637
def load_tests(loader, tests, none):
3638
import doctest
3639
tests.addTests(doctest.DocTestSuite())
3640
return tests
3641
3126
3642
3127
if __name__ == '__main__':
3643
try:
3644
if should_only_run_tests():
3645
# Call using ./mandos --check [--verbose]
3646
unittest.main()
3647
else:
3648
main()
3649
finally:
3650
logging.shutdown()
3128
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0