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- Committer: Björn Påhlsson
- Date: 2011-11-11 14:14:24 UTC
- mto: (518.2.5 persistent-state-gpgme)
- mto: This revision was merged to the branch mainline in revision 524.
- Revision ID: belorn@fukt.bsnet.se-20111111141424-405blpt3kwrla6lw
new signal: NewRequest(IP_address)
Sent when a client ask for its password
Sent when a client ask for its password
- files added:
- initramfs-tools-hook-conf
- files removed:
- bugs.xml
- debian/tests
- debian/upstream
- dracut-module
- network-hooks.d
- plugin-helpers
- files modified:
- .bzrignore
added
removed
mandos
1
1
#!/usr/bin/python
2
2
# -*- mode: python; coding: utf-8 -*-
3
#
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 © 2008-2011 Teddy Hogeborn
15
# Copyright © 2008-2011 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
42
43
try:
44
import SocketServer as socketserver
45
except ImportError:
46
import socketserver
37
import SocketServer as socketserver
47
38
import socket
48
39
import argparse
49
40
import datetime
50
41
import errno
51
try:
52
import ConfigParser as configparser
53
except ImportError:
54
import configparser
42
import gnutls.crypto
43
import gnutls.connection
44
import gnutls.errors
45
import gnutls.library.functions
46
import gnutls.library.constants
47
import gnutls.library.types
48
import ConfigParser as configparser
55
49
import sys
56
50
import re
57
51
import os
66
60
import struct
67
61
import fcntl
68
62
import functools
69
try:
70
import cPickle as pickle
71
except ImportError:
72
import pickle
63
import cPickle as pickle
73
64
import multiprocessing
74
65
import types
75
import binascii
76
import tempfile
77
import itertools
78
import collections
79
import codecs
66
import hashlib
80
67
81
68
import dbus
82
69
import dbus.service
83
import gi
84
from gi.repository import GLib
70
import gobject
71
import avahi
85
72
from dbus.mainloop.glib import DBusGMainLoop
86
73
import ctypes
87
74
import ctypes.util
88
75
import xml.dom.minidom
89
76
import inspect
90
91
if sys.version_info.major == 2:
92
__metaclass__ = type
93
94
# Try to find the value of SO_BINDTODEVICE:
77
import Crypto.Cipher.AES
78
95
79
try:
96
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
97
# newer, and it is also the most natural place for it:
98
80
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
99
81
except AttributeError:
100
82
try:
101
# This is where SO_BINDTODEVICE was up to and including Python
102
# 2.6, and also 3.2:
103
83
from IN import SO_BINDTODEVICE
104
84
except ImportError:
105
# In Python 2.7 it seems to have been removed entirely.
106
# Try running the C preprocessor:
107
try:
108
cc = subprocess.Popen(["cc", "--language=c", "-E",
109
"/dev/stdin"],
110
stdin=subprocess.PIPE,
111
stdout=subprocess.PIPE)
112
stdout = cc.communicate(
113
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
114
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
115
except (OSError, ValueError, IndexError):
116
# No value found
117
SO_BINDTODEVICE = None
118
119
if sys.version_info.major == 2:
120
str = unicode
121
122
if sys.version_info < (3, 2):
123
configparser.Configparser = configparser.SafeConfigParser
124
125
version = "1.8.7"
126
stored_state_file = "clients.pickle"
85
SO_BINDTODEVICE = None
86
87
88
version = "1.4.1"
127
89
128
90
logger = logging.getLogger()
129
syslogger = None
130
131
try:
132
if_nametoindex = ctypes.cdll.LoadLibrary(
133
ctypes.util.find_library("c")).if_nametoindex
134
except (OSError, AttributeError):
135
136
def if_nametoindex(interface):
137
"Get an interface index the hard way, i.e. using fcntl()"
138
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
139
with contextlib.closing(socket.socket()) as s:
140
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
141
struct.pack(b"16s16x", interface))
142
interface_index = struct.unpack("I", ifreq[16:20])[0]
143
return interface_index
144
145
146
def copy_function(func):
147
"""Make a copy of a function"""
148
if sys.version_info.major == 2:
149
return types.FunctionType(func.func_code,
150
func.func_globals,
151
func.func_name,
152
func.func_defaults,
153
func.func_closure)
154
else:
155
return types.FunctionType(func.__code__,
156
func.__globals__,
157
func.__name__,
158
func.__defaults__,
159
func.__closure__)
160
161
162
def initlogger(debug, level=logging.WARNING):
163
"""init logger and add loglevel"""
164
165
global syslogger
166
syslogger = (logging.handlers.SysLogHandler(
167
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
168
address="/dev/log"))
169
syslogger.setFormatter(logging.Formatter
170
('Mandos [%(process)d]: %(levelname)s:'
171
' %(message)s'))
172
logger.addHandler(syslogger)
173
174
if debug:
175
console = logging.StreamHandler()
176
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
177
' [%(process)d]:'
178
' %(levelname)s:'
179
' %(message)s'))
180
logger.addHandler(console)
181
logger.setLevel(level)
182
183
184
class PGPError(Exception):
185
"""Exception if encryption/decryption fails"""
186
pass
187
188
189
class PGPEngine:
190
"""A simple class for OpenPGP symmetric encryption & decryption"""
191
192
def __init__(self):
193
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
194
self.gpg = "gpg"
195
try:
196
output = subprocess.check_output(["gpgconf"])
197
for line in output.splitlines():
198
name, text, path = line.split(b":")
199
if name == "gpg":
200
self.gpg = path
201
break
202
except OSError as e:
203
if e.errno != errno.ENOENT:
204
raise
205
self.gnupgargs = ['--batch',
206
'--homedir', self.tempdir,
207
'--force-mdc',
208
'--quiet']
209
# Only GPG version 1 has the --no-use-agent option.
210
if self.gpg == "gpg" or self.gpg.endswith("/gpg"):
211
self.gnupgargs.append("--no-use-agent")
212
213
def __enter__(self):
214
return self
215
216
def __exit__(self, exc_type, exc_value, traceback):
217
self._cleanup()
218
return False
219
220
def __del__(self):
221
self._cleanup()
222
223
def _cleanup(self):
224
if self.tempdir is not None:
225
# Delete contents of tempdir
226
for root, dirs, files in os.walk(self.tempdir,
227
topdown=False):
228
for filename in files:
229
os.remove(os.path.join(root, filename))
230
for dirname in dirs:
231
os.rmdir(os.path.join(root, dirname))
232
# Remove tempdir
233
os.rmdir(self.tempdir)
234
self.tempdir = None
235
236
def password_encode(self, password):
237
# Passphrase can not be empty and can not contain newlines or
238
# NUL bytes. So we prefix it and hex encode it.
239
encoded = b"mandos" + binascii.hexlify(password)
240
if len(encoded) > 2048:
241
# GnuPG can't handle long passwords, so encode differently
242
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
243
.replace(b"\n", b"\\n")
244
.replace(b"\0", b"\\x00"))
245
return encoded
246
247
def encrypt(self, data, password):
248
passphrase = self.password_encode(password)
249
with tempfile.NamedTemporaryFile(
250
dir=self.tempdir) as passfile:
251
passfile.write(passphrase)
252
passfile.flush()
253
proc = subprocess.Popen([self.gpg, '--symmetric',
254
'--passphrase-file',
255
passfile.name]
256
+ self.gnupgargs,
257
stdin=subprocess.PIPE,
258
stdout=subprocess.PIPE,
259
stderr=subprocess.PIPE)
260
ciphertext, err = proc.communicate(input=data)
261
if proc.returncode != 0:
262
raise PGPError(err)
263
return ciphertext
264
265
def decrypt(self, data, password):
266
passphrase = self.password_encode(password)
267
with tempfile.NamedTemporaryFile(
268
dir=self.tempdir) as passfile:
269
passfile.write(passphrase)
270
passfile.flush()
271
proc = subprocess.Popen([self.gpg, '--decrypt',
272
'--passphrase-file',
273
passfile.name]
274
+ self.gnupgargs,
275
stdin=subprocess.PIPE,
276
stdout=subprocess.PIPE,
277
stderr=subprocess.PIPE)
278
decrypted_plaintext, err = proc.communicate(input=data)
279
if proc.returncode != 0:
280
raise PGPError(err)
281
return decrypted_plaintext
282
283
284
# Pretend that we have an Avahi module
285
class avahi:
286
"""This isn't so much a class as it is a module-like namespace."""
287
IF_UNSPEC = -1 # avahi-common/address.h
288
PROTO_UNSPEC = -1 # avahi-common/address.h
289
PROTO_INET = 0 # avahi-common/address.h
290
PROTO_INET6 = 1 # avahi-common/address.h
291
DBUS_NAME = "org.freedesktop.Avahi"
292
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
293
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
294
DBUS_PATH_SERVER = "/"
295
296
@staticmethod
297
def string_array_to_txt_array(t):
298
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
299
for s in t), signature="ay")
300
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
301
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
302
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
303
SERVER_INVALID = 0 # avahi-common/defs.h
304
SERVER_REGISTERING = 1 # avahi-common/defs.h
305
SERVER_RUNNING = 2 # avahi-common/defs.h
306
SERVER_COLLISION = 3 # avahi-common/defs.h
307
SERVER_FAILURE = 4 # avahi-common/defs.h
91
stored_state_path = "/var/lib/mandos/clients.pickle"
92
93
syslogger = (logging.handlers.SysLogHandler
94
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
95
address = str("/dev/log")))
96
syslogger.setFormatter(logging.Formatter
97
('Mandos [%(process)d]: %(levelname)s:'
98
' %(message)s'))
99
logger.addHandler(syslogger)
100
101
console = logging.StreamHandler()
102
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
103
' [%(process)d]:'
104
' %(levelname)s:'
105
' %(message)s'))
106
logger.addHandler(console)
308
107
309
108
310
109
class AvahiError(Exception):
311
110
def __init__(self, value, *args, **kwargs):
312
111
self.value = value
313
return super(AvahiError, self).__init__(value, *args,
314
**kwargs)
315
112
super(AvahiError, self).__init__(value, *args, **kwargs)
113
def __unicode__(self):
114
return unicode(repr(self.value))
316
115
317
116
class AvahiServiceError(AvahiError):
318
117
pass
319
118
320
321
119
class AvahiGroupError(AvahiError):
322
120
pass
323
121
324
122
325
class AvahiService:
123
class AvahiService(object):
326
124
"""An Avahi (Zeroconf) service.
327
125
328
126
Attributes:
329
127
interface: integer; avahi.IF_UNSPEC or an interface index.
330
128
Used to optionally bind to the specified interface.
331
129
name: string; Example: 'Mandos'
332
130
type: string; Example: '_mandos._tcp'.
333
See <https://www.iana.org/assignments/service-names-port-numbers>
131
See <http://www.dns-sd.org/ServiceTypes.html>
334
132
port: integer; what port to announce
335
133
TXT: list of strings; TXT record for the service
336
134
domain: string; Domain to publish on, default to .local if empty.
342
140
server: D-Bus Server
343
141
bus: dbus.SystemBus()
344
142
"""
345
346
def __init__(self,
347
interface=avahi.IF_UNSPEC,
348
name=None,
349
servicetype=None,
350
port=None,
351
TXT=None,
352
domain="",
353
host="",
354
max_renames=32768,
355
protocol=avahi.PROTO_UNSPEC,
356
bus=None):
143
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
144
servicetype = None, port = None, TXT = None,
145
domain = "", host = "", max_renames = 32768,
146
protocol = avahi.PROTO_UNSPEC, bus = None):
357
147
self.interface = interface
358
148
self.name = name
359
149
self.type = servicetype
368
158
self.server = None
369
159
self.bus = bus
370
160
self.entry_group_state_changed_match = None
371
372
def rename(self, remove=True):
161
def rename(self):
373
162
"""Derived from the Avahi example code"""
374
163
if self.rename_count >= self.max_renames:
375
164
logger.critical("No suitable Zeroconf service name found"
376
165
" after %i retries, exiting.",
377
166
self.rename_count)
378
167
raise AvahiServiceError("Too many renames")
379
self.name = str(
380
self.server.GetAlternativeServiceName(self.name))
381
self.rename_count += 1
168
self.name = unicode(self.server
169
.GetAlternativeServiceName(self.name))
382
170
logger.info("Changing Zeroconf service name to %r ...",
383
171
self.name)
384
if remove:
385
self.remove()
172
self.remove()
386
173
try:
387
174
self.add()
388
175
except dbus.exceptions.DBusException as error:
389
if (error.get_dbus_name()
390
== "org.freedesktop.Avahi.CollisionError"):
391
logger.info("Local Zeroconf service name collision.")
392
return self.rename(remove=False)
393
else:
394
logger.critical("D-Bus Exception", exc_info=error)
395
self.cleanup()
396
os._exit(1)
397
176
logger.critical("DBusException: %s", error)
177
self.cleanup()
178
os._exit(1)
179
self.rename_count += 1
398
180
def remove(self):
399
181
"""Derived from the Avahi example code"""
400
182
if self.entry_group_state_changed_match is not None:
402
184
self.entry_group_state_changed_match = None
403
185
if self.group is not None:
404
186
self.group.Reset()
405
406
187
def add(self):
407
188
"""Derived from the Avahi example code"""
408
189
self.remove()
425
206
dbus.UInt16(self.port),
426
207
avahi.string_array_to_txt_array(self.TXT))
427
208
self.group.Commit()
428
429
209
def entry_group_state_changed(self, state, error):
430
210
"""Derived from the Avahi example code"""
431
211
logger.debug("Avahi entry group state change: %i", state)
432
212
433
213
if state == avahi.ENTRY_GROUP_ESTABLISHED:
434
214
logger.debug("Zeroconf service established.")
435
215
elif state == avahi.ENTRY_GROUP_COLLISION:
437
217
self.rename()
438
218
elif state == avahi.ENTRY_GROUP_FAILURE:
439
219
logger.critical("Avahi: Error in group state changed %s",
440
str(error))
441
raise AvahiGroupError("State changed: {!s}".format(error))
442
220
unicode(error))
221
raise AvahiGroupError("State changed: %s"
222
% unicode(error))
443
223
def cleanup(self):
444
224
"""Derived from the Avahi example code"""
445
225
if self.group is not None:
446
226
try:
447
227
self.group.Free()
448
228
except (dbus.exceptions.UnknownMethodException,
449
dbus.exceptions.DBusException):
229
dbus.exceptions.DBusException) as e:
450
230
pass
451
231
self.group = None
452
232
self.remove()
453
454
233
def server_state_changed(self, state, error=None):
455
234
"""Derived from the Avahi example code"""
456
235
logger.debug("Avahi server state change: %i", state)
457
bad_states = {
458
avahi.SERVER_INVALID: "Zeroconf server invalid",
459
avahi.SERVER_REGISTERING: None,
460
avahi.SERVER_COLLISION: "Zeroconf server name collision",
461
avahi.SERVER_FAILURE: "Zeroconf server failure",
462
}
236
bad_states = { avahi.SERVER_INVALID:
237
"Zeroconf server invalid",
238
avahi.SERVER_REGISTERING: None,
239
avahi.SERVER_COLLISION:
240
"Zeroconf server name collision",
241
avahi.SERVER_FAILURE:
242
"Zeroconf server failure" }
463
243
if state in bad_states:
464
244
if bad_states[state] is not None:
465
245
if error is None:
468
248
logger.error(bad_states[state] + ": %r", error)
469
249
self.cleanup()
470
250
elif state == avahi.SERVER_RUNNING:
471
try:
472
self.add()
473
except dbus.exceptions.DBusException as error:
474
if (error.get_dbus_name()
475
== "org.freedesktop.Avahi.CollisionError"):
476
logger.info("Local Zeroconf service name"
477
" collision.")
478
return self.rename(remove=False)
479
else:
480
logger.critical("D-Bus Exception", exc_info=error)
481
self.cleanup()
482
os._exit(1)
251
self.add()
483
252
else:
484
253
if error is None:
485
254
logger.debug("Unknown state: %r", state)
486
255
else:
487
256
logger.debug("Unknown state: %r: %r", state, error)
488
489
257
def activate(self):
490
258
"""Derived from the Avahi example code"""
491
259
if self.server is None:
495
263
follow_name_owner_changes=True),
496
264
avahi.DBUS_INTERFACE_SERVER)
497
265
self.server.connect_to_signal("StateChanged",
498
self.server_state_changed)
266
self.server_state_changed)
499
267
self.server_state_changed(self.server.GetState())
500
268
501
502
269
class AvahiServiceToSyslog(AvahiService):
503
def rename(self, *args, **kwargs):
270
def rename(self):
504
271
"""Add the new name to the syslog messages"""
505
ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
506
syslogger.setFormatter(logging.Formatter(
507
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
508
.format(self.name)))
272
ret = AvahiService.rename(self)
273
syslogger.setFormatter(logging.Formatter
274
('Mandos (%s) [%%(process)d]:'
275
' %%(levelname)s: %%(message)s'
276
% self.name))
509
277
return ret
510
278
511
512
# Pretend that we have a GnuTLS module
513
class gnutls:
514
"""This isn't so much a class as it is a module-like namespace."""
515
516
library = ctypes.util.find_library("gnutls")
517
if library is None:
518
library = ctypes.util.find_library("gnutls-deb0")
519
_library = ctypes.cdll.LoadLibrary(library)
520
del library
521
522
# Unless otherwise indicated, the constants and types below are
523
# all from the gnutls/gnutls.h C header file.
524
525
# Constants
526
E_SUCCESS = 0
527
E_INTERRUPTED = -52
528
E_AGAIN = -28
529
CRT_OPENPGP = 2
530
CRT_RAWPK = 3
531
CLIENT = 2
532
SHUT_RDWR = 0
533
CRD_CERTIFICATE = 1
534
E_NO_CERTIFICATE_FOUND = -49
535
X509_FMT_DER = 0
536
NO_TICKETS = 1<<10
537
ENABLE_RAWPK = 1<<18
538
CTYPE_PEERS = 3
539
KEYID_USE_SHA256 = 1 # gnutls/x509.h
540
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
541
542
# Types
543
class session_int(ctypes.Structure):
544
_fields_ = []
545
session_t = ctypes.POINTER(session_int)
546
547
class certificate_credentials_st(ctypes.Structure):
548
_fields_ = []
549
certificate_credentials_t = ctypes.POINTER(
550
certificate_credentials_st)
551
certificate_type_t = ctypes.c_int
552
553
class datum_t(ctypes.Structure):
554
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
555
('size', ctypes.c_uint)]
556
557
class openpgp_crt_int(ctypes.Structure):
558
_fields_ = []
559
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
560
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
561
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
562
credentials_type_t = ctypes.c_int
563
transport_ptr_t = ctypes.c_void_p
564
close_request_t = ctypes.c_int
565
566
# Exceptions
567
class Error(Exception):
568
def __init__(self, message=None, code=None, args=()):
569
# Default usage is by a message string, but if a return
570
# code is passed, convert it to a string with
571
# gnutls.strerror()
572
self.code = code
573
if message is None and code is not None:
574
message = gnutls.strerror(code)
575
return super(gnutls.Error, self).__init__(
576
message, *args)
577
578
class CertificateSecurityError(Error):
579
pass
580
581
# Classes
582
class Credentials:
583
def __init__(self):
584
self._c_object = gnutls.certificate_credentials_t()
585
gnutls.certificate_allocate_credentials(
586
ctypes.byref(self._c_object))
587
self.type = gnutls.CRD_CERTIFICATE
588
589
def __del__(self):
590
gnutls.certificate_free_credentials(self._c_object)
591
592
class ClientSession:
593
def __init__(self, socket, credentials=None):
594
self._c_object = gnutls.session_t()
595
gnutls_flags = gnutls.CLIENT
596
if gnutls.check_version(b"3.5.6"):
597
gnutls_flags |= gnutls.NO_TICKETS
598
if gnutls.has_rawpk:
599
gnutls_flags |= gnutls.ENABLE_RAWPK
600
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
601
del gnutls_flags
602
gnutls.set_default_priority(self._c_object)
603
gnutls.transport_set_ptr(self._c_object, socket.fileno())
604
gnutls.handshake_set_private_extensions(self._c_object,
605
True)
606
self.socket = socket
607
if credentials is None:
608
credentials = gnutls.Credentials()
609
gnutls.credentials_set(self._c_object, credentials.type,
610
ctypes.cast(credentials._c_object,
611
ctypes.c_void_p))
612
self.credentials = credentials
613
614
def __del__(self):
615
gnutls.deinit(self._c_object)
616
617
def handshake(self):
618
return gnutls.handshake(self._c_object)
619
620
def send(self, data):
621
data = bytes(data)
622
data_len = len(data)
623
while data_len > 0:
624
data_len -= gnutls.record_send(self._c_object,
625
data[-data_len:],
626
data_len)
627
628
def bye(self):
629
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
630
631
# Error handling functions
632
def _error_code(result):
633
"""A function to raise exceptions on errors, suitable
634
for the 'restype' attribute on ctypes functions"""
635
if result >= 0:
636
return result
637
if result == gnutls.E_NO_CERTIFICATE_FOUND:
638
raise gnutls.CertificateSecurityError(code=result)
639
raise gnutls.Error(code=result)
640
641
def _retry_on_error(result, func, arguments):
642
"""A function to retry on some errors, suitable
643
for the 'errcheck' attribute on ctypes functions"""
644
while result < 0:
645
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
646
return _error_code(result)
647
result = func(*arguments)
648
return result
649
650
# Unless otherwise indicated, the function declarations below are
651
# all from the gnutls/gnutls.h C header file.
652
653
# Functions
654
priority_set_direct = _library.gnutls_priority_set_direct
655
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
656
ctypes.POINTER(ctypes.c_char_p)]
657
priority_set_direct.restype = _error_code
658
659
init = _library.gnutls_init
660
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
661
init.restype = _error_code
662
663
set_default_priority = _library.gnutls_set_default_priority
664
set_default_priority.argtypes = [session_t]
665
set_default_priority.restype = _error_code
666
667
record_send = _library.gnutls_record_send
668
record_send.argtypes = [session_t, ctypes.c_void_p,
669
ctypes.c_size_t]
670
record_send.restype = ctypes.c_ssize_t
671
record_send.errcheck = _retry_on_error
672
673
certificate_allocate_credentials = (
674
_library.gnutls_certificate_allocate_credentials)
675
certificate_allocate_credentials.argtypes = [
676
ctypes.POINTER(certificate_credentials_t)]
677
certificate_allocate_credentials.restype = _error_code
678
679
certificate_free_credentials = (
680
_library.gnutls_certificate_free_credentials)
681
certificate_free_credentials.argtypes = [
682
certificate_credentials_t]
683
certificate_free_credentials.restype = None
684
685
handshake_set_private_extensions = (
686
_library.gnutls_handshake_set_private_extensions)
687
handshake_set_private_extensions.argtypes = [session_t,
688
ctypes.c_int]
689
handshake_set_private_extensions.restype = None
690
691
credentials_set = _library.gnutls_credentials_set
692
credentials_set.argtypes = [session_t, credentials_type_t,
693
ctypes.c_void_p]
694
credentials_set.restype = _error_code
695
696
strerror = _library.gnutls_strerror
697
strerror.argtypes = [ctypes.c_int]
698
strerror.restype = ctypes.c_char_p
699
700
certificate_type_get = _library.gnutls_certificate_type_get
701
certificate_type_get.argtypes = [session_t]
702
certificate_type_get.restype = _error_code
703
704
certificate_get_peers = _library.gnutls_certificate_get_peers
705
certificate_get_peers.argtypes = [session_t,
706
ctypes.POINTER(ctypes.c_uint)]
707
certificate_get_peers.restype = ctypes.POINTER(datum_t)
708
709
global_set_log_level = _library.gnutls_global_set_log_level
710
global_set_log_level.argtypes = [ctypes.c_int]
711
global_set_log_level.restype = None
712
713
global_set_log_function = _library.gnutls_global_set_log_function
714
global_set_log_function.argtypes = [log_func]
715
global_set_log_function.restype = None
716
717
deinit = _library.gnutls_deinit
718
deinit.argtypes = [session_t]
719
deinit.restype = None
720
721
handshake = _library.gnutls_handshake
722
handshake.argtypes = [session_t]
723
handshake.restype = _error_code
724
handshake.errcheck = _retry_on_error
725
726
transport_set_ptr = _library.gnutls_transport_set_ptr
727
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
728
transport_set_ptr.restype = None
729
730
bye = _library.gnutls_bye
731
bye.argtypes = [session_t, close_request_t]
732
bye.restype = _error_code
733
bye.errcheck = _retry_on_error
734
735
check_version = _library.gnutls_check_version
736
check_version.argtypes = [ctypes.c_char_p]
737
check_version.restype = ctypes.c_char_p
738
739
_need_version = b"3.3.0"
740
if check_version(_need_version) is None:
741
raise self.Error("Needs GnuTLS {} or later"
742
.format(_need_version))
743
744
_tls_rawpk_version = b"3.6.6"
745
has_rawpk = bool(check_version(_tls_rawpk_version))
746
747
if has_rawpk:
748
# Types
749
class pubkey_st(ctypes.Structure):
750
_fields = []
751
pubkey_t = ctypes.POINTER(pubkey_st)
752
753
x509_crt_fmt_t = ctypes.c_int
754
755
# All the function declarations below are from gnutls/abstract.h
756
pubkey_init = _library.gnutls_pubkey_init
757
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
758
pubkey_init.restype = _error_code
759
760
pubkey_import = _library.gnutls_pubkey_import
761
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
762
x509_crt_fmt_t]
763
pubkey_import.restype = _error_code
764
765
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
766
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
767
ctypes.POINTER(ctypes.c_ubyte),
768
ctypes.POINTER(ctypes.c_size_t)]
769
pubkey_get_key_id.restype = _error_code
770
771
pubkey_deinit = _library.gnutls_pubkey_deinit
772
pubkey_deinit.argtypes = [pubkey_t]
773
pubkey_deinit.restype = None
774
else:
775
# All the function declarations below are from gnutls/openpgp.h
776
777
openpgp_crt_init = _library.gnutls_openpgp_crt_init
778
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
779
openpgp_crt_init.restype = _error_code
780
781
openpgp_crt_import = _library.gnutls_openpgp_crt_import
782
openpgp_crt_import.argtypes = [openpgp_crt_t,
783
ctypes.POINTER(datum_t),
784
openpgp_crt_fmt_t]
785
openpgp_crt_import.restype = _error_code
786
787
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
788
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
789
ctypes.POINTER(ctypes.c_uint)]
790
openpgp_crt_verify_self.restype = _error_code
791
792
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
793
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
794
openpgp_crt_deinit.restype = None
795
796
openpgp_crt_get_fingerprint = (
797
_library.gnutls_openpgp_crt_get_fingerprint)
798
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
799
ctypes.c_void_p,
800
ctypes.POINTER(
801
ctypes.c_size_t)]
802
openpgp_crt_get_fingerprint.restype = _error_code
803
804
if check_version(b"3.6.4"):
805
certificate_type_get2 = _library.gnutls_certificate_type_get2
806
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
807
certificate_type_get2.restype = _error_code
808
809
# Remove non-public functions
810
del _error_code, _retry_on_error
811
812
813
def call_pipe(connection, # : multiprocessing.Connection
814
func, *args, **kwargs):
815
"""This function is meant to be called by multiprocessing.Process
816
817
This function runs func(*args, **kwargs), and writes the resulting
818
return value on the provided multiprocessing.Connection.
819
"""
820
connection.send(func(*args, **kwargs))
821
connection.close()
822
823
824
class Client:
279
def _timedelta_to_milliseconds(td):
280
"Convert a datetime.timedelta() to milliseconds"
281
return ((td.days * 24 * 60 * 60 * 1000)
282
+ (td.seconds * 1000)
283
+ (td.microseconds // 1000))
284
285
class Client(object):
825
286
"""A representation of a client host served by this server.
826
287
827
288
Attributes:
828
approved: bool(); 'None' if not yet approved/disapproved
289
_approved: bool(); 'None' if not yet approved/disapproved
829
290
approval_delay: datetime.timedelta(); Time to wait for approval
830
291
approval_duration: datetime.timedelta(); Duration of one approval
831
checker: multiprocessing.Process(); a running checker process used
832
to see if the client lives. 'None' if no process is
833
running.
834
checker_callback_tag: a GLib event source tag, or None
292
checker: subprocess.Popen(); a running checker process used
293
to see if the client lives.
294
'None' if no process is running.
295
checker_callback_tag: a gobject event source tag, or None
835
296
checker_command: string; External command which is run to check
836
297
if client lives. %() expansions are done at
837
298
runtime with vars(self) as dict, so that for
838
299
instance %(name)s can be used in the command.
839
checker_initiator_tag: a GLib event source tag, or None
300
checker_initiator_tag: a gobject event source tag, or None
840
301
created: datetime.datetime(); (UTC) object creation
841
302
client_structure: Object describing what attributes a client has
842
303
and is used for storing the client at exit
843
304
current_checker_command: string; current running checker_command
844
disable_initiator_tag: a GLib event source tag, or None
305
disable_initiator_tag: a gobject event source tag, or None
845
306
enabled: bool()
846
307
fingerprint: string (40 or 32 hexadecimal digits); used to
847
uniquely identify an OpenPGP client
848
key_id: string (64 hexadecimal digits); used to uniquely identify
849
a client using raw public keys
308
uniquely identify the client
850
309
host: string; available for use by the checker command
851
310
interval: datetime.timedelta(); How often to start a new checker
852
311
last_approval_request: datetime.datetime(); (UTC) or None
853
312
last_checked_ok: datetime.datetime(); (UTC) or None
854
last_checker_status: integer between 0 and 255 reflecting exit
855
status of last checker. -1 reflects crashed
856
checker, -2 means no checker completed yet.
857
last_checker_signal: The signal which killed the last checker, if
858
last_checker_status is -1
859
last_enabled: datetime.datetime(); (UTC) or None
313
last_checker_status: integer between 0 and 255 reflecting exit status
314
of last checker. -1 reflect crashed checker,
315
or None.
316
last_enabled: datetime.datetime(); (UTC)
860
317
name: string; from the config file, used in log messages and
861
318
D-Bus identifiers
862
319
secret: bytestring; sent verbatim (over TLS) to client
863
320
timeout: datetime.timedelta(); How long from last_checked_ok
864
321
until this client is disabled
865
extended_timeout: extra long timeout when secret has been sent
322
extended_timeout: extra long timeout when password has been sent
866
323
runtime_expansions: Allowed attributes for runtime expansion.
867
324
expires: datetime.datetime(); time (UTC) when a client will be
868
325
disabled, or None
869
server_settings: The server_settings dict from main()
870
326
"""
871
327
872
328
runtime_expansions = ("approval_delay", "approval_duration",
873
"created", "enabled", "expires", "key_id",
874
"fingerprint", "host", "interval",
875
"last_approval_request", "last_checked_ok",
329
"created", "enabled", "fingerprint",
330
"host", "interval", "last_checked_ok",
876
331
"last_enabled", "name", "timeout")
877
client_defaults = {
878
"timeout": "PT5M",
879
"extended_timeout": "PT15M",
880
"interval": "PT2M",
881
"checker": "fping -q -- %%(host)s",
882
"host": "",
883
"approval_delay": "PT0S",
884
"approval_duration": "PT1S",
885
"approved_by_default": "True",
886
"enabled": "True",
887
}
888
889
@staticmethod
890
def config_parser(config):
891
"""Construct a new dict of client settings of this form:
892
{ client_name: {setting_name: value, ...}, ...}
893
with exceptions for any special settings as defined above.
894
NOTE: Must be a pure function. Must return the same result
895
value given the same arguments.
896
"""
897
settings = {}
898
for client_name in config.sections():
899
section = dict(config.items(client_name))
900
client = settings[client_name] = {}
901
902
client["host"] = section["host"]
903
# Reformat values from string types to Python types
904
client["approved_by_default"] = config.getboolean(
905
client_name, "approved_by_default")
906
client["enabled"] = config.getboolean(client_name,
907
"enabled")
908
909
# Uppercase and remove spaces from key_id and fingerprint
910
# for later comparison purposes with return value from the
911
# key_id() and fingerprint() functions
912
client["key_id"] = (section.get("key_id", "").upper()
913
.replace(" ", ""))
914
client["fingerprint"] = (section["fingerprint"].upper()
915
.replace(" ", ""))
916
if "secret" in section:
917
client["secret"] = codecs.decode(section["secret"]
918
.encode("utf-8"),
919
"base64")
920
elif "secfile" in section:
921
with open(os.path.expanduser(os.path.expandvars
922
(section["secfile"])),
923
"rb") as secfile:
924
client["secret"] = secfile.read()
925
else:
926
raise TypeError("No secret or secfile for section {}"
927
.format(section))
928
client["timeout"] = string_to_delta(section["timeout"])
929
client["extended_timeout"] = string_to_delta(
930
section["extended_timeout"])
931
client["interval"] = string_to_delta(section["interval"])
932
client["approval_delay"] = string_to_delta(
933
section["approval_delay"])
934
client["approval_duration"] = string_to_delta(
935
section["approval_duration"])
936
client["checker_command"] = section["checker"]
937
client["last_approval_request"] = None
938
client["last_checked_ok"] = None
939
client["last_checker_status"] = -2
940
941
return settings
942
943
def __init__(self, settings, name=None, server_settings=None):
332
333
def timeout_milliseconds(self):
334
"Return the 'timeout' attribute in milliseconds"
335
return _timedelta_to_milliseconds(self.timeout)
336
337
def extended_timeout_milliseconds(self):
338
"Return the 'extended_timeout' attribute in milliseconds"
339
return _timedelta_to_milliseconds(self.extended_timeout)
340
341
def interval_milliseconds(self):
342
"Return the 'interval' attribute in milliseconds"
343
return _timedelta_to_milliseconds(self.interval)
344
345
def approval_delay_milliseconds(self):
346
return _timedelta_to_milliseconds(self.approval_delay)
347
348
def __init__(self, name = None, config=None):
349
"""Note: the 'checker' key in 'config' sets the
350
'checker_command' attribute and *not* the 'checker'
351
attribute."""
944
352
self.name = name
945
if server_settings is None:
946
server_settings = {}
947
self.server_settings = server_settings
948
# adding all client settings
949
for setting, value in settings.items():
950
setattr(self, setting, value)
951
952
if self.enabled:
953
if not hasattr(self, "last_enabled"):
954
self.last_enabled = datetime.datetime.utcnow()
955
if not hasattr(self, "expires"):
956
self.expires = (datetime.datetime.utcnow()
957
+ self.timeout)
958
else:
959
self.last_enabled = None
960
self.expires = None
961
353
if config is None:
354
config = {}
962
355
logger.debug("Creating client %r", self.name)
963
logger.debug(" Key ID: %s", self.key_id)
356
# Uppercase and remove spaces from fingerprint for later
357
# comparison purposes with return value from the fingerprint()
358
# function
359
self.fingerprint = (config["fingerprint"].upper()
360
.replace(" ", ""))
964
361
logger.debug(" Fingerprint: %s", self.fingerprint)
965
self.created = settings.get("created",
966
datetime.datetime.utcnow())
967
968
# attributes specific for this server instance
362
if "secret" in config:
363
self.secret = config["secret"].decode("base64")
364
elif "secfile" in config:
365
with open(os.path.expanduser(os.path.expandvars
366
(config["secfile"])),
367
"rb") as secfile:
368
self.secret = secfile.read()
369
else:
370
raise TypeError("No secret or secfile for client %s"
371
% self.name)
372
self.host = config.get("host", "")
373
self.created = datetime.datetime.utcnow()
374
self.enabled = True
375
self.last_approval_request = None
376
self.last_enabled = datetime.datetime.utcnow()
377
self.last_checked_ok = None
378
self.last_checker_status = None
379
self.timeout = string_to_delta(config["timeout"])
380
self.extended_timeout = string_to_delta(config
381
["extended_timeout"])
382
self.interval = string_to_delta(config["interval"])
969
383
self.checker = None
970
384
self.checker_initiator_tag = None
971
385
self.disable_initiator_tag = None
386
self.expires = datetime.datetime.utcnow() + self.timeout
972
387
self.checker_callback_tag = None
388
self.checker_command = config["checker"]
973
389
self.current_checker_command = None
974
self.approved = None
390
self._approved = None
391
self.approved_by_default = config.get("approved_by_default",
392
True)
975
393
self.approvals_pending = 0
976
self.changedstate = multiprocessing_manager.Condition(
977
multiprocessing_manager.Lock())
978
self.client_structure = [attr
979
for attr in self.__dict__.keys()
980
if not attr.startswith("_")]
394
self.approval_delay = string_to_delta(
395
config["approval_delay"])
396
self.approval_duration = string_to_delta(
397
config["approval_duration"])
398
self.changedstate = (multiprocessing_manager
399
.Condition(multiprocessing_manager
400
.Lock()))
401
self.client_structure = [attr for attr in self.__dict__.iterkeys() if not attr.startswith("_")]
981
402
self.client_structure.append("client_structure")
982
403
983
for name, t in inspect.getmembers(
984
type(self), lambda obj: isinstance(obj, property)):
404
405
for name, t in inspect.getmembers(type(self),
406
lambda obj: isinstance(obj, property)):
985
407
if not name.startswith("_"):
986
408
self.client_structure.append(name)
987
409
988
410
# Send notice to process children that client state has changed
989
411
def send_changedstate(self):
990
412
with self.changedstate:
991
413
self.changedstate.notify_all()
992
414
993
415
def enable(self):
994
416
"""Start this client's checker and timeout hooks"""
995
417
if getattr(self, "enabled", False):
996
418
# Already enabled
997
419
return
420
self.send_changedstate()
998
421
self.expires = datetime.datetime.utcnow() + self.timeout
999
422
self.enabled = True
1000
423
self.last_enabled = datetime.datetime.utcnow()
1001
424
self.init_checker()
1002
self.send_changedstate()
1003
425
1004
426
def disable(self, quiet=True):
1005
427
"""Disable this client."""
1006
428
if not getattr(self, "enabled", False):
1007
429
return False
1008
430
if not quiet:
431
self.send_changedstate()
432
if not quiet:
1009
433
logger.info("Disabling client %s", self.name)
1010
if getattr(self, "disable_initiator_tag", None) is not None:
1011
GLib.source_remove(self.disable_initiator_tag)
434
if getattr(self, "disable_initiator_tag", False):
435
gobject.source_remove(self.disable_initiator_tag)
1012
436
self.disable_initiator_tag = None
1013
437
self.expires = None
1014
if getattr(self, "checker_initiator_tag", None) is not None:
1015
GLib.source_remove(self.checker_initiator_tag)
438
if getattr(self, "checker_initiator_tag", False):
439
gobject.source_remove(self.checker_initiator_tag)
1016
440
self.checker_initiator_tag = None
1017
441
self.stop_checker()
1018
442
self.enabled = False
1019
if not quiet:
1020
self.send_changedstate()
1021
# Do not run this again if called by a GLib.timeout_add
443
# Do not run this again if called by a gobject.timeout_add
1022
444
return False
1023
445
1024
446
def __del__(self):
1025
447
self.disable()
1026
448
1027
449
def init_checker(self):
1028
450
# Schedule a new checker to be started an 'interval' from now,
1029
451
# and every interval from then on.
1030
if self.checker_initiator_tag is not None:
1031
GLib.source_remove(self.checker_initiator_tag)
1032
self.checker_initiator_tag = GLib.timeout_add(
1033
int(self.interval.total_seconds() * 1000),
1034
self.start_checker)
452
self.checker_initiator_tag = (gobject.timeout_add
453
(self.interval_milliseconds(),
454
self.start_checker))
1035
455
# Schedule a disable() when 'timeout' has passed
1036
if self.disable_initiator_tag is not None:
1037
GLib.source_remove(self.disable_initiator_tag)
1038
self.disable_initiator_tag = GLib.timeout_add(
1039
int(self.timeout.total_seconds() * 1000), self.disable)
456
self.disable_initiator_tag = (gobject.timeout_add
457
(self.timeout_milliseconds(),
458
self.disable))
1040
459
# Also start a new checker *right now*.
1041
460
self.start_checker()
1042
461
1043
def checker_callback(self, source, condition, connection,
1044
command):
462
463
def checker_callback(self, pid, condition, command):
1045
464
"""The checker has completed, so take appropriate actions."""
1046
# Read return code from connection (see call_pipe)
1047
returncode = connection.recv()
1048
connection.close()
1049
self.checker.join()
1050
465
self.checker_callback_tag = None
1051
466
self.checker = None
1052
1053
if returncode >= 0:
1054
self.last_checker_status = returncode
1055
self.last_checker_signal = None
467
if os.WIFEXITED(condition):
468
self.last_checker_status = os.WEXITSTATUS(condition)
1056
469
if self.last_checker_status == 0:
1057
470
logger.info("Checker for %(name)s succeeded",
1058
471
vars(self))
1059
472
self.checked_ok()
1060
473
else:
1061
logger.info("Checker for %(name)s failed", vars(self))
474
logger.info("Checker for %(name)s failed",
475
vars(self))
1062
476
else:
1063
477
self.last_checker_status = -1
1064
self.last_checker_signal = -returncode
1065
478
logger.warning("Checker for %(name)s crashed?",
1066
479
vars(self))
1067
return False
1068
1069
def checked_ok(self):
1070
"""Assert that the client has been seen, alive and well."""
1071
self.last_checked_ok = datetime.datetime.utcnow()
1072
self.last_checker_status = 0
1073
self.last_checker_signal = None
1074
self.bump_timeout()
1075
1076
def bump_timeout(self, timeout=None):
1077
"""Bump up the timeout for this client."""
480
481
def checked_ok(self, timeout=None):
482
"""Bump up the timeout for this client.
483
484
This should only be called when the client has been seen,
485
alive and well.
486
"""
1078
487
if timeout is None:
1079
488
timeout = self.timeout
489
self.last_checked_ok = datetime.datetime.utcnow()
1080
490
if self.disable_initiator_tag is not None:
1081
GLib.source_remove(self.disable_initiator_tag)
1082
self.disable_initiator_tag = None
491
gobject.source_remove(self.disable_initiator_tag)
1083
492
if getattr(self, "enabled", False):
1084
self.disable_initiator_tag = GLib.timeout_add(
1085
int(timeout.total_seconds() * 1000), self.disable)
493
self.disable_initiator_tag = (gobject.timeout_add
494
(_timedelta_to_milliseconds
495
(timeout), self.disable))
1086
496
self.expires = datetime.datetime.utcnow() + timeout
1087
497
1088
498
def need_approval(self):
1089
499
self.last_approval_request = datetime.datetime.utcnow()
1090
500
1091
501
def start_checker(self):
1092
502
"""Start a new checker subprocess if one is not running.
1093
503
1094
504
If a checker already exists, leave it running and do
1095
505
nothing."""
1096
506
# The reason for not killing a running checker is that if we
1097
# did that, and if a checker (for some reason) started running
1098
# slowly and taking more than 'interval' time, then the client
1099
# would inevitably timeout, since no checker would get a
1100
# chance to run to completion. If we instead leave running
507
# did that, then if a checker (for some reason) started
508
# running slowly and taking more than 'interval' time, the
509
# client would inevitably timeout, since no checker would get
510
# a chance to run to completion. If we instead leave running
1101
511
# checkers alone, the checker would have to take more time
1102
512
# than 'timeout' for the client to be disabled, which is as it
1103
513
# should be.
1104
1105
if self.checker is not None and not self.checker.is_alive():
1106
logger.warning("Checker was not alive; joining")
1107
self.checker.join()
1108
self.checker = None
514
515
# If a checker exists, make sure it is not a zombie
516
try:
517
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
518
except (AttributeError, OSError) as error:
519
if (isinstance(error, OSError)
520
and error.errno != errno.ECHILD):
521
raise error
522
else:
523
if pid:
524
logger.warning("Checker was a zombie")
525
gobject.source_remove(self.checker_callback_tag)
526
self.checker_callback(pid, status,
527
self.current_checker_command)
1109
528
# Start a new checker if needed
1110
529
if self.checker is None:
1111
# Escape attributes for the shell
1112
escaped_attrs = {
1113
attr: re.escape(str(getattr(self, attr)))
1114
for attr in self.runtime_expansions}
1115
530
try:
1116
command = self.checker_command % escaped_attrs
1117
except TypeError as error:
1118
logger.error('Could not format string "%s"',
1119
self.checker_command,
1120
exc_info=error)
1121
return True # Try again later
531
# In case checker_command has exactly one % operator
532
command = self.checker_command % self.host
533
except TypeError:
534
# Escape attributes for the shell
535
escaped_attrs = dict(
536
(attr,
537
re.escape(unicode(str(getattr(self, attr, "")),
538
errors=
539
'replace')))
540
for attr in
541
self.runtime_expansions)
542
543
try:
544
command = self.checker_command % escaped_attrs
545
except TypeError as error:
546
logger.error('Could not format string "%s":'
547
' %s', self.checker_command, error)
548
return True # Try again later
1122
549
self.current_checker_command = command
1123
logger.info("Starting checker %r for %s", command,
1124
self.name)
1125
# We don't need to redirect stdout and stderr, since
1126
# in normal mode, that is already done by daemon(),
1127
# and in debug mode we don't want to. (Stdin is
1128
# always replaced by /dev/null.)
1129
# The exception is when not debugging but nevertheless
1130
# running in the foreground; use the previously
1131
# created wnull.
1132
popen_args = {"close_fds": True,
1133
"shell": True,
1134
"cwd": "/"}
1135
if (not self.server_settings["debug"]
1136
and self.server_settings["foreground"]):
1137
popen_args.update({"stdout": wnull,
1138
"stderr": wnull})
1139
pipe = multiprocessing.Pipe(duplex=False)
1140
self.checker = multiprocessing.Process(
1141
target=call_pipe,
1142
args=(pipe[1], subprocess.call, command),
1143
kwargs=popen_args)
1144
self.checker.start()
1145
self.checker_callback_tag = GLib.io_add_watch(
1146
pipe[0].fileno(), GLib.IO_IN,
1147
self.checker_callback, pipe[0], command)
1148
# Re-run this periodically if run by GLib.timeout_add
550
try:
551
logger.info("Starting checker %r for %s",
552
command, self.name)
553
# We don't need to redirect stdout and stderr, since
554
# in normal mode, that is already done by daemon(),
555
# and in debug mode we don't want to. (Stdin is
556
# always replaced by /dev/null.)
557
self.checker = subprocess.Popen(command,
558
close_fds=True,
559
shell=True, cwd="/")
560
self.checker_callback_tag = (gobject.child_watch_add
561
(self.checker.pid,
562
self.checker_callback,
563
data=command))
564
# The checker may have completed before the gobject
565
# watch was added. Check for this.
566
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
567
if pid:
568
gobject.source_remove(self.checker_callback_tag)
569
self.checker_callback(pid, status, command)
570
except OSError as error:
571
logger.error("Failed to start subprocess: %s",
572
error)
573
# Re-run this periodically if run by gobject.timeout_add
1149
574
return True
1150
575
1151
576
def stop_checker(self):
1152
577
"""Force the checker process, if any, to stop."""
1153
578
if self.checker_callback_tag:
1154
GLib.source_remove(self.checker_callback_tag)
579
gobject.source_remove(self.checker_callback_tag)
1155
580
self.checker_callback_tag = None
1156
581
if getattr(self, "checker", None) is None:
1157
582
return
1158
583
logger.debug("Stopping checker for %(name)s", vars(self))
1159
self.checker.terminate()
584
try:
585
os.kill(self.checker.pid, signal.SIGTERM)
586
#time.sleep(0.5)
587
#if self.checker.poll() is None:
588
# os.kill(self.checker.pid, signal.SIGKILL)
589
except OSError as error:
590
if error.errno != errno.ESRCH: # No such process
591
raise
1160
592
self.checker = None
1161
593
1162
1163
def dbus_service_property(dbus_interface,
1164
signature="v",
1165
access="readwrite",
1166
byte_arrays=False):
594
# Encrypts a client secret and stores it in a varible encrypted_secret
595
def encrypt_secret(self, key):
596
# Encryption-key need to be of a specific size, so we hash inputed key
597
hasheng = hashlib.sha256()
598
hasheng.update(key)
599
encryptionkey = hasheng.digest()
600
601
# Create validation hash so we know at decryption if it was sucessful
602
hasheng = hashlib.sha256()
603
hasheng.update(self.secret)
604
validationhash = hasheng.digest()
605
606
# Encrypt secret
607
iv = os.urandom(Crypto.Cipher.AES.block_size)
608
ciphereng = Crypto.Cipher.AES.new(encryptionkey,
609
Crypto.Cipher.AES.MODE_CFB, iv)
610
ciphertext = ciphereng.encrypt(validationhash+self.secret)
611
self.encrypted_secret = (ciphertext, iv)
612
613
# Decrypt a encrypted client secret
614
def decrypt_secret(self, key):
615
# Decryption-key need to be of a specific size, so we hash inputed key
616
hasheng = hashlib.sha256()
617
hasheng.update(key)
618
encryptionkey = hasheng.digest()
619
620
# Decrypt encrypted secret
621
ciphertext, iv = self.encrypted_secret
622
ciphereng = Crypto.Cipher.AES.new(encryptionkey,
623
Crypto.Cipher.AES.MODE_CFB, iv)
624
plain = ciphereng.decrypt(ciphertext)
625
626
# Validate decrypted secret to know if it was succesful
627
hasheng = hashlib.sha256()
628
validationhash = plain[:hasheng.digest_size]
629
secret = plain[hasheng.digest_size:]
630
hasheng.update(secret)
631
632
# if validation fails, we use key as new secret. Otherwhise, we use
633
# the decrypted secret
634
if hasheng.digest() == validationhash:
635
self.secret = secret
636
else:
637
self.secret = key
638
del self.encrypted_secret
639
640
641
def dbus_service_property(dbus_interface, signature="v",
642
access="readwrite", byte_arrays=False):
1167
643
"""Decorators for marking methods of a DBusObjectWithProperties to
1168
644
become properties on the D-Bus.
1169
645
1170
646
The decorated method will be called with no arguments by "Get"
1171
647
and with one argument by "Set".
1172
648
1173
649
The parameters, where they are supported, are the same as
1174
650
dbus.service.method, except there is only "signature", since the
1175
651
type from Get() and the type sent to Set() is the same.
1178
654
# "Set" method, so we fail early here:
1179
655
if byte_arrays and signature != "ay":
1180
656
raise ValueError("Byte arrays not supported for non-'ay'"
1181
" signature {!r}".format(signature))
1182
657
" signature %r" % signature)
1183
658
def decorator(func):
1184
659
func._dbus_is_property = True
1185
660
func._dbus_interface = dbus_interface
1188
663
func._dbus_name = func.__name__
1189
664
if func._dbus_name.endswith("_dbus_property"):
1190
665
func._dbus_name = func._dbus_name[:-14]
1191
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
1192
return func
1193
1194
return decorator
1195
1196
1197
def dbus_interface_annotations(dbus_interface):
1198
"""Decorator for marking functions returning interface annotations
1199
1200
Usage:
1201
1202
@dbus_interface_annotations("org.example.Interface")
1203
def _foo(self): # Function name does not matter
1204
return {"org.freedesktop.DBus.Deprecated": "true",
1205
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1206
"false"}
1207
"""
1208
1209
def decorator(func):
1210
func._dbus_is_interface = True
1211
func._dbus_interface = dbus_interface
1212
func._dbus_name = dbus_interface
1213
return func
1214
1215
return decorator
1216
1217
1218
def dbus_annotations(annotations):
1219
"""Decorator to annotate D-Bus methods, signals or properties
1220
Usage:
1221
1222
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1223
"org.freedesktop.DBus.Property."
1224
"EmitsChangedSignal": "false"})
1225
@dbus_service_property("org.example.Interface", signature="b",
1226
access="r")
1227
def Property_dbus_property(self):
1228
return dbus.Boolean(False)
1229
1230
See also the DBusObjectWithAnnotations class.
1231
"""
1232
1233
def decorator(func):
1234
func._dbus_annotations = annotations
1235
return func
1236
666
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
667
return func
1237
668
return decorator
1238
669
1239
670
1240
671
class DBusPropertyException(dbus.exceptions.DBusException):
1241
672
"""A base class for D-Bus property-related exceptions
1242
673
"""
1243
pass
674
def __unicode__(self):
675
return unicode(str(self))
1244
676
1245
677
1246
678
class DBusPropertyAccessException(DBusPropertyException):
1255
687
pass
1256
688
1257
689
1258
class DBusObjectWithAnnotations(dbus.service.Object):
1259
"""A D-Bus object with annotations.
1260
1261
Classes inheriting from this can use the dbus_annotations
1262
decorator to add annotations to methods or signals.
1263
"""
1264
1265
@staticmethod
1266
def _is_dbus_thing(thing):
1267
"""Returns a function testing if an attribute is a D-Bus thing
1268
1269
If called like _is_dbus_thing("method") it returns a function
1270
suitable for use as predicate to inspect.getmembers().
1271
"""
1272
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1273
False)
1274
1275
def _get_all_dbus_things(self, thing):
1276
"""Returns a generator of (name, attribute) pairs
1277
"""
1278
return ((getattr(athing.__get__(self), "_dbus_name", name),
1279
athing.__get__(self))
1280
for cls in self.__class__.__mro__
1281
for name, athing in
1282
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1283
1284
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1285
out_signature="s",
1286
path_keyword='object_path',
1287
connection_keyword='connection')
1288
def Introspect(self, object_path, connection):
1289
"""Overloading of standard D-Bus method.
1290
1291
Inserts annotation tags on methods and signals.
1292
"""
1293
xmlstring = dbus.service.Object.Introspect(self, object_path,
1294
connection)
1295
try:
1296
document = xml.dom.minidom.parseString(xmlstring)
1297
1298
for if_tag in document.getElementsByTagName("interface"):
1299
# Add annotation tags
1300
for typ in ("method", "signal"):
1301
for tag in if_tag.getElementsByTagName(typ):
1302
annots = dict()
1303
for name, prop in (self.
1304
_get_all_dbus_things(typ)):
1305
if (name == tag.getAttribute("name")
1306
and prop._dbus_interface
1307
== if_tag.getAttribute("name")):
1308
annots.update(getattr(
1309
prop, "_dbus_annotations", {}))
1310
for name, value in annots.items():
1311
ann_tag = document.createElement(
1312
"annotation")
1313
ann_tag.setAttribute("name", name)
1314
ann_tag.setAttribute("value", value)
1315
tag.appendChild(ann_tag)
1316
# Add interface annotation tags
1317
for annotation, value in dict(
1318
itertools.chain.from_iterable(
1319
annotations().items()
1320
for name, annotations
1321
in self._get_all_dbus_things("interface")
1322
if name == if_tag.getAttribute("name")
1323
)).items():
1324
ann_tag = document.createElement("annotation")
1325
ann_tag.setAttribute("name", annotation)
1326
ann_tag.setAttribute("value", value)
1327
if_tag.appendChild(ann_tag)
1328
# Fix argument name for the Introspect method itself
1329
if (if_tag.getAttribute("name")
1330
== dbus.INTROSPECTABLE_IFACE):
1331
for cn in if_tag.getElementsByTagName("method"):
1332
if cn.getAttribute("name") == "Introspect":
1333
for arg in cn.getElementsByTagName("arg"):
1334
if (arg.getAttribute("direction")
1335
== "out"):
1336
arg.setAttribute("name",
1337
"xml_data")
1338
xmlstring = document.toxml("utf-8")
1339
document.unlink()
1340
except (AttributeError, xml.dom.DOMException,
1341
xml.parsers.expat.ExpatError) as error:
1342
logger.error("Failed to override Introspection method",
1343
exc_info=error)
1344
return xmlstring
1345
1346
1347
class DBusObjectWithProperties(DBusObjectWithAnnotations):
690
class DBusObjectWithProperties(dbus.service.Object):
1348
691
"""A D-Bus object with properties.
1349
692
1350
693
Classes inheriting from this can use the dbus_service_property
1351
694
decorator to expose methods as D-Bus properties. It exposes the
1352
695
standard Get(), Set(), and GetAll() methods on the D-Bus.
1353
696
"""
1354
697
698
@staticmethod
699
def _is_dbus_property(obj):
700
return getattr(obj, "_dbus_is_property", False)
701
702
def _get_all_dbus_properties(self):
703
"""Returns a generator of (name, attribute) pairs
704
"""
705
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
706
for cls in self.__class__.__mro__
707
for name, prop in
708
inspect.getmembers(cls, self._is_dbus_property))
709
1355
710
def _get_dbus_property(self, interface_name, property_name):
1356
711
"""Returns a bound method if one exists which is a D-Bus
1357
712
property with the specified name and interface.
1358
713
"""
1359
for cls in self.__class__.__mro__:
1360
for name, value in inspect.getmembers(
1361
cls, self._is_dbus_thing("property")):
714
for cls in self.__class__.__mro__:
715
for name, value in (inspect.getmembers
716
(cls, self._is_dbus_property)):
1362
717
if (value._dbus_name == property_name
1363
718
and value._dbus_interface == interface_name):
1364
719
return value.__get__(self)
1365
720
1366
721
# No such property
1367
raise DBusPropertyNotFound("{}:{}.{}".format(
1368
self.dbus_object_path, interface_name, property_name))
1369
1370
@classmethod
1371
def _get_all_interface_names(cls):
1372
"""Get a sequence of all interfaces supported by an object"""
1373
return (name for name in set(getattr(getattr(x, attr),
1374
"_dbus_interface", None)
1375
for x in (inspect.getmro(cls))
1376
for attr in dir(x))
1377
if name is not None)
1378
1379
@dbus.service.method(dbus.PROPERTIES_IFACE,
1380
in_signature="ss",
722
raise DBusPropertyNotFound(self.dbus_object_path + ":"
723
+ interface_name + "."
724
+ property_name)
725
726
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1381
727
out_signature="v")
1382
728
def Get(self, interface_name, property_name):
1383
729
"""Standard D-Bus property Get() method, see D-Bus standard.
1389
735
if not hasattr(value, "variant_level"):
1390
736
return value
1391
737
return type(value)(value, variant_level=value.variant_level+1)
1392
738
1393
739
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
1394
740
def Set(self, interface_name, property_name, value):
1395
741
"""Standard D-Bus property Set() method, see D-Bus standard.
1401
747
# The byte_arrays option is not supported yet on
1402
748
# signatures other than "ay".
1403
749
if prop._dbus_signature != "ay":
1404
raise ValueError("Byte arrays not supported for non-"
1405
"'ay' signature {!r}"
1406
.format(prop._dbus_signature))
1407
value = dbus.ByteArray(b''.join(chr(byte)
1408
for byte in value))
750
raise ValueError
751
value = dbus.ByteArray(''.join(unichr(byte)
752
for byte in value))
1409
753
prop(value)
1410
1411
@dbus.service.method(dbus.PROPERTIES_IFACE,
1412
in_signature="s",
754
755
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1413
756
out_signature="a{sv}")
1414
757
def GetAll(self, interface_name):
1415
758
"""Standard D-Bus property GetAll() method, see D-Bus
1416
759
standard.
1417
760
1418
761
Note: Will not include properties with access="write".
1419
762
"""
1420
properties = {}
1421
for name, prop in self._get_all_dbus_things("property"):
763
all = {}
764
for name, prop in self._get_all_dbus_properties():
1422
765
if (interface_name
1423
766
and interface_name != prop._dbus_interface):
1424
767
# Interface non-empty but did not match
1428
771
continue
1429
772
value = prop()
1430
773
if not hasattr(value, "variant_level"):
1431
properties[name] = value
774
all[name] = value
1432
775
continue
1433
properties[name] = type(value)(
1434
value, variant_level=value.variant_level + 1)
1435
return dbus.Dictionary(properties, signature="sv")
1436
1437
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1438
def PropertiesChanged(self, interface_name, changed_properties,
1439
invalidated_properties):
1440
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1441
standard.
1442
"""
1443
pass
1444
776
all[name] = type(value)(value, variant_level=
777
value.variant_level+1)
778
return dbus.Dictionary(all, signature="sv")
779
1445
780
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1446
781
out_signature="s",
1447
782
path_keyword='object_path',
1448
783
connection_keyword='connection')
1449
784
def Introspect(self, object_path, connection):
1450
"""Overloading of standard D-Bus method.
1451
1452
Inserts property tags and interface annotation tags.
785
"""Standard D-Bus method, overloaded to insert property tags.
1453
786
"""
1454
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1455
object_path,
1456
connection)
787
xmlstring = dbus.service.Object.Introspect(self, object_path,
788
connection)
1457
789
try:
1458
790
document = xml.dom.minidom.parseString(xmlstring)
1459
1460
791
def make_tag(document, name, prop):
1461
792
e = document.createElement("property")
1462
793
e.setAttribute("name", name)
1463
794
e.setAttribute("type", prop._dbus_signature)
1464
795
e.setAttribute("access", prop._dbus_access)
1465
796
return e
1466
1467
797
for if_tag in document.getElementsByTagName("interface"):
1468
# Add property tags
1469
798
for tag in (make_tag(document, name, prop)
1470
799
for name, prop
1471
in self._get_all_dbus_things("property")
800
in self._get_all_dbus_properties()
1472
801
if prop._dbus_interface
1473
802
== if_tag.getAttribute("name")):
1474
803
if_tag.appendChild(tag)
1475
# Add annotation tags for properties
1476
for tag in if_tag.getElementsByTagName("property"):
1477
annots = dict()
1478
for name, prop in self._get_all_dbus_things(
1479
"property"):
1480
if (name == tag.getAttribute("name")
1481
and prop._dbus_interface
1482
== if_tag.getAttribute("name")):
1483
annots.update(getattr(
1484
prop, "_dbus_annotations", {}))
1485
for name, value in annots.items():
1486
ann_tag = document.createElement(
1487
"annotation")
1488
ann_tag.setAttribute("name", name)
1489
ann_tag.setAttribute("value", value)
1490
tag.appendChild(ann_tag)
1491
804
# Add the names to the return values for the
1492
805
# "org.freedesktop.DBus.Properties" methods
1493
806
if (if_tag.getAttribute("name")
1508
821
except (AttributeError, xml.dom.DOMException,
1509
822
xml.parsers.expat.ExpatError) as error:
1510
823
logger.error("Failed to override Introspection method",
1511
exc_info=error)
1512
return xmlstring
1513
1514
1515
try:
1516
dbus.OBJECT_MANAGER_IFACE
1517
except AttributeError:
1518
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1519
1520
1521
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1522
"""A D-Bus object with an ObjectManager.
1523
1524
Classes inheriting from this exposes the standard
1525
GetManagedObjects call and the InterfacesAdded and
1526
InterfacesRemoved signals on the standard
1527
"org.freedesktop.DBus.ObjectManager" interface.
1528
1529
Note: No signals are sent automatically; they must be sent
1530
manually.
1531
"""
1532
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1533
out_signature="a{oa{sa{sv}}}")
1534
def GetManagedObjects(self):
1535
"""This function must be overridden"""
1536
raise NotImplementedError()
1537
1538
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1539
signature="oa{sa{sv}}")
1540
def InterfacesAdded(self, object_path, interfaces_and_properties):
1541
pass
1542
1543
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1544
def InterfacesRemoved(self, object_path, interfaces):
1545
pass
1546
1547
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1548
out_signature="s",
1549
path_keyword='object_path',
1550
connection_keyword='connection')
1551
def Introspect(self, object_path, connection):
1552
"""Overloading of standard D-Bus method.
1553
1554
Override return argument name of GetManagedObjects to be
1555
"objpath_interfaces_and_properties"
1556
"""
1557
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1558
object_path,
1559
connection)
1560
try:
1561
document = xml.dom.minidom.parseString(xmlstring)
1562
1563
for if_tag in document.getElementsByTagName("interface"):
1564
# Fix argument name for the GetManagedObjects method
1565
if (if_tag.getAttribute("name")
1566
== dbus.OBJECT_MANAGER_IFACE):
1567
for cn in if_tag.getElementsByTagName("method"):
1568
if (cn.getAttribute("name")
1569
== "GetManagedObjects"):
1570
for arg in cn.getElementsByTagName("arg"):
1571
if (arg.getAttribute("direction")
1572
== "out"):
1573
arg.setAttribute(
1574
"name",
1575
"objpath_interfaces"
1576
"_and_properties")
1577
xmlstring = document.toxml("utf-8")
1578
document.unlink()
1579
except (AttributeError, xml.dom.DOMException,
1580
xml.parsers.expat.ExpatError) as error:
1581
logger.error("Failed to override Introspection method",
1582
exc_info=error)
1583
return xmlstring
1584
1585
1586
def datetime_to_dbus(dt, variant_level=0):
824
error)
825
return xmlstring
826
827
828
def datetime_to_dbus (dt, variant_level=0):
1587
829
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1588
830
if dt is None:
1589
return dbus.String("", variant_level=variant_level)
1590
return dbus.String(dt.isoformat(), variant_level=variant_level)
1591
1592
1593
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1594
"""A class decorator; applied to a subclass of
1595
dbus.service.Object, it will add alternate D-Bus attributes with
1596
interface names according to the "alt_interface_names" mapping.
1597
Usage:
1598
1599
@alternate_dbus_interfaces({"org.example.Interface":
1600
"net.example.AlternateInterface"})
1601
class SampleDBusObject(dbus.service.Object):
1602
@dbus.service.method("org.example.Interface")
1603
def SampleDBusMethod():
1604
pass
1605
1606
The above "SampleDBusMethod" on "SampleDBusObject" will be
1607
reachable via two interfaces: "org.example.Interface" and
1608
"net.example.AlternateInterface", the latter of which will have
1609
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1610
"true", unless "deprecate" is passed with a False value.
1611
1612
This works for methods and signals, and also for D-Bus properties
1613
(from DBusObjectWithProperties) and interfaces (from the
1614
dbus_interface_annotations decorator).
831
return dbus.String("", variant_level = variant_level)
832
return dbus.String(dt.isoformat(),
833
variant_level=variant_level)
834
835
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
836
.__metaclass__):
837
"""Applied to an empty subclass of a D-Bus object, this metaclass
838
will add additional D-Bus attributes matching a certain pattern.
1615
839
"""
1616
1617
def wrapper(cls):
1618
for orig_interface_name, alt_interface_name in (
1619
alt_interface_names.items()):
1620
attr = {}
1621
interface_names = set()
1622
# Go though all attributes of the class
1623
for attrname, attribute in inspect.getmembers(cls):
840
def __new__(mcs, name, bases, attr):
841
# Go through all the base classes which could have D-Bus
842
# methods, signals, or properties in them
843
for base in (b for b in bases
844
if issubclass(b, dbus.service.Object)):
845
# Go though all attributes of the base class
846
for attrname, attribute in inspect.getmembers(base):
1624
847
# Ignore non-D-Bus attributes, and D-Bus attributes
1625
848
# with the wrong interface name
1626
849
if (not hasattr(attribute, "_dbus_interface")
1627
or not attribute._dbus_interface.startswith(
1628
orig_interface_name)):
850
or not attribute._dbus_interface
851
.startswith("se.recompile.Mandos")):
1629
852
continue
1630
853
# Create an alternate D-Bus interface name based on
1631
854
# the current name
1632
alt_interface = attribute._dbus_interface.replace(
1633
orig_interface_name, alt_interface_name)
1634
interface_names.add(alt_interface)
855
alt_interface = (attribute._dbus_interface
856
.replace("se.recompile.Mandos",
857
"se.bsnet.fukt.Mandos"))
1635
858
# Is this a D-Bus signal?
1636
859
if getattr(attribute, "_dbus_is_signal", False):
1637
# Extract the original non-method undecorated
1638
# function by black magic
1639
if sys.version_info.major == 2:
1640
nonmethod_func = (dict(
860
# Extract the original non-method function by
861
# black magic
862
nonmethod_func = (dict(
1641
863
zip(attribute.func_code.co_freevars,
1642
attribute.__closure__))
1643
["func"].cell_contents)
1644
else:
1645
nonmethod_func = (dict(
1646
zip(attribute.__code__.co_freevars,
1647
attribute.__closure__))
1648
["func"].cell_contents)
864
attribute.__closure__))["func"]
865
.cell_contents)
1649
866
# Create a new, but exactly alike, function
1650
867
# object, and decorate it to be a new D-Bus signal
1651
868
# with the alternate D-Bus interface name
1652
new_function = copy_function(nonmethod_func)
1653
new_function = (dbus.service.signal(
1654
alt_interface,
1655
attribute._dbus_signature)(new_function))
1656
# Copy annotations, if any
1657
try:
1658
new_function._dbus_annotations = dict(
1659
attribute._dbus_annotations)
1660
except AttributeError:
1661
pass
1662
869
new_function = (dbus.service.signal
870
(alt_interface,
871
attribute._dbus_signature)
872
(types.FunctionType(
873
nonmethod_func.func_code,
874
nonmethod_func.func_globals,
875
nonmethod_func.func_name,
876
nonmethod_func.func_defaults,
877
nonmethod_func.func_closure)))
1663
878
# Define a creator of a function to call both the
1664
# original and alternate functions, so both the
1665
# original and alternate signals gets sent when
1666
# the function is called
879
# old and new functions, so both the old and new
880
# signals gets sent when the function is called
1667
881
def fixscope(func1, func2):
1668
882
"""This function is a scope container to pass
1669
883
func1 and func2 to the "call_both" function
1670
884
outside of its arguments"""
1671
1672
@functools.wraps(func2)
1673
885
def call_both(*args, **kwargs):
1674
886
"""This function will emit two D-Bus
1675
887
signals by calling func1 and func2"""
1676
888
func1(*args, **kwargs)
1677
889
func2(*args, **kwargs)
1678
# Make wrapper function look like a D-Bus
1679
# signal
1680
for name, attr in inspect.getmembers(func2):
1681
if name.startswith("_dbus_"):
1682
setattr(call_both, name, attr)
1683
1684
890
return call_both
1685
891
# Create the "call_both" function and add it to
1686
892
# the class
1687
attr[attrname] = fixscope(attribute, new_function)
893
attr[attrname] = fixscope(attribute,
894
new_function)
1688
895
# Is this a D-Bus method?
1689
896
elif getattr(attribute, "_dbus_is_method", False):
1690
897
# Create a new, but exactly alike, function
1691
898
# object. Decorate it to be a new D-Bus method
1692
899
# with the alternate D-Bus interface name. Add it
1693
900
# to the class.
1694
attr[attrname] = (
1695
dbus.service.method(
1696
alt_interface,
1697
attribute._dbus_in_signature,
1698
attribute._dbus_out_signature)
1699
(copy_function(attribute)))
1700
# Copy annotations, if any
1701
try:
1702
attr[attrname]._dbus_annotations = dict(
1703
attribute._dbus_annotations)
1704
except AttributeError:
1705
pass
901
attr[attrname] = (dbus.service.method
902
(alt_interface,
903
attribute._dbus_in_signature,
904
attribute._dbus_out_signature)
905
(types.FunctionType
906
(attribute.func_code,
907
attribute.func_globals,
908
attribute.func_name,
909
attribute.func_defaults,
910
attribute.func_closure)))
1706
911
# Is this a D-Bus property?
1707
912
elif getattr(attribute, "_dbus_is_property", False):
1708
913
# Create a new, but exactly alike, function
1709
914
# object, and decorate it to be a new D-Bus
1710
915
# property with the alternate D-Bus interface
1711
916
# name. Add it to the class.
1712
attr[attrname] = (dbus_service_property(
1713
alt_interface, attribute._dbus_signature,
1714
attribute._dbus_access,
1715
attribute._dbus_get_args_options
1716
["byte_arrays"])
1717
(copy_function(attribute)))
1718
# Copy annotations, if any
1719
try:
1720
attr[attrname]._dbus_annotations = dict(
1721
attribute._dbus_annotations)
1722
except AttributeError:
1723
pass
1724
# Is this a D-Bus interface?
1725
elif getattr(attribute, "_dbus_is_interface", False):
1726
# Create a new, but exactly alike, function
1727
# object. Decorate it to be a new D-Bus interface
1728
# with the alternate D-Bus interface name. Add it
1729
# to the class.
1730
attr[attrname] = (
1731
dbus_interface_annotations(alt_interface)
1732
(copy_function(attribute)))
1733
if deprecate:
1734
# Deprecate all alternate interfaces
1735
iname = "_AlternateDBusNames_interface_annotation{}"
1736
for interface_name in interface_names:
1737
1738
@dbus_interface_annotations(interface_name)
1739
def func(self):
1740
return {"org.freedesktop.DBus.Deprecated":
1741
"true"}
1742
# Find an unused name
1743
for aname in (iname.format(i)
1744
for i in itertools.count()):
1745
if aname not in attr:
1746
attr[aname] = func
1747
break
1748
if interface_names:
1749
# Replace the class with a new subclass of it with
1750
# methods, signals, etc. as created above.
1751
if sys.version_info.major == 2:
1752
cls = type(b"{}Alternate".format(cls.__name__),
1753
(cls, ), attr)
1754
else:
1755
cls = type("{}Alternate".format(cls.__name__),
1756
(cls, ), attr)
1757
return cls
1758
1759
return wrapper
1760
1761
1762
@alternate_dbus_interfaces({"se.recompile.Mandos":
1763
"se.bsnet.fukt.Mandos"})
917
attr[attrname] = (dbus_service_property
918
(alt_interface,
919
attribute._dbus_signature,
920
attribute._dbus_access,
921
attribute
922
._dbus_get_args_options
923
["byte_arrays"])
924
(types.FunctionType
925
(attribute.func_code,
926
attribute.func_globals,
927
attribute.func_name,
928
attribute.func_defaults,
929
attribute.func_closure)))
930
return type.__new__(mcs, name, bases, attr)
931
1764
932
class ClientDBus(Client, DBusObjectWithProperties):
1765
933
"""A Client class using D-Bus
1766
934
1767
935
Attributes:
1768
936
dbus_object_path: dbus.ObjectPath
1769
937
bus: dbus.SystemBus()
1770
938
"""
1771
939
1772
940
runtime_expansions = (Client.runtime_expansions
1773
+ ("dbus_object_path", ))
1774
1775
_interface = "se.recompile.Mandos.Client"
1776
941
+ ("dbus_object_path",))
942
1777
943
# dbus.service.Object doesn't use super(), so we can't either.
1778
1779
def __init__(self, bus=None, *args, **kwargs):
944
945
def __init__(self, bus = None, *args, **kwargs):
1780
946
self.bus = bus
1781
947
Client.__init__(self, *args, **kwargs)
948
949
self._approvals_pending = 0
1782
950
# Only now, when this client is initialized, can it show up on
1783
951
# the D-Bus
1784
client_object_name = str(self.name).translate(
952
client_object_name = unicode(self.name).translate(
1785
953
{ord("."): ord("_"),
1786
954
ord("-"): ord("_")})
1787
self.dbus_object_path = dbus.ObjectPath(
1788
"/clients/" + client_object_name)
955
self.dbus_object_path = (dbus.ObjectPath
956
("/clients/" + client_object_name))
1789
957
DBusObjectWithProperties.__init__(self, self.bus,
1790
958
self.dbus_object_path)
1791
1792
def notifychangeproperty(transform_func, dbus_name,
1793
type_func=lambda x: x,
1794
variant_level=1,
1795
invalidate_only=False,
1796
_interface=_interface):
959
960
def notifychangeproperty(transform_func,
961
dbus_name, type_func=lambda x: x,
962
variant_level=1):
1797
963
""" Modify a variable so that it's a property which announces
1798
964
its changes to DBus.
1799
965
1804
970
to the D-Bus. Default: no transform
1805
971
variant_level: D-Bus variant level. Default: 1
1806
972
"""
1807
attrname = "_{}".format(dbus_name)
1808
973
attrname = "_{0}".format(dbus_name)
1809
974
def setter(self, value):
1810
975
if hasattr(self, "dbus_object_path"):
1811
976
if (not hasattr(self, attrname) or
1812
977
type_func(getattr(self, attrname, None))
1813
978
!= type_func(value)):
1814
if invalidate_only:
1815
self.PropertiesChanged(
1816
_interface, dbus.Dictionary(),
1817
dbus.Array((dbus_name, )))
1818
else:
1819
dbus_value = transform_func(
1820
type_func(value),
1821
variant_level=variant_level)
1822
self.PropertyChanged(dbus.String(dbus_name),
1823
dbus_value)
1824
self.PropertiesChanged(
1825
_interface,
1826
dbus.Dictionary({dbus.String(dbus_name):
1827
dbus_value}),
1828
dbus.Array())
979
dbus_value = transform_func(type_func(value),
980
variant_level
981
=variant_level)
982
self.PropertyChanged(dbus.String(dbus_name),
983
dbus_value)
1829
984
setattr(self, attrname, value)
1830
985
1831
986
return property(lambda self: getattr(self, attrname), setter)
1832
987
988
1833
989
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1834
990
approvals_pending = notifychangeproperty(dbus.Boolean,
1835
991
"ApprovalPending",
1836
type_func=bool)
992
type_func = bool)
1837
993
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1838
994
last_enabled = notifychangeproperty(datetime_to_dbus,
1839
995
"LastEnabled")
1840
checker = notifychangeproperty(
1841
dbus.Boolean, "CheckerRunning",
1842
type_func=lambda checker: checker is not None)
996
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
997
type_func = lambda checker:
998
checker is not None)
1843
999
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1844
1000
"LastCheckedOK")
1845
last_checker_status = notifychangeproperty(dbus.Int16,
1846
"LastCheckerStatus")
1847
1001
last_approval_request = notifychangeproperty(
1848
1002
datetime_to_dbus, "LastApprovalRequest")
1849
1003
approved_by_default = notifychangeproperty(dbus.Boolean,
1850
1004
"ApprovedByDefault")
1851
approval_delay = notifychangeproperty(
1852
dbus.UInt64, "ApprovalDelay",
1853
type_func=lambda td: td.total_seconds() * 1000)
1005
approval_delay = notifychangeproperty(dbus.UInt16,
1006
"ApprovalDelay",
1007
type_func =
1008
_timedelta_to_milliseconds)
1854
1009
approval_duration = notifychangeproperty(
1855
dbus.UInt64, "ApprovalDuration",
1856
type_func=lambda td: td.total_seconds() * 1000)
1010
dbus.UInt16, "ApprovalDuration",
1011
type_func = _timedelta_to_milliseconds)
1857
1012
host = notifychangeproperty(dbus.String, "Host")
1858
timeout = notifychangeproperty(
1859
dbus.UInt64, "Timeout",
1860
type_func=lambda td: td.total_seconds() * 1000)
1013
timeout = notifychangeproperty(dbus.UInt16, "Timeout",
1014
type_func =
1015
_timedelta_to_milliseconds)
1861
1016
extended_timeout = notifychangeproperty(
1862
dbus.UInt64, "ExtendedTimeout",
1863
type_func=lambda td: td.total_seconds() * 1000)
1864
interval = notifychangeproperty(
1865
dbus.UInt64, "Interval",
1866
type_func=lambda td: td.total_seconds() * 1000)
1017
dbus.UInt16, "ExtendedTimeout",
1018
type_func = _timedelta_to_milliseconds)
1019
interval = notifychangeproperty(dbus.UInt16,
1020
"Interval",
1021
type_func =
1022
_timedelta_to_milliseconds)
1867
1023
checker_command = notifychangeproperty(dbus.String, "Checker")
1868
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1869
invalidate_only=True)
1870
1024
1871
1025
del notifychangeproperty
1872
1026
1873
1027
def __del__(self, *args, **kwargs):
1874
1028
try:
1875
1029
self.remove_from_connection()
1878
1032
if hasattr(DBusObjectWithProperties, "__del__"):
1879
1033
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1880
1034
Client.__del__(self, *args, **kwargs)
1881
1882
def checker_callback(self, source, condition,
1883
connection, command, *args, **kwargs):
1884
ret = Client.checker_callback(self, source, condition,
1885
connection, command, *args,
1886
**kwargs)
1887
exitstatus = self.last_checker_status
1888
if exitstatus >= 0:
1035
1036
def checker_callback(self, pid, condition, command,
1037
*args, **kwargs):
1038
self.checker_callback_tag = None
1039
self.checker = None
1040
if os.WIFEXITED(condition):
1041
exitstatus = os.WEXITSTATUS(condition)
1889
1042
# Emit D-Bus signal
1890
1043
self.CheckerCompleted(dbus.Int16(exitstatus),
1891
# This is specific to GNU libC
1892
dbus.Int64(exitstatus << 8),
1044
dbus.Int64(condition),
1893
1045
dbus.String(command))
1894
1046
else:
1895
1047
# Emit D-Bus signal
1896
1048
self.CheckerCompleted(dbus.Int16(-1),
1897
dbus.Int64(
1898
# This is specific to GNU libC
1899
(exitstatus << 8)
1900
| self.last_checker_signal),
1049
dbus.Int64(condition),
1901
1050
dbus.String(command))
1902
return ret
1903
1051
1052
return Client.checker_callback(self, pid, condition, command,
1053
*args, **kwargs)
1054
1904
1055
def start_checker(self, *args, **kwargs):
1905
old_checker_pid = getattr(self.checker, "pid", None)
1056
old_checker = self.checker
1057
if self.checker is not None:
1058
old_checker_pid = self.checker.pid
1059
else:
1060
old_checker_pid = None
1906
1061
r = Client.start_checker(self, *args, **kwargs)
1907
1062
# Only if new checker process was started
1908
1063
if (self.checker is not None
1910
1065
# Emit D-Bus signal
1911
1066
self.CheckerStarted(self.current_checker_command)
1912
1067
return r
1913
1068
1914
1069
def _reset_approved(self):
1915
self.approved = None
1070
self._approved = None
1916
1071
return False
1917
1072
1918
1073
def approve(self, value=True):
1919
self.approved = value
1920
GLib.timeout_add(int(self.approval_duration.total_seconds()
1921
* 1000), self._reset_approved)
1922
1074
self.send_changedstate()
1923
1924
# D-Bus methods, signals & properties
1925
1926
# Interfaces
1927
1928
# Signals
1929
1075
self._approved = value
1076
gobject.timeout_add(_timedelta_to_milliseconds
1077
(self.approval_duration),
1078
self._reset_approved)
1079
1080
1081
## D-Bus methods, signals & properties
1082
_interface = "se.recompile.Mandos.Client"
1083
1084
## Signals
1085
1930
1086
# CheckerCompleted - signal
1931
1087
@dbus.service.signal(_interface, signature="nxs")
1932
1088
def CheckerCompleted(self, exitcode, waitstatus, command):
1933
1089
"D-Bus signal"
1934
1090
pass
1935
1091
1936
1092
# CheckerStarted - signal
1937
1093
@dbus.service.signal(_interface, signature="s")
1938
1094
def CheckerStarted(self, command):
1939
1095
"D-Bus signal"
1940
1096
pass
1941
1097
1942
1098
# PropertyChanged - signal
1943
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1944
1099
@dbus.service.signal(_interface, signature="sv")
1945
1100
def PropertyChanged(self, property, value):
1946
1101
"D-Bus signal"
1947
1102
pass
1948
1103
1949
1104
# GotSecret - signal
1950
1105
@dbus.service.signal(_interface)
1951
1106
def GotSecret(self):
1954
1109
server to mandos-client
1955
1110
"""
1956
1111
pass
1957
1112
1958
1113
# Rejected - signal
1959
1114
@dbus.service.signal(_interface, signature="s")
1960
1115
def Rejected(self, reason):
1961
1116
"D-Bus signal"
1962
1117
pass
1963
1118
1964
1119
# NeedApproval - signal
1965
1120
@dbus.service.signal(_interface, signature="tb")
1966
1121
def NeedApproval(self, timeout, default):
1967
1122
"D-Bus signal"
1968
1123
return self.need_approval()
1969
1970
# Methods
1971
1124
1125
# NeRwequest - signal
1126
@dbus.service.signal(_interface, signature="s")
1127
def NewRequest(self, ip):
1128
"""D-Bus signal
1129
Is sent after a client request a password.
1130
"""
1131
pass
1132
1133
## Methods
1134
1972
1135
# Approve - method
1973
1136
@dbus.service.method(_interface, in_signature="b")
1974
1137
def Approve(self, value):
1975
1138
self.approve(value)
1976
1139
1977
1140
# CheckedOK - method
1978
1141
@dbus.service.method(_interface)
1979
1142
def CheckedOK(self):
1980
1143
self.checked_ok()
1981
1144
1982
1145
# Enable - method
1983
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1984
1146
@dbus.service.method(_interface)
1985
1147
def Enable(self):
1986
1148
"D-Bus method"
1987
1149
self.enable()
1988
1150
1989
1151
# StartChecker - method
1990
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1991
1152
@dbus.service.method(_interface)
1992
1153
def StartChecker(self):
1993
1154
"D-Bus method"
1994
1155
self.start_checker()
1995
1156
1996
1157
# Disable - method
1997
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1998
1158
@dbus.service.method(_interface)
1999
1159
def Disable(self):
2000
1160
"D-Bus method"
2001
1161
self.disable()
2002
1162
2003
1163
# StopChecker - method
2004
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2005
1164
@dbus.service.method(_interface)
2006
1165
def StopChecker(self):
2007
1166
self.stop_checker()
2008
2009
# Properties
2010
1167
1168
## Properties
1169
2011
1170
# ApprovalPending - property
2012
1171
@dbus_service_property(_interface, signature="b", access="read")
2013
1172
def ApprovalPending_dbus_property(self):
2014
1173
return dbus.Boolean(bool(self.approvals_pending))
2015
1174
2016
1175
# ApprovedByDefault - property
2017
@dbus_service_property(_interface,
2018
signature="b",
1176
@dbus_service_property(_interface, signature="b",
2019
1177
access="readwrite")
2020
1178
def ApprovedByDefault_dbus_property(self, value=None):
2021
1179
if value is None: # get
2022
1180
return dbus.Boolean(self.approved_by_default)
2023
1181
self.approved_by_default = bool(value)
2024
1182
2025
1183
# ApprovalDelay - property
2026
@dbus_service_property(_interface,
2027
signature="t",
1184
@dbus_service_property(_interface, signature="t",
2028
1185
access="readwrite")
2029
1186
def ApprovalDelay_dbus_property(self, value=None):
2030
1187
if value is None: # get
2031
return dbus.UInt64(self.approval_delay.total_seconds()
2032
* 1000)
1188
return dbus.UInt64(self.approval_delay_milliseconds())
2033
1189
self.approval_delay = datetime.timedelta(0, 0, 0, value)
2034
1190
2035
1191
# ApprovalDuration - property
2036
@dbus_service_property(_interface,
2037
signature="t",
1192
@dbus_service_property(_interface, signature="t",
2038
1193
access="readwrite")
2039
1194
def ApprovalDuration_dbus_property(self, value=None):
2040
1195
if value is None: # get
2041
return dbus.UInt64(self.approval_duration.total_seconds()
2042
* 1000)
1196
return dbus.UInt64(_timedelta_to_milliseconds(
1197
self.approval_duration))
2043
1198
self.approval_duration = datetime.timedelta(0, 0, 0, value)
2044
1199
2045
1200
# Name - property
2046
@dbus_annotations(
2047
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2048
1201
@dbus_service_property(_interface, signature="s", access="read")
2049
1202
def Name_dbus_property(self):
2050
1203
return dbus.String(self.name)
2051
2052
# KeyID - property
2053
@dbus_annotations(
2054
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2055
@dbus_service_property(_interface, signature="s", access="read")
2056
def KeyID_dbus_property(self):
2057
return dbus.String(self.key_id)
2058
1204
2059
1205
# Fingerprint - property
2060
@dbus_annotations(
2061
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2062
1206
@dbus_service_property(_interface, signature="s", access="read")
2063
1207
def Fingerprint_dbus_property(self):
2064
1208
return dbus.String(self.fingerprint)
2065
1209
2066
1210
# Host - property
2067
@dbus_service_property(_interface,
2068
signature="s",
1211
@dbus_service_property(_interface, signature="s",
2069
1212
access="readwrite")
2070
1213
def Host_dbus_property(self, value=None):
2071
1214
if value is None: # get
2072
1215
return dbus.String(self.host)
2073
self.host = str(value)
2074
1216
self.host = value
1217
2075
1218
# Created - property
2076
@dbus_annotations(
2077
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2078
1219
@dbus_service_property(_interface, signature="s", access="read")
2079
1220
def Created_dbus_property(self):
2080
return datetime_to_dbus(self.created)
2081
1221
return dbus.String(datetime_to_dbus(self.created))
1222
2082
1223
# LastEnabled - property
2083
1224
@dbus_service_property(_interface, signature="s", access="read")
2084
1225
def LastEnabled_dbus_property(self):
2085
1226
return datetime_to_dbus(self.last_enabled)
2086
1227
2087
1228
# Enabled - property
2088
@dbus_service_property(_interface,
2089
signature="b",
1229
@dbus_service_property(_interface, signature="b",
2090
1230
access="readwrite")
2091
1231
def Enabled_dbus_property(self, value=None):
2092
1232
if value is None: # get
2095
1235
self.enable()
2096
1236
else:
2097
1237
self.disable()
2098
1238
2099
1239
# LastCheckedOK - property
2100
@dbus_service_property(_interface,
2101
signature="s",
1240
@dbus_service_property(_interface, signature="s",
2102
1241
access="readwrite")
2103
1242
def LastCheckedOK_dbus_property(self, value=None):
2104
1243
if value is not None:
2105
1244
self.checked_ok()
2106
1245
return
2107
1246
return datetime_to_dbus(self.last_checked_ok)
2108
2109
# LastCheckerStatus - property
2110
@dbus_service_property(_interface, signature="n", access="read")
2111
def LastCheckerStatus_dbus_property(self):
2112
return dbus.Int16(self.last_checker_status)
2113
1247
2114
1248
# Expires - property
2115
1249
@dbus_service_property(_interface, signature="s", access="read")
2116
1250
def Expires_dbus_property(self):
2117
1251
return datetime_to_dbus(self.expires)
2118
1252
2119
1253
# LastApprovalRequest - property
2120
1254
@dbus_service_property(_interface, signature="s", access="read")
2121
1255
def LastApprovalRequest_dbus_property(self):
2122
1256
return datetime_to_dbus(self.last_approval_request)
2123
1257
2124
1258
# Timeout - property
2125
@dbus_service_property(_interface,
2126
signature="t",
1259
@dbus_service_property(_interface, signature="t",
2127
1260
access="readwrite")
2128
1261
def Timeout_dbus_property(self, value=None):
2129
1262
if value is None: # get
2130
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2131
old_timeout = self.timeout
1263
return dbus.UInt64(self.timeout_milliseconds())
2132
1264
self.timeout = datetime.timedelta(0, 0, 0, value)
2133
# Reschedule disabling
2134
if self.enabled:
2135
now = datetime.datetime.utcnow()
2136
self.expires += self.timeout - old_timeout
2137
if self.expires <= now:
2138
# The timeout has passed
2139
self.disable()
2140
else:
2141
if (getattr(self, "disable_initiator_tag", None)
2142
is None):
2143
return
2144
GLib.source_remove(self.disable_initiator_tag)
2145
self.disable_initiator_tag = GLib.timeout_add(
2146
int((self.expires - now).total_seconds() * 1000),
2147
self.disable)
2148
1265
if getattr(self, "disable_initiator_tag", None) is None:
1266
return
1267
# Reschedule timeout
1268
gobject.source_remove(self.disable_initiator_tag)
1269
self.disable_initiator_tag = None
1270
self.expires = None
1271
time_to_die = _timedelta_to_milliseconds((self
1272
.last_checked_ok
1273
+ self.timeout)
1274
- datetime.datetime
1275
.utcnow())
1276
if time_to_die <= 0:
1277
# The timeout has passed
1278
self.disable()
1279
else:
1280
self.expires = (datetime.datetime.utcnow()
1281
+ datetime.timedelta(milliseconds =
1282
time_to_die))
1283
self.disable_initiator_tag = (gobject.timeout_add
1284
(time_to_die, self.disable))
1285
2149
1286
# ExtendedTimeout - property
2150
@dbus_service_property(_interface,
2151
signature="t",
1287
@dbus_service_property(_interface, signature="t",
2152
1288
access="readwrite")
2153
1289
def ExtendedTimeout_dbus_property(self, value=None):
2154
1290
if value is None: # get
2155
return dbus.UInt64(self.extended_timeout.total_seconds()
2156
* 1000)
1291
return dbus.UInt64(self.extended_timeout_milliseconds())
2157
1292
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2158
1293
2159
1294
# Interval - property
2160
@dbus_service_property(_interface,
2161
signature="t",
1295
@dbus_service_property(_interface, signature="t",
2162
1296
access="readwrite")
2163
1297
def Interval_dbus_property(self, value=None):
2164
1298
if value is None: # get
2165
return dbus.UInt64(self.interval.total_seconds() * 1000)
1299
return dbus.UInt64(self.interval_milliseconds())
2166
1300
self.interval = datetime.timedelta(0, 0, 0, value)
2167
1301
if getattr(self, "checker_initiator_tag", None) is None:
2168
1302
return
2169
if self.enabled:
2170
# Reschedule checker run
2171
GLib.source_remove(self.checker_initiator_tag)
2172
self.checker_initiator_tag = GLib.timeout_add(
2173
value, self.start_checker)
2174
self.start_checker() # Start one now, too
2175
1303
# Reschedule checker run
1304
gobject.source_remove(self.checker_initiator_tag)
1305
self.checker_initiator_tag = (gobject.timeout_add
1306
(value, self.start_checker))
1307
self.start_checker() # Start one now, too
1308
2176
1309
# Checker - property
2177
@dbus_service_property(_interface,
2178
signature="s",
1310
@dbus_service_property(_interface, signature="s",
2179
1311
access="readwrite")
2180
1312
def Checker_dbus_property(self, value=None):
2181
1313
if value is None: # get
2182
1314
return dbus.String(self.checker_command)
2183
self.checker_command = str(value)
2184
1315
self.checker_command = value
1316
2185
1317
# CheckerRunning - property
2186
@dbus_service_property(_interface,
2187
signature="b",
1318
@dbus_service_property(_interface, signature="b",
2188
1319
access="readwrite")
2189
1320
def CheckerRunning_dbus_property(self, value=None):
2190
1321
if value is None: # get
2193
1324
self.start_checker()
2194
1325
else:
2195
1326
self.stop_checker()
2196
1327
2197
1328
# ObjectPath - property
2198
@dbus_annotations(
2199
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2200
"org.freedesktop.DBus.Deprecated": "true"})
2201
1329
@dbus_service_property(_interface, signature="o", access="read")
2202
1330
def ObjectPath_dbus_property(self):
2203
return self.dbus_object_path # is already a dbus.ObjectPath
2204
1331
return self.dbus_object_path # is already a dbus.ObjectPath
1332
2205
1333
# Secret = property
2206
@dbus_annotations(
2207
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2208
"invalidates"})
2209
@dbus_service_property(_interface,
2210
signature="ay",
2211
access="write",
2212
byte_arrays=True)
1334
@dbus_service_property(_interface, signature="ay",
1335
access="write", byte_arrays=True)
2213
1336
def Secret_dbus_property(self, value):
2214
self.secret = bytes(value)
2215
1337
self.secret = str(value)
1338
2216
1339
del _interface
2217
1340
2218
1341
2219
class ProxyClient:
2220
def __init__(self, child_pipe, key_id, fpr, address):
1342
class ProxyClient(object):
1343
def __init__(self, child_pipe, fpr, address):
2221
1344
self._pipe = child_pipe
2222
self._pipe.send(('init', key_id, fpr, address))
1345
self._pipe.send(('init', fpr, address))
2223
1346
if not self._pipe.recv():
2224
raise KeyError(key_id or fpr)
2225
1347
raise KeyError()
1348
2226
1349
def __getattribute__(self, name):
2227
if name == '_pipe':
1350
if(name == '_pipe'):
2228
1351
return super(ProxyClient, self).__getattribute__(name)
2229
1352
self._pipe.send(('getattr', name))
2230
1353
data = self._pipe.recv()
2231
1354
if data[0] == 'data':
2232
1355
return data[1]
2233
1356
if data[0] == 'function':
2234
2235
1357
def func(*args, **kwargs):
2236
1358
self._pipe.send(('funcall', name, args, kwargs))
2237
1359
return self._pipe.recv()[1]
2238
2239
1360
return func
2240
1361
2241
1362
def __setattr__(self, name, value):
2242
if name == '_pipe':
1363
if(name == '_pipe'):
2243
1364
return super(ProxyClient, self).__setattr__(name, value)
2244
1365
self._pipe.send(('setattr', name, value))
2245
1366
1367
class ClientDBusTransitional(ClientDBus):
1368
__metaclass__ = AlternateDBusNamesMetaclass
2246
1369
2247
1370
class ClientHandler(socketserver.BaseRequestHandler, object):
2248
1371
"""A class to handle client connections.
2249
1372
2250
1373
Instantiated once for each connection to handle it.
2251
1374
Note: This will run in its own forked process."""
2252
1375
2253
1376
def handle(self):
2254
1377
with contextlib.closing(self.server.child_pipe) as child_pipe:
2255
1378
logger.info("TCP connection from: %s",
2256
str(self.client_address))
1379
unicode(self.client_address))
2257
1380
logger.debug("Pipe FD: %d",
2258
1381
self.server.child_pipe.fileno())
2259
2260
session = gnutls.ClientSession(self.request)
2261
2262
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2263
# "+AES-256-CBC", "+SHA1",
2264
# "+COMP-NULL", "+CTYPE-OPENPGP",
2265
# "+DHE-DSS"))
1382
1383
session = (gnutls.connection
1384
.ClientSession(self.request,
1385
gnutls.connection
1386
.X509Credentials()))
1387
1388
# Note: gnutls.connection.X509Credentials is really a
1389
# generic GnuTLS certificate credentials object so long as
1390
# no X.509 keys are added to it. Therefore, we can use it
1391
# here despite using OpenPGP certificates.
1392
1393
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1394
# "+AES-256-CBC", "+SHA1",
1395
# "+COMP-NULL", "+CTYPE-OPENPGP",
1396
# "+DHE-DSS"))
2266
1397
# Use a fallback default, since this MUST be set.
2267
1398
priority = self.server.gnutls_priority
2268
1399
if priority is None:
2269
1400
priority = "NORMAL"
2270
gnutls.priority_set_direct(session._c_object,
2271
priority.encode("utf-8"),
2272
None)
2273
1401
(gnutls.library.functions
1402
.gnutls_priority_set_direct(session._c_object,
1403
priority, None))
1404
2274
1405
# Start communication using the Mandos protocol
2275
1406
# Get protocol number
2276
1407
line = self.request.makefile().readline()
2277
1408
logger.debug("Protocol version: %r", line)
2278
1409
try:
2279
1410
if int(line.strip().split()[0]) > 1:
2280
raise RuntimeError(line)
1411
raise RuntimeError
2281
1412
except (ValueError, IndexError, RuntimeError) as error:
2282
1413
logger.error("Unknown protocol version: %s", error)
2283
1414
return
2284
1415
2285
1416
# Start GnuTLS connection
2286
1417
try:
2287
1418
session.handshake()
2288
except gnutls.Error as error:
1419
except gnutls.errors.GNUTLSError as error:
2289
1420
logger.warning("Handshake failed: %s", error)
2290
1421
# Do not run session.bye() here: the session is not
2291
1422
# established. Just abandon the request.
2292
1423
return
2293
1424
logger.debug("Handshake succeeded")
2294
1425
2295
1426
approval_required = False
2296
1427
try:
2297
if gnutls.has_rawpk:
2298
fpr = b""
2299
try:
2300
key_id = self.key_id(
2301
self.peer_certificate(session))
2302
except (TypeError, gnutls.Error) as error:
2303
logger.warning("Bad certificate: %s", error)
2304
return
2305
logger.debug("Key ID: %s", key_id)
2306
2307
else:
2308
key_id = b""
2309
try:
2310
fpr = self.fingerprint(
2311
self.peer_certificate(session))
2312
except (TypeError, gnutls.Error) as error:
2313
logger.warning("Bad certificate: %s", error)
2314
return
2315
logger.debug("Fingerprint: %s", fpr)
2316
2317
try:
2318
client = ProxyClient(child_pipe, key_id, fpr,
1428
try:
1429
fpr = self.fingerprint(self.peer_certificate
1430
(session))
1431
except (TypeError,
1432
gnutls.errors.GNUTLSError) as error:
1433
logger.warning("Bad certificate: %s", error)
1434
return
1435
logger.debug("Fingerprint: %s", fpr)
1436
if self.server.use_dbus:
1437
# Emit D-Bus signal
1438
client.NewRequest(str(self.client_address))
1439
1440
try:
1441
client = ProxyClient(child_pipe, fpr,
2319
1442
self.client_address)
2320
1443
except KeyError:
2321
1444
return
2322
1445
2323
1446
if client.approval_delay:
2324
1447
delay = client.approval_delay
2325
1448
client.approvals_pending += 1
2326
1449
approval_required = True
2327
1450
2328
1451
while True:
2329
1452
if not client.enabled:
2330
1453
logger.info("Client %s is disabled",
2331
client.name)
1454
client.name)
2332
1455
if self.server.use_dbus:
2333
1456
# Emit D-Bus signal
2334
1457
client.Rejected("Disabled")
2335
1458
return
2336
2337
if client.approved or not client.approval_delay:
2338
# We are approved or approval is disabled
1459
1460
if client._approved or not client.approval_delay:
1461
#We are approved or approval is disabled
2339
1462
break
2340
elif client.approved is None:
1463
elif client._approved is None:
2341
1464
logger.info("Client %s needs approval",
2342
1465
client.name)
2343
1466
if self.server.use_dbus:
2344
1467
# Emit D-Bus signal
2345
1468
client.NeedApproval(
2346
client.approval_delay.total_seconds()
2347
* 1000, client.approved_by_default)
1469
client.approval_delay_milliseconds(),
1470
client.approved_by_default)
2348
1471
else:
2349
1472
logger.warning("Client %s was not approved",
2350
1473
client.name)
2352
1475
# Emit D-Bus signal
2353
1476
client.Rejected("Denied")
2354
1477
return
2355
2356
# wait until timeout or approved
1478
1479
#wait until timeout or approved
2357
1480
time = datetime.datetime.now()
2358
1481
client.changedstate.acquire()
2359
client.changedstate.wait(delay.total_seconds())
1482
(client.changedstate.wait
1483
(float(client._timedelta_to_milliseconds(delay)
1484
/ 1000)))
2360
1485
client.changedstate.release()
2361
1486
time2 = datetime.datetime.now()
2362
1487
if (time2 - time) >= delay:
2372
1497
break
2373
1498
else:
2374
1499
delay -= time2 - time
2375
2376
try:
2377
session.send(client.secret)
2378
except gnutls.Error as error:
2379
logger.warning("gnutls send failed",
2380
exc_info=error)
2381
return
2382
1500
1501
sent_size = 0
1502
while sent_size < len(client.secret):
1503
try:
1504
sent = session.send(client.secret[sent_size:])
1505
except gnutls.errors.GNUTLSError as error:
1506
logger.warning("gnutls send failed")
1507
return
1508
logger.debug("Sent: %d, remaining: %d",
1509
sent, len(client.secret)
1510
- (sent_size + sent))
1511
sent_size += sent
1512
2383
1513
logger.info("Sending secret to %s", client.name)
2384
1514
# bump the timeout using extended_timeout
2385
client.bump_timeout(client.extended_timeout)
1515
client.checked_ok(client.extended_timeout)
2386
1516
if self.server.use_dbus:
2387
1517
# Emit D-Bus signal
2388
1518
client.GotSecret()
2389
1519
2390
1520
finally:
2391
1521
if approval_required:
2392
1522
client.approvals_pending -= 1
2393
1523
try:
2394
1524
session.bye()
2395
except gnutls.Error as error:
2396
logger.warning("GnuTLS bye failed",
2397
exc_info=error)
2398
1525
except gnutls.errors.GNUTLSError as error:
1526
logger.warning("GnuTLS bye failed")
1527
2399
1528
@staticmethod
2400
1529
def peer_certificate(session):
2401
"Return the peer's certificate as a bytestring"
2402
try:
2403
cert_type = gnutls.certificate_type_get2(session._c_object,
2404
gnutls.CTYPE_PEERS)
2405
except AttributeError:
2406
cert_type = gnutls.certificate_type_get(session._c_object)
2407
if gnutls.has_rawpk:
2408
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2409
else:
2410
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2411
# If not a valid certificate type...
2412
if cert_type not in valid_cert_types:
2413
logger.info("Cert type %r not in %r", cert_type,
2414
valid_cert_types)
2415
# ...return invalid data
2416
return b""
1530
"Return the peer's OpenPGP certificate as a bytestring"
1531
# If not an OpenPGP certificate...
1532
if (gnutls.library.functions
1533
.gnutls_certificate_type_get(session._c_object)
1534
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1535
# ...do the normal thing
1536
return session.peer_certificate
2417
1537
list_size = ctypes.c_uint(1)
2418
cert_list = (gnutls.certificate_get_peers
1538
cert_list = (gnutls.library.functions
1539
.gnutls_certificate_get_peers
2419
1540
(session._c_object, ctypes.byref(list_size)))
2420
1541
if not bool(cert_list) and list_size.value != 0:
2421
raise gnutls.Error("error getting peer certificate")
1542
raise gnutls.errors.GNUTLSError("error getting peer"
1543
" certificate")
2422
1544
if list_size.value == 0:
2423
1545
return None
2424
1546
cert = cert_list[0]
2425
1547
return ctypes.string_at(cert.data, cert.size)
2426
2427
@staticmethod
2428
def key_id(certificate):
2429
"Convert a certificate bytestring to a hexdigit key ID"
2430
# New GnuTLS "datum" with the public key
2431
datum = gnutls.datum_t(
2432
ctypes.cast(ctypes.c_char_p(certificate),
2433
ctypes.POINTER(ctypes.c_ubyte)),
2434
ctypes.c_uint(len(certificate)))
2435
# XXX all these need to be created in the gnutls "module"
2436
# New empty GnuTLS certificate
2437
pubkey = gnutls.pubkey_t()
2438
gnutls.pubkey_init(ctypes.byref(pubkey))
2439
# Import the raw public key into the certificate
2440
gnutls.pubkey_import(pubkey,
2441
ctypes.byref(datum),
2442
gnutls.X509_FMT_DER)
2443
# New buffer for the key ID
2444
buf = ctypes.create_string_buffer(32)
2445
buf_len = ctypes.c_size_t(len(buf))
2446
# Get the key ID from the raw public key into the buffer
2447
gnutls.pubkey_get_key_id(pubkey,
2448
gnutls.KEYID_USE_SHA256,
2449
ctypes.cast(ctypes.byref(buf),
2450
ctypes.POINTER(ctypes.c_ubyte)),
2451
ctypes.byref(buf_len))
2452
# Deinit the certificate
2453
gnutls.pubkey_deinit(pubkey)
2454
2455
# Convert the buffer to a Python bytestring
2456
key_id = ctypes.string_at(buf, buf_len.value)
2457
# Convert the bytestring to hexadecimal notation
2458
hex_key_id = binascii.hexlify(key_id).upper()
2459
return hex_key_id
2460
1548
2461
1549
@staticmethod
2462
1550
def fingerprint(openpgp):
2463
1551
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2464
1552
# New GnuTLS "datum" with the OpenPGP public key
2465
datum = gnutls.datum_t(
2466
ctypes.cast(ctypes.c_char_p(openpgp),
2467
ctypes.POINTER(ctypes.c_ubyte)),
2468
ctypes.c_uint(len(openpgp)))
1553
datum = (gnutls.library.types
1554
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1555
ctypes.POINTER
1556
(ctypes.c_ubyte)),
1557
ctypes.c_uint(len(openpgp))))
2469
1558
# New empty GnuTLS certificate
2470
crt = gnutls.openpgp_crt_t()
2471
gnutls.openpgp_crt_init(ctypes.byref(crt))
1559
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1560
(gnutls.library.functions
1561
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2472
1562
# Import the OpenPGP public key into the certificate
2473
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2474
gnutls.OPENPGP_FMT_RAW)
1563
(gnutls.library.functions
1564
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1565
gnutls.library.constants
1566
.GNUTLS_OPENPGP_FMT_RAW))
2475
1567
# Verify the self signature in the key
2476
1568
crtverify = ctypes.c_uint()
2477
gnutls.openpgp_crt_verify_self(crt, 0,
2478
ctypes.byref(crtverify))
1569
(gnutls.library.functions
1570
.gnutls_openpgp_crt_verify_self(crt, 0,
1571
ctypes.byref(crtverify)))
2479
1572
if crtverify.value != 0:
2480
gnutls.openpgp_crt_deinit(crt)
2481
raise gnutls.CertificateSecurityError(code
2482
=crtverify.value)
1573
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1574
raise (gnutls.errors.CertificateSecurityError
1575
("Verify failed"))
2483
1576
# New buffer for the fingerprint
2484
1577
buf = ctypes.create_string_buffer(20)
2485
1578
buf_len = ctypes.c_size_t()
2486
1579
# Get the fingerprint from the certificate into the buffer
2487
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2488
ctypes.byref(buf_len))
1580
(gnutls.library.functions
1581
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1582
ctypes.byref(buf_len)))
2489
1583
# Deinit the certificate
2490
gnutls.openpgp_crt_deinit(crt)
1584
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2491
1585
# Convert the buffer to a Python bytestring
2492
1586
fpr = ctypes.string_at(buf, buf_len.value)
2493
1587
# Convert the bytestring to hexadecimal notation
2494
hex_fpr = binascii.hexlify(fpr).upper()
1588
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
2495
1589
return hex_fpr
2496
1590
2497
1591
2498
class MultiprocessingMixIn:
1592
class MultiprocessingMixIn(object):
2499
1593
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2500
2501
1594
def sub_process_main(self, request, address):
2502
1595
try:
2503
1596
self.finish_request(request, address)
2504
except Exception:
1597
except:
2505
1598
self.handle_error(request, address)
2506
1599
self.close_request(request)
2507
1600
2508
1601
def process_request(self, request, address):
2509
1602
"""Start a new process to process the request."""
2510
proc = multiprocessing.Process(target=self.sub_process_main,
2511
args=(request, address))
1603
proc = multiprocessing.Process(target = self.sub_process_main,
1604
args = (request,
1605
address))
2512
1606
proc.start()
2513
1607
return proc
2514
1608
2515
1609
2516
class MultiprocessingMixInWithPipe(MultiprocessingMixIn):
1610
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2517
1611
""" adds a pipe to the MixIn """
2518
2519
1612
def process_request(self, request, client_address):
2520
1613
"""Overrides and wraps the original process_request().
2521
1614
2522
1615
This function creates a new pipe in self.pipe
2523
1616
"""
2524
1617
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2525
1618
2526
1619
proc = MultiprocessingMixIn.process_request(self, request,
2527
1620
client_address)
2528
1621
self.child_pipe.close()
2529
1622
self.add_pipe(parent_pipe, proc)
2530
1623
2531
1624
def add_pipe(self, parent_pipe, proc):
2532
1625
"""Dummy function; override as necessary"""
2533
raise NotImplementedError()
1626
raise NotImplementedError
2534
1627
2535
1628
2536
1629
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2537
socketserver.TCPServer):
1630
socketserver.TCPServer, object):
2538
1631
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
2539
1632
2540
1633
Attributes:
2541
1634
enabled: Boolean; whether this server is activated yet
2542
1635
interface: None or a network interface name (string)
2543
1636
use_ipv6: Boolean; to use IPv6 or not
2544
1637
"""
2545
2546
1638
def __init__(self, server_address, RequestHandlerClass,
2547
interface=None,
2548
use_ipv6=True,
2549
socketfd=None):
2550
"""If socketfd is set, use that file descriptor instead of
2551
creating a new one with socket.socket().
2552
"""
1639
interface=None, use_ipv6=True):
2553
1640
self.interface = interface
2554
1641
if use_ipv6:
2555
1642
self.address_family = socket.AF_INET6
2556
if socketfd is not None:
2557
# Save the file descriptor
2558
self.socketfd = socketfd
2559
# Save the original socket.socket() function
2560
self.socket_socket = socket.socket
2561
2562
# To implement --socket, we monkey patch socket.socket.
2563
#
2564
# (When socketserver.TCPServer is a new-style class, we
2565
# could make self.socket into a property instead of monkey
2566
# patching socket.socket.)
2567
#
2568
# Create a one-time-only replacement for socket.socket()
2569
@functools.wraps(socket.socket)
2570
def socket_wrapper(*args, **kwargs):
2571
# Restore original function so subsequent calls are
2572
# not affected.
2573
socket.socket = self.socket_socket
2574
del self.socket_socket
2575
# This time only, return a new socket object from the
2576
# saved file descriptor.
2577
return socket.fromfd(self.socketfd, *args, **kwargs)
2578
# Replace socket.socket() function with wrapper
2579
socket.socket = socket_wrapper
2580
# The socketserver.TCPServer.__init__ will call
2581
# socket.socket(), which might be our replacement,
2582
# socket_wrapper(), if socketfd was set.
2583
1643
socketserver.TCPServer.__init__(self, server_address,
2584
1644
RequestHandlerClass)
2585
2586
1645
def server_bind(self):
2587
1646
"""This overrides the normal server_bind() function
2588
1647
to bind to an interface if one was specified, and also NOT to
2589
1648
bind to an address or port if they were not specified."""
2590
global SO_BINDTODEVICE
2591
1649
if self.interface is not None:
2592
1650
if SO_BINDTODEVICE is None:
2593
# Fall back to a hard-coded value which seems to be
2594
# common enough.
2595
logger.warning("SO_BINDTODEVICE not found, trying 25")
2596
SO_BINDTODEVICE = 25
2597
try:
2598
self.socket.setsockopt(
2599
socket.SOL_SOCKET, SO_BINDTODEVICE,
2600
(self.interface + "\0").encode("utf-8"))
2601
except socket.error as error:
2602
if error.errno == errno.EPERM:
2603
logger.error("No permission to bind to"
2604
" interface %s", self.interface)
2605
elif error.errno == errno.ENOPROTOOPT:
2606
logger.error("SO_BINDTODEVICE not available;"
2607
" cannot bind to interface %s",
2608
self.interface)
2609
elif error.errno == errno.ENODEV:
2610
logger.error("Interface %s does not exist,"
2611
" cannot bind", self.interface)
2612
else:
2613
raise
1651
logger.error("SO_BINDTODEVICE does not exist;"
1652
" cannot bind to interface %s",
1653
self.interface)
1654
else:
1655
try:
1656
self.socket.setsockopt(socket.SOL_SOCKET,
1657
SO_BINDTODEVICE,
1658
str(self.interface
1659
+ '\0'))
1660
except socket.error as error:
1661
if error[0] == errno.EPERM:
1662
logger.error("No permission to"
1663
" bind to interface %s",
1664
self.interface)
1665
elif error[0] == errno.ENOPROTOOPT:
1666
logger.error("SO_BINDTODEVICE not available;"
1667
" cannot bind to interface %s",
1668
self.interface)
1669
else:
1670
raise
2614
1671
# Only bind(2) the socket if we really need to.
2615
1672
if self.server_address[0] or self.server_address[1]:
2616
if self.server_address[1]:
2617
self.allow_reuse_address = True
2618
1673
if not self.server_address[0]:
2619
1674
if self.address_family == socket.AF_INET6:
2620
any_address = "::" # in6addr_any
1675
any_address = "::" # in6addr_any
2621
1676
else:
2622
any_address = "0.0.0.0" # INADDR_ANY
1677
any_address = socket.INADDR_ANY
2623
1678
self.server_address = (any_address,
2624
1679
self.server_address[1])
2625
1680
elif not self.server_address[1]:
2626
self.server_address = (self.server_address[0], 0)
1681
self.server_address = (self.server_address[0],
1682
0)
2627
1683
# if self.interface:
2628
1684
# self.server_address = (self.server_address[0],
2629
1685
# 0, # port
2635
1691
2636
1692
class MandosServer(IPv6_TCPServer):
2637
1693
"""Mandos server.
2638
1694
2639
1695
Attributes:
2640
1696
clients: set of Client objects
2641
1697
gnutls_priority GnuTLS priority string
2642
1698
use_dbus: Boolean; to emit D-Bus signals or not
2643
2644
Assumes a GLib.MainLoop event loop.
1699
1700
Assumes a gobject.MainLoop event loop.
2645
1701
"""
2646
2647
1702
def __init__(self, server_address, RequestHandlerClass,
2648
interface=None,
2649
use_ipv6=True,
2650
clients=None,
2651
gnutls_priority=None,
2652
use_dbus=True,
2653
socketfd=None):
1703
interface=None, use_ipv6=True, clients=None,
1704
gnutls_priority=None, use_dbus=True):
2654
1705
self.enabled = False
2655
1706
self.clients = clients
2656
1707
if self.clients is None:
2659
1710
self.gnutls_priority = gnutls_priority
2660
1711
IPv6_TCPServer.__init__(self, server_address,
2661
1712
RequestHandlerClass,
2662
interface=interface,
2663
use_ipv6=use_ipv6,
2664
socketfd=socketfd)
2665
1713
interface = interface,
1714
use_ipv6 = use_ipv6)
2666
1715
def server_activate(self):
2667
1716
if self.enabled:
2668
1717
return socketserver.TCPServer.server_activate(self)
2669
1718
2670
1719
def enable(self):
2671
1720
self.enabled = True
2672
1721
2673
1722
def add_pipe(self, parent_pipe, proc):
2674
1723
# Call "handle_ipc" for both data and EOF events
2675
GLib.io_add_watch(
2676
parent_pipe.fileno(),
2677
GLib.IO_IN | GLib.IO_HUP,
2678
functools.partial(self.handle_ipc,
2679
parent_pipe=parent_pipe,
2680
proc=proc))
2681
2682
def handle_ipc(self, source, condition,
2683
parent_pipe=None,
2684
proc=None,
2685
client_object=None):
1724
gobject.io_add_watch(parent_pipe.fileno(),
1725
gobject.IO_IN | gobject.IO_HUP,
1726
functools.partial(self.handle_ipc,
1727
parent_pipe =
1728
parent_pipe,
1729
proc = proc))
1730
1731
def handle_ipc(self, source, condition, parent_pipe=None,
1732
proc = None, client_object=None):
1733
condition_names = {
1734
gobject.IO_IN: "IN", # There is data to read.
1735
gobject.IO_OUT: "OUT", # Data can be written (without
1736
# blocking).
1737
gobject.IO_PRI: "PRI", # There is urgent data to read.
1738
gobject.IO_ERR: "ERR", # Error condition.
1739
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1740
# broken, usually for pipes and
1741
# sockets).
1742
}
1743
conditions_string = ' | '.join(name
1744
for cond, name in
1745
condition_names.iteritems()
1746
if cond & condition)
2686
1747
# error, or the other end of multiprocessing.Pipe has closed
2687
if condition & (GLib.IO_ERR | GLib.IO_HUP):
1748
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2688
1749
# Wait for other process to exit
2689
1750
proc.join()
2690
1751
return False
2691
1752
2692
1753
# Read a request from the child
2693
1754
request = parent_pipe.recv()
2694
1755
command = request[0]
2695
1756
2696
1757
if command == 'init':
2697
key_id = request[1].decode("ascii")
2698
fpr = request[2].decode("ascii")
2699
address = request[3]
2700
2701
for c in self.clients.values():
2702
if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2703
continue
2704
if key_id and c.key_id == key_id:
2705
client = c
2706
break
2707
if fpr and c.fingerprint == fpr:
1758
fpr = request[1]
1759
address = request[2]
1760
1761
for c in self.clients.itervalues():
1762
if c.fingerprint == fpr:
2708
1763
client = c
2709
1764
break
2710
1765
else:
2711
logger.info("Client not found for key ID: %s, address"
2712
": %s", key_id or fpr, address)
1766
logger.info("Client not found for fingerprint: %s, ad"
1767
"dress: %s", fpr, address)
2713
1768
if self.use_dbus:
2714
1769
# Emit D-Bus signal
2715
mandos_dbus_service.ClientNotFound(key_id or fpr,
1770
mandos_dbus_service.ClientNotFound(fpr,
2716
1771
address[0])
2717
1772
parent_pipe.send(False)
2718
1773
return False
2719
2720
GLib.io_add_watch(
2721
parent_pipe.fileno(),
2722
GLib.IO_IN | GLib.IO_HUP,
2723
functools.partial(self.handle_ipc,
2724
parent_pipe=parent_pipe,
2725
proc=proc,
2726
client_object=client))
1774
1775
gobject.io_add_watch(parent_pipe.fileno(),
1776
gobject.IO_IN | gobject.IO_HUP,
1777
functools.partial(self.handle_ipc,
1778
parent_pipe =
1779
parent_pipe,
1780
proc = proc,
1781
client_object =
1782
client))
2727
1783
parent_pipe.send(True)
2728
1784
# remove the old hook in favor of the new above hook on
2729
1785
# same fileno
2732
1788
funcname = request[1]
2733
1789
args = request[2]
2734
1790
kwargs = request[3]
2735
1791
2736
1792
parent_pipe.send(('data', getattr(client_object,
2737
1793
funcname)(*args,
2738
**kwargs)))
2739
1794
**kwargs)))
1795
2740
1796
if command == 'getattr':
2741
1797
attrname = request[1]
2742
if isinstance(client_object.__getattribute__(attrname),
2743
collections.Callable):
2744
parent_pipe.send(('function', ))
1798
if callable(client_object.__getattribute__(attrname)):
1799
parent_pipe.send(('function',))
2745
1800
else:
2746
parent_pipe.send((
2747
'data', client_object.__getattribute__(attrname)))
2748
1801
parent_pipe.send(('data', client_object
1802
.__getattribute__(attrname)))
1803
2749
1804
if command == 'setattr':
2750
1805
attrname = request[1]
2751
1806
value = request[2]
2752
1807
setattr(client_object, attrname, value)
2753
1808
2754
1809
return True
2755
1810
2756
1811
2757
def rfc3339_duration_to_delta(duration):
2758
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2759
2760
>>> rfc3339_duration_to_delta("P7D")
2761
datetime.timedelta(7)
2762
>>> rfc3339_duration_to_delta("PT60S")
2763
datetime.timedelta(0, 60)
2764
>>> rfc3339_duration_to_delta("PT60M")
2765
datetime.timedelta(0, 3600)
2766
>>> rfc3339_duration_to_delta("PT24H")
2767
datetime.timedelta(1)
2768
>>> rfc3339_duration_to_delta("P1W")
2769
datetime.timedelta(7)
2770
>>> rfc3339_duration_to_delta("PT5M30S")
2771
datetime.timedelta(0, 330)
2772
>>> rfc3339_duration_to_delta("P1DT3M20S")
2773
datetime.timedelta(1, 200)
2774
"""
2775
2776
# Parsing an RFC 3339 duration with regular expressions is not
2777
# possible - there would have to be multiple places for the same
2778
# values, like seconds. The current code, while more esoteric, is
2779
# cleaner without depending on a parsing library. If Python had a
2780
# built-in library for parsing we would use it, but we'd like to
2781
# avoid excessive use of external libraries.
2782
2783
# New type for defining tokens, syntax, and semantics all-in-one
2784
Token = collections.namedtuple("Token", (
2785
"regexp", # To match token; if "value" is not None, must have
2786
# a "group" containing digits
2787
"value", # datetime.timedelta or None
2788
"followers")) # Tokens valid after this token
2789
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2790
# the "duration" ABNF definition in RFC 3339, Appendix A.
2791
token_end = Token(re.compile(r"$"), None, frozenset())
2792
token_second = Token(re.compile(r"(\d+)S"),
2793
datetime.timedelta(seconds=1),
2794
frozenset((token_end, )))
2795
token_minute = Token(re.compile(r"(\d+)M"),
2796
datetime.timedelta(minutes=1),
2797
frozenset((token_second, token_end)))
2798
token_hour = Token(re.compile(r"(\d+)H"),
2799
datetime.timedelta(hours=1),
2800
frozenset((token_minute, token_end)))
2801
token_time = Token(re.compile(r"T"),
2802
None,
2803
frozenset((token_hour, token_minute,
2804
token_second)))
2805
token_day = Token(re.compile(r"(\d+)D"),
2806
datetime.timedelta(days=1),
2807
frozenset((token_time, token_end)))
2808
token_month = Token(re.compile(r"(\d+)M"),
2809
datetime.timedelta(weeks=4),
2810
frozenset((token_day, token_end)))
2811
token_year = Token(re.compile(r"(\d+)Y"),
2812
datetime.timedelta(weeks=52),
2813
frozenset((token_month, token_end)))
2814
token_week = Token(re.compile(r"(\d+)W"),
2815
datetime.timedelta(weeks=1),
2816
frozenset((token_end, )))
2817
token_duration = Token(re.compile(r"P"), None,
2818
frozenset((token_year, token_month,
2819
token_day, token_time,
2820
token_week)))
2821
# Define starting values:
2822
# Value so far
2823
value = datetime.timedelta()
2824
found_token = None
2825
# Following valid tokens
2826
followers = frozenset((token_duration, ))
2827
# String left to parse
2828
s = duration
2829
# Loop until end token is found
2830
while found_token is not token_end:
2831
# Search for any currently valid tokens
2832
for token in followers:
2833
match = token.regexp.match(s)
2834
if match is not None:
2835
# Token found
2836
if token.value is not None:
2837
# Value found, parse digits
2838
factor = int(match.group(1), 10)
2839
# Add to value so far
2840
value += factor * token.value
2841
# Strip token from string
2842
s = token.regexp.sub("", s, 1)
2843
# Go to found token
2844
found_token = token
2845
# Set valid next tokens
2846
followers = found_token.followers
2847
break
2848
else:
2849
# No currently valid tokens were found
2850
raise ValueError("Invalid RFC 3339 duration: {!r}"
2851
.format(duration))
2852
# End token found
2853
return value
2854
2855
2856
1812
def string_to_delta(interval):
2857
1813
"""Parse a string and return a datetime.timedelta
2858
1814
2859
1815
>>> string_to_delta('7d')
2860
1816
datetime.timedelta(7)
2861
1817
>>> string_to_delta('60s')
2869
1825
>>> string_to_delta('5m 30s')
2870
1826
datetime.timedelta(0, 330)
2871
1827
"""
2872
2873
try:
2874
return rfc3339_duration_to_delta(interval)
2875
except ValueError:
2876
pass
2877
2878
1828
timevalue = datetime.timedelta(0)
2879
1829
for s in interval.split():
2880
1830
try:
2881
suffix = s[-1]
1831
suffix = unicode(s[-1])
2882
1832
value = int(s[:-1])
2883
1833
if suffix == "d":
2884
1834
delta = datetime.timedelta(value)
2891
1841
elif suffix == "w":
2892
1842
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2893
1843
else:
2894
raise ValueError("Unknown suffix {!r}".format(suffix))
2895
except IndexError as e:
1844
raise ValueError("Unknown suffix %r" % suffix)
1845
except (ValueError, IndexError) as e:
2896
1846
raise ValueError(*(e.args))
2897
1847
timevalue += delta
2898
1848
return timevalue
2899
1849
2900
1850
2901
def daemon(nochdir=False, noclose=False):
1851
def if_nametoindex(interface):
1852
"""Call the C function if_nametoindex(), or equivalent
1853
1854
Note: This function cannot accept a unicode string."""
1855
global if_nametoindex
1856
try:
1857
if_nametoindex = (ctypes.cdll.LoadLibrary
1858
(ctypes.util.find_library("c"))
1859
.if_nametoindex)
1860
except (OSError, AttributeError):
1861
logger.warning("Doing if_nametoindex the hard way")
1862
def if_nametoindex(interface):
1863
"Get an interface index the hard way, i.e. using fcntl()"
1864
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1865
with contextlib.closing(socket.socket()) as s:
1866
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1867
struct.pack(str("16s16x"),
1868
interface))
1869
interface_index = struct.unpack(str("I"),
1870
ifreq[16:20])[0]
1871
return interface_index
1872
return if_nametoindex(interface)
1873
1874
1875
def daemon(nochdir = False, noclose = False):
2902
1876
"""See daemon(3). Standard BSD Unix function.
2903
1877
2904
1878
This should really exist as os.daemon, but it doesn't (yet)."""
2905
1879
if os.fork():
2906
1880
sys.exit()
2911
1885
sys.exit()
2912
1886
if not noclose:
2913
1887
# Close all standard open file descriptors
2914
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1888
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2915
1889
if not stat.S_ISCHR(os.fstat(null).st_mode):
2916
1890
raise OSError(errno.ENODEV,
2917
"{} not a character device"
2918
.format(os.devnull))
1891
"%s not a character device"
1892
% os.path.devnull)
2919
1893
os.dup2(null, sys.stdin.fileno())
2920
1894
os.dup2(null, sys.stdout.fileno())
2921
1895
os.dup2(null, sys.stderr.fileno())
2924
1898
2925
1899
2926
1900
def main():
2927
1901
2928
1902
##################################################################
2929
1903
# Parsing of options, both command line and config file
2930
1904
2931
1905
parser = argparse.ArgumentParser()
2932
1906
parser.add_argument("-v", "--version", action="version",
2933
version="%(prog)s {}".format(version),
1907
version = "%%(prog)s %s" % version,
2934
1908
help="show version number and exit")
2935
1909
parser.add_argument("-i", "--interface", metavar="IF",
2936
1910
help="Bind to interface IF")
2942
1916
help="Run self-test")
2943
1917
parser.add_argument("--debug", action="store_true",
2944
1918
help="Debug mode; run in foreground and log"
2945
" to terminal", default=None)
1919
" to terminal")
2946
1920
parser.add_argument("--debuglevel", metavar="LEVEL",
2947
1921
help="Debug level for stdout output")
2948
1922
parser.add_argument("--priority", help="GnuTLS"
2955
1929
" files")
2956
1930
parser.add_argument("--no-dbus", action="store_false",
2957
1931
dest="use_dbus", help="Do not provide D-Bus"
2958
" system bus interface", default=None)
1932
" system bus interface")
2959
1933
parser.add_argument("--no-ipv6", action="store_false",
2960
dest="use_ipv6", help="Do not use IPv6",
2961
default=None)
1934
dest="use_ipv6", help="Do not use IPv6")
2962
1935
parser.add_argument("--no-restore", action="store_false",
2963
dest="restore", help="Do not restore stored"
2964
" state", default=None)
2965
parser.add_argument("--socket", type=int,
2966
help="Specify a file descriptor to a network"
2967
" socket to use instead of creating one")
2968
parser.add_argument("--statedir", metavar="DIR",
2969
help="Directory to save/restore state in")
2970
parser.add_argument("--foreground", action="store_true",
2971
help="Run in foreground", default=None)
2972
parser.add_argument("--no-zeroconf", action="store_false",
2973
dest="zeroconf", help="Do not use Zeroconf",
2974
default=None)
1936
dest="restore", help="Do not restore stored state",
1937
default=True)
2975
1938
2976
1939
options = parser.parse_args()
2977
1940
2978
1941
if options.check:
2979
1942
import doctest
2980
fail_count, test_count = doctest.testmod()
2981
sys.exit(os.EX_OK if fail_count == 0 else 1)
2982
1943
doctest.testmod()
1944
sys.exit()
1945
2983
1946
# Default values for config file for server-global settings
2984
if gnutls.has_rawpk:
2985
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
2986
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
2987
else:
2988
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2989
":+SIGN-DSA-SHA256")
2990
server_defaults = {"interface": "",
2991
"address": "",
2992
"port": "",
2993
"debug": "False",
2994
"priority": priority,
2995
"servicename": "Mandos",
2996
"use_dbus": "True",
2997
"use_ipv6": "True",
2998
"debuglevel": "",
2999
"restore": "True",
3000
"socket": "",
3001
"statedir": "/var/lib/mandos",
3002
"foreground": "False",
3003
"zeroconf": "True",
3004
}
3005
del priority
3006
1947
server_defaults = { "interface": "",
1948
"address": "",
1949
"port": "",
1950
"debug": "False",
1951
"priority":
1952
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1953
"servicename": "Mandos",
1954
"use_dbus": "True",
1955
"use_ipv6": "True",
1956
"debuglevel": "",
1957
}
1958
3007
1959
# Parse config file for server-global settings
3008
server_config = configparser.ConfigParser(server_defaults)
1960
server_config = configparser.SafeConfigParser(server_defaults)
3009
1961
del server_defaults
3010
server_config.read(os.path.join(options.configdir, "mandos.conf"))
3011
# Convert the ConfigParser object to a dict
1962
server_config.read(os.path.join(options.configdir,
1963
"mandos.conf"))
1964
# Convert the SafeConfigParser object to a dict
3012
1965
server_settings = server_config.defaults()
3013
1966
# Use the appropriate methods on the non-string config options
3014
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3015
"foreground", "zeroconf"):
1967
for option in ("debug", "use_dbus", "use_ipv6"):
3016
1968
server_settings[option] = server_config.getboolean("DEFAULT",
3017
1969
option)
3018
1970
if server_settings["port"]:
3019
1971
server_settings["port"] = server_config.getint("DEFAULT",
3020
1972
"port")
3021
if server_settings["socket"]:
3022
server_settings["socket"] = server_config.getint("DEFAULT",
3023
"socket")
3024
# Later, stdin will, and stdout and stderr might, be dup'ed
3025
# over with an opened os.devnull. But we don't want this to
3026
# happen with a supplied network socket.
3027
if 0 <= server_settings["socket"] <= 2:
3028
server_settings["socket"] = os.dup(server_settings
3029
["socket"])
3030
1973
del server_config
3031
1974
3032
1975
# Override the settings from the config file with command line
3033
1976
# options, if set.
3034
1977
for option in ("interface", "address", "port", "debug",
3035
"priority", "servicename", "configdir", "use_dbus",
3036
"use_ipv6", "debuglevel", "restore", "statedir",
3037
"socket", "foreground", "zeroconf"):
1978
"priority", "servicename", "configdir",
1979
"use_dbus", "use_ipv6", "debuglevel", "restore"):
3038
1980
value = getattr(options, option)
3039
1981
if value is not None:
3040
1982
server_settings[option] = value
3041
1983
del options
3042
1984
# Force all strings to be unicode
3043
1985
for option in server_settings.keys():
3044
if isinstance(server_settings[option], bytes):
3045
server_settings[option] = (server_settings[option]
3046
.decode("utf-8"))
3047
# Force all boolean options to be boolean
3048
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3049
"foreground", "zeroconf"):
3050
server_settings[option] = bool(server_settings[option])
3051
# Debug implies foreground
3052
if server_settings["debug"]:
3053
server_settings["foreground"] = True
1986
if type(server_settings[option]) is str:
1987
server_settings[option] = unicode(server_settings[option])
3054
1988
# Now we have our good server settings in "server_settings"
3055
1989
3056
1990
##################################################################
3057
3058
if (not server_settings["zeroconf"]
3059
and not (server_settings["port"]
3060
or server_settings["socket"] != "")):
3061
parser.error("Needs port or socket to work without Zeroconf")
3062
1991
3063
1992
# For convenience
3064
1993
debug = server_settings["debug"]
3065
1994
debuglevel = server_settings["debuglevel"]
3066
1995
use_dbus = server_settings["use_dbus"]
3067
1996
use_ipv6 = server_settings["use_ipv6"]
3068
stored_state_path = os.path.join(server_settings["statedir"],
3069
stored_state_file)
3070
foreground = server_settings["foreground"]
3071
zeroconf = server_settings["zeroconf"]
3072
3073
if debug:
3074
initlogger(debug, logging.DEBUG)
3075
else:
3076
if not debuglevel:
3077
initlogger(debug)
3078
else:
3079
level = getattr(logging, debuglevel.upper())
3080
initlogger(debug, level)
3081
1997
3082
1998
if server_settings["servicename"] != "Mandos":
3083
syslogger.setFormatter(
3084
logging.Formatter('Mandos ({}) [%(process)d]:'
3085
' %(levelname)s: %(message)s'.format(
3086
server_settings["servicename"])))
3087
1999
syslogger.setFormatter(logging.Formatter
2000
('Mandos (%s) [%%(process)d]:'
2001
' %%(levelname)s: %%(message)s'
2002
% server_settings["servicename"]))
2003
3088
2004
# Parse config file with clients
3089
client_config = configparser.ConfigParser(Client.client_defaults)
2005
client_defaults = { "timeout": "5m",
2006
"extended_timeout": "15m",
2007
"interval": "2m",
2008
"checker": "fping -q -- %%(host)s",
2009
"host": "",
2010
"approval_delay": "0s",
2011
"approval_duration": "1s",
2012
}
2013
client_config = configparser.SafeConfigParser(client_defaults)
3090
2014
client_config.read(os.path.join(server_settings["configdir"],
3091
2015
"clients.conf"))
3092
2016
3093
2017
global mandos_dbus_service
3094
2018
mandos_dbus_service = None
3095
3096
socketfd = None
3097
if server_settings["socket"] != "":
3098
socketfd = server_settings["socket"]
3099
tcp_server = MandosServer(
3100
(server_settings["address"], server_settings["port"]),
3101
ClientHandler,
3102
interface=(server_settings["interface"] or None),
3103
use_ipv6=use_ipv6,
3104
gnutls_priority=server_settings["priority"],
3105
use_dbus=use_dbus,
3106
socketfd=socketfd)
3107
if not foreground:
3108
pidfilename = "/run/mandos.pid"
3109
if not os.path.isdir("/run/."):
3110
pidfilename = "/var/run/mandos.pid"
3111
pidfile = None
3112
try:
3113
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3114
except IOError as e:
3115
logger.error("Could not open file %r", pidfilename,
3116
exc_info=e)
3117
3118
for name, group in (("_mandos", "_mandos"),
3119
("mandos", "mandos"),
3120
("nobody", "nogroup")):
3121
try:
3122
uid = pwd.getpwnam(name).pw_uid
3123
gid = pwd.getpwnam(group).pw_gid
3124
break
2019
2020
tcp_server = MandosServer((server_settings["address"],
2021
server_settings["port"]),
2022
ClientHandler,
2023
interface=(server_settings["interface"]
2024
or None),
2025
use_ipv6=use_ipv6,
2026
gnutls_priority=
2027
server_settings["priority"],
2028
use_dbus=use_dbus)
2029
if not debug:
2030
pidfilename = "/var/run/mandos.pid"
2031
try:
2032
pidfile = open(pidfilename, "w")
2033
except IOError:
2034
logger.error("Could not open file %r", pidfilename)
2035
2036
try:
2037
uid = pwd.getpwnam("_mandos").pw_uid
2038
gid = pwd.getpwnam("_mandos").pw_gid
2039
except KeyError:
2040
try:
2041
uid = pwd.getpwnam("mandos").pw_uid
2042
gid = pwd.getpwnam("mandos").pw_gid
3125
2043
except KeyError:
3126
continue
3127
else:
3128
uid = 65534
3129
gid = 65534
2044
try:
2045
uid = pwd.getpwnam("nobody").pw_uid
2046
gid = pwd.getpwnam("nobody").pw_gid
2047
except KeyError:
2048
uid = 65534
2049
gid = 65534
3130
2050
try:
3131
2051
os.setgid(gid)
3132
2052
os.setuid(uid)
3133
if debug:
3134
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3135
gid))
3136
2053
except OSError as error:
3137
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3138
.format(uid, gid, os.strerror(error.errno)))
3139
if error.errno != errno.EPERM:
3140
raise
3141
2054
if error[0] != errno.EPERM:
2055
raise error
2056
2057
if not debug and not debuglevel:
2058
logger.setLevel(logging.WARNING)
2059
if debuglevel:
2060
level = getattr(logging, debuglevel.upper())
2061
logger.setLevel(level)
2062
3142
2063
if debug:
2064
logger.setLevel(logging.DEBUG)
3143
2065
# Enable all possible GnuTLS debugging
3144
2066
3145
2067
# "Use a log level over 10 to enable all debugging options."
3146
2068
# - GnuTLS manual
3147
gnutls.global_set_log_level(11)
3148
3149
@gnutls.log_func
2069
gnutls.library.functions.gnutls_global_set_log_level(11)
2070
2071
@gnutls.library.types.gnutls_log_func
3150
2072
def debug_gnutls(level, string):
3151
2073
logger.debug("GnuTLS: %s", string[:-1])
3152
3153
gnutls.global_set_log_function(debug_gnutls)
3154
2074
2075
(gnutls.library.functions
2076
.gnutls_global_set_log_function(debug_gnutls))
2077
3155
2078
# Redirect stdin so all checkers get /dev/null
3156
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2079
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3157
2080
os.dup2(null, sys.stdin.fileno())
3158
2081
if null > 2:
3159
2082
os.close(null)
3160
2083
else:
2084
# No console logging
2085
logger.removeHandler(console)
2086
3161
2087
# Need to fork before connecting to D-Bus
3162
if not foreground:
2088
if not debug:
3163
2089
# Close all input and output, do double fork, etc.
3164
2090
daemon()
3165
3166
if gi.version_info < (3, 10, 2):
3167
# multiprocessing will use threads, so before we use GLib we
3168
# need to inform GLib that threads will be used.
3169
GLib.threads_init()
3170
2091
3171
2092
global main_loop
3172
2093
# From the Avahi example code
3173
DBusGMainLoop(set_as_default=True)
3174
main_loop = GLib.MainLoop()
2094
DBusGMainLoop(set_as_default=True )
2095
main_loop = gobject.MainLoop()
3175
2096
bus = dbus.SystemBus()
3176
2097
# End of Avahi example code
3177
2098
if use_dbus:
3178
2099
try:
3179
2100
bus_name = dbus.service.BusName("se.recompile.Mandos",
3180
bus,
3181
do_not_queue=True)
3182
old_bus_name = dbus.service.BusName(
3183
"se.bsnet.fukt.Mandos", bus,
3184
do_not_queue=True)
3185
except dbus.exceptions.DBusException as e:
3186
logger.error("Disabling D-Bus:", exc_info=e)
2101
bus, do_not_queue=True)
2102
old_bus_name = (dbus.service.BusName
2103
("se.bsnet.fukt.Mandos", bus,
2104
do_not_queue=True))
2105
except dbus.exceptions.NameExistsException as e:
2106
logger.error(unicode(e) + ", disabling D-Bus")
3187
2107
use_dbus = False
3188
2108
server_settings["use_dbus"] = False
3189
2109
tcp_server.use_dbus = False
3190
if zeroconf:
3191
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3192
service = AvahiServiceToSyslog(
3193
name=server_settings["servicename"],
3194
servicetype="_mandos._tcp",
3195
protocol=protocol,
3196
bus=bus)
3197
if server_settings["interface"]:
3198
service.interface = if_nametoindex(
3199
server_settings["interface"].encode("utf-8"))
3200
2110
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2111
service = AvahiServiceToSyslog(name =
2112
server_settings["servicename"],
2113
servicetype = "_mandos._tcp",
2114
protocol = protocol, bus = bus)
2115
if server_settings["interface"]:
2116
service.interface = (if_nametoindex
2117
(str(server_settings["interface"])))
2118
3201
2119
global multiprocessing_manager
3202
2120
multiprocessing_manager = multiprocessing.Manager()
3203
2121
3204
2122
client_class = Client
3205
2123
if use_dbus:
3206
client_class = functools.partial(ClientDBus, bus=bus)
3207
3208
client_settings = Client.config_parser(client_config)
2124
client_class = functools.partial(ClientDBusTransitional,
2125
bus = bus)
2126
2127
special_settings = {
2128
# Some settings need to be accessd by special methods;
2129
# booleans need .getboolean(), etc. Here is a list of them:
2130
"approved_by_default":
2131
lambda section:
2132
client_config.getboolean(section, "approved_by_default"),
2133
}
2134
# Construct a new dict of client settings of this form:
2135
# { client_name: {setting_name: value, ...}, ...}
2136
# with exceptions for any special settings as defined above
2137
client_settings = dict((clientname,
2138
dict((setting,
2139
(value if setting not in special_settings
2140
else special_settings[setting](clientname)))
2141
for setting, value in client_config.items(clientname)))
2142
for clientname in client_config.sections())
2143
3209
2144
old_client_settings = {}
3210
clients_data = {}
3211
3212
# This is used to redirect stdout and stderr for checker processes
3213
global wnull
3214
wnull = open(os.devnull, "w") # A writable /dev/null
3215
# Only used if server is running in foreground but not in debug
3216
# mode
3217
if debug or not foreground:
3218
wnull.close()
3219
3220
# Get client data and settings from last running state.
2145
clients_data = []
2146
2147
# Get client data and settings from last running state.
3221
2148
if server_settings["restore"]:
3222
2149
try:
3223
2150
with open(stored_state_path, "rb") as stored_state:
3224
if sys.version_info.major == 2:
3225
clients_data, old_client_settings = pickle.load(
3226
stored_state)
3227
else:
3228
bytes_clients_data, bytes_old_client_settings = (
3229
pickle.load(stored_state, encoding="bytes"))
3230
# Fix bytes to strings
3231
# clients_data
3232
# .keys()
3233
clients_data = {(key.decode("utf-8")
3234
if isinstance(key, bytes)
3235
else key): value
3236
for key, value in
3237
bytes_clients_data.items()}
3238
del bytes_clients_data
3239
for key in clients_data:
3240
value = {(k.decode("utf-8")
3241
if isinstance(k, bytes) else k): v
3242
for k, v in
3243
clients_data[key].items()}
3244
clients_data[key] = value
3245
# .client_structure
3246
value["client_structure"] = [
3247
(s.decode("utf-8")
3248
if isinstance(s, bytes)
3249
else s) for s in
3250
value["client_structure"]]
3251
# .name & .host
3252
for k in ("name", "host"):
3253
if isinstance(value[k], bytes):
3254
value[k] = value[k].decode("utf-8")
3255
if "key_id" not in value:
3256
value["key_id"] = ""
3257
elif "fingerprint" not in value:
3258
value["fingerprint"] = ""
3259
# old_client_settings
3260
# .keys()
3261
old_client_settings = {
3262
(key.decode("utf-8")
3263
if isinstance(key, bytes)
3264
else key): value
3265
for key, value in
3266
bytes_old_client_settings.items()}
3267
del bytes_old_client_settings
3268
# .host
3269
for value in old_client_settings.values():
3270
if isinstance(value["host"], bytes):
3271
value["host"] = (value["host"]
3272
.decode("utf-8"))
2151
clients_data, old_client_settings = pickle.load(stored_state)
3273
2152
os.remove(stored_state_path)
3274
2153
except IOError as e:
3275
if e.errno == errno.ENOENT:
3276
logger.warning("Could not load persistent state:"
3277
" {}".format(os.strerror(e.errno)))
3278
else:
3279
logger.critical("Could not load persistent state:",
3280
exc_info=e)
2154
logger.warning("Could not load persistant state: {0}".format(e))
2155
if e.errno != errno.ENOENT:
3281
2156
raise
3282
except EOFError as e:
3283
logger.warning("Could not load persistent state: "
3284
"EOFError:",
3285
exc_info=e)
3286
3287
with PGPEngine() as pgp:
3288
for client_name, client in clients_data.items():
3289
# Skip removed clients
3290
if client_name not in client_settings:
3291
continue
3292
3293
# Decide which value to use after restoring saved state.
3294
# We have three different values: Old config file,
3295
# new config file, and saved state.
3296
# New config value takes precedence if it differs from old
3297
# config value, otherwise use saved state.
3298
for name, value in client_settings[client_name].items():
3299
try:
3300
# For each value in new config, check if it
3301
# differs from the old config value (Except for
3302
# the "secret" attribute)
3303
if (name != "secret"
3304
and (value !=
3305
old_client_settings[client_name][name])):
3306
client[name] = value
3307
except KeyError:
3308
pass
3309
3310
# Clients who has passed its expire date can still be
3311
# enabled if its last checker was successful. A Client
3312
# whose checker succeeded before we stored its state is
3313
# assumed to have successfully run all checkers during
3314
# downtime.
3315
if client["enabled"]:
3316
if datetime.datetime.utcnow() >= client["expires"]:
3317
if not client["last_checked_ok"]:
3318
logger.warning(
3319
"disabling client {} - Client never "
3320
"performed a successful checker".format(
3321
client_name))
3322
client["enabled"] = False
3323
elif client["last_checker_status"] != 0:
3324
logger.warning(
3325
"disabling client {} - Client last"
3326
" checker failed with error code"
3327
" {}".format(
3328
client_name,
3329
client["last_checker_status"]))
3330
client["enabled"] = False
3331
else:
3332
client["expires"] = (
3333
datetime.datetime.utcnow()
3334
+ client["timeout"])
3335
logger.debug("Last checker succeeded,"
3336
" keeping {} enabled".format(
3337
client_name))
2157
2158
for client in clients_data:
2159
client_name = client["name"]
2160
2161
# Decide which value to use after restoring saved state.
2162
# We have three different values: Old config file,
2163
# new config file, and saved state.
2164
# New config value takes precedence if it differs from old
2165
# config value, otherwise use saved state.
2166
for name, value in client_settings[client_name].items():
3338
2167
try:
3339
client["secret"] = pgp.decrypt(
3340
client["encrypted_secret"],
3341
client_settings[client_name]["secret"])
3342
except PGPError:
3343
# If decryption fails, we use secret from new settings
3344
logger.debug("Failed to decrypt {} old secret".format(
3345
client_name))
3346
client["secret"] = (client_settings[client_name]
3347
["secret"])
3348
3349
# Add/remove clients based on new changes made to config
3350
for client_name in (set(old_client_settings)
3351
- set(client_settings)):
3352
del clients_data[client_name]
3353
for client_name in (set(client_settings)
3354
- set(old_client_settings)):
3355
clients_data[client_name] = client_settings[client_name]
3356
3357
# Create all client objects
3358
for client_name, client in clients_data.items():
3359
tcp_server.clients[client_name] = client_class(
3360
name=client_name,
3361
settings=client,
3362
server_settings=server_settings)
2168
# For each value in new config, check if it differs
2169
# from the old config value (Except for the "secret"
2170
# attribute)
2171
if name != "secret" and value != old_client_settings[client_name][name]:
2172
setattr(client, name, value)
2173
except KeyError:
2174
pass
2175
2176
# Clients who has passed its expire date, can still be enabled if its
2177
# last checker was sucessful. Clients who checkers failed before we
2178
# stored it state is asumed to had failed checker during downtime.
2179
if client["enabled"] and client["last_checked_ok"]:
2180
if ((datetime.datetime.utcnow() - client["last_checked_ok"])
2181
> client["interval"]):
2182
if client["last_checker_status"] != 0:
2183
client["enabled"] = False
2184
else:
2185
client["expires"] = datetime.datetime.utcnow() + client["timeout"]
2186
2187
client["changedstate"] = (multiprocessing_manager
2188
.Condition(multiprocessing_manager
2189
.Lock()))
2190
if use_dbus:
2191
new_client = ClientDBusTransitional.__new__(ClientDBusTransitional)
2192
tcp_server.clients[client_name] = new_client
2193
new_client.bus = bus
2194
for name, value in client.iteritems():
2195
setattr(new_client, name, value)
2196
client_object_name = unicode(client_name).translate(
2197
{ord("."): ord("_"),
2198
ord("-"): ord("_")})
2199
new_client.dbus_object_path = (dbus.ObjectPath
2200
("/clients/" + client_object_name))
2201
DBusObjectWithProperties.__init__(new_client,
2202
new_client.bus,
2203
new_client.dbus_object_path)
2204
else:
2205
tcp_server.clients[client_name] = Client.__new__(Client)
2206
for name, value in client.iteritems():
2207
setattr(tcp_server.clients[client_name], name, value)
2208
2209
tcp_server.clients[client_name].decrypt_secret(
2210
client_settings[client_name]["secret"])
2211
2212
# Create/remove clients based on new changes made to config
2213
for clientname in set(old_client_settings) - set(client_settings):
2214
del tcp_server.clients[clientname]
2215
for clientname in set(client_settings) - set(old_client_settings):
2216
tcp_server.clients[clientname] = (client_class(name = clientname,
2217
config =
2218
client_settings
2219
[clientname]))
2220
3363
2221
3364
2222
if not tcp_server.clients:
3365
2223
logger.warning("No clients defined")
3366
3367
if not foreground:
3368
if pidfile is not None:
3369
pid = os.getpid()
3370
try:
3371
with pidfile:
3372
print(pid, file=pidfile)
3373
except IOError:
3374
logger.error("Could not write to file %r with PID %d",
3375
pidfilename, pid)
3376
del pidfile
2224
2225
if not debug:
2226
try:
2227
with pidfile:
2228
pid = os.getpid()
2229
pidfile.write(str(pid) + "\n".encode("utf-8"))
2230
del pidfile
2231
except IOError:
2232
logger.error("Could not write to file %r with PID %d",
2233
pidfilename, pid)
2234
except NameError:
2235
# "pidfile" was never created
2236
pass
3377
2237
del pidfilename
3378
3379
for termsig in (signal.SIGHUP, signal.SIGTERM):
3380
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3381
lambda: main_loop.quit() and False)
3382
2238
2239
signal.signal(signal.SIGINT, signal.SIG_IGN)
2240
2241
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2242
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2243
3383
2244
if use_dbus:
3384
3385
@alternate_dbus_interfaces(
3386
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3387
class MandosDBusService(DBusObjectWithObjectManager):
2245
class MandosDBusService(dbus.service.Object):
3388
2246
"""A D-Bus proxy object"""
3389
3390
2247
def __init__(self):
3391
2248
dbus.service.Object.__init__(self, bus, "/")
3392
3393
2249
_interface = "se.recompile.Mandos"
3394
2250
3395
2251
@dbus.service.signal(_interface, signature="o")
3396
2252
def ClientAdded(self, objpath):
3397
2253
"D-Bus signal"
3398
2254
pass
3399
2255
3400
2256
@dbus.service.signal(_interface, signature="ss")
3401
def ClientNotFound(self, key_id, address):
2257
def ClientNotFound(self, fingerprint, address):
3402
2258
"D-Bus signal"
3403
2259
pass
3404
3405
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3406
"true"})
2260
3407
2261
@dbus.service.signal(_interface, signature="os")
3408
2262
def ClientRemoved(self, objpath, name):
3409
2263
"D-Bus signal"
3410
2264
pass
3411
3412
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3413
"true"})
2265
3414
2266
@dbus.service.method(_interface, out_signature="ao")
3415
2267
def GetAllClients(self):
3416
2268
"D-Bus method"
3417
return dbus.Array(c.dbus_object_path for c in
3418
tcp_server.clients.values())
3419
3420
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3421
"true"})
2269
return dbus.Array(c.dbus_object_path
2270
for c in
2271
tcp_server.clients.itervalues())
2272
3422
2273
@dbus.service.method(_interface,
3423
2274
out_signature="a{oa{sv}}")
3424
2275
def GetAllClientsWithProperties(self):
3425
2276
"D-Bus method"
3426
2277
return dbus.Dictionary(
3427
{c.dbus_object_path: c.GetAll(
3428
"se.recompile.Mandos.Client")
3429
for c in tcp_server.clients.values()},
2278
((c.dbus_object_path, c.GetAll(""))
2279
for c in tcp_server.clients.itervalues()),
3430
2280
signature="oa{sv}")
3431
2281
3432
2282
@dbus.service.method(_interface, in_signature="o")
3433
2283
def RemoveClient(self, object_path):
3434
2284
"D-Bus method"
3435
for c in tcp_server.clients.values():
2285
for c in tcp_server.clients.itervalues():
3436
2286
if c.dbus_object_path == object_path:
3437
2287
del tcp_server.clients[c.name]
3438
2288
c.remove_from_connection()
3439
# Don't signal the disabling
2289
# Don't signal anything except ClientRemoved
3440
2290
c.disable(quiet=True)
3441
# Emit D-Bus signal for removal
3442
self.client_removed_signal(c)
2291
# Emit D-Bus signal
2292
self.ClientRemoved(object_path, c.name)
3443
2293
return
3444
2294
raise KeyError(object_path)
3445
2295
3446
2296
del _interface
3447
3448
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3449
out_signature="a{oa{sa{sv}}}")
3450
def GetManagedObjects(self):
3451
"""D-Bus method"""
3452
return dbus.Dictionary(
3453
{client.dbus_object_path:
3454
dbus.Dictionary(
3455
{interface: client.GetAll(interface)
3456
for interface in
3457
client._get_all_interface_names()})
3458
for client in tcp_server.clients.values()})
3459
3460
def client_added_signal(self, client):
3461
"""Send the new standard signal and the old signal"""
3462
if use_dbus:
3463
# New standard signal
3464
self.InterfacesAdded(
3465
client.dbus_object_path,
3466
dbus.Dictionary(
3467
{interface: client.GetAll(interface)
3468
for interface in
3469
client._get_all_interface_names()}))
3470
# Old signal
3471
self.ClientAdded(client.dbus_object_path)
3472
3473
def client_removed_signal(self, client):
3474
"""Send the new standard signal and the old signal"""
3475
if use_dbus:
3476
# New standard signal
3477
self.InterfacesRemoved(
3478
client.dbus_object_path,
3479
client._get_all_interface_names())
3480
# Old signal
3481
self.ClientRemoved(client.dbus_object_path,
3482
client.name)
3483
3484
mandos_dbus_service = MandosDBusService()
3485
3486
# Save modules to variables to exempt the modules from being
3487
# unloaded before the function registered with atexit() is run.
3488
mp = multiprocessing
3489
wn = wnull
3490
2297
2298
class MandosDBusServiceTransitional(MandosDBusService):
2299
__metaclass__ = AlternateDBusNamesMetaclass
2300
mandos_dbus_service = MandosDBusServiceTransitional()
2301
3491
2302
def cleanup():
3492
2303
"Cleanup function; run on exit"
3493
if zeroconf:
3494
service.cleanup()
3495
3496
mp.active_children()
3497
wn.close()
2304
service.cleanup()
2305
2306
multiprocessing.active_children()
3498
2307
if not (tcp_server.clients or client_settings):
3499
2308
return
3500
2309
3501
# Store client before exiting. Secrets are encrypted with key
3502
# based on what config file has. If config file is
3503
# removed/edited, old secret will thus be unrecovable.
3504
clients = {}
3505
with PGPEngine() as pgp:
3506
for client in tcp_server.clients.values():
3507
key = client_settings[client.name]["secret"]
3508
client.encrypted_secret = pgp.encrypt(client.secret,
3509
key)
3510
client_dict = {}
3511
3512
# A list of attributes that can not be pickled
3513
# + secret.
3514
exclude = {"bus", "changedstate", "secret",
3515
"checker", "server_settings"}
3516
for name, typ in inspect.getmembers(dbus.service
3517
.Object):
3518
exclude.add(name)
3519
3520
client_dict["encrypted_secret"] = (client
3521
.encrypted_secret)
3522
for attr in client.client_structure:
3523
if attr not in exclude:
3524
client_dict[attr] = getattr(client, attr)
3525
3526
clients[client.name] = client_dict
3527
del client_settings[client.name]["secret"]
3528
2310
# Store client before exiting. Secrets are encrypted with key based
2311
# on what config file has. If config file is removed/edited, old
2312
# secret will thus be unrecovable.
2313
clients = []
2314
for client in tcp_server.clients.itervalues():
2315
client.encrypt_secret(client_settings[client.name]["secret"])
2316
2317
client_dict = {}
2318
2319
# A list of attributes that will not be stored when shuting down.
2320
exclude = set(("bus", "changedstate", "secret"))
2321
for name, typ in inspect.getmembers(dbus.service.Object):
2322
exclude.add(name)
2323
2324
client_dict["encrypted_secret"] = client.encrypted_secret
2325
for attr in client.client_structure:
2326
if attr not in exclude:
2327
client_dict[attr] = getattr(client, attr)
2328
2329
clients.append(client_dict)
2330
del client_settings[client.name]["secret"]
2331
3529
2332
try:
3530
with tempfile.NamedTemporaryFile(
3531
mode='wb',
3532
suffix=".pickle",
3533
prefix='clients-',
3534
dir=os.path.dirname(stored_state_path),
3535
delete=False) as stored_state:
3536
pickle.dump((clients, client_settings), stored_state,
3537
protocol=2)
3538
tempname = stored_state.name
3539
os.rename(tempname, stored_state_path)
3540
except (IOError, OSError) as e:
3541
if not debug:
3542
try:
3543
os.remove(tempname)
3544
except NameError:
3545
pass
3546
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3547
logger.warning("Could not save persistent state: {}"
3548
.format(os.strerror(e.errno)))
3549
else:
3550
logger.warning("Could not save persistent state:",
3551
exc_info=e)
2333
with os.fdopen(os.open(stored_state_path, os.O_CREAT|os.O_WRONLY|os.O_TRUNC, 0600), "wb") as stored_state:
2334
pickle.dump((clients, client_settings), stored_state)
2335
except IOError as e:
2336
logger.warning("Could not save persistant state: {0}".format(e))
2337
if e.errno != errno.ENOENT:
3552
2338
raise
3553
2339
3554
2340
# Delete all clients, and settings from config
3556
2342
name, client = tcp_server.clients.popitem()
3557
2343
if use_dbus:
3558
2344
client.remove_from_connection()
3559
# Don't signal the disabling
2345
# Don't signal anything except ClientRemoved
3560
2346
client.disable(quiet=True)
3561
# Emit D-Bus signal for removal
3562
2347
if use_dbus:
3563
mandos_dbus_service.client_removed_signal(client)
2348
# Emit D-Bus signal
2349
mandos_dbus_service.ClientRemoved(client
2350
.dbus_object_path,
2351
client.name)
3564
2352
client_settings.clear()
3565
2353
3566
2354
atexit.register(cleanup)
3567
3568
for client in tcp_server.clients.values():
2355
2356
for client in tcp_server.clients.itervalues():
3569
2357
if use_dbus:
3570
# Emit D-Bus signal for adding
3571
mandos_dbus_service.client_added_signal(client)
2358
# Emit D-Bus signal
2359
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3572
2360
# Need to initiate checking of clients
3573
2361
if client.enabled:
3574
2362
client.init_checker()
3575
2363
2364
3576
2365
tcp_server.enable()
3577
2366
tcp_server.server_activate()
3578
2367
3579
2368
# Find out what port we got
3580
if zeroconf:
3581
service.port = tcp_server.socket.getsockname()[1]
2369
service.port = tcp_server.socket.getsockname()[1]
3582
2370
if use_ipv6:
3583
2371
logger.info("Now listening on address %r, port %d,"
3584
" flowinfo %d, scope_id %d",
3585
*tcp_server.socket.getsockname())
2372
" flowinfo %d, scope_id %d"
2373
% tcp_server.socket.getsockname())
3586
2374
else: # IPv4
3587
logger.info("Now listening on address %r, port %d",
3588
*tcp_server.socket.getsockname())
3589
3590
# service.interface = tcp_server.socket.getsockname()[3]
3591
2375
logger.info("Now listening on address %r, port %d"
2376
% tcp_server.socket.getsockname())
2377
2378
#service.interface = tcp_server.socket.getsockname()[3]
2379
3592
2380
try:
3593
if zeroconf:
3594
# From the Avahi example code
3595
try:
3596
service.activate()
3597
except dbus.exceptions.DBusException as error:
3598
logger.critical("D-Bus Exception", exc_info=error)
3599
cleanup()
3600
sys.exit(1)
3601
# End of Avahi example code
3602
3603
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3604
lambda *args, **kwargs:
3605
(tcp_server.handle_request
3606
(*args[2:], **kwargs) or True))
3607
2381
# From the Avahi example code
2382
try:
2383
service.activate()
2384
except dbus.exceptions.DBusException as error:
2385
logger.critical("DBusException: %s", error)
2386
cleanup()
2387
sys.exit(1)
2388
# End of Avahi example code
2389
2390
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2391
lambda *args, **kwargs:
2392
(tcp_server.handle_request
2393
(*args[2:], **kwargs) or True))
2394
3608
2395
logger.debug("Starting main loop")
3609
2396
main_loop.run()
3610
2397
except AvahiError as error:
3611
logger.critical("Avahi Error", exc_info=error)
2398
logger.critical("AvahiError: %s", error)
3612
2399
cleanup()
3613
2400
sys.exit(1)
3614
2401
except KeyboardInterrupt:
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0