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- Committer: Björn Påhlsson
- Date: 2011-11-09 11:16:17 UTC
- mto: (237.14.5 persistent-state-gpgme)
- mto: This revision was merged to the branch mainline in revision 290.
- Revision ID: belorn@fukt.bsnet.se-20111109111617-jpey2sy4dupqzabc
Persistent state: New feature. Client state is now stored when mandos
server exits, and restored when starting up. Secrets
are encrypted with key based on clients config file.
--no-restore: New argument to mandos server. Disables restore
functionallity
minor changes: clients are now dicts!
server exits, and restored when starting up. Secrets
are encrypted with key based on clients config file.
--no-restore: New argument to mandos server. Disables restore
functionallity
minor changes: clients are now dicts!
- files added:
- initramfs-tools-hook-conf
- files removed:
- bugs.xml
- debian/upstream
- 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
from gi.repository import GLib
70
import gobject
71
import avahi
84
72
from dbus.mainloop.glib import DBusGMainLoop
85
73
import ctypes
86
74
import ctypes.util
87
75
import xml.dom.minidom
88
76
import inspect
77
import Crypto.Cipher.AES
89
78
90
# Try to find the value of SO_BINDTODEVICE:
91
79
try:
92
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
93
# newer, and it is also the most natural place for it:
94
80
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
95
81
except AttributeError:
96
82
try:
97
# This is where SO_BINDTODEVICE was up to and including Python
98
# 2.6, and also 3.2:
99
83
from IN import SO_BINDTODEVICE
100
84
except ImportError:
101
# In Python 2.7 it seems to have been removed entirely.
102
# Try running the C preprocessor:
103
try:
104
cc = subprocess.Popen(["cc", "--language=c", "-E",
105
"/dev/stdin"],
106
stdin=subprocess.PIPE,
107
stdout=subprocess.PIPE)
108
stdout = cc.communicate(
109
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
110
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
111
except (OSError, ValueError, IndexError):
112
# No value found
113
SO_BINDTODEVICE = None
114
115
if sys.version_info.major == 2:
116
str = unicode
117
118
version = "1.8.3"
119
stored_state_file = "clients.pickle"
120
121
logger = logging.getLogger()
122
syslogger = None
123
124
try:
125
if_nametoindex = ctypes.cdll.LoadLibrary(
126
ctypes.util.find_library("c")).if_nametoindex
127
except (OSError, AttributeError):
128
129
def if_nametoindex(interface):
130
"Get an interface index the hard way, i.e. using fcntl()"
131
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
132
with contextlib.closing(socket.socket()) as s:
133
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
134
struct.pack(b"16s16x", interface))
135
interface_index = struct.unpack("I", ifreq[16:20])[0]
136
return interface_index
137
138
139
def copy_function(func):
140
"""Make a copy of a function"""
141
if sys.version_info.major == 2:
142
return types.FunctionType(func.func_code,
143
func.func_globals,
144
func.func_name,
145
func.func_defaults,
146
func.func_closure)
147
else:
148
return types.FunctionType(func.__code__,
149
func.__globals__,
150
func.__name__,
151
func.__defaults__,
152
func.__closure__)
153
154
155
def initlogger(debug, level=logging.WARNING):
156
"""init logger and add loglevel"""
157
158
global syslogger
159
syslogger = (logging.handlers.SysLogHandler(
160
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
161
address="/dev/log"))
162
syslogger.setFormatter(logging.Formatter
163
('Mandos [%(process)d]: %(levelname)s:'
164
' %(message)s'))
165
logger.addHandler(syslogger)
166
167
if debug:
168
console = logging.StreamHandler()
169
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
170
' [%(process)d]:'
171
' %(levelname)s:'
172
' %(message)s'))
173
logger.addHandler(console)
174
logger.setLevel(level)
175
176
177
class PGPError(Exception):
178
"""Exception if encryption/decryption fails"""
179
pass
180
181
182
class PGPEngine(object):
183
"""A simple class for OpenPGP symmetric encryption & decryption"""
184
185
def __init__(self):
186
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
187
self.gpg = "gpg"
188
try:
189
output = subprocess.check_output(["gpgconf"])
190
for line in output.splitlines():
191
name, text, path = line.split(b":")
192
if name == "gpg":
193
self.gpg = path
194
break
195
except OSError as e:
196
if e.errno != errno.ENOENT:
197
raise
198
self.gnupgargs = ['--batch',
199
'--homedir', self.tempdir,
200
'--force-mdc',
201
'--quiet']
202
# Only GPG version 1 has the --no-use-agent option.
203
if self.gpg == "gpg" or self.gpg.endswith("/gpg"):
204
self.gnupgargs.append("--no-use-agent")
205
206
def __enter__(self):
207
return self
208
209
def __exit__(self, exc_type, exc_value, traceback):
210
self._cleanup()
211
return False
212
213
def __del__(self):
214
self._cleanup()
215
216
def _cleanup(self):
217
if self.tempdir is not None:
218
# Delete contents of tempdir
219
for root, dirs, files in os.walk(self.tempdir,
220
topdown=False):
221
for filename in files:
222
os.remove(os.path.join(root, filename))
223
for dirname in dirs:
224
os.rmdir(os.path.join(root, dirname))
225
# Remove tempdir
226
os.rmdir(self.tempdir)
227
self.tempdir = None
228
229
def password_encode(self, password):
230
# Passphrase can not be empty and can not contain newlines or
231
# NUL bytes. So we prefix it and hex encode it.
232
encoded = b"mandos" + binascii.hexlify(password)
233
if len(encoded) > 2048:
234
# GnuPG can't handle long passwords, so encode differently
235
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
236
.replace(b"\n", b"\\n")
237
.replace(b"\0", b"\\x00"))
238
return encoded
239
240
def encrypt(self, data, password):
241
passphrase = self.password_encode(password)
242
with tempfile.NamedTemporaryFile(
243
dir=self.tempdir) as passfile:
244
passfile.write(passphrase)
245
passfile.flush()
246
proc = subprocess.Popen([self.gpg, '--symmetric',
247
'--passphrase-file',
248
passfile.name]
249
+ self.gnupgargs,
250
stdin=subprocess.PIPE,
251
stdout=subprocess.PIPE,
252
stderr=subprocess.PIPE)
253
ciphertext, err = proc.communicate(input=data)
254
if proc.returncode != 0:
255
raise PGPError(err)
256
return ciphertext
257
258
def decrypt(self, data, password):
259
passphrase = self.password_encode(password)
260
with tempfile.NamedTemporaryFile(
261
dir=self.tempdir) as passfile:
262
passfile.write(passphrase)
263
passfile.flush()
264
proc = subprocess.Popen([self.gpg, '--decrypt',
265
'--passphrase-file',
266
passfile.name]
267
+ self.gnupgargs,
268
stdin=subprocess.PIPE,
269
stdout=subprocess.PIPE,
270
stderr=subprocess.PIPE)
271
decrypted_plaintext, err = proc.communicate(input=data)
272
if proc.returncode != 0:
273
raise PGPError(err)
274
return decrypted_plaintext
275
276
277
# Pretend that we have an Avahi module
278
class Avahi(object):
279
"""This isn't so much a class as it is a module-like namespace.
280
It is instantiated once, and simulates having an Avahi module."""
281
IF_UNSPEC = -1 # avahi-common/address.h
282
PROTO_UNSPEC = -1 # avahi-common/address.h
283
PROTO_INET = 0 # avahi-common/address.h
284
PROTO_INET6 = 1 # avahi-common/address.h
285
DBUS_NAME = "org.freedesktop.Avahi"
286
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
287
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
288
DBUS_PATH_SERVER = "/"
289
290
def string_array_to_txt_array(self, t):
291
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
292
for s in t), signature="ay")
293
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
294
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
295
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
296
SERVER_INVALID = 0 # avahi-common/defs.h
297
SERVER_REGISTERING = 1 # avahi-common/defs.h
298
SERVER_RUNNING = 2 # avahi-common/defs.h
299
SERVER_COLLISION = 3 # avahi-common/defs.h
300
SERVER_FAILURE = 4 # avahi-common/defs.h
301
avahi = Avahi()
302
85
SO_BINDTODEVICE = None
86
87
88
version = "1.4.1"
89
90
stored_state_path = "/var/lib/mandos/clients.pickle"
91
92
#logger = logging.getLogger('mandos')
93
logger = logging.Logger('mandos')
94
syslogger = (logging.handlers.SysLogHandler
95
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
96
address = str("/dev/log")))
97
syslogger.setFormatter(logging.Formatter
98
('Mandos [%(process)d]: %(levelname)s:'
99
' %(message)s'))
100
logger.addHandler(syslogger)
101
102
console = logging.StreamHandler()
103
console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'
104
' %(levelname)s:'
105
' %(message)s'))
106
logger.addHandler(console)
303
107
304
108
class AvahiError(Exception):
305
109
def __init__(self, value, *args, **kwargs):
306
110
self.value = value
307
return super(AvahiError, self).__init__(value, *args,
308
**kwargs)
309
111
super(AvahiError, self).__init__(value, *args, **kwargs)
112
def __unicode__(self):
113
return unicode(repr(self.value))
310
114
311
115
class AvahiServiceError(AvahiError):
312
116
pass
313
117
314
315
118
class AvahiGroupError(AvahiError):
316
119
pass
317
120
318
121
319
122
class AvahiService(object):
320
123
"""An Avahi (Zeroconf) service.
321
124
322
125
Attributes:
323
126
interface: integer; avahi.IF_UNSPEC or an interface index.
324
127
Used to optionally bind to the specified interface.
325
128
name: string; Example: 'Mandos'
326
129
type: string; Example: '_mandos._tcp'.
327
See <https://www.iana.org/assignments/service-names-port-numbers>
130
See <http://www.dns-sd.org/ServiceTypes.html>
328
131
port: integer; what port to announce
329
132
TXT: list of strings; TXT record for the service
330
133
domain: string; Domain to publish on, default to .local if empty.
336
139
server: D-Bus Server
337
140
bus: dbus.SystemBus()
338
141
"""
339
340
def __init__(self,
341
interface=avahi.IF_UNSPEC,
342
name=None,
343
servicetype=None,
344
port=None,
345
TXT=None,
346
domain="",
347
host="",
348
max_renames=32768,
349
protocol=avahi.PROTO_UNSPEC,
350
bus=None):
142
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
143
servicetype = None, port = None, TXT = None,
144
domain = "", host = "", max_renames = 32768,
145
protocol = avahi.PROTO_UNSPEC, bus = None):
351
146
self.interface = interface
352
147
self.name = name
353
148
self.type = servicetype
362
157
self.server = None
363
158
self.bus = bus
364
159
self.entry_group_state_changed_match = None
365
366
def rename(self, remove=True):
160
def rename(self):
367
161
"""Derived from the Avahi example code"""
368
162
if self.rename_count >= self.max_renames:
369
163
logger.critical("No suitable Zeroconf service name found"
370
164
" after %i retries, exiting.",
371
165
self.rename_count)
372
166
raise AvahiServiceError("Too many renames")
373
self.name = str(
374
self.server.GetAlternativeServiceName(self.name))
375
self.rename_count += 1
167
self.name = unicode(self.server
168
.GetAlternativeServiceName(self.name))
376
169
logger.info("Changing Zeroconf service name to %r ...",
377
170
self.name)
378
if remove:
379
self.remove()
171
syslogger.setFormatter(logging.Formatter
172
('Mandos (%s) [%%(process)d]:'
173
' %%(levelname)s: %%(message)s'
174
% self.name))
175
self.remove()
380
176
try:
381
177
self.add()
382
178
except dbus.exceptions.DBusException as error:
383
if (error.get_dbus_name()
384
== "org.freedesktop.Avahi.CollisionError"):
385
logger.info("Local Zeroconf service name collision.")
386
return self.rename(remove=False)
387
else:
388
logger.critical("D-Bus Exception", exc_info=error)
389
self.cleanup()
390
os._exit(1)
391
179
logger.critical("DBusException: %s", error)
180
self.cleanup()
181
os._exit(1)
182
self.rename_count += 1
392
183
def remove(self):
393
184
"""Derived from the Avahi example code"""
394
185
if self.entry_group_state_changed_match is not None:
396
187
self.entry_group_state_changed_match = None
397
188
if self.group is not None:
398
189
self.group.Reset()
399
400
190
def add(self):
401
191
"""Derived from the Avahi example code"""
402
192
self.remove()
407
197
avahi.DBUS_INTERFACE_ENTRY_GROUP)
408
198
self.entry_group_state_changed_match = (
409
199
self.group.connect_to_signal(
410
'StateChanged', self.entry_group_state_changed))
200
'StateChanged', self .entry_group_state_changed))
411
201
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
412
202
self.name, self.type)
413
203
self.group.AddService(
419
209
dbus.UInt16(self.port),
420
210
avahi.string_array_to_txt_array(self.TXT))
421
211
self.group.Commit()
422
423
212
def entry_group_state_changed(self, state, error):
424
213
"""Derived from the Avahi example code"""
425
214
logger.debug("Avahi entry group state change: %i", state)
426
215
427
216
if state == avahi.ENTRY_GROUP_ESTABLISHED:
428
217
logger.debug("Zeroconf service established.")
429
218
elif state == avahi.ENTRY_GROUP_COLLISION:
431
220
self.rename()
432
221
elif state == avahi.ENTRY_GROUP_FAILURE:
433
222
logger.critical("Avahi: Error in group state changed %s",
434
str(error))
435
raise AvahiGroupError("State changed: {!s}".format(error))
436
223
unicode(error))
224
raise AvahiGroupError("State changed: %s"
225
% unicode(error))
437
226
def cleanup(self):
438
227
"""Derived from the Avahi example code"""
439
228
if self.group is not None:
440
229
try:
441
230
self.group.Free()
442
231
except (dbus.exceptions.UnknownMethodException,
443
dbus.exceptions.DBusException):
232
dbus.exceptions.DBusException) as e:
444
233
pass
445
234
self.group = None
446
235
self.remove()
447
448
236
def server_state_changed(self, state, error=None):
449
237
"""Derived from the Avahi example code"""
450
238
logger.debug("Avahi server state change: %i", state)
451
bad_states = {
452
avahi.SERVER_INVALID: "Zeroconf server invalid",
453
avahi.SERVER_REGISTERING: None,
454
avahi.SERVER_COLLISION: "Zeroconf server name collision",
455
avahi.SERVER_FAILURE: "Zeroconf server failure",
456
}
239
bad_states = { avahi.SERVER_INVALID:
240
"Zeroconf server invalid",
241
avahi.SERVER_REGISTERING: None,
242
avahi.SERVER_COLLISION:
243
"Zeroconf server name collision",
244
avahi.SERVER_FAILURE:
245
"Zeroconf server failure" }
457
246
if state in bad_states:
458
247
if bad_states[state] is not None:
459
248
if error is None:
462
251
logger.error(bad_states[state] + ": %r", error)
463
252
self.cleanup()
464
253
elif state == avahi.SERVER_RUNNING:
465
try:
466
self.add()
467
except dbus.exceptions.DBusException as error:
468
if (error.get_dbus_name()
469
== "org.freedesktop.Avahi.CollisionError"):
470
logger.info("Local Zeroconf service name"
471
" collision.")
472
return self.rename(remove=False)
473
else:
474
logger.critical("D-Bus Exception", exc_info=error)
475
self.cleanup()
476
os._exit(1)
254
self.add()
477
255
else:
478
256
if error is None:
479
257
logger.debug("Unknown state: %r", state)
480
258
else:
481
259
logger.debug("Unknown state: %r: %r", state, error)
482
483
260
def activate(self):
484
261
"""Derived from the Avahi example code"""
485
262
if self.server is None:
489
266
follow_name_owner_changes=True),
490
267
avahi.DBUS_INTERFACE_SERVER)
491
268
self.server.connect_to_signal("StateChanged",
492
self.server_state_changed)
269
self.server_state_changed)
493
270
self.server_state_changed(self.server.GetState())
494
271
495
272
496
class AvahiServiceToSyslog(AvahiService):
497
def rename(self, *args, **kwargs):
498
"""Add the new name to the syslog messages"""
499
ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
500
syslogger.setFormatter(logging.Formatter(
501
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
502
.format(self.name)))
503
return ret
504
505
506
# Pretend that we have a GnuTLS module
507
class GnuTLS(object):
508
"""This isn't so much a class as it is a module-like namespace.
509
It is instantiated once, and simulates having a GnuTLS module."""
510
511
library = ctypes.util.find_library("gnutls")
512
if library is None:
513
library = ctypes.util.find_library("gnutls-deb0")
514
_library = ctypes.cdll.LoadLibrary(library)
515
del library
516
_need_version = b"3.3.0"
517
_tls_rawpk_version = b"3.6.6"
518
519
def __init__(self):
520
# Need to use "self" here, since this method is called before
521
# the assignment to the "gnutls" global variable happens.
522
if self.check_version(self._need_version) is None:
523
raise self.Error("Needs GnuTLS {} or later"
524
.format(self._need_version))
525
526
# Unless otherwise indicated, the constants and types below are
527
# all from the gnutls/gnutls.h C header file.
528
529
# Constants
530
E_SUCCESS = 0
531
E_INTERRUPTED = -52
532
E_AGAIN = -28
533
CRT_OPENPGP = 2
534
CRT_RAWPK = 3
535
CLIENT = 2
536
SHUT_RDWR = 0
537
CRD_CERTIFICATE = 1
538
E_NO_CERTIFICATE_FOUND = -49
539
X509_FMT_DER = 0
540
NO_TICKETS = 1<<10
541
ENABLE_RAWPK = 1<<18
542
CTYPE_PEERS = 3
543
KEYID_USE_SHA256 = 1 # gnutls/x509.h
544
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
545
546
# Types
547
class session_int(ctypes.Structure):
548
_fields_ = []
549
session_t = ctypes.POINTER(session_int)
550
551
class certificate_credentials_st(ctypes.Structure):
552
_fields_ = []
553
certificate_credentials_t = ctypes.POINTER(
554
certificate_credentials_st)
555
certificate_type_t = ctypes.c_int
556
557
class datum_t(ctypes.Structure):
558
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
559
('size', ctypes.c_uint)]
560
561
class openpgp_crt_int(ctypes.Structure):
562
_fields_ = []
563
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
564
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
565
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
566
credentials_type_t = ctypes.c_int
567
transport_ptr_t = ctypes.c_void_p
568
close_request_t = ctypes.c_int
569
570
# Exceptions
571
class Error(Exception):
572
# We need to use the class name "GnuTLS" here, since this
573
# exception might be raised from within GnuTLS.__init__,
574
# which is called before the assignment to the "gnutls"
575
# global variable has happened.
576
def __init__(self, message=None, code=None, args=()):
577
# Default usage is by a message string, but if a return
578
# code is passed, convert it to a string with
579
# gnutls.strerror()
580
self.code = code
581
if message is None and code is not None:
582
message = GnuTLS.strerror(code)
583
return super(GnuTLS.Error, self).__init__(
584
message, *args)
585
586
class CertificateSecurityError(Error):
587
pass
588
589
# Classes
590
class Credentials(object):
591
def __init__(self):
592
self._c_object = gnutls.certificate_credentials_t()
593
gnutls.certificate_allocate_credentials(
594
ctypes.byref(self._c_object))
595
self.type = gnutls.CRD_CERTIFICATE
596
597
def __del__(self):
598
gnutls.certificate_free_credentials(self._c_object)
599
600
class ClientSession(object):
601
def __init__(self, socket, credentials=None):
602
self._c_object = gnutls.session_t()
603
gnutls_flags = gnutls.CLIENT
604
if gnutls.check_version("3.5.6"):
605
gnutls_flags |= gnutls.NO_TICKETS
606
if gnutls.has_rawpk:
607
gnutls_flags |= gnutls.ENABLE_RAWPK
608
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
609
del gnutls_flags
610
gnutls.set_default_priority(self._c_object)
611
gnutls.transport_set_ptr(self._c_object, socket.fileno())
612
gnutls.handshake_set_private_extensions(self._c_object,
613
True)
614
self.socket = socket
615
if credentials is None:
616
credentials = gnutls.Credentials()
617
gnutls.credentials_set(self._c_object, credentials.type,
618
ctypes.cast(credentials._c_object,
619
ctypes.c_void_p))
620
self.credentials = credentials
621
622
def __del__(self):
623
gnutls.deinit(self._c_object)
624
625
def handshake(self):
626
return gnutls.handshake(self._c_object)
627
628
def send(self, data):
629
data = bytes(data)
630
data_len = len(data)
631
while data_len > 0:
632
data_len -= gnutls.record_send(self._c_object,
633
data[-data_len:],
634
data_len)
635
636
def bye(self):
637
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
638
639
# Error handling functions
640
def _error_code(result):
641
"""A function to raise exceptions on errors, suitable
642
for the 'restype' attribute on ctypes functions"""
643
if result >= 0:
644
return result
645
if result == gnutls.E_NO_CERTIFICATE_FOUND:
646
raise gnutls.CertificateSecurityError(code=result)
647
raise gnutls.Error(code=result)
648
649
def _retry_on_error(result, func, arguments):
650
"""A function to retry on some errors, suitable
651
for the 'errcheck' attribute on ctypes functions"""
652
while result < 0:
653
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
654
return _error_code(result)
655
result = func(*arguments)
656
return result
657
658
# Unless otherwise indicated, the function declarations below are
659
# all from the gnutls/gnutls.h C header file.
660
661
# Functions
662
priority_set_direct = _library.gnutls_priority_set_direct
663
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
664
ctypes.POINTER(ctypes.c_char_p)]
665
priority_set_direct.restype = _error_code
666
667
init = _library.gnutls_init
668
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
669
init.restype = _error_code
670
671
set_default_priority = _library.gnutls_set_default_priority
672
set_default_priority.argtypes = [session_t]
673
set_default_priority.restype = _error_code
674
675
record_send = _library.gnutls_record_send
676
record_send.argtypes = [session_t, ctypes.c_void_p,
677
ctypes.c_size_t]
678
record_send.restype = ctypes.c_ssize_t
679
record_send.errcheck = _retry_on_error
680
681
certificate_allocate_credentials = (
682
_library.gnutls_certificate_allocate_credentials)
683
certificate_allocate_credentials.argtypes = [
684
ctypes.POINTER(certificate_credentials_t)]
685
certificate_allocate_credentials.restype = _error_code
686
687
certificate_free_credentials = (
688
_library.gnutls_certificate_free_credentials)
689
certificate_free_credentials.argtypes = [
690
certificate_credentials_t]
691
certificate_free_credentials.restype = None
692
693
handshake_set_private_extensions = (
694
_library.gnutls_handshake_set_private_extensions)
695
handshake_set_private_extensions.argtypes = [session_t,
696
ctypes.c_int]
697
handshake_set_private_extensions.restype = None
698
699
credentials_set = _library.gnutls_credentials_set
700
credentials_set.argtypes = [session_t, credentials_type_t,
701
ctypes.c_void_p]
702
credentials_set.restype = _error_code
703
704
strerror = _library.gnutls_strerror
705
strerror.argtypes = [ctypes.c_int]
706
strerror.restype = ctypes.c_char_p
707
708
certificate_type_get = _library.gnutls_certificate_type_get
709
certificate_type_get.argtypes = [session_t]
710
certificate_type_get.restype = _error_code
711
712
certificate_get_peers = _library.gnutls_certificate_get_peers
713
certificate_get_peers.argtypes = [session_t,
714
ctypes.POINTER(ctypes.c_uint)]
715
certificate_get_peers.restype = ctypes.POINTER(datum_t)
716
717
global_set_log_level = _library.gnutls_global_set_log_level
718
global_set_log_level.argtypes = [ctypes.c_int]
719
global_set_log_level.restype = None
720
721
global_set_log_function = _library.gnutls_global_set_log_function
722
global_set_log_function.argtypes = [log_func]
723
global_set_log_function.restype = None
724
725
deinit = _library.gnutls_deinit
726
deinit.argtypes = [session_t]
727
deinit.restype = None
728
729
handshake = _library.gnutls_handshake
730
handshake.argtypes = [session_t]
731
handshake.restype = _error_code
732
handshake.errcheck = _retry_on_error
733
734
transport_set_ptr = _library.gnutls_transport_set_ptr
735
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
736
transport_set_ptr.restype = None
737
738
bye = _library.gnutls_bye
739
bye.argtypes = [session_t, close_request_t]
740
bye.restype = _error_code
741
bye.errcheck = _retry_on_error
742
743
check_version = _library.gnutls_check_version
744
check_version.argtypes = [ctypes.c_char_p]
745
check_version.restype = ctypes.c_char_p
746
747
has_rawpk = bool(check_version(_tls_rawpk_version))
748
749
if has_rawpk:
750
# Types
751
class pubkey_st(ctypes.Structure):
752
_fields = []
753
pubkey_t = ctypes.POINTER(pubkey_st)
754
755
x509_crt_fmt_t = ctypes.c_int
756
757
# All the function declarations below are from gnutls/abstract.h
758
pubkey_init = _library.gnutls_pubkey_init
759
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
760
pubkey_init.restype = _error_code
761
762
pubkey_import = _library.gnutls_pubkey_import
763
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
764
x509_crt_fmt_t]
765
pubkey_import.restype = _error_code
766
767
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
768
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
769
ctypes.POINTER(ctypes.c_ubyte),
770
ctypes.POINTER(ctypes.c_size_t)]
771
pubkey_get_key_id.restype = _error_code
772
773
pubkey_deinit = _library.gnutls_pubkey_deinit
774
pubkey_deinit.argtypes = [pubkey_t]
775
pubkey_deinit.restype = None
776
else:
777
# All the function declarations below are from gnutls/openpgp.h
778
779
openpgp_crt_init = _library.gnutls_openpgp_crt_init
780
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
781
openpgp_crt_init.restype = _error_code
782
783
openpgp_crt_import = _library.gnutls_openpgp_crt_import
784
openpgp_crt_import.argtypes = [openpgp_crt_t,
785
ctypes.POINTER(datum_t),
786
openpgp_crt_fmt_t]
787
openpgp_crt_import.restype = _error_code
788
789
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
790
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
791
ctypes.POINTER(ctypes.c_uint)]
792
openpgp_crt_verify_self.restype = _error_code
793
794
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
795
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
796
openpgp_crt_deinit.restype = None
797
798
openpgp_crt_get_fingerprint = (
799
_library.gnutls_openpgp_crt_get_fingerprint)
800
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
801
ctypes.c_void_p,
802
ctypes.POINTER(
803
ctypes.c_size_t)]
804
openpgp_crt_get_fingerprint.restype = _error_code
805
806
if check_version("3.6.4"):
807
certificate_type_get2 = _library.gnutls_certificate_type_get2
808
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
809
certificate_type_get2.restype = _error_code
810
811
# Remove non-public functions
812
del _error_code, _retry_on_error
813
# Create the global "gnutls" object, simulating a module
814
gnutls = GnuTLS()
815
816
817
def call_pipe(connection, # : multiprocessing.Connection
818
func, *args, **kwargs):
819
"""This function is meant to be called by multiprocessing.Process
820
821
This function runs func(*args, **kwargs), and writes the resulting
822
return value on the provided multiprocessing.Connection.
823
"""
824
connection.send(func(*args, **kwargs))
825
connection.close()
826
827
273
def _timedelta_to_milliseconds(td):
274
"Convert a datetime.timedelta() to milliseconds"
275
return ((td.days * 24 * 60 * 60 * 1000)
276
+ (td.seconds * 1000)
277
+ (td.microseconds // 1000))
278
828
279
class Client(object):
829
280
"""A representation of a client host served by this server.
830
281
831
282
Attributes:
832
approved: bool(); 'None' if not yet approved/disapproved
283
_approved: bool(); 'None' if not yet approved/disapproved
833
284
approval_delay: datetime.timedelta(); Time to wait for approval
834
285
approval_duration: datetime.timedelta(); Duration of one approval
835
286
checker: subprocess.Popen(); a running checker process used
836
287
to see if the client lives.
837
288
'None' if no process is running.
838
checker_callback_tag: a GLib event source tag, or None
289
checker_callback_tag: a gobject event source tag, or None
839
290
checker_command: string; External command which is run to check
840
291
if client lives. %() expansions are done at
841
292
runtime with vars(self) as dict, so that for
842
293
instance %(name)s can be used in the command.
843
checker_initiator_tag: a GLib event source tag, or None
294
checker_initiator_tag: a gobject event source tag, or None
844
295
created: datetime.datetime(); (UTC) object creation
845
296
client_structure: Object describing what attributes a client has
846
297
and is used for storing the client at exit
847
298
current_checker_command: string; current running checker_command
848
disable_initiator_tag: a GLib event source tag, or None
299
disable_initiator_tag: a gobject event source tag, or None
849
300
enabled: bool()
850
301
fingerprint: string (40 or 32 hexadecimal digits); used to
851
uniquely identify an OpenPGP client
852
key_id: string (64 hexadecimal digits); used to uniquely identify
853
a client using raw public keys
302
uniquely identify the client
854
303
host: string; available for use by the checker command
855
304
interval: datetime.timedelta(); How often to start a new checker
856
305
last_approval_request: datetime.datetime(); (UTC) or None
857
306
last_checked_ok: datetime.datetime(); (UTC) or None
858
last_checker_status: integer between 0 and 255 reflecting exit
859
status of last checker. -1 reflects crashed
860
checker, -2 means no checker completed yet.
861
last_checker_signal: The signal which killed the last checker, if
862
last_checker_status is -1
863
last_enabled: datetime.datetime(); (UTC) or None
307
Last_checker_status: integer between 0 and 255 reflecting exit status
308
of last checker. -1 reflect crashed checker.
309
last_enabled: datetime.datetime(); (UTC)
864
310
name: string; from the config file, used in log messages and
865
311
D-Bus identifiers
866
312
secret: bytestring; sent verbatim (over TLS) to client
867
313
timeout: datetime.timedelta(); How long from last_checked_ok
868
314
until this client is disabled
869
extended_timeout: extra long timeout when secret has been sent
315
extended_timeout: extra long timeout when password has been sent
870
316
runtime_expansions: Allowed attributes for runtime expansion.
871
317
expires: datetime.datetime(); time (UTC) when a client will be
872
318
disabled, or None
873
server_settings: The server_settings dict from main()
874
319
"""
875
320
876
321
runtime_expansions = ("approval_delay", "approval_duration",
877
"created", "enabled", "expires", "key_id",
878
"fingerprint", "host", "interval",
879
"last_approval_request", "last_checked_ok",
322
"created", "enabled", "fingerprint",
323
"host", "interval", "last_checked_ok",
880
324
"last_enabled", "name", "timeout")
881
client_defaults = {
882
"timeout": "PT5M",
883
"extended_timeout": "PT15M",
884
"interval": "PT2M",
885
"checker": "fping -q -- %%(host)s",
886
"host": "",
887
"approval_delay": "PT0S",
888
"approval_duration": "PT1S",
889
"approved_by_default": "True",
890
"enabled": "True",
891
}
892
893
@staticmethod
894
def config_parser(config):
895
"""Construct a new dict of client settings of this form:
896
{ client_name: {setting_name: value, ...}, ...}
897
with exceptions for any special settings as defined above.
898
NOTE: Must be a pure function. Must return the same result
899
value given the same arguments.
900
"""
901
settings = {}
902
for client_name in config.sections():
903
section = dict(config.items(client_name))
904
client = settings[client_name] = {}
905
906
client["host"] = section["host"]
907
# Reformat values from string types to Python types
908
client["approved_by_default"] = config.getboolean(
909
client_name, "approved_by_default")
910
client["enabled"] = config.getboolean(client_name,
911
"enabled")
912
913
# Uppercase and remove spaces from key_id and fingerprint
914
# for later comparison purposes with return value from the
915
# key_id() and fingerprint() functions
916
client["key_id"] = (section.get("key_id", "").upper()
917
.replace(" ", ""))
918
client["fingerprint"] = (section["fingerprint"].upper()
919
.replace(" ", ""))
920
if "secret" in section:
921
client["secret"] = codecs.decode(section["secret"]
922
.encode("utf-8"),
923
"base64")
924
elif "secfile" in section:
925
with open(os.path.expanduser(os.path.expandvars
926
(section["secfile"])),
927
"rb") as secfile:
928
client["secret"] = secfile.read()
929
else:
930
raise TypeError("No secret or secfile for section {}"
931
.format(section))
932
client["timeout"] = string_to_delta(section["timeout"])
933
client["extended_timeout"] = string_to_delta(
934
section["extended_timeout"])
935
client["interval"] = string_to_delta(section["interval"])
936
client["approval_delay"] = string_to_delta(
937
section["approval_delay"])
938
client["approval_duration"] = string_to_delta(
939
section["approval_duration"])
940
client["checker_command"] = section["checker"]
941
client["last_approval_request"] = None
942
client["last_checked_ok"] = None
943
client["last_checker_status"] = -2
944
945
return settings
946
947
def __init__(self, settings, name=None, server_settings=None):
325
326
def timeout_milliseconds(self):
327
"Return the 'timeout' attribute in milliseconds"
328
return _timedelta_to_milliseconds(self.timeout)
329
330
def extended_timeout_milliseconds(self):
331
"Return the 'extended_timeout' attribute in milliseconds"
332
return _timedelta_to_milliseconds(self.extended_timeout)
333
334
def interval_milliseconds(self):
335
"Return the 'interval' attribute in milliseconds"
336
return _timedelta_to_milliseconds(self.interval)
337
338
def approval_delay_milliseconds(self):
339
return _timedelta_to_milliseconds(self.approval_delay)
340
341
def __init__(self, name = None, config=None):
342
"""Note: the 'checker' key in 'config' sets the
343
'checker_command' attribute and *not* the 'checker'
344
attribute."""
948
345
self.name = name
949
if server_settings is None:
950
server_settings = {}
951
self.server_settings = server_settings
952
# adding all client settings
953
for setting, value in settings.items():
954
setattr(self, setting, value)
955
956
if self.enabled:
957
if not hasattr(self, "last_enabled"):
958
self.last_enabled = datetime.datetime.utcnow()
959
if not hasattr(self, "expires"):
960
self.expires = (datetime.datetime.utcnow()
961
+ self.timeout)
962
else:
963
self.last_enabled = None
964
self.expires = None
965
346
if config is None:
347
config = {}
966
348
logger.debug("Creating client %r", self.name)
967
logger.debug(" Key ID: %s", self.key_id)
349
# Uppercase and remove spaces from fingerprint for later
350
# comparison purposes with return value from the fingerprint()
351
# function
352
self.fingerprint = (config["fingerprint"].upper()
353
.replace(" ", ""))
968
354
logger.debug(" Fingerprint: %s", self.fingerprint)
969
self.created = settings.get("created",
970
datetime.datetime.utcnow())
971
972
# attributes specific for this server instance
355
if "secret" in config:
356
self.secret = config["secret"].decode("base64")
357
elif "secfile" in config:
358
with open(os.path.expanduser(os.path.expandvars
359
(config["secfile"])),
360
"rb") as secfile:
361
self.secret = secfile.read()
362
else:
363
raise TypeError("No secret or secfile for client %s"
364
% self.name)
365
self.host = config.get("host", "")
366
self.created = datetime.datetime.utcnow()
367
self.enabled = True
368
self.last_approval_request = None
369
self.last_enabled = datetime.datetime.utcnow()
370
self.last_checked_ok = None
371
self.last_checker_status = 0
372
self.timeout = string_to_delta(config["timeout"])
373
self.extended_timeout = string_to_delta(config
374
["extended_timeout"])
375
self.interval = string_to_delta(config["interval"])
973
376
self.checker = None
974
377
self.checker_initiator_tag = None
975
378
self.disable_initiator_tag = None
379
self.expires = datetime.datetime.utcnow() + self.timeout
976
380
self.checker_callback_tag = None
381
self.checker_command = config["checker"]
977
382
self.current_checker_command = None
978
self.approved = None
383
self._approved = None
384
self.approved_by_default = config.get("approved_by_default",
385
True)
979
386
self.approvals_pending = 0
980
self.changedstate = multiprocessing_manager.Condition(
981
multiprocessing_manager.Lock())
982
self.client_structure = [attr
983
for attr in self.__dict__.keys()
984
if not attr.startswith("_")]
387
self.approval_delay = string_to_delta(
388
config["approval_delay"])
389
self.approval_duration = string_to_delta(
390
config["approval_duration"])
391
self.changedstate = (multiprocessing_manager
392
.Condition(multiprocessing_manager
393
.Lock()))
394
self.client_structure = [attr for attr in self.__dict__.iterkeys() if not attr.startswith("_")]
985
395
self.client_structure.append("client_structure")
986
396
987
for name, t in inspect.getmembers(
988
type(self), lambda obj: isinstance(obj, property)):
397
398
for name, t in inspect.getmembers(type(self),
399
lambda obj: isinstance(obj, property)):
989
400
if not name.startswith("_"):
990
401
self.client_structure.append(name)
991
992
# Send notice to process children that client state has changed
402
403
993
404
def send_changedstate(self):
994
with self.changedstate:
995
self.changedstate.notify_all()
996
405
self.changedstate.acquire()
406
self.changedstate.notify_all()
407
self.changedstate.release()
408
997
409
def enable(self):
998
410
"""Start this client's checker and timeout hooks"""
999
411
if getattr(self, "enabled", False):
1000
412
# Already enabled
1001
413
return
414
self.send_changedstate()
1002
415
self.expires = datetime.datetime.utcnow() + self.timeout
1003
416
self.enabled = True
1004
417
self.last_enabled = datetime.datetime.utcnow()
1005
418
self.init_checker()
1006
self.send_changedstate()
1007
419
1008
420
def disable(self, quiet=True):
1009
421
"""Disable this client."""
1010
422
if not getattr(self, "enabled", False):
1011
423
return False
1012
424
if not quiet:
425
self.send_changedstate()
426
if not quiet:
1013
427
logger.info("Disabling client %s", self.name)
1014
if getattr(self, "disable_initiator_tag", None) is not None:
1015
GLib.source_remove(self.disable_initiator_tag)
428
if getattr(self, "disable_initiator_tag", False):
429
gobject.source_remove(self.disable_initiator_tag)
1016
430
self.disable_initiator_tag = None
1017
431
self.expires = None
1018
if getattr(self, "checker_initiator_tag", None) is not None:
1019
GLib.source_remove(self.checker_initiator_tag)
432
if getattr(self, "checker_initiator_tag", False):
433
gobject.source_remove(self.checker_initiator_tag)
1020
434
self.checker_initiator_tag = None
1021
435
self.stop_checker()
1022
436
self.enabled = False
1023
if not quiet:
1024
self.send_changedstate()
1025
# Do not run this again if called by a GLib.timeout_add
437
# Do not run this again if called by a gobject.timeout_add
1026
438
return False
1027
439
1028
440
def __del__(self):
1029
441
self.disable()
1030
442
1031
443
def init_checker(self):
1032
444
# Schedule a new checker to be started an 'interval' from now,
1033
445
# and every interval from then on.
1034
if self.checker_initiator_tag is not None:
1035
GLib.source_remove(self.checker_initiator_tag)
1036
self.checker_initiator_tag = GLib.timeout_add(
1037
int(self.interval.total_seconds() * 1000),
1038
self.start_checker)
446
self.checker_initiator_tag = (gobject.timeout_add
447
(self.interval_milliseconds(),
448
self.start_checker))
1039
449
# Schedule a disable() when 'timeout' has passed
1040
if self.disable_initiator_tag is not None:
1041
GLib.source_remove(self.disable_initiator_tag)
1042
self.disable_initiator_tag = GLib.timeout_add(
1043
int(self.timeout.total_seconds() * 1000), self.disable)
450
self.disable_initiator_tag = (gobject.timeout_add
451
(self.timeout_milliseconds(),
452
self.disable))
1044
453
# Also start a new checker *right now*.
1045
454
self.start_checker()
1046
455
1047
def checker_callback(self, source, condition, connection,
1048
command):
456
457
def checker_callback(self, pid, condition, command):
1049
458
"""The checker has completed, so take appropriate actions."""
1050
459
self.checker_callback_tag = None
1051
460
self.checker = None
1052
# Read return code from connection (see call_pipe)
1053
returncode = connection.recv()
1054
connection.close()
1055
1056
if returncode >= 0:
1057
self.last_checker_status = returncode
1058
self.last_checker_signal = None
461
if os.WIFEXITED(condition):
462
self.last_checker_status = os.WEXITSTATUS(condition)
1059
463
if self.last_checker_status == 0:
1060
464
logger.info("Checker for %(name)s succeeded",
1061
465
vars(self))
1062
466
self.checked_ok()
1063
467
else:
1064
logger.info("Checker for %(name)s failed", vars(self))
468
logger.info("Checker for %(name)s failed",
469
vars(self))
1065
470
else:
1066
471
self.last_checker_status = -1
1067
self.last_checker_signal = -returncode
1068
472
logger.warning("Checker for %(name)s crashed?",
1069
473
vars(self))
1070
return False
1071
1072
def checked_ok(self):
1073
"""Assert that the client has been seen, alive and well."""
1074
self.last_checked_ok = datetime.datetime.utcnow()
1075
self.last_checker_status = 0
1076
self.last_checker_signal = None
1077
self.bump_timeout()
1078
1079
def bump_timeout(self, timeout=None):
1080
"""Bump up the timeout for this client."""
474
475
def checked_ok(self, timeout=None):
476
"""Bump up the timeout for this client.
477
478
This should only be called when the client has been seen,
479
alive and well.
480
"""
1081
481
if timeout is None:
1082
482
timeout = self.timeout
483
self.last_checked_ok = datetime.datetime.utcnow()
1083
484
if self.disable_initiator_tag is not None:
1084
GLib.source_remove(self.disable_initiator_tag)
1085
self.disable_initiator_tag = None
485
gobject.source_remove(self.disable_initiator_tag)
1086
486
if getattr(self, "enabled", False):
1087
self.disable_initiator_tag = GLib.timeout_add(
1088
int(timeout.total_seconds() * 1000), self.disable)
487
self.disable_initiator_tag = (gobject.timeout_add
488
(_timedelta_to_milliseconds
489
(timeout), self.disable))
1089
490
self.expires = datetime.datetime.utcnow() + timeout
1090
491
1091
492
def need_approval(self):
1092
493
self.last_approval_request = datetime.datetime.utcnow()
1093
494
1094
495
def start_checker(self):
1095
496
"""Start a new checker subprocess if one is not running.
1096
497
1097
498
If a checker already exists, leave it running and do
1098
499
nothing."""
1099
500
# The reason for not killing a running checker is that if we
1100
# did that, and if a checker (for some reason) started running
1101
# slowly and taking more than 'interval' time, then the client
1102
# would inevitably timeout, since no checker would get a
1103
# chance to run to completion. If we instead leave running
501
# did that, then if a checker (for some reason) started
502
# running slowly and taking more than 'interval' time, the
503
# client would inevitably timeout, since no checker would get
504
# a chance to run to completion. If we instead leave running
1104
505
# checkers alone, the checker would have to take more time
1105
506
# than 'timeout' for the client to be disabled, which is as it
1106
507
# should be.
1107
1108
if self.checker is not None and not self.checker.is_alive():
1109
logger.warning("Checker was not alive; joining")
1110
self.checker.join()
1111
self.checker = None
508
509
# If a checker exists, make sure it is not a zombie
510
try:
511
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
512
except (AttributeError, OSError) as error:
513
if (isinstance(error, OSError)
514
and error.errno != errno.ECHILD):
515
raise error
516
else:
517
if pid:
518
logger.warning("Checker was a zombie")
519
gobject.source_remove(self.checker_callback_tag)
520
self.checker_callback(pid, status,
521
self.current_checker_command)
1112
522
# Start a new checker if needed
1113
523
if self.checker is None:
1114
# Escape attributes for the shell
1115
escaped_attrs = {
1116
attr: re.escape(str(getattr(self, attr)))
1117
for attr in self.runtime_expansions}
1118
524
try:
1119
command = self.checker_command % escaped_attrs
1120
except TypeError as error:
1121
logger.error('Could not format string "%s"',
1122
self.checker_command,
1123
exc_info=error)
1124
return True # Try again later
525
# In case checker_command has exactly one % operator
526
command = self.checker_command % self.host
527
except TypeError:
528
# Escape attributes for the shell
529
escaped_attrs = dict(
530
(attr,
531
re.escape(unicode(str(getattr(self, attr, "")),
532
errors=
533
'replace')))
534
for attr in
535
self.runtime_expansions)
536
537
try:
538
command = self.checker_command % escaped_attrs
539
except TypeError as error:
540
logger.error('Could not format string "%s":'
541
' %s', self.checker_command, error)
542
return True # Try again later
1125
543
self.current_checker_command = command
1126
logger.info("Starting checker %r for %s", command,
1127
self.name)
1128
# We don't need to redirect stdout and stderr, since
1129
# in normal mode, that is already done by daemon(),
1130
# and in debug mode we don't want to. (Stdin is
1131
# always replaced by /dev/null.)
1132
# The exception is when not debugging but nevertheless
1133
# running in the foreground; use the previously
1134
# created wnull.
1135
popen_args = {"close_fds": True,
1136
"shell": True,
1137
"cwd": "/"}
1138
if (not self.server_settings["debug"]
1139
and self.server_settings["foreground"]):
1140
popen_args.update({"stdout": wnull,
1141
"stderr": wnull})
1142
pipe = multiprocessing.Pipe(duplex=False)
1143
self.checker = multiprocessing.Process(
1144
target=call_pipe,
1145
args=(pipe[1], subprocess.call, command),
1146
kwargs=popen_args)
1147
self.checker.start()
1148
self.checker_callback_tag = GLib.io_add_watch(
1149
pipe[0].fileno(), GLib.IO_IN,
1150
self.checker_callback, pipe[0], command)
1151
# Re-run this periodically if run by GLib.timeout_add
544
try:
545
logger.info("Starting checker %r for %s",
546
command, self.name)
547
# We don't need to redirect stdout and stderr, since
548
# in normal mode, that is already done by daemon(),
549
# and in debug mode we don't want to. (Stdin is
550
# always replaced by /dev/null.)
551
self.checker = subprocess.Popen(command,
552
close_fds=True,
553
shell=True, cwd="/")
554
self.checker_callback_tag = (gobject.child_watch_add
555
(self.checker.pid,
556
self.checker_callback,
557
data=command))
558
# The checker may have completed before the gobject
559
# watch was added. Check for this.
560
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
561
if pid:
562
gobject.source_remove(self.checker_callback_tag)
563
self.checker_callback(pid, status, command)
564
except OSError as error:
565
logger.error("Failed to start subprocess: %s",
566
error)
567
# Re-run this periodically if run by gobject.timeout_add
1152
568
return True
1153
569
1154
570
def stop_checker(self):
1155
571
"""Force the checker process, if any, to stop."""
1156
572
if self.checker_callback_tag:
1157
GLib.source_remove(self.checker_callback_tag)
573
gobject.source_remove(self.checker_callback_tag)
1158
574
self.checker_callback_tag = None
1159
575
if getattr(self, "checker", None) is None:
1160
576
return
1161
577
logger.debug("Stopping checker for %(name)s", vars(self))
1162
self.checker.terminate()
578
try:
579
os.kill(self.checker.pid, signal.SIGTERM)
580
#time.sleep(0.5)
581
#if self.checker.poll() is None:
582
# os.kill(self.checker.pid, signal.SIGKILL)
583
except OSError as error:
584
if error.errno != errno.ESRCH: # No such process
585
raise
1163
586
self.checker = None
1164
587
1165
1166
def dbus_service_property(dbus_interface,
1167
signature="v",
1168
access="readwrite",
1169
byte_arrays=False):
588
# Encrypts a client secret and stores it in a varible encrypted_secret
589
def encrypt_secret(self, key):
590
# Encryption-key need to be specific size, so we hash inputed key
591
hasheng = hashlib.sha256()
592
hasheng.update(key)
593
encryptionkey = hasheng.digest()
594
595
# Create validation hash so we know at decryption if it was sucessful
596
hasheng = hashlib.sha256()
597
hasheng.update(self.secret)
598
validationhash = hasheng.digest()
599
600
# Encrypt secret
601
iv = os.urandom(Crypto.Cipher.AES.block_size)
602
ciphereng = Crypto.Cipher.AES.new(encryptionkey,
603
Crypto.Cipher.AES.MODE_CFB, iv)
604
ciphertext = ciphereng.encrypt(validationhash+self.secret)
605
self.encrypted_secret = (ciphertext, iv)
606
607
# Decrypt a encrypted client secret
608
def decrypt_secret(self, key):
609
# Decryption-key need to be specific size, so we hash inputed key
610
hasheng = hashlib.sha256()
611
hasheng.update(key)
612
encryptionkey = hasheng.digest()
613
614
# Decrypt encrypted secret
615
ciphertext, iv = self.encrypted_secret
616
ciphereng = Crypto.Cipher.AES.new(encryptionkey,
617
Crypto.Cipher.AES.MODE_CFB, iv)
618
plain = ciphereng.decrypt(ciphertext)
619
620
# Validate decrypted secret to know if it was succesful
621
hasheng = hashlib.sha256()
622
validationhash = plain[:hasheng.digest_size]
623
secret = plain[hasheng.digest_size:]
624
hasheng.update(secret)
625
626
# if validation fails, we use key as new secret. Otherwhise, we use
627
# the decrypted secret
628
if hasheng.digest() == validationhash:
629
self.secret = secret
630
else:
631
self.secret = key
632
del self.encrypted_secret
633
634
635
def dbus_service_property(dbus_interface, signature="v",
636
access="readwrite", byte_arrays=False):
1170
637
"""Decorators for marking methods of a DBusObjectWithProperties to
1171
638
become properties on the D-Bus.
1172
639
1173
640
The decorated method will be called with no arguments by "Get"
1174
641
and with one argument by "Set".
1175
642
1176
643
The parameters, where they are supported, are the same as
1177
644
dbus.service.method, except there is only "signature", since the
1178
645
type from Get() and the type sent to Set() is the same.
1181
648
# "Set" method, so we fail early here:
1182
649
if byte_arrays and signature != "ay":
1183
650
raise ValueError("Byte arrays not supported for non-'ay'"
1184
" signature {!r}".format(signature))
1185
651
" signature %r" % signature)
1186
652
def decorator(func):
1187
653
func._dbus_is_property = True
1188
654
func._dbus_interface = dbus_interface
1191
657
func._dbus_name = func.__name__
1192
658
if func._dbus_name.endswith("_dbus_property"):
1193
659
func._dbus_name = func._dbus_name[:-14]
1194
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
1195
return func
1196
1197
return decorator
1198
1199
1200
def dbus_interface_annotations(dbus_interface):
1201
"""Decorator for marking functions returning interface annotations
1202
1203
Usage:
1204
1205
@dbus_interface_annotations("org.example.Interface")
1206
def _foo(self): # Function name does not matter
1207
return {"org.freedesktop.DBus.Deprecated": "true",
1208
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1209
"false"}
1210
"""
1211
1212
def decorator(func):
1213
func._dbus_is_interface = True
1214
func._dbus_interface = dbus_interface
1215
func._dbus_name = dbus_interface
1216
return func
1217
1218
return decorator
1219
1220
1221
def dbus_annotations(annotations):
1222
"""Decorator to annotate D-Bus methods, signals or properties
1223
Usage:
1224
1225
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1226
"org.freedesktop.DBus.Property."
1227
"EmitsChangedSignal": "false"})
1228
@dbus_service_property("org.example.Interface", signature="b",
1229
access="r")
1230
def Property_dbus_property(self):
1231
return dbus.Boolean(False)
1232
1233
See also the DBusObjectWithAnnotations class.
1234
"""
1235
1236
def decorator(func):
1237
func._dbus_annotations = annotations
1238
return func
1239
660
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
661
return func
1240
662
return decorator
1241
663
1242
664
1243
665
class DBusPropertyException(dbus.exceptions.DBusException):
1244
666
"""A base class for D-Bus property-related exceptions
1245
667
"""
1246
pass
668
def __unicode__(self):
669
return unicode(str(self))
1247
670
1248
671
1249
672
class DBusPropertyAccessException(DBusPropertyException):
1258
681
pass
1259
682
1260
683
1261
class DBusObjectWithAnnotations(dbus.service.Object):
1262
"""A D-Bus object with annotations.
1263
1264
Classes inheriting from this can use the dbus_annotations
1265
decorator to add annotations to methods or signals.
1266
"""
1267
1268
@staticmethod
1269
def _is_dbus_thing(thing):
1270
"""Returns a function testing if an attribute is a D-Bus thing
1271
1272
If called like _is_dbus_thing("method") it returns a function
1273
suitable for use as predicate to inspect.getmembers().
1274
"""
1275
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1276
False)
1277
1278
def _get_all_dbus_things(self, thing):
1279
"""Returns a generator of (name, attribute) pairs
1280
"""
1281
return ((getattr(athing.__get__(self), "_dbus_name", name),
1282
athing.__get__(self))
1283
for cls in self.__class__.__mro__
1284
for name, athing in
1285
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1286
1287
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1288
out_signature="s",
1289
path_keyword='object_path',
1290
connection_keyword='connection')
1291
def Introspect(self, object_path, connection):
1292
"""Overloading of standard D-Bus method.
1293
1294
Inserts annotation tags on methods and signals.
1295
"""
1296
xmlstring = dbus.service.Object.Introspect(self, object_path,
1297
connection)
1298
try:
1299
document = xml.dom.minidom.parseString(xmlstring)
1300
1301
for if_tag in document.getElementsByTagName("interface"):
1302
# Add annotation tags
1303
for typ in ("method", "signal"):
1304
for tag in if_tag.getElementsByTagName(typ):
1305
annots = dict()
1306
for name, prop in (self.
1307
_get_all_dbus_things(typ)):
1308
if (name == tag.getAttribute("name")
1309
and prop._dbus_interface
1310
== if_tag.getAttribute("name")):
1311
annots.update(getattr(
1312
prop, "_dbus_annotations", {}))
1313
for name, value in annots.items():
1314
ann_tag = document.createElement(
1315
"annotation")
1316
ann_tag.setAttribute("name", name)
1317
ann_tag.setAttribute("value", value)
1318
tag.appendChild(ann_tag)
1319
# Add interface annotation tags
1320
for annotation, value in dict(
1321
itertools.chain.from_iterable(
1322
annotations().items()
1323
for name, annotations
1324
in self._get_all_dbus_things("interface")
1325
if name == if_tag.getAttribute("name")
1326
)).items():
1327
ann_tag = document.createElement("annotation")
1328
ann_tag.setAttribute("name", annotation)
1329
ann_tag.setAttribute("value", value)
1330
if_tag.appendChild(ann_tag)
1331
# Fix argument name for the Introspect method itself
1332
if (if_tag.getAttribute("name")
1333
== dbus.INTROSPECTABLE_IFACE):
1334
for cn in if_tag.getElementsByTagName("method"):
1335
if cn.getAttribute("name") == "Introspect":
1336
for arg in cn.getElementsByTagName("arg"):
1337
if (arg.getAttribute("direction")
1338
== "out"):
1339
arg.setAttribute("name",
1340
"xml_data")
1341
xmlstring = document.toxml("utf-8")
1342
document.unlink()
1343
except (AttributeError, xml.dom.DOMException,
1344
xml.parsers.expat.ExpatError) as error:
1345
logger.error("Failed to override Introspection method",
1346
exc_info=error)
1347
return xmlstring
1348
1349
1350
class DBusObjectWithProperties(DBusObjectWithAnnotations):
684
class DBusObjectWithProperties(dbus.service.Object):
1351
685
"""A D-Bus object with properties.
1352
686
1353
687
Classes inheriting from this can use the dbus_service_property
1354
688
decorator to expose methods as D-Bus properties. It exposes the
1355
689
standard Get(), Set(), and GetAll() methods on the D-Bus.
1356
690
"""
1357
691
692
@staticmethod
693
def _is_dbus_property(obj):
694
return getattr(obj, "_dbus_is_property", False)
695
696
def _get_all_dbus_properties(self):
697
"""Returns a generator of (name, attribute) pairs
698
"""
699
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
700
for cls in self.__class__.__mro__
701
for name, prop in
702
inspect.getmembers(cls, self._is_dbus_property))
703
1358
704
def _get_dbus_property(self, interface_name, property_name):
1359
705
"""Returns a bound method if one exists which is a D-Bus
1360
706
property with the specified name and interface.
1361
707
"""
1362
for cls in self.__class__.__mro__:
1363
for name, value in inspect.getmembers(
1364
cls, self._is_dbus_thing("property")):
708
for cls in self.__class__.__mro__:
709
for name, value in (inspect.getmembers
710
(cls, self._is_dbus_property)):
1365
711
if (value._dbus_name == property_name
1366
712
and value._dbus_interface == interface_name):
1367
713
return value.__get__(self)
1368
714
1369
715
# No such property
1370
raise DBusPropertyNotFound("{}:{}.{}".format(
1371
self.dbus_object_path, interface_name, property_name))
1372
1373
@classmethod
1374
def _get_all_interface_names(cls):
1375
"""Get a sequence of all interfaces supported by an object"""
1376
return (name for name in set(getattr(getattr(x, attr),
1377
"_dbus_interface", None)
1378
for x in (inspect.getmro(cls))
1379
for attr in dir(x))
1380
if name is not None)
1381
1382
@dbus.service.method(dbus.PROPERTIES_IFACE,
1383
in_signature="ss",
716
raise DBusPropertyNotFound(self.dbus_object_path + ":"
717
+ interface_name + "."
718
+ property_name)
719
720
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1384
721
out_signature="v")
1385
722
def Get(self, interface_name, property_name):
1386
723
"""Standard D-Bus property Get() method, see D-Bus standard.
1392
729
if not hasattr(value, "variant_level"):
1393
730
return value
1394
731
return type(value)(value, variant_level=value.variant_level+1)
1395
732
1396
733
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
1397
734
def Set(self, interface_name, property_name, value):
1398
735
"""Standard D-Bus property Set() method, see D-Bus standard.
1404
741
# The byte_arrays option is not supported yet on
1405
742
# signatures other than "ay".
1406
743
if prop._dbus_signature != "ay":
1407
raise ValueError("Byte arrays not supported for non-"
1408
"'ay' signature {!r}"
1409
.format(prop._dbus_signature))
1410
value = dbus.ByteArray(b''.join(chr(byte)
1411
for byte in value))
744
raise ValueError
745
value = dbus.ByteArray(''.join(unichr(byte)
746
for byte in value))
1412
747
prop(value)
1413
1414
@dbus.service.method(dbus.PROPERTIES_IFACE,
1415
in_signature="s",
748
749
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1416
750
out_signature="a{sv}")
1417
751
def GetAll(self, interface_name):
1418
752
"""Standard D-Bus property GetAll() method, see D-Bus
1419
753
standard.
1420
754
1421
755
Note: Will not include properties with access="write".
1422
756
"""
1423
properties = {}
1424
for name, prop in self._get_all_dbus_things("property"):
757
all = {}
758
for name, prop in self._get_all_dbus_properties():
1425
759
if (interface_name
1426
760
and interface_name != prop._dbus_interface):
1427
761
# Interface non-empty but did not match
1431
765
continue
1432
766
value = prop()
1433
767
if not hasattr(value, "variant_level"):
1434
properties[name] = value
768
all[name] = value
1435
769
continue
1436
properties[name] = type(value)(
1437
value, variant_level=value.variant_level + 1)
1438
return dbus.Dictionary(properties, signature="sv")
1439
1440
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1441
def PropertiesChanged(self, interface_name, changed_properties,
1442
invalidated_properties):
1443
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1444
standard.
1445
"""
1446
pass
1447
770
all[name] = type(value)(value, variant_level=
771
value.variant_level+1)
772
return dbus.Dictionary(all, signature="sv")
773
1448
774
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1449
775
out_signature="s",
1450
776
path_keyword='object_path',
1451
777
connection_keyword='connection')
1452
778
def Introspect(self, object_path, connection):
1453
"""Overloading of standard D-Bus method.
1454
1455
Inserts property tags and interface annotation tags.
779
"""Standard D-Bus method, overloaded to insert property tags.
1456
780
"""
1457
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1458
object_path,
1459
connection)
781
xmlstring = dbus.service.Object.Introspect(self, object_path,
782
connection)
1460
783
try:
1461
784
document = xml.dom.minidom.parseString(xmlstring)
1462
1463
785
def make_tag(document, name, prop):
1464
786
e = document.createElement("property")
1465
787
e.setAttribute("name", name)
1466
788
e.setAttribute("type", prop._dbus_signature)
1467
789
e.setAttribute("access", prop._dbus_access)
1468
790
return e
1469
1470
791
for if_tag in document.getElementsByTagName("interface"):
1471
# Add property tags
1472
792
for tag in (make_tag(document, name, prop)
1473
793
for name, prop
1474
in self._get_all_dbus_things("property")
794
in self._get_all_dbus_properties()
1475
795
if prop._dbus_interface
1476
796
== if_tag.getAttribute("name")):
1477
797
if_tag.appendChild(tag)
1478
# Add annotation tags for properties
1479
for tag in if_tag.getElementsByTagName("property"):
1480
annots = dict()
1481
for name, prop in self._get_all_dbus_things(
1482
"property"):
1483
if (name == tag.getAttribute("name")
1484
and prop._dbus_interface
1485
== if_tag.getAttribute("name")):
1486
annots.update(getattr(
1487
prop, "_dbus_annotations", {}))
1488
for name, value in annots.items():
1489
ann_tag = document.createElement(
1490
"annotation")
1491
ann_tag.setAttribute("name", name)
1492
ann_tag.setAttribute("value", value)
1493
tag.appendChild(ann_tag)
1494
798
# Add the names to the return values for the
1495
799
# "org.freedesktop.DBus.Properties" methods
1496
800
if (if_tag.getAttribute("name")
1511
815
except (AttributeError, xml.dom.DOMException,
1512
816
xml.parsers.expat.ExpatError) as error:
1513
817
logger.error("Failed to override Introspection method",
1514
exc_info=error)
1515
return xmlstring
1516
1517
1518
try:
1519
dbus.OBJECT_MANAGER_IFACE
1520
except AttributeError:
1521
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1522
1523
1524
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1525
"""A D-Bus object with an ObjectManager.
1526
1527
Classes inheriting from this exposes the standard
1528
GetManagedObjects call and the InterfacesAdded and
1529
InterfacesRemoved signals on the standard
1530
"org.freedesktop.DBus.ObjectManager" interface.
1531
1532
Note: No signals are sent automatically; they must be sent
1533
manually.
1534
"""
1535
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1536
out_signature="a{oa{sa{sv}}}")
1537
def GetManagedObjects(self):
1538
"""This function must be overridden"""
1539
raise NotImplementedError()
1540
1541
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1542
signature="oa{sa{sv}}")
1543
def InterfacesAdded(self, object_path, interfaces_and_properties):
1544
pass
1545
1546
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1547
def InterfacesRemoved(self, object_path, interfaces):
1548
pass
1549
1550
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1551
out_signature="s",
1552
path_keyword='object_path',
1553
connection_keyword='connection')
1554
def Introspect(self, object_path, connection):
1555
"""Overloading of standard D-Bus method.
1556
1557
Override return argument name of GetManagedObjects to be
1558
"objpath_interfaces_and_properties"
1559
"""
1560
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1561
object_path,
1562
connection)
1563
try:
1564
document = xml.dom.minidom.parseString(xmlstring)
1565
1566
for if_tag in document.getElementsByTagName("interface"):
1567
# Fix argument name for the GetManagedObjects method
1568
if (if_tag.getAttribute("name")
1569
== dbus.OBJECT_MANAGER_IFACE):
1570
for cn in if_tag.getElementsByTagName("method"):
1571
if (cn.getAttribute("name")
1572
== "GetManagedObjects"):
1573
for arg in cn.getElementsByTagName("arg"):
1574
if (arg.getAttribute("direction")
1575
== "out"):
1576
arg.setAttribute(
1577
"name",
1578
"objpath_interfaces"
1579
"_and_properties")
1580
xmlstring = document.toxml("utf-8")
1581
document.unlink()
1582
except (AttributeError, xml.dom.DOMException,
1583
xml.parsers.expat.ExpatError) as error:
1584
logger.error("Failed to override Introspection method",
1585
exc_info=error)
1586
return xmlstring
1587
1588
1589
def datetime_to_dbus(dt, variant_level=0):
818
error)
819
return xmlstring
820
821
822
def datetime_to_dbus (dt, variant_level=0):
1590
823
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1591
824
if dt is None:
1592
return dbus.String("", variant_level=variant_level)
1593
return dbus.String(dt.isoformat(), variant_level=variant_level)
1594
1595
1596
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1597
"""A class decorator; applied to a subclass of
1598
dbus.service.Object, it will add alternate D-Bus attributes with
1599
interface names according to the "alt_interface_names" mapping.
1600
Usage:
1601
1602
@alternate_dbus_interfaces({"org.example.Interface":
1603
"net.example.AlternateInterface"})
1604
class SampleDBusObject(dbus.service.Object):
1605
@dbus.service.method("org.example.Interface")
1606
def SampleDBusMethod():
1607
pass
1608
1609
The above "SampleDBusMethod" on "SampleDBusObject" will be
1610
reachable via two interfaces: "org.example.Interface" and
1611
"net.example.AlternateInterface", the latter of which will have
1612
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1613
"true", unless "deprecate" is passed with a False value.
1614
1615
This works for methods and signals, and also for D-Bus properties
1616
(from DBusObjectWithProperties) and interfaces (from the
1617
dbus_interface_annotations decorator).
825
return dbus.String("", variant_level = variant_level)
826
return dbus.String(dt.isoformat(),
827
variant_level=variant_level)
828
829
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
830
.__metaclass__):
831
"""Applied to an empty subclass of a D-Bus object, this metaclass
832
will add additional D-Bus attributes matching a certain pattern.
1618
833
"""
1619
1620
def wrapper(cls):
1621
for orig_interface_name, alt_interface_name in (
1622
alt_interface_names.items()):
1623
attr = {}
1624
interface_names = set()
1625
# Go though all attributes of the class
1626
for attrname, attribute in inspect.getmembers(cls):
834
def __new__(mcs, name, bases, attr):
835
# Go through all the base classes which could have D-Bus
836
# methods, signals, or properties in them
837
for base in (b for b in bases
838
if issubclass(b, dbus.service.Object)):
839
# Go though all attributes of the base class
840
for attrname, attribute in inspect.getmembers(base):
1627
841
# Ignore non-D-Bus attributes, and D-Bus attributes
1628
842
# with the wrong interface name
1629
843
if (not hasattr(attribute, "_dbus_interface")
1630
or not attribute._dbus_interface.startswith(
1631
orig_interface_name)):
844
or not attribute._dbus_interface
845
.startswith("se.recompile.Mandos")):
1632
846
continue
1633
847
# Create an alternate D-Bus interface name based on
1634
848
# the current name
1635
alt_interface = attribute._dbus_interface.replace(
1636
orig_interface_name, alt_interface_name)
1637
interface_names.add(alt_interface)
849
alt_interface = (attribute._dbus_interface
850
.replace("se.recompile.Mandos",
851
"se.bsnet.fukt.Mandos"))
1638
852
# Is this a D-Bus signal?
1639
853
if getattr(attribute, "_dbus_is_signal", False):
1640
# Extract the original non-method undecorated
1641
# function by black magic
1642
if sys.version_info.major == 2:
1643
nonmethod_func = (dict(
854
# Extract the original non-method function by
855
# black magic
856
nonmethod_func = (dict(
1644
857
zip(attribute.func_code.co_freevars,
1645
attribute.__closure__))
1646
["func"].cell_contents)
1647
else:
1648
nonmethod_func = (dict(
1649
zip(attribute.__code__.co_freevars,
1650
attribute.__closure__))
1651
["func"].cell_contents)
858
attribute.__closure__))["func"]
859
.cell_contents)
1652
860
# Create a new, but exactly alike, function
1653
861
# object, and decorate it to be a new D-Bus signal
1654
862
# with the alternate D-Bus interface name
1655
new_function = copy_function(nonmethod_func)
1656
new_function = (dbus.service.signal(
1657
alt_interface,
1658
attribute._dbus_signature)(new_function))
1659
# Copy annotations, if any
1660
try:
1661
new_function._dbus_annotations = dict(
1662
attribute._dbus_annotations)
1663
except AttributeError:
1664
pass
1665
863
new_function = (dbus.service.signal
864
(alt_interface,
865
attribute._dbus_signature)
866
(types.FunctionType(
867
nonmethod_func.func_code,
868
nonmethod_func.func_globals,
869
nonmethod_func.func_name,
870
nonmethod_func.func_defaults,
871
nonmethod_func.func_closure)))
1666
872
# Define a creator of a function to call both the
1667
# original and alternate functions, so both the
1668
# original and alternate signals gets sent when
1669
# the function is called
873
# old and new functions, so both the old and new
874
# signals gets sent when the function is called
1670
875
def fixscope(func1, func2):
1671
876
"""This function is a scope container to pass
1672
877
func1 and func2 to the "call_both" function
1673
878
outside of its arguments"""
1674
1675
@functools.wraps(func2)
1676
879
def call_both(*args, **kwargs):
1677
880
"""This function will emit two D-Bus
1678
881
signals by calling func1 and func2"""
1679
882
func1(*args, **kwargs)
1680
883
func2(*args, **kwargs)
1681
# Make wrapper function look like a D-Bus
1682
# signal
1683
for name, attr in inspect.getmembers(func2):
1684
if name.startswith("_dbus_"):
1685
setattr(call_both, name, attr)
1686
1687
884
return call_both
1688
885
# Create the "call_both" function and add it to
1689
886
# the class
1690
attr[attrname] = fixscope(attribute, new_function)
887
attr[attrname] = fixscope(attribute,
888
new_function)
1691
889
# Is this a D-Bus method?
1692
890
elif getattr(attribute, "_dbus_is_method", False):
1693
891
# Create a new, but exactly alike, function
1694
892
# object. Decorate it to be a new D-Bus method
1695
893
# with the alternate D-Bus interface name. Add it
1696
894
# to the class.
1697
attr[attrname] = (
1698
dbus.service.method(
1699
alt_interface,
1700
attribute._dbus_in_signature,
1701
attribute._dbus_out_signature)
1702
(copy_function(attribute)))
1703
# Copy annotations, if any
1704
try:
1705
attr[attrname]._dbus_annotations = dict(
1706
attribute._dbus_annotations)
1707
except AttributeError:
1708
pass
895
attr[attrname] = (dbus.service.method
896
(alt_interface,
897
attribute._dbus_in_signature,
898
attribute._dbus_out_signature)
899
(types.FunctionType
900
(attribute.func_code,
901
attribute.func_globals,
902
attribute.func_name,
903
attribute.func_defaults,
904
attribute.func_closure)))
1709
905
# Is this a D-Bus property?
1710
906
elif getattr(attribute, "_dbus_is_property", False):
1711
907
# Create a new, but exactly alike, function
1712
908
# object, and decorate it to be a new D-Bus
1713
909
# property with the alternate D-Bus interface
1714
910
# name. Add it to the class.
1715
attr[attrname] = (dbus_service_property(
1716
alt_interface, attribute._dbus_signature,
1717
attribute._dbus_access,
1718
attribute._dbus_get_args_options
1719
["byte_arrays"])
1720
(copy_function(attribute)))
1721
# Copy annotations, if any
1722
try:
1723
attr[attrname]._dbus_annotations = dict(
1724
attribute._dbus_annotations)
1725
except AttributeError:
1726
pass
1727
# Is this a D-Bus interface?
1728
elif getattr(attribute, "_dbus_is_interface", False):
1729
# Create a new, but exactly alike, function
1730
# object. Decorate it to be a new D-Bus interface
1731
# with the alternate D-Bus interface name. Add it
1732
# to the class.
1733
attr[attrname] = (
1734
dbus_interface_annotations(alt_interface)
1735
(copy_function(attribute)))
1736
if deprecate:
1737
# Deprecate all alternate interfaces
1738
iname = "_AlternateDBusNames_interface_annotation{}"
1739
for interface_name in interface_names:
1740
1741
@dbus_interface_annotations(interface_name)
1742
def func(self):
1743
return {"org.freedesktop.DBus.Deprecated":
1744
"true"}
1745
# Find an unused name
1746
for aname in (iname.format(i)
1747
for i in itertools.count()):
1748
if aname not in attr:
1749
attr[aname] = func
1750
break
1751
if interface_names:
1752
# Replace the class with a new subclass of it with
1753
# methods, signals, etc. as created above.
1754
if sys.version_info.major == 2:
1755
cls = type(b"{}Alternate".format(cls.__name__),
1756
(cls, ), attr)
1757
else:
1758
cls = type("{}Alternate".format(cls.__name__),
1759
(cls, ), attr)
1760
return cls
1761
1762
return wrapper
1763
1764
1765
@alternate_dbus_interfaces({"se.recompile.Mandos":
1766
"se.bsnet.fukt.Mandos"})
911
attr[attrname] = (dbus_service_property
912
(alt_interface,
913
attribute._dbus_signature,
914
attribute._dbus_access,
915
attribute
916
._dbus_get_args_options
917
["byte_arrays"])
918
(types.FunctionType
919
(attribute.func_code,
920
attribute.func_globals,
921
attribute.func_name,
922
attribute.func_defaults,
923
attribute.func_closure)))
924
return type.__new__(mcs, name, bases, attr)
925
1767
926
class ClientDBus(Client, DBusObjectWithProperties):
1768
927
"""A Client class using D-Bus
1769
928
1770
929
Attributes:
1771
930
dbus_object_path: dbus.ObjectPath
1772
931
bus: dbus.SystemBus()
1773
932
"""
1774
933
1775
934
runtime_expansions = (Client.runtime_expansions
1776
+ ("dbus_object_path", ))
1777
1778
_interface = "se.recompile.Mandos.Client"
1779
935
+ ("dbus_object_path",))
936
1780
937
# dbus.service.Object doesn't use super(), so we can't either.
1781
1782
def __init__(self, bus=None, *args, **kwargs):
938
939
def __init__(self, bus = None, *args, **kwargs):
1783
940
self.bus = bus
1784
941
Client.__init__(self, *args, **kwargs)
942
943
self._approvals_pending = 0
1785
944
# Only now, when this client is initialized, can it show up on
1786
945
# the D-Bus
1787
client_object_name = str(self.name).translate(
946
client_object_name = unicode(self.name).translate(
1788
947
{ord("."): ord("_"),
1789
948
ord("-"): ord("_")})
1790
self.dbus_object_path = dbus.ObjectPath(
1791
"/clients/" + client_object_name)
949
self.dbus_object_path = (dbus.ObjectPath
950
("/clients/" + client_object_name))
1792
951
DBusObjectWithProperties.__init__(self, self.bus,
1793
952
self.dbus_object_path)
1794
1795
def notifychangeproperty(transform_func, dbus_name,
1796
type_func=lambda x: x,
1797
variant_level=1,
1798
invalidate_only=False,
1799
_interface=_interface):
953
954
def notifychangeproperty(transform_func,
955
dbus_name, type_func=lambda x: x,
956
variant_level=1):
1800
957
""" Modify a variable so that it's a property which announces
1801
958
its changes to DBus.
1802
959
1807
964
to the D-Bus. Default: no transform
1808
965
variant_level: D-Bus variant level. Default: 1
1809
966
"""
1810
attrname = "_{}".format(dbus_name)
1811
967
attrname = "_{0}".format(dbus_name)
1812
968
def setter(self, value):
1813
969
if hasattr(self, "dbus_object_path"):
1814
970
if (not hasattr(self, attrname) or
1815
971
type_func(getattr(self, attrname, None))
1816
972
!= type_func(value)):
1817
if invalidate_only:
1818
self.PropertiesChanged(
1819
_interface, dbus.Dictionary(),
1820
dbus.Array((dbus_name, )))
1821
else:
1822
dbus_value = transform_func(
1823
type_func(value),
1824
variant_level=variant_level)
1825
self.PropertyChanged(dbus.String(dbus_name),
1826
dbus_value)
1827
self.PropertiesChanged(
1828
_interface,
1829
dbus.Dictionary({dbus.String(dbus_name):
1830
dbus_value}),
1831
dbus.Array())
973
dbus_value = transform_func(type_func(value),
974
variant_level
975
=variant_level)
976
self.PropertyChanged(dbus.String(dbus_name),
977
dbus_value)
1832
978
setattr(self, attrname, value)
1833
979
1834
980
return property(lambda self: getattr(self, attrname), setter)
1835
981
982
1836
983
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1837
984
approvals_pending = notifychangeproperty(dbus.Boolean,
1838
985
"ApprovalPending",
1839
type_func=bool)
986
type_func = bool)
1840
987
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1841
988
last_enabled = notifychangeproperty(datetime_to_dbus,
1842
989
"LastEnabled")
1843
checker = notifychangeproperty(
1844
dbus.Boolean, "CheckerRunning",
1845
type_func=lambda checker: checker is not None)
990
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
991
type_func = lambda checker:
992
checker is not None)
1846
993
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1847
994
"LastCheckedOK")
1848
last_checker_status = notifychangeproperty(dbus.Int16,
1849
"LastCheckerStatus")
1850
995
last_approval_request = notifychangeproperty(
1851
996
datetime_to_dbus, "LastApprovalRequest")
1852
997
approved_by_default = notifychangeproperty(dbus.Boolean,
1853
998
"ApprovedByDefault")
1854
approval_delay = notifychangeproperty(
1855
dbus.UInt64, "ApprovalDelay",
1856
type_func=lambda td: td.total_seconds() * 1000)
999
approval_delay = notifychangeproperty(dbus.UInt16,
1000
"ApprovalDelay",
1001
type_func =
1002
_timedelta_to_milliseconds)
1857
1003
approval_duration = notifychangeproperty(
1858
dbus.UInt64, "ApprovalDuration",
1859
type_func=lambda td: td.total_seconds() * 1000)
1004
dbus.UInt16, "ApprovalDuration",
1005
type_func = _timedelta_to_milliseconds)
1860
1006
host = notifychangeproperty(dbus.String, "Host")
1861
timeout = notifychangeproperty(
1862
dbus.UInt64, "Timeout",
1863
type_func=lambda td: td.total_seconds() * 1000)
1007
timeout = notifychangeproperty(dbus.UInt16, "Timeout",
1008
type_func =
1009
_timedelta_to_milliseconds)
1864
1010
extended_timeout = notifychangeproperty(
1865
dbus.UInt64, "ExtendedTimeout",
1866
type_func=lambda td: td.total_seconds() * 1000)
1867
interval = notifychangeproperty(
1868
dbus.UInt64, "Interval",
1869
type_func=lambda td: td.total_seconds() * 1000)
1011
dbus.UInt16, "ExtendedTimeout",
1012
type_func = _timedelta_to_milliseconds)
1013
interval = notifychangeproperty(dbus.UInt16,
1014
"Interval",
1015
type_func =
1016
_timedelta_to_milliseconds)
1870
1017
checker_command = notifychangeproperty(dbus.String, "Checker")
1871
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1872
invalidate_only=True)
1873
1018
1874
1019
del notifychangeproperty
1875
1020
1876
1021
def __del__(self, *args, **kwargs):
1877
1022
try:
1878
1023
self.remove_from_connection()
1881
1026
if hasattr(DBusObjectWithProperties, "__del__"):
1882
1027
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1883
1028
Client.__del__(self, *args, **kwargs)
1884
1885
def checker_callback(self, source, condition,
1886
connection, command, *args, **kwargs):
1887
ret = Client.checker_callback(self, source, condition,
1888
connection, command, *args,
1889
**kwargs)
1890
exitstatus = self.last_checker_status
1891
if exitstatus >= 0:
1029
1030
def checker_callback(self, pid, condition, command,
1031
*args, **kwargs):
1032
self.checker_callback_tag = None
1033
self.checker = None
1034
if os.WIFEXITED(condition):
1035
exitstatus = os.WEXITSTATUS(condition)
1892
1036
# Emit D-Bus signal
1893
1037
self.CheckerCompleted(dbus.Int16(exitstatus),
1894
# This is specific to GNU libC
1895
dbus.Int64(exitstatus << 8),
1038
dbus.Int64(condition),
1896
1039
dbus.String(command))
1897
1040
else:
1898
1041
# Emit D-Bus signal
1899
1042
self.CheckerCompleted(dbus.Int16(-1),
1900
dbus.Int64(
1901
# This is specific to GNU libC
1902
(exitstatus << 8)
1903
| self.last_checker_signal),
1043
dbus.Int64(condition),
1904
1044
dbus.String(command))
1905
return ret
1906
1045
1046
return Client.checker_callback(self, pid, condition, command,
1047
*args, **kwargs)
1048
1907
1049
def start_checker(self, *args, **kwargs):
1908
old_checker_pid = getattr(self.checker, "pid", None)
1050
old_checker = self.checker
1051
if self.checker is not None:
1052
old_checker_pid = self.checker.pid
1053
else:
1054
old_checker_pid = None
1909
1055
r = Client.start_checker(self, *args, **kwargs)
1910
1056
# Only if new checker process was started
1911
1057
if (self.checker is not None
1913
1059
# Emit D-Bus signal
1914
1060
self.CheckerStarted(self.current_checker_command)
1915
1061
return r
1916
1062
1917
1063
def _reset_approved(self):
1918
self.approved = None
1064
self._approved = None
1919
1065
return False
1920
1066
1921
1067
def approve(self, value=True):
1922
self.approved = value
1923
GLib.timeout_add(int(self.approval_duration.total_seconds()
1924
* 1000), self._reset_approved)
1925
1068
self.send_changedstate()
1926
1927
# D-Bus methods, signals & properties
1928
1929
# Interfaces
1930
1931
# Signals
1932
1069
self._approved = value
1070
gobject.timeout_add(_timedelta_to_milliseconds
1071
(self.approval_duration),
1072
self._reset_approved)
1073
1074
1075
## D-Bus methods, signals & properties
1076
_interface = "se.recompile.Mandos.Client"
1077
1078
## Signals
1079
1933
1080
# CheckerCompleted - signal
1934
1081
@dbus.service.signal(_interface, signature="nxs")
1935
1082
def CheckerCompleted(self, exitcode, waitstatus, command):
1936
1083
"D-Bus signal"
1937
1084
pass
1938
1085
1939
1086
# CheckerStarted - signal
1940
1087
@dbus.service.signal(_interface, signature="s")
1941
1088
def CheckerStarted(self, command):
1942
1089
"D-Bus signal"
1943
1090
pass
1944
1091
1945
1092
# PropertyChanged - signal
1946
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1947
1093
@dbus.service.signal(_interface, signature="sv")
1948
1094
def PropertyChanged(self, property, value):
1949
1095
"D-Bus signal"
1950
1096
pass
1951
1097
1952
1098
# GotSecret - signal
1953
1099
@dbus.service.signal(_interface)
1954
1100
def GotSecret(self):
1957
1103
server to mandos-client
1958
1104
"""
1959
1105
pass
1960
1106
1961
1107
# Rejected - signal
1962
1108
@dbus.service.signal(_interface, signature="s")
1963
1109
def Rejected(self, reason):
1964
1110
"D-Bus signal"
1965
1111
pass
1966
1112
1967
1113
# NeedApproval - signal
1968
1114
@dbus.service.signal(_interface, signature="tb")
1969
1115
def NeedApproval(self, timeout, default):
1970
1116
"D-Bus signal"
1971
1117
return self.need_approval()
1972
1973
# Methods
1974
1118
1119
## Methods
1120
1975
1121
# Approve - method
1976
1122
@dbus.service.method(_interface, in_signature="b")
1977
1123
def Approve(self, value):
1978
1124
self.approve(value)
1979
1125
1980
1126
# CheckedOK - method
1981
1127
@dbus.service.method(_interface)
1982
1128
def CheckedOK(self):
1983
1129
self.checked_ok()
1984
1130
1985
1131
# Enable - method
1986
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1987
1132
@dbus.service.method(_interface)
1988
1133
def Enable(self):
1989
1134
"D-Bus method"
1990
1135
self.enable()
1991
1136
1992
1137
# StartChecker - method
1993
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1994
1138
@dbus.service.method(_interface)
1995
1139
def StartChecker(self):
1996
1140
"D-Bus method"
1997
1141
self.start_checker()
1998
1142
1999
1143
# Disable - method
2000
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2001
1144
@dbus.service.method(_interface)
2002
1145
def Disable(self):
2003
1146
"D-Bus method"
2004
1147
self.disable()
2005
1148
2006
1149
# StopChecker - method
2007
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2008
1150
@dbus.service.method(_interface)
2009
1151
def StopChecker(self):
2010
1152
self.stop_checker()
2011
2012
# Properties
2013
1153
1154
## Properties
1155
2014
1156
# ApprovalPending - property
2015
1157
@dbus_service_property(_interface, signature="b", access="read")
2016
1158
def ApprovalPending_dbus_property(self):
2017
1159
return dbus.Boolean(bool(self.approvals_pending))
2018
1160
2019
1161
# ApprovedByDefault - property
2020
@dbus_service_property(_interface,
2021
signature="b",
1162
@dbus_service_property(_interface, signature="b",
2022
1163
access="readwrite")
2023
1164
def ApprovedByDefault_dbus_property(self, value=None):
2024
1165
if value is None: # get
2025
1166
return dbus.Boolean(self.approved_by_default)
2026
1167
self.approved_by_default = bool(value)
2027
1168
2028
1169
# ApprovalDelay - property
2029
@dbus_service_property(_interface,
2030
signature="t",
1170
@dbus_service_property(_interface, signature="t",
2031
1171
access="readwrite")
2032
1172
def ApprovalDelay_dbus_property(self, value=None):
2033
1173
if value is None: # get
2034
return dbus.UInt64(self.approval_delay.total_seconds()
2035
* 1000)
1174
return dbus.UInt64(self.approval_delay_milliseconds())
2036
1175
self.approval_delay = datetime.timedelta(0, 0, 0, value)
2037
1176
2038
1177
# ApprovalDuration - property
2039
@dbus_service_property(_interface,
2040
signature="t",
1178
@dbus_service_property(_interface, signature="t",
2041
1179
access="readwrite")
2042
1180
def ApprovalDuration_dbus_property(self, value=None):
2043
1181
if value is None: # get
2044
return dbus.UInt64(self.approval_duration.total_seconds()
2045
* 1000)
1182
return dbus.UInt64(_timedelta_to_milliseconds(
1183
self.approval_duration))
2046
1184
self.approval_duration = datetime.timedelta(0, 0, 0, value)
2047
1185
2048
1186
# Name - property
2049
@dbus_annotations(
2050
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2051
1187
@dbus_service_property(_interface, signature="s", access="read")
2052
1188
def Name_dbus_property(self):
2053
1189
return dbus.String(self.name)
2054
2055
# KeyID - property
2056
@dbus_annotations(
2057
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2058
@dbus_service_property(_interface, signature="s", access="read")
2059
def KeyID_dbus_property(self):
2060
return dbus.String(self.key_id)
2061
1190
2062
1191
# Fingerprint - property
2063
@dbus_annotations(
2064
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2065
1192
@dbus_service_property(_interface, signature="s", access="read")
2066
1193
def Fingerprint_dbus_property(self):
2067
1194
return dbus.String(self.fingerprint)
2068
1195
2069
1196
# Host - property
2070
@dbus_service_property(_interface,
2071
signature="s",
1197
@dbus_service_property(_interface, signature="s",
2072
1198
access="readwrite")
2073
1199
def Host_dbus_property(self, value=None):
2074
1200
if value is None: # get
2075
1201
return dbus.String(self.host)
2076
self.host = str(value)
2077
1202
self.host = value
1203
2078
1204
# Created - property
2079
@dbus_annotations(
2080
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2081
1205
@dbus_service_property(_interface, signature="s", access="read")
2082
1206
def Created_dbus_property(self):
2083
return datetime_to_dbus(self.created)
2084
1207
return dbus.String(datetime_to_dbus(self.created))
1208
2085
1209
# LastEnabled - property
2086
1210
@dbus_service_property(_interface, signature="s", access="read")
2087
1211
def LastEnabled_dbus_property(self):
2088
1212
return datetime_to_dbus(self.last_enabled)
2089
1213
2090
1214
# Enabled - property
2091
@dbus_service_property(_interface,
2092
signature="b",
1215
@dbus_service_property(_interface, signature="b",
2093
1216
access="readwrite")
2094
1217
def Enabled_dbus_property(self, value=None):
2095
1218
if value is None: # get
2098
1221
self.enable()
2099
1222
else:
2100
1223
self.disable()
2101
1224
2102
1225
# LastCheckedOK - property
2103
@dbus_service_property(_interface,
2104
signature="s",
1226
@dbus_service_property(_interface, signature="s",
2105
1227
access="readwrite")
2106
1228
def LastCheckedOK_dbus_property(self, value=None):
2107
1229
if value is not None:
2108
1230
self.checked_ok()
2109
1231
return
2110
1232
return datetime_to_dbus(self.last_checked_ok)
2111
2112
# LastCheckerStatus - property
2113
@dbus_service_property(_interface, signature="n", access="read")
2114
def LastCheckerStatus_dbus_property(self):
2115
return dbus.Int16(self.last_checker_status)
2116
1233
2117
1234
# Expires - property
2118
1235
@dbus_service_property(_interface, signature="s", access="read")
2119
1236
def Expires_dbus_property(self):
2120
1237
return datetime_to_dbus(self.expires)
2121
1238
2122
1239
# LastApprovalRequest - property
2123
1240
@dbus_service_property(_interface, signature="s", access="read")
2124
1241
def LastApprovalRequest_dbus_property(self):
2125
1242
return datetime_to_dbus(self.last_approval_request)
2126
1243
2127
1244
# Timeout - property
2128
@dbus_service_property(_interface,
2129
signature="t",
1245
@dbus_service_property(_interface, signature="t",
2130
1246
access="readwrite")
2131
1247
def Timeout_dbus_property(self, value=None):
2132
1248
if value is None: # get
2133
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2134
old_timeout = self.timeout
1249
return dbus.UInt64(self.timeout_milliseconds())
2135
1250
self.timeout = datetime.timedelta(0, 0, 0, value)
2136
# Reschedule disabling
2137
if self.enabled:
2138
now = datetime.datetime.utcnow()
2139
self.expires += self.timeout - old_timeout
2140
if self.expires <= now:
2141
# The timeout has passed
2142
self.disable()
2143
else:
2144
if (getattr(self, "disable_initiator_tag", None)
2145
is None):
2146
return
2147
GLib.source_remove(self.disable_initiator_tag)
2148
self.disable_initiator_tag = GLib.timeout_add(
2149
int((self.expires - now).total_seconds() * 1000),
2150
self.disable)
2151
1251
if getattr(self, "disable_initiator_tag", None) is None:
1252
return
1253
# Reschedule timeout
1254
gobject.source_remove(self.disable_initiator_tag)
1255
self.disable_initiator_tag = None
1256
self.expires = None
1257
time_to_die = _timedelta_to_milliseconds((self
1258
.last_checked_ok
1259
+ self.timeout)
1260
- datetime.datetime
1261
.utcnow())
1262
if time_to_die <= 0:
1263
# The timeout has passed
1264
self.disable()
1265
else:
1266
self.expires = (datetime.datetime.utcnow()
1267
+ datetime.timedelta(milliseconds =
1268
time_to_die))
1269
self.disable_initiator_tag = (gobject.timeout_add
1270
(time_to_die, self.disable))
1271
2152
1272
# ExtendedTimeout - property
2153
@dbus_service_property(_interface,
2154
signature="t",
1273
@dbus_service_property(_interface, signature="t",
2155
1274
access="readwrite")
2156
1275
def ExtendedTimeout_dbus_property(self, value=None):
2157
1276
if value is None: # get
2158
return dbus.UInt64(self.extended_timeout.total_seconds()
2159
* 1000)
1277
return dbus.UInt64(self.extended_timeout_milliseconds())
2160
1278
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2161
1279
2162
1280
# Interval - property
2163
@dbus_service_property(_interface,
2164
signature="t",
1281
@dbus_service_property(_interface, signature="t",
2165
1282
access="readwrite")
2166
1283
def Interval_dbus_property(self, value=None):
2167
1284
if value is None: # get
2168
return dbus.UInt64(self.interval.total_seconds() * 1000)
1285
return dbus.UInt64(self.interval_milliseconds())
2169
1286
self.interval = datetime.timedelta(0, 0, 0, value)
2170
1287
if getattr(self, "checker_initiator_tag", None) is None:
2171
1288
return
2172
if self.enabled:
2173
# Reschedule checker run
2174
GLib.source_remove(self.checker_initiator_tag)
2175
self.checker_initiator_tag = GLib.timeout_add(
2176
value, self.start_checker)
2177
self.start_checker() # Start one now, too
2178
1289
# Reschedule checker run
1290
gobject.source_remove(self.checker_initiator_tag)
1291
self.checker_initiator_tag = (gobject.timeout_add
1292
(value, self.start_checker))
1293
self.start_checker() # Start one now, too
1294
2179
1295
# Checker - property
2180
@dbus_service_property(_interface,
2181
signature="s",
1296
@dbus_service_property(_interface, signature="s",
2182
1297
access="readwrite")
2183
1298
def Checker_dbus_property(self, value=None):
2184
1299
if value is None: # get
2185
1300
return dbus.String(self.checker_command)
2186
self.checker_command = str(value)
2187
1301
self.checker_command = value
1302
2188
1303
# CheckerRunning - property
2189
@dbus_service_property(_interface,
2190
signature="b",
1304
@dbus_service_property(_interface, signature="b",
2191
1305
access="readwrite")
2192
1306
def CheckerRunning_dbus_property(self, value=None):
2193
1307
if value is None: # get
2196
1310
self.start_checker()
2197
1311
else:
2198
1312
self.stop_checker()
2199
1313
2200
1314
# ObjectPath - property
2201
@dbus_annotations(
2202
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2203
"org.freedesktop.DBus.Deprecated": "true"})
2204
1315
@dbus_service_property(_interface, signature="o", access="read")
2205
1316
def ObjectPath_dbus_property(self):
2206
return self.dbus_object_path # is already a dbus.ObjectPath
2207
1317
return self.dbus_object_path # is already a dbus.ObjectPath
1318
2208
1319
# Secret = property
2209
@dbus_annotations(
2210
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2211
"invalidates"})
2212
@dbus_service_property(_interface,
2213
signature="ay",
2214
access="write",
2215
byte_arrays=True)
1320
@dbus_service_property(_interface, signature="ay",
1321
access="write", byte_arrays=True)
2216
1322
def Secret_dbus_property(self, value):
2217
self.secret = bytes(value)
2218
1323
self.secret = str(value)
1324
2219
1325
del _interface
2220
1326
2221
1327
2222
1328
class ProxyClient(object):
2223
def __init__(self, child_pipe, key_id, fpr, address):
1329
def __init__(self, child_pipe, fpr, address):
2224
1330
self._pipe = child_pipe
2225
self._pipe.send(('init', key_id, fpr, address))
1331
self._pipe.send(('init', fpr, address))
2226
1332
if not self._pipe.recv():
2227
raise KeyError(key_id or fpr)
2228
1333
raise KeyError()
1334
2229
1335
def __getattribute__(self, name):
2230
if name == '_pipe':
1336
if(name == '_pipe'):
2231
1337
return super(ProxyClient, self).__getattribute__(name)
2232
1338
self._pipe.send(('getattr', name))
2233
1339
data = self._pipe.recv()
2234
1340
if data[0] == 'data':
2235
1341
return data[1]
2236
1342
if data[0] == 'function':
2237
2238
1343
def func(*args, **kwargs):
2239
1344
self._pipe.send(('funcall', name, args, kwargs))
2240
1345
return self._pipe.recv()[1]
2241
2242
1346
return func
2243
1347
2244
1348
def __setattr__(self, name, value):
2245
if name == '_pipe':
1349
if(name == '_pipe'):
2246
1350
return super(ProxyClient, self).__setattr__(name, value)
2247
1351
self._pipe.send(('setattr', name, value))
2248
1352
1353
class ClientDBusTransitional(ClientDBus):
1354
__metaclass__ = AlternateDBusNamesMetaclass
2249
1355
2250
1356
class ClientHandler(socketserver.BaseRequestHandler, object):
2251
1357
"""A class to handle client connections.
2252
1358
2253
1359
Instantiated once for each connection to handle it.
2254
1360
Note: This will run in its own forked process."""
2255
1361
2256
1362
def handle(self):
2257
1363
with contextlib.closing(self.server.child_pipe) as child_pipe:
2258
1364
logger.info("TCP connection from: %s",
2259
str(self.client_address))
1365
unicode(self.client_address))
2260
1366
logger.debug("Pipe FD: %d",
2261
1367
self.server.child_pipe.fileno())
2262
2263
session = gnutls.ClientSession(self.request)
2264
2265
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2266
# "+AES-256-CBC", "+SHA1",
2267
# "+COMP-NULL", "+CTYPE-OPENPGP",
2268
# "+DHE-DSS"))
1368
1369
session = (gnutls.connection
1370
.ClientSession(self.request,
1371
gnutls.connection
1372
.X509Credentials()))
1373
1374
# Note: gnutls.connection.X509Credentials is really a
1375
# generic GnuTLS certificate credentials object so long as
1376
# no X.509 keys are added to it. Therefore, we can use it
1377
# here despite using OpenPGP certificates.
1378
1379
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1380
# "+AES-256-CBC", "+SHA1",
1381
# "+COMP-NULL", "+CTYPE-OPENPGP",
1382
# "+DHE-DSS"))
2269
1383
# Use a fallback default, since this MUST be set.
2270
1384
priority = self.server.gnutls_priority
2271
1385
if priority is None:
2272
1386
priority = "NORMAL"
2273
gnutls.priority_set_direct(session._c_object,
2274
priority.encode("utf-8"),
2275
None)
2276
1387
(gnutls.library.functions
1388
.gnutls_priority_set_direct(session._c_object,
1389
priority, None))
1390
2277
1391
# Start communication using the Mandos protocol
2278
1392
# Get protocol number
2279
1393
line = self.request.makefile().readline()
2280
1394
logger.debug("Protocol version: %r", line)
2281
1395
try:
2282
1396
if int(line.strip().split()[0]) > 1:
2283
raise RuntimeError(line)
1397
raise RuntimeError
2284
1398
except (ValueError, IndexError, RuntimeError) as error:
2285
1399
logger.error("Unknown protocol version: %s", error)
2286
1400
return
2287
1401
2288
1402
# Start GnuTLS connection
2289
1403
try:
2290
1404
session.handshake()
2291
except gnutls.Error as error:
1405
except gnutls.errors.GNUTLSError as error:
2292
1406
logger.warning("Handshake failed: %s", error)
2293
1407
# Do not run session.bye() here: the session is not
2294
1408
# established. Just abandon the request.
2295
1409
return
2296
1410
logger.debug("Handshake succeeded")
2297
1411
2298
1412
approval_required = False
2299
1413
try:
2300
if gnutls.has_rawpk:
2301
fpr = ""
2302
try:
2303
key_id = self.key_id(
2304
self.peer_certificate(session))
2305
except (TypeError, gnutls.Error) as error:
2306
logger.warning("Bad certificate: %s", error)
2307
return
2308
logger.debug("Key ID: %s", key_id)
2309
2310
else:
2311
key_id = ""
2312
try:
2313
fpr = self.fingerprint(
2314
self.peer_certificate(session))
2315
except (TypeError, gnutls.Error) as error:
2316
logger.warning("Bad certificate: %s", error)
2317
return
2318
logger.debug("Fingerprint: %s", fpr)
2319
2320
try:
2321
client = ProxyClient(child_pipe, key_id, fpr,
1414
try:
1415
fpr = self.fingerprint(self.peer_certificate
1416
(session))
1417
except (TypeError,
1418
gnutls.errors.GNUTLSError) as error:
1419
logger.warning("Bad certificate: %s", error)
1420
return
1421
logger.debug("Fingerprint: %s", fpr)
1422
1423
try:
1424
client = ProxyClient(child_pipe, fpr,
2322
1425
self.client_address)
2323
1426
except KeyError:
2324
1427
return
2325
1428
2326
1429
if client.approval_delay:
2327
1430
delay = client.approval_delay
2328
1431
client.approvals_pending += 1
2329
1432
approval_required = True
2330
1433
2331
1434
while True:
2332
1435
if not client.enabled:
2333
1436
logger.info("Client %s is disabled",
2334
client.name)
1437
client.name)
2335
1438
if self.server.use_dbus:
2336
1439
# Emit D-Bus signal
2337
1440
client.Rejected("Disabled")
2338
1441
return
2339
2340
if client.approved or not client.approval_delay:
2341
# We are approved or approval is disabled
1442
1443
if client._approved or not client.approval_delay:
1444
#We are approved or approval is disabled
2342
1445
break
2343
elif client.approved is None:
1446
elif client._approved is None:
2344
1447
logger.info("Client %s needs approval",
2345
1448
client.name)
2346
1449
if self.server.use_dbus:
2347
1450
# Emit D-Bus signal
2348
1451
client.NeedApproval(
2349
client.approval_delay.total_seconds()
2350
* 1000, client.approved_by_default)
1452
client.approval_delay_milliseconds(),
1453
client.approved_by_default)
2351
1454
else:
2352
1455
logger.warning("Client %s was not approved",
2353
1456
client.name)
2355
1458
# Emit D-Bus signal
2356
1459
client.Rejected("Denied")
2357
1460
return
2358
2359
# wait until timeout or approved
1461
1462
#wait until timeout or approved
2360
1463
time = datetime.datetime.now()
2361
1464
client.changedstate.acquire()
2362
client.changedstate.wait(delay.total_seconds())
1465
(client.changedstate.wait
1466
(float(client._timedelta_to_milliseconds(delay)
1467
/ 1000)))
2363
1468
client.changedstate.release()
2364
1469
time2 = datetime.datetime.now()
2365
1470
if (time2 - time) >= delay:
2375
1480
break
2376
1481
else:
2377
1482
delay -= time2 - time
2378
2379
try:
2380
session.send(client.secret)
2381
except gnutls.Error as error:
2382
logger.warning("gnutls send failed",
2383
exc_info=error)
2384
return
2385
1483
1484
sent_size = 0
1485
while sent_size < len(client.secret):
1486
try:
1487
sent = session.send(client.secret[sent_size:])
1488
except gnutls.errors.GNUTLSError as error:
1489
logger.warning("gnutls send failed")
1490
return
1491
logger.debug("Sent: %d, remaining: %d",
1492
sent, len(client.secret)
1493
- (sent_size + sent))
1494
sent_size += sent
1495
2386
1496
logger.info("Sending secret to %s", client.name)
2387
1497
# bump the timeout using extended_timeout
2388
client.bump_timeout(client.extended_timeout)
1498
client.checked_ok(client.extended_timeout)
2389
1499
if self.server.use_dbus:
2390
1500
# Emit D-Bus signal
2391
1501
client.GotSecret()
2392
1502
2393
1503
finally:
2394
1504
if approval_required:
2395
1505
client.approvals_pending -= 1
2396
1506
try:
2397
1507
session.bye()
2398
except gnutls.Error as error:
2399
logger.warning("GnuTLS bye failed",
2400
exc_info=error)
2401
1508
except gnutls.errors.GNUTLSError as error:
1509
logger.warning("GnuTLS bye failed")
1510
2402
1511
@staticmethod
2403
1512
def peer_certificate(session):
2404
"Return the peer's certificate as a bytestring"
2405
try:
2406
cert_type = gnutls.certificate_type_get2(session._c_object,
2407
gnutls.CTYPE_PEERS)
2408
except AttributeError:
2409
cert_type = gnutls.certificate_type_get(session._c_object)
2410
if gnutls.has_rawpk:
2411
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2412
else:
2413
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2414
# If not a valid certificate type...
2415
if cert_type not in valid_cert_types:
2416
logger.info("Cert type %r not in %r", cert_type,
2417
valid_cert_types)
2418
# ...return invalid data
2419
return b""
1513
"Return the peer's OpenPGP certificate as a bytestring"
1514
# If not an OpenPGP certificate...
1515
if (gnutls.library.functions
1516
.gnutls_certificate_type_get(session._c_object)
1517
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1518
# ...do the normal thing
1519
return session.peer_certificate
2420
1520
list_size = ctypes.c_uint(1)
2421
cert_list = (gnutls.certificate_get_peers
1521
cert_list = (gnutls.library.functions
1522
.gnutls_certificate_get_peers
2422
1523
(session._c_object, ctypes.byref(list_size)))
2423
1524
if not bool(cert_list) and list_size.value != 0:
2424
raise gnutls.Error("error getting peer certificate")
1525
raise gnutls.errors.GNUTLSError("error getting peer"
1526
" certificate")
2425
1527
if list_size.value == 0:
2426
1528
return None
2427
1529
cert = cert_list[0]
2428
1530
return ctypes.string_at(cert.data, cert.size)
2429
2430
@staticmethod
2431
def key_id(certificate):
2432
"Convert a certificate bytestring to a hexdigit key ID"
2433
# New GnuTLS "datum" with the public key
2434
datum = gnutls.datum_t(
2435
ctypes.cast(ctypes.c_char_p(certificate),
2436
ctypes.POINTER(ctypes.c_ubyte)),
2437
ctypes.c_uint(len(certificate)))
2438
# XXX all these need to be created in the gnutls "module"
2439
# New empty GnuTLS certificate
2440
pubkey = gnutls.pubkey_t()
2441
gnutls.pubkey_init(ctypes.byref(pubkey))
2442
# Import the raw public key into the certificate
2443
gnutls.pubkey_import(pubkey,
2444
ctypes.byref(datum),
2445
gnutls.X509_FMT_DER)
2446
# New buffer for the key ID
2447
buf = ctypes.create_string_buffer(32)
2448
buf_len = ctypes.c_size_t(len(buf))
2449
# Get the key ID from the raw public key into the buffer
2450
gnutls.pubkey_get_key_id(pubkey,
2451
gnutls.KEYID_USE_SHA256,
2452
ctypes.cast(ctypes.byref(buf),
2453
ctypes.POINTER(ctypes.c_ubyte)),
2454
ctypes.byref(buf_len))
2455
# Deinit the certificate
2456
gnutls.pubkey_deinit(pubkey)
2457
2458
# Convert the buffer to a Python bytestring
2459
key_id = ctypes.string_at(buf, buf_len.value)
2460
# Convert the bytestring to hexadecimal notation
2461
hex_key_id = binascii.hexlify(key_id).upper()
2462
return hex_key_id
2463
1531
2464
1532
@staticmethod
2465
1533
def fingerprint(openpgp):
2466
1534
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2467
1535
# New GnuTLS "datum" with the OpenPGP public key
2468
datum = gnutls.datum_t(
2469
ctypes.cast(ctypes.c_char_p(openpgp),
2470
ctypes.POINTER(ctypes.c_ubyte)),
2471
ctypes.c_uint(len(openpgp)))
1536
datum = (gnutls.library.types
1537
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1538
ctypes.POINTER
1539
(ctypes.c_ubyte)),
1540
ctypes.c_uint(len(openpgp))))
2472
1541
# New empty GnuTLS certificate
2473
crt = gnutls.openpgp_crt_t()
2474
gnutls.openpgp_crt_init(ctypes.byref(crt))
1542
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1543
(gnutls.library.functions
1544
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2475
1545
# Import the OpenPGP public key into the certificate
2476
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2477
gnutls.OPENPGP_FMT_RAW)
1546
(gnutls.library.functions
1547
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1548
gnutls.library.constants
1549
.GNUTLS_OPENPGP_FMT_RAW))
2478
1550
# Verify the self signature in the key
2479
1551
crtverify = ctypes.c_uint()
2480
gnutls.openpgp_crt_verify_self(crt, 0,
2481
ctypes.byref(crtverify))
1552
(gnutls.library.functions
1553
.gnutls_openpgp_crt_verify_self(crt, 0,
1554
ctypes.byref(crtverify)))
2482
1555
if crtverify.value != 0:
2483
gnutls.openpgp_crt_deinit(crt)
2484
raise gnutls.CertificateSecurityError(code
2485
=crtverify.value)
1556
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1557
raise (gnutls.errors.CertificateSecurityError
1558
("Verify failed"))
2486
1559
# New buffer for the fingerprint
2487
1560
buf = ctypes.create_string_buffer(20)
2488
1561
buf_len = ctypes.c_size_t()
2489
1562
# Get the fingerprint from the certificate into the buffer
2490
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2491
ctypes.byref(buf_len))
1563
(gnutls.library.functions
1564
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1565
ctypes.byref(buf_len)))
2492
1566
# Deinit the certificate
2493
gnutls.openpgp_crt_deinit(crt)
1567
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2494
1568
# Convert the buffer to a Python bytestring
2495
1569
fpr = ctypes.string_at(buf, buf_len.value)
2496
1570
# Convert the bytestring to hexadecimal notation
2497
hex_fpr = binascii.hexlify(fpr).upper()
1571
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
2498
1572
return hex_fpr
2499
1573
2500
1574
2501
1575
class MultiprocessingMixIn(object):
2502
1576
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2503
2504
1577
def sub_process_main(self, request, address):
2505
1578
try:
2506
1579
self.finish_request(request, address)
2507
except Exception:
1580
except:
2508
1581
self.handle_error(request, address)
2509
1582
self.close_request(request)
2510
1583
2511
1584
def process_request(self, request, address):
2512
1585
"""Start a new process to process the request."""
2513
proc = multiprocessing.Process(target=self.sub_process_main,
2514
args=(request, address))
1586
proc = multiprocessing.Process(target = self.sub_process_main,
1587
args = (request,
1588
address))
2515
1589
proc.start()
2516
1590
return proc
2517
1591
2518
1592
2519
1593
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2520
1594
""" adds a pipe to the MixIn """
2521
2522
1595
def process_request(self, request, client_address):
2523
1596
"""Overrides and wraps the original process_request().
2524
1597
2525
1598
This function creates a new pipe in self.pipe
2526
1599
"""
2527
1600
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2528
1601
2529
1602
proc = MultiprocessingMixIn.process_request(self, request,
2530
1603
client_address)
2531
1604
self.child_pipe.close()
2532
1605
self.add_pipe(parent_pipe, proc)
2533
1606
2534
1607
def add_pipe(self, parent_pipe, proc):
2535
1608
"""Dummy function; override as necessary"""
2536
raise NotImplementedError()
1609
raise NotImplementedError
2537
1610
2538
1611
2539
1612
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2540
1613
socketserver.TCPServer, object):
2541
1614
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
2542
1615
2543
1616
Attributes:
2544
1617
enabled: Boolean; whether this server is activated yet
2545
1618
interface: None or a network interface name (string)
2546
1619
use_ipv6: Boolean; to use IPv6 or not
2547
1620
"""
2548
2549
1621
def __init__(self, server_address, RequestHandlerClass,
2550
interface=None,
2551
use_ipv6=True,
2552
socketfd=None):
2553
"""If socketfd is set, use that file descriptor instead of
2554
creating a new one with socket.socket().
2555
"""
1622
interface=None, use_ipv6=True):
2556
1623
self.interface = interface
2557
1624
if use_ipv6:
2558
1625
self.address_family = socket.AF_INET6
2559
if socketfd is not None:
2560
# Save the file descriptor
2561
self.socketfd = socketfd
2562
# Save the original socket.socket() function
2563
self.socket_socket = socket.socket
2564
2565
# To implement --socket, we monkey patch socket.socket.
2566
#
2567
# (When socketserver.TCPServer is a new-style class, we
2568
# could make self.socket into a property instead of monkey
2569
# patching socket.socket.)
2570
#
2571
# Create a one-time-only replacement for socket.socket()
2572
@functools.wraps(socket.socket)
2573
def socket_wrapper(*args, **kwargs):
2574
# Restore original function so subsequent calls are
2575
# not affected.
2576
socket.socket = self.socket_socket
2577
del self.socket_socket
2578
# This time only, return a new socket object from the
2579
# saved file descriptor.
2580
return socket.fromfd(self.socketfd, *args, **kwargs)
2581
# Replace socket.socket() function with wrapper
2582
socket.socket = socket_wrapper
2583
# The socketserver.TCPServer.__init__ will call
2584
# socket.socket(), which might be our replacement,
2585
# socket_wrapper(), if socketfd was set.
2586
1626
socketserver.TCPServer.__init__(self, server_address,
2587
1627
RequestHandlerClass)
2588
2589
1628
def server_bind(self):
2590
1629
"""This overrides the normal server_bind() function
2591
1630
to bind to an interface if one was specified, and also NOT to
2592
1631
bind to an address or port if they were not specified."""
2593
global SO_BINDTODEVICE
2594
1632
if self.interface is not None:
2595
1633
if SO_BINDTODEVICE is None:
2596
# Fall back to a hard-coded value which seems to be
2597
# common enough.
2598
logger.warning("SO_BINDTODEVICE not found, trying 25")
2599
SO_BINDTODEVICE = 25
2600
try:
2601
self.socket.setsockopt(
2602
socket.SOL_SOCKET, SO_BINDTODEVICE,
2603
(self.interface + "\0").encode("utf-8"))
2604
except socket.error as error:
2605
if error.errno == errno.EPERM:
2606
logger.error("No permission to bind to"
2607
" interface %s", self.interface)
2608
elif error.errno == errno.ENOPROTOOPT:
2609
logger.error("SO_BINDTODEVICE not available;"
2610
" cannot bind to interface %s",
2611
self.interface)
2612
elif error.errno == errno.ENODEV:
2613
logger.error("Interface %s does not exist,"
2614
" cannot bind", self.interface)
2615
else:
2616
raise
1634
logger.error("SO_BINDTODEVICE does not exist;"
1635
" cannot bind to interface %s",
1636
self.interface)
1637
else:
1638
try:
1639
self.socket.setsockopt(socket.SOL_SOCKET,
1640
SO_BINDTODEVICE,
1641
str(self.interface
1642
+ '\0'))
1643
except socket.error as error:
1644
if error[0] == errno.EPERM:
1645
logger.error("No permission to"
1646
" bind to interface %s",
1647
self.interface)
1648
elif error[0] == errno.ENOPROTOOPT:
1649
logger.error("SO_BINDTODEVICE not available;"
1650
" cannot bind to interface %s",
1651
self.interface)
1652
else:
1653
raise
2617
1654
# Only bind(2) the socket if we really need to.
2618
1655
if self.server_address[0] or self.server_address[1]:
2619
1656
if not self.server_address[0]:
2620
1657
if self.address_family == socket.AF_INET6:
2621
any_address = "::" # in6addr_any
1658
any_address = "::" # in6addr_any
2622
1659
else:
2623
any_address = "0.0.0.0" # INADDR_ANY
1660
any_address = socket.INADDR_ANY
2624
1661
self.server_address = (any_address,
2625
1662
self.server_address[1])
2626
1663
elif not self.server_address[1]:
2627
self.server_address = (self.server_address[0], 0)
1664
self.server_address = (self.server_address[0],
1665
0)
2628
1666
# if self.interface:
2629
1667
# self.server_address = (self.server_address[0],
2630
1668
# 0, # port
2636
1674
2637
1675
class MandosServer(IPv6_TCPServer):
2638
1676
"""Mandos server.
2639
1677
2640
1678
Attributes:
2641
1679
clients: set of Client objects
2642
1680
gnutls_priority GnuTLS priority string
2643
1681
use_dbus: Boolean; to emit D-Bus signals or not
2644
2645
Assumes a GLib.MainLoop event loop.
1682
1683
Assumes a gobject.MainLoop event loop.
2646
1684
"""
2647
2648
1685
def __init__(self, server_address, RequestHandlerClass,
2649
interface=None,
2650
use_ipv6=True,
2651
clients=None,
2652
gnutls_priority=None,
2653
use_dbus=True,
2654
socketfd=None):
1686
interface=None, use_ipv6=True, clients=None,
1687
gnutls_priority=None, use_dbus=True):
2655
1688
self.enabled = False
2656
1689
self.clients = clients
2657
1690
if self.clients is None:
2660
1693
self.gnutls_priority = gnutls_priority
2661
1694
IPv6_TCPServer.__init__(self, server_address,
2662
1695
RequestHandlerClass,
2663
interface=interface,
2664
use_ipv6=use_ipv6,
2665
socketfd=socketfd)
2666
1696
interface = interface,
1697
use_ipv6 = use_ipv6)
2667
1698
def server_activate(self):
2668
1699
if self.enabled:
2669
1700
return socketserver.TCPServer.server_activate(self)
2670
1701
2671
1702
def enable(self):
2672
1703
self.enabled = True
2673
1704
2674
1705
def add_pipe(self, parent_pipe, proc):
2675
1706
# Call "handle_ipc" for both data and EOF events
2676
GLib.io_add_watch(
2677
parent_pipe.fileno(),
2678
GLib.IO_IN | GLib.IO_HUP,
2679
functools.partial(self.handle_ipc,
2680
parent_pipe=parent_pipe,
2681
proc=proc))
2682
2683
def handle_ipc(self, source, condition,
2684
parent_pipe=None,
2685
proc=None,
2686
client_object=None):
1707
gobject.io_add_watch(parent_pipe.fileno(),
1708
gobject.IO_IN | gobject.IO_HUP,
1709
functools.partial(self.handle_ipc,
1710
parent_pipe =
1711
parent_pipe,
1712
proc = proc))
1713
1714
def handle_ipc(self, source, condition, parent_pipe=None,
1715
proc = None, client_object=None):
1716
condition_names = {
1717
gobject.IO_IN: "IN", # There is data to read.
1718
gobject.IO_OUT: "OUT", # Data can be written (without
1719
# blocking).
1720
gobject.IO_PRI: "PRI", # There is urgent data to read.
1721
gobject.IO_ERR: "ERR", # Error condition.
1722
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1723
# broken, usually for pipes and
1724
# sockets).
1725
}
1726
conditions_string = ' | '.join(name
1727
for cond, name in
1728
condition_names.iteritems()
1729
if cond & condition)
2687
1730
# error, or the other end of multiprocessing.Pipe has closed
2688
if condition & (GLib.IO_ERR | GLib.IO_HUP):
1731
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2689
1732
# Wait for other process to exit
2690
1733
proc.join()
2691
1734
return False
2692
1735
2693
1736
# Read a request from the child
2694
1737
request = parent_pipe.recv()
2695
1738
command = request[0]
2696
1739
2697
1740
if command == 'init':
2698
key_id = request[1].decode("ascii")
2699
fpr = request[2].decode("ascii")
2700
address = request[3]
2701
2702
for c in self.clients.values():
2703
if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2704
continue
2705
if key_id and c.key_id == key_id:
2706
client = c
2707
break
2708
if fpr and c.fingerprint == fpr:
1741
fpr = request[1]
1742
address = request[2]
1743
1744
for c in self.clients.itervalues():
1745
if c.fingerprint == fpr:
2709
1746
client = c
2710
1747
break
2711
1748
else:
2712
logger.info("Client not found for key ID: %s, address"
2713
": %s", key_id or fpr, address)
1749
logger.info("Client not found for fingerprint: %s, ad"
1750
"dress: %s", fpr, address)
2714
1751
if self.use_dbus:
2715
1752
# Emit D-Bus signal
2716
mandos_dbus_service.ClientNotFound(key_id or fpr,
1753
mandos_dbus_service.ClientNotFound(fpr,
2717
1754
address[0])
2718
1755
parent_pipe.send(False)
2719
1756
return False
2720
2721
GLib.io_add_watch(
2722
parent_pipe.fileno(),
2723
GLib.IO_IN | GLib.IO_HUP,
2724
functools.partial(self.handle_ipc,
2725
parent_pipe=parent_pipe,
2726
proc=proc,
2727
client_object=client))
1757
1758
gobject.io_add_watch(parent_pipe.fileno(),
1759
gobject.IO_IN | gobject.IO_HUP,
1760
functools.partial(self.handle_ipc,
1761
parent_pipe =
1762
parent_pipe,
1763
proc = proc,
1764
client_object =
1765
client))
2728
1766
parent_pipe.send(True)
2729
1767
# remove the old hook in favor of the new above hook on
2730
1768
# same fileno
2733
1771
funcname = request[1]
2734
1772
args = request[2]
2735
1773
kwargs = request[3]
2736
1774
2737
1775
parent_pipe.send(('data', getattr(client_object,
2738
1776
funcname)(*args,
2739
**kwargs)))
2740
1777
**kwargs)))
1778
2741
1779
if command == 'getattr':
2742
1780
attrname = request[1]
2743
if isinstance(client_object.__getattribute__(attrname),
2744
collections.Callable):
2745
parent_pipe.send(('function', ))
1781
if callable(client_object.__getattribute__(attrname)):
1782
parent_pipe.send(('function',))
2746
1783
else:
2747
parent_pipe.send((
2748
'data', client_object.__getattribute__(attrname)))
2749
1784
parent_pipe.send(('data', client_object
1785
.__getattribute__(attrname)))
1786
2750
1787
if command == 'setattr':
2751
1788
attrname = request[1]
2752
1789
value = request[2]
2753
1790
setattr(client_object, attrname, value)
2754
1791
2755
1792
return True
2756
1793
2757
1794
2758
def rfc3339_duration_to_delta(duration):
2759
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2760
2761
>>> rfc3339_duration_to_delta("P7D")
2762
datetime.timedelta(7)
2763
>>> rfc3339_duration_to_delta("PT60S")
2764
datetime.timedelta(0, 60)
2765
>>> rfc3339_duration_to_delta("PT60M")
2766
datetime.timedelta(0, 3600)
2767
>>> rfc3339_duration_to_delta("PT24H")
2768
datetime.timedelta(1)
2769
>>> rfc3339_duration_to_delta("P1W")
2770
datetime.timedelta(7)
2771
>>> rfc3339_duration_to_delta("PT5M30S")
2772
datetime.timedelta(0, 330)
2773
>>> rfc3339_duration_to_delta("P1DT3M20S")
2774
datetime.timedelta(1, 200)
2775
"""
2776
2777
# Parsing an RFC 3339 duration with regular expressions is not
2778
# possible - there would have to be multiple places for the same
2779
# values, like seconds. The current code, while more esoteric, is
2780
# cleaner without depending on a parsing library. If Python had a
2781
# built-in library for parsing we would use it, but we'd like to
2782
# avoid excessive use of external libraries.
2783
2784
# New type for defining tokens, syntax, and semantics all-in-one
2785
Token = collections.namedtuple("Token", (
2786
"regexp", # To match token; if "value" is not None, must have
2787
# a "group" containing digits
2788
"value", # datetime.timedelta or None
2789
"followers")) # Tokens valid after this token
2790
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2791
# the "duration" ABNF definition in RFC 3339, Appendix A.
2792
token_end = Token(re.compile(r"$"), None, frozenset())
2793
token_second = Token(re.compile(r"(\d+)S"),
2794
datetime.timedelta(seconds=1),
2795
frozenset((token_end, )))
2796
token_minute = Token(re.compile(r"(\d+)M"),
2797
datetime.timedelta(minutes=1),
2798
frozenset((token_second, token_end)))
2799
token_hour = Token(re.compile(r"(\d+)H"),
2800
datetime.timedelta(hours=1),
2801
frozenset((token_minute, token_end)))
2802
token_time = Token(re.compile(r"T"),
2803
None,
2804
frozenset((token_hour, token_minute,
2805
token_second)))
2806
token_day = Token(re.compile(r"(\d+)D"),
2807
datetime.timedelta(days=1),
2808
frozenset((token_time, token_end)))
2809
token_month = Token(re.compile(r"(\d+)M"),
2810
datetime.timedelta(weeks=4),
2811
frozenset((token_day, token_end)))
2812
token_year = Token(re.compile(r"(\d+)Y"),
2813
datetime.timedelta(weeks=52),
2814
frozenset((token_month, token_end)))
2815
token_week = Token(re.compile(r"(\d+)W"),
2816
datetime.timedelta(weeks=1),
2817
frozenset((token_end, )))
2818
token_duration = Token(re.compile(r"P"), None,
2819
frozenset((token_year, token_month,
2820
token_day, token_time,
2821
token_week)))
2822
# Define starting values:
2823
# Value so far
2824
value = datetime.timedelta()
2825
found_token = None
2826
# Following valid tokens
2827
followers = frozenset((token_duration, ))
2828
# String left to parse
2829
s = duration
2830
# Loop until end token is found
2831
while found_token is not token_end:
2832
# Search for any currently valid tokens
2833
for token in followers:
2834
match = token.regexp.match(s)
2835
if match is not None:
2836
# Token found
2837
if token.value is not None:
2838
# Value found, parse digits
2839
factor = int(match.group(1), 10)
2840
# Add to value so far
2841
value += factor * token.value
2842
# Strip token from string
2843
s = token.regexp.sub("", s, 1)
2844
# Go to found token
2845
found_token = token
2846
# Set valid next tokens
2847
followers = found_token.followers
2848
break
2849
else:
2850
# No currently valid tokens were found
2851
raise ValueError("Invalid RFC 3339 duration: {!r}"
2852
.format(duration))
2853
# End token found
2854
return value
2855
2856
2857
1795
def string_to_delta(interval):
2858
1796
"""Parse a string and return a datetime.timedelta
2859
1797
2860
1798
>>> string_to_delta('7d')
2861
1799
datetime.timedelta(7)
2862
1800
>>> string_to_delta('60s')
2870
1808
>>> string_to_delta('5m 30s')
2871
1809
datetime.timedelta(0, 330)
2872
1810
"""
2873
2874
try:
2875
return rfc3339_duration_to_delta(interval)
2876
except ValueError:
2877
pass
2878
2879
1811
timevalue = datetime.timedelta(0)
2880
1812
for s in interval.split():
2881
1813
try:
2882
suffix = s[-1]
1814
suffix = unicode(s[-1])
2883
1815
value = int(s[:-1])
2884
1816
if suffix == "d":
2885
1817
delta = datetime.timedelta(value)
2892
1824
elif suffix == "w":
2893
1825
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2894
1826
else:
2895
raise ValueError("Unknown suffix {!r}".format(suffix))
2896
except IndexError as e:
1827
raise ValueError("Unknown suffix %r" % suffix)
1828
except (ValueError, IndexError) as e:
2897
1829
raise ValueError(*(e.args))
2898
1830
timevalue += delta
2899
1831
return timevalue
2900
1832
2901
1833
2902
def daemon(nochdir=False, noclose=False):
1834
def if_nametoindex(interface):
1835
"""Call the C function if_nametoindex(), or equivalent
1836
1837
Note: This function cannot accept a unicode string."""
1838
global if_nametoindex
1839
try:
1840
if_nametoindex = (ctypes.cdll.LoadLibrary
1841
(ctypes.util.find_library("c"))
1842
.if_nametoindex)
1843
except (OSError, AttributeError):
1844
logger.warning("Doing if_nametoindex the hard way")
1845
def if_nametoindex(interface):
1846
"Get an interface index the hard way, i.e. using fcntl()"
1847
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1848
with contextlib.closing(socket.socket()) as s:
1849
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1850
struct.pack(str("16s16x"),
1851
interface))
1852
interface_index = struct.unpack(str("I"),
1853
ifreq[16:20])[0]
1854
return interface_index
1855
return if_nametoindex(interface)
1856
1857
1858
def daemon(nochdir = False, noclose = False):
2903
1859
"""See daemon(3). Standard BSD Unix function.
2904
1860
2905
1861
This should really exist as os.daemon, but it doesn't (yet)."""
2906
1862
if os.fork():
2907
1863
sys.exit()
2912
1868
sys.exit()
2913
1869
if not noclose:
2914
1870
# Close all standard open file descriptors
2915
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1871
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2916
1872
if not stat.S_ISCHR(os.fstat(null).st_mode):
2917
1873
raise OSError(errno.ENODEV,
2918
"{} not a character device"
2919
.format(os.devnull))
1874
"%s not a character device"
1875
% os.path.devnull)
2920
1876
os.dup2(null, sys.stdin.fileno())
2921
1877
os.dup2(null, sys.stdout.fileno())
2922
1878
os.dup2(null, sys.stderr.fileno())
2925
1881
2926
1882
2927
1883
def main():
2928
1884
2929
1885
##################################################################
2930
1886
# Parsing of options, both command line and config file
2931
1887
2932
1888
parser = argparse.ArgumentParser()
2933
1889
parser.add_argument("-v", "--version", action="version",
2934
version="%(prog)s {}".format(version),
1890
version = "%%(prog)s %s" % version,
2935
1891
help="show version number and exit")
2936
1892
parser.add_argument("-i", "--interface", metavar="IF",
2937
1893
help="Bind to interface IF")
2943
1899
help="Run self-test")
2944
1900
parser.add_argument("--debug", action="store_true",
2945
1901
help="Debug mode; run in foreground and log"
2946
" to terminal", default=None)
1902
" to terminal")
2947
1903
parser.add_argument("--debuglevel", metavar="LEVEL",
2948
1904
help="Debug level for stdout output")
2949
1905
parser.add_argument("--priority", help="GnuTLS"
2956
1912
" files")
2957
1913
parser.add_argument("--no-dbus", action="store_false",
2958
1914
dest="use_dbus", help="Do not provide D-Bus"
2959
" system bus interface", default=None)
1915
" system bus interface")
2960
1916
parser.add_argument("--no-ipv6", action="store_false",
2961
dest="use_ipv6", help="Do not use IPv6",
2962
default=None)
1917
dest="use_ipv6", help="Do not use IPv6")
2963
1918
parser.add_argument("--no-restore", action="store_false",
2964
dest="restore", help="Do not restore stored"
2965
" state", default=None)
2966
parser.add_argument("--socket", type=int,
2967
help="Specify a file descriptor to a network"
2968
" socket to use instead of creating one")
2969
parser.add_argument("--statedir", metavar="DIR",
2970
help="Directory to save/restore state in")
2971
parser.add_argument("--foreground", action="store_true",
2972
help="Run in foreground", default=None)
2973
parser.add_argument("--no-zeroconf", action="store_false",
2974
dest="zeroconf", help="Do not use Zeroconf",
2975
default=None)
1919
dest="restore", help="Do not restore old state",
1920
default=True)
2976
1921
2977
1922
options = parser.parse_args()
2978
1923
2979
1924
if options.check:
2980
1925
import doctest
2981
fail_count, test_count = doctest.testmod()
2982
sys.exit(os.EX_OK if fail_count == 0 else 1)
2983
1926
doctest.testmod()
1927
sys.exit()
1928
2984
1929
# Default values for config file for server-global settings
2985
if gnutls.has_rawpk:
2986
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
2987
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
2988
else:
2989
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2990
":+SIGN-DSA-SHA256")
2991
server_defaults = {"interface": "",
2992
"address": "",
2993
"port": "",
2994
"debug": "False",
2995
"priority": priority,
2996
"servicename": "Mandos",
2997
"use_dbus": "True",
2998
"use_ipv6": "True",
2999
"debuglevel": "",
3000
"restore": "True",
3001
"socket": "",
3002
"statedir": "/var/lib/mandos",
3003
"foreground": "False",
3004
"zeroconf": "True",
3005
}
3006
del priority
3007
1930
server_defaults = { "interface": "",
1931
"address": "",
1932
"port": "",
1933
"debug": "False",
1934
"priority":
1935
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1936
"servicename": "Mandos",
1937
"use_dbus": "True",
1938
"use_ipv6": "True",
1939
"debuglevel": "",
1940
}
1941
3008
1942
# Parse config file for server-global settings
3009
1943
server_config = configparser.SafeConfigParser(server_defaults)
3010
1944
del server_defaults
3011
server_config.read(os.path.join(options.configdir, "mandos.conf"))
1945
server_config.read(os.path.join(options.configdir,
1946
"mandos.conf"))
3012
1947
# Convert the SafeConfigParser object to a dict
3013
1948
server_settings = server_config.defaults()
3014
1949
# Use the appropriate methods on the non-string config options
3015
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3016
"foreground", "zeroconf"):
1950
for option in ("debug", "use_dbus", "use_ipv6"):
3017
1951
server_settings[option] = server_config.getboolean("DEFAULT",
3018
1952
option)
3019
1953
if server_settings["port"]:
3020
1954
server_settings["port"] = server_config.getint("DEFAULT",
3021
1955
"port")
3022
if server_settings["socket"]:
3023
server_settings["socket"] = server_config.getint("DEFAULT",
3024
"socket")
3025
# Later, stdin will, and stdout and stderr might, be dup'ed
3026
# over with an opened os.devnull. But we don't want this to
3027
# happen with a supplied network socket.
3028
if 0 <= server_settings["socket"] <= 2:
3029
server_settings["socket"] = os.dup(server_settings
3030
["socket"])
3031
1956
del server_config
3032
1957
3033
1958
# Override the settings from the config file with command line
3034
1959
# options, if set.
3035
1960
for option in ("interface", "address", "port", "debug",
3036
"priority", "servicename", "configdir", "use_dbus",
3037
"use_ipv6", "debuglevel", "restore", "statedir",
3038
"socket", "foreground", "zeroconf"):
1961
"priority", "servicename", "configdir",
1962
"use_dbus", "use_ipv6", "debuglevel", "restore"):
3039
1963
value = getattr(options, option)
3040
1964
if value is not None:
3041
1965
server_settings[option] = value
3042
1966
del options
3043
1967
# Force all strings to be unicode
3044
1968
for option in server_settings.keys():
3045
if isinstance(server_settings[option], bytes):
3046
server_settings[option] = (server_settings[option]
3047
.decode("utf-8"))
3048
# Force all boolean options to be boolean
3049
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3050
"foreground", "zeroconf"):
3051
server_settings[option] = bool(server_settings[option])
3052
# Debug implies foreground
3053
if server_settings["debug"]:
3054
server_settings["foreground"] = True
1969
if type(server_settings[option]) is str:
1970
server_settings[option] = unicode(server_settings[option])
3055
1971
# Now we have our good server settings in "server_settings"
3056
1972
3057
1973
##################################################################
3058
3059
if (not server_settings["zeroconf"]
3060
and not (server_settings["port"]
3061
or server_settings["socket"] != "")):
3062
parser.error("Needs port or socket to work without Zeroconf")
3063
1974
3064
1975
# For convenience
3065
1976
debug = server_settings["debug"]
3066
1977
debuglevel = server_settings["debuglevel"]
3067
1978
use_dbus = server_settings["use_dbus"]
3068
1979
use_ipv6 = server_settings["use_ipv6"]
3069
stored_state_path = os.path.join(server_settings["statedir"],
3070
stored_state_file)
3071
foreground = server_settings["foreground"]
3072
zeroconf = server_settings["zeroconf"]
3073
3074
if debug:
3075
initlogger(debug, logging.DEBUG)
3076
else:
3077
if not debuglevel:
3078
initlogger(debug)
3079
else:
3080
level = getattr(logging, debuglevel.upper())
3081
initlogger(debug, level)
3082
1980
3083
1981
if server_settings["servicename"] != "Mandos":
3084
syslogger.setFormatter(
3085
logging.Formatter('Mandos ({}) [%(process)d]:'
3086
' %(levelname)s: %(message)s'.format(
3087
server_settings["servicename"])))
3088
1982
syslogger.setFormatter(logging.Formatter
1983
('Mandos (%s) [%%(process)d]:'
1984
' %%(levelname)s: %%(message)s'
1985
% server_settings["servicename"]))
1986
3089
1987
# Parse config file with clients
3090
client_config = configparser.SafeConfigParser(Client
3091
.client_defaults)
1988
client_defaults = { "timeout": "5m",
1989
"extended_timeout": "15m",
1990
"interval": "2m",
1991
"checker": "fping -q -- %%(host)s",
1992
"host": "",
1993
"approval_delay": "0s",
1994
"approval_duration": "1s",
1995
}
1996
client_config = configparser.SafeConfigParser(client_defaults)
3092
1997
client_config.read(os.path.join(server_settings["configdir"],
3093
1998
"clients.conf"))
3094
1999
3095
2000
global mandos_dbus_service
3096
2001
mandos_dbus_service = None
3097
3098
socketfd = None
3099
if server_settings["socket"] != "":
3100
socketfd = server_settings["socket"]
3101
tcp_server = MandosServer(
3102
(server_settings["address"], server_settings["port"]),
3103
ClientHandler,
3104
interface=(server_settings["interface"] or None),
3105
use_ipv6=use_ipv6,
3106
gnutls_priority=server_settings["priority"],
3107
use_dbus=use_dbus,
3108
socketfd=socketfd)
3109
if not foreground:
3110
pidfilename = "/run/mandos.pid"
3111
if not os.path.isdir("/run/."):
3112
pidfilename = "/var/run/mandos.pid"
3113
pidfile = None
3114
try:
3115
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3116
except IOError as e:
3117
logger.error("Could not open file %r", pidfilename,
3118
exc_info=e)
3119
3120
for name, group in (("_mandos", "_mandos"),
3121
("mandos", "mandos"),
3122
("nobody", "nogroup")):
3123
try:
3124
uid = pwd.getpwnam(name).pw_uid
3125
gid = pwd.getpwnam(group).pw_gid
3126
break
2002
2003
tcp_server = MandosServer((server_settings["address"],
2004
server_settings["port"]),
2005
ClientHandler,
2006
interface=(server_settings["interface"]
2007
or None),
2008
use_ipv6=use_ipv6,
2009
gnutls_priority=
2010
server_settings["priority"],
2011
use_dbus=use_dbus)
2012
if not debug:
2013
pidfilename = "/var/run/mandos.pid"
2014
try:
2015
pidfile = open(pidfilename, "w")
2016
except IOError:
2017
logger.error("Could not open file %r", pidfilename)
2018
2019
try:
2020
uid = pwd.getpwnam("_mandos").pw_uid
2021
gid = pwd.getpwnam("_mandos").pw_gid
2022
except KeyError:
2023
try:
2024
uid = pwd.getpwnam("mandos").pw_uid
2025
gid = pwd.getpwnam("mandos").pw_gid
3127
2026
except KeyError:
3128
continue
3129
else:
3130
uid = 65534
3131
gid = 65534
2027
try:
2028
uid = pwd.getpwnam("nobody").pw_uid
2029
gid = pwd.getpwnam("nobody").pw_gid
2030
except KeyError:
2031
uid = 65534
2032
gid = 65534
3132
2033
try:
3133
2034
os.setgid(gid)
3134
2035
os.setuid(uid)
3135
if debug:
3136
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3137
gid))
3138
2036
except OSError as error:
3139
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3140
.format(uid, gid, os.strerror(error.errno)))
3141
if error.errno != errno.EPERM:
3142
raise
3143
2037
if error[0] != errno.EPERM:
2038
raise error
2039
2040
if not debug and not debuglevel:
2041
syslogger.setLevel(logging.WARNING)
2042
console.setLevel(logging.WARNING)
2043
if debuglevel:
2044
level = getattr(logging, debuglevel.upper())
2045
syslogger.setLevel(level)
2046
console.setLevel(level)
2047
3144
2048
if debug:
3145
2049
# Enable all possible GnuTLS debugging
3146
2050
3147
2051
# "Use a log level over 10 to enable all debugging options."
3148
2052
# - GnuTLS manual
3149
gnutls.global_set_log_level(11)
3150
3151
@gnutls.log_func
2053
gnutls.library.functions.gnutls_global_set_log_level(11)
2054
2055
@gnutls.library.types.gnutls_log_func
3152
2056
def debug_gnutls(level, string):
3153
2057
logger.debug("GnuTLS: %s", string[:-1])
3154
3155
gnutls.global_set_log_function(debug_gnutls)
3156
2058
2059
(gnutls.library.functions
2060
.gnutls_global_set_log_function(debug_gnutls))
2061
3157
2062
# Redirect stdin so all checkers get /dev/null
3158
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2063
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3159
2064
os.dup2(null, sys.stdin.fileno())
3160
2065
if null > 2:
3161
2066
os.close(null)
3162
2067
else:
2068
# No console logging
2069
logger.removeHandler(console)
2070
3163
2071
# Need to fork before connecting to D-Bus
3164
if not foreground:
2072
if not debug:
3165
2073
# Close all input and output, do double fork, etc.
3166
2074
daemon()
3167
3168
# multiprocessing will use threads, so before we use GLib we need
3169
# to inform GLib that threads will be used.
3170
GLib.threads_init()
3171
2075
3172
2076
global main_loop
3173
2077
# From the Avahi example code
3174
DBusGMainLoop(set_as_default=True)
3175
main_loop = GLib.MainLoop()
2078
DBusGMainLoop(set_as_default=True )
2079
main_loop = gobject.MainLoop()
3176
2080
bus = dbus.SystemBus()
3177
2081
# End of Avahi example code
3178
2082
if use_dbus:
3179
2083
try:
3180
2084
bus_name = dbus.service.BusName("se.recompile.Mandos",
3181
bus,
3182
do_not_queue=True)
3183
old_bus_name = dbus.service.BusName(
3184
"se.bsnet.fukt.Mandos", bus,
3185
do_not_queue=True)
3186
except dbus.exceptions.DBusException as e:
3187
logger.error("Disabling D-Bus:", exc_info=e)
2085
bus, do_not_queue=True)
2086
old_bus_name = (dbus.service.BusName
2087
("se.bsnet.fukt.Mandos", bus,
2088
do_not_queue=True))
2089
except dbus.exceptions.NameExistsException as e:
2090
logger.error(unicode(e) + ", disabling D-Bus")
3188
2091
use_dbus = False
3189
2092
server_settings["use_dbus"] = False
3190
2093
tcp_server.use_dbus = False
3191
if zeroconf:
3192
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3193
service = AvahiServiceToSyslog(
3194
name=server_settings["servicename"],
3195
servicetype="_mandos._tcp",
3196
protocol=protocol,
3197
bus=bus)
3198
if server_settings["interface"]:
3199
service.interface = if_nametoindex(
3200
server_settings["interface"].encode("utf-8"))
3201
2094
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2095
service = AvahiService(name = server_settings["servicename"],
2096
servicetype = "_mandos._tcp",
2097
protocol = protocol, bus = bus)
2098
if server_settings["interface"]:
2099
service.interface = (if_nametoindex
2100
(str(server_settings["interface"])))
2101
3202
2102
global multiprocessing_manager
3203
2103
multiprocessing_manager = multiprocessing.Manager()
3204
2104
3205
2105
client_class = Client
3206
2106
if use_dbus:
3207
client_class = functools.partial(ClientDBus, bus=bus)
3208
3209
client_settings = Client.config_parser(client_config)
2107
client_class = functools.partial(ClientDBusTransitional,
2108
bus = bus)
2109
2110
special_settings = {
2111
# Some settings need to be accessd by special methods;
2112
# booleans need .getboolean(), etc. Here is a list of them:
2113
"approved_by_default":
2114
lambda section:
2115
client_config.getboolean(section, "approved_by_default"),
2116
}
2117
# Construct a new dict of client settings of this form:
2118
# { client_name: {setting_name: value, ...}, ...}
2119
# with exceptions for any special settings as defined above
2120
client_settings = dict((clientname,
2121
dict((setting,
2122
(value if setting not in special_settings
2123
else special_settings[setting](clientname)))
2124
for setting, value in client_config.items(clientname)))
2125
for clientname in client_config.sections())
2126
3210
2127
old_client_settings = {}
3211
clients_data = {}
3212
3213
# This is used to redirect stdout and stderr for checker processes
3214
global wnull
3215
wnull = open(os.devnull, "w") # A writable /dev/null
3216
# Only used if server is running in foreground but not in debug
3217
# mode
3218
if debug or not foreground:
3219
wnull.close()
3220
3221
# Get client data and settings from last running state.
2128
clients_data = []
2129
3222
2130
if server_settings["restore"]:
3223
2131
try:
3224
2132
with open(stored_state_path, "rb") as stored_state:
3225
if sys.version_info.major == 2:
3226
clients_data, old_client_settings = pickle.load(
3227
stored_state)
3228
else:
3229
bytes_clients_data, bytes_old_client_settings = (
3230
pickle.load(stored_state, encoding="bytes"))
3231
# Fix bytes to strings
3232
# clients_data
3233
# .keys()
3234
clients_data = {(key.decode("utf-8")
3235
if isinstance(key, bytes)
3236
else key): value
3237
for key, value in
3238
bytes_clients_data.items()}
3239
del bytes_clients_data
3240
for key in clients_data:
3241
value = {(k.decode("utf-8")
3242
if isinstance(k, bytes) else k): v
3243
for k, v in
3244
clients_data[key].items()}
3245
clients_data[key] = value
3246
# .client_structure
3247
value["client_structure"] = [
3248
(s.decode("utf-8")
3249
if isinstance(s, bytes)
3250
else s) for s in
3251
value["client_structure"]]
3252
# .name & .host
3253
for k in ("name", "host"):
3254
if isinstance(value[k], bytes):
3255
value[k] = value[k].decode("utf-8")
3256
if not value.has_key("key_id"):
3257
value["key_id"] = ""
3258
elif not value.has_key("fingerprint"):
3259
value["fingerprint"] = ""
3260
# old_client_settings
3261
# .keys()
3262
old_client_settings = {
3263
(key.decode("utf-8")
3264
if isinstance(key, bytes)
3265
else key): value
3266
for key, value in
3267
bytes_old_client_settings.items()}
3268
del bytes_old_client_settings
3269
# .host
3270
for value in old_client_settings.values():
3271
if isinstance(value["host"], bytes):
3272
value["host"] = (value["host"]
3273
.decode("utf-8"))
2133
clients_data, old_client_settings = pickle.load(stored_state)
3274
2134
os.remove(stored_state_path)
3275
2135
except IOError as e:
3276
if e.errno == errno.ENOENT:
3277
logger.warning("Could not load persistent state:"
3278
" {}".format(os.strerror(e.errno)))
3279
else:
3280
logger.critical("Could not load persistent state:",
3281
exc_info=e)
2136
logger.warning("Could not load persistant state: {0}".format(e))
2137
if e.errno != errno.ENOENT:
3282
2138
raise
3283
except EOFError as e:
3284
logger.warning("Could not load persistent state: "
3285
"EOFError:",
3286
exc_info=e)
3287
3288
with PGPEngine() as pgp:
3289
for client_name, client in clients_data.items():
3290
# Skip removed clients
3291
if client_name not in client_settings:
3292
continue
3293
3294
# Decide which value to use after restoring saved state.
3295
# We have three different values: Old config file,
3296
# new config file, and saved state.
3297
# New config value takes precedence if it differs from old
3298
# config value, otherwise use saved state.
3299
for name, value in client_settings[client_name].items():
3300
try:
3301
# For each value in new config, check if it
3302
# differs from the old config value (Except for
3303
# the "secret" attribute)
3304
if (name != "secret"
3305
and (value !=
3306
old_client_settings[client_name][name])):
3307
client[name] = value
3308
except KeyError:
3309
pass
3310
3311
# Clients who has passed its expire date can still be
3312
# enabled if its last checker was successful. A Client
3313
# whose checker succeeded before we stored its state is
3314
# assumed to have successfully run all checkers during
3315
# downtime.
3316
if client["enabled"]:
3317
if datetime.datetime.utcnow() >= client["expires"]:
3318
if not client["last_checked_ok"]:
3319
logger.warning(
3320
"disabling client {} - Client never "
3321
"performed a successful checker".format(
3322
client_name))
3323
client["enabled"] = False
3324
elif client["last_checker_status"] != 0:
3325
logger.warning(
3326
"disabling client {} - Client last"
3327
" checker failed with error code"
3328
" {}".format(
3329
client_name,
3330
client["last_checker_status"]))
3331
client["enabled"] = False
3332
else:
3333
client["expires"] = (
3334
datetime.datetime.utcnow()
3335
+ client["timeout"])
3336
logger.debug("Last checker succeeded,"
3337
" keeping {} enabled".format(
3338
client_name))
2139
2140
for client in clients_data:
2141
client_name = client["name"]
2142
2143
# Decide which value to use after restoring saved state.
2144
# We have three different values: Old config file,
2145
# new config file, and saved state.
2146
# New config value takes precedence if it differs from old
2147
# config value, otherwise use saved state.
2148
for name, value in client_settings[client_name].items():
3339
2149
try:
3340
client["secret"] = pgp.decrypt(
3341
client["encrypted_secret"],
3342
client_settings[client_name]["secret"])
3343
except PGPError:
3344
# If decryption fails, we use secret from new settings
3345
logger.debug("Failed to decrypt {} old secret".format(
3346
client_name))
3347
client["secret"] = (client_settings[client_name]
3348
["secret"])
3349
3350
# Add/remove clients based on new changes made to config
3351
for client_name in (set(old_client_settings)
3352
- set(client_settings)):
3353
del clients_data[client_name]
3354
for client_name in (set(client_settings)
3355
- set(old_client_settings)):
3356
clients_data[client_name] = client_settings[client_name]
3357
3358
# Create all client objects
3359
for client_name, client in clients_data.items():
3360
tcp_server.clients[client_name] = client_class(
3361
name=client_name,
3362
settings=client,
3363
server_settings=server_settings)
2150
# For each value in new config, check if it differs
2151
# from the old config value (Except for the "secret"
2152
# attribute)
2153
if name != "secret" and value != old_client_settings[client_name][name]:
2154
setattr(client, name, value)
2155
except KeyError:
2156
pass
2157
2158
# Clients who has passed its expire date, can still be enabled if its
2159
# last checker was sucessful. Clients who checkers failed before we
2160
# stored it state is asumed to had failed checker during downtime.
2161
if client["enabled"] and client["last_checked_ok"]:
2162
if ((datetime.datetime.utcnow() - client["last_checked_ok"])
2163
> client["interval"]):
2164
if client["last_checker_status"] != 0:
2165
client["enabled"] = False
2166
else:
2167
client["expires"] = datetime.datetime.utcnow() + client["timeout"]
2168
2169
client["changedstate"] = (multiprocessing_manager
2170
.Condition(multiprocessing_manager
2171
.Lock()))
2172
if use_dbus:
2173
new_client = ClientDBusTransitional.__new__(ClientDBusTransitional)
2174
tcp_server.clients[client_name] = new_client
2175
new_client.bus = bus
2176
for name, value in client.iteritems():
2177
setattr(new_client, name, value)
2178
client_object_name = unicode(client_name).translate(
2179
{ord("."): ord("_"),
2180
ord("-"): ord("_")})
2181
new_client.dbus_object_path = (dbus.ObjectPath
2182
("/clients/" + client_object_name))
2183
DBusObjectWithProperties.__init__(new_client,
2184
new_client.bus,
2185
new_client.dbus_object_path)
2186
else:
2187
tcp_server.clients[client_name] = Client.__new__(Client)
2188
for name, value in client.iteritems():
2189
setattr(tcp_server.clients[client_name], name, value)
2190
2191
tcp_server.clients[client_name].decrypt_secret(
2192
client_settings[client_name]["secret"])
2193
2194
# Create/remove clients based on new changes made to config
2195
for clientname in set(old_client_settings) - set(client_settings):
2196
del tcp_server.clients[clientname]
2197
for clientname in set(client_settings) - set(old_client_settings):
2198
tcp_server.clients[clientname] = (client_class(name = clientname,
2199
config =
2200
client_settings
2201
[clientname]))
2202
3364
2203
3365
2204
if not tcp_server.clients:
3366
2205
logger.warning("No clients defined")
3367
3368
if not foreground:
3369
if pidfile is not None:
3370
pid = os.getpid()
3371
try:
3372
with pidfile:
3373
print(pid, file=pidfile)
3374
except IOError:
3375
logger.error("Could not write to file %r with PID %d",
3376
pidfilename, pid)
3377
del pidfile
2206
2207
if not debug:
2208
try:
2209
with pidfile:
2210
pid = os.getpid()
2211
pidfile.write(str(pid) + "\n".encode("utf-8"))
2212
del pidfile
2213
except IOError:
2214
logger.error("Could not write to file %r with PID %d",
2215
pidfilename, pid)
2216
except NameError:
2217
# "pidfile" was never created
2218
pass
3378
2219
del pidfilename
3379
3380
for termsig in (signal.SIGHUP, signal.SIGTERM):
3381
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3382
lambda: main_loop.quit() and False)
3383
2220
2221
signal.signal(signal.SIGINT, signal.SIG_IGN)
2222
2223
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2224
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2225
3384
2226
if use_dbus:
3385
3386
@alternate_dbus_interfaces(
3387
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3388
class MandosDBusService(DBusObjectWithObjectManager):
2227
class MandosDBusService(dbus.service.Object):
3389
2228
"""A D-Bus proxy object"""
3390
3391
2229
def __init__(self):
3392
2230
dbus.service.Object.__init__(self, bus, "/")
3393
3394
2231
_interface = "se.recompile.Mandos"
3395
2232
3396
2233
@dbus.service.signal(_interface, signature="o")
3397
2234
def ClientAdded(self, objpath):
3398
2235
"D-Bus signal"
3399
2236
pass
3400
2237
3401
2238
@dbus.service.signal(_interface, signature="ss")
3402
def ClientNotFound(self, key_id, address):
2239
def ClientNotFound(self, fingerprint, address):
3403
2240
"D-Bus signal"
3404
2241
pass
3405
3406
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3407
"true"})
2242
3408
2243
@dbus.service.signal(_interface, signature="os")
3409
2244
def ClientRemoved(self, objpath, name):
3410
2245
"D-Bus signal"
3411
2246
pass
3412
3413
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3414
"true"})
2247
3415
2248
@dbus.service.method(_interface, out_signature="ao")
3416
2249
def GetAllClients(self):
3417
2250
"D-Bus method"
3418
return dbus.Array(c.dbus_object_path for c in
3419
tcp_server.clients.values())
3420
3421
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3422
"true"})
2251
return dbus.Array(c.dbus_object_path
2252
for c in
2253
tcp_server.clients.itervalues())
2254
3423
2255
@dbus.service.method(_interface,
3424
2256
out_signature="a{oa{sv}}")
3425
2257
def GetAllClientsWithProperties(self):
3426
2258
"D-Bus method"
3427
2259
return dbus.Dictionary(
3428
{c.dbus_object_path: c.GetAll(
3429
"se.recompile.Mandos.Client")
3430
for c in tcp_server.clients.values()},
2260
((c.dbus_object_path, c.GetAll(""))
2261
for c in tcp_server.clients.itervalues()),
3431
2262
signature="oa{sv}")
3432
2263
3433
2264
@dbus.service.method(_interface, in_signature="o")
3434
2265
def RemoveClient(self, object_path):
3435
2266
"D-Bus method"
3436
for c in tcp_server.clients.values():
2267
for c in tcp_server.clients.itervalues():
3437
2268
if c.dbus_object_path == object_path:
3438
2269
del tcp_server.clients[c.name]
3439
2270
c.remove_from_connection()
3440
# Don't signal the disabling
2271
# Don't signal anything except ClientRemoved
3441
2272
c.disable(quiet=True)
3442
# Emit D-Bus signal for removal
3443
self.client_removed_signal(c)
2273
# Emit D-Bus signal
2274
self.ClientRemoved(object_path, c.name)
3444
2275
return
3445
2276
raise KeyError(object_path)
3446
2277
3447
2278
del _interface
3448
3449
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3450
out_signature="a{oa{sa{sv}}}")
3451
def GetManagedObjects(self):
3452
"""D-Bus method"""
3453
return dbus.Dictionary(
3454
{client.dbus_object_path:
3455
dbus.Dictionary(
3456
{interface: client.GetAll(interface)
3457
for interface in
3458
client._get_all_interface_names()})
3459
for client in tcp_server.clients.values()})
3460
3461
def client_added_signal(self, client):
3462
"""Send the new standard signal and the old signal"""
3463
if use_dbus:
3464
# New standard signal
3465
self.InterfacesAdded(
3466
client.dbus_object_path,
3467
dbus.Dictionary(
3468
{interface: client.GetAll(interface)
3469
for interface in
3470
client._get_all_interface_names()}))
3471
# Old signal
3472
self.ClientAdded(client.dbus_object_path)
3473
3474
def client_removed_signal(self, client):
3475
"""Send the new standard signal and the old signal"""
3476
if use_dbus:
3477
# New standard signal
3478
self.InterfacesRemoved(
3479
client.dbus_object_path,
3480
client._get_all_interface_names())
3481
# Old signal
3482
self.ClientRemoved(client.dbus_object_path,
3483
client.name)
3484
3485
mandos_dbus_service = MandosDBusService()
3486
3487
# Save modules to variables to exempt the modules from being
3488
# unloaded before the function registered with atexit() is run.
3489
mp = multiprocessing
3490
wn = wnull
3491
2279
2280
class MandosDBusServiceTransitional(MandosDBusService):
2281
__metaclass__ = AlternateDBusNamesMetaclass
2282
mandos_dbus_service = MandosDBusServiceTransitional()
2283
3492
2284
def cleanup():
3493
2285
"Cleanup function; run on exit"
3494
if zeroconf:
3495
service.cleanup()
3496
3497
mp.active_children()
3498
wn.close()
2286
service.cleanup()
2287
2288
multiprocessing.active_children()
3499
2289
if not (tcp_server.clients or client_settings):
3500
2290
return
3501
2291
3502
# Store client before exiting. Secrets are encrypted with key
3503
# based on what config file has. If config file is
3504
# removed/edited, old secret will thus be unrecovable.
3505
clients = {}
3506
with PGPEngine() as pgp:
3507
for client in tcp_server.clients.values():
3508
key = client_settings[client.name]["secret"]
3509
client.encrypted_secret = pgp.encrypt(client.secret,
3510
key)
3511
client_dict = {}
3512
3513
# A list of attributes that can not be pickled
3514
# + secret.
3515
exclude = {"bus", "changedstate", "secret",
3516
"checker", "server_settings"}
3517
for name, typ in inspect.getmembers(dbus.service
3518
.Object):
3519
exclude.add(name)
3520
3521
client_dict["encrypted_secret"] = (client
3522
.encrypted_secret)
3523
for attr in client.client_structure:
3524
if attr not in exclude:
3525
client_dict[attr] = getattr(client, attr)
3526
3527
clients[client.name] = client_dict
3528
del client_settings[client.name]["secret"]
3529
2292
# Store client before exiting. Secrets are encrypted with key based
2293
# on what config file has. If config file is removed/edited, old
2294
# secret will thus be unrecovable.
2295
clients = []
2296
for client in tcp_server.clients.itervalues():
2297
client.encrypt_secret(client_settings[client.name]["secret"])
2298
2299
client_dict = {}
2300
2301
# A list of attributes that will not be stored when shuting down.
2302
exclude = set(("bus", "changedstate", "secret"))
2303
for name, typ in inspect.getmembers(dbus.service.Object):
2304
exclude.add(name)
2305
2306
client_dict["encrypted_secret"] = client.encrypted_secret
2307
for attr in client.client_structure:
2308
if attr not in exclude:
2309
client_dict[attr] = getattr(client, attr)
2310
2311
clients.append(client_dict)
2312
del client_settings[client.name]["secret"]
2313
3530
2314
try:
3531
with tempfile.NamedTemporaryFile(
3532
mode='wb',
3533
suffix=".pickle",
3534
prefix='clients-',
3535
dir=os.path.dirname(stored_state_path),
3536
delete=False) as stored_state:
3537
pickle.dump((clients, client_settings), stored_state,
3538
protocol=2)
3539
tempname = stored_state.name
3540
os.rename(tempname, stored_state_path)
3541
except (IOError, OSError) as e:
3542
if not debug:
3543
try:
3544
os.remove(tempname)
3545
except NameError:
3546
pass
3547
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3548
logger.warning("Could not save persistent state: {}"
3549
.format(os.strerror(e.errno)))
3550
else:
3551
logger.warning("Could not save persistent state:",
3552
exc_info=e)
2315
with os.fdopen(os.open(stored_state_path, os.O_CREAT|os.O_WRONLY|os.O_TRUNC, 0600), "wb") as stored_state:
2316
pickle.dump((clients, client_settings), stored_state)
2317
except IOError as e:
2318
logger.warning("Could not save persistant state: {0}".format(e))
2319
if e.errno != errno.ENOENT:
3553
2320
raise
3554
2321
3555
2322
# Delete all clients, and settings from config
3557
2324
name, client = tcp_server.clients.popitem()
3558
2325
if use_dbus:
3559
2326
client.remove_from_connection()
3560
# Don't signal the disabling
2327
# Don't signal anything except ClientRemoved
3561
2328
client.disable(quiet=True)
3562
# Emit D-Bus signal for removal
3563
2329
if use_dbus:
3564
mandos_dbus_service.client_removed_signal(client)
2330
# Emit D-Bus signal
2331
mandos_dbus_service.ClientRemoved(client
2332
.dbus_object_path,
2333
client.name)
3565
2334
client_settings.clear()
3566
2335
3567
2336
atexit.register(cleanup)
3568
3569
for client in tcp_server.clients.values():
2337
2338
for client in tcp_server.clients.itervalues():
3570
2339
if use_dbus:
3571
# Emit D-Bus signal for adding
3572
mandos_dbus_service.client_added_signal(client)
2340
# Emit D-Bus signal
2341
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3573
2342
# Need to initiate checking of clients
3574
2343
if client.enabled:
3575
2344
client.init_checker()
3576
2345
2346
3577
2347
tcp_server.enable()
3578
2348
tcp_server.server_activate()
3579
2349
3580
2350
# Find out what port we got
3581
if zeroconf:
3582
service.port = tcp_server.socket.getsockname()[1]
2351
service.port = tcp_server.socket.getsockname()[1]
3583
2352
if use_ipv6:
3584
2353
logger.info("Now listening on address %r, port %d,"
3585
" flowinfo %d, scope_id %d",
3586
*tcp_server.socket.getsockname())
2354
" flowinfo %d, scope_id %d"
2355
% tcp_server.socket.getsockname())
3587
2356
else: # IPv4
3588
logger.info("Now listening on address %r, port %d",
3589
*tcp_server.socket.getsockname())
3590
3591
# service.interface = tcp_server.socket.getsockname()[3]
3592
2357
logger.info("Now listening on address %r, port %d"
2358
% tcp_server.socket.getsockname())
2359
2360
#service.interface = tcp_server.socket.getsockname()[3]
2361
3593
2362
try:
3594
if zeroconf:
3595
# From the Avahi example code
3596
try:
3597
service.activate()
3598
except dbus.exceptions.DBusException as error:
3599
logger.critical("D-Bus Exception", exc_info=error)
3600
cleanup()
3601
sys.exit(1)
3602
# End of Avahi example code
3603
3604
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3605
lambda *args, **kwargs:
3606
(tcp_server.handle_request
3607
(*args[2:], **kwargs) or True))
3608
2363
# From the Avahi example code
2364
try:
2365
service.activate()
2366
except dbus.exceptions.DBusException as error:
2367
logger.critical("DBusException: %s", error)
2368
cleanup()
2369
sys.exit(1)
2370
# End of Avahi example code
2371
2372
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2373
lambda *args, **kwargs:
2374
(tcp_server.handle_request
2375
(*args[2:], **kwargs) or True))
2376
3609
2377
logger.debug("Starting main loop")
3610
2378
main_loop.run()
3611
2379
except AvahiError as error:
3612
logger.critical("Avahi Error", exc_info=error)
2380
logger.critical("AvahiError: %s", error)
3613
2381
cleanup()
3614
2382
sys.exit(1)
3615
2383
except KeyboardInterrupt:
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0