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- Committer: teddy at bsnet
- Date: 2011-11-12 18:14:55 UTC
- mto: This revision was merged to the branch mainline in revision 522.
- Revision ID: teddy@fukt.bsnet.se-20111112181455-8m6z4qrrib33bl2c
* plugins.d/mandos-client.c (SYNOPSIS, OPTIONS): Document
"--network-hook-dir"
option.
"--network-hook-dir"
option.
- 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"
85
SO_BINDTODEVICE = None
86
87
88
version = "1.4.1"
120
89
121
90
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
IF_UNSPEC = -1 # avahi-common/address.h
281
PROTO_UNSPEC = -1 # avahi-common/address.h
282
PROTO_INET = 0 # avahi-common/address.h
283
PROTO_INET6 = 1 # avahi-common/address.h
284
DBUS_NAME = "org.freedesktop.Avahi"
285
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
286
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
287
DBUS_PATH_SERVER = "/"
288
289
@staticmethod
290
def string_array_to_txt_array(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
91
stored_state_path = "/var/lib/mandos/clients.pickle"
92
93
syslogger = (logging.handlers.SysLogHandler
94
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
95
address = str("/dev/log")))
96
syslogger.setFormatter(logging.Formatter
97
('Mandos [%(process)d]: %(levelname)s:'
98
' %(message)s'))
99
logger.addHandler(syslogger)
100
101
console = logging.StreamHandler()
102
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
103
' [%(process)d]:'
104
' %(levelname)s:'
105
' %(message)s'))
106
logger.addHandler(console)
301
107
302
108
303
109
class AvahiError(Exception):
304
110
def __init__(self, value, *args, **kwargs):
305
111
self.value = value
306
return super(AvahiError, self).__init__(value, *args,
307
**kwargs)
308
112
super(AvahiError, self).__init__(value, *args, **kwargs)
113
def __unicode__(self):
114
return unicode(repr(self.value))
309
115
310
116
class AvahiServiceError(AvahiError):
311
117
pass
312
118
313
314
119
class AvahiGroupError(AvahiError):
315
120
pass
316
121
317
122
318
123
class AvahiService(object):
319
124
"""An Avahi (Zeroconf) service.
320
125
321
126
Attributes:
322
127
interface: integer; avahi.IF_UNSPEC or an interface index.
323
128
Used to optionally bind to the specified interface.
324
129
name: string; Example: 'Mandos'
325
130
type: string; Example: '_mandos._tcp'.
326
See <https://www.iana.org/assignments/service-names-port-numbers>
131
See <http://www.dns-sd.org/ServiceTypes.html>
327
132
port: integer; what port to announce
328
133
TXT: list of strings; TXT record for the service
329
134
domain: string; Domain to publish on, default to .local if empty.
335
140
server: D-Bus Server
336
141
bus: dbus.SystemBus()
337
142
"""
338
339
def __init__(self,
340
interface=avahi.IF_UNSPEC,
341
name=None,
342
servicetype=None,
343
port=None,
344
TXT=None,
345
domain="",
346
host="",
347
max_renames=32768,
348
protocol=avahi.PROTO_UNSPEC,
349
bus=None):
143
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
144
servicetype = None, port = None, TXT = None,
145
domain = "", host = "", max_renames = 32768,
146
protocol = avahi.PROTO_UNSPEC, bus = None):
350
147
self.interface = interface
351
148
self.name = name
352
149
self.type = servicetype
361
158
self.server = None
362
159
self.bus = bus
363
160
self.entry_group_state_changed_match = None
364
365
def rename(self, remove=True):
161
def rename(self):
366
162
"""Derived from the Avahi example code"""
367
163
if self.rename_count >= self.max_renames:
368
164
logger.critical("No suitable Zeroconf service name found"
369
165
" after %i retries, exiting.",
370
166
self.rename_count)
371
167
raise AvahiServiceError("Too many renames")
372
self.name = str(
373
self.server.GetAlternativeServiceName(self.name))
374
self.rename_count += 1
168
self.name = unicode(self.server
169
.GetAlternativeServiceName(self.name))
375
170
logger.info("Changing Zeroconf service name to %r ...",
376
171
self.name)
377
if remove:
378
self.remove()
172
self.remove()
379
173
try:
380
174
self.add()
381
175
except dbus.exceptions.DBusException as error:
382
if (error.get_dbus_name()
383
== "org.freedesktop.Avahi.CollisionError"):
384
logger.info("Local Zeroconf service name collision.")
385
return self.rename(remove=False)
386
else:
387
logger.critical("D-Bus Exception", exc_info=error)
388
self.cleanup()
389
os._exit(1)
390
176
logger.critical("DBusException: %s", error)
177
self.cleanup()
178
os._exit(1)
179
self.rename_count += 1
391
180
def remove(self):
392
181
"""Derived from the Avahi example code"""
393
182
if self.entry_group_state_changed_match is not None:
395
184
self.entry_group_state_changed_match = None
396
185
if self.group is not None:
397
186
self.group.Reset()
398
399
187
def add(self):
400
188
"""Derived from the Avahi example code"""
401
189
self.remove()
418
206
dbus.UInt16(self.port),
419
207
avahi.string_array_to_txt_array(self.TXT))
420
208
self.group.Commit()
421
422
209
def entry_group_state_changed(self, state, error):
423
210
"""Derived from the Avahi example code"""
424
211
logger.debug("Avahi entry group state change: %i", state)
425
212
426
213
if state == avahi.ENTRY_GROUP_ESTABLISHED:
427
214
logger.debug("Zeroconf service established.")
428
215
elif state == avahi.ENTRY_GROUP_COLLISION:
430
217
self.rename()
431
218
elif state == avahi.ENTRY_GROUP_FAILURE:
432
219
logger.critical("Avahi: Error in group state changed %s",
433
str(error))
434
raise AvahiGroupError("State changed: {!s}".format(error))
435
220
unicode(error))
221
raise AvahiGroupError("State changed: %s"
222
% unicode(error))
436
223
def cleanup(self):
437
224
"""Derived from the Avahi example code"""
438
225
if self.group is not None:
439
226
try:
440
227
self.group.Free()
441
228
except (dbus.exceptions.UnknownMethodException,
442
dbus.exceptions.DBusException):
229
dbus.exceptions.DBusException) as e:
443
230
pass
444
231
self.group = None
445
232
self.remove()
446
447
233
def server_state_changed(self, state, error=None):
448
234
"""Derived from the Avahi example code"""
449
235
logger.debug("Avahi server state change: %i", state)
450
bad_states = {
451
avahi.SERVER_INVALID: "Zeroconf server invalid",
452
avahi.SERVER_REGISTERING: None,
453
avahi.SERVER_COLLISION: "Zeroconf server name collision",
454
avahi.SERVER_FAILURE: "Zeroconf server failure",
455
}
236
bad_states = { avahi.SERVER_INVALID:
237
"Zeroconf server invalid",
238
avahi.SERVER_REGISTERING: None,
239
avahi.SERVER_COLLISION:
240
"Zeroconf server name collision",
241
avahi.SERVER_FAILURE:
242
"Zeroconf server failure" }
456
243
if state in bad_states:
457
244
if bad_states[state] is not None:
458
245
if error is None:
461
248
logger.error(bad_states[state] + ": %r", error)
462
249
self.cleanup()
463
250
elif state == avahi.SERVER_RUNNING:
464
try:
465
self.add()
466
except dbus.exceptions.DBusException as error:
467
if (error.get_dbus_name()
468
== "org.freedesktop.Avahi.CollisionError"):
469
logger.info("Local Zeroconf service name"
470
" collision.")
471
return self.rename(remove=False)
472
else:
473
logger.critical("D-Bus Exception", exc_info=error)
474
self.cleanup()
475
os._exit(1)
251
self.add()
476
252
else:
477
253
if error is None:
478
254
logger.debug("Unknown state: %r", state)
479
255
else:
480
256
logger.debug("Unknown state: %r: %r", state, error)
481
482
257
def activate(self):
483
258
"""Derived from the Avahi example code"""
484
259
if self.server is None:
488
263
follow_name_owner_changes=True),
489
264
avahi.DBUS_INTERFACE_SERVER)
490
265
self.server.connect_to_signal("StateChanged",
491
self.server_state_changed)
266
self.server_state_changed)
492
267
self.server_state_changed(self.server.GetState())
493
268
494
495
269
class AvahiServiceToSyslog(AvahiService):
496
def rename(self, *args, **kwargs):
270
def rename(self):
497
271
"""Add the new name to the syslog messages"""
498
ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
499
syslogger.setFormatter(logging.Formatter(
500
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
501
.format(self.name)))
272
ret = AvahiService.rename(self)
273
syslogger.setFormatter(logging.Formatter
274
('Mandos (%s) [%%(process)d]:'
275
' %%(levelname)s: %%(message)s'
276
% self.name))
502
277
return ret
503
278
504
505
# Pretend that we have a GnuTLS module
506
class gnutls(object):
507
"""This isn't so much a class as it is a module-like namespace."""
508
509
library = ctypes.util.find_library("gnutls")
510
if library is None:
511
library = ctypes.util.find_library("gnutls-deb0")
512
_library = ctypes.cdll.LoadLibrary(library)
513
del library
514
515
# Unless otherwise indicated, the constants and types below are
516
# all from the gnutls/gnutls.h C header file.
517
518
# Constants
519
E_SUCCESS = 0
520
E_INTERRUPTED = -52
521
E_AGAIN = -28
522
CRT_OPENPGP = 2
523
CRT_RAWPK = 3
524
CLIENT = 2
525
SHUT_RDWR = 0
526
CRD_CERTIFICATE = 1
527
E_NO_CERTIFICATE_FOUND = -49
528
X509_FMT_DER = 0
529
NO_TICKETS = 1<<10
530
ENABLE_RAWPK = 1<<18
531
CTYPE_PEERS = 3
532
KEYID_USE_SHA256 = 1 # gnutls/x509.h
533
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
534
535
# Types
536
class session_int(ctypes.Structure):
537
_fields_ = []
538
session_t = ctypes.POINTER(session_int)
539
540
class certificate_credentials_st(ctypes.Structure):
541
_fields_ = []
542
certificate_credentials_t = ctypes.POINTER(
543
certificate_credentials_st)
544
certificate_type_t = ctypes.c_int
545
546
class datum_t(ctypes.Structure):
547
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
548
('size', ctypes.c_uint)]
549
550
class openpgp_crt_int(ctypes.Structure):
551
_fields_ = []
552
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
553
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
554
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
555
credentials_type_t = ctypes.c_int
556
transport_ptr_t = ctypes.c_void_p
557
close_request_t = ctypes.c_int
558
559
# Exceptions
560
class Error(Exception):
561
def __init__(self, message=None, code=None, args=()):
562
# Default usage is by a message string, but if a return
563
# code is passed, convert it to a string with
564
# gnutls.strerror()
565
self.code = code
566
if message is None and code is not None:
567
message = gnutls.strerror(code)
568
return super(gnutls.Error, self).__init__(
569
message, *args)
570
571
class CertificateSecurityError(Error):
572
pass
573
574
# Classes
575
class Credentials(object):
576
def __init__(self):
577
self._c_object = gnutls.certificate_credentials_t()
578
gnutls.certificate_allocate_credentials(
579
ctypes.byref(self._c_object))
580
self.type = gnutls.CRD_CERTIFICATE
581
582
def __del__(self):
583
gnutls.certificate_free_credentials(self._c_object)
584
585
class ClientSession(object):
586
def __init__(self, socket, credentials=None):
587
self._c_object = gnutls.session_t()
588
gnutls_flags = gnutls.CLIENT
589
if gnutls.check_version("3.5.6"):
590
gnutls_flags |= gnutls.NO_TICKETS
591
if gnutls.has_rawpk:
592
gnutls_flags |= gnutls.ENABLE_RAWPK
593
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
594
del gnutls_flags
595
gnutls.set_default_priority(self._c_object)
596
gnutls.transport_set_ptr(self._c_object, socket.fileno())
597
gnutls.handshake_set_private_extensions(self._c_object,
598
True)
599
self.socket = socket
600
if credentials is None:
601
credentials = gnutls.Credentials()
602
gnutls.credentials_set(self._c_object, credentials.type,
603
ctypes.cast(credentials._c_object,
604
ctypes.c_void_p))
605
self.credentials = credentials
606
607
def __del__(self):
608
gnutls.deinit(self._c_object)
609
610
def handshake(self):
611
return gnutls.handshake(self._c_object)
612
613
def send(self, data):
614
data = bytes(data)
615
data_len = len(data)
616
while data_len > 0:
617
data_len -= gnutls.record_send(self._c_object,
618
data[-data_len:],
619
data_len)
620
621
def bye(self):
622
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
623
624
# Error handling functions
625
def _error_code(result):
626
"""A function to raise exceptions on errors, suitable
627
for the 'restype' attribute on ctypes functions"""
628
if result >= 0:
629
return result
630
if result == gnutls.E_NO_CERTIFICATE_FOUND:
631
raise gnutls.CertificateSecurityError(code=result)
632
raise gnutls.Error(code=result)
633
634
def _retry_on_error(result, func, arguments):
635
"""A function to retry on some errors, suitable
636
for the 'errcheck' attribute on ctypes functions"""
637
while result < 0:
638
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
639
return _error_code(result)
640
result = func(*arguments)
641
return result
642
643
# Unless otherwise indicated, the function declarations below are
644
# all from the gnutls/gnutls.h C header file.
645
646
# Functions
647
priority_set_direct = _library.gnutls_priority_set_direct
648
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
649
ctypes.POINTER(ctypes.c_char_p)]
650
priority_set_direct.restype = _error_code
651
652
init = _library.gnutls_init
653
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
654
init.restype = _error_code
655
656
set_default_priority = _library.gnutls_set_default_priority
657
set_default_priority.argtypes = [session_t]
658
set_default_priority.restype = _error_code
659
660
record_send = _library.gnutls_record_send
661
record_send.argtypes = [session_t, ctypes.c_void_p,
662
ctypes.c_size_t]
663
record_send.restype = ctypes.c_ssize_t
664
record_send.errcheck = _retry_on_error
665
666
certificate_allocate_credentials = (
667
_library.gnutls_certificate_allocate_credentials)
668
certificate_allocate_credentials.argtypes = [
669
ctypes.POINTER(certificate_credentials_t)]
670
certificate_allocate_credentials.restype = _error_code
671
672
certificate_free_credentials = (
673
_library.gnutls_certificate_free_credentials)
674
certificate_free_credentials.argtypes = [
675
certificate_credentials_t]
676
certificate_free_credentials.restype = None
677
678
handshake_set_private_extensions = (
679
_library.gnutls_handshake_set_private_extensions)
680
handshake_set_private_extensions.argtypes = [session_t,
681
ctypes.c_int]
682
handshake_set_private_extensions.restype = None
683
684
credentials_set = _library.gnutls_credentials_set
685
credentials_set.argtypes = [session_t, credentials_type_t,
686
ctypes.c_void_p]
687
credentials_set.restype = _error_code
688
689
strerror = _library.gnutls_strerror
690
strerror.argtypes = [ctypes.c_int]
691
strerror.restype = ctypes.c_char_p
692
693
certificate_type_get = _library.gnutls_certificate_type_get
694
certificate_type_get.argtypes = [session_t]
695
certificate_type_get.restype = _error_code
696
697
certificate_get_peers = _library.gnutls_certificate_get_peers
698
certificate_get_peers.argtypes = [session_t,
699
ctypes.POINTER(ctypes.c_uint)]
700
certificate_get_peers.restype = ctypes.POINTER(datum_t)
701
702
global_set_log_level = _library.gnutls_global_set_log_level
703
global_set_log_level.argtypes = [ctypes.c_int]
704
global_set_log_level.restype = None
705
706
global_set_log_function = _library.gnutls_global_set_log_function
707
global_set_log_function.argtypes = [log_func]
708
global_set_log_function.restype = None
709
710
deinit = _library.gnutls_deinit
711
deinit.argtypes = [session_t]
712
deinit.restype = None
713
714
handshake = _library.gnutls_handshake
715
handshake.argtypes = [session_t]
716
handshake.restype = _error_code
717
handshake.errcheck = _retry_on_error
718
719
transport_set_ptr = _library.gnutls_transport_set_ptr
720
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
721
transport_set_ptr.restype = None
722
723
bye = _library.gnutls_bye
724
bye.argtypes = [session_t, close_request_t]
725
bye.restype = _error_code
726
bye.errcheck = _retry_on_error
727
728
check_version = _library.gnutls_check_version
729
check_version.argtypes = [ctypes.c_char_p]
730
check_version.restype = ctypes.c_char_p
731
732
_need_version = b"3.3.0"
733
if check_version(_need_version) is None:
734
raise self.Error("Needs GnuTLS {} or later"
735
.format(_need_version))
736
737
_tls_rawpk_version = b"3.6.6"
738
has_rawpk = bool(check_version(_tls_rawpk_version))
739
740
if has_rawpk:
741
# Types
742
class pubkey_st(ctypes.Structure):
743
_fields = []
744
pubkey_t = ctypes.POINTER(pubkey_st)
745
746
x509_crt_fmt_t = ctypes.c_int
747
748
# All the function declarations below are from gnutls/abstract.h
749
pubkey_init = _library.gnutls_pubkey_init
750
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
751
pubkey_init.restype = _error_code
752
753
pubkey_import = _library.gnutls_pubkey_import
754
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
755
x509_crt_fmt_t]
756
pubkey_import.restype = _error_code
757
758
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
759
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
760
ctypes.POINTER(ctypes.c_ubyte),
761
ctypes.POINTER(ctypes.c_size_t)]
762
pubkey_get_key_id.restype = _error_code
763
764
pubkey_deinit = _library.gnutls_pubkey_deinit
765
pubkey_deinit.argtypes = [pubkey_t]
766
pubkey_deinit.restype = None
767
else:
768
# All the function declarations below are from gnutls/openpgp.h
769
770
openpgp_crt_init = _library.gnutls_openpgp_crt_init
771
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
772
openpgp_crt_init.restype = _error_code
773
774
openpgp_crt_import = _library.gnutls_openpgp_crt_import
775
openpgp_crt_import.argtypes = [openpgp_crt_t,
776
ctypes.POINTER(datum_t),
777
openpgp_crt_fmt_t]
778
openpgp_crt_import.restype = _error_code
779
780
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
781
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
782
ctypes.POINTER(ctypes.c_uint)]
783
openpgp_crt_verify_self.restype = _error_code
784
785
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
786
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
787
openpgp_crt_deinit.restype = None
788
789
openpgp_crt_get_fingerprint = (
790
_library.gnutls_openpgp_crt_get_fingerprint)
791
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
792
ctypes.c_void_p,
793
ctypes.POINTER(
794
ctypes.c_size_t)]
795
openpgp_crt_get_fingerprint.restype = _error_code
796
797
if check_version("3.6.4"):
798
certificate_type_get2 = _library.gnutls_certificate_type_get2
799
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
800
certificate_type_get2.restype = _error_code
801
802
# Remove non-public functions
803
del _error_code, _retry_on_error
804
805
806
def call_pipe(connection, # : multiprocessing.Connection
807
func, *args, **kwargs):
808
"""This function is meant to be called by multiprocessing.Process
809
810
This function runs func(*args, **kwargs), and writes the resulting
811
return value on the provided multiprocessing.Connection.
812
"""
813
connection.send(func(*args, **kwargs))
814
connection.close()
815
816
279
def _timedelta_to_milliseconds(td):
280
"Convert a datetime.timedelta() to milliseconds"
281
return ((td.days * 24 * 60 * 60 * 1000)
282
+ (td.seconds * 1000)
283
+ (td.microseconds // 1000))
284
817
285
class Client(object):
818
286
"""A representation of a client host served by this server.
819
287
820
288
Attributes:
821
approved: bool(); 'None' if not yet approved/disapproved
289
_approved: bool(); 'None' if not yet approved/disapproved
822
290
approval_delay: datetime.timedelta(); Time to wait for approval
823
291
approval_duration: datetime.timedelta(); Duration of one approval
824
292
checker: subprocess.Popen(); a running checker process used
825
293
to see if the client lives.
826
294
'None' if no process is running.
827
checker_callback_tag: a GLib event source tag, or None
295
checker_callback_tag: a gobject event source tag, or None
828
296
checker_command: string; External command which is run to check
829
297
if client lives. %() expansions are done at
830
298
runtime with vars(self) as dict, so that for
831
299
instance %(name)s can be used in the command.
832
checker_initiator_tag: a GLib event source tag, or None
300
checker_initiator_tag: a gobject event source tag, or None
833
301
created: datetime.datetime(); (UTC) object creation
834
302
client_structure: Object describing what attributes a client has
835
303
and is used for storing the client at exit
836
304
current_checker_command: string; current running checker_command
837
disable_initiator_tag: a GLib event source tag, or None
305
disable_initiator_tag: a gobject event source tag, or None
838
306
enabled: bool()
839
307
fingerprint: string (40 or 32 hexadecimal digits); used to
840
uniquely identify an OpenPGP client
841
key_id: string (64 hexadecimal digits); used to uniquely identify
842
a client using raw public keys
308
uniquely identify the client
843
309
host: string; available for use by the checker command
844
310
interval: datetime.timedelta(); How often to start a new checker
845
311
last_approval_request: datetime.datetime(); (UTC) or None
846
312
last_checked_ok: datetime.datetime(); (UTC) or None
847
313
last_checker_status: integer between 0 and 255 reflecting exit
848
status of last checker. -1 reflects crashed
849
checker, -2 means no checker completed yet.
850
last_checker_signal: The signal which killed the last checker, if
851
last_checker_status is -1
852
last_enabled: datetime.datetime(); (UTC) or None
314
status of last checker. -1 reflect crashed
315
checker, or None.
316
last_enabled: datetime.datetime(); (UTC)
853
317
name: string; from the config file, used in log messages and
854
318
D-Bus identifiers
855
319
secret: bytestring; sent verbatim (over TLS) to client
856
320
timeout: datetime.timedelta(); How long from last_checked_ok
857
321
until this client is disabled
858
extended_timeout: extra long timeout when secret has been sent
322
extended_timeout: extra long timeout when password has been sent
859
323
runtime_expansions: Allowed attributes for runtime expansion.
860
324
expires: datetime.datetime(); time (UTC) when a client will be
861
325
disabled, or None
862
server_settings: The server_settings dict from main()
863
326
"""
864
327
865
328
runtime_expansions = ("approval_delay", "approval_duration",
866
"created", "enabled", "expires", "key_id",
867
"fingerprint", "host", "interval",
868
"last_approval_request", "last_checked_ok",
329
"created", "enabled", "fingerprint",
330
"host", "interval", "last_checked_ok",
869
331
"last_enabled", "name", "timeout")
870
client_defaults = {
871
"timeout": "PT5M",
872
"extended_timeout": "PT15M",
873
"interval": "PT2M",
874
"checker": "fping -q -- %%(host)s",
875
"host": "",
876
"approval_delay": "PT0S",
877
"approval_duration": "PT1S",
878
"approved_by_default": "True",
879
"enabled": "True",
880
}
881
882
@staticmethod
883
def config_parser(config):
884
"""Construct a new dict of client settings of this form:
885
{ client_name: {setting_name: value, ...}, ...}
886
with exceptions for any special settings as defined above.
887
NOTE: Must be a pure function. Must return the same result
888
value given the same arguments.
889
"""
890
settings = {}
891
for client_name in config.sections():
892
section = dict(config.items(client_name))
893
client = settings[client_name] = {}
894
895
client["host"] = section["host"]
896
# Reformat values from string types to Python types
897
client["approved_by_default"] = config.getboolean(
898
client_name, "approved_by_default")
899
client["enabled"] = config.getboolean(client_name,
900
"enabled")
901
902
# Uppercase and remove spaces from key_id and fingerprint
903
# for later comparison purposes with return value from the
904
# key_id() and fingerprint() functions
905
client["key_id"] = (section.get("key_id", "").upper()
906
.replace(" ", ""))
907
client["fingerprint"] = (section["fingerprint"].upper()
908
.replace(" ", ""))
909
if "secret" in section:
910
client["secret"] = codecs.decode(section["secret"]
911
.encode("utf-8"),
912
"base64")
913
elif "secfile" in section:
914
with open(os.path.expanduser(os.path.expandvars
915
(section["secfile"])),
916
"rb") as secfile:
917
client["secret"] = secfile.read()
918
else:
919
raise TypeError("No secret or secfile for section {}"
920
.format(section))
921
client["timeout"] = string_to_delta(section["timeout"])
922
client["extended_timeout"] = string_to_delta(
923
section["extended_timeout"])
924
client["interval"] = string_to_delta(section["interval"])
925
client["approval_delay"] = string_to_delta(
926
section["approval_delay"])
927
client["approval_duration"] = string_to_delta(
928
section["approval_duration"])
929
client["checker_command"] = section["checker"]
930
client["last_approval_request"] = None
931
client["last_checked_ok"] = None
932
client["last_checker_status"] = -2
933
934
return settings
935
936
def __init__(self, settings, name=None, server_settings=None):
332
333
def timeout_milliseconds(self):
334
"Return the 'timeout' attribute in milliseconds"
335
return _timedelta_to_milliseconds(self.timeout)
336
337
def extended_timeout_milliseconds(self):
338
"Return the 'extended_timeout' attribute in milliseconds"
339
return _timedelta_to_milliseconds(self.extended_timeout)
340
341
def interval_milliseconds(self):
342
"Return the 'interval' attribute in milliseconds"
343
return _timedelta_to_milliseconds(self.interval)
344
345
def approval_delay_milliseconds(self):
346
return _timedelta_to_milliseconds(self.approval_delay)
347
348
def __init__(self, name = None, config=None):
349
"""Note: the 'checker' key in 'config' sets the
350
'checker_command' attribute and *not* the 'checker'
351
attribute."""
937
352
self.name = name
938
if server_settings is None:
939
server_settings = {}
940
self.server_settings = server_settings
941
# adding all client settings
942
for setting, value in settings.items():
943
setattr(self, setting, value)
944
945
if self.enabled:
946
if not hasattr(self, "last_enabled"):
947
self.last_enabled = datetime.datetime.utcnow()
948
if not hasattr(self, "expires"):
949
self.expires = (datetime.datetime.utcnow()
950
+ self.timeout)
951
else:
952
self.last_enabled = None
953
self.expires = None
954
353
if config is None:
354
config = {}
955
355
logger.debug("Creating client %r", self.name)
956
logger.debug(" Key ID: %s", self.key_id)
356
# Uppercase and remove spaces from fingerprint for later
357
# comparison purposes with return value from the fingerprint()
358
# function
359
self.fingerprint = (config["fingerprint"].upper()
360
.replace(" ", ""))
957
361
logger.debug(" Fingerprint: %s", self.fingerprint)
958
self.created = settings.get("created",
959
datetime.datetime.utcnow())
960
961
# attributes specific for this server instance
362
if "secret" in config:
363
self.secret = config["secret"].decode("base64")
364
elif "secfile" in config:
365
with open(os.path.expanduser(os.path.expandvars
366
(config["secfile"])),
367
"rb") as secfile:
368
self.secret = secfile.read()
369
else:
370
raise TypeError("No secret or secfile for client %s"
371
% self.name)
372
self.host = config.get("host", "")
373
self.created = datetime.datetime.utcnow()
374
self.enabled = True
375
self.last_approval_request = None
376
self.last_enabled = datetime.datetime.utcnow()
377
self.last_checked_ok = None
378
self.last_checker_status = None
379
self.timeout = string_to_delta(config["timeout"])
380
self.extended_timeout = string_to_delta(config
381
["extended_timeout"])
382
self.interval = string_to_delta(config["interval"])
962
383
self.checker = None
963
384
self.checker_initiator_tag = None
964
385
self.disable_initiator_tag = None
386
self.expires = datetime.datetime.utcnow() + self.timeout
965
387
self.checker_callback_tag = None
388
self.checker_command = config["checker"]
966
389
self.current_checker_command = None
967
self.approved = None
390
self._approved = None
391
self.approved_by_default = config.get("approved_by_default",
392
True)
968
393
self.approvals_pending = 0
969
self.changedstate = multiprocessing_manager.Condition(
970
multiprocessing_manager.Lock())
971
self.client_structure = [attr
972
for attr in self.__dict__.keys()
394
self.approval_delay = string_to_delta(
395
config["approval_delay"])
396
self.approval_duration = string_to_delta(
397
config["approval_duration"])
398
self.changedstate = (multiprocessing_manager
399
.Condition(multiprocessing_manager
400
.Lock()))
401
self.client_structure = [attr for attr
402
in self.__dict__.iterkeys()
973
403
if not attr.startswith("_")]
974
404
self.client_structure.append("client_structure")
975
405
976
for name, t in inspect.getmembers(
977
type(self), lambda obj: isinstance(obj, property)):
406
407
for name, t in inspect.getmembers(type(self),
408
lambda obj:
409
isinstance(obj,
410
property)):
978
411
if not name.startswith("_"):
979
412
self.client_structure.append(name)
980
413
981
414
# Send notice to process children that client state has changed
982
415
def send_changedstate(self):
983
416
with self.changedstate:
984
417
self.changedstate.notify_all()
985
418
986
419
def enable(self):
987
420
"""Start this client's checker and timeout hooks"""
988
421
if getattr(self, "enabled", False):
989
422
# Already enabled
990
423
return
424
self.send_changedstate()
991
425
self.expires = datetime.datetime.utcnow() + self.timeout
992
426
self.enabled = True
993
427
self.last_enabled = datetime.datetime.utcnow()
994
428
self.init_checker()
995
self.send_changedstate()
996
429
997
430
def disable(self, quiet=True):
998
431
"""Disable this client."""
999
432
if not getattr(self, "enabled", False):
1000
433
return False
1001
434
if not quiet:
435
self.send_changedstate()
436
if not quiet:
1002
437
logger.info("Disabling client %s", self.name)
1003
if getattr(self, "disable_initiator_tag", None) is not None:
1004
GLib.source_remove(self.disable_initiator_tag)
438
if getattr(self, "disable_initiator_tag", False):
439
gobject.source_remove(self.disable_initiator_tag)
1005
440
self.disable_initiator_tag = None
1006
441
self.expires = None
1007
if getattr(self, "checker_initiator_tag", None) is not None:
1008
GLib.source_remove(self.checker_initiator_tag)
442
if getattr(self, "checker_initiator_tag", False):
443
gobject.source_remove(self.checker_initiator_tag)
1009
444
self.checker_initiator_tag = None
1010
445
self.stop_checker()
1011
446
self.enabled = False
1012
if not quiet:
1013
self.send_changedstate()
1014
# Do not run this again if called by a GLib.timeout_add
447
# Do not run this again if called by a gobject.timeout_add
1015
448
return False
1016
449
1017
450
def __del__(self):
1018
451
self.disable()
1019
452
1020
453
def init_checker(self):
1021
454
# Schedule a new checker to be started an 'interval' from now,
1022
455
# and every interval from then on.
1023
if self.checker_initiator_tag is not None:
1024
GLib.source_remove(self.checker_initiator_tag)
1025
self.checker_initiator_tag = GLib.timeout_add(
1026
int(self.interval.total_seconds() * 1000),
1027
self.start_checker)
456
self.checker_initiator_tag = (gobject.timeout_add
457
(self.interval_milliseconds(),
458
self.start_checker))
1028
459
# Schedule a disable() when 'timeout' has passed
1029
if self.disable_initiator_tag is not None:
1030
GLib.source_remove(self.disable_initiator_tag)
1031
self.disable_initiator_tag = GLib.timeout_add(
1032
int(self.timeout.total_seconds() * 1000), self.disable)
460
self.disable_initiator_tag = (gobject.timeout_add
461
(self.timeout_milliseconds(),
462
self.disable))
1033
463
# Also start a new checker *right now*.
1034
464
self.start_checker()
1035
465
1036
def checker_callback(self, source, condition, connection,
1037
command):
466
467
def checker_callback(self, pid, condition, command):
1038
468
"""The checker has completed, so take appropriate actions."""
1039
469
self.checker_callback_tag = None
1040
470
self.checker = None
1041
# Read return code from connection (see call_pipe)
1042
returncode = connection.recv()
1043
connection.close()
1044
1045
if returncode >= 0:
1046
self.last_checker_status = returncode
1047
self.last_checker_signal = None
471
if os.WIFEXITED(condition):
472
self.last_checker_status = os.WEXITSTATUS(condition)
1048
473
if self.last_checker_status == 0:
1049
474
logger.info("Checker for %(name)s succeeded",
1050
475
vars(self))
1051
476
self.checked_ok()
1052
477
else:
1053
logger.info("Checker for %(name)s failed", vars(self))
478
logger.info("Checker for %(name)s failed",
479
vars(self))
1054
480
else:
1055
481
self.last_checker_status = -1
1056
self.last_checker_signal = -returncode
1057
482
logger.warning("Checker for %(name)s crashed?",
1058
483
vars(self))
1059
return False
1060
1061
def checked_ok(self):
1062
"""Assert that the client has been seen, alive and well."""
1063
self.last_checked_ok = datetime.datetime.utcnow()
1064
self.last_checker_status = 0
1065
self.last_checker_signal = None
1066
self.bump_timeout()
1067
1068
def bump_timeout(self, timeout=None):
1069
"""Bump up the timeout for this client."""
484
485
def checked_ok(self, timeout=None):
486
"""Bump up the timeout for this client.
487
488
This should only be called when the client has been seen,
489
alive and well.
490
"""
1070
491
if timeout is None:
1071
492
timeout = self.timeout
493
self.last_checked_ok = datetime.datetime.utcnow()
1072
494
if self.disable_initiator_tag is not None:
1073
GLib.source_remove(self.disable_initiator_tag)
1074
self.disable_initiator_tag = None
495
gobject.source_remove(self.disable_initiator_tag)
1075
496
if getattr(self, "enabled", False):
1076
self.disable_initiator_tag = GLib.timeout_add(
1077
int(timeout.total_seconds() * 1000), self.disable)
497
self.disable_initiator_tag = (gobject.timeout_add
498
(_timedelta_to_milliseconds
499
(timeout), self.disable))
1078
500
self.expires = datetime.datetime.utcnow() + timeout
1079
501
1080
502
def need_approval(self):
1081
503
self.last_approval_request = datetime.datetime.utcnow()
1082
504
1083
505
def start_checker(self):
1084
506
"""Start a new checker subprocess if one is not running.
1085
507
1086
508
If a checker already exists, leave it running and do
1087
509
nothing."""
1088
510
# The reason for not killing a running checker is that if we
1089
# did that, and if a checker (for some reason) started running
1090
# slowly and taking more than 'interval' time, then the client
1091
# would inevitably timeout, since no checker would get a
1092
# chance to run to completion. If we instead leave running
511
# did that, then if a checker (for some reason) started
512
# running slowly and taking more than 'interval' time, the
513
# client would inevitably timeout, since no checker would get
514
# a chance to run to completion. If we instead leave running
1093
515
# checkers alone, the checker would have to take more time
1094
516
# than 'timeout' for the client to be disabled, which is as it
1095
517
# should be.
1096
1097
if self.checker is not None and not self.checker.is_alive():
1098
logger.warning("Checker was not alive; joining")
1099
self.checker.join()
1100
self.checker = None
518
519
# If a checker exists, make sure it is not a zombie
520
try:
521
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
522
except (AttributeError, OSError) as error:
523
if (isinstance(error, OSError)
524
and error.errno != errno.ECHILD):
525
raise error
526
else:
527
if pid:
528
logger.warning("Checker was a zombie")
529
gobject.source_remove(self.checker_callback_tag)
530
self.checker_callback(pid, status,
531
self.current_checker_command)
1101
532
# Start a new checker if needed
1102
533
if self.checker is None:
1103
# Escape attributes for the shell
1104
escaped_attrs = {
1105
attr: re.escape(str(getattr(self, attr)))
1106
for attr in self.runtime_expansions}
1107
534
try:
1108
command = self.checker_command % escaped_attrs
1109
except TypeError as error:
1110
logger.error('Could not format string "%s"',
1111
self.checker_command,
1112
exc_info=error)
1113
return True # Try again later
535
# In case checker_command has exactly one % operator
536
command = self.checker_command % self.host
537
except TypeError:
538
# Escape attributes for the shell
539
escaped_attrs = dict(
540
(attr,
541
re.escape(unicode(str(getattr(self, attr, "")),
542
errors=
543
'replace')))
544
for attr in
545
self.runtime_expansions)
546
547
try:
548
command = self.checker_command % escaped_attrs
549
except TypeError as error:
550
logger.error('Could not format string "%s":'
551
' %s', self.checker_command, error)
552
return True # Try again later
1114
553
self.current_checker_command = command
1115
logger.info("Starting checker %r for %s", command,
1116
self.name)
1117
# We don't need to redirect stdout and stderr, since
1118
# in normal mode, that is already done by daemon(),
1119
# and in debug mode we don't want to. (Stdin is
1120
# always replaced by /dev/null.)
1121
# The exception is when not debugging but nevertheless
1122
# running in the foreground; use the previously
1123
# created wnull.
1124
popen_args = {"close_fds": True,
1125
"shell": True,
1126
"cwd": "/"}
1127
if (not self.server_settings["debug"]
1128
and self.server_settings["foreground"]):
1129
popen_args.update({"stdout": wnull,
1130
"stderr": wnull})
1131
pipe = multiprocessing.Pipe(duplex=False)
1132
self.checker = multiprocessing.Process(
1133
target=call_pipe,
1134
args=(pipe[1], subprocess.call, command),
1135
kwargs=popen_args)
1136
self.checker.start()
1137
self.checker_callback_tag = GLib.io_add_watch(
1138
pipe[0].fileno(), GLib.IO_IN,
1139
self.checker_callback, pipe[0], command)
1140
# Re-run this periodically if run by GLib.timeout_add
554
try:
555
logger.info("Starting checker %r for %s",
556
command, self.name)
557
# We don't need to redirect stdout and stderr, since
558
# in normal mode, that is already done by daemon(),
559
# and in debug mode we don't want to. (Stdin is
560
# always replaced by /dev/null.)
561
self.checker = subprocess.Popen(command,
562
close_fds=True,
563
shell=True, cwd="/")
564
self.checker_callback_tag = (gobject.child_watch_add
565
(self.checker.pid,
566
self.checker_callback,
567
data=command))
568
# The checker may have completed before the gobject
569
# watch was added. Check for this.
570
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
571
if pid:
572
gobject.source_remove(self.checker_callback_tag)
573
self.checker_callback(pid, status, command)
574
except OSError as error:
575
logger.error("Failed to start subprocess: %s",
576
error)
577
# Re-run this periodically if run by gobject.timeout_add
1141
578
return True
1142
579
1143
580
def stop_checker(self):
1144
581
"""Force the checker process, if any, to stop."""
1145
582
if self.checker_callback_tag:
1146
GLib.source_remove(self.checker_callback_tag)
583
gobject.source_remove(self.checker_callback_tag)
1147
584
self.checker_callback_tag = None
1148
585
if getattr(self, "checker", None) is None:
1149
586
return
1150
587
logger.debug("Stopping checker for %(name)s", vars(self))
1151
self.checker.terminate()
588
try:
589
os.kill(self.checker.pid, signal.SIGTERM)
590
#time.sleep(0.5)
591
#if self.checker.poll() is None:
592
# os.kill(self.checker.pid, signal.SIGKILL)
593
except OSError as error:
594
if error.errno != errno.ESRCH: # No such process
595
raise
1152
596
self.checker = None
1153
597
1154
1155
def dbus_service_property(dbus_interface,
1156
signature="v",
1157
access="readwrite",
1158
byte_arrays=False):
598
# Encrypts a client secret and stores it in a varible
599
# encrypted_secret
600
def encrypt_secret(self, key):
601
# Encryption-key need to be of a specific size, so we hash
602
# supplied key
603
hasheng = hashlib.sha256()
604
hasheng.update(key)
605
encryptionkey = hasheng.digest()
606
607
# Create validation hash so we know at decryption if it was
608
# sucessful
609
hasheng = hashlib.sha256()
610
hasheng.update(self.secret)
611
validationhash = hasheng.digest()
612
613
# Encrypt secret
614
iv = os.urandom(Crypto.Cipher.AES.block_size)
615
ciphereng = Crypto.Cipher.AES.new(encryptionkey,
616
Crypto.Cipher.AES.MODE_CFB, iv)
617
ciphertext = ciphereng.encrypt(validationhash+self.secret)
618
self.encrypted_secret = (ciphertext, iv)
619
620
# Decrypt a encrypted client secret
621
def decrypt_secret(self, key):
622
# Decryption-key need to be of a specific size, so we hash
623
# supplied key
624
hasheng = hashlib.sha256()
625
hasheng.update(key)
626
encryptionkey = hasheng.digest()
627
628
# Decrypt encrypted secret
629
ciphertext, iv = self.encrypted_secret
630
ciphereng = Crypto.Cipher.AES.new(encryptionkey,
631
Crypto.Cipher.AES.MODE_CFB, iv)
632
plain = ciphereng.decrypt(ciphertext)
633
634
# Validate decrypted secret to know if it was succesful
635
hasheng = hashlib.sha256()
636
validationhash = plain[:hasheng.digest_size]
637
secret = plain[hasheng.digest_size:]
638
hasheng.update(secret)
639
640
# If validation fails, we use key as new secret. Otherwise, we
641
# use the decrypted secret
642
if hasheng.digest() == validationhash:
643
self.secret = secret
644
else:
645
self.secret = key
646
del self.encrypted_secret
647
648
649
def dbus_service_property(dbus_interface, signature="v",
650
access="readwrite", byte_arrays=False):
1159
651
"""Decorators for marking methods of a DBusObjectWithProperties to
1160
652
become properties on the D-Bus.
1161
653
1162
654
The decorated method will be called with no arguments by "Get"
1163
655
and with one argument by "Set".
1164
656
1165
657
The parameters, where they are supported, are the same as
1166
658
dbus.service.method, except there is only "signature", since the
1167
659
type from Get() and the type sent to Set() is the same.
1170
662
# "Set" method, so we fail early here:
1171
663
if byte_arrays and signature != "ay":
1172
664
raise ValueError("Byte arrays not supported for non-'ay'"
1173
" signature {!r}".format(signature))
1174
665
" signature %r" % signature)
1175
666
def decorator(func):
1176
667
func._dbus_is_property = True
1177
668
func._dbus_interface = dbus_interface
1180
671
func._dbus_name = func.__name__
1181
672
if func._dbus_name.endswith("_dbus_property"):
1182
673
func._dbus_name = func._dbus_name[:-14]
1183
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
1184
return func
1185
1186
return decorator
1187
1188
1189
def dbus_interface_annotations(dbus_interface):
1190
"""Decorator for marking functions returning interface annotations
1191
1192
Usage:
1193
1194
@dbus_interface_annotations("org.example.Interface")
1195
def _foo(self): # Function name does not matter
1196
return {"org.freedesktop.DBus.Deprecated": "true",
1197
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1198
"false"}
1199
"""
1200
1201
def decorator(func):
1202
func._dbus_is_interface = True
1203
func._dbus_interface = dbus_interface
1204
func._dbus_name = dbus_interface
1205
return func
1206
1207
return decorator
1208
1209
1210
def dbus_annotations(annotations):
1211
"""Decorator to annotate D-Bus methods, signals or properties
1212
Usage:
1213
1214
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1215
"org.freedesktop.DBus.Property."
1216
"EmitsChangedSignal": "false"})
1217
@dbus_service_property("org.example.Interface", signature="b",
1218
access="r")
1219
def Property_dbus_property(self):
1220
return dbus.Boolean(False)
1221
1222
See also the DBusObjectWithAnnotations class.
1223
"""
1224
1225
def decorator(func):
1226
func._dbus_annotations = annotations
1227
return func
1228
674
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
675
return func
1229
676
return decorator
1230
677
1231
678
1232
679
class DBusPropertyException(dbus.exceptions.DBusException):
1233
680
"""A base class for D-Bus property-related exceptions
1234
681
"""
1235
pass
682
def __unicode__(self):
683
return unicode(str(self))
1236
684
1237
685
1238
686
class DBusPropertyAccessException(DBusPropertyException):
1247
695
pass
1248
696
1249
697
1250
class DBusObjectWithAnnotations(dbus.service.Object):
1251
"""A D-Bus object with annotations.
1252
1253
Classes inheriting from this can use the dbus_annotations
1254
decorator to add annotations to methods or signals.
1255
"""
1256
1257
@staticmethod
1258
def _is_dbus_thing(thing):
1259
"""Returns a function testing if an attribute is a D-Bus thing
1260
1261
If called like _is_dbus_thing("method") it returns a function
1262
suitable for use as predicate to inspect.getmembers().
1263
"""
1264
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1265
False)
1266
1267
def _get_all_dbus_things(self, thing):
1268
"""Returns a generator of (name, attribute) pairs
1269
"""
1270
return ((getattr(athing.__get__(self), "_dbus_name", name),
1271
athing.__get__(self))
1272
for cls in self.__class__.__mro__
1273
for name, athing in
1274
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1275
1276
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1277
out_signature="s",
1278
path_keyword='object_path',
1279
connection_keyword='connection')
1280
def Introspect(self, object_path, connection):
1281
"""Overloading of standard D-Bus method.
1282
1283
Inserts annotation tags on methods and signals.
1284
"""
1285
xmlstring = dbus.service.Object.Introspect(self, object_path,
1286
connection)
1287
try:
1288
document = xml.dom.minidom.parseString(xmlstring)
1289
1290
for if_tag in document.getElementsByTagName("interface"):
1291
# Add annotation tags
1292
for typ in ("method", "signal"):
1293
for tag in if_tag.getElementsByTagName(typ):
1294
annots = dict()
1295
for name, prop in (self.
1296
_get_all_dbus_things(typ)):
1297
if (name == tag.getAttribute("name")
1298
and prop._dbus_interface
1299
== if_tag.getAttribute("name")):
1300
annots.update(getattr(
1301
prop, "_dbus_annotations", {}))
1302
for name, value in annots.items():
1303
ann_tag = document.createElement(
1304
"annotation")
1305
ann_tag.setAttribute("name", name)
1306
ann_tag.setAttribute("value", value)
1307
tag.appendChild(ann_tag)
1308
# Add interface annotation tags
1309
for annotation, value in dict(
1310
itertools.chain.from_iterable(
1311
annotations().items()
1312
for name, annotations
1313
in self._get_all_dbus_things("interface")
1314
if name == if_tag.getAttribute("name")
1315
)).items():
1316
ann_tag = document.createElement("annotation")
1317
ann_tag.setAttribute("name", annotation)
1318
ann_tag.setAttribute("value", value)
1319
if_tag.appendChild(ann_tag)
1320
# Fix argument name for the Introspect method itself
1321
if (if_tag.getAttribute("name")
1322
== dbus.INTROSPECTABLE_IFACE):
1323
for cn in if_tag.getElementsByTagName("method"):
1324
if cn.getAttribute("name") == "Introspect":
1325
for arg in cn.getElementsByTagName("arg"):
1326
if (arg.getAttribute("direction")
1327
== "out"):
1328
arg.setAttribute("name",
1329
"xml_data")
1330
xmlstring = document.toxml("utf-8")
1331
document.unlink()
1332
except (AttributeError, xml.dom.DOMException,
1333
xml.parsers.expat.ExpatError) as error:
1334
logger.error("Failed to override Introspection method",
1335
exc_info=error)
1336
return xmlstring
1337
1338
1339
class DBusObjectWithProperties(DBusObjectWithAnnotations):
698
class DBusObjectWithProperties(dbus.service.Object):
1340
699
"""A D-Bus object with properties.
1341
700
1342
701
Classes inheriting from this can use the dbus_service_property
1343
702
decorator to expose methods as D-Bus properties. It exposes the
1344
703
standard Get(), Set(), and GetAll() methods on the D-Bus.
1345
704
"""
1346
705
706
@staticmethod
707
def _is_dbus_property(obj):
708
return getattr(obj, "_dbus_is_property", False)
709
710
def _get_all_dbus_properties(self):
711
"""Returns a generator of (name, attribute) pairs
712
"""
713
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
714
for cls in self.__class__.__mro__
715
for name, prop in
716
inspect.getmembers(cls, self._is_dbus_property))
717
1347
718
def _get_dbus_property(self, interface_name, property_name):
1348
719
"""Returns a bound method if one exists which is a D-Bus
1349
720
property with the specified name and interface.
1350
721
"""
1351
for cls in self.__class__.__mro__:
1352
for name, value in inspect.getmembers(
1353
cls, self._is_dbus_thing("property")):
722
for cls in self.__class__.__mro__:
723
for name, value in (inspect.getmembers
724
(cls, self._is_dbus_property)):
1354
725
if (value._dbus_name == property_name
1355
726
and value._dbus_interface == interface_name):
1356
727
return value.__get__(self)
1357
728
1358
729
# No such property
1359
raise DBusPropertyNotFound("{}:{}.{}".format(
1360
self.dbus_object_path, interface_name, property_name))
1361
1362
@classmethod
1363
def _get_all_interface_names(cls):
1364
"""Get a sequence of all interfaces supported by an object"""
1365
return (name for name in set(getattr(getattr(x, attr),
1366
"_dbus_interface", None)
1367
for x in (inspect.getmro(cls))
1368
for attr in dir(x))
1369
if name is not None)
1370
1371
@dbus.service.method(dbus.PROPERTIES_IFACE,
1372
in_signature="ss",
730
raise DBusPropertyNotFound(self.dbus_object_path + ":"
731
+ interface_name + "."
732
+ property_name)
733
734
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1373
735
out_signature="v")
1374
736
def Get(self, interface_name, property_name):
1375
737
"""Standard D-Bus property Get() method, see D-Bus standard.
1381
743
if not hasattr(value, "variant_level"):
1382
744
return value
1383
745
return type(value)(value, variant_level=value.variant_level+1)
1384
746
1385
747
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
1386
748
def Set(self, interface_name, property_name, value):
1387
749
"""Standard D-Bus property Set() method, see D-Bus standard.
1393
755
# The byte_arrays option is not supported yet on
1394
756
# signatures other than "ay".
1395
757
if prop._dbus_signature != "ay":
1396
raise ValueError("Byte arrays not supported for non-"
1397
"'ay' signature {!r}"
1398
.format(prop._dbus_signature))
1399
value = dbus.ByteArray(b''.join(chr(byte)
1400
for byte in value))
758
raise ValueError
759
value = dbus.ByteArray(''.join(unichr(byte)
760
for byte in value))
1401
761
prop(value)
1402
1403
@dbus.service.method(dbus.PROPERTIES_IFACE,
1404
in_signature="s",
762
763
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1405
764
out_signature="a{sv}")
1406
765
def GetAll(self, interface_name):
1407
766
"""Standard D-Bus property GetAll() method, see D-Bus
1408
767
standard.
1409
768
1410
769
Note: Will not include properties with access="write".
1411
770
"""
1412
properties = {}
1413
for name, prop in self._get_all_dbus_things("property"):
771
all = {}
772
for name, prop in self._get_all_dbus_properties():
1414
773
if (interface_name
1415
774
and interface_name != prop._dbus_interface):
1416
775
# Interface non-empty but did not match
1420
779
continue
1421
780
value = prop()
1422
781
if not hasattr(value, "variant_level"):
1423
properties[name] = value
782
all[name] = value
1424
783
continue
1425
properties[name] = type(value)(
1426
value, variant_level=value.variant_level + 1)
1427
return dbus.Dictionary(properties, signature="sv")
1428
1429
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1430
def PropertiesChanged(self, interface_name, changed_properties,
1431
invalidated_properties):
1432
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1433
standard.
1434
"""
1435
pass
1436
784
all[name] = type(value)(value, variant_level=
785
value.variant_level+1)
786
return dbus.Dictionary(all, signature="sv")
787
1437
788
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1438
789
out_signature="s",
1439
790
path_keyword='object_path',
1440
791
connection_keyword='connection')
1441
792
def Introspect(self, object_path, connection):
1442
"""Overloading of standard D-Bus method.
1443
1444
Inserts property tags and interface annotation tags.
793
"""Standard D-Bus method, overloaded to insert property tags.
1445
794
"""
1446
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1447
object_path,
1448
connection)
795
xmlstring = dbus.service.Object.Introspect(self, object_path,
796
connection)
1449
797
try:
1450
798
document = xml.dom.minidom.parseString(xmlstring)
1451
1452
799
def make_tag(document, name, prop):
1453
800
e = document.createElement("property")
1454
801
e.setAttribute("name", name)
1455
802
e.setAttribute("type", prop._dbus_signature)
1456
803
e.setAttribute("access", prop._dbus_access)
1457
804
return e
1458
1459
805
for if_tag in document.getElementsByTagName("interface"):
1460
# Add property tags
1461
806
for tag in (make_tag(document, name, prop)
1462
807
for name, prop
1463
in self._get_all_dbus_things("property")
808
in self._get_all_dbus_properties()
1464
809
if prop._dbus_interface
1465
810
== if_tag.getAttribute("name")):
1466
811
if_tag.appendChild(tag)
1467
# Add annotation tags for properties
1468
for tag in if_tag.getElementsByTagName("property"):
1469
annots = dict()
1470
for name, prop in self._get_all_dbus_things(
1471
"property"):
1472
if (name == tag.getAttribute("name")
1473
and prop._dbus_interface
1474
== if_tag.getAttribute("name")):
1475
annots.update(getattr(
1476
prop, "_dbus_annotations", {}))
1477
for name, value in annots.items():
1478
ann_tag = document.createElement(
1479
"annotation")
1480
ann_tag.setAttribute("name", name)
1481
ann_tag.setAttribute("value", value)
1482
tag.appendChild(ann_tag)
1483
812
# Add the names to the return values for the
1484
813
# "org.freedesktop.DBus.Properties" methods
1485
814
if (if_tag.getAttribute("name")
1500
829
except (AttributeError, xml.dom.DOMException,
1501
830
xml.parsers.expat.ExpatError) as error:
1502
831
logger.error("Failed to override Introspection method",
1503
exc_info=error)
1504
return xmlstring
1505
1506
1507
try:
1508
dbus.OBJECT_MANAGER_IFACE
1509
except AttributeError:
1510
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1511
1512
1513
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1514
"""A D-Bus object with an ObjectManager.
1515
1516
Classes inheriting from this exposes the standard
1517
GetManagedObjects call and the InterfacesAdded and
1518
InterfacesRemoved signals on the standard
1519
"org.freedesktop.DBus.ObjectManager" interface.
1520
1521
Note: No signals are sent automatically; they must be sent
1522
manually.
1523
"""
1524
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1525
out_signature="a{oa{sa{sv}}}")
1526
def GetManagedObjects(self):
1527
"""This function must be overridden"""
1528
raise NotImplementedError()
1529
1530
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1531
signature="oa{sa{sv}}")
1532
def InterfacesAdded(self, object_path, interfaces_and_properties):
1533
pass
1534
1535
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1536
def InterfacesRemoved(self, object_path, interfaces):
1537
pass
1538
1539
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1540
out_signature="s",
1541
path_keyword='object_path',
1542
connection_keyword='connection')
1543
def Introspect(self, object_path, connection):
1544
"""Overloading of standard D-Bus method.
1545
1546
Override return argument name of GetManagedObjects to be
1547
"objpath_interfaces_and_properties"
1548
"""
1549
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1550
object_path,
1551
connection)
1552
try:
1553
document = xml.dom.minidom.parseString(xmlstring)
1554
1555
for if_tag in document.getElementsByTagName("interface"):
1556
# Fix argument name for the GetManagedObjects method
1557
if (if_tag.getAttribute("name")
1558
== dbus.OBJECT_MANAGER_IFACE):
1559
for cn in if_tag.getElementsByTagName("method"):
1560
if (cn.getAttribute("name")
1561
== "GetManagedObjects"):
1562
for arg in cn.getElementsByTagName("arg"):
1563
if (arg.getAttribute("direction")
1564
== "out"):
1565
arg.setAttribute(
1566
"name",
1567
"objpath_interfaces"
1568
"_and_properties")
1569
xmlstring = document.toxml("utf-8")
1570
document.unlink()
1571
except (AttributeError, xml.dom.DOMException,
1572
xml.parsers.expat.ExpatError) as error:
1573
logger.error("Failed to override Introspection method",
1574
exc_info=error)
1575
return xmlstring
1576
1577
1578
def datetime_to_dbus(dt, variant_level=0):
832
error)
833
return xmlstring
834
835
836
def datetime_to_dbus (dt, variant_level=0):
1579
837
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1580
838
if dt is None:
1581
return dbus.String("", variant_level=variant_level)
1582
return dbus.String(dt.isoformat(), variant_level=variant_level)
1583
1584
1585
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1586
"""A class decorator; applied to a subclass of
1587
dbus.service.Object, it will add alternate D-Bus attributes with
1588
interface names according to the "alt_interface_names" mapping.
1589
Usage:
1590
1591
@alternate_dbus_interfaces({"org.example.Interface":
1592
"net.example.AlternateInterface"})
1593
class SampleDBusObject(dbus.service.Object):
1594
@dbus.service.method("org.example.Interface")
1595
def SampleDBusMethod():
1596
pass
1597
1598
The above "SampleDBusMethod" on "SampleDBusObject" will be
1599
reachable via two interfaces: "org.example.Interface" and
1600
"net.example.AlternateInterface", the latter of which will have
1601
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1602
"true", unless "deprecate" is passed with a False value.
1603
1604
This works for methods and signals, and also for D-Bus properties
1605
(from DBusObjectWithProperties) and interfaces (from the
1606
dbus_interface_annotations decorator).
839
return dbus.String("", variant_level = variant_level)
840
return dbus.String(dt.isoformat(),
841
variant_level=variant_level)
842
843
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
844
.__metaclass__):
845
"""Applied to an empty subclass of a D-Bus object, this metaclass
846
will add additional D-Bus attributes matching a certain pattern.
1607
847
"""
1608
1609
def wrapper(cls):
1610
for orig_interface_name, alt_interface_name in (
1611
alt_interface_names.items()):
1612
attr = {}
1613
interface_names = set()
1614
# Go though all attributes of the class
1615
for attrname, attribute in inspect.getmembers(cls):
848
def __new__(mcs, name, bases, attr):
849
# Go through all the base classes which could have D-Bus
850
# methods, signals, or properties in them
851
for base in (b for b in bases
852
if issubclass(b, dbus.service.Object)):
853
# Go though all attributes of the base class
854
for attrname, attribute in inspect.getmembers(base):
1616
855
# Ignore non-D-Bus attributes, and D-Bus attributes
1617
856
# with the wrong interface name
1618
857
if (not hasattr(attribute, "_dbus_interface")
1619
or not attribute._dbus_interface.startswith(
1620
orig_interface_name)):
858
or not attribute._dbus_interface
859
.startswith("se.recompile.Mandos")):
1621
860
continue
1622
861
# Create an alternate D-Bus interface name based on
1623
862
# the current name
1624
alt_interface = attribute._dbus_interface.replace(
1625
orig_interface_name, alt_interface_name)
1626
interface_names.add(alt_interface)
863
alt_interface = (attribute._dbus_interface
864
.replace("se.recompile.Mandos",
865
"se.bsnet.fukt.Mandos"))
1627
866
# Is this a D-Bus signal?
1628
867
if getattr(attribute, "_dbus_is_signal", False):
1629
# Extract the original non-method undecorated
1630
# function by black magic
1631
if sys.version_info.major == 2:
1632
nonmethod_func = (dict(
868
# Extract the original non-method function by
869
# black magic
870
nonmethod_func = (dict(
1633
871
zip(attribute.func_code.co_freevars,
1634
attribute.__closure__))
1635
["func"].cell_contents)
1636
else:
1637
nonmethod_func = (dict(
1638
zip(attribute.__code__.co_freevars,
1639
attribute.__closure__))
1640
["func"].cell_contents)
872
attribute.__closure__))["func"]
873
.cell_contents)
1641
874
# Create a new, but exactly alike, function
1642
875
# object, and decorate it to be a new D-Bus signal
1643
876
# with the alternate D-Bus interface name
1644
new_function = copy_function(nonmethod_func)
1645
new_function = (dbus.service.signal(
1646
alt_interface,
1647
attribute._dbus_signature)(new_function))
1648
# Copy annotations, if any
1649
try:
1650
new_function._dbus_annotations = dict(
1651
attribute._dbus_annotations)
1652
except AttributeError:
1653
pass
1654
877
new_function = (dbus.service.signal
878
(alt_interface,
879
attribute._dbus_signature)
880
(types.FunctionType(
881
nonmethod_func.func_code,
882
nonmethod_func.func_globals,
883
nonmethod_func.func_name,
884
nonmethod_func.func_defaults,
885
nonmethod_func.func_closure)))
1655
886
# Define a creator of a function to call both the
1656
# original and alternate functions, so both the
1657
# original and alternate signals gets sent when
1658
# the function is called
887
# old and new functions, so both the old and new
888
# signals gets sent when the function is called
1659
889
def fixscope(func1, func2):
1660
890
"""This function is a scope container to pass
1661
891
func1 and func2 to the "call_both" function
1662
892
outside of its arguments"""
1663
1664
@functools.wraps(func2)
1665
893
def call_both(*args, **kwargs):
1666
894
"""This function will emit two D-Bus
1667
895
signals by calling func1 and func2"""
1668
896
func1(*args, **kwargs)
1669
897
func2(*args, **kwargs)
1670
# Make wrapper function look like a D-Bus
1671
# signal
1672
for name, attr in inspect.getmembers(func2):
1673
if name.startswith("_dbus_"):
1674
setattr(call_both, name, attr)
1675
1676
898
return call_both
1677
899
# Create the "call_both" function and add it to
1678
900
# the class
1679
attr[attrname] = fixscope(attribute, new_function)
901
attr[attrname] = fixscope(attribute,
902
new_function)
1680
903
# Is this a D-Bus method?
1681
904
elif getattr(attribute, "_dbus_is_method", False):
1682
905
# Create a new, but exactly alike, function
1683
906
# object. Decorate it to be a new D-Bus method
1684
907
# with the alternate D-Bus interface name. Add it
1685
908
# to the class.
1686
attr[attrname] = (
1687
dbus.service.method(
1688
alt_interface,
1689
attribute._dbus_in_signature,
1690
attribute._dbus_out_signature)
1691
(copy_function(attribute)))
1692
# Copy annotations, if any
1693
try:
1694
attr[attrname]._dbus_annotations = dict(
1695
attribute._dbus_annotations)
1696
except AttributeError:
1697
pass
909
attr[attrname] = (dbus.service.method
910
(alt_interface,
911
attribute._dbus_in_signature,
912
attribute._dbus_out_signature)
913
(types.FunctionType
914
(attribute.func_code,
915
attribute.func_globals,
916
attribute.func_name,
917
attribute.func_defaults,
918
attribute.func_closure)))
1698
919
# Is this a D-Bus property?
1699
920
elif getattr(attribute, "_dbus_is_property", False):
1700
921
# Create a new, but exactly alike, function
1701
922
# object, and decorate it to be a new D-Bus
1702
923
# property with the alternate D-Bus interface
1703
924
# name. Add it to the class.
1704
attr[attrname] = (dbus_service_property(
1705
alt_interface, attribute._dbus_signature,
1706
attribute._dbus_access,
1707
attribute._dbus_get_args_options
1708
["byte_arrays"])
1709
(copy_function(attribute)))
1710
# Copy annotations, if any
1711
try:
1712
attr[attrname]._dbus_annotations = dict(
1713
attribute._dbus_annotations)
1714
except AttributeError:
1715
pass
1716
# Is this a D-Bus interface?
1717
elif getattr(attribute, "_dbus_is_interface", False):
1718
# Create a new, but exactly alike, function
1719
# object. Decorate it to be a new D-Bus interface
1720
# with the alternate D-Bus interface name. Add it
1721
# to the class.
1722
attr[attrname] = (
1723
dbus_interface_annotations(alt_interface)
1724
(copy_function(attribute)))
1725
if deprecate:
1726
# Deprecate all alternate interfaces
1727
iname = "_AlternateDBusNames_interface_annotation{}"
1728
for interface_name in interface_names:
1729
1730
@dbus_interface_annotations(interface_name)
1731
def func(self):
1732
return {"org.freedesktop.DBus.Deprecated":
1733
"true"}
1734
# Find an unused name
1735
for aname in (iname.format(i)
1736
for i in itertools.count()):
1737
if aname not in attr:
1738
attr[aname] = func
1739
break
1740
if interface_names:
1741
# Replace the class with a new subclass of it with
1742
# methods, signals, etc. as created above.
1743
if sys.version_info.major == 2:
1744
cls = type(b"{}Alternate".format(cls.__name__),
1745
(cls, ), attr)
1746
else:
1747
cls = type("{}Alternate".format(cls.__name__),
1748
(cls, ), attr)
1749
return cls
1750
1751
return wrapper
1752
1753
1754
@alternate_dbus_interfaces({"se.recompile.Mandos":
1755
"se.bsnet.fukt.Mandos"})
925
attr[attrname] = (dbus_service_property
926
(alt_interface,
927
attribute._dbus_signature,
928
attribute._dbus_access,
929
attribute
930
._dbus_get_args_options
931
["byte_arrays"])
932
(types.FunctionType
933
(attribute.func_code,
934
attribute.func_globals,
935
attribute.func_name,
936
attribute.func_defaults,
937
attribute.func_closure)))
938
return type.__new__(mcs, name, bases, attr)
939
1756
940
class ClientDBus(Client, DBusObjectWithProperties):
1757
941
"""A Client class using D-Bus
1758
942
1759
943
Attributes:
1760
944
dbus_object_path: dbus.ObjectPath
1761
945
bus: dbus.SystemBus()
1762
946
"""
1763
947
1764
948
runtime_expansions = (Client.runtime_expansions
1765
+ ("dbus_object_path", ))
1766
1767
_interface = "se.recompile.Mandos.Client"
1768
949
+ ("dbus_object_path",))
950
1769
951
# dbus.service.Object doesn't use super(), so we can't either.
1770
1771
def __init__(self, bus=None, *args, **kwargs):
952
953
def __init__(self, bus = None, *args, **kwargs):
1772
954
self.bus = bus
955
self._approvals_pending = 0
1773
956
Client.__init__(self, *args, **kwargs)
957
self.add_to_dbus()
958
959
def add_to_dbus(self):
1774
960
# Only now, when this client is initialized, can it show up on
1775
961
# the D-Bus
1776
client_object_name = str(self.name).translate(
962
client_object_name = unicode(self.name).translate(
1777
963
{ord("."): ord("_"),
1778
964
ord("-"): ord("_")})
1779
self.dbus_object_path = dbus.ObjectPath(
1780
"/clients/" + client_object_name)
965
self.dbus_object_path = (dbus.ObjectPath
966
("/clients/" + client_object_name))
1781
967
DBusObjectWithProperties.__init__(self, self.bus,
1782
968
self.dbus_object_path)
1783
1784
def notifychangeproperty(transform_func, dbus_name,
1785
type_func=lambda x: x,
1786
variant_level=1,
1787
invalidate_only=False,
1788
_interface=_interface):
969
970
def notifychangeproperty(transform_func,
971
dbus_name, type_func=lambda x: x,
972
variant_level=1):
1789
973
""" Modify a variable so that it's a property which announces
1790
974
its changes to DBus.
1791
975
1796
980
to the D-Bus. Default: no transform
1797
981
variant_level: D-Bus variant level. Default: 1
1798
982
"""
1799
attrname = "_{}".format(dbus_name)
1800
983
attrname = "_{0}".format(dbus_name)
1801
984
def setter(self, value):
1802
985
if hasattr(self, "dbus_object_path"):
1803
986
if (not hasattr(self, attrname) or
1804
987
type_func(getattr(self, attrname, None))
1805
988
!= type_func(value)):
1806
if invalidate_only:
1807
self.PropertiesChanged(
1808
_interface, dbus.Dictionary(),
1809
dbus.Array((dbus_name, )))
1810
else:
1811
dbus_value = transform_func(
1812
type_func(value),
1813
variant_level=variant_level)
1814
self.PropertyChanged(dbus.String(dbus_name),
1815
dbus_value)
1816
self.PropertiesChanged(
1817
_interface,
1818
dbus.Dictionary({dbus.String(dbus_name):
1819
dbus_value}),
1820
dbus.Array())
989
dbus_value = transform_func(type_func(value),
990
variant_level
991
=variant_level)
992
self.PropertyChanged(dbus.String(dbus_name),
993
dbus_value)
1821
994
setattr(self, attrname, value)
1822
995
1823
996
return property(lambda self: getattr(self, attrname), setter)
1824
997
998
1825
999
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1826
1000
approvals_pending = notifychangeproperty(dbus.Boolean,
1827
1001
"ApprovalPending",
1828
type_func=bool)
1002
type_func = bool)
1829
1003
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1830
1004
last_enabled = notifychangeproperty(datetime_to_dbus,
1831
1005
"LastEnabled")
1832
checker = notifychangeproperty(
1833
dbus.Boolean, "CheckerRunning",
1834
type_func=lambda checker: checker is not None)
1006
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1007
type_func = lambda checker:
1008
checker is not None)
1835
1009
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1836
1010
"LastCheckedOK")
1837
last_checker_status = notifychangeproperty(dbus.Int16,
1838
"LastCheckerStatus")
1839
1011
last_approval_request = notifychangeproperty(
1840
1012
datetime_to_dbus, "LastApprovalRequest")
1841
1013
approved_by_default = notifychangeproperty(dbus.Boolean,
1842
1014
"ApprovedByDefault")
1843
approval_delay = notifychangeproperty(
1844
dbus.UInt64, "ApprovalDelay",
1845
type_func=lambda td: td.total_seconds() * 1000)
1015
approval_delay = notifychangeproperty(dbus.UInt16,
1016
"ApprovalDelay",
1017
type_func =
1018
_timedelta_to_milliseconds)
1846
1019
approval_duration = notifychangeproperty(
1847
dbus.UInt64, "ApprovalDuration",
1848
type_func=lambda td: td.total_seconds() * 1000)
1020
dbus.UInt16, "ApprovalDuration",
1021
type_func = _timedelta_to_milliseconds)
1849
1022
host = notifychangeproperty(dbus.String, "Host")
1850
timeout = notifychangeproperty(
1851
dbus.UInt64, "Timeout",
1852
type_func=lambda td: td.total_seconds() * 1000)
1023
timeout = notifychangeproperty(dbus.UInt16, "Timeout",
1024
type_func =
1025
_timedelta_to_milliseconds)
1853
1026
extended_timeout = notifychangeproperty(
1854
dbus.UInt64, "ExtendedTimeout",
1855
type_func=lambda td: td.total_seconds() * 1000)
1856
interval = notifychangeproperty(
1857
dbus.UInt64, "Interval",
1858
type_func=lambda td: td.total_seconds() * 1000)
1027
dbus.UInt16, "ExtendedTimeout",
1028
type_func = _timedelta_to_milliseconds)
1029
interval = notifychangeproperty(dbus.UInt16,
1030
"Interval",
1031
type_func =
1032
_timedelta_to_milliseconds)
1859
1033
checker_command = notifychangeproperty(dbus.String, "Checker")
1860
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1861
invalidate_only=True)
1862
1034
1863
1035
del notifychangeproperty
1864
1036
1865
1037
def __del__(self, *args, **kwargs):
1866
1038
try:
1867
1039
self.remove_from_connection()
1870
1042
if hasattr(DBusObjectWithProperties, "__del__"):
1871
1043
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1872
1044
Client.__del__(self, *args, **kwargs)
1873
1874
def checker_callback(self, source, condition,
1875
connection, command, *args, **kwargs):
1876
ret = Client.checker_callback(self, source, condition,
1877
connection, command, *args,
1878
**kwargs)
1879
exitstatus = self.last_checker_status
1880
if exitstatus >= 0:
1045
1046
def checker_callback(self, pid, condition, command,
1047
*args, **kwargs):
1048
self.checker_callback_tag = None
1049
self.checker = None
1050
if os.WIFEXITED(condition):
1051
exitstatus = os.WEXITSTATUS(condition)
1881
1052
# Emit D-Bus signal
1882
1053
self.CheckerCompleted(dbus.Int16(exitstatus),
1883
# This is specific to GNU libC
1884
dbus.Int64(exitstatus << 8),
1054
dbus.Int64(condition),
1885
1055
dbus.String(command))
1886
1056
else:
1887
1057
# Emit D-Bus signal
1888
1058
self.CheckerCompleted(dbus.Int16(-1),
1889
dbus.Int64(
1890
# This is specific to GNU libC
1891
(exitstatus << 8)
1892
| self.last_checker_signal),
1059
dbus.Int64(condition),
1893
1060
dbus.String(command))
1894
return ret
1895
1061
1062
return Client.checker_callback(self, pid, condition, command,
1063
*args, **kwargs)
1064
1896
1065
def start_checker(self, *args, **kwargs):
1897
old_checker_pid = getattr(self.checker, "pid", None)
1066
old_checker = self.checker
1067
if self.checker is not None:
1068
old_checker_pid = self.checker.pid
1069
else:
1070
old_checker_pid = None
1898
1071
r = Client.start_checker(self, *args, **kwargs)
1899
1072
# Only if new checker process was started
1900
1073
if (self.checker is not None
1902
1075
# Emit D-Bus signal
1903
1076
self.CheckerStarted(self.current_checker_command)
1904
1077
return r
1905
1078
1906
1079
def _reset_approved(self):
1907
self.approved = None
1080
self._approved = None
1908
1081
return False
1909
1082
1910
1083
def approve(self, value=True):
1911
self.approved = value
1912
GLib.timeout_add(int(self.approval_duration.total_seconds()
1913
* 1000), self._reset_approved)
1914
1084
self.send_changedstate()
1915
1916
# D-Bus methods, signals & properties
1917
1918
# Interfaces
1919
1920
# Signals
1921
1085
self._approved = value
1086
gobject.timeout_add(_timedelta_to_milliseconds
1087
(self.approval_duration),
1088
self._reset_approved)
1089
1090
1091
## D-Bus methods, signals & properties
1092
_interface = "se.recompile.Mandos.Client"
1093
1094
## Signals
1095
1922
1096
# CheckerCompleted - signal
1923
1097
@dbus.service.signal(_interface, signature="nxs")
1924
1098
def CheckerCompleted(self, exitcode, waitstatus, command):
1925
1099
"D-Bus signal"
1926
1100
pass
1927
1101
1928
1102
# CheckerStarted - signal
1929
1103
@dbus.service.signal(_interface, signature="s")
1930
1104
def CheckerStarted(self, command):
1931
1105
"D-Bus signal"
1932
1106
pass
1933
1107
1934
1108
# PropertyChanged - signal
1935
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1936
1109
@dbus.service.signal(_interface, signature="sv")
1937
1110
def PropertyChanged(self, property, value):
1938
1111
"D-Bus signal"
1939
1112
pass
1940
1113
1941
1114
# GotSecret - signal
1942
1115
@dbus.service.signal(_interface)
1943
1116
def GotSecret(self):
1946
1119
server to mandos-client
1947
1120
"""
1948
1121
pass
1949
1122
1950
1123
# Rejected - signal
1951
1124
@dbus.service.signal(_interface, signature="s")
1952
1125
def Rejected(self, reason):
1953
1126
"D-Bus signal"
1954
1127
pass
1955
1128
1956
1129
# NeedApproval - signal
1957
1130
@dbus.service.signal(_interface, signature="tb")
1958
1131
def NeedApproval(self, timeout, default):
1959
1132
"D-Bus signal"
1960
1133
return self.need_approval()
1961
1962
# Methods
1963
1134
1135
## Methods
1136
1964
1137
# Approve - method
1965
1138
@dbus.service.method(_interface, in_signature="b")
1966
1139
def Approve(self, value):
1967
1140
self.approve(value)
1968
1141
1969
1142
# CheckedOK - method
1970
1143
@dbus.service.method(_interface)
1971
1144
def CheckedOK(self):
1972
1145
self.checked_ok()
1973
1146
1974
1147
# Enable - method
1975
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1976
1148
@dbus.service.method(_interface)
1977
1149
def Enable(self):
1978
1150
"D-Bus method"
1979
1151
self.enable()
1980
1152
1981
1153
# StartChecker - method
1982
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1983
1154
@dbus.service.method(_interface)
1984
1155
def StartChecker(self):
1985
1156
"D-Bus method"
1986
1157
self.start_checker()
1987
1158
1988
1159
# Disable - method
1989
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1990
1160
@dbus.service.method(_interface)
1991
1161
def Disable(self):
1992
1162
"D-Bus method"
1993
1163
self.disable()
1994
1164
1995
1165
# StopChecker - method
1996
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1997
1166
@dbus.service.method(_interface)
1998
1167
def StopChecker(self):
1999
1168
self.stop_checker()
2000
2001
# Properties
2002
1169
1170
## Properties
1171
2003
1172
# ApprovalPending - property
2004
1173
@dbus_service_property(_interface, signature="b", access="read")
2005
1174
def ApprovalPending_dbus_property(self):
2006
1175
return dbus.Boolean(bool(self.approvals_pending))
2007
1176
2008
1177
# ApprovedByDefault - property
2009
@dbus_service_property(_interface,
2010
signature="b",
1178
@dbus_service_property(_interface, signature="b",
2011
1179
access="readwrite")
2012
1180
def ApprovedByDefault_dbus_property(self, value=None):
2013
1181
if value is None: # get
2014
1182
return dbus.Boolean(self.approved_by_default)
2015
1183
self.approved_by_default = bool(value)
2016
1184
2017
1185
# ApprovalDelay - property
2018
@dbus_service_property(_interface,
2019
signature="t",
1186
@dbus_service_property(_interface, signature="t",
2020
1187
access="readwrite")
2021
1188
def ApprovalDelay_dbus_property(self, value=None):
2022
1189
if value is None: # get
2023
return dbus.UInt64(self.approval_delay.total_seconds()
2024
* 1000)
1190
return dbus.UInt64(self.approval_delay_milliseconds())
2025
1191
self.approval_delay = datetime.timedelta(0, 0, 0, value)
2026
1192
2027
1193
# ApprovalDuration - property
2028
@dbus_service_property(_interface,
2029
signature="t",
1194
@dbus_service_property(_interface, signature="t",
2030
1195
access="readwrite")
2031
1196
def ApprovalDuration_dbus_property(self, value=None):
2032
1197
if value is None: # get
2033
return dbus.UInt64(self.approval_duration.total_seconds()
2034
* 1000)
1198
return dbus.UInt64(_timedelta_to_milliseconds(
1199
self.approval_duration))
2035
1200
self.approval_duration = datetime.timedelta(0, 0, 0, value)
2036
1201
2037
1202
# Name - property
2038
@dbus_annotations(
2039
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2040
1203
@dbus_service_property(_interface, signature="s", access="read")
2041
1204
def Name_dbus_property(self):
2042
1205
return dbus.String(self.name)
2043
2044
# KeyID - property
2045
@dbus_annotations(
2046
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2047
@dbus_service_property(_interface, signature="s", access="read")
2048
def KeyID_dbus_property(self):
2049
return dbus.String(self.key_id)
2050
1206
2051
1207
# Fingerprint - property
2052
@dbus_annotations(
2053
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2054
1208
@dbus_service_property(_interface, signature="s", access="read")
2055
1209
def Fingerprint_dbus_property(self):
2056
1210
return dbus.String(self.fingerprint)
2057
1211
2058
1212
# Host - property
2059
@dbus_service_property(_interface,
2060
signature="s",
1213
@dbus_service_property(_interface, signature="s",
2061
1214
access="readwrite")
2062
1215
def Host_dbus_property(self, value=None):
2063
1216
if value is None: # get
2064
1217
return dbus.String(self.host)
2065
self.host = str(value)
2066
1218
self.host = value
1219
2067
1220
# Created - property
2068
@dbus_annotations(
2069
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2070
1221
@dbus_service_property(_interface, signature="s", access="read")
2071
1222
def Created_dbus_property(self):
2072
return datetime_to_dbus(self.created)
2073
1223
return dbus.String(datetime_to_dbus(self.created))
1224
2074
1225
# LastEnabled - property
2075
1226
@dbus_service_property(_interface, signature="s", access="read")
2076
1227
def LastEnabled_dbus_property(self):
2077
1228
return datetime_to_dbus(self.last_enabled)
2078
1229
2079
1230
# Enabled - property
2080
@dbus_service_property(_interface,
2081
signature="b",
1231
@dbus_service_property(_interface, signature="b",
2082
1232
access="readwrite")
2083
1233
def Enabled_dbus_property(self, value=None):
2084
1234
if value is None: # get
2087
1237
self.enable()
2088
1238
else:
2089
1239
self.disable()
2090
1240
2091
1241
# LastCheckedOK - property
2092
@dbus_service_property(_interface,
2093
signature="s",
1242
@dbus_service_property(_interface, signature="s",
2094
1243
access="readwrite")
2095
1244
def LastCheckedOK_dbus_property(self, value=None):
2096
1245
if value is not None:
2097
1246
self.checked_ok()
2098
1247
return
2099
1248
return datetime_to_dbus(self.last_checked_ok)
2100
2101
# LastCheckerStatus - property
2102
@dbus_service_property(_interface, signature="n", access="read")
2103
def LastCheckerStatus_dbus_property(self):
2104
return dbus.Int16(self.last_checker_status)
2105
1249
2106
1250
# Expires - property
2107
1251
@dbus_service_property(_interface, signature="s", access="read")
2108
1252
def Expires_dbus_property(self):
2109
1253
return datetime_to_dbus(self.expires)
2110
1254
2111
1255
# LastApprovalRequest - property
2112
1256
@dbus_service_property(_interface, signature="s", access="read")
2113
1257
def LastApprovalRequest_dbus_property(self):
2114
1258
return datetime_to_dbus(self.last_approval_request)
2115
1259
2116
1260
# Timeout - property
2117
@dbus_service_property(_interface,
2118
signature="t",
1261
@dbus_service_property(_interface, signature="t",
2119
1262
access="readwrite")
2120
1263
def Timeout_dbus_property(self, value=None):
2121
1264
if value is None: # get
2122
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2123
old_timeout = self.timeout
1265
return dbus.UInt64(self.timeout_milliseconds())
2124
1266
self.timeout = datetime.timedelta(0, 0, 0, value)
2125
# Reschedule disabling
2126
if self.enabled:
2127
now = datetime.datetime.utcnow()
2128
self.expires += self.timeout - old_timeout
2129
if self.expires <= now:
2130
# The timeout has passed
2131
self.disable()
2132
else:
2133
if (getattr(self, "disable_initiator_tag", None)
2134
is None):
2135
return
2136
GLib.source_remove(self.disable_initiator_tag)
2137
self.disable_initiator_tag = GLib.timeout_add(
2138
int((self.expires - now).total_seconds() * 1000),
2139
self.disable)
2140
1267
if getattr(self, "disable_initiator_tag", None) is None:
1268
return
1269
# Reschedule timeout
1270
gobject.source_remove(self.disable_initiator_tag)
1271
self.disable_initiator_tag = None
1272
self.expires = None
1273
time_to_die = _timedelta_to_milliseconds((self
1274
.last_checked_ok
1275
+ self.timeout)
1276
- datetime.datetime
1277
.utcnow())
1278
if time_to_die <= 0:
1279
# The timeout has passed
1280
self.disable()
1281
else:
1282
self.expires = (datetime.datetime.utcnow()
1283
+ datetime.timedelta(milliseconds =
1284
time_to_die))
1285
self.disable_initiator_tag = (gobject.timeout_add
1286
(time_to_die, self.disable))
1287
2141
1288
# ExtendedTimeout - property
2142
@dbus_service_property(_interface,
2143
signature="t",
1289
@dbus_service_property(_interface, signature="t",
2144
1290
access="readwrite")
2145
1291
def ExtendedTimeout_dbus_property(self, value=None):
2146
1292
if value is None: # get
2147
return dbus.UInt64(self.extended_timeout.total_seconds()
2148
* 1000)
1293
return dbus.UInt64(self.extended_timeout_milliseconds())
2149
1294
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2150
1295
2151
1296
# Interval - property
2152
@dbus_service_property(_interface,
2153
signature="t",
1297
@dbus_service_property(_interface, signature="t",
2154
1298
access="readwrite")
2155
1299
def Interval_dbus_property(self, value=None):
2156
1300
if value is None: # get
2157
return dbus.UInt64(self.interval.total_seconds() * 1000)
1301
return dbus.UInt64(self.interval_milliseconds())
2158
1302
self.interval = datetime.timedelta(0, 0, 0, value)
2159
1303
if getattr(self, "checker_initiator_tag", None) is None:
2160
1304
return
2161
if self.enabled:
2162
# Reschedule checker run
2163
GLib.source_remove(self.checker_initiator_tag)
2164
self.checker_initiator_tag = GLib.timeout_add(
2165
value, self.start_checker)
2166
self.start_checker() # Start one now, too
2167
1305
# Reschedule checker run
1306
gobject.source_remove(self.checker_initiator_tag)
1307
self.checker_initiator_tag = (gobject.timeout_add
1308
(value, self.start_checker))
1309
self.start_checker() # Start one now, too
1310
2168
1311
# Checker - property
2169
@dbus_service_property(_interface,
2170
signature="s",
1312
@dbus_service_property(_interface, signature="s",
2171
1313
access="readwrite")
2172
1314
def Checker_dbus_property(self, value=None):
2173
1315
if value is None: # get
2174
1316
return dbus.String(self.checker_command)
2175
self.checker_command = str(value)
2176
1317
self.checker_command = value
1318
2177
1319
# CheckerRunning - property
2178
@dbus_service_property(_interface,
2179
signature="b",
1320
@dbus_service_property(_interface, signature="b",
2180
1321
access="readwrite")
2181
1322
def CheckerRunning_dbus_property(self, value=None):
2182
1323
if value is None: # get
2185
1326
self.start_checker()
2186
1327
else:
2187
1328
self.stop_checker()
2188
1329
2189
1330
# ObjectPath - property
2190
@dbus_annotations(
2191
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2192
"org.freedesktop.DBus.Deprecated": "true"})
2193
1331
@dbus_service_property(_interface, signature="o", access="read")
2194
1332
def ObjectPath_dbus_property(self):
2195
return self.dbus_object_path # is already a dbus.ObjectPath
2196
1333
return self.dbus_object_path # is already a dbus.ObjectPath
1334
2197
1335
# Secret = property
2198
@dbus_annotations(
2199
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2200
"invalidates"})
2201
@dbus_service_property(_interface,
2202
signature="ay",
2203
access="write",
2204
byte_arrays=True)
1336
@dbus_service_property(_interface, signature="ay",
1337
access="write", byte_arrays=True)
2205
1338
def Secret_dbus_property(self, value):
2206
self.secret = bytes(value)
2207
1339
self.secret = str(value)
1340
2208
1341
del _interface
2209
1342
2210
1343
2211
1344
class ProxyClient(object):
2212
def __init__(self, child_pipe, key_id, fpr, address):
1345
def __init__(self, child_pipe, fpr, address):
2213
1346
self._pipe = child_pipe
2214
self._pipe.send(('init', key_id, fpr, address))
1347
self._pipe.send(('init', fpr, address))
2215
1348
if not self._pipe.recv():
2216
raise KeyError(key_id or fpr)
2217
1349
raise KeyError()
1350
2218
1351
def __getattribute__(self, name):
2219
if name == '_pipe':
1352
if(name == '_pipe'):
2220
1353
return super(ProxyClient, self).__getattribute__(name)
2221
1354
self._pipe.send(('getattr', name))
2222
1355
data = self._pipe.recv()
2223
1356
if data[0] == 'data':
2224
1357
return data[1]
2225
1358
if data[0] == 'function':
2226
2227
1359
def func(*args, **kwargs):
2228
1360
self._pipe.send(('funcall', name, args, kwargs))
2229
1361
return self._pipe.recv()[1]
2230
2231
1362
return func
2232
1363
2233
1364
def __setattr__(self, name, value):
2234
if name == '_pipe':
1365
if(name == '_pipe'):
2235
1366
return super(ProxyClient, self).__setattr__(name, value)
2236
1367
self._pipe.send(('setattr', name, value))
2237
1368
1369
class ClientDBusTransitional(ClientDBus):
1370
__metaclass__ = AlternateDBusNamesMetaclass
2238
1371
2239
1372
class ClientHandler(socketserver.BaseRequestHandler, object):
2240
1373
"""A class to handle client connections.
2241
1374
2242
1375
Instantiated once for each connection to handle it.
2243
1376
Note: This will run in its own forked process."""
2244
1377
2245
1378
def handle(self):
2246
1379
with contextlib.closing(self.server.child_pipe) as child_pipe:
2247
1380
logger.info("TCP connection from: %s",
2248
str(self.client_address))
1381
unicode(self.client_address))
2249
1382
logger.debug("Pipe FD: %d",
2250
1383
self.server.child_pipe.fileno())
2251
2252
session = gnutls.ClientSession(self.request)
2253
2254
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2255
# "+AES-256-CBC", "+SHA1",
2256
# "+COMP-NULL", "+CTYPE-OPENPGP",
2257
# "+DHE-DSS"))
1384
1385
session = (gnutls.connection
1386
.ClientSession(self.request,
1387
gnutls.connection
1388
.X509Credentials()))
1389
1390
# Note: gnutls.connection.X509Credentials is really a
1391
# generic GnuTLS certificate credentials object so long as
1392
# no X.509 keys are added to it. Therefore, we can use it
1393
# here despite using OpenPGP certificates.
1394
1395
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1396
# "+AES-256-CBC", "+SHA1",
1397
# "+COMP-NULL", "+CTYPE-OPENPGP",
1398
# "+DHE-DSS"))
2258
1399
# Use a fallback default, since this MUST be set.
2259
1400
priority = self.server.gnutls_priority
2260
1401
if priority is None:
2261
1402
priority = "NORMAL"
2262
gnutls.priority_set_direct(session._c_object,
2263
priority.encode("utf-8"),
2264
None)
2265
1403
(gnutls.library.functions
1404
.gnutls_priority_set_direct(session._c_object,
1405
priority, None))
1406
2266
1407
# Start communication using the Mandos protocol
2267
1408
# Get protocol number
2268
1409
line = self.request.makefile().readline()
2269
1410
logger.debug("Protocol version: %r", line)
2270
1411
try:
2271
1412
if int(line.strip().split()[0]) > 1:
2272
raise RuntimeError(line)
1413
raise RuntimeError
2273
1414
except (ValueError, IndexError, RuntimeError) as error:
2274
1415
logger.error("Unknown protocol version: %s", error)
2275
1416
return
2276
1417
2277
1418
# Start GnuTLS connection
2278
1419
try:
2279
1420
session.handshake()
2280
except gnutls.Error as error:
1421
except gnutls.errors.GNUTLSError as error:
2281
1422
logger.warning("Handshake failed: %s", error)
2282
1423
# Do not run session.bye() here: the session is not
2283
1424
# established. Just abandon the request.
2284
1425
return
2285
1426
logger.debug("Handshake succeeded")
2286
1427
2287
1428
approval_required = False
2288
1429
try:
2289
if gnutls.has_rawpk:
2290
fpr = ""
2291
try:
2292
key_id = self.key_id(
2293
self.peer_certificate(session))
2294
except (TypeError, gnutls.Error) as error:
2295
logger.warning("Bad certificate: %s", error)
2296
return
2297
logger.debug("Key ID: %s", key_id)
2298
2299
else:
2300
key_id = ""
2301
try:
2302
fpr = self.fingerprint(
2303
self.peer_certificate(session))
2304
except (TypeError, gnutls.Error) as error:
2305
logger.warning("Bad certificate: %s", error)
2306
return
2307
logger.debug("Fingerprint: %s", fpr)
2308
2309
try:
2310
client = ProxyClient(child_pipe, key_id, fpr,
1430
try:
1431
fpr = self.fingerprint(self.peer_certificate
1432
(session))
1433
except (TypeError,
1434
gnutls.errors.GNUTLSError) as error:
1435
logger.warning("Bad certificate: %s", error)
1436
return
1437
logger.debug("Fingerprint: %s", fpr)
1438
1439
try:
1440
client = ProxyClient(child_pipe, fpr,
2311
1441
self.client_address)
2312
1442
except KeyError:
2313
1443
return
2314
1444
2315
1445
if client.approval_delay:
2316
1446
delay = client.approval_delay
2317
1447
client.approvals_pending += 1
2318
1448
approval_required = True
2319
1449
2320
1450
while True:
2321
1451
if not client.enabled:
2322
1452
logger.info("Client %s is disabled",
2323
client.name)
1453
client.name)
2324
1454
if self.server.use_dbus:
2325
1455
# Emit D-Bus signal
2326
1456
client.Rejected("Disabled")
2327
1457
return
2328
2329
if client.approved or not client.approval_delay:
2330
# We are approved or approval is disabled
1458
1459
if client._approved or not client.approval_delay:
1460
#We are approved or approval is disabled
2331
1461
break
2332
elif client.approved is None:
1462
elif client._approved is None:
2333
1463
logger.info("Client %s needs approval",
2334
1464
client.name)
2335
1465
if self.server.use_dbus:
2336
1466
# Emit D-Bus signal
2337
1467
client.NeedApproval(
2338
client.approval_delay.total_seconds()
2339
* 1000, client.approved_by_default)
1468
client.approval_delay_milliseconds(),
1469
client.approved_by_default)
2340
1470
else:
2341
1471
logger.warning("Client %s was not approved",
2342
1472
client.name)
2344
1474
# Emit D-Bus signal
2345
1475
client.Rejected("Denied")
2346
1476
return
2347
2348
# wait until timeout or approved
1477
1478
#wait until timeout or approved
2349
1479
time = datetime.datetime.now()
2350
1480
client.changedstate.acquire()
2351
client.changedstate.wait(delay.total_seconds())
1481
(client.changedstate.wait
1482
(float(client._timedelta_to_milliseconds(delay)
1483
/ 1000)))
2352
1484
client.changedstate.release()
2353
1485
time2 = datetime.datetime.now()
2354
1486
if (time2 - time) >= delay:
2364
1496
break
2365
1497
else:
2366
1498
delay -= time2 - time
2367
2368
try:
2369
session.send(client.secret)
2370
except gnutls.Error as error:
2371
logger.warning("gnutls send failed",
2372
exc_info=error)
2373
return
2374
1499
1500
sent_size = 0
1501
while sent_size < len(client.secret):
1502
try:
1503
sent = session.send(client.secret[sent_size:])
1504
except gnutls.errors.GNUTLSError as error:
1505
logger.warning("gnutls send failed")
1506
return
1507
logger.debug("Sent: %d, remaining: %d",
1508
sent, len(client.secret)
1509
- (sent_size + sent))
1510
sent_size += sent
1511
2375
1512
logger.info("Sending secret to %s", client.name)
2376
1513
# bump the timeout using extended_timeout
2377
client.bump_timeout(client.extended_timeout)
1514
client.checked_ok(client.extended_timeout)
2378
1515
if self.server.use_dbus:
2379
1516
# Emit D-Bus signal
2380
1517
client.GotSecret()
2381
1518
2382
1519
finally:
2383
1520
if approval_required:
2384
1521
client.approvals_pending -= 1
2385
1522
try:
2386
1523
session.bye()
2387
except gnutls.Error as error:
2388
logger.warning("GnuTLS bye failed",
2389
exc_info=error)
2390
1524
except gnutls.errors.GNUTLSError as error:
1525
logger.warning("GnuTLS bye failed")
1526
2391
1527
@staticmethod
2392
1528
def peer_certificate(session):
2393
"Return the peer's certificate as a bytestring"
2394
try:
2395
cert_type = gnutls.certificate_type_get2(session._c_object,
2396
gnutls.CTYPE_PEERS)
2397
except AttributeError:
2398
cert_type = gnutls.certificate_type_get(session._c_object)
2399
if gnutls.has_rawpk:
2400
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2401
else:
2402
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2403
# If not a valid certificate type...
2404
if cert_type not in valid_cert_types:
2405
logger.info("Cert type %r not in %r", cert_type,
2406
valid_cert_types)
2407
# ...return invalid data
2408
return b""
1529
"Return the peer's OpenPGP certificate as a bytestring"
1530
# If not an OpenPGP certificate...
1531
if (gnutls.library.functions
1532
.gnutls_certificate_type_get(session._c_object)
1533
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1534
# ...do the normal thing
1535
return session.peer_certificate
2409
1536
list_size = ctypes.c_uint(1)
2410
cert_list = (gnutls.certificate_get_peers
1537
cert_list = (gnutls.library.functions
1538
.gnutls_certificate_get_peers
2411
1539
(session._c_object, ctypes.byref(list_size)))
2412
1540
if not bool(cert_list) and list_size.value != 0:
2413
raise gnutls.Error("error getting peer certificate")
1541
raise gnutls.errors.GNUTLSError("error getting peer"
1542
" certificate")
2414
1543
if list_size.value == 0:
2415
1544
return None
2416
1545
cert = cert_list[0]
2417
1546
return ctypes.string_at(cert.data, cert.size)
2418
2419
@staticmethod
2420
def key_id(certificate):
2421
"Convert a certificate bytestring to a hexdigit key ID"
2422
# New GnuTLS "datum" with the public key
2423
datum = gnutls.datum_t(
2424
ctypes.cast(ctypes.c_char_p(certificate),
2425
ctypes.POINTER(ctypes.c_ubyte)),
2426
ctypes.c_uint(len(certificate)))
2427
# XXX all these need to be created in the gnutls "module"
2428
# New empty GnuTLS certificate
2429
pubkey = gnutls.pubkey_t()
2430
gnutls.pubkey_init(ctypes.byref(pubkey))
2431
# Import the raw public key into the certificate
2432
gnutls.pubkey_import(pubkey,
2433
ctypes.byref(datum),
2434
gnutls.X509_FMT_DER)
2435
# New buffer for the key ID
2436
buf = ctypes.create_string_buffer(32)
2437
buf_len = ctypes.c_size_t(len(buf))
2438
# Get the key ID from the raw public key into the buffer
2439
gnutls.pubkey_get_key_id(pubkey,
2440
gnutls.KEYID_USE_SHA256,
2441
ctypes.cast(ctypes.byref(buf),
2442
ctypes.POINTER(ctypes.c_ubyte)),
2443
ctypes.byref(buf_len))
2444
# Deinit the certificate
2445
gnutls.pubkey_deinit(pubkey)
2446
2447
# Convert the buffer to a Python bytestring
2448
key_id = ctypes.string_at(buf, buf_len.value)
2449
# Convert the bytestring to hexadecimal notation
2450
hex_key_id = binascii.hexlify(key_id).upper()
2451
return hex_key_id
2452
1547
2453
1548
@staticmethod
2454
1549
def fingerprint(openpgp):
2455
1550
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2456
1551
# New GnuTLS "datum" with the OpenPGP public key
2457
datum = gnutls.datum_t(
2458
ctypes.cast(ctypes.c_char_p(openpgp),
2459
ctypes.POINTER(ctypes.c_ubyte)),
2460
ctypes.c_uint(len(openpgp)))
1552
datum = (gnutls.library.types
1553
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1554
ctypes.POINTER
1555
(ctypes.c_ubyte)),
1556
ctypes.c_uint(len(openpgp))))
2461
1557
# New empty GnuTLS certificate
2462
crt = gnutls.openpgp_crt_t()
2463
gnutls.openpgp_crt_init(ctypes.byref(crt))
1558
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1559
(gnutls.library.functions
1560
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2464
1561
# Import the OpenPGP public key into the certificate
2465
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2466
gnutls.OPENPGP_FMT_RAW)
1562
(gnutls.library.functions
1563
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1564
gnutls.library.constants
1565
.GNUTLS_OPENPGP_FMT_RAW))
2467
1566
# Verify the self signature in the key
2468
1567
crtverify = ctypes.c_uint()
2469
gnutls.openpgp_crt_verify_self(crt, 0,
2470
ctypes.byref(crtverify))
1568
(gnutls.library.functions
1569
.gnutls_openpgp_crt_verify_self(crt, 0,
1570
ctypes.byref(crtverify)))
2471
1571
if crtverify.value != 0:
2472
gnutls.openpgp_crt_deinit(crt)
2473
raise gnutls.CertificateSecurityError(code
2474
=crtverify.value)
1572
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1573
raise (gnutls.errors.CertificateSecurityError
1574
("Verify failed"))
2475
1575
# New buffer for the fingerprint
2476
1576
buf = ctypes.create_string_buffer(20)
2477
1577
buf_len = ctypes.c_size_t()
2478
1578
# Get the fingerprint from the certificate into the buffer
2479
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2480
ctypes.byref(buf_len))
1579
(gnutls.library.functions
1580
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1581
ctypes.byref(buf_len)))
2481
1582
# Deinit the certificate
2482
gnutls.openpgp_crt_deinit(crt)
1583
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2483
1584
# Convert the buffer to a Python bytestring
2484
1585
fpr = ctypes.string_at(buf, buf_len.value)
2485
1586
# Convert the bytestring to hexadecimal notation
2486
hex_fpr = binascii.hexlify(fpr).upper()
1587
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
2487
1588
return hex_fpr
2488
1589
2489
1590
2490
1591
class MultiprocessingMixIn(object):
2491
1592
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2492
2493
1593
def sub_process_main(self, request, address):
2494
1594
try:
2495
1595
self.finish_request(request, address)
2496
except Exception:
1596
except:
2497
1597
self.handle_error(request, address)
2498
1598
self.close_request(request)
2499
1599
2500
1600
def process_request(self, request, address):
2501
1601
"""Start a new process to process the request."""
2502
proc = multiprocessing.Process(target=self.sub_process_main,
2503
args=(request, address))
1602
proc = multiprocessing.Process(target = self.sub_process_main,
1603
args = (request,
1604
address))
2504
1605
proc.start()
2505
1606
return proc
2506
1607
2507
1608
2508
1609
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2509
1610
""" adds a pipe to the MixIn """
2510
2511
1611
def process_request(self, request, client_address):
2512
1612
"""Overrides and wraps the original process_request().
2513
1613
2514
1614
This function creates a new pipe in self.pipe
2515
1615
"""
2516
1616
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2517
1617
2518
1618
proc = MultiprocessingMixIn.process_request(self, request,
2519
1619
client_address)
2520
1620
self.child_pipe.close()
2521
1621
self.add_pipe(parent_pipe, proc)
2522
1622
2523
1623
def add_pipe(self, parent_pipe, proc):
2524
1624
"""Dummy function; override as necessary"""
2525
raise NotImplementedError()
1625
raise NotImplementedError
2526
1626
2527
1627
2528
1628
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2529
1629
socketserver.TCPServer, object):
2530
1630
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
2531
1631
2532
1632
Attributes:
2533
1633
enabled: Boolean; whether this server is activated yet
2534
1634
interface: None or a network interface name (string)
2535
1635
use_ipv6: Boolean; to use IPv6 or not
2536
1636
"""
2537
2538
1637
def __init__(self, server_address, RequestHandlerClass,
2539
interface=None,
2540
use_ipv6=True,
2541
socketfd=None):
2542
"""If socketfd is set, use that file descriptor instead of
2543
creating a new one with socket.socket().
2544
"""
1638
interface=None, use_ipv6=True):
2545
1639
self.interface = interface
2546
1640
if use_ipv6:
2547
1641
self.address_family = socket.AF_INET6
2548
if socketfd is not None:
2549
# Save the file descriptor
2550
self.socketfd = socketfd
2551
# Save the original socket.socket() function
2552
self.socket_socket = socket.socket
2553
2554
# To implement --socket, we monkey patch socket.socket.
2555
#
2556
# (When socketserver.TCPServer is a new-style class, we
2557
# could make self.socket into a property instead of monkey
2558
# patching socket.socket.)
2559
#
2560
# Create a one-time-only replacement for socket.socket()
2561
@functools.wraps(socket.socket)
2562
def socket_wrapper(*args, **kwargs):
2563
# Restore original function so subsequent calls are
2564
# not affected.
2565
socket.socket = self.socket_socket
2566
del self.socket_socket
2567
# This time only, return a new socket object from the
2568
# saved file descriptor.
2569
return socket.fromfd(self.socketfd, *args, **kwargs)
2570
# Replace socket.socket() function with wrapper
2571
socket.socket = socket_wrapper
2572
# The socketserver.TCPServer.__init__ will call
2573
# socket.socket(), which might be our replacement,
2574
# socket_wrapper(), if socketfd was set.
2575
1642
socketserver.TCPServer.__init__(self, server_address,
2576
1643
RequestHandlerClass)
2577
2578
1644
def server_bind(self):
2579
1645
"""This overrides the normal server_bind() function
2580
1646
to bind to an interface if one was specified, and also NOT to
2581
1647
bind to an address or port if they were not specified."""
2582
global SO_BINDTODEVICE
2583
1648
if self.interface is not None:
2584
1649
if SO_BINDTODEVICE is None:
2585
# Fall back to a hard-coded value which seems to be
2586
# common enough.
2587
logger.warning("SO_BINDTODEVICE not found, trying 25")
2588
SO_BINDTODEVICE = 25
2589
try:
2590
self.socket.setsockopt(
2591
socket.SOL_SOCKET, SO_BINDTODEVICE,
2592
(self.interface + "\0").encode("utf-8"))
2593
except socket.error as error:
2594
if error.errno == errno.EPERM:
2595
logger.error("No permission to bind to"
2596
" interface %s", self.interface)
2597
elif error.errno == errno.ENOPROTOOPT:
2598
logger.error("SO_BINDTODEVICE not available;"
2599
" cannot bind to interface %s",
2600
self.interface)
2601
elif error.errno == errno.ENODEV:
2602
logger.error("Interface %s does not exist,"
2603
" cannot bind", self.interface)
2604
else:
2605
raise
1650
logger.error("SO_BINDTODEVICE does not exist;"
1651
" cannot bind to interface %s",
1652
self.interface)
1653
else:
1654
try:
1655
self.socket.setsockopt(socket.SOL_SOCKET,
1656
SO_BINDTODEVICE,
1657
str(self.interface
1658
+ '\0'))
1659
except socket.error as error:
1660
if error[0] == errno.EPERM:
1661
logger.error("No permission to"
1662
" bind to interface %s",
1663
self.interface)
1664
elif error[0] == errno.ENOPROTOOPT:
1665
logger.error("SO_BINDTODEVICE not available;"
1666
" cannot bind to interface %s",
1667
self.interface)
1668
else:
1669
raise
2606
1670
# Only bind(2) the socket if we really need to.
2607
1671
if self.server_address[0] or self.server_address[1]:
2608
1672
if not self.server_address[0]:
2609
1673
if self.address_family == socket.AF_INET6:
2610
any_address = "::" # in6addr_any
1674
any_address = "::" # in6addr_any
2611
1675
else:
2612
any_address = "0.0.0.0" # INADDR_ANY
1676
any_address = socket.INADDR_ANY
2613
1677
self.server_address = (any_address,
2614
1678
self.server_address[1])
2615
1679
elif not self.server_address[1]:
2616
self.server_address = (self.server_address[0], 0)
1680
self.server_address = (self.server_address[0],
1681
0)
2617
1682
# if self.interface:
2618
1683
# self.server_address = (self.server_address[0],
2619
1684
# 0, # port
2625
1690
2626
1691
class MandosServer(IPv6_TCPServer):
2627
1692
"""Mandos server.
2628
1693
2629
1694
Attributes:
2630
1695
clients: set of Client objects
2631
1696
gnutls_priority GnuTLS priority string
2632
1697
use_dbus: Boolean; to emit D-Bus signals or not
2633
2634
Assumes a GLib.MainLoop event loop.
1698
1699
Assumes a gobject.MainLoop event loop.
2635
1700
"""
2636
2637
1701
def __init__(self, server_address, RequestHandlerClass,
2638
interface=None,
2639
use_ipv6=True,
2640
clients=None,
2641
gnutls_priority=None,
2642
use_dbus=True,
2643
socketfd=None):
1702
interface=None, use_ipv6=True, clients=None,
1703
gnutls_priority=None, use_dbus=True):
2644
1704
self.enabled = False
2645
1705
self.clients = clients
2646
1706
if self.clients is None:
2649
1709
self.gnutls_priority = gnutls_priority
2650
1710
IPv6_TCPServer.__init__(self, server_address,
2651
1711
RequestHandlerClass,
2652
interface=interface,
2653
use_ipv6=use_ipv6,
2654
socketfd=socketfd)
2655
1712
interface = interface,
1713
use_ipv6 = use_ipv6)
2656
1714
def server_activate(self):
2657
1715
if self.enabled:
2658
1716
return socketserver.TCPServer.server_activate(self)
2659
1717
2660
1718
def enable(self):
2661
1719
self.enabled = True
2662
1720
2663
1721
def add_pipe(self, parent_pipe, proc):
2664
1722
# Call "handle_ipc" for both data and EOF events
2665
GLib.io_add_watch(
2666
parent_pipe.fileno(),
2667
GLib.IO_IN | GLib.IO_HUP,
2668
functools.partial(self.handle_ipc,
2669
parent_pipe=parent_pipe,
2670
proc=proc))
2671
2672
def handle_ipc(self, source, condition,
2673
parent_pipe=None,
2674
proc=None,
2675
client_object=None):
1723
gobject.io_add_watch(parent_pipe.fileno(),
1724
gobject.IO_IN | gobject.IO_HUP,
1725
functools.partial(self.handle_ipc,
1726
parent_pipe =
1727
parent_pipe,
1728
proc = proc))
1729
1730
def handle_ipc(self, source, condition, parent_pipe=None,
1731
proc = None, client_object=None):
1732
condition_names = {
1733
gobject.IO_IN: "IN", # There is data to read.
1734
gobject.IO_OUT: "OUT", # Data can be written (without
1735
# blocking).
1736
gobject.IO_PRI: "PRI", # There is urgent data to read.
1737
gobject.IO_ERR: "ERR", # Error condition.
1738
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1739
# broken, usually for pipes and
1740
# sockets).
1741
}
1742
conditions_string = ' | '.join(name
1743
for cond, name in
1744
condition_names.iteritems()
1745
if cond & condition)
2676
1746
# error, or the other end of multiprocessing.Pipe has closed
2677
if condition & (GLib.IO_ERR | GLib.IO_HUP):
1747
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2678
1748
# Wait for other process to exit
2679
1749
proc.join()
2680
1750
return False
2681
1751
2682
1752
# Read a request from the child
2683
1753
request = parent_pipe.recv()
2684
1754
command = request[0]
2685
1755
2686
1756
if command == 'init':
2687
key_id = request[1].decode("ascii")
2688
fpr = request[2].decode("ascii")
2689
address = request[3]
2690
2691
for c in self.clients.values():
2692
if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2693
continue
2694
if key_id and c.key_id == key_id:
2695
client = c
2696
break
2697
if fpr and c.fingerprint == fpr:
1757
fpr = request[1]
1758
address = request[2]
1759
1760
for c in self.clients.itervalues():
1761
if c.fingerprint == fpr:
2698
1762
client = c
2699
1763
break
2700
1764
else:
2701
logger.info("Client not found for key ID: %s, address"
2702
": %s", key_id or fpr, address)
1765
logger.info("Client not found for fingerprint: %s, ad"
1766
"dress: %s", fpr, address)
2703
1767
if self.use_dbus:
2704
1768
# Emit D-Bus signal
2705
mandos_dbus_service.ClientNotFound(key_id or fpr,
1769
mandos_dbus_service.ClientNotFound(fpr,
2706
1770
address[0])
2707
1771
parent_pipe.send(False)
2708
1772
return False
2709
2710
GLib.io_add_watch(
2711
parent_pipe.fileno(),
2712
GLib.IO_IN | GLib.IO_HUP,
2713
functools.partial(self.handle_ipc,
2714
parent_pipe=parent_pipe,
2715
proc=proc,
2716
client_object=client))
1773
1774
gobject.io_add_watch(parent_pipe.fileno(),
1775
gobject.IO_IN | gobject.IO_HUP,
1776
functools.partial(self.handle_ipc,
1777
parent_pipe =
1778
parent_pipe,
1779
proc = proc,
1780
client_object =
1781
client))
2717
1782
parent_pipe.send(True)
2718
1783
# remove the old hook in favor of the new above hook on
2719
1784
# same fileno
2722
1787
funcname = request[1]
2723
1788
args = request[2]
2724
1789
kwargs = request[3]
2725
1790
2726
1791
parent_pipe.send(('data', getattr(client_object,
2727
1792
funcname)(*args,
2728
**kwargs)))
2729
1793
**kwargs)))
1794
2730
1795
if command == 'getattr':
2731
1796
attrname = request[1]
2732
if isinstance(client_object.__getattribute__(attrname),
2733
collections.Callable):
2734
parent_pipe.send(('function', ))
1797
if callable(client_object.__getattribute__(attrname)):
1798
parent_pipe.send(('function',))
2735
1799
else:
2736
parent_pipe.send((
2737
'data', client_object.__getattribute__(attrname)))
2738
1800
parent_pipe.send(('data', client_object
1801
.__getattribute__(attrname)))
1802
2739
1803
if command == 'setattr':
2740
1804
attrname = request[1]
2741
1805
value = request[2]
2742
1806
setattr(client_object, attrname, value)
2743
1807
2744
1808
return True
2745
1809
2746
1810
2747
def rfc3339_duration_to_delta(duration):
2748
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2749
2750
>>> rfc3339_duration_to_delta("P7D")
2751
datetime.timedelta(7)
2752
>>> rfc3339_duration_to_delta("PT60S")
2753
datetime.timedelta(0, 60)
2754
>>> rfc3339_duration_to_delta("PT60M")
2755
datetime.timedelta(0, 3600)
2756
>>> rfc3339_duration_to_delta("PT24H")
2757
datetime.timedelta(1)
2758
>>> rfc3339_duration_to_delta("P1W")
2759
datetime.timedelta(7)
2760
>>> rfc3339_duration_to_delta("PT5M30S")
2761
datetime.timedelta(0, 330)
2762
>>> rfc3339_duration_to_delta("P1DT3M20S")
2763
datetime.timedelta(1, 200)
2764
"""
2765
2766
# Parsing an RFC 3339 duration with regular expressions is not
2767
# possible - there would have to be multiple places for the same
2768
# values, like seconds. The current code, while more esoteric, is
2769
# cleaner without depending on a parsing library. If Python had a
2770
# built-in library for parsing we would use it, but we'd like to
2771
# avoid excessive use of external libraries.
2772
2773
# New type for defining tokens, syntax, and semantics all-in-one
2774
Token = collections.namedtuple("Token", (
2775
"regexp", # To match token; if "value" is not None, must have
2776
# a "group" containing digits
2777
"value", # datetime.timedelta or None
2778
"followers")) # Tokens valid after this token
2779
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2780
# the "duration" ABNF definition in RFC 3339, Appendix A.
2781
token_end = Token(re.compile(r"$"), None, frozenset())
2782
token_second = Token(re.compile(r"(\d+)S"),
2783
datetime.timedelta(seconds=1),
2784
frozenset((token_end, )))
2785
token_minute = Token(re.compile(r"(\d+)M"),
2786
datetime.timedelta(minutes=1),
2787
frozenset((token_second, token_end)))
2788
token_hour = Token(re.compile(r"(\d+)H"),
2789
datetime.timedelta(hours=1),
2790
frozenset((token_minute, token_end)))
2791
token_time = Token(re.compile(r"T"),
2792
None,
2793
frozenset((token_hour, token_minute,
2794
token_second)))
2795
token_day = Token(re.compile(r"(\d+)D"),
2796
datetime.timedelta(days=1),
2797
frozenset((token_time, token_end)))
2798
token_month = Token(re.compile(r"(\d+)M"),
2799
datetime.timedelta(weeks=4),
2800
frozenset((token_day, token_end)))
2801
token_year = Token(re.compile(r"(\d+)Y"),
2802
datetime.timedelta(weeks=52),
2803
frozenset((token_month, token_end)))
2804
token_week = Token(re.compile(r"(\d+)W"),
2805
datetime.timedelta(weeks=1),
2806
frozenset((token_end, )))
2807
token_duration = Token(re.compile(r"P"), None,
2808
frozenset((token_year, token_month,
2809
token_day, token_time,
2810
token_week)))
2811
# Define starting values:
2812
# Value so far
2813
value = datetime.timedelta()
2814
found_token = None
2815
# Following valid tokens
2816
followers = frozenset((token_duration, ))
2817
# String left to parse
2818
s = duration
2819
# Loop until end token is found
2820
while found_token is not token_end:
2821
# Search for any currently valid tokens
2822
for token in followers:
2823
match = token.regexp.match(s)
2824
if match is not None:
2825
# Token found
2826
if token.value is not None:
2827
# Value found, parse digits
2828
factor = int(match.group(1), 10)
2829
# Add to value so far
2830
value += factor * token.value
2831
# Strip token from string
2832
s = token.regexp.sub("", s, 1)
2833
# Go to found token
2834
found_token = token
2835
# Set valid next tokens
2836
followers = found_token.followers
2837
break
2838
else:
2839
# No currently valid tokens were found
2840
raise ValueError("Invalid RFC 3339 duration: {!r}"
2841
.format(duration))
2842
# End token found
2843
return value
2844
2845
2846
1811
def string_to_delta(interval):
2847
1812
"""Parse a string and return a datetime.timedelta
2848
1813
2849
1814
>>> string_to_delta('7d')
2850
1815
datetime.timedelta(7)
2851
1816
>>> string_to_delta('60s')
2859
1824
>>> string_to_delta('5m 30s')
2860
1825
datetime.timedelta(0, 330)
2861
1826
"""
2862
2863
try:
2864
return rfc3339_duration_to_delta(interval)
2865
except ValueError:
2866
pass
2867
2868
1827
timevalue = datetime.timedelta(0)
2869
1828
for s in interval.split():
2870
1829
try:
2871
suffix = s[-1]
1830
suffix = unicode(s[-1])
2872
1831
value = int(s[:-1])
2873
1832
if suffix == "d":
2874
1833
delta = datetime.timedelta(value)
2881
1840
elif suffix == "w":
2882
1841
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2883
1842
else:
2884
raise ValueError("Unknown suffix {!r}".format(suffix))
2885
except IndexError as e:
1843
raise ValueError("Unknown suffix %r" % suffix)
1844
except (ValueError, IndexError) as e:
2886
1845
raise ValueError(*(e.args))
2887
1846
timevalue += delta
2888
1847
return timevalue
2889
1848
2890
1849
2891
def daemon(nochdir=False, noclose=False):
1850
def if_nametoindex(interface):
1851
"""Call the C function if_nametoindex(), or equivalent
1852
1853
Note: This function cannot accept a unicode string."""
1854
global if_nametoindex
1855
try:
1856
if_nametoindex = (ctypes.cdll.LoadLibrary
1857
(ctypes.util.find_library("c"))
1858
.if_nametoindex)
1859
except (OSError, AttributeError):
1860
logger.warning("Doing if_nametoindex the hard way")
1861
def if_nametoindex(interface):
1862
"Get an interface index the hard way, i.e. using fcntl()"
1863
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1864
with contextlib.closing(socket.socket()) as s:
1865
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1866
struct.pack(str("16s16x"),
1867
interface))
1868
interface_index = struct.unpack(str("I"),
1869
ifreq[16:20])[0]
1870
return interface_index
1871
return if_nametoindex(interface)
1872
1873
1874
def daemon(nochdir = False, noclose = False):
2892
1875
"""See daemon(3). Standard BSD Unix function.
2893
1876
2894
1877
This should really exist as os.daemon, but it doesn't (yet)."""
2895
1878
if os.fork():
2896
1879
sys.exit()
2901
1884
sys.exit()
2902
1885
if not noclose:
2903
1886
# Close all standard open file descriptors
2904
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1887
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2905
1888
if not stat.S_ISCHR(os.fstat(null).st_mode):
2906
1889
raise OSError(errno.ENODEV,
2907
"{} not a character device"
2908
.format(os.devnull))
1890
"%s not a character device"
1891
% os.path.devnull)
2909
1892
os.dup2(null, sys.stdin.fileno())
2910
1893
os.dup2(null, sys.stdout.fileno())
2911
1894
os.dup2(null, sys.stderr.fileno())
2914
1897
2915
1898
2916
1899
def main():
2917
1900
2918
1901
##################################################################
2919
1902
# Parsing of options, both command line and config file
2920
1903
2921
1904
parser = argparse.ArgumentParser()
2922
1905
parser.add_argument("-v", "--version", action="version",
2923
version="%(prog)s {}".format(version),
1906
version = "%%(prog)s %s" % version,
2924
1907
help="show version number and exit")
2925
1908
parser.add_argument("-i", "--interface", metavar="IF",
2926
1909
help="Bind to interface IF")
2932
1915
help="Run self-test")
2933
1916
parser.add_argument("--debug", action="store_true",
2934
1917
help="Debug mode; run in foreground and log"
2935
" to terminal", default=None)
1918
" to terminal")
2936
1919
parser.add_argument("--debuglevel", metavar="LEVEL",
2937
1920
help="Debug level for stdout output")
2938
1921
parser.add_argument("--priority", help="GnuTLS"
2945
1928
" files")
2946
1929
parser.add_argument("--no-dbus", action="store_false",
2947
1930
dest="use_dbus", help="Do not provide D-Bus"
2948
" system bus interface", default=None)
1931
" system bus interface")
2949
1932
parser.add_argument("--no-ipv6", action="store_false",
2950
dest="use_ipv6", help="Do not use IPv6",
2951
default=None)
1933
dest="use_ipv6", help="Do not use IPv6")
2952
1934
parser.add_argument("--no-restore", action="store_false",
2953
dest="restore", help="Do not restore stored"
2954
" state", default=None)
2955
parser.add_argument("--socket", type=int,
2956
help="Specify a file descriptor to a network"
2957
" socket to use instead of creating one")
2958
parser.add_argument("--statedir", metavar="DIR",
2959
help="Directory to save/restore state in")
2960
parser.add_argument("--foreground", action="store_true",
2961
help="Run in foreground", default=None)
2962
parser.add_argument("--no-zeroconf", action="store_false",
2963
dest="zeroconf", help="Do not use Zeroconf",
2964
default=None)
1935
dest="restore",
1936
help="Do not restore stored state",
1937
default=True)
2965
1938
2966
1939
options = parser.parse_args()
2967
1940
2968
1941
if options.check:
2969
1942
import doctest
2970
fail_count, test_count = doctest.testmod()
2971
sys.exit(os.EX_OK if fail_count == 0 else 1)
2972
1943
doctest.testmod()
1944
sys.exit()
1945
2973
1946
# Default values for config file for server-global settings
2974
if gnutls.has_rawpk:
2975
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
2976
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
2977
else:
2978
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2979
":+SIGN-DSA-SHA256")
2980
server_defaults = {"interface": "",
2981
"address": "",
2982
"port": "",
2983
"debug": "False",
2984
"priority": priority,
2985
"servicename": "Mandos",
2986
"use_dbus": "True",
2987
"use_ipv6": "True",
2988
"debuglevel": "",
2989
"restore": "True",
2990
"socket": "",
2991
"statedir": "/var/lib/mandos",
2992
"foreground": "False",
2993
"zeroconf": "True",
2994
}
2995
del priority
2996
1947
server_defaults = { "interface": "",
1948
"address": "",
1949
"port": "",
1950
"debug": "False",
1951
"priority":
1952
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1953
"servicename": "Mandos",
1954
"use_dbus": "True",
1955
"use_ipv6": "True",
1956
"debuglevel": "",
1957
}
1958
2997
1959
# Parse config file for server-global settings
2998
1960
server_config = configparser.SafeConfigParser(server_defaults)
2999
1961
del server_defaults
3000
server_config.read(os.path.join(options.configdir, "mandos.conf"))
1962
server_config.read(os.path.join(options.configdir,
1963
"mandos.conf"))
3001
1964
# Convert the SafeConfigParser object to a dict
3002
1965
server_settings = server_config.defaults()
3003
1966
# Use the appropriate methods on the non-string config options
3004
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3005
"foreground", "zeroconf"):
1967
for option in ("debug", "use_dbus", "use_ipv6"):
3006
1968
server_settings[option] = server_config.getboolean("DEFAULT",
3007
1969
option)
3008
1970
if server_settings["port"]:
3009
1971
server_settings["port"] = server_config.getint("DEFAULT",
3010
1972
"port")
3011
if server_settings["socket"]:
3012
server_settings["socket"] = server_config.getint("DEFAULT",
3013
"socket")
3014
# Later, stdin will, and stdout and stderr might, be dup'ed
3015
# over with an opened os.devnull. But we don't want this to
3016
# happen with a supplied network socket.
3017
if 0 <= server_settings["socket"] <= 2:
3018
server_settings["socket"] = os.dup(server_settings
3019
["socket"])
3020
1973
del server_config
3021
1974
3022
1975
# Override the settings from the config file with command line
3023
1976
# options, if set.
3024
1977
for option in ("interface", "address", "port", "debug",
3025
"priority", "servicename", "configdir", "use_dbus",
3026
"use_ipv6", "debuglevel", "restore", "statedir",
3027
"socket", "foreground", "zeroconf"):
1978
"priority", "servicename", "configdir",
1979
"use_dbus", "use_ipv6", "debuglevel", "restore"):
3028
1980
value = getattr(options, option)
3029
1981
if value is not None:
3030
1982
server_settings[option] = value
3031
1983
del options
3032
1984
# Force all strings to be unicode
3033
1985
for option in server_settings.keys():
3034
if isinstance(server_settings[option], bytes):
3035
server_settings[option] = (server_settings[option]
3036
.decode("utf-8"))
3037
# Force all boolean options to be boolean
3038
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3039
"foreground", "zeroconf"):
3040
server_settings[option] = bool(server_settings[option])
3041
# Debug implies foreground
3042
if server_settings["debug"]:
3043
server_settings["foreground"] = True
1986
if type(server_settings[option]) is str:
1987
server_settings[option] = unicode(server_settings[option])
3044
1988
# Now we have our good server settings in "server_settings"
3045
1989
3046
1990
##################################################################
3047
3048
if (not server_settings["zeroconf"]
3049
and not (server_settings["port"]
3050
or server_settings["socket"] != "")):
3051
parser.error("Needs port or socket to work without Zeroconf")
3052
1991
3053
1992
# For convenience
3054
1993
debug = server_settings["debug"]
3055
1994
debuglevel = server_settings["debuglevel"]
3056
1995
use_dbus = server_settings["use_dbus"]
3057
1996
use_ipv6 = server_settings["use_ipv6"]
3058
stored_state_path = os.path.join(server_settings["statedir"],
3059
stored_state_file)
3060
foreground = server_settings["foreground"]
3061
zeroconf = server_settings["zeroconf"]
3062
3063
if debug:
3064
initlogger(debug, logging.DEBUG)
3065
else:
3066
if not debuglevel:
3067
initlogger(debug)
3068
else:
3069
level = getattr(logging, debuglevel.upper())
3070
initlogger(debug, level)
3071
1997
3072
1998
if server_settings["servicename"] != "Mandos":
3073
syslogger.setFormatter(
3074
logging.Formatter('Mandos ({}) [%(process)d]:'
3075
' %(levelname)s: %(message)s'.format(
3076
server_settings["servicename"])))
3077
1999
syslogger.setFormatter(logging.Formatter
2000
('Mandos (%s) [%%(process)d]:'
2001
' %%(levelname)s: %%(message)s'
2002
% server_settings["servicename"]))
2003
3078
2004
# Parse config file with clients
3079
client_config = configparser.SafeConfigParser(Client
3080
.client_defaults)
2005
client_defaults = { "timeout": "5m",
2006
"extended_timeout": "15m",
2007
"interval": "2m",
2008
"checker": "fping -q -- %%(host)s",
2009
"host": "",
2010
"approval_delay": "0s",
2011
"approval_duration": "1s",
2012
}
2013
client_config = configparser.SafeConfigParser(client_defaults)
3081
2014
client_config.read(os.path.join(server_settings["configdir"],
3082
2015
"clients.conf"))
3083
2016
3084
2017
global mandos_dbus_service
3085
2018
mandos_dbus_service = None
3086
3087
socketfd = None
3088
if server_settings["socket"] != "":
3089
socketfd = server_settings["socket"]
3090
tcp_server = MandosServer(
3091
(server_settings["address"], server_settings["port"]),
3092
ClientHandler,
3093
interface=(server_settings["interface"] or None),
3094
use_ipv6=use_ipv6,
3095
gnutls_priority=server_settings["priority"],
3096
use_dbus=use_dbus,
3097
socketfd=socketfd)
3098
if not foreground:
3099
pidfilename = "/run/mandos.pid"
3100
if not os.path.isdir("/run/."):
3101
pidfilename = "/var/run/mandos.pid"
3102
pidfile = None
3103
try:
3104
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3105
except IOError as e:
3106
logger.error("Could not open file %r", pidfilename,
3107
exc_info=e)
3108
3109
for name, group in (("_mandos", "_mandos"),
3110
("mandos", "mandos"),
3111
("nobody", "nogroup")):
3112
try:
3113
uid = pwd.getpwnam(name).pw_uid
3114
gid = pwd.getpwnam(group).pw_gid
3115
break
2019
2020
tcp_server = MandosServer((server_settings["address"],
2021
server_settings["port"]),
2022
ClientHandler,
2023
interface=(server_settings["interface"]
2024
or None),
2025
use_ipv6=use_ipv6,
2026
gnutls_priority=
2027
server_settings["priority"],
2028
use_dbus=use_dbus)
2029
if not debug:
2030
pidfilename = "/var/run/mandos.pid"
2031
try:
2032
pidfile = open(pidfilename, "w")
2033
except IOError:
2034
logger.error("Could not open file %r", pidfilename)
2035
2036
try:
2037
uid = pwd.getpwnam("_mandos").pw_uid
2038
gid = pwd.getpwnam("_mandos").pw_gid
2039
except KeyError:
2040
try:
2041
uid = pwd.getpwnam("mandos").pw_uid
2042
gid = pwd.getpwnam("mandos").pw_gid
3116
2043
except KeyError:
3117
continue
3118
else:
3119
uid = 65534
3120
gid = 65534
2044
try:
2045
uid = pwd.getpwnam("nobody").pw_uid
2046
gid = pwd.getpwnam("nobody").pw_gid
2047
except KeyError:
2048
uid = 65534
2049
gid = 65534
3121
2050
try:
3122
2051
os.setgid(gid)
3123
2052
os.setuid(uid)
3124
if debug:
3125
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3126
gid))
3127
2053
except OSError as error:
3128
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3129
.format(uid, gid, os.strerror(error.errno)))
3130
if error.errno != errno.EPERM:
3131
raise
3132
2054
if error[0] != errno.EPERM:
2055
raise error
2056
2057
if not debug and not debuglevel:
2058
logger.setLevel(logging.WARNING)
2059
if debuglevel:
2060
level = getattr(logging, debuglevel.upper())
2061
logger.setLevel(level)
2062
3133
2063
if debug:
2064
logger.setLevel(logging.DEBUG)
3134
2065
# Enable all possible GnuTLS debugging
3135
2066
3136
2067
# "Use a log level over 10 to enable all debugging options."
3137
2068
# - GnuTLS manual
3138
gnutls.global_set_log_level(11)
3139
3140
@gnutls.log_func
2069
gnutls.library.functions.gnutls_global_set_log_level(11)
2070
2071
@gnutls.library.types.gnutls_log_func
3141
2072
def debug_gnutls(level, string):
3142
2073
logger.debug("GnuTLS: %s", string[:-1])
3143
3144
gnutls.global_set_log_function(debug_gnutls)
3145
2074
2075
(gnutls.library.functions
2076
.gnutls_global_set_log_function(debug_gnutls))
2077
3146
2078
# Redirect stdin so all checkers get /dev/null
3147
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2079
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3148
2080
os.dup2(null, sys.stdin.fileno())
3149
2081
if null > 2:
3150
2082
os.close(null)
3151
2083
else:
2084
# No console logging
2085
logger.removeHandler(console)
2086
3152
2087
# Need to fork before connecting to D-Bus
3153
if not foreground:
2088
if not debug:
3154
2089
# Close all input and output, do double fork, etc.
3155
2090
daemon()
3156
3157
# multiprocessing will use threads, so before we use GLib we need
3158
# to inform GLib that threads will be used.
3159
GLib.threads_init()
3160
2091
3161
2092
global main_loop
3162
2093
# From the Avahi example code
3163
DBusGMainLoop(set_as_default=True)
3164
main_loop = GLib.MainLoop()
2094
DBusGMainLoop(set_as_default=True )
2095
main_loop = gobject.MainLoop()
3165
2096
bus = dbus.SystemBus()
3166
2097
# End of Avahi example code
3167
2098
if use_dbus:
3168
2099
try:
3169
2100
bus_name = dbus.service.BusName("se.recompile.Mandos",
3170
bus,
3171
do_not_queue=True)
3172
old_bus_name = dbus.service.BusName(
3173
"se.bsnet.fukt.Mandos", bus,
3174
do_not_queue=True)
3175
except dbus.exceptions.DBusException as e:
3176
logger.error("Disabling D-Bus:", exc_info=e)
2101
bus, do_not_queue=True)
2102
old_bus_name = (dbus.service.BusName
2103
("se.bsnet.fukt.Mandos", bus,
2104
do_not_queue=True))
2105
except dbus.exceptions.NameExistsException as e:
2106
logger.error(unicode(e) + ", disabling D-Bus")
3177
2107
use_dbus = False
3178
2108
server_settings["use_dbus"] = False
3179
2109
tcp_server.use_dbus = False
3180
if zeroconf:
3181
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3182
service = AvahiServiceToSyslog(
3183
name=server_settings["servicename"],
3184
servicetype="_mandos._tcp",
3185
protocol=protocol,
3186
bus=bus)
3187
if server_settings["interface"]:
3188
service.interface = if_nametoindex(
3189
server_settings["interface"].encode("utf-8"))
3190
2110
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2111
service = AvahiServiceToSyslog(name =
2112
server_settings["servicename"],
2113
servicetype = "_mandos._tcp",
2114
protocol = protocol, bus = bus)
2115
if server_settings["interface"]:
2116
service.interface = (if_nametoindex
2117
(str(server_settings["interface"])))
2118
3191
2119
global multiprocessing_manager
3192
2120
multiprocessing_manager = multiprocessing.Manager()
3193
2121
3194
2122
client_class = Client
3195
2123
if use_dbus:
3196
client_class = functools.partial(ClientDBus, bus=bus)
3197
3198
client_settings = Client.config_parser(client_config)
2124
client_class = functools.partial(ClientDBusTransitional,
2125
bus = bus)
2126
2127
special_settings = {
2128
# Some settings need to be accessd by special methods;
2129
# booleans need .getboolean(), etc. Here is a list of them:
2130
"approved_by_default":
2131
lambda section:
2132
client_config.getboolean(section, "approved_by_default"),
2133
}
2134
# Construct a new dict of client settings of this form:
2135
# { client_name: {setting_name: value, ...}, ...}
2136
# with exceptions for any special settings as defined above
2137
client_settings = dict((clientname,
2138
dict((setting,
2139
(value if
2140
setting not in special_settings
2141
else special_settings[setting]
2142
(clientname)))
2143
for setting, value
2144
in client_config.items(clientname)))
2145
for clientname in client_config.sections())
2146
3199
2147
old_client_settings = {}
3200
clients_data = {}
3201
3202
# This is used to redirect stdout and stderr for checker processes
3203
global wnull
3204
wnull = open(os.devnull, "w") # A writable /dev/null
3205
# Only used if server is running in foreground but not in debug
3206
# mode
3207
if debug or not foreground:
3208
wnull.close()
3209
3210
# Get client data and settings from last running state.
2148
clients_data = []
2149
2150
# Get client data and settings from last running state.
3211
2151
if server_settings["restore"]:
3212
2152
try:
3213
2153
with open(stored_state_path, "rb") as stored_state:
3214
if sys.version_info.major == 2:
3215
clients_data, old_client_settings = pickle.load(
3216
stored_state)
3217
else:
3218
bytes_clients_data, bytes_old_client_settings = (
3219
pickle.load(stored_state, encoding="bytes"))
3220
# Fix bytes to strings
3221
# clients_data
3222
# .keys()
3223
clients_data = {(key.decode("utf-8")
3224
if isinstance(key, bytes)
3225
else key): value
3226
for key, value in
3227
bytes_clients_data.items()}
3228
del bytes_clients_data
3229
for key in clients_data:
3230
value = {(k.decode("utf-8")
3231
if isinstance(k, bytes) else k): v
3232
for k, v in
3233
clients_data[key].items()}
3234
clients_data[key] = value
3235
# .client_structure
3236
value["client_structure"] = [
3237
(s.decode("utf-8")
3238
if isinstance(s, bytes)
3239
else s) for s in
3240
value["client_structure"]]
3241
# .name & .host
3242
for k in ("name", "host"):
3243
if isinstance(value[k], bytes):
3244
value[k] = value[k].decode("utf-8")
3245
if not value.has_key("key_id"):
3246
value["key_id"] = ""
3247
elif not value.has_key("fingerprint"):
3248
value["fingerprint"] = ""
3249
# old_client_settings
3250
# .keys()
3251
old_client_settings = {
3252
(key.decode("utf-8")
3253
if isinstance(key, bytes)
3254
else key): value
3255
for key, value in
3256
bytes_old_client_settings.items()}
3257
del bytes_old_client_settings
3258
# .host
3259
for value in old_client_settings.values():
3260
if isinstance(value["host"], bytes):
3261
value["host"] = (value["host"]
3262
.decode("utf-8"))
2154
clients_data, old_client_settings = (
2155
pickle.load(stored_state))
3263
2156
os.remove(stored_state_path)
3264
2157
except IOError as e:
3265
if e.errno == errno.ENOENT:
3266
logger.warning("Could not load persistent state:"
3267
" {}".format(os.strerror(e.errno)))
3268
else:
3269
logger.critical("Could not load persistent state:",
3270
exc_info=e)
2158
logger.warning("Could not load persistant state: {0}"
2159
.format(e))
2160
if e.errno != errno.ENOENT:
3271
2161
raise
3272
except EOFError as e:
3273
logger.warning("Could not load persistent state: "
3274
"EOFError:",
3275
exc_info=e)
3276
3277
with PGPEngine() as pgp:
3278
for client_name, client in clients_data.items():
3279
# Skip removed clients
3280
if client_name not in client_settings:
3281
continue
3282
3283
# Decide which value to use after restoring saved state.
3284
# We have three different values: Old config file,
3285
# new config file, and saved state.
3286
# New config value takes precedence if it differs from old
3287
# config value, otherwise use saved state.
3288
for name, value in client_settings[client_name].items():
3289
try:
3290
# For each value in new config, check if it
3291
# differs from the old config value (Except for
3292
# the "secret" attribute)
3293
if (name != "secret"
3294
and (value !=
3295
old_client_settings[client_name][name])):
3296
client[name] = value
3297
except KeyError:
3298
pass
3299
3300
# Clients who has passed its expire date can still be
3301
# enabled if its last checker was successful. A Client
3302
# whose checker succeeded before we stored its state is
3303
# assumed to have successfully run all checkers during
3304
# downtime.
3305
if client["enabled"]:
3306
if datetime.datetime.utcnow() >= client["expires"]:
3307
if not client["last_checked_ok"]:
3308
logger.warning(
3309
"disabling client {} - Client never "
3310
"performed a successful checker".format(
3311
client_name))
3312
client["enabled"] = False
3313
elif client["last_checker_status"] != 0:
3314
logger.warning(
3315
"disabling client {} - Client last"
3316
" checker failed with error code"
3317
" {}".format(
3318
client_name,
3319
client["last_checker_status"]))
3320
client["enabled"] = False
3321
else:
3322
client["expires"] = (
3323
datetime.datetime.utcnow()
3324
+ client["timeout"])
3325
logger.debug("Last checker succeeded,"
3326
" keeping {} enabled".format(
3327
client_name))
2162
2163
for client in clients_data:
2164
client_name = client["name"]
2165
2166
# Decide which value to use after restoring saved state.
2167
# We have three different values: Old config file,
2168
# new config file, and saved state.
2169
# New config value takes precedence if it differs from old
2170
# config value, otherwise use saved state.
2171
for name, value in client_settings[client_name].items():
3328
2172
try:
3329
client["secret"] = pgp.decrypt(
3330
client["encrypted_secret"],
3331
client_settings[client_name]["secret"])
3332
except PGPError:
3333
# If decryption fails, we use secret from new settings
3334
logger.debug("Failed to decrypt {} old secret".format(
3335
client_name))
3336
client["secret"] = (client_settings[client_name]
3337
["secret"])
3338
3339
# Add/remove clients based on new changes made to config
3340
for client_name in (set(old_client_settings)
3341
- set(client_settings)):
3342
del clients_data[client_name]
3343
for client_name in (set(client_settings)
3344
- set(old_client_settings)):
3345
clients_data[client_name] = client_settings[client_name]
3346
3347
# Create all client objects
3348
for client_name, client in clients_data.items():
3349
tcp_server.clients[client_name] = client_class(
3350
name=client_name,
3351
settings=client,
3352
server_settings=server_settings)
3353
2173
# For each value in new config, check if it differs
2174
# from the old config value (Except for the "secret"
2175
# attribute)
2176
if (name != "secret" and
2177
value != old_client_settings[client_name][name]):
2178
setattr(client, name, value)
2179
except KeyError:
2180
pass
2181
2182
# Clients who has passed its expire date, can still be enabled
2183
# if its last checker was sucessful. Clients who checkers
2184
# failed before we stored it state is asumed to had failed
2185
# checker during downtime.
2186
if client["enabled"] and client["last_checked_ok"]:
2187
if ((datetime.datetime.utcnow()
2188
- client["last_checked_ok"]) > client["interval"]):
2189
if client["last_checker_status"] != 0:
2190
client["enabled"] = False
2191
else:
2192
client["expires"] = (datetime.datetime.utcnow()
2193
+ client["timeout"])
2194
2195
client["changedstate"] = (multiprocessing_manager
2196
.Condition(multiprocessing_manager
2197
.Lock()))
2198
if use_dbus:
2199
new_client = ClientDBusTransitional.__new__(
2200
ClientDBusTransitional)
2201
tcp_server.clients[client_name] = new_client
2202
new_client.bus = bus
2203
for name, value in client.iteritems():
2204
setattr(new_client, name, value)
2205
new_client._approvals_pending = 0
2206
new_client.add_to_dbus()
2207
else:
2208
tcp_server.clients[client_name] = Client.__new__(Client)
2209
for name, value in client.iteritems():
2210
setattr(tcp_server.clients[client_name], name, value)
2211
2212
tcp_server.clients[client_name].decrypt_secret(
2213
client_settings[client_name]["secret"])
2214
2215
# Create/remove clients based on new changes made to config
2216
for clientname in set(old_client_settings) - set(client_settings):
2217
del tcp_server.clients[clientname]
2218
for clientname in set(client_settings) - set(old_client_settings):
2219
tcp_server.clients[clientname] = client_class(name
2220
= clientname,
2221
config =
2222
client_settings
2223
[clientname])
2224
3354
2225
if not tcp_server.clients:
3355
2226
logger.warning("No clients defined")
3356
3357
if not foreground:
3358
if pidfile is not None:
3359
pid = os.getpid()
3360
try:
3361
with pidfile:
3362
print(pid, file=pidfile)
3363
except IOError:
3364
logger.error("Could not write to file %r with PID %d",
3365
pidfilename, pid)
3366
del pidfile
2227
2228
if not debug:
2229
try:
2230
with pidfile:
2231
pid = os.getpid()
2232
pidfile.write(str(pid) + "\n".encode("utf-8"))
2233
del pidfile
2234
except IOError:
2235
logger.error("Could not write to file %r with PID %d",
2236
pidfilename, pid)
2237
except NameError:
2238
# "pidfile" was never created
2239
pass
3367
2240
del pidfilename
3368
3369
for termsig in (signal.SIGHUP, signal.SIGTERM):
3370
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3371
lambda: main_loop.quit() and False)
3372
2241
2242
signal.signal(signal.SIGINT, signal.SIG_IGN)
2243
2244
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2245
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2246
3373
2247
if use_dbus:
3374
3375
@alternate_dbus_interfaces(
3376
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3377
class MandosDBusService(DBusObjectWithObjectManager):
2248
class MandosDBusService(dbus.service.Object):
3378
2249
"""A D-Bus proxy object"""
3379
3380
2250
def __init__(self):
3381
2251
dbus.service.Object.__init__(self, bus, "/")
3382
3383
2252
_interface = "se.recompile.Mandos"
3384
2253
3385
2254
@dbus.service.signal(_interface, signature="o")
3386
2255
def ClientAdded(self, objpath):
3387
2256
"D-Bus signal"
3388
2257
pass
3389
2258
3390
2259
@dbus.service.signal(_interface, signature="ss")
3391
def ClientNotFound(self, key_id, address):
2260
def ClientNotFound(self, fingerprint, address):
3392
2261
"D-Bus signal"
3393
2262
pass
3394
3395
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3396
"true"})
2263
3397
2264
@dbus.service.signal(_interface, signature="os")
3398
2265
def ClientRemoved(self, objpath, name):
3399
2266
"D-Bus signal"
3400
2267
pass
3401
3402
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3403
"true"})
2268
3404
2269
@dbus.service.method(_interface, out_signature="ao")
3405
2270
def GetAllClients(self):
3406
2271
"D-Bus method"
3407
return dbus.Array(c.dbus_object_path for c in
3408
tcp_server.clients.values())
3409
3410
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3411
"true"})
2272
return dbus.Array(c.dbus_object_path
2273
for c in
2274
tcp_server.clients.itervalues())
2275
3412
2276
@dbus.service.method(_interface,
3413
2277
out_signature="a{oa{sv}}")
3414
2278
def GetAllClientsWithProperties(self):
3415
2279
"D-Bus method"
3416
2280
return dbus.Dictionary(
3417
{c.dbus_object_path: c.GetAll(
3418
"se.recompile.Mandos.Client")
3419
for c in tcp_server.clients.values()},
2281
((c.dbus_object_path, c.GetAll(""))
2282
for c in tcp_server.clients.itervalues()),
3420
2283
signature="oa{sv}")
3421
2284
3422
2285
@dbus.service.method(_interface, in_signature="o")
3423
2286
def RemoveClient(self, object_path):
3424
2287
"D-Bus method"
3425
for c in tcp_server.clients.values():
2288
for c in tcp_server.clients.itervalues():
3426
2289
if c.dbus_object_path == object_path:
3427
2290
del tcp_server.clients[c.name]
3428
2291
c.remove_from_connection()
3429
# Don't signal the disabling
2292
# Don't signal anything except ClientRemoved
3430
2293
c.disable(quiet=True)
3431
# Emit D-Bus signal for removal
3432
self.client_removed_signal(c)
2294
# Emit D-Bus signal
2295
self.ClientRemoved(object_path, c.name)
3433
2296
return
3434
2297
raise KeyError(object_path)
3435
2298
3436
2299
del _interface
3437
3438
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3439
out_signature="a{oa{sa{sv}}}")
3440
def GetManagedObjects(self):
3441
"""D-Bus method"""
3442
return dbus.Dictionary(
3443
{client.dbus_object_path:
3444
dbus.Dictionary(
3445
{interface: client.GetAll(interface)
3446
for interface in
3447
client._get_all_interface_names()})
3448
for client in tcp_server.clients.values()})
3449
3450
def client_added_signal(self, client):
3451
"""Send the new standard signal and the old signal"""
3452
if use_dbus:
3453
# New standard signal
3454
self.InterfacesAdded(
3455
client.dbus_object_path,
3456
dbus.Dictionary(
3457
{interface: client.GetAll(interface)
3458
for interface in
3459
client._get_all_interface_names()}))
3460
# Old signal
3461
self.ClientAdded(client.dbus_object_path)
3462
3463
def client_removed_signal(self, client):
3464
"""Send the new standard signal and the old signal"""
3465
if use_dbus:
3466
# New standard signal
3467
self.InterfacesRemoved(
3468
client.dbus_object_path,
3469
client._get_all_interface_names())
3470
# Old signal
3471
self.ClientRemoved(client.dbus_object_path,
3472
client.name)
3473
3474
mandos_dbus_service = MandosDBusService()
3475
3476
# Save modules to variables to exempt the modules from being
3477
# unloaded before the function registered with atexit() is run.
3478
mp = multiprocessing
3479
wn = wnull
3480
2300
2301
class MandosDBusServiceTransitional(MandosDBusService):
2302
__metaclass__ = AlternateDBusNamesMetaclass
2303
mandos_dbus_service = MandosDBusServiceTransitional()
2304
3481
2305
def cleanup():
3482
2306
"Cleanup function; run on exit"
3483
if zeroconf:
3484
service.cleanup()
3485
3486
mp.active_children()
3487
wn.close()
2307
service.cleanup()
2308
2309
multiprocessing.active_children()
3488
2310
if not (tcp_server.clients or client_settings):
3489
2311
return
3490
2312
3491
2313
# Store client before exiting. Secrets are encrypted with key
3492
2314
# based on what config file has. If config file is
3493
2315
# removed/edited, old secret will thus be unrecovable.
3494
clients = {}
3495
with PGPEngine() as pgp:
3496
for client in tcp_server.clients.values():
3497
key = client_settings[client.name]["secret"]
3498
client.encrypted_secret = pgp.encrypt(client.secret,
3499
key)
3500
client_dict = {}
3501
3502
# A list of attributes that can not be pickled
3503
# + secret.
3504
exclude = {"bus", "changedstate", "secret",
3505
"checker", "server_settings"}
3506
for name, typ in inspect.getmembers(dbus.service
3507
.Object):
3508
exclude.add(name)
3509
3510
client_dict["encrypted_secret"] = (client
3511
.encrypted_secret)
3512
for attr in client.client_structure:
3513
if attr not in exclude:
3514
client_dict[attr] = getattr(client, attr)
3515
3516
clients[client.name] = client_dict
3517
del client_settings[client.name]["secret"]
3518
2316
clients = []
2317
for client in tcp_server.clients.itervalues():
2318
client.encrypt_secret(
2319
client_settings[client.name]["secret"])
2320
2321
client_dict = {}
2322
2323
# A list of attributes that will not be stored when
2324
# shutting down.
2325
exclude = set(("bus", "changedstate", "secret"))
2326
for name, typ in inspect.getmembers(dbus.service.Object):
2327
exclude.add(name)
2328
2329
client_dict["encrypted_secret"] = client.encrypted_secret
2330
for attr in client.client_structure:
2331
if attr not in exclude:
2332
client_dict[attr] = getattr(client, attr)
2333
2334
clients.append(client_dict)
2335
del client_settings[client.name]["secret"]
2336
3519
2337
try:
3520
with tempfile.NamedTemporaryFile(
3521
mode='wb',
3522
suffix=".pickle",
3523
prefix='clients-',
3524
dir=os.path.dirname(stored_state_path),
3525
delete=False) as stored_state:
3526
pickle.dump((clients, client_settings), stored_state,
3527
protocol=2)
3528
tempname = stored_state.name
3529
os.rename(tempname, stored_state_path)
3530
except (IOError, OSError) as e:
3531
if not debug:
3532
try:
3533
os.remove(tempname)
3534
except NameError:
3535
pass
3536
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3537
logger.warning("Could not save persistent state: {}"
3538
.format(os.strerror(e.errno)))
3539
else:
3540
logger.warning("Could not save persistent state:",
3541
exc_info=e)
2338
with os.fdopen(os.open(stored_state_path,
2339
os.O_CREAT|os.O_WRONLY|os.O_TRUNC,
2340
stat.S_IRUSR | stat.S_IWUSR),
2341
"wb") as stored_state:
2342
pickle.dump((clients, client_settings), stored_state)
2343
except IOError as e:
2344
logger.warning("Could not save persistant state: {0}"
2345
.format(e))
2346
if e.errno != errno.ENOENT:
3542
2347
raise
3543
2348
3544
2349
# Delete all clients, and settings from config
3546
2351
name, client = tcp_server.clients.popitem()
3547
2352
if use_dbus:
3548
2353
client.remove_from_connection()
3549
# Don't signal the disabling
2354
# Don't signal anything except ClientRemoved
3550
2355
client.disable(quiet=True)
3551
# Emit D-Bus signal for removal
3552
2356
if use_dbus:
3553
mandos_dbus_service.client_removed_signal(client)
2357
# Emit D-Bus signal
2358
mandos_dbus_service.ClientRemoved(client
2359
.dbus_object_path,
2360
client.name)
3554
2361
client_settings.clear()
3555
2362
3556
2363
atexit.register(cleanup)
3557
3558
for client in tcp_server.clients.values():
2364
2365
for client in tcp_server.clients.itervalues():
3559
2366
if use_dbus:
3560
# Emit D-Bus signal for adding
3561
mandos_dbus_service.client_added_signal(client)
2367
# Emit D-Bus signal
2368
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3562
2369
# Need to initiate checking of clients
3563
2370
if client.enabled:
3564
2371
client.init_checker()
3565
2372
2373
3566
2374
tcp_server.enable()
3567
2375
tcp_server.server_activate()
3568
2376
3569
2377
# Find out what port we got
3570
if zeroconf:
3571
service.port = tcp_server.socket.getsockname()[1]
2378
service.port = tcp_server.socket.getsockname()[1]
3572
2379
if use_ipv6:
3573
2380
logger.info("Now listening on address %r, port %d,"
3574
" flowinfo %d, scope_id %d",
3575
*tcp_server.socket.getsockname())
2381
" flowinfo %d, scope_id %d"
2382
% tcp_server.socket.getsockname())
3576
2383
else: # IPv4
3577
logger.info("Now listening on address %r, port %d",
3578
*tcp_server.socket.getsockname())
3579
3580
# service.interface = tcp_server.socket.getsockname()[3]
3581
2384
logger.info("Now listening on address %r, port %d"
2385
% tcp_server.socket.getsockname())
2386
2387
#service.interface = tcp_server.socket.getsockname()[3]
2388
3582
2389
try:
3583
if zeroconf:
3584
# From the Avahi example code
3585
try:
3586
service.activate()
3587
except dbus.exceptions.DBusException as error:
3588
logger.critical("D-Bus Exception", exc_info=error)
3589
cleanup()
3590
sys.exit(1)
3591
# End of Avahi example code
3592
3593
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3594
lambda *args, **kwargs:
3595
(tcp_server.handle_request
3596
(*args[2:], **kwargs) or True))
3597
2390
# From the Avahi example code
2391
try:
2392
service.activate()
2393
except dbus.exceptions.DBusException as error:
2394
logger.critical("DBusException: %s", error)
2395
cleanup()
2396
sys.exit(1)
2397
# End of Avahi example code
2398
2399
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2400
lambda *args, **kwargs:
2401
(tcp_server.handle_request
2402
(*args[2:], **kwargs) or True))
2403
3598
2404
logger.debug("Starting main loop")
3599
2405
main_loop.run()
3600
2406
except AvahiError as error:
3601
logger.critical("Avahi Error", exc_info=error)
2407
logger.critical("AvahiError: %s", error)
3602
2408
cleanup()
3603
2409
sys.exit(1)
3604
2410
except KeyboardInterrupt:
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0