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- Committer: Björn Påhlsson
- Date: 2011-11-09 17:16:03 UTC
- mfrom: (518.1.1 mandos-persistent)
- Revision ID: belorn@fukt.bsnet.se-20111109171603-srz21uoclpldp5ve
merge persistent state
- 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 = "1.8.0"
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
It is instantiated once, and simulates having an Avahi module."""
281
IF_UNSPEC = -1 # avahi-common/address.h
282
PROTO_UNSPEC = -1 # avahi-common/address.h
283
PROTO_INET = 0 # avahi-common/address.h
284
PROTO_INET6 = 1 # avahi-common/address.h
285
DBUS_NAME = "org.freedesktop.Avahi"
286
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
287
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
288
DBUS_PATH_SERVER = "/"
289
290
def string_array_to_txt_array(self, t):
291
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
292
for s in t), signature="ay")
293
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
294
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
295
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
296
SERVER_INVALID = 0 # avahi-common/defs.h
297
SERVER_REGISTERING = 1 # avahi-common/defs.h
298
SERVER_RUNNING = 2 # avahi-common/defs.h
299
SERVER_COLLISION = 3 # avahi-common/defs.h
300
SERVER_FAILURE = 4 # avahi-common/defs.h
301
avahi = Avahi()
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)
302
107
303
108
304
109
class AvahiError(Exception):
305
110
def __init__(self, value, *args, **kwargs):
306
111
self.value = value
307
return super(AvahiError, self).__init__(value, *args,
308
**kwargs)
309
112
super(AvahiError, self).__init__(value, *args, **kwargs)
113
def __unicode__(self):
114
return unicode(repr(self.value))
310
115
311
116
class AvahiServiceError(AvahiError):
312
117
pass
313
118
314
315
119
class AvahiGroupError(AvahiError):
316
120
pass
317
121
318
122
319
123
class AvahiService(object):
320
124
"""An Avahi (Zeroconf) service.
321
125
322
126
Attributes:
323
127
interface: integer; avahi.IF_UNSPEC or an interface index.
324
128
Used to optionally bind to the specified interface.
325
129
name: string; Example: 'Mandos'
326
130
type: string; Example: '_mandos._tcp'.
327
See <https://www.iana.org/assignments/service-names-port-numbers>
131
See <http://www.dns-sd.org/ServiceTypes.html>
328
132
port: integer; what port to announce
329
133
TXT: list of strings; TXT record for the service
330
134
domain: string; Domain to publish on, default to .local if empty.
336
140
server: D-Bus Server
337
141
bus: dbus.SystemBus()
338
142
"""
339
340
def __init__(self,
341
interface=avahi.IF_UNSPEC,
342
name=None,
343
servicetype=None,
344
port=None,
345
TXT=None,
346
domain="",
347
host="",
348
max_renames=32768,
349
protocol=avahi.PROTO_UNSPEC,
350
bus=None):
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):
351
147
self.interface = interface
352
148
self.name = name
353
149
self.type = servicetype
362
158
self.server = None
363
159
self.bus = bus
364
160
self.entry_group_state_changed_match = None
365
366
def rename(self, remove=True):
161
def rename(self):
367
162
"""Derived from the Avahi example code"""
368
163
if self.rename_count >= self.max_renames:
369
164
logger.critical("No suitable Zeroconf service name found"
370
165
" after %i retries, exiting.",
371
166
self.rename_count)
372
167
raise AvahiServiceError("Too many renames")
373
self.name = str(
374
self.server.GetAlternativeServiceName(self.name))
375
self.rename_count += 1
168
self.name = unicode(self.server
169
.GetAlternativeServiceName(self.name))
376
170
logger.info("Changing Zeroconf service name to %r ...",
377
171
self.name)
378
if remove:
379
self.remove()
172
self.remove()
380
173
try:
381
174
self.add()
382
175
except dbus.exceptions.DBusException as error:
383
if (error.get_dbus_name()
384
== "org.freedesktop.Avahi.CollisionError"):
385
logger.info("Local Zeroconf service name collision.")
386
return self.rename(remove=False)
387
else:
388
logger.critical("D-Bus Exception", exc_info=error)
389
self.cleanup()
390
os._exit(1)
391
176
logger.critical("DBusException: %s", error)
177
self.cleanup()
178
os._exit(1)
179
self.rename_count += 1
392
180
def remove(self):
393
181
"""Derived from the Avahi example code"""
394
182
if self.entry_group_state_changed_match is not None:
396
184
self.entry_group_state_changed_match = None
397
185
if self.group is not None:
398
186
self.group.Reset()
399
400
187
def add(self):
401
188
"""Derived from the Avahi example code"""
402
189
self.remove()
419
206
dbus.UInt16(self.port),
420
207
avahi.string_array_to_txt_array(self.TXT))
421
208
self.group.Commit()
422
423
209
def entry_group_state_changed(self, state, error):
424
210
"""Derived from the Avahi example code"""
425
211
logger.debug("Avahi entry group state change: %i", state)
426
212
427
213
if state == avahi.ENTRY_GROUP_ESTABLISHED:
428
214
logger.debug("Zeroconf service established.")
429
215
elif state == avahi.ENTRY_GROUP_COLLISION:
431
217
self.rename()
432
218
elif state == avahi.ENTRY_GROUP_FAILURE:
433
219
logger.critical("Avahi: Error in group state changed %s",
434
str(error))
435
raise AvahiGroupError("State changed: {!s}".format(error))
436
220
unicode(error))
221
raise AvahiGroupError("State changed: %s"
222
% unicode(error))
437
223
def cleanup(self):
438
224
"""Derived from the Avahi example code"""
439
225
if self.group is not None:
440
226
try:
441
227
self.group.Free()
442
228
except (dbus.exceptions.UnknownMethodException,
443
dbus.exceptions.DBusException):
229
dbus.exceptions.DBusException) as e:
444
230
pass
445
231
self.group = None
446
232
self.remove()
447
448
233
def server_state_changed(self, state, error=None):
449
234
"""Derived from the Avahi example code"""
450
235
logger.debug("Avahi server state change: %i", state)
451
bad_states = {
452
avahi.SERVER_INVALID: "Zeroconf server invalid",
453
avahi.SERVER_REGISTERING: None,
454
avahi.SERVER_COLLISION: "Zeroconf server name collision",
455
avahi.SERVER_FAILURE: "Zeroconf server failure",
456
}
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" }
457
243
if state in bad_states:
458
244
if bad_states[state] is not None:
459
245
if error is None:
462
248
logger.error(bad_states[state] + ": %r", error)
463
249
self.cleanup()
464
250
elif state == avahi.SERVER_RUNNING:
465
try:
466
self.add()
467
except dbus.exceptions.DBusException as error:
468
if (error.get_dbus_name()
469
== "org.freedesktop.Avahi.CollisionError"):
470
logger.info("Local Zeroconf service name"
471
" collision.")
472
return self.rename(remove=False)
473
else:
474
logger.critical("D-Bus Exception", exc_info=error)
475
self.cleanup()
476
os._exit(1)
251
self.add()
477
252
else:
478
253
if error is None:
479
254
logger.debug("Unknown state: %r", state)
480
255
else:
481
256
logger.debug("Unknown state: %r: %r", state, error)
482
483
257
def activate(self):
484
258
"""Derived from the Avahi example code"""
485
259
if self.server is None:
489
263
follow_name_owner_changes=True),
490
264
avahi.DBUS_INTERFACE_SERVER)
491
265
self.server.connect_to_signal("StateChanged",
492
self.server_state_changed)
266
self.server_state_changed)
493
267
self.server_state_changed(self.server.GetState())
494
268
495
496
269
class AvahiServiceToSyslog(AvahiService):
497
def rename(self, *args, **kwargs):
270
def rename(self):
498
271
"""Add the new name to the syslog messages"""
499
ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
500
syslogger.setFormatter(logging.Formatter(
501
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
502
.format(self.name)))
272
ret = AvahiService.rename(self)
273
syslogger.setFormatter(logging.Formatter
274
('Mandos (%s) [%%(process)d]:'
275
' %%(levelname)s: %%(message)s'
276
% self.name))
503
277
return ret
504
278
505
506
# Pretend that we have a GnuTLS module
507
class GnuTLS(object):
508
"""This isn't so much a class as it is a module-like namespace.
509
It is instantiated once, and simulates having a GnuTLS module."""
510
511
library = ctypes.util.find_library("gnutls")
512
if library is None:
513
library = ctypes.util.find_library("gnutls-deb0")
514
_library = ctypes.cdll.LoadLibrary(library)
515
del library
516
_need_version = b"3.3.0"
517
_tls_rawpk_version = b"3.6.6"
518
519
def __init__(self):
520
# Need to use "self" here, since this method is called before
521
# the assignment to the "gnutls" global variable happens.
522
if self.check_version(self._need_version) is None:
523
raise self.Error("Needs GnuTLS {} or later"
524
.format(self._need_version))
525
526
# Unless otherwise indicated, the constants and types below are
527
# all from the gnutls/gnutls.h C header file.
528
529
# Constants
530
E_SUCCESS = 0
531
E_INTERRUPTED = -52
532
E_AGAIN = -28
533
CRT_OPENPGP = 2
534
CRT_RAWPK = 3
535
CLIENT = 2
536
SHUT_RDWR = 0
537
CRD_CERTIFICATE = 1
538
E_NO_CERTIFICATE_FOUND = -49
539
X509_FMT_DER = 0
540
NO_TICKETS = 1<<10
541
ENABLE_RAWPK = 1<<18
542
CTYPE_PEERS = 3
543
KEYID_USE_SHA256 = 1 # gnutls/x509.h
544
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
545
546
# Types
547
class session_int(ctypes.Structure):
548
_fields_ = []
549
session_t = ctypes.POINTER(session_int)
550
551
class certificate_credentials_st(ctypes.Structure):
552
_fields_ = []
553
certificate_credentials_t = ctypes.POINTER(
554
certificate_credentials_st)
555
certificate_type_t = ctypes.c_int
556
557
class datum_t(ctypes.Structure):
558
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
559
('size', ctypes.c_uint)]
560
561
class openpgp_crt_int(ctypes.Structure):
562
_fields_ = []
563
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
564
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
565
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
566
credentials_type_t = ctypes.c_int
567
transport_ptr_t = ctypes.c_void_p
568
close_request_t = ctypes.c_int
569
570
# Exceptions
571
class Error(Exception):
572
# We need to use the class name "GnuTLS" here, since this
573
# exception might be raised from within GnuTLS.__init__,
574
# which is called before the assignment to the "gnutls"
575
# global variable has happened.
576
def __init__(self, message=None, code=None, args=()):
577
# Default usage is by a message string, but if a return
578
# code is passed, convert it to a string with
579
# gnutls.strerror()
580
self.code = code
581
if message is None and code is not None:
582
message = GnuTLS.strerror(code)
583
return super(GnuTLS.Error, self).__init__(
584
message, *args)
585
586
class CertificateSecurityError(Error):
587
pass
588
589
# Classes
590
class Credentials(object):
591
def __init__(self):
592
self._c_object = gnutls.certificate_credentials_t()
593
gnutls.certificate_allocate_credentials(
594
ctypes.byref(self._c_object))
595
self.type = gnutls.CRD_CERTIFICATE
596
597
def __del__(self):
598
gnutls.certificate_free_credentials(self._c_object)
599
600
class ClientSession(object):
601
def __init__(self, socket, credentials=None):
602
self._c_object = gnutls.session_t()
603
gnutls_flags = gnutls.CLIENT
604
if gnutls.check_version("3.5.6"):
605
gnutls_flags |= gnutls.NO_TICKETS
606
if gnutls.has_rawpk:
607
gnutls_flags |= gnutls.ENABLE_RAWPK
608
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
609
del gnutls_flags
610
gnutls.set_default_priority(self._c_object)
611
gnutls.transport_set_ptr(self._c_object, socket.fileno())
612
gnutls.handshake_set_private_extensions(self._c_object,
613
True)
614
self.socket = socket
615
if credentials is None:
616
credentials = gnutls.Credentials()
617
gnutls.credentials_set(self._c_object, credentials.type,
618
ctypes.cast(credentials._c_object,
619
ctypes.c_void_p))
620
self.credentials = credentials
621
622
def __del__(self):
623
gnutls.deinit(self._c_object)
624
625
def handshake(self):
626
return gnutls.handshake(self._c_object)
627
628
def send(self, data):
629
data = bytes(data)
630
data_len = len(data)
631
while data_len > 0:
632
data_len -= gnutls.record_send(self._c_object,
633
data[-data_len:],
634
data_len)
635
636
def bye(self):
637
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
638
639
# Error handling functions
640
def _error_code(result):
641
"""A function to raise exceptions on errors, suitable
642
for the 'restype' attribute on ctypes functions"""
643
if result >= 0:
644
return result
645
if result == gnutls.E_NO_CERTIFICATE_FOUND:
646
raise gnutls.CertificateSecurityError(code=result)
647
raise gnutls.Error(code=result)
648
649
def _retry_on_error(result, func, arguments):
650
"""A function to retry on some errors, suitable
651
for the 'errcheck' attribute on ctypes functions"""
652
while result < 0:
653
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
654
return _error_code(result)
655
result = func(*arguments)
656
return result
657
658
# Unless otherwise indicated, the function declarations below are
659
# all from the gnutls/gnutls.h C header file.
660
661
# Functions
662
priority_set_direct = _library.gnutls_priority_set_direct
663
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
664
ctypes.POINTER(ctypes.c_char_p)]
665
priority_set_direct.restype = _error_code
666
667
init = _library.gnutls_init
668
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
669
init.restype = _error_code
670
671
set_default_priority = _library.gnutls_set_default_priority
672
set_default_priority.argtypes = [session_t]
673
set_default_priority.restype = _error_code
674
675
record_send = _library.gnutls_record_send
676
record_send.argtypes = [session_t, ctypes.c_void_p,
677
ctypes.c_size_t]
678
record_send.restype = ctypes.c_ssize_t
679
record_send.errcheck = _retry_on_error
680
681
certificate_allocate_credentials = (
682
_library.gnutls_certificate_allocate_credentials)
683
certificate_allocate_credentials.argtypes = [
684
ctypes.POINTER(certificate_credentials_t)]
685
certificate_allocate_credentials.restype = _error_code
686
687
certificate_free_credentials = (
688
_library.gnutls_certificate_free_credentials)
689
certificate_free_credentials.argtypes = [
690
certificate_credentials_t]
691
certificate_free_credentials.restype = None
692
693
handshake_set_private_extensions = (
694
_library.gnutls_handshake_set_private_extensions)
695
handshake_set_private_extensions.argtypes = [session_t,
696
ctypes.c_int]
697
handshake_set_private_extensions.restype = None
698
699
credentials_set = _library.gnutls_credentials_set
700
credentials_set.argtypes = [session_t, credentials_type_t,
701
ctypes.c_void_p]
702
credentials_set.restype = _error_code
703
704
strerror = _library.gnutls_strerror
705
strerror.argtypes = [ctypes.c_int]
706
strerror.restype = ctypes.c_char_p
707
708
certificate_type_get = _library.gnutls_certificate_type_get
709
certificate_type_get.argtypes = [session_t]
710
certificate_type_get.restype = _error_code
711
712
certificate_get_peers = _library.gnutls_certificate_get_peers
713
certificate_get_peers.argtypes = [session_t,
714
ctypes.POINTER(ctypes.c_uint)]
715
certificate_get_peers.restype = ctypes.POINTER(datum_t)
716
717
global_set_log_level = _library.gnutls_global_set_log_level
718
global_set_log_level.argtypes = [ctypes.c_int]
719
global_set_log_level.restype = None
720
721
global_set_log_function = _library.gnutls_global_set_log_function
722
global_set_log_function.argtypes = [log_func]
723
global_set_log_function.restype = None
724
725
deinit = _library.gnutls_deinit
726
deinit.argtypes = [session_t]
727
deinit.restype = None
728
729
handshake = _library.gnutls_handshake
730
handshake.argtypes = [session_t]
731
handshake.restype = _error_code
732
handshake.errcheck = _retry_on_error
733
734
transport_set_ptr = _library.gnutls_transport_set_ptr
735
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
736
transport_set_ptr.restype = None
737
738
bye = _library.gnutls_bye
739
bye.argtypes = [session_t, close_request_t]
740
bye.restype = _error_code
741
bye.errcheck = _retry_on_error
742
743
check_version = _library.gnutls_check_version
744
check_version.argtypes = [ctypes.c_char_p]
745
check_version.restype = ctypes.c_char_p
746
747
has_rawpk = bool(check_version(_tls_rawpk_version))
748
749
if has_rawpk:
750
# Types
751
class pubkey_st(ctypes.Structure):
752
_fields = []
753
pubkey_t = ctypes.POINTER(pubkey_st)
754
755
x509_crt_fmt_t = ctypes.c_int
756
757
# All the function declarations below are from gnutls/abstract.h
758
pubkey_init = _library.gnutls_pubkey_init
759
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
760
pubkey_init.restype = _error_code
761
762
pubkey_import = _library.gnutls_pubkey_import
763
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
764
x509_crt_fmt_t]
765
pubkey_import.restype = _error_code
766
767
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
768
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
769
ctypes.POINTER(ctypes.c_ubyte),
770
ctypes.POINTER(ctypes.c_size_t)]
771
pubkey_get_key_id.restype = _error_code
772
773
pubkey_deinit = _library.gnutls_pubkey_deinit
774
pubkey_deinit.argtypes = [pubkey_t]
775
pubkey_deinit.restype = None
776
else:
777
# All the function declarations below are from gnutls/openpgp.h
778
779
openpgp_crt_init = _library.gnutls_openpgp_crt_init
780
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
781
openpgp_crt_init.restype = _error_code
782
783
openpgp_crt_import = _library.gnutls_openpgp_crt_import
784
openpgp_crt_import.argtypes = [openpgp_crt_t,
785
ctypes.POINTER(datum_t),
786
openpgp_crt_fmt_t]
787
openpgp_crt_import.restype = _error_code
788
789
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
790
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
791
ctypes.POINTER(ctypes.c_uint)]
792
openpgp_crt_verify_self.restype = _error_code
793
794
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
795
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
796
openpgp_crt_deinit.restype = None
797
798
openpgp_crt_get_fingerprint = (
799
_library.gnutls_openpgp_crt_get_fingerprint)
800
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
801
ctypes.c_void_p,
802
ctypes.POINTER(
803
ctypes.c_size_t)]
804
openpgp_crt_get_fingerprint.restype = _error_code
805
806
if check_version("3.6.4"):
807
certificate_type_get2 = _library.gnutls_certificate_type_get2
808
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
809
certificate_type_get2.restype = _error_code
810
811
# Remove non-public functions
812
del _error_code, _retry_on_error
813
# Create the global "gnutls" object, simulating a module
814
gnutls = GnuTLS()
815
816
817
def call_pipe(connection, # : multiprocessing.Connection
818
func, *args, **kwargs):
819
"""This function is meant to be called by multiprocessing.Process
820
821
This function runs func(*args, **kwargs), and writes the resulting
822
return value on the provided multiprocessing.Connection.
823
"""
824
connection.send(func(*args, **kwargs))
825
connection.close()
826
827
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
828
285
class Client(object):
829
286
"""A representation of a client host served by this server.
830
287
831
288
Attributes:
832
approved: bool(); 'None' if not yet approved/disapproved
289
_approved: bool(); 'None' if not yet approved/disapproved
833
290
approval_delay: datetime.timedelta(); Time to wait for approval
834
291
approval_duration: datetime.timedelta(); Duration of one approval
835
292
checker: subprocess.Popen(); a running checker process used
836
293
to see if the client lives.
837
294
'None' if no process is running.
838
checker_callback_tag: a GLib event source tag, or None
295
checker_callback_tag: a gobject event source tag, or None
839
296
checker_command: string; External command which is run to check
840
297
if client lives. %() expansions are done at
841
298
runtime with vars(self) as dict, so that for
842
299
instance %(name)s can be used in the command.
843
checker_initiator_tag: a GLib event source tag, or None
300
checker_initiator_tag: a gobject event source tag, or None
844
301
created: datetime.datetime(); (UTC) object creation
845
302
client_structure: Object describing what attributes a client has
846
303
and is used for storing the client at exit
847
304
current_checker_command: string; current running checker_command
848
disable_initiator_tag: a GLib event source tag, or None
305
disable_initiator_tag: a gobject event source tag, or None
849
306
enabled: bool()
850
307
fingerprint: string (40 or 32 hexadecimal digits); used to
851
uniquely identify an OpenPGP client
852
key_id: string (64 hexadecimal digits); used to uniquely identify
853
a client using raw public keys
308
uniquely identify the client
854
309
host: string; available for use by the checker command
855
310
interval: datetime.timedelta(); How often to start a new checker
856
311
last_approval_request: datetime.datetime(); (UTC) or None
857
312
last_checked_ok: datetime.datetime(); (UTC) or None
858
last_checker_status: integer between 0 and 255 reflecting exit
859
status of last checker. -1 reflects crashed
860
checker, -2 means no checker completed yet.
861
last_checker_signal: The signal which killed the last checker, if
862
last_checker_status is -1
863
last_enabled: datetime.datetime(); (UTC) or None
313
last_checker_status: integer between 0 and 255 reflecting exit status
314
of last checker. -1 reflect crashed checker,
315
or None.
316
last_enabled: datetime.datetime(); (UTC)
864
317
name: string; from the config file, used in log messages and
865
318
D-Bus identifiers
866
319
secret: bytestring; sent verbatim (over TLS) to client
867
320
timeout: datetime.timedelta(); How long from last_checked_ok
868
321
until this client is disabled
869
extended_timeout: extra long timeout when secret has been sent
322
extended_timeout: extra long timeout when password has been sent
870
323
runtime_expansions: Allowed attributes for runtime expansion.
871
324
expires: datetime.datetime(); time (UTC) when a client will be
872
325
disabled, or None
873
server_settings: The server_settings dict from main()
874
326
"""
875
327
876
328
runtime_expansions = ("approval_delay", "approval_duration",
877
"created", "enabled", "expires", "key_id",
878
"fingerprint", "host", "interval",
879
"last_approval_request", "last_checked_ok",
329
"created", "enabled", "fingerprint",
330
"host", "interval", "last_checked_ok",
880
331
"last_enabled", "name", "timeout")
881
client_defaults = {
882
"timeout": "PT5M",
883
"extended_timeout": "PT15M",
884
"interval": "PT2M",
885
"checker": "fping -q -- %%(host)s",
886
"host": "",
887
"approval_delay": "PT0S",
888
"approval_duration": "PT1S",
889
"approved_by_default": "True",
890
"enabled": "True",
891
}
892
893
@staticmethod
894
def config_parser(config):
895
"""Construct a new dict of client settings of this form:
896
{ client_name: {setting_name: value, ...}, ...}
897
with exceptions for any special settings as defined above.
898
NOTE: Must be a pure function. Must return the same result
899
value given the same arguments.
900
"""
901
settings = {}
902
for client_name in config.sections():
903
section = dict(config.items(client_name))
904
client = settings[client_name] = {}
905
906
client["host"] = section["host"]
907
# Reformat values from string types to Python types
908
client["approved_by_default"] = config.getboolean(
909
client_name, "approved_by_default")
910
client["enabled"] = config.getboolean(client_name,
911
"enabled")
912
913
# Uppercase and remove spaces from key_id and fingerprint
914
# for later comparison purposes with return value from the
915
# key_id() and fingerprint() functions
916
client["key_id"] = (section.get("key_id", "").upper()
917
.replace(" ", ""))
918
client["fingerprint"] = (section["fingerprint"].upper()
919
.replace(" ", ""))
920
if "secret" in section:
921
client["secret"] = codecs.decode(section["secret"]
922
.encode("utf-8"),
923
"base64")
924
elif "secfile" in section:
925
with open(os.path.expanduser(os.path.expandvars
926
(section["secfile"])),
927
"rb") as secfile:
928
client["secret"] = secfile.read()
929
else:
930
raise TypeError("No secret or secfile for section {}"
931
.format(section))
932
client["timeout"] = string_to_delta(section["timeout"])
933
client["extended_timeout"] = string_to_delta(
934
section["extended_timeout"])
935
client["interval"] = string_to_delta(section["interval"])
936
client["approval_delay"] = string_to_delta(
937
section["approval_delay"])
938
client["approval_duration"] = string_to_delta(
939
section["approval_duration"])
940
client["checker_command"] = section["checker"]
941
client["last_approval_request"] = None
942
client["last_checked_ok"] = None
943
client["last_checker_status"] = -2
944
945
return settings
946
947
def __init__(self, settings, name=None, server_settings=None):
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."""
948
352
self.name = name
949
if server_settings is None:
950
server_settings = {}
951
self.server_settings = server_settings
952
# adding all client settings
953
for setting, value in settings.items():
954
setattr(self, setting, value)
955
956
if self.enabled:
957
if not hasattr(self, "last_enabled"):
958
self.last_enabled = datetime.datetime.utcnow()
959
if not hasattr(self, "expires"):
960
self.expires = (datetime.datetime.utcnow()
961
+ self.timeout)
962
else:
963
self.last_enabled = None
964
self.expires = None
965
353
if config is None:
354
config = {}
966
355
logger.debug("Creating client %r", self.name)
967
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(" ", ""))
968
361
logger.debug(" Fingerprint: %s", self.fingerprint)
969
self.created = settings.get("created",
970
datetime.datetime.utcnow())
971
972
# 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"])
973
383
self.checker = None
974
384
self.checker_initiator_tag = None
975
385
self.disable_initiator_tag = None
386
self.expires = datetime.datetime.utcnow() + self.timeout
976
387
self.checker_callback_tag = None
388
self.checker_command = config["checker"]
977
389
self.current_checker_command = None
978
self.approved = None
390
self._approved = None
391
self.approved_by_default = config.get("approved_by_default",
392
True)
979
393
self.approvals_pending = 0
980
self.changedstate = multiprocessing_manager.Condition(
981
multiprocessing_manager.Lock())
982
self.client_structure = [attr
983
for attr in self.__dict__.keys()
984
if not attr.startswith("_")]
394
self.approval_delay = string_to_delta(
395
config["approval_delay"])
396
self.approval_duration = string_to_delta(
397
config["approval_duration"])
398
self.changedstate = (multiprocessing_manager
399
.Condition(multiprocessing_manager
400
.Lock()))
401
self.client_structure = [attr for attr in self.__dict__.iterkeys() if not attr.startswith("_")]
985
402
self.client_structure.append("client_structure")
986
403
987
for name, t in inspect.getmembers(
988
type(self), lambda obj: isinstance(obj, property)):
404
405
for name, t in inspect.getmembers(type(self),
406
lambda obj: isinstance(obj, property)):
989
407
if not name.startswith("_"):
990
408
self.client_structure.append(name)
991
409
992
410
# Send notice to process children that client state has changed
993
411
def send_changedstate(self):
994
412
with self.changedstate:
995
413
self.changedstate.notify_all()
996
414
997
415
def enable(self):
998
416
"""Start this client's checker and timeout hooks"""
999
417
if getattr(self, "enabled", False):
1000
418
# Already enabled
1001
419
return
420
self.send_changedstate()
1002
421
self.expires = datetime.datetime.utcnow() + self.timeout
1003
422
self.enabled = True
1004
423
self.last_enabled = datetime.datetime.utcnow()
1005
424
self.init_checker()
1006
self.send_changedstate()
1007
425
1008
426
def disable(self, quiet=True):
1009
427
"""Disable this client."""
1010
428
if not getattr(self, "enabled", False):
1011
429
return False
1012
430
if not quiet:
431
self.send_changedstate()
432
if not quiet:
1013
433
logger.info("Disabling client %s", self.name)
1014
if getattr(self, "disable_initiator_tag", None) is not None:
1015
GLib.source_remove(self.disable_initiator_tag)
434
if getattr(self, "disable_initiator_tag", False):
435
gobject.source_remove(self.disable_initiator_tag)
1016
436
self.disable_initiator_tag = None
1017
437
self.expires = None
1018
if getattr(self, "checker_initiator_tag", None) is not None:
1019
GLib.source_remove(self.checker_initiator_tag)
438
if getattr(self, "checker_initiator_tag", False):
439
gobject.source_remove(self.checker_initiator_tag)
1020
440
self.checker_initiator_tag = None
1021
441
self.stop_checker()
1022
442
self.enabled = False
1023
if not quiet:
1024
self.send_changedstate()
1025
# Do not run this again if called by a GLib.timeout_add
443
# Do not run this again if called by a gobject.timeout_add
1026
444
return False
1027
445
1028
446
def __del__(self):
1029
447
self.disable()
1030
448
1031
449
def init_checker(self):
1032
450
# Schedule a new checker to be started an 'interval' from now,
1033
451
# and every interval from then on.
1034
if self.checker_initiator_tag is not None:
1035
GLib.source_remove(self.checker_initiator_tag)
1036
self.checker_initiator_tag = GLib.timeout_add(
1037
int(self.interval.total_seconds() * 1000),
1038
self.start_checker)
452
self.checker_initiator_tag = (gobject.timeout_add
453
(self.interval_milliseconds(),
454
self.start_checker))
1039
455
# Schedule a disable() when 'timeout' has passed
1040
if self.disable_initiator_tag is not None:
1041
GLib.source_remove(self.disable_initiator_tag)
1042
self.disable_initiator_tag = GLib.timeout_add(
1043
int(self.timeout.total_seconds() * 1000), self.disable)
456
self.disable_initiator_tag = (gobject.timeout_add
457
(self.timeout_milliseconds(),
458
self.disable))
1044
459
# Also start a new checker *right now*.
1045
460
self.start_checker()
1046
461
1047
def checker_callback(self, source, condition, connection,
1048
command):
462
463
def checker_callback(self, pid, condition, command):
1049
464
"""The checker has completed, so take appropriate actions."""
1050
465
self.checker_callback_tag = None
1051
466
self.checker = None
1052
# Read return code from connection (see call_pipe)
1053
returncode = connection.recv()
1054
connection.close()
1055
1056
if returncode >= 0:
1057
self.last_checker_status = returncode
1058
self.last_checker_signal = None
467
if os.WIFEXITED(condition):
468
self.last_checker_status = os.WEXITSTATUS(condition)
1059
469
if self.last_checker_status == 0:
1060
470
logger.info("Checker for %(name)s succeeded",
1061
471
vars(self))
1062
472
self.checked_ok()
1063
473
else:
1064
logger.info("Checker for %(name)s failed", vars(self))
474
logger.info("Checker for %(name)s failed",
475
vars(self))
1065
476
else:
1066
477
self.last_checker_status = -1
1067
self.last_checker_signal = -returncode
1068
478
logger.warning("Checker for %(name)s crashed?",
1069
479
vars(self))
1070
return False
1071
1072
def checked_ok(self):
1073
"""Assert that the client has been seen, alive and well."""
1074
self.last_checked_ok = datetime.datetime.utcnow()
1075
self.last_checker_status = 0
1076
self.last_checker_signal = None
1077
self.bump_timeout()
1078
1079
def bump_timeout(self, timeout=None):
1080
"""Bump up the timeout for this client."""
480
481
def checked_ok(self, timeout=None):
482
"""Bump up the timeout for this client.
483
484
This should only be called when the client has been seen,
485
alive and well.
486
"""
1081
487
if timeout is None:
1082
488
timeout = self.timeout
489
self.last_checked_ok = datetime.datetime.utcnow()
1083
490
if self.disable_initiator_tag is not None:
1084
GLib.source_remove(self.disable_initiator_tag)
1085
self.disable_initiator_tag = None
491
gobject.source_remove(self.disable_initiator_tag)
1086
492
if getattr(self, "enabled", False):
1087
self.disable_initiator_tag = GLib.timeout_add(
1088
int(timeout.total_seconds() * 1000), self.disable)
493
self.disable_initiator_tag = (gobject.timeout_add
494
(_timedelta_to_milliseconds
495
(timeout), self.disable))
1089
496
self.expires = datetime.datetime.utcnow() + timeout
1090
497
1091
498
def need_approval(self):
1092
499
self.last_approval_request = datetime.datetime.utcnow()
1093
500
1094
501
def start_checker(self):
1095
502
"""Start a new checker subprocess if one is not running.
1096
503
1097
504
If a checker already exists, leave it running and do
1098
505
nothing."""
1099
506
# The reason for not killing a running checker is that if we
1100
# did that, and if a checker (for some reason) started running
1101
# slowly and taking more than 'interval' time, then the client
1102
# would inevitably timeout, since no checker would get a
1103
# chance to run to completion. If we instead leave running
507
# did that, then if a checker (for some reason) started
508
# running slowly and taking more than 'interval' time, the
509
# client would inevitably timeout, since no checker would get
510
# a chance to run to completion. If we instead leave running
1104
511
# checkers alone, the checker would have to take more time
1105
512
# than 'timeout' for the client to be disabled, which is as it
1106
513
# should be.
1107
1108
if self.checker is not None and not self.checker.is_alive():
1109
logger.warning("Checker was not alive; joining")
1110
self.checker.join()
1111
self.checker = None
514
515
# If a checker exists, make sure it is not a zombie
516
try:
517
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
518
except (AttributeError, OSError) as error:
519
if (isinstance(error, OSError)
520
and error.errno != errno.ECHILD):
521
raise error
522
else:
523
if pid:
524
logger.warning("Checker was a zombie")
525
gobject.source_remove(self.checker_callback_tag)
526
self.checker_callback(pid, status,
527
self.current_checker_command)
1112
528
# Start a new checker if needed
1113
529
if self.checker is None:
1114
# Escape attributes for the shell
1115
escaped_attrs = {
1116
attr: re.escape(str(getattr(self, attr)))
1117
for attr in self.runtime_expansions}
1118
530
try:
1119
command = self.checker_command % escaped_attrs
1120
except TypeError as error:
1121
logger.error('Could not format string "%s"',
1122
self.checker_command,
1123
exc_info=error)
1124
return True # Try again later
531
# In case checker_command has exactly one % operator
532
command = self.checker_command % self.host
533
except TypeError:
534
# Escape attributes for the shell
535
escaped_attrs = dict(
536
(attr,
537
re.escape(unicode(str(getattr(self, attr, "")),
538
errors=
539
'replace')))
540
for attr in
541
self.runtime_expansions)
542
543
try:
544
command = self.checker_command % escaped_attrs
545
except TypeError as error:
546
logger.error('Could not format string "%s":'
547
' %s', self.checker_command, error)
548
return True # Try again later
1125
549
self.current_checker_command = command
1126
logger.info("Starting checker %r for %s", command,
1127
self.name)
1128
# We don't need to redirect stdout and stderr, since
1129
# in normal mode, that is already done by daemon(),
1130
# and in debug mode we don't want to. (Stdin is
1131
# always replaced by /dev/null.)
1132
# The exception is when not debugging but nevertheless
1133
# running in the foreground; use the previously
1134
# created wnull.
1135
popen_args = {"close_fds": True,
1136
"shell": True,
1137
"cwd": "/"}
1138
if (not self.server_settings["debug"]
1139
and self.server_settings["foreground"]):
1140
popen_args.update({"stdout": wnull,
1141
"stderr": wnull})
1142
pipe = multiprocessing.Pipe(duplex=False)
1143
self.checker = multiprocessing.Process(
1144
target=call_pipe,
1145
args=(pipe[1], subprocess.call, command),
1146
kwargs=popen_args)
1147
self.checker.start()
1148
self.checker_callback_tag = GLib.io_add_watch(
1149
pipe[0].fileno(), GLib.IO_IN,
1150
self.checker_callback, pipe[0], command)
1151
# Re-run this periodically if run by GLib.timeout_add
550
try:
551
logger.info("Starting checker %r for %s",
552
command, self.name)
553
# We don't need to redirect stdout and stderr, since
554
# in normal mode, that is already done by daemon(),
555
# and in debug mode we don't want to. (Stdin is
556
# always replaced by /dev/null.)
557
self.checker = subprocess.Popen(command,
558
close_fds=True,
559
shell=True, cwd="/")
560
self.checker_callback_tag = (gobject.child_watch_add
561
(self.checker.pid,
562
self.checker_callback,
563
data=command))
564
# The checker may have completed before the gobject
565
# watch was added. Check for this.
566
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
567
if pid:
568
gobject.source_remove(self.checker_callback_tag)
569
self.checker_callback(pid, status, command)
570
except OSError as error:
571
logger.error("Failed to start subprocess: %s",
572
error)
573
# Re-run this periodically if run by gobject.timeout_add
1152
574
return True
1153
575
1154
576
def stop_checker(self):
1155
577
"""Force the checker process, if any, to stop."""
1156
578
if self.checker_callback_tag:
1157
GLib.source_remove(self.checker_callback_tag)
579
gobject.source_remove(self.checker_callback_tag)
1158
580
self.checker_callback_tag = None
1159
581
if getattr(self, "checker", None) is None:
1160
582
return
1161
583
logger.debug("Stopping checker for %(name)s", vars(self))
1162
self.checker.terminate()
584
try:
585
os.kill(self.checker.pid, signal.SIGTERM)
586
#time.sleep(0.5)
587
#if self.checker.poll() is None:
588
# os.kill(self.checker.pid, signal.SIGKILL)
589
except OSError as error:
590
if error.errno != errno.ESRCH: # No such process
591
raise
1163
592
self.checker = None
1164
593
1165
1166
def dbus_service_property(dbus_interface,
1167
signature="v",
1168
access="readwrite",
1169
byte_arrays=False):
594
# Encrypts a client secret and stores it in a varible encrypted_secret
595
def encrypt_secret(self, key):
596
# Encryption-key need to be of a specific size, so we hash inputed key
597
hasheng = hashlib.sha256()
598
hasheng.update(key)
599
encryptionkey = hasheng.digest()
600
601
# Create validation hash so we know at decryption if it was sucessful
602
hasheng = hashlib.sha256()
603
hasheng.update(self.secret)
604
validationhash = hasheng.digest()
605
606
# Encrypt secret
607
iv = os.urandom(Crypto.Cipher.AES.block_size)
608
ciphereng = Crypto.Cipher.AES.new(encryptionkey,
609
Crypto.Cipher.AES.MODE_CFB, iv)
610
ciphertext = ciphereng.encrypt(validationhash+self.secret)
611
self.encrypted_secret = (ciphertext, iv)
612
613
# Decrypt a encrypted client secret
614
def decrypt_secret(self, key):
615
# Decryption-key need to be of a specific size, so we hash inputed key
616
hasheng = hashlib.sha256()
617
hasheng.update(key)
618
encryptionkey = hasheng.digest()
619
620
# Decrypt encrypted secret
621
ciphertext, iv = self.encrypted_secret
622
ciphereng = Crypto.Cipher.AES.new(encryptionkey,
623
Crypto.Cipher.AES.MODE_CFB, iv)
624
plain = ciphereng.decrypt(ciphertext)
625
626
# Validate decrypted secret to know if it was succesful
627
hasheng = hashlib.sha256()
628
validationhash = plain[:hasheng.digest_size]
629
secret = plain[hasheng.digest_size:]
630
hasheng.update(secret)
631
632
# if validation fails, we use key as new secret. Otherwhise, we use
633
# the decrypted secret
634
if hasheng.digest() == validationhash:
635
self.secret = secret
636
else:
637
self.secret = key
638
del self.encrypted_secret
639
640
641
def dbus_service_property(dbus_interface, signature="v",
642
access="readwrite", byte_arrays=False):
1170
643
"""Decorators for marking methods of a DBusObjectWithProperties to
1171
644
become properties on the D-Bus.
1172
645
1173
646
The decorated method will be called with no arguments by "Get"
1174
647
and with one argument by "Set".
1175
648
1176
649
The parameters, where they are supported, are the same as
1177
650
dbus.service.method, except there is only "signature", since the
1178
651
type from Get() and the type sent to Set() is the same.
1181
654
# "Set" method, so we fail early here:
1182
655
if byte_arrays and signature != "ay":
1183
656
raise ValueError("Byte arrays not supported for non-'ay'"
1184
" signature {!r}".format(signature))
1185
657
" signature %r" % signature)
1186
658
def decorator(func):
1187
659
func._dbus_is_property = True
1188
660
func._dbus_interface = dbus_interface
1191
663
func._dbus_name = func.__name__
1192
664
if func._dbus_name.endswith("_dbus_property"):
1193
665
func._dbus_name = func._dbus_name[:-14]
1194
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
1195
return func
1196
1197
return decorator
1198
1199
1200
def dbus_interface_annotations(dbus_interface):
1201
"""Decorator for marking functions returning interface annotations
1202
1203
Usage:
1204
1205
@dbus_interface_annotations("org.example.Interface")
1206
def _foo(self): # Function name does not matter
1207
return {"org.freedesktop.DBus.Deprecated": "true",
1208
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1209
"false"}
1210
"""
1211
1212
def decorator(func):
1213
func._dbus_is_interface = True
1214
func._dbus_interface = dbus_interface
1215
func._dbus_name = dbus_interface
1216
return func
1217
1218
return decorator
1219
1220
1221
def dbus_annotations(annotations):
1222
"""Decorator to annotate D-Bus methods, signals or properties
1223
Usage:
1224
1225
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1226
"org.freedesktop.DBus.Property."
1227
"EmitsChangedSignal": "false"})
1228
@dbus_service_property("org.example.Interface", signature="b",
1229
access="r")
1230
def Property_dbus_property(self):
1231
return dbus.Boolean(False)
1232
1233
See also the DBusObjectWithAnnotations class.
1234
"""
1235
1236
def decorator(func):
1237
func._dbus_annotations = annotations
1238
return func
1239
666
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
667
return func
1240
668
return decorator
1241
669
1242
670
1243
671
class DBusPropertyException(dbus.exceptions.DBusException):
1244
672
"""A base class for D-Bus property-related exceptions
1245
673
"""
1246
pass
674
def __unicode__(self):
675
return unicode(str(self))
1247
676
1248
677
1249
678
class DBusPropertyAccessException(DBusPropertyException):
1258
687
pass
1259
688
1260
689
1261
class DBusObjectWithAnnotations(dbus.service.Object):
1262
"""A D-Bus object with annotations.
1263
1264
Classes inheriting from this can use the dbus_annotations
1265
decorator to add annotations to methods or signals.
1266
"""
1267
1268
@staticmethod
1269
def _is_dbus_thing(thing):
1270
"""Returns a function testing if an attribute is a D-Bus thing
1271
1272
If called like _is_dbus_thing("method") it returns a function
1273
suitable for use as predicate to inspect.getmembers().
1274
"""
1275
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1276
False)
1277
1278
def _get_all_dbus_things(self, thing):
1279
"""Returns a generator of (name, attribute) pairs
1280
"""
1281
return ((getattr(athing.__get__(self), "_dbus_name", name),
1282
athing.__get__(self))
1283
for cls in self.__class__.__mro__
1284
for name, athing in
1285
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1286
1287
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1288
out_signature="s",
1289
path_keyword='object_path',
1290
connection_keyword='connection')
1291
def Introspect(self, object_path, connection):
1292
"""Overloading of standard D-Bus method.
1293
1294
Inserts annotation tags on methods and signals.
1295
"""
1296
xmlstring = dbus.service.Object.Introspect(self, object_path,
1297
connection)
1298
try:
1299
document = xml.dom.minidom.parseString(xmlstring)
1300
1301
for if_tag in document.getElementsByTagName("interface"):
1302
# Add annotation tags
1303
for typ in ("method", "signal"):
1304
for tag in if_tag.getElementsByTagName(typ):
1305
annots = dict()
1306
for name, prop in (self.
1307
_get_all_dbus_things(typ)):
1308
if (name == tag.getAttribute("name")
1309
and prop._dbus_interface
1310
== if_tag.getAttribute("name")):
1311
annots.update(getattr(
1312
prop, "_dbus_annotations", {}))
1313
for name, value in annots.items():
1314
ann_tag = document.createElement(
1315
"annotation")
1316
ann_tag.setAttribute("name", name)
1317
ann_tag.setAttribute("value", value)
1318
tag.appendChild(ann_tag)
1319
# Add interface annotation tags
1320
for annotation, value in dict(
1321
itertools.chain.from_iterable(
1322
annotations().items()
1323
for name, annotations
1324
in self._get_all_dbus_things("interface")
1325
if name == if_tag.getAttribute("name")
1326
)).items():
1327
ann_tag = document.createElement("annotation")
1328
ann_tag.setAttribute("name", annotation)
1329
ann_tag.setAttribute("value", value)
1330
if_tag.appendChild(ann_tag)
1331
# Fix argument name for the Introspect method itself
1332
if (if_tag.getAttribute("name")
1333
== dbus.INTROSPECTABLE_IFACE):
1334
for cn in if_tag.getElementsByTagName("method"):
1335
if cn.getAttribute("name") == "Introspect":
1336
for arg in cn.getElementsByTagName("arg"):
1337
if (arg.getAttribute("direction")
1338
== "out"):
1339
arg.setAttribute("name",
1340
"xml_data")
1341
xmlstring = document.toxml("utf-8")
1342
document.unlink()
1343
except (AttributeError, xml.dom.DOMException,
1344
xml.parsers.expat.ExpatError) as error:
1345
logger.error("Failed to override Introspection method",
1346
exc_info=error)
1347
return xmlstring
1348
1349
1350
class DBusObjectWithProperties(DBusObjectWithAnnotations):
690
class DBusObjectWithProperties(dbus.service.Object):
1351
691
"""A D-Bus object with properties.
1352
692
1353
693
Classes inheriting from this can use the dbus_service_property
1354
694
decorator to expose methods as D-Bus properties. It exposes the
1355
695
standard Get(), Set(), and GetAll() methods on the D-Bus.
1356
696
"""
1357
697
698
@staticmethod
699
def _is_dbus_property(obj):
700
return getattr(obj, "_dbus_is_property", False)
701
702
def _get_all_dbus_properties(self):
703
"""Returns a generator of (name, attribute) pairs
704
"""
705
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
706
for cls in self.__class__.__mro__
707
for name, prop in
708
inspect.getmembers(cls, self._is_dbus_property))
709
1358
710
def _get_dbus_property(self, interface_name, property_name):
1359
711
"""Returns a bound method if one exists which is a D-Bus
1360
712
property with the specified name and interface.
1361
713
"""
1362
for cls in self.__class__.__mro__:
1363
for name, value in inspect.getmembers(
1364
cls, self._is_dbus_thing("property")):
714
for cls in self.__class__.__mro__:
715
for name, value in (inspect.getmembers
716
(cls, self._is_dbus_property)):
1365
717
if (value._dbus_name == property_name
1366
718
and value._dbus_interface == interface_name):
1367
719
return value.__get__(self)
1368
720
1369
721
# No such property
1370
raise DBusPropertyNotFound("{}:{}.{}".format(
1371
self.dbus_object_path, interface_name, property_name))
1372
1373
@classmethod
1374
def _get_all_interface_names(cls):
1375
"""Get a sequence of all interfaces supported by an object"""
1376
return (name for name in set(getattr(getattr(x, attr),
1377
"_dbus_interface", None)
1378
for x in (inspect.getmro(cls))
1379
for attr in dir(x))
1380
if name is not None)
1381
1382
@dbus.service.method(dbus.PROPERTIES_IFACE,
1383
in_signature="ss",
722
raise DBusPropertyNotFound(self.dbus_object_path + ":"
723
+ interface_name + "."
724
+ property_name)
725
726
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1384
727
out_signature="v")
1385
728
def Get(self, interface_name, property_name):
1386
729
"""Standard D-Bus property Get() method, see D-Bus standard.
1392
735
if not hasattr(value, "variant_level"):
1393
736
return value
1394
737
return type(value)(value, variant_level=value.variant_level+1)
1395
738
1396
739
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
1397
740
def Set(self, interface_name, property_name, value):
1398
741
"""Standard D-Bus property Set() method, see D-Bus standard.
1404
747
# The byte_arrays option is not supported yet on
1405
748
# signatures other than "ay".
1406
749
if prop._dbus_signature != "ay":
1407
raise ValueError("Byte arrays not supported for non-"
1408
"'ay' signature {!r}"
1409
.format(prop._dbus_signature))
1410
value = dbus.ByteArray(b''.join(chr(byte)
1411
for byte in value))
750
raise ValueError
751
value = dbus.ByteArray(''.join(unichr(byte)
752
for byte in value))
1412
753
prop(value)
1413
1414
@dbus.service.method(dbus.PROPERTIES_IFACE,
1415
in_signature="s",
754
755
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1416
756
out_signature="a{sv}")
1417
757
def GetAll(self, interface_name):
1418
758
"""Standard D-Bus property GetAll() method, see D-Bus
1419
759
standard.
1420
760
1421
761
Note: Will not include properties with access="write".
1422
762
"""
1423
properties = {}
1424
for name, prop in self._get_all_dbus_things("property"):
763
all = {}
764
for name, prop in self._get_all_dbus_properties():
1425
765
if (interface_name
1426
766
and interface_name != prop._dbus_interface):
1427
767
# Interface non-empty but did not match
1431
771
continue
1432
772
value = prop()
1433
773
if not hasattr(value, "variant_level"):
1434
properties[name] = value
774
all[name] = value
1435
775
continue
1436
properties[name] = type(value)(
1437
value, variant_level=value.variant_level + 1)
1438
return dbus.Dictionary(properties, signature="sv")
1439
1440
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1441
def PropertiesChanged(self, interface_name, changed_properties,
1442
invalidated_properties):
1443
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1444
standard.
1445
"""
1446
pass
1447
776
all[name] = type(value)(value, variant_level=
777
value.variant_level+1)
778
return dbus.Dictionary(all, signature="sv")
779
1448
780
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1449
781
out_signature="s",
1450
782
path_keyword='object_path',
1451
783
connection_keyword='connection')
1452
784
def Introspect(self, object_path, connection):
1453
"""Overloading of standard D-Bus method.
1454
1455
Inserts property tags and interface annotation tags.
785
"""Standard D-Bus method, overloaded to insert property tags.
1456
786
"""
1457
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1458
object_path,
1459
connection)
787
xmlstring = dbus.service.Object.Introspect(self, object_path,
788
connection)
1460
789
try:
1461
790
document = xml.dom.minidom.parseString(xmlstring)
1462
1463
791
def make_tag(document, name, prop):
1464
792
e = document.createElement("property")
1465
793
e.setAttribute("name", name)
1466
794
e.setAttribute("type", prop._dbus_signature)
1467
795
e.setAttribute("access", prop._dbus_access)
1468
796
return e
1469
1470
797
for if_tag in document.getElementsByTagName("interface"):
1471
# Add property tags
1472
798
for tag in (make_tag(document, name, prop)
1473
799
for name, prop
1474
in self._get_all_dbus_things("property")
800
in self._get_all_dbus_properties()
1475
801
if prop._dbus_interface
1476
802
== if_tag.getAttribute("name")):
1477
803
if_tag.appendChild(tag)
1478
# Add annotation tags for properties
1479
for tag in if_tag.getElementsByTagName("property"):
1480
annots = dict()
1481
for name, prop in self._get_all_dbus_things(
1482
"property"):
1483
if (name == tag.getAttribute("name")
1484
and prop._dbus_interface
1485
== if_tag.getAttribute("name")):
1486
annots.update(getattr(
1487
prop, "_dbus_annotations", {}))
1488
for name, value in annots.items():
1489
ann_tag = document.createElement(
1490
"annotation")
1491
ann_tag.setAttribute("name", name)
1492
ann_tag.setAttribute("value", value)
1493
tag.appendChild(ann_tag)
1494
804
# Add the names to the return values for the
1495
805
# "org.freedesktop.DBus.Properties" methods
1496
806
if (if_tag.getAttribute("name")
1511
821
except (AttributeError, xml.dom.DOMException,
1512
822
xml.parsers.expat.ExpatError) as error:
1513
823
logger.error("Failed to override Introspection method",
1514
exc_info=error)
1515
return xmlstring
1516
1517
1518
try:
1519
dbus.OBJECT_MANAGER_IFACE
1520
except AttributeError:
1521
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1522
1523
1524
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1525
"""A D-Bus object with an ObjectManager.
1526
1527
Classes inheriting from this exposes the standard
1528
GetManagedObjects call and the InterfacesAdded and
1529
InterfacesRemoved signals on the standard
1530
"org.freedesktop.DBus.ObjectManager" interface.
1531
1532
Note: No signals are sent automatically; they must be sent
1533
manually.
1534
"""
1535
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1536
out_signature="a{oa{sa{sv}}}")
1537
def GetManagedObjects(self):
1538
"""This function must be overridden"""
1539
raise NotImplementedError()
1540
1541
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1542
signature="oa{sa{sv}}")
1543
def InterfacesAdded(self, object_path, interfaces_and_properties):
1544
pass
1545
1546
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1547
def InterfacesRemoved(self, object_path, interfaces):
1548
pass
1549
1550
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1551
out_signature="s",
1552
path_keyword='object_path',
1553
connection_keyword='connection')
1554
def Introspect(self, object_path, connection):
1555
"""Overloading of standard D-Bus method.
1556
1557
Override return argument name of GetManagedObjects to be
1558
"objpath_interfaces_and_properties"
1559
"""
1560
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1561
object_path,
1562
connection)
1563
try:
1564
document = xml.dom.minidom.parseString(xmlstring)
1565
1566
for if_tag in document.getElementsByTagName("interface"):
1567
# Fix argument name for the GetManagedObjects method
1568
if (if_tag.getAttribute("name")
1569
== dbus.OBJECT_MANAGER_IFACE):
1570
for cn in if_tag.getElementsByTagName("method"):
1571
if (cn.getAttribute("name")
1572
== "GetManagedObjects"):
1573
for arg in cn.getElementsByTagName("arg"):
1574
if (arg.getAttribute("direction")
1575
== "out"):
1576
arg.setAttribute(
1577
"name",
1578
"objpath_interfaces"
1579
"_and_properties")
1580
xmlstring = document.toxml("utf-8")
1581
document.unlink()
1582
except (AttributeError, xml.dom.DOMException,
1583
xml.parsers.expat.ExpatError) as error:
1584
logger.error("Failed to override Introspection method",
1585
exc_info=error)
1586
return xmlstring
1587
1588
1589
def datetime_to_dbus(dt, variant_level=0):
824
error)
825
return xmlstring
826
827
828
def datetime_to_dbus (dt, variant_level=0):
1590
829
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1591
830
if dt is None:
1592
return dbus.String("", variant_level=variant_level)
1593
return dbus.String(dt.isoformat(), variant_level=variant_level)
1594
1595
1596
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1597
"""A class decorator; applied to a subclass of
1598
dbus.service.Object, it will add alternate D-Bus attributes with
1599
interface names according to the "alt_interface_names" mapping.
1600
Usage:
1601
1602
@alternate_dbus_interfaces({"org.example.Interface":
1603
"net.example.AlternateInterface"})
1604
class SampleDBusObject(dbus.service.Object):
1605
@dbus.service.method("org.example.Interface")
1606
def SampleDBusMethod():
1607
pass
1608
1609
The above "SampleDBusMethod" on "SampleDBusObject" will be
1610
reachable via two interfaces: "org.example.Interface" and
1611
"net.example.AlternateInterface", the latter of which will have
1612
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1613
"true", unless "deprecate" is passed with a False value.
1614
1615
This works for methods and signals, and also for D-Bus properties
1616
(from DBusObjectWithProperties) and interfaces (from the
1617
dbus_interface_annotations decorator).
831
return dbus.String("", variant_level = variant_level)
832
return dbus.String(dt.isoformat(),
833
variant_level=variant_level)
834
835
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
836
.__metaclass__):
837
"""Applied to an empty subclass of a D-Bus object, this metaclass
838
will add additional D-Bus attributes matching a certain pattern.
1618
839
"""
1619
1620
def wrapper(cls):
1621
for orig_interface_name, alt_interface_name in (
1622
alt_interface_names.items()):
1623
attr = {}
1624
interface_names = set()
1625
# Go though all attributes of the class
1626
for attrname, attribute in inspect.getmembers(cls):
840
def __new__(mcs, name, bases, attr):
841
# Go through all the base classes which could have D-Bus
842
# methods, signals, or properties in them
843
for base in (b for b in bases
844
if issubclass(b, dbus.service.Object)):
845
# Go though all attributes of the base class
846
for attrname, attribute in inspect.getmembers(base):
1627
847
# Ignore non-D-Bus attributes, and D-Bus attributes
1628
848
# with the wrong interface name
1629
849
if (not hasattr(attribute, "_dbus_interface")
1630
or not attribute._dbus_interface.startswith(
1631
orig_interface_name)):
850
or not attribute._dbus_interface
851
.startswith("se.recompile.Mandos")):
1632
852
continue
1633
853
# Create an alternate D-Bus interface name based on
1634
854
# the current name
1635
alt_interface = attribute._dbus_interface.replace(
1636
orig_interface_name, alt_interface_name)
1637
interface_names.add(alt_interface)
855
alt_interface = (attribute._dbus_interface
856
.replace("se.recompile.Mandos",
857
"se.bsnet.fukt.Mandos"))
1638
858
# Is this a D-Bus signal?
1639
859
if getattr(attribute, "_dbus_is_signal", False):
1640
# Extract the original non-method undecorated
1641
# function by black magic
1642
if sys.version_info.major == 2:
1643
nonmethod_func = (dict(
860
# Extract the original non-method function by
861
# black magic
862
nonmethod_func = (dict(
1644
863
zip(attribute.func_code.co_freevars,
1645
attribute.__closure__))
1646
["func"].cell_contents)
1647
else:
1648
nonmethod_func = (dict(
1649
zip(attribute.__code__.co_freevars,
1650
attribute.__closure__))
1651
["func"].cell_contents)
864
attribute.__closure__))["func"]
865
.cell_contents)
1652
866
# Create a new, but exactly alike, function
1653
867
# object, and decorate it to be a new D-Bus signal
1654
868
# with the alternate D-Bus interface name
1655
new_function = copy_function(nonmethod_func)
1656
new_function = (dbus.service.signal(
1657
alt_interface,
1658
attribute._dbus_signature)(new_function))
1659
# Copy annotations, if any
1660
try:
1661
new_function._dbus_annotations = dict(
1662
attribute._dbus_annotations)
1663
except AttributeError:
1664
pass
1665
869
new_function = (dbus.service.signal
870
(alt_interface,
871
attribute._dbus_signature)
872
(types.FunctionType(
873
nonmethod_func.func_code,
874
nonmethod_func.func_globals,
875
nonmethod_func.func_name,
876
nonmethod_func.func_defaults,
877
nonmethod_func.func_closure)))
1666
878
# Define a creator of a function to call both the
1667
# original and alternate functions, so both the
1668
# original and alternate signals gets sent when
1669
# the function is called
879
# old and new functions, so both the old and new
880
# signals gets sent when the function is called
1670
881
def fixscope(func1, func2):
1671
882
"""This function is a scope container to pass
1672
883
func1 and func2 to the "call_both" function
1673
884
outside of its arguments"""
1674
1675
@functools.wraps(func2)
1676
885
def call_both(*args, **kwargs):
1677
886
"""This function will emit two D-Bus
1678
887
signals by calling func1 and func2"""
1679
888
func1(*args, **kwargs)
1680
889
func2(*args, **kwargs)
1681
# Make wrapper function look like a D-Bus
1682
# signal
1683
for name, attr in inspect.getmembers(func2):
1684
if name.startswith("_dbus_"):
1685
setattr(call_both, name, attr)
1686
1687
890
return call_both
1688
891
# Create the "call_both" function and add it to
1689
892
# the class
1690
attr[attrname] = fixscope(attribute, new_function)
893
attr[attrname] = fixscope(attribute,
894
new_function)
1691
895
# Is this a D-Bus method?
1692
896
elif getattr(attribute, "_dbus_is_method", False):
1693
897
# Create a new, but exactly alike, function
1694
898
# object. Decorate it to be a new D-Bus method
1695
899
# with the alternate D-Bus interface name. Add it
1696
900
# to the class.
1697
attr[attrname] = (
1698
dbus.service.method(
1699
alt_interface,
1700
attribute._dbus_in_signature,
1701
attribute._dbus_out_signature)
1702
(copy_function(attribute)))
1703
# Copy annotations, if any
1704
try:
1705
attr[attrname]._dbus_annotations = dict(
1706
attribute._dbus_annotations)
1707
except AttributeError:
1708
pass
901
attr[attrname] = (dbus.service.method
902
(alt_interface,
903
attribute._dbus_in_signature,
904
attribute._dbus_out_signature)
905
(types.FunctionType
906
(attribute.func_code,
907
attribute.func_globals,
908
attribute.func_name,
909
attribute.func_defaults,
910
attribute.func_closure)))
1709
911
# Is this a D-Bus property?
1710
912
elif getattr(attribute, "_dbus_is_property", False):
1711
913
# Create a new, but exactly alike, function
1712
914
# object, and decorate it to be a new D-Bus
1713
915
# property with the alternate D-Bus interface
1714
916
# name. Add it to the class.
1715
attr[attrname] = (dbus_service_property(
1716
alt_interface, attribute._dbus_signature,
1717
attribute._dbus_access,
1718
attribute._dbus_get_args_options
1719
["byte_arrays"])
1720
(copy_function(attribute)))
1721
# Copy annotations, if any
1722
try:
1723
attr[attrname]._dbus_annotations = dict(
1724
attribute._dbus_annotations)
1725
except AttributeError:
1726
pass
1727
# Is this a D-Bus interface?
1728
elif getattr(attribute, "_dbus_is_interface", False):
1729
# Create a new, but exactly alike, function
1730
# object. Decorate it to be a new D-Bus interface
1731
# with the alternate D-Bus interface name. Add it
1732
# to the class.
1733
attr[attrname] = (
1734
dbus_interface_annotations(alt_interface)
1735
(copy_function(attribute)))
1736
if deprecate:
1737
# Deprecate all alternate interfaces
1738
iname = "_AlternateDBusNames_interface_annotation{}"
1739
for interface_name in interface_names:
1740
1741
@dbus_interface_annotations(interface_name)
1742
def func(self):
1743
return {"org.freedesktop.DBus.Deprecated":
1744
"true"}
1745
# Find an unused name
1746
for aname in (iname.format(i)
1747
for i in itertools.count()):
1748
if aname not in attr:
1749
attr[aname] = func
1750
break
1751
if interface_names:
1752
# Replace the class with a new subclass of it with
1753
# methods, signals, etc. as created above.
1754
if sys.version_info.major == 2:
1755
cls = type(b"{}Alternate".format(cls.__name__),
1756
(cls, ), attr)
1757
else:
1758
cls = type("{}Alternate".format(cls.__name__),
1759
(cls, ), attr)
1760
return cls
1761
1762
return wrapper
1763
1764
1765
@alternate_dbus_interfaces({"se.recompile.Mandos":
1766
"se.bsnet.fukt.Mandos"})
917
attr[attrname] = (dbus_service_property
918
(alt_interface,
919
attribute._dbus_signature,
920
attribute._dbus_access,
921
attribute
922
._dbus_get_args_options
923
["byte_arrays"])
924
(types.FunctionType
925
(attribute.func_code,
926
attribute.func_globals,
927
attribute.func_name,
928
attribute.func_defaults,
929
attribute.func_closure)))
930
return type.__new__(mcs, name, bases, attr)
931
1767
932
class ClientDBus(Client, DBusObjectWithProperties):
1768
933
"""A Client class using D-Bus
1769
934
1770
935
Attributes:
1771
936
dbus_object_path: dbus.ObjectPath
1772
937
bus: dbus.SystemBus()
1773
938
"""
1774
939
1775
940
runtime_expansions = (Client.runtime_expansions
1776
+ ("dbus_object_path", ))
1777
1778
_interface = "se.recompile.Mandos.Client"
1779
941
+ ("dbus_object_path",))
942
1780
943
# dbus.service.Object doesn't use super(), so we can't either.
1781
1782
def __init__(self, bus=None, *args, **kwargs):
944
945
def __init__(self, bus = None, *args, **kwargs):
1783
946
self.bus = bus
1784
947
Client.__init__(self, *args, **kwargs)
948
949
self._approvals_pending = 0
1785
950
# Only now, when this client is initialized, can it show up on
1786
951
# the D-Bus
1787
client_object_name = str(self.name).translate(
952
client_object_name = unicode(self.name).translate(
1788
953
{ord("."): ord("_"),
1789
954
ord("-"): ord("_")})
1790
self.dbus_object_path = dbus.ObjectPath(
1791
"/clients/" + client_object_name)
955
self.dbus_object_path = (dbus.ObjectPath
956
("/clients/" + client_object_name))
1792
957
DBusObjectWithProperties.__init__(self, self.bus,
1793
958
self.dbus_object_path)
1794
1795
def notifychangeproperty(transform_func, dbus_name,
1796
type_func=lambda x: x,
1797
variant_level=1,
1798
invalidate_only=False,
1799
_interface=_interface):
959
960
def notifychangeproperty(transform_func,
961
dbus_name, type_func=lambda x: x,
962
variant_level=1):
1800
963
""" Modify a variable so that it's a property which announces
1801
964
its changes to DBus.
1802
965
1807
970
to the D-Bus. Default: no transform
1808
971
variant_level: D-Bus variant level. Default: 1
1809
972
"""
1810
attrname = "_{}".format(dbus_name)
1811
973
attrname = "_{0}".format(dbus_name)
1812
974
def setter(self, value):
1813
975
if hasattr(self, "dbus_object_path"):
1814
976
if (not hasattr(self, attrname) or
1815
977
type_func(getattr(self, attrname, None))
1816
978
!= type_func(value)):
1817
if invalidate_only:
1818
self.PropertiesChanged(
1819
_interface, dbus.Dictionary(),
1820
dbus.Array((dbus_name, )))
1821
else:
1822
dbus_value = transform_func(
1823
type_func(value),
1824
variant_level=variant_level)
1825
self.PropertyChanged(dbus.String(dbus_name),
1826
dbus_value)
1827
self.PropertiesChanged(
1828
_interface,
1829
dbus.Dictionary({dbus.String(dbus_name):
1830
dbus_value}),
1831
dbus.Array())
979
dbus_value = transform_func(type_func(value),
980
variant_level
981
=variant_level)
982
self.PropertyChanged(dbus.String(dbus_name),
983
dbus_value)
1832
984
setattr(self, attrname, value)
1833
985
1834
986
return property(lambda self: getattr(self, attrname), setter)
1835
987
988
1836
989
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1837
990
approvals_pending = notifychangeproperty(dbus.Boolean,
1838
991
"ApprovalPending",
1839
type_func=bool)
992
type_func = bool)
1840
993
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1841
994
last_enabled = notifychangeproperty(datetime_to_dbus,
1842
995
"LastEnabled")
1843
checker = notifychangeproperty(
1844
dbus.Boolean, "CheckerRunning",
1845
type_func=lambda checker: checker is not None)
996
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
997
type_func = lambda checker:
998
checker is not None)
1846
999
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1847
1000
"LastCheckedOK")
1848
last_checker_status = notifychangeproperty(dbus.Int16,
1849
"LastCheckerStatus")
1850
1001
last_approval_request = notifychangeproperty(
1851
1002
datetime_to_dbus, "LastApprovalRequest")
1852
1003
approved_by_default = notifychangeproperty(dbus.Boolean,
1853
1004
"ApprovedByDefault")
1854
approval_delay = notifychangeproperty(
1855
dbus.UInt64, "ApprovalDelay",
1856
type_func=lambda td: td.total_seconds() * 1000)
1005
approval_delay = notifychangeproperty(dbus.UInt16,
1006
"ApprovalDelay",
1007
type_func =
1008
_timedelta_to_milliseconds)
1857
1009
approval_duration = notifychangeproperty(
1858
dbus.UInt64, "ApprovalDuration",
1859
type_func=lambda td: td.total_seconds() * 1000)
1010
dbus.UInt16, "ApprovalDuration",
1011
type_func = _timedelta_to_milliseconds)
1860
1012
host = notifychangeproperty(dbus.String, "Host")
1861
timeout = notifychangeproperty(
1862
dbus.UInt64, "Timeout",
1863
type_func=lambda td: td.total_seconds() * 1000)
1013
timeout = notifychangeproperty(dbus.UInt16, "Timeout",
1014
type_func =
1015
_timedelta_to_milliseconds)
1864
1016
extended_timeout = notifychangeproperty(
1865
dbus.UInt64, "ExtendedTimeout",
1866
type_func=lambda td: td.total_seconds() * 1000)
1867
interval = notifychangeproperty(
1868
dbus.UInt64, "Interval",
1869
type_func=lambda td: td.total_seconds() * 1000)
1017
dbus.UInt16, "ExtendedTimeout",
1018
type_func = _timedelta_to_milliseconds)
1019
interval = notifychangeproperty(dbus.UInt16,
1020
"Interval",
1021
type_func =
1022
_timedelta_to_milliseconds)
1870
1023
checker_command = notifychangeproperty(dbus.String, "Checker")
1871
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1872
invalidate_only=True)
1873
1024
1874
1025
del notifychangeproperty
1875
1026
1876
1027
def __del__(self, *args, **kwargs):
1877
1028
try:
1878
1029
self.remove_from_connection()
1881
1032
if hasattr(DBusObjectWithProperties, "__del__"):
1882
1033
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1883
1034
Client.__del__(self, *args, **kwargs)
1884
1885
def checker_callback(self, source, condition,
1886
connection, command, *args, **kwargs):
1887
ret = Client.checker_callback(self, source, condition,
1888
connection, command, *args,
1889
**kwargs)
1890
exitstatus = self.last_checker_status
1891
if exitstatus >= 0:
1035
1036
def checker_callback(self, pid, condition, command,
1037
*args, **kwargs):
1038
self.checker_callback_tag = None
1039
self.checker = None
1040
if os.WIFEXITED(condition):
1041
exitstatus = os.WEXITSTATUS(condition)
1892
1042
# Emit D-Bus signal
1893
1043
self.CheckerCompleted(dbus.Int16(exitstatus),
1894
# This is specific to GNU libC
1895
dbus.Int64(exitstatus << 8),
1044
dbus.Int64(condition),
1896
1045
dbus.String(command))
1897
1046
else:
1898
1047
# Emit D-Bus signal
1899
1048
self.CheckerCompleted(dbus.Int16(-1),
1900
dbus.Int64(
1901
# This is specific to GNU libC
1902
(exitstatus << 8)
1903
| self.last_checker_signal),
1049
dbus.Int64(condition),
1904
1050
dbus.String(command))
1905
return ret
1906
1051
1052
return Client.checker_callback(self, pid, condition, command,
1053
*args, **kwargs)
1054
1907
1055
def start_checker(self, *args, **kwargs):
1908
old_checker_pid = getattr(self.checker, "pid", None)
1056
old_checker = self.checker
1057
if self.checker is not None:
1058
old_checker_pid = self.checker.pid
1059
else:
1060
old_checker_pid = None
1909
1061
r = Client.start_checker(self, *args, **kwargs)
1910
1062
# Only if new checker process was started
1911
1063
if (self.checker is not None
1913
1065
# Emit D-Bus signal
1914
1066
self.CheckerStarted(self.current_checker_command)
1915
1067
return r
1916
1068
1917
1069
def _reset_approved(self):
1918
self.approved = None
1070
self._approved = None
1919
1071
return False
1920
1072
1921
1073
def approve(self, value=True):
1922
self.approved = value
1923
GLib.timeout_add(int(self.approval_duration.total_seconds()
1924
* 1000), self._reset_approved)
1925
1074
self.send_changedstate()
1926
1927
# D-Bus methods, signals & properties
1928
1929
# Interfaces
1930
1931
# Signals
1932
1075
self._approved = value
1076
gobject.timeout_add(_timedelta_to_milliseconds
1077
(self.approval_duration),
1078
self._reset_approved)
1079
1080
1081
## D-Bus methods, signals & properties
1082
_interface = "se.recompile.Mandos.Client"
1083
1084
## Signals
1085
1933
1086
# CheckerCompleted - signal
1934
1087
@dbus.service.signal(_interface, signature="nxs")
1935
1088
def CheckerCompleted(self, exitcode, waitstatus, command):
1936
1089
"D-Bus signal"
1937
1090
pass
1938
1091
1939
1092
# CheckerStarted - signal
1940
1093
@dbus.service.signal(_interface, signature="s")
1941
1094
def CheckerStarted(self, command):
1942
1095
"D-Bus signal"
1943
1096
pass
1944
1097
1945
1098
# PropertyChanged - signal
1946
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1947
1099
@dbus.service.signal(_interface, signature="sv")
1948
1100
def PropertyChanged(self, property, value):
1949
1101
"D-Bus signal"
1950
1102
pass
1951
1103
1952
1104
# GotSecret - signal
1953
1105
@dbus.service.signal(_interface)
1954
1106
def GotSecret(self):
1957
1109
server to mandos-client
1958
1110
"""
1959
1111
pass
1960
1112
1961
1113
# Rejected - signal
1962
1114
@dbus.service.signal(_interface, signature="s")
1963
1115
def Rejected(self, reason):
1964
1116
"D-Bus signal"
1965
1117
pass
1966
1118
1967
1119
# NeedApproval - signal
1968
1120
@dbus.service.signal(_interface, signature="tb")
1969
1121
def NeedApproval(self, timeout, default):
1970
1122
"D-Bus signal"
1971
1123
return self.need_approval()
1972
1973
# Methods
1974
1124
1125
## Methods
1126
1975
1127
# Approve - method
1976
1128
@dbus.service.method(_interface, in_signature="b")
1977
1129
def Approve(self, value):
1978
1130
self.approve(value)
1979
1131
1980
1132
# CheckedOK - method
1981
1133
@dbus.service.method(_interface)
1982
1134
def CheckedOK(self):
1983
1135
self.checked_ok()
1984
1136
1985
1137
# Enable - method
1986
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1987
1138
@dbus.service.method(_interface)
1988
1139
def Enable(self):
1989
1140
"D-Bus method"
1990
1141
self.enable()
1991
1142
1992
1143
# StartChecker - method
1993
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1994
1144
@dbus.service.method(_interface)
1995
1145
def StartChecker(self):
1996
1146
"D-Bus method"
1997
1147
self.start_checker()
1998
1148
1999
1149
# Disable - method
2000
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2001
1150
@dbus.service.method(_interface)
2002
1151
def Disable(self):
2003
1152
"D-Bus method"
2004
1153
self.disable()
2005
1154
2006
1155
# StopChecker - method
2007
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2008
1156
@dbus.service.method(_interface)
2009
1157
def StopChecker(self):
2010
1158
self.stop_checker()
2011
2012
# Properties
2013
1159
1160
## Properties
1161
2014
1162
# ApprovalPending - property
2015
1163
@dbus_service_property(_interface, signature="b", access="read")
2016
1164
def ApprovalPending_dbus_property(self):
2017
1165
return dbus.Boolean(bool(self.approvals_pending))
2018
1166
2019
1167
# ApprovedByDefault - property
2020
@dbus_service_property(_interface,
2021
signature="b",
1168
@dbus_service_property(_interface, signature="b",
2022
1169
access="readwrite")
2023
1170
def ApprovedByDefault_dbus_property(self, value=None):
2024
1171
if value is None: # get
2025
1172
return dbus.Boolean(self.approved_by_default)
2026
1173
self.approved_by_default = bool(value)
2027
1174
2028
1175
# ApprovalDelay - property
2029
@dbus_service_property(_interface,
2030
signature="t",
1176
@dbus_service_property(_interface, signature="t",
2031
1177
access="readwrite")
2032
1178
def ApprovalDelay_dbus_property(self, value=None):
2033
1179
if value is None: # get
2034
return dbus.UInt64(self.approval_delay.total_seconds()
2035
* 1000)
1180
return dbus.UInt64(self.approval_delay_milliseconds())
2036
1181
self.approval_delay = datetime.timedelta(0, 0, 0, value)
2037
1182
2038
1183
# ApprovalDuration - property
2039
@dbus_service_property(_interface,
2040
signature="t",
1184
@dbus_service_property(_interface, signature="t",
2041
1185
access="readwrite")
2042
1186
def ApprovalDuration_dbus_property(self, value=None):
2043
1187
if value is None: # get
2044
return dbus.UInt64(self.approval_duration.total_seconds()
2045
* 1000)
1188
return dbus.UInt64(_timedelta_to_milliseconds(
1189
self.approval_duration))
2046
1190
self.approval_duration = datetime.timedelta(0, 0, 0, value)
2047
1191
2048
1192
# Name - property
2049
@dbus_annotations(
2050
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2051
1193
@dbus_service_property(_interface, signature="s", access="read")
2052
1194
def Name_dbus_property(self):
2053
1195
return dbus.String(self.name)
2054
2055
# KeyID - property
2056
@dbus_annotations(
2057
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2058
@dbus_service_property(_interface, signature="s", access="read")
2059
def KeyID_dbus_property(self):
2060
return dbus.String(self.key_id)
2061
1196
2062
1197
# Fingerprint - property
2063
@dbus_annotations(
2064
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2065
1198
@dbus_service_property(_interface, signature="s", access="read")
2066
1199
def Fingerprint_dbus_property(self):
2067
1200
return dbus.String(self.fingerprint)
2068
1201
2069
1202
# Host - property
2070
@dbus_service_property(_interface,
2071
signature="s",
1203
@dbus_service_property(_interface, signature="s",
2072
1204
access="readwrite")
2073
1205
def Host_dbus_property(self, value=None):
2074
1206
if value is None: # get
2075
1207
return dbus.String(self.host)
2076
self.host = str(value)
2077
1208
self.host = value
1209
2078
1210
# Created - property
2079
@dbus_annotations(
2080
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2081
1211
@dbus_service_property(_interface, signature="s", access="read")
2082
1212
def Created_dbus_property(self):
2083
return datetime_to_dbus(self.created)
2084
1213
return dbus.String(datetime_to_dbus(self.created))
1214
2085
1215
# LastEnabled - property
2086
1216
@dbus_service_property(_interface, signature="s", access="read")
2087
1217
def LastEnabled_dbus_property(self):
2088
1218
return datetime_to_dbus(self.last_enabled)
2089
1219
2090
1220
# Enabled - property
2091
@dbus_service_property(_interface,
2092
signature="b",
1221
@dbus_service_property(_interface, signature="b",
2093
1222
access="readwrite")
2094
1223
def Enabled_dbus_property(self, value=None):
2095
1224
if value is None: # get
2098
1227
self.enable()
2099
1228
else:
2100
1229
self.disable()
2101
1230
2102
1231
# LastCheckedOK - property
2103
@dbus_service_property(_interface,
2104
signature="s",
1232
@dbus_service_property(_interface, signature="s",
2105
1233
access="readwrite")
2106
1234
def LastCheckedOK_dbus_property(self, value=None):
2107
1235
if value is not None:
2108
1236
self.checked_ok()
2109
1237
return
2110
1238
return datetime_to_dbus(self.last_checked_ok)
2111
2112
# LastCheckerStatus - property
2113
@dbus_service_property(_interface, signature="n", access="read")
2114
def LastCheckerStatus_dbus_property(self):
2115
return dbus.Int16(self.last_checker_status)
2116
1239
2117
1240
# Expires - property
2118
1241
@dbus_service_property(_interface, signature="s", access="read")
2119
1242
def Expires_dbus_property(self):
2120
1243
return datetime_to_dbus(self.expires)
2121
1244
2122
1245
# LastApprovalRequest - property
2123
1246
@dbus_service_property(_interface, signature="s", access="read")
2124
1247
def LastApprovalRequest_dbus_property(self):
2125
1248
return datetime_to_dbus(self.last_approval_request)
2126
1249
2127
1250
# Timeout - property
2128
@dbus_service_property(_interface,
2129
signature="t",
1251
@dbus_service_property(_interface, signature="t",
2130
1252
access="readwrite")
2131
1253
def Timeout_dbus_property(self, value=None):
2132
1254
if value is None: # get
2133
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2134
old_timeout = self.timeout
1255
return dbus.UInt64(self.timeout_milliseconds())
2135
1256
self.timeout = datetime.timedelta(0, 0, 0, value)
2136
# Reschedule disabling
2137
if self.enabled:
2138
now = datetime.datetime.utcnow()
2139
self.expires += self.timeout - old_timeout
2140
if self.expires <= now:
2141
# The timeout has passed
2142
self.disable()
2143
else:
2144
if (getattr(self, "disable_initiator_tag", None)
2145
is None):
2146
return
2147
GLib.source_remove(self.disable_initiator_tag)
2148
self.disable_initiator_tag = GLib.timeout_add(
2149
int((self.expires - now).total_seconds() * 1000),
2150
self.disable)
2151
1257
if getattr(self, "disable_initiator_tag", None) is None:
1258
return
1259
# Reschedule timeout
1260
gobject.source_remove(self.disable_initiator_tag)
1261
self.disable_initiator_tag = None
1262
self.expires = None
1263
time_to_die = _timedelta_to_milliseconds((self
1264
.last_checked_ok
1265
+ self.timeout)
1266
- datetime.datetime
1267
.utcnow())
1268
if time_to_die <= 0:
1269
# The timeout has passed
1270
self.disable()
1271
else:
1272
self.expires = (datetime.datetime.utcnow()
1273
+ datetime.timedelta(milliseconds =
1274
time_to_die))
1275
self.disable_initiator_tag = (gobject.timeout_add
1276
(time_to_die, self.disable))
1277
2152
1278
# ExtendedTimeout - property
2153
@dbus_service_property(_interface,
2154
signature="t",
1279
@dbus_service_property(_interface, signature="t",
2155
1280
access="readwrite")
2156
1281
def ExtendedTimeout_dbus_property(self, value=None):
2157
1282
if value is None: # get
2158
return dbus.UInt64(self.extended_timeout.total_seconds()
2159
* 1000)
1283
return dbus.UInt64(self.extended_timeout_milliseconds())
2160
1284
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2161
1285
2162
1286
# Interval - property
2163
@dbus_service_property(_interface,
2164
signature="t",
1287
@dbus_service_property(_interface, signature="t",
2165
1288
access="readwrite")
2166
1289
def Interval_dbus_property(self, value=None):
2167
1290
if value is None: # get
2168
return dbus.UInt64(self.interval.total_seconds() * 1000)
1291
return dbus.UInt64(self.interval_milliseconds())
2169
1292
self.interval = datetime.timedelta(0, 0, 0, value)
2170
1293
if getattr(self, "checker_initiator_tag", None) is None:
2171
1294
return
2172
if self.enabled:
2173
# Reschedule checker run
2174
GLib.source_remove(self.checker_initiator_tag)
2175
self.checker_initiator_tag = GLib.timeout_add(
2176
value, self.start_checker)
2177
self.start_checker() # Start one now, too
2178
1295
# Reschedule checker run
1296
gobject.source_remove(self.checker_initiator_tag)
1297
self.checker_initiator_tag = (gobject.timeout_add
1298
(value, self.start_checker))
1299
self.start_checker() # Start one now, too
1300
2179
1301
# Checker - property
2180
@dbus_service_property(_interface,
2181
signature="s",
1302
@dbus_service_property(_interface, signature="s",
2182
1303
access="readwrite")
2183
1304
def Checker_dbus_property(self, value=None):
2184
1305
if value is None: # get
2185
1306
return dbus.String(self.checker_command)
2186
self.checker_command = str(value)
2187
1307
self.checker_command = value
1308
2188
1309
# CheckerRunning - property
2189
@dbus_service_property(_interface,
2190
signature="b",
1310
@dbus_service_property(_interface, signature="b",
2191
1311
access="readwrite")
2192
1312
def CheckerRunning_dbus_property(self, value=None):
2193
1313
if value is None: # get
2196
1316
self.start_checker()
2197
1317
else:
2198
1318
self.stop_checker()
2199
1319
2200
1320
# ObjectPath - property
2201
@dbus_annotations(
2202
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2203
"org.freedesktop.DBus.Deprecated": "true"})
2204
1321
@dbus_service_property(_interface, signature="o", access="read")
2205
1322
def ObjectPath_dbus_property(self):
2206
return self.dbus_object_path # is already a dbus.ObjectPath
2207
1323
return self.dbus_object_path # is already a dbus.ObjectPath
1324
2208
1325
# Secret = property
2209
@dbus_annotations(
2210
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2211
"invalidates"})
2212
@dbus_service_property(_interface,
2213
signature="ay",
2214
access="write",
2215
byte_arrays=True)
1326
@dbus_service_property(_interface, signature="ay",
1327
access="write", byte_arrays=True)
2216
1328
def Secret_dbus_property(self, value):
2217
self.secret = bytes(value)
2218
1329
self.secret = str(value)
1330
2219
1331
del _interface
2220
1332
2221
1333
2222
1334
class ProxyClient(object):
2223
def __init__(self, child_pipe, key_id, fpr, address):
1335
def __init__(self, child_pipe, fpr, address):
2224
1336
self._pipe = child_pipe
2225
self._pipe.send(('init', key_id, fpr, address))
1337
self._pipe.send(('init', fpr, address))
2226
1338
if not self._pipe.recv():
2227
raise KeyError(key_id or fpr)
2228
1339
raise KeyError()
1340
2229
1341
def __getattribute__(self, name):
2230
if name == '_pipe':
1342
if(name == '_pipe'):
2231
1343
return super(ProxyClient, self).__getattribute__(name)
2232
1344
self._pipe.send(('getattr', name))
2233
1345
data = self._pipe.recv()
2234
1346
if data[0] == 'data':
2235
1347
return data[1]
2236
1348
if data[0] == 'function':
2237
2238
1349
def func(*args, **kwargs):
2239
1350
self._pipe.send(('funcall', name, args, kwargs))
2240
1351
return self._pipe.recv()[1]
2241
2242
1352
return func
2243
1353
2244
1354
def __setattr__(self, name, value):
2245
if name == '_pipe':
1355
if(name == '_pipe'):
2246
1356
return super(ProxyClient, self).__setattr__(name, value)
2247
1357
self._pipe.send(('setattr', name, value))
2248
1358
1359
class ClientDBusTransitional(ClientDBus):
1360
__metaclass__ = AlternateDBusNamesMetaclass
2249
1361
2250
1362
class ClientHandler(socketserver.BaseRequestHandler, object):
2251
1363
"""A class to handle client connections.
2252
1364
2253
1365
Instantiated once for each connection to handle it.
2254
1366
Note: This will run in its own forked process."""
2255
1367
2256
1368
def handle(self):
2257
1369
with contextlib.closing(self.server.child_pipe) as child_pipe:
2258
1370
logger.info("TCP connection from: %s",
2259
str(self.client_address))
1371
unicode(self.client_address))
2260
1372
logger.debug("Pipe FD: %d",
2261
1373
self.server.child_pipe.fileno())
2262
2263
session = gnutls.ClientSession(self.request)
2264
2265
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2266
# "+AES-256-CBC", "+SHA1",
2267
# "+COMP-NULL", "+CTYPE-OPENPGP",
2268
# "+DHE-DSS"))
1374
1375
session = (gnutls.connection
1376
.ClientSession(self.request,
1377
gnutls.connection
1378
.X509Credentials()))
1379
1380
# Note: gnutls.connection.X509Credentials is really a
1381
# generic GnuTLS certificate credentials object so long as
1382
# no X.509 keys are added to it. Therefore, we can use it
1383
# here despite using OpenPGP certificates.
1384
1385
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1386
# "+AES-256-CBC", "+SHA1",
1387
# "+COMP-NULL", "+CTYPE-OPENPGP",
1388
# "+DHE-DSS"))
2269
1389
# Use a fallback default, since this MUST be set.
2270
1390
priority = self.server.gnutls_priority
2271
1391
if priority is None:
2272
1392
priority = "NORMAL"
2273
gnutls.priority_set_direct(session._c_object,
2274
priority.encode("utf-8"),
2275
None)
2276
1393
(gnutls.library.functions
1394
.gnutls_priority_set_direct(session._c_object,
1395
priority, None))
1396
2277
1397
# Start communication using the Mandos protocol
2278
1398
# Get protocol number
2279
1399
line = self.request.makefile().readline()
2280
1400
logger.debug("Protocol version: %r", line)
2281
1401
try:
2282
1402
if int(line.strip().split()[0]) > 1:
2283
raise RuntimeError(line)
1403
raise RuntimeError
2284
1404
except (ValueError, IndexError, RuntimeError) as error:
2285
1405
logger.error("Unknown protocol version: %s", error)
2286
1406
return
2287
1407
2288
1408
# Start GnuTLS connection
2289
1409
try:
2290
1410
session.handshake()
2291
except gnutls.Error as error:
1411
except gnutls.errors.GNUTLSError as error:
2292
1412
logger.warning("Handshake failed: %s", error)
2293
1413
# Do not run session.bye() here: the session is not
2294
1414
# established. Just abandon the request.
2295
1415
return
2296
1416
logger.debug("Handshake succeeded")
2297
1417
2298
1418
approval_required = False
2299
1419
try:
2300
if gnutls.has_rawpk:
2301
fpr = ""
2302
try:
2303
key_id = self.key_id(
2304
self.peer_certificate(session))
2305
except (TypeError, gnutls.Error) as error:
2306
logger.warning("Bad certificate: %s", error)
2307
return
2308
logger.debug("Key ID: %s", key_id)
2309
2310
else:
2311
key_id = ""
2312
try:
2313
fpr = self.fingerprint(
2314
self.peer_certificate(session))
2315
except (TypeError, gnutls.Error) as error:
2316
logger.warning("Bad certificate: %s", error)
2317
return
2318
logger.debug("Fingerprint: %s", fpr)
2319
2320
try:
2321
client = ProxyClient(child_pipe, key_id, fpr,
1420
try:
1421
fpr = self.fingerprint(self.peer_certificate
1422
(session))
1423
except (TypeError,
1424
gnutls.errors.GNUTLSError) as error:
1425
logger.warning("Bad certificate: %s", error)
1426
return
1427
logger.debug("Fingerprint: %s", fpr)
1428
1429
try:
1430
client = ProxyClient(child_pipe, fpr,
2322
1431
self.client_address)
2323
1432
except KeyError:
2324
1433
return
2325
1434
2326
1435
if client.approval_delay:
2327
1436
delay = client.approval_delay
2328
1437
client.approvals_pending += 1
2329
1438
approval_required = True
2330
1439
2331
1440
while True:
2332
1441
if not client.enabled:
2333
1442
logger.info("Client %s is disabled",
2334
client.name)
1443
client.name)
2335
1444
if self.server.use_dbus:
2336
1445
# Emit D-Bus signal
2337
1446
client.Rejected("Disabled")
2338
1447
return
2339
2340
if client.approved or not client.approval_delay:
2341
# We are approved or approval is disabled
1448
1449
if client._approved or not client.approval_delay:
1450
#We are approved or approval is disabled
2342
1451
break
2343
elif client.approved is None:
1452
elif client._approved is None:
2344
1453
logger.info("Client %s needs approval",
2345
1454
client.name)
2346
1455
if self.server.use_dbus:
2347
1456
# Emit D-Bus signal
2348
1457
client.NeedApproval(
2349
client.approval_delay.total_seconds()
2350
* 1000, client.approved_by_default)
1458
client.approval_delay_milliseconds(),
1459
client.approved_by_default)
2351
1460
else:
2352
1461
logger.warning("Client %s was not approved",
2353
1462
client.name)
2355
1464
# Emit D-Bus signal
2356
1465
client.Rejected("Denied")
2357
1466
return
2358
2359
# wait until timeout or approved
1467
1468
#wait until timeout or approved
2360
1469
time = datetime.datetime.now()
2361
1470
client.changedstate.acquire()
2362
client.changedstate.wait(delay.total_seconds())
1471
(client.changedstate.wait
1472
(float(client._timedelta_to_milliseconds(delay)
1473
/ 1000)))
2363
1474
client.changedstate.release()
2364
1475
time2 = datetime.datetime.now()
2365
1476
if (time2 - time) >= delay:
2375
1486
break
2376
1487
else:
2377
1488
delay -= time2 - time
2378
2379
try:
2380
session.send(client.secret)
2381
except gnutls.Error as error:
2382
logger.warning("gnutls send failed",
2383
exc_info=error)
2384
return
2385
1489
1490
sent_size = 0
1491
while sent_size < len(client.secret):
1492
try:
1493
sent = session.send(client.secret[sent_size:])
1494
except gnutls.errors.GNUTLSError as error:
1495
logger.warning("gnutls send failed")
1496
return
1497
logger.debug("Sent: %d, remaining: %d",
1498
sent, len(client.secret)
1499
- (sent_size + sent))
1500
sent_size += sent
1501
2386
1502
logger.info("Sending secret to %s", client.name)
2387
1503
# bump the timeout using extended_timeout
2388
client.bump_timeout(client.extended_timeout)
1504
client.checked_ok(client.extended_timeout)
2389
1505
if self.server.use_dbus:
2390
1506
# Emit D-Bus signal
2391
1507
client.GotSecret()
2392
1508
2393
1509
finally:
2394
1510
if approval_required:
2395
1511
client.approvals_pending -= 1
2396
1512
try:
2397
1513
session.bye()
2398
except gnutls.Error as error:
2399
logger.warning("GnuTLS bye failed",
2400
exc_info=error)
2401
1514
except gnutls.errors.GNUTLSError as error:
1515
logger.warning("GnuTLS bye failed")
1516
2402
1517
@staticmethod
2403
1518
def peer_certificate(session):
2404
"Return the peer's certificate as a bytestring"
2405
try:
2406
cert_type = gnutls.certificate_type_get2(session._c_object,
2407
gnutls.CTYPE_PEERS)
2408
except AttributeError:
2409
cert_type = gnutls.certificate_type_get(session._c_object)
2410
if gnutls.has_rawpk:
2411
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2412
else:
2413
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2414
# If not a valid certificate type...
2415
if cert_type not in valid_cert_types:
2416
logger.info("Cert type %r not in %r", cert_type,
2417
valid_cert_types)
2418
# ...return invalid data
2419
return b""
1519
"Return the peer's OpenPGP certificate as a bytestring"
1520
# If not an OpenPGP certificate...
1521
if (gnutls.library.functions
1522
.gnutls_certificate_type_get(session._c_object)
1523
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1524
# ...do the normal thing
1525
return session.peer_certificate
2420
1526
list_size = ctypes.c_uint(1)
2421
cert_list = (gnutls.certificate_get_peers
1527
cert_list = (gnutls.library.functions
1528
.gnutls_certificate_get_peers
2422
1529
(session._c_object, ctypes.byref(list_size)))
2423
1530
if not bool(cert_list) and list_size.value != 0:
2424
raise gnutls.Error("error getting peer certificate")
1531
raise gnutls.errors.GNUTLSError("error getting peer"
1532
" certificate")
2425
1533
if list_size.value == 0:
2426
1534
return None
2427
1535
cert = cert_list[0]
2428
1536
return ctypes.string_at(cert.data, cert.size)
2429
2430
@staticmethod
2431
def key_id(certificate):
2432
"Convert a certificate bytestring to a hexdigit key ID"
2433
# New GnuTLS "datum" with the public key
2434
datum = gnutls.datum_t(
2435
ctypes.cast(ctypes.c_char_p(certificate),
2436
ctypes.POINTER(ctypes.c_ubyte)),
2437
ctypes.c_uint(len(certificate)))
2438
# XXX all these need to be created in the gnutls "module"
2439
# New empty GnuTLS certificate
2440
pubkey = gnutls.pubkey_t()
2441
gnutls.pubkey_init(ctypes.byref(pubkey))
2442
# Import the raw public key into the certificate
2443
gnutls.pubkey_import(pubkey,
2444
ctypes.byref(datum),
2445
gnutls.X509_FMT_DER)
2446
# New buffer for the key ID
2447
buf = ctypes.create_string_buffer(32)
2448
buf_len = ctypes.c_size_t(len(buf))
2449
# Get the key ID from the raw public key into the buffer
2450
gnutls.pubkey_get_key_id(pubkey,
2451
gnutls.KEYID_USE_SHA256,
2452
ctypes.cast(ctypes.byref(buf),
2453
ctypes.POINTER(ctypes.c_ubyte)),
2454
ctypes.byref(buf_len))
2455
# Deinit the certificate
2456
gnutls.pubkey_deinit(pubkey)
2457
2458
# Convert the buffer to a Python bytestring
2459
key_id = ctypes.string_at(buf, buf_len.value)
2460
# Convert the bytestring to hexadecimal notation
2461
hex_key_id = binascii.hexlify(key_id).upper()
2462
return hex_key_id
2463
1537
2464
1538
@staticmethod
2465
1539
def fingerprint(openpgp):
2466
1540
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2467
1541
# New GnuTLS "datum" with the OpenPGP public key
2468
datum = gnutls.datum_t(
2469
ctypes.cast(ctypes.c_char_p(openpgp),
2470
ctypes.POINTER(ctypes.c_ubyte)),
2471
ctypes.c_uint(len(openpgp)))
1542
datum = (gnutls.library.types
1543
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1544
ctypes.POINTER
1545
(ctypes.c_ubyte)),
1546
ctypes.c_uint(len(openpgp))))
2472
1547
# New empty GnuTLS certificate
2473
crt = gnutls.openpgp_crt_t()
2474
gnutls.openpgp_crt_init(ctypes.byref(crt))
1548
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1549
(gnutls.library.functions
1550
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2475
1551
# Import the OpenPGP public key into the certificate
2476
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2477
gnutls.OPENPGP_FMT_RAW)
1552
(gnutls.library.functions
1553
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1554
gnutls.library.constants
1555
.GNUTLS_OPENPGP_FMT_RAW))
2478
1556
# Verify the self signature in the key
2479
1557
crtverify = ctypes.c_uint()
2480
gnutls.openpgp_crt_verify_self(crt, 0,
2481
ctypes.byref(crtverify))
1558
(gnutls.library.functions
1559
.gnutls_openpgp_crt_verify_self(crt, 0,
1560
ctypes.byref(crtverify)))
2482
1561
if crtverify.value != 0:
2483
gnutls.openpgp_crt_deinit(crt)
2484
raise gnutls.CertificateSecurityError(code
2485
=crtverify.value)
1562
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1563
raise (gnutls.errors.CertificateSecurityError
1564
("Verify failed"))
2486
1565
# New buffer for the fingerprint
2487
1566
buf = ctypes.create_string_buffer(20)
2488
1567
buf_len = ctypes.c_size_t()
2489
1568
# Get the fingerprint from the certificate into the buffer
2490
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2491
ctypes.byref(buf_len))
1569
(gnutls.library.functions
1570
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1571
ctypes.byref(buf_len)))
2492
1572
# Deinit the certificate
2493
gnutls.openpgp_crt_deinit(crt)
1573
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2494
1574
# Convert the buffer to a Python bytestring
2495
1575
fpr = ctypes.string_at(buf, buf_len.value)
2496
1576
# Convert the bytestring to hexadecimal notation
2497
hex_fpr = binascii.hexlify(fpr).upper()
1577
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
2498
1578
return hex_fpr
2499
1579
2500
1580
2501
1581
class MultiprocessingMixIn(object):
2502
1582
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2503
2504
1583
def sub_process_main(self, request, address):
2505
1584
try:
2506
1585
self.finish_request(request, address)
2507
except Exception:
1586
except:
2508
1587
self.handle_error(request, address)
2509
1588
self.close_request(request)
2510
1589
2511
1590
def process_request(self, request, address):
2512
1591
"""Start a new process to process the request."""
2513
proc = multiprocessing.Process(target=self.sub_process_main,
2514
args=(request, address))
1592
proc = multiprocessing.Process(target = self.sub_process_main,
1593
args = (request,
1594
address))
2515
1595
proc.start()
2516
1596
return proc
2517
1597
2518
1598
2519
1599
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2520
1600
""" adds a pipe to the MixIn """
2521
2522
1601
def process_request(self, request, client_address):
2523
1602
"""Overrides and wraps the original process_request().
2524
1603
2525
1604
This function creates a new pipe in self.pipe
2526
1605
"""
2527
1606
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2528
1607
2529
1608
proc = MultiprocessingMixIn.process_request(self, request,
2530
1609
client_address)
2531
1610
self.child_pipe.close()
2532
1611
self.add_pipe(parent_pipe, proc)
2533
1612
2534
1613
def add_pipe(self, parent_pipe, proc):
2535
1614
"""Dummy function; override as necessary"""
2536
raise NotImplementedError()
1615
raise NotImplementedError
2537
1616
2538
1617
2539
1618
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2540
1619
socketserver.TCPServer, object):
2541
1620
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
2542
1621
2543
1622
Attributes:
2544
1623
enabled: Boolean; whether this server is activated yet
2545
1624
interface: None or a network interface name (string)
2546
1625
use_ipv6: Boolean; to use IPv6 or not
2547
1626
"""
2548
2549
1627
def __init__(self, server_address, RequestHandlerClass,
2550
interface=None,
2551
use_ipv6=True,
2552
socketfd=None):
2553
"""If socketfd is set, use that file descriptor instead of
2554
creating a new one with socket.socket().
2555
"""
1628
interface=None, use_ipv6=True):
2556
1629
self.interface = interface
2557
1630
if use_ipv6:
2558
1631
self.address_family = socket.AF_INET6
2559
if socketfd is not None:
2560
# Save the file descriptor
2561
self.socketfd = socketfd
2562
# Save the original socket.socket() function
2563
self.socket_socket = socket.socket
2564
2565
# To implement --socket, we monkey patch socket.socket.
2566
#
2567
# (When socketserver.TCPServer is a new-style class, we
2568
# could make self.socket into a property instead of monkey
2569
# patching socket.socket.)
2570
#
2571
# Create a one-time-only replacement for socket.socket()
2572
@functools.wraps(socket.socket)
2573
def socket_wrapper(*args, **kwargs):
2574
# Restore original function so subsequent calls are
2575
# not affected.
2576
socket.socket = self.socket_socket
2577
del self.socket_socket
2578
# This time only, return a new socket object from the
2579
# saved file descriptor.
2580
return socket.fromfd(self.socketfd, *args, **kwargs)
2581
# Replace socket.socket() function with wrapper
2582
socket.socket = socket_wrapper
2583
# The socketserver.TCPServer.__init__ will call
2584
# socket.socket(), which might be our replacement,
2585
# socket_wrapper(), if socketfd was set.
2586
1632
socketserver.TCPServer.__init__(self, server_address,
2587
1633
RequestHandlerClass)
2588
2589
1634
def server_bind(self):
2590
1635
"""This overrides the normal server_bind() function
2591
1636
to bind to an interface if one was specified, and also NOT to
2592
1637
bind to an address or port if they were not specified."""
2593
global SO_BINDTODEVICE
2594
1638
if self.interface is not None:
2595
1639
if SO_BINDTODEVICE is None:
2596
# Fall back to a hard-coded value which seems to be
2597
# common enough.
2598
logger.warning("SO_BINDTODEVICE not found, trying 25")
2599
SO_BINDTODEVICE = 25
2600
try:
2601
self.socket.setsockopt(
2602
socket.SOL_SOCKET, SO_BINDTODEVICE,
2603
(self.interface + "\0").encode("utf-8"))
2604
except socket.error as error:
2605
if error.errno == errno.EPERM:
2606
logger.error("No permission to bind to"
2607
" interface %s", self.interface)
2608
elif error.errno == errno.ENOPROTOOPT:
2609
logger.error("SO_BINDTODEVICE not available;"
2610
" cannot bind to interface %s",
2611
self.interface)
2612
elif error.errno == errno.ENODEV:
2613
logger.error("Interface %s does not exist,"
2614
" cannot bind", self.interface)
2615
else:
2616
raise
1640
logger.error("SO_BINDTODEVICE does not exist;"
1641
" cannot bind to interface %s",
1642
self.interface)
1643
else:
1644
try:
1645
self.socket.setsockopt(socket.SOL_SOCKET,
1646
SO_BINDTODEVICE,
1647
str(self.interface
1648
+ '\0'))
1649
except socket.error as error:
1650
if error[0] == errno.EPERM:
1651
logger.error("No permission to"
1652
" bind to interface %s",
1653
self.interface)
1654
elif error[0] == errno.ENOPROTOOPT:
1655
logger.error("SO_BINDTODEVICE not available;"
1656
" cannot bind to interface %s",
1657
self.interface)
1658
else:
1659
raise
2617
1660
# Only bind(2) the socket if we really need to.
2618
1661
if self.server_address[0] or self.server_address[1]:
2619
1662
if not self.server_address[0]:
2620
1663
if self.address_family == socket.AF_INET6:
2621
any_address = "::" # in6addr_any
1664
any_address = "::" # in6addr_any
2622
1665
else:
2623
any_address = "0.0.0.0" # INADDR_ANY
1666
any_address = socket.INADDR_ANY
2624
1667
self.server_address = (any_address,
2625
1668
self.server_address[1])
2626
1669
elif not self.server_address[1]:
2627
self.server_address = (self.server_address[0], 0)
1670
self.server_address = (self.server_address[0],
1671
0)
2628
1672
# if self.interface:
2629
1673
# self.server_address = (self.server_address[0],
2630
1674
# 0, # port
2636
1680
2637
1681
class MandosServer(IPv6_TCPServer):
2638
1682
"""Mandos server.
2639
1683
2640
1684
Attributes:
2641
1685
clients: set of Client objects
2642
1686
gnutls_priority GnuTLS priority string
2643
1687
use_dbus: Boolean; to emit D-Bus signals or not
2644
2645
Assumes a GLib.MainLoop event loop.
1688
1689
Assumes a gobject.MainLoop event loop.
2646
1690
"""
2647
2648
1691
def __init__(self, server_address, RequestHandlerClass,
2649
interface=None,
2650
use_ipv6=True,
2651
clients=None,
2652
gnutls_priority=None,
2653
use_dbus=True,
2654
socketfd=None):
1692
interface=None, use_ipv6=True, clients=None,
1693
gnutls_priority=None, use_dbus=True):
2655
1694
self.enabled = False
2656
1695
self.clients = clients
2657
1696
if self.clients is None:
2660
1699
self.gnutls_priority = gnutls_priority
2661
1700
IPv6_TCPServer.__init__(self, server_address,
2662
1701
RequestHandlerClass,
2663
interface=interface,
2664
use_ipv6=use_ipv6,
2665
socketfd=socketfd)
2666
1702
interface = interface,
1703
use_ipv6 = use_ipv6)
2667
1704
def server_activate(self):
2668
1705
if self.enabled:
2669
1706
return socketserver.TCPServer.server_activate(self)
2670
1707
2671
1708
def enable(self):
2672
1709
self.enabled = True
2673
1710
2674
1711
def add_pipe(self, parent_pipe, proc):
2675
1712
# Call "handle_ipc" for both data and EOF events
2676
GLib.io_add_watch(
2677
parent_pipe.fileno(),
2678
GLib.IO_IN | GLib.IO_HUP,
2679
functools.partial(self.handle_ipc,
2680
parent_pipe=parent_pipe,
2681
proc=proc))
2682
2683
def handle_ipc(self, source, condition,
2684
parent_pipe=None,
2685
proc=None,
2686
client_object=None):
1713
gobject.io_add_watch(parent_pipe.fileno(),
1714
gobject.IO_IN | gobject.IO_HUP,
1715
functools.partial(self.handle_ipc,
1716
parent_pipe =
1717
parent_pipe,
1718
proc = proc))
1719
1720
def handle_ipc(self, source, condition, parent_pipe=None,
1721
proc = None, client_object=None):
1722
condition_names = {
1723
gobject.IO_IN: "IN", # There is data to read.
1724
gobject.IO_OUT: "OUT", # Data can be written (without
1725
# blocking).
1726
gobject.IO_PRI: "PRI", # There is urgent data to read.
1727
gobject.IO_ERR: "ERR", # Error condition.
1728
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1729
# broken, usually for pipes and
1730
# sockets).
1731
}
1732
conditions_string = ' | '.join(name
1733
for cond, name in
1734
condition_names.iteritems()
1735
if cond & condition)
2687
1736
# error, or the other end of multiprocessing.Pipe has closed
2688
if condition & (GLib.IO_ERR | GLib.IO_HUP):
1737
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2689
1738
# Wait for other process to exit
2690
1739
proc.join()
2691
1740
return False
2692
1741
2693
1742
# Read a request from the child
2694
1743
request = parent_pipe.recv()
2695
1744
command = request[0]
2696
1745
2697
1746
if command == 'init':
2698
key_id = request[1].decode("ascii")
2699
fpr = request[2].decode("ascii")
2700
address = request[3]
2701
2702
for c in self.clients.values():
2703
if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2704
continue
2705
if key_id and c.key_id == key_id:
2706
client = c
2707
break
2708
if fpr and c.fingerprint == fpr:
1747
fpr = request[1]
1748
address = request[2]
1749
1750
for c in self.clients.itervalues():
1751
if c.fingerprint == fpr:
2709
1752
client = c
2710
1753
break
2711
1754
else:
2712
logger.info("Client not found for key ID: %s, address"
2713
": %s", key_id or fpr, address)
1755
logger.info("Client not found for fingerprint: %s, ad"
1756
"dress: %s", fpr, address)
2714
1757
if self.use_dbus:
2715
1758
# Emit D-Bus signal
2716
mandos_dbus_service.ClientNotFound(key_id or fpr,
1759
mandos_dbus_service.ClientNotFound(fpr,
2717
1760
address[0])
2718
1761
parent_pipe.send(False)
2719
1762
return False
2720
2721
GLib.io_add_watch(
2722
parent_pipe.fileno(),
2723
GLib.IO_IN | GLib.IO_HUP,
2724
functools.partial(self.handle_ipc,
2725
parent_pipe=parent_pipe,
2726
proc=proc,
2727
client_object=client))
1763
1764
gobject.io_add_watch(parent_pipe.fileno(),
1765
gobject.IO_IN | gobject.IO_HUP,
1766
functools.partial(self.handle_ipc,
1767
parent_pipe =
1768
parent_pipe,
1769
proc = proc,
1770
client_object =
1771
client))
2728
1772
parent_pipe.send(True)
2729
1773
# remove the old hook in favor of the new above hook on
2730
1774
# same fileno
2733
1777
funcname = request[1]
2734
1778
args = request[2]
2735
1779
kwargs = request[3]
2736
1780
2737
1781
parent_pipe.send(('data', getattr(client_object,
2738
1782
funcname)(*args,
2739
**kwargs)))
2740
1783
**kwargs)))
1784
2741
1785
if command == 'getattr':
2742
1786
attrname = request[1]
2743
if isinstance(client_object.__getattribute__(attrname),
2744
collections.Callable):
2745
parent_pipe.send(('function', ))
1787
if callable(client_object.__getattribute__(attrname)):
1788
parent_pipe.send(('function',))
2746
1789
else:
2747
parent_pipe.send((
2748
'data', client_object.__getattribute__(attrname)))
2749
1790
parent_pipe.send(('data', client_object
1791
.__getattribute__(attrname)))
1792
2750
1793
if command == 'setattr':
2751
1794
attrname = request[1]
2752
1795
value = request[2]
2753
1796
setattr(client_object, attrname, value)
2754
1797
2755
1798
return True
2756
1799
2757
1800
2758
def rfc3339_duration_to_delta(duration):
2759
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2760
2761
>>> rfc3339_duration_to_delta("P7D")
2762
datetime.timedelta(7)
2763
>>> rfc3339_duration_to_delta("PT60S")
2764
datetime.timedelta(0, 60)
2765
>>> rfc3339_duration_to_delta("PT60M")
2766
datetime.timedelta(0, 3600)
2767
>>> rfc3339_duration_to_delta("PT24H")
2768
datetime.timedelta(1)
2769
>>> rfc3339_duration_to_delta("P1W")
2770
datetime.timedelta(7)
2771
>>> rfc3339_duration_to_delta("PT5M30S")
2772
datetime.timedelta(0, 330)
2773
>>> rfc3339_duration_to_delta("P1DT3M20S")
2774
datetime.timedelta(1, 200)
2775
"""
2776
2777
# Parsing an RFC 3339 duration with regular expressions is not
2778
# possible - there would have to be multiple places for the same
2779
# values, like seconds. The current code, while more esoteric, is
2780
# cleaner without depending on a parsing library. If Python had a
2781
# built-in library for parsing we would use it, but we'd like to
2782
# avoid excessive use of external libraries.
2783
2784
# New type for defining tokens, syntax, and semantics all-in-one
2785
Token = collections.namedtuple("Token", (
2786
"regexp", # To match token; if "value" is not None, must have
2787
# a "group" containing digits
2788
"value", # datetime.timedelta or None
2789
"followers")) # Tokens valid after this token
2790
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2791
# the "duration" ABNF definition in RFC 3339, Appendix A.
2792
token_end = Token(re.compile(r"$"), None, frozenset())
2793
token_second = Token(re.compile(r"(\d+)S"),
2794
datetime.timedelta(seconds=1),
2795
frozenset((token_end, )))
2796
token_minute = Token(re.compile(r"(\d+)M"),
2797
datetime.timedelta(minutes=1),
2798
frozenset((token_second, token_end)))
2799
token_hour = Token(re.compile(r"(\d+)H"),
2800
datetime.timedelta(hours=1),
2801
frozenset((token_minute, token_end)))
2802
token_time = Token(re.compile(r"T"),
2803
None,
2804
frozenset((token_hour, token_minute,
2805
token_second)))
2806
token_day = Token(re.compile(r"(\d+)D"),
2807
datetime.timedelta(days=1),
2808
frozenset((token_time, token_end)))
2809
token_month = Token(re.compile(r"(\d+)M"),
2810
datetime.timedelta(weeks=4),
2811
frozenset((token_day, token_end)))
2812
token_year = Token(re.compile(r"(\d+)Y"),
2813
datetime.timedelta(weeks=52),
2814
frozenset((token_month, token_end)))
2815
token_week = Token(re.compile(r"(\d+)W"),
2816
datetime.timedelta(weeks=1),
2817
frozenset((token_end, )))
2818
token_duration = Token(re.compile(r"P"), None,
2819
frozenset((token_year, token_month,
2820
token_day, token_time,
2821
token_week)))
2822
# Define starting values:
2823
# Value so far
2824
value = datetime.timedelta()
2825
found_token = None
2826
# Following valid tokens
2827
followers = frozenset((token_duration, ))
2828
# String left to parse
2829
s = duration
2830
# Loop until end token is found
2831
while found_token is not token_end:
2832
# Search for any currently valid tokens
2833
for token in followers:
2834
match = token.regexp.match(s)
2835
if match is not None:
2836
# Token found
2837
if token.value is not None:
2838
# Value found, parse digits
2839
factor = int(match.group(1), 10)
2840
# Add to value so far
2841
value += factor * token.value
2842
# Strip token from string
2843
s = token.regexp.sub("", s, 1)
2844
# Go to found token
2845
found_token = token
2846
# Set valid next tokens
2847
followers = found_token.followers
2848
break
2849
else:
2850
# No currently valid tokens were found
2851
raise ValueError("Invalid RFC 3339 duration: {!r}"
2852
.format(duration))
2853
# End token found
2854
return value
2855
2856
2857
1801
def string_to_delta(interval):
2858
1802
"""Parse a string and return a datetime.timedelta
2859
1803
2860
1804
>>> string_to_delta('7d')
2861
1805
datetime.timedelta(7)
2862
1806
>>> string_to_delta('60s')
2870
1814
>>> string_to_delta('5m 30s')
2871
1815
datetime.timedelta(0, 330)
2872
1816
"""
2873
2874
try:
2875
return rfc3339_duration_to_delta(interval)
2876
except ValueError:
2877
pass
2878
2879
1817
timevalue = datetime.timedelta(0)
2880
1818
for s in interval.split():
2881
1819
try:
2882
suffix = s[-1]
1820
suffix = unicode(s[-1])
2883
1821
value = int(s[:-1])
2884
1822
if suffix == "d":
2885
1823
delta = datetime.timedelta(value)
2892
1830
elif suffix == "w":
2893
1831
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2894
1832
else:
2895
raise ValueError("Unknown suffix {!r}".format(suffix))
2896
except IndexError as e:
1833
raise ValueError("Unknown suffix %r" % suffix)
1834
except (ValueError, IndexError) as e:
2897
1835
raise ValueError(*(e.args))
2898
1836
timevalue += delta
2899
1837
return timevalue
2900
1838
2901
1839
2902
def daemon(nochdir=False, noclose=False):
1840
def if_nametoindex(interface):
1841
"""Call the C function if_nametoindex(), or equivalent
1842
1843
Note: This function cannot accept a unicode string."""
1844
global if_nametoindex
1845
try:
1846
if_nametoindex = (ctypes.cdll.LoadLibrary
1847
(ctypes.util.find_library("c"))
1848
.if_nametoindex)
1849
except (OSError, AttributeError):
1850
logger.warning("Doing if_nametoindex the hard way")
1851
def if_nametoindex(interface):
1852
"Get an interface index the hard way, i.e. using fcntl()"
1853
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1854
with contextlib.closing(socket.socket()) as s:
1855
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1856
struct.pack(str("16s16x"),
1857
interface))
1858
interface_index = struct.unpack(str("I"),
1859
ifreq[16:20])[0]
1860
return interface_index
1861
return if_nametoindex(interface)
1862
1863
1864
def daemon(nochdir = False, noclose = False):
2903
1865
"""See daemon(3). Standard BSD Unix function.
2904
1866
2905
1867
This should really exist as os.daemon, but it doesn't (yet)."""
2906
1868
if os.fork():
2907
1869
sys.exit()
2912
1874
sys.exit()
2913
1875
if not noclose:
2914
1876
# Close all standard open file descriptors
2915
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1877
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2916
1878
if not stat.S_ISCHR(os.fstat(null).st_mode):
2917
1879
raise OSError(errno.ENODEV,
2918
"{} not a character device"
2919
.format(os.devnull))
1880
"%s not a character device"
1881
% os.path.devnull)
2920
1882
os.dup2(null, sys.stdin.fileno())
2921
1883
os.dup2(null, sys.stdout.fileno())
2922
1884
os.dup2(null, sys.stderr.fileno())
2925
1887
2926
1888
2927
1889
def main():
2928
1890
2929
1891
##################################################################
2930
1892
# Parsing of options, both command line and config file
2931
1893
2932
1894
parser = argparse.ArgumentParser()
2933
1895
parser.add_argument("-v", "--version", action="version",
2934
version="%(prog)s {}".format(version),
1896
version = "%%(prog)s %s" % version,
2935
1897
help="show version number and exit")
2936
1898
parser.add_argument("-i", "--interface", metavar="IF",
2937
1899
help="Bind to interface IF")
2943
1905
help="Run self-test")
2944
1906
parser.add_argument("--debug", action="store_true",
2945
1907
help="Debug mode; run in foreground and log"
2946
" to terminal", default=None)
1908
" to terminal")
2947
1909
parser.add_argument("--debuglevel", metavar="LEVEL",
2948
1910
help="Debug level for stdout output")
2949
1911
parser.add_argument("--priority", help="GnuTLS"
2956
1918
" files")
2957
1919
parser.add_argument("--no-dbus", action="store_false",
2958
1920
dest="use_dbus", help="Do not provide D-Bus"
2959
" system bus interface", default=None)
1921
" system bus interface")
2960
1922
parser.add_argument("--no-ipv6", action="store_false",
2961
dest="use_ipv6", help="Do not use IPv6",
2962
default=None)
1923
dest="use_ipv6", help="Do not use IPv6")
2963
1924
parser.add_argument("--no-restore", action="store_false",
2964
dest="restore", help="Do not restore stored"
2965
" state", default=None)
2966
parser.add_argument("--socket", type=int,
2967
help="Specify a file descriptor to a network"
2968
" socket to use instead of creating one")
2969
parser.add_argument("--statedir", metavar="DIR",
2970
help="Directory to save/restore state in")
2971
parser.add_argument("--foreground", action="store_true",
2972
help="Run in foreground", default=None)
2973
parser.add_argument("--no-zeroconf", action="store_false",
2974
dest="zeroconf", help="Do not use Zeroconf",
2975
default=None)
1925
dest="restore", help="Do not restore stored state",
1926
default=True)
2976
1927
2977
1928
options = parser.parse_args()
2978
1929
2979
1930
if options.check:
2980
1931
import doctest
2981
fail_count, test_count = doctest.testmod()
2982
sys.exit(os.EX_OK if fail_count == 0 else 1)
2983
1932
doctest.testmod()
1933
sys.exit()
1934
2984
1935
# Default values for config file for server-global settings
2985
if gnutls.has_rawpk:
2986
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
2987
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
2988
else:
2989
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2990
":+SIGN-DSA-SHA256")
2991
server_defaults = {"interface": "",
2992
"address": "",
2993
"port": "",
2994
"debug": "False",
2995
"priority": priority,
2996
"servicename": "Mandos",
2997
"use_dbus": "True",
2998
"use_ipv6": "True",
2999
"debuglevel": "",
3000
"restore": "True",
3001
"socket": "",
3002
"statedir": "/var/lib/mandos",
3003
"foreground": "False",
3004
"zeroconf": "True",
3005
}
3006
del priority
3007
1936
server_defaults = { "interface": "",
1937
"address": "",
1938
"port": "",
1939
"debug": "False",
1940
"priority":
1941
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1942
"servicename": "Mandos",
1943
"use_dbus": "True",
1944
"use_ipv6": "True",
1945
"debuglevel": "",
1946
}
1947
3008
1948
# Parse config file for server-global settings
3009
1949
server_config = configparser.SafeConfigParser(server_defaults)
3010
1950
del server_defaults
3011
server_config.read(os.path.join(options.configdir, "mandos.conf"))
1951
server_config.read(os.path.join(options.configdir,
1952
"mandos.conf"))
3012
1953
# Convert the SafeConfigParser object to a dict
3013
1954
server_settings = server_config.defaults()
3014
1955
# Use the appropriate methods on the non-string config options
3015
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3016
"foreground", "zeroconf"):
1956
for option in ("debug", "use_dbus", "use_ipv6"):
3017
1957
server_settings[option] = server_config.getboolean("DEFAULT",
3018
1958
option)
3019
1959
if server_settings["port"]:
3020
1960
server_settings["port"] = server_config.getint("DEFAULT",
3021
1961
"port")
3022
if server_settings["socket"]:
3023
server_settings["socket"] = server_config.getint("DEFAULT",
3024
"socket")
3025
# Later, stdin will, and stdout and stderr might, be dup'ed
3026
# over with an opened os.devnull. But we don't want this to
3027
# happen with a supplied network socket.
3028
if 0 <= server_settings["socket"] <= 2:
3029
server_settings["socket"] = os.dup(server_settings
3030
["socket"])
3031
1962
del server_config
3032
1963
3033
1964
# Override the settings from the config file with command line
3034
1965
# options, if set.
3035
1966
for option in ("interface", "address", "port", "debug",
3036
"priority", "servicename", "configdir", "use_dbus",
3037
"use_ipv6", "debuglevel", "restore", "statedir",
3038
"socket", "foreground", "zeroconf"):
1967
"priority", "servicename", "configdir",
1968
"use_dbus", "use_ipv6", "debuglevel", "restore"):
3039
1969
value = getattr(options, option)
3040
1970
if value is not None:
3041
1971
server_settings[option] = value
3042
1972
del options
3043
1973
# Force all strings to be unicode
3044
1974
for option in server_settings.keys():
3045
if isinstance(server_settings[option], bytes):
3046
server_settings[option] = (server_settings[option]
3047
.decode("utf-8"))
3048
# Force all boolean options to be boolean
3049
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3050
"foreground", "zeroconf"):
3051
server_settings[option] = bool(server_settings[option])
3052
# Debug implies foreground
3053
if server_settings["debug"]:
3054
server_settings["foreground"] = True
1975
if type(server_settings[option]) is str:
1976
server_settings[option] = unicode(server_settings[option])
3055
1977
# Now we have our good server settings in "server_settings"
3056
1978
3057
1979
##################################################################
3058
3059
if (not server_settings["zeroconf"]
3060
and not (server_settings["port"]
3061
or server_settings["socket"] != "")):
3062
parser.error("Needs port or socket to work without Zeroconf")
3063
1980
3064
1981
# For convenience
3065
1982
debug = server_settings["debug"]
3066
1983
debuglevel = server_settings["debuglevel"]
3067
1984
use_dbus = server_settings["use_dbus"]
3068
1985
use_ipv6 = server_settings["use_ipv6"]
3069
stored_state_path = os.path.join(server_settings["statedir"],
3070
stored_state_file)
3071
foreground = server_settings["foreground"]
3072
zeroconf = server_settings["zeroconf"]
3073
3074
if debug:
3075
initlogger(debug, logging.DEBUG)
3076
else:
3077
if not debuglevel:
3078
initlogger(debug)
3079
else:
3080
level = getattr(logging, debuglevel.upper())
3081
initlogger(debug, level)
3082
1986
3083
1987
if server_settings["servicename"] != "Mandos":
3084
syslogger.setFormatter(
3085
logging.Formatter('Mandos ({}) [%(process)d]:'
3086
' %(levelname)s: %(message)s'.format(
3087
server_settings["servicename"])))
3088
1988
syslogger.setFormatter(logging.Formatter
1989
('Mandos (%s) [%%(process)d]:'
1990
' %%(levelname)s: %%(message)s'
1991
% server_settings["servicename"]))
1992
3089
1993
# Parse config file with clients
3090
client_config = configparser.SafeConfigParser(Client
3091
.client_defaults)
1994
client_defaults = { "timeout": "5m",
1995
"extended_timeout": "15m",
1996
"interval": "2m",
1997
"checker": "fping -q -- %%(host)s",
1998
"host": "",
1999
"approval_delay": "0s",
2000
"approval_duration": "1s",
2001
}
2002
client_config = configparser.SafeConfigParser(client_defaults)
3092
2003
client_config.read(os.path.join(server_settings["configdir"],
3093
2004
"clients.conf"))
3094
2005
3095
2006
global mandos_dbus_service
3096
2007
mandos_dbus_service = None
3097
3098
socketfd = None
3099
if server_settings["socket"] != "":
3100
socketfd = server_settings["socket"]
3101
tcp_server = MandosServer(
3102
(server_settings["address"], server_settings["port"]),
3103
ClientHandler,
3104
interface=(server_settings["interface"] or None),
3105
use_ipv6=use_ipv6,
3106
gnutls_priority=server_settings["priority"],
3107
use_dbus=use_dbus,
3108
socketfd=socketfd)
3109
if not foreground:
3110
pidfilename = "/run/mandos.pid"
3111
if not os.path.isdir("/run/."):
3112
pidfilename = "/var/run/mandos.pid"
3113
pidfile = None
3114
try:
3115
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3116
except IOError as e:
3117
logger.error("Could not open file %r", pidfilename,
3118
exc_info=e)
3119
3120
for name, group in (("_mandos", "_mandos"),
3121
("mandos", "mandos"),
3122
("nobody", "nogroup")):
3123
try:
3124
uid = pwd.getpwnam(name).pw_uid
3125
gid = pwd.getpwnam(group).pw_gid
3126
break
2008
2009
tcp_server = MandosServer((server_settings["address"],
2010
server_settings["port"]),
2011
ClientHandler,
2012
interface=(server_settings["interface"]
2013
or None),
2014
use_ipv6=use_ipv6,
2015
gnutls_priority=
2016
server_settings["priority"],
2017
use_dbus=use_dbus)
2018
if not debug:
2019
pidfilename = "/var/run/mandos.pid"
2020
try:
2021
pidfile = open(pidfilename, "w")
2022
except IOError:
2023
logger.error("Could not open file %r", pidfilename)
2024
2025
try:
2026
uid = pwd.getpwnam("_mandos").pw_uid
2027
gid = pwd.getpwnam("_mandos").pw_gid
2028
except KeyError:
2029
try:
2030
uid = pwd.getpwnam("mandos").pw_uid
2031
gid = pwd.getpwnam("mandos").pw_gid
3127
2032
except KeyError:
3128
continue
3129
else:
3130
uid = 65534
3131
gid = 65534
2033
try:
2034
uid = pwd.getpwnam("nobody").pw_uid
2035
gid = pwd.getpwnam("nobody").pw_gid
2036
except KeyError:
2037
uid = 65534
2038
gid = 65534
3132
2039
try:
3133
2040
os.setgid(gid)
3134
2041
os.setuid(uid)
3135
if debug:
3136
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3137
gid))
3138
2042
except OSError as error:
3139
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3140
.format(uid, gid, os.strerror(error.errno)))
3141
if error.errno != errno.EPERM:
3142
raise
3143
2043
if error[0] != errno.EPERM:
2044
raise error
2045
2046
if not debug and not debuglevel:
2047
logger.setLevel(logging.WARNING)
2048
if debuglevel:
2049
level = getattr(logging, debuglevel.upper())
2050
logger.setLevel(level)
2051
3144
2052
if debug:
2053
logger.setLevel(logging.DEBUG)
3145
2054
# Enable all possible GnuTLS debugging
3146
2055
3147
2056
# "Use a log level over 10 to enable all debugging options."
3148
2057
# - GnuTLS manual
3149
gnutls.global_set_log_level(11)
3150
3151
@gnutls.log_func
2058
gnutls.library.functions.gnutls_global_set_log_level(11)
2059
2060
@gnutls.library.types.gnutls_log_func
3152
2061
def debug_gnutls(level, string):
3153
2062
logger.debug("GnuTLS: %s", string[:-1])
3154
3155
gnutls.global_set_log_function(debug_gnutls)
3156
2063
2064
(gnutls.library.functions
2065
.gnutls_global_set_log_function(debug_gnutls))
2066
3157
2067
# Redirect stdin so all checkers get /dev/null
3158
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2068
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3159
2069
os.dup2(null, sys.stdin.fileno())
3160
2070
if null > 2:
3161
2071
os.close(null)
3162
2072
else:
2073
# No console logging
2074
logger.removeHandler(console)
2075
3163
2076
# Need to fork before connecting to D-Bus
3164
if not foreground:
2077
if not debug:
3165
2078
# Close all input and output, do double fork, etc.
3166
2079
daemon()
3167
3168
# multiprocessing will use threads, so before we use GLib we need
3169
# to inform GLib that threads will be used.
3170
GLib.threads_init()
3171
2080
3172
2081
global main_loop
3173
2082
# From the Avahi example code
3174
DBusGMainLoop(set_as_default=True)
3175
main_loop = GLib.MainLoop()
2083
DBusGMainLoop(set_as_default=True )
2084
main_loop = gobject.MainLoop()
3176
2085
bus = dbus.SystemBus()
3177
2086
# End of Avahi example code
3178
2087
if use_dbus:
3179
2088
try:
3180
2089
bus_name = dbus.service.BusName("se.recompile.Mandos",
3181
bus,
3182
do_not_queue=True)
3183
old_bus_name = dbus.service.BusName(
3184
"se.bsnet.fukt.Mandos", bus,
3185
do_not_queue=True)
3186
except dbus.exceptions.DBusException as e:
3187
logger.error("Disabling D-Bus:", exc_info=e)
2090
bus, do_not_queue=True)
2091
old_bus_name = (dbus.service.BusName
2092
("se.bsnet.fukt.Mandos", bus,
2093
do_not_queue=True))
2094
except dbus.exceptions.NameExistsException as e:
2095
logger.error(unicode(e) + ", disabling D-Bus")
3188
2096
use_dbus = False
3189
2097
server_settings["use_dbus"] = False
3190
2098
tcp_server.use_dbus = False
3191
if zeroconf:
3192
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3193
service = AvahiServiceToSyslog(
3194
name=server_settings["servicename"],
3195
servicetype="_mandos._tcp",
3196
protocol=protocol,
3197
bus=bus)
3198
if server_settings["interface"]:
3199
service.interface = if_nametoindex(
3200
server_settings["interface"].encode("utf-8"))
3201
2099
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2100
service = AvahiServiceToSyslog(name =
2101
server_settings["servicename"],
2102
servicetype = "_mandos._tcp",
2103
protocol = protocol, bus = bus)
2104
if server_settings["interface"]:
2105
service.interface = (if_nametoindex
2106
(str(server_settings["interface"])))
2107
3202
2108
global multiprocessing_manager
3203
2109
multiprocessing_manager = multiprocessing.Manager()
3204
2110
3205
2111
client_class = Client
3206
2112
if use_dbus:
3207
client_class = functools.partial(ClientDBus, bus=bus)
3208
3209
client_settings = Client.config_parser(client_config)
2113
client_class = functools.partial(ClientDBusTransitional,
2114
bus = bus)
2115
2116
special_settings = {
2117
# Some settings need to be accessd by special methods;
2118
# booleans need .getboolean(), etc. Here is a list of them:
2119
"approved_by_default":
2120
lambda section:
2121
client_config.getboolean(section, "approved_by_default"),
2122
}
2123
# Construct a new dict of client settings of this form:
2124
# { client_name: {setting_name: value, ...}, ...}
2125
# with exceptions for any special settings as defined above
2126
client_settings = dict((clientname,
2127
dict((setting,
2128
(value if setting not in special_settings
2129
else special_settings[setting](clientname)))
2130
for setting, value in client_config.items(clientname)))
2131
for clientname in client_config.sections())
2132
3210
2133
old_client_settings = {}
3211
clients_data = {}
3212
3213
# This is used to redirect stdout and stderr for checker processes
3214
global wnull
3215
wnull = open(os.devnull, "w") # A writable /dev/null
3216
# Only used if server is running in foreground but not in debug
3217
# mode
3218
if debug or not foreground:
3219
wnull.close()
3220
3221
# Get client data and settings from last running state.
2134
clients_data = []
2135
2136
# Get client data and settings from last running state.
3222
2137
if server_settings["restore"]:
3223
2138
try:
3224
2139
with open(stored_state_path, "rb") as stored_state:
3225
if sys.version_info.major == 2:
3226
clients_data, old_client_settings = pickle.load(
3227
stored_state)
3228
else:
3229
bytes_clients_data, bytes_old_client_settings = (
3230
pickle.load(stored_state, encoding="bytes"))
3231
# Fix bytes to strings
3232
# clients_data
3233
# .keys()
3234
clients_data = {(key.decode("utf-8")
3235
if isinstance(key, bytes)
3236
else key): value
3237
for key, value in
3238
bytes_clients_data.items()}
3239
del bytes_clients_data
3240
for key in clients_data:
3241
value = {(k.decode("utf-8")
3242
if isinstance(k, bytes) else k): v
3243
for k, v in
3244
clients_data[key].items()}
3245
clients_data[key] = value
3246
# .client_structure
3247
value["client_structure"] = [
3248
(s.decode("utf-8")
3249
if isinstance(s, bytes)
3250
else s) for s in
3251
value["client_structure"]]
3252
# .name & .host
3253
for k in ("name", "host"):
3254
if isinstance(value[k], bytes):
3255
value[k] = value[k].decode("utf-8")
3256
if not value.has_key("key_id"):
3257
value["key_id"] = ""
3258
elif not value.has_key("fingerprint"):
3259
value["fingerprint"] = ""
3260
# old_client_settings
3261
# .keys()
3262
old_client_settings = {
3263
(key.decode("utf-8")
3264
if isinstance(key, bytes)
3265
else key): value
3266
for key, value in
3267
bytes_old_client_settings.items()}
3268
del bytes_old_client_settings
3269
# .host
3270
for value in old_client_settings.values():
3271
if isinstance(value["host"], bytes):
3272
value["host"] = (value["host"]
3273
.decode("utf-8"))
2140
clients_data, old_client_settings = pickle.load(stored_state)
3274
2141
os.remove(stored_state_path)
3275
2142
except IOError as e:
3276
if e.errno == errno.ENOENT:
3277
logger.warning("Could not load persistent state:"
3278
" {}".format(os.strerror(e.errno)))
3279
else:
3280
logger.critical("Could not load persistent state:",
3281
exc_info=e)
2143
logger.warning("Could not load persistant state: {0}".format(e))
2144
if e.errno != errno.ENOENT:
3282
2145
raise
3283
except EOFError as e:
3284
logger.warning("Could not load persistent state: "
3285
"EOFError:",
3286
exc_info=e)
3287
3288
with PGPEngine() as pgp:
3289
for client_name, client in clients_data.items():
3290
# Skip removed clients
3291
if client_name not in client_settings:
3292
continue
3293
3294
# Decide which value to use after restoring saved state.
3295
# We have three different values: Old config file,
3296
# new config file, and saved state.
3297
# New config value takes precedence if it differs from old
3298
# config value, otherwise use saved state.
3299
for name, value in client_settings[client_name].items():
3300
try:
3301
# For each value in new config, check if it
3302
# differs from the old config value (Except for
3303
# the "secret" attribute)
3304
if (name != "secret"
3305
and (value !=
3306
old_client_settings[client_name][name])):
3307
client[name] = value
3308
except KeyError:
3309
pass
3310
3311
# Clients who has passed its expire date can still be
3312
# enabled if its last checker was successful. A Client
3313
# whose checker succeeded before we stored its state is
3314
# assumed to have successfully run all checkers during
3315
# downtime.
3316
if client["enabled"]:
3317
if datetime.datetime.utcnow() >= client["expires"]:
3318
if not client["last_checked_ok"]:
3319
logger.warning(
3320
"disabling client {} - Client never "
3321
"performed a successful checker".format(
3322
client_name))
3323
client["enabled"] = False
3324
elif client["last_checker_status"] != 0:
3325
logger.warning(
3326
"disabling client {} - Client last"
3327
" checker failed with error code"
3328
" {}".format(
3329
client_name,
3330
client["last_checker_status"]))
3331
client["enabled"] = False
3332
else:
3333
client["expires"] = (
3334
datetime.datetime.utcnow()
3335
+ client["timeout"])
3336
logger.debug("Last checker succeeded,"
3337
" keeping {} enabled".format(
3338
client_name))
2146
2147
for client in clients_data:
2148
client_name = client["name"]
2149
2150
# Decide which value to use after restoring saved state.
2151
# We have three different values: Old config file,
2152
# new config file, and saved state.
2153
# New config value takes precedence if it differs from old
2154
# config value, otherwise use saved state.
2155
for name, value in client_settings[client_name].items():
3339
2156
try:
3340
client["secret"] = pgp.decrypt(
3341
client["encrypted_secret"],
3342
client_settings[client_name]["secret"])
3343
except PGPError:
3344
# If decryption fails, we use secret from new settings
3345
logger.debug("Failed to decrypt {} old secret".format(
3346
client_name))
3347
client["secret"] = (client_settings[client_name]
3348
["secret"])
3349
3350
# Add/remove clients based on new changes made to config
3351
for client_name in (set(old_client_settings)
3352
- set(client_settings)):
3353
del clients_data[client_name]
3354
for client_name in (set(client_settings)
3355
- set(old_client_settings)):
3356
clients_data[client_name] = client_settings[client_name]
3357
3358
# Create all client objects
3359
for client_name, client in clients_data.items():
3360
tcp_server.clients[client_name] = client_class(
3361
name=client_name,
3362
settings=client,
3363
server_settings=server_settings)
2157
# For each value in new config, check if it differs
2158
# from the old config value (Except for the "secret"
2159
# attribute)
2160
if name != "secret" and value != old_client_settings[client_name][name]:
2161
setattr(client, name, value)
2162
except KeyError:
2163
pass
2164
2165
# Clients who has passed its expire date, can still be enabled if its
2166
# last checker was sucessful. Clients who checkers failed before we
2167
# stored it state is asumed to had failed checker during downtime.
2168
if client["enabled"] and client["last_checked_ok"]:
2169
if ((datetime.datetime.utcnow() - client["last_checked_ok"])
2170
> client["interval"]):
2171
if client["last_checker_status"] != 0:
2172
client["enabled"] = False
2173
else:
2174
client["expires"] = datetime.datetime.utcnow() + client["timeout"]
2175
2176
client["changedstate"] = (multiprocessing_manager
2177
.Condition(multiprocessing_manager
2178
.Lock()))
2179
if use_dbus:
2180
new_client = ClientDBusTransitional.__new__(ClientDBusTransitional)
2181
tcp_server.clients[client_name] = new_client
2182
new_client.bus = bus
2183
for name, value in client.iteritems():
2184
setattr(new_client, name, value)
2185
client_object_name = unicode(client_name).translate(
2186
{ord("."): ord("_"),
2187
ord("-"): ord("_")})
2188
new_client.dbus_object_path = (dbus.ObjectPath
2189
("/clients/" + client_object_name))
2190
DBusObjectWithProperties.__init__(new_client,
2191
new_client.bus,
2192
new_client.dbus_object_path)
2193
else:
2194
tcp_server.clients[client_name] = Client.__new__(Client)
2195
for name, value in client.iteritems():
2196
setattr(tcp_server.clients[client_name], name, value)
2197
2198
tcp_server.clients[client_name].decrypt_secret(
2199
client_settings[client_name]["secret"])
2200
2201
# Create/remove clients based on new changes made to config
2202
for clientname in set(old_client_settings) - set(client_settings):
2203
del tcp_server.clients[clientname]
2204
for clientname in set(client_settings) - set(old_client_settings):
2205
tcp_server.clients[clientname] = (client_class(name = clientname,
2206
config =
2207
client_settings
2208
[clientname]))
2209
3364
2210
3365
2211
if not tcp_server.clients:
3366
2212
logger.warning("No clients defined")
3367
3368
if not foreground:
3369
if pidfile is not None:
3370
pid = os.getpid()
3371
try:
3372
with pidfile:
3373
print(pid, file=pidfile)
3374
except IOError:
3375
logger.error("Could not write to file %r with PID %d",
3376
pidfilename, pid)
3377
del pidfile
2213
2214
if not debug:
2215
try:
2216
with pidfile:
2217
pid = os.getpid()
2218
pidfile.write(str(pid) + "\n".encode("utf-8"))
2219
del pidfile
2220
except IOError:
2221
logger.error("Could not write to file %r with PID %d",
2222
pidfilename, pid)
2223
except NameError:
2224
# "pidfile" was never created
2225
pass
3378
2226
del pidfilename
3379
3380
for termsig in (signal.SIGHUP, signal.SIGTERM):
3381
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3382
lambda: main_loop.quit() and False)
3383
2227
2228
signal.signal(signal.SIGINT, signal.SIG_IGN)
2229
2230
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2231
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2232
3384
2233
if use_dbus:
3385
3386
@alternate_dbus_interfaces(
3387
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3388
class MandosDBusService(DBusObjectWithObjectManager):
2234
class MandosDBusService(dbus.service.Object):
3389
2235
"""A D-Bus proxy object"""
3390
3391
2236
def __init__(self):
3392
2237
dbus.service.Object.__init__(self, bus, "/")
3393
3394
2238
_interface = "se.recompile.Mandos"
3395
2239
3396
2240
@dbus.service.signal(_interface, signature="o")
3397
2241
def ClientAdded(self, objpath):
3398
2242
"D-Bus signal"
3399
2243
pass
3400
2244
3401
2245
@dbus.service.signal(_interface, signature="ss")
3402
def ClientNotFound(self, key_id, address):
2246
def ClientNotFound(self, fingerprint, address):
3403
2247
"D-Bus signal"
3404
2248
pass
3405
3406
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3407
"true"})
2249
3408
2250
@dbus.service.signal(_interface, signature="os")
3409
2251
def ClientRemoved(self, objpath, name):
3410
2252
"D-Bus signal"
3411
2253
pass
3412
3413
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3414
"true"})
2254
3415
2255
@dbus.service.method(_interface, out_signature="ao")
3416
2256
def GetAllClients(self):
3417
2257
"D-Bus method"
3418
return dbus.Array(c.dbus_object_path for c in
3419
tcp_server.clients.values())
3420
3421
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3422
"true"})
2258
return dbus.Array(c.dbus_object_path
2259
for c in
2260
tcp_server.clients.itervalues())
2261
3423
2262
@dbus.service.method(_interface,
3424
2263
out_signature="a{oa{sv}}")
3425
2264
def GetAllClientsWithProperties(self):
3426
2265
"D-Bus method"
3427
2266
return dbus.Dictionary(
3428
{c.dbus_object_path: c.GetAll(
3429
"se.recompile.Mandos.Client")
3430
for c in tcp_server.clients.values()},
2267
((c.dbus_object_path, c.GetAll(""))
2268
for c in tcp_server.clients.itervalues()),
3431
2269
signature="oa{sv}")
3432
2270
3433
2271
@dbus.service.method(_interface, in_signature="o")
3434
2272
def RemoveClient(self, object_path):
3435
2273
"D-Bus method"
3436
for c in tcp_server.clients.values():
2274
for c in tcp_server.clients.itervalues():
3437
2275
if c.dbus_object_path == object_path:
3438
2276
del tcp_server.clients[c.name]
3439
2277
c.remove_from_connection()
3440
# Don't signal the disabling
2278
# Don't signal anything except ClientRemoved
3441
2279
c.disable(quiet=True)
3442
# Emit D-Bus signal for removal
3443
self.client_removed_signal(c)
2280
# Emit D-Bus signal
2281
self.ClientRemoved(object_path, c.name)
3444
2282
return
3445
2283
raise KeyError(object_path)
3446
2284
3447
2285
del _interface
3448
3449
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3450
out_signature="a{oa{sa{sv}}}")
3451
def GetManagedObjects(self):
3452
"""D-Bus method"""
3453
return dbus.Dictionary(
3454
{client.dbus_object_path:
3455
dbus.Dictionary(
3456
{interface: client.GetAll(interface)
3457
for interface in
3458
client._get_all_interface_names()})
3459
for client in tcp_server.clients.values()})
3460
3461
def client_added_signal(self, client):
3462
"""Send the new standard signal and the old signal"""
3463
if use_dbus:
3464
# New standard signal
3465
self.InterfacesAdded(
3466
client.dbus_object_path,
3467
dbus.Dictionary(
3468
{interface: client.GetAll(interface)
3469
for interface in
3470
client._get_all_interface_names()}))
3471
# Old signal
3472
self.ClientAdded(client.dbus_object_path)
3473
3474
def client_removed_signal(self, client):
3475
"""Send the new standard signal and the old signal"""
3476
if use_dbus:
3477
# New standard signal
3478
self.InterfacesRemoved(
3479
client.dbus_object_path,
3480
client._get_all_interface_names())
3481
# Old signal
3482
self.ClientRemoved(client.dbus_object_path,
3483
client.name)
3484
3485
mandos_dbus_service = MandosDBusService()
3486
3487
# Save modules to variables to exempt the modules from being
3488
# unloaded before the function registered with atexit() is run.
3489
mp = multiprocessing
3490
wn = wnull
3491
2286
2287
class MandosDBusServiceTransitional(MandosDBusService):
2288
__metaclass__ = AlternateDBusNamesMetaclass
2289
mandos_dbus_service = MandosDBusServiceTransitional()
2290
3492
2291
def cleanup():
3493
2292
"Cleanup function; run on exit"
3494
if zeroconf:
3495
service.cleanup()
3496
3497
mp.active_children()
3498
wn.close()
2293
service.cleanup()
2294
2295
multiprocessing.active_children()
3499
2296
if not (tcp_server.clients or client_settings):
3500
2297
return
3501
2298
3502
# Store client before exiting. Secrets are encrypted with key
3503
# based on what config file has. If config file is
3504
# removed/edited, old secret will thus be unrecovable.
3505
clients = {}
3506
with PGPEngine() as pgp:
3507
for client in tcp_server.clients.values():
3508
key = client_settings[client.name]["secret"]
3509
client.encrypted_secret = pgp.encrypt(client.secret,
3510
key)
3511
client_dict = {}
3512
3513
# A list of attributes that can not be pickled
3514
# + secret.
3515
exclude = {"bus", "changedstate", "secret",
3516
"checker", "server_settings"}
3517
for name, typ in inspect.getmembers(dbus.service
3518
.Object):
3519
exclude.add(name)
3520
3521
client_dict["encrypted_secret"] = (client
3522
.encrypted_secret)
3523
for attr in client.client_structure:
3524
if attr not in exclude:
3525
client_dict[attr] = getattr(client, attr)
3526
3527
clients[client.name] = client_dict
3528
del client_settings[client.name]["secret"]
3529
2299
# Store client before exiting. Secrets are encrypted with key based
2300
# on what config file has. If config file is removed/edited, old
2301
# secret will thus be unrecovable.
2302
clients = []
2303
for client in tcp_server.clients.itervalues():
2304
client.encrypt_secret(client_settings[client.name]["secret"])
2305
2306
client_dict = {}
2307
2308
# A list of attributes that will not be stored when shuting down.
2309
exclude = set(("bus", "changedstate", "secret"))
2310
for name, typ in inspect.getmembers(dbus.service.Object):
2311
exclude.add(name)
2312
2313
client_dict["encrypted_secret"] = client.encrypted_secret
2314
for attr in client.client_structure:
2315
if attr not in exclude:
2316
client_dict[attr] = getattr(client, attr)
2317
2318
clients.append(client_dict)
2319
del client_settings[client.name]["secret"]
2320
3530
2321
try:
3531
with tempfile.NamedTemporaryFile(
3532
mode='wb',
3533
suffix=".pickle",
3534
prefix='clients-',
3535
dir=os.path.dirname(stored_state_path),
3536
delete=False) as stored_state:
3537
pickle.dump((clients, client_settings), stored_state,
3538
protocol=2)
3539
tempname = stored_state.name
3540
os.rename(tempname, stored_state_path)
3541
except (IOError, OSError) as e:
3542
if not debug:
3543
try:
3544
os.remove(tempname)
3545
except NameError:
3546
pass
3547
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3548
logger.warning("Could not save persistent state: {}"
3549
.format(os.strerror(e.errno)))
3550
else:
3551
logger.warning("Could not save persistent state:",
3552
exc_info=e)
2322
with os.fdopen(os.open(stored_state_path, os.O_CREAT|os.O_WRONLY|os.O_TRUNC, 0600), "wb") as stored_state:
2323
pickle.dump((clients, client_settings), stored_state)
2324
except IOError as e:
2325
logger.warning("Could not save persistant state: {0}".format(e))
2326
if e.errno != errno.ENOENT:
3553
2327
raise
3554
2328
3555
2329
# Delete all clients, and settings from config
3557
2331
name, client = tcp_server.clients.popitem()
3558
2332
if use_dbus:
3559
2333
client.remove_from_connection()
3560
# Don't signal the disabling
2334
# Don't signal anything except ClientRemoved
3561
2335
client.disable(quiet=True)
3562
# Emit D-Bus signal for removal
3563
2336
if use_dbus:
3564
mandos_dbus_service.client_removed_signal(client)
2337
# Emit D-Bus signal
2338
mandos_dbus_service.ClientRemoved(client
2339
.dbus_object_path,
2340
client.name)
3565
2341
client_settings.clear()
3566
2342
3567
2343
atexit.register(cleanup)
3568
3569
for client in tcp_server.clients.values():
2344
2345
for client in tcp_server.clients.itervalues():
3570
2346
if use_dbus:
3571
# Emit D-Bus signal for adding
3572
mandos_dbus_service.client_added_signal(client)
2347
# Emit D-Bus signal
2348
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3573
2349
# Need to initiate checking of clients
3574
2350
if client.enabled:
3575
2351
client.init_checker()
3576
2352
2353
3577
2354
tcp_server.enable()
3578
2355
tcp_server.server_activate()
3579
2356
3580
2357
# Find out what port we got
3581
if zeroconf:
3582
service.port = tcp_server.socket.getsockname()[1]
2358
service.port = tcp_server.socket.getsockname()[1]
3583
2359
if use_ipv6:
3584
2360
logger.info("Now listening on address %r, port %d,"
3585
" flowinfo %d, scope_id %d",
3586
*tcp_server.socket.getsockname())
2361
" flowinfo %d, scope_id %d"
2362
% tcp_server.socket.getsockname())
3587
2363
else: # IPv4
3588
logger.info("Now listening on address %r, port %d",
3589
*tcp_server.socket.getsockname())
3590
3591
# service.interface = tcp_server.socket.getsockname()[3]
3592
2364
logger.info("Now listening on address %r, port %d"
2365
% tcp_server.socket.getsockname())
2366
2367
#service.interface = tcp_server.socket.getsockname()[3]
2368
3593
2369
try:
3594
if zeroconf:
3595
# From the Avahi example code
3596
try:
3597
service.activate()
3598
except dbus.exceptions.DBusException as error:
3599
logger.critical("D-Bus Exception", exc_info=error)
3600
cleanup()
3601
sys.exit(1)
3602
# End of Avahi example code
3603
3604
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3605
lambda *args, **kwargs:
3606
(tcp_server.handle_request
3607
(*args[2:], **kwargs) or True))
3608
2370
# From the Avahi example code
2371
try:
2372
service.activate()
2373
except dbus.exceptions.DBusException as error:
2374
logger.critical("DBusException: %s", error)
2375
cleanup()
2376
sys.exit(1)
2377
# End of Avahi example code
2378
2379
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2380
lambda *args, **kwargs:
2381
(tcp_server.handle_request
2382
(*args[2:], **kwargs) or True))
2383
3609
2384
logger.debug("Starting main loop")
3610
2385
main_loop.run()
3611
2386
except AvahiError as error:
3612
logger.critical("Avahi Error", exc_info=error)
2387
logger.critical("AvahiError: %s", error)
3613
2388
cleanup()
3614
2389
sys.exit(1)
3615
2390
except KeyboardInterrupt:
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0