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- Committer: teddy at bsnet
- Date: 2011-11-12 18:14:55 UTC
- mto: (237.7.70 trunk)
- mto: This revision was merged to the branch mainline in revision 290.
- Revision ID: teddy@fukt.bsnet.se-20111112181455-8m6z4qrrib33bl2c
* plugins.d/mandos-client.c (SYNOPSIS, OPTIONS): Document
"--network-hook-dir"
option.
"--network-hook-dir"
option.
- files added:
- initramfs-tools-hook-conf
- files removed:
- bugs.xml
- debian/tests
- debian/upstream
- dracut-module
- network-hooks.d
- plugin-helpers
- files modified:
- .bzrignore
added
removed
mandos
1
1
#!/usr/bin/python
2
2
# -*- mode: python; coding: utf-8 -*-
3
#
3
#
4
4
# Mandos server - give out binary blobs to connecting clients.
5
#
5
#
6
6
# This program is partly derived from an example program for an Avahi
7
7
# service publisher, downloaded from
8
8
# <http://avahi.org/wiki/PythonPublishExample>. This includes the
9
9
# methods "add", "remove", "server_state_changed",
10
10
# "entry_group_state_changed", "cleanup", and "activate" in the
11
11
# "AvahiService" class, and some lines in "main".
12
#
12
#
13
13
# Everything else is
14
# Copyright © 2008-2019 Teddy Hogeborn
15
# Copyright © 2008-2019 Björn Påhlsson
16
#
17
# This file is part of Mandos.
18
#
19
# Mandos is free software: you can redistribute it and/or modify it
20
# under the terms of the GNU General Public License as published by
14
# Copyright © 2008-2011 Teddy Hogeborn
15
# Copyright © 2008-2011 Björn Påhlsson
16
#
17
# This program is free software: you can redistribute it and/or modify
18
# it under the terms of the GNU General Public License as published by
21
19
# the Free Software Foundation, either version 3 of the License, or
22
20
# (at your option) any later version.
23
21
#
24
# Mandos is distributed in the hope that it will be useful, but
25
# WITHOUT ANY WARRANTY; without even the implied warranty of
22
# This program is distributed in the hope that it will be useful,
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
26
24
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
27
25
# GNU General Public License for more details.
28
#
26
#
29
27
# You should have received a copy of the GNU General Public License
30
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
31
#
28
# along with this program. If not, see
29
# <http://www.gnu.org/licenses/>.
30
#
32
31
# Contact the authors at <mandos@recompile.se>.
33
#
32
#
34
33
35
34
from __future__ import (division, absolute_import, print_function,
36
35
unicode_literals)
37
36
38
try:
39
from future_builtins import *
40
except ImportError:
41
pass
42
43
try:
44
import SocketServer as socketserver
45
except ImportError:
46
import socketserver
37
import SocketServer as socketserver
47
38
import socket
48
39
import argparse
49
40
import datetime
50
41
import errno
51
try:
52
import ConfigParser as configparser
53
except ImportError:
54
import configparser
42
import gnutls.crypto
43
import gnutls.connection
44
import gnutls.errors
45
import gnutls.library.functions
46
import gnutls.library.constants
47
import gnutls.library.types
48
import ConfigParser as configparser
55
49
import sys
56
50
import re
57
51
import os
66
60
import struct
67
61
import fcntl
68
62
import functools
69
try:
70
import cPickle as pickle
71
except ImportError:
72
import pickle
63
import cPickle as pickle
73
64
import multiprocessing
74
65
import types
75
import binascii
76
import tempfile
77
import itertools
78
import collections
79
import codecs
66
import hashlib
80
67
81
68
import dbus
82
69
import dbus.service
83
import gi
84
from gi.repository import GLib
70
import gobject
71
import avahi
85
72
from dbus.mainloop.glib import DBusGMainLoop
86
73
import ctypes
87
74
import ctypes.util
88
75
import xml.dom.minidom
89
76
import inspect
90
91
if sys.version_info.major == 2:
92
__metaclass__ = type
93
94
# Try to find the value of SO_BINDTODEVICE:
77
import Crypto.Cipher.AES
78
95
79
try:
96
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
97
# newer, and it is also the most natural place for it:
98
80
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
99
81
except AttributeError:
100
82
try:
101
# This is where SO_BINDTODEVICE was up to and including Python
102
# 2.6, and also 3.2:
103
83
from IN import SO_BINDTODEVICE
104
84
except ImportError:
105
# In Python 2.7 it seems to have been removed entirely.
106
# Try running the C preprocessor:
107
try:
108
cc = subprocess.Popen(["cc", "--language=c", "-E",
109
"/dev/stdin"],
110
stdin=subprocess.PIPE,
111
stdout=subprocess.PIPE)
112
stdout = cc.communicate(
113
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
114
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
115
except (OSError, ValueError, IndexError):
116
# No value found
117
SO_BINDTODEVICE = None
118
119
if sys.version_info.major == 2:
120
str = unicode
121
122
if sys.version_info < (3, 2):
123
configparser.Configparser = configparser.SafeConfigParser
124
125
version = "1.8.7"
126
stored_state_file = "clients.pickle"
85
SO_BINDTODEVICE = None
86
87
88
version = "1.4.1"
127
89
128
90
logger = logging.getLogger()
129
syslogger = None
130
131
try:
132
if_nametoindex = ctypes.cdll.LoadLibrary(
133
ctypes.util.find_library("c")).if_nametoindex
134
except (OSError, AttributeError):
135
136
def if_nametoindex(interface):
137
"Get an interface index the hard way, i.e. using fcntl()"
138
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
139
with contextlib.closing(socket.socket()) as s:
140
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
141
struct.pack(b"16s16x", interface))
142
interface_index = struct.unpack("I", ifreq[16:20])[0]
143
return interface_index
144
145
146
def copy_function(func):
147
"""Make a copy of a function"""
148
if sys.version_info.major == 2:
149
return types.FunctionType(func.func_code,
150
func.func_globals,
151
func.func_name,
152
func.func_defaults,
153
func.func_closure)
154
else:
155
return types.FunctionType(func.__code__,
156
func.__globals__,
157
func.__name__,
158
func.__defaults__,
159
func.__closure__)
160
161
162
def initlogger(debug, level=logging.WARNING):
163
"""init logger and add loglevel"""
164
165
global syslogger
166
syslogger = (logging.handlers.SysLogHandler(
167
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
168
address="/dev/log"))
169
syslogger.setFormatter(logging.Formatter
170
('Mandos [%(process)d]: %(levelname)s:'
171
' %(message)s'))
172
logger.addHandler(syslogger)
173
174
if debug:
175
console = logging.StreamHandler()
176
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
177
' [%(process)d]:'
178
' %(levelname)s:'
179
' %(message)s'))
180
logger.addHandler(console)
181
logger.setLevel(level)
182
183
184
class PGPError(Exception):
185
"""Exception if encryption/decryption fails"""
186
pass
187
188
189
class PGPEngine:
190
"""A simple class for OpenPGP symmetric encryption & decryption"""
191
192
def __init__(self):
193
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
194
self.gpg = "gpg"
195
try:
196
output = subprocess.check_output(["gpgconf"])
197
for line in output.splitlines():
198
name, text, path = line.split(b":")
199
if name == "gpg":
200
self.gpg = path
201
break
202
except OSError as e:
203
if e.errno != errno.ENOENT:
204
raise
205
self.gnupgargs = ['--batch',
206
'--homedir', self.tempdir,
207
'--force-mdc',
208
'--quiet']
209
# Only GPG version 1 has the --no-use-agent option.
210
if self.gpg == "gpg" or self.gpg.endswith("/gpg"):
211
self.gnupgargs.append("--no-use-agent")
212
213
def __enter__(self):
214
return self
215
216
def __exit__(self, exc_type, exc_value, traceback):
217
self._cleanup()
218
return False
219
220
def __del__(self):
221
self._cleanup()
222
223
def _cleanup(self):
224
if self.tempdir is not None:
225
# Delete contents of tempdir
226
for root, dirs, files in os.walk(self.tempdir,
227
topdown=False):
228
for filename in files:
229
os.remove(os.path.join(root, filename))
230
for dirname in dirs:
231
os.rmdir(os.path.join(root, dirname))
232
# Remove tempdir
233
os.rmdir(self.tempdir)
234
self.tempdir = None
235
236
def password_encode(self, password):
237
# Passphrase can not be empty and can not contain newlines or
238
# NUL bytes. So we prefix it and hex encode it.
239
encoded = b"mandos" + binascii.hexlify(password)
240
if len(encoded) > 2048:
241
# GnuPG can't handle long passwords, so encode differently
242
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
243
.replace(b"\n", b"\\n")
244
.replace(b"\0", b"\\x00"))
245
return encoded
246
247
def encrypt(self, data, password):
248
passphrase = self.password_encode(password)
249
with tempfile.NamedTemporaryFile(
250
dir=self.tempdir) as passfile:
251
passfile.write(passphrase)
252
passfile.flush()
253
proc = subprocess.Popen([self.gpg, '--symmetric',
254
'--passphrase-file',
255
passfile.name]
256
+ self.gnupgargs,
257
stdin=subprocess.PIPE,
258
stdout=subprocess.PIPE,
259
stderr=subprocess.PIPE)
260
ciphertext, err = proc.communicate(input=data)
261
if proc.returncode != 0:
262
raise PGPError(err)
263
return ciphertext
264
265
def decrypt(self, data, password):
266
passphrase = self.password_encode(password)
267
with tempfile.NamedTemporaryFile(
268
dir=self.tempdir) as passfile:
269
passfile.write(passphrase)
270
passfile.flush()
271
proc = subprocess.Popen([self.gpg, '--decrypt',
272
'--passphrase-file',
273
passfile.name]
274
+ self.gnupgargs,
275
stdin=subprocess.PIPE,
276
stdout=subprocess.PIPE,
277
stderr=subprocess.PIPE)
278
decrypted_plaintext, err = proc.communicate(input=data)
279
if proc.returncode != 0:
280
raise PGPError(err)
281
return decrypted_plaintext
282
283
284
# Pretend that we have an Avahi module
285
class avahi:
286
"""This isn't so much a class as it is a module-like namespace."""
287
IF_UNSPEC = -1 # avahi-common/address.h
288
PROTO_UNSPEC = -1 # avahi-common/address.h
289
PROTO_INET = 0 # avahi-common/address.h
290
PROTO_INET6 = 1 # avahi-common/address.h
291
DBUS_NAME = "org.freedesktop.Avahi"
292
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
293
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
294
DBUS_PATH_SERVER = "/"
295
296
@staticmethod
297
def string_array_to_txt_array(t):
298
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
299
for s in t), signature="ay")
300
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
301
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
302
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
303
SERVER_INVALID = 0 # avahi-common/defs.h
304
SERVER_REGISTERING = 1 # avahi-common/defs.h
305
SERVER_RUNNING = 2 # avahi-common/defs.h
306
SERVER_COLLISION = 3 # avahi-common/defs.h
307
SERVER_FAILURE = 4 # avahi-common/defs.h
91
stored_state_path = "/var/lib/mandos/clients.pickle"
92
93
syslogger = (logging.handlers.SysLogHandler
94
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
95
address = str("/dev/log")))
96
syslogger.setFormatter(logging.Formatter
97
('Mandos [%(process)d]: %(levelname)s:'
98
' %(message)s'))
99
logger.addHandler(syslogger)
100
101
console = logging.StreamHandler()
102
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
103
' [%(process)d]:'
104
' %(levelname)s:'
105
' %(message)s'))
106
logger.addHandler(console)
308
107
309
108
310
109
class AvahiError(Exception):
311
110
def __init__(self, value, *args, **kwargs):
312
111
self.value = value
313
return super(AvahiError, self).__init__(value, *args,
314
**kwargs)
315
112
super(AvahiError, self).__init__(value, *args, **kwargs)
113
def __unicode__(self):
114
return unicode(repr(self.value))
316
115
317
116
class AvahiServiceError(AvahiError):
318
117
pass
319
118
320
321
119
class AvahiGroupError(AvahiError):
322
120
pass
323
121
324
122
325
class AvahiService:
123
class AvahiService(object):
326
124
"""An Avahi (Zeroconf) service.
327
125
328
126
Attributes:
329
127
interface: integer; avahi.IF_UNSPEC or an interface index.
330
128
Used to optionally bind to the specified interface.
331
129
name: string; Example: 'Mandos'
332
130
type: string; Example: '_mandos._tcp'.
333
See <https://www.iana.org/assignments/service-names-port-numbers>
131
See <http://www.dns-sd.org/ServiceTypes.html>
334
132
port: integer; what port to announce
335
133
TXT: list of strings; TXT record for the service
336
134
domain: string; Domain to publish on, default to .local if empty.
342
140
server: D-Bus Server
343
141
bus: dbus.SystemBus()
344
142
"""
345
346
def __init__(self,
347
interface=avahi.IF_UNSPEC,
348
name=None,
349
servicetype=None,
350
port=None,
351
TXT=None,
352
domain="",
353
host="",
354
max_renames=32768,
355
protocol=avahi.PROTO_UNSPEC,
356
bus=None):
143
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
144
servicetype = None, port = None, TXT = None,
145
domain = "", host = "", max_renames = 32768,
146
protocol = avahi.PROTO_UNSPEC, bus = None):
357
147
self.interface = interface
358
148
self.name = name
359
149
self.type = servicetype
368
158
self.server = None
369
159
self.bus = bus
370
160
self.entry_group_state_changed_match = None
371
372
def rename(self, remove=True):
161
def rename(self):
373
162
"""Derived from the Avahi example code"""
374
163
if self.rename_count >= self.max_renames:
375
164
logger.critical("No suitable Zeroconf service name found"
376
165
" after %i retries, exiting.",
377
166
self.rename_count)
378
167
raise AvahiServiceError("Too many renames")
379
self.name = str(
380
self.server.GetAlternativeServiceName(self.name))
381
self.rename_count += 1
168
self.name = unicode(self.server
169
.GetAlternativeServiceName(self.name))
382
170
logger.info("Changing Zeroconf service name to %r ...",
383
171
self.name)
384
if remove:
385
self.remove()
172
self.remove()
386
173
try:
387
174
self.add()
388
175
except dbus.exceptions.DBusException as error:
389
if (error.get_dbus_name()
390
== "org.freedesktop.Avahi.CollisionError"):
391
logger.info("Local Zeroconf service name collision.")
392
return self.rename(remove=False)
393
else:
394
logger.critical("D-Bus Exception", exc_info=error)
395
self.cleanup()
396
os._exit(1)
397
176
logger.critical("DBusException: %s", error)
177
self.cleanup()
178
os._exit(1)
179
self.rename_count += 1
398
180
def remove(self):
399
181
"""Derived from the Avahi example code"""
400
182
if self.entry_group_state_changed_match is not None:
402
184
self.entry_group_state_changed_match = None
403
185
if self.group is not None:
404
186
self.group.Reset()
405
406
187
def add(self):
407
188
"""Derived from the Avahi example code"""
408
189
self.remove()
425
206
dbus.UInt16(self.port),
426
207
avahi.string_array_to_txt_array(self.TXT))
427
208
self.group.Commit()
428
429
209
def entry_group_state_changed(self, state, error):
430
210
"""Derived from the Avahi example code"""
431
211
logger.debug("Avahi entry group state change: %i", state)
432
212
433
213
if state == avahi.ENTRY_GROUP_ESTABLISHED:
434
214
logger.debug("Zeroconf service established.")
435
215
elif state == avahi.ENTRY_GROUP_COLLISION:
437
217
self.rename()
438
218
elif state == avahi.ENTRY_GROUP_FAILURE:
439
219
logger.critical("Avahi: Error in group state changed %s",
440
str(error))
441
raise AvahiGroupError("State changed: {!s}".format(error))
442
220
unicode(error))
221
raise AvahiGroupError("State changed: %s"
222
% unicode(error))
443
223
def cleanup(self):
444
224
"""Derived from the Avahi example code"""
445
225
if self.group is not None:
446
226
try:
447
227
self.group.Free()
448
228
except (dbus.exceptions.UnknownMethodException,
449
dbus.exceptions.DBusException):
229
dbus.exceptions.DBusException) as e:
450
230
pass
451
231
self.group = None
452
232
self.remove()
453
454
233
def server_state_changed(self, state, error=None):
455
234
"""Derived from the Avahi example code"""
456
235
logger.debug("Avahi server state change: %i", state)
457
bad_states = {
458
avahi.SERVER_INVALID: "Zeroconf server invalid",
459
avahi.SERVER_REGISTERING: None,
460
avahi.SERVER_COLLISION: "Zeroconf server name collision",
461
avahi.SERVER_FAILURE: "Zeroconf server failure",
462
}
236
bad_states = { avahi.SERVER_INVALID:
237
"Zeroconf server invalid",
238
avahi.SERVER_REGISTERING: None,
239
avahi.SERVER_COLLISION:
240
"Zeroconf server name collision",
241
avahi.SERVER_FAILURE:
242
"Zeroconf server failure" }
463
243
if state in bad_states:
464
244
if bad_states[state] is not None:
465
245
if error is None:
468
248
logger.error(bad_states[state] + ": %r", error)
469
249
self.cleanup()
470
250
elif state == avahi.SERVER_RUNNING:
471
try:
472
self.add()
473
except dbus.exceptions.DBusException as error:
474
if (error.get_dbus_name()
475
== "org.freedesktop.Avahi.CollisionError"):
476
logger.info("Local Zeroconf service name"
477
" collision.")
478
return self.rename(remove=False)
479
else:
480
logger.critical("D-Bus Exception", exc_info=error)
481
self.cleanup()
482
os._exit(1)
251
self.add()
483
252
else:
484
253
if error is None:
485
254
logger.debug("Unknown state: %r", state)
486
255
else:
487
256
logger.debug("Unknown state: %r: %r", state, error)
488
489
257
def activate(self):
490
258
"""Derived from the Avahi example code"""
491
259
if self.server is None:
495
263
follow_name_owner_changes=True),
496
264
avahi.DBUS_INTERFACE_SERVER)
497
265
self.server.connect_to_signal("StateChanged",
498
self.server_state_changed)
266
self.server_state_changed)
499
267
self.server_state_changed(self.server.GetState())
500
268
501
502
269
class AvahiServiceToSyslog(AvahiService):
503
def rename(self, *args, **kwargs):
270
def rename(self):
504
271
"""Add the new name to the syslog messages"""
505
ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
506
syslogger.setFormatter(logging.Formatter(
507
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
508
.format(self.name)))
272
ret = AvahiService.rename(self)
273
syslogger.setFormatter(logging.Formatter
274
('Mandos (%s) [%%(process)d]:'
275
' %%(levelname)s: %%(message)s'
276
% self.name))
509
277
return ret
510
278
511
512
# Pretend that we have a GnuTLS module
513
class gnutls:
514
"""This isn't so much a class as it is a module-like namespace."""
515
516
library = ctypes.util.find_library("gnutls")
517
if library is None:
518
library = ctypes.util.find_library("gnutls-deb0")
519
_library = ctypes.cdll.LoadLibrary(library)
520
del library
521
522
# Unless otherwise indicated, the constants and types below are
523
# all from the gnutls/gnutls.h C header file.
524
525
# Constants
526
E_SUCCESS = 0
527
E_INTERRUPTED = -52
528
E_AGAIN = -28
529
CRT_OPENPGP = 2
530
CRT_RAWPK = 3
531
CLIENT = 2
532
SHUT_RDWR = 0
533
CRD_CERTIFICATE = 1
534
E_NO_CERTIFICATE_FOUND = -49
535
X509_FMT_DER = 0
536
NO_TICKETS = 1<<10
537
ENABLE_RAWPK = 1<<18
538
CTYPE_PEERS = 3
539
KEYID_USE_SHA256 = 1 # gnutls/x509.h
540
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
541
542
# Types
543
class session_int(ctypes.Structure):
544
_fields_ = []
545
session_t = ctypes.POINTER(session_int)
546
547
class certificate_credentials_st(ctypes.Structure):
548
_fields_ = []
549
certificate_credentials_t = ctypes.POINTER(
550
certificate_credentials_st)
551
certificate_type_t = ctypes.c_int
552
553
class datum_t(ctypes.Structure):
554
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
555
('size', ctypes.c_uint)]
556
557
class openpgp_crt_int(ctypes.Structure):
558
_fields_ = []
559
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
560
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
561
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
562
credentials_type_t = ctypes.c_int
563
transport_ptr_t = ctypes.c_void_p
564
close_request_t = ctypes.c_int
565
566
# Exceptions
567
class Error(Exception):
568
def __init__(self, message=None, code=None, args=()):
569
# Default usage is by a message string, but if a return
570
# code is passed, convert it to a string with
571
# gnutls.strerror()
572
self.code = code
573
if message is None and code is not None:
574
message = gnutls.strerror(code)
575
return super(gnutls.Error, self).__init__(
576
message, *args)
577
578
class CertificateSecurityError(Error):
579
pass
580
581
# Classes
582
class Credentials:
583
def __init__(self):
584
self._c_object = gnutls.certificate_credentials_t()
585
gnutls.certificate_allocate_credentials(
586
ctypes.byref(self._c_object))
587
self.type = gnutls.CRD_CERTIFICATE
588
589
def __del__(self):
590
gnutls.certificate_free_credentials(self._c_object)
591
592
class ClientSession:
593
def __init__(self, socket, credentials=None):
594
self._c_object = gnutls.session_t()
595
gnutls_flags = gnutls.CLIENT
596
if gnutls.check_version(b"3.5.6"):
597
gnutls_flags |= gnutls.NO_TICKETS
598
if gnutls.has_rawpk:
599
gnutls_flags |= gnutls.ENABLE_RAWPK
600
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
601
del gnutls_flags
602
gnutls.set_default_priority(self._c_object)
603
gnutls.transport_set_ptr(self._c_object, socket.fileno())
604
gnutls.handshake_set_private_extensions(self._c_object,
605
True)
606
self.socket = socket
607
if credentials is None:
608
credentials = gnutls.Credentials()
609
gnutls.credentials_set(self._c_object, credentials.type,
610
ctypes.cast(credentials._c_object,
611
ctypes.c_void_p))
612
self.credentials = credentials
613
614
def __del__(self):
615
gnutls.deinit(self._c_object)
616
617
def handshake(self):
618
return gnutls.handshake(self._c_object)
619
620
def send(self, data):
621
data = bytes(data)
622
data_len = len(data)
623
while data_len > 0:
624
data_len -= gnutls.record_send(self._c_object,
625
data[-data_len:],
626
data_len)
627
628
def bye(self):
629
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
630
631
# Error handling functions
632
def _error_code(result):
633
"""A function to raise exceptions on errors, suitable
634
for the 'restype' attribute on ctypes functions"""
635
if result >= 0:
636
return result
637
if result == gnutls.E_NO_CERTIFICATE_FOUND:
638
raise gnutls.CertificateSecurityError(code=result)
639
raise gnutls.Error(code=result)
640
641
def _retry_on_error(result, func, arguments):
642
"""A function to retry on some errors, suitable
643
for the 'errcheck' attribute on ctypes functions"""
644
while result < 0:
645
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
646
return _error_code(result)
647
result = func(*arguments)
648
return result
649
650
# Unless otherwise indicated, the function declarations below are
651
# all from the gnutls/gnutls.h C header file.
652
653
# Functions
654
priority_set_direct = _library.gnutls_priority_set_direct
655
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
656
ctypes.POINTER(ctypes.c_char_p)]
657
priority_set_direct.restype = _error_code
658
659
init = _library.gnutls_init
660
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
661
init.restype = _error_code
662
663
set_default_priority = _library.gnutls_set_default_priority
664
set_default_priority.argtypes = [session_t]
665
set_default_priority.restype = _error_code
666
667
record_send = _library.gnutls_record_send
668
record_send.argtypes = [session_t, ctypes.c_void_p,
669
ctypes.c_size_t]
670
record_send.restype = ctypes.c_ssize_t
671
record_send.errcheck = _retry_on_error
672
673
certificate_allocate_credentials = (
674
_library.gnutls_certificate_allocate_credentials)
675
certificate_allocate_credentials.argtypes = [
676
ctypes.POINTER(certificate_credentials_t)]
677
certificate_allocate_credentials.restype = _error_code
678
679
certificate_free_credentials = (
680
_library.gnutls_certificate_free_credentials)
681
certificate_free_credentials.argtypes = [
682
certificate_credentials_t]
683
certificate_free_credentials.restype = None
684
685
handshake_set_private_extensions = (
686
_library.gnutls_handshake_set_private_extensions)
687
handshake_set_private_extensions.argtypes = [session_t,
688
ctypes.c_int]
689
handshake_set_private_extensions.restype = None
690
691
credentials_set = _library.gnutls_credentials_set
692
credentials_set.argtypes = [session_t, credentials_type_t,
693
ctypes.c_void_p]
694
credentials_set.restype = _error_code
695
696
strerror = _library.gnutls_strerror
697
strerror.argtypes = [ctypes.c_int]
698
strerror.restype = ctypes.c_char_p
699
700
certificate_type_get = _library.gnutls_certificate_type_get
701
certificate_type_get.argtypes = [session_t]
702
certificate_type_get.restype = _error_code
703
704
certificate_get_peers = _library.gnutls_certificate_get_peers
705
certificate_get_peers.argtypes = [session_t,
706
ctypes.POINTER(ctypes.c_uint)]
707
certificate_get_peers.restype = ctypes.POINTER(datum_t)
708
709
global_set_log_level = _library.gnutls_global_set_log_level
710
global_set_log_level.argtypes = [ctypes.c_int]
711
global_set_log_level.restype = None
712
713
global_set_log_function = _library.gnutls_global_set_log_function
714
global_set_log_function.argtypes = [log_func]
715
global_set_log_function.restype = None
716
717
deinit = _library.gnutls_deinit
718
deinit.argtypes = [session_t]
719
deinit.restype = None
720
721
handshake = _library.gnutls_handshake
722
handshake.argtypes = [session_t]
723
handshake.restype = _error_code
724
handshake.errcheck = _retry_on_error
725
726
transport_set_ptr = _library.gnutls_transport_set_ptr
727
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
728
transport_set_ptr.restype = None
729
730
bye = _library.gnutls_bye
731
bye.argtypes = [session_t, close_request_t]
732
bye.restype = _error_code
733
bye.errcheck = _retry_on_error
734
735
check_version = _library.gnutls_check_version
736
check_version.argtypes = [ctypes.c_char_p]
737
check_version.restype = ctypes.c_char_p
738
739
_need_version = b"3.3.0"
740
if check_version(_need_version) is None:
741
raise self.Error("Needs GnuTLS {} or later"
742
.format(_need_version))
743
744
_tls_rawpk_version = b"3.6.6"
745
has_rawpk = bool(check_version(_tls_rawpk_version))
746
747
if has_rawpk:
748
# Types
749
class pubkey_st(ctypes.Structure):
750
_fields = []
751
pubkey_t = ctypes.POINTER(pubkey_st)
752
753
x509_crt_fmt_t = ctypes.c_int
754
755
# All the function declarations below are from gnutls/abstract.h
756
pubkey_init = _library.gnutls_pubkey_init
757
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
758
pubkey_init.restype = _error_code
759
760
pubkey_import = _library.gnutls_pubkey_import
761
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
762
x509_crt_fmt_t]
763
pubkey_import.restype = _error_code
764
765
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
766
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
767
ctypes.POINTER(ctypes.c_ubyte),
768
ctypes.POINTER(ctypes.c_size_t)]
769
pubkey_get_key_id.restype = _error_code
770
771
pubkey_deinit = _library.gnutls_pubkey_deinit
772
pubkey_deinit.argtypes = [pubkey_t]
773
pubkey_deinit.restype = None
774
else:
775
# All the function declarations below are from gnutls/openpgp.h
776
777
openpgp_crt_init = _library.gnutls_openpgp_crt_init
778
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
779
openpgp_crt_init.restype = _error_code
780
781
openpgp_crt_import = _library.gnutls_openpgp_crt_import
782
openpgp_crt_import.argtypes = [openpgp_crt_t,
783
ctypes.POINTER(datum_t),
784
openpgp_crt_fmt_t]
785
openpgp_crt_import.restype = _error_code
786
787
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
788
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
789
ctypes.POINTER(ctypes.c_uint)]
790
openpgp_crt_verify_self.restype = _error_code
791
792
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
793
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
794
openpgp_crt_deinit.restype = None
795
796
openpgp_crt_get_fingerprint = (
797
_library.gnutls_openpgp_crt_get_fingerprint)
798
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
799
ctypes.c_void_p,
800
ctypes.POINTER(
801
ctypes.c_size_t)]
802
openpgp_crt_get_fingerprint.restype = _error_code
803
804
if check_version(b"3.6.4"):
805
certificate_type_get2 = _library.gnutls_certificate_type_get2
806
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
807
certificate_type_get2.restype = _error_code
808
809
# Remove non-public functions
810
del _error_code, _retry_on_error
811
812
813
def call_pipe(connection, # : multiprocessing.Connection
814
func, *args, **kwargs):
815
"""This function is meant to be called by multiprocessing.Process
816
817
This function runs func(*args, **kwargs), and writes the resulting
818
return value on the provided multiprocessing.Connection.
819
"""
820
connection.send(func(*args, **kwargs))
821
connection.close()
822
823
824
class Client:
279
def _timedelta_to_milliseconds(td):
280
"Convert a datetime.timedelta() to milliseconds"
281
return ((td.days * 24 * 60 * 60 * 1000)
282
+ (td.seconds * 1000)
283
+ (td.microseconds // 1000))
284
285
class Client(object):
825
286
"""A representation of a client host served by this server.
826
287
827
288
Attributes:
828
approved: bool(); 'None' if not yet approved/disapproved
289
_approved: bool(); 'None' if not yet approved/disapproved
829
290
approval_delay: datetime.timedelta(); Time to wait for approval
830
291
approval_duration: datetime.timedelta(); Duration of one approval
831
checker: multiprocessing.Process(); a running checker process used
832
to see if the client lives. 'None' if no process is
833
running.
834
checker_callback_tag: a GLib event source tag, or None
292
checker: subprocess.Popen(); a running checker process used
293
to see if the client lives.
294
'None' if no process is running.
295
checker_callback_tag: a gobject event source tag, or None
835
296
checker_command: string; External command which is run to check
836
297
if client lives. %() expansions are done at
837
298
runtime with vars(self) as dict, so that for
838
299
instance %(name)s can be used in the command.
839
checker_initiator_tag: a GLib event source tag, or None
300
checker_initiator_tag: a gobject event source tag, or None
840
301
created: datetime.datetime(); (UTC) object creation
841
302
client_structure: Object describing what attributes a client has
842
303
and is used for storing the client at exit
843
304
current_checker_command: string; current running checker_command
844
disable_initiator_tag: a GLib event source tag, or None
305
disable_initiator_tag: a gobject event source tag, or None
845
306
enabled: bool()
846
307
fingerprint: string (40 or 32 hexadecimal digits); used to
847
uniquely identify an OpenPGP client
848
key_id: string (64 hexadecimal digits); used to uniquely identify
849
a client using raw public keys
308
uniquely identify the client
850
309
host: string; available for use by the checker command
851
310
interval: datetime.timedelta(); How often to start a new checker
852
311
last_approval_request: datetime.datetime(); (UTC) or None
853
312
last_checked_ok: datetime.datetime(); (UTC) or None
854
313
last_checker_status: integer between 0 and 255 reflecting exit
855
status of last checker. -1 reflects crashed
856
checker, -2 means no checker completed yet.
857
last_checker_signal: The signal which killed the last checker, if
858
last_checker_status is -1
859
last_enabled: datetime.datetime(); (UTC) or None
314
status of last checker. -1 reflect crashed
315
checker, or None.
316
last_enabled: datetime.datetime(); (UTC)
860
317
name: string; from the config file, used in log messages and
861
318
D-Bus identifiers
862
319
secret: bytestring; sent verbatim (over TLS) to client
863
320
timeout: datetime.timedelta(); How long from last_checked_ok
864
321
until this client is disabled
865
extended_timeout: extra long timeout when secret has been sent
322
extended_timeout: extra long timeout when password has been sent
866
323
runtime_expansions: Allowed attributes for runtime expansion.
867
324
expires: datetime.datetime(); time (UTC) when a client will be
868
325
disabled, or None
869
server_settings: The server_settings dict from main()
870
326
"""
871
327
872
328
runtime_expansions = ("approval_delay", "approval_duration",
873
"created", "enabled", "expires", "key_id",
874
"fingerprint", "host", "interval",
875
"last_approval_request", "last_checked_ok",
329
"created", "enabled", "fingerprint",
330
"host", "interval", "last_checked_ok",
876
331
"last_enabled", "name", "timeout")
877
client_defaults = {
878
"timeout": "PT5M",
879
"extended_timeout": "PT15M",
880
"interval": "PT2M",
881
"checker": "fping -q -- %%(host)s",
882
"host": "",
883
"approval_delay": "PT0S",
884
"approval_duration": "PT1S",
885
"approved_by_default": "True",
886
"enabled": "True",
887
}
888
889
@staticmethod
890
def config_parser(config):
891
"""Construct a new dict of client settings of this form:
892
{ client_name: {setting_name: value, ...}, ...}
893
with exceptions for any special settings as defined above.
894
NOTE: Must be a pure function. Must return the same result
895
value given the same arguments.
896
"""
897
settings = {}
898
for client_name in config.sections():
899
section = dict(config.items(client_name))
900
client = settings[client_name] = {}
901
902
client["host"] = section["host"]
903
# Reformat values from string types to Python types
904
client["approved_by_default"] = config.getboolean(
905
client_name, "approved_by_default")
906
client["enabled"] = config.getboolean(client_name,
907
"enabled")
908
909
# Uppercase and remove spaces from key_id and fingerprint
910
# for later comparison purposes with return value from the
911
# key_id() and fingerprint() functions
912
client["key_id"] = (section.get("key_id", "").upper()
913
.replace(" ", ""))
914
client["fingerprint"] = (section["fingerprint"].upper()
915
.replace(" ", ""))
916
if "secret" in section:
917
client["secret"] = codecs.decode(section["secret"]
918
.encode("utf-8"),
919
"base64")
920
elif "secfile" in section:
921
with open(os.path.expanduser(os.path.expandvars
922
(section["secfile"])),
923
"rb") as secfile:
924
client["secret"] = secfile.read()
925
else:
926
raise TypeError("No secret or secfile for section {}"
927
.format(section))
928
client["timeout"] = string_to_delta(section["timeout"])
929
client["extended_timeout"] = string_to_delta(
930
section["extended_timeout"])
931
client["interval"] = string_to_delta(section["interval"])
932
client["approval_delay"] = string_to_delta(
933
section["approval_delay"])
934
client["approval_duration"] = string_to_delta(
935
section["approval_duration"])
936
client["checker_command"] = section["checker"]
937
client["last_approval_request"] = None
938
client["last_checked_ok"] = None
939
client["last_checker_status"] = -2
940
941
return settings
942
943
def __init__(self, settings, name=None, server_settings=None):
332
333
def timeout_milliseconds(self):
334
"Return the 'timeout' attribute in milliseconds"
335
return _timedelta_to_milliseconds(self.timeout)
336
337
def extended_timeout_milliseconds(self):
338
"Return the 'extended_timeout' attribute in milliseconds"
339
return _timedelta_to_milliseconds(self.extended_timeout)
340
341
def interval_milliseconds(self):
342
"Return the 'interval' attribute in milliseconds"
343
return _timedelta_to_milliseconds(self.interval)
344
345
def approval_delay_milliseconds(self):
346
return _timedelta_to_milliseconds(self.approval_delay)
347
348
def __init__(self, name = None, config=None):
349
"""Note: the 'checker' key in 'config' sets the
350
'checker_command' attribute and *not* the 'checker'
351
attribute."""
944
352
self.name = name
945
if server_settings is None:
946
server_settings = {}
947
self.server_settings = server_settings
948
# adding all client settings
949
for setting, value in settings.items():
950
setattr(self, setting, value)
951
952
if self.enabled:
953
if not hasattr(self, "last_enabled"):
954
self.last_enabled = datetime.datetime.utcnow()
955
if not hasattr(self, "expires"):
956
self.expires = (datetime.datetime.utcnow()
957
+ self.timeout)
958
else:
959
self.last_enabled = None
960
self.expires = None
961
353
if config is None:
354
config = {}
962
355
logger.debug("Creating client %r", self.name)
963
logger.debug(" Key ID: %s", self.key_id)
356
# Uppercase and remove spaces from fingerprint for later
357
# comparison purposes with return value from the fingerprint()
358
# function
359
self.fingerprint = (config["fingerprint"].upper()
360
.replace(" ", ""))
964
361
logger.debug(" Fingerprint: %s", self.fingerprint)
965
self.created = settings.get("created",
966
datetime.datetime.utcnow())
967
968
# attributes specific for this server instance
362
if "secret" in config:
363
self.secret = config["secret"].decode("base64")
364
elif "secfile" in config:
365
with open(os.path.expanduser(os.path.expandvars
366
(config["secfile"])),
367
"rb") as secfile:
368
self.secret = secfile.read()
369
else:
370
raise TypeError("No secret or secfile for client %s"
371
% self.name)
372
self.host = config.get("host", "")
373
self.created = datetime.datetime.utcnow()
374
self.enabled = True
375
self.last_approval_request = None
376
self.last_enabled = datetime.datetime.utcnow()
377
self.last_checked_ok = None
378
self.last_checker_status = None
379
self.timeout = string_to_delta(config["timeout"])
380
self.extended_timeout = string_to_delta(config
381
["extended_timeout"])
382
self.interval = string_to_delta(config["interval"])
969
383
self.checker = None
970
384
self.checker_initiator_tag = None
971
385
self.disable_initiator_tag = None
386
self.expires = datetime.datetime.utcnow() + self.timeout
972
387
self.checker_callback_tag = None
388
self.checker_command = config["checker"]
973
389
self.current_checker_command = None
974
self.approved = None
390
self._approved = None
391
self.approved_by_default = config.get("approved_by_default",
392
True)
975
393
self.approvals_pending = 0
976
self.changedstate = multiprocessing_manager.Condition(
977
multiprocessing_manager.Lock())
978
self.client_structure = [attr
979
for attr in self.__dict__.keys()
394
self.approval_delay = string_to_delta(
395
config["approval_delay"])
396
self.approval_duration = string_to_delta(
397
config["approval_duration"])
398
self.changedstate = (multiprocessing_manager
399
.Condition(multiprocessing_manager
400
.Lock()))
401
self.client_structure = [attr for attr
402
in self.__dict__.iterkeys()
980
403
if not attr.startswith("_")]
981
404
self.client_structure.append("client_structure")
982
405
983
for name, t in inspect.getmembers(
984
type(self), lambda obj: isinstance(obj, property)):
406
407
for name, t in inspect.getmembers(type(self),
408
lambda obj:
409
isinstance(obj,
410
property)):
985
411
if not name.startswith("_"):
986
412
self.client_structure.append(name)
987
413
988
414
# Send notice to process children that client state has changed
989
415
def send_changedstate(self):
990
416
with self.changedstate:
991
417
self.changedstate.notify_all()
992
418
993
419
def enable(self):
994
420
"""Start this client's checker and timeout hooks"""
995
421
if getattr(self, "enabled", False):
996
422
# Already enabled
997
423
return
424
self.send_changedstate()
998
425
self.expires = datetime.datetime.utcnow() + self.timeout
999
426
self.enabled = True
1000
427
self.last_enabled = datetime.datetime.utcnow()
1001
428
self.init_checker()
1002
self.send_changedstate()
1003
429
1004
430
def disable(self, quiet=True):
1005
431
"""Disable this client."""
1006
432
if not getattr(self, "enabled", False):
1007
433
return False
1008
434
if not quiet:
435
self.send_changedstate()
436
if not quiet:
1009
437
logger.info("Disabling client %s", self.name)
1010
if getattr(self, "disable_initiator_tag", None) is not None:
1011
GLib.source_remove(self.disable_initiator_tag)
438
if getattr(self, "disable_initiator_tag", False):
439
gobject.source_remove(self.disable_initiator_tag)
1012
440
self.disable_initiator_tag = None
1013
441
self.expires = None
1014
if getattr(self, "checker_initiator_tag", None) is not None:
1015
GLib.source_remove(self.checker_initiator_tag)
442
if getattr(self, "checker_initiator_tag", False):
443
gobject.source_remove(self.checker_initiator_tag)
1016
444
self.checker_initiator_tag = None
1017
445
self.stop_checker()
1018
446
self.enabled = False
1019
if not quiet:
1020
self.send_changedstate()
1021
# Do not run this again if called by a GLib.timeout_add
447
# Do not run this again if called by a gobject.timeout_add
1022
448
return False
1023
449
1024
450
def __del__(self):
1025
451
self.disable()
1026
452
1027
453
def init_checker(self):
1028
454
# Schedule a new checker to be started an 'interval' from now,
1029
455
# and every interval from then on.
1030
if self.checker_initiator_tag is not None:
1031
GLib.source_remove(self.checker_initiator_tag)
1032
self.checker_initiator_tag = GLib.timeout_add(
1033
int(self.interval.total_seconds() * 1000),
1034
self.start_checker)
456
self.checker_initiator_tag = (gobject.timeout_add
457
(self.interval_milliseconds(),
458
self.start_checker))
1035
459
# Schedule a disable() when 'timeout' has passed
1036
if self.disable_initiator_tag is not None:
1037
GLib.source_remove(self.disable_initiator_tag)
1038
self.disable_initiator_tag = GLib.timeout_add(
1039
int(self.timeout.total_seconds() * 1000), self.disable)
460
self.disable_initiator_tag = (gobject.timeout_add
461
(self.timeout_milliseconds(),
462
self.disable))
1040
463
# Also start a new checker *right now*.
1041
464
self.start_checker()
1042
465
1043
def checker_callback(self, source, condition, connection,
1044
command):
466
467
def checker_callback(self, pid, condition, command):
1045
468
"""The checker has completed, so take appropriate actions."""
1046
# Read return code from connection (see call_pipe)
1047
returncode = connection.recv()
1048
connection.close()
1049
self.checker.join()
1050
469
self.checker_callback_tag = None
1051
470
self.checker = None
1052
1053
if returncode >= 0:
1054
self.last_checker_status = returncode
1055
self.last_checker_signal = None
471
if os.WIFEXITED(condition):
472
self.last_checker_status = os.WEXITSTATUS(condition)
1056
473
if self.last_checker_status == 0:
1057
474
logger.info("Checker for %(name)s succeeded",
1058
475
vars(self))
1059
476
self.checked_ok()
1060
477
else:
1061
logger.info("Checker for %(name)s failed", vars(self))
478
logger.info("Checker for %(name)s failed",
479
vars(self))
1062
480
else:
1063
481
self.last_checker_status = -1
1064
self.last_checker_signal = -returncode
1065
482
logger.warning("Checker for %(name)s crashed?",
1066
483
vars(self))
1067
return False
1068
1069
def checked_ok(self):
1070
"""Assert that the client has been seen, alive and well."""
1071
self.last_checked_ok = datetime.datetime.utcnow()
1072
self.last_checker_status = 0
1073
self.last_checker_signal = None
1074
self.bump_timeout()
1075
1076
def bump_timeout(self, timeout=None):
1077
"""Bump up the timeout for this client."""
484
485
def checked_ok(self, timeout=None):
486
"""Bump up the timeout for this client.
487
488
This should only be called when the client has been seen,
489
alive and well.
490
"""
1078
491
if timeout is None:
1079
492
timeout = self.timeout
493
self.last_checked_ok = datetime.datetime.utcnow()
1080
494
if self.disable_initiator_tag is not None:
1081
GLib.source_remove(self.disable_initiator_tag)
1082
self.disable_initiator_tag = None
495
gobject.source_remove(self.disable_initiator_tag)
1083
496
if getattr(self, "enabled", False):
1084
self.disable_initiator_tag = GLib.timeout_add(
1085
int(timeout.total_seconds() * 1000), self.disable)
497
self.disable_initiator_tag = (gobject.timeout_add
498
(_timedelta_to_milliseconds
499
(timeout), self.disable))
1086
500
self.expires = datetime.datetime.utcnow() + timeout
1087
501
1088
502
def need_approval(self):
1089
503
self.last_approval_request = datetime.datetime.utcnow()
1090
504
1091
505
def start_checker(self):
1092
506
"""Start a new checker subprocess if one is not running.
1093
507
1094
508
If a checker already exists, leave it running and do
1095
509
nothing."""
1096
510
# The reason for not killing a running checker is that if we
1097
# did that, and if a checker (for some reason) started running
1098
# slowly and taking more than 'interval' time, then the client
1099
# would inevitably timeout, since no checker would get a
1100
# chance to run to completion. If we instead leave running
511
# did that, then if a checker (for some reason) started
512
# running slowly and taking more than 'interval' time, the
513
# client would inevitably timeout, since no checker would get
514
# a chance to run to completion. If we instead leave running
1101
515
# checkers alone, the checker would have to take more time
1102
516
# than 'timeout' for the client to be disabled, which is as it
1103
517
# should be.
1104
1105
if self.checker is not None and not self.checker.is_alive():
1106
logger.warning("Checker was not alive; joining")
1107
self.checker.join()
1108
self.checker = None
518
519
# If a checker exists, make sure it is not a zombie
520
try:
521
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
522
except (AttributeError, OSError) as error:
523
if (isinstance(error, OSError)
524
and error.errno != errno.ECHILD):
525
raise error
526
else:
527
if pid:
528
logger.warning("Checker was a zombie")
529
gobject.source_remove(self.checker_callback_tag)
530
self.checker_callback(pid, status,
531
self.current_checker_command)
1109
532
# Start a new checker if needed
1110
533
if self.checker is None:
1111
# Escape attributes for the shell
1112
escaped_attrs = {
1113
attr: re.escape(str(getattr(self, attr)))
1114
for attr in self.runtime_expansions}
1115
534
try:
1116
command = self.checker_command % escaped_attrs
1117
except TypeError as error:
1118
logger.error('Could not format string "%s"',
1119
self.checker_command,
1120
exc_info=error)
1121
return True # Try again later
535
# In case checker_command has exactly one % operator
536
command = self.checker_command % self.host
537
except TypeError:
538
# Escape attributes for the shell
539
escaped_attrs = dict(
540
(attr,
541
re.escape(unicode(str(getattr(self, attr, "")),
542
errors=
543
'replace')))
544
for attr in
545
self.runtime_expansions)
546
547
try:
548
command = self.checker_command % escaped_attrs
549
except TypeError as error:
550
logger.error('Could not format string "%s":'
551
' %s', self.checker_command, error)
552
return True # Try again later
1122
553
self.current_checker_command = command
1123
logger.info("Starting checker %r for %s", command,
1124
self.name)
1125
# We don't need to redirect stdout and stderr, since
1126
# in normal mode, that is already done by daemon(),
1127
# and in debug mode we don't want to. (Stdin is
1128
# always replaced by /dev/null.)
1129
# The exception is when not debugging but nevertheless
1130
# running in the foreground; use the previously
1131
# created wnull.
1132
popen_args = {"close_fds": True,
1133
"shell": True,
1134
"cwd": "/"}
1135
if (not self.server_settings["debug"]
1136
and self.server_settings["foreground"]):
1137
popen_args.update({"stdout": wnull,
1138
"stderr": wnull})
1139
pipe = multiprocessing.Pipe(duplex=False)
1140
self.checker = multiprocessing.Process(
1141
target=call_pipe,
1142
args=(pipe[1], subprocess.call, command),
1143
kwargs=popen_args)
1144
self.checker.start()
1145
self.checker_callback_tag = GLib.io_add_watch(
1146
pipe[0].fileno(), GLib.IO_IN,
1147
self.checker_callback, pipe[0], command)
1148
# Re-run this periodically if run by GLib.timeout_add
554
try:
555
logger.info("Starting checker %r for %s",
556
command, self.name)
557
# We don't need to redirect stdout and stderr, since
558
# in normal mode, that is already done by daemon(),
559
# and in debug mode we don't want to. (Stdin is
560
# always replaced by /dev/null.)
561
self.checker = subprocess.Popen(command,
562
close_fds=True,
563
shell=True, cwd="/")
564
self.checker_callback_tag = (gobject.child_watch_add
565
(self.checker.pid,
566
self.checker_callback,
567
data=command))
568
# The checker may have completed before the gobject
569
# watch was added. Check for this.
570
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
571
if pid:
572
gobject.source_remove(self.checker_callback_tag)
573
self.checker_callback(pid, status, command)
574
except OSError as error:
575
logger.error("Failed to start subprocess: %s",
576
error)
577
# Re-run this periodically if run by gobject.timeout_add
1149
578
return True
1150
579
1151
580
def stop_checker(self):
1152
581
"""Force the checker process, if any, to stop."""
1153
582
if self.checker_callback_tag:
1154
GLib.source_remove(self.checker_callback_tag)
583
gobject.source_remove(self.checker_callback_tag)
1155
584
self.checker_callback_tag = None
1156
585
if getattr(self, "checker", None) is None:
1157
586
return
1158
587
logger.debug("Stopping checker for %(name)s", vars(self))
1159
self.checker.terminate()
588
try:
589
os.kill(self.checker.pid, signal.SIGTERM)
590
#time.sleep(0.5)
591
#if self.checker.poll() is None:
592
# os.kill(self.checker.pid, signal.SIGKILL)
593
except OSError as error:
594
if error.errno != errno.ESRCH: # No such process
595
raise
1160
596
self.checker = None
1161
597
1162
1163
def dbus_service_property(dbus_interface,
1164
signature="v",
1165
access="readwrite",
1166
byte_arrays=False):
598
# Encrypts a client secret and stores it in a varible
599
# encrypted_secret
600
def encrypt_secret(self, key):
601
# Encryption-key need to be of a specific size, so we hash
602
# supplied key
603
hasheng = hashlib.sha256()
604
hasheng.update(key)
605
encryptionkey = hasheng.digest()
606
607
# Create validation hash so we know at decryption if it was
608
# sucessful
609
hasheng = hashlib.sha256()
610
hasheng.update(self.secret)
611
validationhash = hasheng.digest()
612
613
# Encrypt secret
614
iv = os.urandom(Crypto.Cipher.AES.block_size)
615
ciphereng = Crypto.Cipher.AES.new(encryptionkey,
616
Crypto.Cipher.AES.MODE_CFB, iv)
617
ciphertext = ciphereng.encrypt(validationhash+self.secret)
618
self.encrypted_secret = (ciphertext, iv)
619
620
# Decrypt a encrypted client secret
621
def decrypt_secret(self, key):
622
# Decryption-key need to be of a specific size, so we hash
623
# supplied key
624
hasheng = hashlib.sha256()
625
hasheng.update(key)
626
encryptionkey = hasheng.digest()
627
628
# Decrypt encrypted secret
629
ciphertext, iv = self.encrypted_secret
630
ciphereng = Crypto.Cipher.AES.new(encryptionkey,
631
Crypto.Cipher.AES.MODE_CFB, iv)
632
plain = ciphereng.decrypt(ciphertext)
633
634
# Validate decrypted secret to know if it was succesful
635
hasheng = hashlib.sha256()
636
validationhash = plain[:hasheng.digest_size]
637
secret = plain[hasheng.digest_size:]
638
hasheng.update(secret)
639
640
# If validation fails, we use key as new secret. Otherwise, we
641
# use the decrypted secret
642
if hasheng.digest() == validationhash:
643
self.secret = secret
644
else:
645
self.secret = key
646
del self.encrypted_secret
647
648
649
def dbus_service_property(dbus_interface, signature="v",
650
access="readwrite", byte_arrays=False):
1167
651
"""Decorators for marking methods of a DBusObjectWithProperties to
1168
652
become properties on the D-Bus.
1169
653
1170
654
The decorated method will be called with no arguments by "Get"
1171
655
and with one argument by "Set".
1172
656
1173
657
The parameters, where they are supported, are the same as
1174
658
dbus.service.method, except there is only "signature", since the
1175
659
type from Get() and the type sent to Set() is the same.
1178
662
# "Set" method, so we fail early here:
1179
663
if byte_arrays and signature != "ay":
1180
664
raise ValueError("Byte arrays not supported for non-'ay'"
1181
" signature {!r}".format(signature))
1182
665
" signature %r" % signature)
1183
666
def decorator(func):
1184
667
func._dbus_is_property = True
1185
668
func._dbus_interface = dbus_interface
1188
671
func._dbus_name = func.__name__
1189
672
if func._dbus_name.endswith("_dbus_property"):
1190
673
func._dbus_name = func._dbus_name[:-14]
1191
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
1192
return func
1193
1194
return decorator
1195
1196
1197
def dbus_interface_annotations(dbus_interface):
1198
"""Decorator for marking functions returning interface annotations
1199
1200
Usage:
1201
1202
@dbus_interface_annotations("org.example.Interface")
1203
def _foo(self): # Function name does not matter
1204
return {"org.freedesktop.DBus.Deprecated": "true",
1205
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1206
"false"}
1207
"""
1208
1209
def decorator(func):
1210
func._dbus_is_interface = True
1211
func._dbus_interface = dbus_interface
1212
func._dbus_name = dbus_interface
1213
return func
1214
1215
return decorator
1216
1217
1218
def dbus_annotations(annotations):
1219
"""Decorator to annotate D-Bus methods, signals or properties
1220
Usage:
1221
1222
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1223
"org.freedesktop.DBus.Property."
1224
"EmitsChangedSignal": "false"})
1225
@dbus_service_property("org.example.Interface", signature="b",
1226
access="r")
1227
def Property_dbus_property(self):
1228
return dbus.Boolean(False)
1229
1230
See also the DBusObjectWithAnnotations class.
1231
"""
1232
1233
def decorator(func):
1234
func._dbus_annotations = annotations
1235
return func
1236
674
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
675
return func
1237
676
return decorator
1238
677
1239
678
1240
679
class DBusPropertyException(dbus.exceptions.DBusException):
1241
680
"""A base class for D-Bus property-related exceptions
1242
681
"""
1243
pass
682
def __unicode__(self):
683
return unicode(str(self))
1244
684
1245
685
1246
686
class DBusPropertyAccessException(DBusPropertyException):
1255
695
pass
1256
696
1257
697
1258
class DBusObjectWithAnnotations(dbus.service.Object):
1259
"""A D-Bus object with annotations.
1260
1261
Classes inheriting from this can use the dbus_annotations
1262
decorator to add annotations to methods or signals.
1263
"""
1264
1265
@staticmethod
1266
def _is_dbus_thing(thing):
1267
"""Returns a function testing if an attribute is a D-Bus thing
1268
1269
If called like _is_dbus_thing("method") it returns a function
1270
suitable for use as predicate to inspect.getmembers().
1271
"""
1272
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1273
False)
1274
1275
def _get_all_dbus_things(self, thing):
1276
"""Returns a generator of (name, attribute) pairs
1277
"""
1278
return ((getattr(athing.__get__(self), "_dbus_name", name),
1279
athing.__get__(self))
1280
for cls in self.__class__.__mro__
1281
for name, athing in
1282
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1283
1284
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1285
out_signature="s",
1286
path_keyword='object_path',
1287
connection_keyword='connection')
1288
def Introspect(self, object_path, connection):
1289
"""Overloading of standard D-Bus method.
1290
1291
Inserts annotation tags on methods and signals.
1292
"""
1293
xmlstring = dbus.service.Object.Introspect(self, object_path,
1294
connection)
1295
try:
1296
document = xml.dom.minidom.parseString(xmlstring)
1297
1298
for if_tag in document.getElementsByTagName("interface"):
1299
# Add annotation tags
1300
for typ in ("method", "signal"):
1301
for tag in if_tag.getElementsByTagName(typ):
1302
annots = dict()
1303
for name, prop in (self.
1304
_get_all_dbus_things(typ)):
1305
if (name == tag.getAttribute("name")
1306
and prop._dbus_interface
1307
== if_tag.getAttribute("name")):
1308
annots.update(getattr(
1309
prop, "_dbus_annotations", {}))
1310
for name, value in annots.items():
1311
ann_tag = document.createElement(
1312
"annotation")
1313
ann_tag.setAttribute("name", name)
1314
ann_tag.setAttribute("value", value)
1315
tag.appendChild(ann_tag)
1316
# Add interface annotation tags
1317
for annotation, value in dict(
1318
itertools.chain.from_iterable(
1319
annotations().items()
1320
for name, annotations
1321
in self._get_all_dbus_things("interface")
1322
if name == if_tag.getAttribute("name")
1323
)).items():
1324
ann_tag = document.createElement("annotation")
1325
ann_tag.setAttribute("name", annotation)
1326
ann_tag.setAttribute("value", value)
1327
if_tag.appendChild(ann_tag)
1328
# Fix argument name for the Introspect method itself
1329
if (if_tag.getAttribute("name")
1330
== dbus.INTROSPECTABLE_IFACE):
1331
for cn in if_tag.getElementsByTagName("method"):
1332
if cn.getAttribute("name") == "Introspect":
1333
for arg in cn.getElementsByTagName("arg"):
1334
if (arg.getAttribute("direction")
1335
== "out"):
1336
arg.setAttribute("name",
1337
"xml_data")
1338
xmlstring = document.toxml("utf-8")
1339
document.unlink()
1340
except (AttributeError, xml.dom.DOMException,
1341
xml.parsers.expat.ExpatError) as error:
1342
logger.error("Failed to override Introspection method",
1343
exc_info=error)
1344
return xmlstring
1345
1346
1347
class DBusObjectWithProperties(DBusObjectWithAnnotations):
698
class DBusObjectWithProperties(dbus.service.Object):
1348
699
"""A D-Bus object with properties.
1349
700
1350
701
Classes inheriting from this can use the dbus_service_property
1351
702
decorator to expose methods as D-Bus properties. It exposes the
1352
703
standard Get(), Set(), and GetAll() methods on the D-Bus.
1353
704
"""
1354
705
706
@staticmethod
707
def _is_dbus_property(obj):
708
return getattr(obj, "_dbus_is_property", False)
709
710
def _get_all_dbus_properties(self):
711
"""Returns a generator of (name, attribute) pairs
712
"""
713
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
714
for cls in self.__class__.__mro__
715
for name, prop in
716
inspect.getmembers(cls, self._is_dbus_property))
717
1355
718
def _get_dbus_property(self, interface_name, property_name):
1356
719
"""Returns a bound method if one exists which is a D-Bus
1357
720
property with the specified name and interface.
1358
721
"""
1359
for cls in self.__class__.__mro__:
1360
for name, value in inspect.getmembers(
1361
cls, self._is_dbus_thing("property")):
722
for cls in self.__class__.__mro__:
723
for name, value in (inspect.getmembers
724
(cls, self._is_dbus_property)):
1362
725
if (value._dbus_name == property_name
1363
726
and value._dbus_interface == interface_name):
1364
727
return value.__get__(self)
1365
728
1366
729
# No such property
1367
raise DBusPropertyNotFound("{}:{}.{}".format(
1368
self.dbus_object_path, interface_name, property_name))
1369
1370
@classmethod
1371
def _get_all_interface_names(cls):
1372
"""Get a sequence of all interfaces supported by an object"""
1373
return (name for name in set(getattr(getattr(x, attr),
1374
"_dbus_interface", None)
1375
for x in (inspect.getmro(cls))
1376
for attr in dir(x))
1377
if name is not None)
1378
1379
@dbus.service.method(dbus.PROPERTIES_IFACE,
1380
in_signature="ss",
730
raise DBusPropertyNotFound(self.dbus_object_path + ":"
731
+ interface_name + "."
732
+ property_name)
733
734
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1381
735
out_signature="v")
1382
736
def Get(self, interface_name, property_name):
1383
737
"""Standard D-Bus property Get() method, see D-Bus standard.
1389
743
if not hasattr(value, "variant_level"):
1390
744
return value
1391
745
return type(value)(value, variant_level=value.variant_level+1)
1392
746
1393
747
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
1394
748
def Set(self, interface_name, property_name, value):
1395
749
"""Standard D-Bus property Set() method, see D-Bus standard.
1401
755
# The byte_arrays option is not supported yet on
1402
756
# signatures other than "ay".
1403
757
if prop._dbus_signature != "ay":
1404
raise ValueError("Byte arrays not supported for non-"
1405
"'ay' signature {!r}"
1406
.format(prop._dbus_signature))
1407
value = dbus.ByteArray(b''.join(chr(byte)
1408
for byte in value))
758
raise ValueError
759
value = dbus.ByteArray(''.join(unichr(byte)
760
for byte in value))
1409
761
prop(value)
1410
1411
@dbus.service.method(dbus.PROPERTIES_IFACE,
1412
in_signature="s",
762
763
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1413
764
out_signature="a{sv}")
1414
765
def GetAll(self, interface_name):
1415
766
"""Standard D-Bus property GetAll() method, see D-Bus
1416
767
standard.
1417
768
1418
769
Note: Will not include properties with access="write".
1419
770
"""
1420
properties = {}
1421
for name, prop in self._get_all_dbus_things("property"):
771
all = {}
772
for name, prop in self._get_all_dbus_properties():
1422
773
if (interface_name
1423
774
and interface_name != prop._dbus_interface):
1424
775
# Interface non-empty but did not match
1428
779
continue
1429
780
value = prop()
1430
781
if not hasattr(value, "variant_level"):
1431
properties[name] = value
782
all[name] = value
1432
783
continue
1433
properties[name] = type(value)(
1434
value, variant_level=value.variant_level + 1)
1435
return dbus.Dictionary(properties, signature="sv")
1436
1437
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1438
def PropertiesChanged(self, interface_name, changed_properties,
1439
invalidated_properties):
1440
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1441
standard.
1442
"""
1443
pass
1444
784
all[name] = type(value)(value, variant_level=
785
value.variant_level+1)
786
return dbus.Dictionary(all, signature="sv")
787
1445
788
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1446
789
out_signature="s",
1447
790
path_keyword='object_path',
1448
791
connection_keyword='connection')
1449
792
def Introspect(self, object_path, connection):
1450
"""Overloading of standard D-Bus method.
1451
1452
Inserts property tags and interface annotation tags.
793
"""Standard D-Bus method, overloaded to insert property tags.
1453
794
"""
1454
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1455
object_path,
1456
connection)
795
xmlstring = dbus.service.Object.Introspect(self, object_path,
796
connection)
1457
797
try:
1458
798
document = xml.dom.minidom.parseString(xmlstring)
1459
1460
799
def make_tag(document, name, prop):
1461
800
e = document.createElement("property")
1462
801
e.setAttribute("name", name)
1463
802
e.setAttribute("type", prop._dbus_signature)
1464
803
e.setAttribute("access", prop._dbus_access)
1465
804
return e
1466
1467
805
for if_tag in document.getElementsByTagName("interface"):
1468
# Add property tags
1469
806
for tag in (make_tag(document, name, prop)
1470
807
for name, prop
1471
in self._get_all_dbus_things("property")
808
in self._get_all_dbus_properties()
1472
809
if prop._dbus_interface
1473
810
== if_tag.getAttribute("name")):
1474
811
if_tag.appendChild(tag)
1475
# Add annotation tags for properties
1476
for tag in if_tag.getElementsByTagName("property"):
1477
annots = dict()
1478
for name, prop in self._get_all_dbus_things(
1479
"property"):
1480
if (name == tag.getAttribute("name")
1481
and prop._dbus_interface
1482
== if_tag.getAttribute("name")):
1483
annots.update(getattr(
1484
prop, "_dbus_annotations", {}))
1485
for name, value in annots.items():
1486
ann_tag = document.createElement(
1487
"annotation")
1488
ann_tag.setAttribute("name", name)
1489
ann_tag.setAttribute("value", value)
1490
tag.appendChild(ann_tag)
1491
812
# Add the names to the return values for the
1492
813
# "org.freedesktop.DBus.Properties" methods
1493
814
if (if_tag.getAttribute("name")
1508
829
except (AttributeError, xml.dom.DOMException,
1509
830
xml.parsers.expat.ExpatError) as error:
1510
831
logger.error("Failed to override Introspection method",
1511
exc_info=error)
1512
return xmlstring
1513
1514
1515
try:
1516
dbus.OBJECT_MANAGER_IFACE
1517
except AttributeError:
1518
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1519
1520
1521
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1522
"""A D-Bus object with an ObjectManager.
1523
1524
Classes inheriting from this exposes the standard
1525
GetManagedObjects call and the InterfacesAdded and
1526
InterfacesRemoved signals on the standard
1527
"org.freedesktop.DBus.ObjectManager" interface.
1528
1529
Note: No signals are sent automatically; they must be sent
1530
manually.
1531
"""
1532
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1533
out_signature="a{oa{sa{sv}}}")
1534
def GetManagedObjects(self):
1535
"""This function must be overridden"""
1536
raise NotImplementedError()
1537
1538
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1539
signature="oa{sa{sv}}")
1540
def InterfacesAdded(self, object_path, interfaces_and_properties):
1541
pass
1542
1543
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1544
def InterfacesRemoved(self, object_path, interfaces):
1545
pass
1546
1547
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1548
out_signature="s",
1549
path_keyword='object_path',
1550
connection_keyword='connection')
1551
def Introspect(self, object_path, connection):
1552
"""Overloading of standard D-Bus method.
1553
1554
Override return argument name of GetManagedObjects to be
1555
"objpath_interfaces_and_properties"
1556
"""
1557
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1558
object_path,
1559
connection)
1560
try:
1561
document = xml.dom.minidom.parseString(xmlstring)
1562
1563
for if_tag in document.getElementsByTagName("interface"):
1564
# Fix argument name for the GetManagedObjects method
1565
if (if_tag.getAttribute("name")
1566
== dbus.OBJECT_MANAGER_IFACE):
1567
for cn in if_tag.getElementsByTagName("method"):
1568
if (cn.getAttribute("name")
1569
== "GetManagedObjects"):
1570
for arg in cn.getElementsByTagName("arg"):
1571
if (arg.getAttribute("direction")
1572
== "out"):
1573
arg.setAttribute(
1574
"name",
1575
"objpath_interfaces"
1576
"_and_properties")
1577
xmlstring = document.toxml("utf-8")
1578
document.unlink()
1579
except (AttributeError, xml.dom.DOMException,
1580
xml.parsers.expat.ExpatError) as error:
1581
logger.error("Failed to override Introspection method",
1582
exc_info=error)
1583
return xmlstring
1584
1585
1586
def datetime_to_dbus(dt, variant_level=0):
832
error)
833
return xmlstring
834
835
836
def datetime_to_dbus (dt, variant_level=0):
1587
837
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1588
838
if dt is None:
1589
return dbus.String("", variant_level=variant_level)
1590
return dbus.String(dt.isoformat(), variant_level=variant_level)
1591
1592
1593
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1594
"""A class decorator; applied to a subclass of
1595
dbus.service.Object, it will add alternate D-Bus attributes with
1596
interface names according to the "alt_interface_names" mapping.
1597
Usage:
1598
1599
@alternate_dbus_interfaces({"org.example.Interface":
1600
"net.example.AlternateInterface"})
1601
class SampleDBusObject(dbus.service.Object):
1602
@dbus.service.method("org.example.Interface")
1603
def SampleDBusMethod():
1604
pass
1605
1606
The above "SampleDBusMethod" on "SampleDBusObject" will be
1607
reachable via two interfaces: "org.example.Interface" and
1608
"net.example.AlternateInterface", the latter of which will have
1609
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1610
"true", unless "deprecate" is passed with a False value.
1611
1612
This works for methods and signals, and also for D-Bus properties
1613
(from DBusObjectWithProperties) and interfaces (from the
1614
dbus_interface_annotations decorator).
839
return dbus.String("", variant_level = variant_level)
840
return dbus.String(dt.isoformat(),
841
variant_level=variant_level)
842
843
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
844
.__metaclass__):
845
"""Applied to an empty subclass of a D-Bus object, this metaclass
846
will add additional D-Bus attributes matching a certain pattern.
1615
847
"""
1616
1617
def wrapper(cls):
1618
for orig_interface_name, alt_interface_name in (
1619
alt_interface_names.items()):
1620
attr = {}
1621
interface_names = set()
1622
# Go though all attributes of the class
1623
for attrname, attribute in inspect.getmembers(cls):
848
def __new__(mcs, name, bases, attr):
849
# Go through all the base classes which could have D-Bus
850
# methods, signals, or properties in them
851
for base in (b for b in bases
852
if issubclass(b, dbus.service.Object)):
853
# Go though all attributes of the base class
854
for attrname, attribute in inspect.getmembers(base):
1624
855
# Ignore non-D-Bus attributes, and D-Bus attributes
1625
856
# with the wrong interface name
1626
857
if (not hasattr(attribute, "_dbus_interface")
1627
or not attribute._dbus_interface.startswith(
1628
orig_interface_name)):
858
or not attribute._dbus_interface
859
.startswith("se.recompile.Mandos")):
1629
860
continue
1630
861
# Create an alternate D-Bus interface name based on
1631
862
# the current name
1632
alt_interface = attribute._dbus_interface.replace(
1633
orig_interface_name, alt_interface_name)
1634
interface_names.add(alt_interface)
863
alt_interface = (attribute._dbus_interface
864
.replace("se.recompile.Mandos",
865
"se.bsnet.fukt.Mandos"))
1635
866
# Is this a D-Bus signal?
1636
867
if getattr(attribute, "_dbus_is_signal", False):
1637
# Extract the original non-method undecorated
1638
# function by black magic
1639
if sys.version_info.major == 2:
1640
nonmethod_func = (dict(
868
# Extract the original non-method function by
869
# black magic
870
nonmethod_func = (dict(
1641
871
zip(attribute.func_code.co_freevars,
1642
attribute.__closure__))
1643
["func"].cell_contents)
1644
else:
1645
nonmethod_func = (dict(
1646
zip(attribute.__code__.co_freevars,
1647
attribute.__closure__))
1648
["func"].cell_contents)
872
attribute.__closure__))["func"]
873
.cell_contents)
1649
874
# Create a new, but exactly alike, function
1650
875
# object, and decorate it to be a new D-Bus signal
1651
876
# with the alternate D-Bus interface name
1652
new_function = copy_function(nonmethod_func)
1653
new_function = (dbus.service.signal(
1654
alt_interface,
1655
attribute._dbus_signature)(new_function))
1656
# Copy annotations, if any
1657
try:
1658
new_function._dbus_annotations = dict(
1659
attribute._dbus_annotations)
1660
except AttributeError:
1661
pass
1662
877
new_function = (dbus.service.signal
878
(alt_interface,
879
attribute._dbus_signature)
880
(types.FunctionType(
881
nonmethod_func.func_code,
882
nonmethod_func.func_globals,
883
nonmethod_func.func_name,
884
nonmethod_func.func_defaults,
885
nonmethod_func.func_closure)))
1663
886
# Define a creator of a function to call both the
1664
# original and alternate functions, so both the
1665
# original and alternate signals gets sent when
1666
# the function is called
887
# old and new functions, so both the old and new
888
# signals gets sent when the function is called
1667
889
def fixscope(func1, func2):
1668
890
"""This function is a scope container to pass
1669
891
func1 and func2 to the "call_both" function
1670
892
outside of its arguments"""
1671
1672
@functools.wraps(func2)
1673
893
def call_both(*args, **kwargs):
1674
894
"""This function will emit two D-Bus
1675
895
signals by calling func1 and func2"""
1676
896
func1(*args, **kwargs)
1677
897
func2(*args, **kwargs)
1678
# Make wrapper function look like a D-Bus
1679
# signal
1680
for name, attr in inspect.getmembers(func2):
1681
if name.startswith("_dbus_"):
1682
setattr(call_both, name, attr)
1683
1684
898
return call_both
1685
899
# Create the "call_both" function and add it to
1686
900
# the class
1687
attr[attrname] = fixscope(attribute, new_function)
901
attr[attrname] = fixscope(attribute,
902
new_function)
1688
903
# Is this a D-Bus method?
1689
904
elif getattr(attribute, "_dbus_is_method", False):
1690
905
# Create a new, but exactly alike, function
1691
906
# object. Decorate it to be a new D-Bus method
1692
907
# with the alternate D-Bus interface name. Add it
1693
908
# to the class.
1694
attr[attrname] = (
1695
dbus.service.method(
1696
alt_interface,
1697
attribute._dbus_in_signature,
1698
attribute._dbus_out_signature)
1699
(copy_function(attribute)))
1700
# Copy annotations, if any
1701
try:
1702
attr[attrname]._dbus_annotations = dict(
1703
attribute._dbus_annotations)
1704
except AttributeError:
1705
pass
909
attr[attrname] = (dbus.service.method
910
(alt_interface,
911
attribute._dbus_in_signature,
912
attribute._dbus_out_signature)
913
(types.FunctionType
914
(attribute.func_code,
915
attribute.func_globals,
916
attribute.func_name,
917
attribute.func_defaults,
918
attribute.func_closure)))
1706
919
# Is this a D-Bus property?
1707
920
elif getattr(attribute, "_dbus_is_property", False):
1708
921
# Create a new, but exactly alike, function
1709
922
# object, and decorate it to be a new D-Bus
1710
923
# property with the alternate D-Bus interface
1711
924
# name. Add it to the class.
1712
attr[attrname] = (dbus_service_property(
1713
alt_interface, attribute._dbus_signature,
1714
attribute._dbus_access,
1715
attribute._dbus_get_args_options
1716
["byte_arrays"])
1717
(copy_function(attribute)))
1718
# Copy annotations, if any
1719
try:
1720
attr[attrname]._dbus_annotations = dict(
1721
attribute._dbus_annotations)
1722
except AttributeError:
1723
pass
1724
# Is this a D-Bus interface?
1725
elif getattr(attribute, "_dbus_is_interface", False):
1726
# Create a new, but exactly alike, function
1727
# object. Decorate it to be a new D-Bus interface
1728
# with the alternate D-Bus interface name. Add it
1729
# to the class.
1730
attr[attrname] = (
1731
dbus_interface_annotations(alt_interface)
1732
(copy_function(attribute)))
1733
if deprecate:
1734
# Deprecate all alternate interfaces
1735
iname = "_AlternateDBusNames_interface_annotation{}"
1736
for interface_name in interface_names:
1737
1738
@dbus_interface_annotations(interface_name)
1739
def func(self):
1740
return {"org.freedesktop.DBus.Deprecated":
1741
"true"}
1742
# Find an unused name
1743
for aname in (iname.format(i)
1744
for i in itertools.count()):
1745
if aname not in attr:
1746
attr[aname] = func
1747
break
1748
if interface_names:
1749
# Replace the class with a new subclass of it with
1750
# methods, signals, etc. as created above.
1751
if sys.version_info.major == 2:
1752
cls = type(b"{}Alternate".format(cls.__name__),
1753
(cls, ), attr)
1754
else:
1755
cls = type("{}Alternate".format(cls.__name__),
1756
(cls, ), attr)
1757
return cls
1758
1759
return wrapper
1760
1761
1762
@alternate_dbus_interfaces({"se.recompile.Mandos":
1763
"se.bsnet.fukt.Mandos"})
925
attr[attrname] = (dbus_service_property
926
(alt_interface,
927
attribute._dbus_signature,
928
attribute._dbus_access,
929
attribute
930
._dbus_get_args_options
931
["byte_arrays"])
932
(types.FunctionType
933
(attribute.func_code,
934
attribute.func_globals,
935
attribute.func_name,
936
attribute.func_defaults,
937
attribute.func_closure)))
938
return type.__new__(mcs, name, bases, attr)
939
1764
940
class ClientDBus(Client, DBusObjectWithProperties):
1765
941
"""A Client class using D-Bus
1766
942
1767
943
Attributes:
1768
944
dbus_object_path: dbus.ObjectPath
1769
945
bus: dbus.SystemBus()
1770
946
"""
1771
947
1772
948
runtime_expansions = (Client.runtime_expansions
1773
+ ("dbus_object_path", ))
1774
1775
_interface = "se.recompile.Mandos.Client"
1776
949
+ ("dbus_object_path",))
950
1777
951
# dbus.service.Object doesn't use super(), so we can't either.
1778
1779
def __init__(self, bus=None, *args, **kwargs):
952
953
def __init__(self, bus = None, *args, **kwargs):
1780
954
self.bus = bus
955
self._approvals_pending = 0
1781
956
Client.__init__(self, *args, **kwargs)
957
self.add_to_dbus()
958
959
def add_to_dbus(self):
1782
960
# Only now, when this client is initialized, can it show up on
1783
961
# the D-Bus
1784
client_object_name = str(self.name).translate(
962
client_object_name = unicode(self.name).translate(
1785
963
{ord("."): ord("_"),
1786
964
ord("-"): ord("_")})
1787
self.dbus_object_path = dbus.ObjectPath(
1788
"/clients/" + client_object_name)
965
self.dbus_object_path = (dbus.ObjectPath
966
("/clients/" + client_object_name))
1789
967
DBusObjectWithProperties.__init__(self, self.bus,
1790
968
self.dbus_object_path)
1791
1792
def notifychangeproperty(transform_func, dbus_name,
1793
type_func=lambda x: x,
1794
variant_level=1,
1795
invalidate_only=False,
1796
_interface=_interface):
969
970
def notifychangeproperty(transform_func,
971
dbus_name, type_func=lambda x: x,
972
variant_level=1):
1797
973
""" Modify a variable so that it's a property which announces
1798
974
its changes to DBus.
1799
975
1804
980
to the D-Bus. Default: no transform
1805
981
variant_level: D-Bus variant level. Default: 1
1806
982
"""
1807
attrname = "_{}".format(dbus_name)
1808
983
attrname = "_{0}".format(dbus_name)
1809
984
def setter(self, value):
1810
985
if hasattr(self, "dbus_object_path"):
1811
986
if (not hasattr(self, attrname) or
1812
987
type_func(getattr(self, attrname, None))
1813
988
!= type_func(value)):
1814
if invalidate_only:
1815
self.PropertiesChanged(
1816
_interface, dbus.Dictionary(),
1817
dbus.Array((dbus_name, )))
1818
else:
1819
dbus_value = transform_func(
1820
type_func(value),
1821
variant_level=variant_level)
1822
self.PropertyChanged(dbus.String(dbus_name),
1823
dbus_value)
1824
self.PropertiesChanged(
1825
_interface,
1826
dbus.Dictionary({dbus.String(dbus_name):
1827
dbus_value}),
1828
dbus.Array())
989
dbus_value = transform_func(type_func(value),
990
variant_level
991
=variant_level)
992
self.PropertyChanged(dbus.String(dbus_name),
993
dbus_value)
1829
994
setattr(self, attrname, value)
1830
995
1831
996
return property(lambda self: getattr(self, attrname), setter)
1832
997
998
1833
999
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1834
1000
approvals_pending = notifychangeproperty(dbus.Boolean,
1835
1001
"ApprovalPending",
1836
type_func=bool)
1002
type_func = bool)
1837
1003
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1838
1004
last_enabled = notifychangeproperty(datetime_to_dbus,
1839
1005
"LastEnabled")
1840
checker = notifychangeproperty(
1841
dbus.Boolean, "CheckerRunning",
1842
type_func=lambda checker: checker is not None)
1006
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1007
type_func = lambda checker:
1008
checker is not None)
1843
1009
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1844
1010
"LastCheckedOK")
1845
last_checker_status = notifychangeproperty(dbus.Int16,
1846
"LastCheckerStatus")
1847
1011
last_approval_request = notifychangeproperty(
1848
1012
datetime_to_dbus, "LastApprovalRequest")
1849
1013
approved_by_default = notifychangeproperty(dbus.Boolean,
1850
1014
"ApprovedByDefault")
1851
approval_delay = notifychangeproperty(
1852
dbus.UInt64, "ApprovalDelay",
1853
type_func=lambda td: td.total_seconds() * 1000)
1015
approval_delay = notifychangeproperty(dbus.UInt16,
1016
"ApprovalDelay",
1017
type_func =
1018
_timedelta_to_milliseconds)
1854
1019
approval_duration = notifychangeproperty(
1855
dbus.UInt64, "ApprovalDuration",
1856
type_func=lambda td: td.total_seconds() * 1000)
1020
dbus.UInt16, "ApprovalDuration",
1021
type_func = _timedelta_to_milliseconds)
1857
1022
host = notifychangeproperty(dbus.String, "Host")
1858
timeout = notifychangeproperty(
1859
dbus.UInt64, "Timeout",
1860
type_func=lambda td: td.total_seconds() * 1000)
1023
timeout = notifychangeproperty(dbus.UInt16, "Timeout",
1024
type_func =
1025
_timedelta_to_milliseconds)
1861
1026
extended_timeout = notifychangeproperty(
1862
dbus.UInt64, "ExtendedTimeout",
1863
type_func=lambda td: td.total_seconds() * 1000)
1864
interval = notifychangeproperty(
1865
dbus.UInt64, "Interval",
1866
type_func=lambda td: td.total_seconds() * 1000)
1027
dbus.UInt16, "ExtendedTimeout",
1028
type_func = _timedelta_to_milliseconds)
1029
interval = notifychangeproperty(dbus.UInt16,
1030
"Interval",
1031
type_func =
1032
_timedelta_to_milliseconds)
1867
1033
checker_command = notifychangeproperty(dbus.String, "Checker")
1868
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1869
invalidate_only=True)
1870
1034
1871
1035
del notifychangeproperty
1872
1036
1873
1037
def __del__(self, *args, **kwargs):
1874
1038
try:
1875
1039
self.remove_from_connection()
1878
1042
if hasattr(DBusObjectWithProperties, "__del__"):
1879
1043
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1880
1044
Client.__del__(self, *args, **kwargs)
1881
1882
def checker_callback(self, source, condition,
1883
connection, command, *args, **kwargs):
1884
ret = Client.checker_callback(self, source, condition,
1885
connection, command, *args,
1886
**kwargs)
1887
exitstatus = self.last_checker_status
1888
if exitstatus >= 0:
1045
1046
def checker_callback(self, pid, condition, command,
1047
*args, **kwargs):
1048
self.checker_callback_tag = None
1049
self.checker = None
1050
if os.WIFEXITED(condition):
1051
exitstatus = os.WEXITSTATUS(condition)
1889
1052
# Emit D-Bus signal
1890
1053
self.CheckerCompleted(dbus.Int16(exitstatus),
1891
# This is specific to GNU libC
1892
dbus.Int64(exitstatus << 8),
1054
dbus.Int64(condition),
1893
1055
dbus.String(command))
1894
1056
else:
1895
1057
# Emit D-Bus signal
1896
1058
self.CheckerCompleted(dbus.Int16(-1),
1897
dbus.Int64(
1898
# This is specific to GNU libC
1899
(exitstatus << 8)
1900
| self.last_checker_signal),
1059
dbus.Int64(condition),
1901
1060
dbus.String(command))
1902
return ret
1903
1061
1062
return Client.checker_callback(self, pid, condition, command,
1063
*args, **kwargs)
1064
1904
1065
def start_checker(self, *args, **kwargs):
1905
old_checker_pid = getattr(self.checker, "pid", None)
1066
old_checker = self.checker
1067
if self.checker is not None:
1068
old_checker_pid = self.checker.pid
1069
else:
1070
old_checker_pid = None
1906
1071
r = Client.start_checker(self, *args, **kwargs)
1907
1072
# Only if new checker process was started
1908
1073
if (self.checker is not None
1910
1075
# Emit D-Bus signal
1911
1076
self.CheckerStarted(self.current_checker_command)
1912
1077
return r
1913
1078
1914
1079
def _reset_approved(self):
1915
self.approved = None
1080
self._approved = None
1916
1081
return False
1917
1082
1918
1083
def approve(self, value=True):
1919
self.approved = value
1920
GLib.timeout_add(int(self.approval_duration.total_seconds()
1921
* 1000), self._reset_approved)
1922
1084
self.send_changedstate()
1923
1924
# D-Bus methods, signals & properties
1925
1926
# Interfaces
1927
1928
# Signals
1929
1085
self._approved = value
1086
gobject.timeout_add(_timedelta_to_milliseconds
1087
(self.approval_duration),
1088
self._reset_approved)
1089
1090
1091
## D-Bus methods, signals & properties
1092
_interface = "se.recompile.Mandos.Client"
1093
1094
## Signals
1095
1930
1096
# CheckerCompleted - signal
1931
1097
@dbus.service.signal(_interface, signature="nxs")
1932
1098
def CheckerCompleted(self, exitcode, waitstatus, command):
1933
1099
"D-Bus signal"
1934
1100
pass
1935
1101
1936
1102
# CheckerStarted - signal
1937
1103
@dbus.service.signal(_interface, signature="s")
1938
1104
def CheckerStarted(self, command):
1939
1105
"D-Bus signal"
1940
1106
pass
1941
1107
1942
1108
# PropertyChanged - signal
1943
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1944
1109
@dbus.service.signal(_interface, signature="sv")
1945
1110
def PropertyChanged(self, property, value):
1946
1111
"D-Bus signal"
1947
1112
pass
1948
1113
1949
1114
# GotSecret - signal
1950
1115
@dbus.service.signal(_interface)
1951
1116
def GotSecret(self):
1954
1119
server to mandos-client
1955
1120
"""
1956
1121
pass
1957
1122
1958
1123
# Rejected - signal
1959
1124
@dbus.service.signal(_interface, signature="s")
1960
1125
def Rejected(self, reason):
1961
1126
"D-Bus signal"
1962
1127
pass
1963
1128
1964
1129
# NeedApproval - signal
1965
1130
@dbus.service.signal(_interface, signature="tb")
1966
1131
def NeedApproval(self, timeout, default):
1967
1132
"D-Bus signal"
1968
1133
return self.need_approval()
1969
1970
# Methods
1971
1134
1135
## Methods
1136
1972
1137
# Approve - method
1973
1138
@dbus.service.method(_interface, in_signature="b")
1974
1139
def Approve(self, value):
1975
1140
self.approve(value)
1976
1141
1977
1142
# CheckedOK - method
1978
1143
@dbus.service.method(_interface)
1979
1144
def CheckedOK(self):
1980
1145
self.checked_ok()
1981
1146
1982
1147
# Enable - method
1983
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1984
1148
@dbus.service.method(_interface)
1985
1149
def Enable(self):
1986
1150
"D-Bus method"
1987
1151
self.enable()
1988
1152
1989
1153
# StartChecker - method
1990
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1991
1154
@dbus.service.method(_interface)
1992
1155
def StartChecker(self):
1993
1156
"D-Bus method"
1994
1157
self.start_checker()
1995
1158
1996
1159
# Disable - method
1997
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1998
1160
@dbus.service.method(_interface)
1999
1161
def Disable(self):
2000
1162
"D-Bus method"
2001
1163
self.disable()
2002
1164
2003
1165
# StopChecker - method
2004
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2005
1166
@dbus.service.method(_interface)
2006
1167
def StopChecker(self):
2007
1168
self.stop_checker()
2008
2009
# Properties
2010
1169
1170
## Properties
1171
2011
1172
# ApprovalPending - property
2012
1173
@dbus_service_property(_interface, signature="b", access="read")
2013
1174
def ApprovalPending_dbus_property(self):
2014
1175
return dbus.Boolean(bool(self.approvals_pending))
2015
1176
2016
1177
# ApprovedByDefault - property
2017
@dbus_service_property(_interface,
2018
signature="b",
1178
@dbus_service_property(_interface, signature="b",
2019
1179
access="readwrite")
2020
1180
def ApprovedByDefault_dbus_property(self, value=None):
2021
1181
if value is None: # get
2022
1182
return dbus.Boolean(self.approved_by_default)
2023
1183
self.approved_by_default = bool(value)
2024
1184
2025
1185
# ApprovalDelay - property
2026
@dbus_service_property(_interface,
2027
signature="t",
1186
@dbus_service_property(_interface, signature="t",
2028
1187
access="readwrite")
2029
1188
def ApprovalDelay_dbus_property(self, value=None):
2030
1189
if value is None: # get
2031
return dbus.UInt64(self.approval_delay.total_seconds()
2032
* 1000)
1190
return dbus.UInt64(self.approval_delay_milliseconds())
2033
1191
self.approval_delay = datetime.timedelta(0, 0, 0, value)
2034
1192
2035
1193
# ApprovalDuration - property
2036
@dbus_service_property(_interface,
2037
signature="t",
1194
@dbus_service_property(_interface, signature="t",
2038
1195
access="readwrite")
2039
1196
def ApprovalDuration_dbus_property(self, value=None):
2040
1197
if value is None: # get
2041
return dbus.UInt64(self.approval_duration.total_seconds()
2042
* 1000)
1198
return dbus.UInt64(_timedelta_to_milliseconds(
1199
self.approval_duration))
2043
1200
self.approval_duration = datetime.timedelta(0, 0, 0, value)
2044
1201
2045
1202
# Name - property
2046
@dbus_annotations(
2047
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2048
1203
@dbus_service_property(_interface, signature="s", access="read")
2049
1204
def Name_dbus_property(self):
2050
1205
return dbus.String(self.name)
2051
2052
# KeyID - property
2053
@dbus_annotations(
2054
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2055
@dbus_service_property(_interface, signature="s", access="read")
2056
def KeyID_dbus_property(self):
2057
return dbus.String(self.key_id)
2058
1206
2059
1207
# Fingerprint - property
2060
@dbus_annotations(
2061
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2062
1208
@dbus_service_property(_interface, signature="s", access="read")
2063
1209
def Fingerprint_dbus_property(self):
2064
1210
return dbus.String(self.fingerprint)
2065
1211
2066
1212
# Host - property
2067
@dbus_service_property(_interface,
2068
signature="s",
1213
@dbus_service_property(_interface, signature="s",
2069
1214
access="readwrite")
2070
1215
def Host_dbus_property(self, value=None):
2071
1216
if value is None: # get
2072
1217
return dbus.String(self.host)
2073
self.host = str(value)
2074
1218
self.host = value
1219
2075
1220
# Created - property
2076
@dbus_annotations(
2077
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2078
1221
@dbus_service_property(_interface, signature="s", access="read")
2079
1222
def Created_dbus_property(self):
2080
return datetime_to_dbus(self.created)
2081
1223
return dbus.String(datetime_to_dbus(self.created))
1224
2082
1225
# LastEnabled - property
2083
1226
@dbus_service_property(_interface, signature="s", access="read")
2084
1227
def LastEnabled_dbus_property(self):
2085
1228
return datetime_to_dbus(self.last_enabled)
2086
1229
2087
1230
# Enabled - property
2088
@dbus_service_property(_interface,
2089
signature="b",
1231
@dbus_service_property(_interface, signature="b",
2090
1232
access="readwrite")
2091
1233
def Enabled_dbus_property(self, value=None):
2092
1234
if value is None: # get
2095
1237
self.enable()
2096
1238
else:
2097
1239
self.disable()
2098
1240
2099
1241
# LastCheckedOK - property
2100
@dbus_service_property(_interface,
2101
signature="s",
1242
@dbus_service_property(_interface, signature="s",
2102
1243
access="readwrite")
2103
1244
def LastCheckedOK_dbus_property(self, value=None):
2104
1245
if value is not None:
2105
1246
self.checked_ok()
2106
1247
return
2107
1248
return datetime_to_dbus(self.last_checked_ok)
2108
2109
# LastCheckerStatus - property
2110
@dbus_service_property(_interface, signature="n", access="read")
2111
def LastCheckerStatus_dbus_property(self):
2112
return dbus.Int16(self.last_checker_status)
2113
1249
2114
1250
# Expires - property
2115
1251
@dbus_service_property(_interface, signature="s", access="read")
2116
1252
def Expires_dbus_property(self):
2117
1253
return datetime_to_dbus(self.expires)
2118
1254
2119
1255
# LastApprovalRequest - property
2120
1256
@dbus_service_property(_interface, signature="s", access="read")
2121
1257
def LastApprovalRequest_dbus_property(self):
2122
1258
return datetime_to_dbus(self.last_approval_request)
2123
1259
2124
1260
# Timeout - property
2125
@dbus_service_property(_interface,
2126
signature="t",
1261
@dbus_service_property(_interface, signature="t",
2127
1262
access="readwrite")
2128
1263
def Timeout_dbus_property(self, value=None):
2129
1264
if value is None: # get
2130
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2131
old_timeout = self.timeout
1265
return dbus.UInt64(self.timeout_milliseconds())
2132
1266
self.timeout = datetime.timedelta(0, 0, 0, value)
2133
# Reschedule disabling
2134
if self.enabled:
2135
now = datetime.datetime.utcnow()
2136
self.expires += self.timeout - old_timeout
2137
if self.expires <= now:
2138
# The timeout has passed
2139
self.disable()
2140
else:
2141
if (getattr(self, "disable_initiator_tag", None)
2142
is None):
2143
return
2144
GLib.source_remove(self.disable_initiator_tag)
2145
self.disable_initiator_tag = GLib.timeout_add(
2146
int((self.expires - now).total_seconds() * 1000),
2147
self.disable)
2148
1267
if getattr(self, "disable_initiator_tag", None) is None:
1268
return
1269
# Reschedule timeout
1270
gobject.source_remove(self.disable_initiator_tag)
1271
self.disable_initiator_tag = None
1272
self.expires = None
1273
time_to_die = _timedelta_to_milliseconds((self
1274
.last_checked_ok
1275
+ self.timeout)
1276
- datetime.datetime
1277
.utcnow())
1278
if time_to_die <= 0:
1279
# The timeout has passed
1280
self.disable()
1281
else:
1282
self.expires = (datetime.datetime.utcnow()
1283
+ datetime.timedelta(milliseconds =
1284
time_to_die))
1285
self.disable_initiator_tag = (gobject.timeout_add
1286
(time_to_die, self.disable))
1287
2149
1288
# ExtendedTimeout - property
2150
@dbus_service_property(_interface,
2151
signature="t",
1289
@dbus_service_property(_interface, signature="t",
2152
1290
access="readwrite")
2153
1291
def ExtendedTimeout_dbus_property(self, value=None):
2154
1292
if value is None: # get
2155
return dbus.UInt64(self.extended_timeout.total_seconds()
2156
* 1000)
1293
return dbus.UInt64(self.extended_timeout_milliseconds())
2157
1294
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2158
1295
2159
1296
# Interval - property
2160
@dbus_service_property(_interface,
2161
signature="t",
1297
@dbus_service_property(_interface, signature="t",
2162
1298
access="readwrite")
2163
1299
def Interval_dbus_property(self, value=None):
2164
1300
if value is None: # get
2165
return dbus.UInt64(self.interval.total_seconds() * 1000)
1301
return dbus.UInt64(self.interval_milliseconds())
2166
1302
self.interval = datetime.timedelta(0, 0, 0, value)
2167
1303
if getattr(self, "checker_initiator_tag", None) is None:
2168
1304
return
2169
if self.enabled:
2170
# Reschedule checker run
2171
GLib.source_remove(self.checker_initiator_tag)
2172
self.checker_initiator_tag = GLib.timeout_add(
2173
value, self.start_checker)
2174
self.start_checker() # Start one now, too
2175
1305
# Reschedule checker run
1306
gobject.source_remove(self.checker_initiator_tag)
1307
self.checker_initiator_tag = (gobject.timeout_add
1308
(value, self.start_checker))
1309
self.start_checker() # Start one now, too
1310
2176
1311
# Checker - property
2177
@dbus_service_property(_interface,
2178
signature="s",
1312
@dbus_service_property(_interface, signature="s",
2179
1313
access="readwrite")
2180
1314
def Checker_dbus_property(self, value=None):
2181
1315
if value is None: # get
2182
1316
return dbus.String(self.checker_command)
2183
self.checker_command = str(value)
2184
1317
self.checker_command = value
1318
2185
1319
# CheckerRunning - property
2186
@dbus_service_property(_interface,
2187
signature="b",
1320
@dbus_service_property(_interface, signature="b",
2188
1321
access="readwrite")
2189
1322
def CheckerRunning_dbus_property(self, value=None):
2190
1323
if value is None: # get
2193
1326
self.start_checker()
2194
1327
else:
2195
1328
self.stop_checker()
2196
1329
2197
1330
# ObjectPath - property
2198
@dbus_annotations(
2199
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2200
"org.freedesktop.DBus.Deprecated": "true"})
2201
1331
@dbus_service_property(_interface, signature="o", access="read")
2202
1332
def ObjectPath_dbus_property(self):
2203
return self.dbus_object_path # is already a dbus.ObjectPath
2204
1333
return self.dbus_object_path # is already a dbus.ObjectPath
1334
2205
1335
# Secret = property
2206
@dbus_annotations(
2207
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2208
"invalidates"})
2209
@dbus_service_property(_interface,
2210
signature="ay",
2211
access="write",
2212
byte_arrays=True)
1336
@dbus_service_property(_interface, signature="ay",
1337
access="write", byte_arrays=True)
2213
1338
def Secret_dbus_property(self, value):
2214
self.secret = bytes(value)
2215
1339
self.secret = str(value)
1340
2216
1341
del _interface
2217
1342
2218
1343
2219
class ProxyClient:
2220
def __init__(self, child_pipe, key_id, fpr, address):
1344
class ProxyClient(object):
1345
def __init__(self, child_pipe, fpr, address):
2221
1346
self._pipe = child_pipe
2222
self._pipe.send(('init', key_id, fpr, address))
1347
self._pipe.send(('init', fpr, address))
2223
1348
if not self._pipe.recv():
2224
raise KeyError(key_id or fpr)
2225
1349
raise KeyError()
1350
2226
1351
def __getattribute__(self, name):
2227
if name == '_pipe':
1352
if(name == '_pipe'):
2228
1353
return super(ProxyClient, self).__getattribute__(name)
2229
1354
self._pipe.send(('getattr', name))
2230
1355
data = self._pipe.recv()
2231
1356
if data[0] == 'data':
2232
1357
return data[1]
2233
1358
if data[0] == 'function':
2234
2235
1359
def func(*args, **kwargs):
2236
1360
self._pipe.send(('funcall', name, args, kwargs))
2237
1361
return self._pipe.recv()[1]
2238
2239
1362
return func
2240
1363
2241
1364
def __setattr__(self, name, value):
2242
if name == '_pipe':
1365
if(name == '_pipe'):
2243
1366
return super(ProxyClient, self).__setattr__(name, value)
2244
1367
self._pipe.send(('setattr', name, value))
2245
1368
1369
class ClientDBusTransitional(ClientDBus):
1370
__metaclass__ = AlternateDBusNamesMetaclass
2246
1371
2247
1372
class ClientHandler(socketserver.BaseRequestHandler, object):
2248
1373
"""A class to handle client connections.
2249
1374
2250
1375
Instantiated once for each connection to handle it.
2251
1376
Note: This will run in its own forked process."""
2252
1377
2253
1378
def handle(self):
2254
1379
with contextlib.closing(self.server.child_pipe) as child_pipe:
2255
1380
logger.info("TCP connection from: %s",
2256
str(self.client_address))
1381
unicode(self.client_address))
2257
1382
logger.debug("Pipe FD: %d",
2258
1383
self.server.child_pipe.fileno())
2259
2260
session = gnutls.ClientSession(self.request)
2261
2262
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2263
# "+AES-256-CBC", "+SHA1",
2264
# "+COMP-NULL", "+CTYPE-OPENPGP",
2265
# "+DHE-DSS"))
1384
1385
session = (gnutls.connection
1386
.ClientSession(self.request,
1387
gnutls.connection
1388
.X509Credentials()))
1389
1390
# Note: gnutls.connection.X509Credentials is really a
1391
# generic GnuTLS certificate credentials object so long as
1392
# no X.509 keys are added to it. Therefore, we can use it
1393
# here despite using OpenPGP certificates.
1394
1395
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1396
# "+AES-256-CBC", "+SHA1",
1397
# "+COMP-NULL", "+CTYPE-OPENPGP",
1398
# "+DHE-DSS"))
2266
1399
# Use a fallback default, since this MUST be set.
2267
1400
priority = self.server.gnutls_priority
2268
1401
if priority is None:
2269
1402
priority = "NORMAL"
2270
gnutls.priority_set_direct(session._c_object,
2271
priority.encode("utf-8"),
2272
None)
2273
1403
(gnutls.library.functions
1404
.gnutls_priority_set_direct(session._c_object,
1405
priority, None))
1406
2274
1407
# Start communication using the Mandos protocol
2275
1408
# Get protocol number
2276
1409
line = self.request.makefile().readline()
2277
1410
logger.debug("Protocol version: %r", line)
2278
1411
try:
2279
1412
if int(line.strip().split()[0]) > 1:
2280
raise RuntimeError(line)
1413
raise RuntimeError
2281
1414
except (ValueError, IndexError, RuntimeError) as error:
2282
1415
logger.error("Unknown protocol version: %s", error)
2283
1416
return
2284
1417
2285
1418
# Start GnuTLS connection
2286
1419
try:
2287
1420
session.handshake()
2288
except gnutls.Error as error:
1421
except gnutls.errors.GNUTLSError as error:
2289
1422
logger.warning("Handshake failed: %s", error)
2290
1423
# Do not run session.bye() here: the session is not
2291
1424
# established. Just abandon the request.
2292
1425
return
2293
1426
logger.debug("Handshake succeeded")
2294
1427
2295
1428
approval_required = False
2296
1429
try:
2297
if gnutls.has_rawpk:
2298
fpr = b""
2299
try:
2300
key_id = self.key_id(
2301
self.peer_certificate(session))
2302
except (TypeError, gnutls.Error) as error:
2303
logger.warning("Bad certificate: %s", error)
2304
return
2305
logger.debug("Key ID: %s", key_id)
2306
2307
else:
2308
key_id = b""
2309
try:
2310
fpr = self.fingerprint(
2311
self.peer_certificate(session))
2312
except (TypeError, gnutls.Error) as error:
2313
logger.warning("Bad certificate: %s", error)
2314
return
2315
logger.debug("Fingerprint: %s", fpr)
2316
2317
try:
2318
client = ProxyClient(child_pipe, key_id, fpr,
1430
try:
1431
fpr = self.fingerprint(self.peer_certificate
1432
(session))
1433
except (TypeError,
1434
gnutls.errors.GNUTLSError) as error:
1435
logger.warning("Bad certificate: %s", error)
1436
return
1437
logger.debug("Fingerprint: %s", fpr)
1438
1439
try:
1440
client = ProxyClient(child_pipe, fpr,
2319
1441
self.client_address)
2320
1442
except KeyError:
2321
1443
return
2322
1444
2323
1445
if client.approval_delay:
2324
1446
delay = client.approval_delay
2325
1447
client.approvals_pending += 1
2326
1448
approval_required = True
2327
1449
2328
1450
while True:
2329
1451
if not client.enabled:
2330
1452
logger.info("Client %s is disabled",
2331
client.name)
1453
client.name)
2332
1454
if self.server.use_dbus:
2333
1455
# Emit D-Bus signal
2334
1456
client.Rejected("Disabled")
2335
1457
return
2336
2337
if client.approved or not client.approval_delay:
2338
# We are approved or approval is disabled
1458
1459
if client._approved or not client.approval_delay:
1460
#We are approved or approval is disabled
2339
1461
break
2340
elif client.approved is None:
1462
elif client._approved is None:
2341
1463
logger.info("Client %s needs approval",
2342
1464
client.name)
2343
1465
if self.server.use_dbus:
2344
1466
# Emit D-Bus signal
2345
1467
client.NeedApproval(
2346
client.approval_delay.total_seconds()
2347
* 1000, client.approved_by_default)
1468
client.approval_delay_milliseconds(),
1469
client.approved_by_default)
2348
1470
else:
2349
1471
logger.warning("Client %s was not approved",
2350
1472
client.name)
2352
1474
# Emit D-Bus signal
2353
1475
client.Rejected("Denied")
2354
1476
return
2355
2356
# wait until timeout or approved
1477
1478
#wait until timeout or approved
2357
1479
time = datetime.datetime.now()
2358
1480
client.changedstate.acquire()
2359
client.changedstate.wait(delay.total_seconds())
1481
(client.changedstate.wait
1482
(float(client._timedelta_to_milliseconds(delay)
1483
/ 1000)))
2360
1484
client.changedstate.release()
2361
1485
time2 = datetime.datetime.now()
2362
1486
if (time2 - time) >= delay:
2372
1496
break
2373
1497
else:
2374
1498
delay -= time2 - time
2375
2376
try:
2377
session.send(client.secret)
2378
except gnutls.Error as error:
2379
logger.warning("gnutls send failed",
2380
exc_info=error)
2381
return
2382
1499
1500
sent_size = 0
1501
while sent_size < len(client.secret):
1502
try:
1503
sent = session.send(client.secret[sent_size:])
1504
except gnutls.errors.GNUTLSError as error:
1505
logger.warning("gnutls send failed")
1506
return
1507
logger.debug("Sent: %d, remaining: %d",
1508
sent, len(client.secret)
1509
- (sent_size + sent))
1510
sent_size += sent
1511
2383
1512
logger.info("Sending secret to %s", client.name)
2384
1513
# bump the timeout using extended_timeout
2385
client.bump_timeout(client.extended_timeout)
1514
client.checked_ok(client.extended_timeout)
2386
1515
if self.server.use_dbus:
2387
1516
# Emit D-Bus signal
2388
1517
client.GotSecret()
2389
1518
2390
1519
finally:
2391
1520
if approval_required:
2392
1521
client.approvals_pending -= 1
2393
1522
try:
2394
1523
session.bye()
2395
except gnutls.Error as error:
2396
logger.warning("GnuTLS bye failed",
2397
exc_info=error)
2398
1524
except gnutls.errors.GNUTLSError as error:
1525
logger.warning("GnuTLS bye failed")
1526
2399
1527
@staticmethod
2400
1528
def peer_certificate(session):
2401
"Return the peer's certificate as a bytestring"
2402
try:
2403
cert_type = gnutls.certificate_type_get2(session._c_object,
2404
gnutls.CTYPE_PEERS)
2405
except AttributeError:
2406
cert_type = gnutls.certificate_type_get(session._c_object)
2407
if gnutls.has_rawpk:
2408
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2409
else:
2410
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2411
# If not a valid certificate type...
2412
if cert_type not in valid_cert_types:
2413
logger.info("Cert type %r not in %r", cert_type,
2414
valid_cert_types)
2415
# ...return invalid data
2416
return b""
1529
"Return the peer's OpenPGP certificate as a bytestring"
1530
# If not an OpenPGP certificate...
1531
if (gnutls.library.functions
1532
.gnutls_certificate_type_get(session._c_object)
1533
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1534
# ...do the normal thing
1535
return session.peer_certificate
2417
1536
list_size = ctypes.c_uint(1)
2418
cert_list = (gnutls.certificate_get_peers
1537
cert_list = (gnutls.library.functions
1538
.gnutls_certificate_get_peers
2419
1539
(session._c_object, ctypes.byref(list_size)))
2420
1540
if not bool(cert_list) and list_size.value != 0:
2421
raise gnutls.Error("error getting peer certificate")
1541
raise gnutls.errors.GNUTLSError("error getting peer"
1542
" certificate")
2422
1543
if list_size.value == 0:
2423
1544
return None
2424
1545
cert = cert_list[0]
2425
1546
return ctypes.string_at(cert.data, cert.size)
2426
2427
@staticmethod
2428
def key_id(certificate):
2429
"Convert a certificate bytestring to a hexdigit key ID"
2430
# New GnuTLS "datum" with the public key
2431
datum = gnutls.datum_t(
2432
ctypes.cast(ctypes.c_char_p(certificate),
2433
ctypes.POINTER(ctypes.c_ubyte)),
2434
ctypes.c_uint(len(certificate)))
2435
# XXX all these need to be created in the gnutls "module"
2436
# New empty GnuTLS certificate
2437
pubkey = gnutls.pubkey_t()
2438
gnutls.pubkey_init(ctypes.byref(pubkey))
2439
# Import the raw public key into the certificate
2440
gnutls.pubkey_import(pubkey,
2441
ctypes.byref(datum),
2442
gnutls.X509_FMT_DER)
2443
# New buffer for the key ID
2444
buf = ctypes.create_string_buffer(32)
2445
buf_len = ctypes.c_size_t(len(buf))
2446
# Get the key ID from the raw public key into the buffer
2447
gnutls.pubkey_get_key_id(pubkey,
2448
gnutls.KEYID_USE_SHA256,
2449
ctypes.cast(ctypes.byref(buf),
2450
ctypes.POINTER(ctypes.c_ubyte)),
2451
ctypes.byref(buf_len))
2452
# Deinit the certificate
2453
gnutls.pubkey_deinit(pubkey)
2454
2455
# Convert the buffer to a Python bytestring
2456
key_id = ctypes.string_at(buf, buf_len.value)
2457
# Convert the bytestring to hexadecimal notation
2458
hex_key_id = binascii.hexlify(key_id).upper()
2459
return hex_key_id
2460
1547
2461
1548
@staticmethod
2462
1549
def fingerprint(openpgp):
2463
1550
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2464
1551
# New GnuTLS "datum" with the OpenPGP public key
2465
datum = gnutls.datum_t(
2466
ctypes.cast(ctypes.c_char_p(openpgp),
2467
ctypes.POINTER(ctypes.c_ubyte)),
2468
ctypes.c_uint(len(openpgp)))
1552
datum = (gnutls.library.types
1553
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1554
ctypes.POINTER
1555
(ctypes.c_ubyte)),
1556
ctypes.c_uint(len(openpgp))))
2469
1557
# New empty GnuTLS certificate
2470
crt = gnutls.openpgp_crt_t()
2471
gnutls.openpgp_crt_init(ctypes.byref(crt))
1558
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1559
(gnutls.library.functions
1560
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2472
1561
# Import the OpenPGP public key into the certificate
2473
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2474
gnutls.OPENPGP_FMT_RAW)
1562
(gnutls.library.functions
1563
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1564
gnutls.library.constants
1565
.GNUTLS_OPENPGP_FMT_RAW))
2475
1566
# Verify the self signature in the key
2476
1567
crtverify = ctypes.c_uint()
2477
gnutls.openpgp_crt_verify_self(crt, 0,
2478
ctypes.byref(crtverify))
1568
(gnutls.library.functions
1569
.gnutls_openpgp_crt_verify_self(crt, 0,
1570
ctypes.byref(crtverify)))
2479
1571
if crtverify.value != 0:
2480
gnutls.openpgp_crt_deinit(crt)
2481
raise gnutls.CertificateSecurityError(code
2482
=crtverify.value)
1572
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1573
raise (gnutls.errors.CertificateSecurityError
1574
("Verify failed"))
2483
1575
# New buffer for the fingerprint
2484
1576
buf = ctypes.create_string_buffer(20)
2485
1577
buf_len = ctypes.c_size_t()
2486
1578
# Get the fingerprint from the certificate into the buffer
2487
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2488
ctypes.byref(buf_len))
1579
(gnutls.library.functions
1580
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1581
ctypes.byref(buf_len)))
2489
1582
# Deinit the certificate
2490
gnutls.openpgp_crt_deinit(crt)
1583
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2491
1584
# Convert the buffer to a Python bytestring
2492
1585
fpr = ctypes.string_at(buf, buf_len.value)
2493
1586
# Convert the bytestring to hexadecimal notation
2494
hex_fpr = binascii.hexlify(fpr).upper()
1587
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
2495
1588
return hex_fpr
2496
1589
2497
1590
2498
class MultiprocessingMixIn:
1591
class MultiprocessingMixIn(object):
2499
1592
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2500
2501
1593
def sub_process_main(self, request, address):
2502
1594
try:
2503
1595
self.finish_request(request, address)
2504
except Exception:
1596
except:
2505
1597
self.handle_error(request, address)
2506
1598
self.close_request(request)
2507
1599
2508
1600
def process_request(self, request, address):
2509
1601
"""Start a new process to process the request."""
2510
proc = multiprocessing.Process(target=self.sub_process_main,
2511
args=(request, address))
1602
proc = multiprocessing.Process(target = self.sub_process_main,
1603
args = (request,
1604
address))
2512
1605
proc.start()
2513
1606
return proc
2514
1607
2515
1608
2516
class MultiprocessingMixInWithPipe(MultiprocessingMixIn):
1609
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2517
1610
""" adds a pipe to the MixIn """
2518
2519
1611
def process_request(self, request, client_address):
2520
1612
"""Overrides and wraps the original process_request().
2521
1613
2522
1614
This function creates a new pipe in self.pipe
2523
1615
"""
2524
1616
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2525
1617
2526
1618
proc = MultiprocessingMixIn.process_request(self, request,
2527
1619
client_address)
2528
1620
self.child_pipe.close()
2529
1621
self.add_pipe(parent_pipe, proc)
2530
1622
2531
1623
def add_pipe(self, parent_pipe, proc):
2532
1624
"""Dummy function; override as necessary"""
2533
raise NotImplementedError()
1625
raise NotImplementedError
2534
1626
2535
1627
2536
1628
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2537
socketserver.TCPServer):
1629
socketserver.TCPServer, object):
2538
1630
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
2539
1631
2540
1632
Attributes:
2541
1633
enabled: Boolean; whether this server is activated yet
2542
1634
interface: None or a network interface name (string)
2543
1635
use_ipv6: Boolean; to use IPv6 or not
2544
1636
"""
2545
2546
1637
def __init__(self, server_address, RequestHandlerClass,
2547
interface=None,
2548
use_ipv6=True,
2549
socketfd=None):
2550
"""If socketfd is set, use that file descriptor instead of
2551
creating a new one with socket.socket().
2552
"""
1638
interface=None, use_ipv6=True):
2553
1639
self.interface = interface
2554
1640
if use_ipv6:
2555
1641
self.address_family = socket.AF_INET6
2556
if socketfd is not None:
2557
# Save the file descriptor
2558
self.socketfd = socketfd
2559
# Save the original socket.socket() function
2560
self.socket_socket = socket.socket
2561
2562
# To implement --socket, we monkey patch socket.socket.
2563
#
2564
# (When socketserver.TCPServer is a new-style class, we
2565
# could make self.socket into a property instead of monkey
2566
# patching socket.socket.)
2567
#
2568
# Create a one-time-only replacement for socket.socket()
2569
@functools.wraps(socket.socket)
2570
def socket_wrapper(*args, **kwargs):
2571
# Restore original function so subsequent calls are
2572
# not affected.
2573
socket.socket = self.socket_socket
2574
del self.socket_socket
2575
# This time only, return a new socket object from the
2576
# saved file descriptor.
2577
return socket.fromfd(self.socketfd, *args, **kwargs)
2578
# Replace socket.socket() function with wrapper
2579
socket.socket = socket_wrapper
2580
# The socketserver.TCPServer.__init__ will call
2581
# socket.socket(), which might be our replacement,
2582
# socket_wrapper(), if socketfd was set.
2583
1642
socketserver.TCPServer.__init__(self, server_address,
2584
1643
RequestHandlerClass)
2585
2586
1644
def server_bind(self):
2587
1645
"""This overrides the normal server_bind() function
2588
1646
to bind to an interface if one was specified, and also NOT to
2589
1647
bind to an address or port if they were not specified."""
2590
global SO_BINDTODEVICE
2591
1648
if self.interface is not None:
2592
1649
if SO_BINDTODEVICE is None:
2593
# Fall back to a hard-coded value which seems to be
2594
# common enough.
2595
logger.warning("SO_BINDTODEVICE not found, trying 25")
2596
SO_BINDTODEVICE = 25
2597
try:
2598
self.socket.setsockopt(
2599
socket.SOL_SOCKET, SO_BINDTODEVICE,
2600
(self.interface + "\0").encode("utf-8"))
2601
except socket.error as error:
2602
if error.errno == errno.EPERM:
2603
logger.error("No permission to bind to"
2604
" interface %s", self.interface)
2605
elif error.errno == errno.ENOPROTOOPT:
2606
logger.error("SO_BINDTODEVICE not available;"
2607
" cannot bind to interface %s",
2608
self.interface)
2609
elif error.errno == errno.ENODEV:
2610
logger.error("Interface %s does not exist,"
2611
" cannot bind", self.interface)
2612
else:
2613
raise
1650
logger.error("SO_BINDTODEVICE does not exist;"
1651
" cannot bind to interface %s",
1652
self.interface)
1653
else:
1654
try:
1655
self.socket.setsockopt(socket.SOL_SOCKET,
1656
SO_BINDTODEVICE,
1657
str(self.interface
1658
+ '\0'))
1659
except socket.error as error:
1660
if error[0] == errno.EPERM:
1661
logger.error("No permission to"
1662
" bind to interface %s",
1663
self.interface)
1664
elif error[0] == errno.ENOPROTOOPT:
1665
logger.error("SO_BINDTODEVICE not available;"
1666
" cannot bind to interface %s",
1667
self.interface)
1668
else:
1669
raise
2614
1670
# Only bind(2) the socket if we really need to.
2615
1671
if self.server_address[0] or self.server_address[1]:
2616
if self.server_address[1]:
2617
self.allow_reuse_address = True
2618
1672
if not self.server_address[0]:
2619
1673
if self.address_family == socket.AF_INET6:
2620
any_address = "::" # in6addr_any
1674
any_address = "::" # in6addr_any
2621
1675
else:
2622
any_address = "0.0.0.0" # INADDR_ANY
1676
any_address = socket.INADDR_ANY
2623
1677
self.server_address = (any_address,
2624
1678
self.server_address[1])
2625
1679
elif not self.server_address[1]:
2626
self.server_address = (self.server_address[0], 0)
1680
self.server_address = (self.server_address[0],
1681
0)
2627
1682
# if self.interface:
2628
1683
# self.server_address = (self.server_address[0],
2629
1684
# 0, # port
2635
1690
2636
1691
class MandosServer(IPv6_TCPServer):
2637
1692
"""Mandos server.
2638
1693
2639
1694
Attributes:
2640
1695
clients: set of Client objects
2641
1696
gnutls_priority GnuTLS priority string
2642
1697
use_dbus: Boolean; to emit D-Bus signals or not
2643
2644
Assumes a GLib.MainLoop event loop.
1698
1699
Assumes a gobject.MainLoop event loop.
2645
1700
"""
2646
2647
1701
def __init__(self, server_address, RequestHandlerClass,
2648
interface=None,
2649
use_ipv6=True,
2650
clients=None,
2651
gnutls_priority=None,
2652
use_dbus=True,
2653
socketfd=None):
1702
interface=None, use_ipv6=True, clients=None,
1703
gnutls_priority=None, use_dbus=True):
2654
1704
self.enabled = False
2655
1705
self.clients = clients
2656
1706
if self.clients is None:
2659
1709
self.gnutls_priority = gnutls_priority
2660
1710
IPv6_TCPServer.__init__(self, server_address,
2661
1711
RequestHandlerClass,
2662
interface=interface,
2663
use_ipv6=use_ipv6,
2664
socketfd=socketfd)
2665
1712
interface = interface,
1713
use_ipv6 = use_ipv6)
2666
1714
def server_activate(self):
2667
1715
if self.enabled:
2668
1716
return socketserver.TCPServer.server_activate(self)
2669
1717
2670
1718
def enable(self):
2671
1719
self.enabled = True
2672
1720
2673
1721
def add_pipe(self, parent_pipe, proc):
2674
1722
# Call "handle_ipc" for both data and EOF events
2675
GLib.io_add_watch(
2676
parent_pipe.fileno(),
2677
GLib.IO_IN | GLib.IO_HUP,
2678
functools.partial(self.handle_ipc,
2679
parent_pipe=parent_pipe,
2680
proc=proc))
2681
2682
def handle_ipc(self, source, condition,
2683
parent_pipe=None,
2684
proc=None,
2685
client_object=None):
1723
gobject.io_add_watch(parent_pipe.fileno(),
1724
gobject.IO_IN | gobject.IO_HUP,
1725
functools.partial(self.handle_ipc,
1726
parent_pipe =
1727
parent_pipe,
1728
proc = proc))
1729
1730
def handle_ipc(self, source, condition, parent_pipe=None,
1731
proc = None, client_object=None):
1732
condition_names = {
1733
gobject.IO_IN: "IN", # There is data to read.
1734
gobject.IO_OUT: "OUT", # Data can be written (without
1735
# blocking).
1736
gobject.IO_PRI: "PRI", # There is urgent data to read.
1737
gobject.IO_ERR: "ERR", # Error condition.
1738
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1739
# broken, usually for pipes and
1740
# sockets).
1741
}
1742
conditions_string = ' | '.join(name
1743
for cond, name in
1744
condition_names.iteritems()
1745
if cond & condition)
2686
1746
# error, or the other end of multiprocessing.Pipe has closed
2687
if condition & (GLib.IO_ERR | GLib.IO_HUP):
1747
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2688
1748
# Wait for other process to exit
2689
1749
proc.join()
2690
1750
return False
2691
1751
2692
1752
# Read a request from the child
2693
1753
request = parent_pipe.recv()
2694
1754
command = request[0]
2695
1755
2696
1756
if command == 'init':
2697
key_id = request[1].decode("ascii")
2698
fpr = request[2].decode("ascii")
2699
address = request[3]
2700
2701
for c in self.clients.values():
2702
if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2703
continue
2704
if key_id and c.key_id == key_id:
2705
client = c
2706
break
2707
if fpr and c.fingerprint == fpr:
1757
fpr = request[1]
1758
address = request[2]
1759
1760
for c in self.clients.itervalues():
1761
if c.fingerprint == fpr:
2708
1762
client = c
2709
1763
break
2710
1764
else:
2711
logger.info("Client not found for key ID: %s, address"
2712
": %s", key_id or fpr, address)
1765
logger.info("Client not found for fingerprint: %s, ad"
1766
"dress: %s", fpr, address)
2713
1767
if self.use_dbus:
2714
1768
# Emit D-Bus signal
2715
mandos_dbus_service.ClientNotFound(key_id or fpr,
1769
mandos_dbus_service.ClientNotFound(fpr,
2716
1770
address[0])
2717
1771
parent_pipe.send(False)
2718
1772
return False
2719
2720
GLib.io_add_watch(
2721
parent_pipe.fileno(),
2722
GLib.IO_IN | GLib.IO_HUP,
2723
functools.partial(self.handle_ipc,
2724
parent_pipe=parent_pipe,
2725
proc=proc,
2726
client_object=client))
1773
1774
gobject.io_add_watch(parent_pipe.fileno(),
1775
gobject.IO_IN | gobject.IO_HUP,
1776
functools.partial(self.handle_ipc,
1777
parent_pipe =
1778
parent_pipe,
1779
proc = proc,
1780
client_object =
1781
client))
2727
1782
parent_pipe.send(True)
2728
1783
# remove the old hook in favor of the new above hook on
2729
1784
# same fileno
2732
1787
funcname = request[1]
2733
1788
args = request[2]
2734
1789
kwargs = request[3]
2735
1790
2736
1791
parent_pipe.send(('data', getattr(client_object,
2737
1792
funcname)(*args,
2738
**kwargs)))
2739
1793
**kwargs)))
1794
2740
1795
if command == 'getattr':
2741
1796
attrname = request[1]
2742
if isinstance(client_object.__getattribute__(attrname),
2743
collections.Callable):
2744
parent_pipe.send(('function', ))
1797
if callable(client_object.__getattribute__(attrname)):
1798
parent_pipe.send(('function',))
2745
1799
else:
2746
parent_pipe.send((
2747
'data', client_object.__getattribute__(attrname)))
2748
1800
parent_pipe.send(('data', client_object
1801
.__getattribute__(attrname)))
1802
2749
1803
if command == 'setattr':
2750
1804
attrname = request[1]
2751
1805
value = request[2]
2752
1806
setattr(client_object, attrname, value)
2753
1807
2754
1808
return True
2755
1809
2756
1810
2757
def rfc3339_duration_to_delta(duration):
2758
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2759
2760
>>> rfc3339_duration_to_delta("P7D")
2761
datetime.timedelta(7)
2762
>>> rfc3339_duration_to_delta("PT60S")
2763
datetime.timedelta(0, 60)
2764
>>> rfc3339_duration_to_delta("PT60M")
2765
datetime.timedelta(0, 3600)
2766
>>> rfc3339_duration_to_delta("PT24H")
2767
datetime.timedelta(1)
2768
>>> rfc3339_duration_to_delta("P1W")
2769
datetime.timedelta(7)
2770
>>> rfc3339_duration_to_delta("PT5M30S")
2771
datetime.timedelta(0, 330)
2772
>>> rfc3339_duration_to_delta("P1DT3M20S")
2773
datetime.timedelta(1, 200)
2774
"""
2775
2776
# Parsing an RFC 3339 duration with regular expressions is not
2777
# possible - there would have to be multiple places for the same
2778
# values, like seconds. The current code, while more esoteric, is
2779
# cleaner without depending on a parsing library. If Python had a
2780
# built-in library for parsing we would use it, but we'd like to
2781
# avoid excessive use of external libraries.
2782
2783
# New type for defining tokens, syntax, and semantics all-in-one
2784
Token = collections.namedtuple("Token", (
2785
"regexp", # To match token; if "value" is not None, must have
2786
# a "group" containing digits
2787
"value", # datetime.timedelta or None
2788
"followers")) # Tokens valid after this token
2789
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2790
# the "duration" ABNF definition in RFC 3339, Appendix A.
2791
token_end = Token(re.compile(r"$"), None, frozenset())
2792
token_second = Token(re.compile(r"(\d+)S"),
2793
datetime.timedelta(seconds=1),
2794
frozenset((token_end, )))
2795
token_minute = Token(re.compile(r"(\d+)M"),
2796
datetime.timedelta(minutes=1),
2797
frozenset((token_second, token_end)))
2798
token_hour = Token(re.compile(r"(\d+)H"),
2799
datetime.timedelta(hours=1),
2800
frozenset((token_minute, token_end)))
2801
token_time = Token(re.compile(r"T"),
2802
None,
2803
frozenset((token_hour, token_minute,
2804
token_second)))
2805
token_day = Token(re.compile(r"(\d+)D"),
2806
datetime.timedelta(days=1),
2807
frozenset((token_time, token_end)))
2808
token_month = Token(re.compile(r"(\d+)M"),
2809
datetime.timedelta(weeks=4),
2810
frozenset((token_day, token_end)))
2811
token_year = Token(re.compile(r"(\d+)Y"),
2812
datetime.timedelta(weeks=52),
2813
frozenset((token_month, token_end)))
2814
token_week = Token(re.compile(r"(\d+)W"),
2815
datetime.timedelta(weeks=1),
2816
frozenset((token_end, )))
2817
token_duration = Token(re.compile(r"P"), None,
2818
frozenset((token_year, token_month,
2819
token_day, token_time,
2820
token_week)))
2821
# Define starting values:
2822
# Value so far
2823
value = datetime.timedelta()
2824
found_token = None
2825
# Following valid tokens
2826
followers = frozenset((token_duration, ))
2827
# String left to parse
2828
s = duration
2829
# Loop until end token is found
2830
while found_token is not token_end:
2831
# Search for any currently valid tokens
2832
for token in followers:
2833
match = token.regexp.match(s)
2834
if match is not None:
2835
# Token found
2836
if token.value is not None:
2837
# Value found, parse digits
2838
factor = int(match.group(1), 10)
2839
# Add to value so far
2840
value += factor * token.value
2841
# Strip token from string
2842
s = token.regexp.sub("", s, 1)
2843
# Go to found token
2844
found_token = token
2845
# Set valid next tokens
2846
followers = found_token.followers
2847
break
2848
else:
2849
# No currently valid tokens were found
2850
raise ValueError("Invalid RFC 3339 duration: {!r}"
2851
.format(duration))
2852
# End token found
2853
return value
2854
2855
2856
1811
def string_to_delta(interval):
2857
1812
"""Parse a string and return a datetime.timedelta
2858
1813
2859
1814
>>> string_to_delta('7d')
2860
1815
datetime.timedelta(7)
2861
1816
>>> string_to_delta('60s')
2869
1824
>>> string_to_delta('5m 30s')
2870
1825
datetime.timedelta(0, 330)
2871
1826
"""
2872
2873
try:
2874
return rfc3339_duration_to_delta(interval)
2875
except ValueError:
2876
pass
2877
2878
1827
timevalue = datetime.timedelta(0)
2879
1828
for s in interval.split():
2880
1829
try:
2881
suffix = s[-1]
1830
suffix = unicode(s[-1])
2882
1831
value = int(s[:-1])
2883
1832
if suffix == "d":
2884
1833
delta = datetime.timedelta(value)
2891
1840
elif suffix == "w":
2892
1841
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2893
1842
else:
2894
raise ValueError("Unknown suffix {!r}".format(suffix))
2895
except IndexError as e:
1843
raise ValueError("Unknown suffix %r" % suffix)
1844
except (ValueError, IndexError) as e:
2896
1845
raise ValueError(*(e.args))
2897
1846
timevalue += delta
2898
1847
return timevalue
2899
1848
2900
1849
2901
def daemon(nochdir=False, noclose=False):
1850
def if_nametoindex(interface):
1851
"""Call the C function if_nametoindex(), or equivalent
1852
1853
Note: This function cannot accept a unicode string."""
1854
global if_nametoindex
1855
try:
1856
if_nametoindex = (ctypes.cdll.LoadLibrary
1857
(ctypes.util.find_library("c"))
1858
.if_nametoindex)
1859
except (OSError, AttributeError):
1860
logger.warning("Doing if_nametoindex the hard way")
1861
def if_nametoindex(interface):
1862
"Get an interface index the hard way, i.e. using fcntl()"
1863
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1864
with contextlib.closing(socket.socket()) as s:
1865
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1866
struct.pack(str("16s16x"),
1867
interface))
1868
interface_index = struct.unpack(str("I"),
1869
ifreq[16:20])[0]
1870
return interface_index
1871
return if_nametoindex(interface)
1872
1873
1874
def daemon(nochdir = False, noclose = False):
2902
1875
"""See daemon(3). Standard BSD Unix function.
2903
1876
2904
1877
This should really exist as os.daemon, but it doesn't (yet)."""
2905
1878
if os.fork():
2906
1879
sys.exit()
2911
1884
sys.exit()
2912
1885
if not noclose:
2913
1886
# Close all standard open file descriptors
2914
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1887
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2915
1888
if not stat.S_ISCHR(os.fstat(null).st_mode):
2916
1889
raise OSError(errno.ENODEV,
2917
"{} not a character device"
2918
.format(os.devnull))
1890
"%s not a character device"
1891
% os.path.devnull)
2919
1892
os.dup2(null, sys.stdin.fileno())
2920
1893
os.dup2(null, sys.stdout.fileno())
2921
1894
os.dup2(null, sys.stderr.fileno())
2924
1897
2925
1898
2926
1899
def main():
2927
1900
2928
1901
##################################################################
2929
1902
# Parsing of options, both command line and config file
2930
1903
2931
1904
parser = argparse.ArgumentParser()
2932
1905
parser.add_argument("-v", "--version", action="version",
2933
version="%(prog)s {}".format(version),
1906
version = "%%(prog)s %s" % version,
2934
1907
help="show version number and exit")
2935
1908
parser.add_argument("-i", "--interface", metavar="IF",
2936
1909
help="Bind to interface IF")
2942
1915
help="Run self-test")
2943
1916
parser.add_argument("--debug", action="store_true",
2944
1917
help="Debug mode; run in foreground and log"
2945
" to terminal", default=None)
1918
" to terminal")
2946
1919
parser.add_argument("--debuglevel", metavar="LEVEL",
2947
1920
help="Debug level for stdout output")
2948
1921
parser.add_argument("--priority", help="GnuTLS"
2955
1928
" files")
2956
1929
parser.add_argument("--no-dbus", action="store_false",
2957
1930
dest="use_dbus", help="Do not provide D-Bus"
2958
" system bus interface", default=None)
1931
" system bus interface")
2959
1932
parser.add_argument("--no-ipv6", action="store_false",
2960
dest="use_ipv6", help="Do not use IPv6",
2961
default=None)
1933
dest="use_ipv6", help="Do not use IPv6")
2962
1934
parser.add_argument("--no-restore", action="store_false",
2963
dest="restore", help="Do not restore stored"
2964
" state", default=None)
2965
parser.add_argument("--socket", type=int,
2966
help="Specify a file descriptor to a network"
2967
" socket to use instead of creating one")
2968
parser.add_argument("--statedir", metavar="DIR",
2969
help="Directory to save/restore state in")
2970
parser.add_argument("--foreground", action="store_true",
2971
help="Run in foreground", default=None)
2972
parser.add_argument("--no-zeroconf", action="store_false",
2973
dest="zeroconf", help="Do not use Zeroconf",
2974
default=None)
1935
dest="restore",
1936
help="Do not restore stored state",
1937
default=True)
2975
1938
2976
1939
options = parser.parse_args()
2977
1940
2978
1941
if options.check:
2979
1942
import doctest
2980
fail_count, test_count = doctest.testmod()
2981
sys.exit(os.EX_OK if fail_count == 0 else 1)
2982
1943
doctest.testmod()
1944
sys.exit()
1945
2983
1946
# Default values for config file for server-global settings
2984
if gnutls.has_rawpk:
2985
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
2986
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
2987
else:
2988
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2989
":+SIGN-DSA-SHA256")
2990
server_defaults = {"interface": "",
2991
"address": "",
2992
"port": "",
2993
"debug": "False",
2994
"priority": priority,
2995
"servicename": "Mandos",
2996
"use_dbus": "True",
2997
"use_ipv6": "True",
2998
"debuglevel": "",
2999
"restore": "True",
3000
"socket": "",
3001
"statedir": "/var/lib/mandos",
3002
"foreground": "False",
3003
"zeroconf": "True",
3004
}
3005
del priority
3006
1947
server_defaults = { "interface": "",
1948
"address": "",
1949
"port": "",
1950
"debug": "False",
1951
"priority":
1952
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1953
"servicename": "Mandos",
1954
"use_dbus": "True",
1955
"use_ipv6": "True",
1956
"debuglevel": "",
1957
}
1958
3007
1959
# Parse config file for server-global settings
3008
server_config = configparser.ConfigParser(server_defaults)
1960
server_config = configparser.SafeConfigParser(server_defaults)
3009
1961
del server_defaults
3010
server_config.read(os.path.join(options.configdir, "mandos.conf"))
3011
# Convert the ConfigParser object to a dict
1962
server_config.read(os.path.join(options.configdir,
1963
"mandos.conf"))
1964
# Convert the SafeConfigParser object to a dict
3012
1965
server_settings = server_config.defaults()
3013
1966
# Use the appropriate methods on the non-string config options
3014
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3015
"foreground", "zeroconf"):
1967
for option in ("debug", "use_dbus", "use_ipv6"):
3016
1968
server_settings[option] = server_config.getboolean("DEFAULT",
3017
1969
option)
3018
1970
if server_settings["port"]:
3019
1971
server_settings["port"] = server_config.getint("DEFAULT",
3020
1972
"port")
3021
if server_settings["socket"]:
3022
server_settings["socket"] = server_config.getint("DEFAULT",
3023
"socket")
3024
# Later, stdin will, and stdout and stderr might, be dup'ed
3025
# over with an opened os.devnull. But we don't want this to
3026
# happen with a supplied network socket.
3027
if 0 <= server_settings["socket"] <= 2:
3028
server_settings["socket"] = os.dup(server_settings
3029
["socket"])
3030
1973
del server_config
3031
1974
3032
1975
# Override the settings from the config file with command line
3033
1976
# options, if set.
3034
1977
for option in ("interface", "address", "port", "debug",
3035
"priority", "servicename", "configdir", "use_dbus",
3036
"use_ipv6", "debuglevel", "restore", "statedir",
3037
"socket", "foreground", "zeroconf"):
1978
"priority", "servicename", "configdir",
1979
"use_dbus", "use_ipv6", "debuglevel", "restore"):
3038
1980
value = getattr(options, option)
3039
1981
if value is not None:
3040
1982
server_settings[option] = value
3041
1983
del options
3042
1984
# Force all strings to be unicode
3043
1985
for option in server_settings.keys():
3044
if isinstance(server_settings[option], bytes):
3045
server_settings[option] = (server_settings[option]
3046
.decode("utf-8"))
3047
# Force all boolean options to be boolean
3048
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3049
"foreground", "zeroconf"):
3050
server_settings[option] = bool(server_settings[option])
3051
# Debug implies foreground
3052
if server_settings["debug"]:
3053
server_settings["foreground"] = True
1986
if type(server_settings[option]) is str:
1987
server_settings[option] = unicode(server_settings[option])
3054
1988
# Now we have our good server settings in "server_settings"
3055
1989
3056
1990
##################################################################
3057
3058
if (not server_settings["zeroconf"]
3059
and not (server_settings["port"]
3060
or server_settings["socket"] != "")):
3061
parser.error("Needs port or socket to work without Zeroconf")
3062
1991
3063
1992
# For convenience
3064
1993
debug = server_settings["debug"]
3065
1994
debuglevel = server_settings["debuglevel"]
3066
1995
use_dbus = server_settings["use_dbus"]
3067
1996
use_ipv6 = server_settings["use_ipv6"]
3068
stored_state_path = os.path.join(server_settings["statedir"],
3069
stored_state_file)
3070
foreground = server_settings["foreground"]
3071
zeroconf = server_settings["zeroconf"]
3072
3073
if debug:
3074
initlogger(debug, logging.DEBUG)
3075
else:
3076
if not debuglevel:
3077
initlogger(debug)
3078
else:
3079
level = getattr(logging, debuglevel.upper())
3080
initlogger(debug, level)
3081
1997
3082
1998
if server_settings["servicename"] != "Mandos":
3083
syslogger.setFormatter(
3084
logging.Formatter('Mandos ({}) [%(process)d]:'
3085
' %(levelname)s: %(message)s'.format(
3086
server_settings["servicename"])))
3087
1999
syslogger.setFormatter(logging.Formatter
2000
('Mandos (%s) [%%(process)d]:'
2001
' %%(levelname)s: %%(message)s'
2002
% server_settings["servicename"]))
2003
3088
2004
# Parse config file with clients
3089
client_config = configparser.ConfigParser(Client.client_defaults)
2005
client_defaults = { "timeout": "5m",
2006
"extended_timeout": "15m",
2007
"interval": "2m",
2008
"checker": "fping -q -- %%(host)s",
2009
"host": "",
2010
"approval_delay": "0s",
2011
"approval_duration": "1s",
2012
}
2013
client_config = configparser.SafeConfigParser(client_defaults)
3090
2014
client_config.read(os.path.join(server_settings["configdir"],
3091
2015
"clients.conf"))
3092
2016
3093
2017
global mandos_dbus_service
3094
2018
mandos_dbus_service = None
3095
3096
socketfd = None
3097
if server_settings["socket"] != "":
3098
socketfd = server_settings["socket"]
3099
tcp_server = MandosServer(
3100
(server_settings["address"], server_settings["port"]),
3101
ClientHandler,
3102
interface=(server_settings["interface"] or None),
3103
use_ipv6=use_ipv6,
3104
gnutls_priority=server_settings["priority"],
3105
use_dbus=use_dbus,
3106
socketfd=socketfd)
3107
if not foreground:
3108
pidfilename = "/run/mandos.pid"
3109
if not os.path.isdir("/run/."):
3110
pidfilename = "/var/run/mandos.pid"
3111
pidfile = None
3112
try:
3113
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3114
except IOError as e:
3115
logger.error("Could not open file %r", pidfilename,
3116
exc_info=e)
3117
3118
for name, group in (("_mandos", "_mandos"),
3119
("mandos", "mandos"),
3120
("nobody", "nogroup")):
3121
try:
3122
uid = pwd.getpwnam(name).pw_uid
3123
gid = pwd.getpwnam(group).pw_gid
3124
break
2019
2020
tcp_server = MandosServer((server_settings["address"],
2021
server_settings["port"]),
2022
ClientHandler,
2023
interface=(server_settings["interface"]
2024
or None),
2025
use_ipv6=use_ipv6,
2026
gnutls_priority=
2027
server_settings["priority"],
2028
use_dbus=use_dbus)
2029
if not debug:
2030
pidfilename = "/var/run/mandos.pid"
2031
try:
2032
pidfile = open(pidfilename, "w")
2033
except IOError:
2034
logger.error("Could not open file %r", pidfilename)
2035
2036
try:
2037
uid = pwd.getpwnam("_mandos").pw_uid
2038
gid = pwd.getpwnam("_mandos").pw_gid
2039
except KeyError:
2040
try:
2041
uid = pwd.getpwnam("mandos").pw_uid
2042
gid = pwd.getpwnam("mandos").pw_gid
3125
2043
except KeyError:
3126
continue
3127
else:
3128
uid = 65534
3129
gid = 65534
2044
try:
2045
uid = pwd.getpwnam("nobody").pw_uid
2046
gid = pwd.getpwnam("nobody").pw_gid
2047
except KeyError:
2048
uid = 65534
2049
gid = 65534
3130
2050
try:
3131
2051
os.setgid(gid)
3132
2052
os.setuid(uid)
3133
if debug:
3134
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3135
gid))
3136
2053
except OSError as error:
3137
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3138
.format(uid, gid, os.strerror(error.errno)))
3139
if error.errno != errno.EPERM:
3140
raise
3141
2054
if error[0] != errno.EPERM:
2055
raise error
2056
2057
if not debug and not debuglevel:
2058
logger.setLevel(logging.WARNING)
2059
if debuglevel:
2060
level = getattr(logging, debuglevel.upper())
2061
logger.setLevel(level)
2062
3142
2063
if debug:
2064
logger.setLevel(logging.DEBUG)
3143
2065
# Enable all possible GnuTLS debugging
3144
2066
3145
2067
# "Use a log level over 10 to enable all debugging options."
3146
2068
# - GnuTLS manual
3147
gnutls.global_set_log_level(11)
3148
3149
@gnutls.log_func
2069
gnutls.library.functions.gnutls_global_set_log_level(11)
2070
2071
@gnutls.library.types.gnutls_log_func
3150
2072
def debug_gnutls(level, string):
3151
2073
logger.debug("GnuTLS: %s", string[:-1])
3152
3153
gnutls.global_set_log_function(debug_gnutls)
3154
2074
2075
(gnutls.library.functions
2076
.gnutls_global_set_log_function(debug_gnutls))
2077
3155
2078
# Redirect stdin so all checkers get /dev/null
3156
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2079
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3157
2080
os.dup2(null, sys.stdin.fileno())
3158
2081
if null > 2:
3159
2082
os.close(null)
3160
2083
else:
2084
# No console logging
2085
logger.removeHandler(console)
2086
3161
2087
# Need to fork before connecting to D-Bus
3162
if not foreground:
2088
if not debug:
3163
2089
# Close all input and output, do double fork, etc.
3164
2090
daemon()
3165
3166
if gi.version_info < (3, 10, 2):
3167
# multiprocessing will use threads, so before we use GLib we
3168
# need to inform GLib that threads will be used.
3169
GLib.threads_init()
3170
2091
3171
2092
global main_loop
3172
2093
# From the Avahi example code
3173
DBusGMainLoop(set_as_default=True)
3174
main_loop = GLib.MainLoop()
2094
DBusGMainLoop(set_as_default=True )
2095
main_loop = gobject.MainLoop()
3175
2096
bus = dbus.SystemBus()
3176
2097
# End of Avahi example code
3177
2098
if use_dbus:
3178
2099
try:
3179
2100
bus_name = dbus.service.BusName("se.recompile.Mandos",
3180
bus,
3181
do_not_queue=True)
3182
old_bus_name = dbus.service.BusName(
3183
"se.bsnet.fukt.Mandos", bus,
3184
do_not_queue=True)
3185
except dbus.exceptions.DBusException as e:
3186
logger.error("Disabling D-Bus:", exc_info=e)
2101
bus, do_not_queue=True)
2102
old_bus_name = (dbus.service.BusName
2103
("se.bsnet.fukt.Mandos", bus,
2104
do_not_queue=True))
2105
except dbus.exceptions.NameExistsException as e:
2106
logger.error(unicode(e) + ", disabling D-Bus")
3187
2107
use_dbus = False
3188
2108
server_settings["use_dbus"] = False
3189
2109
tcp_server.use_dbus = False
3190
if zeroconf:
3191
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3192
service = AvahiServiceToSyslog(
3193
name=server_settings["servicename"],
3194
servicetype="_mandos._tcp",
3195
protocol=protocol,
3196
bus=bus)
3197
if server_settings["interface"]:
3198
service.interface = if_nametoindex(
3199
server_settings["interface"].encode("utf-8"))
3200
2110
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2111
service = AvahiServiceToSyslog(name =
2112
server_settings["servicename"],
2113
servicetype = "_mandos._tcp",
2114
protocol = protocol, bus = bus)
2115
if server_settings["interface"]:
2116
service.interface = (if_nametoindex
2117
(str(server_settings["interface"])))
2118
3201
2119
global multiprocessing_manager
3202
2120
multiprocessing_manager = multiprocessing.Manager()
3203
2121
3204
2122
client_class = Client
3205
2123
if use_dbus:
3206
client_class = functools.partial(ClientDBus, bus=bus)
3207
3208
client_settings = Client.config_parser(client_config)
2124
client_class = functools.partial(ClientDBusTransitional,
2125
bus = bus)
2126
2127
special_settings = {
2128
# Some settings need to be accessd by special methods;
2129
# booleans need .getboolean(), etc. Here is a list of them:
2130
"approved_by_default":
2131
lambda section:
2132
client_config.getboolean(section, "approved_by_default"),
2133
}
2134
# Construct a new dict of client settings of this form:
2135
# { client_name: {setting_name: value, ...}, ...}
2136
# with exceptions for any special settings as defined above
2137
client_settings = dict((clientname,
2138
dict((setting,
2139
(value if
2140
setting not in special_settings
2141
else special_settings[setting]
2142
(clientname)))
2143
for setting, value
2144
in client_config.items(clientname)))
2145
for clientname in client_config.sections())
2146
3209
2147
old_client_settings = {}
3210
clients_data = {}
3211
3212
# This is used to redirect stdout and stderr for checker processes
3213
global wnull
3214
wnull = open(os.devnull, "w") # A writable /dev/null
3215
# Only used if server is running in foreground but not in debug
3216
# mode
3217
if debug or not foreground:
3218
wnull.close()
3219
3220
# Get client data and settings from last running state.
2148
clients_data = []
2149
2150
# Get client data and settings from last running state.
3221
2151
if server_settings["restore"]:
3222
2152
try:
3223
2153
with open(stored_state_path, "rb") as stored_state:
3224
if sys.version_info.major == 2:
3225
clients_data, old_client_settings = pickle.load(
3226
stored_state)
3227
else:
3228
bytes_clients_data, bytes_old_client_settings = (
3229
pickle.load(stored_state, encoding="bytes"))
3230
# Fix bytes to strings
3231
# clients_data
3232
# .keys()
3233
clients_data = {(key.decode("utf-8")
3234
if isinstance(key, bytes)
3235
else key): value
3236
for key, value in
3237
bytes_clients_data.items()}
3238
del bytes_clients_data
3239
for key in clients_data:
3240
value = {(k.decode("utf-8")
3241
if isinstance(k, bytes) else k): v
3242
for k, v in
3243
clients_data[key].items()}
3244
clients_data[key] = value
3245
# .client_structure
3246
value["client_structure"] = [
3247
(s.decode("utf-8")
3248
if isinstance(s, bytes)
3249
else s) for s in
3250
value["client_structure"]]
3251
# .name & .host
3252
for k in ("name", "host"):
3253
if isinstance(value[k], bytes):
3254
value[k] = value[k].decode("utf-8")
3255
if "key_id" not in value:
3256
value["key_id"] = ""
3257
elif "fingerprint" not in value:
3258
value["fingerprint"] = ""
3259
# old_client_settings
3260
# .keys()
3261
old_client_settings = {
3262
(key.decode("utf-8")
3263
if isinstance(key, bytes)
3264
else key): value
3265
for key, value in
3266
bytes_old_client_settings.items()}
3267
del bytes_old_client_settings
3268
# .host
3269
for value in old_client_settings.values():
3270
if isinstance(value["host"], bytes):
3271
value["host"] = (value["host"]
3272
.decode("utf-8"))
2154
clients_data, old_client_settings = (
2155
pickle.load(stored_state))
3273
2156
os.remove(stored_state_path)
3274
2157
except IOError as e:
3275
if e.errno == errno.ENOENT:
3276
logger.warning("Could not load persistent state:"
3277
" {}".format(os.strerror(e.errno)))
3278
else:
3279
logger.critical("Could not load persistent state:",
3280
exc_info=e)
2158
logger.warning("Could not load persistant state: {0}"
2159
.format(e))
2160
if e.errno != errno.ENOENT:
3281
2161
raise
3282
except EOFError as e:
3283
logger.warning("Could not load persistent state: "
3284
"EOFError:",
3285
exc_info=e)
3286
3287
with PGPEngine() as pgp:
3288
for client_name, client in clients_data.items():
3289
# Skip removed clients
3290
if client_name not in client_settings:
3291
continue
3292
3293
# Decide which value to use after restoring saved state.
3294
# We have three different values: Old config file,
3295
# new config file, and saved state.
3296
# New config value takes precedence if it differs from old
3297
# config value, otherwise use saved state.
3298
for name, value in client_settings[client_name].items():
3299
try:
3300
# For each value in new config, check if it
3301
# differs from the old config value (Except for
3302
# the "secret" attribute)
3303
if (name != "secret"
3304
and (value !=
3305
old_client_settings[client_name][name])):
3306
client[name] = value
3307
except KeyError:
3308
pass
3309
3310
# Clients who has passed its expire date can still be
3311
# enabled if its last checker was successful. A Client
3312
# whose checker succeeded before we stored its state is
3313
# assumed to have successfully run all checkers during
3314
# downtime.
3315
if client["enabled"]:
3316
if datetime.datetime.utcnow() >= client["expires"]:
3317
if not client["last_checked_ok"]:
3318
logger.warning(
3319
"disabling client {} - Client never "
3320
"performed a successful checker".format(
3321
client_name))
3322
client["enabled"] = False
3323
elif client["last_checker_status"] != 0:
3324
logger.warning(
3325
"disabling client {} - Client last"
3326
" checker failed with error code"
3327
" {}".format(
3328
client_name,
3329
client["last_checker_status"]))
3330
client["enabled"] = False
3331
else:
3332
client["expires"] = (
3333
datetime.datetime.utcnow()
3334
+ client["timeout"])
3335
logger.debug("Last checker succeeded,"
3336
" keeping {} enabled".format(
3337
client_name))
2162
2163
for client in clients_data:
2164
client_name = client["name"]
2165
2166
# Decide which value to use after restoring saved state.
2167
# We have three different values: Old config file,
2168
# new config file, and saved state.
2169
# New config value takes precedence if it differs from old
2170
# config value, otherwise use saved state.
2171
for name, value in client_settings[client_name].items():
3338
2172
try:
3339
client["secret"] = pgp.decrypt(
3340
client["encrypted_secret"],
3341
client_settings[client_name]["secret"])
3342
except PGPError:
3343
# If decryption fails, we use secret from new settings
3344
logger.debug("Failed to decrypt {} old secret".format(
3345
client_name))
3346
client["secret"] = (client_settings[client_name]
3347
["secret"])
3348
3349
# Add/remove clients based on new changes made to config
3350
for client_name in (set(old_client_settings)
3351
- set(client_settings)):
3352
del clients_data[client_name]
3353
for client_name in (set(client_settings)
3354
- set(old_client_settings)):
3355
clients_data[client_name] = client_settings[client_name]
3356
3357
# Create all client objects
3358
for client_name, client in clients_data.items():
3359
tcp_server.clients[client_name] = client_class(
3360
name=client_name,
3361
settings=client,
3362
server_settings=server_settings)
3363
2173
# For each value in new config, check if it differs
2174
# from the old config value (Except for the "secret"
2175
# attribute)
2176
if (name != "secret" and
2177
value != old_client_settings[client_name][name]):
2178
setattr(client, name, value)
2179
except KeyError:
2180
pass
2181
2182
# Clients who has passed its expire date, can still be enabled
2183
# if its last checker was sucessful. Clients who checkers
2184
# failed before we stored it state is asumed to had failed
2185
# checker during downtime.
2186
if client["enabled"] and client["last_checked_ok"]:
2187
if ((datetime.datetime.utcnow()
2188
- client["last_checked_ok"]) > client["interval"]):
2189
if client["last_checker_status"] != 0:
2190
client["enabled"] = False
2191
else:
2192
client["expires"] = (datetime.datetime.utcnow()
2193
+ client["timeout"])
2194
2195
client["changedstate"] = (multiprocessing_manager
2196
.Condition(multiprocessing_manager
2197
.Lock()))
2198
if use_dbus:
2199
new_client = ClientDBusTransitional.__new__(
2200
ClientDBusTransitional)
2201
tcp_server.clients[client_name] = new_client
2202
new_client.bus = bus
2203
for name, value in client.iteritems():
2204
setattr(new_client, name, value)
2205
new_client._approvals_pending = 0
2206
new_client.add_to_dbus()
2207
else:
2208
tcp_server.clients[client_name] = Client.__new__(Client)
2209
for name, value in client.iteritems():
2210
setattr(tcp_server.clients[client_name], name, value)
2211
2212
tcp_server.clients[client_name].decrypt_secret(
2213
client_settings[client_name]["secret"])
2214
2215
# Create/remove clients based on new changes made to config
2216
for clientname in set(old_client_settings) - set(client_settings):
2217
del tcp_server.clients[clientname]
2218
for clientname in set(client_settings) - set(old_client_settings):
2219
tcp_server.clients[clientname] = client_class(name
2220
= clientname,
2221
config =
2222
client_settings
2223
[clientname])
2224
3364
2225
if not tcp_server.clients:
3365
2226
logger.warning("No clients defined")
3366
3367
if not foreground:
3368
if pidfile is not None:
3369
pid = os.getpid()
3370
try:
3371
with pidfile:
3372
print(pid, file=pidfile)
3373
except IOError:
3374
logger.error("Could not write to file %r with PID %d",
3375
pidfilename, pid)
3376
del pidfile
2227
2228
if not debug:
2229
try:
2230
with pidfile:
2231
pid = os.getpid()
2232
pidfile.write(str(pid) + "\n".encode("utf-8"))
2233
del pidfile
2234
except IOError:
2235
logger.error("Could not write to file %r with PID %d",
2236
pidfilename, pid)
2237
except NameError:
2238
# "pidfile" was never created
2239
pass
3377
2240
del pidfilename
3378
3379
for termsig in (signal.SIGHUP, signal.SIGTERM):
3380
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3381
lambda: main_loop.quit() and False)
3382
2241
2242
signal.signal(signal.SIGINT, signal.SIG_IGN)
2243
2244
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2245
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2246
3383
2247
if use_dbus:
3384
3385
@alternate_dbus_interfaces(
3386
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3387
class MandosDBusService(DBusObjectWithObjectManager):
2248
class MandosDBusService(dbus.service.Object):
3388
2249
"""A D-Bus proxy object"""
3389
3390
2250
def __init__(self):
3391
2251
dbus.service.Object.__init__(self, bus, "/")
3392
3393
2252
_interface = "se.recompile.Mandos"
3394
2253
3395
2254
@dbus.service.signal(_interface, signature="o")
3396
2255
def ClientAdded(self, objpath):
3397
2256
"D-Bus signal"
3398
2257
pass
3399
2258
3400
2259
@dbus.service.signal(_interface, signature="ss")
3401
def ClientNotFound(self, key_id, address):
2260
def ClientNotFound(self, fingerprint, address):
3402
2261
"D-Bus signal"
3403
2262
pass
3404
3405
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3406
"true"})
2263
3407
2264
@dbus.service.signal(_interface, signature="os")
3408
2265
def ClientRemoved(self, objpath, name):
3409
2266
"D-Bus signal"
3410
2267
pass
3411
3412
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3413
"true"})
2268
3414
2269
@dbus.service.method(_interface, out_signature="ao")
3415
2270
def GetAllClients(self):
3416
2271
"D-Bus method"
3417
return dbus.Array(c.dbus_object_path for c in
3418
tcp_server.clients.values())
3419
3420
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3421
"true"})
2272
return dbus.Array(c.dbus_object_path
2273
for c in
2274
tcp_server.clients.itervalues())
2275
3422
2276
@dbus.service.method(_interface,
3423
2277
out_signature="a{oa{sv}}")
3424
2278
def GetAllClientsWithProperties(self):
3425
2279
"D-Bus method"
3426
2280
return dbus.Dictionary(
3427
{c.dbus_object_path: c.GetAll(
3428
"se.recompile.Mandos.Client")
3429
for c in tcp_server.clients.values()},
2281
((c.dbus_object_path, c.GetAll(""))
2282
for c in tcp_server.clients.itervalues()),
3430
2283
signature="oa{sv}")
3431
2284
3432
2285
@dbus.service.method(_interface, in_signature="o")
3433
2286
def RemoveClient(self, object_path):
3434
2287
"D-Bus method"
3435
for c in tcp_server.clients.values():
2288
for c in tcp_server.clients.itervalues():
3436
2289
if c.dbus_object_path == object_path:
3437
2290
del tcp_server.clients[c.name]
3438
2291
c.remove_from_connection()
3439
# Don't signal the disabling
2292
# Don't signal anything except ClientRemoved
3440
2293
c.disable(quiet=True)
3441
# Emit D-Bus signal for removal
3442
self.client_removed_signal(c)
2294
# Emit D-Bus signal
2295
self.ClientRemoved(object_path, c.name)
3443
2296
return
3444
2297
raise KeyError(object_path)
3445
2298
3446
2299
del _interface
3447
3448
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3449
out_signature="a{oa{sa{sv}}}")
3450
def GetManagedObjects(self):
3451
"""D-Bus method"""
3452
return dbus.Dictionary(
3453
{client.dbus_object_path:
3454
dbus.Dictionary(
3455
{interface: client.GetAll(interface)
3456
for interface in
3457
client._get_all_interface_names()})
3458
for client in tcp_server.clients.values()})
3459
3460
def client_added_signal(self, client):
3461
"""Send the new standard signal and the old signal"""
3462
if use_dbus:
3463
# New standard signal
3464
self.InterfacesAdded(
3465
client.dbus_object_path,
3466
dbus.Dictionary(
3467
{interface: client.GetAll(interface)
3468
for interface in
3469
client._get_all_interface_names()}))
3470
# Old signal
3471
self.ClientAdded(client.dbus_object_path)
3472
3473
def client_removed_signal(self, client):
3474
"""Send the new standard signal and the old signal"""
3475
if use_dbus:
3476
# New standard signal
3477
self.InterfacesRemoved(
3478
client.dbus_object_path,
3479
client._get_all_interface_names())
3480
# Old signal
3481
self.ClientRemoved(client.dbus_object_path,
3482
client.name)
3483
3484
mandos_dbus_service = MandosDBusService()
3485
3486
# Save modules to variables to exempt the modules from being
3487
# unloaded before the function registered with atexit() is run.
3488
mp = multiprocessing
3489
wn = wnull
3490
2300
2301
class MandosDBusServiceTransitional(MandosDBusService):
2302
__metaclass__ = AlternateDBusNamesMetaclass
2303
mandos_dbus_service = MandosDBusServiceTransitional()
2304
3491
2305
def cleanup():
3492
2306
"Cleanup function; run on exit"
3493
if zeroconf:
3494
service.cleanup()
3495
3496
mp.active_children()
3497
wn.close()
2307
service.cleanup()
2308
2309
multiprocessing.active_children()
3498
2310
if not (tcp_server.clients or client_settings):
3499
2311
return
3500
2312
3501
2313
# Store client before exiting. Secrets are encrypted with key
3502
2314
# based on what config file has. If config file is
3503
2315
# removed/edited, old secret will thus be unrecovable.
3504
clients = {}
3505
with PGPEngine() as pgp:
3506
for client in tcp_server.clients.values():
3507
key = client_settings[client.name]["secret"]
3508
client.encrypted_secret = pgp.encrypt(client.secret,
3509
key)
3510
client_dict = {}
3511
3512
# A list of attributes that can not be pickled
3513
# + secret.
3514
exclude = {"bus", "changedstate", "secret",
3515
"checker", "server_settings"}
3516
for name, typ in inspect.getmembers(dbus.service
3517
.Object):
3518
exclude.add(name)
3519
3520
client_dict["encrypted_secret"] = (client
3521
.encrypted_secret)
3522
for attr in client.client_structure:
3523
if attr not in exclude:
3524
client_dict[attr] = getattr(client, attr)
3525
3526
clients[client.name] = client_dict
3527
del client_settings[client.name]["secret"]
3528
2316
clients = []
2317
for client in tcp_server.clients.itervalues():
2318
client.encrypt_secret(
2319
client_settings[client.name]["secret"])
2320
2321
client_dict = {}
2322
2323
# A list of attributes that will not be stored when
2324
# shutting down.
2325
exclude = set(("bus", "changedstate", "secret"))
2326
for name, typ in inspect.getmembers(dbus.service.Object):
2327
exclude.add(name)
2328
2329
client_dict["encrypted_secret"] = client.encrypted_secret
2330
for attr in client.client_structure:
2331
if attr not in exclude:
2332
client_dict[attr] = getattr(client, attr)
2333
2334
clients.append(client_dict)
2335
del client_settings[client.name]["secret"]
2336
3529
2337
try:
3530
with tempfile.NamedTemporaryFile(
3531
mode='wb',
3532
suffix=".pickle",
3533
prefix='clients-',
3534
dir=os.path.dirname(stored_state_path),
3535
delete=False) as stored_state:
3536
pickle.dump((clients, client_settings), stored_state,
3537
protocol=2)
3538
tempname = stored_state.name
3539
os.rename(tempname, stored_state_path)
3540
except (IOError, OSError) as e:
3541
if not debug:
3542
try:
3543
os.remove(tempname)
3544
except NameError:
3545
pass
3546
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3547
logger.warning("Could not save persistent state: {}"
3548
.format(os.strerror(e.errno)))
3549
else:
3550
logger.warning("Could not save persistent state:",
3551
exc_info=e)
2338
with os.fdopen(os.open(stored_state_path,
2339
os.O_CREAT|os.O_WRONLY|os.O_TRUNC,
2340
stat.S_IRUSR | stat.S_IWUSR),
2341
"wb") as stored_state:
2342
pickle.dump((clients, client_settings), stored_state)
2343
except IOError as e:
2344
logger.warning("Could not save persistant state: {0}"
2345
.format(e))
2346
if e.errno != errno.ENOENT:
3552
2347
raise
3553
2348
3554
2349
# Delete all clients, and settings from config
3556
2351
name, client = tcp_server.clients.popitem()
3557
2352
if use_dbus:
3558
2353
client.remove_from_connection()
3559
# Don't signal the disabling
2354
# Don't signal anything except ClientRemoved
3560
2355
client.disable(quiet=True)
3561
# Emit D-Bus signal for removal
3562
2356
if use_dbus:
3563
mandos_dbus_service.client_removed_signal(client)
2357
# Emit D-Bus signal
2358
mandos_dbus_service.ClientRemoved(client
2359
.dbus_object_path,
2360
client.name)
3564
2361
client_settings.clear()
3565
2362
3566
2363
atexit.register(cleanup)
3567
3568
for client in tcp_server.clients.values():
2364
2365
for client in tcp_server.clients.itervalues():
3569
2366
if use_dbus:
3570
# Emit D-Bus signal for adding
3571
mandos_dbus_service.client_added_signal(client)
2367
# Emit D-Bus signal
2368
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3572
2369
# Need to initiate checking of clients
3573
2370
if client.enabled:
3574
2371
client.init_checker()
3575
2372
2373
3576
2374
tcp_server.enable()
3577
2375
tcp_server.server_activate()
3578
2376
3579
2377
# Find out what port we got
3580
if zeroconf:
3581
service.port = tcp_server.socket.getsockname()[1]
2378
service.port = tcp_server.socket.getsockname()[1]
3582
2379
if use_ipv6:
3583
2380
logger.info("Now listening on address %r, port %d,"
3584
" flowinfo %d, scope_id %d",
3585
*tcp_server.socket.getsockname())
2381
" flowinfo %d, scope_id %d"
2382
% tcp_server.socket.getsockname())
3586
2383
else: # IPv4
3587
logger.info("Now listening on address %r, port %d",
3588
*tcp_server.socket.getsockname())
3589
3590
# service.interface = tcp_server.socket.getsockname()[3]
3591
2384
logger.info("Now listening on address %r, port %d"
2385
% tcp_server.socket.getsockname())
2386
2387
#service.interface = tcp_server.socket.getsockname()[3]
2388
3592
2389
try:
3593
if zeroconf:
3594
# From the Avahi example code
3595
try:
3596
service.activate()
3597
except dbus.exceptions.DBusException as error:
3598
logger.critical("D-Bus Exception", exc_info=error)
3599
cleanup()
3600
sys.exit(1)
3601
# End of Avahi example code
3602
3603
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3604
lambda *args, **kwargs:
3605
(tcp_server.handle_request
3606
(*args[2:], **kwargs) or True))
3607
2390
# From the Avahi example code
2391
try:
2392
service.activate()
2393
except dbus.exceptions.DBusException as error:
2394
logger.critical("DBusException: %s", error)
2395
cleanup()
2396
sys.exit(1)
2397
# End of Avahi example code
2398
2399
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2400
lambda *args, **kwargs:
2401
(tcp_server.handle_request
2402
(*args[2:], **kwargs) or True))
2403
3608
2404
logger.debug("Starting main loop")
3609
2405
main_loop.run()
3610
2406
except AvahiError as error:
3611
logger.critical("Avahi Error", exc_info=error)
2407
logger.critical("AvahiError: %s", error)
3612
2408
cleanup()
3613
2409
sys.exit(1)
3614
2410
except KeyboardInterrupt:
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0