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- Committer: Teddy Hogeborn
- Date: 2019-02-11 05:14:10 UTC
- Revision ID: teddy@recompile.se-20190211051410-43fmzhy0vlafw2pc
Fix warnings from -Wimplicit-fallthrough
* plugin-runner.c (main/parse_opt): Add __builtin_unreachable() after
calls to argp_state_help().
* plugins.d/askpass-fifo.c (error_plus): Add __builtin_unreachable()
after calls to error().
* plugins.d/mandos-client.c (main/parse_opt) Add
__builtin_unreachable()
after calls to
argp_state_help().
* plugins.d/password-prompt.c: - '' -
* plugin-runner.c (main/parse_opt): Add __builtin_unreachable() after
calls to argp_state_help().
* plugins.d/askpass-fifo.c (error_plus): Add __builtin_unreachable()
after calls to error().
* plugins.d/mandos-client.c (main/parse_opt) Add
__builtin_unreachable()
after calls to
argp_state_help().
* plugins.d/password-prompt.c: - '' -
- files added:
- bugs.xml
- debian/upstream
- network-hooks.d
- plugin-helpers
- files removed:
- initramfs-tools-hook-conf
- 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 © 2008-2011 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
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
19
21
# the Free Software Foundation, either version 3 of the License, or
20
22
# (at your option) any later version.
21
23
#
22
# This program is distributed in the hope that it will be useful,
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
24
# Mandos is distributed in the hope that it will be useful, but
25
# WITHOUT ANY WARRANTY; without even the implied warranty of
24
26
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25
27
# GNU General Public License for more details.
26
#
28
#
27
29
# You should have received a copy of the GNU General Public License
28
# along with this program. If not, see
29
# <http://www.gnu.org/licenses/>.
30
#
30
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
31
#
31
32
# Contact the authors at <mandos@recompile.se>.
32
#
33
#
33
34
34
35
from __future__ import (division, absolute_import, print_function,
35
36
unicode_literals)
36
37
37
import SocketServer as socketserver
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
38
47
import socket
39
48
import argparse
40
49
import datetime
41
50
import errno
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
51
try:
52
import ConfigParser as configparser
53
except ImportError:
54
import configparser
49
55
import sys
50
56
import re
51
57
import os
60
66
import struct
61
67
import fcntl
62
68
import functools
63
import cPickle as pickle
69
try:
70
import cPickle as pickle
71
except ImportError:
72
import pickle
64
73
import multiprocessing
65
74
import types
66
import hashlib
75
import binascii
76
import tempfile
77
import itertools
78
import collections
79
import codecs
67
80
68
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import dbus
69
82
import dbus.service
70
import gobject
71
import avahi
83
from gi.repository import GLib
72
84
from dbus.mainloop.glib import DBusGMainLoop
73
85
import ctypes
74
86
import ctypes.util
75
87
import xml.dom.minidom
76
88
import inspect
77
import Crypto.Cipher.AES
78
89
90
# Try to find the value of SO_BINDTODEVICE:
79
91
try:
92
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
93
# newer, and it is also the most natural place for it:
80
94
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
81
95
except AttributeError:
82
96
try:
97
# This is where SO_BINDTODEVICE was up to and including Python
98
# 2.6, and also 3.2:
83
99
from IN import SO_BINDTODEVICE
84
100
except ImportError:
85
SO_BINDTODEVICE = None
86
87
88
version = "1.4.1"
89
stored_state_path = "/var/lib/mandos/clients.pickle"
101
# In Python 2.7 it seems to have been removed entirely.
102
# Try running the C preprocessor:
103
try:
104
cc = subprocess.Popen(["cc", "--language=c", "-E",
105
"/dev/stdin"],
106
stdin=subprocess.PIPE,
107
stdout=subprocess.PIPE)
108
stdout = cc.communicate(
109
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
110
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
111
except (OSError, ValueError, IndexError):
112
# No value found
113
SO_BINDTODEVICE = None
114
115
if sys.version_info.major == 2:
116
str = unicode
117
118
version = "1.8.2"
119
stored_state_file = "clients.pickle"
90
120
91
121
logger = logging.getLogger()
92
syslogger = (logging.handlers.SysLogHandler
93
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
94
address = str("/dev/log")))
95
96
def initlogger(level=logging.WARNING):
122
syslogger = None
123
124
try:
125
if_nametoindex = ctypes.cdll.LoadLibrary(
126
ctypes.util.find_library("c")).if_nametoindex
127
except (OSError, AttributeError):
128
129
def if_nametoindex(interface):
130
"Get an interface index the hard way, i.e. using fcntl()"
131
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
132
with contextlib.closing(socket.socket()) as s:
133
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
134
struct.pack(b"16s16x", interface))
135
interface_index = struct.unpack("I", ifreq[16:20])[0]
136
return interface_index
137
138
139
def copy_function(func):
140
"""Make a copy of a function"""
141
if sys.version_info.major == 2:
142
return types.FunctionType(func.func_code,
143
func.func_globals,
144
func.func_name,
145
func.func_defaults,
146
func.func_closure)
147
else:
148
return types.FunctionType(func.__code__,
149
func.__globals__,
150
func.__name__,
151
func.__defaults__,
152
func.__closure__)
153
154
155
def initlogger(debug, level=logging.WARNING):
97
156
"""init logger and add loglevel"""
98
157
158
global syslogger
159
syslogger = (logging.handlers.SysLogHandler(
160
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
161
address="/dev/log"))
99
162
syslogger.setFormatter(logging.Formatter
100
163
('Mandos [%(process)d]: %(levelname)s:'
101
164
' %(message)s'))
102
165
logger.addHandler(syslogger)
103
104
console = logging.StreamHandler()
105
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
106
' [%(process)d]:'
107
' %(levelname)s:'
108
' %(message)s'))
109
logger.addHandler(console)
166
167
if debug:
168
console = logging.StreamHandler()
169
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
170
' [%(process)d]:'
171
' %(levelname)s:'
172
' %(message)s'))
173
logger.addHandler(console)
110
174
logger.setLevel(level)
111
175
112
176
177
class PGPError(Exception):
178
"""Exception if encryption/decryption fails"""
179
pass
180
181
182
class PGPEngine(object):
183
"""A simple class for OpenPGP symmetric encryption & decryption"""
184
185
def __init__(self):
186
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
187
self.gpg = "gpg"
188
try:
189
output = subprocess.check_output(["gpgconf"])
190
for line in output.splitlines():
191
name, text, path = line.split(b":")
192
if name == "gpg":
193
self.gpg = path
194
break
195
except OSError as e:
196
if e.errno != errno.ENOENT:
197
raise
198
self.gnupgargs = ['--batch',
199
'--homedir', self.tempdir,
200
'--force-mdc',
201
'--quiet']
202
# Only GPG version 1 has the --no-use-agent option.
203
if self.gpg == "gpg" or self.gpg.endswith("/gpg"):
204
self.gnupgargs.append("--no-use-agent")
205
206
def __enter__(self):
207
return self
208
209
def __exit__(self, exc_type, exc_value, traceback):
210
self._cleanup()
211
return False
212
213
def __del__(self):
214
self._cleanup()
215
216
def _cleanup(self):
217
if self.tempdir is not None:
218
# Delete contents of tempdir
219
for root, dirs, files in os.walk(self.tempdir,
220
topdown=False):
221
for filename in files:
222
os.remove(os.path.join(root, filename))
223
for dirname in dirs:
224
os.rmdir(os.path.join(root, dirname))
225
# Remove tempdir
226
os.rmdir(self.tempdir)
227
self.tempdir = None
228
229
def password_encode(self, password):
230
# Passphrase can not be empty and can not contain newlines or
231
# NUL bytes. So we prefix it and hex encode it.
232
encoded = b"mandos" + binascii.hexlify(password)
233
if len(encoded) > 2048:
234
# GnuPG can't handle long passwords, so encode differently
235
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
236
.replace(b"\n", b"\\n")
237
.replace(b"\0", b"\\x00"))
238
return encoded
239
240
def encrypt(self, data, password):
241
passphrase = self.password_encode(password)
242
with tempfile.NamedTemporaryFile(
243
dir=self.tempdir) as passfile:
244
passfile.write(passphrase)
245
passfile.flush()
246
proc = subprocess.Popen([self.gpg, '--symmetric',
247
'--passphrase-file',
248
passfile.name]
249
+ self.gnupgargs,
250
stdin=subprocess.PIPE,
251
stdout=subprocess.PIPE,
252
stderr=subprocess.PIPE)
253
ciphertext, err = proc.communicate(input=data)
254
if proc.returncode != 0:
255
raise PGPError(err)
256
return ciphertext
257
258
def decrypt(self, data, password):
259
passphrase = self.password_encode(password)
260
with tempfile.NamedTemporaryFile(
261
dir=self.tempdir) as passfile:
262
passfile.write(passphrase)
263
passfile.flush()
264
proc = subprocess.Popen([self.gpg, '--decrypt',
265
'--passphrase-file',
266
passfile.name]
267
+ self.gnupgargs,
268
stdin=subprocess.PIPE,
269
stdout=subprocess.PIPE,
270
stderr=subprocess.PIPE)
271
decrypted_plaintext, err = proc.communicate(input=data)
272
if proc.returncode != 0:
273
raise PGPError(err)
274
return decrypted_plaintext
275
276
277
# Pretend that we have an Avahi module
278
class Avahi(object):
279
"""This isn't so much a class as it is a module-like namespace.
280
It is instantiated once, and simulates having an Avahi module."""
281
IF_UNSPEC = -1 # avahi-common/address.h
282
PROTO_UNSPEC = -1 # avahi-common/address.h
283
PROTO_INET = 0 # avahi-common/address.h
284
PROTO_INET6 = 1 # avahi-common/address.h
285
DBUS_NAME = "org.freedesktop.Avahi"
286
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
287
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
288
DBUS_PATH_SERVER = "/"
289
290
def string_array_to_txt_array(self, t):
291
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
292
for s in t), signature="ay")
293
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
294
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
295
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
296
SERVER_INVALID = 0 # avahi-common/defs.h
297
SERVER_REGISTERING = 1 # avahi-common/defs.h
298
SERVER_RUNNING = 2 # avahi-common/defs.h
299
SERVER_COLLISION = 3 # avahi-common/defs.h
300
SERVER_FAILURE = 4 # avahi-common/defs.h
301
avahi = Avahi()
302
303
113
304
class AvahiError(Exception):
114
305
def __init__(self, value, *args, **kwargs):
115
306
self.value = value
116
super(AvahiError, self).__init__(value, *args, **kwargs)
117
def __unicode__(self):
118
return unicode(repr(self.value))
307
return super(AvahiError, self).__init__(value, *args,
308
**kwargs)
309
119
310
120
311
class AvahiServiceError(AvahiError):
121
312
pass
122
313
314
123
315
class AvahiGroupError(AvahiError):
124
316
pass
125
317
126
318
127
319
class AvahiService(object):
128
320
"""An Avahi (Zeroconf) service.
129
321
130
322
Attributes:
131
323
interface: integer; avahi.IF_UNSPEC or an interface index.
132
324
Used to optionally bind to the specified interface.
133
325
name: string; Example: 'Mandos'
134
326
type: string; Example: '_mandos._tcp'.
135
See <http://www.dns-sd.org/ServiceTypes.html>
327
See <https://www.iana.org/assignments/service-names-port-numbers>
136
328
port: integer; what port to announce
137
329
TXT: list of strings; TXT record for the service
138
330
domain: string; Domain to publish on, default to .local if empty.
144
336
server: D-Bus Server
145
337
bus: dbus.SystemBus()
146
338
"""
147
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
148
servicetype = None, port = None, TXT = None,
149
domain = "", host = "", max_renames = 32768,
150
protocol = avahi.PROTO_UNSPEC, bus = None):
339
340
def __init__(self,
341
interface=avahi.IF_UNSPEC,
342
name=None,
343
servicetype=None,
344
port=None,
345
TXT=None,
346
domain="",
347
host="",
348
max_renames=32768,
349
protocol=avahi.PROTO_UNSPEC,
350
bus=None):
151
351
self.interface = interface
152
352
self.name = name
153
353
self.type = servicetype
162
362
self.server = None
163
363
self.bus = bus
164
364
self.entry_group_state_changed_match = None
165
def rename(self):
365
366
def rename(self, remove=True):
166
367
"""Derived from the Avahi example code"""
167
368
if self.rename_count >= self.max_renames:
168
369
logger.critical("No suitable Zeroconf service name found"
169
370
" after %i retries, exiting.",
170
371
self.rename_count)
171
372
raise AvahiServiceError("Too many renames")
172
self.name = unicode(self.server
173
.GetAlternativeServiceName(self.name))
373
self.name = str(
374
self.server.GetAlternativeServiceName(self.name))
375
self.rename_count += 1
174
376
logger.info("Changing Zeroconf service name to %r ...",
175
377
self.name)
176
self.remove()
378
if remove:
379
self.remove()
177
380
try:
178
381
self.add()
179
382
except dbus.exceptions.DBusException as error:
180
logger.critical("DBusException: %s", error)
181
self.cleanup()
182
os._exit(1)
183
self.rename_count += 1
383
if (error.get_dbus_name()
384
== "org.freedesktop.Avahi.CollisionError"):
385
logger.info("Local Zeroconf service name collision.")
386
return self.rename(remove=False)
387
else:
388
logger.critical("D-Bus Exception", exc_info=error)
389
self.cleanup()
390
os._exit(1)
391
184
392
def remove(self):
185
393
"""Derived from the Avahi example code"""
186
394
if self.entry_group_state_changed_match is not None:
188
396
self.entry_group_state_changed_match = None
189
397
if self.group is not None:
190
398
self.group.Reset()
399
191
400
def add(self):
192
401
"""Derived from the Avahi example code"""
193
402
self.remove()
210
419
dbus.UInt16(self.port),
211
420
avahi.string_array_to_txt_array(self.TXT))
212
421
self.group.Commit()
422
213
423
def entry_group_state_changed(self, state, error):
214
424
"""Derived from the Avahi example code"""
215
425
logger.debug("Avahi entry group state change: %i", state)
216
426
217
427
if state == avahi.ENTRY_GROUP_ESTABLISHED:
218
428
logger.debug("Zeroconf service established.")
219
429
elif state == avahi.ENTRY_GROUP_COLLISION:
221
431
self.rename()
222
432
elif state == avahi.ENTRY_GROUP_FAILURE:
223
433
logger.critical("Avahi: Error in group state changed %s",
224
unicode(error))
225
raise AvahiGroupError("State changed: %s"
226
% unicode(error))
434
str(error))
435
raise AvahiGroupError("State changed: {!s}".format(error))
436
227
437
def cleanup(self):
228
438
"""Derived from the Avahi example code"""
229
439
if self.group is not None:
230
440
try:
231
441
self.group.Free()
232
442
except (dbus.exceptions.UnknownMethodException,
233
dbus.exceptions.DBusException) as e:
443
dbus.exceptions.DBusException):
234
444
pass
235
445
self.group = None
236
446
self.remove()
447
237
448
def server_state_changed(self, state, error=None):
238
449
"""Derived from the Avahi example code"""
239
450
logger.debug("Avahi server state change: %i", state)
240
bad_states = { avahi.SERVER_INVALID:
241
"Zeroconf server invalid",
242
avahi.SERVER_REGISTERING: None,
243
avahi.SERVER_COLLISION:
244
"Zeroconf server name collision",
245
avahi.SERVER_FAILURE:
246
"Zeroconf server failure" }
451
bad_states = {
452
avahi.SERVER_INVALID: "Zeroconf server invalid",
453
avahi.SERVER_REGISTERING: None,
454
avahi.SERVER_COLLISION: "Zeroconf server name collision",
455
avahi.SERVER_FAILURE: "Zeroconf server failure",
456
}
247
457
if state in bad_states:
248
458
if bad_states[state] is not None:
249
459
if error is None:
252
462
logger.error(bad_states[state] + ": %r", error)
253
463
self.cleanup()
254
464
elif state == avahi.SERVER_RUNNING:
255
self.add()
465
try:
466
self.add()
467
except dbus.exceptions.DBusException as error:
468
if (error.get_dbus_name()
469
== "org.freedesktop.Avahi.CollisionError"):
470
logger.info("Local Zeroconf service name"
471
" collision.")
472
return self.rename(remove=False)
473
else:
474
logger.critical("D-Bus Exception", exc_info=error)
475
self.cleanup()
476
os._exit(1)
256
477
else:
257
478
if error is None:
258
479
logger.debug("Unknown state: %r", state)
259
480
else:
260
481
logger.debug("Unknown state: %r: %r", state, error)
482
261
483
def activate(self):
262
484
"""Derived from the Avahi example code"""
263
485
if self.server is None:
267
489
follow_name_owner_changes=True),
268
490
avahi.DBUS_INTERFACE_SERVER)
269
491
self.server.connect_to_signal("StateChanged",
270
self.server_state_changed)
492
self.server_state_changed)
271
493
self.server_state_changed(self.server.GetState())
272
494
495
273
496
class AvahiServiceToSyslog(AvahiService):
274
def rename(self):
497
def rename(self, *args, **kwargs):
275
498
"""Add the new name to the syslog messages"""
276
ret = AvahiService.rename(self)
277
syslogger.setFormatter(logging.Formatter
278
('Mandos (%s) [%%(process)d]:'
279
' %%(levelname)s: %%(message)s'
280
% self.name))
499
ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
500
syslogger.setFormatter(logging.Formatter(
501
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
502
.format(self.name)))
281
503
return ret
282
504
283
def _timedelta_to_milliseconds(td):
284
"Convert a datetime.timedelta() to milliseconds"
285
return ((td.days * 24 * 60 * 60 * 1000)
286
+ (td.seconds * 1000)
287
+ (td.microseconds // 1000))
288
505
506
# Pretend that we have a GnuTLS module
507
class GnuTLS(object):
508
"""This isn't so much a class as it is a module-like namespace.
509
It is instantiated once, and simulates having a GnuTLS module."""
510
511
library = ctypes.util.find_library("gnutls")
512
if library is None:
513
library = ctypes.util.find_library("gnutls-deb0")
514
_library = ctypes.cdll.LoadLibrary(library)
515
del library
516
_need_version = b"3.3.0"
517
_tls_rawpk_version = b"3.6.6"
518
519
def __init__(self):
520
# Need to use "self" here, since this method is called before
521
# the assignment to the "gnutls" global variable happens.
522
if self.check_version(self._need_version) is None:
523
raise self.Error("Needs GnuTLS {} or later"
524
.format(self._need_version))
525
526
# Unless otherwise indicated, the constants and types below are
527
# all from the gnutls/gnutls.h C header file.
528
529
# Constants
530
E_SUCCESS = 0
531
E_INTERRUPTED = -52
532
E_AGAIN = -28
533
CRT_OPENPGP = 2
534
CRT_RAWPK = 3
535
CLIENT = 2
536
SHUT_RDWR = 0
537
CRD_CERTIFICATE = 1
538
E_NO_CERTIFICATE_FOUND = -49
539
X509_FMT_DER = 0
540
NO_TICKETS = 1<<10
541
ENABLE_RAWPK = 1<<18
542
CTYPE_PEERS = 3
543
KEYID_USE_SHA256 = 1 # gnutls/x509.h
544
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
545
546
# Types
547
class session_int(ctypes.Structure):
548
_fields_ = []
549
session_t = ctypes.POINTER(session_int)
550
551
class certificate_credentials_st(ctypes.Structure):
552
_fields_ = []
553
certificate_credentials_t = ctypes.POINTER(
554
certificate_credentials_st)
555
certificate_type_t = ctypes.c_int
556
557
class datum_t(ctypes.Structure):
558
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
559
('size', ctypes.c_uint)]
560
561
class openpgp_crt_int(ctypes.Structure):
562
_fields_ = []
563
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
564
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
565
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
566
credentials_type_t = ctypes.c_int
567
transport_ptr_t = ctypes.c_void_p
568
close_request_t = ctypes.c_int
569
570
# Exceptions
571
class Error(Exception):
572
# We need to use the class name "GnuTLS" here, since this
573
# exception might be raised from within GnuTLS.__init__,
574
# which is called before the assignment to the "gnutls"
575
# global variable has happened.
576
def __init__(self, message=None, code=None, args=()):
577
# Default usage is by a message string, but if a return
578
# code is passed, convert it to a string with
579
# gnutls.strerror()
580
self.code = code
581
if message is None and code is not None:
582
message = GnuTLS.strerror(code)
583
return super(GnuTLS.Error, self).__init__(
584
message, *args)
585
586
class CertificateSecurityError(Error):
587
pass
588
589
# Classes
590
class Credentials(object):
591
def __init__(self):
592
self._c_object = gnutls.certificate_credentials_t()
593
gnutls.certificate_allocate_credentials(
594
ctypes.byref(self._c_object))
595
self.type = gnutls.CRD_CERTIFICATE
596
597
def __del__(self):
598
gnutls.certificate_free_credentials(self._c_object)
599
600
class ClientSession(object):
601
def __init__(self, socket, credentials=None):
602
self._c_object = gnutls.session_t()
603
gnutls_flags = gnutls.CLIENT
604
if gnutls.check_version("3.5.6"):
605
gnutls_flags |= gnutls.NO_TICKETS
606
if gnutls.has_rawpk:
607
gnutls_flags |= gnutls.ENABLE_RAWPK
608
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
609
del gnutls_flags
610
gnutls.set_default_priority(self._c_object)
611
gnutls.transport_set_ptr(self._c_object, socket.fileno())
612
gnutls.handshake_set_private_extensions(self._c_object,
613
True)
614
self.socket = socket
615
if credentials is None:
616
credentials = gnutls.Credentials()
617
gnutls.credentials_set(self._c_object, credentials.type,
618
ctypes.cast(credentials._c_object,
619
ctypes.c_void_p))
620
self.credentials = credentials
621
622
def __del__(self):
623
gnutls.deinit(self._c_object)
624
625
def handshake(self):
626
return gnutls.handshake(self._c_object)
627
628
def send(self, data):
629
data = bytes(data)
630
data_len = len(data)
631
while data_len > 0:
632
data_len -= gnutls.record_send(self._c_object,
633
data[-data_len:],
634
data_len)
635
636
def bye(self):
637
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
638
639
# Error handling functions
640
def _error_code(result):
641
"""A function to raise exceptions on errors, suitable
642
for the 'restype' attribute on ctypes functions"""
643
if result >= 0:
644
return result
645
if result == gnutls.E_NO_CERTIFICATE_FOUND:
646
raise gnutls.CertificateSecurityError(code=result)
647
raise gnutls.Error(code=result)
648
649
def _retry_on_error(result, func, arguments):
650
"""A function to retry on some errors, suitable
651
for the 'errcheck' attribute on ctypes functions"""
652
while result < 0:
653
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
654
return _error_code(result)
655
result = func(*arguments)
656
return result
657
658
# Unless otherwise indicated, the function declarations below are
659
# all from the gnutls/gnutls.h C header file.
660
661
# Functions
662
priority_set_direct = _library.gnutls_priority_set_direct
663
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
664
ctypes.POINTER(ctypes.c_char_p)]
665
priority_set_direct.restype = _error_code
666
667
init = _library.gnutls_init
668
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
669
init.restype = _error_code
670
671
set_default_priority = _library.gnutls_set_default_priority
672
set_default_priority.argtypes = [session_t]
673
set_default_priority.restype = _error_code
674
675
record_send = _library.gnutls_record_send
676
record_send.argtypes = [session_t, ctypes.c_void_p,
677
ctypes.c_size_t]
678
record_send.restype = ctypes.c_ssize_t
679
record_send.errcheck = _retry_on_error
680
681
certificate_allocate_credentials = (
682
_library.gnutls_certificate_allocate_credentials)
683
certificate_allocate_credentials.argtypes = [
684
ctypes.POINTER(certificate_credentials_t)]
685
certificate_allocate_credentials.restype = _error_code
686
687
certificate_free_credentials = (
688
_library.gnutls_certificate_free_credentials)
689
certificate_free_credentials.argtypes = [
690
certificate_credentials_t]
691
certificate_free_credentials.restype = None
692
693
handshake_set_private_extensions = (
694
_library.gnutls_handshake_set_private_extensions)
695
handshake_set_private_extensions.argtypes = [session_t,
696
ctypes.c_int]
697
handshake_set_private_extensions.restype = None
698
699
credentials_set = _library.gnutls_credentials_set
700
credentials_set.argtypes = [session_t, credentials_type_t,
701
ctypes.c_void_p]
702
credentials_set.restype = _error_code
703
704
strerror = _library.gnutls_strerror
705
strerror.argtypes = [ctypes.c_int]
706
strerror.restype = ctypes.c_char_p
707
708
certificate_type_get = _library.gnutls_certificate_type_get
709
certificate_type_get.argtypes = [session_t]
710
certificate_type_get.restype = _error_code
711
712
certificate_get_peers = _library.gnutls_certificate_get_peers
713
certificate_get_peers.argtypes = [session_t,
714
ctypes.POINTER(ctypes.c_uint)]
715
certificate_get_peers.restype = ctypes.POINTER(datum_t)
716
717
global_set_log_level = _library.gnutls_global_set_log_level
718
global_set_log_level.argtypes = [ctypes.c_int]
719
global_set_log_level.restype = None
720
721
global_set_log_function = _library.gnutls_global_set_log_function
722
global_set_log_function.argtypes = [log_func]
723
global_set_log_function.restype = None
724
725
deinit = _library.gnutls_deinit
726
deinit.argtypes = [session_t]
727
deinit.restype = None
728
729
handshake = _library.gnutls_handshake
730
handshake.argtypes = [session_t]
731
handshake.restype = _error_code
732
handshake.errcheck = _retry_on_error
733
734
transport_set_ptr = _library.gnutls_transport_set_ptr
735
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
736
transport_set_ptr.restype = None
737
738
bye = _library.gnutls_bye
739
bye.argtypes = [session_t, close_request_t]
740
bye.restype = _error_code
741
bye.errcheck = _retry_on_error
742
743
check_version = _library.gnutls_check_version
744
check_version.argtypes = [ctypes.c_char_p]
745
check_version.restype = ctypes.c_char_p
746
747
has_rawpk = bool(check_version(_tls_rawpk_version))
748
749
if has_rawpk:
750
# Types
751
class pubkey_st(ctypes.Structure):
752
_fields = []
753
pubkey_t = ctypes.POINTER(pubkey_st)
754
755
x509_crt_fmt_t = ctypes.c_int
756
757
# All the function declarations below are from gnutls/abstract.h
758
pubkey_init = _library.gnutls_pubkey_init
759
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
760
pubkey_init.restype = _error_code
761
762
pubkey_import = _library.gnutls_pubkey_import
763
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
764
x509_crt_fmt_t]
765
pubkey_import.restype = _error_code
766
767
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
768
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
769
ctypes.POINTER(ctypes.c_ubyte),
770
ctypes.POINTER(ctypes.c_size_t)]
771
pubkey_get_key_id.restype = _error_code
772
773
pubkey_deinit = _library.gnutls_pubkey_deinit
774
pubkey_deinit.argtypes = [pubkey_t]
775
pubkey_deinit.restype = None
776
else:
777
# All the function declarations below are from gnutls/openpgp.h
778
779
openpgp_crt_init = _library.gnutls_openpgp_crt_init
780
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
781
openpgp_crt_init.restype = _error_code
782
783
openpgp_crt_import = _library.gnutls_openpgp_crt_import
784
openpgp_crt_import.argtypes = [openpgp_crt_t,
785
ctypes.POINTER(datum_t),
786
openpgp_crt_fmt_t]
787
openpgp_crt_import.restype = _error_code
788
789
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
790
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
791
ctypes.POINTER(ctypes.c_uint)]
792
openpgp_crt_verify_self.restype = _error_code
793
794
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
795
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
796
openpgp_crt_deinit.restype = None
797
798
openpgp_crt_get_fingerprint = (
799
_library.gnutls_openpgp_crt_get_fingerprint)
800
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
801
ctypes.c_void_p,
802
ctypes.POINTER(
803
ctypes.c_size_t)]
804
openpgp_crt_get_fingerprint.restype = _error_code
805
806
if check_version("3.6.4"):
807
certificate_type_get2 = _library.gnutls_certificate_type_get2
808
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
809
certificate_type_get2.restype = _error_code
810
811
# Remove non-public functions
812
del _error_code, _retry_on_error
813
# Create the global "gnutls" object, simulating a module
814
gnutls = GnuTLS()
815
816
817
def call_pipe(connection, # : multiprocessing.Connection
818
func, *args, **kwargs):
819
"""This function is meant to be called by multiprocessing.Process
820
821
This function runs func(*args, **kwargs), and writes the resulting
822
return value on the provided multiprocessing.Connection.
823
"""
824
connection.send(func(*args, **kwargs))
825
connection.close()
826
827
289
828
class Client(object):
290
829
"""A representation of a client host served by this server.
291
830
292
831
Attributes:
293
_approved: bool(); 'None' if not yet approved/disapproved
832
approved: bool(); 'None' if not yet approved/disapproved
294
833
approval_delay: datetime.timedelta(); Time to wait for approval
295
834
approval_duration: datetime.timedelta(); Duration of one approval
296
835
checker: subprocess.Popen(); a running checker process used
297
836
to see if the client lives.
298
837
'None' if no process is running.
299
checker_callback_tag: a gobject event source tag, or None
838
checker_callback_tag: a GLib event source tag, or None
300
839
checker_command: string; External command which is run to check
301
840
if client lives. %() expansions are done at
302
841
runtime with vars(self) as dict, so that for
303
842
instance %(name)s can be used in the command.
304
checker_initiator_tag: a gobject event source tag, or None
843
checker_initiator_tag: a GLib event source tag, or None
305
844
created: datetime.datetime(); (UTC) object creation
306
845
client_structure: Object describing what attributes a client has
307
846
and is used for storing the client at exit
308
847
current_checker_command: string; current running checker_command
309
disable_initiator_tag: a gobject event source tag, or None
848
disable_initiator_tag: a GLib event source tag, or None
310
849
enabled: bool()
311
850
fingerprint: string (40 or 32 hexadecimal digits); used to
312
uniquely identify the client
851
uniquely identify an OpenPGP client
852
key_id: string (64 hexadecimal digits); used to uniquely identify
853
a client using raw public keys
313
854
host: string; available for use by the checker command
314
855
interval: datetime.timedelta(); How often to start a new checker
315
856
last_approval_request: datetime.datetime(); (UTC) or None
316
857
last_checked_ok: datetime.datetime(); (UTC) or None
317
last_checker_status: integer between 0 and 255 reflecting exit status
318
of last checker. -1 reflect crashed checker,
319
or None.
320
last_enabled: datetime.datetime(); (UTC)
858
last_checker_status: integer between 0 and 255 reflecting exit
859
status of last checker. -1 reflects crashed
860
checker, -2 means no checker completed yet.
861
last_checker_signal: The signal which killed the last checker, if
862
last_checker_status is -1
863
last_enabled: datetime.datetime(); (UTC) or None
321
864
name: string; from the config file, used in log messages and
322
865
D-Bus identifiers
323
866
secret: bytestring; sent verbatim (over TLS) to client
324
867
timeout: datetime.timedelta(); How long from last_checked_ok
325
868
until this client is disabled
326
extended_timeout: extra long timeout when password has been sent
869
extended_timeout: extra long timeout when secret has been sent
327
870
runtime_expansions: Allowed attributes for runtime expansion.
328
871
expires: datetime.datetime(); time (UTC) when a client will be
329
872
disabled, or None
873
server_settings: The server_settings dict from main()
330
874
"""
331
875
332
876
runtime_expansions = ("approval_delay", "approval_duration",
333
"created", "enabled", "fingerprint",
334
"host", "interval", "last_checked_ok",
877
"created", "enabled", "expires", "key_id",
878
"fingerprint", "host", "interval",
879
"last_approval_request", "last_checked_ok",
335
880
"last_enabled", "name", "timeout")
336
337
def timeout_milliseconds(self):
338
"Return the 'timeout' attribute in milliseconds"
339
return _timedelta_to_milliseconds(self.timeout)
340
341
def extended_timeout_milliseconds(self):
342
"Return the 'extended_timeout' attribute in milliseconds"
343
return _timedelta_to_milliseconds(self.extended_timeout)
344
345
def interval_milliseconds(self):
346
"Return the 'interval' attribute in milliseconds"
347
return _timedelta_to_milliseconds(self.interval)
348
349
def approval_delay_milliseconds(self):
350
return _timedelta_to_milliseconds(self.approval_delay)
351
352
def __init__(self, name = None, config=None):
353
"""Note: the 'checker' key in 'config' sets the
354
'checker_command' attribute and *not* the 'checker'
355
attribute."""
881
client_defaults = {
882
"timeout": "PT5M",
883
"extended_timeout": "PT15M",
884
"interval": "PT2M",
885
"checker": "fping -q -- %%(host)s",
886
"host": "",
887
"approval_delay": "PT0S",
888
"approval_duration": "PT1S",
889
"approved_by_default": "True",
890
"enabled": "True",
891
}
892
893
@staticmethod
894
def config_parser(config):
895
"""Construct a new dict of client settings of this form:
896
{ client_name: {setting_name: value, ...}, ...}
897
with exceptions for any special settings as defined above.
898
NOTE: Must be a pure function. Must return the same result
899
value given the same arguments.
900
"""
901
settings = {}
902
for client_name in config.sections():
903
section = dict(config.items(client_name))
904
client = settings[client_name] = {}
905
906
client["host"] = section["host"]
907
# Reformat values from string types to Python types
908
client["approved_by_default"] = config.getboolean(
909
client_name, "approved_by_default")
910
client["enabled"] = config.getboolean(client_name,
911
"enabled")
912
913
# Uppercase and remove spaces from key_id and fingerprint
914
# for later comparison purposes with return value from the
915
# key_id() and fingerprint() functions
916
client["key_id"] = (section.get("key_id", "").upper()
917
.replace(" ", ""))
918
client["fingerprint"] = (section["fingerprint"].upper()
919
.replace(" ", ""))
920
if "secret" in section:
921
client["secret"] = codecs.decode(section["secret"]
922
.encode("utf-8"),
923
"base64")
924
elif "secfile" in section:
925
with open(os.path.expanduser(os.path.expandvars
926
(section["secfile"])),
927
"rb") as secfile:
928
client["secret"] = secfile.read()
929
else:
930
raise TypeError("No secret or secfile for section {}"
931
.format(section))
932
client["timeout"] = string_to_delta(section["timeout"])
933
client["extended_timeout"] = string_to_delta(
934
section["extended_timeout"])
935
client["interval"] = string_to_delta(section["interval"])
936
client["approval_delay"] = string_to_delta(
937
section["approval_delay"])
938
client["approval_duration"] = string_to_delta(
939
section["approval_duration"])
940
client["checker_command"] = section["checker"]
941
client["last_approval_request"] = None
942
client["last_checked_ok"] = None
943
client["last_checker_status"] = -2
944
945
return settings
946
947
def __init__(self, settings, name=None, server_settings=None):
356
948
self.name = name
357
if config is None:
358
config = {}
949
if server_settings is None:
950
server_settings = {}
951
self.server_settings = server_settings
952
# adding all client settings
953
for setting, value in settings.items():
954
setattr(self, setting, value)
955
956
if self.enabled:
957
if not hasattr(self, "last_enabled"):
958
self.last_enabled = datetime.datetime.utcnow()
959
if not hasattr(self, "expires"):
960
self.expires = (datetime.datetime.utcnow()
961
+ self.timeout)
962
else:
963
self.last_enabled = None
964
self.expires = None
965
359
966
logger.debug("Creating client %r", self.name)
360
# Uppercase and remove spaces from fingerprint for later
361
# comparison purposes with return value from the fingerprint()
362
# function
363
self.fingerprint = (config["fingerprint"].upper()
364
.replace(" ", ""))
967
logger.debug(" Key ID: %s", self.key_id)
365
968
logger.debug(" Fingerprint: %s", self.fingerprint)
366
if "secret" in config:
367
self.secret = config["secret"].decode("base64")
368
elif "secfile" in config:
369
with open(os.path.expanduser(os.path.expandvars
370
(config["secfile"])),
371
"rb") as secfile:
372
self.secret = secfile.read()
373
else:
374
raise TypeError("No secret or secfile for client %s"
375
% self.name)
376
self.host = config.get("host", "")
377
self.created = datetime.datetime.utcnow()
378
self.enabled = True
379
self.last_approval_request = None
380
self.last_enabled = datetime.datetime.utcnow()
381
self.last_checked_ok = None
382
self.last_checker_status = None
383
self.timeout = string_to_delta(config["timeout"])
384
self.extended_timeout = string_to_delta(config
385
["extended_timeout"])
386
self.interval = string_to_delta(config["interval"])
969
self.created = settings.get("created",
970
datetime.datetime.utcnow())
971
972
# attributes specific for this server instance
387
973
self.checker = None
388
974
self.checker_initiator_tag = None
389
975
self.disable_initiator_tag = None
390
self.expires = datetime.datetime.utcnow() + self.timeout
391
976
self.checker_callback_tag = None
392
self.checker_command = config["checker"]
393
977
self.current_checker_command = None
394
self._approved = None
395
self.approved_by_default = config.get("approved_by_default",
396
True)
978
self.approved = None
397
979
self.approvals_pending = 0
398
self.approval_delay = string_to_delta(
399
config["approval_delay"])
400
self.approval_duration = string_to_delta(
401
config["approval_duration"])
402
self.changedstate = (multiprocessing_manager
403
.Condition(multiprocessing_manager
404
.Lock()))
405
self.client_structure = [attr for attr in self.__dict__.iterkeys() if not attr.startswith("_")]
980
self.changedstate = multiprocessing_manager.Condition(
981
multiprocessing_manager.Lock())
982
self.client_structure = [attr
983
for attr in self.__dict__.keys()
984
if not attr.startswith("_")]
406
985
self.client_structure.append("client_structure")
407
986
408
409
for name, t in inspect.getmembers(type(self),
410
lambda obj: isinstance(obj, property)):
987
for name, t in inspect.getmembers(
988
type(self), lambda obj: isinstance(obj, property)):
411
989
if not name.startswith("_"):
412
990
self.client_structure.append(name)
413
991
414
992
# Send notice to process children that client state has changed
415
993
def send_changedstate(self):
416
994
with self.changedstate:
417
995
self.changedstate.notify_all()
418
996
419
997
def enable(self):
420
998
"""Start this client's checker and timeout hooks"""
421
999
if getattr(self, "enabled", False):
422
1000
# Already enabled
423
1001
return
424
self.send_changedstate()
425
1002
self.expires = datetime.datetime.utcnow() + self.timeout
426
1003
self.enabled = True
427
1004
self.last_enabled = datetime.datetime.utcnow()
428
1005
self.init_checker()
429
1006
self.send_changedstate()
1007
430
1008
def disable(self, quiet=True):
431
1009
"""Disable this client."""
432
1010
if not getattr(self, "enabled", False):
433
1011
return False
434
1012
if not quiet:
435
self.send_changedstate()
436
if not quiet:
437
1013
logger.info("Disabling client %s", self.name)
438
if getattr(self, "disable_initiator_tag", False):
439
gobject.source_remove(self.disable_initiator_tag)
1014
if getattr(self, "disable_initiator_tag", None) is not None:
1015
GLib.source_remove(self.disable_initiator_tag)
440
1016
self.disable_initiator_tag = None
441
1017
self.expires = None
442
if getattr(self, "checker_initiator_tag", False):
443
gobject.source_remove(self.checker_initiator_tag)
1018
if getattr(self, "checker_initiator_tag", None) is not None:
1019
GLib.source_remove(self.checker_initiator_tag)
444
1020
self.checker_initiator_tag = None
445
1021
self.stop_checker()
446
1022
self.enabled = False
447
# Do not run this again if called by a gobject.timeout_add
1023
if not quiet:
1024
self.send_changedstate()
1025
# Do not run this again if called by a GLib.timeout_add
448
1026
return False
449
1027
450
1028
def __del__(self):
451
1029
self.disable()
452
1030
453
1031
def init_checker(self):
454
1032
# Schedule a new checker to be started an 'interval' from now,
455
1033
# and every interval from then on.
456
self.checker_initiator_tag = (gobject.timeout_add
457
(self.interval_milliseconds(),
458
self.start_checker))
1034
if self.checker_initiator_tag is not None:
1035
GLib.source_remove(self.checker_initiator_tag)
1036
self.checker_initiator_tag = GLib.timeout_add(
1037
int(self.interval.total_seconds() * 1000),
1038
self.start_checker)
459
1039
# Schedule a disable() when 'timeout' has passed
460
self.disable_initiator_tag = (gobject.timeout_add
461
(self.timeout_milliseconds(),
462
self.disable))
1040
if self.disable_initiator_tag is not None:
1041
GLib.source_remove(self.disable_initiator_tag)
1042
self.disable_initiator_tag = GLib.timeout_add(
1043
int(self.timeout.total_seconds() * 1000), self.disable)
463
1044
# Also start a new checker *right now*.
464
1045
self.start_checker()
465
1046
466
467
def checker_callback(self, pid, condition, command):
1047
def checker_callback(self, source, condition, connection,
1048
command):
468
1049
"""The checker has completed, so take appropriate actions."""
469
1050
self.checker_callback_tag = None
470
1051
self.checker = None
471
if os.WIFEXITED(condition):
472
self.last_checker_status = os.WEXITSTATUS(condition)
1052
# Read return code from connection (see call_pipe)
1053
returncode = connection.recv()
1054
connection.close()
1055
1056
if returncode >= 0:
1057
self.last_checker_status = returncode
1058
self.last_checker_signal = None
473
1059
if self.last_checker_status == 0:
474
1060
logger.info("Checker for %(name)s succeeded",
475
1061
vars(self))
476
1062
self.checked_ok()
477
1063
else:
478
logger.info("Checker for %(name)s failed",
479
vars(self))
1064
logger.info("Checker for %(name)s failed", vars(self))
480
1065
else:
481
1066
self.last_checker_status = -1
1067
self.last_checker_signal = -returncode
482
1068
logger.warning("Checker for %(name)s crashed?",
483
1069
vars(self))
484
485
def checked_ok(self, timeout=None):
486
"""Bump up the timeout for this client.
487
488
This should only be called when the client has been seen,
489
alive and well.
490
"""
1070
return False
1071
1072
def checked_ok(self):
1073
"""Assert that the client has been seen, alive and well."""
1074
self.last_checked_ok = datetime.datetime.utcnow()
1075
self.last_checker_status = 0
1076
self.last_checker_signal = None
1077
self.bump_timeout()
1078
1079
def bump_timeout(self, timeout=None):
1080
"""Bump up the timeout for this client."""
491
1081
if timeout is None:
492
1082
timeout = self.timeout
493
self.last_checked_ok = datetime.datetime.utcnow()
494
1083
if self.disable_initiator_tag is not None:
495
gobject.source_remove(self.disable_initiator_tag)
1084
GLib.source_remove(self.disable_initiator_tag)
1085
self.disable_initiator_tag = None
496
1086
if getattr(self, "enabled", False):
497
self.disable_initiator_tag = (gobject.timeout_add
498
(_timedelta_to_milliseconds
499
(timeout), self.disable))
1087
self.disable_initiator_tag = GLib.timeout_add(
1088
int(timeout.total_seconds() * 1000), self.disable)
500
1089
self.expires = datetime.datetime.utcnow() + timeout
501
1090
502
1091
def need_approval(self):
503
1092
self.last_approval_request = datetime.datetime.utcnow()
504
1093
505
1094
def start_checker(self):
506
1095
"""Start a new checker subprocess if one is not running.
507
1096
508
1097
If a checker already exists, leave it running and do
509
1098
nothing."""
510
1099
# The reason for not killing a running checker is that if we
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
1100
# did that, and if a checker (for some reason) started running
1101
# slowly and taking more than 'interval' time, then the client
1102
# would inevitably timeout, since no checker would get a
1103
# chance to run to completion. If we instead leave running
515
1104
# checkers alone, the checker would have to take more time
516
1105
# than 'timeout' for the client to be disabled, which is as it
517
1106
# should be.
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)
1107
1108
if self.checker is not None and not self.checker.is_alive():
1109
logger.warning("Checker was not alive; joining")
1110
self.checker.join()
1111
self.checker = None
532
1112
# Start a new checker if needed
533
1113
if self.checker is None:
1114
# Escape attributes for the shell
1115
escaped_attrs = {
1116
attr: re.escape(str(getattr(self, attr)))
1117
for attr in self.runtime_expansions}
534
1118
try:
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
1119
command = self.checker_command % escaped_attrs
1120
except TypeError as error:
1121
logger.error('Could not format string "%s"',
1122
self.checker_command,
1123
exc_info=error)
1124
return True # Try again later
553
1125
self.current_checker_command = command
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
1126
logger.info("Starting checker %r for %s", command,
1127
self.name)
1128
# We don't need to redirect stdout and stderr, since
1129
# in normal mode, that is already done by daemon(),
1130
# and in debug mode we don't want to. (Stdin is
1131
# always replaced by /dev/null.)
1132
# The exception is when not debugging but nevertheless
1133
# running in the foreground; use the previously
1134
# created wnull.
1135
popen_args = {"close_fds": True,
1136
"shell": True,
1137
"cwd": "/"}
1138
if (not self.server_settings["debug"]
1139
and self.server_settings["foreground"]):
1140
popen_args.update({"stdout": wnull,
1141
"stderr": wnull})
1142
pipe = multiprocessing.Pipe(duplex=False)
1143
self.checker = multiprocessing.Process(
1144
target=call_pipe,
1145
args=(pipe[1], subprocess.call, command),
1146
kwargs=popen_args)
1147
self.checker.start()
1148
self.checker_callback_tag = GLib.io_add_watch(
1149
pipe[0].fileno(), GLib.IO_IN,
1150
self.checker_callback, pipe[0], command)
1151
# Re-run this periodically if run by GLib.timeout_add
578
1152
return True
579
1153
580
1154
def stop_checker(self):
581
1155
"""Force the checker process, if any, to stop."""
582
1156
if self.checker_callback_tag:
583
gobject.source_remove(self.checker_callback_tag)
1157
GLib.source_remove(self.checker_callback_tag)
584
1158
self.checker_callback_tag = None
585
1159
if getattr(self, "checker", None) is None:
586
1160
return
587
1161
logger.debug("Stopping checker for %(name)s", vars(self))
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
1162
self.checker.terminate()
596
1163
self.checker = None
597
1164
598
# Encrypts a client secret and stores it in a varible encrypted_secret
599
def encrypt_secret(self, key):
600
# Encryption-key need to be of a specific size, so we hash inputed key
601
hasheng = hashlib.sha256()
602
hasheng.update(key)
603
encryptionkey = hasheng.digest()
604
605
# Create validation hash so we know at decryption if it was sucessful
606
hasheng = hashlib.sha256()
607
hasheng.update(self.secret)
608
validationhash = hasheng.digest()
609
610
# Encrypt secret
611
iv = os.urandom(Crypto.Cipher.AES.block_size)
612
ciphereng = Crypto.Cipher.AES.new(encryptionkey,
613
Crypto.Cipher.AES.MODE_CFB, iv)
614
ciphertext = ciphereng.encrypt(validationhash+self.secret)
615
self.encrypted_secret = (ciphertext, iv)
616
617
# Decrypt a encrypted client secret
618
def decrypt_secret(self, key):
619
# Decryption-key need to be of a specific size, so we hash inputed key
620
hasheng = hashlib.sha256()
621
hasheng.update(key)
622
encryptionkey = hasheng.digest()
623
624
# Decrypt encrypted secret
625
ciphertext, iv = self.encrypted_secret
626
ciphereng = Crypto.Cipher.AES.new(encryptionkey,
627
Crypto.Cipher.AES.MODE_CFB, iv)
628
plain = ciphereng.decrypt(ciphertext)
629
630
# Validate decrypted secret to know if it was succesful
631
hasheng = hashlib.sha256()
632
validationhash = plain[:hasheng.digest_size]
633
secret = plain[hasheng.digest_size:]
634
hasheng.update(secret)
635
636
# if validation fails, we use key as new secret. Otherwhise, we use
637
# the decrypted secret
638
if hasheng.digest() == validationhash:
639
self.secret = secret
640
else:
641
self.secret = key
642
del self.encrypted_secret
643
644
645
def dbus_service_property(dbus_interface, signature="v",
646
access="readwrite", byte_arrays=False):
1165
1166
def dbus_service_property(dbus_interface,
1167
signature="v",
1168
access="readwrite",
1169
byte_arrays=False):
647
1170
"""Decorators for marking methods of a DBusObjectWithProperties to
648
1171
become properties on the D-Bus.
649
1172
650
1173
The decorated method will be called with no arguments by "Get"
651
1174
and with one argument by "Set".
652
1175
653
1176
The parameters, where they are supported, are the same as
654
1177
dbus.service.method, except there is only "signature", since the
655
1178
type from Get() and the type sent to Set() is the same.
658
1181
# "Set" method, so we fail early here:
659
1182
if byte_arrays and signature != "ay":
660
1183
raise ValueError("Byte arrays not supported for non-'ay'"
661
" signature %r" % signature)
1184
" signature {!r}".format(signature))
1185
662
1186
def decorator(func):
663
1187
func._dbus_is_property = True
664
1188
func._dbus_interface = dbus_interface
667
1191
func._dbus_name = func.__name__
668
1192
if func._dbus_name.endswith("_dbus_property"):
669
1193
func._dbus_name = func._dbus_name[:-14]
670
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
671
return func
1194
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
1195
return func
1196
1197
return decorator
1198
1199
1200
def dbus_interface_annotations(dbus_interface):
1201
"""Decorator for marking functions returning interface annotations
1202
1203
Usage:
1204
1205
@dbus_interface_annotations("org.example.Interface")
1206
def _foo(self): # Function name does not matter
1207
return {"org.freedesktop.DBus.Deprecated": "true",
1208
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1209
"false"}
1210
"""
1211
1212
def decorator(func):
1213
func._dbus_is_interface = True
1214
func._dbus_interface = dbus_interface
1215
func._dbus_name = dbus_interface
1216
return func
1217
1218
return decorator
1219
1220
1221
def dbus_annotations(annotations):
1222
"""Decorator to annotate D-Bus methods, signals or properties
1223
Usage:
1224
1225
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1226
"org.freedesktop.DBus.Property."
1227
"EmitsChangedSignal": "false"})
1228
@dbus_service_property("org.example.Interface", signature="b",
1229
access="r")
1230
def Property_dbus_property(self):
1231
return dbus.Boolean(False)
1232
1233
See also the DBusObjectWithAnnotations class.
1234
"""
1235
1236
def decorator(func):
1237
func._dbus_annotations = annotations
1238
return func
1239
672
1240
return decorator
673
1241
674
1242
675
1243
class DBusPropertyException(dbus.exceptions.DBusException):
676
1244
"""A base class for D-Bus property-related exceptions
677
1245
"""
678
def __unicode__(self):
679
return unicode(str(self))
1246
pass
680
1247
681
1248
682
1249
class DBusPropertyAccessException(DBusPropertyException):
691
1258
pass
692
1259
693
1260
694
class DBusObjectWithProperties(dbus.service.Object):
1261
class DBusObjectWithAnnotations(dbus.service.Object):
1262
"""A D-Bus object with annotations.
1263
1264
Classes inheriting from this can use the dbus_annotations
1265
decorator to add annotations to methods or signals.
1266
"""
1267
1268
@staticmethod
1269
def _is_dbus_thing(thing):
1270
"""Returns a function testing if an attribute is a D-Bus thing
1271
1272
If called like _is_dbus_thing("method") it returns a function
1273
suitable for use as predicate to inspect.getmembers().
1274
"""
1275
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1276
False)
1277
1278
def _get_all_dbus_things(self, thing):
1279
"""Returns a generator of (name, attribute) pairs
1280
"""
1281
return ((getattr(athing.__get__(self), "_dbus_name", name),
1282
athing.__get__(self))
1283
for cls in self.__class__.__mro__
1284
for name, athing in
1285
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1286
1287
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1288
out_signature="s",
1289
path_keyword='object_path',
1290
connection_keyword='connection')
1291
def Introspect(self, object_path, connection):
1292
"""Overloading of standard D-Bus method.
1293
1294
Inserts annotation tags on methods and signals.
1295
"""
1296
xmlstring = dbus.service.Object.Introspect(self, object_path,
1297
connection)
1298
try:
1299
document = xml.dom.minidom.parseString(xmlstring)
1300
1301
for if_tag in document.getElementsByTagName("interface"):
1302
# Add annotation tags
1303
for typ in ("method", "signal"):
1304
for tag in if_tag.getElementsByTagName(typ):
1305
annots = dict()
1306
for name, prop in (self.
1307
_get_all_dbus_things(typ)):
1308
if (name == tag.getAttribute("name")
1309
and prop._dbus_interface
1310
== if_tag.getAttribute("name")):
1311
annots.update(getattr(
1312
prop, "_dbus_annotations", {}))
1313
for name, value in annots.items():
1314
ann_tag = document.createElement(
1315
"annotation")
1316
ann_tag.setAttribute("name", name)
1317
ann_tag.setAttribute("value", value)
1318
tag.appendChild(ann_tag)
1319
# Add interface annotation tags
1320
for annotation, value in dict(
1321
itertools.chain.from_iterable(
1322
annotations().items()
1323
for name, annotations
1324
in self._get_all_dbus_things("interface")
1325
if name == if_tag.getAttribute("name")
1326
)).items():
1327
ann_tag = document.createElement("annotation")
1328
ann_tag.setAttribute("name", annotation)
1329
ann_tag.setAttribute("value", value)
1330
if_tag.appendChild(ann_tag)
1331
# Fix argument name for the Introspect method itself
1332
if (if_tag.getAttribute("name")
1333
== dbus.INTROSPECTABLE_IFACE):
1334
for cn in if_tag.getElementsByTagName("method"):
1335
if cn.getAttribute("name") == "Introspect":
1336
for arg in cn.getElementsByTagName("arg"):
1337
if (arg.getAttribute("direction")
1338
== "out"):
1339
arg.setAttribute("name",
1340
"xml_data")
1341
xmlstring = document.toxml("utf-8")
1342
document.unlink()
1343
except (AttributeError, xml.dom.DOMException,
1344
xml.parsers.expat.ExpatError) as error:
1345
logger.error("Failed to override Introspection method",
1346
exc_info=error)
1347
return xmlstring
1348
1349
1350
class DBusObjectWithProperties(DBusObjectWithAnnotations):
695
1351
"""A D-Bus object with properties.
696
1352
697
1353
Classes inheriting from this can use the dbus_service_property
698
1354
decorator to expose methods as D-Bus properties. It exposes the
699
1355
standard Get(), Set(), and GetAll() methods on the D-Bus.
700
1356
"""
701
702
@staticmethod
703
def _is_dbus_property(obj):
704
return getattr(obj, "_dbus_is_property", False)
705
706
def _get_all_dbus_properties(self):
707
"""Returns a generator of (name, attribute) pairs
708
"""
709
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
710
for cls in self.__class__.__mro__
711
for name, prop in
712
inspect.getmembers(cls, self._is_dbus_property))
713
1357
714
1358
def _get_dbus_property(self, interface_name, property_name):
715
1359
"""Returns a bound method if one exists which is a D-Bus
716
1360
property with the specified name and interface.
717
1361
"""
718
for cls in self.__class__.__mro__:
719
for name, value in (inspect.getmembers
720
(cls, self._is_dbus_property)):
1362
for cls in self.__class__.__mro__:
1363
for name, value in inspect.getmembers(
1364
cls, self._is_dbus_thing("property")):
721
1365
if (value._dbus_name == property_name
722
1366
and value._dbus_interface == interface_name):
723
1367
return value.__get__(self)
724
1368
725
1369
# No such property
726
raise DBusPropertyNotFound(self.dbus_object_path + ":"
727
+ interface_name + "."
728
+ property_name)
729
730
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1370
raise DBusPropertyNotFound("{}:{}.{}".format(
1371
self.dbus_object_path, interface_name, property_name))
1372
1373
@classmethod
1374
def _get_all_interface_names(cls):
1375
"""Get a sequence of all interfaces supported by an object"""
1376
return (name for name in set(getattr(getattr(x, attr),
1377
"_dbus_interface", None)
1378
for x in (inspect.getmro(cls))
1379
for attr in dir(x))
1380
if name is not None)
1381
1382
@dbus.service.method(dbus.PROPERTIES_IFACE,
1383
in_signature="ss",
731
1384
out_signature="v")
732
1385
def Get(self, interface_name, property_name):
733
1386
"""Standard D-Bus property Get() method, see D-Bus standard.
739
1392
if not hasattr(value, "variant_level"):
740
1393
return value
741
1394
return type(value)(value, variant_level=value.variant_level+1)
742
1395
743
1396
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
744
1397
def Set(self, interface_name, property_name, value):
745
1398
"""Standard D-Bus property Set() method, see D-Bus standard.
751
1404
# The byte_arrays option is not supported yet on
752
1405
# signatures other than "ay".
753
1406
if prop._dbus_signature != "ay":
754
raise ValueError
755
value = dbus.ByteArray(''.join(unichr(byte)
756
for byte in value))
1407
raise ValueError("Byte arrays not supported for non-"
1408
"'ay' signature {!r}"
1409
.format(prop._dbus_signature))
1410
value = dbus.ByteArray(b''.join(chr(byte)
1411
for byte in value))
757
1412
prop(value)
758
759
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1413
1414
@dbus.service.method(dbus.PROPERTIES_IFACE,
1415
in_signature="s",
760
1416
out_signature="a{sv}")
761
1417
def GetAll(self, interface_name):
762
1418
"""Standard D-Bus property GetAll() method, see D-Bus
763
1419
standard.
764
1420
765
1421
Note: Will not include properties with access="write".
766
1422
"""
767
all = {}
768
for name, prop in self._get_all_dbus_properties():
1423
properties = {}
1424
for name, prop in self._get_all_dbus_things("property"):
769
1425
if (interface_name
770
1426
and interface_name != prop._dbus_interface):
771
1427
# Interface non-empty but did not match
775
1431
continue
776
1432
value = prop()
777
1433
if not hasattr(value, "variant_level"):
778
all[name] = value
1434
properties[name] = value
779
1435
continue
780
all[name] = type(value)(value, variant_level=
781
value.variant_level+1)
782
return dbus.Dictionary(all, signature="sv")
783
1436
properties[name] = type(value)(
1437
value, variant_level=value.variant_level + 1)
1438
return dbus.Dictionary(properties, signature="sv")
1439
1440
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1441
def PropertiesChanged(self, interface_name, changed_properties,
1442
invalidated_properties):
1443
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1444
standard.
1445
"""
1446
pass
1447
784
1448
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
785
1449
out_signature="s",
786
1450
path_keyword='object_path',
787
1451
connection_keyword='connection')
788
1452
def Introspect(self, object_path, connection):
789
"""Standard D-Bus method, overloaded to insert property tags.
1453
"""Overloading of standard D-Bus method.
1454
1455
Inserts property tags and interface annotation tags.
790
1456
"""
791
xmlstring = dbus.service.Object.Introspect(self, object_path,
792
connection)
1457
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1458
object_path,
1459
connection)
793
1460
try:
794
1461
document = xml.dom.minidom.parseString(xmlstring)
1462
795
1463
def make_tag(document, name, prop):
796
1464
e = document.createElement("property")
797
1465
e.setAttribute("name", name)
798
1466
e.setAttribute("type", prop._dbus_signature)
799
1467
e.setAttribute("access", prop._dbus_access)
800
1468
return e
1469
801
1470
for if_tag in document.getElementsByTagName("interface"):
1471
# Add property tags
802
1472
for tag in (make_tag(document, name, prop)
803
1473
for name, prop
804
in self._get_all_dbus_properties()
1474
in self._get_all_dbus_things("property")
805
1475
if prop._dbus_interface
806
1476
== if_tag.getAttribute("name")):
807
1477
if_tag.appendChild(tag)
1478
# Add annotation tags for properties
1479
for tag in if_tag.getElementsByTagName("property"):
1480
annots = dict()
1481
for name, prop in self._get_all_dbus_things(
1482
"property"):
1483
if (name == tag.getAttribute("name")
1484
and prop._dbus_interface
1485
== if_tag.getAttribute("name")):
1486
annots.update(getattr(
1487
prop, "_dbus_annotations", {}))
1488
for name, value in annots.items():
1489
ann_tag = document.createElement(
1490
"annotation")
1491
ann_tag.setAttribute("name", name)
1492
ann_tag.setAttribute("value", value)
1493
tag.appendChild(ann_tag)
808
1494
# Add the names to the return values for the
809
1495
# "org.freedesktop.DBus.Properties" methods
810
1496
if (if_tag.getAttribute("name")
825
1511
except (AttributeError, xml.dom.DOMException,
826
1512
xml.parsers.expat.ExpatError) as error:
827
1513
logger.error("Failed to override Introspection method",
828
error)
829
return xmlstring
830
831
832
def datetime_to_dbus (dt, variant_level=0):
1514
exc_info=error)
1515
return xmlstring
1516
1517
1518
try:
1519
dbus.OBJECT_MANAGER_IFACE
1520
except AttributeError:
1521
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1522
1523
1524
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1525
"""A D-Bus object with an ObjectManager.
1526
1527
Classes inheriting from this exposes the standard
1528
GetManagedObjects call and the InterfacesAdded and
1529
InterfacesRemoved signals on the standard
1530
"org.freedesktop.DBus.ObjectManager" interface.
1531
1532
Note: No signals are sent automatically; they must be sent
1533
manually.
1534
"""
1535
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1536
out_signature="a{oa{sa{sv}}}")
1537
def GetManagedObjects(self):
1538
"""This function must be overridden"""
1539
raise NotImplementedError()
1540
1541
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1542
signature="oa{sa{sv}}")
1543
def InterfacesAdded(self, object_path, interfaces_and_properties):
1544
pass
1545
1546
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1547
def InterfacesRemoved(self, object_path, interfaces):
1548
pass
1549
1550
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1551
out_signature="s",
1552
path_keyword='object_path',
1553
connection_keyword='connection')
1554
def Introspect(self, object_path, connection):
1555
"""Overloading of standard D-Bus method.
1556
1557
Override return argument name of GetManagedObjects to be
1558
"objpath_interfaces_and_properties"
1559
"""
1560
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1561
object_path,
1562
connection)
1563
try:
1564
document = xml.dom.minidom.parseString(xmlstring)
1565
1566
for if_tag in document.getElementsByTagName("interface"):
1567
# Fix argument name for the GetManagedObjects method
1568
if (if_tag.getAttribute("name")
1569
== dbus.OBJECT_MANAGER_IFACE):
1570
for cn in if_tag.getElementsByTagName("method"):
1571
if (cn.getAttribute("name")
1572
== "GetManagedObjects"):
1573
for arg in cn.getElementsByTagName("arg"):
1574
if (arg.getAttribute("direction")
1575
== "out"):
1576
arg.setAttribute(
1577
"name",
1578
"objpath_interfaces"
1579
"_and_properties")
1580
xmlstring = document.toxml("utf-8")
1581
document.unlink()
1582
except (AttributeError, xml.dom.DOMException,
1583
xml.parsers.expat.ExpatError) as error:
1584
logger.error("Failed to override Introspection method",
1585
exc_info=error)
1586
return xmlstring
1587
1588
1589
def datetime_to_dbus(dt, variant_level=0):
833
1590
"""Convert a UTC datetime.datetime() to a D-Bus type."""
834
1591
if dt is None:
835
return dbus.String("", variant_level = variant_level)
836
return dbus.String(dt.isoformat(),
837
variant_level=variant_level)
838
839
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
840
.__metaclass__):
841
"""Applied to an empty subclass of a D-Bus object, this metaclass
842
will add additional D-Bus attributes matching a certain pattern.
1592
return dbus.String("", variant_level=variant_level)
1593
return dbus.String(dt.isoformat(), variant_level=variant_level)
1594
1595
1596
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1597
"""A class decorator; applied to a subclass of
1598
dbus.service.Object, it will add alternate D-Bus attributes with
1599
interface names according to the "alt_interface_names" mapping.
1600
Usage:
1601
1602
@alternate_dbus_interfaces({"org.example.Interface":
1603
"net.example.AlternateInterface"})
1604
class SampleDBusObject(dbus.service.Object):
1605
@dbus.service.method("org.example.Interface")
1606
def SampleDBusMethod():
1607
pass
1608
1609
The above "SampleDBusMethod" on "SampleDBusObject" will be
1610
reachable via two interfaces: "org.example.Interface" and
1611
"net.example.AlternateInterface", the latter of which will have
1612
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1613
"true", unless "deprecate" is passed with a False value.
1614
1615
This works for methods and signals, and also for D-Bus properties
1616
(from DBusObjectWithProperties) and interfaces (from the
1617
dbus_interface_annotations decorator).
843
1618
"""
844
def __new__(mcs, name, bases, attr):
845
# Go through all the base classes which could have D-Bus
846
# methods, signals, or properties in them
847
for base in (b for b in bases
848
if issubclass(b, dbus.service.Object)):
849
# Go though all attributes of the base class
850
for attrname, attribute in inspect.getmembers(base):
1619
1620
def wrapper(cls):
1621
for orig_interface_name, alt_interface_name in (
1622
alt_interface_names.items()):
1623
attr = {}
1624
interface_names = set()
1625
# Go though all attributes of the class
1626
for attrname, attribute in inspect.getmembers(cls):
851
1627
# Ignore non-D-Bus attributes, and D-Bus attributes
852
1628
# with the wrong interface name
853
1629
if (not hasattr(attribute, "_dbus_interface")
854
or not attribute._dbus_interface
855
.startswith("se.recompile.Mandos")):
1630
or not attribute._dbus_interface.startswith(
1631
orig_interface_name)):
856
1632
continue
857
1633
# Create an alternate D-Bus interface name based on
858
1634
# the current name
859
alt_interface = (attribute._dbus_interface
860
.replace("se.recompile.Mandos",
861
"se.bsnet.fukt.Mandos"))
1635
alt_interface = attribute._dbus_interface.replace(
1636
orig_interface_name, alt_interface_name)
1637
interface_names.add(alt_interface)
862
1638
# Is this a D-Bus signal?
863
1639
if getattr(attribute, "_dbus_is_signal", False):
864
# Extract the original non-method function by
865
# black magic
866
nonmethod_func = (dict(
1640
# Extract the original non-method undecorated
1641
# function by black magic
1642
if sys.version_info.major == 2:
1643
nonmethod_func = (dict(
867
1644
zip(attribute.func_code.co_freevars,
868
attribute.__closure__))["func"]
869
.cell_contents)
1645
attribute.__closure__))
1646
["func"].cell_contents)
1647
else:
1648
nonmethod_func = (dict(
1649
zip(attribute.__code__.co_freevars,
1650
attribute.__closure__))
1651
["func"].cell_contents)
870
1652
# Create a new, but exactly alike, function
871
1653
# object, and decorate it to be a new D-Bus signal
872
1654
# with the alternate D-Bus interface name
873
new_function = (dbus.service.signal
874
(alt_interface,
875
attribute._dbus_signature)
876
(types.FunctionType(
877
nonmethod_func.func_code,
878
nonmethod_func.func_globals,
879
nonmethod_func.func_name,
880
nonmethod_func.func_defaults,
881
nonmethod_func.func_closure)))
1655
new_function = copy_function(nonmethod_func)
1656
new_function = (dbus.service.signal(
1657
alt_interface,
1658
attribute._dbus_signature)(new_function))
1659
# Copy annotations, if any
1660
try:
1661
new_function._dbus_annotations = dict(
1662
attribute._dbus_annotations)
1663
except AttributeError:
1664
pass
1665
882
1666
# Define a creator of a function to call both the
883
# old and new functions, so both the old and new
884
# signals gets sent when the function is called
1667
# original and alternate functions, so both the
1668
# original and alternate signals gets sent when
1669
# the function is called
885
1670
def fixscope(func1, func2):
886
1671
"""This function is a scope container to pass
887
1672
func1 and func2 to the "call_both" function
888
1673
outside of its arguments"""
1674
1675
@functools.wraps(func2)
889
1676
def call_both(*args, **kwargs):
890
1677
"""This function will emit two D-Bus
891
1678
signals by calling func1 and func2"""
892
1679
func1(*args, **kwargs)
893
1680
func2(*args, **kwargs)
1681
# Make wrapper function look like a D-Bus
1682
# signal
1683
for name, attr in inspect.getmembers(func2):
1684
if name.startswith("_dbus_"):
1685
setattr(call_both, name, attr)
1686
894
1687
return call_both
895
1688
# Create the "call_both" function and add it to
896
1689
# the class
897
attr[attrname] = fixscope(attribute,
898
new_function)
1690
attr[attrname] = fixscope(attribute, new_function)
899
1691
# Is this a D-Bus method?
900
1692
elif getattr(attribute, "_dbus_is_method", False):
901
1693
# Create a new, but exactly alike, function
902
1694
# object. Decorate it to be a new D-Bus method
903
1695
# with the alternate D-Bus interface name. Add it
904
1696
# to the class.
905
attr[attrname] = (dbus.service.method
906
(alt_interface,
907
attribute._dbus_in_signature,
908
attribute._dbus_out_signature)
909
(types.FunctionType
910
(attribute.func_code,
911
attribute.func_globals,
912
attribute.func_name,
913
attribute.func_defaults,
914
attribute.func_closure)))
1697
attr[attrname] = (
1698
dbus.service.method(
1699
alt_interface,
1700
attribute._dbus_in_signature,
1701
attribute._dbus_out_signature)
1702
(copy_function(attribute)))
1703
# Copy annotations, if any
1704
try:
1705
attr[attrname]._dbus_annotations = dict(
1706
attribute._dbus_annotations)
1707
except AttributeError:
1708
pass
915
1709
# Is this a D-Bus property?
916
1710
elif getattr(attribute, "_dbus_is_property", False):
917
1711
# Create a new, but exactly alike, function
918
1712
# object, and decorate it to be a new D-Bus
919
1713
# property with the alternate D-Bus interface
920
1714
# name. Add it to the class.
921
attr[attrname] = (dbus_service_property
922
(alt_interface,
923
attribute._dbus_signature,
924
attribute._dbus_access,
925
attribute
926
._dbus_get_args_options
927
["byte_arrays"])
928
(types.FunctionType
929
(attribute.func_code,
930
attribute.func_globals,
931
attribute.func_name,
932
attribute.func_defaults,
933
attribute.func_closure)))
934
return type.__new__(mcs, name, bases, attr)
935
1715
attr[attrname] = (dbus_service_property(
1716
alt_interface, attribute._dbus_signature,
1717
attribute._dbus_access,
1718
attribute._dbus_get_args_options
1719
["byte_arrays"])
1720
(copy_function(attribute)))
1721
# Copy annotations, if any
1722
try:
1723
attr[attrname]._dbus_annotations = dict(
1724
attribute._dbus_annotations)
1725
except AttributeError:
1726
pass
1727
# Is this a D-Bus interface?
1728
elif getattr(attribute, "_dbus_is_interface", False):
1729
# Create a new, but exactly alike, function
1730
# object. Decorate it to be a new D-Bus interface
1731
# with the alternate D-Bus interface name. Add it
1732
# to the class.
1733
attr[attrname] = (
1734
dbus_interface_annotations(alt_interface)
1735
(copy_function(attribute)))
1736
if deprecate:
1737
# Deprecate all alternate interfaces
1738
iname = "_AlternateDBusNames_interface_annotation{}"
1739
for interface_name in interface_names:
1740
1741
@dbus_interface_annotations(interface_name)
1742
def func(self):
1743
return {"org.freedesktop.DBus.Deprecated":
1744
"true"}
1745
# Find an unused name
1746
for aname in (iname.format(i)
1747
for i in itertools.count()):
1748
if aname not in attr:
1749
attr[aname] = func
1750
break
1751
if interface_names:
1752
# Replace the class with a new subclass of it with
1753
# methods, signals, etc. as created above.
1754
if sys.version_info.major == 2:
1755
cls = type(b"{}Alternate".format(cls.__name__),
1756
(cls, ), attr)
1757
else:
1758
cls = type("{}Alternate".format(cls.__name__),
1759
(cls, ), attr)
1760
return cls
1761
1762
return wrapper
1763
1764
1765
@alternate_dbus_interfaces({"se.recompile.Mandos":
1766
"se.bsnet.fukt.Mandos"})
936
1767
class ClientDBus(Client, DBusObjectWithProperties):
937
1768
"""A Client class using D-Bus
938
1769
939
1770
Attributes:
940
1771
dbus_object_path: dbus.ObjectPath
941
1772
bus: dbus.SystemBus()
942
1773
"""
943
1774
944
1775
runtime_expansions = (Client.runtime_expansions
945
+ ("dbus_object_path",))
946
1776
+ ("dbus_object_path", ))
1777
1778
_interface = "se.recompile.Mandos.Client"
1779
947
1780
# dbus.service.Object doesn't use super(), so we can't either.
948
949
def __init__(self, bus = None, *args, **kwargs):
1781
1782
def __init__(self, bus=None, *args, **kwargs):
950
1783
self.bus = bus
951
1784
Client.__init__(self, *args, **kwargs)
952
953
self._approvals_pending = 0
954
1785
# Only now, when this client is initialized, can it show up on
955
1786
# the D-Bus
956
client_object_name = unicode(self.name).translate(
1787
client_object_name = str(self.name).translate(
957
1788
{ord("."): ord("_"),
958
1789
ord("-"): ord("_")})
959
self.dbus_object_path = (dbus.ObjectPath
960
("/clients/" + client_object_name))
1790
self.dbus_object_path = dbus.ObjectPath(
1791
"/clients/" + client_object_name)
961
1792
DBusObjectWithProperties.__init__(self, self.bus,
962
1793
self.dbus_object_path)
963
964
def notifychangeproperty(transform_func,
965
dbus_name, type_func=lambda x: x,
966
variant_level=1):
1794
1795
def notifychangeproperty(transform_func, dbus_name,
1796
type_func=lambda x: x,
1797
variant_level=1,
1798
invalidate_only=False,
1799
_interface=_interface):
967
1800
""" Modify a variable so that it's a property which announces
968
1801
its changes to DBus.
969
1802
974
1807
to the D-Bus. Default: no transform
975
1808
variant_level: D-Bus variant level. Default: 1
976
1809
"""
977
attrname = "_{0}".format(dbus_name)
1810
attrname = "_{}".format(dbus_name)
1811
978
1812
def setter(self, value):
979
1813
if hasattr(self, "dbus_object_path"):
980
1814
if (not hasattr(self, attrname) or
981
1815
type_func(getattr(self, attrname, None))
982
1816
!= type_func(value)):
983
dbus_value = transform_func(type_func(value),
984
variant_level
985
=variant_level)
986
self.PropertyChanged(dbus.String(dbus_name),
987
dbus_value)
1817
if invalidate_only:
1818
self.PropertiesChanged(
1819
_interface, dbus.Dictionary(),
1820
dbus.Array((dbus_name, )))
1821
else:
1822
dbus_value = transform_func(
1823
type_func(value),
1824
variant_level=variant_level)
1825
self.PropertyChanged(dbus.String(dbus_name),
1826
dbus_value)
1827
self.PropertiesChanged(
1828
_interface,
1829
dbus.Dictionary({dbus.String(dbus_name):
1830
dbus_value}),
1831
dbus.Array())
988
1832
setattr(self, attrname, value)
989
1833
990
1834
return property(lambda self: getattr(self, attrname), setter)
991
992
1835
993
1836
expires = notifychangeproperty(datetime_to_dbus, "Expires")
994
1837
approvals_pending = notifychangeproperty(dbus.Boolean,
995
1838
"ApprovalPending",
996
type_func = bool)
1839
type_func=bool)
997
1840
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
998
1841
last_enabled = notifychangeproperty(datetime_to_dbus,
999
1842
"LastEnabled")
1000
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1001
type_func = lambda checker:
1002
checker is not None)
1843
checker = notifychangeproperty(
1844
dbus.Boolean, "CheckerRunning",
1845
type_func=lambda checker: checker is not None)
1003
1846
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1004
1847
"LastCheckedOK")
1848
last_checker_status = notifychangeproperty(dbus.Int16,
1849
"LastCheckerStatus")
1005
1850
last_approval_request = notifychangeproperty(
1006
1851
datetime_to_dbus, "LastApprovalRequest")
1007
1852
approved_by_default = notifychangeproperty(dbus.Boolean,
1008
1853
"ApprovedByDefault")
1009
approval_delay = notifychangeproperty(dbus.UInt16,
1010
"ApprovalDelay",
1011
type_func =
1012
_timedelta_to_milliseconds)
1854
approval_delay = notifychangeproperty(
1855
dbus.UInt64, "ApprovalDelay",
1856
type_func=lambda td: td.total_seconds() * 1000)
1013
1857
approval_duration = notifychangeproperty(
1014
dbus.UInt16, "ApprovalDuration",
1015
type_func = _timedelta_to_milliseconds)
1858
dbus.UInt64, "ApprovalDuration",
1859
type_func=lambda td: td.total_seconds() * 1000)
1016
1860
host = notifychangeproperty(dbus.String, "Host")
1017
timeout = notifychangeproperty(dbus.UInt16, "Timeout",
1018
type_func =
1019
_timedelta_to_milliseconds)
1861
timeout = notifychangeproperty(
1862
dbus.UInt64, "Timeout",
1863
type_func=lambda td: td.total_seconds() * 1000)
1020
1864
extended_timeout = notifychangeproperty(
1021
dbus.UInt16, "ExtendedTimeout",
1022
type_func = _timedelta_to_milliseconds)
1023
interval = notifychangeproperty(dbus.UInt16,
1024
"Interval",
1025
type_func =
1026
_timedelta_to_milliseconds)
1865
dbus.UInt64, "ExtendedTimeout",
1866
type_func=lambda td: td.total_seconds() * 1000)
1867
interval = notifychangeproperty(
1868
dbus.UInt64, "Interval",
1869
type_func=lambda td: td.total_seconds() * 1000)
1027
1870
checker_command = notifychangeproperty(dbus.String, "Checker")
1028
1871
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1872
invalidate_only=True)
1873
1029
1874
del notifychangeproperty
1030
1875
1031
1876
def __del__(self, *args, **kwargs):
1032
1877
try:
1033
1878
self.remove_from_connection()
1036
1881
if hasattr(DBusObjectWithProperties, "__del__"):
1037
1882
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1038
1883
Client.__del__(self, *args, **kwargs)
1039
1040
def checker_callback(self, pid, condition, command,
1041
*args, **kwargs):
1042
self.checker_callback_tag = None
1043
self.checker = None
1044
if os.WIFEXITED(condition):
1045
exitstatus = os.WEXITSTATUS(condition)
1884
1885
def checker_callback(self, source, condition,
1886
connection, command, *args, **kwargs):
1887
ret = Client.checker_callback(self, source, condition,
1888
connection, command, *args,
1889
**kwargs)
1890
exitstatus = self.last_checker_status
1891
if exitstatus >= 0:
1046
1892
# Emit D-Bus signal
1047
1893
self.CheckerCompleted(dbus.Int16(exitstatus),
1048
dbus.Int64(condition),
1894
# This is specific to GNU libC
1895
dbus.Int64(exitstatus << 8),
1049
1896
dbus.String(command))
1050
1897
else:
1051
1898
# Emit D-Bus signal
1052
1899
self.CheckerCompleted(dbus.Int16(-1),
1053
dbus.Int64(condition),
1900
dbus.Int64(
1901
# This is specific to GNU libC
1902
(exitstatus << 8)
1903
| self.last_checker_signal),
1054
1904
dbus.String(command))
1055
1056
return Client.checker_callback(self, pid, condition, command,
1057
*args, **kwargs)
1058
1905
return ret
1906
1059
1907
def start_checker(self, *args, **kwargs):
1060
old_checker = self.checker
1061
if self.checker is not None:
1062
old_checker_pid = self.checker.pid
1063
else:
1064
old_checker_pid = None
1908
old_checker_pid = getattr(self.checker, "pid", None)
1065
1909
r = Client.start_checker(self, *args, **kwargs)
1066
1910
# Only if new checker process was started
1067
1911
if (self.checker is not None
1069
1913
# Emit D-Bus signal
1070
1914
self.CheckerStarted(self.current_checker_command)
1071
1915
return r
1072
1916
1073
1917
def _reset_approved(self):
1074
self._approved = None
1918
self.approved = None
1075
1919
return False
1076
1920
1077
1921
def approve(self, value=True):
1922
self.approved = value
1923
GLib.timeout_add(int(self.approval_duration.total_seconds()
1924
* 1000), self._reset_approved)
1078
1925
self.send_changedstate()
1079
self._approved = value
1080
gobject.timeout_add(_timedelta_to_milliseconds
1081
(self.approval_duration),
1082
self._reset_approved)
1083
1084
1085
## D-Bus methods, signals & properties
1086
_interface = "se.recompile.Mandos.Client"
1087
1088
## Signals
1089
1926
1927
# D-Bus methods, signals & properties
1928
1929
# Interfaces
1930
1931
# Signals
1932
1090
1933
# CheckerCompleted - signal
1091
1934
@dbus.service.signal(_interface, signature="nxs")
1092
1935
def CheckerCompleted(self, exitcode, waitstatus, command):
1093
1936
"D-Bus signal"
1094
1937
pass
1095
1938
1096
1939
# CheckerStarted - signal
1097
1940
@dbus.service.signal(_interface, signature="s")
1098
1941
def CheckerStarted(self, command):
1099
1942
"D-Bus signal"
1100
1943
pass
1101
1944
1102
1945
# PropertyChanged - signal
1946
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1103
1947
@dbus.service.signal(_interface, signature="sv")
1104
1948
def PropertyChanged(self, property, value):
1105
1949
"D-Bus signal"
1106
1950
pass
1107
1951
1108
1952
# GotSecret - signal
1109
1953
@dbus.service.signal(_interface)
1110
1954
def GotSecret(self):
1113
1957
server to mandos-client
1114
1958
"""
1115
1959
pass
1116
1960
1117
1961
# Rejected - signal
1118
1962
@dbus.service.signal(_interface, signature="s")
1119
1963
def Rejected(self, reason):
1120
1964
"D-Bus signal"
1121
1965
pass
1122
1966
1123
1967
# NeedApproval - signal
1124
1968
@dbus.service.signal(_interface, signature="tb")
1125
1969
def NeedApproval(self, timeout, default):
1126
1970
"D-Bus signal"
1127
1971
return self.need_approval()
1128
1129
# NeRwequest - signal
1130
@dbus.service.signal(_interface, signature="s")
1131
def NewRequest(self, ip):
1132
"""D-Bus signal
1133
Is sent after a client request a password.
1134
"""
1135
pass
1136
1137
## Methods
1138
1972
1973
# Methods
1974
1139
1975
# Approve - method
1140
1976
@dbus.service.method(_interface, in_signature="b")
1141
1977
def Approve(self, value):
1142
1978
self.approve(value)
1143
1979
1144
1980
# CheckedOK - method
1145
1981
@dbus.service.method(_interface)
1146
1982
def CheckedOK(self):
1147
1983
self.checked_ok()
1148
1984
1149
1985
# Enable - method
1986
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1150
1987
@dbus.service.method(_interface)
1151
1988
def Enable(self):
1152
1989
"D-Bus method"
1153
1990
self.enable()
1154
1991
1155
1992
# StartChecker - method
1993
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1156
1994
@dbus.service.method(_interface)
1157
1995
def StartChecker(self):
1158
1996
"D-Bus method"
1159
1997
self.start_checker()
1160
1998
1161
1999
# Disable - method
2000
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1162
2001
@dbus.service.method(_interface)
1163
2002
def Disable(self):
1164
2003
"D-Bus method"
1165
2004
self.disable()
1166
2005
1167
2006
# StopChecker - method
2007
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1168
2008
@dbus.service.method(_interface)
1169
2009
def StopChecker(self):
1170
2010
self.stop_checker()
1171
1172
## Properties
1173
2011
2012
# Properties
2013
1174
2014
# ApprovalPending - property
1175
2015
@dbus_service_property(_interface, signature="b", access="read")
1176
2016
def ApprovalPending_dbus_property(self):
1177
2017
return dbus.Boolean(bool(self.approvals_pending))
1178
2018
1179
2019
# ApprovedByDefault - property
1180
@dbus_service_property(_interface, signature="b",
2020
@dbus_service_property(_interface,
2021
signature="b",
1181
2022
access="readwrite")
1182
2023
def ApprovedByDefault_dbus_property(self, value=None):
1183
2024
if value is None: # get
1184
2025
return dbus.Boolean(self.approved_by_default)
1185
2026
self.approved_by_default = bool(value)
1186
2027
1187
2028
# ApprovalDelay - property
1188
@dbus_service_property(_interface, signature="t",
2029
@dbus_service_property(_interface,
2030
signature="t",
1189
2031
access="readwrite")
1190
2032
def ApprovalDelay_dbus_property(self, value=None):
1191
2033
if value is None: # get
1192
return dbus.UInt64(self.approval_delay_milliseconds())
2034
return dbus.UInt64(self.approval_delay.total_seconds()
2035
* 1000)
1193
2036
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1194
2037
1195
2038
# ApprovalDuration - property
1196
@dbus_service_property(_interface, signature="t",
2039
@dbus_service_property(_interface,
2040
signature="t",
1197
2041
access="readwrite")
1198
2042
def ApprovalDuration_dbus_property(self, value=None):
1199
2043
if value is None: # get
1200
return dbus.UInt64(_timedelta_to_milliseconds(
1201
self.approval_duration))
2044
return dbus.UInt64(self.approval_duration.total_seconds()
2045
* 1000)
1202
2046
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1203
2047
1204
2048
# Name - property
2049
@dbus_annotations(
2050
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1205
2051
@dbus_service_property(_interface, signature="s", access="read")
1206
2052
def Name_dbus_property(self):
1207
2053
return dbus.String(self.name)
1208
2054
2055
# KeyID - property
2056
@dbus_annotations(
2057
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2058
@dbus_service_property(_interface, signature="s", access="read")
2059
def KeyID_dbus_property(self):
2060
return dbus.String(self.key_id)
2061
1209
2062
# Fingerprint - property
2063
@dbus_annotations(
2064
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1210
2065
@dbus_service_property(_interface, signature="s", access="read")
1211
2066
def Fingerprint_dbus_property(self):
1212
2067
return dbus.String(self.fingerprint)
1213
2068
1214
2069
# Host - property
1215
@dbus_service_property(_interface, signature="s",
2070
@dbus_service_property(_interface,
2071
signature="s",
1216
2072
access="readwrite")
1217
2073
def Host_dbus_property(self, value=None):
1218
2074
if value is None: # get
1219
2075
return dbus.String(self.host)
1220
self.host = value
1221
2076
self.host = str(value)
2077
1222
2078
# Created - property
2079
@dbus_annotations(
2080
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1223
2081
@dbus_service_property(_interface, signature="s", access="read")
1224
2082
def Created_dbus_property(self):
1225
return dbus.String(datetime_to_dbus(self.created))
1226
2083
return datetime_to_dbus(self.created)
2084
1227
2085
# LastEnabled - property
1228
2086
@dbus_service_property(_interface, signature="s", access="read")
1229
2087
def LastEnabled_dbus_property(self):
1230
2088
return datetime_to_dbus(self.last_enabled)
1231
2089
1232
2090
# Enabled - property
1233
@dbus_service_property(_interface, signature="b",
2091
@dbus_service_property(_interface,
2092
signature="b",
1234
2093
access="readwrite")
1235
2094
def Enabled_dbus_property(self, value=None):
1236
2095
if value is None: # get
1239
2098
self.enable()
1240
2099
else:
1241
2100
self.disable()
1242
2101
1243
2102
# LastCheckedOK - property
1244
@dbus_service_property(_interface, signature="s",
2103
@dbus_service_property(_interface,
2104
signature="s",
1245
2105
access="readwrite")
1246
2106
def LastCheckedOK_dbus_property(self, value=None):
1247
2107
if value is not None:
1248
2108
self.checked_ok()
1249
2109
return
1250
2110
return datetime_to_dbus(self.last_checked_ok)
1251
2111
2112
# LastCheckerStatus - property
2113
@dbus_service_property(_interface, signature="n", access="read")
2114
def LastCheckerStatus_dbus_property(self):
2115
return dbus.Int16(self.last_checker_status)
2116
1252
2117
# Expires - property
1253
2118
@dbus_service_property(_interface, signature="s", access="read")
1254
2119
def Expires_dbus_property(self):
1255
2120
return datetime_to_dbus(self.expires)
1256
2121
1257
2122
# LastApprovalRequest - property
1258
2123
@dbus_service_property(_interface, signature="s", access="read")
1259
2124
def LastApprovalRequest_dbus_property(self):
1260
2125
return datetime_to_dbus(self.last_approval_request)
1261
2126
1262
2127
# Timeout - property
1263
@dbus_service_property(_interface, signature="t",
2128
@dbus_service_property(_interface,
2129
signature="t",
1264
2130
access="readwrite")
1265
2131
def Timeout_dbus_property(self, value=None):
1266
2132
if value is None: # get
1267
return dbus.UInt64(self.timeout_milliseconds())
2133
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2134
old_timeout = self.timeout
1268
2135
self.timeout = datetime.timedelta(0, 0, 0, value)
1269
if getattr(self, "disable_initiator_tag", None) is None:
1270
return
1271
# Reschedule timeout
1272
gobject.source_remove(self.disable_initiator_tag)
1273
self.disable_initiator_tag = None
1274
self.expires = None
1275
time_to_die = _timedelta_to_milliseconds((self
1276
.last_checked_ok
1277
+ self.timeout)
1278
- datetime.datetime
1279
.utcnow())
1280
if time_to_die <= 0:
1281
# The timeout has passed
1282
self.disable()
1283
else:
1284
self.expires = (datetime.datetime.utcnow()
1285
+ datetime.timedelta(milliseconds =
1286
time_to_die))
1287
self.disable_initiator_tag = (gobject.timeout_add
1288
(time_to_die, self.disable))
1289
2136
# Reschedule disabling
2137
if self.enabled:
2138
now = datetime.datetime.utcnow()
2139
self.expires += self.timeout - old_timeout
2140
if self.expires <= now:
2141
# The timeout has passed
2142
self.disable()
2143
else:
2144
if (getattr(self, "disable_initiator_tag", None)
2145
is None):
2146
return
2147
GLib.source_remove(self.disable_initiator_tag)
2148
self.disable_initiator_tag = GLib.timeout_add(
2149
int((self.expires - now).total_seconds() * 1000),
2150
self.disable)
2151
1290
2152
# ExtendedTimeout - property
1291
@dbus_service_property(_interface, signature="t",
2153
@dbus_service_property(_interface,
2154
signature="t",
1292
2155
access="readwrite")
1293
2156
def ExtendedTimeout_dbus_property(self, value=None):
1294
2157
if value is None: # get
1295
return dbus.UInt64(self.extended_timeout_milliseconds())
2158
return dbus.UInt64(self.extended_timeout.total_seconds()
2159
* 1000)
1296
2160
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1297
2161
1298
2162
# Interval - property
1299
@dbus_service_property(_interface, signature="t",
2163
@dbus_service_property(_interface,
2164
signature="t",
1300
2165
access="readwrite")
1301
2166
def Interval_dbus_property(self, value=None):
1302
2167
if value is None: # get
1303
return dbus.UInt64(self.interval_milliseconds())
2168
return dbus.UInt64(self.interval.total_seconds() * 1000)
1304
2169
self.interval = datetime.timedelta(0, 0, 0, value)
1305
2170
if getattr(self, "checker_initiator_tag", None) is None:
1306
2171
return
1307
# Reschedule checker run
1308
gobject.source_remove(self.checker_initiator_tag)
1309
self.checker_initiator_tag = (gobject.timeout_add
1310
(value, self.start_checker))
1311
self.start_checker() # Start one now, too
1312
2172
if self.enabled:
2173
# Reschedule checker run
2174
GLib.source_remove(self.checker_initiator_tag)
2175
self.checker_initiator_tag = GLib.timeout_add(
2176
value, self.start_checker)
2177
self.start_checker() # Start one now, too
2178
1313
2179
# Checker - property
1314
@dbus_service_property(_interface, signature="s",
2180
@dbus_service_property(_interface,
2181
signature="s",
1315
2182
access="readwrite")
1316
2183
def Checker_dbus_property(self, value=None):
1317
2184
if value is None: # get
1318
2185
return dbus.String(self.checker_command)
1319
self.checker_command = value
1320
2186
self.checker_command = str(value)
2187
1321
2188
# CheckerRunning - property
1322
@dbus_service_property(_interface, signature="b",
2189
@dbus_service_property(_interface,
2190
signature="b",
1323
2191
access="readwrite")
1324
2192
def CheckerRunning_dbus_property(self, value=None):
1325
2193
if value is None: # get
1328
2196
self.start_checker()
1329
2197
else:
1330
2198
self.stop_checker()
1331
2199
1332
2200
# ObjectPath - property
2201
@dbus_annotations(
2202
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2203
"org.freedesktop.DBus.Deprecated": "true"})
1333
2204
@dbus_service_property(_interface, signature="o", access="read")
1334
2205
def ObjectPath_dbus_property(self):
1335
return self.dbus_object_path # is already a dbus.ObjectPath
1336
2206
return self.dbus_object_path # is already a dbus.ObjectPath
2207
1337
2208
# Secret = property
1338
@dbus_service_property(_interface, signature="ay",
1339
access="write", byte_arrays=True)
2209
@dbus_annotations(
2210
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2211
"invalidates"})
2212
@dbus_service_property(_interface,
2213
signature="ay",
2214
access="write",
2215
byte_arrays=True)
1340
2216
def Secret_dbus_property(self, value):
1341
self.secret = str(value)
1342
2217
self.secret = bytes(value)
2218
1343
2219
del _interface
1344
2220
1345
2221
1346
2222
class ProxyClient(object):
1347
def __init__(self, child_pipe, fpr, address):
2223
def __init__(self, child_pipe, key_id, fpr, address):
1348
2224
self._pipe = child_pipe
1349
self._pipe.send(('init', fpr, address))
2225
self._pipe.send(('init', key_id, fpr, address))
1350
2226
if not self._pipe.recv():
1351
raise KeyError()
1352
2227
raise KeyError(key_id or fpr)
2228
1353
2229
def __getattribute__(self, name):
1354
if(name == '_pipe'):
2230
if name == '_pipe':
1355
2231
return super(ProxyClient, self).__getattribute__(name)
1356
2232
self._pipe.send(('getattr', name))
1357
2233
data = self._pipe.recv()
1358
2234
if data[0] == 'data':
1359
2235
return data[1]
1360
2236
if data[0] == 'function':
2237
1361
2238
def func(*args, **kwargs):
1362
2239
self._pipe.send(('funcall', name, args, kwargs))
1363
2240
return self._pipe.recv()[1]
2241
1364
2242
return func
1365
2243
1366
2244
def __setattr__(self, name, value):
1367
if(name == '_pipe'):
2245
if name == '_pipe':
1368
2246
return super(ProxyClient, self).__setattr__(name, value)
1369
2247
self._pipe.send(('setattr', name, value))
1370
2248
1371
class ClientDBusTransitional(ClientDBus):
1372
__metaclass__ = AlternateDBusNamesMetaclass
1373
2249
1374
2250
class ClientHandler(socketserver.BaseRequestHandler, object):
1375
2251
"""A class to handle client connections.
1376
2252
1377
2253
Instantiated once for each connection to handle it.
1378
2254
Note: This will run in its own forked process."""
1379
2255
1380
2256
def handle(self):
1381
2257
with contextlib.closing(self.server.child_pipe) as child_pipe:
1382
2258
logger.info("TCP connection from: %s",
1383
unicode(self.client_address))
2259
str(self.client_address))
1384
2260
logger.debug("Pipe FD: %d",
1385
2261
self.server.child_pipe.fileno())
1386
1387
session = (gnutls.connection
1388
.ClientSession(self.request,
1389
gnutls.connection
1390
.X509Credentials()))
1391
1392
# Note: gnutls.connection.X509Credentials is really a
1393
# generic GnuTLS certificate credentials object so long as
1394
# no X.509 keys are added to it. Therefore, we can use it
1395
# here despite using OpenPGP certificates.
1396
1397
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1398
# "+AES-256-CBC", "+SHA1",
1399
# "+COMP-NULL", "+CTYPE-OPENPGP",
1400
# "+DHE-DSS"))
2262
2263
session = gnutls.ClientSession(self.request)
2264
2265
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2266
# "+AES-256-CBC", "+SHA1",
2267
# "+COMP-NULL", "+CTYPE-OPENPGP",
2268
# "+DHE-DSS"))
1401
2269
# Use a fallback default, since this MUST be set.
1402
2270
priority = self.server.gnutls_priority
1403
2271
if priority is None:
1404
2272
priority = "NORMAL"
1405
(gnutls.library.functions
1406
.gnutls_priority_set_direct(session._c_object,
1407
priority, None))
1408
2273
gnutls.priority_set_direct(session._c_object,
2274
priority.encode("utf-8"),
2275
None)
2276
1409
2277
# Start communication using the Mandos protocol
1410
2278
# Get protocol number
1411
2279
line = self.request.makefile().readline()
1412
2280
logger.debug("Protocol version: %r", line)
1413
2281
try:
1414
2282
if int(line.strip().split()[0]) > 1:
1415
raise RuntimeError
2283
raise RuntimeError(line)
1416
2284
except (ValueError, IndexError, RuntimeError) as error:
1417
2285
logger.error("Unknown protocol version: %s", error)
1418
2286
return
1419
2287
1420
2288
# Start GnuTLS connection
1421
2289
try:
1422
2290
session.handshake()
1423
except gnutls.errors.GNUTLSError as error:
2291
except gnutls.Error as error:
1424
2292
logger.warning("Handshake failed: %s", error)
1425
2293
# Do not run session.bye() here: the session is not
1426
2294
# established. Just abandon the request.
1427
2295
return
1428
2296
logger.debug("Handshake succeeded")
1429
2297
1430
2298
approval_required = False
1431
2299
try:
1432
try:
1433
fpr = self.fingerprint(self.peer_certificate
1434
(session))
1435
except (TypeError,
1436
gnutls.errors.GNUTLSError) as error:
1437
logger.warning("Bad certificate: %s", error)
1438
return
1439
logger.debug("Fingerprint: %s", fpr)
1440
if self.server.use_dbus:
1441
# Emit D-Bus signal
1442
client.NewRequest(str(self.client_address))
1443
1444
try:
1445
client = ProxyClient(child_pipe, fpr,
2300
if gnutls.has_rawpk:
2301
fpr = ""
2302
try:
2303
key_id = self.key_id(
2304
self.peer_certificate(session))
2305
except (TypeError, gnutls.Error) as error:
2306
logger.warning("Bad certificate: %s", error)
2307
return
2308
logger.debug("Key ID: %s", key_id)
2309
2310
else:
2311
key_id = ""
2312
try:
2313
fpr = self.fingerprint(
2314
self.peer_certificate(session))
2315
except (TypeError, gnutls.Error) as error:
2316
logger.warning("Bad certificate: %s", error)
2317
return
2318
logger.debug("Fingerprint: %s", fpr)
2319
2320
try:
2321
client = ProxyClient(child_pipe, key_id, fpr,
1446
2322
self.client_address)
1447
2323
except KeyError:
1448
2324
return
1449
2325
1450
2326
if client.approval_delay:
1451
2327
delay = client.approval_delay
1452
2328
client.approvals_pending += 1
1453
2329
approval_required = True
1454
2330
1455
2331
while True:
1456
2332
if not client.enabled:
1457
2333
logger.info("Client %s is disabled",
1458
client.name)
2334
client.name)
1459
2335
if self.server.use_dbus:
1460
2336
# Emit D-Bus signal
1461
2337
client.Rejected("Disabled")
1462
2338
return
1463
1464
if client._approved or not client.approval_delay:
1465
#We are approved or approval is disabled
2339
2340
if client.approved or not client.approval_delay:
2341
# We are approved or approval is disabled
1466
2342
break
1467
elif client._approved is None:
2343
elif client.approved is None:
1468
2344
logger.info("Client %s needs approval",
1469
2345
client.name)
1470
2346
if self.server.use_dbus:
1471
2347
# Emit D-Bus signal
1472
2348
client.NeedApproval(
1473
client.approval_delay_milliseconds(),
1474
client.approved_by_default)
2349
client.approval_delay.total_seconds()
2350
* 1000, client.approved_by_default)
1475
2351
else:
1476
2352
logger.warning("Client %s was not approved",
1477
2353
client.name)
1479
2355
# Emit D-Bus signal
1480
2356
client.Rejected("Denied")
1481
2357
return
1482
1483
#wait until timeout or approved
2358
2359
# wait until timeout or approved
1484
2360
time = datetime.datetime.now()
1485
2361
client.changedstate.acquire()
1486
(client.changedstate.wait
1487
(float(client._timedelta_to_milliseconds(delay)
1488
/ 1000)))
2362
client.changedstate.wait(delay.total_seconds())
1489
2363
client.changedstate.release()
1490
2364
time2 = datetime.datetime.now()
1491
2365
if (time2 - time) >= delay:
1501
2375
break
1502
2376
else:
1503
2377
delay -= time2 - time
1504
1505
sent_size = 0
1506
while sent_size < len(client.secret):
1507
try:
1508
sent = session.send(client.secret[sent_size:])
1509
except gnutls.errors.GNUTLSError as error:
1510
logger.warning("gnutls send failed")
1511
return
1512
logger.debug("Sent: %d, remaining: %d",
1513
sent, len(client.secret)
1514
- (sent_size + sent))
1515
sent_size += sent
1516
2378
2379
try:
2380
session.send(client.secret)
2381
except gnutls.Error as error:
2382
logger.warning("gnutls send failed",
2383
exc_info=error)
2384
return
2385
1517
2386
logger.info("Sending secret to %s", client.name)
1518
2387
# bump the timeout using extended_timeout
1519
client.checked_ok(client.extended_timeout)
2388
client.bump_timeout(client.extended_timeout)
1520
2389
if self.server.use_dbus:
1521
2390
# Emit D-Bus signal
1522
2391
client.GotSecret()
1523
2392
1524
2393
finally:
1525
2394
if approval_required:
1526
2395
client.approvals_pending -= 1
1527
2396
try:
1528
2397
session.bye()
1529
except gnutls.errors.GNUTLSError as error:
1530
logger.warning("GnuTLS bye failed")
1531
2398
except gnutls.Error as error:
2399
logger.warning("GnuTLS bye failed",
2400
exc_info=error)
2401
1532
2402
@staticmethod
1533
2403
def peer_certificate(session):
1534
"Return the peer's OpenPGP certificate as a bytestring"
1535
# If not an OpenPGP certificate...
1536
if (gnutls.library.functions
1537
.gnutls_certificate_type_get(session._c_object)
1538
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1539
# ...do the normal thing
1540
return session.peer_certificate
2404
"Return the peer's certificate as a bytestring"
2405
try:
2406
cert_type = gnutls.certificate_type_get2(session._c_object,
2407
gnutls.CTYPE_PEERS)
2408
except AttributeError:
2409
cert_type = gnutls.certificate_type_get(session._c_object)
2410
if gnutls.has_rawpk:
2411
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2412
else:
2413
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2414
# If not a valid certificate type...
2415
if cert_type not in valid_cert_types:
2416
logger.info("Cert type %r not in %r", cert_type,
2417
valid_cert_types)
2418
# ...return invalid data
2419
return b""
1541
2420
list_size = ctypes.c_uint(1)
1542
cert_list = (gnutls.library.functions
1543
.gnutls_certificate_get_peers
2421
cert_list = (gnutls.certificate_get_peers
1544
2422
(session._c_object, ctypes.byref(list_size)))
1545
2423
if not bool(cert_list) and list_size.value != 0:
1546
raise gnutls.errors.GNUTLSError("error getting peer"
1547
" certificate")
2424
raise gnutls.Error("error getting peer certificate")
1548
2425
if list_size.value == 0:
1549
2426
return None
1550
2427
cert = cert_list[0]
1551
2428
return ctypes.string_at(cert.data, cert.size)
1552
2429
2430
@staticmethod
2431
def key_id(certificate):
2432
"Convert a certificate bytestring to a hexdigit key ID"
2433
# New GnuTLS "datum" with the public key
2434
datum = gnutls.datum_t(
2435
ctypes.cast(ctypes.c_char_p(certificate),
2436
ctypes.POINTER(ctypes.c_ubyte)),
2437
ctypes.c_uint(len(certificate)))
2438
# XXX all these need to be created in the gnutls "module"
2439
# New empty GnuTLS certificate
2440
pubkey = gnutls.pubkey_t()
2441
gnutls.pubkey_init(ctypes.byref(pubkey))
2442
# Import the raw public key into the certificate
2443
gnutls.pubkey_import(pubkey,
2444
ctypes.byref(datum),
2445
gnutls.X509_FMT_DER)
2446
# New buffer for the key ID
2447
buf = ctypes.create_string_buffer(32)
2448
buf_len = ctypes.c_size_t(len(buf))
2449
# Get the key ID from the raw public key into the buffer
2450
gnutls.pubkey_get_key_id(pubkey,
2451
gnutls.KEYID_USE_SHA256,
2452
ctypes.cast(ctypes.byref(buf),
2453
ctypes.POINTER(ctypes.c_ubyte)),
2454
ctypes.byref(buf_len))
2455
# Deinit the certificate
2456
gnutls.pubkey_deinit(pubkey)
2457
2458
# Convert the buffer to a Python bytestring
2459
key_id = ctypes.string_at(buf, buf_len.value)
2460
# Convert the bytestring to hexadecimal notation
2461
hex_key_id = binascii.hexlify(key_id).upper()
2462
return hex_key_id
2463
1553
2464
@staticmethod
1554
2465
def fingerprint(openpgp):
1555
2466
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1556
2467
# New GnuTLS "datum" with the OpenPGP public key
1557
datum = (gnutls.library.types
1558
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1559
ctypes.POINTER
1560
(ctypes.c_ubyte)),
1561
ctypes.c_uint(len(openpgp))))
2468
datum = gnutls.datum_t(
2469
ctypes.cast(ctypes.c_char_p(openpgp),
2470
ctypes.POINTER(ctypes.c_ubyte)),
2471
ctypes.c_uint(len(openpgp)))
1562
2472
# New empty GnuTLS certificate
1563
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1564
(gnutls.library.functions
1565
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2473
crt = gnutls.openpgp_crt_t()
2474
gnutls.openpgp_crt_init(ctypes.byref(crt))
1566
2475
# Import the OpenPGP public key into the certificate
1567
(gnutls.library.functions
1568
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1569
gnutls.library.constants
1570
.GNUTLS_OPENPGP_FMT_RAW))
2476
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2477
gnutls.OPENPGP_FMT_RAW)
1571
2478
# Verify the self signature in the key
1572
2479
crtverify = ctypes.c_uint()
1573
(gnutls.library.functions
1574
.gnutls_openpgp_crt_verify_self(crt, 0,
1575
ctypes.byref(crtverify)))
2480
gnutls.openpgp_crt_verify_self(crt, 0,
2481
ctypes.byref(crtverify))
1576
2482
if crtverify.value != 0:
1577
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1578
raise (gnutls.errors.CertificateSecurityError
1579
("Verify failed"))
2483
gnutls.openpgp_crt_deinit(crt)
2484
raise gnutls.CertificateSecurityError(code
2485
=crtverify.value)
1580
2486
# New buffer for the fingerprint
1581
2487
buf = ctypes.create_string_buffer(20)
1582
2488
buf_len = ctypes.c_size_t()
1583
2489
# Get the fingerprint from the certificate into the buffer
1584
(gnutls.library.functions
1585
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1586
ctypes.byref(buf_len)))
2490
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2491
ctypes.byref(buf_len))
1587
2492
# Deinit the certificate
1588
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2493
gnutls.openpgp_crt_deinit(crt)
1589
2494
# Convert the buffer to a Python bytestring
1590
2495
fpr = ctypes.string_at(buf, buf_len.value)
1591
2496
# Convert the bytestring to hexadecimal notation
1592
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
2497
hex_fpr = binascii.hexlify(fpr).upper()
1593
2498
return hex_fpr
1594
2499
1595
2500
1596
2501
class MultiprocessingMixIn(object):
1597
2502
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2503
1598
2504
def sub_process_main(self, request, address):
1599
2505
try:
1600
2506
self.finish_request(request, address)
1601
except:
2507
except Exception:
1602
2508
self.handle_error(request, address)
1603
2509
self.close_request(request)
1604
2510
1605
2511
def process_request(self, request, address):
1606
2512
"""Start a new process to process the request."""
1607
proc = multiprocessing.Process(target = self.sub_process_main,
1608
args = (request,
1609
address))
2513
proc = multiprocessing.Process(target=self.sub_process_main,
2514
args=(request, address))
1610
2515
proc.start()
1611
2516
return proc
1612
2517
1613
2518
1614
2519
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1615
2520
""" adds a pipe to the MixIn """
2521
1616
2522
def process_request(self, request, client_address):
1617
2523
"""Overrides and wraps the original process_request().
1618
2524
1619
2525
This function creates a new pipe in self.pipe
1620
2526
"""
1621
2527
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1622
2528
1623
2529
proc = MultiprocessingMixIn.process_request(self, request,
1624
2530
client_address)
1625
2531
self.child_pipe.close()
1626
2532
self.add_pipe(parent_pipe, proc)
1627
2533
1628
2534
def add_pipe(self, parent_pipe, proc):
1629
2535
"""Dummy function; override as necessary"""
1630
raise NotImplementedError
2536
raise NotImplementedError()
1631
2537
1632
2538
1633
2539
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1634
2540
socketserver.TCPServer, object):
1635
2541
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1636
2542
1637
2543
Attributes:
1638
2544
enabled: Boolean; whether this server is activated yet
1639
2545
interface: None or a network interface name (string)
1640
2546
use_ipv6: Boolean; to use IPv6 or not
1641
2547
"""
2548
1642
2549
def __init__(self, server_address, RequestHandlerClass,
1643
interface=None, use_ipv6=True):
2550
interface=None,
2551
use_ipv6=True,
2552
socketfd=None):
2553
"""If socketfd is set, use that file descriptor instead of
2554
creating a new one with socket.socket().
2555
"""
1644
2556
self.interface = interface
1645
2557
if use_ipv6:
1646
2558
self.address_family = socket.AF_INET6
2559
if socketfd is not None:
2560
# Save the file descriptor
2561
self.socketfd = socketfd
2562
# Save the original socket.socket() function
2563
self.socket_socket = socket.socket
2564
2565
# To implement --socket, we monkey patch socket.socket.
2566
#
2567
# (When socketserver.TCPServer is a new-style class, we
2568
# could make self.socket into a property instead of monkey
2569
# patching socket.socket.)
2570
#
2571
# Create a one-time-only replacement for socket.socket()
2572
@functools.wraps(socket.socket)
2573
def socket_wrapper(*args, **kwargs):
2574
# Restore original function so subsequent calls are
2575
# not affected.
2576
socket.socket = self.socket_socket
2577
del self.socket_socket
2578
# This time only, return a new socket object from the
2579
# saved file descriptor.
2580
return socket.fromfd(self.socketfd, *args, **kwargs)
2581
# Replace socket.socket() function with wrapper
2582
socket.socket = socket_wrapper
2583
# The socketserver.TCPServer.__init__ will call
2584
# socket.socket(), which might be our replacement,
2585
# socket_wrapper(), if socketfd was set.
1647
2586
socketserver.TCPServer.__init__(self, server_address,
1648
2587
RequestHandlerClass)
2588
1649
2589
def server_bind(self):
1650
2590
"""This overrides the normal server_bind() function
1651
2591
to bind to an interface if one was specified, and also NOT to
1652
2592
bind to an address or port if they were not specified."""
2593
global SO_BINDTODEVICE
1653
2594
if self.interface is not None:
1654
2595
if SO_BINDTODEVICE is None:
1655
logger.error("SO_BINDTODEVICE does not exist;"
1656
" cannot bind to interface %s",
1657
self.interface)
1658
else:
1659
try:
1660
self.socket.setsockopt(socket.SOL_SOCKET,
1661
SO_BINDTODEVICE,
1662
str(self.interface
1663
+ '\0'))
1664
except socket.error as error:
1665
if error[0] == errno.EPERM:
1666
logger.error("No permission to"
1667
" bind to interface %s",
1668
self.interface)
1669
elif error[0] == errno.ENOPROTOOPT:
1670
logger.error("SO_BINDTODEVICE not available;"
1671
" cannot bind to interface %s",
1672
self.interface)
1673
else:
1674
raise
2596
# Fall back to a hard-coded value which seems to be
2597
# common enough.
2598
logger.warning("SO_BINDTODEVICE not found, trying 25")
2599
SO_BINDTODEVICE = 25
2600
try:
2601
self.socket.setsockopt(
2602
socket.SOL_SOCKET, SO_BINDTODEVICE,
2603
(self.interface + "\0").encode("utf-8"))
2604
except socket.error as error:
2605
if error.errno == errno.EPERM:
2606
logger.error("No permission to bind to"
2607
" interface %s", self.interface)
2608
elif error.errno == errno.ENOPROTOOPT:
2609
logger.error("SO_BINDTODEVICE not available;"
2610
" cannot bind to interface %s",
2611
self.interface)
2612
elif error.errno == errno.ENODEV:
2613
logger.error("Interface %s does not exist,"
2614
" cannot bind", self.interface)
2615
else:
2616
raise
1675
2617
# Only bind(2) the socket if we really need to.
1676
2618
if self.server_address[0] or self.server_address[1]:
1677
2619
if not self.server_address[0]:
1678
2620
if self.address_family == socket.AF_INET6:
1679
any_address = "::" # in6addr_any
2621
any_address = "::" # in6addr_any
1680
2622
else:
1681
any_address = socket.INADDR_ANY
2623
any_address = "0.0.0.0" # INADDR_ANY
1682
2624
self.server_address = (any_address,
1683
2625
self.server_address[1])
1684
2626
elif not self.server_address[1]:
1685
self.server_address = (self.server_address[0],
1686
0)
2627
self.server_address = (self.server_address[0], 0)
1687
2628
# if self.interface:
1688
2629
# self.server_address = (self.server_address[0],
1689
2630
# 0, # port
1695
2636
1696
2637
class MandosServer(IPv6_TCPServer):
1697
2638
"""Mandos server.
1698
2639
1699
2640
Attributes:
1700
2641
clients: set of Client objects
1701
2642
gnutls_priority GnuTLS priority string
1702
2643
use_dbus: Boolean; to emit D-Bus signals or not
1703
1704
Assumes a gobject.MainLoop event loop.
2644
2645
Assumes a GLib.MainLoop event loop.
1705
2646
"""
2647
1706
2648
def __init__(self, server_address, RequestHandlerClass,
1707
interface=None, use_ipv6=True, clients=None,
1708
gnutls_priority=None, use_dbus=True):
2649
interface=None,
2650
use_ipv6=True,
2651
clients=None,
2652
gnutls_priority=None,
2653
use_dbus=True,
2654
socketfd=None):
1709
2655
self.enabled = False
1710
2656
self.clients = clients
1711
2657
if self.clients is None:
1714
2660
self.gnutls_priority = gnutls_priority
1715
2661
IPv6_TCPServer.__init__(self, server_address,
1716
2662
RequestHandlerClass,
1717
interface = interface,
1718
use_ipv6 = use_ipv6)
2663
interface=interface,
2664
use_ipv6=use_ipv6,
2665
socketfd=socketfd)
2666
1719
2667
def server_activate(self):
1720
2668
if self.enabled:
1721
2669
return socketserver.TCPServer.server_activate(self)
1722
2670
1723
2671
def enable(self):
1724
2672
self.enabled = True
1725
2673
1726
2674
def add_pipe(self, parent_pipe, proc):
1727
2675
# Call "handle_ipc" for both data and EOF events
1728
gobject.io_add_watch(parent_pipe.fileno(),
1729
gobject.IO_IN | gobject.IO_HUP,
1730
functools.partial(self.handle_ipc,
1731
parent_pipe =
1732
parent_pipe,
1733
proc = proc))
1734
1735
def handle_ipc(self, source, condition, parent_pipe=None,
1736
proc = None, client_object=None):
1737
condition_names = {
1738
gobject.IO_IN: "IN", # There is data to read.
1739
gobject.IO_OUT: "OUT", # Data can be written (without
1740
# blocking).
1741
gobject.IO_PRI: "PRI", # There is urgent data to read.
1742
gobject.IO_ERR: "ERR", # Error condition.
1743
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1744
# broken, usually for pipes and
1745
# sockets).
1746
}
1747
conditions_string = ' | '.join(name
1748
for cond, name in
1749
condition_names.iteritems()
1750
if cond & condition)
2676
GLib.io_add_watch(
2677
parent_pipe.fileno(),
2678
GLib.IO_IN | GLib.IO_HUP,
2679
functools.partial(self.handle_ipc,
2680
parent_pipe=parent_pipe,
2681
proc=proc))
2682
2683
def handle_ipc(self, source, condition,
2684
parent_pipe=None,
2685
proc=None,
2686
client_object=None):
1751
2687
# error, or the other end of multiprocessing.Pipe has closed
1752
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2688
if condition & (GLib.IO_ERR | GLib.IO_HUP):
1753
2689
# Wait for other process to exit
1754
2690
proc.join()
1755
2691
return False
1756
2692
1757
2693
# Read a request from the child
1758
2694
request = parent_pipe.recv()
1759
2695
command = request[0]
1760
2696
1761
2697
if command == 'init':
1762
fpr = request[1]
1763
address = request[2]
1764
1765
for c in self.clients.itervalues():
1766
if c.fingerprint == fpr:
2698
key_id = request[1].decode("ascii")
2699
fpr = request[2].decode("ascii")
2700
address = request[3]
2701
2702
for c in self.clients.values():
2703
if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2704
continue
2705
if key_id and c.key_id == key_id:
2706
client = c
2707
break
2708
if fpr and c.fingerprint == fpr:
1767
2709
client = c
1768
2710
break
1769
2711
else:
1770
logger.info("Client not found for fingerprint: %s, ad"
1771
"dress: %s", fpr, address)
2712
logger.info("Client not found for key ID: %s, address"
2713
": %s", key_id or fpr, address)
1772
2714
if self.use_dbus:
1773
2715
# Emit D-Bus signal
1774
mandos_dbus_service.ClientNotFound(fpr,
2716
mandos_dbus_service.ClientNotFound(key_id or fpr,
1775
2717
address[0])
1776
2718
parent_pipe.send(False)
1777
2719
return False
1778
1779
gobject.io_add_watch(parent_pipe.fileno(),
1780
gobject.IO_IN | gobject.IO_HUP,
1781
functools.partial(self.handle_ipc,
1782
parent_pipe =
1783
parent_pipe,
1784
proc = proc,
1785
client_object =
1786
client))
2720
2721
GLib.io_add_watch(
2722
parent_pipe.fileno(),
2723
GLib.IO_IN | GLib.IO_HUP,
2724
functools.partial(self.handle_ipc,
2725
parent_pipe=parent_pipe,
2726
proc=proc,
2727
client_object=client))
1787
2728
parent_pipe.send(True)
1788
2729
# remove the old hook in favor of the new above hook on
1789
2730
# same fileno
1792
2733
funcname = request[1]
1793
2734
args = request[2]
1794
2735
kwargs = request[3]
1795
2736
1796
2737
parent_pipe.send(('data', getattr(client_object,
1797
2738
funcname)(*args,
1798
**kwargs)))
1799
2739
**kwargs)))
2740
1800
2741
if command == 'getattr':
1801
2742
attrname = request[1]
1802
if callable(client_object.__getattribute__(attrname)):
1803
parent_pipe.send(('function',))
2743
if isinstance(client_object.__getattribute__(attrname),
2744
collections.Callable):
2745
parent_pipe.send(('function', ))
1804
2746
else:
1805
parent_pipe.send(('data', client_object
1806
.__getattribute__(attrname)))
1807
2747
parent_pipe.send((
2748
'data', client_object.__getattribute__(attrname)))
2749
1808
2750
if command == 'setattr':
1809
2751
attrname = request[1]
1810
2752
value = request[2]
1811
2753
setattr(client_object, attrname, value)
1812
2754
1813
2755
return True
1814
2756
1815
2757
2758
def rfc3339_duration_to_delta(duration):
2759
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2760
2761
>>> rfc3339_duration_to_delta("P7D")
2762
datetime.timedelta(7)
2763
>>> rfc3339_duration_to_delta("PT60S")
2764
datetime.timedelta(0, 60)
2765
>>> rfc3339_duration_to_delta("PT60M")
2766
datetime.timedelta(0, 3600)
2767
>>> rfc3339_duration_to_delta("PT24H")
2768
datetime.timedelta(1)
2769
>>> rfc3339_duration_to_delta("P1W")
2770
datetime.timedelta(7)
2771
>>> rfc3339_duration_to_delta("PT5M30S")
2772
datetime.timedelta(0, 330)
2773
>>> rfc3339_duration_to_delta("P1DT3M20S")
2774
datetime.timedelta(1, 200)
2775
"""
2776
2777
# Parsing an RFC 3339 duration with regular expressions is not
2778
# possible - there would have to be multiple places for the same
2779
# values, like seconds. The current code, while more esoteric, is
2780
# cleaner without depending on a parsing library. If Python had a
2781
# built-in library for parsing we would use it, but we'd like to
2782
# avoid excessive use of external libraries.
2783
2784
# New type for defining tokens, syntax, and semantics all-in-one
2785
Token = collections.namedtuple("Token", (
2786
"regexp", # To match token; if "value" is not None, must have
2787
# a "group" containing digits
2788
"value", # datetime.timedelta or None
2789
"followers")) # Tokens valid after this token
2790
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2791
# the "duration" ABNF definition in RFC 3339, Appendix A.
2792
token_end = Token(re.compile(r"$"), None, frozenset())
2793
token_second = Token(re.compile(r"(\d+)S"),
2794
datetime.timedelta(seconds=1),
2795
frozenset((token_end, )))
2796
token_minute = Token(re.compile(r"(\d+)M"),
2797
datetime.timedelta(minutes=1),
2798
frozenset((token_second, token_end)))
2799
token_hour = Token(re.compile(r"(\d+)H"),
2800
datetime.timedelta(hours=1),
2801
frozenset((token_minute, token_end)))
2802
token_time = Token(re.compile(r"T"),
2803
None,
2804
frozenset((token_hour, token_minute,
2805
token_second)))
2806
token_day = Token(re.compile(r"(\d+)D"),
2807
datetime.timedelta(days=1),
2808
frozenset((token_time, token_end)))
2809
token_month = Token(re.compile(r"(\d+)M"),
2810
datetime.timedelta(weeks=4),
2811
frozenset((token_day, token_end)))
2812
token_year = Token(re.compile(r"(\d+)Y"),
2813
datetime.timedelta(weeks=52),
2814
frozenset((token_month, token_end)))
2815
token_week = Token(re.compile(r"(\d+)W"),
2816
datetime.timedelta(weeks=1),
2817
frozenset((token_end, )))
2818
token_duration = Token(re.compile(r"P"), None,
2819
frozenset((token_year, token_month,
2820
token_day, token_time,
2821
token_week)))
2822
# Define starting values:
2823
# Value so far
2824
value = datetime.timedelta()
2825
found_token = None
2826
# Following valid tokens
2827
followers = frozenset((token_duration, ))
2828
# String left to parse
2829
s = duration
2830
# Loop until end token is found
2831
while found_token is not token_end:
2832
# Search for any currently valid tokens
2833
for token in followers:
2834
match = token.regexp.match(s)
2835
if match is not None:
2836
# Token found
2837
if token.value is not None:
2838
# Value found, parse digits
2839
factor = int(match.group(1), 10)
2840
# Add to value so far
2841
value += factor * token.value
2842
# Strip token from string
2843
s = token.regexp.sub("", s, 1)
2844
# Go to found token
2845
found_token = token
2846
# Set valid next tokens
2847
followers = found_token.followers
2848
break
2849
else:
2850
# No currently valid tokens were found
2851
raise ValueError("Invalid RFC 3339 duration: {!r}"
2852
.format(duration))
2853
# End token found
2854
return value
2855
2856
1816
2857
def string_to_delta(interval):
1817
2858
"""Parse a string and return a datetime.timedelta
1818
2859
1819
2860
>>> string_to_delta('7d')
1820
2861
datetime.timedelta(7)
1821
2862
>>> string_to_delta('60s')
1829
2870
>>> string_to_delta('5m 30s')
1830
2871
datetime.timedelta(0, 330)
1831
2872
"""
2873
2874
try:
2875
return rfc3339_duration_to_delta(interval)
2876
except ValueError:
2877
pass
2878
1832
2879
timevalue = datetime.timedelta(0)
1833
2880
for s in interval.split():
1834
2881
try:
1835
suffix = unicode(s[-1])
2882
suffix = s[-1]
1836
2883
value = int(s[:-1])
1837
2884
if suffix == "d":
1838
2885
delta = datetime.timedelta(value)
1845
2892
elif suffix == "w":
1846
2893
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1847
2894
else:
1848
raise ValueError("Unknown suffix %r" % suffix)
1849
except (ValueError, IndexError) as e:
2895
raise ValueError("Unknown suffix {!r}".format(suffix))
2896
except IndexError as e:
1850
2897
raise ValueError(*(e.args))
1851
2898
timevalue += delta
1852
2899
return timevalue
1853
2900
1854
2901
1855
def if_nametoindex(interface):
1856
"""Call the C function if_nametoindex(), or equivalent
1857
1858
Note: This function cannot accept a unicode string."""
1859
global if_nametoindex
1860
try:
1861
if_nametoindex = (ctypes.cdll.LoadLibrary
1862
(ctypes.util.find_library("c"))
1863
.if_nametoindex)
1864
except (OSError, AttributeError):
1865
logger.warning("Doing if_nametoindex the hard way")
1866
def if_nametoindex(interface):
1867
"Get an interface index the hard way, i.e. using fcntl()"
1868
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1869
with contextlib.closing(socket.socket()) as s:
1870
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1871
struct.pack(str("16s16x"),
1872
interface))
1873
interface_index = struct.unpack(str("I"),
1874
ifreq[16:20])[0]
1875
return interface_index
1876
return if_nametoindex(interface)
1877
1878
1879
def daemon(nochdir = False, noclose = False):
2902
def daemon(nochdir=False, noclose=False):
1880
2903
"""See daemon(3). Standard BSD Unix function.
1881
2904
1882
2905
This should really exist as os.daemon, but it doesn't (yet)."""
1883
2906
if os.fork():
1884
2907
sys.exit()
1889
2912
sys.exit()
1890
2913
if not noclose:
1891
2914
# Close all standard open file descriptors
1892
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2915
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1893
2916
if not stat.S_ISCHR(os.fstat(null).st_mode):
1894
2917
raise OSError(errno.ENODEV,
1895
"%s not a character device"
1896
% os.path.devnull)
2918
"{} not a character device"
2919
.format(os.devnull))
1897
2920
os.dup2(null, sys.stdin.fileno())
1898
2921
os.dup2(null, sys.stdout.fileno())
1899
2922
os.dup2(null, sys.stderr.fileno())
1902
2925
1903
2926
1904
2927
def main():
1905
2928
1906
2929
##################################################################
1907
2930
# Parsing of options, both command line and config file
1908
2931
1909
2932
parser = argparse.ArgumentParser()
1910
2933
parser.add_argument("-v", "--version", action="version",
1911
version = "%%(prog)s %s" % version,
2934
version="%(prog)s {}".format(version),
1912
2935
help="show version number and exit")
1913
2936
parser.add_argument("-i", "--interface", metavar="IF",
1914
2937
help="Bind to interface IF")
1920
2943
help="Run self-test")
1921
2944
parser.add_argument("--debug", action="store_true",
1922
2945
help="Debug mode; run in foreground and log"
1923
" to terminal")
2946
" to terminal", default=None)
1924
2947
parser.add_argument("--debuglevel", metavar="LEVEL",
1925
2948
help="Debug level for stdout output")
1926
2949
parser.add_argument("--priority", help="GnuTLS"
1933
2956
" files")
1934
2957
parser.add_argument("--no-dbus", action="store_false",
1935
2958
dest="use_dbus", help="Do not provide D-Bus"
1936
" system bus interface")
2959
" system bus interface", default=None)
1937
2960
parser.add_argument("--no-ipv6", action="store_false",
1938
dest="use_ipv6", help="Do not use IPv6")
2961
dest="use_ipv6", help="Do not use IPv6",
2962
default=None)
1939
2963
parser.add_argument("--no-restore", action="store_false",
1940
dest="restore", help="Do not restore stored state",
1941
default=True)
2964
dest="restore", help="Do not restore stored"
2965
" state", default=None)
2966
parser.add_argument("--socket", type=int,
2967
help="Specify a file descriptor to a network"
2968
" socket to use instead of creating one")
2969
parser.add_argument("--statedir", metavar="DIR",
2970
help="Directory to save/restore state in")
2971
parser.add_argument("--foreground", action="store_true",
2972
help="Run in foreground", default=None)
2973
parser.add_argument("--no-zeroconf", action="store_false",
2974
dest="zeroconf", help="Do not use Zeroconf",
2975
default=None)
1942
2976
1943
2977
options = parser.parse_args()
1944
2978
1945
2979
if options.check:
1946
2980
import doctest
1947
doctest.testmod()
1948
sys.exit()
1949
2981
fail_count, test_count = doctest.testmod()
2982
sys.exit(os.EX_OK if fail_count == 0 else 1)
2983
1950
2984
# Default values for config file for server-global settings
1951
server_defaults = { "interface": "",
1952
"address": "",
1953
"port": "",
1954
"debug": "False",
1955
"priority":
1956
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1957
"servicename": "Mandos",
1958
"use_dbus": "True",
1959
"use_ipv6": "True",
1960
"debuglevel": "",
1961
}
1962
2985
if gnutls.has_rawpk:
2986
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
2987
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
2988
else:
2989
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2990
":+SIGN-DSA-SHA256")
2991
server_defaults = {"interface": "",
2992
"address": "",
2993
"port": "",
2994
"debug": "False",
2995
"priority": priority,
2996
"servicename": "Mandos",
2997
"use_dbus": "True",
2998
"use_ipv6": "True",
2999
"debuglevel": "",
3000
"restore": "True",
3001
"socket": "",
3002
"statedir": "/var/lib/mandos",
3003
"foreground": "False",
3004
"zeroconf": "True",
3005
}
3006
del priority
3007
1963
3008
# Parse config file for server-global settings
1964
3009
server_config = configparser.SafeConfigParser(server_defaults)
1965
3010
del server_defaults
1966
server_config.read(os.path.join(options.configdir,
1967
"mandos.conf"))
3011
server_config.read(os.path.join(options.configdir, "mandos.conf"))
1968
3012
# Convert the SafeConfigParser object to a dict
1969
3013
server_settings = server_config.defaults()
1970
3014
# Use the appropriate methods on the non-string config options
1971
for option in ("debug", "use_dbus", "use_ipv6"):
3015
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3016
"foreground", "zeroconf"):
1972
3017
server_settings[option] = server_config.getboolean("DEFAULT",
1973
3018
option)
1974
3019
if server_settings["port"]:
1975
3020
server_settings["port"] = server_config.getint("DEFAULT",
1976
3021
"port")
3022
if server_settings["socket"]:
3023
server_settings["socket"] = server_config.getint("DEFAULT",
3024
"socket")
3025
# Later, stdin will, and stdout and stderr might, be dup'ed
3026
# over with an opened os.devnull. But we don't want this to
3027
# happen with a supplied network socket.
3028
if 0 <= server_settings["socket"] <= 2:
3029
server_settings["socket"] = os.dup(server_settings
3030
["socket"])
1977
3031
del server_config
1978
3032
1979
3033
# Override the settings from the config file with command line
1980
3034
# options, if set.
1981
3035
for option in ("interface", "address", "port", "debug",
1982
"priority", "servicename", "configdir",
1983
"use_dbus", "use_ipv6", "debuglevel", "restore"):
3036
"priority", "servicename", "configdir", "use_dbus",
3037
"use_ipv6", "debuglevel", "restore", "statedir",
3038
"socket", "foreground", "zeroconf"):
1984
3039
value = getattr(options, option)
1985
3040
if value is not None:
1986
3041
server_settings[option] = value
1987
3042
del options
1988
3043
# Force all strings to be unicode
1989
3044
for option in server_settings.keys():
1990
if type(server_settings[option]) is str:
1991
server_settings[option] = unicode(server_settings[option])
3045
if isinstance(server_settings[option], bytes):
3046
server_settings[option] = (server_settings[option]
3047
.decode("utf-8"))
3048
# Force all boolean options to be boolean
3049
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3050
"foreground", "zeroconf"):
3051
server_settings[option] = bool(server_settings[option])
3052
# Debug implies foreground
3053
if server_settings["debug"]:
3054
server_settings["foreground"] = True
1992
3055
# Now we have our good server settings in "server_settings"
1993
3056
1994
3057
##################################################################
1995
3058
3059
if (not server_settings["zeroconf"]
3060
and not (server_settings["port"]
3061
or server_settings["socket"] != "")):
3062
parser.error("Needs port or socket to work without Zeroconf")
3063
1996
3064
# For convenience
1997
3065
debug = server_settings["debug"]
1998
3066
debuglevel = server_settings["debuglevel"]
1999
3067
use_dbus = server_settings["use_dbus"]
2000
3068
use_ipv6 = server_settings["use_ipv6"]
2001
3069
stored_state_path = os.path.join(server_settings["statedir"],
3070
stored_state_file)
3071
foreground = server_settings["foreground"]
3072
zeroconf = server_settings["zeroconf"]
3073
2002
3074
if debug:
2003
initlogger(logging.DEBUG)
3075
initlogger(debug, logging.DEBUG)
2004
3076
else:
2005
3077
if not debuglevel:
2006
initlogger()
3078
initlogger(debug)
2007
3079
else:
2008
3080
level = getattr(logging, debuglevel.upper())
2009
initlogger(level)
2010
3081
initlogger(debug, level)
3082
2011
3083
if server_settings["servicename"] != "Mandos":
2012
syslogger.setFormatter(logging.Formatter
2013
('Mandos (%s) [%%(process)d]:'
2014
' %%(levelname)s: %%(message)s'
2015
% server_settings["servicename"]))
2016
3084
syslogger.setFormatter(
3085
logging.Formatter('Mandos ({}) [%(process)d]:'
3086
' %(levelname)s: %(message)s'.format(
3087
server_settings["servicename"])))
3088
2017
3089
# Parse config file with clients
2018
client_defaults = { "timeout": "5m",
2019
"extended_timeout": "15m",
2020
"interval": "2m",
2021
"checker": "fping -q -- %%(host)s",
2022
"host": "",
2023
"approval_delay": "0s",
2024
"approval_duration": "1s",
2025
}
2026
client_config = configparser.SafeConfigParser(client_defaults)
3090
client_config = configparser.SafeConfigParser(Client
3091
.client_defaults)
2027
3092
client_config.read(os.path.join(server_settings["configdir"],
2028
3093
"clients.conf"))
2029
3094
2030
3095
global mandos_dbus_service
2031
3096
mandos_dbus_service = None
2032
2033
tcp_server = MandosServer((server_settings["address"],
2034
server_settings["port"]),
2035
ClientHandler,
2036
interface=(server_settings["interface"]
2037
or None),
2038
use_ipv6=use_ipv6,
2039
gnutls_priority=
2040
server_settings["priority"],
2041
use_dbus=use_dbus)
2042
if not debug:
2043
pidfilename = "/var/run/mandos.pid"
2044
try:
2045
pidfile = open(pidfilename, "w")
2046
except IOError:
2047
logger.error("Could not open file %r", pidfilename)
2048
2049
try:
2050
uid = pwd.getpwnam("_mandos").pw_uid
2051
gid = pwd.getpwnam("_mandos").pw_gid
2052
except KeyError:
2053
try:
2054
uid = pwd.getpwnam("mandos").pw_uid
2055
gid = pwd.getpwnam("mandos").pw_gid
3097
3098
socketfd = None
3099
if server_settings["socket"] != "":
3100
socketfd = server_settings["socket"]
3101
tcp_server = MandosServer(
3102
(server_settings["address"], server_settings["port"]),
3103
ClientHandler,
3104
interface=(server_settings["interface"] or None),
3105
use_ipv6=use_ipv6,
3106
gnutls_priority=server_settings["priority"],
3107
use_dbus=use_dbus,
3108
socketfd=socketfd)
3109
if not foreground:
3110
pidfilename = "/run/mandos.pid"
3111
if not os.path.isdir("/run/."):
3112
pidfilename = "/var/run/mandos.pid"
3113
pidfile = None
3114
try:
3115
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3116
except IOError as e:
3117
logger.error("Could not open file %r", pidfilename,
3118
exc_info=e)
3119
3120
for name, group in (("_mandos", "_mandos"),
3121
("mandos", "mandos"),
3122
("nobody", "nogroup")):
3123
try:
3124
uid = pwd.getpwnam(name).pw_uid
3125
gid = pwd.getpwnam(group).pw_gid
3126
break
2056
3127
except KeyError:
2057
try:
2058
uid = pwd.getpwnam("nobody").pw_uid
2059
gid = pwd.getpwnam("nobody").pw_gid
2060
except KeyError:
2061
uid = 65534
2062
gid = 65534
3128
continue
3129
else:
3130
uid = 65534
3131
gid = 65534
2063
3132
try:
2064
3133
os.setgid(gid)
2065
3134
os.setuid(uid)
3135
if debug:
3136
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3137
gid))
2066
3138
except OSError as error:
2067
if error[0] != errno.EPERM:
2068
raise error
2069
3139
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3140
.format(uid, gid, os.strerror(error.errno)))
3141
if error.errno != errno.EPERM:
3142
raise
3143
2070
3144
if debug:
2071
3145
# Enable all possible GnuTLS debugging
2072
3146
2073
3147
# "Use a log level over 10 to enable all debugging options."
2074
3148
# - GnuTLS manual
2075
gnutls.library.functions.gnutls_global_set_log_level(11)
2076
2077
@gnutls.library.types.gnutls_log_func
3149
gnutls.global_set_log_level(11)
3150
3151
@gnutls.log_func
2078
3152
def debug_gnutls(level, string):
2079
3153
logger.debug("GnuTLS: %s", string[:-1])
2080
2081
(gnutls.library.functions
2082
.gnutls_global_set_log_function(debug_gnutls))
2083
3154
3155
gnutls.global_set_log_function(debug_gnutls)
3156
2084
3157
# Redirect stdin so all checkers get /dev/null
2085
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3158
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2086
3159
os.dup2(null, sys.stdin.fileno())
2087
3160
if null > 2:
2088
3161
os.close(null)
2089
else:
2090
# No console logging
2091
logger.removeHandler(console)
2092
3162
2093
3163
# Need to fork before connecting to D-Bus
2094
if not debug:
3164
if not foreground:
2095
3165
# Close all input and output, do double fork, etc.
2096
3166
daemon()
2097
3167
3168
# multiprocessing will use threads, so before we use GLib we need
3169
# to inform GLib that threads will be used.
3170
GLib.threads_init()
3171
2098
3172
global main_loop
2099
3173
# From the Avahi example code
2100
DBusGMainLoop(set_as_default=True )
2101
main_loop = gobject.MainLoop()
3174
DBusGMainLoop(set_as_default=True)
3175
main_loop = GLib.MainLoop()
2102
3176
bus = dbus.SystemBus()
2103
3177
# End of Avahi example code
2104
3178
if use_dbus:
2105
3179
try:
2106
3180
bus_name = dbus.service.BusName("se.recompile.Mandos",
2107
bus, do_not_queue=True)
2108
old_bus_name = (dbus.service.BusName
2109
("se.bsnet.fukt.Mandos", bus,
2110
do_not_queue=True))
2111
except dbus.exceptions.NameExistsException as e:
2112
logger.error(unicode(e) + ", disabling D-Bus")
3181
bus,
3182
do_not_queue=True)
3183
old_bus_name = dbus.service.BusName(
3184
"se.bsnet.fukt.Mandos", bus,
3185
do_not_queue=True)
3186
except dbus.exceptions.DBusException as e:
3187
logger.error("Disabling D-Bus:", exc_info=e)
2113
3188
use_dbus = False
2114
3189
server_settings["use_dbus"] = False
2115
3190
tcp_server.use_dbus = False
2116
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2117
service = AvahiServiceToSyslog(name =
2118
server_settings["servicename"],
2119
servicetype = "_mandos._tcp",
2120
protocol = protocol, bus = bus)
2121
if server_settings["interface"]:
2122
service.interface = (if_nametoindex
2123
(str(server_settings["interface"])))
2124
3191
if zeroconf:
3192
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3193
service = AvahiServiceToSyslog(
3194
name=server_settings["servicename"],
3195
servicetype="_mandos._tcp",
3196
protocol=protocol,
3197
bus=bus)
3198
if server_settings["interface"]:
3199
service.interface = if_nametoindex(
3200
server_settings["interface"].encode("utf-8"))
3201
2125
3202
global multiprocessing_manager
2126
3203
multiprocessing_manager = multiprocessing.Manager()
2127
3204
2128
3205
client_class = Client
2129
3206
if use_dbus:
2130
client_class = functools.partial(ClientDBusTransitional,
2131
bus = bus)
2132
2133
special_settings = {
2134
# Some settings need to be accessd by special methods;
2135
# booleans need .getboolean(), etc. Here is a list of them:
2136
"approved_by_default":
2137
lambda section:
2138
client_config.getboolean(section, "approved_by_default"),
2139
}
2140
# Construct a new dict of client settings of this form:
2141
# { client_name: {setting_name: value, ...}, ...}
2142
# with exceptions for any special settings as defined above
2143
client_settings = dict((clientname,
2144
dict((setting,
2145
(value if setting not in special_settings
2146
else special_settings[setting](clientname)))
2147
for setting, value in client_config.items(clientname)))
2148
for clientname in client_config.sections())
2149
3207
client_class = functools.partial(ClientDBus, bus=bus)
3208
3209
client_settings = Client.config_parser(client_config)
2150
3210
old_client_settings = {}
2151
clients_data = []
2152
2153
# Get client data and settings from last running state.
3211
clients_data = {}
3212
3213
# This is used to redirect stdout and stderr for checker processes
3214
global wnull
3215
wnull = open(os.devnull, "w") # A writable /dev/null
3216
# Only used if server is running in foreground but not in debug
3217
# mode
3218
if debug or not foreground:
3219
wnull.close()
3220
3221
# Get client data and settings from last running state.
2154
3222
if server_settings["restore"]:
2155
3223
try:
2156
3224
with open(stored_state_path, "rb") as stored_state:
2157
clients_data, old_client_settings = pickle.load(stored_state)
3225
if sys.version_info.major == 2:
3226
clients_data, old_client_settings = pickle.load(
3227
stored_state)
3228
else:
3229
bytes_clients_data, bytes_old_client_settings = (
3230
pickle.load(stored_state, encoding="bytes"))
3231
# Fix bytes to strings
3232
# clients_data
3233
# .keys()
3234
clients_data = {(key.decode("utf-8")
3235
if isinstance(key, bytes)
3236
else key): value
3237
for key, value in
3238
bytes_clients_data.items()}
3239
del bytes_clients_data
3240
for key in clients_data:
3241
value = {(k.decode("utf-8")
3242
if isinstance(k, bytes) else k): v
3243
for k, v in
3244
clients_data[key].items()}
3245
clients_data[key] = value
3246
# .client_structure
3247
value["client_structure"] = [
3248
(s.decode("utf-8")
3249
if isinstance(s, bytes)
3250
else s) for s in
3251
value["client_structure"]]
3252
# .name & .host
3253
for k in ("name", "host"):
3254
if isinstance(value[k], bytes):
3255
value[k] = value[k].decode("utf-8")
3256
if not value.has_key("key_id"):
3257
value["key_id"] = ""
3258
elif not value.has_key("fingerprint"):
3259
value["fingerprint"] = ""
3260
# old_client_settings
3261
# .keys()
3262
old_client_settings = {
3263
(key.decode("utf-8")
3264
if isinstance(key, bytes)
3265
else key): value
3266
for key, value in
3267
bytes_old_client_settings.items()}
3268
del bytes_old_client_settings
3269
# .host
3270
for value in old_client_settings.values():
3271
if isinstance(value["host"], bytes):
3272
value["host"] = (value["host"]
3273
.decode("utf-8"))
2158
3274
os.remove(stored_state_path)
2159
3275
except IOError as e:
2160
logger.warning("Could not load persistant state: {0}".format(e))
2161
if e.errno != errno.ENOENT:
3276
if e.errno == errno.ENOENT:
3277
logger.warning("Could not load persistent state:"
3278
" {}".format(os.strerror(e.errno)))
3279
else:
3280
logger.critical("Could not load persistent state:",
3281
exc_info=e)
2162
3282
raise
2163
2164
for client in clients_data:
2165
client_name = client["name"]
2166
2167
# Decide which value to use after restoring saved state.
2168
# We have three different values: Old config file,
2169
# new config file, and saved state.
2170
# New config value takes precedence if it differs from old
2171
# config value, otherwise use saved state.
2172
for name, value in client_settings[client_name].items():
3283
except EOFError as e:
3284
logger.warning("Could not load persistent state: "
3285
"EOFError:",
3286
exc_info=e)
3287
3288
with PGPEngine() as pgp:
3289
for client_name, client in clients_data.items():
3290
# Skip removed clients
3291
if client_name not in client_settings:
3292
continue
3293
3294
# Decide which value to use after restoring saved state.
3295
# We have three different values: Old config file,
3296
# new config file, and saved state.
3297
# New config value takes precedence if it differs from old
3298
# config value, otherwise use saved state.
3299
for name, value in client_settings[client_name].items():
3300
try:
3301
# For each value in new config, check if it
3302
# differs from the old config value (Except for
3303
# the "secret" attribute)
3304
if (name != "secret"
3305
and (value !=
3306
old_client_settings[client_name][name])):
3307
client[name] = value
3308
except KeyError:
3309
pass
3310
3311
# Clients who has passed its expire date can still be
3312
# enabled if its last checker was successful. A Client
3313
# whose checker succeeded before we stored its state is
3314
# assumed to have successfully run all checkers during
3315
# downtime.
3316
if client["enabled"]:
3317
if datetime.datetime.utcnow() >= client["expires"]:
3318
if not client["last_checked_ok"]:
3319
logger.warning(
3320
"disabling client {} - Client never "
3321
"performed a successful checker".format(
3322
client_name))
3323
client["enabled"] = False
3324
elif client["last_checker_status"] != 0:
3325
logger.warning(
3326
"disabling client {} - Client last"
3327
" checker failed with error code"
3328
" {}".format(
3329
client_name,
3330
client["last_checker_status"]))
3331
client["enabled"] = False
3332
else:
3333
client["expires"] = (
3334
datetime.datetime.utcnow()
3335
+ client["timeout"])
3336
logger.debug("Last checker succeeded,"
3337
" keeping {} enabled".format(
3338
client_name))
2173
3339
try:
2174
# For each value in new config, check if it differs
2175
# from the old config value (Except for the "secret"
2176
# attribute)
2177
if name != "secret" and 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 if its
2183
# last checker was sucessful. Clients who checkers failed before we
2184
# stored it state is asumed to had failed checker during downtime.
2185
if client["enabled"] and client["last_checked_ok"]:
2186
if ((datetime.datetime.utcnow() - client["last_checked_ok"])
2187
> client["interval"]):
2188
if client["last_checker_status"] != 0:
2189
client["enabled"] = False
2190
else:
2191
client["expires"] = datetime.datetime.utcnow() + client["timeout"]
2192
2193
client["changedstate"] = (multiprocessing_manager
2194
.Condition(multiprocessing_manager
2195
.Lock()))
2196
if use_dbus:
2197
new_client = ClientDBusTransitional.__new__(ClientDBusTransitional)
2198
tcp_server.clients[client_name] = new_client
2199
new_client.bus = bus
2200
for name, value in client.iteritems():
2201
setattr(new_client, name, value)
2202
client_object_name = unicode(client_name).translate(
2203
{ord("."): ord("_"),
2204
ord("-"): ord("_")})
2205
new_client.dbus_object_path = (dbus.ObjectPath
2206
("/clients/" + client_object_name))
2207
DBusObjectWithProperties.__init__(new_client,
2208
new_client.bus,
2209
new_client.dbus_object_path)
2210
else:
2211
tcp_server.clients[client_name] = Client.__new__(Client)
2212
for name, value in client.iteritems():
2213
setattr(tcp_server.clients[client_name], name, value)
2214
2215
tcp_server.clients[client_name].decrypt_secret(
2216
client_settings[client_name]["secret"])
2217
2218
# Create/remove clients based on new changes made to config
2219
for clientname in set(old_client_settings) - set(client_settings):
2220
del tcp_server.clients[clientname]
2221
for clientname in set(client_settings) - set(old_client_settings):
2222
tcp_server.clients[clientname] = (client_class(name = clientname,
2223
config =
2224
client_settings
2225
[clientname]))
2226
3340
client["secret"] = pgp.decrypt(
3341
client["encrypted_secret"],
3342
client_settings[client_name]["secret"])
3343
except PGPError:
3344
# If decryption fails, we use secret from new settings
3345
logger.debug("Failed to decrypt {} old secret".format(
3346
client_name))
3347
client["secret"] = (client_settings[client_name]
3348
["secret"])
3349
3350
# Add/remove clients based on new changes made to config
3351
for client_name in (set(old_client_settings)
3352
- set(client_settings)):
3353
del clients_data[client_name]
3354
for client_name in (set(client_settings)
3355
- set(old_client_settings)):
3356
clients_data[client_name] = client_settings[client_name]
3357
3358
# Create all client objects
3359
for client_name, client in clients_data.items():
3360
tcp_server.clients[client_name] = client_class(
3361
name=client_name,
3362
settings=client,
3363
server_settings=server_settings)
2227
3364
2228
3365
if not tcp_server.clients:
2229
3366
logger.warning("No clients defined")
2230
2231
if not debug:
2232
try:
2233
with pidfile:
2234
pid = os.getpid()
2235
pidfile.write(str(pid) + "\n".encode("utf-8"))
2236
del pidfile
2237
except IOError:
2238
logger.error("Could not write to file %r with PID %d",
2239
pidfilename, pid)
2240
except NameError:
2241
# "pidfile" was never created
2242
pass
3367
3368
if not foreground:
3369
if pidfile is not None:
3370
pid = os.getpid()
3371
try:
3372
with pidfile:
3373
print(pid, file=pidfile)
3374
except IOError:
3375
logger.error("Could not write to file %r with PID %d",
3376
pidfilename, pid)
3377
del pidfile
2243
3378
del pidfilename
2244
2245
signal.signal(signal.SIGINT, signal.SIG_IGN)
2246
2247
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2248
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2249
3379
3380
for termsig in (signal.SIGHUP, signal.SIGTERM):
3381
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3382
lambda: main_loop.quit() and False)
3383
2250
3384
if use_dbus:
2251
class MandosDBusService(dbus.service.Object):
3385
3386
@alternate_dbus_interfaces(
3387
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3388
class MandosDBusService(DBusObjectWithObjectManager):
2252
3389
"""A D-Bus proxy object"""
3390
2253
3391
def __init__(self):
2254
3392
dbus.service.Object.__init__(self, bus, "/")
3393
2255
3394
_interface = "se.recompile.Mandos"
2256
3395
2257
3396
@dbus.service.signal(_interface, signature="o")
2258
3397
def ClientAdded(self, objpath):
2259
3398
"D-Bus signal"
2260
3399
pass
2261
3400
2262
3401
@dbus.service.signal(_interface, signature="ss")
2263
def ClientNotFound(self, fingerprint, address):
3402
def ClientNotFound(self, key_id, address):
2264
3403
"D-Bus signal"
2265
3404
pass
2266
3405
3406
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3407
"true"})
2267
3408
@dbus.service.signal(_interface, signature="os")
2268
3409
def ClientRemoved(self, objpath, name):
2269
3410
"D-Bus signal"
2270
3411
pass
2271
3412
3413
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3414
"true"})
2272
3415
@dbus.service.method(_interface, out_signature="ao")
2273
3416
def GetAllClients(self):
2274
3417
"D-Bus method"
2275
return dbus.Array(c.dbus_object_path
2276
for c in
2277
tcp_server.clients.itervalues())
2278
3418
return dbus.Array(c.dbus_object_path for c in
3419
tcp_server.clients.values())
3420
3421
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3422
"true"})
2279
3423
@dbus.service.method(_interface,
2280
3424
out_signature="a{oa{sv}}")
2281
3425
def GetAllClientsWithProperties(self):
2282
3426
"D-Bus method"
2283
3427
return dbus.Dictionary(
2284
((c.dbus_object_path, c.GetAll(""))
2285
for c in tcp_server.clients.itervalues()),
3428
{c.dbus_object_path: c.GetAll(
3429
"se.recompile.Mandos.Client")
3430
for c in tcp_server.clients.values()},
2286
3431
signature="oa{sv}")
2287
3432
2288
3433
@dbus.service.method(_interface, in_signature="o")
2289
3434
def RemoveClient(self, object_path):
2290
3435
"D-Bus method"
2291
for c in tcp_server.clients.itervalues():
3436
for c in tcp_server.clients.values():
2292
3437
if c.dbus_object_path == object_path:
2293
3438
del tcp_server.clients[c.name]
2294
3439
c.remove_from_connection()
2295
# Don't signal anything except ClientRemoved
3440
# Don't signal the disabling
2296
3441
c.disable(quiet=True)
2297
# Emit D-Bus signal
2298
self.ClientRemoved(object_path, c.name)
3442
# Emit D-Bus signal for removal
3443
self.client_removed_signal(c)
2299
3444
return
2300
3445
raise KeyError(object_path)
2301
3446
2302
3447
del _interface
2303
2304
class MandosDBusServiceTransitional(MandosDBusService):
2305
__metaclass__ = AlternateDBusNamesMetaclass
2306
mandos_dbus_service = MandosDBusServiceTransitional()
2307
3448
3449
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3450
out_signature="a{oa{sa{sv}}}")
3451
def GetManagedObjects(self):
3452
"""D-Bus method"""
3453
return dbus.Dictionary(
3454
{client.dbus_object_path:
3455
dbus.Dictionary(
3456
{interface: client.GetAll(interface)
3457
for interface in
3458
client._get_all_interface_names()})
3459
for client in tcp_server.clients.values()})
3460
3461
def client_added_signal(self, client):
3462
"""Send the new standard signal and the old signal"""
3463
if use_dbus:
3464
# New standard signal
3465
self.InterfacesAdded(
3466
client.dbus_object_path,
3467
dbus.Dictionary(
3468
{interface: client.GetAll(interface)
3469
for interface in
3470
client._get_all_interface_names()}))
3471
# Old signal
3472
self.ClientAdded(client.dbus_object_path)
3473
3474
def client_removed_signal(self, client):
3475
"""Send the new standard signal and the old signal"""
3476
if use_dbus:
3477
# New standard signal
3478
self.InterfacesRemoved(
3479
client.dbus_object_path,
3480
client._get_all_interface_names())
3481
# Old signal
3482
self.ClientRemoved(client.dbus_object_path,
3483
client.name)
3484
3485
mandos_dbus_service = MandosDBusService()
3486
3487
# Save modules to variables to exempt the modules from being
3488
# unloaded before the function registered with atexit() is run.
3489
mp = multiprocessing
3490
wn = wnull
3491
2308
3492
def cleanup():
2309
3493
"Cleanup function; run on exit"
2310
service.cleanup()
2311
2312
multiprocessing.active_children()
3494
if zeroconf:
3495
service.cleanup()
3496
3497
mp.active_children()
3498
wn.close()
2313
3499
if not (tcp_server.clients or client_settings):
2314
3500
return
2315
3501
2316
# Store client before exiting. Secrets are encrypted with key based
2317
# on what config file has. If config file is removed/edited, old
2318
# secret will thus be unrecovable.
2319
clients = []
2320
for client in tcp_server.clients.itervalues():
2321
client.encrypt_secret(client_settings[client.name]["secret"])
2322
2323
client_dict = {}
2324
2325
# A list of attributes that will not be stored when shuting down.
2326
exclude = set(("bus", "changedstate", "secret"))
2327
for name, typ in inspect.getmembers(dbus.service.Object):
2328
exclude.add(name)
2329
2330
client_dict["encrypted_secret"] = client.encrypted_secret
2331
for attr in client.client_structure:
2332
if attr not in exclude:
2333
client_dict[attr] = getattr(client, attr)
2334
2335
clients.append(client_dict)
2336
del client_settings[client.name]["secret"]
2337
3502
# Store client before exiting. Secrets are encrypted with key
3503
# based on what config file has. If config file is
3504
# removed/edited, old secret will thus be unrecovable.
3505
clients = {}
3506
with PGPEngine() as pgp:
3507
for client in tcp_server.clients.values():
3508
key = client_settings[client.name]["secret"]
3509
client.encrypted_secret = pgp.encrypt(client.secret,
3510
key)
3511
client_dict = {}
3512
3513
# A list of attributes that can not be pickled
3514
# + secret.
3515
exclude = {"bus", "changedstate", "secret",
3516
"checker", "server_settings"}
3517
for name, typ in inspect.getmembers(dbus.service
3518
.Object):
3519
exclude.add(name)
3520
3521
client_dict["encrypted_secret"] = (client
3522
.encrypted_secret)
3523
for attr in client.client_structure:
3524
if attr not in exclude:
3525
client_dict[attr] = getattr(client, attr)
3526
3527
clients[client.name] = client_dict
3528
del client_settings[client.name]["secret"]
3529
2338
3530
try:
2339
with os.fdopen(os.open(stored_state_path, os.O_CREAT|os.O_WRONLY|os.O_TRUNC, 0600), "wb") as stored_state:
2340
pickle.dump((clients, client_settings), stored_state)
2341
except IOError as e:
2342
logger.warning("Could not save persistant state: {0}".format(e))
2343
if e.errno != errno.ENOENT:
3531
with tempfile.NamedTemporaryFile(
3532
mode='wb',
3533
suffix=".pickle",
3534
prefix='clients-',
3535
dir=os.path.dirname(stored_state_path),
3536
delete=False) as stored_state:
3537
pickle.dump((clients, client_settings), stored_state,
3538
protocol=2)
3539
tempname = stored_state.name
3540
os.rename(tempname, stored_state_path)
3541
except (IOError, OSError) as e:
3542
if not debug:
3543
try:
3544
os.remove(tempname)
3545
except NameError:
3546
pass
3547
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3548
logger.warning("Could not save persistent state: {}"
3549
.format(os.strerror(e.errno)))
3550
else:
3551
logger.warning("Could not save persistent state:",
3552
exc_info=e)
2344
3553
raise
2345
3554
2346
3555
# Delete all clients, and settings from config
2348
3557
name, client = tcp_server.clients.popitem()
2349
3558
if use_dbus:
2350
3559
client.remove_from_connection()
2351
# Don't signal anything except ClientRemoved
3560
# Don't signal the disabling
2352
3561
client.disable(quiet=True)
3562
# Emit D-Bus signal for removal
2353
3563
if use_dbus:
2354
# Emit D-Bus signal
2355
mandos_dbus_service.ClientRemoved(client
2356
.dbus_object_path,
2357
client.name)
3564
mandos_dbus_service.client_removed_signal(client)
2358
3565
client_settings.clear()
2359
3566
2360
3567
atexit.register(cleanup)
2361
2362
for client in tcp_server.clients.itervalues():
3568
3569
for client in tcp_server.clients.values():
2363
3570
if use_dbus:
2364
# Emit D-Bus signal
2365
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3571
# Emit D-Bus signal for adding
3572
mandos_dbus_service.client_added_signal(client)
2366
3573
# Need to initiate checking of clients
2367
3574
if client.enabled:
2368
3575
client.init_checker()
2369
3576
2370
2371
3577
tcp_server.enable()
2372
3578
tcp_server.server_activate()
2373
3579
2374
3580
# Find out what port we got
2375
service.port = tcp_server.socket.getsockname()[1]
3581
if zeroconf:
3582
service.port = tcp_server.socket.getsockname()[1]
2376
3583
if use_ipv6:
2377
3584
logger.info("Now listening on address %r, port %d,"
2378
" flowinfo %d, scope_id %d"
2379
% tcp_server.socket.getsockname())
3585
" flowinfo %d, scope_id %d",
3586
*tcp_server.socket.getsockname())
2380
3587
else: # IPv4
2381
logger.info("Now listening on address %r, port %d"
2382
% tcp_server.socket.getsockname())
2383
2384
#service.interface = tcp_server.socket.getsockname()[3]
2385
3588
logger.info("Now listening on address %r, port %d",
3589
*tcp_server.socket.getsockname())
3590
3591
# service.interface = tcp_server.socket.getsockname()[3]
3592
2386
3593
try:
2387
# From the Avahi example code
2388
try:
2389
service.activate()
2390
except dbus.exceptions.DBusException as error:
2391
logger.critical("DBusException: %s", error)
2392
cleanup()
2393
sys.exit(1)
2394
# End of Avahi example code
2395
2396
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2397
lambda *args, **kwargs:
2398
(tcp_server.handle_request
2399
(*args[2:], **kwargs) or True))
2400
3594
if zeroconf:
3595
# From the Avahi example code
3596
try:
3597
service.activate()
3598
except dbus.exceptions.DBusException as error:
3599
logger.critical("D-Bus Exception", exc_info=error)
3600
cleanup()
3601
sys.exit(1)
3602
# End of Avahi example code
3603
3604
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3605
lambda *args, **kwargs:
3606
(tcp_server.handle_request
3607
(*args[2:], **kwargs) or True))
3608
2401
3609
logger.debug("Starting main loop")
2402
3610
main_loop.run()
2403
3611
except AvahiError as error:
2404
logger.critical("AvahiError: %s", error)
3612
logger.critical("Avahi Error", exc_info=error)
2405
3613
cleanup()
2406
3614
sys.exit(1)
2407
3615
except KeyboardInterrupt:
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0