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- Committer: Björn Påhlsson
- Date: 2011-11-24 19:27:53 UTC
- mto: (518.2.5 persistent-state-gpgme)
- mto: This revision was merged to the branch mainline in revision 524.
- Revision ID: belorn@fukt.bsnet.se-20111124192753-y5jxlc1h3tcxpubc
First run of python-lint. Fixed some *obviously* bad code and turned
them into good code.
them into good code.
- files added:
- initramfs-tools-hook-conf
- files removed:
- bugs.xml
- debian/tests
- debian/upstream
- dracut-module
- network-hooks.d
- plugin-helpers
- files modified:
- .bzrignore
added
removed
mandos
1
1
#!/usr/bin/python
2
# -*- mode: python; after-save-hook: (lambda () (let ((command (if (fboundp 'file-local-name) (file-local-name (buffer-file-name)) (or (file-remote-p (buffer-file-name) 'localname) (buffer-file-name))))) (if (= (progn (if (get-buffer "*Test*") (kill-buffer "*Test*")) (process-file-shell-command (format "%s --check" (shell-quote-argument command)) nil "*Test*")) 0) (let ((w (get-buffer-window "*Test*"))) (if w (delete-window w))) (progn (with-current-buffer "*Test*" (compilation-mode)) (display-buffer "*Test*" '(display-buffer-in-side-window)))))); coding: utf-8 -*-
3
#
2
# -*- mode: python; coding: utf-8 -*-
3
#
4
4
# Mandos server - give out binary blobs to connecting clients.
5
#
5
#
6
6
# This program is partly derived from an example program for an Avahi
7
7
# service publisher, downloaded from
8
8
# <http://avahi.org/wiki/PythonPublishExample>. This includes the
9
9
# methods "add", "remove", "server_state_changed",
10
10
# "entry_group_state_changed", "cleanup", and "activate" in the
11
11
# "AvahiService" class, and some lines in "main".
12
#
12
#
13
13
# Everything else is
14
# Copyright © 2008-2019 Teddy Hogeborn
15
# Copyright © 2008-2019 Björn Påhlsson
16
#
17
# This file is part of Mandos.
18
#
19
# Mandos is free software: you can redistribute it and/or modify it
20
# under the terms of the GNU General Public License as published by
14
# Copyright © 2008-2011 Teddy Hogeborn
15
# Copyright © 2008-2011 Björn Påhlsson
16
#
17
# This program is free software: you can redistribute it and/or modify
18
# it under the terms of the GNU General Public License as published by
21
19
# the Free Software Foundation, either version 3 of the License, or
22
20
# (at your option) any later version.
23
21
#
24
# Mandos is distributed in the hope that it will be useful, but
25
# WITHOUT ANY WARRANTY; without even the implied warranty of
22
# This program is distributed in the hope that it will be useful,
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
26
24
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
27
25
# GNU General Public License for more details.
28
#
26
#
29
27
# You should have received a copy of the GNU General Public License
30
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
31
#
28
# along with this program. If not, see
29
# <http://www.gnu.org/licenses/>.
30
#
32
31
# Contact the authors at <mandos@recompile.se>.
33
#
32
#
34
33
35
34
from __future__ import (division, absolute_import, print_function,
36
35
unicode_literals)
37
36
38
try:
39
from future_builtins import *
40
except ImportError:
41
pass
42
43
try:
44
import SocketServer as socketserver
45
except ImportError:
46
import socketserver
37
import SocketServer as socketserver
47
38
import socket
48
39
import argparse
49
40
import datetime
50
41
import errno
51
try:
52
import ConfigParser as configparser
53
except ImportError:
54
import configparser
42
import gnutls.crypto
43
import gnutls.connection
44
import gnutls.errors
45
import gnutls.library.functions
46
import gnutls.library.constants
47
import gnutls.library.types
48
import ConfigParser as configparser
55
49
import sys
56
50
import re
57
51
import os
66
60
import struct
67
61
import fcntl
68
62
import functools
69
try:
70
import cPickle as pickle
71
except ImportError:
72
import pickle
63
import cPickle as pickle
73
64
import multiprocessing
74
65
import types
75
import binascii
76
import tempfile
77
import itertools
78
import collections
79
import codecs
80
import unittest
66
import hashlib
81
67
82
68
import dbus
83
69
import dbus.service
84
import gi
85
from gi.repository import GLib
70
import gobject
71
import avahi
86
72
from dbus.mainloop.glib import DBusGMainLoop
87
73
import ctypes
88
74
import ctypes.util
89
75
import xml.dom.minidom
90
76
import inspect
91
92
if sys.version_info.major == 2:
93
__metaclass__ = type
94
95
# Show warnings by default
96
if not sys.warnoptions:
97
import warnings
98
warnings.simplefilter("default")
99
100
# Try to find the value of SO_BINDTODEVICE:
77
import Crypto.Cipher.AES
78
101
79
try:
102
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
103
# newer, and it is also the most natural place for it:
104
80
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
105
81
except AttributeError:
106
82
try:
107
# This is where SO_BINDTODEVICE was up to and including Python
108
# 2.6, and also 3.2:
109
83
from IN import SO_BINDTODEVICE
110
84
except ImportError:
111
# In Python 2.7 it seems to have been removed entirely.
112
# Try running the C preprocessor:
113
try:
114
cc = subprocess.Popen(["cc", "--language=c", "-E",
115
"/dev/stdin"],
116
stdin=subprocess.PIPE,
117
stdout=subprocess.PIPE)
118
stdout = cc.communicate(
119
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
120
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
121
except (OSError, ValueError, IndexError):
122
# No value found
123
SO_BINDTODEVICE = None
124
125
if sys.version_info.major == 2:
126
str = unicode
127
128
if sys.version_info < (3, 2):
129
configparser.Configparser = configparser.SafeConfigParser
130
131
version = "1.8.8"
132
stored_state_file = "clients.pickle"
85
SO_BINDTODEVICE = None
86
87
88
version = "1.4.1"
89
stored_state_path = "/var/lib/mandos/clients.pickle"
133
90
134
91
logger = logging.getLogger()
135
logging.captureWarnings(True) # Show warnings via the logging system
136
syslogger = None
92
syslogger = (logging.handlers.SysLogHandler
93
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
94
address = str("/dev/log")))
137
95
138
96
try:
139
if_nametoindex = ctypes.cdll.LoadLibrary(
140
ctypes.util.find_library("c")).if_nametoindex
97
if_nametoindex = (ctypes.cdll.LoadLibrary
98
(ctypes.util.find_library("c"))
99
.if_nametoindex)
141
100
except (OSError, AttributeError):
142
143
101
def if_nametoindex(interface):
144
102
"Get an interface index the hard way, i.e. using fcntl()"
145
103
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
146
104
with contextlib.closing(socket.socket()) as s:
147
105
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
148
struct.pack(b"16s16x", interface))
149
interface_index = struct.unpack("I", ifreq[16:20])[0]
106
struct.pack(str("16s16x"),
107
interface))
108
interface_index = struct.unpack(str("I"),
109
ifreq[16:20])[0]
150
110
return interface_index
151
111
152
112
153
def copy_function(func):
154
"""Make a copy of a function"""
155
if sys.version_info.major == 2:
156
return types.FunctionType(func.func_code,
157
func.func_globals,
158
func.func_name,
159
func.func_defaults,
160
func.func_closure)
161
else:
162
return types.FunctionType(func.__code__,
163
func.__globals__,
164
func.__name__,
165
func.__defaults__,
166
func.__closure__)
167
168
169
def initlogger(debug, level=logging.WARNING):
113
def initlogger(level=logging.WARNING):
170
114
"""init logger and add loglevel"""
171
172
global syslogger
173
syslogger = (logging.handlers.SysLogHandler(
174
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
175
address="/dev/log"))
115
176
116
syslogger.setFormatter(logging.Formatter
177
117
('Mandos [%(process)d]: %(levelname)s:'
178
118
' %(message)s'))
179
119
logger.addHandler(syslogger)
180
181
if debug:
182
console = logging.StreamHandler()
183
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
184
' [%(process)d]:'
185
' %(levelname)s:'
186
' %(message)s'))
187
logger.addHandler(console)
120
121
console = logging.StreamHandler()
122
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
123
' [%(process)d]:'
124
' %(levelname)s:'
125
' %(message)s'))
126
logger.addHandler(console)
188
127
logger.setLevel(level)
189
128
190
129
191
class PGPError(Exception):
192
"""Exception if encryption/decryption fails"""
193
pass
194
195
196
class PGPEngine:
197
"""A simple class for OpenPGP symmetric encryption & decryption"""
198
199
def __init__(self):
200
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
201
self.gpg = "gpg"
202
try:
203
output = subprocess.check_output(["gpgconf"])
204
for line in output.splitlines():
205
name, text, path = line.split(b":")
206
if name == "gpg":
207
self.gpg = path
208
break
209
except OSError as e:
210
if e.errno != errno.ENOENT:
211
raise
212
self.gnupgargs = ['--batch',
213
'--homedir', self.tempdir,
214
'--force-mdc',
215
'--quiet']
216
# Only GPG version 1 has the --no-use-agent option.
217
if self.gpg == "gpg" or self.gpg.endswith("/gpg"):
218
self.gnupgargs.append("--no-use-agent")
219
220
def __enter__(self):
221
return self
222
223
def __exit__(self, exc_type, exc_value, traceback):
224
self._cleanup()
225
return False
226
227
def __del__(self):
228
self._cleanup()
229
230
def _cleanup(self):
231
if self.tempdir is not None:
232
# Delete contents of tempdir
233
for root, dirs, files in os.walk(self.tempdir,
234
topdown=False):
235
for filename in files:
236
os.remove(os.path.join(root, filename))
237
for dirname in dirs:
238
os.rmdir(os.path.join(root, dirname))
239
# Remove tempdir
240
os.rmdir(self.tempdir)
241
self.tempdir = None
242
243
def password_encode(self, password):
244
# Passphrase can not be empty and can not contain newlines or
245
# NUL bytes. So we prefix it and hex encode it.
246
encoded = b"mandos" + binascii.hexlify(password)
247
if len(encoded) > 2048:
248
# GnuPG can't handle long passwords, so encode differently
249
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
250
.replace(b"\n", b"\\n")
251
.replace(b"\0", b"\\x00"))
252
return encoded
253
254
def encrypt(self, data, password):
255
passphrase = self.password_encode(password)
256
with tempfile.NamedTemporaryFile(
257
dir=self.tempdir) as passfile:
258
passfile.write(passphrase)
259
passfile.flush()
260
proc = subprocess.Popen([self.gpg, '--symmetric',
261
'--passphrase-file',
262
passfile.name]
263
+ self.gnupgargs,
264
stdin=subprocess.PIPE,
265
stdout=subprocess.PIPE,
266
stderr=subprocess.PIPE)
267
ciphertext, err = proc.communicate(input=data)
268
if proc.returncode != 0:
269
raise PGPError(err)
270
return ciphertext
271
272
def decrypt(self, data, password):
273
passphrase = self.password_encode(password)
274
with tempfile.NamedTemporaryFile(
275
dir=self.tempdir) as passfile:
276
passfile.write(passphrase)
277
passfile.flush()
278
proc = subprocess.Popen([self.gpg, '--decrypt',
279
'--passphrase-file',
280
passfile.name]
281
+ self.gnupgargs,
282
stdin=subprocess.PIPE,
283
stdout=subprocess.PIPE,
284
stderr=subprocess.PIPE)
285
decrypted_plaintext, err = proc.communicate(input=data)
286
if proc.returncode != 0:
287
raise PGPError(err)
288
return decrypted_plaintext
289
290
291
# Pretend that we have an Avahi module
292
class avahi:
293
"""This isn't so much a class as it is a module-like namespace."""
294
IF_UNSPEC = -1 # avahi-common/address.h
295
PROTO_UNSPEC = -1 # avahi-common/address.h
296
PROTO_INET = 0 # avahi-common/address.h
297
PROTO_INET6 = 1 # avahi-common/address.h
298
DBUS_NAME = "org.freedesktop.Avahi"
299
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
300
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
301
DBUS_PATH_SERVER = "/"
302
303
@staticmethod
304
def string_array_to_txt_array(t):
305
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
306
for s in t), signature="ay")
307
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
308
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
309
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
310
SERVER_INVALID = 0 # avahi-common/defs.h
311
SERVER_REGISTERING = 1 # avahi-common/defs.h
312
SERVER_RUNNING = 2 # avahi-common/defs.h
313
SERVER_COLLISION = 3 # avahi-common/defs.h
314
SERVER_FAILURE = 4 # avahi-common/defs.h
315
316
317
130
class AvahiError(Exception):
318
131
def __init__(self, value, *args, **kwargs):
319
132
self.value = value
320
return super(AvahiError, self).__init__(value, *args,
321
**kwargs)
322
133
super(AvahiError, self).__init__(value, *args, **kwargs)
134
def __unicode__(self):
135
return unicode(repr(self.value))
323
136
324
137
class AvahiServiceError(AvahiError):
325
138
pass
326
139
327
328
140
class AvahiGroupError(AvahiError):
329
141
pass
330
142
331
143
332
class AvahiService:
144
class AvahiService(object):
333
145
"""An Avahi (Zeroconf) service.
334
146
335
147
Attributes:
336
148
interface: integer; avahi.IF_UNSPEC or an interface index.
337
149
Used to optionally bind to the specified interface.
338
150
name: string; Example: 'Mandos'
339
151
type: string; Example: '_mandos._tcp'.
340
See <https://www.iana.org/assignments/service-names-port-numbers>
152
See <http://www.dns-sd.org/ServiceTypes.html>
341
153
port: integer; what port to announce
342
154
TXT: list of strings; TXT record for the service
343
155
domain: string; Domain to publish on, default to .local if empty.
349
161
server: D-Bus Server
350
162
bus: dbus.SystemBus()
351
163
"""
352
353
def __init__(self,
354
interface=avahi.IF_UNSPEC,
355
name=None,
356
servicetype=None,
357
port=None,
358
TXT=None,
359
domain="",
360
host="",
361
max_renames=32768,
362
protocol=avahi.PROTO_UNSPEC,
363
bus=None):
164
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
165
servicetype = None, port = None, TXT = None,
166
domain = "", host = "", max_renames = 32768,
167
protocol = avahi.PROTO_UNSPEC, bus = None):
364
168
self.interface = interface
365
169
self.name = name
366
170
self.type = servicetype
375
179
self.server = None
376
180
self.bus = bus
377
181
self.entry_group_state_changed_match = None
378
379
def rename(self, remove=True):
182
def rename(self):
380
183
"""Derived from the Avahi example code"""
381
184
if self.rename_count >= self.max_renames:
382
185
logger.critical("No suitable Zeroconf service name found"
383
186
" after %i retries, exiting.",
384
187
self.rename_count)
385
188
raise AvahiServiceError("Too many renames")
386
self.name = str(
387
self.server.GetAlternativeServiceName(self.name))
388
self.rename_count += 1
189
self.name = unicode(self.server
190
.GetAlternativeServiceName(self.name))
389
191
logger.info("Changing Zeroconf service name to %r ...",
390
192
self.name)
391
if remove:
392
self.remove()
193
self.remove()
393
194
try:
394
195
self.add()
395
196
except dbus.exceptions.DBusException as error:
396
if (error.get_dbus_name()
397
== "org.freedesktop.Avahi.CollisionError"):
398
logger.info("Local Zeroconf service name collision.")
399
return self.rename(remove=False)
400
else:
401
logger.critical("D-Bus Exception", exc_info=error)
402
self.cleanup()
403
os._exit(1)
404
197
logger.critical("DBusException: %s", error)
198
self.cleanup()
199
os._exit(1)
200
self.rename_count += 1
405
201
def remove(self):
406
202
"""Derived from the Avahi example code"""
407
203
if self.entry_group_state_changed_match is not None:
409
205
self.entry_group_state_changed_match = None
410
206
if self.group is not None:
411
207
self.group.Reset()
412
413
208
def add(self):
414
209
"""Derived from the Avahi example code"""
415
210
self.remove()
432
227
dbus.UInt16(self.port),
433
228
avahi.string_array_to_txt_array(self.TXT))
434
229
self.group.Commit()
435
436
230
def entry_group_state_changed(self, state, error):
437
231
"""Derived from the Avahi example code"""
438
232
logger.debug("Avahi entry group state change: %i", state)
439
233
440
234
if state == avahi.ENTRY_GROUP_ESTABLISHED:
441
235
logger.debug("Zeroconf service established.")
442
236
elif state == avahi.ENTRY_GROUP_COLLISION:
444
238
self.rename()
445
239
elif state == avahi.ENTRY_GROUP_FAILURE:
446
240
logger.critical("Avahi: Error in group state changed %s",
447
str(error))
448
raise AvahiGroupError("State changed: {!s}".format(error))
449
241
unicode(error))
242
raise AvahiGroupError("State changed: %s"
243
% unicode(error))
450
244
def cleanup(self):
451
245
"""Derived from the Avahi example code"""
452
246
if self.group is not None:
457
251
pass
458
252
self.group = None
459
253
self.remove()
460
461
254
def server_state_changed(self, state, error=None):
462
255
"""Derived from the Avahi example code"""
463
256
logger.debug("Avahi server state change: %i", state)
464
bad_states = {
465
avahi.SERVER_INVALID: "Zeroconf server invalid",
466
avahi.SERVER_REGISTERING: None,
467
avahi.SERVER_COLLISION: "Zeroconf server name collision",
468
avahi.SERVER_FAILURE: "Zeroconf server failure",
469
}
257
bad_states = { avahi.SERVER_INVALID:
258
"Zeroconf server invalid",
259
avahi.SERVER_REGISTERING: None,
260
avahi.SERVER_COLLISION:
261
"Zeroconf server name collision",
262
avahi.SERVER_FAILURE:
263
"Zeroconf server failure" }
470
264
if state in bad_states:
471
265
if bad_states[state] is not None:
472
266
if error is None:
475
269
logger.error(bad_states[state] + ": %r", error)
476
270
self.cleanup()
477
271
elif state == avahi.SERVER_RUNNING:
478
try:
479
self.add()
480
except dbus.exceptions.DBusException as error:
481
if (error.get_dbus_name()
482
== "org.freedesktop.Avahi.CollisionError"):
483
logger.info("Local Zeroconf service name"
484
" collision.")
485
return self.rename(remove=False)
486
else:
487
logger.critical("D-Bus Exception", exc_info=error)
488
self.cleanup()
489
os._exit(1)
272
self.add()
490
273
else:
491
274
if error is None:
492
275
logger.debug("Unknown state: %r", state)
493
276
else:
494
277
logger.debug("Unknown state: %r: %r", state, error)
495
496
278
def activate(self):
497
279
"""Derived from the Avahi example code"""
498
280
if self.server is None:
502
284
follow_name_owner_changes=True),
503
285
avahi.DBUS_INTERFACE_SERVER)
504
286
self.server.connect_to_signal("StateChanged",
505
self.server_state_changed)
287
self.server_state_changed)
506
288
self.server_state_changed(self.server.GetState())
507
289
508
509
290
class AvahiServiceToSyslog(AvahiService):
510
def rename(self, *args, **kwargs):
291
def rename(self):
511
292
"""Add the new name to the syslog messages"""
512
ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
513
syslogger.setFormatter(logging.Formatter(
514
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
515
.format(self.name)))
293
ret = AvahiService.rename(self)
294
syslogger.setFormatter(logging.Formatter
295
('Mandos (%s) [%%(process)d]:'
296
' %%(levelname)s: %%(message)s'
297
% self.name))
516
298
return ret
517
299
518
519
# Pretend that we have a GnuTLS module
520
class gnutls:
521
"""This isn't so much a class as it is a module-like namespace."""
522
523
library = ctypes.util.find_library("gnutls")
524
if library is None:
525
library = ctypes.util.find_library("gnutls-deb0")
526
_library = ctypes.cdll.LoadLibrary(library)
527
del library
528
529
# Unless otherwise indicated, the constants and types below are
530
# all from the gnutls/gnutls.h C header file.
531
532
# Constants
533
E_SUCCESS = 0
534
E_INTERRUPTED = -52
535
E_AGAIN = -28
536
CRT_OPENPGP = 2
537
CRT_RAWPK = 3
538
CLIENT = 2
539
SHUT_RDWR = 0
540
CRD_CERTIFICATE = 1
541
E_NO_CERTIFICATE_FOUND = -49
542
X509_FMT_DER = 0
543
NO_TICKETS = 1<<10
544
ENABLE_RAWPK = 1<<18
545
CTYPE_PEERS = 3
546
KEYID_USE_SHA256 = 1 # gnutls/x509.h
547
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
548
549
# Types
550
class session_int(ctypes.Structure):
551
_fields_ = []
552
session_t = ctypes.POINTER(session_int)
553
554
class certificate_credentials_st(ctypes.Structure):
555
_fields_ = []
556
certificate_credentials_t = ctypes.POINTER(
557
certificate_credentials_st)
558
certificate_type_t = ctypes.c_int
559
560
class datum_t(ctypes.Structure):
561
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
562
('size', ctypes.c_uint)]
563
564
class openpgp_crt_int(ctypes.Structure):
565
_fields_ = []
566
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
567
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
568
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
569
credentials_type_t = ctypes.c_int
570
transport_ptr_t = ctypes.c_void_p
571
close_request_t = ctypes.c_int
572
573
# Exceptions
574
class Error(Exception):
575
def __init__(self, message=None, code=None, args=()):
576
# Default usage is by a message string, but if a return
577
# code is passed, convert it to a string with
578
# gnutls.strerror()
579
self.code = code
580
if message is None and code is not None:
581
message = gnutls.strerror(code)
582
return super(gnutls.Error, self).__init__(
583
message, *args)
584
585
class CertificateSecurityError(Error):
586
pass
587
588
# Classes
589
class Credentials:
590
def __init__(self):
591
self._c_object = gnutls.certificate_credentials_t()
592
gnutls.certificate_allocate_credentials(
593
ctypes.byref(self._c_object))
594
self.type = gnutls.CRD_CERTIFICATE
595
596
def __del__(self):
597
gnutls.certificate_free_credentials(self._c_object)
598
599
class ClientSession:
600
def __init__(self, socket, credentials=None):
601
self._c_object = gnutls.session_t()
602
gnutls_flags = gnutls.CLIENT
603
if gnutls.check_version(b"3.5.6"):
604
gnutls_flags |= gnutls.NO_TICKETS
605
if gnutls.has_rawpk:
606
gnutls_flags |= gnutls.ENABLE_RAWPK
607
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
608
del gnutls_flags
609
gnutls.set_default_priority(self._c_object)
610
gnutls.transport_set_ptr(self._c_object, socket.fileno())
611
gnutls.handshake_set_private_extensions(self._c_object,
612
True)
613
self.socket = socket
614
if credentials is None:
615
credentials = gnutls.Credentials()
616
gnutls.credentials_set(self._c_object, credentials.type,
617
ctypes.cast(credentials._c_object,
618
ctypes.c_void_p))
619
self.credentials = credentials
620
621
def __del__(self):
622
gnutls.deinit(self._c_object)
623
624
def handshake(self):
625
return gnutls.handshake(self._c_object)
626
627
def send(self, data):
628
data = bytes(data)
629
data_len = len(data)
630
while data_len > 0:
631
data_len -= gnutls.record_send(self._c_object,
632
data[-data_len:],
633
data_len)
634
635
def bye(self):
636
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
637
638
# Error handling functions
639
def _error_code(result):
640
"""A function to raise exceptions on errors, suitable
641
for the 'restype' attribute on ctypes functions"""
642
if result >= 0:
643
return result
644
if result == gnutls.E_NO_CERTIFICATE_FOUND:
645
raise gnutls.CertificateSecurityError(code=result)
646
raise gnutls.Error(code=result)
647
648
def _retry_on_error(result, func, arguments):
649
"""A function to retry on some errors, suitable
650
for the 'errcheck' attribute on ctypes functions"""
651
while result < 0:
652
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
653
return _error_code(result)
654
result = func(*arguments)
655
return result
656
657
# Unless otherwise indicated, the function declarations below are
658
# all from the gnutls/gnutls.h C header file.
659
660
# Functions
661
priority_set_direct = _library.gnutls_priority_set_direct
662
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
663
ctypes.POINTER(ctypes.c_char_p)]
664
priority_set_direct.restype = _error_code
665
666
init = _library.gnutls_init
667
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
668
init.restype = _error_code
669
670
set_default_priority = _library.gnutls_set_default_priority
671
set_default_priority.argtypes = [session_t]
672
set_default_priority.restype = _error_code
673
674
record_send = _library.gnutls_record_send
675
record_send.argtypes = [session_t, ctypes.c_void_p,
676
ctypes.c_size_t]
677
record_send.restype = ctypes.c_ssize_t
678
record_send.errcheck = _retry_on_error
679
680
certificate_allocate_credentials = (
681
_library.gnutls_certificate_allocate_credentials)
682
certificate_allocate_credentials.argtypes = [
683
ctypes.POINTER(certificate_credentials_t)]
684
certificate_allocate_credentials.restype = _error_code
685
686
certificate_free_credentials = (
687
_library.gnutls_certificate_free_credentials)
688
certificate_free_credentials.argtypes = [
689
certificate_credentials_t]
690
certificate_free_credentials.restype = None
691
692
handshake_set_private_extensions = (
693
_library.gnutls_handshake_set_private_extensions)
694
handshake_set_private_extensions.argtypes = [session_t,
695
ctypes.c_int]
696
handshake_set_private_extensions.restype = None
697
698
credentials_set = _library.gnutls_credentials_set
699
credentials_set.argtypes = [session_t, credentials_type_t,
700
ctypes.c_void_p]
701
credentials_set.restype = _error_code
702
703
strerror = _library.gnutls_strerror
704
strerror.argtypes = [ctypes.c_int]
705
strerror.restype = ctypes.c_char_p
706
707
certificate_type_get = _library.gnutls_certificate_type_get
708
certificate_type_get.argtypes = [session_t]
709
certificate_type_get.restype = _error_code
710
711
certificate_get_peers = _library.gnutls_certificate_get_peers
712
certificate_get_peers.argtypes = [session_t,
713
ctypes.POINTER(ctypes.c_uint)]
714
certificate_get_peers.restype = ctypes.POINTER(datum_t)
715
716
global_set_log_level = _library.gnutls_global_set_log_level
717
global_set_log_level.argtypes = [ctypes.c_int]
718
global_set_log_level.restype = None
719
720
global_set_log_function = _library.gnutls_global_set_log_function
721
global_set_log_function.argtypes = [log_func]
722
global_set_log_function.restype = None
723
724
deinit = _library.gnutls_deinit
725
deinit.argtypes = [session_t]
726
deinit.restype = None
727
728
handshake = _library.gnutls_handshake
729
handshake.argtypes = [session_t]
730
handshake.restype = _error_code
731
handshake.errcheck = _retry_on_error
732
733
transport_set_ptr = _library.gnutls_transport_set_ptr
734
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
735
transport_set_ptr.restype = None
736
737
bye = _library.gnutls_bye
738
bye.argtypes = [session_t, close_request_t]
739
bye.restype = _error_code
740
bye.errcheck = _retry_on_error
741
742
check_version = _library.gnutls_check_version
743
check_version.argtypes = [ctypes.c_char_p]
744
check_version.restype = ctypes.c_char_p
745
746
_need_version = b"3.3.0"
747
if check_version(_need_version) is None:
748
raise self.Error("Needs GnuTLS {} or later"
749
.format(_need_version))
750
751
_tls_rawpk_version = b"3.6.6"
752
has_rawpk = bool(check_version(_tls_rawpk_version))
753
754
if has_rawpk:
755
# Types
756
class pubkey_st(ctypes.Structure):
757
_fields = []
758
pubkey_t = ctypes.POINTER(pubkey_st)
759
760
x509_crt_fmt_t = ctypes.c_int
761
762
# All the function declarations below are from gnutls/abstract.h
763
pubkey_init = _library.gnutls_pubkey_init
764
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
765
pubkey_init.restype = _error_code
766
767
pubkey_import = _library.gnutls_pubkey_import
768
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
769
x509_crt_fmt_t]
770
pubkey_import.restype = _error_code
771
772
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
773
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
774
ctypes.POINTER(ctypes.c_ubyte),
775
ctypes.POINTER(ctypes.c_size_t)]
776
pubkey_get_key_id.restype = _error_code
777
778
pubkey_deinit = _library.gnutls_pubkey_deinit
779
pubkey_deinit.argtypes = [pubkey_t]
780
pubkey_deinit.restype = None
781
else:
782
# All the function declarations below are from gnutls/openpgp.h
783
784
openpgp_crt_init = _library.gnutls_openpgp_crt_init
785
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
786
openpgp_crt_init.restype = _error_code
787
788
openpgp_crt_import = _library.gnutls_openpgp_crt_import
789
openpgp_crt_import.argtypes = [openpgp_crt_t,
790
ctypes.POINTER(datum_t),
791
openpgp_crt_fmt_t]
792
openpgp_crt_import.restype = _error_code
793
794
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
795
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
796
ctypes.POINTER(ctypes.c_uint)]
797
openpgp_crt_verify_self.restype = _error_code
798
799
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
800
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
801
openpgp_crt_deinit.restype = None
802
803
openpgp_crt_get_fingerprint = (
804
_library.gnutls_openpgp_crt_get_fingerprint)
805
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
806
ctypes.c_void_p,
807
ctypes.POINTER(
808
ctypes.c_size_t)]
809
openpgp_crt_get_fingerprint.restype = _error_code
810
811
if check_version(b"3.6.4"):
812
certificate_type_get2 = _library.gnutls_certificate_type_get2
813
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
814
certificate_type_get2.restype = _error_code
815
816
# Remove non-public functions
817
del _error_code, _retry_on_error
818
819
820
def call_pipe(connection, # : multiprocessing.Connection
821
func, *args, **kwargs):
822
"""This function is meant to be called by multiprocessing.Process
823
824
This function runs func(*args, **kwargs), and writes the resulting
825
return value on the provided multiprocessing.Connection.
826
"""
827
connection.send(func(*args, **kwargs))
828
connection.close()
829
830
831
class Client:
300
def _timedelta_to_milliseconds(td):
301
"Convert a datetime.timedelta() to milliseconds"
302
return ((td.days * 24 * 60 * 60 * 1000)
303
+ (td.seconds * 1000)
304
+ (td.microseconds // 1000))
305
306
class Client(object):
832
307
"""A representation of a client host served by this server.
833
308
834
309
Attributes:
835
approved: bool(); 'None' if not yet approved/disapproved
310
_approved: bool(); 'None' if not yet approved/disapproved
836
311
approval_delay: datetime.timedelta(); Time to wait for approval
837
312
approval_duration: datetime.timedelta(); Duration of one approval
838
checker: multiprocessing.Process(); a running checker process used
839
to see if the client lives. 'None' if no process is
840
running.
841
checker_callback_tag: a GLib event source tag, or None
313
checker: subprocess.Popen(); a running checker process used
314
to see if the client lives.
315
'None' if no process is running.
316
checker_callback_tag: a gobject event source tag, or None
842
317
checker_command: string; External command which is run to check
843
318
if client lives. %() expansions are done at
844
319
runtime with vars(self) as dict, so that for
845
320
instance %(name)s can be used in the command.
846
checker_initiator_tag: a GLib event source tag, or None
321
checker_initiator_tag: a gobject event source tag, or None
847
322
created: datetime.datetime(); (UTC) object creation
848
323
client_structure: Object describing what attributes a client has
849
324
and is used for storing the client at exit
850
325
current_checker_command: string; current running checker_command
851
disable_initiator_tag: a GLib event source tag, or None
326
disable_initiator_tag: a gobject event source tag, or None
852
327
enabled: bool()
853
328
fingerprint: string (40 or 32 hexadecimal digits); used to
854
uniquely identify an OpenPGP client
855
key_id: string (64 hexadecimal digits); used to uniquely identify
856
a client using raw public keys
329
uniquely identify the client
857
330
host: string; available for use by the checker command
858
331
interval: datetime.timedelta(); How often to start a new checker
859
332
last_approval_request: datetime.datetime(); (UTC) or None
860
333
last_checked_ok: datetime.datetime(); (UTC) or None
861
last_checker_status: integer between 0 and 255 reflecting exit
862
status of last checker. -1 reflects crashed
863
checker, -2 means no checker completed yet.
864
last_checker_signal: The signal which killed the last checker, if
865
last_checker_status is -1
866
last_enabled: datetime.datetime(); (UTC) or None
334
last_checker_status: integer between 0 and 255 reflecting exit status
335
of last checker. -1 reflect crashed checker,
336
or None.
337
last_enabled: datetime.datetime(); (UTC)
867
338
name: string; from the config file, used in log messages and
868
339
D-Bus identifiers
869
340
secret: bytestring; sent verbatim (over TLS) to client
870
341
timeout: datetime.timedelta(); How long from last_checked_ok
871
342
until this client is disabled
872
extended_timeout: extra long timeout when secret has been sent
343
extended_timeout: extra long timeout when password has been sent
873
344
runtime_expansions: Allowed attributes for runtime expansion.
874
345
expires: datetime.datetime(); time (UTC) when a client will be
875
346
disabled, or None
876
server_settings: The server_settings dict from main()
877
347
"""
878
348
879
349
runtime_expansions = ("approval_delay", "approval_duration",
880
"created", "enabled", "expires", "key_id",
881
"fingerprint", "host", "interval",
882
"last_approval_request", "last_checked_ok",
350
"created", "enabled", "fingerprint",
351
"host", "interval", "last_checked_ok",
883
352
"last_enabled", "name", "timeout")
884
client_defaults = {
885
"timeout": "PT5M",
886
"extended_timeout": "PT15M",
887
"interval": "PT2M",
888
"checker": "fping -q -- %%(host)s",
889
"host": "",
890
"approval_delay": "PT0S",
891
"approval_duration": "PT1S",
892
"approved_by_default": "True",
893
"enabled": "True",
894
}
895
896
@staticmethod
897
def config_parser(config):
898
"""Construct a new dict of client settings of this form:
899
{ client_name: {setting_name: value, ...}, ...}
900
with exceptions for any special settings as defined above.
901
NOTE: Must be a pure function. Must return the same result
902
value given the same arguments.
903
"""
904
settings = {}
905
for client_name in config.sections():
906
section = dict(config.items(client_name))
907
client = settings[client_name] = {}
908
909
client["host"] = section["host"]
910
# Reformat values from string types to Python types
911
client["approved_by_default"] = config.getboolean(
912
client_name, "approved_by_default")
913
client["enabled"] = config.getboolean(client_name,
914
"enabled")
915
916
# Uppercase and remove spaces from key_id and fingerprint
917
# for later comparison purposes with return value from the
918
# key_id() and fingerprint() functions
919
client["key_id"] = (section.get("key_id", "").upper()
920
.replace(" ", ""))
921
client["fingerprint"] = (section["fingerprint"].upper()
922
.replace(" ", ""))
923
if "secret" in section:
924
client["secret"] = codecs.decode(section["secret"]
925
.encode("utf-8"),
926
"base64")
927
elif "secfile" in section:
928
with open(os.path.expanduser(os.path.expandvars
929
(section["secfile"])),
930
"rb") as secfile:
931
client["secret"] = secfile.read()
932
else:
933
raise TypeError("No secret or secfile for section {}"
934
.format(section))
935
client["timeout"] = string_to_delta(section["timeout"])
936
client["extended_timeout"] = string_to_delta(
937
section["extended_timeout"])
938
client["interval"] = string_to_delta(section["interval"])
939
client["approval_delay"] = string_to_delta(
940
section["approval_delay"])
941
client["approval_duration"] = string_to_delta(
942
section["approval_duration"])
943
client["checker_command"] = section["checker"]
944
client["last_approval_request"] = None
945
client["last_checked_ok"] = None
946
client["last_checker_status"] = -2
947
948
return settings
949
950
def __init__(self, settings, name=None, server_settings=None):
353
354
def timeout_milliseconds(self):
355
"Return the 'timeout' attribute in milliseconds"
356
return _timedelta_to_milliseconds(self.timeout)
357
358
def extended_timeout_milliseconds(self):
359
"Return the 'extended_timeout' attribute in milliseconds"
360
return _timedelta_to_milliseconds(self.extended_timeout)
361
362
def interval_milliseconds(self):
363
"Return the 'interval' attribute in milliseconds"
364
return _timedelta_to_milliseconds(self.interval)
365
366
def approval_delay_milliseconds(self):
367
return _timedelta_to_milliseconds(self.approval_delay)
368
369
def __init__(self, name = None, config=None):
370
"""Note: the 'checker' key in 'config' sets the
371
'checker_command' attribute and *not* the 'checker'
372
attribute."""
951
373
self.name = name
952
if server_settings is None:
953
server_settings = {}
954
self.server_settings = server_settings
955
# adding all client settings
956
for setting, value in settings.items():
957
setattr(self, setting, value)
958
959
if self.enabled:
960
if not hasattr(self, "last_enabled"):
961
self.last_enabled = datetime.datetime.utcnow()
962
if not hasattr(self, "expires"):
963
self.expires = (datetime.datetime.utcnow()
964
+ self.timeout)
965
else:
966
self.last_enabled = None
967
self.expires = None
968
374
if config is None:
375
config = {}
969
376
logger.debug("Creating client %r", self.name)
970
logger.debug(" Key ID: %s", self.key_id)
377
# Uppercase and remove spaces from fingerprint for later
378
# comparison purposes with return value from the fingerprint()
379
# function
380
self.fingerprint = (config["fingerprint"].upper()
381
.replace(" ", ""))
971
382
logger.debug(" Fingerprint: %s", self.fingerprint)
972
self.created = settings.get("created",
973
datetime.datetime.utcnow())
974
975
# attributes specific for this server instance
383
if "secret" in config:
384
self.secret = config["secret"].decode("base64")
385
elif "secfile" in config:
386
with open(os.path.expanduser(os.path.expandvars
387
(config["secfile"])),
388
"rb") as secfile:
389
self.secret = secfile.read()
390
else:
391
raise TypeError("No secret or secfile for client %s"
392
% self.name)
393
self.host = config.get("host", "")
394
self.created = datetime.datetime.utcnow()
395
self.enabled = True
396
self.last_approval_request = None
397
self.last_enabled = datetime.datetime.utcnow()
398
self.last_checked_ok = None
399
self.last_checker_status = None
400
self.timeout = string_to_delta(config["timeout"])
401
self.extended_timeout = string_to_delta(config
402
["extended_timeout"])
403
self.interval = string_to_delta(config["interval"])
976
404
self.checker = None
977
405
self.checker_initiator_tag = None
978
406
self.disable_initiator_tag = None
407
self.expires = datetime.datetime.utcnow() + self.timeout
979
408
self.checker_callback_tag = None
409
self.checker_command = config["checker"]
980
410
self.current_checker_command = None
981
self.approved = None
411
self._approved = None
412
self.approved_by_default = config.get("approved_by_default",
413
True)
982
414
self.approvals_pending = 0
983
self.changedstate = multiprocessing_manager.Condition(
984
multiprocessing_manager.Lock())
985
self.client_structure = [attr
986
for attr in self.__dict__.keys()
987
if not attr.startswith("_")]
415
self.approval_delay = string_to_delta(
416
config["approval_delay"])
417
self.approval_duration = string_to_delta(
418
config["approval_duration"])
419
self.changedstate = (multiprocessing_manager
420
.Condition(multiprocessing_manager
421
.Lock()))
422
self.client_structure = [attr for attr in self.__dict__.iterkeys() if not attr.startswith("_")]
988
423
self.client_structure.append("client_structure")
989
424
990
for name, t in inspect.getmembers(
991
type(self), lambda obj: isinstance(obj, property)):
425
426
for name, t in inspect.getmembers(type(self),
427
lambda obj: isinstance(obj, property)):
992
428
if not name.startswith("_"):
993
429
self.client_structure.append(name)
994
430
995
431
# Send notice to process children that client state has changed
996
432
def send_changedstate(self):
997
433
with self.changedstate:
998
434
self.changedstate.notify_all()
999
435
1000
436
def enable(self):
1001
437
"""Start this client's checker and timeout hooks"""
1002
438
if getattr(self, "enabled", False):
1003
439
# Already enabled
1004
440
return
441
self.send_changedstate()
1005
442
self.expires = datetime.datetime.utcnow() + self.timeout
1006
443
self.enabled = True
1007
444
self.last_enabled = datetime.datetime.utcnow()
1008
445
self.init_checker()
1009
self.send_changedstate()
1010
446
1011
447
def disable(self, quiet=True):
1012
448
"""Disable this client."""
1013
449
if not getattr(self, "enabled", False):
1014
450
return False
1015
451
if not quiet:
452
self.send_changedstate()
453
if not quiet:
1016
454
logger.info("Disabling client %s", self.name)
1017
if getattr(self, "disable_initiator_tag", None) is not None:
1018
GLib.source_remove(self.disable_initiator_tag)
455
if getattr(self, "disable_initiator_tag", False):
456
gobject.source_remove(self.disable_initiator_tag)
1019
457
self.disable_initiator_tag = None
1020
458
self.expires = None
1021
if getattr(self, "checker_initiator_tag", None) is not None:
1022
GLib.source_remove(self.checker_initiator_tag)
459
if getattr(self, "checker_initiator_tag", False):
460
gobject.source_remove(self.checker_initiator_tag)
1023
461
self.checker_initiator_tag = None
1024
462
self.stop_checker()
1025
463
self.enabled = False
1026
if not quiet:
1027
self.send_changedstate()
1028
# Do not run this again if called by a GLib.timeout_add
464
# Do not run this again if called by a gobject.timeout_add
1029
465
return False
1030
466
1031
467
def __del__(self):
1032
468
self.disable()
1033
469
1034
470
def init_checker(self):
1035
471
# Schedule a new checker to be started an 'interval' from now,
1036
472
# and every interval from then on.
1037
if self.checker_initiator_tag is not None:
1038
GLib.source_remove(self.checker_initiator_tag)
1039
self.checker_initiator_tag = GLib.timeout_add(
1040
int(self.interval.total_seconds() * 1000),
1041
self.start_checker)
473
self.checker_initiator_tag = (gobject.timeout_add
474
(self.interval_milliseconds(),
475
self.start_checker))
1042
476
# Schedule a disable() when 'timeout' has passed
1043
if self.disable_initiator_tag is not None:
1044
GLib.source_remove(self.disable_initiator_tag)
1045
self.disable_initiator_tag = GLib.timeout_add(
1046
int(self.timeout.total_seconds() * 1000), self.disable)
477
self.disable_initiator_tag = (gobject.timeout_add
478
(self.timeout_milliseconds(),
479
self.disable))
1047
480
# Also start a new checker *right now*.
1048
481
self.start_checker()
1049
482
1050
def checker_callback(self, source, condition, connection,
1051
command):
483
484
def checker_callback(self, pid, condition, command):
1052
485
"""The checker has completed, so take appropriate actions."""
1053
# Read return code from connection (see call_pipe)
1054
returncode = connection.recv()
1055
connection.close()
1056
self.checker.join()
1057
486
self.checker_callback_tag = None
1058
487
self.checker = None
1059
1060
if returncode >= 0:
1061
self.last_checker_status = returncode
1062
self.last_checker_signal = None
488
if os.WIFEXITED(condition):
489
self.last_checker_status = os.WEXITSTATUS(condition)
1063
490
if self.last_checker_status == 0:
1064
491
logger.info("Checker for %(name)s succeeded",
1065
492
vars(self))
1066
493
self.checked_ok()
1067
494
else:
1068
logger.info("Checker for %(name)s failed", vars(self))
495
logger.info("Checker for %(name)s failed",
496
vars(self))
1069
497
else:
1070
498
self.last_checker_status = -1
1071
self.last_checker_signal = -returncode
1072
499
logger.warning("Checker for %(name)s crashed?",
1073
500
vars(self))
1074
return False
1075
1076
def checked_ok(self):
1077
"""Assert that the client has been seen, alive and well."""
1078
self.last_checked_ok = datetime.datetime.utcnow()
1079
self.last_checker_status = 0
1080
self.last_checker_signal = None
1081
self.bump_timeout()
1082
1083
def bump_timeout(self, timeout=None):
1084
"""Bump up the timeout for this client."""
501
502
def checked_ok(self, timeout=None):
503
"""Bump up the timeout for this client.
504
505
This should only be called when the client has been seen,
506
alive and well.
507
"""
1085
508
if timeout is None:
1086
509
timeout = self.timeout
510
self.last_checked_ok = datetime.datetime.utcnow()
1087
511
if self.disable_initiator_tag is not None:
1088
GLib.source_remove(self.disable_initiator_tag)
1089
self.disable_initiator_tag = None
512
gobject.source_remove(self.disable_initiator_tag)
1090
513
if getattr(self, "enabled", False):
1091
self.disable_initiator_tag = GLib.timeout_add(
1092
int(timeout.total_seconds() * 1000), self.disable)
514
self.disable_initiator_tag = (gobject.timeout_add
515
(_timedelta_to_milliseconds
516
(timeout), self.disable))
1093
517
self.expires = datetime.datetime.utcnow() + timeout
1094
518
1095
519
def need_approval(self):
1096
520
self.last_approval_request = datetime.datetime.utcnow()
1097
521
1098
522
def start_checker(self):
1099
523
"""Start a new checker subprocess if one is not running.
1100
524
1101
525
If a checker already exists, leave it running and do
1102
526
nothing."""
1103
527
# The reason for not killing a running checker is that if we
1104
# did that, and if a checker (for some reason) started running
1105
# slowly and taking more than 'interval' time, then the client
1106
# would inevitably timeout, since no checker would get a
1107
# chance to run to completion. If we instead leave running
528
# did that, then if a checker (for some reason) started
529
# running slowly and taking more than 'interval' time, the
530
# client would inevitably timeout, since no checker would get
531
# a chance to run to completion. If we instead leave running
1108
532
# checkers alone, the checker would have to take more time
1109
533
# than 'timeout' for the client to be disabled, which is as it
1110
534
# should be.
1111
1112
if self.checker is not None and not self.checker.is_alive():
1113
logger.warning("Checker was not alive; joining")
1114
self.checker.join()
1115
self.checker = None
535
536
# If a checker exists, make sure it is not a zombie
537
try:
538
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
539
except (AttributeError, OSError) as error:
540
if (isinstance(error, OSError)
541
and error.errno != errno.ECHILD):
542
raise error
543
else:
544
if pid:
545
logger.warning("Checker was a zombie")
546
gobject.source_remove(self.checker_callback_tag)
547
self.checker_callback(pid, status,
548
self.current_checker_command)
1116
549
# Start a new checker if needed
1117
550
if self.checker is None:
1118
# Escape attributes for the shell
1119
escaped_attrs = {
1120
attr: re.escape(str(getattr(self, attr)))
1121
for attr in self.runtime_expansions}
1122
551
try:
1123
command = self.checker_command % escaped_attrs
1124
except TypeError as error:
1125
logger.error('Could not format string "%s"',
1126
self.checker_command,
1127
exc_info=error)
1128
return True # Try again later
552
# In case checker_command has exactly one % operator
553
command = self.checker_command % self.host
554
except TypeError:
555
# Escape attributes for the shell
556
escaped_attrs = dict(
557
(attr,
558
re.escape(unicode(str(getattr(self, attr, "")),
559
errors=
560
'replace')))
561
for attr in
562
self.runtime_expansions)
563
564
try:
565
command = self.checker_command % escaped_attrs
566
except TypeError as error:
567
logger.error('Could not format string "%s":'
568
' %s', self.checker_command, error)
569
return True # Try again later
1129
570
self.current_checker_command = command
1130
logger.info("Starting checker %r for %s", command,
1131
self.name)
1132
# We don't need to redirect stdout and stderr, since
1133
# in normal mode, that is already done by daemon(),
1134
# and in debug mode we don't want to. (Stdin is
1135
# always replaced by /dev/null.)
1136
# The exception is when not debugging but nevertheless
1137
# running in the foreground; use the previously
1138
# created wnull.
1139
popen_args = {"close_fds": True,
1140
"shell": True,
1141
"cwd": "/"}
1142
if (not self.server_settings["debug"]
1143
and self.server_settings["foreground"]):
1144
popen_args.update({"stdout": wnull,
1145
"stderr": wnull})
1146
pipe = multiprocessing.Pipe(duplex=False)
1147
self.checker = multiprocessing.Process(
1148
target=call_pipe,
1149
args=(pipe[1], subprocess.call, command),
1150
kwargs=popen_args)
1151
self.checker.start()
1152
self.checker_callback_tag = GLib.io_add_watch(
1153
pipe[0].fileno(), GLib.IO_IN,
1154
self.checker_callback, pipe[0], command)
1155
# Re-run this periodically if run by GLib.timeout_add
571
try:
572
logger.info("Starting checker %r for %s",
573
command, self.name)
574
# We don't need to redirect stdout and stderr, since
575
# in normal mode, that is already done by daemon(),
576
# and in debug mode we don't want to. (Stdin is
577
# always replaced by /dev/null.)
578
self.checker = subprocess.Popen(command,
579
close_fds=True,
580
shell=True, cwd="/")
581
self.checker_callback_tag = (gobject.child_watch_add
582
(self.checker.pid,
583
self.checker_callback,
584
data=command))
585
# The checker may have completed before the gobject
586
# watch was added. Check for this.
587
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
588
if pid:
589
gobject.source_remove(self.checker_callback_tag)
590
self.checker_callback(pid, status, command)
591
except OSError as error:
592
logger.error("Failed to start subprocess: %s",
593
error)
594
# Re-run this periodically if run by gobject.timeout_add
1156
595
return True
1157
596
1158
597
def stop_checker(self):
1159
598
"""Force the checker process, if any, to stop."""
1160
599
if self.checker_callback_tag:
1161
GLib.source_remove(self.checker_callback_tag)
600
gobject.source_remove(self.checker_callback_tag)
1162
601
self.checker_callback_tag = None
1163
602
if getattr(self, "checker", None) is None:
1164
603
return
1165
604
logger.debug("Stopping checker for %(name)s", vars(self))
1166
self.checker.terminate()
605
try:
606
os.kill(self.checker.pid, signal.SIGTERM)
607
#time.sleep(0.5)
608
#if self.checker.poll() is None:
609
# os.kill(self.checker.pid, signal.SIGKILL)
610
except OSError as error:
611
if error.errno != errno.ESRCH: # No such process
612
raise
1167
613
self.checker = None
1168
614
1169
1170
def dbus_service_property(dbus_interface,
1171
signature="v",
1172
access="readwrite",
1173
byte_arrays=False):
615
# Encrypts a client secret and stores it in a varible encrypted_secret
616
def encrypt_secret(self, key):
617
# Encryption-key need to be of a specific size, so we hash inputed key
618
hasheng = hashlib.sha256()
619
hasheng.update(key)
620
encryptionkey = hasheng.digest()
621
622
# Create validation hash so we know at decryption if it was sucessful
623
hasheng = hashlib.sha256()
624
hasheng.update(self.secret)
625
validationhash = hasheng.digest()
626
627
# Encrypt secret
628
iv = os.urandom(Crypto.Cipher.AES.block_size)
629
ciphereng = Crypto.Cipher.AES.new(encryptionkey,
630
Crypto.Cipher.AES.MODE_CFB, iv)
631
ciphertext = ciphereng.encrypt(validationhash+self.secret)
632
self.encrypted_secret = (ciphertext, iv)
633
634
# Decrypt a encrypted client secret
635
def decrypt_secret(self, key):
636
# Decryption-key need to be of a specific size, so we hash inputed key
637
hasheng = hashlib.sha256()
638
hasheng.update(key)
639
encryptionkey = hasheng.digest()
640
641
# Decrypt encrypted secret
642
ciphertext, iv = self.encrypted_secret
643
ciphereng = Crypto.Cipher.AES.new(encryptionkey,
644
Crypto.Cipher.AES.MODE_CFB, iv)
645
plain = ciphereng.decrypt(ciphertext)
646
647
# Validate decrypted secret to know if it was succesful
648
hasheng = hashlib.sha256()
649
validationhash = plain[:hasheng.digest_size]
650
secret = plain[hasheng.digest_size:]
651
hasheng.update(secret)
652
653
# if validation fails, we use key as new secret. Otherwhise, we use
654
# the decrypted secret
655
if hasheng.digest() == validationhash:
656
self.secret = secret
657
else:
658
self.secret = key
659
del self.encrypted_secret
660
661
662
def dbus_service_property(dbus_interface, signature="v",
663
access="readwrite", byte_arrays=False):
1174
664
"""Decorators for marking methods of a DBusObjectWithProperties to
1175
665
become properties on the D-Bus.
1176
666
1177
667
The decorated method will be called with no arguments by "Get"
1178
668
and with one argument by "Set".
1179
669
1180
670
The parameters, where they are supported, are the same as
1181
671
dbus.service.method, except there is only "signature", since the
1182
672
type from Get() and the type sent to Set() is the same.
1185
675
# "Set" method, so we fail early here:
1186
676
if byte_arrays and signature != "ay":
1187
677
raise ValueError("Byte arrays not supported for non-'ay'"
1188
" signature {!r}".format(signature))
1189
678
" signature %r" % signature)
1190
679
def decorator(func):
1191
680
func._dbus_is_property = True
1192
681
func._dbus_interface = dbus_interface
1195
684
func._dbus_name = func.__name__
1196
685
if func._dbus_name.endswith("_dbus_property"):
1197
686
func._dbus_name = func._dbus_name[:-14]
1198
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
1199
return func
1200
1201
return decorator
1202
1203
1204
def dbus_interface_annotations(dbus_interface):
1205
"""Decorator for marking functions returning interface annotations
1206
1207
Usage:
1208
1209
@dbus_interface_annotations("org.example.Interface")
1210
def _foo(self): # Function name does not matter
1211
return {"org.freedesktop.DBus.Deprecated": "true",
1212
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1213
"false"}
1214
"""
1215
1216
def decorator(func):
1217
func._dbus_is_interface = True
1218
func._dbus_interface = dbus_interface
1219
func._dbus_name = dbus_interface
1220
return func
1221
1222
return decorator
1223
1224
1225
def dbus_annotations(annotations):
1226
"""Decorator to annotate D-Bus methods, signals or properties
1227
Usage:
1228
1229
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1230
"org.freedesktop.DBus.Property."
1231
"EmitsChangedSignal": "false"})
1232
@dbus_service_property("org.example.Interface", signature="b",
1233
access="r")
1234
def Property_dbus_property(self):
1235
return dbus.Boolean(False)
1236
1237
See also the DBusObjectWithAnnotations class.
1238
"""
1239
1240
def decorator(func):
1241
func._dbus_annotations = annotations
1242
return func
1243
687
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
688
return func
1244
689
return decorator
1245
690
1246
691
1247
692
class DBusPropertyException(dbus.exceptions.DBusException):
1248
693
"""A base class for D-Bus property-related exceptions
1249
694
"""
1250
pass
695
def __unicode__(self):
696
return unicode(str(self))
1251
697
1252
698
1253
699
class DBusPropertyAccessException(DBusPropertyException):
1262
708
pass
1263
709
1264
710
1265
class DBusObjectWithAnnotations(dbus.service.Object):
1266
"""A D-Bus object with annotations.
1267
1268
Classes inheriting from this can use the dbus_annotations
1269
decorator to add annotations to methods or signals.
1270
"""
1271
1272
@staticmethod
1273
def _is_dbus_thing(thing):
1274
"""Returns a function testing if an attribute is a D-Bus thing
1275
1276
If called like _is_dbus_thing("method") it returns a function
1277
suitable for use as predicate to inspect.getmembers().
1278
"""
1279
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1280
False)
1281
1282
def _get_all_dbus_things(self, thing):
1283
"""Returns a generator of (name, attribute) pairs
1284
"""
1285
return ((getattr(athing.__get__(self), "_dbus_name", name),
1286
athing.__get__(self))
1287
for cls in self.__class__.__mro__
1288
for name, athing in
1289
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1290
1291
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1292
out_signature="s",
1293
path_keyword='object_path',
1294
connection_keyword='connection')
1295
def Introspect(self, object_path, connection):
1296
"""Overloading of standard D-Bus method.
1297
1298
Inserts annotation tags on methods and signals.
1299
"""
1300
xmlstring = dbus.service.Object.Introspect(self, object_path,
1301
connection)
1302
try:
1303
document = xml.dom.minidom.parseString(xmlstring)
1304
1305
for if_tag in document.getElementsByTagName("interface"):
1306
# Add annotation tags
1307
for typ in ("method", "signal"):
1308
for tag in if_tag.getElementsByTagName(typ):
1309
annots = dict()
1310
for name, prop in (self.
1311
_get_all_dbus_things(typ)):
1312
if (name == tag.getAttribute("name")
1313
and prop._dbus_interface
1314
== if_tag.getAttribute("name")):
1315
annots.update(getattr(
1316
prop, "_dbus_annotations", {}))
1317
for name, value in annots.items():
1318
ann_tag = document.createElement(
1319
"annotation")
1320
ann_tag.setAttribute("name", name)
1321
ann_tag.setAttribute("value", value)
1322
tag.appendChild(ann_tag)
1323
# Add interface annotation tags
1324
for annotation, value in dict(
1325
itertools.chain.from_iterable(
1326
annotations().items()
1327
for name, annotations
1328
in self._get_all_dbus_things("interface")
1329
if name == if_tag.getAttribute("name")
1330
)).items():
1331
ann_tag = document.createElement("annotation")
1332
ann_tag.setAttribute("name", annotation)
1333
ann_tag.setAttribute("value", value)
1334
if_tag.appendChild(ann_tag)
1335
# Fix argument name for the Introspect method itself
1336
if (if_tag.getAttribute("name")
1337
== dbus.INTROSPECTABLE_IFACE):
1338
for cn in if_tag.getElementsByTagName("method"):
1339
if cn.getAttribute("name") == "Introspect":
1340
for arg in cn.getElementsByTagName("arg"):
1341
if (arg.getAttribute("direction")
1342
== "out"):
1343
arg.setAttribute("name",
1344
"xml_data")
1345
xmlstring = document.toxml("utf-8")
1346
document.unlink()
1347
except (AttributeError, xml.dom.DOMException,
1348
xml.parsers.expat.ExpatError) as error:
1349
logger.error("Failed to override Introspection method",
1350
exc_info=error)
1351
return xmlstring
1352
1353
1354
class DBusObjectWithProperties(DBusObjectWithAnnotations):
711
class DBusObjectWithProperties(dbus.service.Object):
1355
712
"""A D-Bus object with properties.
1356
713
1357
714
Classes inheriting from this can use the dbus_service_property
1358
715
decorator to expose methods as D-Bus properties. It exposes the
1359
716
standard Get(), Set(), and GetAll() methods on the D-Bus.
1360
717
"""
1361
718
719
@staticmethod
720
def _is_dbus_property(obj):
721
return getattr(obj, "_dbus_is_property", False)
722
723
def _get_all_dbus_properties(self):
724
"""Returns a generator of (name, attribute) pairs
725
"""
726
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
727
for cls in self.__class__.__mro__
728
for name, prop in
729
inspect.getmembers(cls, self._is_dbus_property))
730
1362
731
def _get_dbus_property(self, interface_name, property_name):
1363
732
"""Returns a bound method if one exists which is a D-Bus
1364
733
property with the specified name and interface.
1365
734
"""
1366
for cls in self.__class__.__mro__:
1367
for name, value in inspect.getmembers(
1368
cls, self._is_dbus_thing("property")):
735
for cls in self.__class__.__mro__:
736
for name, value in (inspect.getmembers
737
(cls, self._is_dbus_property)):
1369
738
if (value._dbus_name == property_name
1370
739
and value._dbus_interface == interface_name):
1371
740
return value.__get__(self)
1372
741
1373
742
# No such property
1374
raise DBusPropertyNotFound("{}:{}.{}".format(
1375
self.dbus_object_path, interface_name, property_name))
1376
1377
@classmethod
1378
def _get_all_interface_names(cls):
1379
"""Get a sequence of all interfaces supported by an object"""
1380
return (name for name in set(getattr(getattr(x, attr),
1381
"_dbus_interface", None)
1382
for x in (inspect.getmro(cls))
1383
for attr in dir(x))
1384
if name is not None)
1385
1386
@dbus.service.method(dbus.PROPERTIES_IFACE,
1387
in_signature="ss",
743
raise DBusPropertyNotFound(self.dbus_object_path + ":"
744
+ interface_name + "."
745
+ property_name)
746
747
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1388
748
out_signature="v")
1389
749
def Get(self, interface_name, property_name):
1390
750
"""Standard D-Bus property Get() method, see D-Bus standard.
1396
756
if not hasattr(value, "variant_level"):
1397
757
return value
1398
758
return type(value)(value, variant_level=value.variant_level+1)
1399
759
1400
760
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
1401
761
def Set(self, interface_name, property_name, value):
1402
762
"""Standard D-Bus property Set() method, see D-Bus standard.
1408
768
# The byte_arrays option is not supported yet on
1409
769
# signatures other than "ay".
1410
770
if prop._dbus_signature != "ay":
1411
raise ValueError("Byte arrays not supported for non-"
1412
"'ay' signature {!r}"
1413
.format(prop._dbus_signature))
1414
value = dbus.ByteArray(b''.join(chr(byte)
1415
for byte in value))
771
raise ValueError
772
value = dbus.ByteArray(''.join(unichr(byte)
773
for byte in value))
1416
774
prop(value)
1417
1418
@dbus.service.method(dbus.PROPERTIES_IFACE,
1419
in_signature="s",
775
776
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1420
777
out_signature="a{sv}")
1421
778
def GetAll(self, interface_name):
1422
779
"""Standard D-Bus property GetAll() method, see D-Bus
1423
780
standard.
1424
781
1425
782
Note: Will not include properties with access="write".
1426
783
"""
1427
784
properties = {}
1428
for name, prop in self._get_all_dbus_things("property"):
785
for name, prop in self._get_all_dbus_properties():
1429
786
if (interface_name
1430
787
and interface_name != prop._dbus_interface):
1431
788
# Interface non-empty but did not match
1437
794
if not hasattr(value, "variant_level"):
1438
795
properties[name] = value
1439
796
continue
1440
properties[name] = type(value)(
1441
value, variant_level=value.variant_level + 1)
797
properties[name] = type(value)(value, variant_level=
798
value.variant_level+1)
1442
799
return dbus.Dictionary(properties, signature="sv")
1443
1444
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1445
def PropertiesChanged(self, interface_name, changed_properties,
1446
invalidated_properties):
1447
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1448
standard.
1449
"""
1450
pass
1451
800
1452
801
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1453
802
out_signature="s",
1454
803
path_keyword='object_path',
1455
804
connection_keyword='connection')
1456
805
def Introspect(self, object_path, connection):
1457
"""Overloading of standard D-Bus method.
1458
1459
Inserts property tags and interface annotation tags.
806
"""Standard D-Bus method, overloaded to insert property tags.
1460
807
"""
1461
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1462
object_path,
1463
connection)
808
xmlstring = dbus.service.Object.Introspect(self, object_path,
809
connection)
1464
810
try:
1465
811
document = xml.dom.minidom.parseString(xmlstring)
1466
1467
812
def make_tag(document, name, prop):
1468
813
e = document.createElement("property")
1469
814
e.setAttribute("name", name)
1470
815
e.setAttribute("type", prop._dbus_signature)
1471
816
e.setAttribute("access", prop._dbus_access)
1472
817
return e
1473
1474
818
for if_tag in document.getElementsByTagName("interface"):
1475
# Add property tags
1476
819
for tag in (make_tag(document, name, prop)
1477
820
for name, prop
1478
in self._get_all_dbus_things("property")
821
in self._get_all_dbus_properties()
1479
822
if prop._dbus_interface
1480
823
== if_tag.getAttribute("name")):
1481
824
if_tag.appendChild(tag)
1482
# Add annotation tags for properties
1483
for tag in if_tag.getElementsByTagName("property"):
1484
annots = dict()
1485
for name, prop in self._get_all_dbus_things(
1486
"property"):
1487
if (name == tag.getAttribute("name")
1488
and prop._dbus_interface
1489
== if_tag.getAttribute("name")):
1490
annots.update(getattr(
1491
prop, "_dbus_annotations", {}))
1492
for name, value in annots.items():
1493
ann_tag = document.createElement(
1494
"annotation")
1495
ann_tag.setAttribute("name", name)
1496
ann_tag.setAttribute("value", value)
1497
tag.appendChild(ann_tag)
1498
825
# Add the names to the return values for the
1499
826
# "org.freedesktop.DBus.Properties" methods
1500
827
if (if_tag.getAttribute("name")
1515
842
except (AttributeError, xml.dom.DOMException,
1516
843
xml.parsers.expat.ExpatError) as error:
1517
844
logger.error("Failed to override Introspection method",
1518
exc_info=error)
1519
return xmlstring
1520
1521
1522
try:
1523
dbus.OBJECT_MANAGER_IFACE
1524
except AttributeError:
1525
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1526
1527
1528
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1529
"""A D-Bus object with an ObjectManager.
1530
1531
Classes inheriting from this exposes the standard
1532
GetManagedObjects call and the InterfacesAdded and
1533
InterfacesRemoved signals on the standard
1534
"org.freedesktop.DBus.ObjectManager" interface.
1535
1536
Note: No signals are sent automatically; they must be sent
1537
manually.
1538
"""
1539
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1540
out_signature="a{oa{sa{sv}}}")
1541
def GetManagedObjects(self):
1542
"""This function must be overridden"""
1543
raise NotImplementedError()
1544
1545
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1546
signature="oa{sa{sv}}")
1547
def InterfacesAdded(self, object_path, interfaces_and_properties):
1548
pass
1549
1550
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1551
def InterfacesRemoved(self, object_path, interfaces):
1552
pass
1553
1554
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1555
out_signature="s",
1556
path_keyword='object_path',
1557
connection_keyword='connection')
1558
def Introspect(self, object_path, connection):
1559
"""Overloading of standard D-Bus method.
1560
1561
Override return argument name of GetManagedObjects to be
1562
"objpath_interfaces_and_properties"
1563
"""
1564
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1565
object_path,
1566
connection)
1567
try:
1568
document = xml.dom.minidom.parseString(xmlstring)
1569
1570
for if_tag in document.getElementsByTagName("interface"):
1571
# Fix argument name for the GetManagedObjects method
1572
if (if_tag.getAttribute("name")
1573
== dbus.OBJECT_MANAGER_IFACE):
1574
for cn in if_tag.getElementsByTagName("method"):
1575
if (cn.getAttribute("name")
1576
== "GetManagedObjects"):
1577
for arg in cn.getElementsByTagName("arg"):
1578
if (arg.getAttribute("direction")
1579
== "out"):
1580
arg.setAttribute(
1581
"name",
1582
"objpath_interfaces"
1583
"_and_properties")
1584
xmlstring = document.toxml("utf-8")
1585
document.unlink()
1586
except (AttributeError, xml.dom.DOMException,
1587
xml.parsers.expat.ExpatError) as error:
1588
logger.error("Failed to override Introspection method",
1589
exc_info=error)
1590
return xmlstring
1591
1592
1593
def datetime_to_dbus(dt, variant_level=0):
845
error)
846
return xmlstring
847
848
849
def datetime_to_dbus (dt, variant_level=0):
1594
850
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1595
851
if dt is None:
1596
return dbus.String("", variant_level=variant_level)
1597
return dbus.String(dt.isoformat(), variant_level=variant_level)
1598
1599
1600
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1601
"""A class decorator; applied to a subclass of
1602
dbus.service.Object, it will add alternate D-Bus attributes with
1603
interface names according to the "alt_interface_names" mapping.
1604
Usage:
1605
1606
@alternate_dbus_interfaces({"org.example.Interface":
1607
"net.example.AlternateInterface"})
1608
class SampleDBusObject(dbus.service.Object):
1609
@dbus.service.method("org.example.Interface")
1610
def SampleDBusMethod():
1611
pass
1612
1613
The above "SampleDBusMethod" on "SampleDBusObject" will be
1614
reachable via two interfaces: "org.example.Interface" and
1615
"net.example.AlternateInterface", the latter of which will have
1616
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1617
"true", unless "deprecate" is passed with a False value.
1618
1619
This works for methods and signals, and also for D-Bus properties
1620
(from DBusObjectWithProperties) and interfaces (from the
1621
dbus_interface_annotations decorator).
852
return dbus.String("", variant_level = variant_level)
853
return dbus.String(dt.isoformat(),
854
variant_level=variant_level)
855
856
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
857
.__metaclass__):
858
"""Applied to an empty subclass of a D-Bus object, this metaclass
859
will add additional D-Bus attributes matching a certain pattern.
1622
860
"""
1623
1624
def wrapper(cls):
1625
for orig_interface_name, alt_interface_name in (
1626
alt_interface_names.items()):
1627
attr = {}
1628
interface_names = set()
1629
# Go though all attributes of the class
1630
for attrname, attribute in inspect.getmembers(cls):
861
def __new__(mcs, name, bases, attr):
862
# Go through all the base classes which could have D-Bus
863
# methods, signals, or properties in them
864
for base in (b for b in bases
865
if issubclass(b, dbus.service.Object)):
866
# Go though all attributes of the base class
867
for attrname, attribute in inspect.getmembers(base):
1631
868
# Ignore non-D-Bus attributes, and D-Bus attributes
1632
869
# with the wrong interface name
1633
870
if (not hasattr(attribute, "_dbus_interface")
1634
or not attribute._dbus_interface.startswith(
1635
orig_interface_name)):
871
or not attribute._dbus_interface
872
.startswith("se.recompile.Mandos")):
1636
873
continue
1637
874
# Create an alternate D-Bus interface name based on
1638
875
# the current name
1639
alt_interface = attribute._dbus_interface.replace(
1640
orig_interface_name, alt_interface_name)
1641
interface_names.add(alt_interface)
876
alt_interface = (attribute._dbus_interface
877
.replace("se.recompile.Mandos",
878
"se.bsnet.fukt.Mandos"))
1642
879
# Is this a D-Bus signal?
1643
880
if getattr(attribute, "_dbus_is_signal", False):
1644
# Extract the original non-method undecorated
1645
# function by black magic
1646
if sys.version_info.major == 2:
1647
nonmethod_func = (dict(
881
# Extract the original non-method function by
882
# black magic
883
nonmethod_func = (dict(
1648
884
zip(attribute.func_code.co_freevars,
1649
attribute.__closure__))
1650
["func"].cell_contents)
1651
else:
1652
nonmethod_func = (dict(
1653
zip(attribute.__code__.co_freevars,
1654
attribute.__closure__))
1655
["func"].cell_contents)
885
attribute.__closure__))["func"]
886
.cell_contents)
1656
887
# Create a new, but exactly alike, function
1657
888
# object, and decorate it to be a new D-Bus signal
1658
889
# with the alternate D-Bus interface name
1659
new_function = copy_function(nonmethod_func)
1660
new_function = (dbus.service.signal(
1661
alt_interface,
1662
attribute._dbus_signature)(new_function))
1663
# Copy annotations, if any
1664
try:
1665
new_function._dbus_annotations = dict(
1666
attribute._dbus_annotations)
1667
except AttributeError:
1668
pass
1669
890
new_function = (dbus.service.signal
891
(alt_interface,
892
attribute._dbus_signature)
893
(types.FunctionType(
894
nonmethod_func.func_code,
895
nonmethod_func.func_globals,
896
nonmethod_func.func_name,
897
nonmethod_func.func_defaults,
898
nonmethod_func.func_closure)))
1670
899
# Define a creator of a function to call both the
1671
# original and alternate functions, so both the
1672
# original and alternate signals gets sent when
1673
# the function is called
900
# old and new functions, so both the old and new
901
# signals gets sent when the function is called
1674
902
def fixscope(func1, func2):
1675
903
"""This function is a scope container to pass
1676
904
func1 and func2 to the "call_both" function
1677
905
outside of its arguments"""
1678
1679
@functools.wraps(func2)
1680
906
def call_both(*args, **kwargs):
1681
907
"""This function will emit two D-Bus
1682
908
signals by calling func1 and func2"""
1683
909
func1(*args, **kwargs)
1684
910
func2(*args, **kwargs)
1685
# Make wrapper function look like a D-Bus
1686
# signal
1687
for name, attr in inspect.getmembers(func2):
1688
if name.startswith("_dbus_"):
1689
setattr(call_both, name, attr)
1690
1691
911
return call_both
1692
912
# Create the "call_both" function and add it to
1693
913
# the class
1694
attr[attrname] = fixscope(attribute, new_function)
914
attr[attrname] = fixscope(attribute,
915
new_function)
1695
916
# Is this a D-Bus method?
1696
917
elif getattr(attribute, "_dbus_is_method", False):
1697
918
# Create a new, but exactly alike, function
1698
919
# object. Decorate it to be a new D-Bus method
1699
920
# with the alternate D-Bus interface name. Add it
1700
921
# to the class.
1701
attr[attrname] = (
1702
dbus.service.method(
1703
alt_interface,
1704
attribute._dbus_in_signature,
1705
attribute._dbus_out_signature)
1706
(copy_function(attribute)))
1707
# Copy annotations, if any
1708
try:
1709
attr[attrname]._dbus_annotations = dict(
1710
attribute._dbus_annotations)
1711
except AttributeError:
1712
pass
922
attr[attrname] = (dbus.service.method
923
(alt_interface,
924
attribute._dbus_in_signature,
925
attribute._dbus_out_signature)
926
(types.FunctionType
927
(attribute.func_code,
928
attribute.func_globals,
929
attribute.func_name,
930
attribute.func_defaults,
931
attribute.func_closure)))
1713
932
# Is this a D-Bus property?
1714
933
elif getattr(attribute, "_dbus_is_property", False):
1715
934
# Create a new, but exactly alike, function
1716
935
# object, and decorate it to be a new D-Bus
1717
936
# property with the alternate D-Bus interface
1718
937
# name. Add it to the class.
1719
attr[attrname] = (dbus_service_property(
1720
alt_interface, attribute._dbus_signature,
1721
attribute._dbus_access,
1722
attribute._dbus_get_args_options
1723
["byte_arrays"])
1724
(copy_function(attribute)))
1725
# Copy annotations, if any
1726
try:
1727
attr[attrname]._dbus_annotations = dict(
1728
attribute._dbus_annotations)
1729
except AttributeError:
1730
pass
1731
# Is this a D-Bus interface?
1732
elif getattr(attribute, "_dbus_is_interface", False):
1733
# Create a new, but exactly alike, function
1734
# object. Decorate it to be a new D-Bus interface
1735
# with the alternate D-Bus interface name. Add it
1736
# to the class.
1737
attr[attrname] = (
1738
dbus_interface_annotations(alt_interface)
1739
(copy_function(attribute)))
1740
if deprecate:
1741
# Deprecate all alternate interfaces
1742
iname = "_AlternateDBusNames_interface_annotation{}"
1743
for interface_name in interface_names:
1744
1745
@dbus_interface_annotations(interface_name)
1746
def func(self):
1747
return {"org.freedesktop.DBus.Deprecated":
1748
"true"}
1749
# Find an unused name
1750
for aname in (iname.format(i)
1751
for i in itertools.count()):
1752
if aname not in attr:
1753
attr[aname] = func
1754
break
1755
if interface_names:
1756
# Replace the class with a new subclass of it with
1757
# methods, signals, etc. as created above.
1758
if sys.version_info.major == 2:
1759
cls = type(b"{}Alternate".format(cls.__name__),
1760
(cls, ), attr)
1761
else:
1762
cls = type("{}Alternate".format(cls.__name__),
1763
(cls, ), attr)
1764
return cls
1765
1766
return wrapper
1767
1768
1769
@alternate_dbus_interfaces({"se.recompile.Mandos":
1770
"se.bsnet.fukt.Mandos"})
938
attr[attrname] = (dbus_service_property
939
(alt_interface,
940
attribute._dbus_signature,
941
attribute._dbus_access,
942
attribute
943
._dbus_get_args_options
944
["byte_arrays"])
945
(types.FunctionType
946
(attribute.func_code,
947
attribute.func_globals,
948
attribute.func_name,
949
attribute.func_defaults,
950
attribute.func_closure)))
951
return type.__new__(mcs, name, bases, attr)
952
1771
953
class ClientDBus(Client, DBusObjectWithProperties):
1772
954
"""A Client class using D-Bus
1773
955
1774
956
Attributes:
1775
957
dbus_object_path: dbus.ObjectPath
1776
958
bus: dbus.SystemBus()
1777
959
"""
1778
960
1779
961
runtime_expansions = (Client.runtime_expansions
1780
+ ("dbus_object_path", ))
1781
1782
_interface = "se.recompile.Mandos.Client"
1783
962
+ ("dbus_object_path",))
963
1784
964
# dbus.service.Object doesn't use super(), so we can't either.
1785
1786
def __init__(self, bus=None, *args, **kwargs):
965
966
def __init__(self, bus = None, *args, **kwargs):
1787
967
self.bus = bus
1788
968
Client.__init__(self, *args, **kwargs)
969
970
self._approvals_pending = 0
1789
971
# Only now, when this client is initialized, can it show up on
1790
972
# the D-Bus
1791
client_object_name = str(self.name).translate(
973
client_object_name = unicode(self.name).translate(
1792
974
{ord("."): ord("_"),
1793
975
ord("-"): ord("_")})
1794
self.dbus_object_path = dbus.ObjectPath(
1795
"/clients/" + client_object_name)
976
self.dbus_object_path = (dbus.ObjectPath
977
("/clients/" + client_object_name))
1796
978
DBusObjectWithProperties.__init__(self, self.bus,
1797
979
self.dbus_object_path)
1798
1799
def notifychangeproperty(transform_func, dbus_name,
1800
type_func=lambda x: x,
1801
variant_level=1,
1802
invalidate_only=False,
1803
_interface=_interface):
980
981
def notifychangeproperty(transform_func,
982
dbus_name, type_func=lambda x: x,
983
variant_level=1):
1804
984
""" Modify a variable so that it's a property which announces
1805
985
its changes to DBus.
1806
986
1811
991
to the D-Bus. Default: no transform
1812
992
variant_level: D-Bus variant level. Default: 1
1813
993
"""
1814
attrname = "_{}".format(dbus_name)
1815
994
attrname = "_{0}".format(dbus_name)
1816
995
def setter(self, value):
1817
996
if hasattr(self, "dbus_object_path"):
1818
997
if (not hasattr(self, attrname) or
1819
998
type_func(getattr(self, attrname, None))
1820
999
!= type_func(value)):
1821
if invalidate_only:
1822
self.PropertiesChanged(
1823
_interface, dbus.Dictionary(),
1824
dbus.Array((dbus_name, )))
1825
else:
1826
dbus_value = transform_func(
1827
type_func(value),
1828
variant_level=variant_level)
1829
self.PropertyChanged(dbus.String(dbus_name),
1830
dbus_value)
1831
self.PropertiesChanged(
1832
_interface,
1833
dbus.Dictionary({dbus.String(dbus_name):
1834
dbus_value}),
1835
dbus.Array())
1000
dbus_value = transform_func(type_func(value),
1001
variant_level
1002
=variant_level)
1003
self.PropertyChanged(dbus.String(dbus_name),
1004
dbus_value)
1836
1005
setattr(self, attrname, value)
1837
1006
1838
1007
return property(lambda self: getattr(self, attrname), setter)
1839
1008
1009
1840
1010
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1841
1011
approvals_pending = notifychangeproperty(dbus.Boolean,
1842
1012
"ApprovalPending",
1843
type_func=bool)
1013
type_func = bool)
1844
1014
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1845
1015
last_enabled = notifychangeproperty(datetime_to_dbus,
1846
1016
"LastEnabled")
1847
checker = notifychangeproperty(
1848
dbus.Boolean, "CheckerRunning",
1849
type_func=lambda checker: checker is not None)
1017
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1018
type_func = lambda checker:
1019
checker is not None)
1850
1020
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1851
1021
"LastCheckedOK")
1852
last_checker_status = notifychangeproperty(dbus.Int16,
1853
"LastCheckerStatus")
1854
1022
last_approval_request = notifychangeproperty(
1855
1023
datetime_to_dbus, "LastApprovalRequest")
1856
1024
approved_by_default = notifychangeproperty(dbus.Boolean,
1857
1025
"ApprovedByDefault")
1858
approval_delay = notifychangeproperty(
1859
dbus.UInt64, "ApprovalDelay",
1860
type_func=lambda td: td.total_seconds() * 1000)
1026
approval_delay = notifychangeproperty(dbus.UInt16,
1027
"ApprovalDelay",
1028
type_func =
1029
_timedelta_to_milliseconds)
1861
1030
approval_duration = notifychangeproperty(
1862
dbus.UInt64, "ApprovalDuration",
1863
type_func=lambda td: td.total_seconds() * 1000)
1031
dbus.UInt16, "ApprovalDuration",
1032
type_func = _timedelta_to_milliseconds)
1864
1033
host = notifychangeproperty(dbus.String, "Host")
1865
timeout = notifychangeproperty(
1866
dbus.UInt64, "Timeout",
1867
type_func=lambda td: td.total_seconds() * 1000)
1034
timeout = notifychangeproperty(dbus.UInt16, "Timeout",
1035
type_func =
1036
_timedelta_to_milliseconds)
1868
1037
extended_timeout = notifychangeproperty(
1869
dbus.UInt64, "ExtendedTimeout",
1870
type_func=lambda td: td.total_seconds() * 1000)
1871
interval = notifychangeproperty(
1872
dbus.UInt64, "Interval",
1873
type_func=lambda td: td.total_seconds() * 1000)
1038
dbus.UInt16, "ExtendedTimeout",
1039
type_func = _timedelta_to_milliseconds)
1040
interval = notifychangeproperty(dbus.UInt16,
1041
"Interval",
1042
type_func =
1043
_timedelta_to_milliseconds)
1874
1044
checker_command = notifychangeproperty(dbus.String, "Checker")
1875
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1876
invalidate_only=True)
1877
1045
1878
1046
del notifychangeproperty
1879
1047
1880
1048
def __del__(self, *args, **kwargs):
1881
1049
try:
1882
1050
self.remove_from_connection()
1885
1053
if hasattr(DBusObjectWithProperties, "__del__"):
1886
1054
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1887
1055
Client.__del__(self, *args, **kwargs)
1888
1889
def checker_callback(self, source, condition,
1890
connection, command, *args, **kwargs):
1891
ret = Client.checker_callback(self, source, condition,
1892
connection, command, *args,
1893
**kwargs)
1894
exitstatus = self.last_checker_status
1895
if exitstatus >= 0:
1056
1057
def checker_callback(self, pid, condition, command,
1058
*args, **kwargs):
1059
self.checker_callback_tag = None
1060
self.checker = None
1061
if os.WIFEXITED(condition):
1062
exitstatus = os.WEXITSTATUS(condition)
1896
1063
# Emit D-Bus signal
1897
1064
self.CheckerCompleted(dbus.Int16(exitstatus),
1898
# This is specific to GNU libC
1899
dbus.Int64(exitstatus << 8),
1065
dbus.Int64(condition),
1900
1066
dbus.String(command))
1901
1067
else:
1902
1068
# Emit D-Bus signal
1903
1069
self.CheckerCompleted(dbus.Int16(-1),
1904
dbus.Int64(
1905
# This is specific to GNU libC
1906
(exitstatus << 8)
1907
| self.last_checker_signal),
1070
dbus.Int64(condition),
1908
1071
dbus.String(command))
1909
return ret
1910
1072
1073
return Client.checker_callback(self, pid, condition, command,
1074
*args, **kwargs)
1075
1911
1076
def start_checker(self, *args, **kwargs):
1912
old_checker_pid = getattr(self.checker, "pid", None)
1077
old_checker = self.checker
1078
if self.checker is not None:
1079
old_checker_pid = self.checker.pid
1080
else:
1081
old_checker_pid = None
1913
1082
r = Client.start_checker(self, *args, **kwargs)
1914
1083
# Only if new checker process was started
1915
1084
if (self.checker is not None
1917
1086
# Emit D-Bus signal
1918
1087
self.CheckerStarted(self.current_checker_command)
1919
1088
return r
1920
1089
1921
1090
def _reset_approved(self):
1922
self.approved = None
1091
self._approved = None
1923
1092
return False
1924
1093
1925
1094
def approve(self, value=True):
1926
self.approved = value
1927
GLib.timeout_add(int(self.approval_duration.total_seconds()
1928
* 1000), self._reset_approved)
1929
1095
self.send_changedstate()
1930
1931
# D-Bus methods, signals & properties
1932
1933
# Interfaces
1934
1935
# Signals
1936
1096
self._approved = value
1097
gobject.timeout_add(_timedelta_to_milliseconds
1098
(self.approval_duration),
1099
self._reset_approved)
1100
1101
1102
## D-Bus methods, signals & properties
1103
_interface = "se.recompile.Mandos.Client"
1104
1105
## Signals
1106
1937
1107
# CheckerCompleted - signal
1938
1108
@dbus.service.signal(_interface, signature="nxs")
1939
1109
def CheckerCompleted(self, exitcode, waitstatus, command):
1940
1110
"D-Bus signal"
1941
1111
pass
1942
1112
1943
1113
# CheckerStarted - signal
1944
1114
@dbus.service.signal(_interface, signature="s")
1945
1115
def CheckerStarted(self, command):
1946
1116
"D-Bus signal"
1947
1117
pass
1948
1118
1949
1119
# PropertyChanged - signal
1950
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1951
1120
@dbus.service.signal(_interface, signature="sv")
1952
1121
def PropertyChanged(self, property, value):
1953
1122
"D-Bus signal"
1954
1123
pass
1955
1124
1956
1125
# GotSecret - signal
1957
1126
@dbus.service.signal(_interface)
1958
1127
def GotSecret(self):
1961
1130
server to mandos-client
1962
1131
"""
1963
1132
pass
1964
1133
1965
1134
# Rejected - signal
1966
1135
@dbus.service.signal(_interface, signature="s")
1967
1136
def Rejected(self, reason):
1968
1137
"D-Bus signal"
1969
1138
pass
1970
1139
1971
1140
# NeedApproval - signal
1972
1141
@dbus.service.signal(_interface, signature="tb")
1973
1142
def NeedApproval(self, timeout, default):
1974
1143
"D-Bus signal"
1975
1144
return self.need_approval()
1976
1977
# Methods
1978
1145
1146
# NeRwequest - signal
1147
@dbus.service.signal(_interface, signature="s")
1148
def NewRequest(self, ip):
1149
"""D-Bus signal
1150
Is sent after a client request a password.
1151
"""
1152
pass
1153
1154
## Methods
1155
1979
1156
# Approve - method
1980
1157
@dbus.service.method(_interface, in_signature="b")
1981
1158
def Approve(self, value):
1982
1159
self.approve(value)
1983
1160
1984
1161
# CheckedOK - method
1985
1162
@dbus.service.method(_interface)
1986
1163
def CheckedOK(self):
1987
1164
self.checked_ok()
1988
1165
1989
1166
# Enable - method
1990
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1991
1167
@dbus.service.method(_interface)
1992
1168
def Enable(self):
1993
1169
"D-Bus method"
1994
1170
self.enable()
1995
1171
1996
1172
# StartChecker - method
1997
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1998
1173
@dbus.service.method(_interface)
1999
1174
def StartChecker(self):
2000
1175
"D-Bus method"
2001
1176
self.start_checker()
2002
1177
2003
1178
# Disable - method
2004
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2005
1179
@dbus.service.method(_interface)
2006
1180
def Disable(self):
2007
1181
"D-Bus method"
2008
1182
self.disable()
2009
1183
2010
1184
# StopChecker - method
2011
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2012
1185
@dbus.service.method(_interface)
2013
1186
def StopChecker(self):
2014
1187
self.stop_checker()
2015
2016
# Properties
2017
1188
1189
## Properties
1190
2018
1191
# ApprovalPending - property
2019
1192
@dbus_service_property(_interface, signature="b", access="read")
2020
1193
def ApprovalPending_dbus_property(self):
2021
1194
return dbus.Boolean(bool(self.approvals_pending))
2022
1195
2023
1196
# ApprovedByDefault - property
2024
@dbus_service_property(_interface,
2025
signature="b",
1197
@dbus_service_property(_interface, signature="b",
2026
1198
access="readwrite")
2027
1199
def ApprovedByDefault_dbus_property(self, value=None):
2028
1200
if value is None: # get
2029
1201
return dbus.Boolean(self.approved_by_default)
2030
1202
self.approved_by_default = bool(value)
2031
1203
2032
1204
# ApprovalDelay - property
2033
@dbus_service_property(_interface,
2034
signature="t",
1205
@dbus_service_property(_interface, signature="t",
2035
1206
access="readwrite")
2036
1207
def ApprovalDelay_dbus_property(self, value=None):
2037
1208
if value is None: # get
2038
return dbus.UInt64(self.approval_delay.total_seconds()
2039
* 1000)
1209
return dbus.UInt64(self.approval_delay_milliseconds())
2040
1210
self.approval_delay = datetime.timedelta(0, 0, 0, value)
2041
1211
2042
1212
# ApprovalDuration - property
2043
@dbus_service_property(_interface,
2044
signature="t",
1213
@dbus_service_property(_interface, signature="t",
2045
1214
access="readwrite")
2046
1215
def ApprovalDuration_dbus_property(self, value=None):
2047
1216
if value is None: # get
2048
return dbus.UInt64(self.approval_duration.total_seconds()
2049
* 1000)
1217
return dbus.UInt64(_timedelta_to_milliseconds(
1218
self.approval_duration))
2050
1219
self.approval_duration = datetime.timedelta(0, 0, 0, value)
2051
1220
2052
1221
# Name - property
2053
@dbus_annotations(
2054
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2055
1222
@dbus_service_property(_interface, signature="s", access="read")
2056
1223
def Name_dbus_property(self):
2057
1224
return dbus.String(self.name)
2058
2059
# KeyID - property
2060
@dbus_annotations(
2061
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2062
@dbus_service_property(_interface, signature="s", access="read")
2063
def KeyID_dbus_property(self):
2064
return dbus.String(self.key_id)
2065
1225
2066
1226
# Fingerprint - property
2067
@dbus_annotations(
2068
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2069
1227
@dbus_service_property(_interface, signature="s", access="read")
2070
1228
def Fingerprint_dbus_property(self):
2071
1229
return dbus.String(self.fingerprint)
2072
1230
2073
1231
# Host - property
2074
@dbus_service_property(_interface,
2075
signature="s",
1232
@dbus_service_property(_interface, signature="s",
2076
1233
access="readwrite")
2077
1234
def Host_dbus_property(self, value=None):
2078
1235
if value is None: # get
2079
1236
return dbus.String(self.host)
2080
self.host = str(value)
2081
1237
self.host = value
1238
2082
1239
# Created - property
2083
@dbus_annotations(
2084
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2085
1240
@dbus_service_property(_interface, signature="s", access="read")
2086
1241
def Created_dbus_property(self):
2087
return datetime_to_dbus(self.created)
2088
1242
return dbus.String(datetime_to_dbus(self.created))
1243
2089
1244
# LastEnabled - property
2090
1245
@dbus_service_property(_interface, signature="s", access="read")
2091
1246
def LastEnabled_dbus_property(self):
2092
1247
return datetime_to_dbus(self.last_enabled)
2093
1248
2094
1249
# Enabled - property
2095
@dbus_service_property(_interface,
2096
signature="b",
1250
@dbus_service_property(_interface, signature="b",
2097
1251
access="readwrite")
2098
1252
def Enabled_dbus_property(self, value=None):
2099
1253
if value is None: # get
2102
1256
self.enable()
2103
1257
else:
2104
1258
self.disable()
2105
1259
2106
1260
# LastCheckedOK - property
2107
@dbus_service_property(_interface,
2108
signature="s",
1261
@dbus_service_property(_interface, signature="s",
2109
1262
access="readwrite")
2110
1263
def LastCheckedOK_dbus_property(self, value=None):
2111
1264
if value is not None:
2112
1265
self.checked_ok()
2113
1266
return
2114
1267
return datetime_to_dbus(self.last_checked_ok)
2115
2116
# LastCheckerStatus - property
2117
@dbus_service_property(_interface, signature="n", access="read")
2118
def LastCheckerStatus_dbus_property(self):
2119
return dbus.Int16(self.last_checker_status)
2120
1268
2121
1269
# Expires - property
2122
1270
@dbus_service_property(_interface, signature="s", access="read")
2123
1271
def Expires_dbus_property(self):
2124
1272
return datetime_to_dbus(self.expires)
2125
1273
2126
1274
# LastApprovalRequest - property
2127
1275
@dbus_service_property(_interface, signature="s", access="read")
2128
1276
def LastApprovalRequest_dbus_property(self):
2129
1277
return datetime_to_dbus(self.last_approval_request)
2130
1278
2131
1279
# Timeout - property
2132
@dbus_service_property(_interface,
2133
signature="t",
1280
@dbus_service_property(_interface, signature="t",
2134
1281
access="readwrite")
2135
1282
def Timeout_dbus_property(self, value=None):
2136
1283
if value is None: # get
2137
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2138
old_timeout = self.timeout
1284
return dbus.UInt64(self.timeout_milliseconds())
2139
1285
self.timeout = datetime.timedelta(0, 0, 0, value)
2140
# Reschedule disabling
2141
if self.enabled:
2142
now = datetime.datetime.utcnow()
2143
self.expires += self.timeout - old_timeout
2144
if self.expires <= now:
2145
# The timeout has passed
2146
self.disable()
2147
else:
2148
if (getattr(self, "disable_initiator_tag", None)
2149
is None):
2150
return
2151
GLib.source_remove(self.disable_initiator_tag)
2152
self.disable_initiator_tag = GLib.timeout_add(
2153
int((self.expires - now).total_seconds() * 1000),
2154
self.disable)
2155
1286
if getattr(self, "disable_initiator_tag", None) is None:
1287
return
1288
# Reschedule timeout
1289
gobject.source_remove(self.disable_initiator_tag)
1290
self.disable_initiator_tag = None
1291
self.expires = None
1292
time_to_die = _timedelta_to_milliseconds((self
1293
.last_checked_ok
1294
+ self.timeout)
1295
- datetime.datetime
1296
.utcnow())
1297
if time_to_die <= 0:
1298
# The timeout has passed
1299
self.disable()
1300
else:
1301
self.expires = (datetime.datetime.utcnow()
1302
+ datetime.timedelta(milliseconds =
1303
time_to_die))
1304
self.disable_initiator_tag = (gobject.timeout_add
1305
(time_to_die, self.disable))
1306
2156
1307
# ExtendedTimeout - property
2157
@dbus_service_property(_interface,
2158
signature="t",
1308
@dbus_service_property(_interface, signature="t",
2159
1309
access="readwrite")
2160
1310
def ExtendedTimeout_dbus_property(self, value=None):
2161
1311
if value is None: # get
2162
return dbus.UInt64(self.extended_timeout.total_seconds()
2163
* 1000)
1312
return dbus.UInt64(self.extended_timeout_milliseconds())
2164
1313
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2165
1314
2166
1315
# Interval - property
2167
@dbus_service_property(_interface,
2168
signature="t",
1316
@dbus_service_property(_interface, signature="t",
2169
1317
access="readwrite")
2170
1318
def Interval_dbus_property(self, value=None):
2171
1319
if value is None: # get
2172
return dbus.UInt64(self.interval.total_seconds() * 1000)
1320
return dbus.UInt64(self.interval_milliseconds())
2173
1321
self.interval = datetime.timedelta(0, 0, 0, value)
2174
1322
if getattr(self, "checker_initiator_tag", None) is None:
2175
1323
return
2176
if self.enabled:
2177
# Reschedule checker run
2178
GLib.source_remove(self.checker_initiator_tag)
2179
self.checker_initiator_tag = GLib.timeout_add(
2180
value, self.start_checker)
2181
self.start_checker() # Start one now, too
2182
1324
# Reschedule checker run
1325
gobject.source_remove(self.checker_initiator_tag)
1326
self.checker_initiator_tag = (gobject.timeout_add
1327
(value, self.start_checker))
1328
self.start_checker() # Start one now, too
1329
2183
1330
# Checker - property
2184
@dbus_service_property(_interface,
2185
signature="s",
1331
@dbus_service_property(_interface, signature="s",
2186
1332
access="readwrite")
2187
1333
def Checker_dbus_property(self, value=None):
2188
1334
if value is None: # get
2189
1335
return dbus.String(self.checker_command)
2190
self.checker_command = str(value)
2191
1336
self.checker_command = value
1337
2192
1338
# CheckerRunning - property
2193
@dbus_service_property(_interface,
2194
signature="b",
1339
@dbus_service_property(_interface, signature="b",
2195
1340
access="readwrite")
2196
1341
def CheckerRunning_dbus_property(self, value=None):
2197
1342
if value is None: # get
2200
1345
self.start_checker()
2201
1346
else:
2202
1347
self.stop_checker()
2203
1348
2204
1349
# ObjectPath - property
2205
@dbus_annotations(
2206
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2207
"org.freedesktop.DBus.Deprecated": "true"})
2208
1350
@dbus_service_property(_interface, signature="o", access="read")
2209
1351
def ObjectPath_dbus_property(self):
2210
return self.dbus_object_path # is already a dbus.ObjectPath
2211
1352
return self.dbus_object_path # is already a dbus.ObjectPath
1353
2212
1354
# Secret = property
2213
@dbus_annotations(
2214
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2215
"invalidates"})
2216
@dbus_service_property(_interface,
2217
signature="ay",
2218
access="write",
2219
byte_arrays=True)
1355
@dbus_service_property(_interface, signature="ay",
1356
access="write", byte_arrays=True)
2220
1357
def Secret_dbus_property(self, value):
2221
self.secret = bytes(value)
2222
1358
self.secret = str(value)
1359
2223
1360
del _interface
2224
1361
2225
1362
2226
class ProxyClient:
2227
def __init__(self, child_pipe, key_id, fpr, address):
1363
class ProxyClient(object):
1364
def __init__(self, child_pipe, fpr, address):
2228
1365
self._pipe = child_pipe
2229
self._pipe.send(('init', key_id, fpr, address))
1366
self._pipe.send(('init', fpr, address))
2230
1367
if not self._pipe.recv():
2231
raise KeyError(key_id or fpr)
2232
1368
raise KeyError()
1369
2233
1370
def __getattribute__(self, name):
2234
if name == '_pipe':
1371
if(name == '_pipe'):
2235
1372
return super(ProxyClient, self).__getattribute__(name)
2236
1373
self._pipe.send(('getattr', name))
2237
1374
data = self._pipe.recv()
2238
1375
if data[0] == 'data':
2239
1376
return data[1]
2240
1377
if data[0] == 'function':
2241
2242
1378
def func(*args, **kwargs):
2243
1379
self._pipe.send(('funcall', name, args, kwargs))
2244
1380
return self._pipe.recv()[1]
2245
2246
1381
return func
2247
1382
2248
1383
def __setattr__(self, name, value):
2249
if name == '_pipe':
1384
if(name == '_pipe'):
2250
1385
return super(ProxyClient, self).__setattr__(name, value)
2251
1386
self._pipe.send(('setattr', name, value))
2252
1387
1388
class ClientDBusTransitional(ClientDBus):
1389
__metaclass__ = AlternateDBusNamesMetaclass
2253
1390
2254
1391
class ClientHandler(socketserver.BaseRequestHandler, object):
2255
1392
"""A class to handle client connections.
2256
1393
2257
1394
Instantiated once for each connection to handle it.
2258
1395
Note: This will run in its own forked process."""
2259
1396
2260
1397
def handle(self):
2261
1398
with contextlib.closing(self.server.child_pipe) as child_pipe:
2262
1399
logger.info("TCP connection from: %s",
2263
str(self.client_address))
1400
unicode(self.client_address))
2264
1401
logger.debug("Pipe FD: %d",
2265
1402
self.server.child_pipe.fileno())
2266
2267
session = gnutls.ClientSession(self.request)
2268
2269
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2270
# "+AES-256-CBC", "+SHA1",
2271
# "+COMP-NULL", "+CTYPE-OPENPGP",
2272
# "+DHE-DSS"))
1403
1404
session = (gnutls.connection
1405
.ClientSession(self.request,
1406
gnutls.connection
1407
.X509Credentials()))
1408
1409
# Note: gnutls.connection.X509Credentials is really a
1410
# generic GnuTLS certificate credentials object so long as
1411
# no X.509 keys are added to it. Therefore, we can use it
1412
# here despite using OpenPGP certificates.
1413
1414
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1415
# "+AES-256-CBC", "+SHA1",
1416
# "+COMP-NULL", "+CTYPE-OPENPGP",
1417
# "+DHE-DSS"))
2273
1418
# Use a fallback default, since this MUST be set.
2274
1419
priority = self.server.gnutls_priority
2275
1420
if priority is None:
2276
1421
priority = "NORMAL"
2277
gnutls.priority_set_direct(session._c_object,
2278
priority.encode("utf-8"),
2279
None)
2280
1422
(gnutls.library.functions
1423
.gnutls_priority_set_direct(session._c_object,
1424
priority, None))
1425
2281
1426
# Start communication using the Mandos protocol
2282
1427
# Get protocol number
2283
1428
line = self.request.makefile().readline()
2284
1429
logger.debug("Protocol version: %r", line)
2285
1430
try:
2286
1431
if int(line.strip().split()[0]) > 1:
2287
raise RuntimeError(line)
1432
raise RuntimeError
2288
1433
except (ValueError, IndexError, RuntimeError) as error:
2289
1434
logger.error("Unknown protocol version: %s", error)
2290
1435
return
2291
1436
2292
1437
# Start GnuTLS connection
2293
1438
try:
2294
1439
session.handshake()
2295
except gnutls.Error as error:
1440
except gnutls.errors.GNUTLSError as error:
2296
1441
logger.warning("Handshake failed: %s", error)
2297
1442
# Do not run session.bye() here: the session is not
2298
1443
# established. Just abandon the request.
2299
1444
return
2300
1445
logger.debug("Handshake succeeded")
2301
1446
2302
1447
approval_required = False
2303
1448
try:
2304
if gnutls.has_rawpk:
2305
fpr = b""
2306
try:
2307
key_id = self.key_id(
2308
self.peer_certificate(session))
2309
except (TypeError, gnutls.Error) as error:
2310
logger.warning("Bad certificate: %s", error)
2311
return
2312
logger.debug("Key ID: %s", key_id)
2313
2314
else:
2315
key_id = b""
2316
try:
2317
fpr = self.fingerprint(
2318
self.peer_certificate(session))
2319
except (TypeError, gnutls.Error) as error:
2320
logger.warning("Bad certificate: %s", error)
2321
return
2322
logger.debug("Fingerprint: %s", fpr)
2323
2324
try:
2325
client = ProxyClient(child_pipe, key_id, fpr,
1449
try:
1450
fpr = self.fingerprint(self.peer_certificate
1451
(session))
1452
except (TypeError,
1453
gnutls.errors.GNUTLSError) as error:
1454
logger.warning("Bad certificate: %s", error)
1455
return
1456
logger.debug("Fingerprint: %s", fpr)
1457
if self.server.use_dbus:
1458
# Emit D-Bus signal
1459
client.NewRequest(str(self.client_address))
1460
1461
try:
1462
client = ProxyClient(child_pipe, fpr,
2326
1463
self.client_address)
2327
1464
except KeyError:
2328
1465
return
2329
1466
2330
1467
if client.approval_delay:
2331
1468
delay = client.approval_delay
2332
1469
client.approvals_pending += 1
2333
1470
approval_required = True
2334
1471
2335
1472
while True:
2336
1473
if not client.enabled:
2337
1474
logger.info("Client %s is disabled",
2338
client.name)
1475
client.name)
2339
1476
if self.server.use_dbus:
2340
1477
# Emit D-Bus signal
2341
1478
client.Rejected("Disabled")
2342
1479
return
2343
2344
if client.approved or not client.approval_delay:
2345
# We are approved or approval is disabled
1480
1481
if client._approved or not client.approval_delay:
1482
#We are approved or approval is disabled
2346
1483
break
2347
elif client.approved is None:
1484
elif client._approved is None:
2348
1485
logger.info("Client %s needs approval",
2349
1486
client.name)
2350
1487
if self.server.use_dbus:
2351
1488
# Emit D-Bus signal
2352
1489
client.NeedApproval(
2353
client.approval_delay.total_seconds()
2354
* 1000, client.approved_by_default)
1490
client.approval_delay_milliseconds(),
1491
client.approved_by_default)
2355
1492
else:
2356
1493
logger.warning("Client %s was not approved",
2357
1494
client.name)
2359
1496
# Emit D-Bus signal
2360
1497
client.Rejected("Denied")
2361
1498
return
2362
2363
# wait until timeout or approved
1499
1500
#wait until timeout or approved
2364
1501
time = datetime.datetime.now()
2365
1502
client.changedstate.acquire()
2366
client.changedstate.wait(delay.total_seconds())
1503
(client.changedstate.wait
1504
(float(client._timedelta_to_milliseconds(delay)
1505
/ 1000)))
2367
1506
client.changedstate.release()
2368
1507
time2 = datetime.datetime.now()
2369
1508
if (time2 - time) >= delay:
2379
1518
break
2380
1519
else:
2381
1520
delay -= time2 - time
2382
2383
try:
2384
session.send(client.secret)
2385
except gnutls.Error as error:
2386
logger.warning("gnutls send failed",
2387
exc_info=error)
2388
return
2389
1521
1522
sent_size = 0
1523
while sent_size < len(client.secret):
1524
try:
1525
sent = session.send(client.secret[sent_size:])
1526
except gnutls.errors.GNUTLSError as error:
1527
logger.warning("gnutls send failed")
1528
return
1529
logger.debug("Sent: %d, remaining: %d",
1530
sent, len(client.secret)
1531
- (sent_size + sent))
1532
sent_size += sent
1533
2390
1534
logger.info("Sending secret to %s", client.name)
2391
1535
# bump the timeout using extended_timeout
2392
client.bump_timeout(client.extended_timeout)
1536
client.checked_ok(client.extended_timeout)
2393
1537
if self.server.use_dbus:
2394
1538
# Emit D-Bus signal
2395
1539
client.GotSecret()
2396
1540
2397
1541
finally:
2398
1542
if approval_required:
2399
1543
client.approvals_pending -= 1
2400
1544
try:
2401
1545
session.bye()
2402
except gnutls.Error as error:
2403
logger.warning("GnuTLS bye failed",
2404
exc_info=error)
2405
1546
except gnutls.errors.GNUTLSError as error:
1547
logger.warning("GnuTLS bye failed")
1548
2406
1549
@staticmethod
2407
1550
def peer_certificate(session):
2408
"Return the peer's certificate as a bytestring"
2409
try:
2410
cert_type = gnutls.certificate_type_get2(session._c_object,
2411
gnutls.CTYPE_PEERS)
2412
except AttributeError:
2413
cert_type = gnutls.certificate_type_get(session._c_object)
2414
if gnutls.has_rawpk:
2415
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2416
else:
2417
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2418
# If not a valid certificate type...
2419
if cert_type not in valid_cert_types:
2420
logger.info("Cert type %r not in %r", cert_type,
2421
valid_cert_types)
2422
# ...return invalid data
2423
return b""
1551
"Return the peer's OpenPGP certificate as a bytestring"
1552
# If not an OpenPGP certificate...
1553
if (gnutls.library.functions
1554
.gnutls_certificate_type_get(session._c_object)
1555
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1556
# ...do the normal thing
1557
return session.peer_certificate
2424
1558
list_size = ctypes.c_uint(1)
2425
cert_list = (gnutls.certificate_get_peers
1559
cert_list = (gnutls.library.functions
1560
.gnutls_certificate_get_peers
2426
1561
(session._c_object, ctypes.byref(list_size)))
2427
1562
if not bool(cert_list) and list_size.value != 0:
2428
raise gnutls.Error("error getting peer certificate")
1563
raise gnutls.errors.GNUTLSError("error getting peer"
1564
" certificate")
2429
1565
if list_size.value == 0:
2430
1566
return None
2431
1567
cert = cert_list[0]
2432
1568
return ctypes.string_at(cert.data, cert.size)
2433
2434
@staticmethod
2435
def key_id(certificate):
2436
"Convert a certificate bytestring to a hexdigit key ID"
2437
# New GnuTLS "datum" with the public key
2438
datum = gnutls.datum_t(
2439
ctypes.cast(ctypes.c_char_p(certificate),
2440
ctypes.POINTER(ctypes.c_ubyte)),
2441
ctypes.c_uint(len(certificate)))
2442
# XXX all these need to be created in the gnutls "module"
2443
# New empty GnuTLS certificate
2444
pubkey = gnutls.pubkey_t()
2445
gnutls.pubkey_init(ctypes.byref(pubkey))
2446
# Import the raw public key into the certificate
2447
gnutls.pubkey_import(pubkey,
2448
ctypes.byref(datum),
2449
gnutls.X509_FMT_DER)
2450
# New buffer for the key ID
2451
buf = ctypes.create_string_buffer(32)
2452
buf_len = ctypes.c_size_t(len(buf))
2453
# Get the key ID from the raw public key into the buffer
2454
gnutls.pubkey_get_key_id(pubkey,
2455
gnutls.KEYID_USE_SHA256,
2456
ctypes.cast(ctypes.byref(buf),
2457
ctypes.POINTER(ctypes.c_ubyte)),
2458
ctypes.byref(buf_len))
2459
# Deinit the certificate
2460
gnutls.pubkey_deinit(pubkey)
2461
2462
# Convert the buffer to a Python bytestring
2463
key_id = ctypes.string_at(buf, buf_len.value)
2464
# Convert the bytestring to hexadecimal notation
2465
hex_key_id = binascii.hexlify(key_id).upper()
2466
return hex_key_id
2467
1569
2468
1570
@staticmethod
2469
1571
def fingerprint(openpgp):
2470
1572
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2471
1573
# New GnuTLS "datum" with the OpenPGP public key
2472
datum = gnutls.datum_t(
2473
ctypes.cast(ctypes.c_char_p(openpgp),
2474
ctypes.POINTER(ctypes.c_ubyte)),
2475
ctypes.c_uint(len(openpgp)))
1574
datum = (gnutls.library.types
1575
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1576
ctypes.POINTER
1577
(ctypes.c_ubyte)),
1578
ctypes.c_uint(len(openpgp))))
2476
1579
# New empty GnuTLS certificate
2477
crt = gnutls.openpgp_crt_t()
2478
gnutls.openpgp_crt_init(ctypes.byref(crt))
1580
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1581
(gnutls.library.functions
1582
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2479
1583
# Import the OpenPGP public key into the certificate
2480
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2481
gnutls.OPENPGP_FMT_RAW)
1584
(gnutls.library.functions
1585
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1586
gnutls.library.constants
1587
.GNUTLS_OPENPGP_FMT_RAW))
2482
1588
# Verify the self signature in the key
2483
1589
crtverify = ctypes.c_uint()
2484
gnutls.openpgp_crt_verify_self(crt, 0,
2485
ctypes.byref(crtverify))
1590
(gnutls.library.functions
1591
.gnutls_openpgp_crt_verify_self(crt, 0,
1592
ctypes.byref(crtverify)))
2486
1593
if crtverify.value != 0:
2487
gnutls.openpgp_crt_deinit(crt)
2488
raise gnutls.CertificateSecurityError(code
2489
=crtverify.value)
1594
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1595
raise (gnutls.errors.CertificateSecurityError
1596
("Verify failed"))
2490
1597
# New buffer for the fingerprint
2491
1598
buf = ctypes.create_string_buffer(20)
2492
1599
buf_len = ctypes.c_size_t()
2493
1600
# Get the fingerprint from the certificate into the buffer
2494
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2495
ctypes.byref(buf_len))
1601
(gnutls.library.functions
1602
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1603
ctypes.byref(buf_len)))
2496
1604
# Deinit the certificate
2497
gnutls.openpgp_crt_deinit(crt)
1605
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2498
1606
# Convert the buffer to a Python bytestring
2499
1607
fpr = ctypes.string_at(buf, buf_len.value)
2500
1608
# Convert the bytestring to hexadecimal notation
2501
hex_fpr = binascii.hexlify(fpr).upper()
1609
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
2502
1610
return hex_fpr
2503
1611
2504
1612
2505
class MultiprocessingMixIn:
1613
class MultiprocessingMixIn(object):
2506
1614
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2507
2508
1615
def sub_process_main(self, request, address):
2509
1616
try:
2510
1617
self.finish_request(request, address)
2511
except Exception:
1618
except:
2512
1619
self.handle_error(request, address)
2513
1620
self.close_request(request)
2514
1621
2515
1622
def process_request(self, request, address):
2516
1623
"""Start a new process to process the request."""
2517
proc = multiprocessing.Process(target=self.sub_process_main,
2518
args=(request, address))
1624
proc = multiprocessing.Process(target = self.sub_process_main,
1625
args = (request,
1626
address))
2519
1627
proc.start()
2520
1628
return proc
2521
1629
2522
1630
2523
class MultiprocessingMixInWithPipe(MultiprocessingMixIn):
1631
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2524
1632
""" adds a pipe to the MixIn """
2525
2526
1633
def process_request(self, request, client_address):
2527
1634
"""Overrides and wraps the original process_request().
2528
1635
2529
1636
This function creates a new pipe in self.pipe
2530
1637
"""
2531
1638
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2532
1639
2533
1640
proc = MultiprocessingMixIn.process_request(self, request,
2534
1641
client_address)
2535
1642
self.child_pipe.close()
2536
1643
self.add_pipe(parent_pipe, proc)
2537
1644
2538
1645
def add_pipe(self, parent_pipe, proc):
2539
1646
"""Dummy function; override as necessary"""
2540
raise NotImplementedError()
1647
raise NotImplementedError
2541
1648
2542
1649
2543
1650
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2544
socketserver.TCPServer):
1651
socketserver.TCPServer, object):
2545
1652
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
2546
1653
2547
1654
Attributes:
2548
1655
enabled: Boolean; whether this server is activated yet
2549
1656
interface: None or a network interface name (string)
2550
1657
use_ipv6: Boolean; to use IPv6 or not
2551
1658
"""
2552
2553
1659
def __init__(self, server_address, RequestHandlerClass,
2554
interface=None,
2555
use_ipv6=True,
2556
socketfd=None):
2557
"""If socketfd is set, use that file descriptor instead of
2558
creating a new one with socket.socket().
2559
"""
1660
interface=None, use_ipv6=True):
2560
1661
self.interface = interface
2561
1662
if use_ipv6:
2562
1663
self.address_family = socket.AF_INET6
2563
if socketfd is not None:
2564
# Save the file descriptor
2565
self.socketfd = socketfd
2566
# Save the original socket.socket() function
2567
self.socket_socket = socket.socket
2568
2569
# To implement --socket, we monkey patch socket.socket.
2570
#
2571
# (When socketserver.TCPServer is a new-style class, we
2572
# could make self.socket into a property instead of monkey
2573
# patching socket.socket.)
2574
#
2575
# Create a one-time-only replacement for socket.socket()
2576
@functools.wraps(socket.socket)
2577
def socket_wrapper(*args, **kwargs):
2578
# Restore original function so subsequent calls are
2579
# not affected.
2580
socket.socket = self.socket_socket
2581
del self.socket_socket
2582
# This time only, return a new socket object from the
2583
# saved file descriptor.
2584
return socket.fromfd(self.socketfd, *args, **kwargs)
2585
# Replace socket.socket() function with wrapper
2586
socket.socket = socket_wrapper
2587
# The socketserver.TCPServer.__init__ will call
2588
# socket.socket(), which might be our replacement,
2589
# socket_wrapper(), if socketfd was set.
2590
1664
socketserver.TCPServer.__init__(self, server_address,
2591
1665
RequestHandlerClass)
2592
2593
1666
def server_bind(self):
2594
1667
"""This overrides the normal server_bind() function
2595
1668
to bind to an interface if one was specified, and also NOT to
2596
1669
bind to an address or port if they were not specified."""
2597
global SO_BINDTODEVICE
2598
1670
if self.interface is not None:
2599
1671
if SO_BINDTODEVICE is None:
2600
# Fall back to a hard-coded value which seems to be
2601
# common enough.
2602
logger.warning("SO_BINDTODEVICE not found, trying 25")
2603
SO_BINDTODEVICE = 25
2604
try:
2605
self.socket.setsockopt(
2606
socket.SOL_SOCKET, SO_BINDTODEVICE,
2607
(self.interface + "\0").encode("utf-8"))
2608
except socket.error as error:
2609
if error.errno == errno.EPERM:
2610
logger.error("No permission to bind to"
2611
" interface %s", self.interface)
2612
elif error.errno == errno.ENOPROTOOPT:
2613
logger.error("SO_BINDTODEVICE not available;"
2614
" cannot bind to interface %s",
2615
self.interface)
2616
elif error.errno == errno.ENODEV:
2617
logger.error("Interface %s does not exist,"
2618
" cannot bind", self.interface)
2619
else:
2620
raise
1672
logger.error("SO_BINDTODEVICE does not exist;"
1673
" cannot bind to interface %s",
1674
self.interface)
1675
else:
1676
try:
1677
self.socket.setsockopt(socket.SOL_SOCKET,
1678
SO_BINDTODEVICE,
1679
str(self.interface
1680
+ '\0'))
1681
except socket.error as error:
1682
if error[0] == errno.EPERM:
1683
logger.error("No permission to"
1684
" bind to interface %s",
1685
self.interface)
1686
elif error[0] == errno.ENOPROTOOPT:
1687
logger.error("SO_BINDTODEVICE not available;"
1688
" cannot bind to interface %s",
1689
self.interface)
1690
else:
1691
raise
2621
1692
# Only bind(2) the socket if we really need to.
2622
1693
if self.server_address[0] or self.server_address[1]:
2623
if self.server_address[1]:
2624
self.allow_reuse_address = True
2625
1694
if not self.server_address[0]:
2626
1695
if self.address_family == socket.AF_INET6:
2627
any_address = "::" # in6addr_any
1696
any_address = "::" # in6addr_any
2628
1697
else:
2629
any_address = "0.0.0.0" # INADDR_ANY
1698
any_address = socket.INADDR_ANY
2630
1699
self.server_address = (any_address,
2631
1700
self.server_address[1])
2632
1701
elif not self.server_address[1]:
2633
self.server_address = (self.server_address[0], 0)
1702
self.server_address = (self.server_address[0],
1703
0)
2634
1704
# if self.interface:
2635
1705
# self.server_address = (self.server_address[0],
2636
1706
# 0, # port
2642
1712
2643
1713
class MandosServer(IPv6_TCPServer):
2644
1714
"""Mandos server.
2645
1715
2646
1716
Attributes:
2647
1717
clients: set of Client objects
2648
1718
gnutls_priority GnuTLS priority string
2649
1719
use_dbus: Boolean; to emit D-Bus signals or not
2650
2651
Assumes a GLib.MainLoop event loop.
1720
1721
Assumes a gobject.MainLoop event loop.
2652
1722
"""
2653
2654
1723
def __init__(self, server_address, RequestHandlerClass,
2655
interface=None,
2656
use_ipv6=True,
2657
clients=None,
2658
gnutls_priority=None,
2659
use_dbus=True,
2660
socketfd=None):
1724
interface=None, use_ipv6=True, clients=None,
1725
gnutls_priority=None, use_dbus=True):
2661
1726
self.enabled = False
2662
1727
self.clients = clients
2663
1728
if self.clients is None:
2666
1731
self.gnutls_priority = gnutls_priority
2667
1732
IPv6_TCPServer.__init__(self, server_address,
2668
1733
RequestHandlerClass,
2669
interface=interface,
2670
use_ipv6=use_ipv6,
2671
socketfd=socketfd)
2672
1734
interface = interface,
1735
use_ipv6 = use_ipv6)
2673
1736
def server_activate(self):
2674
1737
if self.enabled:
2675
1738
return socketserver.TCPServer.server_activate(self)
2676
1739
2677
1740
def enable(self):
2678
1741
self.enabled = True
2679
1742
2680
1743
def add_pipe(self, parent_pipe, proc):
2681
1744
# Call "handle_ipc" for both data and EOF events
2682
GLib.io_add_watch(
2683
parent_pipe.fileno(),
2684
GLib.IO_IN | GLib.IO_HUP,
2685
functools.partial(self.handle_ipc,
2686
parent_pipe=parent_pipe,
2687
proc=proc))
2688
2689
def handle_ipc(self, source, condition,
2690
parent_pipe=None,
2691
proc=None,
2692
client_object=None):
1745
gobject.io_add_watch(parent_pipe.fileno(),
1746
gobject.IO_IN | gobject.IO_HUP,
1747
functools.partial(self.handle_ipc,
1748
parent_pipe =
1749
parent_pipe,
1750
proc = proc))
1751
1752
def handle_ipc(self, source, condition, parent_pipe=None,
1753
proc = None, client_object=None):
1754
condition_names = {
1755
gobject.IO_IN: "IN", # There is data to read.
1756
gobject.IO_OUT: "OUT", # Data can be written (without
1757
# blocking).
1758
gobject.IO_PRI: "PRI", # There is urgent data to read.
1759
gobject.IO_ERR: "ERR", # Error condition.
1760
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1761
# broken, usually for pipes and
1762
# sockets).
1763
}
1764
conditions_string = ' | '.join(name
1765
for cond, name in
1766
condition_names.iteritems()
1767
if cond & condition)
2693
1768
# error, or the other end of multiprocessing.Pipe has closed
2694
if condition & (GLib.IO_ERR | GLib.IO_HUP):
1769
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2695
1770
# Wait for other process to exit
2696
1771
proc.join()
2697
1772
return False
2698
1773
2699
1774
# Read a request from the child
2700
1775
request = parent_pipe.recv()
2701
1776
command = request[0]
2702
1777
2703
1778
if command == 'init':
2704
key_id = request[1].decode("ascii")
2705
fpr = request[2].decode("ascii")
2706
address = request[3]
2707
2708
for c in self.clients.values():
2709
if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2710
continue
2711
if key_id and c.key_id == key_id:
2712
client = c
2713
break
2714
if fpr and c.fingerprint == fpr:
1779
fpr = request[1]
1780
address = request[2]
1781
1782
for c in self.clients.itervalues():
1783
if c.fingerprint == fpr:
2715
1784
client = c
2716
1785
break
2717
1786
else:
2718
logger.info("Client not found for key ID: %s, address"
2719
": %s", key_id or fpr, address)
1787
logger.info("Client not found for fingerprint: %s, ad"
1788
"dress: %s", fpr, address)
2720
1789
if self.use_dbus:
2721
1790
# Emit D-Bus signal
2722
mandos_dbus_service.ClientNotFound(key_id or fpr,
1791
mandos_dbus_service.ClientNotFound(fpr,
2723
1792
address[0])
2724
1793
parent_pipe.send(False)
2725
1794
return False
2726
2727
GLib.io_add_watch(
2728
parent_pipe.fileno(),
2729
GLib.IO_IN | GLib.IO_HUP,
2730
functools.partial(self.handle_ipc,
2731
parent_pipe=parent_pipe,
2732
proc=proc,
2733
client_object=client))
1795
1796
gobject.io_add_watch(parent_pipe.fileno(),
1797
gobject.IO_IN | gobject.IO_HUP,
1798
functools.partial(self.handle_ipc,
1799
parent_pipe =
1800
parent_pipe,
1801
proc = proc,
1802
client_object =
1803
client))
2734
1804
parent_pipe.send(True)
2735
1805
# remove the old hook in favor of the new above hook on
2736
1806
# same fileno
2739
1809
funcname = request[1]
2740
1810
args = request[2]
2741
1811
kwargs = request[3]
2742
1812
2743
1813
parent_pipe.send(('data', getattr(client_object,
2744
1814
funcname)(*args,
2745
**kwargs)))
2746
1815
**kwargs)))
1816
2747
1817
if command == 'getattr':
2748
1818
attrname = request[1]
2749
if isinstance(client_object.__getattribute__(attrname),
2750
collections.Callable):
2751
parent_pipe.send(('function', ))
1819
if callable(client_object.__getattribute__(attrname)):
1820
parent_pipe.send(('function',))
2752
1821
else:
2753
parent_pipe.send((
2754
'data', client_object.__getattribute__(attrname)))
2755
1822
parent_pipe.send(('data', client_object
1823
.__getattribute__(attrname)))
1824
2756
1825
if command == 'setattr':
2757
1826
attrname = request[1]
2758
1827
value = request[2]
2759
1828
setattr(client_object, attrname, value)
2760
1829
2761
1830
return True
2762
1831
2763
1832
2764
def rfc3339_duration_to_delta(duration):
2765
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2766
2767
>>> rfc3339_duration_to_delta("P7D")
2768
datetime.timedelta(7)
2769
>>> rfc3339_duration_to_delta("PT60S")
2770
datetime.timedelta(0, 60)
2771
>>> rfc3339_duration_to_delta("PT60M")
2772
datetime.timedelta(0, 3600)
2773
>>> rfc3339_duration_to_delta("PT24H")
2774
datetime.timedelta(1)
2775
>>> rfc3339_duration_to_delta("P1W")
2776
datetime.timedelta(7)
2777
>>> rfc3339_duration_to_delta("PT5M30S")
2778
datetime.timedelta(0, 330)
2779
>>> rfc3339_duration_to_delta("P1DT3M20S")
2780
datetime.timedelta(1, 200)
2781
"""
2782
2783
# Parsing an RFC 3339 duration with regular expressions is not
2784
# possible - there would have to be multiple places for the same
2785
# values, like seconds. The current code, while more esoteric, is
2786
# cleaner without depending on a parsing library. If Python had a
2787
# built-in library for parsing we would use it, but we'd like to
2788
# avoid excessive use of external libraries.
2789
2790
# New type for defining tokens, syntax, and semantics all-in-one
2791
Token = collections.namedtuple("Token", (
2792
"regexp", # To match token; if "value" is not None, must have
2793
# a "group" containing digits
2794
"value", # datetime.timedelta or None
2795
"followers")) # Tokens valid after this token
2796
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2797
# the "duration" ABNF definition in RFC 3339, Appendix A.
2798
token_end = Token(re.compile(r"$"), None, frozenset())
2799
token_second = Token(re.compile(r"(\d+)S"),
2800
datetime.timedelta(seconds=1),
2801
frozenset((token_end, )))
2802
token_minute = Token(re.compile(r"(\d+)M"),
2803
datetime.timedelta(minutes=1),
2804
frozenset((token_second, token_end)))
2805
token_hour = Token(re.compile(r"(\d+)H"),
2806
datetime.timedelta(hours=1),
2807
frozenset((token_minute, token_end)))
2808
token_time = Token(re.compile(r"T"),
2809
None,
2810
frozenset((token_hour, token_minute,
2811
token_second)))
2812
token_day = Token(re.compile(r"(\d+)D"),
2813
datetime.timedelta(days=1),
2814
frozenset((token_time, token_end)))
2815
token_month = Token(re.compile(r"(\d+)M"),
2816
datetime.timedelta(weeks=4),
2817
frozenset((token_day, token_end)))
2818
token_year = Token(re.compile(r"(\d+)Y"),
2819
datetime.timedelta(weeks=52),
2820
frozenset((token_month, token_end)))
2821
token_week = Token(re.compile(r"(\d+)W"),
2822
datetime.timedelta(weeks=1),
2823
frozenset((token_end, )))
2824
token_duration = Token(re.compile(r"P"), None,
2825
frozenset((token_year, token_month,
2826
token_day, token_time,
2827
token_week)))
2828
# Define starting values:
2829
# Value so far
2830
value = datetime.timedelta()
2831
found_token = None
2832
# Following valid tokens
2833
followers = frozenset((token_duration, ))
2834
# String left to parse
2835
s = duration
2836
# Loop until end token is found
2837
while found_token is not token_end:
2838
# Search for any currently valid tokens
2839
for token in followers:
2840
match = token.regexp.match(s)
2841
if match is not None:
2842
# Token found
2843
if token.value is not None:
2844
# Value found, parse digits
2845
factor = int(match.group(1), 10)
2846
# Add to value so far
2847
value += factor * token.value
2848
# Strip token from string
2849
s = token.regexp.sub("", s, 1)
2850
# Go to found token
2851
found_token = token
2852
# Set valid next tokens
2853
followers = found_token.followers
2854
break
2855
else:
2856
# No currently valid tokens were found
2857
raise ValueError("Invalid RFC 3339 duration: {!r}"
2858
.format(duration))
2859
# End token found
2860
return value
2861
2862
2863
1833
def string_to_delta(interval):
2864
1834
"""Parse a string and return a datetime.timedelta
2865
1835
2866
1836
>>> string_to_delta('7d')
2867
1837
datetime.timedelta(7)
2868
1838
>>> string_to_delta('60s')
2876
1846
>>> string_to_delta('5m 30s')
2877
1847
datetime.timedelta(0, 330)
2878
1848
"""
2879
2880
try:
2881
return rfc3339_duration_to_delta(interval)
2882
except ValueError:
2883
pass
2884
2885
1849
timevalue = datetime.timedelta(0)
2886
1850
for s in interval.split():
2887
1851
try:
2888
suffix = s[-1]
1852
suffix = unicode(s[-1])
2889
1853
value = int(s[:-1])
2890
1854
if suffix == "d":
2891
1855
delta = datetime.timedelta(value)
2898
1862
elif suffix == "w":
2899
1863
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2900
1864
else:
2901
raise ValueError("Unknown suffix {!r}".format(suffix))
2902
except IndexError as e:
1865
raise ValueError("Unknown suffix %r" % suffix)
1866
except (ValueError, IndexError) as e:
2903
1867
raise ValueError(*(e.args))
2904
1868
timevalue += delta
2905
1869
return timevalue
2906
1870
2907
1871
2908
def daemon(nochdir=False, noclose=False):
1872
def daemon(nochdir = False, noclose = False):
2909
1873
"""See daemon(3). Standard BSD Unix function.
2910
1874
2911
1875
This should really exist as os.daemon, but it doesn't (yet)."""
2912
1876
if os.fork():
2913
1877
sys.exit()
2918
1882
sys.exit()
2919
1883
if not noclose:
2920
1884
# Close all standard open file descriptors
2921
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1885
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2922
1886
if not stat.S_ISCHR(os.fstat(null).st_mode):
2923
1887
raise OSError(errno.ENODEV,
2924
"{} not a character device"
2925
.format(os.devnull))
1888
"%s not a character device"
1889
% os.path.devnull)
2926
1890
os.dup2(null, sys.stdin.fileno())
2927
1891
os.dup2(null, sys.stdout.fileno())
2928
1892
os.dup2(null, sys.stderr.fileno())
2931
1895
2932
1896
2933
1897
def main():
2934
1898
2935
1899
##################################################################
2936
1900
# Parsing of options, both command line and config file
2937
1901
2938
1902
parser = argparse.ArgumentParser()
2939
1903
parser.add_argument("-v", "--version", action="version",
2940
version="%(prog)s {}".format(version),
1904
version = "%%(prog)s %s" % version,
2941
1905
help="show version number and exit")
2942
1906
parser.add_argument("-i", "--interface", metavar="IF",
2943
1907
help="Bind to interface IF")
2949
1913
help="Run self-test")
2950
1914
parser.add_argument("--debug", action="store_true",
2951
1915
help="Debug mode; run in foreground and log"
2952
" to terminal", default=None)
1916
" to terminal")
2953
1917
parser.add_argument("--debuglevel", metavar="LEVEL",
2954
1918
help="Debug level for stdout output")
2955
1919
parser.add_argument("--priority", help="GnuTLS"
2962
1926
" files")
2963
1927
parser.add_argument("--no-dbus", action="store_false",
2964
1928
dest="use_dbus", help="Do not provide D-Bus"
2965
" system bus interface", default=None)
1929
" system bus interface")
2966
1930
parser.add_argument("--no-ipv6", action="store_false",
2967
dest="use_ipv6", help="Do not use IPv6",
2968
default=None)
1931
dest="use_ipv6", help="Do not use IPv6")
2969
1932
parser.add_argument("--no-restore", action="store_false",
2970
dest="restore", help="Do not restore stored"
2971
" state", default=None)
2972
parser.add_argument("--socket", type=int,
2973
help="Specify a file descriptor to a network"
2974
" socket to use instead of creating one")
2975
parser.add_argument("--statedir", metavar="DIR",
2976
help="Directory to save/restore state in")
2977
parser.add_argument("--foreground", action="store_true",
2978
help="Run in foreground", default=None)
2979
parser.add_argument("--no-zeroconf", action="store_false",
2980
dest="zeroconf", help="Do not use Zeroconf",
2981
default=None)
1933
dest="restore", help="Do not restore stored state",
1934
default=True)
2982
1935
2983
1936
options = parser.parse_args()
2984
1937
1938
if options.check:
1939
import doctest
1940
doctest.testmod()
1941
sys.exit()
1942
2985
1943
# Default values for config file for server-global settings
2986
if gnutls.has_rawpk:
2987
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
2988
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
2989
else:
2990
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2991
":+SIGN-DSA-SHA256")
2992
server_defaults = {"interface": "",
2993
"address": "",
2994
"port": "",
2995
"debug": "False",
2996
"priority": priority,
2997
"servicename": "Mandos",
2998
"use_dbus": "True",
2999
"use_ipv6": "True",
3000
"debuglevel": "",
3001
"restore": "True",
3002
"socket": "",
3003
"statedir": "/var/lib/mandos",
3004
"foreground": "False",
3005
"zeroconf": "True",
3006
}
3007
del priority
3008
1944
server_defaults = { "interface": "",
1945
"address": "",
1946
"port": "",
1947
"debug": "False",
1948
"priority":
1949
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1950
"servicename": "Mandos",
1951
"use_dbus": "True",
1952
"use_ipv6": "True",
1953
"debuglevel": "",
1954
}
1955
3009
1956
# Parse config file for server-global settings
3010
server_config = configparser.ConfigParser(server_defaults)
1957
server_config = configparser.SafeConfigParser(server_defaults)
3011
1958
del server_defaults
3012
server_config.read(os.path.join(options.configdir, "mandos.conf"))
3013
# Convert the ConfigParser object to a dict
1959
server_config.read(os.path.join(options.configdir,
1960
"mandos.conf"))
1961
# Convert the SafeConfigParser object to a dict
3014
1962
server_settings = server_config.defaults()
3015
1963
# Use the appropriate methods on the non-string config options
3016
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3017
"foreground", "zeroconf"):
1964
for option in ("debug", "use_dbus", "use_ipv6"):
3018
1965
server_settings[option] = server_config.getboolean("DEFAULT",
3019
1966
option)
3020
1967
if server_settings["port"]:
3021
1968
server_settings["port"] = server_config.getint("DEFAULT",
3022
1969
"port")
3023
if server_settings["socket"]:
3024
server_settings["socket"] = server_config.getint("DEFAULT",
3025
"socket")
3026
# Later, stdin will, and stdout and stderr might, be dup'ed
3027
# over with an opened os.devnull. But we don't want this to
3028
# happen with a supplied network socket.
3029
if 0 <= server_settings["socket"] <= 2:
3030
server_settings["socket"] = os.dup(server_settings
3031
["socket"])
3032
1970
del server_config
3033
1971
3034
1972
# Override the settings from the config file with command line
3035
1973
# options, if set.
3036
1974
for option in ("interface", "address", "port", "debug",
3037
"priority", "servicename", "configdir", "use_dbus",
3038
"use_ipv6", "debuglevel", "restore", "statedir",
3039
"socket", "foreground", "zeroconf"):
1975
"priority", "servicename", "configdir",
1976
"use_dbus", "use_ipv6", "debuglevel", "restore"):
3040
1977
value = getattr(options, option)
3041
1978
if value is not None:
3042
1979
server_settings[option] = value
3043
1980
del options
3044
1981
# Force all strings to be unicode
3045
1982
for option in server_settings.keys():
3046
if isinstance(server_settings[option], bytes):
3047
server_settings[option] = (server_settings[option]
3048
.decode("utf-8"))
3049
# Force all boolean options to be boolean
3050
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3051
"foreground", "zeroconf"):
3052
server_settings[option] = bool(server_settings[option])
3053
# Debug implies foreground
3054
if server_settings["debug"]:
3055
server_settings["foreground"] = True
1983
if type(server_settings[option]) is str:
1984
server_settings[option] = unicode(server_settings[option])
3056
1985
# Now we have our good server settings in "server_settings"
3057
1986
3058
1987
##################################################################
3059
3060
if (not server_settings["zeroconf"]
3061
and not (server_settings["port"]
3062
or server_settings["socket"] != "")):
3063
parser.error("Needs port or socket to work without Zeroconf")
3064
1988
3065
1989
# For convenience
3066
1990
debug = server_settings["debug"]
3067
1991
debuglevel = server_settings["debuglevel"]
3068
1992
use_dbus = server_settings["use_dbus"]
3069
1993
use_ipv6 = server_settings["use_ipv6"]
3070
stored_state_path = os.path.join(server_settings["statedir"],
3071
stored_state_file)
3072
foreground = server_settings["foreground"]
3073
zeroconf = server_settings["zeroconf"]
3074
1994
3075
1995
if debug:
3076
initlogger(debug, logging.DEBUG)
1996
initlogger(logging.DEBUG)
3077
1997
else:
3078
1998
if not debuglevel:
3079
initlogger(debug)
1999
initlogger()
3080
2000
else:
3081
2001
level = getattr(logging, debuglevel.upper())
3082
initlogger(debug, level)
3083
2002
initlogger(level)
2003
3084
2004
if server_settings["servicename"] != "Mandos":
3085
syslogger.setFormatter(
3086
logging.Formatter('Mandos ({}) [%(process)d]:'
3087
' %(levelname)s: %(message)s'.format(
3088
server_settings["servicename"])))
3089
2005
syslogger.setFormatter(logging.Formatter
2006
('Mandos (%s) [%%(process)d]:'
2007
' %%(levelname)s: %%(message)s'
2008
% server_settings["servicename"]))
2009
3090
2010
# Parse config file with clients
3091
client_config = configparser.ConfigParser(Client.client_defaults)
2011
client_defaults = { "timeout": "5m",
2012
"extended_timeout": "15m",
2013
"interval": "2m",
2014
"checker": "fping -q -- %%(host)s",
2015
"host": "",
2016
"approval_delay": "0s",
2017
"approval_duration": "1s",
2018
}
2019
client_config = configparser.SafeConfigParser(client_defaults)
3092
2020
client_config.read(os.path.join(server_settings["configdir"],
3093
2021
"clients.conf"))
3094
2022
3095
2023
global mandos_dbus_service
3096
2024
mandos_dbus_service = None
3097
3098
socketfd = None
3099
if server_settings["socket"] != "":
3100
socketfd = server_settings["socket"]
3101
tcp_server = MandosServer(
3102
(server_settings["address"], server_settings["port"]),
3103
ClientHandler,
3104
interface=(server_settings["interface"] or None),
3105
use_ipv6=use_ipv6,
3106
gnutls_priority=server_settings["priority"],
3107
use_dbus=use_dbus,
3108
socketfd=socketfd)
3109
if not foreground:
3110
pidfilename = "/run/mandos.pid"
3111
if not os.path.isdir("/run/."):
3112
pidfilename = "/var/run/mandos.pid"
3113
pidfile = None
3114
try:
3115
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3116
except IOError as e:
3117
logger.error("Could not open file %r", pidfilename,
3118
exc_info=e)
3119
3120
for name, group in (("_mandos", "_mandos"),
3121
("mandos", "mandos"),
3122
("nobody", "nogroup")):
3123
try:
3124
uid = pwd.getpwnam(name).pw_uid
3125
gid = pwd.getpwnam(group).pw_gid
3126
break
2025
2026
tcp_server = MandosServer((server_settings["address"],
2027
server_settings["port"]),
2028
ClientHandler,
2029
interface=(server_settings["interface"]
2030
or None),
2031
use_ipv6=use_ipv6,
2032
gnutls_priority=
2033
server_settings["priority"],
2034
use_dbus=use_dbus)
2035
if not debug:
2036
pidfilename = "/var/run/mandos.pid"
2037
try:
2038
pidfile = open(pidfilename, "w")
2039
except IOError:
2040
logger.error("Could not open file %r", pidfilename)
2041
2042
try:
2043
uid = pwd.getpwnam("_mandos").pw_uid
2044
gid = pwd.getpwnam("_mandos").pw_gid
2045
except KeyError:
2046
try:
2047
uid = pwd.getpwnam("mandos").pw_uid
2048
gid = pwd.getpwnam("mandos").pw_gid
3127
2049
except KeyError:
3128
continue
3129
else:
3130
uid = 65534
3131
gid = 65534
2050
try:
2051
uid = pwd.getpwnam("nobody").pw_uid
2052
gid = pwd.getpwnam("nobody").pw_gid
2053
except KeyError:
2054
uid = 65534
2055
gid = 65534
3132
2056
try:
3133
2057
os.setgid(gid)
3134
2058
os.setuid(uid)
3135
if debug:
3136
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3137
gid))
3138
2059
except OSError as error:
3139
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3140
.format(uid, gid, os.strerror(error.errno)))
3141
if error.errno != errno.EPERM:
3142
raise
3143
2060
if error[0] != errno.EPERM:
2061
raise error
2062
3144
2063
if debug:
3145
2064
# Enable all possible GnuTLS debugging
3146
2065
3147
2066
# "Use a log level over 10 to enable all debugging options."
3148
2067
# - GnuTLS manual
3149
gnutls.global_set_log_level(11)
3150
3151
@gnutls.log_func
2068
gnutls.library.functions.gnutls_global_set_log_level(11)
2069
2070
@gnutls.library.types.gnutls_log_func
3152
2071
def debug_gnutls(level, string):
3153
2072
logger.debug("GnuTLS: %s", string[:-1])
3154
3155
gnutls.global_set_log_function(debug_gnutls)
3156
2073
2074
(gnutls.library.functions
2075
.gnutls_global_set_log_function(debug_gnutls))
2076
3157
2077
# Redirect stdin so all checkers get /dev/null
3158
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2078
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3159
2079
os.dup2(null, sys.stdin.fileno())
3160
2080
if null > 2:
3161
2081
os.close(null)
3162
2082
else:
2083
# No console logging
2084
logger.removeHandler(console)
2085
3163
2086
# Need to fork before connecting to D-Bus
3164
if not foreground:
2087
if not debug:
3165
2088
# Close all input and output, do double fork, etc.
3166
2089
daemon()
3167
3168
if gi.version_info < (3, 10, 2):
3169
# multiprocessing will use threads, so before we use GLib we
3170
# need to inform GLib that threads will be used.
3171
GLib.threads_init()
3172
2090
3173
2091
global main_loop
3174
2092
# From the Avahi example code
3175
DBusGMainLoop(set_as_default=True)
3176
main_loop = GLib.MainLoop()
2093
DBusGMainLoop(set_as_default=True )
2094
main_loop = gobject.MainLoop()
3177
2095
bus = dbus.SystemBus()
3178
2096
# End of Avahi example code
3179
2097
if use_dbus:
3180
2098
try:
3181
2099
bus_name = dbus.service.BusName("se.recompile.Mandos",
3182
bus,
3183
do_not_queue=True)
3184
old_bus_name = dbus.service.BusName(
3185
"se.bsnet.fukt.Mandos", bus,
3186
do_not_queue=True)
3187
except dbus.exceptions.DBusException as e:
3188
logger.error("Disabling D-Bus:", exc_info=e)
2100
bus, do_not_queue=True)
2101
old_bus_name = (dbus.service.BusName
2102
("se.bsnet.fukt.Mandos", bus,
2103
do_not_queue=True))
2104
except dbus.exceptions.NameExistsException as e:
2105
logger.error(unicode(e) + ", disabling D-Bus")
3189
2106
use_dbus = False
3190
2107
server_settings["use_dbus"] = False
3191
2108
tcp_server.use_dbus = False
3192
if zeroconf:
3193
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3194
service = AvahiServiceToSyslog(
3195
name=server_settings["servicename"],
3196
servicetype="_mandos._tcp",
3197
protocol=protocol,
3198
bus=bus)
3199
if server_settings["interface"]:
3200
service.interface = if_nametoindex(
3201
server_settings["interface"].encode("utf-8"))
3202
2109
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2110
service = AvahiServiceToSyslog(name =
2111
server_settings["servicename"],
2112
servicetype = "_mandos._tcp",
2113
protocol = protocol, bus = bus)
2114
if server_settings["interface"]:
2115
service.interface = (if_nametoindex
2116
(str(server_settings["interface"])))
2117
3203
2118
global multiprocessing_manager
3204
2119
multiprocessing_manager = multiprocessing.Manager()
3205
2120
3206
2121
client_class = Client
3207
2122
if use_dbus:
3208
client_class = functools.partial(ClientDBus, bus=bus)
3209
3210
client_settings = Client.config_parser(client_config)
2123
client_class = functools.partial(ClientDBusTransitional,
2124
bus = bus)
2125
2126
special_settings = {
2127
# Some settings need to be accessd by special methods;
2128
# booleans need .getboolean(), etc. Here is a list of them:
2129
"approved_by_default":
2130
lambda section:
2131
client_config.getboolean(section, "approved_by_default"),
2132
}
2133
# Construct a new dict of client settings of this form:
2134
# { client_name: {setting_name: value, ...}, ...}
2135
# with exceptions for any special settings as defined above
2136
client_settings = dict((clientname,
2137
dict((setting,
2138
(value if setting not in special_settings
2139
else special_settings[setting](clientname)))
2140
for setting, value in client_config.items(clientname)))
2141
for clientname in client_config.sections())
2142
3211
2143
old_client_settings = {}
3212
clients_data = {}
3213
3214
# This is used to redirect stdout and stderr for checker processes
3215
global wnull
3216
wnull = open(os.devnull, "w") # A writable /dev/null
3217
# Only used if server is running in foreground but not in debug
3218
# mode
3219
if debug or not foreground:
3220
wnull.close()
3221
3222
# Get client data and settings from last running state.
2144
clients_data = []
2145
2146
# Get client data and settings from last running state.
3223
2147
if server_settings["restore"]:
3224
2148
try:
3225
2149
with open(stored_state_path, "rb") as stored_state:
3226
if sys.version_info.major == 2:
3227
clients_data, old_client_settings = pickle.load(
3228
stored_state)
3229
else:
3230
bytes_clients_data, bytes_old_client_settings = (
3231
pickle.load(stored_state, encoding="bytes"))
3232
# Fix bytes to strings
3233
# clients_data
3234
# .keys()
3235
clients_data = {(key.decode("utf-8")
3236
if isinstance(key, bytes)
3237
else key): value
3238
for key, value in
3239
bytes_clients_data.items()}
3240
del bytes_clients_data
3241
for key in clients_data:
3242
value = {(k.decode("utf-8")
3243
if isinstance(k, bytes) else k): v
3244
for k, v in
3245
clients_data[key].items()}
3246
clients_data[key] = value
3247
# .client_structure
3248
value["client_structure"] = [
3249
(s.decode("utf-8")
3250
if isinstance(s, bytes)
3251
else s) for s in
3252
value["client_structure"]]
3253
# .name & .host
3254
for k in ("name", "host"):
3255
if isinstance(value[k], bytes):
3256
value[k] = value[k].decode("utf-8")
3257
if "key_id" not in value:
3258
value["key_id"] = ""
3259
elif "fingerprint" not in value:
3260
value["fingerprint"] = ""
3261
# old_client_settings
3262
# .keys()
3263
old_client_settings = {
3264
(key.decode("utf-8")
3265
if isinstance(key, bytes)
3266
else key): value
3267
for key, value in
3268
bytes_old_client_settings.items()}
3269
del bytes_old_client_settings
3270
# .host
3271
for value in old_client_settings.values():
3272
if isinstance(value["host"], bytes):
3273
value["host"] = (value["host"]
3274
.decode("utf-8"))
2150
clients_data, old_client_settings = pickle.load(stored_state)
3275
2151
os.remove(stored_state_path)
3276
2152
except IOError as e:
3277
if e.errno == errno.ENOENT:
3278
logger.warning("Could not load persistent state:"
3279
" {}".format(os.strerror(e.errno)))
3280
else:
3281
logger.critical("Could not load persistent state:",
3282
exc_info=e)
2153
logger.warning("Could not load persistant state: {0}".format(e))
2154
if e.errno != errno.ENOENT:
3283
2155
raise
3284
except EOFError as e:
3285
logger.warning("Could not load persistent state: "
3286
"EOFError:",
3287
exc_info=e)
3288
3289
with PGPEngine() as pgp:
3290
for client_name, client in clients_data.items():
3291
# Skip removed clients
3292
if client_name not in client_settings:
3293
continue
3294
3295
# Decide which value to use after restoring saved state.
3296
# We have three different values: Old config file,
3297
# new config file, and saved state.
3298
# New config value takes precedence if it differs from old
3299
# config value, otherwise use saved state.
3300
for name, value in client_settings[client_name].items():
3301
try:
3302
# For each value in new config, check if it
3303
# differs from the old config value (Except for
3304
# the "secret" attribute)
3305
if (name != "secret"
3306
and (value !=
3307
old_client_settings[client_name][name])):
3308
client[name] = value
3309
except KeyError:
3310
pass
3311
3312
# Clients who has passed its expire date can still be
3313
# enabled if its last checker was successful. A Client
3314
# whose checker succeeded before we stored its state is
3315
# assumed to have successfully run all checkers during
3316
# downtime.
3317
if client["enabled"]:
3318
if datetime.datetime.utcnow() >= client["expires"]:
3319
if not client["last_checked_ok"]:
3320
logger.warning(
3321
"disabling client {} - Client never "
3322
"performed a successful checker".format(
3323
client_name))
3324
client["enabled"] = False
3325
elif client["last_checker_status"] != 0:
3326
logger.warning(
3327
"disabling client {} - Client last"
3328
" checker failed with error code"
3329
" {}".format(
3330
client_name,
3331
client["last_checker_status"]))
3332
client["enabled"] = False
3333
else:
3334
client["expires"] = (
3335
datetime.datetime.utcnow()
3336
+ client["timeout"])
3337
logger.debug("Last checker succeeded,"
3338
" keeping {} enabled".format(
3339
client_name))
2156
2157
for client in clients_data:
2158
client_name = client["name"]
2159
2160
# Decide which value to use after restoring saved state.
2161
# We have three different values: Old config file,
2162
# new config file, and saved state.
2163
# New config value takes precedence if it differs from old
2164
# config value, otherwise use saved state.
2165
for name, value in client_settings[client_name].items():
3340
2166
try:
3341
client["secret"] = pgp.decrypt(
3342
client["encrypted_secret"],
3343
client_settings[client_name]["secret"])
3344
except PGPError:
3345
# If decryption fails, we use secret from new settings
3346
logger.debug("Failed to decrypt {} old secret".format(
3347
client_name))
3348
client["secret"] = (client_settings[client_name]
3349
["secret"])
3350
3351
# Add/remove clients based on new changes made to config
3352
for client_name in (set(old_client_settings)
3353
- set(client_settings)):
3354
del clients_data[client_name]
3355
for client_name in (set(client_settings)
3356
- set(old_client_settings)):
3357
clients_data[client_name] = client_settings[client_name]
3358
3359
# Create all client objects
3360
for client_name, client in clients_data.items():
3361
tcp_server.clients[client_name] = client_class(
3362
name=client_name,
3363
settings=client,
3364
server_settings=server_settings)
2167
# For each value in new config, check if it differs
2168
# from the old config value (Except for the "secret"
2169
# attribute)
2170
if name != "secret" and value != old_client_settings[client_name][name]:
2171
setattr(client, name, value)
2172
except KeyError:
2173
pass
2174
2175
# Clients who has passed its expire date, can still be enabled if its
2176
# last checker was sucessful. Clients who checkers failed before we
2177
# stored it state is asumed to had failed checker during downtime.
2178
if client["enabled"] and client["last_checked_ok"]:
2179
if ((datetime.datetime.utcnow() - client["last_checked_ok"])
2180
> client["interval"]):
2181
if client["last_checker_status"] != 0:
2182
client["enabled"] = False
2183
else:
2184
client["expires"] = datetime.datetime.utcnow() + client["timeout"]
2185
2186
client["changedstate"] = (multiprocessing_manager
2187
.Condition(multiprocessing_manager
2188
.Lock()))
2189
if use_dbus:
2190
new_client = ClientDBusTransitional.__new__(ClientDBusTransitional)
2191
tcp_server.clients[client_name] = new_client
2192
new_client.bus = bus
2193
for name, value in client.iteritems():
2194
setattr(new_client, name, value)
2195
client_object_name = unicode(client_name).translate(
2196
{ord("."): ord("_"),
2197
ord("-"): ord("_")})
2198
new_client.dbus_object_path = (dbus.ObjectPath
2199
("/clients/" + client_object_name))
2200
DBusObjectWithProperties.__init__(new_client,
2201
new_client.bus,
2202
new_client.dbus_object_path)
2203
else:
2204
tcp_server.clients[client_name] = Client.__new__(Client)
2205
for name, value in client.iteritems():
2206
setattr(tcp_server.clients[client_name], name, value)
2207
2208
tcp_server.clients[client_name].decrypt_secret(
2209
client_settings[client_name]["secret"])
2210
2211
# Create/remove clients based on new changes made to config
2212
for clientname in set(old_client_settings) - set(client_settings):
2213
del tcp_server.clients[clientname]
2214
for clientname in set(client_settings) - set(old_client_settings):
2215
tcp_server.clients[clientname] = (client_class(name = clientname,
2216
config =
2217
client_settings
2218
[clientname]))
2219
3365
2220
3366
2221
if not tcp_server.clients:
3367
2222
logger.warning("No clients defined")
3368
3369
if not foreground:
3370
if pidfile is not None:
3371
pid = os.getpid()
3372
try:
3373
with pidfile:
3374
print(pid, file=pidfile)
3375
except IOError:
3376
logger.error("Could not write to file %r with PID %d",
3377
pidfilename, pid)
3378
del pidfile
2223
2224
if not debug:
2225
try:
2226
with pidfile:
2227
pid = os.getpid()
2228
pidfile.write(str(pid) + "\n".encode("utf-8"))
2229
del pidfile
2230
except IOError:
2231
logger.error("Could not write to file %r with PID %d",
2232
pidfilename, pid)
2233
except NameError:
2234
# "pidfile" was never created
2235
pass
3379
2236
del pidfilename
3380
3381
for termsig in (signal.SIGHUP, signal.SIGTERM):
3382
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3383
lambda: main_loop.quit() and False)
3384
2237
2238
signal.signal(signal.SIGINT, signal.SIG_IGN)
2239
2240
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2241
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2242
3385
2243
if use_dbus:
3386
3387
@alternate_dbus_interfaces(
3388
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3389
class MandosDBusService(DBusObjectWithObjectManager):
2244
class MandosDBusService(dbus.service.Object):
3390
2245
"""A D-Bus proxy object"""
3391
3392
2246
def __init__(self):
3393
2247
dbus.service.Object.__init__(self, bus, "/")
3394
3395
2248
_interface = "se.recompile.Mandos"
3396
2249
3397
2250
@dbus.service.signal(_interface, signature="o")
3398
2251
def ClientAdded(self, objpath):
3399
2252
"D-Bus signal"
3400
2253
pass
3401
2254
3402
2255
@dbus.service.signal(_interface, signature="ss")
3403
def ClientNotFound(self, key_id, address):
2256
def ClientNotFound(self, fingerprint, address):
3404
2257
"D-Bus signal"
3405
2258
pass
3406
3407
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3408
"true"})
2259
3409
2260
@dbus.service.signal(_interface, signature="os")
3410
2261
def ClientRemoved(self, objpath, name):
3411
2262
"D-Bus signal"
3412
2263
pass
3413
3414
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3415
"true"})
2264
3416
2265
@dbus.service.method(_interface, out_signature="ao")
3417
2266
def GetAllClients(self):
3418
2267
"D-Bus method"
3419
return dbus.Array(c.dbus_object_path for c in
3420
tcp_server.clients.values())
3421
3422
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3423
"true"})
2268
return dbus.Array(c.dbus_object_path
2269
for c in
2270
tcp_server.clients.itervalues())
2271
3424
2272
@dbus.service.method(_interface,
3425
2273
out_signature="a{oa{sv}}")
3426
2274
def GetAllClientsWithProperties(self):
3427
2275
"D-Bus method"
3428
2276
return dbus.Dictionary(
3429
{c.dbus_object_path: c.GetAll(
3430
"se.recompile.Mandos.Client")
3431
for c in tcp_server.clients.values()},
2277
((c.dbus_object_path, c.GetAll(""))
2278
for c in tcp_server.clients.itervalues()),
3432
2279
signature="oa{sv}")
3433
2280
3434
2281
@dbus.service.method(_interface, in_signature="o")
3435
2282
def RemoveClient(self, object_path):
3436
2283
"D-Bus method"
3437
for c in tcp_server.clients.values():
2284
for c in tcp_server.clients.itervalues():
3438
2285
if c.dbus_object_path == object_path:
3439
2286
del tcp_server.clients[c.name]
3440
2287
c.remove_from_connection()
3441
# Don't signal the disabling
2288
# Don't signal anything except ClientRemoved
3442
2289
c.disable(quiet=True)
3443
# Emit D-Bus signal for removal
3444
self.client_removed_signal(c)
2290
# Emit D-Bus signal
2291
self.ClientRemoved(object_path, c.name)
3445
2292
return
3446
2293
raise KeyError(object_path)
3447
2294
3448
2295
del _interface
3449
3450
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3451
out_signature="a{oa{sa{sv}}}")
3452
def GetManagedObjects(self):
3453
"""D-Bus method"""
3454
return dbus.Dictionary(
3455
{client.dbus_object_path:
3456
dbus.Dictionary(
3457
{interface: client.GetAll(interface)
3458
for interface in
3459
client._get_all_interface_names()})
3460
for client in tcp_server.clients.values()})
3461
3462
def client_added_signal(self, client):
3463
"""Send the new standard signal and the old signal"""
3464
if use_dbus:
3465
# New standard signal
3466
self.InterfacesAdded(
3467
client.dbus_object_path,
3468
dbus.Dictionary(
3469
{interface: client.GetAll(interface)
3470
for interface in
3471
client._get_all_interface_names()}))
3472
# Old signal
3473
self.ClientAdded(client.dbus_object_path)
3474
3475
def client_removed_signal(self, client):
3476
"""Send the new standard signal and the old signal"""
3477
if use_dbus:
3478
# New standard signal
3479
self.InterfacesRemoved(
3480
client.dbus_object_path,
3481
client._get_all_interface_names())
3482
# Old signal
3483
self.ClientRemoved(client.dbus_object_path,
3484
client.name)
3485
3486
mandos_dbus_service = MandosDBusService()
3487
3488
# Save modules to variables to exempt the modules from being
3489
# unloaded before the function registered with atexit() is run.
3490
mp = multiprocessing
3491
wn = wnull
3492
2296
2297
class MandosDBusServiceTransitional(MandosDBusService):
2298
__metaclass__ = AlternateDBusNamesMetaclass
2299
mandos_dbus_service = MandosDBusServiceTransitional()
2300
3493
2301
def cleanup():
3494
2302
"Cleanup function; run on exit"
3495
if zeroconf:
3496
service.cleanup()
3497
3498
mp.active_children()
3499
wn.close()
2303
service.cleanup()
2304
2305
multiprocessing.active_children()
3500
2306
if not (tcp_server.clients or client_settings):
3501
2307
return
3502
2308
3503
# Store client before exiting. Secrets are encrypted with key
3504
# based on what config file has. If config file is
3505
# removed/edited, old secret will thus be unrecovable.
3506
clients = {}
3507
with PGPEngine() as pgp:
3508
for client in tcp_server.clients.values():
3509
key = client_settings[client.name]["secret"]
3510
client.encrypted_secret = pgp.encrypt(client.secret,
3511
key)
3512
client_dict = {}
3513
3514
# A list of attributes that can not be pickled
3515
# + secret.
3516
exclude = {"bus", "changedstate", "secret",
3517
"checker", "server_settings"}
3518
for name, typ in inspect.getmembers(dbus.service
3519
.Object):
3520
exclude.add(name)
3521
3522
client_dict["encrypted_secret"] = (client
3523
.encrypted_secret)
3524
for attr in client.client_structure:
3525
if attr not in exclude:
3526
client_dict[attr] = getattr(client, attr)
3527
3528
clients[client.name] = client_dict
3529
del client_settings[client.name]["secret"]
3530
2309
# Store client before exiting. Secrets are encrypted with key based
2310
# on what config file has. If config file is removed/edited, old
2311
# secret will thus be unrecovable.
2312
clients = []
2313
for client in tcp_server.clients.itervalues():
2314
client.encrypt_secret(client_settings[client.name]["secret"])
2315
2316
client_dict = {}
2317
2318
# A list of attributes that will not be stored when shuting down.
2319
exclude = set(("bus", "changedstate", "secret"))
2320
for name, typ in inspect.getmembers(dbus.service.Object):
2321
exclude.add(name)
2322
2323
client_dict["encrypted_secret"] = client.encrypted_secret
2324
for attr in client.client_structure:
2325
if attr not in exclude:
2326
client_dict[attr] = getattr(client, attr)
2327
2328
clients.append(client_dict)
2329
del client_settings[client.name]["secret"]
2330
3531
2331
try:
3532
with tempfile.NamedTemporaryFile(
3533
mode='wb',
3534
suffix=".pickle",
3535
prefix='clients-',
3536
dir=os.path.dirname(stored_state_path),
3537
delete=False) as stored_state:
3538
pickle.dump((clients, client_settings), stored_state,
3539
protocol=2)
3540
tempname = stored_state.name
3541
os.rename(tempname, stored_state_path)
3542
except (IOError, OSError) as e:
3543
if not debug:
3544
try:
3545
os.remove(tempname)
3546
except NameError:
3547
pass
3548
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3549
logger.warning("Could not save persistent state: {}"
3550
.format(os.strerror(e.errno)))
3551
else:
3552
logger.warning("Could not save persistent state:",
3553
exc_info=e)
2332
with os.fdopen(os.open(stored_state_path, os.O_CREAT|os.O_WRONLY|os.O_TRUNC, 0600), "wb") as stored_state:
2333
pickle.dump((clients, client_settings), stored_state)
2334
except IOError as e:
2335
logger.warning("Could not save persistant state: {0}".format(e))
2336
if e.errno != errno.ENOENT:
3554
2337
raise
3555
2338
3556
2339
# Delete all clients, and settings from config
3558
2341
name, client = tcp_server.clients.popitem()
3559
2342
if use_dbus:
3560
2343
client.remove_from_connection()
3561
# Don't signal the disabling
2344
# Don't signal anything except ClientRemoved
3562
2345
client.disable(quiet=True)
3563
# Emit D-Bus signal for removal
3564
2346
if use_dbus:
3565
mandos_dbus_service.client_removed_signal(client)
2347
# Emit D-Bus signal
2348
mandos_dbus_service.ClientRemoved(client
2349
.dbus_object_path,
2350
client.name)
3566
2351
client_settings.clear()
3567
2352
3568
2353
atexit.register(cleanup)
3569
3570
for client in tcp_server.clients.values():
2354
2355
for client in tcp_server.clients.itervalues():
3571
2356
if use_dbus:
3572
# Emit D-Bus signal for adding
3573
mandos_dbus_service.client_added_signal(client)
2357
# Emit D-Bus signal
2358
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3574
2359
# Need to initiate checking of clients
3575
2360
if client.enabled:
3576
2361
client.init_checker()
3577
2362
2363
3578
2364
tcp_server.enable()
3579
2365
tcp_server.server_activate()
3580
2366
3581
2367
# Find out what port we got
3582
if zeroconf:
3583
service.port = tcp_server.socket.getsockname()[1]
2368
service.port = tcp_server.socket.getsockname()[1]
3584
2369
if use_ipv6:
3585
2370
logger.info("Now listening on address %r, port %d,"
3586
" flowinfo %d, scope_id %d",
3587
*tcp_server.socket.getsockname())
2371
" flowinfo %d, scope_id %d"
2372
% tcp_server.socket.getsockname())
3588
2373
else: # IPv4
3589
logger.info("Now listening on address %r, port %d",
3590
*tcp_server.socket.getsockname())
3591
3592
# service.interface = tcp_server.socket.getsockname()[3]
3593
2374
logger.info("Now listening on address %r, port %d"
2375
% tcp_server.socket.getsockname())
2376
2377
#service.interface = tcp_server.socket.getsockname()[3]
2378
3594
2379
try:
3595
if zeroconf:
3596
# From the Avahi example code
3597
try:
3598
service.activate()
3599
except dbus.exceptions.DBusException as error:
3600
logger.critical("D-Bus Exception", exc_info=error)
3601
cleanup()
3602
sys.exit(1)
3603
# End of Avahi example code
3604
3605
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3606
lambda *args, **kwargs:
3607
(tcp_server.handle_request
3608
(*args[2:], **kwargs) or True))
3609
2380
# From the Avahi example code
2381
try:
2382
service.activate()
2383
except dbus.exceptions.DBusException as error:
2384
logger.critical("DBusException: %s", error)
2385
cleanup()
2386
sys.exit(1)
2387
# End of Avahi example code
2388
2389
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2390
lambda *args, **kwargs:
2391
(tcp_server.handle_request
2392
(*args[2:], **kwargs) or True))
2393
3610
2394
logger.debug("Starting main loop")
3611
2395
main_loop.run()
3612
2396
except AvahiError as error:
3613
logger.critical("Avahi Error", exc_info=error)
2397
logger.critical("AvahiError: %s", error)
3614
2398
cleanup()
3615
2399
sys.exit(1)
3616
2400
except KeyboardInterrupt:
3621
2405
# Must run before the D-Bus bus name gets deregistered
3622
2406
cleanup()
3623
2407
3624
3625
def should_only_run_tests():
3626
parser = argparse.ArgumentParser(add_help=False)
3627
parser.add_argument("--check", action='store_true')
3628
args, unknown_args = parser.parse_known_args()
3629
run_tests = args.check
3630
if run_tests:
3631
# Remove --check argument from sys.argv
3632
sys.argv[1:] = unknown_args
3633
return run_tests
3634
3635
# Add all tests from doctest strings
3636
def load_tests(loader, tests, none):
3637
import doctest
3638
tests.addTests(doctest.DocTestSuite())
3639
return tests
3640
2408
3641
2409
if __name__ == '__main__':
3642
try:
3643
if should_only_run_tests():
3644
# Call using ./mandos --check [--verbose]
3645
unittest.main()
3646
else:
3647
main()
3648
finally:
3649
logging.shutdown()
2410
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0