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- Committer: Teddy Hogeborn
- Date: 2019-11-03 19:17:57 UTC
- Revision ID: teddy@recompile.se-20191103191757-1hdpp0u5fxa8iumo
INSTALL: Add "-" argument to "su" invocations.
- files added:
- bugs.xml
- debian/tests
- debian/upstream
- dracut-module
- network-hooks.d
- plugin-helpers
- files removed:
- initramfs-tools-hook-conf
- files modified:
- .bzrignore
added
removed
mandos
1
#!/usr/bin/python
2
# -*- mode: python; coding: utf-8 -*-
3
#
1
#!/usr/bin/python3 -bI
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
#
4
4
# Mandos server - give out binary blobs to connecting clients.
5
#
5
#
6
6
# This program is partly derived from an example program for an Avahi
7
7
# service publisher, downloaded from
8
8
# <http://avahi.org/wiki/PythonPublishExample>. This includes the
9
9
# methods "add", "remove", "server_state_changed",
10
10
# "entry_group_state_changed", "cleanup", and "activate" in the
11
11
# "AvahiService" class, and some lines in "main".
12
#
12
#
13
13
# Everything else is
14
# Copyright © 2008-2011 Teddy Hogeborn
15
# Copyright © 2008-2011 Björn Påhlsson
16
#
17
# This program is free software: you can redistribute it and/or modify
18
# it under the terms of the GNU General Public License as published by
14
# Copyright © 2008-2019 Teddy Hogeborn
15
# Copyright © 2008-2019 Björn Påhlsson
16
#
17
# This file is part of Mandos.
18
#
19
# Mandos is free software: you can redistribute it and/or modify it
20
# under the terms of the GNU General Public License as published by
19
21
# the Free Software Foundation, either version 3 of the License, or
20
22
# (at your option) any later version.
21
23
#
22
# This program is distributed in the hope that it will be useful,
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
24
# Mandos is distributed in the hope that it will be useful, but
25
# WITHOUT ANY WARRANTY; without even the implied warranty of
24
26
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25
27
# GNU General Public License for more details.
26
#
28
#
27
29
# You should have received a copy of the GNU General Public License
28
# along with this program. If not, see
29
# <http://www.gnu.org/licenses/>.
30
#
31
# Contact the authors at <mandos@fukt.bsnet.se>.
32
#
30
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
31
#
32
# Contact the authors at <mandos@recompile.se>.
33
#
33
34
34
35
from __future__ import (division, absolute_import, print_function,
35
36
unicode_literals)
36
37
37
import SocketServer as socketserver
38
try:
39
from future_builtins import *
40
except ImportError:
41
pass
42
43
try:
44
import SocketServer as socketserver
45
except ImportError:
46
import socketserver
38
47
import socket
39
48
import argparse
40
49
import datetime
41
50
import errno
42
import gnutls.crypto
43
import gnutls.connection
44
import gnutls.errors
45
import gnutls.library.functions
46
import gnutls.library.constants
47
import gnutls.library.types
48
import ConfigParser as configparser
51
try:
52
import ConfigParser as configparser
53
except ImportError:
54
import configparser
49
55
import sys
50
56
import re
51
57
import os
60
66
import struct
61
67
import fcntl
62
68
import functools
63
import cPickle as pickle
69
try:
70
import cPickle as pickle
71
except ImportError:
72
import pickle
64
73
import multiprocessing
65
74
import types
75
import binascii
76
import tempfile
77
import itertools
78
import collections
79
import codecs
80
import unittest
66
81
67
82
import dbus
68
83
import dbus.service
69
import gobject
70
import avahi
84
import gi
85
from gi.repository import GLib
71
86
from dbus.mainloop.glib import DBusGMainLoop
72
87
import ctypes
73
88
import ctypes.util
74
89
import xml.dom.minidom
75
90
import inspect
76
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
101
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:
78
104
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
79
105
except AttributeError:
80
106
try:
107
# This is where SO_BINDTODEVICE was up to and including Python
108
# 2.6, and also 3.2:
81
109
from IN import SO_BINDTODEVICE
82
110
except ImportError:
83
SO_BINDTODEVICE = None
84
85
86
version = "1.3.1"
87
88
#logger = logging.getLogger('mandos')
89
logger = logging.Logger('mandos')
90
syslogger = (logging.handlers.SysLogHandler
91
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
92
address = str("/dev/log")))
93
syslogger.setFormatter(logging.Formatter
94
('Mandos [%(process)d]: %(levelname)s:'
95
' %(message)s'))
96
logger.addHandler(syslogger)
97
98
console = logging.StreamHandler()
99
console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'
100
' %(levelname)s:'
101
' %(message)s'))
102
logger.addHandler(console)
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 = "1.8.9"
132
stored_state_file = "clients.pickle"
133
134
logger = logging.getLogger()
135
logging.captureWarnings(True) # Show warnings via the logging system
136
syslogger = None
137
138
try:
139
if_nametoindex = ctypes.cdll.LoadLibrary(
140
ctypes.util.find_library("c")).if_nametoindex
141
except (OSError, AttributeError):
142
143
def if_nametoindex(interface):
144
"Get an interface index the hard way, i.e. using fcntl()"
145
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
146
with contextlib.closing(socket.socket()) as s:
147
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
148
struct.pack(b"16s16x", interface))
149
interface_index = struct.unpack("I", ifreq[16:20])[0]
150
return interface_index
151
152
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):
170
"""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"))
176
syslogger.setFormatter(logging.Formatter
177
('Mandos [%(process)d]: %(levelname)s:'
178
' %(message)s'))
179
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)
188
logger.setLevel(level)
189
190
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 == b"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 == b"gpg" or self.gpg.endswith(b"/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
103
316
104
317
class AvahiError(Exception):
105
318
def __init__(self, value, *args, **kwargs):
106
319
self.value = value
107
super(AvahiError, self).__init__(value, *args, **kwargs)
108
def __unicode__(self):
109
return unicode(repr(self.value))
320
return super(AvahiError, self).__init__(value, *args,
321
**kwargs)
322
110
323
111
324
class AvahiServiceError(AvahiError):
112
325
pass
113
326
327
114
328
class AvahiGroupError(AvahiError):
115
329
pass
116
330
117
331
118
class AvahiService(object):
332
class AvahiService:
119
333
"""An Avahi (Zeroconf) service.
120
334
121
335
Attributes:
122
336
interface: integer; avahi.IF_UNSPEC or an interface index.
123
337
Used to optionally bind to the specified interface.
124
338
name: string; Example: 'Mandos'
125
339
type: string; Example: '_mandos._tcp'.
126
See <http://www.dns-sd.org/ServiceTypes.html>
340
See <https://www.iana.org/assignments/service-names-port-numbers>
127
341
port: integer; what port to announce
128
342
TXT: list of strings; TXT record for the service
129
343
domain: string; Domain to publish on, default to .local if empty.
135
349
server: D-Bus Server
136
350
bus: dbus.SystemBus()
137
351
"""
138
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
139
servicetype = None, port = None, TXT = None,
140
domain = "", host = "", max_renames = 32768,
141
protocol = avahi.PROTO_UNSPEC, bus = None):
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):
142
364
self.interface = interface
143
365
self.name = name
144
366
self.type = servicetype
153
375
self.server = None
154
376
self.bus = bus
155
377
self.entry_group_state_changed_match = None
156
def rename(self):
378
379
def rename(self, remove=True):
157
380
"""Derived from the Avahi example code"""
158
381
if self.rename_count >= self.max_renames:
159
382
logger.critical("No suitable Zeroconf service name found"
160
383
" after %i retries, exiting.",
161
384
self.rename_count)
162
385
raise AvahiServiceError("Too many renames")
163
self.name = unicode(self.server.GetAlternativeServiceName(self.name))
386
self.name = str(
387
self.server.GetAlternativeServiceName(self.name))
388
self.rename_count += 1
164
389
logger.info("Changing Zeroconf service name to %r ...",
165
390
self.name)
166
syslogger.setFormatter(logging.Formatter
167
('Mandos (%s) [%%(process)d]:'
168
' %%(levelname)s: %%(message)s'
169
% self.name))
170
self.remove()
391
if remove:
392
self.remove()
171
393
try:
172
394
self.add()
173
395
except dbus.exceptions.DBusException as error:
174
logger.critical("DBusException: %s", error)
175
self.cleanup()
176
os._exit(1)
177
self.rename_count += 1
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
178
405
def remove(self):
179
406
"""Derived from the Avahi example code"""
180
407
if self.entry_group_state_changed_match is not None:
182
409
self.entry_group_state_changed_match = None
183
410
if self.group is not None:
184
411
self.group.Reset()
412
185
413
def add(self):
186
414
"""Derived from the Avahi example code"""
187
415
self.remove()
192
420
avahi.DBUS_INTERFACE_ENTRY_GROUP)
193
421
self.entry_group_state_changed_match = (
194
422
self.group.connect_to_signal(
195
'StateChanged', self .entry_group_state_changed))
423
'StateChanged', self.entry_group_state_changed))
196
424
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
197
425
self.name, self.type)
198
426
self.group.AddService(
204
432
dbus.UInt16(self.port),
205
433
avahi.string_array_to_txt_array(self.TXT))
206
434
self.group.Commit()
435
207
436
def entry_group_state_changed(self, state, error):
208
437
"""Derived from the Avahi example code"""
209
438
logger.debug("Avahi entry group state change: %i", state)
210
439
211
440
if state == avahi.ENTRY_GROUP_ESTABLISHED:
212
441
logger.debug("Zeroconf service established.")
213
442
elif state == avahi.ENTRY_GROUP_COLLISION:
215
444
self.rename()
216
445
elif state == avahi.ENTRY_GROUP_FAILURE:
217
446
logger.critical("Avahi: Error in group state changed %s",
218
unicode(error))
219
raise AvahiGroupError("State changed: %s"
220
% unicode(error))
447
str(error))
448
raise AvahiGroupError("State changed: {!s}".format(error))
449
221
450
def cleanup(self):
222
451
"""Derived from the Avahi example code"""
223
452
if self.group is not None:
224
453
try:
225
454
self.group.Free()
226
455
except (dbus.exceptions.UnknownMethodException,
227
dbus.exceptions.DBusException) as e:
456
dbus.exceptions.DBusException):
228
457
pass
229
458
self.group = None
230
459
self.remove()
460
231
461
def server_state_changed(self, state, error=None):
232
462
"""Derived from the Avahi example code"""
233
463
logger.debug("Avahi server state change: %i", state)
234
bad_states = { avahi.SERVER_INVALID:
235
"Zeroconf server invalid",
236
avahi.SERVER_REGISTERING: None,
237
avahi.SERVER_COLLISION:
238
"Zeroconf server name collision",
239
avahi.SERVER_FAILURE:
240
"Zeroconf server failure" }
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
}
241
470
if state in bad_states:
242
471
if bad_states[state] is not None:
243
472
if error is None:
246
475
logger.error(bad_states[state] + ": %r", error)
247
476
self.cleanup()
248
477
elif state == avahi.SERVER_RUNNING:
249
self.add()
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)
250
490
else:
251
491
if error is None:
252
492
logger.debug("Unknown state: %r", state)
253
493
else:
254
494
logger.debug("Unknown state: %r: %r", state, error)
495
255
496
def activate(self):
256
497
"""Derived from the Avahi example code"""
257
498
if self.server is None:
261
502
follow_name_owner_changes=True),
262
503
avahi.DBUS_INTERFACE_SERVER)
263
504
self.server.connect_to_signal("StateChanged",
264
self.server_state_changed)
505
self.server_state_changed)
265
506
self.server_state_changed(self.server.GetState())
266
507
267
508
268
def _timedelta_to_milliseconds(td):
269
"Convert a datetime.timedelta() to milliseconds"
270
return ((td.days * 24 * 60 * 60 * 1000)
271
+ (td.seconds * 1000)
272
+ (td.microseconds // 1000))
273
274
class Client(object):
509
class AvahiServiceToSyslog(AvahiService):
510
def rename(self, *args, **kwargs):
511
"""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)))
516
return ret
517
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:
275
832
"""A representation of a client host served by this server.
276
833
277
834
Attributes:
278
_approved: bool(); 'None' if not yet approved/disapproved
835
approved: bool(); 'None' if not yet approved/disapproved
279
836
approval_delay: datetime.timedelta(); Time to wait for approval
280
837
approval_duration: datetime.timedelta(); Duration of one approval
281
checker: subprocess.Popen(); a running checker process used
282
to see if the client lives.
283
'None' if no process is running.
284
checker_callback_tag: a gobject event source tag, or None
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
285
842
checker_command: string; External command which is run to check
286
843
if client lives. %() expansions are done at
287
844
runtime with vars(self) as dict, so that for
288
845
instance %(name)s can be used in the command.
289
checker_initiator_tag: a gobject event source tag, or None
846
checker_initiator_tag: a GLib event source tag, or None
290
847
created: datetime.datetime(); (UTC) object creation
848
client_structure: Object describing what attributes a client has
849
and is used for storing the client at exit
291
850
current_checker_command: string; current running checker_command
292
disable_hook: If set, called by disable() as disable_hook(self)
293
disable_initiator_tag: a gobject event source tag, or None
851
disable_initiator_tag: a GLib event source tag, or None
294
852
enabled: bool()
295
853
fingerprint: string (40 or 32 hexadecimal digits); used to
296
uniquely identify the client
854
uniquely identify an OpenPGP client
855
key_id: string (64 hexadecimal digits); used to uniquely identify
856
a client using raw public keys
297
857
host: string; available for use by the checker command
298
858
interval: datetime.timedelta(); How often to start a new checker
299
859
last_approval_request: datetime.datetime(); (UTC) or None
300
860
last_checked_ok: datetime.datetime(); (UTC) or None
301
last_enabled: datetime.datetime(); (UTC)
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
302
867
name: string; from the config file, used in log messages and
303
868
D-Bus identifiers
304
869
secret: bytestring; sent verbatim (over TLS) to client
305
870
timeout: datetime.timedelta(); How long from last_checked_ok
306
871
until this client is disabled
307
extended_timeout: extra long timeout when password has been sent
872
extended_timeout: extra long timeout when secret has been sent
308
873
runtime_expansions: Allowed attributes for runtime expansion.
309
874
expires: datetime.datetime(); time (UTC) when a client will be
310
875
disabled, or None
876
server_settings: The server_settings dict from main()
311
877
"""
312
878
313
879
runtime_expansions = ("approval_delay", "approval_duration",
314
"created", "enabled", "fingerprint",
315
"host", "interval", "last_checked_ok",
880
"created", "enabled", "expires", "key_id",
881
"fingerprint", "host", "interval",
882
"last_approval_request", "last_checked_ok",
316
883
"last_enabled", "name", "timeout")
317
318
def timeout_milliseconds(self):
319
"Return the 'timeout' attribute in milliseconds"
320
return _timedelta_to_milliseconds(self.timeout)
321
322
def extended_timeout_milliseconds(self):
323
"Return the 'extended_timeout' attribute in milliseconds"
324
return _timedelta_to_milliseconds(self.extended_timeout)
325
326
def interval_milliseconds(self):
327
"Return the 'interval' attribute in milliseconds"
328
return _timedelta_to_milliseconds(self.interval)
329
330
def approval_delay_milliseconds(self):
331
return _timedelta_to_milliseconds(self.approval_delay)
332
333
def __init__(self, name = None, disable_hook=None, config=None):
334
"""Note: the 'checker' key in 'config' sets the
335
'checker_command' attribute and *not* the 'checker'
336
attribute."""
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):
337
951
self.name = name
338
if config is None:
339
config = {}
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
340
969
logger.debug("Creating client %r", self.name)
341
# Uppercase and remove spaces from fingerprint for later
342
# comparison purposes with return value from the fingerprint()
343
# function
344
self.fingerprint = (config["fingerprint"].upper()
345
.replace(" ", ""))
970
logger.debug(" Key ID: %s", self.key_id)
346
971
logger.debug(" Fingerprint: %s", self.fingerprint)
347
if "secret" in config:
348
self.secret = config["secret"].decode("base64")
349
elif "secfile" in config:
350
with open(os.path.expanduser(os.path.expandvars
351
(config["secfile"])),
352
"rb") as secfile:
353
self.secret = secfile.read()
354
else:
355
raise TypeError("No secret or secfile for client %s"
356
% self.name)
357
self.host = config.get("host", "")
358
self.created = datetime.datetime.utcnow()
359
self.enabled = False
360
self.last_approval_request = None
361
self.last_enabled = None
362
self.last_checked_ok = None
363
self.timeout = string_to_delta(config["timeout"])
364
self.extended_timeout = string_to_delta(config["extended_timeout"])
365
self.interval = string_to_delta(config["interval"])
366
self.disable_hook = disable_hook
972
self.created = settings.get("created",
973
datetime.datetime.utcnow())
974
975
# attributes specific for this server instance
367
976
self.checker = None
368
977
self.checker_initiator_tag = None
369
978
self.disable_initiator_tag = None
370
self.expires = None
371
979
self.checker_callback_tag = None
372
self.checker_command = config["checker"]
373
980
self.current_checker_command = None
374
self.last_connect = None
375
self._approved = None
376
self.approved_by_default = config.get("approved_by_default",
377
True)
981
self.approved = None
378
982
self.approvals_pending = 0
379
self.approval_delay = string_to_delta(
380
config["approval_delay"])
381
self.approval_duration = string_to_delta(
382
config["approval_duration"])
383
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
384
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("_")]
988
self.client_structure.append("client_structure")
989
990
for name, t in inspect.getmembers(
991
type(self), lambda obj: isinstance(obj, property)):
992
if not name.startswith("_"):
993
self.client_structure.append(name)
994
995
# Send notice to process children that client state has changed
385
996
def send_changedstate(self):
386
self.changedstate.acquire()
387
self.changedstate.notify_all()
388
self.changedstate.release()
389
997
with self.changedstate:
998
self.changedstate.notify_all()
999
390
1000
def enable(self):
391
1001
"""Start this client's checker and timeout hooks"""
392
1002
if getattr(self, "enabled", False):
393
1003
# Already enabled
394
1004
return
395
self.send_changedstate()
396
# Schedule a new checker to be started an 'interval' from now,
397
# and every interval from then on.
398
self.checker_initiator_tag = (gobject.timeout_add
399
(self.interval_milliseconds(),
400
self.start_checker))
401
# Schedule a disable() when 'timeout' has passed
402
1005
self.expires = datetime.datetime.utcnow() + self.timeout
403
self.disable_initiator_tag = (gobject.timeout_add
404
(self.timeout_milliseconds(),
405
self.disable))
406
1006
self.enabled = True
407
1007
self.last_enabled = datetime.datetime.utcnow()
408
# Also start a new checker *right now*.
409
self.start_checker()
410
1008
self.init_checker()
1009
self.send_changedstate()
1010
411
1011
def disable(self, quiet=True):
412
1012
"""Disable this client."""
413
1013
if not getattr(self, "enabled", False):
414
1014
return False
415
1015
if not quiet:
416
self.send_changedstate()
417
if not quiet:
418
1016
logger.info("Disabling client %s", self.name)
419
if getattr(self, "disable_initiator_tag", False):
420
gobject.source_remove(self.disable_initiator_tag)
1017
if getattr(self, "disable_initiator_tag", None) is not None:
1018
GLib.source_remove(self.disable_initiator_tag)
421
1019
self.disable_initiator_tag = None
422
1020
self.expires = None
423
if getattr(self, "checker_initiator_tag", False):
424
gobject.source_remove(self.checker_initiator_tag)
1021
if getattr(self, "checker_initiator_tag", None) is not None:
1022
GLib.source_remove(self.checker_initiator_tag)
425
1023
self.checker_initiator_tag = None
426
1024
self.stop_checker()
427
if self.disable_hook:
428
self.disable_hook(self)
429
1025
self.enabled = False
430
# Do not run this again if called by a gobject.timeout_add
1026
if not quiet:
1027
self.send_changedstate()
1028
# Do not run this again if called by a GLib.timeout_add
431
1029
return False
432
1030
433
1031
def __del__(self):
434
self.disable_hook = None
435
1032
self.disable()
436
437
def checker_callback(self, pid, condition, command):
1033
1034
def init_checker(self):
1035
# Schedule a new checker to be started an 'interval' from now,
1036
# 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)
1042
# 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)
1047
# Also start a new checker *right now*.
1048
self.start_checker()
1049
1050
def checker_callback(self, source, condition, connection,
1051
command):
438
1052
"""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
if self.checker is not None:
1057
self.checker.join()
439
1058
self.checker_callback_tag = None
440
1059
self.checker = None
441
if os.WIFEXITED(condition):
442
exitstatus = os.WEXITSTATUS(condition)
443
if exitstatus == 0:
1060
1061
if returncode >= 0:
1062
self.last_checker_status = returncode
1063
self.last_checker_signal = None
1064
if self.last_checker_status == 0:
444
1065
logger.info("Checker for %(name)s succeeded",
445
1066
vars(self))
446
1067
self.checked_ok()
447
1068
else:
448
logger.info("Checker for %(name)s failed",
449
vars(self))
1069
logger.info("Checker for %(name)s failed", vars(self))
450
1070
else:
1071
self.last_checker_status = -1
1072
self.last_checker_signal = -returncode
451
1073
logger.warning("Checker for %(name)s crashed?",
452
1074
vars(self))
453
454
def checked_ok(self, timeout=None):
455
"""Bump up the timeout for this client.
456
457
This should only be called when the client has been seen,
458
alive and well.
459
"""
1075
return False
1076
1077
def checked_ok(self):
1078
"""Assert that the client has been seen, alive and well."""
1079
self.last_checked_ok = datetime.datetime.utcnow()
1080
self.last_checker_status = 0
1081
self.last_checker_signal = None
1082
self.bump_timeout()
1083
1084
def bump_timeout(self, timeout=None):
1085
"""Bump up the timeout for this client."""
460
1086
if timeout is None:
461
1087
timeout = self.timeout
462
self.last_checked_ok = datetime.datetime.utcnow()
463
gobject.source_remove(self.disable_initiator_tag)
464
self.expires = datetime.datetime.utcnow() + timeout
465
self.disable_initiator_tag = (gobject.timeout_add
466
(_timedelta_to_milliseconds(timeout),
467
self.disable))
468
1088
if self.disable_initiator_tag is not None:
1089
GLib.source_remove(self.disable_initiator_tag)
1090
self.disable_initiator_tag = None
1091
if getattr(self, "enabled", False):
1092
self.disable_initiator_tag = GLib.timeout_add(
1093
int(timeout.total_seconds() * 1000), self.disable)
1094
self.expires = datetime.datetime.utcnow() + timeout
1095
469
1096
def need_approval(self):
470
1097
self.last_approval_request = datetime.datetime.utcnow()
471
1098
472
1099
def start_checker(self):
473
1100
"""Start a new checker subprocess if one is not running.
474
1101
475
1102
If a checker already exists, leave it running and do
476
1103
nothing."""
477
1104
# The reason for not killing a running checker is that if we
478
# did that, then if a checker (for some reason) started
479
# running slowly and taking more than 'interval' time, the
480
# client would inevitably timeout, since no checker would get
481
# a chance to run to completion. If we instead leave running
1105
# did that, and if a checker (for some reason) started running
1106
# slowly and taking more than 'interval' time, then the client
1107
# would inevitably timeout, since no checker would get a
1108
# chance to run to completion. If we instead leave running
482
1109
# checkers alone, the checker would have to take more time
483
1110
# than 'timeout' for the client to be disabled, which is as it
484
1111
# should be.
485
486
# If a checker exists, make sure it is not a zombie
487
try:
488
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
489
except (AttributeError, OSError) as error:
490
if (isinstance(error, OSError)
491
and error.errno != errno.ECHILD):
492
raise error
493
else:
494
if pid:
495
logger.warning("Checker was a zombie")
496
gobject.source_remove(self.checker_callback_tag)
497
self.checker_callback(pid, status,
498
self.current_checker_command)
1112
1113
if self.checker is not None and not self.checker.is_alive():
1114
logger.warning("Checker was not alive; joining")
1115
self.checker.join()
1116
self.checker = None
499
1117
# Start a new checker if needed
500
1118
if self.checker is None:
1119
# Escape attributes for the shell
1120
escaped_attrs = {
1121
attr: re.escape(str(getattr(self, attr)))
1122
for attr in self.runtime_expansions}
501
1123
try:
502
# In case checker_command has exactly one % operator
503
command = self.checker_command % self.host
504
except TypeError:
505
# Escape attributes for the shell
506
escaped_attrs = dict(
507
(attr,
508
re.escape(unicode(str(getattr(self, attr, "")),
509
errors=
510
'replace')))
511
for attr in
512
self.runtime_expansions)
513
514
try:
515
command = self.checker_command % escaped_attrs
516
except TypeError as error:
517
logger.error('Could not format string "%s":'
518
' %s', self.checker_command, error)
519
return True # Try again later
1124
command = self.checker_command % escaped_attrs
1125
except TypeError as error:
1126
logger.error('Could not format string "%s"',
1127
self.checker_command,
1128
exc_info=error)
1129
return True # Try again later
520
1130
self.current_checker_command = command
521
try:
522
logger.info("Starting checker %r for %s",
523
command, self.name)
524
# We don't need to redirect stdout and stderr, since
525
# in normal mode, that is already done by daemon(),
526
# and in debug mode we don't want to. (Stdin is
527
# always replaced by /dev/null.)
528
self.checker = subprocess.Popen(command,
529
close_fds=True,
530
shell=True, cwd="/")
531
self.checker_callback_tag = (gobject.child_watch_add
532
(self.checker.pid,
533
self.checker_callback,
534
data=command))
535
# The checker may have completed before the gobject
536
# watch was added. Check for this.
537
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
538
if pid:
539
gobject.source_remove(self.checker_callback_tag)
540
self.checker_callback(pid, status, command)
541
except OSError as error:
542
logger.error("Failed to start subprocess: %s",
543
error)
544
# Re-run this periodically if run by gobject.timeout_add
1131
logger.info("Starting checker %r for %s", command,
1132
self.name)
1133
# We don't need to redirect stdout and stderr, since
1134
# in normal mode, that is already done by daemon(),
1135
# and in debug mode we don't want to. (Stdin is
1136
# always replaced by /dev/null.)
1137
# The exception is when not debugging but nevertheless
1138
# running in the foreground; use the previously
1139
# created wnull.
1140
popen_args = {"close_fds": True,
1141
"shell": True,
1142
"cwd": "/"}
1143
if (not self.server_settings["debug"]
1144
and self.server_settings["foreground"]):
1145
popen_args.update({"stdout": wnull,
1146
"stderr": wnull})
1147
pipe = multiprocessing.Pipe(duplex=False)
1148
self.checker = multiprocessing.Process(
1149
target=call_pipe,
1150
args=(pipe[1], subprocess.call, command),
1151
kwargs=popen_args)
1152
self.checker.start()
1153
self.checker_callback_tag = GLib.io_add_watch(
1154
GLib.IOChannel.unix_new(pipe[0].fileno()),
1155
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
1156
self.checker_callback, pipe[0], command)
1157
# Re-run this periodically if run by GLib.timeout_add
545
1158
return True
546
1159
547
1160
def stop_checker(self):
548
1161
"""Force the checker process, if any, to stop."""
549
1162
if self.checker_callback_tag:
550
gobject.source_remove(self.checker_callback_tag)
1163
GLib.source_remove(self.checker_callback_tag)
551
1164
self.checker_callback_tag = None
552
1165
if getattr(self, "checker", None) is None:
553
1166
return
554
1167
logger.debug("Stopping checker for %(name)s", vars(self))
555
try:
556
os.kill(self.checker.pid, signal.SIGTERM)
557
#time.sleep(0.5)
558
#if self.checker.poll() is None:
559
# os.kill(self.checker.pid, signal.SIGKILL)
560
except OSError as error:
561
if error.errno != errno.ESRCH: # No such process
562
raise
1168
self.checker.terminate()
563
1169
self.checker = None
564
1170
565
1171
566
def dbus_service_property(dbus_interface, signature="v",
567
access="readwrite", byte_arrays=False):
1172
def dbus_service_property(dbus_interface,
1173
signature="v",
1174
access="readwrite",
1175
byte_arrays=False):
568
1176
"""Decorators for marking methods of a DBusObjectWithProperties to
569
1177
become properties on the D-Bus.
570
1178
571
1179
The decorated method will be called with no arguments by "Get"
572
1180
and with one argument by "Set".
573
1181
574
1182
The parameters, where they are supported, are the same as
575
1183
dbus.service.method, except there is only "signature", since the
576
1184
type from Get() and the type sent to Set() is the same.
579
1187
# "Set" method, so we fail early here:
580
1188
if byte_arrays and signature != "ay":
581
1189
raise ValueError("Byte arrays not supported for non-'ay'"
582
" signature %r" % signature)
1190
" signature {!r}".format(signature))
1191
583
1192
def decorator(func):
584
1193
func._dbus_is_property = True
585
1194
func._dbus_interface = dbus_interface
588
1197
func._dbus_name = func.__name__
589
1198
if func._dbus_name.endswith("_dbus_property"):
590
1199
func._dbus_name = func._dbus_name[:-14]
591
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
592
return func
1200
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
1201
return func
1202
1203
return decorator
1204
1205
1206
def dbus_interface_annotations(dbus_interface):
1207
"""Decorator for marking functions returning interface annotations
1208
1209
Usage:
1210
1211
@dbus_interface_annotations("org.example.Interface")
1212
def _foo(self): # Function name does not matter
1213
return {"org.freedesktop.DBus.Deprecated": "true",
1214
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1215
"false"}
1216
"""
1217
1218
def decorator(func):
1219
func._dbus_is_interface = True
1220
func._dbus_interface = dbus_interface
1221
func._dbus_name = dbus_interface
1222
return func
1223
1224
return decorator
1225
1226
1227
def dbus_annotations(annotations):
1228
"""Decorator to annotate D-Bus methods, signals or properties
1229
Usage:
1230
1231
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1232
"org.freedesktop.DBus.Property."
1233
"EmitsChangedSignal": "false"})
1234
@dbus_service_property("org.example.Interface", signature="b",
1235
access="r")
1236
def Property_dbus_property(self):
1237
return dbus.Boolean(False)
1238
1239
See also the DBusObjectWithAnnotations class.
1240
"""
1241
1242
def decorator(func):
1243
func._dbus_annotations = annotations
1244
return func
1245
593
1246
return decorator
594
1247
595
1248
596
1249
class DBusPropertyException(dbus.exceptions.DBusException):
597
1250
"""A base class for D-Bus property-related exceptions
598
1251
"""
599
def __unicode__(self):
600
return unicode(str(self))
1252
pass
601
1253
602
1254
603
1255
class DBusPropertyAccessException(DBusPropertyException):
612
1264
pass
613
1265
614
1266
615
class DBusObjectWithProperties(dbus.service.Object):
1267
class DBusObjectWithAnnotations(dbus.service.Object):
1268
"""A D-Bus object with annotations.
1269
1270
Classes inheriting from this can use the dbus_annotations
1271
decorator to add annotations to methods or signals.
1272
"""
1273
1274
@staticmethod
1275
def _is_dbus_thing(thing):
1276
"""Returns a function testing if an attribute is a D-Bus thing
1277
1278
If called like _is_dbus_thing("method") it returns a function
1279
suitable for use as predicate to inspect.getmembers().
1280
"""
1281
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1282
False)
1283
1284
def _get_all_dbus_things(self, thing):
1285
"""Returns a generator of (name, attribute) pairs
1286
"""
1287
return ((getattr(athing.__get__(self), "_dbus_name", name),
1288
athing.__get__(self))
1289
for cls in self.__class__.__mro__
1290
for name, athing in
1291
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1292
1293
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1294
out_signature="s",
1295
path_keyword='object_path',
1296
connection_keyword='connection')
1297
def Introspect(self, object_path, connection):
1298
"""Overloading of standard D-Bus method.
1299
1300
Inserts annotation tags on methods and signals.
1301
"""
1302
xmlstring = dbus.service.Object.Introspect(self, object_path,
1303
connection)
1304
try:
1305
document = xml.dom.minidom.parseString(xmlstring)
1306
1307
for if_tag in document.getElementsByTagName("interface"):
1308
# Add annotation tags
1309
for typ in ("method", "signal"):
1310
for tag in if_tag.getElementsByTagName(typ):
1311
annots = dict()
1312
for name, prop in (self.
1313
_get_all_dbus_things(typ)):
1314
if (name == tag.getAttribute("name")
1315
and prop._dbus_interface
1316
== if_tag.getAttribute("name")):
1317
annots.update(getattr(
1318
prop, "_dbus_annotations", {}))
1319
for name, value in annots.items():
1320
ann_tag = document.createElement(
1321
"annotation")
1322
ann_tag.setAttribute("name", name)
1323
ann_tag.setAttribute("value", value)
1324
tag.appendChild(ann_tag)
1325
# Add interface annotation tags
1326
for annotation, value in dict(
1327
itertools.chain.from_iterable(
1328
annotations().items()
1329
for name, annotations
1330
in self._get_all_dbus_things("interface")
1331
if name == if_tag.getAttribute("name")
1332
)).items():
1333
ann_tag = document.createElement("annotation")
1334
ann_tag.setAttribute("name", annotation)
1335
ann_tag.setAttribute("value", value)
1336
if_tag.appendChild(ann_tag)
1337
# Fix argument name for the Introspect method itself
1338
if (if_tag.getAttribute("name")
1339
== dbus.INTROSPECTABLE_IFACE):
1340
for cn in if_tag.getElementsByTagName("method"):
1341
if cn.getAttribute("name") == "Introspect":
1342
for arg in cn.getElementsByTagName("arg"):
1343
if (arg.getAttribute("direction")
1344
== "out"):
1345
arg.setAttribute("name",
1346
"xml_data")
1347
xmlstring = document.toxml("utf-8")
1348
document.unlink()
1349
except (AttributeError, xml.dom.DOMException,
1350
xml.parsers.expat.ExpatError) as error:
1351
logger.error("Failed to override Introspection method",
1352
exc_info=error)
1353
return xmlstring
1354
1355
1356
class DBusObjectWithProperties(DBusObjectWithAnnotations):
616
1357
"""A D-Bus object with properties.
617
1358
618
1359
Classes inheriting from this can use the dbus_service_property
619
1360
decorator to expose methods as D-Bus properties. It exposes the
620
1361
standard Get(), Set(), and GetAll() methods on the D-Bus.
621
1362
"""
622
623
@staticmethod
624
def _is_dbus_property(obj):
625
return getattr(obj, "_dbus_is_property", False)
626
627
def _get_all_dbus_properties(self):
628
"""Returns a generator of (name, attribute) pairs
629
"""
630
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
631
for cls in self.__class__.__mro__
632
for name, prop in inspect.getmembers(cls, self._is_dbus_property))
633
1363
634
1364
def _get_dbus_property(self, interface_name, property_name):
635
1365
"""Returns a bound method if one exists which is a D-Bus
636
1366
property with the specified name and interface.
637
1367
"""
638
for cls in self.__class__.__mro__:
639
for name, value in inspect.getmembers(cls, self._is_dbus_property):
640
if value._dbus_name == property_name and value._dbus_interface == interface_name:
1368
for cls in self.__class__.__mro__:
1369
for name, value in inspect.getmembers(
1370
cls, self._is_dbus_thing("property")):
1371
if (value._dbus_name == property_name
1372
and value._dbus_interface == interface_name):
641
1373
return value.__get__(self)
642
1374
643
1375
# No such property
644
raise DBusPropertyNotFound(self.dbus_object_path + ":"
645
+ interface_name + "."
646
+ property_name)
647
648
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1376
raise DBusPropertyNotFound("{}:{}.{}".format(
1377
self.dbus_object_path, interface_name, property_name))
1378
1379
@classmethod
1380
def _get_all_interface_names(cls):
1381
"""Get a sequence of all interfaces supported by an object"""
1382
return (name for name in set(getattr(getattr(x, attr),
1383
"_dbus_interface", None)
1384
for x in (inspect.getmro(cls))
1385
for attr in dir(x))
1386
if name is not None)
1387
1388
@dbus.service.method(dbus.PROPERTIES_IFACE,
1389
in_signature="ss",
649
1390
out_signature="v")
650
1391
def Get(self, interface_name, property_name):
651
1392
"""Standard D-Bus property Get() method, see D-Bus standard.
657
1398
if not hasattr(value, "variant_level"):
658
1399
return value
659
1400
return type(value)(value, variant_level=value.variant_level+1)
660
1401
661
1402
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
662
1403
def Set(self, interface_name, property_name, value):
663
1404
"""Standard D-Bus property Set() method, see D-Bus standard.
669
1410
# The byte_arrays option is not supported yet on
670
1411
# signatures other than "ay".
671
1412
if prop._dbus_signature != "ay":
672
raise ValueError
673
value = dbus.ByteArray(''.join(unichr(byte)
674
for byte in value))
1413
raise ValueError("Byte arrays not supported for non-"
1414
"'ay' signature {!r}"
1415
.format(prop._dbus_signature))
1416
value = dbus.ByteArray(b''.join(chr(byte)
1417
for byte in value))
675
1418
prop(value)
676
677
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1419
1420
@dbus.service.method(dbus.PROPERTIES_IFACE,
1421
in_signature="s",
678
1422
out_signature="a{sv}")
679
1423
def GetAll(self, interface_name):
680
1424
"""Standard D-Bus property GetAll() method, see D-Bus
681
1425
standard.
682
1426
683
1427
Note: Will not include properties with access="write".
684
1428
"""
685
all = {}
686
for name, prop in self._get_all_dbus_properties():
1429
properties = {}
1430
for name, prop in self._get_all_dbus_things("property"):
687
1431
if (interface_name
688
1432
and interface_name != prop._dbus_interface):
689
1433
# Interface non-empty but did not match
693
1437
continue
694
1438
value = prop()
695
1439
if not hasattr(value, "variant_level"):
696
all[name] = value
1440
properties[name] = value
697
1441
continue
698
all[name] = type(value)(value, variant_level=
699
value.variant_level+1)
700
return dbus.Dictionary(all, signature="sv")
701
1442
properties[name] = type(value)(
1443
value, variant_level=value.variant_level + 1)
1444
return dbus.Dictionary(properties, signature="sv")
1445
1446
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1447
def PropertiesChanged(self, interface_name, changed_properties,
1448
invalidated_properties):
1449
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1450
standard.
1451
"""
1452
pass
1453
702
1454
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
703
1455
out_signature="s",
704
1456
path_keyword='object_path',
705
1457
connection_keyword='connection')
706
1458
def Introspect(self, object_path, connection):
707
"""Standard D-Bus method, overloaded to insert property tags.
1459
"""Overloading of standard D-Bus method.
1460
1461
Inserts property tags and interface annotation tags.
708
1462
"""
709
xmlstring = dbus.service.Object.Introspect(self, object_path,
710
connection)
1463
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1464
object_path,
1465
connection)
711
1466
try:
712
1467
document = xml.dom.minidom.parseString(xmlstring)
1468
713
1469
def make_tag(document, name, prop):
714
1470
e = document.createElement("property")
715
1471
e.setAttribute("name", name)
716
1472
e.setAttribute("type", prop._dbus_signature)
717
1473
e.setAttribute("access", prop._dbus_access)
718
1474
return e
1475
719
1476
for if_tag in document.getElementsByTagName("interface"):
1477
# Add property tags
720
1478
for tag in (make_tag(document, name, prop)
721
1479
for name, prop
722
in self._get_all_dbus_properties()
1480
in self._get_all_dbus_things("property")
723
1481
if prop._dbus_interface
724
1482
== if_tag.getAttribute("name")):
725
1483
if_tag.appendChild(tag)
1484
# Add annotation tags for properties
1485
for tag in if_tag.getElementsByTagName("property"):
1486
annots = dict()
1487
for name, prop in self._get_all_dbus_things(
1488
"property"):
1489
if (name == tag.getAttribute("name")
1490
and prop._dbus_interface
1491
== if_tag.getAttribute("name")):
1492
annots.update(getattr(
1493
prop, "_dbus_annotations", {}))
1494
for name, value in annots.items():
1495
ann_tag = document.createElement(
1496
"annotation")
1497
ann_tag.setAttribute("name", name)
1498
ann_tag.setAttribute("value", value)
1499
tag.appendChild(ann_tag)
726
1500
# Add the names to the return values for the
727
1501
# "org.freedesktop.DBus.Properties" methods
728
1502
if (if_tag.getAttribute("name")
743
1517
except (AttributeError, xml.dom.DOMException,
744
1518
xml.parsers.expat.ExpatError) as error:
745
1519
logger.error("Failed to override Introspection method",
746
error)
747
return xmlstring
748
749
750
def datetime_to_dbus (dt, variant_level=0):
1520
exc_info=error)
1521
return xmlstring
1522
1523
1524
try:
1525
dbus.OBJECT_MANAGER_IFACE
1526
except AttributeError:
1527
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1528
1529
1530
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1531
"""A D-Bus object with an ObjectManager.
1532
1533
Classes inheriting from this exposes the standard
1534
GetManagedObjects call and the InterfacesAdded and
1535
InterfacesRemoved signals on the standard
1536
"org.freedesktop.DBus.ObjectManager" interface.
1537
1538
Note: No signals are sent automatically; they must be sent
1539
manually.
1540
"""
1541
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1542
out_signature="a{oa{sa{sv}}}")
1543
def GetManagedObjects(self):
1544
"""This function must be overridden"""
1545
raise NotImplementedError()
1546
1547
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1548
signature="oa{sa{sv}}")
1549
def InterfacesAdded(self, object_path, interfaces_and_properties):
1550
pass
1551
1552
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1553
def InterfacesRemoved(self, object_path, interfaces):
1554
pass
1555
1556
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1557
out_signature="s",
1558
path_keyword='object_path',
1559
connection_keyword='connection')
1560
def Introspect(self, object_path, connection):
1561
"""Overloading of standard D-Bus method.
1562
1563
Override return argument name of GetManagedObjects to be
1564
"objpath_interfaces_and_properties"
1565
"""
1566
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1567
object_path,
1568
connection)
1569
try:
1570
document = xml.dom.minidom.parseString(xmlstring)
1571
1572
for if_tag in document.getElementsByTagName("interface"):
1573
# Fix argument name for the GetManagedObjects method
1574
if (if_tag.getAttribute("name")
1575
== dbus.OBJECT_MANAGER_IFACE):
1576
for cn in if_tag.getElementsByTagName("method"):
1577
if (cn.getAttribute("name")
1578
== "GetManagedObjects"):
1579
for arg in cn.getElementsByTagName("arg"):
1580
if (arg.getAttribute("direction")
1581
== "out"):
1582
arg.setAttribute(
1583
"name",
1584
"objpath_interfaces"
1585
"_and_properties")
1586
xmlstring = document.toxml("utf-8")
1587
document.unlink()
1588
except (AttributeError, xml.dom.DOMException,
1589
xml.parsers.expat.ExpatError) as error:
1590
logger.error("Failed to override Introspection method",
1591
exc_info=error)
1592
return xmlstring
1593
1594
1595
def datetime_to_dbus(dt, variant_level=0):
751
1596
"""Convert a UTC datetime.datetime() to a D-Bus type."""
752
1597
if dt is None:
753
return dbus.String("", variant_level = variant_level)
754
return dbus.String(dt.isoformat(),
755
variant_level=variant_level)
756
757
class transitional_dbus_metaclass(DBusObjectWithProperties.__metaclass__):
758
def __new__(mcs, name, bases, attr):
759
for attrname, old_dbusobj in inspect.getmembers(bases[0]):
760
new_interface = getattr(old_dbusobj, "_dbus_interface", "").replace("se.bsnet.fukt.", "se.recompile.")
761
if (getattr(old_dbusobj, "_dbus_is_signal", False)
762
and old_dbusobj._dbus_interface.startswith("se.bsnet.fukt.Mandos")):
763
unwrappedfunc = dict(zip(old_dbusobj.func_code.co_freevars,
764
old_dbusobj.__closure__))["func"].cell_contents
765
newfunc = types.FunctionType(unwrappedfunc.func_code,
766
unwrappedfunc.func_globals,
767
unwrappedfunc.func_name,
768
unwrappedfunc.func_defaults,
769
unwrappedfunc.func_closure)
770
new_dbusfunc = dbus.service.signal(
771
new_interface, old_dbusobj._dbus_signature)(newfunc)
772
attr["_transitional_" + attrname] = new_dbusfunc
773
774
def fixscope(func1, func2):
775
def newcall(*args, **kwargs):
776
func1(*args, **kwargs)
777
func2(*args, **kwargs)
778
return newcall
779
780
attr[attrname] = fixscope(old_dbusobj, new_dbusfunc)
781
782
elif (getattr(old_dbusobj, "_dbus_is_method", False)
783
and old_dbusobj._dbus_interface.startswith("se.bsnet.fukt.Mandos")):
784
new_dbusfunc = (dbus.service.method
785
(new_interface,
786
old_dbusobj._dbus_in_signature,
787
old_dbusobj._dbus_out_signature)
788
(types.FunctionType
789
(old_dbusobj.func_code,
790
old_dbusobj.func_globals,
791
old_dbusobj.func_name,
792
old_dbusobj.func_defaults,
793
old_dbusobj.func_closure)))
794
795
attr[attrname] = new_dbusfunc
796
elif (getattr(old_dbusobj, "_dbus_is_property", False)
797
and old_dbusobj._dbus_interface.startswith("se.bsnet.fukt.Mandos")):
798
new_dbusfunc = (dbus_service_property
799
(new_interface,
800
old_dbusobj._dbus_signature,
801
old_dbusobj._dbus_access,
802
old_dbusobj._dbus_get_args_options["byte_arrays"])
803
(types.FunctionType
804
(old_dbusobj.func_code,
805
old_dbusobj.func_globals,
806
old_dbusobj.func_name,
807
old_dbusobj.func_defaults,
808
old_dbusobj.func_closure)))
809
810
attr[attrname] = new_dbusfunc
811
return type.__new__(mcs, name, bases, attr)
812
1598
return dbus.String("", variant_level=variant_level)
1599
return dbus.String(dt.isoformat(), variant_level=variant_level)
1600
1601
1602
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1603
"""A class decorator; applied to a subclass of
1604
dbus.service.Object, it will add alternate D-Bus attributes with
1605
interface names according to the "alt_interface_names" mapping.
1606
Usage:
1607
1608
@alternate_dbus_interfaces({"org.example.Interface":
1609
"net.example.AlternateInterface"})
1610
class SampleDBusObject(dbus.service.Object):
1611
@dbus.service.method("org.example.Interface")
1612
def SampleDBusMethod():
1613
pass
1614
1615
The above "SampleDBusMethod" on "SampleDBusObject" will be
1616
reachable via two interfaces: "org.example.Interface" and
1617
"net.example.AlternateInterface", the latter of which will have
1618
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1619
"true", unless "deprecate" is passed with a False value.
1620
1621
This works for methods and signals, and also for D-Bus properties
1622
(from DBusObjectWithProperties) and interfaces (from the
1623
dbus_interface_annotations decorator).
1624
"""
1625
1626
def wrapper(cls):
1627
for orig_interface_name, alt_interface_name in (
1628
alt_interface_names.items()):
1629
attr = {}
1630
interface_names = set()
1631
# Go though all attributes of the class
1632
for attrname, attribute in inspect.getmembers(cls):
1633
# Ignore non-D-Bus attributes, and D-Bus attributes
1634
# with the wrong interface name
1635
if (not hasattr(attribute, "_dbus_interface")
1636
or not attribute._dbus_interface.startswith(
1637
orig_interface_name)):
1638
continue
1639
# Create an alternate D-Bus interface name based on
1640
# the current name
1641
alt_interface = attribute._dbus_interface.replace(
1642
orig_interface_name, alt_interface_name)
1643
interface_names.add(alt_interface)
1644
# Is this a D-Bus signal?
1645
if getattr(attribute, "_dbus_is_signal", False):
1646
# Extract the original non-method undecorated
1647
# function by black magic
1648
if sys.version_info.major == 2:
1649
nonmethod_func = (dict(
1650
zip(attribute.func_code.co_freevars,
1651
attribute.__closure__))
1652
["func"].cell_contents)
1653
else:
1654
nonmethod_func = (dict(
1655
zip(attribute.__code__.co_freevars,
1656
attribute.__closure__))
1657
["func"].cell_contents)
1658
# Create a new, but exactly alike, function
1659
# object, and decorate it to be a new D-Bus signal
1660
# with the alternate D-Bus interface name
1661
new_function = copy_function(nonmethod_func)
1662
new_function = (dbus.service.signal(
1663
alt_interface,
1664
attribute._dbus_signature)(new_function))
1665
# Copy annotations, if any
1666
try:
1667
new_function._dbus_annotations = dict(
1668
attribute._dbus_annotations)
1669
except AttributeError:
1670
pass
1671
1672
# Define a creator of a function to call both the
1673
# original and alternate functions, so both the
1674
# original and alternate signals gets sent when
1675
# the function is called
1676
def fixscope(func1, func2):
1677
"""This function is a scope container to pass
1678
func1 and func2 to the "call_both" function
1679
outside of its arguments"""
1680
1681
@functools.wraps(func2)
1682
def call_both(*args, **kwargs):
1683
"""This function will emit two D-Bus
1684
signals by calling func1 and func2"""
1685
func1(*args, **kwargs)
1686
func2(*args, **kwargs)
1687
# Make wrapper function look like a D-Bus
1688
# signal
1689
for name, attr in inspect.getmembers(func2):
1690
if name.startswith("_dbus_"):
1691
setattr(call_both, name, attr)
1692
1693
return call_both
1694
# Create the "call_both" function and add it to
1695
# the class
1696
attr[attrname] = fixscope(attribute, new_function)
1697
# Is this a D-Bus method?
1698
elif getattr(attribute, "_dbus_is_method", False):
1699
# Create a new, but exactly alike, function
1700
# object. Decorate it to be a new D-Bus method
1701
# with the alternate D-Bus interface name. Add it
1702
# to the class.
1703
attr[attrname] = (
1704
dbus.service.method(
1705
alt_interface,
1706
attribute._dbus_in_signature,
1707
attribute._dbus_out_signature)
1708
(copy_function(attribute)))
1709
# Copy annotations, if any
1710
try:
1711
attr[attrname]._dbus_annotations = dict(
1712
attribute._dbus_annotations)
1713
except AttributeError:
1714
pass
1715
# Is this a D-Bus property?
1716
elif getattr(attribute, "_dbus_is_property", False):
1717
# Create a new, but exactly alike, function
1718
# object, and decorate it to be a new D-Bus
1719
# property with the alternate D-Bus interface
1720
# name. Add it to the class.
1721
attr[attrname] = (dbus_service_property(
1722
alt_interface, attribute._dbus_signature,
1723
attribute._dbus_access,
1724
attribute._dbus_get_args_options
1725
["byte_arrays"])
1726
(copy_function(attribute)))
1727
# Copy annotations, if any
1728
try:
1729
attr[attrname]._dbus_annotations = dict(
1730
attribute._dbus_annotations)
1731
except AttributeError:
1732
pass
1733
# Is this a D-Bus interface?
1734
elif getattr(attribute, "_dbus_is_interface", False):
1735
# Create a new, but exactly alike, function
1736
# object. Decorate it to be a new D-Bus interface
1737
# with the alternate D-Bus interface name. Add it
1738
# to the class.
1739
attr[attrname] = (
1740
dbus_interface_annotations(alt_interface)
1741
(copy_function(attribute)))
1742
if deprecate:
1743
# Deprecate all alternate interfaces
1744
iname = "_AlternateDBusNames_interface_annotation{}"
1745
for interface_name in interface_names:
1746
1747
@dbus_interface_annotations(interface_name)
1748
def func(self):
1749
return {"org.freedesktop.DBus.Deprecated":
1750
"true"}
1751
# Find an unused name
1752
for aname in (iname.format(i)
1753
for i in itertools.count()):
1754
if aname not in attr:
1755
attr[aname] = func
1756
break
1757
if interface_names:
1758
# Replace the class with a new subclass of it with
1759
# methods, signals, etc. as created above.
1760
if sys.version_info.major == 2:
1761
cls = type(b"{}Alternate".format(cls.__name__),
1762
(cls, ), attr)
1763
else:
1764
cls = type("{}Alternate".format(cls.__name__),
1765
(cls, ), attr)
1766
return cls
1767
1768
return wrapper
1769
1770
1771
@alternate_dbus_interfaces({"se.recompile.Mandos":
1772
"se.bsnet.fukt.Mandos"})
813
1773
class ClientDBus(Client, DBusObjectWithProperties):
814
1774
"""A Client class using D-Bus
815
1775
816
1776
Attributes:
817
1777
dbus_object_path: dbus.ObjectPath
818
1778
bus: dbus.SystemBus()
819
1779
"""
820
1780
821
1781
runtime_expansions = (Client.runtime_expansions
822
+ ("dbus_object_path",))
823
1782
+ ("dbus_object_path", ))
1783
1784
_interface = "se.recompile.Mandos.Client"
1785
824
1786
# dbus.service.Object doesn't use super(), so we can't either.
825
826
def __init__(self, bus = None, *args, **kwargs):
827
self._approvals_pending = 0
1787
1788
def __init__(self, bus=None, *args, **kwargs):
828
1789
self.bus = bus
829
1790
Client.__init__(self, *args, **kwargs)
830
1791
# Only now, when this client is initialized, can it show up on
831
1792
# the D-Bus
832
client_object_name = unicode(self.name).translate(
1793
client_object_name = str(self.name).translate(
833
1794
{ord("."): ord("_"),
834
1795
ord("-"): ord("_")})
835
self.dbus_object_path = (dbus.ObjectPath
836
("/clients/" + client_object_name))
1796
self.dbus_object_path = dbus.ObjectPath(
1797
"/clients/" + client_object_name)
837
1798
DBusObjectWithProperties.__init__(self, self.bus,
838
1799
self.dbus_object_path)
839
840
def notifychangeproperty(transform_func,
841
dbus_name, type_func=lambda x: x,
842
variant_level=1):
843
""" Modify a variable so that its a property that announce its
844
changes to DBus.
845
transform_fun: Function that takes a value and transform it to
846
DBus type.
847
dbus_name: DBus name of the variable
1800
1801
def notifychangeproperty(transform_func, dbus_name,
1802
type_func=lambda x: x,
1803
variant_level=1,
1804
invalidate_only=False,
1805
_interface=_interface):
1806
""" Modify a variable so that it's a property which announces
1807
its changes to DBus.
1808
1809
transform_fun: Function that takes a value and a variant_level
1810
and transforms it to a D-Bus type.
1811
dbus_name: D-Bus name of the variable
848
1812
type_func: Function that transform the value before sending it
849
to DBus
850
variant_level: DBus variant level. default: 1
1813
to the D-Bus. Default: no transform
1814
variant_level: D-Bus variant level. Default: 1
851
1815
"""
852
real_value = [None,]
1816
attrname = "_{}".format(dbus_name)
1817
853
1818
def setter(self, value):
854
old_value = real_value[0]
855
real_value[0] = value
856
1819
if hasattr(self, "dbus_object_path"):
857
if type_func(old_value) != type_func(real_value[0]):
858
dbus_value = transform_func(type_func(real_value[0]),
859
variant_level)
860
self.PropertyChanged(dbus.String(dbus_name),
861
dbus_value)
862
863
return property(lambda self: real_value[0], setter)
864
865
1820
if (not hasattr(self, attrname) or
1821
type_func(getattr(self, attrname, None))
1822
!= type_func(value)):
1823
if invalidate_only:
1824
self.PropertiesChanged(
1825
_interface, dbus.Dictionary(),
1826
dbus.Array((dbus_name, )))
1827
else:
1828
dbus_value = transform_func(
1829
type_func(value),
1830
variant_level=variant_level)
1831
self.PropertyChanged(dbus.String(dbus_name),
1832
dbus_value)
1833
self.PropertiesChanged(
1834
_interface,
1835
dbus.Dictionary({dbus.String(dbus_name):
1836
dbus_value}),
1837
dbus.Array())
1838
setattr(self, attrname, value)
1839
1840
return property(lambda self: getattr(self, attrname), setter)
1841
866
1842
expires = notifychangeproperty(datetime_to_dbus, "Expires")
867
1843
approvals_pending = notifychangeproperty(dbus.Boolean,
868
1844
"ApprovalPending",
869
type_func = bool)
1845
type_func=bool)
870
1846
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
871
1847
last_enabled = notifychangeproperty(datetime_to_dbus,
872
1848
"LastEnabled")
873
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
874
type_func = lambda checker: checker is not None)
1849
checker = notifychangeproperty(
1850
dbus.Boolean, "CheckerRunning",
1851
type_func=lambda checker: checker is not None)
875
1852
last_checked_ok = notifychangeproperty(datetime_to_dbus,
876
1853
"LastCheckedOK")
877
last_approval_request = notifychangeproperty(datetime_to_dbus,
878
"LastApprovalRequest")
1854
last_checker_status = notifychangeproperty(dbus.Int16,
1855
"LastCheckerStatus")
1856
last_approval_request = notifychangeproperty(
1857
datetime_to_dbus, "LastApprovalRequest")
879
1858
approved_by_default = notifychangeproperty(dbus.Boolean,
880
1859
"ApprovedByDefault")
881
approval_delay = notifychangeproperty(dbus.UInt16, "ApprovalDelay",
882
type_func = _timedelta_to_milliseconds)
883
approval_duration = notifychangeproperty(dbus.UInt16, "ApprovalDuration",
884
type_func = _timedelta_to_milliseconds)
1860
approval_delay = notifychangeproperty(
1861
dbus.UInt64, "ApprovalDelay",
1862
type_func=lambda td: td.total_seconds() * 1000)
1863
approval_duration = notifychangeproperty(
1864
dbus.UInt64, "ApprovalDuration",
1865
type_func=lambda td: td.total_seconds() * 1000)
885
1866
host = notifychangeproperty(dbus.String, "Host")
886
timeout = notifychangeproperty(dbus.UInt16, "Timeout",
887
type_func = _timedelta_to_milliseconds)
888
extended_timeout = notifychangeproperty(dbus.UInt16, "ExtendedTimeout",
889
type_func = _timedelta_to_milliseconds)
890
interval = notifychangeproperty(dbus.UInt16, "Interval",
891
type_func = _timedelta_to_milliseconds)
1867
timeout = notifychangeproperty(
1868
dbus.UInt64, "Timeout",
1869
type_func=lambda td: td.total_seconds() * 1000)
1870
extended_timeout = notifychangeproperty(
1871
dbus.UInt64, "ExtendedTimeout",
1872
type_func=lambda td: td.total_seconds() * 1000)
1873
interval = notifychangeproperty(
1874
dbus.UInt64, "Interval",
1875
type_func=lambda td: td.total_seconds() * 1000)
892
1876
checker_command = notifychangeproperty(dbus.String, "Checker")
893
1877
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1878
invalidate_only=True)
1879
894
1880
del notifychangeproperty
895
1881
896
1882
def __del__(self, *args, **kwargs):
897
1883
try:
898
1884
self.remove_from_connection()
901
1887
if hasattr(DBusObjectWithProperties, "__del__"):
902
1888
DBusObjectWithProperties.__del__(self, *args, **kwargs)
903
1889
Client.__del__(self, *args, **kwargs)
904
905
def checker_callback(self, pid, condition, command,
906
*args, **kwargs):
907
self.checker_callback_tag = None
908
self.checker = None
909
if os.WIFEXITED(condition):
910
exitstatus = os.WEXITSTATUS(condition)
1890
1891
def checker_callback(self, source, condition,
1892
connection, command, *args, **kwargs):
1893
ret = Client.checker_callback(self, source, condition,
1894
connection, command, *args,
1895
**kwargs)
1896
exitstatus = self.last_checker_status
1897
if exitstatus >= 0:
911
1898
# Emit D-Bus signal
912
1899
self.CheckerCompleted(dbus.Int16(exitstatus),
913
dbus.Int64(condition),
1900
# This is specific to GNU libC
1901
dbus.Int64(exitstatus << 8),
914
1902
dbus.String(command))
915
1903
else:
916
1904
# Emit D-Bus signal
917
1905
self.CheckerCompleted(dbus.Int16(-1),
918
dbus.Int64(condition),
1906
dbus.Int64(
1907
# This is specific to GNU libC
1908
(exitstatus << 8)
1909
| self.last_checker_signal),
919
1910
dbus.String(command))
920
921
return Client.checker_callback(self, pid, condition, command,
922
*args, **kwargs)
923
1911
return ret
1912
924
1913
def start_checker(self, *args, **kwargs):
925
old_checker = self.checker
926
if self.checker is not None:
927
old_checker_pid = self.checker.pid
928
else:
929
old_checker_pid = None
1914
old_checker_pid = getattr(self.checker, "pid", None)
930
1915
r = Client.start_checker(self, *args, **kwargs)
931
1916
# Only if new checker process was started
932
1917
if (self.checker is not None
934
1919
# Emit D-Bus signal
935
1920
self.CheckerStarted(self.current_checker_command)
936
1921
return r
937
1922
938
1923
def _reset_approved(self):
939
self._approved = None
1924
self.approved = None
940
1925
return False
941
1926
942
1927
def approve(self, value=True):
1928
self.approved = value
1929
GLib.timeout_add(int(self.approval_duration.total_seconds()
1930
* 1000), self._reset_approved)
943
1931
self.send_changedstate()
944
self._approved = value
945
gobject.timeout_add(_timedelta_to_milliseconds
946
(self.approval_duration),
947
self._reset_approved)
948
949
950
## D-Bus methods, signals & properties
951
_interface = "se.bsnet.fukt.Mandos.Client"
952
953
## Signals
954
1932
1933
# D-Bus methods, signals & properties
1934
1935
# Interfaces
1936
1937
# Signals
1938
955
1939
# CheckerCompleted - signal
956
1940
@dbus.service.signal(_interface, signature="nxs")
957
1941
def CheckerCompleted(self, exitcode, waitstatus, command):
958
1942
"D-Bus signal"
959
1943
pass
960
1944
961
1945
# CheckerStarted - signal
962
1946
@dbus.service.signal(_interface, signature="s")
963
1947
def CheckerStarted(self, command):
964
1948
"D-Bus signal"
965
1949
pass
966
1950
967
1951
# PropertyChanged - signal
1952
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
968
1953
@dbus.service.signal(_interface, signature="sv")
969
1954
def PropertyChanged(self, property, value):
970
1955
"D-Bus signal"
971
1956
pass
972
1957
973
1958
# GotSecret - signal
974
1959
@dbus.service.signal(_interface)
975
1960
def GotSecret(self):
978
1963
server to mandos-client
979
1964
"""
980
1965
pass
981
1966
982
1967
# Rejected - signal
983
1968
@dbus.service.signal(_interface, signature="s")
984
1969
def Rejected(self, reason):
985
1970
"D-Bus signal"
986
1971
pass
987
1972
988
1973
# NeedApproval - signal
989
1974
@dbus.service.signal(_interface, signature="tb")
990
1975
def NeedApproval(self, timeout, default):
991
1976
"D-Bus signal"
992
1977
return self.need_approval()
993
994
## Methods
995
1978
1979
# Methods
1980
996
1981
# Approve - method
997
1982
@dbus.service.method(_interface, in_signature="b")
998
1983
def Approve(self, value):
999
1984
self.approve(value)
1000
1985
1001
1986
# CheckedOK - method
1002
1987
@dbus.service.method(_interface)
1003
1988
def CheckedOK(self):
1004
1989
self.checked_ok()
1005
1990
1006
1991
# Enable - method
1992
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1007
1993
@dbus.service.method(_interface)
1008
1994
def Enable(self):
1009
1995
"D-Bus method"
1010
1996
self.enable()
1011
1997
1012
1998
# StartChecker - method
1999
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1013
2000
@dbus.service.method(_interface)
1014
2001
def StartChecker(self):
1015
2002
"D-Bus method"
1016
2003
self.start_checker()
1017
2004
1018
2005
# Disable - method
2006
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1019
2007
@dbus.service.method(_interface)
1020
2008
def Disable(self):
1021
2009
"D-Bus method"
1022
2010
self.disable()
1023
2011
1024
2012
# StopChecker - method
2013
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1025
2014
@dbus.service.method(_interface)
1026
2015
def StopChecker(self):
1027
2016
self.stop_checker()
1028
1029
## Properties
1030
2017
2018
# Properties
2019
1031
2020
# ApprovalPending - property
1032
2021
@dbus_service_property(_interface, signature="b", access="read")
1033
2022
def ApprovalPending_dbus_property(self):
1034
2023
return dbus.Boolean(bool(self.approvals_pending))
1035
2024
1036
2025
# ApprovedByDefault - property
1037
@dbus_service_property(_interface, signature="b",
2026
@dbus_service_property(_interface,
2027
signature="b",
1038
2028
access="readwrite")
1039
2029
def ApprovedByDefault_dbus_property(self, value=None):
1040
2030
if value is None: # get
1041
2031
return dbus.Boolean(self.approved_by_default)
1042
2032
self.approved_by_default = bool(value)
1043
2033
1044
2034
# ApprovalDelay - property
1045
@dbus_service_property(_interface, signature="t",
2035
@dbus_service_property(_interface,
2036
signature="t",
1046
2037
access="readwrite")
1047
2038
def ApprovalDelay_dbus_property(self, value=None):
1048
2039
if value is None: # get
1049
return dbus.UInt64(self.approval_delay_milliseconds())
2040
return dbus.UInt64(self.approval_delay.total_seconds()
2041
* 1000)
1050
2042
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1051
2043
1052
2044
# ApprovalDuration - property
1053
@dbus_service_property(_interface, signature="t",
2045
@dbus_service_property(_interface,
2046
signature="t",
1054
2047
access="readwrite")
1055
2048
def ApprovalDuration_dbus_property(self, value=None):
1056
2049
if value is None: # get
1057
return dbus.UInt64(_timedelta_to_milliseconds(
1058
self.approval_duration))
2050
return dbus.UInt64(self.approval_duration.total_seconds()
2051
* 1000)
1059
2052
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1060
2053
1061
2054
# Name - property
2055
@dbus_annotations(
2056
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1062
2057
@dbus_service_property(_interface, signature="s", access="read")
1063
2058
def Name_dbus_property(self):
1064
2059
return dbus.String(self.name)
1065
2060
2061
# KeyID - property
2062
@dbus_annotations(
2063
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2064
@dbus_service_property(_interface, signature="s", access="read")
2065
def KeyID_dbus_property(self):
2066
return dbus.String(self.key_id)
2067
1066
2068
# Fingerprint - property
2069
@dbus_annotations(
2070
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1067
2071
@dbus_service_property(_interface, signature="s", access="read")
1068
2072
def Fingerprint_dbus_property(self):
1069
2073
return dbus.String(self.fingerprint)
1070
2074
1071
2075
# Host - property
1072
@dbus_service_property(_interface, signature="s",
2076
@dbus_service_property(_interface,
2077
signature="s",
1073
2078
access="readwrite")
1074
2079
def Host_dbus_property(self, value=None):
1075
2080
if value is None: # get
1076
2081
return dbus.String(self.host)
1077
self.host = value
1078
2082
self.host = str(value)
2083
1079
2084
# Created - property
2085
@dbus_annotations(
2086
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1080
2087
@dbus_service_property(_interface, signature="s", access="read")
1081
2088
def Created_dbus_property(self):
1082
return dbus.String(datetime_to_dbus(self.created))
1083
2089
return datetime_to_dbus(self.created)
2090
1084
2091
# LastEnabled - property
1085
2092
@dbus_service_property(_interface, signature="s", access="read")
1086
2093
def LastEnabled_dbus_property(self):
1087
2094
return datetime_to_dbus(self.last_enabled)
1088
2095
1089
2096
# Enabled - property
1090
@dbus_service_property(_interface, signature="b",
2097
@dbus_service_property(_interface,
2098
signature="b",
1091
2099
access="readwrite")
1092
2100
def Enabled_dbus_property(self, value=None):
1093
2101
if value is None: # get
1096
2104
self.enable()
1097
2105
else:
1098
2106
self.disable()
1099
2107
1100
2108
# LastCheckedOK - property
1101
@dbus_service_property(_interface, signature="s",
2109
@dbus_service_property(_interface,
2110
signature="s",
1102
2111
access="readwrite")
1103
2112
def LastCheckedOK_dbus_property(self, value=None):
1104
2113
if value is not None:
1105
2114
self.checked_ok()
1106
2115
return
1107
2116
return datetime_to_dbus(self.last_checked_ok)
1108
2117
2118
# LastCheckerStatus - property
2119
@dbus_service_property(_interface, signature="n", access="read")
2120
def LastCheckerStatus_dbus_property(self):
2121
return dbus.Int16(self.last_checker_status)
2122
1109
2123
# Expires - property
1110
2124
@dbus_service_property(_interface, signature="s", access="read")
1111
2125
def Expires_dbus_property(self):
1112
2126
return datetime_to_dbus(self.expires)
1113
2127
1114
2128
# LastApprovalRequest - property
1115
2129
@dbus_service_property(_interface, signature="s", access="read")
1116
2130
def LastApprovalRequest_dbus_property(self):
1117
2131
return datetime_to_dbus(self.last_approval_request)
1118
2132
1119
2133
# Timeout - property
1120
@dbus_service_property(_interface, signature="t",
2134
@dbus_service_property(_interface,
2135
signature="t",
1121
2136
access="readwrite")
1122
2137
def Timeout_dbus_property(self, value=None):
1123
2138
if value is None: # get
1124
return dbus.UInt64(self.timeout_milliseconds())
2139
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2140
old_timeout = self.timeout
1125
2141
self.timeout = datetime.timedelta(0, 0, 0, value)
1126
if getattr(self, "disable_initiator_tag", None) is None:
1127
return
1128
# Reschedule timeout
1129
gobject.source_remove(self.disable_initiator_tag)
1130
self.disable_initiator_tag = None
1131
self.expires = None
1132
time_to_die = (self.
1133
_timedelta_to_milliseconds((self
1134
.last_checked_ok
1135
+ self.timeout)
1136
- datetime.datetime
1137
.utcnow()))
1138
if time_to_die <= 0:
1139
# The timeout has passed
1140
self.disable()
1141
else:
1142
self.expires = (datetime.datetime.utcnow()
1143
+ datetime.timedelta(milliseconds = time_to_die))
1144
self.disable_initiator_tag = (gobject.timeout_add
1145
(time_to_die, self.disable))
1146
2142
# Reschedule disabling
2143
if self.enabled:
2144
now = datetime.datetime.utcnow()
2145
self.expires += self.timeout - old_timeout
2146
if self.expires <= now:
2147
# The timeout has passed
2148
self.disable()
2149
else:
2150
if (getattr(self, "disable_initiator_tag", None)
2151
is None):
2152
return
2153
GLib.source_remove(self.disable_initiator_tag)
2154
self.disable_initiator_tag = GLib.timeout_add(
2155
int((self.expires - now).total_seconds() * 1000),
2156
self.disable)
2157
1147
2158
# ExtendedTimeout - property
1148
@dbus_service_property(_interface, signature="t",
2159
@dbus_service_property(_interface,
2160
signature="t",
1149
2161
access="readwrite")
1150
2162
def ExtendedTimeout_dbus_property(self, value=None):
1151
2163
if value is None: # get
1152
return dbus.UInt64(self.extended_timeout_milliseconds())
2164
return dbus.UInt64(self.extended_timeout.total_seconds()
2165
* 1000)
1153
2166
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1154
2167
1155
2168
# Interval - property
1156
@dbus_service_property(_interface, signature="t",
2169
@dbus_service_property(_interface,
2170
signature="t",
1157
2171
access="readwrite")
1158
2172
def Interval_dbus_property(self, value=None):
1159
2173
if value is None: # get
1160
return dbus.UInt64(self.interval_milliseconds())
2174
return dbus.UInt64(self.interval.total_seconds() * 1000)
1161
2175
self.interval = datetime.timedelta(0, 0, 0, value)
1162
2176
if getattr(self, "checker_initiator_tag", None) is None:
1163
2177
return
1164
# Reschedule checker run
1165
gobject.source_remove(self.checker_initiator_tag)
1166
self.checker_initiator_tag = (gobject.timeout_add
1167
(value, self.start_checker))
1168
self.start_checker() # Start one now, too
1169
2178
if self.enabled:
2179
# Reschedule checker run
2180
GLib.source_remove(self.checker_initiator_tag)
2181
self.checker_initiator_tag = GLib.timeout_add(
2182
value, self.start_checker)
2183
self.start_checker() # Start one now, too
2184
1170
2185
# Checker - property
1171
@dbus_service_property(_interface, signature="s",
2186
@dbus_service_property(_interface,
2187
signature="s",
1172
2188
access="readwrite")
1173
2189
def Checker_dbus_property(self, value=None):
1174
2190
if value is None: # get
1175
2191
return dbus.String(self.checker_command)
1176
self.checker_command = value
1177
2192
self.checker_command = str(value)
2193
1178
2194
# CheckerRunning - property
1179
@dbus_service_property(_interface, signature="b",
2195
@dbus_service_property(_interface,
2196
signature="b",
1180
2197
access="readwrite")
1181
2198
def CheckerRunning_dbus_property(self, value=None):
1182
2199
if value is None: # get
1185
2202
self.start_checker()
1186
2203
else:
1187
2204
self.stop_checker()
1188
2205
1189
2206
# ObjectPath - property
2207
@dbus_annotations(
2208
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2209
"org.freedesktop.DBus.Deprecated": "true"})
1190
2210
@dbus_service_property(_interface, signature="o", access="read")
1191
2211
def ObjectPath_dbus_property(self):
1192
return self.dbus_object_path # is already a dbus.ObjectPath
1193
2212
return self.dbus_object_path # is already a dbus.ObjectPath
2213
1194
2214
# Secret = property
1195
@dbus_service_property(_interface, signature="ay",
1196
access="write", byte_arrays=True)
2215
@dbus_annotations(
2216
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2217
"invalidates"})
2218
@dbus_service_property(_interface,
2219
signature="ay",
2220
access="write",
2221
byte_arrays=True)
1197
2222
def Secret_dbus_property(self, value):
1198
self.secret = str(value)
1199
2223
self.secret = bytes(value)
2224
1200
2225
del _interface
1201
2226
1202
2227
1203
class ProxyClient(object):
1204
def __init__(self, child_pipe, fpr, address):
2228
class ProxyClient:
2229
def __init__(self, child_pipe, key_id, fpr, address):
1205
2230
self._pipe = child_pipe
1206
self._pipe.send(('init', fpr, address))
2231
self._pipe.send(('init', key_id, fpr, address))
1207
2232
if not self._pipe.recv():
1208
raise KeyError()
1209
2233
raise KeyError(key_id or fpr)
2234
1210
2235
def __getattribute__(self, name):
1211
if(name == '_pipe'):
2236
if name == '_pipe':
1212
2237
return super(ProxyClient, self).__getattribute__(name)
1213
2238
self._pipe.send(('getattr', name))
1214
2239
data = self._pipe.recv()
1215
2240
if data[0] == 'data':
1216
2241
return data[1]
1217
2242
if data[0] == 'function':
2243
1218
2244
def func(*args, **kwargs):
1219
2245
self._pipe.send(('funcall', name, args, kwargs))
1220
2246
return self._pipe.recv()[1]
2247
1221
2248
return func
1222
2249
1223
2250
def __setattr__(self, name, value):
1224
if(name == '_pipe'):
2251
if name == '_pipe':
1225
2252
return super(ProxyClient, self).__setattr__(name, value)
1226
2253
self._pipe.send(('setattr', name, value))
1227
2254
1228
class ClientDBusTransitional(ClientDBus):
1229
__metaclass__ = transitional_dbus_metaclass
1230
2255
1231
2256
class ClientHandler(socketserver.BaseRequestHandler, object):
1232
2257
"""A class to handle client connections.
1233
2258
1234
2259
Instantiated once for each connection to handle it.
1235
2260
Note: This will run in its own forked process."""
1236
2261
1237
2262
def handle(self):
1238
2263
with contextlib.closing(self.server.child_pipe) as child_pipe:
1239
2264
logger.info("TCP connection from: %s",
1240
unicode(self.client_address))
2265
str(self.client_address))
1241
2266
logger.debug("Pipe FD: %d",
1242
2267
self.server.child_pipe.fileno())
1243
1244
session = (gnutls.connection
1245
.ClientSession(self.request,
1246
gnutls.connection
1247
.X509Credentials()))
1248
1249
# Note: gnutls.connection.X509Credentials is really a
1250
# generic GnuTLS certificate credentials object so long as
1251
# no X.509 keys are added to it. Therefore, we can use it
1252
# here despite using OpenPGP certificates.
1253
1254
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1255
# "+AES-256-CBC", "+SHA1",
1256
# "+COMP-NULL", "+CTYPE-OPENPGP",
1257
# "+DHE-DSS"))
2268
2269
session = gnutls.ClientSession(self.request)
2270
2271
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2272
# "+AES-256-CBC", "+SHA1",
2273
# "+COMP-NULL", "+CTYPE-OPENPGP",
2274
# "+DHE-DSS"))
1258
2275
# Use a fallback default, since this MUST be set.
1259
2276
priority = self.server.gnutls_priority
1260
2277
if priority is None:
1261
2278
priority = "NORMAL"
1262
(gnutls.library.functions
1263
.gnutls_priority_set_direct(session._c_object,
1264
priority, None))
1265
2279
gnutls.priority_set_direct(session._c_object,
2280
priority.encode("utf-8"),
2281
None)
2282
1266
2283
# Start communication using the Mandos protocol
1267
2284
# Get protocol number
1268
2285
line = self.request.makefile().readline()
1269
2286
logger.debug("Protocol version: %r", line)
1270
2287
try:
1271
2288
if int(line.strip().split()[0]) > 1:
1272
raise RuntimeError
2289
raise RuntimeError(line)
1273
2290
except (ValueError, IndexError, RuntimeError) as error:
1274
2291
logger.error("Unknown protocol version: %s", error)
1275
2292
return
1276
2293
1277
2294
# Start GnuTLS connection
1278
2295
try:
1279
2296
session.handshake()
1280
except gnutls.errors.GNUTLSError as error:
2297
except gnutls.Error as error:
1281
2298
logger.warning("Handshake failed: %s", error)
1282
2299
# Do not run session.bye() here: the session is not
1283
2300
# established. Just abandon the request.
1284
2301
return
1285
2302
logger.debug("Handshake succeeded")
1286
2303
1287
2304
approval_required = False
1288
2305
try:
1289
try:
1290
fpr = self.fingerprint(self.peer_certificate
1291
(session))
1292
except (TypeError,
1293
gnutls.errors.GNUTLSError) as error:
1294
logger.warning("Bad certificate: %s", error)
1295
return
1296
logger.debug("Fingerprint: %s", fpr)
1297
1298
try:
1299
client = ProxyClient(child_pipe, fpr,
2306
if gnutls.has_rawpk:
2307
fpr = b""
2308
try:
2309
key_id = self.key_id(
2310
self.peer_certificate(session))
2311
except (TypeError, gnutls.Error) as error:
2312
logger.warning("Bad certificate: %s", error)
2313
return
2314
logger.debug("Key ID: %s", key_id)
2315
2316
else:
2317
key_id = b""
2318
try:
2319
fpr = self.fingerprint(
2320
self.peer_certificate(session))
2321
except (TypeError, gnutls.Error) as error:
2322
logger.warning("Bad certificate: %s", error)
2323
return
2324
logger.debug("Fingerprint: %s", fpr)
2325
2326
try:
2327
client = ProxyClient(child_pipe, key_id, fpr,
1300
2328
self.client_address)
1301
2329
except KeyError:
1302
2330
return
1303
2331
1304
2332
if client.approval_delay:
1305
2333
delay = client.approval_delay
1306
2334
client.approvals_pending += 1
1307
2335
approval_required = True
1308
2336
1309
2337
while True:
1310
2338
if not client.enabled:
1311
2339
logger.info("Client %s is disabled",
1312
client.name)
2340
client.name)
1313
2341
if self.server.use_dbus:
1314
2342
# Emit D-Bus signal
1315
client.Rejected("Disabled")
2343
client.Rejected("Disabled")
1316
2344
return
1317
1318
if client._approved or not client.approval_delay:
1319
#We are approved or approval is disabled
2345
2346
if client.approved or not client.approval_delay:
2347
# We are approved or approval is disabled
1320
2348
break
1321
elif client._approved is None:
2349
elif client.approved is None:
1322
2350
logger.info("Client %s needs approval",
1323
2351
client.name)
1324
2352
if self.server.use_dbus:
1325
2353
# Emit D-Bus signal
1326
2354
client.NeedApproval(
1327
client.approval_delay_milliseconds(),
1328
client.approved_by_default)
2355
client.approval_delay.total_seconds()
2356
* 1000, client.approved_by_default)
1329
2357
else:
1330
2358
logger.warning("Client %s was not approved",
1331
2359
client.name)
1333
2361
# Emit D-Bus signal
1334
2362
client.Rejected("Denied")
1335
2363
return
1336
1337
#wait until timeout or approved
1338
#x = float(client._timedelta_to_milliseconds(delay))
2364
2365
# wait until timeout or approved
1339
2366
time = datetime.datetime.now()
1340
2367
client.changedstate.acquire()
1341
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
2368
client.changedstate.wait(delay.total_seconds())
1342
2369
client.changedstate.release()
1343
2370
time2 = datetime.datetime.now()
1344
2371
if (time2 - time) >= delay:
1354
2381
break
1355
2382
else:
1356
2383
delay -= time2 - time
1357
1358
sent_size = 0
1359
while sent_size < len(client.secret):
1360
try:
1361
sent = session.send(client.secret[sent_size:])
1362
except gnutls.errors.GNUTLSError as error:
1363
logger.warning("gnutls send failed")
1364
return
1365
logger.debug("Sent: %d, remaining: %d",
1366
sent, len(client.secret)
1367
- (sent_size + sent))
1368
sent_size += sent
1369
2384
2385
try:
2386
session.send(client.secret)
2387
except gnutls.Error as error:
2388
logger.warning("gnutls send failed",
2389
exc_info=error)
2390
return
2391
1370
2392
logger.info("Sending secret to %s", client.name)
1371
# bump the timeout as if seen
1372
client.checked_ok(client.extended_timeout)
2393
# bump the timeout using extended_timeout
2394
client.bump_timeout(client.extended_timeout)
1373
2395
if self.server.use_dbus:
1374
2396
# Emit D-Bus signal
1375
2397
client.GotSecret()
1376
2398
1377
2399
finally:
1378
2400
if approval_required:
1379
2401
client.approvals_pending -= 1
1380
2402
try:
1381
2403
session.bye()
1382
except gnutls.errors.GNUTLSError as error:
1383
logger.warning("GnuTLS bye failed")
1384
2404
except gnutls.Error as error:
2405
logger.warning("GnuTLS bye failed",
2406
exc_info=error)
2407
1385
2408
@staticmethod
1386
2409
def peer_certificate(session):
1387
"Return the peer's OpenPGP certificate as a bytestring"
1388
# If not an OpenPGP certificate...
1389
if (gnutls.library.functions
1390
.gnutls_certificate_type_get(session._c_object)
1391
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1392
# ...do the normal thing
1393
return session.peer_certificate
2410
"Return the peer's certificate as a bytestring"
2411
try:
2412
cert_type = gnutls.certificate_type_get2(session._c_object,
2413
gnutls.CTYPE_PEERS)
2414
except AttributeError:
2415
cert_type = gnutls.certificate_type_get(session._c_object)
2416
if gnutls.has_rawpk:
2417
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2418
else:
2419
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2420
# If not a valid certificate type...
2421
if cert_type not in valid_cert_types:
2422
logger.info("Cert type %r not in %r", cert_type,
2423
valid_cert_types)
2424
# ...return invalid data
2425
return b""
1394
2426
list_size = ctypes.c_uint(1)
1395
cert_list = (gnutls.library.functions
1396
.gnutls_certificate_get_peers
2427
cert_list = (gnutls.certificate_get_peers
1397
2428
(session._c_object, ctypes.byref(list_size)))
1398
2429
if not bool(cert_list) and list_size.value != 0:
1399
raise gnutls.errors.GNUTLSError("error getting peer"
1400
" certificate")
2430
raise gnutls.Error("error getting peer certificate")
1401
2431
if list_size.value == 0:
1402
2432
return None
1403
2433
cert = cert_list[0]
1404
2434
return ctypes.string_at(cert.data, cert.size)
1405
2435
2436
@staticmethod
2437
def key_id(certificate):
2438
"Convert a certificate bytestring to a hexdigit key ID"
2439
# New GnuTLS "datum" with the public key
2440
datum = gnutls.datum_t(
2441
ctypes.cast(ctypes.c_char_p(certificate),
2442
ctypes.POINTER(ctypes.c_ubyte)),
2443
ctypes.c_uint(len(certificate)))
2444
# XXX all these need to be created in the gnutls "module"
2445
# New empty GnuTLS certificate
2446
pubkey = gnutls.pubkey_t()
2447
gnutls.pubkey_init(ctypes.byref(pubkey))
2448
# Import the raw public key into the certificate
2449
gnutls.pubkey_import(pubkey,
2450
ctypes.byref(datum),
2451
gnutls.X509_FMT_DER)
2452
# New buffer for the key ID
2453
buf = ctypes.create_string_buffer(32)
2454
buf_len = ctypes.c_size_t(len(buf))
2455
# Get the key ID from the raw public key into the buffer
2456
gnutls.pubkey_get_key_id(pubkey,
2457
gnutls.KEYID_USE_SHA256,
2458
ctypes.cast(ctypes.byref(buf),
2459
ctypes.POINTER(ctypes.c_ubyte)),
2460
ctypes.byref(buf_len))
2461
# Deinit the certificate
2462
gnutls.pubkey_deinit(pubkey)
2463
2464
# Convert the buffer to a Python bytestring
2465
key_id = ctypes.string_at(buf, buf_len.value)
2466
# Convert the bytestring to hexadecimal notation
2467
hex_key_id = binascii.hexlify(key_id).upper()
2468
return hex_key_id
2469
1406
2470
@staticmethod
1407
2471
def fingerprint(openpgp):
1408
2472
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1409
2473
# New GnuTLS "datum" with the OpenPGP public key
1410
datum = (gnutls.library.types
1411
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1412
ctypes.POINTER
1413
(ctypes.c_ubyte)),
1414
ctypes.c_uint(len(openpgp))))
2474
datum = gnutls.datum_t(
2475
ctypes.cast(ctypes.c_char_p(openpgp),
2476
ctypes.POINTER(ctypes.c_ubyte)),
2477
ctypes.c_uint(len(openpgp)))
1415
2478
# New empty GnuTLS certificate
1416
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1417
(gnutls.library.functions
1418
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2479
crt = gnutls.openpgp_crt_t()
2480
gnutls.openpgp_crt_init(ctypes.byref(crt))
1419
2481
# Import the OpenPGP public key into the certificate
1420
(gnutls.library.functions
1421
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1422
gnutls.library.constants
1423
.GNUTLS_OPENPGP_FMT_RAW))
2482
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2483
gnutls.OPENPGP_FMT_RAW)
1424
2484
# Verify the self signature in the key
1425
2485
crtverify = ctypes.c_uint()
1426
(gnutls.library.functions
1427
.gnutls_openpgp_crt_verify_self(crt, 0,
1428
ctypes.byref(crtverify)))
2486
gnutls.openpgp_crt_verify_self(crt, 0,
2487
ctypes.byref(crtverify))
1429
2488
if crtverify.value != 0:
1430
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1431
raise (gnutls.errors.CertificateSecurityError
1432
("Verify failed"))
2489
gnutls.openpgp_crt_deinit(crt)
2490
raise gnutls.CertificateSecurityError(code
2491
=crtverify.value)
1433
2492
# New buffer for the fingerprint
1434
2493
buf = ctypes.create_string_buffer(20)
1435
2494
buf_len = ctypes.c_size_t()
1436
2495
# Get the fingerprint from the certificate into the buffer
1437
(gnutls.library.functions
1438
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1439
ctypes.byref(buf_len)))
2496
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2497
ctypes.byref(buf_len))
1440
2498
# Deinit the certificate
1441
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2499
gnutls.openpgp_crt_deinit(crt)
1442
2500
# Convert the buffer to a Python bytestring
1443
2501
fpr = ctypes.string_at(buf, buf_len.value)
1444
2502
# Convert the bytestring to hexadecimal notation
1445
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
2503
hex_fpr = binascii.hexlify(fpr).upper()
1446
2504
return hex_fpr
1447
2505
1448
2506
1449
class MultiprocessingMixIn(object):
2507
class MultiprocessingMixIn:
1450
2508
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2509
1451
2510
def sub_process_main(self, request, address):
1452
2511
try:
1453
2512
self.finish_request(request, address)
1454
except:
2513
except Exception:
1455
2514
self.handle_error(request, address)
1456
2515
self.close_request(request)
1457
2516
1458
2517
def process_request(self, request, address):
1459
2518
"""Start a new process to process the request."""
1460
multiprocessing.Process(target = self.sub_process_main,
1461
args = (request, address)).start()
1462
1463
1464
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2519
proc = multiprocessing.Process(target=self.sub_process_main,
2520
args=(request, address))
2521
proc.start()
2522
return proc
2523
2524
2525
class MultiprocessingMixInWithPipe(MultiprocessingMixIn):
1465
2526
""" adds a pipe to the MixIn """
2527
1466
2528
def process_request(self, request, client_address):
1467
2529
"""Overrides and wraps the original process_request().
1468
2530
1469
2531
This function creates a new pipe in self.pipe
1470
2532
"""
1471
2533
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1472
1473
super(MultiprocessingMixInWithPipe,
1474
self).process_request(request, client_address)
2534
2535
proc = MultiprocessingMixIn.process_request(self, request,
2536
client_address)
1475
2537
self.child_pipe.close()
1476
self.add_pipe(parent_pipe)
1477
1478
def add_pipe(self, parent_pipe):
2538
self.add_pipe(parent_pipe, proc)
2539
2540
def add_pipe(self, parent_pipe, proc):
1479
2541
"""Dummy function; override as necessary"""
1480
raise NotImplementedError
2542
raise NotImplementedError()
1481
2543
1482
2544
1483
2545
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1484
socketserver.TCPServer, object):
2546
socketserver.TCPServer):
1485
2547
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1486
2548
1487
2549
Attributes:
1488
2550
enabled: Boolean; whether this server is activated yet
1489
2551
interface: None or a network interface name (string)
1490
2552
use_ipv6: Boolean; to use IPv6 or not
1491
2553
"""
2554
1492
2555
def __init__(self, server_address, RequestHandlerClass,
1493
interface=None, use_ipv6=True):
2556
interface=None,
2557
use_ipv6=True,
2558
socketfd=None):
2559
"""If socketfd is set, use that file descriptor instead of
2560
creating a new one with socket.socket().
2561
"""
1494
2562
self.interface = interface
1495
2563
if use_ipv6:
1496
2564
self.address_family = socket.AF_INET6
2565
if socketfd is not None:
2566
# Save the file descriptor
2567
self.socketfd = socketfd
2568
# Save the original socket.socket() function
2569
self.socket_socket = socket.socket
2570
2571
# To implement --socket, we monkey patch socket.socket.
2572
#
2573
# (When socketserver.TCPServer is a new-style class, we
2574
# could make self.socket into a property instead of monkey
2575
# patching socket.socket.)
2576
#
2577
# Create a one-time-only replacement for socket.socket()
2578
@functools.wraps(socket.socket)
2579
def socket_wrapper(*args, **kwargs):
2580
# Restore original function so subsequent calls are
2581
# not affected.
2582
socket.socket = self.socket_socket
2583
del self.socket_socket
2584
# This time only, return a new socket object from the
2585
# saved file descriptor.
2586
return socket.fromfd(self.socketfd, *args, **kwargs)
2587
# Replace socket.socket() function with wrapper
2588
socket.socket = socket_wrapper
2589
# The socketserver.TCPServer.__init__ will call
2590
# socket.socket(), which might be our replacement,
2591
# socket_wrapper(), if socketfd was set.
1497
2592
socketserver.TCPServer.__init__(self, server_address,
1498
2593
RequestHandlerClass)
2594
1499
2595
def server_bind(self):
1500
2596
"""This overrides the normal server_bind() function
1501
2597
to bind to an interface if one was specified, and also NOT to
1502
2598
bind to an address or port if they were not specified."""
2599
global SO_BINDTODEVICE
1503
2600
if self.interface is not None:
1504
2601
if SO_BINDTODEVICE is None:
1505
logger.error("SO_BINDTODEVICE does not exist;"
1506
" cannot bind to interface %s",
1507
self.interface)
1508
else:
1509
try:
1510
self.socket.setsockopt(socket.SOL_SOCKET,
1511
SO_BINDTODEVICE,
1512
str(self.interface
1513
+ '\0'))
1514
except socket.error as error:
1515
if error[0] == errno.EPERM:
1516
logger.error("No permission to"
1517
" bind to interface %s",
1518
self.interface)
1519
elif error[0] == errno.ENOPROTOOPT:
1520
logger.error("SO_BINDTODEVICE not available;"
1521
" cannot bind to interface %s",
1522
self.interface)
1523
else:
1524
raise
2602
# Fall back to a hard-coded value which seems to be
2603
# common enough.
2604
logger.warning("SO_BINDTODEVICE not found, trying 25")
2605
SO_BINDTODEVICE = 25
2606
try:
2607
self.socket.setsockopt(
2608
socket.SOL_SOCKET, SO_BINDTODEVICE,
2609
(self.interface + "\0").encode("utf-8"))
2610
except socket.error as error:
2611
if error.errno == errno.EPERM:
2612
logger.error("No permission to bind to"
2613
" interface %s", self.interface)
2614
elif error.errno == errno.ENOPROTOOPT:
2615
logger.error("SO_BINDTODEVICE not available;"
2616
" cannot bind to interface %s",
2617
self.interface)
2618
elif error.errno == errno.ENODEV:
2619
logger.error("Interface %s does not exist,"
2620
" cannot bind", self.interface)
2621
else:
2622
raise
1525
2623
# Only bind(2) the socket if we really need to.
1526
2624
if self.server_address[0] or self.server_address[1]:
2625
if self.server_address[1]:
2626
self.allow_reuse_address = True
1527
2627
if not self.server_address[0]:
1528
2628
if self.address_family == socket.AF_INET6:
1529
any_address = "::" # in6addr_any
2629
any_address = "::" # in6addr_any
1530
2630
else:
1531
any_address = socket.INADDR_ANY
2631
any_address = "0.0.0.0" # INADDR_ANY
1532
2632
self.server_address = (any_address,
1533
2633
self.server_address[1])
1534
2634
elif not self.server_address[1]:
1535
self.server_address = (self.server_address[0],
1536
0)
2635
self.server_address = (self.server_address[0], 0)
1537
2636
# if self.interface:
1538
2637
# self.server_address = (self.server_address[0],
1539
2638
# 0, # port
1545
2644
1546
2645
class MandosServer(IPv6_TCPServer):
1547
2646
"""Mandos server.
1548
2647
1549
2648
Attributes:
1550
2649
clients: set of Client objects
1551
2650
gnutls_priority GnuTLS priority string
1552
2651
use_dbus: Boolean; to emit D-Bus signals or not
1553
1554
Assumes a gobject.MainLoop event loop.
2652
2653
Assumes a GLib.MainLoop event loop.
1555
2654
"""
2655
1556
2656
def __init__(self, server_address, RequestHandlerClass,
1557
interface=None, use_ipv6=True, clients=None,
1558
gnutls_priority=None, use_dbus=True):
2657
interface=None,
2658
use_ipv6=True,
2659
clients=None,
2660
gnutls_priority=None,
2661
use_dbus=True,
2662
socketfd=None):
1559
2663
self.enabled = False
1560
2664
self.clients = clients
1561
2665
if self.clients is None:
1562
self.clients = set()
2666
self.clients = {}
1563
2667
self.use_dbus = use_dbus
1564
2668
self.gnutls_priority = gnutls_priority
1565
2669
IPv6_TCPServer.__init__(self, server_address,
1566
2670
RequestHandlerClass,
1567
interface = interface,
1568
use_ipv6 = use_ipv6)
2671
interface=interface,
2672
use_ipv6=use_ipv6,
2673
socketfd=socketfd)
2674
1569
2675
def server_activate(self):
1570
2676
if self.enabled:
1571
2677
return socketserver.TCPServer.server_activate(self)
2678
1572
2679
def enable(self):
1573
2680
self.enabled = True
1574
def add_pipe(self, parent_pipe):
2681
2682
def add_pipe(self, parent_pipe, proc):
1575
2683
# Call "handle_ipc" for both data and EOF events
1576
gobject.io_add_watch(parent_pipe.fileno(),
1577
gobject.IO_IN | gobject.IO_HUP,
1578
functools.partial(self.handle_ipc,
1579
parent_pipe = parent_pipe))
1580
1581
def handle_ipc(self, source, condition, parent_pipe=None,
2684
GLib.io_add_watch(
2685
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2686
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2687
functools.partial(self.handle_ipc,
2688
parent_pipe=parent_pipe,
2689
proc=proc))
2690
2691
def handle_ipc(self, source, condition,
2692
parent_pipe=None,
2693
proc=None,
1582
2694
client_object=None):
1583
condition_names = {
1584
gobject.IO_IN: "IN", # There is data to read.
1585
gobject.IO_OUT: "OUT", # Data can be written (without
1586
# blocking).
1587
gobject.IO_PRI: "PRI", # There is urgent data to read.
1588
gobject.IO_ERR: "ERR", # Error condition.
1589
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1590
# broken, usually for pipes and
1591
# sockets).
1592
}
1593
conditions_string = ' | '.join(name
1594
for cond, name in
1595
condition_names.iteritems()
1596
if cond & condition)
1597
# error or the other end of multiprocessing.Pipe has closed
1598
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2695
# error, or the other end of multiprocessing.Pipe has closed
2696
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2697
# Wait for other process to exit
2698
proc.join()
1599
2699
return False
1600
2700
1601
2701
# Read a request from the child
1602
2702
request = parent_pipe.recv()
1603
2703
command = request[0]
1604
2704
1605
2705
if command == 'init':
1606
fpr = request[1]
1607
address = request[2]
1608
1609
for c in self.clients:
1610
if c.fingerprint == fpr:
2706
key_id = request[1].decode("ascii")
2707
fpr = request[2].decode("ascii")
2708
address = request[3]
2709
2710
for c in self.clients.values():
2711
if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2712
continue
2713
if key_id and c.key_id == key_id:
2714
client = c
2715
break
2716
if fpr and c.fingerprint == fpr:
1611
2717
client = c
1612
2718
break
1613
2719
else:
1614
logger.info("Client not found for fingerprint: %s, ad"
1615
"dress: %s", fpr, address)
2720
logger.info("Client not found for key ID: %s, address"
2721
": %s", key_id or fpr, address)
1616
2722
if self.use_dbus:
1617
2723
# Emit D-Bus signal
1618
mandos_dbus_service.ClientNotFound(fpr, address[0])
2724
mandos_dbus_service.ClientNotFound(key_id or fpr,
2725
address[0])
1619
2726
parent_pipe.send(False)
1620
2727
return False
1621
1622
gobject.io_add_watch(parent_pipe.fileno(),
1623
gobject.IO_IN | gobject.IO_HUP,
1624
functools.partial(self.handle_ipc,
1625
parent_pipe = parent_pipe,
1626
client_object = client))
2728
2729
GLib.io_add_watch(
2730
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2731
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2732
functools.partial(self.handle_ipc,
2733
parent_pipe=parent_pipe,
2734
proc=proc,
2735
client_object=client))
1627
2736
parent_pipe.send(True)
1628
# remove the old hook in favor of the new above hook on same fileno
2737
# remove the old hook in favor of the new above hook on
2738
# same fileno
1629
2739
return False
1630
2740
if command == 'funcall':
1631
2741
funcname = request[1]
1632
2742
args = request[2]
1633
2743
kwargs = request[3]
1634
1635
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
1636
2744
2745
parent_pipe.send(('data', getattr(client_object,
2746
funcname)(*args,
2747
**kwargs)))
2748
1637
2749
if command == 'getattr':
1638
2750
attrname = request[1]
1639
if callable(client_object.__getattribute__(attrname)):
1640
parent_pipe.send(('function',))
2751
if isinstance(client_object.__getattribute__(attrname),
2752
collections.Callable):
2753
parent_pipe.send(('function', ))
1641
2754
else:
1642
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
1643
2755
parent_pipe.send((
2756
'data', client_object.__getattribute__(attrname)))
2757
1644
2758
if command == 'setattr':
1645
2759
attrname = request[1]
1646
2760
value = request[2]
1647
2761
setattr(client_object, attrname, value)
1648
2762
1649
2763
return True
1650
2764
1651
2765
2766
def rfc3339_duration_to_delta(duration):
2767
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2768
2769
>>> rfc3339_duration_to_delta("P7D") == datetime.timedelta(7)
2770
True
2771
>>> rfc3339_duration_to_delta("PT60S") == datetime.timedelta(0, 60)
2772
True
2773
>>> rfc3339_duration_to_delta("PT60M") == datetime.timedelta(0, 3600)
2774
True
2775
>>> rfc3339_duration_to_delta("PT24H") == datetime.timedelta(1)
2776
True
2777
>>> rfc3339_duration_to_delta("P1W") == datetime.timedelta(7)
2778
True
2779
>>> rfc3339_duration_to_delta("PT5M30S") == datetime.timedelta(0, 330)
2780
True
2781
>>> rfc3339_duration_to_delta("P1DT3M20S") == datetime.timedelta(1, 200)
2782
True
2783
"""
2784
2785
# Parsing an RFC 3339 duration with regular expressions is not
2786
# possible - there would have to be multiple places for the same
2787
# values, like seconds. The current code, while more esoteric, is
2788
# cleaner without depending on a parsing library. If Python had a
2789
# built-in library for parsing we would use it, but we'd like to
2790
# avoid excessive use of external libraries.
2791
2792
# New type for defining tokens, syntax, and semantics all-in-one
2793
Token = collections.namedtuple("Token", (
2794
"regexp", # To match token; if "value" is not None, must have
2795
# a "group" containing digits
2796
"value", # datetime.timedelta or None
2797
"followers")) # Tokens valid after this token
2798
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2799
# the "duration" ABNF definition in RFC 3339, Appendix A.
2800
token_end = Token(re.compile(r"$"), None, frozenset())
2801
token_second = Token(re.compile(r"(\d+)S"),
2802
datetime.timedelta(seconds=1),
2803
frozenset((token_end, )))
2804
token_minute = Token(re.compile(r"(\d+)M"),
2805
datetime.timedelta(minutes=1),
2806
frozenset((token_second, token_end)))
2807
token_hour = Token(re.compile(r"(\d+)H"),
2808
datetime.timedelta(hours=1),
2809
frozenset((token_minute, token_end)))
2810
token_time = Token(re.compile(r"T"),
2811
None,
2812
frozenset((token_hour, token_minute,
2813
token_second)))
2814
token_day = Token(re.compile(r"(\d+)D"),
2815
datetime.timedelta(days=1),
2816
frozenset((token_time, token_end)))
2817
token_month = Token(re.compile(r"(\d+)M"),
2818
datetime.timedelta(weeks=4),
2819
frozenset((token_day, token_end)))
2820
token_year = Token(re.compile(r"(\d+)Y"),
2821
datetime.timedelta(weeks=52),
2822
frozenset((token_month, token_end)))
2823
token_week = Token(re.compile(r"(\d+)W"),
2824
datetime.timedelta(weeks=1),
2825
frozenset((token_end, )))
2826
token_duration = Token(re.compile(r"P"), None,
2827
frozenset((token_year, token_month,
2828
token_day, token_time,
2829
token_week)))
2830
# Define starting values:
2831
# Value so far
2832
value = datetime.timedelta()
2833
found_token = None
2834
# Following valid tokens
2835
followers = frozenset((token_duration, ))
2836
# String left to parse
2837
s = duration
2838
# Loop until end token is found
2839
while found_token is not token_end:
2840
# Search for any currently valid tokens
2841
for token in followers:
2842
match = token.regexp.match(s)
2843
if match is not None:
2844
# Token found
2845
if token.value is not None:
2846
# Value found, parse digits
2847
factor = int(match.group(1), 10)
2848
# Add to value so far
2849
value += factor * token.value
2850
# Strip token from string
2851
s = token.regexp.sub("", s, 1)
2852
# Go to found token
2853
found_token = token
2854
# Set valid next tokens
2855
followers = found_token.followers
2856
break
2857
else:
2858
# No currently valid tokens were found
2859
raise ValueError("Invalid RFC 3339 duration: {!r}"
2860
.format(duration))
2861
# End token found
2862
return value
2863
2864
1652
2865
def string_to_delta(interval):
1653
2866
"""Parse a string and return a datetime.timedelta
1654
1655
>>> string_to_delta('7d')
1656
datetime.timedelta(7)
1657
>>> string_to_delta('60s')
1658
datetime.timedelta(0, 60)
1659
>>> string_to_delta('60m')
1660
datetime.timedelta(0, 3600)
1661
>>> string_to_delta('24h')
1662
datetime.timedelta(1)
1663
>>> string_to_delta('1w')
1664
datetime.timedelta(7)
1665
>>> string_to_delta('5m 30s')
1666
datetime.timedelta(0, 330)
2867
2868
>>> string_to_delta('7d') == datetime.timedelta(7)
2869
True
2870
>>> string_to_delta('60s') == datetime.timedelta(0, 60)
2871
True
2872
>>> string_to_delta('60m') == datetime.timedelta(0, 3600)
2873
True
2874
>>> string_to_delta('24h') == datetime.timedelta(1)
2875
True
2876
>>> string_to_delta('1w') == datetime.timedelta(7)
2877
True
2878
>>> string_to_delta('5m 30s') == datetime.timedelta(0, 330)
2879
True
1667
2880
"""
2881
2882
try:
2883
return rfc3339_duration_to_delta(interval)
2884
except ValueError:
2885
pass
2886
1668
2887
timevalue = datetime.timedelta(0)
1669
2888
for s in interval.split():
1670
2889
try:
1671
suffix = unicode(s[-1])
2890
suffix = s[-1]
1672
2891
value = int(s[:-1])
1673
2892
if suffix == "d":
1674
2893
delta = datetime.timedelta(value)
1681
2900
elif suffix == "w":
1682
2901
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1683
2902
else:
1684
raise ValueError("Unknown suffix %r" % suffix)
1685
except (ValueError, IndexError) as e:
2903
raise ValueError("Unknown suffix {!r}".format(suffix))
2904
except IndexError as e:
1686
2905
raise ValueError(*(e.args))
1687
2906
timevalue += delta
1688
2907
return timevalue
1689
2908
1690
2909
1691
def if_nametoindex(interface):
1692
"""Call the C function if_nametoindex(), or equivalent
1693
1694
Note: This function cannot accept a unicode string."""
1695
global if_nametoindex
1696
try:
1697
if_nametoindex = (ctypes.cdll.LoadLibrary
1698
(ctypes.util.find_library("c"))
1699
.if_nametoindex)
1700
except (OSError, AttributeError):
1701
logger.warning("Doing if_nametoindex the hard way")
1702
def if_nametoindex(interface):
1703
"Get an interface index the hard way, i.e. using fcntl()"
1704
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1705
with contextlib.closing(socket.socket()) as s:
1706
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1707
struct.pack(str("16s16x"),
1708
interface))
1709
interface_index = struct.unpack(str("I"),
1710
ifreq[16:20])[0]
1711
return interface_index
1712
return if_nametoindex(interface)
1713
1714
1715
def daemon(nochdir = False, noclose = False):
2910
def daemon(nochdir=False, noclose=False):
1716
2911
"""See daemon(3). Standard BSD Unix function.
1717
2912
1718
2913
This should really exist as os.daemon, but it doesn't (yet)."""
1719
2914
if os.fork():
1720
2915
sys.exit()
1725
2920
sys.exit()
1726
2921
if not noclose:
1727
2922
# Close all standard open file descriptors
1728
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2923
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1729
2924
if not stat.S_ISCHR(os.fstat(null).st_mode):
1730
2925
raise OSError(errno.ENODEV,
1731
"%s not a character device"
1732
% os.path.devnull)
2926
"{} not a character device"
2927
.format(os.devnull))
1733
2928
os.dup2(null, sys.stdin.fileno())
1734
2929
os.dup2(null, sys.stdout.fileno())
1735
2930
os.dup2(null, sys.stderr.fileno())
1738
2933
1739
2934
1740
2935
def main():
1741
2936
1742
2937
##################################################################
1743
2938
# Parsing of options, both command line and config file
1744
2939
1745
2940
parser = argparse.ArgumentParser()
1746
2941
parser.add_argument("-v", "--version", action="version",
1747
version = "%%(prog)s %s" % version,
2942
version="%(prog)s {}".format(version),
1748
2943
help="show version number and exit")
1749
2944
parser.add_argument("-i", "--interface", metavar="IF",
1750
2945
help="Bind to interface IF")
1756
2951
help="Run self-test")
1757
2952
parser.add_argument("--debug", action="store_true",
1758
2953
help="Debug mode; run in foreground and log"
1759
" to terminal")
2954
" to terminal", default=None)
1760
2955
parser.add_argument("--debuglevel", metavar="LEVEL",
1761
2956
help="Debug level for stdout output")
1762
2957
parser.add_argument("--priority", help="GnuTLS"
1769
2964
" files")
1770
2965
parser.add_argument("--no-dbus", action="store_false",
1771
2966
dest="use_dbus", help="Do not provide D-Bus"
1772
" system bus interface")
2967
" system bus interface", default=None)
1773
2968
parser.add_argument("--no-ipv6", action="store_false",
1774
dest="use_ipv6", help="Do not use IPv6")
2969
dest="use_ipv6", help="Do not use IPv6",
2970
default=None)
2971
parser.add_argument("--no-restore", action="store_false",
2972
dest="restore", help="Do not restore stored"
2973
" state", default=None)
2974
parser.add_argument("--socket", type=int,
2975
help="Specify a file descriptor to a network"
2976
" socket to use instead of creating one")
2977
parser.add_argument("--statedir", metavar="DIR",
2978
help="Directory to save/restore state in")
2979
parser.add_argument("--foreground", action="store_true",
2980
help="Run in foreground", default=None)
2981
parser.add_argument("--no-zeroconf", action="store_false",
2982
dest="zeroconf", help="Do not use Zeroconf",
2983
default=None)
2984
1775
2985
options = parser.parse_args()
1776
1777
if options.check:
1778
import doctest
1779
doctest.testmod()
1780
sys.exit()
1781
2986
1782
2987
# Default values for config file for server-global settings
1783
server_defaults = { "interface": "",
1784
"address": "",
1785
"port": "",
1786
"debug": "False",
1787
"priority":
1788
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1789
"servicename": "Mandos",
1790
"use_dbus": "True",
1791
"use_ipv6": "True",
1792
"debuglevel": "",
1793
}
1794
2988
if gnutls.has_rawpk:
2989
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
2990
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
2991
else:
2992
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2993
":+SIGN-DSA-SHA256")
2994
server_defaults = {"interface": "",
2995
"address": "",
2996
"port": "",
2997
"debug": "False",
2998
"priority": priority,
2999
"servicename": "Mandos",
3000
"use_dbus": "True",
3001
"use_ipv6": "True",
3002
"debuglevel": "",
3003
"restore": "True",
3004
"socket": "",
3005
"statedir": "/var/lib/mandos",
3006
"foreground": "False",
3007
"zeroconf": "True",
3008
}
3009
del priority
3010
1795
3011
# Parse config file for server-global settings
1796
server_config = configparser.SafeConfigParser(server_defaults)
3012
server_config = configparser.ConfigParser(server_defaults)
1797
3013
del server_defaults
1798
server_config.read(os.path.join(options.configdir,
1799
"mandos.conf"))
1800
# Convert the SafeConfigParser object to a dict
3014
server_config.read(os.path.join(options.configdir, "mandos.conf"))
3015
# Convert the ConfigParser object to a dict
1801
3016
server_settings = server_config.defaults()
1802
3017
# Use the appropriate methods on the non-string config options
1803
for option in ("debug", "use_dbus", "use_ipv6"):
3018
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3019
"foreground", "zeroconf"):
1804
3020
server_settings[option] = server_config.getboolean("DEFAULT",
1805
3021
option)
1806
3022
if server_settings["port"]:
1807
3023
server_settings["port"] = server_config.getint("DEFAULT",
1808
3024
"port")
3025
if server_settings["socket"]:
3026
server_settings["socket"] = server_config.getint("DEFAULT",
3027
"socket")
3028
# Later, stdin will, and stdout and stderr might, be dup'ed
3029
# over with an opened os.devnull. But we don't want this to
3030
# happen with a supplied network socket.
3031
if 0 <= server_settings["socket"] <= 2:
3032
server_settings["socket"] = os.dup(server_settings
3033
["socket"])
1809
3034
del server_config
1810
3035
1811
3036
# Override the settings from the config file with command line
1812
3037
# options, if set.
1813
3038
for option in ("interface", "address", "port", "debug",
1814
"priority", "servicename", "configdir",
1815
"use_dbus", "use_ipv6", "debuglevel"):
3039
"priority", "servicename", "configdir", "use_dbus",
3040
"use_ipv6", "debuglevel", "restore", "statedir",
3041
"socket", "foreground", "zeroconf"):
1816
3042
value = getattr(options, option)
1817
3043
if value is not None:
1818
3044
server_settings[option] = value
1819
3045
del options
1820
3046
# Force all strings to be unicode
1821
3047
for option in server_settings.keys():
1822
if type(server_settings[option]) is str:
1823
server_settings[option] = unicode(server_settings[option])
3048
if isinstance(server_settings[option], bytes):
3049
server_settings[option] = (server_settings[option]
3050
.decode("utf-8"))
3051
# Force all boolean options to be boolean
3052
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3053
"foreground", "zeroconf"):
3054
server_settings[option] = bool(server_settings[option])
3055
# Debug implies foreground
3056
if server_settings["debug"]:
3057
server_settings["foreground"] = True
1824
3058
# Now we have our good server settings in "server_settings"
1825
3059
1826
3060
##################################################################
1827
3061
3062
if (not server_settings["zeroconf"]
3063
and not (server_settings["port"]
3064
or server_settings["socket"] != "")):
3065
parser.error("Needs port or socket to work without Zeroconf")
3066
1828
3067
# For convenience
1829
3068
debug = server_settings["debug"]
1830
3069
debuglevel = server_settings["debuglevel"]
1831
3070
use_dbus = server_settings["use_dbus"]
1832
3071
use_ipv6 = server_settings["use_ipv6"]
1833
3072
stored_state_path = os.path.join(server_settings["statedir"],
3073
stored_state_file)
3074
foreground = server_settings["foreground"]
3075
zeroconf = server_settings["zeroconf"]
3076
3077
if debug:
3078
initlogger(debug, logging.DEBUG)
3079
else:
3080
if not debuglevel:
3081
initlogger(debug)
3082
else:
3083
level = getattr(logging, debuglevel.upper())
3084
initlogger(debug, level)
3085
1834
3086
if server_settings["servicename"] != "Mandos":
1835
syslogger.setFormatter(logging.Formatter
1836
('Mandos (%s) [%%(process)d]:'
1837
' %%(levelname)s: %%(message)s'
1838
% server_settings["servicename"]))
1839
3087
syslogger.setFormatter(
3088
logging.Formatter('Mandos ({}) [%(process)d]:'
3089
' %(levelname)s: %(message)s'.format(
3090
server_settings["servicename"])))
3091
1840
3092
# Parse config file with clients
1841
client_defaults = { "timeout": "5m",
1842
"extended_timeout": "15m",
1843
"interval": "2m",
1844
"checker": "fping -q -- %%(host)s",
1845
"host": "",
1846
"approval_delay": "0s",
1847
"approval_duration": "1s",
1848
}
1849
client_config = configparser.SafeConfigParser(client_defaults)
3093
client_config = configparser.ConfigParser(Client.client_defaults)
1850
3094
client_config.read(os.path.join(server_settings["configdir"],
1851
3095
"clients.conf"))
1852
3096
1853
3097
global mandos_dbus_service
1854
3098
mandos_dbus_service = None
1855
1856
tcp_server = MandosServer((server_settings["address"],
1857
server_settings["port"]),
1858
ClientHandler,
1859
interface=(server_settings["interface"]
1860
or None),
1861
use_ipv6=use_ipv6,
1862
gnutls_priority=
1863
server_settings["priority"],
1864
use_dbus=use_dbus)
1865
if not debug:
1866
pidfilename = "/var/run/mandos.pid"
1867
try:
1868
pidfile = open(pidfilename, "w")
1869
except IOError:
1870
logger.error("Could not open file %r", pidfilename)
1871
1872
try:
1873
uid = pwd.getpwnam("_mandos").pw_uid
1874
gid = pwd.getpwnam("_mandos").pw_gid
1875
except KeyError:
1876
try:
1877
uid = pwd.getpwnam("mandos").pw_uid
1878
gid = pwd.getpwnam("mandos").pw_gid
3099
3100
socketfd = None
3101
if server_settings["socket"] != "":
3102
socketfd = server_settings["socket"]
3103
tcp_server = MandosServer(
3104
(server_settings["address"], server_settings["port"]),
3105
ClientHandler,
3106
interface=(server_settings["interface"] or None),
3107
use_ipv6=use_ipv6,
3108
gnutls_priority=server_settings["priority"],
3109
use_dbus=use_dbus,
3110
socketfd=socketfd)
3111
if not foreground:
3112
pidfilename = "/run/mandos.pid"
3113
if not os.path.isdir("/run/."):
3114
pidfilename = "/var/run/mandos.pid"
3115
pidfile = None
3116
try:
3117
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3118
except IOError as e:
3119
logger.error("Could not open file %r", pidfilename,
3120
exc_info=e)
3121
3122
for name, group in (("_mandos", "_mandos"),
3123
("mandos", "mandos"),
3124
("nobody", "nogroup")):
3125
try:
3126
uid = pwd.getpwnam(name).pw_uid
3127
gid = pwd.getpwnam(group).pw_gid
3128
break
1879
3129
except KeyError:
1880
try:
1881
uid = pwd.getpwnam("nobody").pw_uid
1882
gid = pwd.getpwnam("nobody").pw_gid
1883
except KeyError:
1884
uid = 65534
1885
gid = 65534
3130
continue
3131
else:
3132
uid = 65534
3133
gid = 65534
1886
3134
try:
1887
3135
os.setgid(gid)
1888
3136
os.setuid(uid)
3137
if debug:
3138
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3139
gid))
1889
3140
except OSError as error:
1890
if error[0] != errno.EPERM:
1891
raise error
1892
1893
if not debug and not debuglevel:
1894
syslogger.setLevel(logging.WARNING)
1895
console.setLevel(logging.WARNING)
1896
if debuglevel:
1897
level = getattr(logging, debuglevel.upper())
1898
syslogger.setLevel(level)
1899
console.setLevel(level)
1900
3141
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3142
.format(uid, gid, os.strerror(error.errno)))
3143
if error.errno != errno.EPERM:
3144
raise
3145
1901
3146
if debug:
1902
3147
# Enable all possible GnuTLS debugging
1903
3148
1904
3149
# "Use a log level over 10 to enable all debugging options."
1905
3150
# - GnuTLS manual
1906
gnutls.library.functions.gnutls_global_set_log_level(11)
1907
1908
@gnutls.library.types.gnutls_log_func
3151
gnutls.global_set_log_level(11)
3152
3153
@gnutls.log_func
1909
3154
def debug_gnutls(level, string):
1910
3155
logger.debug("GnuTLS: %s", string[:-1])
1911
1912
(gnutls.library.functions
1913
.gnutls_global_set_log_function(debug_gnutls))
1914
3156
3157
gnutls.global_set_log_function(debug_gnutls)
3158
1915
3159
# Redirect stdin so all checkers get /dev/null
1916
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3160
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1917
3161
os.dup2(null, sys.stdin.fileno())
1918
3162
if null > 2:
1919
3163
os.close(null)
1920
else:
1921
# No console logging
1922
logger.removeHandler(console)
1923
3164
1924
3165
# Need to fork before connecting to D-Bus
1925
if not debug:
3166
if not foreground:
1926
3167
# Close all input and output, do double fork, etc.
1927
3168
daemon()
1928
3169
3170
if gi.version_info < (3, 10, 2):
3171
# multiprocessing will use threads, so before we use GLib we
3172
# need to inform GLib that threads will be used.
3173
GLib.threads_init()
3174
1929
3175
global main_loop
1930
3176
# From the Avahi example code
1931
DBusGMainLoop(set_as_default=True )
1932
main_loop = gobject.MainLoop()
3177
DBusGMainLoop(set_as_default=True)
3178
main_loop = GLib.MainLoop()
1933
3179
bus = dbus.SystemBus()
1934
3180
# End of Avahi example code
1935
3181
if use_dbus:
1936
3182
try:
1937
3183
bus_name = dbus.service.BusName("se.recompile.Mandos",
1938
bus, do_not_queue=True)
1939
bus_name_transitional = dbus.service.BusName("se.bsnet.fukt.Mandos",
1940
bus, do_not_queue=True)
1941
except dbus.exceptions.NameExistsException as e:
1942
logger.error(unicode(e) + ", disabling D-Bus")
3184
bus,
3185
do_not_queue=True)
3186
old_bus_name = dbus.service.BusName(
3187
"se.bsnet.fukt.Mandos", bus,
3188
do_not_queue=True)
3189
except dbus.exceptions.DBusException as e:
3190
logger.error("Disabling D-Bus:", exc_info=e)
1943
3191
use_dbus = False
1944
3192
server_settings["use_dbus"] = False
1945
3193
tcp_server.use_dbus = False
1946
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1947
service = AvahiService(name = server_settings["servicename"],
1948
servicetype = "_mandos._tcp",
1949
protocol = protocol, bus = bus)
1950
if server_settings["interface"]:
1951
service.interface = (if_nametoindex
1952
(str(server_settings["interface"])))
1953
3194
if zeroconf:
3195
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3196
service = AvahiServiceToSyslog(
3197
name=server_settings["servicename"],
3198
servicetype="_mandos._tcp",
3199
protocol=protocol,
3200
bus=bus)
3201
if server_settings["interface"]:
3202
service.interface = if_nametoindex(
3203
server_settings["interface"].encode("utf-8"))
3204
1954
3205
global multiprocessing_manager
1955
3206
multiprocessing_manager = multiprocessing.Manager()
1956
3207
1957
3208
client_class = Client
1958
3209
if use_dbus:
1959
client_class = functools.partial(ClientDBusTransitional, bus = bus)
1960
def client_config_items(config, section):
1961
special_settings = {
1962
"approved_by_default":
1963
lambda: config.getboolean(section,
1964
"approved_by_default"),
1965
}
1966
for name, value in config.items(section):
3210
client_class = functools.partial(ClientDBus, bus=bus)
3211
3212
client_settings = Client.config_parser(client_config)
3213
old_client_settings = {}
3214
clients_data = {}
3215
3216
# This is used to redirect stdout and stderr for checker processes
3217
global wnull
3218
wnull = open(os.devnull, "w") # A writable /dev/null
3219
# Only used if server is running in foreground but not in debug
3220
# mode
3221
if debug or not foreground:
3222
wnull.close()
3223
3224
# Get client data and settings from last running state.
3225
if server_settings["restore"]:
3226
try:
3227
with open(stored_state_path, "rb") as stored_state:
3228
if sys.version_info.major == 2:
3229
clients_data, old_client_settings = pickle.load(
3230
stored_state)
3231
else:
3232
bytes_clients_data, bytes_old_client_settings = (
3233
pickle.load(stored_state, encoding="bytes"))
3234
# Fix bytes to strings
3235
# clients_data
3236
# .keys()
3237
clients_data = {(key.decode("utf-8")
3238
if isinstance(key, bytes)
3239
else key): value
3240
for key, value in
3241
bytes_clients_data.items()}
3242
del bytes_clients_data
3243
for key in clients_data:
3244
value = {(k.decode("utf-8")
3245
if isinstance(k, bytes) else k): v
3246
for k, v in
3247
clients_data[key].items()}
3248
clients_data[key] = value
3249
# .client_structure
3250
value["client_structure"] = [
3251
(s.decode("utf-8")
3252
if isinstance(s, bytes)
3253
else s) for s in
3254
value["client_structure"]]
3255
# .name, .host, and .checker_command
3256
for k in ("name", "host", "checker_command"):
3257
if isinstance(value[k], bytes):
3258
value[k] = value[k].decode("utf-8")
3259
if "key_id" not in value:
3260
value["key_id"] = ""
3261
elif "fingerprint" not in value:
3262
value["fingerprint"] = ""
3263
# old_client_settings
3264
# .keys()
3265
old_client_settings = {
3266
(key.decode("utf-8")
3267
if isinstance(key, bytes)
3268
else key): value
3269
for key, value in
3270
bytes_old_client_settings.items()}
3271
del bytes_old_client_settings
3272
# .host and .checker_command
3273
for value in old_client_settings.values():
3274
for attribute in ("host", "checker_command"):
3275
if isinstance(value[attribute], bytes):
3276
value[attribute] = (value[attribute]
3277
.decode("utf-8"))
3278
os.remove(stored_state_path)
3279
except IOError as e:
3280
if e.errno == errno.ENOENT:
3281
logger.warning("Could not load persistent state:"
3282
" {}".format(os.strerror(e.errno)))
3283
else:
3284
logger.critical("Could not load persistent state:",
3285
exc_info=e)
3286
raise
3287
except EOFError as e:
3288
logger.warning("Could not load persistent state: "
3289
"EOFError:",
3290
exc_info=e)
3291
3292
with PGPEngine() as pgp:
3293
for client_name, client in clients_data.items():
3294
# Skip removed clients
3295
if client_name not in client_settings:
3296
continue
3297
3298
# Decide which value to use after restoring saved state.
3299
# We have three different values: Old config file,
3300
# new config file, and saved state.
3301
# New config value takes precedence if it differs from old
3302
# config value, otherwise use saved state.
3303
for name, value in client_settings[client_name].items():
3304
try:
3305
# For each value in new config, check if it
3306
# differs from the old config value (Except for
3307
# the "secret" attribute)
3308
if (name != "secret"
3309
and (value !=
3310
old_client_settings[client_name][name])):
3311
client[name] = value
3312
except KeyError:
3313
pass
3314
3315
# Clients who has passed its expire date can still be
3316
# enabled if its last checker was successful. A Client
3317
# whose checker succeeded before we stored its state is
3318
# assumed to have successfully run all checkers during
3319
# downtime.
3320
if client["enabled"]:
3321
if datetime.datetime.utcnow() >= client["expires"]:
3322
if not client["last_checked_ok"]:
3323
logger.warning(
3324
"disabling client {} - Client never "
3325
"performed a successful checker".format(
3326
client_name))
3327
client["enabled"] = False
3328
elif client["last_checker_status"] != 0:
3329
logger.warning(
3330
"disabling client {} - Client last"
3331
" checker failed with error code"
3332
" {}".format(
3333
client_name,
3334
client["last_checker_status"]))
3335
client["enabled"] = False
3336
else:
3337
client["expires"] = (
3338
datetime.datetime.utcnow()
3339
+ client["timeout"])
3340
logger.debug("Last checker succeeded,"
3341
" keeping {} enabled".format(
3342
client_name))
1967
3343
try:
1968
yield (name, special_settings[name]())
1969
except KeyError:
1970
yield (name, value)
1971
1972
tcp_server.clients.update(set(
1973
client_class(name = section,
1974
config= dict(client_config_items(
1975
client_config, section)))
1976
for section in client_config.sections()))
3344
client["secret"] = pgp.decrypt(
3345
client["encrypted_secret"],
3346
client_settings[client_name]["secret"])
3347
except PGPError:
3348
# If decryption fails, we use secret from new settings
3349
logger.debug("Failed to decrypt {} old secret".format(
3350
client_name))
3351
client["secret"] = (client_settings[client_name]
3352
["secret"])
3353
3354
# Add/remove clients based on new changes made to config
3355
for client_name in (set(old_client_settings)
3356
- set(client_settings)):
3357
del clients_data[client_name]
3358
for client_name in (set(client_settings)
3359
- set(old_client_settings)):
3360
clients_data[client_name] = client_settings[client_name]
3361
3362
# Create all client objects
3363
for client_name, client in clients_data.items():
3364
tcp_server.clients[client_name] = client_class(
3365
name=client_name,
3366
settings=client,
3367
server_settings=server_settings)
3368
1977
3369
if not tcp_server.clients:
1978
3370
logger.warning("No clients defined")
1979
1980
if not debug:
1981
try:
1982
with pidfile:
1983
pid = os.getpid()
1984
pidfile.write(str(pid) + "\n".encode("utf-8"))
1985
del pidfile
1986
except IOError:
1987
logger.error("Could not write to file %r with PID %d",
1988
pidfilename, pid)
1989
except NameError:
1990
# "pidfile" was never created
1991
pass
3371
3372
if not foreground:
3373
if pidfile is not None:
3374
pid = os.getpid()
3375
try:
3376
with pidfile:
3377
print(pid, file=pidfile)
3378
except IOError:
3379
logger.error("Could not write to file %r with PID %d",
3380
pidfilename, pid)
3381
del pidfile
1992
3382
del pidfilename
1993
1994
signal.signal(signal.SIGINT, signal.SIG_IGN)
1995
1996
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1997
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1998
3383
3384
for termsig in (signal.SIGHUP, signal.SIGTERM):
3385
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3386
lambda: main_loop.quit() and False)
3387
1999
3388
if use_dbus:
2000
class MandosDBusService(dbus.service.Object):
3389
3390
@alternate_dbus_interfaces(
3391
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3392
class MandosDBusService(DBusObjectWithObjectManager):
2001
3393
"""A D-Bus proxy object"""
3394
2002
3395
def __init__(self):
2003
3396
dbus.service.Object.__init__(self, bus, "/")
2004
_interface = "se.bsnet.fukt.Mandos"
2005
3397
3398
_interface = "se.recompile.Mandos"
3399
2006
3400
@dbus.service.signal(_interface, signature="o")
2007
3401
def ClientAdded(self, objpath):
2008
3402
"D-Bus signal"
2009
3403
pass
2010
3404
2011
3405
@dbus.service.signal(_interface, signature="ss")
2012
def ClientNotFound(self, fingerprint, address):
3406
def ClientNotFound(self, key_id, address):
2013
3407
"D-Bus signal"
2014
3408
pass
2015
3409
3410
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3411
"true"})
2016
3412
@dbus.service.signal(_interface, signature="os")
2017
3413
def ClientRemoved(self, objpath, name):
2018
3414
"D-Bus signal"
2019
3415
pass
2020
3416
3417
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3418
"true"})
2021
3419
@dbus.service.method(_interface, out_signature="ao")
2022
3420
def GetAllClients(self):
2023
3421
"D-Bus method"
2024
return dbus.Array(c.dbus_object_path
2025
for c in tcp_server.clients)
2026
3422
return dbus.Array(c.dbus_object_path for c in
3423
tcp_server.clients.values())
3424
3425
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3426
"true"})
2027
3427
@dbus.service.method(_interface,
2028
3428
out_signature="a{oa{sv}}")
2029
3429
def GetAllClientsWithProperties(self):
2030
3430
"D-Bus method"
2031
3431
return dbus.Dictionary(
2032
((c.dbus_object_path, c.GetAll(""))
2033
for c in tcp_server.clients),
3432
{c.dbus_object_path: c.GetAll(
3433
"se.recompile.Mandos.Client")
3434
for c in tcp_server.clients.values()},
2034
3435
signature="oa{sv}")
2035
3436
2036
3437
@dbus.service.method(_interface, in_signature="o")
2037
3438
def RemoveClient(self, object_path):
2038
3439
"D-Bus method"
2039
for c in tcp_server.clients:
3440
for c in tcp_server.clients.values():
2040
3441
if c.dbus_object_path == object_path:
2041
tcp_server.clients.remove(c)
3442
del tcp_server.clients[c.name]
2042
3443
c.remove_from_connection()
2043
# Don't signal anything except ClientRemoved
3444
# Don't signal the disabling
2044
3445
c.disable(quiet=True)
2045
# Emit D-Bus signal
2046
self.ClientRemoved(object_path, c.name)
3446
# Emit D-Bus signal for removal
3447
self.client_removed_signal(c)
2047
3448
return
2048
3449
raise KeyError(object_path)
2049
3450
2050
3451
del _interface
2051
2052
class MandosDBusServiceTransitional(MandosDBusService):
2053
__metaclass__ = transitional_dbus_metaclass
2054
mandos_dbus_service = MandosDBusServiceTransitional()
2055
3452
3453
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3454
out_signature="a{oa{sa{sv}}}")
3455
def GetManagedObjects(self):
3456
"""D-Bus method"""
3457
return dbus.Dictionary(
3458
{client.dbus_object_path:
3459
dbus.Dictionary(
3460
{interface: client.GetAll(interface)
3461
for interface in
3462
client._get_all_interface_names()})
3463
for client in tcp_server.clients.values()})
3464
3465
def client_added_signal(self, client):
3466
"""Send the new standard signal and the old signal"""
3467
if use_dbus:
3468
# New standard signal
3469
self.InterfacesAdded(
3470
client.dbus_object_path,
3471
dbus.Dictionary(
3472
{interface: client.GetAll(interface)
3473
for interface in
3474
client._get_all_interface_names()}))
3475
# Old signal
3476
self.ClientAdded(client.dbus_object_path)
3477
3478
def client_removed_signal(self, client):
3479
"""Send the new standard signal and the old signal"""
3480
if use_dbus:
3481
# New standard signal
3482
self.InterfacesRemoved(
3483
client.dbus_object_path,
3484
client._get_all_interface_names())
3485
# Old signal
3486
self.ClientRemoved(client.dbus_object_path,
3487
client.name)
3488
3489
mandos_dbus_service = MandosDBusService()
3490
3491
# Save modules to variables to exempt the modules from being
3492
# unloaded before the function registered with atexit() is run.
3493
mp = multiprocessing
3494
wn = wnull
3495
2056
3496
def cleanup():
2057
3497
"Cleanup function; run on exit"
2058
service.cleanup()
2059
3498
if zeroconf:
3499
service.cleanup()
3500
3501
mp.active_children()
3502
wn.close()
3503
if not (tcp_server.clients or client_settings):
3504
return
3505
3506
# Store client before exiting. Secrets are encrypted with key
3507
# based on what config file has. If config file is
3508
# removed/edited, old secret will thus be unrecovable.
3509
clients = {}
3510
with PGPEngine() as pgp:
3511
for client in tcp_server.clients.values():
3512
key = client_settings[client.name]["secret"]
3513
client.encrypted_secret = pgp.encrypt(client.secret,
3514
key)
3515
client_dict = {}
3516
3517
# A list of attributes that can not be pickled
3518
# + secret.
3519
exclude = {"bus", "changedstate", "secret",
3520
"checker", "server_settings"}
3521
for name, typ in inspect.getmembers(dbus.service
3522
.Object):
3523
exclude.add(name)
3524
3525
client_dict["encrypted_secret"] = (client
3526
.encrypted_secret)
3527
for attr in client.client_structure:
3528
if attr not in exclude:
3529
client_dict[attr] = getattr(client, attr)
3530
3531
clients[client.name] = client_dict
3532
del client_settings[client.name]["secret"]
3533
3534
try:
3535
with tempfile.NamedTemporaryFile(
3536
mode='wb',
3537
suffix=".pickle",
3538
prefix='clients-',
3539
dir=os.path.dirname(stored_state_path),
3540
delete=False) as stored_state:
3541
pickle.dump((clients, client_settings), stored_state,
3542
protocol=2)
3543
tempname = stored_state.name
3544
os.rename(tempname, stored_state_path)
3545
except (IOError, OSError) as e:
3546
if not debug:
3547
try:
3548
os.remove(tempname)
3549
except NameError:
3550
pass
3551
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3552
logger.warning("Could not save persistent state: {}"
3553
.format(os.strerror(e.errno)))
3554
else:
3555
logger.warning("Could not save persistent state:",
3556
exc_info=e)
3557
raise
3558
3559
# Delete all clients, and settings from config
2060
3560
while tcp_server.clients:
2061
client = tcp_server.clients.pop()
3561
name, client = tcp_server.clients.popitem()
2062
3562
if use_dbus:
2063
3563
client.remove_from_connection()
2064
client.disable_hook = None
2065
# Don't signal anything except ClientRemoved
3564
# Don't signal the disabling
2066
3565
client.disable(quiet=True)
3566
# Emit D-Bus signal for removal
2067
3567
if use_dbus:
2068
# Emit D-Bus signal
2069
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
2070
client.name)
2071
3568
mandos_dbus_service.client_removed_signal(client)
3569
client_settings.clear()
3570
2072
3571
atexit.register(cleanup)
2073
2074
for client in tcp_server.clients:
3572
3573
for client in tcp_server.clients.values():
2075
3574
if use_dbus:
2076
# Emit D-Bus signal
2077
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2078
client.enable()
2079
3575
# Emit D-Bus signal for adding
3576
mandos_dbus_service.client_added_signal(client)
3577
# Need to initiate checking of clients
3578
if client.enabled:
3579
client.init_checker()
3580
2080
3581
tcp_server.enable()
2081
3582
tcp_server.server_activate()
2082
3583
2083
3584
# Find out what port we got
2084
service.port = tcp_server.socket.getsockname()[1]
3585
if zeroconf:
3586
service.port = tcp_server.socket.getsockname()[1]
2085
3587
if use_ipv6:
2086
3588
logger.info("Now listening on address %r, port %d,"
2087
" flowinfo %d, scope_id %d"
2088
% tcp_server.socket.getsockname())
3589
" flowinfo %d, scope_id %d",
3590
*tcp_server.socket.getsockname())
2089
3591
else: # IPv4
2090
logger.info("Now listening on address %r, port %d"
2091
% tcp_server.socket.getsockname())
2092
2093
#service.interface = tcp_server.socket.getsockname()[3]
2094
3592
logger.info("Now listening on address %r, port %d",
3593
*tcp_server.socket.getsockname())
3594
3595
# service.interface = tcp_server.socket.getsockname()[3]
3596
2095
3597
try:
2096
# From the Avahi example code
2097
try:
2098
service.activate()
2099
except dbus.exceptions.DBusException as error:
2100
logger.critical("DBusException: %s", error)
2101
cleanup()
2102
sys.exit(1)
2103
# End of Avahi example code
2104
2105
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2106
lambda *args, **kwargs:
2107
(tcp_server.handle_request
2108
(*args[2:], **kwargs) or True))
2109
3598
if zeroconf:
3599
# From the Avahi example code
3600
try:
3601
service.activate()
3602
except dbus.exceptions.DBusException as error:
3603
logger.critical("D-Bus Exception", exc_info=error)
3604
cleanup()
3605
sys.exit(1)
3606
# End of Avahi example code
3607
3608
GLib.io_add_watch(
3609
GLib.IOChannel.unix_new(tcp_server.fileno()),
3610
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
3611
lambda *args, **kwargs: (tcp_server.handle_request
3612
(*args[2:], **kwargs) or True))
3613
2110
3614
logger.debug("Starting main loop")
2111
3615
main_loop.run()
2112
3616
except AvahiError as error:
2113
logger.critical("AvahiError: %s", error)
3617
logger.critical("Avahi Error", exc_info=error)
2114
3618
cleanup()
2115
3619
sys.exit(1)
2116
3620
except KeyboardInterrupt:
2121
3625
# Must run before the D-Bus bus name gets deregistered
2122
3626
cleanup()
2123
3627
3628
3629
def should_only_run_tests():
3630
parser = argparse.ArgumentParser(add_help=False)
3631
parser.add_argument("--check", action='store_true')
3632
args, unknown_args = parser.parse_known_args()
3633
run_tests = args.check
3634
if run_tests:
3635
# Remove --check argument from sys.argv
3636
sys.argv[1:] = unknown_args
3637
return run_tests
3638
3639
# Add all tests from doctest strings
3640
def load_tests(loader, tests, none):
3641
import doctest
3642
tests.addTests(doctest.DocTestSuite())
3643
return tests
2124
3644
2125
3645
if __name__ == '__main__':
2126
main()
3646
try:
3647
if should_only_run_tests():
3648
# Call using ./mandos --check [--verbose]
3649
unittest.main()
3650
else:
3651
main()
3652
finally:
3653
logging.shutdown()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0