To get this branch, use:
bzr branch
http://bzr.recompile.se/loggerhead/mandos/release
« back to all changes in this revision
Viewing changes to mandos
- browse files at revision 237.7.751
- compare with another revision
- download diff
- download tarball
- view history from revision 237.7.751
- Committer: teddy at recompile
- Date: 2020-02-07 20:53:34 UTC
- mto: This revision was merged to the branch mainline in revision 396.
- Revision ID: teddy@recompile.se-20200207205334-dp41p8c8vw0ytik5
Allow users to more easily alter mandos.service
The sysvinit script uses /etc/default/mandos as an environment file,
and supports adding additional server options to a DAEMON_ARGS
environment variable. This should be supported by the systemd
service, too.
* mandos.service ([Service]/EnvironmentFile): New; set to
"/etc/default/mandos ".
([Service]/ExecStart): Append "$DAEMON_ARGS".
The sysvinit script uses /etc/default/mandos as an environment file,
and supports adding additional server options to a DAEMON_ARGS
environment variable. This should be supported by the systemd
service, too.
* mandos.service ([Service]/EnvironmentFile): New; set to
"/etc/default/mandos ".
([Service]/ExecStart): Append "$DAEMON_ARGS".
- 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
#
30
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
31
#
31
32
# Contact the authors at <mandos@recompile.se>.
32
#
33
#
33
34
34
35
from __future__ import (division, absolute_import, print_function,
35
36
unicode_literals)
36
37
37
import SocketServer as socketserver
38
try:
39
from future_builtins import *
40
except ImportError:
41
pass
42
43
try:
44
import SocketServer as socketserver
45
except ImportError:
46
import socketserver
38
47
import socket
39
48
import argparse
40
49
import datetime
41
50
import errno
42
import gnutls.crypto
43
import gnutls.connection
44
import gnutls.errors
45
import gnutls.library.functions
46
import gnutls.library.constants
47
import gnutls.library.types
48
import ConfigParser as configparser
51
try:
52
import ConfigParser as configparser
53
except ImportError:
54
import configparser
49
55
import sys
50
56
import re
51
57
import os
60
66
import struct
61
67
import fcntl
62
68
import functools
63
import cPickle as pickle
69
try:
70
import cPickle as pickle
71
except ImportError:
72
import pickle
64
73
import multiprocessing
65
74
import types
75
import binascii
76
import tempfile
77
import itertools
78
import collections
79
import codecs
80
import unittest
81
import random
66
82
67
83
import dbus
68
84
import dbus.service
69
import gobject
70
import avahi
85
import gi
86
from gi.repository import GLib
71
87
from dbus.mainloop.glib import DBusGMainLoop
72
88
import ctypes
73
89
import ctypes.util
74
90
import xml.dom.minidom
75
91
import inspect
76
92
77
try:
93
if sys.version_info.major == 2:
94
__metaclass__ = type
95
str = unicode
96
97
# Add collections.abc.Callable if it does not exist
98
try:
99
collections.abc.Callable
100
except AttributeError:
101
class abc:
102
Callable = collections.Callable
103
collections.abc = abc
104
del abc
105
106
# Show warnings by default
107
if not sys.warnoptions:
108
import warnings
109
warnings.simplefilter("default")
110
111
# Try to find the value of SO_BINDTODEVICE:
112
try:
113
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
114
# newer, and it is also the most natural place for it:
78
115
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
79
116
except AttributeError:
80
117
try:
118
# This is where SO_BINDTODEVICE was up to and including Python
119
# 2.6, and also 3.2:
81
120
from IN import SO_BINDTODEVICE
82
121
except ImportError:
83
SO_BINDTODEVICE = None
84
85
86
version = "1.4.0"
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)
122
# In Python 2.7 it seems to have been removed entirely.
123
# Try running the C preprocessor:
124
try:
125
cc = subprocess.Popen(["cc", "--language=c", "-E",
126
"/dev/stdin"],
127
stdin=subprocess.PIPE,
128
stdout=subprocess.PIPE)
129
stdout = cc.communicate(
130
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
131
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
132
except (OSError, ValueError, IndexError):
133
# No value found
134
SO_BINDTODEVICE = None
135
136
if sys.version_info < (3, 2):
137
configparser.Configparser = configparser.SafeConfigParser
138
139
version = "1.8.9"
140
stored_state_file = "clients.pickle"
141
142
logger = logging.getLogger()
143
logging.captureWarnings(True) # Show warnings via the logging system
144
syslogger = None
145
146
try:
147
if_nametoindex = ctypes.cdll.LoadLibrary(
148
ctypes.util.find_library("c")).if_nametoindex
149
except (OSError, AttributeError):
150
151
def if_nametoindex(interface):
152
"Get an interface index the hard way, i.e. using fcntl()"
153
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
154
with contextlib.closing(socket.socket()) as s:
155
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
156
struct.pack(b"16s16x", interface))
157
interface_index = struct.unpack("I", ifreq[16:20])[0]
158
return interface_index
159
160
161
def copy_function(func):
162
"""Make a copy of a function"""
163
if sys.version_info.major == 2:
164
return types.FunctionType(func.func_code,
165
func.func_globals,
166
func.func_name,
167
func.func_defaults,
168
func.func_closure)
169
else:
170
return types.FunctionType(func.__code__,
171
func.__globals__,
172
func.__name__,
173
func.__defaults__,
174
func.__closure__)
175
176
177
def initlogger(debug, level=logging.WARNING):
178
"""init logger and add loglevel"""
179
180
global syslogger
181
syslogger = (logging.handlers.SysLogHandler(
182
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
183
address="/dev/log"))
184
syslogger.setFormatter(logging.Formatter
185
('Mandos [%(process)d]: %(levelname)s:'
186
' %(message)s'))
187
logger.addHandler(syslogger)
188
189
if debug:
190
console = logging.StreamHandler()
191
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
192
' [%(process)d]:'
193
' %(levelname)s:'
194
' %(message)s'))
195
logger.addHandler(console)
196
logger.setLevel(level)
197
198
199
class PGPError(Exception):
200
"""Exception if encryption/decryption fails"""
201
pass
202
203
204
class PGPEngine:
205
"""A simple class for OpenPGP symmetric encryption & decryption"""
206
207
def __init__(self):
208
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
209
self.gpg = "gpg"
210
try:
211
output = subprocess.check_output(["gpgconf"])
212
for line in output.splitlines():
213
name, text, path = line.split(b":")
214
if name == b"gpg":
215
self.gpg = path
216
break
217
except OSError as e:
218
if e.errno != errno.ENOENT:
219
raise
220
self.gnupgargs = ['--batch',
221
'--homedir', self.tempdir,
222
'--force-mdc',
223
'--quiet']
224
# Only GPG version 1 has the --no-use-agent option.
225
if self.gpg == b"gpg" or self.gpg.endswith(b"/gpg"):
226
self.gnupgargs.append("--no-use-agent")
227
228
def __enter__(self):
229
return self
230
231
def __exit__(self, exc_type, exc_value, traceback):
232
self._cleanup()
233
return False
234
235
def __del__(self):
236
self._cleanup()
237
238
def _cleanup(self):
239
if self.tempdir is not None:
240
# Delete contents of tempdir
241
for root, dirs, files in os.walk(self.tempdir,
242
topdown=False):
243
for filename in files:
244
os.remove(os.path.join(root, filename))
245
for dirname in dirs:
246
os.rmdir(os.path.join(root, dirname))
247
# Remove tempdir
248
os.rmdir(self.tempdir)
249
self.tempdir = None
250
251
def password_encode(self, password):
252
# Passphrase can not be empty and can not contain newlines or
253
# NUL bytes. So we prefix it and hex encode it.
254
encoded = b"mandos" + binascii.hexlify(password)
255
if len(encoded) > 2048:
256
# GnuPG can't handle long passwords, so encode differently
257
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
258
.replace(b"\n", b"\\n")
259
.replace(b"\0", b"\\x00"))
260
return encoded
261
262
def encrypt(self, data, password):
263
passphrase = self.password_encode(password)
264
with tempfile.NamedTemporaryFile(
265
dir=self.tempdir) as passfile:
266
passfile.write(passphrase)
267
passfile.flush()
268
proc = subprocess.Popen([self.gpg, '--symmetric',
269
'--passphrase-file',
270
passfile.name]
271
+ self.gnupgargs,
272
stdin=subprocess.PIPE,
273
stdout=subprocess.PIPE,
274
stderr=subprocess.PIPE)
275
ciphertext, err = proc.communicate(input=data)
276
if proc.returncode != 0:
277
raise PGPError(err)
278
return ciphertext
279
280
def decrypt(self, data, password):
281
passphrase = self.password_encode(password)
282
with tempfile.NamedTemporaryFile(
283
dir=self.tempdir) as passfile:
284
passfile.write(passphrase)
285
passfile.flush()
286
proc = subprocess.Popen([self.gpg, '--decrypt',
287
'--passphrase-file',
288
passfile.name]
289
+ self.gnupgargs,
290
stdin=subprocess.PIPE,
291
stdout=subprocess.PIPE,
292
stderr=subprocess.PIPE)
293
decrypted_plaintext, err = proc.communicate(input=data)
294
if proc.returncode != 0:
295
raise PGPError(err)
296
return decrypted_plaintext
297
298
299
# Pretend that we have an Avahi module
300
class avahi:
301
"""This isn't so much a class as it is a module-like namespace."""
302
IF_UNSPEC = -1 # avahi-common/address.h
303
PROTO_UNSPEC = -1 # avahi-common/address.h
304
PROTO_INET = 0 # avahi-common/address.h
305
PROTO_INET6 = 1 # avahi-common/address.h
306
DBUS_NAME = "org.freedesktop.Avahi"
307
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
308
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
309
DBUS_PATH_SERVER = "/"
310
311
@staticmethod
312
def string_array_to_txt_array(t):
313
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
314
for s in t), signature="ay")
315
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
316
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
317
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
318
SERVER_INVALID = 0 # avahi-common/defs.h
319
SERVER_REGISTERING = 1 # avahi-common/defs.h
320
SERVER_RUNNING = 2 # avahi-common/defs.h
321
SERVER_COLLISION = 3 # avahi-common/defs.h
322
SERVER_FAILURE = 4 # avahi-common/defs.h
323
103
324
104
325
class AvahiError(Exception):
105
326
def __init__(self, value, *args, **kwargs):
106
327
self.value = value
107
super(AvahiError, self).__init__(value, *args, **kwargs)
108
def __unicode__(self):
109
return unicode(repr(self.value))
328
return super(AvahiError, self).__init__(value, *args,
329
**kwargs)
330
110
331
111
332
class AvahiServiceError(AvahiError):
112
333
pass
113
334
335
114
336
class AvahiGroupError(AvahiError):
115
337
pass
116
338
117
339
118
class AvahiService(object):
340
class AvahiService:
119
341
"""An Avahi (Zeroconf) service.
120
342
121
343
Attributes:
122
344
interface: integer; avahi.IF_UNSPEC or an interface index.
123
345
Used to optionally bind to the specified interface.
124
346
name: string; Example: 'Mandos'
125
347
type: string; Example: '_mandos._tcp'.
126
See <http://www.dns-sd.org/ServiceTypes.html>
348
See <https://www.iana.org/assignments/service-names-port-numbers>
127
349
port: integer; what port to announce
128
350
TXT: list of strings; TXT record for the service
129
351
domain: string; Domain to publish on, default to .local if empty.
135
357
server: D-Bus Server
136
358
bus: dbus.SystemBus()
137
359
"""
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):
360
361
def __init__(self,
362
interface=avahi.IF_UNSPEC,
363
name=None,
364
servicetype=None,
365
port=None,
366
TXT=None,
367
domain="",
368
host="",
369
max_renames=32768,
370
protocol=avahi.PROTO_UNSPEC,
371
bus=None):
142
372
self.interface = interface
143
373
self.name = name
144
374
self.type = servicetype
153
383
self.server = None
154
384
self.bus = bus
155
385
self.entry_group_state_changed_match = None
156
def rename(self):
386
387
def rename(self, remove=True):
157
388
"""Derived from the Avahi example code"""
158
389
if self.rename_count >= self.max_renames:
159
390
logger.critical("No suitable Zeroconf service name found"
160
391
" after %i retries, exiting.",
161
392
self.rename_count)
162
393
raise AvahiServiceError("Too many renames")
163
self.name = unicode(self.server
164
.GetAlternativeServiceName(self.name))
394
self.name = str(
395
self.server.GetAlternativeServiceName(self.name))
396
self.rename_count += 1
165
397
logger.info("Changing Zeroconf service name to %r ...",
166
398
self.name)
167
syslogger.setFormatter(logging.Formatter
168
('Mandos (%s) [%%(process)d]:'
169
' %%(levelname)s: %%(message)s'
170
% self.name))
171
self.remove()
399
if remove:
400
self.remove()
172
401
try:
173
402
self.add()
174
403
except dbus.exceptions.DBusException as error:
175
logger.critical("DBusException: %s", error)
176
self.cleanup()
177
os._exit(1)
178
self.rename_count += 1
404
if (error.get_dbus_name()
405
== "org.freedesktop.Avahi.CollisionError"):
406
logger.info("Local Zeroconf service name collision.")
407
return self.rename(remove=False)
408
else:
409
logger.critical("D-Bus Exception", exc_info=error)
410
self.cleanup()
411
os._exit(1)
412
179
413
def remove(self):
180
414
"""Derived from the Avahi example code"""
181
415
if self.entry_group_state_changed_match is not None:
183
417
self.entry_group_state_changed_match = None
184
418
if self.group is not None:
185
419
self.group.Reset()
420
186
421
def add(self):
187
422
"""Derived from the Avahi example code"""
188
423
self.remove()
193
428
avahi.DBUS_INTERFACE_ENTRY_GROUP)
194
429
self.entry_group_state_changed_match = (
195
430
self.group.connect_to_signal(
196
'StateChanged', self .entry_group_state_changed))
431
'StateChanged', self.entry_group_state_changed))
197
432
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
198
433
self.name, self.type)
199
434
self.group.AddService(
205
440
dbus.UInt16(self.port),
206
441
avahi.string_array_to_txt_array(self.TXT))
207
442
self.group.Commit()
443
208
444
def entry_group_state_changed(self, state, error):
209
445
"""Derived from the Avahi example code"""
210
446
logger.debug("Avahi entry group state change: %i", state)
211
447
212
448
if state == avahi.ENTRY_GROUP_ESTABLISHED:
213
449
logger.debug("Zeroconf service established.")
214
450
elif state == avahi.ENTRY_GROUP_COLLISION:
216
452
self.rename()
217
453
elif state == avahi.ENTRY_GROUP_FAILURE:
218
454
logger.critical("Avahi: Error in group state changed %s",
219
unicode(error))
220
raise AvahiGroupError("State changed: %s"
221
% unicode(error))
455
str(error))
456
raise AvahiGroupError("State changed: {!s}".format(error))
457
222
458
def cleanup(self):
223
459
"""Derived from the Avahi example code"""
224
460
if self.group is not None:
225
461
try:
226
462
self.group.Free()
227
463
except (dbus.exceptions.UnknownMethodException,
228
dbus.exceptions.DBusException) as e:
464
dbus.exceptions.DBusException):
229
465
pass
230
466
self.group = None
231
467
self.remove()
468
232
469
def server_state_changed(self, state, error=None):
233
470
"""Derived from the Avahi example code"""
234
471
logger.debug("Avahi server state change: %i", state)
235
bad_states = { avahi.SERVER_INVALID:
236
"Zeroconf server invalid",
237
avahi.SERVER_REGISTERING: None,
238
avahi.SERVER_COLLISION:
239
"Zeroconf server name collision",
240
avahi.SERVER_FAILURE:
241
"Zeroconf server failure" }
472
bad_states = {
473
avahi.SERVER_INVALID: "Zeroconf server invalid",
474
avahi.SERVER_REGISTERING: None,
475
avahi.SERVER_COLLISION: "Zeroconf server name collision",
476
avahi.SERVER_FAILURE: "Zeroconf server failure",
477
}
242
478
if state in bad_states:
243
479
if bad_states[state] is not None:
244
480
if error is None:
247
483
logger.error(bad_states[state] + ": %r", error)
248
484
self.cleanup()
249
485
elif state == avahi.SERVER_RUNNING:
250
self.add()
486
try:
487
self.add()
488
except dbus.exceptions.DBusException as error:
489
if (error.get_dbus_name()
490
== "org.freedesktop.Avahi.CollisionError"):
491
logger.info("Local Zeroconf service name"
492
" collision.")
493
return self.rename(remove=False)
494
else:
495
logger.critical("D-Bus Exception", exc_info=error)
496
self.cleanup()
497
os._exit(1)
251
498
else:
252
499
if error is None:
253
500
logger.debug("Unknown state: %r", state)
254
501
else:
255
502
logger.debug("Unknown state: %r: %r", state, error)
503
256
504
def activate(self):
257
505
"""Derived from the Avahi example code"""
258
506
if self.server is None:
262
510
follow_name_owner_changes=True),
263
511
avahi.DBUS_INTERFACE_SERVER)
264
512
self.server.connect_to_signal("StateChanged",
265
self.server_state_changed)
513
self.server_state_changed)
266
514
self.server_state_changed(self.server.GetState())
267
515
268
516
269
def _timedelta_to_milliseconds(td):
270
"Convert a datetime.timedelta() to milliseconds"
271
return ((td.days * 24 * 60 * 60 * 1000)
272
+ (td.seconds * 1000)
273
+ (td.microseconds // 1000))
274
275
class Client(object):
517
class AvahiServiceToSyslog(AvahiService):
518
def rename(self, *args, **kwargs):
519
"""Add the new name to the syslog messages"""
520
ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
521
syslogger.setFormatter(logging.Formatter(
522
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
523
.format(self.name)))
524
return ret
525
526
527
# Pretend that we have a GnuTLS module
528
class gnutls:
529
"""This isn't so much a class as it is a module-like namespace."""
530
531
library = ctypes.util.find_library("gnutls")
532
if library is None:
533
library = ctypes.util.find_library("gnutls-deb0")
534
_library = ctypes.cdll.LoadLibrary(library)
535
del library
536
537
# Unless otherwise indicated, the constants and types below are
538
# all from the gnutls/gnutls.h C header file.
539
540
# Constants
541
E_SUCCESS = 0
542
E_INTERRUPTED = -52
543
E_AGAIN = -28
544
CRT_OPENPGP = 2
545
CRT_RAWPK = 3
546
CLIENT = 2
547
SHUT_RDWR = 0
548
CRD_CERTIFICATE = 1
549
E_NO_CERTIFICATE_FOUND = -49
550
X509_FMT_DER = 0
551
NO_TICKETS = 1<<10
552
ENABLE_RAWPK = 1<<18
553
CTYPE_PEERS = 3
554
KEYID_USE_SHA256 = 1 # gnutls/x509.h
555
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
556
557
# Types
558
class session_int(ctypes.Structure):
559
_fields_ = []
560
session_t = ctypes.POINTER(session_int)
561
562
class certificate_credentials_st(ctypes.Structure):
563
_fields_ = []
564
certificate_credentials_t = ctypes.POINTER(
565
certificate_credentials_st)
566
certificate_type_t = ctypes.c_int
567
568
class datum_t(ctypes.Structure):
569
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
570
('size', ctypes.c_uint)]
571
572
class openpgp_crt_int(ctypes.Structure):
573
_fields_ = []
574
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
575
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
576
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
577
credentials_type_t = ctypes.c_int
578
transport_ptr_t = ctypes.c_void_p
579
close_request_t = ctypes.c_int
580
581
# Exceptions
582
class Error(Exception):
583
def __init__(self, message=None, code=None, args=()):
584
# Default usage is by a message string, but if a return
585
# code is passed, convert it to a string with
586
# gnutls.strerror()
587
self.code = code
588
if message is None and code is not None:
589
message = gnutls.strerror(code)
590
return super(gnutls.Error, self).__init__(
591
message, *args)
592
593
class CertificateSecurityError(Error):
594
pass
595
596
# Classes
597
class Credentials:
598
def __init__(self):
599
self._c_object = gnutls.certificate_credentials_t()
600
gnutls.certificate_allocate_credentials(
601
ctypes.byref(self._c_object))
602
self.type = gnutls.CRD_CERTIFICATE
603
604
def __del__(self):
605
gnutls.certificate_free_credentials(self._c_object)
606
607
class ClientSession:
608
def __init__(self, socket, credentials=None):
609
self._c_object = gnutls.session_t()
610
gnutls_flags = gnutls.CLIENT
611
if gnutls.check_version(b"3.5.6"):
612
gnutls_flags |= gnutls.NO_TICKETS
613
if gnutls.has_rawpk:
614
gnutls_flags |= gnutls.ENABLE_RAWPK
615
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
616
del gnutls_flags
617
gnutls.set_default_priority(self._c_object)
618
gnutls.transport_set_ptr(self._c_object, socket.fileno())
619
gnutls.handshake_set_private_extensions(self._c_object,
620
True)
621
self.socket = socket
622
if credentials is None:
623
credentials = gnutls.Credentials()
624
gnutls.credentials_set(self._c_object, credentials.type,
625
ctypes.cast(credentials._c_object,
626
ctypes.c_void_p))
627
self.credentials = credentials
628
629
def __del__(self):
630
gnutls.deinit(self._c_object)
631
632
def handshake(self):
633
return gnutls.handshake(self._c_object)
634
635
def send(self, data):
636
data = bytes(data)
637
data_len = len(data)
638
while data_len > 0:
639
data_len -= gnutls.record_send(self._c_object,
640
data[-data_len:],
641
data_len)
642
643
def bye(self):
644
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
645
646
# Error handling functions
647
def _error_code(result):
648
"""A function to raise exceptions on errors, suitable
649
for the 'restype' attribute on ctypes functions"""
650
if result >= 0:
651
return result
652
if result == gnutls.E_NO_CERTIFICATE_FOUND:
653
raise gnutls.CertificateSecurityError(code=result)
654
raise gnutls.Error(code=result)
655
656
def _retry_on_error(result, func, arguments):
657
"""A function to retry on some errors, suitable
658
for the 'errcheck' attribute on ctypes functions"""
659
while result < 0:
660
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
661
return _error_code(result)
662
result = func(*arguments)
663
return result
664
665
# Unless otherwise indicated, the function declarations below are
666
# all from the gnutls/gnutls.h C header file.
667
668
# Functions
669
priority_set_direct = _library.gnutls_priority_set_direct
670
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
671
ctypes.POINTER(ctypes.c_char_p)]
672
priority_set_direct.restype = _error_code
673
674
init = _library.gnutls_init
675
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
676
init.restype = _error_code
677
678
set_default_priority = _library.gnutls_set_default_priority
679
set_default_priority.argtypes = [session_t]
680
set_default_priority.restype = _error_code
681
682
record_send = _library.gnutls_record_send
683
record_send.argtypes = [session_t, ctypes.c_void_p,
684
ctypes.c_size_t]
685
record_send.restype = ctypes.c_ssize_t
686
record_send.errcheck = _retry_on_error
687
688
certificate_allocate_credentials = (
689
_library.gnutls_certificate_allocate_credentials)
690
certificate_allocate_credentials.argtypes = [
691
ctypes.POINTER(certificate_credentials_t)]
692
certificate_allocate_credentials.restype = _error_code
693
694
certificate_free_credentials = (
695
_library.gnutls_certificate_free_credentials)
696
certificate_free_credentials.argtypes = [
697
certificate_credentials_t]
698
certificate_free_credentials.restype = None
699
700
handshake_set_private_extensions = (
701
_library.gnutls_handshake_set_private_extensions)
702
handshake_set_private_extensions.argtypes = [session_t,
703
ctypes.c_int]
704
handshake_set_private_extensions.restype = None
705
706
credentials_set = _library.gnutls_credentials_set
707
credentials_set.argtypes = [session_t, credentials_type_t,
708
ctypes.c_void_p]
709
credentials_set.restype = _error_code
710
711
strerror = _library.gnutls_strerror
712
strerror.argtypes = [ctypes.c_int]
713
strerror.restype = ctypes.c_char_p
714
715
certificate_type_get = _library.gnutls_certificate_type_get
716
certificate_type_get.argtypes = [session_t]
717
certificate_type_get.restype = _error_code
718
719
certificate_get_peers = _library.gnutls_certificate_get_peers
720
certificate_get_peers.argtypes = [session_t,
721
ctypes.POINTER(ctypes.c_uint)]
722
certificate_get_peers.restype = ctypes.POINTER(datum_t)
723
724
global_set_log_level = _library.gnutls_global_set_log_level
725
global_set_log_level.argtypes = [ctypes.c_int]
726
global_set_log_level.restype = None
727
728
global_set_log_function = _library.gnutls_global_set_log_function
729
global_set_log_function.argtypes = [log_func]
730
global_set_log_function.restype = None
731
732
deinit = _library.gnutls_deinit
733
deinit.argtypes = [session_t]
734
deinit.restype = None
735
736
handshake = _library.gnutls_handshake
737
handshake.argtypes = [session_t]
738
handshake.restype = _error_code
739
handshake.errcheck = _retry_on_error
740
741
transport_set_ptr = _library.gnutls_transport_set_ptr
742
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
743
transport_set_ptr.restype = None
744
745
bye = _library.gnutls_bye
746
bye.argtypes = [session_t, close_request_t]
747
bye.restype = _error_code
748
bye.errcheck = _retry_on_error
749
750
check_version = _library.gnutls_check_version
751
check_version.argtypes = [ctypes.c_char_p]
752
check_version.restype = ctypes.c_char_p
753
754
_need_version = b"3.3.0"
755
if check_version(_need_version) is None:
756
raise self.Error("Needs GnuTLS {} or later"
757
.format(_need_version))
758
759
_tls_rawpk_version = b"3.6.6"
760
has_rawpk = bool(check_version(_tls_rawpk_version))
761
762
if has_rawpk:
763
# Types
764
class pubkey_st(ctypes.Structure):
765
_fields = []
766
pubkey_t = ctypes.POINTER(pubkey_st)
767
768
x509_crt_fmt_t = ctypes.c_int
769
770
# All the function declarations below are from gnutls/abstract.h
771
pubkey_init = _library.gnutls_pubkey_init
772
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
773
pubkey_init.restype = _error_code
774
775
pubkey_import = _library.gnutls_pubkey_import
776
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
777
x509_crt_fmt_t]
778
pubkey_import.restype = _error_code
779
780
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
781
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
782
ctypes.POINTER(ctypes.c_ubyte),
783
ctypes.POINTER(ctypes.c_size_t)]
784
pubkey_get_key_id.restype = _error_code
785
786
pubkey_deinit = _library.gnutls_pubkey_deinit
787
pubkey_deinit.argtypes = [pubkey_t]
788
pubkey_deinit.restype = None
789
else:
790
# All the function declarations below are from gnutls/openpgp.h
791
792
openpgp_crt_init = _library.gnutls_openpgp_crt_init
793
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
794
openpgp_crt_init.restype = _error_code
795
796
openpgp_crt_import = _library.gnutls_openpgp_crt_import
797
openpgp_crt_import.argtypes = [openpgp_crt_t,
798
ctypes.POINTER(datum_t),
799
openpgp_crt_fmt_t]
800
openpgp_crt_import.restype = _error_code
801
802
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
803
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
804
ctypes.POINTER(ctypes.c_uint)]
805
openpgp_crt_verify_self.restype = _error_code
806
807
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
808
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
809
openpgp_crt_deinit.restype = None
810
811
openpgp_crt_get_fingerprint = (
812
_library.gnutls_openpgp_crt_get_fingerprint)
813
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
814
ctypes.c_void_p,
815
ctypes.POINTER(
816
ctypes.c_size_t)]
817
openpgp_crt_get_fingerprint.restype = _error_code
818
819
if check_version(b"3.6.4"):
820
certificate_type_get2 = _library.gnutls_certificate_type_get2
821
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
822
certificate_type_get2.restype = _error_code
823
824
# Remove non-public functions
825
del _error_code, _retry_on_error
826
827
828
def call_pipe(connection, # : multiprocessing.Connection
829
func, *args, **kwargs):
830
"""This function is meant to be called by multiprocessing.Process
831
832
This function runs func(*args, **kwargs), and writes the resulting
833
return value on the provided multiprocessing.Connection.
834
"""
835
connection.send(func(*args, **kwargs))
836
connection.close()
837
838
839
class Client:
276
840
"""A representation of a client host served by this server.
277
841
278
842
Attributes:
279
_approved: bool(); 'None' if not yet approved/disapproved
843
approved: bool(); 'None' if not yet approved/disapproved
280
844
approval_delay: datetime.timedelta(); Time to wait for approval
281
845
approval_duration: datetime.timedelta(); Duration of one approval
282
checker: subprocess.Popen(); a running checker process used
283
to see if the client lives.
284
'None' if no process is running.
285
checker_callback_tag: a gobject event source tag, or None
846
checker: multiprocessing.Process(); a running checker process used
847
to see if the client lives. 'None' if no process is
848
running.
849
checker_callback_tag: a GLib event source tag, or None
286
850
checker_command: string; External command which is run to check
287
851
if client lives. %() expansions are done at
288
852
runtime with vars(self) as dict, so that for
289
853
instance %(name)s can be used in the command.
290
checker_initiator_tag: a gobject event source tag, or None
854
checker_initiator_tag: a GLib event source tag, or None
291
855
created: datetime.datetime(); (UTC) object creation
856
client_structure: Object describing what attributes a client has
857
and is used for storing the client at exit
292
858
current_checker_command: string; current running checker_command
293
disable_hook: If set, called by disable() as disable_hook(self)
294
disable_initiator_tag: a gobject event source tag, or None
859
disable_initiator_tag: a GLib event source tag, or None
295
860
enabled: bool()
296
861
fingerprint: string (40 or 32 hexadecimal digits); used to
297
uniquely identify the client
862
uniquely identify an OpenPGP client
863
key_id: string (64 hexadecimal digits); used to uniquely identify
864
a client using raw public keys
298
865
host: string; available for use by the checker command
299
866
interval: datetime.timedelta(); How often to start a new checker
300
867
last_approval_request: datetime.datetime(); (UTC) or None
301
868
last_checked_ok: datetime.datetime(); (UTC) or None
302
last_enabled: datetime.datetime(); (UTC)
869
last_checker_status: integer between 0 and 255 reflecting exit
870
status of last checker. -1 reflects crashed
871
checker, -2 means no checker completed yet.
872
last_checker_signal: The signal which killed the last checker, if
873
last_checker_status is -1
874
last_enabled: datetime.datetime(); (UTC) or None
303
875
name: string; from the config file, used in log messages and
304
876
D-Bus identifiers
305
877
secret: bytestring; sent verbatim (over TLS) to client
306
878
timeout: datetime.timedelta(); How long from last_checked_ok
307
879
until this client is disabled
308
extended_timeout: extra long timeout when password has been sent
880
extended_timeout: extra long timeout when secret has been sent
309
881
runtime_expansions: Allowed attributes for runtime expansion.
310
882
expires: datetime.datetime(); time (UTC) when a client will be
311
883
disabled, or None
884
server_settings: The server_settings dict from main()
312
885
"""
313
886
314
887
runtime_expansions = ("approval_delay", "approval_duration",
315
"created", "enabled", "fingerprint",
316
"host", "interval", "last_checked_ok",
888
"created", "enabled", "expires", "key_id",
889
"fingerprint", "host", "interval",
890
"last_approval_request", "last_checked_ok",
317
891
"last_enabled", "name", "timeout")
318
319
def timeout_milliseconds(self):
320
"Return the 'timeout' attribute in milliseconds"
321
return _timedelta_to_milliseconds(self.timeout)
322
323
def extended_timeout_milliseconds(self):
324
"Return the 'extended_timeout' attribute in milliseconds"
325
return _timedelta_to_milliseconds(self.extended_timeout)
326
327
def interval_milliseconds(self):
328
"Return the 'interval' attribute in milliseconds"
329
return _timedelta_to_milliseconds(self.interval)
330
331
def approval_delay_milliseconds(self):
332
return _timedelta_to_milliseconds(self.approval_delay)
333
334
def __init__(self, name = None, disable_hook=None, config=None):
335
"""Note: the 'checker' key in 'config' sets the
336
'checker_command' attribute and *not* the 'checker'
337
attribute."""
892
client_defaults = {
893
"timeout": "PT5M",
894
"extended_timeout": "PT15M",
895
"interval": "PT2M",
896
"checker": "fping -q -- %%(host)s",
897
"host": "",
898
"approval_delay": "PT0S",
899
"approval_duration": "PT1S",
900
"approved_by_default": "True",
901
"enabled": "True",
902
}
903
904
@staticmethod
905
def config_parser(config):
906
"""Construct a new dict of client settings of this form:
907
{ client_name: {setting_name: value, ...}, ...}
908
with exceptions for any special settings as defined above.
909
NOTE: Must be a pure function. Must return the same result
910
value given the same arguments.
911
"""
912
settings = {}
913
for client_name in config.sections():
914
section = dict(config.items(client_name))
915
client = settings[client_name] = {}
916
917
client["host"] = section["host"]
918
# Reformat values from string types to Python types
919
client["approved_by_default"] = config.getboolean(
920
client_name, "approved_by_default")
921
client["enabled"] = config.getboolean(client_name,
922
"enabled")
923
924
# Uppercase and remove spaces from key_id and fingerprint
925
# for later comparison purposes with return value from the
926
# key_id() and fingerprint() functions
927
client["key_id"] = (section.get("key_id", "").upper()
928
.replace(" ", ""))
929
client["fingerprint"] = (section["fingerprint"].upper()
930
.replace(" ", ""))
931
if "secret" in section:
932
client["secret"] = codecs.decode(section["secret"]
933
.encode("utf-8"),
934
"base64")
935
elif "secfile" in section:
936
with open(os.path.expanduser(os.path.expandvars
937
(section["secfile"])),
938
"rb") as secfile:
939
client["secret"] = secfile.read()
940
else:
941
raise TypeError("No secret or secfile for section {}"
942
.format(section))
943
client["timeout"] = string_to_delta(section["timeout"])
944
client["extended_timeout"] = string_to_delta(
945
section["extended_timeout"])
946
client["interval"] = string_to_delta(section["interval"])
947
client["approval_delay"] = string_to_delta(
948
section["approval_delay"])
949
client["approval_duration"] = string_to_delta(
950
section["approval_duration"])
951
client["checker_command"] = section["checker"]
952
client["last_approval_request"] = None
953
client["last_checked_ok"] = None
954
client["last_checker_status"] = -2
955
956
return settings
957
958
def __init__(self, settings, name=None, server_settings=None):
338
959
self.name = name
339
if config is None:
340
config = {}
960
if server_settings is None:
961
server_settings = {}
962
self.server_settings = server_settings
963
# adding all client settings
964
for setting, value in settings.items():
965
setattr(self, setting, value)
966
967
if self.enabled:
968
if not hasattr(self, "last_enabled"):
969
self.last_enabled = datetime.datetime.utcnow()
970
if not hasattr(self, "expires"):
971
self.expires = (datetime.datetime.utcnow()
972
+ self.timeout)
973
else:
974
self.last_enabled = None
975
self.expires = None
976
341
977
logger.debug("Creating client %r", self.name)
342
# Uppercase and remove spaces from fingerprint for later
343
# comparison purposes with return value from the fingerprint()
344
# function
345
self.fingerprint = (config["fingerprint"].upper()
346
.replace(" ", ""))
978
logger.debug(" Key ID: %s", self.key_id)
347
979
logger.debug(" Fingerprint: %s", self.fingerprint)
348
if "secret" in config:
349
self.secret = config["secret"].decode("base64")
350
elif "secfile" in config:
351
with open(os.path.expanduser(os.path.expandvars
352
(config["secfile"])),
353
"rb") as secfile:
354
self.secret = secfile.read()
355
else:
356
raise TypeError("No secret or secfile for client %s"
357
% self.name)
358
self.host = config.get("host", "")
359
self.created = datetime.datetime.utcnow()
360
self.enabled = False
361
self.last_approval_request = None
362
self.last_enabled = None
363
self.last_checked_ok = None
364
self.timeout = string_to_delta(config["timeout"])
365
self.extended_timeout = string_to_delta(config
366
["extended_timeout"])
367
self.interval = string_to_delta(config["interval"])
368
self.disable_hook = disable_hook
980
self.created = settings.get("created",
981
datetime.datetime.utcnow())
982
983
# attributes specific for this server instance
369
984
self.checker = None
370
985
self.checker_initiator_tag = None
371
986
self.disable_initiator_tag = None
372
self.expires = None
373
987
self.checker_callback_tag = None
374
self.checker_command = config["checker"]
375
988
self.current_checker_command = None
376
self.last_connect = None
377
self._approved = None
378
self.approved_by_default = config.get("approved_by_default",
379
True)
989
self.approved = None
380
990
self.approvals_pending = 0
381
self.approval_delay = string_to_delta(
382
config["approval_delay"])
383
self.approval_duration = string_to_delta(
384
config["approval_duration"])
385
self.changedstate = (multiprocessing_manager
386
.Condition(multiprocessing_manager
387
.Lock()))
388
991
self.changedstate = multiprocessing_manager.Condition(
992
multiprocessing_manager.Lock())
993
self.client_structure = [attr
994
for attr in self.__dict__.keys()
995
if not attr.startswith("_")]
996
self.client_structure.append("client_structure")
997
998
for name, t in inspect.getmembers(
999
type(self), lambda obj: isinstance(obj, property)):
1000
if not name.startswith("_"):
1001
self.client_structure.append(name)
1002
1003
# Send notice to process children that client state has changed
389
1004
def send_changedstate(self):
390
self.changedstate.acquire()
391
self.changedstate.notify_all()
392
self.changedstate.release()
393
1005
with self.changedstate:
1006
self.changedstate.notify_all()
1007
394
1008
def enable(self):
395
1009
"""Start this client's checker and timeout hooks"""
396
1010
if getattr(self, "enabled", False):
397
1011
# Already enabled
398
1012
return
399
self.send_changedstate()
400
# Schedule a new checker to be started an 'interval' from now,
401
# and every interval from then on.
402
self.checker_initiator_tag = (gobject.timeout_add
403
(self.interval_milliseconds(),
404
self.start_checker))
405
# Schedule a disable() when 'timeout' has passed
406
1013
self.expires = datetime.datetime.utcnow() + self.timeout
407
self.disable_initiator_tag = (gobject.timeout_add
408
(self.timeout_milliseconds(),
409
self.disable))
410
1014
self.enabled = True
411
1015
self.last_enabled = datetime.datetime.utcnow()
412
# Also start a new checker *right now*.
413
self.start_checker()
414
1016
self.init_checker()
1017
self.send_changedstate()
1018
415
1019
def disable(self, quiet=True):
416
1020
"""Disable this client."""
417
1021
if not getattr(self, "enabled", False):
418
1022
return False
419
1023
if not quiet:
420
self.send_changedstate()
421
if not quiet:
422
1024
logger.info("Disabling client %s", self.name)
423
if getattr(self, "disable_initiator_tag", False):
424
gobject.source_remove(self.disable_initiator_tag)
1025
if getattr(self, "disable_initiator_tag", None) is not None:
1026
GLib.source_remove(self.disable_initiator_tag)
425
1027
self.disable_initiator_tag = None
426
1028
self.expires = None
427
if getattr(self, "checker_initiator_tag", False):
428
gobject.source_remove(self.checker_initiator_tag)
1029
if getattr(self, "checker_initiator_tag", None) is not None:
1030
GLib.source_remove(self.checker_initiator_tag)
429
1031
self.checker_initiator_tag = None
430
1032
self.stop_checker()
431
if self.disable_hook:
432
self.disable_hook(self)
433
1033
self.enabled = False
434
# Do not run this again if called by a gobject.timeout_add
1034
if not quiet:
1035
self.send_changedstate()
1036
# Do not run this again if called by a GLib.timeout_add
435
1037
return False
436
1038
437
1039
def __del__(self):
438
self.disable_hook = None
439
1040
self.disable()
440
441
def checker_callback(self, pid, condition, command):
1041
1042
def init_checker(self):
1043
# Schedule a new checker to be started an 'interval' from now,
1044
# and every interval from then on.
1045
if self.checker_initiator_tag is not None:
1046
GLib.source_remove(self.checker_initiator_tag)
1047
self.checker_initiator_tag = GLib.timeout_add(
1048
random.randrange(int(self.interval.total_seconds() * 1000
1049
+ 1)),
1050
self.start_checker)
1051
# Schedule a disable() when 'timeout' has passed
1052
if self.disable_initiator_tag is not None:
1053
GLib.source_remove(self.disable_initiator_tag)
1054
self.disable_initiator_tag = GLib.timeout_add(
1055
int(self.timeout.total_seconds() * 1000), self.disable)
1056
# Also start a new checker *right now*.
1057
self.start_checker()
1058
1059
def checker_callback(self, source, condition, connection,
1060
command):
442
1061
"""The checker has completed, so take appropriate actions."""
1062
# Read return code from connection (see call_pipe)
1063
returncode = connection.recv()
1064
connection.close()
1065
if self.checker is not None:
1066
self.checker.join()
443
1067
self.checker_callback_tag = None
444
1068
self.checker = None
445
if os.WIFEXITED(condition):
446
exitstatus = os.WEXITSTATUS(condition)
447
if exitstatus == 0:
1069
1070
if returncode >= 0:
1071
self.last_checker_status = returncode
1072
self.last_checker_signal = None
1073
if self.last_checker_status == 0:
448
1074
logger.info("Checker for %(name)s succeeded",
449
1075
vars(self))
450
1076
self.checked_ok()
451
1077
else:
452
logger.info("Checker for %(name)s failed",
453
vars(self))
1078
logger.info("Checker for %(name)s failed", vars(self))
454
1079
else:
1080
self.last_checker_status = -1
1081
self.last_checker_signal = -returncode
455
1082
logger.warning("Checker for %(name)s crashed?",
456
1083
vars(self))
457
458
def checked_ok(self, timeout=None):
459
"""Bump up the timeout for this client.
460
461
This should only be called when the client has been seen,
462
alive and well.
463
"""
1084
return False
1085
1086
def checked_ok(self):
1087
"""Assert that the client has been seen, alive and well."""
1088
self.last_checked_ok = datetime.datetime.utcnow()
1089
self.last_checker_status = 0
1090
self.last_checker_signal = None
1091
self.bump_timeout()
1092
1093
def bump_timeout(self, timeout=None):
1094
"""Bump up the timeout for this client."""
464
1095
if timeout is None:
465
1096
timeout = self.timeout
466
self.last_checked_ok = datetime.datetime.utcnow()
467
gobject.source_remove(self.disable_initiator_tag)
468
self.disable_initiator_tag = (gobject.timeout_add
469
(_timedelta_to_milliseconds
470
(timeout), self.disable))
471
self.expires = datetime.datetime.utcnow() + timeout
472
1097
if self.disable_initiator_tag is not None:
1098
GLib.source_remove(self.disable_initiator_tag)
1099
self.disable_initiator_tag = None
1100
if getattr(self, "enabled", False):
1101
self.disable_initiator_tag = GLib.timeout_add(
1102
int(timeout.total_seconds() * 1000), self.disable)
1103
self.expires = datetime.datetime.utcnow() + timeout
1104
473
1105
def need_approval(self):
474
1106
self.last_approval_request = datetime.datetime.utcnow()
475
1107
476
1108
def start_checker(self):
477
1109
"""Start a new checker subprocess if one is not running.
478
1110
479
1111
If a checker already exists, leave it running and do
480
1112
nothing."""
481
1113
# The reason for not killing a running checker is that if we
482
# did that, then if a checker (for some reason) started
483
# running slowly and taking more than 'interval' time, the
484
# client would inevitably timeout, since no checker would get
485
# a chance to run to completion. If we instead leave running
1114
# did that, and if a checker (for some reason) started running
1115
# slowly and taking more than 'interval' time, then the client
1116
# would inevitably timeout, since no checker would get a
1117
# chance to run to completion. If we instead leave running
486
1118
# checkers alone, the checker would have to take more time
487
1119
# than 'timeout' for the client to be disabled, which is as it
488
1120
# should be.
489
490
# If a checker exists, make sure it is not a zombie
491
try:
492
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
493
except (AttributeError, OSError) as error:
494
if (isinstance(error, OSError)
495
and error.errno != errno.ECHILD):
496
raise error
497
else:
498
if pid:
499
logger.warning("Checker was a zombie")
500
gobject.source_remove(self.checker_callback_tag)
501
self.checker_callback(pid, status,
502
self.current_checker_command)
1121
1122
if self.checker is not None and not self.checker.is_alive():
1123
logger.warning("Checker was not alive; joining")
1124
self.checker.join()
1125
self.checker = None
503
1126
# Start a new checker if needed
504
1127
if self.checker is None:
1128
# Escape attributes for the shell
1129
escaped_attrs = {
1130
attr: re.escape(str(getattr(self, attr)))
1131
for attr in self.runtime_expansions}
505
1132
try:
506
# In case checker_command has exactly one % operator
507
command = self.checker_command % self.host
508
except TypeError:
509
# Escape attributes for the shell
510
escaped_attrs = dict(
511
(attr,
512
re.escape(unicode(str(getattr(self, attr, "")),
513
errors=
514
'replace')))
515
for attr in
516
self.runtime_expansions)
517
518
try:
519
command = self.checker_command % escaped_attrs
520
except TypeError as error:
521
logger.error('Could not format string "%s":'
522
' %s', self.checker_command, error)
523
return True # Try again later
1133
command = self.checker_command % escaped_attrs
1134
except TypeError as error:
1135
logger.error('Could not format string "%s"',
1136
self.checker_command,
1137
exc_info=error)
1138
return True # Try again later
524
1139
self.current_checker_command = command
525
try:
526
logger.info("Starting checker %r for %s",
527
command, self.name)
528
# We don't need to redirect stdout and stderr, since
529
# in normal mode, that is already done by daemon(),
530
# and in debug mode we don't want to. (Stdin is
531
# always replaced by /dev/null.)
532
self.checker = subprocess.Popen(command,
533
close_fds=True,
534
shell=True, cwd="/")
535
self.checker_callback_tag = (gobject.child_watch_add
536
(self.checker.pid,
537
self.checker_callback,
538
data=command))
539
# The checker may have completed before the gobject
540
# watch was added. Check for this.
541
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
542
if pid:
543
gobject.source_remove(self.checker_callback_tag)
544
self.checker_callback(pid, status, command)
545
except OSError as error:
546
logger.error("Failed to start subprocess: %s",
547
error)
548
# Re-run this periodically if run by gobject.timeout_add
1140
logger.info("Starting checker %r for %s", command,
1141
self.name)
1142
# We don't need to redirect stdout and stderr, since
1143
# in normal mode, that is already done by daemon(),
1144
# and in debug mode we don't want to. (Stdin is
1145
# always replaced by /dev/null.)
1146
# The exception is when not debugging but nevertheless
1147
# running in the foreground; use the previously
1148
# created wnull.
1149
popen_args = {"close_fds": True,
1150
"shell": True,
1151
"cwd": "/"}
1152
if (not self.server_settings["debug"]
1153
and self.server_settings["foreground"]):
1154
popen_args.update({"stdout": wnull,
1155
"stderr": wnull})
1156
pipe = multiprocessing.Pipe(duplex=False)
1157
self.checker = multiprocessing.Process(
1158
target=call_pipe,
1159
args=(pipe[1], subprocess.call, command),
1160
kwargs=popen_args)
1161
self.checker.start()
1162
self.checker_callback_tag = GLib.io_add_watch(
1163
GLib.IOChannel.unix_new(pipe[0].fileno()),
1164
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
1165
self.checker_callback, pipe[0], command)
1166
# Re-run this periodically if run by GLib.timeout_add
549
1167
return True
550
1168
551
1169
def stop_checker(self):
552
1170
"""Force the checker process, if any, to stop."""
553
1171
if self.checker_callback_tag:
554
gobject.source_remove(self.checker_callback_tag)
1172
GLib.source_remove(self.checker_callback_tag)
555
1173
self.checker_callback_tag = None
556
1174
if getattr(self, "checker", None) is None:
557
1175
return
558
1176
logger.debug("Stopping checker for %(name)s", vars(self))
559
try:
560
os.kill(self.checker.pid, signal.SIGTERM)
561
#time.sleep(0.5)
562
#if self.checker.poll() is None:
563
# os.kill(self.checker.pid, signal.SIGKILL)
564
except OSError as error:
565
if error.errno != errno.ESRCH: # No such process
566
raise
1177
self.checker.terminate()
567
1178
self.checker = None
568
1179
569
1180
570
def dbus_service_property(dbus_interface, signature="v",
571
access="readwrite", byte_arrays=False):
1181
def dbus_service_property(dbus_interface,
1182
signature="v",
1183
access="readwrite",
1184
byte_arrays=False):
572
1185
"""Decorators for marking methods of a DBusObjectWithProperties to
573
1186
become properties on the D-Bus.
574
1187
575
1188
The decorated method will be called with no arguments by "Get"
576
1189
and with one argument by "Set".
577
1190
578
1191
The parameters, where they are supported, are the same as
579
1192
dbus.service.method, except there is only "signature", since the
580
1193
type from Get() and the type sent to Set() is the same.
583
1196
# "Set" method, so we fail early here:
584
1197
if byte_arrays and signature != "ay":
585
1198
raise ValueError("Byte arrays not supported for non-'ay'"
586
" signature %r" % signature)
1199
" signature {!r}".format(signature))
1200
587
1201
def decorator(func):
588
1202
func._dbus_is_property = True
589
1203
func._dbus_interface = dbus_interface
592
1206
func._dbus_name = func.__name__
593
1207
if func._dbus_name.endswith("_dbus_property"):
594
1208
func._dbus_name = func._dbus_name[:-14]
595
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
596
return func
1209
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
1210
return func
1211
1212
return decorator
1213
1214
1215
def dbus_interface_annotations(dbus_interface):
1216
"""Decorator for marking functions returning interface annotations
1217
1218
Usage:
1219
1220
@dbus_interface_annotations("org.example.Interface")
1221
def _foo(self): # Function name does not matter
1222
return {"org.freedesktop.DBus.Deprecated": "true",
1223
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1224
"false"}
1225
"""
1226
1227
def decorator(func):
1228
func._dbus_is_interface = True
1229
func._dbus_interface = dbus_interface
1230
func._dbus_name = dbus_interface
1231
return func
1232
1233
return decorator
1234
1235
1236
def dbus_annotations(annotations):
1237
"""Decorator to annotate D-Bus methods, signals or properties
1238
Usage:
1239
1240
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1241
"org.freedesktop.DBus.Property."
1242
"EmitsChangedSignal": "false"})
1243
@dbus_service_property("org.example.Interface", signature="b",
1244
access="r")
1245
def Property_dbus_property(self):
1246
return dbus.Boolean(False)
1247
1248
See also the DBusObjectWithAnnotations class.
1249
"""
1250
1251
def decorator(func):
1252
func._dbus_annotations = annotations
1253
return func
1254
597
1255
return decorator
598
1256
599
1257
600
1258
class DBusPropertyException(dbus.exceptions.DBusException):
601
1259
"""A base class for D-Bus property-related exceptions
602
1260
"""
603
def __unicode__(self):
604
return unicode(str(self))
1261
pass
605
1262
606
1263
607
1264
class DBusPropertyAccessException(DBusPropertyException):
616
1273
pass
617
1274
618
1275
619
class DBusObjectWithProperties(dbus.service.Object):
1276
class DBusObjectWithAnnotations(dbus.service.Object):
1277
"""A D-Bus object with annotations.
1278
1279
Classes inheriting from this can use the dbus_annotations
1280
decorator to add annotations to methods or signals.
1281
"""
1282
1283
@staticmethod
1284
def _is_dbus_thing(thing):
1285
"""Returns a function testing if an attribute is a D-Bus thing
1286
1287
If called like _is_dbus_thing("method") it returns a function
1288
suitable for use as predicate to inspect.getmembers().
1289
"""
1290
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1291
False)
1292
1293
def _get_all_dbus_things(self, thing):
1294
"""Returns a generator of (name, attribute) pairs
1295
"""
1296
return ((getattr(athing.__get__(self), "_dbus_name", name),
1297
athing.__get__(self))
1298
for cls in self.__class__.__mro__
1299
for name, athing in
1300
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1301
1302
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1303
out_signature="s",
1304
path_keyword='object_path',
1305
connection_keyword='connection')
1306
def Introspect(self, object_path, connection):
1307
"""Overloading of standard D-Bus method.
1308
1309
Inserts annotation tags on methods and signals.
1310
"""
1311
xmlstring = dbus.service.Object.Introspect(self, object_path,
1312
connection)
1313
try:
1314
document = xml.dom.minidom.parseString(xmlstring)
1315
1316
for if_tag in document.getElementsByTagName("interface"):
1317
# Add annotation tags
1318
for typ in ("method", "signal"):
1319
for tag in if_tag.getElementsByTagName(typ):
1320
annots = dict()
1321
for name, prop in (self.
1322
_get_all_dbus_things(typ)):
1323
if (name == tag.getAttribute("name")
1324
and prop._dbus_interface
1325
== if_tag.getAttribute("name")):
1326
annots.update(getattr(
1327
prop, "_dbus_annotations", {}))
1328
for name, value in annots.items():
1329
ann_tag = document.createElement(
1330
"annotation")
1331
ann_tag.setAttribute("name", name)
1332
ann_tag.setAttribute("value", value)
1333
tag.appendChild(ann_tag)
1334
# Add interface annotation tags
1335
for annotation, value in dict(
1336
itertools.chain.from_iterable(
1337
annotations().items()
1338
for name, annotations
1339
in self._get_all_dbus_things("interface")
1340
if name == if_tag.getAttribute("name")
1341
)).items():
1342
ann_tag = document.createElement("annotation")
1343
ann_tag.setAttribute("name", annotation)
1344
ann_tag.setAttribute("value", value)
1345
if_tag.appendChild(ann_tag)
1346
# Fix argument name for the Introspect method itself
1347
if (if_tag.getAttribute("name")
1348
== dbus.INTROSPECTABLE_IFACE):
1349
for cn in if_tag.getElementsByTagName("method"):
1350
if cn.getAttribute("name") == "Introspect":
1351
for arg in cn.getElementsByTagName("arg"):
1352
if (arg.getAttribute("direction")
1353
== "out"):
1354
arg.setAttribute("name",
1355
"xml_data")
1356
xmlstring = document.toxml("utf-8")
1357
document.unlink()
1358
except (AttributeError, xml.dom.DOMException,
1359
xml.parsers.expat.ExpatError) as error:
1360
logger.error("Failed to override Introspection method",
1361
exc_info=error)
1362
return xmlstring
1363
1364
1365
class DBusObjectWithProperties(DBusObjectWithAnnotations):
620
1366
"""A D-Bus object with properties.
621
1367
622
1368
Classes inheriting from this can use the dbus_service_property
623
1369
decorator to expose methods as D-Bus properties. It exposes the
624
1370
standard Get(), Set(), and GetAll() methods on the D-Bus.
625
1371
"""
626
627
@staticmethod
628
def _is_dbus_property(obj):
629
return getattr(obj, "_dbus_is_property", False)
630
631
def _get_all_dbus_properties(self):
632
"""Returns a generator of (name, attribute) pairs
633
"""
634
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
635
for cls in self.__class__.__mro__
636
for name, prop in
637
inspect.getmembers(cls, self._is_dbus_property))
638
1372
639
1373
def _get_dbus_property(self, interface_name, property_name):
640
1374
"""Returns a bound method if one exists which is a D-Bus
641
1375
property with the specified name and interface.
642
1376
"""
643
for cls in self.__class__.__mro__:
644
for name, value in (inspect.getmembers
645
(cls, self._is_dbus_property)):
1377
for cls in self.__class__.__mro__:
1378
for name, value in inspect.getmembers(
1379
cls, self._is_dbus_thing("property")):
646
1380
if (value._dbus_name == property_name
647
1381
and value._dbus_interface == interface_name):
648
1382
return value.__get__(self)
649
1383
650
1384
# No such property
651
raise DBusPropertyNotFound(self.dbus_object_path + ":"
652
+ interface_name + "."
653
+ property_name)
654
655
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1385
raise DBusPropertyNotFound("{}:{}.{}".format(
1386
self.dbus_object_path, interface_name, property_name))
1387
1388
@classmethod
1389
def _get_all_interface_names(cls):
1390
"""Get a sequence of all interfaces supported by an object"""
1391
return (name for name in set(getattr(getattr(x, attr),
1392
"_dbus_interface", None)
1393
for x in (inspect.getmro(cls))
1394
for attr in dir(x))
1395
if name is not None)
1396
1397
@dbus.service.method(dbus.PROPERTIES_IFACE,
1398
in_signature="ss",
656
1399
out_signature="v")
657
1400
def Get(self, interface_name, property_name):
658
1401
"""Standard D-Bus property Get() method, see D-Bus standard.
664
1407
if not hasattr(value, "variant_level"):
665
1408
return value
666
1409
return type(value)(value, variant_level=value.variant_level+1)
667
1410
668
1411
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
669
1412
def Set(self, interface_name, property_name, value):
670
1413
"""Standard D-Bus property Set() method, see D-Bus standard.
676
1419
# The byte_arrays option is not supported yet on
677
1420
# signatures other than "ay".
678
1421
if prop._dbus_signature != "ay":
679
raise ValueError
680
value = dbus.ByteArray(''.join(unichr(byte)
681
for byte in value))
1422
raise ValueError("Byte arrays not supported for non-"
1423
"'ay' signature {!r}"
1424
.format(prop._dbus_signature))
1425
value = dbus.ByteArray(bytes(value))
682
1426
prop(value)
683
684
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1427
1428
@dbus.service.method(dbus.PROPERTIES_IFACE,
1429
in_signature="s",
685
1430
out_signature="a{sv}")
686
1431
def GetAll(self, interface_name):
687
1432
"""Standard D-Bus property GetAll() method, see D-Bus
688
1433
standard.
689
1434
690
1435
Note: Will not include properties with access="write".
691
1436
"""
692
all = {}
693
for name, prop in self._get_all_dbus_properties():
1437
properties = {}
1438
for name, prop in self._get_all_dbus_things("property"):
694
1439
if (interface_name
695
1440
and interface_name != prop._dbus_interface):
696
1441
# Interface non-empty but did not match
700
1445
continue
701
1446
value = prop()
702
1447
if not hasattr(value, "variant_level"):
703
all[name] = value
1448
properties[name] = value
704
1449
continue
705
all[name] = type(value)(value, variant_level=
706
value.variant_level+1)
707
return dbus.Dictionary(all, signature="sv")
708
1450
properties[name] = type(value)(
1451
value, variant_level=value.variant_level + 1)
1452
return dbus.Dictionary(properties, signature="sv")
1453
1454
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1455
def PropertiesChanged(self, interface_name, changed_properties,
1456
invalidated_properties):
1457
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1458
standard.
1459
"""
1460
pass
1461
709
1462
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
710
1463
out_signature="s",
711
1464
path_keyword='object_path',
712
1465
connection_keyword='connection')
713
1466
def Introspect(self, object_path, connection):
714
"""Standard D-Bus method, overloaded to insert property tags.
1467
"""Overloading of standard D-Bus method.
1468
1469
Inserts property tags and interface annotation tags.
715
1470
"""
716
xmlstring = dbus.service.Object.Introspect(self, object_path,
717
connection)
1471
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1472
object_path,
1473
connection)
718
1474
try:
719
1475
document = xml.dom.minidom.parseString(xmlstring)
1476
720
1477
def make_tag(document, name, prop):
721
1478
e = document.createElement("property")
722
1479
e.setAttribute("name", name)
723
1480
e.setAttribute("type", prop._dbus_signature)
724
1481
e.setAttribute("access", prop._dbus_access)
725
1482
return e
1483
726
1484
for if_tag in document.getElementsByTagName("interface"):
1485
# Add property tags
727
1486
for tag in (make_tag(document, name, prop)
728
1487
for name, prop
729
in self._get_all_dbus_properties()
1488
in self._get_all_dbus_things("property")
730
1489
if prop._dbus_interface
731
1490
== if_tag.getAttribute("name")):
732
1491
if_tag.appendChild(tag)
1492
# Add annotation tags for properties
1493
for tag in if_tag.getElementsByTagName("property"):
1494
annots = dict()
1495
for name, prop in self._get_all_dbus_things(
1496
"property"):
1497
if (name == tag.getAttribute("name")
1498
and prop._dbus_interface
1499
== if_tag.getAttribute("name")):
1500
annots.update(getattr(
1501
prop, "_dbus_annotations", {}))
1502
for name, value in annots.items():
1503
ann_tag = document.createElement(
1504
"annotation")
1505
ann_tag.setAttribute("name", name)
1506
ann_tag.setAttribute("value", value)
1507
tag.appendChild(ann_tag)
733
1508
# Add the names to the return values for the
734
1509
# "org.freedesktop.DBus.Properties" methods
735
1510
if (if_tag.getAttribute("name")
750
1525
except (AttributeError, xml.dom.DOMException,
751
1526
xml.parsers.expat.ExpatError) as error:
752
1527
logger.error("Failed to override Introspection method",
753
error)
754
return xmlstring
755
756
757
def datetime_to_dbus (dt, variant_level=0):
1528
exc_info=error)
1529
return xmlstring
1530
1531
1532
try:
1533
dbus.OBJECT_MANAGER_IFACE
1534
except AttributeError:
1535
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1536
1537
1538
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1539
"""A D-Bus object with an ObjectManager.
1540
1541
Classes inheriting from this exposes the standard
1542
GetManagedObjects call and the InterfacesAdded and
1543
InterfacesRemoved signals on the standard
1544
"org.freedesktop.DBus.ObjectManager" interface.
1545
1546
Note: No signals are sent automatically; they must be sent
1547
manually.
1548
"""
1549
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1550
out_signature="a{oa{sa{sv}}}")
1551
def GetManagedObjects(self):
1552
"""This function must be overridden"""
1553
raise NotImplementedError()
1554
1555
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1556
signature="oa{sa{sv}}")
1557
def InterfacesAdded(self, object_path, interfaces_and_properties):
1558
pass
1559
1560
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1561
def InterfacesRemoved(self, object_path, interfaces):
1562
pass
1563
1564
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1565
out_signature="s",
1566
path_keyword='object_path',
1567
connection_keyword='connection')
1568
def Introspect(self, object_path, connection):
1569
"""Overloading of standard D-Bus method.
1570
1571
Override return argument name of GetManagedObjects to be
1572
"objpath_interfaces_and_properties"
1573
"""
1574
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1575
object_path,
1576
connection)
1577
try:
1578
document = xml.dom.minidom.parseString(xmlstring)
1579
1580
for if_tag in document.getElementsByTagName("interface"):
1581
# Fix argument name for the GetManagedObjects method
1582
if (if_tag.getAttribute("name")
1583
== dbus.OBJECT_MANAGER_IFACE):
1584
for cn in if_tag.getElementsByTagName("method"):
1585
if (cn.getAttribute("name")
1586
== "GetManagedObjects"):
1587
for arg in cn.getElementsByTagName("arg"):
1588
if (arg.getAttribute("direction")
1589
== "out"):
1590
arg.setAttribute(
1591
"name",
1592
"objpath_interfaces"
1593
"_and_properties")
1594
xmlstring = document.toxml("utf-8")
1595
document.unlink()
1596
except (AttributeError, xml.dom.DOMException,
1597
xml.parsers.expat.ExpatError) as error:
1598
logger.error("Failed to override Introspection method",
1599
exc_info=error)
1600
return xmlstring
1601
1602
1603
def datetime_to_dbus(dt, variant_level=0):
758
1604
"""Convert a UTC datetime.datetime() to a D-Bus type."""
759
1605
if dt is None:
760
return dbus.String("", variant_level = variant_level)
761
return dbus.String(dt.isoformat(),
762
variant_level=variant_level)
763
764
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
765
.__metaclass__):
766
"""Applied to an empty subclass of a D-Bus object, this metaclass
767
will add additional D-Bus attributes matching a certain pattern.
1606
return dbus.String("", variant_level=variant_level)
1607
return dbus.String(dt.isoformat(), variant_level=variant_level)
1608
1609
1610
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1611
"""A class decorator; applied to a subclass of
1612
dbus.service.Object, it will add alternate D-Bus attributes with
1613
interface names according to the "alt_interface_names" mapping.
1614
Usage:
1615
1616
@alternate_dbus_interfaces({"org.example.Interface":
1617
"net.example.AlternateInterface"})
1618
class SampleDBusObject(dbus.service.Object):
1619
@dbus.service.method("org.example.Interface")
1620
def SampleDBusMethod():
1621
pass
1622
1623
The above "SampleDBusMethod" on "SampleDBusObject" will be
1624
reachable via two interfaces: "org.example.Interface" and
1625
"net.example.AlternateInterface", the latter of which will have
1626
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1627
"true", unless "deprecate" is passed with a False value.
1628
1629
This works for methods and signals, and also for D-Bus properties
1630
(from DBusObjectWithProperties) and interfaces (from the
1631
dbus_interface_annotations decorator).
768
1632
"""
769
def __new__(mcs, name, bases, attr):
770
# Go through all the base classes which could have D-Bus
771
# methods, signals, or properties in them
772
for base in (b for b in bases
773
if issubclass(b, dbus.service.Object)):
774
# Go though all attributes of the base class
775
for attrname, attribute in inspect.getmembers(base):
1633
1634
def wrapper(cls):
1635
for orig_interface_name, alt_interface_name in (
1636
alt_interface_names.items()):
1637
attr = {}
1638
interface_names = set()
1639
# Go though all attributes of the class
1640
for attrname, attribute in inspect.getmembers(cls):
776
1641
# Ignore non-D-Bus attributes, and D-Bus attributes
777
1642
# with the wrong interface name
778
1643
if (not hasattr(attribute, "_dbus_interface")
779
or not attribute._dbus_interface
780
.startswith("se.recompile.Mandos")):
1644
or not attribute._dbus_interface.startswith(
1645
orig_interface_name)):
781
1646
continue
782
1647
# Create an alternate D-Bus interface name based on
783
1648
# the current name
784
alt_interface = (attribute._dbus_interface
785
.replace("se.recompile.Mandos",
786
"se.bsnet.fukt.Mandos"))
1649
alt_interface = attribute._dbus_interface.replace(
1650
orig_interface_name, alt_interface_name)
1651
interface_names.add(alt_interface)
787
1652
# Is this a D-Bus signal?
788
1653
if getattr(attribute, "_dbus_is_signal", False):
789
# Extract the original non-method function by
790
# black magic
791
nonmethod_func = (dict(
1654
# Extract the original non-method undecorated
1655
# function by black magic
1656
if sys.version_info.major == 2:
1657
nonmethod_func = (dict(
792
1658
zip(attribute.func_code.co_freevars,
793
attribute.__closure__))["func"]
794
.cell_contents)
1659
attribute.__closure__))
1660
["func"].cell_contents)
1661
else:
1662
nonmethod_func = (dict(
1663
zip(attribute.__code__.co_freevars,
1664
attribute.__closure__))
1665
["func"].cell_contents)
795
1666
# Create a new, but exactly alike, function
796
1667
# object, and decorate it to be a new D-Bus signal
797
1668
# with the alternate D-Bus interface name
798
new_function = (dbus.service.signal
799
(alt_interface,
800
attribute._dbus_signature)
801
(types.FunctionType(
802
nonmethod_func.func_code,
803
nonmethod_func.func_globals,
804
nonmethod_func.func_name,
805
nonmethod_func.func_defaults,
806
nonmethod_func.func_closure)))
1669
new_function = copy_function(nonmethod_func)
1670
new_function = (dbus.service.signal(
1671
alt_interface,
1672
attribute._dbus_signature)(new_function))
1673
# Copy annotations, if any
1674
try:
1675
new_function._dbus_annotations = dict(
1676
attribute._dbus_annotations)
1677
except AttributeError:
1678
pass
1679
807
1680
# Define a creator of a function to call both the
808
# old and new functions, so both the old and new
809
# signals gets sent when the function is called
1681
# original and alternate functions, so both the
1682
# original and alternate signals gets sent when
1683
# the function is called
810
1684
def fixscope(func1, func2):
811
1685
"""This function is a scope container to pass
812
1686
func1 and func2 to the "call_both" function
813
1687
outside of its arguments"""
1688
1689
@functools.wraps(func2)
814
1690
def call_both(*args, **kwargs):
815
1691
"""This function will emit two D-Bus
816
1692
signals by calling func1 and func2"""
817
1693
func1(*args, **kwargs)
818
1694
func2(*args, **kwargs)
1695
# Make wrapper function look like a D-Bus
1696
# signal
1697
for name, attr in inspect.getmembers(func2):
1698
if name.startswith("_dbus_"):
1699
setattr(call_both, name, attr)
1700
819
1701
return call_both
820
1702
# Create the "call_both" function and add it to
821
1703
# the class
822
attr[attrname] = fixscope(attribute,
823
new_function)
1704
attr[attrname] = fixscope(attribute, new_function)
824
1705
# Is this a D-Bus method?
825
1706
elif getattr(attribute, "_dbus_is_method", False):
826
1707
# Create a new, but exactly alike, function
827
1708
# object. Decorate it to be a new D-Bus method
828
1709
# with the alternate D-Bus interface name. Add it
829
1710
# to the class.
830
attr[attrname] = (dbus.service.method
831
(alt_interface,
832
attribute._dbus_in_signature,
833
attribute._dbus_out_signature)
834
(types.FunctionType
835
(attribute.func_code,
836
attribute.func_globals,
837
attribute.func_name,
838
attribute.func_defaults,
839
attribute.func_closure)))
1711
attr[attrname] = (
1712
dbus.service.method(
1713
alt_interface,
1714
attribute._dbus_in_signature,
1715
attribute._dbus_out_signature)
1716
(copy_function(attribute)))
1717
# Copy annotations, if any
1718
try:
1719
attr[attrname]._dbus_annotations = dict(
1720
attribute._dbus_annotations)
1721
except AttributeError:
1722
pass
840
1723
# Is this a D-Bus property?
841
1724
elif getattr(attribute, "_dbus_is_property", False):
842
1725
# Create a new, but exactly alike, function
843
1726
# object, and decorate it to be a new D-Bus
844
1727
# property with the alternate D-Bus interface
845
1728
# name. Add it to the class.
846
attr[attrname] = (dbus_service_property
847
(alt_interface,
848
attribute._dbus_signature,
849
attribute._dbus_access,
850
attribute
851
._dbus_get_args_options
852
["byte_arrays"])
853
(types.FunctionType
854
(attribute.func_code,
855
attribute.func_globals,
856
attribute.func_name,
857
attribute.func_defaults,
858
attribute.func_closure)))
859
return type.__new__(mcs, name, bases, attr)
860
1729
attr[attrname] = (dbus_service_property(
1730
alt_interface, attribute._dbus_signature,
1731
attribute._dbus_access,
1732
attribute._dbus_get_args_options
1733
["byte_arrays"])
1734
(copy_function(attribute)))
1735
# Copy annotations, if any
1736
try:
1737
attr[attrname]._dbus_annotations = dict(
1738
attribute._dbus_annotations)
1739
except AttributeError:
1740
pass
1741
# Is this a D-Bus interface?
1742
elif getattr(attribute, "_dbus_is_interface", False):
1743
# Create a new, but exactly alike, function
1744
# object. Decorate it to be a new D-Bus interface
1745
# with the alternate D-Bus interface name. Add it
1746
# to the class.
1747
attr[attrname] = (
1748
dbus_interface_annotations(alt_interface)
1749
(copy_function(attribute)))
1750
if deprecate:
1751
# Deprecate all alternate interfaces
1752
iname = "_AlternateDBusNames_interface_annotation{}"
1753
for interface_name in interface_names:
1754
1755
@dbus_interface_annotations(interface_name)
1756
def func(self):
1757
return {"org.freedesktop.DBus.Deprecated":
1758
"true"}
1759
# Find an unused name
1760
for aname in (iname.format(i)
1761
for i in itertools.count()):
1762
if aname not in attr:
1763
attr[aname] = func
1764
break
1765
if interface_names:
1766
# Replace the class with a new subclass of it with
1767
# methods, signals, etc. as created above.
1768
if sys.version_info.major == 2:
1769
cls = type(b"{}Alternate".format(cls.__name__),
1770
(cls, ), attr)
1771
else:
1772
cls = type("{}Alternate".format(cls.__name__),
1773
(cls, ), attr)
1774
return cls
1775
1776
return wrapper
1777
1778
1779
@alternate_dbus_interfaces({"se.recompile.Mandos":
1780
"se.bsnet.fukt.Mandos"})
861
1781
class ClientDBus(Client, DBusObjectWithProperties):
862
1782
"""A Client class using D-Bus
863
1783
864
1784
Attributes:
865
1785
dbus_object_path: dbus.ObjectPath
866
1786
bus: dbus.SystemBus()
867
1787
"""
868
1788
869
1789
runtime_expansions = (Client.runtime_expansions
870
+ ("dbus_object_path",))
871
1790
+ ("dbus_object_path", ))
1791
1792
_interface = "se.recompile.Mandos.Client"
1793
872
1794
# dbus.service.Object doesn't use super(), so we can't either.
873
874
def __init__(self, bus = None, *args, **kwargs):
875
self._approvals_pending = 0
1795
1796
def __init__(self, bus=None, *args, **kwargs):
876
1797
self.bus = bus
877
1798
Client.__init__(self, *args, **kwargs)
878
1799
# Only now, when this client is initialized, can it show up on
879
1800
# the D-Bus
880
client_object_name = unicode(self.name).translate(
1801
client_object_name = str(self.name).translate(
881
1802
{ord("."): ord("_"),
882
1803
ord("-"): ord("_")})
883
self.dbus_object_path = (dbus.ObjectPath
884
("/clients/" + client_object_name))
1804
self.dbus_object_path = dbus.ObjectPath(
1805
"/clients/" + client_object_name)
885
1806
DBusObjectWithProperties.__init__(self, self.bus,
886
1807
self.dbus_object_path)
887
888
def notifychangeproperty(transform_func,
889
dbus_name, type_func=lambda x: x,
890
variant_level=1):
1808
1809
def notifychangeproperty(transform_func, dbus_name,
1810
type_func=lambda x: x,
1811
variant_level=1,
1812
invalidate_only=False,
1813
_interface=_interface):
891
1814
""" Modify a variable so that it's a property which announces
892
1815
its changes to DBus.
893
1816
898
1821
to the D-Bus. Default: no transform
899
1822
variant_level: D-Bus variant level. Default: 1
900
1823
"""
901
attrname = "_{0}".format(dbus_name)
1824
attrname = "_{}".format(dbus_name)
1825
902
1826
def setter(self, value):
903
1827
if hasattr(self, "dbus_object_path"):
904
1828
if (not hasattr(self, attrname) or
905
1829
type_func(getattr(self, attrname, None))
906
1830
!= type_func(value)):
907
dbus_value = transform_func(type_func(value),
908
variant_level
909
=variant_level)
910
self.PropertyChanged(dbus.String(dbus_name),
911
dbus_value)
1831
if invalidate_only:
1832
self.PropertiesChanged(
1833
_interface, dbus.Dictionary(),
1834
dbus.Array((dbus_name, )))
1835
else:
1836
dbus_value = transform_func(
1837
type_func(value),
1838
variant_level=variant_level)
1839
self.PropertyChanged(dbus.String(dbus_name),
1840
dbus_value)
1841
self.PropertiesChanged(
1842
_interface,
1843
dbus.Dictionary({dbus.String(dbus_name):
1844
dbus_value}),
1845
dbus.Array())
912
1846
setattr(self, attrname, value)
913
1847
914
1848
return property(lambda self: getattr(self, attrname), setter)
915
916
1849
917
1850
expires = notifychangeproperty(datetime_to_dbus, "Expires")
918
1851
approvals_pending = notifychangeproperty(dbus.Boolean,
919
1852
"ApprovalPending",
920
type_func = bool)
1853
type_func=bool)
921
1854
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
922
1855
last_enabled = notifychangeproperty(datetime_to_dbus,
923
1856
"LastEnabled")
924
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
925
type_func = lambda checker:
926
checker is not None)
1857
checker = notifychangeproperty(
1858
dbus.Boolean, "CheckerRunning",
1859
type_func=lambda checker: checker is not None)
927
1860
last_checked_ok = notifychangeproperty(datetime_to_dbus,
928
1861
"LastCheckedOK")
1862
last_checker_status = notifychangeproperty(dbus.Int16,
1863
"LastCheckerStatus")
929
1864
last_approval_request = notifychangeproperty(
930
1865
datetime_to_dbus, "LastApprovalRequest")
931
1866
approved_by_default = notifychangeproperty(dbus.Boolean,
932
1867
"ApprovedByDefault")
933
approval_delay = notifychangeproperty(dbus.UInt16,
934
"ApprovalDelay",
935
type_func =
936
_timedelta_to_milliseconds)
1868
approval_delay = notifychangeproperty(
1869
dbus.UInt64, "ApprovalDelay",
1870
type_func=lambda td: td.total_seconds() * 1000)
937
1871
approval_duration = notifychangeproperty(
938
dbus.UInt16, "ApprovalDuration",
939
type_func = _timedelta_to_milliseconds)
1872
dbus.UInt64, "ApprovalDuration",
1873
type_func=lambda td: td.total_seconds() * 1000)
940
1874
host = notifychangeproperty(dbus.String, "Host")
941
timeout = notifychangeproperty(dbus.UInt16, "Timeout",
942
type_func =
943
_timedelta_to_milliseconds)
1875
timeout = notifychangeproperty(
1876
dbus.UInt64, "Timeout",
1877
type_func=lambda td: td.total_seconds() * 1000)
944
1878
extended_timeout = notifychangeproperty(
945
dbus.UInt16, "ExtendedTimeout",
946
type_func = _timedelta_to_milliseconds)
947
interval = notifychangeproperty(dbus.UInt16,
948
"Interval",
949
type_func =
950
_timedelta_to_milliseconds)
1879
dbus.UInt64, "ExtendedTimeout",
1880
type_func=lambda td: td.total_seconds() * 1000)
1881
interval = notifychangeproperty(
1882
dbus.UInt64, "Interval",
1883
type_func=lambda td: td.total_seconds() * 1000)
951
1884
checker_command = notifychangeproperty(dbus.String, "Checker")
952
1885
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1886
invalidate_only=True)
1887
953
1888
del notifychangeproperty
954
1889
955
1890
def __del__(self, *args, **kwargs):
956
1891
try:
957
1892
self.remove_from_connection()
960
1895
if hasattr(DBusObjectWithProperties, "__del__"):
961
1896
DBusObjectWithProperties.__del__(self, *args, **kwargs)
962
1897
Client.__del__(self, *args, **kwargs)
963
964
def checker_callback(self, pid, condition, command,
965
*args, **kwargs):
966
self.checker_callback_tag = None
967
self.checker = None
968
if os.WIFEXITED(condition):
969
exitstatus = os.WEXITSTATUS(condition)
1898
1899
def checker_callback(self, source, condition,
1900
connection, command, *args, **kwargs):
1901
ret = Client.checker_callback(self, source, condition,
1902
connection, command, *args,
1903
**kwargs)
1904
exitstatus = self.last_checker_status
1905
if exitstatus >= 0:
970
1906
# Emit D-Bus signal
971
1907
self.CheckerCompleted(dbus.Int16(exitstatus),
972
dbus.Int64(condition),
1908
# This is specific to GNU libC
1909
dbus.Int64(exitstatus << 8),
973
1910
dbus.String(command))
974
1911
else:
975
1912
# Emit D-Bus signal
976
1913
self.CheckerCompleted(dbus.Int16(-1),
977
dbus.Int64(condition),
1914
dbus.Int64(
1915
# This is specific to GNU libC
1916
(exitstatus << 8)
1917
| self.last_checker_signal),
978
1918
dbus.String(command))
979
980
return Client.checker_callback(self, pid, condition, command,
981
*args, **kwargs)
982
1919
return ret
1920
983
1921
def start_checker(self, *args, **kwargs):
984
old_checker = self.checker
985
if self.checker is not None:
986
old_checker_pid = self.checker.pid
987
else:
988
old_checker_pid = None
1922
old_checker_pid = getattr(self.checker, "pid", None)
989
1923
r = Client.start_checker(self, *args, **kwargs)
990
1924
# Only if new checker process was started
991
1925
if (self.checker is not None
993
1927
# Emit D-Bus signal
994
1928
self.CheckerStarted(self.current_checker_command)
995
1929
return r
996
1930
997
1931
def _reset_approved(self):
998
self._approved = None
1932
self.approved = None
999
1933
return False
1000
1934
1001
1935
def approve(self, value=True):
1936
self.approved = value
1937
GLib.timeout_add(int(self.approval_duration.total_seconds()
1938
* 1000), self._reset_approved)
1002
1939
self.send_changedstate()
1003
self._approved = value
1004
gobject.timeout_add(_timedelta_to_milliseconds
1005
(self.approval_duration),
1006
self._reset_approved)
1007
1008
1009
## D-Bus methods, signals & properties
1010
_interface = "se.recompile.Mandos.Client"
1011
1012
## Signals
1013
1940
1941
# D-Bus methods, signals & properties
1942
1943
# Interfaces
1944
1945
# Signals
1946
1014
1947
# CheckerCompleted - signal
1015
1948
@dbus.service.signal(_interface, signature="nxs")
1016
1949
def CheckerCompleted(self, exitcode, waitstatus, command):
1017
1950
"D-Bus signal"
1018
1951
pass
1019
1952
1020
1953
# CheckerStarted - signal
1021
1954
@dbus.service.signal(_interface, signature="s")
1022
1955
def CheckerStarted(self, command):
1023
1956
"D-Bus signal"
1024
1957
pass
1025
1958
1026
1959
# PropertyChanged - signal
1960
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1027
1961
@dbus.service.signal(_interface, signature="sv")
1028
1962
def PropertyChanged(self, property, value):
1029
1963
"D-Bus signal"
1030
1964
pass
1031
1965
1032
1966
# GotSecret - signal
1033
1967
@dbus.service.signal(_interface)
1034
1968
def GotSecret(self):
1037
1971
server to mandos-client
1038
1972
"""
1039
1973
pass
1040
1974
1041
1975
# Rejected - signal
1042
1976
@dbus.service.signal(_interface, signature="s")
1043
1977
def Rejected(self, reason):
1044
1978
"D-Bus signal"
1045
1979
pass
1046
1980
1047
1981
# NeedApproval - signal
1048
1982
@dbus.service.signal(_interface, signature="tb")
1049
1983
def NeedApproval(self, timeout, default):
1050
1984
"D-Bus signal"
1051
1985
return self.need_approval()
1052
1053
## Methods
1054
1986
1987
# Methods
1988
1055
1989
# Approve - method
1056
1990
@dbus.service.method(_interface, in_signature="b")
1057
1991
def Approve(self, value):
1058
1992
self.approve(value)
1059
1993
1060
1994
# CheckedOK - method
1061
1995
@dbus.service.method(_interface)
1062
1996
def CheckedOK(self):
1063
1997
self.checked_ok()
1064
1998
1065
1999
# Enable - method
2000
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1066
2001
@dbus.service.method(_interface)
1067
2002
def Enable(self):
1068
2003
"D-Bus method"
1069
2004
self.enable()
1070
2005
1071
2006
# StartChecker - method
2007
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1072
2008
@dbus.service.method(_interface)
1073
2009
def StartChecker(self):
1074
2010
"D-Bus method"
1075
2011
self.start_checker()
1076
2012
1077
2013
# Disable - method
2014
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1078
2015
@dbus.service.method(_interface)
1079
2016
def Disable(self):
1080
2017
"D-Bus method"
1081
2018
self.disable()
1082
2019
1083
2020
# StopChecker - method
2021
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1084
2022
@dbus.service.method(_interface)
1085
2023
def StopChecker(self):
1086
2024
self.stop_checker()
1087
1088
## Properties
1089
2025
2026
# Properties
2027
1090
2028
# ApprovalPending - property
1091
2029
@dbus_service_property(_interface, signature="b", access="read")
1092
2030
def ApprovalPending_dbus_property(self):
1093
2031
return dbus.Boolean(bool(self.approvals_pending))
1094
2032
1095
2033
# ApprovedByDefault - property
1096
@dbus_service_property(_interface, signature="b",
2034
@dbus_service_property(_interface,
2035
signature="b",
1097
2036
access="readwrite")
1098
2037
def ApprovedByDefault_dbus_property(self, value=None):
1099
2038
if value is None: # get
1100
2039
return dbus.Boolean(self.approved_by_default)
1101
2040
self.approved_by_default = bool(value)
1102
2041
1103
2042
# ApprovalDelay - property
1104
@dbus_service_property(_interface, signature="t",
2043
@dbus_service_property(_interface,
2044
signature="t",
1105
2045
access="readwrite")
1106
2046
def ApprovalDelay_dbus_property(self, value=None):
1107
2047
if value is None: # get
1108
return dbus.UInt64(self.approval_delay_milliseconds())
2048
return dbus.UInt64(self.approval_delay.total_seconds()
2049
* 1000)
1109
2050
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1110
2051
1111
2052
# ApprovalDuration - property
1112
@dbus_service_property(_interface, signature="t",
2053
@dbus_service_property(_interface,
2054
signature="t",
1113
2055
access="readwrite")
1114
2056
def ApprovalDuration_dbus_property(self, value=None):
1115
2057
if value is None: # get
1116
return dbus.UInt64(_timedelta_to_milliseconds(
1117
self.approval_duration))
2058
return dbus.UInt64(self.approval_duration.total_seconds()
2059
* 1000)
1118
2060
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1119
2061
1120
2062
# Name - property
2063
@dbus_annotations(
2064
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1121
2065
@dbus_service_property(_interface, signature="s", access="read")
1122
2066
def Name_dbus_property(self):
1123
2067
return dbus.String(self.name)
1124
2068
2069
# KeyID - property
2070
@dbus_annotations(
2071
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2072
@dbus_service_property(_interface, signature="s", access="read")
2073
def KeyID_dbus_property(self):
2074
return dbus.String(self.key_id)
2075
1125
2076
# Fingerprint - property
2077
@dbus_annotations(
2078
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1126
2079
@dbus_service_property(_interface, signature="s", access="read")
1127
2080
def Fingerprint_dbus_property(self):
1128
2081
return dbus.String(self.fingerprint)
1129
2082
1130
2083
# Host - property
1131
@dbus_service_property(_interface, signature="s",
2084
@dbus_service_property(_interface,
2085
signature="s",
1132
2086
access="readwrite")
1133
2087
def Host_dbus_property(self, value=None):
1134
2088
if value is None: # get
1135
2089
return dbus.String(self.host)
1136
self.host = value
1137
2090
self.host = str(value)
2091
1138
2092
# Created - property
2093
@dbus_annotations(
2094
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1139
2095
@dbus_service_property(_interface, signature="s", access="read")
1140
2096
def Created_dbus_property(self):
1141
return dbus.String(datetime_to_dbus(self.created))
1142
2097
return datetime_to_dbus(self.created)
2098
1143
2099
# LastEnabled - property
1144
2100
@dbus_service_property(_interface, signature="s", access="read")
1145
2101
def LastEnabled_dbus_property(self):
1146
2102
return datetime_to_dbus(self.last_enabled)
1147
2103
1148
2104
# Enabled - property
1149
@dbus_service_property(_interface, signature="b",
2105
@dbus_service_property(_interface,
2106
signature="b",
1150
2107
access="readwrite")
1151
2108
def Enabled_dbus_property(self, value=None):
1152
2109
if value is None: # get
1155
2112
self.enable()
1156
2113
else:
1157
2114
self.disable()
1158
2115
1159
2116
# LastCheckedOK - property
1160
@dbus_service_property(_interface, signature="s",
2117
@dbus_service_property(_interface,
2118
signature="s",
1161
2119
access="readwrite")
1162
2120
def LastCheckedOK_dbus_property(self, value=None):
1163
2121
if value is not None:
1164
2122
self.checked_ok()
1165
2123
return
1166
2124
return datetime_to_dbus(self.last_checked_ok)
1167
2125
2126
# LastCheckerStatus - property
2127
@dbus_service_property(_interface, signature="n", access="read")
2128
def LastCheckerStatus_dbus_property(self):
2129
return dbus.Int16(self.last_checker_status)
2130
1168
2131
# Expires - property
1169
2132
@dbus_service_property(_interface, signature="s", access="read")
1170
2133
def Expires_dbus_property(self):
1171
2134
return datetime_to_dbus(self.expires)
1172
2135
1173
2136
# LastApprovalRequest - property
1174
2137
@dbus_service_property(_interface, signature="s", access="read")
1175
2138
def LastApprovalRequest_dbus_property(self):
1176
2139
return datetime_to_dbus(self.last_approval_request)
1177
2140
1178
2141
# Timeout - property
1179
@dbus_service_property(_interface, signature="t",
2142
@dbus_service_property(_interface,
2143
signature="t",
1180
2144
access="readwrite")
1181
2145
def Timeout_dbus_property(self, value=None):
1182
2146
if value is None: # get
1183
return dbus.UInt64(self.timeout_milliseconds())
2147
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2148
old_timeout = self.timeout
1184
2149
self.timeout = datetime.timedelta(0, 0, 0, value)
1185
if getattr(self, "disable_initiator_tag", None) is None:
1186
return
1187
# Reschedule timeout
1188
gobject.source_remove(self.disable_initiator_tag)
1189
self.disable_initiator_tag = None
1190
self.expires = None
1191
time_to_die = _timedelta_to_milliseconds((self
1192
.last_checked_ok
1193
+ self.timeout)
1194
- datetime.datetime
1195
.utcnow())
1196
if time_to_die <= 0:
1197
# The timeout has passed
1198
self.disable()
1199
else:
1200
self.expires = (datetime.datetime.utcnow()
1201
+ datetime.timedelta(milliseconds =
1202
time_to_die))
1203
self.disable_initiator_tag = (gobject.timeout_add
1204
(time_to_die, self.disable))
1205
2150
# Reschedule disabling
2151
if self.enabled:
2152
now = datetime.datetime.utcnow()
2153
self.expires += self.timeout - old_timeout
2154
if self.expires <= now:
2155
# The timeout has passed
2156
self.disable()
2157
else:
2158
if (getattr(self, "disable_initiator_tag", None)
2159
is None):
2160
return
2161
GLib.source_remove(self.disable_initiator_tag)
2162
self.disable_initiator_tag = GLib.timeout_add(
2163
int((self.expires - now).total_seconds() * 1000),
2164
self.disable)
2165
1206
2166
# ExtendedTimeout - property
1207
@dbus_service_property(_interface, signature="t",
2167
@dbus_service_property(_interface,
2168
signature="t",
1208
2169
access="readwrite")
1209
2170
def ExtendedTimeout_dbus_property(self, value=None):
1210
2171
if value is None: # get
1211
return dbus.UInt64(self.extended_timeout_milliseconds())
2172
return dbus.UInt64(self.extended_timeout.total_seconds()
2173
* 1000)
1212
2174
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1213
2175
1214
2176
# Interval - property
1215
@dbus_service_property(_interface, signature="t",
2177
@dbus_service_property(_interface,
2178
signature="t",
1216
2179
access="readwrite")
1217
2180
def Interval_dbus_property(self, value=None):
1218
2181
if value is None: # get
1219
return dbus.UInt64(self.interval_milliseconds())
2182
return dbus.UInt64(self.interval.total_seconds() * 1000)
1220
2183
self.interval = datetime.timedelta(0, 0, 0, value)
1221
2184
if getattr(self, "checker_initiator_tag", None) is None:
1222
2185
return
1223
# Reschedule checker run
1224
gobject.source_remove(self.checker_initiator_tag)
1225
self.checker_initiator_tag = (gobject.timeout_add
1226
(value, self.start_checker))
1227
self.start_checker() # Start one now, too
1228
2186
if self.enabled:
2187
# Reschedule checker run
2188
GLib.source_remove(self.checker_initiator_tag)
2189
self.checker_initiator_tag = GLib.timeout_add(
2190
value, self.start_checker)
2191
self.start_checker() # Start one now, too
2192
1229
2193
# Checker - property
1230
@dbus_service_property(_interface, signature="s",
2194
@dbus_service_property(_interface,
2195
signature="s",
1231
2196
access="readwrite")
1232
2197
def Checker_dbus_property(self, value=None):
1233
2198
if value is None: # get
1234
2199
return dbus.String(self.checker_command)
1235
self.checker_command = value
1236
2200
self.checker_command = str(value)
2201
1237
2202
# CheckerRunning - property
1238
@dbus_service_property(_interface, signature="b",
2203
@dbus_service_property(_interface,
2204
signature="b",
1239
2205
access="readwrite")
1240
2206
def CheckerRunning_dbus_property(self, value=None):
1241
2207
if value is None: # get
1244
2210
self.start_checker()
1245
2211
else:
1246
2212
self.stop_checker()
1247
2213
1248
2214
# ObjectPath - property
2215
@dbus_annotations(
2216
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2217
"org.freedesktop.DBus.Deprecated": "true"})
1249
2218
@dbus_service_property(_interface, signature="o", access="read")
1250
2219
def ObjectPath_dbus_property(self):
1251
return self.dbus_object_path # is already a dbus.ObjectPath
1252
2220
return self.dbus_object_path # is already a dbus.ObjectPath
2221
1253
2222
# Secret = property
1254
@dbus_service_property(_interface, signature="ay",
1255
access="write", byte_arrays=True)
2223
@dbus_annotations(
2224
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2225
"invalidates"})
2226
@dbus_service_property(_interface,
2227
signature="ay",
2228
access="write",
2229
byte_arrays=True)
1256
2230
def Secret_dbus_property(self, value):
1257
self.secret = str(value)
1258
2231
self.secret = bytes(value)
2232
1259
2233
del _interface
1260
2234
1261
2235
1262
class ProxyClient(object):
1263
def __init__(self, child_pipe, fpr, address):
2236
class ProxyClient:
2237
def __init__(self, child_pipe, key_id, fpr, address):
1264
2238
self._pipe = child_pipe
1265
self._pipe.send(('init', fpr, address))
2239
self._pipe.send(('init', key_id, fpr, address))
1266
2240
if not self._pipe.recv():
1267
raise KeyError()
1268
2241
raise KeyError(key_id or fpr)
2242
1269
2243
def __getattribute__(self, name):
1270
if(name == '_pipe'):
2244
if name == '_pipe':
1271
2245
return super(ProxyClient, self).__getattribute__(name)
1272
2246
self._pipe.send(('getattr', name))
1273
2247
data = self._pipe.recv()
1274
2248
if data[0] == 'data':
1275
2249
return data[1]
1276
2250
if data[0] == 'function':
2251
1277
2252
def func(*args, **kwargs):
1278
2253
self._pipe.send(('funcall', name, args, kwargs))
1279
2254
return self._pipe.recv()[1]
2255
1280
2256
return func
1281
2257
1282
2258
def __setattr__(self, name, value):
1283
if(name == '_pipe'):
2259
if name == '_pipe':
1284
2260
return super(ProxyClient, self).__setattr__(name, value)
1285
2261
self._pipe.send(('setattr', name, value))
1286
2262
1287
class ClientDBusTransitional(ClientDBus):
1288
__metaclass__ = AlternateDBusNamesMetaclass
1289
2263
1290
2264
class ClientHandler(socketserver.BaseRequestHandler, object):
1291
2265
"""A class to handle client connections.
1292
2266
1293
2267
Instantiated once for each connection to handle it.
1294
2268
Note: This will run in its own forked process."""
1295
2269
1296
2270
def handle(self):
1297
2271
with contextlib.closing(self.server.child_pipe) as child_pipe:
1298
2272
logger.info("TCP connection from: %s",
1299
unicode(self.client_address))
2273
str(self.client_address))
1300
2274
logger.debug("Pipe FD: %d",
1301
2275
self.server.child_pipe.fileno())
1302
1303
session = (gnutls.connection
1304
.ClientSession(self.request,
1305
gnutls.connection
1306
.X509Credentials()))
1307
1308
# Note: gnutls.connection.X509Credentials is really a
1309
# generic GnuTLS certificate credentials object so long as
1310
# no X.509 keys are added to it. Therefore, we can use it
1311
# here despite using OpenPGP certificates.
1312
1313
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1314
# "+AES-256-CBC", "+SHA1",
1315
# "+COMP-NULL", "+CTYPE-OPENPGP",
1316
# "+DHE-DSS"))
2276
2277
session = gnutls.ClientSession(self.request)
2278
2279
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2280
# "+AES-256-CBC", "+SHA1",
2281
# "+COMP-NULL", "+CTYPE-OPENPGP",
2282
# "+DHE-DSS"))
1317
2283
# Use a fallback default, since this MUST be set.
1318
2284
priority = self.server.gnutls_priority
1319
2285
if priority is None:
1320
2286
priority = "NORMAL"
1321
(gnutls.library.functions
1322
.gnutls_priority_set_direct(session._c_object,
1323
priority, None))
1324
2287
gnutls.priority_set_direct(session._c_object,
2288
priority.encode("utf-8"),
2289
None)
2290
1325
2291
# Start communication using the Mandos protocol
1326
2292
# Get protocol number
1327
2293
line = self.request.makefile().readline()
1328
2294
logger.debug("Protocol version: %r", line)
1329
2295
try:
1330
2296
if int(line.strip().split()[0]) > 1:
1331
raise RuntimeError
2297
raise RuntimeError(line)
1332
2298
except (ValueError, IndexError, RuntimeError) as error:
1333
2299
logger.error("Unknown protocol version: %s", error)
1334
2300
return
1335
2301
1336
2302
# Start GnuTLS connection
1337
2303
try:
1338
2304
session.handshake()
1339
except gnutls.errors.GNUTLSError as error:
2305
except gnutls.Error as error:
1340
2306
logger.warning("Handshake failed: %s", error)
1341
2307
# Do not run session.bye() here: the session is not
1342
2308
# established. Just abandon the request.
1343
2309
return
1344
2310
logger.debug("Handshake succeeded")
1345
2311
1346
2312
approval_required = False
1347
2313
try:
1348
try:
1349
fpr = self.fingerprint(self.peer_certificate
1350
(session))
1351
except (TypeError,
1352
gnutls.errors.GNUTLSError) as error:
1353
logger.warning("Bad certificate: %s", error)
1354
return
1355
logger.debug("Fingerprint: %s", fpr)
1356
1357
try:
1358
client = ProxyClient(child_pipe, fpr,
2314
if gnutls.has_rawpk:
2315
fpr = b""
2316
try:
2317
key_id = self.key_id(
2318
self.peer_certificate(session))
2319
except (TypeError, gnutls.Error) as error:
2320
logger.warning("Bad certificate: %s", error)
2321
return
2322
logger.debug("Key ID: %s", key_id)
2323
2324
else:
2325
key_id = b""
2326
try:
2327
fpr = self.fingerprint(
2328
self.peer_certificate(session))
2329
except (TypeError, gnutls.Error) as error:
2330
logger.warning("Bad certificate: %s", error)
2331
return
2332
logger.debug("Fingerprint: %s", fpr)
2333
2334
try:
2335
client = ProxyClient(child_pipe, key_id, fpr,
1359
2336
self.client_address)
1360
2337
except KeyError:
1361
2338
return
1362
2339
1363
2340
if client.approval_delay:
1364
2341
delay = client.approval_delay
1365
2342
client.approvals_pending += 1
1366
2343
approval_required = True
1367
2344
1368
2345
while True:
1369
2346
if not client.enabled:
1370
2347
logger.info("Client %s is disabled",
1371
client.name)
2348
client.name)
1372
2349
if self.server.use_dbus:
1373
2350
# Emit D-Bus signal
1374
2351
client.Rejected("Disabled")
1375
2352
return
1376
1377
if client._approved or not client.approval_delay:
1378
#We are approved or approval is disabled
2353
2354
if client.approved or not client.approval_delay:
2355
# We are approved or approval is disabled
1379
2356
break
1380
elif client._approved is None:
2357
elif client.approved is None:
1381
2358
logger.info("Client %s needs approval",
1382
2359
client.name)
1383
2360
if self.server.use_dbus:
1384
2361
# Emit D-Bus signal
1385
2362
client.NeedApproval(
1386
client.approval_delay_milliseconds(),
1387
client.approved_by_default)
2363
client.approval_delay.total_seconds()
2364
* 1000, client.approved_by_default)
1388
2365
else:
1389
2366
logger.warning("Client %s was not approved",
1390
2367
client.name)
1392
2369
# Emit D-Bus signal
1393
2370
client.Rejected("Denied")
1394
2371
return
1395
1396
#wait until timeout or approved
2372
2373
# wait until timeout or approved
1397
2374
time = datetime.datetime.now()
1398
2375
client.changedstate.acquire()
1399
(client.changedstate.wait
1400
(float(client._timedelta_to_milliseconds(delay)
1401
/ 1000)))
2376
client.changedstate.wait(delay.total_seconds())
1402
2377
client.changedstate.release()
1403
2378
time2 = datetime.datetime.now()
1404
2379
if (time2 - time) >= delay:
1414
2389
break
1415
2390
else:
1416
2391
delay -= time2 - time
1417
1418
sent_size = 0
1419
while sent_size < len(client.secret):
1420
try:
1421
sent = session.send(client.secret[sent_size:])
1422
except gnutls.errors.GNUTLSError as error:
1423
logger.warning("gnutls send failed")
1424
return
1425
logger.debug("Sent: %d, remaining: %d",
1426
sent, len(client.secret)
1427
- (sent_size + sent))
1428
sent_size += sent
1429
2392
2393
try:
2394
session.send(client.secret)
2395
except gnutls.Error as error:
2396
logger.warning("gnutls send failed",
2397
exc_info=error)
2398
return
2399
1430
2400
logger.info("Sending secret to %s", client.name)
1431
2401
# bump the timeout using extended_timeout
1432
client.checked_ok(client.extended_timeout)
2402
client.bump_timeout(client.extended_timeout)
1433
2403
if self.server.use_dbus:
1434
2404
# Emit D-Bus signal
1435
2405
client.GotSecret()
1436
2406
1437
2407
finally:
1438
2408
if approval_required:
1439
2409
client.approvals_pending -= 1
1440
2410
try:
1441
2411
session.bye()
1442
except gnutls.errors.GNUTLSError as error:
1443
logger.warning("GnuTLS bye failed")
1444
2412
except gnutls.Error as error:
2413
logger.warning("GnuTLS bye failed",
2414
exc_info=error)
2415
1445
2416
@staticmethod
1446
2417
def peer_certificate(session):
1447
"Return the peer's OpenPGP certificate as a bytestring"
1448
# If not an OpenPGP certificate...
1449
if (gnutls.library.functions
1450
.gnutls_certificate_type_get(session._c_object)
1451
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1452
# ...do the normal thing
1453
return session.peer_certificate
2418
"Return the peer's certificate as a bytestring"
2419
try:
2420
cert_type = gnutls.certificate_type_get2(session._c_object,
2421
gnutls.CTYPE_PEERS)
2422
except AttributeError:
2423
cert_type = gnutls.certificate_type_get(session._c_object)
2424
if gnutls.has_rawpk:
2425
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2426
else:
2427
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2428
# If not a valid certificate type...
2429
if cert_type not in valid_cert_types:
2430
logger.info("Cert type %r not in %r", cert_type,
2431
valid_cert_types)
2432
# ...return invalid data
2433
return b""
1454
2434
list_size = ctypes.c_uint(1)
1455
cert_list = (gnutls.library.functions
1456
.gnutls_certificate_get_peers
2435
cert_list = (gnutls.certificate_get_peers
1457
2436
(session._c_object, ctypes.byref(list_size)))
1458
2437
if not bool(cert_list) and list_size.value != 0:
1459
raise gnutls.errors.GNUTLSError("error getting peer"
1460
" certificate")
2438
raise gnutls.Error("error getting peer certificate")
1461
2439
if list_size.value == 0:
1462
2440
return None
1463
2441
cert = cert_list[0]
1464
2442
return ctypes.string_at(cert.data, cert.size)
1465
2443
2444
@staticmethod
2445
def key_id(certificate):
2446
"Convert a certificate bytestring to a hexdigit key ID"
2447
# New GnuTLS "datum" with the public key
2448
datum = gnutls.datum_t(
2449
ctypes.cast(ctypes.c_char_p(certificate),
2450
ctypes.POINTER(ctypes.c_ubyte)),
2451
ctypes.c_uint(len(certificate)))
2452
# XXX all these need to be created in the gnutls "module"
2453
# New empty GnuTLS certificate
2454
pubkey = gnutls.pubkey_t()
2455
gnutls.pubkey_init(ctypes.byref(pubkey))
2456
# Import the raw public key into the certificate
2457
gnutls.pubkey_import(pubkey,
2458
ctypes.byref(datum),
2459
gnutls.X509_FMT_DER)
2460
# New buffer for the key ID
2461
buf = ctypes.create_string_buffer(32)
2462
buf_len = ctypes.c_size_t(len(buf))
2463
# Get the key ID from the raw public key into the buffer
2464
gnutls.pubkey_get_key_id(pubkey,
2465
gnutls.KEYID_USE_SHA256,
2466
ctypes.cast(ctypes.byref(buf),
2467
ctypes.POINTER(ctypes.c_ubyte)),
2468
ctypes.byref(buf_len))
2469
# Deinit the certificate
2470
gnutls.pubkey_deinit(pubkey)
2471
2472
# Convert the buffer to a Python bytestring
2473
key_id = ctypes.string_at(buf, buf_len.value)
2474
# Convert the bytestring to hexadecimal notation
2475
hex_key_id = binascii.hexlify(key_id).upper()
2476
return hex_key_id
2477
1466
2478
@staticmethod
1467
2479
def fingerprint(openpgp):
1468
2480
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1469
2481
# New GnuTLS "datum" with the OpenPGP public key
1470
datum = (gnutls.library.types
1471
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1472
ctypes.POINTER
1473
(ctypes.c_ubyte)),
1474
ctypes.c_uint(len(openpgp))))
2482
datum = gnutls.datum_t(
2483
ctypes.cast(ctypes.c_char_p(openpgp),
2484
ctypes.POINTER(ctypes.c_ubyte)),
2485
ctypes.c_uint(len(openpgp)))
1475
2486
# New empty GnuTLS certificate
1476
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1477
(gnutls.library.functions
1478
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2487
crt = gnutls.openpgp_crt_t()
2488
gnutls.openpgp_crt_init(ctypes.byref(crt))
1479
2489
# Import the OpenPGP public key into the certificate
1480
(gnutls.library.functions
1481
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1482
gnutls.library.constants
1483
.GNUTLS_OPENPGP_FMT_RAW))
2490
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2491
gnutls.OPENPGP_FMT_RAW)
1484
2492
# Verify the self signature in the key
1485
2493
crtverify = ctypes.c_uint()
1486
(gnutls.library.functions
1487
.gnutls_openpgp_crt_verify_self(crt, 0,
1488
ctypes.byref(crtverify)))
2494
gnutls.openpgp_crt_verify_self(crt, 0,
2495
ctypes.byref(crtverify))
1489
2496
if crtverify.value != 0:
1490
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1491
raise (gnutls.errors.CertificateSecurityError
1492
("Verify failed"))
2497
gnutls.openpgp_crt_deinit(crt)
2498
raise gnutls.CertificateSecurityError(code
2499
=crtverify.value)
1493
2500
# New buffer for the fingerprint
1494
2501
buf = ctypes.create_string_buffer(20)
1495
2502
buf_len = ctypes.c_size_t()
1496
2503
# Get the fingerprint from the certificate into the buffer
1497
(gnutls.library.functions
1498
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1499
ctypes.byref(buf_len)))
2504
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2505
ctypes.byref(buf_len))
1500
2506
# Deinit the certificate
1501
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2507
gnutls.openpgp_crt_deinit(crt)
1502
2508
# Convert the buffer to a Python bytestring
1503
2509
fpr = ctypes.string_at(buf, buf_len.value)
1504
2510
# Convert the bytestring to hexadecimal notation
1505
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
2511
hex_fpr = binascii.hexlify(fpr).upper()
1506
2512
return hex_fpr
1507
2513
1508
2514
1509
class MultiprocessingMixIn(object):
2515
class MultiprocessingMixIn:
1510
2516
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2517
1511
2518
def sub_process_main(self, request, address):
1512
2519
try:
1513
2520
self.finish_request(request, address)
1514
except:
2521
except Exception:
1515
2522
self.handle_error(request, address)
1516
2523
self.close_request(request)
1517
2524
1518
2525
def process_request(self, request, address):
1519
2526
"""Start a new process to process the request."""
1520
proc = multiprocessing.Process(target = self.sub_process_main,
1521
args = (request,
1522
address))
2527
proc = multiprocessing.Process(target=self.sub_process_main,
2528
args=(request, address))
1523
2529
proc.start()
1524
2530
return proc
1525
2531
1526
2532
1527
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2533
class MultiprocessingMixInWithPipe(MultiprocessingMixIn):
1528
2534
""" adds a pipe to the MixIn """
2535
1529
2536
def process_request(self, request, client_address):
1530
2537
"""Overrides and wraps the original process_request().
1531
2538
1532
2539
This function creates a new pipe in self.pipe
1533
2540
"""
1534
2541
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1535
2542
1536
2543
proc = MultiprocessingMixIn.process_request(self, request,
1537
2544
client_address)
1538
2545
self.child_pipe.close()
1539
2546
self.add_pipe(parent_pipe, proc)
1540
2547
1541
2548
def add_pipe(self, parent_pipe, proc):
1542
2549
"""Dummy function; override as necessary"""
1543
raise NotImplementedError
2550
raise NotImplementedError()
1544
2551
1545
2552
1546
2553
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1547
socketserver.TCPServer, object):
2554
socketserver.TCPServer):
1548
2555
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1549
2556
1550
2557
Attributes:
1551
2558
enabled: Boolean; whether this server is activated yet
1552
2559
interface: None or a network interface name (string)
1553
2560
use_ipv6: Boolean; to use IPv6 or not
1554
2561
"""
2562
1555
2563
def __init__(self, server_address, RequestHandlerClass,
1556
interface=None, use_ipv6=True):
2564
interface=None,
2565
use_ipv6=True,
2566
socketfd=None):
2567
"""If socketfd is set, use that file descriptor instead of
2568
creating a new one with socket.socket().
2569
"""
1557
2570
self.interface = interface
1558
2571
if use_ipv6:
1559
2572
self.address_family = socket.AF_INET6
2573
if socketfd is not None:
2574
# Save the file descriptor
2575
self.socketfd = socketfd
2576
# Save the original socket.socket() function
2577
self.socket_socket = socket.socket
2578
2579
# To implement --socket, we monkey patch socket.socket.
2580
#
2581
# (When socketserver.TCPServer is a new-style class, we
2582
# could make self.socket into a property instead of monkey
2583
# patching socket.socket.)
2584
#
2585
# Create a one-time-only replacement for socket.socket()
2586
@functools.wraps(socket.socket)
2587
def socket_wrapper(*args, **kwargs):
2588
# Restore original function so subsequent calls are
2589
# not affected.
2590
socket.socket = self.socket_socket
2591
del self.socket_socket
2592
# This time only, return a new socket object from the
2593
# saved file descriptor.
2594
return socket.fromfd(self.socketfd, *args, **kwargs)
2595
# Replace socket.socket() function with wrapper
2596
socket.socket = socket_wrapper
2597
# The socketserver.TCPServer.__init__ will call
2598
# socket.socket(), which might be our replacement,
2599
# socket_wrapper(), if socketfd was set.
1560
2600
socketserver.TCPServer.__init__(self, server_address,
1561
2601
RequestHandlerClass)
2602
1562
2603
def server_bind(self):
1563
2604
"""This overrides the normal server_bind() function
1564
2605
to bind to an interface if one was specified, and also NOT to
1565
2606
bind to an address or port if they were not specified."""
2607
global SO_BINDTODEVICE
1566
2608
if self.interface is not None:
1567
2609
if SO_BINDTODEVICE is None:
1568
logger.error("SO_BINDTODEVICE does not exist;"
1569
" cannot bind to interface %s",
1570
self.interface)
1571
else:
1572
try:
1573
self.socket.setsockopt(socket.SOL_SOCKET,
1574
SO_BINDTODEVICE,
1575
str(self.interface
1576
+ '\0'))
1577
except socket.error as error:
1578
if error[0] == errno.EPERM:
1579
logger.error("No permission to"
1580
" bind to interface %s",
1581
self.interface)
1582
elif error[0] == errno.ENOPROTOOPT:
1583
logger.error("SO_BINDTODEVICE not available;"
1584
" cannot bind to interface %s",
1585
self.interface)
1586
else:
1587
raise
2610
# Fall back to a hard-coded value which seems to be
2611
# common enough.
2612
logger.warning("SO_BINDTODEVICE not found, trying 25")
2613
SO_BINDTODEVICE = 25
2614
try:
2615
self.socket.setsockopt(
2616
socket.SOL_SOCKET, SO_BINDTODEVICE,
2617
(self.interface + "\0").encode("utf-8"))
2618
except socket.error as error:
2619
if error.errno == errno.EPERM:
2620
logger.error("No permission to bind to"
2621
" interface %s", self.interface)
2622
elif error.errno == errno.ENOPROTOOPT:
2623
logger.error("SO_BINDTODEVICE not available;"
2624
" cannot bind to interface %s",
2625
self.interface)
2626
elif error.errno == errno.ENODEV:
2627
logger.error("Interface %s does not exist,"
2628
" cannot bind", self.interface)
2629
else:
2630
raise
1588
2631
# Only bind(2) the socket if we really need to.
1589
2632
if self.server_address[0] or self.server_address[1]:
2633
if self.server_address[1]:
2634
self.allow_reuse_address = True
1590
2635
if not self.server_address[0]:
1591
2636
if self.address_family == socket.AF_INET6:
1592
any_address = "::" # in6addr_any
2637
any_address = "::" # in6addr_any
1593
2638
else:
1594
any_address = socket.INADDR_ANY
2639
any_address = "0.0.0.0" # INADDR_ANY
1595
2640
self.server_address = (any_address,
1596
2641
self.server_address[1])
1597
2642
elif not self.server_address[1]:
1598
self.server_address = (self.server_address[0],
1599
0)
2643
self.server_address = (self.server_address[0], 0)
1600
2644
# if self.interface:
1601
2645
# self.server_address = (self.server_address[0],
1602
2646
# 0, # port
1608
2652
1609
2653
class MandosServer(IPv6_TCPServer):
1610
2654
"""Mandos server.
1611
2655
1612
2656
Attributes:
1613
2657
clients: set of Client objects
1614
2658
gnutls_priority GnuTLS priority string
1615
2659
use_dbus: Boolean; to emit D-Bus signals or not
1616
1617
Assumes a gobject.MainLoop event loop.
2660
2661
Assumes a GLib.MainLoop event loop.
1618
2662
"""
2663
1619
2664
def __init__(self, server_address, RequestHandlerClass,
1620
interface=None, use_ipv6=True, clients=None,
1621
gnutls_priority=None, use_dbus=True):
2665
interface=None,
2666
use_ipv6=True,
2667
clients=None,
2668
gnutls_priority=None,
2669
use_dbus=True,
2670
socketfd=None):
1622
2671
self.enabled = False
1623
2672
self.clients = clients
1624
2673
if self.clients is None:
1625
self.clients = set()
2674
self.clients = {}
1626
2675
self.use_dbus = use_dbus
1627
2676
self.gnutls_priority = gnutls_priority
1628
2677
IPv6_TCPServer.__init__(self, server_address,
1629
2678
RequestHandlerClass,
1630
interface = interface,
1631
use_ipv6 = use_ipv6)
2679
interface=interface,
2680
use_ipv6=use_ipv6,
2681
socketfd=socketfd)
2682
1632
2683
def server_activate(self):
1633
2684
if self.enabled:
1634
2685
return socketserver.TCPServer.server_activate(self)
1635
2686
1636
2687
def enable(self):
1637
2688
self.enabled = True
1638
2689
1639
2690
def add_pipe(self, parent_pipe, proc):
1640
2691
# Call "handle_ipc" for both data and EOF events
1641
gobject.io_add_watch(parent_pipe.fileno(),
1642
gobject.IO_IN | gobject.IO_HUP,
1643
functools.partial(self.handle_ipc,
1644
parent_pipe =
1645
parent_pipe,
1646
proc = proc))
1647
1648
def handle_ipc(self, source, condition, parent_pipe=None,
1649
proc = None, client_object=None):
1650
condition_names = {
1651
gobject.IO_IN: "IN", # There is data to read.
1652
gobject.IO_OUT: "OUT", # Data can be written (without
1653
# blocking).
1654
gobject.IO_PRI: "PRI", # There is urgent data to read.
1655
gobject.IO_ERR: "ERR", # Error condition.
1656
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1657
# broken, usually for pipes and
1658
# sockets).
1659
}
1660
conditions_string = ' | '.join(name
1661
for cond, name in
1662
condition_names.iteritems()
1663
if cond & condition)
2692
GLib.io_add_watch(
2693
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2694
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2695
functools.partial(self.handle_ipc,
2696
parent_pipe=parent_pipe,
2697
proc=proc))
2698
2699
def handle_ipc(self, source, condition,
2700
parent_pipe=None,
2701
proc=None,
2702
client_object=None):
1664
2703
# error, or the other end of multiprocessing.Pipe has closed
1665
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2704
if condition & (GLib.IO_ERR | GLib.IO_HUP):
1666
2705
# Wait for other process to exit
1667
2706
proc.join()
1668
2707
return False
1669
2708
1670
2709
# Read a request from the child
1671
2710
request = parent_pipe.recv()
1672
2711
command = request[0]
1673
2712
1674
2713
if command == 'init':
1675
fpr = request[1]
1676
address = request[2]
1677
1678
for c in self.clients:
1679
if c.fingerprint == fpr:
2714
key_id = request[1].decode("ascii")
2715
fpr = request[2].decode("ascii")
2716
address = request[3]
2717
2718
for c in self.clients.values():
2719
if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2720
continue
2721
if key_id and c.key_id == key_id:
2722
client = c
2723
break
2724
if fpr and c.fingerprint == fpr:
1680
2725
client = c
1681
2726
break
1682
2727
else:
1683
logger.info("Client not found for fingerprint: %s, ad"
1684
"dress: %s", fpr, address)
2728
logger.info("Client not found for key ID: %s, address"
2729
": %s", key_id or fpr, address)
1685
2730
if self.use_dbus:
1686
2731
# Emit D-Bus signal
1687
mandos_dbus_service.ClientNotFound(fpr,
2732
mandos_dbus_service.ClientNotFound(key_id or fpr,
1688
2733
address[0])
1689
2734
parent_pipe.send(False)
1690
2735
return False
1691
1692
gobject.io_add_watch(parent_pipe.fileno(),
1693
gobject.IO_IN | gobject.IO_HUP,
1694
functools.partial(self.handle_ipc,
1695
parent_pipe =
1696
parent_pipe,
1697
proc = proc,
1698
client_object =
1699
client))
2736
2737
GLib.io_add_watch(
2738
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2739
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2740
functools.partial(self.handle_ipc,
2741
parent_pipe=parent_pipe,
2742
proc=proc,
2743
client_object=client))
1700
2744
parent_pipe.send(True)
1701
2745
# remove the old hook in favor of the new above hook on
1702
2746
# same fileno
1705
2749
funcname = request[1]
1706
2750
args = request[2]
1707
2751
kwargs = request[3]
1708
2752
1709
2753
parent_pipe.send(('data', getattr(client_object,
1710
2754
funcname)(*args,
1711
**kwargs)))
1712
2755
**kwargs)))
2756
1713
2757
if command == 'getattr':
1714
2758
attrname = request[1]
1715
if callable(client_object.__getattribute__(attrname)):
1716
parent_pipe.send(('function',))
2759
if isinstance(client_object.__getattribute__(attrname),
2760
collections.abc.Callable):
2761
parent_pipe.send(('function', ))
1717
2762
else:
1718
parent_pipe.send(('data', client_object
1719
.__getattribute__(attrname)))
1720
2763
parent_pipe.send((
2764
'data', client_object.__getattribute__(attrname)))
2765
1721
2766
if command == 'setattr':
1722
2767
attrname = request[1]
1723
2768
value = request[2]
1724
2769
setattr(client_object, attrname, value)
1725
2770
1726
2771
return True
1727
2772
1728
2773
2774
def rfc3339_duration_to_delta(duration):
2775
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2776
2777
>>> rfc3339_duration_to_delta("P7D") == datetime.timedelta(7)
2778
True
2779
>>> rfc3339_duration_to_delta("PT60S") == datetime.timedelta(0, 60)
2780
True
2781
>>> rfc3339_duration_to_delta("PT60M") == datetime.timedelta(0, 3600)
2782
True
2783
>>> rfc3339_duration_to_delta("PT24H") == datetime.timedelta(1)
2784
True
2785
>>> rfc3339_duration_to_delta("P1W") == datetime.timedelta(7)
2786
True
2787
>>> rfc3339_duration_to_delta("PT5M30S") == datetime.timedelta(0, 330)
2788
True
2789
>>> rfc3339_duration_to_delta("P1DT3M20S") == datetime.timedelta(1, 200)
2790
True
2791
"""
2792
2793
# Parsing an RFC 3339 duration with regular expressions is not
2794
# possible - there would have to be multiple places for the same
2795
# values, like seconds. The current code, while more esoteric, is
2796
# cleaner without depending on a parsing library. If Python had a
2797
# built-in library for parsing we would use it, but we'd like to
2798
# avoid excessive use of external libraries.
2799
2800
# New type for defining tokens, syntax, and semantics all-in-one
2801
Token = collections.namedtuple("Token", (
2802
"regexp", # To match token; if "value" is not None, must have
2803
# a "group" containing digits
2804
"value", # datetime.timedelta or None
2805
"followers")) # Tokens valid after this token
2806
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2807
# the "duration" ABNF definition in RFC 3339, Appendix A.
2808
token_end = Token(re.compile(r"$"), None, frozenset())
2809
token_second = Token(re.compile(r"(\d+)S"),
2810
datetime.timedelta(seconds=1),
2811
frozenset((token_end, )))
2812
token_minute = Token(re.compile(r"(\d+)M"),
2813
datetime.timedelta(minutes=1),
2814
frozenset((token_second, token_end)))
2815
token_hour = Token(re.compile(r"(\d+)H"),
2816
datetime.timedelta(hours=1),
2817
frozenset((token_minute, token_end)))
2818
token_time = Token(re.compile(r"T"),
2819
None,
2820
frozenset((token_hour, token_minute,
2821
token_second)))
2822
token_day = Token(re.compile(r"(\d+)D"),
2823
datetime.timedelta(days=1),
2824
frozenset((token_time, token_end)))
2825
token_month = Token(re.compile(r"(\d+)M"),
2826
datetime.timedelta(weeks=4),
2827
frozenset((token_day, token_end)))
2828
token_year = Token(re.compile(r"(\d+)Y"),
2829
datetime.timedelta(weeks=52),
2830
frozenset((token_month, token_end)))
2831
token_week = Token(re.compile(r"(\d+)W"),
2832
datetime.timedelta(weeks=1),
2833
frozenset((token_end, )))
2834
token_duration = Token(re.compile(r"P"), None,
2835
frozenset((token_year, token_month,
2836
token_day, token_time,
2837
token_week)))
2838
# Define starting values:
2839
# Value so far
2840
value = datetime.timedelta()
2841
found_token = None
2842
# Following valid tokens
2843
followers = frozenset((token_duration, ))
2844
# String left to parse
2845
s = duration
2846
# Loop until end token is found
2847
while found_token is not token_end:
2848
# Search for any currently valid tokens
2849
for token in followers:
2850
match = token.regexp.match(s)
2851
if match is not None:
2852
# Token found
2853
if token.value is not None:
2854
# Value found, parse digits
2855
factor = int(match.group(1), 10)
2856
# Add to value so far
2857
value += factor * token.value
2858
# Strip token from string
2859
s = token.regexp.sub("", s, 1)
2860
# Go to found token
2861
found_token = token
2862
# Set valid next tokens
2863
followers = found_token.followers
2864
break
2865
else:
2866
# No currently valid tokens were found
2867
raise ValueError("Invalid RFC 3339 duration: {!r}"
2868
.format(duration))
2869
# End token found
2870
return value
2871
2872
1729
2873
def string_to_delta(interval):
1730
2874
"""Parse a string and return a datetime.timedelta
1731
1732
>>> string_to_delta('7d')
1733
datetime.timedelta(7)
1734
>>> string_to_delta('60s')
1735
datetime.timedelta(0, 60)
1736
>>> string_to_delta('60m')
1737
datetime.timedelta(0, 3600)
1738
>>> string_to_delta('24h')
1739
datetime.timedelta(1)
1740
>>> string_to_delta('1w')
1741
datetime.timedelta(7)
1742
>>> string_to_delta('5m 30s')
1743
datetime.timedelta(0, 330)
2875
2876
>>> string_to_delta('7d') == datetime.timedelta(7)
2877
True
2878
>>> string_to_delta('60s') == datetime.timedelta(0, 60)
2879
True
2880
>>> string_to_delta('60m') == datetime.timedelta(0, 3600)
2881
True
2882
>>> string_to_delta('24h') == datetime.timedelta(1)
2883
True
2884
>>> string_to_delta('1w') == datetime.timedelta(7)
2885
True
2886
>>> string_to_delta('5m 30s') == datetime.timedelta(0, 330)
2887
True
1744
2888
"""
2889
2890
try:
2891
return rfc3339_duration_to_delta(interval)
2892
except ValueError:
2893
pass
2894
1745
2895
timevalue = datetime.timedelta(0)
1746
2896
for s in interval.split():
1747
2897
try:
1748
suffix = unicode(s[-1])
2898
suffix = s[-1]
1749
2899
value = int(s[:-1])
1750
2900
if suffix == "d":
1751
2901
delta = datetime.timedelta(value)
1758
2908
elif suffix == "w":
1759
2909
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1760
2910
else:
1761
raise ValueError("Unknown suffix %r" % suffix)
1762
except (ValueError, IndexError) as e:
2911
raise ValueError("Unknown suffix {!r}".format(suffix))
2912
except IndexError as e:
1763
2913
raise ValueError(*(e.args))
1764
2914
timevalue += delta
1765
2915
return timevalue
1766
2916
1767
2917
1768
def if_nametoindex(interface):
1769
"""Call the C function if_nametoindex(), or equivalent
1770
1771
Note: This function cannot accept a unicode string."""
1772
global if_nametoindex
1773
try:
1774
if_nametoindex = (ctypes.cdll.LoadLibrary
1775
(ctypes.util.find_library("c"))
1776
.if_nametoindex)
1777
except (OSError, AttributeError):
1778
logger.warning("Doing if_nametoindex the hard way")
1779
def if_nametoindex(interface):
1780
"Get an interface index the hard way, i.e. using fcntl()"
1781
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1782
with contextlib.closing(socket.socket()) as s:
1783
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1784
struct.pack(str("16s16x"),
1785
interface))
1786
interface_index = struct.unpack(str("I"),
1787
ifreq[16:20])[0]
1788
return interface_index
1789
return if_nametoindex(interface)
1790
1791
1792
def daemon(nochdir = False, noclose = False):
2918
def daemon(nochdir=False, noclose=False):
1793
2919
"""See daemon(3). Standard BSD Unix function.
1794
2920
1795
2921
This should really exist as os.daemon, but it doesn't (yet)."""
1796
2922
if os.fork():
1797
2923
sys.exit()
1802
2928
sys.exit()
1803
2929
if not noclose:
1804
2930
# Close all standard open file descriptors
1805
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2931
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1806
2932
if not stat.S_ISCHR(os.fstat(null).st_mode):
1807
2933
raise OSError(errno.ENODEV,
1808
"%s not a character device"
1809
% os.path.devnull)
2934
"{} not a character device"
2935
.format(os.devnull))
1810
2936
os.dup2(null, sys.stdin.fileno())
1811
2937
os.dup2(null, sys.stdout.fileno())
1812
2938
os.dup2(null, sys.stderr.fileno())
1815
2941
1816
2942
1817
2943
def main():
1818
2944
1819
2945
##################################################################
1820
2946
# Parsing of options, both command line and config file
1821
2947
1822
2948
parser = argparse.ArgumentParser()
1823
2949
parser.add_argument("-v", "--version", action="version",
1824
version = "%%(prog)s %s" % version,
2950
version="%(prog)s {}".format(version),
1825
2951
help="show version number and exit")
1826
2952
parser.add_argument("-i", "--interface", metavar="IF",
1827
2953
help="Bind to interface IF")
1833
2959
help="Run self-test")
1834
2960
parser.add_argument("--debug", action="store_true",
1835
2961
help="Debug mode; run in foreground and log"
1836
" to terminal")
2962
" to terminal", default=None)
1837
2963
parser.add_argument("--debuglevel", metavar="LEVEL",
1838
2964
help="Debug level for stdout output")
1839
2965
parser.add_argument("--priority", help="GnuTLS"
1846
2972
" files")
1847
2973
parser.add_argument("--no-dbus", action="store_false",
1848
2974
dest="use_dbus", help="Do not provide D-Bus"
1849
" system bus interface")
2975
" system bus interface", default=None)
1850
2976
parser.add_argument("--no-ipv6", action="store_false",
1851
dest="use_ipv6", help="Do not use IPv6")
2977
dest="use_ipv6", help="Do not use IPv6",
2978
default=None)
2979
parser.add_argument("--no-restore", action="store_false",
2980
dest="restore", help="Do not restore stored"
2981
" state", default=None)
2982
parser.add_argument("--socket", type=int,
2983
help="Specify a file descriptor to a network"
2984
" socket to use instead of creating one")
2985
parser.add_argument("--statedir", metavar="DIR",
2986
help="Directory to save/restore state in")
2987
parser.add_argument("--foreground", action="store_true",
2988
help="Run in foreground", default=None)
2989
parser.add_argument("--no-zeroconf", action="store_false",
2990
dest="zeroconf", help="Do not use Zeroconf",
2991
default=None)
2992
1852
2993
options = parser.parse_args()
1853
1854
if options.check:
1855
import doctest
1856
doctest.testmod()
1857
sys.exit()
1858
2994
1859
2995
# Default values for config file for server-global settings
1860
server_defaults = { "interface": "",
1861
"address": "",
1862
"port": "",
1863
"debug": "False",
1864
"priority":
1865
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1866
"servicename": "Mandos",
1867
"use_dbus": "True",
1868
"use_ipv6": "True",
1869
"debuglevel": "",
1870
}
1871
2996
if gnutls.has_rawpk:
2997
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
2998
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
2999
else:
3000
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
3001
":+SIGN-DSA-SHA256")
3002
server_defaults = {"interface": "",
3003
"address": "",
3004
"port": "",
3005
"debug": "False",
3006
"priority": priority,
3007
"servicename": "Mandos",
3008
"use_dbus": "True",
3009
"use_ipv6": "True",
3010
"debuglevel": "",
3011
"restore": "True",
3012
"socket": "",
3013
"statedir": "/var/lib/mandos",
3014
"foreground": "False",
3015
"zeroconf": "True",
3016
}
3017
del priority
3018
1872
3019
# Parse config file for server-global settings
1873
server_config = configparser.SafeConfigParser(server_defaults)
3020
server_config = configparser.ConfigParser(server_defaults)
1874
3021
del server_defaults
1875
server_config.read(os.path.join(options.configdir,
1876
"mandos.conf"))
1877
# Convert the SafeConfigParser object to a dict
3022
server_config.read(os.path.join(options.configdir, "mandos.conf"))
3023
# Convert the ConfigParser object to a dict
1878
3024
server_settings = server_config.defaults()
1879
3025
# Use the appropriate methods on the non-string config options
1880
for option in ("debug", "use_dbus", "use_ipv6"):
3026
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3027
"foreground", "zeroconf"):
1881
3028
server_settings[option] = server_config.getboolean("DEFAULT",
1882
3029
option)
1883
3030
if server_settings["port"]:
1884
3031
server_settings["port"] = server_config.getint("DEFAULT",
1885
3032
"port")
3033
if server_settings["socket"]:
3034
server_settings["socket"] = server_config.getint("DEFAULT",
3035
"socket")
3036
# Later, stdin will, and stdout and stderr might, be dup'ed
3037
# over with an opened os.devnull. But we don't want this to
3038
# happen with a supplied network socket.
3039
if 0 <= server_settings["socket"] <= 2:
3040
server_settings["socket"] = os.dup(server_settings
3041
["socket"])
1886
3042
del server_config
1887
3043
1888
3044
# Override the settings from the config file with command line
1889
3045
# options, if set.
1890
3046
for option in ("interface", "address", "port", "debug",
1891
"priority", "servicename", "configdir",
1892
"use_dbus", "use_ipv6", "debuglevel"):
3047
"priority", "servicename", "configdir", "use_dbus",
3048
"use_ipv6", "debuglevel", "restore", "statedir",
3049
"socket", "foreground", "zeroconf"):
1893
3050
value = getattr(options, option)
1894
3051
if value is not None:
1895
3052
server_settings[option] = value
1896
3053
del options
1897
3054
# Force all strings to be unicode
1898
3055
for option in server_settings.keys():
1899
if type(server_settings[option]) is str:
1900
server_settings[option] = unicode(server_settings[option])
3056
if isinstance(server_settings[option], bytes):
3057
server_settings[option] = (server_settings[option]
3058
.decode("utf-8"))
3059
# Force all boolean options to be boolean
3060
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3061
"foreground", "zeroconf"):
3062
server_settings[option] = bool(server_settings[option])
3063
# Debug implies foreground
3064
if server_settings["debug"]:
3065
server_settings["foreground"] = True
1901
3066
# Now we have our good server settings in "server_settings"
1902
3067
1903
3068
##################################################################
1904
3069
3070
if (not server_settings["zeroconf"]
3071
and not (server_settings["port"]
3072
or server_settings["socket"] != "")):
3073
parser.error("Needs port or socket to work without Zeroconf")
3074
1905
3075
# For convenience
1906
3076
debug = server_settings["debug"]
1907
3077
debuglevel = server_settings["debuglevel"]
1908
3078
use_dbus = server_settings["use_dbus"]
1909
3079
use_ipv6 = server_settings["use_ipv6"]
1910
3080
stored_state_path = os.path.join(server_settings["statedir"],
3081
stored_state_file)
3082
foreground = server_settings["foreground"]
3083
zeroconf = server_settings["zeroconf"]
3084
3085
if debug:
3086
initlogger(debug, logging.DEBUG)
3087
else:
3088
if not debuglevel:
3089
initlogger(debug)
3090
else:
3091
level = getattr(logging, debuglevel.upper())
3092
initlogger(debug, level)
3093
1911
3094
if server_settings["servicename"] != "Mandos":
1912
syslogger.setFormatter(logging.Formatter
1913
('Mandos (%s) [%%(process)d]:'
1914
' %%(levelname)s: %%(message)s'
1915
% server_settings["servicename"]))
1916
3095
syslogger.setFormatter(
3096
logging.Formatter('Mandos ({}) [%(process)d]:'
3097
' %(levelname)s: %(message)s'.format(
3098
server_settings["servicename"])))
3099
1917
3100
# Parse config file with clients
1918
client_defaults = { "timeout": "5m",
1919
"extended_timeout": "15m",
1920
"interval": "2m",
1921
"checker": "fping -q -- %%(host)s",
1922
"host": "",
1923
"approval_delay": "0s",
1924
"approval_duration": "1s",
1925
}
1926
client_config = configparser.SafeConfigParser(client_defaults)
3101
client_config = configparser.ConfigParser(Client.client_defaults)
1927
3102
client_config.read(os.path.join(server_settings["configdir"],
1928
3103
"clients.conf"))
1929
3104
1930
3105
global mandos_dbus_service
1931
3106
mandos_dbus_service = None
1932
1933
tcp_server = MandosServer((server_settings["address"],
1934
server_settings["port"]),
1935
ClientHandler,
1936
interface=(server_settings["interface"]
1937
or None),
1938
use_ipv6=use_ipv6,
1939
gnutls_priority=
1940
server_settings["priority"],
1941
use_dbus=use_dbus)
1942
if not debug:
1943
pidfilename = "/var/run/mandos.pid"
1944
try:
1945
pidfile = open(pidfilename, "w")
1946
except IOError:
1947
logger.error("Could not open file %r", pidfilename)
1948
1949
try:
1950
uid = pwd.getpwnam("_mandos").pw_uid
1951
gid = pwd.getpwnam("_mandos").pw_gid
1952
except KeyError:
1953
try:
1954
uid = pwd.getpwnam("mandos").pw_uid
1955
gid = pwd.getpwnam("mandos").pw_gid
3107
3108
socketfd = None
3109
if server_settings["socket"] != "":
3110
socketfd = server_settings["socket"]
3111
tcp_server = MandosServer(
3112
(server_settings["address"], server_settings["port"]),
3113
ClientHandler,
3114
interface=(server_settings["interface"] or None),
3115
use_ipv6=use_ipv6,
3116
gnutls_priority=server_settings["priority"],
3117
use_dbus=use_dbus,
3118
socketfd=socketfd)
3119
if not foreground:
3120
pidfilename = "/run/mandos.pid"
3121
if not os.path.isdir("/run/."):
3122
pidfilename = "/var/run/mandos.pid"
3123
pidfile = None
3124
try:
3125
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3126
except IOError as e:
3127
logger.error("Could not open file %r", pidfilename,
3128
exc_info=e)
3129
3130
for name, group in (("_mandos", "_mandos"),
3131
("mandos", "mandos"),
3132
("nobody", "nogroup")):
3133
try:
3134
uid = pwd.getpwnam(name).pw_uid
3135
gid = pwd.getpwnam(group).pw_gid
3136
break
1956
3137
except KeyError:
1957
try:
1958
uid = pwd.getpwnam("nobody").pw_uid
1959
gid = pwd.getpwnam("nobody").pw_gid
1960
except KeyError:
1961
uid = 65534
1962
gid = 65534
3138
continue
3139
else:
3140
uid = 65534
3141
gid = 65534
1963
3142
try:
1964
3143
os.setgid(gid)
1965
3144
os.setuid(uid)
3145
if debug:
3146
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3147
gid))
1966
3148
except OSError as error:
1967
if error[0] != errno.EPERM:
1968
raise error
1969
1970
if not debug and not debuglevel:
1971
syslogger.setLevel(logging.WARNING)
1972
console.setLevel(logging.WARNING)
1973
if debuglevel:
1974
level = getattr(logging, debuglevel.upper())
1975
syslogger.setLevel(level)
1976
console.setLevel(level)
1977
3149
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3150
.format(uid, gid, os.strerror(error.errno)))
3151
if error.errno != errno.EPERM:
3152
raise
3153
1978
3154
if debug:
1979
3155
# Enable all possible GnuTLS debugging
1980
3156
1981
3157
# "Use a log level over 10 to enable all debugging options."
1982
3158
# - GnuTLS manual
1983
gnutls.library.functions.gnutls_global_set_log_level(11)
1984
1985
@gnutls.library.types.gnutls_log_func
3159
gnutls.global_set_log_level(11)
3160
3161
@gnutls.log_func
1986
3162
def debug_gnutls(level, string):
1987
3163
logger.debug("GnuTLS: %s", string[:-1])
1988
1989
(gnutls.library.functions
1990
.gnutls_global_set_log_function(debug_gnutls))
1991
3164
3165
gnutls.global_set_log_function(debug_gnutls)
3166
1992
3167
# Redirect stdin so all checkers get /dev/null
1993
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3168
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1994
3169
os.dup2(null, sys.stdin.fileno())
1995
3170
if null > 2:
1996
3171
os.close(null)
1997
else:
1998
# No console logging
1999
logger.removeHandler(console)
2000
3172
2001
3173
# Need to fork before connecting to D-Bus
2002
if not debug:
3174
if not foreground:
2003
3175
# Close all input and output, do double fork, etc.
2004
3176
daemon()
2005
3177
3178
if gi.version_info < (3, 10, 2):
3179
# multiprocessing will use threads, so before we use GLib we
3180
# need to inform GLib that threads will be used.
3181
GLib.threads_init()
3182
2006
3183
global main_loop
2007
3184
# From the Avahi example code
2008
DBusGMainLoop(set_as_default=True )
2009
main_loop = gobject.MainLoop()
3185
DBusGMainLoop(set_as_default=True)
3186
main_loop = GLib.MainLoop()
2010
3187
bus = dbus.SystemBus()
2011
3188
# End of Avahi example code
2012
3189
if use_dbus:
2013
3190
try:
2014
3191
bus_name = dbus.service.BusName("se.recompile.Mandos",
2015
bus, do_not_queue=True)
2016
old_bus_name = (dbus.service.BusName
2017
("se.bsnet.fukt.Mandos", bus,
2018
do_not_queue=True))
2019
except dbus.exceptions.NameExistsException as e:
2020
logger.error(unicode(e) + ", disabling D-Bus")
3192
bus,
3193
do_not_queue=True)
3194
old_bus_name = dbus.service.BusName(
3195
"se.bsnet.fukt.Mandos", bus,
3196
do_not_queue=True)
3197
except dbus.exceptions.DBusException as e:
3198
logger.error("Disabling D-Bus:", exc_info=e)
2021
3199
use_dbus = False
2022
3200
server_settings["use_dbus"] = False
2023
3201
tcp_server.use_dbus = False
2024
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2025
service = AvahiService(name = server_settings["servicename"],
2026
servicetype = "_mandos._tcp",
2027
protocol = protocol, bus = bus)
2028
if server_settings["interface"]:
2029
service.interface = (if_nametoindex
2030
(str(server_settings["interface"])))
2031
3202
if zeroconf:
3203
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3204
service = AvahiServiceToSyslog(
3205
name=server_settings["servicename"],
3206
servicetype="_mandos._tcp",
3207
protocol=protocol,
3208
bus=bus)
3209
if server_settings["interface"]:
3210
service.interface = if_nametoindex(
3211
server_settings["interface"].encode("utf-8"))
3212
2032
3213
global multiprocessing_manager
2033
3214
multiprocessing_manager = multiprocessing.Manager()
2034
3215
2035
3216
client_class = Client
2036
3217
if use_dbus:
2037
client_class = functools.partial(ClientDBusTransitional,
2038
bus = bus)
2039
def client_config_items(config, section):
2040
special_settings = {
2041
"approved_by_default":
2042
lambda: config.getboolean(section,
2043
"approved_by_default"),
2044
}
2045
for name, value in config.items(section):
3218
client_class = functools.partial(ClientDBus, bus=bus)
3219
3220
client_settings = Client.config_parser(client_config)
3221
old_client_settings = {}
3222
clients_data = {}
3223
3224
# This is used to redirect stdout and stderr for checker processes
3225
global wnull
3226
wnull = open(os.devnull, "w") # A writable /dev/null
3227
# Only used if server is running in foreground but not in debug
3228
# mode
3229
if debug or not foreground:
3230
wnull.close()
3231
3232
# Get client data and settings from last running state.
3233
if server_settings["restore"]:
3234
try:
3235
with open(stored_state_path, "rb") as stored_state:
3236
if sys.version_info.major == 2:
3237
clients_data, old_client_settings = pickle.load(
3238
stored_state)
3239
else:
3240
bytes_clients_data, bytes_old_client_settings = (
3241
pickle.load(stored_state, encoding="bytes"))
3242
# Fix bytes to strings
3243
# clients_data
3244
# .keys()
3245
clients_data = {(key.decode("utf-8")
3246
if isinstance(key, bytes)
3247
else key): value
3248
for key, value in
3249
bytes_clients_data.items()}
3250
del bytes_clients_data
3251
for key in clients_data:
3252
value = {(k.decode("utf-8")
3253
if isinstance(k, bytes) else k): v
3254
for k, v in
3255
clients_data[key].items()}
3256
clients_data[key] = value
3257
# .client_structure
3258
value["client_structure"] = [
3259
(s.decode("utf-8")
3260
if isinstance(s, bytes)
3261
else s) for s in
3262
value["client_structure"]]
3263
# .name, .host, and .checker_command
3264
for k in ("name", "host", "checker_command"):
3265
if isinstance(value[k], bytes):
3266
value[k] = value[k].decode("utf-8")
3267
if "key_id" not in value:
3268
value["key_id"] = ""
3269
elif "fingerprint" not in value:
3270
value["fingerprint"] = ""
3271
# old_client_settings
3272
# .keys()
3273
old_client_settings = {
3274
(key.decode("utf-8")
3275
if isinstance(key, bytes)
3276
else key): value
3277
for key, value in
3278
bytes_old_client_settings.items()}
3279
del bytes_old_client_settings
3280
# .host and .checker_command
3281
for value in old_client_settings.values():
3282
for attribute in ("host", "checker_command"):
3283
if isinstance(value[attribute], bytes):
3284
value[attribute] = (value[attribute]
3285
.decode("utf-8"))
3286
os.remove(stored_state_path)
3287
except IOError as e:
3288
if e.errno == errno.ENOENT:
3289
logger.warning("Could not load persistent state:"
3290
" {}".format(os.strerror(e.errno)))
3291
else:
3292
logger.critical("Could not load persistent state:",
3293
exc_info=e)
3294
raise
3295
except EOFError as e:
3296
logger.warning("Could not load persistent state: "
3297
"EOFError:",
3298
exc_info=e)
3299
3300
with PGPEngine() as pgp:
3301
for client_name, client in clients_data.items():
3302
# Skip removed clients
3303
if client_name not in client_settings:
3304
continue
3305
3306
# Decide which value to use after restoring saved state.
3307
# We have three different values: Old config file,
3308
# new config file, and saved state.
3309
# New config value takes precedence if it differs from old
3310
# config value, otherwise use saved state.
3311
for name, value in client_settings[client_name].items():
3312
try:
3313
# For each value in new config, check if it
3314
# differs from the old config value (Except for
3315
# the "secret" attribute)
3316
if (name != "secret"
3317
and (value !=
3318
old_client_settings[client_name][name])):
3319
client[name] = value
3320
except KeyError:
3321
pass
3322
3323
# Clients who has passed its expire date can still be
3324
# enabled if its last checker was successful. A Client
3325
# whose checker succeeded before we stored its state is
3326
# assumed to have successfully run all checkers during
3327
# downtime.
3328
if client["enabled"]:
3329
if datetime.datetime.utcnow() >= client["expires"]:
3330
if not client["last_checked_ok"]:
3331
logger.warning(
3332
"disabling client {} - Client never "
3333
"performed a successful checker".format(
3334
client_name))
3335
client["enabled"] = False
3336
elif client["last_checker_status"] != 0:
3337
logger.warning(
3338
"disabling client {} - Client last"
3339
" checker failed with error code"
3340
" {}".format(
3341
client_name,
3342
client["last_checker_status"]))
3343
client["enabled"] = False
3344
else:
3345
client["expires"] = (
3346
datetime.datetime.utcnow()
3347
+ client["timeout"])
3348
logger.debug("Last checker succeeded,"
3349
" keeping {} enabled".format(
3350
client_name))
2046
3351
try:
2047
yield (name, special_settings[name]())
2048
except KeyError:
2049
yield (name, value)
2050
2051
tcp_server.clients.update(set(
2052
client_class(name = section,
2053
config= dict(client_config_items(
2054
client_config, section)))
2055
for section in client_config.sections()))
3352
client["secret"] = pgp.decrypt(
3353
client["encrypted_secret"],
3354
client_settings[client_name]["secret"])
3355
except PGPError:
3356
# If decryption fails, we use secret from new settings
3357
logger.debug("Failed to decrypt {} old secret".format(
3358
client_name))
3359
client["secret"] = (client_settings[client_name]
3360
["secret"])
3361
3362
# Add/remove clients based on new changes made to config
3363
for client_name in (set(old_client_settings)
3364
- set(client_settings)):
3365
del clients_data[client_name]
3366
for client_name in (set(client_settings)
3367
- set(old_client_settings)):
3368
clients_data[client_name] = client_settings[client_name]
3369
3370
# Create all client objects
3371
for client_name, client in clients_data.items():
3372
tcp_server.clients[client_name] = client_class(
3373
name=client_name,
3374
settings=client,
3375
server_settings=server_settings)
3376
2056
3377
if not tcp_server.clients:
2057
3378
logger.warning("No clients defined")
2058
2059
if not debug:
2060
try:
2061
with pidfile:
2062
pid = os.getpid()
2063
pidfile.write(str(pid) + "\n".encode("utf-8"))
2064
del pidfile
2065
except IOError:
2066
logger.error("Could not write to file %r with PID %d",
2067
pidfilename, pid)
2068
except NameError:
2069
# "pidfile" was never created
2070
pass
3379
3380
if not foreground:
3381
if pidfile is not None:
3382
pid = os.getpid()
3383
try:
3384
with pidfile:
3385
print(pid, file=pidfile)
3386
except IOError:
3387
logger.error("Could not write to file %r with PID %d",
3388
pidfilename, pid)
3389
del pidfile
2071
3390
del pidfilename
2072
2073
signal.signal(signal.SIGINT, signal.SIG_IGN)
2074
2075
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2076
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2077
3391
3392
for termsig in (signal.SIGHUP, signal.SIGTERM):
3393
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3394
lambda: main_loop.quit() and False)
3395
2078
3396
if use_dbus:
2079
class MandosDBusService(dbus.service.Object):
3397
3398
@alternate_dbus_interfaces(
3399
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3400
class MandosDBusService(DBusObjectWithObjectManager):
2080
3401
"""A D-Bus proxy object"""
3402
2081
3403
def __init__(self):
2082
3404
dbus.service.Object.__init__(self, bus, "/")
3405
2083
3406
_interface = "se.recompile.Mandos"
2084
3407
2085
3408
@dbus.service.signal(_interface, signature="o")
2086
3409
def ClientAdded(self, objpath):
2087
3410
"D-Bus signal"
2088
3411
pass
2089
3412
2090
3413
@dbus.service.signal(_interface, signature="ss")
2091
def ClientNotFound(self, fingerprint, address):
3414
def ClientNotFound(self, key_id, address):
2092
3415
"D-Bus signal"
2093
3416
pass
2094
3417
3418
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3419
"true"})
2095
3420
@dbus.service.signal(_interface, signature="os")
2096
3421
def ClientRemoved(self, objpath, name):
2097
3422
"D-Bus signal"
2098
3423
pass
2099
3424
3425
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3426
"true"})
2100
3427
@dbus.service.method(_interface, out_signature="ao")
2101
3428
def GetAllClients(self):
2102
3429
"D-Bus method"
2103
return dbus.Array(c.dbus_object_path
2104
for c in tcp_server.clients)
2105
3430
return dbus.Array(c.dbus_object_path for c in
3431
tcp_server.clients.values())
3432
3433
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3434
"true"})
2106
3435
@dbus.service.method(_interface,
2107
3436
out_signature="a{oa{sv}}")
2108
3437
def GetAllClientsWithProperties(self):
2109
3438
"D-Bus method"
2110
3439
return dbus.Dictionary(
2111
((c.dbus_object_path, c.GetAll(""))
2112
for c in tcp_server.clients),
3440
{c.dbus_object_path: c.GetAll(
3441
"se.recompile.Mandos.Client")
3442
for c in tcp_server.clients.values()},
2113
3443
signature="oa{sv}")
2114
3444
2115
3445
@dbus.service.method(_interface, in_signature="o")
2116
3446
def RemoveClient(self, object_path):
2117
3447
"D-Bus method"
2118
for c in tcp_server.clients:
3448
for c in tcp_server.clients.values():
2119
3449
if c.dbus_object_path == object_path:
2120
tcp_server.clients.remove(c)
3450
del tcp_server.clients[c.name]
2121
3451
c.remove_from_connection()
2122
# Don't signal anything except ClientRemoved
3452
# Don't signal the disabling
2123
3453
c.disable(quiet=True)
2124
# Emit D-Bus signal
2125
self.ClientRemoved(object_path, c.name)
3454
# Emit D-Bus signal for removal
3455
self.client_removed_signal(c)
2126
3456
return
2127
3457
raise KeyError(object_path)
2128
3458
2129
3459
del _interface
2130
2131
class MandosDBusServiceTransitional(MandosDBusService):
2132
__metaclass__ = AlternateDBusNamesMetaclass
2133
mandos_dbus_service = MandosDBusServiceTransitional()
2134
3460
3461
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3462
out_signature="a{oa{sa{sv}}}")
3463
def GetManagedObjects(self):
3464
"""D-Bus method"""
3465
return dbus.Dictionary(
3466
{client.dbus_object_path:
3467
dbus.Dictionary(
3468
{interface: client.GetAll(interface)
3469
for interface in
3470
client._get_all_interface_names()})
3471
for client in tcp_server.clients.values()})
3472
3473
def client_added_signal(self, client):
3474
"""Send the new standard signal and the old signal"""
3475
if use_dbus:
3476
# New standard signal
3477
self.InterfacesAdded(
3478
client.dbus_object_path,
3479
dbus.Dictionary(
3480
{interface: client.GetAll(interface)
3481
for interface in
3482
client._get_all_interface_names()}))
3483
# Old signal
3484
self.ClientAdded(client.dbus_object_path)
3485
3486
def client_removed_signal(self, client):
3487
"""Send the new standard signal and the old signal"""
3488
if use_dbus:
3489
# New standard signal
3490
self.InterfacesRemoved(
3491
client.dbus_object_path,
3492
client._get_all_interface_names())
3493
# Old signal
3494
self.ClientRemoved(client.dbus_object_path,
3495
client.name)
3496
3497
mandos_dbus_service = MandosDBusService()
3498
3499
# Save modules to variables to exempt the modules from being
3500
# unloaded before the function registered with atexit() is run.
3501
mp = multiprocessing
3502
wn = wnull
3503
2135
3504
def cleanup():
2136
3505
"Cleanup function; run on exit"
2137
service.cleanup()
2138
2139
multiprocessing.active_children()
3506
if zeroconf:
3507
service.cleanup()
3508
3509
mp.active_children()
3510
wn.close()
3511
if not (tcp_server.clients or client_settings):
3512
return
3513
3514
# Store client before exiting. Secrets are encrypted with key
3515
# based on what config file has. If config file is
3516
# removed/edited, old secret will thus be unrecovable.
3517
clients = {}
3518
with PGPEngine() as pgp:
3519
for client in tcp_server.clients.values():
3520
key = client_settings[client.name]["secret"]
3521
client.encrypted_secret = pgp.encrypt(client.secret,
3522
key)
3523
client_dict = {}
3524
3525
# A list of attributes that can not be pickled
3526
# + secret.
3527
exclude = {"bus", "changedstate", "secret",
3528
"checker", "server_settings"}
3529
for name, typ in inspect.getmembers(dbus.service
3530
.Object):
3531
exclude.add(name)
3532
3533
client_dict["encrypted_secret"] = (client
3534
.encrypted_secret)
3535
for attr in client.client_structure:
3536
if attr not in exclude:
3537
client_dict[attr] = getattr(client, attr)
3538
3539
clients[client.name] = client_dict
3540
del client_settings[client.name]["secret"]
3541
3542
try:
3543
with tempfile.NamedTemporaryFile(
3544
mode='wb',
3545
suffix=".pickle",
3546
prefix='clients-',
3547
dir=os.path.dirname(stored_state_path),
3548
delete=False) as stored_state:
3549
pickle.dump((clients, client_settings), stored_state,
3550
protocol=2)
3551
tempname = stored_state.name
3552
os.rename(tempname, stored_state_path)
3553
except (IOError, OSError) as e:
3554
if not debug:
3555
try:
3556
os.remove(tempname)
3557
except NameError:
3558
pass
3559
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3560
logger.warning("Could not save persistent state: {}"
3561
.format(os.strerror(e.errno)))
3562
else:
3563
logger.warning("Could not save persistent state:",
3564
exc_info=e)
3565
raise
3566
3567
# Delete all clients, and settings from config
2140
3568
while tcp_server.clients:
2141
client = tcp_server.clients.pop()
3569
name, client = tcp_server.clients.popitem()
2142
3570
if use_dbus:
2143
3571
client.remove_from_connection()
2144
client.disable_hook = None
2145
# Don't signal anything except ClientRemoved
3572
# Don't signal the disabling
2146
3573
client.disable(quiet=True)
3574
# Emit D-Bus signal for removal
2147
3575
if use_dbus:
2148
# Emit D-Bus signal
2149
mandos_dbus_service.ClientRemoved(client
2150
.dbus_object_path,
2151
client.name)
2152
3576
mandos_dbus_service.client_removed_signal(client)
3577
client_settings.clear()
3578
2153
3579
atexit.register(cleanup)
2154
2155
for client in tcp_server.clients:
3580
3581
for client in tcp_server.clients.values():
2156
3582
if use_dbus:
2157
# Emit D-Bus signal
2158
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2159
client.enable()
2160
3583
# Emit D-Bus signal for adding
3584
mandos_dbus_service.client_added_signal(client)
3585
# Need to initiate checking of clients
3586
if client.enabled:
3587
client.init_checker()
3588
2161
3589
tcp_server.enable()
2162
3590
tcp_server.server_activate()
2163
3591
2164
3592
# Find out what port we got
2165
service.port = tcp_server.socket.getsockname()[1]
3593
if zeroconf:
3594
service.port = tcp_server.socket.getsockname()[1]
2166
3595
if use_ipv6:
2167
3596
logger.info("Now listening on address %r, port %d,"
2168
" flowinfo %d, scope_id %d"
2169
% tcp_server.socket.getsockname())
3597
" flowinfo %d, scope_id %d",
3598
*tcp_server.socket.getsockname())
2170
3599
else: # IPv4
2171
logger.info("Now listening on address %r, port %d"
2172
% tcp_server.socket.getsockname())
2173
2174
#service.interface = tcp_server.socket.getsockname()[3]
2175
3600
logger.info("Now listening on address %r, port %d",
3601
*tcp_server.socket.getsockname())
3602
3603
# service.interface = tcp_server.socket.getsockname()[3]
3604
2176
3605
try:
2177
# From the Avahi example code
2178
try:
2179
service.activate()
2180
except dbus.exceptions.DBusException as error:
2181
logger.critical("DBusException: %s", error)
2182
cleanup()
2183
sys.exit(1)
2184
# End of Avahi example code
2185
2186
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2187
lambda *args, **kwargs:
2188
(tcp_server.handle_request
2189
(*args[2:], **kwargs) or True))
2190
3606
if zeroconf:
3607
# From the Avahi example code
3608
try:
3609
service.activate()
3610
except dbus.exceptions.DBusException as error:
3611
logger.critical("D-Bus Exception", exc_info=error)
3612
cleanup()
3613
sys.exit(1)
3614
# End of Avahi example code
3615
3616
GLib.io_add_watch(
3617
GLib.IOChannel.unix_new(tcp_server.fileno()),
3618
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
3619
lambda *args, **kwargs: (tcp_server.handle_request
3620
(*args[2:], **kwargs) or True))
3621
2191
3622
logger.debug("Starting main loop")
2192
3623
main_loop.run()
2193
3624
except AvahiError as error:
2194
logger.critical("AvahiError: %s", error)
3625
logger.critical("Avahi Error", exc_info=error)
2195
3626
cleanup()
2196
3627
sys.exit(1)
2197
3628
except KeyboardInterrupt:
2202
3633
# Must run before the D-Bus bus name gets deregistered
2203
3634
cleanup()
2204
3635
3636
3637
def should_only_run_tests():
3638
parser = argparse.ArgumentParser(add_help=False)
3639
parser.add_argument("--check", action='store_true')
3640
args, unknown_args = parser.parse_known_args()
3641
run_tests = args.check
3642
if run_tests:
3643
# Remove --check argument from sys.argv
3644
sys.argv[1:] = unknown_args
3645
return run_tests
3646
3647
# Add all tests from doctest strings
3648
def load_tests(loader, tests, none):
3649
import doctest
3650
tests.addTests(doctest.DocTestSuite())
3651
return tests
2205
3652
2206
3653
if __name__ == '__main__':
2207
main()
3654
try:
3655
if should_only_run_tests():
3656
# Call using ./mandos --check [--verbose]
3657
unittest.main()
3658
else:
3659
main()
3660
finally:
3661
logging.shutdown()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0