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- Committer: Teddy Hogeborn
- Date: 2011-11-24 20:15:24 UTC
- mto: (505.2.8 mandos-client-network-hooks)
- mto: This revision was merged to the branch mainline in revision 525.
- Revision ID: teddy@recompile.se-20111124201524-5w9ovzpuw3drdlgf
* network-hooks.d: New directory.
* network-hooks.d/bridge: New example hook.
* network-hooks.d/bridge.conf: Config file for bridge example hook.
* network-hooks.d/bridge: New example hook.
* network-hooks.d/bridge.conf: Config file for bridge example hook.
- files added:
- initramfs-tools-hook-conf
- files removed:
- bugs.xml
- debian/tests
- debian/upstream
- dracut-module
- plugin-helpers
- files modified:
- .bzrignore
added
removed
mandos
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
#
1
#!/usr/bin/python
2
# -*- mode: python; coding: utf-8 -*-
3
#
4
4
# Mandos server - give out binary blobs to connecting clients.
5
#
5
#
6
6
# This program is partly derived from an example program for an Avahi
7
7
# service publisher, downloaded from
8
8
# <http://avahi.org/wiki/PythonPublishExample>. This includes the
9
9
# methods "add", "remove", "server_state_changed",
10
10
# "entry_group_state_changed", "cleanup", and "activate" in the
11
11
# "AvahiService" class, and some lines in "main".
12
#
12
#
13
13
# Everything else is
14
# Copyright © 2008-2020 Teddy Hogeborn
15
# Copyright © 2008-2020 Björn Påhlsson
16
#
17
# This file is part of Mandos.
18
#
19
# Mandos is free software: you can redistribute it and/or modify it
20
# under the terms of the GNU General Public License as published by
14
# Copyright © 2008-2011 Teddy Hogeborn
15
# Copyright © 2008-2011 Björn Påhlsson
16
#
17
# This program is free software: you can redistribute it and/or modify
18
# it under the terms of the GNU General Public License as published by
21
19
# the Free Software Foundation, either version 3 of the License, or
22
20
# (at your option) any later version.
23
21
#
24
# Mandos is distributed in the hope that it will be useful, but
25
# WITHOUT ANY WARRANTY; without even the implied warranty of
22
# This program is distributed in the hope that it will be useful,
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
26
24
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
27
25
# GNU General Public License for more details.
28
#
26
#
29
27
# You should have received a copy of the GNU General Public License
30
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
31
#
28
# along with this program. If not, see
29
# <http://www.gnu.org/licenses/>.
30
#
32
31
# Contact the authors at <mandos@recompile.se>.
33
#
32
#
34
33
35
34
from __future__ import (division, absolute_import, print_function,
36
35
unicode_literals)
37
36
38
try:
39
from future_builtins import *
40
except ImportError:
41
pass
42
43
try:
44
import SocketServer as socketserver
45
except ImportError:
46
import socketserver
37
import SocketServer as socketserver
47
38
import socket
48
39
import argparse
49
40
import datetime
50
41
import errno
51
try:
52
import ConfigParser as configparser
53
except ImportError:
54
import configparser
42
import gnutls.crypto
43
import gnutls.connection
44
import gnutls.errors
45
import gnutls.library.functions
46
import gnutls.library.constants
47
import gnutls.library.types
48
import ConfigParser as configparser
55
49
import sys
56
50
import re
57
51
import os
66
60
import struct
67
61
import fcntl
68
62
import functools
69
try:
70
import cPickle as pickle
71
except ImportError:
72
import pickle
63
import cPickle as pickle
73
64
import multiprocessing
74
65
import types
75
import binascii
76
import tempfile
77
import itertools
78
import collections
79
import codecs
80
import unittest
81
import random
82
import shlex
83
66
84
67
import dbus
85
68
import dbus.service
86
import gi
87
from gi.repository import GLib
69
import gobject
70
import avahi
88
71
from dbus.mainloop.glib import DBusGMainLoop
89
72
import ctypes
90
73
import ctypes.util
91
74
import xml.dom.minidom
92
75
import inspect
93
76
94
if sys.version_info.major == 2:
95
__metaclass__ = type
96
str = unicode
97
98
# Add collections.abc.Callable if it does not exist
99
try:
100
collections.abc.Callable
101
except AttributeError:
102
class abc:
103
Callable = collections.Callable
104
collections.abc = abc
105
del abc
106
107
# Add shlex.quote if it does not exist
108
try:
109
shlex.quote
110
except AttributeError:
111
shlex.quote = re.escape
112
113
# Show warnings by default
114
if not sys.warnoptions:
115
import warnings
116
warnings.simplefilter("default")
117
118
# Try to find the value of SO_BINDTODEVICE:
119
try:
120
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
121
# newer, and it is also the most natural place for it:
77
try:
122
78
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
123
79
except AttributeError:
124
80
try:
125
# This is where SO_BINDTODEVICE was up to and including Python
126
# 2.6, and also 3.2:
127
81
from IN import SO_BINDTODEVICE
128
82
except ImportError:
129
# In Python 2.7 it seems to have been removed entirely.
130
# Try running the C preprocessor:
131
try:
132
cc = subprocess.Popen(["cc", "--language=c", "-E",
133
"/dev/stdin"],
134
stdin=subprocess.PIPE,
135
stdout=subprocess.PIPE)
136
stdout = cc.communicate(
137
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
138
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
139
except (OSError, ValueError, IndexError):
140
# No value found
141
SO_BINDTODEVICE = None
142
143
if sys.version_info < (3, 2):
144
configparser.Configparser = configparser.SafeConfigParser
145
146
version = "1.8.14"
147
stored_state_file = "clients.pickle"
148
149
logger = logging.getLogger()
150
logging.captureWarnings(True) # Show warnings via the logging system
151
syslogger = None
152
153
try:
154
if_nametoindex = ctypes.cdll.LoadLibrary(
155
ctypes.util.find_library("c")).if_nametoindex
156
except (OSError, AttributeError):
157
158
def if_nametoindex(interface):
159
"Get an interface index the hard way, i.e. using fcntl()"
160
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
161
with contextlib.closing(socket.socket()) as s:
162
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
163
struct.pack(b"16s16x", interface))
164
interface_index = struct.unpack("I", ifreq[16:20])[0]
165
return interface_index
166
167
168
def copy_function(func):
169
"""Make a copy of a function"""
170
if sys.version_info.major == 2:
171
return types.FunctionType(func.func_code,
172
func.func_globals,
173
func.func_name,
174
func.func_defaults,
175
func.func_closure)
176
else:
177
return types.FunctionType(func.__code__,
178
func.__globals__,
179
func.__name__,
180
func.__defaults__,
181
func.__closure__)
182
183
184
def initlogger(debug, level=logging.WARNING):
185
"""init logger and add loglevel"""
186
187
global syslogger
188
syslogger = (logging.handlers.SysLogHandler(
189
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
190
address="/dev/log"))
191
syslogger.setFormatter(logging.Formatter
192
('Mandos [%(process)d]: %(levelname)s:'
193
' %(message)s'))
194
logger.addHandler(syslogger)
195
196
if debug:
197
console = logging.StreamHandler()
198
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
199
' [%(process)d]:'
200
' %(levelname)s:'
201
' %(message)s'))
202
logger.addHandler(console)
203
logger.setLevel(level)
204
205
206
class PGPError(Exception):
207
"""Exception if encryption/decryption fails"""
208
pass
209
210
211
class PGPEngine:
212
"""A simple class for OpenPGP symmetric encryption & decryption"""
213
214
def __init__(self):
215
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
216
self.gpg = "gpg"
217
try:
218
output = subprocess.check_output(["gpgconf"])
219
for line in output.splitlines():
220
name, text, path = line.split(b":")
221
if name == b"gpg":
222
self.gpg = path
223
break
224
except OSError as e:
225
if e.errno != errno.ENOENT:
226
raise
227
self.gnupgargs = ['--batch',
228
'--homedir', self.tempdir,
229
'--force-mdc',
230
'--quiet']
231
# Only GPG version 1 has the --no-use-agent option.
232
if self.gpg == b"gpg" or self.gpg.endswith(b"/gpg"):
233
self.gnupgargs.append("--no-use-agent")
234
235
def __enter__(self):
236
return self
237
238
def __exit__(self, exc_type, exc_value, traceback):
239
self._cleanup()
240
return False
241
242
def __del__(self):
243
self._cleanup()
244
245
def _cleanup(self):
246
if self.tempdir is not None:
247
# Delete contents of tempdir
248
for root, dirs, files in os.walk(self.tempdir,
249
topdown=False):
250
for filename in files:
251
os.remove(os.path.join(root, filename))
252
for dirname in dirs:
253
os.rmdir(os.path.join(root, dirname))
254
# Remove tempdir
255
os.rmdir(self.tempdir)
256
self.tempdir = None
257
258
def password_encode(self, password):
259
# Passphrase can not be empty and can not contain newlines or
260
# NUL bytes. So we prefix it and hex encode it.
261
encoded = b"mandos" + binascii.hexlify(password)
262
if len(encoded) > 2048:
263
# GnuPG can't handle long passwords, so encode differently
264
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
265
.replace(b"\n", b"\\n")
266
.replace(b"\0", b"\\x00"))
267
return encoded
268
269
def encrypt(self, data, password):
270
passphrase = self.password_encode(password)
271
with tempfile.NamedTemporaryFile(
272
dir=self.tempdir) as passfile:
273
passfile.write(passphrase)
274
passfile.flush()
275
proc = subprocess.Popen([self.gpg, '--symmetric',
276
'--passphrase-file',
277
passfile.name]
278
+ self.gnupgargs,
279
stdin=subprocess.PIPE,
280
stdout=subprocess.PIPE,
281
stderr=subprocess.PIPE)
282
ciphertext, err = proc.communicate(input=data)
283
if proc.returncode != 0:
284
raise PGPError(err)
285
return ciphertext
286
287
def decrypt(self, data, password):
288
passphrase = self.password_encode(password)
289
with tempfile.NamedTemporaryFile(
290
dir=self.tempdir) as passfile:
291
passfile.write(passphrase)
292
passfile.flush()
293
proc = subprocess.Popen([self.gpg, '--decrypt',
294
'--passphrase-file',
295
passfile.name]
296
+ self.gnupgargs,
297
stdin=subprocess.PIPE,
298
stdout=subprocess.PIPE,
299
stderr=subprocess.PIPE)
300
decrypted_plaintext, err = proc.communicate(input=data)
301
if proc.returncode != 0:
302
raise PGPError(err)
303
return decrypted_plaintext
304
305
306
# Pretend that we have an Avahi module
307
class avahi:
308
"""This isn't so much a class as it is a module-like namespace."""
309
IF_UNSPEC = -1 # avahi-common/address.h
310
PROTO_UNSPEC = -1 # avahi-common/address.h
311
PROTO_INET = 0 # avahi-common/address.h
312
PROTO_INET6 = 1 # avahi-common/address.h
313
DBUS_NAME = "org.freedesktop.Avahi"
314
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
315
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
316
DBUS_PATH_SERVER = "/"
317
318
@staticmethod
319
def string_array_to_txt_array(t):
320
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
321
for s in t), signature="ay")
322
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
323
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
324
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
325
SERVER_INVALID = 0 # avahi-common/defs.h
326
SERVER_REGISTERING = 1 # avahi-common/defs.h
327
SERVER_RUNNING = 2 # avahi-common/defs.h
328
SERVER_COLLISION = 3 # avahi-common/defs.h
329
SERVER_FAILURE = 4 # avahi-common/defs.h
330
83
SO_BINDTODEVICE = None
84
85
86
version = "1.4.1"
87
88
#logger = logging.getLogger('mandos')
89
logger = logging.Logger('mandos')
90
syslogger = (logging.handlers.SysLogHandler
91
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
92
address = str("/dev/log")))
93
syslogger.setFormatter(logging.Formatter
94
('Mandos [%(process)d]: %(levelname)s:'
95
' %(message)s'))
96
logger.addHandler(syslogger)
97
98
console = logging.StreamHandler()
99
console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'
100
' %(levelname)s:'
101
' %(message)s'))
102
logger.addHandler(console)
331
103
332
104
class AvahiError(Exception):
333
105
def __init__(self, value, *args, **kwargs):
334
106
self.value = value
335
return super(AvahiError, self).__init__(value, *args,
336
**kwargs)
337
107
super(AvahiError, self).__init__(value, *args, **kwargs)
108
def __unicode__(self):
109
return unicode(repr(self.value))
338
110
339
111
class AvahiServiceError(AvahiError):
340
112
pass
341
113
342
343
114
class AvahiGroupError(AvahiError):
344
115
pass
345
116
346
117
347
class AvahiService:
118
class AvahiService(object):
348
119
"""An Avahi (Zeroconf) service.
349
120
350
121
Attributes:
351
122
interface: integer; avahi.IF_UNSPEC or an interface index.
352
123
Used to optionally bind to the specified interface.
353
124
name: string; Example: 'Mandos'
354
125
type: string; Example: '_mandos._tcp'.
355
See <https://www.iana.org/assignments/service-names-port-numbers>
126
See <http://www.dns-sd.org/ServiceTypes.html>
356
127
port: integer; what port to announce
357
128
TXT: list of strings; TXT record for the service
358
129
domain: string; Domain to publish on, default to .local if empty.
364
135
server: D-Bus Server
365
136
bus: dbus.SystemBus()
366
137
"""
367
368
def __init__(self,
369
interface=avahi.IF_UNSPEC,
370
name=None,
371
servicetype=None,
372
port=None,
373
TXT=None,
374
domain="",
375
host="",
376
max_renames=32768,
377
protocol=avahi.PROTO_UNSPEC,
378
bus=None):
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):
379
142
self.interface = interface
380
143
self.name = name
381
144
self.type = servicetype
390
153
self.server = None
391
154
self.bus = bus
392
155
self.entry_group_state_changed_match = None
393
394
def rename(self, remove=True):
156
def rename(self):
395
157
"""Derived from the Avahi example code"""
396
158
if self.rename_count >= self.max_renames:
397
159
logger.critical("No suitable Zeroconf service name found"
398
160
" after %i retries, exiting.",
399
161
self.rename_count)
400
162
raise AvahiServiceError("Too many renames")
401
self.name = str(
402
self.server.GetAlternativeServiceName(self.name))
403
self.rename_count += 1
163
self.name = unicode(self.server
164
.GetAlternativeServiceName(self.name))
404
165
logger.info("Changing Zeroconf service name to %r ...",
405
166
self.name)
406
if remove:
407
self.remove()
167
syslogger.setFormatter(logging.Formatter
168
('Mandos (%s) [%%(process)d]:'
169
' %%(levelname)s: %%(message)s'
170
% self.name))
171
self.remove()
408
172
try:
409
173
self.add()
410
174
except dbus.exceptions.DBusException as error:
411
if (error.get_dbus_name()
412
== "org.freedesktop.Avahi.CollisionError"):
413
logger.info("Local Zeroconf service name collision.")
414
return self.rename(remove=False)
415
else:
416
logger.critical("D-Bus Exception", exc_info=error)
417
self.cleanup()
418
os._exit(1)
419
175
logger.critical("DBusException: %s", error)
176
self.cleanup()
177
os._exit(1)
178
self.rename_count += 1
420
179
def remove(self):
421
180
"""Derived from the Avahi example code"""
422
181
if self.entry_group_state_changed_match is not None:
424
183
self.entry_group_state_changed_match = None
425
184
if self.group is not None:
426
185
self.group.Reset()
427
428
186
def add(self):
429
187
"""Derived from the Avahi example code"""
430
188
self.remove()
435
193
avahi.DBUS_INTERFACE_ENTRY_GROUP)
436
194
self.entry_group_state_changed_match = (
437
195
self.group.connect_to_signal(
438
'StateChanged', self.entry_group_state_changed))
196
'StateChanged', self .entry_group_state_changed))
439
197
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
440
198
self.name, self.type)
441
199
self.group.AddService(
447
205
dbus.UInt16(self.port),
448
206
avahi.string_array_to_txt_array(self.TXT))
449
207
self.group.Commit()
450
451
208
def entry_group_state_changed(self, state, error):
452
209
"""Derived from the Avahi example code"""
453
210
logger.debug("Avahi entry group state change: %i", state)
454
211
455
212
if state == avahi.ENTRY_GROUP_ESTABLISHED:
456
213
logger.debug("Zeroconf service established.")
457
214
elif state == avahi.ENTRY_GROUP_COLLISION:
459
216
self.rename()
460
217
elif state == avahi.ENTRY_GROUP_FAILURE:
461
218
logger.critical("Avahi: Error in group state changed %s",
462
str(error))
463
raise AvahiGroupError("State changed: {!s}".format(error))
464
219
unicode(error))
220
raise AvahiGroupError("State changed: %s"
221
% unicode(error))
465
222
def cleanup(self):
466
223
"""Derived from the Avahi example code"""
467
224
if self.group is not None:
468
225
try:
469
226
self.group.Free()
470
227
except (dbus.exceptions.UnknownMethodException,
471
dbus.exceptions.DBusException):
228
dbus.exceptions.DBusException) as e:
472
229
pass
473
230
self.group = None
474
231
self.remove()
475
476
232
def server_state_changed(self, state, error=None):
477
233
"""Derived from the Avahi example code"""
478
234
logger.debug("Avahi server state change: %i", state)
479
bad_states = {
480
avahi.SERVER_INVALID: "Zeroconf server invalid",
481
avahi.SERVER_REGISTERING: None,
482
avahi.SERVER_COLLISION: "Zeroconf server name collision",
483
avahi.SERVER_FAILURE: "Zeroconf server failure",
484
}
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" }
485
242
if state in bad_states:
486
243
if bad_states[state] is not None:
487
244
if error is None:
490
247
logger.error(bad_states[state] + ": %r", error)
491
248
self.cleanup()
492
249
elif state == avahi.SERVER_RUNNING:
493
try:
494
self.add()
495
except dbus.exceptions.DBusException as error:
496
if (error.get_dbus_name()
497
== "org.freedesktop.Avahi.CollisionError"):
498
logger.info("Local Zeroconf service name"
499
" collision.")
500
return self.rename(remove=False)
501
else:
502
logger.critical("D-Bus Exception", exc_info=error)
503
self.cleanup()
504
os._exit(1)
250
self.add()
505
251
else:
506
252
if error is None:
507
253
logger.debug("Unknown state: %r", state)
508
254
else:
509
255
logger.debug("Unknown state: %r: %r", state, error)
510
511
256
def activate(self):
512
257
"""Derived from the Avahi example code"""
513
258
if self.server is None:
517
262
follow_name_owner_changes=True),
518
263
avahi.DBUS_INTERFACE_SERVER)
519
264
self.server.connect_to_signal("StateChanged",
520
self.server_state_changed)
265
self.server_state_changed)
521
266
self.server_state_changed(self.server.GetState())
522
267
523
268
524
class AvahiServiceToSyslog(AvahiService):
525
def rename(self, *args, **kwargs):
526
"""Add the new name to the syslog messages"""
527
ret = super(AvahiServiceToSyslog, self).rename(*args,
528
**kwargs)
529
syslogger.setFormatter(logging.Formatter(
530
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
531
.format(self.name)))
532
return ret
533
534
535
# Pretend that we have a GnuTLS module
536
class gnutls:
537
"""This isn't so much a class as it is a module-like namespace."""
538
539
library = ctypes.util.find_library("gnutls")
540
if library is None:
541
library = ctypes.util.find_library("gnutls-deb0")
542
_library = ctypes.cdll.LoadLibrary(library)
543
del library
544
545
# Unless otherwise indicated, the constants and types below are
546
# all from the gnutls/gnutls.h C header file.
547
548
# Constants
549
E_SUCCESS = 0
550
E_INTERRUPTED = -52
551
E_AGAIN = -28
552
CRT_OPENPGP = 2
553
CRT_RAWPK = 3
554
CLIENT = 2
555
SHUT_RDWR = 0
556
CRD_CERTIFICATE = 1
557
E_NO_CERTIFICATE_FOUND = -49
558
X509_FMT_DER = 0
559
NO_TICKETS = 1<<10
560
ENABLE_RAWPK = 1<<18
561
CTYPE_PEERS = 3
562
KEYID_USE_SHA256 = 1 # gnutls/x509.h
563
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
564
565
# Types
566
class session_int(ctypes.Structure):
567
_fields_ = []
568
session_t = ctypes.POINTER(session_int)
569
570
class certificate_credentials_st(ctypes.Structure):
571
_fields_ = []
572
certificate_credentials_t = ctypes.POINTER(
573
certificate_credentials_st)
574
certificate_type_t = ctypes.c_int
575
576
class datum_t(ctypes.Structure):
577
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
578
('size', ctypes.c_uint)]
579
580
class openpgp_crt_int(ctypes.Structure):
581
_fields_ = []
582
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
583
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
584
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
585
credentials_type_t = ctypes.c_int
586
transport_ptr_t = ctypes.c_void_p
587
close_request_t = ctypes.c_int
588
589
# Exceptions
590
class Error(Exception):
591
def __init__(self, message=None, code=None, args=()):
592
# Default usage is by a message string, but if a return
593
# code is passed, convert it to a string with
594
# gnutls.strerror()
595
self.code = code
596
if message is None and code is not None:
597
message = gnutls.strerror(code)
598
return super(gnutls.Error, self).__init__(
599
message, *args)
600
601
class CertificateSecurityError(Error):
602
pass
603
604
# Classes
605
class Credentials:
606
def __init__(self):
607
self._c_object = gnutls.certificate_credentials_t()
608
gnutls.certificate_allocate_credentials(
609
ctypes.byref(self._c_object))
610
self.type = gnutls.CRD_CERTIFICATE
611
612
def __del__(self):
613
gnutls.certificate_free_credentials(self._c_object)
614
615
class ClientSession:
616
def __init__(self, socket, credentials=None):
617
self._c_object = gnutls.session_t()
618
gnutls_flags = gnutls.CLIENT
619
if gnutls.check_version(b"3.5.6"):
620
gnutls_flags |= gnutls.NO_TICKETS
621
if gnutls.has_rawpk:
622
gnutls_flags |= gnutls.ENABLE_RAWPK
623
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
624
del gnutls_flags
625
gnutls.set_default_priority(self._c_object)
626
gnutls.transport_set_ptr(self._c_object, socket.fileno())
627
gnutls.handshake_set_private_extensions(self._c_object,
628
True)
629
self.socket = socket
630
if credentials is None:
631
credentials = gnutls.Credentials()
632
gnutls.credentials_set(self._c_object, credentials.type,
633
ctypes.cast(credentials._c_object,
634
ctypes.c_void_p))
635
self.credentials = credentials
636
637
def __del__(self):
638
gnutls.deinit(self._c_object)
639
640
def handshake(self):
641
return gnutls.handshake(self._c_object)
642
643
def send(self, data):
644
data = bytes(data)
645
data_len = len(data)
646
while data_len > 0:
647
data_len -= gnutls.record_send(self._c_object,
648
data[-data_len:],
649
data_len)
650
651
def bye(self):
652
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
653
654
# Error handling functions
655
def _error_code(result):
656
"""A function to raise exceptions on errors, suitable
657
for the 'restype' attribute on ctypes functions"""
658
if result >= 0:
659
return result
660
if result == gnutls.E_NO_CERTIFICATE_FOUND:
661
raise gnutls.CertificateSecurityError(code=result)
662
raise gnutls.Error(code=result)
663
664
def _retry_on_error(result, func, arguments):
665
"""A function to retry on some errors, suitable
666
for the 'errcheck' attribute on ctypes functions"""
667
while result < 0:
668
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
669
return _error_code(result)
670
result = func(*arguments)
671
return result
672
673
# Unless otherwise indicated, the function declarations below are
674
# all from the gnutls/gnutls.h C header file.
675
676
# Functions
677
priority_set_direct = _library.gnutls_priority_set_direct
678
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
679
ctypes.POINTER(ctypes.c_char_p)]
680
priority_set_direct.restype = _error_code
681
682
init = _library.gnutls_init
683
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
684
init.restype = _error_code
685
686
set_default_priority = _library.gnutls_set_default_priority
687
set_default_priority.argtypes = [session_t]
688
set_default_priority.restype = _error_code
689
690
record_send = _library.gnutls_record_send
691
record_send.argtypes = [session_t, ctypes.c_void_p,
692
ctypes.c_size_t]
693
record_send.restype = ctypes.c_ssize_t
694
record_send.errcheck = _retry_on_error
695
696
certificate_allocate_credentials = (
697
_library.gnutls_certificate_allocate_credentials)
698
certificate_allocate_credentials.argtypes = [
699
ctypes.POINTER(certificate_credentials_t)]
700
certificate_allocate_credentials.restype = _error_code
701
702
certificate_free_credentials = (
703
_library.gnutls_certificate_free_credentials)
704
certificate_free_credentials.argtypes = [
705
certificate_credentials_t]
706
certificate_free_credentials.restype = None
707
708
handshake_set_private_extensions = (
709
_library.gnutls_handshake_set_private_extensions)
710
handshake_set_private_extensions.argtypes = [session_t,
711
ctypes.c_int]
712
handshake_set_private_extensions.restype = None
713
714
credentials_set = _library.gnutls_credentials_set
715
credentials_set.argtypes = [session_t, credentials_type_t,
716
ctypes.c_void_p]
717
credentials_set.restype = _error_code
718
719
strerror = _library.gnutls_strerror
720
strerror.argtypes = [ctypes.c_int]
721
strerror.restype = ctypes.c_char_p
722
723
certificate_type_get = _library.gnutls_certificate_type_get
724
certificate_type_get.argtypes = [session_t]
725
certificate_type_get.restype = _error_code
726
727
certificate_get_peers = _library.gnutls_certificate_get_peers
728
certificate_get_peers.argtypes = [session_t,
729
ctypes.POINTER(ctypes.c_uint)]
730
certificate_get_peers.restype = ctypes.POINTER(datum_t)
731
732
global_set_log_level = _library.gnutls_global_set_log_level
733
global_set_log_level.argtypes = [ctypes.c_int]
734
global_set_log_level.restype = None
735
736
global_set_log_function = _library.gnutls_global_set_log_function
737
global_set_log_function.argtypes = [log_func]
738
global_set_log_function.restype = None
739
740
deinit = _library.gnutls_deinit
741
deinit.argtypes = [session_t]
742
deinit.restype = None
743
744
handshake = _library.gnutls_handshake
745
handshake.argtypes = [session_t]
746
handshake.restype = _error_code
747
handshake.errcheck = _retry_on_error
748
749
transport_set_ptr = _library.gnutls_transport_set_ptr
750
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
751
transport_set_ptr.restype = None
752
753
bye = _library.gnutls_bye
754
bye.argtypes = [session_t, close_request_t]
755
bye.restype = _error_code
756
bye.errcheck = _retry_on_error
757
758
check_version = _library.gnutls_check_version
759
check_version.argtypes = [ctypes.c_char_p]
760
check_version.restype = ctypes.c_char_p
761
762
_need_version = b"3.3.0"
763
if check_version(_need_version) is None:
764
raise self.Error("Needs GnuTLS {} or later"
765
.format(_need_version))
766
767
_tls_rawpk_version = b"3.6.6"
768
has_rawpk = bool(check_version(_tls_rawpk_version))
769
770
if has_rawpk:
771
# Types
772
class pubkey_st(ctypes.Structure):
773
_fields = []
774
pubkey_t = ctypes.POINTER(pubkey_st)
775
776
x509_crt_fmt_t = ctypes.c_int
777
778
# All the function declarations below are from
779
# gnutls/abstract.h
780
pubkey_init = _library.gnutls_pubkey_init
781
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
782
pubkey_init.restype = _error_code
783
784
pubkey_import = _library.gnutls_pubkey_import
785
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
786
x509_crt_fmt_t]
787
pubkey_import.restype = _error_code
788
789
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
790
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
791
ctypes.POINTER(ctypes.c_ubyte),
792
ctypes.POINTER(ctypes.c_size_t)]
793
pubkey_get_key_id.restype = _error_code
794
795
pubkey_deinit = _library.gnutls_pubkey_deinit
796
pubkey_deinit.argtypes = [pubkey_t]
797
pubkey_deinit.restype = None
798
else:
799
# All the function declarations below are from
800
# gnutls/openpgp.h
801
802
openpgp_crt_init = _library.gnutls_openpgp_crt_init
803
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
804
openpgp_crt_init.restype = _error_code
805
806
openpgp_crt_import = _library.gnutls_openpgp_crt_import
807
openpgp_crt_import.argtypes = [openpgp_crt_t,
808
ctypes.POINTER(datum_t),
809
openpgp_crt_fmt_t]
810
openpgp_crt_import.restype = _error_code
811
812
openpgp_crt_verify_self = \
813
_library.gnutls_openpgp_crt_verify_self
814
openpgp_crt_verify_self.argtypes = [
815
openpgp_crt_t,
816
ctypes.c_uint,
817
ctypes.POINTER(ctypes.c_uint),
818
]
819
openpgp_crt_verify_self.restype = _error_code
820
821
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
822
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
823
openpgp_crt_deinit.restype = None
824
825
openpgp_crt_get_fingerprint = (
826
_library.gnutls_openpgp_crt_get_fingerprint)
827
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
828
ctypes.c_void_p,
829
ctypes.POINTER(
830
ctypes.c_size_t)]
831
openpgp_crt_get_fingerprint.restype = _error_code
832
833
if check_version(b"3.6.4"):
834
certificate_type_get2 = _library.gnutls_certificate_type_get2
835
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
836
certificate_type_get2.restype = _error_code
837
838
# Remove non-public functions
839
del _error_code, _retry_on_error
840
841
842
def call_pipe(connection, # : multiprocessing.Connection
843
func, *args, **kwargs):
844
"""This function is meant to be called by multiprocessing.Process
845
846
This function runs func(*args, **kwargs), and writes the resulting
847
return value on the provided multiprocessing.Connection.
848
"""
849
connection.send(func(*args, **kwargs))
850
connection.close()
851
852
853
class Client:
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):
854
276
"""A representation of a client host served by this server.
855
277
856
278
Attributes:
857
approved: bool(); 'None' if not yet approved/disapproved
279
_approved: bool(); 'None' if not yet approved/disapproved
858
280
approval_delay: datetime.timedelta(); Time to wait for approval
859
281
approval_duration: datetime.timedelta(); Duration of one approval
860
checker: multiprocessing.Process(); a running checker process used
861
to see if the client lives. 'None' if no process is
862
running.
863
checker_callback_tag: a GLib event source tag, or None
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
864
286
checker_command: string; External command which is run to check
865
287
if client lives. %() expansions are done at
866
288
runtime with vars(self) as dict, so that for
867
289
instance %(name)s can be used in the command.
868
checker_initiator_tag: a GLib event source tag, or None
290
checker_initiator_tag: a gobject event source tag, or None
869
291
created: datetime.datetime(); (UTC) object creation
870
client_structure: Object describing what attributes a client has
871
and is used for storing the client at exit
872
292
current_checker_command: string; current running checker_command
873
disable_initiator_tag: a GLib event source tag, or None
293
disable_hook: If set, called by disable() as disable_hook(self)
294
disable_initiator_tag: a gobject event source tag, or None
874
295
enabled: bool()
875
296
fingerprint: string (40 or 32 hexadecimal digits); used to
876
uniquely identify an OpenPGP client
877
key_id: string (64 hexadecimal digits); used to uniquely identify
878
a client using raw public keys
297
uniquely identify the client
879
298
host: string; available for use by the checker command
880
299
interval: datetime.timedelta(); How often to start a new checker
881
300
last_approval_request: datetime.datetime(); (UTC) or None
882
301
last_checked_ok: datetime.datetime(); (UTC) or None
883
last_checker_status: integer between 0 and 255 reflecting exit
884
status of last checker. -1 reflects crashed
885
checker, -2 means no checker completed yet.
886
last_checker_signal: The signal which killed the last checker, if
887
last_checker_status is -1
888
last_enabled: datetime.datetime(); (UTC) or None
302
last_enabled: datetime.datetime(); (UTC)
889
303
name: string; from the config file, used in log messages and
890
304
D-Bus identifiers
891
305
secret: bytestring; sent verbatim (over TLS) to client
892
306
timeout: datetime.timedelta(); How long from last_checked_ok
893
307
until this client is disabled
894
extended_timeout: extra long timeout when secret has been sent
308
extended_timeout: extra long timeout when password has been sent
895
309
runtime_expansions: Allowed attributes for runtime expansion.
896
310
expires: datetime.datetime(); time (UTC) when a client will be
897
311
disabled, or None
898
server_settings: The server_settings dict from main()
899
312
"""
900
313
901
314
runtime_expansions = ("approval_delay", "approval_duration",
902
"created", "enabled", "expires", "key_id",
903
"fingerprint", "host", "interval",
904
"last_approval_request", "last_checked_ok",
315
"created", "enabled", "fingerprint",
316
"host", "interval", "last_checked_ok",
905
317
"last_enabled", "name", "timeout")
906
client_defaults = {
907
"timeout": "PT5M",
908
"extended_timeout": "PT15M",
909
"interval": "PT2M",
910
"checker": "fping -q -- %%(host)s",
911
"host": "",
912
"approval_delay": "PT0S",
913
"approval_duration": "PT1S",
914
"approved_by_default": "True",
915
"enabled": "True",
916
}
917
918
@staticmethod
919
def config_parser(config):
920
"""Construct a new dict of client settings of this form:
921
{ client_name: {setting_name: value, ...}, ...}
922
with exceptions for any special settings as defined above.
923
NOTE: Must be a pure function. Must return the same result
924
value given the same arguments.
925
"""
926
settings = {}
927
for client_name in config.sections():
928
section = dict(config.items(client_name))
929
client = settings[client_name] = {}
930
931
client["host"] = section["host"]
932
# Reformat values from string types to Python types
933
client["approved_by_default"] = config.getboolean(
934
client_name, "approved_by_default")
935
client["enabled"] = config.getboolean(client_name,
936
"enabled")
937
938
# Uppercase and remove spaces from key_id and fingerprint
939
# for later comparison purposes with return value from the
940
# key_id() and fingerprint() functions
941
client["key_id"] = (section.get("key_id", "").upper()
942
.replace(" ", ""))
943
client["fingerprint"] = (section["fingerprint"].upper()
944
.replace(" ", ""))
945
if "secret" in section:
946
client["secret"] = codecs.decode(section["secret"]
947
.encode("utf-8"),
948
"base64")
949
elif "secfile" in section:
950
with open(os.path.expanduser(os.path.expandvars
951
(section["secfile"])),
952
"rb") as secfile:
953
client["secret"] = secfile.read()
954
else:
955
raise TypeError("No secret or secfile for section {}"
956
.format(section))
957
client["timeout"] = string_to_delta(section["timeout"])
958
client["extended_timeout"] = string_to_delta(
959
section["extended_timeout"])
960
client["interval"] = string_to_delta(section["interval"])
961
client["approval_delay"] = string_to_delta(
962
section["approval_delay"])
963
client["approval_duration"] = string_to_delta(
964
section["approval_duration"])
965
client["checker_command"] = section["checker"]
966
client["last_approval_request"] = None
967
client["last_checked_ok"] = None
968
client["last_checker_status"] = -2
969
970
return settings
971
972
def __init__(self, settings, name=None, server_settings=None):
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."""
973
338
self.name = name
974
if server_settings is None:
975
server_settings = {}
976
self.server_settings = server_settings
977
# adding all client settings
978
for setting, value in settings.items():
979
setattr(self, setting, value)
980
981
if self.enabled:
982
if not hasattr(self, "last_enabled"):
983
self.last_enabled = datetime.datetime.utcnow()
984
if not hasattr(self, "expires"):
985
self.expires = (datetime.datetime.utcnow()
986
+ self.timeout)
987
else:
988
self.last_enabled = None
989
self.expires = None
990
339
if config is None:
340
config = {}
991
341
logger.debug("Creating client %r", self.name)
992
logger.debug(" Key ID: %s", self.key_id)
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(" ", ""))
993
347
logger.debug(" Fingerprint: %s", self.fingerprint)
994
self.created = settings.get("created",
995
datetime.datetime.utcnow())
996
997
# attributes specific for this server instance
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
998
369
self.checker = None
999
370
self.checker_initiator_tag = None
1000
371
self.disable_initiator_tag = None
372
self.expires = None
1001
373
self.checker_callback_tag = None
374
self.checker_command = config["checker"]
1002
375
self.current_checker_command = None
1003
self.approved = None
376
self.last_connect = None
377
self._approved = None
378
self.approved_by_default = config.get("approved_by_default",
379
True)
1004
380
self.approvals_pending = 0
1005
self.changedstate = multiprocessing_manager.Condition(
1006
multiprocessing_manager.Lock())
1007
self.client_structure = [attr
1008
for attr in self.__dict__.keys()
1009
if not attr.startswith("_")]
1010
self.client_structure.append("client_structure")
1011
1012
for name, t in inspect.getmembers(
1013
type(self), lambda obj: isinstance(obj, property)):
1014
if not name.startswith("_"):
1015
self.client_structure.append(name)
1016
1017
# Send notice to process children that client state has changed
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
1018
389
def send_changedstate(self):
1019
with self.changedstate:
1020
self.changedstate.notify_all()
1021
390
self.changedstate.acquire()
391
self.changedstate.notify_all()
392
self.changedstate.release()
393
1022
394
def enable(self):
1023
395
"""Start this client's checker and timeout hooks"""
1024
396
if getattr(self, "enabled", False):
1025
397
# Already enabled
1026
398
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
1027
406
self.expires = datetime.datetime.utcnow() + self.timeout
407
self.disable_initiator_tag = (gobject.timeout_add
408
(self.timeout_milliseconds(),
409
self.disable))
1028
410
self.enabled = True
1029
411
self.last_enabled = datetime.datetime.utcnow()
1030
self.init_checker()
1031
self.send_changedstate()
1032
412
# Also start a new checker *right now*.
413
self.start_checker()
414
1033
415
def disable(self, quiet=True):
1034
416
"""Disable this client."""
1035
417
if not getattr(self, "enabled", False):
1036
418
return False
1037
419
if not quiet:
420
self.send_changedstate()
421
if not quiet:
1038
422
logger.info("Disabling client %s", self.name)
1039
if getattr(self, "disable_initiator_tag", None) is not None:
1040
GLib.source_remove(self.disable_initiator_tag)
423
if getattr(self, "disable_initiator_tag", False):
424
gobject.source_remove(self.disable_initiator_tag)
1041
425
self.disable_initiator_tag = None
1042
426
self.expires = None
1043
if getattr(self, "checker_initiator_tag", None) is not None:
1044
GLib.source_remove(self.checker_initiator_tag)
427
if getattr(self, "checker_initiator_tag", False):
428
gobject.source_remove(self.checker_initiator_tag)
1045
429
self.checker_initiator_tag = None
1046
430
self.stop_checker()
431
if self.disable_hook:
432
self.disable_hook(self)
1047
433
self.enabled = False
1048
if not quiet:
1049
self.send_changedstate()
1050
# Do not run this again if called by a GLib.timeout_add
434
# Do not run this again if called by a gobject.timeout_add
1051
435
return False
1052
436
1053
437
def __del__(self):
438
self.disable_hook = None
1054
439
self.disable()
1055
1056
def init_checker(self):
1057
# Schedule a new checker to be started an 'interval' from now,
1058
# and every interval from then on.
1059
if self.checker_initiator_tag is not None:
1060
GLib.source_remove(self.checker_initiator_tag)
1061
self.checker_initiator_tag = GLib.timeout_add(
1062
random.randrange(int(self.interval.total_seconds() * 1000
1063
+ 1)),
1064
self.start_checker)
1065
# Schedule a disable() when 'timeout' has passed
1066
if self.disable_initiator_tag is not None:
1067
GLib.source_remove(self.disable_initiator_tag)
1068
self.disable_initiator_tag = GLib.timeout_add(
1069
int(self.timeout.total_seconds() * 1000), self.disable)
1070
# Also start a new checker *right now*.
1071
self.start_checker()
1072
1073
def checker_callback(self, source, condition, connection,
1074
command):
440
441
def checker_callback(self, pid, condition, command):
1075
442
"""The checker has completed, so take appropriate actions."""
1076
# Read return code from connection (see call_pipe)
1077
returncode = connection.recv()
1078
connection.close()
1079
if self.checker is not None:
1080
self.checker.join()
1081
443
self.checker_callback_tag = None
1082
444
self.checker = None
1083
1084
if returncode >= 0:
1085
self.last_checker_status = returncode
1086
self.last_checker_signal = None
1087
if self.last_checker_status == 0:
445
if os.WIFEXITED(condition):
446
exitstatus = os.WEXITSTATUS(condition)
447
if exitstatus == 0:
1088
448
logger.info("Checker for %(name)s succeeded",
1089
449
vars(self))
1090
450
self.checked_ok()
1091
451
else:
1092
logger.info("Checker for %(name)s failed", vars(self))
452
logger.info("Checker for %(name)s failed",
453
vars(self))
1093
454
else:
1094
self.last_checker_status = -1
1095
self.last_checker_signal = -returncode
1096
455
logger.warning("Checker for %(name)s crashed?",
1097
456
vars(self))
1098
return False
1099
1100
def checked_ok(self):
1101
"""Assert that the client has been seen, alive and well."""
1102
self.last_checked_ok = datetime.datetime.utcnow()
1103
self.last_checker_status = 0
1104
self.last_checker_signal = None
1105
self.bump_timeout()
1106
1107
def bump_timeout(self, timeout=None):
1108
"""Bump up the timeout for this client."""
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
"""
1109
464
if timeout is None:
1110
465
timeout = self.timeout
466
self.last_checked_ok = datetime.datetime.utcnow()
1111
467
if self.disable_initiator_tag is not None:
1112
GLib.source_remove(self.disable_initiator_tag)
1113
self.disable_initiator_tag = None
468
gobject.source_remove(self.disable_initiator_tag)
1114
469
if getattr(self, "enabled", False):
1115
self.disable_initiator_tag = GLib.timeout_add(
1116
int(timeout.total_seconds() * 1000), self.disable)
470
self.disable_initiator_tag = (gobject.timeout_add
471
(_timedelta_to_milliseconds
472
(timeout), self.disable))
1117
473
self.expires = datetime.datetime.utcnow() + timeout
1118
474
1119
475
def need_approval(self):
1120
476
self.last_approval_request = datetime.datetime.utcnow()
1121
477
1122
478
def start_checker(self):
1123
479
"""Start a new checker subprocess if one is not running.
1124
480
1125
481
If a checker already exists, leave it running and do
1126
482
nothing."""
1127
483
# The reason for not killing a running checker is that if we
1128
# did that, and if a checker (for some reason) started running
1129
# slowly and taking more than 'interval' time, then the client
1130
# would inevitably timeout, since no checker would get a
1131
# chance to run to completion. If we instead leave running
484
# did that, then if a checker (for some reason) started
485
# running slowly and taking more than 'interval' time, the
486
# client would inevitably timeout, since no checker would get
487
# a chance to run to completion. If we instead leave running
1132
488
# checkers alone, the checker would have to take more time
1133
489
# than 'timeout' for the client to be disabled, which is as it
1134
490
# should be.
1135
1136
if self.checker is not None and not self.checker.is_alive():
1137
logger.warning("Checker was not alive; joining")
1138
self.checker.join()
1139
self.checker = None
491
492
# If a checker exists, make sure it is not a zombie
493
try:
494
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
495
except (AttributeError, OSError) as error:
496
if (isinstance(error, OSError)
497
and error.errno != errno.ECHILD):
498
raise error
499
else:
500
if pid:
501
logger.warning("Checker was a zombie")
502
gobject.source_remove(self.checker_callback_tag)
503
self.checker_callback(pid, status,
504
self.current_checker_command)
1140
505
# Start a new checker if needed
1141
506
if self.checker is None:
1142
# Escape attributes for the shell
1143
escaped_attrs = {
1144
attr: shlex.quote(str(getattr(self, attr)))
1145
for attr in self.runtime_expansions}
1146
507
try:
1147
command = self.checker_command % escaped_attrs
1148
except TypeError as error:
1149
logger.error('Could not format string "%s"',
1150
self.checker_command,
1151
exc_info=error)
1152
return True # Try again later
508
# In case checker_command has exactly one % operator
509
command = self.checker_command % self.host
510
except TypeError:
511
# Escape attributes for the shell
512
escaped_attrs = dict(
513
(attr,
514
re.escape(unicode(str(getattr(self, attr, "")),
515
errors=
516
'replace')))
517
for attr in
518
self.runtime_expansions)
519
520
try:
521
command = self.checker_command % escaped_attrs
522
except TypeError as error:
523
logger.error('Could not format string "%s":'
524
' %s', self.checker_command, error)
525
return True # Try again later
1153
526
self.current_checker_command = command
1154
logger.info("Starting checker %r for %s", command,
1155
self.name)
1156
# We don't need to redirect stdout and stderr, since
1157
# in normal mode, that is already done by daemon(),
1158
# and in debug mode we don't want to. (Stdin is
1159
# always replaced by /dev/null.)
1160
# The exception is when not debugging but nevertheless
1161
# running in the foreground; use the previously
1162
# created wnull.
1163
popen_args = {"close_fds": True,
1164
"shell": True,
1165
"cwd": "/"}
1166
if (not self.server_settings["debug"]
1167
and self.server_settings["foreground"]):
1168
popen_args.update({"stdout": wnull,
1169
"stderr": wnull})
1170
pipe = multiprocessing.Pipe(duplex=False)
1171
self.checker = multiprocessing.Process(
1172
target=call_pipe,
1173
args=(pipe[1], subprocess.call, command),
1174
kwargs=popen_args)
1175
self.checker.start()
1176
self.checker_callback_tag = GLib.io_add_watch(
1177
GLib.IOChannel.unix_new(pipe[0].fileno()),
1178
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
1179
self.checker_callback, pipe[0], command)
1180
# Re-run this periodically if run by GLib.timeout_add
527
try:
528
logger.info("Starting checker %r for %s",
529
command, self.name)
530
# We don't need to redirect stdout and stderr, since
531
# in normal mode, that is already done by daemon(),
532
# and in debug mode we don't want to. (Stdin is
533
# always replaced by /dev/null.)
534
self.checker = subprocess.Popen(command,
535
close_fds=True,
536
shell=True, cwd="/")
537
self.checker_callback_tag = (gobject.child_watch_add
538
(self.checker.pid,
539
self.checker_callback,
540
data=command))
541
# The checker may have completed before the gobject
542
# watch was added. Check for this.
543
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
544
if pid:
545
gobject.source_remove(self.checker_callback_tag)
546
self.checker_callback(pid, status, command)
547
except OSError as error:
548
logger.error("Failed to start subprocess: %s",
549
error)
550
# Re-run this periodically if run by gobject.timeout_add
1181
551
return True
1182
552
1183
553
def stop_checker(self):
1184
554
"""Force the checker process, if any, to stop."""
1185
555
if self.checker_callback_tag:
1186
GLib.source_remove(self.checker_callback_tag)
556
gobject.source_remove(self.checker_callback_tag)
1187
557
self.checker_callback_tag = None
1188
558
if getattr(self, "checker", None) is None:
1189
559
return
1190
560
logger.debug("Stopping checker for %(name)s", vars(self))
1191
self.checker.terminate()
561
try:
562
os.kill(self.checker.pid, signal.SIGTERM)
563
#time.sleep(0.5)
564
#if self.checker.poll() is None:
565
# os.kill(self.checker.pid, signal.SIGKILL)
566
except OSError as error:
567
if error.errno != errno.ESRCH: # No such process
568
raise
1192
569
self.checker = None
1193
570
1194
571
1195
def dbus_service_property(dbus_interface,
1196
signature="v",
1197
access="readwrite",
1198
byte_arrays=False):
572
def dbus_service_property(dbus_interface, signature="v",
573
access="readwrite", byte_arrays=False):
1199
574
"""Decorators for marking methods of a DBusObjectWithProperties to
1200
575
become properties on the D-Bus.
1201
576
1202
577
The decorated method will be called with no arguments by "Get"
1203
578
and with one argument by "Set".
1204
579
1205
580
The parameters, where they are supported, are the same as
1206
581
dbus.service.method, except there is only "signature", since the
1207
582
type from Get() and the type sent to Set() is the same.
1210
585
# "Set" method, so we fail early here:
1211
586
if byte_arrays and signature != "ay":
1212
587
raise ValueError("Byte arrays not supported for non-'ay'"
1213
" signature {!r}".format(signature))
1214
588
" signature %r" % signature)
1215
589
def decorator(func):
1216
590
func._dbus_is_property = True
1217
591
func._dbus_interface = dbus_interface
1220
594
func._dbus_name = func.__name__
1221
595
if func._dbus_name.endswith("_dbus_property"):
1222
596
func._dbus_name = func._dbus_name[:-14]
1223
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
1224
return func
1225
1226
return decorator
1227
1228
1229
def dbus_interface_annotations(dbus_interface):
1230
"""Decorator for marking functions returning interface annotations
1231
1232
Usage:
1233
1234
@dbus_interface_annotations("org.example.Interface")
1235
def _foo(self): # Function name does not matter
1236
return {"org.freedesktop.DBus.Deprecated": "true",
1237
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1238
"false"}
1239
"""
1240
1241
def decorator(func):
1242
func._dbus_is_interface = True
1243
func._dbus_interface = dbus_interface
1244
func._dbus_name = dbus_interface
1245
return func
1246
1247
return decorator
1248
1249
1250
def dbus_annotations(annotations):
1251
"""Decorator to annotate D-Bus methods, signals or properties
1252
Usage:
1253
1254
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1255
"org.freedesktop.DBus.Property."
1256
"EmitsChangedSignal": "false"})
1257
@dbus_service_property("org.example.Interface", signature="b",
1258
access="r")
1259
def Property_dbus_property(self):
1260
return dbus.Boolean(False)
1261
1262
See also the DBusObjectWithAnnotations class.
1263
"""
1264
1265
def decorator(func):
1266
func._dbus_annotations = annotations
1267
return func
1268
597
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
598
return func
1269
599
return decorator
1270
600
1271
601
1272
602
class DBusPropertyException(dbus.exceptions.DBusException):
1273
603
"""A base class for D-Bus property-related exceptions
1274
604
"""
1275
pass
605
def __unicode__(self):
606
return unicode(str(self))
1276
607
1277
608
1278
609
class DBusPropertyAccessException(DBusPropertyException):
1287
618
pass
1288
619
1289
620
1290
class DBusObjectWithAnnotations(dbus.service.Object):
1291
"""A D-Bus object with annotations.
1292
1293
Classes inheriting from this can use the dbus_annotations
1294
decorator to add annotations to methods or signals.
1295
"""
1296
1297
@staticmethod
1298
def _is_dbus_thing(thing):
1299
"""Returns a function testing if an attribute is a D-Bus thing
1300
1301
If called like _is_dbus_thing("method") it returns a function
1302
suitable for use as predicate to inspect.getmembers().
1303
"""
1304
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1305
False)
1306
1307
def _get_all_dbus_things(self, thing):
1308
"""Returns a generator of (name, attribute) pairs
1309
"""
1310
return ((getattr(athing.__get__(self), "_dbus_name", name),
1311
athing.__get__(self))
1312
for cls in self.__class__.__mro__
1313
for name, athing in
1314
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1315
1316
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1317
out_signature="s",
1318
path_keyword='object_path',
1319
connection_keyword='connection')
1320
def Introspect(self, object_path, connection):
1321
"""Overloading of standard D-Bus method.
1322
1323
Inserts annotation tags on methods and signals.
1324
"""
1325
xmlstring = dbus.service.Object.Introspect(self, object_path,
1326
connection)
1327
try:
1328
document = xml.dom.minidom.parseString(xmlstring)
1329
1330
for if_tag in document.getElementsByTagName("interface"):
1331
# Add annotation tags
1332
for typ in ("method", "signal"):
1333
for tag in if_tag.getElementsByTagName(typ):
1334
annots = dict()
1335
for name, prop in (self.
1336
_get_all_dbus_things(typ)):
1337
if (name == tag.getAttribute("name")
1338
and prop._dbus_interface
1339
== if_tag.getAttribute("name")):
1340
annots.update(getattr(
1341
prop, "_dbus_annotations", {}))
1342
for name, value in annots.items():
1343
ann_tag = document.createElement(
1344
"annotation")
1345
ann_tag.setAttribute("name", name)
1346
ann_tag.setAttribute("value", value)
1347
tag.appendChild(ann_tag)
1348
# Add interface annotation tags
1349
for annotation, value in dict(
1350
itertools.chain.from_iterable(
1351
annotations().items()
1352
for name, annotations
1353
in self._get_all_dbus_things("interface")
1354
if name == if_tag.getAttribute("name")
1355
)).items():
1356
ann_tag = document.createElement("annotation")
1357
ann_tag.setAttribute("name", annotation)
1358
ann_tag.setAttribute("value", value)
1359
if_tag.appendChild(ann_tag)
1360
# Fix argument name for the Introspect method itself
1361
if (if_tag.getAttribute("name")
1362
== dbus.INTROSPECTABLE_IFACE):
1363
for cn in if_tag.getElementsByTagName("method"):
1364
if cn.getAttribute("name") == "Introspect":
1365
for arg in cn.getElementsByTagName("arg"):
1366
if (arg.getAttribute("direction")
1367
== "out"):
1368
arg.setAttribute("name",
1369
"xml_data")
1370
xmlstring = document.toxml("utf-8")
1371
document.unlink()
1372
except (AttributeError, xml.dom.DOMException,
1373
xml.parsers.expat.ExpatError) as error:
1374
logger.error("Failed to override Introspection method",
1375
exc_info=error)
1376
return xmlstring
1377
1378
1379
class DBusObjectWithProperties(DBusObjectWithAnnotations):
621
class DBusObjectWithProperties(dbus.service.Object):
1380
622
"""A D-Bus object with properties.
1381
623
1382
624
Classes inheriting from this can use the dbus_service_property
1383
625
decorator to expose methods as D-Bus properties. It exposes the
1384
626
standard Get(), Set(), and GetAll() methods on the D-Bus.
1385
627
"""
1386
628
629
@staticmethod
630
def _is_dbus_property(obj):
631
return getattr(obj, "_dbus_is_property", False)
632
633
def _get_all_dbus_properties(self):
634
"""Returns a generator of (name, attribute) pairs
635
"""
636
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
637
for cls in self.__class__.__mro__
638
for name, prop in
639
inspect.getmembers(cls, self._is_dbus_property))
640
1387
641
def _get_dbus_property(self, interface_name, property_name):
1388
642
"""Returns a bound method if one exists which is a D-Bus
1389
643
property with the specified name and interface.
1390
644
"""
1391
for cls in self.__class__.__mro__:
1392
for name, value in inspect.getmembers(
1393
cls, self._is_dbus_thing("property")):
645
for cls in self.__class__.__mro__:
646
for name, value in (inspect.getmembers
647
(cls, self._is_dbus_property)):
1394
648
if (value._dbus_name == property_name
1395
649
and value._dbus_interface == interface_name):
1396
650
return value.__get__(self)
1397
651
1398
652
# No such property
1399
raise DBusPropertyNotFound("{}:{}.{}".format(
1400
self.dbus_object_path, interface_name, property_name))
1401
1402
@classmethod
1403
def _get_all_interface_names(cls):
1404
"""Get a sequence of all interfaces supported by an object"""
1405
return (name for name in set(getattr(getattr(x, attr),
1406
"_dbus_interface", None)
1407
for x in (inspect.getmro(cls))
1408
for attr in dir(x))
1409
if name is not None)
1410
1411
@dbus.service.method(dbus.PROPERTIES_IFACE,
1412
in_signature="ss",
653
raise DBusPropertyNotFound(self.dbus_object_path + ":"
654
+ interface_name + "."
655
+ property_name)
656
657
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1413
658
out_signature="v")
1414
659
def Get(self, interface_name, property_name):
1415
660
"""Standard D-Bus property Get() method, see D-Bus standard.
1421
666
if not hasattr(value, "variant_level"):
1422
667
return value
1423
668
return type(value)(value, variant_level=value.variant_level+1)
1424
669
1425
670
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
1426
671
def Set(self, interface_name, property_name, value):
1427
672
"""Standard D-Bus property Set() method, see D-Bus standard.
1433
678
# The byte_arrays option is not supported yet on
1434
679
# signatures other than "ay".
1435
680
if prop._dbus_signature != "ay":
1436
raise ValueError("Byte arrays not supported for non-"
1437
"'ay' signature {!r}"
1438
.format(prop._dbus_signature))
1439
value = dbus.ByteArray(bytes(value))
681
raise ValueError
682
value = dbus.ByteArray(''.join(unichr(byte)
683
for byte in value))
1440
684
prop(value)
1441
1442
@dbus.service.method(dbus.PROPERTIES_IFACE,
1443
in_signature="s",
685
686
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1444
687
out_signature="a{sv}")
1445
688
def GetAll(self, interface_name):
1446
689
"""Standard D-Bus property GetAll() method, see D-Bus
1447
690
standard.
1448
691
1449
692
Note: Will not include properties with access="write".
1450
693
"""
1451
properties = {}
1452
for name, prop in self._get_all_dbus_things("property"):
694
all = {}
695
for name, prop in self._get_all_dbus_properties():
1453
696
if (interface_name
1454
697
and interface_name != prop._dbus_interface):
1455
698
# Interface non-empty but did not match
1459
702
continue
1460
703
value = prop()
1461
704
if not hasattr(value, "variant_level"):
1462
properties[name] = value
705
all[name] = value
1463
706
continue
1464
properties[name] = type(value)(
1465
value, variant_level=value.variant_level + 1)
1466
return dbus.Dictionary(properties, signature="sv")
1467
1468
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1469
def PropertiesChanged(self, interface_name, changed_properties,
1470
invalidated_properties):
1471
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1472
standard.
1473
"""
1474
pass
1475
707
all[name] = type(value)(value, variant_level=
708
value.variant_level+1)
709
return dbus.Dictionary(all, signature="sv")
710
1476
711
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1477
712
out_signature="s",
1478
713
path_keyword='object_path',
1479
714
connection_keyword='connection')
1480
715
def Introspect(self, object_path, connection):
1481
"""Overloading of standard D-Bus method.
1482
1483
Inserts property tags and interface annotation tags.
716
"""Standard D-Bus method, overloaded to insert property tags.
1484
717
"""
1485
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1486
object_path,
1487
connection)
718
xmlstring = dbus.service.Object.Introspect(self, object_path,
719
connection)
1488
720
try:
1489
721
document = xml.dom.minidom.parseString(xmlstring)
1490
1491
722
def make_tag(document, name, prop):
1492
723
e = document.createElement("property")
1493
724
e.setAttribute("name", name)
1494
725
e.setAttribute("type", prop._dbus_signature)
1495
726
e.setAttribute("access", prop._dbus_access)
1496
727
return e
1497
1498
728
for if_tag in document.getElementsByTagName("interface"):
1499
# Add property tags
1500
729
for tag in (make_tag(document, name, prop)
1501
730
for name, prop
1502
in self._get_all_dbus_things("property")
731
in self._get_all_dbus_properties()
1503
732
if prop._dbus_interface
1504
733
== if_tag.getAttribute("name")):
1505
734
if_tag.appendChild(tag)
1506
# Add annotation tags for properties
1507
for tag in if_tag.getElementsByTagName("property"):
1508
annots = dict()
1509
for name, prop in self._get_all_dbus_things(
1510
"property"):
1511
if (name == tag.getAttribute("name")
1512
and prop._dbus_interface
1513
== if_tag.getAttribute("name")):
1514
annots.update(getattr(
1515
prop, "_dbus_annotations", {}))
1516
for name, value in annots.items():
1517
ann_tag = document.createElement(
1518
"annotation")
1519
ann_tag.setAttribute("name", name)
1520
ann_tag.setAttribute("value", value)
1521
tag.appendChild(ann_tag)
1522
735
# Add the names to the return values for the
1523
736
# "org.freedesktop.DBus.Properties" methods
1524
737
if (if_tag.getAttribute("name")
1539
752
except (AttributeError, xml.dom.DOMException,
1540
753
xml.parsers.expat.ExpatError) as error:
1541
754
logger.error("Failed to override Introspection method",
1542
exc_info=error)
1543
return xmlstring
1544
1545
1546
try:
1547
dbus.OBJECT_MANAGER_IFACE
1548
except AttributeError:
1549
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1550
1551
1552
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1553
"""A D-Bus object with an ObjectManager.
1554
1555
Classes inheriting from this exposes the standard
1556
GetManagedObjects call and the InterfacesAdded and
1557
InterfacesRemoved signals on the standard
1558
"org.freedesktop.DBus.ObjectManager" interface.
1559
1560
Note: No signals are sent automatically; they must be sent
1561
manually.
1562
"""
1563
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1564
out_signature="a{oa{sa{sv}}}")
1565
def GetManagedObjects(self):
1566
"""This function must be overridden"""
1567
raise NotImplementedError()
1568
1569
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1570
signature="oa{sa{sv}}")
1571
def InterfacesAdded(self, object_path, interfaces_and_properties):
1572
pass
1573
1574
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1575
def InterfacesRemoved(self, object_path, interfaces):
1576
pass
1577
1578
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1579
out_signature="s",
1580
path_keyword='object_path',
1581
connection_keyword='connection')
1582
def Introspect(self, object_path, connection):
1583
"""Overloading of standard D-Bus method.
1584
1585
Override return argument name of GetManagedObjects to be
1586
"objpath_interfaces_and_properties"
1587
"""
1588
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1589
object_path,
1590
connection)
1591
try:
1592
document = xml.dom.minidom.parseString(xmlstring)
1593
1594
for if_tag in document.getElementsByTagName("interface"):
1595
# Fix argument name for the GetManagedObjects method
1596
if (if_tag.getAttribute("name")
1597
== dbus.OBJECT_MANAGER_IFACE):
1598
for cn in if_tag.getElementsByTagName("method"):
1599
if (cn.getAttribute("name")
1600
== "GetManagedObjects"):
1601
for arg in cn.getElementsByTagName("arg"):
1602
if (arg.getAttribute("direction")
1603
== "out"):
1604
arg.setAttribute(
1605
"name",
1606
"objpath_interfaces"
1607
"_and_properties")
1608
xmlstring = document.toxml("utf-8")
1609
document.unlink()
1610
except (AttributeError, xml.dom.DOMException,
1611
xml.parsers.expat.ExpatError) as error:
1612
logger.error("Failed to override Introspection method",
1613
exc_info=error)
1614
return xmlstring
1615
1616
1617
def datetime_to_dbus(dt, variant_level=0):
755
error)
756
return xmlstring
757
758
759
def datetime_to_dbus (dt, variant_level=0):
1618
760
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1619
761
if dt is None:
1620
return dbus.String("", variant_level=variant_level)
1621
return dbus.String(dt.isoformat(), variant_level=variant_level)
1622
1623
1624
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1625
"""A class decorator; applied to a subclass of
1626
dbus.service.Object, it will add alternate D-Bus attributes with
1627
interface names according to the "alt_interface_names" mapping.
1628
Usage:
1629
1630
@alternate_dbus_interfaces({"org.example.Interface":
1631
"net.example.AlternateInterface"})
1632
class SampleDBusObject(dbus.service.Object):
1633
@dbus.service.method("org.example.Interface")
1634
def SampleDBusMethod():
1635
pass
1636
1637
The above "SampleDBusMethod" on "SampleDBusObject" will be
1638
reachable via two interfaces: "org.example.Interface" and
1639
"net.example.AlternateInterface", the latter of which will have
1640
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1641
"true", unless "deprecate" is passed with a False value.
1642
1643
This works for methods and signals, and also for D-Bus properties
1644
(from DBusObjectWithProperties) and interfaces (from the
1645
dbus_interface_annotations decorator).
762
return dbus.String("", variant_level = variant_level)
763
return dbus.String(dt.isoformat(),
764
variant_level=variant_level)
765
766
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
767
.__metaclass__):
768
"""Applied to an empty subclass of a D-Bus object, this metaclass
769
will add additional D-Bus attributes matching a certain pattern.
1646
770
"""
1647
1648
def wrapper(cls):
1649
for orig_interface_name, alt_interface_name in (
1650
alt_interface_names.items()):
1651
attr = {}
1652
interface_names = set()
1653
# Go though all attributes of the class
1654
for attrname, attribute in inspect.getmembers(cls):
771
def __new__(mcs, name, bases, attr):
772
# Go through all the base classes which could have D-Bus
773
# methods, signals, or properties in them
774
for base in (b for b in bases
775
if issubclass(b, dbus.service.Object)):
776
# Go though all attributes of the base class
777
for attrname, attribute in inspect.getmembers(base):
1655
778
# Ignore non-D-Bus attributes, and D-Bus attributes
1656
779
# with the wrong interface name
1657
780
if (not hasattr(attribute, "_dbus_interface")
1658
or not attribute._dbus_interface.startswith(
1659
orig_interface_name)):
781
or not attribute._dbus_interface
782
.startswith("se.recompile.Mandos")):
1660
783
continue
1661
784
# Create an alternate D-Bus interface name based on
1662
785
# the current name
1663
alt_interface = attribute._dbus_interface.replace(
1664
orig_interface_name, alt_interface_name)
1665
interface_names.add(alt_interface)
786
alt_interface = (attribute._dbus_interface
787
.replace("se.recompile.Mandos",
788
"se.bsnet.fukt.Mandos"))
1666
789
# Is this a D-Bus signal?
1667
790
if getattr(attribute, "_dbus_is_signal", False):
1668
# Extract the original non-method undecorated
1669
# function by black magic
1670
if sys.version_info.major == 2:
1671
nonmethod_func = (dict(
791
# Extract the original non-method function by
792
# black magic
793
nonmethod_func = (dict(
1672
794
zip(attribute.func_code.co_freevars,
1673
attribute.__closure__))
1674
["func"].cell_contents)
1675
else:
1676
nonmethod_func = (dict(
1677
zip(attribute.__code__.co_freevars,
1678
attribute.__closure__))
1679
["func"].cell_contents)
795
attribute.__closure__))["func"]
796
.cell_contents)
1680
797
# Create a new, but exactly alike, function
1681
798
# object, and decorate it to be a new D-Bus signal
1682
799
# with the alternate D-Bus interface name
1683
new_function = copy_function(nonmethod_func)
1684
new_function = (dbus.service.signal(
1685
alt_interface,
1686
attribute._dbus_signature)(new_function))
1687
# Copy annotations, if any
1688
try:
1689
new_function._dbus_annotations = dict(
1690
attribute._dbus_annotations)
1691
except AttributeError:
1692
pass
1693
800
new_function = (dbus.service.signal
801
(alt_interface,
802
attribute._dbus_signature)
803
(types.FunctionType(
804
nonmethod_func.func_code,
805
nonmethod_func.func_globals,
806
nonmethod_func.func_name,
807
nonmethod_func.func_defaults,
808
nonmethod_func.func_closure)))
1694
809
# Define a creator of a function to call both the
1695
# original and alternate functions, so both the
1696
# original and alternate signals gets sent when
1697
# the function is called
810
# old and new functions, so both the old and new
811
# signals gets sent when the function is called
1698
812
def fixscope(func1, func2):
1699
813
"""This function is a scope container to pass
1700
814
func1 and func2 to the "call_both" function
1701
815
outside of its arguments"""
1702
1703
@functools.wraps(func2)
1704
816
def call_both(*args, **kwargs):
1705
817
"""This function will emit two D-Bus
1706
818
signals by calling func1 and func2"""
1707
819
func1(*args, **kwargs)
1708
820
func2(*args, **kwargs)
1709
# Make wrapper function look like a D-Bus
1710
# signal
1711
for name, attr in inspect.getmembers(func2):
1712
if name.startswith("_dbus_"):
1713
setattr(call_both, name, attr)
1714
1715
821
return call_both
1716
822
# Create the "call_both" function and add it to
1717
823
# the class
1718
attr[attrname] = fixscope(attribute, new_function)
824
attr[attrname] = fixscope(attribute,
825
new_function)
1719
826
# Is this a D-Bus method?
1720
827
elif getattr(attribute, "_dbus_is_method", False):
1721
828
# Create a new, but exactly alike, function
1722
829
# object. Decorate it to be a new D-Bus method
1723
830
# with the alternate D-Bus interface name. Add it
1724
831
# to the class.
1725
attr[attrname] = (
1726
dbus.service.method(
1727
alt_interface,
1728
attribute._dbus_in_signature,
1729
attribute._dbus_out_signature)
1730
(copy_function(attribute)))
1731
# Copy annotations, if any
1732
try:
1733
attr[attrname]._dbus_annotations = dict(
1734
attribute._dbus_annotations)
1735
except AttributeError:
1736
pass
832
attr[attrname] = (dbus.service.method
833
(alt_interface,
834
attribute._dbus_in_signature,
835
attribute._dbus_out_signature)
836
(types.FunctionType
837
(attribute.func_code,
838
attribute.func_globals,
839
attribute.func_name,
840
attribute.func_defaults,
841
attribute.func_closure)))
1737
842
# Is this a D-Bus property?
1738
843
elif getattr(attribute, "_dbus_is_property", False):
1739
844
# Create a new, but exactly alike, function
1740
845
# object, and decorate it to be a new D-Bus
1741
846
# property with the alternate D-Bus interface
1742
847
# name. Add it to the class.
1743
attr[attrname] = (dbus_service_property(
1744
alt_interface, attribute._dbus_signature,
1745
attribute._dbus_access,
1746
attribute._dbus_get_args_options
1747
["byte_arrays"])
1748
(copy_function(attribute)))
1749
# Copy annotations, if any
1750
try:
1751
attr[attrname]._dbus_annotations = dict(
1752
attribute._dbus_annotations)
1753
except AttributeError:
1754
pass
1755
# Is this a D-Bus interface?
1756
elif getattr(attribute, "_dbus_is_interface", False):
1757
# Create a new, but exactly alike, function
1758
# object. Decorate it to be a new D-Bus interface
1759
# with the alternate D-Bus interface name. Add it
1760
# to the class.
1761
attr[attrname] = (
1762
dbus_interface_annotations(alt_interface)
1763
(copy_function(attribute)))
1764
if deprecate:
1765
# Deprecate all alternate interfaces
1766
iname = "_AlternateDBusNames_interface_annotation{}"
1767
for interface_name in interface_names:
1768
1769
@dbus_interface_annotations(interface_name)
1770
def func(self):
1771
return {"org.freedesktop.DBus.Deprecated":
1772
"true"}
1773
# Find an unused name
1774
for aname in (iname.format(i)
1775
for i in itertools.count()):
1776
if aname not in attr:
1777
attr[aname] = func
1778
break
1779
if interface_names:
1780
# Replace the class with a new subclass of it with
1781
# methods, signals, etc. as created above.
1782
if sys.version_info.major == 2:
1783
cls = type(b"{}Alternate".format(cls.__name__),
1784
(cls, ), attr)
1785
else:
1786
cls = type("{}Alternate".format(cls.__name__),
1787
(cls, ), attr)
1788
return cls
1789
1790
return wrapper
1791
1792
1793
@alternate_dbus_interfaces({"se.recompile.Mandos":
1794
"se.bsnet.fukt.Mandos"})
848
attr[attrname] = (dbus_service_property
849
(alt_interface,
850
attribute._dbus_signature,
851
attribute._dbus_access,
852
attribute
853
._dbus_get_args_options
854
["byte_arrays"])
855
(types.FunctionType
856
(attribute.func_code,
857
attribute.func_globals,
858
attribute.func_name,
859
attribute.func_defaults,
860
attribute.func_closure)))
861
return type.__new__(mcs, name, bases, attr)
862
1795
863
class ClientDBus(Client, DBusObjectWithProperties):
1796
864
"""A Client class using D-Bus
1797
865
1798
866
Attributes:
1799
867
dbus_object_path: dbus.ObjectPath
1800
868
bus: dbus.SystemBus()
1801
869
"""
1802
870
1803
871
runtime_expansions = (Client.runtime_expansions
1804
+ ("dbus_object_path", ))
1805
1806
_interface = "se.recompile.Mandos.Client"
1807
872
+ ("dbus_object_path",))
873
1808
874
# dbus.service.Object doesn't use super(), so we can't either.
1809
1810
def __init__(self, bus=None, *args, **kwargs):
875
876
def __init__(self, bus = None, *args, **kwargs):
877
self._approvals_pending = 0
1811
878
self.bus = bus
1812
879
Client.__init__(self, *args, **kwargs)
1813
880
# Only now, when this client is initialized, can it show up on
1814
881
# the D-Bus
1815
client_object_name = str(self.name).translate(
882
client_object_name = unicode(self.name).translate(
1816
883
{ord("."): ord("_"),
1817
884
ord("-"): ord("_")})
1818
self.dbus_object_path = dbus.ObjectPath(
1819
"/clients/" + client_object_name)
885
self.dbus_object_path = (dbus.ObjectPath
886
("/clients/" + client_object_name))
1820
887
DBusObjectWithProperties.__init__(self, self.bus,
1821
888
self.dbus_object_path)
1822
1823
def notifychangeproperty(transform_func, dbus_name,
1824
type_func=lambda x: x,
1825
variant_level=1,
1826
invalidate_only=False,
1827
_interface=_interface):
889
890
def notifychangeproperty(transform_func,
891
dbus_name, type_func=lambda x: x,
892
variant_level=1):
1828
893
""" Modify a variable so that it's a property which announces
1829
894
its changes to DBus.
1830
895
1835
900
to the D-Bus. Default: no transform
1836
901
variant_level: D-Bus variant level. Default: 1
1837
902
"""
1838
attrname = "_{}".format(dbus_name)
1839
903
attrname = "_{0}".format(dbus_name)
1840
904
def setter(self, value):
1841
905
if hasattr(self, "dbus_object_path"):
1842
906
if (not hasattr(self, attrname) or
1843
907
type_func(getattr(self, attrname, None))
1844
908
!= type_func(value)):
1845
if invalidate_only:
1846
self.PropertiesChanged(
1847
_interface, dbus.Dictionary(),
1848
dbus.Array((dbus_name, )))
1849
else:
1850
dbus_value = transform_func(
1851
type_func(value),
1852
variant_level=variant_level)
1853
self.PropertyChanged(dbus.String(dbus_name),
1854
dbus_value)
1855
self.PropertiesChanged(
1856
_interface,
1857
dbus.Dictionary({dbus.String(dbus_name):
1858
dbus_value}),
1859
dbus.Array())
909
dbus_value = transform_func(type_func(value),
910
variant_level
911
=variant_level)
912
self.PropertyChanged(dbus.String(dbus_name),
913
dbus_value)
1860
914
setattr(self, attrname, value)
1861
915
1862
916
return property(lambda self: getattr(self, attrname), setter)
1863
917
918
1864
919
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1865
920
approvals_pending = notifychangeproperty(dbus.Boolean,
1866
921
"ApprovalPending",
1867
type_func=bool)
922
type_func = bool)
1868
923
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1869
924
last_enabled = notifychangeproperty(datetime_to_dbus,
1870
925
"LastEnabled")
1871
checker = notifychangeproperty(
1872
dbus.Boolean, "CheckerRunning",
1873
type_func=lambda checker: checker is not None)
926
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
927
type_func = lambda checker:
928
checker is not None)
1874
929
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1875
930
"LastCheckedOK")
1876
last_checker_status = notifychangeproperty(dbus.Int16,
1877
"LastCheckerStatus")
1878
931
last_approval_request = notifychangeproperty(
1879
932
datetime_to_dbus, "LastApprovalRequest")
1880
933
approved_by_default = notifychangeproperty(dbus.Boolean,
1881
934
"ApprovedByDefault")
1882
approval_delay = notifychangeproperty(
1883
dbus.UInt64, "ApprovalDelay",
1884
type_func=lambda td: td.total_seconds() * 1000)
935
approval_delay = notifychangeproperty(dbus.UInt16,
936
"ApprovalDelay",
937
type_func =
938
_timedelta_to_milliseconds)
1885
939
approval_duration = notifychangeproperty(
1886
dbus.UInt64, "ApprovalDuration",
1887
type_func=lambda td: td.total_seconds() * 1000)
940
dbus.UInt16, "ApprovalDuration",
941
type_func = _timedelta_to_milliseconds)
1888
942
host = notifychangeproperty(dbus.String, "Host")
1889
timeout = notifychangeproperty(
1890
dbus.UInt64, "Timeout",
1891
type_func=lambda td: td.total_seconds() * 1000)
943
timeout = notifychangeproperty(dbus.UInt16, "Timeout",
944
type_func =
945
_timedelta_to_milliseconds)
1892
946
extended_timeout = notifychangeproperty(
1893
dbus.UInt64, "ExtendedTimeout",
1894
type_func=lambda td: td.total_seconds() * 1000)
1895
interval = notifychangeproperty(
1896
dbus.UInt64, "Interval",
1897
type_func=lambda td: td.total_seconds() * 1000)
947
dbus.UInt16, "ExtendedTimeout",
948
type_func = _timedelta_to_milliseconds)
949
interval = notifychangeproperty(dbus.UInt16,
950
"Interval",
951
type_func =
952
_timedelta_to_milliseconds)
1898
953
checker_command = notifychangeproperty(dbus.String, "Checker")
1899
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1900
invalidate_only=True)
1901
954
1902
955
del notifychangeproperty
1903
956
1904
957
def __del__(self, *args, **kwargs):
1905
958
try:
1906
959
self.remove_from_connection()
1909
962
if hasattr(DBusObjectWithProperties, "__del__"):
1910
963
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1911
964
Client.__del__(self, *args, **kwargs)
1912
1913
def checker_callback(self, source, condition,
1914
connection, command, *args, **kwargs):
1915
ret = Client.checker_callback(self, source, condition,
1916
connection, command, *args,
1917
**kwargs)
1918
exitstatus = self.last_checker_status
1919
if exitstatus >= 0:
965
966
def checker_callback(self, pid, condition, command,
967
*args, **kwargs):
968
self.checker_callback_tag = None
969
self.checker = None
970
if os.WIFEXITED(condition):
971
exitstatus = os.WEXITSTATUS(condition)
1920
972
# Emit D-Bus signal
1921
973
self.CheckerCompleted(dbus.Int16(exitstatus),
1922
# This is specific to GNU libC
1923
dbus.Int64(exitstatus << 8),
974
dbus.Int64(condition),
1924
975
dbus.String(command))
1925
976
else:
1926
977
# Emit D-Bus signal
1927
978
self.CheckerCompleted(dbus.Int16(-1),
1928
dbus.Int64(
1929
# This is specific to GNU libC
1930
(exitstatus << 8)
1931
| self.last_checker_signal),
979
dbus.Int64(condition),
1932
980
dbus.String(command))
1933
return ret
1934
981
982
return Client.checker_callback(self, pid, condition, command,
983
*args, **kwargs)
984
1935
985
def start_checker(self, *args, **kwargs):
1936
old_checker_pid = getattr(self.checker, "pid", None)
986
old_checker = self.checker
987
if self.checker is not None:
988
old_checker_pid = self.checker.pid
989
else:
990
old_checker_pid = None
1937
991
r = Client.start_checker(self, *args, **kwargs)
1938
992
# Only if new checker process was started
1939
993
if (self.checker is not None
1941
995
# Emit D-Bus signal
1942
996
self.CheckerStarted(self.current_checker_command)
1943
997
return r
1944
998
1945
999
def _reset_approved(self):
1946
self.approved = None
1000
self._approved = None
1947
1001
return False
1948
1002
1949
1003
def approve(self, value=True):
1950
self.approved = value
1951
GLib.timeout_add(int(self.approval_duration.total_seconds()
1952
* 1000), self._reset_approved)
1953
1004
self.send_changedstate()
1954
1955
# D-Bus methods, signals & properties
1956
1957
# Interfaces
1958
1959
# Signals
1960
1005
self._approved = value
1006
gobject.timeout_add(_timedelta_to_milliseconds
1007
(self.approval_duration),
1008
self._reset_approved)
1009
1010
1011
## D-Bus methods, signals & properties
1012
_interface = "se.recompile.Mandos.Client"
1013
1014
## Signals
1015
1961
1016
# CheckerCompleted - signal
1962
1017
@dbus.service.signal(_interface, signature="nxs")
1963
1018
def CheckerCompleted(self, exitcode, waitstatus, command):
1964
1019
"D-Bus signal"
1965
1020
pass
1966
1021
1967
1022
# CheckerStarted - signal
1968
1023
@dbus.service.signal(_interface, signature="s")
1969
1024
def CheckerStarted(self, command):
1970
1025
"D-Bus signal"
1971
1026
pass
1972
1027
1973
1028
# PropertyChanged - signal
1974
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1975
1029
@dbus.service.signal(_interface, signature="sv")
1976
1030
def PropertyChanged(self, property, value):
1977
1031
"D-Bus signal"
1978
1032
pass
1979
1033
1980
1034
# GotSecret - signal
1981
1035
@dbus.service.signal(_interface)
1982
1036
def GotSecret(self):
1985
1039
server to mandos-client
1986
1040
"""
1987
1041
pass
1988
1042
1989
1043
# Rejected - signal
1990
1044
@dbus.service.signal(_interface, signature="s")
1991
1045
def Rejected(self, reason):
1992
1046
"D-Bus signal"
1993
1047
pass
1994
1048
1995
1049
# NeedApproval - signal
1996
1050
@dbus.service.signal(_interface, signature="tb")
1997
1051
def NeedApproval(self, timeout, default):
1998
1052
"D-Bus signal"
1999
1053
return self.need_approval()
2000
2001
# Methods
2002
1054
1055
## Methods
1056
2003
1057
# Approve - method
2004
1058
@dbus.service.method(_interface, in_signature="b")
2005
1059
def Approve(self, value):
2006
1060
self.approve(value)
2007
1061
2008
1062
# CheckedOK - method
2009
1063
@dbus.service.method(_interface)
2010
1064
def CheckedOK(self):
2011
1065
self.checked_ok()
2012
1066
2013
1067
# Enable - method
2014
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2015
1068
@dbus.service.method(_interface)
2016
1069
def Enable(self):
2017
1070
"D-Bus method"
2018
1071
self.enable()
2019
1072
2020
1073
# StartChecker - method
2021
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2022
1074
@dbus.service.method(_interface)
2023
1075
def StartChecker(self):
2024
1076
"D-Bus method"
2025
1077
self.start_checker()
2026
1078
2027
1079
# Disable - method
2028
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2029
1080
@dbus.service.method(_interface)
2030
1081
def Disable(self):
2031
1082
"D-Bus method"
2032
1083
self.disable()
2033
1084
2034
1085
# StopChecker - method
2035
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2036
1086
@dbus.service.method(_interface)
2037
1087
def StopChecker(self):
2038
1088
self.stop_checker()
2039
2040
# Properties
2041
1089
1090
## Properties
1091
2042
1092
# ApprovalPending - property
2043
1093
@dbus_service_property(_interface, signature="b", access="read")
2044
1094
def ApprovalPending_dbus_property(self):
2045
1095
return dbus.Boolean(bool(self.approvals_pending))
2046
1096
2047
1097
# ApprovedByDefault - property
2048
@dbus_service_property(_interface,
2049
signature="b",
1098
@dbus_service_property(_interface, signature="b",
2050
1099
access="readwrite")
2051
1100
def ApprovedByDefault_dbus_property(self, value=None):
2052
1101
if value is None: # get
2053
1102
return dbus.Boolean(self.approved_by_default)
2054
1103
self.approved_by_default = bool(value)
2055
1104
2056
1105
# ApprovalDelay - property
2057
@dbus_service_property(_interface,
2058
signature="t",
1106
@dbus_service_property(_interface, signature="t",
2059
1107
access="readwrite")
2060
1108
def ApprovalDelay_dbus_property(self, value=None):
2061
1109
if value is None: # get
2062
return dbus.UInt64(self.approval_delay.total_seconds()
2063
* 1000)
1110
return dbus.UInt64(self.approval_delay_milliseconds())
2064
1111
self.approval_delay = datetime.timedelta(0, 0, 0, value)
2065
1112
2066
1113
# ApprovalDuration - property
2067
@dbus_service_property(_interface,
2068
signature="t",
1114
@dbus_service_property(_interface, signature="t",
2069
1115
access="readwrite")
2070
1116
def ApprovalDuration_dbus_property(self, value=None):
2071
1117
if value is None: # get
2072
return dbus.UInt64(self.approval_duration.total_seconds()
2073
* 1000)
1118
return dbus.UInt64(_timedelta_to_milliseconds(
1119
self.approval_duration))
2074
1120
self.approval_duration = datetime.timedelta(0, 0, 0, value)
2075
1121
2076
1122
# Name - property
2077
@dbus_annotations(
2078
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2079
1123
@dbus_service_property(_interface, signature="s", access="read")
2080
1124
def Name_dbus_property(self):
2081
1125
return dbus.String(self.name)
2082
2083
# KeyID - property
2084
@dbus_annotations(
2085
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2086
@dbus_service_property(_interface, signature="s", access="read")
2087
def KeyID_dbus_property(self):
2088
return dbus.String(self.key_id)
2089
1126
2090
1127
# Fingerprint - property
2091
@dbus_annotations(
2092
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2093
1128
@dbus_service_property(_interface, signature="s", access="read")
2094
1129
def Fingerprint_dbus_property(self):
2095
1130
return dbus.String(self.fingerprint)
2096
1131
2097
1132
# Host - property
2098
@dbus_service_property(_interface,
2099
signature="s",
1133
@dbus_service_property(_interface, signature="s",
2100
1134
access="readwrite")
2101
1135
def Host_dbus_property(self, value=None):
2102
1136
if value is None: # get
2103
1137
return dbus.String(self.host)
2104
self.host = str(value)
2105
1138
self.host = value
1139
2106
1140
# Created - property
2107
@dbus_annotations(
2108
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2109
1141
@dbus_service_property(_interface, signature="s", access="read")
2110
1142
def Created_dbus_property(self):
2111
return datetime_to_dbus(self.created)
2112
1143
return dbus.String(datetime_to_dbus(self.created))
1144
2113
1145
# LastEnabled - property
2114
1146
@dbus_service_property(_interface, signature="s", access="read")
2115
1147
def LastEnabled_dbus_property(self):
2116
1148
return datetime_to_dbus(self.last_enabled)
2117
1149
2118
1150
# Enabled - property
2119
@dbus_service_property(_interface,
2120
signature="b",
1151
@dbus_service_property(_interface, signature="b",
2121
1152
access="readwrite")
2122
1153
def Enabled_dbus_property(self, value=None):
2123
1154
if value is None: # get
2126
1157
self.enable()
2127
1158
else:
2128
1159
self.disable()
2129
1160
2130
1161
# LastCheckedOK - property
2131
@dbus_service_property(_interface,
2132
signature="s",
1162
@dbus_service_property(_interface, signature="s",
2133
1163
access="readwrite")
2134
1164
def LastCheckedOK_dbus_property(self, value=None):
2135
1165
if value is not None:
2136
1166
self.checked_ok()
2137
1167
return
2138
1168
return datetime_to_dbus(self.last_checked_ok)
2139
2140
# LastCheckerStatus - property
2141
@dbus_service_property(_interface, signature="n", access="read")
2142
def LastCheckerStatus_dbus_property(self):
2143
return dbus.Int16(self.last_checker_status)
2144
1169
2145
1170
# Expires - property
2146
1171
@dbus_service_property(_interface, signature="s", access="read")
2147
1172
def Expires_dbus_property(self):
2148
1173
return datetime_to_dbus(self.expires)
2149
1174
2150
1175
# LastApprovalRequest - property
2151
1176
@dbus_service_property(_interface, signature="s", access="read")
2152
1177
def LastApprovalRequest_dbus_property(self):
2153
1178
return datetime_to_dbus(self.last_approval_request)
2154
1179
2155
1180
# Timeout - property
2156
@dbus_service_property(_interface,
2157
signature="t",
1181
@dbus_service_property(_interface, signature="t",
2158
1182
access="readwrite")
2159
1183
def Timeout_dbus_property(self, value=None):
2160
1184
if value is None: # get
2161
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2162
old_timeout = self.timeout
1185
return dbus.UInt64(self.timeout_milliseconds())
2163
1186
self.timeout = datetime.timedelta(0, 0, 0, value)
2164
# Reschedule disabling
2165
if self.enabled:
2166
now = datetime.datetime.utcnow()
2167
self.expires += self.timeout - old_timeout
2168
if self.expires <= now:
2169
# The timeout has passed
2170
self.disable()
2171
else:
2172
if (getattr(self, "disable_initiator_tag", None)
2173
is None):
2174
return
2175
GLib.source_remove(self.disable_initiator_tag)
2176
self.disable_initiator_tag = GLib.timeout_add(
2177
int((self.expires - now).total_seconds() * 1000),
2178
self.disable)
2179
1187
if getattr(self, "disable_initiator_tag", None) is None:
1188
return
1189
# Reschedule timeout
1190
gobject.source_remove(self.disable_initiator_tag)
1191
self.disable_initiator_tag = None
1192
self.expires = None
1193
time_to_die = _timedelta_to_milliseconds((self
1194
.last_checked_ok
1195
+ self.timeout)
1196
- datetime.datetime
1197
.utcnow())
1198
if time_to_die <= 0:
1199
# The timeout has passed
1200
self.disable()
1201
else:
1202
self.expires = (datetime.datetime.utcnow()
1203
+ datetime.timedelta(milliseconds =
1204
time_to_die))
1205
self.disable_initiator_tag = (gobject.timeout_add
1206
(time_to_die, self.disable))
1207
2180
1208
# ExtendedTimeout - property
2181
@dbus_service_property(_interface,
2182
signature="t",
1209
@dbus_service_property(_interface, signature="t",
2183
1210
access="readwrite")
2184
1211
def ExtendedTimeout_dbus_property(self, value=None):
2185
1212
if value is None: # get
2186
return dbus.UInt64(self.extended_timeout.total_seconds()
2187
* 1000)
1213
return dbus.UInt64(self.extended_timeout_milliseconds())
2188
1214
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2189
1215
2190
1216
# Interval - property
2191
@dbus_service_property(_interface,
2192
signature="t",
1217
@dbus_service_property(_interface, signature="t",
2193
1218
access="readwrite")
2194
1219
def Interval_dbus_property(self, value=None):
2195
1220
if value is None: # get
2196
return dbus.UInt64(self.interval.total_seconds() * 1000)
1221
return dbus.UInt64(self.interval_milliseconds())
2197
1222
self.interval = datetime.timedelta(0, 0, 0, value)
2198
1223
if getattr(self, "checker_initiator_tag", None) is None:
2199
1224
return
2200
if self.enabled:
2201
# Reschedule checker run
2202
GLib.source_remove(self.checker_initiator_tag)
2203
self.checker_initiator_tag = GLib.timeout_add(
2204
value, self.start_checker)
2205
self.start_checker() # Start one now, too
2206
1225
# Reschedule checker run
1226
gobject.source_remove(self.checker_initiator_tag)
1227
self.checker_initiator_tag = (gobject.timeout_add
1228
(value, self.start_checker))
1229
self.start_checker() # Start one now, too
1230
2207
1231
# Checker - property
2208
@dbus_service_property(_interface,
2209
signature="s",
1232
@dbus_service_property(_interface, signature="s",
2210
1233
access="readwrite")
2211
1234
def Checker_dbus_property(self, value=None):
2212
1235
if value is None: # get
2213
1236
return dbus.String(self.checker_command)
2214
self.checker_command = str(value)
2215
1237
self.checker_command = value
1238
2216
1239
# CheckerRunning - property
2217
@dbus_service_property(_interface,
2218
signature="b",
1240
@dbus_service_property(_interface, signature="b",
2219
1241
access="readwrite")
2220
1242
def CheckerRunning_dbus_property(self, value=None):
2221
1243
if value is None: # get
2224
1246
self.start_checker()
2225
1247
else:
2226
1248
self.stop_checker()
2227
1249
2228
1250
# ObjectPath - property
2229
@dbus_annotations(
2230
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2231
"org.freedesktop.DBus.Deprecated": "true"})
2232
1251
@dbus_service_property(_interface, signature="o", access="read")
2233
1252
def ObjectPath_dbus_property(self):
2234
return self.dbus_object_path # is already a dbus.ObjectPath
2235
1253
return self.dbus_object_path # is already a dbus.ObjectPath
1254
2236
1255
# Secret = property
2237
@dbus_annotations(
2238
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2239
"invalidates"})
2240
@dbus_service_property(_interface,
2241
signature="ay",
2242
access="write",
2243
byte_arrays=True)
1256
@dbus_service_property(_interface, signature="ay",
1257
access="write", byte_arrays=True)
2244
1258
def Secret_dbus_property(self, value):
2245
self.secret = bytes(value)
2246
1259
self.secret = str(value)
1260
2247
1261
del _interface
2248
1262
2249
1263
2250
class ProxyClient:
2251
def __init__(self, child_pipe, key_id, fpr, address):
1264
class ProxyClient(object):
1265
def __init__(self, child_pipe, fpr, address):
2252
1266
self._pipe = child_pipe
2253
self._pipe.send(('init', key_id, fpr, address))
1267
self._pipe.send(('init', fpr, address))
2254
1268
if not self._pipe.recv():
2255
raise KeyError(key_id or fpr)
2256
1269
raise KeyError()
1270
2257
1271
def __getattribute__(self, name):
2258
if name == '_pipe':
1272
if(name == '_pipe'):
2259
1273
return super(ProxyClient, self).__getattribute__(name)
2260
1274
self._pipe.send(('getattr', name))
2261
1275
data = self._pipe.recv()
2262
1276
if data[0] == 'data':
2263
1277
return data[1]
2264
1278
if data[0] == 'function':
2265
2266
1279
def func(*args, **kwargs):
2267
1280
self._pipe.send(('funcall', name, args, kwargs))
2268
1281
return self._pipe.recv()[1]
2269
2270
1282
return func
2271
1283
2272
1284
def __setattr__(self, name, value):
2273
if name == '_pipe':
1285
if(name == '_pipe'):
2274
1286
return super(ProxyClient, self).__setattr__(name, value)
2275
1287
self._pipe.send(('setattr', name, value))
2276
1288
1289
class ClientDBusTransitional(ClientDBus):
1290
__metaclass__ = AlternateDBusNamesMetaclass
2277
1291
2278
1292
class ClientHandler(socketserver.BaseRequestHandler, object):
2279
1293
"""A class to handle client connections.
2280
1294
2281
1295
Instantiated once for each connection to handle it.
2282
1296
Note: This will run in its own forked process."""
2283
1297
2284
1298
def handle(self):
2285
1299
with contextlib.closing(self.server.child_pipe) as child_pipe:
2286
1300
logger.info("TCP connection from: %s",
2287
str(self.client_address))
1301
unicode(self.client_address))
2288
1302
logger.debug("Pipe FD: %d",
2289
1303
self.server.child_pipe.fileno())
2290
2291
session = gnutls.ClientSession(self.request)
2292
2293
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2294
# "+AES-256-CBC", "+SHA1",
2295
# "+COMP-NULL", "+CTYPE-OPENPGP",
2296
# "+DHE-DSS"))
1304
1305
session = (gnutls.connection
1306
.ClientSession(self.request,
1307
gnutls.connection
1308
.X509Credentials()))
1309
1310
# Note: gnutls.connection.X509Credentials is really a
1311
# generic GnuTLS certificate credentials object so long as
1312
# no X.509 keys are added to it. Therefore, we can use it
1313
# here despite using OpenPGP certificates.
1314
1315
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1316
# "+AES-256-CBC", "+SHA1",
1317
# "+COMP-NULL", "+CTYPE-OPENPGP",
1318
# "+DHE-DSS"))
2297
1319
# Use a fallback default, since this MUST be set.
2298
1320
priority = self.server.gnutls_priority
2299
1321
if priority is None:
2300
1322
priority = "NORMAL"
2301
gnutls.priority_set_direct(session._c_object,
2302
priority.encode("utf-8"),
2303
None)
2304
1323
(gnutls.library.functions
1324
.gnutls_priority_set_direct(session._c_object,
1325
priority, None))
1326
2305
1327
# Start communication using the Mandos protocol
2306
1328
# Get protocol number
2307
1329
line = self.request.makefile().readline()
2308
1330
logger.debug("Protocol version: %r", line)
2309
1331
try:
2310
1332
if int(line.strip().split()[0]) > 1:
2311
raise RuntimeError(line)
1333
raise RuntimeError
2312
1334
except (ValueError, IndexError, RuntimeError) as error:
2313
1335
logger.error("Unknown protocol version: %s", error)
2314
1336
return
2315
1337
2316
1338
# Start GnuTLS connection
2317
1339
try:
2318
1340
session.handshake()
2319
except gnutls.Error as error:
1341
except gnutls.errors.GNUTLSError as error:
2320
1342
logger.warning("Handshake failed: %s", error)
2321
1343
# Do not run session.bye() here: the session is not
2322
1344
# established. Just abandon the request.
2323
1345
return
2324
1346
logger.debug("Handshake succeeded")
2325
1347
2326
1348
approval_required = False
2327
1349
try:
2328
if gnutls.has_rawpk:
2329
fpr = b""
2330
try:
2331
key_id = self.key_id(
2332
self.peer_certificate(session))
2333
except (TypeError, gnutls.Error) as error:
2334
logger.warning("Bad certificate: %s", error)
2335
return
2336
logger.debug("Key ID: %s", key_id)
2337
2338
else:
2339
key_id = b""
2340
try:
2341
fpr = self.fingerprint(
2342
self.peer_certificate(session))
2343
except (TypeError, gnutls.Error) as error:
2344
logger.warning("Bad certificate: %s", error)
2345
return
2346
logger.debug("Fingerprint: %s", fpr)
2347
2348
try:
2349
client = ProxyClient(child_pipe, key_id, fpr,
1350
try:
1351
fpr = self.fingerprint(self.peer_certificate
1352
(session))
1353
except (TypeError,
1354
gnutls.errors.GNUTLSError) as error:
1355
logger.warning("Bad certificate: %s", error)
1356
return
1357
logger.debug("Fingerprint: %s", fpr)
1358
1359
try:
1360
client = ProxyClient(child_pipe, fpr,
2350
1361
self.client_address)
2351
1362
except KeyError:
2352
1363
return
2353
1364
2354
1365
if client.approval_delay:
2355
1366
delay = client.approval_delay
2356
1367
client.approvals_pending += 1
2357
1368
approval_required = True
2358
1369
2359
1370
while True:
2360
1371
if not client.enabled:
2361
1372
logger.info("Client %s is disabled",
2362
client.name)
1373
client.name)
2363
1374
if self.server.use_dbus:
2364
1375
# Emit D-Bus signal
2365
1376
client.Rejected("Disabled")
2366
1377
return
2367
2368
if client.approved or not client.approval_delay:
2369
# We are approved or approval is disabled
1378
1379
if client._approved or not client.approval_delay:
1380
#We are approved or approval is disabled
2370
1381
break
2371
elif client.approved is None:
1382
elif client._approved is None:
2372
1383
logger.info("Client %s needs approval",
2373
1384
client.name)
2374
1385
if self.server.use_dbus:
2375
1386
# Emit D-Bus signal
2376
1387
client.NeedApproval(
2377
client.approval_delay.total_seconds()
2378
* 1000, client.approved_by_default)
1388
client.approval_delay_milliseconds(),
1389
client.approved_by_default)
2379
1390
else:
2380
1391
logger.warning("Client %s was not approved",
2381
1392
client.name)
2383
1394
# Emit D-Bus signal
2384
1395
client.Rejected("Denied")
2385
1396
return
2386
2387
# wait until timeout or approved
1397
1398
#wait until timeout or approved
2388
1399
time = datetime.datetime.now()
2389
1400
client.changedstate.acquire()
2390
client.changedstate.wait(delay.total_seconds())
1401
(client.changedstate.wait
1402
(float(client._timedelta_to_milliseconds(delay)
1403
/ 1000)))
2391
1404
client.changedstate.release()
2392
1405
time2 = datetime.datetime.now()
2393
1406
if (time2 - time) >= delay:
2403
1416
break
2404
1417
else:
2405
1418
delay -= time2 - time
2406
2407
try:
2408
session.send(client.secret)
2409
except gnutls.Error as error:
2410
logger.warning("gnutls send failed",
2411
exc_info=error)
2412
return
2413
1419
1420
sent_size = 0
1421
while sent_size < len(client.secret):
1422
try:
1423
sent = session.send(client.secret[sent_size:])
1424
except gnutls.errors.GNUTLSError as error:
1425
logger.warning("gnutls send failed")
1426
return
1427
logger.debug("Sent: %d, remaining: %d",
1428
sent, len(client.secret)
1429
- (sent_size + sent))
1430
sent_size += sent
1431
2414
1432
logger.info("Sending secret to %s", client.name)
2415
1433
# bump the timeout using extended_timeout
2416
client.bump_timeout(client.extended_timeout)
1434
client.checked_ok(client.extended_timeout)
2417
1435
if self.server.use_dbus:
2418
1436
# Emit D-Bus signal
2419
1437
client.GotSecret()
2420
1438
2421
1439
finally:
2422
1440
if approval_required:
2423
1441
client.approvals_pending -= 1
2424
1442
try:
2425
1443
session.bye()
2426
except gnutls.Error as error:
2427
logger.warning("GnuTLS bye failed",
2428
exc_info=error)
2429
1444
except gnutls.errors.GNUTLSError as error:
1445
logger.warning("GnuTLS bye failed")
1446
2430
1447
@staticmethod
2431
1448
def peer_certificate(session):
2432
"Return the peer's certificate as a bytestring"
2433
try:
2434
cert_type = gnutls.certificate_type_get2(session._c_object,
2435
gnutls.CTYPE_PEERS)
2436
except AttributeError:
2437
cert_type = gnutls.certificate_type_get(session._c_object)
2438
if gnutls.has_rawpk:
2439
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2440
else:
2441
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2442
# If not a valid certificate type...
2443
if cert_type not in valid_cert_types:
2444
logger.info("Cert type %r not in %r", cert_type,
2445
valid_cert_types)
2446
# ...return invalid data
2447
return b""
1449
"Return the peer's OpenPGP certificate as a bytestring"
1450
# If not an OpenPGP certificate...
1451
if (gnutls.library.functions
1452
.gnutls_certificate_type_get(session._c_object)
1453
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1454
# ...do the normal thing
1455
return session.peer_certificate
2448
1456
list_size = ctypes.c_uint(1)
2449
cert_list = (gnutls.certificate_get_peers
1457
cert_list = (gnutls.library.functions
1458
.gnutls_certificate_get_peers
2450
1459
(session._c_object, ctypes.byref(list_size)))
2451
1460
if not bool(cert_list) and list_size.value != 0:
2452
raise gnutls.Error("error getting peer certificate")
1461
raise gnutls.errors.GNUTLSError("error getting peer"
1462
" certificate")
2453
1463
if list_size.value == 0:
2454
1464
return None
2455
1465
cert = cert_list[0]
2456
1466
return ctypes.string_at(cert.data, cert.size)
2457
2458
@staticmethod
2459
def key_id(certificate):
2460
"Convert a certificate bytestring to a hexdigit key ID"
2461
# New GnuTLS "datum" with the public key
2462
datum = gnutls.datum_t(
2463
ctypes.cast(ctypes.c_char_p(certificate),
2464
ctypes.POINTER(ctypes.c_ubyte)),
2465
ctypes.c_uint(len(certificate)))
2466
# XXX all these need to be created in the gnutls "module"
2467
# New empty GnuTLS certificate
2468
pubkey = gnutls.pubkey_t()
2469
gnutls.pubkey_init(ctypes.byref(pubkey))
2470
# Import the raw public key into the certificate
2471
gnutls.pubkey_import(pubkey,
2472
ctypes.byref(datum),
2473
gnutls.X509_FMT_DER)
2474
# New buffer for the key ID
2475
buf = ctypes.create_string_buffer(32)
2476
buf_len = ctypes.c_size_t(len(buf))
2477
# Get the key ID from the raw public key into the buffer
2478
gnutls.pubkey_get_key_id(
2479
pubkey,
2480
gnutls.KEYID_USE_SHA256,
2481
ctypes.cast(ctypes.byref(buf),
2482
ctypes.POINTER(ctypes.c_ubyte)),
2483
ctypes.byref(buf_len))
2484
# Deinit the certificate
2485
gnutls.pubkey_deinit(pubkey)
2486
2487
# Convert the buffer to a Python bytestring
2488
key_id = ctypes.string_at(buf, buf_len.value)
2489
# Convert the bytestring to hexadecimal notation
2490
hex_key_id = binascii.hexlify(key_id).upper()
2491
return hex_key_id
2492
1467
2493
1468
@staticmethod
2494
1469
def fingerprint(openpgp):
2495
1470
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2496
1471
# New GnuTLS "datum" with the OpenPGP public key
2497
datum = gnutls.datum_t(
2498
ctypes.cast(ctypes.c_char_p(openpgp),
2499
ctypes.POINTER(ctypes.c_ubyte)),
2500
ctypes.c_uint(len(openpgp)))
1472
datum = (gnutls.library.types
1473
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1474
ctypes.POINTER
1475
(ctypes.c_ubyte)),
1476
ctypes.c_uint(len(openpgp))))
2501
1477
# New empty GnuTLS certificate
2502
crt = gnutls.openpgp_crt_t()
2503
gnutls.openpgp_crt_init(ctypes.byref(crt))
1478
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1479
(gnutls.library.functions
1480
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2504
1481
# Import the OpenPGP public key into the certificate
2505
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2506
gnutls.OPENPGP_FMT_RAW)
1482
(gnutls.library.functions
1483
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1484
gnutls.library.constants
1485
.GNUTLS_OPENPGP_FMT_RAW))
2507
1486
# Verify the self signature in the key
2508
1487
crtverify = ctypes.c_uint()
2509
gnutls.openpgp_crt_verify_self(crt, 0,
2510
ctypes.byref(crtverify))
1488
(gnutls.library.functions
1489
.gnutls_openpgp_crt_verify_self(crt, 0,
1490
ctypes.byref(crtverify)))
2511
1491
if crtverify.value != 0:
2512
gnutls.openpgp_crt_deinit(crt)
2513
raise gnutls.CertificateSecurityError(code
2514
=crtverify.value)
1492
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1493
raise (gnutls.errors.CertificateSecurityError
1494
("Verify failed"))
2515
1495
# New buffer for the fingerprint
2516
1496
buf = ctypes.create_string_buffer(20)
2517
1497
buf_len = ctypes.c_size_t()
2518
1498
# Get the fingerprint from the certificate into the buffer
2519
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2520
ctypes.byref(buf_len))
1499
(gnutls.library.functions
1500
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1501
ctypes.byref(buf_len)))
2521
1502
# Deinit the certificate
2522
gnutls.openpgp_crt_deinit(crt)
1503
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2523
1504
# Convert the buffer to a Python bytestring
2524
1505
fpr = ctypes.string_at(buf, buf_len.value)
2525
1506
# Convert the bytestring to hexadecimal notation
2526
hex_fpr = binascii.hexlify(fpr).upper()
1507
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
2527
1508
return hex_fpr
2528
1509
2529
1510
2530
class MultiprocessingMixIn:
1511
class MultiprocessingMixIn(object):
2531
1512
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2532
2533
1513
def sub_process_main(self, request, address):
2534
1514
try:
2535
1515
self.finish_request(request, address)
2536
except Exception:
1516
except:
2537
1517
self.handle_error(request, address)
2538
1518
self.close_request(request)
2539
1519
2540
1520
def process_request(self, request, address):
2541
1521
"""Start a new process to process the request."""
2542
proc = multiprocessing.Process(target=self.sub_process_main,
2543
args=(request, address))
1522
proc = multiprocessing.Process(target = self.sub_process_main,
1523
args = (request,
1524
address))
2544
1525
proc.start()
2545
1526
return proc
2546
1527
2547
1528
2548
class MultiprocessingMixInWithPipe(MultiprocessingMixIn):
1529
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2549
1530
""" adds a pipe to the MixIn """
2550
2551
1531
def process_request(self, request, client_address):
2552
1532
"""Overrides and wraps the original process_request().
2553
1533
2554
1534
This function creates a new pipe in self.pipe
2555
1535
"""
2556
1536
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2557
1537
2558
1538
proc = MultiprocessingMixIn.process_request(self, request,
2559
1539
client_address)
2560
1540
self.child_pipe.close()
2561
1541
self.add_pipe(parent_pipe, proc)
2562
1542
2563
1543
def add_pipe(self, parent_pipe, proc):
2564
1544
"""Dummy function; override as necessary"""
2565
raise NotImplementedError()
1545
raise NotImplementedError
2566
1546
2567
1547
2568
1548
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2569
socketserver.TCPServer):
1549
socketserver.TCPServer, object):
2570
1550
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
2571
1551
2572
1552
Attributes:
2573
1553
enabled: Boolean; whether this server is activated yet
2574
1554
interface: None or a network interface name (string)
2575
1555
use_ipv6: Boolean; to use IPv6 or not
2576
1556
"""
2577
2578
1557
def __init__(self, server_address, RequestHandlerClass,
2579
interface=None,
2580
use_ipv6=True,
2581
socketfd=None):
2582
"""If socketfd is set, use that file descriptor instead of
2583
creating a new one with socket.socket().
2584
"""
1558
interface=None, use_ipv6=True):
2585
1559
self.interface = interface
2586
1560
if use_ipv6:
2587
1561
self.address_family = socket.AF_INET6
2588
if socketfd is not None:
2589
# Save the file descriptor
2590
self.socketfd = socketfd
2591
# Save the original socket.socket() function
2592
self.socket_socket = socket.socket
2593
2594
# To implement --socket, we monkey patch socket.socket.
2595
#
2596
# (When socketserver.TCPServer is a new-style class, we
2597
# could make self.socket into a property instead of monkey
2598
# patching socket.socket.)
2599
#
2600
# Create a one-time-only replacement for socket.socket()
2601
@functools.wraps(socket.socket)
2602
def socket_wrapper(*args, **kwargs):
2603
# Restore original function so subsequent calls are
2604
# not affected.
2605
socket.socket = self.socket_socket
2606
del self.socket_socket
2607
# This time only, return a new socket object from the
2608
# saved file descriptor.
2609
return socket.fromfd(self.socketfd, *args, **kwargs)
2610
# Replace socket.socket() function with wrapper
2611
socket.socket = socket_wrapper
2612
# The socketserver.TCPServer.__init__ will call
2613
# socket.socket(), which might be our replacement,
2614
# socket_wrapper(), if socketfd was set.
2615
1562
socketserver.TCPServer.__init__(self, server_address,
2616
1563
RequestHandlerClass)
2617
2618
1564
def server_bind(self):
2619
1565
"""This overrides the normal server_bind() function
2620
1566
to bind to an interface if one was specified, and also NOT to
2621
1567
bind to an address or port if they were not specified."""
2622
global SO_BINDTODEVICE
2623
1568
if self.interface is not None:
2624
1569
if SO_BINDTODEVICE is None:
2625
# Fall back to a hard-coded value which seems to be
2626
# common enough.
2627
logger.warning("SO_BINDTODEVICE not found, trying 25")
2628
SO_BINDTODEVICE = 25
2629
try:
2630
self.socket.setsockopt(
2631
socket.SOL_SOCKET, SO_BINDTODEVICE,
2632
(self.interface + "\0").encode("utf-8"))
2633
except socket.error as error:
2634
if error.errno == errno.EPERM:
2635
logger.error("No permission to bind to"
2636
" interface %s", self.interface)
2637
elif error.errno == errno.ENOPROTOOPT:
2638
logger.error("SO_BINDTODEVICE not available;"
2639
" cannot bind to interface %s",
2640
self.interface)
2641
elif error.errno == errno.ENODEV:
2642
logger.error("Interface %s does not exist,"
2643
" cannot bind", self.interface)
2644
else:
2645
raise
1570
logger.error("SO_BINDTODEVICE does not exist;"
1571
" cannot bind to interface %s",
1572
self.interface)
1573
else:
1574
try:
1575
self.socket.setsockopt(socket.SOL_SOCKET,
1576
SO_BINDTODEVICE,
1577
str(self.interface
1578
+ '\0'))
1579
except socket.error as error:
1580
if error[0] == errno.EPERM:
1581
logger.error("No permission to"
1582
" bind to interface %s",
1583
self.interface)
1584
elif error[0] == errno.ENOPROTOOPT:
1585
logger.error("SO_BINDTODEVICE not available;"
1586
" cannot bind to interface %s",
1587
self.interface)
1588
else:
1589
raise
2646
1590
# Only bind(2) the socket if we really need to.
2647
1591
if self.server_address[0] or self.server_address[1]:
2648
if self.server_address[1]:
2649
self.allow_reuse_address = True
2650
1592
if not self.server_address[0]:
2651
1593
if self.address_family == socket.AF_INET6:
2652
any_address = "::" # in6addr_any
1594
any_address = "::" # in6addr_any
2653
1595
else:
2654
any_address = "0.0.0.0" # INADDR_ANY
1596
any_address = socket.INADDR_ANY
2655
1597
self.server_address = (any_address,
2656
1598
self.server_address[1])
2657
1599
elif not self.server_address[1]:
2658
self.server_address = (self.server_address[0], 0)
1600
self.server_address = (self.server_address[0],
1601
0)
2659
1602
# if self.interface:
2660
1603
# self.server_address = (self.server_address[0],
2661
1604
# 0, # port
2667
1610
2668
1611
class MandosServer(IPv6_TCPServer):
2669
1612
"""Mandos server.
2670
1613
2671
1614
Attributes:
2672
1615
clients: set of Client objects
2673
1616
gnutls_priority GnuTLS priority string
2674
1617
use_dbus: Boolean; to emit D-Bus signals or not
2675
2676
Assumes a GLib.MainLoop event loop.
1618
1619
Assumes a gobject.MainLoop event loop.
2677
1620
"""
2678
2679
1621
def __init__(self, server_address, RequestHandlerClass,
2680
interface=None,
2681
use_ipv6=True,
2682
clients=None,
2683
gnutls_priority=None,
2684
use_dbus=True,
2685
socketfd=None):
1622
interface=None, use_ipv6=True, clients=None,
1623
gnutls_priority=None, use_dbus=True):
2686
1624
self.enabled = False
2687
1625
self.clients = clients
2688
1626
if self.clients is None:
2689
self.clients = {}
1627
self.clients = set()
2690
1628
self.use_dbus = use_dbus
2691
1629
self.gnutls_priority = gnutls_priority
2692
1630
IPv6_TCPServer.__init__(self, server_address,
2693
1631
RequestHandlerClass,
2694
interface=interface,
2695
use_ipv6=use_ipv6,
2696
socketfd=socketfd)
2697
1632
interface = interface,
1633
use_ipv6 = use_ipv6)
2698
1634
def server_activate(self):
2699
1635
if self.enabled:
2700
1636
return socketserver.TCPServer.server_activate(self)
2701
1637
2702
1638
def enable(self):
2703
1639
self.enabled = True
2704
1640
2705
1641
def add_pipe(self, parent_pipe, proc):
2706
1642
# Call "handle_ipc" for both data and EOF events
2707
GLib.io_add_watch(
2708
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2709
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2710
functools.partial(self.handle_ipc,
2711
parent_pipe=parent_pipe,
2712
proc=proc))
2713
2714
def handle_ipc(self, source, condition,
2715
parent_pipe=None,
2716
proc=None,
2717
client_object=None):
1643
gobject.io_add_watch(parent_pipe.fileno(),
1644
gobject.IO_IN | gobject.IO_HUP,
1645
functools.partial(self.handle_ipc,
1646
parent_pipe =
1647
parent_pipe,
1648
proc = proc))
1649
1650
def handle_ipc(self, source, condition, parent_pipe=None,
1651
proc = None, client_object=None):
1652
condition_names = {
1653
gobject.IO_IN: "IN", # There is data to read.
1654
gobject.IO_OUT: "OUT", # Data can be written (without
1655
# blocking).
1656
gobject.IO_PRI: "PRI", # There is urgent data to read.
1657
gobject.IO_ERR: "ERR", # Error condition.
1658
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1659
# broken, usually for pipes and
1660
# sockets).
1661
}
1662
conditions_string = ' | '.join(name
1663
for cond, name in
1664
condition_names.iteritems()
1665
if cond & condition)
2718
1666
# error, or the other end of multiprocessing.Pipe has closed
2719
if condition & (GLib.IO_ERR | GLib.IO_HUP):
1667
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2720
1668
# Wait for other process to exit
2721
1669
proc.join()
2722
1670
return False
2723
1671
2724
1672
# Read a request from the child
2725
1673
request = parent_pipe.recv()
2726
1674
command = request[0]
2727
1675
2728
1676
if command == 'init':
2729
key_id = request[1].decode("ascii")
2730
fpr = request[2].decode("ascii")
2731
address = request[3]
2732
2733
for c in self.clients.values():
2734
if key_id == ("E3B0C44298FC1C149AFBF4C8996FB924"
2735
"27AE41E4649B934CA495991B7852B855"):
2736
continue
2737
if key_id and c.key_id == key_id:
2738
client = c
2739
break
2740
if fpr and c.fingerprint == fpr:
1677
fpr = request[1]
1678
address = request[2]
1679
1680
for c in self.clients:
1681
if c.fingerprint == fpr:
2741
1682
client = c
2742
1683
break
2743
1684
else:
2744
logger.info("Client not found for key ID: %s, address"
2745
": %s", key_id or fpr, address)
1685
logger.info("Client not found for fingerprint: %s, ad"
1686
"dress: %s", fpr, address)
2746
1687
if self.use_dbus:
2747
1688
# Emit D-Bus signal
2748
mandos_dbus_service.ClientNotFound(key_id or fpr,
1689
mandos_dbus_service.ClientNotFound(fpr,
2749
1690
address[0])
2750
1691
parent_pipe.send(False)
2751
1692
return False
2752
2753
GLib.io_add_watch(
2754
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2755
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2756
functools.partial(self.handle_ipc,
2757
parent_pipe=parent_pipe,
2758
proc=proc,
2759
client_object=client))
1693
1694
gobject.io_add_watch(parent_pipe.fileno(),
1695
gobject.IO_IN | gobject.IO_HUP,
1696
functools.partial(self.handle_ipc,
1697
parent_pipe =
1698
parent_pipe,
1699
proc = proc,
1700
client_object =
1701
client))
2760
1702
parent_pipe.send(True)
2761
1703
# remove the old hook in favor of the new above hook on
2762
1704
# same fileno
2765
1707
funcname = request[1]
2766
1708
args = request[2]
2767
1709
kwargs = request[3]
2768
1710
2769
1711
parent_pipe.send(('data', getattr(client_object,
2770
1712
funcname)(*args,
2771
**kwargs)))
2772
1713
**kwargs)))
1714
2773
1715
if command == 'getattr':
2774
1716
attrname = request[1]
2775
if isinstance(client_object.__getattribute__(attrname),
2776
collections.abc.Callable):
2777
parent_pipe.send(('function', ))
1717
if callable(client_object.__getattribute__(attrname)):
1718
parent_pipe.send(('function',))
2778
1719
else:
2779
parent_pipe.send((
2780
'data', client_object.__getattribute__(attrname)))
2781
1720
parent_pipe.send(('data', client_object
1721
.__getattribute__(attrname)))
1722
2782
1723
if command == 'setattr':
2783
1724
attrname = request[1]
2784
1725
value = request[2]
2785
1726
setattr(client_object, attrname, value)
2786
1727
2787
1728
return True
2788
1729
2789
1730
2790
def rfc3339_duration_to_delta(duration):
2791
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2792
2793
>>> timedelta = datetime.timedelta
2794
>>> rfc3339_duration_to_delta("P7D") == timedelta(7)
2795
True
2796
>>> rfc3339_duration_to_delta("PT60S") == timedelta(0, 60)
2797
True
2798
>>> rfc3339_duration_to_delta("PT60M") == timedelta(0, 3600)
2799
True
2800
>>> rfc3339_duration_to_delta("PT24H") == timedelta(1)
2801
True
2802
>>> rfc3339_duration_to_delta("P1W") == timedelta(7)
2803
True
2804
>>> rfc3339_duration_to_delta("PT5M30S") == timedelta(0, 330)
2805
True
2806
>>> rfc3339_duration_to_delta("P1DT3M20S") == timedelta(1, 200)
2807
True
2808
>>> del timedelta
2809
"""
2810
2811
# Parsing an RFC 3339 duration with regular expressions is not
2812
# possible - there would have to be multiple places for the same
2813
# values, like seconds. The current code, while more esoteric, is
2814
# cleaner without depending on a parsing library. If Python had a
2815
# built-in library for parsing we would use it, but we'd like to
2816
# avoid excessive use of external libraries.
2817
2818
# New type for defining tokens, syntax, and semantics all-in-one
2819
Token = collections.namedtuple("Token", (
2820
"regexp", # To match token; if "value" is not None, must have
2821
# a "group" containing digits
2822
"value", # datetime.timedelta or None
2823
"followers")) # Tokens valid after this token
2824
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2825
# the "duration" ABNF definition in RFC 3339, Appendix A.
2826
token_end = Token(re.compile(r"$"), None, frozenset())
2827
token_second = Token(re.compile(r"(\d+)S"),
2828
datetime.timedelta(seconds=1),
2829
frozenset((token_end, )))
2830
token_minute = Token(re.compile(r"(\d+)M"),
2831
datetime.timedelta(minutes=1),
2832
frozenset((token_second, token_end)))
2833
token_hour = Token(re.compile(r"(\d+)H"),
2834
datetime.timedelta(hours=1),
2835
frozenset((token_minute, token_end)))
2836
token_time = Token(re.compile(r"T"),
2837
None,
2838
frozenset((token_hour, token_minute,
2839
token_second)))
2840
token_day = Token(re.compile(r"(\d+)D"),
2841
datetime.timedelta(days=1),
2842
frozenset((token_time, token_end)))
2843
token_month = Token(re.compile(r"(\d+)M"),
2844
datetime.timedelta(weeks=4),
2845
frozenset((token_day, token_end)))
2846
token_year = Token(re.compile(r"(\d+)Y"),
2847
datetime.timedelta(weeks=52),
2848
frozenset((token_month, token_end)))
2849
token_week = Token(re.compile(r"(\d+)W"),
2850
datetime.timedelta(weeks=1),
2851
frozenset((token_end, )))
2852
token_duration = Token(re.compile(r"P"), None,
2853
frozenset((token_year, token_month,
2854
token_day, token_time,
2855
token_week)))
2856
# Define starting values:
2857
# Value so far
2858
value = datetime.timedelta()
2859
found_token = None
2860
# Following valid tokens
2861
followers = frozenset((token_duration, ))
2862
# String left to parse
2863
s = duration
2864
# Loop until end token is found
2865
while found_token is not token_end:
2866
# Search for any currently valid tokens
2867
for token in followers:
2868
match = token.regexp.match(s)
2869
if match is not None:
2870
# Token found
2871
if token.value is not None:
2872
# Value found, parse digits
2873
factor = int(match.group(1), 10)
2874
# Add to value so far
2875
value += factor * token.value
2876
# Strip token from string
2877
s = token.regexp.sub("", s, 1)
2878
# Go to found token
2879
found_token = token
2880
# Set valid next tokens
2881
followers = found_token.followers
2882
break
2883
else:
2884
# No currently valid tokens were found
2885
raise ValueError("Invalid RFC 3339 duration: {!r}"
2886
.format(duration))
2887
# End token found
2888
return value
2889
2890
2891
1731
def string_to_delta(interval):
2892
1732
"""Parse a string and return a datetime.timedelta
2893
2894
>>> string_to_delta('7d') == datetime.timedelta(7)
2895
True
2896
>>> string_to_delta('60s') == datetime.timedelta(0, 60)
2897
True
2898
>>> string_to_delta('60m') == datetime.timedelta(0, 3600)
2899
True
2900
>>> string_to_delta('24h') == datetime.timedelta(1)
2901
True
2902
>>> string_to_delta('1w') == datetime.timedelta(7)
2903
True
2904
>>> string_to_delta('5m 30s') == datetime.timedelta(0, 330)
2905
True
1733
1734
>>> string_to_delta('7d')
1735
datetime.timedelta(7)
1736
>>> string_to_delta('60s')
1737
datetime.timedelta(0, 60)
1738
>>> string_to_delta('60m')
1739
datetime.timedelta(0, 3600)
1740
>>> string_to_delta('24h')
1741
datetime.timedelta(1)
1742
>>> string_to_delta('1w')
1743
datetime.timedelta(7)
1744
>>> string_to_delta('5m 30s')
1745
datetime.timedelta(0, 330)
2906
1746
"""
2907
2908
try:
2909
return rfc3339_duration_to_delta(interval)
2910
except ValueError:
2911
pass
2912
2913
1747
timevalue = datetime.timedelta(0)
2914
1748
for s in interval.split():
2915
1749
try:
2916
suffix = s[-1]
1750
suffix = unicode(s[-1])
2917
1751
value = int(s[:-1])
2918
1752
if suffix == "d":
2919
1753
delta = datetime.timedelta(value)
2926
1760
elif suffix == "w":
2927
1761
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2928
1762
else:
2929
raise ValueError("Unknown suffix {!r}".format(suffix))
2930
except IndexError as e:
1763
raise ValueError("Unknown suffix %r" % suffix)
1764
except (ValueError, IndexError) as e:
2931
1765
raise ValueError(*(e.args))
2932
1766
timevalue += delta
2933
1767
return timevalue
2934
1768
2935
1769
2936
def daemon(nochdir=False, noclose=False):
1770
def if_nametoindex(interface):
1771
"""Call the C function if_nametoindex(), or equivalent
1772
1773
Note: This function cannot accept a unicode string."""
1774
global if_nametoindex
1775
try:
1776
if_nametoindex = (ctypes.cdll.LoadLibrary
1777
(ctypes.util.find_library("c"))
1778
.if_nametoindex)
1779
except (OSError, AttributeError):
1780
logger.warning("Doing if_nametoindex the hard way")
1781
def if_nametoindex(interface):
1782
"Get an interface index the hard way, i.e. using fcntl()"
1783
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1784
with contextlib.closing(socket.socket()) as s:
1785
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1786
struct.pack(str("16s16x"),
1787
interface))
1788
interface_index = struct.unpack(str("I"),
1789
ifreq[16:20])[0]
1790
return interface_index
1791
return if_nametoindex(interface)
1792
1793
1794
def daemon(nochdir = False, noclose = False):
2937
1795
"""See daemon(3). Standard BSD Unix function.
2938
1796
2939
1797
This should really exist as os.daemon, but it doesn't (yet)."""
2940
1798
if os.fork():
2941
1799
sys.exit()
2946
1804
sys.exit()
2947
1805
if not noclose:
2948
1806
# Close all standard open file descriptors
2949
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1807
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2950
1808
if not stat.S_ISCHR(os.fstat(null).st_mode):
2951
1809
raise OSError(errno.ENODEV,
2952
"{} not a character device"
2953
.format(os.devnull))
1810
"%s not a character device"
1811
% os.path.devnull)
2954
1812
os.dup2(null, sys.stdin.fileno())
2955
1813
os.dup2(null, sys.stdout.fileno())
2956
1814
os.dup2(null, sys.stderr.fileno())
2959
1817
2960
1818
2961
1819
def main():
2962
1820
2963
1821
##################################################################
2964
1822
# Parsing of options, both command line and config file
2965
1823
2966
1824
parser = argparse.ArgumentParser()
2967
1825
parser.add_argument("-v", "--version", action="version",
2968
version="%(prog)s {}".format(version),
1826
version = "%%(prog)s %s" % version,
2969
1827
help="show version number and exit")
2970
1828
parser.add_argument("-i", "--interface", metavar="IF",
2971
1829
help="Bind to interface IF")
2977
1835
help="Run self-test")
2978
1836
parser.add_argument("--debug", action="store_true",
2979
1837
help="Debug mode; run in foreground and log"
2980
" to terminal", default=None)
1838
" to terminal")
2981
1839
parser.add_argument("--debuglevel", metavar="LEVEL",
2982
1840
help="Debug level for stdout output")
2983
1841
parser.add_argument("--priority", help="GnuTLS"
2990
1848
" files")
2991
1849
parser.add_argument("--no-dbus", action="store_false",
2992
1850
dest="use_dbus", help="Do not provide D-Bus"
2993
" system bus interface", default=None)
1851
" system bus interface")
2994
1852
parser.add_argument("--no-ipv6", action="store_false",
2995
dest="use_ipv6", help="Do not use IPv6",
2996
default=None)
2997
parser.add_argument("--no-restore", action="store_false",
2998
dest="restore", help="Do not restore stored"
2999
" state", default=None)
3000
parser.add_argument("--socket", type=int,
3001
help="Specify a file descriptor to a network"
3002
" socket to use instead of creating one")
3003
parser.add_argument("--statedir", metavar="DIR",
3004
help="Directory to save/restore state in")
3005
parser.add_argument("--foreground", action="store_true",
3006
help="Run in foreground", default=None)
3007
parser.add_argument("--no-zeroconf", action="store_false",
3008
dest="zeroconf", help="Do not use Zeroconf",
3009
default=None)
3010
1853
dest="use_ipv6", help="Do not use IPv6")
3011
1854
options = parser.parse_args()
3012
1855
1856
if options.check:
1857
import doctest
1858
doctest.testmod()
1859
sys.exit()
1860
3013
1861
# Default values for config file for server-global settings
3014
if gnutls.has_rawpk:
3015
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
3016
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
3017
else:
3018
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
3019
":+SIGN-DSA-SHA256")
3020
server_defaults = {"interface": "",
3021
"address": "",
3022
"port": "",
3023
"debug": "False",
3024
"priority": priority,
3025
"servicename": "Mandos",
3026
"use_dbus": "True",
3027
"use_ipv6": "True",
3028
"debuglevel": "",
3029
"restore": "True",
3030
"socket": "",
3031
"statedir": "/var/lib/mandos",
3032
"foreground": "False",
3033
"zeroconf": "True",
3034
}
3035
del priority
3036
1862
server_defaults = { "interface": "",
1863
"address": "",
1864
"port": "",
1865
"debug": "False",
1866
"priority":
1867
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1868
"servicename": "Mandos",
1869
"use_dbus": "True",
1870
"use_ipv6": "True",
1871
"debuglevel": "",
1872
}
1873
3037
1874
# Parse config file for server-global settings
3038
server_config = configparser.ConfigParser(server_defaults)
1875
server_config = configparser.SafeConfigParser(server_defaults)
3039
1876
del server_defaults
3040
server_config.read(os.path.join(options.configdir, "mandos.conf"))
3041
# Convert the ConfigParser object to a dict
1877
server_config.read(os.path.join(options.configdir,
1878
"mandos.conf"))
1879
# Convert the SafeConfigParser object to a dict
3042
1880
server_settings = server_config.defaults()
3043
1881
# Use the appropriate methods on the non-string config options
3044
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3045
"foreground", "zeroconf"):
1882
for option in ("debug", "use_dbus", "use_ipv6"):
3046
1883
server_settings[option] = server_config.getboolean("DEFAULT",
3047
1884
option)
3048
1885
if server_settings["port"]:
3049
1886
server_settings["port"] = server_config.getint("DEFAULT",
3050
1887
"port")
3051
if server_settings["socket"]:
3052
server_settings["socket"] = server_config.getint("DEFAULT",
3053
"socket")
3054
# Later, stdin will, and stdout and stderr might, be dup'ed
3055
# over with an opened os.devnull. But we don't want this to
3056
# happen with a supplied network socket.
3057
if 0 <= server_settings["socket"] <= 2:
3058
server_settings["socket"] = os.dup(server_settings
3059
["socket"])
3060
1888
del server_config
3061
1889
3062
1890
# Override the settings from the config file with command line
3063
1891
# options, if set.
3064
1892
for option in ("interface", "address", "port", "debug",
3065
"priority", "servicename", "configdir", "use_dbus",
3066
"use_ipv6", "debuglevel", "restore", "statedir",
3067
"socket", "foreground", "zeroconf"):
1893
"priority", "servicename", "configdir",
1894
"use_dbus", "use_ipv6", "debuglevel"):
3068
1895
value = getattr(options, option)
3069
1896
if value is not None:
3070
1897
server_settings[option] = value
3071
1898
del options
3072
1899
# Force all strings to be unicode
3073
1900
for option in server_settings.keys():
3074
if isinstance(server_settings[option], bytes):
3075
server_settings[option] = (server_settings[option]
3076
.decode("utf-8"))
3077
# Force all boolean options to be boolean
3078
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3079
"foreground", "zeroconf"):
3080
server_settings[option] = bool(server_settings[option])
3081
# Debug implies foreground
3082
if server_settings["debug"]:
3083
server_settings["foreground"] = True
1901
if type(server_settings[option]) is str:
1902
server_settings[option] = unicode(server_settings[option])
3084
1903
# Now we have our good server settings in "server_settings"
3085
1904
3086
1905
##################################################################
3087
3088
if (not server_settings["zeroconf"]
3089
and not (server_settings["port"]
3090
or server_settings["socket"] != "")):
3091
parser.error("Needs port or socket to work without Zeroconf")
3092
1906
3093
1907
# For convenience
3094
1908
debug = server_settings["debug"]
3095
1909
debuglevel = server_settings["debuglevel"]
3096
1910
use_dbus = server_settings["use_dbus"]
3097
1911
use_ipv6 = server_settings["use_ipv6"]
3098
stored_state_path = os.path.join(server_settings["statedir"],
3099
stored_state_file)
3100
foreground = server_settings["foreground"]
3101
zeroconf = server_settings["zeroconf"]
3102
3103
if debug:
3104
initlogger(debug, logging.DEBUG)
3105
else:
3106
if not debuglevel:
3107
initlogger(debug)
3108
else:
3109
level = getattr(logging, debuglevel.upper())
3110
initlogger(debug, level)
3111
1912
3112
1913
if server_settings["servicename"] != "Mandos":
3113
syslogger.setFormatter(
3114
logging.Formatter('Mandos ({}) [%(process)d]:'
3115
' %(levelname)s: %(message)s'.format(
3116
server_settings["servicename"])))
3117
1914
syslogger.setFormatter(logging.Formatter
1915
('Mandos (%s) [%%(process)d]:'
1916
' %%(levelname)s: %%(message)s'
1917
% server_settings["servicename"]))
1918
3118
1919
# Parse config file with clients
3119
client_config = configparser.ConfigParser(Client.client_defaults)
1920
client_defaults = { "timeout": "5m",
1921
"extended_timeout": "15m",
1922
"interval": "2m",
1923
"checker": "fping -q -- %%(host)s",
1924
"host": "",
1925
"approval_delay": "0s",
1926
"approval_duration": "1s",
1927
}
1928
client_config = configparser.SafeConfigParser(client_defaults)
3120
1929
client_config.read(os.path.join(server_settings["configdir"],
3121
1930
"clients.conf"))
3122
1931
3123
1932
global mandos_dbus_service
3124
1933
mandos_dbus_service = None
3125
3126
socketfd = None
3127
if server_settings["socket"] != "":
3128
socketfd = server_settings["socket"]
3129
tcp_server = MandosServer(
3130
(server_settings["address"], server_settings["port"]),
3131
ClientHandler,
3132
interface=(server_settings["interface"] or None),
3133
use_ipv6=use_ipv6,
3134
gnutls_priority=server_settings["priority"],
3135
use_dbus=use_dbus,
3136
socketfd=socketfd)
3137
if not foreground:
3138
pidfilename = "/run/mandos.pid"
3139
if not os.path.isdir("/run/."):
3140
pidfilename = "/var/run/mandos.pid"
3141
pidfile = None
3142
try:
3143
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3144
except IOError as e:
3145
logger.error("Could not open file %r", pidfilename,
3146
exc_info=e)
3147
3148
for name, group in (("_mandos", "_mandos"),
3149
("mandos", "mandos"),
3150
("nobody", "nogroup")):
3151
try:
3152
uid = pwd.getpwnam(name).pw_uid
3153
gid = pwd.getpwnam(group).pw_gid
3154
break
1934
1935
tcp_server = MandosServer((server_settings["address"],
1936
server_settings["port"]),
1937
ClientHandler,
1938
interface=(server_settings["interface"]
1939
or None),
1940
use_ipv6=use_ipv6,
1941
gnutls_priority=
1942
server_settings["priority"],
1943
use_dbus=use_dbus)
1944
if not debug:
1945
pidfilename = "/var/run/mandos.pid"
1946
try:
1947
pidfile = open(pidfilename, "w")
1948
except IOError:
1949
logger.error("Could not open file %r", pidfilename)
1950
1951
try:
1952
uid = pwd.getpwnam("_mandos").pw_uid
1953
gid = pwd.getpwnam("_mandos").pw_gid
1954
except KeyError:
1955
try:
1956
uid = pwd.getpwnam("mandos").pw_uid
1957
gid = pwd.getpwnam("mandos").pw_gid
3155
1958
except KeyError:
3156
continue
3157
else:
3158
uid = 65534
3159
gid = 65534
1959
try:
1960
uid = pwd.getpwnam("nobody").pw_uid
1961
gid = pwd.getpwnam("nobody").pw_gid
1962
except KeyError:
1963
uid = 65534
1964
gid = 65534
3160
1965
try:
3161
1966
os.setgid(gid)
3162
1967
os.setuid(uid)
3163
if debug:
3164
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3165
gid))
3166
1968
except OSError as error:
3167
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3168
.format(uid, gid, os.strerror(error.errno)))
3169
if error.errno != errno.EPERM:
3170
raise
3171
1969
if error[0] != errno.EPERM:
1970
raise error
1971
1972
if not debug and not debuglevel:
1973
syslogger.setLevel(logging.WARNING)
1974
console.setLevel(logging.WARNING)
1975
if debuglevel:
1976
level = getattr(logging, debuglevel.upper())
1977
syslogger.setLevel(level)
1978
console.setLevel(level)
1979
3172
1980
if debug:
3173
1981
# Enable all possible GnuTLS debugging
3174
1982
3175
1983
# "Use a log level over 10 to enable all debugging options."
3176
1984
# - GnuTLS manual
3177
gnutls.global_set_log_level(11)
3178
3179
@gnutls.log_func
1985
gnutls.library.functions.gnutls_global_set_log_level(11)
1986
1987
@gnutls.library.types.gnutls_log_func
3180
1988
def debug_gnutls(level, string):
3181
1989
logger.debug("GnuTLS: %s", string[:-1])
3182
3183
gnutls.global_set_log_function(debug_gnutls)
3184
1990
1991
(gnutls.library.functions
1992
.gnutls_global_set_log_function(debug_gnutls))
1993
3185
1994
# Redirect stdin so all checkers get /dev/null
3186
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1995
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3187
1996
os.dup2(null, sys.stdin.fileno())
3188
1997
if null > 2:
3189
1998
os.close(null)
3190
1999
else:
2000
# No console logging
2001
logger.removeHandler(console)
2002
3191
2003
# Need to fork before connecting to D-Bus
3192
if not foreground:
2004
if not debug:
3193
2005
# Close all input and output, do double fork, etc.
3194
2006
daemon()
3195
3196
if gi.version_info < (3, 10, 2):
3197
# multiprocessing will use threads, so before we use GLib we
3198
# need to inform GLib that threads will be used.
3199
GLib.threads_init()
3200
2007
3201
2008
global main_loop
3202
2009
# From the Avahi example code
3203
DBusGMainLoop(set_as_default=True)
3204
main_loop = GLib.MainLoop()
2010
DBusGMainLoop(set_as_default=True )
2011
main_loop = gobject.MainLoop()
3205
2012
bus = dbus.SystemBus()
3206
2013
# End of Avahi example code
3207
2014
if use_dbus:
3208
2015
try:
3209
2016
bus_name = dbus.service.BusName("se.recompile.Mandos",
3210
bus,
3211
do_not_queue=True)
3212
old_bus_name = dbus.service.BusName(
3213
"se.bsnet.fukt.Mandos", bus,
3214
do_not_queue=True)
3215
except dbus.exceptions.DBusException as e:
3216
logger.error("Disabling D-Bus:", exc_info=e)
2017
bus, do_not_queue=True)
2018
old_bus_name = (dbus.service.BusName
2019
("se.bsnet.fukt.Mandos", bus,
2020
do_not_queue=True))
2021
except dbus.exceptions.NameExistsException as e:
2022
logger.error(unicode(e) + ", disabling D-Bus")
3217
2023
use_dbus = False
3218
2024
server_settings["use_dbus"] = False
3219
2025
tcp_server.use_dbus = False
3220
if zeroconf:
3221
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3222
service = AvahiServiceToSyslog(
3223
name=server_settings["servicename"],
3224
servicetype="_mandos._tcp",
3225
protocol=protocol,
3226
bus=bus)
3227
if server_settings["interface"]:
3228
service.interface = if_nametoindex(
3229
server_settings["interface"].encode("utf-8"))
3230
2026
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2027
service = AvahiService(name = server_settings["servicename"],
2028
servicetype = "_mandos._tcp",
2029
protocol = protocol, bus = bus)
2030
if server_settings["interface"]:
2031
service.interface = (if_nametoindex
2032
(str(server_settings["interface"])))
2033
3231
2034
global multiprocessing_manager
3232
2035
multiprocessing_manager = multiprocessing.Manager()
3233
2036
3234
2037
client_class = Client
3235
2038
if use_dbus:
3236
client_class = functools.partial(ClientDBus, bus=bus)
3237
3238
client_settings = Client.config_parser(client_config)
3239
old_client_settings = {}
3240
clients_data = {}
3241
3242
# This is used to redirect stdout and stderr for checker processes
3243
global wnull
3244
wnull = open(os.devnull, "w") # A writable /dev/null
3245
# Only used if server is running in foreground but not in debug
3246
# mode
3247
if debug or not foreground:
3248
wnull.close()
3249
3250
# Get client data and settings from last running state.
3251
if server_settings["restore"]:
3252
try:
3253
with open(stored_state_path, "rb") as stored_state:
3254
if sys.version_info.major == 2:
3255
clients_data, old_client_settings = pickle.load(
3256
stored_state)
3257
else:
3258
bytes_clients_data, bytes_old_client_settings = (
3259
pickle.load(stored_state, encoding="bytes"))
3260
# Fix bytes to strings
3261
# clients_data
3262
# .keys()
3263
clients_data = {(key.decode("utf-8")
3264
if isinstance(key, bytes)
3265
else key): value
3266
for key, value in
3267
bytes_clients_data.items()}
3268
del bytes_clients_data
3269
for key in clients_data:
3270
value = {(k.decode("utf-8")
3271
if isinstance(k, bytes) else k): v
3272
for k, v in
3273
clients_data[key].items()}
3274
clients_data[key] = value
3275
# .client_structure
3276
value["client_structure"] = [
3277
(s.decode("utf-8")
3278
if isinstance(s, bytes)
3279
else s) for s in
3280
value["client_structure"]]
3281
# .name, .host, and .checker_command
3282
for k in ("name", "host", "checker_command"):
3283
if isinstance(value[k], bytes):
3284
value[k] = value[k].decode("utf-8")
3285
if "key_id" not in value:
3286
value["key_id"] = ""
3287
elif "fingerprint" not in value:
3288
value["fingerprint"] = ""
3289
# old_client_settings
3290
# .keys()
3291
old_client_settings = {
3292
(key.decode("utf-8")
3293
if isinstance(key, bytes)
3294
else key): value
3295
for key, value in
3296
bytes_old_client_settings.items()}
3297
del bytes_old_client_settings
3298
# .host and .checker_command
3299
for value in old_client_settings.values():
3300
for attribute in ("host", "checker_command"):
3301
if isinstance(value[attribute], bytes):
3302
value[attribute] = (value[attribute]
3303
.decode("utf-8"))
3304
os.remove(stored_state_path)
3305
except IOError as e:
3306
if e.errno == errno.ENOENT:
3307
logger.warning("Could not load persistent state:"
3308
" {}".format(os.strerror(e.errno)))
3309
else:
3310
logger.critical("Could not load persistent state:",
3311
exc_info=e)
3312
raise
3313
except EOFError as e:
3314
logger.warning("Could not load persistent state: "
3315
"EOFError:",
3316
exc_info=e)
3317
3318
with PGPEngine() as pgp:
3319
for client_name, client in clients_data.items():
3320
# Skip removed clients
3321
if client_name not in client_settings:
3322
continue
3323
3324
# Decide which value to use after restoring saved state.
3325
# We have three different values: Old config file,
3326
# new config file, and saved state.
3327
# New config value takes precedence if it differs from old
3328
# config value, otherwise use saved state.
3329
for name, value in client_settings[client_name].items():
3330
try:
3331
# For each value in new config, check if it
3332
# differs from the old config value (Except for
3333
# the "secret" attribute)
3334
if (name != "secret"
3335
and (value !=
3336
old_client_settings[client_name][name])):
3337
client[name] = value
3338
except KeyError:
3339
pass
3340
3341
# Clients who has passed its expire date can still be
3342
# enabled if its last checker was successful. A Client
3343
# whose checker succeeded before we stored its state is
3344
# assumed to have successfully run all checkers during
3345
# downtime.
3346
if client["enabled"]:
3347
if datetime.datetime.utcnow() >= client["expires"]:
3348
if not client["last_checked_ok"]:
3349
logger.warning(
3350
"disabling client {} - Client never "
3351
"performed a successful checker".format(
3352
client_name))
3353
client["enabled"] = False
3354
elif client["last_checker_status"] != 0:
3355
logger.warning(
3356
"disabling client {} - Client last"
3357
" checker failed with error code"
3358
" {}".format(
3359
client_name,
3360
client["last_checker_status"]))
3361
client["enabled"] = False
3362
else:
3363
client["expires"] = (
3364
datetime.datetime.utcnow()
3365
+ client["timeout"])
3366
logger.debug("Last checker succeeded,"
3367
" keeping {} enabled".format(
3368
client_name))
2039
client_class = functools.partial(ClientDBusTransitional,
2040
bus = bus)
2041
def client_config_items(config, section):
2042
special_settings = {
2043
"approved_by_default":
2044
lambda: config.getboolean(section,
2045
"approved_by_default"),
2046
}
2047
for name, value in config.items(section):
3369
2048
try:
3370
client["secret"] = pgp.decrypt(
3371
client["encrypted_secret"],
3372
client_settings[client_name]["secret"])
3373
except PGPError:
3374
# If decryption fails, we use secret from new settings
3375
logger.debug("Failed to decrypt {} old secret".format(
3376
client_name))
3377
client["secret"] = (client_settings[client_name]
3378
["secret"])
3379
3380
# Add/remove clients based on new changes made to config
3381
for client_name in (set(old_client_settings)
3382
- set(client_settings)):
3383
del clients_data[client_name]
3384
for client_name in (set(client_settings)
3385
- set(old_client_settings)):
3386
clients_data[client_name] = client_settings[client_name]
3387
3388
# Create all client objects
3389
for client_name, client in clients_data.items():
3390
tcp_server.clients[client_name] = client_class(
3391
name=client_name,
3392
settings=client,
3393
server_settings=server_settings)
3394
2049
yield (name, special_settings[name]())
2050
except KeyError:
2051
yield (name, value)
2052
2053
tcp_server.clients.update(set(
2054
client_class(name = section,
2055
config= dict(client_config_items(
2056
client_config, section)))
2057
for section in client_config.sections()))
3395
2058
if not tcp_server.clients:
3396
2059
logger.warning("No clients defined")
3397
3398
if not foreground:
3399
if pidfile is not None:
3400
pid = os.getpid()
3401
try:
3402
with pidfile:
3403
print(pid, file=pidfile)
3404
except IOError:
3405
logger.error("Could not write to file %r with PID %d",
3406
pidfilename, pid)
3407
del pidfile
2060
2061
if not debug:
2062
try:
2063
with pidfile:
2064
pid = os.getpid()
2065
pidfile.write(str(pid) + "\n".encode("utf-8"))
2066
del pidfile
2067
except IOError:
2068
logger.error("Could not write to file %r with PID %d",
2069
pidfilename, pid)
2070
except NameError:
2071
# "pidfile" was never created
2072
pass
3408
2073
del pidfilename
3409
3410
for termsig in (signal.SIGHUP, signal.SIGTERM):
3411
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3412
lambda: main_loop.quit() and False)
3413
2074
2075
signal.signal(signal.SIGINT, signal.SIG_IGN)
2076
2077
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2078
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2079
3414
2080
if use_dbus:
3415
3416
@alternate_dbus_interfaces(
3417
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3418
class MandosDBusService(DBusObjectWithObjectManager):
2081
class MandosDBusService(dbus.service.Object):
3419
2082
"""A D-Bus proxy object"""
3420
3421
2083
def __init__(self):
3422
2084
dbus.service.Object.__init__(self, bus, "/")
3423
3424
2085
_interface = "se.recompile.Mandos"
3425
2086
3426
2087
@dbus.service.signal(_interface, signature="o")
3427
2088
def ClientAdded(self, objpath):
3428
2089
"D-Bus signal"
3429
2090
pass
3430
2091
3431
2092
@dbus.service.signal(_interface, signature="ss")
3432
def ClientNotFound(self, key_id, address):
2093
def ClientNotFound(self, fingerprint, address):
3433
2094
"D-Bus signal"
3434
2095
pass
3435
3436
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3437
"true"})
2096
3438
2097
@dbus.service.signal(_interface, signature="os")
3439
2098
def ClientRemoved(self, objpath, name):
3440
2099
"D-Bus signal"
3441
2100
pass
3442
3443
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3444
"true"})
2101
3445
2102
@dbus.service.method(_interface, out_signature="ao")
3446
2103
def GetAllClients(self):
3447
2104
"D-Bus method"
3448
return dbus.Array(c.dbus_object_path for c in
3449
tcp_server.clients.values())
3450
3451
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3452
"true"})
2105
return dbus.Array(c.dbus_object_path
2106
for c in tcp_server.clients)
2107
3453
2108
@dbus.service.method(_interface,
3454
2109
out_signature="a{oa{sv}}")
3455
2110
def GetAllClientsWithProperties(self):
3456
2111
"D-Bus method"
3457
2112
return dbus.Dictionary(
3458
{c.dbus_object_path: c.GetAll(
3459
"se.recompile.Mandos.Client")
3460
for c in tcp_server.clients.values()},
2113
((c.dbus_object_path, c.GetAll(""))
2114
for c in tcp_server.clients),
3461
2115
signature="oa{sv}")
3462
2116
3463
2117
@dbus.service.method(_interface, in_signature="o")
3464
2118
def RemoveClient(self, object_path):
3465
2119
"D-Bus method"
3466
for c in tcp_server.clients.values():
2120
for c in tcp_server.clients:
3467
2121
if c.dbus_object_path == object_path:
3468
del tcp_server.clients[c.name]
2122
tcp_server.clients.remove(c)
3469
2123
c.remove_from_connection()
3470
# Don't signal the disabling
2124
# Don't signal anything except ClientRemoved
3471
2125
c.disable(quiet=True)
3472
# Emit D-Bus signal for removal
3473
self.client_removed_signal(c)
2126
# Emit D-Bus signal
2127
self.ClientRemoved(object_path, c.name)
3474
2128
return
3475
2129
raise KeyError(object_path)
3476
2130
3477
2131
del _interface
3478
3479
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3480
out_signature="a{oa{sa{sv}}}")
3481
def GetManagedObjects(self):
3482
"""D-Bus method"""
3483
return dbus.Dictionary(
3484
{client.dbus_object_path:
3485
dbus.Dictionary(
3486
{interface: client.GetAll(interface)
3487
for interface in
3488
client._get_all_interface_names()})
3489
for client in tcp_server.clients.values()})
3490
3491
def client_added_signal(self, client):
3492
"""Send the new standard signal and the old signal"""
3493
if use_dbus:
3494
# New standard signal
3495
self.InterfacesAdded(
3496
client.dbus_object_path,
3497
dbus.Dictionary(
3498
{interface: client.GetAll(interface)
3499
for interface in
3500
client._get_all_interface_names()}))
3501
# Old signal
3502
self.ClientAdded(client.dbus_object_path)
3503
3504
def client_removed_signal(self, client):
3505
"""Send the new standard signal and the old signal"""
3506
if use_dbus:
3507
# New standard signal
3508
self.InterfacesRemoved(
3509
client.dbus_object_path,
3510
client._get_all_interface_names())
3511
# Old signal
3512
self.ClientRemoved(client.dbus_object_path,
3513
client.name)
3514
3515
mandos_dbus_service = MandosDBusService()
3516
3517
# Save modules to variables to exempt the modules from being
3518
# unloaded before the function registered with atexit() is run.
3519
mp = multiprocessing
3520
wn = wnull
3521
2132
2133
class MandosDBusServiceTransitional(MandosDBusService):
2134
__metaclass__ = AlternateDBusNamesMetaclass
2135
mandos_dbus_service = MandosDBusServiceTransitional()
2136
3522
2137
def cleanup():
3523
2138
"Cleanup function; run on exit"
3524
if zeroconf:
3525
service.cleanup()
3526
3527
mp.active_children()
3528
wn.close()
3529
if not (tcp_server.clients or client_settings):
3530
return
3531
3532
# Store client before exiting. Secrets are encrypted with key
3533
# based on what config file has. If config file is
3534
# removed/edited, old secret will thus be unrecovable.
3535
clients = {}
3536
with PGPEngine() as pgp:
3537
for client in tcp_server.clients.values():
3538
key = client_settings[client.name]["secret"]
3539
client.encrypted_secret = pgp.encrypt(client.secret,
3540
key)
3541
client_dict = {}
3542
3543
# A list of attributes that can not be pickled
3544
# + secret.
3545
exclude = {"bus", "changedstate", "secret",
3546
"checker", "server_settings"}
3547
for name, typ in inspect.getmembers(dbus.service
3548
.Object):
3549
exclude.add(name)
3550
3551
client_dict["encrypted_secret"] = (client
3552
.encrypted_secret)
3553
for attr in client.client_structure:
3554
if attr not in exclude:
3555
client_dict[attr] = getattr(client, attr)
3556
3557
clients[client.name] = client_dict
3558
del client_settings[client.name]["secret"]
3559
3560
try:
3561
with tempfile.NamedTemporaryFile(
3562
mode='wb',
3563
suffix=".pickle",
3564
prefix='clients-',
3565
dir=os.path.dirname(stored_state_path),
3566
delete=False) as stored_state:
3567
pickle.dump((clients, client_settings), stored_state,
3568
protocol=2)
3569
tempname = stored_state.name
3570
os.rename(tempname, stored_state_path)
3571
except (IOError, OSError) as e:
3572
if not debug:
3573
try:
3574
os.remove(tempname)
3575
except NameError:
3576
pass
3577
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3578
logger.warning("Could not save persistent state: {}"
3579
.format(os.strerror(e.errno)))
3580
else:
3581
logger.warning("Could not save persistent state:",
3582
exc_info=e)
3583
raise
3584
3585
# Delete all clients, and settings from config
2139
service.cleanup()
2140
2141
multiprocessing.active_children()
3586
2142
while tcp_server.clients:
3587
name, client = tcp_server.clients.popitem()
2143
client = tcp_server.clients.pop()
3588
2144
if use_dbus:
3589
2145
client.remove_from_connection()
3590
# Don't signal the disabling
2146
client.disable_hook = None
2147
# Don't signal anything except ClientRemoved
3591
2148
client.disable(quiet=True)
3592
# Emit D-Bus signal for removal
3593
2149
if use_dbus:
3594
mandos_dbus_service.client_removed_signal(client)
3595
client_settings.clear()
3596
2150
# Emit D-Bus signal
2151
mandos_dbus_service.ClientRemoved(client
2152
.dbus_object_path,
2153
client.name)
2154
3597
2155
atexit.register(cleanup)
3598
3599
for client in tcp_server.clients.values():
2156
2157
for client in tcp_server.clients:
3600
2158
if use_dbus:
3601
# Emit D-Bus signal for adding
3602
mandos_dbus_service.client_added_signal(client)
3603
# Need to initiate checking of clients
3604
if client.enabled:
3605
client.init_checker()
3606
2159
# Emit D-Bus signal
2160
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2161
client.enable()
2162
3607
2163
tcp_server.enable()
3608
2164
tcp_server.server_activate()
3609
2165
3610
2166
# Find out what port we got
3611
if zeroconf:
3612
service.port = tcp_server.socket.getsockname()[1]
2167
service.port = tcp_server.socket.getsockname()[1]
3613
2168
if use_ipv6:
3614
2169
logger.info("Now listening on address %r, port %d,"
3615
" flowinfo %d, scope_id %d",
3616
*tcp_server.socket.getsockname())
2170
" flowinfo %d, scope_id %d"
2171
% tcp_server.socket.getsockname())
3617
2172
else: # IPv4
3618
logger.info("Now listening on address %r, port %d",
3619
*tcp_server.socket.getsockname())
3620
3621
# service.interface = tcp_server.socket.getsockname()[3]
3622
2173
logger.info("Now listening on address %r, port %d"
2174
% tcp_server.socket.getsockname())
2175
2176
#service.interface = tcp_server.socket.getsockname()[3]
2177
3623
2178
try:
3624
if zeroconf:
3625
# From the Avahi example code
3626
try:
3627
service.activate()
3628
except dbus.exceptions.DBusException as error:
3629
logger.critical("D-Bus Exception", exc_info=error)
3630
cleanup()
3631
sys.exit(1)
3632
# End of Avahi example code
3633
3634
GLib.io_add_watch(
3635
GLib.IOChannel.unix_new(tcp_server.fileno()),
3636
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
3637
lambda *args, **kwargs: (tcp_server.handle_request
3638
(*args[2:], **kwargs) or True))
3639
2179
# From the Avahi example code
2180
try:
2181
service.activate()
2182
except dbus.exceptions.DBusException as error:
2183
logger.critical("DBusException: %s", error)
2184
cleanup()
2185
sys.exit(1)
2186
# End of Avahi example code
2187
2188
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2189
lambda *args, **kwargs:
2190
(tcp_server.handle_request
2191
(*args[2:], **kwargs) or True))
2192
3640
2193
logger.debug("Starting main loop")
3641
2194
main_loop.run()
3642
2195
except AvahiError as error:
3643
logger.critical("Avahi Error", exc_info=error)
2196
logger.critical("AvahiError: %s", error)
3644
2197
cleanup()
3645
2198
sys.exit(1)
3646
2199
except KeyboardInterrupt:
3651
2204
# Must run before the D-Bus bus name gets deregistered
3652
2205
cleanup()
3653
2206
3654
3655
def should_only_run_tests():
3656
parser = argparse.ArgumentParser(add_help=False)
3657
parser.add_argument("--check", action='store_true')
3658
args, unknown_args = parser.parse_known_args()
3659
run_tests = args.check
3660
if run_tests:
3661
# Remove --check argument from sys.argv
3662
sys.argv[1:] = unknown_args
3663
return run_tests
3664
3665
# Add all tests from doctest strings
3666
def load_tests(loader, tests, none):
3667
import doctest
3668
tests.addTests(doctest.DocTestSuite())
3669
return tests
3670
2207
3671
2208
if __name__ == '__main__':
3672
try:
3673
if should_only_run_tests():
3674
# Call using ./mandos --check [--verbose]
3675
unittest.main()
3676
else:
3677
main()
3678
finally:
3679
logging.shutdown()
2209
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0