To get this branch, use:
bzr branch
http://bzr.recompile.se/loggerhead/mandos/trunk
« back to all changes in this revision
Viewing changes to mandos
- browse files at revision 1221
- compare with another revision
- download diff
- download tarball
- view history from revision 1221
- Committer: teddy at recompile
- Date: 2020-11-29 21:54:00 UTC
- Revision ID: teddy@recompile.se-20201129215400-1zkzmiadisa8whx2
Change URL of systemd "Password Agents" specification
The URL of the systemd "Password Agents" specification changed from
<https://www.freedesktop.org/wiki/Software/systemd/PasswordAgents> to
<https://systemd.io/PASSWORD_AGENTS/>.
* dracut-module/password-agent.c: Change URL in code comments.
* dracut-module/password-agent.xml: Change URL.
* intro.xml (SYSTEMD): - '' -
The URL of the systemd "Password Agents" specification changed from
<https://www.freedesktop.org/wiki/Software/systemd/PasswordAgents> to
<https://systemd.io/PASSWORD_AGENTS/>.
* dracut-module/password-agent.c: Change URL in code comments.
* dracut-module/password-agent.xml: Change URL.
* intro.xml (SYSTEMD): - '' -
- files added:
- DBUS-API
- debian/source
- debian/tests
- debian/upstream
- dracut-module
- network-hooks.d
- plugin-helpers
- files removed:
- initramfs-tools-hook-conf
- files modified:
- .bzrignore
added
removed
mandos
1
#!/usr/bin/python
2
# -*- mode: python; coding: utf-8 -*-
3
#
1
#!/usr/bin/python3 -bI
2
# -*- mode: python; after-save-hook: (lambda () (let ((command (if (fboundp 'file-local-name) (file-local-name (buffer-file-name)) (or (file-remote-p (buffer-file-name) 'localname) (buffer-file-name))))) (if (= (progn (if (get-buffer "*Test*") (kill-buffer "*Test*")) (process-file-shell-command (format "%s --check" (shell-quote-argument command)) nil "*Test*")) 0) (let ((w (get-buffer-window "*Test*"))) (if w (delete-window w))) (progn (with-current-buffer "*Test*" (compilation-mode)) (display-buffer "*Test*" '(display-buffer-in-side-window)))))); coding: utf-8 -*-
3
#
4
4
# Mandos server - give out binary blobs to connecting clients.
5
#
5
#
6
6
# This program is partly derived from an example program for an Avahi
7
7
# service publisher, downloaded from
8
8
# <http://avahi.org/wiki/PythonPublishExample>. This includes the
9
# methods "add" and "remove" in the "AvahiService" class, the
10
# "server_state_changed" and "entry_group_state_changed" functions,
11
# and some lines in "main".
12
#
9
# methods "add", "remove", "server_state_changed",
10
# "entry_group_state_changed", "cleanup", and "activate" in the
11
# "AvahiService" class, and some lines in "main".
12
#
13
13
# Everything else is
14
# Copyright © 2008,2009 Teddy Hogeborn
15
# Copyright © 2008,2009 Björn Påhlsson
16
#
17
# This program is free software: you can redistribute it and/or modify
18
# it under the terms of the GNU General Public License as published by
14
# Copyright © 2008-2020 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
19
21
# the Free Software Foundation, either version 3 of the License, or
20
22
# (at your option) any later version.
21
23
#
22
# This program is distributed in the hope that it will be useful,
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
24
# Mandos is distributed in the hope that it will be useful, but
25
# WITHOUT ANY WARRANTY; without even the implied warranty of
24
26
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25
27
# GNU General Public License for more details.
26
#
28
#
27
29
# You should have received a copy of the GNU General Public License
28
# along with this program. If not, see
29
# <http://www.gnu.org/licenses/>.
30
#
31
# Contact the authors at <mandos@fukt.bsnet.se>.
32
#
33
34
from __future__ import division, with_statement, absolute_import
35
36
import SocketServer
30
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
31
#
32
# Contact the authors at <mandos@recompile.se>.
33
#
34
35
from __future__ import (division, absolute_import, print_function,
36
unicode_literals)
37
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
47
import socket
38
import optparse
48
import argparse
39
49
import datetime
40
50
import errno
41
import gnutls.crypto
42
import gnutls.connection
43
import gnutls.errors
44
import gnutls.library.functions
45
import gnutls.library.constants
46
import gnutls.library.types
47
import ConfigParser
51
try:
52
import ConfigParser as configparser
53
except ImportError:
54
import configparser
48
55
import sys
49
56
import re
50
57
import os
51
58
import signal
52
from sets import Set
53
59
import subprocess
54
60
import atexit
55
61
import stat
56
62
import logging
57
63
import logging.handlers
58
64
import pwd
59
from contextlib import closing
65
import contextlib
66
import struct
67
import fcntl
68
import functools
69
try:
70
import cPickle as pickle
71
except ImportError:
72
import pickle
73
import multiprocessing
74
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
60
83
61
84
import dbus
62
85
import dbus.service
63
import gobject
64
import avahi
86
import gi
87
from gi.repository import GLib
65
88
from dbus.mainloop.glib import DBusGMainLoop
66
89
import ctypes
67
90
import ctypes.util
68
69
version = "1.0.6"
70
71
logger = logging.Logger('mandos')
72
syslogger = (logging.handlers.SysLogHandler
73
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
74
address = "/dev/log"))
75
syslogger.setFormatter(logging.Formatter
76
('Mandos [%(process)d]: %(levelname)s:'
77
' %(message)s'))
78
logger.addHandler(syslogger)
79
80
console = logging.StreamHandler()
81
console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'
82
' %(levelname)s: %(message)s'))
83
logger.addHandler(console)
91
import xml.dom.minidom
92
import inspect
93
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:
122
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
123
except AttributeError:
124
try:
125
# This is where SO_BINDTODEVICE was up to and including Python
126
# 2.6, and also 3.2:
127
from IN import SO_BINDTODEVICE
128
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 = "1.8.12"
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
84
331
85
332
class AvahiError(Exception):
86
333
def __init__(self, value, *args, **kwargs):
87
334
self.value = value
88
super(AvahiError, self).__init__(value, *args, **kwargs)
89
def __unicode__(self):
90
return unicode(repr(self.value))
335
return super(AvahiError, self).__init__(value, *args,
336
**kwargs)
337
91
338
92
339
class AvahiServiceError(AvahiError):
93
340
pass
94
341
342
95
343
class AvahiGroupError(AvahiError):
96
344
pass
97
345
98
346
99
class AvahiService(object):
347
class AvahiService:
100
348
"""An Avahi (Zeroconf) service.
349
101
350
Attributes:
102
351
interface: integer; avahi.IF_UNSPEC or an interface index.
103
352
Used to optionally bind to the specified interface.
104
353
name: string; Example: 'Mandos'
105
354
type: string; Example: '_mandos._tcp'.
106
See <http://www.dns-sd.org/ServiceTypes.html>
355
See <https://www.iana.org/assignments/service-names-port-numbers>
107
356
port: integer; what port to announce
108
357
TXT: list of strings; TXT record for the service
109
358
domain: string; Domain to publish on, default to .local if empty.
111
360
max_renames: integer; maximum number of renames
112
361
rename_count: integer; counter so we only rename after collisions
113
362
a sensible number of times
363
group: D-Bus Entry Group
364
server: D-Bus Server
365
bus: dbus.SystemBus()
114
366
"""
115
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
116
servicetype = None, port = None, TXT = None,
117
domain = "", host = "", max_renames = 32768,
118
protocol = avahi.PROTO_UNSPEC):
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):
119
379
self.interface = interface
120
380
self.name = name
121
381
self.type = servicetype
126
386
self.rename_count = 0
127
387
self.max_renames = max_renames
128
388
self.protocol = protocol
129
def rename(self):
389
self.group = None # our entry group
390
self.server = None
391
self.bus = bus
392
self.entry_group_state_changed_match = None
393
394
def rename(self, remove=True):
130
395
"""Derived from the Avahi example code"""
131
396
if self.rename_count >= self.max_renames:
132
logger.critical(u"No suitable Zeroconf service name found"
133
u" after %i retries, exiting.",
397
logger.critical("No suitable Zeroconf service name found"
398
" after %i retries, exiting.",
134
399
self.rename_count)
135
raise AvahiServiceError(u"Too many renames")
136
self.name = server.GetAlternativeServiceName(self.name)
137
logger.info(u"Changing Zeroconf service name to %r ...",
138
str(self.name))
139
syslogger.setFormatter(logging.Formatter
140
('Mandos (%s): %%(levelname)s:'
141
' %%(message)s' % self.name))
142
self.remove()
143
self.add()
400
raise AvahiServiceError("Too many renames")
401
self.name = str(
402
self.server.GetAlternativeServiceName(self.name))
144
403
self.rename_count += 1
404
logger.info("Changing Zeroconf service name to %r ...",
405
self.name)
406
if remove:
407
self.remove()
408
try:
409
self.add()
410
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
145
420
def remove(self):
146
421
"""Derived from the Avahi example code"""
147
if group is not None:
148
group.Reset()
422
if self.entry_group_state_changed_match is not None:
423
self.entry_group_state_changed_match.remove()
424
self.entry_group_state_changed_match = None
425
if self.group is not None:
426
self.group.Reset()
427
149
428
def add(self):
150
429
"""Derived from the Avahi example code"""
151
global group
152
if group is None:
153
group = dbus.Interface(bus.get_object
154
(avahi.DBUS_NAME,
155
server.EntryGroupNew()),
156
avahi.DBUS_INTERFACE_ENTRY_GROUP)
157
group.connect_to_signal('StateChanged',
158
entry_group_state_changed)
159
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
160
service.name, service.type)
161
group.AddService(
162
self.interface, # interface
163
self.protocol, # protocol
164
dbus.UInt32(0), # flags
165
self.name, self.type,
166
self.domain, self.host,
167
dbus.UInt16(self.port),
168
avahi.string_array_to_txt_array(self.TXT))
169
group.Commit()
170
171
# From the Avahi example code:
172
group = None # our entry group
173
# End of Avahi example code
174
175
176
def _datetime_to_dbus(dt, variant_level=0):
177
"""Convert a UTC datetime.datetime() to a D-Bus type."""
178
return dbus.String(dt.isoformat(), variant_level=variant_level)
179
180
181
class Client(dbus.service.Object):
430
self.remove()
431
if self.group is None:
432
self.group = dbus.Interface(
433
self.bus.get_object(avahi.DBUS_NAME,
434
self.server.EntryGroupNew()),
435
avahi.DBUS_INTERFACE_ENTRY_GROUP)
436
self.entry_group_state_changed_match = (
437
self.group.connect_to_signal(
438
'StateChanged', self.entry_group_state_changed))
439
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
440
self.name, self.type)
441
self.group.AddService(
442
self.interface,
443
self.protocol,
444
dbus.UInt32(0), # flags
445
self.name, self.type,
446
self.domain, self.host,
447
dbus.UInt16(self.port),
448
avahi.string_array_to_txt_array(self.TXT))
449
self.group.Commit()
450
451
def entry_group_state_changed(self, state, error):
452
"""Derived from the Avahi example code"""
453
logger.debug("Avahi entry group state change: %i", state)
454
455
if state == avahi.ENTRY_GROUP_ESTABLISHED:
456
logger.debug("Zeroconf service established.")
457
elif state == avahi.ENTRY_GROUP_COLLISION:
458
logger.info("Zeroconf service name collision.")
459
self.rename()
460
elif state == avahi.ENTRY_GROUP_FAILURE:
461
logger.critical("Avahi: Error in group state changed %s",
462
str(error))
463
raise AvahiGroupError("State changed: {!s}".format(error))
464
465
def cleanup(self):
466
"""Derived from the Avahi example code"""
467
if self.group is not None:
468
try:
469
self.group.Free()
470
except (dbus.exceptions.UnknownMethodException,
471
dbus.exceptions.DBusException):
472
pass
473
self.group = None
474
self.remove()
475
476
def server_state_changed(self, state, error=None):
477
"""Derived from the Avahi example code"""
478
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
}
485
if state in bad_states:
486
if bad_states[state] is not None:
487
if error is None:
488
logger.error(bad_states[state])
489
else:
490
logger.error(bad_states[state] + ": %r", error)
491
self.cleanup()
492
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)
505
else:
506
if error is None:
507
logger.debug("Unknown state: %r", state)
508
else:
509
logger.debug("Unknown state: %r: %r", state, error)
510
511
def activate(self):
512
"""Derived from the Avahi example code"""
513
if self.server is None:
514
self.server = dbus.Interface(
515
self.bus.get_object(avahi.DBUS_NAME,
516
avahi.DBUS_PATH_SERVER,
517
follow_name_owner_changes=True),
518
avahi.DBUS_INTERFACE_SERVER)
519
self.server.connect_to_signal("StateChanged",
520
self.server_state_changed)
521
self.server_state_changed(self.server.GetState())
522
523
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:
182
854
"""A representation of a client host served by this server.
855
183
856
Attributes:
857
approved: bool(); 'None' if not yet approved/disapproved
858
approval_delay: datetime.timedelta(); Time to wait for approval
859
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
864
checker_command: string; External command which is run to check
865
if client lives. %() expansions are done at
866
runtime with vars(self) as dict, so that for
867
instance %(name)s can be used in the command.
868
checker_initiator_tag: a GLib event source tag, or None
869
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
current_checker_command: string; current running checker_command
873
disable_initiator_tag: a GLib event source tag, or None
874
enabled: bool()
875
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
879
host: string; available for use by the checker command
880
interval: datetime.timedelta(); How often to start a new checker
881
last_approval_request: datetime.datetime(); (UTC) or None
882
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
184
889
name: string; from the config file, used in log messages and
185
890
D-Bus identifiers
186
fingerprint: string (40 or 32 hexadecimal digits); used to
187
uniquely identify the client
188
891
secret: bytestring; sent verbatim (over TLS) to client
189
host: string; available for use by the checker command
190
created: datetime.datetime(); (UTC) object creation
191
last_enabled: datetime.datetime(); (UTC)
192
enabled: bool()
193
last_checked_ok: datetime.datetime(); (UTC) or None
194
892
timeout: datetime.timedelta(); How long from last_checked_ok
195
until this client is invalid
196
interval: datetime.timedelta(); How often to start a new checker
197
disable_hook: If set, called by disable() as disable_hook(self)
198
checker: subprocess.Popen(); a running checker process used
199
to see if the client lives.
200
'None' if no process is running.
201
checker_initiator_tag: a gobject event source tag, or None
202
disable_initiator_tag: - '' -
203
checker_callback_tag: - '' -
204
checker_command: string; External command which is run to check if
205
client lives. %() expansions are done at
206
runtime with vars(self) as dict, so that for
207
instance %(name)s can be used in the command.
208
current_checker_command: string; current running checker_command
209
use_dbus: bool(); Whether to provide D-Bus interface and signals
210
dbus_object_path: dbus.ObjectPath ; only set if self.use_dbus
893
until this client is disabled
894
extended_timeout: extra long timeout when secret has been sent
895
runtime_expansions: Allowed attributes for runtime expansion.
896
expires: datetime.datetime(); time (UTC) when a client will be
897
disabled, or None
898
server_settings: The server_settings dict from main()
211
899
"""
212
def timeout_milliseconds(self):
213
"Return the 'timeout' attribute in milliseconds"
214
return ((self.timeout.days * 24 * 60 * 60 * 1000)
215
+ (self.timeout.seconds * 1000)
216
+ (self.timeout.microseconds // 1000))
217
218
def interval_milliseconds(self):
219
"Return the 'interval' attribute in milliseconds"
220
return ((self.interval.days * 24 * 60 * 60 * 1000)
221
+ (self.interval.seconds * 1000)
222
+ (self.interval.microseconds // 1000))
223
224
def __init__(self, name = None, disable_hook=None, config=None,
225
use_dbus=True):
226
"""Note: the 'checker' key in 'config' sets the
227
'checker_command' attribute and *not* the 'checker'
228
attribute."""
900
901
runtime_expansions = ("approval_delay", "approval_duration",
902
"created", "enabled", "expires", "key_id",
903
"fingerprint", "host", "interval",
904
"last_approval_request", "last_checked_ok",
905
"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):
229
973
self.name = name
230
if config is None:
231
config = {}
232
logger.debug(u"Creating client %r", self.name)
233
self.use_dbus = False # During __init__
234
# Uppercase and remove spaces from fingerprint for later
235
# comparison purposes with return value from the fingerprint()
236
# function
237
self.fingerprint = (config["fingerprint"].upper()
238
.replace(u" ", u""))
239
logger.debug(u" Fingerprint: %s", self.fingerprint)
240
if "secret" in config:
241
self.secret = config["secret"].decode(u"base64")
242
elif "secfile" in config:
243
with closing(open(os.path.expanduser
244
(os.path.expandvars
245
(config["secfile"])))) as secfile:
246
self.secret = secfile.read()
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)
247
987
else:
248
raise TypeError(u"No secret or secfile for client %s"
249
% self.name)
250
self.host = config.get("host", "")
251
self.created = datetime.datetime.utcnow()
252
self.enabled = False
253
self.last_enabled = None
254
self.last_checked_ok = None
255
self.timeout = string_to_delta(config["timeout"])
256
self.interval = string_to_delta(config["interval"])
257
self.disable_hook = disable_hook
988
self.last_enabled = None
989
self.expires = None
990
991
logger.debug("Creating client %r", self.name)
992
logger.debug(" Key ID: %s", self.key_id)
993
logger.debug(" Fingerprint: %s", self.fingerprint)
994
self.created = settings.get("created",
995
datetime.datetime.utcnow())
996
997
# attributes specific for this server instance
258
998
self.checker = None
259
999
self.checker_initiator_tag = None
260
1000
self.disable_initiator_tag = None
261
1001
self.checker_callback_tag = None
262
self.checker_command = config["checker"]
263
1002
self.current_checker_command = None
264
self.last_connect = None
265
# Only now, when this client is initialized, can it show up on
266
# the D-Bus
267
self.use_dbus = use_dbus
268
if self.use_dbus:
269
self.dbus_object_path = (dbus.ObjectPath
270
("/clients/"
271
+ self.name.replace(".", "_")))
272
dbus.service.Object.__init__(self, bus,
273
self.dbus_object_path)
274
1003
self.approved = None
1004
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
1018
def send_changedstate(self):
1019
with self.changedstate:
1020
self.changedstate.notify_all()
1021
275
1022
def enable(self):
276
1023
"""Start this client's checker and timeout hooks"""
1024
if getattr(self, "enabled", False):
1025
# Already enabled
1026
return
1027
self.expires = datetime.datetime.utcnow() + self.timeout
1028
self.enabled = True
277
1029
self.last_enabled = datetime.datetime.utcnow()
1030
self.init_checker()
1031
self.send_changedstate()
1032
1033
def disable(self, quiet=True):
1034
"""Disable this client."""
1035
if not getattr(self, "enabled", False):
1036
return False
1037
if not quiet:
1038
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)
1041
self.disable_initiator_tag = None
1042
self.expires = None
1043
if getattr(self, "checker_initiator_tag", None) is not None:
1044
GLib.source_remove(self.checker_initiator_tag)
1045
self.checker_initiator_tag = None
1046
self.stop_checker()
1047
self.enabled = False
1048
if not quiet:
1049
self.send_changedstate()
1050
# Do not run this again if called by a GLib.timeout_add
1051
return False
1052
1053
def __del__(self):
1054
self.disable()
1055
1056
def init_checker(self):
278
1057
# Schedule a new checker to be started an 'interval' from now,
279
1058
# and every interval from then on.
280
self.checker_initiator_tag = (gobject.timeout_add
281
(self.interval_milliseconds(),
282
self.start_checker))
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)
283
1070
# Also start a new checker *right now*.
284
1071
self.start_checker()
285
# Schedule a disable() when 'timeout' has passed
286
self.disable_initiator_tag = (gobject.timeout_add
287
(self.timeout_milliseconds(),
288
self.disable))
289
self.enabled = True
290
if self.use_dbus:
291
# Emit D-Bus signals
292
self.PropertyChanged(dbus.String(u"enabled"),
293
dbus.Boolean(True, variant_level=1))
294
self.PropertyChanged(dbus.String(u"last_enabled"),
295
(_datetime_to_dbus(self.last_enabled,
296
variant_level=1)))
297
298
def disable(self):
299
"""Disable this client."""
300
if not getattr(self, "enabled", False):
301
return False
302
logger.info(u"Disabling client %s", self.name)
303
if getattr(self, "disable_initiator_tag", False):
304
gobject.source_remove(self.disable_initiator_tag)
305
self.disable_initiator_tag = None
306
if getattr(self, "checker_initiator_tag", False):
307
gobject.source_remove(self.checker_initiator_tag)
308
self.checker_initiator_tag = None
309
self.stop_checker()
310
if self.disable_hook:
311
self.disable_hook(self)
312
self.enabled = False
313
if self.use_dbus:
314
# Emit D-Bus signal
315
self.PropertyChanged(dbus.String(u"enabled"),
316
dbus.Boolean(False, variant_level=1))
317
# Do not run this again if called by a gobject.timeout_add
318
return False
319
320
def __del__(self):
321
self.disable_hook = None
322
self.disable()
323
324
def checker_callback(self, pid, condition, command):
1072
1073
def checker_callback(self, source, condition, connection,
1074
command):
325
1075
"""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()
326
1081
self.checker_callback_tag = None
327
1082
self.checker = None
328
if self.use_dbus:
329
# Emit D-Bus signal
330
self.PropertyChanged(dbus.String(u"checker_running"),
331
dbus.Boolean(False, variant_level=1))
332
if os.WIFEXITED(condition):
333
exitstatus = os.WEXITSTATUS(condition)
334
if exitstatus == 0:
335
logger.info(u"Checker for %(name)s succeeded",
1083
1084
if returncode >= 0:
1085
self.last_checker_status = returncode
1086
self.last_checker_signal = None
1087
if self.last_checker_status == 0:
1088
logger.info("Checker for %(name)s succeeded",
336
1089
vars(self))
337
1090
self.checked_ok()
338
1091
else:
339
logger.info(u"Checker for %(name)s failed",
340
vars(self))
341
if self.use_dbus:
342
# Emit D-Bus signal
343
self.CheckerCompleted(dbus.Int16(exitstatus),
344
dbus.Int64(condition),
345
dbus.String(command))
1092
logger.info("Checker for %(name)s failed", vars(self))
346
1093
else:
347
logger.warning(u"Checker for %(name)s crashed?",
1094
self.last_checker_status = -1
1095
self.last_checker_signal = -returncode
1096
logger.warning("Checker for %(name)s crashed?",
348
1097
vars(self))
349
if self.use_dbus:
350
# Emit D-Bus signal
351
self.CheckerCompleted(dbus.Int16(-1),
352
dbus.Int64(condition),
353
dbus.String(command))
354
1098
return False
1099
355
1100
def checked_ok(self):
356
"""Bump up the timeout for this client.
357
This should only be called when the client has been seen,
358
alive and well.
359
"""
1101
"""Assert that the client has been seen, alive and well."""
360
1102
self.last_checked_ok = datetime.datetime.utcnow()
361
gobject.source_remove(self.disable_initiator_tag)
362
self.disable_initiator_tag = (gobject.timeout_add
363
(self.timeout_milliseconds(),
364
self.disable))
365
if self.use_dbus:
366
# Emit D-Bus signal
367
self.PropertyChanged(
368
dbus.String(u"last_checked_ok"),
369
(_datetime_to_dbus(self.last_checked_ok,
370
variant_level=1)))
371
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."""
1109
if timeout is None:
1110
timeout = self.timeout
1111
if self.disable_initiator_tag is not None:
1112
GLib.source_remove(self.disable_initiator_tag)
1113
self.disable_initiator_tag = None
1114
if getattr(self, "enabled", False):
1115
self.disable_initiator_tag = GLib.timeout_add(
1116
int(timeout.total_seconds() * 1000), self.disable)
1117
self.expires = datetime.datetime.utcnow() + timeout
1118
1119
def need_approval(self):
1120
self.last_approval_request = datetime.datetime.utcnow()
1121
372
1122
def start_checker(self):
373
1123
"""Start a new checker subprocess if one is not running.
1124
374
1125
If a checker already exists, leave it running and do
375
1126
nothing."""
376
1127
# The reason for not killing a running checker is that if we
377
# did that, then if a checker (for some reason) started
378
# running slowly and taking more than 'interval' time, the
379
# client would inevitably timeout, since no checker would get
380
# a chance to run to completion. If we instead leave running
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
381
1132
# checkers alone, the checker would have to take more time
382
# than 'timeout' for the client to be declared invalid, which
383
# is as it should be.
384
385
# If a checker exists, make sure it is not a zombie
386
if self.checker is not None:
387
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
388
if pid:
389
logger.warning("Checker was a zombie")
390
gobject.source_remove(self.checker_callback_tag)
391
self.checker_callback(pid, status,
392
self.current_checker_command)
1133
# than 'timeout' for the client to be disabled, which is as it
1134
# 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
393
1140
# Start a new checker if needed
394
1141
if self.checker is None:
395
try:
396
# In case checker_command has exactly one % operator
397
command = self.checker_command % self.host
398
except TypeError:
399
# Escape attributes for the shell
400
escaped_attrs = dict((key, re.escape(str(val)))
401
for key, val in
402
vars(self).iteritems())
403
try:
404
command = self.checker_command % escaped_attrs
405
except TypeError, error:
406
logger.error(u'Could not format string "%s":'
407
u' %s', self.checker_command, error)
408
return True # Try again later
409
self.current_checker_command = command
410
try:
411
logger.info(u"Starting checker %r for %s",
412
command, self.name)
413
# We don't need to redirect stdout and stderr, since
414
# in normal mode, that is already done by daemon(),
415
# and in debug mode we don't want to. (Stdin is
416
# always replaced by /dev/null.)
417
self.checker = subprocess.Popen(command,
418
close_fds=True,
419
shell=True, cwd="/")
420
if self.use_dbus:
421
# Emit D-Bus signal
422
self.CheckerStarted(command)
423
self.PropertyChanged(
424
dbus.String("checker_running"),
425
dbus.Boolean(True, variant_level=1))
426
self.checker_callback_tag = (gobject.child_watch_add
427
(self.checker.pid,
428
self.checker_callback,
429
data=command))
430
# The checker may have completed before the gobject
431
# watch was added. Check for this.
432
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
433
if pid:
434
gobject.source_remove(self.checker_callback_tag)
435
self.checker_callback(pid, status, command)
436
except OSError, error:
437
logger.error(u"Failed to start subprocess: %s",
438
error)
439
# Re-run this periodically if run by gobject.timeout_add
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
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
1153
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
440
1181
return True
441
1182
442
1183
def stop_checker(self):
443
1184
"""Force the checker process, if any, to stop."""
444
1185
if self.checker_callback_tag:
445
gobject.source_remove(self.checker_callback_tag)
1186
GLib.source_remove(self.checker_callback_tag)
446
1187
self.checker_callback_tag = None
447
1188
if getattr(self, "checker", None) is None:
448
1189
return
449
logger.debug(u"Stopping checker for %(name)s", vars(self))
450
try:
451
os.kill(self.checker.pid, signal.SIGTERM)
452
#os.sleep(0.5)
453
#if self.checker.poll() is None:
454
# os.kill(self.checker.pid, signal.SIGKILL)
455
except OSError, error:
456
if error.errno != errno.ESRCH: # No such process
457
raise
1190
logger.debug("Stopping checker for %(name)s", vars(self))
1191
self.checker.terminate()
458
1192
self.checker = None
459
if self.use_dbus:
460
self.PropertyChanged(dbus.String(u"checker_running"),
461
dbus.Boolean(False, variant_level=1))
462
463
def still_valid(self):
464
"""Has the timeout not yet passed for this client?"""
465
if not getattr(self, "enabled", False):
466
return False
467
now = datetime.datetime.utcnow()
468
if self.last_checked_ok is None:
469
return now < (self.created + self.timeout)
1193
1194
1195
def dbus_service_property(dbus_interface,
1196
signature="v",
1197
access="readwrite",
1198
byte_arrays=False):
1199
"""Decorators for marking methods of a DBusObjectWithProperties to
1200
become properties on the D-Bus.
1201
1202
The decorated method will be called with no arguments by "Get"
1203
and with one argument by "Set".
1204
1205
The parameters, where they are supported, are the same as
1206
dbus.service.method, except there is only "signature", since the
1207
type from Get() and the type sent to Set() is the same.
1208
"""
1209
# Encoding deeply encoded byte arrays is not supported yet by the
1210
# "Set" method, so we fail early here:
1211
if byte_arrays and signature != "ay":
1212
raise ValueError("Byte arrays not supported for non-'ay'"
1213
" signature {!r}".format(signature))
1214
1215
def decorator(func):
1216
func._dbus_is_property = True
1217
func._dbus_interface = dbus_interface
1218
func._dbus_signature = signature
1219
func._dbus_access = access
1220
func._dbus_name = func.__name__
1221
if func._dbus_name.endswith("_dbus_property"):
1222
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
1269
return decorator
1270
1271
1272
class DBusPropertyException(dbus.exceptions.DBusException):
1273
"""A base class for D-Bus property-related exceptions
1274
"""
1275
pass
1276
1277
1278
class DBusPropertyAccessException(DBusPropertyException):
1279
"""A property's access permissions disallows an operation.
1280
"""
1281
pass
1282
1283
1284
class DBusPropertyNotFound(DBusPropertyException):
1285
"""An attempt was made to access a non-existing property.
1286
"""
1287
pass
1288
1289
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):
1380
"""A D-Bus object with properties.
1381
1382
Classes inheriting from this can use the dbus_service_property
1383
decorator to expose methods as D-Bus properties. It exposes the
1384
standard Get(), Set(), and GetAll() methods on the D-Bus.
1385
"""
1386
1387
def _get_dbus_property(self, interface_name, property_name):
1388
"""Returns a bound method if one exists which is a D-Bus
1389
property with the specified name and interface.
1390
"""
1391
for cls in self.__class__.__mro__:
1392
for name, value in inspect.getmembers(
1393
cls, self._is_dbus_thing("property")):
1394
if (value._dbus_name == property_name
1395
and value._dbus_interface == interface_name):
1396
return value.__get__(self)
1397
1398
# 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",
1413
out_signature="v")
1414
def Get(self, interface_name, property_name):
1415
"""Standard D-Bus property Get() method, see D-Bus standard.
1416
"""
1417
prop = self._get_dbus_property(interface_name, property_name)
1418
if prop._dbus_access == "write":
1419
raise DBusPropertyAccessException(property_name)
1420
value = prop()
1421
if not hasattr(value, "variant_level"):
1422
return value
1423
return type(value)(value, variant_level=value.variant_level+1)
1424
1425
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
1426
def Set(self, interface_name, property_name, value):
1427
"""Standard D-Bus property Set() method, see D-Bus standard.
1428
"""
1429
prop = self._get_dbus_property(interface_name, property_name)
1430
if prop._dbus_access == "read":
1431
raise DBusPropertyAccessException(property_name)
1432
if prop._dbus_get_args_options["byte_arrays"]:
1433
# The byte_arrays option is not supported yet on
1434
# signatures other than "ay".
1435
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))
1440
prop(value)
1441
1442
@dbus.service.method(dbus.PROPERTIES_IFACE,
1443
in_signature="s",
1444
out_signature="a{sv}")
1445
def GetAll(self, interface_name):
1446
"""Standard D-Bus property GetAll() method, see D-Bus
1447
standard.
1448
1449
Note: Will not include properties with access="write".
1450
"""
1451
properties = {}
1452
for name, prop in self._get_all_dbus_things("property"):
1453
if (interface_name
1454
and interface_name != prop._dbus_interface):
1455
# Interface non-empty but did not match
1456
continue
1457
# Ignore write-only properties
1458
if prop._dbus_access == "write":
1459
continue
1460
value = prop()
1461
if not hasattr(value, "variant_level"):
1462
properties[name] = value
1463
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
1476
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1477
out_signature="s",
1478
path_keyword='object_path',
1479
connection_keyword='connection')
1480
def Introspect(self, object_path, connection):
1481
"""Overloading of standard D-Bus method.
1482
1483
Inserts property tags and interface annotation tags.
1484
"""
1485
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1486
object_path,
1487
connection)
1488
try:
1489
document = xml.dom.minidom.parseString(xmlstring)
1490
1491
def make_tag(document, name, prop):
1492
e = document.createElement("property")
1493
e.setAttribute("name", name)
1494
e.setAttribute("type", prop._dbus_signature)
1495
e.setAttribute("access", prop._dbus_access)
1496
return e
1497
1498
for if_tag in document.getElementsByTagName("interface"):
1499
# Add property tags
1500
for tag in (make_tag(document, name, prop)
1501
for name, prop
1502
in self._get_all_dbus_things("property")
1503
if prop._dbus_interface
1504
== if_tag.getAttribute("name")):
1505
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
# Add the names to the return values for the
1523
# "org.freedesktop.DBus.Properties" methods
1524
if (if_tag.getAttribute("name")
1525
== "org.freedesktop.DBus.Properties"):
1526
for cn in if_tag.getElementsByTagName("method"):
1527
if cn.getAttribute("name") == "Get":
1528
for arg in cn.getElementsByTagName("arg"):
1529
if (arg.getAttribute("direction")
1530
== "out"):
1531
arg.setAttribute("name", "value")
1532
elif cn.getAttribute("name") == "GetAll":
1533
for arg in cn.getElementsByTagName("arg"):
1534
if (arg.getAttribute("direction")
1535
== "out"):
1536
arg.setAttribute("name", "props")
1537
xmlstring = document.toxml("utf-8")
1538
document.unlink()
1539
except (AttributeError, xml.dom.DOMException,
1540
xml.parsers.expat.ExpatError) as error:
1541
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):
1618
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1619
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).
1646
"""
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):
1655
# Ignore non-D-Bus attributes, and D-Bus attributes
1656
# with the wrong interface name
1657
if (not hasattr(attribute, "_dbus_interface")
1658
or not attribute._dbus_interface.startswith(
1659
orig_interface_name)):
1660
continue
1661
# Create an alternate D-Bus interface name based on
1662
# the current name
1663
alt_interface = attribute._dbus_interface.replace(
1664
orig_interface_name, alt_interface_name)
1665
interface_names.add(alt_interface)
1666
# Is this a D-Bus signal?
1667
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(
1672
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)
1680
# Create a new, but exactly alike, function
1681
# object, and decorate it to be a new D-Bus signal
1682
# 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
1694
# 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
1698
def fixscope(func1, func2):
1699
"""This function is a scope container to pass
1700
func1 and func2 to the "call_both" function
1701
outside of its arguments"""
1702
1703
@functools.wraps(func2)
1704
def call_both(*args, **kwargs):
1705
"""This function will emit two D-Bus
1706
signals by calling func1 and func2"""
1707
func1(*args, **kwargs)
1708
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
return call_both
1716
# Create the "call_both" function and add it to
1717
# the class
1718
attr[attrname] = fixscope(attribute, new_function)
1719
# Is this a D-Bus method?
1720
elif getattr(attribute, "_dbus_is_method", False):
1721
# Create a new, but exactly alike, function
1722
# object. Decorate it to be a new D-Bus method
1723
# with the alternate D-Bus interface name. Add it
1724
# 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
1737
# Is this a D-Bus property?
1738
elif getattr(attribute, "_dbus_is_property", False):
1739
# Create a new, but exactly alike, function
1740
# object, and decorate it to be a new D-Bus
1741
# property with the alternate D-Bus interface
1742
# 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"})
1795
class ClientDBus(Client, DBusObjectWithProperties):
1796
"""A Client class using D-Bus
1797
1798
Attributes:
1799
dbus_object_path: dbus.ObjectPath
1800
bus: dbus.SystemBus()
1801
"""
1802
1803
runtime_expansions = (Client.runtime_expansions
1804
+ ("dbus_object_path", ))
1805
1806
_interface = "se.recompile.Mandos.Client"
1807
1808
# dbus.service.Object doesn't use super(), so we can't either.
1809
1810
def __init__(self, bus=None, *args, **kwargs):
1811
self.bus = bus
1812
Client.__init__(self, *args, **kwargs)
1813
# Only now, when this client is initialized, can it show up on
1814
# the D-Bus
1815
client_object_name = str(self.name).translate(
1816
{ord("."): ord("_"),
1817
ord("-"): ord("_")})
1818
self.dbus_object_path = dbus.ObjectPath(
1819
"/clients/" + client_object_name)
1820
DBusObjectWithProperties.__init__(self, self.bus,
1821
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):
1828
""" Modify a variable so that it's a property which announces
1829
its changes to DBus.
1830
1831
transform_fun: Function that takes a value and a variant_level
1832
and transforms it to a D-Bus type.
1833
dbus_name: D-Bus name of the variable
1834
type_func: Function that transform the value before sending it
1835
to the D-Bus. Default: no transform
1836
variant_level: D-Bus variant level. Default: 1
1837
"""
1838
attrname = "_{}".format(dbus_name)
1839
1840
def setter(self, value):
1841
if hasattr(self, "dbus_object_path"):
1842
if (not hasattr(self, attrname) or
1843
type_func(getattr(self, attrname, None))
1844
!= 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())
1860
setattr(self, attrname, value)
1861
1862
return property(lambda self: getattr(self, attrname), setter)
1863
1864
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1865
approvals_pending = notifychangeproperty(dbus.Boolean,
1866
"ApprovalPending",
1867
type_func=bool)
1868
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1869
last_enabled = notifychangeproperty(datetime_to_dbus,
1870
"LastEnabled")
1871
checker = notifychangeproperty(
1872
dbus.Boolean, "CheckerRunning",
1873
type_func=lambda checker: checker is not None)
1874
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1875
"LastCheckedOK")
1876
last_checker_status = notifychangeproperty(dbus.Int16,
1877
"LastCheckerStatus")
1878
last_approval_request = notifychangeproperty(
1879
datetime_to_dbus, "LastApprovalRequest")
1880
approved_by_default = notifychangeproperty(dbus.Boolean,
1881
"ApprovedByDefault")
1882
approval_delay = notifychangeproperty(
1883
dbus.UInt64, "ApprovalDelay",
1884
type_func=lambda td: td.total_seconds() * 1000)
1885
approval_duration = notifychangeproperty(
1886
dbus.UInt64, "ApprovalDuration",
1887
type_func=lambda td: td.total_seconds() * 1000)
1888
host = notifychangeproperty(dbus.String, "Host")
1889
timeout = notifychangeproperty(
1890
dbus.UInt64, "Timeout",
1891
type_func=lambda td: td.total_seconds() * 1000)
1892
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)
1898
checker_command = notifychangeproperty(dbus.String, "Checker")
1899
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1900
invalidate_only=True)
1901
1902
del notifychangeproperty
1903
1904
def __del__(self, *args, **kwargs):
1905
try:
1906
self.remove_from_connection()
1907
except LookupError:
1908
pass
1909
if hasattr(DBusObjectWithProperties, "__del__"):
1910
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1911
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:
1920
# Emit D-Bus signal
1921
self.CheckerCompleted(dbus.Int16(exitstatus),
1922
# This is specific to GNU libC
1923
dbus.Int64(exitstatus << 8),
1924
dbus.String(command))
470
1925
else:
471
return now < (self.last_checked_ok + self.timeout)
472
473
## D-Bus methods & signals
474
_interface = u"se.bsnet.fukt.Mandos.Client"
475
476
# CheckedOK - method
477
CheckedOK = dbus.service.method(_interface)(checked_ok)
478
CheckedOK.__name__ = "CheckedOK"
479
1926
# Emit D-Bus signal
1927
self.CheckerCompleted(dbus.Int16(-1),
1928
dbus.Int64(
1929
# This is specific to GNU libC
1930
(exitstatus << 8)
1931
| self.last_checker_signal),
1932
dbus.String(command))
1933
return ret
1934
1935
def start_checker(self, *args, **kwargs):
1936
old_checker_pid = getattr(self.checker, "pid", None)
1937
r = Client.start_checker(self, *args, **kwargs)
1938
# Only if new checker process was started
1939
if (self.checker is not None
1940
and old_checker_pid != self.checker.pid):
1941
# Emit D-Bus signal
1942
self.CheckerStarted(self.current_checker_command)
1943
return r
1944
1945
def _reset_approved(self):
1946
self.approved = None
1947
return False
1948
1949
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
self.send_changedstate()
1954
1955
# D-Bus methods, signals & properties
1956
1957
# Interfaces
1958
1959
# Signals
1960
480
1961
# CheckerCompleted - signal
481
1962
@dbus.service.signal(_interface, signature="nxs")
482
1963
def CheckerCompleted(self, exitcode, waitstatus, command):
483
1964
"D-Bus signal"
484
1965
pass
485
1966
486
1967
# CheckerStarted - signal
487
1968
@dbus.service.signal(_interface, signature="s")
488
1969
def CheckerStarted(self, command):
489
1970
"D-Bus signal"
490
1971
pass
491
492
# GetAllProperties - method
493
@dbus.service.method(_interface, out_signature="a{sv}")
494
def GetAllProperties(self):
495
"D-Bus method"
496
return dbus.Dictionary({
497
dbus.String("name"):
498
dbus.String(self.name, variant_level=1),
499
dbus.String("fingerprint"):
500
dbus.String(self.fingerprint, variant_level=1),
501
dbus.String("host"):
502
dbus.String(self.host, variant_level=1),
503
dbus.String("created"):
504
_datetime_to_dbus(self.created, variant_level=1),
505
dbus.String("last_enabled"):
506
(_datetime_to_dbus(self.last_enabled,
507
variant_level=1)
508
if self.last_enabled is not None
509
else dbus.Boolean(False, variant_level=1)),
510
dbus.String("enabled"):
511
dbus.Boolean(self.enabled, variant_level=1),
512
dbus.String("last_checked_ok"):
513
(_datetime_to_dbus(self.last_checked_ok,
514
variant_level=1)
515
if self.last_checked_ok is not None
516
else dbus.Boolean (False, variant_level=1)),
517
dbus.String("timeout"):
518
dbus.UInt64(self.timeout_milliseconds(),
519
variant_level=1),
520
dbus.String("interval"):
521
dbus.UInt64(self.interval_milliseconds(),
522
variant_level=1),
523
dbus.String("checker"):
524
dbus.String(self.checker_command,
525
variant_level=1),
526
dbus.String("checker_running"):
527
dbus.Boolean(self.checker is not None,
528
variant_level=1),
529
dbus.String("object_path"):
530
dbus.ObjectPath(self.dbus_object_path,
531
variant_level=1)
532
}, signature="sv")
533
534
# IsStillValid - method
535
IsStillValid = (dbus.service.method(_interface, out_signature="b")
536
(still_valid))
537
IsStillValid.__name__ = "IsStillValid"
538
1972
539
1973
# PropertyChanged - signal
1974
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
540
1975
@dbus.service.signal(_interface, signature="sv")
541
1976
def PropertyChanged(self, property, value):
542
1977
"D-Bus signal"
543
1978
pass
544
545
# SetChecker - method
546
@dbus.service.method(_interface, in_signature="s")
547
def SetChecker(self, checker):
548
"D-Bus setter method"
549
self.checker_command = checker
550
# Emit D-Bus signal
551
self.PropertyChanged(dbus.String(u"checker"),
552
dbus.String(self.checker_command,
553
variant_level=1))
554
555
# SetHost - method
556
@dbus.service.method(_interface, in_signature="s")
557
def SetHost(self, host):
558
"D-Bus setter method"
559
self.host = host
560
# Emit D-Bus signal
561
self.PropertyChanged(dbus.String(u"host"),
562
dbus.String(self.host, variant_level=1))
563
564
# SetInterval - method
565
@dbus.service.method(_interface, in_signature="t")
566
def SetInterval(self, milliseconds):
567
self.interval = datetime.timedelta(0, 0, 0, milliseconds)
568
# Emit D-Bus signal
569
self.PropertyChanged(dbus.String(u"interval"),
570
(dbus.UInt64(self.interval_milliseconds(),
571
variant_level=1)))
572
573
# SetSecret - method
574
@dbus.service.method(_interface, in_signature="ay",
575
byte_arrays=True)
576
def SetSecret(self, secret):
577
"D-Bus setter method"
578
self.secret = str(secret)
579
580
# SetTimeout - method
581
@dbus.service.method(_interface, in_signature="t")
582
def SetTimeout(self, milliseconds):
583
self.timeout = datetime.timedelta(0, 0, 0, milliseconds)
584
# Emit D-Bus signal
585
self.PropertyChanged(dbus.String(u"timeout"),
586
(dbus.UInt64(self.timeout_milliseconds(),
587
variant_level=1)))
588
1979
1980
# GotSecret - signal
1981
@dbus.service.signal(_interface)
1982
def GotSecret(self):
1983
"""D-Bus signal
1984
Is sent after a successful transfer of secret from the Mandos
1985
server to mandos-client
1986
"""
1987
pass
1988
1989
# Rejected - signal
1990
@dbus.service.signal(_interface, signature="s")
1991
def Rejected(self, reason):
1992
"D-Bus signal"
1993
pass
1994
1995
# NeedApproval - signal
1996
@dbus.service.signal(_interface, signature="tb")
1997
def NeedApproval(self, timeout, default):
1998
"D-Bus signal"
1999
return self.need_approval()
2000
2001
# Methods
2002
2003
# Approve - method
2004
@dbus.service.method(_interface, in_signature="b")
2005
def Approve(self, value):
2006
self.approve(value)
2007
2008
# CheckedOK - method
2009
@dbus.service.method(_interface)
2010
def CheckedOK(self):
2011
self.checked_ok()
2012
589
2013
# Enable - method
590
Enable = dbus.service.method(_interface)(enable)
591
Enable.__name__ = "Enable"
592
2014
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2015
@dbus.service.method(_interface)
2016
def Enable(self):
2017
"D-Bus method"
2018
self.enable()
2019
593
2020
# StartChecker - method
2021
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
594
2022
@dbus.service.method(_interface)
595
2023
def StartChecker(self):
596
2024
"D-Bus method"
597
2025
self.start_checker()
598
2026
599
2027
# Disable - method
2028
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
600
2029
@dbus.service.method(_interface)
601
2030
def Disable(self):
602
2031
"D-Bus method"
603
2032
self.disable()
604
2033
605
2034
# StopChecker - method
606
StopChecker = dbus.service.method(_interface)(stop_checker)
607
StopChecker.__name__ = "StopChecker"
608
2035
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2036
@dbus.service.method(_interface)
2037
def StopChecker(self):
2038
self.stop_checker()
2039
2040
# Properties
2041
2042
# ApprovalPending - property
2043
@dbus_service_property(_interface, signature="b", access="read")
2044
def ApprovalPending_dbus_property(self):
2045
return dbus.Boolean(bool(self.approvals_pending))
2046
2047
# ApprovedByDefault - property
2048
@dbus_service_property(_interface,
2049
signature="b",
2050
access="readwrite")
2051
def ApprovedByDefault_dbus_property(self, value=None):
2052
if value is None: # get
2053
return dbus.Boolean(self.approved_by_default)
2054
self.approved_by_default = bool(value)
2055
2056
# ApprovalDelay - property
2057
@dbus_service_property(_interface,
2058
signature="t",
2059
access="readwrite")
2060
def ApprovalDelay_dbus_property(self, value=None):
2061
if value is None: # get
2062
return dbus.UInt64(self.approval_delay.total_seconds()
2063
* 1000)
2064
self.approval_delay = datetime.timedelta(0, 0, 0, value)
2065
2066
# ApprovalDuration - property
2067
@dbus_service_property(_interface,
2068
signature="t",
2069
access="readwrite")
2070
def ApprovalDuration_dbus_property(self, value=None):
2071
if value is None: # get
2072
return dbus.UInt64(self.approval_duration.total_seconds()
2073
* 1000)
2074
self.approval_duration = datetime.timedelta(0, 0, 0, value)
2075
2076
# Name - property
2077
@dbus_annotations(
2078
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2079
@dbus_service_property(_interface, signature="s", access="read")
2080
def Name_dbus_property(self):
2081
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
2090
# Fingerprint - property
2091
@dbus_annotations(
2092
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2093
@dbus_service_property(_interface, signature="s", access="read")
2094
def Fingerprint_dbus_property(self):
2095
return dbus.String(self.fingerprint)
2096
2097
# Host - property
2098
@dbus_service_property(_interface,
2099
signature="s",
2100
access="readwrite")
2101
def Host_dbus_property(self, value=None):
2102
if value is None: # get
2103
return dbus.String(self.host)
2104
self.host = str(value)
2105
2106
# Created - property
2107
@dbus_annotations(
2108
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2109
@dbus_service_property(_interface, signature="s", access="read")
2110
def Created_dbus_property(self):
2111
return datetime_to_dbus(self.created)
2112
2113
# LastEnabled - property
2114
@dbus_service_property(_interface, signature="s", access="read")
2115
def LastEnabled_dbus_property(self):
2116
return datetime_to_dbus(self.last_enabled)
2117
2118
# Enabled - property
2119
@dbus_service_property(_interface,
2120
signature="b",
2121
access="readwrite")
2122
def Enabled_dbus_property(self, value=None):
2123
if value is None: # get
2124
return dbus.Boolean(self.enabled)
2125
if value:
2126
self.enable()
2127
else:
2128
self.disable()
2129
2130
# LastCheckedOK - property
2131
@dbus_service_property(_interface,
2132
signature="s",
2133
access="readwrite")
2134
def LastCheckedOK_dbus_property(self, value=None):
2135
if value is not None:
2136
self.checked_ok()
2137
return
2138
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
2145
# Expires - property
2146
@dbus_service_property(_interface, signature="s", access="read")
2147
def Expires_dbus_property(self):
2148
return datetime_to_dbus(self.expires)
2149
2150
# LastApprovalRequest - property
2151
@dbus_service_property(_interface, signature="s", access="read")
2152
def LastApprovalRequest_dbus_property(self):
2153
return datetime_to_dbus(self.last_approval_request)
2154
2155
# Timeout - property
2156
@dbus_service_property(_interface,
2157
signature="t",
2158
access="readwrite")
2159
def Timeout_dbus_property(self, value=None):
2160
if value is None: # get
2161
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2162
old_timeout = self.timeout
2163
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
2180
# ExtendedTimeout - property
2181
@dbus_service_property(_interface,
2182
signature="t",
2183
access="readwrite")
2184
def ExtendedTimeout_dbus_property(self, value=None):
2185
if value is None: # get
2186
return dbus.UInt64(self.extended_timeout.total_seconds()
2187
* 1000)
2188
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2189
2190
# Interval - property
2191
@dbus_service_property(_interface,
2192
signature="t",
2193
access="readwrite")
2194
def Interval_dbus_property(self, value=None):
2195
if value is None: # get
2196
return dbus.UInt64(self.interval.total_seconds() * 1000)
2197
self.interval = datetime.timedelta(0, 0, 0, value)
2198
if getattr(self, "checker_initiator_tag", None) is None:
2199
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
2207
# Checker - property
2208
@dbus_service_property(_interface,
2209
signature="s",
2210
access="readwrite")
2211
def Checker_dbus_property(self, value=None):
2212
if value is None: # get
2213
return dbus.String(self.checker_command)
2214
self.checker_command = str(value)
2215
2216
# CheckerRunning - property
2217
@dbus_service_property(_interface,
2218
signature="b",
2219
access="readwrite")
2220
def CheckerRunning_dbus_property(self, value=None):
2221
if value is None: # get
2222
return dbus.Boolean(self.checker is not None)
2223
if value:
2224
self.start_checker()
2225
else:
2226
self.stop_checker()
2227
2228
# ObjectPath - property
2229
@dbus_annotations(
2230
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2231
"org.freedesktop.DBus.Deprecated": "true"})
2232
@dbus_service_property(_interface, signature="o", access="read")
2233
def ObjectPath_dbus_property(self):
2234
return self.dbus_object_path # is already a dbus.ObjectPath
2235
2236
# 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)
2244
def Secret_dbus_property(self, value):
2245
self.secret = bytes(value)
2246
609
2247
del _interface
610
2248
611
2249
612
def peer_certificate(session):
613
"Return the peer's OpenPGP certificate as a bytestring"
614
# If not an OpenPGP certificate...
615
if (gnutls.library.functions
616
.gnutls_certificate_type_get(session._c_object)
617
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
618
# ...do the normal thing
619
return session.peer_certificate
620
list_size = ctypes.c_uint(1)
621
cert_list = (gnutls.library.functions
622
.gnutls_certificate_get_peers
623
(session._c_object, ctypes.byref(list_size)))
624
if not bool(cert_list) and list_size.value != 0:
625
raise gnutls.errors.GNUTLSError("error getting peer"
626
" certificate")
627
if list_size.value == 0:
628
return None
629
cert = cert_list[0]
630
return ctypes.string_at(cert.data, cert.size)
631
632
633
def fingerprint(openpgp):
634
"Convert an OpenPGP bytestring to a hexdigit fingerprint string"
635
# New GnuTLS "datum" with the OpenPGP public key
636
datum = (gnutls.library.types
637
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
638
ctypes.POINTER
639
(ctypes.c_ubyte)),
640
ctypes.c_uint(len(openpgp))))
641
# New empty GnuTLS certificate
642
crt = gnutls.library.types.gnutls_openpgp_crt_t()
643
(gnutls.library.functions
644
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
645
# Import the OpenPGP public key into the certificate
646
(gnutls.library.functions
647
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
648
gnutls.library.constants
649
.GNUTLS_OPENPGP_FMT_RAW))
650
# Verify the self signature in the key
651
crtverify = ctypes.c_uint()
652
(gnutls.library.functions
653
.gnutls_openpgp_crt_verify_self(crt, 0, ctypes.byref(crtverify)))
654
if crtverify.value != 0:
655
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
656
raise gnutls.errors.CertificateSecurityError("Verify failed")
657
# New buffer for the fingerprint
658
buf = ctypes.create_string_buffer(20)
659
buf_len = ctypes.c_size_t()
660
# Get the fingerprint from the certificate into the buffer
661
(gnutls.library.functions
662
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
663
ctypes.byref(buf_len)))
664
# Deinit the certificate
665
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
666
# Convert the buffer to a Python bytestring
667
fpr = ctypes.string_at(buf, buf_len.value)
668
# Convert the bytestring to hexadecimal notation
669
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
670
return hex_fpr
671
672
673
class TCP_handler(SocketServer.BaseRequestHandler, object):
674
"""A TCP request handler class.
675
Instantiated by IPv6_TCPServer for each request to handle it.
2250
class ProxyClient:
2251
def __init__(self, child_pipe, key_id, fpr, address):
2252
self._pipe = child_pipe
2253
self._pipe.send(('init', key_id, fpr, address))
2254
if not self._pipe.recv():
2255
raise KeyError(key_id or fpr)
2256
2257
def __getattribute__(self, name):
2258
if name == '_pipe':
2259
return super(ProxyClient, self).__getattribute__(name)
2260
self._pipe.send(('getattr', name))
2261
data = self._pipe.recv()
2262
if data[0] == 'data':
2263
return data[1]
2264
if data[0] == 'function':
2265
2266
def func(*args, **kwargs):
2267
self._pipe.send(('funcall', name, args, kwargs))
2268
return self._pipe.recv()[1]
2269
2270
return func
2271
2272
def __setattr__(self, name, value):
2273
if name == '_pipe':
2274
return super(ProxyClient, self).__setattr__(name, value)
2275
self._pipe.send(('setattr', name, value))
2276
2277
2278
class ClientHandler(socketserver.BaseRequestHandler, object):
2279
"""A class to handle client connections.
2280
2281
Instantiated once for each connection to handle it.
676
2282
Note: This will run in its own forked process."""
677
2283
678
2284
def handle(self):
679
logger.info(u"TCP connection from: %s",
680
unicode(self.client_address))
681
session = (gnutls.connection
682
.ClientSession(self.request,
683
gnutls.connection
684
.X509Credentials()))
685
686
line = self.request.makefile().readline()
687
logger.debug(u"Protocol version: %r", line)
688
try:
689
if int(line.strip().split()[0]) > 1:
690
raise RuntimeError
691
except (ValueError, IndexError, RuntimeError), error:
692
logger.error(u"Unknown protocol version: %s", error)
693
return
694
695
# Note: gnutls.connection.X509Credentials is really a generic
696
# GnuTLS certificate credentials object so long as no X.509
697
# keys are added to it. Therefore, we can use it here despite
698
# using OpenPGP certificates.
699
700
#priority = ':'.join(("NONE", "+VERS-TLS1.1", "+AES-256-CBC",
701
# "+SHA1", "+COMP-NULL", "+CTYPE-OPENPGP",
702
# "+DHE-DSS"))
703
# Use a fallback default, since this MUST be set.
704
priority = self.server.settings.get("priority", "NORMAL")
705
(gnutls.library.functions
706
.gnutls_priority_set_direct(session._c_object,
707
priority, None))
708
709
try:
710
session.handshake()
711
except gnutls.errors.GNUTLSError, error:
712
logger.warning(u"Handshake failed: %s", error)
713
# Do not run session.bye() here: the session is not
714
# established. Just abandon the request.
715
return
716
logger.debug(u"Handshake succeeded")
717
try:
718
fpr = fingerprint(peer_certificate(session))
719
except (TypeError, gnutls.errors.GNUTLSError), error:
720
logger.warning(u"Bad certificate: %s", error)
721
session.bye()
722
return
723
logger.debug(u"Fingerprint: %s", fpr)
724
725
for c in self.server.clients:
726
if c.fingerprint == fpr:
727
client = c
728
break
2285
with contextlib.closing(self.server.child_pipe) as child_pipe:
2286
logger.info("TCP connection from: %s",
2287
str(self.client_address))
2288
logger.debug("Pipe FD: %d",
2289
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"))
2297
# Use a fallback default, since this MUST be set.
2298
priority = self.server.gnutls_priority
2299
if priority is None:
2300
priority = "NORMAL"
2301
gnutls.priority_set_direct(session._c_object,
2302
priority.encode("utf-8"),
2303
None)
2304
2305
# Start communication using the Mandos protocol
2306
# Get protocol number
2307
line = self.request.makefile().readline()
2308
logger.debug("Protocol version: %r", line)
2309
try:
2310
if int(line.strip().split()[0]) > 1:
2311
raise RuntimeError(line)
2312
except (ValueError, IndexError, RuntimeError) as error:
2313
logger.error("Unknown protocol version: %s", error)
2314
return
2315
2316
# Start GnuTLS connection
2317
try:
2318
session.handshake()
2319
except gnutls.Error as error:
2320
logger.warning("Handshake failed: %s", error)
2321
# Do not run session.bye() here: the session is not
2322
# established. Just abandon the request.
2323
return
2324
logger.debug("Handshake succeeded")
2325
2326
approval_required = False
2327
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,
2350
self.client_address)
2351
except KeyError:
2352
return
2353
2354
if client.approval_delay:
2355
delay = client.approval_delay
2356
client.approvals_pending += 1
2357
approval_required = True
2358
2359
while True:
2360
if not client.enabled:
2361
logger.info("Client %s is disabled",
2362
client.name)
2363
if self.server.use_dbus:
2364
# Emit D-Bus signal
2365
client.Rejected("Disabled")
2366
return
2367
2368
if client.approved or not client.approval_delay:
2369
# We are approved or approval is disabled
2370
break
2371
elif client.approved is None:
2372
logger.info("Client %s needs approval",
2373
client.name)
2374
if self.server.use_dbus:
2375
# Emit D-Bus signal
2376
client.NeedApproval(
2377
client.approval_delay.total_seconds()
2378
* 1000, client.approved_by_default)
2379
else:
2380
logger.warning("Client %s was not approved",
2381
client.name)
2382
if self.server.use_dbus:
2383
# Emit D-Bus signal
2384
client.Rejected("Denied")
2385
return
2386
2387
# wait until timeout or approved
2388
time = datetime.datetime.now()
2389
client.changedstate.acquire()
2390
client.changedstate.wait(delay.total_seconds())
2391
client.changedstate.release()
2392
time2 = datetime.datetime.now()
2393
if (time2 - time) >= delay:
2394
if not client.approved_by_default:
2395
logger.warning("Client %s timed out while"
2396
" waiting for approval",
2397
client.name)
2398
if self.server.use_dbus:
2399
# Emit D-Bus signal
2400
client.Rejected("Approval timed out")
2401
return
2402
else:
2403
break
2404
else:
2405
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
2414
logger.info("Sending secret to %s", client.name)
2415
# bump the timeout using extended_timeout
2416
client.bump_timeout(client.extended_timeout)
2417
if self.server.use_dbus:
2418
# Emit D-Bus signal
2419
client.GotSecret()
2420
2421
finally:
2422
if approval_required:
2423
client.approvals_pending -= 1
2424
try:
2425
session.bye()
2426
except gnutls.Error as error:
2427
logger.warning("GnuTLS bye failed",
2428
exc_info=error)
2429
2430
@staticmethod
2431
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,))
729
2440
else:
730
logger.warning(u"Client not found for fingerprint: %s",
731
fpr)
732
session.bye()
733
return
734
# Have to check if client.still_valid(), since it is possible
735
# that the client timed out while establishing the GnuTLS
736
# session.
737
if not client.still_valid():
738
logger.warning(u"Client %(name)s is invalid",
739
vars(client))
740
session.bye()
741
return
742
## This won't work here, since we're in a fork.
743
# client.checked_ok()
744
sent_size = 0
745
while sent_size < len(client.secret):
746
sent = session.send(client.secret[sent_size:])
747
logger.debug(u"Sent: %d, remaining: %d",
748
sent, len(client.secret)
749
- (sent_size + sent))
750
sent_size += sent
751
session.bye()
752
753
754
class IPv6_TCPServer(SocketServer.ForkingMixIn,
755
SocketServer.TCPServer, object):
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""
2448
list_size = ctypes.c_uint(1)
2449
cert_list = (gnutls.certificate_get_peers
2450
(session._c_object, ctypes.byref(list_size)))
2451
if not bool(cert_list) and list_size.value != 0:
2452
raise gnutls.Error("error getting peer certificate")
2453
if list_size.value == 0:
2454
return None
2455
cert = cert_list[0]
2456
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
2493
@staticmethod
2494
def fingerprint(openpgp):
2495
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2496
# 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)))
2501
# New empty GnuTLS certificate
2502
crt = gnutls.openpgp_crt_t()
2503
gnutls.openpgp_crt_init(ctypes.byref(crt))
2504
# Import the OpenPGP public key into the certificate
2505
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2506
gnutls.OPENPGP_FMT_RAW)
2507
# Verify the self signature in the key
2508
crtverify = ctypes.c_uint()
2509
gnutls.openpgp_crt_verify_self(crt, 0,
2510
ctypes.byref(crtverify))
2511
if crtverify.value != 0:
2512
gnutls.openpgp_crt_deinit(crt)
2513
raise gnutls.CertificateSecurityError(code
2514
=crtverify.value)
2515
# New buffer for the fingerprint
2516
buf = ctypes.create_string_buffer(20)
2517
buf_len = ctypes.c_size_t()
2518
# Get the fingerprint from the certificate into the buffer
2519
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2520
ctypes.byref(buf_len))
2521
# Deinit the certificate
2522
gnutls.openpgp_crt_deinit(crt)
2523
# Convert the buffer to a Python bytestring
2524
fpr = ctypes.string_at(buf, buf_len.value)
2525
# Convert the bytestring to hexadecimal notation
2526
hex_fpr = binascii.hexlify(fpr).upper()
2527
return hex_fpr
2528
2529
2530
class MultiprocessingMixIn:
2531
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2532
2533
def sub_process_main(self, request, address):
2534
try:
2535
self.finish_request(request, address)
2536
except Exception:
2537
self.handle_error(request, address)
2538
self.close_request(request)
2539
2540
def process_request(self, request, address):
2541
"""Start a new process to process the request."""
2542
proc = multiprocessing.Process(target=self.sub_process_main,
2543
args=(request, address))
2544
proc.start()
2545
return proc
2546
2547
2548
class MultiprocessingMixInWithPipe(MultiprocessingMixIn):
2549
""" adds a pipe to the MixIn """
2550
2551
def process_request(self, request, client_address):
2552
"""Overrides and wraps the original process_request().
2553
2554
This function creates a new pipe in self.pipe
2555
"""
2556
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2557
2558
proc = MultiprocessingMixIn.process_request(self, request,
2559
client_address)
2560
self.child_pipe.close()
2561
self.add_pipe(parent_pipe, proc)
2562
2563
def add_pipe(self, parent_pipe, proc):
2564
"""Dummy function; override as necessary"""
2565
raise NotImplementedError()
2566
2567
2568
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2569
socketserver.TCPServer):
756
2570
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
2571
757
2572
Attributes:
758
settings: Server settings
759
clients: Set() of Client objects
760
2573
enabled: Boolean; whether this server is activated yet
2574
interface: None or a network interface name (string)
2575
use_ipv6: Boolean; to use IPv6 or not
761
2576
"""
762
address_family = socket.AF_INET6
763
def __init__(self, *args, **kwargs):
764
if "settings" in kwargs:
765
self.settings = kwargs["settings"]
766
del kwargs["settings"]
767
if "clients" in kwargs:
768
self.clients = kwargs["clients"]
769
del kwargs["clients"]
770
if "use_ipv6" in kwargs:
771
if not kwargs["use_ipv6"]:
772
self.address_family = socket.AF_INET
773
del kwargs["use_ipv6"]
774
self.enabled = False
775
super(IPv6_TCPServer, self).__init__(*args, **kwargs)
2577
2578
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
"""
2585
self.interface = interface
2586
if use_ipv6:
2587
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
socketserver.TCPServer.__init__(self, server_address,
2616
RequestHandlerClass)
2617
776
2618
def server_bind(self):
777
2619
"""This overrides the normal server_bind() function
778
2620
to bind to an interface if one was specified, and also NOT to
779
2621
bind to an address or port if they were not specified."""
780
if self.settings["interface"]:
781
# 25 is from /usr/include/asm-i486/socket.h
782
SO_BINDTODEVICE = getattr(socket, "SO_BINDTODEVICE", 25)
2622
global SO_BINDTODEVICE
2623
if self.interface is not None:
2624
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
783
2629
try:
784
self.socket.setsockopt(socket.SOL_SOCKET,
785
SO_BINDTODEVICE,
786
self.settings["interface"])
787
except socket.error, error:
788
if error[0] == errno.EPERM:
789
logger.error(u"No permission to"
790
u" bind to interface %s",
791
self.settings["interface"])
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)
792
2644
else:
793
2645
raise
794
2646
# Only bind(2) the socket if we really need to.
795
2647
if self.server_address[0] or self.server_address[1]:
2648
if self.server_address[1]:
2649
self.allow_reuse_address = True
796
2650
if not self.server_address[0]:
797
2651
if self.address_family == socket.AF_INET6:
798
any_address = "::" # in6addr_any
2652
any_address = "::" # in6addr_any
799
2653
else:
800
any_address = socket.INADDR_ANY
2654
any_address = "0.0.0.0" # INADDR_ANY
801
2655
self.server_address = (any_address,
802
2656
self.server_address[1])
803
2657
elif not self.server_address[1]:
804
self.server_address = (self.server_address[0],
805
0)
806
# if self.settings["interface"]:
2658
self.server_address = (self.server_address[0], 0)
2659
# if self.interface:
807
2660
# self.server_address = (self.server_address[0],
808
2661
# 0, # port
809
2662
# 0, # flowinfo
810
2663
# if_nametoindex
811
# (self.settings
812
# ["interface"]))
813
return super(IPv6_TCPServer, self).server_bind()
2664
# (self.interface))
2665
return socketserver.TCPServer.server_bind(self)
2666
2667
2668
class MandosServer(IPv6_TCPServer):
2669
"""Mandos server.
2670
2671
Attributes:
2672
clients: set of Client objects
2673
gnutls_priority GnuTLS priority string
2674
use_dbus: Boolean; to emit D-Bus signals or not
2675
2676
Assumes a GLib.MainLoop event loop.
2677
"""
2678
2679
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):
2686
self.enabled = False
2687
self.clients = clients
2688
if self.clients is None:
2689
self.clients = {}
2690
self.use_dbus = use_dbus
2691
self.gnutls_priority = gnutls_priority
2692
IPv6_TCPServer.__init__(self, server_address,
2693
RequestHandlerClass,
2694
interface=interface,
2695
use_ipv6=use_ipv6,
2696
socketfd=socketfd)
2697
814
2698
def server_activate(self):
815
2699
if self.enabled:
816
return super(IPv6_TCPServer, self).server_activate()
2700
return socketserver.TCPServer.server_activate(self)
2701
817
2702
def enable(self):
818
2703
self.enabled = True
819
2704
2705
def add_pipe(self, parent_pipe, proc):
2706
# 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):
2718
# error, or the other end of multiprocessing.Pipe has closed
2719
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2720
# Wait for other process to exit
2721
proc.join()
2722
return False
2723
2724
# Read a request from the child
2725
request = parent_pipe.recv()
2726
command = request[0]
2727
2728
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:
2741
client = c
2742
break
2743
else:
2744
logger.info("Client not found for key ID: %s, address"
2745
": %s", key_id or fpr, address)
2746
if self.use_dbus:
2747
# Emit D-Bus signal
2748
mandos_dbus_service.ClientNotFound(key_id or fpr,
2749
address[0])
2750
parent_pipe.send(False)
2751
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))
2760
parent_pipe.send(True)
2761
# remove the old hook in favor of the new above hook on
2762
# same fileno
2763
return False
2764
if command == 'funcall':
2765
funcname = request[1]
2766
args = request[2]
2767
kwargs = request[3]
2768
2769
parent_pipe.send(('data', getattr(client_object,
2770
funcname)(*args,
2771
**kwargs)))
2772
2773
if command == 'getattr':
2774
attrname = request[1]
2775
if isinstance(client_object.__getattribute__(attrname),
2776
collections.abc.Callable):
2777
parent_pipe.send(('function', ))
2778
else:
2779
parent_pipe.send((
2780
'data', client_object.__getattribute__(attrname)))
2781
2782
if command == 'setattr':
2783
attrname = request[1]
2784
value = request[2]
2785
setattr(client_object, attrname, value)
2786
2787
return True
2788
2789
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
820
2890
821
2891
def string_to_delta(interval):
822
2892
"""Parse a string and return a datetime.timedelta
823
824
>>> string_to_delta('7d')
825
datetime.timedelta(7)
826
>>> string_to_delta('60s')
827
datetime.timedelta(0, 60)
828
>>> string_to_delta('60m')
829
datetime.timedelta(0, 3600)
830
>>> string_to_delta('24h')
831
datetime.timedelta(1)
832
>>> string_to_delta(u'1w')
833
datetime.timedelta(7)
834
>>> string_to_delta('5m 30s')
835
datetime.timedelta(0, 330)
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
836
2906
"""
2907
2908
try:
2909
return rfc3339_duration_to_delta(interval)
2910
except ValueError:
2911
pass
2912
837
2913
timevalue = datetime.timedelta(0)
838
2914
for s in interval.split():
839
2915
try:
840
suffix = unicode(s[-1])
2916
suffix = s[-1]
841
2917
value = int(s[:-1])
842
if suffix == u"d":
2918
if suffix == "d":
843
2919
delta = datetime.timedelta(value)
844
elif suffix == u"s":
2920
elif suffix == "s":
845
2921
delta = datetime.timedelta(0, value)
846
elif suffix == u"m":
2922
elif suffix == "m":
847
2923
delta = datetime.timedelta(0, 0, 0, 0, value)
848
elif suffix == u"h":
2924
elif suffix == "h":
849
2925
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
850
elif suffix == u"w":
2926
elif suffix == "w":
851
2927
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
852
2928
else:
853
raise ValueError
854
except (ValueError, IndexError):
855
raise ValueError
2929
raise ValueError("Unknown suffix {!r}".format(suffix))
2930
except IndexError as e:
2931
raise ValueError(*(e.args))
856
2932
timevalue += delta
857
2933
return timevalue
858
2934
859
2935
860
def server_state_changed(state):
861
"""Derived from the Avahi example code"""
862
if state == avahi.SERVER_COLLISION:
863
logger.error(u"Zeroconf server name collision")
864
service.remove()
865
elif state == avahi.SERVER_RUNNING:
866
service.add()
867
868
869
def entry_group_state_changed(state, error):
870
"""Derived from the Avahi example code"""
871
logger.debug(u"Avahi state change: %i", state)
872
873
if state == avahi.ENTRY_GROUP_ESTABLISHED:
874
logger.debug(u"Zeroconf service established.")
875
elif state == avahi.ENTRY_GROUP_COLLISION:
876
logger.warning(u"Zeroconf service name collision.")
877
service.rename()
878
elif state == avahi.ENTRY_GROUP_FAILURE:
879
logger.critical(u"Avahi: Error in group state changed %s",
880
unicode(error))
881
raise AvahiGroupError(u"State changed: %s" % unicode(error))
882
883
def if_nametoindex(interface):
884
"""Call the C function if_nametoindex(), or equivalent"""
885
global if_nametoindex
886
try:
887
if_nametoindex = (ctypes.cdll.LoadLibrary
888
(ctypes.util.find_library("c"))
889
.if_nametoindex)
890
except (OSError, AttributeError):
891
if "struct" not in sys.modules:
892
import struct
893
if "fcntl" not in sys.modules:
894
import fcntl
895
def if_nametoindex(interface):
896
"Get an interface index the hard way, i.e. using fcntl()"
897
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
898
with closing(socket.socket()) as s:
899
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
900
struct.pack("16s16x", interface))
901
interface_index = struct.unpack("I", ifreq[16:20])[0]
902
return interface_index
903
return if_nametoindex(interface)
904
905
906
def daemon(nochdir = False, noclose = False):
2936
def daemon(nochdir=False, noclose=False):
907
2937
"""See daemon(3). Standard BSD Unix function.
2938
908
2939
This should really exist as os.daemon, but it doesn't (yet)."""
909
2940
if os.fork():
910
2941
sys.exit()
915
2946
sys.exit()
916
2947
if not noclose:
917
2948
# Close all standard open file descriptors
918
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2949
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
919
2950
if not stat.S_ISCHR(os.fstat(null).st_mode):
920
2951
raise OSError(errno.ENODEV,
921
"/dev/null not a character device")
2952
"{} not a character device"
2953
.format(os.devnull))
922
2954
os.dup2(null, sys.stdin.fileno())
923
2955
os.dup2(null, sys.stdout.fileno())
924
2956
os.dup2(null, sys.stderr.fileno())
927
2959
928
2960
929
2961
def main():
930
parser = optparse.OptionParser(version = "%%prog %s" % version)
931
parser.add_option("-i", "--interface", type="string",
932
metavar="IF", help="Bind to interface IF")
933
parser.add_option("-a", "--address", type="string",
934
help="Address to listen for requests on")
935
parser.add_option("-p", "--port", type="int",
936
help="Port number to receive requests on")
937
parser.add_option("--check", action="store_true",
938
help="Run self-test")
939
parser.add_option("--debug", action="store_true",
940
help="Debug mode; run in foreground and log to"
941
" terminal")
942
parser.add_option("--priority", type="string", help="GnuTLS"
943
" priority string (see GnuTLS documentation)")
944
parser.add_option("--servicename", type="string", metavar="NAME",
945
help="Zeroconf service name")
946
parser.add_option("--configdir", type="string",
947
default="/etc/mandos", metavar="DIR",
948
help="Directory to search for configuration"
949
" files")
950
parser.add_option("--no-dbus", action="store_false",
951
dest="use_dbus",
952
help="Do not provide D-Bus system bus"
953
" interface")
954
parser.add_option("--no-ipv6", action="store_false",
955
dest="use_ipv6", help="Do not use IPv6")
956
options = parser.parse_args()[0]
957
958
if options.check:
959
import doctest
960
doctest.testmod()
961
sys.exit()
962
2962
2963
##################################################################
2964
# Parsing of options, both command line and config file
2965
2966
parser = argparse.ArgumentParser()
2967
parser.add_argument("-v", "--version", action="version",
2968
version="%(prog)s {}".format(version),
2969
help="show version number and exit")
2970
parser.add_argument("-i", "--interface", metavar="IF",
2971
help="Bind to interface IF")
2972
parser.add_argument("-a", "--address",
2973
help="Address to listen for requests on")
2974
parser.add_argument("-p", "--port", type=int,
2975
help="Port number to receive requests on")
2976
parser.add_argument("--check", action="store_true",
2977
help="Run self-test")
2978
parser.add_argument("--debug", action="store_true",
2979
help="Debug mode; run in foreground and log"
2980
" to terminal", default=None)
2981
parser.add_argument("--debuglevel", metavar="LEVEL",
2982
help="Debug level for stdout output")
2983
parser.add_argument("--priority", help="GnuTLS"
2984
" priority string (see GnuTLS documentation)")
2985
parser.add_argument("--servicename",
2986
metavar="NAME", help="Zeroconf service name")
2987
parser.add_argument("--configdir",
2988
default="/etc/mandos", metavar="DIR",
2989
help="Directory to search for configuration"
2990
" files")
2991
parser.add_argument("--no-dbus", action="store_false",
2992
dest="use_dbus", help="Do not provide D-Bus"
2993
" system bus interface", default=None)
2994
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
3011
options = parser.parse_args()
3012
963
3013
# Default values for config file for server-global settings
964
server_defaults = { "interface": "",
965
"address": "",
966
"port": "",
967
"debug": "False",
968
"priority":
969
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
970
"servicename": "Mandos",
971
"use_dbus": "True",
972
"use_ipv6": "True",
973
}
974
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
975
3037
# Parse config file for server-global settings
976
server_config = ConfigParser.SafeConfigParser(server_defaults)
3038
server_config = configparser.ConfigParser(server_defaults)
977
3039
del server_defaults
978
3040
server_config.read(os.path.join(options.configdir, "mandos.conf"))
979
# Convert the SafeConfigParser object to a dict
3041
# Convert the ConfigParser object to a dict
980
3042
server_settings = server_config.defaults()
981
3043
# Use the appropriate methods on the non-string config options
982
server_settings["debug"] = server_config.getboolean("DEFAULT",
983
"debug")
984
server_settings["use_dbus"] = server_config.getboolean("DEFAULT",
985
"use_dbus")
986
server_settings["use_ipv6"] = server_config.getboolean("DEFAULT",
987
"use_ipv6")
3044
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3045
"foreground", "zeroconf"):
3046
server_settings[option] = server_config.getboolean("DEFAULT",
3047
option)
988
3048
if server_settings["port"]:
989
3049
server_settings["port"] = server_config.getint("DEFAULT",
990
3050
"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"])
991
3060
del server_config
992
3061
993
3062
# Override the settings from the config file with command line
994
3063
# options, if set.
995
3064
for option in ("interface", "address", "port", "debug",
996
"priority", "servicename", "configdir",
997
"use_dbus", "use_ipv6"):
3065
"priority", "servicename", "configdir", "use_dbus",
3066
"use_ipv6", "debuglevel", "restore", "statedir",
3067
"socket", "foreground", "zeroconf"):
998
3068
value = getattr(options, option)
999
3069
if value is not None:
1000
3070
server_settings[option] = value
1001
3071
del options
3072
# Force all strings to be unicode
3073
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
1002
3084
# Now we have our good server settings in "server_settings"
1003
3085
3086
##################################################################
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
1004
3093
# For convenience
1005
3094
debug = server_settings["debug"]
3095
debuglevel = server_settings["debuglevel"]
1006
3096
use_dbus = server_settings["use_dbus"]
1007
3097
use_ipv6 = server_settings["use_ipv6"]
1008
1009
if not debug:
1010
syslogger.setLevel(logging.WARNING)
1011
console.setLevel(logging.WARNING)
1012
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
1013
3112
if server_settings["servicename"] != "Mandos":
1014
syslogger.setFormatter(logging.Formatter
1015
('Mandos (%s): %%(levelname)s:'
1016
' %%(message)s'
1017
% server_settings["servicename"]))
1018
3113
syslogger.setFormatter(
3114
logging.Formatter('Mandos ({}) [%(process)d]:'
3115
' %(levelname)s: %(message)s'.format(
3116
server_settings["servicename"])))
3117
1019
3118
# Parse config file with clients
1020
client_defaults = { "timeout": "1h",
1021
"interval": "5m",
1022
"checker": "fping -q -- %%(host)s",
1023
"host": "",
1024
}
1025
client_config = ConfigParser.SafeConfigParser(client_defaults)
3119
client_config = configparser.ConfigParser(Client.client_defaults)
1026
3120
client_config.read(os.path.join(server_settings["configdir"],
1027
3121
"clients.conf"))
1028
1029
clients = Set()
1030
tcp_server = IPv6_TCPServer((server_settings["address"],
1031
server_settings["port"]),
1032
TCP_handler,
1033
settings=server_settings,
1034
clients=clients, use_ipv6=use_ipv6)
1035
pidfilename = "/var/run/mandos.pid"
1036
try:
1037
pidfile = open(pidfilename, "w")
1038
except IOError:
1039
logger.error("Could not open file %r", pidfilename)
1040
1041
try:
1042
uid = pwd.getpwnam("_mandos").pw_uid
1043
gid = pwd.getpwnam("_mandos").pw_gid
1044
except KeyError:
1045
try:
1046
uid = pwd.getpwnam("mandos").pw_uid
1047
gid = pwd.getpwnam("mandos").pw_gid
3122
3123
global mandos_dbus_service
3124
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
1048
3155
except KeyError:
1049
try:
1050
uid = pwd.getpwnam("nobody").pw_uid
1051
gid = pwd.getpwnam("nogroup").pw_gid
1052
except KeyError:
1053
uid = 65534
1054
gid = 65534
3156
continue
3157
else:
3158
uid = 65534
3159
gid = 65534
1055
3160
try:
1056
3161
os.setgid(gid)
1057
3162
os.setuid(uid)
1058
except OSError, error:
1059
if error[0] != errno.EPERM:
1060
raise error
1061
1062
# Enable all possible GnuTLS debugging
3163
if debug:
3164
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3165
gid))
3166
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
1063
3172
if debug:
3173
# Enable all possible GnuTLS debugging
3174
1064
3175
# "Use a log level over 10 to enable all debugging options."
1065
3176
# - GnuTLS manual
1066
gnutls.library.functions.gnutls_global_set_log_level(11)
1067
1068
@gnutls.library.types.gnutls_log_func
3177
gnutls.global_set_log_level(11)
3178
3179
@gnutls.log_func
1069
3180
def debug_gnutls(level, string):
1070
3181
logger.debug("GnuTLS: %s", string[:-1])
1071
1072
(gnutls.library.functions
1073
.gnutls_global_set_log_function(debug_gnutls))
1074
1075
global service
1076
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1077
service = AvahiService(name = server_settings["servicename"],
1078
servicetype = "_mandos._tcp",
1079
protocol = protocol)
1080
if server_settings["interface"]:
1081
service.interface = (if_nametoindex
1082
(server_settings["interface"]))
1083
3182
3183
gnutls.global_set_log_function(debug_gnutls)
3184
3185
# Redirect stdin so all checkers get /dev/null
3186
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
3187
os.dup2(null, sys.stdin.fileno())
3188
if null > 2:
3189
os.close(null)
3190
3191
# Need to fork before connecting to D-Bus
3192
if not foreground:
3193
# Close all input and output, do double fork, etc.
3194
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
1084
3201
global main_loop
1085
global bus
1086
global server
1087
3202
# From the Avahi example code
1088
DBusGMainLoop(set_as_default=True )
1089
main_loop = gobject.MainLoop()
3203
DBusGMainLoop(set_as_default=True)
3204
main_loop = GLib.MainLoop()
1090
3205
bus = dbus.SystemBus()
1091
server = dbus.Interface(bus.get_object(avahi.DBUS_NAME,
1092
avahi.DBUS_PATH_SERVER),
1093
avahi.DBUS_INTERFACE_SERVER)
1094
3206
# End of Avahi example code
1095
3207
if use_dbus:
1096
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos", bus)
1097
1098
clients.update(Set(Client(name = section,
1099
config
1100
= dict(client_config.items(section)),
1101
use_dbus = use_dbus)
1102
for section in client_config.sections()))
1103
if not clients:
1104
logger.warning(u"No clients defined")
1105
1106
if debug:
1107
# Redirect stdin so all checkers get /dev/null
1108
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1109
os.dup2(null, sys.stdin.fileno())
1110
if null > 2:
1111
os.close(null)
1112
else:
1113
# No console logging
1114
logger.removeHandler(console)
1115
# Close all input and output, do double fork, etc.
1116
daemon()
1117
1118
try:
1119
pid = os.getpid()
1120
pidfile.write(str(pid) + "\n")
1121
pidfile.close()
3208
try:
3209
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)
3217
use_dbus = False
3218
server_settings["use_dbus"] = False
3219
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
3231
global multiprocessing_manager
3232
multiprocessing_manager = multiprocessing.Manager()
3233
3234
client_class = Client
3235
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))
3369
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
3395
if not tcp_server.clients:
3396
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)
1122
3407
del pidfile
1123
except IOError:
1124
logger.error(u"Could not write to file %r with PID %d",
1125
pidfilename, pid)
1126
except NameError:
1127
# "pidfile" was never created
1128
pass
1129
del pidfilename
1130
1131
def cleanup():
1132
"Cleanup function; run on exit"
1133
global group
1134
# From the Avahi example code
1135
if not group is None:
1136
group.Free()
1137
group = None
1138
# End of Avahi example code
1139
1140
while clients:
1141
client = clients.pop()
1142
client.disable_hook = None
1143
client.disable()
1144
1145
atexit.register(cleanup)
1146
1147
if not debug:
1148
signal.signal(signal.SIGINT, signal.SIG_IGN)
1149
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1150
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1151
3408
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
1152
3414
if use_dbus:
1153
class MandosServer(dbus.service.Object):
3415
3416
@alternate_dbus_interfaces(
3417
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3418
class MandosDBusService(DBusObjectWithObjectManager):
1154
3419
"""A D-Bus proxy object"""
3420
1155
3421
def __init__(self):
1156
3422
dbus.service.Object.__init__(self, bus, "/")
1157
_interface = u"se.bsnet.fukt.Mandos"
1158
1159
@dbus.service.signal(_interface, signature="oa{sv}")
1160
def ClientAdded(self, objpath, properties):
1161
"D-Bus signal"
1162
pass
1163
3423
3424
_interface = "se.recompile.Mandos"
3425
3426
@dbus.service.signal(_interface, signature="o")
3427
def ClientAdded(self, objpath):
3428
"D-Bus signal"
3429
pass
3430
3431
@dbus.service.signal(_interface, signature="ss")
3432
def ClientNotFound(self, key_id, address):
3433
"D-Bus signal"
3434
pass
3435
3436
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3437
"true"})
1164
3438
@dbus.service.signal(_interface, signature="os")
1165
3439
def ClientRemoved(self, objpath, name):
1166
3440
"D-Bus signal"
1167
3441
pass
1168
3442
3443
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3444
"true"})
1169
3445
@dbus.service.method(_interface, out_signature="ao")
1170
3446
def GetAllClients(self):
1171
3447
"D-Bus method"
1172
return dbus.Array(c.dbus_object_path for c in clients)
1173
1174
@dbus.service.method(_interface, out_signature="a{oa{sv}}")
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"})
3453
@dbus.service.method(_interface,
3454
out_signature="a{oa{sv}}")
1175
3455
def GetAllClientsWithProperties(self):
1176
3456
"D-Bus method"
1177
3457
return dbus.Dictionary(
1178
((c.dbus_object_path, c.GetAllProperties())
1179
for c in clients),
3458
{c.dbus_object_path: c.GetAll(
3459
"se.recompile.Mandos.Client")
3460
for c in tcp_server.clients.values()},
1180
3461
signature="oa{sv}")
1181
3462
1182
3463
@dbus.service.method(_interface, in_signature="o")
1183
3464
def RemoveClient(self, object_path):
1184
3465
"D-Bus method"
1185
for c in clients:
3466
for c in tcp_server.clients.values():
1186
3467
if c.dbus_object_path == object_path:
1187
clients.remove(c)
1188
# Don't signal anything except ClientRemoved
1189
c.use_dbus = False
1190
c.disable()
1191
# Emit D-Bus signal
1192
self.ClientRemoved(object_path, c.name)
3468
del tcp_server.clients[c.name]
3469
c.remove_from_connection()
3470
# Don't signal the disabling
3471
c.disable(quiet=True)
3472
# Emit D-Bus signal for removal
3473
self.client_removed_signal(c)
1193
3474
return
1194
raise KeyError
1195
3475
raise KeyError(object_path)
3476
1196
3477
del _interface
1197
1198
mandos_server = MandosServer()
1199
1200
for client in clients:
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
3522
def cleanup():
3523
"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
3586
while tcp_server.clients:
3587
name, client = tcp_server.clients.popitem()
3588
if use_dbus:
3589
client.remove_from_connection()
3590
# Don't signal the disabling
3591
client.disable(quiet=True)
3592
# Emit D-Bus signal for removal
3593
if use_dbus:
3594
mandos_dbus_service.client_removed_signal(client)
3595
client_settings.clear()
3596
3597
atexit.register(cleanup)
3598
3599
for client in tcp_server.clients.values():
1201
3600
if use_dbus:
1202
# Emit D-Bus signal
1203
mandos_server.ClientAdded(client.dbus_object_path,
1204
client.GetAllProperties())
1205
client.enable()
1206
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
1207
3607
tcp_server.enable()
1208
3608
tcp_server.server_activate()
1209
3609
1210
3610
# Find out what port we got
1211
service.port = tcp_server.socket.getsockname()[1]
3611
if zeroconf:
3612
service.port = tcp_server.socket.getsockname()[1]
1212
3613
if use_ipv6:
1213
logger.info(u"Now listening on address %r, port %d,"
1214
" flowinfo %d, scope_id %d"
1215
% tcp_server.socket.getsockname())
3614
logger.info("Now listening on address %r, port %d,"
3615
" flowinfo %d, scope_id %d",
3616
*tcp_server.socket.getsockname())
1216
3617
else: # IPv4
1217
logger.info(u"Now listening on address %r, port %d"
1218
% tcp_server.socket.getsockname())
1219
1220
#service.interface = tcp_server.socket.getsockname()[3]
1221
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
1222
3623
try:
1223
# From the Avahi example code
1224
server.connect_to_signal("StateChanged", server_state_changed)
1225
try:
1226
server_state_changed(server.GetState())
1227
except dbus.exceptions.DBusException, error:
1228
logger.critical(u"DBusException: %s", error)
1229
sys.exit(1)
1230
# End of Avahi example code
1231
1232
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
1233
lambda *args, **kwargs:
1234
(tcp_server.handle_request
1235
(*args[2:], **kwargs) or True))
1236
1237
logger.debug(u"Starting main loop")
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
3640
logger.debug("Starting main loop")
1238
3641
main_loop.run()
1239
except AvahiError, error:
1240
logger.critical(u"AvahiError: %s", error)
3642
except AvahiError as error:
3643
logger.critical("Avahi Error", exc_info=error)
3644
cleanup()
1241
3645
sys.exit(1)
1242
3646
except KeyboardInterrupt:
1243
3647
if debug:
1244
print >> sys.stderr
3648
print("", file=sys.stderr)
1245
3649
logger.debug("Server received KeyboardInterrupt")
1246
3650
logger.debug("Server exiting")
3651
# Must run before the D-Bus bus name gets deregistered
3652
cleanup()
3653
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
1247
3670
1248
3671
if __name__ == '__main__':
1249
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()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0