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- Committer: Teddy Hogeborn
- Date: 2009-09-22 12:48:07 UTC
- mto: (24.1.146 mandos) (237.12.2 mandos-persistent) (299.1.1 release) (300.1.1 release) (301.1.1 release)
- mto: This revision was merged to the branch mainline in revision 270.
- Revision ID: teddy@fukt.bsnet.se-20090922124807-i2cr0zv4vxjv38g4
* mandos-ctl: Made work again after D-Bus API changes.
(datetime_to_milliseconds): Renamed to "timedelta_to_milliseconds".
All callers changed.
(milliseconds_to_string): Use clearer mapping string format.
(string_to_delta): Add some comments.
(datetime_to_milliseconds): Renamed to "timedelta_to_milliseconds".
All callers changed.
(milliseconds_to_string): Use clearer mapping string format.
(string_to_delta): Add some comments.
- files added:
- initramfs-tools-hook-conf
- files removed:
- DBUS-API
- debian/source
- debian/tests
- debian/upstream
- dracut-module
- network-hooks.d
- plugin-helpers
- files modified:
- .bzrignore
added
removed
mandos
1
#!/usr/bin/python3 -bI
2
# -*- mode: python; after-save-hook: (lambda () (let ((command (if (fboundp 'file-local-name) (file-local-name (buffer-file-name)) (or (file-remote-p (buffer-file-name) 'localname) (buffer-file-name))))) (if (= (progn (if (get-buffer "*Test*") (kill-buffer "*Test*")) (process-file-shell-command (format "%s --check" (shell-quote-argument command)) nil "*Test*")) 0) (let ((w (get-buffer-window "*Test*"))) (if w (delete-window w))) (progn (with-current-buffer "*Test*" (compilation-mode)) (display-buffer "*Test*" '(display-buffer-in-side-window)))))); coding: utf-8 -*-
3
#
1
#!/usr/bin/python
2
# -*- mode: python; coding: utf-8 -*-
3
#
4
4
# Mandos server - give out binary blobs to connecting clients.
5
#
5
#
6
6
# This program is partly derived from an example program for an Avahi
7
7
# service publisher, downloaded from
8
8
# <http://avahi.org/wiki/PythonPublishExample>. This includes the
9
9
# methods "add", "remove", "server_state_changed",
10
10
# "entry_group_state_changed", "cleanup", and "activate" in the
11
11
# "AvahiService" class, and some lines in "main".
12
#
12
#
13
13
# Everything else is
14
# Copyright © 2008-2020 Teddy Hogeborn
15
# Copyright © 2008-2020 Björn Påhlsson
16
#
17
# This file is part of Mandos.
18
#
19
# Mandos is free software: you can redistribute it and/or modify it
20
# under the terms of the GNU General Public License as published by
14
# Copyright © 2008,2009 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
21
19
# the Free Software Foundation, either version 3 of the License, or
22
20
# (at your option) any later version.
23
21
#
24
# Mandos is distributed in the hope that it will be useful, but
25
# WITHOUT ANY WARRANTY; without even the implied warranty of
22
# This program is distributed in the hope that it will be useful,
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
26
24
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
27
25
# GNU General Public License for more details.
28
#
26
#
29
27
# You should have received a copy of the GNU General Public License
30
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
31
#
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
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 as socketserver
47
37
import socket
48
import argparse
38
import optparse
49
39
import datetime
50
40
import errno
51
try:
52
import ConfigParser as configparser
53
except ImportError:
54
import configparser
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 as configparser
55
48
import sys
56
49
import re
57
50
import os
62
55
import logging
63
56
import logging.handlers
64
57
import pwd
65
import contextlib
58
from contextlib import closing
66
59
import struct
67
60
import fcntl
68
61
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
83
62
84
63
import dbus
85
64
import dbus.service
86
import gi
87
from gi.repository import GLib
65
import gobject
66
import avahi
88
67
from dbus.mainloop.glib import DBusGMainLoop
89
68
import ctypes
90
69
import ctypes.util
91
70
import xml.dom.minidom
92
71
import inspect
93
72
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:
73
try:
122
74
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
123
75
except AttributeError:
124
76
try:
125
# This is where SO_BINDTODEVICE was up to and including Python
126
# 2.6, and also 3.2:
127
77
from IN import SO_BINDTODEVICE
128
78
except ImportError:
129
# In Python 2.7 it seems to have been removed entirely.
130
# Try running the C preprocessor:
131
try:
132
cc = subprocess.Popen(["cc", "--language=c", "-E",
133
"/dev/stdin"],
134
stdin=subprocess.PIPE,
135
stdout=subprocess.PIPE)
136
stdout = cc.communicate(
137
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
138
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
139
except (OSError, ValueError, IndexError):
140
# No value found
141
SO_BINDTODEVICE = None
142
143
if sys.version_info < (3, 2):
144
configparser.Configparser = configparser.SafeConfigParser
145
146
version = "1.8.14"
147
stored_state_file = "clients.pickle"
148
149
logger = logging.getLogger()
150
logging.captureWarnings(True) # Show warnings via the logging system
151
syslogger = None
152
153
try:
154
if_nametoindex = ctypes.cdll.LoadLibrary(
155
ctypes.util.find_library("c")).if_nametoindex
156
except (OSError, AttributeError):
157
158
def if_nametoindex(interface):
159
"Get an interface index the hard way, i.e. using fcntl()"
160
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
161
with contextlib.closing(socket.socket()) as s:
162
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
163
struct.pack(b"16s16x", interface))
164
interface_index = struct.unpack("I", ifreq[16:20])[0]
165
return interface_index
166
167
168
def copy_function(func):
169
"""Make a copy of a function"""
170
if sys.version_info.major == 2:
171
return types.FunctionType(func.func_code,
172
func.func_globals,
173
func.func_name,
174
func.func_defaults,
175
func.func_closure)
176
else:
177
return types.FunctionType(func.__code__,
178
func.__globals__,
179
func.__name__,
180
func.__defaults__,
181
func.__closure__)
182
183
184
def initlogger(debug, level=logging.WARNING):
185
"""init logger and add loglevel"""
186
187
global syslogger
188
syslogger = (logging.handlers.SysLogHandler(
189
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
190
address="/dev/log"))
191
syslogger.setFormatter(logging.Formatter
192
('Mandos [%(process)d]: %(levelname)s:'
193
' %(message)s'))
194
logger.addHandler(syslogger)
195
196
if debug:
197
console = logging.StreamHandler()
198
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
199
' [%(process)d]:'
200
' %(levelname)s:'
201
' %(message)s'))
202
logger.addHandler(console)
203
logger.setLevel(level)
204
205
206
class PGPError(Exception):
207
"""Exception if encryption/decryption fails"""
208
pass
209
210
211
class PGPEngine:
212
"""A simple class for OpenPGP symmetric encryption & decryption"""
213
214
def __init__(self):
215
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
216
self.gpg = "gpg"
217
try:
218
output = subprocess.check_output(["gpgconf"])
219
for line in output.splitlines():
220
name, text, path = line.split(b":")
221
if name == b"gpg":
222
self.gpg = path
223
break
224
except OSError as e:
225
if e.errno != errno.ENOENT:
226
raise
227
self.gnupgargs = ['--batch',
228
'--homedir', self.tempdir,
229
'--force-mdc',
230
'--quiet']
231
# Only GPG version 1 has the --no-use-agent option.
232
if self.gpg == b"gpg" or self.gpg.endswith(b"/gpg"):
233
self.gnupgargs.append("--no-use-agent")
234
235
def __enter__(self):
236
return self
237
238
def __exit__(self, exc_type, exc_value, traceback):
239
self._cleanup()
240
return False
241
242
def __del__(self):
243
self._cleanup()
244
245
def _cleanup(self):
246
if self.tempdir is not None:
247
# Delete contents of tempdir
248
for root, dirs, files in os.walk(self.tempdir,
249
topdown=False):
250
for filename in files:
251
os.remove(os.path.join(root, filename))
252
for dirname in dirs:
253
os.rmdir(os.path.join(root, dirname))
254
# Remove tempdir
255
os.rmdir(self.tempdir)
256
self.tempdir = None
257
258
def password_encode(self, password):
259
# Passphrase can not be empty and can not contain newlines or
260
# NUL bytes. So we prefix it and hex encode it.
261
encoded = b"mandos" + binascii.hexlify(password)
262
if len(encoded) > 2048:
263
# GnuPG can't handle long passwords, so encode differently
264
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
265
.replace(b"\n", b"\\n")
266
.replace(b"\0", b"\\x00"))
267
return encoded
268
269
def encrypt(self, data, password):
270
passphrase = self.password_encode(password)
271
with tempfile.NamedTemporaryFile(
272
dir=self.tempdir) as passfile:
273
passfile.write(passphrase)
274
passfile.flush()
275
proc = subprocess.Popen([self.gpg, '--symmetric',
276
'--passphrase-file',
277
passfile.name]
278
+ self.gnupgargs,
279
stdin=subprocess.PIPE,
280
stdout=subprocess.PIPE,
281
stderr=subprocess.PIPE)
282
ciphertext, err = proc.communicate(input=data)
283
if proc.returncode != 0:
284
raise PGPError(err)
285
return ciphertext
286
287
def decrypt(self, data, password):
288
passphrase = self.password_encode(password)
289
with tempfile.NamedTemporaryFile(
290
dir=self.tempdir) as passfile:
291
passfile.write(passphrase)
292
passfile.flush()
293
proc = subprocess.Popen([self.gpg, '--decrypt',
294
'--passphrase-file',
295
passfile.name]
296
+ self.gnupgargs,
297
stdin=subprocess.PIPE,
298
stdout=subprocess.PIPE,
299
stderr=subprocess.PIPE)
300
decrypted_plaintext, err = proc.communicate(input=data)
301
if proc.returncode != 0:
302
raise PGPError(err)
303
return decrypted_plaintext
304
305
306
# Pretend that we have an Avahi module
307
class avahi:
308
"""This isn't so much a class as it is a module-like namespace."""
309
IF_UNSPEC = -1 # avahi-common/address.h
310
PROTO_UNSPEC = -1 # avahi-common/address.h
311
PROTO_INET = 0 # avahi-common/address.h
312
PROTO_INET6 = 1 # avahi-common/address.h
313
DBUS_NAME = "org.freedesktop.Avahi"
314
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
315
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
316
DBUS_PATH_SERVER = "/"
317
318
@staticmethod
319
def string_array_to_txt_array(t):
320
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
321
for s in t), signature="ay")
322
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
323
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
324
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
325
SERVER_INVALID = 0 # avahi-common/defs.h
326
SERVER_REGISTERING = 1 # avahi-common/defs.h
327
SERVER_RUNNING = 2 # avahi-common/defs.h
328
SERVER_COLLISION = 3 # avahi-common/defs.h
329
SERVER_FAILURE = 4 # avahi-common/defs.h
330
79
SO_BINDTODEVICE = None
80
81
82
version = "1.0.12"
83
84
logger = logging.Logger(u'mandos')
85
syslogger = (logging.handlers.SysLogHandler
86
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
87
address = "/dev/log"))
88
syslogger.setFormatter(logging.Formatter
89
(u'Mandos [%(process)d]: %(levelname)s:'
90
u' %(message)s'))
91
logger.addHandler(syslogger)
92
93
console = logging.StreamHandler()
94
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
95
u' %(levelname)s:'
96
u' %(message)s'))
97
logger.addHandler(console)
331
98
332
99
class AvahiError(Exception):
333
100
def __init__(self, value, *args, **kwargs):
334
101
self.value = value
335
return super(AvahiError, self).__init__(value, *args,
336
**kwargs)
337
102
super(AvahiError, self).__init__(value, *args, **kwargs)
103
def __unicode__(self):
104
return unicode(repr(self.value))
338
105
339
106
class AvahiServiceError(AvahiError):
340
107
pass
341
108
342
343
109
class AvahiGroupError(AvahiError):
344
110
pass
345
111
346
112
347
class AvahiService:
113
class AvahiService(object):
348
114
"""An Avahi (Zeroconf) service.
349
115
350
116
Attributes:
351
117
interface: integer; avahi.IF_UNSPEC or an interface index.
352
118
Used to optionally bind to the specified interface.
353
name: string; Example: 'Mandos'
354
type: string; Example: '_mandos._tcp'.
355
See <https://www.iana.org/assignments/service-names-port-numbers>
119
name: string; Example: u'Mandos'
120
type: string; Example: u'_mandos._tcp'.
121
See <http://www.dns-sd.org/ServiceTypes.html>
356
122
port: integer; what port to announce
357
123
TXT: list of strings; TXT record for the service
358
124
domain: string; Domain to publish on, default to .local if empty.
364
130
server: D-Bus Server
365
131
bus: dbus.SystemBus()
366
132
"""
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):
133
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
134
servicetype = None, port = None, TXT = None,
135
domain = u"", host = u"", max_renames = 32768,
136
protocol = avahi.PROTO_UNSPEC, bus = None):
379
137
self.interface = interface
380
138
self.name = name
381
139
self.type = servicetype
389
147
self.group = None # our entry group
390
148
self.server = None
391
149
self.bus = bus
392
self.entry_group_state_changed_match = None
393
394
def rename(self, remove=True):
150
def rename(self):
395
151
"""Derived from the Avahi example code"""
396
152
if self.rename_count >= self.max_renames:
397
logger.critical("No suitable Zeroconf service name found"
398
" after %i retries, exiting.",
153
logger.critical(u"No suitable Zeroconf service name found"
154
u" after %i retries, exiting.",
399
155
self.rename_count)
400
raise AvahiServiceError("Too many renames")
401
self.name = str(
402
self.server.GetAlternativeServiceName(self.name))
156
raise AvahiServiceError(u"Too many renames")
157
self.name = self.server.GetAlternativeServiceName(self.name)
158
logger.info(u"Changing Zeroconf service name to %r ...",
159
unicode(self.name))
160
syslogger.setFormatter(logging.Formatter
161
(u'Mandos (%s) [%%(process)d]:'
162
u' %%(levelname)s: %%(message)s'
163
% self.name))
164
self.remove()
165
self.add()
403
166
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
420
167
def remove(self):
421
168
"""Derived from the Avahi example code"""
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
169
if self.group is not None:
426
170
self.group.Reset()
427
428
171
def add(self):
429
172
"""Derived from the Avahi example code"""
430
self.remove()
431
173
if self.group is None:
432
174
self.group = dbus.Interface(
433
175
self.bus.get_object(avahi.DBUS_NAME,
434
176
self.server.EntryGroupNew()),
435
177
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' ...",
178
self.group.connect_to_signal('StateChanged',
179
self
180
.entry_group_state_changed)
181
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
440
182
self.name, self.type)
441
183
self.group.AddService(
442
184
self.interface,
447
189
dbus.UInt16(self.port),
448
190
avahi.string_array_to_txt_array(self.TXT))
449
191
self.group.Commit()
450
451
192
def entry_group_state_changed(self, state, error):
452
193
"""Derived from the Avahi example code"""
453
logger.debug("Avahi entry group state change: %i", state)
454
194
logger.debug(u"Avahi state change: %i", state)
195
455
196
if state == avahi.ENTRY_GROUP_ESTABLISHED:
456
logger.debug("Zeroconf service established.")
197
logger.debug(u"Zeroconf service established.")
457
198
elif state == avahi.ENTRY_GROUP_COLLISION:
458
logger.info("Zeroconf service name collision.")
199
logger.warning(u"Zeroconf service name collision.")
459
200
self.rename()
460
201
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
202
logger.critical(u"Avahi: Error in group state changed %s",
203
unicode(error))
204
raise AvahiGroupError(u"State changed: %s"
205
% unicode(error))
465
206
def cleanup(self):
466
207
"""Derived from the Avahi example code"""
467
208
if self.group is not None:
468
try:
469
self.group.Free()
470
except (dbus.exceptions.UnknownMethodException,
471
dbus.exceptions.DBusException):
472
pass
209
self.group.Free()
473
210
self.group = None
474
self.remove()
475
476
def server_state_changed(self, state, error=None):
211
def server_state_changed(self, state):
477
212
"""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()
213
if state == avahi.SERVER_COLLISION:
214
logger.error(u"Zeroconf server name collision")
215
self.remove()
492
216
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
217
self.add()
511
218
def activate(self):
512
219
"""Derived from the Avahi example code"""
513
220
if self.server is None:
514
221
self.server = dbus.Interface(
515
222
self.bus.get_object(avahi.DBUS_NAME,
516
avahi.DBUS_PATH_SERVER,
517
follow_name_owner_changes=True),
223
avahi.DBUS_PATH_SERVER),
518
224
avahi.DBUS_INTERFACE_SERVER)
519
self.server.connect_to_signal("StateChanged",
520
self.server_state_changed)
225
self.server.connect_to_signal(u"StateChanged",
226
self.server_state_changed)
521
227
self.server_state_changed(self.server.GetState())
522
228
523
229
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).decode(
598
"utf-8", errors="replace")
599
return super(gnutls.Error, self).__init__(
600
message, *args)
601
602
class CertificateSecurityError(Error):
603
pass
604
605
class PointerTo:
606
def __init__(self, cls):
607
self.cls = cls
608
609
def from_param(self, obj):
610
if not isinstance(obj, self.cls):
611
raise TypeError("Not of type {}: {!r}"
612
.format(self.cls.__name__, obj))
613
return ctypes.byref(obj.from_param(obj))
614
615
class CastToVoidPointer:
616
def __init__(self, cls):
617
self.cls = cls
618
619
def from_param(self, obj):
620
if not isinstance(obj, self.cls):
621
raise TypeError("Not of type {}: {!r}"
622
.format(self.cls.__name__, obj))
623
return ctypes.cast(obj.from_param(obj), ctypes.c_void_p)
624
625
class With_from_param:
626
@classmethod
627
def from_param(cls, obj):
628
return obj._as_parameter_
629
630
# Classes
631
class Credentials(With_from_param):
632
def __init__(self):
633
self._as_parameter_ = gnutls.certificate_credentials_t()
634
gnutls.certificate_allocate_credentials(self)
635
self.type = gnutls.CRD_CERTIFICATE
636
637
def __del__(self):
638
gnutls.certificate_free_credentials(self)
639
640
class ClientSession(With_from_param):
641
def __init__(self, socket, credentials=None):
642
self._as_parameter_ = gnutls.session_t()
643
gnutls_flags = gnutls.CLIENT
644
if gnutls.check_version(b"3.5.6"):
645
gnutls_flags |= gnutls.NO_TICKETS
646
if gnutls.has_rawpk:
647
gnutls_flags |= gnutls.ENABLE_RAWPK
648
gnutls.init(self, gnutls_flags)
649
del gnutls_flags
650
gnutls.set_default_priority(self)
651
gnutls.transport_set_ptr(self, socket.fileno())
652
gnutls.handshake_set_private_extensions(self, True)
653
self.socket = socket
654
if credentials is None:
655
credentials = gnutls.Credentials()
656
gnutls.credentials_set(self, credentials.type,
657
credentials)
658
self.credentials = credentials
659
660
def __del__(self):
661
gnutls.deinit(self)
662
663
def handshake(self):
664
return gnutls.handshake(self)
665
666
def send(self, data):
667
data = bytes(data)
668
data_len = len(data)
669
while data_len > 0:
670
data_len -= gnutls.record_send(self, data[-data_len:],
671
data_len)
672
673
def bye(self):
674
return gnutls.bye(self, gnutls.SHUT_RDWR)
675
676
# Error handling functions
677
def _error_code(result):
678
"""A function to raise exceptions on errors, suitable
679
for the 'restype' attribute on ctypes functions"""
680
if result >= gnutls.E_SUCCESS:
681
return result
682
if result == gnutls.E_NO_CERTIFICATE_FOUND:
683
raise gnutls.CertificateSecurityError(code=result)
684
raise gnutls.Error(code=result)
685
686
def _retry_on_error(result, func, arguments,
687
_error_code=_error_code):
688
"""A function to retry on some errors, suitable
689
for the 'errcheck' attribute on ctypes functions"""
690
while result < gnutls.E_SUCCESS:
691
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
692
return _error_code(result)
693
result = func(*arguments)
694
return result
695
696
# Unless otherwise indicated, the function declarations below are
697
# all from the gnutls/gnutls.h C header file.
698
699
# Functions
700
priority_set_direct = _library.gnutls_priority_set_direct
701
priority_set_direct.argtypes = [ClientSession, ctypes.c_char_p,
702
ctypes.POINTER(ctypes.c_char_p)]
703
priority_set_direct.restype = _error_code
704
705
init = _library.gnutls_init
706
init.argtypes = [PointerTo(ClientSession), ctypes.c_int]
707
init.restype = _error_code
708
709
set_default_priority = _library.gnutls_set_default_priority
710
set_default_priority.argtypes = [ClientSession]
711
set_default_priority.restype = _error_code
712
713
record_send = _library.gnutls_record_send
714
record_send.argtypes = [ClientSession, ctypes.c_void_p,
715
ctypes.c_size_t]
716
record_send.restype = ctypes.c_ssize_t
717
record_send.errcheck = _retry_on_error
718
719
certificate_allocate_credentials = (
720
_library.gnutls_certificate_allocate_credentials)
721
certificate_allocate_credentials.argtypes = [
722
PointerTo(Credentials)]
723
certificate_allocate_credentials.restype = _error_code
724
725
certificate_free_credentials = (
726
_library.gnutls_certificate_free_credentials)
727
certificate_free_credentials.argtypes = [Credentials]
728
certificate_free_credentials.restype = None
729
730
handshake_set_private_extensions = (
731
_library.gnutls_handshake_set_private_extensions)
732
handshake_set_private_extensions.argtypes = [ClientSession,
733
ctypes.c_int]
734
handshake_set_private_extensions.restype = None
735
736
credentials_set = _library.gnutls_credentials_set
737
credentials_set.argtypes = [ClientSession, credentials_type_t,
738
CastToVoidPointer(Credentials)]
739
credentials_set.restype = _error_code
740
741
strerror = _library.gnutls_strerror
742
strerror.argtypes = [ctypes.c_int]
743
strerror.restype = ctypes.c_char_p
744
745
certificate_type_get = _library.gnutls_certificate_type_get
746
certificate_type_get.argtypes = [ClientSession]
747
certificate_type_get.restype = _error_code
748
749
certificate_get_peers = _library.gnutls_certificate_get_peers
750
certificate_get_peers.argtypes = [ClientSession,
751
ctypes.POINTER(ctypes.c_uint)]
752
certificate_get_peers.restype = ctypes.POINTER(datum_t)
753
754
global_set_log_level = _library.gnutls_global_set_log_level
755
global_set_log_level.argtypes = [ctypes.c_int]
756
global_set_log_level.restype = None
757
758
global_set_log_function = _library.gnutls_global_set_log_function
759
global_set_log_function.argtypes = [log_func]
760
global_set_log_function.restype = None
761
762
deinit = _library.gnutls_deinit
763
deinit.argtypes = [ClientSession]
764
deinit.restype = None
765
766
handshake = _library.gnutls_handshake
767
handshake.argtypes = [ClientSession]
768
handshake.restype = ctypes.c_int
769
handshake.errcheck = _retry_on_error
770
771
transport_set_ptr = _library.gnutls_transport_set_ptr
772
transport_set_ptr.argtypes = [ClientSession, transport_ptr_t]
773
transport_set_ptr.restype = None
774
775
bye = _library.gnutls_bye
776
bye.argtypes = [ClientSession, close_request_t]
777
bye.restype = ctypes.c_int
778
bye.errcheck = _retry_on_error
779
780
check_version = _library.gnutls_check_version
781
check_version.argtypes = [ctypes.c_char_p]
782
check_version.restype = ctypes.c_char_p
783
784
_need_version = b"3.3.0"
785
if check_version(_need_version) is None:
786
raise self.Error("Needs GnuTLS {} or later"
787
.format(_need_version))
788
789
_tls_rawpk_version = b"3.6.6"
790
has_rawpk = bool(check_version(_tls_rawpk_version))
791
792
if has_rawpk:
793
# Types
794
class pubkey_st(ctypes.Structure):
795
_fields = []
796
pubkey_t = ctypes.POINTER(pubkey_st)
797
798
x509_crt_fmt_t = ctypes.c_int
799
800
# All the function declarations below are from
801
# gnutls/abstract.h
802
pubkey_init = _library.gnutls_pubkey_init
803
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
804
pubkey_init.restype = _error_code
805
806
pubkey_import = _library.gnutls_pubkey_import
807
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
808
x509_crt_fmt_t]
809
pubkey_import.restype = _error_code
810
811
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
812
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
813
ctypes.POINTER(ctypes.c_ubyte),
814
ctypes.POINTER(ctypes.c_size_t)]
815
pubkey_get_key_id.restype = _error_code
816
817
pubkey_deinit = _library.gnutls_pubkey_deinit
818
pubkey_deinit.argtypes = [pubkey_t]
819
pubkey_deinit.restype = None
820
else:
821
# All the function declarations below are from
822
# gnutls/openpgp.h
823
824
openpgp_crt_init = _library.gnutls_openpgp_crt_init
825
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
826
openpgp_crt_init.restype = _error_code
827
828
openpgp_crt_import = _library.gnutls_openpgp_crt_import
829
openpgp_crt_import.argtypes = [openpgp_crt_t,
830
ctypes.POINTER(datum_t),
831
openpgp_crt_fmt_t]
832
openpgp_crt_import.restype = _error_code
833
834
openpgp_crt_verify_self = \
835
_library.gnutls_openpgp_crt_verify_self
836
openpgp_crt_verify_self.argtypes = [
837
openpgp_crt_t,
838
ctypes.c_uint,
839
ctypes.POINTER(ctypes.c_uint),
840
]
841
openpgp_crt_verify_self.restype = _error_code
842
843
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
844
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
845
openpgp_crt_deinit.restype = None
846
847
openpgp_crt_get_fingerprint = (
848
_library.gnutls_openpgp_crt_get_fingerprint)
849
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
850
ctypes.c_void_p,
851
ctypes.POINTER(
852
ctypes.c_size_t)]
853
openpgp_crt_get_fingerprint.restype = _error_code
854
855
if check_version(b"3.6.4"):
856
certificate_type_get2 = _library.gnutls_certificate_type_get2
857
certificate_type_get2.argtypes = [ClientSession, ctypes.c_int]
858
certificate_type_get2.restype = _error_code
859
860
# Remove non-public functions
861
del _error_code, _retry_on_error
862
863
864
def call_pipe(connection, # : multiprocessing.Connection
865
func, *args, **kwargs):
866
"""This function is meant to be called by multiprocessing.Process
867
868
This function runs func(*args, **kwargs), and writes the resulting
869
return value on the provided multiprocessing.Connection.
870
"""
871
connection.send(func(*args, **kwargs))
872
connection.close()
873
874
875
class Client:
230
class Client(object):
876
231
"""A representation of a client host served by this server.
877
232
878
233
Attributes:
879
approved: bool(); 'None' if not yet approved/disapproved
880
approval_delay: datetime.timedelta(); Time to wait for approval
881
approval_duration: datetime.timedelta(); Duration of one approval
882
checker: multiprocessing.Process(); a running checker process used
883
to see if the client lives. 'None' if no process is
884
running.
885
checker_callback_tag: a GLib event source tag, or None
886
checker_command: string; External command which is run to check
887
if client lives. %() expansions are done at
888
runtime with vars(self) as dict, so that for
889
instance %(name)s can be used in the command.
890
checker_initiator_tag: a GLib event source tag, or None
234
name: string; from the config file, used in log messages and
235
D-Bus identifiers
236
fingerprint: string (40 or 32 hexadecimal digits); used to
237
uniquely identify the client
238
secret: bytestring; sent verbatim (over TLS) to client
239
host: string; available for use by the checker command
891
240
created: datetime.datetime(); (UTC) object creation
892
client_structure: Object describing what attributes a client has
893
and is used for storing the client at exit
894
current_checker_command: string; current running checker_command
895
disable_initiator_tag: a GLib event source tag, or None
241
last_enabled: datetime.datetime(); (UTC)
896
242
enabled: bool()
897
fingerprint: string (40 or 32 hexadecimal digits); used to
898
uniquely identify an OpenPGP client
899
key_id: string (64 hexadecimal digits); used to uniquely identify
900
a client using raw public keys
901
host: string; available for use by the checker command
902
interval: datetime.timedelta(); How often to start a new checker
903
last_approval_request: datetime.datetime(); (UTC) or None
904
243
last_checked_ok: datetime.datetime(); (UTC) or None
905
last_checker_status: integer between 0 and 255 reflecting exit
906
status of last checker. -1 reflects crashed
907
checker, -2 means no checker completed yet.
908
last_checker_signal: The signal which killed the last checker, if
909
last_checker_status is -1
910
last_enabled: datetime.datetime(); (UTC) or None
911
name: string; from the config file, used in log messages and
912
D-Bus identifiers
913
secret: bytestring; sent verbatim (over TLS) to client
914
244
timeout: datetime.timedelta(); How long from last_checked_ok
915
until this client is disabled
916
extended_timeout: extra long timeout when secret has been sent
917
runtime_expansions: Allowed attributes for runtime expansion.
918
expires: datetime.datetime(); time (UTC) when a client will be
919
disabled, or None
920
server_settings: The server_settings dict from main()
245
until this client is invalid
246
interval: datetime.timedelta(); How often to start a new checker
247
disable_hook: If set, called by disable() as disable_hook(self)
248
checker: subprocess.Popen(); a running checker process used
249
to see if the client lives.
250
'None' if no process is running.
251
checker_initiator_tag: a gobject event source tag, or None
252
disable_initiator_tag: - '' -
253
checker_callback_tag: - '' -
254
checker_command: string; External command which is run to check if
255
client lives. %() expansions are done at
256
runtime with vars(self) as dict, so that for
257
instance %(name)s can be used in the command.
258
current_checker_command: string; current running checker_command
921
259
"""
922
923
runtime_expansions = ("approval_delay", "approval_duration",
924
"created", "enabled", "expires", "key_id",
925
"fingerprint", "host", "interval",
926
"last_approval_request", "last_checked_ok",
927
"last_enabled", "name", "timeout")
928
client_defaults = {
929
"timeout": "PT5M",
930
"extended_timeout": "PT15M",
931
"interval": "PT2M",
932
"checker": "fping -q -- %%(host)s",
933
"host": "",
934
"approval_delay": "PT0S",
935
"approval_duration": "PT1S",
936
"approved_by_default": "True",
937
"enabled": "True",
938
}
939
260
940
261
@staticmethod
941
def config_parser(config):
942
"""Construct a new dict of client settings of this form:
943
{ client_name: {setting_name: value, ...}, ...}
944
with exceptions for any special settings as defined above.
945
NOTE: Must be a pure function. Must return the same result
946
value given the same arguments.
947
"""
948
settings = {}
949
for client_name in config.sections():
950
section = dict(config.items(client_name))
951
client = settings[client_name] = {}
952
953
client["host"] = section["host"]
954
# Reformat values from string types to Python types
955
client["approved_by_default"] = config.getboolean(
956
client_name, "approved_by_default")
957
client["enabled"] = config.getboolean(client_name,
958
"enabled")
959
960
# Uppercase and remove spaces from key_id and fingerprint
961
# for later comparison purposes with return value from the
962
# key_id() and fingerprint() functions
963
client["key_id"] = (section.get("key_id", "").upper()
964
.replace(" ", ""))
965
client["fingerprint"] = (section["fingerprint"].upper()
966
.replace(" ", ""))
967
if "secret" in section:
968
client["secret"] = codecs.decode(section["secret"]
969
.encode("utf-8"),
970
"base64")
971
elif "secfile" in section:
972
with open(os.path.expanduser(os.path.expandvars
973
(section["secfile"])),
974
"rb") as secfile:
975
client["secret"] = secfile.read()
976
else:
977
raise TypeError("No secret or secfile for section {}"
978
.format(section))
979
client["timeout"] = string_to_delta(section["timeout"])
980
client["extended_timeout"] = string_to_delta(
981
section["extended_timeout"])
982
client["interval"] = string_to_delta(section["interval"])
983
client["approval_delay"] = string_to_delta(
984
section["approval_delay"])
985
client["approval_duration"] = string_to_delta(
986
section["approval_duration"])
987
client["checker_command"] = section["checker"]
988
client["last_approval_request"] = None
989
client["last_checked_ok"] = None
990
client["last_checker_status"] = -2
991
992
return settings
993
994
def __init__(self, settings, name=None, server_settings=None):
262
def _timedelta_to_milliseconds(td):
263
"Convert a datetime.timedelta() to milliseconds"
264
return ((td.days * 24 * 60 * 60 * 1000)
265
+ (td.seconds * 1000)
266
+ (td.microseconds // 1000))
267
268
def timeout_milliseconds(self):
269
"Return the 'timeout' attribute in milliseconds"
270
return self._timedelta_to_milliseconds(self.timeout)
271
272
def interval_milliseconds(self):
273
"Return the 'interval' attribute in milliseconds"
274
return self._timedelta_to_milliseconds(self.interval)
275
276
def __init__(self, name = None, disable_hook=None, config=None):
277
"""Note: the 'checker' key in 'config' sets the
278
'checker_command' attribute and *not* the 'checker'
279
attribute."""
995
280
self.name = name
996
if server_settings is None:
997
server_settings = {}
998
self.server_settings = server_settings
999
# adding all client settings
1000
for setting, value in settings.items():
1001
setattr(self, setting, value)
1002
1003
if self.enabled:
1004
if not hasattr(self, "last_enabled"):
1005
self.last_enabled = datetime.datetime.utcnow()
1006
if not hasattr(self, "expires"):
1007
self.expires = (datetime.datetime.utcnow()
1008
+ self.timeout)
281
if config is None:
282
config = {}
283
logger.debug(u"Creating client %r", self.name)
284
# Uppercase and remove spaces from fingerprint for later
285
# comparison purposes with return value from the fingerprint()
286
# function
287
self.fingerprint = (config[u"fingerprint"].upper()
288
.replace(u" ", u""))
289
logger.debug(u" Fingerprint: %s", self.fingerprint)
290
if u"secret" in config:
291
self.secret = config[u"secret"].decode(u"base64")
292
elif u"secfile" in config:
293
with closing(open(os.path.expanduser
294
(os.path.expandvars
295
(config[u"secfile"])))) as secfile:
296
self.secret = secfile.read()
1009
297
else:
1010
self.last_enabled = None
1011
self.expires = None
1012
1013
logger.debug("Creating client %r", self.name)
1014
logger.debug(" Key ID: %s", self.key_id)
1015
logger.debug(" Fingerprint: %s", self.fingerprint)
1016
self.created = settings.get("created",
1017
datetime.datetime.utcnow())
1018
1019
# attributes specific for this server instance
298
raise TypeError(u"No secret or secfile for client %s"
299
% self.name)
300
self.host = config.get(u"host", u"")
301
self.created = datetime.datetime.utcnow()
302
self.enabled = False
303
self.last_enabled = None
304
self.last_checked_ok = None
305
self.timeout = string_to_delta(config[u"timeout"])
306
self.interval = string_to_delta(config[u"interval"])
307
self.disable_hook = disable_hook
1020
308
self.checker = None
1021
309
self.checker_initiator_tag = None
1022
310
self.disable_initiator_tag = None
1023
311
self.checker_callback_tag = None
312
self.checker_command = config[u"checker"]
1024
313
self.current_checker_command = None
1025
self.approved = None
1026
self.approvals_pending = 0
1027
self.changedstate = multiprocessing_manager.Condition(
1028
multiprocessing_manager.Lock())
1029
self.client_structure = [attr
1030
for attr in self.__dict__.keys()
1031
if not attr.startswith("_")]
1032
self.client_structure.append("client_structure")
1033
1034
for name, t in inspect.getmembers(
1035
type(self), lambda obj: isinstance(obj, property)):
1036
if not name.startswith("_"):
1037
self.client_structure.append(name)
1038
1039
# Send notice to process children that client state has changed
1040
def send_changedstate(self):
1041
with self.changedstate:
1042
self.changedstate.notify_all()
1043
314
self.last_connect = None
315
1044
316
def enable(self):
1045
317
"""Start this client's checker and timeout hooks"""
1046
if getattr(self, "enabled", False):
318
if getattr(self, u"enabled", False):
1047
319
# Already enabled
1048
320
return
1049
self.expires = datetime.datetime.utcnow() + self.timeout
1050
self.enabled = True
1051
321
self.last_enabled = datetime.datetime.utcnow()
1052
self.init_checker()
1053
self.send_changedstate()
1054
1055
def disable(self, quiet=True):
322
# Schedule a new checker to be started an 'interval' from now,
323
# and every interval from then on.
324
self.checker_initiator_tag = (gobject.timeout_add
325
(self.interval_milliseconds(),
326
self.start_checker))
327
# Also start a new checker *right now*.
328
self.start_checker()
329
# Schedule a disable() when 'timeout' has passed
330
self.disable_initiator_tag = (gobject.timeout_add
331
(self.timeout_milliseconds(),
332
self.disable))
333
self.enabled = True
334
335
def disable(self):
1056
336
"""Disable this client."""
1057
337
if not getattr(self, "enabled", False):
1058
338
return False
1059
if not quiet:
1060
logger.info("Disabling client %s", self.name)
1061
if getattr(self, "disable_initiator_tag", None) is not None:
1062
GLib.source_remove(self.disable_initiator_tag)
339
logger.info(u"Disabling client %s", self.name)
340
if getattr(self, u"disable_initiator_tag", False):
341
gobject.source_remove(self.disable_initiator_tag)
1063
342
self.disable_initiator_tag = None
1064
self.expires = None
1065
if getattr(self, "checker_initiator_tag", None) is not None:
1066
GLib.source_remove(self.checker_initiator_tag)
343
if getattr(self, u"checker_initiator_tag", False):
344
gobject.source_remove(self.checker_initiator_tag)
1067
345
self.checker_initiator_tag = None
1068
346
self.stop_checker()
347
if self.disable_hook:
348
self.disable_hook(self)
1069
349
self.enabled = False
1070
if not quiet:
1071
self.send_changedstate()
1072
# Do not run this again if called by a GLib.timeout_add
350
# Do not run this again if called by a gobject.timeout_add
1073
351
return False
1074
352
1075
353
def __del__(self):
354
self.disable_hook = None
1076
355
self.disable()
1077
1078
def init_checker(self):
1079
# Schedule a new checker to be started an 'interval' from now,
1080
# and every interval from then on.
1081
if self.checker_initiator_tag is not None:
1082
GLib.source_remove(self.checker_initiator_tag)
1083
self.checker_initiator_tag = GLib.timeout_add(
1084
random.randrange(int(self.interval.total_seconds() * 1000
1085
+ 1)),
1086
self.start_checker)
1087
# Schedule a disable() when 'timeout' has passed
1088
if self.disable_initiator_tag is not None:
1089
GLib.source_remove(self.disable_initiator_tag)
1090
self.disable_initiator_tag = GLib.timeout_add(
1091
int(self.timeout.total_seconds() * 1000), self.disable)
1092
# Also start a new checker *right now*.
1093
self.start_checker()
1094
1095
def checker_callback(self, source, condition, connection,
1096
command):
356
357
def checker_callback(self, pid, condition, command):
1097
358
"""The checker has completed, so take appropriate actions."""
1098
# Read return code from connection (see call_pipe)
1099
returncode = connection.recv()
1100
connection.close()
1101
if self.checker is not None:
1102
self.checker.join()
1103
359
self.checker_callback_tag = None
1104
360
self.checker = None
1105
1106
if returncode >= 0:
1107
self.last_checker_status = returncode
1108
self.last_checker_signal = None
1109
if self.last_checker_status == 0:
1110
logger.info("Checker for %(name)s succeeded",
361
if os.WIFEXITED(condition):
362
exitstatus = os.WEXITSTATUS(condition)
363
if exitstatus == 0:
364
logger.info(u"Checker for %(name)s succeeded",
1111
365
vars(self))
1112
366
self.checked_ok()
1113
367
else:
1114
logger.info("Checker for %(name)s failed", vars(self))
368
logger.info(u"Checker for %(name)s failed",
369
vars(self))
1115
370
else:
1116
self.last_checker_status = -1
1117
self.last_checker_signal = -returncode
1118
logger.warning("Checker for %(name)s crashed?",
371
logger.warning(u"Checker for %(name)s crashed?",
1119
372
vars(self))
1120
return False
1121
373
1122
374
def checked_ok(self):
1123
"""Assert that the client has been seen, alive and well."""
375
"""Bump up the timeout for this client.
376
377
This should only be called when the client has been seen,
378
alive and well.
379
"""
1124
380
self.last_checked_ok = datetime.datetime.utcnow()
1125
self.last_checker_status = 0
1126
self.last_checker_signal = None
1127
self.bump_timeout()
1128
1129
def bump_timeout(self, timeout=None):
1130
"""Bump up the timeout for this client."""
1131
if timeout is None:
1132
timeout = self.timeout
1133
if self.disable_initiator_tag is not None:
1134
GLib.source_remove(self.disable_initiator_tag)
1135
self.disable_initiator_tag = None
1136
if getattr(self, "enabled", False):
1137
self.disable_initiator_tag = GLib.timeout_add(
1138
int(timeout.total_seconds() * 1000), self.disable)
1139
self.expires = datetime.datetime.utcnow() + timeout
1140
1141
def need_approval(self):
1142
self.last_approval_request = datetime.datetime.utcnow()
1143
381
gobject.source_remove(self.disable_initiator_tag)
382
self.disable_initiator_tag = (gobject.timeout_add
383
(self.timeout_milliseconds(),
384
self.disable))
385
1144
386
def start_checker(self):
1145
387
"""Start a new checker subprocess if one is not running.
1146
388
1147
389
If a checker already exists, leave it running and do
1148
390
nothing."""
1149
391
# The reason for not killing a running checker is that if we
1150
# did that, and if a checker (for some reason) started running
1151
# slowly and taking more than 'interval' time, then the client
1152
# would inevitably timeout, since no checker would get a
1153
# chance to run to completion. If we instead leave running
392
# did that, then if a checker (for some reason) started
393
# running slowly and taking more than 'interval' time, the
394
# client would inevitably timeout, since no checker would get
395
# a chance to run to completion. If we instead leave running
1154
396
# checkers alone, the checker would have to take more time
1155
# than 'timeout' for the client to be disabled, which is as it
1156
# should be.
1157
1158
if self.checker is not None and not self.checker.is_alive():
1159
logger.warning("Checker was not alive; joining")
1160
self.checker.join()
1161
self.checker = None
397
# than 'timeout' for the client to be declared invalid, which
398
# is as it should be.
399
400
# If a checker exists, make sure it is not a zombie
401
if self.checker is not None:
402
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
403
if pid:
404
logger.warning(u"Checker was a zombie")
405
gobject.source_remove(self.checker_callback_tag)
406
self.checker_callback(pid, status,
407
self.current_checker_command)
1162
408
# Start a new checker if needed
1163
409
if self.checker is None:
1164
# Escape attributes for the shell
1165
escaped_attrs = {
1166
attr: shlex.quote(str(getattr(self, attr)))
1167
for attr in self.runtime_expansions}
1168
410
try:
1169
command = self.checker_command % escaped_attrs
1170
except TypeError as error:
1171
logger.error('Could not format string "%s"',
1172
self.checker_command,
1173
exc_info=error)
1174
return True # Try again later
411
# In case checker_command has exactly one % operator
412
command = self.checker_command % self.host
413
except TypeError:
414
# Escape attributes for the shell
415
escaped_attrs = dict((key,
416
re.escape(unicode(str(val),
417
errors=
418
u'replace')))
419
for key, val in
420
vars(self).iteritems())
421
try:
422
command = self.checker_command % escaped_attrs
423
except TypeError, error:
424
logger.error(u'Could not format string "%s":'
425
u' %s', self.checker_command, error)
426
return True # Try again later
1175
427
self.current_checker_command = command
1176
logger.info("Starting checker %r for %s", command,
1177
self.name)
1178
# We don't need to redirect stdout and stderr, since
1179
# in normal mode, that is already done by daemon(),
1180
# and in debug mode we don't want to. (Stdin is
1181
# always replaced by /dev/null.)
1182
# The exception is when not debugging but nevertheless
1183
# running in the foreground; use the previously
1184
# created wnull.
1185
popen_args = {"close_fds": True,
1186
"shell": True,
1187
"cwd": "/"}
1188
if (not self.server_settings["debug"]
1189
and self.server_settings["foreground"]):
1190
popen_args.update({"stdout": wnull,
1191
"stderr": wnull})
1192
pipe = multiprocessing.Pipe(duplex=False)
1193
self.checker = multiprocessing.Process(
1194
target=call_pipe,
1195
args=(pipe[1], subprocess.call, command),
1196
kwargs=popen_args)
1197
self.checker.start()
1198
self.checker_callback_tag = GLib.io_add_watch(
1199
GLib.IOChannel.unix_new(pipe[0].fileno()),
1200
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
1201
self.checker_callback, pipe[0], command)
1202
# Re-run this periodically if run by GLib.timeout_add
428
try:
429
logger.info(u"Starting checker %r for %s",
430
command, self.name)
431
# We don't need to redirect stdout and stderr, since
432
# in normal mode, that is already done by daemon(),
433
# and in debug mode we don't want to. (Stdin is
434
# always replaced by /dev/null.)
435
self.checker = subprocess.Popen(command,
436
close_fds=True,
437
shell=True, cwd=u"/")
438
self.checker_callback_tag = (gobject.child_watch_add
439
(self.checker.pid,
440
self.checker_callback,
441
data=command))
442
# The checker may have completed before the gobject
443
# watch was added. Check for this.
444
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
445
if pid:
446
gobject.source_remove(self.checker_callback_tag)
447
self.checker_callback(pid, status, command)
448
except OSError, error:
449
logger.error(u"Failed to start subprocess: %s",
450
error)
451
# Re-run this periodically if run by gobject.timeout_add
1203
452
return True
1204
453
1205
454
def stop_checker(self):
1206
455
"""Force the checker process, if any, to stop."""
1207
456
if self.checker_callback_tag:
1208
GLib.source_remove(self.checker_callback_tag)
457
gobject.source_remove(self.checker_callback_tag)
1209
458
self.checker_callback_tag = None
1210
if getattr(self, "checker", None) is None:
459
if getattr(self, u"checker", None) is None:
1211
460
return
1212
logger.debug("Stopping checker for %(name)s", vars(self))
1213
self.checker.terminate()
461
logger.debug(u"Stopping checker for %(name)s", vars(self))
462
try:
463
os.kill(self.checker.pid, signal.SIGTERM)
464
#os.sleep(0.5)
465
#if self.checker.poll() is None:
466
# os.kill(self.checker.pid, signal.SIGKILL)
467
except OSError, error:
468
if error.errno != errno.ESRCH: # No such process
469
raise
1214
470
self.checker = None
1215
1216
1217
def dbus_service_property(dbus_interface,
1218
signature="v",
1219
access="readwrite",
1220
byte_arrays=False):
471
472
def still_valid(self):
473
"""Has the timeout not yet passed for this client?"""
474
if not getattr(self, u"enabled", False):
475
return False
476
now = datetime.datetime.utcnow()
477
if self.last_checked_ok is None:
478
return now < (self.created + self.timeout)
479
else:
480
return now < (self.last_checked_ok + self.timeout)
481
482
483
def dbus_service_property(dbus_interface, signature=u"v",
484
access=u"readwrite", byte_arrays=False):
1221
485
"""Decorators for marking methods of a DBusObjectWithProperties to
1222
486
become properties on the D-Bus.
1223
487
1224
488
The decorated method will be called with no arguments by "Get"
1225
489
and with one argument by "Set".
1226
490
1227
491
The parameters, where they are supported, are the same as
1228
492
dbus.service.method, except there is only "signature", since the
1229
493
type from Get() and the type sent to Set() is the same.
1230
494
"""
1231
# Encoding deeply encoded byte arrays is not supported yet by the
1232
# "Set" method, so we fail early here:
1233
if byte_arrays and signature != "ay":
1234
raise ValueError("Byte arrays not supported for non-'ay'"
1235
" signature {!r}".format(signature))
1236
1237
495
def decorator(func):
1238
496
func._dbus_is_property = True
1239
497
func._dbus_interface = dbus_interface
1240
498
func._dbus_signature = signature
1241
499
func._dbus_access = access
1242
500
func._dbus_name = func.__name__
1243
if func._dbus_name.endswith("_dbus_property"):
501
if func._dbus_name.endswith(u"_dbus_property"):
1244
502
func._dbus_name = func._dbus_name[:-14]
1245
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
1246
return func
1247
1248
return decorator
1249
1250
1251
def dbus_interface_annotations(dbus_interface):
1252
"""Decorator for marking functions returning interface annotations
1253
1254
Usage:
1255
1256
@dbus_interface_annotations("org.example.Interface")
1257
def _foo(self): # Function name does not matter
1258
return {"org.freedesktop.DBus.Deprecated": "true",
1259
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1260
"false"}
1261
"""
1262
1263
def decorator(func):
1264
func._dbus_is_interface = True
1265
func._dbus_interface = dbus_interface
1266
func._dbus_name = dbus_interface
1267
return func
1268
1269
return decorator
1270
1271
1272
def dbus_annotations(annotations):
1273
"""Decorator to annotate D-Bus methods, signals or properties
1274
Usage:
1275
1276
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1277
"org.freedesktop.DBus.Property."
1278
"EmitsChangedSignal": "false"})
1279
@dbus_service_property("org.example.Interface", signature="b",
1280
access="r")
1281
def Property_dbus_property(self):
1282
return dbus.Boolean(False)
1283
1284
See also the DBusObjectWithAnnotations class.
1285
"""
1286
1287
def decorator(func):
1288
func._dbus_annotations = annotations
1289
return func
1290
503
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
504
return func
1291
505
return decorator
1292
506
1293
507
1294
508
class DBusPropertyException(dbus.exceptions.DBusException):
1295
509
"""A base class for D-Bus property-related exceptions
1296
510
"""
1297
pass
511
def __unicode__(self):
512
return unicode(str(self))
1298
513
1299
514
1300
515
class DBusPropertyAccessException(DBusPropertyException):
1309
524
pass
1310
525
1311
526
1312
class DBusObjectWithAnnotations(dbus.service.Object):
1313
"""A D-Bus object with annotations.
1314
1315
Classes inheriting from this can use the dbus_annotations
1316
decorator to add annotations to methods or signals.
1317
"""
1318
1319
@staticmethod
1320
def _is_dbus_thing(thing):
1321
"""Returns a function testing if an attribute is a D-Bus thing
1322
1323
If called like _is_dbus_thing("method") it returns a function
1324
suitable for use as predicate to inspect.getmembers().
1325
"""
1326
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1327
False)
1328
1329
def _get_all_dbus_things(self, thing):
1330
"""Returns a generator of (name, attribute) pairs
1331
"""
1332
return ((getattr(athing.__get__(self), "_dbus_name", name),
1333
athing.__get__(self))
1334
for cls in self.__class__.__mro__
1335
for name, athing in
1336
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1337
1338
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1339
out_signature="s",
1340
path_keyword='object_path',
1341
connection_keyword='connection')
1342
def Introspect(self, object_path, connection):
1343
"""Overloading of standard D-Bus method.
1344
1345
Inserts annotation tags on methods and signals.
1346
"""
1347
xmlstring = dbus.service.Object.Introspect(self, object_path,
1348
connection)
1349
try:
1350
document = xml.dom.minidom.parseString(xmlstring)
1351
1352
for if_tag in document.getElementsByTagName("interface"):
1353
# Add annotation tags
1354
for typ in ("method", "signal"):
1355
for tag in if_tag.getElementsByTagName(typ):
1356
annots = dict()
1357
for name, prop in (self.
1358
_get_all_dbus_things(typ)):
1359
if (name == tag.getAttribute("name")
1360
and prop._dbus_interface
1361
== if_tag.getAttribute("name")):
1362
annots.update(getattr(
1363
prop, "_dbus_annotations", {}))
1364
for name, value in annots.items():
1365
ann_tag = document.createElement(
1366
"annotation")
1367
ann_tag.setAttribute("name", name)
1368
ann_tag.setAttribute("value", value)
1369
tag.appendChild(ann_tag)
1370
# Add interface annotation tags
1371
for annotation, value in dict(
1372
itertools.chain.from_iterable(
1373
annotations().items()
1374
for name, annotations
1375
in self._get_all_dbus_things("interface")
1376
if name == if_tag.getAttribute("name")
1377
)).items():
1378
ann_tag = document.createElement("annotation")
1379
ann_tag.setAttribute("name", annotation)
1380
ann_tag.setAttribute("value", value)
1381
if_tag.appendChild(ann_tag)
1382
# Fix argument name for the Introspect method itself
1383
if (if_tag.getAttribute("name")
1384
== dbus.INTROSPECTABLE_IFACE):
1385
for cn in if_tag.getElementsByTagName("method"):
1386
if cn.getAttribute("name") == "Introspect":
1387
for arg in cn.getElementsByTagName("arg"):
1388
if (arg.getAttribute("direction")
1389
== "out"):
1390
arg.setAttribute("name",
1391
"xml_data")
1392
xmlstring = document.toxml("utf-8")
1393
document.unlink()
1394
except (AttributeError, xml.dom.DOMException,
1395
xml.parsers.expat.ExpatError) as error:
1396
logger.error("Failed to override Introspection method",
1397
exc_info=error)
1398
return xmlstring
1399
1400
1401
class DBusObjectWithProperties(DBusObjectWithAnnotations):
527
class DBusObjectWithProperties(dbus.service.Object):
1402
528
"""A D-Bus object with properties.
1403
529
1404
530
Classes inheriting from this can use the dbus_service_property
1405
531
decorator to expose methods as D-Bus properties. It exposes the
1406
532
standard Get(), Set(), and GetAll() methods on the D-Bus.
1407
533
"""
1408
534
535
@staticmethod
536
def _is_dbus_property(obj):
537
return getattr(obj, u"_dbus_is_property", False)
538
539
def _get_all_dbus_properties(self):
540
"""Returns a generator of (name, attribute) pairs
541
"""
542
return ((prop._dbus_name, prop)
543
for name, prop in
544
inspect.getmembers(self, self._is_dbus_property))
545
1409
546
def _get_dbus_property(self, interface_name, property_name):
1410
547
"""Returns a bound method if one exists which is a D-Bus
1411
548
property with the specified name and interface.
1412
549
"""
1413
for cls in self.__class__.__mro__:
1414
for name, value in inspect.getmembers(
1415
cls, self._is_dbus_thing("property")):
1416
if (value._dbus_name == property_name
1417
and value._dbus_interface == interface_name):
1418
return value.__get__(self)
1419
550
for name in (property_name,
551
property_name + u"_dbus_property"):
552
prop = getattr(self, name, None)
553
if (prop is None
554
or not self._is_dbus_property(prop)
555
or prop._dbus_name != property_name
556
or (interface_name and prop._dbus_interface
557
and interface_name != prop._dbus_interface)):
558
continue
559
return prop
1420
560
# No such property
1421
raise DBusPropertyNotFound("{}:{}.{}".format(
1422
self.dbus_object_path, interface_name, property_name))
1423
1424
@classmethod
1425
def _get_all_interface_names(cls):
1426
"""Get a sequence of all interfaces supported by an object"""
1427
return (name for name in set(getattr(getattr(x, attr),
1428
"_dbus_interface", None)
1429
for x in (inspect.getmro(cls))
1430
for attr in dir(x))
1431
if name is not None)
1432
1433
@dbus.service.method(dbus.PROPERTIES_IFACE,
1434
in_signature="ss",
1435
out_signature="v")
561
raise DBusPropertyNotFound(self.dbus_object_path + u":"
562
+ interface_name + u"."
563
+ property_name)
564
565
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
566
out_signature=u"v")
1436
567
def Get(self, interface_name, property_name):
1437
568
"""Standard D-Bus property Get() method, see D-Bus standard.
1438
569
"""
1439
570
prop = self._get_dbus_property(interface_name, property_name)
1440
if prop._dbus_access == "write":
571
if prop._dbus_access == u"write":
1441
572
raise DBusPropertyAccessException(property_name)
1442
573
value = prop()
1443
if not hasattr(value, "variant_level"):
574
if not hasattr(value, u"variant_level"):
1444
575
return value
1445
576
return type(value)(value, variant_level=value.variant_level+1)
1446
1447
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
577
578
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
1448
579
def Set(self, interface_name, property_name, value):
1449
580
"""Standard D-Bus property Set() method, see D-Bus standard.
1450
581
"""
1451
582
prop = self._get_dbus_property(interface_name, property_name)
1452
if prop._dbus_access == "read":
583
if prop._dbus_access == u"read":
1453
584
raise DBusPropertyAccessException(property_name)
1454
if prop._dbus_get_args_options["byte_arrays"]:
1455
# The byte_arrays option is not supported yet on
1456
# signatures other than "ay".
1457
if prop._dbus_signature != "ay":
1458
raise ValueError("Byte arrays not supported for non-"
1459
"'ay' signature {!r}"
1460
.format(prop._dbus_signature))
1461
value = dbus.ByteArray(bytes(value))
585
if prop._dbus_get_args_options[u"byte_arrays"]:
586
value = dbus.ByteArray(''.join(unichr(byte)
587
for byte in value))
1462
588
prop(value)
1463
1464
@dbus.service.method(dbus.PROPERTIES_IFACE,
1465
in_signature="s",
1466
out_signature="a{sv}")
589
590
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
591
out_signature=u"a{sv}")
1467
592
def GetAll(self, interface_name):
1468
593
"""Standard D-Bus property GetAll() method, see D-Bus
1469
594
standard.
1470
595
1471
596
Note: Will not include properties with access="write".
1472
597
"""
1473
properties = {}
1474
for name, prop in self._get_all_dbus_things("property"):
598
all = {}
599
for name, prop in self._get_all_dbus_properties():
1475
600
if (interface_name
1476
601
and interface_name != prop._dbus_interface):
1477
602
# Interface non-empty but did not match
1478
603
continue
1479
604
# Ignore write-only properties
1480
if prop._dbus_access == "write":
605
if prop._dbus_access == u"write":
1481
606
continue
1482
607
value = prop()
1483
if not hasattr(value, "variant_level"):
1484
properties[name] = value
608
if not hasattr(value, u"variant_level"):
609
all[name] = value
1485
610
continue
1486
properties[name] = type(value)(
1487
value, variant_level=value.variant_level + 1)
1488
return dbus.Dictionary(properties, signature="sv")
1489
1490
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1491
def PropertiesChanged(self, interface_name, changed_properties,
1492
invalidated_properties):
1493
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1494
standard.
1495
"""
1496
pass
1497
1498
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1499
out_signature="s",
1500
path_keyword='object_path',
1501
connection_keyword='connection')
1502
def Introspect(self, object_path, connection):
1503
"""Overloading of standard D-Bus method.
1504
1505
Inserts property tags and interface annotation tags.
1506
"""
1507
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1508
object_path,
1509
connection)
1510
try:
1511
document = xml.dom.minidom.parseString(xmlstring)
1512
1513
def make_tag(document, name, prop):
1514
e = document.createElement("property")
1515
e.setAttribute("name", name)
1516
e.setAttribute("type", prop._dbus_signature)
1517
e.setAttribute("access", prop._dbus_access)
1518
return e
1519
1520
for if_tag in document.getElementsByTagName("interface"):
1521
# Add property tags
1522
for tag in (make_tag(document, name, prop)
1523
for name, prop
1524
in self._get_all_dbus_things("property")
1525
if prop._dbus_interface
1526
== if_tag.getAttribute("name")):
1527
if_tag.appendChild(tag)
1528
# Add annotation tags for properties
1529
for tag in if_tag.getElementsByTagName("property"):
1530
annots = dict()
1531
for name, prop in self._get_all_dbus_things(
1532
"property"):
1533
if (name == tag.getAttribute("name")
1534
and prop._dbus_interface
1535
== if_tag.getAttribute("name")):
1536
annots.update(getattr(
1537
prop, "_dbus_annotations", {}))
1538
for name, value in annots.items():
1539
ann_tag = document.createElement(
1540
"annotation")
1541
ann_tag.setAttribute("name", name)
1542
ann_tag.setAttribute("value", value)
1543
tag.appendChild(ann_tag)
1544
# Add the names to the return values for the
1545
# "org.freedesktop.DBus.Properties" methods
1546
if (if_tag.getAttribute("name")
1547
== "org.freedesktop.DBus.Properties"):
1548
for cn in if_tag.getElementsByTagName("method"):
1549
if cn.getAttribute("name") == "Get":
1550
for arg in cn.getElementsByTagName("arg"):
1551
if (arg.getAttribute("direction")
1552
== "out"):
1553
arg.setAttribute("name", "value")
1554
elif cn.getAttribute("name") == "GetAll":
1555
for arg in cn.getElementsByTagName("arg"):
1556
if (arg.getAttribute("direction")
1557
== "out"):
1558
arg.setAttribute("name", "props")
1559
xmlstring = document.toxml("utf-8")
1560
document.unlink()
1561
except (AttributeError, xml.dom.DOMException,
1562
xml.parsers.expat.ExpatError) as error:
1563
logger.error("Failed to override Introspection method",
1564
exc_info=error)
1565
return xmlstring
1566
1567
1568
try:
1569
dbus.OBJECT_MANAGER_IFACE
1570
except AttributeError:
1571
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1572
1573
1574
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1575
"""A D-Bus object with an ObjectManager.
1576
1577
Classes inheriting from this exposes the standard
1578
GetManagedObjects call and the InterfacesAdded and
1579
InterfacesRemoved signals on the standard
1580
"org.freedesktop.DBus.ObjectManager" interface.
1581
1582
Note: No signals are sent automatically; they must be sent
1583
manually.
1584
"""
1585
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1586
out_signature="a{oa{sa{sv}}}")
1587
def GetManagedObjects(self):
1588
"""This function must be overridden"""
1589
raise NotImplementedError()
1590
1591
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1592
signature="oa{sa{sv}}")
1593
def InterfacesAdded(self, object_path, interfaces_and_properties):
1594
pass
1595
1596
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1597
def InterfacesRemoved(self, object_path, interfaces):
1598
pass
1599
1600
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1601
out_signature="s",
1602
path_keyword='object_path',
1603
connection_keyword='connection')
1604
def Introspect(self, object_path, connection):
1605
"""Overloading of standard D-Bus method.
1606
1607
Override return argument name of GetManagedObjects to be
1608
"objpath_interfaces_and_properties"
1609
"""
1610
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1611
object_path,
1612
connection)
1613
try:
1614
document = xml.dom.minidom.parseString(xmlstring)
1615
1616
for if_tag in document.getElementsByTagName("interface"):
1617
# Fix argument name for the GetManagedObjects method
1618
if (if_tag.getAttribute("name")
1619
== dbus.OBJECT_MANAGER_IFACE):
1620
for cn in if_tag.getElementsByTagName("method"):
1621
if (cn.getAttribute("name")
1622
== "GetManagedObjects"):
1623
for arg in cn.getElementsByTagName("arg"):
1624
if (arg.getAttribute("direction")
1625
== "out"):
1626
arg.setAttribute(
1627
"name",
1628
"objpath_interfaces"
1629
"_and_properties")
1630
xmlstring = document.toxml("utf-8")
1631
document.unlink()
1632
except (AttributeError, xml.dom.DOMException,
1633
xml.parsers.expat.ExpatError) as error:
1634
logger.error("Failed to override Introspection method",
1635
exc_info=error)
1636
return xmlstring
1637
1638
1639
def datetime_to_dbus(dt, variant_level=0):
1640
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1641
if dt is None:
1642
return dbus.String("", variant_level=variant_level)
1643
return dbus.String(dt.isoformat(), variant_level=variant_level)
1644
1645
1646
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1647
"""A class decorator; applied to a subclass of
1648
dbus.service.Object, it will add alternate D-Bus attributes with
1649
interface names according to the "alt_interface_names" mapping.
1650
Usage:
1651
1652
@alternate_dbus_interfaces({"org.example.Interface":
1653
"net.example.AlternateInterface"})
1654
class SampleDBusObject(dbus.service.Object):
1655
@dbus.service.method("org.example.Interface")
1656
def SampleDBusMethod():
1657
pass
1658
1659
The above "SampleDBusMethod" on "SampleDBusObject" will be
1660
reachable via two interfaces: "org.example.Interface" and
1661
"net.example.AlternateInterface", the latter of which will have
1662
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1663
"true", unless "deprecate" is passed with a False value.
1664
1665
This works for methods and signals, and also for D-Bus properties
1666
(from DBusObjectWithProperties) and interfaces (from the
1667
dbus_interface_annotations decorator).
1668
"""
1669
1670
def wrapper(cls):
1671
for orig_interface_name, alt_interface_name in (
1672
alt_interface_names.items()):
1673
attr = {}
1674
interface_names = set()
1675
# Go though all attributes of the class
1676
for attrname, attribute in inspect.getmembers(cls):
1677
# Ignore non-D-Bus attributes, and D-Bus attributes
1678
# with the wrong interface name
1679
if (not hasattr(attribute, "_dbus_interface")
1680
or not attribute._dbus_interface.startswith(
1681
orig_interface_name)):
1682
continue
1683
# Create an alternate D-Bus interface name based on
1684
# the current name
1685
alt_interface = attribute._dbus_interface.replace(
1686
orig_interface_name, alt_interface_name)
1687
interface_names.add(alt_interface)
1688
# Is this a D-Bus signal?
1689
if getattr(attribute, "_dbus_is_signal", False):
1690
# Extract the original non-method undecorated
1691
# function by black magic
1692
if sys.version_info.major == 2:
1693
nonmethod_func = (dict(
1694
zip(attribute.func_code.co_freevars,
1695
attribute.__closure__))
1696
["func"].cell_contents)
1697
else:
1698
nonmethod_func = (dict(
1699
zip(attribute.__code__.co_freevars,
1700
attribute.__closure__))
1701
["func"].cell_contents)
1702
# Create a new, but exactly alike, function
1703
# object, and decorate it to be a new D-Bus signal
1704
# with the alternate D-Bus interface name
1705
new_function = copy_function(nonmethod_func)
1706
new_function = (dbus.service.signal(
1707
alt_interface,
1708
attribute._dbus_signature)(new_function))
1709
# Copy annotations, if any
1710
try:
1711
new_function._dbus_annotations = dict(
1712
attribute._dbus_annotations)
1713
except AttributeError:
1714
pass
1715
1716
# Define a creator of a function to call both the
1717
# original and alternate functions, so both the
1718
# original and alternate signals gets sent when
1719
# the function is called
1720
def fixscope(func1, func2):
1721
"""This function is a scope container to pass
1722
func1 and func2 to the "call_both" function
1723
outside of its arguments"""
1724
1725
@functools.wraps(func2)
1726
def call_both(*args, **kwargs):
1727
"""This function will emit two D-Bus
1728
signals by calling func1 and func2"""
1729
func1(*args, **kwargs)
1730
func2(*args, **kwargs)
1731
# Make wrapper function look like a D-Bus
1732
# signal
1733
for name, attr in inspect.getmembers(func2):
1734
if name.startswith("_dbus_"):
1735
setattr(call_both, name, attr)
1736
1737
return call_both
1738
# Create the "call_both" function and add it to
1739
# the class
1740
attr[attrname] = fixscope(attribute, new_function)
1741
# Is this a D-Bus method?
1742
elif getattr(attribute, "_dbus_is_method", False):
1743
# Create a new, but exactly alike, function
1744
# object. Decorate it to be a new D-Bus method
1745
# with the alternate D-Bus interface name. Add it
1746
# to the class.
1747
attr[attrname] = (
1748
dbus.service.method(
1749
alt_interface,
1750
attribute._dbus_in_signature,
1751
attribute._dbus_out_signature)
1752
(copy_function(attribute)))
1753
# Copy annotations, if any
1754
try:
1755
attr[attrname]._dbus_annotations = dict(
1756
attribute._dbus_annotations)
1757
except AttributeError:
1758
pass
1759
# Is this a D-Bus property?
1760
elif getattr(attribute, "_dbus_is_property", False):
1761
# Create a new, but exactly alike, function
1762
# object, and decorate it to be a new D-Bus
1763
# property with the alternate D-Bus interface
1764
# name. Add it to the class.
1765
attr[attrname] = (dbus_service_property(
1766
alt_interface, attribute._dbus_signature,
1767
attribute._dbus_access,
1768
attribute._dbus_get_args_options
1769
["byte_arrays"])
1770
(copy_function(attribute)))
1771
# Copy annotations, if any
1772
try:
1773
attr[attrname]._dbus_annotations = dict(
1774
attribute._dbus_annotations)
1775
except AttributeError:
1776
pass
1777
# Is this a D-Bus interface?
1778
elif getattr(attribute, "_dbus_is_interface", False):
1779
# Create a new, but exactly alike, function
1780
# object. Decorate it to be a new D-Bus interface
1781
# with the alternate D-Bus interface name. Add it
1782
# to the class.
1783
attr[attrname] = (
1784
dbus_interface_annotations(alt_interface)
1785
(copy_function(attribute)))
1786
if deprecate:
1787
# Deprecate all alternate interfaces
1788
iname = "_AlternateDBusNames_interface_annotation{}"
1789
for interface_name in interface_names:
1790
1791
@dbus_interface_annotations(interface_name)
1792
def func(self):
1793
return {"org.freedesktop.DBus.Deprecated":
1794
"true"}
1795
# Find an unused name
1796
for aname in (iname.format(i)
1797
for i in itertools.count()):
1798
if aname not in attr:
1799
attr[aname] = func
1800
break
1801
if interface_names:
1802
# Replace the class with a new subclass of it with
1803
# methods, signals, etc. as created above.
1804
if sys.version_info.major == 2:
1805
cls = type(b"{}Alternate".format(cls.__name__),
1806
(cls, ), attr)
1807
else:
1808
cls = type("{}Alternate".format(cls.__name__),
1809
(cls, ), attr)
1810
return cls
1811
1812
return wrapper
1813
1814
1815
@alternate_dbus_interfaces({"se.recompile.Mandos":
1816
"se.bsnet.fukt.Mandos"})
611
all[name] = type(value)(value, variant_level=
612
value.variant_level+1)
613
return dbus.Dictionary(all, signature=u"sv")
614
615
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
616
out_signature=u"s",
617
path_keyword='object_path',
618
connection_keyword='connection')
619
def Introspect(self, object_path, connection):
620
"""Standard D-Bus method, overloaded to insert property tags.
621
"""
622
xmlstring = dbus.service.Object.Introspect(self, object_path,
623
connection)
624
document = xml.dom.minidom.parseString(xmlstring)
625
del xmlstring
626
def make_tag(document, name, prop):
627
e = document.createElement(u"property")
628
e.setAttribute(u"name", name)
629
e.setAttribute(u"type", prop._dbus_signature)
630
e.setAttribute(u"access", prop._dbus_access)
631
return e
632
for if_tag in document.getElementsByTagName(u"interface"):
633
for tag in (make_tag(document, name, prop)
634
for name, prop
635
in self._get_all_dbus_properties()
636
if prop._dbus_interface
637
== if_tag.getAttribute(u"name")):
638
if_tag.appendChild(tag)
639
xmlstring = document.toxml(u"utf-8")
640
document.unlink()
641
return xmlstring
642
643
1817
644
class ClientDBus(Client, DBusObjectWithProperties):
1818
645
"""A Client class using D-Bus
1819
646
1820
647
Attributes:
1821
648
dbus_object_path: dbus.ObjectPath
1822
649
bus: dbus.SystemBus()
1823
650
"""
1824
1825
runtime_expansions = (Client.runtime_expansions
1826
+ ("dbus_object_path", ))
1827
1828
_interface = "se.recompile.Mandos.Client"
1829
1830
651
# dbus.service.Object doesn't use super(), so we can't either.
1831
1832
def __init__(self, bus=None, *args, **kwargs):
652
653
def __init__(self, bus = None, *args, **kwargs):
1833
654
self.bus = bus
1834
655
Client.__init__(self, *args, **kwargs)
1835
656
# Only now, when this client is initialized, can it show up on
1836
657
# the D-Bus
1837
client_object_name = str(self.name).translate(
1838
{ord("."): ord("_"),
1839
ord("-"): ord("_")})
1840
self.dbus_object_path = dbus.ObjectPath(
1841
"/clients/" + client_object_name)
658
self.dbus_object_path = (dbus.ObjectPath
659
(u"/clients/"
660
+ self.name.replace(u".", u"_")))
1842
661
DBusObjectWithProperties.__init__(self, self.bus,
1843
662
self.dbus_object_path)
1844
1845
def notifychangeproperty(transform_func, dbus_name,
1846
type_func=lambda x: x,
1847
variant_level=1,
1848
invalidate_only=False,
1849
_interface=_interface):
1850
""" Modify a variable so that it's a property which announces
1851
its changes to DBus.
1852
1853
transform_fun: Function that takes a value and a variant_level
1854
and transforms it to a D-Bus type.
1855
dbus_name: D-Bus name of the variable
1856
type_func: Function that transform the value before sending it
1857
to the D-Bus. Default: no transform
1858
variant_level: D-Bus variant level. Default: 1
1859
"""
1860
attrname = "_{}".format(dbus_name)
1861
1862
def setter(self, value):
1863
if hasattr(self, "dbus_object_path"):
1864
if (not hasattr(self, attrname) or
1865
type_func(getattr(self, attrname, None))
1866
!= type_func(value)):
1867
if invalidate_only:
1868
self.PropertiesChanged(
1869
_interface, dbus.Dictionary(),
1870
dbus.Array((dbus_name, )))
1871
else:
1872
dbus_value = transform_func(
1873
type_func(value),
1874
variant_level=variant_level)
1875
self.PropertyChanged(dbus.String(dbus_name),
1876
dbus_value)
1877
self.PropertiesChanged(
1878
_interface,
1879
dbus.Dictionary({dbus.String(dbus_name):
1880
dbus_value}),
1881
dbus.Array())
1882
setattr(self, attrname, value)
1883
1884
return property(lambda self: getattr(self, attrname), setter)
1885
1886
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1887
approvals_pending = notifychangeproperty(dbus.Boolean,
1888
"ApprovalPending",
1889
type_func=bool)
1890
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1891
last_enabled = notifychangeproperty(datetime_to_dbus,
1892
"LastEnabled")
1893
checker = notifychangeproperty(
1894
dbus.Boolean, "CheckerRunning",
1895
type_func=lambda checker: checker is not None)
1896
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1897
"LastCheckedOK")
1898
last_checker_status = notifychangeproperty(dbus.Int16,
1899
"LastCheckerStatus")
1900
last_approval_request = notifychangeproperty(
1901
datetime_to_dbus, "LastApprovalRequest")
1902
approved_by_default = notifychangeproperty(dbus.Boolean,
1903
"ApprovedByDefault")
1904
approval_delay = notifychangeproperty(
1905
dbus.UInt64, "ApprovalDelay",
1906
type_func=lambda td: td.total_seconds() * 1000)
1907
approval_duration = notifychangeproperty(
1908
dbus.UInt64, "ApprovalDuration",
1909
type_func=lambda td: td.total_seconds() * 1000)
1910
host = notifychangeproperty(dbus.String, "Host")
1911
timeout = notifychangeproperty(
1912
dbus.UInt64, "Timeout",
1913
type_func=lambda td: td.total_seconds() * 1000)
1914
extended_timeout = notifychangeproperty(
1915
dbus.UInt64, "ExtendedTimeout",
1916
type_func=lambda td: td.total_seconds() * 1000)
1917
interval = notifychangeproperty(
1918
dbus.UInt64, "Interval",
1919
type_func=lambda td: td.total_seconds() * 1000)
1920
checker_command = notifychangeproperty(dbus.String, "Checker")
1921
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1922
invalidate_only=True)
1923
1924
del notifychangeproperty
1925
663
664
@staticmethod
665
def _datetime_to_dbus(dt, variant_level=0):
666
"""Convert a UTC datetime.datetime() to a D-Bus type."""
667
return dbus.String(dt.isoformat(),
668
variant_level=variant_level)
669
670
def enable(self):
671
oldstate = getattr(self, u"enabled", False)
672
r = Client.enable(self)
673
if oldstate != self.enabled:
674
# Emit D-Bus signals
675
self.PropertyChanged(dbus.String(u"enabled"),
676
dbus.Boolean(True, variant_level=1))
677
self.PropertyChanged(
678
dbus.String(u"last_enabled"),
679
self._datetime_to_dbus(self.last_enabled,
680
variant_level=1))
681
return r
682
683
def disable(self, signal = True):
684
oldstate = getattr(self, u"enabled", False)
685
r = Client.disable(self)
686
if signal and oldstate != self.enabled:
687
# Emit D-Bus signal
688
self.PropertyChanged(dbus.String(u"enabled"),
689
dbus.Boolean(False, variant_level=1))
690
return r
691
1926
692
def __del__(self, *args, **kwargs):
1927
693
try:
1928
694
self.remove_from_connection()
1929
695
except LookupError:
1930
696
pass
1931
if hasattr(DBusObjectWithProperties, "__del__"):
697
if hasattr(DBusObjectWithProperties, u"__del__"):
1932
698
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1933
699
Client.__del__(self, *args, **kwargs)
1934
1935
def checker_callback(self, source, condition,
1936
connection, command, *args, **kwargs):
1937
ret = Client.checker_callback(self, source, condition,
1938
connection, command, *args,
1939
**kwargs)
1940
exitstatus = self.last_checker_status
1941
if exitstatus >= 0:
700
701
def checker_callback(self, pid, condition, command,
702
*args, **kwargs):
703
self.checker_callback_tag = None
704
self.checker = None
705
# Emit D-Bus signal
706
self.PropertyChanged(dbus.String(u"checker_running"),
707
dbus.Boolean(False, variant_level=1))
708
if os.WIFEXITED(condition):
709
exitstatus = os.WEXITSTATUS(condition)
1942
710
# Emit D-Bus signal
1943
711
self.CheckerCompleted(dbus.Int16(exitstatus),
1944
# This is specific to GNU libC
1945
dbus.Int64(exitstatus << 8),
712
dbus.Int64(condition),
1946
713
dbus.String(command))
1947
714
else:
1948
715
# Emit D-Bus signal
1949
716
self.CheckerCompleted(dbus.Int16(-1),
1950
dbus.Int64(
1951
# This is specific to GNU libC
1952
(exitstatus << 8)
1953
| self.last_checker_signal),
717
dbus.Int64(condition),
1954
718
dbus.String(command))
1955
return ret
1956
719
720
return Client.checker_callback(self, pid, condition, command,
721
*args, **kwargs)
722
723
def checked_ok(self, *args, **kwargs):
724
r = Client.checked_ok(self, *args, **kwargs)
725
# Emit D-Bus signal
726
self.PropertyChanged(
727
dbus.String(u"last_checked_ok"),
728
(self._datetime_to_dbus(self.last_checked_ok,
729
variant_level=1)))
730
return r
731
1957
732
def start_checker(self, *args, **kwargs):
1958
old_checker_pid = getattr(self.checker, "pid", None)
733
old_checker = self.checker
734
if self.checker is not None:
735
old_checker_pid = self.checker.pid
736
else:
737
old_checker_pid = None
1959
738
r = Client.start_checker(self, *args, **kwargs)
1960
739
# Only if new checker process was started
1961
740
if (self.checker is not None
1962
741
and old_checker_pid != self.checker.pid):
1963
742
# Emit D-Bus signal
1964
743
self.CheckerStarted(self.current_checker_command)
1965
return r
1966
1967
def _reset_approved(self):
1968
self.approved = None
1969
return False
1970
1971
def approve(self, value=True):
1972
self.approved = value
1973
GLib.timeout_add(int(self.approval_duration.total_seconds()
1974
* 1000), self._reset_approved)
1975
self.send_changedstate()
1976
1977
# D-Bus methods, signals & properties
1978
1979
# Interfaces
1980
1981
# Signals
1982
744
self.PropertyChanged(
745
dbus.String(u"checker_running"),
746
dbus.Boolean(True, variant_level=1))
747
return r
748
749
def stop_checker(self, *args, **kwargs):
750
old_checker = getattr(self, u"checker", None)
751
r = Client.stop_checker(self, *args, **kwargs)
752
if (old_checker is not None
753
and getattr(self, u"checker", None) is None):
754
self.PropertyChanged(dbus.String(u"checker_running"),
755
dbus.Boolean(False, variant_level=1))
756
return r
757
758
## D-Bus methods & signals
759
_interface = u"se.bsnet.fukt.Mandos.Client"
760
761
# CheckedOK - method
762
@dbus.service.method(_interface)
763
def CheckedOK(self):
764
return self.checked_ok()
765
1983
766
# CheckerCompleted - signal
1984
@dbus.service.signal(_interface, signature="nxs")
767
@dbus.service.signal(_interface, signature=u"nxs")
1985
768
def CheckerCompleted(self, exitcode, waitstatus, command):
1986
769
"D-Bus signal"
1987
770
pass
1988
771
1989
772
# CheckerStarted - signal
1990
@dbus.service.signal(_interface, signature="s")
773
@dbus.service.signal(_interface, signature=u"s")
1991
774
def CheckerStarted(self, command):
1992
775
"D-Bus signal"
1993
776
pass
1994
777
1995
778
# PropertyChanged - signal
1996
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1997
@dbus.service.signal(_interface, signature="sv")
779
@dbus.service.signal(_interface, signature=u"sv")
1998
780
def PropertyChanged(self, property, value):
1999
781
"D-Bus signal"
2000
782
pass
2001
2002
# GotSecret - signal
783
784
# ReceivedSecret - signal
2003
785
@dbus.service.signal(_interface)
2004
def GotSecret(self):
2005
"""D-Bus signal
2006
Is sent after a successful transfer of secret from the Mandos
2007
server to mandos-client
2008
"""
786
def ReceivedSecret(self):
787
"D-Bus signal"
2009
788
pass
2010
789
2011
790
# Rejected - signal
2012
@dbus.service.signal(_interface, signature="s")
2013
def Rejected(self, reason):
791
@dbus.service.signal(_interface)
792
def Rejected(self):
2014
793
"D-Bus signal"
2015
794
pass
2016
2017
# NeedApproval - signal
2018
@dbus.service.signal(_interface, signature="tb")
2019
def NeedApproval(self, timeout, default):
2020
"D-Bus signal"
2021
return self.need_approval()
2022
2023
# Methods
2024
2025
# Approve - method
2026
@dbus.service.method(_interface, in_signature="b")
2027
def Approve(self, value):
2028
self.approve(value)
2029
2030
# CheckedOK - method
2031
@dbus.service.method(_interface)
2032
def CheckedOK(self):
2033
self.checked_ok()
2034
795
2035
796
# Enable - method
2036
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2037
797
@dbus.service.method(_interface)
2038
798
def Enable(self):
2039
799
"D-Bus method"
2040
800
self.enable()
2041
801
2042
802
# StartChecker - method
2043
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2044
803
@dbus.service.method(_interface)
2045
804
def StartChecker(self):
2046
805
"D-Bus method"
2047
806
self.start_checker()
2048
807
2049
808
# Disable - method
2050
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2051
809
@dbus.service.method(_interface)
2052
810
def Disable(self):
2053
811
"D-Bus method"
2054
812
self.disable()
2055
813
2056
814
# StopChecker - method
2057
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2058
815
@dbus.service.method(_interface)
2059
816
def StopChecker(self):
2060
817
self.stop_checker()
2061
2062
# Properties
2063
2064
# ApprovalPending - property
2065
@dbus_service_property(_interface, signature="b", access="read")
2066
def ApprovalPending_dbus_property(self):
2067
return dbus.Boolean(bool(self.approvals_pending))
2068
2069
# ApprovedByDefault - property
2070
@dbus_service_property(_interface,
2071
signature="b",
2072
access="readwrite")
2073
def ApprovedByDefault_dbus_property(self, value=None):
2074
if value is None: # get
2075
return dbus.Boolean(self.approved_by_default)
2076
self.approved_by_default = bool(value)
2077
2078
# ApprovalDelay - property
2079
@dbus_service_property(_interface,
2080
signature="t",
2081
access="readwrite")
2082
def ApprovalDelay_dbus_property(self, value=None):
2083
if value is None: # get
2084
return dbus.UInt64(self.approval_delay.total_seconds()
2085
* 1000)
2086
self.approval_delay = datetime.timedelta(0, 0, 0, value)
2087
2088
# ApprovalDuration - property
2089
@dbus_service_property(_interface,
2090
signature="t",
2091
access="readwrite")
2092
def ApprovalDuration_dbus_property(self, value=None):
2093
if value is None: # get
2094
return dbus.UInt64(self.approval_duration.total_seconds()
2095
* 1000)
2096
self.approval_duration = datetime.timedelta(0, 0, 0, value)
2097
2098
# Name - property
2099
@dbus_annotations(
2100
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2101
@dbus_service_property(_interface, signature="s", access="read")
2102
def Name_dbus_property(self):
818
819
# name - property
820
@dbus_service_property(_interface, signature=u"s", access=u"read")
821
def name_dbus_property(self):
2103
822
return dbus.String(self.name)
2104
2105
# KeyID - property
2106
@dbus_annotations(
2107
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2108
@dbus_service_property(_interface, signature="s", access="read")
2109
def KeyID_dbus_property(self):
2110
return dbus.String(self.key_id)
2111
2112
# Fingerprint - property
2113
@dbus_annotations(
2114
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2115
@dbus_service_property(_interface, signature="s", access="read")
2116
def Fingerprint_dbus_property(self):
823
824
# fingerprint - property
825
@dbus_service_property(_interface, signature=u"s", access=u"read")
826
def fingerprint_dbus_property(self):
2117
827
return dbus.String(self.fingerprint)
2118
2119
# Host - property
2120
@dbus_service_property(_interface,
2121
signature="s",
2122
access="readwrite")
2123
def Host_dbus_property(self, value=None):
828
829
# host - property
830
@dbus_service_property(_interface, signature=u"s",
831
access=u"readwrite")
832
def host_dbus_property(self, value=None):
2124
833
if value is None: # get
2125
834
return dbus.String(self.host)
2126
self.host = str(value)
2127
2128
# Created - property
2129
@dbus_annotations(
2130
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2131
@dbus_service_property(_interface, signature="s", access="read")
2132
def Created_dbus_property(self):
2133
return datetime_to_dbus(self.created)
2134
2135
# LastEnabled - property
2136
@dbus_service_property(_interface, signature="s", access="read")
2137
def LastEnabled_dbus_property(self):
2138
return datetime_to_dbus(self.last_enabled)
2139
2140
# Enabled - property
2141
@dbus_service_property(_interface,
2142
signature="b",
2143
access="readwrite")
2144
def Enabled_dbus_property(self, value=None):
835
self.host = value
836
# Emit D-Bus signal
837
self.PropertyChanged(dbus.String(u"host"),
838
dbus.String(value, variant_level=1))
839
840
# created - property
841
@dbus_service_property(_interface, signature=u"s", access=u"read")
842
def created_dbus_property(self):
843
return dbus.String(self._datetime_to_dbus(self.created))
844
845
# last_enabled - property
846
@dbus_service_property(_interface, signature=u"s", access=u"read")
847
def last_enabled_dbus_property(self):
848
if self.last_enabled is None:
849
return dbus.String(u"")
850
return dbus.String(self._datetime_to_dbus(self.last_enabled))
851
852
# enabled - property
853
@dbus_service_property(_interface, signature=u"b",
854
access=u"readwrite")
855
def enabled_dbus_property(self, value=None):
2145
856
if value is None: # get
2146
857
return dbus.Boolean(self.enabled)
2147
858
if value:
2148
859
self.enable()
2149
860
else:
2150
861
self.disable()
2151
2152
# LastCheckedOK - property
2153
@dbus_service_property(_interface,
2154
signature="s",
2155
access="readwrite")
2156
def LastCheckedOK_dbus_property(self, value=None):
862
863
# last_checked_ok - property
864
@dbus_service_property(_interface, signature=u"s",
865
access=u"readwrite")
866
def last_checked_ok_dbus_property(self, value=None):
2157
867
if value is not None:
2158
868
self.checked_ok()
2159
869
return
2160
return datetime_to_dbus(self.last_checked_ok)
2161
2162
# LastCheckerStatus - property
2163
@dbus_service_property(_interface, signature="n", access="read")
2164
def LastCheckerStatus_dbus_property(self):
2165
return dbus.Int16(self.last_checker_status)
2166
2167
# Expires - property
2168
@dbus_service_property(_interface, signature="s", access="read")
2169
def Expires_dbus_property(self):
2170
return datetime_to_dbus(self.expires)
2171
2172
# LastApprovalRequest - property
2173
@dbus_service_property(_interface, signature="s", access="read")
2174
def LastApprovalRequest_dbus_property(self):
2175
return datetime_to_dbus(self.last_approval_request)
2176
2177
# Timeout - property
2178
@dbus_service_property(_interface,
2179
signature="t",
2180
access="readwrite")
2181
def Timeout_dbus_property(self, value=None):
870
if self.last_checked_ok is None:
871
return dbus.String(u"")
872
return dbus.String(self._datetime_to_dbus(self
873
.last_checked_ok))
874
875
# timeout - property
876
@dbus_service_property(_interface, signature=u"t",
877
access=u"readwrite")
878
def timeout_dbus_property(self, value=None):
2182
879
if value is None: # get
2183
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2184
old_timeout = self.timeout
880
return dbus.UInt64(self.timeout_milliseconds())
2185
881
self.timeout = datetime.timedelta(0, 0, 0, value)
2186
# Reschedule disabling
2187
if self.enabled:
2188
now = datetime.datetime.utcnow()
2189
self.expires += self.timeout - old_timeout
2190
if self.expires <= now:
2191
# The timeout has passed
2192
self.disable()
2193
else:
2194
if (getattr(self, "disable_initiator_tag", None)
2195
is None):
2196
return
2197
GLib.source_remove(self.disable_initiator_tag)
2198
self.disable_initiator_tag = GLib.timeout_add(
2199
int((self.expires - now).total_seconds() * 1000),
2200
self.disable)
2201
2202
# ExtendedTimeout - property
2203
@dbus_service_property(_interface,
2204
signature="t",
2205
access="readwrite")
2206
def ExtendedTimeout_dbus_property(self, value=None):
2207
if value is None: # get
2208
return dbus.UInt64(self.extended_timeout.total_seconds()
2209
* 1000)
2210
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2211
2212
# Interval - property
2213
@dbus_service_property(_interface,
2214
signature="t",
2215
access="readwrite")
2216
def Interval_dbus_property(self, value=None):
2217
if value is None: # get
2218
return dbus.UInt64(self.interval.total_seconds() * 1000)
882
# Emit D-Bus signal
883
self.PropertyChanged(dbus.String(u"timeout"),
884
dbus.UInt64(value, variant_level=1))
885
if getattr(self, u"disable_initiator_tag", None) is None:
886
return
887
# Reschedule timeout
888
gobject.source_remove(self.disable_initiator_tag)
889
self.disable_initiator_tag = None
890
time_to_die = (self.
891
_timedelta_to_milliseconds((self
892
.last_checked_ok
893
+ self.timeout)
894
- datetime.datetime
895
.utcnow()))
896
if time_to_die <= 0:
897
# The timeout has passed
898
self.disable()
899
else:
900
self.disable_initiator_tag = (gobject.timeout_add
901
(time_to_die, self.disable))
902
903
# interval - property
904
@dbus_service_property(_interface, signature=u"t",
905
access=u"readwrite")
906
def interval_dbus_property(self, value=None):
907
if value is None: # get
908
return dbus.UInt64(self.interval_milliseconds())
2219
909
self.interval = datetime.timedelta(0, 0, 0, value)
2220
if getattr(self, "checker_initiator_tag", None) is None:
910
# Emit D-Bus signal
911
self.PropertyChanged(dbus.String(u"interval"),
912
dbus.UInt64(value, variant_level=1))
913
if getattr(self, u"checker_initiator_tag", None) is None:
2221
914
return
2222
if self.enabled:
2223
# Reschedule checker run
2224
GLib.source_remove(self.checker_initiator_tag)
2225
self.checker_initiator_tag = GLib.timeout_add(
2226
value, self.start_checker)
2227
self.start_checker() # Start one now, too
915
# Reschedule checker run
916
gobject.source_remove(self.checker_initiator_tag)
917
self.checker_initiator_tag = (gobject.timeout_add
918
(value, self.start_checker))
919
self.start_checker() # Start one now, too
2228
920
2229
# Checker - property
2230
@dbus_service_property(_interface,
2231
signature="s",
2232
access="readwrite")
2233
def Checker_dbus_property(self, value=None):
921
# checker - property
922
@dbus_service_property(_interface, signature=u"s",
923
access=u"readwrite")
924
def checker_dbus_property(self, value=None):
2234
925
if value is None: # get
2235
926
return dbus.String(self.checker_command)
2236
self.checker_command = str(value)
2237
2238
# CheckerRunning - property
2239
@dbus_service_property(_interface,
2240
signature="b",
2241
access="readwrite")
2242
def CheckerRunning_dbus_property(self, value=None):
927
self.checker_command = value
928
# Emit D-Bus signal
929
self.PropertyChanged(dbus.String(u"checker"),
930
dbus.String(self.checker_command,
931
variant_level=1))
932
933
# checker_running - property
934
@dbus_service_property(_interface, signature=u"b",
935
access=u"readwrite")
936
def checker_running_dbus_property(self, value=None):
2243
937
if value is None: # get
2244
938
return dbus.Boolean(self.checker is not None)
2245
939
if value:
2246
940
self.start_checker()
2247
941
else:
2248
942
self.stop_checker()
2249
2250
# ObjectPath - property
2251
@dbus_annotations(
2252
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2253
"org.freedesktop.DBus.Deprecated": "true"})
2254
@dbus_service_property(_interface, signature="o", access="read")
2255
def ObjectPath_dbus_property(self):
2256
return self.dbus_object_path # is already a dbus.ObjectPath
2257
2258
# Secret = property
2259
@dbus_annotations(
2260
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2261
"invalidates"})
2262
@dbus_service_property(_interface,
2263
signature="ay",
2264
access="write",
2265
byte_arrays=True)
2266
def Secret_dbus_property(self, value):
2267
self.secret = bytes(value)
2268
943
944
# object_path - property
945
@dbus_service_property(_interface, signature=u"o", access=u"read")
946
def object_path_dbus_property(self):
947
return self.dbus_object_path # is already a dbus.ObjectPath
948
949
# secret = property
950
@dbus_service_property(_interface, signature=u"ay",
951
access=u"write", byte_arrays=True)
952
def secret_dbus_property(self, value):
953
self.secret = str(value)
954
2269
955
del _interface
2270
956
2271
957
2272
class ProxyClient:
2273
def __init__(self, child_pipe, key_id, fpr, address):
2274
self._pipe = child_pipe
2275
self._pipe.send(('init', key_id, fpr, address))
2276
if not self._pipe.recv():
2277
raise KeyError(key_id or fpr)
2278
2279
def __getattribute__(self, name):
2280
if name == '_pipe':
2281
return super(ProxyClient, self).__getattribute__(name)
2282
self._pipe.send(('getattr', name))
2283
data = self._pipe.recv()
2284
if data[0] == 'data':
2285
return data[1]
2286
if data[0] == 'function':
2287
2288
def func(*args, **kwargs):
2289
self._pipe.send(('funcall', name, args, kwargs))
2290
return self._pipe.recv()[1]
2291
2292
return func
2293
2294
def __setattr__(self, name, value):
2295
if name == '_pipe':
2296
return super(ProxyClient, self).__setattr__(name, value)
2297
self._pipe.send(('setattr', name, value))
2298
2299
2300
958
class ClientHandler(socketserver.BaseRequestHandler, object):
2301
959
"""A class to handle client connections.
2302
960
2303
961
Instantiated once for each connection to handle it.
2304
962
Note: This will run in its own forked process."""
2305
963
2306
964
def handle(self):
2307
with contextlib.closing(self.server.child_pipe) as child_pipe:
2308
logger.info("TCP connection from: %s",
2309
str(self.client_address))
2310
logger.debug("Pipe FD: %d",
2311
self.server.child_pipe.fileno())
2312
2313
session = gnutls.ClientSession(self.request)
2314
2315
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2316
# "+AES-256-CBC", "+SHA1",
2317
# "+COMP-NULL", "+CTYPE-OPENPGP",
2318
# "+DHE-DSS"))
965
logger.info(u"TCP connection from: %s",
966
unicode(self.client_address))
967
logger.debug(u"IPC Pipe FD: %d", self.server.pipe[1])
968
# Open IPC pipe to parent process
969
with closing(os.fdopen(self.server.pipe[1], u"w", 1)) as ipc:
970
session = (gnutls.connection
971
.ClientSession(self.request,
972
gnutls.connection
973
.X509Credentials()))
974
975
line = self.request.makefile().readline()
976
logger.debug(u"Protocol version: %r", line)
977
try:
978
if int(line.strip().split()[0]) > 1:
979
raise RuntimeError
980
except (ValueError, IndexError, RuntimeError), error:
981
logger.error(u"Unknown protocol version: %s", error)
982
return
983
984
# Note: gnutls.connection.X509Credentials is really a
985
# generic GnuTLS certificate credentials object so long as
986
# no X.509 keys are added to it. Therefore, we can use it
987
# here despite using OpenPGP certificates.
988
989
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
990
# u"+AES-256-CBC", u"+SHA1",
991
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
992
# u"+DHE-DSS"))
2319
993
# Use a fallback default, since this MUST be set.
2320
994
priority = self.server.gnutls_priority
2321
995
if priority is None:
2322
priority = "NORMAL"
2323
gnutls.priority_set_direct(session,
2324
priority.encode("utf-8"), None)
2325
2326
# Start communication using the Mandos protocol
2327
# Get protocol number
2328
line = self.request.makefile().readline()
2329
logger.debug("Protocol version: %r", line)
2330
try:
2331
if int(line.strip().split()[0]) > 1:
2332
raise RuntimeError(line)
2333
except (ValueError, IndexError, RuntimeError) as error:
2334
logger.error("Unknown protocol version: %s", error)
2335
return
2336
2337
# Start GnuTLS connection
996
priority = u"NORMAL"
997
(gnutls.library.functions
998
.gnutls_priority_set_direct(session._c_object,
999
priority, None))
1000
2338
1001
try:
2339
1002
session.handshake()
2340
except gnutls.Error as error:
2341
logger.warning("Handshake failed: %s", error)
1003
except gnutls.errors.GNUTLSError, error:
1004
logger.warning(u"Handshake failed: %s", error)
2342
1005
# Do not run session.bye() here: the session is not
2343
1006
# established. Just abandon the request.
2344
1007
return
2345
logger.debug("Handshake succeeded")
2346
2347
approval_required = False
1008
logger.debug(u"Handshake succeeded")
2348
1009
try:
2349
if gnutls.has_rawpk:
2350
fpr = b""
2351
try:
2352
key_id = self.key_id(
2353
self.peer_certificate(session))
2354
except (TypeError, gnutls.Error) as error:
2355
logger.warning("Bad certificate: %s", error)
2356
return
2357
logger.debug("Key ID: %s",
2358
key_id.decode("utf-8",
2359
errors="replace"))
2360
2361
else:
2362
key_id = b""
2363
try:
2364
fpr = self.fingerprint(
2365
self.peer_certificate(session))
2366
except (TypeError, gnutls.Error) as error:
2367
logger.warning("Bad certificate: %s", error)
2368
return
2369
logger.debug("Fingerprint: %s", fpr)
2370
2371
try:
2372
client = ProxyClient(child_pipe, key_id, fpr,
2373
self.client_address)
2374
except KeyError:
2375
return
2376
2377
if client.approval_delay:
2378
delay = client.approval_delay
2379
client.approvals_pending += 1
2380
approval_required = True
2381
2382
while True:
2383
if not client.enabled:
2384
logger.info("Client %s is disabled",
2385
client.name)
2386
if self.server.use_dbus:
2387
# Emit D-Bus signal
2388
client.Rejected("Disabled")
2389
return
2390
2391
if client.approved or not client.approval_delay:
2392
# We are approved or approval is disabled
2393
break
2394
elif client.approved is None:
2395
logger.info("Client %s needs approval",
2396
client.name)
2397
if self.server.use_dbus:
2398
# Emit D-Bus signal
2399
client.NeedApproval(
2400
client.approval_delay.total_seconds()
2401
* 1000, client.approved_by_default)
2402
else:
2403
logger.warning("Client %s was not approved",
2404
client.name)
2405
if self.server.use_dbus:
2406
# Emit D-Bus signal
2407
client.Rejected("Denied")
2408
return
2409
2410
# wait until timeout or approved
2411
time = datetime.datetime.now()
2412
client.changedstate.acquire()
2413
client.changedstate.wait(delay.total_seconds())
2414
client.changedstate.release()
2415
time2 = datetime.datetime.now()
2416
if (time2 - time) >= delay:
2417
if not client.approved_by_default:
2418
logger.warning("Client %s timed out while"
2419
" waiting for approval",
2420
client.name)
2421
if self.server.use_dbus:
2422
# Emit D-Bus signal
2423
client.Rejected("Approval timed out")
2424
return
2425
else:
2426
break
2427
else:
2428
delay -= time2 - time
2429
2430
try:
2431
session.send(client.secret)
2432
except gnutls.Error as error:
2433
logger.warning("gnutls send failed",
2434
exc_info=error)
2435
return
2436
2437
logger.info("Sending secret to %s", client.name)
2438
# bump the timeout using extended_timeout
2439
client.bump_timeout(client.extended_timeout)
2440
if self.server.use_dbus:
2441
# Emit D-Bus signal
2442
client.GotSecret()
2443
2444
finally:
2445
if approval_required:
2446
client.approvals_pending -= 1
2447
try:
2448
session.bye()
2449
except gnutls.Error as error:
2450
logger.warning("GnuTLS bye failed",
2451
exc_info=error)
2452
1010
fpr = self.fingerprint(self.peer_certificate(session))
1011
except (TypeError, gnutls.errors.GNUTLSError), error:
1012
logger.warning(u"Bad certificate: %s", error)
1013
session.bye()
1014
return
1015
logger.debug(u"Fingerprint: %s", fpr)
1016
1017
for c in self.server.clients:
1018
if c.fingerprint == fpr:
1019
client = c
1020
break
1021
else:
1022
ipc.write(u"NOTFOUND %s %s\n"
1023
% (fpr, unicode(self.client_address)))
1024
session.bye()
1025
return
1026
# Have to check if client.still_valid(), since it is
1027
# possible that the client timed out while establishing
1028
# the GnuTLS session.
1029
if not client.still_valid():
1030
ipc.write(u"INVALID %s\n" % client.name)
1031
session.bye()
1032
return
1033
ipc.write(u"SENDING %s\n" % client.name)
1034
sent_size = 0
1035
while sent_size < len(client.secret):
1036
sent = session.send(client.secret[sent_size:])
1037
logger.debug(u"Sent: %d, remaining: %d",
1038
sent, len(client.secret)
1039
- (sent_size + sent))
1040
sent_size += sent
1041
session.bye()
1042
2453
1043
@staticmethod
2454
1044
def peer_certificate(session):
2455
"Return the peer's certificate as a bytestring"
2456
try:
2457
cert_type = gnutls.certificate_type_get2(
2458
session, gnutls.CTYPE_PEERS)
2459
except AttributeError:
2460
cert_type = gnutls.certificate_type_get(session)
2461
if gnutls.has_rawpk:
2462
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2463
else:
2464
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2465
# If not a valid certificate type...
2466
if cert_type not in valid_cert_types:
2467
logger.info("Cert type %r not in %r", cert_type,
2468
valid_cert_types)
2469
# ...return invalid data
2470
return b""
1045
"Return the peer's OpenPGP certificate as a bytestring"
1046
# If not an OpenPGP certificate...
1047
if (gnutls.library.functions
1048
.gnutls_certificate_type_get(session._c_object)
1049
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1050
# ...do the normal thing
1051
return session.peer_certificate
2471
1052
list_size = ctypes.c_uint(1)
2472
cert_list = (gnutls.certificate_get_peers
2473
(session, ctypes.byref(list_size)))
1053
cert_list = (gnutls.library.functions
1054
.gnutls_certificate_get_peers
1055
(session._c_object, ctypes.byref(list_size)))
2474
1056
if not bool(cert_list) and list_size.value != 0:
2475
raise gnutls.Error("error getting peer certificate")
1057
raise gnutls.errors.GNUTLSError(u"error getting peer"
1058
u" certificate")
2476
1059
if list_size.value == 0:
2477
1060
return None
2478
1061
cert = cert_list[0]
2479
1062
return ctypes.string_at(cert.data, cert.size)
2480
2481
@staticmethod
2482
def key_id(certificate):
2483
"Convert a certificate bytestring to a hexdigit key ID"
2484
# New GnuTLS "datum" with the public key
2485
datum = gnutls.datum_t(
2486
ctypes.cast(ctypes.c_char_p(certificate),
2487
ctypes.POINTER(ctypes.c_ubyte)),
2488
ctypes.c_uint(len(certificate)))
2489
# XXX all these need to be created in the gnutls "module"
2490
# New empty GnuTLS certificate
2491
pubkey = gnutls.pubkey_t()
2492
gnutls.pubkey_init(ctypes.byref(pubkey))
2493
# Import the raw public key into the certificate
2494
gnutls.pubkey_import(pubkey,
2495
ctypes.byref(datum),
2496
gnutls.X509_FMT_DER)
2497
# New buffer for the key ID
2498
buf = ctypes.create_string_buffer(32)
2499
buf_len = ctypes.c_size_t(len(buf))
2500
# Get the key ID from the raw public key into the buffer
2501
gnutls.pubkey_get_key_id(
2502
pubkey,
2503
gnutls.KEYID_USE_SHA256,
2504
ctypes.cast(ctypes.byref(buf),
2505
ctypes.POINTER(ctypes.c_ubyte)),
2506
ctypes.byref(buf_len))
2507
# Deinit the certificate
2508
gnutls.pubkey_deinit(pubkey)
2509
2510
# Convert the buffer to a Python bytestring
2511
key_id = ctypes.string_at(buf, buf_len.value)
2512
# Convert the bytestring to hexadecimal notation
2513
hex_key_id = binascii.hexlify(key_id).upper()
2514
return hex_key_id
2515
1063
2516
1064
@staticmethod
2517
1065
def fingerprint(openpgp):
2518
1066
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2519
1067
# New GnuTLS "datum" with the OpenPGP public key
2520
datum = gnutls.datum_t(
2521
ctypes.cast(ctypes.c_char_p(openpgp),
2522
ctypes.POINTER(ctypes.c_ubyte)),
2523
ctypes.c_uint(len(openpgp)))
1068
datum = (gnutls.library.types
1069
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1070
ctypes.POINTER
1071
(ctypes.c_ubyte)),
1072
ctypes.c_uint(len(openpgp))))
2524
1073
# New empty GnuTLS certificate
2525
crt = gnutls.openpgp_crt_t()
2526
gnutls.openpgp_crt_init(ctypes.byref(crt))
1074
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1075
(gnutls.library.functions
1076
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2527
1077
# Import the OpenPGP public key into the certificate
2528
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2529
gnutls.OPENPGP_FMT_RAW)
1078
(gnutls.library.functions
1079
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1080
gnutls.library.constants
1081
.GNUTLS_OPENPGP_FMT_RAW))
2530
1082
# Verify the self signature in the key
2531
1083
crtverify = ctypes.c_uint()
2532
gnutls.openpgp_crt_verify_self(crt, 0,
2533
ctypes.byref(crtverify))
1084
(gnutls.library.functions
1085
.gnutls_openpgp_crt_verify_self(crt, 0,
1086
ctypes.byref(crtverify)))
2534
1087
if crtverify.value != 0:
2535
gnutls.openpgp_crt_deinit(crt)
2536
raise gnutls.CertificateSecurityError(code
2537
=crtverify.value)
1088
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1089
raise (gnutls.errors.CertificateSecurityError
1090
(u"Verify failed"))
2538
1091
# New buffer for the fingerprint
2539
1092
buf = ctypes.create_string_buffer(20)
2540
1093
buf_len = ctypes.c_size_t()
2541
1094
# Get the fingerprint from the certificate into the buffer
2542
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2543
ctypes.byref(buf_len))
1095
(gnutls.library.functions
1096
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1097
ctypes.byref(buf_len)))
2544
1098
# Deinit the certificate
2545
gnutls.openpgp_crt_deinit(crt)
1099
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2546
1100
# Convert the buffer to a Python bytestring
2547
1101
fpr = ctypes.string_at(buf, buf_len.value)
2548
1102
# Convert the bytestring to hexadecimal notation
2549
hex_fpr = binascii.hexlify(fpr).upper()
1103
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
2550
1104
return hex_fpr
2551
1105
2552
1106
2553
class MultiprocessingMixIn:
2554
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2555
2556
def sub_process_main(self, request, address):
2557
try:
2558
self.finish_request(request, address)
2559
except Exception:
2560
self.handle_error(request, address)
2561
self.close_request(request)
2562
2563
def process_request(self, request, address):
2564
"""Start a new process to process the request."""
2565
proc = multiprocessing.Process(target=self.sub_process_main,
2566
args=(request, address))
2567
proc.start()
2568
return proc
2569
2570
2571
class MultiprocessingMixInWithPipe(MultiprocessingMixIn):
2572
""" adds a pipe to the MixIn """
2573
1107
class ForkingMixInWithPipe(socketserver.ForkingMixIn, object):
1108
"""Like socketserver.ForkingMixIn, but also pass a pipe."""
2574
1109
def process_request(self, request, client_address):
2575
1110
"""Overrides and wraps the original process_request().
2576
1111
2577
1112
This function creates a new pipe in self.pipe
2578
1113
"""
2579
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2580
2581
proc = MultiprocessingMixIn.process_request(self, request,
2582
client_address)
2583
self.child_pipe.close()
2584
self.add_pipe(parent_pipe, proc)
2585
2586
def add_pipe(self, parent_pipe, proc):
1114
self.pipe = os.pipe()
1115
super(ForkingMixInWithPipe,
1116
self).process_request(request, client_address)
1117
os.close(self.pipe[1]) # close write end
1118
self.add_pipe(self.pipe[0])
1119
def add_pipe(self, pipe):
2587
1120
"""Dummy function; override as necessary"""
2588
raise NotImplementedError()
2589
2590
2591
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2592
socketserver.TCPServer):
1121
os.close(pipe)
1122
1123
1124
class IPv6_TCPServer(ForkingMixInWithPipe,
1125
socketserver.TCPServer, object):
2593
1126
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
2594
1127
2595
1128
Attributes:
2596
1129
enabled: Boolean; whether this server is activated yet
2597
1130
interface: None or a network interface name (string)
2598
1131
use_ipv6: Boolean; to use IPv6 or not
2599
1132
"""
2600
2601
1133
def __init__(self, server_address, RequestHandlerClass,
2602
interface=None,
2603
use_ipv6=True,
2604
socketfd=None):
2605
"""If socketfd is set, use that file descriptor instead of
2606
creating a new one with socket.socket().
2607
"""
1134
interface=None, use_ipv6=True):
2608
1135
self.interface = interface
2609
1136
if use_ipv6:
2610
1137
self.address_family = socket.AF_INET6
2611
if socketfd is not None:
2612
# Save the file descriptor
2613
self.socketfd = socketfd
2614
# Save the original socket.socket() function
2615
self.socket_socket = socket.socket
2616
2617
# To implement --socket, we monkey patch socket.socket.
2618
#
2619
# (When socketserver.TCPServer is a new-style class, we
2620
# could make self.socket into a property instead of monkey
2621
# patching socket.socket.)
2622
#
2623
# Create a one-time-only replacement for socket.socket()
2624
@functools.wraps(socket.socket)
2625
def socket_wrapper(*args, **kwargs):
2626
# Restore original function so subsequent calls are
2627
# not affected.
2628
socket.socket = self.socket_socket
2629
del self.socket_socket
2630
# This time only, return a new socket object from the
2631
# saved file descriptor.
2632
return socket.fromfd(self.socketfd, *args, **kwargs)
2633
# Replace socket.socket() function with wrapper
2634
socket.socket = socket_wrapper
2635
# The socketserver.TCPServer.__init__ will call
2636
# socket.socket(), which might be our replacement,
2637
# socket_wrapper(), if socketfd was set.
2638
1138
socketserver.TCPServer.__init__(self, server_address,
2639
1139
RequestHandlerClass)
2640
2641
1140
def server_bind(self):
2642
1141
"""This overrides the normal server_bind() function
2643
1142
to bind to an interface if one was specified, and also NOT to
2644
1143
bind to an address or port if they were not specified."""
2645
global SO_BINDTODEVICE
2646
1144
if self.interface is not None:
2647
1145
if SO_BINDTODEVICE is None:
2648
# Fall back to a hard-coded value which seems to be
2649
# common enough.
2650
logger.warning("SO_BINDTODEVICE not found, trying 25")
2651
SO_BINDTODEVICE = 25
2652
try:
2653
self.socket.setsockopt(
2654
socket.SOL_SOCKET, SO_BINDTODEVICE,
2655
(self.interface + "\0").encode("utf-8"))
2656
except socket.error as error:
2657
if error.errno == errno.EPERM:
2658
logger.error("No permission to bind to"
2659
" interface %s", self.interface)
2660
elif error.errno == errno.ENOPROTOOPT:
2661
logger.error("SO_BINDTODEVICE not available;"
2662
" cannot bind to interface %s",
2663
self.interface)
2664
elif error.errno == errno.ENODEV:
2665
logger.error("Interface %s does not exist,"
2666
" cannot bind", self.interface)
2667
else:
2668
raise
1146
logger.error(u"SO_BINDTODEVICE does not exist;"
1147
u" cannot bind to interface %s",
1148
self.interface)
1149
else:
1150
try:
1151
self.socket.setsockopt(socket.SOL_SOCKET,
1152
SO_BINDTODEVICE,
1153
str(self.interface
1154
+ u'\0'))
1155
except socket.error, error:
1156
if error[0] == errno.EPERM:
1157
logger.error(u"No permission to"
1158
u" bind to interface %s",
1159
self.interface)
1160
elif error[0] == errno.ENOPROTOOPT:
1161
logger.error(u"SO_BINDTODEVICE not available;"
1162
u" cannot bind to interface %s",
1163
self.interface)
1164
else:
1165
raise
2669
1166
# Only bind(2) the socket if we really need to.
2670
1167
if self.server_address[0] or self.server_address[1]:
2671
if self.server_address[1]:
2672
self.allow_reuse_address = True
2673
1168
if not self.server_address[0]:
2674
1169
if self.address_family == socket.AF_INET6:
2675
any_address = "::" # in6addr_any
1170
any_address = u"::" # in6addr_any
2676
1171
else:
2677
any_address = "0.0.0.0" # INADDR_ANY
1172
any_address = socket.INADDR_ANY
2678
1173
self.server_address = (any_address,
2679
1174
self.server_address[1])
2680
1175
elif not self.server_address[1]:
2681
self.server_address = (self.server_address[0], 0)
1176
self.server_address = (self.server_address[0],
1177
0)
2682
1178
# if self.interface:
2683
1179
# self.server_address = (self.server_address[0],
2684
1180
# 0, # port
2690
1186
2691
1187
class MandosServer(IPv6_TCPServer):
2692
1188
"""Mandos server.
2693
1189
2694
1190
Attributes:
2695
1191
clients: set of Client objects
2696
1192
gnutls_priority GnuTLS priority string
2697
1193
use_dbus: Boolean; to emit D-Bus signals or not
2698
2699
Assumes a GLib.MainLoop event loop.
1194
1195
Assumes a gobject.MainLoop event loop.
2700
1196
"""
2701
2702
1197
def __init__(self, server_address, RequestHandlerClass,
2703
interface=None,
2704
use_ipv6=True,
2705
clients=None,
2706
gnutls_priority=None,
2707
use_dbus=True,
2708
socketfd=None):
1198
interface=None, use_ipv6=True, clients=None,
1199
gnutls_priority=None, use_dbus=True):
2709
1200
self.enabled = False
2710
1201
self.clients = clients
2711
1202
if self.clients is None:
2712
self.clients = {}
1203
self.clients = set()
2713
1204
self.use_dbus = use_dbus
2714
1205
self.gnutls_priority = gnutls_priority
2715
1206
IPv6_TCPServer.__init__(self, server_address,
2716
1207
RequestHandlerClass,
2717
interface=interface,
2718
use_ipv6=use_ipv6,
2719
socketfd=socketfd)
2720
1208
interface = interface,
1209
use_ipv6 = use_ipv6)
2721
1210
def server_activate(self):
2722
1211
if self.enabled:
2723
1212
return socketserver.TCPServer.server_activate(self)
2724
2725
1213
def enable(self):
2726
1214
self.enabled = True
2727
2728
def add_pipe(self, parent_pipe, proc):
1215
def add_pipe(self, pipe):
2729
1216
# Call "handle_ipc" for both data and EOF events
2730
GLib.io_add_watch(
2731
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2732
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2733
functools.partial(self.handle_ipc,
2734
parent_pipe=parent_pipe,
2735
proc=proc))
2736
2737
def handle_ipc(self, source, condition,
2738
parent_pipe=None,
2739
proc=None,
2740
client_object=None):
2741
# error, or the other end of multiprocessing.Pipe has closed
2742
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2743
# Wait for other process to exit
2744
proc.join()
2745
return False
2746
2747
# Read a request from the child
2748
request = parent_pipe.recv()
2749
command = request[0]
2750
2751
if command == 'init':
2752
key_id = request[1].decode("ascii")
2753
fpr = request[2].decode("ascii")
2754
address = request[3]
2755
2756
for c in self.clients.values():
2757
if key_id == ("E3B0C44298FC1C149AFBF4C8996FB924"
2758
"27AE41E4649B934CA495991B7852B855"):
2759
continue
2760
if key_id and c.key_id == key_id:
2761
client = c
2762
break
2763
if fpr and c.fingerprint == fpr:
2764
client = c
2765
break
2766
else:
2767
logger.info("Client not found for key ID: %s, address"
2768
": %s", key_id or fpr, address)
2769
if self.use_dbus:
2770
# Emit D-Bus signal
2771
mandos_dbus_service.ClientNotFound(key_id or fpr,
2772
address[0])
2773
parent_pipe.send(False)
2774
return False
2775
2776
GLib.io_add_watch(
2777
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2778
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2779
functools.partial(self.handle_ipc,
2780
parent_pipe=parent_pipe,
2781
proc=proc,
2782
client_object=client))
2783
parent_pipe.send(True)
2784
# remove the old hook in favor of the new above hook on
2785
# same fileno
2786
return False
2787
if command == 'funcall':
2788
funcname = request[1]
2789
args = request[2]
2790
kwargs = request[3]
2791
2792
parent_pipe.send(('data', getattr(client_object,
2793
funcname)(*args,
2794
**kwargs)))
2795
2796
if command == 'getattr':
2797
attrname = request[1]
2798
if isinstance(client_object.__getattribute__(attrname),
2799
collections.abc.Callable):
2800
parent_pipe.send(('function', ))
2801
else:
2802
parent_pipe.send((
2803
'data', client_object.__getattribute__(attrname)))
2804
2805
if command == 'setattr':
2806
attrname = request[1]
2807
value = request[2]
2808
setattr(client_object, attrname, value)
2809
1217
gobject.io_add_watch(pipe, gobject.IO_IN | gobject.IO_HUP,
1218
self.handle_ipc)
1219
def handle_ipc(self, source, condition, file_objects={}):
1220
condition_names = {
1221
gobject.IO_IN: u"IN", # There is data to read.
1222
gobject.IO_OUT: u"OUT", # Data can be written (without
1223
# blocking).
1224
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1225
gobject.IO_ERR: u"ERR", # Error condition.
1226
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1227
# broken, usually for pipes and
1228
# sockets).
1229
}
1230
conditions_string = ' | '.join(name
1231
for cond, name in
1232
condition_names.iteritems()
1233
if cond & condition)
1234
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1235
conditions_string)
1236
1237
# Turn the pipe file descriptor into a Python file object
1238
if source not in file_objects:
1239
file_objects[source] = os.fdopen(source, u"r", 1)
1240
1241
# Read a line from the file object
1242
cmdline = file_objects[source].readline()
1243
if not cmdline: # Empty line means end of file
1244
# close the IPC pipe
1245
file_objects[source].close()
1246
del file_objects[source]
1247
1248
# Stop calling this function
1249
return False
1250
1251
logger.debug(u"IPC command: %r", cmdline)
1252
1253
# Parse and act on command
1254
cmd, args = cmdline.rstrip(u"\r\n").split(None, 1)
1255
1256
if cmd == u"NOTFOUND":
1257
logger.warning(u"Client not found for fingerprint: %s",
1258
args)
1259
if self.use_dbus:
1260
# Emit D-Bus signal
1261
mandos_dbus_service.ClientNotFound(args)
1262
elif cmd == u"INVALID":
1263
for client in self.clients:
1264
if client.name == args:
1265
logger.warning(u"Client %s is invalid", args)
1266
if self.use_dbus:
1267
# Emit D-Bus signal
1268
client.Rejected()
1269
break
1270
else:
1271
logger.error(u"Unknown client %s is invalid", args)
1272
elif cmd == u"SENDING":
1273
for client in self.clients:
1274
if client.name == args:
1275
logger.info(u"Sending secret to %s", client.name)
1276
client.checked_ok()
1277
if self.use_dbus:
1278
# Emit D-Bus signal
1279
client.ReceivedSecret()
1280
break
1281
else:
1282
logger.error(u"Sending secret to unknown client %s",
1283
args)
1284
else:
1285
logger.error(u"Unknown IPC command: %r", cmdline)
1286
1287
# Keep calling this function
2810
1288
return True
2811
1289
2812
1290
2813
def rfc3339_duration_to_delta(duration):
2814
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2815
2816
>>> timedelta = datetime.timedelta
2817
>>> rfc3339_duration_to_delta("P7D") == timedelta(7)
2818
True
2819
>>> rfc3339_duration_to_delta("PT60S") == timedelta(0, 60)
2820
True
2821
>>> rfc3339_duration_to_delta("PT60M") == timedelta(0, 3600)
2822
True
2823
>>> rfc3339_duration_to_delta("PT24H") == timedelta(1)
2824
True
2825
>>> rfc3339_duration_to_delta("P1W") == timedelta(7)
2826
True
2827
>>> rfc3339_duration_to_delta("PT5M30S") == timedelta(0, 330)
2828
True
2829
>>> rfc3339_duration_to_delta("P1DT3M20S") == timedelta(1, 200)
2830
True
2831
>>> del timedelta
2832
"""
2833
2834
# Parsing an RFC 3339 duration with regular expressions is not
2835
# possible - there would have to be multiple places for the same
2836
# values, like seconds. The current code, while more esoteric, is
2837
# cleaner without depending on a parsing library. If Python had a
2838
# built-in library for parsing we would use it, but we'd like to
2839
# avoid excessive use of external libraries.
2840
2841
# New type for defining tokens, syntax, and semantics all-in-one
2842
Token = collections.namedtuple("Token", (
2843
"regexp", # To match token; if "value" is not None, must have
2844
# a "group" containing digits
2845
"value", # datetime.timedelta or None
2846
"followers")) # Tokens valid after this token
2847
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2848
# the "duration" ABNF definition in RFC 3339, Appendix A.
2849
token_end = Token(re.compile(r"$"), None, frozenset())
2850
token_second = Token(re.compile(r"(\d+)S"),
2851
datetime.timedelta(seconds=1),
2852
frozenset((token_end, )))
2853
token_minute = Token(re.compile(r"(\d+)M"),
2854
datetime.timedelta(minutes=1),
2855
frozenset((token_second, token_end)))
2856
token_hour = Token(re.compile(r"(\d+)H"),
2857
datetime.timedelta(hours=1),
2858
frozenset((token_minute, token_end)))
2859
token_time = Token(re.compile(r"T"),
2860
None,
2861
frozenset((token_hour, token_minute,
2862
token_second)))
2863
token_day = Token(re.compile(r"(\d+)D"),
2864
datetime.timedelta(days=1),
2865
frozenset((token_time, token_end)))
2866
token_month = Token(re.compile(r"(\d+)M"),
2867
datetime.timedelta(weeks=4),
2868
frozenset((token_day, token_end)))
2869
token_year = Token(re.compile(r"(\d+)Y"),
2870
datetime.timedelta(weeks=52),
2871
frozenset((token_month, token_end)))
2872
token_week = Token(re.compile(r"(\d+)W"),
2873
datetime.timedelta(weeks=1),
2874
frozenset((token_end, )))
2875
token_duration = Token(re.compile(r"P"), None,
2876
frozenset((token_year, token_month,
2877
token_day, token_time,
2878
token_week)))
2879
# Define starting values:
2880
# Value so far
2881
value = datetime.timedelta()
2882
found_token = None
2883
# Following valid tokens
2884
followers = frozenset((token_duration, ))
2885
# String left to parse
2886
s = duration
2887
# Loop until end token is found
2888
while found_token is not token_end:
2889
# Search for any currently valid tokens
2890
for token in followers:
2891
match = token.regexp.match(s)
2892
if match is not None:
2893
# Token found
2894
if token.value is not None:
2895
# Value found, parse digits
2896
factor = int(match.group(1), 10)
2897
# Add to value so far
2898
value += factor * token.value
2899
# Strip token from string
2900
s = token.regexp.sub("", s, 1)
2901
# Go to found token
2902
found_token = token
2903
# Set valid next tokens
2904
followers = found_token.followers
2905
break
2906
else:
2907
# No currently valid tokens were found
2908
raise ValueError("Invalid RFC 3339 duration: {!r}"
2909
.format(duration))
2910
# End token found
2911
return value
2912
2913
2914
1291
def string_to_delta(interval):
2915
1292
"""Parse a string and return a datetime.timedelta
2916
2917
>>> string_to_delta('7d') == datetime.timedelta(7)
2918
True
2919
>>> string_to_delta('60s') == datetime.timedelta(0, 60)
2920
True
2921
>>> string_to_delta('60m') == datetime.timedelta(0, 3600)
2922
True
2923
>>> string_to_delta('24h') == datetime.timedelta(1)
2924
True
2925
>>> string_to_delta('1w') == datetime.timedelta(7)
2926
True
2927
>>> string_to_delta('5m 30s') == datetime.timedelta(0, 330)
2928
True
1293
1294
>>> string_to_delta(u'7d')
1295
datetime.timedelta(7)
1296
>>> string_to_delta(u'60s')
1297
datetime.timedelta(0, 60)
1298
>>> string_to_delta(u'60m')
1299
datetime.timedelta(0, 3600)
1300
>>> string_to_delta(u'24h')
1301
datetime.timedelta(1)
1302
>>> string_to_delta(u'1w')
1303
datetime.timedelta(7)
1304
>>> string_to_delta(u'5m 30s')
1305
datetime.timedelta(0, 330)
2929
1306
"""
2930
2931
try:
2932
return rfc3339_duration_to_delta(interval)
2933
except ValueError:
2934
pass
2935
2936
1307
timevalue = datetime.timedelta(0)
2937
1308
for s in interval.split():
2938
1309
try:
2939
suffix = s[-1]
1310
suffix = unicode(s[-1])
2940
1311
value = int(s[:-1])
2941
if suffix == "d":
1312
if suffix == u"d":
2942
1313
delta = datetime.timedelta(value)
2943
elif suffix == "s":
1314
elif suffix == u"s":
2944
1315
delta = datetime.timedelta(0, value)
2945
elif suffix == "m":
1316
elif suffix == u"m":
2946
1317
delta = datetime.timedelta(0, 0, 0, 0, value)
2947
elif suffix == "h":
1318
elif suffix == u"h":
2948
1319
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
2949
elif suffix == "w":
1320
elif suffix == u"w":
2950
1321
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2951
1322
else:
2952
raise ValueError("Unknown suffix {!r}".format(suffix))
2953
except IndexError as e:
2954
raise ValueError(*(e.args))
1323
raise ValueError
1324
except (ValueError, IndexError):
1325
raise ValueError
2955
1326
timevalue += delta
2956
1327
return timevalue
2957
1328
2958
1329
2959
def daemon(nochdir=False, noclose=False):
1330
def if_nametoindex(interface):
1331
"""Call the C function if_nametoindex(), or equivalent
1332
1333
Note: This function cannot accept a unicode string."""
1334
global if_nametoindex
1335
try:
1336
if_nametoindex = (ctypes.cdll.LoadLibrary
1337
(ctypes.util.find_library(u"c"))
1338
.if_nametoindex)
1339
except (OSError, AttributeError):
1340
logger.warning(u"Doing if_nametoindex the hard way")
1341
def if_nametoindex(interface):
1342
"Get an interface index the hard way, i.e. using fcntl()"
1343
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1344
with closing(socket.socket()) as s:
1345
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1346
struct.pack(str(u"16s16x"),
1347
interface))
1348
interface_index = struct.unpack(str(u"I"),
1349
ifreq[16:20])[0]
1350
return interface_index
1351
return if_nametoindex(interface)
1352
1353
1354
def daemon(nochdir = False, noclose = False):
2960
1355
"""See daemon(3). Standard BSD Unix function.
2961
1356
2962
1357
This should really exist as os.daemon, but it doesn't (yet)."""
2963
1358
if os.fork():
2964
1359
sys.exit()
2965
1360
os.setsid()
2966
1361
if not nochdir:
2967
os.chdir("/")
1362
os.chdir(u"/")
2968
1363
if os.fork():
2969
1364
sys.exit()
2970
1365
if not noclose:
2971
1366
# Close all standard open file descriptors
2972
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1367
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2973
1368
if not stat.S_ISCHR(os.fstat(null).st_mode):
2974
1369
raise OSError(errno.ENODEV,
2975
"{} not a character device"
2976
.format(os.devnull))
1370
u"/dev/null not a character device")
2977
1371
os.dup2(null, sys.stdin.fileno())
2978
1372
os.dup2(null, sys.stdout.fileno())
2979
1373
os.dup2(null, sys.stderr.fileno())
2982
1376
2983
1377
2984
1378
def main():
2985
1379
2986
1380
##################################################################
2987
1381
# Parsing of options, both command line and config file
2988
2989
parser = argparse.ArgumentParser()
2990
parser.add_argument("-v", "--version", action="version",
2991
version="%(prog)s {}".format(version),
2992
help="show version number and exit")
2993
parser.add_argument("-i", "--interface", metavar="IF",
2994
help="Bind to interface IF")
2995
parser.add_argument("-a", "--address",
2996
help="Address to listen for requests on")
2997
parser.add_argument("-p", "--port", type=int,
2998
help="Port number to receive requests on")
2999
parser.add_argument("--check", action="store_true",
3000
help="Run self-test")
3001
parser.add_argument("--debug", action="store_true",
3002
help="Debug mode; run in foreground and log"
3003
" to terminal", default=None)
3004
parser.add_argument("--debuglevel", metavar="LEVEL",
3005
help="Debug level for stdout output")
3006
parser.add_argument("--priority", help="GnuTLS"
3007
" priority string (see GnuTLS documentation)")
3008
parser.add_argument("--servicename",
3009
metavar="NAME", help="Zeroconf service name")
3010
parser.add_argument("--configdir",
3011
default="/etc/mandos", metavar="DIR",
3012
help="Directory to search for configuration"
3013
" files")
3014
parser.add_argument("--no-dbus", action="store_false",
3015
dest="use_dbus", help="Do not provide D-Bus"
3016
" system bus interface", default=None)
3017
parser.add_argument("--no-ipv6", action="store_false",
3018
dest="use_ipv6", help="Do not use IPv6",
3019
default=None)
3020
parser.add_argument("--no-restore", action="store_false",
3021
dest="restore", help="Do not restore stored"
3022
" state", default=None)
3023
parser.add_argument("--socket", type=int,
3024
help="Specify a file descriptor to a network"
3025
" socket to use instead of creating one")
3026
parser.add_argument("--statedir", metavar="DIR",
3027
help="Directory to save/restore state in")
3028
parser.add_argument("--foreground", action="store_true",
3029
help="Run in foreground", default=None)
3030
parser.add_argument("--no-zeroconf", action="store_false",
3031
dest="zeroconf", help="Do not use Zeroconf",
3032
default=None)
3033
3034
options = parser.parse_args()
3035
1382
1383
parser = optparse.OptionParser(version = "%%prog %s" % version)
1384
parser.add_option("-i", u"--interface", type=u"string",
1385
metavar="IF", help=u"Bind to interface IF")
1386
parser.add_option("-a", u"--address", type=u"string",
1387
help=u"Address to listen for requests on")
1388
parser.add_option("-p", u"--port", type=u"int",
1389
help=u"Port number to receive requests on")
1390
parser.add_option("--check", action=u"store_true",
1391
help=u"Run self-test")
1392
parser.add_option("--debug", action=u"store_true",
1393
help=u"Debug mode; run in foreground and log to"
1394
u" terminal")
1395
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1396
u" priority string (see GnuTLS documentation)")
1397
parser.add_option("--servicename", type=u"string",
1398
metavar=u"NAME", help=u"Zeroconf service name")
1399
parser.add_option("--configdir", type=u"string",
1400
default=u"/etc/mandos", metavar=u"DIR",
1401
help=u"Directory to search for configuration"
1402
u" files")
1403
parser.add_option("--no-dbus", action=u"store_false",
1404
dest=u"use_dbus", help=u"Do not provide D-Bus"
1405
u" system bus interface")
1406
parser.add_option("--no-ipv6", action=u"store_false",
1407
dest=u"use_ipv6", help=u"Do not use IPv6")
1408
options = parser.parse_args()[0]
1409
1410
if options.check:
1411
import doctest
1412
doctest.testmod()
1413
sys.exit()
1414
3036
1415
# Default values for config file for server-global settings
3037
if gnutls.has_rawpk:
3038
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
3039
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
3040
else:
3041
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
3042
":+SIGN-DSA-SHA256")
3043
server_defaults = {"interface": "",
3044
"address": "",
3045
"port": "",
3046
"debug": "False",
3047
"priority": priority,
3048
"servicename": "Mandos",
3049
"use_dbus": "True",
3050
"use_ipv6": "True",
3051
"debuglevel": "",
3052
"restore": "True",
3053
"socket": "",
3054
"statedir": "/var/lib/mandos",
3055
"foreground": "False",
3056
"zeroconf": "True",
3057
}
3058
del priority
3059
1416
server_defaults = { u"interface": u"",
1417
u"address": u"",
1418
u"port": u"",
1419
u"debug": u"False",
1420
u"priority":
1421
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1422
u"servicename": u"Mandos",
1423
u"use_dbus": u"True",
1424
u"use_ipv6": u"True",
1425
}
1426
3060
1427
# Parse config file for server-global settings
3061
server_config = configparser.ConfigParser(server_defaults)
1428
server_config = configparser.SafeConfigParser(server_defaults)
3062
1429
del server_defaults
3063
server_config.read(os.path.join(options.configdir, "mandos.conf"))
3064
# Convert the ConfigParser object to a dict
1430
server_config.read(os.path.join(options.configdir,
1431
u"mandos.conf"))
1432
# Convert the SafeConfigParser object to a dict
3065
1433
server_settings = server_config.defaults()
3066
1434
# Use the appropriate methods on the non-string config options
3067
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3068
"foreground", "zeroconf"):
3069
server_settings[option] = server_config.getboolean("DEFAULT",
1435
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1436
server_settings[option] = server_config.getboolean(u"DEFAULT",
3070
1437
option)
3071
1438
if server_settings["port"]:
3072
server_settings["port"] = server_config.getint("DEFAULT",
3073
"port")
3074
if server_settings["socket"]:
3075
server_settings["socket"] = server_config.getint("DEFAULT",
3076
"socket")
3077
# Later, stdin will, and stdout and stderr might, be dup'ed
3078
# over with an opened os.devnull. But we don't want this to
3079
# happen with a supplied network socket.
3080
if 0 <= server_settings["socket"] <= 2:
3081
server_settings["socket"] = os.dup(server_settings
3082
["socket"])
1439
server_settings["port"] = server_config.getint(u"DEFAULT",
1440
u"port")
3083
1441
del server_config
3084
1442
3085
1443
# Override the settings from the config file with command line
3086
1444
# options, if set.
3087
for option in ("interface", "address", "port", "debug",
3088
"priority", "servicename", "configdir", "use_dbus",
3089
"use_ipv6", "debuglevel", "restore", "statedir",
3090
"socket", "foreground", "zeroconf"):
1445
for option in (u"interface", u"address", u"port", u"debug",
1446
u"priority", u"servicename", u"configdir",
1447
u"use_dbus", u"use_ipv6"):
3091
1448
value = getattr(options, option)
3092
1449
if value is not None:
3093
1450
server_settings[option] = value
3094
1451
del options
3095
1452
# Force all strings to be unicode
3096
1453
for option in server_settings.keys():
3097
if isinstance(server_settings[option], bytes):
3098
server_settings[option] = (server_settings[option]
3099
.decode("utf-8"))
3100
# Force all boolean options to be boolean
3101
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3102
"foreground", "zeroconf"):
3103
server_settings[option] = bool(server_settings[option])
3104
# Debug implies foreground
3105
if server_settings["debug"]:
3106
server_settings["foreground"] = True
1454
if type(server_settings[option]) is str:
1455
server_settings[option] = unicode(server_settings[option])
3107
1456
# Now we have our good server settings in "server_settings"
3108
1457
3109
1458
##################################################################
3110
3111
if (not server_settings["zeroconf"]
3112
and not (server_settings["port"]
3113
or server_settings["socket"] != "")):
3114
parser.error("Needs port or socket to work without Zeroconf")
3115
1459
3116
1460
# For convenience
3117
debug = server_settings["debug"]
3118
debuglevel = server_settings["debuglevel"]
3119
use_dbus = server_settings["use_dbus"]
3120
use_ipv6 = server_settings["use_ipv6"]
3121
stored_state_path = os.path.join(server_settings["statedir"],
3122
stored_state_file)
3123
foreground = server_settings["foreground"]
3124
zeroconf = server_settings["zeroconf"]
3125
3126
if debug:
3127
initlogger(debug, logging.DEBUG)
3128
else:
3129
if not debuglevel:
3130
initlogger(debug)
3131
else:
3132
level = getattr(logging, debuglevel.upper())
3133
initlogger(debug, level)
3134
3135
if server_settings["servicename"] != "Mandos":
3136
syslogger.setFormatter(
3137
logging.Formatter('Mandos ({}) [%(process)d]:'
3138
' %(levelname)s: %(message)s'.format(
3139
server_settings["servicename"])))
3140
1461
debug = server_settings[u"debug"]
1462
use_dbus = server_settings[u"use_dbus"]
1463
use_ipv6 = server_settings[u"use_ipv6"]
1464
1465
if not debug:
1466
syslogger.setLevel(logging.WARNING)
1467
console.setLevel(logging.WARNING)
1468
1469
if server_settings[u"servicename"] != u"Mandos":
1470
syslogger.setFormatter(logging.Formatter
1471
(u'Mandos (%s) [%%(process)d]:'
1472
u' %%(levelname)s: %%(message)s'
1473
% server_settings[u"servicename"]))
1474
3141
1475
# Parse config file with clients
3142
client_config = configparser.ConfigParser(Client.client_defaults)
3143
client_config.read(os.path.join(server_settings["configdir"],
3144
"clients.conf"))
3145
1476
client_defaults = { u"timeout": u"1h",
1477
u"interval": u"5m",
1478
u"checker": u"fping -q -- %%(host)s",
1479
u"host": u"",
1480
}
1481
client_config = configparser.SafeConfigParser(client_defaults)
1482
client_config.read(os.path.join(server_settings[u"configdir"],
1483
u"clients.conf"))
1484
3146
1485
global mandos_dbus_service
3147
1486
mandos_dbus_service = None
3148
3149
socketfd = None
3150
if server_settings["socket"] != "":
3151
socketfd = server_settings["socket"]
3152
tcp_server = MandosServer(
3153
(server_settings["address"], server_settings["port"]),
3154
ClientHandler,
3155
interface=(server_settings["interface"] or None),
3156
use_ipv6=use_ipv6,
3157
gnutls_priority=server_settings["priority"],
3158
use_dbus=use_dbus,
3159
socketfd=socketfd)
3160
if not foreground:
3161
pidfilename = "/run/mandos.pid"
3162
if not os.path.isdir("/run/."):
3163
pidfilename = "/var/run/mandos.pid"
3164
pidfile = None
3165
try:
3166
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3167
except IOError as e:
3168
logger.error("Could not open file %r", pidfilename,
3169
exc_info=e)
3170
3171
for name, group in (("_mandos", "_mandos"),
3172
("mandos", "mandos"),
3173
("nobody", "nogroup")):
3174
try:
3175
uid = pwd.getpwnam(name).pw_uid
3176
gid = pwd.getpwnam(group).pw_gid
3177
break
1487
1488
tcp_server = MandosServer((server_settings[u"address"],
1489
server_settings[u"port"]),
1490
ClientHandler,
1491
interface=server_settings[u"interface"],
1492
use_ipv6=use_ipv6,
1493
gnutls_priority=
1494
server_settings[u"priority"],
1495
use_dbus=use_dbus)
1496
pidfilename = u"/var/run/mandos.pid"
1497
try:
1498
pidfile = open(pidfilename, u"w")
1499
except IOError:
1500
logger.error(u"Could not open file %r", pidfilename)
1501
1502
try:
1503
uid = pwd.getpwnam(u"_mandos").pw_uid
1504
gid = pwd.getpwnam(u"_mandos").pw_gid
1505
except KeyError:
1506
try:
1507
uid = pwd.getpwnam(u"mandos").pw_uid
1508
gid = pwd.getpwnam(u"mandos").pw_gid
3178
1509
except KeyError:
3179
continue
3180
else:
3181
uid = 65534
3182
gid = 65534
1510
try:
1511
uid = pwd.getpwnam(u"nobody").pw_uid
1512
gid = pwd.getpwnam(u"nobody").pw_gid
1513
except KeyError:
1514
uid = 65534
1515
gid = 65534
3183
1516
try:
3184
1517
os.setgid(gid)
3185
1518
os.setuid(uid)
3186
if debug:
3187
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3188
gid))
3189
except OSError as error:
3190
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3191
.format(uid, gid, os.strerror(error.errno)))
3192
if error.errno != errno.EPERM:
3193
raise
3194
1519
except OSError, error:
1520
if error[0] != errno.EPERM:
1521
raise error
1522
1523
# Enable all possible GnuTLS debugging
3195
1524
if debug:
3196
# Enable all possible GnuTLS debugging
3197
3198
1525
# "Use a log level over 10 to enable all debugging options."
3199
1526
# - GnuTLS manual
3200
gnutls.global_set_log_level(11)
3201
3202
@gnutls.log_func
1527
gnutls.library.functions.gnutls_global_set_log_level(11)
1528
1529
@gnutls.library.types.gnutls_log_func
3203
1530
def debug_gnutls(level, string):
3204
logger.debug("GnuTLS: %s",
3205
string[:-1].decode("utf-8",
3206
errors="replace"))
3207
3208
gnutls.global_set_log_function(debug_gnutls)
3209
3210
# Redirect stdin so all checkers get /dev/null
3211
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
3212
os.dup2(null, sys.stdin.fileno())
3213
if null > 2:
3214
os.close(null)
3215
3216
# Need to fork before connecting to D-Bus
3217
if not foreground:
3218
# Close all input and output, do double fork, etc.
3219
daemon()
3220
3221
if gi.version_info < (3, 10, 2):
3222
# multiprocessing will use threads, so before we use GLib we
3223
# need to inform GLib that threads will be used.
3224
GLib.threads_init()
3225
1531
logger.debug(u"GnuTLS: %s", string[:-1])
1532
1533
(gnutls.library.functions
1534
.gnutls_global_set_log_function(debug_gnutls))
1535
3226
1536
global main_loop
3227
1537
# From the Avahi example code
3228
DBusGMainLoop(set_as_default=True)
3229
main_loop = GLib.MainLoop()
1538
DBusGMainLoop(set_as_default=True )
1539
main_loop = gobject.MainLoop()
3230
1540
bus = dbus.SystemBus()
3231
1541
# End of Avahi example code
3232
1542
if use_dbus:
3233
try:
3234
bus_name = dbus.service.BusName("se.recompile.Mandos",
3235
bus,
3236
do_not_queue=True)
3237
old_bus_name = dbus.service.BusName(
3238
"se.bsnet.fukt.Mandos", bus,
3239
do_not_queue=True)
3240
except dbus.exceptions.DBusException as e:
3241
logger.error("Disabling D-Bus:", exc_info=e)
3242
use_dbus = False
3243
server_settings["use_dbus"] = False
3244
tcp_server.use_dbus = False
3245
if zeroconf:
3246
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3247
service = AvahiServiceToSyslog(
3248
name=server_settings["servicename"],
3249
servicetype="_mandos._tcp",
3250
protocol=protocol,
3251
bus=bus)
3252
if server_settings["interface"]:
3253
service.interface = if_nametoindex(
3254
server_settings["interface"].encode("utf-8"))
3255
3256
global multiprocessing_manager
3257
multiprocessing_manager = multiprocessing.Manager()
3258
1543
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos", bus)
1544
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1545
service = AvahiService(name = server_settings[u"servicename"],
1546
servicetype = u"_mandos._tcp",
1547
protocol = protocol, bus = bus)
1548
if server_settings["interface"]:
1549
service.interface = (if_nametoindex
1550
(str(server_settings[u"interface"])))
1551
3259
1552
client_class = Client
3260
1553
if use_dbus:
3261
client_class = functools.partial(ClientDBus, bus=bus)
3262
3263
client_settings = Client.config_parser(client_config)
3264
old_client_settings = {}
3265
clients_data = {}
3266
3267
# This is used to redirect stdout and stderr for checker processes
3268
global wnull
3269
wnull = open(os.devnull, "w") # A writable /dev/null
3270
# Only used if server is running in foreground but not in debug
3271
# mode
3272
if debug or not foreground:
3273
wnull.close()
3274
3275
# Get client data and settings from last running state.
3276
if server_settings["restore"]:
3277
try:
3278
with open(stored_state_path, "rb") as stored_state:
3279
if sys.version_info.major == 2:
3280
clients_data, old_client_settings = pickle.load(
3281
stored_state)
3282
else:
3283
bytes_clients_data, bytes_old_client_settings = (
3284
pickle.load(stored_state, encoding="bytes"))
3285
# Fix bytes to strings
3286
# clients_data
3287
# .keys()
3288
clients_data = {(key.decode("utf-8")
3289
if isinstance(key, bytes)
3290
else key): value
3291
for key, value in
3292
bytes_clients_data.items()}
3293
del bytes_clients_data
3294
for key in clients_data:
3295
value = {(k.decode("utf-8")
3296
if isinstance(k, bytes) else k): v
3297
for k, v in
3298
clients_data[key].items()}
3299
clients_data[key] = value
3300
# .client_structure
3301
value["client_structure"] = [
3302
(s.decode("utf-8")
3303
if isinstance(s, bytes)
3304
else s) for s in
3305
value["client_structure"]]
3306
# .name, .host, and .checker_command
3307
for k in ("name", "host", "checker_command"):
3308
if isinstance(value[k], bytes):
3309
value[k] = value[k].decode("utf-8")
3310
if "key_id" not in value:
3311
value["key_id"] = ""
3312
elif "fingerprint" not in value:
3313
value["fingerprint"] = ""
3314
# old_client_settings
3315
# .keys()
3316
old_client_settings = {
3317
(key.decode("utf-8")
3318
if isinstance(key, bytes)
3319
else key): value
3320
for key, value in
3321
bytes_old_client_settings.items()}
3322
del bytes_old_client_settings
3323
# .host and .checker_command
3324
for value in old_client_settings.values():
3325
for attribute in ("host", "checker_command"):
3326
if isinstance(value[attribute], bytes):
3327
value[attribute] = (value[attribute]
3328
.decode("utf-8"))
3329
os.remove(stored_state_path)
3330
except IOError as e:
3331
if e.errno == errno.ENOENT:
3332
logger.warning("Could not load persistent state:"
3333
" {}".format(os.strerror(e.errno)))
3334
else:
3335
logger.critical("Could not load persistent state:",
3336
exc_info=e)
3337
raise
3338
except EOFError as e:
3339
logger.warning("Could not load persistent state: "
3340
"EOFError:",
3341
exc_info=e)
3342
3343
with PGPEngine() as pgp:
3344
for client_name, client in clients_data.items():
3345
# Skip removed clients
3346
if client_name not in client_settings:
3347
continue
3348
3349
# Decide which value to use after restoring saved state.
3350
# We have three different values: Old config file,
3351
# new config file, and saved state.
3352
# New config value takes precedence if it differs from old
3353
# config value, otherwise use saved state.
3354
for name, value in client_settings[client_name].items():
3355
try:
3356
# For each value in new config, check if it
3357
# differs from the old config value (Except for
3358
# the "secret" attribute)
3359
if (name != "secret"
3360
and (value !=
3361
old_client_settings[client_name][name])):
3362
client[name] = value
3363
except KeyError:
3364
pass
3365
3366
# Clients who has passed its expire date can still be
3367
# enabled if its last checker was successful. A Client
3368
# whose checker succeeded before we stored its state is
3369
# assumed to have successfully run all checkers during
3370
# downtime.
3371
if client["enabled"]:
3372
if datetime.datetime.utcnow() >= client["expires"]:
3373
if not client["last_checked_ok"]:
3374
logger.warning(
3375
"disabling client {} - Client never "
3376
"performed a successful checker".format(
3377
client_name))
3378
client["enabled"] = False
3379
elif client["last_checker_status"] != 0:
3380
logger.warning(
3381
"disabling client {} - Client last"
3382
" checker failed with error code"
3383
" {}".format(
3384
client_name,
3385
client["last_checker_status"]))
3386
client["enabled"] = False
3387
else:
3388
client["expires"] = (
3389
datetime.datetime.utcnow()
3390
+ client["timeout"])
3391
logger.debug("Last checker succeeded,"
3392
" keeping {} enabled".format(
3393
client_name))
3394
try:
3395
client["secret"] = pgp.decrypt(
3396
client["encrypted_secret"],
3397
client_settings[client_name]["secret"])
3398
except PGPError:
3399
# If decryption fails, we use secret from new settings
3400
logger.debug("Failed to decrypt {} old secret".format(
3401
client_name))
3402
client["secret"] = (client_settings[client_name]
3403
["secret"])
3404
3405
# Add/remove clients based on new changes made to config
3406
for client_name in (set(old_client_settings)
3407
- set(client_settings)):
3408
del clients_data[client_name]
3409
for client_name in (set(client_settings)
3410
- set(old_client_settings)):
3411
clients_data[client_name] = client_settings[client_name]
3412
3413
# Create all client objects
3414
for client_name, client in clients_data.items():
3415
tcp_server.clients[client_name] = client_class(
3416
name=client_name,
3417
settings=client,
3418
server_settings=server_settings)
3419
1554
client_class = functools.partial(ClientDBus, bus = bus)
1555
tcp_server.clients.update(set(
1556
client_class(name = section,
1557
config= dict(client_config.items(section)))
1558
for section in client_config.sections()))
3420
1559
if not tcp_server.clients:
3421
logger.warning("No clients defined")
3422
3423
if not foreground:
3424
if pidfile is not None:
1560
logger.warning(u"No clients defined")
1561
1562
if debug:
1563
# Redirect stdin so all checkers get /dev/null
1564
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1565
os.dup2(null, sys.stdin.fileno())
1566
if null > 2:
1567
os.close(null)
1568
else:
1569
# No console logging
1570
logger.removeHandler(console)
1571
# Close all input and output, do double fork, etc.
1572
daemon()
1573
1574
try:
1575
with closing(pidfile):
3425
1576
pid = os.getpid()
3426
try:
3427
with pidfile:
3428
print(pid, file=pidfile)
3429
except IOError:
3430
logger.error("Could not write to file %r with PID %d",
3431
pidfilename, pid)
1577
pidfile.write(str(pid) + "\n")
3432
1578
del pidfile
3433
del pidfilename
3434
3435
for termsig in (signal.SIGHUP, signal.SIGTERM):
3436
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3437
lambda: main_loop.quit() and False)
3438
1579
except IOError:
1580
logger.error(u"Could not write to file %r with PID %d",
1581
pidfilename, pid)
1582
except NameError:
1583
# "pidfile" was never created
1584
pass
1585
del pidfilename
1586
1587
def cleanup():
1588
"Cleanup function; run on exit"
1589
service.cleanup()
1590
1591
while tcp_server.clients:
1592
client = tcp_server.clients.pop()
1593
client.disable_hook = None
1594
client.disable()
1595
1596
atexit.register(cleanup)
1597
1598
if not debug:
1599
signal.signal(signal.SIGINT, signal.SIG_IGN)
1600
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1601
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1602
3439
1603
if use_dbus:
3440
3441
@alternate_dbus_interfaces(
3442
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3443
class MandosDBusService(DBusObjectWithObjectManager):
1604
class MandosDBusService(dbus.service.Object):
3444
1605
"""A D-Bus proxy object"""
3445
3446
1606
def __init__(self):
3447
dbus.service.Object.__init__(self, bus, "/")
3448
3449
_interface = "se.recompile.Mandos"
3450
3451
@dbus.service.signal(_interface, signature="o")
3452
def ClientAdded(self, objpath):
3453
"D-Bus signal"
3454
pass
3455
3456
@dbus.service.signal(_interface, signature="ss")
3457
def ClientNotFound(self, key_id, address):
3458
"D-Bus signal"
3459
pass
3460
3461
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3462
"true"})
3463
@dbus.service.signal(_interface, signature="os")
1607
dbus.service.Object.__init__(self, bus, u"/")
1608
_interface = u"se.bsnet.fukt.Mandos"
1609
1610
@dbus.service.signal(_interface, signature=u"oa{sv}")
1611
def ClientAdded(self, objpath, properties):
1612
"D-Bus signal"
1613
pass
1614
1615
@dbus.service.signal(_interface, signature=u"s")
1616
def ClientNotFound(self, fingerprint):
1617
"D-Bus signal"
1618
pass
1619
1620
@dbus.service.signal(_interface, signature=u"os")
3464
1621
def ClientRemoved(self, objpath, name):
3465
1622
"D-Bus signal"
3466
1623
pass
3467
3468
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3469
"true"})
3470
@dbus.service.method(_interface, out_signature="ao")
1624
1625
@dbus.service.method(_interface, out_signature=u"ao")
3471
1626
def GetAllClients(self):
3472
1627
"D-Bus method"
3473
return dbus.Array(c.dbus_object_path for c in
3474
tcp_server.clients.values())
3475
3476
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3477
"true"})
1628
return dbus.Array(c.dbus_object_path
1629
for c in tcp_server.clients)
1630
3478
1631
@dbus.service.method(_interface,
3479
out_signature="a{oa{sv}}")
1632
out_signature=u"a{oa{sv}}")
3480
1633
def GetAllClientsWithProperties(self):
3481
1634
"D-Bus method"
3482
1635
return dbus.Dictionary(
3483
{c.dbus_object_path: c.GetAll(
3484
"se.recompile.Mandos.Client")
3485
for c in tcp_server.clients.values()},
3486
signature="oa{sv}")
3487
3488
@dbus.service.method(_interface, in_signature="o")
1636
((c.dbus_object_path, c.GetAll(u""))
1637
for c in tcp_server.clients),
1638
signature=u"oa{sv}")
1639
1640
@dbus.service.method(_interface, in_signature=u"o")
3489
1641
def RemoveClient(self, object_path):
3490
1642
"D-Bus method"
3491
for c in tcp_server.clients.values():
1643
for c in tcp_server.clients:
3492
1644
if c.dbus_object_path == object_path:
3493
del tcp_server.clients[c.name]
1645
tcp_server.clients.remove(c)
3494
1646
c.remove_from_connection()
3495
# Don't signal the disabling
3496
c.disable(quiet=True)
3497
# Emit D-Bus signal for removal
3498
self.client_removed_signal(c)
1647
# Don't signal anything except ClientRemoved
1648
c.disable(signal=False)
1649
# Emit D-Bus signal
1650
self.ClientRemoved(object_path, c.name)
3499
1651
return
3500
raise KeyError(object_path)
3501
1652
raise KeyError
1653
3502
1654
del _interface
3503
3504
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3505
out_signature="a{oa{sa{sv}}}")
3506
def GetManagedObjects(self):
3507
"""D-Bus method"""
3508
return dbus.Dictionary(
3509
{client.dbus_object_path:
3510
dbus.Dictionary(
3511
{interface: client.GetAll(interface)
3512
for interface in
3513
client._get_all_interface_names()})
3514
for client in tcp_server.clients.values()})
3515
3516
def client_added_signal(self, client):
3517
"""Send the new standard signal and the old signal"""
3518
if use_dbus:
3519
# New standard signal
3520
self.InterfacesAdded(
3521
client.dbus_object_path,
3522
dbus.Dictionary(
3523
{interface: client.GetAll(interface)
3524
for interface in
3525
client._get_all_interface_names()}))
3526
# Old signal
3527
self.ClientAdded(client.dbus_object_path)
3528
3529
def client_removed_signal(self, client):
3530
"""Send the new standard signal and the old signal"""
3531
if use_dbus:
3532
# New standard signal
3533
self.InterfacesRemoved(
3534
client.dbus_object_path,
3535
client._get_all_interface_names())
3536
# Old signal
3537
self.ClientRemoved(client.dbus_object_path,
3538
client.name)
3539
1655
3540
1656
mandos_dbus_service = MandosDBusService()
3541
3542
# Save modules to variables to exempt the modules from being
3543
# unloaded before the function registered with atexit() is run.
3544
mp = multiprocessing
3545
wn = wnull
3546
3547
def cleanup():
3548
"Cleanup function; run on exit"
3549
if zeroconf:
3550
service.cleanup()
3551
3552
mp.active_children()
3553
wn.close()
3554
if not (tcp_server.clients or client_settings):
3555
return
3556
3557
# Store client before exiting. Secrets are encrypted with key
3558
# based on what config file has. If config file is
3559
# removed/edited, old secret will thus be unrecovable.
3560
clients = {}
3561
with PGPEngine() as pgp:
3562
for client in tcp_server.clients.values():
3563
key = client_settings[client.name]["secret"]
3564
client.encrypted_secret = pgp.encrypt(client.secret,
3565
key)
3566
client_dict = {}
3567
3568
# A list of attributes that can not be pickled
3569
# + secret.
3570
exclude = {"bus", "changedstate", "secret",
3571
"checker", "server_settings"}
3572
for name, typ in inspect.getmembers(dbus.service
3573
.Object):
3574
exclude.add(name)
3575
3576
client_dict["encrypted_secret"] = (client
3577
.encrypted_secret)
3578
for attr in client.client_structure:
3579
if attr not in exclude:
3580
client_dict[attr] = getattr(client, attr)
3581
3582
clients[client.name] = client_dict
3583
del client_settings[client.name]["secret"]
3584
3585
try:
3586
with tempfile.NamedTemporaryFile(
3587
mode='wb',
3588
suffix=".pickle",
3589
prefix='clients-',
3590
dir=os.path.dirname(stored_state_path),
3591
delete=False) as stored_state:
3592
pickle.dump((clients, client_settings), stored_state,
3593
protocol=2)
3594
tempname = stored_state.name
3595
os.rename(tempname, stored_state_path)
3596
except (IOError, OSError) as e:
3597
if not debug:
3598
try:
3599
os.remove(tempname)
3600
except NameError:
3601
pass
3602
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3603
logger.warning("Could not save persistent state: {}"
3604
.format(os.strerror(e.errno)))
3605
else:
3606
logger.warning("Could not save persistent state:",
3607
exc_info=e)
3608
raise
3609
3610
# Delete all clients, and settings from config
3611
while tcp_server.clients:
3612
name, client = tcp_server.clients.popitem()
3613
if use_dbus:
3614
client.remove_from_connection()
3615
# Don't signal the disabling
3616
client.disable(quiet=True)
3617
# Emit D-Bus signal for removal
3618
if use_dbus:
3619
mandos_dbus_service.client_removed_signal(client)
3620
client_settings.clear()
3621
3622
atexit.register(cleanup)
3623
3624
for client in tcp_server.clients.values():
1657
1658
for client in tcp_server.clients:
3625
1659
if use_dbus:
3626
# Emit D-Bus signal for adding
3627
mandos_dbus_service.client_added_signal(client)
3628
# Need to initiate checking of clients
3629
if client.enabled:
3630
client.init_checker()
3631
1660
# Emit D-Bus signal
1661
mandos_dbus_service.ClientAdded(client.dbus_object_path,
1662
client.GetAll(u""))
1663
client.enable()
1664
3632
1665
tcp_server.enable()
3633
1666
tcp_server.server_activate()
3634
1667
3635
1668
# Find out what port we got
3636
if zeroconf:
3637
service.port = tcp_server.socket.getsockname()[1]
1669
service.port = tcp_server.socket.getsockname()[1]
3638
1670
if use_ipv6:
3639
logger.info("Now listening on address %r, port %d,"
3640
" flowinfo %d, scope_id %d",
3641
*tcp_server.socket.getsockname())
1671
logger.info(u"Now listening on address %r, port %d,"
1672
" flowinfo %d, scope_id %d"
1673
% tcp_server.socket.getsockname())
3642
1674
else: # IPv4
3643
logger.info("Now listening on address %r, port %d",
3644
*tcp_server.socket.getsockname())
3645
3646
# service.interface = tcp_server.socket.getsockname()[3]
3647
1675
logger.info(u"Now listening on address %r, port %d"
1676
% tcp_server.socket.getsockname())
1677
1678
#service.interface = tcp_server.socket.getsockname()[3]
1679
3648
1680
try:
3649
if zeroconf:
3650
# From the Avahi example code
3651
try:
3652
service.activate()
3653
except dbus.exceptions.DBusException as error:
3654
logger.critical("D-Bus Exception", exc_info=error)
3655
cleanup()
3656
sys.exit(1)
3657
# End of Avahi example code
3658
3659
GLib.io_add_watch(
3660
GLib.IOChannel.unix_new(tcp_server.fileno()),
3661
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
3662
lambda *args, **kwargs: (tcp_server.handle_request
3663
(*args[2:], **kwargs) or True))
3664
3665
logger.debug("Starting main loop")
1681
# From the Avahi example code
1682
try:
1683
service.activate()
1684
except dbus.exceptions.DBusException, error:
1685
logger.critical(u"DBusException: %s", error)
1686
sys.exit(1)
1687
# End of Avahi example code
1688
1689
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
1690
lambda *args, **kwargs:
1691
(tcp_server.handle_request
1692
(*args[2:], **kwargs) or True))
1693
1694
logger.debug(u"Starting main loop")
3666
1695
main_loop.run()
3667
except AvahiError as error:
3668
logger.critical("Avahi Error", exc_info=error)
3669
cleanup()
1696
except AvahiError, error:
1697
logger.critical(u"AvahiError: %s", error)
3670
1698
sys.exit(1)
3671
1699
except KeyboardInterrupt:
3672
1700
if debug:
3673
print("", file=sys.stderr)
3674
logger.debug("Server received KeyboardInterrupt")
3675
logger.debug("Server exiting")
3676
# Must run before the D-Bus bus name gets deregistered
3677
cleanup()
3678
3679
3680
def should_only_run_tests():
3681
parser = argparse.ArgumentParser(add_help=False)
3682
parser.add_argument("--check", action='store_true')
3683
args, unknown_args = parser.parse_known_args()
3684
run_tests = args.check
3685
if run_tests:
3686
# Remove --check argument from sys.argv
3687
sys.argv[1:] = unknown_args
3688
return run_tests
3689
3690
# Add all tests from doctest strings
3691
def load_tests(loader, tests, none):
3692
import doctest
3693
tests.addTests(doctest.DocTestSuite())
3694
return tests
1701
print >> sys.stderr
1702
logger.debug(u"Server received KeyboardInterrupt")
1703
logger.debug(u"Server exiting")
3695
1704
3696
1705
if __name__ == '__main__':
3697
try:
3698
if should_only_run_tests():
3699
# Call using ./mandos --check [--verbose]
3700
unittest.main()
3701
else:
3702
main()
3703
finally:
3704
logging.shutdown()
1706
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0