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- Committer: Teddy Hogeborn
- Date: 2010-10-13 06:12:52 UTC
- Revision ID: teddy@fukt.bsnet.se-20101013061252-3a918xedja5caya8
* debian/mandos-client.lintian-overrides: Added plugins.d/plymouth.
- files added:
- initramfs-tools-hook-conf
- files removed:
- bugs.xml
- 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 © 2008-2019 Teddy Hogeborn
15
# Copyright © 2008-2019 Björn Påhlsson
16
#
17
# This file is part of Mandos.
18
#
19
# Mandos is free software: you can redistribute it and/or modify it
20
# under the terms of the GNU General Public License as published by
14
# Copyright © 2008-2010 Teddy Hogeborn
15
# Copyright © 2008-2010 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
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
62
import cPickle as pickle
73
63
import multiprocessing
74
import types
75
import binascii
76
import tempfile
77
import itertools
78
import collections
79
import codecs
80
import unittest
81
64
82
65
import dbus
83
66
import dbus.service
84
import gi
85
from gi.repository import GLib
67
import gobject
68
import avahi
86
69
from dbus.mainloop.glib import DBusGMainLoop
87
70
import ctypes
88
71
import ctypes.util
89
72
import xml.dom.minidom
90
73
import inspect
91
74
92
if sys.version_info.major == 2:
93
__metaclass__ = type
94
str = unicode
95
96
# Show warnings by default
97
if not sys.warnoptions:
98
import warnings
99
warnings.simplefilter("default")
100
101
# Try to find the value of SO_BINDTODEVICE:
102
75
try:
103
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
104
# newer, and it is also the most natural place for it:
105
76
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
106
77
except AttributeError:
107
78
try:
108
# This is where SO_BINDTODEVICE was up to and including Python
109
# 2.6, and also 3.2:
110
79
from IN import SO_BINDTODEVICE
111
80
except ImportError:
112
# In Python 2.7 it seems to have been removed entirely.
113
# Try running the C preprocessor:
114
try:
115
cc = subprocess.Popen(["cc", "--language=c", "-E",
116
"/dev/stdin"],
117
stdin=subprocess.PIPE,
118
stdout=subprocess.PIPE)
119
stdout = cc.communicate(
120
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
121
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
122
except (OSError, ValueError, IndexError):
123
# No value found
124
SO_BINDTODEVICE = None
125
126
if sys.version_info < (3, 2):
127
configparser.Configparser = configparser.SafeConfigParser
128
129
version = "1.8.9"
130
stored_state_file = "clients.pickle"
131
132
logger = logging.getLogger()
133
logging.captureWarnings(True) # Show warnings via the logging system
134
syslogger = None
135
136
try:
137
if_nametoindex = ctypes.cdll.LoadLibrary(
138
ctypes.util.find_library("c")).if_nametoindex
139
except (OSError, AttributeError):
140
141
def if_nametoindex(interface):
142
"Get an interface index the hard way, i.e. using fcntl()"
143
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
144
with contextlib.closing(socket.socket()) as s:
145
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
146
struct.pack(b"16s16x", interface))
147
interface_index = struct.unpack("I", ifreq[16:20])[0]
148
return interface_index
149
150
151
def copy_function(func):
152
"""Make a copy of a function"""
153
if sys.version_info.major == 2:
154
return types.FunctionType(func.func_code,
155
func.func_globals,
156
func.func_name,
157
func.func_defaults,
158
func.func_closure)
159
else:
160
return types.FunctionType(func.__code__,
161
func.__globals__,
162
func.__name__,
163
func.__defaults__,
164
func.__closure__)
165
166
167
def initlogger(debug, level=logging.WARNING):
168
"""init logger and add loglevel"""
169
170
global syslogger
171
syslogger = (logging.handlers.SysLogHandler(
172
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
173
address="/dev/log"))
174
syslogger.setFormatter(logging.Formatter
175
('Mandos [%(process)d]: %(levelname)s:'
176
' %(message)s'))
177
logger.addHandler(syslogger)
178
179
if debug:
180
console = logging.StreamHandler()
181
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
182
' [%(process)d]:'
183
' %(levelname)s:'
184
' %(message)s'))
185
logger.addHandler(console)
186
logger.setLevel(level)
187
188
189
class PGPError(Exception):
190
"""Exception if encryption/decryption fails"""
191
pass
192
193
194
class PGPEngine:
195
"""A simple class for OpenPGP symmetric encryption & decryption"""
196
197
def __init__(self):
198
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
199
self.gpg = "gpg"
200
try:
201
output = subprocess.check_output(["gpgconf"])
202
for line in output.splitlines():
203
name, text, path = line.split(b":")
204
if name == b"gpg":
205
self.gpg = path
206
break
207
except OSError as e:
208
if e.errno != errno.ENOENT:
209
raise
210
self.gnupgargs = ['--batch',
211
'--homedir', self.tempdir,
212
'--force-mdc',
213
'--quiet']
214
# Only GPG version 1 has the --no-use-agent option.
215
if self.gpg == b"gpg" or self.gpg.endswith(b"/gpg"):
216
self.gnupgargs.append("--no-use-agent")
217
218
def __enter__(self):
219
return self
220
221
def __exit__(self, exc_type, exc_value, traceback):
222
self._cleanup()
223
return False
224
225
def __del__(self):
226
self._cleanup()
227
228
def _cleanup(self):
229
if self.tempdir is not None:
230
# Delete contents of tempdir
231
for root, dirs, files in os.walk(self.tempdir,
232
topdown=False):
233
for filename in files:
234
os.remove(os.path.join(root, filename))
235
for dirname in dirs:
236
os.rmdir(os.path.join(root, dirname))
237
# Remove tempdir
238
os.rmdir(self.tempdir)
239
self.tempdir = None
240
241
def password_encode(self, password):
242
# Passphrase can not be empty and can not contain newlines or
243
# NUL bytes. So we prefix it and hex encode it.
244
encoded = b"mandos" + binascii.hexlify(password)
245
if len(encoded) > 2048:
246
# GnuPG can't handle long passwords, so encode differently
247
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
248
.replace(b"\n", b"\\n")
249
.replace(b"\0", b"\\x00"))
250
return encoded
251
252
def encrypt(self, data, password):
253
passphrase = self.password_encode(password)
254
with tempfile.NamedTemporaryFile(
255
dir=self.tempdir) as passfile:
256
passfile.write(passphrase)
257
passfile.flush()
258
proc = subprocess.Popen([self.gpg, '--symmetric',
259
'--passphrase-file',
260
passfile.name]
261
+ self.gnupgargs,
262
stdin=subprocess.PIPE,
263
stdout=subprocess.PIPE,
264
stderr=subprocess.PIPE)
265
ciphertext, err = proc.communicate(input=data)
266
if proc.returncode != 0:
267
raise PGPError(err)
268
return ciphertext
269
270
def decrypt(self, data, password):
271
passphrase = self.password_encode(password)
272
with tempfile.NamedTemporaryFile(
273
dir=self.tempdir) as passfile:
274
passfile.write(passphrase)
275
passfile.flush()
276
proc = subprocess.Popen([self.gpg, '--decrypt',
277
'--passphrase-file',
278
passfile.name]
279
+ self.gnupgargs,
280
stdin=subprocess.PIPE,
281
stdout=subprocess.PIPE,
282
stderr=subprocess.PIPE)
283
decrypted_plaintext, err = proc.communicate(input=data)
284
if proc.returncode != 0:
285
raise PGPError(err)
286
return decrypted_plaintext
287
288
289
# Pretend that we have an Avahi module
290
class avahi:
291
"""This isn't so much a class as it is a module-like namespace."""
292
IF_UNSPEC = -1 # avahi-common/address.h
293
PROTO_UNSPEC = -1 # avahi-common/address.h
294
PROTO_INET = 0 # avahi-common/address.h
295
PROTO_INET6 = 1 # avahi-common/address.h
296
DBUS_NAME = "org.freedesktop.Avahi"
297
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
298
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
299
DBUS_PATH_SERVER = "/"
300
301
@staticmethod
302
def string_array_to_txt_array(t):
303
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
304
for s in t), signature="ay")
305
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
306
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
307
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
308
SERVER_INVALID = 0 # avahi-common/defs.h
309
SERVER_REGISTERING = 1 # avahi-common/defs.h
310
SERVER_RUNNING = 2 # avahi-common/defs.h
311
SERVER_COLLISION = 3 # avahi-common/defs.h
312
SERVER_FAILURE = 4 # avahi-common/defs.h
313
81
SO_BINDTODEVICE = None
82
83
84
version = "1.2.3"
85
86
#logger = logging.getLogger(u'mandos')
87
logger = logging.Logger(u'mandos')
88
syslogger = (logging.handlers.SysLogHandler
89
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
90
address = "/dev/log"))
91
syslogger.setFormatter(logging.Formatter
92
(u'Mandos [%(process)d]: %(levelname)s:'
93
u' %(message)s'))
94
logger.addHandler(syslogger)
95
96
console = logging.StreamHandler()
97
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
98
u' %(levelname)s:'
99
u' %(message)s'))
100
logger.addHandler(console)
314
101
315
102
class AvahiError(Exception):
316
103
def __init__(self, value, *args, **kwargs):
317
104
self.value = value
318
return super(AvahiError, self).__init__(value, *args,
319
**kwargs)
320
105
super(AvahiError, self).__init__(value, *args, **kwargs)
106
def __unicode__(self):
107
return unicode(repr(self.value))
321
108
322
109
class AvahiServiceError(AvahiError):
323
110
pass
324
111
325
326
112
class AvahiGroupError(AvahiError):
327
113
pass
328
114
329
115
330
class AvahiService:
116
class AvahiService(object):
331
117
"""An Avahi (Zeroconf) service.
332
118
333
119
Attributes:
334
120
interface: integer; avahi.IF_UNSPEC or an interface index.
335
121
Used to optionally bind to the specified interface.
336
name: string; Example: 'Mandos'
337
type: string; Example: '_mandos._tcp'.
338
See <https://www.iana.org/assignments/service-names-port-numbers>
122
name: string; Example: u'Mandos'
123
type: string; Example: u'_mandos._tcp'.
124
See <http://www.dns-sd.org/ServiceTypes.html>
339
125
port: integer; what port to announce
340
126
TXT: list of strings; TXT record for the service
341
127
domain: string; Domain to publish on, default to .local if empty.
347
133
server: D-Bus Server
348
134
bus: dbus.SystemBus()
349
135
"""
350
351
def __init__(self,
352
interface=avahi.IF_UNSPEC,
353
name=None,
354
servicetype=None,
355
port=None,
356
TXT=None,
357
domain="",
358
host="",
359
max_renames=32768,
360
protocol=avahi.PROTO_UNSPEC,
361
bus=None):
136
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
137
servicetype = None, port = None, TXT = None,
138
domain = u"", host = u"", max_renames = 32768,
139
protocol = avahi.PROTO_UNSPEC, bus = None):
362
140
self.interface = interface
363
141
self.name = name
364
142
self.type = servicetype
372
150
self.group = None # our entry group
373
151
self.server = None
374
152
self.bus = bus
375
self.entry_group_state_changed_match = None
376
377
def rename(self, remove=True):
153
def rename(self):
378
154
"""Derived from the Avahi example code"""
379
155
if self.rename_count >= self.max_renames:
380
logger.critical("No suitable Zeroconf service name found"
381
" after %i retries, exiting.",
156
logger.critical(u"No suitable Zeroconf service name found"
157
u" after %i retries, exiting.",
382
158
self.rename_count)
383
raise AvahiServiceError("Too many renames")
384
self.name = str(
385
self.server.GetAlternativeServiceName(self.name))
159
raise AvahiServiceError(u"Too many renames")
160
self.name = unicode(self.server.GetAlternativeServiceName(self.name))
161
logger.info(u"Changing Zeroconf service name to %r ...",
162
self.name)
163
syslogger.setFormatter(logging.Formatter
164
(u'Mandos (%s) [%%(process)d]:'
165
u' %%(levelname)s: %%(message)s'
166
% self.name))
167
self.remove()
168
try:
169
self.add()
170
except dbus.exceptions.DBusException, error:
171
logger.critical(u"DBusException: %s", error)
172
self.cleanup()
173
os._exit(1)
386
174
self.rename_count += 1
387
logger.info("Changing Zeroconf service name to %r ...",
388
self.name)
389
if remove:
390
self.remove()
391
try:
392
self.add()
393
except dbus.exceptions.DBusException as error:
394
if (error.get_dbus_name()
395
== "org.freedesktop.Avahi.CollisionError"):
396
logger.info("Local Zeroconf service name collision.")
397
return self.rename(remove=False)
398
else:
399
logger.critical("D-Bus Exception", exc_info=error)
400
self.cleanup()
401
os._exit(1)
402
403
175
def remove(self):
404
176
"""Derived from the Avahi example code"""
405
if self.entry_group_state_changed_match is not None:
406
self.entry_group_state_changed_match.remove()
407
self.entry_group_state_changed_match = None
408
177
if self.group is not None:
409
178
self.group.Reset()
410
411
179
def add(self):
412
180
"""Derived from the Avahi example code"""
413
self.remove()
414
181
if self.group is None:
415
182
self.group = dbus.Interface(
416
183
self.bus.get_object(avahi.DBUS_NAME,
417
184
self.server.EntryGroupNew()),
418
185
avahi.DBUS_INTERFACE_ENTRY_GROUP)
419
self.entry_group_state_changed_match = (
420
self.group.connect_to_signal(
421
'StateChanged', self.entry_group_state_changed))
422
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
186
self.group.connect_to_signal('StateChanged',
187
self
188
.entry_group_state_changed)
189
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
423
190
self.name, self.type)
424
191
self.group.AddService(
425
192
self.interface,
430
197
dbus.UInt16(self.port),
431
198
avahi.string_array_to_txt_array(self.TXT))
432
199
self.group.Commit()
433
434
200
def entry_group_state_changed(self, state, error):
435
201
"""Derived from the Avahi example code"""
436
logger.debug("Avahi entry group state change: %i", state)
437
202
logger.debug(u"Avahi entry group state change: %i", state)
203
438
204
if state == avahi.ENTRY_GROUP_ESTABLISHED:
439
logger.debug("Zeroconf service established.")
205
logger.debug(u"Zeroconf service established.")
440
206
elif state == avahi.ENTRY_GROUP_COLLISION:
441
logger.info("Zeroconf service name collision.")
207
logger.warning(u"Zeroconf service name collision.")
442
208
self.rename()
443
209
elif state == avahi.ENTRY_GROUP_FAILURE:
444
logger.critical("Avahi: Error in group state changed %s",
445
str(error))
446
raise AvahiGroupError("State changed: {!s}".format(error))
447
210
logger.critical(u"Avahi: Error in group state changed %s",
211
unicode(error))
212
raise AvahiGroupError(u"State changed: %s"
213
% unicode(error))
448
214
def cleanup(self):
449
215
"""Derived from the Avahi example code"""
450
216
if self.group is not None:
451
try:
452
self.group.Free()
453
except (dbus.exceptions.UnknownMethodException,
454
dbus.exceptions.DBusException):
455
pass
217
self.group.Free()
456
218
self.group = None
457
self.remove()
458
459
def server_state_changed(self, state, error=None):
219
def server_state_changed(self, state):
460
220
"""Derived from the Avahi example code"""
461
logger.debug("Avahi server state change: %i", state)
462
bad_states = {
463
avahi.SERVER_INVALID: "Zeroconf server invalid",
464
avahi.SERVER_REGISTERING: None,
465
avahi.SERVER_COLLISION: "Zeroconf server name collision",
466
avahi.SERVER_FAILURE: "Zeroconf server failure",
467
}
468
if state in bad_states:
469
if bad_states[state] is not None:
470
if error is None:
471
logger.error(bad_states[state])
472
else:
473
logger.error(bad_states[state] + ": %r", error)
474
self.cleanup()
221
logger.debug(u"Avahi server state change: %i", state)
222
if state == avahi.SERVER_COLLISION:
223
logger.error(u"Zeroconf server name collision")
224
self.remove()
475
225
elif state == avahi.SERVER_RUNNING:
476
try:
477
self.add()
478
except dbus.exceptions.DBusException as error:
479
if (error.get_dbus_name()
480
== "org.freedesktop.Avahi.CollisionError"):
481
logger.info("Local Zeroconf service name"
482
" collision.")
483
return self.rename(remove=False)
484
else:
485
logger.critical("D-Bus Exception", exc_info=error)
486
self.cleanup()
487
os._exit(1)
488
else:
489
if error is None:
490
logger.debug("Unknown state: %r", state)
491
else:
492
logger.debug("Unknown state: %r: %r", state, error)
493
226
self.add()
494
227
def activate(self):
495
228
"""Derived from the Avahi example code"""
496
229
if self.server is None:
497
230
self.server = dbus.Interface(
498
231
self.bus.get_object(avahi.DBUS_NAME,
499
avahi.DBUS_PATH_SERVER,
500
follow_name_owner_changes=True),
232
avahi.DBUS_PATH_SERVER),
501
233
avahi.DBUS_INTERFACE_SERVER)
502
self.server.connect_to_signal("StateChanged",
503
self.server_state_changed)
234
self.server.connect_to_signal(u"StateChanged",
235
self.server_state_changed)
504
236
self.server_state_changed(self.server.GetState())
505
237
506
238
507
class AvahiServiceToSyslog(AvahiService):
508
def rename(self, *args, **kwargs):
509
"""Add the new name to the syslog messages"""
510
ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
511
syslogger.setFormatter(logging.Formatter(
512
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
513
.format(self.name)))
514
return ret
515
516
517
# Pretend that we have a GnuTLS module
518
class gnutls:
519
"""This isn't so much a class as it is a module-like namespace."""
520
521
library = ctypes.util.find_library("gnutls")
522
if library is None:
523
library = ctypes.util.find_library("gnutls-deb0")
524
_library = ctypes.cdll.LoadLibrary(library)
525
del library
526
527
# Unless otherwise indicated, the constants and types below are
528
# all from the gnutls/gnutls.h C header file.
529
530
# Constants
531
E_SUCCESS = 0
532
E_INTERRUPTED = -52
533
E_AGAIN = -28
534
CRT_OPENPGP = 2
535
CRT_RAWPK = 3
536
CLIENT = 2
537
SHUT_RDWR = 0
538
CRD_CERTIFICATE = 1
539
E_NO_CERTIFICATE_FOUND = -49
540
X509_FMT_DER = 0
541
NO_TICKETS = 1<<10
542
ENABLE_RAWPK = 1<<18
543
CTYPE_PEERS = 3
544
KEYID_USE_SHA256 = 1 # gnutls/x509.h
545
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
546
547
# Types
548
class session_int(ctypes.Structure):
549
_fields_ = []
550
session_t = ctypes.POINTER(session_int)
551
552
class certificate_credentials_st(ctypes.Structure):
553
_fields_ = []
554
certificate_credentials_t = ctypes.POINTER(
555
certificate_credentials_st)
556
certificate_type_t = ctypes.c_int
557
558
class datum_t(ctypes.Structure):
559
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
560
('size', ctypes.c_uint)]
561
562
class openpgp_crt_int(ctypes.Structure):
563
_fields_ = []
564
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
565
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
566
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
567
credentials_type_t = ctypes.c_int
568
transport_ptr_t = ctypes.c_void_p
569
close_request_t = ctypes.c_int
570
571
# Exceptions
572
class Error(Exception):
573
def __init__(self, message=None, code=None, args=()):
574
# Default usage is by a message string, but if a return
575
# code is passed, convert it to a string with
576
# gnutls.strerror()
577
self.code = code
578
if message is None and code is not None:
579
message = gnutls.strerror(code)
580
return super(gnutls.Error, self).__init__(
581
message, *args)
582
583
class CertificateSecurityError(Error):
584
pass
585
586
# Classes
587
class Credentials:
588
def __init__(self):
589
self._c_object = gnutls.certificate_credentials_t()
590
gnutls.certificate_allocate_credentials(
591
ctypes.byref(self._c_object))
592
self.type = gnutls.CRD_CERTIFICATE
593
594
def __del__(self):
595
gnutls.certificate_free_credentials(self._c_object)
596
597
class ClientSession:
598
def __init__(self, socket, credentials=None):
599
self._c_object = gnutls.session_t()
600
gnutls_flags = gnutls.CLIENT
601
if gnutls.check_version(b"3.5.6"):
602
gnutls_flags |= gnutls.NO_TICKETS
603
if gnutls.has_rawpk:
604
gnutls_flags |= gnutls.ENABLE_RAWPK
605
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
606
del gnutls_flags
607
gnutls.set_default_priority(self._c_object)
608
gnutls.transport_set_ptr(self._c_object, socket.fileno())
609
gnutls.handshake_set_private_extensions(self._c_object,
610
True)
611
self.socket = socket
612
if credentials is None:
613
credentials = gnutls.Credentials()
614
gnutls.credentials_set(self._c_object, credentials.type,
615
ctypes.cast(credentials._c_object,
616
ctypes.c_void_p))
617
self.credentials = credentials
618
619
def __del__(self):
620
gnutls.deinit(self._c_object)
621
622
def handshake(self):
623
return gnutls.handshake(self._c_object)
624
625
def send(self, data):
626
data = bytes(data)
627
data_len = len(data)
628
while data_len > 0:
629
data_len -= gnutls.record_send(self._c_object,
630
data[-data_len:],
631
data_len)
632
633
def bye(self):
634
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
635
636
# Error handling functions
637
def _error_code(result):
638
"""A function to raise exceptions on errors, suitable
639
for the 'restype' attribute on ctypes functions"""
640
if result >= 0:
641
return result
642
if result == gnutls.E_NO_CERTIFICATE_FOUND:
643
raise gnutls.CertificateSecurityError(code=result)
644
raise gnutls.Error(code=result)
645
646
def _retry_on_error(result, func, arguments):
647
"""A function to retry on some errors, suitable
648
for the 'errcheck' attribute on ctypes functions"""
649
while result < 0:
650
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
651
return _error_code(result)
652
result = func(*arguments)
653
return result
654
655
# Unless otherwise indicated, the function declarations below are
656
# all from the gnutls/gnutls.h C header file.
657
658
# Functions
659
priority_set_direct = _library.gnutls_priority_set_direct
660
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
661
ctypes.POINTER(ctypes.c_char_p)]
662
priority_set_direct.restype = _error_code
663
664
init = _library.gnutls_init
665
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
666
init.restype = _error_code
667
668
set_default_priority = _library.gnutls_set_default_priority
669
set_default_priority.argtypes = [session_t]
670
set_default_priority.restype = _error_code
671
672
record_send = _library.gnutls_record_send
673
record_send.argtypes = [session_t, ctypes.c_void_p,
674
ctypes.c_size_t]
675
record_send.restype = ctypes.c_ssize_t
676
record_send.errcheck = _retry_on_error
677
678
certificate_allocate_credentials = (
679
_library.gnutls_certificate_allocate_credentials)
680
certificate_allocate_credentials.argtypes = [
681
ctypes.POINTER(certificate_credentials_t)]
682
certificate_allocate_credentials.restype = _error_code
683
684
certificate_free_credentials = (
685
_library.gnutls_certificate_free_credentials)
686
certificate_free_credentials.argtypes = [
687
certificate_credentials_t]
688
certificate_free_credentials.restype = None
689
690
handshake_set_private_extensions = (
691
_library.gnutls_handshake_set_private_extensions)
692
handshake_set_private_extensions.argtypes = [session_t,
693
ctypes.c_int]
694
handshake_set_private_extensions.restype = None
695
696
credentials_set = _library.gnutls_credentials_set
697
credentials_set.argtypes = [session_t, credentials_type_t,
698
ctypes.c_void_p]
699
credentials_set.restype = _error_code
700
701
strerror = _library.gnutls_strerror
702
strerror.argtypes = [ctypes.c_int]
703
strerror.restype = ctypes.c_char_p
704
705
certificate_type_get = _library.gnutls_certificate_type_get
706
certificate_type_get.argtypes = [session_t]
707
certificate_type_get.restype = _error_code
708
709
certificate_get_peers = _library.gnutls_certificate_get_peers
710
certificate_get_peers.argtypes = [session_t,
711
ctypes.POINTER(ctypes.c_uint)]
712
certificate_get_peers.restype = ctypes.POINTER(datum_t)
713
714
global_set_log_level = _library.gnutls_global_set_log_level
715
global_set_log_level.argtypes = [ctypes.c_int]
716
global_set_log_level.restype = None
717
718
global_set_log_function = _library.gnutls_global_set_log_function
719
global_set_log_function.argtypes = [log_func]
720
global_set_log_function.restype = None
721
722
deinit = _library.gnutls_deinit
723
deinit.argtypes = [session_t]
724
deinit.restype = None
725
726
handshake = _library.gnutls_handshake
727
handshake.argtypes = [session_t]
728
handshake.restype = _error_code
729
handshake.errcheck = _retry_on_error
730
731
transport_set_ptr = _library.gnutls_transport_set_ptr
732
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
733
transport_set_ptr.restype = None
734
735
bye = _library.gnutls_bye
736
bye.argtypes = [session_t, close_request_t]
737
bye.restype = _error_code
738
bye.errcheck = _retry_on_error
739
740
check_version = _library.gnutls_check_version
741
check_version.argtypes = [ctypes.c_char_p]
742
check_version.restype = ctypes.c_char_p
743
744
_need_version = b"3.3.0"
745
if check_version(_need_version) is None:
746
raise self.Error("Needs GnuTLS {} or later"
747
.format(_need_version))
748
749
_tls_rawpk_version = b"3.6.6"
750
has_rawpk = bool(check_version(_tls_rawpk_version))
751
752
if has_rawpk:
753
# Types
754
class pubkey_st(ctypes.Structure):
755
_fields = []
756
pubkey_t = ctypes.POINTER(pubkey_st)
757
758
x509_crt_fmt_t = ctypes.c_int
759
760
# All the function declarations below are from gnutls/abstract.h
761
pubkey_init = _library.gnutls_pubkey_init
762
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
763
pubkey_init.restype = _error_code
764
765
pubkey_import = _library.gnutls_pubkey_import
766
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
767
x509_crt_fmt_t]
768
pubkey_import.restype = _error_code
769
770
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
771
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
772
ctypes.POINTER(ctypes.c_ubyte),
773
ctypes.POINTER(ctypes.c_size_t)]
774
pubkey_get_key_id.restype = _error_code
775
776
pubkey_deinit = _library.gnutls_pubkey_deinit
777
pubkey_deinit.argtypes = [pubkey_t]
778
pubkey_deinit.restype = None
779
else:
780
# All the function declarations below are from gnutls/openpgp.h
781
782
openpgp_crt_init = _library.gnutls_openpgp_crt_init
783
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
784
openpgp_crt_init.restype = _error_code
785
786
openpgp_crt_import = _library.gnutls_openpgp_crt_import
787
openpgp_crt_import.argtypes = [openpgp_crt_t,
788
ctypes.POINTER(datum_t),
789
openpgp_crt_fmt_t]
790
openpgp_crt_import.restype = _error_code
791
792
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
793
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
794
ctypes.POINTER(ctypes.c_uint)]
795
openpgp_crt_verify_self.restype = _error_code
796
797
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
798
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
799
openpgp_crt_deinit.restype = None
800
801
openpgp_crt_get_fingerprint = (
802
_library.gnutls_openpgp_crt_get_fingerprint)
803
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
804
ctypes.c_void_p,
805
ctypes.POINTER(
806
ctypes.c_size_t)]
807
openpgp_crt_get_fingerprint.restype = _error_code
808
809
if check_version(b"3.6.4"):
810
certificate_type_get2 = _library.gnutls_certificate_type_get2
811
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
812
certificate_type_get2.restype = _error_code
813
814
# Remove non-public functions
815
del _error_code, _retry_on_error
816
817
818
def call_pipe(connection, # : multiprocessing.Connection
819
func, *args, **kwargs):
820
"""This function is meant to be called by multiprocessing.Process
821
822
This function runs func(*args, **kwargs), and writes the resulting
823
return value on the provided multiprocessing.Connection.
824
"""
825
connection.send(func(*args, **kwargs))
826
connection.close()
827
828
829
class Client:
239
class Client(object):
830
240
"""A representation of a client host served by this server.
831
241
832
242
Attributes:
833
approved: bool(); 'None' if not yet approved/disapproved
243
_approved: bool(); 'None' if not yet approved/disapproved
834
244
approval_delay: datetime.timedelta(); Time to wait for approval
835
245
approval_duration: datetime.timedelta(); Duration of one approval
836
checker: multiprocessing.Process(); a running checker process used
837
to see if the client lives. 'None' if no process is
838
running.
839
checker_callback_tag: a GLib event source tag, or None
246
checker: subprocess.Popen(); a running checker process used
247
to see if the client lives.
248
'None' if no process is running.
249
checker_callback_tag: a gobject event source tag, or None
840
250
checker_command: string; External command which is run to check
841
251
if client lives. %() expansions are done at
842
252
runtime with vars(self) as dict, so that for
843
253
instance %(name)s can be used in the command.
844
checker_initiator_tag: a GLib event source tag, or None
254
checker_initiator_tag: a gobject event source tag, or None
845
255
created: datetime.datetime(); (UTC) object creation
846
client_structure: Object describing what attributes a client has
847
and is used for storing the client at exit
848
256
current_checker_command: string; current running checker_command
849
disable_initiator_tag: a GLib event source tag, or None
257
disable_hook: If set, called by disable() as disable_hook(self)
258
disable_initiator_tag: a gobject event source tag, or None
850
259
enabled: bool()
851
260
fingerprint: string (40 or 32 hexadecimal digits); used to
852
uniquely identify an OpenPGP client
853
key_id: string (64 hexadecimal digits); used to uniquely identify
854
a client using raw public keys
261
uniquely identify the client
855
262
host: string; available for use by the checker command
856
263
interval: datetime.timedelta(); How often to start a new checker
857
264
last_approval_request: datetime.datetime(); (UTC) or None
858
265
last_checked_ok: datetime.datetime(); (UTC) or None
859
last_checker_status: integer between 0 and 255 reflecting exit
860
status of last checker. -1 reflects crashed
861
checker, -2 means no checker completed yet.
862
last_checker_signal: The signal which killed the last checker, if
863
last_checker_status is -1
864
last_enabled: datetime.datetime(); (UTC) or None
266
last_enabled: datetime.datetime(); (UTC)
865
267
name: string; from the config file, used in log messages and
866
268
D-Bus identifiers
867
269
secret: bytestring; sent verbatim (over TLS) to client
868
270
timeout: datetime.timedelta(); How long from last_checked_ok
869
271
until this client is disabled
870
extended_timeout: extra long timeout when secret has been sent
871
272
runtime_expansions: Allowed attributes for runtime expansion.
872
expires: datetime.datetime(); time (UTC) when a client will be
873
disabled, or None
874
server_settings: The server_settings dict from main()
875
273
"""
876
877
runtime_expansions = ("approval_delay", "approval_duration",
878
"created", "enabled", "expires", "key_id",
879
"fingerprint", "host", "interval",
880
"last_approval_request", "last_checked_ok",
881
"last_enabled", "name", "timeout")
882
client_defaults = {
883
"timeout": "PT5M",
884
"extended_timeout": "PT15M",
885
"interval": "PT2M",
886
"checker": "fping -q -- %%(host)s",
887
"host": "",
888
"approval_delay": "PT0S",
889
"approval_duration": "PT1S",
890
"approved_by_default": "True",
891
"enabled": "True",
892
}
893
274
275
runtime_expansions = (u"approval_delay", u"approval_duration",
276
u"created", u"enabled", u"fingerprint",
277
u"host", u"interval", u"last_checked_ok",
278
u"last_enabled", u"name", u"timeout")
279
894
280
@staticmethod
895
def config_parser(config):
896
"""Construct a new dict of client settings of this form:
897
{ client_name: {setting_name: value, ...}, ...}
898
with exceptions for any special settings as defined above.
899
NOTE: Must be a pure function. Must return the same result
900
value given the same arguments.
901
"""
902
settings = {}
903
for client_name in config.sections():
904
section = dict(config.items(client_name))
905
client = settings[client_name] = {}
906
907
client["host"] = section["host"]
908
# Reformat values from string types to Python types
909
client["approved_by_default"] = config.getboolean(
910
client_name, "approved_by_default")
911
client["enabled"] = config.getboolean(client_name,
912
"enabled")
913
914
# Uppercase and remove spaces from key_id and fingerprint
915
# for later comparison purposes with return value from the
916
# key_id() and fingerprint() functions
917
client["key_id"] = (section.get("key_id", "").upper()
918
.replace(" ", ""))
919
client["fingerprint"] = (section["fingerprint"].upper()
920
.replace(" ", ""))
921
if "secret" in section:
922
client["secret"] = codecs.decode(section["secret"]
923
.encode("utf-8"),
924
"base64")
925
elif "secfile" in section:
926
with open(os.path.expanduser(os.path.expandvars
927
(section["secfile"])),
928
"rb") as secfile:
929
client["secret"] = secfile.read()
930
else:
931
raise TypeError("No secret or secfile for section {}"
932
.format(section))
933
client["timeout"] = string_to_delta(section["timeout"])
934
client["extended_timeout"] = string_to_delta(
935
section["extended_timeout"])
936
client["interval"] = string_to_delta(section["interval"])
937
client["approval_delay"] = string_to_delta(
938
section["approval_delay"])
939
client["approval_duration"] = string_to_delta(
940
section["approval_duration"])
941
client["checker_command"] = section["checker"]
942
client["last_approval_request"] = None
943
client["last_checked_ok"] = None
944
client["last_checker_status"] = -2
945
946
return settings
947
948
def __init__(self, settings, name=None, server_settings=None):
281
def _timedelta_to_milliseconds(td):
282
"Convert a datetime.timedelta() to milliseconds"
283
return ((td.days * 24 * 60 * 60 * 1000)
284
+ (td.seconds * 1000)
285
+ (td.microseconds // 1000))
286
287
def timeout_milliseconds(self):
288
"Return the 'timeout' attribute in milliseconds"
289
return self._timedelta_to_milliseconds(self.timeout)
290
291
def interval_milliseconds(self):
292
"Return the 'interval' attribute in milliseconds"
293
return self._timedelta_to_milliseconds(self.interval)
294
295
def approval_delay_milliseconds(self):
296
return self._timedelta_to_milliseconds(self.approval_delay)
297
298
def __init__(self, name = None, disable_hook=None, config=None):
299
"""Note: the 'checker' key in 'config' sets the
300
'checker_command' attribute and *not* the 'checker'
301
attribute."""
949
302
self.name = name
950
if server_settings is None:
951
server_settings = {}
952
self.server_settings = server_settings
953
# adding all client settings
954
for setting, value in settings.items():
955
setattr(self, setting, value)
956
957
if self.enabled:
958
if not hasattr(self, "last_enabled"):
959
self.last_enabled = datetime.datetime.utcnow()
960
if not hasattr(self, "expires"):
961
self.expires = (datetime.datetime.utcnow()
962
+ self.timeout)
303
if config is None:
304
config = {}
305
logger.debug(u"Creating client %r", self.name)
306
# Uppercase and remove spaces from fingerprint for later
307
# comparison purposes with return value from the fingerprint()
308
# function
309
self.fingerprint = (config[u"fingerprint"].upper()
310
.replace(u" ", u""))
311
logger.debug(u" Fingerprint: %s", self.fingerprint)
312
if u"secret" in config:
313
self.secret = config[u"secret"].decode(u"base64")
314
elif u"secfile" in config:
315
with open(os.path.expanduser(os.path.expandvars
316
(config[u"secfile"])),
317
"rb") as secfile:
318
self.secret = secfile.read()
963
319
else:
964
self.last_enabled = None
965
self.expires = None
966
967
logger.debug("Creating client %r", self.name)
968
logger.debug(" Key ID: %s", self.key_id)
969
logger.debug(" Fingerprint: %s", self.fingerprint)
970
self.created = settings.get("created",
971
datetime.datetime.utcnow())
972
973
# attributes specific for this server instance
320
raise TypeError(u"No secret or secfile for client %s"
321
% self.name)
322
self.host = config.get(u"host", u"")
323
self.created = datetime.datetime.utcnow()
324
self.enabled = False
325
self.last_approval_request = None
326
self.last_enabled = None
327
self.last_checked_ok = None
328
self.timeout = string_to_delta(config[u"timeout"])
329
self.interval = string_to_delta(config[u"interval"])
330
self.disable_hook = disable_hook
974
331
self.checker = None
975
332
self.checker_initiator_tag = None
976
333
self.disable_initiator_tag = None
977
334
self.checker_callback_tag = None
335
self.checker_command = config[u"checker"]
978
336
self.current_checker_command = None
979
self.approved = None
337
self.last_connect = None
338
self._approved = None
339
self.approved_by_default = config.get(u"approved_by_default",
340
True)
980
341
self.approvals_pending = 0
981
self.changedstate = multiprocessing_manager.Condition(
982
multiprocessing_manager.Lock())
983
self.client_structure = [attr
984
for attr in self.__dict__.keys()
985
if not attr.startswith("_")]
986
self.client_structure.append("client_structure")
987
988
for name, t in inspect.getmembers(
989
type(self), lambda obj: isinstance(obj, property)):
990
if not name.startswith("_"):
991
self.client_structure.append(name)
992
993
# Send notice to process children that client state has changed
342
self.approval_delay = string_to_delta(
343
config[u"approval_delay"])
344
self.approval_duration = string_to_delta(
345
config[u"approval_duration"])
346
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
347
994
348
def send_changedstate(self):
995
with self.changedstate:
996
self.changedstate.notify_all()
997
349
self.changedstate.acquire()
350
self.changedstate.notify_all()
351
self.changedstate.release()
352
998
353
def enable(self):
999
354
"""Start this client's checker and timeout hooks"""
1000
if getattr(self, "enabled", False):
355
if getattr(self, u"enabled", False):
1001
356
# Already enabled
1002
357
return
1003
self.expires = datetime.datetime.utcnow() + self.timeout
1004
self.enabled = True
358
self.send_changedstate()
1005
359
self.last_enabled = datetime.datetime.utcnow()
1006
self.init_checker()
1007
self.send_changedstate()
1008
360
# Schedule a new checker to be started an 'interval' from now,
361
# and every interval from then on.
362
self.checker_initiator_tag = (gobject.timeout_add
363
(self.interval_milliseconds(),
364
self.start_checker))
365
# Schedule a disable() when 'timeout' has passed
366
self.disable_initiator_tag = (gobject.timeout_add
367
(self.timeout_milliseconds(),
368
self.disable))
369
self.enabled = True
370
# Also start a new checker *right now*.
371
self.start_checker()
372
1009
373
def disable(self, quiet=True):
1010
374
"""Disable this client."""
1011
375
if not getattr(self, "enabled", False):
1012
376
return False
1013
377
if not quiet:
1014
logger.info("Disabling client %s", self.name)
1015
if getattr(self, "disable_initiator_tag", None) is not None:
1016
GLib.source_remove(self.disable_initiator_tag)
378
self.send_changedstate()
379
if not quiet:
380
logger.info(u"Disabling client %s", self.name)
381
if getattr(self, u"disable_initiator_tag", False):
382
gobject.source_remove(self.disable_initiator_tag)
1017
383
self.disable_initiator_tag = None
1018
self.expires = None
1019
if getattr(self, "checker_initiator_tag", None) is not None:
1020
GLib.source_remove(self.checker_initiator_tag)
384
if getattr(self, u"checker_initiator_tag", False):
385
gobject.source_remove(self.checker_initiator_tag)
1021
386
self.checker_initiator_tag = None
1022
387
self.stop_checker()
388
if self.disable_hook:
389
self.disable_hook(self)
1023
390
self.enabled = False
1024
if not quiet:
1025
self.send_changedstate()
1026
# Do not run this again if called by a GLib.timeout_add
391
# Do not run this again if called by a gobject.timeout_add
1027
392
return False
1028
393
1029
394
def __del__(self):
395
self.disable_hook = None
1030
396
self.disable()
1031
1032
def init_checker(self):
1033
# Schedule a new checker to be started an 'interval' from now,
1034
# and every interval from then on.
1035
if self.checker_initiator_tag is not None:
1036
GLib.source_remove(self.checker_initiator_tag)
1037
self.checker_initiator_tag = GLib.timeout_add(
1038
int(self.interval.total_seconds() * 1000),
1039
self.start_checker)
1040
# Schedule a disable() when 'timeout' has passed
1041
if self.disable_initiator_tag is not None:
1042
GLib.source_remove(self.disable_initiator_tag)
1043
self.disable_initiator_tag = GLib.timeout_add(
1044
int(self.timeout.total_seconds() * 1000), self.disable)
1045
# Also start a new checker *right now*.
1046
self.start_checker()
1047
1048
def checker_callback(self, source, condition, connection,
1049
command):
397
398
def checker_callback(self, pid, condition, command):
1050
399
"""The checker has completed, so take appropriate actions."""
1051
# Read return code from connection (see call_pipe)
1052
returncode = connection.recv()
1053
connection.close()
1054
if self.checker is not None:
1055
self.checker.join()
1056
400
self.checker_callback_tag = None
1057
401
self.checker = None
1058
1059
if returncode >= 0:
1060
self.last_checker_status = returncode
1061
self.last_checker_signal = None
1062
if self.last_checker_status == 0:
1063
logger.info("Checker for %(name)s succeeded",
402
if os.WIFEXITED(condition):
403
exitstatus = os.WEXITSTATUS(condition)
404
if exitstatus == 0:
405
logger.info(u"Checker for %(name)s succeeded",
1064
406
vars(self))
1065
407
self.checked_ok()
1066
408
else:
1067
logger.info("Checker for %(name)s failed", vars(self))
409
logger.info(u"Checker for %(name)s failed",
410
vars(self))
1068
411
else:
1069
self.last_checker_status = -1
1070
self.last_checker_signal = -returncode
1071
logger.warning("Checker for %(name)s crashed?",
412
logger.warning(u"Checker for %(name)s crashed?",
1072
413
vars(self))
1073
return False
1074
414
1075
415
def checked_ok(self):
1076
"""Assert that the client has been seen, alive and well."""
416
"""Bump up the timeout for this client.
417
418
This should only be called when the client has been seen,
419
alive and well.
420
"""
1077
421
self.last_checked_ok = datetime.datetime.utcnow()
1078
self.last_checker_status = 0
1079
self.last_checker_signal = None
1080
self.bump_timeout()
1081
1082
def bump_timeout(self, timeout=None):
1083
"""Bump up the timeout for this client."""
1084
if timeout is None:
1085
timeout = self.timeout
1086
if self.disable_initiator_tag is not None:
1087
GLib.source_remove(self.disable_initiator_tag)
1088
self.disable_initiator_tag = None
1089
if getattr(self, "enabled", False):
1090
self.disable_initiator_tag = GLib.timeout_add(
1091
int(timeout.total_seconds() * 1000), self.disable)
1092
self.expires = datetime.datetime.utcnow() + timeout
1093
422
gobject.source_remove(self.disable_initiator_tag)
423
self.disable_initiator_tag = (gobject.timeout_add
424
(self.timeout_milliseconds(),
425
self.disable))
426
1094
427
def need_approval(self):
1095
428
self.last_approval_request = datetime.datetime.utcnow()
1096
429
1097
430
def start_checker(self):
1098
431
"""Start a new checker subprocess if one is not running.
1099
432
1100
433
If a checker already exists, leave it running and do
1101
434
nothing."""
1102
435
# The reason for not killing a running checker is that if we
1103
# did that, and if a checker (for some reason) started running
1104
# slowly and taking more than 'interval' time, then the client
1105
# would inevitably timeout, since no checker would get a
1106
# chance to run to completion. If we instead leave running
436
# did that, then if a checker (for some reason) started
437
# running slowly and taking more than 'interval' time, the
438
# client would inevitably timeout, since no checker would get
439
# a chance to run to completion. If we instead leave running
1107
440
# checkers alone, the checker would have to take more time
1108
441
# than 'timeout' for the client to be disabled, which is as it
1109
442
# should be.
1110
1111
if self.checker is not None and not self.checker.is_alive():
1112
logger.warning("Checker was not alive; joining")
1113
self.checker.join()
1114
self.checker = None
443
444
# If a checker exists, make sure it is not a zombie
445
try:
446
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
447
except (AttributeError, OSError), error:
448
if (isinstance(error, OSError)
449
and error.errno != errno.ECHILD):
450
raise error
451
else:
452
if pid:
453
logger.warning(u"Checker was a zombie")
454
gobject.source_remove(self.checker_callback_tag)
455
self.checker_callback(pid, status,
456
self.current_checker_command)
1115
457
# Start a new checker if needed
1116
458
if self.checker is None:
1117
# Escape attributes for the shell
1118
escaped_attrs = {
1119
attr: re.escape(str(getattr(self, attr)))
1120
for attr in self.runtime_expansions}
1121
459
try:
1122
command = self.checker_command % escaped_attrs
1123
except TypeError as error:
1124
logger.error('Could not format string "%s"',
1125
self.checker_command,
1126
exc_info=error)
1127
return True # Try again later
460
# In case checker_command has exactly one % operator
461
command = self.checker_command % self.host
462
except TypeError:
463
# Escape attributes for the shell
464
escaped_attrs = dict(
465
(attr,
466
re.escape(unicode(str(getattr(self, attr, u"")),
467
errors=
468
u'replace')))
469
for attr in
470
self.runtime_expansions)
471
472
try:
473
command = self.checker_command % escaped_attrs
474
except TypeError, error:
475
logger.error(u'Could not format string "%s":'
476
u' %s', self.checker_command, error)
477
return True # Try again later
1128
478
self.current_checker_command = command
1129
logger.info("Starting checker %r for %s", command,
1130
self.name)
1131
# We don't need to redirect stdout and stderr, since
1132
# in normal mode, that is already done by daemon(),
1133
# and in debug mode we don't want to. (Stdin is
1134
# always replaced by /dev/null.)
1135
# The exception is when not debugging but nevertheless
1136
# running in the foreground; use the previously
1137
# created wnull.
1138
popen_args = {"close_fds": True,
1139
"shell": True,
1140
"cwd": "/"}
1141
if (not self.server_settings["debug"]
1142
and self.server_settings["foreground"]):
1143
popen_args.update({"stdout": wnull,
1144
"stderr": wnull})
1145
pipe = multiprocessing.Pipe(duplex=False)
1146
self.checker = multiprocessing.Process(
1147
target=call_pipe,
1148
args=(pipe[1], subprocess.call, command),
1149
kwargs=popen_args)
1150
self.checker.start()
1151
self.checker_callback_tag = GLib.io_add_watch(
1152
GLib.IOChannel.unix_new(pipe[0].fileno()),
1153
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
1154
self.checker_callback, pipe[0], command)
1155
# Re-run this periodically if run by GLib.timeout_add
479
try:
480
logger.info(u"Starting checker %r for %s",
481
command, self.name)
482
# We don't need to redirect stdout and stderr, since
483
# in normal mode, that is already done by daemon(),
484
# and in debug mode we don't want to. (Stdin is
485
# always replaced by /dev/null.)
486
self.checker = subprocess.Popen(command,
487
close_fds=True,
488
shell=True, cwd=u"/")
489
self.checker_callback_tag = (gobject.child_watch_add
490
(self.checker.pid,
491
self.checker_callback,
492
data=command))
493
# The checker may have completed before the gobject
494
# watch was added. Check for this.
495
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
496
if pid:
497
gobject.source_remove(self.checker_callback_tag)
498
self.checker_callback(pid, status, command)
499
except OSError, error:
500
logger.error(u"Failed to start subprocess: %s",
501
error)
502
# Re-run this periodically if run by gobject.timeout_add
1156
503
return True
1157
504
1158
505
def stop_checker(self):
1159
506
"""Force the checker process, if any, to stop."""
1160
507
if self.checker_callback_tag:
1161
GLib.source_remove(self.checker_callback_tag)
508
gobject.source_remove(self.checker_callback_tag)
1162
509
self.checker_callback_tag = None
1163
if getattr(self, "checker", None) is None:
510
if getattr(self, u"checker", None) is None:
1164
511
return
1165
logger.debug("Stopping checker for %(name)s", vars(self))
1166
self.checker.terminate()
512
logger.debug(u"Stopping checker for %(name)s", vars(self))
513
try:
514
os.kill(self.checker.pid, signal.SIGTERM)
515
#time.sleep(0.5)
516
#if self.checker.poll() is None:
517
# os.kill(self.checker.pid, signal.SIGKILL)
518
except OSError, error:
519
if error.errno != errno.ESRCH: # No such process
520
raise
1167
521
self.checker = None
1168
522
1169
1170
def dbus_service_property(dbus_interface,
1171
signature="v",
1172
access="readwrite",
1173
byte_arrays=False):
523
def dbus_service_property(dbus_interface, signature=u"v",
524
access=u"readwrite", byte_arrays=False):
1174
525
"""Decorators for marking methods of a DBusObjectWithProperties to
1175
526
become properties on the D-Bus.
1176
527
1177
528
The decorated method will be called with no arguments by "Get"
1178
529
and with one argument by "Set".
1179
530
1180
531
The parameters, where they are supported, are the same as
1181
532
dbus.service.method, except there is only "signature", since the
1182
533
type from Get() and the type sent to Set() is the same.
1183
534
"""
1184
535
# Encoding deeply encoded byte arrays is not supported yet by the
1185
536
# "Set" method, so we fail early here:
1186
if byte_arrays and signature != "ay":
1187
raise ValueError("Byte arrays not supported for non-'ay'"
1188
" signature {!r}".format(signature))
1189
537
if byte_arrays and signature != u"ay":
538
raise ValueError(u"Byte arrays not supported for non-'ay'"
539
u" signature %r" % signature)
1190
540
def decorator(func):
1191
541
func._dbus_is_property = True
1192
542
func._dbus_interface = dbus_interface
1193
543
func._dbus_signature = signature
1194
544
func._dbus_access = access
1195
545
func._dbus_name = func.__name__
1196
if func._dbus_name.endswith("_dbus_property"):
546
if func._dbus_name.endswith(u"_dbus_property"):
1197
547
func._dbus_name = func._dbus_name[:-14]
1198
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
1199
return func
1200
1201
return decorator
1202
1203
1204
def dbus_interface_annotations(dbus_interface):
1205
"""Decorator for marking functions returning interface annotations
1206
1207
Usage:
1208
1209
@dbus_interface_annotations("org.example.Interface")
1210
def _foo(self): # Function name does not matter
1211
return {"org.freedesktop.DBus.Deprecated": "true",
1212
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1213
"false"}
1214
"""
1215
1216
def decorator(func):
1217
func._dbus_is_interface = True
1218
func._dbus_interface = dbus_interface
1219
func._dbus_name = dbus_interface
1220
return func
1221
1222
return decorator
1223
1224
1225
def dbus_annotations(annotations):
1226
"""Decorator to annotate D-Bus methods, signals or properties
1227
Usage:
1228
1229
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1230
"org.freedesktop.DBus.Property."
1231
"EmitsChangedSignal": "false"})
1232
@dbus_service_property("org.example.Interface", signature="b",
1233
access="r")
1234
def Property_dbus_property(self):
1235
return dbus.Boolean(False)
1236
1237
See also the DBusObjectWithAnnotations class.
1238
"""
1239
1240
def decorator(func):
1241
func._dbus_annotations = annotations
1242
return func
1243
548
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
549
return func
1244
550
return decorator
1245
551
1246
552
1247
553
class DBusPropertyException(dbus.exceptions.DBusException):
1248
554
"""A base class for D-Bus property-related exceptions
1249
555
"""
1250
pass
556
def __unicode__(self):
557
return unicode(str(self))
1251
558
1252
559
1253
560
class DBusPropertyAccessException(DBusPropertyException):
1262
569
pass
1263
570
1264
571
1265
class DBusObjectWithAnnotations(dbus.service.Object):
1266
"""A D-Bus object with annotations.
1267
1268
Classes inheriting from this can use the dbus_annotations
1269
decorator to add annotations to methods or signals.
1270
"""
1271
1272
@staticmethod
1273
def _is_dbus_thing(thing):
1274
"""Returns a function testing if an attribute is a D-Bus thing
1275
1276
If called like _is_dbus_thing("method") it returns a function
1277
suitable for use as predicate to inspect.getmembers().
1278
"""
1279
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1280
False)
1281
1282
def _get_all_dbus_things(self, thing):
1283
"""Returns a generator of (name, attribute) pairs
1284
"""
1285
return ((getattr(athing.__get__(self), "_dbus_name", name),
1286
athing.__get__(self))
1287
for cls in self.__class__.__mro__
1288
for name, athing in
1289
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1290
1291
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1292
out_signature="s",
1293
path_keyword='object_path',
1294
connection_keyword='connection')
1295
def Introspect(self, object_path, connection):
1296
"""Overloading of standard D-Bus method.
1297
1298
Inserts annotation tags on methods and signals.
1299
"""
1300
xmlstring = dbus.service.Object.Introspect(self, object_path,
1301
connection)
1302
try:
1303
document = xml.dom.minidom.parseString(xmlstring)
1304
1305
for if_tag in document.getElementsByTagName("interface"):
1306
# Add annotation tags
1307
for typ in ("method", "signal"):
1308
for tag in if_tag.getElementsByTagName(typ):
1309
annots = dict()
1310
for name, prop in (self.
1311
_get_all_dbus_things(typ)):
1312
if (name == tag.getAttribute("name")
1313
and prop._dbus_interface
1314
== if_tag.getAttribute("name")):
1315
annots.update(getattr(
1316
prop, "_dbus_annotations", {}))
1317
for name, value in annots.items():
1318
ann_tag = document.createElement(
1319
"annotation")
1320
ann_tag.setAttribute("name", name)
1321
ann_tag.setAttribute("value", value)
1322
tag.appendChild(ann_tag)
1323
# Add interface annotation tags
1324
for annotation, value in dict(
1325
itertools.chain.from_iterable(
1326
annotations().items()
1327
for name, annotations
1328
in self._get_all_dbus_things("interface")
1329
if name == if_tag.getAttribute("name")
1330
)).items():
1331
ann_tag = document.createElement("annotation")
1332
ann_tag.setAttribute("name", annotation)
1333
ann_tag.setAttribute("value", value)
1334
if_tag.appendChild(ann_tag)
1335
# Fix argument name for the Introspect method itself
1336
if (if_tag.getAttribute("name")
1337
== dbus.INTROSPECTABLE_IFACE):
1338
for cn in if_tag.getElementsByTagName("method"):
1339
if cn.getAttribute("name") == "Introspect":
1340
for arg in cn.getElementsByTagName("arg"):
1341
if (arg.getAttribute("direction")
1342
== "out"):
1343
arg.setAttribute("name",
1344
"xml_data")
1345
xmlstring = document.toxml("utf-8")
1346
document.unlink()
1347
except (AttributeError, xml.dom.DOMException,
1348
xml.parsers.expat.ExpatError) as error:
1349
logger.error("Failed to override Introspection method",
1350
exc_info=error)
1351
return xmlstring
1352
1353
1354
class DBusObjectWithProperties(DBusObjectWithAnnotations):
572
class DBusObjectWithProperties(dbus.service.Object):
1355
573
"""A D-Bus object with properties.
1356
574
1357
575
Classes inheriting from this can use the dbus_service_property
1358
576
decorator to expose methods as D-Bus properties. It exposes the
1359
577
standard Get(), Set(), and GetAll() methods on the D-Bus.
1360
578
"""
1361
579
580
@staticmethod
581
def _is_dbus_property(obj):
582
return getattr(obj, u"_dbus_is_property", False)
583
584
def _get_all_dbus_properties(self):
585
"""Returns a generator of (name, attribute) pairs
586
"""
587
return ((prop._dbus_name, prop)
588
for name, prop in
589
inspect.getmembers(self, self._is_dbus_property))
590
1362
591
def _get_dbus_property(self, interface_name, property_name):
1363
592
"""Returns a bound method if one exists which is a D-Bus
1364
593
property with the specified name and interface.
1365
594
"""
1366
for cls in self.__class__.__mro__:
1367
for name, value in inspect.getmembers(
1368
cls, self._is_dbus_thing("property")):
1369
if (value._dbus_name == property_name
1370
and value._dbus_interface == interface_name):
1371
return value.__get__(self)
1372
595
for name in (property_name,
596
property_name + u"_dbus_property"):
597
prop = getattr(self, name, None)
598
if (prop is None
599
or not self._is_dbus_property(prop)
600
or prop._dbus_name != property_name
601
or (interface_name and prop._dbus_interface
602
and interface_name != prop._dbus_interface)):
603
continue
604
return prop
1373
605
# No such property
1374
raise DBusPropertyNotFound("{}:{}.{}".format(
1375
self.dbus_object_path, interface_name, property_name))
1376
1377
@classmethod
1378
def _get_all_interface_names(cls):
1379
"""Get a sequence of all interfaces supported by an object"""
1380
return (name for name in set(getattr(getattr(x, attr),
1381
"_dbus_interface", None)
1382
for x in (inspect.getmro(cls))
1383
for attr in dir(x))
1384
if name is not None)
1385
1386
@dbus.service.method(dbus.PROPERTIES_IFACE,
1387
in_signature="ss",
1388
out_signature="v")
606
raise DBusPropertyNotFound(self.dbus_object_path + u":"
607
+ interface_name + u"."
608
+ property_name)
609
610
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
611
out_signature=u"v")
1389
612
def Get(self, interface_name, property_name):
1390
613
"""Standard D-Bus property Get() method, see D-Bus standard.
1391
614
"""
1392
615
prop = self._get_dbus_property(interface_name, property_name)
1393
if prop._dbus_access == "write":
616
if prop._dbus_access == u"write":
1394
617
raise DBusPropertyAccessException(property_name)
1395
618
value = prop()
1396
if not hasattr(value, "variant_level"):
619
if not hasattr(value, u"variant_level"):
1397
620
return value
1398
621
return type(value)(value, variant_level=value.variant_level+1)
1399
1400
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
622
623
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
1401
624
def Set(self, interface_name, property_name, value):
1402
625
"""Standard D-Bus property Set() method, see D-Bus standard.
1403
626
"""
1404
627
prop = self._get_dbus_property(interface_name, property_name)
1405
if prop._dbus_access == "read":
628
if prop._dbus_access == u"read":
1406
629
raise DBusPropertyAccessException(property_name)
1407
if prop._dbus_get_args_options["byte_arrays"]:
630
if prop._dbus_get_args_options[u"byte_arrays"]:
1408
631
# The byte_arrays option is not supported yet on
1409
632
# signatures other than "ay".
1410
if prop._dbus_signature != "ay":
1411
raise ValueError("Byte arrays not supported for non-"
1412
"'ay' signature {!r}"
1413
.format(prop._dbus_signature))
1414
value = dbus.ByteArray(bytes(value))
633
if prop._dbus_signature != u"ay":
634
raise ValueError
635
value = dbus.ByteArray(''.join(unichr(byte)
636
for byte in value))
1415
637
prop(value)
1416
1417
@dbus.service.method(dbus.PROPERTIES_IFACE,
1418
in_signature="s",
1419
out_signature="a{sv}")
638
639
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
640
out_signature=u"a{sv}")
1420
641
def GetAll(self, interface_name):
1421
642
"""Standard D-Bus property GetAll() method, see D-Bus
1422
643
standard.
1423
644
1424
645
Note: Will not include properties with access="write".
1425
646
"""
1426
properties = {}
1427
for name, prop in self._get_all_dbus_things("property"):
647
all = {}
648
for name, prop in self._get_all_dbus_properties():
1428
649
if (interface_name
1429
650
and interface_name != prop._dbus_interface):
1430
651
# Interface non-empty but did not match
1431
652
continue
1432
653
# Ignore write-only properties
1433
if prop._dbus_access == "write":
654
if prop._dbus_access == u"write":
1434
655
continue
1435
656
value = prop()
1436
if not hasattr(value, "variant_level"):
1437
properties[name] = value
657
if not hasattr(value, u"variant_level"):
658
all[name] = value
1438
659
continue
1439
properties[name] = type(value)(
1440
value, variant_level=value.variant_level + 1)
1441
return dbus.Dictionary(properties, signature="sv")
1442
1443
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1444
def PropertiesChanged(self, interface_name, changed_properties,
1445
invalidated_properties):
1446
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1447
standard.
1448
"""
1449
pass
1450
660
all[name] = type(value)(value, variant_level=
661
value.variant_level+1)
662
return dbus.Dictionary(all, signature=u"sv")
663
1451
664
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1452
out_signature="s",
665
out_signature=u"s",
1453
666
path_keyword='object_path',
1454
667
connection_keyword='connection')
1455
668
def Introspect(self, object_path, connection):
1456
"""Overloading of standard D-Bus method.
1457
1458
Inserts property tags and interface annotation tags.
669
"""Standard D-Bus method, overloaded to insert property tags.
1459
670
"""
1460
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1461
object_path,
1462
connection)
671
xmlstring = dbus.service.Object.Introspect(self, object_path,
672
connection)
1463
673
try:
1464
674
document = xml.dom.minidom.parseString(xmlstring)
1465
1466
675
def make_tag(document, name, prop):
1467
e = document.createElement("property")
1468
e.setAttribute("name", name)
1469
e.setAttribute("type", prop._dbus_signature)
1470
e.setAttribute("access", prop._dbus_access)
676
e = document.createElement(u"property")
677
e.setAttribute(u"name", name)
678
e.setAttribute(u"type", prop._dbus_signature)
679
e.setAttribute(u"access", prop._dbus_access)
1471
680
return e
1472
1473
for if_tag in document.getElementsByTagName("interface"):
1474
# Add property tags
681
for if_tag in document.getElementsByTagName(u"interface"):
1475
682
for tag in (make_tag(document, name, prop)
1476
683
for name, prop
1477
in self._get_all_dbus_things("property")
684
in self._get_all_dbus_properties()
1478
685
if prop._dbus_interface
1479
== if_tag.getAttribute("name")):
686
== if_tag.getAttribute(u"name")):
1480
687
if_tag.appendChild(tag)
1481
# Add annotation tags for properties
1482
for tag in if_tag.getElementsByTagName("property"):
1483
annots = dict()
1484
for name, prop in self._get_all_dbus_things(
1485
"property"):
1486
if (name == tag.getAttribute("name")
1487
and prop._dbus_interface
1488
== if_tag.getAttribute("name")):
1489
annots.update(getattr(
1490
prop, "_dbus_annotations", {}))
1491
for name, value in annots.items():
1492
ann_tag = document.createElement(
1493
"annotation")
1494
ann_tag.setAttribute("name", name)
1495
ann_tag.setAttribute("value", value)
1496
tag.appendChild(ann_tag)
1497
688
# Add the names to the return values for the
1498
689
# "org.freedesktop.DBus.Properties" methods
1499
if (if_tag.getAttribute("name")
1500
== "org.freedesktop.DBus.Properties"):
1501
for cn in if_tag.getElementsByTagName("method"):
1502
if cn.getAttribute("name") == "Get":
1503
for arg in cn.getElementsByTagName("arg"):
1504
if (arg.getAttribute("direction")
1505
== "out"):
1506
arg.setAttribute("name", "value")
1507
elif cn.getAttribute("name") == "GetAll":
1508
for arg in cn.getElementsByTagName("arg"):
1509
if (arg.getAttribute("direction")
1510
== "out"):
1511
arg.setAttribute("name", "props")
1512
xmlstring = document.toxml("utf-8")
1513
document.unlink()
1514
except (AttributeError, xml.dom.DOMException,
1515
xml.parsers.expat.ExpatError) as error:
1516
logger.error("Failed to override Introspection method",
1517
exc_info=error)
1518
return xmlstring
1519
1520
1521
try:
1522
dbus.OBJECT_MANAGER_IFACE
1523
except AttributeError:
1524
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1525
1526
1527
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1528
"""A D-Bus object with an ObjectManager.
1529
1530
Classes inheriting from this exposes the standard
1531
GetManagedObjects call and the InterfacesAdded and
1532
InterfacesRemoved signals on the standard
1533
"org.freedesktop.DBus.ObjectManager" interface.
1534
1535
Note: No signals are sent automatically; they must be sent
1536
manually.
1537
"""
1538
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1539
out_signature="a{oa{sa{sv}}}")
1540
def GetManagedObjects(self):
1541
"""This function must be overridden"""
1542
raise NotImplementedError()
1543
1544
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1545
signature="oa{sa{sv}}")
1546
def InterfacesAdded(self, object_path, interfaces_and_properties):
1547
pass
1548
1549
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1550
def InterfacesRemoved(self, object_path, interfaces):
1551
pass
1552
1553
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1554
out_signature="s",
1555
path_keyword='object_path',
1556
connection_keyword='connection')
1557
def Introspect(self, object_path, connection):
1558
"""Overloading of standard D-Bus method.
1559
1560
Override return argument name of GetManagedObjects to be
1561
"objpath_interfaces_and_properties"
1562
"""
1563
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1564
object_path,
1565
connection)
1566
try:
1567
document = xml.dom.minidom.parseString(xmlstring)
1568
1569
for if_tag in document.getElementsByTagName("interface"):
1570
# Fix argument name for the GetManagedObjects method
1571
if (if_tag.getAttribute("name")
1572
== dbus.OBJECT_MANAGER_IFACE):
1573
for cn in if_tag.getElementsByTagName("method"):
1574
if (cn.getAttribute("name")
1575
== "GetManagedObjects"):
1576
for arg in cn.getElementsByTagName("arg"):
1577
if (arg.getAttribute("direction")
1578
== "out"):
1579
arg.setAttribute(
1580
"name",
1581
"objpath_interfaces"
1582
"_and_properties")
1583
xmlstring = document.toxml("utf-8")
1584
document.unlink()
1585
except (AttributeError, xml.dom.DOMException,
1586
xml.parsers.expat.ExpatError) as error:
1587
logger.error("Failed to override Introspection method",
1588
exc_info=error)
1589
return xmlstring
1590
1591
1592
def datetime_to_dbus(dt, variant_level=0):
1593
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1594
if dt is None:
1595
return dbus.String("", variant_level=variant_level)
1596
return dbus.String(dt.isoformat(), variant_level=variant_level)
1597
1598
1599
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1600
"""A class decorator; applied to a subclass of
1601
dbus.service.Object, it will add alternate D-Bus attributes with
1602
interface names according to the "alt_interface_names" mapping.
1603
Usage:
1604
1605
@alternate_dbus_interfaces({"org.example.Interface":
1606
"net.example.AlternateInterface"})
1607
class SampleDBusObject(dbus.service.Object):
1608
@dbus.service.method("org.example.Interface")
1609
def SampleDBusMethod():
1610
pass
1611
1612
The above "SampleDBusMethod" on "SampleDBusObject" will be
1613
reachable via two interfaces: "org.example.Interface" and
1614
"net.example.AlternateInterface", the latter of which will have
1615
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1616
"true", unless "deprecate" is passed with a False value.
1617
1618
This works for methods and signals, and also for D-Bus properties
1619
(from DBusObjectWithProperties) and interfaces (from the
1620
dbus_interface_annotations decorator).
1621
"""
1622
1623
def wrapper(cls):
1624
for orig_interface_name, alt_interface_name in (
1625
alt_interface_names.items()):
1626
attr = {}
1627
interface_names = set()
1628
# Go though all attributes of the class
1629
for attrname, attribute in inspect.getmembers(cls):
1630
# Ignore non-D-Bus attributes, and D-Bus attributes
1631
# with the wrong interface name
1632
if (not hasattr(attribute, "_dbus_interface")
1633
or not attribute._dbus_interface.startswith(
1634
orig_interface_name)):
1635
continue
1636
# Create an alternate D-Bus interface name based on
1637
# the current name
1638
alt_interface = attribute._dbus_interface.replace(
1639
orig_interface_name, alt_interface_name)
1640
interface_names.add(alt_interface)
1641
# Is this a D-Bus signal?
1642
if getattr(attribute, "_dbus_is_signal", False):
1643
# Extract the original non-method undecorated
1644
# function by black magic
1645
if sys.version_info.major == 2:
1646
nonmethod_func = (dict(
1647
zip(attribute.func_code.co_freevars,
1648
attribute.__closure__))
1649
["func"].cell_contents)
1650
else:
1651
nonmethod_func = (dict(
1652
zip(attribute.__code__.co_freevars,
1653
attribute.__closure__))
1654
["func"].cell_contents)
1655
# Create a new, but exactly alike, function
1656
# object, and decorate it to be a new D-Bus signal
1657
# with the alternate D-Bus interface name
1658
new_function = copy_function(nonmethod_func)
1659
new_function = (dbus.service.signal(
1660
alt_interface,
1661
attribute._dbus_signature)(new_function))
1662
# Copy annotations, if any
1663
try:
1664
new_function._dbus_annotations = dict(
1665
attribute._dbus_annotations)
1666
except AttributeError:
1667
pass
1668
1669
# Define a creator of a function to call both the
1670
# original and alternate functions, so both the
1671
# original and alternate signals gets sent when
1672
# the function is called
1673
def fixscope(func1, func2):
1674
"""This function is a scope container to pass
1675
func1 and func2 to the "call_both" function
1676
outside of its arguments"""
1677
1678
@functools.wraps(func2)
1679
def call_both(*args, **kwargs):
1680
"""This function will emit two D-Bus
1681
signals by calling func1 and func2"""
1682
func1(*args, **kwargs)
1683
func2(*args, **kwargs)
1684
# Make wrapper function look like a D-Bus
1685
# signal
1686
for name, attr in inspect.getmembers(func2):
1687
if name.startswith("_dbus_"):
1688
setattr(call_both, name, attr)
1689
1690
return call_both
1691
# Create the "call_both" function and add it to
1692
# the class
1693
attr[attrname] = fixscope(attribute, new_function)
1694
# Is this a D-Bus method?
1695
elif getattr(attribute, "_dbus_is_method", False):
1696
# Create a new, but exactly alike, function
1697
# object. Decorate it to be a new D-Bus method
1698
# with the alternate D-Bus interface name. Add it
1699
# to the class.
1700
attr[attrname] = (
1701
dbus.service.method(
1702
alt_interface,
1703
attribute._dbus_in_signature,
1704
attribute._dbus_out_signature)
1705
(copy_function(attribute)))
1706
# Copy annotations, if any
1707
try:
1708
attr[attrname]._dbus_annotations = dict(
1709
attribute._dbus_annotations)
1710
except AttributeError:
1711
pass
1712
# Is this a D-Bus property?
1713
elif getattr(attribute, "_dbus_is_property", False):
1714
# Create a new, but exactly alike, function
1715
# object, and decorate it to be a new D-Bus
1716
# property with the alternate D-Bus interface
1717
# name. Add it to the class.
1718
attr[attrname] = (dbus_service_property(
1719
alt_interface, attribute._dbus_signature,
1720
attribute._dbus_access,
1721
attribute._dbus_get_args_options
1722
["byte_arrays"])
1723
(copy_function(attribute)))
1724
# Copy annotations, if any
1725
try:
1726
attr[attrname]._dbus_annotations = dict(
1727
attribute._dbus_annotations)
1728
except AttributeError:
1729
pass
1730
# Is this a D-Bus interface?
1731
elif getattr(attribute, "_dbus_is_interface", False):
1732
# Create a new, but exactly alike, function
1733
# object. Decorate it to be a new D-Bus interface
1734
# with the alternate D-Bus interface name. Add it
1735
# to the class.
1736
attr[attrname] = (
1737
dbus_interface_annotations(alt_interface)
1738
(copy_function(attribute)))
1739
if deprecate:
1740
# Deprecate all alternate interfaces
1741
iname = "_AlternateDBusNames_interface_annotation{}"
1742
for interface_name in interface_names:
1743
1744
@dbus_interface_annotations(interface_name)
1745
def func(self):
1746
return {"org.freedesktop.DBus.Deprecated":
1747
"true"}
1748
# Find an unused name
1749
for aname in (iname.format(i)
1750
for i in itertools.count()):
1751
if aname not in attr:
1752
attr[aname] = func
1753
break
1754
if interface_names:
1755
# Replace the class with a new subclass of it with
1756
# methods, signals, etc. as created above.
1757
if sys.version_info.major == 2:
1758
cls = type(b"{}Alternate".format(cls.__name__),
1759
(cls, ), attr)
1760
else:
1761
cls = type("{}Alternate".format(cls.__name__),
1762
(cls, ), attr)
1763
return cls
1764
1765
return wrapper
1766
1767
1768
@alternate_dbus_interfaces({"se.recompile.Mandos":
1769
"se.bsnet.fukt.Mandos"})
690
if (if_tag.getAttribute(u"name")
691
== u"org.freedesktop.DBus.Properties"):
692
for cn in if_tag.getElementsByTagName(u"method"):
693
if cn.getAttribute(u"name") == u"Get":
694
for arg in cn.getElementsByTagName(u"arg"):
695
if (arg.getAttribute(u"direction")
696
== u"out"):
697
arg.setAttribute(u"name", u"value")
698
elif cn.getAttribute(u"name") == u"GetAll":
699
for arg in cn.getElementsByTagName(u"arg"):
700
if (arg.getAttribute(u"direction")
701
== u"out"):
702
arg.setAttribute(u"name", u"props")
703
xmlstring = document.toxml(u"utf-8")
704
document.unlink()
705
except (AttributeError, xml.dom.DOMException,
706
xml.parsers.expat.ExpatError), error:
707
logger.error(u"Failed to override Introspection method",
708
error)
709
return xmlstring
710
711
1770
712
class ClientDBus(Client, DBusObjectWithProperties):
1771
713
"""A Client class using D-Bus
1772
714
1773
715
Attributes:
1774
716
dbus_object_path: dbus.ObjectPath
1775
717
bus: dbus.SystemBus()
1776
718
"""
1777
719
1778
720
runtime_expansions = (Client.runtime_expansions
1779
+ ("dbus_object_path", ))
1780
1781
_interface = "se.recompile.Mandos.Client"
1782
721
+ (u"dbus_object_path",))
722
1783
723
# dbus.service.Object doesn't use super(), so we can't either.
1784
1785
def __init__(self, bus=None, *args, **kwargs):
724
725
def __init__(self, bus = None, *args, **kwargs):
726
self._approvals_pending = 0
1786
727
self.bus = bus
1787
728
Client.__init__(self, *args, **kwargs)
1788
729
# Only now, when this client is initialized, can it show up on
1789
730
# the D-Bus
1790
client_object_name = str(self.name).translate(
1791
{ord("."): ord("_"),
1792
ord("-"): ord("_")})
1793
self.dbus_object_path = dbus.ObjectPath(
1794
"/clients/" + client_object_name)
731
client_object_name = unicode(self.name).translate(
732
{ord(u"."): ord(u"_"),
733
ord(u"-"): ord(u"_")})
734
self.dbus_object_path = (dbus.ObjectPath
735
(u"/clients/" + client_object_name))
1795
736
DBusObjectWithProperties.__init__(self, self.bus,
1796
737
self.dbus_object_path)
1797
1798
def notifychangeproperty(transform_func, dbus_name,
1799
type_func=lambda x: x,
1800
variant_level=1,
1801
invalidate_only=False,
1802
_interface=_interface):
1803
""" Modify a variable so that it's a property which announces
1804
its changes to DBus.
1805
1806
transform_fun: Function that takes a value and a variant_level
1807
and transforms it to a D-Bus type.
1808
dbus_name: D-Bus name of the variable
1809
type_func: Function that transform the value before sending it
1810
to the D-Bus. Default: no transform
1811
variant_level: D-Bus variant level. Default: 1
1812
"""
1813
attrname = "_{}".format(dbus_name)
1814
1815
def setter(self, value):
1816
if hasattr(self, "dbus_object_path"):
1817
if (not hasattr(self, attrname) or
1818
type_func(getattr(self, attrname, None))
1819
!= type_func(value)):
1820
if invalidate_only:
1821
self.PropertiesChanged(
1822
_interface, dbus.Dictionary(),
1823
dbus.Array((dbus_name, )))
1824
else:
1825
dbus_value = transform_func(
1826
type_func(value),
1827
variant_level=variant_level)
1828
self.PropertyChanged(dbus.String(dbus_name),
1829
dbus_value)
1830
self.PropertiesChanged(
1831
_interface,
1832
dbus.Dictionary({dbus.String(dbus_name):
1833
dbus_value}),
1834
dbus.Array())
1835
setattr(self, attrname, value)
1836
1837
return property(lambda self: getattr(self, attrname), setter)
1838
1839
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1840
approvals_pending = notifychangeproperty(dbus.Boolean,
1841
"ApprovalPending",
1842
type_func=bool)
1843
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1844
last_enabled = notifychangeproperty(datetime_to_dbus,
1845
"LastEnabled")
1846
checker = notifychangeproperty(
1847
dbus.Boolean, "CheckerRunning",
1848
type_func=lambda checker: checker is not None)
1849
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1850
"LastCheckedOK")
1851
last_checker_status = notifychangeproperty(dbus.Int16,
1852
"LastCheckerStatus")
1853
last_approval_request = notifychangeproperty(
1854
datetime_to_dbus, "LastApprovalRequest")
1855
approved_by_default = notifychangeproperty(dbus.Boolean,
1856
"ApprovedByDefault")
1857
approval_delay = notifychangeproperty(
1858
dbus.UInt64, "ApprovalDelay",
1859
type_func=lambda td: td.total_seconds() * 1000)
1860
approval_duration = notifychangeproperty(
1861
dbus.UInt64, "ApprovalDuration",
1862
type_func=lambda td: td.total_seconds() * 1000)
1863
host = notifychangeproperty(dbus.String, "Host")
1864
timeout = notifychangeproperty(
1865
dbus.UInt64, "Timeout",
1866
type_func=lambda td: td.total_seconds() * 1000)
1867
extended_timeout = notifychangeproperty(
1868
dbus.UInt64, "ExtendedTimeout",
1869
type_func=lambda td: td.total_seconds() * 1000)
1870
interval = notifychangeproperty(
1871
dbus.UInt64, "Interval",
1872
type_func=lambda td: td.total_seconds() * 1000)
1873
checker_command = notifychangeproperty(dbus.String, "Checker")
1874
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1875
invalidate_only=True)
1876
1877
del notifychangeproperty
1878
738
739
def _get_approvals_pending(self):
740
return self._approvals_pending
741
def _set_approvals_pending(self, value):
742
old_value = self._approvals_pending
743
self._approvals_pending = value
744
bval = bool(value)
745
if (hasattr(self, "dbus_object_path")
746
and bval is not bool(old_value)):
747
dbus_bool = dbus.Boolean(bval, variant_level=1)
748
self.PropertyChanged(dbus.String(u"ApprovalPending"),
749
dbus_bool)
750
751
approvals_pending = property(_get_approvals_pending,
752
_set_approvals_pending)
753
del _get_approvals_pending, _set_approvals_pending
754
755
@staticmethod
756
def _datetime_to_dbus(dt, variant_level=0):
757
"""Convert a UTC datetime.datetime() to a D-Bus type."""
758
return dbus.String(dt.isoformat(),
759
variant_level=variant_level)
760
761
def enable(self):
762
oldstate = getattr(self, u"enabled", False)
763
r = Client.enable(self)
764
if oldstate != self.enabled:
765
# Emit D-Bus signals
766
self.PropertyChanged(dbus.String(u"Enabled"),
767
dbus.Boolean(True, variant_level=1))
768
self.PropertyChanged(
769
dbus.String(u"LastEnabled"),
770
self._datetime_to_dbus(self.last_enabled,
771
variant_level=1))
772
return r
773
774
def disable(self, quiet = False):
775
oldstate = getattr(self, u"enabled", False)
776
r = Client.disable(self, quiet=quiet)
777
if not quiet and oldstate != self.enabled:
778
# Emit D-Bus signal
779
self.PropertyChanged(dbus.String(u"Enabled"),
780
dbus.Boolean(False, variant_level=1))
781
return r
782
1879
783
def __del__(self, *args, **kwargs):
1880
784
try:
1881
785
self.remove_from_connection()
1882
786
except LookupError:
1883
787
pass
1884
if hasattr(DBusObjectWithProperties, "__del__"):
788
if hasattr(DBusObjectWithProperties, u"__del__"):
1885
789
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1886
790
Client.__del__(self, *args, **kwargs)
1887
1888
def checker_callback(self, source, condition,
1889
connection, command, *args, **kwargs):
1890
ret = Client.checker_callback(self, source, condition,
1891
connection, command, *args,
1892
**kwargs)
1893
exitstatus = self.last_checker_status
1894
if exitstatus >= 0:
791
792
def checker_callback(self, pid, condition, command,
793
*args, **kwargs):
794
self.checker_callback_tag = None
795
self.checker = None
796
# Emit D-Bus signal
797
self.PropertyChanged(dbus.String(u"CheckerRunning"),
798
dbus.Boolean(False, variant_level=1))
799
if os.WIFEXITED(condition):
800
exitstatus = os.WEXITSTATUS(condition)
1895
801
# Emit D-Bus signal
1896
802
self.CheckerCompleted(dbus.Int16(exitstatus),
1897
# This is specific to GNU libC
1898
dbus.Int64(exitstatus << 8),
803
dbus.Int64(condition),
1899
804
dbus.String(command))
1900
805
else:
1901
806
# Emit D-Bus signal
1902
807
self.CheckerCompleted(dbus.Int16(-1),
1903
dbus.Int64(
1904
# This is specific to GNU libC
1905
(exitstatus << 8)
1906
| self.last_checker_signal),
808
dbus.Int64(condition),
1907
809
dbus.String(command))
1908
return ret
1909
810
811
return Client.checker_callback(self, pid, condition, command,
812
*args, **kwargs)
813
814
def checked_ok(self, *args, **kwargs):
815
r = Client.checked_ok(self, *args, **kwargs)
816
# Emit D-Bus signal
817
self.PropertyChanged(
818
dbus.String(u"LastCheckedOK"),
819
(self._datetime_to_dbus(self.last_checked_ok,
820
variant_level=1)))
821
return r
822
823
def need_approval(self, *args, **kwargs):
824
r = Client.need_approval(self, *args, **kwargs)
825
# Emit D-Bus signal
826
self.PropertyChanged(
827
dbus.String(u"LastApprovalRequest"),
828
(self._datetime_to_dbus(self.last_approval_request,
829
variant_level=1)))
830
return r
831
1910
832
def start_checker(self, *args, **kwargs):
1911
old_checker_pid = getattr(self.checker, "pid", None)
833
old_checker = self.checker
834
if self.checker is not None:
835
old_checker_pid = self.checker.pid
836
else:
837
old_checker_pid = None
1912
838
r = Client.start_checker(self, *args, **kwargs)
1913
839
# Only if new checker process was started
1914
840
if (self.checker is not None
1915
841
and old_checker_pid != self.checker.pid):
1916
842
# Emit D-Bus signal
1917
843
self.CheckerStarted(self.current_checker_command)
844
self.PropertyChanged(
845
dbus.String(u"CheckerRunning"),
846
dbus.Boolean(True, variant_level=1))
847
return r
848
849
def stop_checker(self, *args, **kwargs):
850
old_checker = getattr(self, u"checker", None)
851
r = Client.stop_checker(self, *args, **kwargs)
852
if (old_checker is not None
853
and getattr(self, u"checker", None) is None):
854
self.PropertyChanged(dbus.String(u"CheckerRunning"),
855
dbus.Boolean(False, variant_level=1))
1918
856
return r
1919
857
1920
858
def _reset_approved(self):
1921
self.approved = None
859
self._approved = None
1922
860
return False
1923
861
1924
862
def approve(self, value=True):
1925
self.approved = value
1926
GLib.timeout_add(int(self.approval_duration.total_seconds()
1927
* 1000), self._reset_approved)
1928
863
self.send_changedstate()
1929
1930
# D-Bus methods, signals & properties
1931
1932
# Interfaces
1933
1934
# Signals
1935
864
self._approved = value
865
gobject.timeout_add(self._timedelta_to_milliseconds
866
(self.approval_duration),
867
self._reset_approved)
868
869
870
## D-Bus methods, signals & properties
871
_interface = u"se.bsnet.fukt.Mandos.Client"
872
873
## Signals
874
1936
875
# CheckerCompleted - signal
1937
@dbus.service.signal(_interface, signature="nxs")
876
@dbus.service.signal(_interface, signature=u"nxs")
1938
877
def CheckerCompleted(self, exitcode, waitstatus, command):
1939
878
"D-Bus signal"
1940
879
pass
1941
880
1942
881
# CheckerStarted - signal
1943
@dbus.service.signal(_interface, signature="s")
882
@dbus.service.signal(_interface, signature=u"s")
1944
883
def CheckerStarted(self, command):
1945
884
"D-Bus signal"
1946
885
pass
1947
886
1948
887
# PropertyChanged - signal
1949
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1950
@dbus.service.signal(_interface, signature="sv")
888
@dbus.service.signal(_interface, signature=u"sv")
1951
889
def PropertyChanged(self, property, value):
1952
890
"D-Bus signal"
1953
891
pass
1954
892
1955
893
# GotSecret - signal
1956
894
@dbus.service.signal(_interface)
1957
895
def GotSecret(self):
1960
898
server to mandos-client
1961
899
"""
1962
900
pass
1963
901
1964
902
# Rejected - signal
1965
@dbus.service.signal(_interface, signature="s")
903
@dbus.service.signal(_interface, signature=u"s")
1966
904
def Rejected(self, reason):
1967
905
"D-Bus signal"
1968
906
pass
1969
907
1970
908
# NeedApproval - signal
1971
@dbus.service.signal(_interface, signature="tb")
909
@dbus.service.signal(_interface, signature=u"tb")
1972
910
def NeedApproval(self, timeout, default):
1973
911
"D-Bus signal"
1974
912
return self.need_approval()
1975
1976
# Methods
1977
913
914
## Methods
915
1978
916
# Approve - method
1979
@dbus.service.method(_interface, in_signature="b")
917
@dbus.service.method(_interface, in_signature=u"b")
1980
918
def Approve(self, value):
1981
919
self.approve(value)
1982
920
1983
921
# CheckedOK - method
1984
922
@dbus.service.method(_interface)
1985
923
def CheckedOK(self):
1986
self.checked_ok()
1987
924
return self.checked_ok()
925
1988
926
# Enable - method
1989
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1990
927
@dbus.service.method(_interface)
1991
928
def Enable(self):
1992
929
"D-Bus method"
1993
930
self.enable()
1994
931
1995
932
# StartChecker - method
1996
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1997
933
@dbus.service.method(_interface)
1998
934
def StartChecker(self):
1999
935
"D-Bus method"
2000
936
self.start_checker()
2001
937
2002
938
# Disable - method
2003
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2004
939
@dbus.service.method(_interface)
2005
940
def Disable(self):
2006
941
"D-Bus method"
2007
942
self.disable()
2008
943
2009
944
# StopChecker - method
2010
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2011
945
@dbus.service.method(_interface)
2012
946
def StopChecker(self):
2013
947
self.stop_checker()
2014
2015
# Properties
2016
948
949
## Properties
950
2017
951
# ApprovalPending - property
2018
@dbus_service_property(_interface, signature="b", access="read")
952
@dbus_service_property(_interface, signature=u"b", access=u"read")
2019
953
def ApprovalPending_dbus_property(self):
2020
954
return dbus.Boolean(bool(self.approvals_pending))
2021
955
2022
956
# ApprovedByDefault - property
2023
@dbus_service_property(_interface,
2024
signature="b",
2025
access="readwrite")
957
@dbus_service_property(_interface, signature=u"b",
958
access=u"readwrite")
2026
959
def ApprovedByDefault_dbus_property(self, value=None):
2027
960
if value is None: # get
2028
961
return dbus.Boolean(self.approved_by_default)
2029
962
self.approved_by_default = bool(value)
2030
963
# Emit D-Bus signal
964
self.PropertyChanged(dbus.String(u"ApprovedByDefault"),
965
dbus.Boolean(value, variant_level=1))
966
2031
967
# ApprovalDelay - property
2032
@dbus_service_property(_interface,
2033
signature="t",
2034
access="readwrite")
968
@dbus_service_property(_interface, signature=u"t",
969
access=u"readwrite")
2035
970
def ApprovalDelay_dbus_property(self, value=None):
2036
971
if value is None: # get
2037
return dbus.UInt64(self.approval_delay.total_seconds()
2038
* 1000)
972
return dbus.UInt64(self.approval_delay_milliseconds())
2039
973
self.approval_delay = datetime.timedelta(0, 0, 0, value)
2040
974
# Emit D-Bus signal
975
self.PropertyChanged(dbus.String(u"ApprovalDelay"),
976
dbus.UInt64(value, variant_level=1))
977
2041
978
# ApprovalDuration - property
2042
@dbus_service_property(_interface,
2043
signature="t",
2044
access="readwrite")
979
@dbus_service_property(_interface, signature=u"t",
980
access=u"readwrite")
2045
981
def ApprovalDuration_dbus_property(self, value=None):
2046
982
if value is None: # get
2047
return dbus.UInt64(self.approval_duration.total_seconds()
2048
* 1000)
983
return dbus.UInt64(self._timedelta_to_milliseconds(
984
self.approval_duration))
2049
985
self.approval_duration = datetime.timedelta(0, 0, 0, value)
2050
986
# Emit D-Bus signal
987
self.PropertyChanged(dbus.String(u"ApprovalDuration"),
988
dbus.UInt64(value, variant_level=1))
989
2051
990
# Name - property
2052
@dbus_annotations(
2053
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2054
@dbus_service_property(_interface, signature="s", access="read")
991
@dbus_service_property(_interface, signature=u"s", access=u"read")
2055
992
def Name_dbus_property(self):
2056
993
return dbus.String(self.name)
2057
2058
# KeyID - property
2059
@dbus_annotations(
2060
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2061
@dbus_service_property(_interface, signature="s", access="read")
2062
def KeyID_dbus_property(self):
2063
return dbus.String(self.key_id)
2064
994
2065
995
# Fingerprint - property
2066
@dbus_annotations(
2067
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2068
@dbus_service_property(_interface, signature="s", access="read")
996
@dbus_service_property(_interface, signature=u"s", access=u"read")
2069
997
def Fingerprint_dbus_property(self):
2070
998
return dbus.String(self.fingerprint)
2071
999
2072
1000
# Host - property
2073
@dbus_service_property(_interface,
2074
signature="s",
2075
access="readwrite")
1001
@dbus_service_property(_interface, signature=u"s",
1002
access=u"readwrite")
2076
1003
def Host_dbus_property(self, value=None):
2077
1004
if value is None: # get
2078
1005
return dbus.String(self.host)
2079
self.host = str(value)
2080
1006
self.host = value
1007
# Emit D-Bus signal
1008
self.PropertyChanged(dbus.String(u"Host"),
1009
dbus.String(value, variant_level=1))
1010
2081
1011
# Created - property
2082
@dbus_annotations(
2083
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2084
@dbus_service_property(_interface, signature="s", access="read")
1012
@dbus_service_property(_interface, signature=u"s", access=u"read")
2085
1013
def Created_dbus_property(self):
2086
return datetime_to_dbus(self.created)
2087
1014
return dbus.String(self._datetime_to_dbus(self.created))
1015
2088
1016
# LastEnabled - property
2089
@dbus_service_property(_interface, signature="s", access="read")
1017
@dbus_service_property(_interface, signature=u"s", access=u"read")
2090
1018
def LastEnabled_dbus_property(self):
2091
return datetime_to_dbus(self.last_enabled)
2092
1019
if self.last_enabled is None:
1020
return dbus.String(u"")
1021
return dbus.String(self._datetime_to_dbus(self.last_enabled))
1022
2093
1023
# Enabled - property
2094
@dbus_service_property(_interface,
2095
signature="b",
2096
access="readwrite")
1024
@dbus_service_property(_interface, signature=u"b",
1025
access=u"readwrite")
2097
1026
def Enabled_dbus_property(self, value=None):
2098
1027
if value is None: # get
2099
1028
return dbus.Boolean(self.enabled)
2101
1030
self.enable()
2102
1031
else:
2103
1032
self.disable()
2104
1033
2105
1034
# LastCheckedOK - property
2106
@dbus_service_property(_interface,
2107
signature="s",
2108
access="readwrite")
1035
@dbus_service_property(_interface, signature=u"s",
1036
access=u"readwrite")
2109
1037
def LastCheckedOK_dbus_property(self, value=None):
2110
1038
if value is not None:
2111
1039
self.checked_ok()
2112
1040
return
2113
return datetime_to_dbus(self.last_checked_ok)
2114
2115
# LastCheckerStatus - property
2116
@dbus_service_property(_interface, signature="n", access="read")
2117
def LastCheckerStatus_dbus_property(self):
2118
return dbus.Int16(self.last_checker_status)
2119
2120
# Expires - property
2121
@dbus_service_property(_interface, signature="s", access="read")
2122
def Expires_dbus_property(self):
2123
return datetime_to_dbus(self.expires)
2124
1041
if self.last_checked_ok is None:
1042
return dbus.String(u"")
1043
return dbus.String(self._datetime_to_dbus(self
1044
.last_checked_ok))
1045
2125
1046
# LastApprovalRequest - property
2126
@dbus_service_property(_interface, signature="s", access="read")
1047
@dbus_service_property(_interface, signature=u"s", access=u"read")
2127
1048
def LastApprovalRequest_dbus_property(self):
2128
return datetime_to_dbus(self.last_approval_request)
2129
1049
if self.last_approval_request is None:
1050
return dbus.String(u"")
1051
return dbus.String(self.
1052
_datetime_to_dbus(self
1053
.last_approval_request))
1054
2130
1055
# Timeout - property
2131
@dbus_service_property(_interface,
2132
signature="t",
2133
access="readwrite")
1056
@dbus_service_property(_interface, signature=u"t",
1057
access=u"readwrite")
2134
1058
def Timeout_dbus_property(self, value=None):
2135
1059
if value is None: # get
2136
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2137
old_timeout = self.timeout
1060
return dbus.UInt64(self.timeout_milliseconds())
2138
1061
self.timeout = datetime.timedelta(0, 0, 0, value)
2139
# Reschedule disabling
2140
if self.enabled:
2141
now = datetime.datetime.utcnow()
2142
self.expires += self.timeout - old_timeout
2143
if self.expires <= now:
2144
# The timeout has passed
2145
self.disable()
2146
else:
2147
if (getattr(self, "disable_initiator_tag", None)
2148
is None):
2149
return
2150
GLib.source_remove(self.disable_initiator_tag)
2151
self.disable_initiator_tag = GLib.timeout_add(
2152
int((self.expires - now).total_seconds() * 1000),
2153
self.disable)
2154
2155
# ExtendedTimeout - property
2156
@dbus_service_property(_interface,
2157
signature="t",
2158
access="readwrite")
2159
def ExtendedTimeout_dbus_property(self, value=None):
2160
if value is None: # get
2161
return dbus.UInt64(self.extended_timeout.total_seconds()
2162
* 1000)
2163
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2164
1062
# Emit D-Bus signal
1063
self.PropertyChanged(dbus.String(u"Timeout"),
1064
dbus.UInt64(value, variant_level=1))
1065
if getattr(self, u"disable_initiator_tag", None) is None:
1066
return
1067
# Reschedule timeout
1068
gobject.source_remove(self.disable_initiator_tag)
1069
self.disable_initiator_tag = None
1070
time_to_die = (self.
1071
_timedelta_to_milliseconds((self
1072
.last_checked_ok
1073
+ self.timeout)
1074
- datetime.datetime
1075
.utcnow()))
1076
if time_to_die <= 0:
1077
# The timeout has passed
1078
self.disable()
1079
else:
1080
self.disable_initiator_tag = (gobject.timeout_add
1081
(time_to_die, self.disable))
1082
2165
1083
# Interval - property
2166
@dbus_service_property(_interface,
2167
signature="t",
2168
access="readwrite")
1084
@dbus_service_property(_interface, signature=u"t",
1085
access=u"readwrite")
2169
1086
def Interval_dbus_property(self, value=None):
2170
1087
if value is None: # get
2171
return dbus.UInt64(self.interval.total_seconds() * 1000)
1088
return dbus.UInt64(self.interval_milliseconds())
2172
1089
self.interval = datetime.timedelta(0, 0, 0, value)
2173
if getattr(self, "checker_initiator_tag", None) is None:
1090
# Emit D-Bus signal
1091
self.PropertyChanged(dbus.String(u"Interval"),
1092
dbus.UInt64(value, variant_level=1))
1093
if getattr(self, u"checker_initiator_tag", None) is None:
2174
1094
return
2175
if self.enabled:
2176
# Reschedule checker run
2177
GLib.source_remove(self.checker_initiator_tag)
2178
self.checker_initiator_tag = GLib.timeout_add(
2179
value, self.start_checker)
2180
self.start_checker() # Start one now, too
1095
# Reschedule checker run
1096
gobject.source_remove(self.checker_initiator_tag)
1097
self.checker_initiator_tag = (gobject.timeout_add
1098
(value, self.start_checker))
1099
self.start_checker() # Start one now, too
2181
1100
2182
1101
# Checker - property
2183
@dbus_service_property(_interface,
2184
signature="s",
2185
access="readwrite")
1102
@dbus_service_property(_interface, signature=u"s",
1103
access=u"readwrite")
2186
1104
def Checker_dbus_property(self, value=None):
2187
1105
if value is None: # get
2188
1106
return dbus.String(self.checker_command)
2189
self.checker_command = str(value)
2190
1107
self.checker_command = value
1108
# Emit D-Bus signal
1109
self.PropertyChanged(dbus.String(u"Checker"),
1110
dbus.String(self.checker_command,
1111
variant_level=1))
1112
2191
1113
# CheckerRunning - property
2192
@dbus_service_property(_interface,
2193
signature="b",
2194
access="readwrite")
1114
@dbus_service_property(_interface, signature=u"b",
1115
access=u"readwrite")
2195
1116
def CheckerRunning_dbus_property(self, value=None):
2196
1117
if value is None: # get
2197
1118
return dbus.Boolean(self.checker is not None)
2199
1120
self.start_checker()
2200
1121
else:
2201
1122
self.stop_checker()
2202
1123
2203
1124
# ObjectPath - property
2204
@dbus_annotations(
2205
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2206
"org.freedesktop.DBus.Deprecated": "true"})
2207
@dbus_service_property(_interface, signature="o", access="read")
1125
@dbus_service_property(_interface, signature=u"o", access=u"read")
2208
1126
def ObjectPath_dbus_property(self):
2209
return self.dbus_object_path # is already a dbus.ObjectPath
2210
1127
return self.dbus_object_path # is already a dbus.ObjectPath
1128
2211
1129
# Secret = property
2212
@dbus_annotations(
2213
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2214
"invalidates"})
2215
@dbus_service_property(_interface,
2216
signature="ay",
2217
access="write",
2218
byte_arrays=True)
1130
@dbus_service_property(_interface, signature=u"ay",
1131
access=u"write", byte_arrays=True)
2219
1132
def Secret_dbus_property(self, value):
2220
self.secret = bytes(value)
2221
1133
self.secret = str(value)
1134
2222
1135
del _interface
2223
1136
2224
1137
2225
class ProxyClient:
2226
def __init__(self, child_pipe, key_id, fpr, address):
1138
class ProxyClient(object):
1139
def __init__(self, child_pipe, fpr, address):
2227
1140
self._pipe = child_pipe
2228
self._pipe.send(('init', key_id, fpr, address))
1141
self._pipe.send(('init', fpr, address))
2229
1142
if not self._pipe.recv():
2230
raise KeyError(key_id or fpr)
1143
raise KeyError()
2231
1144
2232
1145
def __getattribute__(self, name):
2233
if name == '_pipe':
1146
if(name == '_pipe'):
2234
1147
return super(ProxyClient, self).__getattribute__(name)
2235
1148
self._pipe.send(('getattr', name))
2236
1149
data = self._pipe.recv()
2237
1150
if data[0] == 'data':
2238
1151
return data[1]
2239
1152
if data[0] == 'function':
2240
2241
1153
def func(*args, **kwargs):
2242
1154
self._pipe.send(('funcall', name, args, kwargs))
2243
1155
return self._pipe.recv()[1]
2244
2245
1156
return func
2246
1157
2247
1158
def __setattr__(self, name, value):
2248
if name == '_pipe':
1159
if(name == '_pipe'):
2249
1160
return super(ProxyClient, self).__setattr__(name, value)
2250
1161
self._pipe.send(('setattr', name, value))
2251
1162
2252
1163
2253
1164
class ClientHandler(socketserver.BaseRequestHandler, object):
2254
1165
"""A class to handle client connections.
2255
1166
2256
1167
Instantiated once for each connection to handle it.
2257
1168
Note: This will run in its own forked process."""
2258
1169
2259
1170
def handle(self):
2260
1171
with contextlib.closing(self.server.child_pipe) as child_pipe:
2261
logger.info("TCP connection from: %s",
2262
str(self.client_address))
2263
logger.debug("Pipe FD: %d",
1172
logger.info(u"TCP connection from: %s",
1173
unicode(self.client_address))
1174
logger.debug(u"Pipe FD: %d",
2264
1175
self.server.child_pipe.fileno())
2265
1176
2266
session = gnutls.ClientSession(self.request)
2267
2268
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2269
# "+AES-256-CBC", "+SHA1",
2270
# "+COMP-NULL", "+CTYPE-OPENPGP",
2271
# "+DHE-DSS"))
1177
session = (gnutls.connection
1178
.ClientSession(self.request,
1179
gnutls.connection
1180
.X509Credentials()))
1181
1182
# Note: gnutls.connection.X509Credentials is really a
1183
# generic GnuTLS certificate credentials object so long as
1184
# no X.509 keys are added to it. Therefore, we can use it
1185
# here despite using OpenPGP certificates.
1186
1187
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1188
# u"+AES-256-CBC", u"+SHA1",
1189
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1190
# u"+DHE-DSS"))
2272
1191
# Use a fallback default, since this MUST be set.
2273
1192
priority = self.server.gnutls_priority
2274
1193
if priority is None:
2275
priority = "NORMAL"
2276
gnutls.priority_set_direct(session._c_object,
2277
priority.encode("utf-8"),
2278
None)
1194
priority = u"NORMAL"
1195
(gnutls.library.functions
1196
.gnutls_priority_set_direct(session._c_object,
1197
priority, None))
2279
1198
2280
1199
# Start communication using the Mandos protocol
2281
1200
# Get protocol number
2282
1201
line = self.request.makefile().readline()
2283
logger.debug("Protocol version: %r", line)
1202
logger.debug(u"Protocol version: %r", line)
2284
1203
try:
2285
1204
if int(line.strip().split()[0]) > 1:
2286
raise RuntimeError(line)
2287
except (ValueError, IndexError, RuntimeError) as error:
2288
logger.error("Unknown protocol version: %s", error)
1205
raise RuntimeError
1206
except (ValueError, IndexError, RuntimeError), error:
1207
logger.error(u"Unknown protocol version: %s", error)
2289
1208
return
2290
1209
2291
1210
# Start GnuTLS connection
2292
1211
try:
2293
1212
session.handshake()
2294
except gnutls.Error as error:
2295
logger.warning("Handshake failed: %s", error)
1213
except gnutls.errors.GNUTLSError, error:
1214
logger.warning(u"Handshake failed: %s", error)
2296
1215
# Do not run session.bye() here: the session is not
2297
1216
# established. Just abandon the request.
2298
1217
return
2299
logger.debug("Handshake succeeded")
1218
logger.debug(u"Handshake succeeded")
2300
1219
2301
1220
approval_required = False
2302
1221
try:
2303
if gnutls.has_rawpk:
2304
fpr = b""
2305
try:
2306
key_id = self.key_id(
2307
self.peer_certificate(session))
2308
except (TypeError, gnutls.Error) as error:
2309
logger.warning("Bad certificate: %s", error)
2310
return
2311
logger.debug("Key ID: %s", key_id)
2312
2313
else:
2314
key_id = b""
2315
try:
2316
fpr = self.fingerprint(
2317
self.peer_certificate(session))
2318
except (TypeError, gnutls.Error) as error:
2319
logger.warning("Bad certificate: %s", error)
2320
return
2321
logger.debug("Fingerprint: %s", fpr)
2322
2323
try:
2324
client = ProxyClient(child_pipe, key_id, fpr,
1222
try:
1223
fpr = self.fingerprint(self.peer_certificate
1224
(session))
1225
except (TypeError, gnutls.errors.GNUTLSError), error:
1226
logger.warning(u"Bad certificate: %s", error)
1227
return
1228
logger.debug(u"Fingerprint: %s", fpr)
1229
1230
try:
1231
client = ProxyClient(child_pipe, fpr,
2325
1232
self.client_address)
2326
1233
except KeyError:
2327
1234
return
2328
1235
2329
1236
if client.approval_delay:
2330
1237
delay = client.approval_delay
2331
1238
client.approvals_pending += 1
2332
1239
approval_required = True
2333
1240
2334
1241
while True:
2335
1242
if not client.enabled:
2336
logger.info("Client %s is disabled",
2337
client.name)
1243
logger.warning(u"Client %s is disabled",
1244
client.name)
2338
1245
if self.server.use_dbus:
2339
1246
# Emit D-Bus signal
2340
client.Rejected("Disabled")
1247
client.Rejected("Disabled")
2341
1248
return
2342
2343
if client.approved or not client.approval_delay:
2344
# We are approved or approval is disabled
1249
1250
if client._approved or not client.approval_delay:
1251
#We are approved or approval is disabled
2345
1252
break
2346
elif client.approved is None:
2347
logger.info("Client %s needs approval",
1253
elif client._approved is None:
1254
logger.info(u"Client %s needs approval",
2348
1255
client.name)
2349
1256
if self.server.use_dbus:
2350
1257
# Emit D-Bus signal
2351
1258
client.NeedApproval(
2352
client.approval_delay.total_seconds()
2353
* 1000, client.approved_by_default)
1259
client.approval_delay_milliseconds(),
1260
client.approved_by_default)
2354
1261
else:
2355
logger.warning("Client %s was not approved",
1262
logger.warning(u"Client %s was not approved",
2356
1263
client.name)
2357
1264
if self.server.use_dbus:
2358
1265
# Emit D-Bus signal
2359
1266
client.Rejected("Denied")
2360
1267
return
2361
2362
# wait until timeout or approved
1268
1269
#wait until timeout or approved
1270
#x = float(client._timedelta_to_milliseconds(delay))
2363
1271
time = datetime.datetime.now()
2364
1272
client.changedstate.acquire()
2365
client.changedstate.wait(delay.total_seconds())
1273
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
2366
1274
client.changedstate.release()
2367
1275
time2 = datetime.datetime.now()
2368
1276
if (time2 - time) >= delay:
2378
1286
break
2379
1287
else:
2380
1288
delay -= time2 - time
2381
2382
try:
2383
session.send(client.secret)
2384
except gnutls.Error as error:
2385
logger.warning("gnutls send failed",
2386
exc_info=error)
2387
return
2388
2389
logger.info("Sending secret to %s", client.name)
2390
# bump the timeout using extended_timeout
2391
client.bump_timeout(client.extended_timeout)
1289
1290
sent_size = 0
1291
while sent_size < len(client.secret):
1292
try:
1293
sent = session.send(client.secret[sent_size:])
1294
except (gnutls.errors.GNUTLSError), error:
1295
logger.warning("gnutls send failed")
1296
return
1297
logger.debug(u"Sent: %d, remaining: %d",
1298
sent, len(client.secret)
1299
- (sent_size + sent))
1300
sent_size += sent
1301
1302
logger.info(u"Sending secret to %s", client.name)
1303
# bump the timeout as if seen
1304
client.checked_ok()
2392
1305
if self.server.use_dbus:
2393
1306
# Emit D-Bus signal
2394
1307
client.GotSecret()
2395
1308
2396
1309
finally:
2397
1310
if approval_required:
2398
1311
client.approvals_pending -= 1
2399
1312
try:
2400
1313
session.bye()
2401
except gnutls.Error as error:
2402
logger.warning("GnuTLS bye failed",
2403
exc_info=error)
2404
1314
except (gnutls.errors.GNUTLSError), error:
1315
logger.warning("GnuTLS bye failed")
1316
2405
1317
@staticmethod
2406
1318
def peer_certificate(session):
2407
"Return the peer's certificate as a bytestring"
2408
try:
2409
cert_type = gnutls.certificate_type_get2(session._c_object,
2410
gnutls.CTYPE_PEERS)
2411
except AttributeError:
2412
cert_type = gnutls.certificate_type_get(session._c_object)
2413
if gnutls.has_rawpk:
2414
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2415
else:
2416
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2417
# If not a valid certificate type...
2418
if cert_type not in valid_cert_types:
2419
logger.info("Cert type %r not in %r", cert_type,
2420
valid_cert_types)
2421
# ...return invalid data
2422
return b""
1319
"Return the peer's OpenPGP certificate as a bytestring"
1320
# If not an OpenPGP certificate...
1321
if (gnutls.library.functions
1322
.gnutls_certificate_type_get(session._c_object)
1323
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1324
# ...do the normal thing
1325
return session.peer_certificate
2423
1326
list_size = ctypes.c_uint(1)
2424
cert_list = (gnutls.certificate_get_peers
1327
cert_list = (gnutls.library.functions
1328
.gnutls_certificate_get_peers
2425
1329
(session._c_object, ctypes.byref(list_size)))
2426
1330
if not bool(cert_list) and list_size.value != 0:
2427
raise gnutls.Error("error getting peer certificate")
1331
raise gnutls.errors.GNUTLSError(u"error getting peer"
1332
u" certificate")
2428
1333
if list_size.value == 0:
2429
1334
return None
2430
1335
cert = cert_list[0]
2431
1336
return ctypes.string_at(cert.data, cert.size)
2432
2433
@staticmethod
2434
def key_id(certificate):
2435
"Convert a certificate bytestring to a hexdigit key ID"
2436
# New GnuTLS "datum" with the public key
2437
datum = gnutls.datum_t(
2438
ctypes.cast(ctypes.c_char_p(certificate),
2439
ctypes.POINTER(ctypes.c_ubyte)),
2440
ctypes.c_uint(len(certificate)))
2441
# XXX all these need to be created in the gnutls "module"
2442
# New empty GnuTLS certificate
2443
pubkey = gnutls.pubkey_t()
2444
gnutls.pubkey_init(ctypes.byref(pubkey))
2445
# Import the raw public key into the certificate
2446
gnutls.pubkey_import(pubkey,
2447
ctypes.byref(datum),
2448
gnutls.X509_FMT_DER)
2449
# New buffer for the key ID
2450
buf = ctypes.create_string_buffer(32)
2451
buf_len = ctypes.c_size_t(len(buf))
2452
# Get the key ID from the raw public key into the buffer
2453
gnutls.pubkey_get_key_id(pubkey,
2454
gnutls.KEYID_USE_SHA256,
2455
ctypes.cast(ctypes.byref(buf),
2456
ctypes.POINTER(ctypes.c_ubyte)),
2457
ctypes.byref(buf_len))
2458
# Deinit the certificate
2459
gnutls.pubkey_deinit(pubkey)
2460
2461
# Convert the buffer to a Python bytestring
2462
key_id = ctypes.string_at(buf, buf_len.value)
2463
# Convert the bytestring to hexadecimal notation
2464
hex_key_id = binascii.hexlify(key_id).upper()
2465
return hex_key_id
2466
1337
2467
1338
@staticmethod
2468
1339
def fingerprint(openpgp):
2469
1340
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2470
1341
# New GnuTLS "datum" with the OpenPGP public key
2471
datum = gnutls.datum_t(
2472
ctypes.cast(ctypes.c_char_p(openpgp),
2473
ctypes.POINTER(ctypes.c_ubyte)),
2474
ctypes.c_uint(len(openpgp)))
1342
datum = (gnutls.library.types
1343
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1344
ctypes.POINTER
1345
(ctypes.c_ubyte)),
1346
ctypes.c_uint(len(openpgp))))
2475
1347
# New empty GnuTLS certificate
2476
crt = gnutls.openpgp_crt_t()
2477
gnutls.openpgp_crt_init(ctypes.byref(crt))
1348
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1349
(gnutls.library.functions
1350
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2478
1351
# Import the OpenPGP public key into the certificate
2479
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2480
gnutls.OPENPGP_FMT_RAW)
1352
(gnutls.library.functions
1353
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1354
gnutls.library.constants
1355
.GNUTLS_OPENPGP_FMT_RAW))
2481
1356
# Verify the self signature in the key
2482
1357
crtverify = ctypes.c_uint()
2483
gnutls.openpgp_crt_verify_self(crt, 0,
2484
ctypes.byref(crtverify))
1358
(gnutls.library.functions
1359
.gnutls_openpgp_crt_verify_self(crt, 0,
1360
ctypes.byref(crtverify)))
2485
1361
if crtverify.value != 0:
2486
gnutls.openpgp_crt_deinit(crt)
2487
raise gnutls.CertificateSecurityError(code
2488
=crtverify.value)
1362
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1363
raise (gnutls.errors.CertificateSecurityError
1364
(u"Verify failed"))
2489
1365
# New buffer for the fingerprint
2490
1366
buf = ctypes.create_string_buffer(20)
2491
1367
buf_len = ctypes.c_size_t()
2492
1368
# Get the fingerprint from the certificate into the buffer
2493
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2494
ctypes.byref(buf_len))
1369
(gnutls.library.functions
1370
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1371
ctypes.byref(buf_len)))
2495
1372
# Deinit the certificate
2496
gnutls.openpgp_crt_deinit(crt)
1373
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2497
1374
# Convert the buffer to a Python bytestring
2498
1375
fpr = ctypes.string_at(buf, buf_len.value)
2499
1376
# Convert the bytestring to hexadecimal notation
2500
hex_fpr = binascii.hexlify(fpr).upper()
1377
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
2501
1378
return hex_fpr
2502
1379
2503
1380
2504
class MultiprocessingMixIn:
1381
class MultiprocessingMixIn(object):
2505
1382
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2506
2507
1383
def sub_process_main(self, request, address):
2508
1384
try:
2509
1385
self.finish_request(request, address)
2510
except Exception:
1386
except:
2511
1387
self.handle_error(request, address)
2512
1388
self.close_request(request)
2513
1389
2514
1390
def process_request(self, request, address):
2515
1391
"""Start a new process to process the request."""
2516
proc = multiprocessing.Process(target=self.sub_process_main,
2517
args=(request, address))
2518
proc.start()
2519
return proc
2520
2521
2522
class MultiprocessingMixInWithPipe(MultiprocessingMixIn):
1392
multiprocessing.Process(target = self.sub_process_main,
1393
args = (request, address)).start()
1394
1395
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2523
1396
""" adds a pipe to the MixIn """
2524
2525
1397
def process_request(self, request, client_address):
2526
1398
"""Overrides and wraps the original process_request().
2527
1399
2528
1400
This function creates a new pipe in self.pipe
2529
1401
"""
2530
1402
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2531
1403
2532
proc = MultiprocessingMixIn.process_request(self, request,
2533
client_address)
1404
super(MultiprocessingMixInWithPipe,
1405
self).process_request(request, client_address)
2534
1406
self.child_pipe.close()
2535
self.add_pipe(parent_pipe, proc)
1407
self.add_pipe(parent_pipe)
2536
1408
2537
def add_pipe(self, parent_pipe, proc):
1409
def add_pipe(self, parent_pipe):
2538
1410
"""Dummy function; override as necessary"""
2539
raise NotImplementedError()
2540
1411
pass
2541
1412
2542
1413
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2543
socketserver.TCPServer):
1414
socketserver.TCPServer, object):
2544
1415
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
2545
1416
2546
1417
Attributes:
2547
1418
enabled: Boolean; whether this server is activated yet
2548
1419
interface: None or a network interface name (string)
2549
1420
use_ipv6: Boolean; to use IPv6 or not
2550
1421
"""
2551
2552
1422
def __init__(self, server_address, RequestHandlerClass,
2553
interface=None,
2554
use_ipv6=True,
2555
socketfd=None):
2556
"""If socketfd is set, use that file descriptor instead of
2557
creating a new one with socket.socket().
2558
"""
1423
interface=None, use_ipv6=True):
2559
1424
self.interface = interface
2560
1425
if use_ipv6:
2561
1426
self.address_family = socket.AF_INET6
2562
if socketfd is not None:
2563
# Save the file descriptor
2564
self.socketfd = socketfd
2565
# Save the original socket.socket() function
2566
self.socket_socket = socket.socket
2567
2568
# To implement --socket, we monkey patch socket.socket.
2569
#
2570
# (When socketserver.TCPServer is a new-style class, we
2571
# could make self.socket into a property instead of monkey
2572
# patching socket.socket.)
2573
#
2574
# Create a one-time-only replacement for socket.socket()
2575
@functools.wraps(socket.socket)
2576
def socket_wrapper(*args, **kwargs):
2577
# Restore original function so subsequent calls are
2578
# not affected.
2579
socket.socket = self.socket_socket
2580
del self.socket_socket
2581
# This time only, return a new socket object from the
2582
# saved file descriptor.
2583
return socket.fromfd(self.socketfd, *args, **kwargs)
2584
# Replace socket.socket() function with wrapper
2585
socket.socket = socket_wrapper
2586
# The socketserver.TCPServer.__init__ will call
2587
# socket.socket(), which might be our replacement,
2588
# socket_wrapper(), if socketfd was set.
2589
1427
socketserver.TCPServer.__init__(self, server_address,
2590
1428
RequestHandlerClass)
2591
2592
1429
def server_bind(self):
2593
1430
"""This overrides the normal server_bind() function
2594
1431
to bind to an interface if one was specified, and also NOT to
2595
1432
bind to an address or port if they were not specified."""
2596
global SO_BINDTODEVICE
2597
1433
if self.interface is not None:
2598
1434
if SO_BINDTODEVICE is None:
2599
# Fall back to a hard-coded value which seems to be
2600
# common enough.
2601
logger.warning("SO_BINDTODEVICE not found, trying 25")
2602
SO_BINDTODEVICE = 25
2603
try:
2604
self.socket.setsockopt(
2605
socket.SOL_SOCKET, SO_BINDTODEVICE,
2606
(self.interface + "\0").encode("utf-8"))
2607
except socket.error as error:
2608
if error.errno == errno.EPERM:
2609
logger.error("No permission to bind to"
2610
" interface %s", self.interface)
2611
elif error.errno == errno.ENOPROTOOPT:
2612
logger.error("SO_BINDTODEVICE not available;"
2613
" cannot bind to interface %s",
2614
self.interface)
2615
elif error.errno == errno.ENODEV:
2616
logger.error("Interface %s does not exist,"
2617
" cannot bind", self.interface)
2618
else:
2619
raise
1435
logger.error(u"SO_BINDTODEVICE does not exist;"
1436
u" cannot bind to interface %s",
1437
self.interface)
1438
else:
1439
try:
1440
self.socket.setsockopt(socket.SOL_SOCKET,
1441
SO_BINDTODEVICE,
1442
str(self.interface
1443
+ u'\0'))
1444
except socket.error, error:
1445
if error[0] == errno.EPERM:
1446
logger.error(u"No permission to"
1447
u" bind to interface %s",
1448
self.interface)
1449
elif error[0] == errno.ENOPROTOOPT:
1450
logger.error(u"SO_BINDTODEVICE not available;"
1451
u" cannot bind to interface %s",
1452
self.interface)
1453
else:
1454
raise
2620
1455
# Only bind(2) the socket if we really need to.
2621
1456
if self.server_address[0] or self.server_address[1]:
2622
if self.server_address[1]:
2623
self.allow_reuse_address = True
2624
1457
if not self.server_address[0]:
2625
1458
if self.address_family == socket.AF_INET6:
2626
any_address = "::" # in6addr_any
1459
any_address = u"::" # in6addr_any
2627
1460
else:
2628
any_address = "0.0.0.0" # INADDR_ANY
1461
any_address = socket.INADDR_ANY
2629
1462
self.server_address = (any_address,
2630
1463
self.server_address[1])
2631
1464
elif not self.server_address[1]:
2632
self.server_address = (self.server_address[0], 0)
1465
self.server_address = (self.server_address[0],
1466
0)
2633
1467
# if self.interface:
2634
1468
# self.server_address = (self.server_address[0],
2635
1469
# 0, # port
2641
1475
2642
1476
class MandosServer(IPv6_TCPServer):
2643
1477
"""Mandos server.
2644
1478
2645
1479
Attributes:
2646
1480
clients: set of Client objects
2647
1481
gnutls_priority GnuTLS priority string
2648
1482
use_dbus: Boolean; to emit D-Bus signals or not
2649
2650
Assumes a GLib.MainLoop event loop.
1483
1484
Assumes a gobject.MainLoop event loop.
2651
1485
"""
2652
2653
1486
def __init__(self, server_address, RequestHandlerClass,
2654
interface=None,
2655
use_ipv6=True,
2656
clients=None,
2657
gnutls_priority=None,
2658
use_dbus=True,
2659
socketfd=None):
1487
interface=None, use_ipv6=True, clients=None,
1488
gnutls_priority=None, use_dbus=True):
2660
1489
self.enabled = False
2661
1490
self.clients = clients
2662
1491
if self.clients is None:
2663
self.clients = {}
1492
self.clients = set()
2664
1493
self.use_dbus = use_dbus
2665
1494
self.gnutls_priority = gnutls_priority
2666
1495
IPv6_TCPServer.__init__(self, server_address,
2667
1496
RequestHandlerClass,
2668
interface=interface,
2669
use_ipv6=use_ipv6,
2670
socketfd=socketfd)
2671
1497
interface = interface,
1498
use_ipv6 = use_ipv6)
2672
1499
def server_activate(self):
2673
1500
if self.enabled:
2674
1501
return socketserver.TCPServer.server_activate(self)
2675
2676
1502
def enable(self):
2677
1503
self.enabled = True
2678
2679
def add_pipe(self, parent_pipe, proc):
1504
def add_pipe(self, parent_pipe):
2680
1505
# Call "handle_ipc" for both data and EOF events
2681
GLib.io_add_watch(
2682
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2683
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2684
functools.partial(self.handle_ipc,
2685
parent_pipe=parent_pipe,
2686
proc=proc))
2687
2688
def handle_ipc(self, source, condition,
2689
parent_pipe=None,
2690
proc=None,
1506
gobject.io_add_watch(parent_pipe.fileno(),
1507
gobject.IO_IN | gobject.IO_HUP,
1508
functools.partial(self.handle_ipc,
1509
parent_pipe = parent_pipe))
1510
1511
def handle_ipc(self, source, condition, parent_pipe=None,
2691
1512
client_object=None):
2692
# error, or the other end of multiprocessing.Pipe has closed
2693
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2694
# Wait for other process to exit
2695
proc.join()
1513
condition_names = {
1514
gobject.IO_IN: u"IN", # There is data to read.
1515
gobject.IO_OUT: u"OUT", # Data can be written (without
1516
# blocking).
1517
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1518
gobject.IO_ERR: u"ERR", # Error condition.
1519
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1520
# broken, usually for pipes and
1521
# sockets).
1522
}
1523
conditions_string = ' | '.join(name
1524
for cond, name in
1525
condition_names.iteritems()
1526
if cond & condition)
1527
# error or the other end of multiprocessing.Pipe has closed
1528
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2696
1529
return False
2697
1530
2698
1531
# Read a request from the child
2699
1532
request = parent_pipe.recv()
2700
1533
command = request[0]
2701
1534
2702
1535
if command == 'init':
2703
key_id = request[1].decode("ascii")
2704
fpr = request[2].decode("ascii")
2705
address = request[3]
2706
2707
for c in self.clients.values():
2708
if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2709
continue
2710
if key_id and c.key_id == key_id:
2711
client = c
2712
break
2713
if fpr and c.fingerprint == fpr:
1536
fpr = request[1]
1537
address = request[2]
1538
1539
for c in self.clients:
1540
if c.fingerprint == fpr:
2714
1541
client = c
2715
1542
break
2716
1543
else:
2717
logger.info("Client not found for key ID: %s, address"
2718
": %s", key_id or fpr, address)
1544
logger.warning(u"Client not found for fingerprint: %s, ad"
1545
u"dress: %s", fpr, address)
2719
1546
if self.use_dbus:
2720
1547
# Emit D-Bus signal
2721
mandos_dbus_service.ClientNotFound(key_id or fpr,
2722
address[0])
1548
mandos_dbus_service.ClientNotFound(fpr, address[0])
2723
1549
parent_pipe.send(False)
2724
1550
return False
2725
2726
GLib.io_add_watch(
2727
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2728
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2729
functools.partial(self.handle_ipc,
2730
parent_pipe=parent_pipe,
2731
proc=proc,
2732
client_object=client))
1551
1552
gobject.io_add_watch(parent_pipe.fileno(),
1553
gobject.IO_IN | gobject.IO_HUP,
1554
functools.partial(self.handle_ipc,
1555
parent_pipe = parent_pipe,
1556
client_object = client))
2733
1557
parent_pipe.send(True)
2734
# remove the old hook in favor of the new above hook on
2735
# same fileno
1558
# remove the old hook in favor of the new above hook on same fileno
2736
1559
return False
2737
1560
if command == 'funcall':
2738
1561
funcname = request[1]
2739
1562
args = request[2]
2740
1563
kwargs = request[3]
2741
2742
parent_pipe.send(('data', getattr(client_object,
2743
funcname)(*args,
2744
**kwargs)))
1564
1565
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
2745
1566
2746
1567
if command == 'getattr':
2747
1568
attrname = request[1]
2748
if isinstance(client_object.__getattribute__(attrname),
2749
collections.Callable):
2750
parent_pipe.send(('function', ))
1569
if callable(client_object.__getattribute__(attrname)):
1570
parent_pipe.send(('function',))
2751
1571
else:
2752
parent_pipe.send((
2753
'data', client_object.__getattribute__(attrname)))
2754
1572
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
1573
2755
1574
if command == 'setattr':
2756
1575
attrname = request[1]
2757
1576
value = request[2]
2760
1579
return True
2761
1580
2762
1581
2763
def rfc3339_duration_to_delta(duration):
2764
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2765
2766
>>> rfc3339_duration_to_delta("P7D") == datetime.timedelta(7)
2767
True
2768
>>> rfc3339_duration_to_delta("PT60S") == datetime.timedelta(0, 60)
2769
True
2770
>>> rfc3339_duration_to_delta("PT60M") == datetime.timedelta(0, 3600)
2771
True
2772
>>> rfc3339_duration_to_delta("PT24H") == datetime.timedelta(1)
2773
True
2774
>>> rfc3339_duration_to_delta("P1W") == datetime.timedelta(7)
2775
True
2776
>>> rfc3339_duration_to_delta("PT5M30S") == datetime.timedelta(0, 330)
2777
True
2778
>>> rfc3339_duration_to_delta("P1DT3M20S") == datetime.timedelta(1, 200)
2779
True
2780
"""
2781
2782
# Parsing an RFC 3339 duration with regular expressions is not
2783
# possible - there would have to be multiple places for the same
2784
# values, like seconds. The current code, while more esoteric, is
2785
# cleaner without depending on a parsing library. If Python had a
2786
# built-in library for parsing we would use it, but we'd like to
2787
# avoid excessive use of external libraries.
2788
2789
# New type for defining tokens, syntax, and semantics all-in-one
2790
Token = collections.namedtuple("Token", (
2791
"regexp", # To match token; if "value" is not None, must have
2792
# a "group" containing digits
2793
"value", # datetime.timedelta or None
2794
"followers")) # Tokens valid after this token
2795
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2796
# the "duration" ABNF definition in RFC 3339, Appendix A.
2797
token_end = Token(re.compile(r"$"), None, frozenset())
2798
token_second = Token(re.compile(r"(\d+)S"),
2799
datetime.timedelta(seconds=1),
2800
frozenset((token_end, )))
2801
token_minute = Token(re.compile(r"(\d+)M"),
2802
datetime.timedelta(minutes=1),
2803
frozenset((token_second, token_end)))
2804
token_hour = Token(re.compile(r"(\d+)H"),
2805
datetime.timedelta(hours=1),
2806
frozenset((token_minute, token_end)))
2807
token_time = Token(re.compile(r"T"),
2808
None,
2809
frozenset((token_hour, token_minute,
2810
token_second)))
2811
token_day = Token(re.compile(r"(\d+)D"),
2812
datetime.timedelta(days=1),
2813
frozenset((token_time, token_end)))
2814
token_month = Token(re.compile(r"(\d+)M"),
2815
datetime.timedelta(weeks=4),
2816
frozenset((token_day, token_end)))
2817
token_year = Token(re.compile(r"(\d+)Y"),
2818
datetime.timedelta(weeks=52),
2819
frozenset((token_month, token_end)))
2820
token_week = Token(re.compile(r"(\d+)W"),
2821
datetime.timedelta(weeks=1),
2822
frozenset((token_end, )))
2823
token_duration = Token(re.compile(r"P"), None,
2824
frozenset((token_year, token_month,
2825
token_day, token_time,
2826
token_week)))
2827
# Define starting values:
2828
# Value so far
2829
value = datetime.timedelta()
2830
found_token = None
2831
# Following valid tokens
2832
followers = frozenset((token_duration, ))
2833
# String left to parse
2834
s = duration
2835
# Loop until end token is found
2836
while found_token is not token_end:
2837
# Search for any currently valid tokens
2838
for token in followers:
2839
match = token.regexp.match(s)
2840
if match is not None:
2841
# Token found
2842
if token.value is not None:
2843
# Value found, parse digits
2844
factor = int(match.group(1), 10)
2845
# Add to value so far
2846
value += factor * token.value
2847
# Strip token from string
2848
s = token.regexp.sub("", s, 1)
2849
# Go to found token
2850
found_token = token
2851
# Set valid next tokens
2852
followers = found_token.followers
2853
break
2854
else:
2855
# No currently valid tokens were found
2856
raise ValueError("Invalid RFC 3339 duration: {!r}"
2857
.format(duration))
2858
# End token found
2859
return value
2860
2861
2862
1582
def string_to_delta(interval):
2863
1583
"""Parse a string and return a datetime.timedelta
2864
2865
>>> string_to_delta('7d') == datetime.timedelta(7)
2866
True
2867
>>> string_to_delta('60s') == datetime.timedelta(0, 60)
2868
True
2869
>>> string_to_delta('60m') == datetime.timedelta(0, 3600)
2870
True
2871
>>> string_to_delta('24h') == datetime.timedelta(1)
2872
True
2873
>>> string_to_delta('1w') == datetime.timedelta(7)
2874
True
2875
>>> string_to_delta('5m 30s') == datetime.timedelta(0, 330)
2876
True
1584
1585
>>> string_to_delta(u'7d')
1586
datetime.timedelta(7)
1587
>>> string_to_delta(u'60s')
1588
datetime.timedelta(0, 60)
1589
>>> string_to_delta(u'60m')
1590
datetime.timedelta(0, 3600)
1591
>>> string_to_delta(u'24h')
1592
datetime.timedelta(1)
1593
>>> string_to_delta(u'1w')
1594
datetime.timedelta(7)
1595
>>> string_to_delta(u'5m 30s')
1596
datetime.timedelta(0, 330)
2877
1597
"""
2878
2879
try:
2880
return rfc3339_duration_to_delta(interval)
2881
except ValueError:
2882
pass
2883
2884
1598
timevalue = datetime.timedelta(0)
2885
1599
for s in interval.split():
2886
1600
try:
2887
suffix = s[-1]
1601
suffix = unicode(s[-1])
2888
1602
value = int(s[:-1])
2889
if suffix == "d":
1603
if suffix == u"d":
2890
1604
delta = datetime.timedelta(value)
2891
elif suffix == "s":
1605
elif suffix == u"s":
2892
1606
delta = datetime.timedelta(0, value)
2893
elif suffix == "m":
1607
elif suffix == u"m":
2894
1608
delta = datetime.timedelta(0, 0, 0, 0, value)
2895
elif suffix == "h":
1609
elif suffix == u"h":
2896
1610
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
2897
elif suffix == "w":
1611
elif suffix == u"w":
2898
1612
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2899
1613
else:
2900
raise ValueError("Unknown suffix {!r}".format(suffix))
2901
except IndexError as e:
2902
raise ValueError(*(e.args))
1614
raise ValueError(u"Unknown suffix %r" % suffix)
1615
except (ValueError, IndexError), e:
1616
raise ValueError(e.message)
2903
1617
timevalue += delta
2904
1618
return timevalue
2905
1619
2906
1620
2907
def daemon(nochdir=False, noclose=False):
1621
def if_nametoindex(interface):
1622
"""Call the C function if_nametoindex(), or equivalent
1623
1624
Note: This function cannot accept a unicode string."""
1625
global if_nametoindex
1626
try:
1627
if_nametoindex = (ctypes.cdll.LoadLibrary
1628
(ctypes.util.find_library(u"c"))
1629
.if_nametoindex)
1630
except (OSError, AttributeError):
1631
logger.warning(u"Doing if_nametoindex the hard way")
1632
def if_nametoindex(interface):
1633
"Get an interface index the hard way, i.e. using fcntl()"
1634
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1635
with contextlib.closing(socket.socket()) as s:
1636
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1637
struct.pack(str(u"16s16x"),
1638
interface))
1639
interface_index = struct.unpack(str(u"I"),
1640
ifreq[16:20])[0]
1641
return interface_index
1642
return if_nametoindex(interface)
1643
1644
1645
def daemon(nochdir = False, noclose = False):
2908
1646
"""See daemon(3). Standard BSD Unix function.
2909
1647
2910
1648
This should really exist as os.daemon, but it doesn't (yet)."""
2911
1649
if os.fork():
2912
1650
sys.exit()
2913
1651
os.setsid()
2914
1652
if not nochdir:
2915
os.chdir("/")
1653
os.chdir(u"/")
2916
1654
if os.fork():
2917
1655
sys.exit()
2918
1656
if not noclose:
2919
1657
# Close all standard open file descriptors
2920
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1658
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2921
1659
if not stat.S_ISCHR(os.fstat(null).st_mode):
2922
1660
raise OSError(errno.ENODEV,
2923
"{} not a character device"
2924
.format(os.devnull))
1661
u"%s not a character device"
1662
% os.path.devnull)
2925
1663
os.dup2(null, sys.stdin.fileno())
2926
1664
os.dup2(null, sys.stdout.fileno())
2927
1665
os.dup2(null, sys.stderr.fileno())
2930
1668
2931
1669
2932
1670
def main():
2933
1671
2934
1672
##################################################################
2935
1673
# Parsing of options, both command line and config file
2936
2937
parser = argparse.ArgumentParser()
2938
parser.add_argument("-v", "--version", action="version",
2939
version="%(prog)s {}".format(version),
2940
help="show version number and exit")
2941
parser.add_argument("-i", "--interface", metavar="IF",
2942
help="Bind to interface IF")
2943
parser.add_argument("-a", "--address",
2944
help="Address to listen for requests on")
2945
parser.add_argument("-p", "--port", type=int,
2946
help="Port number to receive requests on")
2947
parser.add_argument("--check", action="store_true",
2948
help="Run self-test")
2949
parser.add_argument("--debug", action="store_true",
2950
help="Debug mode; run in foreground and log"
2951
" to terminal", default=None)
2952
parser.add_argument("--debuglevel", metavar="LEVEL",
2953
help="Debug level for stdout output")
2954
parser.add_argument("--priority", help="GnuTLS"
2955
" priority string (see GnuTLS documentation)")
2956
parser.add_argument("--servicename",
2957
metavar="NAME", help="Zeroconf service name")
2958
parser.add_argument("--configdir",
2959
default="/etc/mandos", metavar="DIR",
2960
help="Directory to search for configuration"
2961
" files")
2962
parser.add_argument("--no-dbus", action="store_false",
2963
dest="use_dbus", help="Do not provide D-Bus"
2964
" system bus interface", default=None)
2965
parser.add_argument("--no-ipv6", action="store_false",
2966
dest="use_ipv6", help="Do not use IPv6",
2967
default=None)
2968
parser.add_argument("--no-restore", action="store_false",
2969
dest="restore", help="Do not restore stored"
2970
" state", default=None)
2971
parser.add_argument("--socket", type=int,
2972
help="Specify a file descriptor to a network"
2973
" socket to use instead of creating one")
2974
parser.add_argument("--statedir", metavar="DIR",
2975
help="Directory to save/restore state in")
2976
parser.add_argument("--foreground", action="store_true",
2977
help="Run in foreground", default=None)
2978
parser.add_argument("--no-zeroconf", action="store_false",
2979
dest="zeroconf", help="Do not use Zeroconf",
2980
default=None)
2981
2982
options = parser.parse_args()
2983
1674
1675
parser = optparse.OptionParser(version = "%%prog %s" % version)
1676
parser.add_option("-i", u"--interface", type=u"string",
1677
metavar="IF", help=u"Bind to interface IF")
1678
parser.add_option("-a", u"--address", type=u"string",
1679
help=u"Address to listen for requests on")
1680
parser.add_option("-p", u"--port", type=u"int",
1681
help=u"Port number to receive requests on")
1682
parser.add_option("--check", action=u"store_true",
1683
help=u"Run self-test")
1684
parser.add_option("--debug", action=u"store_true",
1685
help=u"Debug mode; run in foreground and log to"
1686
u" terminal")
1687
parser.add_option("--debuglevel", type=u"string", metavar="LEVEL",
1688
help=u"Debug level for stdout output")
1689
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1690
u" priority string (see GnuTLS documentation)")
1691
parser.add_option("--servicename", type=u"string",
1692
metavar=u"NAME", help=u"Zeroconf service name")
1693
parser.add_option("--configdir", type=u"string",
1694
default=u"/etc/mandos", metavar=u"DIR",
1695
help=u"Directory to search for configuration"
1696
u" files")
1697
parser.add_option("--no-dbus", action=u"store_false",
1698
dest=u"use_dbus", help=u"Do not provide D-Bus"
1699
u" system bus interface")
1700
parser.add_option("--no-ipv6", action=u"store_false",
1701
dest=u"use_ipv6", help=u"Do not use IPv6")
1702
options = parser.parse_args()[0]
1703
1704
if options.check:
1705
import doctest
1706
doctest.testmod()
1707
sys.exit()
1708
2984
1709
# Default values for config file for server-global settings
2985
if gnutls.has_rawpk:
2986
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
2987
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
2988
else:
2989
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2990
":+SIGN-DSA-SHA256")
2991
server_defaults = {"interface": "",
2992
"address": "",
2993
"port": "",
2994
"debug": "False",
2995
"priority": priority,
2996
"servicename": "Mandos",
2997
"use_dbus": "True",
2998
"use_ipv6": "True",
2999
"debuglevel": "",
3000
"restore": "True",
3001
"socket": "",
3002
"statedir": "/var/lib/mandos",
3003
"foreground": "False",
3004
"zeroconf": "True",
3005
}
3006
del priority
3007
1710
server_defaults = { u"interface": u"",
1711
u"address": u"",
1712
u"port": u"",
1713
u"debug": u"False",
1714
u"priority":
1715
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1716
u"servicename": u"Mandos",
1717
u"use_dbus": u"True",
1718
u"use_ipv6": u"True",
1719
u"debuglevel": u"",
1720
}
1721
3008
1722
# Parse config file for server-global settings
3009
server_config = configparser.ConfigParser(server_defaults)
1723
server_config = configparser.SafeConfigParser(server_defaults)
3010
1724
del server_defaults
3011
server_config.read(os.path.join(options.configdir, "mandos.conf"))
3012
# Convert the ConfigParser object to a dict
1725
server_config.read(os.path.join(options.configdir,
1726
u"mandos.conf"))
1727
# Convert the SafeConfigParser object to a dict
3013
1728
server_settings = server_config.defaults()
3014
1729
# Use the appropriate methods on the non-string config options
3015
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3016
"foreground", "zeroconf"):
3017
server_settings[option] = server_config.getboolean("DEFAULT",
1730
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1731
server_settings[option] = server_config.getboolean(u"DEFAULT",
3018
1732
option)
3019
1733
if server_settings["port"]:
3020
server_settings["port"] = server_config.getint("DEFAULT",
3021
"port")
3022
if server_settings["socket"]:
3023
server_settings["socket"] = server_config.getint("DEFAULT",
3024
"socket")
3025
# Later, stdin will, and stdout and stderr might, be dup'ed
3026
# over with an opened os.devnull. But we don't want this to
3027
# happen with a supplied network socket.
3028
if 0 <= server_settings["socket"] <= 2:
3029
server_settings["socket"] = os.dup(server_settings
3030
["socket"])
1734
server_settings["port"] = server_config.getint(u"DEFAULT",
1735
u"port")
3031
1736
del server_config
3032
1737
3033
1738
# Override the settings from the config file with command line
3034
1739
# options, if set.
3035
for option in ("interface", "address", "port", "debug",
3036
"priority", "servicename", "configdir", "use_dbus",
3037
"use_ipv6", "debuglevel", "restore", "statedir",
3038
"socket", "foreground", "zeroconf"):
1740
for option in (u"interface", u"address", u"port", u"debug",
1741
u"priority", u"servicename", u"configdir",
1742
u"use_dbus", u"use_ipv6", u"debuglevel"):
3039
1743
value = getattr(options, option)
3040
1744
if value is not None:
3041
1745
server_settings[option] = value
3042
1746
del options
3043
1747
# Force all strings to be unicode
3044
1748
for option in server_settings.keys():
3045
if isinstance(server_settings[option], bytes):
3046
server_settings[option] = (server_settings[option]
3047
.decode("utf-8"))
3048
# Force all boolean options to be boolean
3049
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3050
"foreground", "zeroconf"):
3051
server_settings[option] = bool(server_settings[option])
3052
# Debug implies foreground
3053
if server_settings["debug"]:
3054
server_settings["foreground"] = True
1749
if type(server_settings[option]) is str:
1750
server_settings[option] = unicode(server_settings[option])
3055
1751
# Now we have our good server settings in "server_settings"
3056
1752
3057
1753
##################################################################
3058
3059
if (not server_settings["zeroconf"]
3060
and not (server_settings["port"]
3061
or server_settings["socket"] != "")):
3062
parser.error("Needs port or socket to work without Zeroconf")
3063
1754
3064
1755
# For convenience
3065
debug = server_settings["debug"]
3066
debuglevel = server_settings["debuglevel"]
3067
use_dbus = server_settings["use_dbus"]
3068
use_ipv6 = server_settings["use_ipv6"]
3069
stored_state_path = os.path.join(server_settings["statedir"],
3070
stored_state_file)
3071
foreground = server_settings["foreground"]
3072
zeroconf = server_settings["zeroconf"]
3073
3074
if debug:
3075
initlogger(debug, logging.DEBUG)
3076
else:
3077
if not debuglevel:
3078
initlogger(debug)
3079
else:
3080
level = getattr(logging, debuglevel.upper())
3081
initlogger(debug, level)
3082
3083
if server_settings["servicename"] != "Mandos":
3084
syslogger.setFormatter(
3085
logging.Formatter('Mandos ({}) [%(process)d]:'
3086
' %(levelname)s: %(message)s'.format(
3087
server_settings["servicename"])))
3088
1756
debug = server_settings[u"debug"]
1757
debuglevel = server_settings[u"debuglevel"]
1758
use_dbus = server_settings[u"use_dbus"]
1759
use_ipv6 = server_settings[u"use_ipv6"]
1760
1761
if server_settings[u"servicename"] != u"Mandos":
1762
syslogger.setFormatter(logging.Formatter
1763
(u'Mandos (%s) [%%(process)d]:'
1764
u' %%(levelname)s: %%(message)s'
1765
% server_settings[u"servicename"]))
1766
3089
1767
# Parse config file with clients
3090
client_config = configparser.ConfigParser(Client.client_defaults)
3091
client_config.read(os.path.join(server_settings["configdir"],
3092
"clients.conf"))
3093
1768
client_defaults = { u"timeout": u"1h",
1769
u"interval": u"5m",
1770
u"checker": u"fping -q -- %%(host)s",
1771
u"host": u"",
1772
u"approval_delay": u"0s",
1773
u"approval_duration": u"1s",
1774
}
1775
client_config = configparser.SafeConfigParser(client_defaults)
1776
client_config.read(os.path.join(server_settings[u"configdir"],
1777
u"clients.conf"))
1778
3094
1779
global mandos_dbus_service
3095
1780
mandos_dbus_service = None
3096
3097
socketfd = None
3098
if server_settings["socket"] != "":
3099
socketfd = server_settings["socket"]
3100
tcp_server = MandosServer(
3101
(server_settings["address"], server_settings["port"]),
3102
ClientHandler,
3103
interface=(server_settings["interface"] or None),
3104
use_ipv6=use_ipv6,
3105
gnutls_priority=server_settings["priority"],
3106
use_dbus=use_dbus,
3107
socketfd=socketfd)
3108
if not foreground:
3109
pidfilename = "/run/mandos.pid"
3110
if not os.path.isdir("/run/."):
3111
pidfilename = "/var/run/mandos.pid"
3112
pidfile = None
3113
try:
3114
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3115
except IOError as e:
3116
logger.error("Could not open file %r", pidfilename,
3117
exc_info=e)
3118
3119
for name, group in (("_mandos", "_mandos"),
3120
("mandos", "mandos"),
3121
("nobody", "nogroup")):
3122
try:
3123
uid = pwd.getpwnam(name).pw_uid
3124
gid = pwd.getpwnam(group).pw_gid
3125
break
1781
1782
tcp_server = MandosServer((server_settings[u"address"],
1783
server_settings[u"port"]),
1784
ClientHandler,
1785
interface=(server_settings[u"interface"]
1786
or None),
1787
use_ipv6=use_ipv6,
1788
gnutls_priority=
1789
server_settings[u"priority"],
1790
use_dbus=use_dbus)
1791
if not debug:
1792
pidfilename = u"/var/run/mandos.pid"
1793
try:
1794
pidfile = open(pidfilename, u"w")
1795
except IOError:
1796
logger.error(u"Could not open file %r", pidfilename)
1797
1798
try:
1799
uid = pwd.getpwnam(u"_mandos").pw_uid
1800
gid = pwd.getpwnam(u"_mandos").pw_gid
1801
except KeyError:
1802
try:
1803
uid = pwd.getpwnam(u"mandos").pw_uid
1804
gid = pwd.getpwnam(u"mandos").pw_gid
3126
1805
except KeyError:
3127
continue
3128
else:
3129
uid = 65534
3130
gid = 65534
1806
try:
1807
uid = pwd.getpwnam(u"nobody").pw_uid
1808
gid = pwd.getpwnam(u"nobody").pw_gid
1809
except KeyError:
1810
uid = 65534
1811
gid = 65534
3131
1812
try:
3132
1813
os.setgid(gid)
3133
1814
os.setuid(uid)
3134
if debug:
3135
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3136
gid))
3137
except OSError as error:
3138
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3139
.format(uid, gid, os.strerror(error.errno)))
3140
if error.errno != errno.EPERM:
3141
raise
1815
except OSError, error:
1816
if error[0] != errno.EPERM:
1817
raise error
1818
1819
if not debug and not debuglevel:
1820
syslogger.setLevel(logging.WARNING)
1821
console.setLevel(logging.WARNING)
1822
if debuglevel:
1823
level = getattr(logging, debuglevel.upper())
1824
syslogger.setLevel(level)
1825
console.setLevel(level)
3142
1826
3143
1827
if debug:
3144
1828
# Enable all possible GnuTLS debugging
3145
1829
3146
1830
# "Use a log level over 10 to enable all debugging options."
3147
1831
# - GnuTLS manual
3148
gnutls.global_set_log_level(11)
3149
3150
@gnutls.log_func
1832
gnutls.library.functions.gnutls_global_set_log_level(11)
1833
1834
@gnutls.library.types.gnutls_log_func
3151
1835
def debug_gnutls(level, string):
3152
logger.debug("GnuTLS: %s", string[:-1])
3153
3154
gnutls.global_set_log_function(debug_gnutls)
3155
1836
logger.debug(u"GnuTLS: %s", string[:-1])
1837
1838
(gnutls.library.functions
1839
.gnutls_global_set_log_function(debug_gnutls))
1840
3156
1841
# Redirect stdin so all checkers get /dev/null
3157
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1842
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3158
1843
os.dup2(null, sys.stdin.fileno())
3159
1844
if null > 2:
3160
1845
os.close(null)
3161
1846
else:
1847
# No console logging
1848
logger.removeHandler(console)
1849
3162
1850
# Need to fork before connecting to D-Bus
3163
if not foreground:
1851
if not debug:
3164
1852
# Close all input and output, do double fork, etc.
3165
1853
daemon()
3166
3167
if gi.version_info < (3, 10, 2):
3168
# multiprocessing will use threads, so before we use GLib we
3169
# need to inform GLib that threads will be used.
3170
GLib.threads_init()
3171
1854
3172
1855
global main_loop
3173
1856
# From the Avahi example code
3174
DBusGMainLoop(set_as_default=True)
3175
main_loop = GLib.MainLoop()
1857
DBusGMainLoop(set_as_default=True )
1858
main_loop = gobject.MainLoop()
3176
1859
bus = dbus.SystemBus()
3177
1860
# End of Avahi example code
3178
1861
if use_dbus:
3179
1862
try:
3180
bus_name = dbus.service.BusName("se.recompile.Mandos",
3181
bus,
3182
do_not_queue=True)
3183
old_bus_name = dbus.service.BusName(
3184
"se.bsnet.fukt.Mandos", bus,
3185
do_not_queue=True)
3186
except dbus.exceptions.DBusException as e:
3187
logger.error("Disabling D-Bus:", exc_info=e)
1863
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
1864
bus, do_not_queue=True)
1865
except dbus.exceptions.NameExistsException, e:
1866
logger.error(unicode(e) + u", disabling D-Bus")
3188
1867
use_dbus = False
3189
server_settings["use_dbus"] = False
1868
server_settings[u"use_dbus"] = False
3190
1869
tcp_server.use_dbus = False
3191
if zeroconf:
3192
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3193
service = AvahiServiceToSyslog(
3194
name=server_settings["servicename"],
3195
servicetype="_mandos._tcp",
3196
protocol=protocol,
3197
bus=bus)
3198
if server_settings["interface"]:
3199
service.interface = if_nametoindex(
3200
server_settings["interface"].encode("utf-8"))
3201
1870
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1871
service = AvahiService(name = server_settings[u"servicename"],
1872
servicetype = u"_mandos._tcp",
1873
protocol = protocol, bus = bus)
1874
if server_settings["interface"]:
1875
service.interface = (if_nametoindex
1876
(str(server_settings[u"interface"])))
1877
3202
1878
global multiprocessing_manager
3203
1879
multiprocessing_manager = multiprocessing.Manager()
3204
1880
3205
1881
client_class = Client
3206
1882
if use_dbus:
3207
client_class = functools.partial(ClientDBus, bus=bus)
3208
3209
client_settings = Client.config_parser(client_config)
3210
old_client_settings = {}
3211
clients_data = {}
3212
3213
# This is used to redirect stdout and stderr for checker processes
3214
global wnull
3215
wnull = open(os.devnull, "w") # A writable /dev/null
3216
# Only used if server is running in foreground but not in debug
3217
# mode
3218
if debug or not foreground:
3219
wnull.close()
3220
3221
# Get client data and settings from last running state.
3222
if server_settings["restore"]:
3223
try:
3224
with open(stored_state_path, "rb") as stored_state:
3225
if sys.version_info.major == 2:
3226
clients_data, old_client_settings = pickle.load(
3227
stored_state)
3228
else:
3229
bytes_clients_data, bytes_old_client_settings = (
3230
pickle.load(stored_state, encoding="bytes"))
3231
# Fix bytes to strings
3232
# clients_data
3233
# .keys()
3234
clients_data = {(key.decode("utf-8")
3235
if isinstance(key, bytes)
3236
else key): value
3237
for key, value in
3238
bytes_clients_data.items()}
3239
del bytes_clients_data
3240
for key in clients_data:
3241
value = {(k.decode("utf-8")
3242
if isinstance(k, bytes) else k): v
3243
for k, v in
3244
clients_data[key].items()}
3245
clients_data[key] = value
3246
# .client_structure
3247
value["client_structure"] = [
3248
(s.decode("utf-8")
3249
if isinstance(s, bytes)
3250
else s) for s in
3251
value["client_structure"]]
3252
# .name, .host, and .checker_command
3253
for k in ("name", "host", "checker_command"):
3254
if isinstance(value[k], bytes):
3255
value[k] = value[k].decode("utf-8")
3256
if "key_id" not in value:
3257
value["key_id"] = ""
3258
elif "fingerprint" not in value:
3259
value["fingerprint"] = ""
3260
# old_client_settings
3261
# .keys()
3262
old_client_settings = {
3263
(key.decode("utf-8")
3264
if isinstance(key, bytes)
3265
else key): value
3266
for key, value in
3267
bytes_old_client_settings.items()}
3268
del bytes_old_client_settings
3269
# .host and .checker_command
3270
for value in old_client_settings.values():
3271
for attribute in ("host", "checker_command"):
3272
if isinstance(value[attribute], bytes):
3273
value[attribute] = (value[attribute]
3274
.decode("utf-8"))
3275
os.remove(stored_state_path)
3276
except IOError as e:
3277
if e.errno == errno.ENOENT:
3278
logger.warning("Could not load persistent state:"
3279
" {}".format(os.strerror(e.errno)))
3280
else:
3281
logger.critical("Could not load persistent state:",
3282
exc_info=e)
3283
raise
3284
except EOFError as e:
3285
logger.warning("Could not load persistent state: "
3286
"EOFError:",
3287
exc_info=e)
3288
3289
with PGPEngine() as pgp:
3290
for client_name, client in clients_data.items():
3291
# Skip removed clients
3292
if client_name not in client_settings:
3293
continue
3294
3295
# Decide which value to use after restoring saved state.
3296
# We have three different values: Old config file,
3297
# new config file, and saved state.
3298
# New config value takes precedence if it differs from old
3299
# config value, otherwise use saved state.
3300
for name, value in client_settings[client_name].items():
3301
try:
3302
# For each value in new config, check if it
3303
# differs from the old config value (Except for
3304
# the "secret" attribute)
3305
if (name != "secret"
3306
and (value !=
3307
old_client_settings[client_name][name])):
3308
client[name] = value
3309
except KeyError:
3310
pass
3311
3312
# Clients who has passed its expire date can still be
3313
# enabled if its last checker was successful. A Client
3314
# whose checker succeeded before we stored its state is
3315
# assumed to have successfully run all checkers during
3316
# downtime.
3317
if client["enabled"]:
3318
if datetime.datetime.utcnow() >= client["expires"]:
3319
if not client["last_checked_ok"]:
3320
logger.warning(
3321
"disabling client {} - Client never "
3322
"performed a successful checker".format(
3323
client_name))
3324
client["enabled"] = False
3325
elif client["last_checker_status"] != 0:
3326
logger.warning(
3327
"disabling client {} - Client last"
3328
" checker failed with error code"
3329
" {}".format(
3330
client_name,
3331
client["last_checker_status"]))
3332
client["enabled"] = False
3333
else:
3334
client["expires"] = (
3335
datetime.datetime.utcnow()
3336
+ client["timeout"])
3337
logger.debug("Last checker succeeded,"
3338
" keeping {} enabled".format(
3339
client_name))
1883
client_class = functools.partial(ClientDBus, bus = bus)
1884
def client_config_items(config, section):
1885
special_settings = {
1886
"approved_by_default":
1887
lambda: config.getboolean(section,
1888
"approved_by_default"),
1889
}
1890
for name, value in config.items(section):
3340
1891
try:
3341
client["secret"] = pgp.decrypt(
3342
client["encrypted_secret"],
3343
client_settings[client_name]["secret"])
3344
except PGPError:
3345
# If decryption fails, we use secret from new settings
3346
logger.debug("Failed to decrypt {} old secret".format(
3347
client_name))
3348
client["secret"] = (client_settings[client_name]
3349
["secret"])
3350
3351
# Add/remove clients based on new changes made to config
3352
for client_name in (set(old_client_settings)
3353
- set(client_settings)):
3354
del clients_data[client_name]
3355
for client_name in (set(client_settings)
3356
- set(old_client_settings)):
3357
clients_data[client_name] = client_settings[client_name]
3358
3359
# Create all client objects
3360
for client_name, client in clients_data.items():
3361
tcp_server.clients[client_name] = client_class(
3362
name=client_name,
3363
settings=client,
3364
server_settings=server_settings)
3365
1892
yield (name, special_settings[name]())
1893
except KeyError:
1894
yield (name, value)
1895
1896
tcp_server.clients.update(set(
1897
client_class(name = section,
1898
config= dict(client_config_items(
1899
client_config, section)))
1900
for section in client_config.sections()))
3366
1901
if not tcp_server.clients:
3367
logger.warning("No clients defined")
3368
3369
if not foreground:
3370
if pidfile is not None:
3371
pid = os.getpid()
3372
try:
3373
with pidfile:
3374
print(pid, file=pidfile)
3375
except IOError:
3376
logger.error("Could not write to file %r with PID %d",
3377
pidfilename, pid)
3378
del pidfile
1902
logger.warning(u"No clients defined")
1903
1904
if not debug:
1905
try:
1906
with pidfile:
1907
pid = os.getpid()
1908
pidfile.write(str(pid) + "\n")
1909
del pidfile
1910
except IOError:
1911
logger.error(u"Could not write to file %r with PID %d",
1912
pidfilename, pid)
1913
except NameError:
1914
# "pidfile" was never created
1915
pass
3379
1916
del pidfilename
3380
3381
for termsig in (signal.SIGHUP, signal.SIGTERM):
3382
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3383
lambda: main_loop.quit() and False)
3384
1917
1918
signal.signal(signal.SIGINT, signal.SIG_IGN)
1919
1920
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1921
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1922
3385
1923
if use_dbus:
3386
3387
@alternate_dbus_interfaces(
3388
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3389
class MandosDBusService(DBusObjectWithObjectManager):
1924
class MandosDBusService(dbus.service.Object):
3390
1925
"""A D-Bus proxy object"""
3391
3392
1926
def __init__(self):
3393
dbus.service.Object.__init__(self, bus, "/")
3394
3395
_interface = "se.recompile.Mandos"
3396
3397
@dbus.service.signal(_interface, signature="o")
1927
dbus.service.Object.__init__(self, bus, u"/")
1928
_interface = u"se.bsnet.fukt.Mandos"
1929
1930
@dbus.service.signal(_interface, signature=u"o")
3398
1931
def ClientAdded(self, objpath):
3399
1932
"D-Bus signal"
3400
1933
pass
3401
3402
@dbus.service.signal(_interface, signature="ss")
3403
def ClientNotFound(self, key_id, address):
1934
1935
@dbus.service.signal(_interface, signature=u"ss")
1936
def ClientNotFound(self, fingerprint, address):
3404
1937
"D-Bus signal"
3405
1938
pass
3406
3407
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3408
"true"})
3409
@dbus.service.signal(_interface, signature="os")
1939
1940
@dbus.service.signal(_interface, signature=u"os")
3410
1941
def ClientRemoved(self, objpath, name):
3411
1942
"D-Bus signal"
3412
1943
pass
3413
3414
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3415
"true"})
3416
@dbus.service.method(_interface, out_signature="ao")
1944
1945
@dbus.service.method(_interface, out_signature=u"ao")
3417
1946
def GetAllClients(self):
3418
1947
"D-Bus method"
3419
return dbus.Array(c.dbus_object_path for c in
3420
tcp_server.clients.values())
3421
3422
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3423
"true"})
1948
return dbus.Array(c.dbus_object_path
1949
for c in tcp_server.clients)
1950
3424
1951
@dbus.service.method(_interface,
3425
out_signature="a{oa{sv}}")
1952
out_signature=u"a{oa{sv}}")
3426
1953
def GetAllClientsWithProperties(self):
3427
1954
"D-Bus method"
3428
1955
return dbus.Dictionary(
3429
{c.dbus_object_path: c.GetAll(
3430
"se.recompile.Mandos.Client")
3431
for c in tcp_server.clients.values()},
3432
signature="oa{sv}")
3433
3434
@dbus.service.method(_interface, in_signature="o")
1956
((c.dbus_object_path, c.GetAll(u""))
1957
for c in tcp_server.clients),
1958
signature=u"oa{sv}")
1959
1960
@dbus.service.method(_interface, in_signature=u"o")
3435
1961
def RemoveClient(self, object_path):
3436
1962
"D-Bus method"
3437
for c in tcp_server.clients.values():
1963
for c in tcp_server.clients:
3438
1964
if c.dbus_object_path == object_path:
3439
del tcp_server.clients[c.name]
1965
tcp_server.clients.remove(c)
3440
1966
c.remove_from_connection()
3441
# Don't signal the disabling
1967
# Don't signal anything except ClientRemoved
3442
1968
c.disable(quiet=True)
3443
# Emit D-Bus signal for removal
3444
self.client_removed_signal(c)
1969
# Emit D-Bus signal
1970
self.ClientRemoved(object_path, c.name)
3445
1971
return
3446
1972
raise KeyError(object_path)
3447
1973
3448
1974
del _interface
3449
3450
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3451
out_signature="a{oa{sa{sv}}}")
3452
def GetManagedObjects(self):
3453
"""D-Bus method"""
3454
return dbus.Dictionary(
3455
{client.dbus_object_path:
3456
dbus.Dictionary(
3457
{interface: client.GetAll(interface)
3458
for interface in
3459
client._get_all_interface_names()})
3460
for client in tcp_server.clients.values()})
3461
3462
def client_added_signal(self, client):
3463
"""Send the new standard signal and the old signal"""
3464
if use_dbus:
3465
# New standard signal
3466
self.InterfacesAdded(
3467
client.dbus_object_path,
3468
dbus.Dictionary(
3469
{interface: client.GetAll(interface)
3470
for interface in
3471
client._get_all_interface_names()}))
3472
# Old signal
3473
self.ClientAdded(client.dbus_object_path)
3474
3475
def client_removed_signal(self, client):
3476
"""Send the new standard signal and the old signal"""
3477
if use_dbus:
3478
# New standard signal
3479
self.InterfacesRemoved(
3480
client.dbus_object_path,
3481
client._get_all_interface_names())
3482
# Old signal
3483
self.ClientRemoved(client.dbus_object_path,
3484
client.name)
3485
1975
3486
1976
mandos_dbus_service = MandosDBusService()
3487
3488
# Save modules to variables to exempt the modules from being
3489
# unloaded before the function registered with atexit() is run.
3490
mp = multiprocessing
3491
wn = wnull
3492
1977
3493
1978
def cleanup():
3494
1979
"Cleanup function; run on exit"
3495
if zeroconf:
3496
service.cleanup()
3497
3498
mp.active_children()
3499
wn.close()
3500
if not (tcp_server.clients or client_settings):
3501
return
3502
3503
# Store client before exiting. Secrets are encrypted with key
3504
# based on what config file has. If config file is
3505
# removed/edited, old secret will thus be unrecovable.
3506
clients = {}
3507
with PGPEngine() as pgp:
3508
for client in tcp_server.clients.values():
3509
key = client_settings[client.name]["secret"]
3510
client.encrypted_secret = pgp.encrypt(client.secret,
3511
key)
3512
client_dict = {}
3513
3514
# A list of attributes that can not be pickled
3515
# + secret.
3516
exclude = {"bus", "changedstate", "secret",
3517
"checker", "server_settings"}
3518
for name, typ in inspect.getmembers(dbus.service
3519
.Object):
3520
exclude.add(name)
3521
3522
client_dict["encrypted_secret"] = (client
3523
.encrypted_secret)
3524
for attr in client.client_structure:
3525
if attr not in exclude:
3526
client_dict[attr] = getattr(client, attr)
3527
3528
clients[client.name] = client_dict
3529
del client_settings[client.name]["secret"]
3530
3531
try:
3532
with tempfile.NamedTemporaryFile(
3533
mode='wb',
3534
suffix=".pickle",
3535
prefix='clients-',
3536
dir=os.path.dirname(stored_state_path),
3537
delete=False) as stored_state:
3538
pickle.dump((clients, client_settings), stored_state,
3539
protocol=2)
3540
tempname = stored_state.name
3541
os.rename(tempname, stored_state_path)
3542
except (IOError, OSError) as e:
3543
if not debug:
3544
try:
3545
os.remove(tempname)
3546
except NameError:
3547
pass
3548
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3549
logger.warning("Could not save persistent state: {}"
3550
.format(os.strerror(e.errno)))
3551
else:
3552
logger.warning("Could not save persistent state:",
3553
exc_info=e)
3554
raise
3555
3556
# Delete all clients, and settings from config
1980
service.cleanup()
1981
3557
1982
while tcp_server.clients:
3558
name, client = tcp_server.clients.popitem()
1983
client = tcp_server.clients.pop()
3559
1984
if use_dbus:
3560
1985
client.remove_from_connection()
3561
# Don't signal the disabling
1986
client.disable_hook = None
1987
# Don't signal anything except ClientRemoved
3562
1988
client.disable(quiet=True)
3563
# Emit D-Bus signal for removal
3564
1989
if use_dbus:
3565
mandos_dbus_service.client_removed_signal(client)
3566
client_settings.clear()
3567
1990
# Emit D-Bus signal
1991
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
1992
client.name)
1993
3568
1994
atexit.register(cleanup)
3569
3570
for client in tcp_server.clients.values():
1995
1996
for client in tcp_server.clients:
3571
1997
if use_dbus:
3572
# Emit D-Bus signal for adding
3573
mandos_dbus_service.client_added_signal(client)
3574
# Need to initiate checking of clients
3575
if client.enabled:
3576
client.init_checker()
3577
1998
# Emit D-Bus signal
1999
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2000
client.enable()
2001
3578
2002
tcp_server.enable()
3579
2003
tcp_server.server_activate()
3580
2004
3581
2005
# Find out what port we got
3582
if zeroconf:
3583
service.port = tcp_server.socket.getsockname()[1]
2006
service.port = tcp_server.socket.getsockname()[1]
3584
2007
if use_ipv6:
3585
logger.info("Now listening on address %r, port %d,"
3586
" flowinfo %d, scope_id %d",
3587
*tcp_server.socket.getsockname())
2008
logger.info(u"Now listening on address %r, port %d,"
2009
" flowinfo %d, scope_id %d"
2010
% tcp_server.socket.getsockname())
3588
2011
else: # IPv4
3589
logger.info("Now listening on address %r, port %d",
3590
*tcp_server.socket.getsockname())
3591
3592
# service.interface = tcp_server.socket.getsockname()[3]
3593
2012
logger.info(u"Now listening on address %r, port %d"
2013
% tcp_server.socket.getsockname())
2014
2015
#service.interface = tcp_server.socket.getsockname()[3]
2016
3594
2017
try:
3595
if zeroconf:
3596
# From the Avahi example code
3597
try:
3598
service.activate()
3599
except dbus.exceptions.DBusException as error:
3600
logger.critical("D-Bus Exception", exc_info=error)
3601
cleanup()
3602
sys.exit(1)
3603
# End of Avahi example code
3604
3605
GLib.io_add_watch(
3606
GLib.IOChannel.unix_new(tcp_server.fileno()),
3607
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
3608
lambda *args, **kwargs: (tcp_server.handle_request
3609
(*args[2:], **kwargs) or True))
3610
3611
logger.debug("Starting main loop")
2018
# From the Avahi example code
2019
try:
2020
service.activate()
2021
except dbus.exceptions.DBusException, error:
2022
logger.critical(u"DBusException: %s", error)
2023
cleanup()
2024
sys.exit(1)
2025
# End of Avahi example code
2026
2027
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2028
lambda *args, **kwargs:
2029
(tcp_server.handle_request
2030
(*args[2:], **kwargs) or True))
2031
2032
logger.debug(u"Starting main loop")
3612
2033
main_loop.run()
3613
except AvahiError as error:
3614
logger.critical("Avahi Error", exc_info=error)
2034
except AvahiError, error:
2035
logger.critical(u"AvahiError: %s", error)
3615
2036
cleanup()
3616
2037
sys.exit(1)
3617
2038
except KeyboardInterrupt:
3618
2039
if debug:
3619
print("", file=sys.stderr)
3620
logger.debug("Server received KeyboardInterrupt")
3621
logger.debug("Server exiting")
2040
print >> sys.stderr
2041
logger.debug(u"Server received KeyboardInterrupt")
2042
logger.debug(u"Server exiting")
3622
2043
# Must run before the D-Bus bus name gets deregistered
3623
2044
cleanup()
3624
2045
3625
3626
def should_only_run_tests():
3627
parser = argparse.ArgumentParser(add_help=False)
3628
parser.add_argument("--check", action='store_true')
3629
args, unknown_args = parser.parse_known_args()
3630
run_tests = args.check
3631
if run_tests:
3632
# Remove --check argument from sys.argv
3633
sys.argv[1:] = unknown_args
3634
return run_tests
3635
3636
# Add all tests from doctest strings
3637
def load_tests(loader, tests, none):
3638
import doctest
3639
tests.addTests(doctest.DocTestSuite())
3640
return tests
3641
3642
2046
if __name__ == '__main__':
3643
try:
3644
if should_only_run_tests():
3645
# Call using ./mandos --check [--verbose]
3646
unittest.main()
3647
else:
3648
main()
3649
finally:
3650
logging.shutdown()
2047
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0