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- Committer: Teddy Hogeborn
- Date: 2010-03-27 18:50:53 UTC
- mfrom: (24.1.146 mandos)
- mto: (237.12.2 mandos-persistent) (24.1.149 mandos) (299.1.1 release) (300.1.1 release) (301.1.1 release)
- mto: This revision was merged to the branch mainline in revision 270.
- Revision ID: teddy@fukt.bsnet.se-20100327185053-ht5xs10afawgx0sq
Merge from Björn.
- files added:
- initramfs-tools-hook-conf
- files removed:
- DBUS-API
- debian/source
- debian/tests
- debian/upstream
- dracut-module
- network-hooks.d
- plugin-helpers
- files modified:
- .bzrignore
added
removed
mandos
1
1
#!/usr/bin/python
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
#
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 © 2008,2009 Teddy Hogeborn
15
# Copyright © 2008,2009 Björn Påhlsson
16
#
17
# This program is free software: you can redistribute it and/or modify
18
# it under the terms of the GNU General Public License as published by
21
19
# the Free Software Foundation, either version 3 of the License, or
22
20
# (at your option) any later version.
23
21
#
24
# Mandos is distributed in the hope that it will be useful, but
25
# WITHOUT ANY WARRANTY; without even the implied warranty of
22
# This program is distributed in the hope that it will be useful,
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
26
24
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
27
25
# GNU General Public License for more details.
28
#
26
#
29
27
# You should have received a copy of the GNU General Public License
30
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
31
#
32
# Contact the authors at <mandos@recompile.se>.
33
#
34
35
from __future__ import (division, absolute_import, print_function,
36
unicode_literals)
37
38
try:
39
from future_builtins import *
40
except ImportError:
41
pass
42
43
try:
44
import SocketServer as socketserver
45
except ImportError:
46
import socketserver
28
# along with this program. If not, see
29
# <http://www.gnu.org/licenses/>.
30
#
31
# Contact the authors at <mandos@fukt.bsnet.se>.
32
#
33
34
from __future__ import division, with_statement, absolute_import
35
36
import SocketServer as socketserver
47
37
import socket
48
import argparse
38
import optparse
49
39
import datetime
50
40
import errno
51
try:
52
import ConfigParser as configparser
53
except ImportError:
54
import configparser
41
import gnutls.crypto
42
import gnutls.connection
43
import gnutls.errors
44
import gnutls.library.functions
45
import gnutls.library.constants
46
import gnutls.library.types
47
import ConfigParser as configparser
55
48
import sys
56
49
import re
57
50
import os
66
59
import struct
67
60
import fcntl
68
61
import functools
69
try:
70
import cPickle as pickle
71
except ImportError:
72
import pickle
73
import multiprocessing
74
import types
75
import binascii
76
import tempfile
77
import itertools
78
import collections
79
import codecs
80
import unittest
62
import cPickle as pickle
81
63
82
64
import dbus
83
65
import dbus.service
84
import gi
85
from gi.repository import GLib
66
import gobject
67
import avahi
86
68
from dbus.mainloop.glib import DBusGMainLoop
87
69
import ctypes
88
70
import ctypes.util
89
71
import xml.dom.minidom
90
72
import inspect
91
73
92
if sys.version_info.major == 2:
93
__metaclass__ = type
94
95
# Show warnings by default
96
if not sys.warnoptions:
97
import warnings
98
warnings.simplefilter("default")
99
100
# Try to find the value of SO_BINDTODEVICE:
101
74
try:
102
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
103
# newer, and it is also the most natural place for it:
104
75
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
105
76
except AttributeError:
106
77
try:
107
# This is where SO_BINDTODEVICE was up to and including Python
108
# 2.6, and also 3.2:
109
78
from IN import SO_BINDTODEVICE
110
79
except ImportError:
111
# In Python 2.7 it seems to have been removed entirely.
112
# Try running the C preprocessor:
113
try:
114
cc = subprocess.Popen(["cc", "--language=c", "-E",
115
"/dev/stdin"],
116
stdin=subprocess.PIPE,
117
stdout=subprocess.PIPE)
118
stdout = cc.communicate(
119
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
120
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
121
except (OSError, ValueError, IndexError):
122
# No value found
123
SO_BINDTODEVICE = None
124
125
if sys.version_info.major == 2:
126
str = unicode
127
128
if sys.version_info < (3, 2):
129
configparser.Configparser = configparser.SafeConfigParser
130
131
version = "1.8.8"
132
stored_state_file = "clients.pickle"
133
134
logger = logging.getLogger()
135
logging.captureWarnings(True) # Show warnings via the logging system
136
syslogger = None
137
138
try:
139
if_nametoindex = ctypes.cdll.LoadLibrary(
140
ctypes.util.find_library("c")).if_nametoindex
141
except (OSError, AttributeError):
142
143
def if_nametoindex(interface):
144
"Get an interface index the hard way, i.e. using fcntl()"
145
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
146
with contextlib.closing(socket.socket()) as s:
147
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
148
struct.pack(b"16s16x", interface))
149
interface_index = struct.unpack("I", ifreq[16:20])[0]
150
return interface_index
151
152
153
def copy_function(func):
154
"""Make a copy of a function"""
155
if sys.version_info.major == 2:
156
return types.FunctionType(func.func_code,
157
func.func_globals,
158
func.func_name,
159
func.func_defaults,
160
func.func_closure)
161
else:
162
return types.FunctionType(func.__code__,
163
func.__globals__,
164
func.__name__,
165
func.__defaults__,
166
func.__closure__)
167
168
169
def initlogger(debug, level=logging.WARNING):
170
"""init logger and add loglevel"""
171
172
global syslogger
173
syslogger = (logging.handlers.SysLogHandler(
174
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
175
address="/dev/log"))
176
syslogger.setFormatter(logging.Formatter
177
('Mandos [%(process)d]: %(levelname)s:'
178
' %(message)s'))
179
logger.addHandler(syslogger)
180
181
if debug:
182
console = logging.StreamHandler()
183
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
184
' [%(process)d]:'
185
' %(levelname)s:'
186
' %(message)s'))
187
logger.addHandler(console)
188
logger.setLevel(level)
189
190
191
class PGPError(Exception):
192
"""Exception if encryption/decryption fails"""
193
pass
194
195
196
class PGPEngine:
197
"""A simple class for OpenPGP symmetric encryption & decryption"""
198
199
def __init__(self):
200
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
201
self.gpg = "gpg"
202
try:
203
output = subprocess.check_output(["gpgconf"])
204
for line in output.splitlines():
205
name, text, path = line.split(b":")
206
if name == "gpg":
207
self.gpg = path
208
break
209
except OSError as e:
210
if e.errno != errno.ENOENT:
211
raise
212
self.gnupgargs = ['--batch',
213
'--homedir', self.tempdir,
214
'--force-mdc',
215
'--quiet']
216
# Only GPG version 1 has the --no-use-agent option.
217
if self.gpg == "gpg" or self.gpg.endswith("/gpg"):
218
self.gnupgargs.append("--no-use-agent")
219
220
def __enter__(self):
221
return self
222
223
def __exit__(self, exc_type, exc_value, traceback):
224
self._cleanup()
225
return False
226
227
def __del__(self):
228
self._cleanup()
229
230
def _cleanup(self):
231
if self.tempdir is not None:
232
# Delete contents of tempdir
233
for root, dirs, files in os.walk(self.tempdir,
234
topdown=False):
235
for filename in files:
236
os.remove(os.path.join(root, filename))
237
for dirname in dirs:
238
os.rmdir(os.path.join(root, dirname))
239
# Remove tempdir
240
os.rmdir(self.tempdir)
241
self.tempdir = None
242
243
def password_encode(self, password):
244
# Passphrase can not be empty and can not contain newlines or
245
# NUL bytes. So we prefix it and hex encode it.
246
encoded = b"mandos" + binascii.hexlify(password)
247
if len(encoded) > 2048:
248
# GnuPG can't handle long passwords, so encode differently
249
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
250
.replace(b"\n", b"\\n")
251
.replace(b"\0", b"\\x00"))
252
return encoded
253
254
def encrypt(self, data, password):
255
passphrase = self.password_encode(password)
256
with tempfile.NamedTemporaryFile(
257
dir=self.tempdir) as passfile:
258
passfile.write(passphrase)
259
passfile.flush()
260
proc = subprocess.Popen([self.gpg, '--symmetric',
261
'--passphrase-file',
262
passfile.name]
263
+ self.gnupgargs,
264
stdin=subprocess.PIPE,
265
stdout=subprocess.PIPE,
266
stderr=subprocess.PIPE)
267
ciphertext, err = proc.communicate(input=data)
268
if proc.returncode != 0:
269
raise PGPError(err)
270
return ciphertext
271
272
def decrypt(self, data, password):
273
passphrase = self.password_encode(password)
274
with tempfile.NamedTemporaryFile(
275
dir=self.tempdir) as passfile:
276
passfile.write(passphrase)
277
passfile.flush()
278
proc = subprocess.Popen([self.gpg, '--decrypt',
279
'--passphrase-file',
280
passfile.name]
281
+ self.gnupgargs,
282
stdin=subprocess.PIPE,
283
stdout=subprocess.PIPE,
284
stderr=subprocess.PIPE)
285
decrypted_plaintext, err = proc.communicate(input=data)
286
if proc.returncode != 0:
287
raise PGPError(err)
288
return decrypted_plaintext
289
290
291
# Pretend that we have an Avahi module
292
class avahi:
293
"""This isn't so much a class as it is a module-like namespace."""
294
IF_UNSPEC = -1 # avahi-common/address.h
295
PROTO_UNSPEC = -1 # avahi-common/address.h
296
PROTO_INET = 0 # avahi-common/address.h
297
PROTO_INET6 = 1 # avahi-common/address.h
298
DBUS_NAME = "org.freedesktop.Avahi"
299
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
300
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
301
DBUS_PATH_SERVER = "/"
302
303
@staticmethod
304
def string_array_to_txt_array(t):
305
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
306
for s in t), signature="ay")
307
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
308
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
309
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
310
SERVER_INVALID = 0 # avahi-common/defs.h
311
SERVER_REGISTERING = 1 # avahi-common/defs.h
312
SERVER_RUNNING = 2 # avahi-common/defs.h
313
SERVER_COLLISION = 3 # avahi-common/defs.h
314
SERVER_FAILURE = 4 # avahi-common/defs.h
315
80
SO_BINDTODEVICE = None
81
82
83
version = "1.0.14"
84
85
logger = logging.Logger(u'mandos')
86
syslogger = (logging.handlers.SysLogHandler
87
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
88
address = "/dev/log"))
89
syslogger.setFormatter(logging.Formatter
90
(u'Mandos [%(process)d]: %(levelname)s:'
91
u' %(message)s'))
92
logger.addHandler(syslogger)
93
94
console = logging.StreamHandler()
95
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
96
u' %(levelname)s:'
97
u' %(message)s'))
98
logger.addHandler(console)
316
99
317
100
class AvahiError(Exception):
318
101
def __init__(self, value, *args, **kwargs):
319
102
self.value = value
320
return super(AvahiError, self).__init__(value, *args,
321
**kwargs)
322
103
super(AvahiError, self).__init__(value, *args, **kwargs)
104
def __unicode__(self):
105
return unicode(repr(self.value))
323
106
324
107
class AvahiServiceError(AvahiError):
325
108
pass
326
109
327
328
110
class AvahiGroupError(AvahiError):
329
111
pass
330
112
331
113
332
class AvahiService:
114
class AvahiService(object):
333
115
"""An Avahi (Zeroconf) service.
334
116
335
117
Attributes:
336
118
interface: integer; avahi.IF_UNSPEC or an interface index.
337
119
Used to optionally bind to the specified interface.
338
name: string; Example: 'Mandos'
339
type: string; Example: '_mandos._tcp'.
340
See <https://www.iana.org/assignments/service-names-port-numbers>
120
name: string; Example: u'Mandos'
121
type: string; Example: u'_mandos._tcp'.
122
See <http://www.dns-sd.org/ServiceTypes.html>
341
123
port: integer; what port to announce
342
124
TXT: list of strings; TXT record for the service
343
125
domain: string; Domain to publish on, default to .local if empty.
349
131
server: D-Bus Server
350
132
bus: dbus.SystemBus()
351
133
"""
352
353
def __init__(self,
354
interface=avahi.IF_UNSPEC,
355
name=None,
356
servicetype=None,
357
port=None,
358
TXT=None,
359
domain="",
360
host="",
361
max_renames=32768,
362
protocol=avahi.PROTO_UNSPEC,
363
bus=None):
134
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
135
servicetype = None, port = None, TXT = None,
136
domain = u"", host = u"", max_renames = 32768,
137
protocol = avahi.PROTO_UNSPEC, bus = None):
364
138
self.interface = interface
365
139
self.name = name
366
140
self.type = servicetype
374
148
self.group = None # our entry group
375
149
self.server = None
376
150
self.bus = bus
377
self.entry_group_state_changed_match = None
378
379
def rename(self, remove=True):
151
def rename(self):
380
152
"""Derived from the Avahi example code"""
381
153
if self.rename_count >= self.max_renames:
382
logger.critical("No suitable Zeroconf service name found"
383
" after %i retries, exiting.",
154
logger.critical(u"No suitable Zeroconf service name found"
155
u" after %i retries, exiting.",
384
156
self.rename_count)
385
raise AvahiServiceError("Too many renames")
386
self.name = str(
387
self.server.GetAlternativeServiceName(self.name))
157
raise AvahiServiceError(u"Too many renames")
158
self.name = self.server.GetAlternativeServiceName(self.name)
159
logger.info(u"Changing Zeroconf service name to %r ...",
160
unicode(self.name))
161
syslogger.setFormatter(logging.Formatter
162
(u'Mandos (%s) [%%(process)d]:'
163
u' %%(levelname)s: %%(message)s'
164
% self.name))
165
self.remove()
166
self.add()
388
167
self.rename_count += 1
389
logger.info("Changing Zeroconf service name to %r ...",
390
self.name)
391
if remove:
392
self.remove()
393
try:
394
self.add()
395
except dbus.exceptions.DBusException as error:
396
if (error.get_dbus_name()
397
== "org.freedesktop.Avahi.CollisionError"):
398
logger.info("Local Zeroconf service name collision.")
399
return self.rename(remove=False)
400
else:
401
logger.critical("D-Bus Exception", exc_info=error)
402
self.cleanup()
403
os._exit(1)
404
405
168
def remove(self):
406
169
"""Derived from the Avahi example code"""
407
if self.entry_group_state_changed_match is not None:
408
self.entry_group_state_changed_match.remove()
409
self.entry_group_state_changed_match = None
410
170
if self.group is not None:
411
171
self.group.Reset()
412
413
172
def add(self):
414
173
"""Derived from the Avahi example code"""
415
self.remove()
416
174
if self.group is None:
417
175
self.group = dbus.Interface(
418
176
self.bus.get_object(avahi.DBUS_NAME,
419
177
self.server.EntryGroupNew()),
420
178
avahi.DBUS_INTERFACE_ENTRY_GROUP)
421
self.entry_group_state_changed_match = (
422
self.group.connect_to_signal(
423
'StateChanged', self.entry_group_state_changed))
424
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
179
self.group.connect_to_signal('StateChanged',
180
self
181
.entry_group_state_changed)
182
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
425
183
self.name, self.type)
426
184
self.group.AddService(
427
185
self.interface,
432
190
dbus.UInt16(self.port),
433
191
avahi.string_array_to_txt_array(self.TXT))
434
192
self.group.Commit()
435
436
193
def entry_group_state_changed(self, state, error):
437
194
"""Derived from the Avahi example code"""
438
logger.debug("Avahi entry group state change: %i", state)
439
195
logger.debug(u"Avahi state change: %i", state)
196
440
197
if state == avahi.ENTRY_GROUP_ESTABLISHED:
441
logger.debug("Zeroconf service established.")
198
logger.debug(u"Zeroconf service established.")
442
199
elif state == avahi.ENTRY_GROUP_COLLISION:
443
logger.info("Zeroconf service name collision.")
200
logger.warning(u"Zeroconf service name collision.")
444
201
self.rename()
445
202
elif state == avahi.ENTRY_GROUP_FAILURE:
446
logger.critical("Avahi: Error in group state changed %s",
447
str(error))
448
raise AvahiGroupError("State changed: {!s}".format(error))
449
203
logger.critical(u"Avahi: Error in group state changed %s",
204
unicode(error))
205
raise AvahiGroupError(u"State changed: %s"
206
% unicode(error))
450
207
def cleanup(self):
451
208
"""Derived from the Avahi example code"""
452
209
if self.group is not None:
453
try:
454
self.group.Free()
455
except (dbus.exceptions.UnknownMethodException,
456
dbus.exceptions.DBusException):
457
pass
210
self.group.Free()
458
211
self.group = None
459
self.remove()
460
461
def server_state_changed(self, state, error=None):
212
def server_state_changed(self, state):
462
213
"""Derived from the Avahi example code"""
463
logger.debug("Avahi server state change: %i", state)
464
bad_states = {
465
avahi.SERVER_INVALID: "Zeroconf server invalid",
466
avahi.SERVER_REGISTERING: None,
467
avahi.SERVER_COLLISION: "Zeroconf server name collision",
468
avahi.SERVER_FAILURE: "Zeroconf server failure",
469
}
470
if state in bad_states:
471
if bad_states[state] is not None:
472
if error is None:
473
logger.error(bad_states[state])
474
else:
475
logger.error(bad_states[state] + ": %r", error)
476
self.cleanup()
214
if state == avahi.SERVER_COLLISION:
215
logger.error(u"Zeroconf server name collision")
216
self.remove()
477
217
elif state == avahi.SERVER_RUNNING:
478
try:
479
self.add()
480
except dbus.exceptions.DBusException as error:
481
if (error.get_dbus_name()
482
== "org.freedesktop.Avahi.CollisionError"):
483
logger.info("Local Zeroconf service name"
484
" collision.")
485
return self.rename(remove=False)
486
else:
487
logger.critical("D-Bus Exception", exc_info=error)
488
self.cleanup()
489
os._exit(1)
490
else:
491
if error is None:
492
logger.debug("Unknown state: %r", state)
493
else:
494
logger.debug("Unknown state: %r: %r", state, error)
495
218
self.add()
496
219
def activate(self):
497
220
"""Derived from the Avahi example code"""
498
221
if self.server is None:
499
222
self.server = dbus.Interface(
500
223
self.bus.get_object(avahi.DBUS_NAME,
501
avahi.DBUS_PATH_SERVER,
502
follow_name_owner_changes=True),
224
avahi.DBUS_PATH_SERVER),
503
225
avahi.DBUS_INTERFACE_SERVER)
504
self.server.connect_to_signal("StateChanged",
505
self.server_state_changed)
226
self.server.connect_to_signal(u"StateChanged",
227
self.server_state_changed)
506
228
self.server_state_changed(self.server.GetState())
507
229
508
230
509
class AvahiServiceToSyslog(AvahiService):
510
def rename(self, *args, **kwargs):
511
"""Add the new name to the syslog messages"""
512
ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
513
syslogger.setFormatter(logging.Formatter(
514
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
515
.format(self.name)))
516
return ret
517
518
519
# Pretend that we have a GnuTLS module
520
class gnutls:
521
"""This isn't so much a class as it is a module-like namespace."""
522
523
library = ctypes.util.find_library("gnutls")
524
if library is None:
525
library = ctypes.util.find_library("gnutls-deb0")
526
_library = ctypes.cdll.LoadLibrary(library)
527
del library
528
529
# Unless otherwise indicated, the constants and types below are
530
# all from the gnutls/gnutls.h C header file.
531
532
# Constants
533
E_SUCCESS = 0
534
E_INTERRUPTED = -52
535
E_AGAIN = -28
536
CRT_OPENPGP = 2
537
CRT_RAWPK = 3
538
CLIENT = 2
539
SHUT_RDWR = 0
540
CRD_CERTIFICATE = 1
541
E_NO_CERTIFICATE_FOUND = -49
542
X509_FMT_DER = 0
543
NO_TICKETS = 1<<10
544
ENABLE_RAWPK = 1<<18
545
CTYPE_PEERS = 3
546
KEYID_USE_SHA256 = 1 # gnutls/x509.h
547
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
548
549
# Types
550
class session_int(ctypes.Structure):
551
_fields_ = []
552
session_t = ctypes.POINTER(session_int)
553
554
class certificate_credentials_st(ctypes.Structure):
555
_fields_ = []
556
certificate_credentials_t = ctypes.POINTER(
557
certificate_credentials_st)
558
certificate_type_t = ctypes.c_int
559
560
class datum_t(ctypes.Structure):
561
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
562
('size', ctypes.c_uint)]
563
564
class openpgp_crt_int(ctypes.Structure):
565
_fields_ = []
566
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
567
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
568
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
569
credentials_type_t = ctypes.c_int
570
transport_ptr_t = ctypes.c_void_p
571
close_request_t = ctypes.c_int
572
573
# Exceptions
574
class Error(Exception):
575
def __init__(self, message=None, code=None, args=()):
576
# Default usage is by a message string, but if a return
577
# code is passed, convert it to a string with
578
# gnutls.strerror()
579
self.code = code
580
if message is None and code is not None:
581
message = gnutls.strerror(code)
582
return super(gnutls.Error, self).__init__(
583
message, *args)
584
585
class CertificateSecurityError(Error):
586
pass
587
588
# Classes
589
class Credentials:
590
def __init__(self):
591
self._c_object = gnutls.certificate_credentials_t()
592
gnutls.certificate_allocate_credentials(
593
ctypes.byref(self._c_object))
594
self.type = gnutls.CRD_CERTIFICATE
595
596
def __del__(self):
597
gnutls.certificate_free_credentials(self._c_object)
598
599
class ClientSession:
600
def __init__(self, socket, credentials=None):
601
self._c_object = gnutls.session_t()
602
gnutls_flags = gnutls.CLIENT
603
if gnutls.check_version(b"3.5.6"):
604
gnutls_flags |= gnutls.NO_TICKETS
605
if gnutls.has_rawpk:
606
gnutls_flags |= gnutls.ENABLE_RAWPK
607
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
608
del gnutls_flags
609
gnutls.set_default_priority(self._c_object)
610
gnutls.transport_set_ptr(self._c_object, socket.fileno())
611
gnutls.handshake_set_private_extensions(self._c_object,
612
True)
613
self.socket = socket
614
if credentials is None:
615
credentials = gnutls.Credentials()
616
gnutls.credentials_set(self._c_object, credentials.type,
617
ctypes.cast(credentials._c_object,
618
ctypes.c_void_p))
619
self.credentials = credentials
620
621
def __del__(self):
622
gnutls.deinit(self._c_object)
623
624
def handshake(self):
625
return gnutls.handshake(self._c_object)
626
627
def send(self, data):
628
data = bytes(data)
629
data_len = len(data)
630
while data_len > 0:
631
data_len -= gnutls.record_send(self._c_object,
632
data[-data_len:],
633
data_len)
634
635
def bye(self):
636
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
637
638
# Error handling functions
639
def _error_code(result):
640
"""A function to raise exceptions on errors, suitable
641
for the 'restype' attribute on ctypes functions"""
642
if result >= 0:
643
return result
644
if result == gnutls.E_NO_CERTIFICATE_FOUND:
645
raise gnutls.CertificateSecurityError(code=result)
646
raise gnutls.Error(code=result)
647
648
def _retry_on_error(result, func, arguments):
649
"""A function to retry on some errors, suitable
650
for the 'errcheck' attribute on ctypes functions"""
651
while result < 0:
652
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
653
return _error_code(result)
654
result = func(*arguments)
655
return result
656
657
# Unless otherwise indicated, the function declarations below are
658
# all from the gnutls/gnutls.h C header file.
659
660
# Functions
661
priority_set_direct = _library.gnutls_priority_set_direct
662
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
663
ctypes.POINTER(ctypes.c_char_p)]
664
priority_set_direct.restype = _error_code
665
666
init = _library.gnutls_init
667
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
668
init.restype = _error_code
669
670
set_default_priority = _library.gnutls_set_default_priority
671
set_default_priority.argtypes = [session_t]
672
set_default_priority.restype = _error_code
673
674
record_send = _library.gnutls_record_send
675
record_send.argtypes = [session_t, ctypes.c_void_p,
676
ctypes.c_size_t]
677
record_send.restype = ctypes.c_ssize_t
678
record_send.errcheck = _retry_on_error
679
680
certificate_allocate_credentials = (
681
_library.gnutls_certificate_allocate_credentials)
682
certificate_allocate_credentials.argtypes = [
683
ctypes.POINTER(certificate_credentials_t)]
684
certificate_allocate_credentials.restype = _error_code
685
686
certificate_free_credentials = (
687
_library.gnutls_certificate_free_credentials)
688
certificate_free_credentials.argtypes = [
689
certificate_credentials_t]
690
certificate_free_credentials.restype = None
691
692
handshake_set_private_extensions = (
693
_library.gnutls_handshake_set_private_extensions)
694
handshake_set_private_extensions.argtypes = [session_t,
695
ctypes.c_int]
696
handshake_set_private_extensions.restype = None
697
698
credentials_set = _library.gnutls_credentials_set
699
credentials_set.argtypes = [session_t, credentials_type_t,
700
ctypes.c_void_p]
701
credentials_set.restype = _error_code
702
703
strerror = _library.gnutls_strerror
704
strerror.argtypes = [ctypes.c_int]
705
strerror.restype = ctypes.c_char_p
706
707
certificate_type_get = _library.gnutls_certificate_type_get
708
certificate_type_get.argtypes = [session_t]
709
certificate_type_get.restype = _error_code
710
711
certificate_get_peers = _library.gnutls_certificate_get_peers
712
certificate_get_peers.argtypes = [session_t,
713
ctypes.POINTER(ctypes.c_uint)]
714
certificate_get_peers.restype = ctypes.POINTER(datum_t)
715
716
global_set_log_level = _library.gnutls_global_set_log_level
717
global_set_log_level.argtypes = [ctypes.c_int]
718
global_set_log_level.restype = None
719
720
global_set_log_function = _library.gnutls_global_set_log_function
721
global_set_log_function.argtypes = [log_func]
722
global_set_log_function.restype = None
723
724
deinit = _library.gnutls_deinit
725
deinit.argtypes = [session_t]
726
deinit.restype = None
727
728
handshake = _library.gnutls_handshake
729
handshake.argtypes = [session_t]
730
handshake.restype = _error_code
731
handshake.errcheck = _retry_on_error
732
733
transport_set_ptr = _library.gnutls_transport_set_ptr
734
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
735
transport_set_ptr.restype = None
736
737
bye = _library.gnutls_bye
738
bye.argtypes = [session_t, close_request_t]
739
bye.restype = _error_code
740
bye.errcheck = _retry_on_error
741
742
check_version = _library.gnutls_check_version
743
check_version.argtypes = [ctypes.c_char_p]
744
check_version.restype = ctypes.c_char_p
745
746
_need_version = b"3.3.0"
747
if check_version(_need_version) is None:
748
raise self.Error("Needs GnuTLS {} or later"
749
.format(_need_version))
750
751
_tls_rawpk_version = b"3.6.6"
752
has_rawpk = bool(check_version(_tls_rawpk_version))
753
754
if has_rawpk:
755
# Types
756
class pubkey_st(ctypes.Structure):
757
_fields = []
758
pubkey_t = ctypes.POINTER(pubkey_st)
759
760
x509_crt_fmt_t = ctypes.c_int
761
762
# All the function declarations below are from gnutls/abstract.h
763
pubkey_init = _library.gnutls_pubkey_init
764
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
765
pubkey_init.restype = _error_code
766
767
pubkey_import = _library.gnutls_pubkey_import
768
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
769
x509_crt_fmt_t]
770
pubkey_import.restype = _error_code
771
772
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
773
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
774
ctypes.POINTER(ctypes.c_ubyte),
775
ctypes.POINTER(ctypes.c_size_t)]
776
pubkey_get_key_id.restype = _error_code
777
778
pubkey_deinit = _library.gnutls_pubkey_deinit
779
pubkey_deinit.argtypes = [pubkey_t]
780
pubkey_deinit.restype = None
781
else:
782
# All the function declarations below are from gnutls/openpgp.h
783
784
openpgp_crt_init = _library.gnutls_openpgp_crt_init
785
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
786
openpgp_crt_init.restype = _error_code
787
788
openpgp_crt_import = _library.gnutls_openpgp_crt_import
789
openpgp_crt_import.argtypes = [openpgp_crt_t,
790
ctypes.POINTER(datum_t),
791
openpgp_crt_fmt_t]
792
openpgp_crt_import.restype = _error_code
793
794
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
795
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
796
ctypes.POINTER(ctypes.c_uint)]
797
openpgp_crt_verify_self.restype = _error_code
798
799
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
800
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
801
openpgp_crt_deinit.restype = None
802
803
openpgp_crt_get_fingerprint = (
804
_library.gnutls_openpgp_crt_get_fingerprint)
805
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
806
ctypes.c_void_p,
807
ctypes.POINTER(
808
ctypes.c_size_t)]
809
openpgp_crt_get_fingerprint.restype = _error_code
810
811
if check_version(b"3.6.4"):
812
certificate_type_get2 = _library.gnutls_certificate_type_get2
813
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
814
certificate_type_get2.restype = _error_code
815
816
# Remove non-public functions
817
del _error_code, _retry_on_error
818
819
820
def call_pipe(connection, # : multiprocessing.Connection
821
func, *args, **kwargs):
822
"""This function is meant to be called by multiprocessing.Process
823
824
This function runs func(*args, **kwargs), and writes the resulting
825
return value on the provided multiprocessing.Connection.
826
"""
827
connection.send(func(*args, **kwargs))
828
connection.close()
829
830
831
class Client:
231
class Client(object):
832
232
"""A representation of a client host served by this server.
833
233
834
234
Attributes:
835
approved: bool(); 'None' if not yet approved/disapproved
836
approval_delay: datetime.timedelta(); Time to wait for approval
837
approval_duration: datetime.timedelta(); Duration of one approval
838
checker: multiprocessing.Process(); a running checker process used
839
to see if the client lives. 'None' if no process is
840
running.
841
checker_callback_tag: a GLib event source tag, or None
842
checker_command: string; External command which is run to check
843
if client lives. %() expansions are done at
844
runtime with vars(self) as dict, so that for
845
instance %(name)s can be used in the command.
846
checker_initiator_tag: a GLib event source tag, or None
235
name: string; from the config file, used in log messages and
236
D-Bus identifiers
237
fingerprint: string (40 or 32 hexadecimal digits); used to
238
uniquely identify the client
239
secret: bytestring; sent verbatim (over TLS) to client
240
host: string; available for use by the checker command
847
241
created: datetime.datetime(); (UTC) object creation
848
client_structure: Object describing what attributes a client has
849
and is used for storing the client at exit
850
current_checker_command: string; current running checker_command
851
disable_initiator_tag: a GLib event source tag, or None
242
last_enabled: datetime.datetime(); (UTC)
852
243
enabled: bool()
853
fingerprint: string (40 or 32 hexadecimal digits); used to
854
uniquely identify an OpenPGP client
855
key_id: string (64 hexadecimal digits); used to uniquely identify
856
a client using raw public keys
857
host: string; available for use by the checker command
858
interval: datetime.timedelta(); How often to start a new checker
859
last_approval_request: datetime.datetime(); (UTC) or None
860
244
last_checked_ok: datetime.datetime(); (UTC) or None
861
last_checker_status: integer between 0 and 255 reflecting exit
862
status of last checker. -1 reflects crashed
863
checker, -2 means no checker completed yet.
864
last_checker_signal: The signal which killed the last checker, if
865
last_checker_status is -1
866
last_enabled: datetime.datetime(); (UTC) or None
867
name: string; from the config file, used in log messages and
868
D-Bus identifiers
869
secret: bytestring; sent verbatim (over TLS) to client
870
245
timeout: datetime.timedelta(); How long from last_checked_ok
871
246
until this client is disabled
872
extended_timeout: extra long timeout when secret has been sent
873
runtime_expansions: Allowed attributes for runtime expansion.
874
expires: datetime.datetime(); time (UTC) when a client will be
875
disabled, or None
876
server_settings: The server_settings dict from main()
247
interval: datetime.timedelta(); How often to start a new checker
248
disable_hook: If set, called by disable() as disable_hook(self)
249
checker: subprocess.Popen(); a running checker process used
250
to see if the client lives.
251
'None' if no process is running.
252
checker_initiator_tag: a gobject event source tag, or None
253
disable_initiator_tag: - '' -
254
checker_callback_tag: - '' -
255
checker_command: string; External command which is run to check if
256
client lives. %() expansions are done at
257
runtime with vars(self) as dict, so that for
258
instance %(name)s can be used in the command.
259
current_checker_command: string; current running checker_command
877
260
"""
878
879
runtime_expansions = ("approval_delay", "approval_duration",
880
"created", "enabled", "expires", "key_id",
881
"fingerprint", "host", "interval",
882
"last_approval_request", "last_checked_ok",
883
"last_enabled", "name", "timeout")
884
client_defaults = {
885
"timeout": "PT5M",
886
"extended_timeout": "PT15M",
887
"interval": "PT2M",
888
"checker": "fping -q -- %%(host)s",
889
"host": "",
890
"approval_delay": "PT0S",
891
"approval_duration": "PT1S",
892
"approved_by_default": "True",
893
"enabled": "True",
894
}
895
261
896
262
@staticmethod
897
def config_parser(config):
898
"""Construct a new dict of client settings of this form:
899
{ client_name: {setting_name: value, ...}, ...}
900
with exceptions for any special settings as defined above.
901
NOTE: Must be a pure function. Must return the same result
902
value given the same arguments.
903
"""
904
settings = {}
905
for client_name in config.sections():
906
section = dict(config.items(client_name))
907
client = settings[client_name] = {}
908
909
client["host"] = section["host"]
910
# Reformat values from string types to Python types
911
client["approved_by_default"] = config.getboolean(
912
client_name, "approved_by_default")
913
client["enabled"] = config.getboolean(client_name,
914
"enabled")
915
916
# Uppercase and remove spaces from key_id and fingerprint
917
# for later comparison purposes with return value from the
918
# key_id() and fingerprint() functions
919
client["key_id"] = (section.get("key_id", "").upper()
920
.replace(" ", ""))
921
client["fingerprint"] = (section["fingerprint"].upper()
922
.replace(" ", ""))
923
if "secret" in section:
924
client["secret"] = codecs.decode(section["secret"]
925
.encode("utf-8"),
926
"base64")
927
elif "secfile" in section:
928
with open(os.path.expanduser(os.path.expandvars
929
(section["secfile"])),
930
"rb") as secfile:
931
client["secret"] = secfile.read()
932
else:
933
raise TypeError("No secret or secfile for section {}"
934
.format(section))
935
client["timeout"] = string_to_delta(section["timeout"])
936
client["extended_timeout"] = string_to_delta(
937
section["extended_timeout"])
938
client["interval"] = string_to_delta(section["interval"])
939
client["approval_delay"] = string_to_delta(
940
section["approval_delay"])
941
client["approval_duration"] = string_to_delta(
942
section["approval_duration"])
943
client["checker_command"] = section["checker"]
944
client["last_approval_request"] = None
945
client["last_checked_ok"] = None
946
client["last_checker_status"] = -2
947
948
return settings
949
950
def __init__(self, settings, name=None, server_settings=None):
263
def _timedelta_to_milliseconds(td):
264
"Convert a datetime.timedelta() to milliseconds"
265
return ((td.days * 24 * 60 * 60 * 1000)
266
+ (td.seconds * 1000)
267
+ (td.microseconds // 1000))
268
269
def timeout_milliseconds(self):
270
"Return the 'timeout' attribute in milliseconds"
271
return self._timedelta_to_milliseconds(self.timeout)
272
273
def interval_milliseconds(self):
274
"Return the 'interval' attribute in milliseconds"
275
return self._timedelta_to_milliseconds(self.interval)
276
277
def __init__(self, name = None, disable_hook=None, config=None):
278
"""Note: the 'checker' key in 'config' sets the
279
'checker_command' attribute and *not* the 'checker'
280
attribute."""
951
281
self.name = name
952
if server_settings is None:
953
server_settings = {}
954
self.server_settings = server_settings
955
# adding all client settings
956
for setting, value in settings.items():
957
setattr(self, setting, value)
958
959
if self.enabled:
960
if not hasattr(self, "last_enabled"):
961
self.last_enabled = datetime.datetime.utcnow()
962
if not hasattr(self, "expires"):
963
self.expires = (datetime.datetime.utcnow()
964
+ self.timeout)
282
if config is None:
283
config = {}
284
logger.debug(u"Creating client %r", self.name)
285
# Uppercase and remove spaces from fingerprint for later
286
# comparison purposes with return value from the fingerprint()
287
# function
288
self.fingerprint = (config[u"fingerprint"].upper()
289
.replace(u" ", u""))
290
logger.debug(u" Fingerprint: %s", self.fingerprint)
291
if u"secret" in config:
292
self.secret = config[u"secret"].decode(u"base64")
293
elif u"secfile" in config:
294
with open(os.path.expanduser(os.path.expandvars
295
(config[u"secfile"])),
296
"rb") as secfile:
297
self.secret = secfile.read()
965
298
else:
966
self.last_enabled = None
967
self.expires = None
968
969
logger.debug("Creating client %r", self.name)
970
logger.debug(" Key ID: %s", self.key_id)
971
logger.debug(" Fingerprint: %s", self.fingerprint)
972
self.created = settings.get("created",
973
datetime.datetime.utcnow())
974
975
# attributes specific for this server instance
299
raise TypeError(u"No secret or secfile for client %s"
300
% self.name)
301
self.host = config.get(u"host", u"")
302
self.created = datetime.datetime.utcnow()
303
self.enabled = False
304
self.last_enabled = None
305
self.last_checked_ok = None
306
self.timeout = string_to_delta(config[u"timeout"])
307
self.interval = string_to_delta(config[u"interval"])
308
self.disable_hook = disable_hook
976
309
self.checker = None
977
310
self.checker_initiator_tag = None
978
311
self.disable_initiator_tag = None
979
312
self.checker_callback_tag = None
313
self.checker_command = config[u"checker"]
980
314
self.current_checker_command = None
981
self.approved = None
982
self.approvals_pending = 0
983
self.changedstate = multiprocessing_manager.Condition(
984
multiprocessing_manager.Lock())
985
self.client_structure = [attr
986
for attr in self.__dict__.keys()
987
if not attr.startswith("_")]
988
self.client_structure.append("client_structure")
989
990
for name, t in inspect.getmembers(
991
type(self), lambda obj: isinstance(obj, property)):
992
if not name.startswith("_"):
993
self.client_structure.append(name)
994
995
# Send notice to process children that client state has changed
996
def send_changedstate(self):
997
with self.changedstate:
998
self.changedstate.notify_all()
999
315
self.last_connect = None
316
1000
317
def enable(self):
1001
318
"""Start this client's checker and timeout hooks"""
1002
if getattr(self, "enabled", False):
319
if getattr(self, u"enabled", False):
1003
320
# Already enabled
1004
321
return
1005
self.expires = datetime.datetime.utcnow() + self.timeout
1006
self.enabled = True
1007
322
self.last_enabled = datetime.datetime.utcnow()
1008
self.init_checker()
1009
self.send_changedstate()
1010
323
# Schedule a new checker to be started an 'interval' from now,
324
# and every interval from then on.
325
self.checker_initiator_tag = (gobject.timeout_add
326
(self.interval_milliseconds(),
327
self.start_checker))
328
# Schedule a disable() when 'timeout' has passed
329
self.disable_initiator_tag = (gobject.timeout_add
330
(self.timeout_milliseconds(),
331
self.disable))
332
self.enabled = True
333
# Also start a new checker *right now*.
334
self.start_checker()
335
1011
336
def disable(self, quiet=True):
1012
337
"""Disable this client."""
1013
338
if not getattr(self, "enabled", False):
1014
339
return False
1015
340
if not quiet:
1016
logger.info("Disabling client %s", self.name)
1017
if getattr(self, "disable_initiator_tag", None) is not None:
1018
GLib.source_remove(self.disable_initiator_tag)
341
logger.info(u"Disabling client %s", self.name)
342
if getattr(self, u"disable_initiator_tag", False):
343
gobject.source_remove(self.disable_initiator_tag)
1019
344
self.disable_initiator_tag = None
1020
self.expires = None
1021
if getattr(self, "checker_initiator_tag", None) is not None:
1022
GLib.source_remove(self.checker_initiator_tag)
345
if getattr(self, u"checker_initiator_tag", False):
346
gobject.source_remove(self.checker_initiator_tag)
1023
347
self.checker_initiator_tag = None
1024
348
self.stop_checker()
349
if self.disable_hook:
350
self.disable_hook(self)
1025
351
self.enabled = False
1026
if not quiet:
1027
self.send_changedstate()
1028
# Do not run this again if called by a GLib.timeout_add
352
# Do not run this again if called by a gobject.timeout_add
1029
353
return False
1030
354
1031
355
def __del__(self):
356
self.disable_hook = None
1032
357
self.disable()
1033
1034
def init_checker(self):
1035
# Schedule a new checker to be started an 'interval' from now,
1036
# and every interval from then on.
1037
if self.checker_initiator_tag is not None:
1038
GLib.source_remove(self.checker_initiator_tag)
1039
self.checker_initiator_tag = GLib.timeout_add(
1040
int(self.interval.total_seconds() * 1000),
1041
self.start_checker)
1042
# Schedule a disable() when 'timeout' has passed
1043
if self.disable_initiator_tag is not None:
1044
GLib.source_remove(self.disable_initiator_tag)
1045
self.disable_initiator_tag = GLib.timeout_add(
1046
int(self.timeout.total_seconds() * 1000), self.disable)
1047
# Also start a new checker *right now*.
1048
self.start_checker()
1049
1050
def checker_callback(self, source, condition, connection,
1051
command):
358
359
def checker_callback(self, pid, condition, command):
1052
360
"""The checker has completed, so take appropriate actions."""
1053
# Read return code from connection (see call_pipe)
1054
returncode = connection.recv()
1055
connection.close()
1056
self.checker.join()
1057
361
self.checker_callback_tag = None
1058
362
self.checker = None
1059
1060
if returncode >= 0:
1061
self.last_checker_status = returncode
1062
self.last_checker_signal = None
1063
if self.last_checker_status == 0:
1064
logger.info("Checker for %(name)s succeeded",
363
if os.WIFEXITED(condition):
364
exitstatus = os.WEXITSTATUS(condition)
365
if exitstatus == 0:
366
logger.info(u"Checker for %(name)s succeeded",
1065
367
vars(self))
1066
368
self.checked_ok()
1067
369
else:
1068
logger.info("Checker for %(name)s failed", vars(self))
370
logger.info(u"Checker for %(name)s failed",
371
vars(self))
1069
372
else:
1070
self.last_checker_status = -1
1071
self.last_checker_signal = -returncode
1072
logger.warning("Checker for %(name)s crashed?",
373
logger.warning(u"Checker for %(name)s crashed?",
1073
374
vars(self))
1074
return False
1075
375
1076
376
def checked_ok(self):
1077
"""Assert that the client has been seen, alive and well."""
377
"""Bump up the timeout for this client.
378
379
This should only be called when the client has been seen,
380
alive and well.
381
"""
1078
382
self.last_checked_ok = datetime.datetime.utcnow()
1079
self.last_checker_status = 0
1080
self.last_checker_signal = None
1081
self.bump_timeout()
1082
1083
def bump_timeout(self, timeout=None):
1084
"""Bump up the timeout for this client."""
1085
if timeout is None:
1086
timeout = self.timeout
1087
if self.disable_initiator_tag is not None:
1088
GLib.source_remove(self.disable_initiator_tag)
1089
self.disable_initiator_tag = None
1090
if getattr(self, "enabled", False):
1091
self.disable_initiator_tag = GLib.timeout_add(
1092
int(timeout.total_seconds() * 1000), self.disable)
1093
self.expires = datetime.datetime.utcnow() + timeout
1094
1095
def need_approval(self):
1096
self.last_approval_request = datetime.datetime.utcnow()
1097
383
gobject.source_remove(self.disable_initiator_tag)
384
self.disable_initiator_tag = (gobject.timeout_add
385
(self.timeout_milliseconds(),
386
self.disable))
387
1098
388
def start_checker(self):
1099
389
"""Start a new checker subprocess if one is not running.
1100
390
1101
391
If a checker already exists, leave it running and do
1102
392
nothing."""
1103
393
# The reason for not killing a running checker is that if we
1104
# did that, and if a checker (for some reason) started running
1105
# slowly and taking more than 'interval' time, then the client
1106
# would inevitably timeout, since no checker would get a
1107
# chance to run to completion. If we instead leave running
394
# did that, then if a checker (for some reason) started
395
# running slowly and taking more than 'interval' time, the
396
# client would inevitably timeout, since no checker would get
397
# a chance to run to completion. If we instead leave running
1108
398
# checkers alone, the checker would have to take more time
1109
399
# than 'timeout' for the client to be disabled, which is as it
1110
400
# should be.
1111
1112
if self.checker is not None and not self.checker.is_alive():
1113
logger.warning("Checker was not alive; joining")
1114
self.checker.join()
1115
self.checker = None
401
402
# If a checker exists, make sure it is not a zombie
403
try:
404
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
405
except (AttributeError, OSError), error:
406
if (isinstance(error, OSError)
407
and error.errno != errno.ECHILD):
408
raise error
409
else:
410
if pid:
411
logger.warning(u"Checker was a zombie")
412
gobject.source_remove(self.checker_callback_tag)
413
self.checker_callback(pid, status,
414
self.current_checker_command)
1116
415
# Start a new checker if needed
1117
416
if self.checker is None:
1118
# Escape attributes for the shell
1119
escaped_attrs = {
1120
attr: re.escape(str(getattr(self, attr)))
1121
for attr in self.runtime_expansions}
1122
417
try:
1123
command = self.checker_command % escaped_attrs
1124
except TypeError as error:
1125
logger.error('Could not format string "%s"',
1126
self.checker_command,
1127
exc_info=error)
1128
return True # Try again later
418
# In case checker_command has exactly one % operator
419
command = self.checker_command % self.host
420
except TypeError:
421
# Escape attributes for the shell
422
escaped_attrs = dict((key,
423
re.escape(unicode(str(val),
424
errors=
425
u'replace')))
426
for key, val in
427
vars(self).iteritems())
428
try:
429
command = self.checker_command % escaped_attrs
430
except TypeError, error:
431
logger.error(u'Could not format string "%s":'
432
u' %s', self.checker_command, error)
433
return True # Try again later
1129
434
self.current_checker_command = command
1130
logger.info("Starting checker %r for %s", command,
1131
self.name)
1132
# We don't need to redirect stdout and stderr, since
1133
# in normal mode, that is already done by daemon(),
1134
# and in debug mode we don't want to. (Stdin is
1135
# always replaced by /dev/null.)
1136
# The exception is when not debugging but nevertheless
1137
# running in the foreground; use the previously
1138
# created wnull.
1139
popen_args = {"close_fds": True,
1140
"shell": True,
1141
"cwd": "/"}
1142
if (not self.server_settings["debug"]
1143
and self.server_settings["foreground"]):
1144
popen_args.update({"stdout": wnull,
1145
"stderr": wnull})
1146
pipe = multiprocessing.Pipe(duplex=False)
1147
self.checker = multiprocessing.Process(
1148
target=call_pipe,
1149
args=(pipe[1], subprocess.call, command),
1150
kwargs=popen_args)
1151
self.checker.start()
1152
self.checker_callback_tag = GLib.io_add_watch(
1153
pipe[0].fileno(), GLib.IO_IN,
1154
self.checker_callback, pipe[0], command)
1155
# Re-run this periodically if run by GLib.timeout_add
435
try:
436
logger.info(u"Starting checker %r for %s",
437
command, self.name)
438
# We don't need to redirect stdout and stderr, since
439
# in normal mode, that is already done by daemon(),
440
# and in debug mode we don't want to. (Stdin is
441
# always replaced by /dev/null.)
442
self.checker = subprocess.Popen(command,
443
close_fds=True,
444
shell=True, cwd=u"/")
445
self.checker_callback_tag = (gobject.child_watch_add
446
(self.checker.pid,
447
self.checker_callback,
448
data=command))
449
# The checker may have completed before the gobject
450
# watch was added. Check for this.
451
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
452
if pid:
453
gobject.source_remove(self.checker_callback_tag)
454
self.checker_callback(pid, status, command)
455
except OSError, error:
456
logger.error(u"Failed to start subprocess: %s",
457
error)
458
# Re-run this periodically if run by gobject.timeout_add
1156
459
return True
1157
460
1158
461
def stop_checker(self):
1159
462
"""Force the checker process, if any, to stop."""
1160
463
if self.checker_callback_tag:
1161
GLib.source_remove(self.checker_callback_tag)
464
gobject.source_remove(self.checker_callback_tag)
1162
465
self.checker_callback_tag = None
1163
if getattr(self, "checker", None) is None:
466
if getattr(self, u"checker", None) is None:
1164
467
return
1165
logger.debug("Stopping checker for %(name)s", vars(self))
1166
self.checker.terminate()
468
logger.debug(u"Stopping checker for %(name)s", vars(self))
469
try:
470
os.kill(self.checker.pid, signal.SIGTERM)
471
#time.sleep(0.5)
472
#if self.checker.poll() is None:
473
# os.kill(self.checker.pid, signal.SIGKILL)
474
except OSError, error:
475
if error.errno != errno.ESRCH: # No such process
476
raise
1167
477
self.checker = None
1168
478
1169
479
1170
def dbus_service_property(dbus_interface,
1171
signature="v",
1172
access="readwrite",
1173
byte_arrays=False):
480
def dbus_service_property(dbus_interface, signature=u"v",
481
access=u"readwrite", byte_arrays=False):
1174
482
"""Decorators for marking methods of a DBusObjectWithProperties to
1175
483
become properties on the D-Bus.
1176
484
1177
485
The decorated method will be called with no arguments by "Get"
1178
486
and with one argument by "Set".
1179
487
1180
488
The parameters, where they are supported, are the same as
1181
489
dbus.service.method, except there is only "signature", since the
1182
490
type from Get() and the type sent to Set() is the same.
1183
491
"""
1184
492
# Encoding deeply encoded byte arrays is not supported yet by the
1185
493
# "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
494
if byte_arrays and signature != u"ay":
495
raise ValueError(u"Byte arrays not supported for non-'ay'"
496
u" signature %r" % signature)
1190
497
def decorator(func):
1191
498
func._dbus_is_property = True
1192
499
func._dbus_interface = dbus_interface
1193
500
func._dbus_signature = signature
1194
501
func._dbus_access = access
1195
502
func._dbus_name = func.__name__
1196
if func._dbus_name.endswith("_dbus_property"):
503
if func._dbus_name.endswith(u"_dbus_property"):
1197
504
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
505
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
506
return func
1244
507
return decorator
1245
508
1246
509
1247
510
class DBusPropertyException(dbus.exceptions.DBusException):
1248
511
"""A base class for D-Bus property-related exceptions
1249
512
"""
1250
pass
513
def __unicode__(self):
514
return unicode(str(self))
1251
515
1252
516
1253
517
class DBusPropertyAccessException(DBusPropertyException):
1262
526
pass
1263
527
1264
528
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):
529
class DBusObjectWithProperties(dbus.service.Object):
1355
530
"""A D-Bus object with properties.
1356
531
1357
532
Classes inheriting from this can use the dbus_service_property
1358
533
decorator to expose methods as D-Bus properties. It exposes the
1359
534
standard Get(), Set(), and GetAll() methods on the D-Bus.
1360
535
"""
1361
536
537
@staticmethod
538
def _is_dbus_property(obj):
539
return getattr(obj, u"_dbus_is_property", False)
540
541
def _get_all_dbus_properties(self):
542
"""Returns a generator of (name, attribute) pairs
543
"""
544
return ((prop._dbus_name, prop)
545
for name, prop in
546
inspect.getmembers(self, self._is_dbus_property))
547
1362
548
def _get_dbus_property(self, interface_name, property_name):
1363
549
"""Returns a bound method if one exists which is a D-Bus
1364
550
property with the specified name and interface.
1365
551
"""
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
552
for name in (property_name,
553
property_name + u"_dbus_property"):
554
prop = getattr(self, name, None)
555
if (prop is None
556
or not self._is_dbus_property(prop)
557
or prop._dbus_name != property_name
558
or (interface_name and prop._dbus_interface
559
and interface_name != prop._dbus_interface)):
560
continue
561
return prop
1373
562
# 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")
563
raise DBusPropertyNotFound(self.dbus_object_path + u":"
564
+ interface_name + u"."
565
+ property_name)
566
567
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
568
out_signature=u"v")
1389
569
def Get(self, interface_name, property_name):
1390
570
"""Standard D-Bus property Get() method, see D-Bus standard.
1391
571
"""
1392
572
prop = self._get_dbus_property(interface_name, property_name)
1393
if prop._dbus_access == "write":
573
if prop._dbus_access == u"write":
1394
574
raise DBusPropertyAccessException(property_name)
1395
575
value = prop()
1396
if not hasattr(value, "variant_level"):
576
if not hasattr(value, u"variant_level"):
1397
577
return value
1398
578
return type(value)(value, variant_level=value.variant_level+1)
1399
1400
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
579
580
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
1401
581
def Set(self, interface_name, property_name, value):
1402
582
"""Standard D-Bus property Set() method, see D-Bus standard.
1403
583
"""
1404
584
prop = self._get_dbus_property(interface_name, property_name)
1405
if prop._dbus_access == "read":
585
if prop._dbus_access == u"read":
1406
586
raise DBusPropertyAccessException(property_name)
1407
if prop._dbus_get_args_options["byte_arrays"]:
587
if prop._dbus_get_args_options[u"byte_arrays"]:
1408
588
# The byte_arrays option is not supported yet on
1409
589
# 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(b''.join(chr(byte)
1415
for byte in value))
590
if prop._dbus_signature != u"ay":
591
raise ValueError
592
value = dbus.ByteArray(''.join(unichr(byte)
593
for byte in value))
1416
594
prop(value)
1417
1418
@dbus.service.method(dbus.PROPERTIES_IFACE,
1419
in_signature="s",
1420
out_signature="a{sv}")
595
596
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
597
out_signature=u"a{sv}")
1421
598
def GetAll(self, interface_name):
1422
599
"""Standard D-Bus property GetAll() method, see D-Bus
1423
600
standard.
1424
601
1425
602
Note: Will not include properties with access="write".
1426
603
"""
1427
properties = {}
1428
for name, prop in self._get_all_dbus_things("property"):
604
all = {}
605
for name, prop in self._get_all_dbus_properties():
1429
606
if (interface_name
1430
607
and interface_name != prop._dbus_interface):
1431
608
# Interface non-empty but did not match
1432
609
continue
1433
610
# Ignore write-only properties
1434
if prop._dbus_access == "write":
611
if prop._dbus_access == u"write":
1435
612
continue
1436
613
value = prop()
1437
if not hasattr(value, "variant_level"):
1438
properties[name] = value
614
if not hasattr(value, u"variant_level"):
615
all[name] = value
1439
616
continue
1440
properties[name] = type(value)(
1441
value, variant_level=value.variant_level + 1)
1442
return dbus.Dictionary(properties, signature="sv")
1443
1444
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1445
def PropertiesChanged(self, interface_name, changed_properties,
1446
invalidated_properties):
1447
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1448
standard.
1449
"""
1450
pass
1451
617
all[name] = type(value)(value, variant_level=
618
value.variant_level+1)
619
return dbus.Dictionary(all, signature=u"sv")
620
1452
621
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1453
out_signature="s",
622
out_signature=u"s",
1454
623
path_keyword='object_path',
1455
624
connection_keyword='connection')
1456
625
def Introspect(self, object_path, connection):
1457
"""Overloading of standard D-Bus method.
1458
1459
Inserts property tags and interface annotation tags.
626
"""Standard D-Bus method, overloaded to insert property tags.
1460
627
"""
1461
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1462
object_path,
1463
connection)
628
xmlstring = dbus.service.Object.Introspect(self, object_path,
629
connection)
1464
630
try:
1465
631
document = xml.dom.minidom.parseString(xmlstring)
1466
1467
632
def make_tag(document, name, prop):
1468
e = document.createElement("property")
1469
e.setAttribute("name", name)
1470
e.setAttribute("type", prop._dbus_signature)
1471
e.setAttribute("access", prop._dbus_access)
633
e = document.createElement(u"property")
634
e.setAttribute(u"name", name)
635
e.setAttribute(u"type", prop._dbus_signature)
636
e.setAttribute(u"access", prop._dbus_access)
1472
637
return e
1473
1474
for if_tag in document.getElementsByTagName("interface"):
1475
# Add property tags
638
for if_tag in document.getElementsByTagName(u"interface"):
1476
639
for tag in (make_tag(document, name, prop)
1477
640
for name, prop
1478
in self._get_all_dbus_things("property")
641
in self._get_all_dbus_properties()
1479
642
if prop._dbus_interface
1480
== if_tag.getAttribute("name")):
643
== if_tag.getAttribute(u"name")):
1481
644
if_tag.appendChild(tag)
1482
# Add annotation tags for properties
1483
for tag in if_tag.getElementsByTagName("property"):
1484
annots = dict()
1485
for name, prop in self._get_all_dbus_things(
1486
"property"):
1487
if (name == tag.getAttribute("name")
1488
and prop._dbus_interface
1489
== if_tag.getAttribute("name")):
1490
annots.update(getattr(
1491
prop, "_dbus_annotations", {}))
1492
for name, value in annots.items():
1493
ann_tag = document.createElement(
1494
"annotation")
1495
ann_tag.setAttribute("name", name)
1496
ann_tag.setAttribute("value", value)
1497
tag.appendChild(ann_tag)
1498
645
# Add the names to the return values for the
1499
646
# "org.freedesktop.DBus.Properties" methods
1500
if (if_tag.getAttribute("name")
1501
== "org.freedesktop.DBus.Properties"):
1502
for cn in if_tag.getElementsByTagName("method"):
1503
if cn.getAttribute("name") == "Get":
1504
for arg in cn.getElementsByTagName("arg"):
1505
if (arg.getAttribute("direction")
1506
== "out"):
1507
arg.setAttribute("name", "value")
1508
elif cn.getAttribute("name") == "GetAll":
1509
for arg in cn.getElementsByTagName("arg"):
1510
if (arg.getAttribute("direction")
1511
== "out"):
1512
arg.setAttribute("name", "props")
1513
xmlstring = document.toxml("utf-8")
1514
document.unlink()
1515
except (AttributeError, xml.dom.DOMException,
1516
xml.parsers.expat.ExpatError) as error:
1517
logger.error("Failed to override Introspection method",
1518
exc_info=error)
1519
return xmlstring
1520
1521
1522
try:
1523
dbus.OBJECT_MANAGER_IFACE
1524
except AttributeError:
1525
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1526
1527
1528
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1529
"""A D-Bus object with an ObjectManager.
1530
1531
Classes inheriting from this exposes the standard
1532
GetManagedObjects call and the InterfacesAdded and
1533
InterfacesRemoved signals on the standard
1534
"org.freedesktop.DBus.ObjectManager" interface.
1535
1536
Note: No signals are sent automatically; they must be sent
1537
manually.
1538
"""
1539
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1540
out_signature="a{oa{sa{sv}}}")
1541
def GetManagedObjects(self):
1542
"""This function must be overridden"""
1543
raise NotImplementedError()
1544
1545
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1546
signature="oa{sa{sv}}")
1547
def InterfacesAdded(self, object_path, interfaces_and_properties):
1548
pass
1549
1550
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1551
def InterfacesRemoved(self, object_path, interfaces):
1552
pass
1553
1554
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1555
out_signature="s",
1556
path_keyword='object_path',
1557
connection_keyword='connection')
1558
def Introspect(self, object_path, connection):
1559
"""Overloading of standard D-Bus method.
1560
1561
Override return argument name of GetManagedObjects to be
1562
"objpath_interfaces_and_properties"
1563
"""
1564
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1565
object_path,
1566
connection)
1567
try:
1568
document = xml.dom.minidom.parseString(xmlstring)
1569
1570
for if_tag in document.getElementsByTagName("interface"):
1571
# Fix argument name for the GetManagedObjects method
1572
if (if_tag.getAttribute("name")
1573
== dbus.OBJECT_MANAGER_IFACE):
1574
for cn in if_tag.getElementsByTagName("method"):
1575
if (cn.getAttribute("name")
1576
== "GetManagedObjects"):
1577
for arg in cn.getElementsByTagName("arg"):
1578
if (arg.getAttribute("direction")
1579
== "out"):
1580
arg.setAttribute(
1581
"name",
1582
"objpath_interfaces"
1583
"_and_properties")
1584
xmlstring = document.toxml("utf-8")
1585
document.unlink()
1586
except (AttributeError, xml.dom.DOMException,
1587
xml.parsers.expat.ExpatError) as error:
1588
logger.error("Failed to override Introspection method",
1589
exc_info=error)
1590
return xmlstring
1591
1592
1593
def datetime_to_dbus(dt, variant_level=0):
1594
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1595
if dt is None:
1596
return dbus.String("", variant_level=variant_level)
1597
return dbus.String(dt.isoformat(), variant_level=variant_level)
1598
1599
1600
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1601
"""A class decorator; applied to a subclass of
1602
dbus.service.Object, it will add alternate D-Bus attributes with
1603
interface names according to the "alt_interface_names" mapping.
1604
Usage:
1605
1606
@alternate_dbus_interfaces({"org.example.Interface":
1607
"net.example.AlternateInterface"})
1608
class SampleDBusObject(dbus.service.Object):
1609
@dbus.service.method("org.example.Interface")
1610
def SampleDBusMethod():
1611
pass
1612
1613
The above "SampleDBusMethod" on "SampleDBusObject" will be
1614
reachable via two interfaces: "org.example.Interface" and
1615
"net.example.AlternateInterface", the latter of which will have
1616
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1617
"true", unless "deprecate" is passed with a False value.
1618
1619
This works for methods and signals, and also for D-Bus properties
1620
(from DBusObjectWithProperties) and interfaces (from the
1621
dbus_interface_annotations decorator).
1622
"""
1623
1624
def wrapper(cls):
1625
for orig_interface_name, alt_interface_name in (
1626
alt_interface_names.items()):
1627
attr = {}
1628
interface_names = set()
1629
# Go though all attributes of the class
1630
for attrname, attribute in inspect.getmembers(cls):
1631
# Ignore non-D-Bus attributes, and D-Bus attributes
1632
# with the wrong interface name
1633
if (not hasattr(attribute, "_dbus_interface")
1634
or not attribute._dbus_interface.startswith(
1635
orig_interface_name)):
1636
continue
1637
# Create an alternate D-Bus interface name based on
1638
# the current name
1639
alt_interface = attribute._dbus_interface.replace(
1640
orig_interface_name, alt_interface_name)
1641
interface_names.add(alt_interface)
1642
# Is this a D-Bus signal?
1643
if getattr(attribute, "_dbus_is_signal", False):
1644
# Extract the original non-method undecorated
1645
# function by black magic
1646
if sys.version_info.major == 2:
1647
nonmethod_func = (dict(
1648
zip(attribute.func_code.co_freevars,
1649
attribute.__closure__))
1650
["func"].cell_contents)
1651
else:
1652
nonmethod_func = (dict(
1653
zip(attribute.__code__.co_freevars,
1654
attribute.__closure__))
1655
["func"].cell_contents)
1656
# Create a new, but exactly alike, function
1657
# object, and decorate it to be a new D-Bus signal
1658
# with the alternate D-Bus interface name
1659
new_function = copy_function(nonmethod_func)
1660
new_function = (dbus.service.signal(
1661
alt_interface,
1662
attribute._dbus_signature)(new_function))
1663
# Copy annotations, if any
1664
try:
1665
new_function._dbus_annotations = dict(
1666
attribute._dbus_annotations)
1667
except AttributeError:
1668
pass
1669
1670
# Define a creator of a function to call both the
1671
# original and alternate functions, so both the
1672
# original and alternate signals gets sent when
1673
# the function is called
1674
def fixscope(func1, func2):
1675
"""This function is a scope container to pass
1676
func1 and func2 to the "call_both" function
1677
outside of its arguments"""
1678
1679
@functools.wraps(func2)
1680
def call_both(*args, **kwargs):
1681
"""This function will emit two D-Bus
1682
signals by calling func1 and func2"""
1683
func1(*args, **kwargs)
1684
func2(*args, **kwargs)
1685
# Make wrapper function look like a D-Bus
1686
# signal
1687
for name, attr in inspect.getmembers(func2):
1688
if name.startswith("_dbus_"):
1689
setattr(call_both, name, attr)
1690
1691
return call_both
1692
# Create the "call_both" function and add it to
1693
# the class
1694
attr[attrname] = fixscope(attribute, new_function)
1695
# Is this a D-Bus method?
1696
elif getattr(attribute, "_dbus_is_method", False):
1697
# Create a new, but exactly alike, function
1698
# object. Decorate it to be a new D-Bus method
1699
# with the alternate D-Bus interface name. Add it
1700
# to the class.
1701
attr[attrname] = (
1702
dbus.service.method(
1703
alt_interface,
1704
attribute._dbus_in_signature,
1705
attribute._dbus_out_signature)
1706
(copy_function(attribute)))
1707
# Copy annotations, if any
1708
try:
1709
attr[attrname]._dbus_annotations = dict(
1710
attribute._dbus_annotations)
1711
except AttributeError:
1712
pass
1713
# Is this a D-Bus property?
1714
elif getattr(attribute, "_dbus_is_property", False):
1715
# Create a new, but exactly alike, function
1716
# object, and decorate it to be a new D-Bus
1717
# property with the alternate D-Bus interface
1718
# name. Add it to the class.
1719
attr[attrname] = (dbus_service_property(
1720
alt_interface, attribute._dbus_signature,
1721
attribute._dbus_access,
1722
attribute._dbus_get_args_options
1723
["byte_arrays"])
1724
(copy_function(attribute)))
1725
# Copy annotations, if any
1726
try:
1727
attr[attrname]._dbus_annotations = dict(
1728
attribute._dbus_annotations)
1729
except AttributeError:
1730
pass
1731
# Is this a D-Bus interface?
1732
elif getattr(attribute, "_dbus_is_interface", False):
1733
# Create a new, but exactly alike, function
1734
# object. Decorate it to be a new D-Bus interface
1735
# with the alternate D-Bus interface name. Add it
1736
# to the class.
1737
attr[attrname] = (
1738
dbus_interface_annotations(alt_interface)
1739
(copy_function(attribute)))
1740
if deprecate:
1741
# Deprecate all alternate interfaces
1742
iname = "_AlternateDBusNames_interface_annotation{}"
1743
for interface_name in interface_names:
1744
1745
@dbus_interface_annotations(interface_name)
1746
def func(self):
1747
return {"org.freedesktop.DBus.Deprecated":
1748
"true"}
1749
# Find an unused name
1750
for aname in (iname.format(i)
1751
for i in itertools.count()):
1752
if aname not in attr:
1753
attr[aname] = func
1754
break
1755
if interface_names:
1756
# Replace the class with a new subclass of it with
1757
# methods, signals, etc. as created above.
1758
if sys.version_info.major == 2:
1759
cls = type(b"{}Alternate".format(cls.__name__),
1760
(cls, ), attr)
1761
else:
1762
cls = type("{}Alternate".format(cls.__name__),
1763
(cls, ), attr)
1764
return cls
1765
1766
return wrapper
1767
1768
1769
@alternate_dbus_interfaces({"se.recompile.Mandos":
1770
"se.bsnet.fukt.Mandos"})
647
if (if_tag.getAttribute(u"name")
648
== u"org.freedesktop.DBus.Properties"):
649
for cn in if_tag.getElementsByTagName(u"method"):
650
if cn.getAttribute(u"name") == u"Get":
651
for arg in cn.getElementsByTagName(u"arg"):
652
if (arg.getAttribute(u"direction")
653
== u"out"):
654
arg.setAttribute(u"name", u"value")
655
elif cn.getAttribute(u"name") == u"GetAll":
656
for arg in cn.getElementsByTagName(u"arg"):
657
if (arg.getAttribute(u"direction")
658
== u"out"):
659
arg.setAttribute(u"name", u"props")
660
xmlstring = document.toxml(u"utf-8")
661
document.unlink()
662
except (AttributeError, xml.dom.DOMException,
663
xml.parsers.expat.ExpatError), error:
664
logger.error(u"Failed to override Introspection method",
665
error)
666
return xmlstring
667
668
1771
669
class ClientDBus(Client, DBusObjectWithProperties):
1772
670
"""A Client class using D-Bus
1773
671
1774
672
Attributes:
1775
673
dbus_object_path: dbus.ObjectPath
1776
674
bus: dbus.SystemBus()
1777
675
"""
1778
1779
runtime_expansions = (Client.runtime_expansions
1780
+ ("dbus_object_path", ))
1781
1782
_interface = "se.recompile.Mandos.Client"
1783
1784
676
# dbus.service.Object doesn't use super(), so we can't either.
1785
1786
def __init__(self, bus=None, *args, **kwargs):
677
678
def __init__(self, bus = None, *args, **kwargs):
1787
679
self.bus = bus
1788
680
Client.__init__(self, *args, **kwargs)
1789
681
# Only now, when this client is initialized, can it show up on
1790
682
# the D-Bus
1791
client_object_name = str(self.name).translate(
1792
{ord("."): ord("_"),
1793
ord("-"): ord("_")})
1794
self.dbus_object_path = dbus.ObjectPath(
1795
"/clients/" + client_object_name)
683
self.dbus_object_path = (dbus.ObjectPath
684
(u"/clients/"
685
+ self.name.replace(u".", u"_")))
1796
686
DBusObjectWithProperties.__init__(self, self.bus,
1797
687
self.dbus_object_path)
1798
1799
def notifychangeproperty(transform_func, dbus_name,
1800
type_func=lambda x: x,
1801
variant_level=1,
1802
invalidate_only=False,
1803
_interface=_interface):
1804
""" Modify a variable so that it's a property which announces
1805
its changes to DBus.
1806
1807
transform_fun: Function that takes a value and a variant_level
1808
and transforms it to a D-Bus type.
1809
dbus_name: D-Bus name of the variable
1810
type_func: Function that transform the value before sending it
1811
to the D-Bus. Default: no transform
1812
variant_level: D-Bus variant level. Default: 1
1813
"""
1814
attrname = "_{}".format(dbus_name)
1815
1816
def setter(self, value):
1817
if hasattr(self, "dbus_object_path"):
1818
if (not hasattr(self, attrname) or
1819
type_func(getattr(self, attrname, None))
1820
!= type_func(value)):
1821
if invalidate_only:
1822
self.PropertiesChanged(
1823
_interface, dbus.Dictionary(),
1824
dbus.Array((dbus_name, )))
1825
else:
1826
dbus_value = transform_func(
1827
type_func(value),
1828
variant_level=variant_level)
1829
self.PropertyChanged(dbus.String(dbus_name),
1830
dbus_value)
1831
self.PropertiesChanged(
1832
_interface,
1833
dbus.Dictionary({dbus.String(dbus_name):
1834
dbus_value}),
1835
dbus.Array())
1836
setattr(self, attrname, value)
1837
1838
return property(lambda self: getattr(self, attrname), setter)
1839
1840
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1841
approvals_pending = notifychangeproperty(dbus.Boolean,
1842
"ApprovalPending",
1843
type_func=bool)
1844
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1845
last_enabled = notifychangeproperty(datetime_to_dbus,
1846
"LastEnabled")
1847
checker = notifychangeproperty(
1848
dbus.Boolean, "CheckerRunning",
1849
type_func=lambda checker: checker is not None)
1850
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1851
"LastCheckedOK")
1852
last_checker_status = notifychangeproperty(dbus.Int16,
1853
"LastCheckerStatus")
1854
last_approval_request = notifychangeproperty(
1855
datetime_to_dbus, "LastApprovalRequest")
1856
approved_by_default = notifychangeproperty(dbus.Boolean,
1857
"ApprovedByDefault")
1858
approval_delay = notifychangeproperty(
1859
dbus.UInt64, "ApprovalDelay",
1860
type_func=lambda td: td.total_seconds() * 1000)
1861
approval_duration = notifychangeproperty(
1862
dbus.UInt64, "ApprovalDuration",
1863
type_func=lambda td: td.total_seconds() * 1000)
1864
host = notifychangeproperty(dbus.String, "Host")
1865
timeout = notifychangeproperty(
1866
dbus.UInt64, "Timeout",
1867
type_func=lambda td: td.total_seconds() * 1000)
1868
extended_timeout = notifychangeproperty(
1869
dbus.UInt64, "ExtendedTimeout",
1870
type_func=lambda td: td.total_seconds() * 1000)
1871
interval = notifychangeproperty(
1872
dbus.UInt64, "Interval",
1873
type_func=lambda td: td.total_seconds() * 1000)
1874
checker_command = notifychangeproperty(dbus.String, "Checker")
1875
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1876
invalidate_only=True)
1877
1878
del notifychangeproperty
1879
688
689
@staticmethod
690
def _datetime_to_dbus(dt, variant_level=0):
691
"""Convert a UTC datetime.datetime() to a D-Bus type."""
692
return dbus.String(dt.isoformat(),
693
variant_level=variant_level)
694
695
def enable(self):
696
oldstate = getattr(self, u"enabled", False)
697
r = Client.enable(self)
698
if oldstate != self.enabled:
699
# Emit D-Bus signals
700
self.PropertyChanged(dbus.String(u"enabled"),
701
dbus.Boolean(True, variant_level=1))
702
self.PropertyChanged(
703
dbus.String(u"last_enabled"),
704
self._datetime_to_dbus(self.last_enabled,
705
variant_level=1))
706
return r
707
708
def disable(self, quiet = False):
709
oldstate = getattr(self, u"enabled", False)
710
r = Client.disable(self, quiet=quiet)
711
if not quiet and oldstate != self.enabled:
712
# Emit D-Bus signal
713
self.PropertyChanged(dbus.String(u"enabled"),
714
dbus.Boolean(False, variant_level=1))
715
return r
716
1880
717
def __del__(self, *args, **kwargs):
1881
718
try:
1882
719
self.remove_from_connection()
1883
720
except LookupError:
1884
721
pass
1885
if hasattr(DBusObjectWithProperties, "__del__"):
722
if hasattr(DBusObjectWithProperties, u"__del__"):
1886
723
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1887
724
Client.__del__(self, *args, **kwargs)
1888
1889
def checker_callback(self, source, condition,
1890
connection, command, *args, **kwargs):
1891
ret = Client.checker_callback(self, source, condition,
1892
connection, command, *args,
1893
**kwargs)
1894
exitstatus = self.last_checker_status
1895
if exitstatus >= 0:
725
726
def checker_callback(self, pid, condition, command,
727
*args, **kwargs):
728
self.checker_callback_tag = None
729
self.checker = None
730
# Emit D-Bus signal
731
self.PropertyChanged(dbus.String(u"checker_running"),
732
dbus.Boolean(False, variant_level=1))
733
if os.WIFEXITED(condition):
734
exitstatus = os.WEXITSTATUS(condition)
1896
735
# Emit D-Bus signal
1897
736
self.CheckerCompleted(dbus.Int16(exitstatus),
1898
# This is specific to GNU libC
1899
dbus.Int64(exitstatus << 8),
737
dbus.Int64(condition),
1900
738
dbus.String(command))
1901
739
else:
1902
740
# Emit D-Bus signal
1903
741
self.CheckerCompleted(dbus.Int16(-1),
1904
dbus.Int64(
1905
# This is specific to GNU libC
1906
(exitstatus << 8)
1907
| self.last_checker_signal),
742
dbus.Int64(condition),
1908
743
dbus.String(command))
1909
return ret
1910
744
745
return Client.checker_callback(self, pid, condition, command,
746
*args, **kwargs)
747
748
def checked_ok(self, *args, **kwargs):
749
r = Client.checked_ok(self, *args, **kwargs)
750
# Emit D-Bus signal
751
self.PropertyChanged(
752
dbus.String(u"last_checked_ok"),
753
(self._datetime_to_dbus(self.last_checked_ok,
754
variant_level=1)))
755
return r
756
1911
757
def start_checker(self, *args, **kwargs):
1912
old_checker_pid = getattr(self.checker, "pid", None)
758
old_checker = self.checker
759
if self.checker is not None:
760
old_checker_pid = self.checker.pid
761
else:
762
old_checker_pid = None
1913
763
r = Client.start_checker(self, *args, **kwargs)
1914
764
# Only if new checker process was started
1915
765
if (self.checker is not None
1916
766
and old_checker_pid != self.checker.pid):
1917
767
# Emit D-Bus signal
1918
768
self.CheckerStarted(self.current_checker_command)
1919
return r
1920
1921
def _reset_approved(self):
1922
self.approved = None
1923
return False
1924
1925
def approve(self, value=True):
1926
self.approved = value
1927
GLib.timeout_add(int(self.approval_duration.total_seconds()
1928
* 1000), self._reset_approved)
1929
self.send_changedstate()
1930
1931
# D-Bus methods, signals & properties
1932
1933
# Interfaces
1934
1935
# Signals
1936
769
self.PropertyChanged(
770
dbus.String(u"checker_running"),
771
dbus.Boolean(True, variant_level=1))
772
return r
773
774
def stop_checker(self, *args, **kwargs):
775
old_checker = getattr(self, u"checker", None)
776
r = Client.stop_checker(self, *args, **kwargs)
777
if (old_checker is not None
778
and getattr(self, u"checker", None) is None):
779
self.PropertyChanged(dbus.String(u"checker_running"),
780
dbus.Boolean(False, variant_level=1))
781
return r
782
783
## D-Bus methods & signals
784
_interface = u"se.bsnet.fukt.Mandos.Client"
785
786
# CheckedOK - method
787
@dbus.service.method(_interface)
788
def CheckedOK(self):
789
return self.checked_ok()
790
1937
791
# CheckerCompleted - signal
1938
@dbus.service.signal(_interface, signature="nxs")
792
@dbus.service.signal(_interface, signature=u"nxs")
1939
793
def CheckerCompleted(self, exitcode, waitstatus, command):
1940
794
"D-Bus signal"
1941
795
pass
1942
796
1943
797
# CheckerStarted - signal
1944
@dbus.service.signal(_interface, signature="s")
798
@dbus.service.signal(_interface, signature=u"s")
1945
799
def CheckerStarted(self, command):
1946
800
"D-Bus signal"
1947
801
pass
1948
802
1949
803
# PropertyChanged - signal
1950
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1951
@dbus.service.signal(_interface, signature="sv")
804
@dbus.service.signal(_interface, signature=u"sv")
1952
805
def PropertyChanged(self, property, value):
1953
806
"D-Bus signal"
1954
807
pass
1955
808
1956
809
# GotSecret - signal
1957
810
@dbus.service.signal(_interface)
1958
811
def GotSecret(self):
1959
"""D-Bus signal
1960
Is sent after a successful transfer of secret from the Mandos
1961
server to mandos-client
1962
"""
812
"D-Bus signal"
1963
813
pass
1964
814
1965
815
# Rejected - signal
1966
@dbus.service.signal(_interface, signature="s")
1967
def Rejected(self, reason):
816
@dbus.service.signal(_interface)
817
def Rejected(self):
1968
818
"D-Bus signal"
1969
819
pass
1970
1971
# NeedApproval - signal
1972
@dbus.service.signal(_interface, signature="tb")
1973
def NeedApproval(self, timeout, default):
1974
"D-Bus signal"
1975
return self.need_approval()
1976
1977
# Methods
1978
1979
# Approve - method
1980
@dbus.service.method(_interface, in_signature="b")
1981
def Approve(self, value):
1982
self.approve(value)
1983
1984
# CheckedOK - method
1985
@dbus.service.method(_interface)
1986
def CheckedOK(self):
1987
self.checked_ok()
1988
820
1989
821
# Enable - method
1990
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1991
822
@dbus.service.method(_interface)
1992
823
def Enable(self):
1993
824
"D-Bus method"
1994
825
self.enable()
1995
826
1996
827
# StartChecker - method
1997
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1998
828
@dbus.service.method(_interface)
1999
829
def StartChecker(self):
2000
830
"D-Bus method"
2001
831
self.start_checker()
2002
832
2003
833
# Disable - method
2004
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2005
834
@dbus.service.method(_interface)
2006
835
def Disable(self):
2007
836
"D-Bus method"
2008
837
self.disable()
2009
838
2010
839
# StopChecker - method
2011
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2012
840
@dbus.service.method(_interface)
2013
841
def StopChecker(self):
2014
842
self.stop_checker()
2015
2016
# Properties
2017
2018
# ApprovalPending - property
2019
@dbus_service_property(_interface, signature="b", access="read")
2020
def ApprovalPending_dbus_property(self):
2021
return dbus.Boolean(bool(self.approvals_pending))
2022
2023
# ApprovedByDefault - property
2024
@dbus_service_property(_interface,
2025
signature="b",
2026
access="readwrite")
2027
def ApprovedByDefault_dbus_property(self, value=None):
2028
if value is None: # get
2029
return dbus.Boolean(self.approved_by_default)
2030
self.approved_by_default = bool(value)
2031
2032
# ApprovalDelay - property
2033
@dbus_service_property(_interface,
2034
signature="t",
2035
access="readwrite")
2036
def ApprovalDelay_dbus_property(self, value=None):
2037
if value is None: # get
2038
return dbus.UInt64(self.approval_delay.total_seconds()
2039
* 1000)
2040
self.approval_delay = datetime.timedelta(0, 0, 0, value)
2041
2042
# ApprovalDuration - property
2043
@dbus_service_property(_interface,
2044
signature="t",
2045
access="readwrite")
2046
def ApprovalDuration_dbus_property(self, value=None):
2047
if value is None: # get
2048
return dbus.UInt64(self.approval_duration.total_seconds()
2049
* 1000)
2050
self.approval_duration = datetime.timedelta(0, 0, 0, value)
2051
2052
# Name - property
2053
@dbus_annotations(
2054
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2055
@dbus_service_property(_interface, signature="s", access="read")
2056
def Name_dbus_property(self):
843
844
# name - property
845
@dbus_service_property(_interface, signature=u"s", access=u"read")
846
def name_dbus_property(self):
2057
847
return dbus.String(self.name)
2058
2059
# KeyID - property
2060
@dbus_annotations(
2061
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2062
@dbus_service_property(_interface, signature="s", access="read")
2063
def KeyID_dbus_property(self):
2064
return dbus.String(self.key_id)
2065
2066
# Fingerprint - property
2067
@dbus_annotations(
2068
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2069
@dbus_service_property(_interface, signature="s", access="read")
2070
def Fingerprint_dbus_property(self):
848
849
# fingerprint - property
850
@dbus_service_property(_interface, signature=u"s", access=u"read")
851
def fingerprint_dbus_property(self):
2071
852
return dbus.String(self.fingerprint)
2072
2073
# Host - property
2074
@dbus_service_property(_interface,
2075
signature="s",
2076
access="readwrite")
2077
def Host_dbus_property(self, value=None):
853
854
# host - property
855
@dbus_service_property(_interface, signature=u"s",
856
access=u"readwrite")
857
def host_dbus_property(self, value=None):
2078
858
if value is None: # get
2079
859
return dbus.String(self.host)
2080
self.host = str(value)
2081
2082
# Created - property
2083
@dbus_annotations(
2084
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2085
@dbus_service_property(_interface, signature="s", access="read")
2086
def Created_dbus_property(self):
2087
return datetime_to_dbus(self.created)
2088
2089
# LastEnabled - property
2090
@dbus_service_property(_interface, signature="s", access="read")
2091
def LastEnabled_dbus_property(self):
2092
return datetime_to_dbus(self.last_enabled)
2093
2094
# Enabled - property
2095
@dbus_service_property(_interface,
2096
signature="b",
2097
access="readwrite")
2098
def Enabled_dbus_property(self, value=None):
860
self.host = value
861
# Emit D-Bus signal
862
self.PropertyChanged(dbus.String(u"host"),
863
dbus.String(value, variant_level=1))
864
865
# created - property
866
@dbus_service_property(_interface, signature=u"s", access=u"read")
867
def created_dbus_property(self):
868
return dbus.String(self._datetime_to_dbus(self.created))
869
870
# last_enabled - property
871
@dbus_service_property(_interface, signature=u"s", access=u"read")
872
def last_enabled_dbus_property(self):
873
if self.last_enabled is None:
874
return dbus.String(u"")
875
return dbus.String(self._datetime_to_dbus(self.last_enabled))
876
877
# enabled - property
878
@dbus_service_property(_interface, signature=u"b",
879
access=u"readwrite")
880
def enabled_dbus_property(self, value=None):
2099
881
if value is None: # get
2100
882
return dbus.Boolean(self.enabled)
2101
883
if value:
2102
884
self.enable()
2103
885
else:
2104
886
self.disable()
2105
2106
# LastCheckedOK - property
2107
@dbus_service_property(_interface,
2108
signature="s",
2109
access="readwrite")
2110
def LastCheckedOK_dbus_property(self, value=None):
887
888
# last_checked_ok - property
889
@dbus_service_property(_interface, signature=u"s",
890
access=u"readwrite")
891
def last_checked_ok_dbus_property(self, value=None):
2111
892
if value is not None:
2112
893
self.checked_ok()
2113
894
return
2114
return datetime_to_dbus(self.last_checked_ok)
2115
2116
# LastCheckerStatus - property
2117
@dbus_service_property(_interface, signature="n", access="read")
2118
def LastCheckerStatus_dbus_property(self):
2119
return dbus.Int16(self.last_checker_status)
2120
2121
# Expires - property
2122
@dbus_service_property(_interface, signature="s", access="read")
2123
def Expires_dbus_property(self):
2124
return datetime_to_dbus(self.expires)
2125
2126
# LastApprovalRequest - property
2127
@dbus_service_property(_interface, signature="s", access="read")
2128
def LastApprovalRequest_dbus_property(self):
2129
return datetime_to_dbus(self.last_approval_request)
2130
2131
# Timeout - property
2132
@dbus_service_property(_interface,
2133
signature="t",
2134
access="readwrite")
2135
def Timeout_dbus_property(self, value=None):
895
if self.last_checked_ok is None:
896
return dbus.String(u"")
897
return dbus.String(self._datetime_to_dbus(self
898
.last_checked_ok))
899
900
# timeout - property
901
@dbus_service_property(_interface, signature=u"t",
902
access=u"readwrite")
903
def timeout_dbus_property(self, value=None):
2136
904
if value is None: # get
2137
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2138
old_timeout = self.timeout
905
return dbus.UInt64(self.timeout_milliseconds())
2139
906
self.timeout = datetime.timedelta(0, 0, 0, value)
2140
# Reschedule disabling
2141
if self.enabled:
2142
now = datetime.datetime.utcnow()
2143
self.expires += self.timeout - old_timeout
2144
if self.expires <= now:
2145
# The timeout has passed
2146
self.disable()
2147
else:
2148
if (getattr(self, "disable_initiator_tag", None)
2149
is None):
2150
return
2151
GLib.source_remove(self.disable_initiator_tag)
2152
self.disable_initiator_tag = GLib.timeout_add(
2153
int((self.expires - now).total_seconds() * 1000),
2154
self.disable)
2155
2156
# ExtendedTimeout - property
2157
@dbus_service_property(_interface,
2158
signature="t",
2159
access="readwrite")
2160
def ExtendedTimeout_dbus_property(self, value=None):
2161
if value is None: # get
2162
return dbus.UInt64(self.extended_timeout.total_seconds()
2163
* 1000)
2164
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2165
2166
# Interval - property
2167
@dbus_service_property(_interface,
2168
signature="t",
2169
access="readwrite")
2170
def Interval_dbus_property(self, value=None):
2171
if value is None: # get
2172
return dbus.UInt64(self.interval.total_seconds() * 1000)
907
# Emit D-Bus signal
908
self.PropertyChanged(dbus.String(u"timeout"),
909
dbus.UInt64(value, variant_level=1))
910
if getattr(self, u"disable_initiator_tag", None) is None:
911
return
912
# Reschedule timeout
913
gobject.source_remove(self.disable_initiator_tag)
914
self.disable_initiator_tag = None
915
time_to_die = (self.
916
_timedelta_to_milliseconds((self
917
.last_checked_ok
918
+ self.timeout)
919
- datetime.datetime
920
.utcnow()))
921
if time_to_die <= 0:
922
# The timeout has passed
923
self.disable()
924
else:
925
self.disable_initiator_tag = (gobject.timeout_add
926
(time_to_die, self.disable))
927
928
# interval - property
929
@dbus_service_property(_interface, signature=u"t",
930
access=u"readwrite")
931
def interval_dbus_property(self, value=None):
932
if value is None: # get
933
return dbus.UInt64(self.interval_milliseconds())
2173
934
self.interval = datetime.timedelta(0, 0, 0, value)
2174
if getattr(self, "checker_initiator_tag", None) is None:
935
# Emit D-Bus signal
936
self.PropertyChanged(dbus.String(u"interval"),
937
dbus.UInt64(value, variant_level=1))
938
if getattr(self, u"checker_initiator_tag", None) is None:
2175
939
return
2176
if self.enabled:
2177
# Reschedule checker run
2178
GLib.source_remove(self.checker_initiator_tag)
2179
self.checker_initiator_tag = GLib.timeout_add(
2180
value, self.start_checker)
2181
self.start_checker() # Start one now, too
940
# Reschedule checker run
941
gobject.source_remove(self.checker_initiator_tag)
942
self.checker_initiator_tag = (gobject.timeout_add
943
(value, self.start_checker))
944
self.start_checker() # Start one now, too
2182
945
2183
# Checker - property
2184
@dbus_service_property(_interface,
2185
signature="s",
2186
access="readwrite")
2187
def Checker_dbus_property(self, value=None):
946
# checker - property
947
@dbus_service_property(_interface, signature=u"s",
948
access=u"readwrite")
949
def checker_dbus_property(self, value=None):
2188
950
if value is None: # get
2189
951
return dbus.String(self.checker_command)
2190
self.checker_command = str(value)
2191
2192
# CheckerRunning - property
2193
@dbus_service_property(_interface,
2194
signature="b",
2195
access="readwrite")
2196
def CheckerRunning_dbus_property(self, value=None):
952
self.checker_command = value
953
# Emit D-Bus signal
954
self.PropertyChanged(dbus.String(u"checker"),
955
dbus.String(self.checker_command,
956
variant_level=1))
957
958
# checker_running - property
959
@dbus_service_property(_interface, signature=u"b",
960
access=u"readwrite")
961
def checker_running_dbus_property(self, value=None):
2197
962
if value is None: # get
2198
963
return dbus.Boolean(self.checker is not None)
2199
964
if value:
2200
965
self.start_checker()
2201
966
else:
2202
967
self.stop_checker()
2203
2204
# ObjectPath - property
2205
@dbus_annotations(
2206
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2207
"org.freedesktop.DBus.Deprecated": "true"})
2208
@dbus_service_property(_interface, signature="o", access="read")
2209
def ObjectPath_dbus_property(self):
2210
return self.dbus_object_path # is already a dbus.ObjectPath
2211
2212
# Secret = property
2213
@dbus_annotations(
2214
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2215
"invalidates"})
2216
@dbus_service_property(_interface,
2217
signature="ay",
2218
access="write",
2219
byte_arrays=True)
2220
def Secret_dbus_property(self, value):
2221
self.secret = bytes(value)
2222
968
969
# object_path - property
970
@dbus_service_property(_interface, signature=u"o", access=u"read")
971
def object_path_dbus_property(self):
972
return self.dbus_object_path # is already a dbus.ObjectPath
973
974
# secret = property
975
@dbus_service_property(_interface, signature=u"ay",
976
access=u"write", byte_arrays=True)
977
def secret_dbus_property(self, value):
978
self.secret = str(value)
979
2223
980
del _interface
2224
981
2225
982
2226
class ProxyClient:
2227
def __init__(self, child_pipe, key_id, fpr, address):
2228
self._pipe = child_pipe
2229
self._pipe.send(('init', key_id, fpr, address))
2230
if not self._pipe.recv():
2231
raise KeyError(key_id or fpr)
2232
2233
def __getattribute__(self, name):
2234
if name == '_pipe':
2235
return super(ProxyClient, self).__getattribute__(name)
2236
self._pipe.send(('getattr', name))
2237
data = self._pipe.recv()
2238
if data[0] == 'data':
2239
return data[1]
2240
if data[0] == 'function':
2241
2242
def func(*args, **kwargs):
2243
self._pipe.send(('funcall', name, args, kwargs))
2244
return self._pipe.recv()[1]
2245
2246
return func
2247
2248
def __setattr__(self, name, value):
2249
if name == '_pipe':
2250
return super(ProxyClient, self).__setattr__(name, value)
2251
self._pipe.send(('setattr', name, value))
2252
2253
2254
983
class ClientHandler(socketserver.BaseRequestHandler, object):
2255
984
"""A class to handle client connections.
2256
985
2257
986
Instantiated once for each connection to handle it.
2258
987
Note: This will run in its own forked process."""
2259
988
2260
989
def handle(self):
2261
with contextlib.closing(self.server.child_pipe) as child_pipe:
2262
logger.info("TCP connection from: %s",
2263
str(self.client_address))
2264
logger.debug("Pipe FD: %d",
2265
self.server.child_pipe.fileno())
2266
2267
session = gnutls.ClientSession(self.request)
2268
2269
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2270
# "+AES-256-CBC", "+SHA1",
2271
# "+COMP-NULL", "+CTYPE-OPENPGP",
2272
# "+DHE-DSS"))
990
logger.info(u"TCP connection from: %s",
991
unicode(self.client_address))
992
logger.debug(u"IPC Pipe FD: %d", self.server.child_pipe[1])
993
# Open IPC pipe to parent process
994
with contextlib.nested(os.fdopen(self.server.child_pipe[1],
995
u"w", 1),
996
os.fdopen(self.server.parent_pipe[0],
997
u"r", 0)) as (ipc,
998
ipc_return):
999
session = (gnutls.connection
1000
.ClientSession(self.request,
1001
gnutls.connection
1002
.X509Credentials()))
1003
1004
line = self.request.makefile().readline()
1005
logger.debug(u"Protocol version: %r", line)
1006
try:
1007
if int(line.strip().split()[0]) > 1:
1008
raise RuntimeError
1009
except (ValueError, IndexError, RuntimeError), error:
1010
logger.error(u"Unknown protocol version: %s", error)
1011
return
1012
1013
# Note: gnutls.connection.X509Credentials is really a
1014
# generic GnuTLS certificate credentials object so long as
1015
# no X.509 keys are added to it. Therefore, we can use it
1016
# here despite using OpenPGP certificates.
1017
1018
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1019
# u"+AES-256-CBC", u"+SHA1",
1020
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1021
# u"+DHE-DSS"))
2273
1022
# Use a fallback default, since this MUST be set.
2274
1023
priority = self.server.gnutls_priority
2275
1024
if priority is None:
2276
priority = "NORMAL"
2277
gnutls.priority_set_direct(session._c_object,
2278
priority.encode("utf-8"),
2279
None)
2280
2281
# Start communication using the Mandos protocol
2282
# Get protocol number
2283
line = self.request.makefile().readline()
2284
logger.debug("Protocol version: %r", line)
2285
try:
2286
if int(line.strip().split()[0]) > 1:
2287
raise RuntimeError(line)
2288
except (ValueError, IndexError, RuntimeError) as error:
2289
logger.error("Unknown protocol version: %s", error)
2290
return
2291
2292
# Start GnuTLS connection
1025
priority = u"NORMAL"
1026
(gnutls.library.functions
1027
.gnutls_priority_set_direct(session._c_object,
1028
priority, None))
1029
2293
1030
try:
2294
1031
session.handshake()
2295
except gnutls.Error as error:
2296
logger.warning("Handshake failed: %s", error)
1032
except gnutls.errors.GNUTLSError, error:
1033
logger.warning(u"Handshake failed: %s", error)
2297
1034
# Do not run session.bye() here: the session is not
2298
1035
# established. Just abandon the request.
2299
1036
return
2300
logger.debug("Handshake succeeded")
2301
2302
approval_required = False
1037
logger.debug(u"Handshake succeeded")
2303
1038
try:
2304
if gnutls.has_rawpk:
2305
fpr = b""
2306
try:
2307
key_id = self.key_id(
2308
self.peer_certificate(session))
2309
except (TypeError, gnutls.Error) as error:
2310
logger.warning("Bad certificate: %s", error)
2311
return
2312
logger.debug("Key ID: %s", key_id)
2313
2314
else:
2315
key_id = b""
2316
try:
2317
fpr = self.fingerprint(
2318
self.peer_certificate(session))
2319
except (TypeError, gnutls.Error) as error:
2320
logger.warning("Bad certificate: %s", error)
2321
return
2322
logger.debug("Fingerprint: %s", fpr)
2323
2324
1039
try:
2325
client = ProxyClient(child_pipe, key_id, fpr,
2326
self.client_address)
2327
except KeyError:
1040
fpr = self.fingerprint(self.peer_certificate
1041
(session))
1042
except (TypeError, gnutls.errors.GNUTLSError), error:
1043
logger.warning(u"Bad certificate: %s", error)
2328
1044
return
2329
2330
if client.approval_delay:
2331
delay = client.approval_delay
2332
client.approvals_pending += 1
2333
approval_required = True
2334
2335
while True:
2336
if not client.enabled:
2337
logger.info("Client %s is disabled",
2338
client.name)
2339
if self.server.use_dbus:
2340
# Emit D-Bus signal
2341
client.Rejected("Disabled")
2342
return
2343
2344
if client.approved or not client.approval_delay:
2345
# We are approved or approval is disabled
1045
logger.debug(u"Fingerprint: %s", fpr)
1046
1047
for c in self.server.clients:
1048
if c.fingerprint == fpr:
1049
client = c
2346
1050
break
2347
elif client.approved is None:
2348
logger.info("Client %s needs approval",
2349
client.name)
2350
if self.server.use_dbus:
2351
# Emit D-Bus signal
2352
client.NeedApproval(
2353
client.approval_delay.total_seconds()
2354
* 1000, client.approved_by_default)
2355
else:
2356
logger.warning("Client %s was not approved",
2357
client.name)
2358
if self.server.use_dbus:
2359
# Emit D-Bus signal
2360
client.Rejected("Denied")
2361
return
2362
2363
# wait until timeout or approved
2364
time = datetime.datetime.now()
2365
client.changedstate.acquire()
2366
client.changedstate.wait(delay.total_seconds())
2367
client.changedstate.release()
2368
time2 = datetime.datetime.now()
2369
if (time2 - time) >= delay:
2370
if not client.approved_by_default:
2371
logger.warning("Client %s timed out while"
2372
" waiting for approval",
2373
client.name)
2374
if self.server.use_dbus:
2375
# Emit D-Bus signal
2376
client.Rejected("Approval timed out")
2377
return
2378
else:
2379
break
2380
else:
2381
delay -= time2 - time
2382
2383
try:
2384
session.send(client.secret)
2385
except gnutls.Error as error:
2386
logger.warning("gnutls send failed",
2387
exc_info=error)
2388
return
2389
2390
logger.info("Sending secret to %s", client.name)
2391
# bump the timeout using extended_timeout
2392
client.bump_timeout(client.extended_timeout)
2393
if self.server.use_dbus:
2394
# Emit D-Bus signal
2395
client.GotSecret()
2396
1051
else:
1052
ipc.write(u"NOTFOUND %s %s\n"
1053
% (fpr, unicode(self.client_address)))
1054
return
1055
# Have to check if client.enabled, since it is
1056
# possible that the client was disabled since the
1057
# GnuTLS session was established.
1058
ipc.write(u"GETATTR enabled %s\n" % fpr)
1059
enabled = pickle.load(ipc_return)
1060
if not enabled:
1061
ipc.write(u"DISABLED %s\n" % client.name)
1062
return
1063
ipc.write(u"SENDING %s\n" % client.name)
1064
sent_size = 0
1065
while sent_size < len(client.secret):
1066
sent = session.send(client.secret[sent_size:])
1067
logger.debug(u"Sent: %d, remaining: %d",
1068
sent, len(client.secret)
1069
- (sent_size + sent))
1070
sent_size += sent
2397
1071
finally:
2398
if approval_required:
2399
client.approvals_pending -= 1
2400
try:
2401
session.bye()
2402
except gnutls.Error as error:
2403
logger.warning("GnuTLS bye failed",
2404
exc_info=error)
2405
1072
session.bye()
1073
2406
1074
@staticmethod
2407
1075
def peer_certificate(session):
2408
"Return the peer's certificate as a bytestring"
2409
try:
2410
cert_type = gnutls.certificate_type_get2(session._c_object,
2411
gnutls.CTYPE_PEERS)
2412
except AttributeError:
2413
cert_type = gnutls.certificate_type_get(session._c_object)
2414
if gnutls.has_rawpk:
2415
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2416
else:
2417
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2418
# If not a valid certificate type...
2419
if cert_type not in valid_cert_types:
2420
logger.info("Cert type %r not in %r", cert_type,
2421
valid_cert_types)
2422
# ...return invalid data
2423
return b""
1076
"Return the peer's OpenPGP certificate as a bytestring"
1077
# If not an OpenPGP certificate...
1078
if (gnutls.library.functions
1079
.gnutls_certificate_type_get(session._c_object)
1080
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1081
# ...do the normal thing
1082
return session.peer_certificate
2424
1083
list_size = ctypes.c_uint(1)
2425
cert_list = (gnutls.certificate_get_peers
1084
cert_list = (gnutls.library.functions
1085
.gnutls_certificate_get_peers
2426
1086
(session._c_object, ctypes.byref(list_size)))
2427
1087
if not bool(cert_list) and list_size.value != 0:
2428
raise gnutls.Error("error getting peer certificate")
1088
raise gnutls.errors.GNUTLSError(u"error getting peer"
1089
u" certificate")
2429
1090
if list_size.value == 0:
2430
1091
return None
2431
1092
cert = cert_list[0]
2432
1093
return ctypes.string_at(cert.data, cert.size)
2433
2434
@staticmethod
2435
def key_id(certificate):
2436
"Convert a certificate bytestring to a hexdigit key ID"
2437
# New GnuTLS "datum" with the public key
2438
datum = gnutls.datum_t(
2439
ctypes.cast(ctypes.c_char_p(certificate),
2440
ctypes.POINTER(ctypes.c_ubyte)),
2441
ctypes.c_uint(len(certificate)))
2442
# XXX all these need to be created in the gnutls "module"
2443
# New empty GnuTLS certificate
2444
pubkey = gnutls.pubkey_t()
2445
gnutls.pubkey_init(ctypes.byref(pubkey))
2446
# Import the raw public key into the certificate
2447
gnutls.pubkey_import(pubkey,
2448
ctypes.byref(datum),
2449
gnutls.X509_FMT_DER)
2450
# New buffer for the key ID
2451
buf = ctypes.create_string_buffer(32)
2452
buf_len = ctypes.c_size_t(len(buf))
2453
# Get the key ID from the raw public key into the buffer
2454
gnutls.pubkey_get_key_id(pubkey,
2455
gnutls.KEYID_USE_SHA256,
2456
ctypes.cast(ctypes.byref(buf),
2457
ctypes.POINTER(ctypes.c_ubyte)),
2458
ctypes.byref(buf_len))
2459
# Deinit the certificate
2460
gnutls.pubkey_deinit(pubkey)
2461
2462
# Convert the buffer to a Python bytestring
2463
key_id = ctypes.string_at(buf, buf_len.value)
2464
# Convert the bytestring to hexadecimal notation
2465
hex_key_id = binascii.hexlify(key_id).upper()
2466
return hex_key_id
2467
1094
2468
1095
@staticmethod
2469
1096
def fingerprint(openpgp):
2470
1097
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2471
1098
# New GnuTLS "datum" with the OpenPGP public key
2472
datum = gnutls.datum_t(
2473
ctypes.cast(ctypes.c_char_p(openpgp),
2474
ctypes.POINTER(ctypes.c_ubyte)),
2475
ctypes.c_uint(len(openpgp)))
1099
datum = (gnutls.library.types
1100
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1101
ctypes.POINTER
1102
(ctypes.c_ubyte)),
1103
ctypes.c_uint(len(openpgp))))
2476
1104
# New empty GnuTLS certificate
2477
crt = gnutls.openpgp_crt_t()
2478
gnutls.openpgp_crt_init(ctypes.byref(crt))
1105
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1106
(gnutls.library.functions
1107
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2479
1108
# Import the OpenPGP public key into the certificate
2480
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2481
gnutls.OPENPGP_FMT_RAW)
1109
(gnutls.library.functions
1110
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1111
gnutls.library.constants
1112
.GNUTLS_OPENPGP_FMT_RAW))
2482
1113
# Verify the self signature in the key
2483
1114
crtverify = ctypes.c_uint()
2484
gnutls.openpgp_crt_verify_self(crt, 0,
2485
ctypes.byref(crtverify))
1115
(gnutls.library.functions
1116
.gnutls_openpgp_crt_verify_self(crt, 0,
1117
ctypes.byref(crtverify)))
2486
1118
if crtverify.value != 0:
2487
gnutls.openpgp_crt_deinit(crt)
2488
raise gnutls.CertificateSecurityError(code
2489
=crtverify.value)
1119
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1120
raise (gnutls.errors.CertificateSecurityError
1121
(u"Verify failed"))
2490
1122
# New buffer for the fingerprint
2491
1123
buf = ctypes.create_string_buffer(20)
2492
1124
buf_len = ctypes.c_size_t()
2493
1125
# Get the fingerprint from the certificate into the buffer
2494
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2495
ctypes.byref(buf_len))
1126
(gnutls.library.functions
1127
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1128
ctypes.byref(buf_len)))
2496
1129
# Deinit the certificate
2497
gnutls.openpgp_crt_deinit(crt)
1130
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2498
1131
# Convert the buffer to a Python bytestring
2499
1132
fpr = ctypes.string_at(buf, buf_len.value)
2500
1133
# Convert the bytestring to hexadecimal notation
2501
hex_fpr = binascii.hexlify(fpr).upper()
1134
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
2502
1135
return hex_fpr
2503
1136
2504
1137
2505
class MultiprocessingMixIn:
2506
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2507
2508
def sub_process_main(self, request, address):
2509
try:
2510
self.finish_request(request, address)
2511
except Exception:
2512
self.handle_error(request, address)
2513
self.close_request(request)
2514
2515
def process_request(self, request, address):
2516
"""Start a new process to process the request."""
2517
proc = multiprocessing.Process(target=self.sub_process_main,
2518
args=(request, address))
2519
proc.start()
2520
return proc
2521
2522
2523
class MultiprocessingMixInWithPipe(MultiprocessingMixIn):
2524
""" adds a pipe to the MixIn """
2525
1138
class ForkingMixInWithPipes(socketserver.ForkingMixIn, object):
1139
"""Like socketserver.ForkingMixIn, but also pass a pipe pair."""
2526
1140
def process_request(self, request, client_address):
2527
1141
"""Overrides and wraps the original process_request().
2528
1142
2529
1143
This function creates a new pipe in self.pipe
2530
1144
"""
2531
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2532
2533
proc = MultiprocessingMixIn.process_request(self, request,
2534
client_address)
2535
self.child_pipe.close()
2536
self.add_pipe(parent_pipe, proc)
2537
2538
def add_pipe(self, parent_pipe, proc):
1145
self.child_pipe = os.pipe() # Child writes here
1146
self.parent_pipe = os.pipe() # Parent writes here
1147
super(ForkingMixInWithPipes,
1148
self).process_request(request, client_address)
1149
# Close unused ends for parent
1150
os.close(self.parent_pipe[0]) # close read end
1151
os.close(self.child_pipe[1]) # close write end
1152
self.add_pipe_fds(self.child_pipe[0], self.parent_pipe[1])
1153
def add_pipe_fds(self, child_pipe_fd, parent_pipe_fd):
2539
1154
"""Dummy function; override as necessary"""
2540
raise NotImplementedError()
2541
2542
2543
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2544
socketserver.TCPServer):
1155
os.close(child_pipe_fd)
1156
os.close(parent_pipe_fd)
1157
1158
1159
class IPv6_TCPServer(ForkingMixInWithPipes,
1160
socketserver.TCPServer, object):
2545
1161
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
2546
1162
2547
1163
Attributes:
2548
1164
enabled: Boolean; whether this server is activated yet
2549
1165
interface: None or a network interface name (string)
2550
1166
use_ipv6: Boolean; to use IPv6 or not
2551
1167
"""
2552
2553
1168
def __init__(self, server_address, RequestHandlerClass,
2554
interface=None,
2555
use_ipv6=True,
2556
socketfd=None):
2557
"""If socketfd is set, use that file descriptor instead of
2558
creating a new one with socket.socket().
2559
"""
1169
interface=None, use_ipv6=True):
2560
1170
self.interface = interface
2561
1171
if use_ipv6:
2562
1172
self.address_family = socket.AF_INET6
2563
if socketfd is not None:
2564
# Save the file descriptor
2565
self.socketfd = socketfd
2566
# Save the original socket.socket() function
2567
self.socket_socket = socket.socket
2568
2569
# To implement --socket, we monkey patch socket.socket.
2570
#
2571
# (When socketserver.TCPServer is a new-style class, we
2572
# could make self.socket into a property instead of monkey
2573
# patching socket.socket.)
2574
#
2575
# Create a one-time-only replacement for socket.socket()
2576
@functools.wraps(socket.socket)
2577
def socket_wrapper(*args, **kwargs):
2578
# Restore original function so subsequent calls are
2579
# not affected.
2580
socket.socket = self.socket_socket
2581
del self.socket_socket
2582
# This time only, return a new socket object from the
2583
# saved file descriptor.
2584
return socket.fromfd(self.socketfd, *args, **kwargs)
2585
# Replace socket.socket() function with wrapper
2586
socket.socket = socket_wrapper
2587
# The socketserver.TCPServer.__init__ will call
2588
# socket.socket(), which might be our replacement,
2589
# socket_wrapper(), if socketfd was set.
2590
1173
socketserver.TCPServer.__init__(self, server_address,
2591
1174
RequestHandlerClass)
2592
2593
1175
def server_bind(self):
2594
1176
"""This overrides the normal server_bind() function
2595
1177
to bind to an interface if one was specified, and also NOT to
2596
1178
bind to an address or port if they were not specified."""
2597
global SO_BINDTODEVICE
2598
1179
if self.interface is not None:
2599
1180
if SO_BINDTODEVICE is None:
2600
# Fall back to a hard-coded value which seems to be
2601
# common enough.
2602
logger.warning("SO_BINDTODEVICE not found, trying 25")
2603
SO_BINDTODEVICE = 25
2604
try:
2605
self.socket.setsockopt(
2606
socket.SOL_SOCKET, SO_BINDTODEVICE,
2607
(self.interface + "\0").encode("utf-8"))
2608
except socket.error as error:
2609
if error.errno == errno.EPERM:
2610
logger.error("No permission to bind to"
2611
" interface %s", self.interface)
2612
elif error.errno == errno.ENOPROTOOPT:
2613
logger.error("SO_BINDTODEVICE not available;"
2614
" cannot bind to interface %s",
2615
self.interface)
2616
elif error.errno == errno.ENODEV:
2617
logger.error("Interface %s does not exist,"
2618
" cannot bind", self.interface)
2619
else:
2620
raise
1181
logger.error(u"SO_BINDTODEVICE does not exist;"
1182
u" cannot bind to interface %s",
1183
self.interface)
1184
else:
1185
try:
1186
self.socket.setsockopt(socket.SOL_SOCKET,
1187
SO_BINDTODEVICE,
1188
str(self.interface
1189
+ u'\0'))
1190
except socket.error, error:
1191
if error[0] == errno.EPERM:
1192
logger.error(u"No permission to"
1193
u" bind to interface %s",
1194
self.interface)
1195
elif error[0] == errno.ENOPROTOOPT:
1196
logger.error(u"SO_BINDTODEVICE not available;"
1197
u" cannot bind to interface %s",
1198
self.interface)
1199
else:
1200
raise
2621
1201
# Only bind(2) the socket if we really need to.
2622
1202
if self.server_address[0] or self.server_address[1]:
2623
if self.server_address[1]:
2624
self.allow_reuse_address = True
2625
1203
if not self.server_address[0]:
2626
1204
if self.address_family == socket.AF_INET6:
2627
any_address = "::" # in6addr_any
1205
any_address = u"::" # in6addr_any
2628
1206
else:
2629
any_address = "0.0.0.0" # INADDR_ANY
1207
any_address = socket.INADDR_ANY
2630
1208
self.server_address = (any_address,
2631
1209
self.server_address[1])
2632
1210
elif not self.server_address[1]:
2633
self.server_address = (self.server_address[0], 0)
1211
self.server_address = (self.server_address[0],
1212
0)
2634
1213
# if self.interface:
2635
1214
# self.server_address = (self.server_address[0],
2636
1215
# 0, # port
2642
1221
2643
1222
class MandosServer(IPv6_TCPServer):
2644
1223
"""Mandos server.
2645
1224
2646
1225
Attributes:
2647
1226
clients: set of Client objects
2648
1227
gnutls_priority GnuTLS priority string
2649
1228
use_dbus: Boolean; to emit D-Bus signals or not
2650
2651
Assumes a GLib.MainLoop event loop.
1229
1230
Assumes a gobject.MainLoop event loop.
2652
1231
"""
2653
2654
1232
def __init__(self, server_address, RequestHandlerClass,
2655
interface=None,
2656
use_ipv6=True,
2657
clients=None,
2658
gnutls_priority=None,
2659
use_dbus=True,
2660
socketfd=None):
1233
interface=None, use_ipv6=True, clients=None,
1234
gnutls_priority=None, use_dbus=True):
2661
1235
self.enabled = False
2662
1236
self.clients = clients
2663
1237
if self.clients is None:
2664
self.clients = {}
1238
self.clients = set()
2665
1239
self.use_dbus = use_dbus
2666
1240
self.gnutls_priority = gnutls_priority
2667
1241
IPv6_TCPServer.__init__(self, server_address,
2668
1242
RequestHandlerClass,
2669
interface=interface,
2670
use_ipv6=use_ipv6,
2671
socketfd=socketfd)
2672
1243
interface = interface,
1244
use_ipv6 = use_ipv6)
2673
1245
def server_activate(self):
2674
1246
if self.enabled:
2675
1247
return socketserver.TCPServer.server_activate(self)
2676
2677
1248
def enable(self):
2678
1249
self.enabled = True
2679
2680
def add_pipe(self, parent_pipe, proc):
1250
def add_pipe_fds(self, child_pipe_fd, parent_pipe_fd):
2681
1251
# Call "handle_ipc" for both data and EOF events
2682
GLib.io_add_watch(
2683
parent_pipe.fileno(),
2684
GLib.IO_IN | GLib.IO_HUP,
2685
functools.partial(self.handle_ipc,
2686
parent_pipe=parent_pipe,
2687
proc=proc))
2688
2689
def handle_ipc(self, source, condition,
2690
parent_pipe=None,
2691
proc=None,
2692
client_object=None):
2693
# error, or the other end of multiprocessing.Pipe has closed
2694
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2695
# Wait for other process to exit
2696
proc.join()
2697
return False
2698
2699
# Read a request from the child
2700
request = parent_pipe.recv()
2701
command = request[0]
2702
2703
if command == 'init':
2704
key_id = request[1].decode("ascii")
2705
fpr = request[2].decode("ascii")
2706
address = request[3]
2707
2708
for c in self.clients.values():
2709
if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2710
continue
2711
if key_id and c.key_id == key_id:
2712
client = c
2713
break
2714
if fpr and c.fingerprint == fpr:
2715
client = c
2716
break
2717
else:
2718
logger.info("Client not found for key ID: %s, address"
2719
": %s", key_id or fpr, address)
2720
if self.use_dbus:
2721
# Emit D-Bus signal
2722
mandos_dbus_service.ClientNotFound(key_id or fpr,
2723
address[0])
2724
parent_pipe.send(False)
2725
return False
2726
2727
GLib.io_add_watch(
2728
parent_pipe.fileno(),
2729
GLib.IO_IN | GLib.IO_HUP,
2730
functools.partial(self.handle_ipc,
2731
parent_pipe=parent_pipe,
2732
proc=proc,
2733
client_object=client))
2734
parent_pipe.send(True)
2735
# remove the old hook in favor of the new above hook on
2736
# same fileno
2737
return False
2738
if command == 'funcall':
2739
funcname = request[1]
2740
args = request[2]
2741
kwargs = request[3]
2742
2743
parent_pipe.send(('data', getattr(client_object,
2744
funcname)(*args,
2745
**kwargs)))
2746
2747
if command == 'getattr':
2748
attrname = request[1]
2749
if isinstance(client_object.__getattribute__(attrname),
2750
collections.Callable):
2751
parent_pipe.send(('function', ))
2752
else:
2753
parent_pipe.send((
2754
'data', client_object.__getattribute__(attrname)))
2755
2756
if command == 'setattr':
2757
attrname = request[1]
2758
value = request[2]
2759
setattr(client_object, attrname, value)
2760
1252
gobject.io_add_watch(child_pipe_fd,
1253
gobject.IO_IN | gobject.IO_HUP,
1254
functools.partial(self.handle_ipc,
1255
reply_fd
1256
=parent_pipe_fd))
1257
def handle_ipc(self, source, condition, reply_fd=None,
1258
file_objects={}):
1259
condition_names = {
1260
gobject.IO_IN: u"IN", # There is data to read.
1261
gobject.IO_OUT: u"OUT", # Data can be written (without
1262
# blocking).
1263
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1264
gobject.IO_ERR: u"ERR", # Error condition.
1265
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1266
# broken, usually for pipes and
1267
# sockets).
1268
}
1269
conditions_string = ' | '.join(name
1270
for cond, name in
1271
condition_names.iteritems()
1272
if cond & condition)
1273
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1274
conditions_string)
1275
1276
# Turn the pipe file descriptors into Python file objects
1277
if source not in file_objects:
1278
file_objects[source] = os.fdopen(source, u"r", 1)
1279
if reply_fd not in file_objects:
1280
file_objects[reply_fd] = os.fdopen(reply_fd, u"w", 0)
1281
1282
# Read a line from the file object
1283
cmdline = file_objects[source].readline()
1284
if not cmdline: # Empty line means end of file
1285
# close the IPC pipes
1286
file_objects[source].close()
1287
del file_objects[source]
1288
file_objects[reply_fd].close()
1289
del file_objects[reply_fd]
1290
1291
# Stop calling this function
1292
return False
1293
1294
logger.debug(u"IPC command: %r", cmdline)
1295
1296
# Parse and act on command
1297
cmd, args = cmdline.rstrip(u"\r\n").split(None, 1)
1298
1299
if cmd == u"NOTFOUND":
1300
fpr, address = args.split(None, 1)
1301
logger.warning(u"Client not found for fingerprint: %s, ad"
1302
u"dress: %s", fpr, address)
1303
if self.use_dbus:
1304
# Emit D-Bus signal
1305
mandos_dbus_service.ClientNotFound(fpr, address)
1306
elif cmd == u"DISABLED":
1307
for client in self.clients:
1308
if client.name == args:
1309
logger.warning(u"Client %s is disabled", args)
1310
if self.use_dbus:
1311
# Emit D-Bus signal
1312
client.Rejected()
1313
break
1314
else:
1315
logger.error(u"Unknown client %s is disabled", args)
1316
elif cmd == u"SENDING":
1317
for client in self.clients:
1318
if client.name == args:
1319
logger.info(u"Sending secret to %s", client.name)
1320
client.checked_ok()
1321
if self.use_dbus:
1322
# Emit D-Bus signal
1323
client.GotSecret()
1324
break
1325
else:
1326
logger.error(u"Sending secret to unknown client %s",
1327
args)
1328
elif cmd == u"GETATTR":
1329
attr_name, fpr = args.split(None, 1)
1330
for client in self.clients:
1331
if client.fingerprint == fpr:
1332
attr_value = getattr(client, attr_name, None)
1333
logger.debug("IPC reply: %r", attr_value)
1334
pickle.dump(attr_value, file_objects[reply_fd])
1335
break
1336
else:
1337
logger.error(u"Client %s on address %s requesting "
1338
u"attribute %s not found", fpr, address,
1339
attr_name)
1340
pickle.dump(None, file_objects[reply_fd])
1341
else:
1342
logger.error(u"Unknown IPC command: %r", cmdline)
1343
1344
# Keep calling this function
2761
1345
return True
2762
1346
2763
1347
2764
def rfc3339_duration_to_delta(duration):
2765
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2766
2767
>>> rfc3339_duration_to_delta("P7D")
2768
datetime.timedelta(7)
2769
>>> rfc3339_duration_to_delta("PT60S")
2770
datetime.timedelta(0, 60)
2771
>>> rfc3339_duration_to_delta("PT60M")
2772
datetime.timedelta(0, 3600)
2773
>>> rfc3339_duration_to_delta("PT24H")
2774
datetime.timedelta(1)
2775
>>> rfc3339_duration_to_delta("P1W")
2776
datetime.timedelta(7)
2777
>>> rfc3339_duration_to_delta("PT5M30S")
2778
datetime.timedelta(0, 330)
2779
>>> rfc3339_duration_to_delta("P1DT3M20S")
2780
datetime.timedelta(1, 200)
2781
"""
2782
2783
# Parsing an RFC 3339 duration with regular expressions is not
2784
# possible - there would have to be multiple places for the same
2785
# values, like seconds. The current code, while more esoteric, is
2786
# cleaner without depending on a parsing library. If Python had a
2787
# built-in library for parsing we would use it, but we'd like to
2788
# avoid excessive use of external libraries.
2789
2790
# New type for defining tokens, syntax, and semantics all-in-one
2791
Token = collections.namedtuple("Token", (
2792
"regexp", # To match token; if "value" is not None, must have
2793
# a "group" containing digits
2794
"value", # datetime.timedelta or None
2795
"followers")) # Tokens valid after this token
2796
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2797
# the "duration" ABNF definition in RFC 3339, Appendix A.
2798
token_end = Token(re.compile(r"$"), None, frozenset())
2799
token_second = Token(re.compile(r"(\d+)S"),
2800
datetime.timedelta(seconds=1),
2801
frozenset((token_end, )))
2802
token_minute = Token(re.compile(r"(\d+)M"),
2803
datetime.timedelta(minutes=1),
2804
frozenset((token_second, token_end)))
2805
token_hour = Token(re.compile(r"(\d+)H"),
2806
datetime.timedelta(hours=1),
2807
frozenset((token_minute, token_end)))
2808
token_time = Token(re.compile(r"T"),
2809
None,
2810
frozenset((token_hour, token_minute,
2811
token_second)))
2812
token_day = Token(re.compile(r"(\d+)D"),
2813
datetime.timedelta(days=1),
2814
frozenset((token_time, token_end)))
2815
token_month = Token(re.compile(r"(\d+)M"),
2816
datetime.timedelta(weeks=4),
2817
frozenset((token_day, token_end)))
2818
token_year = Token(re.compile(r"(\d+)Y"),
2819
datetime.timedelta(weeks=52),
2820
frozenset((token_month, token_end)))
2821
token_week = Token(re.compile(r"(\d+)W"),
2822
datetime.timedelta(weeks=1),
2823
frozenset((token_end, )))
2824
token_duration = Token(re.compile(r"P"), None,
2825
frozenset((token_year, token_month,
2826
token_day, token_time,
2827
token_week)))
2828
# Define starting values:
2829
# Value so far
2830
value = datetime.timedelta()
2831
found_token = None
2832
# Following valid tokens
2833
followers = frozenset((token_duration, ))
2834
# String left to parse
2835
s = duration
2836
# Loop until end token is found
2837
while found_token is not token_end:
2838
# Search for any currently valid tokens
2839
for token in followers:
2840
match = token.regexp.match(s)
2841
if match is not None:
2842
# Token found
2843
if token.value is not None:
2844
# Value found, parse digits
2845
factor = int(match.group(1), 10)
2846
# Add to value so far
2847
value += factor * token.value
2848
# Strip token from string
2849
s = token.regexp.sub("", s, 1)
2850
# Go to found token
2851
found_token = token
2852
# Set valid next tokens
2853
followers = found_token.followers
2854
break
2855
else:
2856
# No currently valid tokens were found
2857
raise ValueError("Invalid RFC 3339 duration: {!r}"
2858
.format(duration))
2859
# End token found
2860
return value
2861
2862
2863
1348
def string_to_delta(interval):
2864
1349
"""Parse a string and return a datetime.timedelta
2865
2866
>>> string_to_delta('7d')
1350
1351
>>> string_to_delta(u'7d')
2867
1352
datetime.timedelta(7)
2868
>>> string_to_delta('60s')
1353
>>> string_to_delta(u'60s')
2869
1354
datetime.timedelta(0, 60)
2870
>>> string_to_delta('60m')
1355
>>> string_to_delta(u'60m')
2871
1356
datetime.timedelta(0, 3600)
2872
>>> string_to_delta('24h')
1357
>>> string_to_delta(u'24h')
2873
1358
datetime.timedelta(1)
2874
>>> string_to_delta('1w')
1359
>>> string_to_delta(u'1w')
2875
1360
datetime.timedelta(7)
2876
>>> string_to_delta('5m 30s')
1361
>>> string_to_delta(u'5m 30s')
2877
1362
datetime.timedelta(0, 330)
2878
1363
"""
2879
2880
try:
2881
return rfc3339_duration_to_delta(interval)
2882
except ValueError:
2883
pass
2884
2885
1364
timevalue = datetime.timedelta(0)
2886
1365
for s in interval.split():
2887
1366
try:
2888
suffix = s[-1]
1367
suffix = unicode(s[-1])
2889
1368
value = int(s[:-1])
2890
if suffix == "d":
1369
if suffix == u"d":
2891
1370
delta = datetime.timedelta(value)
2892
elif suffix == "s":
1371
elif suffix == u"s":
2893
1372
delta = datetime.timedelta(0, value)
2894
elif suffix == "m":
1373
elif suffix == u"m":
2895
1374
delta = datetime.timedelta(0, 0, 0, 0, value)
2896
elif suffix == "h":
1375
elif suffix == u"h":
2897
1376
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
2898
elif suffix == "w":
1377
elif suffix == u"w":
2899
1378
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2900
1379
else:
2901
raise ValueError("Unknown suffix {!r}".format(suffix))
2902
except IndexError as e:
2903
raise ValueError(*(e.args))
1380
raise ValueError(u"Unknown suffix %r" % suffix)
1381
except (ValueError, IndexError), e:
1382
raise ValueError(e.message)
2904
1383
timevalue += delta
2905
1384
return timevalue
2906
1385
2907
1386
2908
def daemon(nochdir=False, noclose=False):
1387
def if_nametoindex(interface):
1388
"""Call the C function if_nametoindex(), or equivalent
1389
1390
Note: This function cannot accept a unicode string."""
1391
global if_nametoindex
1392
try:
1393
if_nametoindex = (ctypes.cdll.LoadLibrary
1394
(ctypes.util.find_library(u"c"))
1395
.if_nametoindex)
1396
except (OSError, AttributeError):
1397
logger.warning(u"Doing if_nametoindex the hard way")
1398
def if_nametoindex(interface):
1399
"Get an interface index the hard way, i.e. using fcntl()"
1400
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1401
with contextlib.closing(socket.socket()) as s:
1402
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1403
struct.pack(str(u"16s16x"),
1404
interface))
1405
interface_index = struct.unpack(str(u"I"),
1406
ifreq[16:20])[0]
1407
return interface_index
1408
return if_nametoindex(interface)
1409
1410
1411
def daemon(nochdir = False, noclose = False):
2909
1412
"""See daemon(3). Standard BSD Unix function.
2910
1413
2911
1414
This should really exist as os.daemon, but it doesn't (yet)."""
2912
1415
if os.fork():
2913
1416
sys.exit()
2914
1417
os.setsid()
2915
1418
if not nochdir:
2916
os.chdir("/")
1419
os.chdir(u"/")
2917
1420
if os.fork():
2918
1421
sys.exit()
2919
1422
if not noclose:
2920
1423
# Close all standard open file descriptors
2921
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1424
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2922
1425
if not stat.S_ISCHR(os.fstat(null).st_mode):
2923
1426
raise OSError(errno.ENODEV,
2924
"{} not a character device"
2925
.format(os.devnull))
1427
u"%s not a character device"
1428
% os.path.devnull)
2926
1429
os.dup2(null, sys.stdin.fileno())
2927
1430
os.dup2(null, sys.stdout.fileno())
2928
1431
os.dup2(null, sys.stderr.fileno())
2931
1434
2932
1435
2933
1436
def main():
2934
1437
2935
1438
##################################################################
2936
1439
# Parsing of options, both command line and config file
2937
2938
parser = argparse.ArgumentParser()
2939
parser.add_argument("-v", "--version", action="version",
2940
version="%(prog)s {}".format(version),
2941
help="show version number and exit")
2942
parser.add_argument("-i", "--interface", metavar="IF",
2943
help="Bind to interface IF")
2944
parser.add_argument("-a", "--address",
2945
help="Address to listen for requests on")
2946
parser.add_argument("-p", "--port", type=int,
2947
help="Port number to receive requests on")
2948
parser.add_argument("--check", action="store_true",
2949
help="Run self-test")
2950
parser.add_argument("--debug", action="store_true",
2951
help="Debug mode; run in foreground and log"
2952
" to terminal", default=None)
2953
parser.add_argument("--debuglevel", metavar="LEVEL",
2954
help="Debug level for stdout output")
2955
parser.add_argument("--priority", help="GnuTLS"
2956
" priority string (see GnuTLS documentation)")
2957
parser.add_argument("--servicename",
2958
metavar="NAME", help="Zeroconf service name")
2959
parser.add_argument("--configdir",
2960
default="/etc/mandos", metavar="DIR",
2961
help="Directory to search for configuration"
2962
" files")
2963
parser.add_argument("--no-dbus", action="store_false",
2964
dest="use_dbus", help="Do not provide D-Bus"
2965
" system bus interface", default=None)
2966
parser.add_argument("--no-ipv6", action="store_false",
2967
dest="use_ipv6", help="Do not use IPv6",
2968
default=None)
2969
parser.add_argument("--no-restore", action="store_false",
2970
dest="restore", help="Do not restore stored"
2971
" state", default=None)
2972
parser.add_argument("--socket", type=int,
2973
help="Specify a file descriptor to a network"
2974
" socket to use instead of creating one")
2975
parser.add_argument("--statedir", metavar="DIR",
2976
help="Directory to save/restore state in")
2977
parser.add_argument("--foreground", action="store_true",
2978
help="Run in foreground", default=None)
2979
parser.add_argument("--no-zeroconf", action="store_false",
2980
dest="zeroconf", help="Do not use Zeroconf",
2981
default=None)
2982
2983
options = parser.parse_args()
2984
1440
1441
parser = optparse.OptionParser(version = "%%prog %s" % version)
1442
parser.add_option("-i", u"--interface", type=u"string",
1443
metavar="IF", help=u"Bind to interface IF")
1444
parser.add_option("-a", u"--address", type=u"string",
1445
help=u"Address to listen for requests on")
1446
parser.add_option("-p", u"--port", type=u"int",
1447
help=u"Port number to receive requests on")
1448
parser.add_option("--check", action=u"store_true",
1449
help=u"Run self-test")
1450
parser.add_option("--debug", action=u"store_true",
1451
help=u"Debug mode; run in foreground and log to"
1452
u" terminal")
1453
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1454
u" priority string (see GnuTLS documentation)")
1455
parser.add_option("--servicename", type=u"string",
1456
metavar=u"NAME", help=u"Zeroconf service name")
1457
parser.add_option("--configdir", type=u"string",
1458
default=u"/etc/mandos", metavar=u"DIR",
1459
help=u"Directory to search for configuration"
1460
u" files")
1461
parser.add_option("--no-dbus", action=u"store_false",
1462
dest=u"use_dbus", help=u"Do not provide D-Bus"
1463
u" system bus interface")
1464
parser.add_option("--no-ipv6", action=u"store_false",
1465
dest=u"use_ipv6", help=u"Do not use IPv6")
1466
options = parser.parse_args()[0]
1467
1468
if options.check:
1469
import doctest
1470
doctest.testmod()
1471
sys.exit()
1472
2985
1473
# Default values for config file for server-global settings
2986
if gnutls.has_rawpk:
2987
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
2988
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
2989
else:
2990
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2991
":+SIGN-DSA-SHA256")
2992
server_defaults = {"interface": "",
2993
"address": "",
2994
"port": "",
2995
"debug": "False",
2996
"priority": priority,
2997
"servicename": "Mandos",
2998
"use_dbus": "True",
2999
"use_ipv6": "True",
3000
"debuglevel": "",
3001
"restore": "True",
3002
"socket": "",
3003
"statedir": "/var/lib/mandos",
3004
"foreground": "False",
3005
"zeroconf": "True",
3006
}
3007
del priority
3008
1474
server_defaults = { u"interface": u"",
1475
u"address": u"",
1476
u"port": u"",
1477
u"debug": u"False",
1478
u"priority":
1479
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1480
u"servicename": u"Mandos",
1481
u"use_dbus": u"True",
1482
u"use_ipv6": u"True",
1483
}
1484
3009
1485
# Parse config file for server-global settings
3010
server_config = configparser.ConfigParser(server_defaults)
1486
server_config = configparser.SafeConfigParser(server_defaults)
3011
1487
del server_defaults
3012
server_config.read(os.path.join(options.configdir, "mandos.conf"))
3013
# Convert the ConfigParser object to a dict
1488
server_config.read(os.path.join(options.configdir,
1489
u"mandos.conf"))
1490
# Convert the SafeConfigParser object to a dict
3014
1491
server_settings = server_config.defaults()
3015
1492
# Use the appropriate methods on the non-string config options
3016
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3017
"foreground", "zeroconf"):
3018
server_settings[option] = server_config.getboolean("DEFAULT",
1493
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1494
server_settings[option] = server_config.getboolean(u"DEFAULT",
3019
1495
option)
3020
1496
if server_settings["port"]:
3021
server_settings["port"] = server_config.getint("DEFAULT",
3022
"port")
3023
if server_settings["socket"]:
3024
server_settings["socket"] = server_config.getint("DEFAULT",
3025
"socket")
3026
# Later, stdin will, and stdout and stderr might, be dup'ed
3027
# over with an opened os.devnull. But we don't want this to
3028
# happen with a supplied network socket.
3029
if 0 <= server_settings["socket"] <= 2:
3030
server_settings["socket"] = os.dup(server_settings
3031
["socket"])
1497
server_settings["port"] = server_config.getint(u"DEFAULT",
1498
u"port")
3032
1499
del server_config
3033
1500
3034
1501
# Override the settings from the config file with command line
3035
1502
# options, if set.
3036
for option in ("interface", "address", "port", "debug",
3037
"priority", "servicename", "configdir", "use_dbus",
3038
"use_ipv6", "debuglevel", "restore", "statedir",
3039
"socket", "foreground", "zeroconf"):
1503
for option in (u"interface", u"address", u"port", u"debug",
1504
u"priority", u"servicename", u"configdir",
1505
u"use_dbus", u"use_ipv6"):
3040
1506
value = getattr(options, option)
3041
1507
if value is not None:
3042
1508
server_settings[option] = value
3043
1509
del options
3044
1510
# Force all strings to be unicode
3045
1511
for option in server_settings.keys():
3046
if isinstance(server_settings[option], bytes):
3047
server_settings[option] = (server_settings[option]
3048
.decode("utf-8"))
3049
# Force all boolean options to be boolean
3050
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3051
"foreground", "zeroconf"):
3052
server_settings[option] = bool(server_settings[option])
3053
# Debug implies foreground
3054
if server_settings["debug"]:
3055
server_settings["foreground"] = True
1512
if type(server_settings[option]) is str:
1513
server_settings[option] = unicode(server_settings[option])
3056
1514
# Now we have our good server settings in "server_settings"
3057
1515
3058
1516
##################################################################
3059
3060
if (not server_settings["zeroconf"]
3061
and not (server_settings["port"]
3062
or server_settings["socket"] != "")):
3063
parser.error("Needs port or socket to work without Zeroconf")
3064
1517
3065
1518
# For convenience
3066
debug = server_settings["debug"]
3067
debuglevel = server_settings["debuglevel"]
3068
use_dbus = server_settings["use_dbus"]
3069
use_ipv6 = server_settings["use_ipv6"]
3070
stored_state_path = os.path.join(server_settings["statedir"],
3071
stored_state_file)
3072
foreground = server_settings["foreground"]
3073
zeroconf = server_settings["zeroconf"]
3074
3075
if debug:
3076
initlogger(debug, logging.DEBUG)
3077
else:
3078
if not debuglevel:
3079
initlogger(debug)
3080
else:
3081
level = getattr(logging, debuglevel.upper())
3082
initlogger(debug, level)
3083
3084
if server_settings["servicename"] != "Mandos":
3085
syslogger.setFormatter(
3086
logging.Formatter('Mandos ({}) [%(process)d]:'
3087
' %(levelname)s: %(message)s'.format(
3088
server_settings["servicename"])))
3089
1519
debug = server_settings[u"debug"]
1520
use_dbus = server_settings[u"use_dbus"]
1521
use_ipv6 = server_settings[u"use_ipv6"]
1522
1523
if not debug:
1524
syslogger.setLevel(logging.WARNING)
1525
console.setLevel(logging.WARNING)
1526
1527
if server_settings[u"servicename"] != u"Mandos":
1528
syslogger.setFormatter(logging.Formatter
1529
(u'Mandos (%s) [%%(process)d]:'
1530
u' %%(levelname)s: %%(message)s'
1531
% server_settings[u"servicename"]))
1532
3090
1533
# Parse config file with clients
3091
client_config = configparser.ConfigParser(Client.client_defaults)
3092
client_config.read(os.path.join(server_settings["configdir"],
3093
"clients.conf"))
3094
1534
client_defaults = { u"timeout": u"1h",
1535
u"interval": u"5m",
1536
u"checker": u"fping -q -- %%(host)s",
1537
u"host": u"",
1538
}
1539
client_config = configparser.SafeConfigParser(client_defaults)
1540
client_config.read(os.path.join(server_settings[u"configdir"],
1541
u"clients.conf"))
1542
3095
1543
global mandos_dbus_service
3096
1544
mandos_dbus_service = None
3097
3098
socketfd = None
3099
if server_settings["socket"] != "":
3100
socketfd = server_settings["socket"]
3101
tcp_server = MandosServer(
3102
(server_settings["address"], server_settings["port"]),
3103
ClientHandler,
3104
interface=(server_settings["interface"] or None),
3105
use_ipv6=use_ipv6,
3106
gnutls_priority=server_settings["priority"],
3107
use_dbus=use_dbus,
3108
socketfd=socketfd)
3109
if not foreground:
3110
pidfilename = "/run/mandos.pid"
3111
if not os.path.isdir("/run/."):
3112
pidfilename = "/var/run/mandos.pid"
3113
pidfile = None
3114
try:
3115
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3116
except IOError as e:
3117
logger.error("Could not open file %r", pidfilename,
3118
exc_info=e)
3119
3120
for name, group in (("_mandos", "_mandos"),
3121
("mandos", "mandos"),
3122
("nobody", "nogroup")):
3123
try:
3124
uid = pwd.getpwnam(name).pw_uid
3125
gid = pwd.getpwnam(group).pw_gid
3126
break
1545
1546
tcp_server = MandosServer((server_settings[u"address"],
1547
server_settings[u"port"]),
1548
ClientHandler,
1549
interface=server_settings[u"interface"],
1550
use_ipv6=use_ipv6,
1551
gnutls_priority=
1552
server_settings[u"priority"],
1553
use_dbus=use_dbus)
1554
pidfilename = u"/var/run/mandos.pid"
1555
try:
1556
pidfile = open(pidfilename, u"w")
1557
except IOError:
1558
logger.error(u"Could not open file %r", pidfilename)
1559
1560
try:
1561
uid = pwd.getpwnam(u"_mandos").pw_uid
1562
gid = pwd.getpwnam(u"_mandos").pw_gid
1563
except KeyError:
1564
try:
1565
uid = pwd.getpwnam(u"mandos").pw_uid
1566
gid = pwd.getpwnam(u"mandos").pw_gid
3127
1567
except KeyError:
3128
continue
3129
else:
3130
uid = 65534
3131
gid = 65534
1568
try:
1569
uid = pwd.getpwnam(u"nobody").pw_uid
1570
gid = pwd.getpwnam(u"nobody").pw_gid
1571
except KeyError:
1572
uid = 65534
1573
gid = 65534
3132
1574
try:
3133
1575
os.setgid(gid)
3134
1576
os.setuid(uid)
3135
if debug:
3136
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3137
gid))
3138
except OSError as error:
3139
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3140
.format(uid, gid, os.strerror(error.errno)))
3141
if error.errno != errno.EPERM:
3142
raise
3143
1577
except OSError, error:
1578
if error[0] != errno.EPERM:
1579
raise error
1580
1581
# Enable all possible GnuTLS debugging
3144
1582
if debug:
3145
# Enable all possible GnuTLS debugging
3146
3147
1583
# "Use a log level over 10 to enable all debugging options."
3148
1584
# - GnuTLS manual
3149
gnutls.global_set_log_level(11)
3150
3151
@gnutls.log_func
1585
gnutls.library.functions.gnutls_global_set_log_level(11)
1586
1587
@gnutls.library.types.gnutls_log_func
3152
1588
def debug_gnutls(level, string):
3153
logger.debug("GnuTLS: %s", string[:-1])
3154
3155
gnutls.global_set_log_function(debug_gnutls)
3156
3157
# Redirect stdin so all checkers get /dev/null
3158
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
3159
os.dup2(null, sys.stdin.fileno())
3160
if null > 2:
3161
os.close(null)
3162
3163
# Need to fork before connecting to D-Bus
3164
if not foreground:
3165
# Close all input and output, do double fork, etc.
3166
daemon()
3167
3168
if gi.version_info < (3, 10, 2):
3169
# multiprocessing will use threads, so before we use GLib we
3170
# need to inform GLib that threads will be used.
3171
GLib.threads_init()
3172
1589
logger.debug(u"GnuTLS: %s", string[:-1])
1590
1591
(gnutls.library.functions
1592
.gnutls_global_set_log_function(debug_gnutls))
1593
3173
1594
global main_loop
3174
1595
# From the Avahi example code
3175
DBusGMainLoop(set_as_default=True)
3176
main_loop = GLib.MainLoop()
1596
DBusGMainLoop(set_as_default=True )
1597
main_loop = gobject.MainLoop()
3177
1598
bus = dbus.SystemBus()
3178
1599
# End of Avahi example code
3179
1600
if use_dbus:
3180
1601
try:
3181
bus_name = dbus.service.BusName("se.recompile.Mandos",
3182
bus,
3183
do_not_queue=True)
3184
old_bus_name = dbus.service.BusName(
3185
"se.bsnet.fukt.Mandos", bus,
3186
do_not_queue=True)
3187
except dbus.exceptions.DBusException as e:
3188
logger.error("Disabling D-Bus:", exc_info=e)
1602
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
1603
bus, do_not_queue=True)
1604
except dbus.exceptions.NameExistsException, e:
1605
logger.error(unicode(e) + u", disabling D-Bus")
3189
1606
use_dbus = False
3190
server_settings["use_dbus"] = False
1607
server_settings[u"use_dbus"] = False
3191
1608
tcp_server.use_dbus = False
3192
if zeroconf:
3193
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3194
service = AvahiServiceToSyslog(
3195
name=server_settings["servicename"],
3196
servicetype="_mandos._tcp",
3197
protocol=protocol,
3198
bus=bus)
3199
if server_settings["interface"]:
3200
service.interface = if_nametoindex(
3201
server_settings["interface"].encode("utf-8"))
3202
3203
global multiprocessing_manager
3204
multiprocessing_manager = multiprocessing.Manager()
3205
1609
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1610
service = AvahiService(name = server_settings[u"servicename"],
1611
servicetype = u"_mandos._tcp",
1612
protocol = protocol, bus = bus)
1613
if server_settings["interface"]:
1614
service.interface = (if_nametoindex
1615
(str(server_settings[u"interface"])))
1616
3206
1617
client_class = Client
3207
1618
if use_dbus:
3208
client_class = functools.partial(ClientDBus, bus=bus)
3209
3210
client_settings = Client.config_parser(client_config)
3211
old_client_settings = {}
3212
clients_data = {}
3213
3214
# This is used to redirect stdout and stderr for checker processes
3215
global wnull
3216
wnull = open(os.devnull, "w") # A writable /dev/null
3217
# Only used if server is running in foreground but not in debug
3218
# mode
3219
if debug or not foreground:
3220
wnull.close()
3221
3222
# Get client data and settings from last running state.
3223
if server_settings["restore"]:
3224
try:
3225
with open(stored_state_path, "rb") as stored_state:
3226
if sys.version_info.major == 2:
3227
clients_data, old_client_settings = pickle.load(
3228
stored_state)
3229
else:
3230
bytes_clients_data, bytes_old_client_settings = (
3231
pickle.load(stored_state, encoding="bytes"))
3232
# Fix bytes to strings
3233
# clients_data
3234
# .keys()
3235
clients_data = {(key.decode("utf-8")
3236
if isinstance(key, bytes)
3237
else key): value
3238
for key, value in
3239
bytes_clients_data.items()}
3240
del bytes_clients_data
3241
for key in clients_data:
3242
value = {(k.decode("utf-8")
3243
if isinstance(k, bytes) else k): v
3244
for k, v in
3245
clients_data[key].items()}
3246
clients_data[key] = value
3247
# .client_structure
3248
value["client_structure"] = [
3249
(s.decode("utf-8")
3250
if isinstance(s, bytes)
3251
else s) for s in
3252
value["client_structure"]]
3253
# .name & .host
3254
for k in ("name", "host"):
3255
if isinstance(value[k], bytes):
3256
value[k] = value[k].decode("utf-8")
3257
if "key_id" not in value:
3258
value["key_id"] = ""
3259
elif "fingerprint" not in value:
3260
value["fingerprint"] = ""
3261
# old_client_settings
3262
# .keys()
3263
old_client_settings = {
3264
(key.decode("utf-8")
3265
if isinstance(key, bytes)
3266
else key): value
3267
for key, value in
3268
bytes_old_client_settings.items()}
3269
del bytes_old_client_settings
3270
# .host
3271
for value in old_client_settings.values():
3272
if isinstance(value["host"], bytes):
3273
value["host"] = (value["host"]
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))
3340
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
1619
client_class = functools.partial(ClientDBus, bus = bus)
1620
tcp_server.clients.update(set(
1621
client_class(name = section,
1622
config= dict(client_config.items(section)))
1623
for section in client_config.sections()))
3366
1624
if not tcp_server.clients:
3367
logger.warning("No clients defined")
3368
3369
if not foreground:
3370
if pidfile is not None:
1625
logger.warning(u"No clients defined")
1626
1627
if debug:
1628
# Redirect stdin so all checkers get /dev/null
1629
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1630
os.dup2(null, sys.stdin.fileno())
1631
if null > 2:
1632
os.close(null)
1633
else:
1634
# No console logging
1635
logger.removeHandler(console)
1636
# Close all input and output, do double fork, etc.
1637
daemon()
1638
1639
try:
1640
with pidfile:
3371
1641
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)
1642
pidfile.write(str(pid) + "\n")
3378
1643
del pidfile
3379
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
1644
except IOError:
1645
logger.error(u"Could not write to file %r with PID %d",
1646
pidfilename, pid)
1647
except NameError:
1648
# "pidfile" was never created
1649
pass
1650
del pidfilename
1651
1652
if not debug:
1653
signal.signal(signal.SIGINT, signal.SIG_IGN)
1654
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1655
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1656
3385
1657
if use_dbus:
3386
3387
@alternate_dbus_interfaces(
3388
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3389
class MandosDBusService(DBusObjectWithObjectManager):
1658
class MandosDBusService(dbus.service.Object):
3390
1659
"""A D-Bus proxy object"""
3391
3392
1660
def __init__(self):
3393
dbus.service.Object.__init__(self, bus, "/")
3394
3395
_interface = "se.recompile.Mandos"
3396
3397
@dbus.service.signal(_interface, signature="o")
1661
dbus.service.Object.__init__(self, bus, u"/")
1662
_interface = u"se.bsnet.fukt.Mandos"
1663
1664
@dbus.service.signal(_interface, signature=u"o")
3398
1665
def ClientAdded(self, objpath):
3399
1666
"D-Bus signal"
3400
1667
pass
3401
3402
@dbus.service.signal(_interface, signature="ss")
3403
def ClientNotFound(self, key_id, address):
1668
1669
@dbus.service.signal(_interface, signature=u"ss")
1670
def ClientNotFound(self, fingerprint, address):
3404
1671
"D-Bus signal"
3405
1672
pass
3406
3407
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3408
"true"})
3409
@dbus.service.signal(_interface, signature="os")
1673
1674
@dbus.service.signal(_interface, signature=u"os")
3410
1675
def ClientRemoved(self, objpath, name):
3411
1676
"D-Bus signal"
3412
1677
pass
3413
3414
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3415
"true"})
3416
@dbus.service.method(_interface, out_signature="ao")
1678
1679
@dbus.service.method(_interface, out_signature=u"ao")
3417
1680
def GetAllClients(self):
3418
1681
"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"})
1682
return dbus.Array(c.dbus_object_path
1683
for c in tcp_server.clients)
1684
3424
1685
@dbus.service.method(_interface,
3425
out_signature="a{oa{sv}}")
1686
out_signature=u"a{oa{sv}}")
3426
1687
def GetAllClientsWithProperties(self):
3427
1688
"D-Bus method"
3428
1689
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")
1690
((c.dbus_object_path, c.GetAll(u""))
1691
for c in tcp_server.clients),
1692
signature=u"oa{sv}")
1693
1694
@dbus.service.method(_interface, in_signature=u"o")
3435
1695
def RemoveClient(self, object_path):
3436
1696
"D-Bus method"
3437
for c in tcp_server.clients.values():
1697
for c in tcp_server.clients:
3438
1698
if c.dbus_object_path == object_path:
3439
del tcp_server.clients[c.name]
1699
tcp_server.clients.remove(c)
3440
1700
c.remove_from_connection()
3441
# Don't signal the disabling
1701
# Don't signal anything except ClientRemoved
3442
1702
c.disable(quiet=True)
3443
# Emit D-Bus signal for removal
3444
self.client_removed_signal(c)
1703
# Emit D-Bus signal
1704
self.ClientRemoved(object_path, c.name)
3445
1705
return
3446
1706
raise KeyError(object_path)
3447
1707
3448
1708
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
1709
3486
1710
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
1711
3493
1712
def cleanup():
3494
1713
"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
1714
service.cleanup()
1715
3557
1716
while tcp_server.clients:
3558
name, client = tcp_server.clients.popitem()
1717
client = tcp_server.clients.pop()
3559
1718
if use_dbus:
3560
1719
client.remove_from_connection()
3561
# Don't signal the disabling
1720
client.disable_hook = None
1721
# Don't signal anything except ClientRemoved
3562
1722
client.disable(quiet=True)
3563
# Emit D-Bus signal for removal
3564
1723
if use_dbus:
3565
mandos_dbus_service.client_removed_signal(client)
3566
client_settings.clear()
3567
1724
# Emit D-Bus signal
1725
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
1726
client.name)
1727
3568
1728
atexit.register(cleanup)
3569
3570
for client in tcp_server.clients.values():
1729
1730
for client in tcp_server.clients:
3571
1731
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
1732
# Emit D-Bus signal
1733
mandos_dbus_service.ClientAdded(client.dbus_object_path)
1734
client.enable()
1735
3578
1736
tcp_server.enable()
3579
1737
tcp_server.server_activate()
3580
1738
3581
1739
# Find out what port we got
3582
if zeroconf:
3583
service.port = tcp_server.socket.getsockname()[1]
1740
service.port = tcp_server.socket.getsockname()[1]
3584
1741
if use_ipv6:
3585
logger.info("Now listening on address %r, port %d,"
3586
" flowinfo %d, scope_id %d",
3587
*tcp_server.socket.getsockname())
1742
logger.info(u"Now listening on address %r, port %d,"
1743
" flowinfo %d, scope_id %d"
1744
% tcp_server.socket.getsockname())
3588
1745
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
1746
logger.info(u"Now listening on address %r, port %d"
1747
% tcp_server.socket.getsockname())
1748
1749
#service.interface = tcp_server.socket.getsockname()[3]
1750
3594
1751
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(tcp_server.fileno(), GLib.IO_IN,
3606
lambda *args, **kwargs:
3607
(tcp_server.handle_request
3608
(*args[2:], **kwargs) or True))
3609
3610
logger.debug("Starting main loop")
1752
# From the Avahi example code
1753
try:
1754
service.activate()
1755
except dbus.exceptions.DBusException, error:
1756
logger.critical(u"DBusException: %s", error)
1757
cleanup()
1758
sys.exit(1)
1759
# End of Avahi example code
1760
1761
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
1762
lambda *args, **kwargs:
1763
(tcp_server.handle_request
1764
(*args[2:], **kwargs) or True))
1765
1766
logger.debug(u"Starting main loop")
3611
1767
main_loop.run()
3612
except AvahiError as error:
3613
logger.critical("Avahi Error", exc_info=error)
1768
except AvahiError, error:
1769
logger.critical(u"AvahiError: %s", error)
3614
1770
cleanup()
3615
1771
sys.exit(1)
3616
1772
except KeyboardInterrupt:
3617
1773
if debug:
3618
print("", file=sys.stderr)
3619
logger.debug("Server received KeyboardInterrupt")
3620
logger.debug("Server exiting")
1774
print >> sys.stderr
1775
logger.debug(u"Server received KeyboardInterrupt")
1776
logger.debug(u"Server exiting")
3621
1777
# Must run before the D-Bus bus name gets deregistered
3622
1778
cleanup()
3623
1779
3624
3625
def should_only_run_tests():
3626
parser = argparse.ArgumentParser(add_help=False)
3627
parser.add_argument("--check", action='store_true')
3628
args, unknown_args = parser.parse_known_args()
3629
run_tests = args.check
3630
if run_tests:
3631
# Remove --check argument from sys.argv
3632
sys.argv[1:] = unknown_args
3633
return run_tests
3634
3635
# Add all tests from doctest strings
3636
def load_tests(loader, tests, none):
3637
import doctest
3638
tests.addTests(doctest.DocTestSuite())
3639
return tests
3640
3641
1780
if __name__ == '__main__':
3642
try:
3643
if should_only_run_tests():
3644
# Call using ./mandos --check [--verbose]
3645
unittest.main()
3646
else:
3647
main()
3648
finally:
3649
logging.shutdown()
1781
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0