To get this branch, use:
bzr branch
http://bzr.recompile.se/loggerhead/mandos/release
« back to all changes in this revision
Viewing changes to mandos
- browse files at revision 24.1.157
- compare with another revision
- download diff
- download tarball
- view history from revision 24.1.157
- Committer: Björn Påhlsson
- Date: 2010-09-07 18:48:56 UTC
- mto: (237.7.1 mandos)
- mto: This revision was merged to the branch mainline in revision 270.
- Revision ID: belorn@fukt.bsnet.se-20100907184856-waz6cvxbm7ranha2
added the actually plugin file for plymouth
- files added:
- initramfs-tools-hook-conf
- files removed:
- DBUS-API
- debian/source
- debian/tests
- debian/upstream
- dracut-module
- network-hooks.d
- plugin-helpers
- files modified:
- .bzrignore
added
removed
mandos
1
#!/usr/bin/python3 -b
2
# -*- mode: python; after-save-hook: (lambda () (let ((command (if (fboundp 'file-local-name) (file-local-name (buffer-file-name)) (or (file-remote-p (buffer-file-name) 'localname) (buffer-file-name))))) (if (= (progn (if (get-buffer "*Test*") (kill-buffer "*Test*")) (process-file-shell-command (format "%s --check" (shell-quote-argument command)) nil "*Test*")) 0) (let ((w (get-buffer-window "*Test*"))) (if w (delete-window w))) (progn (with-current-buffer "*Test*" (compilation-mode)) (display-buffer "*Test*" '(display-buffer-in-side-window)))))); coding: utf-8 -*-
3
#
1
#!/usr/bin/python
2
# -*- mode: python; coding: utf-8 -*-
3
#
4
4
# Mandos server - give out binary blobs to connecting clients.
5
#
5
#
6
6
# This program is partly derived from an example program for an Avahi
7
7
# service publisher, downloaded from
8
8
# <http://avahi.org/wiki/PythonPublishExample>. This includes the
9
9
# methods "add", "remove", "server_state_changed",
10
10
# "entry_group_state_changed", "cleanup", and "activate" in the
11
11
# "AvahiService" class, and some lines in "main".
12
#
12
#
13
13
# Everything else is
14
# Copyright © 2008-2019 Teddy Hogeborn
15
# Copyright © 2008-2019 Björn Påhlsson
16
#
17
# This file is part of Mandos.
18
#
19
# Mandos is free software: you can redistribute it and/or modify it
20
# under the terms of the GNU General Public License as published by
14
# Copyright © 2008,2009 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
62
import cPickle as pickle
73
63
import multiprocessing
74
import types
75
import binascii
76
import tempfile
77
import itertools
78
import collections
79
import codecs
80
import unittest
81
64
82
65
import dbus
83
66
import dbus.service
84
import gi
85
from gi.repository import GLib
67
import gobject
68
import avahi
86
69
from dbus.mainloop.glib import DBusGMainLoop
87
70
import ctypes
88
71
import ctypes.util
89
72
import xml.dom.minidom
90
73
import inspect
91
74
92
if sys.version_info.major == 2:
93
__metaclass__ = type
94
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
75
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
76
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
105
77
except AttributeError:
106
78
try:
107
# This is where SO_BINDTODEVICE was up to and including Python
108
# 2.6, and also 3.2:
109
79
from IN import SO_BINDTODEVICE
110
80
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 = "1.8.9"
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 == b"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 == b"gpg" or self.gpg.endswith(b"/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
81
SO_BINDTODEVICE = None
82
83
84
version = "1.0.14"
85
86
#logger = logging.getLogger(u'mandos')
87
logger = logging.Logger(u'mandos')
88
syslogger = (logging.handlers.SysLogHandler
89
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
90
address = "/dev/log"))
91
syslogger.setFormatter(logging.Formatter
92
(u'Mandos [%(process)d]: %(levelname)s:'
93
u' %(message)s'))
94
logger.addHandler(syslogger)
95
96
console = logging.StreamHandler()
97
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
98
u' %(levelname)s:'
99
u' %(message)s'))
100
logger.addHandler(console)
316
101
317
102
class AvahiError(Exception):
318
103
def __init__(self, value, *args, **kwargs):
319
104
self.value = value
320
return super(AvahiError, self).__init__(value, *args,
321
**kwargs)
322
105
super(AvahiError, self).__init__(value, *args, **kwargs)
106
def __unicode__(self):
107
return unicode(repr(self.value))
323
108
324
109
class AvahiServiceError(AvahiError):
325
110
pass
326
111
327
328
112
class AvahiGroupError(AvahiError):
329
113
pass
330
114
331
115
332
class AvahiService:
116
class AvahiService(object):
333
117
"""An Avahi (Zeroconf) service.
334
118
335
119
Attributes:
336
120
interface: integer; avahi.IF_UNSPEC or an interface index.
337
121
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>
122
name: string; Example: u'Mandos'
123
type: string; Example: u'_mandos._tcp'.
124
See <http://www.dns-sd.org/ServiceTypes.html>
341
125
port: integer; what port to announce
342
126
TXT: list of strings; TXT record for the service
343
127
domain: string; Domain to publish on, default to .local if empty.
349
133
server: D-Bus Server
350
134
bus: dbus.SystemBus()
351
135
"""
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):
136
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
137
servicetype = None, port = None, TXT = None,
138
domain = u"", host = u"", max_renames = 32768,
139
protocol = avahi.PROTO_UNSPEC, bus = None):
364
140
self.interface = interface
365
141
self.name = name
366
142
self.type = servicetype
374
150
self.group = None # our entry group
375
151
self.server = None
376
152
self.bus = bus
377
self.entry_group_state_changed_match = None
378
379
def rename(self, remove=True):
153
def rename(self):
380
154
"""Derived from the Avahi example code"""
381
155
if self.rename_count >= self.max_renames:
382
logger.critical("No suitable Zeroconf service name found"
383
" after %i retries, exiting.",
156
logger.critical(u"No suitable Zeroconf service name found"
157
u" after %i retries, exiting.",
384
158
self.rename_count)
385
raise AvahiServiceError("Too many renames")
386
self.name = str(
387
self.server.GetAlternativeServiceName(self.name))
159
raise AvahiServiceError(u"Too many renames")
160
self.name = unicode(self.server.GetAlternativeServiceName(self.name))
161
logger.info(u"Changing Zeroconf service name to %r ...",
162
self.name)
163
syslogger.setFormatter(logging.Formatter
164
(u'Mandos (%s) [%%(process)d]:'
165
u' %%(levelname)s: %%(message)s'
166
% self.name))
167
self.remove()
168
self.add()
388
169
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
170
def remove(self):
406
171
"""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
172
if self.group is not None:
411
173
self.group.Reset()
412
413
174
def add(self):
414
175
"""Derived from the Avahi example code"""
415
self.remove()
416
176
if self.group is None:
417
177
self.group = dbus.Interface(
418
178
self.bus.get_object(avahi.DBUS_NAME,
419
179
self.server.EntryGroupNew()),
420
180
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' ...",
181
self.group.connect_to_signal('StateChanged',
182
self
183
.entry_group_state_changed)
184
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
425
185
self.name, self.type)
426
186
self.group.AddService(
427
187
self.interface,
432
192
dbus.UInt16(self.port),
433
193
avahi.string_array_to_txt_array(self.TXT))
434
194
self.group.Commit()
435
436
195
def entry_group_state_changed(self, state, error):
437
196
"""Derived from the Avahi example code"""
438
logger.debug("Avahi entry group state change: %i", state)
439
197
logger.debug(u"Avahi entry group state change: %i", state)
198
440
199
if state == avahi.ENTRY_GROUP_ESTABLISHED:
441
logger.debug("Zeroconf service established.")
200
logger.debug(u"Zeroconf service established.")
442
201
elif state == avahi.ENTRY_GROUP_COLLISION:
443
logger.info("Zeroconf service name collision.")
202
logger.warning(u"Zeroconf service name collision.")
444
203
self.rename()
445
204
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
205
logger.critical(u"Avahi: Error in group state changed %s",
206
unicode(error))
207
raise AvahiGroupError(u"State changed: %s"
208
% unicode(error))
450
209
def cleanup(self):
451
210
"""Derived from the Avahi example code"""
452
211
if self.group is not None:
453
try:
454
self.group.Free()
455
except (dbus.exceptions.UnknownMethodException,
456
dbus.exceptions.DBusException):
457
pass
212
self.group.Free()
458
213
self.group = None
459
self.remove()
460
461
def server_state_changed(self, state, error=None):
214
def server_state_changed(self, state):
462
215
"""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()
216
logger.debug(u"Avahi server state change: %i", state)
217
if state == avahi.SERVER_COLLISION:
218
logger.error(u"Zeroconf server name collision")
219
self.remove()
477
220
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
221
self.add()
496
222
def activate(self):
497
223
"""Derived from the Avahi example code"""
498
224
if self.server is None:
499
225
self.server = dbus.Interface(
500
226
self.bus.get_object(avahi.DBUS_NAME,
501
avahi.DBUS_PATH_SERVER,
502
follow_name_owner_changes=True),
227
avahi.DBUS_PATH_SERVER),
503
228
avahi.DBUS_INTERFACE_SERVER)
504
self.server.connect_to_signal("StateChanged",
505
self.server_state_changed)
229
self.server.connect_to_signal(u"StateChanged",
230
self.server_state_changed)
506
231
self.server_state_changed(self.server.GetState())
507
232
508
233
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:
234
class Client(object):
832
235
"""A representation of a client host served by this server.
833
236
834
237
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
238
name: string; from the config file, used in log messages and
239
D-Bus identifiers
240
fingerprint: string (40 or 32 hexadecimal digits); used to
241
uniquely identify the client
242
secret: bytestring; sent verbatim (over TLS) to client
243
host: string; available for use by the checker command
847
244
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
245
last_enabled: datetime.datetime(); (UTC)
852
246
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
247
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
248
timeout: datetime.timedelta(); How long from last_checked_ok
871
249
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()
250
interval: datetime.timedelta(); How often to start a new checker
251
disable_hook: If set, called by disable() as disable_hook(self)
252
checker: subprocess.Popen(); a running checker process used
253
to see if the client lives.
254
'None' if no process is running.
255
checker_initiator_tag: a gobject event source tag, or None
256
disable_initiator_tag: - '' -
257
checker_callback_tag: - '' -
258
checker_command: string; External command which is run to check if
259
client lives. %() expansions are done at
260
runtime with vars(self) as dict, so that for
261
instance %(name)s can be used in the command.
262
current_checker_command: string; current running checker_command
263
approved_delay: datetime.timedelta(); Time to wait for approval
264
_approved: bool(); 'None' if not yet approved/disapproved
265
approved_duration: datetime.timedelta(); Duration of one approval
877
266
"""
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
267
896
268
@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):
269
def _timedelta_to_milliseconds(td):
270
"Convert a datetime.timedelta() to milliseconds"
271
return ((td.days * 24 * 60 * 60 * 1000)
272
+ (td.seconds * 1000)
273
+ (td.microseconds // 1000))
274
275
def timeout_milliseconds(self):
276
"Return the 'timeout' attribute in milliseconds"
277
return self._timedelta_to_milliseconds(self.timeout)
278
279
def interval_milliseconds(self):
280
"Return the 'interval' attribute in milliseconds"
281
return self._timedelta_to_milliseconds(self.interval)
282
283
def approved_delay_milliseconds(self):
284
return self._timedelta_to_milliseconds(self.approved_delay)
285
286
def __init__(self, name = None, disable_hook=None, config=None):
287
"""Note: the 'checker' key in 'config' sets the
288
'checker_command' attribute and *not* the 'checker'
289
attribute."""
951
290
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)
291
if config is None:
292
config = {}
293
logger.debug(u"Creating client %r", self.name)
294
# Uppercase and remove spaces from fingerprint for later
295
# comparison purposes with return value from the fingerprint()
296
# function
297
self.fingerprint = (config[u"fingerprint"].upper()
298
.replace(u" ", u""))
299
logger.debug(u" Fingerprint: %s", self.fingerprint)
300
if u"secret" in config:
301
self.secret = config[u"secret"].decode(u"base64")
302
elif u"secfile" in config:
303
with open(os.path.expanduser(os.path.expandvars
304
(config[u"secfile"])),
305
"rb") as secfile:
306
self.secret = secfile.read()
965
307
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
308
raise TypeError(u"No secret or secfile for client %s"
309
% self.name)
310
self.host = config.get(u"host", u"")
311
self.created = datetime.datetime.utcnow()
312
self.enabled = False
313
self.last_enabled = None
314
self.last_checked_ok = None
315
self.timeout = string_to_delta(config[u"timeout"])
316
self.interval = string_to_delta(config[u"interval"])
317
self.disable_hook = disable_hook
976
318
self.checker = None
977
319
self.checker_initiator_tag = None
978
320
self.disable_initiator_tag = None
979
321
self.checker_callback_tag = None
322
self.checker_command = config[u"checker"]
980
323
self.current_checker_command = None
981
self.approved = None
324
self.last_connect = None
325
self._approved = None
326
self.approved_by_default = config.get(u"approved_by_default",
327
True)
982
328
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
329
self.approved_delay = string_to_delta(
330
config[u"approved_delay"])
331
self.approved_duration = string_to_delta(
332
config[u"approved_duration"])
333
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
334
996
335
def send_changedstate(self):
997
with self.changedstate:
998
self.changedstate.notify_all()
999
336
self.changedstate.acquire()
337
self.changedstate.notify_all()
338
self.changedstate.release()
339
1000
340
def enable(self):
1001
341
"""Start this client's checker and timeout hooks"""
1002
if getattr(self, "enabled", False):
342
if getattr(self, u"enabled", False):
1003
343
# Already enabled
1004
344
return
1005
self.expires = datetime.datetime.utcnow() + self.timeout
1006
self.enabled = True
345
self.send_changedstate()
1007
346
self.last_enabled = datetime.datetime.utcnow()
1008
self.init_checker()
1009
self.send_changedstate()
1010
347
# Schedule a new checker to be started an 'interval' from now,
348
# and every interval from then on.
349
self.checker_initiator_tag = (gobject.timeout_add
350
(self.interval_milliseconds(),
351
self.start_checker))
352
# Schedule a disable() when 'timeout' has passed
353
self.disable_initiator_tag = (gobject.timeout_add
354
(self.timeout_milliseconds(),
355
self.disable))
356
self.enabled = True
357
# Also start a new checker *right now*.
358
self.start_checker()
359
1011
360
def disable(self, quiet=True):
1012
361
"""Disable this client."""
1013
362
if not getattr(self, "enabled", False):
1014
363
return False
1015
364
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)
365
self.send_changedstate()
366
if not quiet:
367
logger.info(u"Disabling client %s", self.name)
368
if getattr(self, u"disable_initiator_tag", False):
369
gobject.source_remove(self.disable_initiator_tag)
1019
370
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)
371
if getattr(self, u"checker_initiator_tag", False):
372
gobject.source_remove(self.checker_initiator_tag)
1023
373
self.checker_initiator_tag = None
1024
374
self.stop_checker()
375
if self.disable_hook:
376
self.disable_hook(self)
1025
377
self.enabled = False
1026
if not quiet:
1027
self.send_changedstate()
1028
# Do not run this again if called by a GLib.timeout_add
378
# Do not run this again if called by a gobject.timeout_add
1029
379
return False
1030
380
1031
381
def __del__(self):
382
self.disable_hook = None
1032
383
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):
384
385
def checker_callback(self, pid, condition, command):
1052
386
"""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
if self.checker is not None:
1057
self.checker.join()
1058
387
self.checker_callback_tag = None
1059
388
self.checker = None
1060
1061
if returncode >= 0:
1062
self.last_checker_status = returncode
1063
self.last_checker_signal = None
1064
if self.last_checker_status == 0:
1065
logger.info("Checker for %(name)s succeeded",
389
if os.WIFEXITED(condition):
390
exitstatus = os.WEXITSTATUS(condition)
391
if exitstatus == 0:
392
logger.info(u"Checker for %(name)s succeeded",
1066
393
vars(self))
1067
394
self.checked_ok()
1068
395
else:
1069
logger.info("Checker for %(name)s failed", vars(self))
396
logger.info(u"Checker for %(name)s failed",
397
vars(self))
1070
398
else:
1071
self.last_checker_status = -1
1072
self.last_checker_signal = -returncode
1073
logger.warning("Checker for %(name)s crashed?",
399
logger.warning(u"Checker for %(name)s crashed?",
1074
400
vars(self))
1075
return False
1076
401
1077
402
def checked_ok(self):
1078
"""Assert that the client has been seen, alive and well."""
403
"""Bump up the timeout for this client.
404
405
This should only be called when the client has been seen,
406
alive and well.
407
"""
1079
408
self.last_checked_ok = datetime.datetime.utcnow()
1080
self.last_checker_status = 0
1081
self.last_checker_signal = None
1082
self.bump_timeout()
1083
1084
def bump_timeout(self, timeout=None):
1085
"""Bump up the timeout for this client."""
1086
if timeout is None:
1087
timeout = self.timeout
1088
if self.disable_initiator_tag is not None:
1089
GLib.source_remove(self.disable_initiator_tag)
1090
self.disable_initiator_tag = None
1091
if getattr(self, "enabled", False):
1092
self.disable_initiator_tag = GLib.timeout_add(
1093
int(timeout.total_seconds() * 1000), self.disable)
1094
self.expires = datetime.datetime.utcnow() + timeout
1095
1096
def need_approval(self):
1097
self.last_approval_request = datetime.datetime.utcnow()
1098
409
gobject.source_remove(self.disable_initiator_tag)
410
self.disable_initiator_tag = (gobject.timeout_add
411
(self.timeout_milliseconds(),
412
self.disable))
413
1099
414
def start_checker(self):
1100
415
"""Start a new checker subprocess if one is not running.
1101
416
1102
417
If a checker already exists, leave it running and do
1103
418
nothing."""
1104
419
# The reason for not killing a running checker is that if we
1105
# did that, and if a checker (for some reason) started running
1106
# slowly and taking more than 'interval' time, then the client
1107
# would inevitably timeout, since no checker would get a
1108
# chance to run to completion. If we instead leave running
420
# did that, then if a checker (for some reason) started
421
# running slowly and taking more than 'interval' time, the
422
# client would inevitably timeout, since no checker would get
423
# a chance to run to completion. If we instead leave running
1109
424
# checkers alone, the checker would have to take more time
1110
425
# than 'timeout' for the client to be disabled, which is as it
1111
426
# should be.
1112
1113
if self.checker is not None and not self.checker.is_alive():
1114
logger.warning("Checker was not alive; joining")
1115
self.checker.join()
1116
self.checker = None
427
428
# If a checker exists, make sure it is not a zombie
429
try:
430
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
431
except (AttributeError, OSError), error:
432
if (isinstance(error, OSError)
433
and error.errno != errno.ECHILD):
434
raise error
435
else:
436
if pid:
437
logger.warning(u"Checker was a zombie")
438
gobject.source_remove(self.checker_callback_tag)
439
self.checker_callback(pid, status,
440
self.current_checker_command)
1117
441
# Start a new checker if needed
1118
442
if self.checker is None:
1119
# Escape attributes for the shell
1120
escaped_attrs = {
1121
attr: re.escape(str(getattr(self, attr)))
1122
for attr in self.runtime_expansions}
1123
443
try:
1124
command = self.checker_command % escaped_attrs
1125
except TypeError as error:
1126
logger.error('Could not format string "%s"',
1127
self.checker_command,
1128
exc_info=error)
1129
return True # Try again later
444
# In case checker_command has exactly one % operator
445
command = self.checker_command % self.host
446
except TypeError:
447
# Escape attributes for the shell
448
escaped_attrs = dict((key,
449
re.escape(unicode(str(val),
450
errors=
451
u'replace')))
452
for key, val in
453
vars(self).iteritems())
454
try:
455
command = self.checker_command % escaped_attrs
456
except TypeError, error:
457
logger.error(u'Could not format string "%s":'
458
u' %s', self.checker_command, error)
459
return True # Try again later
1130
460
self.current_checker_command = command
1131
logger.info("Starting checker %r for %s", command,
1132
self.name)
1133
# We don't need to redirect stdout and stderr, since
1134
# in normal mode, that is already done by daemon(),
1135
# and in debug mode we don't want to. (Stdin is
1136
# always replaced by /dev/null.)
1137
# The exception is when not debugging but nevertheless
1138
# running in the foreground; use the previously
1139
# created wnull.
1140
popen_args = {"close_fds": True,
1141
"shell": True,
1142
"cwd": "/"}
1143
if (not self.server_settings["debug"]
1144
and self.server_settings["foreground"]):
1145
popen_args.update({"stdout": wnull,
1146
"stderr": wnull})
1147
pipe = multiprocessing.Pipe(duplex=False)
1148
self.checker = multiprocessing.Process(
1149
target=call_pipe,
1150
args=(pipe[1], subprocess.call, command),
1151
kwargs=popen_args)
1152
self.checker.start()
1153
self.checker_callback_tag = GLib.io_add_watch(
1154
GLib.IOChannel.unix_new(pipe[0].fileno()),
1155
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
1156
self.checker_callback, pipe[0], command)
1157
# Re-run this periodically if run by GLib.timeout_add
461
try:
462
logger.info(u"Starting checker %r for %s",
463
command, self.name)
464
# We don't need to redirect stdout and stderr, since
465
# in normal mode, that is already done by daemon(),
466
# and in debug mode we don't want to. (Stdin is
467
# always replaced by /dev/null.)
468
self.checker = subprocess.Popen(command,
469
close_fds=True,
470
shell=True, cwd=u"/")
471
self.checker_callback_tag = (gobject.child_watch_add
472
(self.checker.pid,
473
self.checker_callback,
474
data=command))
475
# The checker may have completed before the gobject
476
# watch was added. Check for this.
477
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
478
if pid:
479
gobject.source_remove(self.checker_callback_tag)
480
self.checker_callback(pid, status, command)
481
except OSError, error:
482
logger.error(u"Failed to start subprocess: %s",
483
error)
484
# Re-run this periodically if run by gobject.timeout_add
1158
485
return True
1159
486
1160
487
def stop_checker(self):
1161
488
"""Force the checker process, if any, to stop."""
1162
489
if self.checker_callback_tag:
1163
GLib.source_remove(self.checker_callback_tag)
490
gobject.source_remove(self.checker_callback_tag)
1164
491
self.checker_callback_tag = None
1165
if getattr(self, "checker", None) is None:
492
if getattr(self, u"checker", None) is None:
1166
493
return
1167
logger.debug("Stopping checker for %(name)s", vars(self))
1168
self.checker.terminate()
494
logger.debug(u"Stopping checker for %(name)s", vars(self))
495
try:
496
os.kill(self.checker.pid, signal.SIGTERM)
497
#time.sleep(0.5)
498
#if self.checker.poll() is None:
499
# os.kill(self.checker.pid, signal.SIGKILL)
500
except OSError, error:
501
if error.errno != errno.ESRCH: # No such process
502
raise
1169
503
self.checker = None
1170
504
1171
1172
def dbus_service_property(dbus_interface,
1173
signature="v",
1174
access="readwrite",
1175
byte_arrays=False):
505
def dbus_service_property(dbus_interface, signature=u"v",
506
access=u"readwrite", byte_arrays=False):
1176
507
"""Decorators for marking methods of a DBusObjectWithProperties to
1177
508
become properties on the D-Bus.
1178
509
1179
510
The decorated method will be called with no arguments by "Get"
1180
511
and with one argument by "Set".
1181
512
1182
513
The parameters, where they are supported, are the same as
1183
514
dbus.service.method, except there is only "signature", since the
1184
515
type from Get() and the type sent to Set() is the same.
1185
516
"""
1186
517
# Encoding deeply encoded byte arrays is not supported yet by the
1187
518
# "Set" method, so we fail early here:
1188
if byte_arrays and signature != "ay":
1189
raise ValueError("Byte arrays not supported for non-'ay'"
1190
" signature {!r}".format(signature))
1191
519
if byte_arrays and signature != u"ay":
520
raise ValueError(u"Byte arrays not supported for non-'ay'"
521
u" signature %r" % signature)
1192
522
def decorator(func):
1193
523
func._dbus_is_property = True
1194
524
func._dbus_interface = dbus_interface
1195
525
func._dbus_signature = signature
1196
526
func._dbus_access = access
1197
527
func._dbus_name = func.__name__
1198
if func._dbus_name.endswith("_dbus_property"):
528
if func._dbus_name.endswith(u"_dbus_property"):
1199
529
func._dbus_name = func._dbus_name[:-14]
1200
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
1201
return func
1202
1203
return decorator
1204
1205
1206
def dbus_interface_annotations(dbus_interface):
1207
"""Decorator for marking functions returning interface annotations
1208
1209
Usage:
1210
1211
@dbus_interface_annotations("org.example.Interface")
1212
def _foo(self): # Function name does not matter
1213
return {"org.freedesktop.DBus.Deprecated": "true",
1214
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1215
"false"}
1216
"""
1217
1218
def decorator(func):
1219
func._dbus_is_interface = True
1220
func._dbus_interface = dbus_interface
1221
func._dbus_name = dbus_interface
1222
return func
1223
1224
return decorator
1225
1226
1227
def dbus_annotations(annotations):
1228
"""Decorator to annotate D-Bus methods, signals or properties
1229
Usage:
1230
1231
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1232
"org.freedesktop.DBus.Property."
1233
"EmitsChangedSignal": "false"})
1234
@dbus_service_property("org.example.Interface", signature="b",
1235
access="r")
1236
def Property_dbus_property(self):
1237
return dbus.Boolean(False)
1238
1239
See also the DBusObjectWithAnnotations class.
1240
"""
1241
1242
def decorator(func):
1243
func._dbus_annotations = annotations
1244
return func
1245
530
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
531
return func
1246
532
return decorator
1247
533
1248
534
1249
535
class DBusPropertyException(dbus.exceptions.DBusException):
1250
536
"""A base class for D-Bus property-related exceptions
1251
537
"""
1252
pass
538
def __unicode__(self):
539
return unicode(str(self))
1253
540
1254
541
1255
542
class DBusPropertyAccessException(DBusPropertyException):
1264
551
pass
1265
552
1266
553
1267
class DBusObjectWithAnnotations(dbus.service.Object):
1268
"""A D-Bus object with annotations.
1269
1270
Classes inheriting from this can use the dbus_annotations
1271
decorator to add annotations to methods or signals.
1272
"""
1273
1274
@staticmethod
1275
def _is_dbus_thing(thing):
1276
"""Returns a function testing if an attribute is a D-Bus thing
1277
1278
If called like _is_dbus_thing("method") it returns a function
1279
suitable for use as predicate to inspect.getmembers().
1280
"""
1281
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1282
False)
1283
1284
def _get_all_dbus_things(self, thing):
1285
"""Returns a generator of (name, attribute) pairs
1286
"""
1287
return ((getattr(athing.__get__(self), "_dbus_name", name),
1288
athing.__get__(self))
1289
for cls in self.__class__.__mro__
1290
for name, athing in
1291
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1292
1293
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1294
out_signature="s",
1295
path_keyword='object_path',
1296
connection_keyword='connection')
1297
def Introspect(self, object_path, connection):
1298
"""Overloading of standard D-Bus method.
1299
1300
Inserts annotation tags on methods and signals.
1301
"""
1302
xmlstring = dbus.service.Object.Introspect(self, object_path,
1303
connection)
1304
try:
1305
document = xml.dom.minidom.parseString(xmlstring)
1306
1307
for if_tag in document.getElementsByTagName("interface"):
1308
# Add annotation tags
1309
for typ in ("method", "signal"):
1310
for tag in if_tag.getElementsByTagName(typ):
1311
annots = dict()
1312
for name, prop in (self.
1313
_get_all_dbus_things(typ)):
1314
if (name == tag.getAttribute("name")
1315
and prop._dbus_interface
1316
== if_tag.getAttribute("name")):
1317
annots.update(getattr(
1318
prop, "_dbus_annotations", {}))
1319
for name, value in annots.items():
1320
ann_tag = document.createElement(
1321
"annotation")
1322
ann_tag.setAttribute("name", name)
1323
ann_tag.setAttribute("value", value)
1324
tag.appendChild(ann_tag)
1325
# Add interface annotation tags
1326
for annotation, value in dict(
1327
itertools.chain.from_iterable(
1328
annotations().items()
1329
for name, annotations
1330
in self._get_all_dbus_things("interface")
1331
if name == if_tag.getAttribute("name")
1332
)).items():
1333
ann_tag = document.createElement("annotation")
1334
ann_tag.setAttribute("name", annotation)
1335
ann_tag.setAttribute("value", value)
1336
if_tag.appendChild(ann_tag)
1337
# Fix argument name for the Introspect method itself
1338
if (if_tag.getAttribute("name")
1339
== dbus.INTROSPECTABLE_IFACE):
1340
for cn in if_tag.getElementsByTagName("method"):
1341
if cn.getAttribute("name") == "Introspect":
1342
for arg in cn.getElementsByTagName("arg"):
1343
if (arg.getAttribute("direction")
1344
== "out"):
1345
arg.setAttribute("name",
1346
"xml_data")
1347
xmlstring = document.toxml("utf-8")
1348
document.unlink()
1349
except (AttributeError, xml.dom.DOMException,
1350
xml.parsers.expat.ExpatError) as error:
1351
logger.error("Failed to override Introspection method",
1352
exc_info=error)
1353
return xmlstring
1354
1355
1356
class DBusObjectWithProperties(DBusObjectWithAnnotations):
554
class DBusObjectWithProperties(dbus.service.Object):
1357
555
"""A D-Bus object with properties.
1358
556
1359
557
Classes inheriting from this can use the dbus_service_property
1360
558
decorator to expose methods as D-Bus properties. It exposes the
1361
559
standard Get(), Set(), and GetAll() methods on the D-Bus.
1362
560
"""
1363
561
562
@staticmethod
563
def _is_dbus_property(obj):
564
return getattr(obj, u"_dbus_is_property", False)
565
566
def _get_all_dbus_properties(self):
567
"""Returns a generator of (name, attribute) pairs
568
"""
569
return ((prop._dbus_name, prop)
570
for name, prop in
571
inspect.getmembers(self, self._is_dbus_property))
572
1364
573
def _get_dbus_property(self, interface_name, property_name):
1365
574
"""Returns a bound method if one exists which is a D-Bus
1366
575
property with the specified name and interface.
1367
576
"""
1368
for cls in self.__class__.__mro__:
1369
for name, value in inspect.getmembers(
1370
cls, self._is_dbus_thing("property")):
1371
if (value._dbus_name == property_name
1372
and value._dbus_interface == interface_name):
1373
return value.__get__(self)
1374
577
for name in (property_name,
578
property_name + u"_dbus_property"):
579
prop = getattr(self, name, None)
580
if (prop is None
581
or not self._is_dbus_property(prop)
582
or prop._dbus_name != property_name
583
or (interface_name and prop._dbus_interface
584
and interface_name != prop._dbus_interface)):
585
continue
586
return prop
1375
587
# No such property
1376
raise DBusPropertyNotFound("{}:{}.{}".format(
1377
self.dbus_object_path, interface_name, property_name))
1378
1379
@classmethod
1380
def _get_all_interface_names(cls):
1381
"""Get a sequence of all interfaces supported by an object"""
1382
return (name for name in set(getattr(getattr(x, attr),
1383
"_dbus_interface", None)
1384
for x in (inspect.getmro(cls))
1385
for attr in dir(x))
1386
if name is not None)
1387
1388
@dbus.service.method(dbus.PROPERTIES_IFACE,
1389
in_signature="ss",
1390
out_signature="v")
588
raise DBusPropertyNotFound(self.dbus_object_path + u":"
589
+ interface_name + u"."
590
+ property_name)
591
592
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
593
out_signature=u"v")
1391
594
def Get(self, interface_name, property_name):
1392
595
"""Standard D-Bus property Get() method, see D-Bus standard.
1393
596
"""
1394
597
prop = self._get_dbus_property(interface_name, property_name)
1395
if prop._dbus_access == "write":
598
if prop._dbus_access == u"write":
1396
599
raise DBusPropertyAccessException(property_name)
1397
600
value = prop()
1398
if not hasattr(value, "variant_level"):
601
if not hasattr(value, u"variant_level"):
1399
602
return value
1400
603
return type(value)(value, variant_level=value.variant_level+1)
1401
1402
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
604
605
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
1403
606
def Set(self, interface_name, property_name, value):
1404
607
"""Standard D-Bus property Set() method, see D-Bus standard.
1405
608
"""
1406
609
prop = self._get_dbus_property(interface_name, property_name)
1407
if prop._dbus_access == "read":
610
if prop._dbus_access == u"read":
1408
611
raise DBusPropertyAccessException(property_name)
1409
if prop._dbus_get_args_options["byte_arrays"]:
612
if prop._dbus_get_args_options[u"byte_arrays"]:
1410
613
# The byte_arrays option is not supported yet on
1411
614
# signatures other than "ay".
1412
if prop._dbus_signature != "ay":
1413
raise ValueError("Byte arrays not supported for non-"
1414
"'ay' signature {!r}"
1415
.format(prop._dbus_signature))
1416
value = dbus.ByteArray(b''.join(chr(byte)
1417
for byte in value))
615
if prop._dbus_signature != u"ay":
616
raise ValueError
617
value = dbus.ByteArray(''.join(unichr(byte)
618
for byte in value))
1418
619
prop(value)
1419
1420
@dbus.service.method(dbus.PROPERTIES_IFACE,
1421
in_signature="s",
1422
out_signature="a{sv}")
620
621
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
622
out_signature=u"a{sv}")
1423
623
def GetAll(self, interface_name):
1424
624
"""Standard D-Bus property GetAll() method, see D-Bus
1425
625
standard.
1426
626
1427
627
Note: Will not include properties with access="write".
1428
628
"""
1429
properties = {}
1430
for name, prop in self._get_all_dbus_things("property"):
629
all = {}
630
for name, prop in self._get_all_dbus_properties():
1431
631
if (interface_name
1432
632
and interface_name != prop._dbus_interface):
1433
633
# Interface non-empty but did not match
1434
634
continue
1435
635
# Ignore write-only properties
1436
if prop._dbus_access == "write":
636
if prop._dbus_access == u"write":
1437
637
continue
1438
638
value = prop()
1439
if not hasattr(value, "variant_level"):
1440
properties[name] = value
639
if not hasattr(value, u"variant_level"):
640
all[name] = value
1441
641
continue
1442
properties[name] = type(value)(
1443
value, variant_level=value.variant_level + 1)
1444
return dbus.Dictionary(properties, signature="sv")
1445
1446
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1447
def PropertiesChanged(self, interface_name, changed_properties,
1448
invalidated_properties):
1449
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1450
standard.
1451
"""
1452
pass
1453
642
all[name] = type(value)(value, variant_level=
643
value.variant_level+1)
644
return dbus.Dictionary(all, signature=u"sv")
645
1454
646
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1455
out_signature="s",
647
out_signature=u"s",
1456
648
path_keyword='object_path',
1457
649
connection_keyword='connection')
1458
650
def Introspect(self, object_path, connection):
1459
"""Overloading of standard D-Bus method.
1460
1461
Inserts property tags and interface annotation tags.
651
"""Standard D-Bus method, overloaded to insert property tags.
1462
652
"""
1463
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1464
object_path,
1465
connection)
653
xmlstring = dbus.service.Object.Introspect(self, object_path,
654
connection)
1466
655
try:
1467
656
document = xml.dom.minidom.parseString(xmlstring)
1468
1469
657
def make_tag(document, name, prop):
1470
e = document.createElement("property")
1471
e.setAttribute("name", name)
1472
e.setAttribute("type", prop._dbus_signature)
1473
e.setAttribute("access", prop._dbus_access)
658
e = document.createElement(u"property")
659
e.setAttribute(u"name", name)
660
e.setAttribute(u"type", prop._dbus_signature)
661
e.setAttribute(u"access", prop._dbus_access)
1474
662
return e
1475
1476
for if_tag in document.getElementsByTagName("interface"):
1477
# Add property tags
663
for if_tag in document.getElementsByTagName(u"interface"):
1478
664
for tag in (make_tag(document, name, prop)
1479
665
for name, prop
1480
in self._get_all_dbus_things("property")
666
in self._get_all_dbus_properties()
1481
667
if prop._dbus_interface
1482
== if_tag.getAttribute("name")):
668
== if_tag.getAttribute(u"name")):
1483
669
if_tag.appendChild(tag)
1484
# Add annotation tags for properties
1485
for tag in if_tag.getElementsByTagName("property"):
1486
annots = dict()
1487
for name, prop in self._get_all_dbus_things(
1488
"property"):
1489
if (name == tag.getAttribute("name")
1490
and prop._dbus_interface
1491
== if_tag.getAttribute("name")):
1492
annots.update(getattr(
1493
prop, "_dbus_annotations", {}))
1494
for name, value in annots.items():
1495
ann_tag = document.createElement(
1496
"annotation")
1497
ann_tag.setAttribute("name", name)
1498
ann_tag.setAttribute("value", value)
1499
tag.appendChild(ann_tag)
1500
670
# Add the names to the return values for the
1501
671
# "org.freedesktop.DBus.Properties" methods
1502
if (if_tag.getAttribute("name")
1503
== "org.freedesktop.DBus.Properties"):
1504
for cn in if_tag.getElementsByTagName("method"):
1505
if cn.getAttribute("name") == "Get":
1506
for arg in cn.getElementsByTagName("arg"):
1507
if (arg.getAttribute("direction")
1508
== "out"):
1509
arg.setAttribute("name", "value")
1510
elif cn.getAttribute("name") == "GetAll":
1511
for arg in cn.getElementsByTagName("arg"):
1512
if (arg.getAttribute("direction")
1513
== "out"):
1514
arg.setAttribute("name", "props")
1515
xmlstring = document.toxml("utf-8")
1516
document.unlink()
1517
except (AttributeError, xml.dom.DOMException,
1518
xml.parsers.expat.ExpatError) as error:
1519
logger.error("Failed to override Introspection method",
1520
exc_info=error)
1521
return xmlstring
1522
1523
1524
try:
1525
dbus.OBJECT_MANAGER_IFACE
1526
except AttributeError:
1527
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1528
1529
1530
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1531
"""A D-Bus object with an ObjectManager.
1532
1533
Classes inheriting from this exposes the standard
1534
GetManagedObjects call and the InterfacesAdded and
1535
InterfacesRemoved signals on the standard
1536
"org.freedesktop.DBus.ObjectManager" interface.
1537
1538
Note: No signals are sent automatically; they must be sent
1539
manually.
1540
"""
1541
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1542
out_signature="a{oa{sa{sv}}}")
1543
def GetManagedObjects(self):
1544
"""This function must be overridden"""
1545
raise NotImplementedError()
1546
1547
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1548
signature="oa{sa{sv}}")
1549
def InterfacesAdded(self, object_path, interfaces_and_properties):
1550
pass
1551
1552
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1553
def InterfacesRemoved(self, object_path, interfaces):
1554
pass
1555
1556
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1557
out_signature="s",
1558
path_keyword='object_path',
1559
connection_keyword='connection')
1560
def Introspect(self, object_path, connection):
1561
"""Overloading of standard D-Bus method.
1562
1563
Override return argument name of GetManagedObjects to be
1564
"objpath_interfaces_and_properties"
1565
"""
1566
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1567
object_path,
1568
connection)
1569
try:
1570
document = xml.dom.minidom.parseString(xmlstring)
1571
1572
for if_tag in document.getElementsByTagName("interface"):
1573
# Fix argument name for the GetManagedObjects method
1574
if (if_tag.getAttribute("name")
1575
== dbus.OBJECT_MANAGER_IFACE):
1576
for cn in if_tag.getElementsByTagName("method"):
1577
if (cn.getAttribute("name")
1578
== "GetManagedObjects"):
1579
for arg in cn.getElementsByTagName("arg"):
1580
if (arg.getAttribute("direction")
1581
== "out"):
1582
arg.setAttribute(
1583
"name",
1584
"objpath_interfaces"
1585
"_and_properties")
1586
xmlstring = document.toxml("utf-8")
1587
document.unlink()
1588
except (AttributeError, xml.dom.DOMException,
1589
xml.parsers.expat.ExpatError) as error:
1590
logger.error("Failed to override Introspection method",
1591
exc_info=error)
1592
return xmlstring
1593
1594
1595
def datetime_to_dbus(dt, variant_level=0):
1596
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1597
if dt is None:
1598
return dbus.String("", variant_level=variant_level)
1599
return dbus.String(dt.isoformat(), variant_level=variant_level)
1600
1601
1602
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1603
"""A class decorator; applied to a subclass of
1604
dbus.service.Object, it will add alternate D-Bus attributes with
1605
interface names according to the "alt_interface_names" mapping.
1606
Usage:
1607
1608
@alternate_dbus_interfaces({"org.example.Interface":
1609
"net.example.AlternateInterface"})
1610
class SampleDBusObject(dbus.service.Object):
1611
@dbus.service.method("org.example.Interface")
1612
def SampleDBusMethod():
1613
pass
1614
1615
The above "SampleDBusMethod" on "SampleDBusObject" will be
1616
reachable via two interfaces: "org.example.Interface" and
1617
"net.example.AlternateInterface", the latter of which will have
1618
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1619
"true", unless "deprecate" is passed with a False value.
1620
1621
This works for methods and signals, and also for D-Bus properties
1622
(from DBusObjectWithProperties) and interfaces (from the
1623
dbus_interface_annotations decorator).
1624
"""
1625
1626
def wrapper(cls):
1627
for orig_interface_name, alt_interface_name in (
1628
alt_interface_names.items()):
1629
attr = {}
1630
interface_names = set()
1631
# Go though all attributes of the class
1632
for attrname, attribute in inspect.getmembers(cls):
1633
# Ignore non-D-Bus attributes, and D-Bus attributes
1634
# with the wrong interface name
1635
if (not hasattr(attribute, "_dbus_interface")
1636
or not attribute._dbus_interface.startswith(
1637
orig_interface_name)):
1638
continue
1639
# Create an alternate D-Bus interface name based on
1640
# the current name
1641
alt_interface = attribute._dbus_interface.replace(
1642
orig_interface_name, alt_interface_name)
1643
interface_names.add(alt_interface)
1644
# Is this a D-Bus signal?
1645
if getattr(attribute, "_dbus_is_signal", False):
1646
# Extract the original non-method undecorated
1647
# function by black magic
1648
if sys.version_info.major == 2:
1649
nonmethod_func = (dict(
1650
zip(attribute.func_code.co_freevars,
1651
attribute.__closure__))
1652
["func"].cell_contents)
1653
else:
1654
nonmethod_func = (dict(
1655
zip(attribute.__code__.co_freevars,
1656
attribute.__closure__))
1657
["func"].cell_contents)
1658
# Create a new, but exactly alike, function
1659
# object, and decorate it to be a new D-Bus signal
1660
# with the alternate D-Bus interface name
1661
new_function = copy_function(nonmethod_func)
1662
new_function = (dbus.service.signal(
1663
alt_interface,
1664
attribute._dbus_signature)(new_function))
1665
# Copy annotations, if any
1666
try:
1667
new_function._dbus_annotations = dict(
1668
attribute._dbus_annotations)
1669
except AttributeError:
1670
pass
1671
1672
# Define a creator of a function to call both the
1673
# original and alternate functions, so both the
1674
# original and alternate signals gets sent when
1675
# the function is called
1676
def fixscope(func1, func2):
1677
"""This function is a scope container to pass
1678
func1 and func2 to the "call_both" function
1679
outside of its arguments"""
1680
1681
@functools.wraps(func2)
1682
def call_both(*args, **kwargs):
1683
"""This function will emit two D-Bus
1684
signals by calling func1 and func2"""
1685
func1(*args, **kwargs)
1686
func2(*args, **kwargs)
1687
# Make wrapper function look like a D-Bus
1688
# signal
1689
for name, attr in inspect.getmembers(func2):
1690
if name.startswith("_dbus_"):
1691
setattr(call_both, name, attr)
1692
1693
return call_both
1694
# Create the "call_both" function and add it to
1695
# the class
1696
attr[attrname] = fixscope(attribute, new_function)
1697
# Is this a D-Bus method?
1698
elif getattr(attribute, "_dbus_is_method", False):
1699
# Create a new, but exactly alike, function
1700
# object. Decorate it to be a new D-Bus method
1701
# with the alternate D-Bus interface name. Add it
1702
# to the class.
1703
attr[attrname] = (
1704
dbus.service.method(
1705
alt_interface,
1706
attribute._dbus_in_signature,
1707
attribute._dbus_out_signature)
1708
(copy_function(attribute)))
1709
# Copy annotations, if any
1710
try:
1711
attr[attrname]._dbus_annotations = dict(
1712
attribute._dbus_annotations)
1713
except AttributeError:
1714
pass
1715
# Is this a D-Bus property?
1716
elif getattr(attribute, "_dbus_is_property", False):
1717
# Create a new, but exactly alike, function
1718
# object, and decorate it to be a new D-Bus
1719
# property with the alternate D-Bus interface
1720
# name. Add it to the class.
1721
attr[attrname] = (dbus_service_property(
1722
alt_interface, attribute._dbus_signature,
1723
attribute._dbus_access,
1724
attribute._dbus_get_args_options
1725
["byte_arrays"])
1726
(copy_function(attribute)))
1727
# Copy annotations, if any
1728
try:
1729
attr[attrname]._dbus_annotations = dict(
1730
attribute._dbus_annotations)
1731
except AttributeError:
1732
pass
1733
# Is this a D-Bus interface?
1734
elif getattr(attribute, "_dbus_is_interface", False):
1735
# Create a new, but exactly alike, function
1736
# object. Decorate it to be a new D-Bus interface
1737
# with the alternate D-Bus interface name. Add it
1738
# to the class.
1739
attr[attrname] = (
1740
dbus_interface_annotations(alt_interface)
1741
(copy_function(attribute)))
1742
if deprecate:
1743
# Deprecate all alternate interfaces
1744
iname = "_AlternateDBusNames_interface_annotation{}"
1745
for interface_name in interface_names:
1746
1747
@dbus_interface_annotations(interface_name)
1748
def func(self):
1749
return {"org.freedesktop.DBus.Deprecated":
1750
"true"}
1751
# Find an unused name
1752
for aname in (iname.format(i)
1753
for i in itertools.count()):
1754
if aname not in attr:
1755
attr[aname] = func
1756
break
1757
if interface_names:
1758
# Replace the class with a new subclass of it with
1759
# methods, signals, etc. as created above.
1760
if sys.version_info.major == 2:
1761
cls = type(b"{}Alternate".format(cls.__name__),
1762
(cls, ), attr)
1763
else:
1764
cls = type("{}Alternate".format(cls.__name__),
1765
(cls, ), attr)
1766
return cls
1767
1768
return wrapper
1769
1770
1771
@alternate_dbus_interfaces({"se.recompile.Mandos":
1772
"se.bsnet.fukt.Mandos"})
672
if (if_tag.getAttribute(u"name")
673
== u"org.freedesktop.DBus.Properties"):
674
for cn in if_tag.getElementsByTagName(u"method"):
675
if cn.getAttribute(u"name") == u"Get":
676
for arg in cn.getElementsByTagName(u"arg"):
677
if (arg.getAttribute(u"direction")
678
== u"out"):
679
arg.setAttribute(u"name", u"value")
680
elif cn.getAttribute(u"name") == u"GetAll":
681
for arg in cn.getElementsByTagName(u"arg"):
682
if (arg.getAttribute(u"direction")
683
== u"out"):
684
arg.setAttribute(u"name", u"props")
685
xmlstring = document.toxml(u"utf-8")
686
document.unlink()
687
except (AttributeError, xml.dom.DOMException,
688
xml.parsers.expat.ExpatError), error:
689
logger.error(u"Failed to override Introspection method",
690
error)
691
return xmlstring
692
693
1773
694
class ClientDBus(Client, DBusObjectWithProperties):
1774
695
"""A Client class using D-Bus
1775
696
1776
697
Attributes:
1777
698
dbus_object_path: dbus.ObjectPath
1778
699
bus: dbus.SystemBus()
1779
700
"""
1780
1781
runtime_expansions = (Client.runtime_expansions
1782
+ ("dbus_object_path", ))
1783
1784
_interface = "se.recompile.Mandos.Client"
1785
1786
701
# dbus.service.Object doesn't use super(), so we can't either.
1787
1788
def __init__(self, bus=None, *args, **kwargs):
702
703
def __init__(self, bus = None, *args, **kwargs):
704
self._approvals_pending = 0
1789
705
self.bus = bus
1790
706
Client.__init__(self, *args, **kwargs)
1791
707
# Only now, when this client is initialized, can it show up on
1792
708
# the D-Bus
1793
client_object_name = str(self.name).translate(
1794
{ord("."): ord("_"),
1795
ord("-"): ord("_")})
1796
self.dbus_object_path = dbus.ObjectPath(
1797
"/clients/" + client_object_name)
709
self.dbus_object_path = (dbus.ObjectPath
710
(u"/clients/"
711
+ self.name.replace(u".", u"_")))
1798
712
DBusObjectWithProperties.__init__(self, self.bus,
1799
713
self.dbus_object_path)
1800
714
1801
def notifychangeproperty(transform_func, dbus_name,
1802
type_func=lambda x: x,
1803
variant_level=1,
1804
invalidate_only=False,
1805
_interface=_interface):
1806
""" Modify a variable so that it's a property which announces
1807
its changes to DBus.
1808
1809
transform_fun: Function that takes a value and a variant_level
1810
and transforms it to a D-Bus type.
1811
dbus_name: D-Bus name of the variable
1812
type_func: Function that transform the value before sending it
1813
to the D-Bus. Default: no transform
1814
variant_level: D-Bus variant level. Default: 1
1815
"""
1816
attrname = "_{}".format(dbus_name)
1817
1818
def setter(self, value):
1819
if hasattr(self, "dbus_object_path"):
1820
if (not hasattr(self, attrname) or
1821
type_func(getattr(self, attrname, None))
1822
!= type_func(value)):
1823
if invalidate_only:
1824
self.PropertiesChanged(
1825
_interface, dbus.Dictionary(),
1826
dbus.Array((dbus_name, )))
1827
else:
1828
dbus_value = transform_func(
1829
type_func(value),
1830
variant_level=variant_level)
1831
self.PropertyChanged(dbus.String(dbus_name),
1832
dbus_value)
1833
self.PropertiesChanged(
1834
_interface,
1835
dbus.Dictionary({dbus.String(dbus_name):
1836
dbus_value}),
1837
dbus.Array())
1838
setattr(self, attrname, value)
1839
1840
return property(lambda self: getattr(self, attrname), setter)
1841
1842
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1843
approvals_pending = notifychangeproperty(dbus.Boolean,
1844
"ApprovalPending",
1845
type_func=bool)
1846
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1847
last_enabled = notifychangeproperty(datetime_to_dbus,
1848
"LastEnabled")
1849
checker = notifychangeproperty(
1850
dbus.Boolean, "CheckerRunning",
1851
type_func=lambda checker: checker is not None)
1852
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1853
"LastCheckedOK")
1854
last_checker_status = notifychangeproperty(dbus.Int16,
1855
"LastCheckerStatus")
1856
last_approval_request = notifychangeproperty(
1857
datetime_to_dbus, "LastApprovalRequest")
1858
approved_by_default = notifychangeproperty(dbus.Boolean,
1859
"ApprovedByDefault")
1860
approval_delay = notifychangeproperty(
1861
dbus.UInt64, "ApprovalDelay",
1862
type_func=lambda td: td.total_seconds() * 1000)
1863
approval_duration = notifychangeproperty(
1864
dbus.UInt64, "ApprovalDuration",
1865
type_func=lambda td: td.total_seconds() * 1000)
1866
host = notifychangeproperty(dbus.String, "Host")
1867
timeout = notifychangeproperty(
1868
dbus.UInt64, "Timeout",
1869
type_func=lambda td: td.total_seconds() * 1000)
1870
extended_timeout = notifychangeproperty(
1871
dbus.UInt64, "ExtendedTimeout",
1872
type_func=lambda td: td.total_seconds() * 1000)
1873
interval = notifychangeproperty(
1874
dbus.UInt64, "Interval",
1875
type_func=lambda td: td.total_seconds() * 1000)
1876
checker_command = notifychangeproperty(dbus.String, "Checker")
1877
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1878
invalidate_only=True)
1879
1880
del notifychangeproperty
1881
715
def _get_approvals_pending(self):
716
return self._approvals_pending
717
def _set_approvals_pending(self, value):
718
old_value = self._approvals_pending
719
self._approvals_pending = value
720
bval = bool(value)
721
if (hasattr(self, "dbus_object_path")
722
and bval is not bool(old_value)):
723
dbus_bool = dbus.Boolean(bval, variant_level=1)
724
self.PropertyChanged(dbus.String(u"approved_pending"),
725
dbus_bool)
726
727
approvals_pending = property(_get_approvals_pending,
728
_set_approvals_pending)
729
del _get_approvals_pending, _set_approvals_pending
730
731
@staticmethod
732
def _datetime_to_dbus(dt, variant_level=0):
733
"""Convert a UTC datetime.datetime() to a D-Bus type."""
734
return dbus.String(dt.isoformat(),
735
variant_level=variant_level)
736
737
def enable(self):
738
oldstate = getattr(self, u"enabled", False)
739
r = Client.enable(self)
740
if oldstate != self.enabled:
741
# Emit D-Bus signals
742
self.PropertyChanged(dbus.String(u"enabled"),
743
dbus.Boolean(True, variant_level=1))
744
self.PropertyChanged(
745
dbus.String(u"last_enabled"),
746
self._datetime_to_dbus(self.last_enabled,
747
variant_level=1))
748
return r
749
750
def disable(self, quiet = False):
751
oldstate = getattr(self, u"enabled", False)
752
r = Client.disable(self, quiet=quiet)
753
if not quiet and oldstate != self.enabled:
754
# Emit D-Bus signal
755
self.PropertyChanged(dbus.String(u"enabled"),
756
dbus.Boolean(False, variant_level=1))
757
return r
758
1882
759
def __del__(self, *args, **kwargs):
1883
760
try:
1884
761
self.remove_from_connection()
1885
762
except LookupError:
1886
763
pass
1887
if hasattr(DBusObjectWithProperties, "__del__"):
764
if hasattr(DBusObjectWithProperties, u"__del__"):
1888
765
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1889
766
Client.__del__(self, *args, **kwargs)
1890
1891
def checker_callback(self, source, condition,
1892
connection, command, *args, **kwargs):
1893
ret = Client.checker_callback(self, source, condition,
1894
connection, command, *args,
1895
**kwargs)
1896
exitstatus = self.last_checker_status
1897
if exitstatus >= 0:
767
768
def checker_callback(self, pid, condition, command,
769
*args, **kwargs):
770
self.checker_callback_tag = None
771
self.checker = None
772
# Emit D-Bus signal
773
self.PropertyChanged(dbus.String(u"checker_running"),
774
dbus.Boolean(False, variant_level=1))
775
if os.WIFEXITED(condition):
776
exitstatus = os.WEXITSTATUS(condition)
1898
777
# Emit D-Bus signal
1899
778
self.CheckerCompleted(dbus.Int16(exitstatus),
1900
# This is specific to GNU libC
1901
dbus.Int64(exitstatus << 8),
779
dbus.Int64(condition),
1902
780
dbus.String(command))
1903
781
else:
1904
782
# Emit D-Bus signal
1905
783
self.CheckerCompleted(dbus.Int16(-1),
1906
dbus.Int64(
1907
# This is specific to GNU libC
1908
(exitstatus << 8)
1909
| self.last_checker_signal),
784
dbus.Int64(condition),
1910
785
dbus.String(command))
1911
return ret
1912
786
787
return Client.checker_callback(self, pid, condition, command,
788
*args, **kwargs)
789
790
def checked_ok(self, *args, **kwargs):
791
r = Client.checked_ok(self, *args, **kwargs)
792
# Emit D-Bus signal
793
self.PropertyChanged(
794
dbus.String(u"last_checked_ok"),
795
(self._datetime_to_dbus(self.last_checked_ok,
796
variant_level=1)))
797
return r
798
1913
799
def start_checker(self, *args, **kwargs):
1914
old_checker_pid = getattr(self.checker, "pid", None)
800
old_checker = self.checker
801
if self.checker is not None:
802
old_checker_pid = self.checker.pid
803
else:
804
old_checker_pid = None
1915
805
r = Client.start_checker(self, *args, **kwargs)
1916
806
# Only if new checker process was started
1917
807
if (self.checker is not None
1918
808
and old_checker_pid != self.checker.pid):
1919
809
# Emit D-Bus signal
1920
810
self.CheckerStarted(self.current_checker_command)
811
self.PropertyChanged(
812
dbus.String(u"checker_running"),
813
dbus.Boolean(True, variant_level=1))
814
return r
815
816
def stop_checker(self, *args, **kwargs):
817
old_checker = getattr(self, u"checker", None)
818
r = Client.stop_checker(self, *args, **kwargs)
819
if (old_checker is not None
820
and getattr(self, u"checker", None) is None):
821
self.PropertyChanged(dbus.String(u"checker_running"),
822
dbus.Boolean(False, variant_level=1))
1921
823
return r
1922
824
1923
825
def _reset_approved(self):
1924
self.approved = None
826
self._approved = None
1925
827
return False
1926
828
1927
829
def approve(self, value=True):
1928
self.approved = value
1929
GLib.timeout_add(int(self.approval_duration.total_seconds()
1930
* 1000), self._reset_approved)
1931
830
self.send_changedstate()
1932
1933
# D-Bus methods, signals & properties
1934
1935
# Interfaces
1936
1937
# Signals
1938
831
self._approved = value
832
gobject.timeout_add(self._timedelta_to_milliseconds(self.approved_duration),
833
self._reset_approved)
834
835
836
## D-Bus methods, signals & properties
837
_interface = u"se.bsnet.fukt.Mandos.Client"
838
839
## Signals
840
1939
841
# CheckerCompleted - signal
1940
@dbus.service.signal(_interface, signature="nxs")
842
@dbus.service.signal(_interface, signature=u"nxs")
1941
843
def CheckerCompleted(self, exitcode, waitstatus, command):
1942
844
"D-Bus signal"
1943
845
pass
1944
846
1945
847
# CheckerStarted - signal
1946
@dbus.service.signal(_interface, signature="s")
848
@dbus.service.signal(_interface, signature=u"s")
1947
849
def CheckerStarted(self, command):
1948
850
"D-Bus signal"
1949
851
pass
1950
852
1951
853
# PropertyChanged - signal
1952
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1953
@dbus.service.signal(_interface, signature="sv")
854
@dbus.service.signal(_interface, signature=u"sv")
1954
855
def PropertyChanged(self, property, value):
1955
856
"D-Bus signal"
1956
857
pass
1957
858
1958
859
# GotSecret - signal
1959
860
@dbus.service.signal(_interface)
1960
861
def GotSecret(self):
1963
864
server to mandos-client
1964
865
"""
1965
866
pass
1966
867
1967
868
# Rejected - signal
1968
@dbus.service.signal(_interface, signature="s")
869
@dbus.service.signal(_interface, signature=u"s")
1969
870
def Rejected(self, reason):
1970
871
"D-Bus signal"
1971
872
pass
1972
873
1973
874
# NeedApproval - signal
1974
@dbus.service.signal(_interface, signature="tb")
875
@dbus.service.signal(_interface, signature=u"db")
1975
876
def NeedApproval(self, timeout, default):
1976
877
"D-Bus signal"
1977
return self.need_approval()
1978
1979
# Methods
878
pass
879
880
## Methods
1980
881
1981
882
# Approve - method
1982
@dbus.service.method(_interface, in_signature="b")
883
@dbus.service.method(_interface, in_signature=u"b")
1983
884
def Approve(self, value):
1984
885
self.approve(value)
1985
886
1986
887
# CheckedOK - method
1987
888
@dbus.service.method(_interface)
1988
889
def CheckedOK(self):
1989
self.checked_ok()
1990
890
return self.checked_ok()
891
1991
892
# Enable - method
1992
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1993
893
@dbus.service.method(_interface)
1994
894
def Enable(self):
1995
895
"D-Bus method"
1996
896
self.enable()
1997
897
1998
898
# StartChecker - method
1999
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2000
899
@dbus.service.method(_interface)
2001
900
def StartChecker(self):
2002
901
"D-Bus method"
2003
902
self.start_checker()
2004
903
2005
904
# Disable - method
2006
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2007
905
@dbus.service.method(_interface)
2008
906
def Disable(self):
2009
907
"D-Bus method"
2010
908
self.disable()
2011
909
2012
910
# StopChecker - method
2013
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2014
911
@dbus.service.method(_interface)
2015
912
def StopChecker(self):
2016
913
self.stop_checker()
2017
2018
# Properties
2019
2020
# ApprovalPending - property
2021
@dbus_service_property(_interface, signature="b", access="read")
2022
def ApprovalPending_dbus_property(self):
914
915
## Properties
916
917
# approved_pending - property
918
@dbus_service_property(_interface, signature=u"b", access=u"read")
919
def approved_pending_dbus_property(self):
2023
920
return dbus.Boolean(bool(self.approvals_pending))
2024
2025
# ApprovedByDefault - property
2026
@dbus_service_property(_interface,
2027
signature="b",
2028
access="readwrite")
2029
def ApprovedByDefault_dbus_property(self, value=None):
2030
if value is None: # get
2031
return dbus.Boolean(self.approved_by_default)
2032
self.approved_by_default = bool(value)
2033
2034
# ApprovalDelay - property
2035
@dbus_service_property(_interface,
2036
signature="t",
2037
access="readwrite")
2038
def ApprovalDelay_dbus_property(self, value=None):
2039
if value is None: # get
2040
return dbus.UInt64(self.approval_delay.total_seconds()
2041
* 1000)
2042
self.approval_delay = datetime.timedelta(0, 0, 0, value)
2043
2044
# ApprovalDuration - property
2045
@dbus_service_property(_interface,
2046
signature="t",
2047
access="readwrite")
2048
def ApprovalDuration_dbus_property(self, value=None):
2049
if value is None: # get
2050
return dbus.UInt64(self.approval_duration.total_seconds()
2051
* 1000)
2052
self.approval_duration = datetime.timedelta(0, 0, 0, value)
2053
2054
# Name - property
2055
@dbus_annotations(
2056
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2057
@dbus_service_property(_interface, signature="s", access="read")
2058
def Name_dbus_property(self):
921
922
# approved_by_default - property
923
@dbus_service_property(_interface, signature=u"b",
924
access=u"readwrite")
925
def approved_by_default_dbus_property(self):
926
return dbus.Boolean(self.approved_by_default)
927
928
# approved_delay - property
929
@dbus_service_property(_interface, signature=u"t",
930
access=u"readwrite")
931
def approved_delay_dbus_property(self):
932
return dbus.UInt64(self.approved_delay_milliseconds())
933
934
# approved_duration - property
935
@dbus_service_property(_interface, signature=u"t",
936
access=u"readwrite")
937
def approved_duration_dbus_property(self):
938
return dbus.UInt64(self._timedelta_to_milliseconds(
939
self.approved_duration))
940
941
# name - property
942
@dbus_service_property(_interface, signature=u"s", access=u"read")
943
def name_dbus_property(self):
2059
944
return dbus.String(self.name)
2060
2061
# KeyID - property
2062
@dbus_annotations(
2063
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2064
@dbus_service_property(_interface, signature="s", access="read")
2065
def KeyID_dbus_property(self):
2066
return dbus.String(self.key_id)
2067
2068
# Fingerprint - property
2069
@dbus_annotations(
2070
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2071
@dbus_service_property(_interface, signature="s", access="read")
2072
def Fingerprint_dbus_property(self):
945
946
# fingerprint - property
947
@dbus_service_property(_interface, signature=u"s", access=u"read")
948
def fingerprint_dbus_property(self):
2073
949
return dbus.String(self.fingerprint)
2074
2075
# Host - property
2076
@dbus_service_property(_interface,
2077
signature="s",
2078
access="readwrite")
2079
def Host_dbus_property(self, value=None):
950
951
# host - property
952
@dbus_service_property(_interface, signature=u"s",
953
access=u"readwrite")
954
def host_dbus_property(self, value=None):
2080
955
if value is None: # get
2081
956
return dbus.String(self.host)
2082
self.host = str(value)
2083
2084
# Created - property
2085
@dbus_annotations(
2086
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2087
@dbus_service_property(_interface, signature="s", access="read")
2088
def Created_dbus_property(self):
2089
return datetime_to_dbus(self.created)
2090
2091
# LastEnabled - property
2092
@dbus_service_property(_interface, signature="s", access="read")
2093
def LastEnabled_dbus_property(self):
2094
return datetime_to_dbus(self.last_enabled)
2095
2096
# Enabled - property
2097
@dbus_service_property(_interface,
2098
signature="b",
2099
access="readwrite")
2100
def Enabled_dbus_property(self, value=None):
957
self.host = value
958
# Emit D-Bus signal
959
self.PropertyChanged(dbus.String(u"host"),
960
dbus.String(value, variant_level=1))
961
962
# created - property
963
@dbus_service_property(_interface, signature=u"s", access=u"read")
964
def created_dbus_property(self):
965
return dbus.String(self._datetime_to_dbus(self.created))
966
967
# last_enabled - property
968
@dbus_service_property(_interface, signature=u"s", access=u"read")
969
def last_enabled_dbus_property(self):
970
if self.last_enabled is None:
971
return dbus.String(u"")
972
return dbus.String(self._datetime_to_dbus(self.last_enabled))
973
974
# enabled - property
975
@dbus_service_property(_interface, signature=u"b",
976
access=u"readwrite")
977
def enabled_dbus_property(self, value=None):
2101
978
if value is None: # get
2102
979
return dbus.Boolean(self.enabled)
2103
980
if value:
2104
981
self.enable()
2105
982
else:
2106
983
self.disable()
2107
2108
# LastCheckedOK - property
2109
@dbus_service_property(_interface,
2110
signature="s",
2111
access="readwrite")
2112
def LastCheckedOK_dbus_property(self, value=None):
984
985
# last_checked_ok - property
986
@dbus_service_property(_interface, signature=u"s",
987
access=u"readwrite")
988
def last_checked_ok_dbus_property(self, value=None):
2113
989
if value is not None:
2114
990
self.checked_ok()
2115
991
return
2116
return datetime_to_dbus(self.last_checked_ok)
2117
2118
# LastCheckerStatus - property
2119
@dbus_service_property(_interface, signature="n", access="read")
2120
def LastCheckerStatus_dbus_property(self):
2121
return dbus.Int16(self.last_checker_status)
2122
2123
# Expires - property
2124
@dbus_service_property(_interface, signature="s", access="read")
2125
def Expires_dbus_property(self):
2126
return datetime_to_dbus(self.expires)
2127
2128
# LastApprovalRequest - property
2129
@dbus_service_property(_interface, signature="s", access="read")
2130
def LastApprovalRequest_dbus_property(self):
2131
return datetime_to_dbus(self.last_approval_request)
2132
2133
# Timeout - property
2134
@dbus_service_property(_interface,
2135
signature="t",
2136
access="readwrite")
2137
def Timeout_dbus_property(self, value=None):
992
if self.last_checked_ok is None:
993
return dbus.String(u"")
994
return dbus.String(self._datetime_to_dbus(self
995
.last_checked_ok))
996
997
# timeout - property
998
@dbus_service_property(_interface, signature=u"t",
999
access=u"readwrite")
1000
def timeout_dbus_property(self, value=None):
2138
1001
if value is None: # get
2139
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2140
old_timeout = self.timeout
1002
return dbus.UInt64(self.timeout_milliseconds())
2141
1003
self.timeout = datetime.timedelta(0, 0, 0, value)
2142
# Reschedule disabling
2143
if self.enabled:
2144
now = datetime.datetime.utcnow()
2145
self.expires += self.timeout - old_timeout
2146
if self.expires <= now:
2147
# The timeout has passed
2148
self.disable()
2149
else:
2150
if (getattr(self, "disable_initiator_tag", None)
2151
is None):
2152
return
2153
GLib.source_remove(self.disable_initiator_tag)
2154
self.disable_initiator_tag = GLib.timeout_add(
2155
int((self.expires - now).total_seconds() * 1000),
2156
self.disable)
2157
2158
# ExtendedTimeout - property
2159
@dbus_service_property(_interface,
2160
signature="t",
2161
access="readwrite")
2162
def ExtendedTimeout_dbus_property(self, value=None):
2163
if value is None: # get
2164
return dbus.UInt64(self.extended_timeout.total_seconds()
2165
* 1000)
2166
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2167
2168
# Interval - property
2169
@dbus_service_property(_interface,
2170
signature="t",
2171
access="readwrite")
2172
def Interval_dbus_property(self, value=None):
2173
if value is None: # get
2174
return dbus.UInt64(self.interval.total_seconds() * 1000)
1004
# Emit D-Bus signal
1005
self.PropertyChanged(dbus.String(u"timeout"),
1006
dbus.UInt64(value, variant_level=1))
1007
if getattr(self, u"disable_initiator_tag", None) is None:
1008
return
1009
# Reschedule timeout
1010
gobject.source_remove(self.disable_initiator_tag)
1011
self.disable_initiator_tag = None
1012
time_to_die = (self.
1013
_timedelta_to_milliseconds((self
1014
.last_checked_ok
1015
+ self.timeout)
1016
- datetime.datetime
1017
.utcnow()))
1018
if time_to_die <= 0:
1019
# The timeout has passed
1020
self.disable()
1021
else:
1022
self.disable_initiator_tag = (gobject.timeout_add
1023
(time_to_die, self.disable))
1024
1025
# interval - property
1026
@dbus_service_property(_interface, signature=u"t",
1027
access=u"readwrite")
1028
def interval_dbus_property(self, value=None):
1029
if value is None: # get
1030
return dbus.UInt64(self.interval_milliseconds())
2175
1031
self.interval = datetime.timedelta(0, 0, 0, value)
2176
if getattr(self, "checker_initiator_tag", None) is None:
1032
# Emit D-Bus signal
1033
self.PropertyChanged(dbus.String(u"interval"),
1034
dbus.UInt64(value, variant_level=1))
1035
if getattr(self, u"checker_initiator_tag", None) is None:
2177
1036
return
2178
if self.enabled:
2179
# Reschedule checker run
2180
GLib.source_remove(self.checker_initiator_tag)
2181
self.checker_initiator_tag = GLib.timeout_add(
2182
value, self.start_checker)
2183
self.start_checker() # Start one now, too
1037
# Reschedule checker run
1038
gobject.source_remove(self.checker_initiator_tag)
1039
self.checker_initiator_tag = (gobject.timeout_add
1040
(value, self.start_checker))
1041
self.start_checker() # Start one now, too
2184
1042
2185
# Checker - property
2186
@dbus_service_property(_interface,
2187
signature="s",
2188
access="readwrite")
2189
def Checker_dbus_property(self, value=None):
1043
# checker - property
1044
@dbus_service_property(_interface, signature=u"s",
1045
access=u"readwrite")
1046
def checker_dbus_property(self, value=None):
2190
1047
if value is None: # get
2191
1048
return dbus.String(self.checker_command)
2192
self.checker_command = str(value)
2193
2194
# CheckerRunning - property
2195
@dbus_service_property(_interface,
2196
signature="b",
2197
access="readwrite")
2198
def CheckerRunning_dbus_property(self, value=None):
1049
self.checker_command = value
1050
# Emit D-Bus signal
1051
self.PropertyChanged(dbus.String(u"checker"),
1052
dbus.String(self.checker_command,
1053
variant_level=1))
1054
1055
# checker_running - property
1056
@dbus_service_property(_interface, signature=u"b",
1057
access=u"readwrite")
1058
def checker_running_dbus_property(self, value=None):
2199
1059
if value is None: # get
2200
1060
return dbus.Boolean(self.checker is not None)
2201
1061
if value:
2202
1062
self.start_checker()
2203
1063
else:
2204
1064
self.stop_checker()
2205
2206
# ObjectPath - property
2207
@dbus_annotations(
2208
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2209
"org.freedesktop.DBus.Deprecated": "true"})
2210
@dbus_service_property(_interface, signature="o", access="read")
2211
def ObjectPath_dbus_property(self):
2212
return self.dbus_object_path # is already a dbus.ObjectPath
2213
2214
# Secret = property
2215
@dbus_annotations(
2216
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2217
"invalidates"})
2218
@dbus_service_property(_interface,
2219
signature="ay",
2220
access="write",
2221
byte_arrays=True)
2222
def Secret_dbus_property(self, value):
2223
self.secret = bytes(value)
2224
1065
1066
# object_path - property
1067
@dbus_service_property(_interface, signature=u"o", access=u"read")
1068
def object_path_dbus_property(self):
1069
return self.dbus_object_path # is already a dbus.ObjectPath
1070
1071
# secret = property
1072
@dbus_service_property(_interface, signature=u"ay",
1073
access=u"write", byte_arrays=True)
1074
def secret_dbus_property(self, value):
1075
self.secret = str(value)
1076
2225
1077
del _interface
2226
1078
2227
1079
2228
class ProxyClient:
2229
def __init__(self, child_pipe, key_id, fpr, address):
1080
class ProxyClient(object):
1081
def __init__(self, child_pipe, fpr, address):
2230
1082
self._pipe = child_pipe
2231
self._pipe.send(('init', key_id, fpr, address))
1083
self._pipe.send(('init', fpr, address))
2232
1084
if not self._pipe.recv():
2233
raise KeyError(key_id or fpr)
1085
raise KeyError()
2234
1086
2235
1087
def __getattribute__(self, name):
2236
if name == '_pipe':
1088
if(name == '_pipe'):
2237
1089
return super(ProxyClient, self).__getattribute__(name)
2238
1090
self._pipe.send(('getattr', name))
2239
1091
data = self._pipe.recv()
2240
1092
if data[0] == 'data':
2241
1093
return data[1]
2242
1094
if data[0] == 'function':
2243
2244
1095
def func(*args, **kwargs):
2245
1096
self._pipe.send(('funcall', name, args, kwargs))
2246
1097
return self._pipe.recv()[1]
2247
2248
1098
return func
2249
1099
2250
1100
def __setattr__(self, name, value):
2251
if name == '_pipe':
1101
if(name == '_pipe'):
2252
1102
return super(ProxyClient, self).__setattr__(name, value)
2253
1103
self._pipe.send(('setattr', name, value))
2254
1104
2255
1105
2256
1106
class ClientHandler(socketserver.BaseRequestHandler, object):
2257
1107
"""A class to handle client connections.
2258
1108
2259
1109
Instantiated once for each connection to handle it.
2260
1110
Note: This will run in its own forked process."""
2261
1111
2262
1112
def handle(self):
2263
1113
with contextlib.closing(self.server.child_pipe) as child_pipe:
2264
logger.info("TCP connection from: %s",
2265
str(self.client_address))
2266
logger.debug("Pipe FD: %d",
1114
logger.info(u"TCP connection from: %s",
1115
unicode(self.client_address))
1116
logger.debug(u"Pipe FD: %d",
2267
1117
self.server.child_pipe.fileno())
2268
1118
2269
session = gnutls.ClientSession(self.request)
2270
2271
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2272
# "+AES-256-CBC", "+SHA1",
2273
# "+COMP-NULL", "+CTYPE-OPENPGP",
2274
# "+DHE-DSS"))
1119
session = (gnutls.connection
1120
.ClientSession(self.request,
1121
gnutls.connection
1122
.X509Credentials()))
1123
1124
# Note: gnutls.connection.X509Credentials is really a
1125
# generic GnuTLS certificate credentials object so long as
1126
# no X.509 keys are added to it. Therefore, we can use it
1127
# here despite using OpenPGP certificates.
1128
1129
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1130
# u"+AES-256-CBC", u"+SHA1",
1131
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1132
# u"+DHE-DSS"))
2275
1133
# Use a fallback default, since this MUST be set.
2276
1134
priority = self.server.gnutls_priority
2277
1135
if priority is None:
2278
priority = "NORMAL"
2279
gnutls.priority_set_direct(session._c_object,
2280
priority.encode("utf-8"),
2281
None)
1136
priority = u"NORMAL"
1137
(gnutls.library.functions
1138
.gnutls_priority_set_direct(session._c_object,
1139
priority, None))
2282
1140
2283
1141
# Start communication using the Mandos protocol
2284
1142
# Get protocol number
2285
1143
line = self.request.makefile().readline()
2286
logger.debug("Protocol version: %r", line)
1144
logger.debug(u"Protocol version: %r", line)
2287
1145
try:
2288
1146
if int(line.strip().split()[0]) > 1:
2289
raise RuntimeError(line)
2290
except (ValueError, IndexError, RuntimeError) as error:
2291
logger.error("Unknown protocol version: %s", error)
1147
raise RuntimeError
1148
except (ValueError, IndexError, RuntimeError), error:
1149
logger.error(u"Unknown protocol version: %s", error)
2292
1150
return
2293
1151
2294
1152
# Start GnuTLS connection
2295
1153
try:
2296
1154
session.handshake()
2297
except gnutls.Error as error:
2298
logger.warning("Handshake failed: %s", error)
1155
except gnutls.errors.GNUTLSError, error:
1156
logger.warning(u"Handshake failed: %s", error)
2299
1157
# Do not run session.bye() here: the session is not
2300
1158
# established. Just abandon the request.
2301
1159
return
2302
logger.debug("Handshake succeeded")
1160
logger.debug(u"Handshake succeeded")
2303
1161
2304
1162
approval_required = False
2305
1163
try:
2306
if gnutls.has_rawpk:
2307
fpr = b""
2308
try:
2309
key_id = self.key_id(
2310
self.peer_certificate(session))
2311
except (TypeError, gnutls.Error) as error:
2312
logger.warning("Bad certificate: %s", error)
2313
return
2314
logger.debug("Key ID: %s", key_id)
2315
2316
else:
2317
key_id = b""
2318
try:
2319
fpr = self.fingerprint(
2320
self.peer_certificate(session))
2321
except (TypeError, gnutls.Error) as error:
2322
logger.warning("Bad certificate: %s", error)
2323
return
2324
logger.debug("Fingerprint: %s", fpr)
2325
2326
try:
2327
client = ProxyClient(child_pipe, key_id, fpr,
1164
try:
1165
fpr = self.fingerprint(self.peer_certificate
1166
(session))
1167
except (TypeError, gnutls.errors.GNUTLSError), error:
1168
logger.warning(u"Bad certificate: %s", error)
1169
return
1170
logger.debug(u"Fingerprint: %s", fpr)
1171
1172
try:
1173
client = ProxyClient(child_pipe, fpr,
2328
1174
self.client_address)
2329
1175
except KeyError:
2330
1176
return
2331
2332
if client.approval_delay:
2333
delay = client.approval_delay
1177
1178
if client.approved_delay:
1179
delay = client.approved_delay
2334
1180
client.approvals_pending += 1
2335
1181
approval_required = True
2336
1182
2337
1183
while True:
2338
1184
if not client.enabled:
2339
logger.info("Client %s is disabled",
2340
client.name)
1185
logger.warning(u"Client %s is disabled",
1186
client.name)
2341
1187
if self.server.use_dbus:
2342
1188
# Emit D-Bus signal
2343
client.Rejected("Disabled")
1189
client.Rejected("Disabled")
2344
1190
return
2345
2346
if client.approved or not client.approval_delay:
2347
# We are approved or approval is disabled
1191
1192
if client._approved or not client.approved_delay:
1193
#We are approved or approval is disabled
2348
1194
break
2349
elif client.approved is None:
2350
logger.info("Client %s needs approval",
1195
elif client._approved is None:
1196
logger.info(u"Client %s need approval",
2351
1197
client.name)
2352
1198
if self.server.use_dbus:
2353
1199
# Emit D-Bus signal
2354
1200
client.NeedApproval(
2355
client.approval_delay.total_seconds()
2356
* 1000, client.approved_by_default)
1201
client.approved_delay_milliseconds(),
1202
client.approved_by_default)
2357
1203
else:
2358
logger.warning("Client %s was not approved",
1204
logger.warning(u"Client %s was not approved",
2359
1205
client.name)
2360
1206
if self.server.use_dbus:
2361
1207
# Emit D-Bus signal
2362
client.Rejected("Denied")
1208
client.Rejected("Disapproved")
2363
1209
return
2364
2365
# wait until timeout or approved
1210
1211
#wait until timeout or approved
1212
#x = float(client._timedelta_to_milliseconds(delay))
2366
1213
time = datetime.datetime.now()
2367
1214
client.changedstate.acquire()
2368
client.changedstate.wait(delay.total_seconds())
1215
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
2369
1216
client.changedstate.release()
2370
1217
time2 = datetime.datetime.now()
2371
1218
if (time2 - time) >= delay:
2375
1222
client.name)
2376
1223
if self.server.use_dbus:
2377
1224
# Emit D-Bus signal
2378
client.Rejected("Approval timed out")
1225
client.Rejected("Time out")
2379
1226
return
2380
1227
else:
2381
1228
break
2382
1229
else:
2383
1230
delay -= time2 - time
2384
2385
try:
2386
session.send(client.secret)
2387
except gnutls.Error as error:
2388
logger.warning("gnutls send failed",
2389
exc_info=error)
2390
return
2391
2392
logger.info("Sending secret to %s", client.name)
2393
# bump the timeout using extended_timeout
2394
client.bump_timeout(client.extended_timeout)
1231
1232
sent_size = 0
1233
while sent_size < len(client.secret):
1234
try:
1235
sent = session.send(client.secret[sent_size:])
1236
except (gnutls.errors.GNUTLSError), error:
1237
logger.warning("gnutls send failed")
1238
return
1239
logger.debug(u"Sent: %d, remaining: %d",
1240
sent, len(client.secret)
1241
- (sent_size + sent))
1242
sent_size += sent
1243
1244
logger.info(u"Sending secret to %s", client.name)
1245
# bump the timeout as if seen
1246
client.checked_ok()
2395
1247
if self.server.use_dbus:
2396
1248
# Emit D-Bus signal
2397
1249
client.GotSecret()
2398
1250
2399
1251
finally:
2400
1252
if approval_required:
2401
1253
client.approvals_pending -= 1
2402
1254
try:
2403
1255
session.bye()
2404
except gnutls.Error as error:
2405
logger.warning("GnuTLS bye failed",
2406
exc_info=error)
2407
1256
except (gnutls.errors.GNUTLSError), error:
1257
logger.warning("gnutls bye failed")
1258
2408
1259
@staticmethod
2409
1260
def peer_certificate(session):
2410
"Return the peer's certificate as a bytestring"
2411
try:
2412
cert_type = gnutls.certificate_type_get2(session._c_object,
2413
gnutls.CTYPE_PEERS)
2414
except AttributeError:
2415
cert_type = gnutls.certificate_type_get(session._c_object)
2416
if gnutls.has_rawpk:
2417
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2418
else:
2419
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2420
# If not a valid certificate type...
2421
if cert_type not in valid_cert_types:
2422
logger.info("Cert type %r not in %r", cert_type,
2423
valid_cert_types)
2424
# ...return invalid data
2425
return b""
1261
"Return the peer's OpenPGP certificate as a bytestring"
1262
# If not an OpenPGP certificate...
1263
if (gnutls.library.functions
1264
.gnutls_certificate_type_get(session._c_object)
1265
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1266
# ...do the normal thing
1267
return session.peer_certificate
2426
1268
list_size = ctypes.c_uint(1)
2427
cert_list = (gnutls.certificate_get_peers
1269
cert_list = (gnutls.library.functions
1270
.gnutls_certificate_get_peers
2428
1271
(session._c_object, ctypes.byref(list_size)))
2429
1272
if not bool(cert_list) and list_size.value != 0:
2430
raise gnutls.Error("error getting peer certificate")
1273
raise gnutls.errors.GNUTLSError(u"error getting peer"
1274
u" certificate")
2431
1275
if list_size.value == 0:
2432
1276
return None
2433
1277
cert = cert_list[0]
2434
1278
return ctypes.string_at(cert.data, cert.size)
2435
2436
@staticmethod
2437
def key_id(certificate):
2438
"Convert a certificate bytestring to a hexdigit key ID"
2439
# New GnuTLS "datum" with the public key
2440
datum = gnutls.datum_t(
2441
ctypes.cast(ctypes.c_char_p(certificate),
2442
ctypes.POINTER(ctypes.c_ubyte)),
2443
ctypes.c_uint(len(certificate)))
2444
# XXX all these need to be created in the gnutls "module"
2445
# New empty GnuTLS certificate
2446
pubkey = gnutls.pubkey_t()
2447
gnutls.pubkey_init(ctypes.byref(pubkey))
2448
# Import the raw public key into the certificate
2449
gnutls.pubkey_import(pubkey,
2450
ctypes.byref(datum),
2451
gnutls.X509_FMT_DER)
2452
# New buffer for the key ID
2453
buf = ctypes.create_string_buffer(32)
2454
buf_len = ctypes.c_size_t(len(buf))
2455
# Get the key ID from the raw public key into the buffer
2456
gnutls.pubkey_get_key_id(pubkey,
2457
gnutls.KEYID_USE_SHA256,
2458
ctypes.cast(ctypes.byref(buf),
2459
ctypes.POINTER(ctypes.c_ubyte)),
2460
ctypes.byref(buf_len))
2461
# Deinit the certificate
2462
gnutls.pubkey_deinit(pubkey)
2463
2464
# Convert the buffer to a Python bytestring
2465
key_id = ctypes.string_at(buf, buf_len.value)
2466
# Convert the bytestring to hexadecimal notation
2467
hex_key_id = binascii.hexlify(key_id).upper()
2468
return hex_key_id
2469
1279
2470
1280
@staticmethod
2471
1281
def fingerprint(openpgp):
2472
1282
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2473
1283
# New GnuTLS "datum" with the OpenPGP public key
2474
datum = gnutls.datum_t(
2475
ctypes.cast(ctypes.c_char_p(openpgp),
2476
ctypes.POINTER(ctypes.c_ubyte)),
2477
ctypes.c_uint(len(openpgp)))
1284
datum = (gnutls.library.types
1285
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1286
ctypes.POINTER
1287
(ctypes.c_ubyte)),
1288
ctypes.c_uint(len(openpgp))))
2478
1289
# New empty GnuTLS certificate
2479
crt = gnutls.openpgp_crt_t()
2480
gnutls.openpgp_crt_init(ctypes.byref(crt))
1290
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1291
(gnutls.library.functions
1292
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2481
1293
# Import the OpenPGP public key into the certificate
2482
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2483
gnutls.OPENPGP_FMT_RAW)
1294
(gnutls.library.functions
1295
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1296
gnutls.library.constants
1297
.GNUTLS_OPENPGP_FMT_RAW))
2484
1298
# Verify the self signature in the key
2485
1299
crtverify = ctypes.c_uint()
2486
gnutls.openpgp_crt_verify_self(crt, 0,
2487
ctypes.byref(crtverify))
1300
(gnutls.library.functions
1301
.gnutls_openpgp_crt_verify_self(crt, 0,
1302
ctypes.byref(crtverify)))
2488
1303
if crtverify.value != 0:
2489
gnutls.openpgp_crt_deinit(crt)
2490
raise gnutls.CertificateSecurityError(code
2491
=crtverify.value)
1304
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1305
raise (gnutls.errors.CertificateSecurityError
1306
(u"Verify failed"))
2492
1307
# New buffer for the fingerprint
2493
1308
buf = ctypes.create_string_buffer(20)
2494
1309
buf_len = ctypes.c_size_t()
2495
1310
# Get the fingerprint from the certificate into the buffer
2496
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2497
ctypes.byref(buf_len))
1311
(gnutls.library.functions
1312
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1313
ctypes.byref(buf_len)))
2498
1314
# Deinit the certificate
2499
gnutls.openpgp_crt_deinit(crt)
1315
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2500
1316
# Convert the buffer to a Python bytestring
2501
1317
fpr = ctypes.string_at(buf, buf_len.value)
2502
1318
# Convert the bytestring to hexadecimal notation
2503
hex_fpr = binascii.hexlify(fpr).upper()
1319
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
2504
1320
return hex_fpr
2505
1321
2506
1322
2507
class MultiprocessingMixIn:
1323
class MultiprocessingMixIn(object):
2508
1324
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2509
2510
1325
def sub_process_main(self, request, address):
2511
1326
try:
2512
1327
self.finish_request(request, address)
2513
except Exception:
1328
except:
2514
1329
self.handle_error(request, address)
2515
1330
self.close_request(request)
2516
1331
2517
1332
def process_request(self, request, address):
2518
1333
"""Start a new process to process the request."""
2519
proc = multiprocessing.Process(target=self.sub_process_main,
2520
args=(request, address))
2521
proc.start()
2522
return proc
2523
2524
2525
class MultiprocessingMixInWithPipe(MultiprocessingMixIn):
1334
multiprocessing.Process(target = self.sub_process_main,
1335
args = (request, address)).start()
1336
1337
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2526
1338
""" adds a pipe to the MixIn """
2527
2528
1339
def process_request(self, request, client_address):
2529
1340
"""Overrides and wraps the original process_request().
2530
1341
2531
1342
This function creates a new pipe in self.pipe
2532
1343
"""
2533
1344
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2534
1345
2535
proc = MultiprocessingMixIn.process_request(self, request,
2536
client_address)
1346
super(MultiprocessingMixInWithPipe,
1347
self).process_request(request, client_address)
2537
1348
self.child_pipe.close()
2538
self.add_pipe(parent_pipe, proc)
1349
self.add_pipe(parent_pipe)
2539
1350
2540
def add_pipe(self, parent_pipe, proc):
1351
def add_pipe(self, parent_pipe):
2541
1352
"""Dummy function; override as necessary"""
2542
raise NotImplementedError()
2543
1353
pass
2544
1354
2545
1355
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2546
socketserver.TCPServer):
1356
socketserver.TCPServer, object):
2547
1357
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
2548
1358
2549
1359
Attributes:
2550
1360
enabled: Boolean; whether this server is activated yet
2551
1361
interface: None or a network interface name (string)
2552
1362
use_ipv6: Boolean; to use IPv6 or not
2553
1363
"""
2554
2555
1364
def __init__(self, server_address, RequestHandlerClass,
2556
interface=None,
2557
use_ipv6=True,
2558
socketfd=None):
2559
"""If socketfd is set, use that file descriptor instead of
2560
creating a new one with socket.socket().
2561
"""
1365
interface=None, use_ipv6=True):
2562
1366
self.interface = interface
2563
1367
if use_ipv6:
2564
1368
self.address_family = socket.AF_INET6
2565
if socketfd is not None:
2566
# Save the file descriptor
2567
self.socketfd = socketfd
2568
# Save the original socket.socket() function
2569
self.socket_socket = socket.socket
2570
2571
# To implement --socket, we monkey patch socket.socket.
2572
#
2573
# (When socketserver.TCPServer is a new-style class, we
2574
# could make self.socket into a property instead of monkey
2575
# patching socket.socket.)
2576
#
2577
# Create a one-time-only replacement for socket.socket()
2578
@functools.wraps(socket.socket)
2579
def socket_wrapper(*args, **kwargs):
2580
# Restore original function so subsequent calls are
2581
# not affected.
2582
socket.socket = self.socket_socket
2583
del self.socket_socket
2584
# This time only, return a new socket object from the
2585
# saved file descriptor.
2586
return socket.fromfd(self.socketfd, *args, **kwargs)
2587
# Replace socket.socket() function with wrapper
2588
socket.socket = socket_wrapper
2589
# The socketserver.TCPServer.__init__ will call
2590
# socket.socket(), which might be our replacement,
2591
# socket_wrapper(), if socketfd was set.
2592
1369
socketserver.TCPServer.__init__(self, server_address,
2593
1370
RequestHandlerClass)
2594
2595
1371
def server_bind(self):
2596
1372
"""This overrides the normal server_bind() function
2597
1373
to bind to an interface if one was specified, and also NOT to
2598
1374
bind to an address or port if they were not specified."""
2599
global SO_BINDTODEVICE
2600
1375
if self.interface is not None:
2601
1376
if SO_BINDTODEVICE is None:
2602
# Fall back to a hard-coded value which seems to be
2603
# common enough.
2604
logger.warning("SO_BINDTODEVICE not found, trying 25")
2605
SO_BINDTODEVICE = 25
2606
try:
2607
self.socket.setsockopt(
2608
socket.SOL_SOCKET, SO_BINDTODEVICE,
2609
(self.interface + "\0").encode("utf-8"))
2610
except socket.error as error:
2611
if error.errno == errno.EPERM:
2612
logger.error("No permission to bind to"
2613
" interface %s", self.interface)
2614
elif error.errno == errno.ENOPROTOOPT:
2615
logger.error("SO_BINDTODEVICE not available;"
2616
" cannot bind to interface %s",
2617
self.interface)
2618
elif error.errno == errno.ENODEV:
2619
logger.error("Interface %s does not exist,"
2620
" cannot bind", self.interface)
2621
else:
2622
raise
1377
logger.error(u"SO_BINDTODEVICE does not exist;"
1378
u" cannot bind to interface %s",
1379
self.interface)
1380
else:
1381
try:
1382
self.socket.setsockopt(socket.SOL_SOCKET,
1383
SO_BINDTODEVICE,
1384
str(self.interface
1385
+ u'\0'))
1386
except socket.error, error:
1387
if error[0] == errno.EPERM:
1388
logger.error(u"No permission to"
1389
u" bind to interface %s",
1390
self.interface)
1391
elif error[0] == errno.ENOPROTOOPT:
1392
logger.error(u"SO_BINDTODEVICE not available;"
1393
u" cannot bind to interface %s",
1394
self.interface)
1395
else:
1396
raise
2623
1397
# Only bind(2) the socket if we really need to.
2624
1398
if self.server_address[0] or self.server_address[1]:
2625
if self.server_address[1]:
2626
self.allow_reuse_address = True
2627
1399
if not self.server_address[0]:
2628
1400
if self.address_family == socket.AF_INET6:
2629
any_address = "::" # in6addr_any
1401
any_address = u"::" # in6addr_any
2630
1402
else:
2631
any_address = "0.0.0.0" # INADDR_ANY
1403
any_address = socket.INADDR_ANY
2632
1404
self.server_address = (any_address,
2633
1405
self.server_address[1])
2634
1406
elif not self.server_address[1]:
2635
self.server_address = (self.server_address[0], 0)
1407
self.server_address = (self.server_address[0],
1408
0)
2636
1409
# if self.interface:
2637
1410
# self.server_address = (self.server_address[0],
2638
1411
# 0, # port
2644
1417
2645
1418
class MandosServer(IPv6_TCPServer):
2646
1419
"""Mandos server.
2647
1420
2648
1421
Attributes:
2649
1422
clients: set of Client objects
2650
1423
gnutls_priority GnuTLS priority string
2651
1424
use_dbus: Boolean; to emit D-Bus signals or not
2652
2653
Assumes a GLib.MainLoop event loop.
1425
1426
Assumes a gobject.MainLoop event loop.
2654
1427
"""
2655
2656
1428
def __init__(self, server_address, RequestHandlerClass,
2657
interface=None,
2658
use_ipv6=True,
2659
clients=None,
2660
gnutls_priority=None,
2661
use_dbus=True,
2662
socketfd=None):
1429
interface=None, use_ipv6=True, clients=None,
1430
gnutls_priority=None, use_dbus=True):
2663
1431
self.enabled = False
2664
1432
self.clients = clients
2665
1433
if self.clients is None:
2666
self.clients = {}
1434
self.clients = set()
2667
1435
self.use_dbus = use_dbus
2668
1436
self.gnutls_priority = gnutls_priority
2669
1437
IPv6_TCPServer.__init__(self, server_address,
2670
1438
RequestHandlerClass,
2671
interface=interface,
2672
use_ipv6=use_ipv6,
2673
socketfd=socketfd)
2674
1439
interface = interface,
1440
use_ipv6 = use_ipv6)
2675
1441
def server_activate(self):
2676
1442
if self.enabled:
2677
1443
return socketserver.TCPServer.server_activate(self)
2678
2679
1444
def enable(self):
2680
1445
self.enabled = True
2681
2682
def add_pipe(self, parent_pipe, proc):
1446
def add_pipe(self, parent_pipe):
2683
1447
# Call "handle_ipc" for both data and EOF events
2684
GLib.io_add_watch(
2685
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2686
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2687
functools.partial(self.handle_ipc,
2688
parent_pipe=parent_pipe,
2689
proc=proc))
2690
2691
def handle_ipc(self, source, condition,
2692
parent_pipe=None,
2693
proc=None,
1448
gobject.io_add_watch(parent_pipe.fileno(),
1449
gobject.IO_IN | gobject.IO_HUP,
1450
functools.partial(self.handle_ipc,
1451
parent_pipe = parent_pipe))
1452
1453
def handle_ipc(self, source, condition, parent_pipe=None,
2694
1454
client_object=None):
2695
# error, or the other end of multiprocessing.Pipe has closed
2696
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2697
# Wait for other process to exit
2698
proc.join()
1455
condition_names = {
1456
gobject.IO_IN: u"IN", # There is data to read.
1457
gobject.IO_OUT: u"OUT", # Data can be written (without
1458
# blocking).
1459
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1460
gobject.IO_ERR: u"ERR", # Error condition.
1461
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1462
# broken, usually for pipes and
1463
# sockets).
1464
}
1465
conditions_string = ' | '.join(name
1466
for cond, name in
1467
condition_names.iteritems()
1468
if cond & condition)
1469
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1470
conditions_string)
1471
1472
# error or the other end of multiprocessing.Pipe has closed
1473
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2699
1474
return False
2700
1475
2701
1476
# Read a request from the child
2702
1477
request = parent_pipe.recv()
1478
logger.debug(u"IPC request: %s", repr(request))
2703
1479
command = request[0]
2704
1480
2705
1481
if command == 'init':
2706
key_id = request[1].decode("ascii")
2707
fpr = request[2].decode("ascii")
2708
address = request[3]
2709
2710
for c in self.clients.values():
2711
if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2712
continue
2713
if key_id and c.key_id == key_id:
2714
client = c
2715
break
2716
if fpr and c.fingerprint == fpr:
1482
fpr = request[1]
1483
address = request[2]
1484
1485
for c in self.clients:
1486
if c.fingerprint == fpr:
2717
1487
client = c
2718
1488
break
2719
1489
else:
2720
logger.info("Client not found for key ID: %s, address"
2721
": %s", key_id or fpr, address)
1490
logger.warning(u"Client not found for fingerprint: %s, ad"
1491
u"dress: %s", fpr, address)
2722
1492
if self.use_dbus:
2723
1493
# Emit D-Bus signal
2724
mandos_dbus_service.ClientNotFound(key_id or fpr,
2725
address[0])
1494
mandos_dbus_service.ClientNotFound(fpr, address)
2726
1495
parent_pipe.send(False)
2727
1496
return False
2728
2729
GLib.io_add_watch(
2730
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2731
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2732
functools.partial(self.handle_ipc,
2733
parent_pipe=parent_pipe,
2734
proc=proc,
2735
client_object=client))
1497
1498
gobject.io_add_watch(parent_pipe.fileno(),
1499
gobject.IO_IN | gobject.IO_HUP,
1500
functools.partial(self.handle_ipc,
1501
parent_pipe = parent_pipe,
1502
client_object = client))
2736
1503
parent_pipe.send(True)
2737
# remove the old hook in favor of the new above hook on
2738
# same fileno
1504
# remove the old hook in favor of the new above hook on same fileno
2739
1505
return False
2740
1506
if command == 'funcall':
2741
1507
funcname = request[1]
2742
1508
args = request[2]
2743
1509
kwargs = request[3]
2744
2745
parent_pipe.send(('data', getattr(client_object,
2746
funcname)(*args,
2747
**kwargs)))
1510
1511
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
2748
1512
2749
1513
if command == 'getattr':
2750
1514
attrname = request[1]
2751
if isinstance(client_object.__getattribute__(attrname),
2752
collections.Callable):
2753
parent_pipe.send(('function', ))
1515
if callable(client_object.__getattribute__(attrname)):
1516
parent_pipe.send(('function',))
2754
1517
else:
2755
parent_pipe.send((
2756
'data', client_object.__getattribute__(attrname)))
2757
1518
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
1519
2758
1520
if command == 'setattr':
2759
1521
attrname = request[1]
2760
1522
value = request[2]
2763
1525
return True
2764
1526
2765
1527
2766
def rfc3339_duration_to_delta(duration):
2767
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2768
2769
>>> rfc3339_duration_to_delta("P7D") == datetime.timedelta(7)
2770
True
2771
>>> rfc3339_duration_to_delta("PT60S") == datetime.timedelta(0, 60)
2772
True
2773
>>> rfc3339_duration_to_delta("PT60M") == datetime.timedelta(0, 3600)
2774
True
2775
>>> rfc3339_duration_to_delta("PT24H") == datetime.timedelta(1)
2776
True
2777
>>> rfc3339_duration_to_delta("P1W") == datetime.timedelta(7)
2778
True
2779
>>> rfc3339_duration_to_delta("PT5M30S") == datetime.timedelta(0, 330)
2780
True
2781
>>> rfc3339_duration_to_delta("P1DT3M20S") == datetime.timedelta(1, 200)
2782
True
2783
"""
2784
2785
# Parsing an RFC 3339 duration with regular expressions is not
2786
# possible - there would have to be multiple places for the same
2787
# values, like seconds. The current code, while more esoteric, is
2788
# cleaner without depending on a parsing library. If Python had a
2789
# built-in library for parsing we would use it, but we'd like to
2790
# avoid excessive use of external libraries.
2791
2792
# New type for defining tokens, syntax, and semantics all-in-one
2793
Token = collections.namedtuple("Token", (
2794
"regexp", # To match token; if "value" is not None, must have
2795
# a "group" containing digits
2796
"value", # datetime.timedelta or None
2797
"followers")) # Tokens valid after this token
2798
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2799
# the "duration" ABNF definition in RFC 3339, Appendix A.
2800
token_end = Token(re.compile(r"$"), None, frozenset())
2801
token_second = Token(re.compile(r"(\d+)S"),
2802
datetime.timedelta(seconds=1),
2803
frozenset((token_end, )))
2804
token_minute = Token(re.compile(r"(\d+)M"),
2805
datetime.timedelta(minutes=1),
2806
frozenset((token_second, token_end)))
2807
token_hour = Token(re.compile(r"(\d+)H"),
2808
datetime.timedelta(hours=1),
2809
frozenset((token_minute, token_end)))
2810
token_time = Token(re.compile(r"T"),
2811
None,
2812
frozenset((token_hour, token_minute,
2813
token_second)))
2814
token_day = Token(re.compile(r"(\d+)D"),
2815
datetime.timedelta(days=1),
2816
frozenset((token_time, token_end)))
2817
token_month = Token(re.compile(r"(\d+)M"),
2818
datetime.timedelta(weeks=4),
2819
frozenset((token_day, token_end)))
2820
token_year = Token(re.compile(r"(\d+)Y"),
2821
datetime.timedelta(weeks=52),
2822
frozenset((token_month, token_end)))
2823
token_week = Token(re.compile(r"(\d+)W"),
2824
datetime.timedelta(weeks=1),
2825
frozenset((token_end, )))
2826
token_duration = Token(re.compile(r"P"), None,
2827
frozenset((token_year, token_month,
2828
token_day, token_time,
2829
token_week)))
2830
# Define starting values:
2831
# Value so far
2832
value = datetime.timedelta()
2833
found_token = None
2834
# Following valid tokens
2835
followers = frozenset((token_duration, ))
2836
# String left to parse
2837
s = duration
2838
# Loop until end token is found
2839
while found_token is not token_end:
2840
# Search for any currently valid tokens
2841
for token in followers:
2842
match = token.regexp.match(s)
2843
if match is not None:
2844
# Token found
2845
if token.value is not None:
2846
# Value found, parse digits
2847
factor = int(match.group(1), 10)
2848
# Add to value so far
2849
value += factor * token.value
2850
# Strip token from string
2851
s = token.regexp.sub("", s, 1)
2852
# Go to found token
2853
found_token = token
2854
# Set valid next tokens
2855
followers = found_token.followers
2856
break
2857
else:
2858
# No currently valid tokens were found
2859
raise ValueError("Invalid RFC 3339 duration: {!r}"
2860
.format(duration))
2861
# End token found
2862
return value
2863
2864
2865
1528
def string_to_delta(interval):
2866
1529
"""Parse a string and return a datetime.timedelta
2867
2868
>>> string_to_delta('7d') == datetime.timedelta(7)
2869
True
2870
>>> string_to_delta('60s') == datetime.timedelta(0, 60)
2871
True
2872
>>> string_to_delta('60m') == datetime.timedelta(0, 3600)
2873
True
2874
>>> string_to_delta('24h') == datetime.timedelta(1)
2875
True
2876
>>> string_to_delta('1w') == datetime.timedelta(7)
2877
True
2878
>>> string_to_delta('5m 30s') == datetime.timedelta(0, 330)
2879
True
1530
1531
>>> string_to_delta(u'7d')
1532
datetime.timedelta(7)
1533
>>> string_to_delta(u'60s')
1534
datetime.timedelta(0, 60)
1535
>>> string_to_delta(u'60m')
1536
datetime.timedelta(0, 3600)
1537
>>> string_to_delta(u'24h')
1538
datetime.timedelta(1)
1539
>>> string_to_delta(u'1w')
1540
datetime.timedelta(7)
1541
>>> string_to_delta(u'5m 30s')
1542
datetime.timedelta(0, 330)
2880
1543
"""
2881
2882
try:
2883
return rfc3339_duration_to_delta(interval)
2884
except ValueError:
2885
pass
2886
2887
1544
timevalue = datetime.timedelta(0)
2888
1545
for s in interval.split():
2889
1546
try:
2890
suffix = s[-1]
1547
suffix = unicode(s[-1])
2891
1548
value = int(s[:-1])
2892
if suffix == "d":
1549
if suffix == u"d":
2893
1550
delta = datetime.timedelta(value)
2894
elif suffix == "s":
1551
elif suffix == u"s":
2895
1552
delta = datetime.timedelta(0, value)
2896
elif suffix == "m":
1553
elif suffix == u"m":
2897
1554
delta = datetime.timedelta(0, 0, 0, 0, value)
2898
elif suffix == "h":
1555
elif suffix == u"h":
2899
1556
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
2900
elif suffix == "w":
1557
elif suffix == u"w":
2901
1558
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2902
1559
else:
2903
raise ValueError("Unknown suffix {!r}".format(suffix))
2904
except IndexError as e:
2905
raise ValueError(*(e.args))
1560
raise ValueError(u"Unknown suffix %r" % suffix)
1561
except (ValueError, IndexError), e:
1562
raise ValueError(e.message)
2906
1563
timevalue += delta
2907
1564
return timevalue
2908
1565
2909
1566
2910
def daemon(nochdir=False, noclose=False):
1567
def if_nametoindex(interface):
1568
"""Call the C function if_nametoindex(), or equivalent
1569
1570
Note: This function cannot accept a unicode string."""
1571
global if_nametoindex
1572
try:
1573
if_nametoindex = (ctypes.cdll.LoadLibrary
1574
(ctypes.util.find_library(u"c"))
1575
.if_nametoindex)
1576
except (OSError, AttributeError):
1577
logger.warning(u"Doing if_nametoindex the hard way")
1578
def if_nametoindex(interface):
1579
"Get an interface index the hard way, i.e. using fcntl()"
1580
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1581
with contextlib.closing(socket.socket()) as s:
1582
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1583
struct.pack(str(u"16s16x"),
1584
interface))
1585
interface_index = struct.unpack(str(u"I"),
1586
ifreq[16:20])[0]
1587
return interface_index
1588
return if_nametoindex(interface)
1589
1590
1591
def daemon(nochdir = False, noclose = False):
2911
1592
"""See daemon(3). Standard BSD Unix function.
2912
1593
2913
1594
This should really exist as os.daemon, but it doesn't (yet)."""
2914
1595
if os.fork():
2915
1596
sys.exit()
2916
1597
os.setsid()
2917
1598
if not nochdir:
2918
os.chdir("/")
1599
os.chdir(u"/")
2919
1600
if os.fork():
2920
1601
sys.exit()
2921
1602
if not noclose:
2922
1603
# Close all standard open file descriptors
2923
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1604
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2924
1605
if not stat.S_ISCHR(os.fstat(null).st_mode):
2925
1606
raise OSError(errno.ENODEV,
2926
"{} not a character device"
2927
.format(os.devnull))
1607
u"%s not a character device"
1608
% os.path.devnull)
2928
1609
os.dup2(null, sys.stdin.fileno())
2929
1610
os.dup2(null, sys.stdout.fileno())
2930
1611
os.dup2(null, sys.stderr.fileno())
2933
1614
2934
1615
2935
1616
def main():
2936
1617
2937
1618
##################################################################
2938
1619
# Parsing of options, both command line and config file
2939
2940
parser = argparse.ArgumentParser()
2941
parser.add_argument("-v", "--version", action="version",
2942
version="%(prog)s {}".format(version),
2943
help="show version number and exit")
2944
parser.add_argument("-i", "--interface", metavar="IF",
2945
help="Bind to interface IF")
2946
parser.add_argument("-a", "--address",
2947
help="Address to listen for requests on")
2948
parser.add_argument("-p", "--port", type=int,
2949
help="Port number to receive requests on")
2950
parser.add_argument("--check", action="store_true",
2951
help="Run self-test")
2952
parser.add_argument("--debug", action="store_true",
2953
help="Debug mode; run in foreground and log"
2954
" to terminal", default=None)
2955
parser.add_argument("--debuglevel", metavar="LEVEL",
2956
help="Debug level for stdout output")
2957
parser.add_argument("--priority", help="GnuTLS"
2958
" priority string (see GnuTLS documentation)")
2959
parser.add_argument("--servicename",
2960
metavar="NAME", help="Zeroconf service name")
2961
parser.add_argument("--configdir",
2962
default="/etc/mandos", metavar="DIR",
2963
help="Directory to search for configuration"
2964
" files")
2965
parser.add_argument("--no-dbus", action="store_false",
2966
dest="use_dbus", help="Do not provide D-Bus"
2967
" system bus interface", default=None)
2968
parser.add_argument("--no-ipv6", action="store_false",
2969
dest="use_ipv6", help="Do not use IPv6",
2970
default=None)
2971
parser.add_argument("--no-restore", action="store_false",
2972
dest="restore", help="Do not restore stored"
2973
" state", default=None)
2974
parser.add_argument("--socket", type=int,
2975
help="Specify a file descriptor to a network"
2976
" socket to use instead of creating one")
2977
parser.add_argument("--statedir", metavar="DIR",
2978
help="Directory to save/restore state in")
2979
parser.add_argument("--foreground", action="store_true",
2980
help="Run in foreground", default=None)
2981
parser.add_argument("--no-zeroconf", action="store_false",
2982
dest="zeroconf", help="Do not use Zeroconf",
2983
default=None)
2984
2985
options = parser.parse_args()
2986
1620
1621
parser = optparse.OptionParser(version = "%%prog %s" % version)
1622
parser.add_option("-i", u"--interface", type=u"string",
1623
metavar="IF", help=u"Bind to interface IF")
1624
parser.add_option("-a", u"--address", type=u"string",
1625
help=u"Address to listen for requests on")
1626
parser.add_option("-p", u"--port", type=u"int",
1627
help=u"Port number to receive requests on")
1628
parser.add_option("--check", action=u"store_true",
1629
help=u"Run self-test")
1630
parser.add_option("--debug", action=u"store_true",
1631
help=u"Debug mode; run in foreground and log to"
1632
u" terminal")
1633
parser.add_option("--debuglevel", type=u"string", metavar="Level",
1634
help=u"Debug level for stdout output")
1635
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1636
u" priority string (see GnuTLS documentation)")
1637
parser.add_option("--servicename", type=u"string",
1638
metavar=u"NAME", help=u"Zeroconf service name")
1639
parser.add_option("--configdir", type=u"string",
1640
default=u"/etc/mandos", metavar=u"DIR",
1641
help=u"Directory to search for configuration"
1642
u" files")
1643
parser.add_option("--no-dbus", action=u"store_false",
1644
dest=u"use_dbus", help=u"Do not provide D-Bus"
1645
u" system bus interface")
1646
parser.add_option("--no-ipv6", action=u"store_false",
1647
dest=u"use_ipv6", help=u"Do not use IPv6")
1648
options = parser.parse_args()[0]
1649
1650
if options.check:
1651
import doctest
1652
doctest.testmod()
1653
sys.exit()
1654
2987
1655
# Default values for config file for server-global settings
2988
if gnutls.has_rawpk:
2989
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
2990
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
2991
else:
2992
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2993
":+SIGN-DSA-SHA256")
2994
server_defaults = {"interface": "",
2995
"address": "",
2996
"port": "",
2997
"debug": "False",
2998
"priority": priority,
2999
"servicename": "Mandos",
3000
"use_dbus": "True",
3001
"use_ipv6": "True",
3002
"debuglevel": "",
3003
"restore": "True",
3004
"socket": "",
3005
"statedir": "/var/lib/mandos",
3006
"foreground": "False",
3007
"zeroconf": "True",
3008
}
3009
del priority
3010
1656
server_defaults = { u"interface": u"",
1657
u"address": u"",
1658
u"port": u"",
1659
u"debug": u"False",
1660
u"priority":
1661
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1662
u"servicename": u"Mandos",
1663
u"use_dbus": u"True",
1664
u"use_ipv6": u"True",
1665
u"debuglevel": u"",
1666
}
1667
3011
1668
# Parse config file for server-global settings
3012
server_config = configparser.ConfigParser(server_defaults)
1669
server_config = configparser.SafeConfigParser(server_defaults)
3013
1670
del server_defaults
3014
server_config.read(os.path.join(options.configdir, "mandos.conf"))
3015
# Convert the ConfigParser object to a dict
1671
server_config.read(os.path.join(options.configdir,
1672
u"mandos.conf"))
1673
# Convert the SafeConfigParser object to a dict
3016
1674
server_settings = server_config.defaults()
3017
1675
# Use the appropriate methods on the non-string config options
3018
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3019
"foreground", "zeroconf"):
3020
server_settings[option] = server_config.getboolean("DEFAULT",
1676
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1677
server_settings[option] = server_config.getboolean(u"DEFAULT",
3021
1678
option)
3022
1679
if server_settings["port"]:
3023
server_settings["port"] = server_config.getint("DEFAULT",
3024
"port")
3025
if server_settings["socket"]:
3026
server_settings["socket"] = server_config.getint("DEFAULT",
3027
"socket")
3028
# Later, stdin will, and stdout and stderr might, be dup'ed
3029
# over with an opened os.devnull. But we don't want this to
3030
# happen with a supplied network socket.
3031
if 0 <= server_settings["socket"] <= 2:
3032
server_settings["socket"] = os.dup(server_settings
3033
["socket"])
1680
server_settings["port"] = server_config.getint(u"DEFAULT",
1681
u"port")
3034
1682
del server_config
3035
1683
3036
1684
# Override the settings from the config file with command line
3037
1685
# options, if set.
3038
for option in ("interface", "address", "port", "debug",
3039
"priority", "servicename", "configdir", "use_dbus",
3040
"use_ipv6", "debuglevel", "restore", "statedir",
3041
"socket", "foreground", "zeroconf"):
1686
for option in (u"interface", u"address", u"port", u"debug",
1687
u"priority", u"servicename", u"configdir",
1688
u"use_dbus", u"use_ipv6", u"debuglevel"):
3042
1689
value = getattr(options, option)
3043
1690
if value is not None:
3044
1691
server_settings[option] = value
3045
1692
del options
3046
1693
# Force all strings to be unicode
3047
1694
for option in server_settings.keys():
3048
if isinstance(server_settings[option], bytes):
3049
server_settings[option] = (server_settings[option]
3050
.decode("utf-8"))
3051
# Force all boolean options to be boolean
3052
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3053
"foreground", "zeroconf"):
3054
server_settings[option] = bool(server_settings[option])
3055
# Debug implies foreground
3056
if server_settings["debug"]:
3057
server_settings["foreground"] = True
1695
if type(server_settings[option]) is str:
1696
server_settings[option] = unicode(server_settings[option])
3058
1697
# Now we have our good server settings in "server_settings"
3059
1698
3060
1699
##################################################################
3061
3062
if (not server_settings["zeroconf"]
3063
and not (server_settings["port"]
3064
or server_settings["socket"] != "")):
3065
parser.error("Needs port or socket to work without Zeroconf")
3066
1700
3067
1701
# For convenience
3068
debug = server_settings["debug"]
3069
debuglevel = server_settings["debuglevel"]
3070
use_dbus = server_settings["use_dbus"]
3071
use_ipv6 = server_settings["use_ipv6"]
3072
stored_state_path = os.path.join(server_settings["statedir"],
3073
stored_state_file)
3074
foreground = server_settings["foreground"]
3075
zeroconf = server_settings["zeroconf"]
3076
3077
if debug:
3078
initlogger(debug, logging.DEBUG)
3079
else:
3080
if not debuglevel:
3081
initlogger(debug)
3082
else:
3083
level = getattr(logging, debuglevel.upper())
3084
initlogger(debug, level)
3085
3086
if server_settings["servicename"] != "Mandos":
3087
syslogger.setFormatter(
3088
logging.Formatter('Mandos ({}) [%(process)d]:'
3089
' %(levelname)s: %(message)s'.format(
3090
server_settings["servicename"])))
3091
1702
debug = server_settings[u"debug"]
1703
debuglevel = server_settings[u"debuglevel"]
1704
use_dbus = server_settings[u"use_dbus"]
1705
use_ipv6 = server_settings[u"use_ipv6"]
1706
1707
if server_settings[u"servicename"] != u"Mandos":
1708
syslogger.setFormatter(logging.Formatter
1709
(u'Mandos (%s) [%%(process)d]:'
1710
u' %%(levelname)s: %%(message)s'
1711
% server_settings[u"servicename"]))
1712
3092
1713
# Parse config file with clients
3093
client_config = configparser.ConfigParser(Client.client_defaults)
3094
client_config.read(os.path.join(server_settings["configdir"],
3095
"clients.conf"))
3096
1714
client_defaults = { u"timeout": u"1h",
1715
u"interval": u"5m",
1716
u"checker": u"fping -q -- %%(host)s",
1717
u"host": u"",
1718
u"approved_delay": u"0s",
1719
u"approved_duration": u"1s",
1720
}
1721
client_config = configparser.SafeConfigParser(client_defaults)
1722
client_config.read(os.path.join(server_settings[u"configdir"],
1723
u"clients.conf"))
1724
3097
1725
global mandos_dbus_service
3098
1726
mandos_dbus_service = None
3099
3100
socketfd = None
3101
if server_settings["socket"] != "":
3102
socketfd = server_settings["socket"]
3103
tcp_server = MandosServer(
3104
(server_settings["address"], server_settings["port"]),
3105
ClientHandler,
3106
interface=(server_settings["interface"] or None),
3107
use_ipv6=use_ipv6,
3108
gnutls_priority=server_settings["priority"],
3109
use_dbus=use_dbus,
3110
socketfd=socketfd)
3111
if not foreground:
3112
pidfilename = "/run/mandos.pid"
3113
if not os.path.isdir("/run/."):
3114
pidfilename = "/var/run/mandos.pid"
3115
pidfile = None
3116
try:
3117
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3118
except IOError as e:
3119
logger.error("Could not open file %r", pidfilename,
3120
exc_info=e)
3121
3122
for name, group in (("_mandos", "_mandos"),
3123
("mandos", "mandos"),
3124
("nobody", "nogroup")):
3125
try:
3126
uid = pwd.getpwnam(name).pw_uid
3127
gid = pwd.getpwnam(group).pw_gid
3128
break
1727
1728
tcp_server = MandosServer((server_settings[u"address"],
1729
server_settings[u"port"]),
1730
ClientHandler,
1731
interface=server_settings[u"interface"],
1732
use_ipv6=use_ipv6,
1733
gnutls_priority=
1734
server_settings[u"priority"],
1735
use_dbus=use_dbus)
1736
pidfilename = u"/var/run/mandos.pid"
1737
try:
1738
pidfile = open(pidfilename, u"w")
1739
except IOError:
1740
logger.error(u"Could not open file %r", pidfilename)
1741
1742
try:
1743
uid = pwd.getpwnam(u"_mandos").pw_uid
1744
gid = pwd.getpwnam(u"_mandos").pw_gid
1745
except KeyError:
1746
try:
1747
uid = pwd.getpwnam(u"mandos").pw_uid
1748
gid = pwd.getpwnam(u"mandos").pw_gid
3129
1749
except KeyError:
3130
continue
3131
else:
3132
uid = 65534
3133
gid = 65534
1750
try:
1751
uid = pwd.getpwnam(u"nobody").pw_uid
1752
gid = pwd.getpwnam(u"nobody").pw_gid
1753
except KeyError:
1754
uid = 65534
1755
gid = 65534
3134
1756
try:
3135
1757
os.setgid(gid)
3136
1758
os.setuid(uid)
3137
if debug:
3138
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3139
gid))
3140
except OSError as error:
3141
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3142
.format(uid, gid, os.strerror(error.errno)))
3143
if error.errno != errno.EPERM:
3144
raise
1759
except OSError, error:
1760
if error[0] != errno.EPERM:
1761
raise error
1762
1763
# Enable all possible GnuTLS debugging
1764
1765
1766
if not debug and not debuglevel:
1767
syslogger.setLevel(logging.WARNING)
1768
console.setLevel(logging.WARNING)
1769
if debuglevel:
1770
level = getattr(logging, debuglevel.upper())
1771
syslogger.setLevel(level)
1772
console.setLevel(level)
3145
1773
3146
1774
if debug:
3147
# Enable all possible GnuTLS debugging
3148
3149
1775
# "Use a log level over 10 to enable all debugging options."
3150
1776
# - GnuTLS manual
3151
gnutls.global_set_log_level(11)
3152
3153
@gnutls.log_func
1777
gnutls.library.functions.gnutls_global_set_log_level(11)
1778
1779
@gnutls.library.types.gnutls_log_func
3154
1780
def debug_gnutls(level, string):
3155
logger.debug("GnuTLS: %s", string[:-1])
3156
3157
gnutls.global_set_log_function(debug_gnutls)
1781
logger.debug(u"GnuTLS: %s", string[:-1])
1782
1783
(gnutls.library.functions
1784
.gnutls_global_set_log_function(debug_gnutls))
3158
1785
3159
1786
# Redirect stdin so all checkers get /dev/null
3160
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1787
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3161
1788
os.dup2(null, sys.stdin.fileno())
3162
1789
if null > 2:
3163
1790
os.close(null)
3164
3165
# Need to fork before connecting to D-Bus
3166
if not foreground:
3167
# Close all input and output, do double fork, etc.
3168
daemon()
3169
3170
if gi.version_info < (3, 10, 2):
3171
# multiprocessing will use threads, so before we use GLib we
3172
# need to inform GLib that threads will be used.
3173
GLib.threads_init()
3174
1791
else:
1792
# No console logging
1793
logger.removeHandler(console)
1794
1795
3175
1796
global main_loop
3176
1797
# From the Avahi example code
3177
DBusGMainLoop(set_as_default=True)
3178
main_loop = GLib.MainLoop()
1798
DBusGMainLoop(set_as_default=True )
1799
main_loop = gobject.MainLoop()
3179
1800
bus = dbus.SystemBus()
3180
1801
# End of Avahi example code
3181
1802
if use_dbus:
3182
1803
try:
3183
bus_name = dbus.service.BusName("se.recompile.Mandos",
3184
bus,
3185
do_not_queue=True)
3186
old_bus_name = dbus.service.BusName(
3187
"se.bsnet.fukt.Mandos", bus,
3188
do_not_queue=True)
3189
except dbus.exceptions.DBusException as e:
3190
logger.error("Disabling D-Bus:", exc_info=e)
1804
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
1805
bus, do_not_queue=True)
1806
except dbus.exceptions.NameExistsException, e:
1807
logger.error(unicode(e) + u", disabling D-Bus")
3191
1808
use_dbus = False
3192
server_settings["use_dbus"] = False
1809
server_settings[u"use_dbus"] = False
3193
1810
tcp_server.use_dbus = False
3194
if zeroconf:
3195
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3196
service = AvahiServiceToSyslog(
3197
name=server_settings["servicename"],
3198
servicetype="_mandos._tcp",
3199
protocol=protocol,
3200
bus=bus)
3201
if server_settings["interface"]:
3202
service.interface = if_nametoindex(
3203
server_settings["interface"].encode("utf-8"))
1811
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1812
service = AvahiService(name = server_settings[u"servicename"],
1813
servicetype = u"_mandos._tcp",
1814
protocol = protocol, bus = bus)
1815
if server_settings["interface"]:
1816
service.interface = (if_nametoindex
1817
(str(server_settings[u"interface"])))
3204
1818
1819
if not debug:
1820
# Close all input and output, do double fork, etc.
1821
daemon()
1822
3205
1823
global multiprocessing_manager
3206
1824
multiprocessing_manager = multiprocessing.Manager()
3207
1825
3208
1826
client_class = Client
3209
1827
if use_dbus:
3210
client_class = functools.partial(ClientDBus, bus=bus)
3211
3212
client_settings = Client.config_parser(client_config)
3213
old_client_settings = {}
3214
clients_data = {}
3215
3216
# This is used to redirect stdout and stderr for checker processes
3217
global wnull
3218
wnull = open(os.devnull, "w") # A writable /dev/null
3219
# Only used if server is running in foreground but not in debug
3220
# mode
3221
if debug or not foreground:
3222
wnull.close()
3223
3224
# Get client data and settings from last running state.
3225
if server_settings["restore"]:
3226
try:
3227
with open(stored_state_path, "rb") as stored_state:
3228
if sys.version_info.major == 2:
3229
clients_data, old_client_settings = pickle.load(
3230
stored_state)
3231
else:
3232
bytes_clients_data, bytes_old_client_settings = (
3233
pickle.load(stored_state, encoding="bytes"))
3234
# Fix bytes to strings
3235
# clients_data
3236
# .keys()
3237
clients_data = {(key.decode("utf-8")
3238
if isinstance(key, bytes)
3239
else key): value
3240
for key, value in
3241
bytes_clients_data.items()}
3242
del bytes_clients_data
3243
for key in clients_data:
3244
value = {(k.decode("utf-8")
3245
if isinstance(k, bytes) else k): v
3246
for k, v in
3247
clients_data[key].items()}
3248
clients_data[key] = value
3249
# .client_structure
3250
value["client_structure"] = [
3251
(s.decode("utf-8")
3252
if isinstance(s, bytes)
3253
else s) for s in
3254
value["client_structure"]]
3255
# .name, .host, and .checker_command
3256
for k in ("name", "host", "checker_command"):
3257
if isinstance(value[k], bytes):
3258
value[k] = value[k].decode("utf-8")
3259
if "key_id" not in value:
3260
value["key_id"] = ""
3261
elif "fingerprint" not in value:
3262
value["fingerprint"] = ""
3263
# old_client_settings
3264
# .keys()
3265
old_client_settings = {
3266
(key.decode("utf-8")
3267
if isinstance(key, bytes)
3268
else key): value
3269
for key, value in
3270
bytes_old_client_settings.items()}
3271
del bytes_old_client_settings
3272
# .host and .checker_command
3273
for value in old_client_settings.values():
3274
for attribute in ("host", "checker_command"):
3275
if isinstance(value[attribute], bytes):
3276
value[attribute] = (value[attribute]
3277
.decode("utf-8"))
3278
os.remove(stored_state_path)
3279
except IOError as e:
3280
if e.errno == errno.ENOENT:
3281
logger.warning("Could not load persistent state:"
3282
" {}".format(os.strerror(e.errno)))
3283
else:
3284
logger.critical("Could not load persistent state:",
3285
exc_info=e)
3286
raise
3287
except EOFError as e:
3288
logger.warning("Could not load persistent state: "
3289
"EOFError:",
3290
exc_info=e)
3291
3292
with PGPEngine() as pgp:
3293
for client_name, client in clients_data.items():
3294
# Skip removed clients
3295
if client_name not in client_settings:
3296
continue
3297
3298
# Decide which value to use after restoring saved state.
3299
# We have three different values: Old config file,
3300
# new config file, and saved state.
3301
# New config value takes precedence if it differs from old
3302
# config value, otherwise use saved state.
3303
for name, value in client_settings[client_name].items():
3304
try:
3305
# For each value in new config, check if it
3306
# differs from the old config value (Except for
3307
# the "secret" attribute)
3308
if (name != "secret"
3309
and (value !=
3310
old_client_settings[client_name][name])):
3311
client[name] = value
3312
except KeyError:
3313
pass
3314
3315
# Clients who has passed its expire date can still be
3316
# enabled if its last checker was successful. A Client
3317
# whose checker succeeded before we stored its state is
3318
# assumed to have successfully run all checkers during
3319
# downtime.
3320
if client["enabled"]:
3321
if datetime.datetime.utcnow() >= client["expires"]:
3322
if not client["last_checked_ok"]:
3323
logger.warning(
3324
"disabling client {} - Client never "
3325
"performed a successful checker".format(
3326
client_name))
3327
client["enabled"] = False
3328
elif client["last_checker_status"] != 0:
3329
logger.warning(
3330
"disabling client {} - Client last"
3331
" checker failed with error code"
3332
" {}".format(
3333
client_name,
3334
client["last_checker_status"]))
3335
client["enabled"] = False
3336
else:
3337
client["expires"] = (
3338
datetime.datetime.utcnow()
3339
+ client["timeout"])
3340
logger.debug("Last checker succeeded,"
3341
" keeping {} enabled".format(
3342
client_name))
1828
client_class = functools.partial(ClientDBus, bus = bus)
1829
def client_config_items(config, section):
1830
special_settings = {
1831
"approved_by_default":
1832
lambda: config.getboolean(section,
1833
"approved_by_default"),
1834
}
1835
for name, value in config.items(section):
3343
1836
try:
3344
client["secret"] = pgp.decrypt(
3345
client["encrypted_secret"],
3346
client_settings[client_name]["secret"])
3347
except PGPError:
3348
# If decryption fails, we use secret from new settings
3349
logger.debug("Failed to decrypt {} old secret".format(
3350
client_name))
3351
client["secret"] = (client_settings[client_name]
3352
["secret"])
3353
3354
# Add/remove clients based on new changes made to config
3355
for client_name in (set(old_client_settings)
3356
- set(client_settings)):
3357
del clients_data[client_name]
3358
for client_name in (set(client_settings)
3359
- set(old_client_settings)):
3360
clients_data[client_name] = client_settings[client_name]
3361
3362
# Create all client objects
3363
for client_name, client in clients_data.items():
3364
tcp_server.clients[client_name] = client_class(
3365
name=client_name,
3366
settings=client,
3367
server_settings=server_settings)
3368
1837
yield (name, special_settings[name]())
1838
except KeyError:
1839
yield (name, value)
1840
1841
tcp_server.clients.update(set(
1842
client_class(name = section,
1843
config= dict(client_config_items(
1844
client_config, section)))
1845
for section in client_config.sections()))
3369
1846
if not tcp_server.clients:
3370
logger.warning("No clients defined")
3371
3372
if not foreground:
3373
if pidfile is not None:
1847
logger.warning(u"No clients defined")
1848
1849
try:
1850
with pidfile:
3374
1851
pid = os.getpid()
3375
try:
3376
with pidfile:
3377
print(pid, file=pidfile)
3378
except IOError:
3379
logger.error("Could not write to file %r with PID %d",
3380
pidfilename, pid)
1852
pidfile.write(str(pid) + "\n")
3381
1853
del pidfile
3382
del pidfilename
3383
3384
for termsig in (signal.SIGHUP, signal.SIGTERM):
3385
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3386
lambda: main_loop.quit() and False)
3387
1854
except IOError:
1855
logger.error(u"Could not write to file %r with PID %d",
1856
pidfilename, pid)
1857
except NameError:
1858
# "pidfile" was never created
1859
pass
1860
del pidfilename
1861
1862
if not debug:
1863
signal.signal(signal.SIGINT, signal.SIG_IGN)
1864
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1865
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1866
3388
1867
if use_dbus:
3389
3390
@alternate_dbus_interfaces(
3391
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3392
class MandosDBusService(DBusObjectWithObjectManager):
1868
class MandosDBusService(dbus.service.Object):
3393
1869
"""A D-Bus proxy object"""
3394
3395
1870
def __init__(self):
3396
dbus.service.Object.__init__(self, bus, "/")
3397
3398
_interface = "se.recompile.Mandos"
3399
3400
@dbus.service.signal(_interface, signature="o")
1871
dbus.service.Object.__init__(self, bus, u"/")
1872
_interface = u"se.bsnet.fukt.Mandos"
1873
1874
@dbus.service.signal(_interface, signature=u"o")
3401
1875
def ClientAdded(self, objpath):
3402
1876
"D-Bus signal"
3403
1877
pass
3404
3405
@dbus.service.signal(_interface, signature="ss")
3406
def ClientNotFound(self, key_id, address):
1878
1879
@dbus.service.signal(_interface, signature=u"ss")
1880
def ClientNotFound(self, fingerprint, address):
3407
1881
"D-Bus signal"
3408
1882
pass
3409
3410
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3411
"true"})
3412
@dbus.service.signal(_interface, signature="os")
1883
1884
@dbus.service.signal(_interface, signature=u"os")
3413
1885
def ClientRemoved(self, objpath, name):
3414
1886
"D-Bus signal"
3415
1887
pass
3416
3417
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3418
"true"})
3419
@dbus.service.method(_interface, out_signature="ao")
1888
1889
@dbus.service.method(_interface, out_signature=u"ao")
3420
1890
def GetAllClients(self):
3421
1891
"D-Bus method"
3422
return dbus.Array(c.dbus_object_path for c in
3423
tcp_server.clients.values())
3424
3425
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3426
"true"})
1892
return dbus.Array(c.dbus_object_path
1893
for c in tcp_server.clients)
1894
3427
1895
@dbus.service.method(_interface,
3428
out_signature="a{oa{sv}}")
1896
out_signature=u"a{oa{sv}}")
3429
1897
def GetAllClientsWithProperties(self):
3430
1898
"D-Bus method"
3431
1899
return dbus.Dictionary(
3432
{c.dbus_object_path: c.GetAll(
3433
"se.recompile.Mandos.Client")
3434
for c in tcp_server.clients.values()},
3435
signature="oa{sv}")
3436
3437
@dbus.service.method(_interface, in_signature="o")
1900
((c.dbus_object_path, c.GetAll(u""))
1901
for c in tcp_server.clients),
1902
signature=u"oa{sv}")
1903
1904
@dbus.service.method(_interface, in_signature=u"o")
3438
1905
def RemoveClient(self, object_path):
3439
1906
"D-Bus method"
3440
for c in tcp_server.clients.values():
1907
for c in tcp_server.clients:
3441
1908
if c.dbus_object_path == object_path:
3442
del tcp_server.clients[c.name]
1909
tcp_server.clients.remove(c)
3443
1910
c.remove_from_connection()
3444
# Don't signal the disabling
1911
# Don't signal anything except ClientRemoved
3445
1912
c.disable(quiet=True)
3446
# Emit D-Bus signal for removal
3447
self.client_removed_signal(c)
1913
# Emit D-Bus signal
1914
self.ClientRemoved(object_path, c.name)
3448
1915
return
3449
1916
raise KeyError(object_path)
3450
1917
3451
1918
del _interface
3452
3453
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3454
out_signature="a{oa{sa{sv}}}")
3455
def GetManagedObjects(self):
3456
"""D-Bus method"""
3457
return dbus.Dictionary(
3458
{client.dbus_object_path:
3459
dbus.Dictionary(
3460
{interface: client.GetAll(interface)
3461
for interface in
3462
client._get_all_interface_names()})
3463
for client in tcp_server.clients.values()})
3464
3465
def client_added_signal(self, client):
3466
"""Send the new standard signal and the old signal"""
3467
if use_dbus:
3468
# New standard signal
3469
self.InterfacesAdded(
3470
client.dbus_object_path,
3471
dbus.Dictionary(
3472
{interface: client.GetAll(interface)
3473
for interface in
3474
client._get_all_interface_names()}))
3475
# Old signal
3476
self.ClientAdded(client.dbus_object_path)
3477
3478
def client_removed_signal(self, client):
3479
"""Send the new standard signal and the old signal"""
3480
if use_dbus:
3481
# New standard signal
3482
self.InterfacesRemoved(
3483
client.dbus_object_path,
3484
client._get_all_interface_names())
3485
# Old signal
3486
self.ClientRemoved(client.dbus_object_path,
3487
client.name)
3488
1919
3489
1920
mandos_dbus_service = MandosDBusService()
3490
3491
# Save modules to variables to exempt the modules from being
3492
# unloaded before the function registered with atexit() is run.
3493
mp = multiprocessing
3494
wn = wnull
3495
1921
3496
1922
def cleanup():
3497
1923
"Cleanup function; run on exit"
3498
if zeroconf:
3499
service.cleanup()
3500
3501
mp.active_children()
3502
wn.close()
3503
if not (tcp_server.clients or client_settings):
3504
return
3505
3506
# Store client before exiting. Secrets are encrypted with key
3507
# based on what config file has. If config file is
3508
# removed/edited, old secret will thus be unrecovable.
3509
clients = {}
3510
with PGPEngine() as pgp:
3511
for client in tcp_server.clients.values():
3512
key = client_settings[client.name]["secret"]
3513
client.encrypted_secret = pgp.encrypt(client.secret,
3514
key)
3515
client_dict = {}
3516
3517
# A list of attributes that can not be pickled
3518
# + secret.
3519
exclude = {"bus", "changedstate", "secret",
3520
"checker", "server_settings"}
3521
for name, typ in inspect.getmembers(dbus.service
3522
.Object):
3523
exclude.add(name)
3524
3525
client_dict["encrypted_secret"] = (client
3526
.encrypted_secret)
3527
for attr in client.client_structure:
3528
if attr not in exclude:
3529
client_dict[attr] = getattr(client, attr)
3530
3531
clients[client.name] = client_dict
3532
del client_settings[client.name]["secret"]
3533
3534
try:
3535
with tempfile.NamedTemporaryFile(
3536
mode='wb',
3537
suffix=".pickle",
3538
prefix='clients-',
3539
dir=os.path.dirname(stored_state_path),
3540
delete=False) as stored_state:
3541
pickle.dump((clients, client_settings), stored_state,
3542
protocol=2)
3543
tempname = stored_state.name
3544
os.rename(tempname, stored_state_path)
3545
except (IOError, OSError) as e:
3546
if not debug:
3547
try:
3548
os.remove(tempname)
3549
except NameError:
3550
pass
3551
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3552
logger.warning("Could not save persistent state: {}"
3553
.format(os.strerror(e.errno)))
3554
else:
3555
logger.warning("Could not save persistent state:",
3556
exc_info=e)
3557
raise
3558
3559
# Delete all clients, and settings from config
1924
service.cleanup()
1925
3560
1926
while tcp_server.clients:
3561
name, client = tcp_server.clients.popitem()
1927
client = tcp_server.clients.pop()
3562
1928
if use_dbus:
3563
1929
client.remove_from_connection()
3564
# Don't signal the disabling
1930
client.disable_hook = None
1931
# Don't signal anything except ClientRemoved
3565
1932
client.disable(quiet=True)
3566
# Emit D-Bus signal for removal
3567
1933
if use_dbus:
3568
mandos_dbus_service.client_removed_signal(client)
3569
client_settings.clear()
3570
1934
# Emit D-Bus signal
1935
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
1936
client.name)
1937
3571
1938
atexit.register(cleanup)
3572
3573
for client in tcp_server.clients.values():
1939
1940
for client in tcp_server.clients:
3574
1941
if use_dbus:
3575
# Emit D-Bus signal for adding
3576
mandos_dbus_service.client_added_signal(client)
3577
# Need to initiate checking of clients
3578
if client.enabled:
3579
client.init_checker()
3580
1942
# Emit D-Bus signal
1943
mandos_dbus_service.ClientAdded(client.dbus_object_path)
1944
client.enable()
1945
3581
1946
tcp_server.enable()
3582
1947
tcp_server.server_activate()
3583
1948
3584
1949
# Find out what port we got
3585
if zeroconf:
3586
service.port = tcp_server.socket.getsockname()[1]
1950
service.port = tcp_server.socket.getsockname()[1]
3587
1951
if use_ipv6:
3588
logger.info("Now listening on address %r, port %d,"
3589
" flowinfo %d, scope_id %d",
3590
*tcp_server.socket.getsockname())
1952
logger.info(u"Now listening on address %r, port %d,"
1953
" flowinfo %d, scope_id %d"
1954
% tcp_server.socket.getsockname())
3591
1955
else: # IPv4
3592
logger.info("Now listening on address %r, port %d",
3593
*tcp_server.socket.getsockname())
3594
3595
# service.interface = tcp_server.socket.getsockname()[3]
3596
1956
logger.info(u"Now listening on address %r, port %d"
1957
% tcp_server.socket.getsockname())
1958
1959
#service.interface = tcp_server.socket.getsockname()[3]
1960
3597
1961
try:
3598
if zeroconf:
3599
# From the Avahi example code
3600
try:
3601
service.activate()
3602
except dbus.exceptions.DBusException as error:
3603
logger.critical("D-Bus Exception", exc_info=error)
3604
cleanup()
3605
sys.exit(1)
3606
# End of Avahi example code
3607
3608
GLib.io_add_watch(
3609
GLib.IOChannel.unix_new(tcp_server.fileno()),
3610
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
3611
lambda *args, **kwargs: (tcp_server.handle_request
3612
(*args[2:], **kwargs) or True))
3613
3614
logger.debug("Starting main loop")
1962
# From the Avahi example code
1963
try:
1964
service.activate()
1965
except dbus.exceptions.DBusException, error:
1966
logger.critical(u"DBusException: %s", error)
1967
cleanup()
1968
sys.exit(1)
1969
# End of Avahi example code
1970
1971
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
1972
lambda *args, **kwargs:
1973
(tcp_server.handle_request
1974
(*args[2:], **kwargs) or True))
1975
1976
logger.debug(u"Starting main loop")
3615
1977
main_loop.run()
3616
except AvahiError as error:
3617
logger.critical("Avahi Error", exc_info=error)
1978
except AvahiError, error:
1979
logger.critical(u"AvahiError: %s", error)
3618
1980
cleanup()
3619
1981
sys.exit(1)
3620
1982
except KeyboardInterrupt:
3621
1983
if debug:
3622
print("", file=sys.stderr)
3623
logger.debug("Server received KeyboardInterrupt")
3624
logger.debug("Server exiting")
1984
print >> sys.stderr
1985
logger.debug(u"Server received KeyboardInterrupt")
1986
logger.debug(u"Server exiting")
3625
1987
# Must run before the D-Bus bus name gets deregistered
3626
1988
cleanup()
3627
1989
3628
3629
def should_only_run_tests():
3630
parser = argparse.ArgumentParser(add_help=False)
3631
parser.add_argument("--check", action='store_true')
3632
args, unknown_args = parser.parse_known_args()
3633
run_tests = args.check
3634
if run_tests:
3635
# Remove --check argument from sys.argv
3636
sys.argv[1:] = unknown_args
3637
return run_tests
3638
3639
# Add all tests from doctest strings
3640
def load_tests(loader, tests, none):
3641
import doctest
3642
tests.addTests(doctest.DocTestSuite())
3643
return tests
3644
3645
1990
if __name__ == '__main__':
3646
try:
3647
if should_only_run_tests():
3648
# Call using ./mandos --check [--verbose]
3649
unittest.main()
3650
else:
3651
main()
3652
finally:
3653
logging.shutdown()
1991
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0