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 237.7.558
- compare with another revision
- download diff
- download tarball
- view history from revision 237.7.558
- Committer: Teddy Hogeborn
- Date: 2019-03-03 16:20:02 UTC
- mto: (237.7.594 trunk)
- mto: This revision was merged to the branch mainline in revision 382.
- Revision ID: teddy@recompile.se-20190303162002-y0ezr98f71d0jfro
mandos-ctl: Refactor; test PrintTableCmd instead of TableOfClients
* mandos-ctl (Test_TableOfClients): Removed.
(TestCmd): New abstract class for tests for command classes.
(TestPrintTableCmd): New.
* mandos-ctl (Test_TableOfClients): Removed.
(TestCmd): New abstract class for tests for command classes.
(TestPrintTableCmd): New.
- files added:
- bugs.xml
- debian/source
- debian/upstream
- network-hooks.d
- plugin-helpers
- files removed:
- initramfs-tools-hook-conf
- files modified:
- .bzrignore
added
removed
mandos
1
1
#!/usr/bin/python
2
2
# -*- mode: python; coding: utf-8 -*-
3
#
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 © 2008,2009 Teddy Hogeborn
15
# Copyright © 2008,2009 Björn Påhlsson
16
#
17
# This program is free software: you can redistribute it and/or modify
18
# it under the terms of the GNU General Public License as published by
14
# Copyright © 2008-2019 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
19
21
# the Free Software Foundation, either version 3 of the License, or
20
22
# (at your option) any later version.
21
23
#
22
# This program is distributed in the hope that it will be useful,
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
24
# Mandos is distributed in the hope that it will be useful, but
25
# WITHOUT ANY WARRANTY; without even the implied warranty of
24
26
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25
27
# GNU General Public License for more details.
26
#
28
#
27
29
# You should have received a copy of the GNU General Public License
28
# along with this program. If not, see
29
# <http://www.gnu.org/licenses/>.
30
#
31
# Contact the authors at <mandos@fukt.bsnet.se>.
32
#
33
34
from __future__ import division, with_statement, absolute_import
35
36
import SocketServer as socketserver
30
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
31
#
32
# Contact the authors at <mandos@recompile.se>.
33
#
34
35
from __future__ import (division, absolute_import, print_function,
36
unicode_literals)
37
38
try:
39
from future_builtins import *
40
except ImportError:
41
pass
42
43
try:
44
import SocketServer as socketserver
45
except ImportError:
46
import socketserver
37
47
import socket
38
import optparse
48
import argparse
39
49
import datetime
40
50
import errno
41
import gnutls.crypto
42
import gnutls.connection
43
import gnutls.errors
44
import gnutls.library.functions
45
import gnutls.library.constants
46
import gnutls.library.types
47
import ConfigParser as configparser
51
try:
52
import ConfigParser as configparser
53
except ImportError:
54
import configparser
48
55
import sys
49
56
import re
50
57
import os
59
66
import struct
60
67
import fcntl
61
68
import functools
62
import cPickle as pickle
69
try:
70
import cPickle as pickle
71
except ImportError:
72
import pickle
63
73
import multiprocessing
74
import types
75
import binascii
76
import tempfile
77
import itertools
78
import collections
79
import codecs
64
80
65
81
import dbus
66
82
import dbus.service
67
import gobject
68
import avahi
83
from gi.repository import GLib
69
84
from dbus.mainloop.glib import DBusGMainLoop
70
85
import ctypes
71
86
import ctypes.util
72
87
import xml.dom.minidom
73
88
import inspect
74
89
90
# Try to find the value of SO_BINDTODEVICE:
75
91
try:
92
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
93
# newer, and it is also the most natural place for it:
76
94
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
77
95
except AttributeError:
78
96
try:
97
# This is where SO_BINDTODEVICE was up to and including Python
98
# 2.6, and also 3.2:
79
99
from IN import SO_BINDTODEVICE
80
100
except ImportError:
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)
101
# In Python 2.7 it seems to have been removed entirely.
102
# Try running the C preprocessor:
103
try:
104
cc = subprocess.Popen(["cc", "--language=c", "-E",
105
"/dev/stdin"],
106
stdin=subprocess.PIPE,
107
stdout=subprocess.PIPE)
108
stdout = cc.communicate(
109
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
110
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
111
except (OSError, ValueError, IndexError):
112
# No value found
113
SO_BINDTODEVICE = None
114
115
if sys.version_info.major == 2:
116
str = unicode
117
118
version = "1.8.3"
119
stored_state_file = "clients.pickle"
120
121
logger = logging.getLogger()
122
syslogger = None
123
124
try:
125
if_nametoindex = ctypes.cdll.LoadLibrary(
126
ctypes.util.find_library("c")).if_nametoindex
127
except (OSError, AttributeError):
128
129
def if_nametoindex(interface):
130
"Get an interface index the hard way, i.e. using fcntl()"
131
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
132
with contextlib.closing(socket.socket()) as s:
133
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
134
struct.pack(b"16s16x", interface))
135
interface_index = struct.unpack("I", ifreq[16:20])[0]
136
return interface_index
137
138
139
def copy_function(func):
140
"""Make a copy of a function"""
141
if sys.version_info.major == 2:
142
return types.FunctionType(func.func_code,
143
func.func_globals,
144
func.func_name,
145
func.func_defaults,
146
func.func_closure)
147
else:
148
return types.FunctionType(func.__code__,
149
func.__globals__,
150
func.__name__,
151
func.__defaults__,
152
func.__closure__)
153
154
155
def initlogger(debug, level=logging.WARNING):
156
"""init logger and add loglevel"""
157
158
global syslogger
159
syslogger = (logging.handlers.SysLogHandler(
160
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
161
address="/dev/log"))
162
syslogger.setFormatter(logging.Formatter
163
('Mandos [%(process)d]: %(levelname)s:'
164
' %(message)s'))
165
logger.addHandler(syslogger)
166
167
if debug:
168
console = logging.StreamHandler()
169
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
170
' [%(process)d]:'
171
' %(levelname)s:'
172
' %(message)s'))
173
logger.addHandler(console)
174
logger.setLevel(level)
175
176
177
class PGPError(Exception):
178
"""Exception if encryption/decryption fails"""
179
pass
180
181
182
class PGPEngine(object):
183
"""A simple class for OpenPGP symmetric encryption & decryption"""
184
185
def __init__(self):
186
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
187
self.gpg = "gpg"
188
try:
189
output = subprocess.check_output(["gpgconf"])
190
for line in output.splitlines():
191
name, text, path = line.split(b":")
192
if name == "gpg":
193
self.gpg = path
194
break
195
except OSError as e:
196
if e.errno != errno.ENOENT:
197
raise
198
self.gnupgargs = ['--batch',
199
'--homedir', self.tempdir,
200
'--force-mdc',
201
'--quiet']
202
# Only GPG version 1 has the --no-use-agent option.
203
if self.gpg == "gpg" or self.gpg.endswith("/gpg"):
204
self.gnupgargs.append("--no-use-agent")
205
206
def __enter__(self):
207
return self
208
209
def __exit__(self, exc_type, exc_value, traceback):
210
self._cleanup()
211
return False
212
213
def __del__(self):
214
self._cleanup()
215
216
def _cleanup(self):
217
if self.tempdir is not None:
218
# Delete contents of tempdir
219
for root, dirs, files in os.walk(self.tempdir,
220
topdown=False):
221
for filename in files:
222
os.remove(os.path.join(root, filename))
223
for dirname in dirs:
224
os.rmdir(os.path.join(root, dirname))
225
# Remove tempdir
226
os.rmdir(self.tempdir)
227
self.tempdir = None
228
229
def password_encode(self, password):
230
# Passphrase can not be empty and can not contain newlines or
231
# NUL bytes. So we prefix it and hex encode it.
232
encoded = b"mandos" + binascii.hexlify(password)
233
if len(encoded) > 2048:
234
# GnuPG can't handle long passwords, so encode differently
235
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
236
.replace(b"\n", b"\\n")
237
.replace(b"\0", b"\\x00"))
238
return encoded
239
240
def encrypt(self, data, password):
241
passphrase = self.password_encode(password)
242
with tempfile.NamedTemporaryFile(
243
dir=self.tempdir) as passfile:
244
passfile.write(passphrase)
245
passfile.flush()
246
proc = subprocess.Popen([self.gpg, '--symmetric',
247
'--passphrase-file',
248
passfile.name]
249
+ self.gnupgargs,
250
stdin=subprocess.PIPE,
251
stdout=subprocess.PIPE,
252
stderr=subprocess.PIPE)
253
ciphertext, err = proc.communicate(input=data)
254
if proc.returncode != 0:
255
raise PGPError(err)
256
return ciphertext
257
258
def decrypt(self, data, password):
259
passphrase = self.password_encode(password)
260
with tempfile.NamedTemporaryFile(
261
dir=self.tempdir) as passfile:
262
passfile.write(passphrase)
263
passfile.flush()
264
proc = subprocess.Popen([self.gpg, '--decrypt',
265
'--passphrase-file',
266
passfile.name]
267
+ self.gnupgargs,
268
stdin=subprocess.PIPE,
269
stdout=subprocess.PIPE,
270
stderr=subprocess.PIPE)
271
decrypted_plaintext, err = proc.communicate(input=data)
272
if proc.returncode != 0:
273
raise PGPError(err)
274
return decrypted_plaintext
275
276
277
# Pretend that we have an Avahi module
278
class Avahi(object):
279
"""This isn't so much a class as it is a module-like namespace.
280
It is instantiated once, and simulates having an Avahi module."""
281
IF_UNSPEC = -1 # avahi-common/address.h
282
PROTO_UNSPEC = -1 # avahi-common/address.h
283
PROTO_INET = 0 # avahi-common/address.h
284
PROTO_INET6 = 1 # avahi-common/address.h
285
DBUS_NAME = "org.freedesktop.Avahi"
286
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
287
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
288
DBUS_PATH_SERVER = "/"
289
290
def string_array_to_txt_array(self, t):
291
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
292
for s in t), signature="ay")
293
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
294
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
295
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
296
SERVER_INVALID = 0 # avahi-common/defs.h
297
SERVER_REGISTERING = 1 # avahi-common/defs.h
298
SERVER_RUNNING = 2 # avahi-common/defs.h
299
SERVER_COLLISION = 3 # avahi-common/defs.h
300
SERVER_FAILURE = 4 # avahi-common/defs.h
301
avahi = Avahi()
302
101
303
102
304
class AvahiError(Exception):
103
305
def __init__(self, value, *args, **kwargs):
104
306
self.value = value
105
super(AvahiError, self).__init__(value, *args, **kwargs)
106
def __unicode__(self):
107
return unicode(repr(self.value))
307
return super(AvahiError, self).__init__(value, *args,
308
**kwargs)
309
108
310
109
311
class AvahiServiceError(AvahiError):
110
312
pass
111
313
314
112
315
class AvahiGroupError(AvahiError):
113
316
pass
114
317
115
318
116
319
class AvahiService(object):
117
320
"""An Avahi (Zeroconf) service.
118
321
119
322
Attributes:
120
323
interface: integer; avahi.IF_UNSPEC or an interface index.
121
324
Used to optionally bind to the specified interface.
122
name: string; Example: u'Mandos'
123
type: string; Example: u'_mandos._tcp'.
124
See <http://www.dns-sd.org/ServiceTypes.html>
325
name: string; Example: 'Mandos'
326
type: string; Example: '_mandos._tcp'.
327
See <https://www.iana.org/assignments/service-names-port-numbers>
125
328
port: integer; what port to announce
126
329
TXT: list of strings; TXT record for the service
127
330
domain: string; Domain to publish on, default to .local if empty.
133
336
server: D-Bus Server
134
337
bus: dbus.SystemBus()
135
338
"""
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):
339
340
def __init__(self,
341
interface=avahi.IF_UNSPEC,
342
name=None,
343
servicetype=None,
344
port=None,
345
TXT=None,
346
domain="",
347
host="",
348
max_renames=32768,
349
protocol=avahi.PROTO_UNSPEC,
350
bus=None):
140
351
self.interface = interface
141
352
self.name = name
142
353
self.type = servicetype
150
361
self.group = None # our entry group
151
362
self.server = None
152
363
self.bus = bus
153
def rename(self):
364
self.entry_group_state_changed_match = None
365
366
def rename(self, remove=True):
154
367
"""Derived from the Avahi example code"""
155
368
if self.rename_count >= self.max_renames:
156
logger.critical(u"No suitable Zeroconf service name found"
157
u" after %i retries, exiting.",
369
logger.critical("No suitable Zeroconf service name found"
370
" after %i retries, exiting.",
158
371
self.rename_count)
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 ...",
372
raise AvahiServiceError("Too many renames")
373
self.name = str(
374
self.server.GetAlternativeServiceName(self.name))
375
self.rename_count += 1
376
logger.info("Changing Zeroconf service name to %r ...",
162
377
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()
378
if remove:
379
self.remove()
168
380
try:
169
381
self.add()
170
except dbus.exceptions.DBusException, error:
171
logger.critical(u"DBusException: %s", error)
172
self.cleanup()
173
os._exit(1)
174
self.rename_count += 1
382
except dbus.exceptions.DBusException as error:
383
if (error.get_dbus_name()
384
== "org.freedesktop.Avahi.CollisionError"):
385
logger.info("Local Zeroconf service name collision.")
386
return self.rename(remove=False)
387
else:
388
logger.critical("D-Bus Exception", exc_info=error)
389
self.cleanup()
390
os._exit(1)
391
175
392
def remove(self):
176
393
"""Derived from the Avahi example code"""
394
if self.entry_group_state_changed_match is not None:
395
self.entry_group_state_changed_match.remove()
396
self.entry_group_state_changed_match = None
177
397
if self.group is not None:
178
398
self.group.Reset()
399
179
400
def add(self):
180
401
"""Derived from the Avahi example code"""
402
self.remove()
181
403
if self.group is None:
182
404
self.group = dbus.Interface(
183
405
self.bus.get_object(avahi.DBUS_NAME,
184
406
self.server.EntryGroupNew()),
185
407
avahi.DBUS_INTERFACE_ENTRY_GROUP)
186
self.group.connect_to_signal('StateChanged',
187
self
188
.entry_group_state_changed)
189
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
408
self.entry_group_state_changed_match = (
409
self.group.connect_to_signal(
410
'StateChanged', self.entry_group_state_changed))
411
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
190
412
self.name, self.type)
191
413
self.group.AddService(
192
414
self.interface,
197
419
dbus.UInt16(self.port),
198
420
avahi.string_array_to_txt_array(self.TXT))
199
421
self.group.Commit()
422
200
423
def entry_group_state_changed(self, state, error):
201
424
"""Derived from the Avahi example code"""
202
logger.debug(u"Avahi entry group state change: %i", state)
203
425
logger.debug("Avahi entry group state change: %i", state)
426
204
427
if state == avahi.ENTRY_GROUP_ESTABLISHED:
205
logger.debug(u"Zeroconf service established.")
428
logger.debug("Zeroconf service established.")
206
429
elif state == avahi.ENTRY_GROUP_COLLISION:
207
logger.warning(u"Zeroconf service name collision.")
430
logger.info("Zeroconf service name collision.")
208
431
self.rename()
209
432
elif state == avahi.ENTRY_GROUP_FAILURE:
210
logger.critical(u"Avahi: Error in group state changed %s",
211
unicode(error))
212
raise AvahiGroupError(u"State changed: %s"
213
% unicode(error))
433
logger.critical("Avahi: Error in group state changed %s",
434
str(error))
435
raise AvahiGroupError("State changed: {!s}".format(error))
436
214
437
def cleanup(self):
215
438
"""Derived from the Avahi example code"""
216
439
if self.group is not None:
217
self.group.Free()
440
try:
441
self.group.Free()
442
except (dbus.exceptions.UnknownMethodException,
443
dbus.exceptions.DBusException):
444
pass
218
445
self.group = None
219
def server_state_changed(self, state):
446
self.remove()
447
448
def server_state_changed(self, state, error=None):
220
449
"""Derived from the Avahi example code"""
221
logger.debug(u"Avahi server state change: %i", state)
222
if state == avahi.SERVER_COLLISION:
223
logger.error(u"Zeroconf server name collision")
224
self.remove()
450
logger.debug("Avahi server state change: %i", state)
451
bad_states = {
452
avahi.SERVER_INVALID: "Zeroconf server invalid",
453
avahi.SERVER_REGISTERING: None,
454
avahi.SERVER_COLLISION: "Zeroconf server name collision",
455
avahi.SERVER_FAILURE: "Zeroconf server failure",
456
}
457
if state in bad_states:
458
if bad_states[state] is not None:
459
if error is None:
460
logger.error(bad_states[state])
461
else:
462
logger.error(bad_states[state] + ": %r", error)
463
self.cleanup()
225
464
elif state == avahi.SERVER_RUNNING:
226
self.add()
465
try:
466
self.add()
467
except dbus.exceptions.DBusException as error:
468
if (error.get_dbus_name()
469
== "org.freedesktop.Avahi.CollisionError"):
470
logger.info("Local Zeroconf service name"
471
" collision.")
472
return self.rename(remove=False)
473
else:
474
logger.critical("D-Bus Exception", exc_info=error)
475
self.cleanup()
476
os._exit(1)
477
else:
478
if error is None:
479
logger.debug("Unknown state: %r", state)
480
else:
481
logger.debug("Unknown state: %r: %r", state, error)
482
227
483
def activate(self):
228
484
"""Derived from the Avahi example code"""
229
485
if self.server is None:
230
486
self.server = dbus.Interface(
231
487
self.bus.get_object(avahi.DBUS_NAME,
232
avahi.DBUS_PATH_SERVER),
488
avahi.DBUS_PATH_SERVER,
489
follow_name_owner_changes=True),
233
490
avahi.DBUS_INTERFACE_SERVER)
234
self.server.connect_to_signal(u"StateChanged",
235
self.server_state_changed)
491
self.server.connect_to_signal("StateChanged",
492
self.server_state_changed)
236
493
self.server_state_changed(self.server.GetState())
237
494
238
495
496
class AvahiServiceToSyslog(AvahiService):
497
def rename(self, *args, **kwargs):
498
"""Add the new name to the syslog messages"""
499
ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
500
syslogger.setFormatter(logging.Formatter(
501
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
502
.format(self.name)))
503
return ret
504
505
506
# Pretend that we have a GnuTLS module
507
class GnuTLS(object):
508
"""This isn't so much a class as it is a module-like namespace.
509
It is instantiated once, and simulates having a GnuTLS module."""
510
511
library = ctypes.util.find_library("gnutls")
512
if library is None:
513
library = ctypes.util.find_library("gnutls-deb0")
514
_library = ctypes.cdll.LoadLibrary(library)
515
del library
516
_need_version = b"3.3.0"
517
_tls_rawpk_version = b"3.6.6"
518
519
def __init__(self):
520
# Need to use "self" here, since this method is called before
521
# the assignment to the "gnutls" global variable happens.
522
if self.check_version(self._need_version) is None:
523
raise self.Error("Needs GnuTLS {} or later"
524
.format(self._need_version))
525
526
# Unless otherwise indicated, the constants and types below are
527
# all from the gnutls/gnutls.h C header file.
528
529
# Constants
530
E_SUCCESS = 0
531
E_INTERRUPTED = -52
532
E_AGAIN = -28
533
CRT_OPENPGP = 2
534
CRT_RAWPK = 3
535
CLIENT = 2
536
SHUT_RDWR = 0
537
CRD_CERTIFICATE = 1
538
E_NO_CERTIFICATE_FOUND = -49
539
X509_FMT_DER = 0
540
NO_TICKETS = 1<<10
541
ENABLE_RAWPK = 1<<18
542
CTYPE_PEERS = 3
543
KEYID_USE_SHA256 = 1 # gnutls/x509.h
544
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
545
546
# Types
547
class session_int(ctypes.Structure):
548
_fields_ = []
549
session_t = ctypes.POINTER(session_int)
550
551
class certificate_credentials_st(ctypes.Structure):
552
_fields_ = []
553
certificate_credentials_t = ctypes.POINTER(
554
certificate_credentials_st)
555
certificate_type_t = ctypes.c_int
556
557
class datum_t(ctypes.Structure):
558
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
559
('size', ctypes.c_uint)]
560
561
class openpgp_crt_int(ctypes.Structure):
562
_fields_ = []
563
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
564
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
565
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
566
credentials_type_t = ctypes.c_int
567
transport_ptr_t = ctypes.c_void_p
568
close_request_t = ctypes.c_int
569
570
# Exceptions
571
class Error(Exception):
572
# We need to use the class name "GnuTLS" here, since this
573
# exception might be raised from within GnuTLS.__init__,
574
# which is called before the assignment to the "gnutls"
575
# global variable has happened.
576
def __init__(self, message=None, code=None, args=()):
577
# Default usage is by a message string, but if a return
578
# code is passed, convert it to a string with
579
# gnutls.strerror()
580
self.code = code
581
if message is None and code is not None:
582
message = GnuTLS.strerror(code)
583
return super(GnuTLS.Error, self).__init__(
584
message, *args)
585
586
class CertificateSecurityError(Error):
587
pass
588
589
# Classes
590
class Credentials(object):
591
def __init__(self):
592
self._c_object = gnutls.certificate_credentials_t()
593
gnutls.certificate_allocate_credentials(
594
ctypes.byref(self._c_object))
595
self.type = gnutls.CRD_CERTIFICATE
596
597
def __del__(self):
598
gnutls.certificate_free_credentials(self._c_object)
599
600
class ClientSession(object):
601
def __init__(self, socket, credentials=None):
602
self._c_object = gnutls.session_t()
603
gnutls_flags = gnutls.CLIENT
604
if gnutls.check_version("3.5.6"):
605
gnutls_flags |= gnutls.NO_TICKETS
606
if gnutls.has_rawpk:
607
gnutls_flags |= gnutls.ENABLE_RAWPK
608
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
609
del gnutls_flags
610
gnutls.set_default_priority(self._c_object)
611
gnutls.transport_set_ptr(self._c_object, socket.fileno())
612
gnutls.handshake_set_private_extensions(self._c_object,
613
True)
614
self.socket = socket
615
if credentials is None:
616
credentials = gnutls.Credentials()
617
gnutls.credentials_set(self._c_object, credentials.type,
618
ctypes.cast(credentials._c_object,
619
ctypes.c_void_p))
620
self.credentials = credentials
621
622
def __del__(self):
623
gnutls.deinit(self._c_object)
624
625
def handshake(self):
626
return gnutls.handshake(self._c_object)
627
628
def send(self, data):
629
data = bytes(data)
630
data_len = len(data)
631
while data_len > 0:
632
data_len -= gnutls.record_send(self._c_object,
633
data[-data_len:],
634
data_len)
635
636
def bye(self):
637
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
638
639
# Error handling functions
640
def _error_code(result):
641
"""A function to raise exceptions on errors, suitable
642
for the 'restype' attribute on ctypes functions"""
643
if result >= 0:
644
return result
645
if result == gnutls.E_NO_CERTIFICATE_FOUND:
646
raise gnutls.CertificateSecurityError(code=result)
647
raise gnutls.Error(code=result)
648
649
def _retry_on_error(result, func, arguments):
650
"""A function to retry on some errors, suitable
651
for the 'errcheck' attribute on ctypes functions"""
652
while result < 0:
653
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
654
return _error_code(result)
655
result = func(*arguments)
656
return result
657
658
# Unless otherwise indicated, the function declarations below are
659
# all from the gnutls/gnutls.h C header file.
660
661
# Functions
662
priority_set_direct = _library.gnutls_priority_set_direct
663
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
664
ctypes.POINTER(ctypes.c_char_p)]
665
priority_set_direct.restype = _error_code
666
667
init = _library.gnutls_init
668
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
669
init.restype = _error_code
670
671
set_default_priority = _library.gnutls_set_default_priority
672
set_default_priority.argtypes = [session_t]
673
set_default_priority.restype = _error_code
674
675
record_send = _library.gnutls_record_send
676
record_send.argtypes = [session_t, ctypes.c_void_p,
677
ctypes.c_size_t]
678
record_send.restype = ctypes.c_ssize_t
679
record_send.errcheck = _retry_on_error
680
681
certificate_allocate_credentials = (
682
_library.gnutls_certificate_allocate_credentials)
683
certificate_allocate_credentials.argtypes = [
684
ctypes.POINTER(certificate_credentials_t)]
685
certificate_allocate_credentials.restype = _error_code
686
687
certificate_free_credentials = (
688
_library.gnutls_certificate_free_credentials)
689
certificate_free_credentials.argtypes = [
690
certificate_credentials_t]
691
certificate_free_credentials.restype = None
692
693
handshake_set_private_extensions = (
694
_library.gnutls_handshake_set_private_extensions)
695
handshake_set_private_extensions.argtypes = [session_t,
696
ctypes.c_int]
697
handshake_set_private_extensions.restype = None
698
699
credentials_set = _library.gnutls_credentials_set
700
credentials_set.argtypes = [session_t, credentials_type_t,
701
ctypes.c_void_p]
702
credentials_set.restype = _error_code
703
704
strerror = _library.gnutls_strerror
705
strerror.argtypes = [ctypes.c_int]
706
strerror.restype = ctypes.c_char_p
707
708
certificate_type_get = _library.gnutls_certificate_type_get
709
certificate_type_get.argtypes = [session_t]
710
certificate_type_get.restype = _error_code
711
712
certificate_get_peers = _library.gnutls_certificate_get_peers
713
certificate_get_peers.argtypes = [session_t,
714
ctypes.POINTER(ctypes.c_uint)]
715
certificate_get_peers.restype = ctypes.POINTER(datum_t)
716
717
global_set_log_level = _library.gnutls_global_set_log_level
718
global_set_log_level.argtypes = [ctypes.c_int]
719
global_set_log_level.restype = None
720
721
global_set_log_function = _library.gnutls_global_set_log_function
722
global_set_log_function.argtypes = [log_func]
723
global_set_log_function.restype = None
724
725
deinit = _library.gnutls_deinit
726
deinit.argtypes = [session_t]
727
deinit.restype = None
728
729
handshake = _library.gnutls_handshake
730
handshake.argtypes = [session_t]
731
handshake.restype = _error_code
732
handshake.errcheck = _retry_on_error
733
734
transport_set_ptr = _library.gnutls_transport_set_ptr
735
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
736
transport_set_ptr.restype = None
737
738
bye = _library.gnutls_bye
739
bye.argtypes = [session_t, close_request_t]
740
bye.restype = _error_code
741
bye.errcheck = _retry_on_error
742
743
check_version = _library.gnutls_check_version
744
check_version.argtypes = [ctypes.c_char_p]
745
check_version.restype = ctypes.c_char_p
746
747
has_rawpk = bool(check_version(_tls_rawpk_version))
748
749
if has_rawpk:
750
# Types
751
class pubkey_st(ctypes.Structure):
752
_fields = []
753
pubkey_t = ctypes.POINTER(pubkey_st)
754
755
x509_crt_fmt_t = ctypes.c_int
756
757
# All the function declarations below are from gnutls/abstract.h
758
pubkey_init = _library.gnutls_pubkey_init
759
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
760
pubkey_init.restype = _error_code
761
762
pubkey_import = _library.gnutls_pubkey_import
763
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
764
x509_crt_fmt_t]
765
pubkey_import.restype = _error_code
766
767
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
768
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
769
ctypes.POINTER(ctypes.c_ubyte),
770
ctypes.POINTER(ctypes.c_size_t)]
771
pubkey_get_key_id.restype = _error_code
772
773
pubkey_deinit = _library.gnutls_pubkey_deinit
774
pubkey_deinit.argtypes = [pubkey_t]
775
pubkey_deinit.restype = None
776
else:
777
# All the function declarations below are from gnutls/openpgp.h
778
779
openpgp_crt_init = _library.gnutls_openpgp_crt_init
780
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
781
openpgp_crt_init.restype = _error_code
782
783
openpgp_crt_import = _library.gnutls_openpgp_crt_import
784
openpgp_crt_import.argtypes = [openpgp_crt_t,
785
ctypes.POINTER(datum_t),
786
openpgp_crt_fmt_t]
787
openpgp_crt_import.restype = _error_code
788
789
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
790
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
791
ctypes.POINTER(ctypes.c_uint)]
792
openpgp_crt_verify_self.restype = _error_code
793
794
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
795
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
796
openpgp_crt_deinit.restype = None
797
798
openpgp_crt_get_fingerprint = (
799
_library.gnutls_openpgp_crt_get_fingerprint)
800
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
801
ctypes.c_void_p,
802
ctypes.POINTER(
803
ctypes.c_size_t)]
804
openpgp_crt_get_fingerprint.restype = _error_code
805
806
if check_version("3.6.4"):
807
certificate_type_get2 = _library.gnutls_certificate_type_get2
808
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
809
certificate_type_get2.restype = _error_code
810
811
# Remove non-public functions
812
del _error_code, _retry_on_error
813
# Create the global "gnutls" object, simulating a module
814
gnutls = GnuTLS()
815
816
817
def call_pipe(connection, # : multiprocessing.Connection
818
func, *args, **kwargs):
819
"""This function is meant to be called by multiprocessing.Process
820
821
This function runs func(*args, **kwargs), and writes the resulting
822
return value on the provided multiprocessing.Connection.
823
"""
824
connection.send(func(*args, **kwargs))
825
connection.close()
826
827
239
828
class Client(object):
240
829
"""A representation of a client host served by this server.
241
830
242
831
Attributes:
243
_approved: bool(); 'None' if not yet approved/disapproved
832
approved: bool(); 'None' if not yet approved/disapproved
244
833
approval_delay: datetime.timedelta(); Time to wait for approval
245
834
approval_duration: datetime.timedelta(); Duration of one approval
246
835
checker: subprocess.Popen(); a running checker process used
247
836
to see if the client lives.
248
837
'None' if no process is running.
249
checker_callback_tag: - '' -
838
checker_callback_tag: a GLib event source tag, or None
250
839
checker_command: string; External command which is run to check
251
840
if client lives. %() expansions are done at
252
841
runtime with vars(self) as dict, so that for
253
842
instance %(name)s can be used in the command.
254
checker_initiator_tag: a gobject event source tag, or None
843
checker_initiator_tag: a GLib event source tag, or None
255
844
created: datetime.datetime(); (UTC) object creation
845
client_structure: Object describing what attributes a client has
846
and is used for storing the client at exit
256
847
current_checker_command: string; current running checker_command
257
disable_hook: If set, called by disable() as disable_hook(self)
258
disable_initiator_tag: - '' -
848
disable_initiator_tag: a GLib event source tag, or None
259
849
enabled: bool()
260
850
fingerprint: string (40 or 32 hexadecimal digits); used to
261
uniquely identify the client
851
uniquely identify an OpenPGP client
852
key_id: string (64 hexadecimal digits); used to uniquely identify
853
a client using raw public keys
262
854
host: string; available for use by the checker command
263
855
interval: datetime.timedelta(); How often to start a new checker
856
last_approval_request: datetime.datetime(); (UTC) or None
264
857
last_checked_ok: datetime.datetime(); (UTC) or None
265
last_enabled: datetime.datetime(); (UTC)
858
last_checker_status: integer between 0 and 255 reflecting exit
859
status of last checker. -1 reflects crashed
860
checker, -2 means no checker completed yet.
861
last_checker_signal: The signal which killed the last checker, if
862
last_checker_status is -1
863
last_enabled: datetime.datetime(); (UTC) or None
266
864
name: string; from the config file, used in log messages and
267
865
D-Bus identifiers
268
866
secret: bytestring; sent verbatim (over TLS) to client
269
867
timeout: datetime.timedelta(); How long from last_checked_ok
270
868
until this client is disabled
869
extended_timeout: extra long timeout when secret has been sent
271
870
runtime_expansions: Allowed attributes for runtime expansion.
871
expires: datetime.datetime(); time (UTC) when a client will be
872
disabled, or None
873
server_settings: The server_settings dict from main()
272
874
"""
273
274
runtime_expansions = (u"approval_delay", u"approval_duration",
275
u"created", u"enabled", u"fingerprint",
276
u"host", u"interval", u"last_checked_ok",
277
u"last_enabled", u"name", u"timeout")
278
875
876
runtime_expansions = ("approval_delay", "approval_duration",
877
"created", "enabled", "expires", "key_id",
878
"fingerprint", "host", "interval",
879
"last_approval_request", "last_checked_ok",
880
"last_enabled", "name", "timeout")
881
client_defaults = {
882
"timeout": "PT5M",
883
"extended_timeout": "PT15M",
884
"interval": "PT2M",
885
"checker": "fping -q -- %%(host)s",
886
"host": "",
887
"approval_delay": "PT0S",
888
"approval_duration": "PT1S",
889
"approved_by_default": "True",
890
"enabled": "True",
891
}
892
279
893
@staticmethod
280
def _timedelta_to_milliseconds(td):
281
"Convert a datetime.timedelta() to milliseconds"
282
return ((td.days * 24 * 60 * 60 * 1000)
283
+ (td.seconds * 1000)
284
+ (td.microseconds // 1000))
285
286
def timeout_milliseconds(self):
287
"Return the 'timeout' attribute in milliseconds"
288
return self._timedelta_to_milliseconds(self.timeout)
289
290
def interval_milliseconds(self):
291
"Return the 'interval' attribute in milliseconds"
292
return self._timedelta_to_milliseconds(self.interval)
293
294
def approval_delay_milliseconds(self):
295
return self._timedelta_to_milliseconds(self.approval_delay)
296
297
def __init__(self, name = None, disable_hook=None, config=None):
298
"""Note: the 'checker' key in 'config' sets the
299
'checker_command' attribute and *not* the 'checker'
300
attribute."""
894
def config_parser(config):
895
"""Construct a new dict of client settings of this form:
896
{ client_name: {setting_name: value, ...}, ...}
897
with exceptions for any special settings as defined above.
898
NOTE: Must be a pure function. Must return the same result
899
value given the same arguments.
900
"""
901
settings = {}
902
for client_name in config.sections():
903
section = dict(config.items(client_name))
904
client = settings[client_name] = {}
905
906
client["host"] = section["host"]
907
# Reformat values from string types to Python types
908
client["approved_by_default"] = config.getboolean(
909
client_name, "approved_by_default")
910
client["enabled"] = config.getboolean(client_name,
911
"enabled")
912
913
# Uppercase and remove spaces from key_id and fingerprint
914
# for later comparison purposes with return value from the
915
# key_id() and fingerprint() functions
916
client["key_id"] = (section.get("key_id", "").upper()
917
.replace(" ", ""))
918
client["fingerprint"] = (section["fingerprint"].upper()
919
.replace(" ", ""))
920
if "secret" in section:
921
client["secret"] = codecs.decode(section["secret"]
922
.encode("utf-8"),
923
"base64")
924
elif "secfile" in section:
925
with open(os.path.expanduser(os.path.expandvars
926
(section["secfile"])),
927
"rb") as secfile:
928
client["secret"] = secfile.read()
929
else:
930
raise TypeError("No secret or secfile for section {}"
931
.format(section))
932
client["timeout"] = string_to_delta(section["timeout"])
933
client["extended_timeout"] = string_to_delta(
934
section["extended_timeout"])
935
client["interval"] = string_to_delta(section["interval"])
936
client["approval_delay"] = string_to_delta(
937
section["approval_delay"])
938
client["approval_duration"] = string_to_delta(
939
section["approval_duration"])
940
client["checker_command"] = section["checker"]
941
client["last_approval_request"] = None
942
client["last_checked_ok"] = None
943
client["last_checker_status"] = -2
944
945
return settings
946
947
def __init__(self, settings, name=None, server_settings=None):
301
948
self.name = name
302
if config is None:
303
config = {}
304
logger.debug(u"Creating client %r", self.name)
305
# Uppercase and remove spaces from fingerprint for later
306
# comparison purposes with return value from the fingerprint()
307
# function
308
self.fingerprint = (config[u"fingerprint"].upper()
309
.replace(u" ", u""))
310
logger.debug(u" Fingerprint: %s", self.fingerprint)
311
if u"secret" in config:
312
self.secret = config[u"secret"].decode(u"base64")
313
elif u"secfile" in config:
314
with open(os.path.expanduser(os.path.expandvars
315
(config[u"secfile"])),
316
"rb") as secfile:
317
self.secret = secfile.read()
949
if server_settings is None:
950
server_settings = {}
951
self.server_settings = server_settings
952
# adding all client settings
953
for setting, value in settings.items():
954
setattr(self, setting, value)
955
956
if self.enabled:
957
if not hasattr(self, "last_enabled"):
958
self.last_enabled = datetime.datetime.utcnow()
959
if not hasattr(self, "expires"):
960
self.expires = (datetime.datetime.utcnow()
961
+ self.timeout)
318
962
else:
319
raise TypeError(u"No secret or secfile for client %s"
320
% self.name)
321
self.host = config.get(u"host", u"")
322
self.created = datetime.datetime.utcnow()
323
self.enabled = False
324
self.last_enabled = None
325
self.last_checked_ok = None
326
self.timeout = string_to_delta(config[u"timeout"])
327
self.interval = string_to_delta(config[u"interval"])
328
self.disable_hook = disable_hook
963
self.last_enabled = None
964
self.expires = None
965
966
logger.debug("Creating client %r", self.name)
967
logger.debug(" Key ID: %s", self.key_id)
968
logger.debug(" Fingerprint: %s", self.fingerprint)
969
self.created = settings.get("created",
970
datetime.datetime.utcnow())
971
972
# attributes specific for this server instance
329
973
self.checker = None
330
974
self.checker_initiator_tag = None
331
975
self.disable_initiator_tag = None
332
976
self.checker_callback_tag = None
333
self.checker_command = config[u"checker"]
334
977
self.current_checker_command = None
335
self.last_connect = None
336
self._approved = None
337
self.approved_by_default = config.get(u"approved_by_default",
338
True)
978
self.approved = None
339
979
self.approvals_pending = 0
340
self.approval_delay = string_to_delta(
341
config[u"approval_delay"])
342
self.approval_duration = string_to_delta(
343
config[u"approval_duration"])
344
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
345
980
self.changedstate = multiprocessing_manager.Condition(
981
multiprocessing_manager.Lock())
982
self.client_structure = [attr
983
for attr in self.__dict__.keys()
984
if not attr.startswith("_")]
985
self.client_structure.append("client_structure")
986
987
for name, t in inspect.getmembers(
988
type(self), lambda obj: isinstance(obj, property)):
989
if not name.startswith("_"):
990
self.client_structure.append(name)
991
992
# Send notice to process children that client state has changed
346
993
def send_changedstate(self):
347
self.changedstate.acquire()
348
self.changedstate.notify_all()
349
self.changedstate.release()
350
994
with self.changedstate:
995
self.changedstate.notify_all()
996
351
997
def enable(self):
352
998
"""Start this client's checker and timeout hooks"""
353
if getattr(self, u"enabled", False):
999
if getattr(self, "enabled", False):
354
1000
# Already enabled
355
1001
return
356
self.send_changedstate()
1002
self.expires = datetime.datetime.utcnow() + self.timeout
1003
self.enabled = True
357
1004
self.last_enabled = datetime.datetime.utcnow()
1005
self.init_checker()
1006
self.send_changedstate()
1007
1008
def disable(self, quiet=True):
1009
"""Disable this client."""
1010
if not getattr(self, "enabled", False):
1011
return False
1012
if not quiet:
1013
logger.info("Disabling client %s", self.name)
1014
if getattr(self, "disable_initiator_tag", None) is not None:
1015
GLib.source_remove(self.disable_initiator_tag)
1016
self.disable_initiator_tag = None
1017
self.expires = None
1018
if getattr(self, "checker_initiator_tag", None) is not None:
1019
GLib.source_remove(self.checker_initiator_tag)
1020
self.checker_initiator_tag = None
1021
self.stop_checker()
1022
self.enabled = False
1023
if not quiet:
1024
self.send_changedstate()
1025
# Do not run this again if called by a GLib.timeout_add
1026
return False
1027
1028
def __del__(self):
1029
self.disable()
1030
1031
def init_checker(self):
358
1032
# Schedule a new checker to be started an 'interval' from now,
359
1033
# and every interval from then on.
360
self.checker_initiator_tag = (gobject.timeout_add
361
(self.interval_milliseconds(),
362
self.start_checker))
1034
if self.checker_initiator_tag is not None:
1035
GLib.source_remove(self.checker_initiator_tag)
1036
self.checker_initiator_tag = GLib.timeout_add(
1037
int(self.interval.total_seconds() * 1000),
1038
self.start_checker)
363
1039
# Schedule a disable() when 'timeout' has passed
364
self.disable_initiator_tag = (gobject.timeout_add
365
(self.timeout_milliseconds(),
366
self.disable))
367
self.enabled = True
1040
if self.disable_initiator_tag is not None:
1041
GLib.source_remove(self.disable_initiator_tag)
1042
self.disable_initiator_tag = GLib.timeout_add(
1043
int(self.timeout.total_seconds() * 1000), self.disable)
368
1044
# Also start a new checker *right now*.
369
1045
self.start_checker()
370
371
def disable(self, quiet=True):
372
"""Disable this client."""
373
if not getattr(self, "enabled", False):
374
return False
375
if not quiet:
376
self.send_changedstate()
377
if not quiet:
378
logger.info(u"Disabling client %s", self.name)
379
if getattr(self, u"disable_initiator_tag", False):
380
gobject.source_remove(self.disable_initiator_tag)
381
self.disable_initiator_tag = None
382
if getattr(self, u"checker_initiator_tag", False):
383
gobject.source_remove(self.checker_initiator_tag)
384
self.checker_initiator_tag = None
385
self.stop_checker()
386
if self.disable_hook:
387
self.disable_hook(self)
388
self.enabled = False
389
# Do not run this again if called by a gobject.timeout_add
390
return False
391
392
def __del__(self):
393
self.disable_hook = None
394
self.disable()
395
396
def checker_callback(self, pid, condition, command):
1046
1047
def checker_callback(self, source, condition, connection,
1048
command):
397
1049
"""The checker has completed, so take appropriate actions."""
398
1050
self.checker_callback_tag = None
399
1051
self.checker = None
400
if os.WIFEXITED(condition):
401
exitstatus = os.WEXITSTATUS(condition)
402
if exitstatus == 0:
403
logger.info(u"Checker for %(name)s succeeded",
1052
# Read return code from connection (see call_pipe)
1053
returncode = connection.recv()
1054
connection.close()
1055
1056
if returncode >= 0:
1057
self.last_checker_status = returncode
1058
self.last_checker_signal = None
1059
if self.last_checker_status == 0:
1060
logger.info("Checker for %(name)s succeeded",
404
1061
vars(self))
405
1062
self.checked_ok()
406
1063
else:
407
logger.info(u"Checker for %(name)s failed",
408
vars(self))
1064
logger.info("Checker for %(name)s failed", vars(self))
409
1065
else:
410
logger.warning(u"Checker for %(name)s crashed?",
1066
self.last_checker_status = -1
1067
self.last_checker_signal = -returncode
1068
logger.warning("Checker for %(name)s crashed?",
411
1069
vars(self))
412
1070
return False
1071
413
1072
def checked_ok(self):
414
"""Bump up the timeout for this client.
415
416
This should only be called when the client has been seen,
417
alive and well.
418
"""
1073
"""Assert that the client has been seen, alive and well."""
419
1074
self.last_checked_ok = datetime.datetime.utcnow()
420
gobject.source_remove(self.disable_initiator_tag)
421
self.disable_initiator_tag = (gobject.timeout_add
422
(self.timeout_milliseconds(),
423
self.disable))
424
1075
self.last_checker_status = 0
1076
self.last_checker_signal = None
1077
self.bump_timeout()
1078
1079
def bump_timeout(self, timeout=None):
1080
"""Bump up the timeout for this client."""
1081
if timeout is None:
1082
timeout = self.timeout
1083
if self.disable_initiator_tag is not None:
1084
GLib.source_remove(self.disable_initiator_tag)
1085
self.disable_initiator_tag = None
1086
if getattr(self, "enabled", False):
1087
self.disable_initiator_tag = GLib.timeout_add(
1088
int(timeout.total_seconds() * 1000), self.disable)
1089
self.expires = datetime.datetime.utcnow() + timeout
1090
1091
def need_approval(self):
1092
self.last_approval_request = datetime.datetime.utcnow()
1093
425
1094
def start_checker(self):
426
1095
"""Start a new checker subprocess if one is not running.
427
1096
428
1097
If a checker already exists, leave it running and do
429
1098
nothing."""
430
1099
# The reason for not killing a running checker is that if we
431
# did that, then if a checker (for some reason) started
432
# running slowly and taking more than 'interval' time, the
433
# client would inevitably timeout, since no checker would get
434
# a chance to run to completion. If we instead leave running
1100
# did that, and if a checker (for some reason) started running
1101
# slowly and taking more than 'interval' time, then the client
1102
# would inevitably timeout, since no checker would get a
1103
# chance to run to completion. If we instead leave running
435
1104
# checkers alone, the checker would have to take more time
436
1105
# than 'timeout' for the client to be disabled, which is as it
437
1106
# should be.
438
439
# If a checker exists, make sure it is not a zombie
440
try:
441
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
442
except (AttributeError, OSError), error:
443
if (isinstance(error, OSError)
444
and error.errno != errno.ECHILD):
445
raise error
446
else:
447
if pid:
448
logger.warning(u"Checker was a zombie")
449
gobject.source_remove(self.checker_callback_tag)
450
self.checker_callback(pid, status,
451
self.current_checker_command)
1107
1108
if self.checker is not None and not self.checker.is_alive():
1109
logger.warning("Checker was not alive; joining")
1110
self.checker.join()
1111
self.checker = None
452
1112
# Start a new checker if needed
453
1113
if self.checker is None:
1114
# Escape attributes for the shell
1115
escaped_attrs = {
1116
attr: re.escape(str(getattr(self, attr)))
1117
for attr in self.runtime_expansions}
454
1118
try:
455
# In case checker_command has exactly one % operator
456
command = self.checker_command % self.host
457
except TypeError:
458
# Escape attributes for the shell
459
escaped_attrs = dict(
460
(attr,
461
re.escape(unicode(str(getattr(self, attr, u"")),
462
errors=
463
u'replace')))
464
for attr in
465
self.runtime_expansions)
466
467
try:
468
command = self.checker_command % escaped_attrs
469
except TypeError, error:
470
logger.error(u'Could not format string "%s":'
471
u' %s', self.checker_command, error)
472
return True # Try again later
1119
command = self.checker_command % escaped_attrs
1120
except TypeError as error:
1121
logger.error('Could not format string "%s"',
1122
self.checker_command,
1123
exc_info=error)
1124
return True # Try again later
473
1125
self.current_checker_command = command
474
try:
475
logger.info(u"Starting checker %r for %s",
476
command, self.name)
477
# We don't need to redirect stdout and stderr, since
478
# in normal mode, that is already done by daemon(),
479
# and in debug mode we don't want to. (Stdin is
480
# always replaced by /dev/null.)
481
self.checker = subprocess.Popen(command,
482
close_fds=True,
483
shell=True, cwd=u"/")
484
self.checker_callback_tag = (gobject.child_watch_add
485
(self.checker.pid,
486
self.checker_callback,
487
data=command))
488
# The checker may have completed before the gobject
489
# watch was added. Check for this.
490
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
491
if pid:
492
gobject.source_remove(self.checker_callback_tag)
493
self.checker_callback(pid, status, command)
494
except OSError, error:
495
logger.error(u"Failed to start subprocess: %s",
496
error)
497
# Re-run this periodically if run by gobject.timeout_add
1126
logger.info("Starting checker %r for %s", command,
1127
self.name)
1128
# We don't need to redirect stdout and stderr, since
1129
# in normal mode, that is already done by daemon(),
1130
# and in debug mode we don't want to. (Stdin is
1131
# always replaced by /dev/null.)
1132
# The exception is when not debugging but nevertheless
1133
# running in the foreground; use the previously
1134
# created wnull.
1135
popen_args = {"close_fds": True,
1136
"shell": True,
1137
"cwd": "/"}
1138
if (not self.server_settings["debug"]
1139
and self.server_settings["foreground"]):
1140
popen_args.update({"stdout": wnull,
1141
"stderr": wnull})
1142
pipe = multiprocessing.Pipe(duplex=False)
1143
self.checker = multiprocessing.Process(
1144
target=call_pipe,
1145
args=(pipe[1], subprocess.call, command),
1146
kwargs=popen_args)
1147
self.checker.start()
1148
self.checker_callback_tag = GLib.io_add_watch(
1149
pipe[0].fileno(), GLib.IO_IN,
1150
self.checker_callback, pipe[0], command)
1151
# Re-run this periodically if run by GLib.timeout_add
498
1152
return True
499
1153
500
1154
def stop_checker(self):
501
1155
"""Force the checker process, if any, to stop."""
502
1156
if self.checker_callback_tag:
503
gobject.source_remove(self.checker_callback_tag)
1157
GLib.source_remove(self.checker_callback_tag)
504
1158
self.checker_callback_tag = None
505
if getattr(self, u"checker", None) is None:
1159
if getattr(self, "checker", None) is None:
506
1160
return
507
logger.debug(u"Stopping checker for %(name)s", vars(self))
508
try:
509
os.kill(self.checker.pid, signal.SIGTERM)
510
#time.sleep(0.5)
511
#if self.checker.poll() is None:
512
# os.kill(self.checker.pid, signal.SIGKILL)
513
except OSError, error:
514
if error.errno != errno.ESRCH: # No such process
515
raise
1161
logger.debug("Stopping checker for %(name)s", vars(self))
1162
self.checker.terminate()
516
1163
self.checker = None
517
1164
518
def dbus_service_property(dbus_interface, signature=u"v",
519
access=u"readwrite", byte_arrays=False):
1165
1166
def dbus_service_property(dbus_interface,
1167
signature="v",
1168
access="readwrite",
1169
byte_arrays=False):
520
1170
"""Decorators for marking methods of a DBusObjectWithProperties to
521
1171
become properties on the D-Bus.
522
1172
523
1173
The decorated method will be called with no arguments by "Get"
524
1174
and with one argument by "Set".
525
1175
526
1176
The parameters, where they are supported, are the same as
527
1177
dbus.service.method, except there is only "signature", since the
528
1178
type from Get() and the type sent to Set() is the same.
529
1179
"""
530
1180
# Encoding deeply encoded byte arrays is not supported yet by the
531
1181
# "Set" method, so we fail early here:
532
if byte_arrays and signature != u"ay":
533
raise ValueError(u"Byte arrays not supported for non-'ay'"
534
u" signature %r" % signature)
1182
if byte_arrays and signature != "ay":
1183
raise ValueError("Byte arrays not supported for non-'ay'"
1184
" signature {!r}".format(signature))
1185
535
1186
def decorator(func):
536
1187
func._dbus_is_property = True
537
1188
func._dbus_interface = dbus_interface
538
1189
func._dbus_signature = signature
539
1190
func._dbus_access = access
540
1191
func._dbus_name = func.__name__
541
if func._dbus_name.endswith(u"_dbus_property"):
1192
if func._dbus_name.endswith("_dbus_property"):
542
1193
func._dbus_name = func._dbus_name[:-14]
543
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
544
return func
1194
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
1195
return func
1196
1197
return decorator
1198
1199
1200
def dbus_interface_annotations(dbus_interface):
1201
"""Decorator for marking functions returning interface annotations
1202
1203
Usage:
1204
1205
@dbus_interface_annotations("org.example.Interface")
1206
def _foo(self): # Function name does not matter
1207
return {"org.freedesktop.DBus.Deprecated": "true",
1208
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1209
"false"}
1210
"""
1211
1212
def decorator(func):
1213
func._dbus_is_interface = True
1214
func._dbus_interface = dbus_interface
1215
func._dbus_name = dbus_interface
1216
return func
1217
1218
return decorator
1219
1220
1221
def dbus_annotations(annotations):
1222
"""Decorator to annotate D-Bus methods, signals or properties
1223
Usage:
1224
1225
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1226
"org.freedesktop.DBus.Property."
1227
"EmitsChangedSignal": "false"})
1228
@dbus_service_property("org.example.Interface", signature="b",
1229
access="r")
1230
def Property_dbus_property(self):
1231
return dbus.Boolean(False)
1232
1233
See also the DBusObjectWithAnnotations class.
1234
"""
1235
1236
def decorator(func):
1237
func._dbus_annotations = annotations
1238
return func
1239
545
1240
return decorator
546
1241
547
1242
548
1243
class DBusPropertyException(dbus.exceptions.DBusException):
549
1244
"""A base class for D-Bus property-related exceptions
550
1245
"""
551
def __unicode__(self):
552
return unicode(str(self))
1246
pass
553
1247
554
1248
555
1249
class DBusPropertyAccessException(DBusPropertyException):
564
1258
pass
565
1259
566
1260
567
class DBusObjectWithProperties(dbus.service.Object):
1261
class DBusObjectWithAnnotations(dbus.service.Object):
1262
"""A D-Bus object with annotations.
1263
1264
Classes inheriting from this can use the dbus_annotations
1265
decorator to add annotations to methods or signals.
1266
"""
1267
1268
@staticmethod
1269
def _is_dbus_thing(thing):
1270
"""Returns a function testing if an attribute is a D-Bus thing
1271
1272
If called like _is_dbus_thing("method") it returns a function
1273
suitable for use as predicate to inspect.getmembers().
1274
"""
1275
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1276
False)
1277
1278
def _get_all_dbus_things(self, thing):
1279
"""Returns a generator of (name, attribute) pairs
1280
"""
1281
return ((getattr(athing.__get__(self), "_dbus_name", name),
1282
athing.__get__(self))
1283
for cls in self.__class__.__mro__
1284
for name, athing in
1285
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1286
1287
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1288
out_signature="s",
1289
path_keyword='object_path',
1290
connection_keyword='connection')
1291
def Introspect(self, object_path, connection):
1292
"""Overloading of standard D-Bus method.
1293
1294
Inserts annotation tags on methods and signals.
1295
"""
1296
xmlstring = dbus.service.Object.Introspect(self, object_path,
1297
connection)
1298
try:
1299
document = xml.dom.minidom.parseString(xmlstring)
1300
1301
for if_tag in document.getElementsByTagName("interface"):
1302
# Add annotation tags
1303
for typ in ("method", "signal"):
1304
for tag in if_tag.getElementsByTagName(typ):
1305
annots = dict()
1306
for name, prop in (self.
1307
_get_all_dbus_things(typ)):
1308
if (name == tag.getAttribute("name")
1309
and prop._dbus_interface
1310
== if_tag.getAttribute("name")):
1311
annots.update(getattr(
1312
prop, "_dbus_annotations", {}))
1313
for name, value in annots.items():
1314
ann_tag = document.createElement(
1315
"annotation")
1316
ann_tag.setAttribute("name", name)
1317
ann_tag.setAttribute("value", value)
1318
tag.appendChild(ann_tag)
1319
# Add interface annotation tags
1320
for annotation, value in dict(
1321
itertools.chain.from_iterable(
1322
annotations().items()
1323
for name, annotations
1324
in self._get_all_dbus_things("interface")
1325
if name == if_tag.getAttribute("name")
1326
)).items():
1327
ann_tag = document.createElement("annotation")
1328
ann_tag.setAttribute("name", annotation)
1329
ann_tag.setAttribute("value", value)
1330
if_tag.appendChild(ann_tag)
1331
# Fix argument name for the Introspect method itself
1332
if (if_tag.getAttribute("name")
1333
== dbus.INTROSPECTABLE_IFACE):
1334
for cn in if_tag.getElementsByTagName("method"):
1335
if cn.getAttribute("name") == "Introspect":
1336
for arg in cn.getElementsByTagName("arg"):
1337
if (arg.getAttribute("direction")
1338
== "out"):
1339
arg.setAttribute("name",
1340
"xml_data")
1341
xmlstring = document.toxml("utf-8")
1342
document.unlink()
1343
except (AttributeError, xml.dom.DOMException,
1344
xml.parsers.expat.ExpatError) as error:
1345
logger.error("Failed to override Introspection method",
1346
exc_info=error)
1347
return xmlstring
1348
1349
1350
class DBusObjectWithProperties(DBusObjectWithAnnotations):
568
1351
"""A D-Bus object with properties.
569
1352
570
1353
Classes inheriting from this can use the dbus_service_property
571
1354
decorator to expose methods as D-Bus properties. It exposes the
572
1355
standard Get(), Set(), and GetAll() methods on the D-Bus.
573
1356
"""
574
575
@staticmethod
576
def _is_dbus_property(obj):
577
return getattr(obj, u"_dbus_is_property", False)
578
579
def _get_all_dbus_properties(self):
580
"""Returns a generator of (name, attribute) pairs
581
"""
582
return ((prop._dbus_name, prop)
583
for name, prop in
584
inspect.getmembers(self, self._is_dbus_property))
585
1357
586
1358
def _get_dbus_property(self, interface_name, property_name):
587
1359
"""Returns a bound method if one exists which is a D-Bus
588
1360
property with the specified name and interface.
589
1361
"""
590
for name in (property_name,
591
property_name + u"_dbus_property"):
592
prop = getattr(self, name, None)
593
if (prop is None
594
or not self._is_dbus_property(prop)
595
or prop._dbus_name != property_name
596
or (interface_name and prop._dbus_interface
597
and interface_name != prop._dbus_interface)):
598
continue
599
return prop
1362
for cls in self.__class__.__mro__:
1363
for name, value in inspect.getmembers(
1364
cls, self._is_dbus_thing("property")):
1365
if (value._dbus_name == property_name
1366
and value._dbus_interface == interface_name):
1367
return value.__get__(self)
1368
600
1369
# No such property
601
raise DBusPropertyNotFound(self.dbus_object_path + u":"
602
+ interface_name + u"."
603
+ property_name)
604
605
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
606
out_signature=u"v")
1370
raise DBusPropertyNotFound("{}:{}.{}".format(
1371
self.dbus_object_path, interface_name, property_name))
1372
1373
@classmethod
1374
def _get_all_interface_names(cls):
1375
"""Get a sequence of all interfaces supported by an object"""
1376
return (name for name in set(getattr(getattr(x, attr),
1377
"_dbus_interface", None)
1378
for x in (inspect.getmro(cls))
1379
for attr in dir(x))
1380
if name is not None)
1381
1382
@dbus.service.method(dbus.PROPERTIES_IFACE,
1383
in_signature="ss",
1384
out_signature="v")
607
1385
def Get(self, interface_name, property_name):
608
1386
"""Standard D-Bus property Get() method, see D-Bus standard.
609
1387
"""
610
1388
prop = self._get_dbus_property(interface_name, property_name)
611
if prop._dbus_access == u"write":
1389
if prop._dbus_access == "write":
612
1390
raise DBusPropertyAccessException(property_name)
613
1391
value = prop()
614
if not hasattr(value, u"variant_level"):
1392
if not hasattr(value, "variant_level"):
615
1393
return value
616
1394
return type(value)(value, variant_level=value.variant_level+1)
617
618
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
1395
1396
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
619
1397
def Set(self, interface_name, property_name, value):
620
1398
"""Standard D-Bus property Set() method, see D-Bus standard.
621
1399
"""
622
1400
prop = self._get_dbus_property(interface_name, property_name)
623
if prop._dbus_access == u"read":
1401
if prop._dbus_access == "read":
624
1402
raise DBusPropertyAccessException(property_name)
625
if prop._dbus_get_args_options[u"byte_arrays"]:
1403
if prop._dbus_get_args_options["byte_arrays"]:
626
1404
# The byte_arrays option is not supported yet on
627
1405
# signatures other than "ay".
628
if prop._dbus_signature != u"ay":
629
raise ValueError
630
value = dbus.ByteArray(''.join(unichr(byte)
631
for byte in value))
1406
if prop._dbus_signature != "ay":
1407
raise ValueError("Byte arrays not supported for non-"
1408
"'ay' signature {!r}"
1409
.format(prop._dbus_signature))
1410
value = dbus.ByteArray(b''.join(chr(byte)
1411
for byte in value))
632
1412
prop(value)
633
634
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
635
out_signature=u"a{sv}")
1413
1414
@dbus.service.method(dbus.PROPERTIES_IFACE,
1415
in_signature="s",
1416
out_signature="a{sv}")
636
1417
def GetAll(self, interface_name):
637
1418
"""Standard D-Bus property GetAll() method, see D-Bus
638
1419
standard.
639
1420
640
1421
Note: Will not include properties with access="write".
641
1422
"""
642
all = {}
643
for name, prop in self._get_all_dbus_properties():
1423
properties = {}
1424
for name, prop in self._get_all_dbus_things("property"):
644
1425
if (interface_name
645
1426
and interface_name != prop._dbus_interface):
646
1427
# Interface non-empty but did not match
647
1428
continue
648
1429
# Ignore write-only properties
649
if prop._dbus_access == u"write":
1430
if prop._dbus_access == "write":
650
1431
continue
651
1432
value = prop()
652
if not hasattr(value, u"variant_level"):
653
all[name] = value
1433
if not hasattr(value, "variant_level"):
1434
properties[name] = value
654
1435
continue
655
all[name] = type(value)(value, variant_level=
656
value.variant_level+1)
657
return dbus.Dictionary(all, signature=u"sv")
658
1436
properties[name] = type(value)(
1437
value, variant_level=value.variant_level + 1)
1438
return dbus.Dictionary(properties, signature="sv")
1439
1440
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1441
def PropertiesChanged(self, interface_name, changed_properties,
1442
invalidated_properties):
1443
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1444
standard.
1445
"""
1446
pass
1447
659
1448
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
660
out_signature=u"s",
1449
out_signature="s",
661
1450
path_keyword='object_path',
662
1451
connection_keyword='connection')
663
1452
def Introspect(self, object_path, connection):
664
"""Standard D-Bus method, overloaded to insert property tags.
1453
"""Overloading of standard D-Bus method.
1454
1455
Inserts property tags and interface annotation tags.
665
1456
"""
666
xmlstring = dbus.service.Object.Introspect(self, object_path,
667
connection)
1457
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1458
object_path,
1459
connection)
668
1460
try:
669
1461
document = xml.dom.minidom.parseString(xmlstring)
1462
670
1463
def make_tag(document, name, prop):
671
e = document.createElement(u"property")
672
e.setAttribute(u"name", name)
673
e.setAttribute(u"type", prop._dbus_signature)
674
e.setAttribute(u"access", prop._dbus_access)
1464
e = document.createElement("property")
1465
e.setAttribute("name", name)
1466
e.setAttribute("type", prop._dbus_signature)
1467
e.setAttribute("access", prop._dbus_access)
675
1468
return e
676
for if_tag in document.getElementsByTagName(u"interface"):
1469
1470
for if_tag in document.getElementsByTagName("interface"):
1471
# Add property tags
677
1472
for tag in (make_tag(document, name, prop)
678
1473
for name, prop
679
in self._get_all_dbus_properties()
1474
in self._get_all_dbus_things("property")
680
1475
if prop._dbus_interface
681
== if_tag.getAttribute(u"name")):
1476
== if_tag.getAttribute("name")):
682
1477
if_tag.appendChild(tag)
1478
# Add annotation tags for properties
1479
for tag in if_tag.getElementsByTagName("property"):
1480
annots = dict()
1481
for name, prop in self._get_all_dbus_things(
1482
"property"):
1483
if (name == tag.getAttribute("name")
1484
and prop._dbus_interface
1485
== if_tag.getAttribute("name")):
1486
annots.update(getattr(
1487
prop, "_dbus_annotations", {}))
1488
for name, value in annots.items():
1489
ann_tag = document.createElement(
1490
"annotation")
1491
ann_tag.setAttribute("name", name)
1492
ann_tag.setAttribute("value", value)
1493
tag.appendChild(ann_tag)
683
1494
# Add the names to the return values for the
684
1495
# "org.freedesktop.DBus.Properties" methods
685
if (if_tag.getAttribute(u"name")
686
== u"org.freedesktop.DBus.Properties"):
687
for cn in if_tag.getElementsByTagName(u"method"):
688
if cn.getAttribute(u"name") == u"Get":
689
for arg in cn.getElementsByTagName(u"arg"):
690
if (arg.getAttribute(u"direction")
691
== u"out"):
692
arg.setAttribute(u"name", u"value")
693
elif cn.getAttribute(u"name") == u"GetAll":
694
for arg in cn.getElementsByTagName(u"arg"):
695
if (arg.getAttribute(u"direction")
696
== u"out"):
697
arg.setAttribute(u"name", u"props")
698
xmlstring = document.toxml(u"utf-8")
699
document.unlink()
700
except (AttributeError, xml.dom.DOMException,
701
xml.parsers.expat.ExpatError), error:
702
logger.error(u"Failed to override Introspection method",
703
error)
704
return xmlstring
705
706
1496
if (if_tag.getAttribute("name")
1497
== "org.freedesktop.DBus.Properties"):
1498
for cn in if_tag.getElementsByTagName("method"):
1499
if cn.getAttribute("name") == "Get":
1500
for arg in cn.getElementsByTagName("arg"):
1501
if (arg.getAttribute("direction")
1502
== "out"):
1503
arg.setAttribute("name", "value")
1504
elif cn.getAttribute("name") == "GetAll":
1505
for arg in cn.getElementsByTagName("arg"):
1506
if (arg.getAttribute("direction")
1507
== "out"):
1508
arg.setAttribute("name", "props")
1509
xmlstring = document.toxml("utf-8")
1510
document.unlink()
1511
except (AttributeError, xml.dom.DOMException,
1512
xml.parsers.expat.ExpatError) as error:
1513
logger.error("Failed to override Introspection method",
1514
exc_info=error)
1515
return xmlstring
1516
1517
1518
try:
1519
dbus.OBJECT_MANAGER_IFACE
1520
except AttributeError:
1521
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1522
1523
1524
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1525
"""A D-Bus object with an ObjectManager.
1526
1527
Classes inheriting from this exposes the standard
1528
GetManagedObjects call and the InterfacesAdded and
1529
InterfacesRemoved signals on the standard
1530
"org.freedesktop.DBus.ObjectManager" interface.
1531
1532
Note: No signals are sent automatically; they must be sent
1533
manually.
1534
"""
1535
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1536
out_signature="a{oa{sa{sv}}}")
1537
def GetManagedObjects(self):
1538
"""This function must be overridden"""
1539
raise NotImplementedError()
1540
1541
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1542
signature="oa{sa{sv}}")
1543
def InterfacesAdded(self, object_path, interfaces_and_properties):
1544
pass
1545
1546
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1547
def InterfacesRemoved(self, object_path, interfaces):
1548
pass
1549
1550
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1551
out_signature="s",
1552
path_keyword='object_path',
1553
connection_keyword='connection')
1554
def Introspect(self, object_path, connection):
1555
"""Overloading of standard D-Bus method.
1556
1557
Override return argument name of GetManagedObjects to be
1558
"objpath_interfaces_and_properties"
1559
"""
1560
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1561
object_path,
1562
connection)
1563
try:
1564
document = xml.dom.minidom.parseString(xmlstring)
1565
1566
for if_tag in document.getElementsByTagName("interface"):
1567
# Fix argument name for the GetManagedObjects method
1568
if (if_tag.getAttribute("name")
1569
== dbus.OBJECT_MANAGER_IFACE):
1570
for cn in if_tag.getElementsByTagName("method"):
1571
if (cn.getAttribute("name")
1572
== "GetManagedObjects"):
1573
for arg in cn.getElementsByTagName("arg"):
1574
if (arg.getAttribute("direction")
1575
== "out"):
1576
arg.setAttribute(
1577
"name",
1578
"objpath_interfaces"
1579
"_and_properties")
1580
xmlstring = document.toxml("utf-8")
1581
document.unlink()
1582
except (AttributeError, xml.dom.DOMException,
1583
xml.parsers.expat.ExpatError) as error:
1584
logger.error("Failed to override Introspection method",
1585
exc_info=error)
1586
return xmlstring
1587
1588
1589
def datetime_to_dbus(dt, variant_level=0):
1590
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1591
if dt is None:
1592
return dbus.String("", variant_level=variant_level)
1593
return dbus.String(dt.isoformat(), variant_level=variant_level)
1594
1595
1596
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1597
"""A class decorator; applied to a subclass of
1598
dbus.service.Object, it will add alternate D-Bus attributes with
1599
interface names according to the "alt_interface_names" mapping.
1600
Usage:
1601
1602
@alternate_dbus_interfaces({"org.example.Interface":
1603
"net.example.AlternateInterface"})
1604
class SampleDBusObject(dbus.service.Object):
1605
@dbus.service.method("org.example.Interface")
1606
def SampleDBusMethod():
1607
pass
1608
1609
The above "SampleDBusMethod" on "SampleDBusObject" will be
1610
reachable via two interfaces: "org.example.Interface" and
1611
"net.example.AlternateInterface", the latter of which will have
1612
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1613
"true", unless "deprecate" is passed with a False value.
1614
1615
This works for methods and signals, and also for D-Bus properties
1616
(from DBusObjectWithProperties) and interfaces (from the
1617
dbus_interface_annotations decorator).
1618
"""
1619
1620
def wrapper(cls):
1621
for orig_interface_name, alt_interface_name in (
1622
alt_interface_names.items()):
1623
attr = {}
1624
interface_names = set()
1625
# Go though all attributes of the class
1626
for attrname, attribute in inspect.getmembers(cls):
1627
# Ignore non-D-Bus attributes, and D-Bus attributes
1628
# with the wrong interface name
1629
if (not hasattr(attribute, "_dbus_interface")
1630
or not attribute._dbus_interface.startswith(
1631
orig_interface_name)):
1632
continue
1633
# Create an alternate D-Bus interface name based on
1634
# the current name
1635
alt_interface = attribute._dbus_interface.replace(
1636
orig_interface_name, alt_interface_name)
1637
interface_names.add(alt_interface)
1638
# Is this a D-Bus signal?
1639
if getattr(attribute, "_dbus_is_signal", False):
1640
# Extract the original non-method undecorated
1641
# function by black magic
1642
if sys.version_info.major == 2:
1643
nonmethod_func = (dict(
1644
zip(attribute.func_code.co_freevars,
1645
attribute.__closure__))
1646
["func"].cell_contents)
1647
else:
1648
nonmethod_func = (dict(
1649
zip(attribute.__code__.co_freevars,
1650
attribute.__closure__))
1651
["func"].cell_contents)
1652
# Create a new, but exactly alike, function
1653
# object, and decorate it to be a new D-Bus signal
1654
# with the alternate D-Bus interface name
1655
new_function = copy_function(nonmethod_func)
1656
new_function = (dbus.service.signal(
1657
alt_interface,
1658
attribute._dbus_signature)(new_function))
1659
# Copy annotations, if any
1660
try:
1661
new_function._dbus_annotations = dict(
1662
attribute._dbus_annotations)
1663
except AttributeError:
1664
pass
1665
1666
# Define a creator of a function to call both the
1667
# original and alternate functions, so both the
1668
# original and alternate signals gets sent when
1669
# the function is called
1670
def fixscope(func1, func2):
1671
"""This function is a scope container to pass
1672
func1 and func2 to the "call_both" function
1673
outside of its arguments"""
1674
1675
@functools.wraps(func2)
1676
def call_both(*args, **kwargs):
1677
"""This function will emit two D-Bus
1678
signals by calling func1 and func2"""
1679
func1(*args, **kwargs)
1680
func2(*args, **kwargs)
1681
# Make wrapper function look like a D-Bus
1682
# signal
1683
for name, attr in inspect.getmembers(func2):
1684
if name.startswith("_dbus_"):
1685
setattr(call_both, name, attr)
1686
1687
return call_both
1688
# Create the "call_both" function and add it to
1689
# the class
1690
attr[attrname] = fixscope(attribute, new_function)
1691
# Is this a D-Bus method?
1692
elif getattr(attribute, "_dbus_is_method", False):
1693
# Create a new, but exactly alike, function
1694
# object. Decorate it to be a new D-Bus method
1695
# with the alternate D-Bus interface name. Add it
1696
# to the class.
1697
attr[attrname] = (
1698
dbus.service.method(
1699
alt_interface,
1700
attribute._dbus_in_signature,
1701
attribute._dbus_out_signature)
1702
(copy_function(attribute)))
1703
# Copy annotations, if any
1704
try:
1705
attr[attrname]._dbus_annotations = dict(
1706
attribute._dbus_annotations)
1707
except AttributeError:
1708
pass
1709
# Is this a D-Bus property?
1710
elif getattr(attribute, "_dbus_is_property", False):
1711
# Create a new, but exactly alike, function
1712
# object, and decorate it to be a new D-Bus
1713
# property with the alternate D-Bus interface
1714
# name. Add it to the class.
1715
attr[attrname] = (dbus_service_property(
1716
alt_interface, attribute._dbus_signature,
1717
attribute._dbus_access,
1718
attribute._dbus_get_args_options
1719
["byte_arrays"])
1720
(copy_function(attribute)))
1721
# Copy annotations, if any
1722
try:
1723
attr[attrname]._dbus_annotations = dict(
1724
attribute._dbus_annotations)
1725
except AttributeError:
1726
pass
1727
# Is this a D-Bus interface?
1728
elif getattr(attribute, "_dbus_is_interface", False):
1729
# Create a new, but exactly alike, function
1730
# object. Decorate it to be a new D-Bus interface
1731
# with the alternate D-Bus interface name. Add it
1732
# to the class.
1733
attr[attrname] = (
1734
dbus_interface_annotations(alt_interface)
1735
(copy_function(attribute)))
1736
if deprecate:
1737
# Deprecate all alternate interfaces
1738
iname = "_AlternateDBusNames_interface_annotation{}"
1739
for interface_name in interface_names:
1740
1741
@dbus_interface_annotations(interface_name)
1742
def func(self):
1743
return {"org.freedesktop.DBus.Deprecated":
1744
"true"}
1745
# Find an unused name
1746
for aname in (iname.format(i)
1747
for i in itertools.count()):
1748
if aname not in attr:
1749
attr[aname] = func
1750
break
1751
if interface_names:
1752
# Replace the class with a new subclass of it with
1753
# methods, signals, etc. as created above.
1754
if sys.version_info.major == 2:
1755
cls = type(b"{}Alternate".format(cls.__name__),
1756
(cls, ), attr)
1757
else:
1758
cls = type("{}Alternate".format(cls.__name__),
1759
(cls, ), attr)
1760
return cls
1761
1762
return wrapper
1763
1764
1765
@alternate_dbus_interfaces({"se.recompile.Mandos":
1766
"se.bsnet.fukt.Mandos"})
707
1767
class ClientDBus(Client, DBusObjectWithProperties):
708
1768
"""A Client class using D-Bus
709
1769
710
1770
Attributes:
711
1771
dbus_object_path: dbus.ObjectPath
712
1772
bus: dbus.SystemBus()
713
1773
"""
714
1774
715
1775
runtime_expansions = (Client.runtime_expansions
716
+ (u"dbus_object_path",))
717
1776
+ ("dbus_object_path", ))
1777
1778
_interface = "se.recompile.Mandos.Client"
1779
718
1780
# dbus.service.Object doesn't use super(), so we can't either.
719
720
def __init__(self, bus = None, *args, **kwargs):
721
self._approvals_pending = 0
1781
1782
def __init__(self, bus=None, *args, **kwargs):
722
1783
self.bus = bus
723
1784
Client.__init__(self, *args, **kwargs)
724
1785
# Only now, when this client is initialized, can it show up on
725
1786
# the D-Bus
726
self.dbus_object_path = (dbus.ObjectPath
727
(u"/clients/"
728
+ self.name.replace(u".", u"_")))
1787
client_object_name = str(self.name).translate(
1788
{ord("."): ord("_"),
1789
ord("-"): ord("_")})
1790
self.dbus_object_path = dbus.ObjectPath(
1791
"/clients/" + client_object_name)
729
1792
DBusObjectWithProperties.__init__(self, self.bus,
730
1793
self.dbus_object_path)
731
732
def _get_approvals_pending(self):
733
return self._approvals_pending
734
def _set_approvals_pending(self, value):
735
old_value = self._approvals_pending
736
self._approvals_pending = value
737
bval = bool(value)
738
if (hasattr(self, "dbus_object_path")
739
and bval is not bool(old_value)):
740
dbus_bool = dbus.Boolean(bval, variant_level=1)
741
self.PropertyChanged(dbus.String(u"ApprovalPending"),
742
dbus_bool)
743
744
approvals_pending = property(_get_approvals_pending,
745
_set_approvals_pending)
746
del _get_approvals_pending, _set_approvals_pending
747
748
@staticmethod
749
def _datetime_to_dbus(dt, variant_level=0):
750
"""Convert a UTC datetime.datetime() to a D-Bus type."""
751
return dbus.String(dt.isoformat(),
752
variant_level=variant_level)
753
754
def enable(self):
755
oldstate = getattr(self, u"enabled", False)
756
r = Client.enable(self)
757
if oldstate != self.enabled:
758
# Emit D-Bus signals
759
self.PropertyChanged(dbus.String(u"Enabled"),
760
dbus.Boolean(True, variant_level=1))
761
self.PropertyChanged(
762
dbus.String(u"LastEnabled"),
763
self._datetime_to_dbus(self.last_enabled,
764
variant_level=1))
765
return r
766
767
def disable(self, quiet = False):
768
oldstate = getattr(self, u"enabled", False)
769
r = Client.disable(self, quiet=quiet)
770
if not quiet and oldstate != self.enabled:
771
# Emit D-Bus signal
772
self.PropertyChanged(dbus.String(u"Enabled"),
773
dbus.Boolean(False, variant_level=1))
774
return r
775
1794
1795
def notifychangeproperty(transform_func, dbus_name,
1796
type_func=lambda x: x,
1797
variant_level=1,
1798
invalidate_only=False,
1799
_interface=_interface):
1800
""" Modify a variable so that it's a property which announces
1801
its changes to DBus.
1802
1803
transform_fun: Function that takes a value and a variant_level
1804
and transforms it to a D-Bus type.
1805
dbus_name: D-Bus name of the variable
1806
type_func: Function that transform the value before sending it
1807
to the D-Bus. Default: no transform
1808
variant_level: D-Bus variant level. Default: 1
1809
"""
1810
attrname = "_{}".format(dbus_name)
1811
1812
def setter(self, value):
1813
if hasattr(self, "dbus_object_path"):
1814
if (not hasattr(self, attrname) or
1815
type_func(getattr(self, attrname, None))
1816
!= type_func(value)):
1817
if invalidate_only:
1818
self.PropertiesChanged(
1819
_interface, dbus.Dictionary(),
1820
dbus.Array((dbus_name, )))
1821
else:
1822
dbus_value = transform_func(
1823
type_func(value),
1824
variant_level=variant_level)
1825
self.PropertyChanged(dbus.String(dbus_name),
1826
dbus_value)
1827
self.PropertiesChanged(
1828
_interface,
1829
dbus.Dictionary({dbus.String(dbus_name):
1830
dbus_value}),
1831
dbus.Array())
1832
setattr(self, attrname, value)
1833
1834
return property(lambda self: getattr(self, attrname), setter)
1835
1836
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1837
approvals_pending = notifychangeproperty(dbus.Boolean,
1838
"ApprovalPending",
1839
type_func=bool)
1840
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1841
last_enabled = notifychangeproperty(datetime_to_dbus,
1842
"LastEnabled")
1843
checker = notifychangeproperty(
1844
dbus.Boolean, "CheckerRunning",
1845
type_func=lambda checker: checker is not None)
1846
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1847
"LastCheckedOK")
1848
last_checker_status = notifychangeproperty(dbus.Int16,
1849
"LastCheckerStatus")
1850
last_approval_request = notifychangeproperty(
1851
datetime_to_dbus, "LastApprovalRequest")
1852
approved_by_default = notifychangeproperty(dbus.Boolean,
1853
"ApprovedByDefault")
1854
approval_delay = notifychangeproperty(
1855
dbus.UInt64, "ApprovalDelay",
1856
type_func=lambda td: td.total_seconds() * 1000)
1857
approval_duration = notifychangeproperty(
1858
dbus.UInt64, "ApprovalDuration",
1859
type_func=lambda td: td.total_seconds() * 1000)
1860
host = notifychangeproperty(dbus.String, "Host")
1861
timeout = notifychangeproperty(
1862
dbus.UInt64, "Timeout",
1863
type_func=lambda td: td.total_seconds() * 1000)
1864
extended_timeout = notifychangeproperty(
1865
dbus.UInt64, "ExtendedTimeout",
1866
type_func=lambda td: td.total_seconds() * 1000)
1867
interval = notifychangeproperty(
1868
dbus.UInt64, "Interval",
1869
type_func=lambda td: td.total_seconds() * 1000)
1870
checker_command = notifychangeproperty(dbus.String, "Checker")
1871
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1872
invalidate_only=True)
1873
1874
del notifychangeproperty
1875
776
1876
def __del__(self, *args, **kwargs):
777
1877
try:
778
1878
self.remove_from_connection()
779
1879
except LookupError:
780
1880
pass
781
if hasattr(DBusObjectWithProperties, u"__del__"):
1881
if hasattr(DBusObjectWithProperties, "__del__"):
782
1882
DBusObjectWithProperties.__del__(self, *args, **kwargs)
783
1883
Client.__del__(self, *args, **kwargs)
784
785
def checker_callback(self, pid, condition, command,
786
*args, **kwargs):
787
self.checker_callback_tag = None
788
self.checker = None
789
# Emit D-Bus signal
790
self.PropertyChanged(dbus.String(u"CheckerRunning"),
791
dbus.Boolean(False, variant_level=1))
792
if os.WIFEXITED(condition):
793
exitstatus = os.WEXITSTATUS(condition)
1884
1885
def checker_callback(self, source, condition,
1886
connection, command, *args, **kwargs):
1887
ret = Client.checker_callback(self, source, condition,
1888
connection, command, *args,
1889
**kwargs)
1890
exitstatus = self.last_checker_status
1891
if exitstatus >= 0:
794
1892
# Emit D-Bus signal
795
1893
self.CheckerCompleted(dbus.Int16(exitstatus),
796
dbus.Int64(condition),
1894
# This is specific to GNU libC
1895
dbus.Int64(exitstatus << 8),
797
1896
dbus.String(command))
798
1897
else:
799
1898
# Emit D-Bus signal
800
1899
self.CheckerCompleted(dbus.Int16(-1),
801
dbus.Int64(condition),
1900
dbus.Int64(
1901
# This is specific to GNU libC
1902
(exitstatus << 8)
1903
| self.last_checker_signal),
802
1904
dbus.String(command))
803
804
return Client.checker_callback(self, pid, condition, command,
805
*args, **kwargs)
806
807
def checked_ok(self, *args, **kwargs):
808
r = Client.checked_ok(self, *args, **kwargs)
809
# Emit D-Bus signal
810
self.PropertyChanged(
811
dbus.String(u"LastCheckedOK"),
812
(self._datetime_to_dbus(self.last_checked_ok,
813
variant_level=1)))
814
return r
815
1905
return ret
1906
816
1907
def start_checker(self, *args, **kwargs):
817
old_checker = self.checker
818
if self.checker is not None:
819
old_checker_pid = self.checker.pid
820
else:
821
old_checker_pid = None
1908
old_checker_pid = getattr(self.checker, "pid", None)
822
1909
r = Client.start_checker(self, *args, **kwargs)
823
1910
# Only if new checker process was started
824
1911
if (self.checker is not None
825
1912
and old_checker_pid != self.checker.pid):
826
1913
# Emit D-Bus signal
827
1914
self.CheckerStarted(self.current_checker_command)
828
self.PropertyChanged(
829
dbus.String(u"CheckerRunning"),
830
dbus.Boolean(True, variant_level=1))
831
return r
832
833
def stop_checker(self, *args, **kwargs):
834
old_checker = getattr(self, u"checker", None)
835
r = Client.stop_checker(self, *args, **kwargs)
836
if (old_checker is not None
837
and getattr(self, u"checker", None) is None):
838
self.PropertyChanged(dbus.String(u"CheckerRunning"),
839
dbus.Boolean(False, variant_level=1))
840
1915
return r
841
1916
842
1917
def _reset_approved(self):
843
self._approved = None
1918
self.approved = None
844
1919
return False
845
1920
846
1921
def approve(self, value=True):
1922
self.approved = value
1923
GLib.timeout_add(int(self.approval_duration.total_seconds()
1924
* 1000), self._reset_approved)
847
1925
self.send_changedstate()
848
self._approved = value
849
gobject.timeout_add(self._timedelta_to_milliseconds
850
(self.approval_duration),
851
self._reset_approved)
852
853
854
## D-Bus methods, signals & properties
855
_interface = u"se.bsnet.fukt.Mandos.Client"
856
857
## Signals
858
1926
1927
# D-Bus methods, signals & properties
1928
1929
# Interfaces
1930
1931
# Signals
1932
859
1933
# CheckerCompleted - signal
860
@dbus.service.signal(_interface, signature=u"nxs")
1934
@dbus.service.signal(_interface, signature="nxs")
861
1935
def CheckerCompleted(self, exitcode, waitstatus, command):
862
1936
"D-Bus signal"
863
1937
pass
864
1938
865
1939
# CheckerStarted - signal
866
@dbus.service.signal(_interface, signature=u"s")
1940
@dbus.service.signal(_interface, signature="s")
867
1941
def CheckerStarted(self, command):
868
1942
"D-Bus signal"
869
1943
pass
870
1944
871
1945
# PropertyChanged - signal
872
@dbus.service.signal(_interface, signature=u"sv")
1946
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1947
@dbus.service.signal(_interface, signature="sv")
873
1948
def PropertyChanged(self, property, value):
874
1949
"D-Bus signal"
875
1950
pass
876
1951
877
1952
# GotSecret - signal
878
1953
@dbus.service.signal(_interface)
879
1954
def GotSecret(self):
882
1957
server to mandos-client
883
1958
"""
884
1959
pass
885
1960
886
1961
# Rejected - signal
887
@dbus.service.signal(_interface, signature=u"s")
1962
@dbus.service.signal(_interface, signature="s")
888
1963
def Rejected(self, reason):
889
1964
"D-Bus signal"
890
1965
pass
891
1966
892
1967
# NeedApproval - signal
893
@dbus.service.signal(_interface, signature=u"tb")
1968
@dbus.service.signal(_interface, signature="tb")
894
1969
def NeedApproval(self, timeout, default):
895
1970
"D-Bus signal"
896
pass
897
898
## Methods
1971
return self.need_approval()
1972
1973
# Methods
899
1974
900
1975
# Approve - method
901
@dbus.service.method(_interface, in_signature=u"b")
1976
@dbus.service.method(_interface, in_signature="b")
902
1977
def Approve(self, value):
903
1978
self.approve(value)
904
1979
905
1980
# CheckedOK - method
906
1981
@dbus.service.method(_interface)
907
1982
def CheckedOK(self):
908
return self.checked_ok()
909
1983
self.checked_ok()
1984
910
1985
# Enable - method
1986
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
911
1987
@dbus.service.method(_interface)
912
1988
def Enable(self):
913
1989
"D-Bus method"
914
1990
self.enable()
915
1991
916
1992
# StartChecker - method
1993
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
917
1994
@dbus.service.method(_interface)
918
1995
def StartChecker(self):
919
1996
"D-Bus method"
920
1997
self.start_checker()
921
1998
922
1999
# Disable - method
2000
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
923
2001
@dbus.service.method(_interface)
924
2002
def Disable(self):
925
2003
"D-Bus method"
926
2004
self.disable()
927
2005
928
2006
# StopChecker - method
2007
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
929
2008
@dbus.service.method(_interface)
930
2009
def StopChecker(self):
931
2010
self.stop_checker()
932
933
## Properties
934
2011
2012
# Properties
2013
935
2014
# ApprovalPending - property
936
@dbus_service_property(_interface, signature=u"b", access=u"read")
2015
@dbus_service_property(_interface, signature="b", access="read")
937
2016
def ApprovalPending_dbus_property(self):
938
2017
return dbus.Boolean(bool(self.approvals_pending))
939
2018
940
2019
# ApprovedByDefault - property
941
@dbus_service_property(_interface, signature=u"b",
942
access=u"readwrite")
2020
@dbus_service_property(_interface,
2021
signature="b",
2022
access="readwrite")
943
2023
def ApprovedByDefault_dbus_property(self, value=None):
944
2024
if value is None: # get
945
2025
return dbus.Boolean(self.approved_by_default)
946
2026
self.approved_by_default = bool(value)
947
# Emit D-Bus signal
948
self.PropertyChanged(dbus.String(u"ApprovedByDefault"),
949
dbus.Boolean(value, variant_level=1))
950
2027
951
2028
# ApprovalDelay - property
952
@dbus_service_property(_interface, signature=u"t",
953
access=u"readwrite")
2029
@dbus_service_property(_interface,
2030
signature="t",
2031
access="readwrite")
954
2032
def ApprovalDelay_dbus_property(self, value=None):
955
2033
if value is None: # get
956
return dbus.UInt64(self.approval_delay_milliseconds())
2034
return dbus.UInt64(self.approval_delay.total_seconds()
2035
* 1000)
957
2036
self.approval_delay = datetime.timedelta(0, 0, 0, value)
958
# Emit D-Bus signal
959
self.PropertyChanged(dbus.String(u"ApprovalDelay"),
960
dbus.UInt64(value, variant_level=1))
961
2037
962
2038
# ApprovalDuration - property
963
@dbus_service_property(_interface, signature=u"t",
964
access=u"readwrite")
2039
@dbus_service_property(_interface,
2040
signature="t",
2041
access="readwrite")
965
2042
def ApprovalDuration_dbus_property(self, value=None):
966
2043
if value is None: # get
967
return dbus.UInt64(self._timedelta_to_milliseconds(
968
self.approval_duration))
2044
return dbus.UInt64(self.approval_duration.total_seconds()
2045
* 1000)
969
2046
self.approval_duration = datetime.timedelta(0, 0, 0, value)
970
# Emit D-Bus signal
971
self.PropertyChanged(dbus.String(u"ApprovalDuration"),
972
dbus.UInt64(value, variant_level=1))
973
2047
974
2048
# Name - property
975
@dbus_service_property(_interface, signature=u"s", access=u"read")
2049
@dbus_annotations(
2050
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2051
@dbus_service_property(_interface, signature="s", access="read")
976
2052
def Name_dbus_property(self):
977
2053
return dbus.String(self.name)
978
2054
2055
# KeyID - property
2056
@dbus_annotations(
2057
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2058
@dbus_service_property(_interface, signature="s", access="read")
2059
def KeyID_dbus_property(self):
2060
return dbus.String(self.key_id)
2061
979
2062
# Fingerprint - property
980
@dbus_service_property(_interface, signature=u"s", access=u"read")
2063
@dbus_annotations(
2064
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2065
@dbus_service_property(_interface, signature="s", access="read")
981
2066
def Fingerprint_dbus_property(self):
982
2067
return dbus.String(self.fingerprint)
983
2068
984
2069
# Host - property
985
@dbus_service_property(_interface, signature=u"s",
986
access=u"readwrite")
2070
@dbus_service_property(_interface,
2071
signature="s",
2072
access="readwrite")
987
2073
def Host_dbus_property(self, value=None):
988
2074
if value is None: # get
989
2075
return dbus.String(self.host)
990
self.host = value
991
# Emit D-Bus signal
992
self.PropertyChanged(dbus.String(u"Host"),
993
dbus.String(value, variant_level=1))
994
2076
self.host = str(value)
2077
995
2078
# Created - property
996
@dbus_service_property(_interface, signature=u"s", access=u"read")
2079
@dbus_annotations(
2080
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2081
@dbus_service_property(_interface, signature="s", access="read")
997
2082
def Created_dbus_property(self):
998
return dbus.String(self._datetime_to_dbus(self.created))
999
2083
return datetime_to_dbus(self.created)
2084
1000
2085
# LastEnabled - property
1001
@dbus_service_property(_interface, signature=u"s", access=u"read")
2086
@dbus_service_property(_interface, signature="s", access="read")
1002
2087
def LastEnabled_dbus_property(self):
1003
if self.last_enabled is None:
1004
return dbus.String(u"")
1005
return dbus.String(self._datetime_to_dbus(self.last_enabled))
1006
2088
return datetime_to_dbus(self.last_enabled)
2089
1007
2090
# Enabled - property
1008
@dbus_service_property(_interface, signature=u"b",
1009
access=u"readwrite")
2091
@dbus_service_property(_interface,
2092
signature="b",
2093
access="readwrite")
1010
2094
def Enabled_dbus_property(self, value=None):
1011
2095
if value is None: # get
1012
2096
return dbus.Boolean(self.enabled)
1014
2098
self.enable()
1015
2099
else:
1016
2100
self.disable()
1017
2101
1018
2102
# LastCheckedOK - property
1019
@dbus_service_property(_interface, signature=u"s",
1020
access=u"readwrite")
2103
@dbus_service_property(_interface,
2104
signature="s",
2105
access="readwrite")
1021
2106
def LastCheckedOK_dbus_property(self, value=None):
1022
2107
if value is not None:
1023
2108
self.checked_ok()
1024
2109
return
1025
if self.last_checked_ok is None:
1026
return dbus.String(u"")
1027
return dbus.String(self._datetime_to_dbus(self
1028
.last_checked_ok))
1029
2110
return datetime_to_dbus(self.last_checked_ok)
2111
2112
# LastCheckerStatus - property
2113
@dbus_service_property(_interface, signature="n", access="read")
2114
def LastCheckerStatus_dbus_property(self):
2115
return dbus.Int16(self.last_checker_status)
2116
2117
# Expires - property
2118
@dbus_service_property(_interface, signature="s", access="read")
2119
def Expires_dbus_property(self):
2120
return datetime_to_dbus(self.expires)
2121
2122
# LastApprovalRequest - property
2123
@dbus_service_property(_interface, signature="s", access="read")
2124
def LastApprovalRequest_dbus_property(self):
2125
return datetime_to_dbus(self.last_approval_request)
2126
1030
2127
# Timeout - property
1031
@dbus_service_property(_interface, signature=u"t",
1032
access=u"readwrite")
2128
@dbus_service_property(_interface,
2129
signature="t",
2130
access="readwrite")
1033
2131
def Timeout_dbus_property(self, value=None):
1034
2132
if value is None: # get
1035
return dbus.UInt64(self.timeout_milliseconds())
2133
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2134
old_timeout = self.timeout
1036
2135
self.timeout = datetime.timedelta(0, 0, 0, value)
1037
# Emit D-Bus signal
1038
self.PropertyChanged(dbus.String(u"Timeout"),
1039
dbus.UInt64(value, variant_level=1))
1040
if getattr(self, u"disable_initiator_tag", None) is None:
1041
return
1042
# Reschedule timeout
1043
gobject.source_remove(self.disable_initiator_tag)
1044
self.disable_initiator_tag = None
1045
time_to_die = (self.
1046
_timedelta_to_milliseconds((self
1047
.last_checked_ok
1048
+ self.timeout)
1049
- datetime.datetime
1050
.utcnow()))
1051
if time_to_die <= 0:
1052
# The timeout has passed
1053
self.disable()
1054
else:
1055
self.disable_initiator_tag = (gobject.timeout_add
1056
(time_to_die, self.disable))
1057
2136
# Reschedule disabling
2137
if self.enabled:
2138
now = datetime.datetime.utcnow()
2139
self.expires += self.timeout - old_timeout
2140
if self.expires <= now:
2141
# The timeout has passed
2142
self.disable()
2143
else:
2144
if (getattr(self, "disable_initiator_tag", None)
2145
is None):
2146
return
2147
GLib.source_remove(self.disable_initiator_tag)
2148
self.disable_initiator_tag = GLib.timeout_add(
2149
int((self.expires - now).total_seconds() * 1000),
2150
self.disable)
2151
2152
# ExtendedTimeout - property
2153
@dbus_service_property(_interface,
2154
signature="t",
2155
access="readwrite")
2156
def ExtendedTimeout_dbus_property(self, value=None):
2157
if value is None: # get
2158
return dbus.UInt64(self.extended_timeout.total_seconds()
2159
* 1000)
2160
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2161
1058
2162
# Interval - property
1059
@dbus_service_property(_interface, signature=u"t",
1060
access=u"readwrite")
2163
@dbus_service_property(_interface,
2164
signature="t",
2165
access="readwrite")
1061
2166
def Interval_dbus_property(self, value=None):
1062
2167
if value is None: # get
1063
return dbus.UInt64(self.interval_milliseconds())
2168
return dbus.UInt64(self.interval.total_seconds() * 1000)
1064
2169
self.interval = datetime.timedelta(0, 0, 0, value)
1065
# Emit D-Bus signal
1066
self.PropertyChanged(dbus.String(u"Interval"),
1067
dbus.UInt64(value, variant_level=1))
1068
if getattr(self, u"checker_initiator_tag", None) is None:
2170
if getattr(self, "checker_initiator_tag", None) is None:
1069
2171
return
1070
# Reschedule checker run
1071
gobject.source_remove(self.checker_initiator_tag)
1072
self.checker_initiator_tag = (gobject.timeout_add
1073
(value, self.start_checker))
1074
self.start_checker() # Start one now, too
2172
if self.enabled:
2173
# Reschedule checker run
2174
GLib.source_remove(self.checker_initiator_tag)
2175
self.checker_initiator_tag = GLib.timeout_add(
2176
value, self.start_checker)
2177
self.start_checker() # Start one now, too
1075
2178
1076
2179
# Checker - property
1077
@dbus_service_property(_interface, signature=u"s",
1078
access=u"readwrite")
2180
@dbus_service_property(_interface,
2181
signature="s",
2182
access="readwrite")
1079
2183
def Checker_dbus_property(self, value=None):
1080
2184
if value is None: # get
1081
2185
return dbus.String(self.checker_command)
1082
self.checker_command = value
1083
# Emit D-Bus signal
1084
self.PropertyChanged(dbus.String(u"Checker"),
1085
dbus.String(self.checker_command,
1086
variant_level=1))
1087
2186
self.checker_command = str(value)
2187
1088
2188
# CheckerRunning - property
1089
@dbus_service_property(_interface, signature=u"b",
1090
access=u"readwrite")
2189
@dbus_service_property(_interface,
2190
signature="b",
2191
access="readwrite")
1091
2192
def CheckerRunning_dbus_property(self, value=None):
1092
2193
if value is None: # get
1093
2194
return dbus.Boolean(self.checker is not None)
1095
2196
self.start_checker()
1096
2197
else:
1097
2198
self.stop_checker()
1098
2199
1099
2200
# ObjectPath - property
1100
@dbus_service_property(_interface, signature=u"o", access=u"read")
2201
@dbus_annotations(
2202
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2203
"org.freedesktop.DBus.Deprecated": "true"})
2204
@dbus_service_property(_interface, signature="o", access="read")
1101
2205
def ObjectPath_dbus_property(self):
1102
return self.dbus_object_path # is already a dbus.ObjectPath
1103
2206
return self.dbus_object_path # is already a dbus.ObjectPath
2207
1104
2208
# Secret = property
1105
@dbus_service_property(_interface, signature=u"ay",
1106
access=u"write", byte_arrays=True)
2209
@dbus_annotations(
2210
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2211
"invalidates"})
2212
@dbus_service_property(_interface,
2213
signature="ay",
2214
access="write",
2215
byte_arrays=True)
1107
2216
def Secret_dbus_property(self, value):
1108
self.secret = str(value)
1109
2217
self.secret = bytes(value)
2218
1110
2219
del _interface
1111
2220
1112
2221
1113
2222
class ProxyClient(object):
1114
def __init__(self, child_pipe, fpr, address):
2223
def __init__(self, child_pipe, key_id, fpr, address):
1115
2224
self._pipe = child_pipe
1116
self._pipe.send(('init', fpr, address))
2225
self._pipe.send(('init', key_id, fpr, address))
1117
2226
if not self._pipe.recv():
1118
raise KeyError()
2227
raise KeyError(key_id or fpr)
1119
2228
1120
2229
def __getattribute__(self, name):
1121
if(name == '_pipe'):
2230
if name == '_pipe':
1122
2231
return super(ProxyClient, self).__getattribute__(name)
1123
2232
self._pipe.send(('getattr', name))
1124
2233
data = self._pipe.recv()
1125
2234
if data[0] == 'data':
1126
2235
return data[1]
1127
2236
if data[0] == 'function':
2237
1128
2238
def func(*args, **kwargs):
1129
2239
self._pipe.send(('funcall', name, args, kwargs))
1130
2240
return self._pipe.recv()[1]
2241
1131
2242
return func
1132
2243
1133
2244
def __setattr__(self, name, value):
1134
if(name == '_pipe'):
2245
if name == '_pipe':
1135
2246
return super(ProxyClient, self).__setattr__(name, value)
1136
2247
self._pipe.send(('setattr', name, value))
1137
2248
1138
2249
1139
2250
class ClientHandler(socketserver.BaseRequestHandler, object):
1140
2251
"""A class to handle client connections.
1141
2252
1142
2253
Instantiated once for each connection to handle it.
1143
2254
Note: This will run in its own forked process."""
1144
2255
1145
2256
def handle(self):
1146
2257
with contextlib.closing(self.server.child_pipe) as child_pipe:
1147
logger.info(u"TCP connection from: %s",
1148
unicode(self.client_address))
1149
logger.debug(u"Pipe FD: %d",
2258
logger.info("TCP connection from: %s",
2259
str(self.client_address))
2260
logger.debug("Pipe FD: %d",
1150
2261
self.server.child_pipe.fileno())
1151
2262
1152
session = (gnutls.connection
1153
.ClientSession(self.request,
1154
gnutls.connection
1155
.X509Credentials()))
1156
1157
# Note: gnutls.connection.X509Credentials is really a
1158
# generic GnuTLS certificate credentials object so long as
1159
# no X.509 keys are added to it. Therefore, we can use it
1160
# here despite using OpenPGP certificates.
1161
1162
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1163
# u"+AES-256-CBC", u"+SHA1",
1164
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1165
# u"+DHE-DSS"))
2263
session = gnutls.ClientSession(self.request)
2264
2265
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2266
# "+AES-256-CBC", "+SHA1",
2267
# "+COMP-NULL", "+CTYPE-OPENPGP",
2268
# "+DHE-DSS"))
1166
2269
# Use a fallback default, since this MUST be set.
1167
2270
priority = self.server.gnutls_priority
1168
2271
if priority is None:
1169
priority = u"NORMAL"
1170
(gnutls.library.functions
1171
.gnutls_priority_set_direct(session._c_object,
1172
priority, None))
2272
priority = "NORMAL"
2273
gnutls.priority_set_direct(session._c_object,
2274
priority.encode("utf-8"),
2275
None)
1173
2276
1174
2277
# Start communication using the Mandos protocol
1175
2278
# Get protocol number
1176
2279
line = self.request.makefile().readline()
1177
logger.debug(u"Protocol version: %r", line)
2280
logger.debug("Protocol version: %r", line)
1178
2281
try:
1179
2282
if int(line.strip().split()[0]) > 1:
1180
raise RuntimeError
1181
except (ValueError, IndexError, RuntimeError), error:
1182
logger.error(u"Unknown protocol version: %s", error)
2283
raise RuntimeError(line)
2284
except (ValueError, IndexError, RuntimeError) as error:
2285
logger.error("Unknown protocol version: %s", error)
1183
2286
return
1184
2287
1185
2288
# Start GnuTLS connection
1186
2289
try:
1187
2290
session.handshake()
1188
except gnutls.errors.GNUTLSError, error:
1189
logger.warning(u"Handshake failed: %s", error)
2291
except gnutls.Error as error:
2292
logger.warning("Handshake failed: %s", error)
1190
2293
# Do not run session.bye() here: the session is not
1191
2294
# established. Just abandon the request.
1192
2295
return
1193
logger.debug(u"Handshake succeeded")
2296
logger.debug("Handshake succeeded")
1194
2297
1195
2298
approval_required = False
1196
2299
try:
1197
try:
1198
fpr = self.fingerprint(self.peer_certificate
1199
(session))
1200
except (TypeError, gnutls.errors.GNUTLSError), error:
1201
logger.warning(u"Bad certificate: %s", error)
1202
return
1203
logger.debug(u"Fingerprint: %s", fpr)
1204
1205
try:
1206
client = ProxyClient(child_pipe, fpr,
2300
if gnutls.has_rawpk:
2301
fpr = ""
2302
try:
2303
key_id = self.key_id(
2304
self.peer_certificate(session))
2305
except (TypeError, gnutls.Error) as error:
2306
logger.warning("Bad certificate: %s", error)
2307
return
2308
logger.debug("Key ID: %s", key_id)
2309
2310
else:
2311
key_id = ""
2312
try:
2313
fpr = self.fingerprint(
2314
self.peer_certificate(session))
2315
except (TypeError, gnutls.Error) as error:
2316
logger.warning("Bad certificate: %s", error)
2317
return
2318
logger.debug("Fingerprint: %s", fpr)
2319
2320
try:
2321
client = ProxyClient(child_pipe, key_id, fpr,
1207
2322
self.client_address)
1208
2323
except KeyError:
1209
2324
return
1210
2325
1211
2326
if client.approval_delay:
1212
2327
delay = client.approval_delay
1213
2328
client.approvals_pending += 1
1214
2329
approval_required = True
1215
2330
1216
2331
while True:
1217
2332
if not client.enabled:
1218
logger.warning(u"Client %s is disabled",
1219
client.name)
2333
logger.info("Client %s is disabled",
2334
client.name)
1220
2335
if self.server.use_dbus:
1221
2336
# Emit D-Bus signal
1222
client.Rejected("Disabled")
2337
client.Rejected("Disabled")
1223
2338
return
1224
1225
if client._approved or not client.approval_delay:
1226
#We are approved or approval is disabled
2339
2340
if client.approved or not client.approval_delay:
2341
# We are approved or approval is disabled
1227
2342
break
1228
elif client._approved is None:
1229
logger.info(u"Client %s needs approval",
2343
elif client.approved is None:
2344
logger.info("Client %s needs approval",
1230
2345
client.name)
1231
2346
if self.server.use_dbus:
1232
2347
# Emit D-Bus signal
1233
2348
client.NeedApproval(
1234
client.approval_delay_milliseconds(),
1235
client.approved_by_default)
2349
client.approval_delay.total_seconds()
2350
* 1000, client.approved_by_default)
1236
2351
else:
1237
logger.warning(u"Client %s was not approved",
2352
logger.warning("Client %s was not approved",
1238
2353
client.name)
1239
2354
if self.server.use_dbus:
1240
2355
# Emit D-Bus signal
1241
2356
client.Rejected("Denied")
1242
2357
return
1243
1244
#wait until timeout or approved
1245
#x = float(client._timedelta_to_milliseconds(delay))
2358
2359
# wait until timeout or approved
1246
2360
time = datetime.datetime.now()
1247
2361
client.changedstate.acquire()
1248
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
2362
client.changedstate.wait(delay.total_seconds())
1249
2363
client.changedstate.release()
1250
2364
time2 = datetime.datetime.now()
1251
2365
if (time2 - time) >= delay:
1261
2375
break
1262
2376
else:
1263
2377
delay -= time2 - time
1264
1265
sent_size = 0
1266
while sent_size < len(client.secret):
1267
try:
1268
sent = session.send(client.secret[sent_size:])
1269
except (gnutls.errors.GNUTLSError), error:
1270
logger.warning("gnutls send failed")
1271
return
1272
logger.debug(u"Sent: %d, remaining: %d",
1273
sent, len(client.secret)
1274
- (sent_size + sent))
1275
sent_size += sent
1276
1277
logger.info(u"Sending secret to %s", client.name)
1278
# bump the timeout as if seen
1279
client.checked_ok()
2378
2379
try:
2380
session.send(client.secret)
2381
except gnutls.Error as error:
2382
logger.warning("gnutls send failed",
2383
exc_info=error)
2384
return
2385
2386
logger.info("Sending secret to %s", client.name)
2387
# bump the timeout using extended_timeout
2388
client.bump_timeout(client.extended_timeout)
1280
2389
if self.server.use_dbus:
1281
2390
# Emit D-Bus signal
1282
2391
client.GotSecret()
1283
2392
1284
2393
finally:
1285
2394
if approval_required:
1286
2395
client.approvals_pending -= 1
1287
2396
try:
1288
2397
session.bye()
1289
except (gnutls.errors.GNUTLSError), error:
1290
logger.warning("GnuTLS bye failed")
1291
2398
except gnutls.Error as error:
2399
logger.warning("GnuTLS bye failed",
2400
exc_info=error)
2401
1292
2402
@staticmethod
1293
2403
def peer_certificate(session):
1294
"Return the peer's OpenPGP certificate as a bytestring"
1295
# If not an OpenPGP certificate...
1296
if (gnutls.library.functions
1297
.gnutls_certificate_type_get(session._c_object)
1298
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1299
# ...do the normal thing
1300
return session.peer_certificate
2404
"Return the peer's certificate as a bytestring"
2405
try:
2406
cert_type = gnutls.certificate_type_get2(session._c_object,
2407
gnutls.CTYPE_PEERS)
2408
except AttributeError:
2409
cert_type = gnutls.certificate_type_get(session._c_object)
2410
if gnutls.has_rawpk:
2411
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2412
else:
2413
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2414
# If not a valid certificate type...
2415
if cert_type not in valid_cert_types:
2416
logger.info("Cert type %r not in %r", cert_type,
2417
valid_cert_types)
2418
# ...return invalid data
2419
return b""
1301
2420
list_size = ctypes.c_uint(1)
1302
cert_list = (gnutls.library.functions
1303
.gnutls_certificate_get_peers
2421
cert_list = (gnutls.certificate_get_peers
1304
2422
(session._c_object, ctypes.byref(list_size)))
1305
2423
if not bool(cert_list) and list_size.value != 0:
1306
raise gnutls.errors.GNUTLSError(u"error getting peer"
1307
u" certificate")
2424
raise gnutls.Error("error getting peer certificate")
1308
2425
if list_size.value == 0:
1309
2426
return None
1310
2427
cert = cert_list[0]
1311
2428
return ctypes.string_at(cert.data, cert.size)
1312
2429
2430
@staticmethod
2431
def key_id(certificate):
2432
"Convert a certificate bytestring to a hexdigit key ID"
2433
# New GnuTLS "datum" with the public key
2434
datum = gnutls.datum_t(
2435
ctypes.cast(ctypes.c_char_p(certificate),
2436
ctypes.POINTER(ctypes.c_ubyte)),
2437
ctypes.c_uint(len(certificate)))
2438
# XXX all these need to be created in the gnutls "module"
2439
# New empty GnuTLS certificate
2440
pubkey = gnutls.pubkey_t()
2441
gnutls.pubkey_init(ctypes.byref(pubkey))
2442
# Import the raw public key into the certificate
2443
gnutls.pubkey_import(pubkey,
2444
ctypes.byref(datum),
2445
gnutls.X509_FMT_DER)
2446
# New buffer for the key ID
2447
buf = ctypes.create_string_buffer(32)
2448
buf_len = ctypes.c_size_t(len(buf))
2449
# Get the key ID from the raw public key into the buffer
2450
gnutls.pubkey_get_key_id(pubkey,
2451
gnutls.KEYID_USE_SHA256,
2452
ctypes.cast(ctypes.byref(buf),
2453
ctypes.POINTER(ctypes.c_ubyte)),
2454
ctypes.byref(buf_len))
2455
# Deinit the certificate
2456
gnutls.pubkey_deinit(pubkey)
2457
2458
# Convert the buffer to a Python bytestring
2459
key_id = ctypes.string_at(buf, buf_len.value)
2460
# Convert the bytestring to hexadecimal notation
2461
hex_key_id = binascii.hexlify(key_id).upper()
2462
return hex_key_id
2463
1313
2464
@staticmethod
1314
2465
def fingerprint(openpgp):
1315
2466
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1316
2467
# New GnuTLS "datum" with the OpenPGP public key
1317
datum = (gnutls.library.types
1318
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1319
ctypes.POINTER
1320
(ctypes.c_ubyte)),
1321
ctypes.c_uint(len(openpgp))))
2468
datum = gnutls.datum_t(
2469
ctypes.cast(ctypes.c_char_p(openpgp),
2470
ctypes.POINTER(ctypes.c_ubyte)),
2471
ctypes.c_uint(len(openpgp)))
1322
2472
# New empty GnuTLS certificate
1323
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1324
(gnutls.library.functions
1325
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2473
crt = gnutls.openpgp_crt_t()
2474
gnutls.openpgp_crt_init(ctypes.byref(crt))
1326
2475
# Import the OpenPGP public key into the certificate
1327
(gnutls.library.functions
1328
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1329
gnutls.library.constants
1330
.GNUTLS_OPENPGP_FMT_RAW))
2476
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2477
gnutls.OPENPGP_FMT_RAW)
1331
2478
# Verify the self signature in the key
1332
2479
crtverify = ctypes.c_uint()
1333
(gnutls.library.functions
1334
.gnutls_openpgp_crt_verify_self(crt, 0,
1335
ctypes.byref(crtverify)))
2480
gnutls.openpgp_crt_verify_self(crt, 0,
2481
ctypes.byref(crtverify))
1336
2482
if crtverify.value != 0:
1337
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1338
raise (gnutls.errors.CertificateSecurityError
1339
(u"Verify failed"))
2483
gnutls.openpgp_crt_deinit(crt)
2484
raise gnutls.CertificateSecurityError(code
2485
=crtverify.value)
1340
2486
# New buffer for the fingerprint
1341
2487
buf = ctypes.create_string_buffer(20)
1342
2488
buf_len = ctypes.c_size_t()
1343
2489
# Get the fingerprint from the certificate into the buffer
1344
(gnutls.library.functions
1345
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1346
ctypes.byref(buf_len)))
2490
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2491
ctypes.byref(buf_len))
1347
2492
# Deinit the certificate
1348
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2493
gnutls.openpgp_crt_deinit(crt)
1349
2494
# Convert the buffer to a Python bytestring
1350
2495
fpr = ctypes.string_at(buf, buf_len.value)
1351
2496
# Convert the bytestring to hexadecimal notation
1352
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
2497
hex_fpr = binascii.hexlify(fpr).upper()
1353
2498
return hex_fpr
1354
2499
1355
2500
1356
2501
class MultiprocessingMixIn(object):
1357
2502
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2503
1358
2504
def sub_process_main(self, request, address):
1359
2505
try:
1360
2506
self.finish_request(request, address)
1361
except:
2507
except Exception:
1362
2508
self.handle_error(request, address)
1363
2509
self.close_request(request)
1364
2510
1365
2511
def process_request(self, request, address):
1366
2512
"""Start a new process to process the request."""
1367
multiprocessing.Process(target = self.sub_process_main,
1368
args = (request, address)).start()
2513
proc = multiprocessing.Process(target=self.sub_process_main,
2514
args=(request, address))
2515
proc.start()
2516
return proc
2517
1369
2518
1370
2519
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1371
2520
""" adds a pipe to the MixIn """
2521
1372
2522
def process_request(self, request, client_address):
1373
2523
"""Overrides and wraps the original process_request().
1374
2524
1375
2525
This function creates a new pipe in self.pipe
1376
2526
"""
1377
2527
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1378
2528
1379
super(MultiprocessingMixInWithPipe,
1380
self).process_request(request, client_address)
2529
proc = MultiprocessingMixIn.process_request(self, request,
2530
client_address)
1381
2531
self.child_pipe.close()
1382
self.add_pipe(parent_pipe)
2532
self.add_pipe(parent_pipe, proc)
1383
2533
1384
def add_pipe(self, parent_pipe):
2534
def add_pipe(self, parent_pipe, proc):
1385
2535
"""Dummy function; override as necessary"""
1386
pass
2536
raise NotImplementedError()
2537
1387
2538
1388
2539
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1389
2540
socketserver.TCPServer, object):
1390
2541
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1391
2542
1392
2543
Attributes:
1393
2544
enabled: Boolean; whether this server is activated yet
1394
2545
interface: None or a network interface name (string)
1395
2546
use_ipv6: Boolean; to use IPv6 or not
1396
2547
"""
2548
1397
2549
def __init__(self, server_address, RequestHandlerClass,
1398
interface=None, use_ipv6=True):
2550
interface=None,
2551
use_ipv6=True,
2552
socketfd=None):
2553
"""If socketfd is set, use that file descriptor instead of
2554
creating a new one with socket.socket().
2555
"""
1399
2556
self.interface = interface
1400
2557
if use_ipv6:
1401
2558
self.address_family = socket.AF_INET6
2559
if socketfd is not None:
2560
# Save the file descriptor
2561
self.socketfd = socketfd
2562
# Save the original socket.socket() function
2563
self.socket_socket = socket.socket
2564
2565
# To implement --socket, we monkey patch socket.socket.
2566
#
2567
# (When socketserver.TCPServer is a new-style class, we
2568
# could make self.socket into a property instead of monkey
2569
# patching socket.socket.)
2570
#
2571
# Create a one-time-only replacement for socket.socket()
2572
@functools.wraps(socket.socket)
2573
def socket_wrapper(*args, **kwargs):
2574
# Restore original function so subsequent calls are
2575
# not affected.
2576
socket.socket = self.socket_socket
2577
del self.socket_socket
2578
# This time only, return a new socket object from the
2579
# saved file descriptor.
2580
return socket.fromfd(self.socketfd, *args, **kwargs)
2581
# Replace socket.socket() function with wrapper
2582
socket.socket = socket_wrapper
2583
# The socketserver.TCPServer.__init__ will call
2584
# socket.socket(), which might be our replacement,
2585
# socket_wrapper(), if socketfd was set.
1402
2586
socketserver.TCPServer.__init__(self, server_address,
1403
2587
RequestHandlerClass)
2588
1404
2589
def server_bind(self):
1405
2590
"""This overrides the normal server_bind() function
1406
2591
to bind to an interface if one was specified, and also NOT to
1407
2592
bind to an address or port if they were not specified."""
2593
global SO_BINDTODEVICE
1408
2594
if self.interface is not None:
1409
2595
if SO_BINDTODEVICE is None:
1410
logger.error(u"SO_BINDTODEVICE does not exist;"
1411
u" cannot bind to interface %s",
1412
self.interface)
1413
else:
1414
try:
1415
self.socket.setsockopt(socket.SOL_SOCKET,
1416
SO_BINDTODEVICE,
1417
str(self.interface
1418
+ u'\0'))
1419
except socket.error, error:
1420
if error[0] == errno.EPERM:
1421
logger.error(u"No permission to"
1422
u" bind to interface %s",
1423
self.interface)
1424
elif error[0] == errno.ENOPROTOOPT:
1425
logger.error(u"SO_BINDTODEVICE not available;"
1426
u" cannot bind to interface %s",
1427
self.interface)
1428
else:
1429
raise
2596
# Fall back to a hard-coded value which seems to be
2597
# common enough.
2598
logger.warning("SO_BINDTODEVICE not found, trying 25")
2599
SO_BINDTODEVICE = 25
2600
try:
2601
self.socket.setsockopt(
2602
socket.SOL_SOCKET, SO_BINDTODEVICE,
2603
(self.interface + "\0").encode("utf-8"))
2604
except socket.error as error:
2605
if error.errno == errno.EPERM:
2606
logger.error("No permission to bind to"
2607
" interface %s", self.interface)
2608
elif error.errno == errno.ENOPROTOOPT:
2609
logger.error("SO_BINDTODEVICE not available;"
2610
" cannot bind to interface %s",
2611
self.interface)
2612
elif error.errno == errno.ENODEV:
2613
logger.error("Interface %s does not exist,"
2614
" cannot bind", self.interface)
2615
else:
2616
raise
1430
2617
# Only bind(2) the socket if we really need to.
1431
2618
if self.server_address[0] or self.server_address[1]:
1432
2619
if not self.server_address[0]:
1433
2620
if self.address_family == socket.AF_INET6:
1434
any_address = u"::" # in6addr_any
2621
any_address = "::" # in6addr_any
1435
2622
else:
1436
any_address = socket.INADDR_ANY
2623
any_address = "0.0.0.0" # INADDR_ANY
1437
2624
self.server_address = (any_address,
1438
2625
self.server_address[1])
1439
2626
elif not self.server_address[1]:
1440
self.server_address = (self.server_address[0],
1441
0)
2627
self.server_address = (self.server_address[0], 0)
1442
2628
# if self.interface:
1443
2629
# self.server_address = (self.server_address[0],
1444
2630
# 0, # port
1450
2636
1451
2637
class MandosServer(IPv6_TCPServer):
1452
2638
"""Mandos server.
1453
2639
1454
2640
Attributes:
1455
2641
clients: set of Client objects
1456
2642
gnutls_priority GnuTLS priority string
1457
2643
use_dbus: Boolean; to emit D-Bus signals or not
1458
1459
Assumes a gobject.MainLoop event loop.
2644
2645
Assumes a GLib.MainLoop event loop.
1460
2646
"""
2647
1461
2648
def __init__(self, server_address, RequestHandlerClass,
1462
interface=None, use_ipv6=True, clients=None,
1463
gnutls_priority=None, use_dbus=True):
2649
interface=None,
2650
use_ipv6=True,
2651
clients=None,
2652
gnutls_priority=None,
2653
use_dbus=True,
2654
socketfd=None):
1464
2655
self.enabled = False
1465
2656
self.clients = clients
1466
2657
if self.clients is None:
1467
self.clients = set()
2658
self.clients = {}
1468
2659
self.use_dbus = use_dbus
1469
2660
self.gnutls_priority = gnutls_priority
1470
2661
IPv6_TCPServer.__init__(self, server_address,
1471
2662
RequestHandlerClass,
1472
interface = interface,
1473
use_ipv6 = use_ipv6)
2663
interface=interface,
2664
use_ipv6=use_ipv6,
2665
socketfd=socketfd)
2666
1474
2667
def server_activate(self):
1475
2668
if self.enabled:
1476
2669
return socketserver.TCPServer.server_activate(self)
2670
1477
2671
def enable(self):
1478
2672
self.enabled = True
1479
def add_pipe(self, parent_pipe):
2673
2674
def add_pipe(self, parent_pipe, proc):
1480
2675
# Call "handle_ipc" for both data and EOF events
1481
gobject.io_add_watch(parent_pipe.fileno(),
1482
gobject.IO_IN | gobject.IO_HUP,
1483
functools.partial(self.handle_ipc,
1484
parent_pipe = parent_pipe))
1485
1486
def handle_ipc(self, source, condition, parent_pipe=None,
2676
GLib.io_add_watch(
2677
parent_pipe.fileno(),
2678
GLib.IO_IN | GLib.IO_HUP,
2679
functools.partial(self.handle_ipc,
2680
parent_pipe=parent_pipe,
2681
proc=proc))
2682
2683
def handle_ipc(self, source, condition,
2684
parent_pipe=None,
2685
proc=None,
1487
2686
client_object=None):
1488
condition_names = {
1489
gobject.IO_IN: u"IN", # There is data to read.
1490
gobject.IO_OUT: u"OUT", # Data can be written (without
1491
# blocking).
1492
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1493
gobject.IO_ERR: u"ERR", # Error condition.
1494
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1495
# broken, usually for pipes and
1496
# sockets).
1497
}
1498
conditions_string = ' | '.join(name
1499
for cond, name in
1500
condition_names.iteritems()
1501
if cond & condition)
1502
# error or the other end of multiprocessing.Pipe has closed
1503
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2687
# error, or the other end of multiprocessing.Pipe has closed
2688
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2689
# Wait for other process to exit
2690
proc.join()
1504
2691
return False
1505
2692
1506
2693
# Read a request from the child
1507
2694
request = parent_pipe.recv()
1508
2695
command = request[0]
1509
2696
1510
2697
if command == 'init':
1511
fpr = request[1]
1512
address = request[2]
1513
1514
for c in self.clients:
1515
if c.fingerprint == fpr:
2698
key_id = request[1].decode("ascii")
2699
fpr = request[2].decode("ascii")
2700
address = request[3]
2701
2702
for c in self.clients.values():
2703
if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2704
continue
2705
if key_id and c.key_id == key_id:
2706
client = c
2707
break
2708
if fpr and c.fingerprint == fpr:
1516
2709
client = c
1517
2710
break
1518
2711
else:
1519
logger.warning(u"Client not found for fingerprint: %s, ad"
1520
u"dress: %s", fpr, address)
2712
logger.info("Client not found for key ID: %s, address"
2713
": %s", key_id or fpr, address)
1521
2714
if self.use_dbus:
1522
2715
# Emit D-Bus signal
1523
mandos_dbus_service.ClientNotFound(fpr, address)
2716
mandos_dbus_service.ClientNotFound(key_id or fpr,
2717
address[0])
1524
2718
parent_pipe.send(False)
1525
2719
return False
1526
1527
gobject.io_add_watch(parent_pipe.fileno(),
1528
gobject.IO_IN | gobject.IO_HUP,
1529
functools.partial(self.handle_ipc,
1530
parent_pipe = parent_pipe,
1531
client_object = client))
2720
2721
GLib.io_add_watch(
2722
parent_pipe.fileno(),
2723
GLib.IO_IN | GLib.IO_HUP,
2724
functools.partial(self.handle_ipc,
2725
parent_pipe=parent_pipe,
2726
proc=proc,
2727
client_object=client))
1532
2728
parent_pipe.send(True)
1533
# remove the old hook in favor of the new above hook on same fileno
2729
# remove the old hook in favor of the new above hook on
2730
# same fileno
1534
2731
return False
1535
2732
if command == 'funcall':
1536
2733
funcname = request[1]
1537
2734
args = request[2]
1538
2735
kwargs = request[3]
1539
1540
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
2736
2737
parent_pipe.send(('data', getattr(client_object,
2738
funcname)(*args,
2739
**kwargs)))
1541
2740
1542
2741
if command == 'getattr':
1543
2742
attrname = request[1]
1544
if callable(client_object.__getattribute__(attrname)):
1545
parent_pipe.send(('function',))
2743
if isinstance(client_object.__getattribute__(attrname),
2744
collections.Callable):
2745
parent_pipe.send(('function', ))
1546
2746
else:
1547
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
1548
2747
parent_pipe.send((
2748
'data', client_object.__getattribute__(attrname)))
2749
1549
2750
if command == 'setattr':
1550
2751
attrname = request[1]
1551
2752
value = request[2]
1554
2755
return True
1555
2756
1556
2757
2758
def rfc3339_duration_to_delta(duration):
2759
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2760
2761
>>> rfc3339_duration_to_delta("P7D")
2762
datetime.timedelta(7)
2763
>>> rfc3339_duration_to_delta("PT60S")
2764
datetime.timedelta(0, 60)
2765
>>> rfc3339_duration_to_delta("PT60M")
2766
datetime.timedelta(0, 3600)
2767
>>> rfc3339_duration_to_delta("PT24H")
2768
datetime.timedelta(1)
2769
>>> rfc3339_duration_to_delta("P1W")
2770
datetime.timedelta(7)
2771
>>> rfc3339_duration_to_delta("PT5M30S")
2772
datetime.timedelta(0, 330)
2773
>>> rfc3339_duration_to_delta("P1DT3M20S")
2774
datetime.timedelta(1, 200)
2775
"""
2776
2777
# Parsing an RFC 3339 duration with regular expressions is not
2778
# possible - there would have to be multiple places for the same
2779
# values, like seconds. The current code, while more esoteric, is
2780
# cleaner without depending on a parsing library. If Python had a
2781
# built-in library for parsing we would use it, but we'd like to
2782
# avoid excessive use of external libraries.
2783
2784
# New type for defining tokens, syntax, and semantics all-in-one
2785
Token = collections.namedtuple("Token", (
2786
"regexp", # To match token; if "value" is not None, must have
2787
# a "group" containing digits
2788
"value", # datetime.timedelta or None
2789
"followers")) # Tokens valid after this token
2790
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2791
# the "duration" ABNF definition in RFC 3339, Appendix A.
2792
token_end = Token(re.compile(r"$"), None, frozenset())
2793
token_second = Token(re.compile(r"(\d+)S"),
2794
datetime.timedelta(seconds=1),
2795
frozenset((token_end, )))
2796
token_minute = Token(re.compile(r"(\d+)M"),
2797
datetime.timedelta(minutes=1),
2798
frozenset((token_second, token_end)))
2799
token_hour = Token(re.compile(r"(\d+)H"),
2800
datetime.timedelta(hours=1),
2801
frozenset((token_minute, token_end)))
2802
token_time = Token(re.compile(r"T"),
2803
None,
2804
frozenset((token_hour, token_minute,
2805
token_second)))
2806
token_day = Token(re.compile(r"(\d+)D"),
2807
datetime.timedelta(days=1),
2808
frozenset((token_time, token_end)))
2809
token_month = Token(re.compile(r"(\d+)M"),
2810
datetime.timedelta(weeks=4),
2811
frozenset((token_day, token_end)))
2812
token_year = Token(re.compile(r"(\d+)Y"),
2813
datetime.timedelta(weeks=52),
2814
frozenset((token_month, token_end)))
2815
token_week = Token(re.compile(r"(\d+)W"),
2816
datetime.timedelta(weeks=1),
2817
frozenset((token_end, )))
2818
token_duration = Token(re.compile(r"P"), None,
2819
frozenset((token_year, token_month,
2820
token_day, token_time,
2821
token_week)))
2822
# Define starting values:
2823
# Value so far
2824
value = datetime.timedelta()
2825
found_token = None
2826
# Following valid tokens
2827
followers = frozenset((token_duration, ))
2828
# String left to parse
2829
s = duration
2830
# Loop until end token is found
2831
while found_token is not token_end:
2832
# Search for any currently valid tokens
2833
for token in followers:
2834
match = token.regexp.match(s)
2835
if match is not None:
2836
# Token found
2837
if token.value is not None:
2838
# Value found, parse digits
2839
factor = int(match.group(1), 10)
2840
# Add to value so far
2841
value += factor * token.value
2842
# Strip token from string
2843
s = token.regexp.sub("", s, 1)
2844
# Go to found token
2845
found_token = token
2846
# Set valid next tokens
2847
followers = found_token.followers
2848
break
2849
else:
2850
# No currently valid tokens were found
2851
raise ValueError("Invalid RFC 3339 duration: {!r}"
2852
.format(duration))
2853
# End token found
2854
return value
2855
2856
1557
2857
def string_to_delta(interval):
1558
2858
"""Parse a string and return a datetime.timedelta
1559
1560
>>> string_to_delta(u'7d')
2859
2860
>>> string_to_delta('7d')
1561
2861
datetime.timedelta(7)
1562
>>> string_to_delta(u'60s')
2862
>>> string_to_delta('60s')
1563
2863
datetime.timedelta(0, 60)
1564
>>> string_to_delta(u'60m')
2864
>>> string_to_delta('60m')
1565
2865
datetime.timedelta(0, 3600)
1566
>>> string_to_delta(u'24h')
2866
>>> string_to_delta('24h')
1567
2867
datetime.timedelta(1)
1568
>>> string_to_delta(u'1w')
2868
>>> string_to_delta('1w')
1569
2869
datetime.timedelta(7)
1570
>>> string_to_delta(u'5m 30s')
2870
>>> string_to_delta('5m 30s')
1571
2871
datetime.timedelta(0, 330)
1572
2872
"""
2873
2874
try:
2875
return rfc3339_duration_to_delta(interval)
2876
except ValueError:
2877
pass
2878
1573
2879
timevalue = datetime.timedelta(0)
1574
2880
for s in interval.split():
1575
2881
try:
1576
suffix = unicode(s[-1])
2882
suffix = s[-1]
1577
2883
value = int(s[:-1])
1578
if suffix == u"d":
2884
if suffix == "d":
1579
2885
delta = datetime.timedelta(value)
1580
elif suffix == u"s":
2886
elif suffix == "s":
1581
2887
delta = datetime.timedelta(0, value)
1582
elif suffix == u"m":
2888
elif suffix == "m":
1583
2889
delta = datetime.timedelta(0, 0, 0, 0, value)
1584
elif suffix == u"h":
2890
elif suffix == "h":
1585
2891
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1586
elif suffix == u"w":
2892
elif suffix == "w":
1587
2893
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1588
2894
else:
1589
raise ValueError(u"Unknown suffix %r" % suffix)
1590
except (ValueError, IndexError), e:
1591
raise ValueError(e.message)
2895
raise ValueError("Unknown suffix {!r}".format(suffix))
2896
except IndexError as e:
2897
raise ValueError(*(e.args))
1592
2898
timevalue += delta
1593
2899
return timevalue
1594
2900
1595
2901
1596
def if_nametoindex(interface):
1597
"""Call the C function if_nametoindex(), or equivalent
1598
1599
Note: This function cannot accept a unicode string."""
1600
global if_nametoindex
1601
try:
1602
if_nametoindex = (ctypes.cdll.LoadLibrary
1603
(ctypes.util.find_library(u"c"))
1604
.if_nametoindex)
1605
except (OSError, AttributeError):
1606
logger.warning(u"Doing if_nametoindex the hard way")
1607
def if_nametoindex(interface):
1608
"Get an interface index the hard way, i.e. using fcntl()"
1609
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1610
with contextlib.closing(socket.socket()) as s:
1611
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1612
struct.pack(str(u"16s16x"),
1613
interface))
1614
interface_index = struct.unpack(str(u"I"),
1615
ifreq[16:20])[0]
1616
return interface_index
1617
return if_nametoindex(interface)
1618
1619
1620
def daemon(nochdir = False, noclose = False):
2902
def daemon(nochdir=False, noclose=False):
1621
2903
"""See daemon(3). Standard BSD Unix function.
1622
2904
1623
2905
This should really exist as os.daemon, but it doesn't (yet)."""
1624
2906
if os.fork():
1625
2907
sys.exit()
1626
2908
os.setsid()
1627
2909
if not nochdir:
1628
os.chdir(u"/")
2910
os.chdir("/")
1629
2911
if os.fork():
1630
2912
sys.exit()
1631
2913
if not noclose:
1632
2914
# Close all standard open file descriptors
1633
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2915
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1634
2916
if not stat.S_ISCHR(os.fstat(null).st_mode):
1635
2917
raise OSError(errno.ENODEV,
1636
u"%s not a character device"
1637
% os.path.devnull)
2918
"{} not a character device"
2919
.format(os.devnull))
1638
2920
os.dup2(null, sys.stdin.fileno())
1639
2921
os.dup2(null, sys.stdout.fileno())
1640
2922
os.dup2(null, sys.stderr.fileno())
1643
2925
1644
2926
1645
2927
def main():
1646
2928
1647
2929
##################################################################
1648
2930
# Parsing of options, both command line and config file
1649
1650
parser = optparse.OptionParser(version = "%%prog %s" % version)
1651
parser.add_option("-i", u"--interface", type=u"string",
1652
metavar="IF", help=u"Bind to interface IF")
1653
parser.add_option("-a", u"--address", type=u"string",
1654
help=u"Address to listen for requests on")
1655
parser.add_option("-p", u"--port", type=u"int",
1656
help=u"Port number to receive requests on")
1657
parser.add_option("--check", action=u"store_true",
1658
help=u"Run self-test")
1659
parser.add_option("--debug", action=u"store_true",
1660
help=u"Debug mode; run in foreground and log to"
1661
u" terminal")
1662
parser.add_option("--debuglevel", type=u"string", metavar="Level",
1663
help=u"Debug level for stdout output")
1664
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1665
u" priority string (see GnuTLS documentation)")
1666
parser.add_option("--servicename", type=u"string",
1667
metavar=u"NAME", help=u"Zeroconf service name")
1668
parser.add_option("--configdir", type=u"string",
1669
default=u"/etc/mandos", metavar=u"DIR",
1670
help=u"Directory to search for configuration"
1671
u" files")
1672
parser.add_option("--no-dbus", action=u"store_false",
1673
dest=u"use_dbus", help=u"Do not provide D-Bus"
1674
u" system bus interface")
1675
parser.add_option("--no-ipv6", action=u"store_false",
1676
dest=u"use_ipv6", help=u"Do not use IPv6")
1677
options = parser.parse_args()[0]
1678
2931
2932
parser = argparse.ArgumentParser()
2933
parser.add_argument("-v", "--version", action="version",
2934
version="%(prog)s {}".format(version),
2935
help="show version number and exit")
2936
parser.add_argument("-i", "--interface", metavar="IF",
2937
help="Bind to interface IF")
2938
parser.add_argument("-a", "--address",
2939
help="Address to listen for requests on")
2940
parser.add_argument("-p", "--port", type=int,
2941
help="Port number to receive requests on")
2942
parser.add_argument("--check", action="store_true",
2943
help="Run self-test")
2944
parser.add_argument("--debug", action="store_true",
2945
help="Debug mode; run in foreground and log"
2946
" to terminal", default=None)
2947
parser.add_argument("--debuglevel", metavar="LEVEL",
2948
help="Debug level for stdout output")
2949
parser.add_argument("--priority", help="GnuTLS"
2950
" priority string (see GnuTLS documentation)")
2951
parser.add_argument("--servicename",
2952
metavar="NAME", help="Zeroconf service name")
2953
parser.add_argument("--configdir",
2954
default="/etc/mandos", metavar="DIR",
2955
help="Directory to search for configuration"
2956
" files")
2957
parser.add_argument("--no-dbus", action="store_false",
2958
dest="use_dbus", help="Do not provide D-Bus"
2959
" system bus interface", default=None)
2960
parser.add_argument("--no-ipv6", action="store_false",
2961
dest="use_ipv6", help="Do not use IPv6",
2962
default=None)
2963
parser.add_argument("--no-restore", action="store_false",
2964
dest="restore", help="Do not restore stored"
2965
" state", default=None)
2966
parser.add_argument("--socket", type=int,
2967
help="Specify a file descriptor to a network"
2968
" socket to use instead of creating one")
2969
parser.add_argument("--statedir", metavar="DIR",
2970
help="Directory to save/restore state in")
2971
parser.add_argument("--foreground", action="store_true",
2972
help="Run in foreground", default=None)
2973
parser.add_argument("--no-zeroconf", action="store_false",
2974
dest="zeroconf", help="Do not use Zeroconf",
2975
default=None)
2976
2977
options = parser.parse_args()
2978
1679
2979
if options.check:
1680
2980
import doctest
1681
doctest.testmod()
1682
sys.exit()
1683
2981
fail_count, test_count = doctest.testmod()
2982
sys.exit(os.EX_OK if fail_count == 0 else 1)
2983
1684
2984
# Default values for config file for server-global settings
1685
server_defaults = { u"interface": u"",
1686
u"address": u"",
1687
u"port": u"",
1688
u"debug": u"False",
1689
u"priority":
1690
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1691
u"servicename": u"Mandos",
1692
u"use_dbus": u"True",
1693
u"use_ipv6": u"True",
1694
u"debuglevel": u"",
1695
}
1696
2985
if gnutls.has_rawpk:
2986
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
2987
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
2988
else:
2989
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2990
":+SIGN-DSA-SHA256")
2991
server_defaults = {"interface": "",
2992
"address": "",
2993
"port": "",
2994
"debug": "False",
2995
"priority": priority,
2996
"servicename": "Mandos",
2997
"use_dbus": "True",
2998
"use_ipv6": "True",
2999
"debuglevel": "",
3000
"restore": "True",
3001
"socket": "",
3002
"statedir": "/var/lib/mandos",
3003
"foreground": "False",
3004
"zeroconf": "True",
3005
}
3006
del priority
3007
1697
3008
# Parse config file for server-global settings
1698
3009
server_config = configparser.SafeConfigParser(server_defaults)
1699
3010
del server_defaults
1700
server_config.read(os.path.join(options.configdir,
1701
u"mandos.conf"))
3011
server_config.read(os.path.join(options.configdir, "mandos.conf"))
1702
3012
# Convert the SafeConfigParser object to a dict
1703
3013
server_settings = server_config.defaults()
1704
3014
# Use the appropriate methods on the non-string config options
1705
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1706
server_settings[option] = server_config.getboolean(u"DEFAULT",
3015
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3016
"foreground", "zeroconf"):
3017
server_settings[option] = server_config.getboolean("DEFAULT",
1707
3018
option)
1708
3019
if server_settings["port"]:
1709
server_settings["port"] = server_config.getint(u"DEFAULT",
1710
u"port")
3020
server_settings["port"] = server_config.getint("DEFAULT",
3021
"port")
3022
if server_settings["socket"]:
3023
server_settings["socket"] = server_config.getint("DEFAULT",
3024
"socket")
3025
# Later, stdin will, and stdout and stderr might, be dup'ed
3026
# over with an opened os.devnull. But we don't want this to
3027
# happen with a supplied network socket.
3028
if 0 <= server_settings["socket"] <= 2:
3029
server_settings["socket"] = os.dup(server_settings
3030
["socket"])
1711
3031
del server_config
1712
3032
1713
3033
# Override the settings from the config file with command line
1714
3034
# options, if set.
1715
for option in (u"interface", u"address", u"port", u"debug",
1716
u"priority", u"servicename", u"configdir",
1717
u"use_dbus", u"use_ipv6", u"debuglevel"):
3035
for option in ("interface", "address", "port", "debug",
3036
"priority", "servicename", "configdir", "use_dbus",
3037
"use_ipv6", "debuglevel", "restore", "statedir",
3038
"socket", "foreground", "zeroconf"):
1718
3039
value = getattr(options, option)
1719
3040
if value is not None:
1720
3041
server_settings[option] = value
1721
3042
del options
1722
3043
# Force all strings to be unicode
1723
3044
for option in server_settings.keys():
1724
if type(server_settings[option]) is str:
1725
server_settings[option] = unicode(server_settings[option])
3045
if isinstance(server_settings[option], bytes):
3046
server_settings[option] = (server_settings[option]
3047
.decode("utf-8"))
3048
# Force all boolean options to be boolean
3049
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3050
"foreground", "zeroconf"):
3051
server_settings[option] = bool(server_settings[option])
3052
# Debug implies foreground
3053
if server_settings["debug"]:
3054
server_settings["foreground"] = True
1726
3055
# Now we have our good server settings in "server_settings"
1727
3056
1728
3057
##################################################################
1729
3058
3059
if (not server_settings["zeroconf"]
3060
and not (server_settings["port"]
3061
or server_settings["socket"] != "")):
3062
parser.error("Needs port or socket to work without Zeroconf")
3063
1730
3064
# For convenience
1731
debug = server_settings[u"debug"]
1732
debuglevel = server_settings[u"debuglevel"]
1733
use_dbus = server_settings[u"use_dbus"]
1734
use_ipv6 = server_settings[u"use_ipv6"]
1735
1736
if server_settings[u"servicename"] != u"Mandos":
1737
syslogger.setFormatter(logging.Formatter
1738
(u'Mandos (%s) [%%(process)d]:'
1739
u' %%(levelname)s: %%(message)s'
1740
% server_settings[u"servicename"]))
1741
3065
debug = server_settings["debug"]
3066
debuglevel = server_settings["debuglevel"]
3067
use_dbus = server_settings["use_dbus"]
3068
use_ipv6 = server_settings["use_ipv6"]
3069
stored_state_path = os.path.join(server_settings["statedir"],
3070
stored_state_file)
3071
foreground = server_settings["foreground"]
3072
zeroconf = server_settings["zeroconf"]
3073
3074
if debug:
3075
initlogger(debug, logging.DEBUG)
3076
else:
3077
if not debuglevel:
3078
initlogger(debug)
3079
else:
3080
level = getattr(logging, debuglevel.upper())
3081
initlogger(debug, level)
3082
3083
if server_settings["servicename"] != "Mandos":
3084
syslogger.setFormatter(
3085
logging.Formatter('Mandos ({}) [%(process)d]:'
3086
' %(levelname)s: %(message)s'.format(
3087
server_settings["servicename"])))
3088
1742
3089
# Parse config file with clients
1743
client_defaults = { u"timeout": u"1h",
1744
u"interval": u"5m",
1745
u"checker": u"fping -q -- %%(host)s",
1746
u"host": u"",
1747
u"approval_delay": u"0s",
1748
u"approval_duration": u"1s",
1749
}
1750
client_config = configparser.SafeConfigParser(client_defaults)
1751
client_config.read(os.path.join(server_settings[u"configdir"],
1752
u"clients.conf"))
1753
3090
client_config = configparser.SafeConfigParser(Client
3091
.client_defaults)
3092
client_config.read(os.path.join(server_settings["configdir"],
3093
"clients.conf"))
3094
1754
3095
global mandos_dbus_service
1755
3096
mandos_dbus_service = None
1756
1757
tcp_server = MandosServer((server_settings[u"address"],
1758
server_settings[u"port"]),
1759
ClientHandler,
1760
interface=(server_settings[u"interface"]
1761
or None),
1762
use_ipv6=use_ipv6,
1763
gnutls_priority=
1764
server_settings[u"priority"],
1765
use_dbus=use_dbus)
1766
pidfilename = u"/var/run/mandos.pid"
1767
try:
1768
pidfile = open(pidfilename, u"w")
1769
except IOError:
1770
logger.error(u"Could not open file %r", pidfilename)
1771
1772
try:
1773
uid = pwd.getpwnam(u"_mandos").pw_uid
1774
gid = pwd.getpwnam(u"_mandos").pw_gid
1775
except KeyError:
1776
try:
1777
uid = pwd.getpwnam(u"mandos").pw_uid
1778
gid = pwd.getpwnam(u"mandos").pw_gid
3097
3098
socketfd = None
3099
if server_settings["socket"] != "":
3100
socketfd = server_settings["socket"]
3101
tcp_server = MandosServer(
3102
(server_settings["address"], server_settings["port"]),
3103
ClientHandler,
3104
interface=(server_settings["interface"] or None),
3105
use_ipv6=use_ipv6,
3106
gnutls_priority=server_settings["priority"],
3107
use_dbus=use_dbus,
3108
socketfd=socketfd)
3109
if not foreground:
3110
pidfilename = "/run/mandos.pid"
3111
if not os.path.isdir("/run/."):
3112
pidfilename = "/var/run/mandos.pid"
3113
pidfile = None
3114
try:
3115
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3116
except IOError as e:
3117
logger.error("Could not open file %r", pidfilename,
3118
exc_info=e)
3119
3120
for name, group in (("_mandos", "_mandos"),
3121
("mandos", "mandos"),
3122
("nobody", "nogroup")):
3123
try:
3124
uid = pwd.getpwnam(name).pw_uid
3125
gid = pwd.getpwnam(group).pw_gid
3126
break
1779
3127
except KeyError:
1780
try:
1781
uid = pwd.getpwnam(u"nobody").pw_uid
1782
gid = pwd.getpwnam(u"nobody").pw_gid
1783
except KeyError:
1784
uid = 65534
1785
gid = 65534
3128
continue
3129
else:
3130
uid = 65534
3131
gid = 65534
1786
3132
try:
1787
3133
os.setgid(gid)
1788
3134
os.setuid(uid)
1789
except OSError, error:
1790
if error[0] != errno.EPERM:
1791
raise error
1792
1793
if not debug and not debuglevel:
1794
syslogger.setLevel(logging.WARNING)
1795
console.setLevel(logging.WARNING)
1796
if debuglevel:
1797
level = getattr(logging, debuglevel.upper())
1798
syslogger.setLevel(level)
1799
console.setLevel(level)
3135
if debug:
3136
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3137
gid))
3138
except OSError as error:
3139
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3140
.format(uid, gid, os.strerror(error.errno)))
3141
if error.errno != errno.EPERM:
3142
raise
1800
3143
1801
3144
if debug:
1802
3145
# Enable all possible GnuTLS debugging
1803
3146
1804
3147
# "Use a log level over 10 to enable all debugging options."
1805
3148
# - GnuTLS manual
1806
gnutls.library.functions.gnutls_global_set_log_level(11)
1807
1808
@gnutls.library.types.gnutls_log_func
3149
gnutls.global_set_log_level(11)
3150
3151
@gnutls.log_func
1809
3152
def debug_gnutls(level, string):
1810
logger.debug(u"GnuTLS: %s", string[:-1])
1811
1812
(gnutls.library.functions
1813
.gnutls_global_set_log_function(debug_gnutls))
1814
3153
logger.debug("GnuTLS: %s", string[:-1])
3154
3155
gnutls.global_set_log_function(debug_gnutls)
3156
1815
3157
# Redirect stdin so all checkers get /dev/null
1816
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3158
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1817
3159
os.dup2(null, sys.stdin.fileno())
1818
3160
if null > 2:
1819
3161
os.close(null)
1820
else:
1821
# No console logging
1822
logger.removeHandler(console)
1823
1824
3162
3163
# Need to fork before connecting to D-Bus
3164
if not foreground:
3165
# Close all input and output, do double fork, etc.
3166
daemon()
3167
3168
# multiprocessing will use threads, so before we use GLib we need
3169
# to inform GLib that threads will be used.
3170
GLib.threads_init()
3171
1825
3172
global main_loop
1826
3173
# From the Avahi example code
1827
DBusGMainLoop(set_as_default=True )
1828
main_loop = gobject.MainLoop()
3174
DBusGMainLoop(set_as_default=True)
3175
main_loop = GLib.MainLoop()
1829
3176
bus = dbus.SystemBus()
1830
3177
# End of Avahi example code
1831
3178
if use_dbus:
1832
3179
try:
1833
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
1834
bus, do_not_queue=True)
1835
except dbus.exceptions.NameExistsException, e:
1836
logger.error(unicode(e) + u", disabling D-Bus")
3180
bus_name = dbus.service.BusName("se.recompile.Mandos",
3181
bus,
3182
do_not_queue=True)
3183
old_bus_name = dbus.service.BusName(
3184
"se.bsnet.fukt.Mandos", bus,
3185
do_not_queue=True)
3186
except dbus.exceptions.DBusException as e:
3187
logger.error("Disabling D-Bus:", exc_info=e)
1837
3188
use_dbus = False
1838
server_settings[u"use_dbus"] = False
3189
server_settings["use_dbus"] = False
1839
3190
tcp_server.use_dbus = False
1840
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1841
service = AvahiService(name = server_settings[u"servicename"],
1842
servicetype = u"_mandos._tcp",
1843
protocol = protocol, bus = bus)
1844
if server_settings["interface"]:
1845
service.interface = (if_nametoindex
1846
(str(server_settings[u"interface"])))
3191
if zeroconf:
3192
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3193
service = AvahiServiceToSyslog(
3194
name=server_settings["servicename"],
3195
servicetype="_mandos._tcp",
3196
protocol=protocol,
3197
bus=bus)
3198
if server_settings["interface"]:
3199
service.interface = if_nametoindex(
3200
server_settings["interface"].encode("utf-8"))
1847
3201
1848
if not debug:
1849
# Close all input and output, do double fork, etc.
1850
daemon()
1851
1852
3202
global multiprocessing_manager
1853
3203
multiprocessing_manager = multiprocessing.Manager()
1854
3204
1855
3205
client_class = Client
1856
3206
if use_dbus:
1857
client_class = functools.partial(ClientDBus, bus = bus)
1858
def client_config_items(config, section):
1859
special_settings = {
1860
"approved_by_default":
1861
lambda: config.getboolean(section,
1862
"approved_by_default"),
1863
}
1864
for name, value in config.items(section):
3207
client_class = functools.partial(ClientDBus, bus=bus)
3208
3209
client_settings = Client.config_parser(client_config)
3210
old_client_settings = {}
3211
clients_data = {}
3212
3213
# This is used to redirect stdout and stderr for checker processes
3214
global wnull
3215
wnull = open(os.devnull, "w") # A writable /dev/null
3216
# Only used if server is running in foreground but not in debug
3217
# mode
3218
if debug or not foreground:
3219
wnull.close()
3220
3221
# Get client data and settings from last running state.
3222
if server_settings["restore"]:
3223
try:
3224
with open(stored_state_path, "rb") as stored_state:
3225
if sys.version_info.major == 2:
3226
clients_data, old_client_settings = pickle.load(
3227
stored_state)
3228
else:
3229
bytes_clients_data, bytes_old_client_settings = (
3230
pickle.load(stored_state, encoding="bytes"))
3231
# Fix bytes to strings
3232
# clients_data
3233
# .keys()
3234
clients_data = {(key.decode("utf-8")
3235
if isinstance(key, bytes)
3236
else key): value
3237
for key, value in
3238
bytes_clients_data.items()}
3239
del bytes_clients_data
3240
for key in clients_data:
3241
value = {(k.decode("utf-8")
3242
if isinstance(k, bytes) else k): v
3243
for k, v in
3244
clients_data[key].items()}
3245
clients_data[key] = value
3246
# .client_structure
3247
value["client_structure"] = [
3248
(s.decode("utf-8")
3249
if isinstance(s, bytes)
3250
else s) for s in
3251
value["client_structure"]]
3252
# .name & .host
3253
for k in ("name", "host"):
3254
if isinstance(value[k], bytes):
3255
value[k] = value[k].decode("utf-8")
3256
if not value.has_key("key_id"):
3257
value["key_id"] = ""
3258
elif not value.has_key("fingerprint"):
3259
value["fingerprint"] = ""
3260
# old_client_settings
3261
# .keys()
3262
old_client_settings = {
3263
(key.decode("utf-8")
3264
if isinstance(key, bytes)
3265
else key): value
3266
for key, value in
3267
bytes_old_client_settings.items()}
3268
del bytes_old_client_settings
3269
# .host
3270
for value in old_client_settings.values():
3271
if isinstance(value["host"], bytes):
3272
value["host"] = (value["host"]
3273
.decode("utf-8"))
3274
os.remove(stored_state_path)
3275
except IOError as e:
3276
if e.errno == errno.ENOENT:
3277
logger.warning("Could not load persistent state:"
3278
" {}".format(os.strerror(e.errno)))
3279
else:
3280
logger.critical("Could not load persistent state:",
3281
exc_info=e)
3282
raise
3283
except EOFError as e:
3284
logger.warning("Could not load persistent state: "
3285
"EOFError:",
3286
exc_info=e)
3287
3288
with PGPEngine() as pgp:
3289
for client_name, client in clients_data.items():
3290
# Skip removed clients
3291
if client_name not in client_settings:
3292
continue
3293
3294
# Decide which value to use after restoring saved state.
3295
# We have three different values: Old config file,
3296
# new config file, and saved state.
3297
# New config value takes precedence if it differs from old
3298
# config value, otherwise use saved state.
3299
for name, value in client_settings[client_name].items():
3300
try:
3301
# For each value in new config, check if it
3302
# differs from the old config value (Except for
3303
# the "secret" attribute)
3304
if (name != "secret"
3305
and (value !=
3306
old_client_settings[client_name][name])):
3307
client[name] = value
3308
except KeyError:
3309
pass
3310
3311
# Clients who has passed its expire date can still be
3312
# enabled if its last checker was successful. A Client
3313
# whose checker succeeded before we stored its state is
3314
# assumed to have successfully run all checkers during
3315
# downtime.
3316
if client["enabled"]:
3317
if datetime.datetime.utcnow() >= client["expires"]:
3318
if not client["last_checked_ok"]:
3319
logger.warning(
3320
"disabling client {} - Client never "
3321
"performed a successful checker".format(
3322
client_name))
3323
client["enabled"] = False
3324
elif client["last_checker_status"] != 0:
3325
logger.warning(
3326
"disabling client {} - Client last"
3327
" checker failed with error code"
3328
" {}".format(
3329
client_name,
3330
client["last_checker_status"]))
3331
client["enabled"] = False
3332
else:
3333
client["expires"] = (
3334
datetime.datetime.utcnow()
3335
+ client["timeout"])
3336
logger.debug("Last checker succeeded,"
3337
" keeping {} enabled".format(
3338
client_name))
1865
3339
try:
1866
yield (name, special_settings[name]())
1867
except KeyError:
1868
yield (name, value)
1869
1870
tcp_server.clients.update(set(
1871
client_class(name = section,
1872
config= dict(client_config_items(
1873
client_config, section)))
1874
for section in client_config.sections()))
3340
client["secret"] = pgp.decrypt(
3341
client["encrypted_secret"],
3342
client_settings[client_name]["secret"])
3343
except PGPError:
3344
# If decryption fails, we use secret from new settings
3345
logger.debug("Failed to decrypt {} old secret".format(
3346
client_name))
3347
client["secret"] = (client_settings[client_name]
3348
["secret"])
3349
3350
# Add/remove clients based on new changes made to config
3351
for client_name in (set(old_client_settings)
3352
- set(client_settings)):
3353
del clients_data[client_name]
3354
for client_name in (set(client_settings)
3355
- set(old_client_settings)):
3356
clients_data[client_name] = client_settings[client_name]
3357
3358
# Create all client objects
3359
for client_name, client in clients_data.items():
3360
tcp_server.clients[client_name] = client_class(
3361
name=client_name,
3362
settings=client,
3363
server_settings=server_settings)
3364
1875
3365
if not tcp_server.clients:
1876
logger.warning(u"No clients defined")
1877
1878
try:
1879
with pidfile:
3366
logger.warning("No clients defined")
3367
3368
if not foreground:
3369
if pidfile is not None:
1880
3370
pid = os.getpid()
1881
pidfile.write(str(pid) + "\n")
3371
try:
3372
with pidfile:
3373
print(pid, file=pidfile)
3374
except IOError:
3375
logger.error("Could not write to file %r with PID %d",
3376
pidfilename, pid)
1882
3377
del pidfile
1883
except IOError:
1884
logger.error(u"Could not write to file %r with PID %d",
1885
pidfilename, pid)
1886
except NameError:
1887
# "pidfile" was never created
1888
pass
1889
del pidfilename
1890
1891
if not debug:
1892
signal.signal(signal.SIGINT, signal.SIG_IGN)
1893
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1894
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1895
3378
del pidfilename
3379
3380
for termsig in (signal.SIGHUP, signal.SIGTERM):
3381
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3382
lambda: main_loop.quit() and False)
3383
1896
3384
if use_dbus:
1897
class MandosDBusService(dbus.service.Object):
3385
3386
@alternate_dbus_interfaces(
3387
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3388
class MandosDBusService(DBusObjectWithObjectManager):
1898
3389
"""A D-Bus proxy object"""
3390
1899
3391
def __init__(self):
1900
dbus.service.Object.__init__(self, bus, u"/")
1901
_interface = u"se.bsnet.fukt.Mandos"
1902
1903
@dbus.service.signal(_interface, signature=u"o")
3392
dbus.service.Object.__init__(self, bus, "/")
3393
3394
_interface = "se.recompile.Mandos"
3395
3396
@dbus.service.signal(_interface, signature="o")
1904
3397
def ClientAdded(self, objpath):
1905
3398
"D-Bus signal"
1906
3399
pass
1907
1908
@dbus.service.signal(_interface, signature=u"ss")
1909
def ClientNotFound(self, fingerprint, address):
3400
3401
@dbus.service.signal(_interface, signature="ss")
3402
def ClientNotFound(self, key_id, address):
1910
3403
"D-Bus signal"
1911
3404
pass
1912
1913
@dbus.service.signal(_interface, signature=u"os")
3405
3406
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3407
"true"})
3408
@dbus.service.signal(_interface, signature="os")
1914
3409
def ClientRemoved(self, objpath, name):
1915
3410
"D-Bus signal"
1916
3411
pass
1917
1918
@dbus.service.method(_interface, out_signature=u"ao")
3412
3413
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3414
"true"})
3415
@dbus.service.method(_interface, out_signature="ao")
1919
3416
def GetAllClients(self):
1920
3417
"D-Bus method"
1921
return dbus.Array(c.dbus_object_path
1922
for c in tcp_server.clients)
1923
3418
return dbus.Array(c.dbus_object_path for c in
3419
tcp_server.clients.values())
3420
3421
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3422
"true"})
1924
3423
@dbus.service.method(_interface,
1925
out_signature=u"a{oa{sv}}")
3424
out_signature="a{oa{sv}}")
1926
3425
def GetAllClientsWithProperties(self):
1927
3426
"D-Bus method"
1928
3427
return dbus.Dictionary(
1929
((c.dbus_object_path, c.GetAll(u""))
1930
for c in tcp_server.clients),
1931
signature=u"oa{sv}")
1932
1933
@dbus.service.method(_interface, in_signature=u"o")
3428
{c.dbus_object_path: c.GetAll(
3429
"se.recompile.Mandos.Client")
3430
for c in tcp_server.clients.values()},
3431
signature="oa{sv}")
3432
3433
@dbus.service.method(_interface, in_signature="o")
1934
3434
def RemoveClient(self, object_path):
1935
3435
"D-Bus method"
1936
for c in tcp_server.clients:
3436
for c in tcp_server.clients.values():
1937
3437
if c.dbus_object_path == object_path:
1938
tcp_server.clients.remove(c)
3438
del tcp_server.clients[c.name]
1939
3439
c.remove_from_connection()
1940
# Don't signal anything except ClientRemoved
3440
# Don't signal the disabling
1941
3441
c.disable(quiet=True)
1942
# Emit D-Bus signal
1943
self.ClientRemoved(object_path, c.name)
3442
# Emit D-Bus signal for removal
3443
self.client_removed_signal(c)
1944
3444
return
1945
3445
raise KeyError(object_path)
1946
3446
1947
3447
del _interface
1948
3448
3449
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3450
out_signature="a{oa{sa{sv}}}")
3451
def GetManagedObjects(self):
3452
"""D-Bus method"""
3453
return dbus.Dictionary(
3454
{client.dbus_object_path:
3455
dbus.Dictionary(
3456
{interface: client.GetAll(interface)
3457
for interface in
3458
client._get_all_interface_names()})
3459
for client in tcp_server.clients.values()})
3460
3461
def client_added_signal(self, client):
3462
"""Send the new standard signal and the old signal"""
3463
if use_dbus:
3464
# New standard signal
3465
self.InterfacesAdded(
3466
client.dbus_object_path,
3467
dbus.Dictionary(
3468
{interface: client.GetAll(interface)
3469
for interface in
3470
client._get_all_interface_names()}))
3471
# Old signal
3472
self.ClientAdded(client.dbus_object_path)
3473
3474
def client_removed_signal(self, client):
3475
"""Send the new standard signal and the old signal"""
3476
if use_dbus:
3477
# New standard signal
3478
self.InterfacesRemoved(
3479
client.dbus_object_path,
3480
client._get_all_interface_names())
3481
# Old signal
3482
self.ClientRemoved(client.dbus_object_path,
3483
client.name)
3484
1949
3485
mandos_dbus_service = MandosDBusService()
1950
3486
3487
# Save modules to variables to exempt the modules from being
3488
# unloaded before the function registered with atexit() is run.
3489
mp = multiprocessing
3490
wn = wnull
3491
1951
3492
def cleanup():
1952
3493
"Cleanup function; run on exit"
1953
service.cleanup()
1954
3494
if zeroconf:
3495
service.cleanup()
3496
3497
mp.active_children()
3498
wn.close()
3499
if not (tcp_server.clients or client_settings):
3500
return
3501
3502
# Store client before exiting. Secrets are encrypted with key
3503
# based on what config file has. If config file is
3504
# removed/edited, old secret will thus be unrecovable.
3505
clients = {}
3506
with PGPEngine() as pgp:
3507
for client in tcp_server.clients.values():
3508
key = client_settings[client.name]["secret"]
3509
client.encrypted_secret = pgp.encrypt(client.secret,
3510
key)
3511
client_dict = {}
3512
3513
# A list of attributes that can not be pickled
3514
# + secret.
3515
exclude = {"bus", "changedstate", "secret",
3516
"checker", "server_settings"}
3517
for name, typ in inspect.getmembers(dbus.service
3518
.Object):
3519
exclude.add(name)
3520
3521
client_dict["encrypted_secret"] = (client
3522
.encrypted_secret)
3523
for attr in client.client_structure:
3524
if attr not in exclude:
3525
client_dict[attr] = getattr(client, attr)
3526
3527
clients[client.name] = client_dict
3528
del client_settings[client.name]["secret"]
3529
3530
try:
3531
with tempfile.NamedTemporaryFile(
3532
mode='wb',
3533
suffix=".pickle",
3534
prefix='clients-',
3535
dir=os.path.dirname(stored_state_path),
3536
delete=False) as stored_state:
3537
pickle.dump((clients, client_settings), stored_state,
3538
protocol=2)
3539
tempname = stored_state.name
3540
os.rename(tempname, stored_state_path)
3541
except (IOError, OSError) as e:
3542
if not debug:
3543
try:
3544
os.remove(tempname)
3545
except NameError:
3546
pass
3547
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3548
logger.warning("Could not save persistent state: {}"
3549
.format(os.strerror(e.errno)))
3550
else:
3551
logger.warning("Could not save persistent state:",
3552
exc_info=e)
3553
raise
3554
3555
# Delete all clients, and settings from config
1955
3556
while tcp_server.clients:
1956
client = tcp_server.clients.pop()
3557
name, client = tcp_server.clients.popitem()
1957
3558
if use_dbus:
1958
3559
client.remove_from_connection()
1959
client.disable_hook = None
1960
# Don't signal anything except ClientRemoved
3560
# Don't signal the disabling
1961
3561
client.disable(quiet=True)
3562
# Emit D-Bus signal for removal
1962
3563
if use_dbus:
1963
# Emit D-Bus signal
1964
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
1965
client.name)
1966
3564
mandos_dbus_service.client_removed_signal(client)
3565
client_settings.clear()
3566
1967
3567
atexit.register(cleanup)
1968
1969
for client in tcp_server.clients:
3568
3569
for client in tcp_server.clients.values():
1970
3570
if use_dbus:
1971
# Emit D-Bus signal
1972
mandos_dbus_service.ClientAdded(client.dbus_object_path)
1973
client.enable()
1974
3571
# Emit D-Bus signal for adding
3572
mandos_dbus_service.client_added_signal(client)
3573
# Need to initiate checking of clients
3574
if client.enabled:
3575
client.init_checker()
3576
1975
3577
tcp_server.enable()
1976
3578
tcp_server.server_activate()
1977
3579
1978
3580
# Find out what port we got
1979
service.port = tcp_server.socket.getsockname()[1]
3581
if zeroconf:
3582
service.port = tcp_server.socket.getsockname()[1]
1980
3583
if use_ipv6:
1981
logger.info(u"Now listening on address %r, port %d,"
1982
" flowinfo %d, scope_id %d"
1983
% tcp_server.socket.getsockname())
3584
logger.info("Now listening on address %r, port %d,"
3585
" flowinfo %d, scope_id %d",
3586
*tcp_server.socket.getsockname())
1984
3587
else: # IPv4
1985
logger.info(u"Now listening on address %r, port %d"
1986
% tcp_server.socket.getsockname())
1987
1988
#service.interface = tcp_server.socket.getsockname()[3]
1989
3588
logger.info("Now listening on address %r, port %d",
3589
*tcp_server.socket.getsockname())
3590
3591
# service.interface = tcp_server.socket.getsockname()[3]
3592
1990
3593
try:
1991
# From the Avahi example code
1992
try:
1993
service.activate()
1994
except dbus.exceptions.DBusException, error:
1995
logger.critical(u"DBusException: %s", error)
1996
cleanup()
1997
sys.exit(1)
1998
# End of Avahi example code
1999
2000
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2001
lambda *args, **kwargs:
2002
(tcp_server.handle_request
2003
(*args[2:], **kwargs) or True))
2004
2005
logger.debug(u"Starting main loop")
3594
if zeroconf:
3595
# From the Avahi example code
3596
try:
3597
service.activate()
3598
except dbus.exceptions.DBusException as error:
3599
logger.critical("D-Bus Exception", exc_info=error)
3600
cleanup()
3601
sys.exit(1)
3602
# End of Avahi example code
3603
3604
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3605
lambda *args, **kwargs:
3606
(tcp_server.handle_request
3607
(*args[2:], **kwargs) or True))
3608
3609
logger.debug("Starting main loop")
2006
3610
main_loop.run()
2007
except AvahiError, error:
2008
logger.critical(u"AvahiError: %s", error)
3611
except AvahiError as error:
3612
logger.critical("Avahi Error", exc_info=error)
2009
3613
cleanup()
2010
3614
sys.exit(1)
2011
3615
except KeyboardInterrupt:
2012
3616
if debug:
2013
print >> sys.stderr
2014
logger.debug(u"Server received KeyboardInterrupt")
2015
logger.debug(u"Server exiting")
3617
print("", file=sys.stderr)
3618
logger.debug("Server received KeyboardInterrupt")
3619
logger.debug("Server exiting")
2016
3620
# Must run before the D-Bus bus name gets deregistered
2017
3621
cleanup()
2018
3622
3623
2019
3624
if __name__ == '__main__':
2020
3625
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0