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- Committer: Teddy Hogeborn
- Date: 2016-07-03 03:32:28 UTC
- Revision ID: teddy@recompile.se-20160703033228-cafpnnfs53kdg52g
Change all http:// URLs to https:// wherever possible.
* INSTALL (Prerequisites/Libraries/Mandos Server): Change "http://" to
"https://" wherever possible.
* Makefile (FORTIFY): - '' -
* mandos.xml (SEE ALSO): - '' -
* plugin-runner.c (main): - '' -
* plugins.d/mandos-client.c (start_mandos_communication): - '' -
* plugins.d/mandos-client.xml (SEE ALSO): - '' -
* INSTALL (Prerequisites/Libraries/Mandos Server): Change "http://" to
"https://" wherever possible.
* Makefile (FORTIFY): - '' -
* mandos.xml (SEE ALSO): - '' -
* plugin-runner.c (main): - '' -
* plugins.d/mandos-client.c (start_mandos_communication): - '' -
* plugins.d/mandos-client.xml (SEE ALSO): - '' -
- files added:
- bugs.xml
- debian/upstream
- network-hooks.d
- plugin-helpers
- files modified:
- .bzrignore
added
removed
mandos
11
11
# "AvahiService" class, and some lines in "main".
12
12
#
13
13
# Everything else is
14
# Copyright © 2008-2011 Teddy Hogeborn
15
# Copyright © 2008-2011 Björn Påhlsson
14
# Copyright © 2008-2016 Teddy Hogeborn
15
# Copyright © 2008-2016 Björn Påhlsson
16
16
#
17
17
# This program is free software: you can redistribute it and/or modify
18
18
# it under the terms of the GNU General Public License as published by
28
28
# along with this program. If not, see
29
29
# <http://www.gnu.org/licenses/>.
30
30
#
31
# Contact the authors at <mandos@fukt.bsnet.se>.
31
# Contact the authors at <mandos@recompile.se>.
32
32
#
33
33
34
34
from __future__ import (division, absolute_import, print_function,
35
35
unicode_literals)
36
36
37
import SocketServer as socketserver
37
try:
38
from future_builtins import *
39
except ImportError:
40
pass
41
42
try:
43
import SocketServer as socketserver
44
except ImportError:
45
import socketserver
38
46
import socket
39
47
import argparse
40
48
import datetime
41
49
import errno
42
import gnutls.crypto
43
import gnutls.connection
44
import gnutls.errors
45
import gnutls.library.functions
46
import gnutls.library.constants
47
import gnutls.library.types
48
import ConfigParser as configparser
50
try:
51
import ConfigParser as configparser
52
except ImportError:
53
import configparser
49
54
import sys
50
55
import re
51
56
import os
60
65
import struct
61
66
import fcntl
62
67
import functools
63
import cPickle as pickle
68
try:
69
import cPickle as pickle
70
except ImportError:
71
import pickle
64
72
import multiprocessing
73
import types
74
import binascii
75
import tempfile
76
import itertools
77
import collections
78
import codecs
65
79
66
80
import dbus
67
81
import dbus.service
68
import gobject
69
import avahi
82
from gi.repository import GLib
70
83
from dbus.mainloop.glib import DBusGMainLoop
71
84
import ctypes
72
85
import ctypes.util
73
86
import xml.dom.minidom
74
87
import inspect
75
88
89
# Try to find the value of SO_BINDTODEVICE:
76
90
try:
91
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
92
# newer, and it is also the most natural place for it:
77
93
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
78
94
except AttributeError:
79
95
try:
96
# This is where SO_BINDTODEVICE was up to and including Python
97
# 2.6, and also 3.2:
80
98
from IN import SO_BINDTODEVICE
81
99
except ImportError:
82
SO_BINDTODEVICE = None
83
84
85
version = "1.3.1"
86
87
#logger = logging.getLogger('mandos')
88
logger = logging.Logger('mandos')
89
syslogger = (logging.handlers.SysLogHandler
90
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
91
address = str("/dev/log")))
92
syslogger.setFormatter(logging.Formatter
93
('Mandos [%(process)d]: %(levelname)s:'
94
' %(message)s'))
95
logger.addHandler(syslogger)
96
97
console = logging.StreamHandler()
98
console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'
99
' %(levelname)s:'
100
' %(message)s'))
101
logger.addHandler(console)
100
# In Python 2.7 it seems to have been removed entirely.
101
# Try running the C preprocessor:
102
try:
103
cc = subprocess.Popen(["cc", "--language=c", "-E",
104
"/dev/stdin"],
105
stdin=subprocess.PIPE,
106
stdout=subprocess.PIPE)
107
stdout = cc.communicate(
108
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
109
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
110
except (OSError, ValueError, IndexError):
111
# No value found
112
SO_BINDTODEVICE = None
113
114
if sys.version_info.major == 2:
115
str = unicode
116
117
version = "1.7.10"
118
stored_state_file = "clients.pickle"
119
120
logger = logging.getLogger()
121
syslogger = None
122
123
try:
124
if_nametoindex = ctypes.cdll.LoadLibrary(
125
ctypes.util.find_library("c")).if_nametoindex
126
except (OSError, AttributeError):
127
128
def if_nametoindex(interface):
129
"Get an interface index the hard way, i.e. using fcntl()"
130
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
131
with contextlib.closing(socket.socket()) as s:
132
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
133
struct.pack(b"16s16x", interface))
134
interface_index = struct.unpack("I", ifreq[16:20])[0]
135
return interface_index
136
137
138
def copy_function(func):
139
"""Make a copy of a function"""
140
if sys.version_info.major == 2:
141
return types.FunctionType(func.func_code,
142
func.func_globals,
143
func.func_name,
144
func.func_defaults,
145
func.func_closure)
146
else:
147
return types.FunctionType(func.__code__,
148
func.__globals__,
149
func.__name__,
150
func.__defaults__,
151
func.__closure__)
152
153
154
def initlogger(debug, level=logging.WARNING):
155
"""init logger and add loglevel"""
156
157
global syslogger
158
syslogger = (logging.handlers.SysLogHandler(
159
facility = logging.handlers.SysLogHandler.LOG_DAEMON,
160
address = "/dev/log"))
161
syslogger.setFormatter(logging.Formatter
162
('Mandos [%(process)d]: %(levelname)s:'
163
' %(message)s'))
164
logger.addHandler(syslogger)
165
166
if debug:
167
console = logging.StreamHandler()
168
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
169
' [%(process)d]:'
170
' %(levelname)s:'
171
' %(message)s'))
172
logger.addHandler(console)
173
logger.setLevel(level)
174
175
176
class PGPError(Exception):
177
"""Exception if encryption/decryption fails"""
178
pass
179
180
181
class PGPEngine(object):
182
"""A simple class for OpenPGP symmetric encryption & decryption"""
183
184
def __init__(self):
185
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
186
self.gpg = "gpg"
187
try:
188
output = subprocess.check_output(["gpgconf"])
189
for line in output.splitlines():
190
name, text, path = line.split(b":")
191
if name == "gpg":
192
self.gpg = path
193
break
194
except OSError as e:
195
if e.errno != errno.ENOENT:
196
raise
197
self.gnupgargs = ['--batch',
198
'--homedir', self.tempdir,
199
'--force-mdc',
200
'--quiet']
201
# Only GPG version 1 has the --no-use-agent option.
202
if self.gpg == "gpg" or self.gpg.endswith("/gpg"):
203
self.gnupgargs.append("--no-use-agent")
204
205
def __enter__(self):
206
return self
207
208
def __exit__(self, exc_type, exc_value, traceback):
209
self._cleanup()
210
return False
211
212
def __del__(self):
213
self._cleanup()
214
215
def _cleanup(self):
216
if self.tempdir is not None:
217
# Delete contents of tempdir
218
for root, dirs, files in os.walk(self.tempdir,
219
topdown = False):
220
for filename in files:
221
os.remove(os.path.join(root, filename))
222
for dirname in dirs:
223
os.rmdir(os.path.join(root, dirname))
224
# Remove tempdir
225
os.rmdir(self.tempdir)
226
self.tempdir = None
227
228
def password_encode(self, password):
229
# Passphrase can not be empty and can not contain newlines or
230
# NUL bytes. So we prefix it and hex encode it.
231
encoded = b"mandos" + binascii.hexlify(password)
232
if len(encoded) > 2048:
233
# GnuPG can't handle long passwords, so encode differently
234
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
235
.replace(b"\n", b"\\n")
236
.replace(b"\0", b"\\x00"))
237
return encoded
238
239
def encrypt(self, data, password):
240
passphrase = self.password_encode(password)
241
with tempfile.NamedTemporaryFile(
242
dir=self.tempdir) as passfile:
243
passfile.write(passphrase)
244
passfile.flush()
245
proc = subprocess.Popen([self.gpg, '--symmetric',
246
'--passphrase-file',
247
passfile.name]
248
+ self.gnupgargs,
249
stdin = subprocess.PIPE,
250
stdout = subprocess.PIPE,
251
stderr = subprocess.PIPE)
252
ciphertext, err = proc.communicate(input = data)
253
if proc.returncode != 0:
254
raise PGPError(err)
255
return ciphertext
256
257
def decrypt(self, data, password):
258
passphrase = self.password_encode(password)
259
with tempfile.NamedTemporaryFile(
260
dir = self.tempdir) as passfile:
261
passfile.write(passphrase)
262
passfile.flush()
263
proc = subprocess.Popen([self.gpg, '--decrypt',
264
'--passphrase-file',
265
passfile.name]
266
+ self.gnupgargs,
267
stdin = subprocess.PIPE,
268
stdout = subprocess.PIPE,
269
stderr = subprocess.PIPE)
270
decrypted_plaintext, err = proc.communicate(input = data)
271
if proc.returncode != 0:
272
raise PGPError(err)
273
return decrypted_plaintext
274
275
# Pretend that we have an Avahi module
276
class Avahi(object):
277
"""This isn't so much a class as it is a module-like namespace.
278
It is instantiated once, and simulates having an Avahi module."""
279
IF_UNSPEC = -1 # avahi-common/address.h
280
PROTO_UNSPEC = -1 # avahi-common/address.h
281
PROTO_INET = 0 # avahi-common/address.h
282
PROTO_INET6 = 1 # avahi-common/address.h
283
DBUS_NAME = "org.freedesktop.Avahi"
284
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
285
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
286
DBUS_PATH_SERVER = "/"
287
def string_array_to_txt_array(self, t):
288
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
289
for s in t), signature="ay")
290
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
291
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
292
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
293
SERVER_INVALID = 0 # avahi-common/defs.h
294
SERVER_REGISTERING = 1 # avahi-common/defs.h
295
SERVER_RUNNING = 2 # avahi-common/defs.h
296
SERVER_COLLISION = 3 # avahi-common/defs.h
297
SERVER_FAILURE = 4 # avahi-common/defs.h
298
avahi = Avahi()
102
299
103
300
class AvahiError(Exception):
104
301
def __init__(self, value, *args, **kwargs):
105
302
self.value = value
106
super(AvahiError, self).__init__(value, *args, **kwargs)
107
def __unicode__(self):
108
return unicode(repr(self.value))
303
return super(AvahiError, self).__init__(value, *args,
304
**kwargs)
305
109
306
110
307
class AvahiServiceError(AvahiError):
111
308
pass
112
309
310
113
311
class AvahiGroupError(AvahiError):
114
312
pass
115
313
122
320
Used to optionally bind to the specified interface.
123
321
name: string; Example: 'Mandos'
124
322
type: string; Example: '_mandos._tcp'.
125
See <http://www.dns-sd.org/ServiceTypes.html>
323
See <https://www.iana.org/assignments/service-names-port-numbers>
126
324
port: integer; what port to announce
127
325
TXT: list of strings; TXT record for the service
128
326
domain: string; Domain to publish on, default to .local if empty.
134
332
server: D-Bus Server
135
333
bus: dbus.SystemBus()
136
334
"""
137
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
138
servicetype = None, port = None, TXT = None,
139
domain = "", host = "", max_renames = 32768,
140
protocol = avahi.PROTO_UNSPEC, bus = None):
335
336
def __init__(self,
337
interface = avahi.IF_UNSPEC,
338
name = None,
339
servicetype = None,
340
port = None,
341
TXT = None,
342
domain = "",
343
host = "",
344
max_renames = 32768,
345
protocol = avahi.PROTO_UNSPEC,
346
bus = None):
141
347
self.interface = interface
142
348
self.name = name
143
349
self.type = servicetype
152
358
self.server = None
153
359
self.bus = bus
154
360
self.entry_group_state_changed_match = None
155
def rename(self):
361
362
def rename(self, remove=True):
156
363
"""Derived from the Avahi example code"""
157
364
if self.rename_count >= self.max_renames:
158
365
logger.critical("No suitable Zeroconf service name found"
159
366
" after %i retries, exiting.",
160
367
self.rename_count)
161
368
raise AvahiServiceError("Too many renames")
162
self.name = unicode(self.server.GetAlternativeServiceName(self.name))
369
self.name = str(
370
self.server.GetAlternativeServiceName(self.name))
371
self.rename_count += 1
163
372
logger.info("Changing Zeroconf service name to %r ...",
164
373
self.name)
165
syslogger.setFormatter(logging.Formatter
166
('Mandos (%s) [%%(process)d]:'
167
' %%(levelname)s: %%(message)s'
168
% self.name))
169
self.remove()
374
if remove:
375
self.remove()
170
376
try:
171
377
self.add()
172
378
except dbus.exceptions.DBusException as error:
173
logger.critical("DBusException: %s", error)
174
self.cleanup()
175
os._exit(1)
176
self.rename_count += 1
379
if (error.get_dbus_name()
380
== "org.freedesktop.Avahi.CollisionError"):
381
logger.info("Local Zeroconf service name collision.")
382
return self.rename(remove=False)
383
else:
384
logger.critical("D-Bus Exception", exc_info=error)
385
self.cleanup()
386
os._exit(1)
387
177
388
def remove(self):
178
389
"""Derived from the Avahi example code"""
179
390
if self.entry_group_state_changed_match is not None:
181
392
self.entry_group_state_changed_match = None
182
393
if self.group is not None:
183
394
self.group.Reset()
395
184
396
def add(self):
185
397
"""Derived from the Avahi example code"""
186
398
self.remove()
191
403
avahi.DBUS_INTERFACE_ENTRY_GROUP)
192
404
self.entry_group_state_changed_match = (
193
405
self.group.connect_to_signal(
194
'StateChanged', self .entry_group_state_changed))
406
'StateChanged', self.entry_group_state_changed))
195
407
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
196
408
self.name, self.type)
197
409
self.group.AddService(
203
415
dbus.UInt16(self.port),
204
416
avahi.string_array_to_txt_array(self.TXT))
205
417
self.group.Commit()
418
206
419
def entry_group_state_changed(self, state, error):
207
420
"""Derived from the Avahi example code"""
208
421
logger.debug("Avahi entry group state change: %i", state)
214
427
self.rename()
215
428
elif state == avahi.ENTRY_GROUP_FAILURE:
216
429
logger.critical("Avahi: Error in group state changed %s",
217
unicode(error))
218
raise AvahiGroupError("State changed: %s"
219
% unicode(error))
430
str(error))
431
raise AvahiGroupError("State changed: {!s}".format(error))
432
220
433
def cleanup(self):
221
434
"""Derived from the Avahi example code"""
222
435
if self.group is not None:
223
436
try:
224
437
self.group.Free()
225
438
except (dbus.exceptions.UnknownMethodException,
226
dbus.exceptions.DBusException) as e:
439
dbus.exceptions.DBusException):
227
440
pass
228
441
self.group = None
229
442
self.remove()
443
230
444
def server_state_changed(self, state, error=None):
231
445
"""Derived from the Avahi example code"""
232
446
logger.debug("Avahi server state change: %i", state)
233
bad_states = { avahi.SERVER_INVALID:
234
"Zeroconf server invalid",
235
avahi.SERVER_REGISTERING: None,
236
avahi.SERVER_COLLISION:
237
"Zeroconf server name collision",
238
avahi.SERVER_FAILURE:
239
"Zeroconf server failure" }
447
bad_states = {
448
avahi.SERVER_INVALID: "Zeroconf server invalid",
449
avahi.SERVER_REGISTERING: None,
450
avahi.SERVER_COLLISION: "Zeroconf server name collision",
451
avahi.SERVER_FAILURE: "Zeroconf server failure",
452
}
240
453
if state in bad_states:
241
454
if bad_states[state] is not None:
242
455
if error is None:
245
458
logger.error(bad_states[state] + ": %r", error)
246
459
self.cleanup()
247
460
elif state == avahi.SERVER_RUNNING:
248
self.add()
461
try:
462
self.add()
463
except dbus.exceptions.DBusException as error:
464
if (error.get_dbus_name()
465
== "org.freedesktop.Avahi.CollisionError"):
466
logger.info("Local Zeroconf service name"
467
" collision.")
468
return self.rename(remove=False)
469
else:
470
logger.critical("D-Bus Exception", exc_info=error)
471
self.cleanup()
472
os._exit(1)
249
473
else:
250
474
if error is None:
251
475
logger.debug("Unknown state: %r", state)
252
476
else:
253
477
logger.debug("Unknown state: %r: %r", state, error)
478
254
479
def activate(self):
255
480
"""Derived from the Avahi example code"""
256
481
if self.server is None:
260
485
follow_name_owner_changes=True),
261
486
avahi.DBUS_INTERFACE_SERVER)
262
487
self.server.connect_to_signal("StateChanged",
263
self.server_state_changed)
488
self.server_state_changed)
264
489
self.server_state_changed(self.server.GetState())
265
490
266
491
492
class AvahiServiceToSyslog(AvahiService):
493
def rename(self, *args, **kwargs):
494
"""Add the new name to the syslog messages"""
495
ret = AvahiService.rename(self, *args, **kwargs)
496
syslogger.setFormatter(logging.Formatter(
497
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
498
.format(self.name)))
499
return ret
500
501
# Pretend that we have a GnuTLS module
502
class GnuTLS(object):
503
"""This isn't so much a class as it is a module-like namespace.
504
It is instantiated once, and simulates having a GnuTLS module."""
505
506
_library = ctypes.cdll.LoadLibrary(
507
ctypes.util.find_library("gnutls"))
508
_need_version = b"3.3.0"
509
def __init__(self):
510
# Need to use class name "GnuTLS" here, since this method is
511
# called before the assignment to the "gnutls" global variable
512
# happens.
513
if GnuTLS.check_version(self._need_version) is None:
514
raise GnuTLS.Error("Needs GnuTLS {} or later"
515
.format(self._need_version))
516
517
# Unless otherwise indicated, the constants and types below are
518
# all from the gnutls/gnutls.h C header file.
519
520
# Constants
521
E_SUCCESS = 0
522
E_INTERRUPTED = -52
523
E_AGAIN = -28
524
CRT_OPENPGP = 2
525
CLIENT = 2
526
SHUT_RDWR = 0
527
CRD_CERTIFICATE = 1
528
E_NO_CERTIFICATE_FOUND = -49
529
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
530
531
# Types
532
class session_int(ctypes.Structure):
533
_fields_ = []
534
session_t = ctypes.POINTER(session_int)
535
class certificate_credentials_st(ctypes.Structure):
536
_fields_ = []
537
certificate_credentials_t = ctypes.POINTER(
538
certificate_credentials_st)
539
certificate_type_t = ctypes.c_int
540
class datum_t(ctypes.Structure):
541
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
542
('size', ctypes.c_uint)]
543
class openpgp_crt_int(ctypes.Structure):
544
_fields_ = []
545
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
546
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
547
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
548
credentials_type_t = ctypes.c_int
549
transport_ptr_t = ctypes.c_void_p
550
close_request_t = ctypes.c_int
551
552
# Exceptions
553
class Error(Exception):
554
# We need to use the class name "GnuTLS" here, since this
555
# exception might be raised from within GnuTLS.__init__,
556
# which is called before the assignment to the "gnutls"
557
# global variable has happened.
558
def __init__(self, message = None, code = None, args=()):
559
# Default usage is by a message string, but if a return
560
# code is passed, convert it to a string with
561
# gnutls.strerror()
562
self.code = code
563
if message is None and code is not None:
564
message = GnuTLS.strerror(code)
565
return super(GnuTLS.Error, self).__init__(
566
message, *args)
567
568
class CertificateSecurityError(Error):
569
pass
570
571
# Classes
572
class Credentials(object):
573
def __init__(self):
574
self._c_object = gnutls.certificate_credentials_t()
575
gnutls.certificate_allocate_credentials(
576
ctypes.byref(self._c_object))
577
self.type = gnutls.CRD_CERTIFICATE
578
579
def __del__(self):
580
gnutls.certificate_free_credentials(self._c_object)
581
582
class ClientSession(object):
583
def __init__(self, socket, credentials = None):
584
self._c_object = gnutls.session_t()
585
gnutls.init(ctypes.byref(self._c_object), gnutls.CLIENT)
586
gnutls.set_default_priority(self._c_object)
587
gnutls.transport_set_ptr(self._c_object, socket.fileno())
588
gnutls.handshake_set_private_extensions(self._c_object,
589
True)
590
self.socket = socket
591
if credentials is None:
592
credentials = gnutls.Credentials()
593
gnutls.credentials_set(self._c_object, credentials.type,
594
ctypes.cast(credentials._c_object,
595
ctypes.c_void_p))
596
self.credentials = credentials
597
598
def __del__(self):
599
gnutls.deinit(self._c_object)
600
601
def handshake(self):
602
return gnutls.handshake(self._c_object)
603
604
def send(self, data):
605
data = bytes(data)
606
data_len = len(data)
607
while data_len > 0:
608
data_len -= gnutls.record_send(self._c_object,
609
data[-data_len:],
610
data_len)
611
612
def bye(self):
613
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
614
615
# Error handling functions
616
def _error_code(result):
617
"""A function to raise exceptions on errors, suitable
618
for the 'restype' attribute on ctypes functions"""
619
if result >= 0:
620
return result
621
if result == gnutls.E_NO_CERTIFICATE_FOUND:
622
raise gnutls.CertificateSecurityError(code = result)
623
raise gnutls.Error(code = result)
624
625
def _retry_on_error(result, func, arguments):
626
"""A function to retry on some errors, suitable
627
for the 'errcheck' attribute on ctypes functions"""
628
while result < 0:
629
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
630
return _error_code(result)
631
result = func(*arguments)
632
return result
633
634
# Unless otherwise indicated, the function declarations below are
635
# all from the gnutls/gnutls.h C header file.
636
637
# Functions
638
priority_set_direct = _library.gnutls_priority_set_direct
639
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
640
ctypes.POINTER(ctypes.c_char_p)]
641
priority_set_direct.restype = _error_code
642
643
init = _library.gnutls_init
644
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
645
init.restype = _error_code
646
647
set_default_priority = _library.gnutls_set_default_priority
648
set_default_priority.argtypes = [session_t]
649
set_default_priority.restype = _error_code
650
651
record_send = _library.gnutls_record_send
652
record_send.argtypes = [session_t, ctypes.c_void_p,
653
ctypes.c_size_t]
654
record_send.restype = ctypes.c_ssize_t
655
record_send.errcheck = _retry_on_error
656
657
certificate_allocate_credentials = (
658
_library.gnutls_certificate_allocate_credentials)
659
certificate_allocate_credentials.argtypes = [
660
ctypes.POINTER(certificate_credentials_t)]
661
certificate_allocate_credentials.restype = _error_code
662
663
certificate_free_credentials = (
664
_library.gnutls_certificate_free_credentials)
665
certificate_free_credentials.argtypes = [certificate_credentials_t]
666
certificate_free_credentials.restype = None
667
668
handshake_set_private_extensions = (
669
_library.gnutls_handshake_set_private_extensions)
670
handshake_set_private_extensions.argtypes = [session_t,
671
ctypes.c_int]
672
handshake_set_private_extensions.restype = None
673
674
credentials_set = _library.gnutls_credentials_set
675
credentials_set.argtypes = [session_t, credentials_type_t,
676
ctypes.c_void_p]
677
credentials_set.restype = _error_code
678
679
strerror = _library.gnutls_strerror
680
strerror.argtypes = [ctypes.c_int]
681
strerror.restype = ctypes.c_char_p
682
683
certificate_type_get = _library.gnutls_certificate_type_get
684
certificate_type_get.argtypes = [session_t]
685
certificate_type_get.restype = _error_code
686
687
certificate_get_peers = _library.gnutls_certificate_get_peers
688
certificate_get_peers.argtypes = [session_t,
689
ctypes.POINTER(ctypes.c_uint)]
690
certificate_get_peers.restype = ctypes.POINTER(datum_t)
691
692
global_set_log_level = _library.gnutls_global_set_log_level
693
global_set_log_level.argtypes = [ctypes.c_int]
694
global_set_log_level.restype = None
695
696
global_set_log_function = _library.gnutls_global_set_log_function
697
global_set_log_function.argtypes = [log_func]
698
global_set_log_function.restype = None
699
700
deinit = _library.gnutls_deinit
701
deinit.argtypes = [session_t]
702
deinit.restype = None
703
704
handshake = _library.gnutls_handshake
705
handshake.argtypes = [session_t]
706
handshake.restype = _error_code
707
handshake.errcheck = _retry_on_error
708
709
transport_set_ptr = _library.gnutls_transport_set_ptr
710
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
711
transport_set_ptr.restype = None
712
713
bye = _library.gnutls_bye
714
bye.argtypes = [session_t, close_request_t]
715
bye.restype = _error_code
716
bye.errcheck = _retry_on_error
717
718
check_version = _library.gnutls_check_version
719
check_version.argtypes = [ctypes.c_char_p]
720
check_version.restype = ctypes.c_char_p
721
722
# All the function declarations below are from gnutls/openpgp.h
723
724
openpgp_crt_init = _library.gnutls_openpgp_crt_init
725
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
726
openpgp_crt_init.restype = _error_code
727
728
openpgp_crt_import = _library.gnutls_openpgp_crt_import
729
openpgp_crt_import.argtypes = [openpgp_crt_t,
730
ctypes.POINTER(datum_t),
731
openpgp_crt_fmt_t]
732
openpgp_crt_import.restype = _error_code
733
734
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
735
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
736
ctypes.POINTER(ctypes.c_uint)]
737
openpgp_crt_verify_self.restype = _error_code
738
739
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
740
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
741
openpgp_crt_deinit.restype = None
742
743
openpgp_crt_get_fingerprint = (
744
_library.gnutls_openpgp_crt_get_fingerprint)
745
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
746
ctypes.c_void_p,
747
ctypes.POINTER(
748
ctypes.c_size_t)]
749
openpgp_crt_get_fingerprint.restype = _error_code
750
751
# Remove non-public functions
752
del _error_code, _retry_on_error
753
# Create the global "gnutls" object, simulating a module
754
gnutls = GnuTLS()
755
756
def call_pipe(connection, # : multiprocessing.Connection
757
func, *args, **kwargs):
758
"""This function is meant to be called by multiprocessing.Process
759
760
This function runs func(*args, **kwargs), and writes the resulting
761
return value on the provided multiprocessing.Connection.
762
"""
763
connection.send(func(*args, **kwargs))
764
connection.close()
765
267
766
class Client(object):
268
767
"""A representation of a client host served by this server.
269
768
270
769
Attributes:
271
_approved: bool(); 'None' if not yet approved/disapproved
770
approved: bool(); 'None' if not yet approved/disapproved
272
771
approval_delay: datetime.timedelta(); Time to wait for approval
273
772
approval_duration: datetime.timedelta(); Duration of one approval
274
773
checker: subprocess.Popen(); a running checker process used
275
774
to see if the client lives.
276
775
'None' if no process is running.
277
checker_callback_tag: a gobject event source tag, or None
776
checker_callback_tag: a GLib event source tag, or None
278
777
checker_command: string; External command which is run to check
279
778
if client lives. %() expansions are done at
280
779
runtime with vars(self) as dict, so that for
281
780
instance %(name)s can be used in the command.
282
checker_initiator_tag: a gobject event source tag, or None
781
checker_initiator_tag: a GLib event source tag, or None
283
782
created: datetime.datetime(); (UTC) object creation
783
client_structure: Object describing what attributes a client has
784
and is used for storing the client at exit
284
785
current_checker_command: string; current running checker_command
285
disable_hook: If set, called by disable() as disable_hook(self)
286
disable_initiator_tag: a gobject event source tag, or None
786
disable_initiator_tag: a GLib event source tag, or None
287
787
enabled: bool()
288
788
fingerprint: string (40 or 32 hexadecimal digits); used to
289
789
uniquely identify the client
291
791
interval: datetime.timedelta(); How often to start a new checker
292
792
last_approval_request: datetime.datetime(); (UTC) or None
293
793
last_checked_ok: datetime.datetime(); (UTC) or None
294
last_enabled: datetime.datetime(); (UTC)
794
last_checker_status: integer between 0 and 255 reflecting exit
795
status of last checker. -1 reflects crashed
796
checker, -2 means no checker completed yet.
797
last_checker_signal: The signal which killed the last checker, if
798
last_checker_status is -1
799
last_enabled: datetime.datetime(); (UTC) or None
295
800
name: string; from the config file, used in log messages and
296
801
D-Bus identifiers
297
802
secret: bytestring; sent verbatim (over TLS) to client
298
803
timeout: datetime.timedelta(); How long from last_checked_ok
299
804
until this client is disabled
300
extended_timeout: extra long timeout when password has been sent
805
extended_timeout: extra long timeout when secret has been sent
301
806
runtime_expansions: Allowed attributes for runtime expansion.
302
807
expires: datetime.datetime(); time (UTC) when a client will be
303
808
disabled, or None
809
server_settings: The server_settings dict from main()
304
810
"""
305
811
306
812
runtime_expansions = ("approval_delay", "approval_duration",
307
"created", "enabled", "fingerprint",
308
"host", "interval", "last_checked_ok",
813
"created", "enabled", "expires",
814
"fingerprint", "host", "interval",
815
"last_approval_request", "last_checked_ok",
309
816
"last_enabled", "name", "timeout")
817
client_defaults = {
818
"timeout": "PT5M",
819
"extended_timeout": "PT15M",
820
"interval": "PT2M",
821
"checker": "fping -q -- %%(host)s",
822
"host": "",
823
"approval_delay": "PT0S",
824
"approval_duration": "PT1S",
825
"approved_by_default": "True",
826
"enabled": "True",
827
}
310
828
311
829
@staticmethod
312
def _timedelta_to_milliseconds(td):
313
"Convert a datetime.timedelta() to milliseconds"
314
return ((td.days * 24 * 60 * 60 * 1000)
315
+ (td.seconds * 1000)
316
+ (td.microseconds // 1000))
317
318
def timeout_milliseconds(self):
319
"Return the 'timeout' attribute in milliseconds"
320
return self._timedelta_to_milliseconds(self.timeout)
321
322
def extended_timeout_milliseconds(self):
323
"Return the 'extended_timeout' attribute in milliseconds"
324
return self._timedelta_to_milliseconds(self.extended_timeout)
325
326
def interval_milliseconds(self):
327
"Return the 'interval' attribute in milliseconds"
328
return self._timedelta_to_milliseconds(self.interval)
329
330
def approval_delay_milliseconds(self):
331
return self._timedelta_to_milliseconds(self.approval_delay)
332
333
def __init__(self, name = None, disable_hook=None, config=None):
334
"""Note: the 'checker' key in 'config' sets the
335
'checker_command' attribute and *not* the 'checker'
336
attribute."""
830
def config_parser(config):
831
"""Construct a new dict of client settings of this form:
832
{ client_name: {setting_name: value, ...}, ...}
833
with exceptions for any special settings as defined above.
834
NOTE: Must be a pure function. Must return the same result
835
value given the same arguments.
836
"""
837
settings = {}
838
for client_name in config.sections():
839
section = dict(config.items(client_name))
840
client = settings[client_name] = {}
841
842
client["host"] = section["host"]
843
# Reformat values from string types to Python types
844
client["approved_by_default"] = config.getboolean(
845
client_name, "approved_by_default")
846
client["enabled"] = config.getboolean(client_name,
847
"enabled")
848
849
# Uppercase and remove spaces from fingerprint for later
850
# comparison purposes with return value from the
851
# fingerprint() function
852
client["fingerprint"] = (section["fingerprint"].upper()
853
.replace(" ", ""))
854
if "secret" in section:
855
client["secret"] = codecs.decode(section["secret"]
856
.encode("utf-8"),
857
"base64")
858
elif "secfile" in section:
859
with open(os.path.expanduser(os.path.expandvars
860
(section["secfile"])),
861
"rb") as secfile:
862
client["secret"] = secfile.read()
863
else:
864
raise TypeError("No secret or secfile for section {}"
865
.format(section))
866
client["timeout"] = string_to_delta(section["timeout"])
867
client["extended_timeout"] = string_to_delta(
868
section["extended_timeout"])
869
client["interval"] = string_to_delta(section["interval"])
870
client["approval_delay"] = string_to_delta(
871
section["approval_delay"])
872
client["approval_duration"] = string_to_delta(
873
section["approval_duration"])
874
client["checker_command"] = section["checker"]
875
client["last_approval_request"] = None
876
client["last_checked_ok"] = None
877
client["last_checker_status"] = -2
878
879
return settings
880
881
def __init__(self, settings, name = None, server_settings=None):
337
882
self.name = name
338
if config is None:
339
config = {}
883
if server_settings is None:
884
server_settings = {}
885
self.server_settings = server_settings
886
# adding all client settings
887
for setting, value in settings.items():
888
setattr(self, setting, value)
889
890
if self.enabled:
891
if not hasattr(self, "last_enabled"):
892
self.last_enabled = datetime.datetime.utcnow()
893
if not hasattr(self, "expires"):
894
self.expires = (datetime.datetime.utcnow()
895
+ self.timeout)
896
else:
897
self.last_enabled = None
898
self.expires = None
899
340
900
logger.debug("Creating client %r", self.name)
341
# Uppercase and remove spaces from fingerprint for later
342
# comparison purposes with return value from the fingerprint()
343
# function
344
self.fingerprint = (config["fingerprint"].upper()
345
.replace(" ", ""))
346
901
logger.debug(" Fingerprint: %s", self.fingerprint)
347
if "secret" in config:
348
self.secret = config["secret"].decode("base64")
349
elif "secfile" in config:
350
with open(os.path.expanduser(os.path.expandvars
351
(config["secfile"])),
352
"rb") as secfile:
353
self.secret = secfile.read()
354
else:
355
raise TypeError("No secret or secfile for client %s"
356
% self.name)
357
self.host = config.get("host", "")
358
self.created = datetime.datetime.utcnow()
359
self.enabled = False
360
self.last_approval_request = None
361
self.last_enabled = None
362
self.last_checked_ok = None
363
self.timeout = string_to_delta(config["timeout"])
364
self.extended_timeout = string_to_delta(config["extended_timeout"])
365
self.interval = string_to_delta(config["interval"])
366
self.disable_hook = disable_hook
902
self.created = settings.get("created",
903
datetime.datetime.utcnow())
904
905
# attributes specific for this server instance
367
906
self.checker = None
368
907
self.checker_initiator_tag = None
369
908
self.disable_initiator_tag = None
370
self.expires = None
371
909
self.checker_callback_tag = None
372
self.checker_command = config["checker"]
373
910
self.current_checker_command = None
374
self.last_connect = None
375
self._approved = None
376
self.approved_by_default = config.get("approved_by_default",
377
True)
911
self.approved = None
378
912
self.approvals_pending = 0
379
self.approval_delay = string_to_delta(
380
config["approval_delay"])
381
self.approval_duration = string_to_delta(
382
config["approval_duration"])
383
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
913
self.changedstate = multiprocessing_manager.Condition(
914
multiprocessing_manager.Lock())
915
self.client_structure = [attr
916
for attr in self.__dict__.keys()
917
if not attr.startswith("_")]
918
self.client_structure.append("client_structure")
919
920
for name, t in inspect.getmembers(
921
type(self), lambda obj: isinstance(obj, property)):
922
if not name.startswith("_"):
923
self.client_structure.append(name)
384
924
925
# Send notice to process children that client state has changed
385
926
def send_changedstate(self):
386
self.changedstate.acquire()
387
self.changedstate.notify_all()
388
self.changedstate.release()
389
927
with self.changedstate:
928
self.changedstate.notify_all()
929
390
930
def enable(self):
391
931
"""Start this client's checker and timeout hooks"""
392
932
if getattr(self, "enabled", False):
393
933
# Already enabled
394
934
return
395
self.send_changedstate()
935
self.expires = datetime.datetime.utcnow() + self.timeout
936
self.enabled = True
396
937
self.last_enabled = datetime.datetime.utcnow()
397
# Schedule a new checker to be started an 'interval' from now,
398
# and every interval from then on.
399
self.checker_initiator_tag = (gobject.timeout_add
400
(self.interval_milliseconds(),
401
self.start_checker))
402
# Schedule a disable() when 'timeout' has passed
403
self.expires = datetime.datetime.utcnow() + self.timeout
404
self.disable_initiator_tag = (gobject.timeout_add
405
(self.timeout_milliseconds(),
406
self.disable))
407
self.enabled = True
408
# Also start a new checker *right now*.
409
self.start_checker()
938
self.init_checker()
939
self.send_changedstate()
410
940
411
941
def disable(self, quiet=True):
412
942
"""Disable this client."""
413
943
if not getattr(self, "enabled", False):
414
944
return False
415
945
if not quiet:
416
self.send_changedstate()
417
if not quiet:
418
946
logger.info("Disabling client %s", self.name)
419
if getattr(self, "disable_initiator_tag", False):
420
gobject.source_remove(self.disable_initiator_tag)
947
if getattr(self, "disable_initiator_tag", None) is not None:
948
GLib.source_remove(self.disable_initiator_tag)
421
949
self.disable_initiator_tag = None
422
950
self.expires = None
423
if getattr(self, "checker_initiator_tag", False):
424
gobject.source_remove(self.checker_initiator_tag)
951
if getattr(self, "checker_initiator_tag", None) is not None:
952
GLib.source_remove(self.checker_initiator_tag)
425
953
self.checker_initiator_tag = None
426
954
self.stop_checker()
427
if self.disable_hook:
428
self.disable_hook(self)
429
955
self.enabled = False
430
# Do not run this again if called by a gobject.timeout_add
956
if not quiet:
957
self.send_changedstate()
958
# Do not run this again if called by a GLib.timeout_add
431
959
return False
432
960
433
961
def __del__(self):
434
self.disable_hook = None
435
962
self.disable()
436
963
437
def checker_callback(self, pid, condition, command):
964
def init_checker(self):
965
# Schedule a new checker to be started an 'interval' from now,
966
# and every interval from then on.
967
if self.checker_initiator_tag is not None:
968
GLib.source_remove(self.checker_initiator_tag)
969
self.checker_initiator_tag = GLib.timeout_add(
970
int(self.interval.total_seconds() * 1000),
971
self.start_checker)
972
# Schedule a disable() when 'timeout' has passed
973
if self.disable_initiator_tag is not None:
974
GLib.source_remove(self.disable_initiator_tag)
975
self.disable_initiator_tag = GLib.timeout_add(
976
int(self.timeout.total_seconds() * 1000), self.disable)
977
# Also start a new checker *right now*.
978
self.start_checker()
979
980
def checker_callback(self, source, condition, connection,
981
command):
438
982
"""The checker has completed, so take appropriate actions."""
439
983
self.checker_callback_tag = None
440
984
self.checker = None
441
if os.WIFEXITED(condition):
442
exitstatus = os.WEXITSTATUS(condition)
443
if exitstatus == 0:
985
# Read return code from connection (see call_pipe)
986
returncode = connection.recv()
987
connection.close()
988
989
if returncode >= 0:
990
self.last_checker_status = returncode
991
self.last_checker_signal = None
992
if self.last_checker_status == 0:
444
993
logger.info("Checker for %(name)s succeeded",
445
994
vars(self))
446
995
self.checked_ok()
447
996
else:
448
logger.info("Checker for %(name)s failed",
449
vars(self))
997
logger.info("Checker for %(name)s failed", vars(self))
450
998
else:
999
self.last_checker_status = -1
1000
self.last_checker_signal = -returncode
451
1001
logger.warning("Checker for %(name)s crashed?",
452
1002
vars(self))
453
454
def checked_ok(self, timeout=None):
455
"""Bump up the timeout for this client.
456
457
This should only be called when the client has been seen,
458
alive and well.
459
"""
1003
return False
1004
1005
def checked_ok(self):
1006
"""Assert that the client has been seen, alive and well."""
1007
self.last_checked_ok = datetime.datetime.utcnow()
1008
self.last_checker_status = 0
1009
self.last_checker_signal = None
1010
self.bump_timeout()
1011
1012
def bump_timeout(self, timeout=None):
1013
"""Bump up the timeout for this client."""
460
1014
if timeout is None:
461
1015
timeout = self.timeout
462
self.last_checked_ok = datetime.datetime.utcnow()
463
gobject.source_remove(self.disable_initiator_tag)
464
self.expires = datetime.datetime.utcnow() + timeout
465
self.disable_initiator_tag = (gobject.timeout_add
466
(self._timedelta_to_milliseconds(timeout),
467
self.disable))
1016
if self.disable_initiator_tag is not None:
1017
GLib.source_remove(self.disable_initiator_tag)
1018
self.disable_initiator_tag = None
1019
if getattr(self, "enabled", False):
1020
self.disable_initiator_tag = GLib.timeout_add(
1021
int(timeout.total_seconds() * 1000), self.disable)
1022
self.expires = datetime.datetime.utcnow() + timeout
468
1023
469
1024
def need_approval(self):
470
1025
self.last_approval_request = datetime.datetime.utcnow()
475
1030
If a checker already exists, leave it running and do
476
1031
nothing."""
477
1032
# The reason for not killing a running checker is that if we
478
# did that, then if a checker (for some reason) started
479
# running slowly and taking more than 'interval' time, the
480
# client would inevitably timeout, since no checker would get
481
# a chance to run to completion. If we instead leave running
1033
# did that, and if a checker (for some reason) started running
1034
# slowly and taking more than 'interval' time, then the client
1035
# would inevitably timeout, since no checker would get a
1036
# chance to run to completion. If we instead leave running
482
1037
# checkers alone, the checker would have to take more time
483
1038
# than 'timeout' for the client to be disabled, which is as it
484
1039
# should be.
485
1040
486
# If a checker exists, make sure it is not a zombie
487
try:
488
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
489
except (AttributeError, OSError) as error:
490
if (isinstance(error, OSError)
491
and error.errno != errno.ECHILD):
492
raise error
493
else:
494
if pid:
495
logger.warning("Checker was a zombie")
496
gobject.source_remove(self.checker_callback_tag)
497
self.checker_callback(pid, status,
498
self.current_checker_command)
1041
if self.checker is not None and not self.checker.is_alive():
1042
logger.warning("Checker was not alive; joining")
1043
self.checker.join()
1044
self.checker = None
499
1045
# Start a new checker if needed
500
1046
if self.checker is None:
1047
# Escape attributes for the shell
1048
escaped_attrs = {
1049
attr: re.escape(str(getattr(self, attr)))
1050
for attr in self.runtime_expansions }
501
1051
try:
502
# In case checker_command has exactly one % operator
503
command = self.checker_command % self.host
504
except TypeError:
505
# Escape attributes for the shell
506
escaped_attrs = dict(
507
(attr,
508
re.escape(unicode(str(getattr(self, attr, "")),
509
errors=
510
'replace')))
511
for attr in
512
self.runtime_expansions)
513
514
try:
515
command = self.checker_command % escaped_attrs
516
except TypeError as error:
517
logger.error('Could not format string "%s":'
518
' %s', self.checker_command, error)
519
return True # Try again later
1052
command = self.checker_command % escaped_attrs
1053
except TypeError as error:
1054
logger.error('Could not format string "%s"',
1055
self.checker_command,
1056
exc_info=error)
1057
return True # Try again later
520
1058
self.current_checker_command = command
521
try:
522
logger.info("Starting checker %r for %s",
523
command, self.name)
524
# We don't need to redirect stdout and stderr, since
525
# in normal mode, that is already done by daemon(),
526
# and in debug mode we don't want to. (Stdin is
527
# always replaced by /dev/null.)
528
self.checker = subprocess.Popen(command,
529
close_fds=True,
530
shell=True, cwd="/")
531
self.checker_callback_tag = (gobject.child_watch_add
532
(self.checker.pid,
533
self.checker_callback,
534
data=command))
535
# The checker may have completed before the gobject
536
# watch was added. Check for this.
537
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
538
if pid:
539
gobject.source_remove(self.checker_callback_tag)
540
self.checker_callback(pid, status, command)
541
except OSError as error:
542
logger.error("Failed to start subprocess: %s",
543
error)
544
# Re-run this periodically if run by gobject.timeout_add
1059
logger.info("Starting checker %r for %s", command,
1060
self.name)
1061
# We don't need to redirect stdout and stderr, since
1062
# in normal mode, that is already done by daemon(),
1063
# and in debug mode we don't want to. (Stdin is
1064
# always replaced by /dev/null.)
1065
# The exception is when not debugging but nevertheless
1066
# running in the foreground; use the previously
1067
# created wnull.
1068
popen_args = { "close_fds": True,
1069
"shell": True,
1070
"cwd": "/" }
1071
if (not self.server_settings["debug"]
1072
and self.server_settings["foreground"]):
1073
popen_args.update({"stdout": wnull,
1074
"stderr": wnull })
1075
pipe = multiprocessing.Pipe(duplex = False)
1076
self.checker = multiprocessing.Process(
1077
target = call_pipe,
1078
args = (pipe[1], subprocess.call, command),
1079
kwargs = popen_args)
1080
self.checker.start()
1081
self.checker_callback_tag = GLib.io_add_watch(
1082
pipe[0].fileno(), GLib.IO_IN,
1083
self.checker_callback, pipe[0], command)
1084
# Re-run this periodically if run by GLib.timeout_add
545
1085
return True
546
1086
547
1087
def stop_checker(self):
548
1088
"""Force the checker process, if any, to stop."""
549
1089
if self.checker_callback_tag:
550
gobject.source_remove(self.checker_callback_tag)
1090
GLib.source_remove(self.checker_callback_tag)
551
1091
self.checker_callback_tag = None
552
1092
if getattr(self, "checker", None) is None:
553
1093
return
554
1094
logger.debug("Stopping checker for %(name)s", vars(self))
555
try:
556
os.kill(self.checker.pid, signal.SIGTERM)
557
#time.sleep(0.5)
558
#if self.checker.poll() is None:
559
# os.kill(self.checker.pid, signal.SIGKILL)
560
except OSError as error:
561
if error.errno != errno.ESRCH: # No such process
562
raise
1095
self.checker.terminate()
563
1096
self.checker = None
564
1097
565
def dbus_service_property(dbus_interface, signature="v",
566
access="readwrite", byte_arrays=False):
1098
1099
def dbus_service_property(dbus_interface,
1100
signature="v",
1101
access="readwrite",
1102
byte_arrays=False):
567
1103
"""Decorators for marking methods of a DBusObjectWithProperties to
568
1104
become properties on the D-Bus.
569
1105
578
1114
# "Set" method, so we fail early here:
579
1115
if byte_arrays and signature != "ay":
580
1116
raise ValueError("Byte arrays not supported for non-'ay'"
581
" signature %r" % signature)
1117
" signature {!r}".format(signature))
1118
582
1119
def decorator(func):
583
1120
func._dbus_is_property = True
584
1121
func._dbus_interface = dbus_interface
589
1126
func._dbus_name = func._dbus_name[:-14]
590
1127
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
591
1128
return func
1129
1130
return decorator
1131
1132
1133
def dbus_interface_annotations(dbus_interface):
1134
"""Decorator for marking functions returning interface annotations
1135
1136
Usage:
1137
1138
@dbus_interface_annotations("org.example.Interface")
1139
def _foo(self): # Function name does not matter
1140
return {"org.freedesktop.DBus.Deprecated": "true",
1141
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1142
"false"}
1143
"""
1144
1145
def decorator(func):
1146
func._dbus_is_interface = True
1147
func._dbus_interface = dbus_interface
1148
func._dbus_name = dbus_interface
1149
return func
1150
1151
return decorator
1152
1153
1154
def dbus_annotations(annotations):
1155
"""Decorator to annotate D-Bus methods, signals or properties
1156
Usage:
1157
1158
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1159
"org.freedesktop.DBus.Property."
1160
"EmitsChangedSignal": "false"})
1161
@dbus_service_property("org.example.Interface", signature="b",
1162
access="r")
1163
def Property_dbus_property(self):
1164
return dbus.Boolean(False)
1165
1166
See also the DBusObjectWithAnnotations class.
1167
"""
1168
1169
def decorator(func):
1170
func._dbus_annotations = annotations
1171
return func
1172
592
1173
return decorator
593
1174
594
1175
595
1176
class DBusPropertyException(dbus.exceptions.DBusException):
596
1177
"""A base class for D-Bus property-related exceptions
597
1178
"""
598
def __unicode__(self):
599
return unicode(str(self))
1179
pass
600
1180
601
1181
602
1182
class DBusPropertyAccessException(DBusPropertyException):
611
1191
pass
612
1192
613
1193
614
class DBusObjectWithProperties(dbus.service.Object):
1194
class DBusObjectWithAnnotations(dbus.service.Object):
1195
"""A D-Bus object with annotations.
1196
1197
Classes inheriting from this can use the dbus_annotations
1198
decorator to add annotations to methods or signals.
1199
"""
1200
1201
@staticmethod
1202
def _is_dbus_thing(thing):
1203
"""Returns a function testing if an attribute is a D-Bus thing
1204
1205
If called like _is_dbus_thing("method") it returns a function
1206
suitable for use as predicate to inspect.getmembers().
1207
"""
1208
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1209
False)
1210
1211
def _get_all_dbus_things(self, thing):
1212
"""Returns a generator of (name, attribute) pairs
1213
"""
1214
return ((getattr(athing.__get__(self), "_dbus_name", name),
1215
athing.__get__(self))
1216
for cls in self.__class__.__mro__
1217
for name, athing in
1218
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1219
1220
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1221
out_signature = "s",
1222
path_keyword = 'object_path',
1223
connection_keyword = 'connection')
1224
def Introspect(self, object_path, connection):
1225
"""Overloading of standard D-Bus method.
1226
1227
Inserts annotation tags on methods and signals.
1228
"""
1229
xmlstring = dbus.service.Object.Introspect(self, object_path,
1230
connection)
1231
try:
1232
document = xml.dom.minidom.parseString(xmlstring)
1233
1234
for if_tag in document.getElementsByTagName("interface"):
1235
# Add annotation tags
1236
for typ in ("method", "signal"):
1237
for tag in if_tag.getElementsByTagName(typ):
1238
annots = dict()
1239
for name, prop in (self.
1240
_get_all_dbus_things(typ)):
1241
if (name == tag.getAttribute("name")
1242
and prop._dbus_interface
1243
== if_tag.getAttribute("name")):
1244
annots.update(getattr(
1245
prop, "_dbus_annotations", {}))
1246
for name, value in annots.items():
1247
ann_tag = document.createElement(
1248
"annotation")
1249
ann_tag.setAttribute("name", name)
1250
ann_tag.setAttribute("value", value)
1251
tag.appendChild(ann_tag)
1252
# Add interface annotation tags
1253
for annotation, value in dict(
1254
itertools.chain.from_iterable(
1255
annotations().items()
1256
for name, annotations
1257
in self._get_all_dbus_things("interface")
1258
if name == if_tag.getAttribute("name")
1259
)).items():
1260
ann_tag = document.createElement("annotation")
1261
ann_tag.setAttribute("name", annotation)
1262
ann_tag.setAttribute("value", value)
1263
if_tag.appendChild(ann_tag)
1264
# Fix argument name for the Introspect method itself
1265
if (if_tag.getAttribute("name")
1266
== dbus.INTROSPECTABLE_IFACE):
1267
for cn in if_tag.getElementsByTagName("method"):
1268
if cn.getAttribute("name") == "Introspect":
1269
for arg in cn.getElementsByTagName("arg"):
1270
if (arg.getAttribute("direction")
1271
== "out"):
1272
arg.setAttribute("name",
1273
"xml_data")
1274
xmlstring = document.toxml("utf-8")
1275
document.unlink()
1276
except (AttributeError, xml.dom.DOMException,
1277
xml.parsers.expat.ExpatError) as error:
1278
logger.error("Failed to override Introspection method",
1279
exc_info=error)
1280
return xmlstring
1281
1282
1283
class DBusObjectWithProperties(DBusObjectWithAnnotations):
615
1284
"""A D-Bus object with properties.
616
1285
617
1286
Classes inheriting from this can use the dbus_service_property
618
1287
decorator to expose methods as D-Bus properties. It exposes the
619
1288
standard Get(), Set(), and GetAll() methods on the D-Bus.
620
1289
"""
621
1290
622
@staticmethod
623
def _is_dbus_property(obj):
624
return getattr(obj, "_dbus_is_property", False)
625
626
def _get_all_dbus_properties(self):
627
"""Returns a generator of (name, attribute) pairs
628
"""
629
return ((prop._dbus_name, prop)
630
for name, prop in
631
inspect.getmembers(self, self._is_dbus_property))
632
633
1291
def _get_dbus_property(self, interface_name, property_name):
634
1292
"""Returns a bound method if one exists which is a D-Bus
635
1293
property with the specified name and interface.
636
1294
"""
637
for name in (property_name,
638
property_name + "_dbus_property"):
639
prop = getattr(self, name, None)
640
if (prop is None
641
or not self._is_dbus_property(prop)
642
or prop._dbus_name != property_name
643
or (interface_name and prop._dbus_interface
644
and interface_name != prop._dbus_interface)):
645
continue
646
return prop
1295
for cls in self.__class__.__mro__:
1296
for name, value in inspect.getmembers(
1297
cls, self._is_dbus_thing("property")):
1298
if (value._dbus_name == property_name
1299
and value._dbus_interface == interface_name):
1300
return value.__get__(self)
1301
647
1302
# No such property
648
raise DBusPropertyNotFound(self.dbus_object_path + ":"
649
+ interface_name + "."
650
+ property_name)
651
652
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1303
raise DBusPropertyNotFound("{}:{}.{}".format(
1304
self.dbus_object_path, interface_name, property_name))
1305
1306
@classmethod
1307
def _get_all_interface_names(cls):
1308
"""Get a sequence of all interfaces supported by an object"""
1309
return (name for name in set(getattr(getattr(x, attr),
1310
"_dbus_interface", None)
1311
for x in (inspect.getmro(cls))
1312
for attr in dir(x))
1313
if name is not None)
1314
1315
@dbus.service.method(dbus.PROPERTIES_IFACE,
1316
in_signature="ss",
653
1317
out_signature="v")
654
1318
def Get(self, interface_name, property_name):
655
1319
"""Standard D-Bus property Get() method, see D-Bus standard.
673
1337
# The byte_arrays option is not supported yet on
674
1338
# signatures other than "ay".
675
1339
if prop._dbus_signature != "ay":
676
raise ValueError
677
value = dbus.ByteArray(''.join(unichr(byte)
678
for byte in value))
1340
raise ValueError("Byte arrays not supported for non-"
1341
"'ay' signature {!r}"
1342
.format(prop._dbus_signature))
1343
value = dbus.ByteArray(b''.join(chr(byte)
1344
for byte in value))
679
1345
prop(value)
680
1346
681
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1347
@dbus.service.method(dbus.PROPERTIES_IFACE,
1348
in_signature="s",
682
1349
out_signature="a{sv}")
683
1350
def GetAll(self, interface_name):
684
1351
"""Standard D-Bus property GetAll() method, see D-Bus
685
1352
standard.
686
1353
687
1354
Note: Will not include properties with access="write".
688
1355
"""
689
all = {}
690
for name, prop in self._get_all_dbus_properties():
1356
properties = {}
1357
for name, prop in self._get_all_dbus_things("property"):
691
1358
if (interface_name
692
1359
and interface_name != prop._dbus_interface):
693
1360
# Interface non-empty but did not match
697
1364
continue
698
1365
value = prop()
699
1366
if not hasattr(value, "variant_level"):
700
all[name] = value
1367
properties[name] = value
701
1368
continue
702
all[name] = type(value)(value, variant_level=
703
value.variant_level+1)
704
return dbus.Dictionary(all, signature="sv")
1369
properties[name] = type(value)(
1370
value, variant_level = value.variant_level + 1)
1371
return dbus.Dictionary(properties, signature="sv")
1372
1373
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1374
def PropertiesChanged(self, interface_name, changed_properties,
1375
invalidated_properties):
1376
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1377
standard.
1378
"""
1379
pass
705
1380
706
1381
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
707
1382
out_signature="s",
708
1383
path_keyword='object_path',
709
1384
connection_keyword='connection')
710
1385
def Introspect(self, object_path, connection):
711
"""Standard D-Bus method, overloaded to insert property tags.
1386
"""Overloading of standard D-Bus method.
1387
1388
Inserts property tags and interface annotation tags.
712
1389
"""
713
xmlstring = dbus.service.Object.Introspect(self, object_path,
714
connection)
1390
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1391
object_path,
1392
connection)
715
1393
try:
716
1394
document = xml.dom.minidom.parseString(xmlstring)
1395
717
1396
def make_tag(document, name, prop):
718
1397
e = document.createElement("property")
719
1398
e.setAttribute("name", name)
720
1399
e.setAttribute("type", prop._dbus_signature)
721
1400
e.setAttribute("access", prop._dbus_access)
722
1401
return e
1402
723
1403
for if_tag in document.getElementsByTagName("interface"):
1404
# Add property tags
724
1405
for tag in (make_tag(document, name, prop)
725
1406
for name, prop
726
in self._get_all_dbus_properties()
1407
in self._get_all_dbus_things("property")
727
1408
if prop._dbus_interface
728
1409
== if_tag.getAttribute("name")):
729
1410
if_tag.appendChild(tag)
1411
# Add annotation tags for properties
1412
for tag in if_tag.getElementsByTagName("property"):
1413
annots = dict()
1414
for name, prop in self._get_all_dbus_things(
1415
"property"):
1416
if (name == tag.getAttribute("name")
1417
and prop._dbus_interface
1418
== if_tag.getAttribute("name")):
1419
annots.update(getattr(
1420
prop, "_dbus_annotations", {}))
1421
for name, value in annots.items():
1422
ann_tag = document.createElement(
1423
"annotation")
1424
ann_tag.setAttribute("name", name)
1425
ann_tag.setAttribute("value", value)
1426
tag.appendChild(ann_tag)
730
1427
# Add the names to the return values for the
731
1428
# "org.freedesktop.DBus.Properties" methods
732
1429
if (if_tag.getAttribute("name")
747
1444
except (AttributeError, xml.dom.DOMException,
748
1445
xml.parsers.expat.ExpatError) as error:
749
1446
logger.error("Failed to override Introspection method",
750
error)
751
return xmlstring
752
753
1447
exc_info=error)
1448
return xmlstring
1449
1450
try:
1451
dbus.OBJECT_MANAGER_IFACE
1452
except AttributeError:
1453
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1454
1455
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1456
"""A D-Bus object with an ObjectManager.
1457
1458
Classes inheriting from this exposes the standard
1459
GetManagedObjects call and the InterfacesAdded and
1460
InterfacesRemoved signals on the standard
1461
"org.freedesktop.DBus.ObjectManager" interface.
1462
1463
Note: No signals are sent automatically; they must be sent
1464
manually.
1465
"""
1466
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1467
out_signature = "a{oa{sa{sv}}}")
1468
def GetManagedObjects(self):
1469
"""This function must be overridden"""
1470
raise NotImplementedError()
1471
1472
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1473
signature = "oa{sa{sv}}")
1474
def InterfacesAdded(self, object_path, interfaces_and_properties):
1475
pass
1476
1477
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature = "oas")
1478
def InterfacesRemoved(self, object_path, interfaces):
1479
pass
1480
1481
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1482
out_signature = "s",
1483
path_keyword = 'object_path',
1484
connection_keyword = 'connection')
1485
def Introspect(self, object_path, connection):
1486
"""Overloading of standard D-Bus method.
1487
1488
Override return argument name of GetManagedObjects to be
1489
"objpath_interfaces_and_properties"
1490
"""
1491
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1492
object_path,
1493
connection)
1494
try:
1495
document = xml.dom.minidom.parseString(xmlstring)
1496
1497
for if_tag in document.getElementsByTagName("interface"):
1498
# Fix argument name for the GetManagedObjects method
1499
if (if_tag.getAttribute("name")
1500
== dbus.OBJECT_MANAGER_IFACE):
1501
for cn in if_tag.getElementsByTagName("method"):
1502
if (cn.getAttribute("name")
1503
== "GetManagedObjects"):
1504
for arg in cn.getElementsByTagName("arg"):
1505
if (arg.getAttribute("direction")
1506
== "out"):
1507
arg.setAttribute(
1508
"name",
1509
"objpath_interfaces"
1510
"_and_properties")
1511
xmlstring = document.toxml("utf-8")
1512
document.unlink()
1513
except (AttributeError, xml.dom.DOMException,
1514
xml.parsers.expat.ExpatError) as error:
1515
logger.error("Failed to override Introspection method",
1516
exc_info = error)
1517
return xmlstring
1518
1519
def datetime_to_dbus(dt, variant_level=0):
1520
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1521
if dt is None:
1522
return dbus.String("", variant_level = variant_level)
1523
return dbus.String(dt.isoformat(), variant_level=variant_level)
1524
1525
1526
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1527
"""A class decorator; applied to a subclass of
1528
dbus.service.Object, it will add alternate D-Bus attributes with
1529
interface names according to the "alt_interface_names" mapping.
1530
Usage:
1531
1532
@alternate_dbus_interfaces({"org.example.Interface":
1533
"net.example.AlternateInterface"})
1534
class SampleDBusObject(dbus.service.Object):
1535
@dbus.service.method("org.example.Interface")
1536
def SampleDBusMethod():
1537
pass
1538
1539
The above "SampleDBusMethod" on "SampleDBusObject" will be
1540
reachable via two interfaces: "org.example.Interface" and
1541
"net.example.AlternateInterface", the latter of which will have
1542
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1543
"true", unless "deprecate" is passed with a False value.
1544
1545
This works for methods and signals, and also for D-Bus properties
1546
(from DBusObjectWithProperties) and interfaces (from the
1547
dbus_interface_annotations decorator).
1548
"""
1549
1550
def wrapper(cls):
1551
for orig_interface_name, alt_interface_name in (
1552
alt_interface_names.items()):
1553
attr = {}
1554
interface_names = set()
1555
# Go though all attributes of the class
1556
for attrname, attribute in inspect.getmembers(cls):
1557
# Ignore non-D-Bus attributes, and D-Bus attributes
1558
# with the wrong interface name
1559
if (not hasattr(attribute, "_dbus_interface")
1560
or not attribute._dbus_interface.startswith(
1561
orig_interface_name)):
1562
continue
1563
# Create an alternate D-Bus interface name based on
1564
# the current name
1565
alt_interface = attribute._dbus_interface.replace(
1566
orig_interface_name, alt_interface_name)
1567
interface_names.add(alt_interface)
1568
# Is this a D-Bus signal?
1569
if getattr(attribute, "_dbus_is_signal", False):
1570
# Extract the original non-method undecorated
1571
# function by black magic
1572
if sys.version_info.major == 2:
1573
nonmethod_func = (dict(
1574
zip(attribute.func_code.co_freevars,
1575
attribute.__closure__))
1576
["func"].cell_contents)
1577
else:
1578
nonmethod_func = (dict(
1579
zip(attribute.__code__.co_freevars,
1580
attribute.__closure__))
1581
["func"].cell_contents)
1582
# Create a new, but exactly alike, function
1583
# object, and decorate it to be a new D-Bus signal
1584
# with the alternate D-Bus interface name
1585
new_function = copy_function(nonmethod_func)
1586
new_function = (dbus.service.signal(
1587
alt_interface,
1588
attribute._dbus_signature)(new_function))
1589
# Copy annotations, if any
1590
try:
1591
new_function._dbus_annotations = dict(
1592
attribute._dbus_annotations)
1593
except AttributeError:
1594
pass
1595
# Define a creator of a function to call both the
1596
# original and alternate functions, so both the
1597
# original and alternate signals gets sent when
1598
# the function is called
1599
def fixscope(func1, func2):
1600
"""This function is a scope container to pass
1601
func1 and func2 to the "call_both" function
1602
outside of its arguments"""
1603
1604
@functools.wraps(func2)
1605
def call_both(*args, **kwargs):
1606
"""This function will emit two D-Bus
1607
signals by calling func1 and func2"""
1608
func1(*args, **kwargs)
1609
func2(*args, **kwargs)
1610
# Make wrapper function look like a D-Bus signal
1611
for name, attr in inspect.getmembers(func2):
1612
if name.startswith("_dbus_"):
1613
setattr(call_both, name, attr)
1614
1615
return call_both
1616
# Create the "call_both" function and add it to
1617
# the class
1618
attr[attrname] = fixscope(attribute, new_function)
1619
# Is this a D-Bus method?
1620
elif getattr(attribute, "_dbus_is_method", False):
1621
# Create a new, but exactly alike, function
1622
# object. Decorate it to be a new D-Bus method
1623
# with the alternate D-Bus interface name. Add it
1624
# to the class.
1625
attr[attrname] = (
1626
dbus.service.method(
1627
alt_interface,
1628
attribute._dbus_in_signature,
1629
attribute._dbus_out_signature)
1630
(copy_function(attribute)))
1631
# Copy annotations, if any
1632
try:
1633
attr[attrname]._dbus_annotations = dict(
1634
attribute._dbus_annotations)
1635
except AttributeError:
1636
pass
1637
# Is this a D-Bus property?
1638
elif getattr(attribute, "_dbus_is_property", False):
1639
# Create a new, but exactly alike, function
1640
# object, and decorate it to be a new D-Bus
1641
# property with the alternate D-Bus interface
1642
# name. Add it to the class.
1643
attr[attrname] = (dbus_service_property(
1644
alt_interface, attribute._dbus_signature,
1645
attribute._dbus_access,
1646
attribute._dbus_get_args_options
1647
["byte_arrays"])
1648
(copy_function(attribute)))
1649
# Copy annotations, if any
1650
try:
1651
attr[attrname]._dbus_annotations = dict(
1652
attribute._dbus_annotations)
1653
except AttributeError:
1654
pass
1655
# Is this a D-Bus interface?
1656
elif getattr(attribute, "_dbus_is_interface", False):
1657
# Create a new, but exactly alike, function
1658
# object. Decorate it to be a new D-Bus interface
1659
# with the alternate D-Bus interface name. Add it
1660
# to the class.
1661
attr[attrname] = (
1662
dbus_interface_annotations(alt_interface)
1663
(copy_function(attribute)))
1664
if deprecate:
1665
# Deprecate all alternate interfaces
1666
iname="_AlternateDBusNames_interface_annotation{}"
1667
for interface_name in interface_names:
1668
1669
@dbus_interface_annotations(interface_name)
1670
def func(self):
1671
return { "org.freedesktop.DBus.Deprecated":
1672
"true" }
1673
# Find an unused name
1674
for aname in (iname.format(i)
1675
for i in itertools.count()):
1676
if aname not in attr:
1677
attr[aname] = func
1678
break
1679
if interface_names:
1680
# Replace the class with a new subclass of it with
1681
# methods, signals, etc. as created above.
1682
if sys.version_info.major == 2:
1683
cls = type(b"{}Alternate".format(cls.__name__),
1684
(cls, ), attr)
1685
else:
1686
cls = type("{}Alternate".format(cls.__name__),
1687
(cls, ), attr)
1688
return cls
1689
1690
return wrapper
1691
1692
1693
@alternate_dbus_interfaces({"se.recompile.Mandos":
1694
"se.bsnet.fukt.Mandos"})
754
1695
class ClientDBus(Client, DBusObjectWithProperties):
755
1696
"""A Client class using D-Bus
756
1697
760
1701
"""
761
1702
762
1703
runtime_expansions = (Client.runtime_expansions
763
+ ("dbus_object_path",))
1704
+ ("dbus_object_path", ))
1705
1706
_interface = "se.recompile.Mandos.Client"
764
1707
765
1708
# dbus.service.Object doesn't use super(), so we can't either.
766
1709
767
1710
def __init__(self, bus = None, *args, **kwargs):
768
self._approvals_pending = 0
769
1711
self.bus = bus
770
1712
Client.__init__(self, *args, **kwargs)
771
1713
# Only now, when this client is initialized, can it show up on
772
1714
# the D-Bus
773
client_object_name = unicode(self.name).translate(
1715
client_object_name = str(self.name).translate(
774
1716
{ord("."): ord("_"),
775
1717
ord("-"): ord("_")})
776
self.dbus_object_path = (dbus.ObjectPath
777
("/clients/" + client_object_name))
1718
self.dbus_object_path = dbus.ObjectPath(
1719
"/clients/" + client_object_name)
778
1720
DBusObjectWithProperties.__init__(self, self.bus,
779
1721
self.dbus_object_path)
780
def _set_expires(self, value):
781
old_value = getattr(self, "_expires", None)
782
self._expires = value
783
if hasattr(self, "dbus_object_path") and old_value != value:
784
dbus_time = (self._datetime_to_dbus(self._expires,
785
variant_level=1))
786
self.PropertyChanged(dbus.String("Expires"),
787
dbus_time)
788
expires = property(lambda self: self._expires, _set_expires)
789
del _set_expires
790
791
def _get_approvals_pending(self):
792
return self._approvals_pending
793
def _set_approvals_pending(self, value):
794
old_value = self._approvals_pending
795
self._approvals_pending = value
796
bval = bool(value)
797
if (hasattr(self, "dbus_object_path")
798
and bval is not bool(old_value)):
799
dbus_bool = dbus.Boolean(bval, variant_level=1)
800
self.PropertyChanged(dbus.String("ApprovalPending"),
801
dbus_bool)
802
803
approvals_pending = property(_get_approvals_pending,
804
_set_approvals_pending)
805
del _get_approvals_pending, _set_approvals_pending
806
807
@staticmethod
808
def _datetime_to_dbus(dt, variant_level=0):
809
"""Convert a UTC datetime.datetime() to a D-Bus type."""
810
if dt is None:
811
return dbus.String("", variant_level = variant_level)
812
return dbus.String(dt.isoformat(),
813
variant_level=variant_level)
814
815
def enable(self):
816
oldstate = getattr(self, "enabled", False)
817
r = Client.enable(self)
818
if oldstate != self.enabled:
819
# Emit D-Bus signals
820
self.PropertyChanged(dbus.String("Enabled"),
821
dbus.Boolean(True, variant_level=1))
822
self.PropertyChanged(
823
dbus.String("LastEnabled"),
824
self._datetime_to_dbus(self.last_enabled,
825
variant_level=1))
826
return r
827
828
def disable(self, quiet = False):
829
oldstate = getattr(self, "enabled", False)
830
r = Client.disable(self, quiet=quiet)
831
if not quiet and oldstate != self.enabled:
832
# Emit D-Bus signal
833
self.PropertyChanged(dbus.String("Enabled"),
834
dbus.Boolean(False, variant_level=1))
835
return r
1722
1723
def notifychangeproperty(transform_func, dbus_name,
1724
type_func=lambda x: x,
1725
variant_level=1,
1726
invalidate_only=False,
1727
_interface=_interface):
1728
""" Modify a variable so that it's a property which announces
1729
its changes to DBus.
1730
1731
transform_fun: Function that takes a value and a variant_level
1732
and transforms it to a D-Bus type.
1733
dbus_name: D-Bus name of the variable
1734
type_func: Function that transform the value before sending it
1735
to the D-Bus. Default: no transform
1736
variant_level: D-Bus variant level. Default: 1
1737
"""
1738
attrname = "_{}".format(dbus_name)
1739
1740
def setter(self, value):
1741
if hasattr(self, "dbus_object_path"):
1742
if (not hasattr(self, attrname) or
1743
type_func(getattr(self, attrname, None))
1744
!= type_func(value)):
1745
if invalidate_only:
1746
self.PropertiesChanged(
1747
_interface, dbus.Dictionary(),
1748
dbus.Array((dbus_name, )))
1749
else:
1750
dbus_value = transform_func(
1751
type_func(value),
1752
variant_level = variant_level)
1753
self.PropertyChanged(dbus.String(dbus_name),
1754
dbus_value)
1755
self.PropertiesChanged(
1756
_interface,
1757
dbus.Dictionary({ dbus.String(dbus_name):
1758
dbus_value }),
1759
dbus.Array())
1760
setattr(self, attrname, value)
1761
1762
return property(lambda self: getattr(self, attrname), setter)
1763
1764
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1765
approvals_pending = notifychangeproperty(dbus.Boolean,
1766
"ApprovalPending",
1767
type_func = bool)
1768
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1769
last_enabled = notifychangeproperty(datetime_to_dbus,
1770
"LastEnabled")
1771
checker = notifychangeproperty(
1772
dbus.Boolean, "CheckerRunning",
1773
type_func = lambda checker: checker is not None)
1774
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1775
"LastCheckedOK")
1776
last_checker_status = notifychangeproperty(dbus.Int16,
1777
"LastCheckerStatus")
1778
last_approval_request = notifychangeproperty(
1779
datetime_to_dbus, "LastApprovalRequest")
1780
approved_by_default = notifychangeproperty(dbus.Boolean,
1781
"ApprovedByDefault")
1782
approval_delay = notifychangeproperty(
1783
dbus.UInt64, "ApprovalDelay",
1784
type_func = lambda td: td.total_seconds() * 1000)
1785
approval_duration = notifychangeproperty(
1786
dbus.UInt64, "ApprovalDuration",
1787
type_func = lambda td: td.total_seconds() * 1000)
1788
host = notifychangeproperty(dbus.String, "Host")
1789
timeout = notifychangeproperty(
1790
dbus.UInt64, "Timeout",
1791
type_func = lambda td: td.total_seconds() * 1000)
1792
extended_timeout = notifychangeproperty(
1793
dbus.UInt64, "ExtendedTimeout",
1794
type_func = lambda td: td.total_seconds() * 1000)
1795
interval = notifychangeproperty(
1796
dbus.UInt64, "Interval",
1797
type_func = lambda td: td.total_seconds() * 1000)
1798
checker_command = notifychangeproperty(dbus.String, "Checker")
1799
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1800
invalidate_only=True)
1801
1802
del notifychangeproperty
836
1803
837
1804
def __del__(self, *args, **kwargs):
838
1805
try:
843
1810
DBusObjectWithProperties.__del__(self, *args, **kwargs)
844
1811
Client.__del__(self, *args, **kwargs)
845
1812
846
def checker_callback(self, pid, condition, command,
847
*args, **kwargs):
848
self.checker_callback_tag = None
849
self.checker = None
850
# Emit D-Bus signal
851
self.PropertyChanged(dbus.String("CheckerRunning"),
852
dbus.Boolean(False, variant_level=1))
853
if os.WIFEXITED(condition):
854
exitstatus = os.WEXITSTATUS(condition)
1813
def checker_callback(self, source, condition,
1814
connection, command, *args, **kwargs):
1815
ret = Client.checker_callback(self, source, condition,
1816
connection, command, *args,
1817
**kwargs)
1818
exitstatus = self.last_checker_status
1819
if exitstatus >= 0:
855
1820
# Emit D-Bus signal
856
1821
self.CheckerCompleted(dbus.Int16(exitstatus),
857
dbus.Int64(condition),
1822
# This is specific to GNU libC
1823
dbus.Int64(exitstatus << 8),
858
1824
dbus.String(command))
859
1825
else:
860
1826
# Emit D-Bus signal
861
1827
self.CheckerCompleted(dbus.Int16(-1),
862
dbus.Int64(condition),
1828
dbus.Int64(
1829
# This is specific to GNU libC
1830
(exitstatus << 8)
1831
| self.last_checker_signal),
863
1832
dbus.String(command))
864
865
return Client.checker_callback(self, pid, condition, command,
866
*args, **kwargs)
867
868
def checked_ok(self, *args, **kwargs):
869
Client.checked_ok(self, *args, **kwargs)
870
# Emit D-Bus signal
871
self.PropertyChanged(
872
dbus.String("LastCheckedOK"),
873
(self._datetime_to_dbus(self.last_checked_ok,
874
variant_level=1)))
875
876
def need_approval(self, *args, **kwargs):
877
r = Client.need_approval(self, *args, **kwargs)
878
# Emit D-Bus signal
879
self.PropertyChanged(
880
dbus.String("LastApprovalRequest"),
881
(self._datetime_to_dbus(self.last_approval_request,
882
variant_level=1)))
883
return r
1833
return ret
884
1834
885
1835
def start_checker(self, *args, **kwargs):
886
old_checker = self.checker
887
if self.checker is not None:
888
old_checker_pid = self.checker.pid
889
else:
890
old_checker_pid = None
1836
old_checker_pid = getattr(self.checker, "pid", None)
891
1837
r = Client.start_checker(self, *args, **kwargs)
892
1838
# Only if new checker process was started
893
1839
if (self.checker is not None
894
1840
and old_checker_pid != self.checker.pid):
895
1841
# Emit D-Bus signal
896
1842
self.CheckerStarted(self.current_checker_command)
897
self.PropertyChanged(
898
dbus.String("CheckerRunning"),
899
dbus.Boolean(True, variant_level=1))
900
1843
return r
901
1844
902
def stop_checker(self, *args, **kwargs):
903
old_checker = getattr(self, "checker", None)
904
r = Client.stop_checker(self, *args, **kwargs)
905
if (old_checker is not None
906
and getattr(self, "checker", None) is None):
907
self.PropertyChanged(dbus.String("CheckerRunning"),
908
dbus.Boolean(False, variant_level=1))
909
return r
910
911
1845
def _reset_approved(self):
912
self._approved = None
1846
self.approved = None
913
1847
return False
914
1848
915
1849
def approve(self, value=True):
1850
self.approved = value
1851
GLib.timeout_add(int(self.approval_duration.total_seconds()
1852
* 1000), self._reset_approved)
916
1853
self.send_changedstate()
917
self._approved = value
918
gobject.timeout_add(self._timedelta_to_milliseconds
919
(self.approval_duration),
920
self._reset_approved)
921
922
1854
923
1855
## D-Bus methods, signals & properties
924
_interface = "se.bsnet.fukt.Mandos.Client"
1856
1857
## Interfaces
925
1858
926
1859
## Signals
927
1860
938
1871
pass
939
1872
940
1873
# PropertyChanged - signal
1874
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
941
1875
@dbus.service.signal(_interface, signature="sv")
942
1876
def PropertyChanged(self, property, value):
943
1877
"D-Bus signal"
977
1911
self.checked_ok()
978
1912
979
1913
# Enable - method
1914
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
980
1915
@dbus.service.method(_interface)
981
1916
def Enable(self):
982
1917
"D-Bus method"
983
1918
self.enable()
984
1919
985
1920
# StartChecker - method
1921
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
986
1922
@dbus.service.method(_interface)
987
1923
def StartChecker(self):
988
1924
"D-Bus method"
989
1925
self.start_checker()
990
1926
991
1927
# Disable - method
1928
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
992
1929
@dbus.service.method(_interface)
993
1930
def Disable(self):
994
1931
"D-Bus method"
995
1932
self.disable()
996
1933
997
1934
# StopChecker - method
1935
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
998
1936
@dbus.service.method(_interface)
999
1937
def StopChecker(self):
1000
1938
self.stop_checker()
1007
1945
return dbus.Boolean(bool(self.approvals_pending))
1008
1946
1009
1947
# ApprovedByDefault - property
1010
@dbus_service_property(_interface, signature="b",
1948
@dbus_service_property(_interface,
1949
signature="b",
1011
1950
access="readwrite")
1012
1951
def ApprovedByDefault_dbus_property(self, value=None):
1013
1952
if value is None: # get
1014
1953
return dbus.Boolean(self.approved_by_default)
1015
old_value = self.approved_by_default
1016
1954
self.approved_by_default = bool(value)
1017
# Emit D-Bus signal
1018
if old_value != self.approved_by_default:
1019
self.PropertyChanged(dbus.String("ApprovedByDefault"),
1020
dbus.Boolean(value, variant_level=1))
1021
1955
1022
1956
# ApprovalDelay - property
1023
@dbus_service_property(_interface, signature="t",
1957
@dbus_service_property(_interface,
1958
signature="t",
1024
1959
access="readwrite")
1025
1960
def ApprovalDelay_dbus_property(self, value=None):
1026
1961
if value is None: # get
1027
return dbus.UInt64(self.approval_delay_milliseconds())
1028
old_value = self.approval_delay
1962
return dbus.UInt64(self.approval_delay.total_seconds()
1963
* 1000)
1029
1964
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1030
# Emit D-Bus signal
1031
if old_value != self.approval_delay:
1032
self.PropertyChanged(dbus.String("ApprovalDelay"),
1033
dbus.UInt64(value, variant_level=1))
1034
1965
1035
1966
# ApprovalDuration - property
1036
@dbus_service_property(_interface, signature="t",
1967
@dbus_service_property(_interface,
1968
signature="t",
1037
1969
access="readwrite")
1038
1970
def ApprovalDuration_dbus_property(self, value=None):
1039
1971
if value is None: # get
1040
return dbus.UInt64(self._timedelta_to_milliseconds(
1041
self.approval_duration))
1042
old_value = self.approval_duration
1972
return dbus.UInt64(self.approval_duration.total_seconds()
1973
* 1000)
1043
1974
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1044
# Emit D-Bus signal
1045
if old_value != self.approval_duration:
1046
self.PropertyChanged(dbus.String("ApprovalDuration"),
1047
dbus.UInt64(value, variant_level=1))
1048
1975
1049
1976
# Name - property
1977
@dbus_annotations(
1978
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1050
1979
@dbus_service_property(_interface, signature="s", access="read")
1051
1980
def Name_dbus_property(self):
1052
1981
return dbus.String(self.name)
1053
1982
1054
1983
# Fingerprint - property
1984
@dbus_annotations(
1985
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1055
1986
@dbus_service_property(_interface, signature="s", access="read")
1056
1987
def Fingerprint_dbus_property(self):
1057
1988
return dbus.String(self.fingerprint)
1058
1989
1059
1990
# Host - property
1060
@dbus_service_property(_interface, signature="s",
1991
@dbus_service_property(_interface,
1992
signature="s",
1061
1993
access="readwrite")
1062
1994
def Host_dbus_property(self, value=None):
1063
1995
if value is None: # get
1064
1996
return dbus.String(self.host)
1065
old_value = self.host
1066
self.host = value
1067
# Emit D-Bus signal
1068
if old_value != self.host:
1069
self.PropertyChanged(dbus.String("Host"),
1070
dbus.String(value, variant_level=1))
1997
self.host = str(value)
1071
1998
1072
1999
# Created - property
2000
@dbus_annotations(
2001
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1073
2002
@dbus_service_property(_interface, signature="s", access="read")
1074
2003
def Created_dbus_property(self):
1075
return dbus.String(self._datetime_to_dbus(self.created))
2004
return datetime_to_dbus(self.created)
1076
2005
1077
2006
# LastEnabled - property
1078
2007
@dbus_service_property(_interface, signature="s", access="read")
1079
2008
def LastEnabled_dbus_property(self):
1080
return self._datetime_to_dbus(self.last_enabled)
2009
return datetime_to_dbus(self.last_enabled)
1081
2010
1082
2011
# Enabled - property
1083
@dbus_service_property(_interface, signature="b",
2012
@dbus_service_property(_interface,
2013
signature="b",
1084
2014
access="readwrite")
1085
2015
def Enabled_dbus_property(self, value=None):
1086
2016
if value is None: # get
1091
2021
self.disable()
1092
2022
1093
2023
# LastCheckedOK - property
1094
@dbus_service_property(_interface, signature="s",
2024
@dbus_service_property(_interface,
2025
signature="s",
1095
2026
access="readwrite")
1096
2027
def LastCheckedOK_dbus_property(self, value=None):
1097
2028
if value is not None:
1098
2029
self.checked_ok()
1099
2030
return
1100
return self._datetime_to_dbus(self.last_checked_ok)
2031
return datetime_to_dbus(self.last_checked_ok)
2032
2033
# LastCheckerStatus - property
2034
@dbus_service_property(_interface, signature="n", access="read")
2035
def LastCheckerStatus_dbus_property(self):
2036
return dbus.Int16(self.last_checker_status)
1101
2037
1102
2038
# Expires - property
1103
2039
@dbus_service_property(_interface, signature="s", access="read")
1104
2040
def Expires_dbus_property(self):
1105
return self._datetime_to_dbus(self.expires)
2041
return datetime_to_dbus(self.expires)
1106
2042
1107
2043
# LastApprovalRequest - property
1108
2044
@dbus_service_property(_interface, signature="s", access="read")
1109
2045
def LastApprovalRequest_dbus_property(self):
1110
return self._datetime_to_dbus(self.last_approval_request)
2046
return datetime_to_dbus(self.last_approval_request)
1111
2047
1112
2048
# Timeout - property
1113
@dbus_service_property(_interface, signature="t",
2049
@dbus_service_property(_interface,
2050
signature="t",
1114
2051
access="readwrite")
1115
2052
def Timeout_dbus_property(self, value=None):
1116
2053
if value is None: # get
1117
return dbus.UInt64(self.timeout_milliseconds())
1118
old_value = self.timeout
2054
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2055
old_timeout = self.timeout
1119
2056
self.timeout = datetime.timedelta(0, 0, 0, value)
1120
# Emit D-Bus signal
1121
if old_value != self.timeout:
1122
self.PropertyChanged(dbus.String("Timeout"),
1123
dbus.UInt64(value, variant_level=1))
1124
if getattr(self, "disable_initiator_tag", None) is None:
1125
return
1126
# Reschedule timeout
1127
gobject.source_remove(self.disable_initiator_tag)
1128
self.disable_initiator_tag = None
1129
self.expires = None
1130
time_to_die = (self.
1131
_timedelta_to_milliseconds((self
1132
.last_checked_ok
1133
+ self.timeout)
1134
- datetime.datetime
1135
.utcnow()))
1136
if time_to_die <= 0:
1137
# The timeout has passed
1138
self.disable()
1139
else:
1140
self.expires = (datetime.datetime.utcnow()
1141
+ datetime.timedelta(milliseconds = time_to_die))
1142
self.disable_initiator_tag = (gobject.timeout_add
1143
(time_to_die, self.disable))
1144
2057
# Reschedule disabling
2058
if self.enabled:
2059
now = datetime.datetime.utcnow()
2060
self.expires += self.timeout - old_timeout
2061
if self.expires <= now:
2062
# The timeout has passed
2063
self.disable()
2064
else:
2065
if (getattr(self, "disable_initiator_tag", None)
2066
is None):
2067
return
2068
GLib.source_remove(self.disable_initiator_tag)
2069
self.disable_initiator_tag = GLib.timeout_add(
2070
int((self.expires - now).total_seconds() * 1000),
2071
self.disable)
2072
1145
2073
# ExtendedTimeout - property
1146
@dbus_service_property(_interface, signature="t",
2074
@dbus_service_property(_interface,
2075
signature="t",
1147
2076
access="readwrite")
1148
2077
def ExtendedTimeout_dbus_property(self, value=None):
1149
2078
if value is None: # get
1150
return dbus.UInt64(self.extended_timeout_milliseconds())
1151
old_value = self.extended_timeout
2079
return dbus.UInt64(self.extended_timeout.total_seconds()
2080
* 1000)
1152
2081
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1153
# Emit D-Bus signal
1154
if old_value != self.extended_timeout:
1155
self.PropertyChanged(dbus.String("ExtendedTimeout"),
1156
dbus.UInt64(value, variant_level=1))
1157
2082
1158
2083
# Interval - property
1159
@dbus_service_property(_interface, signature="t",
2084
@dbus_service_property(_interface,
2085
signature="t",
1160
2086
access="readwrite")
1161
2087
def Interval_dbus_property(self, value=None):
1162
2088
if value is None: # get
1163
return dbus.UInt64(self.interval_milliseconds())
1164
old_value = self.interval
2089
return dbus.UInt64(self.interval.total_seconds() * 1000)
1165
2090
self.interval = datetime.timedelta(0, 0, 0, value)
1166
# Emit D-Bus signal
1167
if old_value != self.interval:
1168
self.PropertyChanged(dbus.String("Interval"),
1169
dbus.UInt64(value, variant_level=1))
1170
2091
if getattr(self, "checker_initiator_tag", None) is None:
1171
2092
return
1172
# Reschedule checker run
1173
gobject.source_remove(self.checker_initiator_tag)
1174
self.checker_initiator_tag = (gobject.timeout_add
1175
(value, self.start_checker))
1176
self.start_checker() # Start one now, too
1177
2093
if self.enabled:
2094
# Reschedule checker run
2095
GLib.source_remove(self.checker_initiator_tag)
2096
self.checker_initiator_tag = GLib.timeout_add(
2097
value, self.start_checker)
2098
self.start_checker() # Start one now, too
2099
1178
2100
# Checker - property
1179
@dbus_service_property(_interface, signature="s",
2101
@dbus_service_property(_interface,
2102
signature="s",
1180
2103
access="readwrite")
1181
2104
def Checker_dbus_property(self, value=None):
1182
2105
if value is None: # get
1183
2106
return dbus.String(self.checker_command)
1184
old_value = self.checker_command
1185
self.checker_command = value
1186
# Emit D-Bus signal
1187
if old_value != self.checker_command:
1188
self.PropertyChanged(dbus.String("Checker"),
1189
dbus.String(self.checker_command,
1190
variant_level=1))
2107
self.checker_command = str(value)
1191
2108
1192
2109
# CheckerRunning - property
1193
@dbus_service_property(_interface, signature="b",
2110
@dbus_service_property(_interface,
2111
signature="b",
1194
2112
access="readwrite")
1195
2113
def CheckerRunning_dbus_property(self, value=None):
1196
2114
if value is None: # get
1201
2119
self.stop_checker()
1202
2120
1203
2121
# ObjectPath - property
2122
@dbus_annotations(
2123
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2124
"org.freedesktop.DBus.Deprecated": "true"})
1204
2125
@dbus_service_property(_interface, signature="o", access="read")
1205
2126
def ObjectPath_dbus_property(self):
1206
2127
return self.dbus_object_path # is already a dbus.ObjectPath
1207
2128
1208
2129
# Secret = property
1209
@dbus_service_property(_interface, signature="ay",
1210
access="write", byte_arrays=True)
2130
@dbus_annotations(
2131
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2132
"invalidates"})
2133
@dbus_service_property(_interface,
2134
signature="ay",
2135
access="write",
2136
byte_arrays=True)
1211
2137
def Secret_dbus_property(self, value):
1212
self.secret = str(value)
2138
self.secret = bytes(value)
1213
2139
1214
2140
del _interface
1215
2141
1219
2145
self._pipe = child_pipe
1220
2146
self._pipe.send(('init', fpr, address))
1221
2147
if not self._pipe.recv():
1222
raise KeyError()
1223
2148
raise KeyError(fpr)
2149
1224
2150
def __getattribute__(self, name):
1225
if(name == '_pipe'):
2151
if name == '_pipe':
1226
2152
return super(ProxyClient, self).__getattribute__(name)
1227
2153
self._pipe.send(('getattr', name))
1228
2154
data = self._pipe.recv()
1229
2155
if data[0] == 'data':
1230
2156
return data[1]
1231
2157
if data[0] == 'function':
2158
1232
2159
def func(*args, **kwargs):
1233
2160
self._pipe.send(('funcall', name, args, kwargs))
1234
2161
return self._pipe.recv()[1]
2162
1235
2163
return func
1236
2164
1237
2165
def __setattr__(self, name, value):
1238
if(name == '_pipe'):
2166
if name == '_pipe':
1239
2167
return super(ProxyClient, self).__setattr__(name, value)
1240
2168
self._pipe.send(('setattr', name, value))
1241
2169
1249
2177
def handle(self):
1250
2178
with contextlib.closing(self.server.child_pipe) as child_pipe:
1251
2179
logger.info("TCP connection from: %s",
1252
unicode(self.client_address))
2180
str(self.client_address))
1253
2181
logger.debug("Pipe FD: %d",
1254
2182
self.server.child_pipe.fileno())
1255
1256
session = (gnutls.connection
1257
.ClientSession(self.request,
1258
gnutls.connection
1259
.X509Credentials()))
1260
1261
# Note: gnutls.connection.X509Credentials is really a
1262
# generic GnuTLS certificate credentials object so long as
1263
# no X.509 keys are added to it. Therefore, we can use it
1264
# here despite using OpenPGP certificates.
1265
2183
2184
session = gnutls.ClientSession(self.request)
2185
1266
2186
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1267
2187
# "+AES-256-CBC", "+SHA1",
1268
2188
# "+COMP-NULL", "+CTYPE-OPENPGP",
1271
2191
priority = self.server.gnutls_priority
1272
2192
if priority is None:
1273
2193
priority = "NORMAL"
1274
(gnutls.library.functions
1275
.gnutls_priority_set_direct(session._c_object,
1276
priority, None))
1277
2194
gnutls.priority_set_direct(session._c_object,
2195
priority.encode("utf-8"),
2196
None)
2197
1278
2198
# Start communication using the Mandos protocol
1279
2199
# Get protocol number
1280
2200
line = self.request.makefile().readline()
1281
2201
logger.debug("Protocol version: %r", line)
1282
2202
try:
1283
2203
if int(line.strip().split()[0]) > 1:
1284
raise RuntimeError
2204
raise RuntimeError(line)
1285
2205
except (ValueError, IndexError, RuntimeError) as error:
1286
2206
logger.error("Unknown protocol version: %s", error)
1287
2207
return
1288
2208
1289
2209
# Start GnuTLS connection
1290
2210
try:
1291
2211
session.handshake()
1292
except gnutls.errors.GNUTLSError as error:
2212
except gnutls.Error as error:
1293
2213
logger.warning("Handshake failed: %s", error)
1294
2214
# Do not run session.bye() here: the session is not
1295
2215
# established. Just abandon the request.
1296
2216
return
1297
2217
logger.debug("Handshake succeeded")
1298
2218
1299
2219
approval_required = False
1300
2220
try:
1301
2221
try:
1302
fpr = self.fingerprint(self.peer_certificate
1303
(session))
1304
except (TypeError,
1305
gnutls.errors.GNUTLSError) as error:
2222
fpr = self.fingerprint(
2223
self.peer_certificate(session))
2224
except (TypeError, gnutls.Error) as error:
1306
2225
logger.warning("Bad certificate: %s", error)
1307
2226
return
1308
2227
logger.debug("Fingerprint: %s", fpr)
1309
2228
1310
2229
try:
1311
2230
client = ProxyClient(child_pipe, fpr,
1312
2231
self.client_address)
1321
2240
while True:
1322
2241
if not client.enabled:
1323
2242
logger.info("Client %s is disabled",
1324
client.name)
2243
client.name)
1325
2244
if self.server.use_dbus:
1326
2245
# Emit D-Bus signal
1327
client.Rejected("Disabled")
2246
client.Rejected("Disabled")
1328
2247
return
1329
2248
1330
if client._approved or not client.approval_delay:
2249
if client.approved or not client.approval_delay:
1331
2250
#We are approved or approval is disabled
1332
2251
break
1333
elif client._approved is None:
2252
elif client.approved is None:
1334
2253
logger.info("Client %s needs approval",
1335
2254
client.name)
1336
2255
if self.server.use_dbus:
1337
2256
# Emit D-Bus signal
1338
2257
client.NeedApproval(
1339
client.approval_delay_milliseconds(),
1340
client.approved_by_default)
2258
client.approval_delay.total_seconds()
2259
* 1000, client.approved_by_default)
1341
2260
else:
1342
2261
logger.warning("Client %s was not approved",
1343
2262
client.name)
1347
2266
return
1348
2267
1349
2268
#wait until timeout or approved
1350
#x = float(client._timedelta_to_milliseconds(delay))
1351
2269
time = datetime.datetime.now()
1352
2270
client.changedstate.acquire()
1353
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
2271
client.changedstate.wait(delay.total_seconds())
1354
2272
client.changedstate.release()
1355
2273
time2 = datetime.datetime.now()
1356
2274
if (time2 - time) >= delay:
1367
2285
else:
1368
2286
delay -= time2 - time
1369
2287
1370
sent_size = 0
1371
while sent_size < len(client.secret):
1372
try:
1373
sent = session.send(client.secret[sent_size:])
1374
except gnutls.errors.GNUTLSError as error:
1375
logger.warning("gnutls send failed")
1376
return
1377
logger.debug("Sent: %d, remaining: %d",
1378
sent, len(client.secret)
1379
- (sent_size + sent))
1380
sent_size += sent
1381
2288
try:
2289
session.send(client.secret)
2290
except gnutls.Error as error:
2291
logger.warning("gnutls send failed",
2292
exc_info = error)
2293
return
2294
1382
2295
logger.info("Sending secret to %s", client.name)
1383
# bump the timeout as if seen
1384
client.checked_ok(client.extended_timeout)
2296
# bump the timeout using extended_timeout
2297
client.bump_timeout(client.extended_timeout)
1385
2298
if self.server.use_dbus:
1386
2299
# Emit D-Bus signal
1387
2300
client.GotSecret()
1391
2304
client.approvals_pending -= 1
1392
2305
try:
1393
2306
session.bye()
1394
except gnutls.errors.GNUTLSError as error:
1395
logger.warning("GnuTLS bye failed")
2307
except gnutls.Error as error:
2308
logger.warning("GnuTLS bye failed",
2309
exc_info=error)
1396
2310
1397
2311
@staticmethod
1398
2312
def peer_certificate(session):
1399
2313
"Return the peer's OpenPGP certificate as a bytestring"
1400
2314
# If not an OpenPGP certificate...
1401
if (gnutls.library.functions
1402
.gnutls_certificate_type_get(session._c_object)
1403
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1404
# ...do the normal thing
1405
return session.peer_certificate
2315
if (gnutls.certificate_type_get(session._c_object)
2316
!= gnutls.CRT_OPENPGP):
2317
# ...return invalid data
2318
return b""
1406
2319
list_size = ctypes.c_uint(1)
1407
cert_list = (gnutls.library.functions
1408
.gnutls_certificate_get_peers
2320
cert_list = (gnutls.certificate_get_peers
1409
2321
(session._c_object, ctypes.byref(list_size)))
1410
2322
if not bool(cert_list) and list_size.value != 0:
1411
raise gnutls.errors.GNUTLSError("error getting peer"
1412
" certificate")
2323
raise gnutls.Error("error getting peer certificate")
1413
2324
if list_size.value == 0:
1414
2325
return None
1415
2326
cert = cert_list[0]
1419
2330
def fingerprint(openpgp):
1420
2331
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1421
2332
# New GnuTLS "datum" with the OpenPGP public key
1422
datum = (gnutls.library.types
1423
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1424
ctypes.POINTER
1425
(ctypes.c_ubyte)),
1426
ctypes.c_uint(len(openpgp))))
2333
datum = gnutls.datum_t(
2334
ctypes.cast(ctypes.c_char_p(openpgp),
2335
ctypes.POINTER(ctypes.c_ubyte)),
2336
ctypes.c_uint(len(openpgp)))
1427
2337
# New empty GnuTLS certificate
1428
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1429
(gnutls.library.functions
1430
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2338
crt = gnutls.openpgp_crt_t()
2339
gnutls.openpgp_crt_init(ctypes.byref(crt))
1431
2340
# Import the OpenPGP public key into the certificate
1432
(gnutls.library.functions
1433
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1434
gnutls.library.constants
1435
.GNUTLS_OPENPGP_FMT_RAW))
2341
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2342
gnutls.OPENPGP_FMT_RAW)
1436
2343
# Verify the self signature in the key
1437
2344
crtverify = ctypes.c_uint()
1438
(gnutls.library.functions
1439
.gnutls_openpgp_crt_verify_self(crt, 0,
1440
ctypes.byref(crtverify)))
2345
gnutls.openpgp_crt_verify_self(crt, 0,
2346
ctypes.byref(crtverify))
1441
2347
if crtverify.value != 0:
1442
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1443
raise (gnutls.errors.CertificateSecurityError
1444
("Verify failed"))
2348
gnutls.openpgp_crt_deinit(crt)
2349
raise gnutls.CertificateSecurityError("Verify failed")
1445
2350
# New buffer for the fingerprint
1446
2351
buf = ctypes.create_string_buffer(20)
1447
2352
buf_len = ctypes.c_size_t()
1448
2353
# Get the fingerprint from the certificate into the buffer
1449
(gnutls.library.functions
1450
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1451
ctypes.byref(buf_len)))
2354
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2355
ctypes.byref(buf_len))
1452
2356
# Deinit the certificate
1453
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2357
gnutls.openpgp_crt_deinit(crt)
1454
2358
# Convert the buffer to a Python bytestring
1455
2359
fpr = ctypes.string_at(buf, buf_len.value)
1456
2360
# Convert the bytestring to hexadecimal notation
1457
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
2361
hex_fpr = binascii.hexlify(fpr).upper()
1458
2362
return hex_fpr
1459
2363
1460
2364
1461
2365
class MultiprocessingMixIn(object):
1462
2366
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2367
1463
2368
def sub_process_main(self, request, address):
1464
2369
try:
1465
2370
self.finish_request(request, address)
1466
except:
2371
except Exception:
1467
2372
self.handle_error(request, address)
1468
2373
self.close_request(request)
1469
2374
1470
2375
def process_request(self, request, address):
1471
2376
"""Start a new process to process the request."""
1472
multiprocessing.Process(target = self.sub_process_main,
1473
args = (request, address)).start()
2377
proc = multiprocessing.Process(target = self.sub_process_main,
2378
args = (request, address))
2379
proc.start()
2380
return proc
2381
1474
2382
1475
2383
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1476
2384
""" adds a pipe to the MixIn """
2385
1477
2386
def process_request(self, request, client_address):
1478
2387
"""Overrides and wraps the original process_request().
1479
2388
1480
2389
This function creates a new pipe in self.pipe
1481
2390
"""
1482
2391
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1483
1484
super(MultiprocessingMixInWithPipe,
1485
self).process_request(request, client_address)
2392
2393
proc = MultiprocessingMixIn.process_request(self, request,
2394
client_address)
1486
2395
self.child_pipe.close()
1487
self.add_pipe(parent_pipe)
1488
1489
def add_pipe(self, parent_pipe):
2396
self.add_pipe(parent_pipe, proc)
2397
2398
def add_pipe(self, parent_pipe, proc):
1490
2399
"""Dummy function; override as necessary"""
1491
raise NotImplementedError
2400
raise NotImplementedError()
2401
1492
2402
1493
2403
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1494
2404
socketserver.TCPServer, object):
1499
2409
interface: None or a network interface name (string)
1500
2410
use_ipv6: Boolean; to use IPv6 or not
1501
2411
"""
2412
1502
2413
def __init__(self, server_address, RequestHandlerClass,
1503
interface=None, use_ipv6=True):
2414
interface=None,
2415
use_ipv6=True,
2416
socketfd=None):
2417
"""If socketfd is set, use that file descriptor instead of
2418
creating a new one with socket.socket().
2419
"""
1504
2420
self.interface = interface
1505
2421
if use_ipv6:
1506
2422
self.address_family = socket.AF_INET6
2423
if socketfd is not None:
2424
# Save the file descriptor
2425
self.socketfd = socketfd
2426
# Save the original socket.socket() function
2427
self.socket_socket = socket.socket
2428
# To implement --socket, we monkey patch socket.socket.
2429
#
2430
# (When socketserver.TCPServer is a new-style class, we
2431
# could make self.socket into a property instead of monkey
2432
# patching socket.socket.)
2433
#
2434
# Create a one-time-only replacement for socket.socket()
2435
@functools.wraps(socket.socket)
2436
def socket_wrapper(*args, **kwargs):
2437
# Restore original function so subsequent calls are
2438
# not affected.
2439
socket.socket = self.socket_socket
2440
del self.socket_socket
2441
# This time only, return a new socket object from the
2442
# saved file descriptor.
2443
return socket.fromfd(self.socketfd, *args, **kwargs)
2444
# Replace socket.socket() function with wrapper
2445
socket.socket = socket_wrapper
2446
# The socketserver.TCPServer.__init__ will call
2447
# socket.socket(), which might be our replacement,
2448
# socket_wrapper(), if socketfd was set.
1507
2449
socketserver.TCPServer.__init__(self, server_address,
1508
2450
RequestHandlerClass)
2451
1509
2452
def server_bind(self):
1510
2453
"""This overrides the normal server_bind() function
1511
2454
to bind to an interface if one was specified, and also NOT to
1512
2455
bind to an address or port if they were not specified."""
2456
global SO_BINDTODEVICE
1513
2457
if self.interface is not None:
1514
2458
if SO_BINDTODEVICE is None:
1515
logger.error("SO_BINDTODEVICE does not exist;"
1516
" cannot bind to interface %s",
1517
self.interface)
1518
else:
1519
try:
1520
self.socket.setsockopt(socket.SOL_SOCKET,
1521
SO_BINDTODEVICE,
1522
str(self.interface
1523
+ '\0'))
1524
except socket.error as error:
1525
if error[0] == errno.EPERM:
1526
logger.error("No permission to"
1527
" bind to interface %s",
1528
self.interface)
1529
elif error[0] == errno.ENOPROTOOPT:
1530
logger.error("SO_BINDTODEVICE not available;"
1531
" cannot bind to interface %s",
1532
self.interface)
1533
else:
1534
raise
2459
# Fall back to a hard-coded value which seems to be
2460
# common enough.
2461
logger.warning("SO_BINDTODEVICE not found, trying 25")
2462
SO_BINDTODEVICE = 25
2463
try:
2464
self.socket.setsockopt(
2465
socket.SOL_SOCKET, SO_BINDTODEVICE,
2466
(self.interface + "\0").encode("utf-8"))
2467
except socket.error as error:
2468
if error.errno == errno.EPERM:
2469
logger.error("No permission to bind to"
2470
" interface %s", self.interface)
2471
elif error.errno == errno.ENOPROTOOPT:
2472
logger.error("SO_BINDTODEVICE not available;"
2473
" cannot bind to interface %s",
2474
self.interface)
2475
elif error.errno == errno.ENODEV:
2476
logger.error("Interface %s does not exist,"
2477
" cannot bind", self.interface)
2478
else:
2479
raise
1535
2480
# Only bind(2) the socket if we really need to.
1536
2481
if self.server_address[0] or self.server_address[1]:
1537
2482
if not self.server_address[0]:
1538
2483
if self.address_family == socket.AF_INET6:
1539
2484
any_address = "::" # in6addr_any
1540
2485
else:
1541
any_address = socket.INADDR_ANY
2486
any_address = "0.0.0.0" # INADDR_ANY
1542
2487
self.server_address = (any_address,
1543
2488
self.server_address[1])
1544
2489
elif not self.server_address[1]:
1545
self.server_address = (self.server_address[0],
1546
0)
2490
self.server_address = (self.server_address[0], 0)
1547
2491
# if self.interface:
1548
2492
# self.server_address = (self.server_address[0],
1549
2493
# 0, # port
1561
2505
gnutls_priority GnuTLS priority string
1562
2506
use_dbus: Boolean; to emit D-Bus signals or not
1563
2507
1564
Assumes a gobject.MainLoop event loop.
2508
Assumes a GLib.MainLoop event loop.
1565
2509
"""
2510
1566
2511
def __init__(self, server_address, RequestHandlerClass,
1567
interface=None, use_ipv6=True, clients=None,
1568
gnutls_priority=None, use_dbus=True):
2512
interface=None,
2513
use_ipv6=True,
2514
clients=None,
2515
gnutls_priority=None,
2516
use_dbus=True,
2517
socketfd=None):
1569
2518
self.enabled = False
1570
2519
self.clients = clients
1571
2520
if self.clients is None:
1572
self.clients = set()
2521
self.clients = {}
1573
2522
self.use_dbus = use_dbus
1574
2523
self.gnutls_priority = gnutls_priority
1575
2524
IPv6_TCPServer.__init__(self, server_address,
1576
2525
RequestHandlerClass,
1577
2526
interface = interface,
1578
use_ipv6 = use_ipv6)
2527
use_ipv6 = use_ipv6,
2528
socketfd = socketfd)
2529
1579
2530
def server_activate(self):
1580
2531
if self.enabled:
1581
2532
return socketserver.TCPServer.server_activate(self)
2533
1582
2534
def enable(self):
1583
2535
self.enabled = True
1584
def add_pipe(self, parent_pipe):
2536
2537
def add_pipe(self, parent_pipe, proc):
1585
2538
# Call "handle_ipc" for both data and EOF events
1586
gobject.io_add_watch(parent_pipe.fileno(),
1587
gobject.IO_IN | gobject.IO_HUP,
1588
functools.partial(self.handle_ipc,
1589
parent_pipe = parent_pipe))
1590
1591
def handle_ipc(self, source, condition, parent_pipe=None,
2539
GLib.io_add_watch(
2540
parent_pipe.fileno(),
2541
GLib.IO_IN | GLib.IO_HUP,
2542
functools.partial(self.handle_ipc,
2543
parent_pipe = parent_pipe,
2544
proc = proc))
2545
2546
def handle_ipc(self, source, condition,
2547
parent_pipe=None,
2548
proc = None,
1592
2549
client_object=None):
1593
condition_names = {
1594
gobject.IO_IN: "IN", # There is data to read.
1595
gobject.IO_OUT: "OUT", # Data can be written (without
1596
# blocking).
1597
gobject.IO_PRI: "PRI", # There is urgent data to read.
1598
gobject.IO_ERR: "ERR", # Error condition.
1599
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1600
# broken, usually for pipes and
1601
# sockets).
1602
}
1603
conditions_string = ' | '.join(name
1604
for cond, name in
1605
condition_names.iteritems()
1606
if cond & condition)
1607
# error or the other end of multiprocessing.Pipe has closed
1608
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2550
# error, or the other end of multiprocessing.Pipe has closed
2551
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2552
# Wait for other process to exit
2553
proc.join()
1609
2554
return False
1610
2555
1611
2556
# Read a request from the child
1616
2561
fpr = request[1]
1617
2562
address = request[2]
1618
2563
1619
for c in self.clients:
2564
for c in self.clients.values():
1620
2565
if c.fingerprint == fpr:
1621
2566
client = c
1622
2567
break
1625
2570
"dress: %s", fpr, address)
1626
2571
if self.use_dbus:
1627
2572
# Emit D-Bus signal
1628
mandos_dbus_service.ClientNotFound(fpr, address[0])
2573
mandos_dbus_service.ClientNotFound(fpr,
2574
address[0])
1629
2575
parent_pipe.send(False)
1630
2576
return False
1631
2577
1632
gobject.io_add_watch(parent_pipe.fileno(),
1633
gobject.IO_IN | gobject.IO_HUP,
1634
functools.partial(self.handle_ipc,
1635
parent_pipe = parent_pipe,
1636
client_object = client))
2578
GLib.io_add_watch(
2579
parent_pipe.fileno(),
2580
GLib.IO_IN | GLib.IO_HUP,
2581
functools.partial(self.handle_ipc,
2582
parent_pipe = parent_pipe,
2583
proc = proc,
2584
client_object = client))
1637
2585
parent_pipe.send(True)
1638
# remove the old hook in favor of the new above hook on same fileno
2586
# remove the old hook in favor of the new above hook on
2587
# same fileno
1639
2588
return False
1640
2589
if command == 'funcall':
1641
2590
funcname = request[1]
1642
2591
args = request[2]
1643
2592
kwargs = request[3]
1644
2593
1645
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
1646
2594
parent_pipe.send(('data', getattr(client_object,
2595
funcname)(*args,
2596
**kwargs)))
2597
1647
2598
if command == 'getattr':
1648
2599
attrname = request[1]
1649
if callable(client_object.__getattribute__(attrname)):
1650
parent_pipe.send(('function',))
2600
if isinstance(client_object.__getattribute__(attrname),
2601
collections.Callable):
2602
parent_pipe.send(('function', ))
1651
2603
else:
1652
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
2604
parent_pipe.send((
2605
'data', client_object.__getattribute__(attrname)))
1653
2606
1654
2607
if command == 'setattr':
1655
2608
attrname = request[1]
1656
2609
value = request[2]
1657
2610
setattr(client_object, attrname, value)
1658
2611
1659
2612
return True
1660
2613
1661
2614
2615
def rfc3339_duration_to_delta(duration):
2616
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2617
2618
>>> rfc3339_duration_to_delta("P7D")
2619
datetime.timedelta(7)
2620
>>> rfc3339_duration_to_delta("PT60S")
2621
datetime.timedelta(0, 60)
2622
>>> rfc3339_duration_to_delta("PT60M")
2623
datetime.timedelta(0, 3600)
2624
>>> rfc3339_duration_to_delta("PT24H")
2625
datetime.timedelta(1)
2626
>>> rfc3339_duration_to_delta("P1W")
2627
datetime.timedelta(7)
2628
>>> rfc3339_duration_to_delta("PT5M30S")
2629
datetime.timedelta(0, 330)
2630
>>> rfc3339_duration_to_delta("P1DT3M20S")
2631
datetime.timedelta(1, 200)
2632
"""
2633
2634
# Parsing an RFC 3339 duration with regular expressions is not
2635
# possible - there would have to be multiple places for the same
2636
# values, like seconds. The current code, while more esoteric, is
2637
# cleaner without depending on a parsing library. If Python had a
2638
# built-in library for parsing we would use it, but we'd like to
2639
# avoid excessive use of external libraries.
2640
2641
# New type for defining tokens, syntax, and semantics all-in-one
2642
Token = collections.namedtuple("Token", (
2643
"regexp", # To match token; if "value" is not None, must have
2644
# a "group" containing digits
2645
"value", # datetime.timedelta or None
2646
"followers")) # Tokens valid after this token
2647
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2648
# the "duration" ABNF definition in RFC 3339, Appendix A.
2649
token_end = Token(re.compile(r"$"), None, frozenset())
2650
token_second = Token(re.compile(r"(\d+)S"),
2651
datetime.timedelta(seconds=1),
2652
frozenset((token_end, )))
2653
token_minute = Token(re.compile(r"(\d+)M"),
2654
datetime.timedelta(minutes=1),
2655
frozenset((token_second, token_end)))
2656
token_hour = Token(re.compile(r"(\d+)H"),
2657
datetime.timedelta(hours=1),
2658
frozenset((token_minute, token_end)))
2659
token_time = Token(re.compile(r"T"),
2660
None,
2661
frozenset((token_hour, token_minute,
2662
token_second)))
2663
token_day = Token(re.compile(r"(\d+)D"),
2664
datetime.timedelta(days=1),
2665
frozenset((token_time, token_end)))
2666
token_month = Token(re.compile(r"(\d+)M"),
2667
datetime.timedelta(weeks=4),
2668
frozenset((token_day, token_end)))
2669
token_year = Token(re.compile(r"(\d+)Y"),
2670
datetime.timedelta(weeks=52),
2671
frozenset((token_month, token_end)))
2672
token_week = Token(re.compile(r"(\d+)W"),
2673
datetime.timedelta(weeks=1),
2674
frozenset((token_end, )))
2675
token_duration = Token(re.compile(r"P"), None,
2676
frozenset((token_year, token_month,
2677
token_day, token_time,
2678
token_week)))
2679
# Define starting values
2680
value = datetime.timedelta() # Value so far
2681
found_token = None
2682
followers = frozenset((token_duration, )) # Following valid tokens
2683
s = duration # String left to parse
2684
# Loop until end token is found
2685
while found_token is not token_end:
2686
# Search for any currently valid tokens
2687
for token in followers:
2688
match = token.regexp.match(s)
2689
if match is not None:
2690
# Token found
2691
if token.value is not None:
2692
# Value found, parse digits
2693
factor = int(match.group(1), 10)
2694
# Add to value so far
2695
value += factor * token.value
2696
# Strip token from string
2697
s = token.regexp.sub("", s, 1)
2698
# Go to found token
2699
found_token = token
2700
# Set valid next tokens
2701
followers = found_token.followers
2702
break
2703
else:
2704
# No currently valid tokens were found
2705
raise ValueError("Invalid RFC 3339 duration: {!r}"
2706
.format(duration))
2707
# End token found
2708
return value
2709
2710
1662
2711
def string_to_delta(interval):
1663
2712
"""Parse a string and return a datetime.timedelta
1664
2713
1675
2724
>>> string_to_delta('5m 30s')
1676
2725
datetime.timedelta(0, 330)
1677
2726
"""
2727
2728
try:
2729
return rfc3339_duration_to_delta(interval)
2730
except ValueError:
2731
pass
2732
1678
2733
timevalue = datetime.timedelta(0)
1679
2734
for s in interval.split():
1680
2735
try:
1681
suffix = unicode(s[-1])
2736
suffix = s[-1]
1682
2737
value = int(s[:-1])
1683
2738
if suffix == "d":
1684
2739
delta = datetime.timedelta(value)
1691
2746
elif suffix == "w":
1692
2747
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1693
2748
else:
1694
raise ValueError("Unknown suffix %r" % suffix)
1695
except (ValueError, IndexError) as e:
2749
raise ValueError("Unknown suffix {!r}".format(suffix))
2750
except IndexError as e:
1696
2751
raise ValueError(*(e.args))
1697
2752
timevalue += delta
1698
2753
return timevalue
1699
2754
1700
2755
1701
def if_nametoindex(interface):
1702
"""Call the C function if_nametoindex(), or equivalent
1703
1704
Note: This function cannot accept a unicode string."""
1705
global if_nametoindex
1706
try:
1707
if_nametoindex = (ctypes.cdll.LoadLibrary
1708
(ctypes.util.find_library("c"))
1709
.if_nametoindex)
1710
except (OSError, AttributeError):
1711
logger.warning("Doing if_nametoindex the hard way")
1712
def if_nametoindex(interface):
1713
"Get an interface index the hard way, i.e. using fcntl()"
1714
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1715
with contextlib.closing(socket.socket()) as s:
1716
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1717
struct.pack(str("16s16x"),
1718
interface))
1719
interface_index = struct.unpack(str("I"),
1720
ifreq[16:20])[0]
1721
return interface_index
1722
return if_nametoindex(interface)
1723
1724
1725
2756
def daemon(nochdir = False, noclose = False):
1726
2757
"""See daemon(3). Standard BSD Unix function.
1727
2758
1735
2766
sys.exit()
1736
2767
if not noclose:
1737
2768
# Close all standard open file descriptors
1738
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2769
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1739
2770
if not stat.S_ISCHR(os.fstat(null).st_mode):
1740
2771
raise OSError(errno.ENODEV,
1741
"%s not a character device"
1742
% os.path.devnull)
2772
"{} not a character device"
2773
.format(os.devnull))
1743
2774
os.dup2(null, sys.stdin.fileno())
1744
2775
os.dup2(null, sys.stdout.fileno())
1745
2776
os.dup2(null, sys.stderr.fileno())
1754
2785
1755
2786
parser = argparse.ArgumentParser()
1756
2787
parser.add_argument("-v", "--version", action="version",
1757
version = "%%(prog)s %s" % version,
2788
version = "%(prog)s {}".format(version),
1758
2789
help="show version number and exit")
1759
2790
parser.add_argument("-i", "--interface", metavar="IF",
1760
2791
help="Bind to interface IF")
1766
2797
help="Run self-test")
1767
2798
parser.add_argument("--debug", action="store_true",
1768
2799
help="Debug mode; run in foreground and log"
1769
" to terminal")
2800
" to terminal", default=None)
1770
2801
parser.add_argument("--debuglevel", metavar="LEVEL",
1771
2802
help="Debug level for stdout output")
1772
2803
parser.add_argument("--priority", help="GnuTLS"
1779
2810
" files")
1780
2811
parser.add_argument("--no-dbus", action="store_false",
1781
2812
dest="use_dbus", help="Do not provide D-Bus"
1782
" system bus interface")
2813
" system bus interface", default=None)
1783
2814
parser.add_argument("--no-ipv6", action="store_false",
1784
dest="use_ipv6", help="Do not use IPv6")
2815
dest="use_ipv6", help="Do not use IPv6",
2816
default=None)
2817
parser.add_argument("--no-restore", action="store_false",
2818
dest="restore", help="Do not restore stored"
2819
" state", default=None)
2820
parser.add_argument("--socket", type=int,
2821
help="Specify a file descriptor to a network"
2822
" socket to use instead of creating one")
2823
parser.add_argument("--statedir", metavar="DIR",
2824
help="Directory to save/restore state in")
2825
parser.add_argument("--foreground", action="store_true",
2826
help="Run in foreground", default=None)
2827
parser.add_argument("--no-zeroconf", action="store_false",
2828
dest="zeroconf", help="Do not use Zeroconf",
2829
default=None)
2830
1785
2831
options = parser.parse_args()
1786
2832
1787
2833
if options.check:
1788
2834
import doctest
1789
doctest.testmod()
1790
sys.exit()
2835
fail_count, test_count = doctest.testmod()
2836
sys.exit(os.EX_OK if fail_count == 0 else 1)
1791
2837
1792
2838
# Default values for config file for server-global settings
1793
2839
server_defaults = { "interface": "",
1795
2841
"port": "",
1796
2842
"debug": "False",
1797
2843
"priority":
1798
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2844
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2845
":+SIGN-DSA-SHA256",
1799
2846
"servicename": "Mandos",
1800
2847
"use_dbus": "True",
1801
2848
"use_ipv6": "True",
1802
2849
"debuglevel": "",
1803
}
2850
"restore": "True",
2851
"socket": "",
2852
"statedir": "/var/lib/mandos",
2853
"foreground": "False",
2854
"zeroconf": "True",
2855
}
1804
2856
1805
2857
# Parse config file for server-global settings
1806
2858
server_config = configparser.SafeConfigParser(server_defaults)
1807
2859
del server_defaults
1808
server_config.read(os.path.join(options.configdir,
1809
"mandos.conf"))
2860
server_config.read(os.path.join(options.configdir, "mandos.conf"))
1810
2861
# Convert the SafeConfigParser object to a dict
1811
2862
server_settings = server_config.defaults()
1812
2863
# Use the appropriate methods on the non-string config options
1813
for option in ("debug", "use_dbus", "use_ipv6"):
2864
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
1814
2865
server_settings[option] = server_config.getboolean("DEFAULT",
1815
2866
option)
1816
2867
if server_settings["port"]:
1817
2868
server_settings["port"] = server_config.getint("DEFAULT",
1818
2869
"port")
2870
if server_settings["socket"]:
2871
server_settings["socket"] = server_config.getint("DEFAULT",
2872
"socket")
2873
# Later, stdin will, and stdout and stderr might, be dup'ed
2874
# over with an opened os.devnull. But we don't want this to
2875
# happen with a supplied network socket.
2876
if 0 <= server_settings["socket"] <= 2:
2877
server_settings["socket"] = os.dup(server_settings
2878
["socket"])
1819
2879
del server_config
1820
2880
1821
2881
# Override the settings from the config file with command line
1822
2882
# options, if set.
1823
2883
for option in ("interface", "address", "port", "debug",
1824
"priority", "servicename", "configdir",
1825
"use_dbus", "use_ipv6", "debuglevel"):
2884
"priority", "servicename", "configdir", "use_dbus",
2885
"use_ipv6", "debuglevel", "restore", "statedir",
2886
"socket", "foreground", "zeroconf"):
1826
2887
value = getattr(options, option)
1827
2888
if value is not None:
1828
2889
server_settings[option] = value
1829
2890
del options
1830
2891
# Force all strings to be unicode
1831
2892
for option in server_settings.keys():
1832
if type(server_settings[option]) is str:
1833
server_settings[option] = unicode(server_settings[option])
2893
if isinstance(server_settings[option], bytes):
2894
server_settings[option] = (server_settings[option]
2895
.decode("utf-8"))
2896
# Force all boolean options to be boolean
2897
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2898
"foreground", "zeroconf"):
2899
server_settings[option] = bool(server_settings[option])
2900
# Debug implies foreground
2901
if server_settings["debug"]:
2902
server_settings["foreground"] = True
1834
2903
# Now we have our good server settings in "server_settings"
1835
2904
1836
2905
##################################################################
1837
2906
2907
if (not server_settings["zeroconf"]
2908
and not (server_settings["port"]
2909
or server_settings["socket"] != "")):
2910
parser.error("Needs port or socket to work without Zeroconf")
2911
1838
2912
# For convenience
1839
2913
debug = server_settings["debug"]
1840
2914
debuglevel = server_settings["debuglevel"]
1841
2915
use_dbus = server_settings["use_dbus"]
1842
2916
use_ipv6 = server_settings["use_ipv6"]
1843
2917
stored_state_path = os.path.join(server_settings["statedir"],
2918
stored_state_file)
2919
foreground = server_settings["foreground"]
2920
zeroconf = server_settings["zeroconf"]
2921
2922
if debug:
2923
initlogger(debug, logging.DEBUG)
2924
else:
2925
if not debuglevel:
2926
initlogger(debug)
2927
else:
2928
level = getattr(logging, debuglevel.upper())
2929
initlogger(debug, level)
2930
1844
2931
if server_settings["servicename"] != "Mandos":
1845
syslogger.setFormatter(logging.Formatter
1846
('Mandos (%s) [%%(process)d]:'
1847
' %%(levelname)s: %%(message)s'
1848
% server_settings["servicename"]))
2932
syslogger.setFormatter(
2933
logging.Formatter('Mandos ({}) [%(process)d]:'
2934
' %(levelname)s: %(message)s'.format(
2935
server_settings["servicename"])))
1849
2936
1850
2937
# Parse config file with clients
1851
client_defaults = { "timeout": "5m",
1852
"extended_timeout": "15m",
1853
"interval": "2m",
1854
"checker": "fping -q -- %%(host)s",
1855
"host": "",
1856
"approval_delay": "0s",
1857
"approval_duration": "1s",
1858
}
1859
client_config = configparser.SafeConfigParser(client_defaults)
2938
client_config = configparser.SafeConfigParser(Client
2939
.client_defaults)
1860
2940
client_config.read(os.path.join(server_settings["configdir"],
1861
2941
"clients.conf"))
1862
2942
1863
2943
global mandos_dbus_service
1864
2944
mandos_dbus_service = None
1865
2945
1866
tcp_server = MandosServer((server_settings["address"],
1867
server_settings["port"]),
1868
ClientHandler,
1869
interface=(server_settings["interface"]
1870
or None),
1871
use_ipv6=use_ipv6,
1872
gnutls_priority=
1873
server_settings["priority"],
1874
use_dbus=use_dbus)
1875
if not debug:
1876
pidfilename = "/var/run/mandos.pid"
2946
socketfd = None
2947
if server_settings["socket"] != "":
2948
socketfd = server_settings["socket"]
2949
tcp_server = MandosServer(
2950
(server_settings["address"], server_settings["port"]),
2951
ClientHandler,
2952
interface=(server_settings["interface"] or None),
2953
use_ipv6=use_ipv6,
2954
gnutls_priority=server_settings["priority"],
2955
use_dbus=use_dbus,
2956
socketfd=socketfd)
2957
if not foreground:
2958
pidfilename = "/run/mandos.pid"
2959
if not os.path.isdir("/run/."):
2960
pidfilename = "/var/run/mandos.pid"
2961
pidfile = None
1877
2962
try:
1878
pidfile = open(pidfilename, "w")
1879
except IOError:
1880
logger.error("Could not open file %r", pidfilename)
2963
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2964
except IOError as e:
2965
logger.error("Could not open file %r", pidfilename,
2966
exc_info=e)
1881
2967
1882
try:
1883
uid = pwd.getpwnam("_mandos").pw_uid
1884
gid = pwd.getpwnam("_mandos").pw_gid
1885
except KeyError:
2968
for name, group in (("_mandos", "_mandos"),
2969
("mandos", "mandos"),
2970
("nobody", "nogroup")):
1886
2971
try:
1887
uid = pwd.getpwnam("mandos").pw_uid
1888
gid = pwd.getpwnam("mandos").pw_gid
2972
uid = pwd.getpwnam(name).pw_uid
2973
gid = pwd.getpwnam(group).pw_gid
2974
break
1889
2975
except KeyError:
1890
try:
1891
uid = pwd.getpwnam("nobody").pw_uid
1892
gid = pwd.getpwnam("nobody").pw_gid
1893
except KeyError:
1894
uid = 65534
1895
gid = 65534
2976
continue
2977
else:
2978
uid = 65534
2979
gid = 65534
1896
2980
try:
1897
2981
os.setgid(gid)
1898
2982
os.setuid(uid)
2983
if debug:
2984
logger.debug("Did setuid/setgid to {}:{}".format(uid,
2985
gid))
1899
2986
except OSError as error:
1900
if error[0] != errno.EPERM:
1901
raise error
2987
logger.warning("Failed to setuid/setgid to {}:{}: {}"
2988
.format(uid, gid, os.strerror(error.errno)))
2989
if error.errno != errno.EPERM:
2990
raise
1902
2991
1903
if not debug and not debuglevel:
1904
syslogger.setLevel(logging.WARNING)
1905
console.setLevel(logging.WARNING)
1906
if debuglevel:
1907
level = getattr(logging, debuglevel.upper())
1908
syslogger.setLevel(level)
1909
console.setLevel(level)
1910
1911
2992
if debug:
1912
2993
# Enable all possible GnuTLS debugging
1913
2994
1914
2995
# "Use a log level over 10 to enable all debugging options."
1915
2996
# - GnuTLS manual
1916
gnutls.library.functions.gnutls_global_set_log_level(11)
2997
gnutls.global_set_log_level(11)
1917
2998
1918
@gnutls.library.types.gnutls_log_func
2999
@gnutls.log_func
1919
3000
def debug_gnutls(level, string):
1920
3001
logger.debug("GnuTLS: %s", string[:-1])
1921
3002
1922
(gnutls.library.functions
1923
.gnutls_global_set_log_function(debug_gnutls))
3003
gnutls.global_set_log_function(debug_gnutls)
1924
3004
1925
3005
# Redirect stdin so all checkers get /dev/null
1926
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3006
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1927
3007
os.dup2(null, sys.stdin.fileno())
1928
3008
if null > 2:
1929
3009
os.close(null)
1930
else:
1931
# No console logging
1932
logger.removeHandler(console)
1933
3010
1934
3011
# Need to fork before connecting to D-Bus
1935
if not debug:
3012
if not foreground:
1936
3013
# Close all input and output, do double fork, etc.
1937
3014
daemon()
1938
3015
3016
# multiprocessing will use threads, so before we use GLib we need
3017
# to inform GLib that threads will be used.
3018
GLib.threads_init()
3019
1939
3020
global main_loop
1940
3021
# From the Avahi example code
1941
DBusGMainLoop(set_as_default=True )
1942
main_loop = gobject.MainLoop()
3022
DBusGMainLoop(set_as_default=True)
3023
main_loop = GLib.MainLoop()
1943
3024
bus = dbus.SystemBus()
1944
3025
# End of Avahi example code
1945
3026
if use_dbus:
1946
3027
try:
1947
bus_name = dbus.service.BusName("se.bsnet.fukt.Mandos",
1948
bus, do_not_queue=True)
1949
except dbus.exceptions.NameExistsException as e:
1950
logger.error(unicode(e) + ", disabling D-Bus")
3028
bus_name = dbus.service.BusName("se.recompile.Mandos",
3029
bus,
3030
do_not_queue=True)
3031
old_bus_name = dbus.service.BusName(
3032
"se.bsnet.fukt.Mandos", bus,
3033
do_not_queue=True)
3034
except dbus.exceptions.DBusException as e:
3035
logger.error("Disabling D-Bus:", exc_info=e)
1951
3036
use_dbus = False
1952
3037
server_settings["use_dbus"] = False
1953
3038
tcp_server.use_dbus = False
1954
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1955
service = AvahiService(name = server_settings["servicename"],
1956
servicetype = "_mandos._tcp",
1957
protocol = protocol, bus = bus)
1958
if server_settings["interface"]:
1959
service.interface = (if_nametoindex
1960
(str(server_settings["interface"])))
3039
if zeroconf:
3040
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3041
service = AvahiServiceToSyslog(
3042
name = server_settings["servicename"],
3043
servicetype = "_mandos._tcp",
3044
protocol = protocol,
3045
bus = bus)
3046
if server_settings["interface"]:
3047
service.interface = if_nametoindex(
3048
server_settings["interface"].encode("utf-8"))
1961
3049
1962
3050
global multiprocessing_manager
1963
3051
multiprocessing_manager = multiprocessing.Manager()
1965
3053
client_class = Client
1966
3054
if use_dbus:
1967
3055
client_class = functools.partial(ClientDBus, bus = bus)
1968
def client_config_items(config, section):
1969
special_settings = {
1970
"approved_by_default":
1971
lambda: config.getboolean(section,
1972
"approved_by_default"),
1973
}
1974
for name, value in config.items(section):
3056
3057
client_settings = Client.config_parser(client_config)
3058
old_client_settings = {}
3059
clients_data = {}
3060
3061
# This is used to redirect stdout and stderr for checker processes
3062
global wnull
3063
wnull = open(os.devnull, "w") # A writable /dev/null
3064
# Only used if server is running in foreground but not in debug
3065
# mode
3066
if debug or not foreground:
3067
wnull.close()
3068
3069
# Get client data and settings from last running state.
3070
if server_settings["restore"]:
3071
try:
3072
with open(stored_state_path, "rb") as stored_state:
3073
if sys.version_info.major == 2:
3074
clients_data, old_client_settings = pickle.load(
3075
stored_state)
3076
else:
3077
bytes_clients_data, bytes_old_client_settings = (
3078
pickle.load(stored_state, encoding = "bytes"))
3079
### Fix bytes to strings
3080
## clients_data
3081
# .keys()
3082
clients_data = { (key.decode("utf-8")
3083
if isinstance(key, bytes)
3084
else key): value
3085
for key, value in
3086
bytes_clients_data.items() }
3087
del bytes_clients_data
3088
for key in clients_data:
3089
value = { (k.decode("utf-8")
3090
if isinstance(k, bytes) else k): v
3091
for k, v in
3092
clients_data[key].items() }
3093
clients_data[key] = value
3094
# .client_structure
3095
value["client_structure"] = [
3096
(s.decode("utf-8")
3097
if isinstance(s, bytes)
3098
else s) for s in
3099
value["client_structure"] ]
3100
# .name & .host
3101
for k in ("name", "host"):
3102
if isinstance(value[k], bytes):
3103
value[k] = value[k].decode("utf-8")
3104
## old_client_settings
3105
# .keys()
3106
old_client_settings = {
3107
(key.decode("utf-8")
3108
if isinstance(key, bytes)
3109
else key): value
3110
for key, value in
3111
bytes_old_client_settings.items() }
3112
del bytes_old_client_settings
3113
# .host
3114
for value in old_client_settings.values():
3115
if isinstance(value["host"], bytes):
3116
value["host"] = (value["host"]
3117
.decode("utf-8"))
3118
os.remove(stored_state_path)
3119
except IOError as e:
3120
if e.errno == errno.ENOENT:
3121
logger.warning("Could not load persistent state:"
3122
" {}".format(os.strerror(e.errno)))
3123
else:
3124
logger.critical("Could not load persistent state:",
3125
exc_info=e)
3126
raise
3127
except EOFError as e:
3128
logger.warning("Could not load persistent state: "
3129
"EOFError:",
3130
exc_info=e)
3131
3132
with PGPEngine() as pgp:
3133
for client_name, client in clients_data.items():
3134
# Skip removed clients
3135
if client_name not in client_settings:
3136
continue
3137
3138
# Decide which value to use after restoring saved state.
3139
# We have three different values: Old config file,
3140
# new config file, and saved state.
3141
# New config value takes precedence if it differs from old
3142
# config value, otherwise use saved state.
3143
for name, value in client_settings[client_name].items():
3144
try:
3145
# For each value in new config, check if it
3146
# differs from the old config value (Except for
3147
# the "secret" attribute)
3148
if (name != "secret"
3149
and (value !=
3150
old_client_settings[client_name][name])):
3151
client[name] = value
3152
except KeyError:
3153
pass
3154
3155
# Clients who has passed its expire date can still be
3156
# enabled if its last checker was successful. A Client
3157
# whose checker succeeded before we stored its state is
3158
# assumed to have successfully run all checkers during
3159
# downtime.
3160
if client["enabled"]:
3161
if datetime.datetime.utcnow() >= client["expires"]:
3162
if not client["last_checked_ok"]:
3163
logger.warning(
3164
"disabling client {} - Client never "
3165
"performed a successful checker".format(
3166
client_name))
3167
client["enabled"] = False
3168
elif client["last_checker_status"] != 0:
3169
logger.warning(
3170
"disabling client {} - Client last"
3171
" checker failed with error code"
3172
" {}".format(
3173
client_name,
3174
client["last_checker_status"]))
3175
client["enabled"] = False
3176
else:
3177
client["expires"] = (
3178
datetime.datetime.utcnow()
3179
+ client["timeout"])
3180
logger.debug("Last checker succeeded,"
3181
" keeping {} enabled".format(
3182
client_name))
1975
3183
try:
1976
yield (name, special_settings[name]())
1977
except KeyError:
1978
yield (name, value)
1979
1980
tcp_server.clients.update(set(
1981
client_class(name = section,
1982
config= dict(client_config_items(
1983
client_config, section)))
1984
for section in client_config.sections()))
3184
client["secret"] = pgp.decrypt(
3185
client["encrypted_secret"],
3186
client_settings[client_name]["secret"])
3187
except PGPError:
3188
# If decryption fails, we use secret from new settings
3189
logger.debug("Failed to decrypt {} old secret".format(
3190
client_name))
3191
client["secret"] = (client_settings[client_name]
3192
["secret"])
3193
3194
# Add/remove clients based on new changes made to config
3195
for client_name in (set(old_client_settings)
3196
- set(client_settings)):
3197
del clients_data[client_name]
3198
for client_name in (set(client_settings)
3199
- set(old_client_settings)):
3200
clients_data[client_name] = client_settings[client_name]
3201
3202
# Create all client objects
3203
for client_name, client in clients_data.items():
3204
tcp_server.clients[client_name] = client_class(
3205
name = client_name,
3206
settings = client,
3207
server_settings = server_settings)
3208
1985
3209
if not tcp_server.clients:
1986
3210
logger.warning("No clients defined")
1987
1988
if not debug:
1989
try:
1990
with pidfile:
1991
pid = os.getpid()
1992
pidfile.write(str(pid) + "\n".encode("utf-8"))
1993
del pidfile
1994
except IOError:
1995
logger.error("Could not write to file %r with PID %d",
1996
pidfilename, pid)
1997
except NameError:
1998
# "pidfile" was never created
1999
pass
3211
3212
if not foreground:
3213
if pidfile is not None:
3214
pid = os.getpid()
3215
try:
3216
with pidfile:
3217
print(pid, file=pidfile)
3218
except IOError:
3219
logger.error("Could not write to file %r with PID %d",
3220
pidfilename, pid)
3221
del pidfile
2000
3222
del pidfilename
3223
3224
for termsig in (signal.SIGHUP, signal.SIGTERM):
3225
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3226
lambda: main_loop.quit() and False)
3227
3228
if use_dbus:
2001
3229
2002
signal.signal(signal.SIGINT, signal.SIG_IGN)
2003
2004
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2005
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2006
2007
if use_dbus:
2008
class MandosDBusService(dbus.service.Object):
3230
@alternate_dbus_interfaces(
3231
{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
3232
class MandosDBusService(DBusObjectWithObjectManager):
2009
3233
"""A D-Bus proxy object"""
3234
2010
3235
def __init__(self):
2011
3236
dbus.service.Object.__init__(self, bus, "/")
2012
_interface = "se.bsnet.fukt.Mandos"
3237
3238
_interface = "se.recompile.Mandos"
2013
3239
2014
3240
@dbus.service.signal(_interface, signature="o")
2015
3241
def ClientAdded(self, objpath):
2021
3247
"D-Bus signal"
2022
3248
pass
2023
3249
3250
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3251
"true"})
2024
3252
@dbus.service.signal(_interface, signature="os")
2025
3253
def ClientRemoved(self, objpath, name):
2026
3254
"D-Bus signal"
2027
3255
pass
2028
3256
3257
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3258
"true"})
2029
3259
@dbus.service.method(_interface, out_signature="ao")
2030
3260
def GetAllClients(self):
2031
3261
"D-Bus method"
2032
return dbus.Array(c.dbus_object_path
2033
for c in tcp_server.clients)
3262
return dbus.Array(c.dbus_object_path for c in
3263
tcp_server.clients.values())
2034
3264
3265
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3266
"true"})
2035
3267
@dbus.service.method(_interface,
2036
3268
out_signature="a{oa{sv}}")
2037
3269
def GetAllClientsWithProperties(self):
2038
3270
"D-Bus method"
2039
3271
return dbus.Dictionary(
2040
((c.dbus_object_path, c.GetAll(""))
2041
for c in tcp_server.clients),
3272
{ c.dbus_object_path: c.GetAll(
3273
"se.recompile.Mandos.Client")
3274
for c in tcp_server.clients.values() },
2042
3275
signature="oa{sv}")
2043
3276
2044
3277
@dbus.service.method(_interface, in_signature="o")
2045
3278
def RemoveClient(self, object_path):
2046
3279
"D-Bus method"
2047
for c in tcp_server.clients:
3280
for c in tcp_server.clients.values():
2048
3281
if c.dbus_object_path == object_path:
2049
tcp_server.clients.remove(c)
3282
del tcp_server.clients[c.name]
2050
3283
c.remove_from_connection()
2051
# Don't signal anything except ClientRemoved
3284
# Don't signal the disabling
2052
3285
c.disable(quiet=True)
2053
# Emit D-Bus signal
2054
self.ClientRemoved(object_path, c.name)
3286
# Emit D-Bus signal for removal
3287
self.client_removed_signal(c)
2055
3288
return
2056
3289
raise KeyError(object_path)
2057
3290
2058
3291
del _interface
3292
3293
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3294
out_signature = "a{oa{sa{sv}}}")
3295
def GetManagedObjects(self):
3296
"""D-Bus method"""
3297
return dbus.Dictionary(
3298
{ client.dbus_object_path:
3299
dbus.Dictionary(
3300
{ interface: client.GetAll(interface)
3301
for interface in
3302
client._get_all_interface_names()})
3303
for client in tcp_server.clients.values()})
3304
3305
def client_added_signal(self, client):
3306
"""Send the new standard signal and the old signal"""
3307
if use_dbus:
3308
# New standard signal
3309
self.InterfacesAdded(
3310
client.dbus_object_path,
3311
dbus.Dictionary(
3312
{ interface: client.GetAll(interface)
3313
for interface in
3314
client._get_all_interface_names()}))
3315
# Old signal
3316
self.ClientAdded(client.dbus_object_path)
3317
3318
def client_removed_signal(self, client):
3319
"""Send the new standard signal and the old signal"""
3320
if use_dbus:
3321
# New standard signal
3322
self.InterfacesRemoved(
3323
client.dbus_object_path,
3324
client._get_all_interface_names())
3325
# Old signal
3326
self.ClientRemoved(client.dbus_object_path,
3327
client.name)
2059
3328
2060
3329
mandos_dbus_service = MandosDBusService()
2061
3330
3331
# Save modules to variables to exempt the modules from being
3332
# unloaded before the function registered with atexit() is run.
3333
mp = multiprocessing
3334
wn = wnull
2062
3335
def cleanup():
2063
3336
"Cleanup function; run on exit"
2064
service.cleanup()
2065
3337
if zeroconf:
3338
service.cleanup()
3339
3340
mp.active_children()
3341
wn.close()
3342
if not (tcp_server.clients or client_settings):
3343
return
3344
3345
# Store client before exiting. Secrets are encrypted with key
3346
# based on what config file has. If config file is
3347
# removed/edited, old secret will thus be unrecovable.
3348
clients = {}
3349
with PGPEngine() as pgp:
3350
for client in tcp_server.clients.values():
3351
key = client_settings[client.name]["secret"]
3352
client.encrypted_secret = pgp.encrypt(client.secret,
3353
key)
3354
client_dict = {}
3355
3356
# A list of attributes that can not be pickled
3357
# + secret.
3358
exclude = { "bus", "changedstate", "secret",
3359
"checker", "server_settings" }
3360
for name, typ in inspect.getmembers(dbus.service
3361
.Object):
3362
exclude.add(name)
3363
3364
client_dict["encrypted_secret"] = (client
3365
.encrypted_secret)
3366
for attr in client.client_structure:
3367
if attr not in exclude:
3368
client_dict[attr] = getattr(client, attr)
3369
3370
clients[client.name] = client_dict
3371
del client_settings[client.name]["secret"]
3372
3373
try:
3374
with tempfile.NamedTemporaryFile(
3375
mode='wb',
3376
suffix=".pickle",
3377
prefix='clients-',
3378
dir=os.path.dirname(stored_state_path),
3379
delete=False) as stored_state:
3380
pickle.dump((clients, client_settings), stored_state,
3381
protocol = 2)
3382
tempname = stored_state.name
3383
os.rename(tempname, stored_state_path)
3384
except (IOError, OSError) as e:
3385
if not debug:
3386
try:
3387
os.remove(tempname)
3388
except NameError:
3389
pass
3390
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3391
logger.warning("Could not save persistent state: {}"
3392
.format(os.strerror(e.errno)))
3393
else:
3394
logger.warning("Could not save persistent state:",
3395
exc_info=e)
3396
raise
3397
3398
# Delete all clients, and settings from config
2066
3399
while tcp_server.clients:
2067
client = tcp_server.clients.pop()
3400
name, client = tcp_server.clients.popitem()
2068
3401
if use_dbus:
2069
3402
client.remove_from_connection()
2070
client.disable_hook = None
2071
# Don't signal anything except ClientRemoved
3403
# Don't signal the disabling
2072
3404
client.disable(quiet=True)
3405
# Emit D-Bus signal for removal
2073
3406
if use_dbus:
2074
# Emit D-Bus signal
2075
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
2076
client.name)
3407
mandos_dbus_service.client_removed_signal(client)
3408
client_settings.clear()
2077
3409
2078
3410
atexit.register(cleanup)
2079
3411
2080
for client in tcp_server.clients:
3412
for client in tcp_server.clients.values():
2081
3413
if use_dbus:
2082
# Emit D-Bus signal
2083
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2084
client.enable()
3414
# Emit D-Bus signal for adding
3415
mandos_dbus_service.client_added_signal(client)
3416
# Need to initiate checking of clients
3417
if client.enabled:
3418
client.init_checker()
2085
3419
2086
3420
tcp_server.enable()
2087
3421
tcp_server.server_activate()
2088
3422
2089
3423
# Find out what port we got
2090
service.port = tcp_server.socket.getsockname()[1]
3424
if zeroconf:
3425
service.port = tcp_server.socket.getsockname()[1]
2091
3426
if use_ipv6:
2092
3427
logger.info("Now listening on address %r, port %d,"
2093
" flowinfo %d, scope_id %d"
2094
% tcp_server.socket.getsockname())
3428
" flowinfo %d, scope_id %d",
3429
*tcp_server.socket.getsockname())
2095
3430
else: # IPv4
2096
logger.info("Now listening on address %r, port %d"
2097
% tcp_server.socket.getsockname())
3431
logger.info("Now listening on address %r, port %d",
3432
*tcp_server.socket.getsockname())
2098
3433
2099
3434
#service.interface = tcp_server.socket.getsockname()[3]
2100
3435
2101
3436
try:
2102
# From the Avahi example code
2103
try:
2104
service.activate()
2105
except dbus.exceptions.DBusException as error:
2106
logger.critical("DBusException: %s", error)
2107
cleanup()
2108
sys.exit(1)
2109
# End of Avahi example code
3437
if zeroconf:
3438
# From the Avahi example code
3439
try:
3440
service.activate()
3441
except dbus.exceptions.DBusException as error:
3442
logger.critical("D-Bus Exception", exc_info=error)
3443
cleanup()
3444
sys.exit(1)
3445
# End of Avahi example code
2110
3446
2111
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2112
lambda *args, **kwargs:
2113
(tcp_server.handle_request
2114
(*args[2:], **kwargs) or True))
3447
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3448
lambda *args, **kwargs:
3449
(tcp_server.handle_request
3450
(*args[2:], **kwargs) or True))
2115
3451
2116
3452
logger.debug("Starting main loop")
2117
3453
main_loop.run()
2118
3454
except AvahiError as error:
2119
logger.critical("AvahiError: %s", error)
3455
logger.critical("Avahi Error", exc_info=error)
2120
3456
cleanup()
2121
3457
sys.exit(1)
2122
3458
except KeyboardInterrupt:
2127
3463
# Must run before the D-Bus bus name gets deregistered
2128
3464
cleanup()
2129
3465
3466
2130
3467
if __name__ == '__main__':
2131
3468
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0