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- Committer: Teddy Hogeborn
- Date: 2012-06-17 22:26:40 UTC
- mfrom: (301.1.1 release)
- Revision ID: teddy@recompile.se-20120617222640-49scfn0husnrr5bi
Tags: version-1.6.0-1
* Makefile (version): Changed to "1.6.0".
* NEWS (Version 1.6.0): New entry.
* debian/changelog (1.6.0-1): - '' -
* NEWS (Version 1.6.0): New entry.
* debian/changelog (1.6.0-1): - '' -
added
removed
mandos
11
11
# "AvahiService" class, and some lines in "main".
12
12
#
13
13
# Everything else is
14
# Copyright © 2008-2016 Teddy Hogeborn
15
# Copyright © 2008-2016 Björn Påhlsson
14
# Copyright © 2008-2012 Teddy Hogeborn
15
# Copyright © 2008-2012 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
34
34
from __future__ import (division, absolute_import, print_function,
35
35
unicode_literals)
36
36
37
try:
38
from future_builtins import *
39
except ImportError:
40
pass
37
from future_builtins import *
41
38
42
try:
43
import SocketServer as socketserver
44
except ImportError:
45
import socketserver
39
import SocketServer as socketserver
46
40
import socket
47
41
import argparse
48
42
import datetime
49
43
import errno
50
try:
51
import ConfigParser as configparser
52
except ImportError:
53
import configparser
44
import gnutls.crypto
45
import gnutls.connection
46
import gnutls.errors
47
import gnutls.library.functions
48
import gnutls.library.constants
49
import gnutls.library.types
50
import ConfigParser as configparser
54
51
import sys
55
52
import re
56
53
import os
65
62
import struct
66
63
import fcntl
67
64
import functools
68
try:
69
import cPickle as pickle
70
except ImportError:
71
import pickle
65
import cPickle as pickle
72
66
import multiprocessing
73
67
import types
74
68
import binascii
75
69
import tempfile
76
70
import itertools
77
import collections
78
import codecs
79
71
80
72
import dbus
81
73
import dbus.service
82
from gi.repository import GLib
74
import gobject
75
import avahi
83
76
from dbus.mainloop.glib import DBusGMainLoop
84
77
import ctypes
85
78
import ctypes.util
86
79
import xml.dom.minidom
87
80
import inspect
81
import GnuPGInterface
88
82
89
# Try to find the value of SO_BINDTODEVICE:
90
83
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:
93
84
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
94
85
except AttributeError:
95
86
try:
96
# This is where SO_BINDTODEVICE was up to and including Python
97
# 2.6, and also 3.2:
98
87
from IN import SO_BINDTODEVICE
99
88
except ImportError:
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"
89
SO_BINDTODEVICE = None
90
91
version = "1.6.0"
118
92
stored_state_file = "clients.pickle"
119
93
120
94
logger = logging.getLogger()
121
syslogger = None
95
syslogger = (logging.handlers.SysLogHandler
96
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
97
address = str("/dev/log")))
122
98
123
99
try:
124
if_nametoindex = ctypes.cdll.LoadLibrary(
125
ctypes.util.find_library("c")).if_nametoindex
100
if_nametoindex = (ctypes.cdll.LoadLibrary
101
(ctypes.util.find_library("c"))
102
.if_nametoindex)
126
103
except (OSError, AttributeError):
127
128
104
def if_nametoindex(interface):
129
105
"Get an interface index the hard way, i.e. using fcntl()"
130
106
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
131
107
with contextlib.closing(socket.socket()) as s:
132
108
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
133
struct.pack(b"16s16x", interface))
134
interface_index = struct.unpack("I", ifreq[16:20])[0]
109
struct.pack(str("16s16x"),
110
interface))
111
interface_index = struct.unpack(str("I"),
112
ifreq[16:20])[0]
135
113
return interface_index
136
114
137
115
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
116
def initlogger(debug, level=logging.WARNING):
155
117
"""init logger and add loglevel"""
156
118
157
global syslogger
158
syslogger = (logging.handlers.SysLogHandler(
159
facility = logging.handlers.SysLogHandler.LOG_DAEMON,
160
address = "/dev/log"))
161
119
syslogger.setFormatter(logging.Formatter
162
120
('Mandos [%(process)d]: %(levelname)s:'
163
121
' %(message)s'))
180
138
181
139
class PGPEngine(object):
182
140
"""A simple class for OpenPGP symmetric encryption & decryption"""
183
184
141
def __init__(self):
142
self.gnupg = GnuPGInterface.GnuPG()
185
143
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")
144
self.gnupg = GnuPGInterface.GnuPG()
145
self.gnupg.options.meta_interactive = False
146
self.gnupg.options.homedir = self.tempdir
147
self.gnupg.options.extra_args.extend(['--force-mdc',
148
'--quiet',
149
'--no-use-agent'])
204
150
205
151
def __enter__(self):
206
152
return self
228
174
def password_encode(self, password):
229
175
# Passphrase can not be empty and can not contain newlines or
230
176
# 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
177
return b"mandos" + binascii.hexlify(password)
238
178
239
179
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)
180
self.gnupg.passphrase = self.password_encode(password)
181
with open(os.devnull, "w") as devnull:
182
try:
183
proc = self.gnupg.run(['--symmetric'],
184
create_fhs=['stdin', 'stdout'],
185
attach_fhs={'stderr': devnull})
186
with contextlib.closing(proc.handles['stdin']) as f:
187
f.write(data)
188
with contextlib.closing(proc.handles['stdout']) as f:
189
ciphertext = f.read()
190
proc.wait()
191
except IOError as e:
192
raise PGPError(e)
193
self.gnupg.passphrase = None
255
194
return ciphertext
256
195
257
196
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)
197
self.gnupg.passphrase = self.password_encode(password)
198
with open(os.devnull, "w") as devnull:
199
try:
200
proc = self.gnupg.run(['--decrypt'],
201
create_fhs=['stdin', 'stdout'],
202
attach_fhs={'stderr': devnull})
203
with contextlib.closing(proc.handles['stdin']) as f:
204
f.write(data)
205
with contextlib.closing(proc.handles['stdout']) as f:
206
decrypted_plaintext = f.read()
207
proc.wait()
208
except IOError as e:
209
raise PGPError(e)
210
self.gnupg.passphrase = None
273
211
return decrypted_plaintext
274
212
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()
299
213
300
214
class AvahiError(Exception):
301
215
def __init__(self, value, *args, **kwargs):
302
216
self.value = value
303
return super(AvahiError, self).__init__(value, *args,
304
**kwargs)
305
217
super(AvahiError, self).__init__(value, *args, **kwargs)
218
def __unicode__(self):
219
return unicode(repr(self.value))
306
220
307
221
class AvahiServiceError(AvahiError):
308
222
pass
309
223
310
311
224
class AvahiGroupError(AvahiError):
312
225
pass
313
226
320
233
Used to optionally bind to the specified interface.
321
234
name: string; Example: 'Mandos'
322
235
type: string; Example: '_mandos._tcp'.
323
See <https://www.iana.org/assignments/service-names-port-numbers>
236
See <http://www.dns-sd.org/ServiceTypes.html>
324
237
port: integer; what port to announce
325
238
TXT: list of strings; TXT record for the service
326
239
domain: string; Domain to publish on, default to .local if empty.
333
246
bus: dbus.SystemBus()
334
247
"""
335
248
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):
249
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
250
servicetype = None, port = None, TXT = None,
251
domain = "", host = "", max_renames = 32768,
252
protocol = avahi.PROTO_UNSPEC, bus = None):
347
253
self.interface = interface
348
254
self.name = name
349
255
self.type = servicetype
359
265
self.bus = bus
360
266
self.entry_group_state_changed_match = None
361
267
362
def rename(self, remove=True):
268
def rename(self):
363
269
"""Derived from the Avahi example code"""
364
270
if self.rename_count >= self.max_renames:
365
271
logger.critical("No suitable Zeroconf service name found"
366
272
" after %i retries, exiting.",
367
273
self.rename_count)
368
274
raise AvahiServiceError("Too many renames")
369
self.name = str(
370
self.server.GetAlternativeServiceName(self.name))
371
self.rename_count += 1
275
self.name = unicode(self.server
276
.GetAlternativeServiceName(self.name))
372
277
logger.info("Changing Zeroconf service name to %r ...",
373
278
self.name)
374
if remove:
375
self.remove()
279
self.remove()
376
280
try:
377
281
self.add()
378
282
except dbus.exceptions.DBusException as error:
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)
283
logger.critical("D-Bus Exception", exc_info=error)
284
self.cleanup()
285
os._exit(1)
286
self.rename_count += 1
387
287
388
288
def remove(self):
389
289
"""Derived from the Avahi example code"""
427
327
self.rename()
428
328
elif state == avahi.ENTRY_GROUP_FAILURE:
429
329
logger.critical("Avahi: Error in group state changed %s",
430
str(error))
431
raise AvahiGroupError("State changed: {!s}".format(error))
330
unicode(error))
331
raise AvahiGroupError("State changed: {0!s}"
332
.format(error))
432
333
433
334
def cleanup(self):
434
335
"""Derived from the Avahi example code"""
444
345
def server_state_changed(self, state, error=None):
445
346
"""Derived from the Avahi example code"""
446
347
logger.debug("Avahi server state change: %i", state)
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
}
348
bad_states = { avahi.SERVER_INVALID:
349
"Zeroconf server invalid",
350
avahi.SERVER_REGISTERING: None,
351
avahi.SERVER_COLLISION:
352
"Zeroconf server name collision",
353
avahi.SERVER_FAILURE:
354
"Zeroconf server failure" }
453
355
if state in bad_states:
454
356
if bad_states[state] is not None:
455
357
if error is None:
458
360
logger.error(bad_states[state] + ": %r", error)
459
361
self.cleanup()
460
362
elif state == avahi.SERVER_RUNNING:
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)
363
self.add()
473
364
else:
474
365
if error is None:
475
366
logger.debug("Unknown state: %r", state)
485
376
follow_name_owner_changes=True),
486
377
avahi.DBUS_INTERFACE_SERVER)
487
378
self.server.connect_to_signal("StateChanged",
488
self.server_state_changed)
379
self.server_state_changed)
489
380
self.server_state_changed(self.server.GetState())
490
381
491
382
492
383
class AvahiServiceToSyslog(AvahiService):
493
def rename(self, *args, **kwargs):
384
def rename(self):
494
385
"""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)))
386
ret = AvahiService.rename(self)
387
syslogger.setFormatter(logging.Formatter
388
('Mandos ({0}) [%(process)d]:'
389
' %(levelname)s: %(message)s'
390
.format(self.name)))
499
391
return ret
500
392
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()
393
394
def timedelta_to_milliseconds(td):
395
"Convert a datetime.timedelta() to milliseconds"
396
return ((td.days * 24 * 60 * 60 * 1000)
397
+ (td.seconds * 1000)
398
+ (td.microseconds // 1000))
399
765
400
766
401
class Client(object):
767
402
"""A representation of a client host served by this server.
773
408
checker: subprocess.Popen(); a running checker process used
774
409
to see if the client lives.
775
410
'None' if no process is running.
776
checker_callback_tag: a GLib event source tag, or None
411
checker_callback_tag: a gobject event source tag, or None
777
412
checker_command: string; External command which is run to check
778
413
if client lives. %() expansions are done at
779
414
runtime with vars(self) as dict, so that for
780
415
instance %(name)s can be used in the command.
781
checker_initiator_tag: a GLib event source tag, or None
416
checker_initiator_tag: a gobject event source tag, or None
782
417
created: datetime.datetime(); (UTC) object creation
783
418
client_structure: Object describing what attributes a client has
784
419
and is used for storing the client at exit
785
420
current_checker_command: string; current running checker_command
786
disable_initiator_tag: a GLib event source tag, or None
421
disable_initiator_tag: a gobject event source tag, or None
787
422
enabled: bool()
788
423
fingerprint: string (40 or 32 hexadecimal digits); used to
789
424
uniquely identify the client
794
429
last_checker_status: integer between 0 and 255 reflecting exit
795
430
status of last checker. -1 reflects crashed
796
431
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
432
last_enabled: datetime.datetime(); (UTC) or None
800
433
name: string; from the config file, used in log messages and
801
434
D-Bus identifiers
806
439
runtime_expansions: Allowed attributes for runtime expansion.
807
440
expires: datetime.datetime(); time (UTC) when a client will be
808
441
disabled, or None
809
server_settings: The server_settings dict from main()
810
442
"""
811
443
812
444
runtime_expansions = ("approval_delay", "approval_duration",
814
446
"fingerprint", "host", "interval",
815
447
"last_approval_request", "last_checked_ok",
816
448
"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
}
449
client_defaults = { "timeout": "5m",
450
"extended_timeout": "15m",
451
"interval": "2m",
452
"checker": "fping -q -- %%(host)s",
453
"host": "",
454
"approval_delay": "0s",
455
"approval_duration": "1s",
456
"approved_by_default": "True",
457
"enabled": "True",
458
}
459
460
def timeout_milliseconds(self):
461
"Return the 'timeout' attribute in milliseconds"
462
return timedelta_to_milliseconds(self.timeout)
463
464
def extended_timeout_milliseconds(self):
465
"Return the 'extended_timeout' attribute in milliseconds"
466
return timedelta_to_milliseconds(self.extended_timeout)
467
468
def interval_milliseconds(self):
469
"Return the 'interval' attribute in milliseconds"
470
return timedelta_to_milliseconds(self.interval)
471
472
def approval_delay_milliseconds(self):
473
return timedelta_to_milliseconds(self.approval_delay)
828
474
829
475
@staticmethod
830
476
def config_parser(config):
846
492
client["enabled"] = config.getboolean(client_name,
847
493
"enabled")
848
494
849
# Uppercase and remove spaces from fingerprint for later
850
# comparison purposes with return value from the
851
# fingerprint() function
852
495
client["fingerprint"] = (section["fingerprint"].upper()
853
496
.replace(" ", ""))
854
497
if "secret" in section:
855
client["secret"] = codecs.decode(section["secret"]
856
.encode("utf-8"),
857
"base64")
498
client["secret"] = section["secret"].decode("base64")
858
499
elif "secfile" in section:
859
500
with open(os.path.expanduser(os.path.expandvars
860
501
(section["secfile"])),
861
502
"rb") as secfile:
862
503
client["secret"] = secfile.read()
863
504
else:
864
raise TypeError("No secret or secfile for section {}"
505
raise TypeError("No secret or secfile for section {0}"
865
506
.format(section))
866
507
client["timeout"] = string_to_delta(section["timeout"])
867
508
client["extended_timeout"] = string_to_delta(
878
519
879
520
return settings
880
521
881
def __init__(self, settings, name = None, server_settings=None):
522
def __init__(self, settings, name = None):
882
523
self.name = name
883
if server_settings is None:
884
server_settings = {}
885
self.server_settings = server_settings
886
524
# adding all client settings
887
for setting, value in settings.items():
525
for setting, value in settings.iteritems():
888
526
setattr(self, setting, value)
889
527
890
528
if self.enabled:
898
536
self.expires = None
899
537
900
538
logger.debug("Creating client %r", self.name)
539
# Uppercase and remove spaces from fingerprint for later
540
# comparison purposes with return value from the fingerprint()
541
# function
901
542
logger.debug(" Fingerprint: %s", self.fingerprint)
902
543
self.created = settings.get("created",
903
544
datetime.datetime.utcnow())
910
551
self.current_checker_command = None
911
552
self.approved = None
912
553
self.approvals_pending = 0
913
self.changedstate = multiprocessing_manager.Condition(
914
multiprocessing_manager.Lock())
915
self.client_structure = [attr
916
for attr in self.__dict__.keys()
554
self.changedstate = (multiprocessing_manager
555
.Condition(multiprocessing_manager
556
.Lock()))
557
self.client_structure = [attr for attr in
558
self.__dict__.iterkeys()
917
559
if not attr.startswith("_")]
918
560
self.client_structure.append("client_structure")
919
561
920
for name, t in inspect.getmembers(
921
type(self), lambda obj: isinstance(obj, property)):
562
for name, t in inspect.getmembers(type(self),
563
lambda obj:
564
isinstance(obj,
565
property)):
922
566
if not name.startswith("_"):
923
567
self.client_structure.append(name)
924
568
945
589
if not quiet:
946
590
logger.info("Disabling client %s", self.name)
947
591
if getattr(self, "disable_initiator_tag", None) is not None:
948
GLib.source_remove(self.disable_initiator_tag)
592
gobject.source_remove(self.disable_initiator_tag)
949
593
self.disable_initiator_tag = None
950
594
self.expires = None
951
595
if getattr(self, "checker_initiator_tag", None) is not None:
952
GLib.source_remove(self.checker_initiator_tag)
596
gobject.source_remove(self.checker_initiator_tag)
953
597
self.checker_initiator_tag = None
954
598
self.stop_checker()
955
599
self.enabled = False
956
600
if not quiet:
957
601
self.send_changedstate()
958
# Do not run this again if called by a GLib.timeout_add
602
# Do not run this again if called by a gobject.timeout_add
959
603
return False
960
604
961
605
def __del__(self):
965
609
# Schedule a new checker to be started an 'interval' from now,
966
610
# and every interval from then on.
967
611
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)
612
gobject.source_remove(self.checker_initiator_tag)
613
self.checker_initiator_tag = (gobject.timeout_add
614
(self.interval_milliseconds(),
615
self.start_checker))
972
616
# Schedule a disable() when 'timeout' has passed
973
617
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)
618
gobject.source_remove(self.disable_initiator_tag)
619
self.disable_initiator_tag = (gobject.timeout_add
620
(self.timeout_milliseconds(),
621
self.disable))
977
622
# Also start a new checker *right now*.
978
623
self.start_checker()
979
624
980
def checker_callback(self, source, condition, connection,
981
command):
625
def checker_callback(self, pid, condition, command):
982
626
"""The checker has completed, so take appropriate actions."""
983
627
self.checker_callback_tag = None
984
628
self.checker = None
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
629
if os.WIFEXITED(condition):
630
self.last_checker_status = os.WEXITSTATUS(condition)
992
631
if self.last_checker_status == 0:
993
632
logger.info("Checker for %(name)s succeeded",
994
633
vars(self))
995
634
self.checked_ok()
996
635
else:
997
logger.info("Checker for %(name)s failed", vars(self))
636
logger.info("Checker for %(name)s failed",
637
vars(self))
998
638
else:
999
639
self.last_checker_status = -1
1000
self.last_checker_signal = -returncode
1001
640
logger.warning("Checker for %(name)s crashed?",
1002
641
vars(self))
1003
return False
1004
642
1005
643
def checked_ok(self):
1006
644
"""Assert that the client has been seen, alive and well."""
1007
645
self.last_checked_ok = datetime.datetime.utcnow()
1008
646
self.last_checker_status = 0
1009
self.last_checker_signal = None
1010
647
self.bump_timeout()
1011
648
1012
649
def bump_timeout(self, timeout=None):
1014
651
if timeout is None:
1015
652
timeout = self.timeout
1016
653
if self.disable_initiator_tag is not None:
1017
GLib.source_remove(self.disable_initiator_tag)
654
gobject.source_remove(self.disable_initiator_tag)
1018
655
self.disable_initiator_tag = None
1019
656
if getattr(self, "enabled", False):
1020
self.disable_initiator_tag = GLib.timeout_add(
1021
int(timeout.total_seconds() * 1000), self.disable)
657
self.disable_initiator_tag = (gobject.timeout_add
658
(timedelta_to_milliseconds
659
(timeout), self.disable))
1022
660
self.expires = datetime.datetime.utcnow() + timeout
1023
661
1024
662
def need_approval(self):
1038
676
# than 'timeout' for the client to be disabled, which is as it
1039
677
# should be.
1040
678
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
679
# If a checker exists, make sure it is not a zombie
680
try:
681
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
682
except (AttributeError, OSError) as error:
683
if (isinstance(error, OSError)
684
and error.errno != errno.ECHILD):
685
raise error
686
else:
687
if pid:
688
logger.warning("Checker was a zombie")
689
gobject.source_remove(self.checker_callback_tag)
690
self.checker_callback(pid, status,
691
self.current_checker_command)
1045
692
# Start a new checker if needed
1046
693
if self.checker is None:
1047
694
# Escape attributes for the shell
1048
escaped_attrs = {
1049
attr: re.escape(str(getattr(self, attr)))
1050
for attr in self.runtime_expansions }
695
escaped_attrs = dict(
696
(attr, re.escape(unicode(getattr(self, attr))))
697
for attr in
698
self.runtime_expansions)
1051
699
try:
1052
700
command = self.checker_command % escaped_attrs
1053
701
except TypeError as error:
1054
702
logger.error('Could not format string "%s"',
1055
self.checker_command,
703
self.checker_command, exc_info=error)
704
return True # Try again later
705
self.current_checker_command = command
706
try:
707
logger.info("Starting checker %r for %s",
708
command, self.name)
709
# We don't need to redirect stdout and stderr, since
710
# in normal mode, that is already done by daemon(),
711
# and in debug mode we don't want to. (Stdin is
712
# always replaced by /dev/null.)
713
self.checker = subprocess.Popen(command,
714
close_fds=True,
715
shell=True, cwd="/")
716
except OSError as error:
717
logger.error("Failed to start subprocess",
1056
718
exc_info=error)
1057
return True # Try again later
1058
self.current_checker_command = command
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
719
self.checker_callback_tag = (gobject.child_watch_add
720
(self.checker.pid,
721
self.checker_callback,
722
data=command))
723
# The checker may have completed before the gobject
724
# watch was added. Check for this.
725
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
726
if pid:
727
gobject.source_remove(self.checker_callback_tag)
728
self.checker_callback(pid, status, command)
729
# Re-run this periodically if run by gobject.timeout_add
1085
730
return True
1086
731
1087
732
def stop_checker(self):
1088
733
"""Force the checker process, if any, to stop."""
1089
734
if self.checker_callback_tag:
1090
GLib.source_remove(self.checker_callback_tag)
735
gobject.source_remove(self.checker_callback_tag)
1091
736
self.checker_callback_tag = None
1092
737
if getattr(self, "checker", None) is None:
1093
738
return
1094
739
logger.debug("Stopping checker for %(name)s", vars(self))
1095
self.checker.terminate()
740
try:
741
self.checker.terminate()
742
#time.sleep(0.5)
743
#if self.checker.poll() is None:
744
# self.checker.kill()
745
except OSError as error:
746
if error.errno != errno.ESRCH: # No such process
747
raise
1096
748
self.checker = None
1097
749
1098
750
1099
def dbus_service_property(dbus_interface,
1100
signature="v",
1101
access="readwrite",
1102
byte_arrays=False):
751
def dbus_service_property(dbus_interface, signature="v",
752
access="readwrite", byte_arrays=False):
1103
753
"""Decorators for marking methods of a DBusObjectWithProperties to
1104
754
become properties on the D-Bus.
1105
755
1114
764
# "Set" method, so we fail early here:
1115
765
if byte_arrays and signature != "ay":
1116
766
raise ValueError("Byte arrays not supported for non-'ay'"
1117
" signature {!r}".format(signature))
1118
767
" signature {0!r}".format(signature))
1119
768
def decorator(func):
1120
769
func._dbus_is_property = True
1121
770
func._dbus_interface = dbus_interface
1126
775
func._dbus_name = func._dbus_name[:-14]
1127
776
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
1128
777
return func
1129
1130
778
return decorator
1131
779
1132
780
1141
789
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1142
790
"false"}
1143
791
"""
1144
1145
792
def decorator(func):
1146
793
func._dbus_is_interface = True
1147
794
func._dbus_interface = dbus_interface
1148
795
func._dbus_name = dbus_interface
1149
796
return func
1150
1151
797
return decorator
1152
798
1153
799
1155
801
"""Decorator to annotate D-Bus methods, signals or properties
1156
802
Usage:
1157
803
1158
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1159
"org.freedesktop.DBus.Property."
1160
"EmitsChangedSignal": "false"})
1161
804
@dbus_service_property("org.example.Interface", signature="b",
1162
805
access="r")
806
@dbus_annotations({{"org.freedesktop.DBus.Deprecated": "true",
807
"org.freedesktop.DBus.Property."
808
"EmitsChangedSignal": "false"})
1163
809
def Property_dbus_property(self):
1164
810
return dbus.Boolean(False)
1165
1166
See also the DBusObjectWithAnnotations class.
1167
811
"""
1168
1169
812
def decorator(func):
1170
813
func._dbus_annotations = annotations
1171
814
return func
1172
1173
815
return decorator
1174
816
1175
817
1176
818
class DBusPropertyException(dbus.exceptions.DBusException):
1177
819
"""A base class for D-Bus property-related exceptions
1178
820
"""
1179
pass
821
def __unicode__(self):
822
return unicode(str(self))
1180
823
1181
824
1182
825
class DBusPropertyAccessException(DBusPropertyException):
1191
834
pass
1192
835
1193
836
1194
class DBusObjectWithAnnotations(dbus.service.Object):
1195
"""A D-Bus object with annotations.
837
class DBusObjectWithProperties(dbus.service.Object):
838
"""A D-Bus object with properties.
1196
839
1197
Classes inheriting from this can use the dbus_annotations
1198
decorator to add annotations to methods or signals.
840
Classes inheriting from this can use the dbus_service_property
841
decorator to expose methods as D-Bus properties. It exposes the
842
standard Get(), Set(), and GetAll() methods on the D-Bus.
1199
843
"""
1200
844
1201
845
@staticmethod
1205
849
If called like _is_dbus_thing("method") it returns a function
1206
850
suitable for use as predicate to inspect.getmembers().
1207
851
"""
1208
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
852
return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),
1209
853
False)
1210
854
1211
855
def _get_all_dbus_things(self, thing):
1212
856
"""Returns a generator of (name, attribute) pairs
1213
857
"""
1214
return ((getattr(athing.__get__(self), "_dbus_name", name),
858
return ((getattr(athing.__get__(self), "_dbus_name",
859
name),
1215
860
athing.__get__(self))
1216
861
for cls in self.__class__.__mro__
1217
862
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):
1284
"""A D-Bus object with properties.
1285
1286
Classes inheriting from this can use the dbus_service_property
1287
decorator to expose methods as D-Bus properties. It exposes the
1288
standard Get(), Set(), and GetAll() methods on the D-Bus.
1289
"""
863
inspect.getmembers(cls,
864
self._is_dbus_thing(thing)))
1290
865
1291
866
def _get_dbus_property(self, interface_name, property_name):
1292
867
"""Returns a bound method if one exists which is a D-Bus
1293
868
property with the specified name and interface.
1294
869
"""
1295
for cls in self.__class__.__mro__:
1296
for name, value in inspect.getmembers(
1297
cls, self._is_dbus_thing("property")):
870
for cls in self.__class__.__mro__:
871
for name, value in (inspect.getmembers
872
(cls,
873
self._is_dbus_thing("property"))):
1298
874
if (value._dbus_name == property_name
1299
875
and value._dbus_interface == interface_name):
1300
876
return value.__get__(self)
1301
877
1302
878
# No such property
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",
879
raise DBusPropertyNotFound(self.dbus_object_path + ":"
880
+ interface_name + "."
881
+ property_name)
882
883
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1317
884
out_signature="v")
1318
885
def Get(self, interface_name, property_name):
1319
886
"""Standard D-Bus property Get() method, see D-Bus standard.
1337
904
# The byte_arrays option is not supported yet on
1338
905
# signatures other than "ay".
1339
906
if prop._dbus_signature != "ay":
1340
raise ValueError("Byte arrays not supported for non-"
1341
"'ay' signature {!r}"
1342
.format(prop._dbus_signature))
907
raise ValueError
1343
908
value = dbus.ByteArray(b''.join(chr(byte)
1344
909
for byte in value))
1345
910
prop(value)
1346
911
1347
@dbus.service.method(dbus.PROPERTIES_IFACE,
1348
in_signature="s",
912
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1349
913
out_signature="a{sv}")
1350
914
def GetAll(self, interface_name):
1351
915
"""Standard D-Bus property GetAll() method, see D-Bus
1366
930
if not hasattr(value, "variant_level"):
1367
931
properties[name] = value
1368
932
continue
1369
properties[name] = type(value)(
1370
value, variant_level = value.variant_level + 1)
933
properties[name] = type(value)(value, variant_level=
934
value.variant_level+1)
1371
935
return dbus.Dictionary(properties, signature="sv")
1372
936
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
1380
1381
937
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1382
938
out_signature="s",
1383
939
path_keyword='object_path',
1387
943
1388
944
Inserts property tags and interface annotation tags.
1389
945
"""
1390
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1391
object_path,
1392
connection)
946
xmlstring = dbus.service.Object.Introspect(self, object_path,
947
connection)
1393
948
try:
1394
949
document = xml.dom.minidom.parseString(xmlstring)
1395
1396
950
def make_tag(document, name, prop):
1397
951
e = document.createElement("property")
1398
952
e.setAttribute("name", name)
1399
953
e.setAttribute("type", prop._dbus_signature)
1400
954
e.setAttribute("access", prop._dbus_access)
1401
955
return e
1402
1403
956
for if_tag in document.getElementsByTagName("interface"):
1404
957
# Add property tags
1405
958
for tag in (make_tag(document, name, prop)
1408
961
if prop._dbus_interface
1409
962
== if_tag.getAttribute("name")):
1410
963
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)
964
# Add annotation tags
965
for typ in ("method", "signal", "property"):
966
for tag in if_tag.getElementsByTagName(typ):
967
annots = dict()
968
for name, prop in (self.
969
_get_all_dbus_things(typ)):
970
if (name == tag.getAttribute("name")
971
and prop._dbus_interface
972
== if_tag.getAttribute("name")):
973
annots.update(getattr
974
(prop,
975
"_dbus_annotations",
976
{}))
977
for name, value in annots.iteritems():
978
ann_tag = document.createElement(
979
"annotation")
980
ann_tag.setAttribute("name", name)
981
ann_tag.setAttribute("value", value)
982
tag.appendChild(ann_tag)
983
# Add interface annotation tags
984
for annotation, value in dict(
985
itertools.chain.from_iterable(
986
annotations().iteritems()
987
for name, annotations in
988
self._get_all_dbus_things("interface")
989
if name == if_tag.getAttribute("name")
990
)).iteritems():
991
ann_tag = document.createElement("annotation")
992
ann_tag.setAttribute("name", annotation)
993
ann_tag.setAttribute("value", value)
994
if_tag.appendChild(ann_tag)
1427
995
# Add the names to the return values for the
1428
996
# "org.freedesktop.DBus.Properties" methods
1429
997
if (if_tag.getAttribute("name")
1447
1015
exc_info=error)
1448
1016
return xmlstring
1449
1017
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
1018
1519
1019
def datetime_to_dbus(dt, variant_level=0):
1520
1020
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1521
1021
if dt is None:
1522
1022
return dbus.String("", variant_level = variant_level)
1523
return dbus.String(dt.isoformat(), variant_level=variant_level)
1023
return dbus.String(dt.isoformat(),
1024
variant_level=variant_level)
1524
1025
1525
1026
1526
1027
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1546
1047
(from DBusObjectWithProperties) and interfaces (from the
1547
1048
dbus_interface_annotations decorator).
1548
1049
"""
1549
1550
1050
def wrapper(cls):
1551
1051
for orig_interface_name, alt_interface_name in (
1552
alt_interface_names.items()):
1052
alt_interface_names.iteritems()):
1553
1053
attr = {}
1554
1054
interface_names = set()
1555
1055
# Go though all attributes of the class
1557
1057
# Ignore non-D-Bus attributes, and D-Bus attributes
1558
1058
# with the wrong interface name
1559
1059
if (not hasattr(attribute, "_dbus_interface")
1560
or not attribute._dbus_interface.startswith(
1561
orig_interface_name)):
1060
or not attribute._dbus_interface
1061
.startswith(orig_interface_name)):
1562
1062
continue
1563
1063
# Create an alternate D-Bus interface name based on
1564
1064
# the current name
1565
alt_interface = attribute._dbus_interface.replace(
1566
orig_interface_name, alt_interface_name)
1065
alt_interface = (attribute._dbus_interface
1066
.replace(orig_interface_name,
1067
alt_interface_name))
1567
1068
interface_names.add(alt_interface)
1568
1069
# Is this a D-Bus signal?
1569
1070
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(
1071
# Extract the original non-method function by
1072
# black magic
1073
nonmethod_func = (dict(
1574
1074
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)
1075
attribute.__closure__))["func"]
1076
.cell_contents)
1582
1077
# Create a new, but exactly alike, function
1583
1078
# object, and decorate it to be a new D-Bus signal
1584
1079
# 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))
1080
new_function = (dbus.service.signal
1081
(alt_interface,
1082
attribute._dbus_signature)
1083
(types.FunctionType(
1084
nonmethod_func.func_code,
1085
nonmethod_func.func_globals,
1086
nonmethod_func.func_name,
1087
nonmethod_func.func_defaults,
1088
nonmethod_func.func_closure)))
1589
1089
# Copy annotations, if any
1590
1090
try:
1591
new_function._dbus_annotations = dict(
1592
attribute._dbus_annotations)
1091
new_function._dbus_annotations = (
1092
dict(attribute._dbus_annotations))
1593
1093
except AttributeError:
1594
1094
pass
1595
1095
# Define a creator of a function to call both the
1600
1100
"""This function is a scope container to pass
1601
1101
func1 and func2 to the "call_both" function
1602
1102
outside of its arguments"""
1603
1604
@functools.wraps(func2)
1605
1103
def call_both(*args, **kwargs):
1606
1104
"""This function will emit two D-Bus
1607
1105
signals by calling func1 and func2"""
1608
1106
func1(*args, **kwargs)
1609
1107
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
1108
return call_both
1616
1109
# Create the "call_both" function and add it to
1617
1110
# the class
1622
1115
# object. Decorate it to be a new D-Bus method
1623
1116
# with the alternate D-Bus interface name. Add it
1624
1117
# 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)))
1118
attr[attrname] = (dbus.service.method
1119
(alt_interface,
1120
attribute._dbus_in_signature,
1121
attribute._dbus_out_signature)
1122
(types.FunctionType
1123
(attribute.func_code,
1124
attribute.func_globals,
1125
attribute.func_name,
1126
attribute.func_defaults,
1127
attribute.func_closure)))
1631
1128
# Copy annotations, if any
1632
1129
try:
1633
attr[attrname]._dbus_annotations = dict(
1634
attribute._dbus_annotations)
1130
attr[attrname]._dbus_annotations = (
1131
dict(attribute._dbus_annotations))
1635
1132
except AttributeError:
1636
1133
pass
1637
1134
# Is this a D-Bus property?
1640
1137
# object, and decorate it to be a new D-Bus
1641
1138
# property with the alternate D-Bus interface
1642
1139
# 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)))
1140
attr[attrname] = (dbus_service_property
1141
(alt_interface,
1142
attribute._dbus_signature,
1143
attribute._dbus_access,
1144
attribute
1145
._dbus_get_args_options
1146
["byte_arrays"])
1147
(types.FunctionType
1148
(attribute.func_code,
1149
attribute.func_globals,
1150
attribute.func_name,
1151
attribute.func_defaults,
1152
attribute.func_closure)))
1649
1153
# Copy annotations, if any
1650
1154
try:
1651
attr[attrname]._dbus_annotations = dict(
1652
attribute._dbus_annotations)
1155
attr[attrname]._dbus_annotations = (
1156
dict(attribute._dbus_annotations))
1653
1157
except AttributeError:
1654
1158
pass
1655
1159
# Is this a D-Bus interface?
1658
1162
# object. Decorate it to be a new D-Bus interface
1659
1163
# with the alternate D-Bus interface name. Add it
1660
1164
# to the class.
1661
attr[attrname] = (
1662
dbus_interface_annotations(alt_interface)
1663
(copy_function(attribute)))
1165
attr[attrname] = (dbus_interface_annotations
1166
(alt_interface)
1167
(types.FunctionType
1168
(attribute.func_code,
1169
attribute.func_globals,
1170
attribute.func_name,
1171
attribute.func_defaults,
1172
attribute.func_closure)))
1664
1173
if deprecate:
1665
1174
# Deprecate all alternate interfaces
1666
iname="_AlternateDBusNames_interface_annotation{}"
1175
iname="_AlternateDBusNames_interface_annotation{0}"
1667
1176
for interface_name in interface_names:
1668
1669
1177
@dbus_interface_annotations(interface_name)
1670
1178
def func(self):
1671
1179
return { "org.freedesktop.DBus.Deprecated":
1672
"true" }
1180
"true" }
1673
1181
# Find an unused name
1674
1182
for aname in (iname.format(i)
1675
1183
for i in itertools.count()):
1679
1187
if interface_names:
1680
1188
# Replace the class with a new subclass of it with
1681
1189
# 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)
1190
cls = type(b"{0}Alternate".format(cls.__name__),
1191
(cls,), attr)
1688
1192
return cls
1689
1690
1193
return wrapper
1691
1194
1692
1195
1693
1196
@alternate_dbus_interfaces({"se.recompile.Mandos":
1694
"se.bsnet.fukt.Mandos"})
1197
"se.bsnet.fukt.Mandos"})
1695
1198
class ClientDBus(Client, DBusObjectWithProperties):
1696
1199
"""A Client class using D-Bus
1697
1200
1701
1204
"""
1702
1205
1703
1206
runtime_expansions = (Client.runtime_expansions
1704
+ ("dbus_object_path", ))
1705
1706
_interface = "se.recompile.Mandos.Client"
1207
+ ("dbus_object_path",))
1707
1208
1708
1209
# dbus.service.Object doesn't use super(), so we can't either.
1709
1210
1712
1213
Client.__init__(self, *args, **kwargs)
1713
1214
# Only now, when this client is initialized, can it show up on
1714
1215
# the D-Bus
1715
client_object_name = str(self.name).translate(
1216
client_object_name = unicode(self.name).translate(
1716
1217
{ord("."): ord("_"),
1717
1218
ord("-"): ord("_")})
1718
self.dbus_object_path = dbus.ObjectPath(
1719
"/clients/" + client_object_name)
1219
self.dbus_object_path = (dbus.ObjectPath
1220
("/clients/" + client_object_name))
1720
1221
DBusObjectWithProperties.__init__(self, self.bus,
1721
1222
self.dbus_object_path)
1722
1223
1723
def notifychangeproperty(transform_func, dbus_name,
1724
type_func=lambda x: x,
1725
variant_level=1,
1726
invalidate_only=False,
1727
_interface=_interface):
1224
def notifychangeproperty(transform_func,
1225
dbus_name, type_func=lambda x: x,
1226
variant_level=1):
1728
1227
""" Modify a variable so that it's a property which announces
1729
1228
its changes to DBus.
1730
1229
1735
1234
to the D-Bus. Default: no transform
1736
1235
variant_level: D-Bus variant level. Default: 1
1737
1236
"""
1738
attrname = "_{}".format(dbus_name)
1739
1237
attrname = "_{0}".format(dbus_name)
1740
1238
def setter(self, value):
1741
1239
if hasattr(self, "dbus_object_path"):
1742
1240
if (not hasattr(self, attrname) or
1743
1241
type_func(getattr(self, attrname, None))
1744
1242
!= 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())
1243
dbus_value = transform_func(type_func(value),
1244
variant_level
1245
=variant_level)
1246
self.PropertyChanged(dbus.String(dbus_name),
1247
dbus_value)
1760
1248
setattr(self, attrname, value)
1761
1249
1762
1250
return property(lambda self: getattr(self, attrname), setter)
1768
1256
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1769
1257
last_enabled = notifychangeproperty(datetime_to_dbus,
1770
1258
"LastEnabled")
1771
checker = notifychangeproperty(
1772
dbus.Boolean, "CheckerRunning",
1773
type_func = lambda checker: checker is not None)
1259
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1260
type_func = lambda checker:
1261
checker is not None)
1774
1262
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1775
1263
"LastCheckedOK")
1776
1264
last_checker_status = notifychangeproperty(dbus.Int16,
1779
1267
datetime_to_dbus, "LastApprovalRequest")
1780
1268
approved_by_default = notifychangeproperty(dbus.Boolean,
1781
1269
"ApprovedByDefault")
1782
approval_delay = notifychangeproperty(
1783
dbus.UInt64, "ApprovalDelay",
1784
type_func = lambda td: td.total_seconds() * 1000)
1270
approval_delay = notifychangeproperty(dbus.UInt64,
1271
"ApprovalDelay",
1272
type_func =
1273
timedelta_to_milliseconds)
1785
1274
approval_duration = notifychangeproperty(
1786
1275
dbus.UInt64, "ApprovalDuration",
1787
type_func = lambda td: td.total_seconds() * 1000)
1276
type_func = timedelta_to_milliseconds)
1788
1277
host = notifychangeproperty(dbus.String, "Host")
1789
timeout = notifychangeproperty(
1790
dbus.UInt64, "Timeout",
1791
type_func = lambda td: td.total_seconds() * 1000)
1278
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1279
type_func =
1280
timedelta_to_milliseconds)
1792
1281
extended_timeout = notifychangeproperty(
1793
1282
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)
1283
type_func = timedelta_to_milliseconds)
1284
interval = notifychangeproperty(dbus.UInt64,
1285
"Interval",
1286
type_func =
1287
timedelta_to_milliseconds)
1798
1288
checker_command = notifychangeproperty(dbus.String, "Checker")
1799
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1800
invalidate_only=True)
1801
1289
1802
1290
del notifychangeproperty
1803
1291
1810
1298
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1811
1299
Client.__del__(self, *args, **kwargs)
1812
1300
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:
1301
def checker_callback(self, pid, condition, command,
1302
*args, **kwargs):
1303
self.checker_callback_tag = None
1304
self.checker = None
1305
if os.WIFEXITED(condition):
1306
exitstatus = os.WEXITSTATUS(condition)
1820
1307
# Emit D-Bus signal
1821
1308
self.CheckerCompleted(dbus.Int16(exitstatus),
1822
# This is specific to GNU libC
1823
dbus.Int64(exitstatus << 8),
1309
dbus.Int64(condition),
1824
1310
dbus.String(command))
1825
1311
else:
1826
1312
# Emit D-Bus signal
1827
1313
self.CheckerCompleted(dbus.Int16(-1),
1828
dbus.Int64(
1829
# This is specific to GNU libC
1830
(exitstatus << 8)
1831
| self.last_checker_signal),
1314
dbus.Int64(condition),
1832
1315
dbus.String(command))
1833
return ret
1316
1317
return Client.checker_callback(self, pid, condition, command,
1318
*args, **kwargs)
1834
1319
1835
1320
def start_checker(self, *args, **kwargs):
1836
old_checker_pid = getattr(self.checker, "pid", None)
1321
old_checker = self.checker
1322
if self.checker is not None:
1323
old_checker_pid = self.checker.pid
1324
else:
1325
old_checker_pid = None
1837
1326
r = Client.start_checker(self, *args, **kwargs)
1838
1327
# Only if new checker process was started
1839
1328
if (self.checker is not None
1848
1337
1849
1338
def approve(self, value=True):
1850
1339
self.approved = value
1851
GLib.timeout_add(int(self.approval_duration.total_seconds()
1852
* 1000), self._reset_approved)
1340
gobject.timeout_add(timedelta_to_milliseconds
1341
(self.approval_duration),
1342
self._reset_approved)
1853
1343
self.send_changedstate()
1854
1344
1855
1345
## D-Bus methods, signals & properties
1346
_interface = "se.recompile.Mandos.Client"
1856
1347
1857
1348
## Interfaces
1858
1349
1350
@dbus_interface_annotations(_interface)
1351
def _foo(self):
1352
return { "org.freedesktop.DBus.Property.EmitsChangedSignal":
1353
"false"}
1354
1859
1355
## Signals
1860
1356
1861
1357
# CheckerCompleted - signal
1871
1367
pass
1872
1368
1873
1369
# PropertyChanged - signal
1874
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1875
1370
@dbus.service.signal(_interface, signature="sv")
1876
1371
def PropertyChanged(self, property, value):
1877
1372
"D-Bus signal"
1911
1406
self.checked_ok()
1912
1407
1913
1408
# Enable - method
1914
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1915
1409
@dbus.service.method(_interface)
1916
1410
def Enable(self):
1917
1411
"D-Bus method"
1918
1412
self.enable()
1919
1413
1920
1414
# StartChecker - method
1921
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1922
1415
@dbus.service.method(_interface)
1923
1416
def StartChecker(self):
1924
1417
"D-Bus method"
1925
1418
self.start_checker()
1926
1419
1927
1420
# Disable - method
1928
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1929
1421
@dbus.service.method(_interface)
1930
1422
def Disable(self):
1931
1423
"D-Bus method"
1932
1424
self.disable()
1933
1425
1934
1426
# StopChecker - method
1935
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1936
1427
@dbus.service.method(_interface)
1937
1428
def StopChecker(self):
1938
1429
self.stop_checker()
1945
1436
return dbus.Boolean(bool(self.approvals_pending))
1946
1437
1947
1438
# ApprovedByDefault - property
1948
@dbus_service_property(_interface,
1949
signature="b",
1439
@dbus_service_property(_interface, signature="b",
1950
1440
access="readwrite")
1951
1441
def ApprovedByDefault_dbus_property(self, value=None):
1952
1442
if value is None: # get
1954
1444
self.approved_by_default = bool(value)
1955
1445
1956
1446
# ApprovalDelay - property
1957
@dbus_service_property(_interface,
1958
signature="t",
1447
@dbus_service_property(_interface, signature="t",
1959
1448
access="readwrite")
1960
1449
def ApprovalDelay_dbus_property(self, value=None):
1961
1450
if value is None: # get
1962
return dbus.UInt64(self.approval_delay.total_seconds()
1963
* 1000)
1451
return dbus.UInt64(self.approval_delay_milliseconds())
1964
1452
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1965
1453
1966
1454
# ApprovalDuration - property
1967
@dbus_service_property(_interface,
1968
signature="t",
1455
@dbus_service_property(_interface, signature="t",
1969
1456
access="readwrite")
1970
1457
def ApprovalDuration_dbus_property(self, value=None):
1971
1458
if value is None: # get
1972
return dbus.UInt64(self.approval_duration.total_seconds()
1973
* 1000)
1459
return dbus.UInt64(timedelta_to_milliseconds(
1460
self.approval_duration))
1974
1461
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1975
1462
1976
1463
# Name - property
1977
@dbus_annotations(
1978
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1979
1464
@dbus_service_property(_interface, signature="s", access="read")
1980
1465
def Name_dbus_property(self):
1981
1466
return dbus.String(self.name)
1982
1467
1983
1468
# Fingerprint - property
1984
@dbus_annotations(
1985
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1986
1469
@dbus_service_property(_interface, signature="s", access="read")
1987
1470
def Fingerprint_dbus_property(self):
1988
1471
return dbus.String(self.fingerprint)
1989
1472
1990
1473
# Host - property
1991
@dbus_service_property(_interface,
1992
signature="s",
1474
@dbus_service_property(_interface, signature="s",
1993
1475
access="readwrite")
1994
1476
def Host_dbus_property(self, value=None):
1995
1477
if value is None: # get
1996
1478
return dbus.String(self.host)
1997
self.host = str(value)
1479
self.host = unicode(value)
1998
1480
1999
1481
# Created - property
2000
@dbus_annotations(
2001
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2002
1482
@dbus_service_property(_interface, signature="s", access="read")
2003
1483
def Created_dbus_property(self):
2004
1484
return datetime_to_dbus(self.created)
2009
1489
return datetime_to_dbus(self.last_enabled)
2010
1490
2011
1491
# Enabled - property
2012
@dbus_service_property(_interface,
2013
signature="b",
1492
@dbus_service_property(_interface, signature="b",
2014
1493
access="readwrite")
2015
1494
def Enabled_dbus_property(self, value=None):
2016
1495
if value is None: # get
2021
1500
self.disable()
2022
1501
2023
1502
# LastCheckedOK - property
2024
@dbus_service_property(_interface,
2025
signature="s",
1503
@dbus_service_property(_interface, signature="s",
2026
1504
access="readwrite")
2027
1505
def LastCheckedOK_dbus_property(self, value=None):
2028
1506
if value is not None:
2031
1509
return datetime_to_dbus(self.last_checked_ok)
2032
1510
2033
1511
# LastCheckerStatus - property
2034
@dbus_service_property(_interface, signature="n", access="read")
1512
@dbus_service_property(_interface, signature="n",
1513
access="read")
2035
1514
def LastCheckerStatus_dbus_property(self):
2036
1515
return dbus.Int16(self.last_checker_status)
2037
1516
2046
1525
return datetime_to_dbus(self.last_approval_request)
2047
1526
2048
1527
# Timeout - property
2049
@dbus_service_property(_interface,
2050
signature="t",
1528
@dbus_service_property(_interface, signature="t",
2051
1529
access="readwrite")
2052
1530
def Timeout_dbus_property(self, value=None):
2053
1531
if value is None: # get
2054
return dbus.UInt64(self.timeout.total_seconds() * 1000)
1532
return dbus.UInt64(self.timeout_milliseconds())
2055
1533
old_timeout = self.timeout
2056
1534
self.timeout = datetime.timedelta(0, 0, 0, value)
2057
1535
# Reschedule disabling
2065
1543
if (getattr(self, "disable_initiator_tag", None)
2066
1544
is None):
2067
1545
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)
1546
gobject.source_remove(self.disable_initiator_tag)
1547
self.disable_initiator_tag = (
1548
gobject.timeout_add(
1549
timedelta_to_milliseconds(self.expires - now),
1550
self.disable))
2072
1551
2073
1552
# ExtendedTimeout - property
2074
@dbus_service_property(_interface,
2075
signature="t",
1553
@dbus_service_property(_interface, signature="t",
2076
1554
access="readwrite")
2077
1555
def ExtendedTimeout_dbus_property(self, value=None):
2078
1556
if value is None: # get
2079
return dbus.UInt64(self.extended_timeout.total_seconds()
2080
* 1000)
1557
return dbus.UInt64(self.extended_timeout_milliseconds())
2081
1558
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2082
1559
2083
1560
# Interval - property
2084
@dbus_service_property(_interface,
2085
signature="t",
1561
@dbus_service_property(_interface, signature="t",
2086
1562
access="readwrite")
2087
1563
def Interval_dbus_property(self, value=None):
2088
1564
if value is None: # get
2089
return dbus.UInt64(self.interval.total_seconds() * 1000)
1565
return dbus.UInt64(self.interval_milliseconds())
2090
1566
self.interval = datetime.timedelta(0, 0, 0, value)
2091
1567
if getattr(self, "checker_initiator_tag", None) is None:
2092
1568
return
2093
1569
if self.enabled:
2094
1570
# 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
1571
gobject.source_remove(self.checker_initiator_tag)
1572
self.checker_initiator_tag = (gobject.timeout_add
1573
(value, self.start_checker))
1574
self.start_checker() # Start one now, too
2099
1575
2100
1576
# Checker - property
2101
@dbus_service_property(_interface,
2102
signature="s",
1577
@dbus_service_property(_interface, signature="s",
2103
1578
access="readwrite")
2104
1579
def Checker_dbus_property(self, value=None):
2105
1580
if value is None: # get
2106
1581
return dbus.String(self.checker_command)
2107
self.checker_command = str(value)
1582
self.checker_command = unicode(value)
2108
1583
2109
1584
# CheckerRunning - property
2110
@dbus_service_property(_interface,
2111
signature="b",
1585
@dbus_service_property(_interface, signature="b",
2112
1586
access="readwrite")
2113
1587
def CheckerRunning_dbus_property(self, value=None):
2114
1588
if value is None: # get
2119
1593
self.stop_checker()
2120
1594
2121
1595
# ObjectPath - property
2122
@dbus_annotations(
2123
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2124
"org.freedesktop.DBus.Deprecated": "true"})
2125
1596
@dbus_service_property(_interface, signature="o", access="read")
2126
1597
def ObjectPath_dbus_property(self):
2127
1598
return self.dbus_object_path # is already a dbus.ObjectPath
2128
1599
2129
1600
# Secret = property
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)
1601
@dbus_service_property(_interface, signature="ay",
1602
access="write", byte_arrays=True)
2137
1603
def Secret_dbus_property(self, value):
2138
self.secret = bytes(value)
1604
self.secret = str(value)
2139
1605
2140
1606
del _interface
2141
1607
2145
1611
self._pipe = child_pipe
2146
1612
self._pipe.send(('init', fpr, address))
2147
1613
if not self._pipe.recv():
2148
raise KeyError(fpr)
1614
raise KeyError()
2149
1615
2150
1616
def __getattribute__(self, name):
2151
1617
if name == '_pipe':
2155
1621
if data[0] == 'data':
2156
1622
return data[1]
2157
1623
if data[0] == 'function':
2158
2159
1624
def func(*args, **kwargs):
2160
1625
self._pipe.send(('funcall', name, args, kwargs))
2161
1626
return self._pipe.recv()[1]
2162
2163
1627
return func
2164
1628
2165
1629
def __setattr__(self, name, value):
2177
1641
def handle(self):
2178
1642
with contextlib.closing(self.server.child_pipe) as child_pipe:
2179
1643
logger.info("TCP connection from: %s",
2180
str(self.client_address))
1644
unicode(self.client_address))
2181
1645
logger.debug("Pipe FD: %d",
2182
1646
self.server.child_pipe.fileno())
2183
1647
2184
session = gnutls.ClientSession(self.request)
1648
session = (gnutls.connection
1649
.ClientSession(self.request,
1650
gnutls.connection
1651
.X509Credentials()))
1652
1653
# Note: gnutls.connection.X509Credentials is really a
1654
# generic GnuTLS certificate credentials object so long as
1655
# no X.509 keys are added to it. Therefore, we can use it
1656
# here despite using OpenPGP certificates.
2185
1657
2186
1658
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
2187
1659
# "+AES-256-CBC", "+SHA1",
2191
1663
priority = self.server.gnutls_priority
2192
1664
if priority is None:
2193
1665
priority = "NORMAL"
2194
gnutls.priority_set_direct(session._c_object,
2195
priority.encode("utf-8"),
2196
None)
1666
(gnutls.library.functions
1667
.gnutls_priority_set_direct(session._c_object,
1668
priority, None))
2197
1669
2198
1670
# Start communication using the Mandos protocol
2199
1671
# Get protocol number
2201
1673
logger.debug("Protocol version: %r", line)
2202
1674
try:
2203
1675
if int(line.strip().split()[0]) > 1:
2204
raise RuntimeError(line)
1676
raise RuntimeError
2205
1677
except (ValueError, IndexError, RuntimeError) as error:
2206
1678
logger.error("Unknown protocol version: %s", error)
2207
1679
return
2209
1681
# Start GnuTLS connection
2210
1682
try:
2211
1683
session.handshake()
2212
except gnutls.Error as error:
1684
except gnutls.errors.GNUTLSError as error:
2213
1685
logger.warning("Handshake failed: %s", error)
2214
1686
# Do not run session.bye() here: the session is not
2215
1687
# established. Just abandon the request.
2219
1691
approval_required = False
2220
1692
try:
2221
1693
try:
2222
fpr = self.fingerprint(
2223
self.peer_certificate(session))
2224
except (TypeError, gnutls.Error) as error:
1694
fpr = self.fingerprint(self.peer_certificate
1695
(session))
1696
except (TypeError,
1697
gnutls.errors.GNUTLSError) as error:
2225
1698
logger.warning("Bad certificate: %s", error)
2226
1699
return
2227
1700
logger.debug("Fingerprint: %s", fpr)
2240
1713
while True:
2241
1714
if not client.enabled:
2242
1715
logger.info("Client %s is disabled",
2243
client.name)
1716
client.name)
2244
1717
if self.server.use_dbus:
2245
1718
# Emit D-Bus signal
2246
1719
client.Rejected("Disabled")
2255
1728
if self.server.use_dbus:
2256
1729
# Emit D-Bus signal
2257
1730
client.NeedApproval(
2258
client.approval_delay.total_seconds()
2259
* 1000, client.approved_by_default)
1731
client.approval_delay_milliseconds(),
1732
client.approved_by_default)
2260
1733
else:
2261
1734
logger.warning("Client %s was not approved",
2262
1735
client.name)
2268
1741
#wait until timeout or approved
2269
1742
time = datetime.datetime.now()
2270
1743
client.changedstate.acquire()
2271
client.changedstate.wait(delay.total_seconds())
1744
client.changedstate.wait(
1745
float(timedelta_to_milliseconds(delay)
1746
/ 1000))
2272
1747
client.changedstate.release()
2273
1748
time2 = datetime.datetime.now()
2274
1749
if (time2 - time) >= delay:
2285
1760
else:
2286
1761
delay -= time2 - time
2287
1762
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
1763
sent_size = 0
1764
while sent_size < len(client.secret):
1765
try:
1766
sent = session.send(client.secret[sent_size:])
1767
except gnutls.errors.GNUTLSError as error:
1768
logger.warning("gnutls send failed",
1769
exc_info=error)
1770
return
1771
logger.debug("Sent: %d, remaining: %d",
1772
sent, len(client.secret)
1773
- (sent_size + sent))
1774
sent_size += sent
2294
1775
2295
1776
logger.info("Sending secret to %s", client.name)
2296
1777
# bump the timeout using extended_timeout
2304
1785
client.approvals_pending -= 1
2305
1786
try:
2306
1787
session.bye()
2307
except gnutls.Error as error:
1788
except gnutls.errors.GNUTLSError as error:
2308
1789
logger.warning("GnuTLS bye failed",
2309
1790
exc_info=error)
2310
1791
2312
1793
def peer_certificate(session):
2313
1794
"Return the peer's OpenPGP certificate as a bytestring"
2314
1795
# If not an OpenPGP certificate...
2315
if (gnutls.certificate_type_get(session._c_object)
2316
!= gnutls.CRT_OPENPGP):
2317
# ...return invalid data
2318
return b""
1796
if (gnutls.library.functions
1797
.gnutls_certificate_type_get(session._c_object)
1798
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1799
# ...do the normal thing
1800
return session.peer_certificate
2319
1801
list_size = ctypes.c_uint(1)
2320
cert_list = (gnutls.certificate_get_peers
1802
cert_list = (gnutls.library.functions
1803
.gnutls_certificate_get_peers
2321
1804
(session._c_object, ctypes.byref(list_size)))
2322
1805
if not bool(cert_list) and list_size.value != 0:
2323
raise gnutls.Error("error getting peer certificate")
1806
raise gnutls.errors.GNUTLSError("error getting peer"
1807
" certificate")
2324
1808
if list_size.value == 0:
2325
1809
return None
2326
1810
cert = cert_list[0]
2330
1814
def fingerprint(openpgp):
2331
1815
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2332
1816
# New GnuTLS "datum" with the OpenPGP public key
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)))
1817
datum = (gnutls.library.types
1818
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1819
ctypes.POINTER
1820
(ctypes.c_ubyte)),
1821
ctypes.c_uint(len(openpgp))))
2337
1822
# New empty GnuTLS certificate
2338
crt = gnutls.openpgp_crt_t()
2339
gnutls.openpgp_crt_init(ctypes.byref(crt))
1823
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1824
(gnutls.library.functions
1825
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2340
1826
# Import the OpenPGP public key into the certificate
2341
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2342
gnutls.OPENPGP_FMT_RAW)
1827
(gnutls.library.functions
1828
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1829
gnutls.library.constants
1830
.GNUTLS_OPENPGP_FMT_RAW))
2343
1831
# Verify the self signature in the key
2344
1832
crtverify = ctypes.c_uint()
2345
gnutls.openpgp_crt_verify_self(crt, 0,
2346
ctypes.byref(crtverify))
1833
(gnutls.library.functions
1834
.gnutls_openpgp_crt_verify_self(crt, 0,
1835
ctypes.byref(crtverify)))
2347
1836
if crtverify.value != 0:
2348
gnutls.openpgp_crt_deinit(crt)
2349
raise gnutls.CertificateSecurityError("Verify failed")
1837
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1838
raise (gnutls.errors.CertificateSecurityError
1839
("Verify failed"))
2350
1840
# New buffer for the fingerprint
2351
1841
buf = ctypes.create_string_buffer(20)
2352
1842
buf_len = ctypes.c_size_t()
2353
1843
# Get the fingerprint from the certificate into the buffer
2354
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2355
ctypes.byref(buf_len))
1844
(gnutls.library.functions
1845
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1846
ctypes.byref(buf_len)))
2356
1847
# Deinit the certificate
2357
gnutls.openpgp_crt_deinit(crt)
1848
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2358
1849
# Convert the buffer to a Python bytestring
2359
1850
fpr = ctypes.string_at(buf, buf_len.value)
2360
1851
# Convert the bytestring to hexadecimal notation
2364
1855
2365
1856
class MultiprocessingMixIn(object):
2366
1857
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2367
2368
1858
def sub_process_main(self, request, address):
2369
1859
try:
2370
1860
self.finish_request(request, address)
2382
1872
2383
1873
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2384
1874
""" adds a pipe to the MixIn """
2385
2386
1875
def process_request(self, request, client_address):
2387
1876
"""Overrides and wraps the original process_request().
2388
1877
2397
1886
2398
1887
def add_pipe(self, parent_pipe, proc):
2399
1888
"""Dummy function; override as necessary"""
2400
raise NotImplementedError()
1889
raise NotImplementedError
2401
1890
2402
1891
2403
1892
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2409
1898
interface: None or a network interface name (string)
2410
1899
use_ipv6: Boolean; to use IPv6 or not
2411
1900
"""
2412
2413
1901
def __init__(self, server_address, RequestHandlerClass,
2414
interface=None,
2415
use_ipv6=True,
2416
socketfd=None):
1902
interface=None, use_ipv6=True, socketfd=None):
2417
1903
"""If socketfd is set, use that file descriptor instead of
2418
1904
creating a new one with socket.socket().
2419
1905
"""
2453
1939
"""This overrides the normal server_bind() function
2454
1940
to bind to an interface if one was specified, and also NOT to
2455
1941
bind to an address or port if they were not specified."""
2456
global SO_BINDTODEVICE
2457
1942
if self.interface is not None:
2458
1943
if SO_BINDTODEVICE is None:
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
1944
logger.error("SO_BINDTODEVICE does not exist;"
1945
" cannot bind to interface %s",
1946
self.interface)
1947
else:
1948
try:
1949
self.socket.setsockopt(socket.SOL_SOCKET,
1950
SO_BINDTODEVICE,
1951
str(self.interface + '\0'))
1952
except socket.error as error:
1953
if error.errno == errno.EPERM:
1954
logger.error("No permission to bind to"
1955
" interface %s", self.interface)
1956
elif error.errno == errno.ENOPROTOOPT:
1957
logger.error("SO_BINDTODEVICE not available;"
1958
" cannot bind to interface %s",
1959
self.interface)
1960
elif error.errno == errno.ENODEV:
1961
logger.error("Interface %s does not exist,"
1962
" cannot bind", self.interface)
1963
else:
1964
raise
2480
1965
# Only bind(2) the socket if we really need to.
2481
1966
if self.server_address[0] or self.server_address[1]:
2482
1967
if not self.server_address[0]:
2483
1968
if self.address_family == socket.AF_INET6:
2484
1969
any_address = "::" # in6addr_any
2485
1970
else:
2486
any_address = "0.0.0.0" # INADDR_ANY
1971
any_address = socket.INADDR_ANY
2487
1972
self.server_address = (any_address,
2488
1973
self.server_address[1])
2489
1974
elif not self.server_address[1]:
2490
self.server_address = (self.server_address[0], 0)
1975
self.server_address = (self.server_address[0],
1976
0)
2491
1977
# if self.interface:
2492
1978
# self.server_address = (self.server_address[0],
2493
1979
# 0, # port
2505
1991
gnutls_priority GnuTLS priority string
2506
1992
use_dbus: Boolean; to emit D-Bus signals or not
2507
1993
2508
Assumes a GLib.MainLoop event loop.
1994
Assumes a gobject.MainLoop event loop.
2509
1995
"""
2510
2511
1996
def __init__(self, server_address, RequestHandlerClass,
2512
interface=None,
2513
use_ipv6=True,
2514
clients=None,
2515
gnutls_priority=None,
2516
use_dbus=True,
2517
socketfd=None):
1997
interface=None, use_ipv6=True, clients=None,
1998
gnutls_priority=None, use_dbus=True, socketfd=None):
2518
1999
self.enabled = False
2519
2000
self.clients = clients
2520
2001
if self.clients is None:
2526
2007
interface = interface,
2527
2008
use_ipv6 = use_ipv6,
2528
2009
socketfd = socketfd)
2529
2530
2010
def server_activate(self):
2531
2011
if self.enabled:
2532
2012
return socketserver.TCPServer.server_activate(self)
2536
2016
2537
2017
def add_pipe(self, parent_pipe, proc):
2538
2018
# Call "handle_ipc" for both data and EOF events
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))
2019
gobject.io_add_watch(parent_pipe.fileno(),
2020
gobject.IO_IN | gobject.IO_HUP,
2021
functools.partial(self.handle_ipc,
2022
parent_pipe =
2023
parent_pipe,
2024
proc = proc))
2545
2025
2546
def handle_ipc(self, source, condition,
2547
parent_pipe=None,
2548
proc = None,
2549
client_object=None):
2026
def handle_ipc(self, source, condition, parent_pipe=None,
2027
proc = None, client_object=None):
2550
2028
# error, or the other end of multiprocessing.Pipe has closed
2551
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2029
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2552
2030
# Wait for other process to exit
2553
2031
proc.join()
2554
2032
return False
2561
2039
fpr = request[1]
2562
2040
address = request[2]
2563
2041
2564
for c in self.clients.values():
2042
for c in self.clients.itervalues():
2565
2043
if c.fingerprint == fpr:
2566
2044
client = c
2567
2045
break
2575
2053
parent_pipe.send(False)
2576
2054
return False
2577
2055
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))
2056
gobject.io_add_watch(parent_pipe.fileno(),
2057
gobject.IO_IN | gobject.IO_HUP,
2058
functools.partial(self.handle_ipc,
2059
parent_pipe =
2060
parent_pipe,
2061
proc = proc,
2062
client_object =
2063
client))
2585
2064
parent_pipe.send(True)
2586
2065
# remove the old hook in favor of the new above hook on
2587
2066
# same fileno
2593
2072
2594
2073
parent_pipe.send(('data', getattr(client_object,
2595
2074
funcname)(*args,
2596
**kwargs)))
2075
**kwargs)))
2597
2076
2598
2077
if command == 'getattr':
2599
2078
attrname = request[1]
2600
if isinstance(client_object.__getattribute__(attrname),
2601
collections.Callable):
2602
parent_pipe.send(('function', ))
2079
if callable(client_object.__getattribute__(attrname)):
2080
parent_pipe.send(('function',))
2603
2081
else:
2604
parent_pipe.send((
2605
'data', client_object.__getattribute__(attrname)))
2082
parent_pipe.send(('data', client_object
2083
.__getattribute__(attrname)))
2606
2084
2607
2085
if command == 'setattr':
2608
2086
attrname = request[1]
2612
2090
return True
2613
2091
2614
2092
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
2711
2093
def string_to_delta(interval):
2712
2094
"""Parse a string and return a datetime.timedelta
2713
2095
2724
2106
>>> string_to_delta('5m 30s')
2725
2107
datetime.timedelta(0, 330)
2726
2108
"""
2727
2728
try:
2729
return rfc3339_duration_to_delta(interval)
2730
except ValueError:
2731
pass
2732
2733
2109
timevalue = datetime.timedelta(0)
2734
2110
for s in interval.split():
2735
2111
try:
2736
suffix = s[-1]
2112
suffix = unicode(s[-1])
2737
2113
value = int(s[:-1])
2738
2114
if suffix == "d":
2739
2115
delta = datetime.timedelta(value)
2746
2122
elif suffix == "w":
2747
2123
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2748
2124
else:
2749
raise ValueError("Unknown suffix {!r}".format(suffix))
2750
except IndexError as e:
2125
raise ValueError("Unknown suffix {0!r}"
2126
.format(suffix))
2127
except (ValueError, IndexError) as e:
2751
2128
raise ValueError(*(e.args))
2752
2129
timevalue += delta
2753
2130
return timevalue
2769
2146
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2770
2147
if not stat.S_ISCHR(os.fstat(null).st_mode):
2771
2148
raise OSError(errno.ENODEV,
2772
"{} not a character device"
2149
"{0} not a character device"
2773
2150
.format(os.devnull))
2774
2151
os.dup2(null, sys.stdin.fileno())
2775
2152
os.dup2(null, sys.stdout.fileno())
2785
2162
2786
2163
parser = argparse.ArgumentParser()
2787
2164
parser.add_argument("-v", "--version", action="version",
2788
version = "%(prog)s {}".format(version),
2165
version = "%(prog)s {0}".format(version),
2789
2166
help="show version number and exit")
2790
2167
parser.add_argument("-i", "--interface", metavar="IF",
2791
2168
help="Bind to interface IF")
2797
2174
help="Run self-test")
2798
2175
parser.add_argument("--debug", action="store_true",
2799
2176
help="Debug mode; run in foreground and log"
2800
" to terminal", default=None)
2177
" to terminal")
2801
2178
parser.add_argument("--debuglevel", metavar="LEVEL",
2802
2179
help="Debug level for stdout output")
2803
2180
parser.add_argument("--priority", help="GnuTLS"
2810
2187
" files")
2811
2188
parser.add_argument("--no-dbus", action="store_false",
2812
2189
dest="use_dbus", help="Do not provide D-Bus"
2813
" system bus interface", default=None)
2190
" system bus interface")
2814
2191
parser.add_argument("--no-ipv6", action="store_false",
2815
dest="use_ipv6", help="Do not use IPv6",
2816
default=None)
2192
dest="use_ipv6", help="Do not use IPv6")
2817
2193
parser.add_argument("--no-restore", action="store_false",
2818
2194
dest="restore", help="Do not restore stored"
2819
" state", default=None)
2195
" state")
2820
2196
parser.add_argument("--socket", type=int,
2821
2197
help="Specify a file descriptor to a network"
2822
2198
" socket to use instead of creating one")
2823
2199
parser.add_argument("--statedir", metavar="DIR",
2824
2200
help="Directory to save/restore state in")
2825
2201
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)
2202
help="Run in foreground")
2830
2203
2831
2204
options = parser.parse_args()
2832
2205
2833
2206
if options.check:
2834
2207
import doctest
2835
fail_count, test_count = doctest.testmod()
2836
sys.exit(os.EX_OK if fail_count == 0 else 1)
2208
doctest.testmod()
2209
sys.exit()
2837
2210
2838
2211
# Default values for config file for server-global settings
2839
2212
server_defaults = { "interface": "",
2841
2214
"port": "",
2842
2215
"debug": "False",
2843
2216
"priority":
2844
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2845
":+SIGN-DSA-SHA256",
2217
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2846
2218
"servicename": "Mandos",
2847
2219
"use_dbus": "True",
2848
2220
"use_ipv6": "True",
2851
2223
"socket": "",
2852
2224
"statedir": "/var/lib/mandos",
2853
2225
"foreground": "False",
2854
"zeroconf": "True",
2855
}
2226
}
2856
2227
2857
2228
# Parse config file for server-global settings
2858
2229
server_config = configparser.SafeConfigParser(server_defaults)
2859
2230
del server_defaults
2860
server_config.read(os.path.join(options.configdir, "mandos.conf"))
2231
server_config.read(os.path.join(options.configdir,
2232
"mandos.conf"))
2861
2233
# Convert the SafeConfigParser object to a dict
2862
2234
server_settings = server_config.defaults()
2863
2235
# Use the appropriate methods on the non-string config options
2881
2253
# Override the settings from the config file with command line
2882
2254
# options, if set.
2883
2255
for option in ("interface", "address", "port", "debug",
2884
"priority", "servicename", "configdir", "use_dbus",
2885
"use_ipv6", "debuglevel", "restore", "statedir",
2886
"socket", "foreground", "zeroconf"):
2256
"priority", "servicename", "configdir",
2257
"use_dbus", "use_ipv6", "debuglevel", "restore",
2258
"statedir", "socket", "foreground"):
2887
2259
value = getattr(options, option)
2888
2260
if value is not None:
2889
2261
server_settings[option] = value
2890
2262
del options
2891
2263
# Force all strings to be unicode
2892
2264
for option in server_settings.keys():
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])
2265
if type(server_settings[option]) is str:
2266
server_settings[option] = unicode(server_settings[option])
2900
2267
# Debug implies foreground
2901
2268
if server_settings["debug"]:
2902
2269
server_settings["foreground"] = True
2904
2271
2905
2272
##################################################################
2906
2273
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
2912
2274
# For convenience
2913
2275
debug = server_settings["debug"]
2914
2276
debuglevel = server_settings["debuglevel"]
2917
2279
stored_state_path = os.path.join(server_settings["statedir"],
2918
2280
stored_state_file)
2919
2281
foreground = server_settings["foreground"]
2920
zeroconf = server_settings["zeroconf"]
2921
2282
2922
2283
if debug:
2923
2284
initlogger(debug, logging.DEBUG)
2929
2290
initlogger(debug, level)
2930
2291
2931
2292
if server_settings["servicename"] != "Mandos":
2932
syslogger.setFormatter(
2933
logging.Formatter('Mandos ({}) [%(process)d]:'
2934
' %(levelname)s: %(message)s'.format(
2935
server_settings["servicename"])))
2293
syslogger.setFormatter(logging.Formatter
2294
('Mandos ({0}) [%(process)d]:'
2295
' %(levelname)s: %(message)s'
2296
.format(server_settings
2297
["servicename"])))
2936
2298
2937
2299
# Parse config file with clients
2938
2300
client_config = configparser.SafeConfigParser(Client
2943
2305
global mandos_dbus_service
2944
2306
mandos_dbus_service = None
2945
2307
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)
2308
tcp_server = MandosServer((server_settings["address"],
2309
server_settings["port"]),
2310
ClientHandler,
2311
interface=(server_settings["interface"]
2312
or None),
2313
use_ipv6=use_ipv6,
2314
gnutls_priority=
2315
server_settings["priority"],
2316
use_dbus=use_dbus,
2317
socketfd=(server_settings["socket"]
2318
or None))
2957
2319
if not foreground:
2958
pidfilename = "/run/mandos.pid"
2959
if not os.path.isdir("/run/."):
2960
pidfilename = "/var/run/mandos.pid"
2320
pidfilename = "/var/run/mandos.pid"
2961
2321
pidfile = None
2962
2322
try:
2963
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2323
pidfile = open(pidfilename, "w")
2964
2324
except IOError as e:
2965
2325
logger.error("Could not open file %r", pidfilename,
2966
2326
exc_info=e)
2967
2327
2968
for name, group in (("_mandos", "_mandos"),
2969
("mandos", "mandos"),
2970
("nobody", "nogroup")):
2328
for name in ("_mandos", "mandos", "nobody"):
2971
2329
try:
2972
2330
uid = pwd.getpwnam(name).pw_uid
2973
gid = pwd.getpwnam(group).pw_gid
2331
gid = pwd.getpwnam(name).pw_gid
2974
2332
break
2975
2333
except KeyError:
2976
2334
continue
2980
2338
try:
2981
2339
os.setgid(gid)
2982
2340
os.setuid(uid)
2983
if debug:
2984
logger.debug("Did setuid/setgid to {}:{}".format(uid,
2985
gid))
2986
2341
except OSError as error:
2987
logger.warning("Failed to setuid/setgid to {}:{}: {}"
2988
.format(uid, gid, os.strerror(error.errno)))
2989
2342
if error.errno != errno.EPERM:
2990
raise
2343
raise error
2991
2344
2992
2345
if debug:
2993
2346
# Enable all possible GnuTLS debugging
2994
2347
2995
2348
# "Use a log level over 10 to enable all debugging options."
2996
2349
# - GnuTLS manual
2997
gnutls.global_set_log_level(11)
2350
gnutls.library.functions.gnutls_global_set_log_level(11)
2998
2351
2999
@gnutls.log_func
2352
@gnutls.library.types.gnutls_log_func
3000
2353
def debug_gnutls(level, string):
3001
2354
logger.debug("GnuTLS: %s", string[:-1])
3002
2355
3003
gnutls.global_set_log_function(debug_gnutls)
2356
(gnutls.library.functions
2357
.gnutls_global_set_log_function(debug_gnutls))
3004
2358
3005
2359
# Redirect stdin so all checkers get /dev/null
3006
2360
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
3013
2367
# Close all input and output, do double fork, etc.
3014
2368
daemon()
3015
2369
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()
2370
# multiprocessing will use threads, so before we use gobject we
2371
# need to inform gobject that threads will be used.
2372
gobject.threads_init()
3019
2373
3020
2374
global main_loop
3021
2375
# From the Avahi example code
3022
2376
DBusGMainLoop(set_as_default=True)
3023
main_loop = GLib.MainLoop()
2377
main_loop = gobject.MainLoop()
3024
2378
bus = dbus.SystemBus()
3025
2379
# End of Avahi example code
3026
2380
if use_dbus:
3027
2381
try:
3028
2382
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:
2383
bus, do_not_queue=True)
2384
old_bus_name = (dbus.service.BusName
2385
("se.bsnet.fukt.Mandos", bus,
2386
do_not_queue=True))
2387
except dbus.exceptions.NameExistsException as e:
3035
2388
logger.error("Disabling D-Bus:", exc_info=e)
3036
2389
use_dbus = False
3037
2390
server_settings["use_dbus"] = False
3038
2391
tcp_server.use_dbus = False
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"))
2392
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2393
service = AvahiServiceToSyslog(name =
2394
server_settings["servicename"],
2395
servicetype = "_mandos._tcp",
2396
protocol = protocol, bus = bus)
2397
if server_settings["interface"]:
2398
service.interface = (if_nametoindex
2399
(str(server_settings["interface"])))
3049
2400
3050
2401
global multiprocessing_manager
3051
2402
multiprocessing_manager = multiprocessing.Manager()
3058
2409
old_client_settings = {}
3059
2410
clients_data = {}
3060
2411
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
2412
# Get client data and settings from last running state.
3070
2413
if server_settings["restore"]:
3071
2414
try:
3072
2415
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"))
2416
clients_data, old_client_settings = (pickle.load
2417
(stored_state))
3118
2418
os.remove(stored_state_path)
3119
2419
except IOError as e:
3120
2420
if e.errno == errno.ENOENT:
3121
logger.warning("Could not load persistent state:"
3122
" {}".format(os.strerror(e.errno)))
2421
logger.warning("Could not load persistent state: {0}"
2422
.format(os.strerror(e.errno)))
3123
2423
else:
3124
2424
logger.critical("Could not load persistent state:",
3125
2425
exc_info=e)
3126
2426
raise
3127
2427
except EOFError as e:
3128
2428
logger.warning("Could not load persistent state: "
3129
"EOFError:",
3130
exc_info=e)
2429
"EOFError:", exc_info=e)
3131
2430
3132
2431
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
2432
for client_name, client in clients_data.iteritems():
3138
2433
# Decide which value to use after restoring saved state.
3139
2434
# We have three different values: Old config file,
3140
2435
# new config file, and saved state.
3145
2440
# For each value in new config, check if it
3146
2441
# differs from the old config value (Except for
3147
2442
# the "secret" attribute)
3148
if (name != "secret"
3149
and (value !=
3150
old_client_settings[client_name][name])):
2443
if (name != "secret" and
2444
value != old_client_settings[client_name]
2445
[name]):
3151
2446
client[name] = value
3152
2447
except KeyError:
3153
2448
pass
3154
2449
3155
2450
# Clients who has passed its expire date can still be
3156
# enabled if its last checker was successful. A Client
2451
# enabled if its last checker was successful. Clients
3157
2452
# whose checker succeeded before we stored its state is
3158
2453
# assumed to have successfully run all checkers during
3159
2454
# downtime.
3161
2456
if datetime.datetime.utcnow() >= client["expires"]:
3162
2457
if not client["last_checked_ok"]:
3163
2458
logger.warning(
3164
"disabling client {} - Client never "
3165
"performed a successful checker".format(
3166
client_name))
2459
"disabling client {0} - Client never "
2460
"performed a successful checker"
2461
.format(client_name))
3167
2462
client["enabled"] = False
3168
2463
elif client["last_checker_status"] != 0:
3169
2464
logger.warning(
3170
"disabling client {} - Client last"
3171
" checker failed with error code"
3172
" {}".format(
3173
client_name,
3174
client["last_checker_status"]))
2465
"disabling client {0} - Client "
2466
"last checker failed with error code {1}"
2467
.format(client_name,
2468
client["last_checker_status"]))
3175
2469
client["enabled"] = False
3176
2470
else:
3177
client["expires"] = (
3178
datetime.datetime.utcnow()
3179
+ client["timeout"])
2471
client["expires"] = (datetime.datetime
2472
.utcnow()
2473
+ client["timeout"])
3180
2474
logger.debug("Last checker succeeded,"
3181
" keeping {} enabled".format(
3182
client_name))
2475
" keeping {0} enabled"
2476
.format(client_name))
3183
2477
try:
3184
client["secret"] = pgp.decrypt(
3185
client["encrypted_secret"],
3186
client_settings[client_name]["secret"])
2478
client["secret"] = (
2479
pgp.decrypt(client["encrypted_secret"],
2480
client_settings[client_name]
2481
["secret"]))
3187
2482
except PGPError:
3188
2483
# 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"])
2484
logger.debug("Failed to decrypt {0} old secret"
2485
.format(client_name))
2486
client["secret"] = (
2487
client_settings[client_name]["secret"])
3193
2488
3194
2489
# Add/remove clients based on new changes made to config
3195
2490
for client_name in (set(old_client_settings)
3200
2495
clients_data[client_name] = client_settings[client_name]
3201
2496
3202
2497
# Create all client objects
3203
for client_name, client in clients_data.items():
2498
for client_name, client in clients_data.iteritems():
3204
2499
tcp_server.clients[client_name] = client_class(
3205
name = client_name,
3206
settings = client,
3207
server_settings = server_settings)
2500
name = client_name, settings = client)
3208
2501
3209
2502
if not tcp_server.clients:
3210
2503
logger.warning("No clients defined")
3211
2504
3212
2505
if not foreground:
3213
2506
if pidfile is not None:
3214
pid = os.getpid()
3215
2507
try:
3216
2508
with pidfile:
3217
print(pid, file=pidfile)
2509
pid = os.getpid()
2510
pidfile.write(str(pid) + "\n".encode("utf-8"))
3218
2511
except IOError:
3219
2512
logger.error("Could not write to file %r with PID %d",
3220
2513
pidfilename, pid)
3221
2514
del pidfile
3222
2515
del pidfilename
3223
2516
3224
for termsig in (signal.SIGHUP, signal.SIGTERM):
3225
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3226
lambda: main_loop.quit() and False)
2517
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2518
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
3227
2519
3228
2520
if use_dbus:
3229
3230
@alternate_dbus_interfaces(
3231
{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
3232
class MandosDBusService(DBusObjectWithObjectManager):
2521
@alternate_dbus_interfaces({"se.recompile.Mandos":
2522
"se.bsnet.fukt.Mandos"})
2523
class MandosDBusService(DBusObjectWithProperties):
3233
2524
"""A D-Bus proxy object"""
3234
3235
2525
def __init__(self):
3236
2526
dbus.service.Object.__init__(self, bus, "/")
3237
3238
2527
_interface = "se.recompile.Mandos"
3239
2528
2529
@dbus_interface_annotations(_interface)
2530
def _foo(self):
2531
return { "org.freedesktop.DBus.Property"
2532
".EmitsChangedSignal":
2533
"false"}
2534
3240
2535
@dbus.service.signal(_interface, signature="o")
3241
2536
def ClientAdded(self, objpath):
3242
2537
"D-Bus signal"
3247
2542
"D-Bus signal"
3248
2543
pass
3249
2544
3250
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3251
"true"})
3252
2545
@dbus.service.signal(_interface, signature="os")
3253
2546
def ClientRemoved(self, objpath, name):
3254
2547
"D-Bus signal"
3255
2548
pass
3256
2549
3257
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3258
"true"})
3259
2550
@dbus.service.method(_interface, out_signature="ao")
3260
2551
def GetAllClients(self):
3261
2552
"D-Bus method"
3262
return dbus.Array(c.dbus_object_path for c in
3263
tcp_server.clients.values())
2553
return dbus.Array(c.dbus_object_path
2554
for c in
2555
tcp_server.clients.itervalues())
3264
2556
3265
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3266
"true"})
3267
2557
@dbus.service.method(_interface,
3268
2558
out_signature="a{oa{sv}}")
3269
2559
def GetAllClientsWithProperties(self):
3270
2560
"D-Bus method"
3271
2561
return dbus.Dictionary(
3272
{ c.dbus_object_path: c.GetAll(
3273
"se.recompile.Mandos.Client")
3274
for c in tcp_server.clients.values() },
2562
((c.dbus_object_path, c.GetAll(""))
2563
for c in tcp_server.clients.itervalues()),
3275
2564
signature="oa{sv}")
3276
2565
3277
2566
@dbus.service.method(_interface, in_signature="o")
3278
2567
def RemoveClient(self, object_path):
3279
2568
"D-Bus method"
3280
for c in tcp_server.clients.values():
2569
for c in tcp_server.clients.itervalues():
3281
2570
if c.dbus_object_path == object_path:
3282
2571
del tcp_server.clients[c.name]
3283
2572
c.remove_from_connection()
3284
# Don't signal the disabling
2573
# Don't signal anything except ClientRemoved
3285
2574
c.disable(quiet=True)
3286
# Emit D-Bus signal for removal
3287
self.client_removed_signal(c)
2575
# Emit D-Bus signal
2576
self.ClientRemoved(object_path, c.name)
3288
2577
return
3289
2578
raise KeyError(object_path)
3290
2579
3291
2580
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)
3328
2581
3329
2582
mandos_dbus_service = MandosDBusService()
3330
2583
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
3335
2584
def cleanup():
3336
2585
"Cleanup function; run on exit"
3337
if zeroconf:
3338
service.cleanup()
2586
service.cleanup()
3339
2587
3340
mp.active_children()
3341
wn.close()
2588
multiprocessing.active_children()
3342
2589
if not (tcp_server.clients or client_settings):
3343
2590
return
3344
2591
3347
2594
# removed/edited, old secret will thus be unrecovable.
3348
2595
clients = {}
3349
2596
with PGPEngine() as pgp:
3350
for client in tcp_server.clients.values():
2597
for client in tcp_server.clients.itervalues():
3351
2598
key = client_settings[client.name]["secret"]
3352
2599
client.encrypted_secret = pgp.encrypt(client.secret,
3353
2600
key)
3355
2602
3356
2603
# A list of attributes that can not be pickled
3357
2604
# + secret.
3358
exclude = { "bus", "changedstate", "secret",
3359
"checker", "server_settings" }
3360
for name, typ in inspect.getmembers(dbus.service
3361
.Object):
2605
exclude = set(("bus", "changedstate", "secret",
2606
"checker"))
2607
for name, typ in (inspect.getmembers
2608
(dbus.service.Object)):
3362
2609
exclude.add(name)
3363
2610
3364
2611
client_dict["encrypted_secret"] = (client
3371
2618
del client_settings[client.name]["secret"]
3372
2619
3373
2620
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
2621
with (tempfile.NamedTemporaryFile
2622
(mode='wb', suffix=".pickle", prefix='clients-',
2623
dir=os.path.dirname(stored_state_path),
2624
delete=False)) as stored_state:
2625
pickle.dump((clients, client_settings), stored_state)
2626
tempname=stored_state.name
3383
2627
os.rename(tempname, stored_state_path)
3384
2628
except (IOError, OSError) as e:
3385
2629
if not debug:
3388
2632
except NameError:
3389
2633
pass
3390
2634
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3391
logger.warning("Could not save persistent state: {}"
2635
logger.warning("Could not save persistent state: {0}"
3392
2636
.format(os.strerror(e.errno)))
3393
2637
else:
3394
2638
logger.warning("Could not save persistent state:",
3395
2639
exc_info=e)
3396
raise
2640
raise e
3397
2641
3398
2642
# Delete all clients, and settings from config
3399
2643
while tcp_server.clients:
3400
2644
name, client = tcp_server.clients.popitem()
3401
2645
if use_dbus:
3402
2646
client.remove_from_connection()
3403
# Don't signal the disabling
2647
# Don't signal anything except ClientRemoved
3404
2648
client.disable(quiet=True)
3405
# Emit D-Bus signal for removal
3406
2649
if use_dbus:
3407
mandos_dbus_service.client_removed_signal(client)
2650
# Emit D-Bus signal
2651
mandos_dbus_service.ClientRemoved(client
2652
.dbus_object_path,
2653
client.name)
3408
2654
client_settings.clear()
3409
2655
3410
2656
atexit.register(cleanup)
3411
2657
3412
for client in tcp_server.clients.values():
2658
for client in tcp_server.clients.itervalues():
3413
2659
if use_dbus:
3414
# Emit D-Bus signal for adding
3415
mandos_dbus_service.client_added_signal(client)
2660
# Emit D-Bus signal
2661
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3416
2662
# Need to initiate checking of clients
3417
2663
if client.enabled:
3418
2664
client.init_checker()
3421
2667
tcp_server.server_activate()
3422
2668
3423
2669
# Find out what port we got
3424
if zeroconf:
3425
service.port = tcp_server.socket.getsockname()[1]
2670
service.port = tcp_server.socket.getsockname()[1]
3426
2671
if use_ipv6:
3427
2672
logger.info("Now listening on address %r, port %d,"
3428
2673
" flowinfo %d, scope_id %d",
3434
2679
#service.interface = tcp_server.socket.getsockname()[3]
3435
2680
3436
2681
try:
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
2682
# From the Avahi example code
2683
try:
2684
service.activate()
2685
except dbus.exceptions.DBusException as error:
2686
logger.critical("D-Bus Exception", exc_info=error)
2687
cleanup()
2688
sys.exit(1)
2689
# End of Avahi example code
3446
2690
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))
2691
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2692
lambda *args, **kwargs:
2693
(tcp_server.handle_request
2694
(*args[2:], **kwargs) or True))
3451
2695
3452
2696
logger.debug("Starting main loop")
3453
2697
main_loop.run()
3463
2707
# Must run before the D-Bus bus name gets deregistered
3464
2708
cleanup()
3465
2709
3466
3467
2710
if __name__ == '__main__':
3468
2711
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0