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- Committer: Teddy Hogeborn
- Date: 2016-03-17 20:40:55 UTC
- Revision ID: teddy@recompile.se-20160317204055-bhsh5xsidq7w5cxu
Client: Fix plymouth agent; broken since 1.7.2.
Fix an very old memory bug in the plymouth agent (which has been
present since its apperance in version 1.2), but which was only
recently detected at run time due to the new -fsanitize=address
compile- time flag, which has been used since version 1.7.2. This
detection of a memory access violation causes the program to abort,
making the Plymouth graphical boot system unable to accept interactive
input of passwords when using the Mandos client.
* plugins.d/plymouth.c (exec_and_wait): Fix memory allocation bug when
allocating new_argv. Also tolerate a zero-length argv.
Fix an very old memory bug in the plymouth agent (which has been
present since its apperance in version 1.2), but which was only
recently detected at run time due to the new -fsanitize=address
compile- time flag, which has been used since version 1.7.2. This
detection of a memory access violation causes the program to abort,
making the Plymouth graphical boot system unable to accept interactive
input of passwords when using the Mandos client.
* plugins.d/plymouth.c (exec_and_wait): Fix memory allocation bug when
allocating new_argv. Also tolerate a zero-length argv.
- files added:
- bugs.xml
- debian/upstream
- plugin-helpers
- files modified:
- .bzrignore
added
removed
mandos
11
11
# "AvahiService" class, and some lines in "main".
12
12
#
13
13
# Everything else is
14
# Copyright © 2008-2011 Teddy Hogeborn
15
# Copyright © 2008-2011 Björn Påhlsson
14
# Copyright © 2008-2016 Teddy Hogeborn
15
# Copyright © 2008-2016 Björn Påhlsson
16
16
#
17
17
# This program is free software: you can redistribute it and/or modify
18
18
# it under the terms of the GNU General Public License as published by
34
34
from __future__ import (division, absolute_import, print_function,
35
35
unicode_literals)
36
36
37
import SocketServer as socketserver
37
try:
38
from future_builtins import *
39
except ImportError:
40
pass
41
42
try:
43
import SocketServer as socketserver
44
except ImportError:
45
import socketserver
38
46
import socket
39
47
import argparse
40
48
import datetime
41
49
import errno
42
import gnutls.crypto
43
import gnutls.connection
44
import gnutls.errors
45
import gnutls.library.functions
46
import gnutls.library.constants
47
import gnutls.library.types
48
import ConfigParser as configparser
50
try:
51
import ConfigParser as configparser
52
except ImportError:
53
import configparser
49
54
import sys
50
55
import re
51
56
import os
60
65
import struct
61
66
import fcntl
62
67
import functools
63
import cPickle as pickle
68
try:
69
import cPickle as pickle
70
except ImportError:
71
import pickle
64
72
import multiprocessing
65
73
import types
66
74
import binascii
67
75
import tempfile
76
import itertools
77
import collections
78
import codecs
68
79
69
80
import dbus
70
81
import dbus.service
71
import gobject
72
import avahi
82
from gi.repository import GLib
73
83
from dbus.mainloop.glib import DBusGMainLoop
74
84
import ctypes
75
85
import ctypes.util
76
86
import xml.dom.minidom
77
87
import inspect
78
import GnuPGInterface
79
88
80
89
try:
81
90
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
85
94
except ImportError:
86
95
SO_BINDTODEVICE = None
87
96
88
version = "1.4.1"
97
if sys.version_info.major == 2:
98
str = unicode
99
100
version = "1.7.6"
89
101
stored_state_file = "clients.pickle"
90
102
91
103
logger = logging.getLogger()
92
syslogger = (logging.handlers.SysLogHandler
93
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
94
address = str("/dev/log")))
104
syslogger = None
95
105
96
106
try:
97
if_nametoindex = (ctypes.cdll.LoadLibrary
98
(ctypes.util.find_library("c"))
99
.if_nametoindex)
107
if_nametoindex = ctypes.cdll.LoadLibrary(
108
ctypes.util.find_library("c")).if_nametoindex
100
109
except (OSError, AttributeError):
110
101
111
def if_nametoindex(interface):
102
112
"Get an interface index the hard way, i.e. using fcntl()"
103
113
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
104
114
with contextlib.closing(socket.socket()) as s:
105
115
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
106
struct.pack(str("16s16x"),
107
interface))
108
interface_index = struct.unpack(str("I"),
109
ifreq[16:20])[0]
116
struct.pack(b"16s16x", interface))
117
interface_index = struct.unpack("I", ifreq[16:20])[0]
110
118
return interface_index
111
119
112
120
121
def copy_function(func):
122
"""Make a copy of a function"""
123
if sys.version_info.major == 2:
124
return types.FunctionType(func.func_code,
125
func.func_globals,
126
func.func_name,
127
func.func_defaults,
128
func.func_closure)
129
else:
130
return types.FunctionType(func.__code__,
131
func.__globals__,
132
func.__name__,
133
func.__defaults__,
134
func.__closure__)
135
136
113
137
def initlogger(debug, level=logging.WARNING):
114
138
"""init logger and add loglevel"""
115
139
140
global syslogger
141
syslogger = (logging.handlers.SysLogHandler(
142
facility = logging.handlers.SysLogHandler.LOG_DAEMON,
143
address = "/dev/log"))
116
144
syslogger.setFormatter(logging.Formatter
117
145
('Mandos [%(process)d]: %(levelname)s:'
118
146
' %(message)s'))
135
163
136
164
class PGPEngine(object):
137
165
"""A simple class for OpenPGP symmetric encryption & decryption"""
166
138
167
def __init__(self):
139
self.gnupg = GnuPGInterface.GnuPG()
140
168
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
141
self.gnupg = GnuPGInterface.GnuPG()
142
self.gnupg.options.meta_interactive = False
143
self.gnupg.options.homedir = self.tempdir
144
self.gnupg.options.extra_args.extend(['--force-mdc',
145
'--quiet'])
169
self.gpg = "gpg"
170
try:
171
output = subprocess.check_output(["gpgconf"])
172
for line in output.splitlines():
173
name, text, path = line.split(b":")
174
if name == "gpg":
175
self.gpg = path
176
break
177
except OSError as e:
178
if e.errno != errno.ENOENT:
179
raise
180
self.gnupgargs = ['--batch',
181
'--homedir', self.tempdir,
182
'--force-mdc',
183
'--quiet',
184
'--no-use-agent']
146
185
147
186
def __enter__(self):
148
187
return self
149
188
150
def __exit__ (self, exc_type, exc_value, traceback):
189
def __exit__(self, exc_type, exc_value, traceback):
151
190
self._cleanup()
152
191
return False
153
192
170
209
def password_encode(self, password):
171
210
# Passphrase can not be empty and can not contain newlines or
172
211
# NUL bytes. So we prefix it and hex encode it.
173
return b"mandos" + binascii.hexlify(password)
212
encoded = b"mandos" + binascii.hexlify(password)
213
if len(encoded) > 2048:
214
# GnuPG can't handle long passwords, so encode differently
215
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
216
.replace(b"\n", b"\\n")
217
.replace(b"\0", b"\\x00"))
218
return encoded
174
219
175
220
def encrypt(self, data, password):
176
self.gnupg.passphrase = self.password_encode(password)
177
with open(os.devnull) as devnull:
178
try:
179
proc = self.gnupg.run(['--symmetric'],
180
create_fhs=['stdin', 'stdout'],
181
attach_fhs={'stderr': devnull})
182
with contextlib.closing(proc.handles['stdin']) as f:
183
f.write(data)
184
with contextlib.closing(proc.handles['stdout']) as f:
185
ciphertext = f.read()
186
proc.wait()
187
except IOError as e:
188
raise PGPError(e)
189
self.gnupg.passphrase = None
221
passphrase = self.password_encode(password)
222
with tempfile.NamedTemporaryFile(
223
dir=self.tempdir) as passfile:
224
passfile.write(passphrase)
225
passfile.flush()
226
proc = subprocess.Popen([self.gpg, '--symmetric',
227
'--passphrase-file',
228
passfile.name]
229
+ self.gnupgargs,
230
stdin = subprocess.PIPE,
231
stdout = subprocess.PIPE,
232
stderr = subprocess.PIPE)
233
ciphertext, err = proc.communicate(input = data)
234
if proc.returncode != 0:
235
raise PGPError(err)
190
236
return ciphertext
191
237
192
238
def decrypt(self, data, password):
193
self.gnupg.passphrase = self.password_encode(password)
194
with open(os.devnull) as devnull:
195
try:
196
proc = self.gnupg.run(['--decrypt'],
197
create_fhs=['stdin', 'stdout'],
198
attach_fhs={'stderr': devnull})
199
with contextlib.closing(proc.handles['stdin'] ) as f:
200
f.write(data)
201
with contextlib.closing(proc.handles['stdout']) as f:
202
decrypted_plaintext = f.read()
203
proc.wait()
204
except IOError as e:
205
raise PGPError(e)
206
self.gnupg.passphrase = None
239
passphrase = self.password_encode(password)
240
with tempfile.NamedTemporaryFile(
241
dir = self.tempdir) as passfile:
242
passfile.write(passphrase)
243
passfile.flush()
244
proc = subprocess.Popen([self.gpg, '--decrypt',
245
'--passphrase-file',
246
passfile.name]
247
+ self.gnupgargs,
248
stdin = subprocess.PIPE,
249
stdout = subprocess.PIPE,
250
stderr = subprocess.PIPE)
251
decrypted_plaintext, err = proc.communicate(input = data)
252
if proc.returncode != 0:
253
raise PGPError(err)
207
254
return decrypted_plaintext
208
255
209
256
# Pretend that we have an Avahi module
257
class Avahi(object):
258
"""This isn't so much a class as it is a module-like namespace.
259
It is instantiated once, and simulates having an Avahi module."""
260
IF_UNSPEC = -1 # avahi-common/address.h
261
PROTO_UNSPEC = -1 # avahi-common/address.h
262
PROTO_INET = 0 # avahi-common/address.h
263
PROTO_INET6 = 1 # avahi-common/address.h
264
DBUS_NAME = "org.freedesktop.Avahi"
265
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
266
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
267
DBUS_PATH_SERVER = "/"
268
def string_array_to_txt_array(self, t):
269
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
270
for s in t), signature="ay")
271
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
272
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
273
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
274
SERVER_INVALID = 0 # avahi-common/defs.h
275
SERVER_REGISTERING = 1 # avahi-common/defs.h
276
SERVER_RUNNING = 2 # avahi-common/defs.h
277
SERVER_COLLISION = 3 # avahi-common/defs.h
278
SERVER_FAILURE = 4 # avahi-common/defs.h
279
avahi = Avahi()
210
280
211
281
class AvahiError(Exception):
212
282
def __init__(self, value, *args, **kwargs):
213
283
self.value = value
214
super(AvahiError, self).__init__(value, *args, **kwargs)
215
def __unicode__(self):
216
return unicode(repr(self.value))
284
return super(AvahiError, self).__init__(value, *args,
285
**kwargs)
286
217
287
218
288
class AvahiServiceError(AvahiError):
219
289
pass
220
290
291
221
292
class AvahiGroupError(AvahiError):
222
293
pass
223
294
230
301
Used to optionally bind to the specified interface.
231
302
name: string; Example: 'Mandos'
232
303
type: string; Example: '_mandos._tcp'.
233
See <http://www.dns-sd.org/ServiceTypes.html>
304
See <https://www.iana.org/assignments/service-names-port-numbers>
234
305
port: integer; what port to announce
235
306
TXT: list of strings; TXT record for the service
236
307
domain: string; Domain to publish on, default to .local if empty.
242
313
server: D-Bus Server
243
314
bus: dbus.SystemBus()
244
315
"""
245
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
246
servicetype = None, port = None, TXT = None,
247
domain = "", host = "", max_renames = 32768,
248
protocol = avahi.PROTO_UNSPEC, bus = None):
316
317
def __init__(self,
318
interface = avahi.IF_UNSPEC,
319
name = None,
320
servicetype = None,
321
port = None,
322
TXT = None,
323
domain = "",
324
host = "",
325
max_renames = 32768,
326
protocol = avahi.PROTO_UNSPEC,
327
bus = None):
249
328
self.interface = interface
250
329
self.name = name
251
330
self.type = servicetype
260
339
self.server = None
261
340
self.bus = bus
262
341
self.entry_group_state_changed_match = None
263
def rename(self):
342
343
def rename(self, remove=True):
264
344
"""Derived from the Avahi example code"""
265
345
if self.rename_count >= self.max_renames:
266
346
logger.critical("No suitable Zeroconf service name found"
267
347
" after %i retries, exiting.",
268
348
self.rename_count)
269
349
raise AvahiServiceError("Too many renames")
270
self.name = unicode(self.server
271
.GetAlternativeServiceName(self.name))
350
self.name = str(
351
self.server.GetAlternativeServiceName(self.name))
352
self.rename_count += 1
272
353
logger.info("Changing Zeroconf service name to %r ...",
273
354
self.name)
274
self.remove()
355
if remove:
356
self.remove()
275
357
try:
276
358
self.add()
277
359
except dbus.exceptions.DBusException as error:
278
logger.critical("DBusException: %s", error)
279
self.cleanup()
280
os._exit(1)
281
self.rename_count += 1
360
if (error.get_dbus_name()
361
== "org.freedesktop.Avahi.CollisionError"):
362
logger.info("Local Zeroconf service name collision.")
363
return self.rename(remove=False)
364
else:
365
logger.critical("D-Bus Exception", exc_info=error)
366
self.cleanup()
367
os._exit(1)
368
282
369
def remove(self):
283
370
"""Derived from the Avahi example code"""
284
371
if self.entry_group_state_changed_match is not None:
286
373
self.entry_group_state_changed_match = None
287
374
if self.group is not None:
288
375
self.group.Reset()
376
289
377
def add(self):
290
378
"""Derived from the Avahi example code"""
291
379
self.remove()
308
396
dbus.UInt16(self.port),
309
397
avahi.string_array_to_txt_array(self.TXT))
310
398
self.group.Commit()
399
311
400
def entry_group_state_changed(self, state, error):
312
401
"""Derived from the Avahi example code"""
313
402
logger.debug("Avahi entry group state change: %i", state)
319
408
self.rename()
320
409
elif state == avahi.ENTRY_GROUP_FAILURE:
321
410
logger.critical("Avahi: Error in group state changed %s",
322
unicode(error))
323
raise AvahiGroupError("State changed: %s"
324
% unicode(error))
411
str(error))
412
raise AvahiGroupError("State changed: {!s}".format(error))
413
325
414
def cleanup(self):
326
415
"""Derived from the Avahi example code"""
327
416
if self.group is not None:
332
421
pass
333
422
self.group = None
334
423
self.remove()
424
335
425
def server_state_changed(self, state, error=None):
336
426
"""Derived from the Avahi example code"""
337
427
logger.debug("Avahi server state change: %i", state)
338
bad_states = { avahi.SERVER_INVALID:
339
"Zeroconf server invalid",
340
avahi.SERVER_REGISTERING: None,
341
avahi.SERVER_COLLISION:
342
"Zeroconf server name collision",
343
avahi.SERVER_FAILURE:
344
"Zeroconf server failure" }
428
bad_states = {
429
avahi.SERVER_INVALID: "Zeroconf server invalid",
430
avahi.SERVER_REGISTERING: None,
431
avahi.SERVER_COLLISION: "Zeroconf server name collision",
432
avahi.SERVER_FAILURE: "Zeroconf server failure",
433
}
345
434
if state in bad_states:
346
435
if bad_states[state] is not None:
347
436
if error is None:
350
439
logger.error(bad_states[state] + ": %r", error)
351
440
self.cleanup()
352
441
elif state == avahi.SERVER_RUNNING:
353
self.add()
442
try:
443
self.add()
444
except dbus.exceptions.DBusException as error:
445
if (error.get_dbus_name()
446
== "org.freedesktop.Avahi.CollisionError"):
447
logger.info("Local Zeroconf service name"
448
" collision.")
449
return self.rename(remove=False)
450
else:
451
logger.critical("D-Bus Exception", exc_info=error)
452
self.cleanup()
453
os._exit(1)
354
454
else:
355
455
if error is None:
356
456
logger.debug("Unknown state: %r", state)
357
457
else:
358
458
logger.debug("Unknown state: %r: %r", state, error)
459
359
460
def activate(self):
360
461
"""Derived from the Avahi example code"""
361
462
if self.server is None:
365
466
follow_name_owner_changes=True),
366
467
avahi.DBUS_INTERFACE_SERVER)
367
468
self.server.connect_to_signal("StateChanged",
368
self.server_state_changed)
469
self.server_state_changed)
369
470
self.server_state_changed(self.server.GetState())
370
471
472
371
473
class AvahiServiceToSyslog(AvahiService):
372
def rename(self):
474
def rename(self, *args, **kwargs):
373
475
"""Add the new name to the syslog messages"""
374
ret = AvahiService.rename(self)
375
syslogger.setFormatter(logging.Formatter
376
('Mandos (%s) [%%(process)d]:'
377
' %%(levelname)s: %%(message)s'
378
% self.name))
476
ret = AvahiService.rename(self, *args, **kwargs)
477
syslogger.setFormatter(logging.Formatter(
478
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
479
.format(self.name)))
379
480
return ret
380
481
381
def timedelta_to_milliseconds(td):
382
"Convert a datetime.timedelta() to milliseconds"
383
return ((td.days * 24 * 60 * 60 * 1000)
384
+ (td.seconds * 1000)
385
+ (td.microseconds // 1000))
386
482
# Pretend that we have a GnuTLS module
483
class GnuTLS(object):
484
"""This isn't so much a class as it is a module-like namespace.
485
It is instantiated once, and simulates having a GnuTLS module."""
486
487
_library = ctypes.cdll.LoadLibrary(
488
ctypes.util.find_library("gnutls"))
489
_need_version = b"3.3.0"
490
def __init__(self):
491
# Need to use class name "GnuTLS" here, since this method is
492
# called before the assignment to the "gnutls" global variable
493
# happens.
494
if GnuTLS.check_version(self._need_version) is None:
495
raise GnuTLS.Error("Needs GnuTLS {} or later"
496
.format(self._need_version))
497
498
# Unless otherwise indicated, the constants and types below are
499
# all from the gnutls/gnutls.h C header file.
500
501
# Constants
502
E_SUCCESS = 0
503
E_INTERRUPTED = -52
504
E_AGAIN = -28
505
CRT_OPENPGP = 2
506
CLIENT = 2
507
SHUT_RDWR = 0
508
CRD_CERTIFICATE = 1
509
E_NO_CERTIFICATE_FOUND = -49
510
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
511
512
# Types
513
class session_int(ctypes.Structure):
514
_fields_ = []
515
session_t = ctypes.POINTER(session_int)
516
class certificate_credentials_st(ctypes.Structure):
517
_fields_ = []
518
certificate_credentials_t = ctypes.POINTER(
519
certificate_credentials_st)
520
certificate_type_t = ctypes.c_int
521
class datum_t(ctypes.Structure):
522
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
523
('size', ctypes.c_uint)]
524
class openpgp_crt_int(ctypes.Structure):
525
_fields_ = []
526
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
527
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
528
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
529
credentials_type_t = ctypes.c_int
530
transport_ptr_t = ctypes.c_void_p
531
close_request_t = ctypes.c_int
532
533
# Exceptions
534
class Error(Exception):
535
# We need to use the class name "GnuTLS" here, since this
536
# exception might be raised from within GnuTLS.__init__,
537
# which is called before the assignment to the "gnutls"
538
# global variable has happened.
539
def __init__(self, message = None, code = None, args=()):
540
# Default usage is by a message string, but if a return
541
# code is passed, convert it to a string with
542
# gnutls.strerror()
543
self.code = code
544
if message is None and code is not None:
545
message = GnuTLS.strerror(code)
546
return super(GnuTLS.Error, self).__init__(
547
message, *args)
548
549
class CertificateSecurityError(Error):
550
pass
551
552
# Classes
553
class Credentials(object):
554
def __init__(self):
555
self._c_object = gnutls.certificate_credentials_t()
556
gnutls.certificate_allocate_credentials(
557
ctypes.byref(self._c_object))
558
self.type = gnutls.CRD_CERTIFICATE
559
560
def __del__(self):
561
gnutls.certificate_free_credentials(self._c_object)
562
563
class ClientSession(object):
564
def __init__(self, socket, credentials = None):
565
self._c_object = gnutls.session_t()
566
gnutls.init(ctypes.byref(self._c_object), gnutls.CLIENT)
567
gnutls.set_default_priority(self._c_object)
568
gnutls.transport_set_ptr(self._c_object, socket.fileno())
569
gnutls.handshake_set_private_extensions(self._c_object,
570
True)
571
self.socket = socket
572
if credentials is None:
573
credentials = gnutls.Credentials()
574
gnutls.credentials_set(self._c_object, credentials.type,
575
ctypes.cast(credentials._c_object,
576
ctypes.c_void_p))
577
self.credentials = credentials
578
579
def __del__(self):
580
gnutls.deinit(self._c_object)
581
582
def handshake(self):
583
return gnutls.handshake(self._c_object)
584
585
def send(self, data):
586
data = bytes(data)
587
data_len = len(data)
588
while data_len > 0:
589
data_len -= gnutls.record_send(self._c_object,
590
data[-data_len:],
591
data_len)
592
593
def bye(self):
594
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
595
596
# Error handling functions
597
def _error_code(result):
598
"""A function to raise exceptions on errors, suitable
599
for the 'restype' attribute on ctypes functions"""
600
if result >= 0:
601
return result
602
if result == gnutls.E_NO_CERTIFICATE_FOUND:
603
raise gnutls.CertificateSecurityError(code = result)
604
raise gnutls.Error(code = result)
605
606
def _retry_on_error(result, func, arguments):
607
"""A function to retry on some errors, suitable
608
for the 'errcheck' attribute on ctypes functions"""
609
while result < 0:
610
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
611
return _error_code(result)
612
result = func(*arguments)
613
return result
614
615
# Unless otherwise indicated, the function declarations below are
616
# all from the gnutls/gnutls.h C header file.
617
618
# Functions
619
priority_set_direct = _library.gnutls_priority_set_direct
620
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
621
ctypes.POINTER(ctypes.c_char_p)]
622
priority_set_direct.restype = _error_code
623
624
init = _library.gnutls_init
625
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
626
init.restype = _error_code
627
628
set_default_priority = _library.gnutls_set_default_priority
629
set_default_priority.argtypes = [session_t]
630
set_default_priority.restype = _error_code
631
632
record_send = _library.gnutls_record_send
633
record_send.argtypes = [session_t, ctypes.c_void_p,
634
ctypes.c_size_t]
635
record_send.restype = ctypes.c_ssize_t
636
record_send.errcheck = _retry_on_error
637
638
certificate_allocate_credentials = (
639
_library.gnutls_certificate_allocate_credentials)
640
certificate_allocate_credentials.argtypes = [
641
ctypes.POINTER(certificate_credentials_t)]
642
certificate_allocate_credentials.restype = _error_code
643
644
certificate_free_credentials = (
645
_library.gnutls_certificate_free_credentials)
646
certificate_free_credentials.argtypes = [certificate_credentials_t]
647
certificate_free_credentials.restype = None
648
649
handshake_set_private_extensions = (
650
_library.gnutls_handshake_set_private_extensions)
651
handshake_set_private_extensions.argtypes = [session_t,
652
ctypes.c_int]
653
handshake_set_private_extensions.restype = None
654
655
credentials_set = _library.gnutls_credentials_set
656
credentials_set.argtypes = [session_t, credentials_type_t,
657
ctypes.c_void_p]
658
credentials_set.restype = _error_code
659
660
strerror = _library.gnutls_strerror
661
strerror.argtypes = [ctypes.c_int]
662
strerror.restype = ctypes.c_char_p
663
664
certificate_type_get = _library.gnutls_certificate_type_get
665
certificate_type_get.argtypes = [session_t]
666
certificate_type_get.restype = _error_code
667
668
certificate_get_peers = _library.gnutls_certificate_get_peers
669
certificate_get_peers.argtypes = [session_t,
670
ctypes.POINTER(ctypes.c_uint)]
671
certificate_get_peers.restype = ctypes.POINTER(datum_t)
672
673
global_set_log_level = _library.gnutls_global_set_log_level
674
global_set_log_level.argtypes = [ctypes.c_int]
675
global_set_log_level.restype = None
676
677
global_set_log_function = _library.gnutls_global_set_log_function
678
global_set_log_function.argtypes = [log_func]
679
global_set_log_function.restype = None
680
681
deinit = _library.gnutls_deinit
682
deinit.argtypes = [session_t]
683
deinit.restype = None
684
685
handshake = _library.gnutls_handshake
686
handshake.argtypes = [session_t]
687
handshake.restype = _error_code
688
handshake.errcheck = _retry_on_error
689
690
transport_set_ptr = _library.gnutls_transport_set_ptr
691
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
692
transport_set_ptr.restype = None
693
694
bye = _library.gnutls_bye
695
bye.argtypes = [session_t, close_request_t]
696
bye.restype = _error_code
697
bye.errcheck = _retry_on_error
698
699
check_version = _library.gnutls_check_version
700
check_version.argtypes = [ctypes.c_char_p]
701
check_version.restype = ctypes.c_char_p
702
703
# All the function declarations below are from gnutls/openpgp.h
704
705
openpgp_crt_init = _library.gnutls_openpgp_crt_init
706
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
707
openpgp_crt_init.restype = _error_code
708
709
openpgp_crt_import = _library.gnutls_openpgp_crt_import
710
openpgp_crt_import.argtypes = [openpgp_crt_t,
711
ctypes.POINTER(datum_t),
712
openpgp_crt_fmt_t]
713
openpgp_crt_import.restype = _error_code
714
715
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
716
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
717
ctypes.POINTER(ctypes.c_uint)]
718
openpgp_crt_verify_self.restype = _error_code
719
720
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
721
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
722
openpgp_crt_deinit.restype = None
723
724
openpgp_crt_get_fingerprint = (
725
_library.gnutls_openpgp_crt_get_fingerprint)
726
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
727
ctypes.c_void_p,
728
ctypes.POINTER(
729
ctypes.c_size_t)]
730
openpgp_crt_get_fingerprint.restype = _error_code
731
732
# Remove non-public functions
733
del _error_code, _retry_on_error
734
# Create the global "gnutls" object, simulating a module
735
gnutls = GnuTLS()
736
737
def call_pipe(connection, # : multiprocessing.Connection
738
func, *args, **kwargs):
739
"""This function is meant to be called by multiprocessing.Process
740
741
This function runs func(*args, **kwargs), and writes the resulting
742
return value on the provided multiprocessing.Connection.
743
"""
744
connection.send(func(*args, **kwargs))
745
connection.close()
746
387
747
class Client(object):
388
748
"""A representation of a client host served by this server.
389
749
394
754
checker: subprocess.Popen(); a running checker process used
395
755
to see if the client lives.
396
756
'None' if no process is running.
397
checker_callback_tag: a gobject event source tag, or None
757
checker_callback_tag: a GLib event source tag, or None
398
758
checker_command: string; External command which is run to check
399
759
if client lives. %() expansions are done at
400
760
runtime with vars(self) as dict, so that for
401
761
instance %(name)s can be used in the command.
402
checker_initiator_tag: a gobject event source tag, or None
762
checker_initiator_tag: a GLib event source tag, or None
403
763
created: datetime.datetime(); (UTC) object creation
404
764
client_structure: Object describing what attributes a client has
405
765
and is used for storing the client at exit
406
766
current_checker_command: string; current running checker_command
407
disable_initiator_tag: a gobject event source tag, or None
767
disable_initiator_tag: a GLib event source tag, or None
408
768
enabled: bool()
409
769
fingerprint: string (40 or 32 hexadecimal digits); used to
410
770
uniquely identify the client
414
774
last_checked_ok: datetime.datetime(); (UTC) or None
415
775
last_checker_status: integer between 0 and 255 reflecting exit
416
776
status of last checker. -1 reflects crashed
417
checker, or None.
777
checker, -2 means no checker completed yet.
778
last_checker_signal: The signal which killed the last checker, if
779
last_checker_status is -1
418
780
last_enabled: datetime.datetime(); (UTC) or None
419
781
name: string; from the config file, used in log messages and
420
782
D-Bus identifiers
421
783
secret: bytestring; sent verbatim (over TLS) to client
422
784
timeout: datetime.timedelta(); How long from last_checked_ok
423
785
until this client is disabled
424
extended_timeout: extra long timeout when password has been sent
786
extended_timeout: extra long timeout when secret has been sent
425
787
runtime_expansions: Allowed attributes for runtime expansion.
426
788
expires: datetime.datetime(); time (UTC) when a client will be
427
789
disabled, or None
790
server_settings: The server_settings dict from main()
428
791
"""
429
792
430
793
runtime_expansions = ("approval_delay", "approval_duration",
431
"created", "enabled", "fingerprint",
432
"host", "interval", "last_checked_ok",
794
"created", "enabled", "expires",
795
"fingerprint", "host", "interval",
796
"last_approval_request", "last_checked_ok",
433
797
"last_enabled", "name", "timeout")
434
client_defaults = { "timeout": "5m",
435
"extended_timeout": "15m",
436
"interval": "2m",
437
"checker": "fping -q -- %%(host)s",
438
"host": "",
439
"approval_delay": "0s",
440
"approval_duration": "1s",
441
"approved_by_default": "True",
442
"enabled": "True",
443
}
444
445
def timeout_milliseconds(self):
446
"Return the 'timeout' attribute in milliseconds"
447
return timedelta_to_milliseconds(self.timeout)
448
449
def extended_timeout_milliseconds(self):
450
"Return the 'extended_timeout' attribute in milliseconds"
451
return timedelta_to_milliseconds(self.extended_timeout)
452
453
def interval_milliseconds(self):
454
"Return the 'interval' attribute in milliseconds"
455
return timedelta_to_milliseconds(self.interval)
456
457
def approval_delay_milliseconds(self):
458
return timedelta_to_milliseconds(self.approval_delay)
459
798
client_defaults = {
799
"timeout": "PT5M",
800
"extended_timeout": "PT15M",
801
"interval": "PT2M",
802
"checker": "fping -q -- %%(host)s",
803
"host": "",
804
"approval_delay": "PT0S",
805
"approval_duration": "PT1S",
806
"approved_by_default": "True",
807
"enabled": "True",
808
}
809
460
810
@staticmethod
461
811
def config_parser(config):
462
""" Construct a new dict of client settings of this form:
812
"""Construct a new dict of client settings of this form:
463
813
{ client_name: {setting_name: value, ...}, ...}
464
with exceptions for any special settings as defined above"""
814
with exceptions for any special settings as defined above.
815
NOTE: Must be a pure function. Must return the same result
816
value given the same arguments.
817
"""
465
818
settings = {}
466
819
for client_name in config.sections():
467
820
section = dict(config.items(client_name))
471
824
# Reformat values from string types to Python types
472
825
client["approved_by_default"] = config.getboolean(
473
826
client_name, "approved_by_default")
474
client["enabled"] = config.getboolean(client_name, "enabled")
827
client["enabled"] = config.getboolean(client_name,
828
"enabled")
475
829
830
# Uppercase and remove spaces from fingerprint for later
831
# comparison purposes with return value from the
832
# fingerprint() function
476
833
client["fingerprint"] = (section["fingerprint"].upper()
477
834
.replace(" ", ""))
478
835
if "secret" in section:
479
client["secret"] = section["secret"].decode("base64")
836
client["secret"] = codecs.decode(section["secret"]
837
.encode("utf-8"),
838
"base64")
480
839
elif "secfile" in section:
481
840
with open(os.path.expanduser(os.path.expandvars
482
841
(section["secfile"])),
483
842
"rb") as secfile:
484
843
client["secret"] = secfile.read()
485
844
else:
486
raise TypeError("No secret or secfile for section %s"
487
% section)
845
raise TypeError("No secret or secfile for section {}"
846
.format(section))
488
847
client["timeout"] = string_to_delta(section["timeout"])
489
848
client["extended_timeout"] = string_to_delta(
490
849
section["extended_timeout"])
496
855
client["checker_command"] = section["checker"]
497
856
client["last_approval_request"] = None
498
857
client["last_checked_ok"] = None
499
client["last_checker_status"] = None
500
if client["enabled"]:
501
client["last_enabled"] = datetime.datetime.utcnow()
502
client["expires"] = (datetime.datetime.utcnow()
503
+ client["timeout"])
504
else:
505
client["last_enabled"] = None
506
client["expires"] = None
507
858
client["last_checker_status"] = -2
859
508
860
return settings
509
510
511
def __init__(self, settings, name = None):
512
"""Note: the 'checker' key in 'config' sets the
513
'checker_command' attribute and *not* the 'checker'
514
attribute."""
861
862
def __init__(self, settings, name = None, server_settings=None):
515
863
self.name = name
864
if server_settings is None:
865
server_settings = {}
866
self.server_settings = server_settings
516
867
# adding all client settings
517
for setting, value in settings.iteritems():
868
for setting, value in settings.items():
518
869
setattr(self, setting, value)
519
870
871
if self.enabled:
872
if not hasattr(self, "last_enabled"):
873
self.last_enabled = datetime.datetime.utcnow()
874
if not hasattr(self, "expires"):
875
self.expires = (datetime.datetime.utcnow()
876
+ self.timeout)
877
else:
878
self.last_enabled = None
879
self.expires = None
880
520
881
logger.debug("Creating client %r", self.name)
521
# Uppercase and remove spaces from fingerprint for later
522
# comparison purposes with return value from the fingerprint()
523
# function
524
882
logger.debug(" Fingerprint: %s", self.fingerprint)
525
self.created = settings.get("created", datetime.datetime.utcnow())
526
883
self.created = settings.get("created",
884
datetime.datetime.utcnow())
885
527
886
# attributes specific for this server instance
528
887
self.checker = None
529
888
self.checker_initiator_tag = None
532
891
self.current_checker_command = None
533
892
self.approved = None
534
893
self.approvals_pending = 0
535
self.changedstate = (multiprocessing_manager
536
.Condition(multiprocessing_manager
537
.Lock()))
538
self.client_structure = [attr for attr in
539
self.__dict__.iterkeys()
894
self.changedstate = multiprocessing_manager.Condition(
895
multiprocessing_manager.Lock())
896
self.client_structure = [attr
897
for attr in self.__dict__.keys()
540
898
if not attr.startswith("_")]
541
899
self.client_structure.append("client_structure")
542
900
543
for name, t in inspect.getmembers(type(self),
544
lambda obj:
545
isinstance(obj,
546
property)):
901
for name, t in inspect.getmembers(
902
type(self), lambda obj: isinstance(obj, property)):
547
903
if not name.startswith("_"):
548
904
self.client_structure.append(name)
549
905
557
913
if getattr(self, "enabled", False):
558
914
# Already enabled
559
915
return
560
self.send_changedstate()
561
916
self.expires = datetime.datetime.utcnow() + self.timeout
562
917
self.enabled = True
563
918
self.last_enabled = datetime.datetime.utcnow()
564
919
self.init_checker()
920
self.send_changedstate()
565
921
566
922
def disable(self, quiet=True):
567
923
"""Disable this client."""
568
924
if not getattr(self, "enabled", False):
569
925
return False
570
926
if not quiet:
571
self.send_changedstate()
572
if not quiet:
573
927
logger.info("Disabling client %s", self.name)
574
if getattr(self, "disable_initiator_tag", False):
575
gobject.source_remove(self.disable_initiator_tag)
928
if getattr(self, "disable_initiator_tag", None) is not None:
929
GLib.source_remove(self.disable_initiator_tag)
576
930
self.disable_initiator_tag = None
577
931
self.expires = None
578
if getattr(self, "checker_initiator_tag", False):
579
gobject.source_remove(self.checker_initiator_tag)
932
if getattr(self, "checker_initiator_tag", None) is not None:
933
GLib.source_remove(self.checker_initiator_tag)
580
934
self.checker_initiator_tag = None
581
935
self.stop_checker()
582
936
self.enabled = False
583
# Do not run this again if called by a gobject.timeout_add
937
if not quiet:
938
self.send_changedstate()
939
# Do not run this again if called by a GLib.timeout_add
584
940
return False
585
941
586
942
def __del__(self):
589
945
def init_checker(self):
590
946
# Schedule a new checker to be started an 'interval' from now,
591
947
# and every interval from then on.
592
self.checker_initiator_tag = (gobject.timeout_add
593
(self.interval_milliseconds(),
594
self.start_checker))
948
if self.checker_initiator_tag is not None:
949
GLib.source_remove(self.checker_initiator_tag)
950
self.checker_initiator_tag = GLib.timeout_add(
951
int(self.interval.total_seconds() * 1000),
952
self.start_checker)
595
953
# Schedule a disable() when 'timeout' has passed
596
self.disable_initiator_tag = (gobject.timeout_add
597
(self.timeout_milliseconds(),
598
self.disable))
954
if self.disable_initiator_tag is not None:
955
GLib.source_remove(self.disable_initiator_tag)
956
self.disable_initiator_tag = GLib.timeout_add(
957
int(self.timeout.total_seconds() * 1000), self.disable)
599
958
# Also start a new checker *right now*.
600
959
self.start_checker()
601
960
602
def checker_callback(self, pid, condition, command):
961
def checker_callback(self, source, condition, connection,
962
command):
603
963
"""The checker has completed, so take appropriate actions."""
604
964
self.checker_callback_tag = None
605
965
self.checker = None
606
if os.WIFEXITED(condition):
607
self.last_checker_status = os.WEXITSTATUS(condition)
966
# Read return code from connection (see call_pipe)
967
returncode = connection.recv()
968
connection.close()
969
970
if returncode >= 0:
971
self.last_checker_status = returncode
972
self.last_checker_signal = None
608
973
if self.last_checker_status == 0:
609
974
logger.info("Checker for %(name)s succeeded",
610
975
vars(self))
611
976
self.checked_ok()
612
977
else:
613
logger.info("Checker for %(name)s failed",
614
vars(self))
978
logger.info("Checker for %(name)s failed", vars(self))
615
979
else:
616
980
self.last_checker_status = -1
981
self.last_checker_signal = -returncode
617
982
logger.warning("Checker for %(name)s crashed?",
618
983
vars(self))
619
620
def checked_ok(self, timeout=None):
621
"""Bump up the timeout for this client.
622
623
This should only be called when the client has been seen,
624
alive and well.
625
"""
984
return False
985
986
def checked_ok(self):
987
"""Assert that the client has been seen, alive and well."""
988
self.last_checked_ok = datetime.datetime.utcnow()
989
self.last_checker_status = 0
990
self.last_checker_signal = None
991
self.bump_timeout()
992
993
def bump_timeout(self, timeout=None):
994
"""Bump up the timeout for this client."""
626
995
if timeout is None:
627
996
timeout = self.timeout
628
self.last_checked_ok = datetime.datetime.utcnow()
629
997
if self.disable_initiator_tag is not None:
630
gobject.source_remove(self.disable_initiator_tag)
998
GLib.source_remove(self.disable_initiator_tag)
999
self.disable_initiator_tag = None
631
1000
if getattr(self, "enabled", False):
632
self.disable_initiator_tag = (gobject.timeout_add
633
(timedelta_to_milliseconds
634
(timeout), self.disable))
1001
self.disable_initiator_tag = GLib.timeout_add(
1002
int(timeout.total_seconds() * 1000), self.disable)
635
1003
self.expires = datetime.datetime.utcnow() + timeout
636
1004
637
1005
def need_approval(self):
643
1011
If a checker already exists, leave it running and do
644
1012
nothing."""
645
1013
# The reason for not killing a running checker is that if we
646
# did that, then if a checker (for some reason) started
647
# running slowly and taking more than 'interval' time, the
648
# client would inevitably timeout, since no checker would get
649
# a chance to run to completion. If we instead leave running
1014
# did that, and if a checker (for some reason) started running
1015
# slowly and taking more than 'interval' time, then the client
1016
# would inevitably timeout, since no checker would get a
1017
# chance to run to completion. If we instead leave running
650
1018
# checkers alone, the checker would have to take more time
651
1019
# than 'timeout' for the client to be disabled, which is as it
652
1020
# should be.
653
1021
654
# If a checker exists, make sure it is not a zombie
655
try:
656
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
657
except (AttributeError, OSError) as error:
658
if (isinstance(error, OSError)
659
and error.errno != errno.ECHILD):
660
raise error
661
else:
662
if pid:
663
logger.warning("Checker was a zombie")
664
gobject.source_remove(self.checker_callback_tag)
665
self.checker_callback(pid, status,
666
self.current_checker_command)
1022
if self.checker is not None and not self.checker.is_alive():
1023
logger.warning("Checker was not alive; joining")
1024
self.checker.join()
1025
self.checker = None
667
1026
# Start a new checker if needed
668
1027
if self.checker is None:
1028
# Escape attributes for the shell
1029
escaped_attrs = {
1030
attr: re.escape(str(getattr(self, attr)))
1031
for attr in self.runtime_expansions }
669
1032
try:
670
# In case checker_command has exactly one % operator
671
command = self.checker_command % self.host
672
except TypeError:
673
# Escape attributes for the shell
674
escaped_attrs = dict(
675
(attr,
676
re.escape(unicode(str(getattr(self, attr, "")),
677
errors=
678
'replace')))
679
for attr in
680
self.runtime_expansions)
681
682
try:
683
command = self.checker_command % escaped_attrs
684
except TypeError as error:
685
logger.error('Could not format string "%s":'
686
' %s', self.checker_command, error)
687
return True # Try again later
1033
command = self.checker_command % escaped_attrs
1034
except TypeError as error:
1035
logger.error('Could not format string "%s"',
1036
self.checker_command,
1037
exc_info=error)
1038
return True # Try again later
688
1039
self.current_checker_command = command
689
try:
690
logger.info("Starting checker %r for %s",
691
command, self.name)
692
# We don't need to redirect stdout and stderr, since
693
# in normal mode, that is already done by daemon(),
694
# and in debug mode we don't want to. (Stdin is
695
# always replaced by /dev/null.)
696
self.checker = subprocess.Popen(command,
697
close_fds=True,
698
shell=True, cwd="/")
699
self.checker_callback_tag = (gobject.child_watch_add
700
(self.checker.pid,
701
self.checker_callback,
702
data=command))
703
# The checker may have completed before the gobject
704
# watch was added. Check for this.
705
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
706
if pid:
707
gobject.source_remove(self.checker_callback_tag)
708
self.checker_callback(pid, status, command)
709
except OSError as error:
710
logger.error("Failed to start subprocess: %s",
711
error)
712
# Re-run this periodically if run by gobject.timeout_add
1040
logger.info("Starting checker %r for %s", command,
1041
self.name)
1042
# We don't need to redirect stdout and stderr, since
1043
# in normal mode, that is already done by daemon(),
1044
# and in debug mode we don't want to. (Stdin is
1045
# always replaced by /dev/null.)
1046
# The exception is when not debugging but nevertheless
1047
# running in the foreground; use the previously
1048
# created wnull.
1049
popen_args = { "close_fds": True,
1050
"shell": True,
1051
"cwd": "/" }
1052
if (not self.server_settings["debug"]
1053
and self.server_settings["foreground"]):
1054
popen_args.update({"stdout": wnull,
1055
"stderr": wnull })
1056
pipe = multiprocessing.Pipe(duplex = False)
1057
self.checker = multiprocessing.Process(
1058
target = call_pipe,
1059
args = (pipe[1], subprocess.call, command),
1060
kwargs = popen_args)
1061
self.checker.start()
1062
self.checker_callback_tag = GLib.io_add_watch(
1063
pipe[0].fileno(), GLib.IO_IN,
1064
self.checker_callback, pipe[0], command)
1065
# Re-run this periodically if run by GLib.timeout_add
713
1066
return True
714
1067
715
1068
def stop_checker(self):
716
1069
"""Force the checker process, if any, to stop."""
717
1070
if self.checker_callback_tag:
718
gobject.source_remove(self.checker_callback_tag)
1071
GLib.source_remove(self.checker_callback_tag)
719
1072
self.checker_callback_tag = None
720
1073
if getattr(self, "checker", None) is None:
721
1074
return
722
1075
logger.debug("Stopping checker for %(name)s", vars(self))
723
try:
724
os.kill(self.checker.pid, signal.SIGTERM)
725
#time.sleep(0.5)
726
#if self.checker.poll() is None:
727
# os.kill(self.checker.pid, signal.SIGKILL)
728
except OSError as error:
729
if error.errno != errno.ESRCH: # No such process
730
raise
1076
self.checker.terminate()
731
1077
self.checker = None
732
1078
733
1079
734
def dbus_service_property(dbus_interface, signature="v",
735
access="readwrite", byte_arrays=False):
1080
def dbus_service_property(dbus_interface,
1081
signature="v",
1082
access="readwrite",
1083
byte_arrays=False):
736
1084
"""Decorators for marking methods of a DBusObjectWithProperties to
737
1085
become properties on the D-Bus.
738
1086
747
1095
# "Set" method, so we fail early here:
748
1096
if byte_arrays and signature != "ay":
749
1097
raise ValueError("Byte arrays not supported for non-'ay'"
750
" signature %r" % signature)
1098
" signature {!r}".format(signature))
1099
751
1100
def decorator(func):
752
1101
func._dbus_is_property = True
753
1102
func._dbus_interface = dbus_interface
758
1107
func._dbus_name = func._dbus_name[:-14]
759
1108
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
760
1109
return func
1110
1111
return decorator
1112
1113
1114
def dbus_interface_annotations(dbus_interface):
1115
"""Decorator for marking functions returning interface annotations
1116
1117
Usage:
1118
1119
@dbus_interface_annotations("org.example.Interface")
1120
def _foo(self): # Function name does not matter
1121
return {"org.freedesktop.DBus.Deprecated": "true",
1122
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1123
"false"}
1124
"""
1125
1126
def decorator(func):
1127
func._dbus_is_interface = True
1128
func._dbus_interface = dbus_interface
1129
func._dbus_name = dbus_interface
1130
return func
1131
1132
return decorator
1133
1134
1135
def dbus_annotations(annotations):
1136
"""Decorator to annotate D-Bus methods, signals or properties
1137
Usage:
1138
1139
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1140
"org.freedesktop.DBus.Property."
1141
"EmitsChangedSignal": "false"})
1142
@dbus_service_property("org.example.Interface", signature="b",
1143
access="r")
1144
def Property_dbus_property(self):
1145
return dbus.Boolean(False)
1146
1147
See also the DBusObjectWithAnnotations class.
1148
"""
1149
1150
def decorator(func):
1151
func._dbus_annotations = annotations
1152
return func
1153
761
1154
return decorator
762
1155
763
1156
764
1157
class DBusPropertyException(dbus.exceptions.DBusException):
765
1158
"""A base class for D-Bus property-related exceptions
766
1159
"""
767
def __unicode__(self):
768
return unicode(str(self))
1160
pass
769
1161
770
1162
771
1163
class DBusPropertyAccessException(DBusPropertyException):
780
1172
pass
781
1173
782
1174
783
class DBusObjectWithProperties(dbus.service.Object):
1175
class DBusObjectWithAnnotations(dbus.service.Object):
1176
"""A D-Bus object with annotations.
1177
1178
Classes inheriting from this can use the dbus_annotations
1179
decorator to add annotations to methods or signals.
1180
"""
1181
1182
@staticmethod
1183
def _is_dbus_thing(thing):
1184
"""Returns a function testing if an attribute is a D-Bus thing
1185
1186
If called like _is_dbus_thing("method") it returns a function
1187
suitable for use as predicate to inspect.getmembers().
1188
"""
1189
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1190
False)
1191
1192
def _get_all_dbus_things(self, thing):
1193
"""Returns a generator of (name, attribute) pairs
1194
"""
1195
return ((getattr(athing.__get__(self), "_dbus_name", name),
1196
athing.__get__(self))
1197
for cls in self.__class__.__mro__
1198
for name, athing in
1199
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1200
1201
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1202
out_signature = "s",
1203
path_keyword = 'object_path',
1204
connection_keyword = 'connection')
1205
def Introspect(self, object_path, connection):
1206
"""Overloading of standard D-Bus method.
1207
1208
Inserts annotation tags on methods and signals.
1209
"""
1210
xmlstring = dbus.service.Object.Introspect(self, object_path,
1211
connection)
1212
try:
1213
document = xml.dom.minidom.parseString(xmlstring)
1214
1215
for if_tag in document.getElementsByTagName("interface"):
1216
# Add annotation tags
1217
for typ in ("method", "signal"):
1218
for tag in if_tag.getElementsByTagName(typ):
1219
annots = dict()
1220
for name, prop in (self.
1221
_get_all_dbus_things(typ)):
1222
if (name == tag.getAttribute("name")
1223
and prop._dbus_interface
1224
== if_tag.getAttribute("name")):
1225
annots.update(getattr(
1226
prop, "_dbus_annotations", {}))
1227
for name, value in annots.items():
1228
ann_tag = document.createElement(
1229
"annotation")
1230
ann_tag.setAttribute("name", name)
1231
ann_tag.setAttribute("value", value)
1232
tag.appendChild(ann_tag)
1233
# Add interface annotation tags
1234
for annotation, value in dict(
1235
itertools.chain.from_iterable(
1236
annotations().items()
1237
for name, annotations
1238
in self._get_all_dbus_things("interface")
1239
if name == if_tag.getAttribute("name")
1240
)).items():
1241
ann_tag = document.createElement("annotation")
1242
ann_tag.setAttribute("name", annotation)
1243
ann_tag.setAttribute("value", value)
1244
if_tag.appendChild(ann_tag)
1245
# Fix argument name for the Introspect method itself
1246
if (if_tag.getAttribute("name")
1247
== dbus.INTROSPECTABLE_IFACE):
1248
for cn in if_tag.getElementsByTagName("method"):
1249
if cn.getAttribute("name") == "Introspect":
1250
for arg in cn.getElementsByTagName("arg"):
1251
if (arg.getAttribute("direction")
1252
== "out"):
1253
arg.setAttribute("name",
1254
"xml_data")
1255
xmlstring = document.toxml("utf-8")
1256
document.unlink()
1257
except (AttributeError, xml.dom.DOMException,
1258
xml.parsers.expat.ExpatError) as error:
1259
logger.error("Failed to override Introspection method",
1260
exc_info=error)
1261
return xmlstring
1262
1263
1264
class DBusObjectWithProperties(DBusObjectWithAnnotations):
784
1265
"""A D-Bus object with properties.
785
1266
786
1267
Classes inheriting from this can use the dbus_service_property
788
1269
standard Get(), Set(), and GetAll() methods on the D-Bus.
789
1270
"""
790
1271
791
@staticmethod
792
def _is_dbus_property(obj):
793
return getattr(obj, "_dbus_is_property", False)
794
795
def _get_all_dbus_properties(self):
796
"""Returns a generator of (name, attribute) pairs
797
"""
798
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
799
for cls in self.__class__.__mro__
800
for name, prop in
801
inspect.getmembers(cls, self._is_dbus_property))
802
803
1272
def _get_dbus_property(self, interface_name, property_name):
804
1273
"""Returns a bound method if one exists which is a D-Bus
805
1274
property with the specified name and interface.
806
1275
"""
807
for cls in self.__class__.__mro__:
808
for name, value in (inspect.getmembers
809
(cls, self._is_dbus_property)):
1276
for cls in self.__class__.__mro__:
1277
for name, value in inspect.getmembers(
1278
cls, self._is_dbus_thing("property")):
810
1279
if (value._dbus_name == property_name
811
1280
and value._dbus_interface == interface_name):
812
1281
return value.__get__(self)
813
1282
814
1283
# No such property
815
raise DBusPropertyNotFound(self.dbus_object_path + ":"
816
+ interface_name + "."
817
+ property_name)
818
819
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1284
raise DBusPropertyNotFound("{}:{}.{}".format(
1285
self.dbus_object_path, interface_name, property_name))
1286
1287
@classmethod
1288
def _get_all_interface_names(cls):
1289
"""Get a sequence of all interfaces supported by an object"""
1290
return (name for name in set(getattr(getattr(x, attr),
1291
"_dbus_interface", None)
1292
for x in (inspect.getmro(cls))
1293
for attr in dir(x))
1294
if name is not None)
1295
1296
@dbus.service.method(dbus.PROPERTIES_IFACE,
1297
in_signature="ss",
820
1298
out_signature="v")
821
1299
def Get(self, interface_name, property_name):
822
1300
"""Standard D-Bus property Get() method, see D-Bus standard.
840
1318
# The byte_arrays option is not supported yet on
841
1319
# signatures other than "ay".
842
1320
if prop._dbus_signature != "ay":
843
raise ValueError
844
value = dbus.ByteArray(''.join(unichr(byte)
845
for byte in value))
1321
raise ValueError("Byte arrays not supported for non-"
1322
"'ay' signature {!r}"
1323
.format(prop._dbus_signature))
1324
value = dbus.ByteArray(b''.join(chr(byte)
1325
for byte in value))
846
1326
prop(value)
847
1327
848
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1328
@dbus.service.method(dbus.PROPERTIES_IFACE,
1329
in_signature="s",
849
1330
out_signature="a{sv}")
850
1331
def GetAll(self, interface_name):
851
1332
"""Standard D-Bus property GetAll() method, see D-Bus
854
1335
Note: Will not include properties with access="write".
855
1336
"""
856
1337
properties = {}
857
for name, prop in self._get_all_dbus_properties():
1338
for name, prop in self._get_all_dbus_things("property"):
858
1339
if (interface_name
859
1340
and interface_name != prop._dbus_interface):
860
1341
# Interface non-empty but did not match
866
1347
if not hasattr(value, "variant_level"):
867
1348
properties[name] = value
868
1349
continue
869
properties[name] = type(value)(value, variant_level=
870
value.variant_level+1)
1350
properties[name] = type(value)(
1351
value, variant_level = value.variant_level + 1)
871
1352
return dbus.Dictionary(properties, signature="sv")
872
1353
1354
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1355
def PropertiesChanged(self, interface_name, changed_properties,
1356
invalidated_properties):
1357
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1358
standard.
1359
"""
1360
pass
1361
873
1362
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
874
1363
out_signature="s",
875
1364
path_keyword='object_path',
876
1365
connection_keyword='connection')
877
1366
def Introspect(self, object_path, connection):
878
"""Standard D-Bus method, overloaded to insert property tags.
1367
"""Overloading of standard D-Bus method.
1368
1369
Inserts property tags and interface annotation tags.
879
1370
"""
880
xmlstring = dbus.service.Object.Introspect(self, object_path,
881
connection)
1371
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1372
object_path,
1373
connection)
882
1374
try:
883
1375
document = xml.dom.minidom.parseString(xmlstring)
1376
884
1377
def make_tag(document, name, prop):
885
1378
e = document.createElement("property")
886
1379
e.setAttribute("name", name)
887
1380
e.setAttribute("type", prop._dbus_signature)
888
1381
e.setAttribute("access", prop._dbus_access)
889
1382
return e
1383
890
1384
for if_tag in document.getElementsByTagName("interface"):
1385
# Add property tags
891
1386
for tag in (make_tag(document, name, prop)
892
1387
for name, prop
893
in self._get_all_dbus_properties()
1388
in self._get_all_dbus_things("property")
894
1389
if prop._dbus_interface
895
1390
== if_tag.getAttribute("name")):
896
1391
if_tag.appendChild(tag)
1392
# Add annotation tags for properties
1393
for tag in if_tag.getElementsByTagName("property"):
1394
annots = dict()
1395
for name, prop in self._get_all_dbus_things(
1396
"property"):
1397
if (name == tag.getAttribute("name")
1398
and prop._dbus_interface
1399
== if_tag.getAttribute("name")):
1400
annots.update(getattr(
1401
prop, "_dbus_annotations", {}))
1402
for name, value in annots.items():
1403
ann_tag = document.createElement(
1404
"annotation")
1405
ann_tag.setAttribute("name", name)
1406
ann_tag.setAttribute("value", value)
1407
tag.appendChild(ann_tag)
897
1408
# Add the names to the return values for the
898
1409
# "org.freedesktop.DBus.Properties" methods
899
1410
if (if_tag.getAttribute("name")
914
1425
except (AttributeError, xml.dom.DOMException,
915
1426
xml.parsers.expat.ExpatError) as error:
916
1427
logger.error("Failed to override Introspection method",
917
error)
918
return xmlstring
919
920
921
def datetime_to_dbus (dt, variant_level=0):
1428
exc_info=error)
1429
return xmlstring
1430
1431
try:
1432
dbus.OBJECT_MANAGER_IFACE
1433
except AttributeError:
1434
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1435
1436
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1437
"""A D-Bus object with an ObjectManager.
1438
1439
Classes inheriting from this exposes the standard
1440
GetManagedObjects call and the InterfacesAdded and
1441
InterfacesRemoved signals on the standard
1442
"org.freedesktop.DBus.ObjectManager" interface.
1443
1444
Note: No signals are sent automatically; they must be sent
1445
manually.
1446
"""
1447
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1448
out_signature = "a{oa{sa{sv}}}")
1449
def GetManagedObjects(self):
1450
"""This function must be overridden"""
1451
raise NotImplementedError()
1452
1453
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1454
signature = "oa{sa{sv}}")
1455
def InterfacesAdded(self, object_path, interfaces_and_properties):
1456
pass
1457
1458
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature = "oas")
1459
def InterfacesRemoved(self, object_path, interfaces):
1460
pass
1461
1462
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1463
out_signature = "s",
1464
path_keyword = 'object_path',
1465
connection_keyword = 'connection')
1466
def Introspect(self, object_path, connection):
1467
"""Overloading of standard D-Bus method.
1468
1469
Override return argument name of GetManagedObjects to be
1470
"objpath_interfaces_and_properties"
1471
"""
1472
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1473
object_path,
1474
connection)
1475
try:
1476
document = xml.dom.minidom.parseString(xmlstring)
1477
1478
for if_tag in document.getElementsByTagName("interface"):
1479
# Fix argument name for the GetManagedObjects method
1480
if (if_tag.getAttribute("name")
1481
== dbus.OBJECT_MANAGER_IFACE):
1482
for cn in if_tag.getElementsByTagName("method"):
1483
if (cn.getAttribute("name")
1484
== "GetManagedObjects"):
1485
for arg in cn.getElementsByTagName("arg"):
1486
if (arg.getAttribute("direction")
1487
== "out"):
1488
arg.setAttribute(
1489
"name",
1490
"objpath_interfaces"
1491
"_and_properties")
1492
xmlstring = document.toxml("utf-8")
1493
document.unlink()
1494
except (AttributeError, xml.dom.DOMException,
1495
xml.parsers.expat.ExpatError) as error:
1496
logger.error("Failed to override Introspection method",
1497
exc_info = error)
1498
return xmlstring
1499
1500
def datetime_to_dbus(dt, variant_level=0):
922
1501
"""Convert a UTC datetime.datetime() to a D-Bus type."""
923
1502
if dt is None:
924
1503
return dbus.String("", variant_level = variant_level)
925
return dbus.String(dt.isoformat(),
926
variant_level=variant_level)
927
928
929
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
930
.__metaclass__):
931
"""Applied to an empty subclass of a D-Bus object, this metaclass
932
will add additional D-Bus attributes matching a certain pattern.
1504
return dbus.String(dt.isoformat(), variant_level=variant_level)
1505
1506
1507
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1508
"""A class decorator; applied to a subclass of
1509
dbus.service.Object, it will add alternate D-Bus attributes with
1510
interface names according to the "alt_interface_names" mapping.
1511
Usage:
1512
1513
@alternate_dbus_interfaces({"org.example.Interface":
1514
"net.example.AlternateInterface"})
1515
class SampleDBusObject(dbus.service.Object):
1516
@dbus.service.method("org.example.Interface")
1517
def SampleDBusMethod():
1518
pass
1519
1520
The above "SampleDBusMethod" on "SampleDBusObject" will be
1521
reachable via two interfaces: "org.example.Interface" and
1522
"net.example.AlternateInterface", the latter of which will have
1523
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1524
"true", unless "deprecate" is passed with a False value.
1525
1526
This works for methods and signals, and also for D-Bus properties
1527
(from DBusObjectWithProperties) and interfaces (from the
1528
dbus_interface_annotations decorator).
933
1529
"""
934
def __new__(mcs, name, bases, attr):
935
# Go through all the base classes which could have D-Bus
936
# methods, signals, or properties in them
937
for base in (b for b in bases
938
if issubclass(b, dbus.service.Object)):
939
# Go though all attributes of the base class
940
for attrname, attribute in inspect.getmembers(base):
1530
1531
def wrapper(cls):
1532
for orig_interface_name, alt_interface_name in (
1533
alt_interface_names.items()):
1534
attr = {}
1535
interface_names = set()
1536
# Go though all attributes of the class
1537
for attrname, attribute in inspect.getmembers(cls):
941
1538
# Ignore non-D-Bus attributes, and D-Bus attributes
942
1539
# with the wrong interface name
943
1540
if (not hasattr(attribute, "_dbus_interface")
944
or not attribute._dbus_interface
945
.startswith("se.recompile.Mandos")):
1541
or not attribute._dbus_interface.startswith(
1542
orig_interface_name)):
946
1543
continue
947
1544
# Create an alternate D-Bus interface name based on
948
1545
# the current name
949
alt_interface = (attribute._dbus_interface
950
.replace("se.recompile.Mandos",
951
"se.bsnet.fukt.Mandos"))
1546
alt_interface = attribute._dbus_interface.replace(
1547
orig_interface_name, alt_interface_name)
1548
interface_names.add(alt_interface)
952
1549
# Is this a D-Bus signal?
953
1550
if getattr(attribute, "_dbus_is_signal", False):
954
# Extract the original non-method function by
955
# black magic
956
nonmethod_func = (dict(
1551
# Extract the original non-method undecorated
1552
# function by black magic
1553
if sys.version_info.major == 2:
1554
nonmethod_func = (dict(
957
1555
zip(attribute.func_code.co_freevars,
958
attribute.__closure__))["func"]
959
.cell_contents)
1556
attribute.__closure__))
1557
["func"].cell_contents)
1558
else:
1559
nonmethod_func = (dict(
1560
zip(attribute.__code__.co_freevars,
1561
attribute.__closure__))
1562
["func"].cell_contents)
960
1563
# Create a new, but exactly alike, function
961
1564
# object, and decorate it to be a new D-Bus signal
962
1565
# with the alternate D-Bus interface name
963
new_function = (dbus.service.signal
964
(alt_interface,
965
attribute._dbus_signature)
966
(types.FunctionType(
967
nonmethod_func.func_code,
968
nonmethod_func.func_globals,
969
nonmethod_func.func_name,
970
nonmethod_func.func_defaults,
971
nonmethod_func.func_closure)))
1566
new_function = copy_function(nonmethod_func)
1567
new_function = (dbus.service.signal(
1568
alt_interface,
1569
attribute._dbus_signature)(new_function))
1570
# Copy annotations, if any
1571
try:
1572
new_function._dbus_annotations = dict(
1573
attribute._dbus_annotations)
1574
except AttributeError:
1575
pass
972
1576
# Define a creator of a function to call both the
973
# old and new functions, so both the old and new
974
# signals gets sent when the function is called
1577
# original and alternate functions, so both the
1578
# original and alternate signals gets sent when
1579
# the function is called
975
1580
def fixscope(func1, func2):
976
1581
"""This function is a scope container to pass
977
1582
func1 and func2 to the "call_both" function
978
1583
outside of its arguments"""
1584
1585
@functools.wraps(func2)
979
1586
def call_both(*args, **kwargs):
980
1587
"""This function will emit two D-Bus
981
1588
signals by calling func1 and func2"""
982
1589
func1(*args, **kwargs)
983
1590
func2(*args, **kwargs)
1591
# Make wrapper function look like a D-Bus signal
1592
for name, attr in inspect.getmembers(func2):
1593
if name.startswith("_dbus_"):
1594
setattr(call_both, name, attr)
1595
984
1596
return call_both
985
1597
# Create the "call_both" function and add it to
986
1598
# the class
987
attr[attrname] = fixscope(attribute,
988
new_function)
1599
attr[attrname] = fixscope(attribute, new_function)
989
1600
# Is this a D-Bus method?
990
1601
elif getattr(attribute, "_dbus_is_method", False):
991
1602
# Create a new, but exactly alike, function
992
1603
# object. Decorate it to be a new D-Bus method
993
1604
# with the alternate D-Bus interface name. Add it
994
1605
# to the class.
995
attr[attrname] = (dbus.service.method
996
(alt_interface,
997
attribute._dbus_in_signature,
998
attribute._dbus_out_signature)
999
(types.FunctionType
1000
(attribute.func_code,
1001
attribute.func_globals,
1002
attribute.func_name,
1003
attribute.func_defaults,
1004
attribute.func_closure)))
1606
attr[attrname] = (
1607
dbus.service.method(
1608
alt_interface,
1609
attribute._dbus_in_signature,
1610
attribute._dbus_out_signature)
1611
(copy_function(attribute)))
1612
# Copy annotations, if any
1613
try:
1614
attr[attrname]._dbus_annotations = dict(
1615
attribute._dbus_annotations)
1616
except AttributeError:
1617
pass
1005
1618
# Is this a D-Bus property?
1006
1619
elif getattr(attribute, "_dbus_is_property", False):
1007
1620
# Create a new, but exactly alike, function
1008
1621
# object, and decorate it to be a new D-Bus
1009
1622
# property with the alternate D-Bus interface
1010
1623
# name. Add it to the class.
1011
attr[attrname] = (dbus_service_property
1012
(alt_interface,
1013
attribute._dbus_signature,
1014
attribute._dbus_access,
1015
attribute
1016
._dbus_get_args_options
1017
["byte_arrays"])
1018
(types.FunctionType
1019
(attribute.func_code,
1020
attribute.func_globals,
1021
attribute.func_name,
1022
attribute.func_defaults,
1023
attribute.func_closure)))
1024
return type.__new__(mcs, name, bases, attr)
1025
1026
1624
attr[attrname] = (dbus_service_property(
1625
alt_interface, attribute._dbus_signature,
1626
attribute._dbus_access,
1627
attribute._dbus_get_args_options
1628
["byte_arrays"])
1629
(copy_function(attribute)))
1630
# Copy annotations, if any
1631
try:
1632
attr[attrname]._dbus_annotations = dict(
1633
attribute._dbus_annotations)
1634
except AttributeError:
1635
pass
1636
# Is this a D-Bus interface?
1637
elif getattr(attribute, "_dbus_is_interface", False):
1638
# Create a new, but exactly alike, function
1639
# object. Decorate it to be a new D-Bus interface
1640
# with the alternate D-Bus interface name. Add it
1641
# to the class.
1642
attr[attrname] = (
1643
dbus_interface_annotations(alt_interface)
1644
(copy_function(attribute)))
1645
if deprecate:
1646
# Deprecate all alternate interfaces
1647
iname="_AlternateDBusNames_interface_annotation{}"
1648
for interface_name in interface_names:
1649
1650
@dbus_interface_annotations(interface_name)
1651
def func(self):
1652
return { "org.freedesktop.DBus.Deprecated":
1653
"true" }
1654
# Find an unused name
1655
for aname in (iname.format(i)
1656
for i in itertools.count()):
1657
if aname not in attr:
1658
attr[aname] = func
1659
break
1660
if interface_names:
1661
# Replace the class with a new subclass of it with
1662
# methods, signals, etc. as created above.
1663
if sys.version_info.major == 2:
1664
cls = type(b"{}Alternate".format(cls.__name__),
1665
(cls, ), attr)
1666
else:
1667
cls = type("{}Alternate".format(cls.__name__),
1668
(cls, ), attr)
1669
return cls
1670
1671
return wrapper
1672
1673
1674
@alternate_dbus_interfaces({"se.recompile.Mandos":
1675
"se.bsnet.fukt.Mandos"})
1027
1676
class ClientDBus(Client, DBusObjectWithProperties):
1028
1677
"""A Client class using D-Bus
1029
1678
1033
1682
"""
1034
1683
1035
1684
runtime_expansions = (Client.runtime_expansions
1036
+ ("dbus_object_path",))
1685
+ ("dbus_object_path", ))
1686
1687
_interface = "se.recompile.Mandos.Client"
1037
1688
1038
1689
# dbus.service.Object doesn't use super(), so we can't either.
1039
1690
1040
1691
def __init__(self, bus = None, *args, **kwargs):
1041
1692
self.bus = bus
1042
1693
Client.__init__(self, *args, **kwargs)
1043
self._approvals_pending = 0
1044
1045
self._approvals_pending = 0
1046
1694
# Only now, when this client is initialized, can it show up on
1047
1695
# the D-Bus
1048
client_object_name = unicode(self.name).translate(
1696
client_object_name = str(self.name).translate(
1049
1697
{ord("."): ord("_"),
1050
1698
ord("-"): ord("_")})
1051
self.dbus_object_path = (dbus.ObjectPath
1052
("/clients/" + client_object_name))
1699
self.dbus_object_path = dbus.ObjectPath(
1700
"/clients/" + client_object_name)
1053
1701
DBusObjectWithProperties.__init__(self, self.bus,
1054
1702
self.dbus_object_path)
1055
1056
def notifychangeproperty(transform_func,
1057
dbus_name, type_func=lambda x: x,
1058
variant_level=1):
1703
1704
def notifychangeproperty(transform_func, dbus_name,
1705
type_func=lambda x: x,
1706
variant_level=1,
1707
invalidate_only=False,
1708
_interface=_interface):
1059
1709
""" Modify a variable so that it's a property which announces
1060
1710
its changes to DBus.
1061
1711
1066
1716
to the D-Bus. Default: no transform
1067
1717
variant_level: D-Bus variant level. Default: 1
1068
1718
"""
1069
attrname = "_{0}".format(dbus_name)
1719
attrname = "_{}".format(dbus_name)
1720
1070
1721
def setter(self, value):
1071
1722
if hasattr(self, "dbus_object_path"):
1072
1723
if (not hasattr(self, attrname) or
1073
1724
type_func(getattr(self, attrname, None))
1074
1725
!= type_func(value)):
1075
dbus_value = transform_func(type_func(value),
1076
variant_level
1077
=variant_level)
1078
self.PropertyChanged(dbus.String(dbus_name),
1079
dbus_value)
1726
if invalidate_only:
1727
self.PropertiesChanged(
1728
_interface, dbus.Dictionary(),
1729
dbus.Array((dbus_name, )))
1730
else:
1731
dbus_value = transform_func(
1732
type_func(value),
1733
variant_level = variant_level)
1734
self.PropertyChanged(dbus.String(dbus_name),
1735
dbus_value)
1736
self.PropertiesChanged(
1737
_interface,
1738
dbus.Dictionary({ dbus.String(dbus_name):
1739
dbus_value }),
1740
dbus.Array())
1080
1741
setattr(self, attrname, value)
1081
1742
1082
1743
return property(lambda self: getattr(self, attrname), setter)
1083
1744
1084
1085
1745
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1086
1746
approvals_pending = notifychangeproperty(dbus.Boolean,
1087
1747
"ApprovalPending",
1089
1749
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1090
1750
last_enabled = notifychangeproperty(datetime_to_dbus,
1091
1751
"LastEnabled")
1092
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1093
type_func = lambda checker:
1094
checker is not None)
1752
checker = notifychangeproperty(
1753
dbus.Boolean, "CheckerRunning",
1754
type_func = lambda checker: checker is not None)
1095
1755
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1096
1756
"LastCheckedOK")
1757
last_checker_status = notifychangeproperty(dbus.Int16,
1758
"LastCheckerStatus")
1097
1759
last_approval_request = notifychangeproperty(
1098
1760
datetime_to_dbus, "LastApprovalRequest")
1099
1761
approved_by_default = notifychangeproperty(dbus.Boolean,
1100
1762
"ApprovedByDefault")
1101
approval_delay = notifychangeproperty(dbus.UInt64,
1102
"ApprovalDelay",
1103
type_func =
1104
timedelta_to_milliseconds)
1763
approval_delay = notifychangeproperty(
1764
dbus.UInt64, "ApprovalDelay",
1765
type_func = lambda td: td.total_seconds() * 1000)
1105
1766
approval_duration = notifychangeproperty(
1106
1767
dbus.UInt64, "ApprovalDuration",
1107
type_func = timedelta_to_milliseconds)
1768
type_func = lambda td: td.total_seconds() * 1000)
1108
1769
host = notifychangeproperty(dbus.String, "Host")
1109
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1110
type_func =
1111
timedelta_to_milliseconds)
1770
timeout = notifychangeproperty(
1771
dbus.UInt64, "Timeout",
1772
type_func = lambda td: td.total_seconds() * 1000)
1112
1773
extended_timeout = notifychangeproperty(
1113
1774
dbus.UInt64, "ExtendedTimeout",
1114
type_func = timedelta_to_milliseconds)
1115
interval = notifychangeproperty(dbus.UInt64,
1116
"Interval",
1117
type_func =
1118
timedelta_to_milliseconds)
1775
type_func = lambda td: td.total_seconds() * 1000)
1776
interval = notifychangeproperty(
1777
dbus.UInt64, "Interval",
1778
type_func = lambda td: td.total_seconds() * 1000)
1119
1779
checker_command = notifychangeproperty(dbus.String, "Checker")
1780
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1781
invalidate_only=True)
1120
1782
1121
1783
del notifychangeproperty
1122
1784
1129
1791
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1130
1792
Client.__del__(self, *args, **kwargs)
1131
1793
1132
def checker_callback(self, pid, condition, command,
1133
*args, **kwargs):
1134
self.checker_callback_tag = None
1135
self.checker = None
1136
if os.WIFEXITED(condition):
1137
exitstatus = os.WEXITSTATUS(condition)
1794
def checker_callback(self, source, condition,
1795
connection, command, *args, **kwargs):
1796
ret = Client.checker_callback(self, source, condition,
1797
connection, command, *args,
1798
**kwargs)
1799
exitstatus = self.last_checker_status
1800
if exitstatus >= 0:
1138
1801
# Emit D-Bus signal
1139
1802
self.CheckerCompleted(dbus.Int16(exitstatus),
1140
dbus.Int64(condition),
1803
# This is specific to GNU libC
1804
dbus.Int64(exitstatus << 8),
1141
1805
dbus.String(command))
1142
1806
else:
1143
1807
# Emit D-Bus signal
1144
1808
self.CheckerCompleted(dbus.Int16(-1),
1145
dbus.Int64(condition),
1809
dbus.Int64(
1810
# This is specific to GNU libC
1811
(exitstatus << 8)
1812
| self.last_checker_signal),
1146
1813
dbus.String(command))
1147
1148
return Client.checker_callback(self, pid, condition, command,
1149
*args, **kwargs)
1814
return ret
1150
1815
1151
1816
def start_checker(self, *args, **kwargs):
1152
old_checker = self.checker
1153
if self.checker is not None:
1154
old_checker_pid = self.checker.pid
1155
else:
1156
old_checker_pid = None
1817
old_checker_pid = getattr(self.checker, "pid", None)
1157
1818
r = Client.start_checker(self, *args, **kwargs)
1158
1819
# Only if new checker process was started
1159
1820
if (self.checker is not None
1167
1828
return False
1168
1829
1169
1830
def approve(self, value=True):
1170
self.send_changedstate()
1171
1831
self.approved = value
1172
gobject.timeout_add(timedelta_to_milliseconds
1173
(self.approval_duration),
1174
self._reset_approved)
1175
1832
GLib.timeout_add(int(self.approval_duration.total_seconds()
1833
* 1000), self._reset_approved)
1834
self.send_changedstate()
1176
1835
1177
1836
## D-Bus methods, signals & properties
1178
_interface = "se.recompile.Mandos.Client"
1837
1838
## Interfaces
1179
1839
1180
1840
## Signals
1181
1841
1192
1852
pass
1193
1853
1194
1854
# PropertyChanged - signal
1855
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1195
1856
@dbus.service.signal(_interface, signature="sv")
1196
1857
def PropertyChanged(self, property, value):
1197
1858
"D-Bus signal"
1218
1879
"D-Bus signal"
1219
1880
return self.need_approval()
1220
1881
1221
# NeRwequest - signal
1222
@dbus.service.signal(_interface, signature="s")
1223
def NewRequest(self, ip):
1224
"""D-Bus signal
1225
Is sent after a client request a password.
1226
"""
1227
pass
1228
1229
1882
## Methods
1230
1883
1231
1884
# Approve - method
1239
1892
self.checked_ok()
1240
1893
1241
1894
# Enable - method
1895
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1242
1896
@dbus.service.method(_interface)
1243
1897
def Enable(self):
1244
1898
"D-Bus method"
1245
1899
self.enable()
1246
1900
1247
1901
# StartChecker - method
1902
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1248
1903
@dbus.service.method(_interface)
1249
1904
def StartChecker(self):
1250
1905
"D-Bus method"
1251
1906
self.start_checker()
1252
1907
1253
1908
# Disable - method
1909
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1254
1910
@dbus.service.method(_interface)
1255
1911
def Disable(self):
1256
1912
"D-Bus method"
1257
1913
self.disable()
1258
1914
1259
1915
# StopChecker - method
1916
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1260
1917
@dbus.service.method(_interface)
1261
1918
def StopChecker(self):
1262
1919
self.stop_checker()
1269
1926
return dbus.Boolean(bool(self.approvals_pending))
1270
1927
1271
1928
# ApprovedByDefault - property
1272
@dbus_service_property(_interface, signature="b",
1929
@dbus_service_property(_interface,
1930
signature="b",
1273
1931
access="readwrite")
1274
1932
def ApprovedByDefault_dbus_property(self, value=None):
1275
1933
if value is None: # get
1277
1935
self.approved_by_default = bool(value)
1278
1936
1279
1937
# ApprovalDelay - property
1280
@dbus_service_property(_interface, signature="t",
1938
@dbus_service_property(_interface,
1939
signature="t",
1281
1940
access="readwrite")
1282
1941
def ApprovalDelay_dbus_property(self, value=None):
1283
1942
if value is None: # get
1284
return dbus.UInt64(self.approval_delay_milliseconds())
1943
return dbus.UInt64(self.approval_delay.total_seconds()
1944
* 1000)
1285
1945
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1286
1946
1287
1947
# ApprovalDuration - property
1288
@dbus_service_property(_interface, signature="t",
1948
@dbus_service_property(_interface,
1949
signature="t",
1289
1950
access="readwrite")
1290
1951
def ApprovalDuration_dbus_property(self, value=None):
1291
1952
if value is None: # get
1292
return dbus.UInt64(timedelta_to_milliseconds(
1293
self.approval_duration))
1953
return dbus.UInt64(self.approval_duration.total_seconds()
1954
* 1000)
1294
1955
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1295
1956
1296
1957
# Name - property
1958
@dbus_annotations(
1959
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1297
1960
@dbus_service_property(_interface, signature="s", access="read")
1298
1961
def Name_dbus_property(self):
1299
1962
return dbus.String(self.name)
1300
1963
1301
1964
# Fingerprint - property
1965
@dbus_annotations(
1966
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1302
1967
@dbus_service_property(_interface, signature="s", access="read")
1303
1968
def Fingerprint_dbus_property(self):
1304
1969
return dbus.String(self.fingerprint)
1305
1970
1306
1971
# Host - property
1307
@dbus_service_property(_interface, signature="s",
1972
@dbus_service_property(_interface,
1973
signature="s",
1308
1974
access="readwrite")
1309
1975
def Host_dbus_property(self, value=None):
1310
1976
if value is None: # get
1311
1977
return dbus.String(self.host)
1312
self.host = unicode(value)
1978
self.host = str(value)
1313
1979
1314
1980
# Created - property
1981
@dbus_annotations(
1982
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1315
1983
@dbus_service_property(_interface, signature="s", access="read")
1316
1984
def Created_dbus_property(self):
1317
1985
return datetime_to_dbus(self.created)
1322
1990
return datetime_to_dbus(self.last_enabled)
1323
1991
1324
1992
# Enabled - property
1325
@dbus_service_property(_interface, signature="b",
1993
@dbus_service_property(_interface,
1994
signature="b",
1326
1995
access="readwrite")
1327
1996
def Enabled_dbus_property(self, value=None):
1328
1997
if value is None: # get
1333
2002
self.disable()
1334
2003
1335
2004
# LastCheckedOK - property
1336
@dbus_service_property(_interface, signature="s",
2005
@dbus_service_property(_interface,
2006
signature="s",
1337
2007
access="readwrite")
1338
2008
def LastCheckedOK_dbus_property(self, value=None):
1339
2009
if value is not None:
1341
2011
return
1342
2012
return datetime_to_dbus(self.last_checked_ok)
1343
2013
2014
# LastCheckerStatus - property
2015
@dbus_service_property(_interface, signature="n", access="read")
2016
def LastCheckerStatus_dbus_property(self):
2017
return dbus.Int16(self.last_checker_status)
2018
1344
2019
# Expires - property
1345
2020
@dbus_service_property(_interface, signature="s", access="read")
1346
2021
def Expires_dbus_property(self):
1352
2027
return datetime_to_dbus(self.last_approval_request)
1353
2028
1354
2029
# Timeout - property
1355
@dbus_service_property(_interface, signature="t",
2030
@dbus_service_property(_interface,
2031
signature="t",
1356
2032
access="readwrite")
1357
2033
def Timeout_dbus_property(self, value=None):
1358
2034
if value is None: # get
1359
return dbus.UInt64(self.timeout_milliseconds())
2035
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2036
old_timeout = self.timeout
1360
2037
self.timeout = datetime.timedelta(0, 0, 0, value)
1361
if getattr(self, "disable_initiator_tag", None) is None:
1362
return
1363
# Reschedule timeout
1364
gobject.source_remove(self.disable_initiator_tag)
1365
self.disable_initiator_tag = None
1366
self.expires = None
1367
time_to_die = timedelta_to_milliseconds((self
1368
.last_checked_ok
1369
+ self.timeout)
1370
- datetime.datetime
1371
.utcnow())
1372
if time_to_die <= 0:
1373
# The timeout has passed
1374
self.disable()
1375
else:
1376
self.expires = (datetime.datetime.utcnow()
1377
+ datetime.timedelta(milliseconds =
1378
time_to_die))
1379
self.disable_initiator_tag = (gobject.timeout_add
1380
(time_to_die, self.disable))
2038
# Reschedule disabling
2039
if self.enabled:
2040
now = datetime.datetime.utcnow()
2041
self.expires += self.timeout - old_timeout
2042
if self.expires <= now:
2043
# The timeout has passed
2044
self.disable()
2045
else:
2046
if (getattr(self, "disable_initiator_tag", None)
2047
is None):
2048
return
2049
GLib.source_remove(self.disable_initiator_tag)
2050
self.disable_initiator_tag = GLib.timeout_add(
2051
int((self.expires - now).total_seconds() * 1000),
2052
self.disable)
1381
2053
1382
2054
# ExtendedTimeout - property
1383
@dbus_service_property(_interface, signature="t",
2055
@dbus_service_property(_interface,
2056
signature="t",
1384
2057
access="readwrite")
1385
2058
def ExtendedTimeout_dbus_property(self, value=None):
1386
2059
if value is None: # get
1387
return dbus.UInt64(self.extended_timeout_milliseconds())
2060
return dbus.UInt64(self.extended_timeout.total_seconds()
2061
* 1000)
1388
2062
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1389
2063
1390
2064
# Interval - property
1391
@dbus_service_property(_interface, signature="t",
2065
@dbus_service_property(_interface,
2066
signature="t",
1392
2067
access="readwrite")
1393
2068
def Interval_dbus_property(self, value=None):
1394
2069
if value is None: # get
1395
return dbus.UInt64(self.interval_milliseconds())
2070
return dbus.UInt64(self.interval.total_seconds() * 1000)
1396
2071
self.interval = datetime.timedelta(0, 0, 0, value)
1397
2072
if getattr(self, "checker_initiator_tag", None) is None:
1398
2073
return
1399
2074
if self.enabled:
1400
2075
# Reschedule checker run
1401
gobject.source_remove(self.checker_initiator_tag)
1402
self.checker_initiator_tag = (gobject.timeout_add
1403
(value, self.start_checker))
1404
self.start_checker() # Start one now, too
2076
GLib.source_remove(self.checker_initiator_tag)
2077
self.checker_initiator_tag = GLib.timeout_add(
2078
value, self.start_checker)
2079
self.start_checker() # Start one now, too
1405
2080
1406
2081
# Checker - property
1407
@dbus_service_property(_interface, signature="s",
2082
@dbus_service_property(_interface,
2083
signature="s",
1408
2084
access="readwrite")
1409
2085
def Checker_dbus_property(self, value=None):
1410
2086
if value is None: # get
1411
2087
return dbus.String(self.checker_command)
1412
self.checker_command = unicode(value)
2088
self.checker_command = str(value)
1413
2089
1414
2090
# CheckerRunning - property
1415
@dbus_service_property(_interface, signature="b",
2091
@dbus_service_property(_interface,
2092
signature="b",
1416
2093
access="readwrite")
1417
2094
def CheckerRunning_dbus_property(self, value=None):
1418
2095
if value is None: # get
1423
2100
self.stop_checker()
1424
2101
1425
2102
# ObjectPath - property
2103
@dbus_annotations(
2104
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2105
"org.freedesktop.DBus.Deprecated": "true"})
1426
2106
@dbus_service_property(_interface, signature="o", access="read")
1427
2107
def ObjectPath_dbus_property(self):
1428
2108
return self.dbus_object_path # is already a dbus.ObjectPath
1429
2109
1430
2110
# Secret = property
1431
@dbus_service_property(_interface, signature="ay",
1432
access="write", byte_arrays=True)
2111
@dbus_annotations(
2112
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2113
"invalidates"})
2114
@dbus_service_property(_interface,
2115
signature="ay",
2116
access="write",
2117
byte_arrays=True)
1433
2118
def Secret_dbus_property(self, value):
1434
self.secret = str(value)
2119
self.secret = bytes(value)
1435
2120
1436
2121
del _interface
1437
2122
1441
2126
self._pipe = child_pipe
1442
2127
self._pipe.send(('init', fpr, address))
1443
2128
if not self._pipe.recv():
1444
raise KeyError()
2129
raise KeyError(fpr)
1445
2130
1446
2131
def __getattribute__(self, name):
1447
2132
if name == '_pipe':
1451
2136
if data[0] == 'data':
1452
2137
return data[1]
1453
2138
if data[0] == 'function':
2139
1454
2140
def func(*args, **kwargs):
1455
2141
self._pipe.send(('funcall', name, args, kwargs))
1456
2142
return self._pipe.recv()[1]
2143
1457
2144
return func
1458
2145
1459
2146
def __setattr__(self, name, value):
1462
2149
self._pipe.send(('setattr', name, value))
1463
2150
1464
2151
1465
class ClientDBusTransitional(ClientDBus):
1466
__metaclass__ = AlternateDBusNamesMetaclass
1467
1468
1469
2152
class ClientHandler(socketserver.BaseRequestHandler, object):
1470
2153
"""A class to handle client connections.
1471
2154
1475
2158
def handle(self):
1476
2159
with contextlib.closing(self.server.child_pipe) as child_pipe:
1477
2160
logger.info("TCP connection from: %s",
1478
unicode(self.client_address))
2161
str(self.client_address))
1479
2162
logger.debug("Pipe FD: %d",
1480
2163
self.server.child_pipe.fileno())
1481
2164
1482
session = (gnutls.connection
1483
.ClientSession(self.request,
1484
gnutls.connection
1485
.X509Credentials()))
1486
1487
# Note: gnutls.connection.X509Credentials is really a
1488
# generic GnuTLS certificate credentials object so long as
1489
# no X.509 keys are added to it. Therefore, we can use it
1490
# here despite using OpenPGP certificates.
2165
session = gnutls.ClientSession(self.request)
1491
2166
1492
2167
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1493
2168
# "+AES-256-CBC", "+SHA1",
1497
2172
priority = self.server.gnutls_priority
1498
2173
if priority is None:
1499
2174
priority = "NORMAL"
1500
(gnutls.library.functions
1501
.gnutls_priority_set_direct(session._c_object,
1502
priority, None))
2175
gnutls.priority_set_direct(session._c_object, priority,
2176
None)
1503
2177
1504
2178
# Start communication using the Mandos protocol
1505
2179
# Get protocol number
1507
2181
logger.debug("Protocol version: %r", line)
1508
2182
try:
1509
2183
if int(line.strip().split()[0]) > 1:
1510
raise RuntimeError
2184
raise RuntimeError(line)
1511
2185
except (ValueError, IndexError, RuntimeError) as error:
1512
2186
logger.error("Unknown protocol version: %s", error)
1513
2187
return
1515
2189
# Start GnuTLS connection
1516
2190
try:
1517
2191
session.handshake()
1518
except gnutls.errors.GNUTLSError as error:
2192
except gnutls.Error as error:
1519
2193
logger.warning("Handshake failed: %s", error)
1520
2194
# Do not run session.bye() here: the session is not
1521
2195
# established. Just abandon the request.
1525
2199
approval_required = False
1526
2200
try:
1527
2201
try:
1528
fpr = self.fingerprint(self.peer_certificate
1529
(session))
1530
except (TypeError,
1531
gnutls.errors.GNUTLSError) as error:
2202
fpr = self.fingerprint(
2203
self.peer_certificate(session))
2204
except (TypeError, gnutls.Error) as error:
1532
2205
logger.warning("Bad certificate: %s", error)
1533
2206
return
1534
2207
logger.debug("Fingerprint: %s", fpr)
1539
2212
except KeyError:
1540
2213
return
1541
2214
1542
if self.server.use_dbus:
1543
# Emit D-Bus signal
1544
client.NewRequest(str(self.client_address))
1545
1546
2215
if client.approval_delay:
1547
2216
delay = client.approval_delay
1548
2217
client.approvals_pending += 1
1551
2220
while True:
1552
2221
if not client.enabled:
1553
2222
logger.info("Client %s is disabled",
1554
client.name)
2223
client.name)
1555
2224
if self.server.use_dbus:
1556
2225
# Emit D-Bus signal
1557
2226
client.Rejected("Disabled")
1566
2235
if self.server.use_dbus:
1567
2236
# Emit D-Bus signal
1568
2237
client.NeedApproval(
1569
client.approval_delay_milliseconds(),
1570
client.approved_by_default)
2238
client.approval_delay.total_seconds()
2239
* 1000, client.approved_by_default)
1571
2240
else:
1572
2241
logger.warning("Client %s was not approved",
1573
2242
client.name)
1579
2248
#wait until timeout or approved
1580
2249
time = datetime.datetime.now()
1581
2250
client.changedstate.acquire()
1582
(client.changedstate.wait
1583
(float(client.timedelta_to_milliseconds(delay)
1584
/ 1000)))
2251
client.changedstate.wait(delay.total_seconds())
1585
2252
client.changedstate.release()
1586
2253
time2 = datetime.datetime.now()
1587
2254
if (time2 - time) >= delay:
1598
2265
else:
1599
2266
delay -= time2 - time
1600
2267
1601
sent_size = 0
1602
while sent_size < len(client.secret):
1603
try:
1604
sent = session.send(client.secret[sent_size:])
1605
except gnutls.errors.GNUTLSError as error:
1606
logger.warning("gnutls send failed")
1607
return
1608
logger.debug("Sent: %d, remaining: %d",
1609
sent, len(client.secret)
1610
- (sent_size + sent))
1611
sent_size += sent
2268
try:
2269
session.send(client.secret)
2270
except gnutls.Error as error:
2271
logger.warning("gnutls send failed",
2272
exc_info = error)
2273
return
1612
2274
1613
2275
logger.info("Sending secret to %s", client.name)
1614
2276
# bump the timeout using extended_timeout
1615
client.checked_ok(client.extended_timeout)
2277
client.bump_timeout(client.extended_timeout)
1616
2278
if self.server.use_dbus:
1617
2279
# Emit D-Bus signal
1618
2280
client.GotSecret()
1622
2284
client.approvals_pending -= 1
1623
2285
try:
1624
2286
session.bye()
1625
except gnutls.errors.GNUTLSError as error:
1626
logger.warning("GnuTLS bye failed")
2287
except gnutls.Error as error:
2288
logger.warning("GnuTLS bye failed",
2289
exc_info=error)
1627
2290
1628
2291
@staticmethod
1629
2292
def peer_certificate(session):
1630
2293
"Return the peer's OpenPGP certificate as a bytestring"
1631
2294
# If not an OpenPGP certificate...
1632
if (gnutls.library.functions
1633
.gnutls_certificate_type_get(session._c_object)
1634
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1635
# ...do the normal thing
1636
return session.peer_certificate
2295
if (gnutls.certificate_type_get(session._c_object)
2296
!= gnutls.CRT_OPENPGP):
2297
# ...return invalid data
2298
return b""
1637
2299
list_size = ctypes.c_uint(1)
1638
cert_list = (gnutls.library.functions
1639
.gnutls_certificate_get_peers
2300
cert_list = (gnutls.certificate_get_peers
1640
2301
(session._c_object, ctypes.byref(list_size)))
1641
2302
if not bool(cert_list) and list_size.value != 0:
1642
raise gnutls.errors.GNUTLSError("error getting peer"
1643
" certificate")
2303
raise gnutls.Error("error getting peer certificate")
1644
2304
if list_size.value == 0:
1645
2305
return None
1646
2306
cert = cert_list[0]
1650
2310
def fingerprint(openpgp):
1651
2311
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1652
2312
# New GnuTLS "datum" with the OpenPGP public key
1653
datum = (gnutls.library.types
1654
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1655
ctypes.POINTER
1656
(ctypes.c_ubyte)),
1657
ctypes.c_uint(len(openpgp))))
2313
datum = gnutls.datum_t(
2314
ctypes.cast(ctypes.c_char_p(openpgp),
2315
ctypes.POINTER(ctypes.c_ubyte)),
2316
ctypes.c_uint(len(openpgp)))
1658
2317
# New empty GnuTLS certificate
1659
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1660
(gnutls.library.functions
1661
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2318
crt = gnutls.openpgp_crt_t()
2319
gnutls.openpgp_crt_init(ctypes.byref(crt))
1662
2320
# Import the OpenPGP public key into the certificate
1663
(gnutls.library.functions
1664
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1665
gnutls.library.constants
1666
.GNUTLS_OPENPGP_FMT_RAW))
2321
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2322
gnutls.OPENPGP_FMT_RAW)
1667
2323
# Verify the self signature in the key
1668
2324
crtverify = ctypes.c_uint()
1669
(gnutls.library.functions
1670
.gnutls_openpgp_crt_verify_self(crt, 0,
1671
ctypes.byref(crtverify)))
2325
gnutls.openpgp_crt_verify_self(crt, 0,
2326
ctypes.byref(crtverify))
1672
2327
if crtverify.value != 0:
1673
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1674
raise (gnutls.errors.CertificateSecurityError
1675
("Verify failed"))
2328
gnutls.openpgp_crt_deinit(crt)
2329
raise gnutls.CertificateSecurityError("Verify failed")
1676
2330
# New buffer for the fingerprint
1677
2331
buf = ctypes.create_string_buffer(20)
1678
2332
buf_len = ctypes.c_size_t()
1679
2333
# Get the fingerprint from the certificate into the buffer
1680
(gnutls.library.functions
1681
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1682
ctypes.byref(buf_len)))
2334
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2335
ctypes.byref(buf_len))
1683
2336
# Deinit the certificate
1684
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2337
gnutls.openpgp_crt_deinit(crt)
1685
2338
# Convert the buffer to a Python bytestring
1686
2339
fpr = ctypes.string_at(buf, buf_len.value)
1687
2340
# Convert the bytestring to hexadecimal notation
1691
2344
1692
2345
class MultiprocessingMixIn(object):
1693
2346
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2347
1694
2348
def sub_process_main(self, request, address):
1695
2349
try:
1696
2350
self.finish_request(request, address)
1701
2355
def process_request(self, request, address):
1702
2356
"""Start a new process to process the request."""
1703
2357
proc = multiprocessing.Process(target = self.sub_process_main,
1704
args = (request,
1705
address))
2358
args = (request, address))
1706
2359
proc.start()
1707
2360
return proc
1708
2361
1709
2362
1710
2363
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1711
2364
""" adds a pipe to the MixIn """
2365
1712
2366
def process_request(self, request, client_address):
1713
2367
"""Overrides and wraps the original process_request().
1714
2368
1723
2377
1724
2378
def add_pipe(self, parent_pipe, proc):
1725
2379
"""Dummy function; override as necessary"""
1726
raise NotImplementedError
2380
raise NotImplementedError()
1727
2381
1728
2382
1729
2383
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1735
2389
interface: None or a network interface name (string)
1736
2390
use_ipv6: Boolean; to use IPv6 or not
1737
2391
"""
2392
1738
2393
def __init__(self, server_address, RequestHandlerClass,
1739
interface=None, use_ipv6=True):
2394
interface=None,
2395
use_ipv6=True,
2396
socketfd=None):
2397
"""If socketfd is set, use that file descriptor instead of
2398
creating a new one with socket.socket().
2399
"""
1740
2400
self.interface = interface
1741
2401
if use_ipv6:
1742
2402
self.address_family = socket.AF_INET6
2403
if socketfd is not None:
2404
# Save the file descriptor
2405
self.socketfd = socketfd
2406
# Save the original socket.socket() function
2407
self.socket_socket = socket.socket
2408
# To implement --socket, we monkey patch socket.socket.
2409
#
2410
# (When socketserver.TCPServer is a new-style class, we
2411
# could make self.socket into a property instead of monkey
2412
# patching socket.socket.)
2413
#
2414
# Create a one-time-only replacement for socket.socket()
2415
@functools.wraps(socket.socket)
2416
def socket_wrapper(*args, **kwargs):
2417
# Restore original function so subsequent calls are
2418
# not affected.
2419
socket.socket = self.socket_socket
2420
del self.socket_socket
2421
# This time only, return a new socket object from the
2422
# saved file descriptor.
2423
return socket.fromfd(self.socketfd, *args, **kwargs)
2424
# Replace socket.socket() function with wrapper
2425
socket.socket = socket_wrapper
2426
# The socketserver.TCPServer.__init__ will call
2427
# socket.socket(), which might be our replacement,
2428
# socket_wrapper(), if socketfd was set.
1743
2429
socketserver.TCPServer.__init__(self, server_address,
1744
2430
RequestHandlerClass)
2431
1745
2432
def server_bind(self):
1746
2433
"""This overrides the normal server_bind() function
1747
2434
to bind to an interface if one was specified, and also NOT to
1753
2440
self.interface)
1754
2441
else:
1755
2442
try:
1756
self.socket.setsockopt(socket.SOL_SOCKET,
1757
SO_BINDTODEVICE,
1758
str(self.interface
1759
+ '\0'))
2443
self.socket.setsockopt(
2444
socket.SOL_SOCKET, SO_BINDTODEVICE,
2445
(self.interface + "\0").encode("utf-8"))
1760
2446
except socket.error as error:
1761
if error[0] == errno.EPERM:
1762
logger.error("No permission to"
1763
" bind to interface %s",
1764
self.interface)
1765
elif error[0] == errno.ENOPROTOOPT:
2447
if error.errno == errno.EPERM:
2448
logger.error("No permission to bind to"
2449
" interface %s", self.interface)
2450
elif error.errno == errno.ENOPROTOOPT:
1766
2451
logger.error("SO_BINDTODEVICE not available;"
1767
2452
" cannot bind to interface %s",
1768
2453
self.interface)
2454
elif error.errno == errno.ENODEV:
2455
logger.error("Interface %s does not exist,"
2456
" cannot bind", self.interface)
1769
2457
else:
1770
2458
raise
1771
2459
# Only bind(2) the socket if we really need to.
1774
2462
if self.address_family == socket.AF_INET6:
1775
2463
any_address = "::" # in6addr_any
1776
2464
else:
1777
any_address = socket.INADDR_ANY
2465
any_address = "0.0.0.0" # INADDR_ANY
1778
2466
self.server_address = (any_address,
1779
2467
self.server_address[1])
1780
2468
elif not self.server_address[1]:
1781
self.server_address = (self.server_address[0],
1782
0)
2469
self.server_address = (self.server_address[0], 0)
1783
2470
# if self.interface:
1784
2471
# self.server_address = (self.server_address[0],
1785
2472
# 0, # port
1797
2484
gnutls_priority GnuTLS priority string
1798
2485
use_dbus: Boolean; to emit D-Bus signals or not
1799
2486
1800
Assumes a gobject.MainLoop event loop.
2487
Assumes a GLib.MainLoop event loop.
1801
2488
"""
2489
1802
2490
def __init__(self, server_address, RequestHandlerClass,
1803
interface=None, use_ipv6=True, clients=None,
1804
gnutls_priority=None, use_dbus=True):
2491
interface=None,
2492
use_ipv6=True,
2493
clients=None,
2494
gnutls_priority=None,
2495
use_dbus=True,
2496
socketfd=None):
1805
2497
self.enabled = False
1806
2498
self.clients = clients
1807
2499
if self.clients is None:
1811
2503
IPv6_TCPServer.__init__(self, server_address,
1812
2504
RequestHandlerClass,
1813
2505
interface = interface,
1814
use_ipv6 = use_ipv6)
2506
use_ipv6 = use_ipv6,
2507
socketfd = socketfd)
2508
1815
2509
def server_activate(self):
1816
2510
if self.enabled:
1817
2511
return socketserver.TCPServer.server_activate(self)
1821
2515
1822
2516
def add_pipe(self, parent_pipe, proc):
1823
2517
# Call "handle_ipc" for both data and EOF events
1824
gobject.io_add_watch(parent_pipe.fileno(),
1825
gobject.IO_IN | gobject.IO_HUP,
1826
functools.partial(self.handle_ipc,
1827
parent_pipe =
1828
parent_pipe,
1829
proc = proc))
2518
GLib.io_add_watch(
2519
parent_pipe.fileno(),
2520
GLib.IO_IN | GLib.IO_HUP,
2521
functools.partial(self.handle_ipc,
2522
parent_pipe = parent_pipe,
2523
proc = proc))
1830
2524
1831
def handle_ipc(self, source, condition, parent_pipe=None,
1832
proc = None, client_object=None):
1833
condition_names = {
1834
gobject.IO_IN: "IN", # There is data to read.
1835
gobject.IO_OUT: "OUT", # Data can be written (without
1836
# blocking).
1837
gobject.IO_PRI: "PRI", # There is urgent data to read.
1838
gobject.IO_ERR: "ERR", # Error condition.
1839
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1840
# broken, usually for pipes and
1841
# sockets).
1842
}
1843
conditions_string = ' | '.join(name
1844
for cond, name in
1845
condition_names.iteritems()
1846
if cond & condition)
2525
def handle_ipc(self, source, condition,
2526
parent_pipe=None,
2527
proc = None,
2528
client_object=None):
1847
2529
# error, or the other end of multiprocessing.Pipe has closed
1848
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2530
if condition & (GLib.IO_ERR | GLib.IO_HUP):
1849
2531
# Wait for other process to exit
1850
2532
proc.join()
1851
2533
return False
1858
2540
fpr = request[1]
1859
2541
address = request[2]
1860
2542
1861
for c in self.clients.itervalues():
2543
for c in self.clients.values():
1862
2544
if c.fingerprint == fpr:
1863
2545
client = c
1864
2546
break
1872
2554
parent_pipe.send(False)
1873
2555
return False
1874
2556
1875
gobject.io_add_watch(parent_pipe.fileno(),
1876
gobject.IO_IN | gobject.IO_HUP,
1877
functools.partial(self.handle_ipc,
1878
parent_pipe =
1879
parent_pipe,
1880
proc = proc,
1881
client_object =
1882
client))
2557
GLib.io_add_watch(
2558
parent_pipe.fileno(),
2559
GLib.IO_IN | GLib.IO_HUP,
2560
functools.partial(self.handle_ipc,
2561
parent_pipe = parent_pipe,
2562
proc = proc,
2563
client_object = client))
1883
2564
parent_pipe.send(True)
1884
2565
# remove the old hook in favor of the new above hook on
1885
2566
# same fileno
1891
2572
1892
2573
parent_pipe.send(('data', getattr(client_object,
1893
2574
funcname)(*args,
1894
**kwargs)))
2575
**kwargs)))
1895
2576
1896
2577
if command == 'getattr':
1897
2578
attrname = request[1]
1898
if callable(client_object.__getattribute__(attrname)):
1899
parent_pipe.send(('function',))
2579
if isinstance(client_object.__getattribute__(attrname),
2580
collections.Callable):
2581
parent_pipe.send(('function', ))
1900
2582
else:
1901
parent_pipe.send(('data', client_object
1902
.__getattribute__(attrname)))
2583
parent_pipe.send((
2584
'data', client_object.__getattribute__(attrname)))
1903
2585
1904
2586
if command == 'setattr':
1905
2587
attrname = request[1]
1909
2591
return True
1910
2592
1911
2593
2594
def rfc3339_duration_to_delta(duration):
2595
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2596
2597
>>> rfc3339_duration_to_delta("P7D")
2598
datetime.timedelta(7)
2599
>>> rfc3339_duration_to_delta("PT60S")
2600
datetime.timedelta(0, 60)
2601
>>> rfc3339_duration_to_delta("PT60M")
2602
datetime.timedelta(0, 3600)
2603
>>> rfc3339_duration_to_delta("PT24H")
2604
datetime.timedelta(1)
2605
>>> rfc3339_duration_to_delta("P1W")
2606
datetime.timedelta(7)
2607
>>> rfc3339_duration_to_delta("PT5M30S")
2608
datetime.timedelta(0, 330)
2609
>>> rfc3339_duration_to_delta("P1DT3M20S")
2610
datetime.timedelta(1, 200)
2611
"""
2612
2613
# Parsing an RFC 3339 duration with regular expressions is not
2614
# possible - there would have to be multiple places for the same
2615
# values, like seconds. The current code, while more esoteric, is
2616
# cleaner without depending on a parsing library. If Python had a
2617
# built-in library for parsing we would use it, but we'd like to
2618
# avoid excessive use of external libraries.
2619
2620
# New type for defining tokens, syntax, and semantics all-in-one
2621
Token = collections.namedtuple("Token", (
2622
"regexp", # To match token; if "value" is not None, must have
2623
# a "group" containing digits
2624
"value", # datetime.timedelta or None
2625
"followers")) # Tokens valid after this token
2626
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2627
# the "duration" ABNF definition in RFC 3339, Appendix A.
2628
token_end = Token(re.compile(r"$"), None, frozenset())
2629
token_second = Token(re.compile(r"(\d+)S"),
2630
datetime.timedelta(seconds=1),
2631
frozenset((token_end, )))
2632
token_minute = Token(re.compile(r"(\d+)M"),
2633
datetime.timedelta(minutes=1),
2634
frozenset((token_second, token_end)))
2635
token_hour = Token(re.compile(r"(\d+)H"),
2636
datetime.timedelta(hours=1),
2637
frozenset((token_minute, token_end)))
2638
token_time = Token(re.compile(r"T"),
2639
None,
2640
frozenset((token_hour, token_minute,
2641
token_second)))
2642
token_day = Token(re.compile(r"(\d+)D"),
2643
datetime.timedelta(days=1),
2644
frozenset((token_time, token_end)))
2645
token_month = Token(re.compile(r"(\d+)M"),
2646
datetime.timedelta(weeks=4),
2647
frozenset((token_day, token_end)))
2648
token_year = Token(re.compile(r"(\d+)Y"),
2649
datetime.timedelta(weeks=52),
2650
frozenset((token_month, token_end)))
2651
token_week = Token(re.compile(r"(\d+)W"),
2652
datetime.timedelta(weeks=1),
2653
frozenset((token_end, )))
2654
token_duration = Token(re.compile(r"P"), None,
2655
frozenset((token_year, token_month,
2656
token_day, token_time,
2657
token_week)))
2658
# Define starting values
2659
value = datetime.timedelta() # Value so far
2660
found_token = None
2661
followers = frozenset((token_duration, )) # Following valid tokens
2662
s = duration # String left to parse
2663
# Loop until end token is found
2664
while found_token is not token_end:
2665
# Search for any currently valid tokens
2666
for token in followers:
2667
match = token.regexp.match(s)
2668
if match is not None:
2669
# Token found
2670
if token.value is not None:
2671
# Value found, parse digits
2672
factor = int(match.group(1), 10)
2673
# Add to value so far
2674
value += factor * token.value
2675
# Strip token from string
2676
s = token.regexp.sub("", s, 1)
2677
# Go to found token
2678
found_token = token
2679
# Set valid next tokens
2680
followers = found_token.followers
2681
break
2682
else:
2683
# No currently valid tokens were found
2684
raise ValueError("Invalid RFC 3339 duration: {!r}"
2685
.format(duration))
2686
# End token found
2687
return value
2688
2689
1912
2690
def string_to_delta(interval):
1913
2691
"""Parse a string and return a datetime.timedelta
1914
2692
1925
2703
>>> string_to_delta('5m 30s')
1926
2704
datetime.timedelta(0, 330)
1927
2705
"""
2706
2707
try:
2708
return rfc3339_duration_to_delta(interval)
2709
except ValueError:
2710
pass
2711
1928
2712
timevalue = datetime.timedelta(0)
1929
2713
for s in interval.split():
1930
2714
try:
1931
suffix = unicode(s[-1])
2715
suffix = s[-1]
1932
2716
value = int(s[:-1])
1933
2717
if suffix == "d":
1934
2718
delta = datetime.timedelta(value)
1941
2725
elif suffix == "w":
1942
2726
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1943
2727
else:
1944
raise ValueError("Unknown suffix %r" % suffix)
1945
except (ValueError, IndexError) as e:
2728
raise ValueError("Unknown suffix {!r}".format(suffix))
2729
except IndexError as e:
1946
2730
raise ValueError(*(e.args))
1947
2731
timevalue += delta
1948
2732
return timevalue
1961
2745
sys.exit()
1962
2746
if not noclose:
1963
2747
# Close all standard open file descriptors
1964
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2748
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1965
2749
if not stat.S_ISCHR(os.fstat(null).st_mode):
1966
2750
raise OSError(errno.ENODEV,
1967
"%s not a character device"
1968
% os.path.devnull)
2751
"{} not a character device"
2752
.format(os.devnull))
1969
2753
os.dup2(null, sys.stdin.fileno())
1970
2754
os.dup2(null, sys.stdout.fileno())
1971
2755
os.dup2(null, sys.stderr.fileno())
1980
2764
1981
2765
parser = argparse.ArgumentParser()
1982
2766
parser.add_argument("-v", "--version", action="version",
1983
version = "%%(prog)s %s" % version,
2767
version = "%(prog)s {}".format(version),
1984
2768
help="show version number and exit")
1985
2769
parser.add_argument("-i", "--interface", metavar="IF",
1986
2770
help="Bind to interface IF")
1992
2776
help="Run self-test")
1993
2777
parser.add_argument("--debug", action="store_true",
1994
2778
help="Debug mode; run in foreground and log"
1995
" to terminal")
2779
" to terminal", default=None)
1996
2780
parser.add_argument("--debuglevel", metavar="LEVEL",
1997
2781
help="Debug level for stdout output")
1998
2782
parser.add_argument("--priority", help="GnuTLS"
2005
2789
" files")
2006
2790
parser.add_argument("--no-dbus", action="store_false",
2007
2791
dest="use_dbus", help="Do not provide D-Bus"
2008
" system bus interface")
2792
" system bus interface", default=None)
2009
2793
parser.add_argument("--no-ipv6", action="store_false",
2010
dest="use_ipv6", help="Do not use IPv6")
2794
dest="use_ipv6", help="Do not use IPv6",
2795
default=None)
2011
2796
parser.add_argument("--no-restore", action="store_false",
2012
2797
dest="restore", help="Do not restore stored"
2013
" state")
2798
" state", default=None)
2799
parser.add_argument("--socket", type=int,
2800
help="Specify a file descriptor to a network"
2801
" socket to use instead of creating one")
2014
2802
parser.add_argument("--statedir", metavar="DIR",
2015
2803
help="Directory to save/restore state in")
2804
parser.add_argument("--foreground", action="store_true",
2805
help="Run in foreground", default=None)
2806
parser.add_argument("--no-zeroconf", action="store_false",
2807
dest="zeroconf", help="Do not use Zeroconf",
2808
default=None)
2016
2809
2017
2810
options = parser.parse_args()
2018
2811
2019
2812
if options.check:
2020
2813
import doctest
2021
doctest.testmod()
2022
sys.exit()
2814
fail_count, test_count = doctest.testmod()
2815
sys.exit(os.EX_OK if fail_count == 0 else 1)
2023
2816
2024
2817
# Default values for config file for server-global settings
2025
2818
server_defaults = { "interface": "",
2027
2820
"port": "",
2028
2821
"debug": "False",
2029
2822
"priority":
2030
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2823
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2824
":+SIGN-DSA-SHA256",
2031
2825
"servicename": "Mandos",
2032
2826
"use_dbus": "True",
2033
2827
"use_ipv6": "True",
2034
2828
"debuglevel": "",
2035
2829
"restore": "True",
2036
"statedir": "/var/lib/mandos"
2037
}
2830
"socket": "",
2831
"statedir": "/var/lib/mandos",
2832
"foreground": "False",
2833
"zeroconf": "True",
2834
}
2038
2835
2039
2836
# Parse config file for server-global settings
2040
2837
server_config = configparser.SafeConfigParser(server_defaults)
2041
2838
del server_defaults
2042
server_config.read(os.path.join(options.configdir,
2043
"mandos.conf"))
2839
server_config.read(os.path.join(options.configdir, "mandos.conf"))
2044
2840
# Convert the SafeConfigParser object to a dict
2045
2841
server_settings = server_config.defaults()
2046
2842
# Use the appropriate methods on the non-string config options
2047
for option in ("debug", "use_dbus", "use_ipv6"):
2843
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
2048
2844
server_settings[option] = server_config.getboolean("DEFAULT",
2049
2845
option)
2050
2846
if server_settings["port"]:
2051
2847
server_settings["port"] = server_config.getint("DEFAULT",
2052
2848
"port")
2849
if server_settings["socket"]:
2850
server_settings["socket"] = server_config.getint("DEFAULT",
2851
"socket")
2852
# Later, stdin will, and stdout and stderr might, be dup'ed
2853
# over with an opened os.devnull. But we don't want this to
2854
# happen with a supplied network socket.
2855
if 0 <= server_settings["socket"] <= 2:
2856
server_settings["socket"] = os.dup(server_settings
2857
["socket"])
2053
2858
del server_config
2054
2859
2055
2860
# Override the settings from the config file with command line
2056
2861
# options, if set.
2057
2862
for option in ("interface", "address", "port", "debug",
2058
"priority", "servicename", "configdir",
2059
"use_dbus", "use_ipv6", "debuglevel", "restore",
2060
"statedir"):
2863
"priority", "servicename", "configdir", "use_dbus",
2864
"use_ipv6", "debuglevel", "restore", "statedir",
2865
"socket", "foreground", "zeroconf"):
2061
2866
value = getattr(options, option)
2062
2867
if value is not None:
2063
2868
server_settings[option] = value
2064
2869
del options
2065
2870
# Force all strings to be unicode
2066
2871
for option in server_settings.keys():
2067
if type(server_settings[option]) is str:
2068
server_settings[option] = unicode(server_settings[option])
2872
if isinstance(server_settings[option], bytes):
2873
server_settings[option] = (server_settings[option]
2874
.decode("utf-8"))
2875
# Force all boolean options to be boolean
2876
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2877
"foreground", "zeroconf"):
2878
server_settings[option] = bool(server_settings[option])
2879
# Debug implies foreground
2880
if server_settings["debug"]:
2881
server_settings["foreground"] = True
2069
2882
# Now we have our good server settings in "server_settings"
2070
2883
2071
2884
##################################################################
2072
2885
2886
if (not server_settings["zeroconf"]
2887
and not (server_settings["port"]
2888
or server_settings["socket"] != "")):
2889
parser.error("Needs port or socket to work without Zeroconf")
2890
2073
2891
# For convenience
2074
2892
debug = server_settings["debug"]
2075
2893
debuglevel = server_settings["debuglevel"]
2077
2895
use_ipv6 = server_settings["use_ipv6"]
2078
2896
stored_state_path = os.path.join(server_settings["statedir"],
2079
2897
stored_state_file)
2898
foreground = server_settings["foreground"]
2899
zeroconf = server_settings["zeroconf"]
2080
2900
2081
2901
if debug:
2082
2902
initlogger(debug, logging.DEBUG)
2088
2908
initlogger(debug, level)
2089
2909
2090
2910
if server_settings["servicename"] != "Mandos":
2091
syslogger.setFormatter(logging.Formatter
2092
('Mandos (%s) [%%(process)d]:'
2093
' %%(levelname)s: %%(message)s'
2094
% server_settings["servicename"]))
2911
syslogger.setFormatter(
2912
logging.Formatter('Mandos ({}) [%(process)d]:'
2913
' %(levelname)s: %(message)s'.format(
2914
server_settings["servicename"])))
2095
2915
2096
2916
# Parse config file with clients
2097
client_config = configparser.SafeConfigParser(Client.client_defaults)
2917
client_config = configparser.SafeConfigParser(Client
2918
.client_defaults)
2098
2919
client_config.read(os.path.join(server_settings["configdir"],
2099
2920
"clients.conf"))
2100
2921
2101
2922
global mandos_dbus_service
2102
2923
mandos_dbus_service = None
2103
2924
2104
tcp_server = MandosServer((server_settings["address"],
2105
server_settings["port"]),
2106
ClientHandler,
2107
interface=(server_settings["interface"]
2108
or None),
2109
use_ipv6=use_ipv6,
2110
gnutls_priority=
2111
server_settings["priority"],
2112
use_dbus=use_dbus)
2113
if not debug:
2114
pidfilename = "/var/run/mandos.pid"
2925
socketfd = None
2926
if server_settings["socket"] != "":
2927
socketfd = server_settings["socket"]
2928
tcp_server = MandosServer(
2929
(server_settings["address"], server_settings["port"]),
2930
ClientHandler,
2931
interface=(server_settings["interface"] or None),
2932
use_ipv6=use_ipv6,
2933
gnutls_priority=server_settings["priority"],
2934
use_dbus=use_dbus,
2935
socketfd=socketfd)
2936
if not foreground:
2937
pidfilename = "/run/mandos.pid"
2938
if not os.path.isdir("/run/."):
2939
pidfilename = "/var/run/mandos.pid"
2940
pidfile = None
2115
2941
try:
2116
pidfile = open(pidfilename, "w")
2117
except IOError:
2118
logger.error("Could not open file %r", pidfilename)
2942
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2943
except IOError as e:
2944
logger.error("Could not open file %r", pidfilename,
2945
exc_info=e)
2119
2946
2120
try:
2121
uid = pwd.getpwnam("_mandos").pw_uid
2122
gid = pwd.getpwnam("_mandos").pw_gid
2123
except KeyError:
2947
for name, group in (("_mandos", "_mandos"),
2948
("mandos", "mandos"),
2949
("nobody", "nogroup")):
2124
2950
try:
2125
uid = pwd.getpwnam("mandos").pw_uid
2126
gid = pwd.getpwnam("mandos").pw_gid
2951
uid = pwd.getpwnam(name).pw_uid
2952
gid = pwd.getpwnam(group).pw_gid
2953
break
2127
2954
except KeyError:
2128
try:
2129
uid = pwd.getpwnam("nobody").pw_uid
2130
gid = pwd.getpwnam("nobody").pw_gid
2131
except KeyError:
2132
uid = 65534
2133
gid = 65534
2955
continue
2956
else:
2957
uid = 65534
2958
gid = 65534
2134
2959
try:
2135
2960
os.setgid(gid)
2136
2961
os.setuid(uid)
2962
if debug:
2963
logger.debug("Did setuid/setgid to {}:{}".format(uid,
2964
gid))
2137
2965
except OSError as error:
2138
if error[0] != errno.EPERM:
2139
raise error
2966
logger.warning("Failed to setuid/setgid to {}:{}: {}"
2967
.format(uid, gid, os.strerror(error.errno)))
2968
if error.errno != errno.EPERM:
2969
raise
2140
2970
2141
2971
if debug:
2142
2972
# Enable all possible GnuTLS debugging
2143
2973
2144
2974
# "Use a log level over 10 to enable all debugging options."
2145
2975
# - GnuTLS manual
2146
gnutls.library.functions.gnutls_global_set_log_level(11)
2976
gnutls.global_set_log_level(11)
2147
2977
2148
@gnutls.library.types.gnutls_log_func
2978
@gnutls.log_func
2149
2979
def debug_gnutls(level, string):
2150
2980
logger.debug("GnuTLS: %s", string[:-1])
2151
2981
2152
(gnutls.library.functions
2153
.gnutls_global_set_log_function(debug_gnutls))
2982
gnutls.global_set_log_function(debug_gnutls)
2154
2983
2155
2984
# Redirect stdin so all checkers get /dev/null
2156
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2985
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2157
2986
os.dup2(null, sys.stdin.fileno())
2158
2987
if null > 2:
2159
2988
os.close(null)
2160
2989
2161
2990
# Need to fork before connecting to D-Bus
2162
if not debug:
2991
if not foreground:
2163
2992
# Close all input and output, do double fork, etc.
2164
2993
daemon()
2165
2994
2166
gobject.threads_init()
2995
# multiprocessing will use threads, so before we use GLib we need
2996
# to inform GLib that threads will be used.
2997
GLib.threads_init()
2167
2998
2168
2999
global main_loop
2169
3000
# From the Avahi example code
2170
DBusGMainLoop(set_as_default=True )
2171
main_loop = gobject.MainLoop()
3001
DBusGMainLoop(set_as_default=True)
3002
main_loop = GLib.MainLoop()
2172
3003
bus = dbus.SystemBus()
2173
3004
# End of Avahi example code
2174
3005
if use_dbus:
2175
3006
try:
2176
3007
bus_name = dbus.service.BusName("se.recompile.Mandos",
2177
bus, do_not_queue=True)
2178
old_bus_name = (dbus.service.BusName
2179
("se.bsnet.fukt.Mandos", bus,
2180
do_not_queue=True))
2181
except dbus.exceptions.NameExistsException as e:
2182
logger.error(unicode(e) + ", disabling D-Bus")
3008
bus,
3009
do_not_queue=True)
3010
old_bus_name = dbus.service.BusName(
3011
"se.bsnet.fukt.Mandos", bus,
3012
do_not_queue=True)
3013
except dbus.exceptions.DBusException as e:
3014
logger.error("Disabling D-Bus:", exc_info=e)
2183
3015
use_dbus = False
2184
3016
server_settings["use_dbus"] = False
2185
3017
tcp_server.use_dbus = False
2186
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2187
service = AvahiServiceToSyslog(name =
2188
server_settings["servicename"],
2189
servicetype = "_mandos._tcp",
2190
protocol = protocol, bus = bus)
2191
if server_settings["interface"]:
2192
service.interface = (if_nametoindex
2193
(str(server_settings["interface"])))
3018
if zeroconf:
3019
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3020
service = AvahiServiceToSyslog(
3021
name = server_settings["servicename"],
3022
servicetype = "_mandos._tcp",
3023
protocol = protocol,
3024
bus = bus)
3025
if server_settings["interface"]:
3026
service.interface = if_nametoindex(
3027
server_settings["interface"].encode("utf-8"))
2194
3028
2195
3029
global multiprocessing_manager
2196
3030
multiprocessing_manager = multiprocessing.Manager()
2197
3031
2198
3032
client_class = Client
2199
3033
if use_dbus:
2200
client_class = functools.partial(ClientDBusTransitional,
2201
bus = bus)
3034
client_class = functools.partial(ClientDBus, bus = bus)
2202
3035
2203
3036
client_settings = Client.config_parser(client_config)
2204
3037
old_client_settings = {}
2205
3038
clients_data = {}
2206
3039
3040
# This is used to redirect stdout and stderr for checker processes
3041
global wnull
3042
wnull = open(os.devnull, "w") # A writable /dev/null
3043
# Only used if server is running in foreground but not in debug
3044
# mode
3045
if debug or not foreground:
3046
wnull.close()
3047
2207
3048
# Get client data and settings from last running state.
2208
3049
if server_settings["restore"]:
2209
3050
try:
2210
3051
with open(stored_state_path, "rb") as stored_state:
2211
clients_data, old_client_settings = (pickle.load
2212
(stored_state))
3052
if sys.version_info.major == 2:
3053
clients_data, old_client_settings = pickle.load(
3054
stored_state)
3055
else:
3056
bytes_clients_data, bytes_old_client_settings = (
3057
pickle.load(stored_state, encoding = "bytes"))
3058
### Fix bytes to strings
3059
## clients_data
3060
# .keys()
3061
clients_data = { (key.decode("utf-8")
3062
if isinstance(key, bytes)
3063
else key): value
3064
for key, value in
3065
bytes_clients_data.items() }
3066
del bytes_clients_data
3067
for key in clients_data:
3068
value = { (k.decode("utf-8")
3069
if isinstance(k, bytes) else k): v
3070
for k, v in
3071
clients_data[key].items() }
3072
clients_data[key] = value
3073
# .client_structure
3074
value["client_structure"] = [
3075
(s.decode("utf-8")
3076
if isinstance(s, bytes)
3077
else s) for s in
3078
value["client_structure"] ]
3079
# .name & .host
3080
for k in ("name", "host"):
3081
if isinstance(value[k], bytes):
3082
value[k] = value[k].decode("utf-8")
3083
## old_client_settings
3084
# .keys()
3085
old_client_settings = {
3086
(key.decode("utf-8")
3087
if isinstance(key, bytes)
3088
else key): value
3089
for key, value in
3090
bytes_old_client_settings.items() }
3091
del bytes_old_client_settings
3092
# .host
3093
for value in old_client_settings.values():
3094
if isinstance(value["host"], bytes):
3095
value["host"] = (value["host"]
3096
.decode("utf-8"))
2213
3097
os.remove(stored_state_path)
2214
3098
except IOError as e:
2215
logger.warning("Could not load persistent state: {0}"
2216
.format(e))
2217
if e.errno != errno.ENOENT:
3099
if e.errno == errno.ENOENT:
3100
logger.warning("Could not load persistent state:"
3101
" {}".format(os.strerror(e.errno)))
3102
else:
3103
logger.critical("Could not load persistent state:",
3104
exc_info=e)
2218
3105
raise
2219
3106
except EOFError as e:
2220
3107
logger.warning("Could not load persistent state: "
2221
"EOFError: {0}".format(e))
3108
"EOFError:",
3109
exc_info=e)
2222
3110
2223
3111
with PGPEngine() as pgp:
2224
for client_name, client in clients_data.iteritems():
3112
for client_name, client in clients_data.items():
3113
# Skip removed clients
3114
if client_name not in client_settings:
3115
continue
3116
2225
3117
# Decide which value to use after restoring saved state.
2226
3118
# We have three different values: Old config file,
2227
3119
# new config file, and saved state.
2232
3124
# For each value in new config, check if it
2233
3125
# differs from the old config value (Except for
2234
3126
# the "secret" attribute)
2235
if (name != "secret" and
2236
value != old_client_settings[client_name]
2237
[name]):
3127
if (name != "secret"
3128
and (value !=
3129
old_client_settings[client_name][name])):
2238
3130
client[name] = value
2239
3131
except KeyError:
2240
3132
pass
2241
3133
2242
3134
# Clients who has passed its expire date can still be
2243
# enabled if its last checker was successful. Clients
2244
# whose checker failed before we stored its state is
2245
# assumed to have failed all checkers during downtime.
3135
# enabled if its last checker was successful. A Client
3136
# whose checker succeeded before we stored its state is
3137
# assumed to have successfully run all checkers during
3138
# downtime.
2246
3139
if client["enabled"]:
2247
3140
if datetime.datetime.utcnow() >= client["expires"]:
2248
3141
if not client["last_checked_ok"]:
2249
3142
logger.warning(
2250
"disabling client {0} - Client never "
2251
"performed a successfull checker"
2252
.format(client["name"]))
3143
"disabling client {} - Client never "
3144
"performed a successful checker".format(
3145
client_name))
2253
3146
client["enabled"] = False
2254
3147
elif client["last_checker_status"] != 0:
2255
3148
logger.warning(
2256
"disabling client {0} - Client "
2257
"last checker failed with error code {1}"
2258
.format(client["name"],
2259
client["last_checker_status"]))
3149
"disabling client {} - Client last"
3150
" checker failed with error code"
3151
" {}".format(
3152
client_name,
3153
client["last_checker_status"]))
2260
3154
client["enabled"] = False
2261
3155
else:
2262
client["expires"] = (datetime.datetime
2263
.utcnow()
2264
+ client["timeout"])
2265
3156
client["expires"] = (
3157
datetime.datetime.utcnow()
3158
+ client["timeout"])
3159
logger.debug("Last checker succeeded,"
3160
" keeping {} enabled".format(
3161
client_name))
2266
3162
try:
2267
client["secret"] = (
2268
pgp.decrypt(client["encrypted_secret"],
2269
client_settings[client_name]
2270
["secret"]))
3163
client["secret"] = pgp.decrypt(
3164
client["encrypted_secret"],
3165
client_settings[client_name]["secret"])
2271
3166
except PGPError:
2272
3167
# If decryption fails, we use secret from new settings
2273
logger.debug("Failed to decrypt {0} old secret"
2274
.format(client_name))
2275
client["secret"] = (
2276
client_settings[client_name]["secret"])
2277
3168
logger.debug("Failed to decrypt {} old secret".format(
3169
client_name))
3170
client["secret"] = (client_settings[client_name]
3171
["secret"])
2278
3172
2279
3173
# Add/remove clients based on new changes made to config
2280
for client_name in set(old_client_settings) - set(client_settings):
3174
for client_name in (set(old_client_settings)
3175
- set(client_settings)):
2281
3176
del clients_data[client_name]
2282
for client_name in set(client_settings) - set(old_client_settings):
3177
for client_name in (set(client_settings)
3178
- set(old_client_settings)):
2283
3179
clients_data[client_name] = client_settings[client_name]
2284
2285
# Create clients all clients
2286
for client_name, client in clients_data.iteritems():
3180
3181
# Create all client objects
3182
for client_name, client in clients_data.items():
2287
3183
tcp_server.clients[client_name] = client_class(
2288
name = client_name, settings = client)
3184
name = client_name,
3185
settings = client,
3186
server_settings = server_settings)
2289
3187
2290
3188
if not tcp_server.clients:
2291
3189
logger.warning("No clients defined")
2292
2293
if not debug:
2294
try:
2295
with pidfile:
2296
pid = os.getpid()
2297
pidfile.write(str(pid) + "\n".encode("utf-8"))
2298
del pidfile
2299
except IOError:
2300
logger.error("Could not write to file %r with PID %d",
2301
pidfilename, pid)
2302
except NameError:
2303
# "pidfile" was never created
2304
pass
3190
3191
if not foreground:
3192
if pidfile is not None:
3193
pid = os.getpid()
3194
try:
3195
with pidfile:
3196
print(pid, file=pidfile)
3197
except IOError:
3198
logger.error("Could not write to file %r with PID %d",
3199
pidfilename, pid)
3200
del pidfile
2305
3201
del pidfilename
2306
signal.signal(signal.SIGINT, signal.SIG_IGN)
2307
3202
2308
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2309
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
3203
for termsig in (signal.SIGHUP, signal.SIGTERM):
3204
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3205
lambda: main_loop.quit() and False)
2310
3206
2311
3207
if use_dbus:
2312
class MandosDBusService(dbus.service.Object):
3208
3209
@alternate_dbus_interfaces(
3210
{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
3211
class MandosDBusService(DBusObjectWithObjectManager):
2313
3212
"""A D-Bus proxy object"""
3213
2314
3214
def __init__(self):
2315
3215
dbus.service.Object.__init__(self, bus, "/")
3216
2316
3217
_interface = "se.recompile.Mandos"
2317
3218
2318
3219
@dbus.service.signal(_interface, signature="o")
2325
3226
"D-Bus signal"
2326
3227
pass
2327
3228
3229
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3230
"true"})
2328
3231
@dbus.service.signal(_interface, signature="os")
2329
3232
def ClientRemoved(self, objpath, name):
2330
3233
"D-Bus signal"
2331
3234
pass
2332
3235
3236
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3237
"true"})
2333
3238
@dbus.service.method(_interface, out_signature="ao")
2334
3239
def GetAllClients(self):
2335
3240
"D-Bus method"
2336
return dbus.Array(c.dbus_object_path
2337
for c in
2338
tcp_server.clients.itervalues())
3241
return dbus.Array(c.dbus_object_path for c in
3242
tcp_server.clients.values())
2339
3243
3244
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3245
"true"})
2340
3246
@dbus.service.method(_interface,
2341
3247
out_signature="a{oa{sv}}")
2342
3248
def GetAllClientsWithProperties(self):
2343
3249
"D-Bus method"
2344
3250
return dbus.Dictionary(
2345
((c.dbus_object_path, c.GetAll(""))
2346
for c in tcp_server.clients.itervalues()),
3251
{ c.dbus_object_path: c.GetAll(
3252
"se.recompile.Mandos.Client")
3253
for c in tcp_server.clients.values() },
2347
3254
signature="oa{sv}")
2348
3255
2349
3256
@dbus.service.method(_interface, in_signature="o")
2350
3257
def RemoveClient(self, object_path):
2351
3258
"D-Bus method"
2352
for c in tcp_server.clients.itervalues():
3259
for c in tcp_server.clients.values():
2353
3260
if c.dbus_object_path == object_path:
2354
3261
del tcp_server.clients[c.name]
2355
3262
c.remove_from_connection()
2356
# Don't signal anything except ClientRemoved
3263
# Don't signal the disabling
2357
3264
c.disable(quiet=True)
2358
# Emit D-Bus signal
2359
self.ClientRemoved(object_path, c.name)
3265
# Emit D-Bus signal for removal
3266
self.client_removed_signal(c)
2360
3267
return
2361
3268
raise KeyError(object_path)
2362
3269
2363
3270
del _interface
3271
3272
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3273
out_signature = "a{oa{sa{sv}}}")
3274
def GetManagedObjects(self):
3275
"""D-Bus method"""
3276
return dbus.Dictionary(
3277
{ client.dbus_object_path:
3278
dbus.Dictionary(
3279
{ interface: client.GetAll(interface)
3280
for interface in
3281
client._get_all_interface_names()})
3282
for client in tcp_server.clients.values()})
3283
3284
def client_added_signal(self, client):
3285
"""Send the new standard signal and the old signal"""
3286
if use_dbus:
3287
# New standard signal
3288
self.InterfacesAdded(
3289
client.dbus_object_path,
3290
dbus.Dictionary(
3291
{ interface: client.GetAll(interface)
3292
for interface in
3293
client._get_all_interface_names()}))
3294
# Old signal
3295
self.ClientAdded(client.dbus_object_path)
3296
3297
def client_removed_signal(self, client):
3298
"""Send the new standard signal and the old signal"""
3299
if use_dbus:
3300
# New standard signal
3301
self.InterfacesRemoved(
3302
client.dbus_object_path,
3303
client._get_all_interface_names())
3304
# Old signal
3305
self.ClientRemoved(client.dbus_object_path,
3306
client.name)
2364
3307
2365
class MandosDBusServiceTransitional(MandosDBusService):
2366
__metaclass__ = AlternateDBusNamesMetaclass
2367
mandos_dbus_service = MandosDBusServiceTransitional()
3308
mandos_dbus_service = MandosDBusService()
2368
3309
2369
3310
def cleanup():
2370
3311
"Cleanup function; run on exit"
2371
service.cleanup()
3312
if zeroconf:
3313
service.cleanup()
2372
3314
2373
3315
multiprocessing.active_children()
3316
wnull.close()
2374
3317
if not (tcp_server.clients or client_settings):
2375
3318
return
2376
3319
2379
3322
# removed/edited, old secret will thus be unrecovable.
2380
3323
clients = {}
2381
3324
with PGPEngine() as pgp:
2382
for client in tcp_server.clients.itervalues():
3325
for client in tcp_server.clients.values():
2383
3326
key = client_settings[client.name]["secret"]
2384
3327
client.encrypted_secret = pgp.encrypt(client.secret,
2385
3328
key)
2387
3330
2388
3331
# A list of attributes that can not be pickled
2389
3332
# + secret.
2390
exclude = set(("bus", "changedstate", "secret",
2391
"checker"))
2392
for name, typ in (inspect.getmembers
2393
(dbus.service.Object)):
3333
exclude = { "bus", "changedstate", "secret",
3334
"checker", "server_settings" }
3335
for name, typ in inspect.getmembers(dbus.service
3336
.Object):
2394
3337
exclude.add(name)
2395
3338
2396
3339
client_dict["encrypted_secret"] = (client
2403
3346
del client_settings[client.name]["secret"]
2404
3347
2405
3348
try:
2406
tempfd, tempname = tempfile.mkstemp(suffix=".pickle",
2407
prefix="clients-",
2408
dir=os.path.dirname
2409
(stored_state_path))
2410
with os.fdopen(tempfd, "wb") as stored_state:
2411
pickle.dump((clients, client_settings), stored_state)
3349
with tempfile.NamedTemporaryFile(
3350
mode='wb',
3351
suffix=".pickle",
3352
prefix='clients-',
3353
dir=os.path.dirname(stored_state_path),
3354
delete=False) as stored_state:
3355
pickle.dump((clients, client_settings), stored_state,
3356
protocol = 2)
3357
tempname = stored_state.name
2412
3358
os.rename(tempname, stored_state_path)
2413
3359
except (IOError, OSError) as e:
2414
logger.warning("Could not save persistent state: {0}"
2415
.format(e))
2416
3360
if not debug:
2417
3361
try:
2418
3362
os.remove(tempname)
2419
3363
except NameError:
2420
3364
pass
2421
if e.errno not in set((errno.ENOENT, errno.EACCES,
2422
errno.EEXIST)):
2423
raise e
3365
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3366
logger.warning("Could not save persistent state: {}"
3367
.format(os.strerror(e.errno)))
3368
else:
3369
logger.warning("Could not save persistent state:",
3370
exc_info=e)
3371
raise
2424
3372
2425
3373
# Delete all clients, and settings from config
2426
3374
while tcp_server.clients:
2427
3375
name, client = tcp_server.clients.popitem()
2428
3376
if use_dbus:
2429
3377
client.remove_from_connection()
2430
# Don't signal anything except ClientRemoved
3378
# Don't signal the disabling
2431
3379
client.disable(quiet=True)
3380
# Emit D-Bus signal for removal
2432
3381
if use_dbus:
2433
# Emit D-Bus signal
2434
mandos_dbus_service.ClientRemoved(client
2435
.dbus_object_path,
2436
client.name)
3382
mandos_dbus_service.client_removed_signal(client)
2437
3383
client_settings.clear()
2438
3384
2439
3385
atexit.register(cleanup)
2440
3386
2441
for client in tcp_server.clients.itervalues():
3387
for client in tcp_server.clients.values():
2442
3388
if use_dbus:
2443
# Emit D-Bus signal
2444
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3389
# Emit D-Bus signal for adding
3390
mandos_dbus_service.client_added_signal(client)
2445
3391
# Need to initiate checking of clients
2446
3392
if client.enabled:
2447
3393
client.init_checker()
2450
3396
tcp_server.server_activate()
2451
3397
2452
3398
# Find out what port we got
2453
service.port = tcp_server.socket.getsockname()[1]
3399
if zeroconf:
3400
service.port = tcp_server.socket.getsockname()[1]
2454
3401
if use_ipv6:
2455
3402
logger.info("Now listening on address %r, port %d,"
2456
" flowinfo %d, scope_id %d"
2457
% tcp_server.socket.getsockname())
3403
" flowinfo %d, scope_id %d",
3404
*tcp_server.socket.getsockname())
2458
3405
else: # IPv4
2459
logger.info("Now listening on address %r, port %d"
2460
% tcp_server.socket.getsockname())
3406
logger.info("Now listening on address %r, port %d",
3407
*tcp_server.socket.getsockname())
2461
3408
2462
3409
#service.interface = tcp_server.socket.getsockname()[3]
2463
3410
2464
3411
try:
2465
# From the Avahi example code
2466
try:
2467
service.activate()
2468
except dbus.exceptions.DBusException as error:
2469
logger.critical("DBusException: %s", error)
2470
cleanup()
2471
sys.exit(1)
2472
# End of Avahi example code
3412
if zeroconf:
3413
# From the Avahi example code
3414
try:
3415
service.activate()
3416
except dbus.exceptions.DBusException as error:
3417
logger.critical("D-Bus Exception", exc_info=error)
3418
cleanup()
3419
sys.exit(1)
3420
# End of Avahi example code
2473
3421
2474
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2475
lambda *args, **kwargs:
2476
(tcp_server.handle_request
2477
(*args[2:], **kwargs) or True))
3422
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3423
lambda *args, **kwargs:
3424
(tcp_server.handle_request
3425
(*args[2:], **kwargs) or True))
2478
3426
2479
3427
logger.debug("Starting main loop")
2480
3428
main_loop.run()
2481
3429
except AvahiError as error:
2482
logger.critical("AvahiError: %s", error)
3430
logger.critical("Avahi Error", exc_info=error)
2483
3431
cleanup()
2484
3432
sys.exit(1)
2485
3433
except KeyboardInterrupt:
2490
3438
# Must run before the D-Bus bus name gets deregistered
2491
3439
cleanup()
2492
3440
3441
2493
3442
if __name__ == '__main__':
2494
3443
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0