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- Committer: Teddy Hogeborn
- Date: 2016-10-29 13:44:49 UTC
- mto: (237.7.594 trunk)
- mto: This revision was merged to the branch mainline in revision 356.
- Revision ID: teddy@recompile.se-20161029134449-imf8eidhzwfnax9w
mandos: Use "self" instead of class name "GnuTLS" in __init__.
* mandos (GnuTLS.__init__): Use "self" instead of class name "GnuTLS".
* mandos (GnuTLS.__init__): Use "self" instead of class name "GnuTLS".
- files added:
- DBUS-API
- debian/source
- debian/upstream
- network-hooks.d
- plugin-helpers
- files modified:
- .bzrignore
added
removed
mandos
1
1
#!/usr/bin/python
2
2
# -*- mode: python; coding: utf-8 -*-
3
#
3
#
4
4
# Mandos server - give out binary blobs to connecting clients.
5
#
5
#
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# This program is partly derived from an example program for an Avahi
7
7
# service publisher, downloaded from
8
8
# <http://avahi.org/wiki/PythonPublishExample>. This includes the
9
9
# methods "add", "remove", "server_state_changed",
10
10
# "entry_group_state_changed", "cleanup", and "activate" in the
11
11
# "AvahiService" class, and some lines in "main".
12
#
12
#
13
13
# Everything else is
14
# Copyright © 2008,2009 Teddy Hogeborn
15
# Copyright © 2008,2009 Björn Påhlsson
16
#
14
# Copyright © 2008-2016 Teddy Hogeborn
15
# Copyright © 2008-2016 Björn Påhlsson
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
19
19
# the Free Software Foundation, either version 3 of the License, or
23
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
24
24
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25
25
# GNU General Public License for more details.
26
#
26
#
27
27
# You should have received a copy of the GNU General Public License
28
28
# along with this program. If not, see
29
29
# <http://www.gnu.org/licenses/>.
30
#
31
# Contact the authors at <mandos@fukt.bsnet.se>.
32
#
33
34
from __future__ import division, with_statement, absolute_import
35
36
import SocketServer as socketserver
30
#
31
# Contact the authors at <mandos@recompile.se>.
32
#
33
34
from __future__ import (division, absolute_import, print_function,
35
unicode_literals)
36
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
37
46
import socket
38
import optparse
47
import argparse
39
48
import datetime
40
49
import errno
41
import gnutls.crypto
42
import gnutls.connection
43
import gnutls.errors
44
import gnutls.library.functions
45
import gnutls.library.constants
46
import gnutls.library.types
47
import ConfigParser as configparser
50
try:
51
import ConfigParser as configparser
52
except ImportError:
53
import configparser
48
54
import sys
49
55
import re
50
56
import os
59
65
import struct
60
66
import fcntl
61
67
import functools
62
import cPickle as pickle
63
import select
68
try:
69
import cPickle as pickle
70
except ImportError:
71
import pickle
72
import multiprocessing
73
import types
74
import binascii
75
import tempfile
76
import itertools
77
import collections
78
import codecs
64
79
65
80
import dbus
66
81
import dbus.service
67
import gobject
68
import avahi
82
from gi.repository import GLib
69
83
from dbus.mainloop.glib import DBusGMainLoop
70
84
import ctypes
71
85
import ctypes.util
72
86
import xml.dom.minidom
73
87
import inspect
74
88
89
# Try to find the value of SO_BINDTODEVICE:
75
90
try:
91
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
92
# newer, and it is also the most natural place for it:
76
93
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
77
94
except AttributeError:
78
95
try:
96
# This is where SO_BINDTODEVICE was up to and including Python
97
# 2.6, and also 3.2:
79
98
from IN import SO_BINDTODEVICE
80
99
except ImportError:
81
SO_BINDTODEVICE = None
82
83
84
version = "1.0.14"
85
86
logger = logging.Logger(u'mandos')
87
syslogger = (logging.handlers.SysLogHandler
88
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
89
address = "/dev/log"))
90
syslogger.setFormatter(logging.Formatter
91
(u'Mandos [%(process)d]: %(levelname)s:'
92
u' %(message)s'))
93
logger.addHandler(syslogger)
94
95
console = logging.StreamHandler()
96
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
97
u' %(levelname)s:'
98
u' %(message)s'))
99
logger.addHandler(console)
100
# In Python 2.7 it seems to have been removed entirely.
101
# Try running the C preprocessor:
102
try:
103
cc = subprocess.Popen(["cc", "--language=c", "-E",
104
"/dev/stdin"],
105
stdin=subprocess.PIPE,
106
stdout=subprocess.PIPE)
107
stdout = cc.communicate(
108
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
109
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
110
except (OSError, ValueError, IndexError):
111
# No value found
112
SO_BINDTODEVICE = None
113
114
if sys.version_info.major == 2:
115
str = unicode
116
117
version = "1.7.13"
118
stored_state_file = "clients.pickle"
119
120
logger = logging.getLogger()
121
syslogger = None
122
123
try:
124
if_nametoindex = ctypes.cdll.LoadLibrary(
125
ctypes.util.find_library("c")).if_nametoindex
126
except (OSError, AttributeError):
127
128
def if_nametoindex(interface):
129
"Get an interface index the hard way, i.e. using fcntl()"
130
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
131
with contextlib.closing(socket.socket()) as s:
132
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
133
struct.pack(b"16s16x", interface))
134
interface_index = struct.unpack("I", ifreq[16:20])[0]
135
return interface_index
136
137
138
def copy_function(func):
139
"""Make a copy of a function"""
140
if sys.version_info.major == 2:
141
return types.FunctionType(func.func_code,
142
func.func_globals,
143
func.func_name,
144
func.func_defaults,
145
func.func_closure)
146
else:
147
return types.FunctionType(func.__code__,
148
func.__globals__,
149
func.__name__,
150
func.__defaults__,
151
func.__closure__)
152
153
154
def initlogger(debug, level=logging.WARNING):
155
"""init logger and add loglevel"""
156
157
global syslogger
158
syslogger = (logging.handlers.SysLogHandler(
159
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
160
address="/dev/log"))
161
syslogger.setFormatter(logging.Formatter
162
('Mandos [%(process)d]: %(levelname)s:'
163
' %(message)s'))
164
logger.addHandler(syslogger)
165
166
if debug:
167
console = logging.StreamHandler()
168
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
169
' [%(process)d]:'
170
' %(levelname)s:'
171
' %(message)s'))
172
logger.addHandler(console)
173
logger.setLevel(level)
174
175
176
class PGPError(Exception):
177
"""Exception if encryption/decryption fails"""
178
pass
179
180
181
class PGPEngine(object):
182
"""A simple class for OpenPGP symmetric encryption & decryption"""
183
184
def __init__(self):
185
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
186
self.gpg = "gpg"
187
try:
188
output = subprocess.check_output(["gpgconf"])
189
for line in output.splitlines():
190
name, text, path = line.split(b":")
191
if name == "gpg":
192
self.gpg = path
193
break
194
except OSError as e:
195
if e.errno != errno.ENOENT:
196
raise
197
self.gnupgargs = ['--batch',
198
'--homedir', self.tempdir,
199
'--force-mdc',
200
'--quiet']
201
# Only GPG version 1 has the --no-use-agent option.
202
if self.gpg == "gpg" or self.gpg.endswith("/gpg"):
203
self.gnupgargs.append("--no-use-agent")
204
205
def __enter__(self):
206
return self
207
208
def __exit__(self, exc_type, exc_value, traceback):
209
self._cleanup()
210
return False
211
212
def __del__(self):
213
self._cleanup()
214
215
def _cleanup(self):
216
if self.tempdir is not None:
217
# Delete contents of tempdir
218
for root, dirs, files in os.walk(self.tempdir,
219
topdown=False):
220
for filename in files:
221
os.remove(os.path.join(root, filename))
222
for dirname in dirs:
223
os.rmdir(os.path.join(root, dirname))
224
# Remove tempdir
225
os.rmdir(self.tempdir)
226
self.tempdir = None
227
228
def password_encode(self, password):
229
# Passphrase can not be empty and can not contain newlines or
230
# NUL bytes. So we prefix it and hex encode it.
231
encoded = b"mandos" + binascii.hexlify(password)
232
if len(encoded) > 2048:
233
# GnuPG can't handle long passwords, so encode differently
234
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
235
.replace(b"\n", b"\\n")
236
.replace(b"\0", b"\\x00"))
237
return encoded
238
239
def encrypt(self, data, password):
240
passphrase = self.password_encode(password)
241
with tempfile.NamedTemporaryFile(
242
dir=self.tempdir) as passfile:
243
passfile.write(passphrase)
244
passfile.flush()
245
proc = subprocess.Popen([self.gpg, '--symmetric',
246
'--passphrase-file',
247
passfile.name]
248
+ self.gnupgargs,
249
stdin=subprocess.PIPE,
250
stdout=subprocess.PIPE,
251
stderr=subprocess.PIPE)
252
ciphertext, err = proc.communicate(input=data)
253
if proc.returncode != 0:
254
raise PGPError(err)
255
return ciphertext
256
257
def decrypt(self, data, password):
258
passphrase = self.password_encode(password)
259
with tempfile.NamedTemporaryFile(
260
dir=self.tempdir) as passfile:
261
passfile.write(passphrase)
262
passfile.flush()
263
proc = subprocess.Popen([self.gpg, '--decrypt',
264
'--passphrase-file',
265
passfile.name]
266
+ self.gnupgargs,
267
stdin=subprocess.PIPE,
268
stdout=subprocess.PIPE,
269
stderr=subprocess.PIPE)
270
decrypted_plaintext, err = proc.communicate(input=data)
271
if proc.returncode != 0:
272
raise PGPError(err)
273
return decrypted_plaintext
274
275
276
# Pretend that we have an Avahi module
277
class Avahi(object):
278
"""This isn't so much a class as it is a module-like namespace.
279
It is instantiated once, and simulates having an Avahi module."""
280
IF_UNSPEC = -1 # avahi-common/address.h
281
PROTO_UNSPEC = -1 # avahi-common/address.h
282
PROTO_INET = 0 # avahi-common/address.h
283
PROTO_INET6 = 1 # avahi-common/address.h
284
DBUS_NAME = "org.freedesktop.Avahi"
285
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
286
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
287
DBUS_PATH_SERVER = "/"
288
289
def string_array_to_txt_array(self, t):
290
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
291
for s in t), signature="ay")
292
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
293
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
294
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
295
SERVER_INVALID = 0 # avahi-common/defs.h
296
SERVER_REGISTERING = 1 # avahi-common/defs.h
297
SERVER_RUNNING = 2 # avahi-common/defs.h
298
SERVER_COLLISION = 3 # avahi-common/defs.h
299
SERVER_FAILURE = 4 # avahi-common/defs.h
300
avahi = Avahi()
301
100
302
101
303
class AvahiError(Exception):
102
304
def __init__(self, value, *args, **kwargs):
103
305
self.value = value
104
super(AvahiError, self).__init__(value, *args, **kwargs)
105
def __unicode__(self):
106
return unicode(repr(self.value))
306
return super(AvahiError, self).__init__(value, *args,
307
**kwargs)
308
107
309
108
310
class AvahiServiceError(AvahiError):
109
311
pass
110
312
313
111
314
class AvahiGroupError(AvahiError):
112
315
pass
113
316
114
317
115
318
class AvahiService(object):
116
319
"""An Avahi (Zeroconf) service.
117
320
118
321
Attributes:
119
322
interface: integer; avahi.IF_UNSPEC or an interface index.
120
323
Used to optionally bind to the specified interface.
121
name: string; Example: u'Mandos'
122
type: string; Example: u'_mandos._tcp'.
123
See <http://www.dns-sd.org/ServiceTypes.html>
324
name: string; Example: 'Mandos'
325
type: string; Example: '_mandos._tcp'.
326
See <https://www.iana.org/assignments/service-names-port-numbers>
124
327
port: integer; what port to announce
125
328
TXT: list of strings; TXT record for the service
126
329
domain: string; Domain to publish on, default to .local if empty.
132
335
server: D-Bus Server
133
336
bus: dbus.SystemBus()
134
337
"""
135
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
136
servicetype = None, port = None, TXT = None,
137
domain = u"", host = u"", max_renames = 32768,
138
protocol = avahi.PROTO_UNSPEC, bus = None):
338
339
def __init__(self,
340
interface=avahi.IF_UNSPEC,
341
name=None,
342
servicetype=None,
343
port=None,
344
TXT=None,
345
domain="",
346
host="",
347
max_renames=32768,
348
protocol=avahi.PROTO_UNSPEC,
349
bus=None):
139
350
self.interface = interface
140
351
self.name = name
141
352
self.type = servicetype
149
360
self.group = None # our entry group
150
361
self.server = None
151
362
self.bus = bus
152
def rename(self):
363
self.entry_group_state_changed_match = None
364
365
def rename(self, remove=True):
153
366
"""Derived from the Avahi example code"""
154
367
if self.rename_count >= self.max_renames:
155
logger.critical(u"No suitable Zeroconf service name found"
156
u" after %i retries, exiting.",
368
logger.critical("No suitable Zeroconf service name found"
369
" after %i retries, exiting.",
157
370
self.rename_count)
158
raise AvahiServiceError(u"Too many renames")
159
self.name = self.server.GetAlternativeServiceName(self.name)
160
logger.info(u"Changing Zeroconf service name to %r ...",
161
unicode(self.name))
162
syslogger.setFormatter(logging.Formatter
163
(u'Mandos (%s) [%%(process)d]:'
164
u' %%(levelname)s: %%(message)s'
165
% self.name))
166
self.remove()
167
self.add()
371
raise AvahiServiceError("Too many renames")
372
self.name = str(
373
self.server.GetAlternativeServiceName(self.name))
168
374
self.rename_count += 1
375
logger.info("Changing Zeroconf service name to %r ...",
376
self.name)
377
if remove:
378
self.remove()
379
try:
380
self.add()
381
except dbus.exceptions.DBusException as error:
382
if (error.get_dbus_name()
383
== "org.freedesktop.Avahi.CollisionError"):
384
logger.info("Local Zeroconf service name collision.")
385
return self.rename(remove=False)
386
else:
387
logger.critical("D-Bus Exception", exc_info=error)
388
self.cleanup()
389
os._exit(1)
390
169
391
def remove(self):
170
392
"""Derived from the Avahi example code"""
393
if self.entry_group_state_changed_match is not None:
394
self.entry_group_state_changed_match.remove()
395
self.entry_group_state_changed_match = None
171
396
if self.group is not None:
172
397
self.group.Reset()
398
173
399
def add(self):
174
400
"""Derived from the Avahi example code"""
401
self.remove()
175
402
if self.group is None:
176
403
self.group = dbus.Interface(
177
404
self.bus.get_object(avahi.DBUS_NAME,
178
405
self.server.EntryGroupNew()),
179
406
avahi.DBUS_INTERFACE_ENTRY_GROUP)
180
self.group.connect_to_signal('StateChanged',
181
self
182
.entry_group_state_changed)
183
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
407
self.entry_group_state_changed_match = (
408
self.group.connect_to_signal(
409
'StateChanged', self.entry_group_state_changed))
410
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
184
411
self.name, self.type)
185
412
self.group.AddService(
186
413
self.interface,
191
418
dbus.UInt16(self.port),
192
419
avahi.string_array_to_txt_array(self.TXT))
193
420
self.group.Commit()
421
194
422
def entry_group_state_changed(self, state, error):
195
423
"""Derived from the Avahi example code"""
196
logger.debug(u"Avahi entry group state change: %i", state)
197
424
logger.debug("Avahi entry group state change: %i", state)
425
198
426
if state == avahi.ENTRY_GROUP_ESTABLISHED:
199
logger.debug(u"Zeroconf service established.")
427
logger.debug("Zeroconf service established.")
200
428
elif state == avahi.ENTRY_GROUP_COLLISION:
201
logger.warning(u"Zeroconf service name collision.")
429
logger.info("Zeroconf service name collision.")
202
430
self.rename()
203
431
elif state == avahi.ENTRY_GROUP_FAILURE:
204
logger.critical(u"Avahi: Error in group state changed %s",
205
unicode(error))
206
raise AvahiGroupError(u"State changed: %s"
207
% unicode(error))
432
logger.critical("Avahi: Error in group state changed %s",
433
str(error))
434
raise AvahiGroupError("State changed: {!s}".format(error))
435
208
436
def cleanup(self):
209
437
"""Derived from the Avahi example code"""
210
438
if self.group is not None:
211
self.group.Free()
439
try:
440
self.group.Free()
441
except (dbus.exceptions.UnknownMethodException,
442
dbus.exceptions.DBusException):
443
pass
212
444
self.group = None
213
def server_state_changed(self, state):
445
self.remove()
446
447
def server_state_changed(self, state, error=None):
214
448
"""Derived from the Avahi example code"""
215
logger.debug(u"Avahi server state change: %i", state)
216
if state == avahi.SERVER_COLLISION:
217
logger.error(u"Zeroconf server name collision")
218
self.remove()
449
logger.debug("Avahi server state change: %i", state)
450
bad_states = {
451
avahi.SERVER_INVALID: "Zeroconf server invalid",
452
avahi.SERVER_REGISTERING: None,
453
avahi.SERVER_COLLISION: "Zeroconf server name collision",
454
avahi.SERVER_FAILURE: "Zeroconf server failure",
455
}
456
if state in bad_states:
457
if bad_states[state] is not None:
458
if error is None:
459
logger.error(bad_states[state])
460
else:
461
logger.error(bad_states[state] + ": %r", error)
462
self.cleanup()
219
463
elif state == avahi.SERVER_RUNNING:
220
self.add()
464
try:
465
self.add()
466
except dbus.exceptions.DBusException as error:
467
if (error.get_dbus_name()
468
== "org.freedesktop.Avahi.CollisionError"):
469
logger.info("Local Zeroconf service name"
470
" collision.")
471
return self.rename(remove=False)
472
else:
473
logger.critical("D-Bus Exception", exc_info=error)
474
self.cleanup()
475
os._exit(1)
476
else:
477
if error is None:
478
logger.debug("Unknown state: %r", state)
479
else:
480
logger.debug("Unknown state: %r: %r", state, error)
481
221
482
def activate(self):
222
483
"""Derived from the Avahi example code"""
223
484
if self.server is None:
224
485
self.server = dbus.Interface(
225
486
self.bus.get_object(avahi.DBUS_NAME,
226
avahi.DBUS_PATH_SERVER),
487
avahi.DBUS_PATH_SERVER,
488
follow_name_owner_changes=True),
227
489
avahi.DBUS_INTERFACE_SERVER)
228
self.server.connect_to_signal(u"StateChanged",
229
self.server_state_changed)
490
self.server.connect_to_signal("StateChanged",
491
self.server_state_changed)
230
492
self.server_state_changed(self.server.GetState())
231
493
232
494
495
class AvahiServiceToSyslog(AvahiService):
496
def rename(self, *args, **kwargs):
497
"""Add the new name to the syslog messages"""
498
ret = AvahiService.rename(self, *args, **kwargs)
499
syslogger.setFormatter(logging.Formatter(
500
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
501
.format(self.name)))
502
return ret
503
504
505
# Pretend that we have a GnuTLS module
506
class GnuTLS(object):
507
"""This isn't so much a class as it is a module-like namespace.
508
It is instantiated once, and simulates having a GnuTLS module."""
509
510
library = ctypes.util.find_library("gnutls")
511
if library is None:
512
library = ctypes.util.find_library("gnutls-deb0")
513
_library = ctypes.cdll.LoadLibrary(library)
514
del library
515
_need_version = b"3.3.0"
516
517
def __init__(self):
518
# Need to use "self" here, since this method is called before
519
# the assignment to the "gnutls" global variable happens.
520
if self.check_version(self._need_version) is None:
521
raise self.Error("Needs GnuTLS {} or later"
522
.format(self._need_version))
523
524
# Unless otherwise indicated, the constants and types below are
525
# all from the gnutls/gnutls.h C header file.
526
527
# Constants
528
E_SUCCESS = 0
529
E_INTERRUPTED = -52
530
E_AGAIN = -28
531
CRT_OPENPGP = 2
532
CLIENT = 2
533
SHUT_RDWR = 0
534
CRD_CERTIFICATE = 1
535
E_NO_CERTIFICATE_FOUND = -49
536
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
537
538
# Types
539
class session_int(ctypes.Structure):
540
_fields_ = []
541
session_t = ctypes.POINTER(session_int)
542
543
class certificate_credentials_st(ctypes.Structure):
544
_fields_ = []
545
certificate_credentials_t = ctypes.POINTER(
546
certificate_credentials_st)
547
certificate_type_t = ctypes.c_int
548
549
class datum_t(ctypes.Structure):
550
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
551
('size', ctypes.c_uint)]
552
553
class openpgp_crt_int(ctypes.Structure):
554
_fields_ = []
555
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
556
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
557
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
558
credentials_type_t = ctypes.c_int
559
transport_ptr_t = ctypes.c_void_p
560
close_request_t = ctypes.c_int
561
562
# Exceptions
563
class Error(Exception):
564
# We need to use the class name "GnuTLS" here, since this
565
# exception might be raised from within GnuTLS.__init__,
566
# which is called before the assignment to the "gnutls"
567
# global variable has happened.
568
def __init__(self, message=None, code=None, args=()):
569
# Default usage is by a message string, but if a return
570
# code is passed, convert it to a string with
571
# gnutls.strerror()
572
self.code = code
573
if message is None and code is not None:
574
message = GnuTLS.strerror(code)
575
return super(GnuTLS.Error, self).__init__(
576
message, *args)
577
578
class CertificateSecurityError(Error):
579
pass
580
581
# Classes
582
class Credentials(object):
583
def __init__(self):
584
self._c_object = gnutls.certificate_credentials_t()
585
gnutls.certificate_allocate_credentials(
586
ctypes.byref(self._c_object))
587
self.type = gnutls.CRD_CERTIFICATE
588
589
def __del__(self):
590
gnutls.certificate_free_credentials(self._c_object)
591
592
class ClientSession(object):
593
def __init__(self, socket, credentials=None):
594
self._c_object = gnutls.session_t()
595
gnutls.init(ctypes.byref(self._c_object), gnutls.CLIENT)
596
gnutls.set_default_priority(self._c_object)
597
gnutls.transport_set_ptr(self._c_object, socket.fileno())
598
gnutls.handshake_set_private_extensions(self._c_object,
599
True)
600
self.socket = socket
601
if credentials is None:
602
credentials = gnutls.Credentials()
603
gnutls.credentials_set(self._c_object, credentials.type,
604
ctypes.cast(credentials._c_object,
605
ctypes.c_void_p))
606
self.credentials = credentials
607
608
def __del__(self):
609
gnutls.deinit(self._c_object)
610
611
def handshake(self):
612
return gnutls.handshake(self._c_object)
613
614
def send(self, data):
615
data = bytes(data)
616
data_len = len(data)
617
while data_len > 0:
618
data_len -= gnutls.record_send(self._c_object,
619
data[-data_len:],
620
data_len)
621
622
def bye(self):
623
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
624
625
# Error handling functions
626
def _error_code(result):
627
"""A function to raise exceptions on errors, suitable
628
for the 'restype' attribute on ctypes functions"""
629
if result >= 0:
630
return result
631
if result == gnutls.E_NO_CERTIFICATE_FOUND:
632
raise gnutls.CertificateSecurityError(code=result)
633
raise gnutls.Error(code=result)
634
635
def _retry_on_error(result, func, arguments):
636
"""A function to retry on some errors, suitable
637
for the 'errcheck' attribute on ctypes functions"""
638
while result < 0:
639
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
640
return _error_code(result)
641
result = func(*arguments)
642
return result
643
644
# Unless otherwise indicated, the function declarations below are
645
# all from the gnutls/gnutls.h C header file.
646
647
# Functions
648
priority_set_direct = _library.gnutls_priority_set_direct
649
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
650
ctypes.POINTER(ctypes.c_char_p)]
651
priority_set_direct.restype = _error_code
652
653
init = _library.gnutls_init
654
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
655
init.restype = _error_code
656
657
set_default_priority = _library.gnutls_set_default_priority
658
set_default_priority.argtypes = [session_t]
659
set_default_priority.restype = _error_code
660
661
record_send = _library.gnutls_record_send
662
record_send.argtypes = [session_t, ctypes.c_void_p,
663
ctypes.c_size_t]
664
record_send.restype = ctypes.c_ssize_t
665
record_send.errcheck = _retry_on_error
666
667
certificate_allocate_credentials = (
668
_library.gnutls_certificate_allocate_credentials)
669
certificate_allocate_credentials.argtypes = [
670
ctypes.POINTER(certificate_credentials_t)]
671
certificate_allocate_credentials.restype = _error_code
672
673
certificate_free_credentials = (
674
_library.gnutls_certificate_free_credentials)
675
certificate_free_credentials.argtypes = [
676
certificate_credentials_t]
677
certificate_free_credentials.restype = None
678
679
handshake_set_private_extensions = (
680
_library.gnutls_handshake_set_private_extensions)
681
handshake_set_private_extensions.argtypes = [session_t,
682
ctypes.c_int]
683
handshake_set_private_extensions.restype = None
684
685
credentials_set = _library.gnutls_credentials_set
686
credentials_set.argtypes = [session_t, credentials_type_t,
687
ctypes.c_void_p]
688
credentials_set.restype = _error_code
689
690
strerror = _library.gnutls_strerror
691
strerror.argtypes = [ctypes.c_int]
692
strerror.restype = ctypes.c_char_p
693
694
certificate_type_get = _library.gnutls_certificate_type_get
695
certificate_type_get.argtypes = [session_t]
696
certificate_type_get.restype = _error_code
697
698
certificate_get_peers = _library.gnutls_certificate_get_peers
699
certificate_get_peers.argtypes = [session_t,
700
ctypes.POINTER(ctypes.c_uint)]
701
certificate_get_peers.restype = ctypes.POINTER(datum_t)
702
703
global_set_log_level = _library.gnutls_global_set_log_level
704
global_set_log_level.argtypes = [ctypes.c_int]
705
global_set_log_level.restype = None
706
707
global_set_log_function = _library.gnutls_global_set_log_function
708
global_set_log_function.argtypes = [log_func]
709
global_set_log_function.restype = None
710
711
deinit = _library.gnutls_deinit
712
deinit.argtypes = [session_t]
713
deinit.restype = None
714
715
handshake = _library.gnutls_handshake
716
handshake.argtypes = [session_t]
717
handshake.restype = _error_code
718
handshake.errcheck = _retry_on_error
719
720
transport_set_ptr = _library.gnutls_transport_set_ptr
721
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
722
transport_set_ptr.restype = None
723
724
bye = _library.gnutls_bye
725
bye.argtypes = [session_t, close_request_t]
726
bye.restype = _error_code
727
bye.errcheck = _retry_on_error
728
729
check_version = _library.gnutls_check_version
730
check_version.argtypes = [ctypes.c_char_p]
731
check_version.restype = ctypes.c_char_p
732
733
# All the function declarations below are from gnutls/openpgp.h
734
735
openpgp_crt_init = _library.gnutls_openpgp_crt_init
736
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
737
openpgp_crt_init.restype = _error_code
738
739
openpgp_crt_import = _library.gnutls_openpgp_crt_import
740
openpgp_crt_import.argtypes = [openpgp_crt_t,
741
ctypes.POINTER(datum_t),
742
openpgp_crt_fmt_t]
743
openpgp_crt_import.restype = _error_code
744
745
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
746
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
747
ctypes.POINTER(ctypes.c_uint)]
748
openpgp_crt_verify_self.restype = _error_code
749
750
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
751
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
752
openpgp_crt_deinit.restype = None
753
754
openpgp_crt_get_fingerprint = (
755
_library.gnutls_openpgp_crt_get_fingerprint)
756
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
757
ctypes.c_void_p,
758
ctypes.POINTER(
759
ctypes.c_size_t)]
760
openpgp_crt_get_fingerprint.restype = _error_code
761
762
# Remove non-public functions
763
del _error_code, _retry_on_error
764
# Create the global "gnutls" object, simulating a module
765
gnutls = GnuTLS()
766
767
768
def call_pipe(connection, # : multiprocessing.Connection
769
func, *args, **kwargs):
770
"""This function is meant to be called by multiprocessing.Process
771
772
This function runs func(*args, **kwargs), and writes the resulting
773
return value on the provided multiprocessing.Connection.
774
"""
775
connection.send(func(*args, **kwargs))
776
connection.close()
777
778
233
779
class Client(object):
234
780
"""A representation of a client host served by this server.
235
781
236
782
Attributes:
237
name: string; from the config file, used in log messages and
238
D-Bus identifiers
783
approved: bool(); 'None' if not yet approved/disapproved
784
approval_delay: datetime.timedelta(); Time to wait for approval
785
approval_duration: datetime.timedelta(); Duration of one approval
786
checker: subprocess.Popen(); a running checker process used
787
to see if the client lives.
788
'None' if no process is running.
789
checker_callback_tag: a GLib event source tag, or None
790
checker_command: string; External command which is run to check
791
if client lives. %() expansions are done at
792
runtime with vars(self) as dict, so that for
793
instance %(name)s can be used in the command.
794
checker_initiator_tag: a GLib event source tag, or None
795
created: datetime.datetime(); (UTC) object creation
796
client_structure: Object describing what attributes a client has
797
and is used for storing the client at exit
798
current_checker_command: string; current running checker_command
799
disable_initiator_tag: a GLib event source tag, or None
800
enabled: bool()
239
801
fingerprint: string (40 or 32 hexadecimal digits); used to
240
802
uniquely identify the client
241
secret: bytestring; sent verbatim (over TLS) to client
242
803
host: string; available for use by the checker command
243
created: datetime.datetime(); (UTC) object creation
244
last_enabled: datetime.datetime(); (UTC)
245
enabled: bool()
804
interval: datetime.timedelta(); How often to start a new checker
805
last_approval_request: datetime.datetime(); (UTC) or None
246
806
last_checked_ok: datetime.datetime(); (UTC) or None
807
last_checker_status: integer between 0 and 255 reflecting exit
808
status of last checker. -1 reflects crashed
809
checker, -2 means no checker completed yet.
810
last_checker_signal: The signal which killed the last checker, if
811
last_checker_status is -1
812
last_enabled: datetime.datetime(); (UTC) or None
813
name: string; from the config file, used in log messages and
814
D-Bus identifiers
815
secret: bytestring; sent verbatim (over TLS) to client
247
816
timeout: datetime.timedelta(); How long from last_checked_ok
248
817
until this client is disabled
249
interval: datetime.timedelta(); How often to start a new checker
250
disable_hook: If set, called by disable() as disable_hook(self)
251
checker: subprocess.Popen(); a running checker process used
252
to see if the client lives.
253
'None' if no process is running.
254
checker_initiator_tag: a gobject event source tag, or None
255
disable_initiator_tag: - '' -
256
checker_callback_tag: - '' -
257
checker_command: string; External command which is run to check if
258
client lives. %() expansions are done at
259
runtime with vars(self) as dict, so that for
260
instance %(name)s can be used in the command.
261
current_checker_command: string; current running checker_command
818
extended_timeout: extra long timeout when secret has been sent
819
runtime_expansions: Allowed attributes for runtime expansion.
820
expires: datetime.datetime(); time (UTC) when a client will be
821
disabled, or None
822
server_settings: The server_settings dict from main()
262
823
"""
263
824
825
runtime_expansions = ("approval_delay", "approval_duration",
826
"created", "enabled", "expires",
827
"fingerprint", "host", "interval",
828
"last_approval_request", "last_checked_ok",
829
"last_enabled", "name", "timeout")
830
client_defaults = {
831
"timeout": "PT5M",
832
"extended_timeout": "PT15M",
833
"interval": "PT2M",
834
"checker": "fping -q -- %%(host)s",
835
"host": "",
836
"approval_delay": "PT0S",
837
"approval_duration": "PT1S",
838
"approved_by_default": "True",
839
"enabled": "True",
840
}
841
264
842
@staticmethod
265
def _timedelta_to_milliseconds(td):
266
"Convert a datetime.timedelta() to milliseconds"
267
return ((td.days * 24 * 60 * 60 * 1000)
268
+ (td.seconds * 1000)
269
+ (td.microseconds // 1000))
270
271
def timeout_milliseconds(self):
272
"Return the 'timeout' attribute in milliseconds"
273
return self._timedelta_to_milliseconds(self.timeout)
274
275
def interval_milliseconds(self):
276
"Return the 'interval' attribute in milliseconds"
277
return self._timedelta_to_milliseconds(self.interval)
278
279
def __init__(self, name = None, disable_hook=None, config=None):
280
"""Note: the 'checker' key in 'config' sets the
281
'checker_command' attribute and *not* the 'checker'
282
attribute."""
843
def config_parser(config):
844
"""Construct a new dict of client settings of this form:
845
{ client_name: {setting_name: value, ...}, ...}
846
with exceptions for any special settings as defined above.
847
NOTE: Must be a pure function. Must return the same result
848
value given the same arguments.
849
"""
850
settings = {}
851
for client_name in config.sections():
852
section = dict(config.items(client_name))
853
client = settings[client_name] = {}
854
855
client["host"] = section["host"]
856
# Reformat values from string types to Python types
857
client["approved_by_default"] = config.getboolean(
858
client_name, "approved_by_default")
859
client["enabled"] = config.getboolean(client_name,
860
"enabled")
861
862
# Uppercase and remove spaces from fingerprint for later
863
# comparison purposes with return value from the
864
# fingerprint() function
865
client["fingerprint"] = (section["fingerprint"].upper()
866
.replace(" ", ""))
867
if "secret" in section:
868
client["secret"] = codecs.decode(section["secret"]
869
.encode("utf-8"),
870
"base64")
871
elif "secfile" in section:
872
with open(os.path.expanduser(os.path.expandvars
873
(section["secfile"])),
874
"rb") as secfile:
875
client["secret"] = secfile.read()
876
else:
877
raise TypeError("No secret or secfile for section {}"
878
.format(section))
879
client["timeout"] = string_to_delta(section["timeout"])
880
client["extended_timeout"] = string_to_delta(
881
section["extended_timeout"])
882
client["interval"] = string_to_delta(section["interval"])
883
client["approval_delay"] = string_to_delta(
884
section["approval_delay"])
885
client["approval_duration"] = string_to_delta(
886
section["approval_duration"])
887
client["checker_command"] = section["checker"]
888
client["last_approval_request"] = None
889
client["last_checked_ok"] = None
890
client["last_checker_status"] = -2
891
892
return settings
893
894
def __init__(self, settings, name=None, server_settings=None):
283
895
self.name = name
284
if config is None:
285
config = {}
286
logger.debug(u"Creating client %r", self.name)
287
# Uppercase and remove spaces from fingerprint for later
288
# comparison purposes with return value from the fingerprint()
289
# function
290
self.fingerprint = (config[u"fingerprint"].upper()
291
.replace(u" ", u""))
292
logger.debug(u" Fingerprint: %s", self.fingerprint)
293
if u"secret" in config:
294
self.secret = config[u"secret"].decode(u"base64")
295
elif u"secfile" in config:
296
with open(os.path.expanduser(os.path.expandvars
297
(config[u"secfile"])),
298
"rb") as secfile:
299
self.secret = secfile.read()
896
if server_settings is None:
897
server_settings = {}
898
self.server_settings = server_settings
899
# adding all client settings
900
for setting, value in settings.items():
901
setattr(self, setting, value)
902
903
if self.enabled:
904
if not hasattr(self, "last_enabled"):
905
self.last_enabled = datetime.datetime.utcnow()
906
if not hasattr(self, "expires"):
907
self.expires = (datetime.datetime.utcnow()
908
+ self.timeout)
300
909
else:
301
raise TypeError(u"No secret or secfile for client %s"
302
% self.name)
303
self.host = config.get(u"host", u"")
304
self.created = datetime.datetime.utcnow()
305
self.enabled = False
306
self.last_enabled = None
307
self.last_checked_ok = None
308
self.timeout = string_to_delta(config[u"timeout"])
309
self.interval = string_to_delta(config[u"interval"])
310
self.disable_hook = disable_hook
910
self.last_enabled = None
911
self.expires = None
912
913
logger.debug("Creating client %r", self.name)
914
logger.debug(" Fingerprint: %s", self.fingerprint)
915
self.created = settings.get("created",
916
datetime.datetime.utcnow())
917
918
# attributes specific for this server instance
311
919
self.checker = None
312
920
self.checker_initiator_tag = None
313
921
self.disable_initiator_tag = None
314
922
self.checker_callback_tag = None
315
self.checker_command = config[u"checker"]
316
923
self.current_checker_command = None
317
self.last_connect = None
318
924
self.approved = None
925
self.approvals_pending = 0
926
self.changedstate = multiprocessing_manager.Condition(
927
multiprocessing_manager.Lock())
928
self.client_structure = [attr
929
for attr in self.__dict__.keys()
930
if not attr.startswith("_")]
931
self.client_structure.append("client_structure")
932
933
for name, t in inspect.getmembers(
934
type(self), lambda obj: isinstance(obj, property)):
935
if not name.startswith("_"):
936
self.client_structure.append(name)
937
938
# Send notice to process children that client state has changed
939
def send_changedstate(self):
940
with self.changedstate:
941
self.changedstate.notify_all()
942
319
943
def enable(self):
320
944
"""Start this client's checker and timeout hooks"""
321
if getattr(self, u"enabled", False):
945
if getattr(self, "enabled", False):
322
946
# Already enabled
323
947
return
948
self.expires = datetime.datetime.utcnow() + self.timeout
949
self.enabled = True
324
950
self.last_enabled = datetime.datetime.utcnow()
951
self.init_checker()
952
self.send_changedstate()
953
954
def disable(self, quiet=True):
955
"""Disable this client."""
956
if not getattr(self, "enabled", False):
957
return False
958
if not quiet:
959
logger.info("Disabling client %s", self.name)
960
if getattr(self, "disable_initiator_tag", None) is not None:
961
GLib.source_remove(self.disable_initiator_tag)
962
self.disable_initiator_tag = None
963
self.expires = None
964
if getattr(self, "checker_initiator_tag", None) is not None:
965
GLib.source_remove(self.checker_initiator_tag)
966
self.checker_initiator_tag = None
967
self.stop_checker()
968
self.enabled = False
969
if not quiet:
970
self.send_changedstate()
971
# Do not run this again if called by a GLib.timeout_add
972
return False
973
974
def __del__(self):
975
self.disable()
976
977
def init_checker(self):
325
978
# Schedule a new checker to be started an 'interval' from now,
326
979
# and every interval from then on.
327
self.checker_initiator_tag = (gobject.timeout_add
328
(self.interval_milliseconds(),
329
self.start_checker))
980
if self.checker_initiator_tag is not None:
981
GLib.source_remove(self.checker_initiator_tag)
982
self.checker_initiator_tag = GLib.timeout_add(
983
int(self.interval.total_seconds() * 1000),
984
self.start_checker)
330
985
# Schedule a disable() when 'timeout' has passed
331
self.disable_initiator_tag = (gobject.timeout_add
332
(self.timeout_milliseconds(),
333
self.disable))
334
self.enabled = True
986
if self.disable_initiator_tag is not None:
987
GLib.source_remove(self.disable_initiator_tag)
988
self.disable_initiator_tag = GLib.timeout_add(
989
int(self.timeout.total_seconds() * 1000), self.disable)
335
990
# Also start a new checker *right now*.
336
991
self.start_checker()
337
338
def disable(self, quiet=True):
339
"""Disable this client."""
340
if not getattr(self, "enabled", False):
341
return False
342
if not quiet:
343
logger.info(u"Disabling client %s", self.name)
344
if getattr(self, u"disable_initiator_tag", False):
345
gobject.source_remove(self.disable_initiator_tag)
346
self.disable_initiator_tag = None
347
if getattr(self, u"checker_initiator_tag", False):
348
gobject.source_remove(self.checker_initiator_tag)
349
self.checker_initiator_tag = None
350
self.stop_checker()
351
if self.disable_hook:
352
self.disable_hook(self)
353
self.enabled = False
354
# Do not run this again if called by a gobject.timeout_add
355
return False
356
357
def __del__(self):
358
self.disable_hook = None
359
self.disable()
360
361
def checker_callback(self, pid, condition, command):
992
993
def checker_callback(self, source, condition, connection,
994
command):
362
995
"""The checker has completed, so take appropriate actions."""
363
996
self.checker_callback_tag = None
364
997
self.checker = None
365
if os.WIFEXITED(condition):
366
exitstatus = os.WEXITSTATUS(condition)
367
if exitstatus == 0:
368
logger.info(u"Checker for %(name)s succeeded",
998
# Read return code from connection (see call_pipe)
999
returncode = connection.recv()
1000
connection.close()
1001
1002
if returncode >= 0:
1003
self.last_checker_status = returncode
1004
self.last_checker_signal = None
1005
if self.last_checker_status == 0:
1006
logger.info("Checker for %(name)s succeeded",
369
1007
vars(self))
370
1008
self.checked_ok()
371
1009
else:
372
logger.info(u"Checker for %(name)s failed",
373
vars(self))
1010
logger.info("Checker for %(name)s failed", vars(self))
374
1011
else:
375
logger.warning(u"Checker for %(name)s crashed?",
1012
self.last_checker_status = -1
1013
self.last_checker_signal = -returncode
1014
logger.warning("Checker for %(name)s crashed?",
376
1015
vars(self))
377
1016
return False
1017
378
1018
def checked_ok(self):
379
"""Bump up the timeout for this client.
380
381
This should only be called when the client has been seen,
382
alive and well.
383
"""
1019
"""Assert that the client has been seen, alive and well."""
384
1020
self.last_checked_ok = datetime.datetime.utcnow()
385
gobject.source_remove(self.disable_initiator_tag)
386
self.disable_initiator_tag = (gobject.timeout_add
387
(self.timeout_milliseconds(),
388
self.disable))
389
1021
self.last_checker_status = 0
1022
self.last_checker_signal = None
1023
self.bump_timeout()
1024
1025
def bump_timeout(self, timeout=None):
1026
"""Bump up the timeout for this client."""
1027
if timeout is None:
1028
timeout = self.timeout
1029
if self.disable_initiator_tag is not None:
1030
GLib.source_remove(self.disable_initiator_tag)
1031
self.disable_initiator_tag = None
1032
if getattr(self, "enabled", False):
1033
self.disable_initiator_tag = GLib.timeout_add(
1034
int(timeout.total_seconds() * 1000), self.disable)
1035
self.expires = datetime.datetime.utcnow() + timeout
1036
1037
def need_approval(self):
1038
self.last_approval_request = datetime.datetime.utcnow()
1039
390
1040
def start_checker(self):
391
1041
"""Start a new checker subprocess if one is not running.
392
1042
393
1043
If a checker already exists, leave it running and do
394
1044
nothing."""
395
1045
# The reason for not killing a running checker is that if we
396
# did that, then if a checker (for some reason) started
397
# running slowly and taking more than 'interval' time, the
398
# client would inevitably timeout, since no checker would get
399
# a chance to run to completion. If we instead leave running
1046
# did that, and if a checker (for some reason) started running
1047
# slowly and taking more than 'interval' time, then the client
1048
# would inevitably timeout, since no checker would get a
1049
# chance to run to completion. If we instead leave running
400
1050
# checkers alone, the checker would have to take more time
401
1051
# than 'timeout' for the client to be disabled, which is as it
402
1052
# should be.
403
404
# If a checker exists, make sure it is not a zombie
405
try:
406
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
407
except (AttributeError, OSError), error:
408
if (isinstance(error, OSError)
409
and error.errno != errno.ECHILD):
410
raise error
411
else:
412
if pid:
413
logger.warning(u"Checker was a zombie")
414
gobject.source_remove(self.checker_callback_tag)
415
self.checker_callback(pid, status,
416
self.current_checker_command)
1053
1054
if self.checker is not None and not self.checker.is_alive():
1055
logger.warning("Checker was not alive; joining")
1056
self.checker.join()
1057
self.checker = None
417
1058
# Start a new checker if needed
418
1059
if self.checker is None:
1060
# Escape attributes for the shell
1061
escaped_attrs = {
1062
attr: re.escape(str(getattr(self, attr)))
1063
for attr in self.runtime_expansions}
419
1064
try:
420
# In case checker_command has exactly one % operator
421
command = self.checker_command % self.host
422
except TypeError:
423
# Escape attributes for the shell
424
escaped_attrs = dict((key,
425
re.escape(unicode(str(val),
426
errors=
427
u'replace')))
428
for key, val in
429
vars(self).iteritems())
430
try:
431
command = self.checker_command % escaped_attrs
432
except TypeError, error:
433
logger.error(u'Could not format string "%s":'
434
u' %s', self.checker_command, error)
435
return True # Try again later
1065
command = self.checker_command % escaped_attrs
1066
except TypeError as error:
1067
logger.error('Could not format string "%s"',
1068
self.checker_command,
1069
exc_info=error)
1070
return True # Try again later
436
1071
self.current_checker_command = command
437
try:
438
logger.info(u"Starting checker %r for %s",
439
command, self.name)
440
# We don't need to redirect stdout and stderr, since
441
# in normal mode, that is already done by daemon(),
442
# and in debug mode we don't want to. (Stdin is
443
# always replaced by /dev/null.)
444
self.checker = subprocess.Popen(command,
445
close_fds=True,
446
shell=True, cwd=u"/")
447
self.checker_callback_tag = (gobject.child_watch_add
448
(self.checker.pid,
449
self.checker_callback,
450
data=command))
451
# The checker may have completed before the gobject
452
# watch was added. Check for this.
453
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
454
if pid:
455
gobject.source_remove(self.checker_callback_tag)
456
self.checker_callback(pid, status, command)
457
except OSError, error:
458
logger.error(u"Failed to start subprocess: %s",
459
error)
460
# Re-run this periodically if run by gobject.timeout_add
1072
logger.info("Starting checker %r for %s", command,
1073
self.name)
1074
# We don't need to redirect stdout and stderr, since
1075
# in normal mode, that is already done by daemon(),
1076
# and in debug mode we don't want to. (Stdin is
1077
# always replaced by /dev/null.)
1078
# The exception is when not debugging but nevertheless
1079
# running in the foreground; use the previously
1080
# created wnull.
1081
popen_args = {"close_fds": True,
1082
"shell": True,
1083
"cwd": "/"}
1084
if (not self.server_settings["debug"]
1085
and self.server_settings["foreground"]):
1086
popen_args.update({"stdout": wnull,
1087
"stderr": wnull})
1088
pipe = multiprocessing.Pipe(duplex=False)
1089
self.checker = multiprocessing.Process(
1090
target=call_pipe,
1091
args=(pipe[1], subprocess.call, command),
1092
kwargs=popen_args)
1093
self.checker.start()
1094
self.checker_callback_tag = GLib.io_add_watch(
1095
pipe[0].fileno(), GLib.IO_IN,
1096
self.checker_callback, pipe[0], command)
1097
# Re-run this periodically if run by GLib.timeout_add
461
1098
return True
462
1099
463
1100
def stop_checker(self):
464
1101
"""Force the checker process, if any, to stop."""
465
1102
if self.checker_callback_tag:
466
gobject.source_remove(self.checker_callback_tag)
1103
GLib.source_remove(self.checker_callback_tag)
467
1104
self.checker_callback_tag = None
468
if getattr(self, u"checker", None) is None:
1105
if getattr(self, "checker", None) is None:
469
1106
return
470
logger.debug(u"Stopping checker for %(name)s", vars(self))
471
try:
472
os.kill(self.checker.pid, signal.SIGTERM)
473
#time.sleep(0.5)
474
#if self.checker.poll() is None:
475
# os.kill(self.checker.pid, signal.SIGKILL)
476
except OSError, error:
477
if error.errno != errno.ESRCH: # No such process
478
raise
1107
logger.debug("Stopping checker for %(name)s", vars(self))
1108
self.checker.terminate()
479
1109
self.checker = None
480
1110
481
1111
482
def dbus_service_property(dbus_interface, signature=u"v",
483
access=u"readwrite", byte_arrays=False):
1112
def dbus_service_property(dbus_interface,
1113
signature="v",
1114
access="readwrite",
1115
byte_arrays=False):
484
1116
"""Decorators for marking methods of a DBusObjectWithProperties to
485
1117
become properties on the D-Bus.
486
1118
487
1119
The decorated method will be called with no arguments by "Get"
488
1120
and with one argument by "Set".
489
1121
490
1122
The parameters, where they are supported, are the same as
491
1123
dbus.service.method, except there is only "signature", since the
492
1124
type from Get() and the type sent to Set() is the same.
493
1125
"""
494
1126
# Encoding deeply encoded byte arrays is not supported yet by the
495
1127
# "Set" method, so we fail early here:
496
if byte_arrays and signature != u"ay":
497
raise ValueError(u"Byte arrays not supported for non-'ay'"
498
u" signature %r" % signature)
1128
if byte_arrays and signature != "ay":
1129
raise ValueError("Byte arrays not supported for non-'ay'"
1130
" signature {!r}".format(signature))
1131
499
1132
def decorator(func):
500
1133
func._dbus_is_property = True
501
1134
func._dbus_interface = dbus_interface
502
1135
func._dbus_signature = signature
503
1136
func._dbus_access = access
504
1137
func._dbus_name = func.__name__
505
if func._dbus_name.endswith(u"_dbus_property"):
1138
if func._dbus_name.endswith("_dbus_property"):
506
1139
func._dbus_name = func._dbus_name[:-14]
507
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
508
return func
1140
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
1141
return func
1142
1143
return decorator
1144
1145
1146
def dbus_interface_annotations(dbus_interface):
1147
"""Decorator for marking functions returning interface annotations
1148
1149
Usage:
1150
1151
@dbus_interface_annotations("org.example.Interface")
1152
def _foo(self): # Function name does not matter
1153
return {"org.freedesktop.DBus.Deprecated": "true",
1154
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1155
"false"}
1156
"""
1157
1158
def decorator(func):
1159
func._dbus_is_interface = True
1160
func._dbus_interface = dbus_interface
1161
func._dbus_name = dbus_interface
1162
return func
1163
1164
return decorator
1165
1166
1167
def dbus_annotations(annotations):
1168
"""Decorator to annotate D-Bus methods, signals or properties
1169
Usage:
1170
1171
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1172
"org.freedesktop.DBus.Property."
1173
"EmitsChangedSignal": "false"})
1174
@dbus_service_property("org.example.Interface", signature="b",
1175
access="r")
1176
def Property_dbus_property(self):
1177
return dbus.Boolean(False)
1178
1179
See also the DBusObjectWithAnnotations class.
1180
"""
1181
1182
def decorator(func):
1183
func._dbus_annotations = annotations
1184
return func
1185
509
1186
return decorator
510
1187
511
1188
512
1189
class DBusPropertyException(dbus.exceptions.DBusException):
513
1190
"""A base class for D-Bus property-related exceptions
514
1191
"""
515
def __unicode__(self):
516
return unicode(str(self))
1192
pass
517
1193
518
1194
519
1195
class DBusPropertyAccessException(DBusPropertyException):
528
1204
pass
529
1205
530
1206
531
class DBusObjectWithProperties(dbus.service.Object):
1207
class DBusObjectWithAnnotations(dbus.service.Object):
1208
"""A D-Bus object with annotations.
1209
1210
Classes inheriting from this can use the dbus_annotations
1211
decorator to add annotations to methods or signals.
1212
"""
1213
1214
@staticmethod
1215
def _is_dbus_thing(thing):
1216
"""Returns a function testing if an attribute is a D-Bus thing
1217
1218
If called like _is_dbus_thing("method") it returns a function
1219
suitable for use as predicate to inspect.getmembers().
1220
"""
1221
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1222
False)
1223
1224
def _get_all_dbus_things(self, thing):
1225
"""Returns a generator of (name, attribute) pairs
1226
"""
1227
return ((getattr(athing.__get__(self), "_dbus_name", name),
1228
athing.__get__(self))
1229
for cls in self.__class__.__mro__
1230
for name, athing in
1231
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1232
1233
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1234
out_signature="s",
1235
path_keyword='object_path',
1236
connection_keyword='connection')
1237
def Introspect(self, object_path, connection):
1238
"""Overloading of standard D-Bus method.
1239
1240
Inserts annotation tags on methods and signals.
1241
"""
1242
xmlstring = dbus.service.Object.Introspect(self, object_path,
1243
connection)
1244
try:
1245
document = xml.dom.minidom.parseString(xmlstring)
1246
1247
for if_tag in document.getElementsByTagName("interface"):
1248
# Add annotation tags
1249
for typ in ("method", "signal"):
1250
for tag in if_tag.getElementsByTagName(typ):
1251
annots = dict()
1252
for name, prop in (self.
1253
_get_all_dbus_things(typ)):
1254
if (name == tag.getAttribute("name")
1255
and prop._dbus_interface
1256
== if_tag.getAttribute("name")):
1257
annots.update(getattr(
1258
prop, "_dbus_annotations", {}))
1259
for name, value in annots.items():
1260
ann_tag = document.createElement(
1261
"annotation")
1262
ann_tag.setAttribute("name", name)
1263
ann_tag.setAttribute("value", value)
1264
tag.appendChild(ann_tag)
1265
# Add interface annotation tags
1266
for annotation, value in dict(
1267
itertools.chain.from_iterable(
1268
annotations().items()
1269
for name, annotations
1270
in self._get_all_dbus_things("interface")
1271
if name == if_tag.getAttribute("name")
1272
)).items():
1273
ann_tag = document.createElement("annotation")
1274
ann_tag.setAttribute("name", annotation)
1275
ann_tag.setAttribute("value", value)
1276
if_tag.appendChild(ann_tag)
1277
# Fix argument name for the Introspect method itself
1278
if (if_tag.getAttribute("name")
1279
== dbus.INTROSPECTABLE_IFACE):
1280
for cn in if_tag.getElementsByTagName("method"):
1281
if cn.getAttribute("name") == "Introspect":
1282
for arg in cn.getElementsByTagName("arg"):
1283
if (arg.getAttribute("direction")
1284
== "out"):
1285
arg.setAttribute("name",
1286
"xml_data")
1287
xmlstring = document.toxml("utf-8")
1288
document.unlink()
1289
except (AttributeError, xml.dom.DOMException,
1290
xml.parsers.expat.ExpatError) as error:
1291
logger.error("Failed to override Introspection method",
1292
exc_info=error)
1293
return xmlstring
1294
1295
1296
class DBusObjectWithProperties(DBusObjectWithAnnotations):
532
1297
"""A D-Bus object with properties.
533
1298
534
1299
Classes inheriting from this can use the dbus_service_property
535
1300
decorator to expose methods as D-Bus properties. It exposes the
536
1301
standard Get(), Set(), and GetAll() methods on the D-Bus.
537
1302
"""
538
539
@staticmethod
540
def _is_dbus_property(obj):
541
return getattr(obj, u"_dbus_is_property", False)
542
543
def _get_all_dbus_properties(self):
544
"""Returns a generator of (name, attribute) pairs
545
"""
546
return ((prop._dbus_name, prop)
547
for name, prop in
548
inspect.getmembers(self, self._is_dbus_property))
549
1303
550
1304
def _get_dbus_property(self, interface_name, property_name):
551
1305
"""Returns a bound method if one exists which is a D-Bus
552
1306
property with the specified name and interface.
553
1307
"""
554
for name in (property_name,
555
property_name + u"_dbus_property"):
556
prop = getattr(self, name, None)
557
if (prop is None
558
or not self._is_dbus_property(prop)
559
or prop._dbus_name != property_name
560
or (interface_name and prop._dbus_interface
561
and interface_name != prop._dbus_interface)):
562
continue
563
return prop
1308
for cls in self.__class__.__mro__:
1309
for name, value in inspect.getmembers(
1310
cls, self._is_dbus_thing("property")):
1311
if (value._dbus_name == property_name
1312
and value._dbus_interface == interface_name):
1313
return value.__get__(self)
1314
564
1315
# No such property
565
raise DBusPropertyNotFound(self.dbus_object_path + u":"
566
+ interface_name + u"."
567
+ property_name)
568
569
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
570
out_signature=u"v")
1316
raise DBusPropertyNotFound("{}:{}.{}".format(
1317
self.dbus_object_path, interface_name, property_name))
1318
1319
@classmethod
1320
def _get_all_interface_names(cls):
1321
"""Get a sequence of all interfaces supported by an object"""
1322
return (name for name in set(getattr(getattr(x, attr),
1323
"_dbus_interface", None)
1324
for x in (inspect.getmro(cls))
1325
for attr in dir(x))
1326
if name is not None)
1327
1328
@dbus.service.method(dbus.PROPERTIES_IFACE,
1329
in_signature="ss",
1330
out_signature="v")
571
1331
def Get(self, interface_name, property_name):
572
1332
"""Standard D-Bus property Get() method, see D-Bus standard.
573
1333
"""
574
1334
prop = self._get_dbus_property(interface_name, property_name)
575
if prop._dbus_access == u"write":
1335
if prop._dbus_access == "write":
576
1336
raise DBusPropertyAccessException(property_name)
577
1337
value = prop()
578
if not hasattr(value, u"variant_level"):
1338
if not hasattr(value, "variant_level"):
579
1339
return value
580
1340
return type(value)(value, variant_level=value.variant_level+1)
581
582
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
1341
1342
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
583
1343
def Set(self, interface_name, property_name, value):
584
1344
"""Standard D-Bus property Set() method, see D-Bus standard.
585
1345
"""
586
1346
prop = self._get_dbus_property(interface_name, property_name)
587
if prop._dbus_access == u"read":
1347
if prop._dbus_access == "read":
588
1348
raise DBusPropertyAccessException(property_name)
589
if prop._dbus_get_args_options[u"byte_arrays"]:
1349
if prop._dbus_get_args_options["byte_arrays"]:
590
1350
# The byte_arrays option is not supported yet on
591
1351
# signatures other than "ay".
592
if prop._dbus_signature != u"ay":
593
raise ValueError
594
value = dbus.ByteArray(''.join(unichr(byte)
595
for byte in value))
1352
if prop._dbus_signature != "ay":
1353
raise ValueError("Byte arrays not supported for non-"
1354
"'ay' signature {!r}"
1355
.format(prop._dbus_signature))
1356
value = dbus.ByteArray(b''.join(chr(byte)
1357
for byte in value))
596
1358
prop(value)
597
598
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
599
out_signature=u"a{sv}")
1359
1360
@dbus.service.method(dbus.PROPERTIES_IFACE,
1361
in_signature="s",
1362
out_signature="a{sv}")
600
1363
def GetAll(self, interface_name):
601
1364
"""Standard D-Bus property GetAll() method, see D-Bus
602
1365
standard.
603
1366
604
1367
Note: Will not include properties with access="write".
605
1368
"""
606
all = {}
607
for name, prop in self._get_all_dbus_properties():
1369
properties = {}
1370
for name, prop in self._get_all_dbus_things("property"):
608
1371
if (interface_name
609
1372
and interface_name != prop._dbus_interface):
610
1373
# Interface non-empty but did not match
611
1374
continue
612
1375
# Ignore write-only properties
613
if prop._dbus_access == u"write":
1376
if prop._dbus_access == "write":
614
1377
continue
615
1378
value = prop()
616
if not hasattr(value, u"variant_level"):
617
all[name] = value
1379
if not hasattr(value, "variant_level"):
1380
properties[name] = value
618
1381
continue
619
all[name] = type(value)(value, variant_level=
620
value.variant_level+1)
621
return dbus.Dictionary(all, signature=u"sv")
622
1382
properties[name] = type(value)(
1383
value, variant_level=value.variant_level + 1)
1384
return dbus.Dictionary(properties, signature="sv")
1385
1386
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1387
def PropertiesChanged(self, interface_name, changed_properties,
1388
invalidated_properties):
1389
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1390
standard.
1391
"""
1392
pass
1393
623
1394
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
624
out_signature=u"s",
1395
out_signature="s",
625
1396
path_keyword='object_path',
626
1397
connection_keyword='connection')
627
1398
def Introspect(self, object_path, connection):
628
"""Standard D-Bus method, overloaded to insert property tags.
1399
"""Overloading of standard D-Bus method.
1400
1401
Inserts property tags and interface annotation tags.
629
1402
"""
630
xmlstring = dbus.service.Object.Introspect(self, object_path,
631
connection)
1403
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1404
object_path,
1405
connection)
632
1406
try:
633
1407
document = xml.dom.minidom.parseString(xmlstring)
1408
634
1409
def make_tag(document, name, prop):
635
e = document.createElement(u"property")
636
e.setAttribute(u"name", name)
637
e.setAttribute(u"type", prop._dbus_signature)
638
e.setAttribute(u"access", prop._dbus_access)
1410
e = document.createElement("property")
1411
e.setAttribute("name", name)
1412
e.setAttribute("type", prop._dbus_signature)
1413
e.setAttribute("access", prop._dbus_access)
639
1414
return e
640
for if_tag in document.getElementsByTagName(u"interface"):
1415
1416
for if_tag in document.getElementsByTagName("interface"):
1417
# Add property tags
641
1418
for tag in (make_tag(document, name, prop)
642
1419
for name, prop
643
in self._get_all_dbus_properties()
1420
in self._get_all_dbus_things("property")
644
1421
if prop._dbus_interface
645
== if_tag.getAttribute(u"name")):
1422
== if_tag.getAttribute("name")):
646
1423
if_tag.appendChild(tag)
1424
# Add annotation tags for properties
1425
for tag in if_tag.getElementsByTagName("property"):
1426
annots = dict()
1427
for name, prop in self._get_all_dbus_things(
1428
"property"):
1429
if (name == tag.getAttribute("name")
1430
and prop._dbus_interface
1431
== if_tag.getAttribute("name")):
1432
annots.update(getattr(
1433
prop, "_dbus_annotations", {}))
1434
for name, value in annots.items():
1435
ann_tag = document.createElement(
1436
"annotation")
1437
ann_tag.setAttribute("name", name)
1438
ann_tag.setAttribute("value", value)
1439
tag.appendChild(ann_tag)
647
1440
# Add the names to the return values for the
648
1441
# "org.freedesktop.DBus.Properties" methods
649
if (if_tag.getAttribute(u"name")
650
== u"org.freedesktop.DBus.Properties"):
651
for cn in if_tag.getElementsByTagName(u"method"):
652
if cn.getAttribute(u"name") == u"Get":
653
for arg in cn.getElementsByTagName(u"arg"):
654
if (arg.getAttribute(u"direction")
655
== u"out"):
656
arg.setAttribute(u"name", u"value")
657
elif cn.getAttribute(u"name") == u"GetAll":
658
for arg in cn.getElementsByTagName(u"arg"):
659
if (arg.getAttribute(u"direction")
660
== u"out"):
661
arg.setAttribute(u"name", u"props")
662
xmlstring = document.toxml(u"utf-8")
663
document.unlink()
664
except (AttributeError, xml.dom.DOMException,
665
xml.parsers.expat.ExpatError), error:
666
logger.error(u"Failed to override Introspection method",
667
error)
668
return xmlstring
669
670
1442
if (if_tag.getAttribute("name")
1443
== "org.freedesktop.DBus.Properties"):
1444
for cn in if_tag.getElementsByTagName("method"):
1445
if cn.getAttribute("name") == "Get":
1446
for arg in cn.getElementsByTagName("arg"):
1447
if (arg.getAttribute("direction")
1448
== "out"):
1449
arg.setAttribute("name", "value")
1450
elif cn.getAttribute("name") == "GetAll":
1451
for arg in cn.getElementsByTagName("arg"):
1452
if (arg.getAttribute("direction")
1453
== "out"):
1454
arg.setAttribute("name", "props")
1455
xmlstring = document.toxml("utf-8")
1456
document.unlink()
1457
except (AttributeError, xml.dom.DOMException,
1458
xml.parsers.expat.ExpatError) as error:
1459
logger.error("Failed to override Introspection method",
1460
exc_info=error)
1461
return xmlstring
1462
1463
try:
1464
dbus.OBJECT_MANAGER_IFACE
1465
except AttributeError:
1466
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1467
1468
1469
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1470
"""A D-Bus object with an ObjectManager.
1471
1472
Classes inheriting from this exposes the standard
1473
GetManagedObjects call and the InterfacesAdded and
1474
InterfacesRemoved signals on the standard
1475
"org.freedesktop.DBus.ObjectManager" interface.
1476
1477
Note: No signals are sent automatically; they must be sent
1478
manually.
1479
"""
1480
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1481
out_signature="a{oa{sa{sv}}}")
1482
def GetManagedObjects(self):
1483
"""This function must be overridden"""
1484
raise NotImplementedError()
1485
1486
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1487
signature="oa{sa{sv}}")
1488
def InterfacesAdded(self, object_path, interfaces_and_properties):
1489
pass
1490
1491
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1492
def InterfacesRemoved(self, object_path, interfaces):
1493
pass
1494
1495
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1496
out_signature="s",
1497
path_keyword='object_path',
1498
connection_keyword='connection')
1499
def Introspect(self, object_path, connection):
1500
"""Overloading of standard D-Bus method.
1501
1502
Override return argument name of GetManagedObjects to be
1503
"objpath_interfaces_and_properties"
1504
"""
1505
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1506
object_path,
1507
connection)
1508
try:
1509
document = xml.dom.minidom.parseString(xmlstring)
1510
1511
for if_tag in document.getElementsByTagName("interface"):
1512
# Fix argument name for the GetManagedObjects method
1513
if (if_tag.getAttribute("name")
1514
== dbus.OBJECT_MANAGER_IFACE):
1515
for cn in if_tag.getElementsByTagName("method"):
1516
if (cn.getAttribute("name")
1517
== "GetManagedObjects"):
1518
for arg in cn.getElementsByTagName("arg"):
1519
if (arg.getAttribute("direction")
1520
== "out"):
1521
arg.setAttribute(
1522
"name",
1523
"objpath_interfaces"
1524
"_and_properties")
1525
xmlstring = document.toxml("utf-8")
1526
document.unlink()
1527
except (AttributeError, xml.dom.DOMException,
1528
xml.parsers.expat.ExpatError) as error:
1529
logger.error("Failed to override Introspection method",
1530
exc_info=error)
1531
return xmlstring
1532
1533
1534
def datetime_to_dbus(dt, variant_level=0):
1535
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1536
if dt is None:
1537
return dbus.String("", variant_level=variant_level)
1538
return dbus.String(dt.isoformat(), variant_level=variant_level)
1539
1540
1541
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1542
"""A class decorator; applied to a subclass of
1543
dbus.service.Object, it will add alternate D-Bus attributes with
1544
interface names according to the "alt_interface_names" mapping.
1545
Usage:
1546
1547
@alternate_dbus_interfaces({"org.example.Interface":
1548
"net.example.AlternateInterface"})
1549
class SampleDBusObject(dbus.service.Object):
1550
@dbus.service.method("org.example.Interface")
1551
def SampleDBusMethod():
1552
pass
1553
1554
The above "SampleDBusMethod" on "SampleDBusObject" will be
1555
reachable via two interfaces: "org.example.Interface" and
1556
"net.example.AlternateInterface", the latter of which will have
1557
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1558
"true", unless "deprecate" is passed with a False value.
1559
1560
This works for methods and signals, and also for D-Bus properties
1561
(from DBusObjectWithProperties) and interfaces (from the
1562
dbus_interface_annotations decorator).
1563
"""
1564
1565
def wrapper(cls):
1566
for orig_interface_name, alt_interface_name in (
1567
alt_interface_names.items()):
1568
attr = {}
1569
interface_names = set()
1570
# Go though all attributes of the class
1571
for attrname, attribute in inspect.getmembers(cls):
1572
# Ignore non-D-Bus attributes, and D-Bus attributes
1573
# with the wrong interface name
1574
if (not hasattr(attribute, "_dbus_interface")
1575
or not attribute._dbus_interface.startswith(
1576
orig_interface_name)):
1577
continue
1578
# Create an alternate D-Bus interface name based on
1579
# the current name
1580
alt_interface = attribute._dbus_interface.replace(
1581
orig_interface_name, alt_interface_name)
1582
interface_names.add(alt_interface)
1583
# Is this a D-Bus signal?
1584
if getattr(attribute, "_dbus_is_signal", False):
1585
# Extract the original non-method undecorated
1586
# function by black magic
1587
if sys.version_info.major == 2:
1588
nonmethod_func = (dict(
1589
zip(attribute.func_code.co_freevars,
1590
attribute.__closure__))
1591
["func"].cell_contents)
1592
else:
1593
nonmethod_func = (dict(
1594
zip(attribute.__code__.co_freevars,
1595
attribute.__closure__))
1596
["func"].cell_contents)
1597
# Create a new, but exactly alike, function
1598
# object, and decorate it to be a new D-Bus signal
1599
# with the alternate D-Bus interface name
1600
new_function = copy_function(nonmethod_func)
1601
new_function = (dbus.service.signal(
1602
alt_interface,
1603
attribute._dbus_signature)(new_function))
1604
# Copy annotations, if any
1605
try:
1606
new_function._dbus_annotations = dict(
1607
attribute._dbus_annotations)
1608
except AttributeError:
1609
pass
1610
1611
# Define a creator of a function to call both the
1612
# original and alternate functions, so both the
1613
# original and alternate signals gets sent when
1614
# the function is called
1615
def fixscope(func1, func2):
1616
"""This function is a scope container to pass
1617
func1 and func2 to the "call_both" function
1618
outside of its arguments"""
1619
1620
@functools.wraps(func2)
1621
def call_both(*args, **kwargs):
1622
"""This function will emit two D-Bus
1623
signals by calling func1 and func2"""
1624
func1(*args, **kwargs)
1625
func2(*args, **kwargs)
1626
# Make wrapper function look like a D-Bus
1627
# signal
1628
for name, attr in inspect.getmembers(func2):
1629
if name.startswith("_dbus_"):
1630
setattr(call_both, name, attr)
1631
1632
return call_both
1633
# Create the "call_both" function and add it to
1634
# the class
1635
attr[attrname] = fixscope(attribute, new_function)
1636
# Is this a D-Bus method?
1637
elif getattr(attribute, "_dbus_is_method", False):
1638
# Create a new, but exactly alike, function
1639
# object. Decorate it to be a new D-Bus method
1640
# with the alternate D-Bus interface name. Add it
1641
# to the class.
1642
attr[attrname] = (
1643
dbus.service.method(
1644
alt_interface,
1645
attribute._dbus_in_signature,
1646
attribute._dbus_out_signature)
1647
(copy_function(attribute)))
1648
# Copy annotations, if any
1649
try:
1650
attr[attrname]._dbus_annotations = dict(
1651
attribute._dbus_annotations)
1652
except AttributeError:
1653
pass
1654
# Is this a D-Bus property?
1655
elif getattr(attribute, "_dbus_is_property", False):
1656
# Create a new, but exactly alike, function
1657
# object, and decorate it to be a new D-Bus
1658
# property with the alternate D-Bus interface
1659
# name. Add it to the class.
1660
attr[attrname] = (dbus_service_property(
1661
alt_interface, attribute._dbus_signature,
1662
attribute._dbus_access,
1663
attribute._dbus_get_args_options
1664
["byte_arrays"])
1665
(copy_function(attribute)))
1666
# Copy annotations, if any
1667
try:
1668
attr[attrname]._dbus_annotations = dict(
1669
attribute._dbus_annotations)
1670
except AttributeError:
1671
pass
1672
# Is this a D-Bus interface?
1673
elif getattr(attribute, "_dbus_is_interface", False):
1674
# Create a new, but exactly alike, function
1675
# object. Decorate it to be a new D-Bus interface
1676
# with the alternate D-Bus interface name. Add it
1677
# to the class.
1678
attr[attrname] = (
1679
dbus_interface_annotations(alt_interface)
1680
(copy_function(attribute)))
1681
if deprecate:
1682
# Deprecate all alternate interfaces
1683
iname = "_AlternateDBusNames_interface_annotation{}"
1684
for interface_name in interface_names:
1685
1686
@dbus_interface_annotations(interface_name)
1687
def func(self):
1688
return {"org.freedesktop.DBus.Deprecated":
1689
"true"}
1690
# Find an unused name
1691
for aname in (iname.format(i)
1692
for i in itertools.count()):
1693
if aname not in attr:
1694
attr[aname] = func
1695
break
1696
if interface_names:
1697
# Replace the class with a new subclass of it with
1698
# methods, signals, etc. as created above.
1699
if sys.version_info.major == 2:
1700
cls = type(b"{}Alternate".format(cls.__name__),
1701
(cls, ), attr)
1702
else:
1703
cls = type("{}Alternate".format(cls.__name__),
1704
(cls, ), attr)
1705
return cls
1706
1707
return wrapper
1708
1709
1710
@alternate_dbus_interfaces({"se.recompile.Mandos":
1711
"se.bsnet.fukt.Mandos"})
671
1712
class ClientDBus(Client, DBusObjectWithProperties):
672
1713
"""A Client class using D-Bus
673
1714
674
1715
Attributes:
675
1716
dbus_object_path: dbus.ObjectPath
676
1717
bus: dbus.SystemBus()
677
1718
"""
1719
1720
runtime_expansions = (Client.runtime_expansions
1721
+ ("dbus_object_path", ))
1722
1723
_interface = "se.recompile.Mandos.Client"
1724
678
1725
# dbus.service.Object doesn't use super(), so we can't either.
679
680
def __init__(self, bus = None, *args, **kwargs):
1726
1727
def __init__(self, bus=None, *args, **kwargs):
681
1728
self.bus = bus
682
1729
Client.__init__(self, *args, **kwargs)
683
1730
# Only now, when this client is initialized, can it show up on
684
1731
# the D-Bus
685
self.dbus_object_path = (dbus.ObjectPath
686
(u"/clients/"
687
+ self.name.replace(u".", u"_")))
1732
client_object_name = str(self.name).translate(
1733
{ord("."): ord("_"),
1734
ord("-"): ord("_")})
1735
self.dbus_object_path = dbus.ObjectPath(
1736
"/clients/" + client_object_name)
688
1737
DBusObjectWithProperties.__init__(self, self.bus,
689
1738
self.dbus_object_path)
690
691
@staticmethod
692
def _datetime_to_dbus(dt, variant_level=0):
693
"""Convert a UTC datetime.datetime() to a D-Bus type."""
694
return dbus.String(dt.isoformat(),
695
variant_level=variant_level)
696
697
def enable(self):
698
oldstate = getattr(self, u"enabled", False)
699
r = Client.enable(self)
700
if oldstate != self.enabled:
701
# Emit D-Bus signals
702
self.PropertyChanged(dbus.String(u"enabled"),
703
dbus.Boolean(True, variant_level=1))
704
self.PropertyChanged(
705
dbus.String(u"last_enabled"),
706
self._datetime_to_dbus(self.last_enabled,
707
variant_level=1))
708
return r
709
710
def disable(self, quiet = False):
711
oldstate = getattr(self, u"enabled", False)
712
r = Client.disable(self, quiet=quiet)
713
if not quiet and oldstate != self.enabled:
714
# Emit D-Bus signal
715
self.PropertyChanged(dbus.String(u"enabled"),
716
dbus.Boolean(False, variant_level=1))
717
return r
718
1739
1740
def notifychangeproperty(transform_func, dbus_name,
1741
type_func=lambda x: x,
1742
variant_level=1,
1743
invalidate_only=False,
1744
_interface=_interface):
1745
""" Modify a variable so that it's a property which announces
1746
its changes to DBus.
1747
1748
transform_fun: Function that takes a value and a variant_level
1749
and transforms it to a D-Bus type.
1750
dbus_name: D-Bus name of the variable
1751
type_func: Function that transform the value before sending it
1752
to the D-Bus. Default: no transform
1753
variant_level: D-Bus variant level. Default: 1
1754
"""
1755
attrname = "_{}".format(dbus_name)
1756
1757
def setter(self, value):
1758
if hasattr(self, "dbus_object_path"):
1759
if (not hasattr(self, attrname) or
1760
type_func(getattr(self, attrname, None))
1761
!= type_func(value)):
1762
if invalidate_only:
1763
self.PropertiesChanged(
1764
_interface, dbus.Dictionary(),
1765
dbus.Array((dbus_name, )))
1766
else:
1767
dbus_value = transform_func(
1768
type_func(value),
1769
variant_level=variant_level)
1770
self.PropertyChanged(dbus.String(dbus_name),
1771
dbus_value)
1772
self.PropertiesChanged(
1773
_interface,
1774
dbus.Dictionary({dbus.String(dbus_name):
1775
dbus_value}),
1776
dbus.Array())
1777
setattr(self, attrname, value)
1778
1779
return property(lambda self: getattr(self, attrname), setter)
1780
1781
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1782
approvals_pending = notifychangeproperty(dbus.Boolean,
1783
"ApprovalPending",
1784
type_func=bool)
1785
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1786
last_enabled = notifychangeproperty(datetime_to_dbus,
1787
"LastEnabled")
1788
checker = notifychangeproperty(
1789
dbus.Boolean, "CheckerRunning",
1790
type_func=lambda checker: checker is not None)
1791
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1792
"LastCheckedOK")
1793
last_checker_status = notifychangeproperty(dbus.Int16,
1794
"LastCheckerStatus")
1795
last_approval_request = notifychangeproperty(
1796
datetime_to_dbus, "LastApprovalRequest")
1797
approved_by_default = notifychangeproperty(dbus.Boolean,
1798
"ApprovedByDefault")
1799
approval_delay = notifychangeproperty(
1800
dbus.UInt64, "ApprovalDelay",
1801
type_func=lambda td: td.total_seconds() * 1000)
1802
approval_duration = notifychangeproperty(
1803
dbus.UInt64, "ApprovalDuration",
1804
type_func=lambda td: td.total_seconds() * 1000)
1805
host = notifychangeproperty(dbus.String, "Host")
1806
timeout = notifychangeproperty(
1807
dbus.UInt64, "Timeout",
1808
type_func=lambda td: td.total_seconds() * 1000)
1809
extended_timeout = notifychangeproperty(
1810
dbus.UInt64, "ExtendedTimeout",
1811
type_func=lambda td: td.total_seconds() * 1000)
1812
interval = notifychangeproperty(
1813
dbus.UInt64, "Interval",
1814
type_func=lambda td: td.total_seconds() * 1000)
1815
checker_command = notifychangeproperty(dbus.String, "Checker")
1816
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1817
invalidate_only=True)
1818
1819
del notifychangeproperty
1820
719
1821
def __del__(self, *args, **kwargs):
720
1822
try:
721
1823
self.remove_from_connection()
722
1824
except LookupError:
723
1825
pass
724
if hasattr(DBusObjectWithProperties, u"__del__"):
1826
if hasattr(DBusObjectWithProperties, "__del__"):
725
1827
DBusObjectWithProperties.__del__(self, *args, **kwargs)
726
1828
Client.__del__(self, *args, **kwargs)
727
728
def checker_callback(self, pid, condition, command,
729
*args, **kwargs):
730
self.checker_callback_tag = None
731
self.checker = None
732
# Emit D-Bus signal
733
self.PropertyChanged(dbus.String(u"checker_running"),
734
dbus.Boolean(False, variant_level=1))
735
if os.WIFEXITED(condition):
736
exitstatus = os.WEXITSTATUS(condition)
1829
1830
def checker_callback(self, source, condition,
1831
connection, command, *args, **kwargs):
1832
ret = Client.checker_callback(self, source, condition,
1833
connection, command, *args,
1834
**kwargs)
1835
exitstatus = self.last_checker_status
1836
if exitstatus >= 0:
737
1837
# Emit D-Bus signal
738
1838
self.CheckerCompleted(dbus.Int16(exitstatus),
739
dbus.Int64(condition),
1839
# This is specific to GNU libC
1840
dbus.Int64(exitstatus << 8),
740
1841
dbus.String(command))
741
1842
else:
742
1843
# Emit D-Bus signal
743
1844
self.CheckerCompleted(dbus.Int16(-1),
744
dbus.Int64(condition),
1845
dbus.Int64(
1846
# This is specific to GNU libC
1847
(exitstatus << 8)
1848
| self.last_checker_signal),
745
1849
dbus.String(command))
746
747
return Client.checker_callback(self, pid, condition, command,
748
*args, **kwargs)
749
750
def checked_ok(self, *args, **kwargs):
751
r = Client.checked_ok(self, *args, **kwargs)
752
# Emit D-Bus signal
753
self.PropertyChanged(
754
dbus.String(u"last_checked_ok"),
755
(self._datetime_to_dbus(self.last_checked_ok,
756
variant_level=1)))
757
return r
758
1850
return ret
1851
759
1852
def start_checker(self, *args, **kwargs):
760
old_checker = self.checker
761
if self.checker is not None:
762
old_checker_pid = self.checker.pid
763
else:
764
old_checker_pid = None
1853
old_checker_pid = getattr(self.checker, "pid", None)
765
1854
r = Client.start_checker(self, *args, **kwargs)
766
1855
# Only if new checker process was started
767
1856
if (self.checker is not None
768
1857
and old_checker_pid != self.checker.pid):
769
1858
# Emit D-Bus signal
770
1859
self.CheckerStarted(self.current_checker_command)
771
self.PropertyChanged(
772
dbus.String(u"checker_running"),
773
dbus.Boolean(True, variant_level=1))
774
return r
775
776
def stop_checker(self, *args, **kwargs):
777
old_checker = getattr(self, u"checker", None)
778
r = Client.stop_checker(self, *args, **kwargs)
779
if (old_checker is not None
780
and getattr(self, u"checker", None) is None):
781
self.PropertyChanged(dbus.String(u"checker_running"),
782
dbus.Boolean(False, variant_level=1))
783
return r
784
785
## D-Bus methods, signals & properties
786
_interface = u"se.bsnet.fukt.Mandos.Client"
787
788
## Signals
789
1860
return r
1861
1862
def _reset_approved(self):
1863
self.approved = None
1864
return False
1865
1866
def approve(self, value=True):
1867
self.approved = value
1868
GLib.timeout_add(int(self.approval_duration.total_seconds()
1869
* 1000), self._reset_approved)
1870
self.send_changedstate()
1871
1872
# D-Bus methods, signals & properties
1873
1874
# Interfaces
1875
1876
# Signals
1877
790
1878
# CheckerCompleted - signal
791
@dbus.service.signal(_interface, signature=u"nxs")
1879
@dbus.service.signal(_interface, signature="nxs")
792
1880
def CheckerCompleted(self, exitcode, waitstatus, command):
793
1881
"D-Bus signal"
794
1882
pass
795
1883
796
1884
# CheckerStarted - signal
797
@dbus.service.signal(_interface, signature=u"s")
1885
@dbus.service.signal(_interface, signature="s")
798
1886
def CheckerStarted(self, command):
799
1887
"D-Bus signal"
800
1888
pass
801
1889
802
1890
# PropertyChanged - signal
803
@dbus.service.signal(_interface, signature=u"sv")
1891
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1892
@dbus.service.signal(_interface, signature="sv")
804
1893
def PropertyChanged(self, property, value):
805
1894
"D-Bus signal"
806
1895
pass
807
1896
808
1897
# GotSecret - signal
809
1898
@dbus.service.signal(_interface)
810
1899
def GotSecret(self):
811
"D-Bus signal"
1900
"""D-Bus signal
1901
Is sent after a successful transfer of secret from the Mandos
1902
server to mandos-client
1903
"""
812
1904
pass
813
1905
814
1906
# Rejected - signal
815
@dbus.service.signal(_interface)
816
def Rejected(self):
1907
@dbus.service.signal(_interface, signature="s")
1908
def Rejected(self, reason):
817
1909
"D-Bus signal"
818
1910
pass
819
820
## Methods
821
1911
1912
# NeedApproval - signal
1913
@dbus.service.signal(_interface, signature="tb")
1914
def NeedApproval(self, timeout, default):
1915
"D-Bus signal"
1916
return self.need_approval()
1917
1918
# Methods
1919
1920
# Approve - method
1921
@dbus.service.method(_interface, in_signature="b")
1922
def Approve(self, value):
1923
self.approve(value)
1924
822
1925
# CheckedOK - method
823
1926
@dbus.service.method(_interface)
824
1927
def CheckedOK(self):
825
return self.checked_ok()
826
1928
self.checked_ok()
1929
827
1930
# Enable - method
1931
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
828
1932
@dbus.service.method(_interface)
829
1933
def Enable(self):
830
1934
"D-Bus method"
831
1935
self.enable()
832
1936
833
1937
# StartChecker - method
1938
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
834
1939
@dbus.service.method(_interface)
835
1940
def StartChecker(self):
836
1941
"D-Bus method"
837
1942
self.start_checker()
838
1943
839
1944
# Disable - method
1945
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
840
1946
@dbus.service.method(_interface)
841
1947
def Disable(self):
842
1948
"D-Bus method"
843
1949
self.disable()
844
1950
845
1951
# StopChecker - method
1952
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
846
1953
@dbus.service.method(_interface)
847
1954
def StopChecker(self):
848
1955
self.stop_checker()
849
850
## Properties
851
852
# name - property
853
@dbus_service_property(_interface, signature=u"s", access=u"read")
854
def name_dbus_property(self):
1956
1957
# Properties
1958
1959
# ApprovalPending - property
1960
@dbus_service_property(_interface, signature="b", access="read")
1961
def ApprovalPending_dbus_property(self):
1962
return dbus.Boolean(bool(self.approvals_pending))
1963
1964
# ApprovedByDefault - property
1965
@dbus_service_property(_interface,
1966
signature="b",
1967
access="readwrite")
1968
def ApprovedByDefault_dbus_property(self, value=None):
1969
if value is None: # get
1970
return dbus.Boolean(self.approved_by_default)
1971
self.approved_by_default = bool(value)
1972
1973
# ApprovalDelay - property
1974
@dbus_service_property(_interface,
1975
signature="t",
1976
access="readwrite")
1977
def ApprovalDelay_dbus_property(self, value=None):
1978
if value is None: # get
1979
return dbus.UInt64(self.approval_delay.total_seconds()
1980
* 1000)
1981
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1982
1983
# ApprovalDuration - property
1984
@dbus_service_property(_interface,
1985
signature="t",
1986
access="readwrite")
1987
def ApprovalDuration_dbus_property(self, value=None):
1988
if value is None: # get
1989
return dbus.UInt64(self.approval_duration.total_seconds()
1990
* 1000)
1991
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1992
1993
# Name - property
1994
@dbus_annotations(
1995
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1996
@dbus_service_property(_interface, signature="s", access="read")
1997
def Name_dbus_property(self):
855
1998
return dbus.String(self.name)
856
857
# fingerprint - property
858
@dbus_service_property(_interface, signature=u"s", access=u"read")
859
def fingerprint_dbus_property(self):
1999
2000
# Fingerprint - property
2001
@dbus_annotations(
2002
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2003
@dbus_service_property(_interface, signature="s", access="read")
2004
def Fingerprint_dbus_property(self):
860
2005
return dbus.String(self.fingerprint)
861
862
# host - property
863
@dbus_service_property(_interface, signature=u"s",
864
access=u"readwrite")
865
def host_dbus_property(self, value=None):
2006
2007
# Host - property
2008
@dbus_service_property(_interface,
2009
signature="s",
2010
access="readwrite")
2011
def Host_dbus_property(self, value=None):
866
2012
if value is None: # get
867
2013
return dbus.String(self.host)
868
self.host = value
869
# Emit D-Bus signal
870
self.PropertyChanged(dbus.String(u"host"),
871
dbus.String(value, variant_level=1))
872
873
# created - property
874
@dbus_service_property(_interface, signature=u"s", access=u"read")
875
def created_dbus_property(self):
876
return dbus.String(self._datetime_to_dbus(self.created))
877
878
# last_enabled - property
879
@dbus_service_property(_interface, signature=u"s", access=u"read")
880
def last_enabled_dbus_property(self):
881
if self.last_enabled is None:
882
return dbus.String(u"")
883
return dbus.String(self._datetime_to_dbus(self.last_enabled))
884
885
# enabled - property
886
@dbus_service_property(_interface, signature=u"b",
887
access=u"readwrite")
888
def enabled_dbus_property(self, value=None):
2014
self.host = str(value)
2015
2016
# Created - property
2017
@dbus_annotations(
2018
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2019
@dbus_service_property(_interface, signature="s", access="read")
2020
def Created_dbus_property(self):
2021
return datetime_to_dbus(self.created)
2022
2023
# LastEnabled - property
2024
@dbus_service_property(_interface, signature="s", access="read")
2025
def LastEnabled_dbus_property(self):
2026
return datetime_to_dbus(self.last_enabled)
2027
2028
# Enabled - property
2029
@dbus_service_property(_interface,
2030
signature="b",
2031
access="readwrite")
2032
def Enabled_dbus_property(self, value=None):
889
2033
if value is None: # get
890
2034
return dbus.Boolean(self.enabled)
891
2035
if value:
892
2036
self.enable()
893
2037
else:
894
2038
self.disable()
895
896
# last_checked_ok - property
897
@dbus_service_property(_interface, signature=u"s",
898
access=u"readwrite")
899
def last_checked_ok_dbus_property(self, value=None):
2039
2040
# LastCheckedOK - property
2041
@dbus_service_property(_interface,
2042
signature="s",
2043
access="readwrite")
2044
def LastCheckedOK_dbus_property(self, value=None):
900
2045
if value is not None:
901
2046
self.checked_ok()
902
2047
return
903
if self.last_checked_ok is None:
904
return dbus.String(u"")
905
return dbus.String(self._datetime_to_dbus(self
906
.last_checked_ok))
907
908
# timeout - property
909
@dbus_service_property(_interface, signature=u"t",
910
access=u"readwrite")
911
def timeout_dbus_property(self, value=None):
2048
return datetime_to_dbus(self.last_checked_ok)
2049
2050
# LastCheckerStatus - property
2051
@dbus_service_property(_interface, signature="n", access="read")
2052
def LastCheckerStatus_dbus_property(self):
2053
return dbus.Int16(self.last_checker_status)
2054
2055
# Expires - property
2056
@dbus_service_property(_interface, signature="s", access="read")
2057
def Expires_dbus_property(self):
2058
return datetime_to_dbus(self.expires)
2059
2060
# LastApprovalRequest - property
2061
@dbus_service_property(_interface, signature="s", access="read")
2062
def LastApprovalRequest_dbus_property(self):
2063
return datetime_to_dbus(self.last_approval_request)
2064
2065
# Timeout - property
2066
@dbus_service_property(_interface,
2067
signature="t",
2068
access="readwrite")
2069
def Timeout_dbus_property(self, value=None):
912
2070
if value is None: # get
913
return dbus.UInt64(self.timeout_milliseconds())
2071
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2072
old_timeout = self.timeout
914
2073
self.timeout = datetime.timedelta(0, 0, 0, value)
915
# Emit D-Bus signal
916
self.PropertyChanged(dbus.String(u"timeout"),
917
dbus.UInt64(value, variant_level=1))
918
if getattr(self, u"disable_initiator_tag", None) is None:
919
return
920
# Reschedule timeout
921
gobject.source_remove(self.disable_initiator_tag)
922
self.disable_initiator_tag = None
923
time_to_die = (self.
924
_timedelta_to_milliseconds((self
925
.last_checked_ok
926
+ self.timeout)
927
- datetime.datetime
928
.utcnow()))
929
if time_to_die <= 0:
930
# The timeout has passed
931
self.disable()
932
else:
933
self.disable_initiator_tag = (gobject.timeout_add
934
(time_to_die, self.disable))
935
936
# interval - property
937
@dbus_service_property(_interface, signature=u"t",
938
access=u"readwrite")
939
def interval_dbus_property(self, value=None):
940
if value is None: # get
941
return dbus.UInt64(self.interval_milliseconds())
2074
# Reschedule disabling
2075
if self.enabled:
2076
now = datetime.datetime.utcnow()
2077
self.expires += self.timeout - old_timeout
2078
if self.expires <= now:
2079
# The timeout has passed
2080
self.disable()
2081
else:
2082
if (getattr(self, "disable_initiator_tag", None)
2083
is None):
2084
return
2085
GLib.source_remove(self.disable_initiator_tag)
2086
self.disable_initiator_tag = GLib.timeout_add(
2087
int((self.expires - now).total_seconds() * 1000),
2088
self.disable)
2089
2090
# ExtendedTimeout - property
2091
@dbus_service_property(_interface,
2092
signature="t",
2093
access="readwrite")
2094
def ExtendedTimeout_dbus_property(self, value=None):
2095
if value is None: # get
2096
return dbus.UInt64(self.extended_timeout.total_seconds()
2097
* 1000)
2098
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2099
2100
# Interval - property
2101
@dbus_service_property(_interface,
2102
signature="t",
2103
access="readwrite")
2104
def Interval_dbus_property(self, value=None):
2105
if value is None: # get
2106
return dbus.UInt64(self.interval.total_seconds() * 1000)
942
2107
self.interval = datetime.timedelta(0, 0, 0, value)
943
# Emit D-Bus signal
944
self.PropertyChanged(dbus.String(u"interval"),
945
dbus.UInt64(value, variant_level=1))
946
if getattr(self, u"checker_initiator_tag", None) is None:
2108
if getattr(self, "checker_initiator_tag", None) is None:
947
2109
return
948
# Reschedule checker run
949
gobject.source_remove(self.checker_initiator_tag)
950
self.checker_initiator_tag = (gobject.timeout_add
951
(value, self.start_checker))
952
self.start_checker() # Start one now, too
2110
if self.enabled:
2111
# Reschedule checker run
2112
GLib.source_remove(self.checker_initiator_tag)
2113
self.checker_initiator_tag = GLib.timeout_add(
2114
value, self.start_checker)
2115
self.start_checker() # Start one now, too
953
2116
954
# checker - property
955
@dbus_service_property(_interface, signature=u"s",
956
access=u"readwrite")
957
def checker_dbus_property(self, value=None):
2117
# Checker - property
2118
@dbus_service_property(_interface,
2119
signature="s",
2120
access="readwrite")
2121
def Checker_dbus_property(self, value=None):
958
2122
if value is None: # get
959
2123
return dbus.String(self.checker_command)
960
self.checker_command = value
961
# Emit D-Bus signal
962
self.PropertyChanged(dbus.String(u"checker"),
963
dbus.String(self.checker_command,
964
variant_level=1))
965
966
# checker_running - property
967
@dbus_service_property(_interface, signature=u"b",
968
access=u"readwrite")
969
def checker_running_dbus_property(self, value=None):
2124
self.checker_command = str(value)
2125
2126
# CheckerRunning - property
2127
@dbus_service_property(_interface,
2128
signature="b",
2129
access="readwrite")
2130
def CheckerRunning_dbus_property(self, value=None):
970
2131
if value is None: # get
971
2132
return dbus.Boolean(self.checker is not None)
972
2133
if value:
973
2134
self.start_checker()
974
2135
else:
975
2136
self.stop_checker()
976
977
# object_path - property
978
@dbus_service_property(_interface, signature=u"o", access=u"read")
979
def object_path_dbus_property(self):
980
return self.dbus_object_path # is already a dbus.ObjectPath
981
982
# secret = property
983
@dbus_service_property(_interface, signature=u"ay",
984
access=u"write", byte_arrays=True)
985
def secret_dbus_property(self, value):
986
self.secret = str(value)
987
2137
2138
# ObjectPath - property
2139
@dbus_annotations(
2140
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2141
"org.freedesktop.DBus.Deprecated": "true"})
2142
@dbus_service_property(_interface, signature="o", access="read")
2143
def ObjectPath_dbus_property(self):
2144
return self.dbus_object_path # is already a dbus.ObjectPath
2145
2146
# Secret = property
2147
@dbus_annotations(
2148
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2149
"invalidates"})
2150
@dbus_service_property(_interface,
2151
signature="ay",
2152
access="write",
2153
byte_arrays=True)
2154
def Secret_dbus_property(self, value):
2155
self.secret = bytes(value)
2156
988
2157
del _interface
989
2158
990
2159
2160
class ProxyClient(object):
2161
def __init__(self, child_pipe, fpr, address):
2162
self._pipe = child_pipe
2163
self._pipe.send(('init', fpr, address))
2164
if not self._pipe.recv():
2165
raise KeyError(fpr)
2166
2167
def __getattribute__(self, name):
2168
if name == '_pipe':
2169
return super(ProxyClient, self).__getattribute__(name)
2170
self._pipe.send(('getattr', name))
2171
data = self._pipe.recv()
2172
if data[0] == 'data':
2173
return data[1]
2174
if data[0] == 'function':
2175
2176
def func(*args, **kwargs):
2177
self._pipe.send(('funcall', name, args, kwargs))
2178
return self._pipe.recv()[1]
2179
2180
return func
2181
2182
def __setattr__(self, name, value):
2183
if name == '_pipe':
2184
return super(ProxyClient, self).__setattr__(name, value)
2185
self._pipe.send(('setattr', name, value))
2186
2187
991
2188
class ClientHandler(socketserver.BaseRequestHandler, object):
992
2189
"""A class to handle client connections.
993
2190
994
2191
Instantiated once for each connection to handle it.
995
2192
Note: This will run in its own forked process."""
996
2193
997
2194
def handle(self):
998
logger.info(u"TCP connection from: %s",
999
unicode(self.client_address))
1000
logger.debug(u"IPC Pipe FD: %d",
1001
self.server.child_pipe[1].fileno())
1002
# Open IPC pipe to parent process
1003
with contextlib.nested(self.server.child_pipe[1],
1004
self.server.parent_pipe[0]
1005
) as (ipc, ipc_return):
1006
session = (gnutls.connection
1007
.ClientSession(self.request,
1008
gnutls.connection
1009
.X509Credentials()))
1010
1011
# Note: gnutls.connection.X509Credentials is really a
1012
# generic GnuTLS certificate credentials object so long as
1013
# no X.509 keys are added to it. Therefore, we can use it
1014
# here despite using OpenPGP certificates.
1015
1016
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1017
# u"+AES-256-CBC", u"+SHA1",
1018
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1019
# u"+DHE-DSS"))
2195
with contextlib.closing(self.server.child_pipe) as child_pipe:
2196
logger.info("TCP connection from: %s",
2197
str(self.client_address))
2198
logger.debug("Pipe FD: %d",
2199
self.server.child_pipe.fileno())
2200
2201
session = gnutls.ClientSession(self.request)
2202
2203
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2204
# "+AES-256-CBC", "+SHA1",
2205
# "+COMP-NULL", "+CTYPE-OPENPGP",
2206
# "+DHE-DSS"))
1020
2207
# Use a fallback default, since this MUST be set.
1021
2208
priority = self.server.gnutls_priority
1022
2209
if priority is None:
1023
priority = u"NORMAL"
1024
(gnutls.library.functions
1025
.gnutls_priority_set_direct(session._c_object,
1026
priority, None))
1027
2210
priority = "NORMAL"
2211
gnutls.priority_set_direct(session._c_object,
2212
priority.encode("utf-8"),
2213
None)
2214
1028
2215
# Start communication using the Mandos protocol
1029
2216
# Get protocol number
1030
2217
line = self.request.makefile().readline()
1031
logger.debug(u"Protocol version: %r", line)
2218
logger.debug("Protocol version: %r", line)
1032
2219
try:
1033
2220
if int(line.strip().split()[0]) > 1:
1034
raise RuntimeError
1035
except (ValueError, IndexError, RuntimeError), error:
1036
logger.error(u"Unknown protocol version: %s", error)
2221
raise RuntimeError(line)
2222
except (ValueError, IndexError, RuntimeError) as error:
2223
logger.error("Unknown protocol version: %s", error)
1037
2224
return
1038
2225
1039
2226
# Start GnuTLS connection
1040
2227
try:
1041
2228
session.handshake()
1042
except gnutls.errors.GNUTLSError, error:
1043
logger.warning(u"Handshake failed: %s", error)
2229
except gnutls.Error as error:
2230
logger.warning("Handshake failed: %s", error)
1044
2231
# Do not run session.bye() here: the session is not
1045
2232
# established. Just abandon the request.
1046
2233
return
1047
logger.debug(u"Handshake succeeded")
2234
logger.debug("Handshake succeeded")
2235
2236
approval_required = False
1048
2237
try:
1049
2238
try:
1050
fpr = self.fingerprint(self.peer_certificate
1051
(session))
1052
except (TypeError, gnutls.errors.GNUTLSError), error:
1053
logger.warning(u"Bad certificate: %s", error)
1054
return
1055
logger.debug(u"Fingerprint: %s", fpr)
1056
1057
for c in self.server.clients:
1058
if c.fingerprint == fpr:
1059
client = c
2239
fpr = self.fingerprint(
2240
self.peer_certificate(session))
2241
except (TypeError, gnutls.Error) as error:
2242
logger.warning("Bad certificate: %s", error)
2243
return
2244
logger.debug("Fingerprint: %s", fpr)
2245
2246
try:
2247
client = ProxyClient(child_pipe, fpr,
2248
self.client_address)
2249
except KeyError:
2250
return
2251
2252
if client.approval_delay:
2253
delay = client.approval_delay
2254
client.approvals_pending += 1
2255
approval_required = True
2256
2257
while True:
2258
if not client.enabled:
2259
logger.info("Client %s is disabled",
2260
client.name)
2261
if self.server.use_dbus:
2262
# Emit D-Bus signal
2263
client.Rejected("Disabled")
2264
return
2265
2266
if client.approved or not client.approval_delay:
2267
# We are approved or approval is disabled
1060
2268
break
1061
else:
1062
ipc.write(u"NOTFOUND %s %s\n"
1063
% (fpr, unicode(self.client_address)))
1064
return
1065
1066
class ClientProxy(object):
1067
"""Client proxy object. Not for calling methods."""
1068
def __init__(self, client):
1069
self.client = client
1070
def __getattr__(self, name):
1071
if name.startswith("ipc_"):
1072
def tempfunc():
1073
ipc.write("%s %s\n" % (name[4:].upper(),
1074
self.client.name))
1075
return tempfunc
1076
if not hasattr(self.client, name):
1077
raise AttributeError
1078
ipc.write(u"GETATTR %s %s\n"
1079
% (name, self.client.fingerprint))
1080
return pickle.load(ipc_return)
1081
clientproxy = ClientProxy(client)
1082
# Have to check if client.enabled, since it is
1083
# possible that the client was disabled since the
1084
# GnuTLS session was established.
1085
if not clientproxy.enabled:
1086
clientproxy.ipc_disabled()
1087
return
1088
1089
clientproxy.ipc_sending()
1090
sent_size = 0
1091
while sent_size < len(client.secret):
1092
sent = session.send(client.secret[sent_size:])
1093
logger.debug(u"Sent: %d, remaining: %d",
1094
sent, len(client.secret)
1095
- (sent_size + sent))
1096
sent_size += sent
2269
elif client.approved is None:
2270
logger.info("Client %s needs approval",
2271
client.name)
2272
if self.server.use_dbus:
2273
# Emit D-Bus signal
2274
client.NeedApproval(
2275
client.approval_delay.total_seconds()
2276
* 1000, client.approved_by_default)
2277
else:
2278
logger.warning("Client %s was not approved",
2279
client.name)
2280
if self.server.use_dbus:
2281
# Emit D-Bus signal
2282
client.Rejected("Denied")
2283
return
2284
2285
# wait until timeout or approved
2286
time = datetime.datetime.now()
2287
client.changedstate.acquire()
2288
client.changedstate.wait(delay.total_seconds())
2289
client.changedstate.release()
2290
time2 = datetime.datetime.now()
2291
if (time2 - time) >= delay:
2292
if not client.approved_by_default:
2293
logger.warning("Client %s timed out while"
2294
" waiting for approval",
2295
client.name)
2296
if self.server.use_dbus:
2297
# Emit D-Bus signal
2298
client.Rejected("Approval timed out")
2299
return
2300
else:
2301
break
2302
else:
2303
delay -= time2 - time
2304
2305
try:
2306
session.send(client.secret)
2307
except gnutls.Error as error:
2308
logger.warning("gnutls send failed",
2309
exc_info=error)
2310
return
2311
2312
logger.info("Sending secret to %s", client.name)
2313
# bump the timeout using extended_timeout
2314
client.bump_timeout(client.extended_timeout)
2315
if self.server.use_dbus:
2316
# Emit D-Bus signal
2317
client.GotSecret()
2318
1097
2319
finally:
1098
session.bye()
1099
2320
if approval_required:
2321
client.approvals_pending -= 1
2322
try:
2323
session.bye()
2324
except gnutls.Error as error:
2325
logger.warning("GnuTLS bye failed",
2326
exc_info=error)
2327
1100
2328
@staticmethod
1101
2329
def peer_certificate(session):
1102
2330
"Return the peer's OpenPGP certificate as a bytestring"
1103
2331
# If not an OpenPGP certificate...
1104
if (gnutls.library.functions
1105
.gnutls_certificate_type_get(session._c_object)
1106
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1107
# ...do the normal thing
1108
return session.peer_certificate
2332
if (gnutls.certificate_type_get(session._c_object)
2333
!= gnutls.CRT_OPENPGP):
2334
# ...return invalid data
2335
return b""
1109
2336
list_size = ctypes.c_uint(1)
1110
cert_list = (gnutls.library.functions
1111
.gnutls_certificate_get_peers
2337
cert_list = (gnutls.certificate_get_peers
1112
2338
(session._c_object, ctypes.byref(list_size)))
1113
2339
if not bool(cert_list) and list_size.value != 0:
1114
raise gnutls.errors.GNUTLSError(u"error getting peer"
1115
u" certificate")
2340
raise gnutls.Error("error getting peer certificate")
1116
2341
if list_size.value == 0:
1117
2342
return None
1118
2343
cert = cert_list[0]
1119
2344
return ctypes.string_at(cert.data, cert.size)
1120
2345
1121
2346
@staticmethod
1122
2347
def fingerprint(openpgp):
1123
2348
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1124
2349
# New GnuTLS "datum" with the OpenPGP public key
1125
datum = (gnutls.library.types
1126
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1127
ctypes.POINTER
1128
(ctypes.c_ubyte)),
1129
ctypes.c_uint(len(openpgp))))
2350
datum = gnutls.datum_t(
2351
ctypes.cast(ctypes.c_char_p(openpgp),
2352
ctypes.POINTER(ctypes.c_ubyte)),
2353
ctypes.c_uint(len(openpgp)))
1130
2354
# New empty GnuTLS certificate
1131
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1132
(gnutls.library.functions
1133
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2355
crt = gnutls.openpgp_crt_t()
2356
gnutls.openpgp_crt_init(ctypes.byref(crt))
1134
2357
# Import the OpenPGP public key into the certificate
1135
(gnutls.library.functions
1136
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1137
gnutls.library.constants
1138
.GNUTLS_OPENPGP_FMT_RAW))
2358
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2359
gnutls.OPENPGP_FMT_RAW)
1139
2360
# Verify the self signature in the key
1140
2361
crtverify = ctypes.c_uint()
1141
(gnutls.library.functions
1142
.gnutls_openpgp_crt_verify_self(crt, 0,
1143
ctypes.byref(crtverify)))
2362
gnutls.openpgp_crt_verify_self(crt, 0,
2363
ctypes.byref(crtverify))
1144
2364
if crtverify.value != 0:
1145
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1146
raise (gnutls.errors.CertificateSecurityError
1147
(u"Verify failed"))
2365
gnutls.openpgp_crt_deinit(crt)
2366
raise gnutls.CertificateSecurityError("Verify failed")
1148
2367
# New buffer for the fingerprint
1149
2368
buf = ctypes.create_string_buffer(20)
1150
2369
buf_len = ctypes.c_size_t()
1151
2370
# Get the fingerprint from the certificate into the buffer
1152
(gnutls.library.functions
1153
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1154
ctypes.byref(buf_len)))
2371
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2372
ctypes.byref(buf_len))
1155
2373
# Deinit the certificate
1156
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2374
gnutls.openpgp_crt_deinit(crt)
1157
2375
# Convert the buffer to a Python bytestring
1158
2376
fpr = ctypes.string_at(buf, buf_len.value)
1159
2377
# Convert the bytestring to hexadecimal notation
1160
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
2378
hex_fpr = binascii.hexlify(fpr).upper()
1161
2379
return hex_fpr
1162
2380
1163
2381
1164
class ForkingMixInWithPipes(socketserver.ForkingMixIn, object):
1165
"""Like socketserver.ForkingMixIn, but also pass a pipe pair."""
2382
class MultiprocessingMixIn(object):
2383
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2384
2385
def sub_process_main(self, request, address):
2386
try:
2387
self.finish_request(request, address)
2388
except Exception:
2389
self.handle_error(request, address)
2390
self.close_request(request)
2391
2392
def process_request(self, request, address):
2393
"""Start a new process to process the request."""
2394
proc = multiprocessing.Process(target=self.sub_process_main,
2395
args=(request, address))
2396
proc.start()
2397
return proc
2398
2399
2400
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2401
""" adds a pipe to the MixIn """
2402
1166
2403
def process_request(self, request, client_address):
1167
2404
"""Overrides and wraps the original process_request().
1168
2405
1169
2406
This function creates a new pipe in self.pipe
1170
2407
"""
1171
# Child writes to child_pipe
1172
self.child_pipe = map(os.fdopen, os.pipe(), u"rw", (1, 0))
1173
# Parent writes to parent_pipe
1174
self.parent_pipe = map(os.fdopen, os.pipe(), u"rw", (1, 0))
1175
super(ForkingMixInWithPipes,
1176
self).process_request(request, client_address)
1177
# Close unused ends for parent
1178
self.parent_pipe[0].close() # close read end
1179
self.child_pipe[1].close() # close write end
1180
self.add_pipe_fds(self.child_pipe[0], self.parent_pipe[1])
1181
def add_pipe_fds(self, child_pipe_fd, parent_pipe_fd):
2408
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2409
2410
proc = MultiprocessingMixIn.process_request(self, request,
2411
client_address)
2412
self.child_pipe.close()
2413
self.add_pipe(parent_pipe, proc)
2414
2415
def add_pipe(self, parent_pipe, proc):
1182
2416
"""Dummy function; override as necessary"""
1183
child_pipe_fd.close()
1184
parent_pipe_fd.close()
1185
1186
1187
class IPv6_TCPServer(ForkingMixInWithPipes,
2417
raise NotImplementedError()
2418
2419
2420
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1188
2421
socketserver.TCPServer, object):
1189
2422
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1190
2423
1191
2424
Attributes:
1192
2425
enabled: Boolean; whether this server is activated yet
1193
2426
interface: None or a network interface name (string)
1194
2427
use_ipv6: Boolean; to use IPv6 or not
1195
2428
"""
2429
1196
2430
def __init__(self, server_address, RequestHandlerClass,
1197
interface=None, use_ipv6=True):
2431
interface=None,
2432
use_ipv6=True,
2433
socketfd=None):
2434
"""If socketfd is set, use that file descriptor instead of
2435
creating a new one with socket.socket().
2436
"""
1198
2437
self.interface = interface
1199
2438
if use_ipv6:
1200
2439
self.address_family = socket.AF_INET6
2440
if socketfd is not None:
2441
# Save the file descriptor
2442
self.socketfd = socketfd
2443
# Save the original socket.socket() function
2444
self.socket_socket = socket.socket
2445
2446
# To implement --socket, we monkey patch socket.socket.
2447
#
2448
# (When socketserver.TCPServer is a new-style class, we
2449
# could make self.socket into a property instead of monkey
2450
# patching socket.socket.)
2451
#
2452
# Create a one-time-only replacement for socket.socket()
2453
@functools.wraps(socket.socket)
2454
def socket_wrapper(*args, **kwargs):
2455
# Restore original function so subsequent calls are
2456
# not affected.
2457
socket.socket = self.socket_socket
2458
del self.socket_socket
2459
# This time only, return a new socket object from the
2460
# saved file descriptor.
2461
return socket.fromfd(self.socketfd, *args, **kwargs)
2462
# Replace socket.socket() function with wrapper
2463
socket.socket = socket_wrapper
2464
# The socketserver.TCPServer.__init__ will call
2465
# socket.socket(), which might be our replacement,
2466
# socket_wrapper(), if socketfd was set.
1201
2467
socketserver.TCPServer.__init__(self, server_address,
1202
2468
RequestHandlerClass)
2469
1203
2470
def server_bind(self):
1204
2471
"""This overrides the normal server_bind() function
1205
2472
to bind to an interface if one was specified, and also NOT to
1206
2473
bind to an address or port if they were not specified."""
2474
global SO_BINDTODEVICE
1207
2475
if self.interface is not None:
1208
2476
if SO_BINDTODEVICE is None:
1209
logger.error(u"SO_BINDTODEVICE does not exist;"
1210
u" cannot bind to interface %s",
1211
self.interface)
1212
else:
1213
try:
1214
self.socket.setsockopt(socket.SOL_SOCKET,
1215
SO_BINDTODEVICE,
1216
str(self.interface
1217
+ u'\0'))
1218
except socket.error, error:
1219
if error[0] == errno.EPERM:
1220
logger.error(u"No permission to"
1221
u" bind to interface %s",
1222
self.interface)
1223
elif error[0] == errno.ENOPROTOOPT:
1224
logger.error(u"SO_BINDTODEVICE not available;"
1225
u" cannot bind to interface %s",
1226
self.interface)
1227
else:
1228
raise
2477
# Fall back to a hard-coded value which seems to be
2478
# common enough.
2479
logger.warning("SO_BINDTODEVICE not found, trying 25")
2480
SO_BINDTODEVICE = 25
2481
try:
2482
self.socket.setsockopt(
2483
socket.SOL_SOCKET, SO_BINDTODEVICE,
2484
(self.interface + "\0").encode("utf-8"))
2485
except socket.error as error:
2486
if error.errno == errno.EPERM:
2487
logger.error("No permission to bind to"
2488
" interface %s", self.interface)
2489
elif error.errno == errno.ENOPROTOOPT:
2490
logger.error("SO_BINDTODEVICE not available;"
2491
" cannot bind to interface %s",
2492
self.interface)
2493
elif error.errno == errno.ENODEV:
2494
logger.error("Interface %s does not exist,"
2495
" cannot bind", self.interface)
2496
else:
2497
raise
1229
2498
# Only bind(2) the socket if we really need to.
1230
2499
if self.server_address[0] or self.server_address[1]:
1231
2500
if not self.server_address[0]:
1232
2501
if self.address_family == socket.AF_INET6:
1233
any_address = u"::" # in6addr_any
2502
any_address = "::" # in6addr_any
1234
2503
else:
1235
any_address = socket.INADDR_ANY
2504
any_address = "0.0.0.0" # INADDR_ANY
1236
2505
self.server_address = (any_address,
1237
2506
self.server_address[1])
1238
2507
elif not self.server_address[1]:
1239
self.server_address = (self.server_address[0],
1240
0)
2508
self.server_address = (self.server_address[0], 0)
1241
2509
# if self.interface:
1242
2510
# self.server_address = (self.server_address[0],
1243
2511
# 0, # port
1249
2517
1250
2518
class MandosServer(IPv6_TCPServer):
1251
2519
"""Mandos server.
1252
2520
1253
2521
Attributes:
1254
2522
clients: set of Client objects
1255
2523
gnutls_priority GnuTLS priority string
1256
2524
use_dbus: Boolean; to emit D-Bus signals or not
1257
1258
Assumes a gobject.MainLoop event loop.
2525
2526
Assumes a GLib.MainLoop event loop.
1259
2527
"""
2528
1260
2529
def __init__(self, server_address, RequestHandlerClass,
1261
interface=None, use_ipv6=True, clients=None,
1262
gnutls_priority=None, use_dbus=True):
2530
interface=None,
2531
use_ipv6=True,
2532
clients=None,
2533
gnutls_priority=None,
2534
use_dbus=True,
2535
socketfd=None):
1263
2536
self.enabled = False
1264
2537
self.clients = clients
1265
2538
if self.clients is None:
1266
self.clients = set()
2539
self.clients = {}
1267
2540
self.use_dbus = use_dbus
1268
2541
self.gnutls_priority = gnutls_priority
1269
2542
IPv6_TCPServer.__init__(self, server_address,
1270
2543
RequestHandlerClass,
1271
interface = interface,
1272
use_ipv6 = use_ipv6)
2544
interface=interface,
2545
use_ipv6=use_ipv6,
2546
socketfd=socketfd)
2547
1273
2548
def server_activate(self):
1274
2549
if self.enabled:
1275
2550
return socketserver.TCPServer.server_activate(self)
2551
1276
2552
def enable(self):
1277
2553
self.enabled = True
1278
def add_pipe_fds(self, child_pipe_fd, parent_pipe_fd):
2554
2555
def add_pipe(self, parent_pipe, proc):
1279
2556
# Call "handle_ipc" for both data and EOF events
1280
gobject.io_add_watch(child_pipe_fd.fileno(),
1281
gobject.IO_IN | gobject.IO_HUP,
1282
functools.partial(self.handle_ipc,
1283
reply = parent_pipe_fd,
1284
sender= child_pipe_fd))
1285
def handle_ipc(self, source, condition, reply=None, sender=None):
1286
condition_names = {
1287
gobject.IO_IN: u"IN", # There is data to read.
1288
gobject.IO_OUT: u"OUT", # Data can be written (without
1289
# blocking).
1290
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1291
gobject.IO_ERR: u"ERR", # Error condition.
1292
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1293
# broken, usually for pipes and
1294
# sockets).
1295
}
1296
conditions_string = ' | '.join(name
1297
for cond, name in
1298
condition_names.iteritems()
1299
if cond & condition)
1300
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1301
conditions_string)
1302
1303
# Read a line from the file object
1304
cmdline = sender.readline()
1305
if not cmdline: # Empty line means end of file
1306
# close the IPC pipes
1307
sender.close()
1308
reply.close()
1309
1310
# Stop calling this function
1311
return False
1312
1313
logger.debug(u"IPC command: %r", cmdline)
1314
1315
# Parse and act on command
1316
cmd, args = cmdline.rstrip(u"\r\n").split(None, 1)
1317
1318
if cmd == u"NOTFOUND":
1319
fpr, address = args.split(None, 1)
1320
logger.warning(u"Client not found for fingerprint: %s, ad"
1321
u"dress: %s", fpr, address)
1322
if self.use_dbus:
1323
# Emit D-Bus signal
1324
mandos_dbus_service.ClientNotFound(fpr, address)
1325
elif cmd == u"DISABLED":
1326
for client in self.clients:
1327
if client.name == args:
1328
logger.warning(u"Client %s is disabled", args)
1329
if self.use_dbus:
1330
# Emit D-Bus signal
1331
client.Rejected()
1332
break
1333
else:
1334
logger.error(u"Unknown client %s is disabled", args)
1335
elif cmd == u"SENDING":
1336
for client in self.clients:
1337
if client.name == args:
1338
logger.info(u"Sending secret to %s", client.name)
1339
client.checked_ok()
1340
if self.use_dbus:
1341
# Emit D-Bus signal
1342
client.GotSecret()
1343
break
1344
else:
1345
logger.error(u"Sending secret to unknown client %s",
1346
args)
1347
elif cmd == u"GETATTR":
1348
attr_name, fpr = args.split(None, 1)
1349
for client in self.clients:
1350
if client.fingerprint == fpr:
1351
attr_value = getattr(client, attr_name, None)
1352
logger.debug("IPC reply: %r", attr_value)
1353
pickle.dump(attr_value, reply)
1354
break
1355
else:
1356
logger.error(u"Client %s on address %s requesting "
1357
u"attribute %s not found", fpr, address,
1358
attr_name)
1359
pickle.dump(None, reply)
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
2564
def handle_ipc(self, source, condition,
2565
parent_pipe=None,
2566
proc=None,
2567
client_object=None):
2568
# error, or the other end of multiprocessing.Pipe has closed
2569
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2570
# Wait for other process to exit
2571
proc.join()
2572
return False
2573
2574
# Read a request from the child
2575
request = parent_pipe.recv()
2576
command = request[0]
2577
2578
if command == 'init':
2579
fpr = request[1]
2580
address = request[2]
2581
2582
for c in self.clients.values():
2583
if c.fingerprint == fpr:
2584
client = c
2585
break
2586
else:
2587
logger.info("Client not found for fingerprint: %s, ad"
2588
"dress: %s", fpr, address)
2589
if self.use_dbus:
2590
# Emit D-Bus signal
2591
mandos_dbus_service.ClientNotFound(fpr,
2592
address[0])
2593
parent_pipe.send(False)
2594
return False
2595
2596
GLib.io_add_watch(
2597
parent_pipe.fileno(),
2598
GLib.IO_IN | GLib.IO_HUP,
2599
functools.partial(self.handle_ipc,
2600
parent_pipe=parent_pipe,
2601
proc=proc,
2602
client_object=client))
2603
parent_pipe.send(True)
2604
# remove the old hook in favor of the new above hook on
2605
# same fileno
2606
return False
2607
if command == 'funcall':
2608
funcname = request[1]
2609
args = request[2]
2610
kwargs = request[3]
2611
2612
parent_pipe.send(('data', getattr(client_object,
2613
funcname)(*args,
2614
**kwargs)))
2615
2616
if command == 'getattr':
2617
attrname = request[1]
2618
if isinstance(client_object.__getattribute__(attrname),
2619
collections.Callable):
2620
parent_pipe.send(('function', ))
2621
else:
2622
parent_pipe.send((
2623
'data', client_object.__getattribute__(attrname)))
2624
2625
if command == 'setattr':
2626
attrname = request[1]
2627
value = request[2]
2628
setattr(client_object, attrname, value)
2629
2630
return True
2631
2632
2633
def rfc3339_duration_to_delta(duration):
2634
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2635
2636
>>> rfc3339_duration_to_delta("P7D")
2637
datetime.timedelta(7)
2638
>>> rfc3339_duration_to_delta("PT60S")
2639
datetime.timedelta(0, 60)
2640
>>> rfc3339_duration_to_delta("PT60M")
2641
datetime.timedelta(0, 3600)
2642
>>> rfc3339_duration_to_delta("PT24H")
2643
datetime.timedelta(1)
2644
>>> rfc3339_duration_to_delta("P1W")
2645
datetime.timedelta(7)
2646
>>> rfc3339_duration_to_delta("PT5M30S")
2647
datetime.timedelta(0, 330)
2648
>>> rfc3339_duration_to_delta("P1DT3M20S")
2649
datetime.timedelta(1, 200)
2650
"""
2651
2652
# Parsing an RFC 3339 duration with regular expressions is not
2653
# possible - there would have to be multiple places for the same
2654
# values, like seconds. The current code, while more esoteric, is
2655
# cleaner without depending on a parsing library. If Python had a
2656
# built-in library for parsing we would use it, but we'd like to
2657
# avoid excessive use of external libraries.
2658
2659
# New type for defining tokens, syntax, and semantics all-in-one
2660
Token = collections.namedtuple("Token", (
2661
"regexp", # To match token; if "value" is not None, must have
2662
# a "group" containing digits
2663
"value", # datetime.timedelta or None
2664
"followers")) # Tokens valid after this token
2665
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2666
# the "duration" ABNF definition in RFC 3339, Appendix A.
2667
token_end = Token(re.compile(r"$"), None, frozenset())
2668
token_second = Token(re.compile(r"(\d+)S"),
2669
datetime.timedelta(seconds=1),
2670
frozenset((token_end, )))
2671
token_minute = Token(re.compile(r"(\d+)M"),
2672
datetime.timedelta(minutes=1),
2673
frozenset((token_second, token_end)))
2674
token_hour = Token(re.compile(r"(\d+)H"),
2675
datetime.timedelta(hours=1),
2676
frozenset((token_minute, token_end)))
2677
token_time = Token(re.compile(r"T"),
2678
None,
2679
frozenset((token_hour, token_minute,
2680
token_second)))
2681
token_day = Token(re.compile(r"(\d+)D"),
2682
datetime.timedelta(days=1),
2683
frozenset((token_time, token_end)))
2684
token_month = Token(re.compile(r"(\d+)M"),
2685
datetime.timedelta(weeks=4),
2686
frozenset((token_day, token_end)))
2687
token_year = Token(re.compile(r"(\d+)Y"),
2688
datetime.timedelta(weeks=52),
2689
frozenset((token_month, token_end)))
2690
token_week = Token(re.compile(r"(\d+)W"),
2691
datetime.timedelta(weeks=1),
2692
frozenset((token_end, )))
2693
token_duration = Token(re.compile(r"P"), None,
2694
frozenset((token_year, token_month,
2695
token_day, token_time,
2696
token_week)))
2697
# Define starting values:
2698
# Value so far
2699
value = datetime.timedelta()
2700
found_token = None
2701
# Following valid tokens
2702
followers = frozenset((token_duration, ))
2703
# String left to parse
2704
s = duration
2705
# Loop until end token is found
2706
while found_token is not token_end:
2707
# Search for any currently valid tokens
2708
for token in followers:
2709
match = token.regexp.match(s)
2710
if match is not None:
2711
# Token found
2712
if token.value is not None:
2713
# Value found, parse digits
2714
factor = int(match.group(1), 10)
2715
# Add to value so far
2716
value += factor * token.value
2717
# Strip token from string
2718
s = token.regexp.sub("", s, 1)
2719
# Go to found token
2720
found_token = token
2721
# Set valid next tokens
2722
followers = found_token.followers
2723
break
1360
2724
else:
1361
logger.error(u"Unknown IPC command: %r", cmdline)
1362
1363
# Keep calling this function
1364
return True
2725
# No currently valid tokens were found
2726
raise ValueError("Invalid RFC 3339 duration: {!r}"
2727
.format(duration))
2728
# End token found
2729
return value
1365
2730
1366
2731
1367
2732
def string_to_delta(interval):
1368
2733
"""Parse a string and return a datetime.timedelta
1369
1370
>>> string_to_delta(u'7d')
2734
2735
>>> string_to_delta('7d')
1371
2736
datetime.timedelta(7)
1372
>>> string_to_delta(u'60s')
2737
>>> string_to_delta('60s')
1373
2738
datetime.timedelta(0, 60)
1374
>>> string_to_delta(u'60m')
2739
>>> string_to_delta('60m')
1375
2740
datetime.timedelta(0, 3600)
1376
>>> string_to_delta(u'24h')
2741
>>> string_to_delta('24h')
1377
2742
datetime.timedelta(1)
1378
>>> string_to_delta(u'1w')
2743
>>> string_to_delta('1w')
1379
2744
datetime.timedelta(7)
1380
>>> string_to_delta(u'5m 30s')
2745
>>> string_to_delta('5m 30s')
1381
2746
datetime.timedelta(0, 330)
1382
2747
"""
2748
2749
try:
2750
return rfc3339_duration_to_delta(interval)
2751
except ValueError:
2752
pass
2753
1383
2754
timevalue = datetime.timedelta(0)
1384
2755
for s in interval.split():
1385
2756
try:
1386
suffix = unicode(s[-1])
2757
suffix = s[-1]
1387
2758
value = int(s[:-1])
1388
if suffix == u"d":
2759
if suffix == "d":
1389
2760
delta = datetime.timedelta(value)
1390
elif suffix == u"s":
2761
elif suffix == "s":
1391
2762
delta = datetime.timedelta(0, value)
1392
elif suffix == u"m":
2763
elif suffix == "m":
1393
2764
delta = datetime.timedelta(0, 0, 0, 0, value)
1394
elif suffix == u"h":
2765
elif suffix == "h":
1395
2766
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1396
elif suffix == u"w":
2767
elif suffix == "w":
1397
2768
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1398
2769
else:
1399
raise ValueError(u"Unknown suffix %r" % suffix)
1400
except (ValueError, IndexError), e:
1401
raise ValueError(e.message)
2770
raise ValueError("Unknown suffix {!r}".format(suffix))
2771
except IndexError as e:
2772
raise ValueError(*(e.args))
1402
2773
timevalue += delta
1403
2774
return timevalue
1404
2775
1405
2776
1406
def if_nametoindex(interface):
1407
"""Call the C function if_nametoindex(), or equivalent
1408
1409
Note: This function cannot accept a unicode string."""
1410
global if_nametoindex
1411
try:
1412
if_nametoindex = (ctypes.cdll.LoadLibrary
1413
(ctypes.util.find_library(u"c"))
1414
.if_nametoindex)
1415
except (OSError, AttributeError):
1416
logger.warning(u"Doing if_nametoindex the hard way")
1417
def if_nametoindex(interface):
1418
"Get an interface index the hard way, i.e. using fcntl()"
1419
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1420
with contextlib.closing(socket.socket()) as s:
1421
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1422
struct.pack(str(u"16s16x"),
1423
interface))
1424
interface_index = struct.unpack(str(u"I"),
1425
ifreq[16:20])[0]
1426
return interface_index
1427
return if_nametoindex(interface)
1428
1429
1430
def daemon(nochdir = False, noclose = False):
2777
def daemon(nochdir=False, noclose=False):
1431
2778
"""See daemon(3). Standard BSD Unix function.
1432
2779
1433
2780
This should really exist as os.daemon, but it doesn't (yet)."""
1434
2781
if os.fork():
1435
2782
sys.exit()
1436
2783
os.setsid()
1437
2784
if not nochdir:
1438
os.chdir(u"/")
2785
os.chdir("/")
1439
2786
if os.fork():
1440
2787
sys.exit()
1441
2788
if not noclose:
1442
2789
# Close all standard open file descriptors
1443
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2790
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1444
2791
if not stat.S_ISCHR(os.fstat(null).st_mode):
1445
2792
raise OSError(errno.ENODEV,
1446
u"%s not a character device"
1447
% os.path.devnull)
2793
"{} not a character device"
2794
.format(os.devnull))
1448
2795
os.dup2(null, sys.stdin.fileno())
1449
2796
os.dup2(null, sys.stdout.fileno())
1450
2797
os.dup2(null, sys.stderr.fileno())
1453
2800
1454
2801
1455
2802
def main():
1456
2803
1457
2804
##################################################################
1458
2805
# Parsing of options, both command line and config file
1459
1460
parser = optparse.OptionParser(version = "%%prog %s" % version)
1461
parser.add_option("-i", u"--interface", type=u"string",
1462
metavar="IF", help=u"Bind to interface IF")
1463
parser.add_option("-a", u"--address", type=u"string",
1464
help=u"Address to listen for requests on")
1465
parser.add_option("-p", u"--port", type=u"int",
1466
help=u"Port number to receive requests on")
1467
parser.add_option("--check", action=u"store_true",
1468
help=u"Run self-test")
1469
parser.add_option("--debug", action=u"store_true",
1470
help=u"Debug mode; run in foreground and log to"
1471
u" terminal")
1472
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1473
u" priority string (see GnuTLS documentation)")
1474
parser.add_option("--servicename", type=u"string",
1475
metavar=u"NAME", help=u"Zeroconf service name")
1476
parser.add_option("--configdir", type=u"string",
1477
default=u"/etc/mandos", metavar=u"DIR",
1478
help=u"Directory to search for configuration"
1479
u" files")
1480
parser.add_option("--no-dbus", action=u"store_false",
1481
dest=u"use_dbus", help=u"Do not provide D-Bus"
1482
u" system bus interface")
1483
parser.add_option("--no-ipv6", action=u"store_false",
1484
dest=u"use_ipv6", help=u"Do not use IPv6")
1485
options = parser.parse_args()[0]
1486
2806
2807
parser = argparse.ArgumentParser()
2808
parser.add_argument("-v", "--version", action="version",
2809
version="%(prog)s {}".format(version),
2810
help="show version number and exit")
2811
parser.add_argument("-i", "--interface", metavar="IF",
2812
help="Bind to interface IF")
2813
parser.add_argument("-a", "--address",
2814
help="Address to listen for requests on")
2815
parser.add_argument("-p", "--port", type=int,
2816
help="Port number to receive requests on")
2817
parser.add_argument("--check", action="store_true",
2818
help="Run self-test")
2819
parser.add_argument("--debug", action="store_true",
2820
help="Debug mode; run in foreground and log"
2821
" to terminal", default=None)
2822
parser.add_argument("--debuglevel", metavar="LEVEL",
2823
help="Debug level for stdout output")
2824
parser.add_argument("--priority", help="GnuTLS"
2825
" priority string (see GnuTLS documentation)")
2826
parser.add_argument("--servicename",
2827
metavar="NAME", help="Zeroconf service name")
2828
parser.add_argument("--configdir",
2829
default="/etc/mandos", metavar="DIR",
2830
help="Directory to search for configuration"
2831
" files")
2832
parser.add_argument("--no-dbus", action="store_false",
2833
dest="use_dbus", help="Do not provide D-Bus"
2834
" system bus interface", default=None)
2835
parser.add_argument("--no-ipv6", action="store_false",
2836
dest="use_ipv6", help="Do not use IPv6",
2837
default=None)
2838
parser.add_argument("--no-restore", action="store_false",
2839
dest="restore", help="Do not restore stored"
2840
" state", default=None)
2841
parser.add_argument("--socket", type=int,
2842
help="Specify a file descriptor to a network"
2843
" socket to use instead of creating one")
2844
parser.add_argument("--statedir", metavar="DIR",
2845
help="Directory to save/restore state in")
2846
parser.add_argument("--foreground", action="store_true",
2847
help="Run in foreground", default=None)
2848
parser.add_argument("--no-zeroconf", action="store_false",
2849
dest="zeroconf", help="Do not use Zeroconf",
2850
default=None)
2851
2852
options = parser.parse_args()
2853
1487
2854
if options.check:
1488
2855
import doctest
1489
doctest.testmod()
1490
sys.exit()
1491
2856
fail_count, test_count = doctest.testmod()
2857
sys.exit(os.EX_OK if fail_count == 0 else 1)
2858
1492
2859
# Default values for config file for server-global settings
1493
server_defaults = { u"interface": u"",
1494
u"address": u"",
1495
u"port": u"",
1496
u"debug": u"False",
1497
u"priority":
1498
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1499
u"servicename": u"Mandos",
1500
u"use_dbus": u"True",
1501
u"use_ipv6": u"True",
1502
}
1503
2860
server_defaults = {"interface": "",
2861
"address": "",
2862
"port": "",
2863
"debug": "False",
2864
"priority":
2865
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2866
":+SIGN-DSA-SHA256",
2867
"servicename": "Mandos",
2868
"use_dbus": "True",
2869
"use_ipv6": "True",
2870
"debuglevel": "",
2871
"restore": "True",
2872
"socket": "",
2873
"statedir": "/var/lib/mandos",
2874
"foreground": "False",
2875
"zeroconf": "True",
2876
}
2877
1504
2878
# Parse config file for server-global settings
1505
2879
server_config = configparser.SafeConfigParser(server_defaults)
1506
2880
del server_defaults
1507
server_config.read(os.path.join(options.configdir,
1508
u"mandos.conf"))
2881
server_config.read(os.path.join(options.configdir, "mandos.conf"))
1509
2882
# Convert the SafeConfigParser object to a dict
1510
2883
server_settings = server_config.defaults()
1511
2884
# Use the appropriate methods on the non-string config options
1512
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1513
server_settings[option] = server_config.getboolean(u"DEFAULT",
2885
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
2886
server_settings[option] = server_config.getboolean("DEFAULT",
1514
2887
option)
1515
2888
if server_settings["port"]:
1516
server_settings["port"] = server_config.getint(u"DEFAULT",
1517
u"port")
2889
server_settings["port"] = server_config.getint("DEFAULT",
2890
"port")
2891
if server_settings["socket"]:
2892
server_settings["socket"] = server_config.getint("DEFAULT",
2893
"socket")
2894
# Later, stdin will, and stdout and stderr might, be dup'ed
2895
# over with an opened os.devnull. But we don't want this to
2896
# happen with a supplied network socket.
2897
if 0 <= server_settings["socket"] <= 2:
2898
server_settings["socket"] = os.dup(server_settings
2899
["socket"])
1518
2900
del server_config
1519
2901
1520
2902
# Override the settings from the config file with command line
1521
2903
# options, if set.
1522
for option in (u"interface", u"address", u"port", u"debug",
1523
u"priority", u"servicename", u"configdir",
1524
u"use_dbus", u"use_ipv6"):
2904
for option in ("interface", "address", "port", "debug",
2905
"priority", "servicename", "configdir", "use_dbus",
2906
"use_ipv6", "debuglevel", "restore", "statedir",
2907
"socket", "foreground", "zeroconf"):
1525
2908
value = getattr(options, option)
1526
2909
if value is not None:
1527
2910
server_settings[option] = value
1528
2911
del options
1529
2912
# Force all strings to be unicode
1530
2913
for option in server_settings.keys():
1531
if type(server_settings[option]) is str:
1532
server_settings[option] = unicode(server_settings[option])
2914
if isinstance(server_settings[option], bytes):
2915
server_settings[option] = (server_settings[option]
2916
.decode("utf-8"))
2917
# Force all boolean options to be boolean
2918
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2919
"foreground", "zeroconf"):
2920
server_settings[option] = bool(server_settings[option])
2921
# Debug implies foreground
2922
if server_settings["debug"]:
2923
server_settings["foreground"] = True
1533
2924
# Now we have our good server settings in "server_settings"
1534
2925
1535
2926
##################################################################
1536
2927
2928
if (not server_settings["zeroconf"]
2929
and not (server_settings["port"]
2930
or server_settings["socket"] != "")):
2931
parser.error("Needs port or socket to work without Zeroconf")
2932
1537
2933
# For convenience
1538
debug = server_settings[u"debug"]
1539
use_dbus = server_settings[u"use_dbus"]
1540
use_ipv6 = server_settings[u"use_ipv6"]
1541
1542
if not debug:
1543
syslogger.setLevel(logging.WARNING)
1544
console.setLevel(logging.WARNING)
1545
1546
if server_settings[u"servicename"] != u"Mandos":
1547
syslogger.setFormatter(logging.Formatter
1548
(u'Mandos (%s) [%%(process)d]:'
1549
u' %%(levelname)s: %%(message)s'
1550
% server_settings[u"servicename"]))
1551
2934
debug = server_settings["debug"]
2935
debuglevel = server_settings["debuglevel"]
2936
use_dbus = server_settings["use_dbus"]
2937
use_ipv6 = server_settings["use_ipv6"]
2938
stored_state_path = os.path.join(server_settings["statedir"],
2939
stored_state_file)
2940
foreground = server_settings["foreground"]
2941
zeroconf = server_settings["zeroconf"]
2942
2943
if debug:
2944
initlogger(debug, logging.DEBUG)
2945
else:
2946
if not debuglevel:
2947
initlogger(debug)
2948
else:
2949
level = getattr(logging, debuglevel.upper())
2950
initlogger(debug, level)
2951
2952
if server_settings["servicename"] != "Mandos":
2953
syslogger.setFormatter(
2954
logging.Formatter('Mandos ({}) [%(process)d]:'
2955
' %(levelname)s: %(message)s'.format(
2956
server_settings["servicename"])))
2957
1552
2958
# Parse config file with clients
1553
client_defaults = { u"timeout": u"1h",
1554
u"interval": u"5m",
1555
u"checker": u"fping -q -- %%(host)s",
1556
u"host": u"",
1557
}
1558
client_config = configparser.SafeConfigParser(client_defaults)
1559
client_config.read(os.path.join(server_settings[u"configdir"],
1560
u"clients.conf"))
1561
2959
client_config = configparser.SafeConfigParser(Client
2960
.client_defaults)
2961
client_config.read(os.path.join(server_settings["configdir"],
2962
"clients.conf"))
2963
1562
2964
global mandos_dbus_service
1563
2965
mandos_dbus_service = None
1564
1565
tcp_server = MandosServer((server_settings[u"address"],
1566
server_settings[u"port"]),
1567
ClientHandler,
1568
interface=(server_settings[u"interface"]
1569
or None),
1570
use_ipv6=use_ipv6,
1571
gnutls_priority=
1572
server_settings[u"priority"],
1573
use_dbus=use_dbus)
1574
pidfilename = u"/var/run/mandos.pid"
1575
try:
1576
pidfile = open(pidfilename, u"w")
1577
except IOError:
1578
logger.error(u"Could not open file %r", pidfilename)
1579
1580
try:
1581
uid = pwd.getpwnam(u"_mandos").pw_uid
1582
gid = pwd.getpwnam(u"_mandos").pw_gid
1583
except KeyError:
1584
try:
1585
uid = pwd.getpwnam(u"mandos").pw_uid
1586
gid = pwd.getpwnam(u"mandos").pw_gid
2966
2967
socketfd = None
2968
if server_settings["socket"] != "":
2969
socketfd = server_settings["socket"]
2970
tcp_server = MandosServer(
2971
(server_settings["address"], server_settings["port"]),
2972
ClientHandler,
2973
interface=(server_settings["interface"] or None),
2974
use_ipv6=use_ipv6,
2975
gnutls_priority=server_settings["priority"],
2976
use_dbus=use_dbus,
2977
socketfd=socketfd)
2978
if not foreground:
2979
pidfilename = "/run/mandos.pid"
2980
if not os.path.isdir("/run/."):
2981
pidfilename = "/var/run/mandos.pid"
2982
pidfile = None
2983
try:
2984
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2985
except IOError as e:
2986
logger.error("Could not open file %r", pidfilename,
2987
exc_info=e)
2988
2989
for name, group in (("_mandos", "_mandos"),
2990
("mandos", "mandos"),
2991
("nobody", "nogroup")):
2992
try:
2993
uid = pwd.getpwnam(name).pw_uid
2994
gid = pwd.getpwnam(group).pw_gid
2995
break
1587
2996
except KeyError:
1588
try:
1589
uid = pwd.getpwnam(u"nobody").pw_uid
1590
gid = pwd.getpwnam(u"nobody").pw_gid
1591
except KeyError:
1592
uid = 65534
1593
gid = 65534
2997
continue
2998
else:
2999
uid = 65534
3000
gid = 65534
1594
3001
try:
1595
3002
os.setgid(gid)
1596
3003
os.setuid(uid)
1597
except OSError, error:
1598
if error[0] != errno.EPERM:
1599
raise error
1600
1601
# Enable all possible GnuTLS debugging
3004
if debug:
3005
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3006
gid))
3007
except OSError as error:
3008
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3009
.format(uid, gid, os.strerror(error.errno)))
3010
if error.errno != errno.EPERM:
3011
raise
3012
1602
3013
if debug:
3014
# Enable all possible GnuTLS debugging
3015
1603
3016
# "Use a log level over 10 to enable all debugging options."
1604
3017
# - GnuTLS manual
1605
gnutls.library.functions.gnutls_global_set_log_level(11)
1606
1607
@gnutls.library.types.gnutls_log_func
3018
gnutls.global_set_log_level(11)
3019
3020
@gnutls.log_func
1608
3021
def debug_gnutls(level, string):
1609
logger.debug(u"GnuTLS: %s", string[:-1])
1610
1611
(gnutls.library.functions
1612
.gnutls_global_set_log_function(debug_gnutls))
1613
3022
logger.debug("GnuTLS: %s", string[:-1])
3023
3024
gnutls.global_set_log_function(debug_gnutls)
3025
3026
# Redirect stdin so all checkers get /dev/null
3027
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
3028
os.dup2(null, sys.stdin.fileno())
3029
if null > 2:
3030
os.close(null)
3031
3032
# Need to fork before connecting to D-Bus
3033
if not foreground:
3034
# Close all input and output, do double fork, etc.
3035
daemon()
3036
3037
# multiprocessing will use threads, so before we use GLib we need
3038
# to inform GLib that threads will be used.
3039
GLib.threads_init()
3040
1614
3041
global main_loop
1615
3042
# From the Avahi example code
1616
DBusGMainLoop(set_as_default=True )
1617
main_loop = gobject.MainLoop()
3043
DBusGMainLoop(set_as_default=True)
3044
main_loop = GLib.MainLoop()
1618
3045
bus = dbus.SystemBus()
1619
3046
# End of Avahi example code
1620
3047
if use_dbus:
1621
3048
try:
1622
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
1623
bus, do_not_queue=True)
1624
except dbus.exceptions.NameExistsException, e:
1625
logger.error(unicode(e) + u", disabling D-Bus")
3049
bus_name = dbus.service.BusName("se.recompile.Mandos",
3050
bus,
3051
do_not_queue=True)
3052
old_bus_name = dbus.service.BusName(
3053
"se.bsnet.fukt.Mandos", bus,
3054
do_not_queue=True)
3055
except dbus.exceptions.DBusException as e:
3056
logger.error("Disabling D-Bus:", exc_info=e)
1626
3057
use_dbus = False
1627
server_settings[u"use_dbus"] = False
3058
server_settings["use_dbus"] = False
1628
3059
tcp_server.use_dbus = False
1629
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1630
service = AvahiService(name = server_settings[u"servicename"],
1631
servicetype = u"_mandos._tcp",
1632
protocol = protocol, bus = bus)
1633
if server_settings["interface"]:
1634
service.interface = (if_nametoindex
1635
(str(server_settings[u"interface"])))
1636
3060
if zeroconf:
3061
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3062
service = AvahiServiceToSyslog(
3063
name=server_settings["servicename"],
3064
servicetype="_mandos._tcp",
3065
protocol=protocol,
3066
bus=bus)
3067
if server_settings["interface"]:
3068
service.interface = if_nametoindex(
3069
server_settings["interface"].encode("utf-8"))
3070
3071
global multiprocessing_manager
3072
multiprocessing_manager = multiprocessing.Manager()
3073
1637
3074
client_class = Client
1638
3075
if use_dbus:
1639
client_class = functools.partial(ClientDBus, bus = bus)
1640
tcp_server.clients.update(set(
1641
client_class(name = section,
1642
config= dict(client_config.items(section)))
1643
for section in client_config.sections()))
3076
client_class = functools.partial(ClientDBus, bus=bus)
3077
3078
client_settings = Client.config_parser(client_config)
3079
old_client_settings = {}
3080
clients_data = {}
3081
3082
# This is used to redirect stdout and stderr for checker processes
3083
global wnull
3084
wnull = open(os.devnull, "w") # A writable /dev/null
3085
# Only used if server is running in foreground but not in debug
3086
# mode
3087
if debug or not foreground:
3088
wnull.close()
3089
3090
# Get client data and settings from last running state.
3091
if server_settings["restore"]:
3092
try:
3093
with open(stored_state_path, "rb") as stored_state:
3094
if sys.version_info.major == 2:
3095
clients_data, old_client_settings = pickle.load(
3096
stored_state)
3097
else:
3098
bytes_clients_data, bytes_old_client_settings = (
3099
pickle.load(stored_state, encoding="bytes"))
3100
# Fix bytes to strings
3101
# clients_data
3102
# .keys()
3103
clients_data = {(key.decode("utf-8")
3104
if isinstance(key, bytes)
3105
else key): value
3106
for key, value in
3107
bytes_clients_data.items()}
3108
del bytes_clients_data
3109
for key in clients_data:
3110
value = {(k.decode("utf-8")
3111
if isinstance(k, bytes) else k): v
3112
for k, v in
3113
clients_data[key].items()}
3114
clients_data[key] = value
3115
# .client_structure
3116
value["client_structure"] = [
3117
(s.decode("utf-8")
3118
if isinstance(s, bytes)
3119
else s) for s in
3120
value["client_structure"]]
3121
# .name & .host
3122
for k in ("name", "host"):
3123
if isinstance(value[k], bytes):
3124
value[k] = value[k].decode("utf-8")
3125
# old_client_settings
3126
# .keys()
3127
old_client_settings = {
3128
(key.decode("utf-8")
3129
if isinstance(key, bytes)
3130
else key): value
3131
for key, value in
3132
bytes_old_client_settings.items()}
3133
del bytes_old_client_settings
3134
# .host
3135
for value in old_client_settings.values():
3136
if isinstance(value["host"], bytes):
3137
value["host"] = (value["host"]
3138
.decode("utf-8"))
3139
os.remove(stored_state_path)
3140
except IOError as e:
3141
if e.errno == errno.ENOENT:
3142
logger.warning("Could not load persistent state:"
3143
" {}".format(os.strerror(e.errno)))
3144
else:
3145
logger.critical("Could not load persistent state:",
3146
exc_info=e)
3147
raise
3148
except EOFError as e:
3149
logger.warning("Could not load persistent state: "
3150
"EOFError:",
3151
exc_info=e)
3152
3153
with PGPEngine() as pgp:
3154
for client_name, client in clients_data.items():
3155
# Skip removed clients
3156
if client_name not in client_settings:
3157
continue
3158
3159
# Decide which value to use after restoring saved state.
3160
# We have three different values: Old config file,
3161
# new config file, and saved state.
3162
# New config value takes precedence if it differs from old
3163
# config value, otherwise use saved state.
3164
for name, value in client_settings[client_name].items():
3165
try:
3166
# For each value in new config, check if it
3167
# differs from the old config value (Except for
3168
# the "secret" attribute)
3169
if (name != "secret"
3170
and (value !=
3171
old_client_settings[client_name][name])):
3172
client[name] = value
3173
except KeyError:
3174
pass
3175
3176
# Clients who has passed its expire date can still be
3177
# enabled if its last checker was successful. A Client
3178
# whose checker succeeded before we stored its state is
3179
# assumed to have successfully run all checkers during
3180
# downtime.
3181
if client["enabled"]:
3182
if datetime.datetime.utcnow() >= client["expires"]:
3183
if not client["last_checked_ok"]:
3184
logger.warning(
3185
"disabling client {} - Client never "
3186
"performed a successful checker".format(
3187
client_name))
3188
client["enabled"] = False
3189
elif client["last_checker_status"] != 0:
3190
logger.warning(
3191
"disabling client {} - Client last"
3192
" checker failed with error code"
3193
" {}".format(
3194
client_name,
3195
client["last_checker_status"]))
3196
client["enabled"] = False
3197
else:
3198
client["expires"] = (
3199
datetime.datetime.utcnow()
3200
+ client["timeout"])
3201
logger.debug("Last checker succeeded,"
3202
" keeping {} enabled".format(
3203
client_name))
3204
try:
3205
client["secret"] = pgp.decrypt(
3206
client["encrypted_secret"],
3207
client_settings[client_name]["secret"])
3208
except PGPError:
3209
# If decryption fails, we use secret from new settings
3210
logger.debug("Failed to decrypt {} old secret".format(
3211
client_name))
3212
client["secret"] = (client_settings[client_name]
3213
["secret"])
3214
3215
# Add/remove clients based on new changes made to config
3216
for client_name in (set(old_client_settings)
3217
- set(client_settings)):
3218
del clients_data[client_name]
3219
for client_name in (set(client_settings)
3220
- set(old_client_settings)):
3221
clients_data[client_name] = client_settings[client_name]
3222
3223
# Create all client objects
3224
for client_name, client in clients_data.items():
3225
tcp_server.clients[client_name] = client_class(
3226
name=client_name,
3227
settings=client,
3228
server_settings=server_settings)
3229
1644
3230
if not tcp_server.clients:
1645
logger.warning(u"No clients defined")
1646
1647
if debug:
1648
# Redirect stdin so all checkers get /dev/null
1649
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1650
os.dup2(null, sys.stdin.fileno())
1651
if null > 2:
1652
os.close(null)
1653
else:
1654
# No console logging
1655
logger.removeHandler(console)
1656
# Close all input and output, do double fork, etc.
1657
daemon()
1658
1659
try:
1660
with pidfile:
3231
logger.warning("No clients defined")
3232
3233
if not foreground:
3234
if pidfile is not None:
1661
3235
pid = os.getpid()
1662
pidfile.write(str(pid) + "\n")
3236
try:
3237
with pidfile:
3238
print(pid, file=pidfile)
3239
except IOError:
3240
logger.error("Could not write to file %r with PID %d",
3241
pidfilename, pid)
1663
3242
del pidfile
1664
except IOError:
1665
logger.error(u"Could not write to file %r with PID %d",
1666
pidfilename, pid)
1667
except NameError:
1668
# "pidfile" was never created
1669
pass
1670
del pidfilename
1671
1672
if not debug:
1673
signal.signal(signal.SIGINT, signal.SIG_IGN)
1674
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1675
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1676
3243
del pidfilename
3244
3245
for termsig in (signal.SIGHUP, signal.SIGTERM):
3246
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3247
lambda: main_loop.quit() and False)
3248
1677
3249
if use_dbus:
1678
class MandosDBusService(dbus.service.Object):
3250
3251
@alternate_dbus_interfaces(
3252
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3253
class MandosDBusService(DBusObjectWithObjectManager):
1679
3254
"""A D-Bus proxy object"""
3255
1680
3256
def __init__(self):
1681
dbus.service.Object.__init__(self, bus, u"/")
1682
_interface = u"se.bsnet.fukt.Mandos"
1683
1684
@dbus.service.signal(_interface, signature=u"o")
3257
dbus.service.Object.__init__(self, bus, "/")
3258
3259
_interface = "se.recompile.Mandos"
3260
3261
@dbus.service.signal(_interface, signature="o")
1685
3262
def ClientAdded(self, objpath):
1686
3263
"D-Bus signal"
1687
3264
pass
1688
1689
@dbus.service.signal(_interface, signature=u"ss")
3265
3266
@dbus.service.signal(_interface, signature="ss")
1690
3267
def ClientNotFound(self, fingerprint, address):
1691
3268
"D-Bus signal"
1692
3269
pass
1693
1694
@dbus.service.signal(_interface, signature=u"os")
3270
3271
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3272
"true"})
3273
@dbus.service.signal(_interface, signature="os")
1695
3274
def ClientRemoved(self, objpath, name):
1696
3275
"D-Bus signal"
1697
3276
pass
1698
1699
@dbus.service.method(_interface, out_signature=u"ao")
3277
3278
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3279
"true"})
3280
@dbus.service.method(_interface, out_signature="ao")
1700
3281
def GetAllClients(self):
1701
3282
"D-Bus method"
1702
return dbus.Array(c.dbus_object_path
1703
for c in tcp_server.clients)
1704
3283
return dbus.Array(c.dbus_object_path for c in
3284
tcp_server.clients.values())
3285
3286
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3287
"true"})
1705
3288
@dbus.service.method(_interface,
1706
out_signature=u"a{oa{sv}}")
3289
out_signature="a{oa{sv}}")
1707
3290
def GetAllClientsWithProperties(self):
1708
3291
"D-Bus method"
1709
3292
return dbus.Dictionary(
1710
((c.dbus_object_path, c.GetAll(u""))
1711
for c in tcp_server.clients),
1712
signature=u"oa{sv}")
1713
1714
@dbus.service.method(_interface, in_signature=u"o")
3293
{c.dbus_object_path: c.GetAll(
3294
"se.recompile.Mandos.Client")
3295
for c in tcp_server.clients.values()},
3296
signature="oa{sv}")
3297
3298
@dbus.service.method(_interface, in_signature="o")
1715
3299
def RemoveClient(self, object_path):
1716
3300
"D-Bus method"
1717
for c in tcp_server.clients:
3301
for c in tcp_server.clients.values():
1718
3302
if c.dbus_object_path == object_path:
1719
tcp_server.clients.remove(c)
3303
del tcp_server.clients[c.name]
1720
3304
c.remove_from_connection()
1721
# Don't signal anything except ClientRemoved
3305
# Don't signal the disabling
1722
3306
c.disable(quiet=True)
1723
# Emit D-Bus signal
1724
self.ClientRemoved(object_path, c.name)
3307
# Emit D-Bus signal for removal
3308
self.client_removed_signal(c)
1725
3309
return
1726
3310
raise KeyError(object_path)
1727
3311
1728
3312
del _interface
1729
3313
3314
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3315
out_signature="a{oa{sa{sv}}}")
3316
def GetManagedObjects(self):
3317
"""D-Bus method"""
3318
return dbus.Dictionary(
3319
{client.dbus_object_path:
3320
dbus.Dictionary(
3321
{interface: client.GetAll(interface)
3322
for interface in
3323
client._get_all_interface_names()})
3324
for client in tcp_server.clients.values()})
3325
3326
def client_added_signal(self, client):
3327
"""Send the new standard signal and the old signal"""
3328
if use_dbus:
3329
# New standard signal
3330
self.InterfacesAdded(
3331
client.dbus_object_path,
3332
dbus.Dictionary(
3333
{interface: client.GetAll(interface)
3334
for interface in
3335
client._get_all_interface_names()}))
3336
# Old signal
3337
self.ClientAdded(client.dbus_object_path)
3338
3339
def client_removed_signal(self, client):
3340
"""Send the new standard signal and the old signal"""
3341
if use_dbus:
3342
# New standard signal
3343
self.InterfacesRemoved(
3344
client.dbus_object_path,
3345
client._get_all_interface_names())
3346
# Old signal
3347
self.ClientRemoved(client.dbus_object_path,
3348
client.name)
3349
1730
3350
mandos_dbus_service = MandosDBusService()
1731
3351
3352
# Save modules to variables to exempt the modules from being
3353
# unloaded before the function registered with atexit() is run.
3354
mp = multiprocessing
3355
wn = wnull
3356
1732
3357
def cleanup():
1733
3358
"Cleanup function; run on exit"
1734
service.cleanup()
1735
3359
if zeroconf:
3360
service.cleanup()
3361
3362
mp.active_children()
3363
wn.close()
3364
if not (tcp_server.clients or client_settings):
3365
return
3366
3367
# Store client before exiting. Secrets are encrypted with key
3368
# based on what config file has. If config file is
3369
# removed/edited, old secret will thus be unrecovable.
3370
clients = {}
3371
with PGPEngine() as pgp:
3372
for client in tcp_server.clients.values():
3373
key = client_settings[client.name]["secret"]
3374
client.encrypted_secret = pgp.encrypt(client.secret,
3375
key)
3376
client_dict = {}
3377
3378
# A list of attributes that can not be pickled
3379
# + secret.
3380
exclude = {"bus", "changedstate", "secret",
3381
"checker", "server_settings"}
3382
for name, typ in inspect.getmembers(dbus.service
3383
.Object):
3384
exclude.add(name)
3385
3386
client_dict["encrypted_secret"] = (client
3387
.encrypted_secret)
3388
for attr in client.client_structure:
3389
if attr not in exclude:
3390
client_dict[attr] = getattr(client, attr)
3391
3392
clients[client.name] = client_dict
3393
del client_settings[client.name]["secret"]
3394
3395
try:
3396
with tempfile.NamedTemporaryFile(
3397
mode='wb',
3398
suffix=".pickle",
3399
prefix='clients-',
3400
dir=os.path.dirname(stored_state_path),
3401
delete=False) as stored_state:
3402
pickle.dump((clients, client_settings), stored_state,
3403
protocol=2)
3404
tempname = stored_state.name
3405
os.rename(tempname, stored_state_path)
3406
except (IOError, OSError) as e:
3407
if not debug:
3408
try:
3409
os.remove(tempname)
3410
except NameError:
3411
pass
3412
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3413
logger.warning("Could not save persistent state: {}"
3414
.format(os.strerror(e.errno)))
3415
else:
3416
logger.warning("Could not save persistent state:",
3417
exc_info=e)
3418
raise
3419
3420
# Delete all clients, and settings from config
1736
3421
while tcp_server.clients:
1737
client = tcp_server.clients.pop()
3422
name, client = tcp_server.clients.popitem()
1738
3423
if use_dbus:
1739
3424
client.remove_from_connection()
1740
client.disable_hook = None
1741
# Don't signal anything except ClientRemoved
3425
# Don't signal the disabling
1742
3426
client.disable(quiet=True)
3427
# Emit D-Bus signal for removal
1743
3428
if use_dbus:
1744
# Emit D-Bus signal
1745
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
1746
client.name)
1747
3429
mandos_dbus_service.client_removed_signal(client)
3430
client_settings.clear()
3431
1748
3432
atexit.register(cleanup)
1749
1750
for client in tcp_server.clients:
3433
3434
for client in tcp_server.clients.values():
1751
3435
if use_dbus:
1752
# Emit D-Bus signal
1753
mandos_dbus_service.ClientAdded(client.dbus_object_path)
1754
client.enable()
1755
3436
# Emit D-Bus signal for adding
3437
mandos_dbus_service.client_added_signal(client)
3438
# Need to initiate checking of clients
3439
if client.enabled:
3440
client.init_checker()
3441
1756
3442
tcp_server.enable()
1757
3443
tcp_server.server_activate()
1758
3444
1759
3445
# Find out what port we got
1760
service.port = tcp_server.socket.getsockname()[1]
3446
if zeroconf:
3447
service.port = tcp_server.socket.getsockname()[1]
1761
3448
if use_ipv6:
1762
logger.info(u"Now listening on address %r, port %d,"
1763
" flowinfo %d, scope_id %d"
1764
% tcp_server.socket.getsockname())
3449
logger.info("Now listening on address %r, port %d,"
3450
" flowinfo %d, scope_id %d",
3451
*tcp_server.socket.getsockname())
1765
3452
else: # IPv4
1766
logger.info(u"Now listening on address %r, port %d"
1767
% tcp_server.socket.getsockname())
1768
1769
#service.interface = tcp_server.socket.getsockname()[3]
1770
3453
logger.info("Now listening on address %r, port %d",
3454
*tcp_server.socket.getsockname())
3455
3456
# service.interface = tcp_server.socket.getsockname()[3]
3457
1771
3458
try:
1772
# From the Avahi example code
1773
try:
1774
service.activate()
1775
except dbus.exceptions.DBusException, error:
1776
logger.critical(u"DBusException: %s", error)
1777
cleanup()
1778
sys.exit(1)
1779
# End of Avahi example code
1780
1781
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
1782
lambda *args, **kwargs:
1783
(tcp_server.handle_request
1784
(*args[2:], **kwargs) or True))
1785
1786
logger.debug(u"Starting main loop")
3459
if zeroconf:
3460
# From the Avahi example code
3461
try:
3462
service.activate()
3463
except dbus.exceptions.DBusException as error:
3464
logger.critical("D-Bus Exception", exc_info=error)
3465
cleanup()
3466
sys.exit(1)
3467
# End of Avahi example code
3468
3469
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3470
lambda *args, **kwargs:
3471
(tcp_server.handle_request
3472
(*args[2:], **kwargs) or True))
3473
3474
logger.debug("Starting main loop")
1787
3475
main_loop.run()
1788
except AvahiError, error:
1789
logger.critical(u"AvahiError: %s", error)
3476
except AvahiError as error:
3477
logger.critical("Avahi Error", exc_info=error)
1790
3478
cleanup()
1791
3479
sys.exit(1)
1792
3480
except KeyboardInterrupt:
1793
3481
if debug:
1794
print >> sys.stderr
1795
logger.debug(u"Server received KeyboardInterrupt")
1796
logger.debug(u"Server exiting")
3482
print("", file=sys.stderr)
3483
logger.debug("Server received KeyboardInterrupt")
3484
logger.debug("Server exiting")
1797
3485
# Must run before the D-Bus bus name gets deregistered
1798
3486
cleanup()
1799
3487
3488
1800
3489
if __name__ == '__main__':
1801
3490
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0