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- Committer: Teddy Hogeborn
- Date: 2017-02-21 21:42:08 UTC
- Revision ID: teddy@recompile.se-20170221214208-09wu1p4l2hjhqfoj
Use "read -r" in shell scripts to avoid backslash escapes
* initramfs-tools-hook: Use "read -r" to read filenames from network
hook given the "files" argument.
* initramfs-tools-script: Use "read -e" when parsing
"/conf/conf.d/cryptroot".
* mandos-keygen (keygen): Use "read -r" when reading passphrase.
* initramfs-tools-hook: Use "read -r" to read filenames from network
hook given the "files" argument.
* initramfs-tools-script: Use "read -e" when parsing
"/conf/conf.d/cryptroot".
* mandos-keygen (keygen): Use "read -r" when reading passphrase.
- 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
#
6
6
# This program is partly derived from an example program for an Avahi
7
7
# service publisher, downloaded from
8
8
# <http://avahi.org/wiki/PythonPublishExample>. This includes the
9
9
# methods "add", "remove", "server_state_changed",
10
10
# "entry_group_state_changed", "cleanup", and "activate" in the
11
11
# "AvahiService" class, and some lines in "main".
12
#
12
#
13
13
# Everything else is
14
# Copyright © 2008,2009 Teddy Hogeborn
15
# Copyright © 2008,2009 Björn Påhlsson
16
#
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 = "1.7.14"
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
1464
try:
1465
dbus.OBJECT_MANAGER_IFACE
1466
except AttributeError:
1467
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1468
1469
1470
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1471
"""A D-Bus object with an ObjectManager.
1472
1473
Classes inheriting from this exposes the standard
1474
GetManagedObjects call and the InterfacesAdded and
1475
InterfacesRemoved signals on the standard
1476
"org.freedesktop.DBus.ObjectManager" interface.
1477
1478
Note: No signals are sent automatically; they must be sent
1479
manually.
1480
"""
1481
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1482
out_signature="a{oa{sa{sv}}}")
1483
def GetManagedObjects(self):
1484
"""This function must be overridden"""
1485
raise NotImplementedError()
1486
1487
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1488
signature="oa{sa{sv}}")
1489
def InterfacesAdded(self, object_path, interfaces_and_properties):
1490
pass
1491
1492
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1493
def InterfacesRemoved(self, object_path, interfaces):
1494
pass
1495
1496
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1497
out_signature="s",
1498
path_keyword='object_path',
1499
connection_keyword='connection')
1500
def Introspect(self, object_path, connection):
1501
"""Overloading of standard D-Bus method.
1502
1503
Override return argument name of GetManagedObjects to be
1504
"objpath_interfaces_and_properties"
1505
"""
1506
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1507
object_path,
1508
connection)
1509
try:
1510
document = xml.dom.minidom.parseString(xmlstring)
1511
1512
for if_tag in document.getElementsByTagName("interface"):
1513
# Fix argument name for the GetManagedObjects method
1514
if (if_tag.getAttribute("name")
1515
== dbus.OBJECT_MANAGER_IFACE):
1516
for cn in if_tag.getElementsByTagName("method"):
1517
if (cn.getAttribute("name")
1518
== "GetManagedObjects"):
1519
for arg in cn.getElementsByTagName("arg"):
1520
if (arg.getAttribute("direction")
1521
== "out"):
1522
arg.setAttribute(
1523
"name",
1524
"objpath_interfaces"
1525
"_and_properties")
1526
xmlstring = document.toxml("utf-8")
1527
document.unlink()
1528
except (AttributeError, xml.dom.DOMException,
1529
xml.parsers.expat.ExpatError) as error:
1530
logger.error("Failed to override Introspection method",
1531
exc_info=error)
1532
return xmlstring
1533
1534
1535
def datetime_to_dbus(dt, variant_level=0):
1536
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1537
if dt is None:
1538
return dbus.String("", variant_level=variant_level)
1539
return dbus.String(dt.isoformat(), variant_level=variant_level)
1540
1541
1542
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1543
"""A class decorator; applied to a subclass of
1544
dbus.service.Object, it will add alternate D-Bus attributes with
1545
interface names according to the "alt_interface_names" mapping.
1546
Usage:
1547
1548
@alternate_dbus_interfaces({"org.example.Interface":
1549
"net.example.AlternateInterface"})
1550
class SampleDBusObject(dbus.service.Object):
1551
@dbus.service.method("org.example.Interface")
1552
def SampleDBusMethod():
1553
pass
1554
1555
The above "SampleDBusMethod" on "SampleDBusObject" will be
1556
reachable via two interfaces: "org.example.Interface" and
1557
"net.example.AlternateInterface", the latter of which will have
1558
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1559
"true", unless "deprecate" is passed with a False value.
1560
1561
This works for methods and signals, and also for D-Bus properties
1562
(from DBusObjectWithProperties) and interfaces (from the
1563
dbus_interface_annotations decorator).
1564
"""
1565
1566
def wrapper(cls):
1567
for orig_interface_name, alt_interface_name in (
1568
alt_interface_names.items()):
1569
attr = {}
1570
interface_names = set()
1571
# Go though all attributes of the class
1572
for attrname, attribute in inspect.getmembers(cls):
1573
# Ignore non-D-Bus attributes, and D-Bus attributes
1574
# with the wrong interface name
1575
if (not hasattr(attribute, "_dbus_interface")
1576
or not attribute._dbus_interface.startswith(
1577
orig_interface_name)):
1578
continue
1579
# Create an alternate D-Bus interface name based on
1580
# the current name
1581
alt_interface = attribute._dbus_interface.replace(
1582
orig_interface_name, alt_interface_name)
1583
interface_names.add(alt_interface)
1584
# Is this a D-Bus signal?
1585
if getattr(attribute, "_dbus_is_signal", False):
1586
# Extract the original non-method undecorated
1587
# function by black magic
1588
if sys.version_info.major == 2:
1589
nonmethod_func = (dict(
1590
zip(attribute.func_code.co_freevars,
1591
attribute.__closure__))
1592
["func"].cell_contents)
1593
else:
1594
nonmethod_func = (dict(
1595
zip(attribute.__code__.co_freevars,
1596
attribute.__closure__))
1597
["func"].cell_contents)
1598
# Create a new, but exactly alike, function
1599
# object, and decorate it to be a new D-Bus signal
1600
# with the alternate D-Bus interface name
1601
new_function = copy_function(nonmethod_func)
1602
new_function = (dbus.service.signal(
1603
alt_interface,
1604
attribute._dbus_signature)(new_function))
1605
# Copy annotations, if any
1606
try:
1607
new_function._dbus_annotations = dict(
1608
attribute._dbus_annotations)
1609
except AttributeError:
1610
pass
1611
1612
# Define a creator of a function to call both the
1613
# original and alternate functions, so both the
1614
# original and alternate signals gets sent when
1615
# the function is called
1616
def fixscope(func1, func2):
1617
"""This function is a scope container to pass
1618
func1 and func2 to the "call_both" function
1619
outside of its arguments"""
1620
1621
@functools.wraps(func2)
1622
def call_both(*args, **kwargs):
1623
"""This function will emit two D-Bus
1624
signals by calling func1 and func2"""
1625
func1(*args, **kwargs)
1626
func2(*args, **kwargs)
1627
# Make wrapper function look like a D-Bus
1628
# signal
1629
for name, attr in inspect.getmembers(func2):
1630
if name.startswith("_dbus_"):
1631
setattr(call_both, name, attr)
1632
1633
return call_both
1634
# Create the "call_both" function and add it to
1635
# the class
1636
attr[attrname] = fixscope(attribute, new_function)
1637
# Is this a D-Bus method?
1638
elif getattr(attribute, "_dbus_is_method", False):
1639
# Create a new, but exactly alike, function
1640
# object. Decorate it to be a new D-Bus method
1641
# with the alternate D-Bus interface name. Add it
1642
# to the class.
1643
attr[attrname] = (
1644
dbus.service.method(
1645
alt_interface,
1646
attribute._dbus_in_signature,
1647
attribute._dbus_out_signature)
1648
(copy_function(attribute)))
1649
# Copy annotations, if any
1650
try:
1651
attr[attrname]._dbus_annotations = dict(
1652
attribute._dbus_annotations)
1653
except AttributeError:
1654
pass
1655
# Is this a D-Bus property?
1656
elif getattr(attribute, "_dbus_is_property", False):
1657
# Create a new, but exactly alike, function
1658
# object, and decorate it to be a new D-Bus
1659
# property with the alternate D-Bus interface
1660
# name. Add it to the class.
1661
attr[attrname] = (dbus_service_property(
1662
alt_interface, attribute._dbus_signature,
1663
attribute._dbus_access,
1664
attribute._dbus_get_args_options
1665
["byte_arrays"])
1666
(copy_function(attribute)))
1667
# Copy annotations, if any
1668
try:
1669
attr[attrname]._dbus_annotations = dict(
1670
attribute._dbus_annotations)
1671
except AttributeError:
1672
pass
1673
# Is this a D-Bus interface?
1674
elif getattr(attribute, "_dbus_is_interface", False):
1675
# Create a new, but exactly alike, function
1676
# object. Decorate it to be a new D-Bus interface
1677
# with the alternate D-Bus interface name. Add it
1678
# to the class.
1679
attr[attrname] = (
1680
dbus_interface_annotations(alt_interface)
1681
(copy_function(attribute)))
1682
if deprecate:
1683
# Deprecate all alternate interfaces
1684
iname = "_AlternateDBusNames_interface_annotation{}"
1685
for interface_name in interface_names:
1686
1687
@dbus_interface_annotations(interface_name)
1688
def func(self):
1689
return {"org.freedesktop.DBus.Deprecated":
1690
"true"}
1691
# Find an unused name
1692
for aname in (iname.format(i)
1693
for i in itertools.count()):
1694
if aname not in attr:
1695
attr[aname] = func
1696
break
1697
if interface_names:
1698
# Replace the class with a new subclass of it with
1699
# methods, signals, etc. as created above.
1700
if sys.version_info.major == 2:
1701
cls = type(b"{}Alternate".format(cls.__name__),
1702
(cls, ), attr)
1703
else:
1704
cls = type("{}Alternate".format(cls.__name__),
1705
(cls, ), attr)
1706
return cls
1707
1708
return wrapper
1709
1710
1711
@alternate_dbus_interfaces({"se.recompile.Mandos":
1712
"se.bsnet.fukt.Mandos"})
671
1713
class ClientDBus(Client, DBusObjectWithProperties):
672
1714
"""A Client class using D-Bus
673
1715
674
1716
Attributes:
675
1717
dbus_object_path: dbus.ObjectPath
676
1718
bus: dbus.SystemBus()
677
1719
"""
1720
1721
runtime_expansions = (Client.runtime_expansions
1722
+ ("dbus_object_path", ))
1723
1724
_interface = "se.recompile.Mandos.Client"
1725
678
1726
# dbus.service.Object doesn't use super(), so we can't either.
679
680
def __init__(self, bus = None, *args, **kwargs):
1727
1728
def __init__(self, bus=None, *args, **kwargs):
681
1729
self.bus = bus
682
1730
Client.__init__(self, *args, **kwargs)
683
1731
# Only now, when this client is initialized, can it show up on
684
1732
# the D-Bus
685
self.dbus_object_path = (dbus.ObjectPath
686
(u"/clients/"
687
+ self.name.replace(u".", u"_")))
1733
client_object_name = str(self.name).translate(
1734
{ord("."): ord("_"),
1735
ord("-"): ord("_")})
1736
self.dbus_object_path = dbus.ObjectPath(
1737
"/clients/" + client_object_name)
688
1738
DBusObjectWithProperties.__init__(self, self.bus,
689
1739
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
1740
1741
def notifychangeproperty(transform_func, dbus_name,
1742
type_func=lambda x: x,
1743
variant_level=1,
1744
invalidate_only=False,
1745
_interface=_interface):
1746
""" Modify a variable so that it's a property which announces
1747
its changes to DBus.
1748
1749
transform_fun: Function that takes a value and a variant_level
1750
and transforms it to a D-Bus type.
1751
dbus_name: D-Bus name of the variable
1752
type_func: Function that transform the value before sending it
1753
to the D-Bus. Default: no transform
1754
variant_level: D-Bus variant level. Default: 1
1755
"""
1756
attrname = "_{}".format(dbus_name)
1757
1758
def setter(self, value):
1759
if hasattr(self, "dbus_object_path"):
1760
if (not hasattr(self, attrname) or
1761
type_func(getattr(self, attrname, None))
1762
!= type_func(value)):
1763
if invalidate_only:
1764
self.PropertiesChanged(
1765
_interface, dbus.Dictionary(),
1766
dbus.Array((dbus_name, )))
1767
else:
1768
dbus_value = transform_func(
1769
type_func(value),
1770
variant_level=variant_level)
1771
self.PropertyChanged(dbus.String(dbus_name),
1772
dbus_value)
1773
self.PropertiesChanged(
1774
_interface,
1775
dbus.Dictionary({dbus.String(dbus_name):
1776
dbus_value}),
1777
dbus.Array())
1778
setattr(self, attrname, value)
1779
1780
return property(lambda self: getattr(self, attrname), setter)
1781
1782
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1783
approvals_pending = notifychangeproperty(dbus.Boolean,
1784
"ApprovalPending",
1785
type_func=bool)
1786
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1787
last_enabled = notifychangeproperty(datetime_to_dbus,
1788
"LastEnabled")
1789
checker = notifychangeproperty(
1790
dbus.Boolean, "CheckerRunning",
1791
type_func=lambda checker: checker is not None)
1792
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1793
"LastCheckedOK")
1794
last_checker_status = notifychangeproperty(dbus.Int16,
1795
"LastCheckerStatus")
1796
last_approval_request = notifychangeproperty(
1797
datetime_to_dbus, "LastApprovalRequest")
1798
approved_by_default = notifychangeproperty(dbus.Boolean,
1799
"ApprovedByDefault")
1800
approval_delay = notifychangeproperty(
1801
dbus.UInt64, "ApprovalDelay",
1802
type_func=lambda td: td.total_seconds() * 1000)
1803
approval_duration = notifychangeproperty(
1804
dbus.UInt64, "ApprovalDuration",
1805
type_func=lambda td: td.total_seconds() * 1000)
1806
host = notifychangeproperty(dbus.String, "Host")
1807
timeout = notifychangeproperty(
1808
dbus.UInt64, "Timeout",
1809
type_func=lambda td: td.total_seconds() * 1000)
1810
extended_timeout = notifychangeproperty(
1811
dbus.UInt64, "ExtendedTimeout",
1812
type_func=lambda td: td.total_seconds() * 1000)
1813
interval = notifychangeproperty(
1814
dbus.UInt64, "Interval",
1815
type_func=lambda td: td.total_seconds() * 1000)
1816
checker_command = notifychangeproperty(dbus.String, "Checker")
1817
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1818
invalidate_only=True)
1819
1820
del notifychangeproperty
1821
719
1822
def __del__(self, *args, **kwargs):
720
1823
try:
721
1824
self.remove_from_connection()
722
1825
except LookupError:
723
1826
pass
724
if hasattr(DBusObjectWithProperties, u"__del__"):
1827
if hasattr(DBusObjectWithProperties, "__del__"):
725
1828
DBusObjectWithProperties.__del__(self, *args, **kwargs)
726
1829
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)
1830
1831
def checker_callback(self, source, condition,
1832
connection, command, *args, **kwargs):
1833
ret = Client.checker_callback(self, source, condition,
1834
connection, command, *args,
1835
**kwargs)
1836
exitstatus = self.last_checker_status
1837
if exitstatus >= 0:
737
1838
# Emit D-Bus signal
738
1839
self.CheckerCompleted(dbus.Int16(exitstatus),
739
dbus.Int64(condition),
1840
# This is specific to GNU libC
1841
dbus.Int64(exitstatus << 8),
740
1842
dbus.String(command))
741
1843
else:
742
1844
# Emit D-Bus signal
743
1845
self.CheckerCompleted(dbus.Int16(-1),
744
dbus.Int64(condition),
1846
dbus.Int64(
1847
# This is specific to GNU libC
1848
(exitstatus << 8)
1849
| self.last_checker_signal),
745
1850
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
1851
return ret
1852
759
1853
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
1854
old_checker_pid = getattr(self.checker, "pid", None)
765
1855
r = Client.start_checker(self, *args, **kwargs)
766
1856
# Only if new checker process was started
767
1857
if (self.checker is not None
768
1858
and old_checker_pid != self.checker.pid):
769
1859
# Emit D-Bus signal
770
1860
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
1861
return r
1862
1863
def _reset_approved(self):
1864
self.approved = None
1865
return False
1866
1867
def approve(self, value=True):
1868
self.approved = value
1869
GLib.timeout_add(int(self.approval_duration.total_seconds()
1870
* 1000), self._reset_approved)
1871
self.send_changedstate()
1872
1873
# D-Bus methods, signals & properties
1874
1875
# Interfaces
1876
1877
# Signals
1878
790
1879
# CheckerCompleted - signal
791
@dbus.service.signal(_interface, signature=u"nxs")
1880
@dbus.service.signal(_interface, signature="nxs")
792
1881
def CheckerCompleted(self, exitcode, waitstatus, command):
793
1882
"D-Bus signal"
794
1883
pass
795
1884
796
1885
# CheckerStarted - signal
797
@dbus.service.signal(_interface, signature=u"s")
1886
@dbus.service.signal(_interface, signature="s")
798
1887
def CheckerStarted(self, command):
799
1888
"D-Bus signal"
800
1889
pass
801
1890
802
1891
# PropertyChanged - signal
803
@dbus.service.signal(_interface, signature=u"sv")
1892
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1893
@dbus.service.signal(_interface, signature="sv")
804
1894
def PropertyChanged(self, property, value):
805
1895
"D-Bus signal"
806
1896
pass
807
1897
808
1898
# GotSecret - signal
809
1899
@dbus.service.signal(_interface)
810
1900
def GotSecret(self):
811
"D-Bus signal"
1901
"""D-Bus signal
1902
Is sent after a successful transfer of secret from the Mandos
1903
server to mandos-client
1904
"""
812
1905
pass
813
1906
814
1907
# Rejected - signal
815
@dbus.service.signal(_interface)
816
def Rejected(self):
1908
@dbus.service.signal(_interface, signature="s")
1909
def Rejected(self, reason):
817
1910
"D-Bus signal"
818
1911
pass
819
820
## Methods
821
1912
1913
# NeedApproval - signal
1914
@dbus.service.signal(_interface, signature="tb")
1915
def NeedApproval(self, timeout, default):
1916
"D-Bus signal"
1917
return self.need_approval()
1918
1919
# Methods
1920
1921
# Approve - method
1922
@dbus.service.method(_interface, in_signature="b")
1923
def Approve(self, value):
1924
self.approve(value)
1925
822
1926
# CheckedOK - method
823
1927
@dbus.service.method(_interface)
824
1928
def CheckedOK(self):
825
return self.checked_ok()
826
1929
self.checked_ok()
1930
827
1931
# Enable - method
1932
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
828
1933
@dbus.service.method(_interface)
829
1934
def Enable(self):
830
1935
"D-Bus method"
831
1936
self.enable()
832
1937
833
1938
# StartChecker - method
1939
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
834
1940
@dbus.service.method(_interface)
835
1941
def StartChecker(self):
836
1942
"D-Bus method"
837
1943
self.start_checker()
838
1944
839
1945
# Disable - method
1946
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
840
1947
@dbus.service.method(_interface)
841
1948
def Disable(self):
842
1949
"D-Bus method"
843
1950
self.disable()
844
1951
845
1952
# StopChecker - method
1953
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
846
1954
@dbus.service.method(_interface)
847
1955
def StopChecker(self):
848
1956
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):
1957
1958
# Properties
1959
1960
# ApprovalPending - property
1961
@dbus_service_property(_interface, signature="b", access="read")
1962
def ApprovalPending_dbus_property(self):
1963
return dbus.Boolean(bool(self.approvals_pending))
1964
1965
# ApprovedByDefault - property
1966
@dbus_service_property(_interface,
1967
signature="b",
1968
access="readwrite")
1969
def ApprovedByDefault_dbus_property(self, value=None):
1970
if value is None: # get
1971
return dbus.Boolean(self.approved_by_default)
1972
self.approved_by_default = bool(value)
1973
1974
# ApprovalDelay - property
1975
@dbus_service_property(_interface,
1976
signature="t",
1977
access="readwrite")
1978
def ApprovalDelay_dbus_property(self, value=None):
1979
if value is None: # get
1980
return dbus.UInt64(self.approval_delay.total_seconds()
1981
* 1000)
1982
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1983
1984
# ApprovalDuration - property
1985
@dbus_service_property(_interface,
1986
signature="t",
1987
access="readwrite")
1988
def ApprovalDuration_dbus_property(self, value=None):
1989
if value is None: # get
1990
return dbus.UInt64(self.approval_duration.total_seconds()
1991
* 1000)
1992
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1993
1994
# Name - property
1995
@dbus_annotations(
1996
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1997
@dbus_service_property(_interface, signature="s", access="read")
1998
def Name_dbus_property(self):
855
1999
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):
2000
2001
# Fingerprint - property
2002
@dbus_annotations(
2003
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2004
@dbus_service_property(_interface, signature="s", access="read")
2005
def Fingerprint_dbus_property(self):
860
2006
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):
2007
2008
# Host - property
2009
@dbus_service_property(_interface,
2010
signature="s",
2011
access="readwrite")
2012
def Host_dbus_property(self, value=None):
866
2013
if value is None: # get
867
2014
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):
2015
self.host = str(value)
2016
2017
# Created - property
2018
@dbus_annotations(
2019
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2020
@dbus_service_property(_interface, signature="s", access="read")
2021
def Created_dbus_property(self):
2022
return datetime_to_dbus(self.created)
2023
2024
# LastEnabled - property
2025
@dbus_service_property(_interface, signature="s", access="read")
2026
def LastEnabled_dbus_property(self):
2027
return datetime_to_dbus(self.last_enabled)
2028
2029
# Enabled - property
2030
@dbus_service_property(_interface,
2031
signature="b",
2032
access="readwrite")
2033
def Enabled_dbus_property(self, value=None):
889
2034
if value is None: # get
890
2035
return dbus.Boolean(self.enabled)
891
2036
if value:
892
2037
self.enable()
893
2038
else:
894
2039
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):
2040
2041
# LastCheckedOK - property
2042
@dbus_service_property(_interface,
2043
signature="s",
2044
access="readwrite")
2045
def LastCheckedOK_dbus_property(self, value=None):
900
2046
if value is not None:
901
2047
self.checked_ok()
902
2048
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):
2049
return datetime_to_dbus(self.last_checked_ok)
2050
2051
# LastCheckerStatus - property
2052
@dbus_service_property(_interface, signature="n", access="read")
2053
def LastCheckerStatus_dbus_property(self):
2054
return dbus.Int16(self.last_checker_status)
2055
2056
# Expires - property
2057
@dbus_service_property(_interface, signature="s", access="read")
2058
def Expires_dbus_property(self):
2059
return datetime_to_dbus(self.expires)
2060
2061
# LastApprovalRequest - property
2062
@dbus_service_property(_interface, signature="s", access="read")
2063
def LastApprovalRequest_dbus_property(self):
2064
return datetime_to_dbus(self.last_approval_request)
2065
2066
# Timeout - property
2067
@dbus_service_property(_interface,
2068
signature="t",
2069
access="readwrite")
2070
def Timeout_dbus_property(self, value=None):
912
2071
if value is None: # get
913
return dbus.UInt64(self.timeout_milliseconds())
2072
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2073
old_timeout = self.timeout
914
2074
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())
2075
# Reschedule disabling
2076
if self.enabled:
2077
now = datetime.datetime.utcnow()
2078
self.expires += self.timeout - old_timeout
2079
if self.expires <= now:
2080
# The timeout has passed
2081
self.disable()
2082
else:
2083
if (getattr(self, "disable_initiator_tag", None)
2084
is None):
2085
return
2086
GLib.source_remove(self.disable_initiator_tag)
2087
self.disable_initiator_tag = GLib.timeout_add(
2088
int((self.expires - now).total_seconds() * 1000),
2089
self.disable)
2090
2091
# ExtendedTimeout - property
2092
@dbus_service_property(_interface,
2093
signature="t",
2094
access="readwrite")
2095
def ExtendedTimeout_dbus_property(self, value=None):
2096
if value is None: # get
2097
return dbus.UInt64(self.extended_timeout.total_seconds()
2098
* 1000)
2099
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2100
2101
# Interval - property
2102
@dbus_service_property(_interface,
2103
signature="t",
2104
access="readwrite")
2105
def Interval_dbus_property(self, value=None):
2106
if value is None: # get
2107
return dbus.UInt64(self.interval.total_seconds() * 1000)
942
2108
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:
2109
if getattr(self, "checker_initiator_tag", None) is None:
947
2110
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
2111
if self.enabled:
2112
# Reschedule checker run
2113
GLib.source_remove(self.checker_initiator_tag)
2114
self.checker_initiator_tag = GLib.timeout_add(
2115
value, self.start_checker)
2116
self.start_checker() # Start one now, too
953
2117
954
# checker - property
955
@dbus_service_property(_interface, signature=u"s",
956
access=u"readwrite")
957
def checker_dbus_property(self, value=None):
2118
# Checker - property
2119
@dbus_service_property(_interface,
2120
signature="s",
2121
access="readwrite")
2122
def Checker_dbus_property(self, value=None):
958
2123
if value is None: # get
959
2124
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):
2125
self.checker_command = str(value)
2126
2127
# CheckerRunning - property
2128
@dbus_service_property(_interface,
2129
signature="b",
2130
access="readwrite")
2131
def CheckerRunning_dbus_property(self, value=None):
970
2132
if value is None: # get
971
2133
return dbus.Boolean(self.checker is not None)
972
2134
if value:
973
2135
self.start_checker()
974
2136
else:
975
2137
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
2138
2139
# ObjectPath - property
2140
@dbus_annotations(
2141
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2142
"org.freedesktop.DBus.Deprecated": "true"})
2143
@dbus_service_property(_interface, signature="o", access="read")
2144
def ObjectPath_dbus_property(self):
2145
return self.dbus_object_path # is already a dbus.ObjectPath
2146
2147
# Secret = property
2148
@dbus_annotations(
2149
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2150
"invalidates"})
2151
@dbus_service_property(_interface,
2152
signature="ay",
2153
access="write",
2154
byte_arrays=True)
2155
def Secret_dbus_property(self, value):
2156
self.secret = bytes(value)
2157
988
2158
del _interface
989
2159
990
2160
2161
class ProxyClient(object):
2162
def __init__(self, child_pipe, fpr, address):
2163
self._pipe = child_pipe
2164
self._pipe.send(('init', fpr, address))
2165
if not self._pipe.recv():
2166
raise KeyError(fpr)
2167
2168
def __getattribute__(self, name):
2169
if name == '_pipe':
2170
return super(ProxyClient, self).__getattribute__(name)
2171
self._pipe.send(('getattr', name))
2172
data = self._pipe.recv()
2173
if data[0] == 'data':
2174
return data[1]
2175
if data[0] == 'function':
2176
2177
def func(*args, **kwargs):
2178
self._pipe.send(('funcall', name, args, kwargs))
2179
return self._pipe.recv()[1]
2180
2181
return func
2182
2183
def __setattr__(self, name, value):
2184
if name == '_pipe':
2185
return super(ProxyClient, self).__setattr__(name, value)
2186
self._pipe.send(('setattr', name, value))
2187
2188
991
2189
class ClientHandler(socketserver.BaseRequestHandler, object):
992
2190
"""A class to handle client connections.
993
2191
994
2192
Instantiated once for each connection to handle it.
995
2193
Note: This will run in its own forked process."""
996
2194
997
2195
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"))
2196
with contextlib.closing(self.server.child_pipe) as child_pipe:
2197
logger.info("TCP connection from: %s",
2198
str(self.client_address))
2199
logger.debug("Pipe FD: %d",
2200
self.server.child_pipe.fileno())
2201
2202
session = gnutls.ClientSession(self.request)
2203
2204
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2205
# "+AES-256-CBC", "+SHA1",
2206
# "+COMP-NULL", "+CTYPE-OPENPGP",
2207
# "+DHE-DSS"))
1020
2208
# Use a fallback default, since this MUST be set.
1021
2209
priority = self.server.gnutls_priority
1022
2210
if priority is None:
1023
priority = u"NORMAL"
1024
(gnutls.library.functions
1025
.gnutls_priority_set_direct(session._c_object,
1026
priority, None))
1027
2211
priority = "NORMAL"
2212
gnutls.priority_set_direct(session._c_object,
2213
priority.encode("utf-8"),
2214
None)
2215
1028
2216
# Start communication using the Mandos protocol
1029
2217
# Get protocol number
1030
2218
line = self.request.makefile().readline()
1031
logger.debug(u"Protocol version: %r", line)
2219
logger.debug("Protocol version: %r", line)
1032
2220
try:
1033
2221
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)
2222
raise RuntimeError(line)
2223
except (ValueError, IndexError, RuntimeError) as error:
2224
logger.error("Unknown protocol version: %s", error)
1037
2225
return
1038
2226
1039
2227
# Start GnuTLS connection
1040
2228
try:
1041
2229
session.handshake()
1042
except gnutls.errors.GNUTLSError, error:
1043
logger.warning(u"Handshake failed: %s", error)
2230
except gnutls.Error as error:
2231
logger.warning("Handshake failed: %s", error)
1044
2232
# Do not run session.bye() here: the session is not
1045
2233
# established. Just abandon the request.
1046
2234
return
1047
logger.debug(u"Handshake succeeded")
2235
logger.debug("Handshake succeeded")
2236
2237
approval_required = False
1048
2238
try:
1049
2239
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
2240
fpr = self.fingerprint(
2241
self.peer_certificate(session))
2242
except (TypeError, gnutls.Error) as error:
2243
logger.warning("Bad certificate: %s", error)
2244
return
2245
logger.debug("Fingerprint: %s", fpr)
2246
2247
try:
2248
client = ProxyClient(child_pipe, fpr,
2249
self.client_address)
2250
except KeyError:
2251
return
2252
2253
if client.approval_delay:
2254
delay = client.approval_delay
2255
client.approvals_pending += 1
2256
approval_required = True
2257
2258
while True:
2259
if not client.enabled:
2260
logger.info("Client %s is disabled",
2261
client.name)
2262
if self.server.use_dbus:
2263
# Emit D-Bus signal
2264
client.Rejected("Disabled")
2265
return
2266
2267
if client.approved or not client.approval_delay:
2268
# We are approved or approval is disabled
1060
2269
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
2270
elif client.approved is None:
2271
logger.info("Client %s needs approval",
2272
client.name)
2273
if self.server.use_dbus:
2274
# Emit D-Bus signal
2275
client.NeedApproval(
2276
client.approval_delay.total_seconds()
2277
* 1000, client.approved_by_default)
2278
else:
2279
logger.warning("Client %s was not approved",
2280
client.name)
2281
if self.server.use_dbus:
2282
# Emit D-Bus signal
2283
client.Rejected("Denied")
2284
return
2285
2286
# wait until timeout or approved
2287
time = datetime.datetime.now()
2288
client.changedstate.acquire()
2289
client.changedstate.wait(delay.total_seconds())
2290
client.changedstate.release()
2291
time2 = datetime.datetime.now()
2292
if (time2 - time) >= delay:
2293
if not client.approved_by_default:
2294
logger.warning("Client %s timed out while"
2295
" waiting for approval",
2296
client.name)
2297
if self.server.use_dbus:
2298
# Emit D-Bus signal
2299
client.Rejected("Approval timed out")
2300
return
2301
else:
2302
break
2303
else:
2304
delay -= time2 - time
2305
2306
try:
2307
session.send(client.secret)
2308
except gnutls.Error as error:
2309
logger.warning("gnutls send failed",
2310
exc_info=error)
2311
return
2312
2313
logger.info("Sending secret to %s", client.name)
2314
# bump the timeout using extended_timeout
2315
client.bump_timeout(client.extended_timeout)
2316
if self.server.use_dbus:
2317
# Emit D-Bus signal
2318
client.GotSecret()
2319
1097
2320
finally:
1098
session.bye()
1099
2321
if approval_required:
2322
client.approvals_pending -= 1
2323
try:
2324
session.bye()
2325
except gnutls.Error as error:
2326
logger.warning("GnuTLS bye failed",
2327
exc_info=error)
2328
1100
2329
@staticmethod
1101
2330
def peer_certificate(session):
1102
2331
"Return the peer's OpenPGP certificate as a bytestring"
1103
2332
# 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
2333
if (gnutls.certificate_type_get(session._c_object)
2334
!= gnutls.CRT_OPENPGP):
2335
# ...return invalid data
2336
return b""
1109
2337
list_size = ctypes.c_uint(1)
1110
cert_list = (gnutls.library.functions
1111
.gnutls_certificate_get_peers
2338
cert_list = (gnutls.certificate_get_peers
1112
2339
(session._c_object, ctypes.byref(list_size)))
1113
2340
if not bool(cert_list) and list_size.value != 0:
1114
raise gnutls.errors.GNUTLSError(u"error getting peer"
1115
u" certificate")
2341
raise gnutls.Error("error getting peer certificate")
1116
2342
if list_size.value == 0:
1117
2343
return None
1118
2344
cert = cert_list[0]
1119
2345
return ctypes.string_at(cert.data, cert.size)
1120
2346
1121
2347
@staticmethod
1122
2348
def fingerprint(openpgp):
1123
2349
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1124
2350
# 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))))
2351
datum = gnutls.datum_t(
2352
ctypes.cast(ctypes.c_char_p(openpgp),
2353
ctypes.POINTER(ctypes.c_ubyte)),
2354
ctypes.c_uint(len(openpgp)))
1130
2355
# 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)))
2356
crt = gnutls.openpgp_crt_t()
2357
gnutls.openpgp_crt_init(ctypes.byref(crt))
1134
2358
# 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))
2359
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2360
gnutls.OPENPGP_FMT_RAW)
1139
2361
# Verify the self signature in the key
1140
2362
crtverify = ctypes.c_uint()
1141
(gnutls.library.functions
1142
.gnutls_openpgp_crt_verify_self(crt, 0,
1143
ctypes.byref(crtverify)))
2363
gnutls.openpgp_crt_verify_self(crt, 0,
2364
ctypes.byref(crtverify))
1144
2365
if crtverify.value != 0:
1145
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1146
raise (gnutls.errors.CertificateSecurityError
1147
(u"Verify failed"))
2366
gnutls.openpgp_crt_deinit(crt)
2367
raise gnutls.CertificateSecurityError("Verify failed")
1148
2368
# New buffer for the fingerprint
1149
2369
buf = ctypes.create_string_buffer(20)
1150
2370
buf_len = ctypes.c_size_t()
1151
2371
# 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)))
2372
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2373
ctypes.byref(buf_len))
1155
2374
# Deinit the certificate
1156
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2375
gnutls.openpgp_crt_deinit(crt)
1157
2376
# Convert the buffer to a Python bytestring
1158
2377
fpr = ctypes.string_at(buf, buf_len.value)
1159
2378
# Convert the bytestring to hexadecimal notation
1160
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
2379
hex_fpr = binascii.hexlify(fpr).upper()
1161
2380
return hex_fpr
1162
2381
1163
2382
1164
class ForkingMixInWithPipes(socketserver.ForkingMixIn, object):
1165
"""Like socketserver.ForkingMixIn, but also pass a pipe pair."""
2383
class MultiprocessingMixIn(object):
2384
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2385
2386
def sub_process_main(self, request, address):
2387
try:
2388
self.finish_request(request, address)
2389
except Exception:
2390
self.handle_error(request, address)
2391
self.close_request(request)
2392
2393
def process_request(self, request, address):
2394
"""Start a new process to process the request."""
2395
proc = multiprocessing.Process(target=self.sub_process_main,
2396
args=(request, address))
2397
proc.start()
2398
return proc
2399
2400
2401
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2402
""" adds a pipe to the MixIn """
2403
1166
2404
def process_request(self, request, client_address):
1167
2405
"""Overrides and wraps the original process_request().
1168
2406
1169
2407
This function creates a new pipe in self.pipe
1170
2408
"""
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):
2409
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2410
2411
proc = MultiprocessingMixIn.process_request(self, request,
2412
client_address)
2413
self.child_pipe.close()
2414
self.add_pipe(parent_pipe, proc)
2415
2416
def add_pipe(self, parent_pipe, proc):
1182
2417
"""Dummy function; override as necessary"""
1183
child_pipe_fd.close()
1184
parent_pipe_fd.close()
1185
1186
1187
class IPv6_TCPServer(ForkingMixInWithPipes,
2418
raise NotImplementedError()
2419
2420
2421
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1188
2422
socketserver.TCPServer, object):
1189
2423
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1190
2424
1191
2425
Attributes:
1192
2426
enabled: Boolean; whether this server is activated yet
1193
2427
interface: None or a network interface name (string)
1194
2428
use_ipv6: Boolean; to use IPv6 or not
1195
2429
"""
2430
1196
2431
def __init__(self, server_address, RequestHandlerClass,
1197
interface=None, use_ipv6=True):
2432
interface=None,
2433
use_ipv6=True,
2434
socketfd=None):
2435
"""If socketfd is set, use that file descriptor instead of
2436
creating a new one with socket.socket().
2437
"""
1198
2438
self.interface = interface
1199
2439
if use_ipv6:
1200
2440
self.address_family = socket.AF_INET6
2441
if socketfd is not None:
2442
# Save the file descriptor
2443
self.socketfd = socketfd
2444
# Save the original socket.socket() function
2445
self.socket_socket = socket.socket
2446
2447
# To implement --socket, we monkey patch socket.socket.
2448
#
2449
# (When socketserver.TCPServer is a new-style class, we
2450
# could make self.socket into a property instead of monkey
2451
# patching socket.socket.)
2452
#
2453
# Create a one-time-only replacement for socket.socket()
2454
@functools.wraps(socket.socket)
2455
def socket_wrapper(*args, **kwargs):
2456
# Restore original function so subsequent calls are
2457
# not affected.
2458
socket.socket = self.socket_socket
2459
del self.socket_socket
2460
# This time only, return a new socket object from the
2461
# saved file descriptor.
2462
return socket.fromfd(self.socketfd, *args, **kwargs)
2463
# Replace socket.socket() function with wrapper
2464
socket.socket = socket_wrapper
2465
# The socketserver.TCPServer.__init__ will call
2466
# socket.socket(), which might be our replacement,
2467
# socket_wrapper(), if socketfd was set.
1201
2468
socketserver.TCPServer.__init__(self, server_address,
1202
2469
RequestHandlerClass)
2470
1203
2471
def server_bind(self):
1204
2472
"""This overrides the normal server_bind() function
1205
2473
to bind to an interface if one was specified, and also NOT to
1206
2474
bind to an address or port if they were not specified."""
2475
global SO_BINDTODEVICE
1207
2476
if self.interface is not None:
1208
2477
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
2478
# Fall back to a hard-coded value which seems to be
2479
# common enough.
2480
logger.warning("SO_BINDTODEVICE not found, trying 25")
2481
SO_BINDTODEVICE = 25
2482
try:
2483
self.socket.setsockopt(
2484
socket.SOL_SOCKET, SO_BINDTODEVICE,
2485
(self.interface + "\0").encode("utf-8"))
2486
except socket.error as error:
2487
if error.errno == errno.EPERM:
2488
logger.error("No permission to bind to"
2489
" interface %s", self.interface)
2490
elif error.errno == errno.ENOPROTOOPT:
2491
logger.error("SO_BINDTODEVICE not available;"
2492
" cannot bind to interface %s",
2493
self.interface)
2494
elif error.errno == errno.ENODEV:
2495
logger.error("Interface %s does not exist,"
2496
" cannot bind", self.interface)
2497
else:
2498
raise
1229
2499
# Only bind(2) the socket if we really need to.
1230
2500
if self.server_address[0] or self.server_address[1]:
1231
2501
if not self.server_address[0]:
1232
2502
if self.address_family == socket.AF_INET6:
1233
any_address = u"::" # in6addr_any
2503
any_address = "::" # in6addr_any
1234
2504
else:
1235
any_address = socket.INADDR_ANY
2505
any_address = "0.0.0.0" # INADDR_ANY
1236
2506
self.server_address = (any_address,
1237
2507
self.server_address[1])
1238
2508
elif not self.server_address[1]:
1239
self.server_address = (self.server_address[0],
1240
0)
2509
self.server_address = (self.server_address[0], 0)
1241
2510
# if self.interface:
1242
2511
# self.server_address = (self.server_address[0],
1243
2512
# 0, # port
1249
2518
1250
2519
class MandosServer(IPv6_TCPServer):
1251
2520
"""Mandos server.
1252
2521
1253
2522
Attributes:
1254
2523
clients: set of Client objects
1255
2524
gnutls_priority GnuTLS priority string
1256
2525
use_dbus: Boolean; to emit D-Bus signals or not
1257
1258
Assumes a gobject.MainLoop event loop.
2526
2527
Assumes a GLib.MainLoop event loop.
1259
2528
"""
2529
1260
2530
def __init__(self, server_address, RequestHandlerClass,
1261
interface=None, use_ipv6=True, clients=None,
1262
gnutls_priority=None, use_dbus=True):
2531
interface=None,
2532
use_ipv6=True,
2533
clients=None,
2534
gnutls_priority=None,
2535
use_dbus=True,
2536
socketfd=None):
1263
2537
self.enabled = False
1264
2538
self.clients = clients
1265
2539
if self.clients is None:
1266
self.clients = set()
2540
self.clients = {}
1267
2541
self.use_dbus = use_dbus
1268
2542
self.gnutls_priority = gnutls_priority
1269
2543
IPv6_TCPServer.__init__(self, server_address,
1270
2544
RequestHandlerClass,
1271
interface = interface,
1272
use_ipv6 = use_ipv6)
2545
interface=interface,
2546
use_ipv6=use_ipv6,
2547
socketfd=socketfd)
2548
1273
2549
def server_activate(self):
1274
2550
if self.enabled:
1275
2551
return socketserver.TCPServer.server_activate(self)
2552
1276
2553
def enable(self):
1277
2554
self.enabled = True
1278
def add_pipe_fds(self, child_pipe_fd, parent_pipe_fd):
2555
2556
def add_pipe(self, parent_pipe, proc):
1279
2557
# 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)
2558
GLib.io_add_watch(
2559
parent_pipe.fileno(),
2560
GLib.IO_IN | GLib.IO_HUP,
2561
functools.partial(self.handle_ipc,
2562
parent_pipe=parent_pipe,
2563
proc=proc))
2564
2565
def handle_ipc(self, source, condition,
2566
parent_pipe=None,
2567
proc=None,
2568
client_object=None):
2569
# error, or the other end of multiprocessing.Pipe has closed
2570
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2571
# Wait for other process to exit
2572
proc.join()
2573
return False
2574
2575
# Read a request from the child
2576
request = parent_pipe.recv()
2577
command = request[0]
2578
2579
if command == 'init':
2580
fpr = request[1]
2581
address = request[2]
2582
2583
for c in self.clients.values():
2584
if c.fingerprint == fpr:
2585
client = c
2586
break
2587
else:
2588
logger.info("Client not found for fingerprint: %s, ad"
2589
"dress: %s", fpr, address)
2590
if self.use_dbus:
2591
# Emit D-Bus signal
2592
mandos_dbus_service.ClientNotFound(fpr,
2593
address[0])
2594
parent_pipe.send(False)
2595
return False
2596
2597
GLib.io_add_watch(
2598
parent_pipe.fileno(),
2599
GLib.IO_IN | GLib.IO_HUP,
2600
functools.partial(self.handle_ipc,
2601
parent_pipe=parent_pipe,
2602
proc=proc,
2603
client_object=client))
2604
parent_pipe.send(True)
2605
# remove the old hook in favor of the new above hook on
2606
# same fileno
2607
return False
2608
if command == 'funcall':
2609
funcname = request[1]
2610
args = request[2]
2611
kwargs = request[3]
2612
2613
parent_pipe.send(('data', getattr(client_object,
2614
funcname)(*args,
2615
**kwargs)))
2616
2617
if command == 'getattr':
2618
attrname = request[1]
2619
if isinstance(client_object.__getattribute__(attrname),
2620
collections.Callable):
2621
parent_pipe.send(('function', ))
2622
else:
2623
parent_pipe.send((
2624
'data', client_object.__getattribute__(attrname)))
2625
2626
if command == 'setattr':
2627
attrname = request[1]
2628
value = request[2]
2629
setattr(client_object, attrname, value)
2630
2631
return True
2632
2633
2634
def rfc3339_duration_to_delta(duration):
2635
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2636
2637
>>> rfc3339_duration_to_delta("P7D")
2638
datetime.timedelta(7)
2639
>>> rfc3339_duration_to_delta("PT60S")
2640
datetime.timedelta(0, 60)
2641
>>> rfc3339_duration_to_delta("PT60M")
2642
datetime.timedelta(0, 3600)
2643
>>> rfc3339_duration_to_delta("PT24H")
2644
datetime.timedelta(1)
2645
>>> rfc3339_duration_to_delta("P1W")
2646
datetime.timedelta(7)
2647
>>> rfc3339_duration_to_delta("PT5M30S")
2648
datetime.timedelta(0, 330)
2649
>>> rfc3339_duration_to_delta("P1DT3M20S")
2650
datetime.timedelta(1, 200)
2651
"""
2652
2653
# Parsing an RFC 3339 duration with regular expressions is not
2654
# possible - there would have to be multiple places for the same
2655
# values, like seconds. The current code, while more esoteric, is
2656
# cleaner without depending on a parsing library. If Python had a
2657
# built-in library for parsing we would use it, but we'd like to
2658
# avoid excessive use of external libraries.
2659
2660
# New type for defining tokens, syntax, and semantics all-in-one
2661
Token = collections.namedtuple("Token", (
2662
"regexp", # To match token; if "value" is not None, must have
2663
# a "group" containing digits
2664
"value", # datetime.timedelta or None
2665
"followers")) # Tokens valid after this token
2666
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2667
# the "duration" ABNF definition in RFC 3339, Appendix A.
2668
token_end = Token(re.compile(r"$"), None, frozenset())
2669
token_second = Token(re.compile(r"(\d+)S"),
2670
datetime.timedelta(seconds=1),
2671
frozenset((token_end, )))
2672
token_minute = Token(re.compile(r"(\d+)M"),
2673
datetime.timedelta(minutes=1),
2674
frozenset((token_second, token_end)))
2675
token_hour = Token(re.compile(r"(\d+)H"),
2676
datetime.timedelta(hours=1),
2677
frozenset((token_minute, token_end)))
2678
token_time = Token(re.compile(r"T"),
2679
None,
2680
frozenset((token_hour, token_minute,
2681
token_second)))
2682
token_day = Token(re.compile(r"(\d+)D"),
2683
datetime.timedelta(days=1),
2684
frozenset((token_time, token_end)))
2685
token_month = Token(re.compile(r"(\d+)M"),
2686
datetime.timedelta(weeks=4),
2687
frozenset((token_day, token_end)))
2688
token_year = Token(re.compile(r"(\d+)Y"),
2689
datetime.timedelta(weeks=52),
2690
frozenset((token_month, token_end)))
2691
token_week = Token(re.compile(r"(\d+)W"),
2692
datetime.timedelta(weeks=1),
2693
frozenset((token_end, )))
2694
token_duration = Token(re.compile(r"P"), None,
2695
frozenset((token_year, token_month,
2696
token_day, token_time,
2697
token_week)))
2698
# Define starting values:
2699
# Value so far
2700
value = datetime.timedelta()
2701
found_token = None
2702
# Following valid tokens
2703
followers = frozenset((token_duration, ))
2704
# String left to parse
2705
s = duration
2706
# Loop until end token is found
2707
while found_token is not token_end:
2708
# Search for any currently valid tokens
2709
for token in followers:
2710
match = token.regexp.match(s)
2711
if match is not None:
2712
# Token found
2713
if token.value is not None:
2714
# Value found, parse digits
2715
factor = int(match.group(1), 10)
2716
# Add to value so far
2717
value += factor * token.value
2718
# Strip token from string
2719
s = token.regexp.sub("", s, 1)
2720
# Go to found token
2721
found_token = token
2722
# Set valid next tokens
2723
followers = found_token.followers
2724
break
1360
2725
else:
1361
logger.error(u"Unknown IPC command: %r", cmdline)
1362
1363
# Keep calling this function
1364
return True
2726
# No currently valid tokens were found
2727
raise ValueError("Invalid RFC 3339 duration: {!r}"
2728
.format(duration))
2729
# End token found
2730
return value
1365
2731
1366
2732
1367
2733
def string_to_delta(interval):
1368
2734
"""Parse a string and return a datetime.timedelta
1369
1370
>>> string_to_delta(u'7d')
2735
2736
>>> string_to_delta('7d')
1371
2737
datetime.timedelta(7)
1372
>>> string_to_delta(u'60s')
2738
>>> string_to_delta('60s')
1373
2739
datetime.timedelta(0, 60)
1374
>>> string_to_delta(u'60m')
2740
>>> string_to_delta('60m')
1375
2741
datetime.timedelta(0, 3600)
1376
>>> string_to_delta(u'24h')
2742
>>> string_to_delta('24h')
1377
2743
datetime.timedelta(1)
1378
>>> string_to_delta(u'1w')
2744
>>> string_to_delta('1w')
1379
2745
datetime.timedelta(7)
1380
>>> string_to_delta(u'5m 30s')
2746
>>> string_to_delta('5m 30s')
1381
2747
datetime.timedelta(0, 330)
1382
2748
"""
2749
2750
try:
2751
return rfc3339_duration_to_delta(interval)
2752
except ValueError:
2753
pass
2754
1383
2755
timevalue = datetime.timedelta(0)
1384
2756
for s in interval.split():
1385
2757
try:
1386
suffix = unicode(s[-1])
2758
suffix = s[-1]
1387
2759
value = int(s[:-1])
1388
if suffix == u"d":
2760
if suffix == "d":
1389
2761
delta = datetime.timedelta(value)
1390
elif suffix == u"s":
2762
elif suffix == "s":
1391
2763
delta = datetime.timedelta(0, value)
1392
elif suffix == u"m":
2764
elif suffix == "m":
1393
2765
delta = datetime.timedelta(0, 0, 0, 0, value)
1394
elif suffix == u"h":
2766
elif suffix == "h":
1395
2767
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1396
elif suffix == u"w":
2768
elif suffix == "w":
1397
2769
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1398
2770
else:
1399
raise ValueError(u"Unknown suffix %r" % suffix)
1400
except (ValueError, IndexError), e:
1401
raise ValueError(e.message)
2771
raise ValueError("Unknown suffix {!r}".format(suffix))
2772
except IndexError as e:
2773
raise ValueError(*(e.args))
1402
2774
timevalue += delta
1403
2775
return timevalue
1404
2776
1405
2777
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):
2778
def daemon(nochdir=False, noclose=False):
1431
2779
"""See daemon(3). Standard BSD Unix function.
1432
2780
1433
2781
This should really exist as os.daemon, but it doesn't (yet)."""
1434
2782
if os.fork():
1435
2783
sys.exit()
1436
2784
os.setsid()
1437
2785
if not nochdir:
1438
os.chdir(u"/")
2786
os.chdir("/")
1439
2787
if os.fork():
1440
2788
sys.exit()
1441
2789
if not noclose:
1442
2790
# Close all standard open file descriptors
1443
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2791
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1444
2792
if not stat.S_ISCHR(os.fstat(null).st_mode):
1445
2793
raise OSError(errno.ENODEV,
1446
u"%s not a character device"
1447
% os.path.devnull)
2794
"{} not a character device"
2795
.format(os.devnull))
1448
2796
os.dup2(null, sys.stdin.fileno())
1449
2797
os.dup2(null, sys.stdout.fileno())
1450
2798
os.dup2(null, sys.stderr.fileno())
1453
2801
1454
2802
1455
2803
def main():
1456
2804
1457
2805
##################################################################
1458
2806
# 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
2807
2808
parser = argparse.ArgumentParser()
2809
parser.add_argument("-v", "--version", action="version",
2810
version="%(prog)s {}".format(version),
2811
help="show version number and exit")
2812
parser.add_argument("-i", "--interface", metavar="IF",
2813
help="Bind to interface IF")
2814
parser.add_argument("-a", "--address",
2815
help="Address to listen for requests on")
2816
parser.add_argument("-p", "--port", type=int,
2817
help="Port number to receive requests on")
2818
parser.add_argument("--check", action="store_true",
2819
help="Run self-test")
2820
parser.add_argument("--debug", action="store_true",
2821
help="Debug mode; run in foreground and log"
2822
" to terminal", default=None)
2823
parser.add_argument("--debuglevel", metavar="LEVEL",
2824
help="Debug level for stdout output")
2825
parser.add_argument("--priority", help="GnuTLS"
2826
" priority string (see GnuTLS documentation)")
2827
parser.add_argument("--servicename",
2828
metavar="NAME", help="Zeroconf service name")
2829
parser.add_argument("--configdir",
2830
default="/etc/mandos", metavar="DIR",
2831
help="Directory to search for configuration"
2832
" files")
2833
parser.add_argument("--no-dbus", action="store_false",
2834
dest="use_dbus", help="Do not provide D-Bus"
2835
" system bus interface", default=None)
2836
parser.add_argument("--no-ipv6", action="store_false",
2837
dest="use_ipv6", help="Do not use IPv6",
2838
default=None)
2839
parser.add_argument("--no-restore", action="store_false",
2840
dest="restore", help="Do not restore stored"
2841
" state", default=None)
2842
parser.add_argument("--socket", type=int,
2843
help="Specify a file descriptor to a network"
2844
" socket to use instead of creating one")
2845
parser.add_argument("--statedir", metavar="DIR",
2846
help="Directory to save/restore state in")
2847
parser.add_argument("--foreground", action="store_true",
2848
help="Run in foreground", default=None)
2849
parser.add_argument("--no-zeroconf", action="store_false",
2850
dest="zeroconf", help="Do not use Zeroconf",
2851
default=None)
2852
2853
options = parser.parse_args()
2854
1487
2855
if options.check:
1488
2856
import doctest
1489
doctest.testmod()
1490
sys.exit()
1491
2857
fail_count, test_count = doctest.testmod()
2858
sys.exit(os.EX_OK if fail_count == 0 else 1)
2859
1492
2860
# 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
2861
server_defaults = {"interface": "",
2862
"address": "",
2863
"port": "",
2864
"debug": "False",
2865
"priority":
2866
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2867
":+SIGN-DSA-SHA256",
2868
"servicename": "Mandos",
2869
"use_dbus": "True",
2870
"use_ipv6": "True",
2871
"debuglevel": "",
2872
"restore": "True",
2873
"socket": "",
2874
"statedir": "/var/lib/mandos",
2875
"foreground": "False",
2876
"zeroconf": "True",
2877
}
2878
1504
2879
# Parse config file for server-global settings
1505
2880
server_config = configparser.SafeConfigParser(server_defaults)
1506
2881
del server_defaults
1507
server_config.read(os.path.join(options.configdir,
1508
u"mandos.conf"))
2882
server_config.read(os.path.join(options.configdir, "mandos.conf"))
1509
2883
# Convert the SafeConfigParser object to a dict
1510
2884
server_settings = server_config.defaults()
1511
2885
# 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",
2886
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
2887
server_settings[option] = server_config.getboolean("DEFAULT",
1514
2888
option)
1515
2889
if server_settings["port"]:
1516
server_settings["port"] = server_config.getint(u"DEFAULT",
1517
u"port")
2890
server_settings["port"] = server_config.getint("DEFAULT",
2891
"port")
2892
if server_settings["socket"]:
2893
server_settings["socket"] = server_config.getint("DEFAULT",
2894
"socket")
2895
# Later, stdin will, and stdout and stderr might, be dup'ed
2896
# over with an opened os.devnull. But we don't want this to
2897
# happen with a supplied network socket.
2898
if 0 <= server_settings["socket"] <= 2:
2899
server_settings["socket"] = os.dup(server_settings
2900
["socket"])
1518
2901
del server_config
1519
2902
1520
2903
# Override the settings from the config file with command line
1521
2904
# 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"):
2905
for option in ("interface", "address", "port", "debug",
2906
"priority", "servicename", "configdir", "use_dbus",
2907
"use_ipv6", "debuglevel", "restore", "statedir",
2908
"socket", "foreground", "zeroconf"):
1525
2909
value = getattr(options, option)
1526
2910
if value is not None:
1527
2911
server_settings[option] = value
1528
2912
del options
1529
2913
# Force all strings to be unicode
1530
2914
for option in server_settings.keys():
1531
if type(server_settings[option]) is str:
1532
server_settings[option] = unicode(server_settings[option])
2915
if isinstance(server_settings[option], bytes):
2916
server_settings[option] = (server_settings[option]
2917
.decode("utf-8"))
2918
# Force all boolean options to be boolean
2919
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2920
"foreground", "zeroconf"):
2921
server_settings[option] = bool(server_settings[option])
2922
# Debug implies foreground
2923
if server_settings["debug"]:
2924
server_settings["foreground"] = True
1533
2925
# Now we have our good server settings in "server_settings"
1534
2926
1535
2927
##################################################################
1536
2928
2929
if (not server_settings["zeroconf"]
2930
and not (server_settings["port"]
2931
or server_settings["socket"] != "")):
2932
parser.error("Needs port or socket to work without Zeroconf")
2933
1537
2934
# 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
2935
debug = server_settings["debug"]
2936
debuglevel = server_settings["debuglevel"]
2937
use_dbus = server_settings["use_dbus"]
2938
use_ipv6 = server_settings["use_ipv6"]
2939
stored_state_path = os.path.join(server_settings["statedir"],
2940
stored_state_file)
2941
foreground = server_settings["foreground"]
2942
zeroconf = server_settings["zeroconf"]
2943
2944
if debug:
2945
initlogger(debug, logging.DEBUG)
2946
else:
2947
if not debuglevel:
2948
initlogger(debug)
2949
else:
2950
level = getattr(logging, debuglevel.upper())
2951
initlogger(debug, level)
2952
2953
if server_settings["servicename"] != "Mandos":
2954
syslogger.setFormatter(
2955
logging.Formatter('Mandos ({}) [%(process)d]:'
2956
' %(levelname)s: %(message)s'.format(
2957
server_settings["servicename"])))
2958
1552
2959
# 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
2960
client_config = configparser.SafeConfigParser(Client
2961
.client_defaults)
2962
client_config.read(os.path.join(server_settings["configdir"],
2963
"clients.conf"))
2964
1562
2965
global mandos_dbus_service
1563
2966
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
use_ipv6=use_ipv6,
1570
gnutls_priority=
1571
server_settings[u"priority"],
1572
use_dbus=use_dbus)
1573
pidfilename = u"/var/run/mandos.pid"
1574
try:
1575
pidfile = open(pidfilename, u"w")
1576
except IOError:
1577
logger.error(u"Could not open file %r", pidfilename)
1578
1579
try:
1580
uid = pwd.getpwnam(u"_mandos").pw_uid
1581
gid = pwd.getpwnam(u"_mandos").pw_gid
1582
except KeyError:
1583
try:
1584
uid = pwd.getpwnam(u"mandos").pw_uid
1585
gid = pwd.getpwnam(u"mandos").pw_gid
2967
2968
socketfd = None
2969
if server_settings["socket"] != "":
2970
socketfd = server_settings["socket"]
2971
tcp_server = MandosServer(
2972
(server_settings["address"], server_settings["port"]),
2973
ClientHandler,
2974
interface=(server_settings["interface"] or None),
2975
use_ipv6=use_ipv6,
2976
gnutls_priority=server_settings["priority"],
2977
use_dbus=use_dbus,
2978
socketfd=socketfd)
2979
if not foreground:
2980
pidfilename = "/run/mandos.pid"
2981
if not os.path.isdir("/run/."):
2982
pidfilename = "/var/run/mandos.pid"
2983
pidfile = None
2984
try:
2985
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2986
except IOError as e:
2987
logger.error("Could not open file %r", pidfilename,
2988
exc_info=e)
2989
2990
for name, group in (("_mandos", "_mandos"),
2991
("mandos", "mandos"),
2992
("nobody", "nogroup")):
2993
try:
2994
uid = pwd.getpwnam(name).pw_uid
2995
gid = pwd.getpwnam(group).pw_gid
2996
break
1586
2997
except KeyError:
1587
try:
1588
uid = pwd.getpwnam(u"nobody").pw_uid
1589
gid = pwd.getpwnam(u"nobody").pw_gid
1590
except KeyError:
1591
uid = 65534
1592
gid = 65534
2998
continue
2999
else:
3000
uid = 65534
3001
gid = 65534
1593
3002
try:
1594
3003
os.setgid(gid)
1595
3004
os.setuid(uid)
1596
except OSError, error:
1597
if error[0] != errno.EPERM:
1598
raise error
1599
1600
# Enable all possible GnuTLS debugging
3005
if debug:
3006
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3007
gid))
3008
except OSError as error:
3009
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3010
.format(uid, gid, os.strerror(error.errno)))
3011
if error.errno != errno.EPERM:
3012
raise
3013
1601
3014
if debug:
3015
# Enable all possible GnuTLS debugging
3016
1602
3017
# "Use a log level over 10 to enable all debugging options."
1603
3018
# - GnuTLS manual
1604
gnutls.library.functions.gnutls_global_set_log_level(11)
1605
1606
@gnutls.library.types.gnutls_log_func
3019
gnutls.global_set_log_level(11)
3020
3021
@gnutls.log_func
1607
3022
def debug_gnutls(level, string):
1608
logger.debug(u"GnuTLS: %s", string[:-1])
1609
1610
(gnutls.library.functions
1611
.gnutls_global_set_log_function(debug_gnutls))
1612
3023
logger.debug("GnuTLS: %s", string[:-1])
3024
3025
gnutls.global_set_log_function(debug_gnutls)
3026
3027
# Redirect stdin so all checkers get /dev/null
3028
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
3029
os.dup2(null, sys.stdin.fileno())
3030
if null > 2:
3031
os.close(null)
3032
3033
# Need to fork before connecting to D-Bus
3034
if not foreground:
3035
# Close all input and output, do double fork, etc.
3036
daemon()
3037
3038
# multiprocessing will use threads, so before we use GLib we need
3039
# to inform GLib that threads will be used.
3040
GLib.threads_init()
3041
1613
3042
global main_loop
1614
3043
# From the Avahi example code
1615
DBusGMainLoop(set_as_default=True )
1616
main_loop = gobject.MainLoop()
3044
DBusGMainLoop(set_as_default=True)
3045
main_loop = GLib.MainLoop()
1617
3046
bus = dbus.SystemBus()
1618
3047
# End of Avahi example code
1619
3048
if use_dbus:
1620
3049
try:
1621
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
1622
bus, do_not_queue=True)
1623
except dbus.exceptions.NameExistsException, e:
1624
logger.error(unicode(e) + u", disabling D-Bus")
3050
bus_name = dbus.service.BusName("se.recompile.Mandos",
3051
bus,
3052
do_not_queue=True)
3053
old_bus_name = dbus.service.BusName(
3054
"se.bsnet.fukt.Mandos", bus,
3055
do_not_queue=True)
3056
except dbus.exceptions.DBusException as e:
3057
logger.error("Disabling D-Bus:", exc_info=e)
1625
3058
use_dbus = False
1626
server_settings[u"use_dbus"] = False
3059
server_settings["use_dbus"] = False
1627
3060
tcp_server.use_dbus = False
1628
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1629
service = AvahiService(name = server_settings[u"servicename"],
1630
servicetype = u"_mandos._tcp",
1631
protocol = protocol, bus = bus)
1632
if server_settings["interface"]:
1633
service.interface = (if_nametoindex
1634
(str(server_settings[u"interface"])))
1635
3061
if zeroconf:
3062
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3063
service = AvahiServiceToSyslog(
3064
name=server_settings["servicename"],
3065
servicetype="_mandos._tcp",
3066
protocol=protocol,
3067
bus=bus)
3068
if server_settings["interface"]:
3069
service.interface = if_nametoindex(
3070
server_settings["interface"].encode("utf-8"))
3071
3072
global multiprocessing_manager
3073
multiprocessing_manager = multiprocessing.Manager()
3074
1636
3075
client_class = Client
1637
3076
if use_dbus:
1638
client_class = functools.partial(ClientDBus, bus = bus)
1639
tcp_server.clients.update(set(
1640
client_class(name = section,
1641
config= dict(client_config.items(section)))
1642
for section in client_config.sections()))
3077
client_class = functools.partial(ClientDBus, bus=bus)
3078
3079
client_settings = Client.config_parser(client_config)
3080
old_client_settings = {}
3081
clients_data = {}
3082
3083
# This is used to redirect stdout and stderr for checker processes
3084
global wnull
3085
wnull = open(os.devnull, "w") # A writable /dev/null
3086
# Only used if server is running in foreground but not in debug
3087
# mode
3088
if debug or not foreground:
3089
wnull.close()
3090
3091
# Get client data and settings from last running state.
3092
if server_settings["restore"]:
3093
try:
3094
with open(stored_state_path, "rb") as stored_state:
3095
if sys.version_info.major == 2:
3096
clients_data, old_client_settings = pickle.load(
3097
stored_state)
3098
else:
3099
bytes_clients_data, bytes_old_client_settings = (
3100
pickle.load(stored_state, encoding="bytes"))
3101
# Fix bytes to strings
3102
# clients_data
3103
# .keys()
3104
clients_data = {(key.decode("utf-8")
3105
if isinstance(key, bytes)
3106
else key): value
3107
for key, value in
3108
bytes_clients_data.items()}
3109
del bytes_clients_data
3110
for key in clients_data:
3111
value = {(k.decode("utf-8")
3112
if isinstance(k, bytes) else k): v
3113
for k, v in
3114
clients_data[key].items()}
3115
clients_data[key] = value
3116
# .client_structure
3117
value["client_structure"] = [
3118
(s.decode("utf-8")
3119
if isinstance(s, bytes)
3120
else s) for s in
3121
value["client_structure"]]
3122
# .name & .host
3123
for k in ("name", "host"):
3124
if isinstance(value[k], bytes):
3125
value[k] = value[k].decode("utf-8")
3126
# old_client_settings
3127
# .keys()
3128
old_client_settings = {
3129
(key.decode("utf-8")
3130
if isinstance(key, bytes)
3131
else key): value
3132
for key, value in
3133
bytes_old_client_settings.items()}
3134
del bytes_old_client_settings
3135
# .host
3136
for value in old_client_settings.values():
3137
if isinstance(value["host"], bytes):
3138
value["host"] = (value["host"]
3139
.decode("utf-8"))
3140
os.remove(stored_state_path)
3141
except IOError as e:
3142
if e.errno == errno.ENOENT:
3143
logger.warning("Could not load persistent state:"
3144
" {}".format(os.strerror(e.errno)))
3145
else:
3146
logger.critical("Could not load persistent state:",
3147
exc_info=e)
3148
raise
3149
except EOFError as e:
3150
logger.warning("Could not load persistent state: "
3151
"EOFError:",
3152
exc_info=e)
3153
3154
with PGPEngine() as pgp:
3155
for client_name, client in clients_data.items():
3156
# Skip removed clients
3157
if client_name not in client_settings:
3158
continue
3159
3160
# Decide which value to use after restoring saved state.
3161
# We have three different values: Old config file,
3162
# new config file, and saved state.
3163
# New config value takes precedence if it differs from old
3164
# config value, otherwise use saved state.
3165
for name, value in client_settings[client_name].items():
3166
try:
3167
# For each value in new config, check if it
3168
# differs from the old config value (Except for
3169
# the "secret" attribute)
3170
if (name != "secret"
3171
and (value !=
3172
old_client_settings[client_name][name])):
3173
client[name] = value
3174
except KeyError:
3175
pass
3176
3177
# Clients who has passed its expire date can still be
3178
# enabled if its last checker was successful. A Client
3179
# whose checker succeeded before we stored its state is
3180
# assumed to have successfully run all checkers during
3181
# downtime.
3182
if client["enabled"]:
3183
if datetime.datetime.utcnow() >= client["expires"]:
3184
if not client["last_checked_ok"]:
3185
logger.warning(
3186
"disabling client {} - Client never "
3187
"performed a successful checker".format(
3188
client_name))
3189
client["enabled"] = False
3190
elif client["last_checker_status"] != 0:
3191
logger.warning(
3192
"disabling client {} - Client last"
3193
" checker failed with error code"
3194
" {}".format(
3195
client_name,
3196
client["last_checker_status"]))
3197
client["enabled"] = False
3198
else:
3199
client["expires"] = (
3200
datetime.datetime.utcnow()
3201
+ client["timeout"])
3202
logger.debug("Last checker succeeded,"
3203
" keeping {} enabled".format(
3204
client_name))
3205
try:
3206
client["secret"] = pgp.decrypt(
3207
client["encrypted_secret"],
3208
client_settings[client_name]["secret"])
3209
except PGPError:
3210
# If decryption fails, we use secret from new settings
3211
logger.debug("Failed to decrypt {} old secret".format(
3212
client_name))
3213
client["secret"] = (client_settings[client_name]
3214
["secret"])
3215
3216
# Add/remove clients based on new changes made to config
3217
for client_name in (set(old_client_settings)
3218
- set(client_settings)):
3219
del clients_data[client_name]
3220
for client_name in (set(client_settings)
3221
- set(old_client_settings)):
3222
clients_data[client_name] = client_settings[client_name]
3223
3224
# Create all client objects
3225
for client_name, client in clients_data.items():
3226
tcp_server.clients[client_name] = client_class(
3227
name=client_name,
3228
settings=client,
3229
server_settings=server_settings)
3230
1643
3231
if not tcp_server.clients:
1644
logger.warning(u"No clients defined")
1645
1646
if debug:
1647
# Redirect stdin so all checkers get /dev/null
1648
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1649
os.dup2(null, sys.stdin.fileno())
1650
if null > 2:
1651
os.close(null)
1652
else:
1653
# No console logging
1654
logger.removeHandler(console)
1655
# Close all input and output, do double fork, etc.
1656
daemon()
1657
1658
try:
1659
with pidfile:
3232
logger.warning("No clients defined")
3233
3234
if not foreground:
3235
if pidfile is not None:
1660
3236
pid = os.getpid()
1661
pidfile.write(str(pid) + "\n")
3237
try:
3238
with pidfile:
3239
print(pid, file=pidfile)
3240
except IOError:
3241
logger.error("Could not write to file %r with PID %d",
3242
pidfilename, pid)
1662
3243
del pidfile
1663
except IOError:
1664
logger.error(u"Could not write to file %r with PID %d",
1665
pidfilename, pid)
1666
except NameError:
1667
# "pidfile" was never created
1668
pass
1669
del pidfilename
1670
1671
if not debug:
1672
signal.signal(signal.SIGINT, signal.SIG_IGN)
1673
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1674
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1675
3244
del pidfilename
3245
3246
for termsig in (signal.SIGHUP, signal.SIGTERM):
3247
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3248
lambda: main_loop.quit() and False)
3249
1676
3250
if use_dbus:
1677
class MandosDBusService(dbus.service.Object):
3251
3252
@alternate_dbus_interfaces(
3253
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3254
class MandosDBusService(DBusObjectWithObjectManager):
1678
3255
"""A D-Bus proxy object"""
3256
1679
3257
def __init__(self):
1680
dbus.service.Object.__init__(self, bus, u"/")
1681
_interface = u"se.bsnet.fukt.Mandos"
1682
1683
@dbus.service.signal(_interface, signature=u"o")
3258
dbus.service.Object.__init__(self, bus, "/")
3259
3260
_interface = "se.recompile.Mandos"
3261
3262
@dbus.service.signal(_interface, signature="o")
1684
3263
def ClientAdded(self, objpath):
1685
3264
"D-Bus signal"
1686
3265
pass
1687
1688
@dbus.service.signal(_interface, signature=u"ss")
3266
3267
@dbus.service.signal(_interface, signature="ss")
1689
3268
def ClientNotFound(self, fingerprint, address):
1690
3269
"D-Bus signal"
1691
3270
pass
1692
1693
@dbus.service.signal(_interface, signature=u"os")
3271
3272
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3273
"true"})
3274
@dbus.service.signal(_interface, signature="os")
1694
3275
def ClientRemoved(self, objpath, name):
1695
3276
"D-Bus signal"
1696
3277
pass
1697
1698
@dbus.service.method(_interface, out_signature=u"ao")
3278
3279
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3280
"true"})
3281
@dbus.service.method(_interface, out_signature="ao")
1699
3282
def GetAllClients(self):
1700
3283
"D-Bus method"
1701
return dbus.Array(c.dbus_object_path
1702
for c in tcp_server.clients)
1703
3284
return dbus.Array(c.dbus_object_path for c in
3285
tcp_server.clients.values())
3286
3287
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3288
"true"})
1704
3289
@dbus.service.method(_interface,
1705
out_signature=u"a{oa{sv}}")
3290
out_signature="a{oa{sv}}")
1706
3291
def GetAllClientsWithProperties(self):
1707
3292
"D-Bus method"
1708
3293
return dbus.Dictionary(
1709
((c.dbus_object_path, c.GetAll(u""))
1710
for c in tcp_server.clients),
1711
signature=u"oa{sv}")
1712
1713
@dbus.service.method(_interface, in_signature=u"o")
3294
{c.dbus_object_path: c.GetAll(
3295
"se.recompile.Mandos.Client")
3296
for c in tcp_server.clients.values()},
3297
signature="oa{sv}")
3298
3299
@dbus.service.method(_interface, in_signature="o")
1714
3300
def RemoveClient(self, object_path):
1715
3301
"D-Bus method"
1716
for c in tcp_server.clients:
3302
for c in tcp_server.clients.values():
1717
3303
if c.dbus_object_path == object_path:
1718
tcp_server.clients.remove(c)
3304
del tcp_server.clients[c.name]
1719
3305
c.remove_from_connection()
1720
# Don't signal anything except ClientRemoved
3306
# Don't signal the disabling
1721
3307
c.disable(quiet=True)
1722
# Emit D-Bus signal
1723
self.ClientRemoved(object_path, c.name)
3308
# Emit D-Bus signal for removal
3309
self.client_removed_signal(c)
1724
3310
return
1725
3311
raise KeyError(object_path)
1726
3312
1727
3313
del _interface
1728
3314
3315
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3316
out_signature="a{oa{sa{sv}}}")
3317
def GetManagedObjects(self):
3318
"""D-Bus method"""
3319
return dbus.Dictionary(
3320
{client.dbus_object_path:
3321
dbus.Dictionary(
3322
{interface: client.GetAll(interface)
3323
for interface in
3324
client._get_all_interface_names()})
3325
for client in tcp_server.clients.values()})
3326
3327
def client_added_signal(self, client):
3328
"""Send the new standard signal and the old signal"""
3329
if use_dbus:
3330
# New standard signal
3331
self.InterfacesAdded(
3332
client.dbus_object_path,
3333
dbus.Dictionary(
3334
{interface: client.GetAll(interface)
3335
for interface in
3336
client._get_all_interface_names()}))
3337
# Old signal
3338
self.ClientAdded(client.dbus_object_path)
3339
3340
def client_removed_signal(self, client):
3341
"""Send the new standard signal and the old signal"""
3342
if use_dbus:
3343
# New standard signal
3344
self.InterfacesRemoved(
3345
client.dbus_object_path,
3346
client._get_all_interface_names())
3347
# Old signal
3348
self.ClientRemoved(client.dbus_object_path,
3349
client.name)
3350
1729
3351
mandos_dbus_service = MandosDBusService()
1730
3352
3353
# Save modules to variables to exempt the modules from being
3354
# unloaded before the function registered with atexit() is run.
3355
mp = multiprocessing
3356
wn = wnull
3357
1731
3358
def cleanup():
1732
3359
"Cleanup function; run on exit"
1733
service.cleanup()
1734
3360
if zeroconf:
3361
service.cleanup()
3362
3363
mp.active_children()
3364
wn.close()
3365
if not (tcp_server.clients or client_settings):
3366
return
3367
3368
# Store client before exiting. Secrets are encrypted with key
3369
# based on what config file has. If config file is
3370
# removed/edited, old secret will thus be unrecovable.
3371
clients = {}
3372
with PGPEngine() as pgp:
3373
for client in tcp_server.clients.values():
3374
key = client_settings[client.name]["secret"]
3375
client.encrypted_secret = pgp.encrypt(client.secret,
3376
key)
3377
client_dict = {}
3378
3379
# A list of attributes that can not be pickled
3380
# + secret.
3381
exclude = {"bus", "changedstate", "secret",
3382
"checker", "server_settings"}
3383
for name, typ in inspect.getmembers(dbus.service
3384
.Object):
3385
exclude.add(name)
3386
3387
client_dict["encrypted_secret"] = (client
3388
.encrypted_secret)
3389
for attr in client.client_structure:
3390
if attr not in exclude:
3391
client_dict[attr] = getattr(client, attr)
3392
3393
clients[client.name] = client_dict
3394
del client_settings[client.name]["secret"]
3395
3396
try:
3397
with tempfile.NamedTemporaryFile(
3398
mode='wb',
3399
suffix=".pickle",
3400
prefix='clients-',
3401
dir=os.path.dirname(stored_state_path),
3402
delete=False) as stored_state:
3403
pickle.dump((clients, client_settings), stored_state,
3404
protocol=2)
3405
tempname = stored_state.name
3406
os.rename(tempname, stored_state_path)
3407
except (IOError, OSError) as e:
3408
if not debug:
3409
try:
3410
os.remove(tempname)
3411
except NameError:
3412
pass
3413
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3414
logger.warning("Could not save persistent state: {}"
3415
.format(os.strerror(e.errno)))
3416
else:
3417
logger.warning("Could not save persistent state:",
3418
exc_info=e)
3419
raise
3420
3421
# Delete all clients, and settings from config
1735
3422
while tcp_server.clients:
1736
client = tcp_server.clients.pop()
3423
name, client = tcp_server.clients.popitem()
1737
3424
if use_dbus:
1738
3425
client.remove_from_connection()
1739
client.disable_hook = None
1740
# Don't signal anything except ClientRemoved
3426
# Don't signal the disabling
1741
3427
client.disable(quiet=True)
3428
# Emit D-Bus signal for removal
1742
3429
if use_dbus:
1743
# Emit D-Bus signal
1744
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
1745
client.name)
1746
3430
mandos_dbus_service.client_removed_signal(client)
3431
client_settings.clear()
3432
1747
3433
atexit.register(cleanup)
1748
1749
for client in tcp_server.clients:
3434
3435
for client in tcp_server.clients.values():
1750
3436
if use_dbus:
1751
# Emit D-Bus signal
1752
mandos_dbus_service.ClientAdded(client.dbus_object_path)
1753
client.enable()
1754
3437
# Emit D-Bus signal for adding
3438
mandos_dbus_service.client_added_signal(client)
3439
# Need to initiate checking of clients
3440
if client.enabled:
3441
client.init_checker()
3442
1755
3443
tcp_server.enable()
1756
3444
tcp_server.server_activate()
1757
3445
1758
3446
# Find out what port we got
1759
service.port = tcp_server.socket.getsockname()[1]
3447
if zeroconf:
3448
service.port = tcp_server.socket.getsockname()[1]
1760
3449
if use_ipv6:
1761
logger.info(u"Now listening on address %r, port %d,"
1762
" flowinfo %d, scope_id %d"
1763
% tcp_server.socket.getsockname())
3450
logger.info("Now listening on address %r, port %d,"
3451
" flowinfo %d, scope_id %d",
3452
*tcp_server.socket.getsockname())
1764
3453
else: # IPv4
1765
logger.info(u"Now listening on address %r, port %d"
1766
% tcp_server.socket.getsockname())
1767
1768
#service.interface = tcp_server.socket.getsockname()[3]
1769
3454
logger.info("Now listening on address %r, port %d",
3455
*tcp_server.socket.getsockname())
3456
3457
# service.interface = tcp_server.socket.getsockname()[3]
3458
1770
3459
try:
1771
# From the Avahi example code
1772
try:
1773
service.activate()
1774
except dbus.exceptions.DBusException, error:
1775
logger.critical(u"DBusException: %s", error)
1776
cleanup()
1777
sys.exit(1)
1778
# End of Avahi example code
1779
1780
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
1781
lambda *args, **kwargs:
1782
(tcp_server.handle_request
1783
(*args[2:], **kwargs) or True))
1784
1785
logger.debug(u"Starting main loop")
3460
if zeroconf:
3461
# From the Avahi example code
3462
try:
3463
service.activate()
3464
except dbus.exceptions.DBusException as error:
3465
logger.critical("D-Bus Exception", exc_info=error)
3466
cleanup()
3467
sys.exit(1)
3468
# End of Avahi example code
3469
3470
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3471
lambda *args, **kwargs:
3472
(tcp_server.handle_request
3473
(*args[2:], **kwargs) or True))
3474
3475
logger.debug("Starting main loop")
1786
3476
main_loop.run()
1787
except AvahiError, error:
1788
logger.critical(u"AvahiError: %s", error)
3477
except AvahiError as error:
3478
logger.critical("Avahi Error", exc_info=error)
1789
3479
cleanup()
1790
3480
sys.exit(1)
1791
3481
except KeyboardInterrupt:
1792
3482
if debug:
1793
print >> sys.stderr
1794
logger.debug(u"Server received KeyboardInterrupt")
1795
logger.debug(u"Server exiting")
3483
print("", file=sys.stderr)
3484
logger.debug("Server received KeyboardInterrupt")
3485
logger.debug("Server exiting")
1796
3486
# Must run before the D-Bus bus name gets deregistered
1797
3487
cleanup()
1798
3488
3489
1799
3490
if __name__ == '__main__':
1800
3491
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0