To get this branch, use:
bzr branch
http://bzr.recompile.se/loggerhead/mandos/trunk
« back to all changes in this revision
Viewing changes to mandos
- browse files at revision 237.4.80
- compare with another revision
- download diff
- download tarball
- view history from revision 237.4.80
- Committer: Teddy Hogeborn
- Date: 2016-06-23 20:10:40 UTC
- mto: This revision was merged to the branch mainline in revision 861.
- Revision ID: teddy@recompile.se-20160623201040-33k2tpdbnxjqfjcp
Tags: version-1.7.10-1
* Makefile (version): Change to 1.7.10.
* NEWS (Version 1.7.10): Add new entry.
* debian/changelog (1.7.10-1): - '' -
* NEWS (Version 1.7.10): Add new entry.
* debian/changelog (1.7.10-1): - '' -
- files added:
- DBUS-API
- debian/source
- debian/upstream
- network-hooks.d
- plugin-helpers
- files removed:
- plugins.d/plymouth
- files modified:
- .bzrignore
added
removed
mandos
11
11
# "AvahiService" class, and some lines in "main".
12
12
#
13
13
# Everything else is
14
# Copyright © 2008,2009 Teddy Hogeborn
15
# Copyright © 2008,2009 Björn Påhlsson
14
# Copyright © 2008-2016 Teddy Hogeborn
15
# Copyright © 2008-2016 Björn Påhlsson
16
16
#
17
17
# This program is free software: you can redistribute it and/or modify
18
18
# it under the terms of the GNU General Public License as published by
28
28
# along with this program. If not, see
29
29
# <http://www.gnu.org/licenses/>.
30
30
#
31
# Contact the authors at <mandos@fukt.bsnet.se>.
31
# Contact the authors at <mandos@recompile.se>.
32
32
#
33
33
34
from __future__ import division, with_statement, absolute_import
35
36
import SocketServer as socketserver
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
68
try:
69
import cPickle as pickle
70
except ImportError:
71
import pickle
63
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.getLogger(u'mandos')
87
logger = logging.Logger(u'mandos')
88
syslogger = (logging.handlers.SysLogHandler
89
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
90
address = "/dev/log"))
91
syslogger.setFormatter(logging.Formatter
92
(u'Mandos [%(process)d]: %(levelname)s:'
93
u' %(message)s'))
94
logger.addHandler(syslogger)
95
96
console = logging.StreamHandler()
97
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
98
u' %(levelname)s:'
99
u' %(message)s'))
100
logger.addHandler(console)
100
# In Python 2.7 it seems to have been removed entirely.
101
# Try running the C preprocessor:
102
try:
103
cc = subprocess.Popen(["cc", "--language=c", "-E",
104
"/dev/stdin"],
105
stdin=subprocess.PIPE,
106
stdout=subprocess.PIPE)
107
stdout = cc.communicate(
108
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
109
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
110
except (OSError, ValueError, IndexError):
111
# No value found
112
SO_BINDTODEVICE = None
113
114
if sys.version_info.major == 2:
115
str = unicode
116
117
version = "1.7.10"
118
stored_state_file = "clients.pickle"
119
120
logger = logging.getLogger()
121
syslogger = None
122
123
try:
124
if_nametoindex = ctypes.cdll.LoadLibrary(
125
ctypes.util.find_library("c")).if_nametoindex
126
except (OSError, AttributeError):
127
128
def if_nametoindex(interface):
129
"Get an interface index the hard way, i.e. using fcntl()"
130
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
131
with contextlib.closing(socket.socket()) as s:
132
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
133
struct.pack(b"16s16x", interface))
134
interface_index = struct.unpack("I", ifreq[16:20])[0]
135
return interface_index
136
137
138
def copy_function(func):
139
"""Make a copy of a function"""
140
if sys.version_info.major == 2:
141
return types.FunctionType(func.func_code,
142
func.func_globals,
143
func.func_name,
144
func.func_defaults,
145
func.func_closure)
146
else:
147
return types.FunctionType(func.__code__,
148
func.__globals__,
149
func.__name__,
150
func.__defaults__,
151
func.__closure__)
152
153
154
def initlogger(debug, level=logging.WARNING):
155
"""init logger and add loglevel"""
156
157
global syslogger
158
syslogger = (logging.handlers.SysLogHandler(
159
facility = logging.handlers.SysLogHandler.LOG_DAEMON,
160
address = "/dev/log"))
161
syslogger.setFormatter(logging.Formatter
162
('Mandos [%(process)d]: %(levelname)s:'
163
' %(message)s'))
164
logger.addHandler(syslogger)
165
166
if debug:
167
console = logging.StreamHandler()
168
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
169
' [%(process)d]:'
170
' %(levelname)s:'
171
' %(message)s'))
172
logger.addHandler(console)
173
logger.setLevel(level)
174
175
176
class PGPError(Exception):
177
"""Exception if encryption/decryption fails"""
178
pass
179
180
181
class PGPEngine(object):
182
"""A simple class for OpenPGP symmetric encryption & decryption"""
183
184
def __init__(self):
185
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
186
self.gpg = "gpg"
187
try:
188
output = subprocess.check_output(["gpgconf"])
189
for line in output.splitlines():
190
name, text, path = line.split(b":")
191
if name == "gpg":
192
self.gpg = path
193
break
194
except OSError as e:
195
if e.errno != errno.ENOENT:
196
raise
197
self.gnupgargs = ['--batch',
198
'--homedir', self.tempdir,
199
'--force-mdc',
200
'--quiet']
201
# Only GPG version 1 has the --no-use-agent option.
202
if self.gpg == "gpg" or self.gpg.endswith("/gpg"):
203
self.gnupgargs.append("--no-use-agent")
204
205
def __enter__(self):
206
return self
207
208
def __exit__(self, exc_type, exc_value, traceback):
209
self._cleanup()
210
return False
211
212
def __del__(self):
213
self._cleanup()
214
215
def _cleanup(self):
216
if self.tempdir is not None:
217
# Delete contents of tempdir
218
for root, dirs, files in os.walk(self.tempdir,
219
topdown = False):
220
for filename in files:
221
os.remove(os.path.join(root, filename))
222
for dirname in dirs:
223
os.rmdir(os.path.join(root, dirname))
224
# Remove tempdir
225
os.rmdir(self.tempdir)
226
self.tempdir = None
227
228
def password_encode(self, password):
229
# Passphrase can not be empty and can not contain newlines or
230
# NUL bytes. So we prefix it and hex encode it.
231
encoded = b"mandos" + binascii.hexlify(password)
232
if len(encoded) > 2048:
233
# GnuPG can't handle long passwords, so encode differently
234
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
235
.replace(b"\n", b"\\n")
236
.replace(b"\0", b"\\x00"))
237
return encoded
238
239
def encrypt(self, data, password):
240
passphrase = self.password_encode(password)
241
with tempfile.NamedTemporaryFile(
242
dir=self.tempdir) as passfile:
243
passfile.write(passphrase)
244
passfile.flush()
245
proc = subprocess.Popen([self.gpg, '--symmetric',
246
'--passphrase-file',
247
passfile.name]
248
+ self.gnupgargs,
249
stdin = subprocess.PIPE,
250
stdout = subprocess.PIPE,
251
stderr = subprocess.PIPE)
252
ciphertext, err = proc.communicate(input = data)
253
if proc.returncode != 0:
254
raise PGPError(err)
255
return ciphertext
256
257
def decrypt(self, data, password):
258
passphrase = self.password_encode(password)
259
with tempfile.NamedTemporaryFile(
260
dir = self.tempdir) as passfile:
261
passfile.write(passphrase)
262
passfile.flush()
263
proc = subprocess.Popen([self.gpg, '--decrypt',
264
'--passphrase-file',
265
passfile.name]
266
+ self.gnupgargs,
267
stdin = subprocess.PIPE,
268
stdout = subprocess.PIPE,
269
stderr = subprocess.PIPE)
270
decrypted_plaintext, err = proc.communicate(input = data)
271
if proc.returncode != 0:
272
raise PGPError(err)
273
return decrypted_plaintext
274
275
# Pretend that we have an Avahi module
276
class Avahi(object):
277
"""This isn't so much a class as it is a module-like namespace.
278
It is instantiated once, and simulates having an Avahi module."""
279
IF_UNSPEC = -1 # avahi-common/address.h
280
PROTO_UNSPEC = -1 # avahi-common/address.h
281
PROTO_INET = 0 # avahi-common/address.h
282
PROTO_INET6 = 1 # avahi-common/address.h
283
DBUS_NAME = "org.freedesktop.Avahi"
284
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
285
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
286
DBUS_PATH_SERVER = "/"
287
def string_array_to_txt_array(self, t):
288
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
289
for s in t), signature="ay")
290
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
291
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
292
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
293
SERVER_INVALID = 0 # avahi-common/defs.h
294
SERVER_REGISTERING = 1 # avahi-common/defs.h
295
SERVER_RUNNING = 2 # avahi-common/defs.h
296
SERVER_COLLISION = 3 # avahi-common/defs.h
297
SERVER_FAILURE = 4 # avahi-common/defs.h
298
avahi = Avahi()
101
299
102
300
class AvahiError(Exception):
103
301
def __init__(self, value, *args, **kwargs):
104
302
self.value = value
105
super(AvahiError, self).__init__(value, *args, **kwargs)
106
def __unicode__(self):
107
return unicode(repr(self.value))
303
return super(AvahiError, self).__init__(value, *args,
304
**kwargs)
305
108
306
109
307
class AvahiServiceError(AvahiError):
110
308
pass
111
309
310
112
311
class AvahiGroupError(AvahiError):
113
312
pass
114
313
119
318
Attributes:
120
319
interface: integer; avahi.IF_UNSPEC or an interface index.
121
320
Used to optionally bind to the specified interface.
122
name: string; Example: u'Mandos'
123
type: string; Example: u'_mandos._tcp'.
124
See <http://www.dns-sd.org/ServiceTypes.html>
321
name: string; Example: 'Mandos'
322
type: string; Example: '_mandos._tcp'.
323
See <https://www.iana.org/assignments/service-names-port-numbers>
125
324
port: integer; what port to announce
126
325
TXT: list of strings; TXT record for the service
127
326
domain: string; Domain to publish on, default to .local if empty.
133
332
server: D-Bus Server
134
333
bus: dbus.SystemBus()
135
334
"""
136
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
137
servicetype = None, port = None, TXT = None,
138
domain = u"", host = u"", max_renames = 32768,
139
protocol = avahi.PROTO_UNSPEC, bus = None):
335
336
def __init__(self,
337
interface = avahi.IF_UNSPEC,
338
name = None,
339
servicetype = None,
340
port = None,
341
TXT = None,
342
domain = "",
343
host = "",
344
max_renames = 32768,
345
protocol = avahi.PROTO_UNSPEC,
346
bus = None):
140
347
self.interface = interface
141
348
self.name = name
142
349
self.type = servicetype
150
357
self.group = None # our entry group
151
358
self.server = None
152
359
self.bus = bus
153
def rename(self):
360
self.entry_group_state_changed_match = None
361
362
def rename(self, remove=True):
154
363
"""Derived from the Avahi example code"""
155
364
if self.rename_count >= self.max_renames:
156
logger.critical(u"No suitable Zeroconf service name found"
157
u" after %i retries, exiting.",
365
logger.critical("No suitable Zeroconf service name found"
366
" after %i retries, exiting.",
158
367
self.rename_count)
159
raise AvahiServiceError(u"Too many renames")
160
self.name = unicode(self.server.GetAlternativeServiceName(self.name))
161
logger.info(u"Changing Zeroconf service name to %r ...",
368
raise AvahiServiceError("Too many renames")
369
self.name = str(
370
self.server.GetAlternativeServiceName(self.name))
371
self.rename_count += 1
372
logger.info("Changing Zeroconf service name to %r ...",
162
373
self.name)
163
syslogger.setFormatter(logging.Formatter
164
(u'Mandos (%s) [%%(process)d]:'
165
u' %%(levelname)s: %%(message)s'
166
% self.name))
167
self.remove()
168
self.add()
169
self.rename_count += 1
374
if remove:
375
self.remove()
376
try:
377
self.add()
378
except dbus.exceptions.DBusException as error:
379
if (error.get_dbus_name()
380
== "org.freedesktop.Avahi.CollisionError"):
381
logger.info("Local Zeroconf service name collision.")
382
return self.rename(remove=False)
383
else:
384
logger.critical("D-Bus Exception", exc_info=error)
385
self.cleanup()
386
os._exit(1)
387
170
388
def remove(self):
171
389
"""Derived from the Avahi example code"""
390
if self.entry_group_state_changed_match is not None:
391
self.entry_group_state_changed_match.remove()
392
self.entry_group_state_changed_match = None
172
393
if self.group is not None:
173
394
self.group.Reset()
395
174
396
def add(self):
175
397
"""Derived from the Avahi example code"""
398
self.remove()
176
399
if self.group is None:
177
400
self.group = dbus.Interface(
178
401
self.bus.get_object(avahi.DBUS_NAME,
179
402
self.server.EntryGroupNew()),
180
403
avahi.DBUS_INTERFACE_ENTRY_GROUP)
181
self.group.connect_to_signal('StateChanged',
182
self
183
.entry_group_state_changed)
184
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
404
self.entry_group_state_changed_match = (
405
self.group.connect_to_signal(
406
'StateChanged', self.entry_group_state_changed))
407
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
185
408
self.name, self.type)
186
409
self.group.AddService(
187
410
self.interface,
192
415
dbus.UInt16(self.port),
193
416
avahi.string_array_to_txt_array(self.TXT))
194
417
self.group.Commit()
418
195
419
def entry_group_state_changed(self, state, error):
196
420
"""Derived from the Avahi example code"""
197
logger.debug(u"Avahi state change: %i", state)
421
logger.debug("Avahi entry group state change: %i", state)
198
422
199
423
if state == avahi.ENTRY_GROUP_ESTABLISHED:
200
logger.debug(u"Zeroconf service established.")
424
logger.debug("Zeroconf service established.")
201
425
elif state == avahi.ENTRY_GROUP_COLLISION:
202
logger.warning(u"Zeroconf service name collision.")
426
logger.info("Zeroconf service name collision.")
203
427
self.rename()
204
428
elif state == avahi.ENTRY_GROUP_FAILURE:
205
logger.critical(u"Avahi: Error in group state changed %s",
206
unicode(error))
207
raise AvahiGroupError(u"State changed: %s"
208
% unicode(error))
429
logger.critical("Avahi: Error in group state changed %s",
430
str(error))
431
raise AvahiGroupError("State changed: {!s}".format(error))
432
209
433
def cleanup(self):
210
434
"""Derived from the Avahi example code"""
211
435
if self.group is not None:
212
self.group.Free()
436
try:
437
self.group.Free()
438
except (dbus.exceptions.UnknownMethodException,
439
dbus.exceptions.DBusException):
440
pass
213
441
self.group = None
214
def server_state_changed(self, state):
442
self.remove()
443
444
def server_state_changed(self, state, error=None):
215
445
"""Derived from the Avahi example code"""
216
if state == avahi.SERVER_COLLISION:
217
logger.error(u"Zeroconf server name collision")
218
self.remove()
446
logger.debug("Avahi server state change: %i", state)
447
bad_states = {
448
avahi.SERVER_INVALID: "Zeroconf server invalid",
449
avahi.SERVER_REGISTERING: None,
450
avahi.SERVER_COLLISION: "Zeroconf server name collision",
451
avahi.SERVER_FAILURE: "Zeroconf server failure",
452
}
453
if state in bad_states:
454
if bad_states[state] is not None:
455
if error is None:
456
logger.error(bad_states[state])
457
else:
458
logger.error(bad_states[state] + ": %r", error)
459
self.cleanup()
219
460
elif state == avahi.SERVER_RUNNING:
220
self.add()
461
try:
462
self.add()
463
except dbus.exceptions.DBusException as error:
464
if (error.get_dbus_name()
465
== "org.freedesktop.Avahi.CollisionError"):
466
logger.info("Local Zeroconf service name"
467
" collision.")
468
return self.rename(remove=False)
469
else:
470
logger.critical("D-Bus Exception", exc_info=error)
471
self.cleanup()
472
os._exit(1)
473
else:
474
if error is None:
475
logger.debug("Unknown state: %r", state)
476
else:
477
logger.debug("Unknown state: %r: %r", state, error)
478
221
479
def activate(self):
222
480
"""Derived from the Avahi example code"""
223
481
if self.server is None:
224
482
self.server = dbus.Interface(
225
483
self.bus.get_object(avahi.DBUS_NAME,
226
avahi.DBUS_PATH_SERVER),
484
avahi.DBUS_PATH_SERVER,
485
follow_name_owner_changes=True),
227
486
avahi.DBUS_INTERFACE_SERVER)
228
self.server.connect_to_signal(u"StateChanged",
229
self.server_state_changed)
487
self.server.connect_to_signal("StateChanged",
488
self.server_state_changed)
230
489
self.server_state_changed(self.server.GetState())
231
490
232
491
492
class AvahiServiceToSyslog(AvahiService):
493
def rename(self, *args, **kwargs):
494
"""Add the new name to the syslog messages"""
495
ret = AvahiService.rename(self, *args, **kwargs)
496
syslogger.setFormatter(logging.Formatter(
497
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
498
.format(self.name)))
499
return ret
500
501
# Pretend that we have a GnuTLS module
502
class GnuTLS(object):
503
"""This isn't so much a class as it is a module-like namespace.
504
It is instantiated once, and simulates having a GnuTLS module."""
505
506
_library = ctypes.cdll.LoadLibrary(
507
ctypes.util.find_library("gnutls"))
508
_need_version = b"3.3.0"
509
def __init__(self):
510
# Need to use class name "GnuTLS" here, since this method is
511
# called before the assignment to the "gnutls" global variable
512
# happens.
513
if GnuTLS.check_version(self._need_version) is None:
514
raise GnuTLS.Error("Needs GnuTLS {} or later"
515
.format(self._need_version))
516
517
# Unless otherwise indicated, the constants and types below are
518
# all from the gnutls/gnutls.h C header file.
519
520
# Constants
521
E_SUCCESS = 0
522
E_INTERRUPTED = -52
523
E_AGAIN = -28
524
CRT_OPENPGP = 2
525
CLIENT = 2
526
SHUT_RDWR = 0
527
CRD_CERTIFICATE = 1
528
E_NO_CERTIFICATE_FOUND = -49
529
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
530
531
# Types
532
class session_int(ctypes.Structure):
533
_fields_ = []
534
session_t = ctypes.POINTER(session_int)
535
class certificate_credentials_st(ctypes.Structure):
536
_fields_ = []
537
certificate_credentials_t = ctypes.POINTER(
538
certificate_credentials_st)
539
certificate_type_t = ctypes.c_int
540
class datum_t(ctypes.Structure):
541
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
542
('size', ctypes.c_uint)]
543
class openpgp_crt_int(ctypes.Structure):
544
_fields_ = []
545
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
546
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
547
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
548
credentials_type_t = ctypes.c_int
549
transport_ptr_t = ctypes.c_void_p
550
close_request_t = ctypes.c_int
551
552
# Exceptions
553
class Error(Exception):
554
# We need to use the class name "GnuTLS" here, since this
555
# exception might be raised from within GnuTLS.__init__,
556
# which is called before the assignment to the "gnutls"
557
# global variable has happened.
558
def __init__(self, message = None, code = None, args=()):
559
# Default usage is by a message string, but if a return
560
# code is passed, convert it to a string with
561
# gnutls.strerror()
562
self.code = code
563
if message is None and code is not None:
564
message = GnuTLS.strerror(code)
565
return super(GnuTLS.Error, self).__init__(
566
message, *args)
567
568
class CertificateSecurityError(Error):
569
pass
570
571
# Classes
572
class Credentials(object):
573
def __init__(self):
574
self._c_object = gnutls.certificate_credentials_t()
575
gnutls.certificate_allocate_credentials(
576
ctypes.byref(self._c_object))
577
self.type = gnutls.CRD_CERTIFICATE
578
579
def __del__(self):
580
gnutls.certificate_free_credentials(self._c_object)
581
582
class ClientSession(object):
583
def __init__(self, socket, credentials = None):
584
self._c_object = gnutls.session_t()
585
gnutls.init(ctypes.byref(self._c_object), gnutls.CLIENT)
586
gnutls.set_default_priority(self._c_object)
587
gnutls.transport_set_ptr(self._c_object, socket.fileno())
588
gnutls.handshake_set_private_extensions(self._c_object,
589
True)
590
self.socket = socket
591
if credentials is None:
592
credentials = gnutls.Credentials()
593
gnutls.credentials_set(self._c_object, credentials.type,
594
ctypes.cast(credentials._c_object,
595
ctypes.c_void_p))
596
self.credentials = credentials
597
598
def __del__(self):
599
gnutls.deinit(self._c_object)
600
601
def handshake(self):
602
return gnutls.handshake(self._c_object)
603
604
def send(self, data):
605
data = bytes(data)
606
data_len = len(data)
607
while data_len > 0:
608
data_len -= gnutls.record_send(self._c_object,
609
data[-data_len:],
610
data_len)
611
612
def bye(self):
613
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
614
615
# Error handling functions
616
def _error_code(result):
617
"""A function to raise exceptions on errors, suitable
618
for the 'restype' attribute on ctypes functions"""
619
if result >= 0:
620
return result
621
if result == gnutls.E_NO_CERTIFICATE_FOUND:
622
raise gnutls.CertificateSecurityError(code = result)
623
raise gnutls.Error(code = result)
624
625
def _retry_on_error(result, func, arguments):
626
"""A function to retry on some errors, suitable
627
for the 'errcheck' attribute on ctypes functions"""
628
while result < 0:
629
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
630
return _error_code(result)
631
result = func(*arguments)
632
return result
633
634
# Unless otherwise indicated, the function declarations below are
635
# all from the gnutls/gnutls.h C header file.
636
637
# Functions
638
priority_set_direct = _library.gnutls_priority_set_direct
639
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
640
ctypes.POINTER(ctypes.c_char_p)]
641
priority_set_direct.restype = _error_code
642
643
init = _library.gnutls_init
644
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
645
init.restype = _error_code
646
647
set_default_priority = _library.gnutls_set_default_priority
648
set_default_priority.argtypes = [session_t]
649
set_default_priority.restype = _error_code
650
651
record_send = _library.gnutls_record_send
652
record_send.argtypes = [session_t, ctypes.c_void_p,
653
ctypes.c_size_t]
654
record_send.restype = ctypes.c_ssize_t
655
record_send.errcheck = _retry_on_error
656
657
certificate_allocate_credentials = (
658
_library.gnutls_certificate_allocate_credentials)
659
certificate_allocate_credentials.argtypes = [
660
ctypes.POINTER(certificate_credentials_t)]
661
certificate_allocate_credentials.restype = _error_code
662
663
certificate_free_credentials = (
664
_library.gnutls_certificate_free_credentials)
665
certificate_free_credentials.argtypes = [certificate_credentials_t]
666
certificate_free_credentials.restype = None
667
668
handshake_set_private_extensions = (
669
_library.gnutls_handshake_set_private_extensions)
670
handshake_set_private_extensions.argtypes = [session_t,
671
ctypes.c_int]
672
handshake_set_private_extensions.restype = None
673
674
credentials_set = _library.gnutls_credentials_set
675
credentials_set.argtypes = [session_t, credentials_type_t,
676
ctypes.c_void_p]
677
credentials_set.restype = _error_code
678
679
strerror = _library.gnutls_strerror
680
strerror.argtypes = [ctypes.c_int]
681
strerror.restype = ctypes.c_char_p
682
683
certificate_type_get = _library.gnutls_certificate_type_get
684
certificate_type_get.argtypes = [session_t]
685
certificate_type_get.restype = _error_code
686
687
certificate_get_peers = _library.gnutls_certificate_get_peers
688
certificate_get_peers.argtypes = [session_t,
689
ctypes.POINTER(ctypes.c_uint)]
690
certificate_get_peers.restype = ctypes.POINTER(datum_t)
691
692
global_set_log_level = _library.gnutls_global_set_log_level
693
global_set_log_level.argtypes = [ctypes.c_int]
694
global_set_log_level.restype = None
695
696
global_set_log_function = _library.gnutls_global_set_log_function
697
global_set_log_function.argtypes = [log_func]
698
global_set_log_function.restype = None
699
700
deinit = _library.gnutls_deinit
701
deinit.argtypes = [session_t]
702
deinit.restype = None
703
704
handshake = _library.gnutls_handshake
705
handshake.argtypes = [session_t]
706
handshake.restype = _error_code
707
handshake.errcheck = _retry_on_error
708
709
transport_set_ptr = _library.gnutls_transport_set_ptr
710
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
711
transport_set_ptr.restype = None
712
713
bye = _library.gnutls_bye
714
bye.argtypes = [session_t, close_request_t]
715
bye.restype = _error_code
716
bye.errcheck = _retry_on_error
717
718
check_version = _library.gnutls_check_version
719
check_version.argtypes = [ctypes.c_char_p]
720
check_version.restype = ctypes.c_char_p
721
722
# All the function declarations below are from gnutls/openpgp.h
723
724
openpgp_crt_init = _library.gnutls_openpgp_crt_init
725
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
726
openpgp_crt_init.restype = _error_code
727
728
openpgp_crt_import = _library.gnutls_openpgp_crt_import
729
openpgp_crt_import.argtypes = [openpgp_crt_t,
730
ctypes.POINTER(datum_t),
731
openpgp_crt_fmt_t]
732
openpgp_crt_import.restype = _error_code
733
734
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
735
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
736
ctypes.POINTER(ctypes.c_uint)]
737
openpgp_crt_verify_self.restype = _error_code
738
739
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
740
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
741
openpgp_crt_deinit.restype = None
742
743
openpgp_crt_get_fingerprint = (
744
_library.gnutls_openpgp_crt_get_fingerprint)
745
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
746
ctypes.c_void_p,
747
ctypes.POINTER(
748
ctypes.c_size_t)]
749
openpgp_crt_get_fingerprint.restype = _error_code
750
751
# Remove non-public functions
752
del _error_code, _retry_on_error
753
# Create the global "gnutls" object, simulating a module
754
gnutls = GnuTLS()
755
756
def call_pipe(connection, # : multiprocessing.Connection
757
func, *args, **kwargs):
758
"""This function is meant to be called by multiprocessing.Process
759
760
This function runs func(*args, **kwargs), and writes the resulting
761
return value on the provided multiprocessing.Connection.
762
"""
763
connection.send(func(*args, **kwargs))
764
connection.close()
765
233
766
class Client(object):
234
767
"""A representation of a client host served by this server.
235
768
236
769
Attributes:
237
name: string; from the config file, used in log messages and
238
D-Bus identifiers
770
approved: bool(); 'None' if not yet approved/disapproved
771
approval_delay: datetime.timedelta(); Time to wait for approval
772
approval_duration: datetime.timedelta(); Duration of one approval
773
checker: subprocess.Popen(); a running checker process used
774
to see if the client lives.
775
'None' if no process is running.
776
checker_callback_tag: a GLib event source tag, or None
777
checker_command: string; External command which is run to check
778
if client lives. %() expansions are done at
779
runtime with vars(self) as dict, so that for
780
instance %(name)s can be used in the command.
781
checker_initiator_tag: a GLib event source tag, or None
782
created: datetime.datetime(); (UTC) object creation
783
client_structure: Object describing what attributes a client has
784
and is used for storing the client at exit
785
current_checker_command: string; current running checker_command
786
disable_initiator_tag: a GLib event source tag, or None
787
enabled: bool()
239
788
fingerprint: string (40 or 32 hexadecimal digits); used to
240
789
uniquely identify the client
241
secret: bytestring; sent verbatim (over TLS) to client
242
790
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()
791
interval: datetime.timedelta(); How often to start a new checker
792
last_approval_request: datetime.datetime(); (UTC) or None
246
793
last_checked_ok: datetime.datetime(); (UTC) or None
794
last_checker_status: integer between 0 and 255 reflecting exit
795
status of last checker. -1 reflects crashed
796
checker, -2 means no checker completed yet.
797
last_checker_signal: The signal which killed the last checker, if
798
last_checker_status is -1
799
last_enabled: datetime.datetime(); (UTC) or None
800
name: string; from the config file, used in log messages and
801
D-Bus identifiers
802
secret: bytestring; sent verbatim (over TLS) to client
247
803
timeout: datetime.timedelta(); How long from last_checked_ok
248
804
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
262
approved_delay: datetime.timedelta(); Time to wait for approval
263
_approved: bool(); 'None' if not yet approved/disapproved
264
approved_duration: datetime.timedelta(); Duration of one approval
805
extended_timeout: extra long timeout when secret has been sent
806
runtime_expansions: Allowed attributes for runtime expansion.
807
expires: datetime.datetime(); time (UTC) when a client will be
808
disabled, or None
809
server_settings: The server_settings dict from main()
265
810
"""
266
811
812
runtime_expansions = ("approval_delay", "approval_duration",
813
"created", "enabled", "expires",
814
"fingerprint", "host", "interval",
815
"last_approval_request", "last_checked_ok",
816
"last_enabled", "name", "timeout")
817
client_defaults = {
818
"timeout": "PT5M",
819
"extended_timeout": "PT15M",
820
"interval": "PT2M",
821
"checker": "fping -q -- %%(host)s",
822
"host": "",
823
"approval_delay": "PT0S",
824
"approval_duration": "PT1S",
825
"approved_by_default": "True",
826
"enabled": "True",
827
}
828
267
829
@staticmethod
268
def _timedelta_to_milliseconds(td):
269
"Convert a datetime.timedelta() to milliseconds"
270
return ((td.days * 24 * 60 * 60 * 1000)
271
+ (td.seconds * 1000)
272
+ (td.microseconds // 1000))
273
274
def timeout_milliseconds(self):
275
"Return the 'timeout' attribute in milliseconds"
276
return self._timedelta_to_milliseconds(self.timeout)
277
278
def interval_milliseconds(self):
279
"Return the 'interval' attribute in milliseconds"
280
return self._timedelta_to_milliseconds(self.interval)
281
282
def approved_delay_milliseconds(self):
283
return self._timedelta_to_milliseconds(self.approved_delay)
284
285
def __init__(self, name = None, disable_hook=None, config=None):
286
"""Note: the 'checker' key in 'config' sets the
287
'checker_command' attribute and *not* the 'checker'
288
attribute."""
830
def config_parser(config):
831
"""Construct a new dict of client settings of this form:
832
{ client_name: {setting_name: value, ...}, ...}
833
with exceptions for any special settings as defined above.
834
NOTE: Must be a pure function. Must return the same result
835
value given the same arguments.
836
"""
837
settings = {}
838
for client_name in config.sections():
839
section = dict(config.items(client_name))
840
client = settings[client_name] = {}
841
842
client["host"] = section["host"]
843
# Reformat values from string types to Python types
844
client["approved_by_default"] = config.getboolean(
845
client_name, "approved_by_default")
846
client["enabled"] = config.getboolean(client_name,
847
"enabled")
848
849
# Uppercase and remove spaces from fingerprint for later
850
# comparison purposes with return value from the
851
# fingerprint() function
852
client["fingerprint"] = (section["fingerprint"].upper()
853
.replace(" ", ""))
854
if "secret" in section:
855
client["secret"] = codecs.decode(section["secret"]
856
.encode("utf-8"),
857
"base64")
858
elif "secfile" in section:
859
with open(os.path.expanduser(os.path.expandvars
860
(section["secfile"])),
861
"rb") as secfile:
862
client["secret"] = secfile.read()
863
else:
864
raise TypeError("No secret or secfile for section {}"
865
.format(section))
866
client["timeout"] = string_to_delta(section["timeout"])
867
client["extended_timeout"] = string_to_delta(
868
section["extended_timeout"])
869
client["interval"] = string_to_delta(section["interval"])
870
client["approval_delay"] = string_to_delta(
871
section["approval_delay"])
872
client["approval_duration"] = string_to_delta(
873
section["approval_duration"])
874
client["checker_command"] = section["checker"]
875
client["last_approval_request"] = None
876
client["last_checked_ok"] = None
877
client["last_checker_status"] = -2
878
879
return settings
880
881
def __init__(self, settings, name = None, server_settings=None):
289
882
self.name = name
290
if config is None:
291
config = {}
292
logger.debug(u"Creating client %r", self.name)
293
# Uppercase and remove spaces from fingerprint for later
294
# comparison purposes with return value from the fingerprint()
295
# function
296
self.fingerprint = (config[u"fingerprint"].upper()
297
.replace(u" ", u""))
298
logger.debug(u" Fingerprint: %s", self.fingerprint)
299
if u"secret" in config:
300
self.secret = config[u"secret"].decode(u"base64")
301
elif u"secfile" in config:
302
with open(os.path.expanduser(os.path.expandvars
303
(config[u"secfile"])),
304
"rb") as secfile:
305
self.secret = secfile.read()
883
if server_settings is None:
884
server_settings = {}
885
self.server_settings = server_settings
886
# adding all client settings
887
for setting, value in settings.items():
888
setattr(self, setting, value)
889
890
if self.enabled:
891
if not hasattr(self, "last_enabled"):
892
self.last_enabled = datetime.datetime.utcnow()
893
if not hasattr(self, "expires"):
894
self.expires = (datetime.datetime.utcnow()
895
+ self.timeout)
306
896
else:
307
raise TypeError(u"No secret or secfile for client %s"
308
% self.name)
309
self.host = config.get(u"host", u"")
310
self.created = datetime.datetime.utcnow()
311
self.enabled = False
312
self.last_enabled = None
313
self.last_checked_ok = None
314
self.timeout = string_to_delta(config[u"timeout"])
315
self.interval = string_to_delta(config[u"interval"])
316
self.disable_hook = disable_hook
897
self.last_enabled = None
898
self.expires = None
899
900
logger.debug("Creating client %r", self.name)
901
logger.debug(" Fingerprint: %s", self.fingerprint)
902
self.created = settings.get("created",
903
datetime.datetime.utcnow())
904
905
# attributes specific for this server instance
317
906
self.checker = None
318
907
self.checker_initiator_tag = None
319
908
self.disable_initiator_tag = None
320
909
self.checker_callback_tag = None
321
self.checker_command = config[u"checker"]
322
910
self.current_checker_command = None
323
self.last_connect = None
324
self._approved = None
325
self.approved_by_default = config.get(u"approved_by_default",
326
True)
911
self.approved = None
327
912
self.approvals_pending = 0
328
self.approved_delay = string_to_delta(
329
config[u"approved_delay"])
330
self.approved_duration = string_to_delta(
331
config[u"approved_duration"])
332
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
913
self.changedstate = multiprocessing_manager.Condition(
914
multiprocessing_manager.Lock())
915
self.client_structure = [attr
916
for attr in self.__dict__.keys()
917
if not attr.startswith("_")]
918
self.client_structure.append("client_structure")
919
920
for name, t in inspect.getmembers(
921
type(self), lambda obj: isinstance(obj, property)):
922
if not name.startswith("_"):
923
self.client_structure.append(name)
333
924
925
# Send notice to process children that client state has changed
334
926
def send_changedstate(self):
335
self.changedstate.acquire()
336
self.changedstate.notify_all()
337
self.changedstate.release()
338
927
with self.changedstate:
928
self.changedstate.notify_all()
929
339
930
def enable(self):
340
931
"""Start this client's checker and timeout hooks"""
341
if getattr(self, u"enabled", False):
932
if getattr(self, "enabled", False):
342
933
# Already enabled
343
934
return
344
self.send_changedstate()
935
self.expires = datetime.datetime.utcnow() + self.timeout
936
self.enabled = True
345
937
self.last_enabled = datetime.datetime.utcnow()
938
self.init_checker()
939
self.send_changedstate()
940
941
def disable(self, quiet=True):
942
"""Disable this client."""
943
if not getattr(self, "enabled", False):
944
return False
945
if not quiet:
946
logger.info("Disabling client %s", self.name)
947
if getattr(self, "disable_initiator_tag", None) is not None:
948
GLib.source_remove(self.disable_initiator_tag)
949
self.disable_initiator_tag = None
950
self.expires = None
951
if getattr(self, "checker_initiator_tag", None) is not None:
952
GLib.source_remove(self.checker_initiator_tag)
953
self.checker_initiator_tag = None
954
self.stop_checker()
955
self.enabled = False
956
if not quiet:
957
self.send_changedstate()
958
# Do not run this again if called by a GLib.timeout_add
959
return False
960
961
def __del__(self):
962
self.disable()
963
964
def init_checker(self):
346
965
# Schedule a new checker to be started an 'interval' from now,
347
966
# and every interval from then on.
348
self.checker_initiator_tag = (gobject.timeout_add
349
(self.interval_milliseconds(),
350
self.start_checker))
967
if self.checker_initiator_tag is not None:
968
GLib.source_remove(self.checker_initiator_tag)
969
self.checker_initiator_tag = GLib.timeout_add(
970
int(self.interval.total_seconds() * 1000),
971
self.start_checker)
351
972
# Schedule a disable() when 'timeout' has passed
352
self.disable_initiator_tag = (gobject.timeout_add
353
(self.timeout_milliseconds(),
354
self.disable))
355
self.enabled = True
973
if self.disable_initiator_tag is not None:
974
GLib.source_remove(self.disable_initiator_tag)
975
self.disable_initiator_tag = GLib.timeout_add(
976
int(self.timeout.total_seconds() * 1000), self.disable)
356
977
# Also start a new checker *right now*.
357
978
self.start_checker()
358
979
359
def disable(self, quiet=True):
360
"""Disable this client."""
361
if not getattr(self, "enabled", False):
362
return False
363
if not quiet:
364
self.send_changedstate()
365
if not quiet:
366
logger.info(u"Disabling client %s", self.name)
367
if getattr(self, u"disable_initiator_tag", False):
368
gobject.source_remove(self.disable_initiator_tag)
369
self.disable_initiator_tag = None
370
if getattr(self, u"checker_initiator_tag", False):
371
gobject.source_remove(self.checker_initiator_tag)
372
self.checker_initiator_tag = None
373
self.stop_checker()
374
if self.disable_hook:
375
self.disable_hook(self)
376
self.enabled = False
377
# Do not run this again if called by a gobject.timeout_add
378
return False
379
380
def __del__(self):
381
self.disable_hook = None
382
self.disable()
383
384
def checker_callback(self, pid, condition, command):
980
def checker_callback(self, source, condition, connection,
981
command):
385
982
"""The checker has completed, so take appropriate actions."""
386
983
self.checker_callback_tag = None
387
984
self.checker = None
388
if os.WIFEXITED(condition):
389
exitstatus = os.WEXITSTATUS(condition)
390
if exitstatus == 0:
391
logger.info(u"Checker for %(name)s succeeded",
985
# Read return code from connection (see call_pipe)
986
returncode = connection.recv()
987
connection.close()
988
989
if returncode >= 0:
990
self.last_checker_status = returncode
991
self.last_checker_signal = None
992
if self.last_checker_status == 0:
993
logger.info("Checker for %(name)s succeeded",
392
994
vars(self))
393
995
self.checked_ok()
394
996
else:
395
logger.info(u"Checker for %(name)s failed",
396
vars(self))
997
logger.info("Checker for %(name)s failed", vars(self))
397
998
else:
398
logger.warning(u"Checker for %(name)s crashed?",
999
self.last_checker_status = -1
1000
self.last_checker_signal = -returncode
1001
logger.warning("Checker for %(name)s crashed?",
399
1002
vars(self))
1003
return False
400
1004
401
1005
def checked_ok(self):
402
"""Bump up the timeout for this client.
403
404
This should only be called when the client has been seen,
405
alive and well.
406
"""
1006
"""Assert that the client has been seen, alive and well."""
407
1007
self.last_checked_ok = datetime.datetime.utcnow()
408
gobject.source_remove(self.disable_initiator_tag)
409
self.disable_initiator_tag = (gobject.timeout_add
410
(self.timeout_milliseconds(),
411
self.disable))
1008
self.last_checker_status = 0
1009
self.last_checker_signal = None
1010
self.bump_timeout()
1011
1012
def bump_timeout(self, timeout=None):
1013
"""Bump up the timeout for this client."""
1014
if timeout is None:
1015
timeout = self.timeout
1016
if self.disable_initiator_tag is not None:
1017
GLib.source_remove(self.disable_initiator_tag)
1018
self.disable_initiator_tag = None
1019
if getattr(self, "enabled", False):
1020
self.disable_initiator_tag = GLib.timeout_add(
1021
int(timeout.total_seconds() * 1000), self.disable)
1022
self.expires = datetime.datetime.utcnow() + timeout
1023
1024
def need_approval(self):
1025
self.last_approval_request = datetime.datetime.utcnow()
412
1026
413
1027
def start_checker(self):
414
1028
"""Start a new checker subprocess if one is not running.
416
1030
If a checker already exists, leave it running and do
417
1031
nothing."""
418
1032
# The reason for not killing a running checker is that if we
419
# did that, then if a checker (for some reason) started
420
# running slowly and taking more than 'interval' time, the
421
# client would inevitably timeout, since no checker would get
422
# a chance to run to completion. If we instead leave running
1033
# did that, and if a checker (for some reason) started running
1034
# slowly and taking more than 'interval' time, then the client
1035
# would inevitably timeout, since no checker would get a
1036
# chance to run to completion. If we instead leave running
423
1037
# checkers alone, the checker would have to take more time
424
1038
# than 'timeout' for the client to be disabled, which is as it
425
1039
# should be.
426
1040
427
# If a checker exists, make sure it is not a zombie
428
try:
429
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
430
except (AttributeError, OSError), error:
431
if (isinstance(error, OSError)
432
and error.errno != errno.ECHILD):
433
raise error
434
else:
435
if pid:
436
logger.warning(u"Checker was a zombie")
437
gobject.source_remove(self.checker_callback_tag)
438
self.checker_callback(pid, status,
439
self.current_checker_command)
1041
if self.checker is not None and not self.checker.is_alive():
1042
logger.warning("Checker was not alive; joining")
1043
self.checker.join()
1044
self.checker = None
440
1045
# Start a new checker if needed
441
1046
if self.checker is None:
1047
# Escape attributes for the shell
1048
escaped_attrs = {
1049
attr: re.escape(str(getattr(self, attr)))
1050
for attr in self.runtime_expansions }
442
1051
try:
443
# In case checker_command has exactly one % operator
444
command = self.checker_command % self.host
445
except TypeError:
446
# Escape attributes for the shell
447
escaped_attrs = dict((key,
448
re.escape(unicode(str(val),
449
errors=
450
u'replace')))
451
for key, val in
452
vars(self).iteritems())
453
try:
454
command = self.checker_command % escaped_attrs
455
except TypeError, error:
456
logger.error(u'Could not format string "%s":'
457
u' %s', self.checker_command, error)
458
return True # Try again later
1052
command = self.checker_command % escaped_attrs
1053
except TypeError as error:
1054
logger.error('Could not format string "%s"',
1055
self.checker_command,
1056
exc_info=error)
1057
return True # Try again later
459
1058
self.current_checker_command = command
460
try:
461
logger.info(u"Starting checker %r for %s",
462
command, self.name)
463
# We don't need to redirect stdout and stderr, since
464
# in normal mode, that is already done by daemon(),
465
# and in debug mode we don't want to. (Stdin is
466
# always replaced by /dev/null.)
467
self.checker = subprocess.Popen(command,
468
close_fds=True,
469
shell=True, cwd=u"/")
470
self.checker_callback_tag = (gobject.child_watch_add
471
(self.checker.pid,
472
self.checker_callback,
473
data=command))
474
# The checker may have completed before the gobject
475
# watch was added. Check for this.
476
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
477
if pid:
478
gobject.source_remove(self.checker_callback_tag)
479
self.checker_callback(pid, status, command)
480
except OSError, error:
481
logger.error(u"Failed to start subprocess: %s",
482
error)
483
# Re-run this periodically if run by gobject.timeout_add
1059
logger.info("Starting checker %r for %s", command,
1060
self.name)
1061
# We don't need to redirect stdout and stderr, since
1062
# in normal mode, that is already done by daemon(),
1063
# and in debug mode we don't want to. (Stdin is
1064
# always replaced by /dev/null.)
1065
# The exception is when not debugging but nevertheless
1066
# running in the foreground; use the previously
1067
# created wnull.
1068
popen_args = { "close_fds": True,
1069
"shell": True,
1070
"cwd": "/" }
1071
if (not self.server_settings["debug"]
1072
and self.server_settings["foreground"]):
1073
popen_args.update({"stdout": wnull,
1074
"stderr": wnull })
1075
pipe = multiprocessing.Pipe(duplex = False)
1076
self.checker = multiprocessing.Process(
1077
target = call_pipe,
1078
args = (pipe[1], subprocess.call, command),
1079
kwargs = popen_args)
1080
self.checker.start()
1081
self.checker_callback_tag = GLib.io_add_watch(
1082
pipe[0].fileno(), GLib.IO_IN,
1083
self.checker_callback, pipe[0], command)
1084
# Re-run this periodically if run by GLib.timeout_add
484
1085
return True
485
1086
486
1087
def stop_checker(self):
487
1088
"""Force the checker process, if any, to stop."""
488
1089
if self.checker_callback_tag:
489
gobject.source_remove(self.checker_callback_tag)
1090
GLib.source_remove(self.checker_callback_tag)
490
1091
self.checker_callback_tag = None
491
if getattr(self, u"checker", None) is None:
1092
if getattr(self, "checker", None) is None:
492
1093
return
493
logger.debug(u"Stopping checker for %(name)s", vars(self))
494
try:
495
os.kill(self.checker.pid, signal.SIGTERM)
496
#time.sleep(0.5)
497
#if self.checker.poll() is None:
498
# os.kill(self.checker.pid, signal.SIGKILL)
499
except OSError, error:
500
if error.errno != errno.ESRCH: # No such process
501
raise
1094
logger.debug("Stopping checker for %(name)s", vars(self))
1095
self.checker.terminate()
502
1096
self.checker = None
503
1097
504
def dbus_service_property(dbus_interface, signature=u"v",
505
access=u"readwrite", byte_arrays=False):
1098
1099
def dbus_service_property(dbus_interface,
1100
signature="v",
1101
access="readwrite",
1102
byte_arrays=False):
506
1103
"""Decorators for marking methods of a DBusObjectWithProperties to
507
1104
become properties on the D-Bus.
508
1105
515
1112
"""
516
1113
# Encoding deeply encoded byte arrays is not supported yet by the
517
1114
# "Set" method, so we fail early here:
518
if byte_arrays and signature != u"ay":
519
raise ValueError(u"Byte arrays not supported for non-'ay'"
520
u" signature %r" % signature)
1115
if byte_arrays and signature != "ay":
1116
raise ValueError("Byte arrays not supported for non-'ay'"
1117
" signature {!r}".format(signature))
1118
521
1119
def decorator(func):
522
1120
func._dbus_is_property = True
523
1121
func._dbus_interface = dbus_interface
524
1122
func._dbus_signature = signature
525
1123
func._dbus_access = access
526
1124
func._dbus_name = func.__name__
527
if func._dbus_name.endswith(u"_dbus_property"):
1125
if func._dbus_name.endswith("_dbus_property"):
528
1126
func._dbus_name = func._dbus_name[:-14]
529
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
530
return func
1127
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
1128
return func
1129
1130
return decorator
1131
1132
1133
def dbus_interface_annotations(dbus_interface):
1134
"""Decorator for marking functions returning interface annotations
1135
1136
Usage:
1137
1138
@dbus_interface_annotations("org.example.Interface")
1139
def _foo(self): # Function name does not matter
1140
return {"org.freedesktop.DBus.Deprecated": "true",
1141
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1142
"false"}
1143
"""
1144
1145
def decorator(func):
1146
func._dbus_is_interface = True
1147
func._dbus_interface = dbus_interface
1148
func._dbus_name = dbus_interface
1149
return func
1150
1151
return decorator
1152
1153
1154
def dbus_annotations(annotations):
1155
"""Decorator to annotate D-Bus methods, signals or properties
1156
Usage:
1157
1158
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1159
"org.freedesktop.DBus.Property."
1160
"EmitsChangedSignal": "false"})
1161
@dbus_service_property("org.example.Interface", signature="b",
1162
access="r")
1163
def Property_dbus_property(self):
1164
return dbus.Boolean(False)
1165
1166
See also the DBusObjectWithAnnotations class.
1167
"""
1168
1169
def decorator(func):
1170
func._dbus_annotations = annotations
1171
return func
1172
531
1173
return decorator
532
1174
533
1175
534
1176
class DBusPropertyException(dbus.exceptions.DBusException):
535
1177
"""A base class for D-Bus property-related exceptions
536
1178
"""
537
def __unicode__(self):
538
return unicode(str(self))
1179
pass
539
1180
540
1181
541
1182
class DBusPropertyAccessException(DBusPropertyException):
550
1191
pass
551
1192
552
1193
553
class DBusObjectWithProperties(dbus.service.Object):
1194
class DBusObjectWithAnnotations(dbus.service.Object):
1195
"""A D-Bus object with annotations.
1196
1197
Classes inheriting from this can use the dbus_annotations
1198
decorator to add annotations to methods or signals.
1199
"""
1200
1201
@staticmethod
1202
def _is_dbus_thing(thing):
1203
"""Returns a function testing if an attribute is a D-Bus thing
1204
1205
If called like _is_dbus_thing("method") it returns a function
1206
suitable for use as predicate to inspect.getmembers().
1207
"""
1208
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1209
False)
1210
1211
def _get_all_dbus_things(self, thing):
1212
"""Returns a generator of (name, attribute) pairs
1213
"""
1214
return ((getattr(athing.__get__(self), "_dbus_name", name),
1215
athing.__get__(self))
1216
for cls in self.__class__.__mro__
1217
for name, athing in
1218
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1219
1220
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1221
out_signature = "s",
1222
path_keyword = 'object_path',
1223
connection_keyword = 'connection')
1224
def Introspect(self, object_path, connection):
1225
"""Overloading of standard D-Bus method.
1226
1227
Inserts annotation tags on methods and signals.
1228
"""
1229
xmlstring = dbus.service.Object.Introspect(self, object_path,
1230
connection)
1231
try:
1232
document = xml.dom.minidom.parseString(xmlstring)
1233
1234
for if_tag in document.getElementsByTagName("interface"):
1235
# Add annotation tags
1236
for typ in ("method", "signal"):
1237
for tag in if_tag.getElementsByTagName(typ):
1238
annots = dict()
1239
for name, prop in (self.
1240
_get_all_dbus_things(typ)):
1241
if (name == tag.getAttribute("name")
1242
and prop._dbus_interface
1243
== if_tag.getAttribute("name")):
1244
annots.update(getattr(
1245
prop, "_dbus_annotations", {}))
1246
for name, value in annots.items():
1247
ann_tag = document.createElement(
1248
"annotation")
1249
ann_tag.setAttribute("name", name)
1250
ann_tag.setAttribute("value", value)
1251
tag.appendChild(ann_tag)
1252
# Add interface annotation tags
1253
for annotation, value in dict(
1254
itertools.chain.from_iterable(
1255
annotations().items()
1256
for name, annotations
1257
in self._get_all_dbus_things("interface")
1258
if name == if_tag.getAttribute("name")
1259
)).items():
1260
ann_tag = document.createElement("annotation")
1261
ann_tag.setAttribute("name", annotation)
1262
ann_tag.setAttribute("value", value)
1263
if_tag.appendChild(ann_tag)
1264
# Fix argument name for the Introspect method itself
1265
if (if_tag.getAttribute("name")
1266
== dbus.INTROSPECTABLE_IFACE):
1267
for cn in if_tag.getElementsByTagName("method"):
1268
if cn.getAttribute("name") == "Introspect":
1269
for arg in cn.getElementsByTagName("arg"):
1270
if (arg.getAttribute("direction")
1271
== "out"):
1272
arg.setAttribute("name",
1273
"xml_data")
1274
xmlstring = document.toxml("utf-8")
1275
document.unlink()
1276
except (AttributeError, xml.dom.DOMException,
1277
xml.parsers.expat.ExpatError) as error:
1278
logger.error("Failed to override Introspection method",
1279
exc_info=error)
1280
return xmlstring
1281
1282
1283
class DBusObjectWithProperties(DBusObjectWithAnnotations):
554
1284
"""A D-Bus object with properties.
555
1285
556
1286
Classes inheriting from this can use the dbus_service_property
557
1287
decorator to expose methods as D-Bus properties. It exposes the
558
1288
standard Get(), Set(), and GetAll() methods on the D-Bus.
559
1289
"""
560
1290
561
@staticmethod
562
def _is_dbus_property(obj):
563
return getattr(obj, u"_dbus_is_property", False)
564
565
def _get_all_dbus_properties(self):
566
"""Returns a generator of (name, attribute) pairs
567
"""
568
return ((prop._dbus_name, prop)
569
for name, prop in
570
inspect.getmembers(self, self._is_dbus_property))
571
572
1291
def _get_dbus_property(self, interface_name, property_name):
573
1292
"""Returns a bound method if one exists which is a D-Bus
574
1293
property with the specified name and interface.
575
1294
"""
576
for name in (property_name,
577
property_name + u"_dbus_property"):
578
prop = getattr(self, name, None)
579
if (prop is None
580
or not self._is_dbus_property(prop)
581
or prop._dbus_name != property_name
582
or (interface_name and prop._dbus_interface
583
and interface_name != prop._dbus_interface)):
584
continue
585
return prop
1295
for cls in self.__class__.__mro__:
1296
for name, value in inspect.getmembers(
1297
cls, self._is_dbus_thing("property")):
1298
if (value._dbus_name == property_name
1299
and value._dbus_interface == interface_name):
1300
return value.__get__(self)
1301
586
1302
# No such property
587
raise DBusPropertyNotFound(self.dbus_object_path + u":"
588
+ interface_name + u"."
589
+ property_name)
590
591
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
592
out_signature=u"v")
1303
raise DBusPropertyNotFound("{}:{}.{}".format(
1304
self.dbus_object_path, interface_name, property_name))
1305
1306
@classmethod
1307
def _get_all_interface_names(cls):
1308
"""Get a sequence of all interfaces supported by an object"""
1309
return (name for name in set(getattr(getattr(x, attr),
1310
"_dbus_interface", None)
1311
for x in (inspect.getmro(cls))
1312
for attr in dir(x))
1313
if name is not None)
1314
1315
@dbus.service.method(dbus.PROPERTIES_IFACE,
1316
in_signature="ss",
1317
out_signature="v")
593
1318
def Get(self, interface_name, property_name):
594
1319
"""Standard D-Bus property Get() method, see D-Bus standard.
595
1320
"""
596
1321
prop = self._get_dbus_property(interface_name, property_name)
597
if prop._dbus_access == u"write":
1322
if prop._dbus_access == "write":
598
1323
raise DBusPropertyAccessException(property_name)
599
1324
value = prop()
600
if not hasattr(value, u"variant_level"):
1325
if not hasattr(value, "variant_level"):
601
1326
return value
602
1327
return type(value)(value, variant_level=value.variant_level+1)
603
1328
604
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
1329
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
605
1330
def Set(self, interface_name, property_name, value):
606
1331
"""Standard D-Bus property Set() method, see D-Bus standard.
607
1332
"""
608
1333
prop = self._get_dbus_property(interface_name, property_name)
609
if prop._dbus_access == u"read":
1334
if prop._dbus_access == "read":
610
1335
raise DBusPropertyAccessException(property_name)
611
if prop._dbus_get_args_options[u"byte_arrays"]:
1336
if prop._dbus_get_args_options["byte_arrays"]:
612
1337
# The byte_arrays option is not supported yet on
613
1338
# signatures other than "ay".
614
if prop._dbus_signature != u"ay":
615
raise ValueError
616
value = dbus.ByteArray(''.join(unichr(byte)
617
for byte in value))
1339
if prop._dbus_signature != "ay":
1340
raise ValueError("Byte arrays not supported for non-"
1341
"'ay' signature {!r}"
1342
.format(prop._dbus_signature))
1343
value = dbus.ByteArray(b''.join(chr(byte)
1344
for byte in value))
618
1345
prop(value)
619
1346
620
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
621
out_signature=u"a{sv}")
1347
@dbus.service.method(dbus.PROPERTIES_IFACE,
1348
in_signature="s",
1349
out_signature="a{sv}")
622
1350
def GetAll(self, interface_name):
623
1351
"""Standard D-Bus property GetAll() method, see D-Bus
624
1352
standard.
625
1353
626
1354
Note: Will not include properties with access="write".
627
1355
"""
628
all = {}
629
for name, prop in self._get_all_dbus_properties():
1356
properties = {}
1357
for name, prop in self._get_all_dbus_things("property"):
630
1358
if (interface_name
631
1359
and interface_name != prop._dbus_interface):
632
1360
# Interface non-empty but did not match
633
1361
continue
634
1362
# Ignore write-only properties
635
if prop._dbus_access == u"write":
1363
if prop._dbus_access == "write":
636
1364
continue
637
1365
value = prop()
638
if not hasattr(value, u"variant_level"):
639
all[name] = value
1366
if not hasattr(value, "variant_level"):
1367
properties[name] = value
640
1368
continue
641
all[name] = type(value)(value, variant_level=
642
value.variant_level+1)
643
return dbus.Dictionary(all, signature=u"sv")
1369
properties[name] = type(value)(
1370
value, variant_level = value.variant_level + 1)
1371
return dbus.Dictionary(properties, signature="sv")
1372
1373
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1374
def PropertiesChanged(self, interface_name, changed_properties,
1375
invalidated_properties):
1376
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1377
standard.
1378
"""
1379
pass
644
1380
645
1381
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
646
out_signature=u"s",
1382
out_signature="s",
647
1383
path_keyword='object_path',
648
1384
connection_keyword='connection')
649
1385
def Introspect(self, object_path, connection):
650
"""Standard D-Bus method, overloaded to insert property tags.
1386
"""Overloading of standard D-Bus method.
1387
1388
Inserts property tags and interface annotation tags.
651
1389
"""
652
xmlstring = dbus.service.Object.Introspect(self, object_path,
653
connection)
1390
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1391
object_path,
1392
connection)
654
1393
try:
655
1394
document = xml.dom.minidom.parseString(xmlstring)
1395
656
1396
def make_tag(document, name, prop):
657
e = document.createElement(u"property")
658
e.setAttribute(u"name", name)
659
e.setAttribute(u"type", prop._dbus_signature)
660
e.setAttribute(u"access", prop._dbus_access)
1397
e = document.createElement("property")
1398
e.setAttribute("name", name)
1399
e.setAttribute("type", prop._dbus_signature)
1400
e.setAttribute("access", prop._dbus_access)
661
1401
return e
662
for if_tag in document.getElementsByTagName(u"interface"):
1402
1403
for if_tag in document.getElementsByTagName("interface"):
1404
# Add property tags
663
1405
for tag in (make_tag(document, name, prop)
664
1406
for name, prop
665
in self._get_all_dbus_properties()
1407
in self._get_all_dbus_things("property")
666
1408
if prop._dbus_interface
667
== if_tag.getAttribute(u"name")):
1409
== if_tag.getAttribute("name")):
668
1410
if_tag.appendChild(tag)
1411
# Add annotation tags for properties
1412
for tag in if_tag.getElementsByTagName("property"):
1413
annots = dict()
1414
for name, prop in self._get_all_dbus_things(
1415
"property"):
1416
if (name == tag.getAttribute("name")
1417
and prop._dbus_interface
1418
== if_tag.getAttribute("name")):
1419
annots.update(getattr(
1420
prop, "_dbus_annotations", {}))
1421
for name, value in annots.items():
1422
ann_tag = document.createElement(
1423
"annotation")
1424
ann_tag.setAttribute("name", name)
1425
ann_tag.setAttribute("value", value)
1426
tag.appendChild(ann_tag)
669
1427
# Add the names to the return values for the
670
1428
# "org.freedesktop.DBus.Properties" methods
671
if (if_tag.getAttribute(u"name")
672
== u"org.freedesktop.DBus.Properties"):
673
for cn in if_tag.getElementsByTagName(u"method"):
674
if cn.getAttribute(u"name") == u"Get":
675
for arg in cn.getElementsByTagName(u"arg"):
676
if (arg.getAttribute(u"direction")
677
== u"out"):
678
arg.setAttribute(u"name", u"value")
679
elif cn.getAttribute(u"name") == u"GetAll":
680
for arg in cn.getElementsByTagName(u"arg"):
681
if (arg.getAttribute(u"direction")
682
== u"out"):
683
arg.setAttribute(u"name", u"props")
684
xmlstring = document.toxml(u"utf-8")
685
document.unlink()
686
except (AttributeError, xml.dom.DOMException,
687
xml.parsers.expat.ExpatError), error:
688
logger.error(u"Failed to override Introspection method",
689
error)
690
return xmlstring
691
692
1429
if (if_tag.getAttribute("name")
1430
== "org.freedesktop.DBus.Properties"):
1431
for cn in if_tag.getElementsByTagName("method"):
1432
if cn.getAttribute("name") == "Get":
1433
for arg in cn.getElementsByTagName("arg"):
1434
if (arg.getAttribute("direction")
1435
== "out"):
1436
arg.setAttribute("name", "value")
1437
elif cn.getAttribute("name") == "GetAll":
1438
for arg in cn.getElementsByTagName("arg"):
1439
if (arg.getAttribute("direction")
1440
== "out"):
1441
arg.setAttribute("name", "props")
1442
xmlstring = document.toxml("utf-8")
1443
document.unlink()
1444
except (AttributeError, xml.dom.DOMException,
1445
xml.parsers.expat.ExpatError) as error:
1446
logger.error("Failed to override Introspection method",
1447
exc_info=error)
1448
return xmlstring
1449
1450
try:
1451
dbus.OBJECT_MANAGER_IFACE
1452
except AttributeError:
1453
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1454
1455
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1456
"""A D-Bus object with an ObjectManager.
1457
1458
Classes inheriting from this exposes the standard
1459
GetManagedObjects call and the InterfacesAdded and
1460
InterfacesRemoved signals on the standard
1461
"org.freedesktop.DBus.ObjectManager" interface.
1462
1463
Note: No signals are sent automatically; they must be sent
1464
manually.
1465
"""
1466
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1467
out_signature = "a{oa{sa{sv}}}")
1468
def GetManagedObjects(self):
1469
"""This function must be overridden"""
1470
raise NotImplementedError()
1471
1472
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1473
signature = "oa{sa{sv}}")
1474
def InterfacesAdded(self, object_path, interfaces_and_properties):
1475
pass
1476
1477
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature = "oas")
1478
def InterfacesRemoved(self, object_path, interfaces):
1479
pass
1480
1481
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1482
out_signature = "s",
1483
path_keyword = 'object_path',
1484
connection_keyword = 'connection')
1485
def Introspect(self, object_path, connection):
1486
"""Overloading of standard D-Bus method.
1487
1488
Override return argument name of GetManagedObjects to be
1489
"objpath_interfaces_and_properties"
1490
"""
1491
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1492
object_path,
1493
connection)
1494
try:
1495
document = xml.dom.minidom.parseString(xmlstring)
1496
1497
for if_tag in document.getElementsByTagName("interface"):
1498
# Fix argument name for the GetManagedObjects method
1499
if (if_tag.getAttribute("name")
1500
== dbus.OBJECT_MANAGER_IFACE):
1501
for cn in if_tag.getElementsByTagName("method"):
1502
if (cn.getAttribute("name")
1503
== "GetManagedObjects"):
1504
for arg in cn.getElementsByTagName("arg"):
1505
if (arg.getAttribute("direction")
1506
== "out"):
1507
arg.setAttribute(
1508
"name",
1509
"objpath_interfaces"
1510
"_and_properties")
1511
xmlstring = document.toxml("utf-8")
1512
document.unlink()
1513
except (AttributeError, xml.dom.DOMException,
1514
xml.parsers.expat.ExpatError) as error:
1515
logger.error("Failed to override Introspection method",
1516
exc_info = error)
1517
return xmlstring
1518
1519
def datetime_to_dbus(dt, variant_level=0):
1520
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1521
if dt is None:
1522
return dbus.String("", variant_level = variant_level)
1523
return dbus.String(dt.isoformat(), variant_level=variant_level)
1524
1525
1526
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1527
"""A class decorator; applied to a subclass of
1528
dbus.service.Object, it will add alternate D-Bus attributes with
1529
interface names according to the "alt_interface_names" mapping.
1530
Usage:
1531
1532
@alternate_dbus_interfaces({"org.example.Interface":
1533
"net.example.AlternateInterface"})
1534
class SampleDBusObject(dbus.service.Object):
1535
@dbus.service.method("org.example.Interface")
1536
def SampleDBusMethod():
1537
pass
1538
1539
The above "SampleDBusMethod" on "SampleDBusObject" will be
1540
reachable via two interfaces: "org.example.Interface" and
1541
"net.example.AlternateInterface", the latter of which will have
1542
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1543
"true", unless "deprecate" is passed with a False value.
1544
1545
This works for methods and signals, and also for D-Bus properties
1546
(from DBusObjectWithProperties) and interfaces (from the
1547
dbus_interface_annotations decorator).
1548
"""
1549
1550
def wrapper(cls):
1551
for orig_interface_name, alt_interface_name in (
1552
alt_interface_names.items()):
1553
attr = {}
1554
interface_names = set()
1555
# Go though all attributes of the class
1556
for attrname, attribute in inspect.getmembers(cls):
1557
# Ignore non-D-Bus attributes, and D-Bus attributes
1558
# with the wrong interface name
1559
if (not hasattr(attribute, "_dbus_interface")
1560
or not attribute._dbus_interface.startswith(
1561
orig_interface_name)):
1562
continue
1563
# Create an alternate D-Bus interface name based on
1564
# the current name
1565
alt_interface = attribute._dbus_interface.replace(
1566
orig_interface_name, alt_interface_name)
1567
interface_names.add(alt_interface)
1568
# Is this a D-Bus signal?
1569
if getattr(attribute, "_dbus_is_signal", False):
1570
# Extract the original non-method undecorated
1571
# function by black magic
1572
if sys.version_info.major == 2:
1573
nonmethod_func = (dict(
1574
zip(attribute.func_code.co_freevars,
1575
attribute.__closure__))
1576
["func"].cell_contents)
1577
else:
1578
nonmethod_func = (dict(
1579
zip(attribute.__code__.co_freevars,
1580
attribute.__closure__))
1581
["func"].cell_contents)
1582
# Create a new, but exactly alike, function
1583
# object, and decorate it to be a new D-Bus signal
1584
# with the alternate D-Bus interface name
1585
new_function = copy_function(nonmethod_func)
1586
new_function = (dbus.service.signal(
1587
alt_interface,
1588
attribute._dbus_signature)(new_function))
1589
# Copy annotations, if any
1590
try:
1591
new_function._dbus_annotations = dict(
1592
attribute._dbus_annotations)
1593
except AttributeError:
1594
pass
1595
# Define a creator of a function to call both the
1596
# original and alternate functions, so both the
1597
# original and alternate signals gets sent when
1598
# the function is called
1599
def fixscope(func1, func2):
1600
"""This function is a scope container to pass
1601
func1 and func2 to the "call_both" function
1602
outside of its arguments"""
1603
1604
@functools.wraps(func2)
1605
def call_both(*args, **kwargs):
1606
"""This function will emit two D-Bus
1607
signals by calling func1 and func2"""
1608
func1(*args, **kwargs)
1609
func2(*args, **kwargs)
1610
# Make wrapper function look like a D-Bus signal
1611
for name, attr in inspect.getmembers(func2):
1612
if name.startswith("_dbus_"):
1613
setattr(call_both, name, attr)
1614
1615
return call_both
1616
# Create the "call_both" function and add it to
1617
# the class
1618
attr[attrname] = fixscope(attribute, new_function)
1619
# Is this a D-Bus method?
1620
elif getattr(attribute, "_dbus_is_method", False):
1621
# Create a new, but exactly alike, function
1622
# object. Decorate it to be a new D-Bus method
1623
# with the alternate D-Bus interface name. Add it
1624
# to the class.
1625
attr[attrname] = (
1626
dbus.service.method(
1627
alt_interface,
1628
attribute._dbus_in_signature,
1629
attribute._dbus_out_signature)
1630
(copy_function(attribute)))
1631
# Copy annotations, if any
1632
try:
1633
attr[attrname]._dbus_annotations = dict(
1634
attribute._dbus_annotations)
1635
except AttributeError:
1636
pass
1637
# Is this a D-Bus property?
1638
elif getattr(attribute, "_dbus_is_property", False):
1639
# Create a new, but exactly alike, function
1640
# object, and decorate it to be a new D-Bus
1641
# property with the alternate D-Bus interface
1642
# name. Add it to the class.
1643
attr[attrname] = (dbus_service_property(
1644
alt_interface, attribute._dbus_signature,
1645
attribute._dbus_access,
1646
attribute._dbus_get_args_options
1647
["byte_arrays"])
1648
(copy_function(attribute)))
1649
# Copy annotations, if any
1650
try:
1651
attr[attrname]._dbus_annotations = dict(
1652
attribute._dbus_annotations)
1653
except AttributeError:
1654
pass
1655
# Is this a D-Bus interface?
1656
elif getattr(attribute, "_dbus_is_interface", False):
1657
# Create a new, but exactly alike, function
1658
# object. Decorate it to be a new D-Bus interface
1659
# with the alternate D-Bus interface name. Add it
1660
# to the class.
1661
attr[attrname] = (
1662
dbus_interface_annotations(alt_interface)
1663
(copy_function(attribute)))
1664
if deprecate:
1665
# Deprecate all alternate interfaces
1666
iname="_AlternateDBusNames_interface_annotation{}"
1667
for interface_name in interface_names:
1668
1669
@dbus_interface_annotations(interface_name)
1670
def func(self):
1671
return { "org.freedesktop.DBus.Deprecated":
1672
"true" }
1673
# Find an unused name
1674
for aname in (iname.format(i)
1675
for i in itertools.count()):
1676
if aname not in attr:
1677
attr[aname] = func
1678
break
1679
if interface_names:
1680
# Replace the class with a new subclass of it with
1681
# methods, signals, etc. as created above.
1682
if sys.version_info.major == 2:
1683
cls = type(b"{}Alternate".format(cls.__name__),
1684
(cls, ), attr)
1685
else:
1686
cls = type("{}Alternate".format(cls.__name__),
1687
(cls, ), attr)
1688
return cls
1689
1690
return wrapper
1691
1692
1693
@alternate_dbus_interfaces({"se.recompile.Mandos":
1694
"se.bsnet.fukt.Mandos"})
693
1695
class ClientDBus(Client, DBusObjectWithProperties):
694
1696
"""A Client class using D-Bus
695
1697
697
1699
dbus_object_path: dbus.ObjectPath
698
1700
bus: dbus.SystemBus()
699
1701
"""
1702
1703
runtime_expansions = (Client.runtime_expansions
1704
+ ("dbus_object_path", ))
1705
1706
_interface = "se.recompile.Mandos.Client"
1707
700
1708
# dbus.service.Object doesn't use super(), so we can't either.
701
1709
702
1710
def __init__(self, bus = None, *args, **kwargs):
703
self._approvals_pending = 0
704
1711
self.bus = bus
705
1712
Client.__init__(self, *args, **kwargs)
706
1713
# Only now, when this client is initialized, can it show up on
707
1714
# the D-Bus
708
self.dbus_object_path = (dbus.ObjectPath
709
(u"/clients/"
710
+ self.name.replace(u".", u"_")))
1715
client_object_name = str(self.name).translate(
1716
{ord("."): ord("_"),
1717
ord("-"): ord("_")})
1718
self.dbus_object_path = dbus.ObjectPath(
1719
"/clients/" + client_object_name)
711
1720
DBusObjectWithProperties.__init__(self, self.bus,
712
1721
self.dbus_object_path)
713
714
def _get_approvals_pending(self):
715
return self._approvals_pending
716
def _set_approvals_pending(self, value):
717
old_value = self._approvals_pending
718
self._approvals_pending = value
719
bval = bool(value)
720
if (hasattr(self, "dbus_object_path")
721
and bval is not bool(old_value)):
722
dbus_bool = dbus.Boolean(bval, variant_level=1)
723
self.PropertyChanged(dbus.String(u"approved_pending"),
724
dbus_bool)
725
726
approvals_pending = property(_get_approvals_pending,
727
_set_approvals_pending)
728
del _get_approvals_pending, _set_approvals_pending
729
730
@staticmethod
731
def _datetime_to_dbus(dt, variant_level=0):
732
"""Convert a UTC datetime.datetime() to a D-Bus type."""
733
return dbus.String(dt.isoformat(),
734
variant_level=variant_level)
735
736
def enable(self):
737
oldstate = getattr(self, u"enabled", False)
738
r = Client.enable(self)
739
if oldstate != self.enabled:
740
# Emit D-Bus signals
741
self.PropertyChanged(dbus.String(u"enabled"),
742
dbus.Boolean(True, variant_level=1))
743
self.PropertyChanged(
744
dbus.String(u"last_enabled"),
745
self._datetime_to_dbus(self.last_enabled,
746
variant_level=1))
747
return r
748
749
def disable(self, quiet = False):
750
oldstate = getattr(self, u"enabled", False)
751
r = Client.disable(self, quiet=quiet)
752
if not quiet and oldstate != self.enabled:
753
# Emit D-Bus signal
754
self.PropertyChanged(dbus.String(u"enabled"),
755
dbus.Boolean(False, variant_level=1))
756
return r
1722
1723
def notifychangeproperty(transform_func, dbus_name,
1724
type_func=lambda x: x,
1725
variant_level=1,
1726
invalidate_only=False,
1727
_interface=_interface):
1728
""" Modify a variable so that it's a property which announces
1729
its changes to DBus.
1730
1731
transform_fun: Function that takes a value and a variant_level
1732
and transforms it to a D-Bus type.
1733
dbus_name: D-Bus name of the variable
1734
type_func: Function that transform the value before sending it
1735
to the D-Bus. Default: no transform
1736
variant_level: D-Bus variant level. Default: 1
1737
"""
1738
attrname = "_{}".format(dbus_name)
1739
1740
def setter(self, value):
1741
if hasattr(self, "dbus_object_path"):
1742
if (not hasattr(self, attrname) or
1743
type_func(getattr(self, attrname, None))
1744
!= type_func(value)):
1745
if invalidate_only:
1746
self.PropertiesChanged(
1747
_interface, dbus.Dictionary(),
1748
dbus.Array((dbus_name, )))
1749
else:
1750
dbus_value = transform_func(
1751
type_func(value),
1752
variant_level = variant_level)
1753
self.PropertyChanged(dbus.String(dbus_name),
1754
dbus_value)
1755
self.PropertiesChanged(
1756
_interface,
1757
dbus.Dictionary({ dbus.String(dbus_name):
1758
dbus_value }),
1759
dbus.Array())
1760
setattr(self, attrname, value)
1761
1762
return property(lambda self: getattr(self, attrname), setter)
1763
1764
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1765
approvals_pending = notifychangeproperty(dbus.Boolean,
1766
"ApprovalPending",
1767
type_func = bool)
1768
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1769
last_enabled = notifychangeproperty(datetime_to_dbus,
1770
"LastEnabled")
1771
checker = notifychangeproperty(
1772
dbus.Boolean, "CheckerRunning",
1773
type_func = lambda checker: checker is not None)
1774
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1775
"LastCheckedOK")
1776
last_checker_status = notifychangeproperty(dbus.Int16,
1777
"LastCheckerStatus")
1778
last_approval_request = notifychangeproperty(
1779
datetime_to_dbus, "LastApprovalRequest")
1780
approved_by_default = notifychangeproperty(dbus.Boolean,
1781
"ApprovedByDefault")
1782
approval_delay = notifychangeproperty(
1783
dbus.UInt64, "ApprovalDelay",
1784
type_func = lambda td: td.total_seconds() * 1000)
1785
approval_duration = notifychangeproperty(
1786
dbus.UInt64, "ApprovalDuration",
1787
type_func = lambda td: td.total_seconds() * 1000)
1788
host = notifychangeproperty(dbus.String, "Host")
1789
timeout = notifychangeproperty(
1790
dbus.UInt64, "Timeout",
1791
type_func = lambda td: td.total_seconds() * 1000)
1792
extended_timeout = notifychangeproperty(
1793
dbus.UInt64, "ExtendedTimeout",
1794
type_func = lambda td: td.total_seconds() * 1000)
1795
interval = notifychangeproperty(
1796
dbus.UInt64, "Interval",
1797
type_func = lambda td: td.total_seconds() * 1000)
1798
checker_command = notifychangeproperty(dbus.String, "Checker")
1799
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1800
invalidate_only=True)
1801
1802
del notifychangeproperty
757
1803
758
1804
def __del__(self, *args, **kwargs):
759
1805
try:
760
1806
self.remove_from_connection()
761
1807
except LookupError:
762
1808
pass
763
if hasattr(DBusObjectWithProperties, u"__del__"):
1809
if hasattr(DBusObjectWithProperties, "__del__"):
764
1810
DBusObjectWithProperties.__del__(self, *args, **kwargs)
765
1811
Client.__del__(self, *args, **kwargs)
766
1812
767
def checker_callback(self, pid, condition, command,
768
*args, **kwargs):
769
self.checker_callback_tag = None
770
self.checker = None
771
# Emit D-Bus signal
772
self.PropertyChanged(dbus.String(u"checker_running"),
773
dbus.Boolean(False, variant_level=1))
774
if os.WIFEXITED(condition):
775
exitstatus = os.WEXITSTATUS(condition)
1813
def checker_callback(self, source, condition,
1814
connection, command, *args, **kwargs):
1815
ret = Client.checker_callback(self, source, condition,
1816
connection, command, *args,
1817
**kwargs)
1818
exitstatus = self.last_checker_status
1819
if exitstatus >= 0:
776
1820
# Emit D-Bus signal
777
1821
self.CheckerCompleted(dbus.Int16(exitstatus),
778
dbus.Int64(condition),
1822
# This is specific to GNU libC
1823
dbus.Int64(exitstatus << 8),
779
1824
dbus.String(command))
780
1825
else:
781
1826
# Emit D-Bus signal
782
1827
self.CheckerCompleted(dbus.Int16(-1),
783
dbus.Int64(condition),
1828
dbus.Int64(
1829
# This is specific to GNU libC
1830
(exitstatus << 8)
1831
| self.last_checker_signal),
784
1832
dbus.String(command))
785
786
return Client.checker_callback(self, pid, condition, command,
787
*args, **kwargs)
788
789
def checked_ok(self, *args, **kwargs):
790
r = Client.checked_ok(self, *args, **kwargs)
791
# Emit D-Bus signal
792
self.PropertyChanged(
793
dbus.String(u"last_checked_ok"),
794
(self._datetime_to_dbus(self.last_checked_ok,
795
variant_level=1)))
796
return r
1833
return ret
797
1834
798
1835
def start_checker(self, *args, **kwargs):
799
old_checker = self.checker
800
if self.checker is not None:
801
old_checker_pid = self.checker.pid
802
else:
803
old_checker_pid = None
1836
old_checker_pid = getattr(self.checker, "pid", None)
804
1837
r = Client.start_checker(self, *args, **kwargs)
805
1838
# Only if new checker process was started
806
1839
if (self.checker is not None
807
1840
and old_checker_pid != self.checker.pid):
808
1841
# Emit D-Bus signal
809
1842
self.CheckerStarted(self.current_checker_command)
810
self.PropertyChanged(
811
dbus.String(u"checker_running"),
812
dbus.Boolean(True, variant_level=1))
813
1843
return r
814
1844
815
def stop_checker(self, *args, **kwargs):
816
old_checker = getattr(self, u"checker", None)
817
r = Client.stop_checker(self, *args, **kwargs)
818
if (old_checker is not None
819
and getattr(self, u"checker", None) is None):
820
self.PropertyChanged(dbus.String(u"checker_running"),
821
dbus.Boolean(False, variant_level=1))
822
return r
823
824
1845
def _reset_approved(self):
825
self._approved = None
1846
self.approved = None
826
1847
return False
827
1848
828
1849
def approve(self, value=True):
1850
self.approved = value
1851
GLib.timeout_add(int(self.approval_duration.total_seconds()
1852
* 1000), self._reset_approved)
829
1853
self.send_changedstate()
830
self._approved = value
831
gobject.timeout_add(self._timedelta_to_milliseconds(self.approved_duration),
832
self._reset_approved)
833
834
1854
835
1855
## D-Bus methods, signals & properties
836
_interface = u"se.bsnet.fukt.Mandos.Client"
1856
1857
## Interfaces
837
1858
838
1859
## Signals
839
1860
840
1861
# CheckerCompleted - signal
841
@dbus.service.signal(_interface, signature=u"nxs")
1862
@dbus.service.signal(_interface, signature="nxs")
842
1863
def CheckerCompleted(self, exitcode, waitstatus, command):
843
1864
"D-Bus signal"
844
1865
pass
845
1866
846
1867
# CheckerStarted - signal
847
@dbus.service.signal(_interface, signature=u"s")
1868
@dbus.service.signal(_interface, signature="s")
848
1869
def CheckerStarted(self, command):
849
1870
"D-Bus signal"
850
1871
pass
851
1872
852
1873
# PropertyChanged - signal
853
@dbus.service.signal(_interface, signature=u"sv")
1874
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1875
@dbus.service.signal(_interface, signature="sv")
854
1876
def PropertyChanged(self, property, value):
855
1877
"D-Bus signal"
856
1878
pass
865
1887
pass
866
1888
867
1889
# Rejected - signal
868
@dbus.service.signal(_interface, signature=u"s")
1890
@dbus.service.signal(_interface, signature="s")
869
1891
def Rejected(self, reason):
870
1892
"D-Bus signal"
871
1893
pass
872
1894
873
1895
# NeedApproval - signal
874
@dbus.service.signal(_interface, signature=u"db")
1896
@dbus.service.signal(_interface, signature="tb")
875
1897
def NeedApproval(self, timeout, default):
876
1898
"D-Bus signal"
877
pass
1899
return self.need_approval()
878
1900
879
1901
## Methods
880
1902
881
1903
# Approve - method
882
@dbus.service.method(_interface, in_signature=u"b")
1904
@dbus.service.method(_interface, in_signature="b")
883
1905
def Approve(self, value):
884
1906
self.approve(value)
885
1907
886
1908
# CheckedOK - method
887
1909
@dbus.service.method(_interface)
888
1910
def CheckedOK(self):
889
return self.checked_ok()
1911
self.checked_ok()
890
1912
891
1913
# Enable - method
1914
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
892
1915
@dbus.service.method(_interface)
893
1916
def Enable(self):
894
1917
"D-Bus method"
895
1918
self.enable()
896
1919
897
1920
# StartChecker - method
1921
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
898
1922
@dbus.service.method(_interface)
899
1923
def StartChecker(self):
900
1924
"D-Bus method"
901
1925
self.start_checker()
902
1926
903
1927
# Disable - method
1928
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
904
1929
@dbus.service.method(_interface)
905
1930
def Disable(self):
906
1931
"D-Bus method"
907
1932
self.disable()
908
1933
909
1934
# StopChecker - method
1935
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
910
1936
@dbus.service.method(_interface)
911
1937
def StopChecker(self):
912
1938
self.stop_checker()
913
1939
914
1940
## Properties
915
1941
916
# approved_pending - property
917
@dbus_service_property(_interface, signature=u"b", access=u"read")
918
def approved_pending_dbus_property(self):
1942
# ApprovalPending - property
1943
@dbus_service_property(_interface, signature="b", access="read")
1944
def ApprovalPending_dbus_property(self):
919
1945
return dbus.Boolean(bool(self.approvals_pending))
920
1946
921
# approved_by_default - property
922
@dbus_service_property(_interface, signature=u"b",
923
access=u"readwrite")
924
def approved_by_default_dbus_property(self):
925
return dbus.Boolean(self.approved_by_default)
926
927
# approved_delay - property
928
@dbus_service_property(_interface, signature=u"t",
929
access=u"readwrite")
930
def approved_delay_dbus_property(self):
931
return dbus.UInt64(self.approved_delay_milliseconds())
932
933
# approved_duration - property
934
@dbus_service_property(_interface, signature=u"t",
935
access=u"readwrite")
936
def approved_duration_dbus_property(self):
937
return dbus.UInt64(self._timedelta_to_milliseconds(
938
self.approved_duration))
939
940
# name - property
941
@dbus_service_property(_interface, signature=u"s", access=u"read")
942
def name_dbus_property(self):
1947
# ApprovedByDefault - property
1948
@dbus_service_property(_interface,
1949
signature="b",
1950
access="readwrite")
1951
def ApprovedByDefault_dbus_property(self, value=None):
1952
if value is None: # get
1953
return dbus.Boolean(self.approved_by_default)
1954
self.approved_by_default = bool(value)
1955
1956
# ApprovalDelay - property
1957
@dbus_service_property(_interface,
1958
signature="t",
1959
access="readwrite")
1960
def ApprovalDelay_dbus_property(self, value=None):
1961
if value is None: # get
1962
return dbus.UInt64(self.approval_delay.total_seconds()
1963
* 1000)
1964
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1965
1966
# ApprovalDuration - property
1967
@dbus_service_property(_interface,
1968
signature="t",
1969
access="readwrite")
1970
def ApprovalDuration_dbus_property(self, value=None):
1971
if value is None: # get
1972
return dbus.UInt64(self.approval_duration.total_seconds()
1973
* 1000)
1974
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1975
1976
# Name - property
1977
@dbus_annotations(
1978
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1979
@dbus_service_property(_interface, signature="s", access="read")
1980
def Name_dbus_property(self):
943
1981
return dbus.String(self.name)
944
1982
945
# fingerprint - property
946
@dbus_service_property(_interface, signature=u"s", access=u"read")
947
def fingerprint_dbus_property(self):
1983
# Fingerprint - property
1984
@dbus_annotations(
1985
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1986
@dbus_service_property(_interface, signature="s", access="read")
1987
def Fingerprint_dbus_property(self):
948
1988
return dbus.String(self.fingerprint)
949
1989
950
# host - property
951
@dbus_service_property(_interface, signature=u"s",
952
access=u"readwrite")
953
def host_dbus_property(self, value=None):
1990
# Host - property
1991
@dbus_service_property(_interface,
1992
signature="s",
1993
access="readwrite")
1994
def Host_dbus_property(self, value=None):
954
1995
if value is None: # get
955
1996
return dbus.String(self.host)
956
self.host = value
957
# Emit D-Bus signal
958
self.PropertyChanged(dbus.String(u"host"),
959
dbus.String(value, variant_level=1))
960
961
# created - property
962
@dbus_service_property(_interface, signature=u"s", access=u"read")
963
def created_dbus_property(self):
964
return dbus.String(self._datetime_to_dbus(self.created))
965
966
# last_enabled - property
967
@dbus_service_property(_interface, signature=u"s", access=u"read")
968
def last_enabled_dbus_property(self):
969
if self.last_enabled is None:
970
return dbus.String(u"")
971
return dbus.String(self._datetime_to_dbus(self.last_enabled))
972
973
# enabled - property
974
@dbus_service_property(_interface, signature=u"b",
975
access=u"readwrite")
976
def enabled_dbus_property(self, value=None):
1997
self.host = str(value)
1998
1999
# Created - property
2000
@dbus_annotations(
2001
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2002
@dbus_service_property(_interface, signature="s", access="read")
2003
def Created_dbus_property(self):
2004
return datetime_to_dbus(self.created)
2005
2006
# LastEnabled - property
2007
@dbus_service_property(_interface, signature="s", access="read")
2008
def LastEnabled_dbus_property(self):
2009
return datetime_to_dbus(self.last_enabled)
2010
2011
# Enabled - property
2012
@dbus_service_property(_interface,
2013
signature="b",
2014
access="readwrite")
2015
def Enabled_dbus_property(self, value=None):
977
2016
if value is None: # get
978
2017
return dbus.Boolean(self.enabled)
979
2018
if value:
981
2020
else:
982
2021
self.disable()
983
2022
984
# last_checked_ok - property
985
@dbus_service_property(_interface, signature=u"s",
986
access=u"readwrite")
987
def last_checked_ok_dbus_property(self, value=None):
2023
# LastCheckedOK - property
2024
@dbus_service_property(_interface,
2025
signature="s",
2026
access="readwrite")
2027
def LastCheckedOK_dbus_property(self, value=None):
988
2028
if value is not None:
989
2029
self.checked_ok()
990
2030
return
991
if self.last_checked_ok is None:
992
return dbus.String(u"")
993
return dbus.String(self._datetime_to_dbus(self
994
.last_checked_ok))
995
996
# timeout - property
997
@dbus_service_property(_interface, signature=u"t",
998
access=u"readwrite")
999
def timeout_dbus_property(self, value=None):
2031
return datetime_to_dbus(self.last_checked_ok)
2032
2033
# LastCheckerStatus - property
2034
@dbus_service_property(_interface, signature="n", access="read")
2035
def LastCheckerStatus_dbus_property(self):
2036
return dbus.Int16(self.last_checker_status)
2037
2038
# Expires - property
2039
@dbus_service_property(_interface, signature="s", access="read")
2040
def Expires_dbus_property(self):
2041
return datetime_to_dbus(self.expires)
2042
2043
# LastApprovalRequest - property
2044
@dbus_service_property(_interface, signature="s", access="read")
2045
def LastApprovalRequest_dbus_property(self):
2046
return datetime_to_dbus(self.last_approval_request)
2047
2048
# Timeout - property
2049
@dbus_service_property(_interface,
2050
signature="t",
2051
access="readwrite")
2052
def Timeout_dbus_property(self, value=None):
1000
2053
if value is None: # get
1001
return dbus.UInt64(self.timeout_milliseconds())
2054
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2055
old_timeout = self.timeout
1002
2056
self.timeout = datetime.timedelta(0, 0, 0, value)
1003
# Emit D-Bus signal
1004
self.PropertyChanged(dbus.String(u"timeout"),
1005
dbus.UInt64(value, variant_level=1))
1006
if getattr(self, u"disable_initiator_tag", None) is None:
1007
return
1008
# Reschedule timeout
1009
gobject.source_remove(self.disable_initiator_tag)
1010
self.disable_initiator_tag = None
1011
time_to_die = (self.
1012
_timedelta_to_milliseconds((self
1013
.last_checked_ok
1014
+ self.timeout)
1015
- datetime.datetime
1016
.utcnow()))
1017
if time_to_die <= 0:
1018
# The timeout has passed
1019
self.disable()
1020
else:
1021
self.disable_initiator_tag = (gobject.timeout_add
1022
(time_to_die, self.disable))
1023
1024
# interval - property
1025
@dbus_service_property(_interface, signature=u"t",
1026
access=u"readwrite")
1027
def interval_dbus_property(self, value=None):
1028
if value is None: # get
1029
return dbus.UInt64(self.interval_milliseconds())
2057
# Reschedule disabling
2058
if self.enabled:
2059
now = datetime.datetime.utcnow()
2060
self.expires += self.timeout - old_timeout
2061
if self.expires <= now:
2062
# The timeout has passed
2063
self.disable()
2064
else:
2065
if (getattr(self, "disable_initiator_tag", None)
2066
is None):
2067
return
2068
GLib.source_remove(self.disable_initiator_tag)
2069
self.disable_initiator_tag = GLib.timeout_add(
2070
int((self.expires - now).total_seconds() * 1000),
2071
self.disable)
2072
2073
# ExtendedTimeout - property
2074
@dbus_service_property(_interface,
2075
signature="t",
2076
access="readwrite")
2077
def ExtendedTimeout_dbus_property(self, value=None):
2078
if value is None: # get
2079
return dbus.UInt64(self.extended_timeout.total_seconds()
2080
* 1000)
2081
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2082
2083
# Interval - property
2084
@dbus_service_property(_interface,
2085
signature="t",
2086
access="readwrite")
2087
def Interval_dbus_property(self, value=None):
2088
if value is None: # get
2089
return dbus.UInt64(self.interval.total_seconds() * 1000)
1030
2090
self.interval = datetime.timedelta(0, 0, 0, value)
1031
# Emit D-Bus signal
1032
self.PropertyChanged(dbus.String(u"interval"),
1033
dbus.UInt64(value, variant_level=1))
1034
if getattr(self, u"checker_initiator_tag", None) is None:
2091
if getattr(self, "checker_initiator_tag", None) is None:
1035
2092
return
1036
# Reschedule checker run
1037
gobject.source_remove(self.checker_initiator_tag)
1038
self.checker_initiator_tag = (gobject.timeout_add
1039
(value, self.start_checker))
1040
self.start_checker() # Start one now, too
1041
1042
# checker - property
1043
@dbus_service_property(_interface, signature=u"s",
1044
access=u"readwrite")
1045
def checker_dbus_property(self, value=None):
2093
if self.enabled:
2094
# Reschedule checker run
2095
GLib.source_remove(self.checker_initiator_tag)
2096
self.checker_initiator_tag = GLib.timeout_add(
2097
value, self.start_checker)
2098
self.start_checker() # Start one now, too
2099
2100
# Checker - property
2101
@dbus_service_property(_interface,
2102
signature="s",
2103
access="readwrite")
2104
def Checker_dbus_property(self, value=None):
1046
2105
if value is None: # get
1047
2106
return dbus.String(self.checker_command)
1048
self.checker_command = value
1049
# Emit D-Bus signal
1050
self.PropertyChanged(dbus.String(u"checker"),
1051
dbus.String(self.checker_command,
1052
variant_level=1))
2107
self.checker_command = str(value)
1053
2108
1054
# checker_running - property
1055
@dbus_service_property(_interface, signature=u"b",
1056
access=u"readwrite")
1057
def checker_running_dbus_property(self, value=None):
2109
# CheckerRunning - property
2110
@dbus_service_property(_interface,
2111
signature="b",
2112
access="readwrite")
2113
def CheckerRunning_dbus_property(self, value=None):
1058
2114
if value is None: # get
1059
2115
return dbus.Boolean(self.checker is not None)
1060
2116
if value:
1062
2118
else:
1063
2119
self.stop_checker()
1064
2120
1065
# object_path - property
1066
@dbus_service_property(_interface, signature=u"o", access=u"read")
1067
def object_path_dbus_property(self):
2121
# ObjectPath - property
2122
@dbus_annotations(
2123
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2124
"org.freedesktop.DBus.Deprecated": "true"})
2125
@dbus_service_property(_interface, signature="o", access="read")
2126
def ObjectPath_dbus_property(self):
1068
2127
return self.dbus_object_path # is already a dbus.ObjectPath
1069
2128
1070
# secret = property
1071
@dbus_service_property(_interface, signature=u"ay",
1072
access=u"write", byte_arrays=True)
1073
def secret_dbus_property(self, value):
1074
self.secret = str(value)
2129
# Secret = property
2130
@dbus_annotations(
2131
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2132
"invalidates"})
2133
@dbus_service_property(_interface,
2134
signature="ay",
2135
access="write",
2136
byte_arrays=True)
2137
def Secret_dbus_property(self, value):
2138
self.secret = bytes(value)
1075
2139
1076
2140
del _interface
1077
2141
1081
2145
self._pipe = child_pipe
1082
2146
self._pipe.send(('init', fpr, address))
1083
2147
if not self._pipe.recv():
1084
raise KeyError()
1085
2148
raise KeyError(fpr)
2149
1086
2150
def __getattribute__(self, name):
1087
if(name == '_pipe'):
2151
if name == '_pipe':
1088
2152
return super(ProxyClient, self).__getattribute__(name)
1089
2153
self._pipe.send(('getattr', name))
1090
2154
data = self._pipe.recv()
1091
2155
if data[0] == 'data':
1092
2156
return data[1]
1093
2157
if data[0] == 'function':
2158
1094
2159
def func(*args, **kwargs):
1095
2160
self._pipe.send(('funcall', name, args, kwargs))
1096
2161
return self._pipe.recv()[1]
2162
1097
2163
return func
1098
2164
1099
2165
def __setattr__(self, name, value):
1100
if(name == '_pipe'):
2166
if name == '_pipe':
1101
2167
return super(ProxyClient, self).__setattr__(name, value)
1102
2168
self._pipe.send(('setattr', name, value))
1103
2169
1110
2176
1111
2177
def handle(self):
1112
2178
with contextlib.closing(self.server.child_pipe) as child_pipe:
1113
logger.info(u"TCP connection from: %s",
1114
unicode(self.client_address))
1115
logger.debug(u"Pipe FD: %d",
2179
logger.info("TCP connection from: %s",
2180
str(self.client_address))
2181
logger.debug("Pipe FD: %d",
1116
2182
self.server.child_pipe.fileno())
1117
1118
session = (gnutls.connection
1119
.ClientSession(self.request,
1120
gnutls.connection
1121
.X509Credentials()))
1122
1123
# Note: gnutls.connection.X509Credentials is really a
1124
# generic GnuTLS certificate credentials object so long as
1125
# no X.509 keys are added to it. Therefore, we can use it
1126
# here despite using OpenPGP certificates.
1127
1128
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1129
# u"+AES-256-CBC", u"+SHA1",
1130
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1131
# u"+DHE-DSS"))
2183
2184
session = gnutls.ClientSession(self.request)
2185
2186
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
2187
# "+AES-256-CBC", "+SHA1",
2188
# "+COMP-NULL", "+CTYPE-OPENPGP",
2189
# "+DHE-DSS"))
1132
2190
# Use a fallback default, since this MUST be set.
1133
2191
priority = self.server.gnutls_priority
1134
2192
if priority is None:
1135
priority = u"NORMAL"
1136
(gnutls.library.functions
1137
.gnutls_priority_set_direct(session._c_object,
1138
priority, None))
1139
2193
priority = "NORMAL"
2194
gnutls.priority_set_direct(session._c_object,
2195
priority.encode("utf-8"),
2196
None)
2197
1140
2198
# Start communication using the Mandos protocol
1141
2199
# Get protocol number
1142
2200
line = self.request.makefile().readline()
1143
logger.debug(u"Protocol version: %r", line)
2201
logger.debug("Protocol version: %r", line)
1144
2202
try:
1145
2203
if int(line.strip().split()[0]) > 1:
1146
raise RuntimeError
1147
except (ValueError, IndexError, RuntimeError), error:
1148
logger.error(u"Unknown protocol version: %s", error)
2204
raise RuntimeError(line)
2205
except (ValueError, IndexError, RuntimeError) as error:
2206
logger.error("Unknown protocol version: %s", error)
1149
2207
return
1150
2208
1151
2209
# Start GnuTLS connection
1152
2210
try:
1153
2211
session.handshake()
1154
except gnutls.errors.GNUTLSError, error:
1155
logger.warning(u"Handshake failed: %s", error)
2212
except gnutls.Error as error:
2213
logger.warning("Handshake failed: %s", error)
1156
2214
# Do not run session.bye() here: the session is not
1157
2215
# established. Just abandon the request.
1158
2216
return
1159
logger.debug(u"Handshake succeeded")
1160
2217
logger.debug("Handshake succeeded")
2218
1161
2219
approval_required = False
1162
2220
try:
1163
2221
try:
1164
fpr = self.fingerprint(self.peer_certificate
1165
(session))
1166
except (TypeError, gnutls.errors.GNUTLSError), error:
1167
logger.warning(u"Bad certificate: %s", error)
2222
fpr = self.fingerprint(
2223
self.peer_certificate(session))
2224
except (TypeError, gnutls.Error) as error:
2225
logger.warning("Bad certificate: %s", error)
1168
2226
return
1169
logger.debug(u"Fingerprint: %s", fpr)
1170
2227
logger.debug("Fingerprint: %s", fpr)
2228
1171
2229
try:
1172
2230
client = ProxyClient(child_pipe, fpr,
1173
2231
self.client_address)
1174
2232
except KeyError:
1175
2233
return
1176
2234
1177
if client.approved_delay:
1178
delay = client.approved_delay
2235
if client.approval_delay:
2236
delay = client.approval_delay
1179
2237
client.approvals_pending += 1
1180
2238
approval_required = True
1181
2239
1182
2240
while True:
1183
2241
if not client.enabled:
1184
logger.warning(u"Client %s is disabled",
1185
client.name)
2242
logger.info("Client %s is disabled",
2243
client.name)
1186
2244
if self.server.use_dbus:
1187
2245
# Emit D-Bus signal
1188
client.Rejected("Disabled")
2246
client.Rejected("Disabled")
1189
2247
return
1190
2248
1191
if client._approved or not client.approved_delay:
2249
if client.approved or not client.approval_delay:
1192
2250
#We are approved or approval is disabled
1193
2251
break
1194
elif client._approved is None:
1195
logger.info(u"Client %s need approval",
2252
elif client.approved is None:
2253
logger.info("Client %s needs approval",
1196
2254
client.name)
1197
2255
if self.server.use_dbus:
1198
2256
# Emit D-Bus signal
1199
2257
client.NeedApproval(
1200
client.approved_delay_milliseconds(),
1201
client.approved_by_default)
2258
client.approval_delay.total_seconds()
2259
* 1000, client.approved_by_default)
1202
2260
else:
1203
logger.warning(u"Client %s was not approved",
2261
logger.warning("Client %s was not approved",
1204
2262
client.name)
1205
2263
if self.server.use_dbus:
1206
2264
# Emit D-Bus signal
1207
client.Rejected("Disapproved")
2265
client.Rejected("Denied")
1208
2266
return
1209
2267
1210
2268
#wait until timeout or approved
1211
#x = float(client._timedelta_to_milliseconds(delay))
1212
2269
time = datetime.datetime.now()
1213
2270
client.changedstate.acquire()
1214
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
2271
client.changedstate.wait(delay.total_seconds())
1215
2272
client.changedstate.release()
1216
2273
time2 = datetime.datetime.now()
1217
2274
if (time2 - time) >= delay:
1221
2278
client.name)
1222
2279
if self.server.use_dbus:
1223
2280
# Emit D-Bus signal
1224
client.Rejected("Time out")
2281
client.Rejected("Approval timed out")
1225
2282
return
1226
2283
else:
1227
2284
break
1228
2285
else:
1229
2286
delay -= time2 - time
1230
2287
1231
sent_size = 0
1232
while sent_size < len(client.secret):
1233
try:
1234
sent = session.send(client.secret[sent_size:])
1235
except (gnutls.errors.GNUTLSError), error:
1236
logger.warning("gnutls send failed")
1237
return
1238
logger.debug(u"Sent: %d, remaining: %d",
1239
sent, len(client.secret)
1240
- (sent_size + sent))
1241
sent_size += sent
1242
1243
logger.info(u"Sending secret to %s", client.name)
1244
# bump the timeout as if seen
1245
client.checked_ok()
2288
try:
2289
session.send(client.secret)
2290
except gnutls.Error as error:
2291
logger.warning("gnutls send failed",
2292
exc_info = error)
2293
return
2294
2295
logger.info("Sending secret to %s", client.name)
2296
# bump the timeout using extended_timeout
2297
client.bump_timeout(client.extended_timeout)
1246
2298
if self.server.use_dbus:
1247
2299
# Emit D-Bus signal
1248
2300
client.GotSecret()
1252
2304
client.approvals_pending -= 1
1253
2305
try:
1254
2306
session.bye()
1255
except (gnutls.errors.GNUTLSError), error:
1256
logger.warning("gnutls bye failed")
2307
except gnutls.Error as error:
2308
logger.warning("GnuTLS bye failed",
2309
exc_info=error)
1257
2310
1258
2311
@staticmethod
1259
2312
def peer_certificate(session):
1260
2313
"Return the peer's OpenPGP certificate as a bytestring"
1261
2314
# If not an OpenPGP certificate...
1262
if (gnutls.library.functions
1263
.gnutls_certificate_type_get(session._c_object)
1264
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1265
# ...do the normal thing
1266
return session.peer_certificate
2315
if (gnutls.certificate_type_get(session._c_object)
2316
!= gnutls.CRT_OPENPGP):
2317
# ...return invalid data
2318
return b""
1267
2319
list_size = ctypes.c_uint(1)
1268
cert_list = (gnutls.library.functions
1269
.gnutls_certificate_get_peers
2320
cert_list = (gnutls.certificate_get_peers
1270
2321
(session._c_object, ctypes.byref(list_size)))
1271
2322
if not bool(cert_list) and list_size.value != 0:
1272
raise gnutls.errors.GNUTLSError(u"error getting peer"
1273
u" certificate")
2323
raise gnutls.Error("error getting peer certificate")
1274
2324
if list_size.value == 0:
1275
2325
return None
1276
2326
cert = cert_list[0]
1280
2330
def fingerprint(openpgp):
1281
2331
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1282
2332
# New GnuTLS "datum" with the OpenPGP public key
1283
datum = (gnutls.library.types
1284
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1285
ctypes.POINTER
1286
(ctypes.c_ubyte)),
1287
ctypes.c_uint(len(openpgp))))
2333
datum = gnutls.datum_t(
2334
ctypes.cast(ctypes.c_char_p(openpgp),
2335
ctypes.POINTER(ctypes.c_ubyte)),
2336
ctypes.c_uint(len(openpgp)))
1288
2337
# New empty GnuTLS certificate
1289
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1290
(gnutls.library.functions
1291
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2338
crt = gnutls.openpgp_crt_t()
2339
gnutls.openpgp_crt_init(ctypes.byref(crt))
1292
2340
# Import the OpenPGP public key into the certificate
1293
(gnutls.library.functions
1294
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1295
gnutls.library.constants
1296
.GNUTLS_OPENPGP_FMT_RAW))
2341
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2342
gnutls.OPENPGP_FMT_RAW)
1297
2343
# Verify the self signature in the key
1298
2344
crtverify = ctypes.c_uint()
1299
(gnutls.library.functions
1300
.gnutls_openpgp_crt_verify_self(crt, 0,
1301
ctypes.byref(crtverify)))
2345
gnutls.openpgp_crt_verify_self(crt, 0,
2346
ctypes.byref(crtverify))
1302
2347
if crtverify.value != 0:
1303
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1304
raise (gnutls.errors.CertificateSecurityError
1305
(u"Verify failed"))
2348
gnutls.openpgp_crt_deinit(crt)
2349
raise gnutls.CertificateSecurityError("Verify failed")
1306
2350
# New buffer for the fingerprint
1307
2351
buf = ctypes.create_string_buffer(20)
1308
2352
buf_len = ctypes.c_size_t()
1309
2353
# Get the fingerprint from the certificate into the buffer
1310
(gnutls.library.functions
1311
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1312
ctypes.byref(buf_len)))
2354
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2355
ctypes.byref(buf_len))
1313
2356
# Deinit the certificate
1314
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2357
gnutls.openpgp_crt_deinit(crt)
1315
2358
# Convert the buffer to a Python bytestring
1316
2359
fpr = ctypes.string_at(buf, buf_len.value)
1317
2360
# Convert the bytestring to hexadecimal notation
1318
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
2361
hex_fpr = binascii.hexlify(fpr).upper()
1319
2362
return hex_fpr
1320
2363
1321
2364
1322
2365
class MultiprocessingMixIn(object):
1323
2366
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2367
1324
2368
def sub_process_main(self, request, address):
1325
2369
try:
1326
2370
self.finish_request(request, address)
1327
except:
2371
except Exception:
1328
2372
self.handle_error(request, address)
1329
2373
self.close_request(request)
1330
2374
1331
2375
def process_request(self, request, address):
1332
2376
"""Start a new process to process the request."""
1333
multiprocessing.Process(target = self.sub_process_main,
1334
args = (request, address)).start()
2377
proc = multiprocessing.Process(target = self.sub_process_main,
2378
args = (request, address))
2379
proc.start()
2380
return proc
2381
1335
2382
1336
2383
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1337
2384
""" adds a pipe to the MixIn """
2385
1338
2386
def process_request(self, request, client_address):
1339
2387
"""Overrides and wraps the original process_request().
1340
2388
1341
2389
This function creates a new pipe in self.pipe
1342
2390
"""
1343
2391
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1344
1345
super(MultiprocessingMixInWithPipe,
1346
self).process_request(request, client_address)
2392
2393
proc = MultiprocessingMixIn.process_request(self, request,
2394
client_address)
1347
2395
self.child_pipe.close()
1348
self.add_pipe(parent_pipe)
1349
1350
def add_pipe(self, parent_pipe):
2396
self.add_pipe(parent_pipe, proc)
2397
2398
def add_pipe(self, parent_pipe, proc):
1351
2399
"""Dummy function; override as necessary"""
1352
pass
2400
raise NotImplementedError()
2401
1353
2402
1354
2403
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1355
2404
socketserver.TCPServer, object):
1360
2409
interface: None or a network interface name (string)
1361
2410
use_ipv6: Boolean; to use IPv6 or not
1362
2411
"""
2412
1363
2413
def __init__(self, server_address, RequestHandlerClass,
1364
interface=None, use_ipv6=True):
2414
interface=None,
2415
use_ipv6=True,
2416
socketfd=None):
2417
"""If socketfd is set, use that file descriptor instead of
2418
creating a new one with socket.socket().
2419
"""
1365
2420
self.interface = interface
1366
2421
if use_ipv6:
1367
2422
self.address_family = socket.AF_INET6
2423
if socketfd is not None:
2424
# Save the file descriptor
2425
self.socketfd = socketfd
2426
# Save the original socket.socket() function
2427
self.socket_socket = socket.socket
2428
# To implement --socket, we monkey patch socket.socket.
2429
#
2430
# (When socketserver.TCPServer is a new-style class, we
2431
# could make self.socket into a property instead of monkey
2432
# patching socket.socket.)
2433
#
2434
# Create a one-time-only replacement for socket.socket()
2435
@functools.wraps(socket.socket)
2436
def socket_wrapper(*args, **kwargs):
2437
# Restore original function so subsequent calls are
2438
# not affected.
2439
socket.socket = self.socket_socket
2440
del self.socket_socket
2441
# This time only, return a new socket object from the
2442
# saved file descriptor.
2443
return socket.fromfd(self.socketfd, *args, **kwargs)
2444
# Replace socket.socket() function with wrapper
2445
socket.socket = socket_wrapper
2446
# The socketserver.TCPServer.__init__ will call
2447
# socket.socket(), which might be our replacement,
2448
# socket_wrapper(), if socketfd was set.
1368
2449
socketserver.TCPServer.__init__(self, server_address,
1369
2450
RequestHandlerClass)
2451
1370
2452
def server_bind(self):
1371
2453
"""This overrides the normal server_bind() function
1372
2454
to bind to an interface if one was specified, and also NOT to
1373
2455
bind to an address or port if they were not specified."""
2456
global SO_BINDTODEVICE
1374
2457
if self.interface is not None:
1375
2458
if SO_BINDTODEVICE is None:
1376
logger.error(u"SO_BINDTODEVICE does not exist;"
1377
u" cannot bind to interface %s",
1378
self.interface)
1379
else:
1380
try:
1381
self.socket.setsockopt(socket.SOL_SOCKET,
1382
SO_BINDTODEVICE,
1383
str(self.interface
1384
+ u'\0'))
1385
except socket.error, error:
1386
if error[0] == errno.EPERM:
1387
logger.error(u"No permission to"
1388
u" bind to interface %s",
1389
self.interface)
1390
elif error[0] == errno.ENOPROTOOPT:
1391
logger.error(u"SO_BINDTODEVICE not available;"
1392
u" cannot bind to interface %s",
1393
self.interface)
1394
else:
1395
raise
2459
# Fall back to a hard-coded value which seems to be
2460
# common enough.
2461
logger.warning("SO_BINDTODEVICE not found, trying 25")
2462
SO_BINDTODEVICE = 25
2463
try:
2464
self.socket.setsockopt(
2465
socket.SOL_SOCKET, SO_BINDTODEVICE,
2466
(self.interface + "\0").encode("utf-8"))
2467
except socket.error as error:
2468
if error.errno == errno.EPERM:
2469
logger.error("No permission to bind to"
2470
" interface %s", self.interface)
2471
elif error.errno == errno.ENOPROTOOPT:
2472
logger.error("SO_BINDTODEVICE not available;"
2473
" cannot bind to interface %s",
2474
self.interface)
2475
elif error.errno == errno.ENODEV:
2476
logger.error("Interface %s does not exist,"
2477
" cannot bind", self.interface)
2478
else:
2479
raise
1396
2480
# Only bind(2) the socket if we really need to.
1397
2481
if self.server_address[0] or self.server_address[1]:
1398
2482
if not self.server_address[0]:
1399
2483
if self.address_family == socket.AF_INET6:
1400
any_address = u"::" # in6addr_any
2484
any_address = "::" # in6addr_any
1401
2485
else:
1402
any_address = socket.INADDR_ANY
2486
any_address = "0.0.0.0" # INADDR_ANY
1403
2487
self.server_address = (any_address,
1404
2488
self.server_address[1])
1405
2489
elif not self.server_address[1]:
1406
self.server_address = (self.server_address[0],
1407
0)
2490
self.server_address = (self.server_address[0], 0)
1408
2491
# if self.interface:
1409
2492
# self.server_address = (self.server_address[0],
1410
2493
# 0, # port
1422
2505
gnutls_priority GnuTLS priority string
1423
2506
use_dbus: Boolean; to emit D-Bus signals or not
1424
2507
1425
Assumes a gobject.MainLoop event loop.
2508
Assumes a GLib.MainLoop event loop.
1426
2509
"""
2510
1427
2511
def __init__(self, server_address, RequestHandlerClass,
1428
interface=None, use_ipv6=True, clients=None,
1429
gnutls_priority=None, use_dbus=True):
2512
interface=None,
2513
use_ipv6=True,
2514
clients=None,
2515
gnutls_priority=None,
2516
use_dbus=True,
2517
socketfd=None):
1430
2518
self.enabled = False
1431
2519
self.clients = clients
1432
2520
if self.clients is None:
1433
self.clients = set()
2521
self.clients = {}
1434
2522
self.use_dbus = use_dbus
1435
2523
self.gnutls_priority = gnutls_priority
1436
2524
IPv6_TCPServer.__init__(self, server_address,
1437
2525
RequestHandlerClass,
1438
2526
interface = interface,
1439
use_ipv6 = use_ipv6)
2527
use_ipv6 = use_ipv6,
2528
socketfd = socketfd)
2529
1440
2530
def server_activate(self):
1441
2531
if self.enabled:
1442
2532
return socketserver.TCPServer.server_activate(self)
2533
1443
2534
def enable(self):
1444
2535
self.enabled = True
1445
def add_pipe(self, parent_pipe):
2536
2537
def add_pipe(self, parent_pipe, proc):
1446
2538
# Call "handle_ipc" for both data and EOF events
1447
gobject.io_add_watch(parent_pipe.fileno(),
1448
gobject.IO_IN | gobject.IO_HUP,
1449
functools.partial(self.handle_ipc,
1450
parent_pipe = parent_pipe))
1451
1452
def handle_ipc(self, source, condition, parent_pipe=None,
2539
GLib.io_add_watch(
2540
parent_pipe.fileno(),
2541
GLib.IO_IN | GLib.IO_HUP,
2542
functools.partial(self.handle_ipc,
2543
parent_pipe = parent_pipe,
2544
proc = proc))
2545
2546
def handle_ipc(self, source, condition,
2547
parent_pipe=None,
2548
proc = None,
1453
2549
client_object=None):
1454
condition_names = {
1455
gobject.IO_IN: u"IN", # There is data to read.
1456
gobject.IO_OUT: u"OUT", # Data can be written (without
1457
# blocking).
1458
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1459
gobject.IO_ERR: u"ERR", # Error condition.
1460
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1461
# broken, usually for pipes and
1462
# sockets).
1463
}
1464
conditions_string = ' | '.join(name
1465
for cond, name in
1466
condition_names.iteritems()
1467
if cond & condition)
1468
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1469
conditions_string)
1470
1471
# error or the other end of multiprocessing.Pipe has closed
1472
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2550
# error, or the other end of multiprocessing.Pipe has closed
2551
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2552
# Wait for other process to exit
2553
proc.join()
1473
2554
return False
1474
2555
1475
2556
# Read a request from the child
1476
2557
request = parent_pipe.recv()
1477
logger.debug(u"IPC request: %s", repr(request))
1478
2558
command = request[0]
1479
2559
1480
2560
if command == 'init':
1481
2561
fpr = request[1]
1482
2562
address = request[2]
1483
2563
1484
for c in self.clients:
2564
for c in self.clients.values():
1485
2565
if c.fingerprint == fpr:
1486
2566
client = c
1487
2567
break
1488
2568
else:
1489
logger.warning(u"Client not found for fingerprint: %s, ad"
1490
u"dress: %s", fpr, address)
2569
logger.info("Client not found for fingerprint: %s, ad"
2570
"dress: %s", fpr, address)
1491
2571
if self.use_dbus:
1492
2572
# Emit D-Bus signal
1493
mandos_dbus_service.ClientNotFound(fpr, address)
2573
mandos_dbus_service.ClientNotFound(fpr,
2574
address[0])
1494
2575
parent_pipe.send(False)
1495
2576
return False
1496
2577
1497
gobject.io_add_watch(parent_pipe.fileno(),
1498
gobject.IO_IN | gobject.IO_HUP,
1499
functools.partial(self.handle_ipc,
1500
parent_pipe = parent_pipe,
1501
client_object = client))
2578
GLib.io_add_watch(
2579
parent_pipe.fileno(),
2580
GLib.IO_IN | GLib.IO_HUP,
2581
functools.partial(self.handle_ipc,
2582
parent_pipe = parent_pipe,
2583
proc = proc,
2584
client_object = client))
1502
2585
parent_pipe.send(True)
1503
# remove the old hook in favor of the new above hook on same fileno
2586
# remove the old hook in favor of the new above hook on
2587
# same fileno
1504
2588
return False
1505
2589
if command == 'funcall':
1506
2590
funcname = request[1]
1507
2591
args = request[2]
1508
2592
kwargs = request[3]
1509
2593
1510
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
1511
2594
parent_pipe.send(('data', getattr(client_object,
2595
funcname)(*args,
2596
**kwargs)))
2597
1512
2598
if command == 'getattr':
1513
2599
attrname = request[1]
1514
if callable(client_object.__getattribute__(attrname)):
1515
parent_pipe.send(('function',))
2600
if isinstance(client_object.__getattribute__(attrname),
2601
collections.Callable):
2602
parent_pipe.send(('function', ))
1516
2603
else:
1517
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
2604
parent_pipe.send((
2605
'data', client_object.__getattribute__(attrname)))
1518
2606
1519
2607
if command == 'setattr':
1520
2608
attrname = request[1]
1521
2609
value = request[2]
1522
2610
setattr(client_object, attrname, value)
1523
2611
1524
2612
return True
1525
2613
1526
2614
2615
def rfc3339_duration_to_delta(duration):
2616
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2617
2618
>>> rfc3339_duration_to_delta("P7D")
2619
datetime.timedelta(7)
2620
>>> rfc3339_duration_to_delta("PT60S")
2621
datetime.timedelta(0, 60)
2622
>>> rfc3339_duration_to_delta("PT60M")
2623
datetime.timedelta(0, 3600)
2624
>>> rfc3339_duration_to_delta("PT24H")
2625
datetime.timedelta(1)
2626
>>> rfc3339_duration_to_delta("P1W")
2627
datetime.timedelta(7)
2628
>>> rfc3339_duration_to_delta("PT5M30S")
2629
datetime.timedelta(0, 330)
2630
>>> rfc3339_duration_to_delta("P1DT3M20S")
2631
datetime.timedelta(1, 200)
2632
"""
2633
2634
# Parsing an RFC 3339 duration with regular expressions is not
2635
# possible - there would have to be multiple places for the same
2636
# values, like seconds. The current code, while more esoteric, is
2637
# cleaner without depending on a parsing library. If Python had a
2638
# built-in library for parsing we would use it, but we'd like to
2639
# avoid excessive use of external libraries.
2640
2641
# New type for defining tokens, syntax, and semantics all-in-one
2642
Token = collections.namedtuple("Token", (
2643
"regexp", # To match token; if "value" is not None, must have
2644
# a "group" containing digits
2645
"value", # datetime.timedelta or None
2646
"followers")) # Tokens valid after this token
2647
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2648
# the "duration" ABNF definition in RFC 3339, Appendix A.
2649
token_end = Token(re.compile(r"$"), None, frozenset())
2650
token_second = Token(re.compile(r"(\d+)S"),
2651
datetime.timedelta(seconds=1),
2652
frozenset((token_end, )))
2653
token_minute = Token(re.compile(r"(\d+)M"),
2654
datetime.timedelta(minutes=1),
2655
frozenset((token_second, token_end)))
2656
token_hour = Token(re.compile(r"(\d+)H"),
2657
datetime.timedelta(hours=1),
2658
frozenset((token_minute, token_end)))
2659
token_time = Token(re.compile(r"T"),
2660
None,
2661
frozenset((token_hour, token_minute,
2662
token_second)))
2663
token_day = Token(re.compile(r"(\d+)D"),
2664
datetime.timedelta(days=1),
2665
frozenset((token_time, token_end)))
2666
token_month = Token(re.compile(r"(\d+)M"),
2667
datetime.timedelta(weeks=4),
2668
frozenset((token_day, token_end)))
2669
token_year = Token(re.compile(r"(\d+)Y"),
2670
datetime.timedelta(weeks=52),
2671
frozenset((token_month, token_end)))
2672
token_week = Token(re.compile(r"(\d+)W"),
2673
datetime.timedelta(weeks=1),
2674
frozenset((token_end, )))
2675
token_duration = Token(re.compile(r"P"), None,
2676
frozenset((token_year, token_month,
2677
token_day, token_time,
2678
token_week)))
2679
# Define starting values
2680
value = datetime.timedelta() # Value so far
2681
found_token = None
2682
followers = frozenset((token_duration, )) # Following valid tokens
2683
s = duration # String left to parse
2684
# Loop until end token is found
2685
while found_token is not token_end:
2686
# Search for any currently valid tokens
2687
for token in followers:
2688
match = token.regexp.match(s)
2689
if match is not None:
2690
# Token found
2691
if token.value is not None:
2692
# Value found, parse digits
2693
factor = int(match.group(1), 10)
2694
# Add to value so far
2695
value += factor * token.value
2696
# Strip token from string
2697
s = token.regexp.sub("", s, 1)
2698
# Go to found token
2699
found_token = token
2700
# Set valid next tokens
2701
followers = found_token.followers
2702
break
2703
else:
2704
# No currently valid tokens were found
2705
raise ValueError("Invalid RFC 3339 duration: {!r}"
2706
.format(duration))
2707
# End token found
2708
return value
2709
2710
1527
2711
def string_to_delta(interval):
1528
2712
"""Parse a string and return a datetime.timedelta
1529
2713
1530
>>> string_to_delta(u'7d')
2714
>>> string_to_delta('7d')
1531
2715
datetime.timedelta(7)
1532
>>> string_to_delta(u'60s')
2716
>>> string_to_delta('60s')
1533
2717
datetime.timedelta(0, 60)
1534
>>> string_to_delta(u'60m')
2718
>>> string_to_delta('60m')
1535
2719
datetime.timedelta(0, 3600)
1536
>>> string_to_delta(u'24h')
2720
>>> string_to_delta('24h')
1537
2721
datetime.timedelta(1)
1538
>>> string_to_delta(u'1w')
2722
>>> string_to_delta('1w')
1539
2723
datetime.timedelta(7)
1540
>>> string_to_delta(u'5m 30s')
2724
>>> string_to_delta('5m 30s')
1541
2725
datetime.timedelta(0, 330)
1542
2726
"""
2727
2728
try:
2729
return rfc3339_duration_to_delta(interval)
2730
except ValueError:
2731
pass
2732
1543
2733
timevalue = datetime.timedelta(0)
1544
2734
for s in interval.split():
1545
2735
try:
1546
suffix = unicode(s[-1])
2736
suffix = s[-1]
1547
2737
value = int(s[:-1])
1548
if suffix == u"d":
2738
if suffix == "d":
1549
2739
delta = datetime.timedelta(value)
1550
elif suffix == u"s":
2740
elif suffix == "s":
1551
2741
delta = datetime.timedelta(0, value)
1552
elif suffix == u"m":
2742
elif suffix == "m":
1553
2743
delta = datetime.timedelta(0, 0, 0, 0, value)
1554
elif suffix == u"h":
2744
elif suffix == "h":
1555
2745
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1556
elif suffix == u"w":
2746
elif suffix == "w":
1557
2747
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1558
2748
else:
1559
raise ValueError(u"Unknown suffix %r" % suffix)
1560
except (ValueError, IndexError), e:
1561
raise ValueError(e.message)
2749
raise ValueError("Unknown suffix {!r}".format(suffix))
2750
except IndexError as e:
2751
raise ValueError(*(e.args))
1562
2752
timevalue += delta
1563
2753
return timevalue
1564
2754
1565
2755
1566
def if_nametoindex(interface):
1567
"""Call the C function if_nametoindex(), or equivalent
1568
1569
Note: This function cannot accept a unicode string."""
1570
global if_nametoindex
1571
try:
1572
if_nametoindex = (ctypes.cdll.LoadLibrary
1573
(ctypes.util.find_library(u"c"))
1574
.if_nametoindex)
1575
except (OSError, AttributeError):
1576
logger.warning(u"Doing if_nametoindex the hard way")
1577
def if_nametoindex(interface):
1578
"Get an interface index the hard way, i.e. using fcntl()"
1579
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1580
with contextlib.closing(socket.socket()) as s:
1581
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1582
struct.pack(str(u"16s16x"),
1583
interface))
1584
interface_index = struct.unpack(str(u"I"),
1585
ifreq[16:20])[0]
1586
return interface_index
1587
return if_nametoindex(interface)
1588
1589
1590
2756
def daemon(nochdir = False, noclose = False):
1591
2757
"""See daemon(3). Standard BSD Unix function.
1592
2758
1595
2761
sys.exit()
1596
2762
os.setsid()
1597
2763
if not nochdir:
1598
os.chdir(u"/")
2764
os.chdir("/")
1599
2765
if os.fork():
1600
2766
sys.exit()
1601
2767
if not noclose:
1602
2768
# Close all standard open file descriptors
1603
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2769
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1604
2770
if not stat.S_ISCHR(os.fstat(null).st_mode):
1605
2771
raise OSError(errno.ENODEV,
1606
u"%s not a character device"
1607
% os.path.devnull)
2772
"{} not a character device"
2773
.format(os.devnull))
1608
2774
os.dup2(null, sys.stdin.fileno())
1609
2775
os.dup2(null, sys.stdout.fileno())
1610
2776
os.dup2(null, sys.stderr.fileno())
1617
2783
##################################################################
1618
2784
# Parsing of options, both command line and config file
1619
2785
1620
parser = optparse.OptionParser(version = "%%prog %s" % version)
1621
parser.add_option("-i", u"--interface", type=u"string",
1622
metavar="IF", help=u"Bind to interface IF")
1623
parser.add_option("-a", u"--address", type=u"string",
1624
help=u"Address to listen for requests on")
1625
parser.add_option("-p", u"--port", type=u"int",
1626
help=u"Port number to receive requests on")
1627
parser.add_option("--check", action=u"store_true",
1628
help=u"Run self-test")
1629
parser.add_option("--debug", action=u"store_true",
1630
help=u"Debug mode; run in foreground and log to"
1631
u" terminal")
1632
parser.add_option("--debuglevel", type=u"string", metavar="Level",
1633
help=u"Debug level for stdout output")
1634
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1635
u" priority string (see GnuTLS documentation)")
1636
parser.add_option("--servicename", type=u"string",
1637
metavar=u"NAME", help=u"Zeroconf service name")
1638
parser.add_option("--configdir", type=u"string",
1639
default=u"/etc/mandos", metavar=u"DIR",
1640
help=u"Directory to search for configuration"
1641
u" files")
1642
parser.add_option("--no-dbus", action=u"store_false",
1643
dest=u"use_dbus", help=u"Do not provide D-Bus"
1644
u" system bus interface")
1645
parser.add_option("--no-ipv6", action=u"store_false",
1646
dest=u"use_ipv6", help=u"Do not use IPv6")
1647
options = parser.parse_args()[0]
2786
parser = argparse.ArgumentParser()
2787
parser.add_argument("-v", "--version", action="version",
2788
version = "%(prog)s {}".format(version),
2789
help="show version number and exit")
2790
parser.add_argument("-i", "--interface", metavar="IF",
2791
help="Bind to interface IF")
2792
parser.add_argument("-a", "--address",
2793
help="Address to listen for requests on")
2794
parser.add_argument("-p", "--port", type=int,
2795
help="Port number to receive requests on")
2796
parser.add_argument("--check", action="store_true",
2797
help="Run self-test")
2798
parser.add_argument("--debug", action="store_true",
2799
help="Debug mode; run in foreground and log"
2800
" to terminal", default=None)
2801
parser.add_argument("--debuglevel", metavar="LEVEL",
2802
help="Debug level for stdout output")
2803
parser.add_argument("--priority", help="GnuTLS"
2804
" priority string (see GnuTLS documentation)")
2805
parser.add_argument("--servicename",
2806
metavar="NAME", help="Zeroconf service name")
2807
parser.add_argument("--configdir",
2808
default="/etc/mandos", metavar="DIR",
2809
help="Directory to search for configuration"
2810
" files")
2811
parser.add_argument("--no-dbus", action="store_false",
2812
dest="use_dbus", help="Do not provide D-Bus"
2813
" system bus interface", default=None)
2814
parser.add_argument("--no-ipv6", action="store_false",
2815
dest="use_ipv6", help="Do not use IPv6",
2816
default=None)
2817
parser.add_argument("--no-restore", action="store_false",
2818
dest="restore", help="Do not restore stored"
2819
" state", default=None)
2820
parser.add_argument("--socket", type=int,
2821
help="Specify a file descriptor to a network"
2822
" socket to use instead of creating one")
2823
parser.add_argument("--statedir", metavar="DIR",
2824
help="Directory to save/restore state in")
2825
parser.add_argument("--foreground", action="store_true",
2826
help="Run in foreground", default=None)
2827
parser.add_argument("--no-zeroconf", action="store_false",
2828
dest="zeroconf", help="Do not use Zeroconf",
2829
default=None)
2830
2831
options = parser.parse_args()
1648
2832
1649
2833
if options.check:
1650
2834
import doctest
1651
doctest.testmod()
1652
sys.exit()
2835
fail_count, test_count = doctest.testmod()
2836
sys.exit(os.EX_OK if fail_count == 0 else 1)
1653
2837
1654
2838
# Default values for config file for server-global settings
1655
server_defaults = { u"interface": u"",
1656
u"address": u"",
1657
u"port": u"",
1658
u"debug": u"False",
1659
u"priority":
1660
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1661
u"servicename": u"Mandos",
1662
u"use_dbus": u"True",
1663
u"use_ipv6": u"True",
1664
u"debuglevel": u"",
1665
}
2839
server_defaults = { "interface": "",
2840
"address": "",
2841
"port": "",
2842
"debug": "False",
2843
"priority":
2844
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2845
":+SIGN-DSA-SHA256",
2846
"servicename": "Mandos",
2847
"use_dbus": "True",
2848
"use_ipv6": "True",
2849
"debuglevel": "",
2850
"restore": "True",
2851
"socket": "",
2852
"statedir": "/var/lib/mandos",
2853
"foreground": "False",
2854
"zeroconf": "True",
2855
}
1666
2856
1667
2857
# Parse config file for server-global settings
1668
2858
server_config = configparser.SafeConfigParser(server_defaults)
1669
2859
del server_defaults
1670
server_config.read(os.path.join(options.configdir,
1671
u"mandos.conf"))
2860
server_config.read(os.path.join(options.configdir, "mandos.conf"))
1672
2861
# Convert the SafeConfigParser object to a dict
1673
2862
server_settings = server_config.defaults()
1674
2863
# Use the appropriate methods on the non-string config options
1675
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1676
server_settings[option] = server_config.getboolean(u"DEFAULT",
2864
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
2865
server_settings[option] = server_config.getboolean("DEFAULT",
1677
2866
option)
1678
2867
if server_settings["port"]:
1679
server_settings["port"] = server_config.getint(u"DEFAULT",
1680
u"port")
2868
server_settings["port"] = server_config.getint("DEFAULT",
2869
"port")
2870
if server_settings["socket"]:
2871
server_settings["socket"] = server_config.getint("DEFAULT",
2872
"socket")
2873
# Later, stdin will, and stdout and stderr might, be dup'ed
2874
# over with an opened os.devnull. But we don't want this to
2875
# happen with a supplied network socket.
2876
if 0 <= server_settings["socket"] <= 2:
2877
server_settings["socket"] = os.dup(server_settings
2878
["socket"])
1681
2879
del server_config
1682
2880
1683
2881
# Override the settings from the config file with command line
1684
2882
# options, if set.
1685
for option in (u"interface", u"address", u"port", u"debug",
1686
u"priority", u"servicename", u"configdir",
1687
u"use_dbus", u"use_ipv6", u"debuglevel"):
2883
for option in ("interface", "address", "port", "debug",
2884
"priority", "servicename", "configdir", "use_dbus",
2885
"use_ipv6", "debuglevel", "restore", "statedir",
2886
"socket", "foreground", "zeroconf"):
1688
2887
value = getattr(options, option)
1689
2888
if value is not None:
1690
2889
server_settings[option] = value
1691
2890
del options
1692
2891
# Force all strings to be unicode
1693
2892
for option in server_settings.keys():
1694
if type(server_settings[option]) is str:
1695
server_settings[option] = unicode(server_settings[option])
2893
if isinstance(server_settings[option], bytes):
2894
server_settings[option] = (server_settings[option]
2895
.decode("utf-8"))
2896
# Force all boolean options to be boolean
2897
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2898
"foreground", "zeroconf"):
2899
server_settings[option] = bool(server_settings[option])
2900
# Debug implies foreground
2901
if server_settings["debug"]:
2902
server_settings["foreground"] = True
1696
2903
# Now we have our good server settings in "server_settings"
1697
2904
1698
2905
##################################################################
1699
2906
2907
if (not server_settings["zeroconf"]
2908
and not (server_settings["port"]
2909
or server_settings["socket"] != "")):
2910
parser.error("Needs port or socket to work without Zeroconf")
2911
1700
2912
# For convenience
1701
debug = server_settings[u"debug"]
1702
debuglevel = server_settings[u"debuglevel"]
1703
use_dbus = server_settings[u"use_dbus"]
1704
use_ipv6 = server_settings[u"use_ipv6"]
1705
1706
if server_settings[u"servicename"] != u"Mandos":
1707
syslogger.setFormatter(logging.Formatter
1708
(u'Mandos (%s) [%%(process)d]:'
1709
u' %%(levelname)s: %%(message)s'
1710
% server_settings[u"servicename"]))
2913
debug = server_settings["debug"]
2914
debuglevel = server_settings["debuglevel"]
2915
use_dbus = server_settings["use_dbus"]
2916
use_ipv6 = server_settings["use_ipv6"]
2917
stored_state_path = os.path.join(server_settings["statedir"],
2918
stored_state_file)
2919
foreground = server_settings["foreground"]
2920
zeroconf = server_settings["zeroconf"]
2921
2922
if debug:
2923
initlogger(debug, logging.DEBUG)
2924
else:
2925
if not debuglevel:
2926
initlogger(debug)
2927
else:
2928
level = getattr(logging, debuglevel.upper())
2929
initlogger(debug, level)
2930
2931
if server_settings["servicename"] != "Mandos":
2932
syslogger.setFormatter(
2933
logging.Formatter('Mandos ({}) [%(process)d]:'
2934
' %(levelname)s: %(message)s'.format(
2935
server_settings["servicename"])))
1711
2936
1712
2937
# Parse config file with clients
1713
client_defaults = { u"timeout": u"1h",
1714
u"interval": u"5m",
1715
u"checker": u"fping -q -- %%(host)s",
1716
u"host": u"",
1717
u"approved_delay": u"0s",
1718
u"approved_duration": u"1s",
1719
}
1720
client_config = configparser.SafeConfigParser(client_defaults)
1721
client_config.read(os.path.join(server_settings[u"configdir"],
1722
u"clients.conf"))
2938
client_config = configparser.SafeConfigParser(Client
2939
.client_defaults)
2940
client_config.read(os.path.join(server_settings["configdir"],
2941
"clients.conf"))
1723
2942
1724
2943
global mandos_dbus_service
1725
2944
mandos_dbus_service = None
1726
2945
1727
tcp_server = MandosServer((server_settings[u"address"],
1728
server_settings[u"port"]),
1729
ClientHandler,
1730
interface=server_settings[u"interface"],
1731
use_ipv6=use_ipv6,
1732
gnutls_priority=
1733
server_settings[u"priority"],
1734
use_dbus=use_dbus)
1735
pidfilename = u"/var/run/mandos.pid"
1736
try:
1737
pidfile = open(pidfilename, u"w")
1738
except IOError:
1739
logger.error(u"Could not open file %r", pidfilename)
2946
socketfd = None
2947
if server_settings["socket"] != "":
2948
socketfd = server_settings["socket"]
2949
tcp_server = MandosServer(
2950
(server_settings["address"], server_settings["port"]),
2951
ClientHandler,
2952
interface=(server_settings["interface"] or None),
2953
use_ipv6=use_ipv6,
2954
gnutls_priority=server_settings["priority"],
2955
use_dbus=use_dbus,
2956
socketfd=socketfd)
2957
if not foreground:
2958
pidfilename = "/run/mandos.pid"
2959
if not os.path.isdir("/run/."):
2960
pidfilename = "/var/run/mandos.pid"
2961
pidfile = None
2962
try:
2963
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2964
except IOError as e:
2965
logger.error("Could not open file %r", pidfilename,
2966
exc_info=e)
1740
2967
1741
try:
1742
uid = pwd.getpwnam(u"_mandos").pw_uid
1743
gid = pwd.getpwnam(u"_mandos").pw_gid
1744
except KeyError:
2968
for name, group in (("_mandos", "_mandos"),
2969
("mandos", "mandos"),
2970
("nobody", "nogroup")):
1745
2971
try:
1746
uid = pwd.getpwnam(u"mandos").pw_uid
1747
gid = pwd.getpwnam(u"mandos").pw_gid
2972
uid = pwd.getpwnam(name).pw_uid
2973
gid = pwd.getpwnam(group).pw_gid
2974
break
1748
2975
except KeyError:
1749
try:
1750
uid = pwd.getpwnam(u"nobody").pw_uid
1751
gid = pwd.getpwnam(u"nobody").pw_gid
1752
except KeyError:
1753
uid = 65534
1754
gid = 65534
2976
continue
2977
else:
2978
uid = 65534
2979
gid = 65534
1755
2980
try:
1756
2981
os.setgid(gid)
1757
2982
os.setuid(uid)
1758
except OSError, error:
1759
if error[0] != errno.EPERM:
1760
raise error
2983
if debug:
2984
logger.debug("Did setuid/setgid to {}:{}".format(uid,
2985
gid))
2986
except OSError as error:
2987
logger.warning("Failed to setuid/setgid to {}:{}: {}"
2988
.format(uid, gid, os.strerror(error.errno)))
2989
if error.errno != errno.EPERM:
2990
raise
1761
2991
1762
# Enable all possible GnuTLS debugging
1763
1764
1765
if not debug and not debuglevel:
1766
syslogger.setLevel(logging.WARNING)
1767
console.setLevel(logging.WARNING)
1768
if debuglevel:
1769
level = getattr(logging, debuglevel.upper())
1770
syslogger.setLevel(level)
1771
console.setLevel(level)
1772
1773
2992
if debug:
2993
# Enable all possible GnuTLS debugging
2994
1774
2995
# "Use a log level over 10 to enable all debugging options."
1775
2996
# - GnuTLS manual
1776
gnutls.library.functions.gnutls_global_set_log_level(11)
2997
gnutls.global_set_log_level(11)
1777
2998
1778
@gnutls.library.types.gnutls_log_func
2999
@gnutls.log_func
1779
3000
def debug_gnutls(level, string):
1780
logger.debug(u"GnuTLS: %s", string[:-1])
1781
1782
(gnutls.library.functions
1783
.gnutls_global_set_log_function(debug_gnutls))
1784
3001
logger.debug("GnuTLS: %s", string[:-1])
3002
3003
gnutls.global_set_log_function(debug_gnutls)
3004
1785
3005
# Redirect stdin so all checkers get /dev/null
1786
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3006
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1787
3007
os.dup2(null, sys.stdin.fileno())
1788
3008
if null > 2:
1789
3009
os.close(null)
1790
else:
1791
# No console logging
1792
logger.removeHandler(console)
1793
3010
3011
# Need to fork before connecting to D-Bus
3012
if not foreground:
3013
# Close all input and output, do double fork, etc.
3014
daemon()
3015
3016
# multiprocessing will use threads, so before we use GLib we need
3017
# to inform GLib that threads will be used.
3018
GLib.threads_init()
1794
3019
1795
3020
global main_loop
1796
3021
# From the Avahi example code
1797
DBusGMainLoop(set_as_default=True )
1798
main_loop = gobject.MainLoop()
3022
DBusGMainLoop(set_as_default=True)
3023
main_loop = GLib.MainLoop()
1799
3024
bus = dbus.SystemBus()
1800
3025
# End of Avahi example code
1801
3026
if use_dbus:
1802
3027
try:
1803
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
1804
bus, do_not_queue=True)
1805
except dbus.exceptions.NameExistsException, e:
1806
logger.error(unicode(e) + u", disabling D-Bus")
3028
bus_name = dbus.service.BusName("se.recompile.Mandos",
3029
bus,
3030
do_not_queue=True)
3031
old_bus_name = dbus.service.BusName(
3032
"se.bsnet.fukt.Mandos", bus,
3033
do_not_queue=True)
3034
except dbus.exceptions.DBusException as e:
3035
logger.error("Disabling D-Bus:", exc_info=e)
1807
3036
use_dbus = False
1808
server_settings[u"use_dbus"] = False
3037
server_settings["use_dbus"] = False
1809
3038
tcp_server.use_dbus = False
1810
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1811
service = AvahiService(name = server_settings[u"servicename"],
1812
servicetype = u"_mandos._tcp",
1813
protocol = protocol, bus = bus)
1814
if server_settings["interface"]:
1815
service.interface = (if_nametoindex
1816
(str(server_settings[u"interface"])))
1817
1818
if not debug:
1819
# Close all input and output, do double fork, etc.
1820
daemon()
1821
3039
if zeroconf:
3040
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3041
service = AvahiServiceToSyslog(
3042
name = server_settings["servicename"],
3043
servicetype = "_mandos._tcp",
3044
protocol = protocol,
3045
bus = bus)
3046
if server_settings["interface"]:
3047
service.interface = if_nametoindex(
3048
server_settings["interface"].encode("utf-8"))
3049
1822
3050
global multiprocessing_manager
1823
3051
multiprocessing_manager = multiprocessing.Manager()
1824
3052
1825
3053
client_class = Client
1826
3054
if use_dbus:
1827
3055
client_class = functools.partial(ClientDBus, bus = bus)
1828
def client_config_items(config, section):
1829
special_settings = {
1830
"approved_by_default":
1831
lambda: config.getboolean(section,
1832
"approved_by_default"),
1833
}
1834
for name, value in config.items(section):
3056
3057
client_settings = Client.config_parser(client_config)
3058
old_client_settings = {}
3059
clients_data = {}
3060
3061
# This is used to redirect stdout and stderr for checker processes
3062
global wnull
3063
wnull = open(os.devnull, "w") # A writable /dev/null
3064
# Only used if server is running in foreground but not in debug
3065
# mode
3066
if debug or not foreground:
3067
wnull.close()
3068
3069
# Get client data and settings from last running state.
3070
if server_settings["restore"]:
3071
try:
3072
with open(stored_state_path, "rb") as stored_state:
3073
if sys.version_info.major == 2:
3074
clients_data, old_client_settings = pickle.load(
3075
stored_state)
3076
else:
3077
bytes_clients_data, bytes_old_client_settings = (
3078
pickle.load(stored_state, encoding = "bytes"))
3079
### Fix bytes to strings
3080
## clients_data
3081
# .keys()
3082
clients_data = { (key.decode("utf-8")
3083
if isinstance(key, bytes)
3084
else key): value
3085
for key, value in
3086
bytes_clients_data.items() }
3087
del bytes_clients_data
3088
for key in clients_data:
3089
value = { (k.decode("utf-8")
3090
if isinstance(k, bytes) else k): v
3091
for k, v in
3092
clients_data[key].items() }
3093
clients_data[key] = value
3094
# .client_structure
3095
value["client_structure"] = [
3096
(s.decode("utf-8")
3097
if isinstance(s, bytes)
3098
else s) for s in
3099
value["client_structure"] ]
3100
# .name & .host
3101
for k in ("name", "host"):
3102
if isinstance(value[k], bytes):
3103
value[k] = value[k].decode("utf-8")
3104
## old_client_settings
3105
# .keys()
3106
old_client_settings = {
3107
(key.decode("utf-8")
3108
if isinstance(key, bytes)
3109
else key): value
3110
for key, value in
3111
bytes_old_client_settings.items() }
3112
del bytes_old_client_settings
3113
# .host
3114
for value in old_client_settings.values():
3115
if isinstance(value["host"], bytes):
3116
value["host"] = (value["host"]
3117
.decode("utf-8"))
3118
os.remove(stored_state_path)
3119
except IOError as e:
3120
if e.errno == errno.ENOENT:
3121
logger.warning("Could not load persistent state:"
3122
" {}".format(os.strerror(e.errno)))
3123
else:
3124
logger.critical("Could not load persistent state:",
3125
exc_info=e)
3126
raise
3127
except EOFError as e:
3128
logger.warning("Could not load persistent state: "
3129
"EOFError:",
3130
exc_info=e)
3131
3132
with PGPEngine() as pgp:
3133
for client_name, client in clients_data.items():
3134
# Skip removed clients
3135
if client_name not in client_settings:
3136
continue
3137
3138
# Decide which value to use after restoring saved state.
3139
# We have three different values: Old config file,
3140
# new config file, and saved state.
3141
# New config value takes precedence if it differs from old
3142
# config value, otherwise use saved state.
3143
for name, value in client_settings[client_name].items():
3144
try:
3145
# For each value in new config, check if it
3146
# differs from the old config value (Except for
3147
# the "secret" attribute)
3148
if (name != "secret"
3149
and (value !=
3150
old_client_settings[client_name][name])):
3151
client[name] = value
3152
except KeyError:
3153
pass
3154
3155
# Clients who has passed its expire date can still be
3156
# enabled if its last checker was successful. A Client
3157
# whose checker succeeded before we stored its state is
3158
# assumed to have successfully run all checkers during
3159
# downtime.
3160
if client["enabled"]:
3161
if datetime.datetime.utcnow() >= client["expires"]:
3162
if not client["last_checked_ok"]:
3163
logger.warning(
3164
"disabling client {} - Client never "
3165
"performed a successful checker".format(
3166
client_name))
3167
client["enabled"] = False
3168
elif client["last_checker_status"] != 0:
3169
logger.warning(
3170
"disabling client {} - Client last"
3171
" checker failed with error code"
3172
" {}".format(
3173
client_name,
3174
client["last_checker_status"]))
3175
client["enabled"] = False
3176
else:
3177
client["expires"] = (
3178
datetime.datetime.utcnow()
3179
+ client["timeout"])
3180
logger.debug("Last checker succeeded,"
3181
" keeping {} enabled".format(
3182
client_name))
1835
3183
try:
1836
yield (name, special_settings[name]())
1837
except KeyError:
1838
yield (name, value)
1839
1840
tcp_server.clients.update(set(
1841
client_class(name = section,
1842
config= dict(client_config_items(
1843
client_config, section)))
1844
for section in client_config.sections()))
3184
client["secret"] = pgp.decrypt(
3185
client["encrypted_secret"],
3186
client_settings[client_name]["secret"])
3187
except PGPError:
3188
# If decryption fails, we use secret from new settings
3189
logger.debug("Failed to decrypt {} old secret".format(
3190
client_name))
3191
client["secret"] = (client_settings[client_name]
3192
["secret"])
3193
3194
# Add/remove clients based on new changes made to config
3195
for client_name in (set(old_client_settings)
3196
- set(client_settings)):
3197
del clients_data[client_name]
3198
for client_name in (set(client_settings)
3199
- set(old_client_settings)):
3200
clients_data[client_name] = client_settings[client_name]
3201
3202
# Create all client objects
3203
for client_name, client in clients_data.items():
3204
tcp_server.clients[client_name] = client_class(
3205
name = client_name,
3206
settings = client,
3207
server_settings = server_settings)
3208
1845
3209
if not tcp_server.clients:
1846
logger.warning(u"No clients defined")
1847
1848
try:
1849
with pidfile:
3210
logger.warning("No clients defined")
3211
3212
if not foreground:
3213
if pidfile is not None:
1850
3214
pid = os.getpid()
1851
pidfile.write(str(pid) + "\n")
3215
try:
3216
with pidfile:
3217
print(pid, file=pidfile)
3218
except IOError:
3219
logger.error("Could not write to file %r with PID %d",
3220
pidfilename, pid)
1852
3221
del pidfile
1853
except IOError:
1854
logger.error(u"Could not write to file %r with PID %d",
1855
pidfilename, pid)
1856
except NameError:
1857
# "pidfile" was never created
1858
pass
1859
del pidfilename
3222
del pidfilename
1860
3223
1861
if not debug:
1862
signal.signal(signal.SIGINT, signal.SIG_IGN)
1863
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1864
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
3224
for termsig in (signal.SIGHUP, signal.SIGTERM):
3225
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3226
lambda: main_loop.quit() and False)
1865
3227
1866
3228
if use_dbus:
1867
class MandosDBusService(dbus.service.Object):
3229
3230
@alternate_dbus_interfaces(
3231
{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
3232
class MandosDBusService(DBusObjectWithObjectManager):
1868
3233
"""A D-Bus proxy object"""
3234
1869
3235
def __init__(self):
1870
dbus.service.Object.__init__(self, bus, u"/")
1871
_interface = u"se.bsnet.fukt.Mandos"
1872
1873
@dbus.service.signal(_interface, signature=u"o")
3236
dbus.service.Object.__init__(self, bus, "/")
3237
3238
_interface = "se.recompile.Mandos"
3239
3240
@dbus.service.signal(_interface, signature="o")
1874
3241
def ClientAdded(self, objpath):
1875
3242
"D-Bus signal"
1876
3243
pass
1877
3244
1878
@dbus.service.signal(_interface, signature=u"ss")
3245
@dbus.service.signal(_interface, signature="ss")
1879
3246
def ClientNotFound(self, fingerprint, address):
1880
3247
"D-Bus signal"
1881
3248
pass
1882
3249
1883
@dbus.service.signal(_interface, signature=u"os")
3250
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3251
"true"})
3252
@dbus.service.signal(_interface, signature="os")
1884
3253
def ClientRemoved(self, objpath, name):
1885
3254
"D-Bus signal"
1886
3255
pass
1887
3256
1888
@dbus.service.method(_interface, out_signature=u"ao")
3257
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3258
"true"})
3259
@dbus.service.method(_interface, out_signature="ao")
1889
3260
def GetAllClients(self):
1890
3261
"D-Bus method"
1891
return dbus.Array(c.dbus_object_path
1892
for c in tcp_server.clients)
3262
return dbus.Array(c.dbus_object_path for c in
3263
tcp_server.clients.values())
1893
3264
3265
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3266
"true"})
1894
3267
@dbus.service.method(_interface,
1895
out_signature=u"a{oa{sv}}")
3268
out_signature="a{oa{sv}}")
1896
3269
def GetAllClientsWithProperties(self):
1897
3270
"D-Bus method"
1898
3271
return dbus.Dictionary(
1899
((c.dbus_object_path, c.GetAll(u""))
1900
for c in tcp_server.clients),
1901
signature=u"oa{sv}")
3272
{ c.dbus_object_path: c.GetAll(
3273
"se.recompile.Mandos.Client")
3274
for c in tcp_server.clients.values() },
3275
signature="oa{sv}")
1902
3276
1903
@dbus.service.method(_interface, in_signature=u"o")
3277
@dbus.service.method(_interface, in_signature="o")
1904
3278
def RemoveClient(self, object_path):
1905
3279
"D-Bus method"
1906
for c in tcp_server.clients:
3280
for c in tcp_server.clients.values():
1907
3281
if c.dbus_object_path == object_path:
1908
tcp_server.clients.remove(c)
3282
del tcp_server.clients[c.name]
1909
3283
c.remove_from_connection()
1910
# Don't signal anything except ClientRemoved
3284
# Don't signal the disabling
1911
3285
c.disable(quiet=True)
1912
# Emit D-Bus signal
1913
self.ClientRemoved(object_path, c.name)
3286
# Emit D-Bus signal for removal
3287
self.client_removed_signal(c)
1914
3288
return
1915
3289
raise KeyError(object_path)
1916
3290
1917
3291
del _interface
3292
3293
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3294
out_signature = "a{oa{sa{sv}}}")
3295
def GetManagedObjects(self):
3296
"""D-Bus method"""
3297
return dbus.Dictionary(
3298
{ client.dbus_object_path:
3299
dbus.Dictionary(
3300
{ interface: client.GetAll(interface)
3301
for interface in
3302
client._get_all_interface_names()})
3303
for client in tcp_server.clients.values()})
3304
3305
def client_added_signal(self, client):
3306
"""Send the new standard signal and the old signal"""
3307
if use_dbus:
3308
# New standard signal
3309
self.InterfacesAdded(
3310
client.dbus_object_path,
3311
dbus.Dictionary(
3312
{ interface: client.GetAll(interface)
3313
for interface in
3314
client._get_all_interface_names()}))
3315
# Old signal
3316
self.ClientAdded(client.dbus_object_path)
3317
3318
def client_removed_signal(self, client):
3319
"""Send the new standard signal and the old signal"""
3320
if use_dbus:
3321
# New standard signal
3322
self.InterfacesRemoved(
3323
client.dbus_object_path,
3324
client._get_all_interface_names())
3325
# Old signal
3326
self.ClientRemoved(client.dbus_object_path,
3327
client.name)
1918
3328
1919
3329
mandos_dbus_service = MandosDBusService()
1920
3330
3331
# Save modules to variables to exempt the modules from being
3332
# unloaded before the function registered with atexit() is run.
3333
mp = multiprocessing
3334
wn = wnull
1921
3335
def cleanup():
1922
3336
"Cleanup function; run on exit"
1923
service.cleanup()
1924
3337
if zeroconf:
3338
service.cleanup()
3339
3340
mp.active_children()
3341
wn.close()
3342
if not (tcp_server.clients or client_settings):
3343
return
3344
3345
# Store client before exiting. Secrets are encrypted with key
3346
# based on what config file has. If config file is
3347
# removed/edited, old secret will thus be unrecovable.
3348
clients = {}
3349
with PGPEngine() as pgp:
3350
for client in tcp_server.clients.values():
3351
key = client_settings[client.name]["secret"]
3352
client.encrypted_secret = pgp.encrypt(client.secret,
3353
key)
3354
client_dict = {}
3355
3356
# A list of attributes that can not be pickled
3357
# + secret.
3358
exclude = { "bus", "changedstate", "secret",
3359
"checker", "server_settings" }
3360
for name, typ in inspect.getmembers(dbus.service
3361
.Object):
3362
exclude.add(name)
3363
3364
client_dict["encrypted_secret"] = (client
3365
.encrypted_secret)
3366
for attr in client.client_structure:
3367
if attr not in exclude:
3368
client_dict[attr] = getattr(client, attr)
3369
3370
clients[client.name] = client_dict
3371
del client_settings[client.name]["secret"]
3372
3373
try:
3374
with tempfile.NamedTemporaryFile(
3375
mode='wb',
3376
suffix=".pickle",
3377
prefix='clients-',
3378
dir=os.path.dirname(stored_state_path),
3379
delete=False) as stored_state:
3380
pickle.dump((clients, client_settings), stored_state,
3381
protocol = 2)
3382
tempname = stored_state.name
3383
os.rename(tempname, stored_state_path)
3384
except (IOError, OSError) as e:
3385
if not debug:
3386
try:
3387
os.remove(tempname)
3388
except NameError:
3389
pass
3390
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3391
logger.warning("Could not save persistent state: {}"
3392
.format(os.strerror(e.errno)))
3393
else:
3394
logger.warning("Could not save persistent state:",
3395
exc_info=e)
3396
raise
3397
3398
# Delete all clients, and settings from config
1925
3399
while tcp_server.clients:
1926
client = tcp_server.clients.pop()
3400
name, client = tcp_server.clients.popitem()
1927
3401
if use_dbus:
1928
3402
client.remove_from_connection()
1929
client.disable_hook = None
1930
# Don't signal anything except ClientRemoved
3403
# Don't signal the disabling
1931
3404
client.disable(quiet=True)
3405
# Emit D-Bus signal for removal
1932
3406
if use_dbus:
1933
# Emit D-Bus signal
1934
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
1935
client.name)
3407
mandos_dbus_service.client_removed_signal(client)
3408
client_settings.clear()
1936
3409
1937
3410
atexit.register(cleanup)
1938
3411
1939
for client in tcp_server.clients:
3412
for client in tcp_server.clients.values():
1940
3413
if use_dbus:
1941
# Emit D-Bus signal
1942
mandos_dbus_service.ClientAdded(client.dbus_object_path)
1943
client.enable()
3414
# Emit D-Bus signal for adding
3415
mandos_dbus_service.client_added_signal(client)
3416
# Need to initiate checking of clients
3417
if client.enabled:
3418
client.init_checker()
1944
3419
1945
3420
tcp_server.enable()
1946
3421
tcp_server.server_activate()
1947
3422
1948
3423
# Find out what port we got
1949
service.port = tcp_server.socket.getsockname()[1]
3424
if zeroconf:
3425
service.port = tcp_server.socket.getsockname()[1]
1950
3426
if use_ipv6:
1951
logger.info(u"Now listening on address %r, port %d,"
1952
" flowinfo %d, scope_id %d"
1953
% tcp_server.socket.getsockname())
3427
logger.info("Now listening on address %r, port %d,"
3428
" flowinfo %d, scope_id %d",
3429
*tcp_server.socket.getsockname())
1954
3430
else: # IPv4
1955
logger.info(u"Now listening on address %r, port %d"
1956
% tcp_server.socket.getsockname())
3431
logger.info("Now listening on address %r, port %d",
3432
*tcp_server.socket.getsockname())
1957
3433
1958
3434
#service.interface = tcp_server.socket.getsockname()[3]
1959
3435
1960
3436
try:
1961
# From the Avahi example code
1962
try:
1963
service.activate()
1964
except dbus.exceptions.DBusException, error:
1965
logger.critical(u"DBusException: %s", error)
1966
cleanup()
1967
sys.exit(1)
1968
# End of Avahi example code
1969
1970
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
1971
lambda *args, **kwargs:
1972
(tcp_server.handle_request
1973
(*args[2:], **kwargs) or True))
1974
1975
logger.debug(u"Starting main loop")
3437
if zeroconf:
3438
# From the Avahi example code
3439
try:
3440
service.activate()
3441
except dbus.exceptions.DBusException as error:
3442
logger.critical("D-Bus Exception", exc_info=error)
3443
cleanup()
3444
sys.exit(1)
3445
# End of Avahi example code
3446
3447
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3448
lambda *args, **kwargs:
3449
(tcp_server.handle_request
3450
(*args[2:], **kwargs) or True))
3451
3452
logger.debug("Starting main loop")
1976
3453
main_loop.run()
1977
except AvahiError, error:
1978
logger.critical(u"AvahiError: %s", error)
3454
except AvahiError as error:
3455
logger.critical("Avahi Error", exc_info=error)
1979
3456
cleanup()
1980
3457
sys.exit(1)
1981
3458
except KeyboardInterrupt:
1982
3459
if debug:
1983
print >> sys.stderr
1984
logger.debug(u"Server received KeyboardInterrupt")
1985
logger.debug(u"Server exiting")
3460
print("", file=sys.stderr)
3461
logger.debug("Server received KeyboardInterrupt")
3462
logger.debug("Server exiting")
1986
3463
# Must run before the D-Bus bus name gets deregistered
1987
3464
cleanup()
1988
3465
3466
1989
3467
if __name__ == '__main__':
1990
3468
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0